Thermal Management of LED Lighting Systems
First Claim
1. An LED track light fixture comprising:
- a. a fixture housing comprising a plurality of apertures;
b. a lighting assembly positioned at least partially within the fixture housing and comprising;
i. a heat sink with a plurality of fins;
ii. a reflector mounted on the heat sink;
iii. at least one light emitting diode supported on the heat sink, wherein the at least one light emitting diode is supported to emit light towards the reflector; and
iv. a synthetic jet actuator positioned adjacent the heat sink; and
c. a mounting structure for mounting the fixture housing to a track.
1 Assignment
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Accused Products
Abstract
Embodiments of the invention provide thermal management systems for LED light fixtures. In one embodiment, an LED track light fixture includes a lighting assembly, a fixture housing mounted to the lighting assembly and having a plurality of apertures, and a mounting structure that affixes the fixture housing to a track. In this embodiment, the lighting assembly includes a heat sink, a reflector, at least one light emitting diode, and a synthetic jet actuator. In a second exemplary embodiment, a sealed, enclosed LED light fixture includes a lighting assembly, along with an enclosure and a fixture housing surrounding the lighting assembly. In this embodiment, the lighting assembly includes at least one light emitting diode, a thermoelectric cooler, and at least one heat sink. In some embodiments, a forced air cooling device may be located between the printed circuit board and the thermoelectric cooler.
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Citations
18 Claims
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1. An LED track light fixture comprising:
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a. a fixture housing comprising a plurality of apertures; b. a lighting assembly positioned at least partially within the fixture housing and comprising; i. a heat sink with a plurality of fins; ii. a reflector mounted on the heat sink; iii. at least one light emitting diode supported on the heat sink, wherein the at least one light emitting diode is supported to emit light towards the reflector; and iv. a synthetic jet actuator positioned adjacent the heat sink; and c. a mounting structure for mounting the fixture housing to a track. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An enclosed LED light fixture comprising:
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a. a lighting assembly comprising; i. at least one light emitting diode positioned on a first side of a printed circuit board; ii. a thermoelectric cooler comprising a cold side and a hot side, wherein the cold side of the thermoelectric cooler is adjacent a second side of the printed circuit board; and iii. a heat sink comprising a first side and a second side, wherein the heat sink is mounted to the thermoelectric cooler so that the first side of the heat sink is adjacent the hot side of the thermoelectric cooler and wherein a plurality of fins extend from the second side of the heat sink; and b. an at least partially transparent enclosure and a fixture housing that surround the lighting assembly. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An enclosed LED light fixture comprising:
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a. a lighting assembly comprising; i. at least one light emitting diode positioned on a first side of a printed circuit board; ii. a synthetic jet actuator comprising a nozzle surface and a mounting surface, wherein the nozzle surface of the synthetic jet actuator is adjacent a second side of a printed circuit board; iii. a thermoelectric cooler comprising a cold side and a hot side, wherein the cold side of the thermoelectric cooler is affixed to the mounting surface of the synthetic jet actuator; and iv. a heat sink comprising a first side and a second side, wherein the heat sink is mounted to the thermoelectric cooler so that the first side of the heat sink is adjacent the hot side of the thermoelectric cooler and wherein a plurality of fins extend from the second side of the heat sink; and b. an at least partially transparent enclosure and a fixture housing that surround the lighting assembly. - View Dependent Claims (15, 16, 17, 18)
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Specification