| 摘要 |
PROBLEM TO BE SOLVED: To make connectable a bath hot water inflow cylinder part and an air inflow cylinder part with a nozzle casing by making the both cylinder parts adjacent to each other by overlapping the center line of the air inflow cylinder part with the bath hot water inflow part, to shorten the length dimension of the nozzle casing, to reduce the projecting amount of the nozzle casing and to improve the degree of freedom in an execution method for an air bubble generating bathtub. SOLUTION: A jet forming channel 30b housed and disposed within a nozzle casing 20 closely to a jet nozzle 2 is arranged so as to overlap with a bath hot water inflow cylinder part 20f in the center line direction of a jet nozzle 23. At a location deviated from a connection portion of the bath hot water inflow cylinder part 204 to the nozzle casing 20 in the circumferential direction, the nozzle casing 20 is connected with an air inflow cylinder part 20d. And, in a center line direction of the jet nozzle 23, a center line of the air inflow cylinder part 20d is overlapped with the bath hot water inflow cylinder part 20f.
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