The present invention relates to providing an ultraviolet ray sterilizing device, which effectively sterilizing abundant of gas or pressurized fluid in a short period and the device is minimized in size, stable over a long period of time and safe to use.The present invention relates to an ultraviolet ray sterilizing device, having a container or pipe for restricting a pressure resistance of a pressurization space and irradiating ultraviolet ray for sterilizing a fluid in pressurized state such as a pressurized gas, liquid and so on existed in the container or pipe deploying an ultraviolet ray irradiating optical assembly such as a divergent lens or a light guiding panel in the pressurization space utilizing a light transmission path such as an optical fiber for transmitting the ultraviolet ray emitted by an ultraviolet ray source such as an ultraviolet ray LED and emitting to an ultraviolet ray irradiating optical assembly and irradiating the ultraviolet ray to the pressurized gas or liquid existed in the pressurized space.本發明的課題為提供一種能在短時間內效率佳地將大量的氣體或加壓狀態的液體予以紫外線殺菌、可小型化、能長期間穩定且安全地使用裝置之紫外線殺菌裝置。本發明為一種紫外線殺菌裝置,係具備有用以規定加壓空間之耐壓性的容器或配管,且用以對存在於該容器或配管內的加壓氣體或加壓液體等加壓狀態的流體照射紫外線以進行殺菌;於前述加壓空間內配置擴散透鏡或導光板等紫外線射出用光學構件,並使用光纖等光傳送路徑將紫外線發光二極體等紫外線光源所射出的紫外線傳送並射出至該紫外線射出用光學構件,並對存在於前述加壓空間內的加壓氣體或加壓液體照射紫外線。1b‧‧‧紫外線殺菌裝置2b‧‧‧加壓空間3b‧‧‧配管4b‧‧‧加壓氣體5b‧‧‧光纖6b‧‧‧耦合器7b‧‧‧耐壓連接器8b‧‧‧紫外線照射空間10‧‧‧擴散透鏡LS‧‧‧紫外線光源
