JP3049438B2 - Display device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device that continuously displays a fine color image.

2. Description of the Related Art Conventionally, many display devices have been known, such as those that simply display a plurality of posters or the like continuously, an electric bulletin board, a CRT, and a liquid crystal display.

[Problems to be Solved by the Invention] As such a display device, a device that simply displays a plurality of posters cannot display a new image and has a limited amount of information.

Next, electric bulletin boards, CRTs, and liquid crystal displays can display new images.However, electric bulletin boards always consume electricity and generate a lot of heat or cannot express fine images to display a single image. Therefore, it was not suitable for viewing nearby, and it was not possible to display a very large image on a CRT or liquid crystal display.

The present invention has a large display unit of, for example, OA size, such that about 10 to 20 humans can easily recognize the image as a display device. An object of the present invention is to provide an unprecedented display device capable of forming an image on a display sheet and displaying the image immediately.

Means for Solving the Problems The present invention solves the above problems by providing a continuous long display sheet, a printer section for conveying the display sheet to form a color image, and a printer section above the printer section. In a display device provided with a display unit that stands up and conveys and displays a display sheet on which a color image is formed upward from below, and a sheet guide path that guides the display sheet from the printer unit to the display unit, The sheet guide path includes a sheet conveyance stopping means for temporarily stopping the sheet conveyance to the display unit, and stores the printed display sheet conveyed from the printer unit for one screen and conveys the sheet again.

[Operation] In the display device of the present invention, the display sheet on which the color image is formed by the printer unit is temporarily conveyed while being guided and conveyed toward the display unit erected above the printer unit. , And then re-conveys one screen, transports it again, and transports and displays it from the bottom up on the display unit, so that a high-definition color image with new information recorded can be immediately developed and displayed. Can be.

Example An example of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view of a display device according to an embodiment of the present invention, and FIG. 2 is a front view of the display device.

The display device 1 includes a printer unit 2 and a display unit 3.

The printer unit 2 includes a paper 4 wound in a roll shape, a paper feed roller 5 and a roller 6 for feeding the paper 4, and a cutter 7.
And a printer 8 for printing a color image.

The printer 8 is a generally known color inkjet printer having a high resolution of 400 dpi.

The paper feed roller 5 is rotated by a motor (not shown), and the roller 6 is rotatably provided on an opening / closing lever 9. When the opening / closing lever 9 is closed, the roller 6 comes into contact with the paper feeding roller 5.

The color image data sent to the printer is sent from an external computer (not shown).

The paper guide path 12 for guiding the paper 4 toward the display unit 3 is formed by the roller 10 and the paper guide plate 11, and a pair of transport rollers 13 a and 13 b is provided in front of the display unit 3.

The lower transport roller 13a of the transport rollers 13a and 13b is driven by a motor (not shown), and the upper transport roller 13a
b is provided so as to be able to move toward and away from the lower transport roller 13a.

The paper guide switching plate 14 is located in the middle of the paper guide path 12, and when opened, the paper guide path 12 is opened toward the paper stocker 15.

The display unit 3 uses a large glass plate 16 to
Printer unit 2 with A0 size display area of 88mm and 840mm width
It is provided above. Further, a belt supporting roller 18 for stretching a belt 17 along the glass plate 16, a belt driving roller 19, and a roller paired with the belt driving roller 19
A total of 40 belt pressing rollers 21 for pressing the belt 17 against the glass plate 16 from the back side are provided in five stages of eight.

The belt 17 is a flexible sheet made of PET whose surface is covered with a rubber material.

The belt drive roller 19 is rotated by a belt drive motor 22 via a plurality of gear groups 23, and conveys the belt from the bottom to the top (in the direction of arrow A in FIG. 1) on the glass surface side.

On the back side of the display unit 3, a first winding roller 24 for winding the paper after displaying, and a second winding roller 25 for re-winding the paper 4 wound by the first winding roller 24 are provided. Each drive is performed by switching the rotation of the motor 26.

Next, from image formation to display of the display device 1,
First, when the leading end of the roll-shaped paper 4 is carried between the feed roller 5 and the roller 6 and the opening / closing lever 9 is closed,
The paper feed roller 5 rotates and paper is automatically fed.

Then, according to the image data given from the external computer, a well-known ink jet printer 8 is used.
As a result, a color image is formed.

At this point, the paper guide switching plate 14 is closed, and the paper 4 on which the image is formed and transported is guided by the paper guide switching plate 14 and the paper guide plate 11 to the transport rollers 13a and 13b.

When the leading end of the paper 4 transported to the transport rollers 13a and 13b is narrowed by the transport rollers 13a and 13b, the rotation of the transport roller 13a is stopped and the paper guide switching plate 14 is opened at the same time. The conveyance of the paper 4 is stopped by the stop of the conveyance roller 13a. However, since the paper 4 is conveyed from the printer section 2, the newly formed paper 4 is stored in the paper stocker 15.

