公开(公告)号：US20190044452A1

公开(公告)日：2019-02-07

申请号：US16050627

申请日：2018-07-31

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kosaku ARITA ,  Takashi KAMBARA

IPC: H02M7/00 ,  H05K7/20 ,  H05K5/02 ,  H05K5/04 ,  H02M1/32

Abstract: A power supply includes a casing including a heat-conducting material and having an inner surface and an outer surface. The casing is a one-piece component having a substantially tubular shape. The power supply also includes a circuit board disposed in the casing. The circuit board has a first surface on which one or more circuit components are mounted and a second surface on an opposing side of the first surface. The power supply also includes a first cover disposed over a first opening at a first end portion of the casing on a tubular axis, and a second cover disposed over a second opening at a second end portion of the casing on the tubular axis. The first surface of the circuit board faces the inner surface of the casing.

公开(公告)号：US20200100338A1

公开(公告)日：2020-03-26

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: H05B33/08 ,  F21S41/148

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.

公开(公告)号：US20180063907A1

公开(公告)日：2018-03-01

申请号：US15677172

申请日：2017-08-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi KAMBARA

IPC: H05B33/08 ,  F21V23/02 ,  H02M3/335

CPC classification number: H05B33/089 ,  B60Q1/0023 ,  B60Q1/0094 ,  B60Q1/1415 ,  F21S41/148 ,  F21S41/255 ,  F21V23/02 ,  F21Y2115/10 ,  H02M3/156 ,  H02M3/33507 ,  H02M2001/008 ,  H02M2001/327 ,  H05B33/0815 ,  H05B33/0848 ,  H05B33/0887

Abstract: A lighting device includes a current outputter, a load characteristic obtainer and a controller. The current outputter is configured to supply a current to a light source of at least one light source unit. The load characteristic obtainer is configured to obtain load information from a corresponding load information outputter of the at least one light source unit, by supplying the electric power to the load information outputter. The controller is configured to control the current of the current outputter, which is supplied to the light source, based on the load information. The load characteristic obtainer is configured to supply the electric power to the corresponding load information outputter only during a time period of obtaining the load information, but stop supply of the electric power to the corresponding load information outputter during a time period other than the time period of obtaining the load information.