公开(公告)号：US20140015421A1

公开(公告)日：2014-01-16

申请号：US13933301

申请日：2013-07-02

Applicant: Panasonic Corporation

Inventor： Kei MITUYASU ,  Katunobu HAMAMOTO ,  Koji SAEKI

IPC: H05B33/08

CPC classification number: H05B33/08 ,  H05B33/0806 ,  H05B33/083 ,  H05B33/0854 ,  H05B33/0869 ,  H05B37/0227

Abstract: An LED module includes a light-emitting unit composed of a plurality of LEDs connected in series to one another, a sensor unit, a power interrupt circuit inserted into a power supply path through which the light-emitting unit is supplied with power from an external power source, and a control circuit that controls the power interrupt circuit according to output of the sensor unit. The LED module further includes a secondary battery and a voltage supply circuit. The voltage supply circuit supplies the control circuit with voltage equivalent to voltage drop between the ends of a group of LEDs included in the plurality of LEDs that constitute the light-emitting unit while the external power source is supplying power to the light-emitting unit, and supplies the control circuit with voltage output from the secondary battery while power interrupt circuit is interrupting the power from the external power source to the light-emitting unit.

Abstract translation: LED模块包括由彼此串联连接的多个LED组成的发光单元，传感器单元，插入电源路径中的电源中断电路，通过该电源路径从外部向发光单元供电 电源，以及根据传感器单元的输出来控制电源中断电路的控制电路。 LED模块还包括二次电池和电压供应电路。 电压供给电路在外部电源向发光单元供电的同时，向控制电路供给等效于构成发光单元的多个LED的一组LED的端部之间的电压降的电压， 并且在电源中断电路中断从外部电源到发光单元的电力时，向控制电路提供从二次电池输出的电压。