Air shower apparatus

An air shower apparatus for blowing an air, comprising,

• an inlet duct for guiding the air so that the air flowing out from the inlet duct is directed along a first flow axis of the air, and
• a variable condition area adapted to communicate fluidly with the air flowing out from the inlet duct at at least one side in a direction perpendicular to the first flow axis, to generate a fluctuation at the variable condition area in at least one of a pressure to be applied to the air flowing out from the inlet duct at the variable condition area and a mass flow rate of a supplemental air to be applied from the variable condition area onto the air flowing out of the inlet duct in a fluctuating direction oblique to the first flow axis so that a second flow axis of the air passing the variable condition area is frequently deflected from the first flow axis by the fluctuation in at least one of the pressure and the mass flow rate in the fluctuating direction.