JPH0449655Y2 - - Google Patents
Info
- Publication number
- JPH0449655Y2 JPH0449655Y2 JP13460487U JP13460487U JPH0449655Y2 JP H0449655 Y2 JPH0449655 Y2 JP H0449655Y2 JP 13460487 U JP13460487 U JP 13460487U JP 13460487 U JP13460487 U JP 13460487U JP H0449655 Y2 JPH0449655 Y2 JP H0449655Y2
- Authority
- JP
- Japan
- Prior art keywords
- light source
- light
- guide plate
- light guide
- case
- 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.)
- Expired
Links
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Instrument Panels (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は自動車、各種電気機器等に付設される
表示装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a display device attached to automobiles, various electrical devices, etc.
従来から導光板内に光源からの光を導入し、こ
の導光板から前方に出射する光により表示板の表
示部を照明するようにした表示装置としては種々
提案（例実開昭55−130377号公報）されている。
第４図および第５図はこの種の表示装置の従来例
を示すもので、１は前面が開放する左右方向に長
い箱形のケース、２はケース１の前面開口部を被
う表示板で、透光性の表示部３を有し、それ以外
の部分は遮光膜４によつて被われている。５はケ
ース１の背面より該ケース内に挿入された光源、
６はケース１内に配設された導光板で、この導光
板６の背面で前記光源５に対応する箇所には半球
状凹部からなる入光部（図示せず）が形成されて
おり、この入光部より導光板６の肉厚内に導入さ
れた前記光源５の光を、導光板６の背面に配設し
たリフレクタ７により前方に反射し、前記表示板
２の表示部３を明るく照明するようにしている。
リフレクタ７としては合成紙、合成樹脂等からな
る光反射性シートが使用される。前記導光板６の
前面、すなわち表示板２の裏面と密接する面で、
かつ前記光源５の近傍部分Ａには光の透過量を下
げるため透光性の塗料８が塗布され、これにより
表示板２の各表示部３の均一照明を図つている。
Conventionally, various proposals have been made for display devices in which light from a light source is introduced into a light guide plate, and the display portion of the display board is illuminated by the light emitted forward from the light guide plate (for example, in 1983-130377). Public notice).
Figures 4 and 5 show conventional examples of this type of display device. 1 is a box-shaped case that is long in the left and right direction with an open front, and 2 is a display plate that covers the front opening of case 1. , has a light-transmitting display section 3, and other parts are covered with a light-shielding film 4. 5 is a light source inserted into the case from the back side of the case 1;
Reference numeral 6 denotes a light guide plate disposed inside the case 1, and a light entrance part (not shown) consisting of a hemispherical recess is formed on the back surface of the light guide plate 6 at a location corresponding to the light source 5. The light from the light source 5 introduced into the thickness of the light guide plate 6 from the light entrance part is reflected forward by the reflector 7 arranged on the back surface of the light guide plate 6, and the display part 3 of the display plate 2 is brightly illuminated. I try to do that.
As the reflector 7, a light reflective sheet made of synthetic paper, synthetic resin, etc. is used. The front surface of the light guide plate 6, that is, the surface that is in close contact with the back surface of the display panel 2,
In addition, a transparent paint 8 is applied to a portion A near the light source 5 in order to reduce the amount of light transmitted, thereby achieving uniform illumination of each display section 3 of the display panel 2.
しかしながら、このような従来の表示装置にお
いては、導光板６の表面で光源５の近傍部分Ａに
わざわざ塗料８を施す必要があるため、導光板６
の製作工数が増加し、製造コストが高くつくとい
う問題点があつた。
However, in such a conventional display device, it is necessary to take the trouble to apply paint 8 to the area A near the light source 5 on the surface of the light guide plate 6.
The problem was that the number of manufacturing steps increased and the manufacturing cost became high.
したがつて、本考案では上記問題点を解決し、
簡単な構造にて光源近傍部の明るさを効果的に低
減し得、表示板全体を均一照明し得る表示装置を
提供しようとするものである。 Therefore, the present invention solves the above problems and
It is an object of the present invention to provide a display device that can effectively reduce brightness in the vicinity of a light source with a simple structure and uniformly illuminate the entire display panel.
