The present invention is provided to effectively disinfect germs transferred from hand to hand in public facilities. An internal iron piece is installed near the middle of a door. An ultraviolet lamp is installed on the internal iron piece. A piezoelectric element is installed in a joint between the internal iron piece and the door. A protective cover enables cleaning without touching the ultraviolet lamp directly.COPYRIGHT KIPO 2020본 발명은 공공시설에서 손에서 손으로 옮겨지는 병균을 효과적으로 소독할 수 있도록하는 효과를 제공하기 위함이다.