| 摘要 |
PROBLEM TO BE SOLVED: To provide a fireproof double-glazing unit capable of suppressing temperature rising of a primary seal material in the case of a fire lower than the prior arts while maintaining conventional design.SOLUTION: Fireproof double-glazing 12 of a fireproof double-glazing unit 10 is a general structure including primary seal materials 30, 32 and a secondary seal material 36, and conventional design is maintained since an inner surface seal material layer and a moisture-proof seal material are not included. A vertical member 16A of a frame body 14 of the fireproof double-glazing unit 10 includes a heat dissipation member 42A which is provided protrusively in an outdoor space B of the fireproof double-glazing unit 10. When heat of a fire which occurs in an indoor space A reaches the frame body 14 at a side of the indoor space A, the heat is partially dissipated to a side of the outdoor space B via the heat dissipation member 42A. Thus, temperature rising of the frame body 14 and the primary seal materials 30, 32 can be suppressed. |
