Electronic blackboard system

Abstract

To provide an electronic blackboard system that can realize the GIGA School Initiative without changing the existing whiteboard, can be installed at a relatively low cost and in a very short time, enables lessons based on blackboard writing, which is a teaching method familiar to both children / students and teachers, and can store contents of the blackboard writing as digital data.SOLUTION: A display 3, which is an electronic blackboard, and a writing board 1 capable of displaying two screens using a projector 2 are placed side by side. The display 3 is placed on one or both sides of the writing board 1, and can be moved up one half of the writing board 1. The display 3 and the writing board 1 are attached to a single truss structure frame 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electronic whiteboard system, and more specifically, to an electronic whiteboard system that has a simple configuration, can be introduced at low cost, and is suitable for realizing the GIGA School Project. [Background technology]

[0002] Following the announcement of the GIGA School Initiative implementation package in 2019, schools have established in-school LANs and are rapidly introducing and utilizing ICT in schools. The core of the GIGA School Initiative is the creation of an educational ICT environment that is personalized for each child and student and fosters creativity. Specifically, each child and student will be given a learning device (tablet), and lessons will be conducted using electronic whiteboards installed in each classroom.

[0003] However, blackboards are installed in each classroom, and lessons in schools have long been based on writing on the blackboard, which is a teaching method familiar to both students and teachers, and is difficult to abandon even with the advancement of ICT education. On the other hand, there are limitations in terms of budget and installation space to prepare electronic blackboards in addition to conventional blackboards in each classroom. In particular, it is extremely difficult and unrealistic to introduce large electronic blackboards to replace blackboards.

[0004] Therefore, it has been considered and put into practical use to use an existing blackboard or whiteboard, place a projector on the top of the board, and project an image onto the board to turn the board into an electronic blackboard (a board for writing) (JP Patent Publication No. 2021-128299 and JP Patent Publication No. 2018-189925). However, in this case, there are problems such as the inability to save the contents written on the board as digital data. It has also been considered to go a step further and embed a sensor in the periphery of an existing blackboard to detect the movement of a pen or fingertip, thereby turning it into an electronic blackboard, but in that case, there is a risk that chalk dust will inhibit the function of the sensor.

[0005] On the other hand, blackboards are becoming increasingly old, and the demand for their renewal is increasing every year. For example, the most common method for renewal of blackboards is to remove the old blackboard while leaving the frame, apply a magnetic sheet, and then put a new surface material on top of that and return it to the original frame, which is cost-effective. However, this method of re-pasting the surface material is quite costly, even though it is less expensive than a complete replacement. In addition, the weight of a large blackboard exceeds 50 kg, so the removal and installation work requires 4 to 5 workers. Moreover, the replacement work takes about 4 hours per classroom, and since it must be done intensively during non-class hours and periods for many classrooms, the work is extremely tough. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent Publication No. 2021-128299 [Patent Document 2] JP 2018-189925 A Summary of the Invention [Problem to be solved by the invention]

[0007] As mentioned above, providing an electronic whiteboard in addition to a conventional blackboard poses problems in terms of budget and installation space, and when converting an existing blackboard or whiteboard into an electronic whiteboard by installing a projector, there is the problem that the contents written on the board cannot be saved as digital data. On the other hand, there is the reality that a great deal of cost and effort is spent on renovating a blackboard.

[0008] The present invention has been made in consideration of this current situation, and its objective is to provide an electronic whiteboard system that can realize the GIGA School Initiative without changing the existing whiteboard, can be installed at relatively low cost and in a very short time, enables lessons based on blackboard writing, a teaching method that is familiar to both children / students and teachers, and can also store the contents of the blackboard as digital data. [Means for solving the problem]

[0009] The invention according to claim 1 for solving the above problem is an electronic whiteboard system characterized by juxtaposing an electronic whiteboard display and a writing board capable of displaying two screens using a projector.

[0010] In one embodiment, the display is disposed on one side of the interactive board and can be moved onto one half of the writing board, or the displays are disposed on both sides of the writing board and can be moved onto one half of the writing board, respectively. Also, in one embodiment, the interactive board has an erase function and a screen function.

