Integrally ballasted electrodeless fluorescent lamp

Details Integrally ballasted electrodeless fluorescent lamp Integrally ballasted electrodeless fluorescent lamp

1975-12-18

1976-10-19

Smith, Alfred E.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

313 45, 313 46, 313491, 313493, 315248, 315276, 315348, H05B 4124

Patent

active

039873340

ABSTRACT:
An electrodeless fluorescent lamp, suitable for substitution in place of existing incandescent lamps, comprises a gas filled toroidal envelope assembly removably mounted around a cylindrical ballast assembly. The ballast supplies radio frequency energy which induces electric current flow within the envelope and stimulates the emission of visible light. A toroidal transformer, which may have a ferrite core, is contained within a constriction on the envelope toroid and couples the energy to the gas. Heat generated within the envelope and transformer is conducted through the ballast to a radiator. The heated surfaces of the ballast and envelope form a chimney which induces air flow over the radiator.

REFERENCES:
patent: 966204 (1910-08-01), Hewitt
patent: 2030957 (1936-02-01), Bethenod et al.
patent: 2118452 (1938-05-01), Lebel
patent: 3500118 (1970-03-01), Anderson
patent: 3521120 (1970-07-01), Anderson
patent: 3551742 (1970-12-01), Gruzdev et al.
patent: 3611009 (1971-10-01), McNeil

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