JPH0516590A - Electronic blackboard device - Google Patents

Abstract

PURPOSE:To provide an electronic blackboard device which is foldable and yet is not much affected by a step difference at the divided part for folding. CONSTITUTION:A holding plate for a drawing sheet 3 is divided into two parts 4a, 4b, and the holding plates 4a, 4b are connected by hinge members 5, 6 to make the holding plates foldable, and an auxiliary sheet 4c is adhered on the holding plates 4a, 4b. By this method, the divided part of the holding plates 4a, 4b is covered by the auxiliary sheet 4c, and even if there is a step difference at the divided part, there is no inconvenience when characters or picture are drawn on the drawing sheet 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic blackboard device used for educational purposes, meetings, etc.

[0002]

2. Description of the Related Art In recent years, an electronic blackboard device capable of copying the contents written on a blackboard on a paper has been highly evaluated for its utility value such as memo writing and minutes preparation.

In the conventional electronic blackboard device, the main body of the blackboard becomes large in order to obtain a sufficient writing surface, and a great deal of labor is required during transportation and storage. In order to solve this problem, a folding electronic blackboard device is proposed in Japanese Utility Model Laid-Open No. 62-150193.

In the electronic blackboard device, the outer case (frame) of the blackboard and the plate surface for holding the drawing sheet are divided, and the outer case is connected by a hinge, so that the outer case is transported and housed in the electronic blackboard device. The drawing sheet and board surface can be removed from the board, the board surface can be divided, and the outer case can be folded to make it compact. Further, when the apparatus is used, an auxiliary sheet is provided so as to alleviate a step at the joint portion of the plate surfaces, so that the writing is not disturbed.

[0005]

However, in the above-mentioned conventional electronic blackboard device, a great deal of labor is required for the assembly work at the time of installation and the work at the time of storage. In particular, if the auxiliary sheet is adhered to the drawing sheet, the drawing sheet cannot be replaced, and if the detachable fastener tape or the like as shown in US Pat. There is a big problem that a step is formed on the surface and it becomes difficult to write characters and pictures on the drawing sheet.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a means for transferring a writing sheet, a plurality of exterior cases in which at least a part of the sheets is exposed, and an exterior case. A holding plate that holds the back surface of the sheet inside, an auxiliary sheet mounted between the sheets between the holding plates, an image sensor that receives the reflected light from the front surface of the sheet and reads optical information, and an image sensor And a recording unit for recording on a recording medium according to the output of 1., and the outer case is joined by a hinge so that the drawing surface of the sheet can be bent.

[0007]

According to the present invention, since the auxiliary sheet covers the divided portion of the foldable electronic blackboard main body with the above-mentioned structure, the stepped portion of the divided portion can be reduced.

[0008]

1 is a front view of an electronic blackboard device according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA 'of FIG.
Reference numeral b is a blackboard body case lid, 2a and 2b are blackboard body cases (hereinafter, the blackboard body cases 2a and 2b are generically referred to as a blackboard body), and 3 is a drawing sheet. Blackboard case 2
b is thinner than the blackboard main body case 2a, and a detachable holding member 2g is attached. Reference numerals 4a and 4b denote holding plates for holding the back surface of the drawing surface of the drawing sheet 3, which are fixed to the blackboard body cases 2a and 2b, respectively. Reference numerals 5 and 6 denote hinge members that connect the blackboard main body cases 2a and 2b, and the metal fittings 2c attached to the blackboard main body cases 2a and 2b, respectively.
-Fixed to 2e and 2d-2f. Reference numeral 4c is an auxiliary sheet for relaxing the step at the joint between the holding plates 4a and 4b. As shown in FIG. 12, the auxiliary sheet 4c is provided on the holding plates 4a and 4b where the drawing sheet 3 is exposed from the blackboard body. The corresponding portions are included and only the shaded portions other than the vicinity of the joint are bonded. Reference numeral 7a is a conveyance roller that conveys the drawing sheet 3 in the direction of arrow B, and reference numeral 7b is an auxiliary roller that follows the conveyance roller 7a when the drawing sheet 3 is conveyed. Reference numeral 8 is a light source, 9 is a reflecting mirror, 10 is a condenser lens, 11 is a charge coupled device (hereinafter referred to as CCD) image sensor, and these are mounted in the blackboard body case 2a. Reference numeral 12 is a control unit that can be attached to and detached from the blackboard main body, 13 is an operation panel, and 14 is a paper discharge port through which recording paper after copying is discharged.

FIG. 3 is a functional block diagram of a recording unit (not shown) inside the control unit 12. Reference numeral 15 is a binarization for converting an analog electric signal sent from the CCD image sensor 11 into a binary signal. Reference numeral 16 denotes a copying unit that prints and records on a recording sheet according to a binary signal sent from the binarizing unit 15.

The operation of the electronic blackboard device of this embodiment constructed as described above will be described below.

The drawing sheet 3 on which characters and figures are written is
It is transported in the direction of arrow B by the transport roller 7a. At this time, the light source 8 irradiates the irradiation portion 8a on the drawing sheet 3,
The reflected light is reflected by the reflecting mirror 9 and focused on the CCD image sensor 11 by the condenser lens 10. The imaged optical signal is converted into an electric signal by the CCD image sensor 11, binarized by the binarizing unit 15, and copied by a copying unit 16 on a recording sheet according to the binary signal. The paper is discharged from the paper discharge port 14.

When transporting or storing the electronic blackboard device,
First, the blackboard body case lids 1a and 1b and the control unit 12 are removed from the blackboard body cases 2a and 2b. Next, the blackboard body is folded by the hinge members 5 and 6 so that the drawing surfaces of the drawing sheet 3 face each other. The operation of folding the blackboard body will be described below with reference to FIGS. 4, 5, 6, and 7.

