High voltage incandescent lamp with low-pressure Kr/N.sub.2 gas

Details High voltage incandescent lamp with low-pressure Kr/N.sub.2 gas High voltage incandescent lamp with low-pressure Kr/N.sub.2 gas

1994-06-28

1996-07-16

Pascal, Robert

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Flashers

315291, 313643, 313636, H05B 3700

Patent

active

055370080

ABSTRACT:
An incandescent lamp which is operable at about 200-275 V is obtainable by enclosing a filling composition consisting of about 80-95% by volume of krypton gas and about 5-20% by volume of nitrogen gas in a glass envelope bearing a tungsten filament and an inner volume of about 0.2-1.2 ml/operating wattage in an amount of about 0.7-0.9 ml/ml of the inner volume. The incandescent lamp exhibits satisfactory luminous characteristics and an extended life expectancy without causing arc discharge even when operated at a voltage of about 200-275 V. Thus a lighting device which comprises such an incandescent lamp as the luminous source and a power source capable of energizing it at a voltage of about 200-275 V is very useful in general and special illumination.

REFERENCES:
patent: 3707643 (1972-12-01), Yannopoulos et al.
patent: 4005324 (1977-01-01), Dolenga et al.
patent: 4160929 (1979-07-01), Thorington et al.
patent: 4463277 (1984-07-01), DeCaro
patent: 4524302 (1985-06-01), Berlec
patent: 4752719 (1988-06-01), McEwan
patent: 4897578 (1990-01-01), Goad, Sr.
patent: 5126636 (1992-06-01), Masaki
Masanobu; Incandescent Lamp; Patent Abstracts of Japan; vol. 4 No. 9; M-089, 23 Jan. 1980.

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