JPH0211197Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a small blackboard that is convenient for use outdoors, such as at factory sites and on-site inspections, and is particularly effective when used in rainy weather.

I often take photographic evidence outdoors. To explain this using the example of a factory site, as the factory progresses, it is necessary to take photographs of, for example, places that will eventually be buried underground, and the state of reinforcing bars before cement construction. .

When these photographs were taken, records such as the builder's name and drawing numbers were also taken.

Traditionally, these records were written on a small blackboard and photographed along with the scene, but when there is heavy dust, the Chiyok characters become difficult to see, and when it rains, the blackboard gets wet and the Chiyok characters are erased, which is a problem. Was.

Therefore, in reality, people used to put umbrellas on the blackboard or write on blank paper with felt pens and paste them on the blackboard.

Recently, there are white boards that you can write on with felt pens that don't erase easily even with rainwater.

However, the surface of whiteboards is so smooth that when it gets wet with rain, felt pens slip and ink splatters, making it difficult to write on them, and they are also expensive. Furthermore, because the white part is wider than the font, it reflects sunlight and the font does not appear clearly in photographs.

The same goes for flash photography at night, making it useless. Therefore, there is a solution to cover the blackboard with transparent vinyl, but if it is thin and soft, the surface will wrinkle, and even if it is thick enough, if it is wavy, the photo will reflect unevenly or not be visible. It would be fine if it adhered to the blackboard surface without any unevenness, but the stain would transfer to the vinyl surface and it would be a hassle to wipe it off every time.

As a solution to these shortcomings, the
There is something like -196595. This has a structure in which a plurality of blackboards are placed in and out of a storage box in a pull-out manner from the side, with a transparent board in front. However, there are many disadvantages when putting in and taking out from the side.

That is, this type of blackboard is something that is carried around and is sometimes shaken violently, so it is often easy to fly out and fall off. This is even more true when it is used in a hanging manner. Also, in strong winds and rain, water may flood from the sides.

This invention was made to eliminate the above-mentioned drawbacks, and its configuration will be explained below.

That is, basically the blackboard surface 1 is the same as the above conventional example.
and a transparent cover plate 2 having a size that covers the blackboard surface 1. A frame body 4 having a projecting surface part 3 projecting from the blackboard surface 1 is provided on at least two opposing edges of a blackboard surface 1 of a small blackboard that is commonly used in view of the purpose of use. In the illustrated example, it is shown as being provided on the entire edge. The height of the protruding surface part 3 from the blackboard surface 1 is determined by placing the wide surface of the transparent cover plate 2 with one side bent to form the upper surface part 5 over the protruding surface part 3, as shown in FIG. It is only necessary to create a distance that does not allow the blackboard surface 1 to touch the blackboard surface 1. Frame 4 as this distance maintaining means
does not necessarily require the frame 4; for example, the blackboard surface 1
It is also possible to have short pillars erected at the four corners of the
On the contrary, it goes without saying that the height may be obtained by bending the edges of the transparent cover plate 2.

Next, the two opposing left and right protruding surfaces 3 of the frame 4 are
As shown in FIG. 1, an outer frame 7 is provided on both sides to form a sliding gap 6 that allows the transparent cover plate 2 with its top to be slid in the vertical direction. The outer frame 7 forms a sliding gap 10 for storing the transparent cover plate together with the back plate 9 on the back side of the blackboard surface 1 to form a storage section.

In order to further prevent rainwater from entering the blackboard surface 1, both sides of the transparent cover plate 2 are bent slightly inward to form a bent part 11, and a groove 12 for sliding the bent part 11 is formed in the outer frame. It may also be attached to 7.

With the above structure, in rainy weather, if the transparent cover plate 2 is inserted and dropped into the gap 6 for both slides with the protruding direction of the upper surface part 5 directed toward the back surface of the blackboard surface 1, the upper surface part 5 Due to the presence of the blackboard surface 1, it stays on the upper surface of the outer frame 7 at the upper edge of the blackboard surface 1 and prevents rainwater from entering from the upper surface. Due to the presence of the protruding surface portion 3, the transparent cover plate 2 does not touch the blackboard surface 1, so the Chiyoke letters will not be rubbed or transferred, and of course, will not get wet with rainwater. Since the transparent cover plate 2 is a plate, it does not wave, so it does not affect photography, and since the Chiyok characters are written on a black board, there is no reflection, so it is possible to take beautiful photographs.

