Anti-glare plate

Abstract

To provide an anti-glare plate capable of stably maintaining an installation state by preventing large positional deviation in a longitudinal direction even when receiving the strong wind or the like.SOLUTION: An anti-glare plate includes a light shielding plate part and a support part for supporting the light shielding plate part, and the support part includes a contact part to be brought into contact with a side surface in the width direction of a block body of the guard fence and a connection part for connecting the contact parts arranged on both sides in the width direction, and at least a part of the connection part is disposed in a gap between the respective adjacent block bodies. Even if the anti-glare plate is slightly moved in the longitudinal direction by receiving a strong wind or the like, a large movement of the connection part is regulated by abutting on the block body or the like, and a large positional deviation of the anti-glare plate is prevented.SELECTED DRAWING: Figure 14

Description

Technical Field

[0001] The present invention relates to an anti-glare plate installed on a protective fence formed by arranging a plurality of block bodies made of concrete or the like side by side.

Background Art

[0002] Regarding protective fences installed between lanes or on the roadside, in addition to so-called guardrails equipped with plate-shaped beams and fences in which beams are installed between columns such as wire fences, a configuration formed by arranging a plurality of block bodies made of concrete or the like side by side is used. And various inventions have been published regarding methods for attaching roadside facilities to such protective fences.

[0003] For example, Patent Document 1 discloses a sign attachment tool for a concrete protective fence that sandwiches one side surface and the opposite side surface of a concrete protective fence to attach a sign. The attachment tool includes a fixed arm that contacts one side surface of the protective fence, a connecting arm welded to the fixed arm, a movable arm that is movably connected to the connecting arm via a support shaft and contacts the opposite side surface of the protective fence, a length adjustment means that is substantially parallel to the connecting arm and is movably connected to the fixed arm and the movable arm to adjust the distance between the fixed arm and the movable arm by a screw mechanism, and a sign support means arranged on the movable arm. A sign attachment tool for a concrete protective fence is described.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The sign mounting fixture for a concrete protective fence described in Patent Document 1 is provided to fix to the protective fence by sandwiching the protective fence with a fixed arm 2 and a movable arm 3 arranged in the width direction as shown in FIGS. 3, 5, etc., and stably support the sign. However, as a problem that may occur when receiving strong winds or the like exceeding assumptions, displacement in the longitudinal direction is conceivable.

[0006] The present invention provides an antiglare plate that can prevent a large displacement in the longitudinal direction even when receiving strong winds or the like and can stably maintain the installation state.

Means for Solving the Problems

[0007] To achieve the above object, the present invention has the following configuration. That is, the antiglare plate according to the present invention is an antiglare plate installed on a protective fence formed of a plurality of block bodies arranged in parallel in the longitudinal direction, and includes a light shielding plate portion and a support portion that supports the light shielding plate portion. The support portion includes a contact portion that contacts the side surface in the width direction of the block body, and a connecting portion that connects the respective contact portions arranged on both sides in the width direction, and at least a part of the connecting portion is provided so as to be arranged in a gap between the adjacent block bodies.

[0008] According to the antiglare plate of the present invention, since the support portion that supports the light shielding plate portion includes a contact portion that contacts the side surface in the width direction of the block body and a connecting portion that connects the respective contact portions arranged on both sides in the width direction, the both side surfaces of the block body can be sandwiched and attached by the respective contact portions, and the light shielding plate portion can be installed on the block body. In addition, since at least a part of the connecting portion is provided so as to be arranged in a gap between the adjacent block bodies, when the antiglare plate receives a force in the longitudinal direction due to the light shielding plate portion receiving strong winds exceeding assumptions or the like, even if the connecting portion slightly moves in the longitudinal direction within the gap, a large movement of the connecting portion exceeding the gap is restricted by contact with the block body or the like, and a large displacement of the antiglare plate is prevented.

[0009] Further, if it is provided so that substantially the entire connecting portion is disposed in the gap between the adjacent block bodies, the above-described effect of restricting the longitudinal movement exceeding the gap of the connecting portion can be obtained more efficiently, which is preferable.

