Daylighting film, die for forming daylighting film, and manufacturing method for daylighting film

Patent metadata

Field	Value
Publication number	US-2018231202-A1
Application number	US-201615748153-A
Country	US
Kind code	A1
Filing date	Jul 27, 2016
Priority date	Jul 28, 2015
Publication date	Aug 16, 2018
Grant date	—

Abstract

Provided is a daylighting film ( 10 ) including: a base ( 11 ) having light-transmissive performance; a plurality of first protrusion portions ( 12 ) that have light-transmissive performance and are provided to be adjacent to each other on one surface ( 11 a ) of the base ( 11 ); a gap portion ( 13 ) provided between the first protrusion portions ( 12 ); and at least one second protrusion portion ( 14 ) that is provided in at least one gap portion ( 13 ) to be adjacent to the first protrusion portions ( 12 ) on the one surface ( 11 a ) of the base ( 11 ) and that is formed of the same material as that of the first protrusion portions ( 12 ), in which a height of the second protrusion portion ( 14 ) from the one surface ( 11 a ) of the base ( 11 ) is smaller than a height of each of the first protrusion portions ( 12 ) from the one surface ( 11 a ) of the base ( 11 ).

First claim

1 . A daylighting film, the daylighting film comprising:
a base having light-transmissive performance; a plurality of first protrusion portions that have light-transmissive performance and are provided to be adjacent to each other on one surface of the base; a gap portion provided between the first protrusion portions; and at least one second protrusion portion that is provided in at least one gap portion to be adjacent to the first protrusion portions on the one surface of the base and that is formed of the same material as that of the first protrusion portions, wherein a height of the second protrusion portion from the one surface of the base is smaller than a height of each of the first protrusion portions from the one surface of the base.

2 . The daylighting film according to claim 1 , wherein
each of the first protrusion portion and the second protrusion portion has at least a pair of inclined surfaces that are inclined in mutually different directions with respect to the one surface of the base and face each other, and one of the pair of inclined surfaces of the first protrusion portion and one of the pair of inclined surfaces of the second protrusion portion are equal in inclination with respect to the one surface of the base, or the other of the pair of inclined surfaces of the first protrusion portion and the other of the pair of inclined surfaces of the second protrusion portion are equal in inclination with respect to the one surface of the base.

3 . The daylighting film according to claim 2 , wherein
the first protrusion portion and the second protrusion portion are similar in a shape of at least a part corresponding to the pair of inclined surfaces.

4 . A die for forming a daylighting film, the die comprising:
a main body portion made of metal; a plurality of first concave portions provided to be adjacent to each other on a side of one surface of the main body portion; and at least one second concave portion provided in at least a part between the first concave portions to be adjacent to the first concave portions, wherein a depth of the second concave portion from the one surface of the main body portion is smaller than a depth of each of the first concave portions from the one surface of the main body portion.

5 . The die for forming a daylighting film according to claim 4 , wherein
each of the first concave portion and the second concave portion has at least a pair of inner side surfaces that are inclined in mutually different directions with respect to the one surface of the main body portion and face each other, and one of the pair of inner side surfaces of the first concave portion and one of the pair of inner side surfaces of the second concave portion are equal in inclination with respect to the one surface of the main body portion, or the other of the pair of inner side surfaces of the first concave portion and the other of the pair of inner side surfaces of the second concave portion are equal in inclination with respect to the one surface of the main body portion.

6 . The die for forming a daylighting film according to claim 5 , wherein
the first concave portion and the second concave portion are similar in a shape of at least a part corresponding to the pair of inner side surfaces.

7 . A manufacturing method for a daylighting film using the die for forming a daylighting film according to claim 4 , the method comprising the steps of:
applying resin having light-transmissive performance onto the one surface of the main body portion and filling the resin in the first concave portion and the second concave portion; curing the resin and forming a daylighting film that is formed of the resin and has a first protrusion portion and a second protrusion portion; and
separating the daylighting film from the die for forming a daylighting film.

Assignees

• Sharp Kk

Inventors

• UEKI Tomoko
• Kamada Tsuyoshi
• Ueki Shun
• Yui Hideomi

Classifications

• E06B5/00

  Doors, windows, or like closures for special purposes {(insulated compound frames specially adapted for sliding doors or windows E06B3/26347)}; Border constructions therefor · CPC title

• B29K2995/0031

  Refractive · CPC title

• B29K2101/10

  Thermosetting resins · CPC title

• F21S11/007 Primary

  characterised by the means for transmitting light into the interior of a building · CPC title

• B29C41/38

  Moulds, cores or other substrates · CPC title