JP2004157204A - Internally lighting type display system - Google Patents

Internally lighting type display system Download PDF

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Publication number
JP2004157204A
JP2004157204A JP2002320679A JP2002320679A JP2004157204A JP 2004157204 A JP2004157204 A JP 2004157204A JP 2002320679 A JP2002320679 A JP 2002320679A JP 2002320679 A JP2002320679 A JP 2002320679A JP 2004157204 A JP2004157204 A JP 2004157204A
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JP
Japan
Prior art keywords
light
light source
display system
guide plate
lighting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002320679A
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Japanese (ja)
Inventor
Yasuhiko Katsuki
康彦 香月
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Sekisui Jushi Corp
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Sekisui Jushi Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to JP2002320679A priority Critical patent/JP2004157204A/en
Publication of JP2004157204A publication Critical patent/JP2004157204A/en
Pending legal-status Critical Current

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  • Planar Illumination Modules (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Led Device Packages (AREA)
  • Liquid Crystal (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an internally lighting type system in which irregularity in lighting is reduced employing a relatively wide LED arranging interval and difference in light and shade at far and close locations from the light sources is made less. <P>SOLUTION: Light sources 2 are provided on both ends of a light guide plate 1 and face to each other. Therefore, chances of making irregularity in lighting are reduced even though light emitting diodes are arranged at relatively large interval and balance in light quantity at far and close locations from the sources 2 is easily obtained. By providing a reflecting means 3, which reflects light beams B1 from the other light source facing to the opposing light source surrounding the other light source 2, vicinity of the light source 2 is internally illuminated by light beams B2 being reflected by the means 3 and irregularity in lighting is reduced. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、光源として発光ダイオードを用いたエッジライト式の内照式表示システムに関するものである。
【0002】
【従来の技術】
従来、屋内で使用される液晶表示装置などに於いて、一面に乱反射面が設けられた透明板の端面に光源を配設した表示装置が知られている。又、光源として発光ダイオード(以下LEDとする)を用いたエッジライト式の内照式表示システムとしては、例えば特許文献1において、断面がコ字状の光源支持体に穿設された複数の貫通孔にLEDを装着した面発光装置が開示されている。かかる面発光装置は、LEDを用いていることで光源の寿命が長く、保守が極めて容易であるとの利点を有する。
【0003】
【特許文献1】
特開2000−338908号
【0004】
【発明が解決しようとする課題】
