Patent ID: 7810965
Filing Date: 2010-10-12
Classification: F21S,F21V,F21Y

Abstract:
1. A heat removal assembly for a lighting apparatus, the heat removal assembly comprising: a plurality of fins configured to receive heat from a light source of the lighting apparatus, wherein two adjacent fins of the plurality of fins are separated by a gap width, and wherein each of the plurality of fins has a fin length, and each fin extends in a first direction along the fin length, and the gap width is specified in a plane substantially perpendicular to the first direction; and a duct configured to draw a stack-effect airflow past the plurality of fins through the gap widths to remove heat from the plurality of fins, wherein as the stack-effect airflow flows through the duct past the plurality of fins, a substantial portion of the stack-effect airflow flows substantially in the first direction along the fin length, and wherein the gap width separating two adjacent fins of the plurality of fins and the fin length of each of the plurality of fins are selected to reduce interference between neighboring boundary layers that form along each of the plurality of fins within the duct for a particular duct and fin configuration for the lighting apparatus.