JP6713648B2 - Display device - Google Patents

Description

The present invention relates to a display device.

The present inventor has found that a light source member, a display plate, and an emission surface that is arranged in close contact with or at a distance from the back surface side of the display plate and that emits light from the light source member incident from the side surface toward the display plate. There is proposed a display device including a light guide plate on which a light-transmitting plate is formed, and a light transmission adjusting member arranged on a light-exiting surface formed on the opposite side of the light-exiting surface of the light guide plate (Patent Document 1). ).

This display device allows the display information such as characters and figures on the display plate to be clearly seen from the front side by transmitting the light on the back side, and supports the support members such as columns arranged on the back side. Provided is a display device in which a shadow of a support member such as a support is difficult to recognize from the front even if the shadow is projected on the back surface of the display plate. However, when used as an internally illuminated display device at night, the distance between the display plate and the light source member cannot be adjusted because the light source member is fixed. Therefore, when adjusting the intensity of light, there is a problem that there is no other method than adjusting the light amount of the light source.

JP, 2014-98776, A

The present invention is mainly to provide a display device capable of easily adjusting the intensity of light from the light source member to the front, the position of the focal point, the diffusion state, etc. by changing the position of the light source member. To aim.

The present invention employs the following means in order to achieve the above object.

The display device according to the present invention is
Housing and
A light transmissive display body having display information arranged on the front side of the housing;
A light source member disposed inside the housing and on the back side of the light transmissive display body, and irradiating the back surface of the light transmissive display body with light
A long holding member for holding the light source member,
A fixing plate having a plurality of through holes capable of positioning the distance between the light transmissive display and the light source member in a state where the holding member is inserted,
A fixing member for fixing the holding member inserted into the through hole,
Equipped with
The plurality of through holes are arranged so that the distance from the front side is different.

According to the display device of the present invention, the position of the light source member in the housing is changed by selecting and inserting the holding member holding the light source member into any of the plurality of through holes formed in the fixing plate. Can be placed. That is, the relative position with respect to the light transmission display can be changed and arranged. Thereby, the intensity of the light emitted from the light transmissive display can be adjusted by changing the position of the light source member. Further, it can be arranged at a position in consideration of the focal point and the diffusion state of the light from the light source member. This makes it easy to set the light emitting state of the light transmissive display body to an optimum state.

Further, in the display device according to the present invention, the through holes may be linearly arranged from the front surface side to the back surface side. By adopting such a configuration, it is possible to easily adjust the distance between the light source member and the light transmissive display body.

Further, in the display device according to the present invention, at least two or more of the plurality of through holes may partially overlap with each other. By adopting such a configuration, the distance between the light source member and the light transmissive display member can be finely adjusted.

Further, the display device according to the present invention may be characterized in that the plurality of through holes are arranged at unequal intervals. It is possible to adjust the light source member to a more optimal position by calculating in advance in consideration of the light diffusion degree and intensity of the light source member and providing a plurality of through holes at the optimal position.

Further, in the display device according to the present invention, the holding member may be provided with a diffusing portion that diffuses the light of the light source. By adopting such a configuration, it is possible to irradiate the display member with light after diffusing the light in the vicinity of the light source member, and thus it is possible to cause the light transmitting display body to emit light in a more uniform and even manner.

Further, in the display device according to the present invention, the holding member is formed in a cross-sectional shape other than a circular shape, and the fixing plate can arrange the holding member at one or two predetermined angles. It may be characterized in that a through hole is formed. By adopting such a configuration, the light source member can be installed in a state where the light emitting direction of the light source is set to a predetermined angle, and the light source member can be easily changed by a predetermined angle.

Further, in the display device according to the present invention, the holding member is formed in a cross-sectional shape other than a circular shape, and further, the holding member can be inserted into one or two or more predetermined angles. May be provided. By adopting such a configuration, the light source member can be installed in a state where the light emitting direction of the light source is similarly set at a predetermined angle, and the light source member can be easily changed by a predetermined angle.

Further, in the display device according to the present invention, a diffusion plate may be provided on the back side of the housing. By adopting such a configuration, it is possible to diffuse the sunlight from the back surface and irradiate the light transmission display body on the front side. As a result, it is possible to make the light transmissive display emit light more uniformly.