しかしながら、LEDは蛍光灯などと較べて光線の指向性が高く、LEDを光源として用いた内照式表示システムは、光源の間などにおいて照明むらが生じやすい。かかる照明むらを軽減するには、例えば特許文献1に記載の如く、6mmといった狭い間隔で等間隔にLEDを配置せざるを得なかった。
【0005】
また、上述の通りLEDは光線の指向性が高いことから、光源近傍の箇所と、光源から遠い箇所との光量のバランスをとるのが困難で、いずれか一方の明暗が顕著なものとなりがちなものであった。
【0006】
本発明は、かかる問題点に鑑みてなされたものであり、比較的広いLEDの配置間隔で照明むらを軽減でき、また光源からの遠近の箇所における明暗の差を少なくできる内照式表示システムを提供せんとするものである。
【0007】
【課題を解決するための手段】
上記課題を解決するため、本発明は以下のような構成としている。すなわち、本発明に係わる内照式表示システムは、導光部の端部に、発光ダイオードが光源として配設されてなる内照式表示システムにおいて、光源が導光板の両端に相対向するようにそれぞれ設けられ、いずれか少なくとも一方の光源の周囲に、該光源と相対向する他方の光源からの光線を反射する反射手段が設けられたことを特徴とするものである。
【0008】
本発明によれば、光源が導光板の両端に相対向するようにそれぞれ設けられていることで、発光ダイオードが比較的間隔をおいて配置されていても、照明むらが生じる恐れが少なくなり、また光源からの遠近の箇所における光量のバランスを容易に採ることができる。更に一方の光源の周囲に、該光源と相対向する他方の光源からの光線を反射する反射手段が設けられていることで、反射手段により反射された光線により一方の光源近傍を内照でき、照明むらを軽減できる。
【0009】
反射手段は、直進してくる光源からの光線を内照に係わる光線に変換するものであり、鏡面や再帰反射体の如く光線を一方向へ反射するものより、反射シートや、白色や黄色、またはそれらに近い色の表面を有するものを用いるのが好ましい。また、光源として用いられる発光ダイオードは、赤、青、緑の3色を組み合わせた、白色又はそれに近い色調の光線を用いるのが好ましい。
【0010】
また導光板は、特に限定されるものではなく、例えば平板状の透明な合成樹脂やガラスなどの透光板の一面に、光学的に検討されたスクリーン、シルク等のドット印刷が施された光拡散シートが貼着されたり、乳白色の半透明のアクリル板等に着色を施したものを配置する等の方法で表示部を形成し、表示面と反対側の面に反射シートを貼着するにより反射部を形成したもの等の公知のものを用いてよい。また透光板には、反射拡散物質を混合したものを用いてもよい。
【0011】
また、前記少なくとも一方の光源は、前記反射手段と一体化され、導光板に対して着脱可能となされたことを特徴とするものである。
【0012】
【発明の実施の形態】
本発明の実施の形態について、図面に基づき以下に具体的に説明する。
図1〜図3は、本発明に係わる内照式表示システムの実施の一形態を示すもので、図1は斜視図、図2は断面図、図3は光源部の詳細を示す説明図である。図1において、内照式表示システム10は、導光板1により表示を行うもので、導光板1の周囲には枠体4が形成されて、内照式表示システム10の剛性を高めるようになされている。
【0013】
図1のA−A断面を図2に示すが、導光板1は、透光板11の表示面側αに表示部12を設け、表示部12と透光板を挟んで反対側に反射部13を設けたものである。かかる導光板1の端部から光線が入射されると、光線は透光板11を通過して直接、及び反射部13により反射されて表示部12を透過し、表示部12に描画された内容を内照により表示する。また、光源であるLED21をソケット22に固定して形成された光源部2は、導光板1の両端に相対向するように設けられ、一方の光源部2のLED21の周囲には、他方のLED21からの光線を反射する反射手段3が設けられている。
【0014】
透光板11は、透光性の高い透明な板状のものを用いるのが好ましく、ガラス、強化ガラスや、ポリカーボネート、ポリエチレンテレフタレート、ポリブチレンテレフタレート、アクリル樹脂等の合成樹脂を用いてよく、それらを単独で用いるか、又は複数を用いて混合物、積層物を形成して適用してもよい。表示部12は、ポリカーボネート、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレン、ポリエチレンナフタレート、ポリメタクリレート、ポリプロピレン、アクリル樹脂、ポリ塩化ビニル、ABS等の半透明の透光性を有する合成樹脂を板状やシート状にして、印刷や塗装等により着色して光学的に意匠を検討することで形成してよい。また反射部13は、フィルム状の合成樹脂に金属を蒸着したものや、光線反射率の高い白色や黄色又はそれに近い色のシートなどを用いてよい。
【0015】
枠体4は、背面板41及びカバー材42により形成され、背面板41は導光板1の背面全体に亘って一体となされ、導光板1は背面板41にボルト・ナットである締結手段T1により締結されている。更に背面板41は、導光板1の上下端付近からボックス状に折り曲げ加工され、枠体4としての強度を高めると共に、光源や配線を挿通するスペースを確保している。
【0016】
背面板41の、ボックス状となされた端部には光源部2がボルト・ナットである締結手段T2により取り付けられ、更にカバー材42が、光源部2及び締結手段T1を隠すように、ねじである締結手段T3により取り付けられている。
【0017】
かかる構造により、導光板1は背面板41により支持され、風荷重等による外力による破損や変形の恐れを小さくできる。また、光源部2及び締結手段T1がカバー材42により隠されていることで、光源部2が雨水等から保護されると共に、外観をすっきりしたものとできる。更には内照式表示システム10の表示面側αと反対側が壁面に固着されていても、締結手段T3を外してカバー材42を取り外した後、締結手段T2を外して反射手段3と一体化された光源部2が着脱可能となされていることで、LEDの交換や汚染物質の除去等のメンテナンスを容易に行うことができる。
【0018】
