Patent ID: 7568824

Claim:
A vehicle lighting device, comprising: a lamp compartment; a light source unit comprising a light emitting device as a light source and a projection lens as a light distribution control member for distributing light from said light source forwards, wherein said light source unit is disposed in said lamp compartment and said projection lens is made from a resin and mounted on a lens mounting portion made from a resin, said lens mounting portion extending forward from said light emitting device, wherein a face bearing portion is disposed at a distal end of said lens mounting portion so as to correspond to a rear surface of a collar portion disposed along an outer circumference of said projection lens, wherein a plurality of extending projections are provided on an outer circumferential side of one of the rear surface of said collar portion and said face bearing portion and a plurality of stepped portions are disposed on an outer circumferential side of the other of the rear surface of said collar portion and said face bearing portion, said stepped portions axially engaging said plurality of extending projections with an optical axis of said projection lens aligned substantially with a longitudinal axis of said lens mounting portion and forming erect walls which lie between the optical axis and said extending projections, wherein said extending projections and said stepped portions are welded together with the rear surface of said collar portion and said face bearing portion in longitudinal abutment with each other, and whereby any burrs, produced from the extending projections and the stepped portions during the welding when the tip of each extending projection is pressed, are prevented from flowing out toward an optical axis of the projection lens by the erect walls.