JP2000335188A - Electronic writing board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable easy erasure of an area just inside a window frame and also easy removal of erasure refuse deposited thereon. SOLUTION: This writing board is constituted so that a window frame 27 (27a, 27b) of an exterior case forming a window can be opened and closed. A fluorescent light 14 for reading the written content is made replaceable by opening the side frame 27b of the window frame 27, and it is made possible to fit and remove spare components of a marker pen 50 and the like and also to fit and remove a screen of OHP or a magnetic holder holding components with magnetism, by using a projecting part 48 of a holding plate 45, for instance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a part of a stretched screen sheet is exposed to the outside through a window of an outer case, and a writing tool such as a chalk marker pen is used for the screen sheet exposed to the outside. The present invention relates to an electronic writing board such as an electronic blackboard, a whiteboard, a message board, etc., which writes characters, pictures, etc., reads the written contents as necessary, and copies them to a recording medium, such as paper or an OHP sheet.

[0002]

2. Description of the Related Art Conventionally, in this type of electronic writing board, as shown in FIG.
Then, together with the printer 3 and the like, the writing unit 5 is attached using a plurality of screws 4, and thereafter, the window unit 7 made of resin is attached and fixed around the writing unit 5 using the plurality of screws 6. .

Then, the screen sheet 8 of the writing unit 5 is exposed from the window surrounded by the fixed window frame 7,
When using the screen sheet 8 exposed to the outside, writing is performed using a writing instrument such as a marker pen while erasing the screen sheet 8 using an eraser such as a blackboard eraser. And so on.

[0004]

However, in such a conventional electronic writing board, there is a problem that it is difficult to erase the inside of the window frame 7 with an eraser, and it becomes very difficult to see over time. In addition, eraser dust due to the eraser accumulates immediately inside the window frame 7 and adversely affects the screen sheet feeding, and when the eraser sticks to the screen sheet feed roller, uneven feeding and abnormal noise occur. was there.

[0005] It is an object of the present invention to make it possible to easily erase the area immediately inside the window frame and to easily remove the scum accumulated on the window frame.

[0006]

Accordingly, the present invention provides
A part of the stretched screen sheet is exposed to the outside through the window of the outer case, and writing is performed using a writing instrument on the screen sheet exposed to the outside, and if necessary, the written content is read and recorded on a recording medium. The electronic writing board to be copied is characterized in that a window frame of an exterior case forming a window can be freely opened and closed.

When the window frame is opened, a fluorescent lamp for reading written contents can be exchanged, a spare part such as a marker pen, a projection screen such as an OHP, and a magnetic holder for holding parts using magnetism. It is good to make attachment and detachment possible.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the appearance of an electronic blackboard according to the present invention, and FIG. 2 shows a cross section of the blackboard portion.

Reference numeral 10 in the drawing denotes a stand. An optical reader 12 is mounted on the upper part of the stand 10. The optical reading device 12 includes a fluorescent lamp 14, a mirror 15, a lens 16, a CCD sensor 17, an electric control unit 18, and the like.

On the upper front of such a stand 10,
Also, the writing unit 20 is attached. The writing unit 20 has a screen sheet 25 stretched over one driving roller 21 and three driven rollers 22, 23, 24.

A window frame 27 constituting an exterior case is attached to the front of the stand 10 so as to cover around the writing unit 20, and a window 28 is opened in the front, and a screen stretched from the window 28. The blackboard portion 30 is formed by exposing a part of the sheet 25 to the outside. A back plate 32 is provided on the inside of the screen sheet 25 facing the outside from the window 28.

A receiver 33 is attached to the lower portion of the blackboard portion 30 along the lower edge, and a printer 34 is attached to the lower right of the receiver 33.

Under such a configuration, the illustrated electronic blackboard is used with a writing instrument such as a chalk marker pen when used.
While erasing the written contents using the eraser 35 placed on the screen sheet 3, the writing is performed on the screen sheet 25 facing the outside.

When a copy of the written contents is to be obtained, a switch (not shown) is operated as necessary to rotate the driving roller 21 to feed the screen sheet 25, and the fluorescent sheet 14 is applied to the surface of the screen sheet 25. And the reflected light is condensed by a lens 16 via a mirror 15 and input to a CCD sensor 17, where the light information is converted into electric information and input to an electric control unit 18, and the optical reading device 1
The written contents read in step 2 are copied to the recording medium 36.

According to the present invention, the window frame 27 is composed of, for example, four corner frames 27a and straight side frames 27b therebetween. In the illustrated example, the corner frame 27a
The side frame 27b is formed by extrusion using a resin material.

The corner frame 27a is, as shown in FIG.
It is mounted on the stand 10 using mounting screws 37. On the side frame 27b side of the corner frame 27a, a large protruding shaft portion 38 is provided on the upper side in the back, and on the lower side on the front side,
A small protruding shaft portion 39 is provided.

On the other hand, in the side frame 27b, as shown in FIG. 4, one shaft hole 40 is provided on the upper rear side, and the other shaft hole 41 is provided on the lower front side.

Then, the long side frame 27b is bent and one shaft portion 38 of the corner frame 27a is fitted into one shaft hole 40 of the side frame 27b, and the side frame 27b is inserted between the opposed corner frames 27a. It is supported and can be opened and closed around the shaft 38. When the side frame 27b is closed, the corner frame 27
The other shaft portion 39 of a is fitted in the other shaft hole 41 of the side frame 27b with a click feeling.

The outer surface of the corner frame 27a is provided with a recess 42 so that a finger can be put on the side frame 27b when the side frame 27b is opened.

