| 摘要 |
PROBLEM TO BE SOLVED: To ensure a proper function inherent to a building panel under the restraint of a cost increase. SOLUTION: A building panel 6 has many divisional housing parts 8A filled with activated carbon or charcoal. In this case, the the specific housing parts 8A of the building panel 6 are filled with activated carbon or charcoal, and fitted with a gas permeable sheet member 11 for preventing the charged activated carbon or charcoal from leaking outside the housing parts 8A. At the same time, the housing parts 8A with and without the activated carbon or charcoal are formed so as to be capable of being discriminated from each other. In addition, the building panel 6 is formed to have a part or the whole of the housing parts 8A at least at the peripheral part deformable under exposure to an external force, and a part or the whole of the housing parts 8A at such a position is formed to be empty without any activated carbon or charcoal. At the same time, a part or the whole of the remaining housing parts 8A except for the empty housing parts 8A are filled with activated carbon or charcoal, and formed to have a gas permeable sheet member 11 for preventing the charged activated carbon or charcoal from leaking outside. |
