公开(公告)号：US10816713B2

公开(公告)日：2020-10-27

申请号：US16467685

申请日：2018-02-27

Applicant: Omron Corporation

Inventor： Shinji Miyazaki ,  Kota Yonezawa ,  Masakazu Komano ,  Tetsuo Hayashi ,  Junichiro Tsuji ,  Daido Uchida ,  Koichi Takemura ,  Kazunori Harada ,  Takashi Onishi ,  Kazuhide Hirota ,  Kazuyuki Otake

IPC: G02F1/1333 ,  F21V8/00 ,  F21V29/503 ,  F21V29/508 ,  F21V29/85 ,  F21V29/70 ,  F21S2/00

Abstract: A surface light source device includes a light source; a light guide plate that has a light entrance surface through which light enters, and that emits the light entering through the light entrance surface from a light exit surface; a wiring board; and a metal frame. The metal frame includes a bottom portion having a bottom surface that faces a surface on an opposite side to the light exit surface, a side wall erected on an outer periphery of the bottom surface, and a projecting portion provided on the side wall so as to project toward the bottom surface side. The metal frame houses the light source, the light guide plate, and the wiring board. At least a part of the light source is disposed between the bottom portion and the projecting portion, and the wiring board is disposed between the light source and the bottom portion.

公开(公告)号：US20200064533A1

公开(公告)日：2020-02-27

申请号：US16467685

申请日：2018-02-27

Applicant: Omron Corporation

Inventor： Shinji Miyazaki ,  Kota Yonezawa ,  Masakazu Komano ,  Tetsuo Hayashi ,  Junichiro Tsuji ,  Daido Uchida ,  Koichi Takemura ,  Kazunori Harada ,  Takashi Onishi ,  Kazuhide Hirota ,  Kazuyuki Otake

IPC: F21V8/00 ,  G02F1/1333 ,  F21V29/503 ,  F21V29/70 ,  F21V29/508 ,  F21V29/85

Abstract: A surface light source device includes a light source; a light guide plate that has a light entrance surface through which light enters, and that emits the light entering through the light entrance surface from a light exit surface; a wiring board; and a metal frame. The metal frame includes a bottom portion having a bottom surface that faces a surface on an opposite side to the light exit surface, a side wall erected on an outer periphery of the bottom surface, and a projecting portion provided on the side wall so as to project toward the bottom surface side. The metal frame houses the light source, the light guide plate, and the wiring board. At least a part of the light source is disposed between the bottom portion and the projecting portion, and the wiring board is disposed between the light source and the bottom portion.