Xianyang street lamps factory

Due to the LED lamps and lanterns has many characteristics, such as energy saving, environmental protection, long life and admired by the broad masses of customers. As a new type of green lighting lamps and lanterns, LED also has its weaknesses, light failure problem is still a thorny problem facing the LED, uninterrupted droop, the serious influence

because leds lamps have the characteristics of energy saving, environmental protection, long service life, therefore highly respected by the customer. As a new type of green lighting lamps and lanterns, light-emitting diodes (leds) has its own weaknesses. Light attenuation problem of light-emitting diodes (leds) are still facing tough questions. Continuous light attenuation seriously affect the use of led lights. Influence leds light attenuation causes include light-emitting diodes (leds) the quality of white light, led lamp bead work environment temperature and the design of the led lamp bead work electric parameters. 1. Light-emitting diodes (leds) the quality of the quality of white light led white light can be affect leds light attenuation is a very important factor. Choose the type of led light will affect the quality of the led lamp and light attenuation. For example, the same led white light, with 14 mil by white light section of the crystal element chip, and by ordinary made of epoxy resin, Bai Guangjiao and encapsulation adhesive primer encapsulation, light up the environment in 30 degrees. After 1000 hours, 70% of the data for light decay. If packed in type D low damping rubber, in the same aging conditions, one thousand hours of light attenuation is 45%; If packing type C low damping rubber, in the same aging conditions, one thousand hours of light attenuation is 12%; If the packing type B low attenuation, in the same aging conditions, one thousand hours of light attenuation for - 3%; If you type in a low damping rubber, in the same aging conditions, light attenuation within one thousand hours for - 6%. 2 light-emitting diode, led lamp bead work environment temperature can't stand the heat, the higher the temperature, the shorter the light-emitting diode life, the lower the temperature, led the longer service life. Light emitting diode ideal working temperature of course between negative 5 to zero. According to the individual leds for white light aging data, if there is only one led white light lights up, and the ambient temperature of 30 degrees, is individual leds for white light the lamp bracket temperature not more than 45 degrees. At this point, the service life of the light-emitting diodes (leds) would be ideal. If light 100 light-emitting diodes white light lamps at the same time, and the interval between them is only 11. Around 4 mm, then chy-tech leds for white light support temperature may not be more than 45 degrees, but in the middle of the headlamp unit who led white light could reach 65 - degree heat. At this point, the led light bulb is a test. Then, gathered in the middle of the led light will decay faster in theory, and the light around the pile of light-emitting diodes (leds) white light attenuation more slowly. Therefore, in the design of lamps and lanterns, heat conduction and thermal function should be strengthened. The lower the temperature, the longer the life of the light emitting diode. 3. Light emitting diode lamp bead work the design of the electric parameters according to the survey, in solar led lighting circuit design, light emitting diode drive current only 5 - general 10mA； With a large number of bulb products, for example, has more than 500 or more bulbs products, usually is only 10 - drive current 15 ma, and light emitting diode lamp drive current is only 15 18mA。 Very few people for more than 20 ma current design. Drive current is lower, the less heat emitted by leds white light. Of course, the less it light. In the design of ordinary light-emitting diodes lamp bead work electrical parameters, considering the effect of heat conduction and thermal. Above all, led lamp bead work the design of electrical parameters should according to actual situation. If the lamp's thermal conductivity and good heat dissipation function, increase the drive current leds light lamp. On the contrary, if the function of thermal conductivity and thermal lamp, it is best to circuit design smaller, so that we can release less heat.