Represented by the airport terminal building large lighting space, the service life of the LED spotlights, light failure requirement is very high.
This is associated with the use of LED tube light, large quantities of large area of a medium-sized airport terminal need at least ten thousand led downlights.
And airport operations also determines the overall replacement frequency of lamps and lanterns should also shortest one in 56 years.
It also determines the airport using the LED tube light, droop control must be low enough, the service life of continue long enough (
The service life of at least 43800 h)
And to be certified as to shoulder the responsibility of the airport main lighting!
Here, let's look at what is the light failure phenomenon of lamps and lanterns: light source parts more than limit of heat-resistant phenomenon of irreversible damage to the LED light failure LED light failure is light source parts more than limit of heat-resistant irreversible damage to the phenomenon, in this case, the light intensity is unlikely to return to the initial numerical, LED light failure to the standards set by the industry of our country, the luminous flux is 5000 h hour retention & ge;
70% thought the lamps and lanterns is failure.
Flux decline is not equal to the LED light failure to be sure, from the operation principle of the LED, in the process of running, the light intensity will be as the chip junction temperature rising and falling, photosynthetic efficiency decreases, this is a semiconductor with the temperature change of the inherent physical properties.
As long as the LED light source parts shall not exceed the temperature limit and damage, LED to stop after being temperature recovery, its intensity numerical will bounce back, that is to say, the LED work no matter how long, as long as the initial intensity constant cannot be identified as light failure.
Only for some material damage is no longer restore failure phenomenon, belongs to the LED light failure.
The main cause of LED light source the light failure from light source system, the main cause of the LED light failure in fact, there are three, one is the chip quality, congenital deficiency causing tolerance;
Second, the cooling performance is not as, fail to heat dissipation, led lamp body, the temperature of the chip to exceed bid;
3 it is to drive the power quality problem, the excessive volatilization of the electrolyte, the impact on the performance of the drive power;
Four is colloid heat resistance is not enough, the average encapsulation adhesive and heat-resistant only 125 degrees Celsius, is easy to appear when running under the high temperature in colloid crack, carbide, resulting in the droop and chip separation.
To sum up, the
LED downlight with good quality, good heat dissipation performance chip, drive power long life, good colloidal and heat-resistant that his power, and achieve the superior effect of low light failure, and to better shoulder the responsibility of the main lighting, the airport has benefit of chongqing jiangbei international airport, and other airport, this LED downlight as airport lighting ivy league reputation.
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