Zen city street light car leasing

Now more and more city LED street lamps, high pressure sodium lamp as light source of the traditional street lamp is gradually replaced. But the LED lights on the market at present the quality level is uneven, so choose a good quality LED street lamp is very important. And LED street lamp power is LED road

now, LED street light in the city is becoming more and more use of high pressure sodium lamp as light source of the traditional street lamp is gradually being replaced. Currently on the market, however, the quality of the led street lamp level is uneven, so choose a good quality of led street lamp is very important. The power of the LED street lamp is an important part of LED lights. When we choose our LED street light, the power supply must meet the four requirements:

in the first place, the power of the LED lights must be constant current characteristics of the LED street lamp lighting material determine its impact on the environment. For example, if the temperature changes, light emitting diode current will increase. In addition, the light emitting diode voltage will increase. If long-term running more than rated current, the service life of led lamp bead will be greatly reduced. LED street lamp power supply, constant current and environmental factors, such as temperature, voltage changes to ensure the operation of current value. two LED street lamp power supply, constant current precision constant current precision of some power supply on the market, the error may reach & plusmn8 %, and constant current error is too large. General requirements are & plusmn3 %. According to 3% of the design. Production of power supply should be fine-tuning to achieve & plusmn3 % error. Three, led street lamp power supply voltage generally light-emitting diodes (leds) recommend the working voltage of 3. 0 - 3. 5 v。 。 After the test, most of the work in 3. 2 v, therefore based on 3. 2 v calculation is reasonable. N the total voltage series lamp bead = 3. 2 * n four. The suitable working current of led street lamp power supply, for example, the rated working current of led street lamp is 350 mah. Some leds lamps manufacturers began to use it, the design of 350 ma. In fact, the electric heat flow work is very serious. After a lot of contrast test, the design of 320 ma is more appropriate, can minimize heat, will be more electric energy into visible light. LED street lamp power supply must meet the above four requirements, can be considered to be the power of the qualified. In addition, when choosing led street light, we must not only pay attention to the power supply, and fully understand the other components of constitute led street lamps, choosing the high quality led street light.