Lighting film, window glass, roll screen, and lighting louver

Patent metadata

Field	Value
Publication number	US-2016223154-A1
Application number	US-201414896071-A
Country	US
Kind code	A1
Filing date	Jun 5, 2014
Priority date	Jun 7, 2013
Publication date	Aug 4, 2016
Grant date	—

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.

First claim

1 - 2 . (canceled)

3 . A lighting film comprising:
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; a gap portion formed between the protrusions; and a second protrusion provided in a region between the protrusions on the one surface of the base member, wherein the second protrusion has 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.

4 . The lighting film according to claim 3 ,
wherein an area of an end surface of the protrusion on the base member side is greater than an area of an end surface of the protrusion on the side opposite to the base member.

5 . The lighting film according to claim 4 ,
wherein the plurality of protrusions include a plurality of protrusions having a side surface with an inclination angle that is changed in a continuous or stepwise manner from the base member side to the side opposite to the base member.

6 . The lighting film according to claim 3 ,
wherein the plurality of protrusions include a plurality of protrusions having side surfaces with inclination angles different from each other.

7 . The lighting film according to claim 3 ,
wherein the protrusion extends in a straight line shape or in a curved line shape and two side surfaces of the protrusion in a cross section orthogonal to an extending direction of the protrusion have an inclination angle that is changed in a continuous or stepwise manner from the base member side to the side opposite to the base member.

8 - 22 . (canceled)

23 . 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 protrusions having optical transparency, which are formed to be adjacent to each other on one surface of the base member,
a gap portion formed between the protrusions, and
a second protrusion provided in a region between the protrusions on the one surface of the base member, and
wherein the second protrusion has 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.

24 . The roll screen according to claim 23 ,
wherein an area of an end surface of the protrusion on the base member side is greater than an area of an end surface of the protrusion on the side opposite to the base member.

25 . The roll screen according to claim 23 ,
wherein the plurality of protrusions include a plurality of protrusions having a side surface with an inclination angle that is changed in a continuous or stepwise manner from the base member side to the side opposite to the base member.

26 . The roll screen according to claim 23 ,
wherein the plurality of protrusions include a plurality of protrusions having side surfaces with inclination angles different from each other.

27 . The roll screen according to claim 23 ,
wherein the protrusion extends in a straight line shape or in a curved line shape and two side surfaces of the protrusion in a cross section orthogonal to an extending direction of the protrusion have an inclination angle that is changed in a continuous or stepwise manner from the base member side to the side opposite to the base member.

28 - 32 . (canceled)

33 . 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 protrusions having optical transparency, which are formed to be adjacent to each other on one surface of the base member,
a gap portion formed between the protrusions, and
a second protrusion provided in a region between the protrusions on the one surface of the base member, and
wherein the second protrusion has 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.

34 . The lighting louver according to claim 33 ,
wherein an area of an end surface of the protrusion on the base member side is greater than an area of an end surface of the protrusion on the side opposite to the base member.

35 . The lighting louver according to claim 33 ,
wherein the plurality of protrusions include a plurality of protrusions having a side surface with an inclination angle that is changed in a continuous or stepwise manner from the base member side to the side opposite to the base member.

36 . The lighting louver according to claim 33 ,
wherein the plurality of protrusions include a plurality of protrusions having side surfaces with inclination angles different from each other.

37 . The lighting louver according to claim 33 ,
wherein the protrusion extends in a straight line shape or in a curved line shape and two side surfaces of the protrusion in a cross section orthogonal to an extending direction of the protrusion have an inclination angle that is changed in a continuous or stepwise manner from the base member side to the side opposite to the base member.

38 - 40 . (canceled)

Assignees

• Sharp Kk

Inventors

• Nango Tomoko
• Ueki Shun
• Kamada Tsuyoshi
• Sakuragi Kazuyoshi
• Tsujimoto Masahiro

Classifications

• E06B2009/2417

  Light path control; means to control reflection · CPC title

• F21S11/007 Primary

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

• G02B17/006

  Systems in which light light is reflected on a plurality of parallel surfaces, e.g. louvre mirrors, total internal reflection [TIR] lenses (Fresnel mirrors G02B5/09, Fresnel lenses G02B3/08) · CPC title

• G02B2207/123

  Optical louvre elements, e.g. for directional light blocking · CPC title

• E06B9/24 Primary

  Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00) · CPC title