Patent ID: 7942549

Claim:
An LED lamp structure comprising: a flat LED lamp; a reflection cup coupled to the flat LED lamp and having a light reflecting curved inside surface; a metal heat sink coupled to an outer edge of the reflection cup, the metal heat sink including a plurality of guiding planes configured to change the angle of lights emitted by the LED lamp, the metal heat sink being a rectangular frame and each of the guiding plane is a transversal long straight sheet, and the at least some of the plurality of guiding planes are arranged to be approximately parallel; pin holes formed in the metal heat sink for accommodating pins of the LED lamp; a heat conducting base having a recess for receiving the metal heat sink, wherein the metal heat sink has a high thermal capacity to quickly absorb and conduct the heat produced by the LED lamp to the heat conducting base reduce the temperature of the LED lamp, wherein a plurality of through holes are formed in the recess, the metal heat sink being inserted into the recess to be fixed therein; and a plurality of bolts screwed into the through holes for attachment to a lighting device.