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US 9,803,818 B2Granted
Lighting film, window glass, roll screen, and lighting louver
AssigneeSharp Kabushiki Kaisha
InventorsTomoko Nango, Shun Ueki, Tsuyoshi Kamada, Kazuyoshi Sakuragi, Masahiro Tsujimoto
Life of this patent
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Abstract
A lighting film which includes a base member having optical transparency, a plurality of protrusions having optical transparency, which are formed to be adjacent to each other on one surface of the base member, and a gap portion formed between the protrusions, in which an area of an end surface of the protrusion on a base member side is greater than an area of an end surface of the protrusion on a side opposite to the base member, and a ratio s/w of an interval s of two adjacent protrusions among the plurality of protrusions to a width w of the protrusion is equal to or less than 0.1.
Claims20
A lighting film comprising:
- a base member having optical transparency;
- a plurality of first protrusions having optical transparency, that are defined to be adjacent to each other on one surface of the base member;
- a gap portion between the plurality of first protrusions;
- and
- a second protrusion provided in a region between the plurality of first protrusions on the one surface of the base member, wherein
- the second protrusion includes an inclined surface inclined with respect to the one surface of the base member and a height of the second protrusion is smaller than a height of each of the plurality of first protrusions,
- an area of an end surface of the each of the plurality of first protrusions on a base member side is greater than an area of an end surface of the each of the plurality of first protrusions on a side opposite to the base member, and
- a ratio s/w of an interval s of two adjacent first protrusions among the plurality of first protrusions to a width w of the each of the plurality of first protrusions is less than 0.225.
5 more elements
A roll screen comprising:
- a lighting film;
- a winding mechanism that winds the lighting film around a shaft center;
- and
- an accommodation section that accommodates the shaft center and the winding mechanism,
- wherein the lighting film includes:
- a base member having optical transparency,
- a plurality of first protrusions having optical transparency, that are defined to be adjacent to each other on one surface of the base member,
- a gap portion between the plurality of first protrusions, and
- a second protrusion provided in a region between the plurality of first protrusions on the one surface of the base member, wherein
- the second protrusion includes an inclined surface inclined with respect to the one surface of the base member and a height of the second protrusion is smaller than a height of the protrusion,
- an area of an end surface of each of the plurality of first protrusions on a base member side is greater than an area of an end surface of the each of the plurality of first protrusions on a side opposite to the base member, and
- a ratio s/w of an interval s of two adjacent first protrusions among the plurality of first protrusions to a width w of the each of the plurality of first protrusions is less than 0.225.
9 more elements
A lighting louver comprising:
- a plurality of lighting films which are tiltably supported with a predetermined interval therebetween,
- wherein the lighting film includes:
- a base member having optical transparency,
- a plurality of first protrusions having optical transparency, that are defined to be adjacent to each other on one surface of the base member,
- a gap portion between the plurality of first protrusions, and
- a second protrusion provided in a region between the plurality of first protrusions on the one surface of the base member, wherein
- the second protrusion includes an inclined surface inclined with respect to the one surface of the base member and a height of the second protrusion is smaller than a height of each of the plurality of first protrusions,
- an area of an end surface of the each of the plurality of first protrusions on a base member side is greater than an area of an end surface of the each of the plurality of first protrusions on a side opposite to the base member, and
- a ratio s/w of an interval s of two adjacent first protrusions among the plurality of first protrusions to a width w of the each of the first protrusions is less than 0.225.
6 more elements
Dependencies are inferred from the claim text.