What Is an Emergency Light?
Emergency lights are lights that indicate evacuation routes in the event of an emergency.
They are required to be installed in facilities with numerous people inside and with specific installation standards.
Emergency lights near emergency exits are accompanied by a sign. Most of them have a green background with a picture of a person jumping out of a door and are one of the most widely known signs.
Emergency lights are graded according to their dimensions. The grade used depends on the floor area of the building.
Uses of Emergency Lights
In the event of an earthquake, power failure, or fire, induction lights are installed so that third parties can evacuate to a safe place.
Emergency lights are classified into three categories: Emergency Lights for Evacuation Exits, Emergency Lights for Aisles, and Emergency Lights for Seats. Emergency Lights are used to indicate the presence of an emergency exit, while passageway emergency lights are installed to facilitate evacuation by stairs, etc. Emergency Lights for seats illuminate the feet of the audience and prevent them from lighting up to other areas, etc.
Principle of Emergency Light
Emergency Lights are mainly composed of a sign, a light, and a power supply.
The sign portion is used for emergency lights near emergency exits and is omitted for foot guide lights, etc. The power supply portion is used for emergency lights near emergency exits, etc. Highly permeable materials such as acrylic are used. Light from the lighting portion is transmitted through the back surface, making it easier to see even during power outages.
In the past, fluorescent lamps were used for lighting. Fluorescent lamps were lit via ballasts. However, due to the Mercury Pollution Control Law, many fluorescent lamps containing trace amounts of mercury were discontinued. In recent years, LED lamps have been widely used because of their low energy loss and simple structure.
The power supply part normally accepts commercial power to emit light, but in the event of a power failure, it switches with the battery part to supply power to the lighting part. Emergency Lights that function during disasters are required to operate for several tens of minutes on batteries.