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Title:
LIGHT-EMITTING SURFACE MEMBER FOR STRAIGHT DOWN TYPE AND STRAIGHT DOWN TYPE LIGHT-EMITTING DEVICE
Document Type and Number:
Japanese Patent JP2005322524
Kind Code:
A
Abstract:

To provide a straight-down type light-emitting surface member, capable of increasing the luminance at a receiving surface, while suppressing the generation of lamp image.

A straight-down type light-emitting surface member 20 has a flat surface element portion 21, a receiving surface portion 22, and a light-emitting surface portion 23. The flat surface element portion 21 is designed so as to be formed by a transparent and colorless material. The light-emitting surface portion 23 is designed so as to form a plurality of convex ridges, having inclined planes (non-horizontal surfaces) 25a, 25b.


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Inventors:
HANIYU ATSUSHI
Application Number:
JP2004140030A
Publication Date:
November 17, 2005
Filing Date:
May 10, 2004
Export Citation:
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Assignee:
SUMITOMO RUBBER IND
International Classes:
G02F1/13357; F21S2/00; F21V8/00; G02B6/00; G02B27/00; F21Y103/00; (IPC1-7): F21S2/00; G02F1/13357
Domestic Patent References:
JPH1195013A1999-04-09
JPH1138207A1999-02-12
JPH06250178A1994-09-09
Foreign References:
US5161041A1992-11-03
Attorney, Agent or Firm:
Takafumi Watanabe
Hideki Kita
Hiroshi Sakamoto



 
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