SOLID-STATE LIGHT BULB HAVING AN ION WIND FAN AND A HEAT PIPE
First Claim
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1. A lighting device having the approximate shape of an A-series light bulb, the lighting device comprising:
- a bulb body;
a bulb cover coupled to the bulb body, the bulb cover defining a bulb cavity,a first heat sink having a plurality of fins defining a plurality of air passage channels;
a second heat sink having a plurality of fins defining a plurality of air passage channels, the first and second heat sinks being located substantially outside of the bulb cavity;
one or more light emitting diodes (LEDs) located inside the bulb cavity;
a heat pipe configured to transfer heat from the one or more LEDs to the first and second heat sinks; and
an ion wind fan to generate an air flow in the air passage channels.
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Abstract
An ion wind fan can be incorporated into a solid-state lighting device to thermally manage the lighting device. In one embodiment, the lighting device has the approximate shape of an A-series light bulb and an A-series light bulb and includes a bulb body, a bulb cover coupled to the bulb body defining a bulb cavity and one or more light emitting diodes (LEDs) located inside the bulb cavity. The lighting device further includes a heat pipe to transfer heat from the one or more LEDs to one or more heat sinks, and an ion wind fan to generate an airflow in impinging on the one or more heat sinks.
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Citations
21 Claims
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1. A lighting device having the approximate shape of an A-series light bulb, the lighting device comprising:
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a bulb body; a bulb cover coupled to the bulb body, the bulb cover defining a bulb cavity, a first heat sink having a plurality of fins defining a plurality of air passage channels; a second heat sink having a plurality of fins defining a plurality of air passage channels, the first and second heat sinks being located substantially outside of the bulb cavity; one or more light emitting diodes (LEDs) located inside the bulb cavity; a heat pipe configured to transfer heat from the one or more LEDs to the first and second heat sinks; and an ion wind fan to generate an air flow in the air passage channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A solid-state light bulb having a longitudinal axis comprising:
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a base at a first end of the solid-state light bulb, the base being adapted to connect the solid-state light bulb to a source of electricity; a bulb cover defining a bulb cavity at a second end of the solid-state light bulb, the second end being longitudinally opposite the first end, the bulb cavity containing one or more solid-state light devices; an electronics cavity located between the base and the bulb cavity, the electronics cavity containing electronics to operate the solid-state light devices; a heat sink having a downstream portion and an upstream portion, the heat sink being located between the electronics cavity and the bulb cavity; a heat pipe thermally coupled to the heat sink, the heat pipe configured to conduct heat from the solid-state light devices to the heat sink; and an ion wind fan located between the downstream portion of the heat sink and the upstream portion of the heat sink, wherein the ion wind fan generates an airflow that impinges on the heat sink. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification