Patent ID: 8558458

Claim:
An exit light which has function to indicate residual charge of a storage battery, the exit light comprising: a power input unit which receives a utilized voltage input, decreases the voltage input and applies the voltage input to a rectifier circuit unit; the rectifier circuit which transforms AC power applied from the power input unit into DC power and applies the DC power to a power supply unit; the power supply unit which applies the DC power applied from the rectifier circuit to a light emitting unit or a charging circuit; the light emitting unit which emits light by using the DC power applied from the power supply unit; the charging circuit which supplies the DC power applied from the power supply unit to a storage battery and charges the storage battery; the storage battery which is charged with the DC power applied from the charging circuit; a bar graph indicating unit which indicates a residual charge of the storage battery; and a check switch which, in response to switching-on by a user for checking, cuts off the utilized power and discharges the charge of the storage battery through the bar graph indicating unit so that the residual charge of the storage battery is indicated on the bar graph indicating unit.