Led-based replacement for fluorescent light source
AssigneeBridgelux, Inc.
InventorsGhulam Hasnain, Calvin B. Ward
Life of this patent
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Abstract
A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.
Claims24
1-14. (canceled)
A light source comprising:
- a substrate having a first surface;
- and
- a plurality of light emitting diodes (LEDs) mounted on the first surface of the substrate, with the plurality of LEDs being spaced apart from each other, such that the plurality of LEDs are configured to generate less than 2 watts per second of heat on any square inch of the first surface of the substrate during operation of the plurality of LEDs.
A light source comprising:
- a substrate having first and second opposing metallic surfaces in thermal communication with each other;
- and
- a plurality of light emitting diodes (LEDs) mounted on the first metallic surface of the substrate, with the plurality of LEDs being spaced apart from each other, such that the plurality of LEDs are configured to generate less than 2 watts per second of heat on any square inch of the first metallic surface during operation of the plurality of LEDs.
Dependencies are inferred from the claim text.