FIG. 4 is an enlarged view of the mounting portion of the hinge member 6 of FIG. 2, FIG. 5 is a sectional view taken along the line AA ′ of FIG. 1 in the middle of folding the blackboard body, and FIG. 6 is a state in which the blackboard body is folded. FIG. 7 is a perspective view of the blackboard main body during folding.

As shown in FIG. 5, the blackboard main body is folded by the hinge members 5 and 6 so that the blackboard main body covers 2a and 2b rotate in the directions of arrows C and D, respectively.
At this time, as shown in FIG. 4, the center of rotation of the hinge members 5 and 6 is displaced from the holding plates 4a and 4b, that is, from the surface of the drawing sheet 3 in the folding direction of the blackboard body. In addition, when the folding of the blackboard body is completed, the holding plates 4a and 4b do not contact each other as shown in FIG.
Further, as shown in FIG. 7, if the holding bars 17a and 17b are attached to the blackboard main bodies 2a and 2b, the drawing sheet 3 can be prevented from falling off.

Hereinafter, regarding the holding rods 17a and 17b,
This will be described with reference to FIG. FIG. 8 is an enlarged view of a portion where the holding bar 17a is attached to the blackboard body case 2a. Holding rod 1
Protrusions 17a-a and 17a-b are provided at the end of 7a, and these are screwed into mounting holes 2a-a provided on the front surface of the blackboard body case 2a. Holding rod 17a
And 17b and the corresponding portions of the blackboard body cases 2a and 2b are provided with similar protrusions and mounting holes. On the blackboard body case 12a,
The holding bars 17b are attached to the blackboard body case 12b, respectively.

Further, by attaching mounting holes (not shown) on the upper and lower surfaces of the blackboard main body cases 2a and 2b, and when the blackboard is used, the holding rods 17a and 17b may be attached to the holding rods 17a and 17b. It is possible to obtain a stable installation state without any trouble in the storage place, and in addition, the holding rods 17a and 17b serve to fix the rotation of the blackboard body by the hinge.

With respect to the holding rod, a second embodiment different from the one described above will be described with reference to FIG.

In this embodiment, the holding rod used is slightly shorter than half the height of the blackboard body, and one end of the holding rod is screwed to the blackboard body case as shown in FIG. This makes it possible to prevent the drawing sheet from falling off when the blackboard is folded, and when using the blackboard, loosen the screws to rotate the holding bars in the directions of the arrows shown in FIG. Then, if the holding rod is retracted from the writing surface and fixed again with the screw, it does not interfere with the writing.

As described above, in this embodiment, the divided blackboard main body cases are joined by the hinges so that the blackboard main body can be folded together with the drawing sheet, and at the time of folding, a holding rod for preventing the drawing sheet from falling off. Since the board is detachably mounted on the blackboard body, the electronic blackboard can be made compact when being transported and stored. Further, when the electronic blackboard is installed, the holding rod can be removed to be attached to the electronic blackboard device, and the rotation of the hinge that connects the divided blackboard main body cases is fixed, so that stable installation can be performed.

Further, in the second embodiment relating to the holding rod,
When transporting with the electronic blackboard folded and installing it,
Since the holding bar can be removed from the drawing surface without removing it one by one, installation work becomes easy.

Further, since the auxiliary sheet is provided between the holding plate and the drawing sheet by adhering only the portion other than the joining portion of the holding plate, the difficulty of writing at the time of writing can be alleviated and the auxiliary sheet can be used. It can be folded while it is attached, making it easy to assemble and store.

[0022]

According to the present invention, since a plurality of divided cases are joined together via a hinge so that the drawing surface of the writing sheet is folded inside, the writing sheet can be protected when it is folded, and the writing sheet can be protected. Since it is equipped with an auxiliary sheet that alleviates the step between the joints of the holding plates that hold the back surface of the sheet,
(EN) An excellent electronic blackboard device that alleviates the difficulty of writing caused by folding an electronic blackboard.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment of an electronic blackboard device of the present invention.

[Figure 2] Same cross section

FIG. 3 is a block diagram of the same circuit.

FIG. 4 is an enlarged view of the same main part.

[Figure 5] Same flat section

FIG. 6 is a sectional view of the same plane

FIG. 7 is a perspective view of the same.

FIG. 8 is an enlarged perspective view of the relevant part.

FIG. 9 is a front view of the same.

FIG. 10 is a front view of a second embodiment of the electronic blackboard device of the present invention.

FIG. 11 is an enlarged perspective view of the same main part.

FIG. 12 is a plan view of the same main part.

[Explanation of symbols]

1a Blackboard case cover 1b Blackboard case cover 2a Blackboard body case 2b Blackboard case 3 drawing sheet 4a holding plate 4b holding plate 5 Hinge member 6 Hinge member

Claims (3)

[Claims] 1. A writing sheet, a means for transporting the writing sheet, an outer case divided into a plurality of parts for exposing at least a part of the writing sheet, and a back surface of the writing sheet divided into a plurality of parts. A holding plate, an auxiliary sheet mounted on the holding plate between the writing sheet and the holding plate, a light source for irradiating the surface of the writing sheet in the outer case with light, and from the surface of the writing sheet. The writing sheet has an image sensor that receives reflected light and reads optical information, and a recording unit that records on a recording medium according to the output from the image sensor, and the writing sheet flexibly bends the exterior case with the drawing surface inside. An electronic blackboard device that is connected by a hinge. 2. The auxiliary sheet is attached to the holding plate in a region including a region on the holding plate corresponding to a portion where the writing sheet is exposed from the outer case. Electronic blackboard device. 3. The electronic blackboard device according to claim 1, wherein the auxiliary sheet is bonded to the holding plate at a portion apart from the holding plate dividing portion.