| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a headlight with prolonged lifetime and of low power, arranged in front of a vehicle and for confirming safety in the advancing direction. <P>SOLUTION: The headlight 1 has a convex lens 2 for projection, and a light-emitting surface arranged, at the rear side of a rear focal point of the convex lens 2 for projection and formed by a plurality of LED chips 6. A constant current driving circuit 4 controls on/off control of respective LED chips 6, and a control circuit (not illustrated) turns on respective LED chips 6, by shifting electricity application timing per each group, in order to lead the discharged light with a constant amount of light emission from the LED chip 6. <P>COPYRIGHT: (C)2009,JPO&INPIT |