本考案は上記目的を達成するために、ケース
と、透光性表示部を有して前記ケースの前面開口
部を被う表示部と、前記ケース内に配設された光
源と、同じく前記ケース内に配設され内部に導入
された前記光源からの光を前方へ出射する導光板
と、この導光板の裏面に配設された半透光半反射
性のシートとを備え、このシートの前記光源に対
応する部分に前記導光板の上端面、下端面もしく
は側端面を通つて該導光板の前面に延在し光源近
傍部を被う折り曲げ部を一体に設けたものであ
る。
In order to achieve the above object, the present invention includes a case, a display section having a translucent display section and covering the front opening of the case, a light source disposed inside the case, and a light source disposed inside the case. a light guide plate disposed inside the interior of the light source for emitting light from the light source introduced therein; and a semi-transparent and semi-reflective sheet disposed on the back surface of the light guide plate; A bent portion is integrally provided at a portion corresponding to the light source, extending to the front surface of the light guide plate through the upper end surface, lower end surface, or side end surface of the light guide plate, and covering a portion near the light source.
シートの折り曲げ部が光源から出てストレート
に前方に向う強い光の透過量を減少させる。
The folds in the sheet reduce the amount of strong light transmitted straight forward from the light source.
以下、本考案を図面に示す実施例に基づいて詳
細に説明する。
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
第１図は本考案に係る表示装置の一実施例を示
す第２図−線断面図、第２図は同表示装置の
正面図、第３図は半透光半反射性シートの斜視図
である。なお、図中第４図および第５図と同一構
成部品、部分に対しては同一符号を以つて示し、
その説明を省略する。これらの図において、１０
は導光板６の裏面略中央部に形成されためくら孔
からなる入光部で、この入光部１０に光源５が挿
入されている。１１は導光板６の裏面にほぼ全長
に亘つて延在する如く配置された半透光半反射性
シートで、このシート１１の前記光源５に対応す
る部分には導光板６の上端面を通つて該導光板６
の前面に延在に光源近傍部Ａを被う折り曲げ部１
２が一体に設けられている。１３は光源用孔であ
る。 Fig. 1 is a sectional view taken along the line shown in Fig. 2 showing an embodiment of the display device according to the present invention, Fig. 2 is a front view of the display device, and Fig. 3 is a perspective view of a semi-transparent semi-reflective sheet. be. In addition, the same components and parts as in FIGS. 4 and 5 are indicated by the same reference numerals.
The explanation will be omitted. In these figures, 10
1 is a light entrance section consisting of a blind hole formed approximately at the center of the back surface of the light guide plate 6, and the light source 5 is inserted into this light entrance section 10. Reference numeral 11 denotes a semi-transparent, semi-reflective sheet disposed on the back surface of the light guide plate 6 so as to extend over almost the entire length. The light guide plate 6
A bent portion 1 that extends to the front surface of the light source and covers the light source vicinity portion A.
2 are provided integrally. 13 is a hole for a light source.
このような構成からなる表示装置において、半
透光半反射性シート１１の折り曲げ部１２は、光
源５から出て前方に向う直射光の一部を後方に反
射して透過光量を減少させるため、光源近傍部Ａ
の表示部３の明るさを低下させる。この結果、光
源近傍部Ａの表示部３の明るさと、光源５から遠
い表示部３の明るさがほぼ等しくなり、表示装置
の視認性を向上させることができる。また、半透
光半反射性シート１１に光の透過量を制御する折
り曲げ部１２を設けるだけで、導光板６の表面に
は塗料を塗つたりする必要がなく、製作が簡単で
安価に提供することができるものである。 In a display device having such a configuration, the folded portion 12 of the semi-transparent semi-reflective sheet 11 reflects a portion of the direct light emitted from the light source 5 and directed forward, thereby reducing the amount of transmitted light. Light source vicinity A
The brightness of the display section 3 is reduced. As a result, the brightness of the display section 3 near the light source A and the brightness of the display section 3 far from the light source 5 become approximately equal, and visibility of the display device can be improved. In addition, by simply providing the bending portion 12 for controlling the amount of light transmission on the semi-transparent semi-reflective sheet 11, there is no need to apply paint to the surface of the light guide plate 6, making it easy to manufacture and inexpensive. It is something that can be done.
