JP3143070U - Concrete boundary block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a concrete boundary block provided with a reflecting member, which has high durability and can maintain visibility.
A concrete boundary block includes a concrete member and a reflecting member embedded in the concrete member. The reflecting member 11 includes a frame member 12 having a lattice-like through hole 12a, a translucent resin member 13 filled in the through hole 12a, and light incident on the resin member 13 embedded in the resin member 13. And a reflector 14 for reflecting the light. The reflecting member 11 is embedded in the concrete member 15 so that the surface 13a of the resin member 13 is exposed to the outside at substantially the same height as the upper surface 15a of the concrete member 15. Since the reflector 14 is embedded in the resin member 13, durability can be increased and visibility can be maintained as compared with a case where the reflection member is a road sign sheet.
[Selection] Figure 1

Description

The present invention relates to a concrete boundary block having a reflecting member that reflects light.

Conventionally, a concrete boundary block has been installed at the boundary between a roadway and a sidewalk, for example, in order to clarify the road traffic classification. Some concrete boundary blocks are provided with a reflector that reflects light from street lamps or vehicle headlamps on the surface in order to improve visibility and clearly indicate the position of the concrete boundary block. For example, Patent Document 1 discloses a concrete block in which a thermoplastic road sign sheet containing glass beads or the like is melted and adhered to the surface. Patent Document 2 discloses a road curb in which a raised convex part is formed on the upper surface of a curb body provided along the road, and a light reflecting plate is provided on a standing wall surface part of the raised convex part.
JP 2005-126896 A JP 2002-212912 A

However, in any of the above-described techniques, since the reflecting member is formed on the surface after the concrete block is manufactured, the strength and durability are low, and the visibility may be deteriorated due to peeling or the like. The technique described in Patent Document 1 has a problem that the road sign sheet is likely to be deteriorated due to changes in temperature, dirt due to wind and rain, and the durability is not high. Moreover, in the technique of patent document 2, since the light reflection board was formed in the protruding convex part protrudingly formed by the upper surface of the curb main body, there existed a problem that a light reflection board was easy to get dirty.

Therefore, an object of the present invention is to realize a concrete boundary block provided with a reflecting member that has high durability and can maintain visibility.

In order to achieve the above object, the present invention provides a concrete boundary block in which a reflecting member for reflecting light is embedded, wherein the reflecting member is a frame having lattice-like through holes. A member, a translucent resin member filled in the through hole of the frame member, and a reflector that is embedded in the resin member and reflects light incident on the resin member, the frame member The thickness of the wall portion forming the lattice-shaped through hole is formed so as to continuously decrease from one opening portion toward the other opening portion, and the reflection member is a wall of the frame member. The technical means that the side where the thickness of the part is thin is exposed to the outside is used.

According to the first aspect of the invention, since the reflector is embedded in the resin member filled in the through hole of the frame member, the durability is higher than when the reflective member is a road sign sheet. It is possible to maintain visibility. Further, the frame member is formed so that the plate thickness decreases from one opening portion of the through hole to the other opening portion, and the reflection member is exposed to the outside where the plate thickness of the frame member is thin. Since the outer peripheral surface of the frame member has a reverse taper shape in the concrete boundary block, the reflecting member is less likely to be detached from the concrete boundary block and the durability can be increased. , Visibility can be maintained. Further, since the resin member can be inserted and removed from the frame member, when the resin member is soiled, only the resin member can be replaced.

The invention according to claim 2 uses the technical means that in the concrete boundary block according to claim 1, the frame member is manufactured by cutting out from an FRP (fiber reinforced plastic) grating.

As described in claim 2, in the FRP (fiber reinforced plastic) grating, the thickness of the wall part forming the through hole is different from the one opening part to the other part for release in the manufacturing process. Since it is formed so as to continuously decrease toward the opening, it can be used as a frame member of the present invention. For example, FRP is a composite material of glass fiber and resin material, so it costs a lot to dispose of scraps and has a large environmental impact. The environmental load can be reduced.

