Caution lamp circuit and caution light using same

Abstract

The invention relates to a caution lamp circuit and a caution lamp using the same. The caution lamp circuit comprises an external power supply (100) for supplying power to a load and an internal power supply circuit (20) used for supplying power to the load when the external power supply (100) is unexpectedly cut off. The caution lamp of the invention comprises a lamp body (30), a light emitting body arranged in the lamp body (30) and the caution lamp circuit (40) used for supplying power to the light emitting body, wherein the caution lamp circuit (40) comprises the external power supply (100) for supplying power to the light emitting body and the internal power supply circuit (20) used for supplying power to the load when the external power supply (100) is unexpectedly cut off. In the caution lamp circuit and the caution lamp, when the external power supply is unexpectedly cut off, the internal power supply circuit can be used to supply power to the load, so that the lamp caution can still work normally.

Description

technical field [0001] The present invention relates to lamps, and more particularly, to a warning light circuit and a warning light using the circuit. Background technique [0002] Existing warning lights, such as fixed or mobile warning lights used in airports, stations, docks, etc., are generally directly connected to external power sources and powered by external power sources. But when the external power supply is cut off due to an accident, the warning light will not work normally, which will affect the aircraft take-off and landing signal indication, or the normal operation of the motor vehicle at the station and the wharf, and even cause serious traffic safety accidents. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a warning light that can still work normally when encountering an unexpected power failure of the external power supply, aiming at the defect that the warning light in the prior art cannot w...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a warning light that can still work normally when encountering an unexpected power failure of the external power supply in view of the defect that the warning light in the prior art cannot work normally after encountering an unexpected power failure of the external power supply. lamp circuit

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