Light source unit for vehicle lamp, vehicle lamp

A light source unit for a vehicle lamp, the light source unit comprising:

• a mounting member mounted on the vehicle lamp;
• a substrate mounted on the mounting member;
• a semiconductor light-emitting element electrically connected to the substrate;
• a power supply member mounted on the mounting member and the substrate and being electrically connected to the semiconductor light-emitting element, the power supply member including at least an electric circuit to drop a voltage, wherein one end of the power supply member is electrically connected to the semiconductor light-emitting element through the electric circuit;
• a connector that is arranged to be connected to another end of the power supply member, the another end being opposite to the one end;
• and
• a control circuit that performs control to supply a constant current to the another end of the power supply member, in accordance with a predetermined operating voltage;
• wherein the mounting member, the substrate, the semiconductor light-emitting element, and the power supply member are configured as a socket which is an integral structure, the socket including the connector, and
• the control circuit is configured separately from the socket and connects to the connector.