Probably not an awful lot to add to the meaning of this gallery so, a smidgen of history.
It's believed that the very first hand fan appeared in India around 500BC. The first attempts at some form of air conditioning appeared in 17th century England, but it was the introduction of the electric fan in America in the 1880's that changed everything.
By the 1920's fans were being churned out by new industrial methods making fans cheap enough for the general public to own.
So, these days if you can't afford air conditioning, and many, many millions can't, get yourself a cheap and reliable fan.