display board

Abstract

To provide a display board that is easy to install and store. [Solution] A connecting part connects a pair of plate materials 1 and 2 so that they can be opened and closed at predetermined edges and predetermined inner angles. A biasing part is provided on the pair of plate materials 1 and 2 so as to constantly bias them in the open position. A holding part 4 consists of a pair of ferromagnetic materials that attract each other and is provided on the opposing surfaces of the pair of plate materials 1 and 2 so as to be able to hold and release the pair of plate materials 1 and 2 in the closed position against the biasing force of the biasing part. The pair of plate materials 1 and 2 are provided so as to be able to stand on their own in the open position. The pair of plate materials 1 and 2 have a pivot point 5 on one of their opposing surfaces. The plate materials 1 and 2 are provided so as to release the connection of the pair of holding parts 4 by lever principle when pressure is applied to a point of force located on the outer surface of the plate materials 1 and 2 on the opposite side of the pivot point 5 from the connecting surface of the holding part 4.

Description

【Technical Field】 【0001】 The present invention relates to a display board. 【Background Art】 【0002】 At construction sites or accident sites on highways, display boards such as arrow boards are often installed to indicate a lane regulation area and instruct safe lane passage. Since such display boards are installed at dangerous locations where lane regulation is required, shortening the installation work is demanded. 【0003】 As a display board aimed at shortening the installation work, a red reflector is assembled into an equilateral triangle frame to form a base, and on the back of each of the red reflectors on the three sides of the base, the base of a right-angled isosceles triangle having a base equal in length to the side length is provided. Each of the first, second, and third reflector plates is connected by elastic connecting means that bias the base in the unfolding direction with a spring force, and a detachable locking means having a locking force for pressing all of the first, second, and third reflector plates in a folded state overlapping the base with a force exceeding the spring biasing force of the elastic connecting means is provided (for example, see Patent Document 1). 【Prior Art Documents】 【Patent Documents】 【0004】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2008-291514 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0005】 However, the display board described in Patent Document 1 has a problem that it takes time to fold and store the four plates, namely one base and three reflector plates. 【0006】 The present invention has been made paying attention to such problems, and an object thereof is to provide a display board that is easy to install and store. [Means for solving the problem] 【0007】 To achieve the above objective, the display panel according to the present invention comprises a pair of plate members, a connecting portion, a biasing portion, and a holding portion, wherein the connecting portion connects the pair of plate members at predetermined edges at predetermined inner angles so as to be open and closed between an open state and a closed state, and the biasing portion is provided on the pair of plate members so as to constantly bias the pair of plate members to the open state. The holding portion consists of a pair of ferromagnetic materials that attract each other. The pair of plates are in the closed state against the biasing force of the biasing part. The pair of plates are provided on opposing surfaces so as to be connectable to each other, and one of the pair of plates has a pivot point that protrudes from the opposing surface by a length within the distance between the opposing surfaces of the pair of plates in the closed state, and the plates are movably provided so as to be released from the connection of the pair of holding parts by applying pressure to a point of force located on the outer surface of the plate on the opposite side of the pivot point from the connecting surface of the holding part, in accordance with this principle. The pair of plates is characterized in that, when opened, they are provided so as to be self-supporting with their edges other than the predetermined edges touching the ground. 【0008】 The display panel according to the present invention has a biasing unit that constantly biases a pair of plates into an open position. By releasing the holding unit from the closed position of the plates, the pair of plates can be opened. Once the plates are open, the edges other than the predetermined connected edges can be grounded to allow the panel to stand on its own, making installation easier. Furthermore, the holding unit can hold the pair of plates in a closed position, making storage easier. 【0009】 The predetermined interior angle is preferably 20 to 90 degrees, and particularly preferably 40 to 70 degrees. The connecting part and the biasing part may be made of the same member or of different members. The connecting part and the biasing part are preferably made of a spring hinge. The edges other than the predetermined edge that is to be grounded may be the edge opposite to the predetermined edge that is facing upwards and downwards, or the edge that is facing laterally and downwards. 