As fine dust has emerged as one of the problems of today's society, air purifiers for cars and households have become common, and air purification facilities have been provided in the building itself.
However, outdoor help is not available from these devices or facilities, so disposable masks are being used as a common solution.
In this situation, by installing an air purifier at bus stops where people stay for a long time, it is possible to reduce the concentration of fine dust in the surrounding area by collecting fine dust in the air and soot emitted from cars on the road and exhaling fresh air through the filter.