Further, in the display device according to the present invention, a plurality of the light source members may be provided in parallel. By adopting such a configuration, the position of each light source member can be adjusted to provide a light transmissive display body having a more suitable light emitting state.

Further, in the display device according to the present invention, a back parallel plate member having a plurality of plate members arranged in parallel may be provided on the back surface side of the diffusion plate. By adopting such a configuration, it is possible to prevent sunlight from being directly applied to the diffuser plate, and more uniform light can be emitted to the front side.

According to the display device of the present invention, by changing the position of the light source member, a light transmissive display body having a more suitable light emitting state can be obtained.

FIG. 1 is a front view, a right side view, and a plan view showing a display device 100 according to an embodiment. FIG. 2 is a cross-sectional view of the AA portion of the display device 100 according to the embodiment. FIG. 3 is a cross-sectional view of the BB portion of the display device 100 according to the embodiment. FIG. 4 is a perspective view and a cross-sectional view showing the light source member 30 used in the display device 100 according to the embodiment. FIG. 5 is a cross-sectional view showing another embodiment of the light source member 30. FIG. 6 is a schematic view showing another embodiment of the fixing plate 40. FIG. 7 is a perspective view showing the light transmission display body tensioning jig 78. FIG. 8 is a sectional view showing still another embodiment of the light source member 30. FIG. 9 is a cross-sectional view showing still another embodiment of the light source member 30. FIG. 10 is a schematic view showing another embodiment of the fixing plate 40. FIG. 11 is a rear view, a C-C sectional view, and a partially enlarged sectional view of the rear parallel plate member 86. FIG. 12 is a reference diagram showing a state in which a plurality of openable/closable plate members 85 are arranged on the back side of the light source member 30.

An embodiment of a display device 100 according to the present invention will be described in detail with reference to the drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting these configurations, and do not depart from the gist of the present invention. Can be changed as appropriate. In addition, the same or similar reference numerals are given to corresponding components in each drawing.

(First embodiment)
The display device 100 according to the first embodiment is mainly shown in FIGS. FIG. 1 is a front view, a right side view, and a plan view of a display device 100 according to the first embodiment. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a sectional view taken along the line BB of FIG.

As shown in FIG. 2, the display device 100 according to the first embodiment includes a housing 10, a diffusion plate 20 that diffuses the light of the sunlight incident from the back side, and a diffusion plate 20 that is on the front side of the diffusion plate 20. A plurality of light source members 30 arranged in parallel on the back surface side of the transmissive display body 60, a holding member 34 (see FIG. 4) that holds the light source member 30, and a portion near one side of the holding member 34 are supported. The fixing plate 40 and the fixing member 50 for fixing the other side, and the light transmission display body 60 arranged on the front side of the housing 10 are mainly provided.

As shown in FIGS. 1 and 2, the housing 10 has an upper side surface 11, a right side surface 12, a lower side surface 13 and a left side surface 14, and the front surface and the back surface are exposed to the sunlight from the back surface side. A front side opening 15 and a back side opening 16 are formed substantially in the center while forming an outer peripheral piece 19 around the opening so that light can be emitted from the side. The outer peripheral piece 19 may be integrally molded with the side surfaces 11 to 14, or may be a plate member attached as a separate body. The lower side surface 13 may be provided with a hole (not shown) for draining water when rain or the like enters the inside.

In the housing 10, a diffusion plate holding member 70 for holding the diffusion plate 20, a light source member 30, a holding member 34 for holding the light source member 30, and a fixing plate 40 for fixing the holding member 34. The fixing member 50 and the light transmission display body holding member 77 that holds the light transmission display body 60 are housed.

The diffusion plate 20 is a member for diffusing the light of the sunlight and emitting it to the front side, and a plate that can transmit a part of the light from the back surface and reduce the light emitted from the front surface is used. .. For example, an acrylic diffuser plate, a milk half or transparent acrylic plate to which a diffusion sheet is attached, and the like are used. Of course, the present invention is not limited to these, and any plate material or sheet may be used as long as it has a function of preventing the light incident from the rear surface from being concentrated and applied to a part of the light transmission display 60.

