D.C. Voltage fluorescent lamp

Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Plural discharge devices and/or rectifiers in the supply...

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Details

313197, 313493, 315 51, 315 59, 315335, H05B 4122

Patent

active

042727030

ABSTRACT:
A fluorescent lamp having a plurality of columns positioned in a generally uniform manner within the lamp envelope, each column having an electron emissive cathode mounted therein connected to a cathode leadwire. An anode member connected to an anode leadwire extends to the upper portions of each column. A conductive starter member is mounted within each column so as to provide a first gap between one of its ends and the cathode and a second gap between the other of its ends and the associated anode extension. A D.C. voltage is applied to the anode and cathode leadwires, the D.C. voltage being obtainable from an external A.C. source via a suitable voltage rectifier/multiplier circuit which is positioned within the re-entrant stem member of the lamp.

REFERENCES:
patent: 3194997 (1965-07-01), Waly
patent: 3666986 (1972-05-01), Lake
patent: 4010398 (1977-03-01), Meuwes
patent: 4158153 (1979-06-01), Eckberg

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