Lighting member, lighting device, and method for installing lighting member

Patent metadata

Field	Value
Publication number	US-9970613-B2
Application number	US-201515115998-A
Country	US
Kind code	B2
Filing date	Feb 2, 2015
Priority date	Feb 4, 2014
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

There is provided a lighting film according to one aspect of the invention including: a first substrate having optical transparency; a plurality of lighting units formed of a plurality of polygonal prism-shaped structures having optical transparency provided on a first surface of the first substrate; and gaps provided between the plurality of lighting units, in which the lighting unit is a polygon which has five vertexes in a sectional shape orthogonal to a longitudinal direction and has all of internal angles smaller than 180°, the lighting unit includes a first side which is one side of the polygon corresponding to a surface contacted with the first substrate, and a plurality of vertexes including a first vertex and a second vertex which are vertexes corresponding to both ends of the first side and a third vertex which is not positioned on the first side, a length of a perpendicular line of the first side passing the third vertex is longer than a length of a perpendicular line of the first side passing a vertex other than the third vertex among the plurality of vertexes, and a shape of the lighting unit is asymmetrical with a perpendicular line of the first side passing the third vertex as the center.

First claim

The invention claimed is:

1. A lighting member comprising:
a first substrate having optical transparency;
a plurality of lighting units formed of a plurality of polygonal prism-shaped structures having optical transparency provided on a first surface of the first substrate; and
gaps provided between the plurality of lighting units,
wherein the polygonal prism-shaped structure is a pentagon in a first sectional shape orthogonal to a first longitudinal direction of the polygonal prism-shaped structure, the pentagon having all of internal angles smaller than 180°,
the pentagon includes a first side which is one side of the pentagon corresponding to a second surface contacted with the first substrate, and first to fifth vertexes, the first vertex and the second vertex corresponding to both ends of the first side, the third vertex being not positioned on the first side,
a first length of a first perpendicular line of the first side passing the third vertex is longer than a second length of a second perpendicular line of the first side passing the fourth vertex,
a shape of the pentagon is asymmetrical with the first perpendicular line as a center,
the fourth vertex is positioned on one side of the first perpendicular line,
the fifth vertex is positioned on another side of the first perpendicular line,
the second length is longer than a third length of a third perpendicular line of the first side passing the fifth vertex, and
the first length is longer than a fourth length of the first side.

2. The lighting member according to claim 1 ,
wherein, a second side connects the third vertex and the fourth vertex,
a third side connects the third vertex and the fifth vertex, and
a first angle formed by the first perpendicular line and the second side is greater than a second angle formed by the first perpendicular line and the third side.

3. The lighting member according to claim 1 ,
wherein the third length of the perpendicular line of the first side passing the fifth vertex is longer than ½ of the first length.

4. The lighting member according to claim 1 , the lighting member further comprising:
an auxiliary lighting unit formed of a polygonal prism-shaped structure having optical transparency between two of the plurality of lighting units, the two of the plurality of lighting units being adjacent to one another,
wherein the auxiliary lighting unit has a triangular shape in a second sectional shape orthogonal to a second longitudinal direction of the auxiliary lighting unit,
the pentagon has a first area and a second area, the first area being on one side of the first perpendicular line, the second area being on another side of the first perpendicular line, the first area being larger than the second area,
the triangular shape has a second side having a first tilt toward the first side,
a third side is included in the first area, contacts the fifth vertex, and has a second tilt, and
the first tilt is opposite to the second tilt.

5. A lighting device comprising:
the lighting member according to claim 1 ; and
a support member which supports the lighting member,
wherein the lighting device introduces external light through the lighting member.

6. The lighting device according to claim 5 , the lighting device further comprising:
an accommodation mechanism which folds and accommodates the support member so as to be input and output.

7. The lighting device according to claim 5 , the lighting device further comprising:
a winding mechanism of winding the support member so as to be input and output.

8. A lighting member comprising:
a first substrate having optical transparency;
a plurality of lighting units formed of a plurality of polygonal prism-shaped structures having optical transparency provided on a first surface of the first substrate; and
gaps provided between the plurality of lighting units,
wherein the polygonal prism-shaped structure is a hexagon in a sectional shape orthogonal to a longitudinal direction of the polygonal prism-shaped structure the hexagon having all of internal angles smaller than 180°,
the hexagon includes a first side which is one side of the hexagon corresponding to a second surface contacted with the first substrate, and first to sixth vertexes, the first vertex and the second vertex corresponding to both ends of the first side, the third vertex being not positioned on the first side,
a first length of a first perpendicular line of the first side passing the third vertex is longer than a second length of a second perpendicular line of the first side passing the fourth vertex,
a shape of the hexagon is asymmetrical with the first perpendicular line as a center,
the fourth vertex is positioned on one side of the first perpendicular line,
the fifth vertex is far from the first side among the fourth and fifth vertexes positioned on other side, and
the sixth vertex is close to the first side among the fourth and fifth vertexes,
the second length is longer than a third length of a third perpendicular line of a first side passing the fifth vertex.

9. The lighting member according to claim 8 ,
wherein a second side connects the third vertex and the fourth vertex
a third side connects the third vertex and the fifth vertex, and
a first angle formed by the first perpendicular line and the second side is greater than a second angle formed by the first perpendicular line and the third side.

10. The lighting member according to claim 8 ,
wherein the third length is longer than ½ of the first length.

11. A method for installing a lighting member, the method comprising:
arranging a plurality of lighting units so that a side of a pentagon where a first area with respect to a first perpendicular line of a first side passing a third vertex is large faces a lower side in a vertical direction; and
installing the lighting member in a transparent structure,
wherein the lighting member includes,
a first substrate having optical transparency;
the plurality of lighting units formed of a plurality of polygonal prism-shaped structures having optical transparency provided on a first surface of the first substrate; and
gaps provided between the plurality of lighting units,
in which the polygonal prism-shaped structure is a pentagon in a sectional shape orthogonal to a longitudinal direction of the polygonal prism-shaped structure, the pentagon having all of internal angles smaller than 180°,
the pentagon includes the first side which is one side of the pentagon corresponding to a second surface contacted with the first substrate, and first to fifth vertexes, the first vertex and the second vertex corresponding to both ends of the first side, the third vertex being not positioned on the first side,
a first length of a first perpendicular line of the first side passing the third vertex is longer than a second length of a second perpendicular line of the first side passing the fourth vertex,
a shape of the pentagon is asymmetrical with the first perpendicular line as a center,
the fourth vertex is positioned on one side of the first perpendicular line,
the fifth vertex is positioned on another side of the first perpendicular line,
the second length is longer than a third length of a third perpendicular line of the first side passing the fifth vertex, and
the first length is longer than a fourth length of the first side,
a second side connects the third vertex and the fourth vertex,
a third side connects the third vertex and the fifth vertex, and
a first angle formed by the first perpendicular line and the second side is greater than a second angle formed by the first perpendicular line and the third side.

Assignees

• Sharp Kk

Inventors

• Yui Hideomi
• Kamada Tsuyoshi
• Nango Tomoko

Classifications

• F21S11/007 Primary

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

• E06B9/386

  Details of lamellae · CPC title

• F21V5/02

  of prismatic shape (F21V5/04 takes precedence) · CPC title

• E06B9/24

  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

• G02B5/045

  Prism arrays · CPC title