"Tiny Cooling Fan" in the air in the form of the most widely used form of hair is down axial fan, why so popular is because of the combined effect of good and inexpensive. In addition, there will be the direction of axial fans, in turn, into a form of upward ventilation, this approach seems to be becoming more and more common recently. "Tiny Cooling Fan" Although widely used, but there are inherent flaws. Axial fan motor position by blocking the air flow is not flowing through the middle of the blast area, which is called "dead zone." In a typical heat sink, the highest temperature precisely the middle of the fin. Because of this conflict, the use of "Tiny Cooling Fan", the cooling effect of the heat sink is not sufficient.