| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lighting device for a light source unit group capable of discriminating a trouble of an LED even in use for a turn lamp, and satisfying vehicle regulations. <P>SOLUTION: This lighting device for a light source unit group is provided with a lighting switch section 4 for controlling electricity application to a LED unit group 1, a disconnection detecting the section 5 for detecting the existence of disconnection in LED units U1, U2, ..., Un, and a switch control section 6 for controlling the lighting switch section 4 based on information about the existence of disconnection detected by the disconnection detecting section 5. In the case that all the LED units U1, U2, ..., Un are disconnected, all the LED units U1, U2, ..., Un are lighted in response to lighting instruction signals which are intermittently inputted, and in the case that at least one LED unit Uk is disconnected, an LED unit Um (m≠k) which is not disconnected when a first lighting instruction signal is inputted, is lighted for a certain time, and thereafter, turned off, and continuously, when a second or following lighting instruction signal is inputted, all the LED units U1, U2, ..., Un are maintained in light-out states. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
