PROBLEM TO BE SOLVED: To provide a running water sterilization device capable of surely fluid-tight dividing an outer cylinder and an inner cylinder and easy to be manufactured.;SOLUTION: In a running water sterilization device 100, an outer cylinder 10 is made from a vinyl chloride resin, has an inside space formed by a cylindrical body 11, a seal part 14 arranged in an upper end part of the cylindrical body 11 and a bottom member 15 arranged in a lower end part of the cylindrical body 11, and an inflow port 16b and an outflow port 16a, an inner cylinder 20 is made from a transparent quartz glass, is insertion-freely arranged in the inside space of the outer cylinder 10 and has a bottom part in a lower edge and an opening and a flange 20F in an upper edge, and has a sterilization lamp V inside, and a seal part 14 has a supporting member 14A which is seal fixed to the outer cylinder 10, inserts and supports the inner cylinder 20, a fastening member 14B which is detachable to the support member 14A, a first gasket 14C arranged between the flange 20F and the support member 14A and a second gasket 14D arranged between the fastening member 14B and the flange 20F.;SELECTED DRAWING: Figure 2a;COPYRIGHT: (C)2018,JPO&INPIT
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