Lamp with an integrated flasher device

Details Lamp with an integrated flasher device Lamp with an integrated flasher device

1975-03-12

1976-08-17

Rolinec, R. V.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Load device and periodic electric switch

315 73, H01J 1978

Patent

active

039756599

ABSTRACT:
A lamp for installation in the flashers or winkers of motor vehicles, with a flasher device integrated into the lamp itself, is provided. The flashing is produced, in the case of the invention, by the utilization of substances which exhibit a sudden change in resistivity at a certain temperature. This is the case with powdered V O.sub.2 when formed into an aglomerate by the use of an organic binder. A block assembled in the bulb of the lamp and in electrical parallel with the filament, does not effect the incandescent state of the latter as long as a temperature of 68.degree. C is not exceeded, but effectively short-circuits the filament beyond this temperature. In this fashion, successive extinctions and relightings take place by a process of relaxation. In the case of a C.sub.36 H.sub.74 wax filled with conductive powder, the phenomena are reversed and the block must be connected in series with the filament.

REFERENCES:
patent: 2110690 (1938-03-01), Zierahn
patent: 3458756 (1969-07-01), Kotsch

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