JPH11180093A - Writing board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the surface new by simply replacing only a stained exterior member without replacing an exterior frame itself by covering the surfaces of the exterior frames by detachably fitting the thin plate-form exterior member having elasticity, on the exterior frames. SOLUTION: A thin plate-form exterior member 15 having elasticity is detachably fitted on an upper frame, right and left side frames 4 and a lower frame 5 which are molded articles of the same resin respectively. Then, respective surfaces of the upper frame, the right and left side frames 4 and the lower frame 5 are covered with the exterior member 15. The exterior member 15 is tightly fitted on respective surfaces of the upper frame, the right and left side frames 4 and the lower frame 5 which are molded articles of the same resin, and has a U-shaped cross section. In addition, on one side rear edge of the exterior member 15, a U-shaped engaging part 15a which is joined and fitted on respective hollow protruding parts 9 of the upper frame, the right and left side frames 4 and the lower frame 5, is formed. Also, on the other side rear edge, an L-shaped engaging part 15b which is engaged with respective protruding parts 10 of the upper frame, the right and left frames 4 and the lower frame 5, is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing board having an outer frame surrounding a writing surface, for example, an electronic blackboard, a blackboard, a whiteboard, a bulletin board, a message board, an OHP.
It can be applied to a projection board for (overhead projector) and the like.

[0002]

2. Description of the Related Art Conventionally, for example, in an electronic blackboard, a dedicated marker pen (ketone-based marker, alcohol-based marker) is used. When writing with the marker pen, the eraser that falls from the writing surface is
For example, in a structure as described in Japanese Utility Model Laid-Open No. 62-167792, the powder is received by a powder receiving tray detachably mounted on the lower frame of the outer frame, but it is unavoidable that the powder is attached to the outer frame. Conventionally, no countermeasures have been taken for the stain.

[0003]

One of the causes of stains on the exterior frame is that an eraser made of a mixture of a pigment and a fixing agent (oil and wax) as a component of the marker pen is formed on the uneven portion of the resin material surface of the exterior frame. In recent years, many designs have made the outer frame white because of the ingress, and dirt has become particularly noticeable.

[0004] Another cause is that a marker pen test report is written on the surface of the exterior frame, or an adhesive tape or the like is repeatedly applied to the exterior frame, and the adhesive or erased dust attached to the adhesive is applied to the exterior frame. This is because it is stuck.

[0005] For a lighting board which is often seen by many people, it is desirable to always keep the exterior frame clean in order to maintain the appearance quality. However, it is practically necessary to disassemble the exterior frame to clean or replace it. Since it is impossible, it was conventionally difficult to clean a heavily soiled exterior frame.

[0006] In addition to the original function of writing on the writing surface (in the case of an electronic blackboard, the function of further printing out), the function of the writing board is such that an OHP film or a special chart is attached with an adhesive tape or the like. In many cases, it is used as a chart holding stand by being fixed to an outer frame, or is used as a magnet adsorbing table to stop a memo paper or the like by attaching a metal plate to the outer frame and adsorbing a magnet.

However, since the exterior frame itself has no means for stopping a sheet of paper or the like, the exterior frame is contaminated as described above using an adhesive tape or the like. Since the texture is different from that of the metal member, the image becomes poor in design, and the cost is increased by separately attaching the metal member.

In addition, extruded resin moldings, which are advantageous in terms of cost and production, are frequently used for the mold material constituting the outer frame. However, the resin material is relatively soft, so that it is easily damaged and the injection molding is difficult. Unlike molding, there was a problem of poor decorativeness.

A first object of the present invention is to cover a surface of an exterior frame with an easily exchangeable exterior member, so that a new surface can be obtained by replacing only a dirty exterior member without replacing the exterior frame itself. Is to do so. The second purpose is
An object of the present invention is to enable a dedicated chart or the like to be supported on an outer frame without using an adhesive tape or the like. A third object is to prevent adhesion of marker ink and the like and to increase the strength of the surface of the outer frame. A fourth object is to enhance the decorative effect on the outer frame surface.

[0010]

SUMMARY OF THE INVENTION The first object of the present invention is achieved by detachably attaching an elastic thin plate-like exterior member to an exterior frame to cover the surface of the exterior frame.

The second object is achieved by forming the exterior member into a U-shaped cross section along the surface shape of the exterior frame.

Further, the third object is achieved by performing a gloss enhancement treatment on the surface of the exterior member.

The fourth object is attained by subjecting the surface of the exterior member to a decoration treatment by design or coloring.

[0014]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an endless sheet 1 serving as a writing surface.
It is an external appearance perspective view of the electronic blackboard using. The endless sheet 1 is transported in an exterior frame including a corner frame 2, an upper frame 3, left and right side frames 4 and a lower frame 5 having the same shape at the four corners. The exterior frame is supported on the front surface of a frame 7 that supports the stand 6. A powder receiving tray 8 is attached to the lower frame 5.

As shown in FIGS. 2 and 3, the corner frame 2
Is extruded as a solid body by a resin material. For the upper frame 3, the left and right side frames 4 and the lower frame 5, a common resin molded product extruded as a hollow body having an L-shaped cross section with a resin material is used.

The corner frame 2 is integrally formed with a joint protrusion 2a having the same shape in a direction perpendicular to the corner frame 2, and each of the joint protrusions 2a is formed.
a is provided with two holes 6 each.

At the rear edge of each of the upper frame 3, the left and right side frames 4, and the lower frame 5, a hollow convex portion 9 which is bent inward while being hollow is integrally formed. A protruding portion 10 that protrudes rearward in a plate shape is formed on the side rear edge.

