JP2021079908A - Crossing warning sign - Google Patents

Abstract

To provide a crossing warning sign capable of reducing wind resistance and reducing a load applied to a support column.SOLUTION: A crossing warning sign 1A includes a range where warning sign members 2A cross each other and its front face and rear face are formed to be curved so as to reduce the resistance of wind. Each warning sign member is constituted of a cylindrical member having a cross sectional outer shape with an approximately elliptical shape or an approximately circular shape except for the range where the warning sign members cross each other. A material of the warning sign members is a synthetic resin. A light emitting unit is provided inside the cylindrical member.SELECTED DRAWING: Figure 2

Description

The present invention relates to a railroad crossing warning sign provided in a railroad crossing alarm.

Generally, as shown in FIG. 1, a railroad crossing alarm 100 is configured such that a railroad crossing alarm 101, a warning light 102, a traveling direction indicator 103, and the like are provided in order from the top on a railroad crossing 25. Reference numeral 104 is an alarm sound generator. The conventional railroad crossing warning sign 101 is provided at a high position of the support column 25, and is configured by crossing metal plates formed in an elongated rectangular shape in a front view (see also Patent Document 1). The front of each metal plate has a striped pattern in which yellow and black are arranged alternately.

Japanese Unexamined Patent Publication No. 11-12903

However, since the railroad crossing warning mark 101 described above is provided near the upper end of the support column 25 and a metal plate is used, the railroad crossing warning mark 101 is directly affected by the wind on the front surface and the back surface thereof. As a result, a considerable load is applied to the vicinity of the base of the column, which makes it difficult to add additional equipment to the column, and it is difficult to provide a useful railroad crossing alarm. The additional equipment includes, for example, an increase in the number of warning lights, a railroad crossing obstacle notification operator, a train traveling direction indicator, and the like. On the other hand, in order to make it possible to add additional equipment, it is sufficient to increase the wall thickness of the columns to increase their bending strength, but it will be a large-scale construction for existing railroad crossing alarms, and it will be handled in consideration of costs. It was difficult to do.

The present invention has been made in view of this point, and an object of the present invention is to provide a railroad crossing warning sign that reduces wind resistance and reduces the load applied to a support column.

As a means for solving the above-mentioned problems, the invention according to claim 1 is a railroad crossing warning sign formed by crossing a warning sign member formed in an elongated rectangular shape in a front view, and the railroad crossing warning sign is a railroad crossing warning sign. It is characterized by having curved surfaces on the front surface and the back surface thereof to reduce wind resistance.

The invention according to claim 2 is characterized in that, in the invention of claim 1, the guard member is formed in a substantially elliptical shape or a substantially circular shape in cross-sectional shape except for a crossing range. Is.

The invention according to claim 3 is the invention according to claim 2, wherein the warning marker member is composed of a tubular member whose cross-sectional outer shape is formed in a substantially elliptical shape or a substantially circular shape except for a crossing range. It is characterized by that.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the material of the warning marker member is a synthetic resin.

The invention according to claim 5 is characterized in that, in the invention of claim 3 or 4, a light emitting unit is provided in the tubular member.

According to the railroad crossing warning mark according to the present invention, the wind resistance can be reduced, and as a result, the load applied to the strut can be reduced, and the addition of additional equipment to the strut can be facilitated.

