Reverse running prevention device

Abstract

To provide a reverse run preventing device which is not required to be buried in the road.SOLUTION: A reverse run preventing device comprises a base plate, a flap plate, a cushioning material, and a reinforcing material. The flap plate is connected to the base plate at an entrance side end part of a one-way road, and is not connected to the base plate at an exit side end part of the one-way road. The cushioning material and the reinforcing material are provided between the base plate and the flap plate. A road surface facing surface of the flap plate curves toward the exit side end part from the entrance side end part. The cushioning material supports the road surface facing surface by elastic force. The reinforcing material is provided closer to the exit side of the one-way road than the cushioning material. When vehicle load is not applied to the flap plate, the exit side end part of the flap plate is positioned at a predetermined height, and the top part of the reinforcing material is positioned below a support part of the flap plate in the cushioning material. When the vehicle load is applied, a part of the road surface facing surface is in contact with the top part of the reinforcing material, and the road surface facing surface is supported by the cushioning material and the reinforcing material.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a device for preventing a vehicle from running in the wrong direction. [Background technology]

[0002] Japanese Patent No. 5665119 discloses a device for preventing vehicles from running in the wrong direction. This conventional device includes a flap plate, a drive device, a display device, and a measurement sensor. The flap plate has a substantially rectangular shape, with one of a pair of ends fixed to the road surface and the other configured to be liftable. The drive device includes an elastic body such as a spring or rubber, and lifts the movable end of the flap plate. The display device displays information to alert vehicles running in the wrong direction on the surface of the flap plate facing the road surface. The measurement sensor measures the height of the vehicle (vehicle height).

[0003] The drive device adjusts the elasticity of the elastic body in accordance with the vehicle height measured by the measurement sensor. By adjusting the elasticity, the height of the movable end of the flap plate is changed. Therefore, under normal circumstances, the road-facing surface is raised to display warning information thereon, and when a vehicle approaches, the road-facing surface is lowered to prevent the movable end of the flap plate from colliding with the vehicle body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5665119 [Patent Document 2] JP 2017-066682 A Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned conventional device is installed entirely on the road surface. However, it is clear that to prevent damage to the precision equipment (specifically, the display device and drive unit) caused by the load of vehicles passing by, the precision equipment must be buried in the road. The fact that part of the device must be buried in the road means that there is room for improvement in terms of the cost required for installing the device and in terms of regular maintenance after installation.

[0006] One object of the present invention is to provide a reverse-running prevention device that does not need to be buried in the road. [Means for solving the problem]

[0007] The present invention is a reverse-running prevention device that is installed on the road surface of a one-way street. The reverse running prevention device includes a substantially rectangular base plate, a flap plate, a shock absorbing material, and a reinforcing material. The flap plate is connected to the base plate at an end portion on an entrance side of the one-way passage, and the flap plate is not connected to the base plate at an end portion on an exit side of the one-way passage. The cushioning material and the reinforcing material are provided between the base plate and the flap plate. The road surface-facing surface of the flap is curved from the entrance end toward the exit end. The cushioning material supports the road surface-facing surface by elastic force. The reinforcing material is provided closer to the outlet side than the buffer material. When no vehicle load is applied to the flap, the end of the flap on the outlet side is located at a predetermined height, and the top of the reinforcing material is located below the support portion of the cushioning material for the flap. When the vehicle load is applied to the flap plate, a part of the road surface-facing surface comes into contact with the top portion, and the road surface-facing surface is supported by the buffer material and the reinforcing material.

[0008] In the present invention, the predetermined height is, for example, 160 to 240 mm.

[0009] In the present invention, the reverse running prevention device may further include a display plate. The display board may include a shock absorbing material and a reinforcing material provided between the base plate and the flap plate. The display board may display a warning against wrong-way vehicles. The end of the display panel on the inlet side may be attached to a side wall portion of the reinforcing material. The surface of the display panel may be inclined downward from the entrance side to the exit side. The end of the display panel on the outlet side is located closer to the inlet side than the end of the flap panel on the outlet side.

