Thermal Management of LEDs for Lighting Solution

Lighting is rapidly transitioning from conventional lamp resource such as high-pressure sodium, metal halide, mercury vapor, and fl uorescent to high brightness light-emitting diodes. Standard incandescent lamp have luminous effi cacy as 16 lm/W, whereas LEDs are expected to be 90 to 140 lm/W, with the life of LEDs to be 50,000 hrs. As effi ciency and drive current increase, the total lumens per emitter increases, reducing the initial cost of light and by providing energy savings. In LED lighting about 30% energy is distorted in light, whereas 70% is parting as heat. The junction to ambient resistance can be varied by using active cooling systems. Also the term used is Enhancement Factor (EF) of the active cooling devices. Good scope is observed in deviation of material and their combinations for effective thermal investigation. Variety of active and passive heat removal techniques are reported and hybrid systems are evolving. A range of aspects of thermal management, its need and scope is presented in view of developing LED lighting solutions for general household and corporation applications, which will be of great help for saving nation’s wealth, by saving power utilization in lighting the country.