JPH0776811A - Road sign structure and demounting preventing method - Google Patents

Abstract

PURPOSE:To provide a road sign structure which is constituted to facilitate installation of it to a road and removal of it therefrom and besides easily restore to its original state even when it is trod with an automobile by a method wherein the cylinder part and the base body of the road sign structure are formed of a soft elastomer. CONSTITUTION:A cylindrical nut 26 is previously embedded in a road R. By effecting screwed-mounting between the cylindrical nut 26 and a bolt 28 on the base body 20 side, the base body 20 is fixed on a road. A cylinder body 10 made of a soft elastomer is fixed to the base body 20 by means of a press ring 30. Bent wedge-form metals 34 are integrally mounted at intervals of a distance on the lower end of the cylinder body 10 to provide proper rigidity. Further, a small sign is mounted on the upper end part of the cylinder body 10 so as to be easy to see. The surface of the cylinder body 10 is covered with a plurality of transparent films. When the surface of the cylinder body 10 is contaminated, a contaminant on a surface is removed by peeling the transparent films one by one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention temporarily fixes a vehicle on a road surface in order to divide a lane of an automobile road, regulate a traveling area, and guide a vehicle to a specific zone. It relates to a road sign structure that can be set up.

[0002]

2. Description of the Related Art As a road sign, there is known a road sign comprising a cylindrical body made of rubber or a synthetic resin material and a base body at its lower end (see Japanese Utility Model Laid-Open No. 120512/1989). In this road sign, as the above cylindrical body, a reinforcing cloth is integrally provided along the inner wall surface thereof,
Further, a brim-shaped locking portion is provided at the lower end. The base body is composed of a base body that can close the lower end of the cylindrical body and a pressing ring that can be fitted to the outside of the base body, and has a flanged shape of a cylindrical body that is inserted into the pressing ring from below. The locking portion is locked by the locking portion on the inner wall of the pressing ring, and the base portion is fitted to the pressing ring so as to close the lower end of the cylindrical body, and the lower end of the cylindrical body is inserted between the pressing ring and the base body. It is a structure in which the brim-shaped locking portion is tightly held.

[0003]

By the way, in the above-mentioned conventional road signs, since a reinforcing cloth is provided inside the inner wall surface of the cylindrical body made of rubber or synthetic resin to reinforce the cylindrical body, cracks are not generated. Even if it can be reduced, there is a problem that the restoring force when it is pushed by the tire of a traveling automobile is not sufficient and the durability when it is repeatedly stepped down by the tire is poor. Also, since the cylinder body, the base body and the press ring are made of the same material, when the base part is fixed to the road surface with bolts and used semi-permanently, the press ring and the cylinder body can be attached to and removed from the base body. It was difficult. Moreover, when such a road sign is repaired and replaced, it is often done while the vehicle is running, and this replacement work requires a short and simple work procedure. The construction of the road sign requires a considerable amount of time to install the road sign structure.

On the other hand, when an automobile collides with a road structure at a high speed, there is a drawback that a lower end portion of the cylindrical body which is integrally formed with the base body is detached from the base body.

By the way, in order to make the recognition of the presence of the road sign more sure and clear, most of the conventional road sign structures described above reflect light in one or two or more streaks on the outer peripheral side surface of the upper part of the sign structure body. The sheet was stuck and wrapped.
However, these light-reflecting sheets discolor to dark black due to the pollution of chemical substances such as exhaust gas from automobiles, SOX and NOX, or dust on the road. It is the current situation that the function cannot be fully exerted due to the pollution of. Moreover, in the conventional signs, the light reflecting sheet is attached only to the outer peripheral surface of the sign, so the driver on the hill where there are many sharp curves or on the high position of the driver's cab such as a truck has a light on the outside of the sign. There is a problem in that the presence of the reflection sheet makes it easy to overlook its existence, which makes it difficult to achieve the original gaze guidance function of road signs.

