JP2002040260A - Light guide plate - Google Patents
Light guide plateInfo
- Publication number
- JP2002040260A JP2002040260A JP2000224487A JP2000224487A JP2002040260A JP 2002040260 A JP2002040260 A JP 2002040260A JP 2000224487 A JP2000224487 A JP 2000224487A JP 2000224487 A JP2000224487 A JP 2000224487A JP 2002040260 A JP2002040260 A JP 2002040260A
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- light emitting
- semitranslucent
- 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
Links
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、列状に設けた複数
の発光素子からの光を導入する導光板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light guide plate for introducing light from a plurality of light emitting elements arranged in a row.
【０００２】[0002]
【従来の技術】列状に設けた複数の発光素子からの光を
導入する導光板では、導光板の一側面に多数の細かな筋
模様を形成するなどして反射面を形成し、その対向面と
なる光放出面から光を放出していた。2. Description of the Related Art In a light guide plate for introducing light from a plurality of light emitting elements arranged in a row, a reflective surface is formed by forming a large number of fine streaks on one side surface of the light guide plate, and the light guide plate is opposed to the reflective surface. Light was emitted from the light emitting surface, which was the surface.
【０００３】[0003]
【発明が解決しようとする課題】しかし、複数の発光素
子が点在しているため、導光板の光導入部付近において
光放出面に発光素子の光筋模様が視認される弊害があっ
た。本発明はこのような解決すべき課題を鑑み、導光板
の光導入部付近における光筋模様を緩和することを目的
とする。However, since a plurality of light emitting elements are interspersed, there is a problem that the optical streak pattern of the light emitting element is visually recognized on the light emitting surface near the light introducing portion of the light guide plate. The present invention has been made in view of such problems to be solved, and has as its object to alleviate a streak pattern in the vicinity of a light introducing portion of a light guide plate.
【０００４】[0004]
【課題を解決するための手段】請求項に示した通りであ
る。Means for solving the problems are as described in the claims.
【０００５】[0005]
【発明の実施の形態】次に、本発明の実施形態を説明す
るが、それはあくまで本発明に基づいて採択された例示
的な実施形態であり、本発明をその実施形態に特有な事
項に基づいて限定解釈してはならず、本発明の技術的範
囲は、請求項に示した事項さらにはその事項と実質的に
等価である事項に基づいて定めなければならない。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described. However, this is merely an exemplary embodiment adopted based on the present invention, and the present invention will be described based on matters unique to the embodiment. Therefore, the technical scope of the present invention should be determined based on the matters stated in the claims and matters substantially equivalent to the matters.
【０００６】図示の実施形態は、列状に設けた複数の発
光素子（例えば発光ダイオード）１からの光Ｌを導入す
る導光板２であって、導光板２の光導入部付近において
導光板２の光放出面に半透光面３を形成したものであ
る。導光板２はアクリル樹脂などの透明材で形成され、
半透光面３は、導光板２の表面を粗面加工して形成して
も、導光板２の表面に半透光性のテープを貼り付けて形
成してもよい。The illustrated embodiment is a light guide plate 2 for introducing light L from a plurality of light emitting elements (for example, light emitting diodes) 1 provided in a row, and the light guide plate 2 is provided near a light introducing portion of the light guide plate 2. In which a semi-transmissive surface 3 is formed on the light emitting surface. The light guide plate 2 is formed of a transparent material such as an acrylic resin,
The semi-transmissive surface 3 may be formed by roughening the surface of the light guide plate 2 or by attaching a semi-transparent tape to the surface of the light guide plate 2.
【０００７】さらに詳述すれば、導光板２の光放出面と
反対側の面には多数の細かな筋模様４が形成されて光反
射面が形成される。導光板２の光導入部面には複数の発
光素子１を収めた発光ユニット５が設けられ、発光ユニ
ット５は、透明材の背部に形成した溝６の底面に設けた
凹部７内に発光素子１が収められ、溝６の開口８に蓋９
をビス止めや接着などの適宜手段で取り付けたものであ
る。そして、発光素子１は基板１０に半田付けされ、基
板１０は溝６の中間段部１１と蓋９とで挟まれている。More specifically, on the surface of the light guide plate 2 opposite to the light emission surface, a number of fine streaks 4 are formed to form a light reflection surface. A light-emitting unit 5 containing a plurality of light-emitting elements 1 is provided on the light-introducing portion surface of the light guide plate 2, and the light-emitting unit 5 is provided in a recess 7 provided on the bottom surface of a groove 6 formed on the back of a transparent material. 1 is stored in the opening 8 of the groove 6
Are attached by appropriate means such as screwing or bonding. Then, the light emitting element 1 is soldered to the substrate 10, and the substrate 10 is sandwiched between the intermediate step 11 of the groove 6 and the lid 9.
【０００８】本実施形態によれば、導光板２の光導入部
付近において導光板２の光放出面に半透光面３を形成し
たため、導光板２の光導入部付近における光筋模様を緩
和でき、導光板２の光放出面の光量を略一様化すること
に寄与する。なお、半透光面３の光透過率を光導入部寄
りを低くするなど適当なグラデーションを付けてもよ
い。According to this embodiment, since the semi-transparent surface 3 is formed on the light emitting surface of the light guide plate 2 near the light introducing portion of the light guide plate 2, the light streak pattern near the light introducing portion of the light guide plate 2 is reduced. This contributes to making the amount of light on the light emitting surface of the light guide plate 2 substantially uniform. In addition, an appropriate gradation such as lowering the light transmittance of the semi-translucent surface 3 near the light introducing portion may be provided.
【図１】部分断面図FIG. 1 is a partial sectional view
【図２】簡略化して示した分解斜視図FIG. 2 is an exploded perspective view shown in a simplified manner.
１ 発光素子 Ｌ 光 ２ 導光板 ３ 半透光面 Reference Signs List 1 light emitting element L light 2 light guide plate 3 semi-transparent surface
Claims (1)
導入する導光板であって、光導入部付近において導光板
の光放出面に半透光面を形成した導光板。1. A light guide plate for introducing light from a plurality of light-emitting elements provided in a row, wherein the light guide plate has a semi-light-transmitting surface formed on a light-emitting surface of the light guide plate near a light introducing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000224487A JP2002040260A (en) | 2000-07-25 | 2000-07-25 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000224487A JP2002040260A (en) | 2000-07-25 | 2000-07-25 | Light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002040260A true JP2002040260A (en) | 2002-02-06 |
Family
ID=18718444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000224487A Pending JP2002040260A (en) | 2000-07-25 | 2000-07-25 | Light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002040260A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2253956A1 (en) * | 2002-12-04 | 2006-06-01 | Honda Motor Co., Ltd | Vehicle display device and light guide plate thereof |
| US7898613B2 (en) | 2005-11-16 | 2011-03-01 | Lg Display Co., Ltd. | Backlight unit and liquid crystal display device comprising light guide panel having prism patterns |
-
2000
- 2000-07-25 JP JP2000224487A patent/JP2002040260A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2253956A1 (en) * | 2002-12-04 | 2006-06-01 | Honda Motor Co., Ltd | Vehicle display device and light guide plate thereof |
| US7187270B2 (en) | 2002-12-04 | 2007-03-06 | Honda Motor Co., Ltd. | Vehicle display device and light guide plate thereof |
| US7898613B2 (en) | 2005-11-16 | 2011-03-01 | Lg Display Co., Ltd. | Backlight unit and liquid crystal display device comprising light guide panel having prism patterns |
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