In the process of determining the LED downlight life test, the main light source and power supply. So test the light source first and see if the protection level of the cavity protecting the LED beads is high enough, whether the chip junction temperature is within the designed safety range and the quality of the LED beads used. The lifespan of different lamp beads is also different. There are domestic and imported lamp beads, and different prices of lamp beads, there is a certain difference in quality. So when choosing the lamp beads, according to a variety of factors to choose. For the power supply, it depends on whether the design leaves enough margin, which is generally guaranteed to reach more than 50,000 hours.
LED downlight life test method
Conventional attenuation test, high temperature and high humidity life test, low temperature attenuation test, accelerated attenuation test, attenuation test at specified solder joint temperature
1. Five led lamps were placed at room temperature of 25℃ and tested for initial luminous flux, power, color temperature and other parameters according to the dependent input.
2. After the initial test is completed, these samples are placed in a compartment at a room temperature of 25°C and the lamp is powered on at the rated input voltage.
3. These samples were tested every 10 days for the first 3 months under the same conditions as the test downlight environment in the car, and the luminous flux of the test. power, color temperature, etc. are recorded and compared with the initial parameters.
4. After the test has been conducted for 3 months, the test interval is adjusted to a monthly parameter test and the data is recorded for comparison with the initial value.
Testing requirements for LED downlights
1. lamps in the life test, when the luminous flux decays to 70% of the initial value of luminous flux time, then the life of the sample, the average life of the led downlight is calculated by the average of the life of all samples.
2. LED downlight samples in the test process of the light point does not light up the phenomenon, then for its life time.
LED downlight life test is not a few days can be completed, led lamps and lanterns of the life of the test belongs to the long test. Our laboratory will regularly observe the luminous flux changes of the lamps and lanterns at regular intervals to ensure that the service life of each downlight is reliable.
Compared to the traditional street light life, LED lighting long lifespan is certain. But its specific life is also based on different environments, different materials, and different technologies, a variety of factors to determine its lifespan is also a combination of factors to determine.
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HUIZHOU FORYOU OPTOELECTRONICS TECHNOLOGY CO., LTD
Add: Foryou Industrial Park Area B -- Plant NO.6 No.1North Shangxia Road,Dongjiang High-tech Industry Park, Huizhou City,Guangdong Province
Tel: 0086-752-5300601
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