| 摘要 |
PROBLEM TO BE SOLVED: To improve a filling rate of a heat storage building material and to secure strength of a building material body by improving a storage structure of a heat storage material container for the building material body.SOLUTION: Each pair of fitting-in recessed parts 4 and 4 are formed to a depth "b" less than a depth "a" of a recessed part 3, and also recessed in a rectangular shape from both width-directional side faces 3a and 3a of the recessed part 3 in plan view. Both ends of a partition member 12 are fitted in the pair of fitting-in recessed parts 4 and 4. The partition member 12 is in level with a reverse surface 1a of a building material body 1 while fitted in the pair of fitting-in recessed parts 4 and 4. Each heat storage material container is stored in each container storage space so that a lug part of a peripheral edge is arranged in a gap between the partition member 12 and a bottom surface 3a of the recessed part 3 while the partition member 12 is fitted in the pair of fitting-in recessed parts 4 and 4. |
