Emergency lighting fixtures are composed of several parts, including light source, light source driver, rectifier, inverter, battery pack, and sign lamp housing. Normally, 36V drives the light source to illuminate normally through the light source driver, while supplementing the battery pack with electricity through a rectifier. Even if the lighting is turned off after work, the rectifier still operates in a charged state, so that the battery pack is always in a full combat readiness state. When encountering an emergency situation and the mains power suddenly stops, the inverter will automatically start the inverter circuit, converting the low voltage energy of the battery pack into high voltage energy, and driving the light source to continue lighting.

Emergency lighting is different from ordinary lighting, which includes three types: backup lighting, evacuation lighting, and safety lighting. The conversion time is determined based on actual engineering and relevant regulations. Emergency lighting is an important safety facility in modern public and industrial buildings, which is closely related to personal safety and building safety. When a fire or other disaster occurs in a building and the power supply is interrupted, emergency lighting plays an important role in personnel evacuation, fire rescue work, and the continued operation or necessary operational disposal of important production and work.