[0010] In the present invention, the reverse running prevention device may further include an acceleration sensor and an information processing device. The acceleration sensor may be provided on the road surface facing surface. The acceleration sensor may detect acceleration in a moving direction of the flap plate. The information processing device may be provided between the display board and the base board. The information processing device may determine whether a vehicle traveling on the one-way road is traveling in the wrong direction, based on the acceleration in the moving direction. Effect of the Invention

[0011] According to the present invention, when no vehicle load is applied to the flap, the road surface facing the flap is supported by the buffer material, and when a vehicle load is applied, the road surface facing the flap is supported by the buffer material and the reinforcing material. Also, according to the present invention, when no vehicle load is applied, the end of the flap on the outlet side is located at a predetermined height.

[0012] Therefore, when a vehicle traveling in the forward direction on a one-way road (i.e., a forward-driving vehicle) passes above the reverse-driving prevention device, the flap plate lowers due to the vehicle weight. This allows the forward-driving vehicle to pass smoothly. Conversely, when a vehicle traveling in the reverse direction on a one-way road (i.e., a wrong-way vehicle) passes above the reverse-driving prevention device, the tire of the wrong-way vehicle first comes into contact with the end of the flap plate on the exit side. This makes it possible to alert the driver of the wrong-way vehicle that it is traveling in the wrong direction by the vibration of the tire at the time of contact or the sound generated by this vibration.

[0013] In this way, according to the present invention, it is possible to warn the driver of a wrong-way driving vehicle of the wrong-way driving state with a simple configuration that does not include the above-mentioned precision equipment, etc. Therefore, a wrong-way driving prevention device is provided that does not need to be buried in the road. If it is not necessary to bury the device in the road, it is possible to reduce the cost required for installing the device and simplify regular maintenance after installation. [Brief description of the drawings]

[0014] [Figure 1] 1 is a diagram showing an application example of a reverse running prevention device according to a first embodiment. FIG. [Diagram 2] 2 is a schematic cross-sectional view illustrating a configuration example of a device body of the reverse running prevention device according to the first embodiment. FIG. [Diagram 3] 11A and 11B are diagrams illustrating an example of the operation of the device main body when a forward-traveling vehicle passes. [Figure 4] 11A and 11B are diagrams illustrating an example of the operation of the device main body when a wrong-way vehicle passes. [Diagram 5] 11 is a diagram showing an application example of a reverse running prevention device according to a second embodiment. FIG. [Figure 6] 11 is a schematic cross-sectional view illustrating a configuration example of a device body of a reverse running prevention device according to a second embodiment. FIG. [Figure 7] 7 is a diagram showing an example of attention-calling characters shown on the display board shown in FIG. 6. FIG. [Figure 8] 7 is a diagram showing an example of attention-calling characters shown on the display board shown in FIG. 6. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, a reverse running prevention device according to an embodiment of the present invention will be described with reference to the drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will be simplified or omitted.

[0016] 1. First embodiment First, a first embodiment of the present invention will be described with reference to FIGS.

[0017] 1-1.Application examples FIG. 1 is a diagram showing an application example of a reverse running prevention device according to a first embodiment. In the example shown in FIG. 1, lanes L1 and L2 are depicted. Lane L2 is a lane (branching lane) that branches off from lane L1 in the middle. Lane L2 is a one-way road, and the branching point from lane L1 corresponds to an entrance EN of this one-way road. An exit EX of this one-way road exists downstream of lane L2.

[0018] FIG. 1 depicts a vehicle M1 near the entrance EN. The traveling direction of the vehicle M1 coincides with the direction indicated by the lanes L1 and L2 (forward direction FD). Therefore, in the example shown in FIG. 1, the vehicle M1 corresponds to a "forward traveling vehicle." FIG. 1 also depicts a vehicle M2 at the exit EX. The traveling direction of the vehicle M2 coincides with the direction opposite to the direction indicated by the lanes L1 and L2 (reverse direction RD). Therefore, the vehicle M2 corresponds to a "wrong-way vehicle."

[0019] The device main body 10 of the reverse running prevention device according to the first embodiment is installed near the exit EX in order to quickly warn the driver of the vehicle M2 that has entered the lane L2 that the vehicle is running in the wrong direction. The number of device main bodies 10 installed may be one, or two or more. When there are two or more device main bodies 10, these device main bodies 10 are installed in parallel in the road width direction at the exit EN, or are installed diagonally with respect to the road width direction. These device main bodies 10 may be installed so that they as a whole constitute one message to a wrong-way vehicle. One or more of the device main bodies 10 may be installed near the entrance EN, or may be installed near the middle of the lane L2.

