JP5736420B2 - Optical member holding structure, lighting device, display device, and television receiver - Google Patents

Description

  The present invention relates to an optical member holding structure, a lighting device, a display device, and a television receiver.

  In recent years, display elements of image display devices such as television receivers are shifting from conventional cathode ray tubes to thin display panels such as liquid crystal panels and plasma display panels, which enables thinning of image display devices. Since the liquid crystal panel used for the liquid crystal display device does not emit light by itself, a backlight device is separately required as a lighting device, and the backlight device is roughly classified into a direct type and an edge light type according to the mechanism. In order to further reduce the thickness of the liquid crystal display device, it is preferable to use an edge light type backlight device, and an example described in Patent Document 1 below is known.

JP 2009-58915 A

Patent Document 1 described above describes a liquid crystal display device in which a frame is narrowed by attaching a fixing screw for attaching a back cover to a slide mounting bracket.
By the way, when the frame of the liquid crystal display device is further narrowed, the frame allowance for the liquid crystal panel becomes very small. Therefore, when the frame is bent, the liquid crystal panel is easily dropped and the liquid crystal panel falls off. There was a fear.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to suppress dropping of an optical member.

  The optical member holding structure of the present invention has a frame shape in a shape that follows an optical member having a rectangular plate shape, a chassis having a plate-like portion along the plate surface of the optical member, and an outer peripheral end portion of the optical member. And a pair of frames that sandwich the outer peripheral end portion of the optical member between the plate-like portion of the chassis and that form opposite sides of the three side portions included in the outer peripheral end portion of the optical member. A pair of first extending portions extending along the side portions, and a pair of the side portions of the three side portions of the optical member that are connected to end portions on the same side of the pair of first extending portions. A frame main body composed of a second extending portion extending along a side portion sandwiched between the portions, and a remaining side portion excluding the three side portions of the outer peripheral end portion of the optical member. A chain that extends and is connected to the pair of first extending portions forming the frame body. A frame having an extension portion, and the pair of first extension portions and the chassis that form the frame body, and are relatively fitted so that the pair of first extension portions is opened by engaging with each other. And a regulation structure that regulates displacement.

  As described above, the outer peripheral end of the optical member is sandwiched between the plate-like portion of the chassis and the frame, and more specifically, it forms the opposite side of the three sides included in the outer peripheral end of the optical member. Between the pair of first extending portions and the plate-like portion, the pair of sides constitutes the frame body, and the side portion sandwiched between the pair of sides of the three sides constitutes the frame body. The remaining side portions excluding the three side portions of the outer peripheral end portion of the optical member are connected to the pair of first extending portions between the second extending portion and the plate-like portion. It is pinched | interposed between an extension part and a plate-shaped part, respectively. Since the frame body has a configuration in which the pair of first extending portions are connected to the second extending portion, for example, the optical member and the chassis are connected to the second extending portion side with respect to the pair of first extending portions. When assembled so as to be inserted from the opposite side, there is a concern that the pair of first extending portions may be deformed so as to open. In that respect, the pair of first extending portions and the chassis forming the frame main body are provided with a restricting structure for restricting relative displacement so that the pair of first extending portions are opened by engaging with each other. Therefore, the opening deformation of the pair of first extending portions is suppressed, whereby the optical member can be firmly sandwiched between the pair of first extending portions and the plate-like portion. Even in a state in which the connection extension portion is connected to the frame body, the opening of the pair of first extension portions is restricted by the restriction structure, so that the optical member can be suitably prevented from falling off. In particular, even when the frame is narrowed and the frame allowance for the outer peripheral end of the optical member is narrowed, the relative displacement of the pair of first extending portions is restricted by the restricting structure. The situation in which the frame is detached from the outer peripheral end of the optical member can be made difficult to occur, which is suitable for narrowing the frame. Moreover, since the regulating structure is provided in the pair of first extending portions and the chassis and is not provided in the optical member, it is possible to avoid adversely affecting the optical performance of the optical member.

As an embodiment of the optical member holding structure of the present invention, the following configuration is preferable.
(1) The restriction structure is disposed at a position overlapping the optical member. In this way, if the restricting structure is arranged in a non-overlapping manner with the optical member, it is more preferable to narrow the frame than when the frame is widened by the arrangement space of the restricting structure. It is said.

(2) The restricting structure is formed on a restricting convex portion that is formed on the plate-like portion of the chassis and protrudes on the opposite side to the optical member side, and on the pair of first extending portions forming the frame body. And a restriction recess for receiving the restriction protrusion. In this way, if a restriction recess is provided on the chassis side, it is difficult to ensure a sufficient recess size of the restriction recess for the convenience of the arrangement of the restriction structure overlapping the optical member. Compared to the above, it is easy to sufficiently secure the projecting dimension of the regulating convex part formed on the plate-like part of the chassis and the concave dimension of the regulating concave part formed on the pair of first extending parts constituting the frame body. Therefore, the opening restriction function of the first extending portion can be sufficiently exhibited.

(3) The restriction convex portion is arranged at an end portion of the plate-like portion of the chassis. If it does in this way, compared with the case where a regulation convex part is provided in the center side part in a plate-shaped part, a regulation convex part can be formed easily.

(4) The frame main body can receive the clamping member for clamping the optical member between the plate-like portion of the chassis and the plate-like portion of the chassis from the side opposite to the optical member side. A receiving portion and an end of the pair of first extending portions opposite to the second extending portion side, and the optical member and the chassis are extended from the first extending portion. An opening that can be inserted between the sandwiching portion and the receiving portion along a direction, and the restricting structure includes an end portion on the opening portion side of the pair of first extending portions. And at least a front end portion in the insertion direction with respect to the pair of first extending portions in the chassis. According to this configuration, the optical member and the chassis extend in the first extension with respect to the opening formed at the end portion of the pair of first extension portions forming the frame body on the side opposite to the second extension portion side. The frame body is assembled by being inserted between the holding portion and the receiving portion along the extending direction of the existing portion. Since the restriction structure is arranged at least at the opening-side end portions of the pair of first extending portions and the front end portions in the inserting direction with respect to the pair of first extending portions of the chassis, the optical member and the chassis are inserted. Relative displacement of the pair of first extending portions is restricted at an initial stage of the work. Thereby, the assembling workability of the optical member and the chassis with respect to the frame is improved.

(5) The restriction structure is formed on one side of the pair of first extending portions and the chassis, and on the other side, and the chassis is inserted into the opening. The restriction convex part is configured to receive the restriction convex part, and at the end part of the side where the counterpart side is introduced into at least one of the restriction convex part and the restriction concave part, the introduction of the counterpart side is provided. A guide surface for guiding is formed. If it does in this way, a regulation convex part will be received by a regulation crevice at the initial stage where a chassis is inserted in an opening part in a pair of 1st extension parts. At this time, when one of the restriction convex portion and the restriction concave portion is introduced to the other side, the introduction is guided by the guide surface, so that the assembly workability of the chassis is further improved.

(6) The restriction structure is arranged at least in a central portion in the extending direction of the pair of first extending portions and a central portion in the extending direction of the pair of first extending portions in the chassis. ing. According to this configuration, in the state where the connection extension portion is connected to the frame body, the pair of first extension portions has the pair of first extension portions although the center portion in the extension direction is most easily opened. By disposing at least the restriction structure in the central portion of the existing portion and the chassis, it is possible to effectively suppress the dropout of the optical member that may occur with the opening of the pair of first extending portions.

(7) The regulation structure includes a regulation projection formed on one side of the pair of first extending portions and the chassis, and a regulation recess formed on the other side and receiving the regulation projection. Of the opposing surfaces of the restricting convex portion and the restricting concave portion, the inner facing surfaces are in contact with each other, while the outer facing surfaces are spaced apart from each other. If it does in this way, among the opposing surfaces of a control convex part and a control concave part, it will control well that relative displacement is performed so that a pair of 1st extension parts may open by abutting inner facing surfaces. Is done. On the other hand, among the opposing surfaces of the restricting convex portion and the restricting concave portion, the outer facing surfaces are separated from each other, so that when the chassis is assembled to the frame, the restricting convex portion is smoothly received in the restricting concave portion, As a result, assembly workability is improved.

  The illumination device of the present invention includes the above-described optical member holding structure and a light source that is housed in the chassis and supplies light to the optical member. According to such an illuminating device, dropping of the optical member is suppressed, so that the optical performance can be satisfactorily exhibited.

As an embodiment of the lighting device of the present invention, the following configuration is preferable.
(1) The optical member includes at least a light guide plate that guides light from the light source, and the light source is at least one of the second extension part and the connection extension part in the chassis. It is selectively arranged at a position that overlaps either. If it does in this way, light from the light source selectively distribute | arranged to the position which overlaps at least any one of a 2nd extension part and a connection extension part in a chassis will be light-guided by a light-guide plate, and illumination light Is obtained. Since the light source is arranged so as not to overlap with at least the pair of first extending portions, at least the pair of first extending portions is suitable for narrowing the frame and is excellent in design. When narrowing the frame in this way, although the hanging margin on the optical member is narrowed and there is a concern about dropping of the optical member, the opening of the pair of first extending portions is restricted by the restriction structure, Even if the narrowing of the frame proceeds, the optical member is difficult to drop off.

(2) The chassis is provided with a positioning portion that positions the light guide plate with respect to the light source in the extending direction of the pair of first extending portions. If it does in this way, since a light guide plate is positioned with respect to a light source about the extension direction of a pair of 1st extension parts by a positioning part, when assembling a chassis with a frame, a light guide plate will interfere with a light source. Can be prevented.

(3) The light source is selectively disposed at a position overlapping the connection extension portion in the chassis. If it does in this way, since it becomes suitable when aiming at the narrow frame about the 2nd extension part in addition to a pair of 1st extension parts, it is excellent in design nature. Moreover, if the connection extension part is removed from the frame body, the light source can be easily removed, so that the maintenance is excellent.

  The display device of the present invention includes the above-described optical member holding structure and a display panel included at least in the optical member. According to such a display device, since the drop-off of the display panel included at least in the optical member is suppressed, the display performance can be satisfactorily exhibited.

As an embodiment of the display device of the present invention, the following configuration is preferable.
(1) An illumination device including at least a light source housed in the chassis and a light guide plate that is at least included in the optical member and guides light from the light source is provided. An outer peripheral end portion of the light guide plate is sandwiched between the chassis and the frame. In this way, the display panel, the light guide plate, and the chassis can be collectively assembled to the frame in a state where the display panel, the light guide plate, and the chassis are overlapped with each other, so that the assembling workability becomes better.

  The television receiver of the present invention includes the display device described above. According to such a television receiver, since the drop-off of the display panel provided in the display device is suppressed, the display performance related to the television image can be exhibited well.

  According to the present invention, dropping of the optical member can be suppressed.