The diffuser plate holding member 70 is for attaching the above-mentioned diffuser plate 20, and as shown in FIG. 2, is provided around the rear side opening 16 of the housing 10 over the entire circumference by any means. There is. The diffusion plate holding member 70 is provided with a diffusion plate attachment portion 71 for attaching the diffusion plate 20. In the present embodiment, the diffusion plate mounting portion 71 has a back surface receiving portion 72 made of an elastic body such as rubber and a front side pressing member 73 having an L-shaped cross section, and the back surface receiving portion 72 is diffused. It is fixed by pressing the diffusion plate 20 with the front side pressing member 73 in a state where the plate 20 is in contact with the front side. Further, on the back surface of the diffusion plate holding member 70, a mounting bracket 95 for mounting the display device 100 on a predetermined portion is provided.

As shown in FIG. 4, the light source member 30 includes a light source 33a such as an LED, an elongated substrate 33b on which the plurality of light sources 33a are linearly mounted, and a channel member 33c to which the substrate 33b is attached. have.

The holding member 34 is made of a long member having a substantially cylindrical cross section, and has a concave light source member attaching portion 34a having an open end surface for attaching the light source member 30 to a part of the peripheral surface. .. The light source member attaching portion 34a has a channel member holding portion 34b provided on the opening side for holding the channel member 33c, while the channel member 33c is provided on the concave bottom surface of the channel member holding portion 34b. A protrusion 34c for pressing is provided. Thereby, the light source member 30 can be fixed inside by inserting the light source member 30 from the end surface. Further, the holding member 34 is formed with a screw hole 34d having an opening at a center thereof so that the holding member 34 can be fixed to the fixing member 50 with a bolt or a screw. The holding member 34 can be fixed to the fixing member 50 using the screw holes 34d.

As shown in FIG. 5, the holding member 34 may be provided with a diffusing portion 35 on the front surface of the light source member 30 for diffusing the light of the light source 33a. By providing the diffusing section 35, it is possible to reduce the concentration of the light from the light source 33a on the part of the light transmissive display body 60 and the irradiation thereof. As the diffusing unit 35, a semi-transparent member having a diffusing function such as milky half may be used, or it may be formed in a convex lens shape to refract and diffuse the light of the light source 33a.

The fixing plate 40 is a member for positioning the light source member 30 at a predetermined position. As shown in FIG. 3, the fixing plate 40 is provided with a plurality of through holes 41 having substantially the same size and shape as the cross section of the holding member 34 of the light source member 30, and the light source member 30 is inserted into the through holes 41. By doing so, the light source member 30 is positioned in the front and rear directions and the left and right directions. The light source member 30 can change the position of the light source member 30 by selecting the through hole 41. The position of the through-hole 41 is not particularly limited as long as it is arranged at a position where the distance from the front side can be changed, and as shown in FIG. It may be provided at the position. Further, the through holes 41 may be arranged such that the through holes 41 overlap with each other as shown in FIG. 3, or may be provided completely independently as shown in FIG. By providing the through holes 41 so as to overlap each other, finer position adjustment can be performed. Further, the positional relationship between the through holes 41 does not necessarily have to be at equal intervals, and they may be arranged at unequal intervals.

As shown in FIGS. 2 and 3, the fixing plate 40 is fixed to the groove 76a of the fixing plate holding member 76 attached to the diffusion plate holding member 70 provided above the inside of the rear side opening 16 by bolts 76b. ing. As shown in FIG. 2, the fixing plate 40 can be slidably moved in the groove 76a by loosening the bolt 76b, and the position in the left-right direction can be adjusted. The power source and wiring of the light source member are arranged between the fixed plate holding member 76 and the outer peripheral piece 19.

The fixing member 50 is a member for fixing the light source member 30, which is positioned by the fixing plate 40 in the front and back directions and the left and right directions, in the up and down direction. As shown in FIG. 2, the fixing member 50 is fixed to the diffusion plate holding member 70 provided below the rear side opening 16 with bolts or the like. The light source member 30 is fixed to the fixing member 50 with a bolt or the like in the screw hole 34d of the holding member 34, so that the lower end (the other end) is fixed and positioned in the vertical direction. At this time, since the light source member 30 has a circular cross section, the left and right rotation directions (directions) can be freely arranged.