背面板41は、ボックス状に曲げ加工するのが容易で、また強度が高く内照式表示システム10全体の剛性の向上に寄与できる金属を用いて形成するのが好ましく、鉄鋼板、アルミニウム板、ステンレス板等が好適である。カバー材42を形成するのに用いられる材質は特に限定されるものではなく、金属、合成樹脂等を適宜用いて形成してよい。
【0019】
図2に示した光源部2周辺の詳細を示すのが図3であり、イ)において、図示したLED21と相対向するLED21から発光され、直進してきた光線B1は、LED21の周辺に設けられた反射手段3により反射されて散乱光B2となり、表示部12を内照する光線に変換される。方向aからの光源部2がロ)に示すもので、等間隔に複数配列されたLED21の周囲の、全周に亘って反射手段3が設けられており、LED21の光線の放射を妨げることなく反射手段3が設けられている。
【0020】
本実施形態に示す内照式表示システムによれば、LED21が導光板1の両端に相対向するように設けられていることで、LED21が比較的間隔をおいて配置されていても、一方の導光板1の端部に配置した場合と較べ、照明むらが生じる恐れが少なくなる。またLED21が両端から導光板1に光線を入射することで、遠近の箇所における光量のバランスを容易に採ることができる。従って、導光板1が比較的大型なものとなっても好適に適用することができる。
【0021】
更に、一方のLED21の周囲に、他方のLED21からの光線を反射する反射手段3が設けられていることで、反射手段3により反射された光線により、光量がすくなくなりがちである一方のLED21近傍を内照でき、照明むらを軽減できる。
【0022】
また、導光板1の背面全体に亘って設けられた背面板41により、導光板1の変形や破損の恐れが小さくなされると共に、内照式表示システム10全体での剛性も向上される。更に、LED21について、交換や汚染物質の除去といったメンテナンスの必要が生じた場合でも、光源部2と反射手段3が一体化され着脱可能となされていることで、内照式表示システム10全体を取り外す必要がなく、締結手段T2、T3を外すことで容易に行うことができる。
【0023】
【発明の効果】
本発明によれば、光源が導光板の両端に相対向するように設けられていることで、発光ダイオードが比較的間隔をおいて配置されていても、照明むらが生じる恐れが少なくなり、また光源からの遠近の箇所における光量のバランスを容易に採ることができる。更に一方の光源の周囲に、他方の光源からの光線を反射する反射手段が設けられていることで、反射手段により反射された光線により一方の光源近傍を内照でき、照明むらを軽減できる。
【図面の簡単な説明】
【図1】本発明に係わる内照式表示システムの、実施の一形態を示す斜視図である。
【図2】図1のA−A断面図である。
【図3】図2の、光源部周辺の詳細を示す断面図及び正面図である。
【符号の説明】
1 導光板
11 透光板
12 表示部
13 反射部
2 光源部
21 LED
22 ソケット
3 反射手段
4 枠体
41 背面板
42 カバー材
10 内照式表示システム
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an edge-light type internally illuminated display system using a light emitting diode as a light source.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a liquid crystal display device used indoors, a display device in which a light source is disposed on an end surface of a transparent plate having a diffuse reflection surface on one surface is known. Further, as an edge-light type internally illuminated display system using a light emitting diode (hereinafter, referred to as an LED) as a light source, for example, in Patent Document 1, a plurality of through holes formed in a light source support having a U-shaped cross section are disclosed. A surface emitting device in which an LED is mounted in a hole is disclosed. Such a surface light emitting device has an advantage that the life of the light source is long and the maintenance is extremely easy by using the LED.
[0003]
[Patent Document 1]
JP 2000-338908 A
[Problems to be solved by the invention]
However, LEDs have higher directivity of light rays than fluorescent lamps and the like, and an internally illuminated display system using LEDs as a light source tends to cause uneven illumination between light sources. In order to reduce such uneven illumination, for example, as described in Patent Literature 1, LEDs have to be arranged at equal intervals as narrow as 6 mm.
