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US 2004/0201990 A1Published application
LED lamp
OwnerWilliam E. Meyerinventor
Life of this patent
Estimating the term…
Abstract
LED lamps may be effectively cooled with an atmosphere of high thermal conductivity. Hydrogen and helium are transparent gases with high thermal conductivity. Enclosing an LED light source in such a gas environment efficiently conducts heat from the LED thereby enhancing the LED's output and extending the LED's life.
Claims12
A lamp comprising:
- a solid-state light source mounted on a support structure;
- a light transmissive envelope enclosing the light source and support structure;
- an electrical input lead and a return lead passing into the envelope, and electrically coupled to the light source thereby providing electrical energy to the light source;
- and
- a low molecular weight gas fill enclosed in the envelope in thermal contact with the light source.
2 more elements
A lamp comprising:
- a light emitting diode (LED) light source mounted on a support structure;
- a glass envelope enclosing the LED light source and support structure;
- an electrical input lead and a return lead passing into the envelope providing electrical energy to the light source;
- and
- a helium fill gas of about 1×105 Pascals (1.0 atmosphere) enclosed in the envelope in thermal contact with the light source.
2 more elements
Dependencies are inferred from the claim text.