The light transmissive display body 60 is arranged inside the front opening 15, has display information on its surface, and has a function of being visually recognized directly from the outside to notify the display information. The light transmissive display body 60 is made of a light transmissive plate or a light transmissive sheet. Examples of the light transmissive plate include a milk half plate and a transparent acrylic plate to which a diffusion sheet is attached. For example, a milk half board having a thickness of 1.0 mm to 5.0 mm is used, and predetermined information such as characters, figures, symbols, or a combination thereof is printed on the surface of the milk half board, or formed on the predetermined information. A film having a display information attached on its surface is used, for example, by attaching a film or a film on which predetermined information is printed. Examples of the light transmissive sheet include 3M ^™ Panagraphics ^™ flexible substrate and the like. In the present embodiment, an example using a light transmissive sheet is shown.

The method of attaching the light transmissive display 60 to the front opening 15 is not particularly limited, and various known means can be adopted. In the first embodiment, as shown in FIG. 6, a fixing plate holding member 76 and a fixing member 50 are provided with a light transmitting display member holding member 77 capable of fixing a light transmitting sheet as the light transmitting display member 60. The upper and lower sides of the light transmission display body 60 are pulled and stretched to be fixed. A light transmitting display member holding member 77 is provided with a light transmitting display member tensioning jig 78 on the outer peripheral side. As shown in FIG. 7, the light transmission display member tensioning jig 78 has a jig base portion 78a and a light transmission display member fixing member 78d. The jig base 78a has an insertion hole 78b into which the head of the bolt can be inserted on one side and a second insertion hole 78c into which the light transmissive display body fixture 78d can be inserted on the other side. The light transmission display 60 can be fixed to the light transmission display tension jig 78 by inserting the light transmission display 60 into the second insertion hole 78c so that the light transmission display 60 is sandwiched between the light transmission display fixtures 78d. .. As shown in FIG. 2, the light transmission display member tensioning jig 78 is attached to the outer periphery of the light transmission display member holding member 77, and the beam condition of the light transmission display member 60 is fixed by a bolt inserted into the insertion hole 78b. Can be adjusted. The light transmissive display body holding member 77 is a hollow long member having an outer cross-section formed in a substantially triangular shape, and one surface 77a on each of the four inner sides of the housing 10 is located inside from the front side toward the back side. It is arranged diagonally. This makes it easier for the light hitting the one surface 77a to be reflected and directed to the light transmission display body 60. Further, the surface of the one surface 77a is provided in white so that light is easily reflected. At this time, the light transmissive display body 60 is arranged on the back side with a gap from the outer peripheral piece 19 of the front side opening 15, has a sense of depth when viewed from the front, and is visible three-dimensionally. .. Further, even when the light transmissive display body 60 is shaken by the wind or flutters, the possibility that the light transmissive display body 60 hits the outer peripheral piece 19 and is damaged can be reduced.

Further, as shown in FIG. 3, through holes 11 a are provided on the upper side surface 11 of the housing 10 so as to correspond to the positions of the respective light source members 30. You can check. As shown in FIG. 2, the upper surface 11 is usually provided with a housing cover 98 capable of housing a power supply unit or the like for supplying power to the light source member 30 so that rainwater or the like does not enter. By removing the housing cover 98, the position of the light source member 30 can be confirmed from each through hole 41.

A plate for diffusing light may be further provided between the light source member 30 and the light transmissive display body 60 so that the light from the light source member 30 uniformly strikes the light transmissive display body 60.

In the display device 100 manufactured as described above, when the sunlight is shining from the front side during the daytime, the light from the front side is reflected by the light transmissive display body 60 and becomes visible. When sunlight is radiating from the back side, light is incident from the back side opening 16 and is radiated from the back side of the light transmissive display body 60, so that the display information of the light transmissive display body 60 can be visually recognized. .. On the other hand, when it is dark such as at night, it can be used as the internally illuminated display device 100 by causing the light source member 30 to emit light. At this time, the brightness of the light transmissive display body 60, the focus or diffusion state of the light source member 30, and the like can be easily changed by changing the position of the light source member 30. Further, for example, the LEDs of the light source members 30 used in the plurality of light source members 30 are of different types, or only one of the plurality of light source members 30 is replaced to replace the new light source member 30 with the surroundings. Even if the light source member 30 is brighter than the light source member 30, by changing the position of the light source member 30, the brightness of the light transmissive display body 60 can be made uniform.

