Title:
DAYLIGHTING SHEET, DAYLIGHTING DEVICE AND BUILDING
Document Type and Number:
Japanese Patent JP2016136265
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a daylighting sheet capable of suppressing direct projection of sunlight (direct incident light), allowing efficient lighting, and making an outdoor side visible from an indoor side.SOLUTION: A daylighting sheet includes: a base material layer; and a light deflection layer formed on one side of the base material layer and configured to deflect light. The light deflection layer includes: a plurality of light transmission parts aligned along the one side of the base material layer and configured to transmit light; and light deflection parts arranged between the plurality of light transmission parts and filled with an ultra-violet ray curable resin composition having a refractive index lower than the light transmission part. At a portion with the light transmission part arranged, the front and back sides of the light deflection layer are formed in parallel. Under a state where the daylighting sheet is arranged at an opening of a building, in a vertical section in a thickness direction of the daylighting sheet, the upper side of the light deflection part is formed at an angle of 0-23.1°, inclusive, relative to the normal line of the sheet surface. The lower side opposite to the upper side is a straight line, and tilted by 0-30°, inclusive, relative to the normal line of the sheet surface.SELECTED DRAWING: Figure 3
Inventors:
KASHIWAGI TAKESHI
INOUE TATSUAKI
INOUE TATSUAKI
Application Number:
JP2016029315A
Publication Date:
July 28, 2016
Filing Date:
February 18, 2016
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
G02B5/00; E06B3/70; E06B5/00; F21S11/00
Domestic Patent References:
JP2010259406A | 2010-11-18 | |||
JP2009058658A | 2009-03-19 |
Foreign References:
WO2011129069A1 | 2011-10-20 |
Attorney, Agent or Firm:
Noriyuki Yamamoto
Koji Yamamoto
Koji Yamamoto
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