| 摘要 |
PROBLEM TO BE SOLVED: To provide a properly effective double glazing window having excellent heat insulation and high fireproof performance, which sufficiently secures flame shielding performance and heat shielding performance during fire, without spoiling design.SOLUTION: A double glazing window includes two sheets of glass panes 1 and 2 formed of float glass which are arranged in parallel with each other through an air space 3. The surface on the air space 3 side of the outdoor glass pane 1 or the indoor glass pane 2 is provided with a reflective film 4 formed of a transparent metal film. The surface on the indoor side of the indoor glass pane is provided with a transparent fireproof material layer 5 containing sodium silicate as a main constituent. The surface of the fireproof material is provided with a transparent protective film layer 6 formed of polyester or polyolefin as a main component. The reflective film 4 is arranged on the surface on the air space 3 side of the indoor glass pane 2, but not of the outdoor glass pane 1. |