[0011] In one embodiment, the display and the writing board are attached to a single fixing frame. Preferably, the fixing frame is a truss structure frame formed by connecting a plurality of framework members to joints having a number of bolt holes on the periphery. In one embodiment, the truss structure frame has a plurality of square sections connected to each other on the front side, a quadrangular pyramid section formed on the rear side of the square sections, and triangular pyramid legs connected to the lower side of the square sections at both ends.

[0012] In one embodiment, a projector mounting board is installed on the fixed frame so as to protrude upward.

[0013] In one embodiment, the display can be swivelled and moved onto the writing board while facing forward by a swing mechanism provided on the truss structure frame. In one embodiment, the swing mechanism includes a base frame fixed to the truss structure frame, a swivel frame pivotally supported on the base frame so as to be freely swivelled, and a display fixing frame pivotally supported on an end of the swivel frame via a support shaft, and the back surface of the display is fixed to the display fixing frame.

[0014] The invention of claim 11 for solving the above problem is an electronic whiteboard system comprising an electronic whiteboard display movably installed on one half of an existing whiteboard fixed to a wall on one or both sides of the wall.

[0015] In one embodiment, the display can be swivelled and moved above one half of the existing blackboard while facing forward by a swing mechanism consisting of a base frame fixed to the wall, a swivel frame pivotally supported by the base frame, and a display fixing frame pivotally supported by an end of the swivel frame via a support shaft. The existing blackboard includes curved and semi-curved blackboards, lift-up and pull-out blackboards.

[0016] The invention of claim 14 for solving the above problem is an electronic whiteboard system characterized in that one or two displays which are electronic whiteboards are installed on the lower waist wall below an existing whiteboard which is fixed to a wall surface, and one or both of the displays are movable above one half of the existing whiteboard.

[0017] In one embodiment, the display can be swiveled and moved above one half of the existing blackboard while facing forward by a swing mechanism consisting of a base frame fixed to the waist wall, a swivel frame supported by the base frame so as to be freely rotatable, and a display fixing frame supported by an axis at the end of the swivel frame.

[0018] The invention according to claim 16 for solving the above problem provides an electronic whiteboard system in which a display and a writing board are arranged side by side so that the electronic whiteboard can be moved over the writing board, the electronic whiteboard comprising a swing mechanism for moving the electronic whiteboard over the writing board, The electronic whiteboard swing mechanism comprises a base frame, a rotating frame supported by the base frame so as to be freely rotatable, and a display fixing frame supported by an end of the rotating frame via a support shaft. Effect of the Invention

[0019] As described above, the present invention has the advantage that an electronic whiteboard system that can realize the GIGA School Project can be installed in a very short time at relatively low cost by being placed on top of an existing whiteboard, and in addition to lessons utilizing the increasingly sophisticated functions of electronic whiteboards, it enables lessons based on blackboard writing, a teaching method that is familiar to both children / students and teachers, and furthermore, the contents of the blackboard can be saved as digital data.

[0020] In another embodiment of the present invention, an existing blackboard can be left usable as is, and the above-mentioned electronic blackboard system can be installed on one or both sides, or underneath, resulting in the installation of an electronic blackboard system that can realize the GIGA School Concept at relatively low cost in a very short period of time. [Brief description of the drawings]