【0011】 In the display panel according to the present invention, The holding part consists of a pair of ferromagnetic materials that attract each other, so during storage, the pair of ferromagnetic materials can be joined together, making it easy to hold the pair of plates in a closed state. During installation, by applying pressure to the point of force on the plates, the pair of holding parts can be released using the lever principle, making it easy to open the pair of plates. 【0012】 A pair of ferromagnetic materials may consist of a permanent magnet and an iron or stainless steel plate, or it may consist of two permanent magnets with different polarities. One of the pair of ferromagnetic materials may be constructed by making one of a pair of plate materials an iron or stainless steel plate. Preferably, the biasing force of the biasing part is set such that when one of the plate materials is tilted such that its outer surface forms an angle of less than 90 degrees with respect to the horizontal plane, with the predetermined edge facing upwards and the opposite edge of the predetermined edge in contact with the horizontal plane, the weight of the other plate material exceeds the biasing force, causing the pair of plate materials to close and the pair of ferromagnetic materials to connect to each other. Preferably, the biasing force of the biasing part is set such that when the pair of plate materials is lifted with the predetermined edge facing upwards and the holding part is released, the pair of plate materials open. 【0013】 The display board according to the present invention preferably has grooves in the plate material for inserting and attaching the clip of a regulatory auxiliary device equipped with a clip. In this case, the regulatory support equipment is easy to use in conjunction with the display board according to the present invention, and the regulatory support equipment is less likely to be lost. Regulatory auxiliary equipment includes, for example, safety lights or high-visibility lights. 【0014】 In the display panel according to the present invention, it is preferable that the pair of plate materials are provided with handles having a diameter of 3 mm to 20 mm and a length of 15 cm to 40 cm for gripping from above. In this case, the handles of multiple display panels according to the present invention can be grasped together, making it easy to transport multiple display panels. Preferably, the handles are made of wire covered with a soft resin tube. 【0015】 The display board according to the present invention preferably has a mark indicating the point of force on the outer surface of the plate material, and a protective material for protecting the surface on the outer surface. In this case, the markers make it easier to identify the point of force application, and it becomes easier to apply the pressure needed to open the pair of boards. Furthermore, when multiple units are stacked, the protective material can protect the surface of the boards from scratches and other damage. The mark may also serve as a protective material. The protective material preferably consists of a protective seal made of a soft resin. In addition to the arrow board, the display board according to the present invention may also be used for other safety signs, guide boards, promotional boards, etc. 【Effects of the Invention】 【0016】 According to the present invention, it is possible to provide a display board that is easy to install and store. 【Brief Description of the Drawings】 【0017】 [Figure 1] It is a front view of the display board of the embodiment of the present invention. [Figure 2] It is a perspective view of the open state of the display board shown in FIG. 1. [Figure 3] It is a bottom view of the open state of the display board shown in FIG. 1. [Figure 4] It is a side view of the open state of the display board shown in FIG. 1. [Figure 5] It is a bottom view of the (A) closed state of the display board shown in FIG. 1 and a bottom view when pressure is applied to the force point to open it from the closed state. 【Embodiments for Carrying Out the Invention】 【0018】 Hereinafter, embodiments of the present invention will be described based on the drawings. FIGS. 1 to 5 show a display board of an embodiment of the present invention. As shown in FIGS. 1 to 5, the display board has a pair of plate materials 1 and 2, a spring hinge 3, and a holding portion 4. 【0019】 The pair of plate materials 1 and 2 are made of rectangular plate materials with the same shape, the same dimensions, and the same material. The dimensions of each plate material 1 and 2 are, for example, 40 cm in length and 60 cm in width. Each plate material 1 and 2 is made of a synthetic resin board and has flexibility. Each plate material 1 and 2 has elasticity such that when pressure is applied from a direction perpendicular to the surface, it deforms and when the pressure is removed, it restores its original shape. The hinge 3 with a spring consists of a plurality (for example, 4) but may also consist of one. Each hinge 3 with a spring is formed by rotatably combining two wings around a rotating shaft pin inserted into a torsion coil spring, and both ends of the torsion coil spring are respectively abutted against each wing to bias each wing in the opening direction. 