JPS6323193Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sheet winding type writing board device.

Writing boards such as stone tablets, blackboards, and whiteboards generally allow for writing and erasing at will, and are used for temporary records and markings using this function. When the same characters or figures are used repeatedly, the repeatedly used characters or figures are permanently depicted using paint that cannot be erased.

For example, if you write five lines in enamel on a blackboard for music education, or write ruled lines and some letters in magic ink on a whiteboard for schedule planning, these writing boards cannot be used for a single purpose. Although it is extremely convenient, it is extremely difficult to use it for other purposes.

The present invention was created in view of the above circumstances, and allows one writing board device to be used for many different purposes, such as music education, geography education, business planning, and messages. In addition, characters, symbols, diagrams, etc. that have been temporarily written on a permanently drawn figure, etc. can be temporarily removed without erasing them, and then reprinted on a permanent figure, etc. An object of the present invention is to provide a sheet winding type writing board device that can be taken out.

In order to achieve the above object, the present invention includes a pair of winding shafts, winds both ends of a long roll sheet onto the pair of winding shafts, and stretches the central part in a flat shape. , a sheet winding type writing board device which is provided with a backboard for supporting writing pressure behind it, in which the above-mentioned writing roll sheet is made of a transparent material, and a long roll is provided separately from the above-mentioned writing roll sheet. A long roll sheet is provided with a sheet and a pair of winding shafts, and figures, characters, symbols, or ruled lines are drawn on this separately formed long roll sheet, and the roll sheet on which these figures, etc. are written is used for the above-mentioned writing method. It is characterized in that it is interposed between a transparent roll sheet and a backboard, and that both ends of the roll sheet on which the above-mentioned figures, etc. are drawn are respectively wound around a winding shaft and moved in the longitudinal direction. do.

FIG. 1 is a front view of a conventional sheet winding type writing board device, and FIG. 2 is a sectional plan view thereof.

1 is a long roll sheet, which is generally made of a soft synthetic resin such as a polypropylene sheet or a polyester sheet, and is usually white and opaque so that characters written with a marker pen can be clearly seen. Reference numerals 2 and 3 each indicate a winding shaft, which winds both ends of the roll sheet 1 and stretches the central part thereof into a flat shape. 4 is a backboard provided behind the roll sheet to support the pressure of the writing. 5 and 5 are motors for rotationally driving the winding shafts 2 and 3, 5a is a switch for the motor, and 6 is a speed reducer.

FIG. 3 is a front view of an embodiment in which the present invention is applied to the above-mentioned conventional sheet winding type writing board device, and FIG. 4 is a sectional plan view of the same.
Components with the same drawing reference numbers as those in the figures and FIG. 2 are the same or similar components as in the prior art.

7 is a member corresponding to the roll sheet 1 in the conventional device, but a sheet of transparent soft synthetic resin (polyester in this example) is used, and both ends of the sheet are wound around the winding shafts 2 and 3, respectively. There is.

A long roll sheet 8 is formed separately from the above, and is interposed between the transparent sheet 7 and the backboard 4, and winding shafts 9 and 10 are used to wind both ends of the roll sheet 8. is constructed and installed in parallel with the winding shafts 2 and 3 described above. 11 is a motor for driving the winding shafts 9 and 10, and 12 is a speed reducer. 11a is a switch for the motor 11.

On the above-mentioned roll sheet 8, permanent figures, characters, symbols, or ruled lines necessary for education, meetings, etc. are drawn. In FIG. 3, the area where five lines for music are drawn appears. This roll sheet 8 is covered with a transparent sheet 7, but the figures drawn on the roll sheet 8 can be easily seen through the transparent sheet 7.

FIG. 5 shows the rolled sheet 8 and transparent sheet 7 partially unfolded. As shown in this example, there are five lines for music, squares for Japanese language education, ruled lines for English calligraphy, circles and radial lines for circular graphs, grids, etc., which are permanent materials necessary for various types of education, meetings, corporate business, etc. Write down various shapes, characters, symbols, etc. on roll sheet 8. In this case, it is convenient to provide a blank space as in section A shown in the figure, as this allows free entry as will be described later.

The roll sheet 8 can be arbitrarily selected from any flexible and durable sheet-like material, and may be synthetic resin, strong paper, or processed cloth. The paint used to draw figures etc. is selected and used depending on the type of sheet material.

FIG. 6 shows an embodiment different from the above. In this example, a blank map of the prefectures is drawn on the roll sheet 8. These roll sheets are made replaceable by having a structure that allows them to be easily attached to and detached from the writing board device.

