公开(公告)号：US20120119651A1

公开(公告)日：2012-05-17

申请号：US13294205

申请日：2011-11-11

申请人： Hiromichi Nakajima ,  Naoko Iwai ,  Masahiko Kamata ,  Sayaka Tomiyama ,  Toru Ishikita ,  Toshikiko Sasai

发明人： Hiromichi Nakajima ,  Naoko Iwai ,  Masahiko Kamata ,  Sayaka Tomiyama ,  Toru Ishikita ,  Toshikiko Sasai

IPC分类号： H05B37/03

CPC分类号： H05B33/0821 ,  H05B33/089

摘要： In one embodiment, a lighting device includes an LED lighting circuit and an LED load constituted by a plurality of parallel circuits formed by connecting a plurality of LED elements in parallel, and a series circuit formed by connecting the parallel circuits. The series circuit is connected with an output terminal of the lighting device. In case one LED element becomes open fault mode in one of the parallel circuit, the other LED elements continue lighting. In case two or more LED elements become the open fault mode, the other LED elements also become the open fault mode, and all the LED elements turn off.

摘要翻译： 在一个实施例中，照明装置包括LED点亮电路和由多个并联电路构成的LED负载以及通过连接并联电路形成的串联电路。 串联电路与照明装置的输出端子连接。 如果一个LED元件在并联电路之一变为开路故障模式，则其他LED元件继续点亮。 如果两个或更多LED元件成为开路故障模式，其他LED元件也将成为开路故障模式，并且所有LED元件关闭。