Needless to say, the present invention is not limited to the above-described embodiments and can be implemented in various modes as long as they are within the technical scope of the present invention.

For example, in the above-described embodiment, the holding member 34 may be formed so as to be housed in the tubular member 34f that is formed in a tubular shape so as to surround the holding member 34, as shown in FIG. 8A. .. The tubular member 34f is made of a transparent or semitransparent material so that light is emitted to the outside, or is made of metal to have an opening at the light emitting portion, or a transparent member is provided in the opening. It is made by arranging. The inner peripheral surface of the cylindrical member 34f is formed in a star-shaped cross section. On the other hand, the holding member 34 is formed in a star shape having an inverted shape with respect to the inner peripheral surface of the tubular member 34f, except for the front side of the light source member 30. Therefore, as shown in FIG. 8B, it can be inserted into the tubular member 34f in a state of being positioned at a predetermined angle with respect to the central axis, and the light emitting direction of the light source member 30 can be changed. it can.

Note that, without using the tubular member 34f, the tubular member 34f can be used by providing the fixing plate 40 with a star-shaped through hole 41a similar to the tubular member 34f, as shown in FIG. 8C. Alternatively, the holding member 34 may be directly attached to the fixed plate 40. Even with such a configuration, the light emission direction of the light source member 30 can be changed for each predetermined angle. By making it possible to change the emission direction of light in this way, for example, when the periphery or the corner of the light transmission display body 60 is dark, the light source member 30 is directed in the dark direction, whereby the light transmission display body 60 is directed. 60 can be illuminated uniformly.

Although the holding member 34 has a substantially circular cross section in the above-described embodiment, the holding member 34 is not limited to this and may be a holding member 34 having a polygonal or elliptical cross section. In this case, the same effect can be obtained if the through hole 41 of the fixing plate 40 is manufactured in conformity with the shape of the cross section.

Further, in the above-described embodiment, the example in which the LED is used as the light source member 30 has been described, but as shown in FIG. 9A, a fluorescent lamp or an LED type fluorescent lamp may be used. In that case, the socket 80 may be provided inside the holding member 34, and the fluorescent lamp may be inserted for use. The holding member 34 is provided with a wiring housing portion 81 for passing wires and the like along the holding member 34. By thus providing the wiring storage portion 81 and forming the through hole 41a of the fixed plate 40 in accordance with the cross section as shown in FIG. 10, the holding member 34 is oriented in a predetermined direction (in FIG. 10, 1). It can be arranged in five directions) with respect to one through hole 51a. The method of specifying the direction in which the light source member 30 faces in advance by using a cross section other than such a circular shape can be used even when a light source member using LEDs is used.

Further, in the above-described embodiment, as shown in FIG. 2, the diffuser plate 20 is arranged on the back side of the light source member 30, but if only the diffuser plate 20 is used, the interior lighting display is performed at night. When used as a device, light will leak from the back side. Therefore, a device, a device, or the like may be separately provided on the back side of the light source member 30 so that the back side is opened only in the daytime to allow sunlight to enter and the nighttime is closed. For example, a sheet or film having a so-called high shielding property may be arranged on the back side of the light source member 30 so that it can be taken in and out. That is, only when the light source member 30 is turned on at night, a sheet or film having a high shielding property is arranged and used.

Further, for example, as shown in FIG. 11, a back surface parallel plate member 86 in which a plurality of plate members 85 are arranged in parallel in the lateral direction may be provided on the back surface of the diffusion plate 20. As shown in the CC sectional view of FIG. 11, the respective plate members 85 are arranged so as to be inclined so that the front side is low and the back side is high. By providing such a back parallel plate member 86, as shown by the arrow in FIG. 11, the light incident from obliquely above is reflected after being reflected by the plate member 85 at one end. As a result, more uniform light can be emitted to the front side, that is, the light transmissive display body 60, as compared with the case where sunlight is directly incident on the diffusion plate 20. Further, when used as an internally illuminated display device at night or the like, it is possible to suppress light from leaking to the back side. Although the color of the plate material 85 is not limited, it is preferably formed in white. This is because it is possible to make it easier to take in the sunlight. Further, the plate member 85 does not necessarily have to be a flat surface, may have a curved surface, and as shown in FIG. 11, a part of the front surface side and the back surface side may be bent and formed. By bending and forming, the strength of the plate material can be improved. Further, the plate material 85 is not limited to be horizontal and may be vertically arranged. Further, as shown in FIG. 12, the plate member 85 may be rotated so as to be opened and closed. When using sunlight from the back side in the daytime, as shown in FIG. 12A, it is used by opening it so that sunlight can enter between a plurality of plate members 85, and at night, as shown in FIG. 12B. The light source member 30 may be closed so that the light does not leak from the back side.

