The solar fan cap with three fans is a good thing. Three small fans can provide more ventilation to the head, and the larger the blade area, the stronger the wind force. A solar fan hat places a battery on top of the hat to absorb energy from solar radiation that hits the hat. A hat that turns the motor and fan.
How to use the fan hat.
There are two types of solar water heaters.
First, the non-pressure type, which is the type installed on the roof. This water heater is inexpensive.
2. The pressure water heater, the one installed on the balcony, is more expensive. The price difference is about 1,500 yuan. The main reason is that the manufacturing process is different and the cost is different.
It runs on solar energy and the small fan will turn in the sun.
The hat is a frequent itemnt worn in daily life. It can provide sun protection and a beautiful appearance. However, because summer is too hot, even though ordinary hats can provide sun protection, they are still uncomfortable. very hot. The Chinese patent (200720028463.4) describes a hat with a fan. There is a solar panel on the top of the hat, a fan on the bottom of the tongue, a switch on the fan, and the solar panel and the fan. are electrically connected. When it's hot, turn on the switch to allow the solar panel to power the fan, which makes the fan work and achieves a cooling effect.
However, the hat fan with fan in the above-mentioned prior art can only be attached to a certain hat, so the same hat can only be worn every day, it therefore needs to be improved. .