outdoor LED lighting design requirements

　　First, outdoor lighting designers must consider outdoor LED lighting work environment

　　LED outdoor lighting, as the work environment is more complex, affected by temperature , UV light, humidity, rainy rain , dust , chemical, gas and other natural conditions , over time, will cause serious problems to the LED light failure . Therefore be considered final , outdoor lighting designers should consider when designing these external environmental factors impact on LED outdoor lighting .

　　Second, the matter of outdoor LED lighting in the thermal material selection should be noted

　　Shell and radiator as a whole, to solve the LED heat transport problem, this approach is better, generally use aluminum or aluminum alloy , copper or copper alloys, and other alloys good thermal conductivity . Cooling air convection cooling, heat and strong wind cooling heat pipe cooling , ( jet refrigeration cooling a heat pipe cooling is similar , but the structure is more complicated. )

　　Shade selection is also critical of the design , the current use of transparent perspex, PC materials , the traditional lampshade is transparent glass products, product quality positioning choose exactly what kind of material with the design of shade , in general, outdoor lighting the shade is best traditional glass, it is to create a long life, the best choice for high-end fixtures . Use of transparent plastic , glass and other materials to make the shade, do interior lamp shade is better for outdoor life is limited , because the outdoor sunlight , ultraviolet radiation, dust , chemical fumes , diurnal temperature changes and other factors make shorten lamp life of aging , followed by contaminated easily clean , so to reduce the impact of transparency lamp light output .

　　Third, outdoor LED chip packaging technology

　　The current domestic production of LED lamps ( main street) and are based on more than 1W of LED strings to be assembled in parallel , this method is higher thermal resistance of advanced packaging technology products , is not easy to create high -quality fixtures. Or the use of 30W, 50W or more modules to be assembled in order to achieve the required power , the LED packaging materials useful in epoxy resin, useful silicone encapsulation. Difference between the two is : less temperature epoxy resin , a long time easy to aging . Silicone encapsulated the temperature better use should be selected .

　　Fourth, in the outdoor LED lighting heat sink design research

　　Radiator is a very critical one led lighting components , its shape , size , thermal contact surface area must be designed to benefit small radiator , led lamp operating temperature is too high , the impact of the luminous efficiency and lifetime , radiator too , consumption of materials to increase the cost and weight of the product competitiveness decline. Led lights is crucial to design appropriate heat sink .