Abstract: A thermostatic control LED thermal module includes at least one fan, a heat dissipation unit, a sensing unit and a controller. One side of the heat dissipation unit is mated with the fan, while the other side of the heat dissipation unit is attached to an LED unit. The sensing unit is electrically connected to the LED unit for detecting the temperature of the LED unit and generating a sensing signal. The controller is electrically connected to the fan and the sensing unit. According to the received sensing signal, the controller operates and processes to generate a control signal to control rotational speed of the fan so as to achieve an excellent heat dissipation effect.

Abstract: A rotatable heat dissipating device includes a heat-transfer element and a heat-dissipation element. The heat-transfer element includes a flat main body, a heat transfer section extended from one face of the main body. The heat-dissipation element includes base having a recess provided on one face oriented toward the main body, a heat radiating section, and a connecting section extended between the base and the radiating section. The main body is rotatably received in and connected to the recess of the base, enabling the rotatable heat dissipating device to flexibly connect to a heat-producing unit in different directions without the need of using any external adaptor. Therefore, the rotatable heat dissipating device provides upgraded heat dissipation efficiency and can avoid thermal resistance due to too many adaptors between different elements.