FIG. 1 is a front view of a railroad crossing alarm provided with a railroad crossing warning sign according to the first embodiment of the present invention. FIG. 2 is a perspective view of a railroad crossing warning sign according to the first embodiment. FIG. 3 is an exploded perspective view of the railroad crossing warning mark according to the first embodiment. FIG. 4 is a perspective view of a railroad crossing warning sign according to the second embodiment. FIG. 5 is an exploded perspective view of the railroad crossing warning mark according to the second embodiment. FIG. 6 is a perspective view from one of the hub members adopted for the railroad crossing warning mark according to the second embodiment. FIG. 7 is a perspective view from the other side of the hub member adopted for the railroad crossing warning mark according to the second embodiment. FIG. 8 is an enlarged view of a main part of the railroad crossing warning mark according to the third embodiment.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS. 1 to 8.
First, the railroad crossing warning mark 1A according to the first embodiment of the present invention will be described with reference to FIGS. 2 and 3, with reference to FIG. 1 as appropriate.
As shown in FIGS. 1 and 2, the railroad crossing warning mark 1A according to the first embodiment of the present invention is configured by crossing the warning mark members 2A and 2A formed in an elongated rectangular shape in a front view. As can be seen from FIG. 2, the railroad crossing warning mark 1A according to the first embodiment includes a range where the warning mark members 2A and 2A cross, and the front surface and the back surface thereof are formed on a curved surface in order to reduce wind resistance. There is. Specifically, as shown in FIGS. 2 and 3, the warning marker member 2A is composed of a tubular member 4 whose cross-sectional outer shape is formed in a substantially elliptical shape except for a crossing range. The material of the tubular member 4 is a transparent synthetic resin, and for example, polycarbonate is adopted. In the present embodiment, the warning marker member 2A may employ a tubular member 4 having a substantially circular cross-sectional outer shape, except for a crossing range. A fitting recess 6 is formed in front of the crossing range of the tubular member 4 constituting one of the warning guard members 2A. Further, a fitting recess 6 is formed in the crossing range of the tubular member 4 constituting the other warning mark member 2A on the back surface thereof.

As described above, in the present embodiment, the tubular member 4 of the warning marker member 2A has a substantially elliptical cross-sectional outer shape, but its long side dimension is approximately 180 mm, and its short side dimension is. For example, it is set to an appropriate value within the range of 90 mm to 180 mm. Further, the thickness dimension of the tubular member 4 is set to an appropriate value within the range of 1 mm to 5 mm. When the cross-sectional outer shape of the tubular member 4 of the warning marker member 2A is formed in a substantially circular shape, the outer diameter thereof is approximately 180 mm.

The front surface of the tubular member 4 is provided with a striped pattern 9 in which yellow (white in the figure) and black (black in the figure) are alternately arranged by a high-intensity reflective sheet material, coating, or the like. That is, as can be seen from FIGS. 1 to 3, the fitting recess 6 provided on the front surface of the tubular member 4 of one warning sign member 2A and the back surface of the tubular member 4 of the other warning sign member 2A are provided. When these warning mark members 2A and 2A are crossed to form a railroad crossing warning mark 1A so that the fitting recesses 6 are fitted to each other, yellow and black are alternately arranged in front of the warning mark members 2A and 2A. The striped pattern 9 is arranged accurately. As shown in FIGS. 2 and 3, inside the tubular member 4 constituting the warning marker member 2A, elongated plate-shaped reinforcing ribs 12 and 12 are arranged along the axial direction thereof. A plurality of reinforcing ribs 12, 12 are arranged in the tubular member 2 at intervals in the long side direction thereof (two in the present embodiment). The plate-shaped reinforcing ribs 12, 12 are arranged inside the tubular member 4 so as to stand along the short side direction thereof.

Then, as shown in FIG. 3, a fitting recess 6 provided on the front surface of one warning sign member 2A (cylindrical member 4) and a fitting provided on the back surface of the other warning sign member 2A (cylindrical member 4). A plurality of attachments are made so that the joint recesses 6 are fitted to each other, and the crossed portions are sandwiched between the plate-shaped connecting member 14 and the bottom plate portion 16 of the U-shaped bracket member 15 from both outer sides. The railroad crossing warning mark 1A according to the first embodiment is formed by connecting the bolts 20 and 20 (two in the present embodiment).
Next, when the railroad crossing warning mark 1A according to the first embodiment is supported by the support column 25, a plurality of U-shaped bolts (two in this embodiment) 27, 27 are attached to the bracket member 15 and each warning mark. The columns 25 are inserted into the members 2A and 2A, and the columns 25 are provided with the U-shaped bases 28 and 28 of the U-shaped bolts 27 and 27 and the arcuate recesses 18 and 18 provided on the facing wall portions 17 and 17 of the bracket member 15. It is sandwiched between the two and fixed to the connecting member 14 with a nut. As a result, the railroad crossing warning mark 1A according to the first embodiment can be attached at an appropriate position on the support column 25.

Although the tubular member 4 is used in the railroad crossing warning mark 1A provided in the railroad crossing warning mark 1A according to the first embodiment described above, a solid member may be used. Further, although the tubular member 4 of the railroad crossing warning mark 1A provided in the railroad crossing warning mark 1A according to the first embodiment uses a transparent synthetic resin as a material thereof, a metal may be used.

