JP3450282B2 - Road display device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a road display device which is installed at a road edge, a road center, or the like and displays a predetermined display to a passerby on a road through a display portion of a display member.

[0002]

2. Description of the Related Art Various types of road display devices are installed on roads, as represented by road signs. In this type of road display device, for example, a desired index is formed on the display portion of the display member, and various information is given to road pedestrians such as pedestrians and drivers through this index.

As an index of the display unit, it is generally constituted by various methods such as characters, patterns, colors, contour shapes, etc., alternatively or by appropriately combining them. Is. Also,
As the display method of the display unit, in addition to direct visual recognition of the index, a reflective type such as external light such as headlights is actively reflected in the display unit, or an internal light source such as a fluorescent lamp or an external device introduced There is a transmissive type in which light is transmitted in the display section. According to the latter two display methods, desired visibility can be ensured on the display unit not only in the bright place or the daytime but also in the dark place or the night.

Further, some road display devices have a display unit formed of a reflecting mirror. This road display device is installed, for example, at an angle such that the opposite roads are projected on the reflecting mirror at an intersection, and the road conditions of the other side that cannot be visually recognized by the road passerby are displayed. It is displayed to passersby.

[0005]

By the way, such a road display device as described above is installed at a road edge such as a shoulder or a central portion of a road such as a median strip so that a passerby can easily visually recognize the road display device. It is a thing. For this reason, the display unit of the road display device is gradually exposed to the elements such as being exposed to wind and rain, being subjected to mud splashing from a traveling vehicle, and further being adhered with oil and the like contained in exhaust gas discharged from the vehicle. It will be polluted and the visibility for road passers will gradually decrease.

Such a situation can be prevented by regularly cleaning the display section. However, the number of road display devices is enormous, and in many cases, they are arranged at high places. Therefore, in order to regularly clean such a road display device, a great deal of labor and cost are required.

[0007] On the other hand, among conventional road display devices, there is also provided a device that uses a wind turbine to maintain the visibility of the display portion. That is, a wiper movably arranged so as to be in contact with the surface of the display unit is connected to a windmill, and the wind force causes the wiper to slide on the surface of the display unit. However, in such a road display device, the wiper continuously moves on the surface of the display unit as long as the wind is blowing. Therefore, for a passerby, not only is the continuously moving wiper cumbersome but it is difficult to visually recognize the display on the display unit, but also the moving wiper may be attracted, and the display on the display unit may be overlooked. Further, in the above-mentioned road display device, the wind turbine can be rotated almost without stopping, and the rotation speed of the wind turbine becomes extremely high in a storm such as a typhoon. Therefore, the structure is complicated and the weight is significantly increased.

In view of the above situation, the first object of the present invention is to provide a road display device capable of maintaining the visibility of the display unit without requiring a great deal of labor and cost.

Further, in addition to the above-mentioned first problem, the present invention provides a road display device capable of maintaining the visibility of the display unit without further complicating the structure and significantly increasing the weight. This is the second problem to be solved.

[0010]

In the invention according to claim 1 of the present application, a display member for displaying to a road pedestrian through the display unit, and a wipe member arranged so as to be in contact with the surface of the display unit, A wind receiving member that operates according to a change in the wind direction is provided, and the wipe member is moved along the surface of the display unit by the operation of the wind receiving member.

In the invention according to claim 2 of the present application, in the invention according to claim 1 described above, the display portion is formed on the arcuate circumferential surface of the columnar display member, and the display member rotates around the axis of the display member. In the aspect, the wind receiving member is arranged in the outer peripheral region of the display portion, and the wind receiving member holds the wipe member.

According to claim 3 of the present application, in the invention according to claim 1 described above, the wind blows to the outer surface area of the display section in a manner of turning around a predetermined axis along the central axis of the display section. A receiving member is provided, and the wind receiving member holds the wipe member.

In the invention according to claim 4 of the present application, in the invention according to claim 1 described above, the display section is formed on one side surface of the display member having a columnar shape, and the display section reciprocates in the outer surface area. The wind receiving member is disposed, and the wind receiving member holds the wipe member.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings showing the embodiments. 1 to 4 conceptually show a first embodiment of a road display device according to the present invention. The road display device P1 exemplified here is
It is installed at a road edge such as a road shoulder or a road central portion such as a median strip, and a support shaft 2 is provided on an upper surface of a base plate 1. The support shaft 2 has a thin cylindrical shape, and extends vertically upward from a central portion of the base plate 1 having a rectangular plate shape.

A columnar display member 10 is provided on the support shaft 2. The display member 10 has a hollow shape including a cylindrical peripheral wall portion 11, and an upper wall portion 12 and a lower wall portion 13 that close the upper and lower end surfaces of the peripheral wall portion 11. The display member 10 includes fitting holes 1 formed in central portions of the upper wall portion 12 and the lower wall portion 13.
The support shaft 2 is fixed to the support shaft 2 with the support shaft 2 penetratingly held by the support shaft 2a and 13a.

The display member 10 is provided with a display portion 14 over the entire arcuate circumferential surface of the peripheral wall portion 11. Display unit 14
Although not shown in the drawing, indicates an index according to information to be given to a road passer, and is composed of characters, patterns, and / or characteristic colors. In consideration of visibility in a dark place or at night, the display unit 14 adopts a reflecting member such as a demilimeter,
Transmitting internal light sources such as fluorescent lamps or introduced external light by configuring it to actively reflect external light such as headlights or applying transparent or translucent members such as glass and resin It is preferable to configure as follows. However, in any case, it is preferable that the surface of the display unit 14 is a smooth surface.

Reference numeral 3 in the drawing is a connecting ring for reinforcing the connection between the support shaft 2 and the base plate 1.

On the other hand, the road display device P1 includes a rotating member 20. The rotating member 20 is formed by integrally forming an upper plate portion 21, a lower plate portion 22, and a wind receiving portion 23.
The upper plate portion 21 has a substantially disc shape slightly larger than the upper wall portion 12 of the display member 10, and is rotated to the upper end portion of the support shaft 2 via an upper bearing 24 provided on the lower surface of the central portion thereof. It is movably arranged. The lower plate portion 22 has a substantially circular plate shape similar to that of the upper plate portion 21 described above, and has a through hole 22a at the center thereof, and a lower bearing 25 provided in the through hole 22a is used. It is rotatably disposed between the connecting ring 3 of the support shaft 2 and the lower wall portion 13 of the display member 10. The wind receiving portion 23 has a columnar shape having a length larger than that of the display member 10, and extends along the axial direction of the display member 10 at a position slightly separated from the peripheral wall portion 11 of the display member 10. The peripheral surface of the upper plate portion 21 and the peripheral surface of the lower plate portion 22 are connected to each other.

The rotating member 20 is provided with a housing groove 23a in the wind receiving portion 23. The housing groove 23a is provided in the display member 10
Is a single recess formed along the axial direction of the display member 10 at a portion facing the display portion 14, and a plurality of wiper blades 30 are housed and held in series in the recess. . Each of the wiper blades 30 is formed of a flexible and elastic synthetic resin material such as rubber, and one end thereof has a pointed shape in the cross-sectional shape. It is fitted in the accommodation groove 23a so as to be able to move forward and backward while facing the surface of the display portion 14.

A plurality of pairs of permanent magnets 4 are provided between the accommodation groove 23a of the wind receiving portion 23 and each wiper blade 30.
0a and 40b are arranged. Permanent magnets 40 forming each pair
a and 40b are attached to the inner wall of the housing groove 23a and the base end surface of the wiper blade 30 so that the same magnetic poles face each other, and the tip portions of the wiper blade 30 are respectively attached by the magnetic repulsive force that interacts with each other. It is pressed against the surface of the display unit 14.

The road display device P1 having the above-described structure has, for example, a total height of about 1290 mm and the display member 1
The diameter of 0 is configured to have an outer dimension of about 200 mm, and is installed at a road end such as a road shoulder through the base plate 1 or a road central portion such as a median strip.
It functions so as to give desired information to road passers through the index.