[0006]

As a result of earnest research for solving the above-mentioned problems, the present invention has been achieved, that is, the present invention holds a cylindrical body and a lower end portion of the cylindrical body in a detachable manner. A road sign structure comprising a base body for erecting a cylindrical body on a road surface, wherein the cylindrical body is integrally formed of a soft elastomer and has a cylindrical portion of a lower end opening and a U-shape around the lower end of the cylindrical portion. A base body made of a soft elastomer, which is composed of a belt-shaped lower end portion (flange portion) and in which the above-mentioned base covers the lower surface of the entire U-shaped belt-shaped lower end portion (flange portion) of the cylindrical body, and is detachably fitted to the outside of the base body. Consisting of a hard synthetic resin pressing ring to be fitted, the bottom surface of the central portion of the base body, the bolt or nut mounted and fixed to the road surface and the nut or bolt for screwing is fixed by being buried in advance. the above A road sign structure in which a locking edge that covers the entire circumference U-shaped band-shaped lower end portion (flange portion) of the cylindrical body is formed inside the ring, and is engaged with a protrusion on the outer peripheral edge thereof. For attachment / detachment to / from the base body due to a high-speed automobile collision with the sign structure, a plurality of side surfaces are previously formed on the lower end of the U-shaped strip around the lower end of the circular tubular body integrally formed with the base body of the cylindrical body. Partial circular drilling Bent gutter-shaped metal is integrally formed, and in order to make the road signs clearly visible to the car driver, a small sign body that can be freely inserted and removed is attached to the upper end of the cylinder body. And a road sign structure constituted by a base body for holding the lower end of the cylindrical body and erecting the cylindrical body on the road surface, wherein a transparent synthetic resin heat-shrinkable tube is provided on the outer peripheral surface of the cylindrical body. It is a road sign structure that adheres to .

More specifically, the road sign structure according to the present invention comprises a cylindrical body and a base body for detachably holding the lower end of the cylindrical body so that the cylindrical body stands upright on the road surface. The base body is a structure in which a nut or a bolt to be screwed with a bolt or a nut fixed in advance on the road surface to be upright on the road surface is embedded in the base body. The cylindrical body is made of a flexible elastomer,
A urethane elastomer is preferable, and a thermoplastic urethane elastomer having a JIS-A rubber hardness (JIS K6301) of 80 to 95 degrees, which is integrally molded by injection molding, is preferable. Moreover, a plurality of ridges, preferably 4 to 8 ridges, are formed upward on the inner wall surface of the lower portion of the cylindrical portion. This ridge is more effective when increasing the wind pressure from the outside or the restoring force when the cylinder is pushed by the tire.

On the other hand, the base main body is made of a soft elastomer and covers the lower surface of the lower end (flange) of the U-shaped belt around the entire circumference of the cylindrical body, and a hard body detachably fitted and fixed to the outside of the base main body. It is composed of a synthetic resin holding ring. Then, in the central portion of the base body, a nut or bolt for screwing the bolt or nut mounted and fixed to the road surface is embedded and fixed in advance, so first, the base body is screwed and fixed on the road surface. After that, the cylinder may be fitted and fixed to the base body with a pressing ring, or the cylinder body previously fitted and fixed to the base body with a pressing ring may be screwed to a bolt or nut on the road surface. You may fix it. At this time, the U-shaped belt-shaped lower end portion (flange portion) of the entire circumference of the cylindrical body is covered inside the pressing ring,
A locking edge that engages (fits) with the protrusion on the outer peripheral edge is formed. The base body is preferably injection-molded with a flexible urethane elastomer having JIS-A rubber hardness of 80 to 95 degrees, which has flexibility similar to that of the cylindrical body. On the other hand, the pressing ring is harder than the soft elastomer. , Preferably Rockwell hardness (ASTM D-785) is 10
0-120 degree hard synthetic resin, such as thermosetting urethane elastomer or polypropylene, polyethylene, A
Thermoplastic synthetic resins such as BS and nylon are suitable.

