This Product is a system that can quickly and continuously purify the air with short wave light UV-C. The purple light is often used in medical institution and other devices to neutralize the microbe on the surface, in the water and in the air of that area. The difference between this product and others is that it can continously sterilize 24 hours everyday with UV-C, if it is installed properly. This device can inhale the air of this space into the UV-C irradiation room which cannot be seen from outside through fan and filter. The UV-C irridiation room is normally installed in arraied 2-4 lamps. After neutralization, the clean air is circulated into the space again. At the present time, this product UV-C is installing in the hospitals, particularly at the operating, ICUs, medicine compounding room and child hospitals. UV-C can be has already proved to neutralize virus of bird influenza, so it is considered that UV-C can be applied to big scaled raising chicken houses or other animals.