Here, even in the road display device P1, the display portion 14 thereof is exposed to wind and rain, is subjected to mud splashing from a running vehicle, and is included in exhaust gas discharged from the vehicle. There is a possibility that oil or the like will gradually become soiled due to reasons such as adhesion, and the visibility for road passers will gradually decrease.

However, according to the above-described road display device P1, when the wind blows, the wind receiving portion 23 receives the wind and the rotating member 20 appropriately rotates about the axis of the display member 10, so that the rotation is performed. The tip of the wiper blade 30 held by the wind receiving portion 23 of the member 20 comes into sliding contact with the surface of the display portion 14. As a result, the peripheral wall portion 11 of the display member 10
Even in the case of the display portion 14 having a relatively large area, which is the entire area of the circular arc circumferential surface, foreign matter such as mud and oil adhering to the surface is removed by the wiper blade 30, and its visibility is restored. Will be able to. This action is
As long as the wind direction changes, it will be carried out continuously and automatically. Therefore, according to the road display device P1,
The desired visibility can be maintained on the display unit 14 without any labor or cost.

Moreover, the rotating member 20 of the road display device P1 is appropriately changed in direction so that the resistance of the wind receiving portion 23 to the wind is minimized, and a strong wind blows under a storm such as a typhoon. Even if it does, it does not rotate continuously at high speed. That is, the rotating member 20 only rotates around the axis of the display member 10 so that the wind receiving portion 23 is always located leeward.

Therefore, the rotation supporting portions 2 and 2 of the rotating member 20.
It is not necessary to apply a strong structure as 4, 25, and the structure is not complicated and the weight is not significantly increased. As a result, the rotating member 20 can be used even when an extremely small wind blows.
Can be reliably rotated. In addition, the display unit 1
No excessive sliding contact between the surface of No. 4 and the tip of the wiper blade 30 occurs, which is extremely advantageous in terms of durability of each. Further, for the passers-by of the road, the wind receiving portion 23 does not impair the visibility of the display portion 14 and does not unnecessarily attract interest, so that the display on the display portion 14 can be reliably viewed. It will be possible. However, even if the wind direction is constant, the wind receiving portion 23 of the rotating member 20 does not stop in the leeward direction, but is affected by the guard rail, the soundproof wall, and the ground existing around the road display device P1, or traveling. It is constantly moving due to the turbulence generated by the influence of moving vehicles. Therefore, the sliding contact between the surface of the display unit 14 and the wiper blade 30 is not delayed.

In the first embodiment described above, a wiper blade formed of a resin material and having a blade shape is illustrated as the wiping member, but foreign matter attached to the display unit is removed by relative movement with the display unit. As long as it is possible, for example, a brush-shaped one, a cloth-shaped one, or the like may be applied. Further, in the above-described first embodiment when applying the blade-shaped wipe member, since a plurality of blades are arranged in series, when it is necessary to replace due to reasons such as wear,
Only the worn one can be replaced without replacing all at once, and the running cost can be reduced. However, a continuous wipe member may be applied as the wipe member.
Further, although the repulsive force of magnetic force is used to press the wipe member against the surface of the display unit, elastic means such as a spring is applied and the elastic force is used to move the wipe member to the display unit. Of course, it does not matter even if it is pressed to.

Further, in the above-described first embodiment, a cylindrical member is applied as the display member, and the display portion is provided on the entire arc peripheral surface of the peripheral wall portion, but the present invention is not limited to this. Instead, for example, the display unit may be configured only on a part of the circular arc peripheral surface of the display member having a cylindrical shape, or the display unit may be configured on the circular arc peripheral surface of the columnar member having a fan-shaped or semicircular cross section. It doesn't matter. In these cases, it is sufficient to provide means for restricting the movement range of the wiper blade between the display member and the rotating member so that the wiper blade makes sliding contact only with the surface of the display unit. Further, even when the display section is bulged in a barrel shape, or conversely is recessed in a spool shape, it is possible to expect the same operational effect by arranging the wiper blade along this. Further, although the display unit which displays by using the index is illustrated, it is of course possible to apply the display unit which is simply configured by a reflecting mirror.

Further, in the above-described first embodiment, the display member is installed so that its axis is along the vertical direction, but it is not always necessary to install the display member so that its axis is along the vertical direction. .

FIGS. 5 to 7 show a second embodiment of the road display device according to the present invention. The road display device P2 exemplified here is similar to the above-described first embodiment.
It is installed at the road edge such as the shoulder and the center of the road such as the median strip.

As is clear from the figure, this road display device P2 is provided with a base 100 at the upper end of the mounting pole A standing upright at the installation location. The base 100 has a mounting hole 10
It is attached to the mounting pole A via 1 and has a housing recess 102 on its front surface. The accommodating recess 102 is formed by providing an annular peripheral wall 104 around the entire circumference of a disc-shaped bottom wall portion 103, and has a screw fastening hole 105 at the center of the bottom wall portion 103.

A display member 110 is housed and held in the housing recess 102. The display member 110 has a disk shape having a size that fits into the accommodation recess 102 described above, and has a screw insertion hole 111 formed at a portion corresponding to the screw fastening hole 105, and the display portion 110 is provided on the surface thereof. 112
Is configured. Although not clearly shown in the figure, the display unit 112 shows an index corresponding to information to be given to a road passer, and is composed of characters, patterns, and / or characteristic colors. Is. This display unit 11
In consideration of visibility in a dark place or at night, 2 is configured to positively reflect external light such as headlight by applying a reflecting member such as a demilimeter, or transparent such as glass or resin. Alternatively, it is preferable to apply a semitransparent member so that the internal light source such as a fluorescent lamp and the introduced external light are transmitted. However, in any case, it is preferable that the surface of the display unit 112 is formed as a smooth surface.

On the other hand, the road display device P2 includes a turning member 120. The swivel member 120 includes a shaft portion 121.
And a pair of revolving parts 122 and 123 and only one wind receiving part 124. The shaft portion 121 is a columnar portion having a larger diameter than the screw insertion hole 111 of the display member 110 described above. The shaft portion 121 has a screw insertion hole 121a and a head accommodation hole 121b at the axial center thereof, and the head accommodation hole 121b and the screw insertion hole 12 are provided.
1a, and further through the screw insertion hole 111 of the display member 110 described above, the screw fastening hole 105 of the accommodation recess 102.
By fastening the screw 130 to the screw, it is possible to rotate around the axis of the screw 130. A pair of revolving parts 1
Reference numerals 22 and 123 denote prismatic portions extending from the peripheral surface of the shaft portion 121 along the surface of the display portion 112 in the direction of being separated from each other. The turning portions 122 and 123 are provided with housing grooves 122a and 123a, respectively. Accommodation groove 122
Reference characters a and 123a are formed at portions of the display member 110 that face the display portion 112, and house the wiper blade 140 therein. Wiper blade 14
0 is molded by a flexible and elastic synthetic resin material such as rubber, one end of which has a pointed shape in the cross-sectional shape, and each of the pointed ends has a display portion. 1
12, the housing groove 122a,
It is fitted in 123a so as to be able to move forward and backward. Each swivel unit 122,
Housing grooves 122a, 123a of 123 and wiper blade 1
40 and a plurality of pairs of permanent magnets 150a,
150b is provided. Each pair of permanent magnets 150
a and 150b are the inner walls of the housing grooves 122a and 123a and the wiper blade 140 so that the same magnetic poles face each other.
Of the wiper blade 140 is pressed against the surface of the display unit 112 by the magnetic repulsive force that interacts with each other. Wind receiving part 124
Is a plate-shaped member that extends outward from the outer surface of the one swivel portion 122. The reference numeral 160 in FIG. 6 is a balance weight attached to the other swivel portion 123 in order to balance the weight with the one swivel portion 122 provided with the wind receiving portion 124.

The road display device P2 having the above-described structure is installed on the road edge such as the road shoulder or the road central portion such as the median strip through the mounting pole A as described above, and the display portion 112 of the road display device P2. It functions to give desired information to road passers through the index.

Here, even in the road display device P2, the display portion 112 thereof is exposed to the wind and rain, is subjected to mud splashing from a traveling vehicle, and is included in the exhaust gas discharged from the vehicle. There is a possibility that oil or the like will gradually become soiled due to reasons such as adhesion, and the visibility for road passers will gradually decrease.

However, according to the road display device P2, when the wind blows, the wind receiving portion 124 receives the wind and the turning member 120 rotates around the axis of the screw 130, that is, around the axis of the display 112. The tip of the wiper blade 140 held by the turning portions 122 and 123 of the turning member 120 comes into sliding contact with the surface of the display portion 112 in order to turn appropriately. As a result, foreign matter such as mud and oil adhering to the surface of the display unit 112 is removed by the wiper blade 140, and the visibility can be restored. This action is continuously and automatically performed as long as the wind direction changes. Therefore, according to the road display device P2, desired visibility can be maintained on the display unit 112 without any labor and cost.

Moreover, the turning member 120 of the road display device P2 changes its direction appropriately so that the resistance of the wind receiving portion 124 to the wind is minimized, and a strong wind blows under a storm such as a typhoon. Even if it is, it does not rotate continuously at high speed. That is, the turning member 120 only turns about the axis of the display unit 112 so that the wind receiving unit 124 is always located leeward.

Therefore, the swivel support portion 10 of the swivel member 120.
It is not necessary to apply a strong structure as 5,121,130, and the structure is not complicated and the weight is not significantly increased. As a result, the swivel member 120 can be swung reliably even when a very small wind blows. In addition, the surface of the display unit 112 and the tip of the wiper blade 140 do not excessively contact each other, which is extremely advantageous in terms of their respective durability. Further, for the road passers, the turning portions 122, 1 of the turning member 120 are
Since 23 does not impair the visibility of the display unit 112 and does not unnecessarily attract interest, the display of the display unit 112 can be reliably viewed. However, the wind receiving portion 124 of the turning member 120 is not stopped in the leeward direction even if the wind direction is constant, and the road display device P is used.
2 is constantly moving due to turbulent flow generated by the influence of guardrails, soundproof walls and the ground existing around 2, or the influence of the traveling vehicle. Therefore, the display unit 11
The sliding contact between the surface of No. 2 and the wiper blade 140 is not delayed.

In the second embodiment described above, a wiper blade having a blade shape formed of a resin material is used as an example of the wipe member, but foreign matter attached to the display unit is removed by relative movement with the display unit. As long as it is possible, for example, a brush-shaped one, a cloth-shaped one, or the like may be applied. Further, although the repulsive force of magnetic force is used to press the wipe member against the surface of the display unit, elastic means such as a spring is applied and the elastic force is used to move the wipe member to the display unit. Of course, it does not matter even if it is pressed to.

Further, in the above-described second embodiment, the disk-shaped member is applied as the display member, but the outer shape does not necessarily have to be circular, and may be triangular, quadrangular, fan-shaped, or the like. It can be appropriately changed according to the index to be displayed. Whichever display member is used, the display portion does not need to be flat and may be concave or convex. Moreover, you may make it arrange | position a some rotating member with respect to a display part. Further, although the display unit which displays by using the index is illustrated, it is of course possible to apply the display unit which is simply configured by a reflecting mirror.

Further, in the above-mentioned second embodiment, the display unit is installed so that the central axis thereof is horizontal, but the installation mode is not limited to this.

8 to 11 show a third embodiment of the road display device according to the present invention. The road display device P3 illustrated here is installed at a road edge such as a road shoulder or a road central portion such as a median strip, similarly to the road display devices of the first and second embodiments illustrated above. The display member 210 is provided on the upper surface of the base plate 200. The display member 210 is a box body having a substantially rectangular parallelepiped shape, and extends vertically upward from the upper surface of the base plate 200 having a rectangular plate shape.

The display member 210 is provided with a rectangular display portion 211 on the front surface thereof and the display portion 2
Cutouts 2 are provided at positions above and below 11 respectively.
12, 213 are provided.

Although not shown in the figure, the display unit 211 shows an index according to the information to be given to the road passers, and is composed of characters, patterns, and / or characteristic colors. It was done. This display unit 211 is
In consideration of visibility in the dark or at night, by applying a reflecting member such as a demilimeter, it can be configured to positively reflect external light such as headlights, or transparent or semi-transparent such as glass or resin. By applying a transparent member,
An internal light source such as a fluorescent lamp or introduced external light may be transmitted. However, in any case, it is preferable that the surface of the display unit 211 is a smooth surface.

The notches 212 and 213 each extend in the horizontal direction and have a length that is substantially the same as the width of the display portion 211. The notches 212 and 213 communicate the inside and outside of the display member 210 with each other. ing.

Further, the display member 210 has a pair of V guide tracks 214 and 215 provided therein. The V guide tracks 214 and 215 are plate-shaped members each having both end edges along the longitudinal direction formed in a mountain shape, and in a state in which the V guide tracks 214 and 215 are horizontal to portions slightly above the notches 212 and 213, respectively. 212, 21
3 is attached along the extending direction.

These pair of V guide tracks 214, 2
A reciprocating moving body 220 is arranged between the fifteen. The reciprocating vehicle 220 includes an upper traveling body 221 and a lower traveling body 222.
And a connecting body 223.

Upper traveling body 221 and lower traveling body 222
Has a rectangular plate shape with a sufficiently small length and a slightly large width with respect to the above-described V guide tracks 214 and 215. The upper traveling body 221 and the lower traveling body 222 respectively correspond to the corresponding V guide tracks 214, 2 via two pairs of V guide wheels 224.
It is supported by 15 so as to be able to reciprocate. The V guide wheel 224 has a V-shaped groove 224a on each circumferential surface, and is rotatably arranged around the vertical axis in a state where these grooves 224a are at the same height position. The V guide tracks 214, 21 are provided between the grooves 224a of the pair.
Holds 5

The connecting body 223 is a long member arranged along the vertical direction, and is connected to the upper and lower traveling bodies 221 and 222 via the respective ends. The free link member 22 housed in the display member 210 is attached to the connecting body 223.
A four-bar parallel crank is provided between the No. 5 and 5 by a pair of link members 226 and 227. Free link member 225
Extends along the vertical direction, and a pair of link members 228 and 229 form a four-bar parallel crank also with the rear wall 210a of the display member 210 described above.

On the other hand, in the road display device P3, the wind receiving member 23 is provided at a portion of the display member 210 facing the display portion 211.
It has 0. The wind receiving member 230 is a long member having a length sufficiently larger than the display portion 211 of the display member 210. The wind receiving member 230 is provided with the connecting brackets 231 and 232 provided at both upper and lower ends thereof so that the notch 2
It is connected to the above-mentioned reciprocating body 220 via 12, 213 and extends along the vertical direction.

The wind receiving member 230 is provided with a housing groove 230a at a portion facing the display portion 211. Storage groove 2
Reference numeral 30a is a single recess formed along the vertical direction, and accommodates and holds a plurality of wiper blades 240 in series therein. Wiper blade 24
0 is molded by a flexible and elastic synthetic resin material such as rubber, one end of which has a pointed shape in the cross-sectional shape, and each of the pointed ends has a display portion. Two
The housing 11 is fitted in the housing groove 230a so as to be able to move back and forth while facing the surface of the housing 11.

A plurality of pairs of permanent magnets 250a and 250b are arranged between the accommodation groove 230a of the wind receiving member 230 and each wiper blade 240. The permanent magnets 250a and 250b forming each pair have the inner wall of the housing groove 230a and the wiper blade 2 so that the same magnetic poles face each other.
The wiper blade 240 is attached to the base end surface of the wiper blade 40, and the tip of the wiper blade 240 is pressed against the surface of the display unit 211 by the magnetic repulsive force that interacts with each other.

In the road display device P3 having the above structure, for example, the total height of the display member 210 is about 1000.
mm, the width of the front surface is approximately 240 mm, and is installed at the road edge such as the road shoulder via the base plate 200 or the road central portion such as the median strip, and is an index of the display unit 211. It functions to give desired information to road passers-by.

Here, even in the road display device P3, the display portion 211 thereof is exposed to wind and rain, or is subjected to mud splashing from a running vehicle, and is further included in exhaust gas discharged from the vehicle. There is a possibility that oil or the like will gradually become soiled due to reasons such as adhesion, and the visibility for road passers will gradually decrease.

However, according to the road display device P3, when the wind blows, the wind receiving member 230 receives this wind and the wind receiving member 230 moves with respect to the display unit 211. In this case, in the road display device P3, the wind receiving member 2 is connected via the connecting brackets 231 and 232.
30 is connected to the reciprocating body 220, and the connecting body 223 of the reciprocating body 220 and the free link member 22.
5, the free link member 225 and the display member 2
Since a four-bar parallel crank is formed between each of the rear wall 210a and the rear wall 210a, the wind receiving member 230 is reciprocated in the left-right direction along the surface of the display unit 211 while the wind-receiving member 230 remains in the vertical direction. To move.

Meanwhile, in the road display device P3, when the wind receiving member 230 reciprocates, the accommodation groove 23 thereof is formed.
The wiper blade 240 accommodated in and held in 0a comes into sliding contact with the surface of the display unit 211 via the respective tip portions. As a result, foreign matter such as mud and oil adhering to the surface of the display unit 211 is removed by the wiper blade 240, and the visibility can be restored. This effect continues as long as the wind direction changes,
And it is carried out automatically. Therefore, according to the road display device P3, desired visibility can be maintained on the display unit 211 without any labor or cost.

Moreover, the wind receiving member 230 of the road display device P3 moves in either the left or right direction according to the wind direction, and when strong winds are blowing under a storm such as a typhoon. However, it does not move back and forth continuously at high speed. That is, the wind receiving member 230 moves toward the leeward side and then stops there.

Therefore, the surface of the display portion 211 and the tip of the wiper blade 240 do not excessively come into contact with each other, which is extremely advantageous in terms of their respective durability. Further, for the passersby of the road, since the wind receiving member 230 does not impair the visibility of the display unit 211 and does not unnecessarily attract interest, the display of the display unit 211 can be reliably viewed. It will be possible.

In the third embodiment described above, a blade-shaped wiper blade formed of a resin material is used as the wiping member, but foreign matter attached to the display unit can be removed by relative movement with the display unit. Other materials such as a brush-shaped material and a cloth-shaped material can be applied as long as they are used. Further, in the above-described third embodiment when applying the blade-shaped wipe member, since a plurality of blades are arranged in series, when the replacement is required due to wear or the like, all are temporarily replaced. Without this, it becomes possible to replace only the worn one, and the running cost can be reduced. However, a continuous wipe member may be applied as the wipe member. In addition, although the repulsive force of magnetic force is used to press the wipe member against the display unit, elastic means such as a spring is applied and the elastic force is used to press the wipe member against the display unit. Of course it does not matter if you do.

Further, in the above-described third embodiment, the wind receiving member is reciprocated in the left-right direction, but it may be reciprocated in the vertical direction or the oblique direction. Note that the display unit does not necessarily have to be flat,
It may be convex or concave. Further, although the display unit that displays by means of the index is illustrated, it is of course possible to apply it to a display unit that is simply composed of a reflecting mirror.

Further, in the above-described third embodiment, the display member is installed so that its axial center is along the vertical direction, but it is not always necessary to install the display member so that the axial center thereof is along the vertical direction. .

