JP3521154B2 - Buried object information visual indicator and method of displaying embedded object information - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for visually recognizing information about an underground buried object from the ground. In particular, it relates to a technique for displaying the buried position of a communication cable or the like buried under the road.

[0002]

2. Description of the Related Art When performing construction on a road provided with asphalt pavement or the like, excavation work is performed after the pavement at the construction site is cut with a cutter and the pavement is peeled off. On the other hand, there are cases where communication cables and other public structures are buried underground in the road. If information about the buried objects is not known during construction, those structures may be accidentally cut or destroyed. Even when it is known in advance whether or not there is a buried object, especially in the case of a large number of buried objects such as telephone cables,
If you do not know the exact position and information about the number, you cannot prevent a cutting accident.

In order to prevent these accidents, it is impossible to accurately grasp the position of the buried object if the work is carried out based on the drawings when the buried object is constructed. Therefore, the position of the buried object has been displayed by sticking a metal plate on which a letter is engraved or pasting it on the road or by bolting. Alternatively, a method of driving by displaying a metal tack having a height of about 5 to 7 mm has been adopted.

[0004]

However, since these display signs are protrusions on the road, the description on the surface disappears due to wear or the sign itself immediately disappears in high traffic areas. It peels off and loses its effect as a sign. If these metal plates and tacks are peeled off, they will not be useful as signs,
It was also the cause of the flat tire accident of a car tire.

Further, the size of these signs is limited in view of the obstacles to the passage. Therefore, the visibility is very low, and the amount of information that can be recorded in the visibility is limited.

In view of the above problems, the present invention has been made in order to provide an underground buried object information display sign at a low cost, which does not peel off and disappear even on a road having a large traffic volume and does not lose visibility. It is a thing. Further, the present invention provides a method of displaying information about a telephone cable or the like buried underground in a road accurately and visually recognizable from the ground.

[0007]

In order to solve the above-mentioned problems, the sign of the present invention is a sign to be installed on the ground surface for displaying information about underground buried objects, and the sign body is made of a transparent body. Become. It is characterized in that it has a mark on which the above information is written on the bottom side of the sign body. Here, the bottom side refers to a portion other than the flat surface (upper bottom surface) of the marker body that is a transparent body. The number of marks in which the above information is written may be one or plural. The mark may be displayed by sticking a label on which the mark is printed to the bottom surface, or by enclosing and molding the label inside the transparent body. Alternatively, the surface of the transparent body may be directly mirror-finished or may be engraved. It is even better if the abrasion resistance of the transparent body is equal to or less than that of the pavement member on the road surface on which the sign is installed. Further, this transparent body may be made of a material that absorbs ultraviolet rays, or may be a mixture of a material that absorbs ultraviolet rays.

Further, the sign of the present invention is a sign to be installed on the ground surface in order to display the information regarding the underground buried object, and is a stack of a plurality of sign segments. Each labeled body is made of a transparent body, and each labeled body has a mark in which the above information is described.

On the other hand, according to the method of displaying the information on the underground buried object of the road of the present invention, in order to embed any one of the above-mentioned signs, a hole corresponding to this is excavated on the road surface, and one of the above-mentioned holes is formed in the hole. By inserting a sign so that the sign does not protrude from the road surface, accidents such as cable cutting during road construction can be prevented.

Alternatively, the information display method of the present invention is characterized in that, in the information display method described above, the transparent body has a wear resistance strength equal to or less than that of a member on a road pavement surface.

[0011]

According to the sign of the present invention, even if the transparent portion of the sign body is abraded along with the pavement of the road surface due to the passage of an automobile, the mark itself is not scraped and the visibility is not lost. Further, when a plurality of marks are enclosed at a predetermined position in the transparent body, even if one mark is worn out by friction, another mark appears. Further, if the material of the transparent body has a wear resistance strength equal to or less than that of the pavement member on the road surface on which the sign is installed, the sign is also worn along with the wear of the road paving surface, Does not stick out. Further, when the transparent body is made of a material that absorbs ultraviolet rays or contains the same, the fading of the marks due to ultraviolet rays is prevented.

Further, in the above-mentioned sign, the one in which a plurality of sign segments are laminated is reduced in the depth from the sign plane to the mark, and the visibility is improved. In addition, a new mark appears with the consumption.

On the other hand, according to the method of displaying the information about the buried object of the present invention, the sign can be kept on the same plane as the road paving surface, and the information is displayed without forming a projection that obstructs passage.

Further, in the display method of the present invention, if the material of the transparent body forming the sign has a wear resistance strength equal to or less than that of the material of the road pavement surface, the road pavement surface is worn out. The signs are also worn away and consumed. Therefore, the road surface can be kept flat without any protrusion.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a first embodiment of the sign of the invention. FIG. 1a shows the appearance of the sign according to the embodiment. In the figure, 1 is a mark and 2 is an identification mark. FIG. 1 b shows the components that make up the marker 1. In the figure, 3 is a transparent body, 4 is a double-sided adhesive seal, 5 is a print seal, and 6 is a protective seal.

