Daylighting device

  • US 10,513,091 B2
  • Filed: 06/22/2016
  • Issued: 12/24/2019
  • Est. Priority Date: 06/24/2015
  • Status: Active Grant
First Claim
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1. A daylighting device that is used by being attached to at least any one of an existing window glass and an existing window frame supporting the existing window glass, the daylighting device comprising:

  • a first base that is light-transmissive;

    a first spacer that is provided at an outer edge of a surface of the first base, the surface of the first base facing the existing window glass, and that is attached to at least any one of the existing window glass and the existing window frame; and

    a daylighting member that is provided on a side of the surface of the first base, the surface of the first base facing the existing window glass, whereinthe daylighting member includes a second base that is light-transmissive, and a plurality of protrusion daylighting portions that is light-transmissive and provided to be adjacent to each other on a side of a surface of the second base, the surface of the second base facing at least the existing window glass;

    wherein a Low-E film is formed between the first base and the daylighting member; and

    wherein the Low-E film is covered with the daylighting member on the surface of the first base, the surface of the first base facing the existing window glass;

    wherein when the Low-E film is viewed from the surface of the first base facing the existing window glass, the daylighting member is larger in area than the Low-E film, and the daylighting member is provided on the Low-E film so that the Low-E film does not protrude from an outer edge of the daylighting member.

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