Patent ID: 8358073

Claim:
A light source unit for a semiconductor-type light source of a vehicle lighting device, comprising: a light source and a socket to which the light source is attached, wherein: the light source includes a base plate, a light emitting chip for the semiconductor-type light source, a control device which controls light emission of the light emitting chip and a wiring device which supplies electric power to the light emitting chip via the control device, the light emitting chip, the control device, and the wiring device being attached to the base plate; the socket includes an insulating member, a radiating member which makes heat generated in the light source radiate outward and a feed member which supplies electric power to the light source, the radiating member and the feed member being assembled to the insulating member in a mutually insulated manner; the base plate and the radiating member are in abutment with each other; and the insulating member includes a mounting unit for an attachment to the vehicle lighting device in a removable manner.