紧急照明灯是照明及防灾设备的一种，安装在建筑物内。与一般的灯具不同的是，内部装有蓄电池，平常由市电供电并对蓄电池充电。当停电时，则转由蓄电池供电提供照明，以让建筑物内的人可以安全疏散。

维基共享资源中相关的多媒体资源：紧急照明灯

An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. Emergency lights are standard in new commercial and high occupancy residential buildings, such as college dormitories. Most building codes require that they be installed in older buildings as well.