| 摘要 |
<P>PROBLEM TO BE SOLVED: To integrally constitute a switch part to turn on/off a power input and a driving circuit part to drive a light source, and reduce the cost of a whole device and improve the processability. <P>SOLUTION: A light emitting diode driving device is constituted of a DC/DC converter 3, a voltage detection circuit 4, a current detection circuit 5, a control circuit part 6, and a current control part 7. The driving circuit part containing the DC/DC converter 3 contains, in an input part, the switch part 2 having a relay switch SW to open/close a power input path to the driving circuit part; and the driving circuit part and the switch part are constituted as the same unit. <P>COPYRIGHT: (C)2010,JPO&INPIT |
