Duplex window body (複 層 體) structure for

摘要

A multilayered unit for windows comprises at least two, spaced, sealed, planar members, and at least one flexible film disposed between and spaced from two of the plane members, the film extending at least over that region of the planar members which forms a window. A resilient stretching member stretches the flexible film taut by imparting a force to the film at right angles to the plane of the film, so as to tend to push the film away from the stretching member. Each of the spacers opposing each other on each side of the film, each have an internal space which faces the film. The stretching member is located in at least one of the spaces shielded from sunlight.