[0010] Further, if the contact portion is installed between the adjacent block bodies so as to be in contact with each side surface of each block body, the glare prevention plate can be installed more stably on each block body, which is preferable.

[0011] Further, if the contact portion is provided with an engaging portion that is inserted inside a concave portion formed on the side surface of the block body and recessed inward, the vertical movement of the glare prevention plate is restricted by the engaging portion, and the glare prevention plate can be installed more stably on the block body, which is preferable.

Effect of the Invention

[0012] According to the glare prevention plate of the present invention, the installation state of the glare prevention plate attached to the block body constituting the protective fence can be stably maintained.

Brief Description of the Drawings

[0013]

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Embodiment for Carrying Out the Invention

[0014] The embodiments of the present invention will be specifically described based on the drawings. FIG. 1 is a front view showing one form of the block body 7, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a plan view of FIG. 1. The block body 7 is a concrete block formed in a substantially rectangular outer shape. The block body 7 includes a connection part 71a provided at one end in the longitudinal direction and a connection part 71b provided at the other end, and by connecting the connection part 71a to the connection part 71b of another block body 7, a plurality of block bodies 7 can be connected in the longitudinal direction and arranged side by side. In the following description, the left - right direction in the drawing of FIG. 1 is defined as the width direction, the up - down direction in the drawing perpendicular to the width direction is defined as the up - down direction, and the direction perpendicular to both the width direction and the up - down direction is defined as the longitudinal direction.

[0015] On the side surface in the width direction of the block body 7, a recess 72 that is recessed inward is formed. The recess 72 is formed in a groove shape with a substantially trapezoidal cross - section extending over the entire longitudinal length of the block body 7, and a bottom surface 72a corresponding to the bottom of the groove is formed in a planar shape throughout. Two recesses 72 are formed, one on each side in the width direction at the upper part of the block body 7, and the bottom surfaces 72a of the respective recesses 72 are arranged parallel to each other.

[0016] The connecting portion 71a is formed as a flat protruding piece protruding in the longitudinal direction, and two connecting portions 71a formed in the same shape are formed at intervals in the up - down direction. Each connecting portion 71a is formed with one circular through - hole H penetrating in the up - down direction. The connecting portion 71b is formed on a protruding piece formed in the same shape as each of the connecting portions 71a. The connecting portions 71b are formed in two at intervals in the up - down direction in the same manner as the connecting portions 71a, and each connecting portion 71b is arranged slightly below each of the connecting portions 71a and provided on the block body 7.

[0017] The block body 7 is provided so that a plurality of block bodies 7 are connected in the longitudinal direction via the connecting portions 71a and 71b and arranged side by side. FIG. 4 is a view showing a protective fence F formed by arranging the block bodies 7 of FIG. 1 side by side. The protective fence F is installed along the road on which the vehicle travels in the longitudinal direction to prevent the vehicle coming into contact from one side in the width direction from entering the other side. The protective fence F shown in FIG. 4 aligns the positions of the through - holes H of the connecting portions 71a and 71b of two block bodies 7 arranged in the longitudinal direction, and inserts a connecting member L formed in a rod shape with a circular cross - section into each through - hole H to connect each block body 7. As shown in Fig. 4, a gap S is formed between each block body 7 longitudinally connected at the upper part of the protective fence F. Specifically, the gap S is formed at the height position where the 72a of the recess 72 of each block body 7 is formed. Since the protective fence F connects each block body 7 via the connecting portions 71a and 71b, the longitudinal size of the gap S is not likely to vary greatly and is generally within a certain range.