1 is an exploded perspective view showing a schematic configuration of a television receiver according to Embodiment 1 of the present invention. Plan view of liquid crystal display device Sectional view along line iii-iii in FIG. Sectional view taken along line iv-iv in FIG. The top view which shows the state before attaching the frame main body, the chassis which assembled | attached the liquid crystal panel, the light-guide plate, the reflective sheet, the LED board, etc., and a connection extension part. Bottom view of chassis An enlarged perspective view showing a state before assembling the frame main body and a chassis assembled with a liquid crystal panel, a light guide plate, a reflection sheet, an LED substrate, and the like. The perspective view which shows the state in the middle of assembling | attaching the chassis which assembled | attached the liquid crystal panel, the light-guide plate, the reflective sheet, the LED board, etc. to the frame main body. Enlarged perspective view of FIG. The bottom view of the chassis concerning Embodiment 2 of the present invention. The top view which shows the state before assembling the frame main body which concerns on Embodiment 3 of this invention, the chassis which assembled | attached the liquid crystal panel, the light-guide plate, the reflective sheet, the LED board, etc., and a connection extension part. The bottom view of the chassis concerning Embodiment 4 of the present invention. Sectional drawing which shows the cross-sectional structure of the control structure which concerns on Embodiment 5 of this invention. Bottom view of chassis Sectional drawing which shows the cross-sectional structure of the control structure which concerns on Embodiment 6 of this invention. Bottom view of chassis Sectional drawing which shows the cross-sectional structure of the control structure which concerns on Embodiment 7 of this invention. Bottom view of chassis Sectional drawing which shows the cross-sectional structure of the control structure which concerns on Embodiment 8 of this invention. Sectional drawing which shows the cross-sectional structure of the control structure which concerns on Embodiment 9 of this invention. Sectional drawing which shows the cross-sectional structure of the backlight apparatus which concerns on Embodiment 10 of this invention. Sectional drawing which shows the cross-sectional structure of the organic electroluminescence display which concerns on Embodiment 11 of this invention.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the liquid crystal display device 10 having the optical member holding structure LH is illustrated. In addition, a part of each drawing shows an X axis, a Y axis, and a Z axis, and each axis direction is drawn to be a direction shown in each drawing. Moreover, let the upper side shown in FIG.3 and FIG.4 be a front side, and let the lower side of the figure be a back side.

  As shown in FIG. 1, the liquid crystal display device 10 according to the present embodiment includes a liquid crystal panel 11 that is a display panel (display component), a backlight device 12 that is an illumination device that supplies illumination light to the liquid crystal panel 11, At least a frame 13 that supports the liquid crystal panel 11 from the front side, and a back cabinet (back-side housing member) 14 that holds the liquid crystal panel 11 and the backlight device 12 between the frame 13 are provided. Among these, the liquid crystal panel 11 is assembled to the liquid crystal display device 10 in a posture in which the display surface for displaying an image faces the front side, and uses the illumination light supplied from the backlight device 12 arranged on the back side. The “optical member” is capable of displaying an image on the display surface. The television receiver TV includes at least a tuner substrate T capable of receiving a television image signal in addition to the liquid crystal display device 10 described above, and can display a television image on the display surface of the liquid crystal panel 11. Is done. The tuner board T is accommodated in a space provided between the backlight device 12 and the back cabinet 14.

  As shown in FIGS. 1 and 2, the liquid crystal panel 11 has a horizontally long rectangular (rectangular) shape in plan view, and a pair of glass substrates excellent in translucency are separated from each other by a predetermined gap. And the liquid crystal is sealed between both substrates. The liquid crystal panel 11 is incorporated in the liquid crystal display device 10 in a posture in which the long side direction coincides with the X-axis direction, the short side direction coincides with the Y-axis direction, and the thickness direction coincides with the Z-axis direction. Of the pair of substrates, one substrate (array substrate) has a switching element (for example, TFT) connected to the source wiring and the gate wiring orthogonal to each other, a pixel electrode connected to the switching element, and an orientation. A film or the like is provided, and the other substrate (CF substrate) is a color filter or counter electrode in which colored portions such as R (red), G (green), and B (blue) are arranged in a predetermined arrangement, An alignment film or the like is provided. The liquid crystal panel 11 has a display area (active area) where the display surface is on the center side of the screen and an image can be displayed, and a frame shape (frame shape) which surrounds the display area on the outer peripheral side of the screen. It is divided into a non-display area (non-active area). Note that a pair of front and back polarizing plates are respectively attached to the outer surface sides of the pair of substrates.

  Next, the backlight device 12 will be described. As shown in FIGS. 1 and 3, the backlight device 12 includes a chassis 15 having a plate-like portion 15 a along the plate surface of the liquid crystal panel 11, and an LED 16 (Light Emitting Diode) that is housed in the chassis 15 and serves as a light source. An LED substrate (light source substrate) 17 on which a diode) is mounted, a light guide plate (optical member) 18 that is placed on the plate-like portion 15a and guides light from the LED 16, and the light guide plate 18 and the plate-like portion 15a. And at least a reflection sheet (optical member, reflection member) 19 disposed in a manner interposed therebetween, and an optical sheet (optical member) 20 placed on the light guide plate 18. That is, the backlight device 12 is formed by laminating the optical sheet 20, which is an optical member, the light guide plate 18, and the reflection sheet 19 in order from the front side at a position directly below the liquid crystal panel 11. In FIG. 1, the optical sheet 20 is not shown. The backlight device 12 is provided with an LED substrate 17 at one end (the front side shown in FIG. 1, the left side shown in FIG. 3) of the both ends of the long side. Each LED 16 mounted on the liquid crystal panel 11 is unevenly distributed near one end portion on the long side of the liquid crystal panel 11. As described above, the backlight device 12 according to the present embodiment is a one-side incident type edge light type (side light type) that enters the light guide plate 18 only from one side. Below, each component of the backlight apparatus 12 is demonstrated in detail.

  As shown in FIGS. 1, 3 and 4, the chassis 15 is a plate-like portion (bottom plate portion) having a horizontally long rectangular shape as viewed from the plane as shown in FIGS. ) 15a and a side plate portion 15b that rises from the end of one long side of the plate-like portion 15a toward the front side. The plate-like portion 15a has a posture in which the long side direction coincides with the X-axis direction, the short side direction coincides with the Y-axis direction, and the plate thickness direction coincides with the Z-axis direction. The long side dimension is substantially the same as or slightly smaller than the long side dimension of the light guide plate. Most of the plate-like portion 15a is a light guide plate support portion 15a1 that supports the light guide plate 18 from the back side (the side opposite to the light emitting surface 18a side) together with the reflective sheet 19, whereas the plate-like portion 15a is on the LED substrate 17 side. The end portion is a substrate housing portion 15a2 that bulges to the back side in a stepped shape. Among these, the substrate housing portion 15a2 has a substantially L-shaped cross-section, and is raised from the end portion of the light guide plate support portion 15a1 and rises toward the back side, and the rising tip portion of the rising portion 21 The housing bottom 22 is bent toward the light guide plate support 15a1 and protrudes toward the opposite side. The rising position of the rising portion 21 is located on the opposite side of the LED 16 side from the light incident surface 18b of the light guide plate 18 (to be described later) (near the center of the light guide plate support portion 15a1). The side plate portion 15b is bent and formed so as to rise from the end opposite to the rising portion 21 side in the housing bottom portion 22 constituting the substrate housing portion 15a2 to the front side. The LED board 17 is attached to the side plate portion 15b so as to be in contact with the inner plate surface (the surface facing the light incident surface 18b of the light guide plate 18). That is, it can be said that the side plate portion 15b constitutes a substrate attachment portion to which the LED substrate 17 is attached.

  As shown in FIGS. 3 and 4, the light guide plate support portion 15 a 1 in the plate-like portion 15 a has a first shaft for fastening a first screw member 28 for fixing the back cabinet 14 to be described later to the chassis 15. A member 27 is caulked. The first shaft member 27 is disposed so as to be interposed between the back cabinet 14 and the light guide plate support 15a1, and a screw hole 27a into which the first screw member 28 can be screwed is formed by screwing. . The first shaft member 27 and the first screw member 28 are arranged in a distributed manner within the plate surface of the light guide plate support 15 a 1 and the back cabinet 14. Further, a second shaft member 29 for fastening a second screw member 30 for fixing a connecting extension portion 24 constituting the frame 13 described later to the chassis 15 is caulked to the side plate portion 15b. The second shaft member 29 is disposed so as to be interposed between the connecting extension portion 24 and the side plate portion 15b, and a screw hole 29a into which the second screw member 30 can be screwed is formed. (See FIG. 3). A plurality of the second shaft members 29 and the second screw members 30 are arranged intermittently along the extending direction (X-axis direction) of the connection extending portion 24 and the side plate portion 15b.

  As shown in FIGS. 3 and 5, the LED 16 has a configuration in which an LED chip is sealed with a resin material on a substrate portion fixed to the LED substrate 17. The LED chip mounted on the substrate unit has one main emission wavelength, and specifically, one that emits blue light in a single color is used. On the other hand, the resin material that seals the LED chip is dispersed and blended with a phosphor that emits a predetermined color when excited by the blue light emitted from the LED chip, and generally emits white light as a whole. It is said. In addition, as the phosphor, for example, a yellow phosphor that emits yellow light, a green phosphor that emits green light, and a red phosphor that emits red light are used in appropriate combination, or any one of them is used. It can be used alone. The LED 16 is a so-called top surface light emitting type in which a surface opposite to the mounting surface with respect to the LED substrate 17 is a main light emitting surface 16a.

  As shown in FIGS. 3 and 5, the LED substrate 17 has an elongated plate shape extending along the long side direction of the chassis 15 (X-axis direction, the longitudinal direction of the light incident surface 18 b of the light guide plate 18). The plate surface is accommodated in the chassis 15 in a posture parallel to the X-axis direction and the Z-axis direction, that is, in a posture orthogonal to the plate surfaces of the liquid crystal panel 11 and the light guide plate 18 (optical sheet 20). That is, the LED substrate 17 has a plate thickness in which the long side direction (length direction) on the plate surface coincides with the X-axis direction, and the short side direction (width direction) coincides with the Z-axis direction, and is further orthogonal to the plate surface. The orientation is the same as the Y-axis direction. The LED substrate 17 is mounted such that the plate surface opposite to the mounting surface 17a on which the LED 16 is mounted is in contact with the inner surface of the side plate portion 15b of the chassis 15, and the end portion on the long side of the light guide plate 18 ( The light incident surface 18b) is arranged side by side on the left side shown in FIG. Therefore, the alignment direction of the LED 16 and the LED substrate 17 and the light guide plate 18 is substantially the same as the Y-axis direction, and the optical axis in each LED 16, that is, the traveling direction of light having the highest light emission intensity is the Y-axis direction (liquid crystal panel). 11 in the direction parallel to the plate surface).

  As shown in FIGS. 3 and 5, the LED substrate 17 is mounted on the inner surface, that is, the plate surface facing the light guide plate 18 side (the surface facing the light guide plate 18) on which the LED 16 having the above-described configuration is surface-mounted. The surface 17a. A plurality of LEDs 16 are arranged in a row (linearly) in parallel on the mounting surface 17a of the LED substrate 17 along the length direction (X-axis direction) with a predetermined arrangement interval. That is, it can be said that a plurality of LEDs 16 are intermittently arranged in parallel along the long side direction at one end portion on the long side side of the backlight device 12. Therefore, the alignment direction of the LEDs 16 coincides with the length direction (X-axis direction) of the LED substrate 17 and the light guide plate 18. The interval between the LEDs 16 adjacent to each other in the X-axis direction, which is the arrangement direction of the LEDs 16, that is, the arrangement interval (arrangement pitch) of the LEDs 16 is substantially equal. Further, a wiring pattern (not shown) made of a metal film (such as a copper foil) is provided on the mounting surface 17a of the LED substrate 17 and extends along the X-axis direction and connects adjacent LEDs 16 across the LED 16 group. ) And terminal portions formed at both ends of the wiring pattern are connected to an external LED drive circuit board (not shown) via a wiring member or the like, so that driving power is supplied to each LED 16. It comes to be supplied. The LED drive circuit board is a space provided between the backlight device 12 and the back cabinet 14 together with the above-described tuner board T and panel drive circuit board (not shown) for driving the liquid crystal panel 11. Is housed inside. The base material of the LED substrate 17 is made of a metal such as aluminum, for example, and the above-described wiring pattern (not shown) is formed on the surface thereof via an insulating layer. In addition, as a material used for the base material of the LED board 17, insulating materials, such as a synthetic resin and a ceramic, can also be used.