According to a third aspect of the invention, in the concrete boundary block according to the first or second aspect, the technical means that the reflector is formed of a thin plate material is used.

According to the invention described in claim 3, since the reflector is made of a thin plate-like material, the area of the light reflecting surface can be increased, so that the concrete boundary block can be easily seen. Can do.

According to a fourth aspect of the invention, in the concrete boundary block according to the first or second aspect, the reflector uses a technical means in which a plurality of small pieces are dispersed in the resin member.

According to the fourth aspect of the present invention, the reflector made of small pieces can be dispersed and embedded in the resin member. Since the small piece is directed in a messy direction, the light incident on the resin member can be reflected in a wide range, so that the concrete boundary block can be easily seen regardless of the position of the light source. Here, the “small piece” includes a powdery material.

According to a fifth aspect of the invention, in the concrete boundary block according to the first or second aspect, the technical means that the reflector is made of a linear material is used.

As in the device described in claim 5, the reflector can be formed of a linear material.

The invention according to claim 6 uses the technical means that in the concrete boundary block according to claim 5, the reflector is formed in a cotton shape.

According to the sixth aspect of the present invention, since the surface of the reflector is in a messy direction, the light incident on the resin member can be reflected in a wide range. The block can be easily seen.

An embodiment of a concrete boundary block according to the present invention will be described with reference to the drawings, taking a concrete boundary block that partitions a sidewalk and a roadway as an example. The concrete boundary block is arranged so that the longitudinal direction thereof follows the boundary of the road, displays the boundary, and is used as an obstacle that partitions the sidewalk and the roadway. FIG. 1 is an explanatory view showing the structure of a concrete boundary block. FIG. 1A is a perspective view of a concrete boundary block as viewed from above, and FIG. 1B is a cross-sectional view taken along the line AA in FIG. FIG.2 and FIG.3 is sectional drawing which shows the manufacturing method of a concrete boundary block. FIG. 4 is a plan view of a concrete boundary block showing a modification example of the shape of the frame member as viewed from the upper surface side. In each figure, for the sake of explanation, a part is enlarged and a part is omitted.

As shown in FIGS. 1A and 1B, the concrete boundary block 10 includes a concrete member 15 and a reflecting member 11 embedded in the concrete member 15.

The concrete member 15 is formed in an elongated block shape having a substantially rectangular cross section, and the outer dimensions are, for example, a width of 120 to 180 mm, a height of 120 to 230 mm, and a length of 600 mm.

The reflecting member 11 includes a frame member 12 having a lattice-like through hole 12a, a translucent resin member 13 filled in the through hole 12a, and light incident on the resin member 13 embedded in the resin member 13. And a reflector 14 for reflecting the light. The reflecting member 11 is embedded in the concrete member 15 so that the surface 13a of the resin member 13 is exposed to the outside at substantially the same height as the upper surface 15a of the concrete member 15.

The frame member 12 is formed in a shape in which lattice-like through holes 12a are continuous in the longitudinal direction, and in the present embodiment, ten through holes 12a are provided. Moreover, in this embodiment, the frame member 12 is produced by cutting out from FRP grating. FRP grating is manufactured by laying a roving made of glass fiber in a mold provided with lattice-shaped filling grooves and pouring resin into the filling grooves. Here, in order to make it easy to release the solidified FRP from the mold, the filling groove is provided with an inclination that becomes narrower from the opening toward the bottom. Therefore, the FRP grating is formed so that the thickness of the wall portion continuously decreases from one opening portion of the through hole toward the other opening portion.

That is, the thickness of the wall portion 12b of the frame member 12 continuously decreases from one opening portion 12d of the through hole 12a toward the other opening portion 12e. Here, in this embodiment, the length of one side of the opening 12d is 33 mm, the length of one side of the opening 12e is 35 mm, the thickness of the wall 12b adjacent to the opening 12d is 7 mm, and the opening 12e. The thickness of the wall 12b adjacent to is 5 mm.

