LED light engine apparatus
First Claim
1. A light engine comprising:
- at least one power connector to connect to a power source to convey alternating current (AC) power;
an AC to direct current (DC) power converter to;
receive the AC power via the at least one power connector; and
convert the AC power to DC power at a DC power level;
a circuit board comprising;
a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; and
lighting optics to distribute the light emitted from the LEDs; and
a chassis comprising;
a first side comprising a plurality of first fins extending upward to dissipate heat in a first direction; and
a second side comprising;
a mounting surface for the circuit board;
a fin wall surrounding the mounting surface, the fin wall comprising an inner surface to prevent the light from being emitted from the chassis in a direction from above less than a five degree angle below a reference plane intersecting a bottom surface of the chassis; and
a plurality of second fins extending outward from an outer surface of the fin wall to dissipate heat in a second direction.
2 Assignments
0 Petitions
Accused Products
Abstract
A light emitting diode (LED) light engine is provided for use in a light fixture to enable improved and efficient dissipation of heat generated in the light fixture. The light engine includes a circuit board that includes multiple LEDs for emitting light. The light engine includes a chassis that has a plurality of upper fins that extend upward from a central flanged portion to dissipate heat generated by the LEDs into the lighting fixture. The circuit board is mounted to a mounting surface on the chassis that is surrounded by a fin wall that depends from the central flanged portion. The chassis also has a plurality of lower fins that extend outward from an outer surface of the fin wall to dissipate heat out of the fixture and into the ambient air environment.
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Citations
71 Claims
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1. A light engine comprising:
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at least one power connector to connect to a power source to convey alternating current (AC) power; an AC to direct current (DC) power converter to; receive the AC power via the at least one power connector; and convert the AC power to DC power at a DC power level; a circuit board comprising; a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; and lighting optics to distribute the light emitted from the LEDs; and a chassis comprising; a first side comprising a plurality of first fins extending upward to dissipate heat in a first direction; and a second side comprising; a mounting surface for the circuit board; a fin wall surrounding the mounting surface, the fin wall comprising an inner surface to prevent the light from being emitted from the chassis in a direction from above less than a five degree angle below a reference plane intersecting a bottom surface of the chassis; and a plurality of second fins extending outward from an outer surface of the fin wall to dissipate heat in a second direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A lighting fixture comprising:
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a housing; a terminal block for supplying alternating current (AC) power; and a light engine comprising; at least one power connector to connect to the terminal block to convey the AC power; an AC to direct current (DC) power converter to; receive the AC power via the at least one power connector; and convert the AC power to DC power at a DC power level; a circuit board comprising; a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; and lighting optics to distribute the light emitted from the LEDs from the lighting fixture in a desired light pattern; and a chassis to mountably fit within the lighting fixture, the chassis comprising; a central portion; a first side comprising a plurality of first fins extending vertically upward from the central portion to dissipate heat in a first direction; and a second side comprising; a mounting surface for the circuit board; a fin wall depending from the central portion and surrounding the mounting surface, the fin wall comprising an inner surface to prevent the light from being emitted from the chassis in a direction from above less than a five degree angle below a reference plane intersecting a bottom surface of the chassis; and a plurality of second fins extending horizontally outward from an outer surface of the fin wall to dissipate heat in a second direction. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A light engine retrofit for retrofitting an existing light fixture having a lid comprising an opening, a retention clip, and at least one retention bracket, the light engine comprising:
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at least one power connector to connect to a power source of the existing lighting fixture to convey alternating current (AC) power; a current driver to; receive the AC power via the at least one power connector; and convert the AC power to direct current (DC) power at a DC power level; a circuit board comprising; a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; a plurality of optical lenses to disperse light, wherein each of the plurality of optical lenses is positioned over a different one of the LEDs; and a plurality of optical reflectors each positioned over at least one of the optical lenses to reflect the light dispersed by the lenses to create the desired light pattern; and a chassis comprising; a central portion; a first side comprising a plurality of first fins extending upward from the central portion to dissipate heat in a first direction; and a second side comprising; a mounting surface for the circuit board; a fin wall depending from the central portion and fully surrounding the mounting surface; and a plurality of second fins extending outward from an outer surface of the fin wall to dissipate heat in a second direction; wherein the central portion comprises a mounting interface for mounting the chassis to the lid of the existing light fixture, wherein an end of the mounting interface is configured to be positioned beneath the retention bracket such that the plurality of second fins pass through the opening, and wherein an opposite end of the mounting interface is configured to be secured to the lid by the retention clip. - View Dependent Claims (38, 39, 40)
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41. A light engine comprising:
