LED street lamp development status and trend analysis
The current launch of the LED lights, product appearance, LED luminous particles arranged in the way and the number of rectifier circuit size and internal design varied. Such as: single tube power varies, 1-5W range; light distribution of different, there are bat-shaped, rectangular, butterfly airfoil; optical treatment with built-in lens-free secondary processing and secondary optical processing ; Drive the situation with a dedicated driver IC and no electrolytic capacitors; encapsulation situation with multi-chip package and single-chip chip package; technical line conditions are modular, group-type high-power, chip integrated high-power, dot matrix high power.
Power supply assembly also comes with integrated and external power supply two, cooling technology also has its own merits, which gave universal use after the operation and maintenance work has brought great inconvenience, does not meet the municipal public facilities standardization, general design principles.
Optical design, heat dissipation is the main technical problems facing LED lights. Although the development of high-power LED street lamp development speed is very fast, but in the application of varying degrees there is a low level of low flow, the second level of light treatment is low, the system light efficiency is low, light failure fast, short life, color temperature deviation , Light color is different, the drive more than a series of problems such as failure. One of the secondary optical design, thermal design and power regulator system design and other major technical issues, is to improve the luminous efficiency and extend the life of the key. At present, the radiation form of LED is Lambertian, side shot type, bat wing type, rectangular, butterfly wing and condenser type several. Through the secondary optical design, making the LED light range, photometric curve in line with the needs of road lighting.
China LED road lighting market mainly by government demonstration project procurement, policy dependence is high. In addition to the LED street lamp itself performance and installation costs of its market impact, the perfect market environment and mature business development model has become the key to the healthy development of the market.
With the technology continues to mature, LED lights have become increasingly prominent energy-saving effect, in particular, LED intelligent control features not only strengthen the advantages of LED street lamp products, greatly enhance the road lighting system energy-saving space. Therefore, in the current context of energy-saving emission reduction, the local government widely promote LED street lamp products.
Benefit from the government key project procurement, LED street lamp construction to continue large-scale promotion and other positive factors, LED street lighting series index recently showed a continuous upward trend, greatly stimulated the LED street lighting market.