In FIG. 1, reference numeral 10 denotes a cylindrical cylindrical body, which is an injection molded body of a soft thermoplastic urethane elastomer. The cylinder 10 is formed in a cylindrical shape in which an upper half portion is parallel, and a lower half portion is a conical tubular shape having a slight taper to widen the hem. In this case, it may be formed in a cylindrical shape having the same diameter from the upper portion to the lower portion without having the taper. Then, air holes 12 are opened in the side wall portion 11, and circumferential grooves 13 for sticking a labeling tape (not shown) are provided on the outer surface of the upper half portion in a plurality of stages in the vertical direction. Book-shaped ribs 14 are provided at equal intervals (see FIG. 2).
A circular all-round U-shaped belt-shaped lower end portion (flange portion) 15 is integrally provided in the opening at the lower end, and a ridge 16 is formed along the upper surface edge portion of this all-round U-shaped belt-shaped (flange portion) 15. Has been done.

The U-shaped strip-shaped lower end portion (flange portion) 1 around the entire circumference
The base main body 20 located below 5 is made of the same soft urethane elastomer as the cylindrical body 10, has the same outer diameter as the U-shaped strip-shaped lower end portion (flange portion) 15 of the entire circumference of the cylindrical body 10, and its outer surface A ridge 21 is formed in the circumferential direction.
An upper surface of the base body 20 that fits into the lower end portion of the cylindrical body 10 is integrally formed on the upper surface, and a cylindrical nut 26 that is embedded and fixed in the road surface R in advance is screwed to the lower central portion of the upper surface. A bolt 28 for wearing is integrally embedded and fixed. As a result, the base body 20 is fixed to the road surface. The pressing ring 30 fitted to the outer surface of the base body 20 has a U-shaped belt-shaped lower end portion (flange portion) 15 of the entire circumference of the cylindrical body 10 placed on the base body 20 at the lower portion of the inner periphery thereof and its peripheral portion. It has a locking edge 32 that fits with the ridge 16. Therefore, when the base body 20 is screwed and fixed to the tubular nut 26 which is embedded and fixed on the road surface, the cylindrical body 10 may be previously fitted and fixed to the base body 20 by the pressing ring 30. The cylindrical body 10 may be fitted and fixed after the 20 is fixed to the road surface.

Further, since an inclined edge of the gap 33 is formed between the pressing ring 30 and the road surface R, the tip of a hoe, a scoop, a shovel or the like is inserted into this gap and lifted up to press down. The ring 30 can be easily removed and the cylindrical body 10 can be removed.

In the above embodiment, the tubular nut 26 is embedded and fixed in advance on the road surface R. However, instead of the tubular nut, a bolt is embedded and fixed, and the base body 20 is embedded with the nut. Alternatively, both may be screwed and fixed.

FIG. 3 is a plan view of the side surface partial circular drilling bent gutter metal 34 of the present invention, and FIG. 4 is a bottom view of the same.

FIG. 5 is a right side view (outer curve) of the side surface partial circular hole bending gutter-shaped metal 34 of the present invention, and FIG. 6 is a left side view (inner curve) of the same. A plurality of the side-portion circular drilled bent gutter-shaped metal parts 34 are integrally formed in advance on the lower end portion 15 of the U-shaped strip around the lower end of the cylindrical body of FIG. The purpose of this is to prevent the cylindrical body from being detached from the base body due to velocity collision. When the side surface circular hole curved gutter-shaped metal 34 is integrally formed around the entire circumference of the cylindrical U-shaped belt-shaped lower end portion 15 without gaps, the entire circumference U-shaped belt-shaped lower end portion of the cylindrical body has a curved gutter-shaped metal 34 rigidity and is a road sign. The entire base body 20 of the structure is uprooted and removed from the road surface R. In order to prevent the cylindrical body from being detached from the road surface and the base body, the interval between the bent gutter metal and the bent gutter metal is preferably 1 to 3 cm. The number of bent gutter-shaped metal 34 mounted is preferably 4 to 6. The circular side surface portion of the bent gutter-shaped metal is drilled for the purpose of more firmly fixing it by bridging with the lower end of the U-shaped strip around the entire circumference of the cylindrical body.

