LED Light Fixture With Improved Thermal Management
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United States of America Patent
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Issued Date -
Sep 19, 2013
app pub date -
Dec 14, 2009
filing date -
Dec 14, 2009
priority date (Note) -
Abandoned
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Abstract
A light fixture (10), having a circuit board (20) having first and second major surfaces (20a and 20b); at least one light emitting diode (25) mounted on the first major surface (20a) of the circuit board (20); an enclosure (30) formed of a material having two major surfaces (30a and 30b) and a thermo-mechanical design constant of at least 20 mm-W/m*K and shaped so as to define an opening (32) and a cavity (33), one of the major surfaces (30a) of the material defining the surface of the cavity (33) and the enclosure (30) positioned so as to enclose the second major surface (20b) of the circuit board (20); a heat spreader (40) having a surface area at least twice that of the circuit board and a thermo-mechanical design constant of at least 10 mm-W/m*K, the heat spreader (40) positioned in thermal contact with both the circuit board (20) and the enclosure (30).
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