The frame member 12 is arranged inside the concrete member 15 so that the plate thickness on the upper surface 15a side is thin, that is, the opening 12e is exposed to the outside. Thereby, since the outer peripheral surface 12c of the frame member 12 becomes reversely tapered when viewed from the upper surface 15a side of the concrete member 15, the frame member 12 is not detached from the concrete member 15. Moreover, since the resin member 13 can be inserted and removed from the frame member 12, when the resin member 13 is soiled, only the resin member 13 can be replaced.

A resin member 13 and a reflector 14 are provided in the through holes 12a of the frame member 12, respectively. The resin member 13 is formed of a translucent resin, for example, an acrylic resin. Here, the resin member 13 only needs to have translucency, and can also be formed of an epoxy resin, a resin material with various colorings, or the like.

The reflector 14 is formed of a thin plate-like material that reflects light, for example, a metal foil such as an aluminum foil, and the surface 13a is slightly inward from the surface 13a of the resin member 13, for example, about 1 to 2 mm inward. Are embedded in the resin member 13 so as to be substantially parallel to each other.

According to the concrete boundary block 10 having such a configuration, the light incident on the resin member 13 can be reflected and emitted by the reflector 14, so that the concrete boundary block 10 can be easily seen. Since the reflector 14 is formed of a thin plate-like material, the area of the surface that reflects light can be increased, so that the concrete boundary block 10 can be easily seen.

Further, since the reflector 14 is embedded in the resin member 13 filled in the through hole 12a of the frame member 12, the durability can be increased compared to the case where the reflecting member is a road sign sheet. , Visibility can be maintained.

  A method for manufacturing the concrete boundary block 10 will be described. First, as shown in FIG. 2 (A), a frame member 12 cut out to a predetermined shape from FRP grating is prepared, and placed on a plate with the wall 12b facing the thin opening 12e. The resin 13b forming the resin member 13 is poured from the upper end to a height of about 2 mm.

Next, as shown in FIG. 2B, the reflector 14 is placed on the resin 13 b, the resin 13 b is filled up to the upper end of the frame member 12, and solidified to produce the reflecting member 11.

Subsequently, as shown in FIG. 3A, a box-shaped mold 20 having an opening at the top for molding the concrete member 15 is prepared, and the bottom of the mold 20 has a thin wall portion 12b. The reflecting member 11 is placed so that the opening 12e faces downward.

Then, as shown in FIG. 3B, the concrete boundary block 10 can be manufactured by pouring the concrete for producing the concrete member 15 into the mold 20, curing it, and removing it from the mold 20. .

(Example of change)
Irregular irregularities may be formed on the surface of the reflector 14. According to this, since the light incident on the resin member 13 is irregularly reflected at the uneven portion, the light can be reflected regardless of the direction of the light source, and thus the concrete boundary block 10 can be easily recognized.

The number and arrangement of the through-holes 12a of the frame member 12 are arbitrary. For example, the number may be one, or multiple rows, for example, two in the width direction and 10 in the longitudinal direction as shown in FIG. A total of 20 pieces can be provided. In addition, as shown in FIG. 4B, a design such as arranging the through holes 12a in a staggered manner can be applied.

In the present embodiment, the reflecting member 11 is embedded in the upper surface 15a of the concrete member 15, but it can also be embedded in the side surface to enhance the visibility of the side surface.

