| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain a comfortable residence space by keeping the temperature in a discharging room by driving air in a closed warm room outdoor by utilizing the effect of a Venturi tube. <P>SOLUTION: A ventilation air passage is formed of a cylindrical hood-reduced portion, a cylindrical small diameter portion, and a cylindrical large Venturi tube as each joint. Ingress of bugs and rain of small drops is prevented by fitting a mosquito net 20 to a tip of the air passage. Splash of rain is prevented by fitting a sheet mat 17 which is formed of coconut fiber or not absorbing. <P>COPYRIGHT: (C)2004,JPO |
