Patent ID: 8360616
Filing Date: 2013-01-29
Classification: F21S,F21V,F21W

Abstract:
1. A method of installing a secondary optical lens on a LED street lamp comprising, a. install said secondary optical lens on a lens floor; said lens floor has a plurality of lens mounting holes, each of which has two elastic tongue pieces symmetrically on the edge; said secondary optical lens has a flat bottom, a dent which has the same shape with convex top of a LED bulb is mounted to said bottom, and two hooks extruding out of said bottom are respectively and symmetrically mounted to both sides of said dent; said bottom of said secondary optical lens is in close contact with front of said lens floor, said dent of said secondary optical lens locates into area of said lens mounting hole, and said two hooks buckle said two tongue pieces on the edge of lens mounting hole; said two hooks of said secondary optical lens have clearance along the x axis and y axis of said lens floor in the area of said lens mounting hole, when given a force to said secondary optical lens along the z axis that is vertical to said lens floor, which make said secondary optical lens have the trend of leaving said lens floor, said secondary optical lens will move along the z axis, meanwhile, overcome the elastic force of said two tongue pieces on the edge of lens mounting hole; each of said lens mounting holes corresponds to one of said secondary optical lens; b. install said lens floor which has said secondary optical lens and a LED arrayed board the body of said LED street lamp; combine the back of said lens floor which has said secondary optical lens with the front of said LED arrayed board on which a plurality of LED bulbs are mounted, make the position of said LED bulb corresponds to the position of said secondary optical lens, and make convex top of each of said LED bulb locate in one said dent of said secondary optical lens though said lens mounting hole; said body of LED street lamp has a capacity space, where the back of said LED arrayed board is in close contact with the bottom of said capacity space, the back of said lens floor which has said secondary optical lens is in close contact with the front of said LED arrayed board, and said LED arrayed board and said lens floor make the fixed connection to said body of LED street lamp with a fastener.