なお、上記実施例は光源５を１つ用いた表示装
置の場合について説明したが、本考案はこれに特
定されるものではなく、光源５を２つ以上使用す
るものであつてもよく、その場合各光源に対応し
て折り曲げ部を設ければよい。 In addition, although the above-mentioned embodiment explained the case of a display device using one light source 5, the present invention is not limited to this, and it is also possible to use two or more light sources 5. In this case, a bent portion may be provided corresponding to each light source.
以上説明したように本考案に係る表示装置によ
れば、導光板の裏面に半透光半反射性シートを配
置し、このシートの光源に対応する部分に導光板
表面側に延在し光源近傍部を被う折り曲げ部を一
体に設けたので、構造簡易にして光源から出た前
方に向う直射光の導光板を透過する透過量を効果
的に減少させることができ、表示板のすべての表
示部の均一照明を可能にする。また、シート自体
に折り曲げ部を設けるだけで、導光板等には何ら
の加工処理等を施す必要がなく、安価な表示装置
を実現し得るなど、その実用的効果は大である。
As explained above, according to the display device of the present invention, a semi-transparent semi-reflective sheet is arranged on the back surface of the light guide plate, and a part of the sheet corresponding to the light source extends toward the surface side of the light guide plate and is placed near the light source. Since the folded part that covers the entire display panel is integrated, the structure is simplified and the amount of direct light emitted from the light source that passes through the light guide plate can be effectively reduced. Enables uniform illumination of the area. Further, by simply providing the folded portion on the sheet itself, there is no need to perform any processing on the light guide plate, etc., and an inexpensive display device can be realized, which has great practical effects.
第１図は本考案に係る表示装置の一実施例を示
す第２図−線断面図、第２図は同表示装置の
正面図、第３図は半透光半反射性シートの斜視
図、第４図は表示装置の従来例を示す第５図−
線断面図、第５図は同表示装置の正面図であ
る。
１……ケース、２……表示板、３……表示部、
４……遮光膜、５……光源、６……導光板、１１
……半透光半反射性シート、１２……折り曲げ
部、Ａ……光源近傍部。
FIG. 1 is a sectional view taken along the line shown in FIG. 2 showing an embodiment of the display device according to the present invention, FIG. 2 is a front view of the display device, and FIG. 3 is a perspective view of a semi-transparent and semi-reflective sheet. Figure 4 is a diagram showing a conventional example of a display device.
The line sectional view and FIG. 5 are front views of the display device. 1... Case, 2... Display board, 3... Display section,
4... Light shielding film, 5... Light source, 6... Light guide plate, 11
... Semi-transparent semi-reflective sheet, 12 ... Folded portion, A ... Portion near the light source.
Claims (1)
前面開口部を被う表示板と、前記ケース内に配設
された光源と、同じく前記ケース内に配設され内
部に導入された前記光源からの光を前方へ出射す
る導光板と、この導光板の裏面に配設された半透
光半反射性シートとを備え、このシートの前記光
源に対応する部分には前記導光板の上端面、下端
面もしくは側端面を通つて該導光板の前面に延在
し光源近傍部を被う折り曲げ部が一体に設けられ
ていることを特徴とする表示装置。 a case, a display plate having a translucent display portion and covering the front opening of the case, a light source disposed within the case, and a light source disposed within the case and introduced into the interior. It is equipped with a light guide plate that emits light from a light source forward, and a semi-transparent semi-reflective sheet disposed on the back side of the light guide plate, and a portion of the sheet corresponding to the light source has a portion above the light guide plate. A display device characterized in that a bent portion is integrally provided that extends to the front surface of the light guide plate through an end surface, a lower end surface, or a side end surface and covers a portion near the light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13460487U JPH0449655Y2 (en) | 1987-09-04 | 1987-09-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13460487U JPH0449655Y2 (en) | 1987-09-04 | 1987-09-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440887U JPS6440887U (en) | 1989-03-10 |
| JPH0449655Y2 true JPH0449655Y2 (en) | 1992-11-24 |
Family
ID=31393514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13460487U Expired JPH0449655Y2 (en) | 1987-09-04 | 1987-09-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449655Y2 (en) |
-
1987
- 1987-09-04 JP JP13460487U patent/JPH0449655Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6440887U (en) | 1989-03-10 |
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