Patent ID: 7819536

Claim:
A lamp unit for a projector comprising: a lamp provided with an electrode terminal on a side thereof; a wire, connected to the electrode terminal, that is configured to supply electrical power to the lamp; a lamp casing made of metal configured to cover an entire periphery of the lamp, the lamp casing having, over the electrode terminal, a wire lead out aperture for leading out the wire; an insulating cover made of plastic resistant to ultraviolet light, the insulating cover being fitted along an edge of the wire lead out aperture, and surrounding around the electrode terminal; and a lid member made of plastic resistant to ultraviolet light, the lid member covering the insulating cover, the lid member having a convex rib and a flange, the convex rib coming in contact with an inner periphery of the insulating cover, the flange coming in contact with an outer periphery of the insulating cover.