CHARGING SYSTEM AND POWER FAILURE DEVICE DETECTING POWER FAILURE OF LED LIGHT

摘要

In an emergency lighting apparatus, charging efficiency is increased by individually charging cells in a power storage unit. When a power failure or other situation occurs requiring the actual use of the emergency lighting device, the proper operation of the emergency lighting device is ensured. In particular, the disadvantage of additional wiring in a bulb-type lighting fixture and the disadvantage of grounding are addressed so that power can be continuously supplied to the emergency lighting device and the emergency lighting device functions properly.

主权项

1. A charging system of an LED light, comprising: a converter configured to transform common power input from the outside from DC power to AC power or from the DC power to the DC power; a power failure detection and determination unit configured to determine the power failure by detecting whether an electric wire receiving external power is a live wire; a charging unit selectively configured by a charging transformation unit transforming the input power of the converter to a predetermined value, and a charging circuit unit receiving the power supplied from the charging transformation unit to generate a signal controlling a charging current of a battery or an auxiliary power input terminal receiving external auxiliary power; a power storage unit configured by a battery electrically connected to the charging unit to charge the common power and a low voltage control unit configured to interrupt an electric output when the voltage of the battery is less than a predetermined value; an output transformation unit configured to transform the output power of the power storage unit to a predetermined value; a switching unit configured to determine and output the power input to the converter and the power storage unit by receiving the signal of the power failure detection and determination unit during the power failure in which the external power is not input and a selective control unit configured to receive an event signal according to an external sensor detection input; a constant current control unit configured to transform the output power of the selective control unit to a constant current; and an LED module installed with one or a plurality of LEDs electrically connected with the constant current control unit.