Patent ID: 8628217

Claim:
An apparatus, comprising: a first fin structure with a first number of parallel oriented larger fins integrally formed with a first base, wherein the first base has a first bottom surface opposite the larger fins; a second fin structure with a second number of parallel oriented smaller fins integrally formed with a second base, wherein the second base has a second bottom surface opposite the smaller fins, wherein the second bottom surface contacts the larger fins, wherein the larger fins are oriented parallel to the smaller fins, wherein the larger fins are more than twice as tall as the smaller fins, wherein there are more than twice as many smaller fins disposed across the second base as there are larger fins disposed across the first base per unit distance perpendicular to the smaller fins, wherein ducts are formed between the larger fins, the second bottom surface and the first base, wherein a first end of each duct is blocked by an end wall, and wherein an intake hole passes through the first base into each duct at the first end of each duct; a mounting platform attached to the first bottom surface; and a light emitting diode (LED) attached to the mounting platform.