Patent ID: 7922372
Filing Date: 2011-04-12
Classification: F21S,F21V,F21W,F21Y

Abstract:
1. A LED street lamp, comprising a lamp body and LED bulbs, wherein the lamp body comprises a head portion, a middle portion, and a tail portion, wherein the head portion is disposed opposite to one end of the middle portion, and the tail portion is disposed opposite to the other end of the middle portion; a first gasket is sandwiched between the head portion and the middle portion, and the head portion connects to the middle portion through a fastener; a second gasket is sandwiched between the tail portion and the middle portion, and the tail portion connects to the middle portion through another fastener; the middle portion is a profile which has the same cross section in different positions along its length direction; the profile has a flat shaped substrate extending along the length direction of the profile, said substrate has a front surface and a back surface; two side plates are set on two edges of the front surface, and a plurality of heat diffusion wings are disposed on the back surface of the substrate; the street lamp also comprises a heat conduction floor with printed circuit, and a plurality of LED bulbs are set on the floor to form a LED array board; the side opposite to the side set with the LED bulb of the heat conduction floor is in close contact with the front surface of the substrate of the middle portion; the LED street lamp further comprises secondary optical lens placed on a lens board via snap joints; said lens board runs parallel to the LED array board, and each LED lamp corresponds to one secondary optical lens; a plurality of supports with the same height are set on a side of the lens board opposite to the LED array board; said supports extend to the heat conduction floor, and the lens board and the heat conduction floor are fixed to the front surface of substrate through fastener; the head portion of the lamp body has a first transverse plate that is placed at an end where the head portion connects with the middle portion; the tail portion of the lamp body has a second transverse plate that is placed at an end where the tail portion connects with the middle portion; said first transverse plate, second transverse plate, the two side plates of the front surface of the middle portion, and the front surface of middle portion define a cavity, where the front surface of middle portion forms the bottom of the cavity, and the first transverse plate, the second transverse plate, and the two side plates form the walls of the cavity; one side of the transverse plates and the side plates is formed steps thereon which are used for holding a lampshade; the head portion has a section of pipe with the axis of the pipe perpendicular to the first transverse plate; said first transverse plate has wire holes, and the side wall of the pipe has threaded holes; and the head portion, the middle portion, and the tail portion are all made of material with good heat conductivity; said LED street lamp further comprises the lampshade disposed with the use of the steps, and a third gasket is disposed between the lampshade and lamp body.