To allow a private parts washing device to wash the human private parts and to have an excellent massaging effect.
A private parts washing device washes the human private parts by ejecting bubbled water from the hip nozzle 49 of a nozzle device 26 or the like toward the human private parts. When a massage setting button is pressed, the bubbled water is ejected while the air entrainment ratio λ defined as the ratio of air flow rate Qa to the flow rate Qw of wash water is around a value of 4. When the air entrainment ratio λ is around 4, the bubbled water takes the form of air-bubble flow and a an atomizing flow alternately. The cycle of the air-bubble flow and the atomizing flow is 10 to 20 Hz. With such a cycle, resonance to the human skin occurs and bubbles are recognized as intermittent stimuli by the human private parts, whereby massaging effects promoting excretion can be enhanced.
KAWAHARA YOSHIYUKI
SATO MINORU
OHASHI TAKAHIRO
NIIHARA NOBORU
MATSUO SHINSUKE
