Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1988-11-07
1990-04-10
O'Shea, Sandra L.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313493, H01J 1716, H01J 6134
Patent
active
049163523
ABSTRACT:
A fluorescent lamp structure having a light transparent jacket surrounding the lamp. The chamber between the lamp and jacket is filled with a fluid (or mixture of fluids) which transitions between the liquid and vapor phases. The fluid extracts heat when the lamp wall temperature rises above a predetermined temperature causing the fluid to vaporize. The fluid condenses to form a partial vacuum in the chamber below that temperature.
REFERENCES:
patent: 2300892 (1942-11-01), Harada et al.
Haim Elias S.
McGlasson Frank W.
Blumenfeld I. David
Cahill Robert A.
General Electric Company
Jacob Fred
O'Shea Sandra L.
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