Next, the railroad crossing warning mark 1B according to the second embodiment will be described with reference to FIGS. 4 to 7. When explaining the railroad crossing warning mark 1B according to the second embodiment, the difference from the railroad crossing warning mark 1A (see FIGS. 2 and 3) according to the first embodiment will be mainly described.
As shown in FIGS. 4 and 5, the railroad crossing warning mark 1B according to the second embodiment is configured by connecting four warning mark members 2B and 2B to the hub member 40, respectively. In other words, the railroad crossing warning mark 1B according to the second embodiment is configured such that four warning mark members 2B and 2B are projected from the side wall surface of the hub member 40 in a cross shape. The warning marker member 2B includes a tubular member 4 having a substantially elliptical cross-sectional outer shape, and a cap member 42 that closes an opening on the other end side of the tubular member 4. One end side of the tubular member 4 is opened, and the opening on the other end side is closed by the cap member 42. As a result, as can be seen from FIG. 4, the railroad crossing warning mark 1B according to the second embodiment has wind on the front surface and the back surface thereof except for the range where the warning mark members 2B and 2B cross, that is, the range of the hub member 40. It is formed on a curved surface to reduce the resistance of the. The elliptical shape (cross-sectional outer shape) of the tubular member 4 of the railroad crossing member 2B provided in the railroad crossing warning mark 1B according to the second embodiment is a warning mark provided in the railroad crossing warning mark 1A according to the first embodiment. It is the same as the dimension of the elliptical shape (cross-sectional outer shape) of the tubular member 4 of the member 2A.

The tubular member 4 may have a substantially circular (cylindrical) cross-sectional outer shape, similar to the warning mark member 2A provided for the railroad crossing warning mark 1A according to the first embodiment. Further, in the railroad crossing warning mark 1B according to the second embodiment, the reinforcing ribs 12 and 12 are not arranged in the tubular member 4 of the warning mark member 2B. As shown in FIGS. 6 and 7, the hub member 40 is a block main body 44 formed in a substantially hexagonal columnar shape as a whole, and a side wall surface of the block main body 44, which protrudes outward from each of the four points. It includes an elliptical tubular portion 45 to be provided. A substantially rectangular tubular portion 48 is projected from one end surface of the block main body portion 44. Arc-shaped recesses 50 and 50 are formed in the wall portions 49 and 49 constituting the rectangular tubular portion 48, respectively. A hexagonal recess 53 having a hexagonal outer shape is formed on the other end surface of the block body 44. With reference to FIG. 5, the hexagonal recess 53 is covered with a cover member 67. The cover member 67 is made of a plate material having a hexagonal shape in a plan view. As shown in FIG. 6, in the block main body 44, a plurality of bolt through holes 55 are formed around the rectangular tubular portion 48. In the present embodiment, two adjacent bolt through holes 55, 55 are formed around the rectangular tubular portion 48 at four locations near the corners thereof.

In the hexagonal recess 53 of the block main body 44, as shown in FIG. 7, a bolt support cylindrical portion 56 communicating with each bolt through hole 55 is formed from the bottom of the hexagonal recess 53 to each bolt through hole 55. Correspondingly, it is projected. The elliptical tubular portion 45 is projected from four positions on the side wall surface of the block main body portion 44, and is formed at a position where straight lines connecting the pair of opposing elliptical tubular portions 45, 45 cross each other. Further, as shown in FIGS. 6 and 7, a large-diameter through hole 60 is formed in a substantially central portion of the bottom wall portion of the elliptical tubular portion 45, and a plurality of small-diameter through holes 60 are formed on both sides in the long side direction thereof. 61 and 61 are formed, respectively. In the present embodiment, the small diameter through holes 61 and 61 are formed at four locations on both sides of the large diameter through hole 60 in the long side direction.

