LED emergency lighting technology difficulties

　　LED lighting applications in emergency is just getting started, the structural design of the drive circuit design choice , emergency and emergency lighting functions to be studied , especially in the reliability study of emergency lighting and emergency lighting standards still lagging behind . The main technical difficulties as follows :

　　1, LED packaging technology : a scientific and rational LED package structure , the key is to improve the technology and LED light source light extraction efficiency photoelectric conversion efficiency . Therefore, the rational design of LED packaging structure according to the requirements of LED emergency lighting , to minimize light failure to meet the cooling requirements is the difficulty of the LED light source design.

　　2, LED cooling technology : LED package thermal issues has become a constraint key factor in the development of high-power LED . To effectively solve the problem of high-power LED cooling , the use of effective cooling and packaging materials do not deteriorate , the LED heat conduction effectively , and solve the problem of bad light .

　　3, The secondary light distribution technology : emergency lighting is the most important parameter to meet the requirements of indoor lighting and emergency lighting , the main parameters are the average lux , illumination uniformity and maintain lighting time, by the second optical design , combined with LED light-emitting optical structural features, designed to meet the requirements to meet the photometric requirements for emergency lighting .

　　4, LED intelligent control technology : from the characteristics of the LED light source , the study of digital intelligent control and drive power. Research the best control method is suitable for the required emergency lighting mode ; research combined with a variety of sensor control, research suitable for emergency lighting drive power and reliable emergency power conversion technology .

　　5 , Emergency lighting testing methods, methods and related reliability price preparation and drafting standards .