WO2012176699A1 - Light source module, illuminating apparatus, display apparatus, and television receiver - Google Patents

Abstract

A light source module (3) of the present invention is provided with: a plurality of light sources (4); a light source base material (5), which has a light source-mounted surface (51) having the light sources (4) mounted thereon, and adjacent surfaces (52, 53), which are surfaces different from the light source-mounted surface (51), and are adjacent to the light source-mounted surface (51); and a wiring pattern (6), which electrically connects the light sources (4) to each other, supplies power to each of the light sources (4), and has at least a part of the wiring pattern (6) formed on the adjacent surfaces (52, 53). Consequently, the longitudinal width of the surface having the light sources (4) mounted thereon can be set small.

Description

Light source module, illumination device, display device, and television receiver

The present invention relates to a light source module, a lighting device, a display device, and a television receiver.

In recent years, liquid crystal panels have been widely used as display units for televisions, mobile phones, portable information terminals and the like. Since the liquid crystal panel cannot emit light by itself, the light of an illumination device (so-called backlight device) is used to display an image. This illuminating device is arranged on the back side of the liquid crystal panel, and is configured to irradiate light spreading in a plane toward the back side of the liquid crystal panel.

As the illuminating device, as shown in Patent Document 1, a device including a light guide plate and a light source disposed so as to face an end surface of the light guide plate is known. This type of lighting device is generally known as a side light type (or edge light type), and in recent years, an LED (Light Emitting Diode) light source is used as a light source. As shown in Patent Document 1, the LED light source is mounted on a plate-shaped LED substrate (printed substrate). A wiring pattern made of copper foil or the like for supplying power to the LED light source is also formed on the plate surface (mounting surface) of the LED substrate on which the LED substrate is mounted.

The LED substrate, the light guide plate and the like are accommodated in a box-shaped accommodation member (housing). As shown in Patent Document 1, the LED substrate is accommodated in an upright state in the accommodating member such that its mounting surface faces the end surface of the light guide plate.

JP 2010-72261 A

(Problems to be solved by the invention)
When all the wiring patterns are formed on the plate surface of the LED substrate on which the LED light source is mounted, the vertical width of the plate surface of the LED substrate is increased. When the vertical width of the plate surface of the LED substrate is large, the width in the thickness direction of the entire lighting device also becomes large, which is a problem.

An object of the present invention is to provide a light source module capable of setting a vertical width of a mounting surface on which a light source is mounted to be small, and to provide an illumination device including the light source module. *

(Means for solving problems)
The light source module according to the present invention includes a plurality of light sources, a light source mounting surface on which the plurality of light sources are mounted, and one or two adjacent surfaces that are different from the light source mounting surface and are adjacent to the light source mounting surface. A light source substrate having a surface, a wiring pattern that electrically connects the plurality of light sources to each other and supplies power to each light source, and at least a part of the wiring pattern formed on the adjacent surface; Is provided. In the light source module, the vertical width of the light source mounting surface can be set smaller than when the wiring patterns are collectively mounted on the surface on which the light source is mounted. Therefore, it becomes possible to reduce the thickness of the entire light source module.

In the light source module, the light source substrate includes a plate-shaped mounting portion including the light source mounting surface, and one or two plate-shaped adjacent portions adjacent to the mounting portion and including the adjacent surface. The sheet base material may be formed by being bent.

In the light source module, the light source base material may be formed by bending the raw base material after the wiring pattern is formed on the surface of the raw base material.

In the light source module, the light source substrate may have a flat surface on the light source mounting surface and a curved surface on the adjacent surface.

In the light source module, the adjacent surface may have a cylindrical surface shape whose cross-sectional shape is an arc shape, or an elliptic cylinder surface shape whose cross-sectional shape is an elliptical arc shape.

In the light source module, the light source base material has a triangular prism shape having a triangular cross section, the light source mounting surface is a flat surface shape, two adjacent surfaces are adjacent to each other, and each is a flat surface shape It may be.

In the light source module, the light source base has a quadrangular prism shape with a quadrangular cross section, the light source mounting surface is a flat surface, and the two adjacent surfaces are each a flat surface and are parallel to each other. May be arranged.

In the light source module, the light source base material has a trapezoidal column shape with a trapezoidal cross section, the light source mounting surface is a flat surface shape, and the two adjacent surfaces are each a flat surface shape and extend to each other. May be arranged.

In the light source module, the light source substrate has a convex column shape having a convex cross section, and the light source mounting surface is a flat surface shape and is arranged on the top surface of the convex column shape. The surface may be a bent surface shape that is bent in steps.

In the light source module, the wiring pattern may be a printed wiring.

In the light source module, the light source may be an LED light source.

In the light source module, a width of the light source mounting surface may be set narrower than a width of the adjacent surface.

In the light source module, the light source base material may include a base material portion made of copper.

In the light source module, the light source base material may include a base material portion made of aluminum.

In the light source module, the light source base material may have a heat radiating portion.

In the light source module, the light source base material may be fixed to a heat radiating member.

The lighting device according to the present invention includes the light source module.

A display device according to the present invention includes the illumination device and a display panel that performs display using light from the illumination device.

In the display device, the display panel may be a liquid crystal panel using liquid crystal.

A television receiver according to the present invention includes the display device.

(The invention's effect)
ADVANTAGE OF THE INVENTION According to this invention, the light source module which can set the vertical width of the mounting surface in which a light source is mounted small can be provided. Moreover, according to this invention, an illuminating device etc. provided with the said light source module can be provided.

1 is an exploded perspective view showing a schematic configuration of a television receiver according to Embodiment 1 of the present invention. Exploded perspective view showing schematic configuration of liquid crystal display device Perspective view of light source module Side view of light source module Explanatory drawing showing the mounting surface and adjacent surface virtually on the same plane The perspective view of the light source module of Embodiment 2. Plan view of flat LED base material on which LED light source and wiring pattern are formed on the surface Explanatory drawing schematically showing the process of bending the LED base material into a predetermined shape The perspective view of the light source module of Embodiment 3. The perspective view of the light source module of Embodiment 4. Side view of light source module of Embodiment 5 Side view of light source module of Embodiment 6 Side view of light source module of Embodiment 7 Side view of light source module of embodiment 8 Side view of light source module of embodiment 9 Side view of light source module of embodiment 10 The side view of the light source module of Embodiment 11 Side view of light source module fixed to heat dissipation member

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 5. In the present embodiment, the light source module 3, the illumination device 12 including the light source module 3, the liquid crystal display device 10 including the illumination device 12, and the television receiver TV including the liquid crystal display device 10 are illustrated. In each figure, an X axis, a Y axis, and a Z axis are shown. The upper side shown in FIG. 2 is the front side, and the lower side is the back side.

