Patent ID: 8659049

Claim:
An LED packaging structure, comprising: a metal housing, having a cavity and two open ends, the cavity of the metal housing being bowl or taper shaped and provided with a smooth surface; a lens, disposed in the first open end of the metal housing; a sintered heat pipe, having a flat top mounting plane, and connected to the second open end of the metal housing; at least one LED chip, having a wavelength is between 310 to 470 nm, disposed in the cavity of the metal housing and said at least one LED chip is mounted on the flat to mounting plane of the sintered heat pipe; an electrical connection device, to connect the LED chip to an external circuit; a fixing base, to fix the sintered heat pipe, the electrical connection device and the LED chip together; wherein, the lens is a Fresnel lens consisting of a plurality of homocentric structures; the sintered heat pipe is provided with an external spiral groove for accommodating an extra heat pipe in a twisted manner, and wherein an inner wall of the extra heat pipe is provided with grooves and a copper powder sintering portion and diameters of a majority of the copper powders of the copper powder sintering portion are greater than a width of the grooves.