公开(公告)号：US20160366741A1

公开(公告)日：2016-12-15

申请号：US15171444

申请日：2016-06-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Satoshi YAGI ,  Kei MITSUYASU ,  Shinichiro GOTO ,  Tomohiro SUGIURA ,  Katsuyoshi NAKADA

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  H05B41/3924

Abstract: A dimming lighting circuit includes: a rectifier circuit; a phase detection circuit which outputs a dimming signal having a signal level corresponding to a conduction phase angle of an AC voltage; and a DC-DC converter which receives a DC voltage output from the rectifier circuit and supplies a light source with a DC current corresponding to the signal level of the dimming signal output from the phase detection circuit. If the conduction phase angle detected when the dimming lighting circuit receives the AC voltage at power-on is less than or equal to a predetermined angle, the phase detection circuit outputs, as the dimming signal, a substitute signal having a signal level corresponding to a conduction phase angle greater than the conduction phase angle of the AC voltage, for a predetermined time period.

Abstract translation: 调光点亮电路包括：整流电路; 相位检测电路，其输出具有与交流电压的导通相位角对应的信号电平的调光信号; 以及DC-DC转换器，其接收从整流电路输出的直流电压，并向光源提供与从相位检测电路输出的调光信号的信号电平相对应的直流电流。 如果在调光点亮电路接通上电时的交流电压时检测到的导通相位角小于或等于预定角度，则相位检测电路输出具有对应于信号电平的信号电平的替代信号作为调光信号， 导通相位角大于交流电压的导通相位角，预定时间段。

公开(公告)号：US20160374162A1

公开(公告)日：2016-12-22

申请号：US15178850

申请日：2016-06-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Katsuyoshi NAKADA ,  Keisuke UEDA ,  Kenichi FUKUDA

IPC: H05B33/08 ,  H02M7/06 ,  H02M1/36 ,  H05B37/02

CPC classification number: H05B33/0815 ,  H02M3/156 ,  H05B33/0818 ,  H05B33/0845 ,  H05B37/0281

Abstract: A lighting device which outputs a DC current to a load, the lighting device including: a downconverter circuit which includes a switching element and steps down a DC voltage input to the downconverter circuit; and a controller which controls turning on and off of the switching element, wherein the controller has operating modes including a detection mode in which the controller detects a time taken for a current through the switching element to reach a predetermined value after the switching element turns on, the current through the switching element representing the DC current output to the load.

Abstract translation: 一种向负载输出直流电流的照明装置，所述照明装置包括：下变频器电路，其包括开关元件并降压输入到所述下变频器电路的直流电压; 以及控制器，其控制所述开关元件的接通和断开，其中所述控制器具有包括检测模式的操作模式，其中所述控制器在所述开关元件接通之后检测到通过所述开关元件的电流达到预定值所花费的时间 ，通过开关元件的电流代表输出到负载的直流电流。