Window / air cleaner

is an air purifier that has interfaces like
actual windows.

Usually, we can get some information from windows
and we can control wind by moving windows.
I applied these two main interfaces of the window
to the air purifier.

If the air in your room is dirty, a transparent LCD
becomes darker. And then, you only have to slide
this 'new window' to clean the air instead of press
some buttons.