FIG. 1 is an exploded perspective view showing a schematic configuration of the television receiver TV according to the first embodiment. As shown in FIG. 1, the television receiver TV of the present embodiment mainly includes a liquid crystal display device (display device) 10, front and back cabinets Ca and Cb that are stored so as to sandwich the liquid crystal display device 10, and a power source P. And a tuner T and a stand S. The liquid crystal display device 10 is supported by the stand S so that its display surface is along the vertical direction (Y direction).

FIG. 2 is an exploded perspective view showing a schematic configuration of the liquid crystal display device 10. As shown in FIG. 2, the liquid crystal display device 10 has a horizontally long rectangular shape when viewed from the front side, and includes a liquid crystal panel (display panel) 11 and a back surface 11 b side of the liquid crystal panel 11. And a frame-shaped bezel 13 that covers the front side (display surface 11a side) of the liquid crystal panel 11. These are integrally held by attaching the bezel 13 or the like to the lighting device 12. The bezel 13 is made of a metal material or the like.

As shown in FIG. 2, the liquid crystal panel 11 has a horizontally long rectangular shape when viewed from the front side. The liquid crystal panel 11 mainly includes a pair of transparent glass substrates facing each other and a liquid crystal layer sealed between these substrates. Among these substrates, one glass substrate disposed on the back surface 11b side (back side) is a so-called thin film transistor (hereinafter, TFT) array substrate, and the other glass substrate disposed on the display surface 11a side (front side). Is a so-called color filter (hereinafter referred to as CF) substrate.

The TFT array substrate is mainly composed of a plurality of TFTs as switching elements and a plurality of transparent pixel electrodes connected to the drain electrodes of each TFT in a matrix (matrix) on a transparent glass plate. It consists of what is provided. Individual TFTs and pixel electrodes are provided for each pixel, and are partitioned by a plurality of gate wirings and a plurality of source wirings provided on the glass plate so as to cross each other. . Note that the gate electrode in each TFT is connected to the gate wiring, and the source electrodes thereof are connected to the source wiring.

The CF substrate is mainly formed on a transparent glass plate so that the CF composed of each color such as red (R), green (G), and blue (B) corresponds to each pixel of the TFT array substrate. It consists of what was provided in matrix form. Each CF is partitioned by a light-shielding black matrix (BM) provided in a lattice pattern on the glass plate. A transparent counter electrode or the like facing the pixel electrode of the TFT array substrate is provided on the CF and the BM.

The liquid crystal panel 11 is configured to supply image data and various control signals necessary for displaying an image from the drive circuit substrate to the above-described source wiring, gate wiring, counter electrode, and the like. Drives in a matrix system. The liquid crystal panel 11 is provided with polarizing plates on the display surface 11a side and the back surface 11b side so as to sandwich the pair of glass substrates.

The illuminating device 12 is a so-called edge light type (side light type), and mainly includes the light source module 3, a chassis (accommodating member) 14, an optical sheet 15, a light guide plate 19, a reflection sheet 20, and a frame 21. And.

The chassis 14 is formed of a shallow box having an upper opening, and is formed by pressing a plate material made of a metal material such as an aluminum material. The chassis 14 has a bottom plate 14a that is horizontally long when viewed from the front side, a pair of walls 14c that are erected on the short side edge of the bottom plate 14a, and a long side of the bottom plate 14a. And a pair of walls 14d that are erected on the edges.

The reflective sheet 20 has a horizontally long rectangular shape when viewed from the front side, and is made of a white foamed plastic sheet (for example, a foamed polyethylene terephthalate sheet). The reflection sheet 20 is accommodated in the box-shaped chassis 14 so as to cover the surface of the bottom plate 14a.

FIG. 3 is a perspective view of the light source module 3, and FIG. 4 is a side view of the light source module 3. As shown in FIG. 3, the light source module 3 mainly includes a plurality of LED light sources (light sources) 4 and an LED base material (light source base material) 5 on which a wiring pattern 6 is formed.

The LED light source (light source) 4 is composed of a plurality of LED chips, which are light emitting elements, sealed in a housing with a resin material or the like (so-called LED package), and is configured to emit white light. For example, the LED light source 4 includes three types of LED chips having different main emission wavelengths. Specifically, each LED chip has red (R), green (G), and blue (B). It is configured to emit monochromatic light. In addition, as the LED light source 4, it is not restricted to such a structure, Another structure may be sufficient. Other configurations of the LED light source 4 include, for example, a built-in LED chip that emits blue (B) in a single color, a phosphor having an emission peak in the red (R) region, and an emission peak in the green (G) region. The LED chip may be covered with a resin (for example, a silicon-based resin) mixed with a phosphor having the above. Further, as another configuration, a resin (for example, a silicon-based resin) in which an LED chip that emits blue (B) in a single color is incorporated and a phosphor that emits yellow light such as YAG (yttrium, aluminum, garnet) phosphor is mixed. ), The LED chip may be covered.

As shown in FIGS. 2 to 43, the LED base material (light source base material) 5 has a plate shape (a cross-sectional shape is a flat quadrangular shape) extending along the long side direction (X-axis direction) of the chassis 14. It has a quadrangular prism shape. As shown in FIG. 3, the LED base 5 includes a front end face 51, a rear end face 54 arranged in parallel to the end face 51, a plate face 52 arranged on the upper side, and a plate thereof. A lower plate surface 53 disposed in parallel with the surface 52, a side surface 55 disposed on the right side, and a left side surface 56 disposed in parallel with the side surface 55 are provided.

