Sunshine elf / glass window cleaner

“Sunshine elf” is designed to be a robot that could clean windows automatically by using solar energy. By utilizing solar power, it could produce negative air pressure, which makes 4 suckers fixed on the windows. There is a detector in the body bottom, and the fixed axle on the top of sucker is flexible and movable with linkage. In addition, by the combination of diluting the detergent and water, diminishing the dirt as well as drying through high air pressure.