Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/013672
Kind Code:
A1
Abstract:
A lighting device (1) is provided with a long flat board (2), semiconductor light sources (3) arranged on the flat board in the longitudinal direction thereof, and also with a lens plate (4) located at a position facing the semiconductor light sources.  The lens plate has a lens-light entrance surface facing the semiconductor light sources and also has a lens-light exit surface.  Either the lens-light entrance surface or the lens-light exit surface is provided with first lens sections (5) for distributing, in the longitudinal direction, light from the semiconductor light sources.  The other is provided with a second lens section (9) for distributing, in the lateral direction, the light from the semiconductor light sources.  The first lens sections are each provided with a curvature surface unit (8) composed of two or more convex curvature surfaces having different curvature radiuses and arranged adjacent to each other in the longitudinal direction, and the curvature surface unit (8) is provided on the inner side of that region of the lens plate which faces that region of a semiconductor light source which corresponds to the width of semiconductor light source in the longitudinal direction.

Inventors:
KATO Masaru (491-100 Oka, Kaminaka-cho, Anan-sh, Tokushima 01, 〒7748601, JP)
加藤 勝 (〒01 徳島県阿南市上中町岡491番地100 日亜化学工業株式会社内 Tokushima, 〒7748601, JP)
Application Number:
JP2009/063343
Publication Date:
February 04, 2010
Filing Date:
July 27, 2009
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NICHIA CORPORATION (491-100, Oka Kaminaka-cho, Anan-sh, Tokushima 01, 〒7748601, JP)
日亜化学工業株式会社 (〒01 徳島県阿南市上中町岡491番地100 Tokushima, 〒7748601, JP)
KOITO INDUSTRIES, LTD. (100 Maeda-cho, Totsuka-ku Yokohama-sh, Kanagawa 69, 〒2448569, JP)
小糸工業株式会社 (〒69 神奈川県横浜市戸塚区前田町100番地 Kanagawa, 〒2448569, JP)
International Classes:
F21S8/08; F21V5/00; F21V5/04; F21V13/02; F21Y101/02
Foreign References:
JP2001052513A2001-02-23
JP2005174685A2005-06-30
JP2008108674A2008-05-08
JP2007311178A2007-11-29
JP2008084696A2008-04-10
Other References:
See also references of EP 2320127A4
Attorney, Agent or Firm:
ISONO Michizo (Sabo Kaikan Annex 7-4, Hirakawa-cho 2-chome, Chiyoda-k, Tokyo 93, 〒1020093, JP)
Download PDF: