JPH07331622A - Ring for cleaning cylindrical road sign - Google Patents

Abstract

PURPOSE:To obtain a cleaning ring with a simple construction making cleaning operation by running winds of a car or natural crosswinds without covering a reflection surface for a cleaning device of a road sign equipped with the cylindrical reflection surface erected or horizontally built along a shoulder or a dividing strip and the other indication surface. CONSTITUTION:A cleaning ring is equipped with a spiral braid 5 fitted to a cylinder section including a reflection surface and the other indication surface 1 in a rotatable manner, and a slidable friction body 12 sliding the indication surface 1 is provided to the internal circumferential edge of the spiral braid 5. The cleaned indication surface 1 is normally used as the reflection surface, and it is applicable even if it is used as an indication surface (for example, a painting surface of fluorescent paint and the other paint, a luminous surface incorporating a lamp into a clear cylindrical body, etc.,) other than the reflection surface. The braid 5 is so provided that its surface is inclined to one of tangential directions of the circumferential surface of the cylindrical body 2 against the alignment thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for a cylindrical road display which stands up along a road shoulder or a median strip or is installed horizontally and guides the direction of the road. The present invention relates to a cleaning device that is particularly suitable for a road display that has a reflective surface as a display surface and reflects the light of a headlight of a running vehicle to improve the display function in a tunnel or at night.

[0002]

2. Description of the Related Art In a curved portion of a road, a pole with reflective tape is erected on the surface along the road shoulder or median strip in order to ensure the safety of the vehicle, especially in a tunnel or at night. A road display is widely used in which light from a headlight of a running vehicle is reflected to allow a driver to recognize the road display and to indicate a traveling direction of the vehicle. When dust adheres to the reflecting surface of such a road display, the reflectance of the reflective tape is reduced, and the function of the road display is significantly reduced. Therefore, it is necessary to clean the reflective surface of such road display regularly or when it becomes dirty, but it is extremely difficult to keep the reflective surface of this kind of road display installed in large numbers manually all the time. Is.

Therefore, there has been proposed a cleaning device for cleaning the reflecting surface by utilizing the wind generated by the traveling of the automobile or the natural wind. For example, as shown in FIG. 6, a circular reflecting surface 22 mainly provided in the tunnel and oriented in the traveling direction of the vehicle.
In a road display 21 provided with, a radial blade 23 rotatably supported at the center of its reflection surface is rotated by wind generated when the vehicle is running, and a blade provided on the side of the blade 23 on the reflection surface 22 side. A cleaning device for cleaning the reflecting surface 22 by rubbing the rubbing body 24 against the reflecting surface 22 has been put into practical use.

What is more commonly used as a road display is an elongated cylindrical pole having a reflecting surface 1 at the upper end as shown in FIG. 7, and such a pole is used as a shoulder or a median strip. By erected at regular intervals, the curving direction of the road is indicated. In this case, the reflective surface 1 is usually formed by attaching a reflective tape or applying a reflective coating on the surface of a cylindrical resin. This kind of road marking is often used not only in tunnels but also on ordinary roads with open surroundings.

As shown in FIGS. 8 and 9, a plurality of blades 27 in a direction parallel to the axis of the cylinder are radially arranged with respect to a road display provided with such a cylindrical reflecting surface, and these blades are arranged. By tilting 27 in one direction tangential to the peripheral surface of the pole, the blade 27
There is an attempt to clean the reflection surface 1 by rotating the pole around the axis of the pole and rubbing the reflection surface 1 with a sliding member attached to the side of the blade on the reflection surface side.

[0006]

In the tunnel, a large traveling wind is generated when the vehicle is traveling. The device shown in FIG. 6 collides this traveling wind with the reflecting surface to create a radial flow,
By this, the blades 23 are rotated, and the principle similar to that of the blow-flow turbine is utilized. However, since the traveling wind is diffused on a general road having an open periphery, the traveling wind is not generated enough to rotate the blade 23 unless the vehicle travels so close to the road display.

The conventional structure shown in FIGS. 8 and 9 considers that the blade 27 is rotated by a natural crosswind, but in order to rotate the blade 27 even in a weak wind, the area of the blade 27 is increased. There must be. Moreover, at least three blades are required to rotate the blades in any position. Since these blades 27 are inclined in the tangential direction of the peripheral surface of the pole, if the area of the blades is increased, most of the important reflective surface 1 is covered by the blades 27 depending on the position of the blades, and it is displayed as a road display. It happens that you lose use.

The present invention has been made in order to solve such a problem, and does not obscure the reflective surface of a road display having a cylindrical reflective surface, and is relatively free of the running wind of a vehicle or natural environment. An object of the present invention is to obtain a cleaning ring capable of cleaning the reflective surface 1 and other cylindrical display surfaces even with a weak cross wind.

[0009]

The cleaning ring of the present invention has the above-mentioned display surface of a cylindrical road display for guiding a running vehicle by providing a display surface 1 on the surface of a cylindrical body 2 which is erected or laid horizontally. 1 is for cleaning. The cleaning ring of the present invention includes a spiral blade 5 which is fitted in a cylindrical portion including the display surface 1 so as to be freely rotatable.
A rubbing body 12 for rubbing the display surface 1 is provided on the inner peripheral edge 6 of the. The display surface 1 to be cleaned is usually a reflective surface, but it is also applicable to a display surface other than the reflective surface (for example, a painted surface of fluorescent paint or other paint, a light emitting surface with a lamp built into a transparent cylinder, etc.). It is possible.

The surface of the blade 5 is the normal line 7 of the cylindrical body 2.
With respect to the cylindrical body 2, it is provided so as to be inclined in one of the tangential directions of the peripheral surface of the cylindrical body 2.

[0011]

Since the blade 5 of the cleaning ring of the present invention has a spiral shape as a whole, it is only necessary to provide one blade 5 which goes around the circumference (of course, there may be more than one turn). Thus, the blade 5 receives wind in all directions. Therefore, only one blade 5 is required. Further, since the blade 5 spirally surrounds the reflecting surface 1, even if the width of the blade is widened, the blade only covers a part of the reflecting surface in the longitudinal direction, and most of the reflecting surface is covered. It doesn't happen.

In the tunnel, the traveling wind when the vehicle travels causes a large velocity gradient between the traveling side of the automobile and the wall surface of the tunnel. Therefore, the blade 5 is not inclined to receive the wind. Even (the surface of the blade 5 is oriented in the direction of the normal 7 of the cylindrical body 2), the cleaning ring of the present invention rotates.

In order to rotate the cleaning ring of the present invention by a running wind having a small velocity gradient or a natural cross wind on a normal road having an open periphery, the blade 5 is unidirectionally tangential to the circumferential surface of the cylindrical body. Incline to. As a result, the blade receives wind on one side and escapes on the other side, so that the blade 5 is rotated even by traveling wind or cross wind having no velocity gradient.

In order to provide the blade 5 with such an inclination, the increment of the length of the outer peripheral side when the plate is cut from the inner peripheral length is the blade width when the blade is wound around the cylindrical body. The plate cutting may be performed so as to be slightly shorter than the increment of the outer peripheral length corresponding to b (see FIG. 4).

[0015]

1 to 3 are views showing an embodiment of the present invention. A disc-shaped umbrella 3 is attached to the center of the upper end of a pole 2 provided with a cylindrical reflecting surface 1 on the side surface of the upper end so as to be freely rotatable around a pin 4 at the center thereof. A blade 5 forming a cleaning ring hangs in a ribbon shape. The blade 5 spirals once around the peripheral surface of the portion of the pole 2 where the reflecting surface 1 is provided, and is located on one side of the tangential direction of the peripheral surface with respect to the normal 7 of the pole 2 as shown in FIG. It is inclined.

As shown in FIG. 2, on the inner edge 6 of the blade 5, there is provided a rubbing body 12 in which a brush 11 is planted in one groove 9 of an elongated cross-section H-shaped member 8 made of synthetic resin. It is mounted by fitting the groove 13 on the opposite side to the inner edge 6 of the blade 5 and adhering it. In the case where the blade 5 is inclined with respect to the normal to the cylindrical surface, it is preferable that the brush 11 hits the cylindrical surface perpendicularly by using the refracted H-shaped section 8 as shown in FIG. 2B. More preferable.

