| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound insulting veranda structure lightweight and excelling in workability and weatherability. SOLUTION: The veranda structure provided on the outside of a building includes a first reflecting surface 10 reflecting the noise of the building outside 22, at a veranda roof surface 12. The inclination angle θ of the first reflecting surface 10 with respect to the propagating direction of the direct wave W of noise is set to 90° or more, and the first reflecting surface 10 is formed of a lightweight face material with weatherability. The veranda roof surface 12 is further provided with a second reflecting surface 20 reflecting the diffracted wave D of noise due to a veranda handrail 24. The second reflecting surface 20 is set into recessed arcuate shape from the side view and may be formed of a lightweight face material with weatherability. COPYRIGHT: (C)2011,JPO&INPIT
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