| 摘要 |
[TASK] To improve visibility of an area ahead of a vehicle without giving glare to a driver of an oncoming vehicle or a leading vehicle, in a vehicular illumination lamp configured so as to form an additional light distribution pattern for high beam. [MEANS OF SOLVING THE PROBLEM] A projector-type lamp unit 20A arranged with pairs of right and left light-emitting elements 24L, 24R and reflectors 26L, 26R in the rear of a projection lens 22 is configured to be swiveled in the horizontal direction by a swivel mechanism 50A. The lamp unit 20A is configured such that a double-sided mirror piece 28 that is arranged so as to extend along a vertical plane including an optical axis Ax and that is formed so that a front end edge 28b thereof passes through a rear side focal point F of the projection lens 22 reflects part of reflected light from a left reflector 26L toward the left side and also reflects part of reflected light from a right reflector 26R toward the right side. Consequently, both or either of a pair of additional light distribution patterns having clear outlines at a left end edge or a right end edge thereof can be selectively formed and displaced in the horizontal direction. |
