| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of a uniform illumination part in a specific area on a lens in which a housing is adjacent to another vehicle part by provid ing an optical pipe extending along a transverse direction of the lens and having a light collecting part transmitting the light focused from the lamp into a light distribution part. SOLUTION: An optical pipe 18 has a vertical light collecting leg part 68, a horizontal light distributing leg part 72, and a base bottom part 70. When a light source 16 is lit, a light collecting surface 74 of a radiation face shape of the optical pipe 18 collects light beams radiated from the light source 16, and these light beams are sent to the base bottom part 70 then to the horizontal leg part 72 by optical characteristics of the optical pipe 18. These light beams reflects upwardly from a flat lower-side surface 78, re-reflects downwardly when the light beams abut with a saw-tooth shaped groove 81 of an upper surface 80, propagates longitudinally through a length of the horizontal leg part 72, and is sent downwardly through a lens 14. Therefore, the light quantity of a part illuminated by the optical pipe 18 of the lens 14 is equal to the light quantity of a part directly illuminated by the light source 16. |
