JPH1134581A - Image display board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily display image information from a personal computer or video by space conservation by providing a plasma display panel(PDP) for displaying an image in an image display board via a display window and a signal input/output circuit for displaying an image signal on the PDP. SOLUTION: A thermal printer 8 for printing a lithographic character or picture, a signal box 9 for receiving an input signal such as a video signal, remote control signal and the like of a personal computer, and an image control box 10 for switching an image display board and PDP display and regulating an image of a PDP are disposed on a lower part of the board 1. In the case of displaying the image on the PDP 4, a sheet is wound on a winding shaft 14, the PDP 4 is exposed with a surface plate to display the image such as the video of the computer input to the box 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display board having a function of copying characters, figures, and the like drawn on a sheet that can be called, for example, an electronic blackboard.

[0002]

2. Description of the Related Art Conventionally, after drawing characters and pictures on a sheet called an electronic blackboard, the sheet is taken up and moved, an image is read by an optical device such as a scanner, and the image is printed out on a recording paper by a printer. Display boards are known.

[0003]

However, since the conventional image display board has only a function of displaying characters and pictures drawn on a sheet and printing out the image information, it cannot display image information from a personal computer, a video or the like. The functions of transmitting and displaying information in meetings, presentations, etc., were insufficient. Therefore, to display image information, an image display board is used in combination with a CRT display, a projector, and the like. However, in addition to the image display board, these display devices need to be set and installed, and there is a problem in terms of usability. Was.

An object of the present invention is to provide an image display board capable of easily displaying image information from a personal computer, a video or the like in a space-saving manner in addition to the conventional image display board function.

[0005]

In order to solve the above-mentioned object, an image display board according to the present invention moves a sheet on which characters, pictures, etc. are drawn from left to right or up or down from the board surface, thereby exposing a board table to be exposed. A plasma display panel (hereinafter referred to as PD) that opens a display window of a predetermined size on the face plate and displays an image through the display window inside the image display board.
P), and a signal input / output circuit for displaying an image signal on the PDP.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view showing a first embodiment of the present invention, and shows a state after a sheet has been wound and moved. FIG. 2 is an external view showing a state in which the sheet 2 is moving (the moving direction is indicated by an arrow in the figure). Image display board 1
A display window 4 is opened on the surface plate 3 and a PDP 5 is arranged inside an image display board through which an image can be viewed through the display window 4. Further, a transparent or color filter flat plate (not shown) made of glass or plastic for protecting the PDP 4 and obtaining good contrast is embedded in the display window 4. The display window 4 and the PDP 5 are arranged at the center of the surface plate such that the centers thereof substantially coincide with the center of the surface plate 3. The size of the PDP 5 varies depending on the size of the image display board 1, in other words, the size of the surface plate 3, but the diagonal length of the surface plate 3 is L1 and the same length of the PDP 5 is L2 (not shown).
, The relationship of L1 ≧ L2 is obtained.
Note that the size of the display window 4 is changed according to the size of the PDP 5, and the point is that the size of the image display of the PDP 5 should be indispensable when viewed from the front of the image display board. In the case of L1 = L2, the display window 4 is not necessary, and the transparent or color filter flat plate is arranged on the surface of the PDP, and the flat plate becomes the surface plate of the board. Specifically, the size of the PDP 5 is selected within the range of 20 to 70 inches, but a required size may be obtained by combining a plurality of PDPs. Furthermore, if the aspect ratio of the PDP 5 is set to a ratio used in a general display of 4: 3 or 16: 9, compatibility with the PDP used for the purpose other than the present invention can be obtained, and maintenance and cost are advantageous. It is. However, this ratio is not definitive, and another ratio may be selected depending on the size and the aspect ratio of the image display board. In addition, the entire surface plate 3 is colored in a dark color such as black or gray to prevent surface reflection from external light and make it easier to view the image of the PDP 5.

