JPS6318040Y2 - - Google Patents
Info
- Publication number
- JPS6318040Y2 JPS6318040Y2 JP1981083686U JP8368681U JPS6318040Y2 JP S6318040 Y2 JPS6318040 Y2 JP S6318040Y2 JP 1981083686 U JP1981083686 U JP 1981083686U JP 8368681 U JP8368681 U JP 8368681U JP S6318040 Y2 JPS6318040 Y2 JP S6318040Y2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light
- guide plate
- light guide
- crystal panel
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims description 15
- 239000003973 paint Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【考案の詳細な説明】
本考案は透過型液晶パネルの背面に光誘導板を
付した液晶表示装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid crystal display device in which a light guide plate is attached to the back side of a transmissive liquid crystal panel.
従来、自動車内に設置された各種メータ等の情
報を表示するためランプやLED等の表示装置が
取り付けられているが、これらの自発光表示装置
は外部太陽光が強い時は点灯位置や表示数値等の
視認が困難であるという欠点があつた。 Conventionally, display devices such as lamps and LEDs have been installed to display information on various meters installed in automobiles, but these self-luminous display devices do not change the lighting position or display value when sunlight is strong outside. The disadvantage was that it was difficult to visually recognize the
上記のような欠点に対して液晶表示装置は太陽
光が強い場合にも上記のような欠点はなくまた消
費電力も少ないという利点があり表示装置として
非常に好都合である。しかし、この種の液晶表示
装置は外部光を必要とする特性があり、車輌に取
り付けた場合、車輌が常に明るい環境の下に走行
しているとは限らず、従つて外部光を導入するこ
とが必要となる。 In contrast to the above-mentioned drawbacks, liquid crystal display devices do not have the above-mentioned drawbacks even when sunlight is strong and have the advantage of low power consumption, making them very convenient as display devices. However, this type of liquid crystal display device requires external light, and when installed in a vehicle, the vehicle is not always running in a bright environment, so it is necessary to introduce external light. Is required.
本考案は上記のような車輌用液晶表示装置の問
題点に鑑みてなされたもので、光誘導板（アクリ
ル樹脂等）を透過型液晶パネルの背面に付し太陽
光を表示に利用することを目的とする。 The present invention was developed in view of the above-mentioned problems with liquid crystal display devices for vehicles, and it is a method of attaching a light guiding plate (acrylic resin, etc.) to the back of a transmissive liquid crystal panel to utilize sunlight for display purposes. purpose.
図面を用いて本考案の一実施例を詳細に説明す
る。図において走行距離、ガソリン量等の各種車
輌情報を表示させるための透過型液晶パネル１が
運転席前面の操作パネル部に取り付けられてい
る。この透過型液晶パネル１の背部に光誘導板２
の板体壁を取り付けている。この光誘導板２の他
端は外部の太陽光を受け入れることが可能な位
置、例えば窓ぎわ或いは車体外壁まで延長して設
けられている。 An embodiment of the present invention will be described in detail using the drawings. In the figure, a transmissive liquid crystal panel 1 for displaying various vehicle information such as mileage, amount of gasoline, etc. is attached to an operation panel section in front of the driver's seat. A light guide plate 2 is attached to the back of this transmissive liquid crystal panel 1.
A board wall is being installed. The other end of the light guiding plate 2 is provided extending to a position where external sunlight can be received, such as a window or an outer wall of the vehicle body.
上記光誘導板２に入射された外部太陽光を効率
良く利用するため、光誘導板２から液晶パネル１
に光を導く結合部に半透明白色塗料層３と、光誘
導板２の相対する面に光が外部へもれるのを防ぐ
反射板４を付け加えてある。 In order to efficiently utilize the external sunlight incident on the light guide plate 2, the light guide plate 2 is connected to the liquid crystal panel 1.
A translucent white paint layer 3 is added to the connecting portion that guides light to the light guide plate 2, and a reflecting plate 4 that prevents light from leaking to the outside is added to the opposing surface of the light guide plate 2.