FIG. 7 is a right side view (outer curve) of the side surface elliptic hole-shaped bent gutter-shaped metal 34 of the present invention. The left side view corresponds to FIG. 6 and is omitted.

FIG. 8 is a cross-sectional view of a bent gutter-shaped metal, which has a U-shaped cross section.

FIG. 9 is a cross-sectional view of the bent gutter-shaped metal 34c of the present invention, the cross section of which is a left-right asymmetrical U-shape. The circular drilling may be an oval drilling regularly or irregularly.

FIG. 10 is a longitudinal sectional view showing an example of the road marking structure according to the present invention. In the figure, 1 is a road sign body, and 2 is a sign mounting member that constitutes a part of a small sign body, and shows a state in which a sign mounting member 2 is attached to an upper end portion 8 of a road sign body 1. Reference numeral 10 is a cylindrical body that constitutes the road sign body 1, and is formed by injection molding of a soft thermoplastic urethane elastomer. The diameter of the upper end portion 8 is slightly smaller than that of the lower portion 9, and the upper end portion 8 is
An insertion opening 6 for removably inserting and attaching the marker attaching member 2
Are formed. The mark attaching portion of the mark attaching member 2 is illustrated as a hollow cylinder in this example, but may be a prism having a hollow lower end. Further, this material is preferably a soft urethane elastomer like the hollow cylinder 10 of the road sign body 1. Further, a taper portion 4 having a tapered shape is formed at a lower end portion 5 thereof, and a slit portion 3 for attachment is provided at a portion above the taper portion where the hollow cylindrical body 10 is fitted and which is detachably mountable. Has been. When the marker mounting member 2 is inserted, both are securely fitted so that they will not easily come off. And the lower end portion 5 of the sign attachment member 2
Since the taper portion 4 is hollow and formed so as to be easily fitted and removed, this portion has elasticity, and its attachment and detachment are easy.

On the other hand, a projecting portion 16 is formed at the lowermost end of the road sign body 1, and reinforcing ribs 14 are provided on the lower portion 9 inside the hollow cylindrical body 10 in several rows in the vertical direction.
Reference numeral 7 denotes a light reflecting sheet, which is attached to the upper three outer surfaces of the road sign body 1 and the outer surface of the sign attaching member 2. In this case, if the upper end of the marker mounting member 2 is hollow, a lid-like object may be used to cover the hollow hole if necessary, and then the light reflection sheet 7 or the like may be attached thereon. The presence of the sign portion such as the light reflection sheet 7 is the most noticeable to the driver of the night car.

Numeral 12 is an air hole for preventing vacuuming when the cylinder 10 is bent and restored. Again 2
Reference numeral 2 denotes a base portion for establishing the hollow cylindrical body 10 on the road surface R. In this example, the base body 20 and the cylindrical body 10 directly fixed to the road surface R are used as an example.
It is composed of a holding ring 30 for abutting on the surface 0 and fittingly fixing it from the outside. The base body 20 is made of a soft urethane elastomer like the cylindrical body 10, and has a U-shaped belt-shaped lower end portion (flange portion) 1 around the cylindrical body 10.
5, it has an outer diameter substantially the same as that of the rib 5, and a ridge 21 is formed on the outer surface thereof, and it is firmly fixed to the base body 20 by a holding ring 30 formed of a hard synthetic resin such as nylon. A convex portion 38 that fits into the lower end portion of the cylindrical body 10 is integrally formed on the upper surface of the base body 20,
A bolt hole 36 is provided in a recess 37 provided in the center of the upper surface of the base body 20. The base body 20 is first fixed on the road surface by the anchor bolt 28 passed through the hole 36, and then the cylindrical body 10 is abutted on the road body. The cylindrical body is fixed to the road surface R by the pressing ring 30 from the outside. To remove this, first push the lower end of the presser ring 30 up with a screwdriver or the like to easily remove it. In this example, a detachable attachment type marker is shown, but the application of the present invention is not limited to this, and is also applicable to a fixed type marker.