  The light guide plate 18 is made of a synthetic resin material (for example, acrylic resin such as PMMA or polycarbonate) having a refractive index sufficiently higher than that of air and substantially transparent (excellent translucency). As shown in FIGS. 1 and 3, the light guide plate 18 has a horizontally long rectangular shape in a plan view as in the liquid crystal panel 11 and the chassis 15, and has a plate shape that is thicker than the optical sheet 20. The long side direction on the plate surface coincides with the X-axis direction, the short side direction coincides with the Y-axis direction, and the plate thickness direction orthogonal to the plate surface coincides with the Z-axis direction. The light guide plate 18 is disposed immediately below the liquid crystal panel 11 and the optical sheet 20 in the chassis 15, and the long side of one of the outer peripheral end faces (the front side shown in FIG. 1 and the left side shown in FIG. 3). Are opposed to the LEDs 16 of the LED substrate 17 arranged at one end of the chassis 15 on the long side. Therefore, the alignment direction of the LED 16 (LED substrate 17) and the light guide plate 18 matches the Y-axis direction, while the alignment direction of the optical sheet 20 (liquid crystal panel 11) and the light guide plate 18 matches the Z-axis direction. It is assumed that both directions are orthogonal to each other. The light guide plate 18 has a function of introducing light emitted from the LED 16 in the Y-axis direction and raising and emitting the light toward the optical sheet 20 (front side) while propagating the light inside. .

  As shown in FIGS. 3 and 5, the light guide plate 18 has a substantially flat plate shape extending along each plate surface of the plate-like portion 15 a of the chassis 15 and the optical sheet 20, and the plate surface is X-axis. Direction and the Y-axis direction. Of the pair of front and back plate surfaces of the light guide plate 18, the plate surface facing the front side (the surface facing the optical sheet 20) is a light emitting surface 18 a that emits internal light toward the optical sheet 20 and the liquid crystal panel 11. ing. Of the outer peripheral end surfaces adjacent to the plate surface of the light guide plate 18, among the pair of long side end surfaces that form a longitudinal shape along the X-axis direction (the LED 16 arrangement direction, the LED substrate 17 long side direction), One end face (left side shown in FIG. 3, front side shown in FIG. 5) is opposed to the LED 16 (LED substrate 17) with a predetermined space therebetween, and light emitted from the LED 16 is incident thereon. It is a light incident surface 18b. Since the light incident surface 18 b is opposed to the LED 16, it can be said that it constitutes an “LED facing end surface (light source facing end surface)”. In contrast, among the outer peripheral end surfaces adjacent to the plate surface of the light guide plate 18, the other three end surfaces excluding the light incident surface 18b (the end surface on the long side opposite to the light incident surface 18b). , And a pair of short side ends) are LED non-facing end faces (light source non-facing end faces) that are not opposed to the LEDs 16. The distances between the light incident surfaces 18b and the respective LEDs 16 facing each other are substantially the same. Further, the light incident surface 18b is a surface parallel to the X-axis direction (the LED 16 arrangement direction) and the Z-axis direction, that is, along the plate surface of the LED substrate 17, and a surface substantially orthogonal to the light emitting surface 18a. Is done. Further, the alignment direction of the LED 16 and the light incident surface 18b coincides with the Y-axis direction and is parallel to the light emitting surface 18a.

  As shown in FIG. 3, the reflection sheet 19 is arranged so as to cover the back side of the light guide plate 18, that is, the opposite plate surface opposite to the light emitting surface 18a (the surface facing the plate-like portion 15a of the chassis 15) 18c. Thus, it is possible to reflect the light emitted from the opposite plate surface 18c to the outside on the back side and rise to the front side. In other words, the reflection sheet 19 is disposed between the plate-like portion 15 a of the chassis 15 and the light guide plate 18. The reflection sheet 19 is slightly larger in size in plan view than the light guide plate 18, and can cover the opposite plate surface 18 c of the light guide plate 18 over almost the entire region. Of this reflection sheet 19, the light incident surface 18b side end (one long side end) of the light guide plate 18 extends outward from the light incident surface 18b, that is, toward the LED 16 side. . By reflecting the light existing in the space between the LED substrate 17 and the light incident surface 18b by the extending portion of the reflection sheet 19, the light incident efficiency on the light incident surface 18b is increased. Can do. Further, on the opposite plate surface 18c of the light guide plate 18, a light reflection pattern (see FIG. 5) is formed of a light reflecting portion for reflecting the light in the light guide plate 18 toward the light output surface 18a. (Not shown) is formed. The light reflecting portion forming the light reflecting pattern is formed by printing a light reflecting material (for example, white ink containing a metal oxide such as titanium oxide) on the opposite plate surface 18c of the light guide plate 18. The distribution density of the dots (area ratio per unit area on the opposite plate surface 18c) is from the end on the light incident surface 18b side of the light guide plate 18 in the Y axis direction to the opposite side. It is formed with a distribution that increases as it approaches the end.

  As shown in FIGS. 3 and 4, the optical sheet 20 has a horizontally long rectangular shape when seen in a plane like the liquid crystal panel 11 and the chassis 15. The optical sheet 20 is placed on the front side (light emitting side) of the light guide plate 18 and is disposed between the liquid crystal panel 11 and the light guide plate 18 so as to transmit light emitted from the light guide plate 18. At the same time, the transmitted light is emitted toward the liquid crystal panel 11 while giving a predetermined optical action. The optical sheet 20 has a sheet shape thinner than the light guide plate 18 and a plurality of sheets (two in the present embodiment) are arranged on the light emitting surface 18 a of the light guide plate 18. Specific types of the optical sheet 20 include, for example, a diffusion sheet, a lens sheet, a reflective polarizing sheet, and the like, which can be appropriately selected and used. On the front side of the optical sheet 20 as described above, the liquid crystal panel 11 described above is directly placed. That is, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are included in the liquid crystal display device 10 according to the present embodiment and constitute an optical member are directly stacked without interposing other members. In this state, it is sandwiched and held between a frame 13 and a chassis 15 (back cabinet 14) described below. As described above, the liquid crystal display device 10 according to this embodiment includes the optical member holding structure LH that holds the optical members such as the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 between the frame 13 and the chassis 15. It can be said that it has.

  Next, the frame 13 will be described in detail. The frame 13 is made of metal (for example, aluminum), and as shown in FIGS. 1 and 5, between the plate-like portion 15 a (light guide plate support portion 15 a 1) of the chassis 15 constituting the backlight device 12. Thus, the outer peripheral ends of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members can be collectively held. The frame 13 includes a frame main body 23 that has a substantially channel shape (substantially portal shape) following the three sides included in the outer peripheral end of the optical member such as the liquid crystal panel 11, and the outer periphery of the optical member such as the liquid crystal panel 11. It is composed of two parts including a connecting extension 24 extending along one side excluding three sides included in the end, and the frame main body 23 and the connecting extension 24 are connected to each other. Thus, a horizontally long frame shape (frame shape) surrounding the optical member such as the liquid crystal panel 11 is formed as a whole. In FIG. 5, the liquid crystal panel 11 and the optical sheet 20 are illustrated by a two-dot chain line.

  As shown in FIGS. 1 and 5, the frame main body 23 is a pair of first sides extending respectively along a pair of short-side ends that form opposite sides of an outer peripheral end of an optical member such as the liquid crystal panel 11. The other of the extended portions 25 and the other end sandwiched between the ends of the pair of short sides of the outer peripheral ends of the optical member such as the liquid crystal panel 11, etc. It is comprised from the 2nd extension part 26 extended along the edge part of the long side of the back | inner side shown in FIG.1 and FIG.5. That is, the frame main body 23 is configured to be parallel to each other by bending the pair of first extending portions 25 to the same side from both ends in the extending direction of the second extending portion 26. The pair of first extending portions 25 has an extending direction that coincides with the Y-axis direction, whereas the second extending portion 26 has an extending direction that coincides with the X-axis direction. The directions are perpendicular to each other. The pair of first extending portions 25 are substantially the same in length and shorter than the length of the second extending portion 26. In manufacturing the frame main body 23, a linear base material is formed by extruding a metal material such as aluminum, and then a pair of the main body 23 is formed with respect to the portion corresponding to the second extending portion 26. The portion corresponding to the first extending portion 25 is bent substantially at a right angle, or is subjected to bending or the like, so that it is formed into a substantially channel shape as a whole.

  As shown in FIGS. 3 and 4, the frame main body 23 is disposed on the front side with respect to the liquid crystal panel 11, and between the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the plate-like portion 15 a of the chassis 15. A holding part (optical member support part) 23a for holding the reflection sheet 19 together and a plate-like part 15a of the chassis 15 that can receive from the back side (the side opposite to the optical member side such as the liquid crystal panel 11). Part (chassis support part) 23b and at least a side wall part 23c connecting the frame main body 23 and the receiving part 23b. These clamping part 23a, receiving part 23b, and side wall part 23c are formed in the 1st extension part 25 and the 2nd extension part 26, respectively. In addition, as shown in FIG.1 and FIG.5, the clamping part 23a and the side wall part 23c are continuously formed in the form straddling each 1st extension part 25 and the 2nd extension part 26, On the other hand, The receiving portion 23 b is formed in a form that is divided into each first extending portion 25 and second extending portion 26. The reason why only the receiving portion 23b is divided for each of the extending portions 25 and 26 is due to the method for manufacturing the frame main body 23 described above, and the receiving portion 23b is a bent portion (corner of the frame main body 23). Part) is present inside the clamping part 23a and the side wall part 23c. That is, when manufacturing the frame main body 23, a linear base material is formed by extrusion molding, and then a notched portion is formed by performing cutting or the like on a planned bending portion of a portion corresponding to the receiving portion 23b of the base material. By forming, the receiving portion 23b is divided into three for each extending portion 25, 26, and it is allowed to subsequently bend the substrate. In addition, since the sandwiching portion 23a may be fleshed in the bent portion when the bending process is performed, the surface is smoothed by performing, for example, a diamond cutting process after the bending process. .

