Light emitting diode (LED) lighting device
DCFirst Claim
1. A light emitting diode lighting device comprising:
- a thermally conducting body having at least one opening that connects with at least one cavity within the body, wherein the thermally conducting body is symmetric with a central axis;
a plurality of light emitting diodes mounted in thermal communication with a face of the body and positioned around the opening;
at least one passage passing through the body from the cavity to an outer surface of the body and configured such that in operation air moves through the at least one cavity by thermal convection thereby to provide cooling of the body; and
a plurality of heat radiating fins extending from an internal surface of the at least one passage and the cavity to aid in dissipation of heat.
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Abstract
An LED lighting device comprises: a thermally conducting body having an at least one opening that connects with a cavity within the body and a plurality of LEDs mounted in thermal communication with a face of the body and positioned around the opening. One or more passages pass through the body from the cavity to an outer surface of the body and are configured such that in operation air moves through the cavity by thermal convection thereby to provide cooling of the body. Each passage is configured in a direction that extends in a direction at an angle of about 45° to a line that is parallel with the axis of the body toward the outer surface of the body away from the face. The body can be configured such that its outer surface has a form factor resembling an incandescent light bulb or halogen reflector lamp.
114 Citations
21 Claims
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1. A light emitting diode lighting device comprising:
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a thermally conducting body having at least one opening that connects with at least one cavity within the body, wherein the thermally conducting body is symmetric with a central axis; a plurality of light emitting diodes mounted in thermal communication with a face of the body and positioned around the opening; at least one passage passing through the body from the cavity to an outer surface of the body and configured such that in operation air moves through the at least one cavity by thermal convection thereby to provide cooling of the body; and a plurality of heat radiating fins extending from an internal surface of the at least one passage and the cavity to aid in dissipation of heat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21)
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17. A light emitting diode lighting device comprising:
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a thermally conducting body having at least one flue connecting an opening in the body with an outer surface of the body, wherein the thermally conducting body is symmetric with a central axis; a plurality of light emitting diodes mounted in thermal communication with a face of the body and positioned around the at least one flue opening; and a plurality of heat radiating fins extending from an internal surface of the at least one flue to aid in dissipation of heat; wherein the flue is configured such that in operation air moves through the at least one flue by thermal convection thereby to provide cooling of the body.
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Specification