Also in FIG. 10, the cylindrical body 10 is attached and detached by the collision of the road sign structure integrally formed with the U-shaped lower end portion 15 of the cylindrical body 10 and the base body 20 with a high-speed driving vehicle. In order to prevent this, a plurality of side surface circular drilled bent gutter-shaped metals 34 are provided on the lower end 15 of the U-shaped strip around the entire circumference of the cylindrical body.
Is preliminarily integrally molded so that the gap between the curved gutter-shaped metal members is 1 to 3 cm to prevent detachment from the locking edge due to collision with the cylindrical body of the high-speed driving vehicle. The proper rigidity of the lower end of the U-shaped strip around the entire circumference of the cylindrical body and the elongation of the elastomer prevent desorption during a collision.

In FIG. 12, 2 is a sign mounting member, the lower end 5 of which is a hollow cylinder and the front end of which has a tapered taper part 4, and the road sign body 1 on the upper outside thereof. The slit portion 3 corresponding to the wall thickness of the hollow cylindrical body 10 is formed. Then, as shown in FIG. 13, the slit portion 3 is fitted into the insertion hole 6 of the road sign body 1. In this case, since it is a hollow body, it can be easily contracted / expanded at the time of fitting / removing.

FIG. 14 is a vertical sectional view showing an example of a road sign structure according to the present invention. In the figure, 10 is a cylindrical body, which is formed by injection molding a soft thermoplastic urethane elastomer. The diameter of the top portion 8 is slightly smaller than that of the bottom portion 9. Further, a projection 16 is formed at the lowermost end, and a vertical projection (reinforcing rib) is formed at the lower part.
Several 14 are provided vertically inside the cylindrical body. 7
Is a light-reflecting sheet that is wrapped around the outer surface of the top in two places, which is the most noticeable area for night drivers.

In addition to the basic structure of the sign body as described above, 40 is an outer skin attached to the outer peripheral surface of the sign body.
It is formed by covering the entire outer peripheral surface of the above with a heat-shrinkable tube and then heat-treating at a predetermined temperature to shrink the entire tube and tightly adhere to the outer surface of the cylindrical body (see FIG. 15).

Numeral 12 is an air hole for preventing vacuuming when the cylinder 10 is bent and restored. Alternatively, in the present embodiment, a base portion for establishing the hollow cylindrical body 10 on the road surface R, and in this example, the base body 20 and the cylindrical body 10 that are directly fixed to the road surface R are contacted with the base body 20. It is composed of a holding ring 30 for fitting and fixing from the outside. The base body 20 is made of a soft urethane elastomer like the cylindrical body 10, has an outer diameter substantially the same as that of the lower end portion (flange portion) 15 of the U shape of the entire circumference of the cylindrical body 10, and the protrusion 21 is formed on the outer surface thereof. It is firmly fixed to the base body 20 by the holding ring 30 made of a hard synthetic resin such as nylon.
A convex portion 38 that fits into the lower end portion of the cylindrical body 10 is integrally formed on the upper surface of the base body 20, and a concave portion 37 provided at the center of the upper surface has a bolt hole 36. The base body 20 is first fixed on the road surface by the anchor bolts 28 passed through, then the cylindrical body 10 is brought into contact with this, and the cylindrical body is fixed to the road surface R by the pressing ring 30 from the outside. To remove this, first push the lower end of the presser ring 30 up with a screwdriver or the like to easily remove it. In this example, a detachable mounting type marker is shown.
The application of the present invention is not limited to this, and the present invention is also applicable to a fixed type label.

Also in FIG. 14, the cylindrical body 10 is attached and detached by the collision of the road sign structure integrally formed by the U-shaped lower end portion 15 of the cylindrical body 10 and the base body 20 with a high-speed driving automobile. In order to prevent this, a plurality of side surface circular drilled bent gutter-shaped metals 34 are provided on the lower end 15 of the U-shaped strip around the entire circumference of the cylindrical body.
Is integrally formed in advance so that the gap between the curved gutter-shaped metal members is 1 to 3 cm, and is prevented from being detached from the locking edge 32 due to the collision with the cylindrical body of the high-speed driving vehicle. The proper rigidity of the U-shaped band-shaped end portion of the entire circumference of the cylindrical body and the elongation of the elastomer prevent desorption during a collision.

Next, the coating process of the heat-shrinkable tube will be described. The heat-shrinkable tube used in this example is a Hishi tube (vinyl chloride ... made by Mitsubishi Plastics Co., Ltd.) with a thickness of 0.075.
A perforation 41 (perforation needle number 11, hole pitch 1.5 mm) is previously formed in mm, cut into an appropriate length corresponding to the height of the cylindrical body 10, and covered from the top 8 of the cylindrical body 10. To about 90 ° C. to uniformly shrink the whole and form the outer skin 40. The outer cover 40 was excellent in transparency and had no obstacle in the function of the light reflecting sheet. Further, the outer skin 40 was torn from the perforations 41, but it was easily torn and the outer skin 40 was easily peeled off.

[0028]

[Action]

1) Bolts or nuts are previously planted or embedded and fixed on the road surface, and the base body having the bolts or nuts screwed to the bolts or nuts is embedded beforehand is screwed onto the road surface to fix the base body to the road surface. The cylindrical body is fitted and fixed to the base body with the pressing ring. In this case, when the inner peripheral portion of the pressing ring is pressed against the lower end portion (flange portion) of the U-shaped belt around the entire circumference and pressed, the pressing ring fits into the base body and the cylindrical body is fixed to the base body.
In this case, a tubular cylindrical body previously fitted and fixed to the base body by a pressing ring may be screwed and fixed to a nut or bolt on the road surface. Then, when the pressing ring is lifted up, the pressing ring and the cylindrical body are sequentially removed. Alternatively, the sign body can be removed from the road surface by removing the screwed state of the bolt or nut on the road surface and the nut or bolt of the base body, and the sign body can be easily disassembled afterwards by prying the holding ring.

2) A plurality of side surface circular drilled bent gutter-shaped metals are integrally formed at a lower end (flange) of a U-shaped strip around the entire circumference of a cylindrical body at intervals with a base body and locking edges. If it is installed on the road as a sign structure, it will not be detached from the base body even in a collision with a high-speed driving car due to its appropriate rigidity and elongation of the elastomer.

3) If a marker mounting member is attached to the upper part of the main body, it can be visually recognized by a driver with a high cab, oversight is reduced, and distinction can be made clearly.

4) Regarding the antifouling property of the road sign structure, when the antifouling transparent outer skin is formed by the heat shrinkable film on the surface of the cylindrical body forming the road sign, the outer skin is excellent in transparency. The visual effect of the road sign structure is not different from that of the uncovered sign, and the function of the light reflecting sheet is not changed. The outer skin prevents the cylinder from being contaminated, and even if the contaminated body is replaced with a new outer skin, the outer surface of a new marker can be always exposed. Moreover, if a plurality of these skins are laminated in advance, it is rational because even if they are contaminated, they can be peeled off one by one from the surface. In addition, since the perforations are formed in the outer skin in advance, the old outer skin can be easily peeled off even when the replacement and replacement of each piece is performed, while the heat shrinking work of the new tube can be completed in a short time, resulting in heavy traffic. It is efficient because it can be constructed on site without any problems in the area.

[0032]

