PROBLEM TO BE SOLVED: To miniaturize a fluid sterilizer while ensuring sterilization performance.SOLUTION: A fluid sterilizer according to the embodiment includes a tubular member, a base, and a light source. The tubular member is open at both ends thereof and allows fluid to flow through the inside thereof. The base has a housing part that houses the tubular member, and a first through-hole that communicates with one end of the housing part. The light source is disposed so as to face the other end of the housing part and irradiates the housing part with ultraviolet light. In the fluid sterilizer, the fluid flows in the opposite direction across the tubular member in the length direction of the tubular member.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2019,JPO&INPIT【課題】殺菌性能を確保しつつ小型化する。【解決手段】実施形態の流体殺菌装置は、管状部材と、基体と、光源とを具備する。管状部材は、両端が開口し、内部に流体を流す。基体は、管状部材を収容する収容部と、収容部の一端と連通する第１貫通口とを有する。光源は、収容部の他端に対向して配置され、収容部に紫外線を照射する。流体殺菌装置は、管状部材の長さ方向に、管状部材を挟んで反対の方向に流体が流動する。【選択図】図２
