During the use of notebook computer heat dissipation, it is easy to cause the system performance to decline due to too high temperature.however, the temperature control heat dissipation fan currently designed in notebook computers generally has only one speed, and cannot adjust the wind speed according to the real-time temperature of the computer.problems such as slow cooling of the heat dissipation fan when the computer temperature is too high, too large fan opening when the temperature is low, large waste of electricity noise and the like will occur.

The invention discloses an automatic temperature control, temperature control and speed reduction device for a notebook computer radiating fan, which comprises an input unit, a central processing unit and an output unit. The input unit comprises a temperature sensor for measuring the temperature of a computer in real time, a keyboard input module and an infrared remote control input module, wherein the keyboard input module comprises a motor speed regulating input module and a parameter setting module which are used for manually setting the number of heat dissipation fan files; The central processing unit comprises a singlechip processor; The output unit comprises a temperature display module, a motor control module, an overtemperature alarm module and a fan cleaning reminding module. The fan blades of the fan are wrapped with thin soft plastic sheets, and the four corners of the outer box are pasted with thin soft plastic sheets.

The temperature of the notebook computer can be read out in real time, displayed on the computer screen, and the temperature value according to which the gear shift of the heat dissipation fan is artificially set according to factors such as seasons, environment and the like, so as to realize the self-starting and self-stopping and automatic gear shifting of the heat dissipation fan and the adjustment of the fan wind speed which can be controlled manually or without control.