[0018] Fig. 5 is a front view showing an embodiment of the glare prevention plate 1 of the present invention, Fig. 6 is a side view of Fig. 5, Fig. 7 is a plan view of Fig. 5, and Fig. 8 is an enlarged view of a part of Fig. 5 showing the mounting portion 20 of the glare prevention plate 1. The glare prevention plate 1 shown in Figs. 5 to 8 has a light shielding plate portion 10 and a support portion 2, and is provided such that a mounting portion 20 provided at the lower part of the support portion 2 that supports the light shielding plate portion 10 is attached to the protective fence F for installation. The light shielding plate portion 10 is provided in a flat plate shape with a checkerboard-like outer shape, and is formed of a laminated composite plate of an aluminum plate and a resin plate. The light shielding plate portion 10 is arranged such that both side plate surfaces thereof face in the longitudinal direction, and is provided such that when the mounting portion 20 is attached to the protective fence F for installation, each of the plate surfaces faces in the longitudinal direction of the protective fence F. The support portion 2 has the mounting portion 20 and a support column portion 21, and connects the light shielding plate portion 10 and the mounting portion 20 disposed below it with the support column portion 21. Specifically, the mounting portion 20 includes a substantially flat plate-shaped connecting portion 3, and the connecting portion 3 and the light shielding plate portion 10 are connected by the support column portion 21.

[0019] Fig. 9 is a sectional view taken along line A - A of Fig. 5. The support column portion 21 includes two column bodies 22. Each column body 22 is a long body made of an aluminum extrusion profile that is long in the vertical direction, and has the same cross-sectional shape throughout its entire length. Each column body 22 is brought into contact with both sides in the longitudinal direction so as to sandwich the light shielding plate portion 10, and a nut is fastened to a bolt B1 that penetrates in the longitudinal direction, and the support column portion 21 composed of each column body 22 is attached to the light shielding plate portion 10.

[0020] As shown in FIGS. 5 to 8, the mounting portion 20 of the support portion 2 includes a connecting portion 3 and contact portions 4 disposed on both sides in the width direction of the connecting portion 3. The connecting portion 3 includes a substantially flat plate-shaped substrate portion 31, and the plate surfaces on both sides of the substrate portion 31 are arranged facing the longitudinal direction. On both sides in the width direction of the substrate portion 31, a total of two connecting portions 32 are formed, each of which bends vertically from the substrate portion 31 in the longitudinal direction and extends. Each connecting portion 32 is formed in a substantially rectangular protruding piece shape, and is provided so as to protrude in the opposite direction of the longitudinal direction.

[0021] Each of the connecting portions 32 is provided with a female screw portion 32a to which a bolt B2 can be screwed from the outside in the width direction. The female screw portion 32a is formed by a nut fixed to the plate surface of the connecting portion 32 by welding, and two female screw portions 32a are formed in a set at intervals in the vertical direction for each connecting portion 32. That is, a total of two sets of four female screw portions 32a are formed in the connecting portion 3, one set for each of the connecting portions 32 on both sides in the width direction.

[0022] The contact portion 4 is formed in a substantially U-shaped outer shape including a substantially rectangular flat base portion 41 and reinforcing rib portions 42 that bend vertically from both ends in the vertical direction of the base portion 41 and extend in the width direction. By forming each reinforcing rib portion 42, the rigidity of the contact portion 4 is increased. The contact portion 4 is arranged with each reinforcing rib portion 42 facing the outside in the width direction, and one contact portion 4 is arranged on each side in the width direction of the connecting portion 3 and attached to each of the connecting portions 32. Further, as shown in FIGS. 6 and 7, in the state of being attached to the connecting portion 3, the base portion 41 and the reinforcing rib portions 42 of each contact portion 4 are arranged so as to protrude from both sides in the longitudinal direction of the connecting portion 3.

[0023] FIG. 10 is a cross-sectional view taken along line B-B of FIG. 5. As shown in FIG. 10, the connecting portion 3 is attached to the support column portion 21 in the same manner as the light shielding plate portion 10. That is, the support column portion 21 arranges the respective column bodies 22 on both sides in the longitudinal direction so as to sandwich the substantially flat plate-shaped substrate portion 31, and a nut is screwed to a bolt B1 penetrating the column bodies 22 in the longitudinal direction to attach to the connecting portion 3.

[0024] Further, as shown in FIG. 10, each of the contact portions 4 is attached to the connecting portion 3 by a bolt B2 inserted through a base portion 41. Specifically, each contact portion 4 screws the bolt B2 inserted through the base portion 41 into a female screw portion 32a, and is attached to each of the connecting portions 32 of the connecting portion 3. That is, each contact portion 4 can be removed from the connecting portion 3 by unscrewing the bolt B2 from the female screw portion 32a. FIG. 11 is a view showing a state where the contact portion 4 is removed from the connecting portion 3 of FIG. 8. FIG. 11 shows a state where the bolts B2 are unscrewed from the female screw portions 32a and the contact portions 4 are removed from the connecting portions 32.

