LIGHTING DEVICE, HEAT TRANSFER STRUCTURE AND HEAT TRANSFER ELEMENT
First Claim
1. A lighting device, comprising:
- a housing having a substantially circular, substantially annular portion;
a reflector disposed within the housing;
a light emitter;
a heat pipe in thermal communication with the light emitter and the housing, the heat pipe having a thermal transfer region and at least a first thermal exchange region, at least a portion of the first thermal exchange region extending in a shape which follows at least a first portion of the substantially circular, substantially annular portion of the housing and the thermal transfer region extends in a shape which comprises at least a portion of a diameter of the substantially circular, substantially annular portion of the housing.
4 Assignments
0 Petitions
Accused Products
Abstract
A heat pipe configured to transfer heat from a central portion of a lighting device to an edge portion of the lighting device, the heat pipe comprising one region which extends along a portion of a diameter of a substantially circular, substantially annular shape and another region that extends along a diameter of the shape. Also, a lighting device comprising a housing, a reflector, a light emitter and a heat pipe as described above. Also, a self ballasted lamp comprising a solid state light source, an electrical connector, an AC power supply, a reflector configured to receive light from the source and emit reflected light from an aperture, and a thermal management system. Also, a lighting device, comprising a housing, a reflector, a light emitter comprising an array of solid state light emitters, a heat pipe and a sensor.
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Citations
48 Claims
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1. A lighting device, comprising:
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a housing having a substantially circular, substantially annular portion; a reflector disposed within the housing; a light emitter; a heat pipe in thermal communication with the light emitter and the housing, the heat pipe having a thermal transfer region and at least a first thermal exchange region, at least a portion of the first thermal exchange region extending in a shape which follows at least a first portion of the substantially circular, substantially annular portion of the housing and the thermal transfer region extends in a shape which comprises at least a portion of a diameter of the substantially circular, substantially annular portion of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A heat transfer element for a solid state lighting device, comprising:
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a heat pipe, the heat pipe configured to transfer heat from a central portion of a substantially circular, substantially annular shaped portion of the lighting device to an edge portion of the lighting device, remote from the central portion of the lighting device, the heat pipe comprising; a thermal transfer region, at least a portion of which extends in a shape that comprises at least a portion of a diameter of the substantially circular, substantially annular shape; and a first thermal exchange region that extends in a shape that comprises at least a first portion of the substantially circular, substantially annular shape. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A solid state self ballasted lamp for operation on alternating current (AC) line voltage, the self ballasted lamp comprising:
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a solid state light source wherein the light emitted by the solid state light source has a Correlated Color Temperature (CCT) of 4000K or less and a Color Rendering Index (CRI) of at least 90; an electrical connector for connecting to a light socket; an AC power supply electrically coupled to the electrical connection and configured to receive the AC line voltage and provide current to the solid state light source; a reflector configured to receive light from the solid state light source and emit reflected light from an aperture of about 4 inches or less, the reflected light having a beam angle of 30 degrees or less; and a thermal management system configured to extract heat from the solid state light source and transfer the extracted heat to a surrounding environment and maintain a junction temperature of the solid state light source at or below a 25,000 hour rated lifetime junction temperature for the solid state light source in a 25°
C. surrounding environment,wherein the self ballasted lamp has a wall plug efficiency of at least about 40 delivered lumens per watt. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A lighting device, comprising:
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a housing; a reflector disposed within the housing; a light emitter comprising an array of solid state light emitters; a heat pipe in thermal communication with the light emitter and the housing; and at least one sensor, the sensor being positioned within a region which receives direct light from the light emitter when the light emitter is emitting light. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification