| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent dew condensation in a metal frame part of a sash for forming a glass pane as double glazing.SOLUTION: A dew condensation prevention structure comprises a base frame 1 for forming an opening on the inside for communicating an indoor side I of a building and an outdoor side O of the building, and the base frame 1 comprises a sash 2 provided in an outdoor side part and closing the opening and a frame part provided in an indoor side part and opposed to the sash 2. The sash 2 comprises a metal frame 21 held by the base frame 1 and double glazing 22 held by the metal frame 21, and the frame part is opposed by providing a clearance S on a depth surface 21a of turning the indoor side I in the metal frame 21, and comprises a seal member 4 between the frame part and the sash 2. The seal member 4 prevents communication with the clearance S on the indoor side I partitioned by the double glazing 22. |
