| 摘要 |
PURPOSE:To easily construct a sound absorbing body of a ceiling which has great sound absorbability in the wide range from a high-pitched tone range to a low-pitched tone range, and also to make dismounting of a ceiling board for inspection of electric and air conditioning lines unnecessary. CONSTITUTION:Inverted U-letter section elastic fittings 3 are arranged around the outer periphery of a ceiling sound absorbing board A, in which perforated boards 2 are bonded laminatedly on the surface of a sound absorbing porous material 1. Then, the ceiling sound absorbing board A is inserted between channel shaped mounting members B, which are suspended from a ceiling slab C, from the lower side. Thus, the fittings 3 are engaged with the outside pieces of the channel shaped mounting members B. |
