Want to improve the efficiency of LED display to extend the life of the LED display, you must solve the LED heat problems, Dasheng light hope we must take seriously.
First, the fever principle:
Simply say that the input LED display power is only 20% - 30% into light energy, the remaining 70% can only be converted into heat energy consumption, so the LED display fever is very high.
Above a simple understanding of the heat principle, the following focus on the heat method to talk about it
Second, the heat is divided into before and after packaging
Before packaging: and Led chip cooling, mainly with the substrate and circuit selection and process-related, because any LED will be made of lamps, so the heat generated by the LED chip is always the final through the lamp shell to the air. If the heat is not good, because the LED chip heat capacity is very small, a little heat accumulation will make the chip's junction temperature increased rapidly, if the long-term work in the high temperature state, its life will soon shorten.
After the package, that is, we can operate the cooling method:
1, thermal plastic shell: plastic shell filled with plastic materials, plastic shell to increase the heat, heat capacity.
2, the air fluid mechanics using the lamp shell shape, to create convection air, which is the lowest cost to strengthen the cooling method.
3, the fan or fan lamp shell with longevity efficient internal fan to strengthen the heat, low cost, good effect. But to change the fan is trouble, do not apply to the outdoor, this design is relatively rare.
4, the use of heat transfer tube heat pipe technology, the heat from the LED chip to the shell cooling fins. In large lamps, such as street lamps are common designs.
In short, according to the above practice, your LED display will greatly improve the efficiency and service life!