To provide a technology of ensuring the visibility through a glass-paned window without heating it, the glass-paned window being in a situation where it is frequently brought to a warm environment from a cold environment.

In the technology of ensuring the visibility through a glass-paned window, the glass-paned window has a multiple-glazing structure including two or more glass plates facing each other and a coating film formed on the surface of the glass plates exposed to a cold environment when the glass-paned window is in a closed state. The coating film is made of a urethane resin prepared by polymerizing at least a polyoxyalkylene polyol having an average molecular weight of 400-5,000 and a hydrophobic polyol, the hydrophobic polyol being either an acrylic polyol or a polyester polyol having a hydroxyl value of 10-200 mgKOH/g. When the glass-paned window is open, the coating film absorbs water in contact therewith. After the open glass-paned window is closed, the coating film releases the water which has been absorbed therein, whereby the coating film can come into the state of being capable of absorbing water.