PROBLEM TO BE SOLVED: To provide a jet nozzle and a jet bathing device capable of jetting while changing a jetting direction without providing a rotary slide part.SOLUTION: The jet bathing device is provided with a jet nozzle for jetting pressurized bathtub water to the inside of a bathtub while changing the jetting direction. The jet nozzle comprises: a nozzle main body provided in the inside with a flowing water introduction part where the pressurized bathtub water is introduced, a flow path cross section contraction part communicated with the flowing water introduction part more on the downstream side than the flowing water introduction part, where a flow path cross section is reduced relative to the flowing water introduction part, and a chamber communicated with the flow path cross section contraction part more on the downstream side than the flow path cross section contraction part and provided with a flow path cross section sudden enlargement part where the flow path cross section is suddenly enlarged relative to the flow path cross section contraction part on the end part on the upstream side, and held to a bathtub wall a nozzle cap freely detachably attached to the nozzle main body, communicated with the chamber and provided with a jetting port facing the inside of the bathtub and a shielding body provided facing the chamber near the jetting port for shielding a part of a flow path to the jetting port.COPYRIGHT: (C)2008,JPO&INPIT【課題】回転摺動部分を設けずに、噴出方向を変化させながらの噴流噴出を実現できる噴流浴装置を提供する。【解決手段】加圧浴槽水を噴出方向を変化させながら浴槽の内部に噴出する噴流ノズルを備え、この噴流ノズルは、加圧浴槽水が導入される流水導入部と、流水導入部より下流側で流水導入部に連通し流水導入部に対して流路断面が縮小された流路断面収縮部と、流路断面収縮部より下流側で流路断面収縮部に連通し流路断面収縮部に対して流路断面が急拡大された流路断面急拡大部を上流側の端部に有するチャンバーとが内部に設けられ、浴槽壁に対して保持されるノズル本体と、ノズル本体に対して着脱自在に取り付けられチャンバーと連通すると共に浴槽の内部に臨む噴出口を有するノズルキャップと、噴出口の近傍で前記チャンバーに臨んで設けられ噴出口へと通じる流路の一部を遮る遮蔽体とを有する。【選択図】図1