[0021] [Figure 1] 1 is a partially cutaway front view showing the overall configuration of an electronic whiteboard system according to the present invention. [Diagram 2] 1 is a perspective view showing a rotation operation of an electronic whiteboard in an electronic whiteboard system according to the present invention; [Diagram 3] 1 is a side view of an electronic whiteboard system according to the present invention. [Figure 4] 1 is a plan view of an electronic whiteboard system according to the present invention. [Diagram 5] FIG. 1 is a plan view of an electronic whiteboard system according to the present invention, in which a rotating motion of the electronic whiteboard is implemented. [Figure 6]FIG. 2 is an exploded view showing a swing mechanism in the electronic whiteboard system according to the present invention. [Figure 7] 11A to 11C are diagrams showing a method of attaching a swing mechanism in the electronic whiteboard system according to the present invention. [Figure 8] 10A and 10B are diagrams showing a configuration of a pivot support part of a swing mechanism in the electronic whiteboard system according to the present invention; [Figure 9] FIG. 11 is an explanatory diagram of an interactive whiteboard system according to a second invention. [Figure 10] FIG. 11 is an explanatory diagram of another embodiment of the interactive whiteboard system according to the second invention. [Figure 11] FIG. 11 is an explanatory diagram of still another embodiment of the interactive whiteboard system according to the second invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The embodiment of the present invention will be described in detail with reference to the attached drawings. The electronic whiteboard system according to the present invention includes two inventions. The first invention is to install the system by covering an existing blackboard (blackboard or whiteboard) without using it, and the second invention is to build the system according to the present invention while keeping the existing blackboard in a usable state.

[0023] The first invention is characterized by juxtaposing a display, which is an electronic whiteboard, and a writing board capable of displaying two screens using a projector. The electronic whiteboard system according to the first invention comprises a writing board 1 to which a projector 2 is attached to make it interactive, and a display 3, which is an electronic whiteboard, arranged on either the left or right side of the writing board 1, or on both sides of the writing board (in the example shown in FIG. 1, it is arranged on the left side when viewed from the front), and the writing board 1 and the display 3 are installed on a common fixing frame that is fixed on an existing blackboard or a wall surface. The existing blackboard is not limited to a flat blackboard, and may be a curved blackboard, a semi-curved blackboard, or the like.

[0024] The writing board 1 is a whiteboard or blackboard that can be projected (preferably a mixture of gray and green or gray and white that is compatible with projection and has low reflection) that can function as an electronic blackboard by attaching a projector 2. These whiteboards or blackboards are familiar to teachers and students, and allow writing with chalk or the like and erasing with a blackboard eraser or the like.

[0025] The fixing frame on which the writing board 1 and the electronic whiteboard 3 are installed is a truss structure frame 11 formed by connecting a plurality of framework members 13 to a metal ball joint 12 having a large number of bolt holes on its periphery, and forming a truss structure. There are various types of joints 12 and framework members 13 for forming this truss structure frame 11, and any of them can be used. The truss structure frame 11 formed by the joints 12 and framework members 13 is a framework that is resistant to bending forces, and has the advantage of being able to reduce the total number of components and thus the cost and weight.

[0026] The truss structure frame 11 in the illustrated example is made up of four quadrangular pyramid space trusses A arranged side by side, with legs formed by triangular pyramid space trusses B connected to the bottom of the space trusses A at both ends. Each space truss A, B is formed by a large number of joints 12 and framework members 13. A large number of bolt holes for screwing in the framework members 13 are formed on the periphery of the joints 12, and the framework members 13 are screwed into the bolt holes suitable for generating the above shape by selecting them.

[0027] The space truss A is composed of four joints 12 and four frame members 13 that form a quadrangle, and four frame members 13a that extend diagonally backward from the four joints 12 and converge at joint 12a, which is the apex of the quadrangular pyramid (see Figure 3). The two middle space trusses A share some of the joints 12 and frame members 13 with the adjacent space trusses A. These four space trusses A arranged side by side are positioned to cover the surface of the existing blackboard 40. Depending on the size of the existing blackboard 40, part of the truss structure frame 11 may be exposed and not covered.

[0028] Moreover, the space truss B that forms the legs is composed of a pair of frame members 13b that extend diagonally downward from the joints 12 of the space truss A at both ends and converge at the joint 12b that is the apex of the triangular pyramid, and a frame member 13c that rises from the joint 12b and connects to the joint 12a of the space truss A above it. In this case, the frame member 13b is inclined diagonally backward toward the joint 12b, so the space truss B does not get in the way of the feet. Furthermore, the joints 12a at each apex of the four space trusses A may be connected and strengthened by horizontally placed frame members 13d (see Figure 6).