[0005]
Further, as described above, since the LED has a high directivity of light, it is difficult to balance the light amount between a portion near the light source and a portion far from the light source, and the brightness of either one tends to be remarkable. Was something.
[0006]
The present invention has been made in view of such a problem, and has an internal-illuminated display system capable of reducing illumination unevenness at a relatively wide LED arrangement interval and reducing a difference in brightness at a location near and far from a light source. It will not be provided.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, in the internally illuminated display system according to the present invention, in the internally illuminated display system in which a light emitting diode is provided as a light source at an end of the light guide unit, the light source is opposed to both ends of the light guide plate. A reflecting means is provided around each of at least one of the light sources, and reflecting means for reflecting a light beam from the other light source facing the light source.
[0008]
According to the present invention, since the light sources are provided at both ends of the light guide plate so as to face each other, even if the light-emitting diodes are arranged at relatively intervals, the possibility of uneven illumination is reduced, Further, it is possible to easily balance the amount of light at a position near and far from the light source. Further, around one light source, by providing a reflecting means for reflecting light from the other light source facing the light source, the light reflected by the reflecting means can be internally illuminated near one light source, Lighting unevenness can be reduced.
[0009]
Reflecting means is to convert the light from the light source that goes straight on into light related to internal illumination, and to reflect light in one direction such as a mirror surface or retroreflector, a reflecting sheet, white or yellow, Alternatively, it is preferable to use one having a surface of a color close to them. Further, it is preferable that the light emitting diode used as the light source use a light ray having a color tone of white or a color close to white, which is a combination of three colors of red, blue and green.
[0010]
The light guide plate is not particularly limited. For example, an optically studied screen or light printed on a dot such as silk is printed on one surface of a transparent plate made of a transparent synthetic resin or glass. A diffusion sheet is attached, or a display part is formed by a method such as arranging a colored substance on a milky white translucent acrylic plate or the like, and by attaching a reflection sheet to a surface opposite to the display surface. A known member such as a member having a reflecting portion may be used. Further, the light-transmitting plate may be a mixture of a reflection and diffusion material.
[0011]
Further, the at least one light source is integrated with the reflection means, and is detachable from the light guide plate.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings.
1 to 3 show an embodiment of an internally illuminated display system according to the present invention. FIG. 1 is a perspective view, FIG. 2 is a sectional view, and FIG. 3 is an explanatory view showing details of a light source unit. is there. In FIG. 1, an internally illuminated display system 10 performs display using a light guide plate 1, and a frame 4 is formed around the light guide plate 1 so as to increase the rigidity of the internally illuminated display system 10. ing.
[0013]
FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1. The light guide plate 1 has a display unit 12 on the display surface side α of the light transmission plate 11 and a reflection unit on the opposite side of the display unit 12 with the light transmission plate therebetween. 13 is provided. When a light beam enters from an end of the light guide plate 1, the light beam passes directly through the light-transmitting plate 11, is reflected by the reflection unit 13, passes through the display unit 12, and is drawn on the display unit 12. Is displayed by internal illumination. A light source unit 2 formed by fixing an LED 21 as a light source to a socket 22 is provided at both ends of the light guide plate 1 so as to face each other. There is provided a reflection means 3 for reflecting light rays from the light source.
[0014]
The light-transmitting plate 11 is preferably a transparent plate having high light-transmitting properties, and may be glass, tempered glass, or a synthetic resin such as polycarbonate, polyethylene terephthalate, polybutylene terephthalate, or an acrylic resin. May be used alone, or a mixture or a laminate may be formed using a plurality of them and applied. The display unit 12 is made of a translucent translucent synthetic resin such as polycarbonate, polyethylene terephthalate, polybutylene terephthalate, polyethylene, polyethylene naphthalate, polymethacrylate, polypropylene, acrylic resin, polyvinyl chloride, and ABS, in the form of a plate or sheet. It may be formed by examining the design optically by coloring it by printing, painting, or the like. The reflecting portion 13 may be formed by depositing metal on a film-like synthetic resin, or by using a sheet of white or yellow having a high light reflectance or a color close thereto.