  As shown in FIG. 3 and FIG. 4, the holding portion 23 a constituting the frame body 23 is against the end portions of the three sides excluding the end portion on the connection extension portion 24 side of the outer peripheral end portion of the liquid crystal panel 11. The liquid crystal panel 11 can be supported from the front side by being arranged oppositely on the front side and the surface on the back side being in contact with or close to the end of the three sides. The ends of the three sides of the optical member such as the liquid crystal panel 11 are collectively held between the plate-like portion 15a of the chassis 15. The receiving portion 23b is arranged on the back side so as to be opposed to the end portions of the three sides excluding the end portion on the connecting extension portion 24 side of the outer peripheral end portion of the plate-like portion 15a of the chassis 15, and the front side thereof These surfaces are in contact with or close to the end portions of the three sides, so that the chassis 15 can be supported from the back side. As described above, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the chassis 15 can be sandwiched and held between the sandwiching portion 23a and the receiving portion 23b forming the frame body 23. The clamping part 23a has a dimension that protrudes inward from the side wall part 23c, that is, a margin for the liquid crystal panel 11 (overlapping range with the liquid crystal panel 11) is very small. It is assumed that the dimension is smaller than the dimension protruding to the chassis 15, that is, smaller than the allowance for the chassis 15 (the overlapping range with the chassis 15). Specifically, the sandwiching portion 23a is disposed at a position where the inner end position does not reach the display area of the liquid crystal panel 11 and remains in the non-display area, or near the boundary between the display area and the non-display area. . Thereby, narrowing of the frame of the liquid crystal display device 10 is achieved. The receiving portion 23b has a sufficient allowance for the chassis 15, and specifically, the receiving portion 23b is arranged so that its inner end position reaches the display area of the liquid crystal panel 11. Further, the receiving portion 23b has screw holes 23b1 in which screw members (not shown) for fixing the back cabinet 14 to the frame 13 are tightened intermittently at a plurality of locations in the extending direction of the receiving portion 23b. Is formed. The sandwiching portion 23a and the receiving portion 23b are arranged to face each other with a predetermined space (interval) therebetween in the Z-axis direction (normal direction to the plate surface of the optical member). The side wall portion 23c is arranged so as to surround the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19 and the chassis 15 from the outside, and the sandwiching portion 23a extends inward from the front end portion thereof. The receiving portions 23b are formed so as to protrude inward from the end on the back side. Further, a side plate receiving groove portion 23e for receiving a cabinet side plate portion 14b constituting the cabinet 14 described later is formed between the receiving portion 23b and the side wall portion 23c in the frame main body 23 so as to open to the back side. In addition, as shown in FIG.1 and FIG.5, the side wall part 23c and the clamping part 23a which a pair of 1st extension part 25 has are facing the 2nd extension part 26 side rather than the receiving part 23b. It is arranged in a protruding form.

  As shown in FIGS. 1 and 5, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the chassis 15 that are stacked on each other are extended to the frame body 23 from the first extension portion 25. There is an opening 23d that can be inserted between the sandwiching portion 23a and the receiving portion 23b along the existing direction (Y-axis direction). The opening 23d has a sandwiching portion 23a and a receiving portion 23b at the end of the pair of first extending portions 25 opposite to the second extending portion 26 side (the side to which the connecting extending portion 24 is connected). The space (the holding space between the optical member such as the liquid crystal panel 11 and the chassis 15) between the first extending portion 25 and the second extending portion 26 is directed to the opposite side to the second extending portion 26 side. It is formed to release. As a result, a laminated body constituted by laminating the liquid crystal panel 11, which is an optical member, the optical sheet 20, the light guide plate 18, and the reflective sheet 19 on the plate-like portion 15a of the chassis 15 is formed along the plate surface of the frame body. It is possible to assemble them all together by inserting (sliding) them into 23.

  Since the LED board 17 is assembled together with the light guide plate 18 in advance in the chassis 15 that is slidably assembled to the frame body 23 in this way, the light guide plate 18 is attached to the LED board 17 when the frame body 23 is assembled. There is a concern that the light guide plate 18 interferes with the LED 16 when the relative displacement is caused. On the other hand, as shown in FIG. 5, the chassis 15 is provided with a positioning portion 36 for positioning the light guide plate 18 with respect to the LED 16 in the insertion direction with respect to the frame main body 23 (the extending direction of the first extending portion 25). It has been. The positioning portions 36 are disposed at both ends of the side plate portion 15b of the chassis 15 in the extending direction (X-axis direction), and are disposed so as to sandwich the LED board 17 from both sides in the length direction. The positioning portion 36 is attached to the inner plate surface of the side plate portion 15b and protrudes inward from the plate surface. Positioning recesses 37 for receiving the positioning portions 36 described above are formed in notches at both ends in the length direction at the end portion on the long side having the light incident surface 18b of the light guide plate 18, that is, both corner portions. When the opposing surfaces of the positioning portion 36 and the positioning recess 37 abut against each other, the light guide plate 18 is positioned with respect to the side plate portion 15b and the LED substrate 17 in the Y-axis direction, whereby the Y of the light incident surface 18b and the LED 16 is determined. The positional relationship in the axial direction is kept constant. Further, the light guide plate 18 is positioned with respect to the side plate portion 15 b and the LED substrate 17 also in the X-axis direction by fitting the pair of positioning portions 36 into the pair of positioning recesses 37.

  As shown in FIGS. 1 and 5, the connecting extension 24 that constitutes the frame 13 together with the frame body 23 is one of the outer peripheral ends of the optical member such as the liquid crystal panel 11 (the front side shown in FIGS. 1 and 5). ) Along the end of the long side. The extension direction of the connecting extension part 24 coincides with the X-axis direction and is parallel to the extension direction of the second extension part 26 constituting the frame body 23. The length of the connecting extension 24 is substantially the same as the length of the second extension 26. In the manufacturing process, the connection extending portion 24 is formed by subjecting a base material obtained by extruding a metal material such as aluminum to a predetermined process in the same manner as the frame main body 23 described above. As shown in FIG. 3, the connection extending portion 24 is arranged on the front side with respect to the liquid crystal panel 11, and between the plate-like portion 15 a of the chassis 15, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection. The sheet 19 is composed of a clamping part (optical member support part) 24a for clamping the sheet 19 in a lump, and a side wall part 24b protruding from the outer end part of the clamping part 24a toward the back side, and the cross-sectional shape is substantially L-shaped. I am doing.

  Specifically, as shown in FIG. 3, the sandwiching portion 24 a is an end portion of one side excluding three end portions on the frame body 23 side of the outer peripheral end portion of the liquid crystal panel 11 (an end on one long side side). The liquid crystal panel 11 can be supported from the front side by being arranged oppositely to the front side and the surface on the back side in contact with or close to the end of the same side. Thus, the end of the same side of the optical member such as the liquid crystal panel 11 is collectively held between the plate-like portion 15 a of the chassis 15. The sandwiching portion 24 a included in the connecting extension portion 24 has a surface that is flush with the surface of the sandwiching portion 23 a included in the frame main body 23, thereby avoiding a step between the two. In addition to the edge part of one side in the liquid crystal panel 11 described above, the clamping part 24a included in the connecting extension part 24 includes an edge part where the light incident surface 18b of the light guide plate 18 is disposed, the LED 16, the LED board 17, and the chassis The 15 side plate portions 15b are arranged so as to overlap in a plan view. Therefore, the clamping part 24a included in the connecting extension part 24 has a dimension that protrudes inward from the side wall part 24b, and is larger than the same dimension of the clamping part 23a included in the frame body 23. A reflective member (light-shielding member) 31 having light-shielding properties and light-reflecting properties for reflecting light is disposed on the back side of the sandwiching portion 24a of the connecting extension portion 24, that is, the space on the LED 16 side. . The reflection member 31 has an inner end in contact with the end on the LED 16 side of the liquid crystal panel 11, covers an end on the LED 16 side of the optical sheet 20 from the front side, covers the LED 16 and the LED substrate 17 from there, and covers the chassis 15. It is formed over a range up to the side plate portion 15b. Thereby, the light emitted from the LED 16 is efficiently incident on the light incident surface 18 b of the light guide plate 18 by being reflected by the reflecting member 31, and directly incident on the end surface of the liquid crystal panel 11 without passing through the light guide plate 18. The situation to do is to be avoided. The reflection member 31 extends so as to cover the outer plate surface of the side plate portion 15 b of the chassis 15. The side wall part 24b which the connection extension part 24 has is distribute | arranged on the outer side so that the 2nd shaft member 29 may be interposed between the side-plate parts 15b of the chassis 15. FIG. A screw insertion hole 24b1 through which the second screw member 30 for fixing the connection extending portion 24 to the chassis 15 passes is formed through the side wall portion 24b. The second screw member 30 can be fixed to the chassis 15 by being screwed into the screw hole of the second shaft member 29 through the screw insertion hole 24b1. Further, a side plate receiving portion 24b2 for receiving a cabinet side plate portion 14b constituting the back cabinet 14 described below is formed on the side wall portion 24b so as to protrude inward.

  The back cabinet 14 is formed in a substantially box shape that is open to the front as a whole as shown in FIGS. 1, 3, and 4 by pressing the metal plate material. The back cabinet 14 has a cabinet bottom plate portion 14a that is horizontally long in the same manner as the liquid crystal panel 11 in a plan view, and an outer end of each side (a pair of long sides and a pair of short sides) in the cabinet bottom plate portion 14a. It consists of the cabinet side board part 14b which stands | starts up toward the front side. The cabinet bottom plate portion 14a is disposed so as to cover the plate-like portion 15a of the chassis 15 and the receiving portion 23b of the frame 13 over almost the entire region from the back side. A screw insertion hole 14a1 through which the first screw member 28 for fixing the back cabinet 14 to the chassis 15 passes is formed through the cabinet bottom plate portion 14a. Each cabinet side plate portion 14 b has a rising tip from the cabinet bottom plate portion 14 a inserted into the side plate receiving groove portion 23 e of the frame body 23 or abutted against the side plate receiving portion 24 b 2 of the connecting extension portion 24.

  As described above, the frame of the liquid crystal display device 10 (optical member holding structure LH) can be narrowed so that the holding portion 23a of the frame main body 23 constituting the frame 13 has a small allowance for the liquid crystal panel 11. When the frame main body 23 is deformed such as bending, the liquid crystal panel 11 is likely to be insufficiently hooked, and in some cases, the liquid crystal panel 11 may drop off. In addition, when an optical member such as the liquid crystal panel 11 is inserted into the frame body 23 constituting the frame 13 along the plate surface, the pair of second members constituting the frame body 23 are assembled. There is a concern that the extending portions 25 may be deformed so as to be separated from each other. When opening deformation occurs in the pair of first extending portions 25, an optical member such as the liquid crystal panel 11 cannot be sandwiched between the chassis 15 and an assembling workability may be deteriorated.

  Therefore, in the present embodiment, as shown in FIG. 4, the pair of first extending portions 25 is opened by engaging the pair of first extending portions 25 and the chassis 15 that form the frame body 23 with each other. Thus, a restriction structure 32 for restricting relative displacement is provided. Since the relative displacement of the pair of first extending portions 25 is restricted by the restricting structure 32 so that the pair of first extending portions 25 is opened, the amount of the holding portion 23a of the pair of first extending portions 25 with respect to the liquid crystal panel 11 is constant. As a result, it becomes difficult to cause a situation in which the liquid crystal panel 11 falls off even if the frame is narrowed and the above-mentioned margin for the liquid crystal panel 11 becomes very small. Moreover, the pair of first extending portions 25 are opened by the restricting structure 32 even when the optical member such as the liquid crystal panel 11 is inserted into the frame body 23 along the plate surface to perform assembly work. Since the relative displacement is restricted in such a manner, the pair of first extending portions 25 are less likely to be opened and deformed so as to be separated from each other, and thus the optical member such as the liquid crystal panel 11 is sandwiched between the chassis 15 and the like. It becomes difficult to cause a situation where it cannot be performed, and the assembly workability is improved.

