DUAL CHAMBER PASSIVE COOLING SYSTEM FOR LED LAMP
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United States of America Patent
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N/A
Issued Date -
Apr 14, 2011
app pub date -
Oct 7, 2010
filing date -
Oct 9, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention is embodied an a dual-chamber passive cooling system for a light-emitting diode (LED) lamp and in a lighting fixture comprising such a system. The system comprises a printed circuit board (PCB) having a hole formed therein and extending through the PCB, and a shell defining a recess configured to receive the PCB. An LED may be positioned on one side of the PCB. The PCB is a thermally conductive PCB, such as a metal-core or graphite-core PCB, and is positioned within the recess so that it divides the recess into a first chamber defining a first volume and a second chamber defining a second volume that is less than the first volume. The shell has a first opening formed therein proximate the first chamber and a second opening formed therein proximate the second chamber, so that air can flow into and out of the chambers, cooling the LED and PCB through convection.
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Patent Citation Ranking
- 1 Citation Count
- F21V Class
- 3.79 % this patent is cited more than
- 14 Age