上記構造において太陽光が光誘導板２を通過し
て液晶パネル１背面まで到達し、該パネル１を通
過することで表示作用を行う。 In the above structure, sunlight passes through the light guide plate 2 and reaches the back surface of the liquid crystal panel 1, and by passing through the panel 1, a display effect is performed.
なお、外部太陽光を利用できないときは光誘導
板２に対向させて配置された内部光源５を使用す
る。内部光源５は光誘導板２を光源位置まで延長
させることにより車内に設けられた他の光源を併
用することができる。 Note that when external sunlight cannot be used, an internal light source 5 placed opposite the light guide plate 2 is used. The internal light source 5 can be used together with other light sources provided inside the vehicle by extending the light guide plate 2 to the light source position.
また、上記光源５としてEL（エレクトロルミネ
ツセンス）を用いることもでき、光誘導板２に導
かれた外部光の光量を検定して、EL印加電圧を
制御し、外部光量に応じたEL発光を行わせて、
全体として液晶パネル１の入射される光量を一定
に保ち、常に一定の表示品位が保たれるよう動作
させることもできる。 In addition, EL (electroluminescence) can be used as the light source 5, and the amount of external light guided to the light guide plate 2 is verified, the EL applied voltage is controlled, and EL emits light according to the amount of external light. let me do it,
It is also possible to keep the amount of light incident on the liquid crystal panel 1 constant as a whole, and to operate so that a constant display quality is always maintained.
以上のように光誘導板を用いて太陽光を導くこ
とにより、外部太陽光の強弱の変化に応じて液晶
パネルへの入射光量を変化させることができ、車
内の明るさに対応して液晶パネルが照明されるた
め視認性の高い表示が得られ、さらに電力が節減
できる効果がある。 By guiding sunlight using the light guide plate as described above, it is possible to change the amount of light incident on the LCD panel according to changes in the strength of external sunlight, and the LCD panel can adjust according to the brightness inside the car. Since the display is illuminated, a highly visible display can be obtained, which also has the effect of reducing power consumption.
図は本考案の一実施例における断面図である。
１……透過型液晶パネル、２……光誘導板、３
……白色塗料層、４……反射板、５……自発光素
子。
The figure is a sectional view of one embodiment of the present invention. 1... Transmissive liquid crystal panel, 2... Light guide plate, 3
...white paint layer, 4...reflector, 5...self-luminous element.
Claims (1)
前記液晶パネルの背面部から外部光入射位置まで
延長して形成された外部光の導入部を有する光誘
導板と、該光誘導板の他端に自発光素子を備えて
なる透過型液晶表示パネル。 A light guide plate that corresponds to the back surface of the liquid crystal panel and has an external light introduction part formed at one end extending from the back surface of the liquid crystal panel to the external light incident position; A transmissive liquid crystal display panel equipped with a light emitting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981083686U JPS6318040Y2 (en) | 1981-06-05 | 1981-06-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981083686U JPS6318040Y2 (en) | 1981-06-05 | 1981-06-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57195175U JPS57195175U (en) | 1982-12-10 |
| JPS6318040Y2 true JPS6318040Y2 (en) | 1988-05-20 |
Family
ID=29879091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981083686U Expired JPS6318040Y2 (en) | 1981-06-05 | 1981-06-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6318040Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094605U (en) * | 1983-12-02 | 1985-06-27 | セイコーエプソン株式会社 | Transparent display device |
| JPH0326498Y2 (en) * | 1986-09-16 | 1991-06-07 | ||
| JPH11212092A (en) * | 1998-01-23 | 1999-08-06 | Kawaguchiko Seimitsu Kk | Liquid crystal display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51140594A (en) * | 1975-05-30 | 1976-12-03 | Casio Comput Co Ltd | Crystalline liquid indicating equipment |
-
1981
- 1981-06-05 JP JP1981083686U patent/JPS6318040Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51140594A (en) * | 1975-05-30 | 1976-12-03 | Casio Comput Co Ltd | Crystalline liquid indicating equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57195175U (en) | 1982-12-10 |
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