| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of condensation on the internal surface of an indoor-side frame by ensuring heat insulation between the outdoor side and the indoor side. SOLUTION: In a window frame and a movable fitting section installed at the opening end of the window frame in a freely openable and closeable manner, the skylight window structure is constituted in such a manner that the peripheral wall of the movable fitting section is formed of an outdoor-side frame and the indoor-side frame while these frames are partitioned into an outdoor-side space section and an indoor-side space section, in which a heat- insulating material is not installed, through a partition plate and heat insulation from the outdoor side to the indoor side is interrupted.
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