China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

HID street lights only carried out in a small range of dimming, LED street lamp can be completed within the range from the 0%~100% dimming control, can be based on the environment and traffic conditions sensitive light output, in order to ensure the lighting needs of the situation to reduce unnecessary energy consumption. Thus, about for a total lighting electricity consumption is about 15% to 20% of the road lighting, large-scale implementation of LED street lamp, on carbon reduction and energy conservation has important significance of street life directly affects the road lighting maintenance costs. The high-pressure sodium lamp life is usually about 2 million hours, the road lighting with the use of high pressure sodium lamp life expectancy only about 5000 hours, and high power LED life often 5-7 million hours of high-pressure sodium lamp and led uniform his definition is not the same. High pressure sodium lamp uniform life definition for "will a group of subjects source sample points to 50% damage to the number of times", and led uniform life is refers to "the number of tested sample to decay to 70% of the 50% of the number of times" if according to his definition of high pressure sodium lamp to measure led, life expectancy is 50000 hours led up to 1 00000 hours; if according to the definition of life led to measure high voltage sodium lamp reached for 2 million hours of high pressure sodium lamp only about 1 million hours of course, led long life is not the LED street lamp life. LED lamp life is by LED light source life and driving circuit of life with resolution and led and its driving circuit of life lies in lamp heat dissipation ability, circuit topology structure and electronic equipment to select a variety of elements. From the current level of skill, LED lamp life can go beyond the high-pressure sodium street lamp.

Because there is no consistent LED street lamp skills specification, not the same as the product of the general poor, maintenance is not easy to show the reasons for many of these problems, both the elements of the skills level, but also the impact of the concept of the fact that the LED street lamp is a system engineering. Because the LED light source and high pressure sodium lamp are essentially different, in describing the way LED lights with the traditional street is completely different. In addition to the description of the lamps and lanterns of the experience, but also the need for the function of LED has a full and deepen the know. Some street lamps manufacturers in still do not quite know status of LED road lighting manufacturing requirements and characteristics, follow the traditional street lamp depict ideas to describe the LED street lamp, in appearance still choose practice "snakeheads" shape, apply the concept of gas discharge lamp, thought will certainly power LED emission in the lamp holder can be satisfactory pavement lighting needs. According to such a way of thinking and production of LED street lamps, not to achieve practical LED street lamp equipped with a light to contain a light distribution (select the lens), two times with the light and the three. When the two light distribution can be satisfied with the demand of road surface brightness, illumination and uniformity, it is not necessary to carry out the three optical description. To meet the needs of road lighting, LED street lighting is necessary to complete the current study of many LED street lamp with light distribution, such as LED (i.e., lens package) with two light distribution, LED two times with light, but, no matter which kind of with the plan, still can not be scientific and reasonable, not the same level of low power, there is a large glare and surface brightness, illumination uniformity and other issues.