| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve the safety of a vehicle in traveling by preventing a large ground fault current from flowing from a positive electrode side to a ground side when a ground fault occurs on the positive electrode side of a power supply. <P>SOLUTION: A vehicle lamp lighting control device 1 includes: a boost chopper circuit 2; an abnormality detecting unit 5 for detecting an abnormality of an output on a positive electrode side based on at least one of a power supply voltage or a supply voltage supplied to LEDs 20-1 to 20-N and outputting a signal indicating the abnormality; and a bypass unit 4 for bypassing a supply current supplied to the LEDs 20-1 to 20-N in accordance with the signal indicating the abnormality. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
