公开(公告)号：US10779366B2

公开(公告)日：2020-09-15

申请号：US16576837

申请日：2019-09-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshiya Moriwaki ,  Masanobu Murakami ,  Masahiko Koizeki ,  Takashi Kambara

IPC: B60Q1/14 ,  H05B45/00 ,  F21S41/148 ,  H05B45/37 ,  B60Q1/04 ,  F21S41/30 ,  F21S45/47 ,  B60Q3/80

Abstract: A lighting apparatus includes a control circuit configured to control a power supply circuit such that a measurement value of an output current measured by a current measuring device approaches a target value. The control circuit is configured to execute a control mode alternatively selected from the plurality of control modes to control the power supply circuit. The plurality of control modes of the control circuit includes at least a first control mode and a second control mode. The first control mode is a control mode of adjusting the target value in accordance with a first direct-current voltage. The second control mode is a control mode which includes adjusting the target value regardless of the first direct-current voltage.