PROBLEM TO BE SOLVED: To provide an X-ray tube container which is opened and closed very easily without excess time, effort and skill when maintaining an X-ray tube or the like.SOLUTION: The X-ray tube container 1 receives the X-ray tube 10 and encloses insulating oil 11. The X-ray tube container comprises a container body 2 which has an opening 2a and is deformable by expansion and contraction of the insulating oil 11, a lid body 3 which closes the opening 2a and does not deform by expansion and contraction of the insulating oil 11, a flange section 20 extending outward along the circumference of the opening 2a, connecting members 6 connecting the flange section 20 and the lid body 3, and a seal member 4 sealing a joint part 3a of the flange section 20 and the lid body 3.COPYRIGHT: (C)2012,JPO&INPIT【課題】X線管などをメンテナンスする際に、非常に簡単に開閉でき、余分な手間や技能を不要とする。【解決手段】X線管10を収納し、絶縁油11を内包するX線管容器1において、開口部2aを有し、絶縁油11の膨張及び収縮によって変形可能な容器本体2と、開口部2aを閉じ、絶縁油11の膨張及び収縮でも変形しない蓋体3と、開口部2aの周囲に沿って外側に延設されたフランジ部20と、フランジ部20と蓋体3とを連結する連結部材6と、フランジ部20と蓋体3との接合部3aをシールするシール部材4とを備える。【選択図】図3