STERILIZER FOR BEVERAGE CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide a sterilizer for a container, capable of evenly irradiating ultraviolet rays to a lateral face in addition to a bottom of the container in a state of being inserted into the inside of the container.SOLUTION: There are included: a light source 4 light emitting ultraviolet rays UV; a light guide body 6 guiding ultraviolet rays UV light emitted by the light source 4; a reflection board 8 provided on the light guide body 6; and a prism 10 provided on the tip of the light guide body 6. The prism 10 passes an opening 41 of a preform 40 supported by a holding device 3 by operating the light guide body 6 at the time of sterilization treatment, and is inserted into the inside of the preform 40 so as to move back and forth. The prism 10 irradiates ultraviolet rays UV guided by the light guide body 6 to a bottom surface 43 and a lateral face 45 of the preform 40 while moving back and forth inside the preform 40. The prism 10 irradiates ultraviolet rays UV to two orthogonal surfaces of the bottom surface 43 and the lateral face 45.SELECTED DRAWING: Figure 1