[0015]
The frame body 4 is formed by a back plate 41 and a cover member 42. The back plate 41 is integrated over the entire back surface of the light guide plate 1, and the light guide plate 1 is attached to the back plate 41 by fastening means T1 which is a bolt and a nut. Has been concluded. Further, the rear plate 41 is bent into a box shape from the vicinity of the upper and lower ends of the light guide plate 1 to increase the strength of the frame body 4 and secure a space for inserting a light source and wiring.
[0016]
The light source unit 2 is attached to a box-shaped end of the back plate 41 by fastening means T2 which is a bolt and a nut. Further, the cover member 42 is screwed so as to hide the light source unit 2 and the fastening means T1. It is attached by a certain fastening means T3.
[0017]
With this structure, the light guide plate 1 is supported by the back plate 41, and the risk of damage or deformation due to external force due to wind load or the like can be reduced. Further, since the light source unit 2 and the fastening means T1 are hidden by the cover member 42, the light source unit 2 is protected from rainwater and the like, and the appearance can be reduced. Furthermore, even if the side opposite to the display surface side α of the internally illuminated display system 10 is fixed to the wall surface, after the fastening means T3 is removed and the cover member 42 is removed, the fastening means T2 is removed and the reflection means 3 is integrated. Since the light source unit 2 is detachable, maintenance such as replacement of the LED and removal of contaminants can be easily performed.
[0018]
The back plate 41 is preferably formed of a metal that can be easily bent into a box shape and that has high strength and can contribute to improvement in the rigidity of the entire internally illuminated display system 10. A stainless plate or the like is suitable. The material used to form the cover member 42 is not particularly limited, and may be formed by appropriately using metal, synthetic resin, or the like.
[0019]
FIG. 3 shows details of the periphery of the light source unit 2 shown in FIG. 2. In FIG. 3A, the light beam B1 emitted from the LED 21 facing the illustrated LED 21 and traveling straight is provided around the LED 21. The light is reflected by the reflecting means 3 to be scattered light B <b> 2, and is converted into a light ray that illuminates the display unit 12. The light source unit 2 from the direction a is shown in (b), and the reflecting means 3 is provided over the entire periphery of the LEDs 21 arranged at equal intervals, without obstructing the emission of light rays from the LEDs 21. Reflecting means 3 is provided.
[0020]
According to the internally illuminated display system shown in the present embodiment, since the LEDs 21 are provided at both ends of the light guide plate 1 so as to oppose each other, even if the LEDs 21 are relatively spaced, As compared with the case where the light guide plate 1 is arranged at the end, the possibility of uneven illumination is reduced. In addition, since the LED 21 emits light beams to the light guide plate 1 from both ends, it is possible to easily balance the amount of light at a distance. Therefore, even if the light guide plate 1 becomes relatively large, it can be suitably applied.
[0021]
Further, since the reflecting means 3 for reflecting the light beam from the other LED 21 is provided around one LED 21, the light reflected by the reflecting means 3 causes the light amount to be reduced near the one LED 21. Can be internally illuminated, and uneven lighting can be reduced.
[0022]
In addition, the rear plate 41 provided over the entire rear surface of the light guide plate 1 reduces the risk of deformation and breakage of the light guide plate 1 and improves the rigidity of the entire internally illuminated display system 10. Further, even when maintenance such as replacement or removal of contaminants is required for the LED 21, the entire light source display system 10 is removed by integrating the light source unit 2 and the reflection means 3 so as to be detachable. It is not necessary, and can be easily performed by removing the fastening means T2 and T3.