【The invention's effect】

1) The road sign structure of the present invention comprises a cylindrical body, a base body that covers the lower surface of the lower end portion (flange portion) of the U-shaped belt at the lower end of the cylindrical body, and a holding ring fitted to the outside of the base body. Since the cylinder body and the base body are made of a soft elastomer, and the holding ring is made of a hard synthetic resin, the cylinder body and the holding ring of the base body fixed to the road surface are formed. Easy to put on and take off. Further, since a bolt or a nut is embedded and fixed in the lower central portion of the base body, a nut or a bolt for screwing the bolt or nut is embedded and fixed in advance on the road surface. Since the attached base body can be easily screwed in and out, it can be suitably used for lane division, regulation or these changes, and when it is no longer necessary, leave a ridge on the road surface Since it is possible to remove all of them and it does not take time to remove them, it is possible to easily carry out repair and replacement of road signs even on a road surface with frequent traffic. Moreover, bolts or nuts remain on the road surface after leaving the road sign, but in the case of nuts, remaining in the road will not cause traffic obstacles, and in the case of bolts, there will be no problem and it is necessary. Then, you can easily dig up and cut off your neck. Furthermore, if an adjust anchor is used, it will be suitable if it is buried in the road beforehand, since all the metal fittings will remain buried in the road after removal and no protrusions will remain on the road. is there. In any case, the base including the base body and the pressing ring can be detachably attached to the road surface.

2) Since a plurality of side surface circular drilled bent gutter-shaped metals are integrally formed on the lower end (flange) of the U-shaped strip around the entire circumference of the cylindrical body with a certain space left between them, against collision of an automobile running at high speed. There is no longer any attachment or detachment from the locking edge, and there is no accident due to the cylindrical road lying down.

3) Since the road sign structure in which the sign attaching member is inserted in the upper part of the cylindrical body has a structure in which a small sign body which can be inserted and removed is inserted in the upper end portion of the main body of the road sign structure, The visual range of the sign is expanded, and even a driver with a high cab can easily and clearly recognize it without oversight. Since the road sign body of the present invention has a configuration in which a through hole is provided at the tip of a hollow cylindrical body, and the lower end of a sign attaching member for attaching a sign is removably inserted into the through hole. Since the sign can be attached and attached not only to the outer wall of the cylindrical body of the road sign body but also to the entire peripheral surface of the sign mounting member, the visual range of the sign by the driver can be further expanded, and naturally the upper surface of the sign can also be seen. Since the marker is attached, its visual surface is expanded to 180 degrees,
Even a driver with a high cab can recognize it more easily and clearly and without oversight. In addition, since the sign attachment member can be easily attached / detached to / from the road sign body in a short time, it is possible to freely update or attach / remove the sign when it is not needed. Is also effective and can be suitably used for lane classification and regulation. There are no particular restrictions on the method of mounting the road sign body that constitutes the present invention on the road, and it is possible to mount it by any method or device. In addition, the sign attaching member of the present invention has a hollow cylindrical shape at its lower end, and is provided with a tapered taper portion, and a slit portion corresponding to the hollow cylindrical wall thickness of the road sign body is provided. Therefore, it can be freely contracted and expanded, and can be freely inserted and removed. Moreover, since the slits are provided and are in a fitted state, they do not fall or come off due to wind pressure or the like. On the other hand, if both the road sign body and the sign mounting member are made of a soft urethane elastomer having a hardness within a specific range, the above effect is further promoted, and even if the vehicle collides with the road sign structure, it is an elastic body, so that the shock absorbing property is high. Safety is secured without damage.

4) In terms of antifouling property, the road sign structure of the present invention comprises a hollow cylindrical body and a base portion for holding the lower end portion of the cylindrical body to erect the cylindrical body on the road surface. On the outer peripheral surface of the cylinder of the road sign structure, the outer skin is formed by a transparent synthetic resin heat-shrinkable tube, so that the outer skin becomes dark due to vehicle exhaust gas pollution, road dust pollution, etc. Even if it is contaminated, it can always be retained as its clear marker by replacing and replacing the outer skin. Also, if several layers of this outer cover are laminated and covered, a new outer cover will appear from the bottom by peeling off the contaminated outer cover, so there is no need to wash the contaminated marker and it is also necessary to replace it with a new marker. Absent. Further, the light reflector can always exert its function sufficiently. And even if the sign body is stepped down by a tire or the like, the outer skin will not be torn,
It has excellent durability and weather resistance. Since the road marking structure of the present invention has the perforations for tearing formed in advance on the heat-shrinkable tube over the upper and lower sides of the tube in advance, the contaminated outer skin can be easily formed by using the perforations. Can be peeled off. Therefore, even at a road site with a large amount of traffic, not only the coating of the outer skin of the sign body but also the replacement work can be performed in a short time as a site work.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a road sign structure of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG.

