Patent ID: 8235550

Claim:
A street lamp comprising: a light emitting diode (LED) module including a plurality of LEDs disposed on one side of a substrate; and a heat radiating body having a convex-up top surface and a bottom surface disposed on the substrate, wherein the top surface of the heat radiating body has a hemispherical shape, and the top surface has at least two heat radiating fins that extend from the top surface having the hemispherical shape, the top surface having a first convex shape from a first end to a second end along a first direction, the top surface further having a second convex shape from a first side to a second side along a second direction that is transverse to the first direction, and the at least two heat fins extend in the second direction from the first side to the second side, and wherein the heat radiating fins form a flow passage for fluid to flow along the second convex shape of the top surface of the heat radiating body toward the first side and toward the second side.