DAYLIGHTING SHEET, DAYLIGHTING DEVICE AND BUILDING

Japanese Patent JP2016136266

A

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 configured to deflect light. The light deflection layer includes: a plurality of light transmission parts aligned along 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 as a polygonal line in which a plurality of straight lines continue, or a curved line, and the upper side is formed projecting downward 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.SELECTED DRAWING: Figure 3

KASHIWAGI TAKESHI
INOUE TATSUAKI

JP2016029322A

July 28, 2016

February 18, 2016

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DAINIPPON PRINTING CO LTD

G02B5/00; E06B3/70; E06B5/00; F21S11/00

JP2010259406A	2010-11-18
JP2009058658A	2009-03-19

WO2011129069A1

2011-10-20

Noriyuki Yamamoto
Koji Yamamoto

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