Then, when constructing the railroad crossing warning mark 1B according to the second embodiment, as shown in FIG. 5, with respect to one warning mark member 2B (one elliptical tubular portion 45 of the hub member 40). A plurality of support rod members 64, 64, for example, two are prepared, and the support rod members 64, 64 are, for example, all of the four guard rod members 2B (four elliptical tubular portions 45 of the hub member 40). Prepare 8 bottles. Further, as the warning mark member 2B, four sets of a tubular member 4 having a striped pattern 9 in which yellow and black are alternately arranged on the front surface and a cap member 42 are prepared. Then, the fixing plates 65, 65 provided at the other ends of the support rod members 64, 64 are provided in the bottom wall portion in the elliptical tubular portion 45, and a plurality of corresponding small diameter through holes 61, 61 (see FIG. 7). Fix via. Subsequently, a tubular member 4 having a striped pattern 9 in which yellow and black are alternately arranged on the front surface is provided so as to cover the support rod members 64 and 64, and an opening on one end side thereof is opened in the hub member 40. After being fitted to the elliptical tubular portion 45, the other ends of the support rod members 64, 64 are connected to the cap member 42 that closes the opening on the other end side of the tubular member 4, respectively, and the hub member 40 is connected. The warning mark member 2B is integrated with the elliptical tubular portion 45 of the above. The work of assembling the warning marker member 2B is performed on all four elliptical tubular portions 45 of the block main body portion 44, respectively.

Next, when the railroad crossing warning mark 1B according to the second embodiment is supported by the support column 25, as shown in FIGS. 4 and 5, a plurality of U-shaped bolts (two in this embodiment) 27, 27. Is inserted into the corresponding bolt through holes 55, 55 and the bolt support cylindrical portions 56, 56 of the hub member 40, respectively, and the support columns 25 are inserted into the U-shaped bases 28, 28 of the U-shaped bolts 27, 27. The cover member of the hub member 40 is sandwiched between the rectangular tubular portion 48 of the hub member 40 and the arcuate recesses 50, 50 (see FIG. 6) provided in the corresponding wall portions 49, 49. Fix the nut to 67. As a result, the railroad crossing warning mark 1B according to the second embodiment can be attached at an appropriate position on the support column 25.

Next, the railroad crossing warning mark 1C according to the third embodiment will be described with reference to FIG. When explaining the railroad crossing warning mark 1C according to the third embodiment, the difference from the railroad crossing warning mark 1B (see FIGS. 4 and 5) according to the second embodiment will be mainly described. Note that FIG. 8 is an enlarged view of a main part of the railroad crossing warning mark 1C according to the third embodiment, and is a view in a state where the inside of the tubular member 4 is exposed during assembly.
The railroad crossing warning mark 1C according to the third embodiment is configured by arranging a light emitting unit 70 inside the tubular member 4. A transparent synthetic resin is used as the material of the tubular member 4 constituting the warning marker member 2C. The light emitting unit 70 is composed of an LED substrate 71. The LED substrate 71 is a printed circuit board on which a light emitting diode (LED72) is mounted, and a large number of LEDs 72 and 72 are surface-mounted on one surface. The LED substrate 71 is arranged in the tubular member 4 in a range from the inside of the elliptical tubular portion 45 of the hub member 40 to the cap member 42. A cable for power supply (not shown) is connected to the LED substrate 71, and the cable is connected to the support column 25 via a large-diameter through hole 60 provided at the bottom of the elliptical tubular portion 45 of the hub member 40. It is inserted inside and connected to a control device or the like including a power supply (not shown).

When a large number of LEDs 72, 72 mounted on the LED board 71 are made to emit light, electric power is supplied from the outside via a cable. For example, a large number of LEDs 72, 72 mounted on the LED board 71 are supplied with electric power. Is configured so that when power is supplied from the outside, all lights are turned on at the same time, and when power supply from the outside is stopped, all lights are turned off at the same time. That is, by interrupting the supply of electric power from the outside, a large number of LEDs 72 and 72 mounted on the LED board 71 can be blinked at the same time. In the above-described embodiment, the large number of LEDs 72 and 72 of the LED board 71 are blinked at the same time, but the large number of LEDs 72 and 72 of the LED board 71 may be constantly lit.