  As shown in FIG. 4, the regulation structure 32 is viewed in plan with respect to any of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members (the method of the plate surface of the optical member). (Viewed from the direction of the line) Specifically, the regulation structure 32 is arranged closer to the center (inward) of the optical member such as the liquid crystal panel 11 than the sandwiching portion 23 a of the frame body 23. The restricting structure 32 is formed on the plate-like portion 15 a of the chassis 15, and is formed on the back side, that is, the restricting convex portion 33 protruding to the opposite side to the optical member side such as the liquid crystal panel 11, and the pair of first extending portions 25. And a restriction recess 34 that receives the restriction protrusion 33. Hereinafter, specific configurations of the restriction convex portion 33 and the restriction concave portion 34 will be described in detail.

  As shown in FIGS. 4 and 6, the restricting convex portion 33 is formed in a paired manner at both ends on the short side of the plate-like portion 15 a of the chassis 15. The restriction convex portion 33 has a plate-like shape (rail shape) extending along the short side direction of the plate-like portion 15a, that is, the insertion direction with respect to the frame main body 23, and the plate surface is parallel to the insertion direction. In addition, it is orthogonal to the plate surface of the plate-like portion 15a. That is, the restricting convex portion 33 has its plate surface parallel to the Y-axis direction and the Z-axis direction, the extending direction is the Y-axis direction, and the width direction (the protruding direction from the plate-like portion 15a) is the Z-axis direction. And the plate | board thickness direction corresponds with the X-axis direction, respectively. The restricting convex portion 33 is formed over most of the light guide plate support portion 15a1 (substantially the entire region excluding the end portion on the substrate housing portion 15a2 side) of the plate-like portion 15a, and is opposite to the substrate housing portion 15a2 side. End, that is, from the front end in the insertion direction to the frame body 23, including the central portion in the same insertion direction (extending direction of the first extension portion 25), near the substrate housing portion 15a2 (near the rear end portion in the insertion direction) ). When the chassis 15 is manufactured, the restriction convex portion 33 is formed with a slit S in the vicinity of the end portion on the substrate housing portion 15a2 side of both ends on the short side of the light guide plate support portion 15a1 of the plate-like portion 15a. It is formed by bending the front side portion in the insertion direction toward the back side. The pair of restricting convex portions 33 includes an inner plate facing each other, that is, a plate surface (inner facing surface) 33a facing the center side of the optical member, and an outer plate surface (outer facing surface) facing opposite to each other. ) 33b, of which the inner plate surface 33a is in contact with the inner facing surface 34a of the regulating recess 34 described below, thereby restricting the opening of the pair of first extending portions 25. Is possible.

  As shown in FIGS. 4 and 5, the restriction recesses 34 are respectively formed in a pair with the pair of first extending portions 25 of the frame body 23. The restricting recesses 34 extend along the extending direction (Y-axis direction) of each first extending portion 25, that is, the insertion direction of a laminated body such as an optical member with respect to the frame body 23 and the extending direction of the restricting convex portion 33. It has a groove shape. The restriction recess 34 has an extending direction that coincides with the Y-axis direction, a depth direction that coincides with the Z-axis direction, and a groove width direction that coincides with the X-axis direction. The regulating recess 34 is formed over the entire length of each first extending portion 25. Therefore, the regulating recess 34 is inserted in the direction in which the laminated body such as the optical member is inserted from the end of the first extending portion 25 on the opening 23d side (the front side in the insertion direction) that receives the laminated body such as the optical member. It can be said that it extends to the end on the side opposite to the opening 23d side (the back side in the insertion direction) including the central portion in the extending direction of the first extending portion 25). As a result, even in the initial stage of assembling the laminated body formed by laminating the optical member such as the liquid crystal panel 11 on the chassis 15 so as to be inserted into the frame main body 23, the regulating convex portion 33 is fitted in the regulating concave portion 34. As a result, in addition to the opening of the pair of first extending portions 25 being restricted, even when the assembly is completed, the opening of the pair of first extending portions 25 is restricted over the entire length. In the first extending portion 25, the center portion in the extending direction in which the opening is most likely to occur is effectively restricted by the restricting convex portion 33 and the restricting concave portion 34 that are engaged with each other. The regulating recess 34 is a surface on the front side of the receiving portion 23b that is opposed to the back side of the plate-like portion 15a of the chassis 15, that is, the side from which the regulating projection 33 protrudes, in each first extending portion 25. It is formed by denting. The restriction recess 34 is arranged on the inner side of the first extending portion 25 with respect to the sandwiching portion 23a and the side plate receiving groove portion 23e in a plan view.

  As shown in FIG. 4, the regulation recess 34 has a groove width that is relatively larger than the plate thickness of the regulation projection 33. And while the opposing surface 34a inside the regulation convex part 33 in the regulation concave part 34 is in contact with the plate surface 33a inside the regulation convex part 33, the outside opposing surface in the regulation concave part 34 with respect to the regulation convex part 33 34 b is arranged so as to be separated from the plate surface 33 b so as to have a predetermined clearance with the plate surface 33 b on the outside of the restricting convex portion 33. Therefore, in a state in which the pair of restricting convex portions 33 are fitted in the pair of restricting concave portions 34, the pair of first extending portions 25 are hardly opened away from each other. On the other hand, in the process in which the pair of restricting convex portions 33 are fitted into the pair of restricting concave portions 34, the outer plate surface 33b and the outer facing surface 34b are hardly in contact with each other, so that the frictional resistance accompanying the progress of the fitting. As a result, the assembly workability is improved. Further, the distance from one inner facing surface 34 a to the other inner facing surface 34 a in the pair of regulating concave portions 34 is such that the distance from one inner plate surface 33 a to the other inner plate surface 33 a in the pair of regulating convex portions 33. Is approximately equal to the distance to In addition, since this control recessed part 34 is each formed in the 1st extension part 25 of the frame main body 23 manufactured by extrusion molding, it is similarly formed in the 2nd extension part 26 (FIG. 3). reference).

  As shown in FIG. 5 and FIG. 7, the introduction of the regulation convex portion 33 is guided to the end portion of the regulation concave portion 34 on the opening 23 d side, that is, the end portion on the side where the counterpart regulation convex portion 33 is introduced. A guide surface 35 is formed. The guide surface 35 is formed by cutting out the inner groove edge at the end of the restricting recess 34 on the opening 23d side, and the groove width of the restricting recess 34 is the opening end side, that is, the insertion direction of the restricting protrusion 33. The taper is formed so as to be wider toward the front side and to be narrower toward the back side in the insertion direction of the restricting convex portion 33. As a result, when the restriction convex portion 33 is inserted into the restriction concave portion 34, the front end portion in the insertion direction of the restriction convex portion 33 is brought into sliding contact with the guide surface 35, so that the restriction convex portion 33 becomes the restriction concave portion 34. The chassis 15 is smoothly introduced, and thereby the assembling workability of the chassis 15 becomes better.

  The liquid crystal display device 10 according to the present embodiment has the above-described structure, and then an assembly method thereof will be described. When the liquid crystal display device 10 is assembled, first, the LED substrate 17 and the positioning portion 36 are attached to the side plate portion 15b of the chassis 15, and the shaft members 27 and 29 are respectively crimped to the plate-like portion 15a and the side plate portion 15b. Subsequently, the reflection sheet 19, the light guide plate 18, and the optical sheet 20 are sequentially stacked on the plate-like portion 15 a of the chassis 15. Further, as shown in FIGS. 5 and 7, a liquid crystal panel is formed on the optical sheet 20. 11 are stacked. And the laminated body (lamination | stacking unit) which consists of the chassis 15, the reflection sheet 19, the light-guide plate 18, the optical sheet 20, and the liquid crystal panel 11 was formed between the edge parts of a pair of 1st extension part 25 in the frame main body 23. It is made to insert at a time between the clamping part 23a and the receiving part 23b through the opening part 23d.

  Along with the insertion of the laminated body, a pair of restricting convex portions 33 provided on the bottom plate portion 15a of the chassis 15 is provided on each first extending portion 25 of the frame main body 23 as shown in FIGS. The pair of restriction recesses 34 are inserted. As described above, in the initial stage of the stacking operation of the laminated body, the relative displacement of the pair of first extending portions 25 is restricted by the restriction structure 32, so that the assembly workability is improved. The optical member such as the liquid crystal panel 11 can be firmly clamped between the chassis 15 by the sandwiching portion 23a, and it is difficult for the optical member such as the liquid crystal panel 11 to drop off during the assembly operation. At this time, the restriction convex portion 33 introduced into the restriction concave portion 34 is guided smoothly by introduction of the front end portion in the insertion direction in sliding contact with the guide surface 35 formed in the restriction concave portion 34. Workability related to insertion is good. Moreover, the light guide plate 18 is restricted from being displaced so as to approach the LED 16 when the positioning portion 36 on the chassis 15 side is brought into contact with the positioning recess 37 formed in the corner portion on the LED 16 side. Even when an impact or vibration occurs when the above-described laminate is inserted, a situation where the light incident surface 18b interferes with the LED 16 is unlikely to occur. This avoids a situation where the light incident surface 18b and the LED 16 are damaged. In addition, in FIG. 8, illustration of LED board 17, the reflective member 31, the positioning part 36, etc. is abbreviate | omitted.

  When the laminated body is inserted to the back end position of the frame main body 23, the end portions of the three sides of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 are sandwiched by the frame main body 23 and the chassis 23a. And 15 plate-like portions 15a. In other words, the end portions of the three sides of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the chassis 15 are sandwiched and held between the sandwiching portion 23a and the receiving portion 23b of the frame body 23. The Subsequently, an operation of connecting the connection extending portion 24 to the frame main body 23 is performed. The opening 23d of the frame body 23 is closed by fitting the connecting extension 24 between the ends on the opening 23d side of the pair of first extending portions 25 forming the frame body 23. The connection extending portion 24 is configured such that the second screw member 30 is passed through the screw insertion hole 24b1 and the second screw member 30 is screwed into the screw hole 29a of the second shaft member 29 on the chassis 15 side. , Fixed to the chassis 15. As a result, the laminated body including the chassis 15, the reflection sheet 19, the light guide plate 18, the optical sheet 20, and the liquid crystal panel 11 is kept from being detached from the frame body 23. In addition, since the frame 13 having a frame shape as a whole is configured by assembling the connecting extension portion 24 to the frame main body 23, the outer peripheral end portions of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19. Is sandwiched between the sandwiching portions 23 a and 24 a of the frame 13 and the plate-like portion 15 a of the chassis 15.

  When the assembling work of the frame 13 is thus completed, the assembling work of the back cabinet 14 is performed next. The back cabinet 14 is assembled from the back side to the frame 13 and the chassis 15 in a posture in which each cabinet side plate portion 14b faces the front side. At this time, each cabinet side plate portion 14b is received by the side plate receiving groove portion 23e of the frame main body 23 and the side plate receiving portion 24b2 of the connection extending portion 24, so that the cabinet 14 is in the X axis direction, the Y axis direction, and the Z axis direction. Positioned. In this state, the first screw member 28 is screwed into the screw hole 27a of the first shaft member 27 of the plate-like portion 15a of the chassis 15 through the screw insertion hole 14a1 formed in the cabinet bottom plate portion 14a of the cabinet 14. Thus, the back cabinet 14 is fixed to the chassis 15. Further, the back cabinet 14 can be fixed to the frame 13 by tightening a screw member (not shown) in the screw hole 23 b 1 formed in the receiving portion 23 b of the frame 13. Prior to the assembly of the back cabinet 14, it is preferable to attach substrates such as the tuner substrate T to the plate-like portion 15 a of the chassis 15. Thus, the assembly of the television receiver TV and the liquid crystal display device 10 is completed.