[0020] 1-2. Configuration example FIG. 2 is a schematic cross-sectional view for explaining a configuration example of the device body 10. As shown in FIG. 2, the device body 10 includes a base plate 1, a flap plate 2, a hinge 3, a buffer material 4, and a reinforcing material 5. The base plate 1 is a plate-like member for installing the device body 10 on the lane L2, and has a substantially rectangular shape when viewed from above. The width (vertical width) of the base plate 1 in the direction from the entrance EN to the exit EX is, for example, 2 to 3 m, and the width (horizontal width) in the direction perpendicular to this direction is, for example, 1 to 1.5 m. The base plate 1 is fixed to the road surface of the lane L2 using anchor bolts (not shown) or the like. In order to reduce the weight of the device body 10, one or more holes may be formed in the plate thickness direction in the portion of the base plate 1 excluding the outer frame portion.

[0021] The flap plate 2 is a member that comes into contact with the tire of a vehicle (a forward-traveling vehicle or a reverse-traveling vehicle) when the vehicle passes above the device body 10. The flap plate 2 has a substantially rectangular shape when viewed from above, and has a shape that curves inward from the entrance end 2a toward the exit end 2b when viewed in cross section. The entrance end 2a is connected to the base plate 1 via a hinge 3. The exit end 2b is not connected to the base plate 1, and is located at a predetermined height. The predetermined height is, for example, 160 to 240 mm. In order to reduce the weight of the device body 10 and improve friction with the tire, one or more holes may be formed in the plate thickness direction of the flap plate 2 within a range that does not affect durability.

[0022] The cushioning material 4 is a member that supports the road surface-facing surface 2c of the flap plate 2. The cushioning material 4 is made of, for example, a low-resilience elastic material (for example, rubber, sponge containing polyurethane). By making the cushioning material 4 out of a low-resilience elastic material, it is possible to move the flap plate 2 downward in accordance with the vehicle load when a vehicle passes over the device main body 10, and to suppress the flap plate 2 from bouncing up due to the release from the vehicle load after the vehicle has passed. It is desirable to use a low-resilience elastic material that requires several to several tens of seconds to return to its original state after the vehicle has passed, as the material that reduces the bouncing up after the vehicle has passed.

[0023] The reinforcing material 5 is a member that reinforces the base plate 1 and also suppresses plastic deformation of the buffer material 4 by restricting the lowering position of the flap plate 2 when a vehicle passes. The reinforcing material 5 is provided parallel to the installation direction of the hinge 3 in a top view, and is provided closer to the exit EX than the buffer material 4 in a cross-sectional view. The reinforcing material 5 is attached to the base plate 1 by, for example, welding. The height of the reinforcing material 5 is, for example, 100 mm. The position of the top part 5a of the reinforcing material 5 is located lower than the support part 4a of the flap plate 2 in the buffer material 4.

[0024] 1-3. Example of operation 3 is a diagram illustrating an example of the operation of the device main body 10 when a forward-running vehicle passes over the device main body 10. When a forward-running vehicle passes over the device main body 10, the tire TY1 of the forward-running vehicle moves from the entrance end 2a toward the exit end 2b. During this movement, the flap plate 2 is pressed down by the vehicle load applied to the flap plate 2 via the tire TY1, which causes the buffer material 4 to collapse. However, when the buffer material 4 has collapsed to a certain extent, a part of the road surface-facing surface 2c hits the top portion 5a. As a result, the flap plate 2 is supported by the buffer material 4 and the reinforcing material 5.

[0025] While the flap plate 2 is supported by the cushioning material 4 and the reinforcing material 5, the position of the outlet side end 2b in the height direction is at the lowest position. Even when the tire TY1 moves close to the outlet side end 2b, the position of the outlet side end 2b in the height direction is at this lowest position. The flap plate 2 has a curved shape. Therefore, when the tire TY1 leaves the flap plate 2, the distance between the outlet side end 2b and the base plate 1 is small. Therefore, the forward traveling vehicle passes above the device main body 10 smoothly.

[0026] 4 is a diagram illustrating an example of the operation of the device main body 10 when a wrong-way vehicle passes. When a wrong-way vehicle passes above the device main body 10, the tire TY2 of the wrong-way vehicle first comes into contact with the exit side end 2b. At the time of this contact, the exit side end 2b and the tire TY2 vibrate, and this vibration also generates sound.