[Effect of Best Embodiment]
(1) Since the reflector 14 is embedded in the resin member 13 filled in the through hole 12a of the frame member 12, the durability can be increased compared to the case where the reflecting member is a road sign sheet. , Visibility can be maintained.
The frame member 12 is formed so that the plate thickness decreases from one opening 12d of the through hole 12a to the other opening 12e, and the reflection member 11 has a plate thickness of the frame member 12. Since the thin boundary is disposed in the concrete boundary block 10 so that the thin side is exposed to the outside, the outer peripheral surface 12c of the frame member 12 is reversely tapered in the concrete boundary block, so that the reflecting member 11 is detached from the concrete boundary block 10. It becomes difficult, durability can be made high, and visibility can be maintained. Moreover, since the resin member 13 can be inserted and removed from the frame member 12, when the resin member 13 is soiled, only the resin member 13 can be replaced.

(2) FRP (Fiber Reinforced Plastic) grating has a thickness of a wall part that forms a through hole continuously from one opening part to the other opening part for mold release in the manufacturing process. Since it forms so that it may reduce, it can be used suitably as the frame member 12 of this invention. For example, FRP is a composite material of glass fiber and resin material, so it costs a lot to dispose of scraps and has a large environmental impact. The environmental load can be reduced.

(3) Since the reflector 14 is formed of a thin plate-like material, the area of the light reflecting surface can be increased, so that the concrete boundary block 10 can be easily seen.

[Other Embodiments]
The shape of the reflector 14 is arbitrary as long as it can efficiently reflect the light incident on the resin member 13. FIG. 5 is a cross-sectional view showing a modified example of the reflector 14. For simplicity, only the resin member 13 and the reflector 14 are illustrated.

A plurality of small pieces may be dispersed in the resin member 13 as shown in FIG. Here, the reflector 14 is formed of a 2 mm square aluminum foil. Since the reflector 14 faces in a messy direction, the light incident on the resin member 13 can be reflected in a wide range, so that the concrete boundary block 10 can be easily seen regardless of the position of the light source. . Moreover, it is not limited to a foil-like small piece, For example, a granular member, a powdery member, etc. can also be used.

The reflector 14 can also be formed of a linear material. For example, as shown in FIG. 5B, the reflector 14 can be formed in a cotton shape such as steel wool. According to this, since the surface of the reflector 14 faces in a messy direction, the light incident on the resin member 13 can be reflected in a wide range, so that the concrete boundary block 10 is visually recognized regardless of the position of the light source. Can be easier.

It is explanatory drawing which shows the structure of a concrete boundary block. 1A is a perspective view of a concrete boundary block as viewed from above, and FIG. 1B is a cross-sectional view taken along the line AA in FIG. 1A. It is sectional drawing which shows the manufacturing method of a concrete boundary block. It is sectional drawing which shows the manufacturing method of a concrete boundary block. It is the top view which looked at the concrete boundary block which shows the example of a change of the shape of a frame member from the upper surface side. It is sectional drawing which shows the example of a change of a reflector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Concrete boundary block 11 Reflective member 12 Frame member 12a Through-hole 12b Wall part 12c Outer peripheral surface 12d Opening part 12e Opening part 13 Resin member 14 Reflector 15 Concrete member 15a Upper surface

Claims (6)

A concrete boundary block in which a reflecting member for reflecting light is embedded, wherein the reflecting member includes a frame member having a lattice-like through hole, and a translucent resin member filled in the through hole of the frame member And a reflector that is embedded in the resin member and reflects light incident on the resin member, and the frame member has a thickness of a wall portion that forms a lattice-shaped through hole, and the one opening portion. The reflection member is arranged so that the side where the thickness of the wall portion of the frame member is thin is exposed to the outside. The concrete boundary block according to claim 1. 2. The concrete boundary block according to claim 1, wherein the frame member is manufactured by cutting from an FRP (fiber reinforced plastic) grating. 3. 3. The concrete boundary block according to claim 1, wherein the reflecting member is made of a thin plate material. The concrete boundary block according to claim 1 or 2, wherein the reflector is formed by dispersing a plurality of small pieces in the resin member. The concrete boundary block according to claim 1, wherein the reflector is made of a linear material. The concrete boundary block according to claim 5, wherein the reflector is formed in a cotton shape.

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