As shown in FIG. 2, the corner frame 2, the left side frame 4, and the lower frame 5 are connected to the joint projection 2 a of the corner frame 2 by connecting each end of the left side frame 4 and the lower frame 5. The bracket 13 is fitted to the frame plate 12 of the frame 7 with screws 13 using a bracket 11 formed by bending a metal plate into an L shape. The bracket 11 is provided with a hole 14 through which the screw 13 passes. The corner frame 2, the upper frame 3, the left and right side frames 4, and the lower frame 5 are similarly attached at four corners.

As shown in FIGS. 3 and 4, a thin plate-shaped elastic exterior member 15 is detachably attached to each of the upper frame 3, the left and right side frames 4 and the lower frame 5 which are the same resin molded product. The upper frame 3, the left and right side frames 4, and the lower frame 5 are covered with an exterior member 15.

The exterior member 15 has a U-shaped cross section which is tightly fitted to the surfaces of the upper frame 3, the left and right side frames 4 and the lower frame 5 which are the same resin molded product. On the edge, the U-shaped engaging portion 15a which fits tightly into each of the hollow projections 9 of the upper frame 3, the left and right side frames 4 and the lower frame 5, and the frame 3 on the other rear edge. L-shaped engaging portions 15b are formed to engage with the respective projecting portions 10 of the left and right side frames 4 and the lower frame 5.

The exterior member 15 is made of a resin material, such as polycarbonate or polyethylene terephthalate, which can maintain its strength even when it is forcibly bent when it is closely fitted to the surfaces of the upper frame 3, the left and right side frames 4 and the lower frame 5. It is preferable to integrally mold with a thin metal plate, for example, 0.2 to 0.5 m
A stainless plate having a thickness of about m may be used.

Further, even after the exterior member 15 is fitted to the surfaces of the upper frame 3, the left and right side frames 4 and the lower frame 5, the spring force of the exterior member 15 is sufficiently utilized so that the exterior member 15 does not accidentally come off. Thus, as shown in FIG. 4, the front part of the exterior member 15 is curved from the state shown by the dashed line to the state shown by the solid line, and the curvature of the front part of the upper frame 3, the left and right side frames 4, and the lower frame 5 is adjusted. It is only necessary to form the ridge 15c slightly tighter than the curvature or at the center of the rear surface of the front part of the exterior member 15 as shown in FIG.

Further, if the surface of the exterior member 15 is subjected to a gloss enhancement treatment (hard treatment), the adhesion of marker ink or the like is prevented, and if the surface is provided with a pattern, picture, or coloring, the decorative effect is enhanced.

FIG. 6 is an external perspective view in which the exterior member 15 is mounted on each of the upper frame 3 and the left and right side frames 4 of the exterior frame.
The exterior member 15 has a U-shaped cross section having a thin plate-like elasticity and is fitted to the respective surfaces of the upper frame 3 and the left and right side frames 4 which are the same resin molded product. 15 and a special chart, memo paper, or the like can be interposed therebetween. FIG. 6 shows a state in which high-quality paper 16 of A0 size is sandwiched between the upper frame 3 and the exterior member 15.

The exterior member 15 mounted on each of the upper frame 3 and the left and right side frames 4 (or the lower frame 5) has a U-shaped cross section.
In addition to holding and covering (the lower frame 5), the locking portions 15a and 15b on both sides are respectively connected to the hollow protrusions 9 of the upper frame 3 and the left and right side frames 4 (further the lower frame 5). Since it is engaged with the protruding portion 10, it does not come off accidentally, but it can be relatively easily removed using a tool such as a flathead screwdriver.

[0027]

According to the present invention, since the exterior frame surface is covered with a detachable exterior member, the exterior frame surface can be replaced with a new one simply by replacing only the dirty exterior member without replacing the exterior frame itself. it can. In addition, the outer frame, which is a relatively soft resin molded product, can be protected.

According to the second aspect of the present invention, the exterior member has a U-shaped cross section along the surface shape of the exterior frame. It is possible to hold a dedicated chart, memo paper, or the like, and it is not necessary to use an adhesive tape or a magnet.

According to the third aspect of the present invention, since the surface of the exterior member is subjected to the gloss enhancement treatment, adhesion of the marker ink or the like can be prevented, and the glossy appearance quality can be maintained forever.

According to the fourth aspect of the present invention, by applying decoration processing by design or coloring to the surface of the exterior member, it is possible to provide a product having an appearance according to the user's preference.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an example of an electronic blackboard to which the present invention is applied.

FIG. 2 is a partial exploded perspective view showing a state in which members constituting the exterior frame are attached to the frame.

FIG. 3 is a perspective view of a corner frame, an upper frame, and a side frame that constitute the exterior member and the exterior frame.

FIG. 4 is a perspective view of an exterior member having a curved front portion and a side frame.

FIG. 5 is a perspective view of an exterior member having a convex portion formed on a rear surface of a front portion and a side frame.

FIG. 6 is an external perspective view showing a use state of the electronic blackboard to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Endless seat 2 Corner frame 3 Upper frame 4 Left and right side frames 5 Lower frame 15 Exterior member

Claims (4)

[Claims] 1. A writing board having an exterior frame surrounding a writing surface, wherein a thin plate-shaped exterior member having elasticity is detachably attached to the exterior frame to cover the surface of the exterior frame. , Writing board. 2. The writing board according to claim 1, wherein the exterior member has a U-shaped cross section along a surface shape of the exterior frame. 3. The writing board according to claim 1, wherein a gloss enhancement treatment is applied to a surface of the exterior member. 4. The writing board according to claim 1, wherein the exterior member has been subjected to decoration processing by design or coloring.