Further, as another example, a linear polarization type polarizing film or sheet is installed so that two sheets can be placed on top of each other in a state of being rotated by 90 degrees on the back side, and one of them can be taken in and out. Alternatively, the state of one sheet and the state of two sheets may be changeable at any time. That is, in the daytime, one polarizing film is used to allow sunlight light to enter from the back surface, and at night, two light sheets are stacked so that the light of the light source member 30 does not leak from the back surface side. It should be noted that these switchings may be provided so as to be automatically switchable according to time, or may be provided so as to be switchable by installing an optical sensor or the like outside and sensing the brightness of the outside.

As shown in the above-described embodiment, it can be used as a display device, for example, a road sign.

10... Housing, 11... Upper side surface, 11a... Through hole, 12... Right side surface,
13... Lower side surface, 14... Left side surface, 15... Front side opening, 16... Back side opening,
19... Peripheral piece, 20... Diffusion plate, 30... Light source member, 33a... Light source,
33b... Substrate, 33c... Channel member, 34... Holding member,
34a... Light source member attaching portion, 34b... Channel member holding portion,
34c... Projection, 34d... Screw hole, 34f... Cylindrical member, 35... Diffusion part,
40... Fixing plate, 41... Through hole, 41a... Through hole, 50... Fixing member,
51a... Through hole, 60... Light transmissive display, 70... Diffusion plate holding member,
71... Diffusion plate mounting portion, 72... Back receiving portion, 73... Front side pressing member,
76... Fixed plate holding member, 76a... Groove, 76b... Bolt, etc.
77... Light transmission display member holding member, 77a... One surface,
78... Light-transmitting display member tensioning jig, 78a... Jig base, 78b... Inserting hole,
78c... 2nd insertion hole, 78d... Light transmissive display body fixing tool, 80... Socket,
81... Wiring storage part, 85... Plate material, 86... Back parallel plate member,
95... Mounting bracket, 98... Housing cover, 100... Display device

Claims (10)

Housing and
A light transmissive display body having display information arranged on the front side of the housing;
A light source member disposed inside the housing and on the back side of the light transmissive display body, and irradiating the back surface of the light transmissive display body with light
A long holding member for holding the light source member,
A fixing plate having a plurality of through holes capable of positioning the distance between the light transmissive display and the light source member in a state where the holding member is inserted,
A fixing member for fixing the holding member inserted into the through hole,
Equipped with
The display device, wherein the plurality of through holes are arranged so that the distance from the front side is different. The display device according to claim 1, wherein the through-holes are linearly arranged from the front side to the back side. The display device according to claim 1, wherein at least two or more of the plurality of through holes are formed so as to partially overlap each other. The display device according to claim 1, wherein the plurality of through holes are arranged at unequal intervals. The display device according to claim 1, wherein the holding member includes a diffusion unit that diffuses the light of the light source member. The holding member is formed in a cross-sectional shape other than circular,
The display according to any one of claims 1 to 5, wherein the fixing plate is formed with a through hole capable of disposing the holding member at one or two or more predetermined angles. apparatus. The holding member is formed in a cross-sectional shape other than circular,
The display device according to any one of claims 1 to 5, further comprising a tubular member into which the holding member can be inserted at one or more predetermined angles. The display device according to claim 1, further comprising a diffusion plate provided on a back surface side of the housing. The display device according to claim 1, wherein a plurality of the light source members are provided in parallel. The display device according to claim 8, further comprising a back parallel plate member having a plurality of plate members arranged in parallel with each other on the back surface side of the diffusion plate.

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