FIG. 3 is a plan view of a bent gutter-shaped metal.

FIG. 4 is a bottom view of a bent gutter-shaped metal.

FIG. 5 is a right side view of a side-portion circular drilling product of a bent gutter-shaped metal.

FIG. 6 is a left side view of a side-portion circular hole drilling product of a bent gutter-shaped metal.

FIG. 7 is a right side view of a side surface elliptical holed product of a bent gutter-shaped metal.

FIG. 8 is a cross-sectional view of a U-shaped left-right symmetrical shape of a bent gutter-shaped metal.

FIG. 9 is a sectional view of a bent gutter-shaped metal in a U-shaped left-right asymmetrical shape.

FIG. 10 is a vertical cross-sectional view showing an example of a road sign structure according to the present invention.

11 is a cross-sectional view taken along the line AA of FIG.

FIG. 12 is a vertical cross-sectional view showing an example of a marker attaching member according to the present invention.

FIG. 13 is a partially enlarged vertical cross-sectional view showing a state in which a sign mounting member is attached to the road sign structure according to the present invention.

FIG. 14 is a vertical cross-sectional view showing an example of a road sign structure according to the present invention.

15 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

1 Road sign main body 2 Sign mounting member 3 Slit part 4 Tapered part 5 Lower end part 6 Insertion hole 7 Light reflection sheet 8 Upper end part 9 Lower part 10 Cylindrical body 11 Side wall part 12 Air hole 13 Circumferential groove 14 Longitudinal ridge (reinforcement) Rib) 15 All-round U-shaped strip lower end (flange) 16 All-round U-shaped strip lower end along the outer peripheral edge (projection) 20 Base main body 21 Base main body outer peripheral projection 22 Base 24 Bolt end Part 26 Cylindrical nut 28 Bolt 30 Retaining ring 31 Recessed groove 32 Locking edge 33 Inclined edge 34 Side surface circular hole Bent trough metal 34a Bent trough metal side part (inside) 34b Bent trough metal side part (outside) ) 34c Curved trough metal U-shaped left-right asymmetrical shape 36 Bolt hole 37 Recessed portion 38 Convex portion 39 Circular drill hole 39a Elliptical hole 40 Outer skin 41 Perforation R Road surface

Claims (4)

[Claims] 1. A road marking structure comprising a cylindrical body and a base body for holding the lower end of the cylindrical body in a detachable manner so that the cylindrical body stands upright on the road surface, wherein the cylindrical body is a soft elastomer. And a U-shaped strip-shaped lower end portion (flange portion) at the lower end of the cylindrical portion, and the base is a U-shaped strip-shaped lower end portion (flange portion) at the entire circumference of the cylindrical body. It consists of a soft elastomer base body that covers the bottom surface and a hard synthetic resin retaining ring that is detachably fitted to the outside of the base body, and is fixed to the road surface on the bottom surface of the central part of the base body. A nut or bolt for screwing with the bolt or nut is embedded and fixed in advance. The pressing ring covers the lower end portion (flange portion) of the U-shape around the entire circumference of the cylindrical body, and its outer peripheral edge Fit with ridges Road signs structure, characterized in that Tomeen is formed. 2. A plurality of side surface partial circular drilled bent gutter-shaped metals are integrally formed in advance on a lower end portion of a U-shaped strip around the lower end of a circular tubular body integrally formed with a base body of a cylindrical body. The road sign structure and the detachment prevention method according to claim 1. 3. The road sign structure according to claim 1 or 2, wherein a small sign body that can be inserted into and removed from the upper end of the cylindrical body is inserted. 4. A road sign structure comprising a cylindrical body and a base body for holding the lower end of the cylindrical body so that the cylindrical body stands upright on the road surface. 5. A road marking structure according to claim 1, wherein a heat-shrinkable synthetic resin tube is attached to form a skin.