Abstract: A turn lamp unit has a substrate holding unit for use when assembling a rigid substrate equipped with a lamp to a base member. This substrate holding unit comprises a board-like substrate mount rising from a bottom face on the inner face side of the base member; a pair of elastic pressers, which rise from a flat part of the substrate mount and are arranged so as to oppose each other in a width direction of the base member (i.e., a vertical direction in the state where the turn lamp unit is mounted to a door mirror), for pressing the front face of the rigid substrate by elasticity and thereby holding the rigid substrate at the substrate mount; and a projection, disposed on the substrate mount between the pair of elastic pressers, for abutting against the rear face of the rigid substrate.

Abstract: For a turn lamp unit, a reflecting member is disposed in an inner space formed by a housing and lens section, wherein the reflecting member is fixed to the housing by a screw. The head portion of the screw is disposed inside a screw housing space arranged at the housing, and an opening of the screw housing space is closed by a waterproof moisture-transmission section. Further, since the inner space and screw housing space are communicated with each other through a breathing hole, one end of the breathing hole is continuous with the inside of the screw housing space closed by the waterproof moisture-transmission section, and the other end of the breathing section is continuous with the inside of the inner space.

Abstract: For a turn lamp unit, a reflecting member is disposed in an inner space formed by a housing and lens section, wherein the reflecting member is fixed to the housing by a screw. The head portion of the screw is disposed inside a screw housing space arranged at the housing, and an opening of the screw housing space is closed by a waterproof moisture-transmission section. Further, since the inner space and screw housing space are communicated with each other through a breathing hole, one end of the breathing hole is continuous with the inside of the screw housing space closed by the waterproof moisture-transmission section, and the other end of the breathing section is continuous with the inside of the inner space.