As described above, in the railroad crossing warning mark 1A according to the first embodiment, the front and back surfaces thereof are formed on a curved surface that reduces wind resistance, including the range where the warning mark members 2A and 2A cross. There is. Further, in the railroad crossing warning marks 1B and 1C according to the second and third embodiments, the front and back surfaces thereof are wind resistance except for the range where the warning marks members 2B and 2B (2C, 2C) cross. It is formed on a curved surface that reduces. Specifically, the railroad crossing warning marks 1A to 1C according to the first to third embodiments have a substantially elliptical shape or a substantially circular shape in cross-sectional shape, except for the crossing range. It is formed. As a result, the wind resistance to the railroad crossing warning marks 1A to 1C can be reduced, and as a result, the load applied to the support column 25 can be reduced. Then, the necessary additional equipment can be added to the support column 25, and a more useful railroad crossing alarm 100 (see FIG. 1) can be provided, and as a result, the safety for the crossing of the railroad crossing is improved. In addition, in the railroad crossing warning marks 1A to 1C according to the first to third embodiments, the cross-sectional outer shape thereof is particularly formed in a substantially elliptical shape except for the crossing range. From the experimental results, it has been clarified that the wind resistance can be reduced by about 15% as compared with the conventional railroad crossing warning sign 101 formed by crossing a warning sign member formed of an elongated rectangular metal plate. ..

In the railroad crossing warning mark 1A according to the first embodiment, the range where the warning mark members 2A and 2A cross is also formed on a curved surface whose front and back surfaces reduce wind resistance. And, although it is a little more than the railroad crossing warning marks 1B and 1C according to the third embodiment, the wind resistance can be reduced.

Further, the railroad crossing warning marks 1A to 1C according to the first to third embodiments have a cross-sectional outer shape formed in a substantially elliptical shape or a substantially circular shape except for a crossing range. The railroad crossing warning marks 1A to 1C according to the first to third embodiments are three-dimensionally configured. As a result, the existence of the railroad crossing warning marks 1A to 1C can be easily visually recognized not only from the front but also from a wide range along the vertical direction such as diagonally downward of the railroad crossing warning marks 1A to 1C, further improving safety.

Further, since the warning mark members 2A to 2C provided for the railroad crossing warning marks 1A to 1C according to the first to third embodiments are composed of the tubular member 4 except for the crossing range, the light emitting unit is inside. It is effective because it can be equipped with 70 and the like. Further, since the transparent tubular member 4 is adopted for the warning mark members 2A to 2C, when the high-intensity reflective sheet material is attached to the inner surface of the tubular member 4, the high-intensity reflective sheet material is used. Can be protected.

Furthermore, in particular, the railroad crossing warning mark 1A according to the first embodiment is formed of a conventional metal plate because the railroad crossing warning mark 1A is composed of only the tubular member 4 (warning mark member 2A) whose material is synthetic resin. It is possible to reduce the weight of the guard member, and further reduce the load applied to the support column 25.

Furthermore, the railroad crossing warning mark 1C according to the third embodiment is provided with a light emitting unit 70 (LED substrate 71) in the tubular member 4. As a result, the presence of railroad crossing warning marks 1A to 1C can be easily visually recognized by the aisle pedestrian even at night, and as a result, the existence of the railroad crossing can be easily notified to the aisle pedestrian even at night. It becomes.

The railroad crossing warning marks 1A to 1C according to the first to third embodiments have a cross-sectional outer shape formed in a substantially elliptical shape or a substantially circular shape except for a crossing range. However, a configuration may be provided in which an uneven portion, a wavy curved surface, or the like is added to the front surface and the back surface in order to reduce wind resistance. Further, the railroad crossing warning marks 1A to 1C according to the first to third embodiments have a cross-sectional outer shape formed in a substantially elliptical shape or a substantially circular shape except for a crossing range. However, the cross-sectional outer shape may be formed in a rhombus shape or the like, and the corner portion thereof may be formed in a curved surface.

1A, 1B, 1C railroad crossing warning sign, 2A, 2B, 2C warning sign member, 4 tubular member, 70 light emitting unit

Claims (5)

A railroad crossing warning sign formed by crossing warning sign members formed in an elongated rectangular shape when viewed from the front.
The railroad crossing warning sign is characterized by having curved surfaces on the front surface and the back surface thereof to reduce wind resistance. The railroad crossing warning mark according to claim 1, wherein the railroad crossing member is formed in a substantially elliptical shape or a substantially circular shape in cross-sectional shape except for a crossing range. The railroad crossing guard according to claim 1 or 2, wherein the railroad crossing member is composed of a tubular member whose cross-sectional outer shape is formed in a substantially elliptical shape or a substantially circular shape, except for a crossing range. Mark. The railroad crossing warning mark according to any one of claims 1 to 3, wherein the material of the warning mark member is a synthetic resin. The railroad crossing warning mark according to claim 3 or 4, wherein a light emitting unit is provided in the tubular member.

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