Electric lamp and discharge devices – With temperature modifier – Electric heater
Patent
1976-03-22
1977-01-18
Demeo, Palmer C.
Electric lamp and discharge devices
With temperature modifier
Electric heater
313 17, 313 44, 313174, 313180, H01J 6124
Patent
active
040041719
ABSTRACT:
The invention relates to a gas and/or vapor discharge lamp which is provided with a discharge tube and an outer bulb which envelops this tube, whilst the heat insulation in the space between the discharge tube and the outer bulb can be changed.
According to the invention the heat insulation is changed by means of a reversible hydrogen getter which is located in the space between the outer bulb and the discharge tube. In this way it is obtained that the lamp can either be operated without a stabilizing ballast or that it is less sensitive to variations in the mains supply.
REFERENCES:
patent: 3946262 (1976-03-01), Keeffe et al.
Heuvelmans Jean Johan
Van der Werf Jan Evert
VAN Tongeren Hendricus Franciscus Joannes Jacobus
Berka George B.
DeMeo Palmer C.
Hostetter Darwin R.
Trifari Frank R.
U.S. Philips Corporation
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