"Waterproof Cooling Fan" means a hot day so as to take cold wind fan utensils, electric drive is a device to generate airflow, fan energize within the configuration later to rotate into the wind to achieve natural shade effect. Mechanical roof fan originated, in 1830, a man named James Byron was inspired by American watches from the structure, the invention can be mounted on a ceiling, "Waterproof Cooling Fan" with a spring-driven mechanical fan. This fan blades rotate slowly bring cool people feel happy, but have to climb the ladder to the winding, very troublesome. In 1872, a Frenchman named Joseph has developed a turbo start by clockwork, gear drive chain means mechanical fan, this fan than mechanical fan Byron invention more sophisticated, use is also convenient. In 1880, the first time the Americans Shule blade mounted directly on the motor, "Waterproof Cooling Fan" connect the power supply, the rapid rotation of the blades, cool breeze blowing, which is the world's first fan.