The most direct way to improve the brightness of power led road lights is to increase the input power is bound to increase the input power in order to prevent saturation of the active layer must increase the size of the pn junction; junction temperature rise and thus make the quantum efficiency. Single-tube power increases depends on the device the ability to export heat from the pn junction to maintain the existing chip material, structure, packaging technology, the current density on the chip the same and equivalent thermal conditions, a separate increase the size of the chip junction area The temperature will continue to rise.
LED luminous efficiency is relatively low, causing the junction temperature rise, lower life expectancy. To improve life in order to reduce the junction temperature must be very great importance to the problem of heat dissipation. LED thermal design must start from the chip until the entire radiator, every aspect should be given full attention. Any aspect of poorly designed and will cause serious thermal problems. Led road lights in the long-term work in a lot of failure, more than half are caused by the lack of thermal design, the other half is caused by power failure. Therefore, the thermal design must be accorded full attention. With led high bay light efficiency is increased every year, the heat problem will be gradually reduced. I believe that one day we will see the emergence of LED lamps do not need the radiator!
Carbon reduction trend, driven by the LED lighting is the trend of non-file, and cooling technology, progress is more relevant to the popularity of speed and range, one can imagine, the future and more advanced cooling technology will continue to promote LED comprehensive lighting soon.