The end face 51 has a rectangular shape that is elongated along the longitudinal direction (X-axis direction) of the LED base 5. On the end surface 51, a plurality of LED light sources 4 are surface-mounted in a line along the longitudinal direction. The LED light sources 4 are arranged at a predetermined interval from each other. The external shape of the LED light source 4 mounted on the end surface 51 is a substantially rectangular parallelepiped. The horizontal width (width in the X-axis direction) of the LED light source 4 is longer than the vertical width (width in the Z-axis direction). On the back side of each LED light source 4, an anode side (+ side) terminal (not shown) and a cathode side (− side) terminal (not shown) are provided. A terminal on the anode side of the LED light source 4 is arranged on the plate surface 52 side, and a terminal on the cathode side is arranged on the plate surface 53 side. The vertical width of the end surface 51 (the width of the LED base 5 in the short direction) is set to be substantially the same as the vertical width of the LED light source 4. In the case of this embodiment, the end surface 51 is the light source mounting surface 51. The plate surface 52 is one adjacent surface 52, and the plate surface 53 is the other adjacent surface 53. The adjacent surfaces 52 and 53 are arranged in parallel to each other.

The LED light sources 4 mounted on the end face 51 are electrically connected to each other by a wiring pattern 6. Each LED light source 4 is connected in parallel by a wiring pattern 6. The wiring pattern 6 is mainly formed on two plate surfaces 52 and 53 adjacent to the end surface 51.

The plate surface 52 has a rectangular shape extending along the longitudinal direction (X-axis direction) of the LED base material 5. The vertical width of the end surface 52 (width in the short direction of the LED base material 5) is the end surface 51. It is set larger than the vertical width of. That is, the area of the plate surface 52 is wider than the area of the end surface 51. The plate surface 53 has the same shape as the plate surface 52. FIG. 5 is an explanatory diagram showing the mounting surface 51 and the adjacent surfaces 52 and 53 virtually on the same plane.

On the plate surface 52, as a wiring pattern 6, one wiring part 61 (VCC pattern) arranged straight along the longitudinal direction of the LED base 5 and a branch from this wiring part 61, A plurality of branch wiring portions 62 connected to the anode side terminal provided in the LED light source 4 are formed. One end of the branch wiring part 62 is connected to a terminal on the anode side of the LED light source 4. Further, on the plate surface 53, as a wiring pattern 6, one wiring part 64 (GND pattern) arranged straight along the longitudinal direction of the LED base 5 and a branch from the wiring part 64. A plurality of branch wiring parts 63 connected to the cathode side terminals provided in each LED light source 4 are formed. One end of the branch wiring portion 63 is connected to the cathode side terminal of the LED light source 4. The wiring pattern 6 is connected to an external drive control circuit (not shown) that supplies power and control signals necessary for lighting each LED light source 4.

The LED base 5 is mainly formed on a plate-like base part made of a metal material such as an aluminum-based material, an insulating layer made of a synthetic resin formed on the base part, and the insulating layer. A wiring pattern 6 made of a metal film such as copper foil and a reflective layer made of a white insulating film formed on the insulating layer so as to cover the wiring pattern 6 are provided. For convenience of explanation, the reflection layer covering the wiring pattern 6 is omitted in each drawing. Moreover, in each figure, the said base material part and the said insulating layer are shown integrally.

The light source module 3 is arranged in the chassis 14 along the long side wall 14d. The light source module 3 is arranged in the chassis 14 so that the end surface 54 of the LED base 5 faces the wall 14d and the plate surface 53 faces the floor plate 14a. The light source module 3 is fixed to the wall 14d and the bottom plate 14a using fixing means (not shown) such as screws. The light source module 3 is arranged so that the end surface (light source mounting surface) 51 of the LED base 5 faces the end surface 19 d of the light guide plate 19.

As shown in FIG. 2, the light guide plate 19 is a horizontally long rectangular shape in a plan view and is made of a plate-like member having a predetermined thickness, like the liquid crystal panel 11 and the chassis 14. The light guide plate 19 is manufactured from a synthetic resin material having a refractive index higher than air and substantially transparent (for example, an acrylic resin such as PMMA or polycarbonate). The light guide plate 19 has a front-side plate surface (front surface) 19a, a back-side plate surface (back surface) 19b, two end surfaces 19c on the short side, and two end surfaces 19d on the long side. The light guide plate 19 is accommodated in the chassis 14 so that the back surface 19b of the light guide plate 19 faces the bottom plate 14a with the reflection sheet 20 in between. A plurality of locking pins (not shown) are erected on the bottom plate 14a. The locking pins are inserted into the light guide plate 19 from the back plate surface 19b, so that the light guide plate 19 is placed in the chassis 14. It is positioned.

The end face 19d of the light guide plate 19 faces the LED light source 4 with a predetermined interval. The end surface 19d is a light incident surface on which light emitted from the LED light source 4 is incident. The front surface 19a of the light guide plate 19 is a light exit surface, and the light incident on the end surface (light incident surface) 19d is incident on the optical sheet 15 and the liquid crystal disposed above the light guide plate 19. The light is emitted toward the panel 11. A plate surface 19 b on the back side of the light guide plate 19 is covered with a reflection sheet 20. The reflection sheet 20 reflects light incident on the inside of the light guide plate 19 from the end surface (light incident surface) 19d and rises toward the front plate surface (light emitting surface) 19a.

In addition, on the front plate surface (light emitting surface) 19a or the back plate surface 19b of the light guide plate 19, a reflection portion that reflects light in the light guide plate 19 or a scattering portion that scatters has a predetermined in-plane distribution. Thus, the light emitted from the plate surface (light emitting surface) 19a is adjusted so as to have a uniform distribution in the surface.

As shown in FIG. 2, the optical sheet 15 has a horizontally long rectangular shape when viewed from the front side, like the liquid crystal panel 11 and the like. The optical sheet 15 includes a laminate of a diffusion sheet 15a, a lens sheet 15b, and a reflective polarizing sheet 15c. The optical sheet 15 is placed on the plate surface 19 a so as to cover the front plate surface (light emitting surface) 19 a of the light guide plate 19. The size of the optical sheet 15 is set to be approximately the same as the size of the plate surface 19 a of the light guide plate 19.

