An emergency lighting system with terminal holding function

Abstract

An emergency lighting system with an end holding function, comprising a switch (C1), a light-emitting drive device (C2), a light-emitting device (C3), a switch detection device (C4), an energy storage device (C5), and a low-impedance device (C6) . The alternating current is connected to the input end of the light-emitting driving device (C2) through the output end of the switch (C1), the input end of the switch detection device (C4) is connected in parallel with the input end of the light-emitting driving device (C2), and the output control end is controlled by the light-emitting driving device (C2). end connected. The light-emitting driving device (C2) is connected with the light-emitting device (C3) and simultaneously connected with the energy storage device (C5). The low-impedance device (C6) is directly paralleled to the power grid, at the front end of the switch, and is not controlled by the switch. When the switch is closed, there is commercial power, and the lighting device is powered by the commercial power. When there is no commercial power, the emergency lighting system uses the electric energy of the energy storage device (C5) to provide emergency lighting. If the switch is open, the emergency lighting system will not come on regardless of the presence or absence of utility power.

Description

[0001] Technical field [0002] The present invention relates to the field of lighting technology, in particular to an emergency lighting system with terminal holding function, especially to an emergency lighting system which is controlled by the original switch and does not make any changes to the original lighting circuit to realize the terminal holding function, that is, the switch is in the When the switch is on, the emergency light is on, and if the switch is off, the emergency lighting system does not work. Background technique [0003] At present, there are two types of traditional emergency lighting systems: [0004] One is the two-wire system, that is, the emergency lighting circuit is arranged separately from the general lighting system. No switch can be installed in the circuit. As long as the power is off, the emergency lighting system will automatically light up. The defect of this type of emergency lighting system is: expensive , The construction is troublesome,...

AI Technical Summary

Problems solved by technology

[0007] What the present invention aims to solve is to provide an emergency lighting system with terminal holding function for the above-mentioned two kinds of emergency lighting systems, which need to be wired separately, regardless of the time period, and when the power failure occurs, the emergency lighting system will be activated regardless of whether it is needed or not, resulting in waste.

In the event of a power failure, determine whether the switch is closed to determine whether to start the emergency lighting

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