Shading device

Patent metadata

Field	Value
Publication number	US-11084358-B2
Application number	US-202016983318-A
Country	US
Kind code	B2
Filing date	Aug 3, 2020
Priority date	Apr 14, 2017
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A shading device comprises: a shading member formed using a dimming glass plate capable of changing light transmittance, the shading member having a plate shape; a display apparatus being capable of transmitting light and disposed on a surface of the shading member, the surface being to face an operator during use of the shading member, in such a manner that a display portion faces the operator; an image pickup device to pick up, as an image, a region which an opposite surface of the surface faces, and generate image pickup data; a data processing circuit to generate display image data to be displayed on the display portion during use of the shading member, based on the image pickup data generated by the image pickup device; and a switch to change light transmittance of the dimming glass plate.

First claim

What is claimed is:

1. A shading device comprising:
a shading member formed using a dimming glass plate that is capable of changing light transmittance, the shading member having a plate shape;
a display apparatus being separate from the dimming glass plate and capable of transmitting light, wherein the display apparatus is disposed on a surface of the shading member, the surface being to face an operator during use of the shading member, in such a manner that a display portion faces the operator;
an image pickup device to pick up, as an image, a region which an opposite surface of the surface faces, and generate image pickup data;
a data processing circuit to generate display image data to be displayed on the display portion during use of the shading member, based on the image pickup data generated by the image pickup device;
a switch to change light transmittance of the dimming glass plate;
a detector to detect a position of the shading member;
a control circuit to control the display apparatus to an OFF state when the light transmittance of the dimming glass plate is greater than or equal to a given reference value, and control an ON/OFF state of the display apparatus based on a result of detection of the detector when the light transmittance of the dimming glass plate is less than the given reference value; and
a sensor capable of detecting intensity of light, the sensor being provided on each of the surface and the opposite surface of the shading member, wherein
the control circuit controls the display apparatus to the OFF state in a case where a difference in output between the sensor being provided on the surface of the shading member and the sensor being provided on the opposite surface of the shading member is smaller than a given reference value, and
the shading device is configured to display, with the display apparatus, a view being obstructed by the dimming glass plate when the dimming glass plate obstructs a light illuminating the shading member.

2. The shading device according to claim 1 , further comprising a first driver provided separately from the display apparatus to output a signal used to drive a pixel of the display apparatus, based on the display image data, wherein
the display apparatus comprises a substantially rectangular display screen, and
the first driver is disposed at a first edge portion of edge portions of the shading member, the first edge portion being along a longitudinal direction of the display screen and to be oriented to an upper side during use of the shading member.

3. The shading device according to claim 1 , further comprising a first driver provided separately from the display apparatus to output a signal used to drive a pixel of the display apparatus, based on the display image data, wherein
the display apparatus comprises a substantially rectangular display screen, and
the first driver is disposed at a second edge portion of edge portions of the shading member, the second edge portion being along a short edge direction of the display screen.

4. The shading device according to claim 1 , wherein the display apparatus is an organic EL display panel.

5. The shading device according to claim 4 , wherein
the organic EL display panel comprises a plurality of subpixels, each one of the plurality of subpixels comprising a cathode and an anode;
the plurality of subpixels comprises at least three subpixels that are for respective colors different from one another;
the cathode and the anode are disposed with a gap between the cathode and the anode, the gap having a length different from a wavelength of light emitted from each one of the plurality of subpixels so that a micro-cavity effect is not utilized in each one of the plurality of subpixels; and
the cathode and the anode are spaced from each other by substantially equal distance among the at least three subpixels.

6. The shading device according to claim 1 , wherein the image pickup device comprises a lens comprising a surface on which a coating layer to reduce reflection of light by adjusting a refractive index is formed.

7. The shading device according to claim 1 , wherein the display portion entirely overlaps with the dimming glass plate.

8. The shading device according to claim 4 , wherein
the organic EL display panel comprises a plurality of subpixels, each one of the plurality of subpixels comprising a cathode and an anode;
the plurality of subpixels comprises at least three subpixels that are for respective colors different from one another;
in each of all subpixels in the plurality of subpixels, the cathode and the anode are disposed with a gap between the cathode and the anode, the gap having a length different from a wavelength of light emitted from each one of the plurality of subpixels so that a micro-cavity effect is not utilized.

9. A shading device comprising:
a shading member formed using a dimming glass plate that is capable of changing light transmittance, the shading member having a plate shape;
a display apparatus being separate from the dimming glass plate and capable of transmitting light, wherein the display apparatus is disposed on a surface of the shading member, the surface being to face an operator during use of the shading member, in such a manner that a display portion faces the operator;
an image pickup device to pick up, as an image, a region which an opposite surface of the surface faces, and generate image pickup data;
a data processing circuit to generate display image data to be displayed on the display portion during use of the shading member, based on the image pickup data generated by the image pickup device;
a switch to change light transmittance of the dimming glass plate;
a detector to detect a position of the shading member;
a control circuit to control the display apparatus to an OFF state when the light transmittance of the dimming glass plate is greater than or equal to a given reference value, and control an ON/OFF state of the display apparatus based on a result of detection of the detector when the light transmittance of the dimming glass plate is less than the given reference value; and
a first driver provided separately from the display apparatus to output a signal used to drive a pixel of the display apparatus, based on the display image data, wherein
the display apparatus comprises a substantially rectangular display screen,
the first driver is disposed at a first edge portion of edge portions of the shading member, the first edge portion being along a longitudinal direction of the display screen and to be oriented to an upper side during use of the shading member, and
the shading device is configured to display, with the display apparatus, a view being obstructed by the dimming glass plate when the dimming glass plate obstructs a light illuminating the shading member.

10. The shading device according to claim 9 , wherein the display apparatus is an organic EL display panel.

11. The shading device according to claim 10 , wherein
the organic EL display panel comprises a plurality of subpixels, each one of the plurality of subpixels comprising a cathode and an anode;
the plurality of subpixels comprises at least three subpixels that are for respective colors different from one another;
the cathode and the anode are disposed with a gap between the cathode and the anode, the gap having a length different from a wavelength of light emitted from each one of the plurality of subpixels so that a micro-cavity effect is not utilized in each one of the plurality of subpixels; and
the cathode and the anode are spaced from each other by substantially equal distance among the at least three subpixels.

12.

Assignees

• Sakai Display Products Corp

Inventors

• Kishimoto Katsuhiko

Classifications

• B60J3/04 Primary

  adjustable in transparency · CPC title

• B60R2300/202

  displaying a blind spot scene on the vehicle part responsible for the blind spot · CPC title

• B60J3/02

  adjustable in position {(B60J3/002, B60J3/005 take precedence)} · CPC title

• B60R11/0235

  of flat type, e.g. LCD · CPC title

• B60R2011/0035

  Sun visors · CPC title