The frame 21 is a frame-like (frame-like) member along the periphery of the liquid crystal panel 11 and the light guide plate 19 and is made of synthetic resin or the like. The frame 21 is black and has a light shielding property. The frame 21 presses the end of the light guide plate 19 from the front side over substantially the entire circumference. The frame 21 is covered from the upper end side of each wall 14c, 14d of the chassis 14 housing the light guide plate 19 and the like. The frame 21 is fixed to the walls 14c and 14d of the chassis 14 by fixing means (not shown) such as screws. Note that the periphery of the liquid crystal panel 11 is placed on the inner edge of the frame 21.

The liquid crystal panel 11 is attached to the chassis 14 with its peripheral edge sandwiched between the frame 21 and the above-described bezel 13 covered from the front side of the frame 21. The bezel 13 is fixed to the walls 14c and 14d of the chassis 14 together with the frame 21 and the like by fixing means (not shown) such as screws.

When the liquid crystal display device 10 displays an image on the display surface 11a of the liquid crystal panel 11, each LED light source 4 of the light source module 3 included in the illumination device 12 emits light (lights up). When each LED light source 4 emits light, light enters the light guide plate 19 from the end surface (light incident surface) 19 d of the light guide plate 19. The incident light is reflected by the reflecting sheet 20 laid on the back side of the light guide plate 19, the reflecting portion formed on the back surface 19 b or the front surface 19 a of the light guide plate 19, and the like while traveling through the light guide plate 19. The light is emitted from the front side plate surface (light emitting surface) 19a. The light emitted from the plate surface 19a passes through the optical sheet 15 and spreads into a planar shape, and illuminates the liquid crystal panel 11 from the back surface 11b. The liquid crystal panel 11 displays an image on the display surface 11a using the light from the illumination device 12.

Here, the light source module 3 of the present embodiment will be further described. As shown in FIG. 3 and the like, the light source module 3 has a small thickness (width in the Z-axis direction). The LED base material 5 provided in the light source module 3 has a flat plate shape, and a plurality of LED light sources 4 are mounted on an end face 51 that is elongated along the longitudinal direction of the LED base material 5. The wiring patterns 6 are formed on the flat plate surface 52 and the flat plate surface 53 adjacent to the end surface 51, respectively. The wiring pattern 6 is formed of a so-called printed wiring formed using a printed wiring technique.

As shown in FIG. 5, only the LED light source 4 is mounted on the end surface (light source mounting surface) 51. The wiring pattern 6 is allocated on each of the two plate surfaces 52 and 53 adjacent to the end surface 51. In this way, the wiring pattern 6 is not formed on the same end surface 51 as the LED light source 4 but is formed on the other surfaces (the plate surface 52 and the plate surface 53) adjacent to the end surface 51, thereby the end surface 51. It is possible to set the size (particularly the vertical width) of the image to be small (narrow). Specifically, as shown in FIG. 5, the size of the end face 51 can be set smaller than the range 60 in which the wiring pattern 6 is formed.

Thus, the place where the wiring pattern 6 is formed is not the end surface (light source mounting surface) 51 on which the LED light source 4 is mounted, but the plate surface (adjacent surface) 52 and the plate surface (adjacent surface) adjacent to the end surface 51. By assigning to 53, the vertical width of the end face 51 can be set small. Therefore, the thickness of the LED base 5 is reduced, and the thickness of the entire light source module 3 is also reduced. The light source module 3 of this embodiment is suitably used in the lighting device 12 or the like where the light guide plate 19 is thin.

Further, the illumination device 12, the liquid crystal display device 10, and the television receiver TV each having the configuration in which the light source module 3 is mounted can be made thinner (thinner).

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIGS. In the following embodiments, the same parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted. Further, when the description of the action / effect is also repeated, it may be omitted as appropriate. In this embodiment, the light source module 3A is illustrated.

FIG. 6 is a perspective view of the light source module 3A of the second embodiment. Similar to the first embodiment, the light source module 3A includes a plurality of LED light sources 4 and an LED base 5A on which a wiring pattern 6 is formed. However, the configuration of the LED base 5A provided in the light source module 3A of the present embodiment is different from that of the first embodiment. The LED base material 5A of the present embodiment is formed by bending a flat base material into a predetermined shape.

FIG. 7 is a plan view of a flat LED base material 5A on which the LED light source 4 and the wiring pattern 6 are formed. As shown in FIG. 7, the LED base material 5 </ b> A has a single flat plate shape before processing. In addition, the flat LED base material 5A may be particularly referred to as an original base material. In this flat plate state, the LED base material 5A has the wiring pattern 6 formed on the surface thereof and the LED light sources 4 mounted thereon. The LED base material 5A is formed on a thin plate-like base material portion made of a metal material such as an aluminum material, an insulating layer made of a synthetic resin formed on the base material portion, and the insulating layer. A wiring pattern 6 made of a metal film such as copper foil, and a reflective layer made of a white insulating film formed on the insulating layer so as to cover the wiring pattern 6. For convenience of explanation, the reflection layer covering the wiring pattern 6 is omitted in each drawing. Moreover, in each figure, the said base material part and the said insulating layer are shown integrally.

The LED base 5A of the present embodiment is bent along the boundary line L1 and the boundary line L2 shown in FIG. Each boundary line L1, L2 is arranged in parallel with each other along the longitudinal direction of the LED base 5A. A portion sandwiched between the boundary lines L1 and L2 is a mounting portion 511 including a light source mounting surface 51A shown in FIG. 6, and the LED light source 4 is mounted on this portion. A part of the wiring pattern 6 (branch wiring parts 62 and 63) is also formed in a part sandwiched between the boundary lines L1 and L2.

Further, the part outside the boundary line L1 (upper side in FIG. 7) is an adjacent part 521 including the adjacent surface 52A shown in FIG. 6, and a part of the wiring pattern 6 (the wiring part 61 and the branch wiring part) is included in this part. 62) is formed. Further, the portion outside (lower side in FIG. 7) from the boundary line L2 is an adjacent portion 531 including the adjacent surface 53A shown in FIG. 6, and a part of the wiring pattern 6 (the wiring portion 64 and the branch wiring) is included in this portion. 63) is formed.

