All LED street lights currently in the design of the processor heat sink can be roughly summarized as aluminum extrusion heat processors, fin-type heat pipe cooling the processor and the processor of combined heat, cooling aluminum extrusion which processors are mostly Processor exterior parts exposed to light, the advantage of this approach is the cost of the processor in the heat can be more inexpensive, especially in mold development costs are more competitive, but during the high-wattage product development, the weight is a need to pay attention factor, because the public regulation of poles to withstand the stress, there will be certain restrictions, and therefore at high wattage products, are generally treated using fin-type radiators, or using heat pipe approach to application design heat treatment plant.
In addition to the development of the processor heat outside, LED street lights structure is another important role in the power supply, because the prevailing LED products for the DC-driven approach lights, and therefore the power supply must be customized on the vendor LED street lights for each style of product development dedicated power supply, but also have national product safety standards based on the differences in circuit adjustments to meet product sales around the world again when safety regulations. In recent years, we have three places LED streetlight project case experience, LED street light phenomenon accounted for most of the dead were the proportion of the power supply caused by the instability, so the stability of power supply products, will also affect LED street lights for outdoor use, is it within three years to maintain good control of the light fades.
Second, LED street lights in product development is an important technical threshold optical design capabilities, because good light distribution characteristics, allowing efficient LED street light evenly illuminated the road surface in the current Taiwan NS15233 standards, only For lights in a vertical 80 degree angle and 90 degree angle must be less than 30 and 10 glare quality requirements. In addition, the level of 65 to 95 degree angle, but also need to have more than a certain luminance limit requirements, the rest of the lighting technology, to see each product’s optical design capabilities, because the case will require some engineering road surface illuminance level limit , then a good optical design, the light extraction efficiency can make a little difference of LED street lights, the actual level of illumination of the road surface was good.
So no problem in quality and reliability of the situation, LED street lights of the competition to see the rest of the soft lighting performance show that the existing LED lamp products, most of all by the German giant OSRAM products used in street batwing wide two isotropic optical design, but in the light distribution design, each manufacturer has its own know-how or do not necessarily accept all of the lights can continue to strive to make the product more to improve the efficiency of road lighting.
Europe, the United States and other places of the LED standard, the same angle of light is required, the quality and the light fades and other requirements, with the LED street lights products, technical progress, we believe that the advent of more and better LED street lights to attract more public sector mining Share tenders to improve the visibility of the overall market LED street lights.