[0029] A projector installation plate 14 and a support 15 for mounting an interface box 15a of the projector are mounted on the truss structure frame 11. The projector installation plate 14 is made up of a flat plate 14a for fixing the arm of the projector 2 and two legs (not shown) extending downward from the flat plate, and the middle and lower ends of the legs are fixed to the horizontal framework members 13 of the truss structure frame 11 by U-bolts or the like. Similarly, the support 15 is fixed to the horizontally arranged framework members 13 of the truss structure frame 11 by U-bolts or the like.

[0030] A swing mechanism for moving the display 3 from a position where it does not overlap the writing board 1 (see FIG. 1) to a position where it overlaps with one half of the writing board 1 (see FIG. 2) is further attached to one end of the truss structure frame 11. For example, the swing mechanism is composed of a base frame 21 fixed to the truss structure frame 11, a swivel frame 22 rotatably supported by the base frame 21, and a display fixing frame 23 rotatably supported by an end of the swivel frame 22 via a support shaft 24, and the back surface of the display 3 is fixed to the display fixing frame 23 by any method, so that the display 3 can swing relative to the swivel frame 22 via the support shaft 24 and can also be rotated integrally with the display fixing frame 23 following the rotational movement of the swivel frame 22 (see especially FIGS. 6 and 7).

[0031] For example, the base frame 21 is a rectangular metal frame whose upper surface is bolted to an upper frame 31 fixed to a plurality of joints 12 forming the upper side of the space truss A, and whose lower surface is bolted to a lower frame 32 fixed to a plurality of joints 12 forming the lower side of the space truss A, thereby being fixed to the truss structure frame 11 (see FIG. 7). The base frame 21 is fixed and installed in this way to support the swivel frame 22, display fixing frame 23, and display 3, which may weigh more than 100 kg in total, and has been proven to have sufficient rigidity.

[0032] Axle support plates 21b are installed above and below one vertical frame of the base frame 21, and engage with L-shaped metal fittings 22a arranged above and below the vertical frame at one end of the swivel frame 22. The pivot support plate 21b has a bolt hole 21c formed in the center and a semicircular (180-degree) guide hole 21d surrounding the bolt hole 21c, and is fixed to the upper surface of an angle member 21a extending horizontally on the base frame 21 (see FIG. 8). The L-shaped metal fitting 22a of the swivel frame 22 is placed on the pivot support plate 21b and attached to the pivot support plate 21b with an axle bolt 25, so that the pivot frame 22 can rotate about the axle bolt 25 relative to the base frame 21. At the same time, a guide bolt 26 is inserted into the guide hole 21d through the L-shaped metal fitting 22a. The guide bolt 26 slides along the guide hole 21d. The revolving frame 22 is reinforced by one diagonal brace 22b or two cross braces 22b, as required.

[0033] Thus, the swivel frame 22 can rotate around the shaft bolt 25 within the range regulated by the guide hole 21d, that is, 180 degrees. In addition, the display fixing frame 23, which is supported on the end of the swivel frame 22 via the support shaft 24, and the display 3 installed therein also rotate together with the swivel frame 22. During this rotation, the display 3 can swing relative to the swivel frame 22 via the support shaft 24, so it can always be moved while facing forward.

[0034] In this way, the display 3 can be moved from a position where it does not overlap the writing board 11 shown in FIG. 1 to a position where it overlaps part of it (see FIGS. 2 and 5), but the rotating frame 22 can be stopped at any position without moving to its rotation end, and the display 3 can be turned in a desired direction at any position, that is, in a direction that is easy for all students to see. In order to facilitate such movement and angle adjustment of the display 3, it is preferable to provide a handle 27 on the side and / or bottom of the display 3. For example, the handle 27 can be provided on the bottom of the auxiliary frame 28 that is installed so as to surround the mounting frame 23 (see FIGS. 1 and 3). In addition, a gas spring (gas damper) may be provided at an appropriate location to assist the rotation operation of the display 3.