[0027] However, because the flap plate 2 has a curved shape, the tire TY2 pushes down the exit side end 2b, causing the tire TY2 to ride up onto the flap plate 2. The flap plate 2 is then pushed down by the vehicle load applied to the flap plate 2 via the tire TY2. This series of actions causes the wrong-way vehicle to pass above the device main body 10. In this way, although contact occurs between the exit side end 2b and the tire TY2, the wrong-way vehicle also passes above the device main body 10.

[0028] 1-4.Effects According to the first embodiment described above, a forward-traveling vehicle can pass smoothly above the device main body 10, and a wrong-way vehicle can be made aware of the wrong-way traveling state by the vibration of the tire TY2 upon contact with the exit end 2b or the sound generated by this signal.

[0029] 2. Second embodiment Next, a second embodiment of the present invention will be described with reference to FIGS.

[0030] 2-1.Application examples Fig. 5 is a diagram showing an application example of the reverse running prevention device according to the second embodiment. Traffic facilities such as lanes L1 and L2, entrance EN and exit EX depicted in Fig. 5 are the same as those shown in Fig. 1. An installation example of the device main body 20 of the reverse running prevention device according to the second embodiment is also the same as the installation example of the device main body 10 shown in Fig. 1.

[0031] In the example shown in Fig. 5, two types of warning devices are depicted. An entrance side warning device 21 is provided near the entrance EN. An exit side warning device 22 is provided near the exit EX. The entrance side warning device 21 and the exit side warning device 22 are each configured to be able to communicate with the device main body 20.

[0032] 2-2. Configuration example Fig. 6 is a schematic cross-sectional view illustrating a configuration example of the device body 20. As shown in Fig. 6, the device body 20 includes a base plate 1, a flap plate 2, a hinge 3, a cushioning material 4, and a reinforcing material 5. These elements are common to the device body 10 described in Fig. 1. The device body 20 further includes a display panel 6, an acceleration sensor 7, an information processing device 8, and a communication device 9.

[0033] The display board 6 is a member that displays a warning to vehicles going the wrong way. The display board 6 is, for example, a wide-angle prism type retroreflective sheet with a sheet with cut-out warning characters attached to it. When the retroreflective sheet receives light from the outside (for example, the light from the headlights of a vehicle going the wrong way), it reflects the light. A colored wide-angle prism type retroreflective sheet may be used for the sheet with cut-out warning characters. Note that a colored retroreflective sheet may be used for the sheet on which the warning characters are attached, and in this case, it is preferable to use a color different from the color used for the warning characters.

[0034] 7 and 8 are diagrams showing an example of attention-calling characters displayed on the display board 6. FIG. 7 corresponds to a top view, and FIG. 8 corresponds to an image view as seen from the driver's eye level. In the example shown in FIG. 7 and 8, "STOP" is written as the attention-calling characters. In addition, the shading of parts of the letters "T", "O", and "P" is changed. This improves the visibility of the attention-calling characters.

[0035] Returning to Fig. 6, the explanation of the configuration example of the device main body 20 will be continued. The entrance end 6a of the display plate 6 is attached to the side wall portion 5b of the reinforcing material 5. The exit end 6b of the display plate 6 is in contact with the base plate 1. In other words, the surface 6c of the display plate 6 is inclined from the entrance end 6a toward the exit end 6b. By inclining the surface 6c in this manner, the visibility of the warning characters is improved.

[0036] In the direction from the entrance EN to the exit EX, the exit side end 6b is located closer to the entrance EN than the exit side end 2b. By having the exit side end 6b located closer to the entrance EN than the exit side end 2b, interference between the exit side end 6b and the exit side end 2b pressed down by the vehicle load is reduced.

[0037] The acceleration sensor 7 detects the acceleration in the movement direction of the flap 2. The acceleration sensor 7 is provided on the surface 2c facing the road surface. The acceleration sensor 7 is installed in a position where it does not interfere with the display board 6 when the flap 2 is pushed down by the vehicle load. The acceleration sensor 7 is connected to an information processing device 8 by wire, and the acceleration data detected by the acceleration sensor 7 is sent to the information processing device 8. The acceleration sensor 7 and the information processing device 8 may be connected wirelessly.

