| 摘要 |
Disclosed is an electric lamp apparatus, and more particularly to an electric lamp apparatus, in which an electric lamp is configured to emit light with power charged in a battery when power is shut down, so that the electric lamp can be used as an emergency light and no additional work is separately needed for constructing the emergency light, thereby reducing costs, time and effort to be taken in constructing the emergency light. |
| 主权项 |
1. An electric lamp apparatus with an emergency light, comprising:
a first module comprises a power supply that supplies commercial power, the first module includes; a first converter that converts alternating current (AC) power supplied from the power supply into direct current (DC) power; in response to detection of a first enable signal, a first switch that is turned on to pass the DC power output from the first converter, the DC power being supplied to an electric lamp via the first switch; an electric lamp that emits light with the DC power supplied passing through the first switch; and a second module configured to apply the first enable signal to the first switch in order to keep the first switch turned on in response to detection of the power supply normally supplies the commercial power, and in response to detection of power shutdown, turns off the first switch and to receive power from a battery to make the electric lamp function as the emergency light when power shutdown occurs in the power supply, wherein the second module is an emergency light module, the second module further comprises: a shutdown sensor detects the power shutdown, in response to detection of the power shutdown, a pulse generator generates a pulse signal different in a frequency band from a frequency band of the commercial power, a rectifier rectifies the pulse signal, a filter passes the rectified pulse signal, a second converter converts the pulse signal passed through the filter into a DC signal, in response to detection of the power shutdown, a level sensor generates a first disable signal for turning off the first switch and generates a second enable signal for turning on a second switch, a booster boosts charged power of the battery up to an electric-lamp driving voltage as the level sensor operates; and the second switch is turned on to supply the boosted power to the electric lamp in response to detection of the second enable signal. |
