Patent ID: 11923720
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 17:
18. The emergency light according to claim 9, wherein the two input terminals comprise a first input terminal configured for receiving a live wire signal of the home power supply and a second input terminal configured for receiving a null wire signal of the home power supply; the emergency lighting control circuit comprises a second integrated chip, a first transistor and a second transistor, the second integrated chip comprises a first pin, a second pin, an enable pin, a first battery pin, and a second battery pin, the first pin is connected to the first input terminal, the second pin is connected to the second input terminal, the enable pin is connected to a control terminal of the first transistor, a first terminal of the first transistor is connected to a control terminal of the second transistor, a second terminal of the first transistor is grounded, a first terminal of the second transistor is connected to a first battery pin, a positive electrode of the battery and the other end of the main lighting unit, a second terminal of the second transistor is connected to the end of the at least one light element and an end of the divider away from the main lighting unit, a negative electrode of the battery is connected to a second battery pin,
when the home power supply is normal, the first transistor and the second transistor are turned off under the controls of the second integrated chip, the voltage of the other end of the main lighting unit is provided to the battery to charging the battery;
when the home power supply failure occurs, the second integrated chip turns on the first transistor, and the second transistor is turned on, the battery provides the second driving signal to at least one lighting element such that the least one lighting element emits lights.