PURPOSE: A portable toothbrush sterilizer is provided to enhance dry efficiency and sanitation and prevent wasting of electricity.CONSTITUTION: A portable toothbrush sterilizer comprises: a lower case which includes a toothbrush holder, ultra-violet ray lamp for sterilization, and a ultraviolet radiation tool an upper case(70) which includes upper air passages(75) for drying and an anti-slipping stone band which is formed around the upper air passages to prevent entering of foreign materials. The upper air passages include a first upper air passage which is formed to face with brush of toothbrush, formed at a border between the toothbrush enclosing jaw and a toothbrush receiving hole, a second upper air passage which is bigger than the first upper passageway, a third upper air passage which is bigger than the second upper air passage and is formed to face with the toothbrush enclosing jaw and perform drying function by circulating air.COPYRIGHT KIPO 2012본 발명은 칫솔수용공과 살균용 자외선램프 및 자외선 방사수단을 설치한 하부케이스와, 하부케이스를 여닫으며 건조용 상부공기통로를 가지는 상부케이스로 이루어진 휴대용 칫솔살균기에서,상부케이스(70) 외면의 상부공기통로(75) 테두리에는 미끄럼 방지용 이물질 투입방지턱 기능의 미끄럼 방지돌띠(76)를 형성한 것을 특징으로 하는 휴대용 칫솔살균기이다.
