公开(公告)号：US09167654B2

公开(公告)日：2015-10-20

申请号：US14413146

申请日：2013-06-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Koji Watanabe ,  Yoshifumi Kuroki

IPC: H05B33/08

CPC classification number: H05B33/0851 ,  H05B33/0815 ,  H05B33/0818 ,  H05B33/0896 ,  Y02B20/346

Abstract: A solid light source lighting device includes: a step-down chopper circuit including a switching element and outputting a DC power by turning on and off the switching element; a capacitor connected in parallel to a solid light source connected across output terminals of the step-down chopper circuit; and a control circuit determining a control value for a switching operation of the switching element based on a dimming signal for indicating a dimming ratio of the solid light source, and performing switching control of the switching element based on the control value. When performing switching control of the switching element so that the dimming ratio becomes high based on the dimming signal indicating a first dimming ratio, the control circuit performs the switching control of the switching element based on the control value that becomes a second dimming ratio higher than the first dimming ratio for a prescribed time period.

Abstract translation: 固体光源照明装置包括：包括开关元件的降压斩波电路，通过接通和断开开关元件来输出直流电; 电容器并联连接到连接在降压斩波电路的输出端上的固体光源; 以及控制电路，基于用于指示固体光源的调光比的调光信号，确定开关元件的开关动作的控制值，并根据控制值进行开关元件的切换控制。 当控制电路基于表示第一调光比的调光信号进行开关元件的切换控制使得调光比变高时，控制电路根据控制值进行开关控制，该控制值变为高于 在规定时间段内的第一个调光比。