When an image for one screen of the display area is formed and stored in the paper stocker 15, the transport roller 13a is rotated again, and the paper stocker 15 is rotated.
The paper 4 for one screen stored in the printer is transported together. At this time, the passage of the leading end of the paper is detected by a sensor (not shown), and the belt driving roller 19 is rotated.

Paper 4 transported between belt drive roller 19 and roller 20
Is transported between the glass plate 16 and the belt 17 by the rotation of the belt 17 and the roller 20. At this time, the upper conveying roller 13b
Is separated from the lower conveying roller 13a, and the lower conveying roller 1
3a stops again, and the resistance by the transport rollers 13a and 13b is eliminated.

The paper 4 transported between the glass plate 16 and the belt 17 is a belt
The glass plate 16 is conveyed upward from below by sliding the glass plate 16. At this time, since the belt 17 is entirely in contact with the glass plate 16 by the belt pressing roller 21, the paper 4 can be reliably conveyed, and good display can be performed without wrinkling.

The paper 4 is discharged to the back side of the display unit 3 as the belt 17 moves. Then, the paper 4 is wound by the first winding roller 24.

When a desired number of images are printed, the paper 4 is cut by the cutter 7 and the paper 4 is all wound around the first winding roller 24.

Data relating to the number of images to be displayed and the display time for each screen are sent from an external computer, and the display screen can be easily changed from the outside.

In the present embodiment, the image data is sent from an external computer, but may be data sent from a recording device such as an image scanner or a CDROM, or a case where these data supply devices are provided in a display device body. However, in this case, the number of strokes and the display time are also included in this data.

Although paper is used as a medium for printing an image, a film-like sheet material may be used.

According to this embodiment, a color image whose size and image quality are close to those of a poster is adjusted according to the environment around the display.
New displays can be made one after another from outside or according to preset information. In addition, since the image is an ink image, the same screen can be displayed with little power consumption, unless the image change data is sent, which is economical.

[Effects of the Invention] According to the present invention, a fine color image is formed on a display sheet by a printer unit, and is displayed by a sheet conveyance stopping unit provided in a sheet guide path during guide conveyance toward a display unit. After temporarily stopping the conveyance of the sheet and stocking one screen, the stopped state of the display sheet by the sheet conveyance stop means is released and the stock display sheet for one screen is conveyed to the display unit and displayed. It is possible to provide a display device that displays a high-definition color image similar to a poster, which is easy for a person near the display device to see, in a short time without being affected by the printing speed. Further, since the image is a print image, power consumption is low during the display of the same image, which is economical. Further, according to the configuration of the present invention, a large screen image can be easily displayed simply by increasing the size of the display sheet and the display unit.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a display device according to an embodiment of the present invention. FIG. 2 is a front view of a display device according to the embodiment of the present invention. 1 is a display device, 4 is paper, 8 is a printer, 16 is a glass plate, 17 is a belt, 18 is a belt support roller, 19 is a belt drive roller, 21 is a belt pressing roller, and 22 is a belt drive motor.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-93579 (JP, A) JP-A-1-105659 (JP, A) JP-A-62-147479 (JP, A) 120590 (JP, U) Actually open 63-162380 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G09F 11/00-11/22 H04N 1/00 H04N 1/04 B41J 3/04 101

Claims (5)

(57) [Claims] 1. A continuous, long display sheet, a printer section for conveying the display sheet and forming a color image, and a display sheet standing upright above the printer section and having a color image formed thereon, from below. In a display device provided with a display unit for conveying and displaying upward, and a sheet guide path for guiding a display sheet from the printer unit to the display unit, the sheet guide path includes a transfer of the display sheet to the display unit. A sheet conveyance stopping means for stopping the display sheet, which stops the conveyance of the display sheet conveyed from the printer unit by the sheet conveyance stopping means and stores the color image for one screen, and then stops the display sheet by the sheet conveyance stopping means. A display device, wherein a display sheet for one screen that has been released and stocked is transported to a display unit. . 2. A display unit, comprising: a transparent plate erected above a printer unit; and a transparent plate along the transparent plate and in contact with the transparent plate so as to convey a display sheet upward from below along the transparent plate. The display device according to claim 1, further comprising: a belt that is stretched and driven in a stretched state, and conveys the display sheet by pressing the display sheet against the transparent plate with the belt. 3. The display device according to claim 2, further comprising a plurality of belt pressing rollers for pressing the transport belt against the transparent plate on the back side of the transport belt. 4. The display device according to claim 1, wherein the printing method of the printer unit is an ink jet method. 5. The display device according to claim 1, further comprising a sheet guide switching plate having a part thereof opened upstream of the sheet conveyance stopping means in the sheet guide path, and the sheet being brought close to an opening formed by the sheet guide switching plate. A sheet storage section is provided.A part of the sheet guide path is opened by a sheet guide switching plate during image formation, and conveyance of the display sheet is stopped by sheet conveyance stop means, and the printed display sheet conveyed from the printer section to the sheet storage section. Display device for stocking one screen.