Patent ID: 8632227
Filing Date: 2014-01-21
Classification: F21S,F21V,F21Y

Abstract:
1. A heat removal assembly for a lighting apparatus, the heat removal assembly comprising: an interconnected plurality of fins configured to receive heat from a light source of the lighting apparatus, wherein the interconnected plurality of fins has a fin length, and the interconnected plurality of fins is configured to have gap spaces in a cross-section in a direction substantially perpendicular to the fin length; and a duct configured to draw a stack-effect airflow substantially along the fin length through the gap spaces to remove heat from the interconnected plurality of fins, wherein the gap spaces are configured to reduce interference between neighboring boundary layers that form along each of the fins for a particular duct and fin configuration for the lighting apparatus, and wherein the interconnected plurality of fins and the duct are further configured such that the stack-effect airflow in the duct is blocked if dimensions of the interconnected plurality of fins in a plane of the cross-section are increased to eliminate the gap spaces.