The blade 5 is made of synthetic resin and is manufactured by joining a flat plate, which is cut into an arc shape, in the longitudinal direction as shown in FIG. When mass-producing, the blade 5 can be formed by injection molding or extrusion molding.

FIG. 5 shows an example in which the blade 5 is oriented in the normal direction of the pole, but this structure is effective only when it is placed in a tunnel, and in general, an embodiment in which the blade is inclined is used. Is more useful. When the blade 5 is provided in the normal direction, the H-shaped cross section 8 for holding the brush 11 may have a non-bent shape shown in FIG.

In the cleaning ring of the present invention having the inclined blade 5 as shown in FIG. 3, when a cross wind is received from one direction, the portion inclined to the upwind side receives the wind and is inclined to the downwind side. Because the part where the wind escapes releases the wind, it rotates around the pole 2 due to the difference in wind pressure. With this rotation, the brush 11 attached to the inner peripheral edge 6 of the blade 5 rubs the reflective surface 1 to keep the reflective surface 1 clean.

In the illustrated embodiment, the weight of the blade 5 is supported by the pin 4 at the center of the pole tip, so that the blade 5 is rotated by a light force. A hollow disk-shaped guide plate 14 is provided at the lower end of the blade 5 to reduce the runout of the lower end of the blade 5.

In the description of the above embodiment, the pole installed in the vertical direction has been described, but a cleaning ring having a blade 5 of the same structure for a road display in which a similar cylindrical body is horizontally mounted is also provided. Can be adopted. Blade 5
1 is provided in the lateral direction, guide plates as shown by reference numeral 14 in FIG. 1 are provided at both ends of the blade 5 to prevent the blade 5 from moving in the axial direction by a flange or a protrusion on the peripheral surface on the cylindrical body side.

[0022]

According to the cleaning ring of the present invention described above, the blade can be formed of one piece, so that the manufacturing is easy, and the cleaning ring can be provided at a lower cost than the cleaning tools of the same kind. Also, because the whole is composed of one spiral blade, the blade does not obscure the display surface widely even if the width of the blade is widened, and therefore it smoothly rotates even in a weak wind and is more visible. An excellent cleaning ring can be obtained.

Further, by making the entire product synthetic resin,
The overall weight can be reduced and the rotation resistance can be reduced to ensure reliable rotation even in weak winds.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention mounted on a pole.

FIG. 2 is a partially enlarged view of a sliding member attached to a blade.

FIG. 3 is a cross-sectional view of the blade attached to the pole

FIG. 4 is a view showing an example of blade cutting.

FIG. 5 is a cross-sectional view of a blade having another structure.

FIG. 6 is a diagram showing an example of a road display cleaning ring having another structure.

FIG. 7 is a diagram showing an example of a cylindrical road display.

FIG. 8 is a perspective view showing a conventional cleaning ring in a cylindrical road display.

9 is a cross-sectional view of the device of FIG.

[Explanation of symbols]

 1 Reflective Surface 2 Cylindrical Body (Pole) 5 Blade 6 Inner Perimeter 7 Normal 12 Rubbing Body

Claims (2)

[Claims] 1. A cylindrical road display cleaning ring for guiding a running vehicle by providing a reflective surface or other display surface (1) on the surface of a vertically or horizontally installed cylindrical body (2).
It is equipped with a spiral blade (5) that is freely rotatably fitted in the cylindrical part including (1), and the inner peripheral edge of this spiral blade (5)
A cleaning ring for the display surface of a cylindrical road display, in which a rubbing body (12) for rubbing the display surface (1) is provided on (6). 2. The surface of the blade (5) is defined by the normal line of the cylindrical body (2).
The cleaning ring according to claim 1, wherein the cleaning ring is inclined to one side in the tangential direction of the peripheral surface of the cylindrical body (2) with respect to (7).