| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultraviolet radiation sterilizer capable of reliable sterilization in a short period of time by ultraviolet radiation by a limited number of ultraviolet radiation sources. SOLUTION: More than one ultraviolet radiation source 16 is arranged at an interval of 3 cm to 5 cm laterally along one side of a liquid bag 11 permeating ultraviolet radiation; ultraviolet radiation sources 17 are arranged in the vicinity of the opening in the longitudinal direction of the liquid bag, at least one of the ultraviolet radiation sources 17 in the vicinity of the opening in the longitudinal direction of the liquid bag is arranged correspondingly to the openings in the longitudinal direction of the liquid bag. In addition, reflecting plates 18 are arranged at the cylinder portions in the longitudinal direction of the liquid bag and opposite the ultraviolet radiation sources 16.
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