JPH0248385U

JPH0248385U -

Info

Publication number: JPH0248385U
Application number: JP12741288U
Authority: JP
Priority date: 1988-09-30
Filing date: 1988-09-30
Publication date: 1990-04-04
Anticipated expiration: 2003-09-30
Also published as: JP2519289Y2

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例を示す正面図、
第２図は第１図のＣ―Ｃ線断面図、第３図は同実
施例の要部平面図、第４図は第１図のＥ―Ｅ線断
面図、第５図は第１実施例の張設手段を示す斜視
図、第６図ａ，ｂ，ｃは第１実施例の作用を示す
水平断面図、第７図は本考案の第２の実施例を示
す正面図、第８図は第７図のＦ―Ｆ線断面図、第
９図は同実施例の要部平面図、第１０図ａ，ｂ，
ｃ，ｄは第２実施例の作用を示す水平断面図、第
１１図は本考案の第３の実施例を示す水平断面図
、第１２図は第３実施例の作用を示す水平断面図
、第１３図は本考案の第４の実施例を示す水平断
面図、第１４図は第４実施例の作用を示す水平断
面図、第１５図は本考案の第５の実施例を示す平
面図、第１６図は第１５図の―線断面図、第
１７図は、同実施例の要部平面図、第１８図ａ，
ｂ，ｃは第５実施例の作用を示す水平断面図、第
１９図はこの種の電子黒板装置の第１の従来例を
示す斜視図、第２０図は第１９図のＡ―Ａ線断面
図、第２１図はこの種の電子黒板装置の第２の従
来例を示す斜視図、第２２図は第２１図のＢ―Ｂ
線断面図である。３……コーナローラ、４……シート、１２……
板面板、１３……折り畳み線、１４……板面枠、
１５……シートガイド、１６……ガイド板、２１
……バネ、２２……板面板、２３……折り畳み線
、２４……シードガイド板、２５……折り畳み線
、２６……板面枠、２７……折り畳み枠。 FIG. 1 is a front view showing the first embodiment of the present invention;
Figure 2 is a sectional view taken along the line CC in Figure 1, Figure 3 is a plan view of the main parts of the same embodiment, Figure 4 is a sectional view taken along the line E-E in Figure 1, and Figure 5 is the first embodiment. FIGS. 6a, b, and c are horizontal sectional views showing the operation of the first embodiment; FIG. 7 is a front view showing the second embodiment of the present invention; FIG. The figure is a sectional view taken along the line FF in FIG. 7, FIG. 9 is a plan view of the main part of the same embodiment, and FIGS.
c, d are horizontal sectional views showing the action of the second embodiment; FIG. 11 is a horizontal sectional view showing the third embodiment of the present invention; FIG. 12 is a horizontal sectional view showing the action of the third embodiment; Fig. 13 is a horizontal sectional view showing the fourth embodiment of the present invention, Fig. 14 is a horizontal sectional view showing the operation of the fourth embodiment, and Fig. 15 is a plan view showing the fifth embodiment of the invention. , FIG. 16 is a sectional view taken along the line -- in FIG. 15, FIG. 17 is a plan view of the main part of the same embodiment, and FIGS.
b, c are horizontal cross-sectional views showing the operation of the fifth embodiment, FIG. 19 is a perspective view showing the first conventional example of this type of electronic blackboard device, and FIG. 20 is a cross-sectional view taken along the line A--A in FIG. 19. 21 is a perspective view showing a second conventional example of this type of electronic whiteboard device, and FIG. 22 is a B-B of FIG. 21.
FIG. 3... Corner roller, 4... Seat, 12...
Board face plate, 13... Folding line, 14... Board face frame,
15...Sheet guide, 16...Guide plate, 21
...Spring, 22... Board face plate, 23... Folding line, 24... Seed guide plate, 25... Folding line, 26... Board face frame, 27... Folding frame.

Claims

[Scope of Claim for Utility Model Registration] A board that forms a writing area, a board frame that holds the board, two corner rollers provided at both ends of the board, and the corner rollers that form a writing area on the board. In an electronic blackboard device that has a stretched sheet and prints by moving the sheet to read and print written characters, figures, etc., a thin part is provided perpendicularly to the board face plate as a bending line, and the bending A board frame is provided to hold each board divided by a line, and sheet guide means is provided on the folding surface to always keep the sheet parallel to the board frame whose angle changes, and the sheet is always stretched. A foldable electronic blackboard characterized by being provided with a tensioning means.