Patent ID: 8277099

Claim:
A vehicle lighting system which is disposed in a lamp room defined by a lamp housing and a lens, said system comprising: (i) a lamp unit including a semiconductor-type light source and reflectors arranged to reflect light from the semiconductor-type light source; (ii) a heat sink member having the lamp unit mounted on and separable from the heat sink member, for radiating a heat generated from the semiconductor-type light source; (iii) a pivot portion which is provided on a side face of the heat sink member, for rotatably mounting the heat sink member on the lamp housing, the pivot portion comprising a shaft portion extending from the heat sink member and a spherical portion provided at an end of the shaft portion; and (iv) an optical axis adjustment mechanism, which is provided at a predetermined position of a foreface of the heat sink member, the optical adjustment mechanism rotating via the pivot portion to thereby adjust an optical axis of light illuminated from the lamp unit, wherein: the pivot portion and the optical axis adjustment mechanism are formed integrally with each other relative to the heat sink member so as to improve heat radiation efficiency of the heat sink member, the optical axis adjustment mechanism includes: a first optical axis adjustment mechanism for adjusting the optical axis in a first direction; and a second optical axis adjustment mechanism for adjusting the optical axis in a second direction which is different from the first direction, wherein the pivot portion is positioned in proximity to a center of mass of the heat sink member in a forward direction, the first and second optical axis adjustment mechanisms are positioned opposite to each other in the forward direction with the pivot portion sandwiched between the first and second optical axis adjustment mechanisms.