| 摘要 |
PURPOSE: A window frame for a balcony is provided to prevent the counterflow of rainwater to the inside of a building and to improve adiabatic effect, airtightness and watertightness of the indoor. CONSTITUTION: The window frame(50) for a balcony contains: many rails(51¯55) and a water-stopping projection(56) fixed with a protection window(8) and inner and outer windows(9',9), and formed on the upper side of a main body(50a); and a drainage hole(57) and a hollow formed on the lateral and inner sides of rails(51¯55) to drain off rainwater. The heights(H4,H3,H2,H1) of water-stopping projection(56) and the rails(51¯55) become lower toward the outside of a building, and the water-stopping projection(56), rails(54,55) fixed with the inner window(9'), rails(52,53) fixed with the outer window(9) and a rail(51) fixed with the protection window(8) are formed to have the heights(H4,H3,H2,H1) lowered in order, so that the rainwater gathered on the upper side of the main body(50a) doesn't flow backward in the internal direction of a building and drains off to the outside of a building.
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