Image display device

Patent metadata

Field	Value
Publication number	US-10959545-B2
Application number	US-201916630375-A
Country	US
Kind code	B2
Filing date	Mar 28, 2019
Priority date	Mar 30, 2018
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

An image display device includes an image display unit including a display panel, a shelf board, and an illumination unit. The display panel is switchable between an image display mode in which an image is displayed and a transmissive mode in which the display panel is in a transmissive state where objects behind image display unit is visible in a front view of the display panel. The shelf board is disposed projecting rearward from the rear surface of image display unit, and extends in the lateral direction. The illumination unit is disposed above the shelf board and emits light downward.

First claim

The invention claimed is:

1. An image display device, comprising:
an image display unit which includes a display panel switchable between an image display mode and a transmissive mode, the image display mode being a mode in which an image is displayed, the transmissive mode being a mode in which the display panel is in a transmissive state where an object behind the image display unit is visible in a front view of the display panel;
a shelf board which is disposed projecting rearward from a rear surface of the image display unit, the shelf board extending in a lateral direction; and
an illumination unit which is disposed above the shelf board and emits light downward,
wherein, in the image display mode, the illumination unit is turned off such that no light from any illumination unit within the image display unit is incident on a rear surface of the display panel.

2. The image display device according to claim 1 , wherein the illumination unit includes a first illumination unit fixed to an upper end portion of the rear surface of the image display unit.

3. The image display device according to claim 2 ,
wherein the shelf board includes a first shelf board and a second shelf board disposed below the first shelf board, and
the illumination unit includes a second illumination unit disposed at a base portion of the first shelf board, the second illumination unit emitting light toward the second shelf board.

4. The image display device according to claim 1 ,
wherein the illumination unit includes:
a light source unit which emits light; and
an optical element which is disposed on a light-emitting side of the light source unit and limits a distribution angle of the light.

5. The image display device according to claim 1 , further comprising:
a controller which controls an operation of the display panel and an operation of the illumination unit,
wherein the controller causes the illumination unit to emit light when the controller causes the display panel to operate in the transmissive mode, and causes the illumination unit to stop emitting light when the controller causes the display panel to operate in the image display mode.

6. The image display device according to claim 5 , wherein the controller is housed in the shelf board.

7. The image display device according to claim 1 , wherein the transmissive mode includes a first transmissive mode and a second transmissive mode, the first transmissive mode being a mode in which the display panel is in the transmissive state and the image is not displayed on the display panel, the second transmissive mode being a mode in which the display panel is in the transmissive state and the image is displayed only on a portion of the display panel.

8. The image display device according to claim 1 , further comprising:
a right-side wall connected to a right end portion of the shelf board and covering the image display unit from a right side, in the front view;
a left-side wall connected to a left end portion of the shelf board and covering the image display unit from a left side, in the front view; and
a top wall connected to an upper end portion of each of the right-side wall and the left-side wall, and covering the image display unit from above.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ina Tatsuya
• Kugimaru Tadahiro
• Onishi Ryouji
• Araya Jun

Classifications

• G09F19/12 Primary

  using special optical effects · CPC title

• G09F9/335 Primary

  being organic light emitting diodes [OLED] · CPC title

• A47F11/10 Primary

  Arrangements of light sources · CPC title

• G09F23/06

  the advertising matter being combined with articles for restaurants, shops or offices (on paper articles G09F23/10) · CPC title

• G09F13/12

  using a transparent mirror or other light reflecting surface transparent to transmitted light whereby a sign, symbol, picture or other is visible only when illuminated · CPC title