BACK LIGHT UNIT FOR OUTSIDE MIRROR OF VEHICLE

摘要

The present invention provides a back light unit for an outside mirror of a vehicle, which optimizes a light emitting structure of a light emitting diode (LED) to improve uniformity and brightness of emitted light, thereby improving visibility. The back light unit for an outside mirror of a vehicle comprises: a bottom case; a light source part placed on an inner lower part of the bottom case which may emit light when power is supplied; a light guide plate positioned on an inner upper part of the bottom case, uniformly dispersing light emitted from the light source part to transmit the light to a prism plate; and the prism plate positioned on the inner upper part of the bottom case in such a manner which the prism plate is arranged on the front part of the light guide plate, controlling the light transmitted from the light guide plate in order to increase surface brightness; and a top case coupled to a front end of the bottom case.