LED-based lighting system and method
First Claim
Patent Images
1. A lighting system, comprising:
- a member that comprises;
a concave channel comprising an optically reflective metallic surface that lines the channel; and
a plurality of protrusions disposed outside of the channel and running alongside the channel;
a row of light emitting diodes disposed in the channel, attached to at least one substrate contacting the metallic surface, and oriented to emit light onto the optically reflective surface, wherein the optically reflective surface is operative to reflect the emitted light outside the lighting system to create an illumination pattern outside the lighting system; and
wherein the plurality of protrusions are operative to dissipate heat produced by the row of light emitting diodes.
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Abstract
A lighting system comprises a row of light emitting diodes (“LEDs”) receiving electricity and producing light and heat. The row of LEDs can be located in a channel or a groove of a piece of material, such as an aluminum extrusion or a bent piece of metal. The channel can have an optically reflective lining, for example, providing either diffuse or specular reflection. Accordingly, the channel can reflect light emitted by the LEDs. The piece of material can also include a heat sink for transferring heat from the LEDs to air via convection or air flow. The heat sink can comprise fins or protrusions that facilitate convection.
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Citations
32 Claims
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1. A lighting system, comprising:
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a member that comprises; a concave channel comprising an optically reflective metallic surface that lines the channel; and a plurality of protrusions disposed outside of the channel and running alongside the channel; a row of light emitting diodes disposed in the channel, attached to at least one substrate contacting the metallic surface, and oriented to emit light onto the optically reflective surface, wherein the optically reflective surface is operative to reflect the emitted light outside the lighting system to create an illumination pattern outside the lighting system; and wherein the plurality of protrusions are operative to dissipate heat produced by the row of light emitting diodes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lighting system, comprising:
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a first light source disposed in a first cavity; a first member comprising; a concave, optically reflective first surface forming the first cavity; a second surface, opposite the concave, optically reflective first surface, comprising a plurality of first protrusions operative to dissipate heat produced by the first light source; and a slot disposed adjacent the first protrusions; a second light source disposed in a second cavity extending alongside the first cavity; and a second member extending alongside the first member and comprising; a concave, optically reflective second surface forming the second cavity; and a third surface, opposite the concave, optically reflective second surface, comprising a plurality of second protrusions, wherein the slot captures one of the second protrusions. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A luminaire, comprising:
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a first member comprising; a first channel providing a first surface that is reflective to visible light emitted from one or more first lighting elements disposed in the first channel; a plurality of first fins, disposed outside the first channel and extending generally parallel to the first channel, that are operative to convect heat from the first member to air; and a slot extending generally parallel to the first channel; and a second member comprising; a second channel providing a second surface that is reflective to visible light emitted from one or more second lighting elements disposed in the second channel; a plurality of second fins, disposed outside the second channel and extending generally parallel to the second channel, that are operative to convect heat from the second member to air; and a protrusion extending generally parallel to the second channel, wherein the protrusion is disposed in the slot. - View Dependent Claims (17, 18)
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19. An optical system, comprising
a first body of material that comprises: -
a first finned surface operative to dissipate heat produced in response to converting electricity into first light; a first concave surface operative to reflect the first light; and a slot running along the first finned surface; and a second body of material that is disposed adjacent the first body of material and that comprises; a second finned surface operative to dissipate heat produced in response to converting electricity into second light; a second concave surface operative to reflect the second light; and a protrusion running along the second finned surface, wherein the protrusion and the slot are keyed to one another. - View Dependent Claims (20, 21, 22)
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23. An illumination system, comprising:
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a body of material that comprises; a first surface contour that reflects light; a second surface contour that transfers heat to air via convection; a slot running adjacent the second surface contour; a protrusion running adjacent the second surface contour; and a light emitting diode, mounted to the body of material and disposed adjacent the first surface contour, operative to convert electrical energy into the light and the heat, wherein the slot of the body of material is keyed to a protrusion of a second body of material having a second light emitting diode attached thereto, and wherein the protrusion of the body of material is keyed to a slot of a third body of material having a third light emitting diode attached thereto. - View Dependent Claims (24)
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25. An illumination system, comprising:
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a plurality of extrusions extending alongside one another, each comprising; a slot extending lengthwise; a protrusion extending lengthwise; a concave channel extending lengthwise between the slot and the protrusion and lined with a reflective surface; and a plurality of heat dissipating fins extending lengthwise opposite the concave channel; and a plurality of rows of light emitting diodes, each row disposed in a respective one of the concave channels, wherein the slot of one extrusion captures the protrusion of another extrusion. - View Dependent Claims (26, 27)
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28. A lighting system, comprising:
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a member that comprises; a channel comprising an optically reflective surface; and a plurality of protrusions running alongside the channel; a row of light emitting diodes disposed in the channel and oriented to emit light onto the optically reflective surface; a heat conductive path, consisting of one or more solid materials, operative to conduct heat from the row of light emitting diodes to the plurality of protrusions; wherein the optically reflective surface is operative to reflect the emitted light outside the lighting system to create an illumination pattern outside the lighting system; and wherein the plurality of protrusions are operative to dissipate the conducted heat via convection.
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29. A lighting system, comprising:
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a member that comprises; a channel comprising an optically reflective surface; and a plurality of protrusions running alongside the channel; and a row of light emitting diodes disposed in the channel and oriented to emit light onto the optically reflective surface; wherein each light emitting diode in the row of light emitting diodes is mounted on a respective substrate that is in thermal contact with the member; and wherein the optically reflective surface is operative to reflect the emitted light outside the lighting system to create an illumination pattern outside the lighting system.
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30. A lighting system, comprising:
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a first member comprising; a first channel extending around a periphery of a luminaire and comprising a first optically reflective surface; a first plurality of protrusions running alongside the channel; and a groove running between two protrusions in the first plurality of protrusions; a second member comprising; a second channel comprising a second optically reflective surface; and a second plurality of protrusions running alongside the second channel, wherein a protrusion in the second plurality of protrusions is seated in the groove; a row of light emitting diodes disposed in the first channel and extending around the periphery of the luminaire, the row of light emitting diodes oriented to emit light onto the first optically reflective surface; wherein the first optically reflective surface is operative to reflect the emitted light outside the lighting system to create an illumination pattern outside the lighting system.
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31. A lighting system, comprising:
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a member that comprises; a channel extending to form a rectangle and comprising an optically reflective surface; and a plurality of protrusions running alongside the channel and disposed behind the channel; and a row of light emitting diodes disposed in the channel and oriented to emit light onto the optically reflective surface; wherein the optically reflective surface is operative to reflect the emitted light outside the lighting system to create an illumination pattern outside the lighting system.
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32. A lighting system, comprising:
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a member that comprises; a first channel comprising an optically reflective surface; and a plurality of protrusions running alongside the channel; a first row of light emitting diodes disposed in the first channel and oriented to emit light onto the optically reflective surface; a second channel adjacent the first channel; and a second row of light emitting diodes disposed in the second channel; wherein the optically reflective surface is operative to reflect the emitted light outside the lighting system to create an illumination pattern outside the lighting system.
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Specification