| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-layer window structure using the laminated glass reduced in warpage in a laminated multi-layer window structure for the railway vehicle. SOLUTION: This laminated multi-layer window structure for vehicle is composed of a polycarbonate board, an urethane film, a first inorganic glass plate, an air layer and a second inorganic glass plate from the outside of the vehicle. In this case, the thickness of the polycarbonate board is controlled to <=2.5 mm, and the thickness of the first inorganic glass plate is adjusted to >=3 to <=5 mm. Meanwhile, the second inorganic glass plate is of thermally strengthened glass, and the thickness is controlled to >=4 to <=6 mm.
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