Mechanical "Waterproof Cooling Fan" on the origin of the roof, in 1830, a man named James Byron was inspired by American watches from the structure, the invention can be mounted on a ceiling, 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 Byron invention of machinery "Waterproof Cooling Fan" more refined, but also convenient to use. 1880, American Shule first blade mounted directly on the motor, connect the power supply, the blades rotate rapidly, cool breeze blowing bursts, which is the world's first "Waterproof Cooling Fan".