Led street lamp, photoelectric conversion efficiency is one of the most one of the key issues in the design of led street light, is also a led street lamp examination enterprise one of the important indicators street lamp lighting production enterprises, led lights such as encapsulation, lens light distribution and light interference problems will affect the led road
led street lamp, photoelectric conversion efficiency is one of the most key problems in the design of led street lamps, and evaluation of the led street lamp enterprise one of the important indicators of lamp. Led street lamp, photoelectric conversion efficiency will be affected by encapsulation, lens light distribution, the influence of the light interference problems. Therefore, mainly adopts the following two methods to improve the efficiency of led street lamp lights: one is the reasonable design of led street lamp light source encapsulation structure. Though a single way of luminous flux is greater than the COB encapsulation encapsulation way, but the COB packaging has good color temperature uniformity, low glare, small pollution, simple and efficient light distribution, when using the advantages of waterproof processing, therefore recommend COB encapsulation. Second, design the reasonable light distribution scheme. Street lamp light distribution design is ignored, causing the loss of too much light, greatly reduces the energy saving effect. Lens and the led light bulb packaging layout design is reasonable, the use of COB is the direction. Under the same condition, made of COB lights of photosynthetic efficiency utilization ratio is made from a single source of street lights up by more than 30%. Now 120 w street light effective lighting has more than 250 w high pressure sodium lamp, energy saving effect of 70% or more.