FIG. 8 is an explanatory view schematically showing a process of bending the LED base 5A into a predetermined shape. As shown in FIG. 8, the adjacent portion 521 and the adjacent portion 531 are each bent at a substantially right angle with respect to the flat mounting portion 511 so as to approach each other. The adjacent portion 521 and the adjacent portion 531 in a bent state are arranged in parallel to each other. That is, the front-side plate surface 52A of the adjacent portion 521 and the front-side plate surface 53A of the adjacent portion 531 are arranged in parallel to each other.

Note that the boundary portion between the mounting portion 511 and the adjacent portion 521 is gently bent as shown in FIG. 8, and the surface thereof is curved. When the boundary portion is gently bent in this way, the wiring pattern 6 (branch wiring portion 62) formed on the surface is difficult to break. Similarly, the boundary portion between the mounting portion 511 and the adjacent portion 531 is also gently bent, and the wiring pattern (branch wiring 63) is difficult to break.

As described above, the light source module 3A according to the present embodiment assigns the portion where the wiring pattern 6 is formed mainly to the plate surface (adjacent surface) 52A and the plate surface (adjacent surface) 53A, whereby the end surface (light source mounting surface). The vertical width of 51A can be set small. Therefore, also in the present embodiment, the thickness (width from the plate surface 52A to the plate surface 53A) of the LED substrate 5 in the bent state is reduced (small), and the thickness of the entire light source module 3A is also reduced.

In particular, in the light source module 3A of the present embodiment, the wiring pattern 6 is easily formed on each surface (the light source mounting surface 51A, the adjacent surface 52A, and the adjacent surface 53A) of the LED base 5A using a printed wiring technique. . The LED base 5A is in the form of a single flat plate before being bent as described above, and the wiring pattern 6 can be formed on each surface collectively. Further, the light source module 3A of the present embodiment is excellent in heat dissipation because the inside of the LED base 5A is hollow and has a large contact area with air. Furthermore, the light source module 3A of the present embodiment is lighter than that of the first embodiment and the like because the inside of the LED base 5A is hollow. The light source module 3 </ b> A of the present embodiment is also applicable to the lighting device 12 as in the first embodiment.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. In this embodiment, the light source module 3B is illustrated. FIG. 9 is a perspective view of the light source module 3B of the third embodiment. Similar to the first embodiment, the light source module 3B includes a plurality of LED light sources 4 and an LED base 5B on which a wiring pattern 6 is formed. Moreover, the external appearance shape of LED base material 5B is substantially the same as that of Embodiment 1, and has comprised the plate shape (flat is prismatic shape) extended along one direction (X-axis direction). The LED base 5B has an end surface (light source mounting surface) 51B on which the LED light source 4 is mounted, an end surface 54B arranged in parallel to the end surface 51, and a plate surface on which a part of the wiring pattern 6 is formed. (Adjacent surface) 52B, a plate surface (adjacent surface) 53B on which a part of the wiring pattern 6 is formed, and a side surface 53B disposed in parallel with each other. Side surface 56B.

However, the end surface 51B of the LED base 5B of the present embodiment is set to have a larger (wider) vertical width than that of the first embodiment, and a part of the wiring pattern 6 (branch wiring portion 62) is formed on the end surface 51B. , 63). Similarly, the end face 54B is set to have a larger (wider) vertical width than that of the first embodiment.

Thus, a part of the wiring pattern 6 may be formed on the end surface (light source mounting surface) 51 of the LED base 5B on which the LED light source 4 is mounted. In the light source module 3B of the present embodiment, the portion where the wiring pattern 6 is formed is mainly assigned to the plate surface (adjacent surface) 52B and the plate surface (adjacent surface) 53B, whereby the vertical width of the end surface (light source mounting surface) 51A. Can be set small. Therefore, also in the present embodiment, the thickness of the LED base material 5B is reduced, and the thickness of the entire light source module 3B is also reduced.

<Embodiment 4>
Next, Embodiment 4 of the present invention will be described with reference to FIG. In this embodiment, the light source module 3C is illustrated. FIG. 10 is a perspective view of the light source module 3C of the fourth embodiment. As in the first embodiment, the light source module 3C includes a plurality of LED light sources 4C and an LED base material 5C on which a wiring pattern 6C is formed. Each LED light source 4C is electrically connected to each other by a wiring pattern 6C. However, each LED light source 4C is mutually connected in series by the wiring pattern 6C. In addition, the anode side terminal (not shown) and the cathode side terminal (not shown) of the LED light source 4C are arranged so as to be aligned along the longitudinal direction of the LED base 5C.

The wiring pattern 6C is formed on an end surface (light source mounting surface) 51C on which the LED light source 4C is mounted and a plate surface (adjacent surface) 52C adjacent to the end surface 51C. A wiring portion 65 that is a part of the wiring pattern 6C is formed on each of the end surface 51C and the plate surface 52C. In the present embodiment, the wiring pattern 6C is not formed on the plate surface 53C.

As in the present embodiment, the wiring pattern 6C formed on the LED base material 5C may connect the LED light sources 4C in series with each other.

<Embodiment 5>
Next, Embodiment 5 of the present invention will be described with reference to FIG. In this embodiment, the light source module 3D is illustrated. FIG. 11 is a side view of the light source module 3D of the fifth embodiment. Similar to the first embodiment, the light source module 3D includes a plurality of LED light sources 4 and an LED base 5D on which a wiring pattern (not shown) is formed. However, the external shape of the LED base material 5D in the present embodiment is different from that of the first embodiment. As FIG. 11 shows, the side surface shape of LED base material 5D has comprised the substantially elliptical shape. The portion where the LED light source 4 is mounted has a flat end surface 51.

The LED base 5D has a columnar shape extending along one direction (X-axis direction). The said end surface 51 has comprised the rectangular shape extended elongate along the longitudinal direction of LED base material 5D. That is, the end surface 51 has a flat surface shape. In the case of this embodiment, this end surface 51D is a light source mounting surface 51D, and a plurality of LED light sources 4 are mounted as described above.