The mark 2 is a mark representing information on the underground buried object, and a symbol is used in the embodiment (see FIG. 3a). The information on the underground buried object includes various information such as the position, quantity, and shape of the buried object.

The transparent body 3 is a cylindrical mass made of colorless and transparent polycarbonate resin. Bottom and plane (upper bottom)
Has a diameter of 26 mm and a height of 20 mm. Adhesive seal 4
Is a circularly cut polyester film having a diameter of 26 mm, and has acrylic adhesive applied on both sides. The print sticker 5 is a waterproof paper on which the mark 2 is silk-printed. The protective seal 6 is a circular polyester film having a diameter of 26 mm, and an acrylic adhesive is applied only on the upper surface. In this embodiment, the adhesive label 4, the printing label 5, and the protective label 6 are bonded together to form a mark label 7, and the mark label 7 is attached to the bottom surface of the transparent body 3 to form the mark 1.

The sign 1 can be installed at any place for displaying information on the underground buried object, but is most effective when used in the information display method described later according to the present invention.

In the present embodiment, the mark 2 in which information is written is provided on the bottom surface of the transparent body. However, this does not necessarily have to be on the bottom surface, and may be provided on any place other than the plane (upper bottom surface) of the transparent body 3. However,
As will be described later, when the sign 1 is embedded in the road surface and used, if the mark is on the bottom surface, the sign 1
Even if there is wear, it can be used continuously without being affected most.

FIG. 2 shows a second embodiment of the sign of the invention. FIG. 2a is a conceptual diagram showing the appearance of a sign according to the second embodiment. In the figure, 11 is a sign and 2 is an identification mark. FIG. 2 b represents each label segment 13 that constitutes the label 11.

The mark 2 is a mark representing information about an underground buried object as in the first embodiment, and a symbol is used in the embodiment.

FIG. 3 shows the shape of the labeled segment of this embodiment. FIG. 3a is a plan view of the marker segment 13, and 3b is a side view. The marker segment 13 is made of a colorless and transparent polycarbonate resin cylindrical mass. The bottom surface and the flat surface (upper bottom surface) have a diameter of 28 mm and a height of 5 mm, and the flat surface is provided with a recess 14 having a diameter of 26 mm and a depth of 2 mm.
A convex portion 15 having a diameter of 26 mm and a height of 1 mm is provided on the bottom surface, and the concave portion 14 of each division body 13 has a convex portion 15 of another division body.
Can be fitted. The mark label 7 is attached to the bottom convex portion 15 of each marker body 13 to form the marker body 13. The mark label 7 is formed by adhering the adhesive seal 4, the print seal 5 and the protective seal 6 as in the first embodiment. The four marker segments 13 shown in FIG.
I am trying.

The sign 11 can be installed at any place to display the information about the underground buried object, but it is most effective when used in the information display method described later according to the present invention. That is, when the sign 11 is embedded in the road surface and used, the depth from the sign plane (upper bottom surface) to the mark is 5 mm at the maximum. The depth is further reduced as the sign 11 is worn due to the passage of vehicles.

In the present embodiment, the mark 2 in which information is written is provided on the bottom surface of the marker segment 13. But,
This does not necessarily have to be on the bottom surface, and may be provided at any location on the marker segment 13 made of a transparent body. However, when using the sign 11 embedded in the road surface as described later, if the mark is on the bottom surface, even if the sign 11 is worn by a vehicle, it should be used without being affected most. You can

In the present embodiment, the plurality of marks 2 are all the same, but the marks 11 themselves are different by using different marks depending on each layer of the plurality of marker segments, or by adding additional marks. It is also possible to indicate the degree of wear.

FIGS. 4 and 5 show an embodiment of the method for displaying the information about the buried object according to the present invention. In the present embodiment, a case will be described in which the position of the telephone communication cable buried in the underground of the road vehicle portion where the cable disconnection accident and the like frequently occur is displayed.

FIG. 4 is a perspective view showing the outline of the buried object information display method of the present invention. The figure shows the inside of the sign and the communication cable that is the buried object, so that the ground is shown in a partially cutaway cross section. In the figure, 21 is a sign, 22 is asphalt, 2
3 is earth and sand, 24 is a communication cable, and 25 is a conduit for holding the cable, which is shown in a cutaway cross section.
Reference numeral 26 is a hole having a size corresponding to the mark 21, and shows a state in which the mark 21 is not yet fitted.

The marker 21 is formed by stacking four layers of marker segments made of a transparent body made of polypropylene. Each of the divided bodies is the same as the mark 11 shown in the second embodiment except that the material of the transparent body is different, such as having the mark 2 on the bottom surface. Although polypropylene is used as the material of the transparent body, it has relatively low hardness, but its hardness is relatively low, it wears as the asphalt wears, and the friction coefficient (against tires and rubber) is high. This is because it is unlikely to become an obstacle to.

The work is performed after the cable burying work is completed and the asphalt pavement is completely solidified. First, a hole 26 having a size corresponding to the mark 21 is drilled on the asphalt surface. The holes 26 are drilled with a drill having a diameter slightly larger than the bottom diameter of the marker 21 in consideration of the injection amount of the adhesive material.

