| 摘要 |
<p>PURPOSE:To suppress the generation of a wind breaking sound by forming the top end of a screen material to be mounted with a space into a circular cross section, applying a seal member thereto, and providing a roundness by covering the top end edge with a long cap or the like. CONSTITUTION:Screen members 4 are mounted on a base frame 3, and on the screen surfaces formed on the respective surfaces, the air flow passing to the inside of a screen body 2 is guided to round top end surfaces 9 on the screen body 4 top ends. The air flow is smoothly passed through the space between the screen members 4, and the swirling is minimized to prevent the vibration of the air between the members 4, or the air flow is weakened to suppress the generation of a wind breaking sound. At that time, the upper surface 7 and lower surface 8 on the top end part of each screen member 4 are formed in parallel to each other, the flow of the air is more smoothed to further suppress the wind breaking sound. A damping member 11 is stuck to the screen member 4, whereby the member 4 is resonated with the vibration of the air between the members 4 so that the enlargement of the sound can be prevented. The top end edge of the screen member 4 is formed round by depositing the seal member or applying a resin cap thereto.</p> |
