Patent ID: 9163796
Filing Date: 2015-10-20
Classification: F21K,F21S,F21V,F21W,F21Y,Y10T

Abstract:
1. 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 taller than the smaller fins, wherein there are more smaller fins disposed across the second base than there are larger fins disposed across the first base, 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; and a light emitting diode (LED) attached adjacent to the first bottom surface.