How to judge the service life of LED street lamp?

What is the service life of LED street lamp depends on ? How judge the service life of LED street lamp? People at the time of choose, in order to avoid the frequent replacement, so choose the lamps and lanterns of service life is long, but in the judgment of the service life of lamps and lanterns, no certain rules can be found, only more experience to judge.


First of all is to see whether protect the LED lamp bead cavity protection grade is enough;Chip junction temperature is within the scope of the safety of the design and the LED lamp bead quality.For the power supply, to see whether its design is to keep enough allowance, ensure the life of 50000 hours.
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Of course, also can through the enterprise approved by the national testing agencies or test report, the selection of key components ,and the related data and the theoretical of LED street lamp life and  enterprise credibility to the comprehensive judgment of its authenticity. LED lamp bead LM80 report and the temperature of authority (including pin) report, according to the numerical value can be calculated.
   
You also according to the LED street lamp droop curve to determine the life , actually in the outdoor lighting conditions, different LED street lamp light failure did not regularity, different type of lamps and lanterns, light decay curve exist differences.

Only depend on light decay curve to predict life of LED street light, low reliability and incredible rate. And lamps and lanterns of seal structure design, the selection of sealing materials, optical protective material will have direct effects on the reliability of lamps and lanterns and light failure.

Power despite is the most easy to damage the parts of LED street light, but through the reasonable power supply design and cavity temperature increase lightning protection against surge protector can greatly improve the LED street lamps reliability.

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