[0025] The antiglare plate 1 shown in FIGS. 5 to 8 is provided such that each contact portion 4 of the mounting portion 20 is brought into contact with a block body 7 of the protective fence F for installation. FIG. 12 is a view showing a state before the antiglare plate 1 is attached to the protective fence F of FIG. 4. In the antiglare plate 1 shown in FIG. 12, among the two connecting portions 32 provided in the connecting portion 3, the contact portion 4 is attached to the connecting portion 32 on the right side (not shown) in the figure, and the contact portion 4 is removed from the connecting portion 32 on the left side in the figure. The antiglare plate 1 is provided to be attached by bringing the contact portion 4 into contact with the block body 7. The connecting portion 3 is inserted into the gap S between the block bodies 7 arranged in parallel in the longitudinal direction from the outer side in the width direction, and the contact portion 4 attached to the connecting portion 3 is brought into contact with the side surface of the block body 7.

[0026] FIG. 13 is a view showing a state in which the glare prevention plate 1 is brought into contact with the protective fence F of FIG. 12. The glare prevention plate 1 shown in FIG. 13 houses substantially the entire connecting portion 3 and the lower portion of the support column portion 21 in the gap S between the respective block bodies 7 arranged side by side in the longitudinal direction. Further, the contact portion 4 on the right side in the figure is in contact with the bottom surfaces 72a of the concave portions 72 of the respective block bodies 7 located on both sides of the gap S with the plate surface of the base portion 41. As shown in FIG. 13, the connecting portion 3 is formed such that the connecting portion 32 on the other side is disposed in the vicinity of the bottom surface 72a of the concave portion 72 on the other side in a state where the contact portion 4 attached to the connecting portion 32 on one side in the width direction is in contact with the bottom surface 72a of the concave portion 72. Specifically, the distance between the plate surfaces on the outer side in the width direction of each connecting portion 32 is formed to be slightly smaller than the distance between the respective bottom surfaces 72a of the block body 7. The glare prevention plate 1 is provided such that the contact portion 4 is attached to the connecting portion 32 of the connecting portion 3 disposed on the left side in the figure of FIG. 13, and the block body 7 is sandwiched by each contact portion 4 and installed on the protective fence F.

[0027] FIG. 14 is a view showing a state in which the glare prevention plate 1 is installed on the protective fence F of FIG. 13, and FIG. 15 is a side view of the glare prevention plate 1 of FIG. 14. In FIG. 15, the entire glare prevention plate 1 is shown. The glare prevention plate 1 shown in FIGS. 14 and 15 shows a state in which the male screw of the bolt B2 inserted through the base portion 41 is screwed into the female screw portion 32a of the connecting portion 32 on the left side in the figure of FIG. 13, and the contact portion 4 is attached to the connecting portion 3. As shown in FIG. 14, the glare prevention plate 1 has the plate surfaces of the base portions 41 of the respective contact portions 4 arranged on both sides in the width direction in contact with the bottom surfaces 72a of the concave portions 72 of the block body 7, and the block body 7 is sandwiched by each contact portion 4 and installed on the protective fence F. Further, as shown in FIG. 15, the glare prevention plate 1 has the base portions 41 of the respective contact portions 4 in contact with the bottom surfaces 72a of the respective block bodies 7 arranged side by side in the longitudinal direction, and is installed on the protective fence F. In other words, the glare prevention plate 1 is brought into contact with and attached so as to be installed on two block bodies 7 in which the respective contact portions 4 are arranged side by side in the longitudinal direction.

[0028] The anti-glare plate 1 shown in FIGS. 14 and 15 has each contact portion 4 that sandwiches the block body 7 placed in contact with the bottom surface 72a of the recess 72 formed in the block body 7. In other words, each contact portion 4 is inserted inside the recess 72, and each contact portion 4 is engaged with each recess 72. By installing the anti-glare plate 1 by engaging each contact portion 4 with each recess 72 in this way, when the anti-glare plate 1 receives a force in the vertical direction, each contact portion 4 contacts the upper or lower wall surface of the groove-shaped recess 72 and its movement is restricted. Therefore, the anti-glare plate 1 can be effectively prevented from detaching from the protective fence F. Further, the anti-glare plate 1 is provided so as to function as an engaging portion that inserts and engages substantially the entire portion of each contact portion 4 that contacts the block body 7 inside the recess 72, and can more effectively prevent detachment from the protective fence F.

[0029] Also, the anti-glare plate 1 shown in FIGS. 14 and 15 has each contact portion 4 that sandwiches the block body 7 attached to the connecting portion 3 via the bolt B2, and each contact portion 4 is strongly pressed against the block body 7 by tightening the bolt B2. The anti-glare plate 1 installed in this way is firmly attached to the block body 7. However, as a crisis situation that can be assumed in a large-scale disaster such as the occurrence of an extremely large typhoon, the anti-glare plate 1 may move in the longitudinal direction due to the light shielding plate portion 10 receiving a wind stronger than expected. However, even when the anti-glare plate 1 moves in the longitudinal direction, the support portion 21 and the connecting portion 3 of the mounting portion 20 arranged in the gap S contact the end of the block body 7. Therefore, a large displacement exceeding the range within the gap S of the connecting portion 3 is restricted, and detachment from the protective fence F can be effectively prevented.

[0030] In the method of attaching the glare prevention plate 1 shown in FIGS. 12 to 15, the contact portion 4 on the left side in the figure is removed from the connecting portion 3, and the glare prevention plate 1 is inserted into the gap S from the right side in the figure of the guard fence F and installed. However, the glare prevention plate 1 can also be installed from the opposite side. That is, the contact portion 4 on the right side in the figure is removed from the connecting portion 3, and the glare prevention plate 1 can be inserted into the gap S from the left side of the guard fence F and installed. Since the glare prevention plate 1 can be installed from either side in the width direction with respect to the guard fence F in this way, the degree of freedom in the installation work of the glare prevention plate 1 is increased.

[0031] FIG. 16 is a front view showing another embodiment of the glare prevention plate 1 of the present invention, FIG. 17 is a right side view of FIG. 16, FIG. 18 is a rear view of FIG. 16, FIG. 19 is a plan view of FIG. 16, and FIG. 20 is an enlarged view of a part of FIG. 16 showing the attachment portion 20 of the glare prevention plate 1. The glare prevention plate 1 shown in FIGS. 16 to 20 has a light-shielding plate portion 10 made of FRP formed in a substantially rectangular plate shape and a support portion 2, and an attachment portion 20 is provided at the lower part of the support portion 2 that supports the light-shielding plate portion 10. The support portion 2 has the attachment portion 20 and a support column portion 21, and connects the light-shielding plate portion 10 and the connecting portion 3 of the attachment portion 20 disposed below it with two support column portions 21. Each support column portion 21 has its upper part buried and fixed inside the light-shielding plate portion 10.

[0032] As shown in FIGS. 16 to 20, the attachment portion 20 of the support portion 2 includes a connecting portion 3 and contact portions 4 disposed on both sides in the width direction of the connecting portion 3. The connecting portion 3 includes a substantially flat substrate portion 31, and connection portions 32 that are bent and extended in the longitudinal direction are formed on both sides in the width direction thereof. Each connection portion 32 is formed in a substantially rectangular protruding piece shape that protrudes in the same direction in the longitudinal direction, and a female screw portion 32a into which a bolt B2 can be screwed is provided from the outside in the width direction. The female screw portions 32a are formed in a set of two at intervals in the vertical direction, and a total of two sets of four female screw portions 32a are formed in the connecting portion 3.

