Patent ID: 8227960

Claim:
An LED projector lamp, comprising a heat sink base, a plurality of radiation fins radially arranged around said heat sink base, an electric connector affixed to said radiation fins at a top side above said heat sink base, and a light source bonded to a bottom wall of said heat sink base and electrically connected to said electric connector, wherein: each said radiation fin has a first light shade extending perpendicularly from an inner side near a bottom side thereof, and a second light shade perpendicularly extending from the inner side thereof and connected to the first light shade at right angle, the first light shades of said radiation fins being in contact with one another and arranged around the periphery of said heat sink base to form a vertical light shielding wall; the second light shades of said radiation fins being in contact with one another and in contact with the periphery of said heat sink base to form a horizontal light shielding wall around the periphery of said heat sink base and perpendicularly connected to the vertical light shielding wall.