LIGHT SOURCE UNIT, MANUFACTURING METHOD OF LIGHT SOURCE UNIT, AND VEHICLE LAMP FITTING

摘要

PROBLEM TO BE SOLVED: To achieve improvement of heat radiation performance for heat generated when light is emitted from light emitting elements.SOLUTION: A light source unit includes: a socket housing 9 having a heat sink 13 formed by a metal material and a resin molded part 12 formed by a heat conductive resin material; a substrate 25 mounted on the socket housing; a wiring pattern formed on the substrate; light emitting elements 26 functioning as a light source; and a conductive part 28 connecting the wiring pattern with the light emitting elements. A first heat radiation part 13a contacting with the substrate is provided at the heat sink. Heat radiation fins 16, 17 and engagement parts 20 which are engaged with predetermined members are provided at the resin molded part. The socket housing is formed by integrally molding the heat sink with the resin molded part.SELECTED DRAWING: Figure 4