Patent ID: 8491162

Claim:
An LED lamp comprising a metal housing being bowl-shaped and comprising an inner surface; an outer surface; a bottom; an opening having an inner edge, wherein the inner edge comprises a recession; and two grooves formed axially on the inner surface, each extending from the bottom to the opening of the metal housing; a sintered heat pipe thermally attached to the inner surface, the bottom and the inner edge of the metal housing and comprising a first end; a second end; a bottom portion defined between the first end and the second end, positioned to the bottom of the metal housing and comprising a flattened area; an upper portion being attached to and thermally contacting the inner edge of the opening of the metal housing, wherein the upper portion is received in the recession of the inner edge; and two lateral parts extending between the upper portion and the bottom portion, respectively inserted and welded in the grooves and thermally connect the bottom, the inner surface and the inner edge of the opening of the metal housing; an LED attached to the flattened area of the bottom portion of the sintered heat pipe; and a cover covering the inner edge of the opening of the metal housing and comprising a hole allowing a light emitted from the LED to pass through, wherein the cover protects the sintered heat pipe located in the inner edge of the opening of the metal housing.