Thermal baffle inside a discharge lamp

Details Thermal baffle inside a discharge lamp Thermal baffle inside a discharge lamp

1982-10-20

1984-12-25

Chatmon, Saxfield

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Load device temperature-modifying means combined with or...

313 33, 313609, 315 56, 315 65, H01J 744, H01J 1346, H01J 1978, H01J 2996

Patent

active

044906498

ABSTRACT:
The ballast temperature in the base up position of a miniature arc discharge lamp is reduced, increasing its lifetime, by placing a thin transparent thermal convection/radiation baffle between the arc tube and lamp filament, which are the heat source, and the interface of the envelope with the ballast housing. Greater temperature reduction is realized by putting insulation inside the housing cover and reducing the diameter of wires supporting the arc tube and filament, the latter a ballast resistor.

REFERENCES:
patent: 2171580 (1939-09-01), Macksoud
patent: 3400288 (1968-09-01), Groth
patent: 4273098 (1981-06-01), Silverstein

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