| 摘要 |
<p>A base panel member 22 is provided with openings 24 that are arranged in a scattered pattern. A back panel member 26 that is arranged on a back surface side of the base panel member 22 has projections 28 that can be inserted into the openings 24 so as to be in close contact therewith. Springs 38 that bias the projections 28 against the openings 24 are disposed in the vicinity of the openings 24 and the projections 28. Shape-memory members 40 are disposed in the vicinity of the springs 38. The projections 28 are inserted into the openings 24 by a biasing force of the springs 38, so that airflow through the openings 24 is prohibited. The shape-memory members 40 change its shape according to temperature changes, and produce a force against the biasing force of the springs 38. This allows the projections 28 to be separated from the openings 24, creating an airflow state in which the air can pass through the openings 24. A design is formed by combining the base panel member 22 and the projections 28, while the projections 28 are inserted into the openings 24.</p> |
