Solar energy lamp of 20 meters high

LED used in road lighting device is involved in material development, the optical structure design, packaging materials, drive circuit, development of lamps and lanterns, lighting and visual matching, multidisciplinary cross high technology fields such as test method. As LED production technology mature,

leds in the application of road lighting is a high-tech field, relates to the development of material and devices, optical structure design, packaging materials, drive circuit, development of lamps and lanterns, lighting and visual matching, detection methods, and other areas of the multi-disciplinary cross. With the development of light-emitting diode production technology, compared with the traditional light source, light emitting diode has a long service life, good color rendering, high photosynthetic efficiency, luminous intensity, and the advantages of similar to point source, which determine the light-emitting diodes (leds) has the potential to enter the field of road lighting. In order to better promote the white light leds in the application of road lighting, it is necessary from the theoretical height and depth of the practice of white light leds secondary optical design, thermal management, driving power and comprehensive study on the key technology and comprehensive balance, to fully embody energy-saving advantages of white light leds, popularization of white light led street lamp. Compared with the indoor LED lighting products, solar LED street light is much more complex. Design scheme of solar led streetlight applications including lighting requirements, determine the design goal, estimates - light Electric - Heat integrated features, calculate the number of leds, choose the best design scheme, etc. Among them, the thermal characteristics of solar led street lamp system design research is the focus of scientific research units and enterprises at home and abroad the most. In terms of the secondary light distribution, based on the principle and the edge of the light source the law of conservation of extension, the mapping method of separation of variables to solve a free-form surface solar led street lamp light distribution structure parameters. In terms of heat dissipation, using microarray or heat pipe system, cooling system by using numerical simulation method to calculate the temperature of the different types of solar led street lamp power field, thus get the best working temperature of street lamp system. In terms of drive, light - light emitting diode (led) light emitting diode drive circuit design Electric - Heat integration theory as the instruction, broke through the traditional active drive circuit system, the design principle of the novel passive try pioneering in the field of street lamp light emitting diode drive circuit system application, make the circuit system has the characteristics of longer life, more environmental protection. In terms of detection, the transient thermal response characteristics and the combination of structure function theory, analyzes the thermal resistance of each material - in the system The heat capacity properties. Although in solar led street lamp system have done some research work, but how to overall consideration of solar led street lamp system of light distribution effect, thermal and electrical properties, so as to realize the optimal coordination of light, heat, electric performance and optimization, still need a lot of research and analysis.