The surface (adjacent surface) 52D adjacent to the end surface 51D is a single curved surface as shown in FIG. The end surface 51D has a shape sandwiched by one surface 52D from both ends in the short direction. That is, the end surface 51D is adjacent to one surface (adjacent surface) 52D. The adjacent surface 52D has an elliptic cylindrical surface shape whose cross-sectional shape (side surface 55D shape) is an elliptical arc shape.

As in the present embodiment, the adjacent surface 52D of the LED base material 5D may be a curved surface. Further, the end surface 51D of the LED base 5D may be adjacent to one surface (adjacent surface) 52D. When the adjacent surface 52D of the LED base material 5D is a curved surface as in the present embodiment, for example, the contact area between the LED base material 5D and peripheral members such as the bottom plate 14a and the wall 14d of the chassis (accommodating member) 14 This is suitable for the case where it is desired to reduce the amount.

In the light source module 3D of the present embodiment, it is possible to set the vertical width of the end surface (light source mounting surface) 51D to be small by assigning the portion where the wiring pattern is formed to the plate surface (adjacent surface) 52D. . Therefore, also in the present embodiment, the thickness of the LED base 5D is reduced and the thickness of the entire light source module 3D is also reduced.

In another embodiment, the adjacent surface 52D may be a cylindrical surface having a circular cross section. Furthermore, in another embodiment, the adjacent surface 52D may have another curved shape such as a wave shape.

<Embodiment 6>
Next, Embodiment 6 of the present invention will be described with reference to FIG. In this embodiment, the light source module 3E is illustrated. FIG. 12 is a side view of the light source module 3E of the sixth embodiment. Similar to the first embodiment, the light source module 3E includes a plurality of LED light sources 4 and an LED base 5E on which a wiring pattern (not shown) is formed. However, the external shape of the LED base material 5E in the present embodiment is different from that of the first embodiment. As shown in FIG. 12, the cross-sectional shape (side 55E shape) of the LED base 5E is an isosceles triangle. A surface 52E and a surface 53E are arranged so as to sandwich the end surface 51E on which the LED light source 4 is mounted. The surfaces 52E and 53E are set to have the same size.

The LED base 5E has a triangular prism shape extending along one direction (X-axis direction). The end face 51E has a rectangular shape that is elongated along the longitudinal direction of the LED base 5E. That is, the end surface 51E has a flat surface shape. In the case of this embodiment, this end surface 51E is the light source mounting surface 51E, and a plurality of LED light sources 4 are mounted as described above.

The two surfaces (adjacent surfaces) 52E and 53E adjacent to the end surface 51E each have a rectangular shape extending along the longitudinal direction of the LED base 5E, and have a larger area than the end surface 51E. The vertical width of each of the two surfaces (adjacent surfaces) 52E and 53E (the width in the short direction of the LED base 5E) is longer than the vertical width of the end surface 51E (the width in the short direction of the LED base 5). .

As in this embodiment, the surfaces (adjacent surfaces) 52E and 53E of the LED base 5E are not arranged in parallel with each other, and the surfaces (adjacent surfaces) 52E and 53E are adjacent to each other. Also good.

In the light source module 3E of the present embodiment, the vertical width of the end surface (light source mounting surface) 51E can be set small by assigning locations where the wiring pattern is formed to the surfaces (adjacent surfaces) 52E and 53E. Yes. Therefore, also in the present embodiment, the thickness of the LED base 5E is reduced and the thickness of the entire light source module 3E is also reduced. In the case of this embodiment, the LED base material 5E is thinner than the case of a quadrangular prism shape. In the case of the present embodiment, the portion where the adjacent surfaces 52E and 53E of the LED base 5E are adjacent to each other is pointed. Therefore, it is also possible to install the light source module 3E in the chassis 14 with this pointed portion pierced into the wall 14d of the chassis 14. When the end surface 19d of the light guide plate 19 is inclined with respect to the plate surface 19a (the bottom plate 14a of the chassis 14), the light source module 3E according to the present embodiment has the LED light source 4 with respect to the inclined end surface 19d. Are easily installed in the chassis 14 in a state of being opposed from the front.

In other embodiments, the cross-sectional shape (side 55E shape) of the LED base 5E may be another triangular shape such as a right triangle shape or a regular triangle shape.

<Embodiment 7>
Next, Embodiment 7 of the present invention will be described with reference to FIG. In this embodiment, the light source module 3F is illustrated. FIG. 13 is a side view of the light source module 3F of the seventh embodiment. Similarly to the second embodiment, the light source module 3F is formed by bending a flat LED base material 5F into a predetermined shape. However, the light source module 3F of the present embodiment is different from that of the second embodiment in that the mounting portion 511F including the end surface (light source mounting surface) 51F on which the LED light source 4 is mounted is sandwiched from both sides. Two adjacent portions 521F and 531E are bent. That is, the plate surface (adjacent surface) 52F provided in the adjacent portion 521F and the plate surface (adjacent surface) 53F provided in the adjacent portion 531F face each other. In addition, the wiring pattern (not shown) connected to the LED light source 4 is allocated on the adjacent surface 52F and the adjacent surface 53F, respectively.

As in this embodiment, the LED base material 5F may be bent and processed so as to sandwich the LED light source 4.

In the light source module 3F of the present embodiment, the vertical width of the end surface (light source mounting surface) 51F can be set small by assigning locations where the wiring pattern is formed to the plate surfaces (adjacent surfaces) 52F and 53F. ing. Therefore, also in the present embodiment, the thickness of the LED base material 5F is reduced and the thickness of the entire light source module 3F is also reduced.

<Eighth embodiment>
Next, an eighth embodiment of the present invention will be described with reference to FIG. In this embodiment, the light source module 3G is illustrated. FIG. 14 is a side view of the light source module 3G of the eighth embodiment. Similarly to the second embodiment, the light source module 3G is formed by bending a flat LED base material (original base material) 5G into a predetermined shape. However, the light source module 3G of the present embodiment is different in the bending method from that of the second embodiment, and approaches the mounting portion 511 including the end surface (light source mounting surface) 51G on which the LED light source 4 is mounted from one side. One adjacent portion 531G is bent. A wiring pattern (not shown) connected to the LED light source 4 is assigned on the adjacent surface 53G. The mounting portion 511G and the adjacent portion 531G intersect substantially perpendicularly.

