| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent vapor condensation on the window surface in winter season. SOLUTION: Means for supplying indoor air to the upper part of a curtain rail 5 or to the floor surface 20 under a curtain 8 is provided in order to circulate indoor air through a space 9 between the curtain 8 and the window surface 3 thus preventing vapor condensation on the window surface.</p> |
