Light emitting diode light source
First Claim
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1. A light source comprising:
- an elongate thermally conductive member having an outer surface, a first end, and a second end;
at least onea plurality of light emitting diodes carried on said elongate member outer surface;
one or more electrical conductors carried by said elongate thermally conductive member and connected to said at least one plurality of light emitting diodes to supply electrical power thereto;
andsaid elongate thermally conductive member being configured to conduct heat away from said at least one light emitting diode plurality of light emitting diodes to fluid contained by said elongate thermally conductive member;
wherein a back of each of said plurality of light emitting diodes is in thermal contact with a corresponding underlying portion of said elongate member outer surface;
wherein said elongate thermally conductive member comprises;
at least one opening at the first end that facilitates entry of fluid into said elongate thermally conductive member; and
at least one opening at the second end that facilitates convective movement of heated fluid out of said elongate thermally conductive member; and
a plurality of exterior fins added to said elongate member outer surface to conduct heat to fluid surrounding said plurality of exterior fins thereby facilitating convective heat dissipation.
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Abstract
A light source that utilizes light emitting diodes that emit white light is disclosed. The diodes are mounted on an elongate member having at least two surfaces upon which the light emitting diodes are mounted. The elongate member is thermally conductive and is utilized to cool the light emitting diodes. In the illustrative embodiment, the elongate member is a tubular member through which a heat transfer medium flows.
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Citations
53 Claims
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1. A light source comprising:
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an elongate thermally conductive member having an outer surface, a first end, and a second end; at least onea plurality of light emitting diodes carried on said elongate member outer surface; one or more electrical conductors carried by said elongate thermally conductive member and connected to said at least one plurality of light emitting diodes to supply electrical power thereto;
andsaid elongate thermally conductive member being configured to conduct heat away from said at least one light emitting diode plurality of light emitting diodes to fluid contained by said elongate thermally conductive member; wherein a back of each of said plurality of light emitting diodes is in thermal contact with a corresponding underlying portion of said elongate member outer surface; wherein said elongate thermally conductive member comprises; at least one opening at the first end that facilitates entry of fluid into said elongate thermally conductive member; and at least one opening at the second end that facilitates convective movement of heated fluid out of said elongate thermally conductive member; and a plurality of exterior fins added to said elongate member outer surface to conduct heat to fluid surrounding said plurality of exterior fins thereby facilitating convective heat dissipation. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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2. A light source comprising:
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an elongate thermally conductive member having an outer surface, a first end, and a second end; a plurality of light emitting diodes carried on said elongate member outer surface, at least some of said light emitting diodes being disposed in a first plane and others of said light emitting diodes being disposed in a second plane not coextensive with said first plane; electrical conductors carried by said elongate thermally conductive member and connected to said plurality of light emitting diodes to supply electrical power thereto;
andsaid elongate thermally conductive member being configured to conduct heat away from said plurality of light emitting diodes to fluid contained by said elongate thermally conductive member; wherein a back of each of said plurality of light emitting diodes is in thermal contact with a corresponding underlying portion of said elongate member outer surface; wherein said elongate thermally conductive member comprises; at least one opening at the first end that facilitates entry of fluid into said elongate thermally conductive member; and at least one opening at the second end that facilitates convective movement of heated fluid out of said elongate thermally conductive member; and a plurality of exterior fins added to said elongate member outer surface to conduct heat to fluid surrounding said plurality of exterior fins thereby facilitating convective heat dissipation. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 51, 52, 53)
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Specification