[0023]
【The invention's effect】
According to the present invention, since the light sources are provided at both ends of the light guide plate so as to face each other, even if the light-emitting diodes are arranged at a relatively large interval, the possibility of uneven illumination is reduced, and It is possible to easily balance the amount of light at a position near and far from the light source. Further, since the reflection means for reflecting the light from the other light source is provided around one of the light sources, the vicinity of the one light source can be internally illuminated by the light reflected by the reflection means, thereby reducing illumination unevenness.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an internally illuminated display system according to the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
3A and 3B are a cross-sectional view and a front view showing details around a light source unit in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Light guide plate 11 Translucent plate 12 Display part 13 Reflection part 2 Light source part 21 LED
22 socket 3 reflection means 4 frame 41 back plate 42 cover material 10 internally illuminated display system

Claims (2)

導光部の端部に、発光ダイオードが光源として配設されてなる内照式表示システムにおいて、光源が導光板の両端に相対向するようにそれぞれ設けられ、いずれか少なくとも一方の光源の周囲に、該光源と相対向する他方の光源からの光線を反射する反射手段が設けられたことを特徴とする内照式表示システム。In an end-lit display system in which a light-emitting diode is provided as a light source at an end of the light guide unit, the light sources are provided so as to face both ends of the light guide plate, respectively, and are provided around at least one of the light sources. And a reflection means for reflecting a light beam from the other light source opposed to the light source. 前記少なくとも一方の光源は、前記反射手段と一体化され、導光板に対して着脱可能となされたことを特徴とする請求項1に記載の内照式表示システム。The internal light type display system according to claim 1, wherein the at least one light source is integrated with the reflection means, and is detachable from the light guide plate.
JP2002320679A 2002-11-05 2002-11-05 Internally lighting type display system Pending JP2004157204A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006278249A (en) * 2005-03-30 2006-10-12 Nec Personal Products Co Ltd Illumination device
JP2009047916A (en) * 2007-08-20 2009-03-05 Meitaku Kogyo Kk Display device
JP2010067832A (en) * 2008-09-11 2010-03-25 Sharp Corp Light emitting module
KR100966734B1 (en) 2008-04-30 2010-06-29 쌍용자동차 주식회사 door-ramp for a automobile
JP2010225292A (en) * 2009-03-19 2010-10-07 Mitsubishi Rayon Co Ltd Surface light source device, and display device using the same
JP2012133921A (en) * 2010-12-20 2012-07-12 Panasonic Corp Lighting fixture
JP2012247554A (en) * 2011-05-26 2012-12-13 Showa Front Kk Display device and maintenance method of display device
JP2015528990A (en) * 2012-07-23 2015-10-01 サン−ゴバン グラス フランス Lighting partition
JP6022101B1 (en) * 2016-07-04 2016-11-09 有限会社エーユー建築工房 Display device
CN108020884A (en) * 2018-01-18 2018-05-11 合肥泰沃达智能装备有限公司 A kind of novel glass light guide plate and preparation method thereof

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006278249A (en) * 2005-03-30 2006-10-12 Nec Personal Products Co Ltd Illumination device
JP2009047916A (en) * 2007-08-20 2009-03-05 Meitaku Kogyo Kk Display device
JP4520494B2 (en) * 2007-08-20 2010-08-04 明拓工業株式会社 Display device
KR100966734B1 (en) 2008-04-30 2010-06-29 쌍용자동차 주식회사 door-ramp for a automobile
JP2010067832A (en) * 2008-09-11 2010-03-25 Sharp Corp Light emitting module
JP2010225292A (en) * 2009-03-19 2010-10-07 Mitsubishi Rayon Co Ltd Surface light source device, and display device using the same
JP2012133921A (en) * 2010-12-20 2012-07-12 Panasonic Corp Lighting fixture
JP2012247554A (en) * 2011-05-26 2012-12-13 Showa Front Kk Display device and maintenance method of display device
JP2015528990A (en) * 2012-07-23 2015-10-01 サン−ゴバン グラス フランス Lighting partition
JP6022101B1 (en) * 2016-07-04 2016-11-09 有限会社エーユー建築工房 Display device
WO2018008173A1 (en) * 2016-07-04 2018-01-11 有限会社エーユー建築工房 Display device
CN107578716A (en) * 2016-07-04 2018-01-12 有限公司Au建筑工作室 Display device
US10553136B2 (en) 2016-07-04 2020-02-04 Yugen Kaisha Au Architecture Studio Display apparatus
CN108020884A (en) * 2018-01-18 2018-05-11 合肥泰沃达智能装备有限公司 A kind of novel glass light guide plate and preparation method thereof

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