Electric lamp and discharge devices – With temperature modifier
Patent
1997-06-18
1998-12-22
Patel, Nimeshkumar
Electric lamp and discharge devices
With temperature modifier
313 34, 313 35, 313 45, 313607, 313234, 315248, H01J 6504, H01J 6100
Patent
active
058523391
ABSTRACT:
An electrodeless light bulb assembly having a standard light bulb base located at one end of an extruded cylindrical heat sink including a set of elongated fins extending radially outward from an annular inner body portion. An electrodeless light bulb, excitation coil, and transparent cover for the bulb are located at the other end of the heat sink. A solid state electrodeless lamp driver circuit is thermally coupled to the heat sink and is located in a hollow inner space region formed by the inner body portion. The annular inner body portion also includes at least one but preferably a plurality of boiler/condenser heat pipes located around its periphery for thermally coupling the heat from excitation coil and the driver to the fins where heat is transferred to the air via natural convection. The excitation coil can be formed from a length of conventional electrical conductor or it can be formed from a length of heat pipe connected at one end to the driver and at the other end to the heat sink.
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"Heat Pipes For Electronics Cooling Applications", Scott D. Garner P.E., Electronics Cooling, vol. 2, No. 3, Sep., 1996, pp. 18-23.
Hamilton Robin E.
Kennedy Paul G.
Smith Raymond A.
Northrop Grumman Corporation
Patel Nimeshkumar
Sutcliff Walter G.
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