| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal lamp for a vehicle with nice appearance' even when moving a viewpoint from a front surface direction of a lamp in right and left direction and observing the lamp from an oblique direction. SOLUTION: A reflection surface 14a of a reflector 14 is comprised of plural reflection elements 14s, diffusing and reflecting light from a light source 12 in the right and left direction. A left direction maximum diffusion angle θL for each reflection elements 14s is set, such that the more left the reflection element is located the smaller the angle is, and a right direction maximum diffusion angle θR for each reflection elements 14s is set, such that the more right the reflection element is located the smaller the angle is. Accordingly, when the view point from a lamp front surface direction is moved in a right and left direction and the lamp is observed from an oblique direction, phenomenon observed in a conventional lamp that a reflection area appearing bright is reduced gradually, and a reflection area looking dark increases in proportion as view line angles αL, αR increase is not observed, the reflection surface 14a as a whole apparatus bright up to some degree of lamp view line angles. |
