Variation of power levels within an LED array
First Claim
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1. A lighting device comprising:
- (a) an LED assembly comprising;
(i) a central member made of a thermally conductive material;
(ii) a plurality of LED modules connected to a central portion of the central member; and
(iii) a plurality of LEDs disposed in a radial array about the vertical axis of each LED module, wherein the heat generated by the LEDs is transferred through the LED module to the central member;
(b) a power source for providing electrical power independently to each LED module to allow the LED modules to operate at different power levels; and
(c) a hollow, approximately cylindrical member positioned around the LED assembly.
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Abstract
A lighting device having a plurality of high flux LEDs mounted on a heat sink and surrounded by a diffuser and a power supply that provides independent power to individual sets of the LEDs. The heat sink serves to transfer heat from the LEDs to the outside environment. In one embodiment the lighting device is positioned within a fresnel lens to produce a distribution of light.
88 Citations
29 Claims
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1. A lighting device comprising:
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(a) an LED assembly comprising;
(i) a central member made of a thermally conductive material;
(ii) a plurality of LED modules connected to a central portion of the central member; and
(iii) a plurality of LEDs disposed in a radial array about the vertical axis of each LED module, wherein the heat generated by the LEDs is transferred through the LED module to the central member;
(b) a power source for providing electrical power independently to each LED module to allow the LED modules to operate at different power levels; and
(c) a hollow, approximately cylindrical member positioned around the LED assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A lighting device comprising:
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(a) an LED assembly comprising;
(i) a central member made of a thermally conductive material;
(ii) a plurality of LED modules connected to a central portion of the central member, wherein each LED module has a plurality of vertical surfaces on an outside perimeter of the LED module; and
(iii) a LED secured to each vertical surface of the LED module, wherein the heat generated by the LEDs is transferred through the LED module to the central member;
(b) a power source for providing electrical power independently to each LED module to allow the LED modules to operate at different power levels; and
(c) a hollow, approximately cylindrical member positioned around the LED assembly. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification