Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Load device temperature-modifying means combined with or...
Patent
1998-02-02
2000-09-05
Philogene, Haissa
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Load device temperature-modifying means combined with or...
315 60, 315 97, 315 49, 313493, 313634, H01J 744
Patent
active
061148091
ABSTRACT:
A planar fluorescent lamp having a resistive trace and optically transmissive cover electrodes is described. In one embodiment, the lamp includes an insulative lamp body with the transparent cover electrodes supported by the lamp cover. The resistive trace is supported by the base, either as an exterior resistive trace or within the lamp. The resistive trace acts as a heating element by producing heat in response to an electric current passed through the resistive trace. Because the resistive trace is in thermal contact with the lamp body, heat produced by the resistive trace heats the lamp, improving cold starting. The cover electrodes and, in some embodiments, the resistive trace, are used to control electric fields within the lamp body by applying voltage potentials between discrete cover electrodes or between the cover electrodes and the resistive trace. The controllable electric fields improve cold starting and uniformity of light during low light operation. In an alternative embodiment, the lamp includes an insulatively coated metal lamp body with a glass cover soldered thereto. In another alternative embodiment, the lamp includes two lamp covers with a fluorescent material sandwiched therebetween.
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Donohue Michael J.
Philogene Haissa
Winsor Corporation
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