In the light source module 3G of the present embodiment, the vertical width of the end surface (light source mounting surface) 51G can be set small by assigning a portion where the wiring pattern is formed to the plate surface (adjacent surface) 53G. . Therefore, also in this embodiment, the thickness of the LED base material 5G is reduced and the thickness of the entire light source module GF is also reduced.

<Ninth Embodiment>
Next, Embodiment 9 of the present invention will be described with reference to FIG. In this embodiment, the light source module 3H is illustrated. FIG. 15 is a side view of the light source module 3H of the ninth embodiment. As in the second embodiment, the light source module 3H is formed by bending a flat LED base material (original base material) 5H into a predetermined shape. The flat LED substrate (original substrate) 5H is bent so that the mounting portion 511H is sandwiched between the two adjacent portions 521H and 531H. That is, the LED light source 4 mounted on the surface (light source mounting surface) 51H of the mounting portion 511H is sandwiched between the adjacent portion 521H and the adjacent portion 531H.

In the light source module 3H of this embodiment, a wiring pattern (not shown) is formed on the surface (adjacent surface) 52H of one adjacent portion 521H, instead of two adjacent portions 521H and 531H. The wiring pattern is not formed on the surface of the other adjacent portion 531H, and the adjacent portion 531H is a heat radiating portion 531H for improving heat dissipation. The heat dissipating part 531H is composed of a part of a plate-like base material part constituting the LED base material 5H. The base material portion is made of a metal material excellent in heat dissipation such as an aluminum-based material (for example, aluminum or aluminum alloy) or copper.

As in the present embodiment, the light source module 3H may include a heat radiating portion 531H. The light source module 3H is installed in the chassis (accommodating member) 14 so that the end of the light guide plate 19 used for the lighting device 12 (see FIG. 2) is placed on the surface of the heat radiating part 531H. Also good.

<Embodiment 10>
Next, Embodiment 10 of the present invention will be described with reference to FIG. In this embodiment, the light source module 3I is illustrated. FIG. 16 is a side view of the light source module 3I according to the tenth embodiment. As in the first embodiment, the light source module 3I includes a plurality of LED light sources 4 and an LED base 5I on which a wiring pattern (not shown) is formed. However, the external shape of the LED base material 5I in the present embodiment is different from that of the first embodiment. As shown in FIG. 16, the cross-sectional shape (side surface 55I shape) of the LED base 5I is trapezoidal. An adjacent surface 52I and a surface 53I are arranged so as to sandwich the end surface 51I on which the LED light source 4 is mounted. The surfaces 52I and 53I are flat surfaces and are arranged so as to expand each other. In the present embodiment, the surfaces 52I and 53I are set to the same size. Note that the end surface 54I is arranged in parallel with the end surface 51I, and has a larger vertical width (width in the Z-axis direction) than the end surface 51I.

The LED base 5I has a trapezoidal column shape extending along one direction (X-axis direction). The end face 51I has a rectangular shape that extends elongated along the longitudinal direction of the LED base 5I. That is, the end surface 51I has a flat surface shape. In the case of the present embodiment, this end surface 51I is a light source mounting surface 51I, and a plurality of LED light sources 4 are mounted as described above.

The two surfaces (adjacent surfaces) 52I and 53I adjacent to the end surface 51I have a rectangular shape extending along the longitudinal direction of the LED base 5I, and have a larger area than the end surface 51I. The vertical widths of the two surfaces (adjacent surfaces) 52I and 53I (the width in the short direction of the LED base material 5I) are larger than the vertical width of the end surface 51I (the width in the short direction of the LED base material 5I). long.

As in this embodiment, the LED substrate 5I may have a form in which the surfaces (adjacent surfaces) 52I and 53I are arranged so as to expand from the end surface 51I side toward the end surface 54I side.

In the light source module 3I of the present embodiment, the vertical width of the end surface (light source mounting surface) 51I can be set small by assigning locations where the wiring pattern is formed to the surfaces (adjacent surfaces) 52I and 53I. Yes. Therefore, also in this embodiment, the thickness of the LED base material 5I is reduced and the thickness of the entire light source module 3I is also reduced. In addition, the light source module 3I of this embodiment has a larger surface area than the case where the LED base 5I has a quadrangular prism shape, and is excellent in heat dissipation.

<Embodiment 11>
Next, an eleventh embodiment of the present invention will be described with reference to FIG. In this embodiment, the light source module 3J is illustrated. FIG. 17 is a side view of the light source module 3J according to the eleventh embodiment. Similar to the first embodiment, the light source module 3J includes a plurality of LED light sources 4 and an LED base material 5J on which a wiring pattern (not shown) is formed. However, the external shape of the LED base material 5J in the present embodiment is different from that of the first embodiment. As FIG. 17 shows, the cross-sectional shape (side surface 55J shape) of LED base-material 5J has comprised the convex shape. In other words, the shape is such that another rectangle (square) protrudes from the middle of the rectangle.

The end surface 51J on which the LED light source 4 is mounted is disposed on the convex top surface, and a surface 52J and a surface 53J as adjacent surfaces are disposed so as to sandwich the end surface 51J. Each of the surface 52J and the surface 53J is bent in a stepped shape. A surface shape that is bent in a step shape is referred to as a bent surface shape.

The LED base 5J has a convex column shape extending along one direction (X-axis direction). The end face 51J has a rectangular shape that is elongated along the longitudinal direction of the LED base 5J. That is, the end surface 51J has a flat surface shape. In the case of this embodiment, this end surface 51J is the light source mounting surface 51J, and a plurality of LED light sources 4 are mounted as described above.

The two surfaces (adjacent surfaces) 52J and 53J adjacent to the end surface 51J each have a shape extending along the longitudinal direction of the LED base 5J, and the area is larger than the end surface 51J.

As in this embodiment, the surfaces (adjacent surfaces) 52J and 53J of the LED base material 5J may be curved surfaces instead of flat surfaces.