[0033] The contact portion 4 is formed with an outer shape that is substantially U-shaped in cross section, and includes a base portion 41 having a substantially rectangular flat plate shape, and reinforcing rib portions 42 that are bent vertically from both ends in the vertical direction of the base portion 41 and extend perpendicularly in the width direction. The contact portions 4 are arranged one by one on both sides in the width direction of the connecting portion 3 and attached to the respective connecting portions 32, with the respective reinforcing rib portions 42 facing outward in the width direction, similar to the respective contact portions 4 of the anti-glare plate 1 shown in FIGS. 5 to 8. In the state where each contact portion 4 is attached to the connecting portion 3, the base portion 41 and the reinforcing rib portions 42 of each contact portion 4 are arranged so as to protrude from both sides in the longitudinal direction of the connecting portion 3.

[0034] FIG. 21 is a cross-sectional view taken along line A-A of FIG. 16. Each of the support portions 21 abuts against the substrate portion 31 of the connecting portion 3 and is attached to the connecting portion 3 by screwing a nut onto a bolt B1 that penetrates in the longitudinal direction. In addition, a notch portion 40 is formed near the center in the longitudinal direction in each contact portion 4. The notch portion 40 is formed so as to notch a part of the base portion 41 and each reinforcing rib portion 42, and the end portion of the support portion 21 is provided so as to be housed inside this notch portion 40.

[0035] Each contact portion 4 is attached to the connecting portion 3 by screwing a bolt B2 inserted through the base portion 41 into the female screw portion 32a of the connecting portion 32. That is, each contact portion 4 can be removed from the connecting portion 3 by unscrewing the bolt B2 from the female screw portion 32a, similar to the respective contact portions 4 of the anti-glare plate 1 shown in FIGS. 5 to 8. FIG. 22 is a view showing a state in which the contact portion 4 is removed from the connecting portion 3 of FIG. 20. The anti-glare plate 1 shown in FIGS. 16 to 20 can be attached to the block body 7 in the same procedure as the installation method of the anti-glare plate 1 shown in FIGS. 12 to 15 and installed on the protective fence F, similar to the anti-glare plate 1 shown in FIGS. 5 to 8.

[0036] Note that the anti-glare plate 1 according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, as shown in FIGS. 14 and 15, each of the glare prevention plates 1 has substantially the entire contact portion 4 that abuts against the side surface of the block body 7 inserted inside the recess 72 of the block body 7 as an engaging portion, but it is not limited thereto. A part of the contact portion 4 may be inserted inside the recess 72 as an engaging portion to restrict the vertical movement of the glare prevention plate 1.

[0037] Also, each of the glare prevention plates 1 is arranged to accommodate substantially the entire connecting portion 3 in the gap S between the block bodies 7, but it is not limited thereto. A part of the connecting portion may be arranged to be accommodated in the gap S to prevent a large displacement of each glare prevention plate 1 in the longitudinal direction.

Explanation of Reference Numerals

[0038] 1 Glare prevention plate 10 Light shielding plate portion 2 Support portion 20 Mounting portion 21 Support column portion 22 Column body 3 Connecting portion 31 Substrate portion 32 Connection portion 4 Contact portion 41 Base portion 40 Notch portion 42 Reinforcing rib portion 7 Block body F Guardrail 71a Connecting portion 71b Connecting portion 72 Recess L Connecting member S Gap

Claims

1. A glare prevention plate installed on a protective fence formed of a plurality of block bodies arranged side by side in the longitudinal direction, comprising a light-shielding plate portion and a support portion for supporting the light-shielding plate portion, The support portion includes a contact portion that contacts the side surface in the width direction of the block body, and a connecting portion that connects the respective contact portions arranged on both sides in the width direction, and at least a part of the connecting portion is provided so as to be disposed in a gap between the adjacent block bodies. The glare prevention plate is characterized by this.

2. The glare prevention plate according to claim 1, wherein substantially the entire connecting portion is provided so as to be disposed in a gap between the adjacent block bodies.

3. The contact portion is provided so as to be erected between the adjacent block bodies and contact each side surface of the block bodies respectively. The glare prevention plate according to claim 1 is characterized by this.

4. The contact portion includes an engaging portion that is inserted into an inner side of a recess formed on the side surface of the block body and recessed inward. The glare prevention plate according to any one of claims 1 to 3 is characterized by this.

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