When the LED module heats up, to what extent does it affect the LED lamp, especially the life impact?
Generally speaking, LED modules are low voltage products. Unless you have a very tight number of lights, you have what you call modular heating. Now the LED module is more successful, it is difficult to appear dead light phenomenon. You can't buy cheap goods Usually power problems. I suggest you use a good point of power, it will not appear any problems
LED life is the thermostat, the accurate measurement of junction temperature need some professional test equipment for high power LED, generally light reached 30% the light end of life, if you use LED to purchase authentic production factory, can you recommend a method of estimation, namely according to the technical parameters of the given factory reckoning.
Generally determine the junction temperature of LED, to determine the intensity of LED light decay, that is, determine the lamp life. When the light reaches 70% end.
CREE a series of white LED, manufacturers nominal temperature is not greater than 85 degrees, the light source life of not less than 50000 hours, can be understood as manufacturers recommend that the temperature is not more than 85 degrees. Technical parameters indicate that the thermal resistance of LED /W 8.5 degrees, the working voltage of 350mA 3.2V, from the chip temperature for 8.5*0.35*3.2=9.52 degrees centigrade heat sink thermal resistance, and welding, light source module in the recommendations of the LED electrode position of solder joint temperature is not more than 85-10=75 DEG C. Of course, this is to consider the extreme circumstances, usually in doing the lamp when you want to leave a relatively large margin of safety
