公开(公告)号：US20170064783A1

公开(公告)日：2017-03-02

申请号：US15232522

申请日：2016-08-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shigeru IDO ,  Katsuhiko ISHIKAWA ,  Hirohiko NOJIRI

IPC: H05B33/08 ,  A47F3/04 ,  F25D27/00 ,  A47F3/00 ,  F21V15/01 ,  F21V33/00

CPC classification number: H05B33/0815 ,  A47F3/001 ,  A47F3/0469 ,  F21V15/01 ,  F21V33/0044 ,  F21Y2115/10 ,  F25D27/005 ,  H05B33/0812 ,  H05B33/083 ,  H05B33/0845 ,  H05B33/0887 ,  Y02B20/343 ,  Y02B20/346

Abstract: A light output control device includes a switching device, multiple signal input ports, a signal selection circuit, and a control circuit. The switching device is to be electrically connected between a direct-current power supply and a light source circuit. The light source circuit includes a semiconductor light emitting element. The multiple signal input ports respectively correspond to multiple kinds of light output control signals. The signal selection circuit selects, when receiving two or more light output control signals indicating different light output levels through the multiple signal input ports, a light output control signal indicating a lowest (or highest) light output level, from the two or more light output control signals. The control circuit performs switching control of the switching device with a duty cycle corresponding to the lowest (or highest) light output level indicated by the light output control signal selected by the signal selecting circuit.

Abstract translation: 光输出控制装置包括开关装置，多个信号输入端口，信号选择电路和控制电路。 开关装置电连接在直流电源和光源电路之间。 光源电路包括半导体发光元件。 多个信号输入端口分别对应于多种光输出控制信号。 当通过多个信号输入端口接收到指示不同的光输出电平的两个或多个光输出控制信号时，信号选择电路选择指示来自两个或更多个光输出的最低（或最高）光输出电平的光输出控制信号 控制信号。 控制电路以对应于由信号选择电路选择的光输出控制信号指示的最低（或最高）光输出电平的占空比执行开关装置的开关控制。