Gas and/or vapor discharge lamp

Details Gas and/or vapor discharge lamp Gas and/or vapor discharge lamp

1979-08-24

1981-07-07

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Electric switch inside evacuated or gas filled envelope

315 60, 315 72, 315104, 315124, H01J 744, H01J 1734, H01J 1978, H01K 162

Patent

active

042777259

ABSTRACT:
The invention relates to a high-pressure sodium lamp which is provided with a discharge tube having an external auxiliary electrode. The auxiliary electrode is switched off by a bimetallic switch in the operating condition of the lamp.
According to the invention the lamp also comprises a glow starter which in the operating condition of the lamp is switched off by means of the same bimetallic switch. This apparatus achieves in a simple manner, a large available voltage for igniting the discharge tube with an operating condition of the lamp in which no disturbance is experienced from any of the ignition auxiliary means.

REFERENCES:
patent: 3445721 (1969-05-01), Waymouth
patent: 3619710 (1971-11-01), Waymouth
patent: 4064416 (1977-12-01), Krense et al.
patent: 4117370 (1978-09-01), Jacobs et al.
patent: 4144475 (1979-03-01), Delen et al.
patent: 4179640 (1979-12-01), Larson et al.

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