Note that it is particularly preferable for photography to make the distance between the transparent cover plate 2 and the blackboard surface 1 slightly inclined rather than parallel, since the angle of light reflection will be different.

In addition, 8 is a part of the frame 4 to prevent the space formed by the blackboard surface 1 and the transparent cover plate 2 from sweating (condensation) on the surface of the transparent cover plate 2 due to a temperature difference with the outside air. This is a ventilation hole cut out. In the illustrated example, the upper and lower frames 4 are cut, and of course, the upper surface is also provided with grooves, for example, in the left-right direction, so as to communicate with the outside air. Further, it is also possible to provide through holes at the corners and edges of the blackboard surface 1, or to provide some through holes at the edges of the transparent cover plate 2 to allow some rainwater to enter.

Since the transparent cover plate 2 is not needed in sunny weather, the protrusion direction of the upper surface part 5 is opposite to the above-mentioned direction, and its lower edge is dropped into the transparent cover plate storage slide gap 10, which is the storage part, so that it does not get in the way. It is convenient to carry as a whole, without any damage or scratches.

As detailed above, the basic configuration is transparent cover plate 2.
Since the transparent cover plate 2 is attached from above, it is comfortable to sit on without falling off even if you are shaken, and the transparent cover plate 2
Since there is a top surface 5, there is no need to worry about rainwater getting in.

FIG. 4 shows another embodiment, in which the edge of the upper surface portion 5, which is one side of the transparent cover plate 2, is connected near the edge of the frame 4 so as to be rotatable, for example, in a hinge shape. This is what I did.

In this way, you can write by simply lifting the lower side of the transparent cover plate 2, and the transparent cover plate 2 acts as a shelter even in the rain, which is convenient, but since it is always on the outside, it may cause damage to the surface. There will be more opportunities.

If the damage is severe, it will affect the photograph, so it is necessary to pay attention to the material of the transparent cover plate 2.

In the above-mentioned embodiment, the eaves function is also the upper surface part 5.
It is sufficient to insert the end sides of the two slides into the gaps 6 for both slides.

In both embodiments, it is possible to attach a rotatable plate on one side to the back side to make it a stand type, or to make it a hanging type by passing a string through the upper side of the frame 4.
Further, if a luminous tape or the like is attached to a part of the front surface of the protruding surface portion 3 or the outer frame 7, it will be convenient for focusing during night photography.

As described in detail above, it has a relatively simple structure and can be manufactured using an ordinary blackboard, so it can be provided at low cost and is convenient for those involved.

[Brief explanation of drawings]

Figure 1 shows a transparent cover plate 2 in an embodiment of this invention.
FIG. 2 is a perspective view of a transparent cover plate used in combination with the embodiment shown in FIG. 1, FIG. 3 is a plan view showing only the main parts of FIG. 1, and FIG. 4 shows another embodiment. FIG. 1 is a blackboard surface, 2 is a transparent cover plate, 3 is a protruding surface portion, 4 is a frame body, 5 is an upper surface portion, 6 is a sliding gap, 7 is an outer frame, and 8 is a ventilation hole.

Claims (1)

[Claims for Utility Model Registration] 1 Consists of a combination of a blackboard surface 1 and a transparent cover plate 2 having a size that covers the blackboard surface 1, and the transparent cover plate 2 is in front of the blackboard surface 1 when combined. A full-height type small body characterized in that a spacing maintaining means is provided on either of the two so that the transparent cover plate 2 is arranged with a gap therebetween, and in the transparent cover plate 2, one side of the transparent cover plate 2 is bent to form an upper surface portion 5. blackboard. 2. As a distance maintaining means, there is a frame 4 having protruding surface parts 3 protruding from the blackboard surface 1 on at least two opposing edges of the blackboard surface 1, and a frame 4 is provided on at least two opposing edges of the blackboard surface 1. The full-height blackboard according to claim 1, which is a registered utility model, is provided with an outer frame 7 that forms a sliding gap 6 that allows the transparent cover plate 2 to be slid in the vertical direction. 3. The full-circle blackboard according to claim 2 of the utility model registration claim, which has a storage section for the transparent cover plate 2 on the back side of the blackboard surface 1. 4 One side of the upper surface portion 5 of the transparent cover plate 2 is connected to the frame 4
The full-circle blackboard according to claim 1 of the utility model registration claim 1, which is rotatably connected near the edge of the blackboard.