PROBLEM TO BE SOLVED: To provide an electron beam sterilization device which securely shields a radiation ray occurring in a sterilization chamber.SOLUTION: An electron beam sterilization device includes: a sterilization chamber 6 which emits an electron beam toward a container to sterilize the container a shield cover body which covers the sterilization chamber 6 to shield a radiation ray and a rotary body in which an upper part is exposed from an opening part 44 formed in the shield cover body. The shield cover body has a fixed shield cover 41 covering the upper part of the rotary body. A rotary annular shield plate 64, which protrudes from the rotary body to the fixed shield cover 41 side, and a fixed annular shield plate 65, which protrudes from the shield cover body to the rotary body side, are provided between the rotary body and the fixed shield cover 41. The rotary annular shield plate 64 and the fixed annular shield plate 65 face each other while forming a shield gap 66 therebetween. A shield lap part 67 which shields the radiation ray is formed by the rotary annular shield plate 64 and the fixed annular shield plate 65.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2016,JPO&INPIT【課題】滅菌室内で発生した放射線を確実に遮蔽することができる電子線滅菌装置を提供する。【解決手段】電子線を容器に照射して滅菌する滅菌室6と、滅菌室6を覆って放射線を遮蔽する遮蔽カバー体と、遮蔽カバー体に形成された開口部44から上部が露出した回転体とが備えられ、遮蔽カバー体は回転体の上部を覆う固定遮蔽カバー41を有し、回転体と固定遮蔽カバー41との間に、回転体から固定遮蔽カバー41側に突出する回転環状遮蔽板64と、遮蔽カバー体から回転体側に突出する固定環状遮蔽板65とが設けられ、回転環状遮蔽板64と固定環状遮蔽板65とは遮蔽隙間66をあけて互いに対向し、回転環状遮蔽板64と固定環状遮蔽板65とによって放射線を遮蔽する遮蔽ラップ部67が形成されている。【選択図】図8