The image display board 1 is supported by two columns 7 having casters 6, and a printer 8, a personal computer, a video signal and the like for printing drawn characters and pictures, etc. Signal box 9 for receiving input signals, remote control signals, etc.
An image control box 10 and the like for switching between DP display and adjusting a PDP image are arranged. Note that these arrangements do not have to be arrangements and forms other than those shown in FIGS. 1 and 2 as long as they have the function. Further, in order to reduce the temperature rise inside the image display board caused by the PDP 5, a plurality of heat radiating fans 11 are mounted on the upper portion of the image display board. The mounting position of the heat dissipating fan 11 is not limited as long as the heat dissipating effect can be obtained even at a position other than the upper portion of the image display board shown in FIGS.

FIG. 3 is a schematic internal view of the image display board 1 for explaining the positional relationship between the PDP 5 and the surface plate 3. As shown in FIG. PDP5
Is disposed at a position away from the surface plate 3, and a color filter 12 is provided between the PDP 5 and the surface plate 3. It is attached so as to substantially coincide with the face plate 3. In some cases, the color filter 12
The surface may be protected by attaching glass or hard plastic to the surface. Next, a sheet winding method and a sheet shape will be described.

FIG. 4 is a schematic view of the first winding method, in which the surface plate 3 and the color filter 12 shown in FIG. 3 are not shown. The sheet 2 is moved and stored by two winding shafts 14 and 15 which are driven to rotate by motors 13a and 13b provided in the image display board. A belt 16 having a width that is not exposed to the surface plate is attached to the upper and lower ends of the sheet 2 on the winding shaft 15 side, and the end is connected to the winding shaft 15. The motors 13a and 13b attached to the respective take-up shafts are controlled by the controller 17, and are operated, for example, by control signals from an image control box 9 attached to the lower part of the image display board. When performing the PDP display, the sheet 2 is taken up by the take-up shaft 14 rotated and driven by the motor 13a and removed from the surface plate. At this time, the motor 13b is controlled so that the sheet 2 does not bend or twist. The back tension is applied to the sheet 2. Further, the take-up shaft 14 is provided with a sheet guide (not shown) having a spiral groove so as to separate the front and back surfaces of the sheet so that characters, pictures, etc. drawn on the sheet 2 are not erased due to the overlap of the sheets. ing.

FIG. 5 is a cross-sectional view of the sheet 2 after the sheet 2 has been wound. The sheet 2 is spirally wound outward from the center of the winding shaft 14 so that the front and back surfaces do not contact each other. . When returning the sheet to the original position on the surface plate, the belt 16 is wound around the winding shaft 15 by the motor 13b, the sheet is pulled out from the other winding shaft 14, and is stopped at a predetermined position on the surface plate. Also in this case, back tension is applied to the seat 2 by the motor 13a. In addition, depending on the mechanical strength of the sheet 2, a reinforcing material such as plastic or metal may be inserted in the sheet width direction at the joint between the sheet 2 and the belt 16.

FIG. 6 is a schematic view showing another winding method, in which a surface plate and a color filter are omitted. The sheet 2 is moved by two winding shafts 14 and 15 to P
It moves so as to go around the inside of the image display board through the back surface of DP4. Also in this case, a predetermined tension is applied to the sheet 2 by the motors 13a and 13b provided on the respective winding shafts, so that the sheet 2 is prevented from being bent or twisted. Also, sheet 2 is about 1/2 of the length direction
Is a transparent sheet 17, and the motor is controlled so that the transparent sheet 17 is positioned on the surface plate during PDP display. Further, the moving direction of the sheet 2 is not limited to one direction indicated by the arrow in FIG. 6, but the motors 13a and 13b may be reversely rotated to return the sheet 2 moved from the surface plate to the original position.

As described above, the sheet 2 shown in FIGS.
The winding method described above is for the case where the sheet is moved in the left and right direction of the image display board, but the sheet 2 can be wound in the vertical direction of the image display board in exactly the same manner.

Next, the operation of the image display board of the present invention will be described with reference to FIGS.

