Patent ID: 7431475

Claim:
A radiator for a light emitting unit, annexed to said light emitting unit including a plurality of light emitting diodes mounted on a first principal surface of a wiring substrate, said radiator comprising: a radiating plate combined with said wiring substrate, the radiating plate comprising a first principal surface faced as a faying surface to a second principal surface of said wiring substrate, the second principal surface of the wiring substrate being opposite to said first principal surface of said wiring substrate, wherein the radiating plate is provided with a heat pipe fitting portion that comprises a recessed portion opened in a second principal surface of the radiating plate, the second principal surface located opposite to said first principal surface of the radiating plate; and a heat pipe mounted into said heat pipe fitting portion of said radiating plate while keeping close contact with an inner wall of said heat pipe fitting portion; wherein heat generated from said light emitting diodes is transferred to a radiating means through said radiating plate and said heat pipe.