LIGHT GUIDE PLATE AND LIGHT EMITTING DEVICE USING SAME

WIPO Patent Application WO/2022/264764

A1

The purpose of the present invention is to provide a light guide plate with which it is possible to prevent light unevenness and improve appearance, and a light emitting device using the same. A light guide plate (11) is provided with: a light incidence surface (12) on which light is incident; a light emission surface (13) which faces the light incidence surface (12) and from which light incident from the light incidence surface (12) is emitted; and a flat plate-shaped light guide member (14) which guides the light incident from the light incidence surface (12) to the light emission surface (13). The light guide member (14) has a widening part (16) that widens outward in a plate width direction from the light incidence surface (12) toward the light emission surface (13), and in a cross-section parallel to the light emission surface (13) on the light emission surface (13) side of the light guide member (14), the light guide member (14) has a larger plate thickness at least on one end side in the plate width direction on the side farther from the light incidence surface (12) than the plate thicknesses of the other portions.

JPH09318940	LIQUID CRYSTAL DISPLAY DEVICE
WO/2014/000369	BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY
JP6931812	Lighting device

KATAYAMA YASUO (JP)

PCT/JP2022/021335

December 22, 2022

May 25, 2022

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MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)

F21V8/00; B60Q3/14; B60Q3/64; F21Y115/10

JP2006066399A	2006-03-09
JP2020013707A	2020-01-23
JP2020155265A	2020-09-24
JP2006166378A	2006-06-22

FUJITA, Takaharu (JP)

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