Patent ID: 8294356

Claim:
A light-emitting element lamp including: a thermally conductive substrate mounting part comprising a screw through-hole and an outer circumferential surface exposed outwardly; a light source part comprising a substrate with light-emitting elements mounted thereon, the substrate being attached to the substrate mounting part so as to be thermally coupled to the substrate mounting part; a thermally conductive cover comprising a first end with an annular connection part and a second end, the annular connection part being thermally coupled to and connected to the substrate mounting part, wherein a screw hole is disposed in the cover at a position opposing the screw through-hole of substrate mounting part, the cover is tapered radially inward from the first end to the second end, and a width of an inner space defined by an inside of the cover decreases from a portion of the inner space near the first end to a portion of the inner space near the second end; an insulative cover comprising a first end and a second end, wherein the first end is connected to the thermally conductive cover and the second end comprises a cap connected thereto; a lighting circuit which is accommodated in the insulative cover and is configured to control lighting of the light-emitting elements; and a screw which is screwed in the screw hole of the thermally conductive cover via the screw through-hole of the substrate mounting part, the screw pressing and fixing the substrate mounting part against the connection part of the thermally conductive cover.