Next, after pouring water into the hole 26 to clean the inside, dust and water are removed by a jet blower. When the inside of the hole 26 is dried, the adhesive 27 is injected. Here, a polysulfide sealing material was used as the adhesive. The marker 21 is pushed into the hole 26 into which the adhesive is injected, and the adhesive 2
The construction is completed by waiting for 7 to dry.

FIG. 5 is a view showing a vertical cross section of the sign 21 fitted on the ground surface. The figure shows a state after a considerable period of time has passed after the completion of construction and the surface of the asphalt 22 and the surface of the sign 21 have already been scraped off to some extent. The dotted line shows the surface of the ground and the surface of the sign 21 at the time of completion of construction.

The depth from the ground surface to the mark 2A is already as short as about 3 mm in the state shown in the figure. If the sign 21 is worn away along with the road surface as it is, the first mark 2A will eventually be scraped off, but the second mark 2B will appear. Similarly, a new mark appears every time the mark is cut, but at that time, the depth from the ground surface to the mark 2 is as short as 5 mm at the maximum. Therefore, even if a material having a relatively low transparency such as polypropylene is used, the visibility of the mark from the ground surface is not impaired.

In FIG. 5, what is indicated by an arrow line is a visible angle of the sign. It can be seen that when the mark 2 is at a deep position from the surface of the ground (see the mark 1 in the first embodiment), the angle for identifying it becomes deeper and the visible range from the ground surface becomes narrower.

In this embodiment, the case where the information display method of the present invention is applied to an asphalt pavement is shown, but the use of the present invention is not limited to the asphalt pavement, and concrete pavement and other roads and It can also be applied to other structures. Further, in this embodiment, polypropylene was used as the material of the transparent body, but according to the hardness of the road surface to be applied and other conditions,
Various materials can be used.

Further, in the present embodiment, the mark merely indicates the buried position of the telephone cable, but the symbol itself may give the thickness of the cable, the laying direction, the number of laying lines and other information. Alternatively, information may be displayed by writing characters in the mark.

[0036]

EFFECTS OF THE INVENTION Since the sign of the present invention has a mark on the inside or bottom of the transparent body that describes various information regarding the buried object, when the sign is fitted on the road paving surface, the mark can be easily confirmed from the ground. , You can get information about buried objects. Further, even if the plane (upper bottom surface) portion of the sign body is worn by the passage of an automobile, the mark still inside or on the bottom surface of the transparent body can be identified. As a result, at the time of road construction or the like, it is possible to accurately display information on the underground buried object to the worker, and prevent a telephone cable disconnection accident or the like. Further, in the sign of the present invention, the material of the transparent body has a hardness equal to or less than the material of the road pavement surface on which the sign is to be installed, and the abrasion resistance strength is equal to or less than the pavement surface. Even if the car wears, it does not cause the situation where only the sign is left on the road and protrudes. Further, when the transparent body is made of a material which is opaque to ultraviolet rays or contains a material which is opaque to ultraviolet rays, the mark is prevented from fading due to solar radiation.

The marker of the present invention, which is formed by stacking a plurality of marker segments each having a mark, has a small depth from the plane to the mark, and has a higher visibility. For this reason, it is possible to describe detailed information such as characters. On the other hand, even if the transparency used is low, the mark can be visually recognized. Therefore, the material of the transparent body is not limited to a member having high transparency, and the material of the transparent body can be selected from among various materials depending on the material of the road paving surface and other conditions.

According to the method for displaying the information on the buried object of the present invention, the information on the buried object can be visually displayed without forming an obstacle on the same road, thereby preventing a cable cutting accident or the like. be able to.

Further, in the above method of the present invention, when the material of the transparent body has a wear resistance strength equal to or less than that of the material of the road pavement surface, even if the pavement surface is worn, only the sign remains and the road surface remains. It doesn't cause the situation to stick out. This makes it possible to realize maintenance-free operation after the sign is installed.

[Brief description of drawings]

FIG. 1 is a diagram showing a sign according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a sign according to a second embodiment of the present invention.

FIG. 3 is a diagram showing details of a labeled segment according to a second example of the present invention.

FIG. 4 is a diagram showing a method of displaying information about an embedded object of the present invention.

5 is a diagram showing the visibility of marks in the information display method shown in FIG.

[Explanation of symbols]

1, 11, 21 signs 2 mark 3 transparent body 4 adhesive seal 5 printing stickers 6 Protective seal 7 mark label 13 Labeled division 14 recess 15 convex 22 pavement 23 earth and sand 24 telephone cable 25 pipelines 26 holes 27 Adhesive

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Claims (3)

(57) [Claims] 1. A sign to be installed on the surface of the earth for displaying information about an underground buried object, comprising a plurality of marker bodies stacked, each marker body being a transparent body, and each marker body being transparent. The marker having a mark on which the above-mentioned information is recorded. 2. A method of displaying information about underground buried objects of a road, comprising: excavating a hole corresponding to the sign of claim 1 on a road surface, and inserting the sign of claim 1 into the hole. How to display the characteristic buried object information. 3. The information display method according to claim 2, wherein
The information display method, wherein the transparent body has a wear resistance strength equal to or less than that of a member on a road pavement surface.