| 摘要 |
PROBLEM TO BE SOLVED: To improve heat insulation performance by preventing heat from transferring from a frame body and an inner peripheral surface of a stile to an inner periphery (aspect) direction.SOLUTION: A heat insulation sash comprises a window frame which is installed in a building opening, and a sash which is made by installing a resin stile with a hollow part on an indoor side of a metal stile. The resin stile comprises an indoor side hollow part which is disposed on the indoor side of the metal stile, and a lateral hollow part which is consecutively installed on an outer peripheral side or an inner peripheral side of the indoor side hollow part. The lateral hollow part is partitioned into multiple sections in an aspect direction.SELECTED DRAWING: Figure 3 |
