| 摘要 |
<p>A Light Emitting Diode (LED) lamp emergency module is provided, and the LED lamp emergency module includes a chargeable battery, and also includes a current conversion unit, a conduction unit, a delay unit and a charging unit. A LED lamp emergency circuit and a LED lamp emergency system are also provided. When alternating current flows into the LED lamp emergency module, circuit and system, a power supply starts working, and all the LED lamps light; and when the alternating current is cut off, the power supply stops working, and the emergency circuit starts working to implement illumination emergency. The technical solution enables people to quickly distinguish a condition of normal illumination from a condition of power off illumination emergency, thereby making a response quickly, and the technical solution is convenient and reliable, and is widely used in the situation where illumination is required and corresponding measures need to be taken in time when the electricity is cut off.</p> |
