JPH0664389A - Electronic blackboard - Google Patents

Abstract

PURPOSE:To provide a mechanism for enhancing a screen erasing effect of a character lithograph, etc., written on a screen sheet of an electronic blackboard. CONSTITUTION:An eraser 3 moving in a direction C in contact with a screen sheet 1 of an electronic blackboard while rotating and an eraser driver 8 for driving the eraser 3 in a direction perpendicular to the moving direction of the sheet are provided on the sheet 1 to improve an erasing effect of a screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic blackboard, and more particularly to an electronic blackboard having an erasing mechanism with a high erasing effect for characters, drawings, etc. written on the electronic blackboard.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional electronic blackboard has a pair of rotating rollers 7 which rotate about central axes 2A and 2B.
Screen paper 1 wrapped between A and 7B and each rotating roller
And an eraser 3A such as a brush that presses the surface of the screen paper when receiving an erasing signal, and a roller drive unit 6 that rotates a rotating roller. When the screen erase button 4 is pressed, the eraser 3 comes into contact with the surface of the moving screen paper 1 and the characters and the like are erased.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
When erasing, the eraser merely slidably contacts the surface of the screen paper and is in contact with the surface of the screen paper. Therefore, there is a drawback that the erasing of characters and the like is insufficient.

[0004]

An electronic blackboard according to the present invention includes a screen paper wound between a pair of rotating rollers, an eraser that slides while rotating the surface of the screen paper, and a roller that rotates the rotating roller. A drive unit and an eraser drive unit that presses the eraser against the screen paper, rotates the eraser, and moves the eraser in a direction orthogonal to the moving direction of the screen paper.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a main part of an electronic blackboard according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of this embodiment. First, in FIG. 2, 1 is a screen paper, 2A and 2B are central axes, 3 is an eraser, 4 is a screen erasing button, 5 is a screen moving button, 6 is a roller driving unit, 7A and 7B are rotating rollers, and 8 is an eraser. It is a drive unit.

Next, as shown in FIG. 1, the operation of the electronic blackboard of this embodiment is as follows: a pair of rotating rollers 7A, 7B, a screen paper 1 wound between the rotating rollers 7A, 7B, and a screen paper 1.
It has an eraser 3 for scraping off the characters written on it. The rotary shafts 7A and 7B are penetrated by central shafts 2A and 2B for mounting inside the electronic blackboard casing.
The screen paper 1 wound between the rotating rollers 7A and 7B is
The rotary rollers 7A and 7B rotate to move in the direction of arrow A. The eraser 3 is attached to the rotary roller 7B side. A certain gap is provided between the contact surface of the eraser 3 and the surface of the screen paper 1. The eraser drive unit 8 includes the eraser 3
Is rotated as indicated by arrow D and pressed against the surface of screen paper 1 as indicated by arrow B, and the eraser 3 is moved in a direction (arrow C) orthogonal to the moving direction of screen paper 1.

When the screen erase button 4 is pressed, the eraser drive unit 8 is activated, the eraser 3 rotates and contacts the surface of the screen paper 1, and the eraser 3 moves in the direction of arrow C.
On the other hand, the roller driving unit 6 operates, the rotating roller 7A rotates, and the screen paper 1 moves in the direction of arrow A. On the other hand, when the screen movement button 5 is pressed, the eraser 3 does not move and only the roller driving unit 6 operates.

[0008]

As described above, the present invention is provided with the eraser drive unit 8 which rotates the eraser 3 and presses it against the screen paper 1 to move the eraser in the direction orthogonal to the moving direction of the screen paper. Therefore, there is an effect that the erasing effect can be further enhanced as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of the present invention.

FIG. 2 is an overall configuration diagram of the present embodiment.

FIG. 3 is a configuration diagram of a conventional electronic blackboard.

[Explanation of symbols]

 1 screen paper 2A, 2B center axis 3, 3A eraser 4 screen erase button 5 screen move button 6 roller drive unit 7A, 7B rotary roller 8 eraser drive unit

Claims (1)

[Claims] 1. A screen paper wound between a pair of rotary rollers, an eraser that slides while rotating the surface of the screen paper, a roller driving unit that rotates the rotary roller, and the eraser. And an eraser drive unit that presses the eraser to rotate the eraser and moves the eraser in a direction orthogonal to the moving direction of the screen paper.