[0035] Although the above configuration example is for the case where the display 3 is placed on either the left or right side of the writing board 1, the display 3 can also be configured to be installed on both sides of the writing board 1. That is, the truss structure frame 11 can be made longer horizontally by selecting framework members 13 of different lengths and by increasing the number of space trusses A. The swing mechanism can be arranged in the parts of the truss structure frame 11 that protrude on both sides of the writing board 1, and a display 3 can be installed on each of them. Note that, due to dimensional considerations, the existing blackboard 40 may not be entirely covered, and part of it may be exposed.

[0036] The truss structure frame 11 configured as above is easy to assemble and disassemble, and can be disassembled, transported to the construction site, and assembled in a short time. After assembly, when fixing to the existing blackboard 40, first, the pair of joints 12b of the space truss B are placed on the floor, and the four space trusses A are arranged to cover the surface of the existing blackboard 40. Then, the joints 12b are fixed to the floor surface, and the four joints 12a at the vertices of the space truss A are fixed to the existing blackboard 40. Bolts such as anchor bolts are usually used to fix the joints 12a and 2b.

[0037] As mentioned above, the existing blackboard 40 is not limited to a flat blackboard, and can be a curved or semi-curved blackboard without any problems, and this system can be installed by stacking it on top of it. In the case of a curved blackboard, etc., the depth of the pyramidal part on the back side can be adjusted to fit the curved surface (by using framework members 13 of different lengths, etc.).

[0038] The display 3 is equipped with a computer function, and the contents written or projected on the display 3 can be enlarged and projected directly onto the writing board 1 via the projector 2. In addition, the writing board 1 is provided with multiple sensors (not shown) on the periphery to detect the movement of markers or fingertips so that the contents written on the board can be captured on the display 3. These sensors can be infrared blocking sensors, the same as those commonly used in electronic whiteboards. The output signal from the sensor corresponding to the contents written on the board is captured by the display 3 and displayed as is on the display 3, and is also converted into digital data and saved. The saved data can be shared and effectively used by teachers and students.

[0039] Although not shown in the figure, the realization of the GIGA School Initiative also includes a teacher's terminal used by the teacher and a student terminal provided for each student. Typically, the teacher's terminal is a tablet or smartphone, and the student's terminal is a tablet. The teacher's terminal and the student's terminal are connected to the display 3 via Wi-Fi, and are set up to enable mutual communication between the display 3 and each terminal.

[0040] A widescreen projector capable of projecting two screens is used as the projector 2. The projector 2 is fixed to the above-mentioned projector installation plate 14, and is arranged so that it is located in the center of the upper side of the writing board 1. The projector 2 is capable of mirroring projection of the screen of the display 3. In other words, it is possible to share the screen by enlarging and projecting the content screen stored in the display 3 (or the teacher's terminal, etc.) directly onto the writing board 1 via the projector 2.

[0041] Typically, the display 3 is equipped with template software, and a wide variety of templates are provided, including grids, musical staves, keyboards, and soccer courts. The teacher can select a desired template, project it large on the writing board 1 via the projector 2, and write on it with a marker or fingertip. The movement of the marker or fingertip on the writing board 1 is then detected, and the writing is captured by the display 3, converted into digital data, and saved. The above templates can also be used by projecting them onto the writing board 1 by moving the projector 2 or by moving the writing board 1 so that it overlaps with the writing board 1.

[0042] When the electronic whiteboard system according to the present invention is implemented in an educational setting, a teacher can operate the teacher's terminal at hand (one-handed operation is possible) at a position away from the writing board 1, and the content screen selected and displayed on the teacher's terminal can be displayed on the display 3, and further enlarged and mirrored onto the writing board 1 via the projector 2. Nowadays, many people, regardless of age or gender, are accustomed to operating smartphones, so operating the teacher's terminal, which is usually a smartphone, is not difficult at all.

[0043] Projector 2's functions allow you to slide the projection position to the left, center, or right depending on the lesson content, or to project two screens on the left and right, making lessons run extremely smoothly. For example, you can project an e-textbook screen on the left and thumbnails of students' answers on the right, and by comparing the two, you can confirm various thoughts, which is expected to encourage new realizations and lead to the creation of new ideas.