[0038] The information processing device 8 performs wrong-way driving determination based on the acceleration data from the acceleration sensor 7. In the wrong-way driving determination, for example, the acceleration characteristics when the wrong-way vehicle contacts the exit side end 2b are compared with the acceleration data history. If the acceleration characteristics and the history match, it is determined that the wrong-way vehicle has contacted the exit side end 2b. If it is determined that the wrong-way vehicle has contacted the exit side end 2b, the information processing device 8 transmits an alarm signal to the communication device 9. The communication device 9 transmits this alarm signal to the entrance side warning device 11 and the exit side warning device 12 (see FIG. 5).

[0039] The information processing device 8 and the communication device 9 are placed side by side in the space between the display plate 6 and the base plate 1. By placing the information processing device 8 and the communication device 9 in this space, these devices are protected by the display plate 6 even when the vehicle load is applied. Power is supplied to the information processing device 8 and the communication device 9 from a secondary battery (not shown). This secondary battery is also placed in the space between the display plate 6 and the base plate 1. The secondary battery is charged by, for example, generating power from a piezoelectric element or sunlight.

[0040] The entrance warning device 11 and the exit warning device 12 each include, for example, a warning light and a speaker. The warning light turns on in response to a warning signal from the communication device 9. It is preferable that the warning light be similar to the rotating lights of an emergency vehicle. In response to the warning signal from the communication device 9, the speaker emits a warning sound to notify those in the vicinity of a vehicle going the wrong way. If a warning light similar to the rotating lights of an emergency vehicle is used, it is preferable that the speaker emits a warning sound such as "pull to the left and stop."

[0041] 2-3.Effects According to the second embodiment described above, in addition to the effects of the first embodiment, the following effects are expected. That is, it is possible to make the driver of the wrong-way driving vehicle aware of the wrong-way driving state by the attention-calling characters on the display board 6. Also, it is possible to notify the surroundings of the occurrence of the wrong-way driving vehicle while performing a wrong-way driving determination by combining the acceleration sensor 7 and the information processing device 8 and issuing an additional warning to the driver of the wrong-way driving vehicle by a warning using the communication device 9, the entrance side warning device 11, and the exit side warning device 12.

[0042] 2-4.Other In the above-described second embodiment, a configuration example of device body 20 including display board 6, acceleration sensor 7, information processing device 8, and communication device 9 has been described. However, device body 20 does not necessarily have to include display board 6. Alternatively, device body 20 does not necessarily have to include acceleration sensor 7, information processing device 8, and communication device 9. [Explanation of symbols]

[0043] 1 Base plate 2 Flap board 2a Inlet side end 2b Outlet end 2c Road facing surface 3 Hinge 4 Cushioning material 4a Support part 5 Reinforcement 5a Top 5b Side wall part 6 Display board 6a Inlet side end 6b Outlet end 7 Acceleration Sensor 8. Information processing equipment 9. Communications Equipment 10,20 Device body 21 Entrance warning device 22 Exit warning device L1, L2 lanes M1, M2 vehicles EN Entrance EX exit FD Forward RD Reverse direction TY1,TY2 Tires

Claims

[Claim 1] A reverse running prevention device installed on the road surface of a one-way street, A substantially rectangular base plate; a flap plate connected to the base plate at an end portion on an entrance side of the one-way passage and not connected to the base plate at an end portion on an exit side of the one-way passage; A cushioning material and a reinforcing material provided between the base plate and the flap plate; Equipped with The road surface facing surface of the flap is curved from the end on the inlet side toward the end on the outlet side, The cushioning material supports the road surface-facing surface by elastic force, The reinforcing material is provided closer to the outlet than the buffer material, When a vehicle load is not applied to the flap plate, the end portion of the flap plate on the outlet side is located at a predetermined height, and a top portion of the reinforcing material is located below a support portion of the flap plate in the cushioning material, When the vehicle load is applied to the flap plate, a part of the road surface facing surface contacts the top portion, and the road surface facing surface is supported by the buffer material and the reinforcing material, an acceleration sensor provided on the road surface facing surface to detect acceleration in a moving direction of the flap; an information processing device that determines whether a vehicle traveling on the one-way road is traveling in the wrong direction based on the acceleration in the moving direction; Further comprising: When it is determined in the wrong-way driving determination that the wrong-way driving vehicle has come into contact with the end portion on the exit side, a warning signal is transmitted from the information processing device to a warning device provided at the entrance or exit of the one-way road. A reverse running prevention device.

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