Air from the "Mini Air Cooling Fan" base up, spread out the wind box filled cavity, it will accumulate to a certain extent than normal atmospheric pressure outside the body cavity, so the formation of the wind. The rear end of the front end of a narrow cavity generous experience forced airflow inside the cavity toward the rear end of the broader movement, constantly "mutual squeeze" the air last only from a small slit in the "leak" out, continue to run for some time, this structure can gradually strengthen air pressure, so "Mini Air Cooling Fan" outlet air gap more quickly. Once the outlet flow rate, the effect of the formation of hair, it will cause the air box to follow the flow of air around it. On the one hand, "Mini Air Cooling Fan" will air on the back came from the supplement forward, to strengthen the central air effect, on the other hand, the wind outside the box will be because of the negative pressure air flow caused by coming together to complement and broaden the hair range. Various flow overlay, will form the base several times in the absorption capacity of the air blast effects.