US 11,841,528 B2
Linear light-emitting device
Takumi Miyashita, Fujiyoshida (JP); Ryo Tamura, Yamanashi (JP); Takahiro Shimizu, Fujiyoshida (JP); Takuma Horiuchi, Otsuki (JP); and Ryo Matsuura, Yamanashi (JP)
Assigned to Citizen Electronics Co., Ltd., Fujiyoshida (JP); and Citizen Watch Co., Ltd., Nishitokyo (JP)
Appl. No. 17/622,681
Filed by CITIZEN ELECTRONICS CO., LTD., Fujiyoshida (JP); and CITIZEN WATCH CO., LTD., Tokyo (JP)
PCT Filed Jun. 25, 2020, PCT No. PCT/JP2020/025088
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/262552, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-117746 (JP), filed on Jun. 25, 2019.
Prior Publication US 2022/0252777 A1, Aug. 11, 2022
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/009 (2013.01) [G02B 6/0068 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A linear light-emitting device comprising:
a substrate having a planar mounting region and extending in a predetermined direction;
a plurality of light-emitting elements arranged on the mounting region of the substrate in a predetermined direction; and
a seal for integrally sealing the plurality of light-emitting elements,
wherein a luminance of a specific part of the substrate is higher than that of other parts of the substrate, and
wherein the plurality of light-emitting elements are arranged, in a region separated from an end of a linear light-emitter, so that their optical axis will match that of a light guide plate, and are arranged, in a region adjacent to the end of the linear light-emitter, so that their optical axis will be arranged deviated from that of the light guide plate in a height direction of a light incident surface.