Measuring LED junction temperature: reasonable life and cost guarantee
The blister bulb made of LED strips can realize 360 ​​degree full angle light source without adding a lens, which makes people feel the return to traditional incandescent lamps. LED light bar lights have many application advantages, and there is a big whirlwind in the market, which is quickly accepted by users. The LED light bar lamp combines the traditional tungsten filament bulb manufacturing technology with the emerging LED technology, and uses the glass bubble inflation technology to seal the LED light bar in the glass bulb and fill the mixed gas inside to make it dissipate heat. In order to reduce the LED junction temperature, reduce light decay, and extend the life.
The junction temperature of LED strips under working conditions is the main factor affecting various performance indicators, and is also a key factor that seriously affects LED light decay and service life. These parameters are extremely important lighting quality evaluation indicators for general lighting. A consensus has been reached in the lighting industry.
The LED light bar is sealed in the glass bulb filled with the mixed gas. Only the two guide wires of the positive and negative electrodes are led out of the sealed glass bulb and connected to the driving power source. What method is used to test the junction temperature of the LED light bar lamp? Foot temperature measurement, infrared imaging, voltage method, etc. Obviously, the pin method cannot measure the temperature because the thermocouple cannot be bonded to the LED strip in the closed glass bulb; the infrared imaging method cannot detect the temperature of the surface of the LED strip through the glass casing; The law can solve the problem of testing. Recently, the company's LEDT-300B whole lamp thermal management system using the voltage method as the test principle has measured and analyzed an LED light bar bulb manufactured by a certain company, and obtained a lot of interesting data to share with you. see picture 1.
Home Ceiling Fan,Ceiling Fan Style,Modern Decorative Fan,Traditional Decorative Fans
Jiangmen MagicPower Electrical Appliances Co.,Ltd. , https://www.magicpowerfan.com