[0061]

As described above, according to the present invention,
The wiping member is moved by the wind receiving member that operates according to the change of the wind direction, and the foreign matter adhering to the surface of the display unit is removed by the wiping member, so that the display unit does not require any labor or cost. Therefore, the desired visibility can be maintained. Moreover, even when a strong wind is blowing under a typhoon or other storm, the wipe member does not move continuously, and therefore the wipe member may impair the visibility of the display unit for road passers-by. Without
Further, since the interest is not unnecessarily attracted, the display on the display unit can be surely visually recognized.

If the wind receiving member is configured to rotate or swivel as in the invention described in claim 2 or 3, it is not necessary to apply a strong structure to the supporting portion of the wind receiving member. In addition, the structure is not complicated and the weight is not significantly increased. This makes it possible to reliably move the wind receiving member even when a very slight wind blows. Further, there is no occurrence of excessive sliding contact between the surface of the display portion and the wipe member, which is extremely advantageous in terms of their respective durability.

[Brief description of drawings]

FIG. 1 is a sectional side view showing a first embodiment of a road display device according to the present invention.

2 is a cross-sectional view of the road display device shown in FIG.

3 is an external perspective view of the road display device shown in FIG.

4 is a side view of the road display device shown in FIG. 1. FIG.

FIG. 5 is a sectional side view showing a second embodiment of the road display device according to the present invention.

FIG. 6 is a front view of the road display device shown in FIG.

FIG. 7 is a side view of the road display device shown in FIG.

FIG. 8 is a sectional side view showing a third embodiment of the road display device according to the present invention.

9 is a cross-sectional view of the road display device shown in FIG.

10 is an external perspective view of the road display device shown in FIG.

11 is a cross-sectional front view of the road display device shown in FIG.

[Explanation of symbols]

1 base plate 2 Support shaft 3 connecting ring 10 Display member 11 Peripheral wall 12 Upper wall 12a, 13a Fitting holes 13 Lower wall 14 Display 20 rotating member 21 Upper plate 22 Lower plate 22a through hole 23 Wind receiver 23a accommodation groove 24 upper bearing 25 lower bearing 30 wiper blade 40a, 40b Permanent magnet 100 base 101 mounting hole 102 accommodation recess 103 bottom wall 104 Circular wall 105 screw fastening hole 110 Display member 111 screw insertion hole 112 display 120 swivel member 121 Shaft 121a screw insertion hole 121b Head accommodation hole 122,123 swivel part 122a, 123a accommodation groove 124 Wind receiver 130 screws 140 wiper blade 150a, 150b Permanent magnet 200 base plate 210 Display member 210a rear wall 211 Display 212,213 notches 214,215 V guide track 220 reciprocating mobile 221 Upper traveling body 222 Undercarriage 223 connected body 224 V guide wheel 224a groove 225 free link member 226,227 Link member 228,229 Link member 230 Wind receiving member 230a accommodation groove 231, 232 connection bracket 240 wiper blade 250a, 250b Permanent magnet A mounting pole P1 Road display device P2 Road display device P3 Road display device

Claims (4)

(57) [Claims] 1. A display member for displaying an image to a road pedestrian through the display unit, a wipe member arranged in contact with a surface of the display unit, and a wind-receiving member that operates according to a change in wind direction. A road display device characterized in that the wiper member is moved along the surface of the display portion by the operation of the wind receiving member. 2. A display unit is formed on an arcuate circumferential surface of a columnar display member, and the wind receiving member is arranged in an outer peripheral region of the display unit in a manner of rotating around an axis of the display member,
The road display device according to claim 1, wherein the wind receiving member holds the wipe member. 3. The wind receiving member is arranged in the outer surface area of the display unit in a manner of turning around a predetermined axis along the central axis of the display unit, and the wind receiving member holds the wipe member. The road display device according to claim 1. 4. A display unit is formed on one side surface of a columnar display member, and the wind receiving member is arranged in a mode of reciprocating in an outer surface area of the display unit, and the wind receiving member is provided with the wipe member. The road display device according to claim 1, wherein the display device is held.