Fig. 1a demonstrates the cooling system based on TEC. It composes of TEC and a radiator which includes cooling fins and a fan.
In the system, the LEDs, TEC, and the radiator are connected
through thermal conductivity of silicone grease. It can be seen that
the system is very simple and compact. And there is no need to
change the production process or materials of LEDs package, no
need to use the refrigerant, and it’s easy to package, due to the
small size and light weight. For comparison, Fig. 1b demonstrates
the cooling system without TEC.