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a driver assembly comprising; at least one power connector to connect to a power source to convey alternating current (AC) power; an AC to direct current (DC) power converter to receive the AC power via the at least one power connector and convert the AC power to DC power at a DC power level; and a processor to generate a control signal to control the AC to DC power converter to convert the AC power to the DC power at the DC power level; a circuit board comprising; a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; and lighting optics to distribute the light emitted from the LEDs in a desired light pattern; and a chassis comprising; a central portion; a first side comprising a plurality of first fins extending vertically upward from the central portion to dissipate heat in a first direction; and a second side comprising; a mounting surface for the circuit board; a fin wall depending from the central portion and surrounding the mounting surface, wherein an inner surface of the fin wall prevents the light from being emitted from the light engine in a direction from above less than a five degree angle below a horizontal plane intersecting a bottom surface of the chassis; and a plurality of second fins extending horizontally outward from an outer surface of the fin wall to dissipate heat in a second direction. - View Dependent Claims (42, 43, 44, 45, 46)
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47. A light engine for a luminaire, the luminaire comprising a housing and a terminal block for supplying alternating current (AC) power, the light engine comprising:
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at least one power connector to connect to the terminal block to convey the AC power; an AC to direct current (DC) power converter to; receive the AC power via the at least one power connector; and convert the AC power to DC power at a DC power level; a circuit board comprising; a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; and lighting optics to distribute the light emitted from the LEDs from the luminaire in a desired light pattern; and a chassis comprising; a central portion; a first side comprising a plurality of first fins extending vertically upward from the central portion to dissipate heat into an interior of the housing; and a second side comprising; a mounting surface for the circuit board; a fin wall depending from the central portion and surrounding the mounting surface, wherein an inner surface of the fin wall blocks the light from being emitted from the chassis in a direction from above less than a five degree angle below a horizontal plane intersecting a bottom surface of the chassis; and a plurality of second fins extending horizontally outward from an outer surface of the fin wall to dissipate heat directly into ambient air outside of the housing. - View Dependent Claims (48, 49)
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50. A luminaire comprising:
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a housing; a terminal block for supplying alternating current (AC) power; and a light engine comprising; at least one power connector to connect to the terminal block to convey the AC power; an AC to direct current (DC) power converter to; receive the AC power via the at least one power connector; and convert the AC power to DC power at a DC power level; a circuit board comprising; a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; and lighting optics to distribute the light emitted from the LEDs from the luminaire in a desired light pattern; and a chassis comprising; a central portion; a first side comprising a plurality of first fins extending vertically upward from the central portion to dissipate heat into an interior of the housing; and a second side comprising; a mounting surface for the circuit board; a fin wall depending from the central portion and surrounding the mounting surface, wherein an inner surface of the fin wall blocks the light from being emitted from the luminaire in a direction from above less than a five degree angle below a horizontal plane intersecting a bottom surface of the chassis; and a plurality of second fins extending horizontally outward from an outer surface of the fin wall to dissipate heat directly into ambient air outside of the housing. - View Dependent Claims (51)
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52. A light engine retrofit to retrofit an existing light fixture comprising a lid with an opening, the light engine retrofit comprising:
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a circuit board comprising; a plurality of light emitting diodes (LEDs) to emit light; and lighting optics to distribute the light emitted from the LEDs; and a chassis comprising; a central portion; a first side comprising a plurality of first fins extending upward from the central portion to dissipate heat in a first direction; a second side comprising; a mounting surface for the circuit board; a fin wall depending from the central portion and surrounding the mounting surface, the fin wall comprising an inner surface to prevent the light from being emitted from the chassis in a direction from above less than a five degree angle below a reference plane intersecting a bottom surface of the chassis; and a plurality of second fins to dissipate heat in a second direction; and a mounting interface to mount the chassis to the existing light fixture with the plurality of second fins of the chassis passing through the opening of the lid so that, when mounted, the plurality of second fins are exposed to air outside of the existing light fixture. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A light fixture comprising:
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a housing comprising an interior and a lid with an opening; a circuit board comprising; a plurality of light emitting diodes (LEDs) to emit light; and lighting optics to distribute the light emitted from the LEDs; and a chassis comprising; a central portion; a first side comprising a plurality of first fins extending toward the interior from the central portion to dissipate heat in a first direction; a second side comprising; a mounting surface for the circuit board; a fin wall depending from the central portion and surrounding the mounting surface, the fin wall comprising an inner surface to prevent the light from being emitted from the chassis in a direction from above less than a five degree angle below a reference plane intersecting a bottom surface of the chassis; and a plurality of second fins to dissipate heat in a second direction; and a mounting interface to mount the chassis to the housing with the plurality of second fins of the chassis passing through the opening of the lid so that, when mounted, the plurality of second fins are exposed to air outside of the light fixture. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71)
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Specification