公开(公告)号：US20180235058A1

公开(公告)日：2018-08-16

申请号：US15878116

申请日：2018-01-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Daisuke YAMAHARA ,  Hiroyuki ASANO ,  Satoshi YAGI ,  Koki MATSUI

IPC: H05B37/02

CPC classification number: H05B37/0272 ,  H05B37/0281

Abstract: A lighting device includes: a first lighting control circuit; a second lighting control circuit which controls the first lighting control circuit; a first control power supply which supplies a first voltage to the first lighting control circuit; a second control power supply to which the first voltage is supplied and which supplies a second voltage to the second lighting control circuit; and a reset circuit which (i) when the reset circuit detects that the first voltage decreases to a first threshold or lower, causes the second control power supply to stop supply of the second voltage, and (ii) when the reset circuit detects that the first voltage increases to a second threshold or higher and that the second voltage is higher than a third threshold, causes the second control power supply to start supply of the second voltage after the second voltage decreases to the third threshold or lower.