Patent ID: 7674016

Claim:
An LED lamp comprising: a hollow prism-shaped heat sink with a through hole defined therein from a lateral side to an opposite lateral side thereof; a plurality of LED modules mounted on a periphery of the heat sink; and a plurality of fins attached to the heat sink, the fins having external portions outside the heat sink, and internal portions in the through hole of the heat sink in a manner such that at least two fins have the external portions thereof spaced from each other, and the internal portions thereof connecting with each other, thus increasing a heat dissipating area of the heat sink and reinforcing the heat sink; wherein a pair of annular connections project outwardly from the two opposite lateral sides of the heat sink in such a manner that each of the pair of annular connections has an interior diameter essentially identical to an interior diameter of the heat sink, and an exterior diameter less than an exterior diameter of the heat sink.