As the social interests and concerns on infections caused by bacterium are increasing, the needs and demands of consumers to Sterilizers are sharply growing.In case of already existing Closed Type Sterilizer, it is possible to sanitize in a short time of period because it uses strong UV rays. It can only be used in enclosed areas because it releases wavelengths that harmfully impact the human body. Also, the existing UV sterilizers have problems such as uncomfortable big sizes, high costs and difficulties in the use.Our product uses UV rays of wavelengths(over 400nm) that are harmless to humans; therefore it?s an advanced new concept of sterilizing device that is more practical and it can be openly used in exposed areas.