  As described above, the optical member holding structure LH of the present embodiment has the liquid crystal panel 11, which is a rectangular plate-like optical member, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the liquid crystal panel 11 which is an optical member. The chassis 15 having a plate-like portion 15a along the plate surfaces of the optical sheet 20, the light guide plate 18 and the reflection sheet 19, and the outer peripheral ends of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18 and the reflection sheet 19 as optical members. And a frame 13 that sandwiches the outer peripheral end portions of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19, which are optical members, with the plate-like portion 15 a of the chassis 15. In addition, a pair of sides forming the opposite sides of the three sides included in the outer peripheral ends of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members. A pair of first extending portions 25 extending along the ends, and an end portion on the same side of the pair of first extending portions 25 and the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflecting sheet that are optical members A frame main body 23 including a second extending portion 26 extending along a side portion sandwiched between a pair of side portions of the three side portions of the liquid crystal panel 11 and the optical sheet 20 that are optical members. The light guide plate 18 and the reflection sheet 19 are connected to the pair of first extending portions 25 that extend along the remaining side portions excluding the three side portions of the outer peripheral end portions and form the frame body 23. The pair of first extending portions are provided on the frame 13 having the connecting extending portion 24, the pair of first extending portions 25 forming the frame main body 23, and the chassis 15, respectively, and are engaged with each other in an uneven manner. The relative displacement to open 25 It includes a regulating structure 32 that win, the.

  As described above, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19, which are optical members, are sandwiched between the plate-like portion 15 a of the chassis 15 and the frame 13 at the outer peripheral ends. Is a pair of sides forming the opposite sides of the three sides included in the outer peripheral ends of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19, which are optical members. Between the first extending part 25 and the plate-like part 15a, the side part sandwiched between the pair of side parts of the three side parts constitutes the second extending part 26 and the plate constituting the frame body 23. Among the outer peripheral end portions of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members, the remaining side portions excluding the three side portions are a pair of first portions between the first portion 15 a and the shape portion 15 a. Connection extension connected to the extension 25 Between 24 and the plate portion 15a, it is clamped respectively. Since the frame main body 23 has a configuration in which the pair of first extending portions 25 are connected to the second extending portion 26, for example, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflective sheet 19, and the like that are optical members When the chassis 15 is assembled so as to be inserted into the pair of first extending portions 25 from the side opposite to the second extending portion 26 side, the pair of first extending portions 25 are deformed so that the pair of first extending portions 25 are opened. There is concern. In that respect, the pair of first extending portions 25 and the chassis 15 forming the frame main body 23 are regulated so as to restrict relative displacement so that the pair of first extending portions 25 are opened by being engaged with each other. 32 is provided, the opening deformation of the pair of first extending portions 25 is suppressed, whereby the liquid crystal panel 11 which is an optical member between the pair of first extending portions 25 and the plate-like portion 15a, The optical sheet 20, the light guide plate 18, and the reflection sheet 19 can be firmly held. Even in a state where the connection extension portion 24 is connected to the frame body 23, the opening of the pair of first extension portions 25 is restricted by the restriction structure 32, so that the liquid crystal panel 11, the optical sheet 20, and the light guide plate which are optical members The drop-off of 18 and the reflection sheet 19 can be suitably suppressed. In particular, even when the frame is narrowed, and the allowance of the frame 13 to the outer peripheral ends of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19, which are optical members, is reduced by the restriction structure 32. The situation in which the frame 13 is detached from the outer peripheral end portions of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19, which are optical members, by restricting relative displacement so that the pair of first extending portions 25 are opened. This is suitable for narrowing the frame. The restricting structure 32 is provided on the pair of first extending portions 25 and the chassis 15, and may be provided on the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflective sheet 19 that are optical members. Therefore, adverse effects on the optical performance of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18 and the reflection sheet 19, which are optical members, are avoided.

  The restricting structure 32 is arranged at a position overlapping the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members. In this way, if the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19, which are the optical members, are arranged in a non-overlapping arrangement, the arrangement structure of the restriction structure 32 is assumed. Compared to a wider frame, it is more suitable for narrowing the frame.

  The restricting structure 32 is formed on the plate-like portion 15a of the chassis 15, and the restricting convex portion 33 protruding to the opposite side to the liquid crystal panel 11, which is an optical member, the optical sheet 20, the light guide plate 18, and the reflecting sheet 19 side. And a restriction recess 34 that is formed in the pair of first extending portions 25 forming the frame body 23 and receives the restriction protrusion 33. In this way, if a restriction recess is provided on the chassis 15 side, the restriction structure is arranged so as to overlap the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members. For convenience, it is difficult to sufficiently secure the recess size of the restriction recess, and the protrusion size of the restriction projection 33 formed on the plate-like portion 15a of the chassis 15 and the pair of first first members forming the frame main body 23. It becomes easy to sufficiently secure the recess dimensions of the restricting recesses 34 formed in the extending portion 25, so that the opening restricting function of the first extending portion 25 can be sufficiently exhibited.

  Further, the restricting convex portion 33 is disposed at an end portion of the plate-like portion 15 a of the chassis 15. In this way, the restricting convex portion 33 can be easily formed as compared with the case where the restricting convex portion is provided in the central portion of the plate-like portion 15a.

  The frame main body 23 includes a sandwiching portion 23 a that sandwiches the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19, which are optical members, and the plate-like portion of the chassis 15. A receiving portion 23b that can receive the portion 15a from the side opposite to the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflecting sheet 19 that are optical members, and a second extension in the pair of first extending portions 25 The liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the chassis 15, which are optical members, are formed between the end portions opposite to the existing portion 26 side, and the extending direction of the first extending portion 25. And the opening portion 23d that can be inserted between the sandwiching portion 23a and the receiving portion 23b, and the restricting structure 32 is an end portion of the pair of first extending portions 25 on the opening portion 23d side. And Sha It is at least disposed on a front end of the insertion direction with respect to the pair of first extending portion 25 in the sheet 15. In this way, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the chassis 15, which are optical members, are the second extending portions 26 in the pair of first extending portions 25 that form the frame body 23. The frame main body is inserted between the holding portion 23b and the holding portion 23b along the extending direction of the first extending portion 25 with respect to the opening 23d formed at the end opposite to the side. 23 is assembled. Since the restriction structure 32 is disposed at least at the end of the pair of first extending portions 25 on the opening 23d side and the front end of the chassis 15 in the insertion direction with respect to the pair of first extending portions 25. Relative displacement of the pair of first extending portions 25 is restricted at the initial stage of insertion of the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the chassis 15 as members. Thereby, the workability of assembling the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, the reflection sheet 19, and the chassis 15 that are optical members with respect to the frame 13 is improved.

  Further, the regulation structure 32 is formed on one side of the pair of first extending portions 25 and the chassis 15 and on the other side, and the chassis 15 is inserted into the opening 23d. Accordingly, a restriction concave portion 34 that receives the restriction convex portion 33 is formed. A guide surface 35 for guiding the above is formed. In this manner, the restriction convex portion 33 is received by the restriction concave portion 34 at the initial stage where the chassis 15 is inserted into the opening 23 d in the pair of first extending portions 25. At this time, when one of the restriction convex portion 33 and the restriction concave portion 34 is introduced to the other side, the introduction is guided by the guide surface 35, so that the assembly workability of the chassis 15 is better. It will be a thing.

  Further, the restricting structure 32 is disposed at least in a central portion in the extending direction of the pair of first extending portions 25 and a central portion in the extending direction of the pair of first extending portions 25 in the chassis 15. Yes. In this way, in the state where the connection extension part 24 is connected to the frame body 23, the pair of first extension parts 25 is most easily opened at the center in the extension direction, The liquid crystal panel 11 and the optical sheet 20 that are optical members that can be generated when the pair of first extending portions 25 are opened by disposing at least the restriction structure 32 in the central portion of the first extending portion 25 and the chassis 15. Further, the light guide plate 18 and the reflection sheet 19 can be effectively prevented from falling off.

  The restricting structure 32 includes a restricting convex portion 33 formed on one side of the pair of first extending portions 25 and the chassis 15, and a restricting concave portion 34 formed on the other side and receiving the restricting convex portion 33. Among the opposing surfaces of the regulating convex portion 33 and the regulating concave portion 34, the inner plate surface 33a and the inner opposing surface 34a are in contact with each other, whereas the outer plate surface 33b and the outer surface Are arranged so as to be separated from each other. If it does in this way, a pair of 1st extension parts 25 will be in contact by the inner side plate surface 33a and the inner side opposing surface 34a contact | abutting among the opposing surfaces of the control convex part 33 and the control recessed part 34. The relative displacement to open is well regulated. On the other hand, since the outer plate surface 33b and the outer facing surface 34b of the opposing surfaces of the restricting convex portion 33 and the restricting concave portion 34 are separated from each other, when the chassis 15 is assembled to the frame 13, the restricting portion The convex portion 33 is smoothly received in the restricting concave portion 34, so that the assembly workability is good.

  The backlight device (illumination device) 12 according to this embodiment includes the above-described optical member holding structure LH, and an LED (light source) that is housed in the chassis 15 and supplies light to the optical sheet 20 and the light guide plate 18 that are optical members. 16). According to such an illuminating device, the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members are prevented from falling off, so that the optical performance can be satisfactorily exhibited.

  Further, the optical member includes at least a light guide plate 18 that guides light from the LED 16, and the LED 16 includes at least one of the second extending portion 26 and the connecting extending portion 24 in the chassis 15. It is selectively arranged at the overlapping position. In this way, light from the LEDs 16 that are selectively arranged in the chassis 15 so as to overlap at least one of the second extending portion 26 and the connecting extending portion 24 is guided by the light guide plate 18. Illumination light can be obtained. Since the LED 16 is arranged so as not to overlap with at least the pair of first extending portions 25, at least the pair of first extending portions 25 is suitable for narrowing the frame and is excellent in design. When the frame is narrowed in this way, the margin for the liquid crystal panel 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 that are optical members is narrowed, and the liquid crystal panel 11, the optical sheet 20, and the light guide that are optical members are narrowed. Although the optical plate 18 and the reflection sheet 19 are feared to drop off, the pair of first extending portions 25 are restricted from opening by the restricting structure 32, so that the liquid crystal panel which is an optical member even if the frame is narrowed 11, the optical sheet 20, the light guide plate 18, and the reflection sheet 19 are difficult to drop off.

  Further, the chassis 15 is provided with a positioning portion 36 for positioning the light guide plate 18 with respect to the LED 16 in the extending direction of the pair of first extending portions 25. In this way, the light guide plate 18 is positioned with respect to the LED 16 in the extending direction of the pair of first extending portions 25 by the positioning portion 36, so that the light guide plate 18 is assembled when the chassis 15 is assembled to the frame 13. Can be prevented from interfering with the LED 16.

  In addition, the LEDs 16 are selectively arranged at positions where the chassis 15 overlaps with the connection extension portion 24. If it does in this way, in order to narrow down the frame about the 2nd extension part 26 in addition to a pair of 1st extension parts 25, it is excellent in design nature. Moreover, if the connection extension part 24 is removed from the frame main body 23, it becomes possible to remove the LED 16 easily, so that the maintainability is excellent.

