Patent ID: 8220970
Filing Date: 2012-07-17
Classification: F21S,F21V

Abstract:
1. A heat dissipation assembly for an LED downlight, comprising: a heat sink; an LED printed circuit board assembly having a first surface, a second surface and a plurality of LEDs on one of said first surface and said second surface; said LED printed circuit board assembly engaging a primary reflector on a second surface; a mixing chamber having a sidewall depending from adjacent said LED printed circuit board assembly to a lower flange; an optical assembly retained adjacent said lower flange of said mixing chamber and opposing said plurality of LEDs, said optical assembly retained in said opposing position by a retaining ring, said retaining ring positioned between said primary reflector and said mixing chamber lower flange; said primary reflector extending from said second surface of said LED printed circuit board and beyond said retaining ring; wherein said LED printed circuit board assembly transfer thermal energy in a first mode to said heat sink and in a second mode to said primary reflector; and, wherein said heat sink and the primary reflector do not touch one another.