JPH0354982U

JPH0354982U -

Info

Publication number: JPH0354982U
Application number: JP11699989U
Authority: JP
Priority date: 1989-10-03
Filing date: 1989-10-03
Publication date: 1991-05-28

Description

[Brief explanation of drawings]

第１図は本考案第一実施例の平面光源装置の分
解斜視図、第２図は同じくその断面図、第３図は
同じく光源からの光が導光シートにより反射およ
び透過される状態を示す斜視図、第４図は第３図
の要部拡大図、第５図は本考案第二実施例の平面
光源装置の断面図、第６図は同じくその分解斜視
図、第７図は本考案第三実施例の平面光源装置の
断面図、第８図は同じくその分解斜視図、第９図
は従来の直下型平面光源装置を示す斜視図、第１
０図は同じくエツジライト方式平面光源装置を示
す斜視図である。１１……光源、１２……保持体、１３……拡散
板、１４……反射板、１５……導光室、１６，１
７……導光シート、１６ａ，１７ａ……プリズム
、２２……ライテイングカーテン、３３……第一
光源用導光シート、３４……第二光源用導光シー
ト。 FIG. 1 is an exploded perspective view of a flat light source device according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is a diagram showing how light from a light source is reflected and transmitted by a light guide sheet. 4 is an enlarged view of the main part of FIG. 3, FIG. 5 is a sectional view of the flat light source device according to the second embodiment of the present invention, FIG. 6 is an exploded perspective view thereof, and FIG. FIG. 8 is an exploded perspective view of the flat light source device of the third embodiment; FIG. 9 is a perspective view of a conventional direct type flat light source device;
FIG. 0 is a perspective view of the edge light type flat light source device. 11... Light source, 12... Holder, 13... Diffusion plate, 14... Reflection plate, 15... Light guiding chamber, 16,1
7... Light guide sheet, 16a, 17a... Prism, 22... Lighting curtain, 33... Light guide sheet for first light source, 34... Light guide sheet for second light source.

Claims

[Scope of utility model registration request]

A flat light source device comprising a light source, a holder that holds the light source, a diffuser plate that diffuses and emits light from the light source, and a reflector plate that reflects light from the light source onto the diffuser plate, wherein the diffuser plate and Reflector plates are arranged in parallel at regular intervals, the light source and the holder are arranged at the ends of the diffuser plate and the reflector plate, and the holder, the diffuser plate and the reflector plate guide light from the light source to the diffuser plate. 1. A planar light source device, wherein a hollow light guide chamber is formed, and a light guide sheet that reflects and transmits light from the light source is arranged on the light guide chamber side surfaces of the diffusion plate and the reflection plate.