Since it is difficult to erase the inside of the window frame 27 with the eraser 35 at this time, if it becomes dirty with the passage of time, or if the erased dust due to the eraser 35 accumulates just inside the window frame 27, the corner is removed. Put a finger into the recess 42 of the frame 27a and put a finger on it, open the side frame 27b around the shaft 38, and use the eraser 35 to
5. Wipe the top and use a separate member
5 Clean the top.

In the illustrated example, as shown in FIG. 3, when the left side frame 27b is opened, the fluorescent lamp 14 is exposed and can be easily replaced.

As shown in FIGS. 3 and 4, a hook rib 44 having a hook-shaped cross section is provided on the inner surface of the side frame 27b in the form of a rail, and is slid in the length direction of the side frame 27b. The holding plates 45 are detachably attached to both ends of the side frame 27b.

As shown in FIG. 5, the lower surface of the holding plate 45 is provided with two elastic pieces 46, a locking rib 47 and a projection 48. In the illustrated example, as shown in FIG.
Thus, the spare marker pen 50 is elastically held. And
With the lower surface facing outward, both edges are engaged with the locking ribs 44, and inserted while sliding from the end of the side frame 27b.
Is fitted into the engaging recess 52 of the hook rib 44 and positioned.

When the ink of the marker pen runs out during use, by opening the side frame 27b,
The holding plate 45 is pulled out to take out a spare marker pen 50.

In the illustrated example, a center hole is provided in the projection 48 of the holding plate 45, and as shown in FIG. 6, when the left and right and upper side frames 27b are opened, two left and right and two upper parts are provided. The projection 48 is located.

The center holes of the projections 48 are shown in FIG.
6 is fitted to the tip of the rivet-shaped pin 55 of the resin-made projection curtain 54, and the projection curtain 54 can be attached as shown by a chain line in FIG. Thereby, in the illustrated example, the projection area of the OHP or the like can be increased as necessary.

Further, as shown in FIG. 8, for example, only the upper frame 27b is opened, and the projections 48 of the two holding plates 45 provided on the upper frame 27b are exposed, and the long holes shown in FIG. Riveted pin 57 of metal rod (magnetic holder) 56
And a metal pole 56 can be attached to the illustrated electronic blackboard.

Thus, in the illustrated example, if necessary, as shown in FIG. 9, the magnet 60 is attracted to the metal rod 56 by using magnetism, and the explanation chart 62 and the like are held between the magnets. Make it possible to increase the value of use as a meeting tool.

[0029]

As described above, according to the present invention, it is difficult to erase the area immediately inside the window frame with the eraser. Therefore, if the window frame becomes dirty over time, open the side frame and wipe the screen sheet with the eraser. Eliminate the ugliness and improve the appearance. If eraser dust from the eraser accumulates just inside the window frame, open the side frame and clean the screen sheet so that the screen sheet feed is not adversely affected. It is possible to prevent the occurrence of uneven feeding and abnormal noise due to the adhesion to the roller.

According to the second aspect of the present invention, the fluorescent lamp for reading the written contents can be easily exchanged simply by opening the window frame without removing the screw or the like and removing the window frame.

According to the third aspect of the present invention, when the spare parts such as the marker pen are exhausted, it is only necessary to open the window frame and take out the stored spare parts. Usability can be improved as easy.

According to the fourth aspect of the invention, since the window frame can be opened and the projection curtain can be attached and detached, the projection area of the OHP or the like can be increased as necessary, and the utility value as a conference tool can be enhanced. be able to.

According to the fifth aspect of the present invention, since the window frame is opened and the magnetic holder for holding the parts by using magnetism can be attached and detached, the projection screen and the explanation chart can be used as necessary. It can be attached and its value as a meeting tool can be increased.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an electronic blackboard according to the present invention.

FIG. 2 is a cross-sectional view of the blackboard portion.

FIG. 3 is an enlarged perspective view showing a window frame portion of the window frame portion opened.

FIG. 4 is a partial perspective view showing the window frame closed.

FIG. 5 is a perspective view showing a holder attached to the window frame as viewed from a lower surface side.

FIG. 6 is a front view of the electronic blackboard shown with left, right, and upper side frames opened.

FIG. 7 is a plan view of a projection screen attached to the electronic blackboard.

FIG. 8 is a front view of the electronic blackboard showing only an upper side frame opened.

FIG. 9 is an explanatory diagram showing a state in which an explanatory chart is held between a metal rod attached to the magnet and a magnet.

FIG. 10 is an exploded perspective view of a conventional electronic blackboard.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Stand 12 Optical reading device 14 Fluorescent lamp 20 Writing unit 25 Screen sheet 27 Window frame 27a Corner frame 27b Side frame 28 Window 30 Blackboard portion 35 Eraser 36 Recording medium 45 Holding plate 50 Spare marker pen (writing implement) 54 Projection curtain 56 Metal Rod (magnetic holder) 60 Magnet (magnetic holder)

Claims (5)

[Claims] 1. A part of a stretched screen sheet is exposed to the outside through a window of an outer case, and writing is performed on the screen sheet exposed to the outside using a writing instrument, and the written content is written as necessary. An electronic writing board for reading and copying on a recording medium, wherein a window frame of the exterior case forming the window is openable and closable. 2. The electronic writing board according to claim 1, wherein when the window frame is opened, the fluorescent lamp for reading the written contents can be exchanged. 3. The electronic writing board according to claim 1, wherein when the window frame is opened, spare parts can be attached and detached. 4. The electronic writing board according to claim 1, wherein when the window frame is opened, the projection curtain can be attached and detached. 5. The electronic writing board according to claim 1, wherein when the window frame is opened, a magnetic holder for holding a component using magnetism can be attached and detached.