  A liquid crystal display device (display device) 10 according to this embodiment includes the above-described optical member holding structure LH and a liquid crystal panel (display panel) 11 included at least in the optical member. According to the liquid crystal display device 10 as described above, since the drop-off of the liquid crystal panel 11 included at least in the optical member is suppressed, display performance can be exhibited well.

  Further, a backlight device 12 including at least an LED 16 housed in the chassis 15 and a light guide plate 18 that is at least included in the optical member and guides light from the LED 16 is provided. The outer peripheral end of the light guide plate 18 is sandwiched between the chassis 15 and the frame 13. In this way, the liquid crystal panel 11, the light guide plate 18 and the chassis 15 can be assembled to the frame 13 in a state of being overlapped with each other, so that the assembly workability is better. Become.

  The television receiver TV according to this embodiment includes the liquid crystal display device 10 described above. According to such a television receiver TV, the drop-off of the liquid crystal panel 11 provided in the liquid crystal display device 10 is suppressed, so that the display performance relating to the television image can be exhibited well.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIG. In this Embodiment 2, the thing which provided the convex part side guide surface 38 in the regulation convex part 133 side is shown. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

  As shown in FIG. 10, a convex side guide surface 38 is formed on the end of the regulating convex part 133 according to the present embodiment on the side where a counterpart regulating concave part (not shown) is introduced. The convex side guide surface 38 is an end of the regulating convex 133 on the opposite side of the bottom plate portion 115a of the chassis 115 from the substrate accommodating portion 115a2 side, that is, the inner end of the front end in the insertion direction with respect to the frame main body not shown. It is formed in the edge and is formed in a taper shape so that the width dimension of the restriction convex part 133 becomes smaller toward the front end side in the insertion direction. Accordingly, the convex side guide surface 38 has an inclination that follows a guide surface formed on the side of the regulating recess (not shown), and the regulation convex portion 133 is introduced into the regulating recess in cooperation with the guiding surface. It can be further smoothed.

<Embodiment 3>
A third embodiment of the present invention will be described with reference to FIG. In the third embodiment, the structure of the frame main body 223 and the connecting extension portion 224 is changed from the first embodiment. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

  In the frame main body 223 according to the present embodiment, as shown in FIG. 11, the holding portion 223a and the side wall portion 223c included in the pair of first extending portions 225 are retracted closer to the second extending portion 226 than the receiving portion 223b. It is arranged in a form. In other words, the receiving portion 223b included in the pair of first extending portions 225 is arranged so as to protrude toward the opposite side of the second extending portion 226 side from the sandwiching portion 223a and the side wall portion 223c. Yes. In this way, when the laminated body formed by laminating the optical member such as the liquid crystal panel 211 on the chassis 215 is assembled to the frame body 223, the stage before the sandwiching portion 223a interferes with the liquid crystal panel 211, Since the restriction convex part (not shown) is fitted in the restriction concave part 234, the opening restriction of the pair of first extending parts 225 can be preceded, and the assembling workability can be further improved.

  It should be noted that an extension clamping portion 39 and an extension extending toward the frame body 223 along the Y-axis direction are provided at both ends in the extending direction of the clamping portion 224a and the side wall portion 224b of the connecting extension portion 224. A pair of side wall portions 40 are provided. The extended clamping part 39 and the extended side wall part 40 have substantially the same outer surface and inner surface as the outer surfaces and inner surfaces of the clamping part 223 a and the side wall part 223 c included in the pair of first extending parts 225. And the extension clamping part 39 can clamp the edge part by the side of the connection extension part 224 about the Y-axis direction in the edge part of a pair of short side side among the liquid crystal panels 211 between the chassis 215. Is done.

<Embodiment 4>
A fourth embodiment of the present invention will be described with reference to FIG. In this Embodiment 4, what changed the formation range of the control convex part 333 from above-mentioned Embodiment 1 is shown. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

  As shown in FIG. 12, a plurality of restriction convex portions 333 according to the present embodiment are provided in part at each end portion on the short side of the plate-like portion 315 a of the chassis 315. Specifically, the restriction convex portion 333 is an end portion on the opposite side to the substrate housing portion 315a2 side among the end portions on the short side of the plate-like portion 315a, that is, a front end portion in the insertion direction with respect to the frame body (not shown) Two each are provided at the center part in the extending direction (Y-axis direction) of the end part on the short side. Each regulating projection 333 has a plate-like shape extending along the Y-axis direction, but the forming range at the end on the short side of the plate-like portion 315a is such that each regulating projection 333 is formed. It is narrower than the non-formed part range. Even in such a configuration, the opening of the pair of first extending portions can be restricted in the initial stage of the assembly of the chassis 315 to the frame body, in the same manner as in the first embodiment. In the state in which the opening is completed, the central portion in the extending direction in which the opening is most feared can be restricted among the pair of first extending portions.

<Embodiment 5>
Embodiment 5 of the present invention will be described with reference to FIG. 13 or FIG. In the fifth embodiment, the arrangement of the restriction convex portion 433 is changed from the first embodiment described above. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

  As shown in FIG. 13, the restriction convex portion 433 according to the present embodiment is arranged on the center side from each end portion on the short side in the plate-like portion 415 a of the chassis 415. Specifically, the restriction convex portion 433 is formed by cutting and raising a portion on the center side in the X-axis direction from the end portion on the short side of the plate-like portion 415a toward the back side. For this reason, in the plate-like portion 415a, a partial notch 41 is formed at a location where the restricting convex portion 433 is formed. The restricting protrusions 433 are the same as the restricting protrusions 333 (see FIG. 12) described in the fourth embodiment in the arrangement and the number of installation in the Y-axis direction in the plate-like part 415a, and are shown in FIG. As described above, of the plate-like portion 415a, the end opposite to the substrate housing portion 415a2 side, that is, the front end portion in the insertion direction with respect to the frame body 423, and the extending direction of the first extending portion 425 (Y-axis direction) There are two each at the center of each. By limiting the formation range of the restricting convex portion 433 in this way, the formation range of the notch portion 41 is also limited, so that the mechanical strength of the plate-like portion 415a can be sufficiently maintained. Is done.

<Embodiment 6>
A sixth embodiment of the present invention will be described with reference to FIG. 15 or FIG. In the sixth embodiment, a method in which the formation method and the formation range of the restriction convex portion 533 are changed from the above-described fifth embodiment will be described. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 5 is abbreviate | omitted.

  As shown in FIG. 15, the restriction convex portion 533 according to the present embodiment knocks out the plate-like portion 515 a of the chassis 515 with the portion on the center side in the X-axis direction toward the back side from the end portion on the short side. It is formed by that. The restricting convex portion 533 includes a pair of projecting portions that project from the plate-like portion 515a toward the back side at a substantially right angle, and a connecting portion that connects the tip portions thereof, and has a substantially channel shape (substantially gate shape). Shape). Therefore, it is avoided that the notch 41 (see FIG. 13) as in the above-described fifth embodiment is formed in the plate-like portion 515a as the restricting convex portion 533 is formed. Thereby, the mechanical strength of the plate-like portion 515a can be kept higher. As shown in FIG. 16, the restricting convex portion 533 is formed in a shape extending along the extending direction of the first extending portion 525 of the frame main body 523 in the plate-like portion 515a, and the formation range thereof is It extends from the front end portion in the insertion direction to the frame body 523 to the center portion in the extending direction of the first extending portion 525.

<Embodiment 7>
A seventh embodiment of the present invention will be described with reference to FIG. 17 or FIG. In this Embodiment 7, what changed the cross-sectional shape and formation range of the control convex part 633 from above-mentioned Embodiment 6 is shown. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 6 is abbreviate | omitted.

  As shown in FIG. 17, the restriction convex portion 633 according to the present embodiment has an arc shape with rounded corners. This restriction convex part 633 is the same as the restriction convex part 333 (refer to Drawing 12) described in the above-mentioned Embodiment 4 in the arrangement and the number of installation about the Y-axis direction in plate-like part 615a of chassis 615. As shown in FIG. 18, the end in the extending direction (Y-axis direction) of the end on the side opposite to the substrate housing 615 a 2 side, that is, the front end in the insertion direction with respect to the frame main body (not shown) and the end on the short side. Two are provided for each part. The restricting convex portion 633 has an elongated oval shape along the Y-axis direction when seen in a plane.

<Eighth embodiment>
An eighth embodiment of the present invention will be described with reference to FIG. In the eighth embodiment, the concavo-convex relationship of the regulation structure 732 is reversed from the first embodiment described above. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

  As shown in FIG. 19, the restriction structure 732 according to the present embodiment has a plate-like shape of the chassis 715, whereas the restriction protrusions 42 are formed on the pair of first extending portions 725 included in the frame body 723. A restriction recess 43 that receives the restriction protrusion 42 is formed on the portion 715a side. The regulation convex part 42 is provided in the form which protrudes toward the front side from the surface of the front side which opposes the plate-shaped part 715a among the receiving parts 723b which a pair of 1st extension part 725 has. The restriction recess 43 is arranged at a position closer to the center in the X-axis direction than the pair of short-side ends of the plate-like portion 715a, and is formed to be recessed from the plate surface on the back side of the plate-like portion 715a to the front side. Has been. The restricting convex portion 42 and the restricting concave portion 43 are both formed so as to extend along the extending direction of the first extending portion 725.

<Ninth Embodiment>
Embodiment 9 of the present invention will be described with reference to FIG. In the ninth embodiment, the arrangement of the restricting convex portion 842 and the restricting concave portion 843 described in the eighth embodiment is changed. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 8 is abbreviate | omitted.

  As shown in FIG. 20, the restriction recesses 843 according to the present embodiment are arranged at both short side ends of the plate-like portion 815 a of the chassis 815. The restriction recess 843 is formed at the end on the short side of the plate-like portion 815a so as to open to the back side in the Z-axis direction and open to the outside in the X-axis direction. Accordingly, the restriction convex portion 842 is disposed near the end portion on the side wall portion 823c side of the receiving portion 823b included in the pair of first extending portions 825.

<Embodiment 10>
A tenth embodiment of the present invention will be described with reference to FIG. The tenth embodiment shows a configuration in which the liquid crystal panel 911 is not sandwiched between the frame 913 and the chassis 915 from the first embodiment. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

  As shown in FIG. 21, the liquid crystal display device 910 according to the present embodiment includes a second frame 44 for holding the outer peripheral end of the liquid crystal panel 911 between the holding portion 923 a of the frame 913. ing. The second frame 44 has a substantially frame shape surrounding the outer peripheral end portion of the liquid crystal panel 911 similarly to the frame 913, and is disposed on the front side with respect to the outer peripheral end portion of the liquid crystal panel 911, A second sandwiching portion 44a that sandwiches the outer peripheral end portion of the liquid crystal panel 911, and a second sidewall portion 44b that protrudes from the outer end portion of the second sandwiching portion 44a toward the back side. Accordingly, the frame 913 is a component part of the backlight device 912, and the reflection sheet 919 and the light guide plate 918 are stacked between the sandwiching portion 923 a of the frame 913 and the plate-like portion 915 a of the chassis 915. In addition, the optical sheet 920 is sandwiched. In particular, the sandwiching portion 923a supports the optical sheet 920 from the front side. Therefore, in this embodiment, when the backlight device 912 is assembled, the reflection sheet 919, the light guide plate 918, and the optical sheet 920, which are optical members of the backlight device 912, are stacked on the plate-like portion 915a of the chassis 915. And the laminated body can be inserted into the frame main body 923 constituting the frame 913 and assembled. Then, during the assembly operation of the backlight device 912 and in a state where the assembly has been completed, the opening of the pair of first extending portions 925 is restricted by the restriction convex portion 933 engaging with the restriction concave portion 934. Therefore, the optical sheet 920 is difficult to drop off.

