| 摘要 |
A light emitting unit is provided forward in the vicinity of the upper part of an optical axis extended in the longitudinal direction of a lighting unit. Furthermore, a light transmitting member is provided on the forward side of the light emitting unit. A front surface of the light transmitting member is constituted by a rotating elliptical surface with the optical axis to be a central axis, and a rear end face is formed to pass through a first focal point on the rear side of the rotating elliptical surface. Moreover, a reflector having a reflecting plane formed to surround a light emitting chip almost cylindrically is provided between the light emitting unit and the light transmitting member in such a manner that a front end opening portion is caused to abut on the rear end face 14 b of the light transmitting member. |