[0044] Traditionally, expensive electronic pens have been used to write on electronic whiteboards (including those that use projectors to create electronic whiteboards). These electronic pens are designed to operate Windows PCs on the screen, but under the GIGA School Project, various OS terminals are being provided, and the rate of deployment of Windows PCs has been declining significantly.

[0045] For teachers who are used to writing on the board with chalk, writing with an electronic pen is stressful. Also, while there are no problems with electronic pens on smooth writing surfaces such as whiteboards, there are problems with rough writing surfaces such as blackboards, in which writing is difficult and the pen wears out quickly. Furthermore, there are also problems with malfunctions such as dead batteries and other breakdowns, which can interrupt lessons and break students' concentration.

[0046] However, in the case of the electronic whiteboard system according to the present invention, the teacher can write on the writing board 1 using a marker or his / her fingertip, which has the advantage of eliminating the stress of using an electronic pen and eliminating interruptions to lessons due to malfunctions of the electronic pen. Furthermore, since teachers can write on the writing board 1 using chalk and erase using a blackboard eraser in the same way that they have been accustomed to in the past, it becomes possible to use the electronic whiteboard system according to the present invention with less stress.

[0047] The second invention is based on the premise that an existing blackboard 40 is used as is. The first embodiment is characterized in that a display 3, which is an electronic blackboard, is installed on one side (Fig. 9(A), Fig. 10(A)) or both sides (Fig. 9(B), Fig. 10(B)) of an existing blackboard 40 fixed to a wall surface, and the display 3 is made movable onto one half of the existing blackboard 40. The existing blackboard 40 shown in Fig. 9 is a flat blackboard, a curved blackboard, a semi-curved blackboard, etc., and the existing blackboard 40 shown in Fig. 10 is a lift-down type blackboard.

[0048] In this case, the display 3 may be installed via a support frame composed of the space truss A and space truss B equipped with a swing mechanism at the end of the truss structure frame 11, but it may also be installed simply on the wall surface beside the existing blackboard 40 via the swing mechanism of the truss type frame 11. That is, the base frame 21 constituting the swing mechanism is fixed to the wall surface, the swivel frame 22 and the display fixing frame 23 are assembled thereto, and the display 3 is installed in the display fixing frame 23. In this case as well, the back surface of the display 3 is fixed to the display fixing frame 23, so that it can swing relative to the swivel frame 22 via the support shaft 24, and can also be rotated following the rotation of the swivel frame 22.

[0049] To enable the swivel frame 22 to swivel, it is necessary to position the swivel frame 22 forward of the vertical frame of the existing blackboard 40. The vertical frame width of a typical flat blackboard is about 60 mm, but in the case of curved blackboards, semi-curved blackboards, or retractable blackboards, it may exceed 200 mm, so the base frame 21 must be positioned forward by that amount. For this reason, the base frame 21 is fixed to the wall surface via a gap adjustment material.

[0050] In the first embodiment, the display 3 can be rotated and moved above one half of the existing blackboard 40 while facing forward, by a swing mechanism provided on the support frame. In addition, by placing the projector 2 above the existing blackboard 40, the existing blackboard 40 can be turned into an interactive board, and similar to the first invention, the GIGA School Concept can be realized.

[0051] The electronic whiteboard system of the second embodiment is characterized in that one or two displays 3, which are electronic whiteboards, are installed below an existing whiteboard 40 that is fixed to a wall surface, and one or both of the displays 3 are movable above one half of the existing whiteboard 40 (see FIG. 11). This second embodiment corresponds to a case where there is furniture or the like on both sides of the existing whiteboard 40 and there is no space to install the displays 3, and in this case the displays 3 are installed on the lower waist wall portion of the existing whiteboard 40 so as to be movable up and down.

[0052] To make the display 3 movable up and down, the swing mechanism is rotated 90 degrees before installation. In this case, as in the first embodiment, the base frame 21 is fixed to the waist wall via a space adjustment material. If necessary, gas springs (gas dampers) and stoppers are provided to assist in lifting and lowering and to hold the raised position.

