LIGHT GUIDE PLATE UNIT AND LIGHTING APPARATUS USING THE LIGHT GUIDE PLATE UNIT

Title:

LIGHT GUIDE PLATE UNIT AND LIGHTING APPARATUS USING THE LIGHT GUIDE PLATE UNIT

Document Type and Number:

WIPO Patent Application WO/2010/004610

Kind Code:

A1

Abstract:

A light guide plate unit enabling realization of light distribution suitable for spatial illumination and having excellent maintainability is provided. The light guide plate unit comprises a light source unit (14) for forming a linear light source constituted by arranging point light sources approximately linearly and a light guide plate (16) having at least an entrance end surface through which light from the light source unit enters, an exit surface which is nearly orthogonal to the entrance end surface and from which the light which has entered through the entrance end surface exits, and a reflection surface which is disposed opposite to the emission surface and on which a light scattering pattern is formed. The light scattering pattern of the light guide plate is formed denser in a nearly central region of the emission surface than in a peripheral region of the emission surface.

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Inventors:

MURASE SHINZO (JP)

Application Number:

PCT/JP2008/062286

Publication Date:

January 14, 2010

Filing Date:

July 07, 2008

Export Citation:

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Assignee:

KIRYU CO LTD (JP)
MURASE SHINZO (JP)

International Classes:

F21V19/00; F21V8/00; F21Y101/02

Domestic Patent References:

WO2005012787A1

2005-02-10

Foreign References:

JP2007087659A	2007-04-05
JP2004311098A	2004-11-04
JP2004354825A	2004-12-16
JPS6170306U	1986-05-14
JPS61183006U	1986-11-14
JPH06222723A	1994-08-12