Light control device

Patent metadata

Field	Value
Publication number	US-10281114-B2
Application number	US-201414891825-A
Country	US
Kind code	B2
Filing date	May 20, 2014
Priority date	May 22, 2013
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A light control device includes: a sheet-like light control member; and a support device supporting the light control member such that an orientation of the light control member is variable. The light control member includes: first portions arranged in a first direction along a sheet plane of the light control member, each first portion extending in a second direction that is in non-parallel with the first direction and along the sheet plane of the light control member; and second portions arranged in the first direction alternately with the first portions, each second portion extending in the second direction.

First claim

The invention claimed is:

1. A light control device comprising:
a plurality of sheet-like light control members; and
a support device supporting the light control members such that an orientation of the light control members is variable,
wherein each light control member includes
first portions arranged in a first direction along a sheet plane of the light control member, each first portion extending in a second direction that is in non-parallel with respect to the first direction and along the sheet plane of the light control member,
second portions arranged in the first direction alternately with respect to the first portions, each second portion extending in the second direction,

wherein each second portion includes a resin material and functional substances dispersed in the resin material, and
a sheet-like base portion supporting the first portions and the second portions, wherein the base portion is integrally formed with the first portions;

wherein each light control member has a curved shape, and the first direction extends along a curved plate surface of the light control member, and
wherein a width along the first direction of the second portions decreases away from a convex surface side of the curved light control member to a concave surface side of the curved light control member.

2. The light control device according to claim 1 , wherein the support device supports the light control members such that the light control members are rotatable about an axis line in parallel with the second direction.

3. The light control device according to claim 1 , wherein the support device supports the light control members such that the light control members are rotatable about an axis line in parallel with the first direction.

4. The light control device according to claim 3 , wherein the support device is configured to support the light control members such that the light control members are rotatable about an axis line in parallel with the second direction.

5. The light control device according to claim 4 , wherein the support device is configured to support the light control members such that the rotating motion of the light control members about the axis line in parallel with the first direction is independent from the rotating motion of the light members about the axis line in parallel with the second direction.

6. The light control device according to claim 1 , wherein the light control members are arranged in one direction and supported by the support device, and each light control member is elongated in a longitudinal direction perpendicular to the one direction.

7. The light control device according to claim 6 , wherein the support device is configured to support the light control members such that each light control member is rotatable about an axis line in parallel with the longitudinal direction of the light control member.

8. The light control device according to claim 6 , wherein
the longitudinal direction of the light control members and the second direction are in parallel with each other.

9. The light control device according to claim 1 , wherein an arrangement pitch of the second portions along the second direction is 1 mm or less.

10. The light control device according to claim 1 , wherein an aspect ratio of the second portion is greater than 1 and less than 10.

11. The light control device according to claim 1 , wherein a visible light transmittance of the first portions is greater than 50%.

12. The light control device according to claim 1 , wherein a refractive index of the first portions is greater than that of the second portions.

13. The light control device according to claim 1 , wherein the second portions further include a colorant configured to absorb visible light.

14. The light control device according to claim 1 ,
wherein an orientation of a first plurality of the light control members is adjusted by the support device, and an orientation of a second plurality of the light control members, other than the first plurality of light control members, is adjusted by the support device independently with respect to the first plurality of light control members, and
wherein the first plurality of the light control members is located above the second plurality of the light control members in an up and down direction.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Nishida Tomonori
• Moriya Norihisa
• Taniguchi Yukio
• Mitsuzuka Satoshi
• Sekido Masayuki

Classifications

• E06B2009/2643

  Screens between double windows · CPC title

• F21V11/04 Primary

  adjustable · CPC title

• E06B2009/2441

  Screens joined one below the other · CPC title

• F21V9/00

  Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters (coloured shades F21V1/00; elements characterised by cooling arrangements F21V29/502) · 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