<Embodiment 11>
An eleventh embodiment of the present invention will be described with reference to FIG. In the eleventh embodiment, an organic EL display device 45 including an organic EL panel 46 as a display panel is shown. In addition, the overlapping description about the same structure, an effect | action, and effect as above-mentioned Embodiment 1 is abbreviate | omitted.

  As shown in FIG. 22, the organic EL display device 45 includes an organic EL panel 46 that is a self-luminous display panel. For this reason, the organic EL display device 45 according to the present embodiment does not include an external light source (illumination device) like the backlight device 12 described in the first embodiment. The organic EL panel 46, which is an optical member capable of displaying an image, is sandwiched between the sandwiching portion 1023a of the frame 1013 and the plate-like portion 1015a of the chassis 1015. At the time of assembly, the organic EL panel 46 can be inserted into the frame main body 1023 forming the frame 1013 in a state where the organic EL panel 46 is placed on the plate-like portion 1015a of the chassis 1015. Then, during the assembling work of the organic EL display device 45 and in a state where the assembling is completed, the restriction convex portion 1033 is unevenly fitted to the restriction concave portion 1034, so that the opening of the pair of first extending portions 1025 is restricted. Therefore, the organic EL panel 46 is difficult to drop off.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In each of the above-described embodiments, the case where the assembly is performed by inserting the laminated body formed by laminating the optical member on the chassis with respect to the frame body is illustrated. Assembly may be performed by moving the frame body relative to the body.

  (2) In addition to the above-described embodiments, for example, with a regulation recess (regulation projection) formed in one of the pair of first extending portions and a regulation recess (regulation projection) formed in the other, At least one of the planar arrangement, the number of installations, the formation range in the Y-axis direction (the extending direction of the first extending portion), and the cross-sectional shape can be made different. The pair of regulating protrusions (regulating depressions) formed on the chassis can be similarly changed.

  (3) In each of the above-described embodiments (except for the eighth and ninth embodiments), the case where the regulating recess formed in each first extending portion of the frame body is formed over the entire length of each first extending portion is shown. However, the present invention includes a configuration in which the restricting concave portion is formed only in a part of each first extending portion.

  (4) In addition to the above-described embodiments, the specific planar arrangement of the restricting convex portions and restricting concave portions, the number of installation, the forming range in the Y-axis direction (extending direction of the first extending portion), the cross-sectional shape, etc. Can be appropriately changed.

  (5) In Embodiment 2 described above, the guide surface on the frame side can be omitted.

  (6) The technical matters described in the above embodiments can be appropriately combined. In that case, it is possible to provide a plurality of sets of regulating projections and regulating recesses having different plane arrangement, number of installations, formation range in the Y-axis direction (extending direction of the first extending portion), cross-sectional shape, and the like.

  (7) In each of the above-described embodiments, the case where the frame body is manufactured by bending the base material formed by extrusion molding is shown. However, the specific method for manufacturing the frame body is appropriately determined. It is possible to change. For example, manufacturing the frame main body by separately manufacturing each of the first extending portion and the second extending portion, and connecting the extending portions to each other using a technique such as welding or screwing. Is also possible. In that case, the restriction recess can be omitted from the second extending portion.

  (8) In each of the above-described embodiments, the case where the restricting structure is arranged so as to overlap with the optical member when seen in a plane is shown. However, the restricting structure does not overlap with the optical member when seen in a plane, and On the other hand, it is also possible to adopt a configuration arranged on the outside.

  (9) In the above-described embodiments, the frame is made of metal, but the frame can be made of synthetic resin. In addition, the chassis, the back cabinet, and the like can be made of synthetic resin.

  (10) In the above-described eleventh embodiment, the organic EL display device including the organic EL panel as the self-luminous display panel is illustrated. However, for example, a plasma display panel is provided as the self-luminous display panel. The present invention is also applicable to plasma display devices.

  (11) In each of the above-described embodiments (except for the eleventh embodiment), an arrangement in which one end surface on the long side of the outer peripheral end surface of the light guide plate is a light incident surface facing the LED is shown. The present invention includes an LED and an LED substrate arranged so that one end surface on the short side of the light plate is a light incident surface. In addition, the LED and the LED substrate may be arranged such that both long-side end surfaces or short-side end surfaces of the light guide plate are light incident surfaces. Furthermore, you may arrange | position LED and an LED board so that arbitrary three end surfaces in a light-guide plate or all four end surfaces may become a light-incidence surface.

  (12) In each of the above-described embodiments (except for the eleventh embodiment), a transmissive liquid crystal display device including a backlight device that is an external light source has been exemplified. However, the present invention uses light from the backlight device. Thus, the present invention can be applied to a transflective liquid crystal display device having both functions of a transmissive display that performs display and a reflective display that performs display using external light.

  (13) In each of the above-described embodiments (except for the eleventh embodiment), the colored portion of the color filter included in the liquid crystal panel is exemplified as three colors of R, G, and B. However, the colored portion has four or more colors. It is also possible to do.

  (14) In each of the above-described embodiments (except for the eleventh embodiment), a TFT is used as a switching element of a liquid crystal display device. However, a liquid crystal display device using a switching element other than a TFT (for example, a thin film diode (TFD)) is used. In addition to a liquid crystal display device that performs color display, the present invention can also be applied to a liquid crystal display device that performs monochrome display.

  (15) In each of the above-described embodiments, the case where the liquid crystal display device or the organic EL display device has a horizontally long rectangular shape has been shown, but a vertically long rectangular shape or a square shape is also included in the present invention. .

  DESCRIPTION OF SYMBOLS 10,910 ... Liquid crystal display device (display device), 11, 211,911 ... Liquid crystal panel (optical member, display panel), 12,912 ... Backlight device (illumination device), 13, 913, 1013 ... Frame, 15, 115, 215, 315, 415, 515, 615, 715, 815, 915, 1015 ... chassis, 15a, 115a, 315a, 415a, 515a, 615a, 715a, 815a, 915a, 1015a ... plate-like part, 16 ... LED ( Light source), 18, 918 ... Light guide plate (optical member), 19, 919 ... Reflective sheet (optical member), 20, 920 ... Optical sheet (optical member), 23, 223, 423, 523, 723, 923, 1023 ... Frame main body, 23a, 223a, 923a, 1023a ... clamping part, 23b, 223b, 723b, 923 ... receiving part, 23d ... opening, 24, 224 ... connection extension part, 25, 225, 425, 525, 725, 825, 925, 1025 ... first extension part, 26, 226 ... second extension part, 32,732 ... restriction structure, 33, 133, 333, 433, 533, 633, 933, 1033 ... restriction protrusion, 33a ... inner plate surface (inner facing surface), 33b ... outer plate surface (outer facing) Surface), 34, 234, 934, 1034 ... regulating recess, 34a ... inner facing surface, 34b ... outer facing surface, 35 ... guide surface, 36 ... positioning portion, 38 ... convex side guide surface (guide surface), 42, 842 ... restriction convex part, 43, 843 ... restriction concave part, 45 ... organic EL display device (display device), 46 ... organic EL panel (optical member, display panel), LH ... optical member holding structure, TV ... television reception apparatus

Claims (14)

An optical member having a rectangular plate shape;
A chassis having a plate-like portion along the plate surface of the optical member;
A frame that has a frame shape following the outer peripheral end portion of the optical member, and that sandwiches the outer peripheral end portion of the optical member with the plate-like portion of the chassis, the outer peripheral end portion of the optical member And a pair of first extending portions extending along a pair of side portions that form opposite sides of the three side portions included in the first side, and the end portions on the same side of the pair of first extending portions and A frame main body comprising a second extending portion extending along a side portion sandwiched between the pair of side portions of the three side portions of the optical member, and an outer peripheral end portion of the optical member. A frame having a connection extending portion extending along the remaining side portions excluding the three side portions and connected to the pair of first extension portions forming the frame body;
A restricting structure that is provided on each of the pair of first extending portions and the chassis forming the frame main body and restricts relative displacement so that the pair of first extending portions are opened by being engaged with each other. , equipped with a,
The restricting structure is an optical member holding structure disposed at a position overlapping the optical member.   The restricting structure is formed on the plate-like portion of the chassis and is formed on a restricting convex portion protruding to the opposite side to the optical member side, and the pair of first extending portions forming the frame body. The optical member holding structure according to claim 1, further comprising a restriction concave portion that receives the restriction convex portion.   The optical member holding structure according to claim 1, wherein the restriction convex portion is disposed at an end portion of the plate-like portion of the chassis. The frame body includes a clamping portion that clamps the optical member with the plate-like portion of the chassis, and a receiving portion that can receive the plate-like portion of the chassis from a side opposite to the optical member side. And between the ends of the pair of first extending portions opposite to the second extending portion side, and extending the optical member and the chassis along the extending direction of the first extending portion. Having an opening that can be inserted between the sandwiching part and the receiving part,
2. The restriction structure is disposed at least at an end portion of the pair of first extending portions on the opening side and a front end portion of the chassis in the insertion direction with respect to the pair of first extending portions. The optical member holding structure according to claim 3. The restriction structure is formed on one side of the pair of first extending portions and the chassis, and formed on the other side, and the chassis is inserted into the opening. It is comprised from the control recessed part which receives the above-mentioned control convex part,
The optical member holding structure according to claim 4, wherein a guide surface that guides the introduction of the other side is formed at an end of the side where the other side is introduced in at least one of the regulation convex part and the regulation concave part. .   The restriction structure is arranged at least in a central portion in the extending direction of the pair of first extending portions and a central portion in the extending direction of the pair of first extending portions in the chassis. The optical member holding structure according to any one of claims 1 to 5. The restriction structure includes a restriction convex portion formed on one side of the pair of first extending portions and the chassis, and a restriction concave portion formed on the other side and receiving the restriction convex portion. And
The opposing surfaces of the restricting convex portion and the restricting concave portion are arranged such that the inner opposing surfaces are in contact with each other while the outer opposing surfaces are spaced apart from each other. The optical member holding structure according to any one of the above.   An illumination device comprising: the optical member holding structure according to any one of claims 1 to 7; and a light source that is housed in the chassis and supplies light to the optical member. The optical member includes at least a light guide plate that guides light from the light source,
The lighting device according to claim 8, wherein the light source is selectively arranged at a position overlapping at least one of the second extension part and the connection extension part in the chassis.   The lighting device according to claim 9, wherein the chassis is provided with a positioning portion that positions the light guide plate with respect to the light source in an extending direction of the pair of first extending portions.   The lighting device according to claim 9 or 10, wherein the light source is selectively arranged at a position overlapping the connection extension portion in the chassis.   A display device comprising: the optical member holding structure according to claim 1; and a display panel included at least in the optical member. An illumination device comprising at least a light source housed in the chassis and a light guide plate that is at least included in the optical member and guides light from the light source;
The display device according to claim 12, wherein outer peripheral ends of the display panel and the light guide plate are sandwiched between the chassis and the frame.   A television receiver comprising the display device according to claim 12 or 13.

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