Elevator car roof maintenance lighting system

One end of a toggle switch is connected with a positive pole of a working power supply, and the other end of the toggle switch is used for being connected with an inlet end of a delay turn-off switch or connected with one end of a wire; the outlet end of the delay turn-off switch is connected with the positive end of the lighting device; the other end of the connecting wire is connected with the lighting device positive end; the negative end of the lighting device is connected with a working power supply; the human body sensor outputs a human signal to the control end of the delay turn-off switch when detecting that a person is in the elevator car roof, and outputs an unmanned signal to the control end of the delay turn-off switch when detecting that no person is in the elevator car roof; when the control end of the delay turn-off switch receives a human signal, the inlet end and the outlet end of the delay turn-off switch are immediately connected; when the control end receives an unmanned ...