Emergency lighting system is an important safety facility in the modern public buildings and industrial buildings, which is closely related with the personal/building safety. When fire or other disaster happened, the central control system will cut off power. Then emergency LED Panel Light system will come into work, playing an important role to evacuation, fire-fighting and rescue works. The continuous development of LED lighting technology and applications can change the status quo of lacking of standard general/emergency lighting products. Combined with the implementation of the national emission reduction plan, manufacturers start to develop new civil emergency semiconductor lighting products with energy-saving and environmental-friendly features. These lamps can provide sufficient luminance and lighting time for escape, rescue and rehabilitation of the power system in the event of an emergency. Engineers also developed special emergency lighting products with self-energy-generation function, portable, easy to operate, reusable, with self-protection function.
In fires, earthquakes and other natural disasters, emergency lighting devices/equipments are necessary for escape and relief. It is estimated that, in the next three years, the total demand of semiconductor lighting products will reach up to more than 2 billion yuan. With the continuous growth of China’s economy, the social safety awareness and safety standards have been greatly improved, increasing the market demand and requirements for emergency lighting devices. These products not only need to satisfy basic requirements of emergency products, but also need to be more energy-efficient, user-friendly, reliable and durable. All this additional requirements give semiconductor lighting applications a large developing space.
Recently Beijing University released a new research topic: “Studies of efficient driving technology and reliable system of emergency lighting applications”. This topic intend to breakthrough key technologies in the industrialization of LED emergency lighting applications, improving the semiconductor lighting industry chain. This study will concentrate on the power supply development of LED emergency lighting applications, lamp body design, secondary optical light distribution design, overall thermal design, special driver, intelligent control system for LED emergency lighting applications. The major assessment indicators are: the luminous efficiency of LED light source should be larger than or equal to 100lm/W; thermal resistance should be less than 9 ℃ / W; the luminous efficiency of the whole lighting fixture should be larger than 80lm/W; color temperature: 3000-6000K; CRI: larger than 80; power factor: larger than 0.9; the current THD should be less than 20%; the power conversion efficiency should be larger than 80%.