(See Fig. 3) The sheet winding type writing board device configured as described above allows the figures etc. written on the roll sheet 8 to be directly viewed, and the transparent sheet 7 covering the top of the drawings can be directly viewed. You can freely write characters on it using a marker pen or the like. Furthermore, you can freely write on the blank area A like a normal whiteboard. and,
When the switch 5a is operated to rotate the take-up shafts 2 and 3, the transparent sheet 7 is fed in the longitudinal direction, and a new unwritten surface appears, allowing free writing again, and then the switch 5a is operated. Take-up shaft 2,
By reversing 3, it is also possible to make the surface written on the transparent sheet with a marker pen etc. appear again.
Of course, written items that are no longer needed can be erased with an eraser.

Also, by operating the switch 11a, the winding shafts 9, 1
By rotating 0, a desired figure drawn on the roll sheet 8 can be drawn out to the front of the writing board device. In this embodiment, switch 1
It is configured so that the rolled sheet 8 and transparent sheet 7 can be fed simultaneously by operating 1b.

In this way, the permanent figures drawn on the roll sheet 8 and the temporary characters written on the transparent sheet 7 are made to appear in front of the writing board freely and selectively, and the two are arbitrarily overlapped. Since they can be displayed together, one writing board device can be used for multiple purposes and in multiple ways. For example, the fifth
The writing board device incorporating the roll sheet shown in the figure can be conveniently used for various subjects such as music, Japanese, English calligraphy and statistics. I reproduced the items I had written on the board one by one and commented on them, and
It is also possible to take out and show model answers that the teacher has written in advance.

Furthermore, if the backboard (reference number 4 in FIG. 4) is made of a ferromagnetic material, a magnetic signal (not shown) can be magnetically attracted onto the transparent sheet 7 for use in combination.

As explained above, the present invention includes a pair of winding shafts, winds both ends of a long roll sheet onto the pair of winding shafts, and stretches the central part in a flat manner. In a sheet winding type writing board device which is provided with a backboard for supporting writing pressure at the back, the above-mentioned writing roll sheet is made of a transparent material, and a long roll sheet and a long roll sheet are separately provided. Figures, characters, symbols, or ruled lines are drawn on a long roll sheet that is equipped with a pair of winding shafts and is formed separately, and the roll sheet on which these figures are written is placed on the transparent writing sheet described above. interposed between the roll sheet and the backboard, and
By winding both ends of the roll sheet on which the above-mentioned figures are drawn, respectively, around the winding shaft and moving it in the longitudinal direction, one writing board device can be used for many different purposes. On top of that,
It is possible to temporarily remove characters, symbols, line drawings, etc. that have been temporarily written on a permanently drawn figure, etc. without erasing them, and make them appear again on a permanent figure, etc. An excellent practical effect can be obtained.

[Brief explanation of the drawing]

FIGS. 1 and 2 show a sheet winding type writing board that has been generally used in the past, with FIG. 1 being a front view and FIG. 2 being a cross-sectional plan view. 3 and 4 show an embodiment of the sheet winding type writing board device according to the present invention, with FIG. 3 being a front view and FIG. 4 being a sectional plan view. Fig. 5 is a partially developed perspective view of the rolled sheet and transparent sheet in the above embodiment, and Fig. 6 is a partially developed perspective view of the rolled sheet and transparent sheet in an embodiment different from the above. It is. 1... Roll sheet, 2, 3... Winding shaft, 4...
...Backboard, 5...Motor, 5a...Switch, 6...Reducer, 7...Transparent sheet, 8...
Roll sheet, 9, 10... Winding shaft, 11... Motor, 11a, 11b... Switch, 12...
Decelerator.

Claims (1)

[Scope of utility model registration request] It is equipped with a pair of winding shafts, and both ends of a long writing roll sheet are wound around the pair of winding shafts, and the central part thereof is stretched in a flat shape, and the writing pressure is supported behind the winding shaft. In a sheet winding type writing board device provided with a backboard, the writing roll sheet is formed of a transparent material, and a long roll sheet and a pair of winding shafts are provided separately from the above. , drawing figures, characters, symbols, or ruled lines on this separately formed long roll sheet,
A roll sheet on which this figure, etc. is drawn is interposed between the transparent roll sheet for writing and a backboard, and both ends of the roll sheet on which the above figure, etc. are drawn are placed on the separate body. The transparent sheet for writing and the roll sheet on which the above-mentioned figures, etc. are written can be freely and selectively wound and fed by winding them around a pair of formed winding shafts. Sheet winding type writing board device.