In the light source module 3J of the present embodiment, the vertical width of the end surface (light source mounting surface) 51J can be set small by assigning locations where the wiring pattern is formed to the surfaces (adjacent surfaces) 52J and 53J. Yes. Therefore, also in the present embodiment, the thickness of the LED base material 5J is reduced and the thickness of the entire light source module 3J is also reduced. In the light source module 3J of the present embodiment, the portion where the adjacent surface 53J is formed protrudes downward. For example, the light source module 3J is stably mounted in the chassis 14 by fitting the protruding portion into a recess provided in the bottom plate 14a of the chassis 14, for example.

<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 LED light source 4 is configured to include one anode-side terminal and one cathode-side terminal. In other embodiments, for example, there may be two or more anode-side terminals of the LED light source, or two or more cathode-side terminals. When an LED light source having a plurality of such terminals is used (for example, when each LED light source 4 is driven to scan), the wiring pattern 6 may be appropriately set according to the number of terminals.

(2) In each of the above embodiments, each LED light source 4 mounted on the end surface (light source mounting surface) 51 of the LED base 5 is electrically connected to each other by one wiring pattern 6. The LED light sources 4 are controlled to be turned on collectively. In another embodiment, for example, each LED light source 4 on the LED base 5 is divided into a plurality of sets by using a wiring pattern 6 that divides the LED light sources 4 into a plurality of sets. The light source module 3 may be configured so that it can be controlled.

(3) In the light source module 3 of the first embodiment, the anode side terminal of the LED light source 4 is arranged on the plate surface (adjacent surface) 52 side, and the cathode side terminal is arranged on the plate surface (adjacent surface) 53 side. Was configured. In another embodiment, the anode side terminal may be disposed on the plate surface 53 side, and the cathode side terminal may be disposed on the plate surface 52 side.

(4) The light source module 3 of the first embodiment is arranged so as to face the end surface 19d on one long side of the light guide plate 19. In other embodiments, for example, the light source module 3 may be arranged so as to face the end surface 19d on the other long side of the light guide plate 19, or on the end surface 19c on the short side. The light source modules 3 may be arranged so as to face each other.

(5) The light source module 3 according to the first embodiment is suitable for the liquid crystal display device 10, but may be used for applications other than the liquid crystal display device 10 (for example, an indoor lighting device or a display lamp device).

(6) In another embodiment, when the light source module 3 is used for the lighting device 12, it may be used in a state of being fixed to the heat radiating member. FIG. 18 is a side view of the light source module 3 </ b> C fixed to the heat dissipation member 22. The light source module 3C is illustrated in the fourth embodiment. The heat dissipating member 22 is made of a metal material such as aluminum or copper, extends along the longitudinal direction (X-axis direction) of the light source module 3C (LED base material 5C), and is bent into an L shape when viewed from the side. It has a shape. The light source module 3C is fixed to the heat radiating member 22 using fixing means (not shown) such as screws. As described above, the light source module 3C may be fixed to the heat radiating member 22 separate from the light source module 3C and used as the light source of the lighting device 12.

3 ... light source module, 4 ... LED light source (light source), 5 ... LED substrate (light source substrate), 51 ... end face (light source mounting surface), 52, 53 ... plate surface ( Adjacent surface), 6 ... wiring pattern, 10 ... liquid crystal display device (display device), 11 ... liquid crystal panel (display panel), 12 ... lighting device, 13 ... bezel, 14 .... Chassis (housing member), 15 ... Optical sheet, 19 ... Light guide plate, 20 ... Reflective sheet, 21 ... Frame

Claims (18)

1. Multiple light sources;
   A light source substrate having a light source mounting surface on which a plurality of the light sources are mounted, and one or two adjacent surfaces different from the light source mounting surface and adjacent to the light source mounting surface;
   A light source module comprising: a wiring pattern for electrically connecting a plurality of the light sources to each other and supplying power to each light source, wherein at least a part of the wiring pattern is formed on the adjacent surface.
2. The light source substrate has one plate-shaped mounting portion including the light source mounting surface, and one or two plate-shaped adjacent portions adjacent to the mounting portion and including the adjacent surface. The light source module according to claim 1, wherein the light source module is formed by being bent.
3. 3. The light source module according to claim 1, wherein the light source substrate has a flat surface on the light source mounting surface and a curved surface on the adjacent surface.
4. The light source module according to any one of claims 1 to 3, wherein the adjacent surface has a cylindrical surface shape whose cross-sectional shape is an arc shape, or an elliptic cylinder surface shape whose cross-sectional shape is an elliptical arc shape.
5. 2. The light source substrate has a triangular prism shape with a triangular cross section, the light source mounting surface is a flat surface, two adjacent surfaces are adjacent to each other, and each is a flat surface. Or the light source module of Claim 2.
6. The light source substrate has a quadrangular prism shape with a quadrangular cross section, the light source mounting surface is a flat surface shape, and the two adjacent surfaces are each a flat surface shape, and are arranged in parallel to each other. Item 3. The light source module according to item 1 or 2.
7. The light source base material has a trapezoidal column shape with a trapezoidal cross section, the light source mounting surface is a flat surface shape, and the two adjacent surfaces are each a flat surface shape and are arranged so as to expand each other. Item 3. The light source module according to item 1 or 2.
8. The light source substrate has a convex column shape having a convex cross section, the light source mounting surface is a flat surface shape and is arranged on the top surface of the convex column shape, and the two adjacent surfaces are stepped. The light source module according to claim 1, wherein the light source module is bent in a bent shape.
9. The light source module according to any one of claims 1 to 8, wherein the wiring pattern is a printed wiring.
10. The light source module according to any one of claims 1 to 9, wherein a width of the light source mounting surface is set narrower than a width of the adjacent surface.
11. The light source module according to claim 1, wherein the light source base material includes a base material portion made of copper.
12. The light source module according to any one of claims 1 to 10, wherein the light source base material includes a base material portion made of aluminum.
13. The light source module according to any one of claims 1 to 12, wherein the light source substrate has a heat radiating portion.
14. The light source module according to any one of claims 1 to 13, wherein the light source base material is fixed to a heat radiating member.
15. A lighting device comprising the light source module according to any one of claims 1 to 14.
16. A lighting device according to claim 15;
    A display panel that performs display using light from the illumination device.
17. The display device according to claim 16, wherein the display panel is a liquid crystal panel using liquid crystal.
18. A television receiver comprising the display device according to claim 16 or claim 17.

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