[0053] It is also possible to leave the existing blackboard 40 as is and install the display 3 on the wall beside it, without making it rotatable as described above. For this fixed installation, the space truss A or a combination of the space truss A and the space truss B can be used. [Industrial Applicability]

[0054] As described above, the present invention allows a system for aiming at a GIGA School to be built in a very short time of around 30 minutes at relatively low cost, enables lessons based on blackboard writing, a teaching method that is familiar to both children / students and teachers, and has the advantage of making it possible to save the contents of the blackboard writing as digital data.Furthermore, it makes it possible to realize the GIGA School concept without the stress of using an electronic pen for teachers, and since it has great economic benefits, it has great industrial applicability. [Explanation of symbols]

[0055] 1 Writing board 2. Projector 3. Electronic whiteboard 11 Truss structural frame A,B Space truss 12 Joint 13 Frame materials 21 Base Frame 22 Swivel frame 23 Mounting frame 24 Spindle

Claims

1. An electronic whiteboard system characterized by the arrangement of an electronic whiteboard display and a writing board capable of displaying two screens using a projector.

2. 2. The electronic whiteboard system of claim 1, wherein the display is disposed to one side of the writing board and is movable over one half of the writing board.

3. 2. The electronic whiteboard system according to claim 1, wherein the displays are disposed on both sides of the writing board and are movable over one half of the writing board, respectively.

4. 2. The electronic whiteboard system according to claim 1, wherein the writing board has a writing / erasing function and a screen function.

5. The electronic whiteboard system according to claim 1 , wherein the display and the writing board are attached to a single fixing frame.

6. 6. The electronic whiteboard system according to claim 5, wherein the fixing frame is a truss structure frame formed by connecting a plurality of framework members to joints having a number of bolt holes on a peripheral surface.

7. The electronic whiteboard system of claim 6, wherein the truss structure frame has a plurality of square-shaped portions connected together on a front surface, a quadrangular pyramid-shaped portion formed on the rear surface side of the square-shaped portions, and triangular pyramid-shaped legs connected together on the lower surface of the square-shaped portions at both ends.

8. 6. The electronic whiteboard system according to claim 5, wherein a projector mounting board is disposed on the frame so as to protrude upward.

9. 7. The electronic whiteboard system according to claim 6, wherein the display can be swivelled and moved onto the writing board while facing forward by a swing mechanism provided on the truss structure frame.

10. The electronic whiteboard system described in claim 9, wherein the swing mechanism comprises a base frame fixed to the truss structure frame, a rotating frame supported on the base frame so as to be freely rotatable, and a display fixing frame supported on an end of the rotating frame via a support shaft, and the back surface of the display is fixed to the display fixing frame.

11. An electronic whiteboard system comprising an electronic whiteboard display movably installed on one or both sides of an existing whiteboard fixed to a wall surface, above one half of the existing whiteboard.

12. The electronic whiteboard system described in claim 11, wherein the display can be swiveled and moved above one half of the existing whiteboard while facing forward by a swing mechanism consisting of a base frame fixed to the wall surface, a swivel frame supported on the base frame so as to be freely rotatable, and a display fixing frame supported on an end of the swivel frame via a support shaft.

13. The electronic whiteboard system according to claim 11, wherein the existing blackboard includes a curved or semi-curved blackboard, a lift-up blackboard, and a pull-out blackboard.

14. This electronic whiteboard system is characterized in that one or two displays which are electronic whiteboards are installed on the lower wall below an existing whiteboard which is fixed to the wall surface, and one or both of the displays are movable above one half of the existing whiteboard.

15. The electronic whiteboard system described in claim 14, wherein the display can be swiveled and moved above one half of the existing whiteboard while facing forward by a swing mechanism consisting of a base frame fixed to the waist wall, a swivel frame supported by the base frame so as to be freely rotatable, and a display fixing frame supported by an axis at the end of the swivel frame.

16. In an electronic whiteboard system in which a display and a writing board are arranged side by side so that the electronic whiteboard can be moved over the writing board, a swing mechanism for moving the electronic whiteboard over the writing board comprises: An electronic whiteboard swing mechanism comprising a base frame, a rotating frame rotatably supported on the base frame, and a display fixing frame supported on an end of the rotating frame via a support shaft.

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