JPS6140803B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device for a display board such as a road sign that automatically prevents the display surface from being obscured by snow or the like.

Traffic signs and other display boards installed under the Road Traffic Act are indispensable for ensuring traffic safety and providing destination guidance, and must perform their functions day and night throughout the year.

However, in areas with heavy snowfall, especially in regions of our country located on the Sea of Japan side, where there is a lot of wet wind and snow, such wind and snow often adheres to the writing surface of the sign and is hidden, making it difficult to read the letters and symbols. This causes a phenomenon in which the sign is unable to perform its function, resulting in an extremely alarming situation.

The present invention was made in view of such circumstances,
This is a display device for signs, etc., which is configured to automatically make snow fall as described above using natural wind pressure.

The details of the present invention will be explained below with reference to the drawings.

FIG. 1 is an overall view showing an embodiment of the present invention,
FIG. 2 is a perspective view showing the configuration of the present invention, and FIGS. 3 and 4 are explanatory diagrams of the operation of the present invention.
Figures A, B, and C show the state of change seen from the side.
Figure 4 A, B, and C show how the sign changes when viewed from a plane.

1 is a pole and 2 is a support structure for the sign. 3 is a display board forming a sign; 4 is an elastic band fixed along the back side of the display board;
Two bearings 5, 5' are provided at the ends. The elastic band 4 is made of a metal plate such as a thin steel plate, and preferably has a U-shape, and preferably has a slightly narrower central portion 4'. Moreover, the bearings 5 and 5' are
The rotation axes 6, 6' are not on a common straight line,
It is formed by two axes that are not on the same straight line. α indicates the angle at which the rotation axes 6 and 6' intersect. Although it is a necessary condition for achieving the purpose of the present invention that the two rotation axes are different, the material of the display board used and the shape and strength of the elastic band 4 are determined depending on the natural conditions of the area where the sign is installed. You should take this into account and decide accordingly.

Reference numerals 7 and 7' denote two rotation support shafts having at least one end fixed to the arm 2, and the other rotatably supported by bearings 5 and 5', from which a display board 3 such as a sign is hung. It is something to keep. Therefore, it is installed so that it has the same rotation axis as the rotation axis 6, 6' of the bearings 5, 5'.

In the embodiment shown in FIG. 2, the two rotating shafts are axially oriented inwardly downward from the horizontal line and protrude inwardly from both sides of the display panel.

However, the present invention is not limited to such axial conditions, and the object can be achieved by setting two axes that are not in the same straight line and are not parallel.

It is desirable for display boards such as signs to be made of a suitably flexible, elastic, and lightweight material, so that their physical properties do not change much due to changes in temperature.
Moreover, it should be weather resistant. Examples of materials that meet this requirement include acrylic-modified high-impact vinyl chloride (MMA/PVC alloy) resin.
Regular size road signs (length of one side 500-1200
(on the order of millimeters), it is preferable to use the resin plate with a thickness of about 2.0 to 5.0 mm as the original plate, and mark the surface with a reflective sheet or other paint.

The connection between the display board 3 and the elastic band 4 having a bearing is as follows.
Although not particularly limited, adhesive bonding is preferable because it is uniform, but rivets and screws may be used, or a combination thereof may be used. In addition, in the front-end explanation as an embodiment of the present invention, a case has been described in which the display panel 3 and the elastic band 4 are made of separate materials, but it is also possible to form them integrally with a material that can have the characteristics of both. The purpose of the present invention can be achieved.

Rotation support shafts 7, 7' and bearings 5 attached thereto,
Although the purpose of the present invention can be achieved without particularly precise fitting, the rotation axes 6 and 6' can maintain two different rotation axes that are not on the same straight line, and can be used for a long period of time. Any structure can withstand this, and is not limited to the illustrated example.

Now, since the present invention is constructed as described above, if it is posted on a post 1 or cross beam installed outdoors on a road or the like as shown in Fig. 1, it will look like Fig. 3 B when viewed from the side. As shown, it becomes vertical due to its own weight, but when viewed from the top, it has a very large horizontal radius of curvature roh, as shown in Figure 4 (b). Therefore, if the natural wind pressure a acts from behind the display board 3 as shown in Figure 3A,
Due to the rotational moment, the lower end of the display board 3 tries to be pushed forward more, but the bearing 5,
Since the rotational axes of the display panel 5' do not coincide with each other, the tilting movement of the display panel 3 and the elastic band 4 is limited in some respects. As a result, the surface shape of the display board becomes a curved surface with a large radius and the center point located at the front. r1v indicates the radius of curvature of the vertical plane, and r1h indicates the radius of curvature of the horizontal plane. When there is no wind and wind pressure a no longer acts on it, it returns to the basic position shown in Figure B.

In addition, when the wind direction changes and wind pressure p from the front acts on the display board, it will tilt in the opposite direction from when wind pressure a was applied, as shown in Figure 3 C and Figure 4 C, but to a certain extent. Since these are two bearings whose rotational axes do not coincide, they are similarly limited up to a certain point and at the same time change the surface shape of the display board.
That is, the display body forms a curved surface with a vertical surface having a radius of curvature r2v having the center point at the rear, and a horizontal surface having a radius of curvature r2h having the center point at the rear.
Here, the radius of curvature r2h of the horizontal plane is smaller than the radius of curvature r0h of the horizontal plane shown in FIG. 4B. In other words, the result is a change in curvature. In this case as well, when the wind pressure P ceases to act, it returns to the basic position shown in FIGS. 3B and 4B, as in the case where the wind pressure a acts.

As described above, the present invention is characterized in that it is a bulletin board device that changes the surface shape of the display board itself depending on which direction the wind pressure of the natural wind acts on the display board 3. Moreover, the degree of change in the surface shape changes depending on the strength of the wind pressure, so even if snow, etc. adheres to the surface of the display board along with the wind, the display will change due to the ever-changing action of the wind. Since the surface shape of the board itself changes from moment to moment, the snow that adheres to it will not be stable and will fall immediately. That is, display boards such as signs posted according to the present invention are not hidden by snow, and can fully function as a sign even in the winter when there is wind and snow. In addition, since it uses wind pressure in the natural world, it does not require any special power source or heat source, and it is extremely economical as it automatically causes snowfall, and its simple structure is advantageous in terms of maintenance. It has great effects.

[Brief explanation of the drawing]

Fig. 1 is an overall view showing an embodiment of the present invention, Fig. 2 is a perspective view showing the configuration of the present invention, Fig. 3 A, B, C and Fig. 4 A, B, C are effects of the present invention. FIG. 3 is a side view and FIG. 4 is a plan view of main parts. 1...Pole, 2...Archive, 3...Display board, 4
...Elastic band, 5,5'...bearing, 6,6'...rotating shaft, 7,7'...rotating support shaft.

Claims (1)

[Claims] 1. At least one end is fixed to a cross beam such as a pole arm and has different rotation axes that are not on the same straight line. 2.
It consists of a rotational support shaft, two bearings having the same rotational axis as the rotational support shaft and pivotally attached to the rotational support shaft, and an elastic display plate formed integrally with the bearing. 1. A sign display device characterized by being configured to change the surface shape of a display board by swinging the board.