First, when used as an image display board, the belt 16 is wound around a winding shaft 15 and the sheet 2
Is pulled out from the take-up shaft 14 so that the sheet 2 comes over the entire surface plate 3 shown in FIG. In the case of printing out after drawing characters and pictures, the drawn image is captured by a conventional image sensor or the like while the sheet 2 is wound around the winding shaft 14 and hard-copyed to the printer 7. When an image is to be displayed on the PDP 4, the sheet 2 is similarly wound around the winding shaft 14, the PDP 4 is exposed on the surface plate, and image information such as a personal computer or video input to the signal box 9 is displayed. When used again as an image display board, the belt 16 of the sheet 2 is wound around the winding shaft 15 and the sheet 2 is pulled out from the winding shaft 14 and used. As described above, since it is possible to switch between drawing of characters and pictures and image display only by moving the sheet, it is possible to obtain an image display board which is easy to use and has an excellent information display function.

In the embodiment described above, an example is described in which the PDP panel is arranged at the center of the image display board. However, the arrangement is not limited to the embodiment, and another arrangement may be used. FIG. 7 shows another arrangement example.
P5 is located on the right side of the face plate 3. With the arrangement shown in FIG. 7, the sheet 2 is moved about half of the surface plate 3 so that characters and pictures are drawn on the sheet at the same time.
Image information can be displayed on DP5.

Although not described in the embodiments, a circuit for panel driving and signal input / output for displaying an image on the PDP 5 inside the image display board, and an interface circuit for external information equipment such as a personal computer and a VTR are provided. Needless to say, is arranged. Further, a speaker may be attached to the side of the image display board or the like to output an audio signal. Further, an interface circuit can be provided so that the image displayed on the PDP 5 can be copied to the printer 8.

[0018]

As described above, according to the present invention, in addition to a conventional drawing function of a picture and a character as an image display board, an image signal from a personal computer, a video or the like is also displayed on the plasma display in the image display board. can do.
Therefore, an image display board which is space-saving and has various information display functions can be obtained.

[Brief description of the drawings]

FIG. 1 is an external view of an image display board according to an embodiment of the present invention.

FIG. 2 is an external view showing a sheet moving state.

FIG. 3 is an explanatory diagram showing a positional relationship of the plasma display panel.

FIG. 4 is an explanatory diagram showing a sheet winding method and a sheet shape.

FIG. 5 is a cross-sectional view showing a wound shape of the sheet.

FIG. 6 is an explanatory view showing another sheet winding method and a sheet shape of the present invention.

FIG. 7 is an external view showing another plasma display panel arrangement of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Image display board 2 ... Sheet 5 ... Plasma display panel 12 ... Filters 14 and 15 ... Winding axis

Continuing on the front page (72) Inventor Tatsu Nakamura 4-6, Kanda Surugadai, Chiyoda-ku, Tokyo Inside the Home Appliances and Information Media Business Division, Hitachi, Ltd. (72) Inventor Yasumasa Todaka 4-6-1, Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi, Ltd., Home Appliances & Information Media Business Division

Claims (5)

[Claims] 1. An image display board having a function of copying and printing out characters, pictures, etc. drawn on a sheet, comprising: means for exposing a sheet board on a winding shaft to expose a board surface; A display window opened in a part of the surface plate, a plasma display panel for displaying image information through the display window inside the board, and a signal input / output circuit for displaying an image on the panel. Image display board. 2. The image display board according to claim 1, wherein a transparent or color filter flat plate is embedded in the display window so as to be flush with the board surface plate. 3. The image display board according to claim 1, wherein the plasma display panel is located substantially at the center of the board surface. 4. The image display board according to claim 1, wherein a winding belt having a width at least not exposed to the board surface plate is provided at one of the upper and lower ends of the sheet. 5. The image display board according to claim 1, wherein the sheet orbits around the plasma display, and about 1/2 of the sheet orbit length is made of a transparent sheet.