| 摘要 |
PROBLEM TO BE SOLVED: To prevent lowering of visibility at long distance which occurs when lighting a near distance with a wide range mode. SOLUTION: For the head lamp 1, at least one of side plates 5 locating at left and right of a main reflection surface 3, are turned into an auxiliary reflection surface 6 in the state that the location of a front end is kept and a back end is moved in the direction keeping away from the light source 2, and the main reflection surface 3 is extended to the space between the auxiliary reflection surfaces formed by moving, and turned into an extended part 3a of the main reflection surface. By the above, the angle of the reflection light reflected by the extended part 3a of the main reflection surface, is widened to obtain a wide radiation angle without losing the proper characteristics of the head lamp. |