【0020】 One wing of each hinge 3 with a spring is fixed to an end portion near the edge of one long side 11 of one plate material 1, and the other wing is fixed to an end portion near the edge of one long side 21 of the other plate material 2. The plurality of hinges 3 with a spring are arranged at equal intervals at both ends and the middle portion of one long side 11, 21 of each plate material 1, 2. The plate materials 1 and 2 are configured such that in the state opened by the biasing force of the hinge 3 with a spring, the edges of the long sides 11, 21 of the plate materials 1 and 2 abut against each other to serve as stoppers and are opened at a predetermined inner angle. The predetermined inner angle is set at an angle of 40 to 70 degrees. 【0021】 Each hinge 3 with a spring has a function as a connecting portion that connects the pair of plate materials 1 and 2 so as to be openable and closable between a state opened at a predetermined inner angle and a closed state at a predetermined edge, and a function as a biasing portion that constantly biases the pair of plate materials 1 and 2 in the opened state. The two wings and the rotating shaft pin constitute the connecting portion, and the torsion coil spring constitutes the biasing portion. 【0022】 The pair of plate materials 1 and 2 are provided so as to be self - supporting by grounding the edges of the other long sides 12, 22 in the opened state. A rubber reinforcing material is attached to the grounded edge. As shown in FIGS. 1 and 2, a reflective material sheet 13 is attached to the entire outer surface of each plate material 1 and 2, and it becomes bright when illuminated by the light of an automobile headlight. An arrow indicating a lane regulation area for indicating safe lane passage is displayed on the reflective material sheet 13. 【0023】 The holding part 4 consists of a pair of ferromagnetic materials that attract each other. The pair of ferromagnetic materials consists of a permanent magnet 41 and an iron plate 42. The permanent magnet 41 is made of neodymium magnet. The permanent magnet 41 and the iron plate 42 are fixed to the opposing surfaces of the pair of plate materials 1 and 2 so that they can be coupled to each other when the pair of plate materials 1 and 2 are closed against the biasing force of the spring hinge 3. The pair of ferromagnetic materials are fixed at the center of the length along the long sides 12 and 22 of the plate materials 1 and 2, away from the spring hinge 3 and close to the edges of the long sides 12 and 22 that come into contact with the ground. The permanent magnet 41 and the iron plate 42 are coupled to each other to hold the pair of plate materials 1 and 2 in a closed state, and can be released (uncoupled) by increasing the distance between them. 【0024】 The spring hinge 3 is designed such that when the long sides 11 and 21 to which the spring hinge 3 is fixed are facing upwards, and the opposite long sides 12 and 22 are in contact with a horizontal surface, and one plate 1 is tilted so that its outer surface forms a predetermined angle of less than 90 degrees with respect to the horizontal plane, the weight of the other plate 2 exceeds the biasing force, closing the pair of plates 1 and 2 and connecting the permanent magnet 41 and the iron plate 42 to each other. Conversely, when the pair of plates 1 and 2 are lifted with the long sides 11 and 21 facing upwards, releasing the permanent magnet 41 and the iron plate 42 (disconnecting them), the pair of plates 1 and 2 are opened. 【0025】 As shown in Figures 3 to 5, one of the plate members 1 has a pivot point 5 that protrudes from the opposing surface larger than the iron plate 42, with a length equal to the distance between the opposing surfaces of the pair of closed plate members 1 and 2. Two pivot points 5 are provided. Each pivot point 5 is positioned at equal intervals from the iron plate 42, sandwiching the iron plate 42 along the longitudinal direction of the long sides 11 and 12 of the plate member 1. Each pivot point 5 consists of a bolt that penetrates the outer surface of the plate member 2 to which the iron plate 42 is fixed. The bolt is fixed to the inner opposing surface of the plate member 2 with a nut. The plate members 1 and 2 are flexible and are movably provided so that by applying pressure to the point of force located on the outer surface of the plate members 1 and 2 on the opposite side of the pivot point 5 from the coupling surface of the permanent magnet 41 and the iron plate 42, the permanent magnet 41 and the iron plate 42 can be separated by the lever principle and their coupling released (see Figures 5(A) and 5(B)). 【0026】 As shown in Figure 3, each plate 1, 2 has grooves 14, 24 extending along its length, located in the center of its length along the long sides 11, 21, near the spring-loaded hinge 3. A clip for a regulatory auxiliary device equipped with a clip can be inserted into the grooves 14, 24. The regulatory auxiliary device consists of a safety light or a high-visibility light. Each of the boards 1 and 2 is provided with a handle 6 on one of its long sides 11 and 21 for gripping from above. The handle 6 consists of a wire covered with a soft resin tube. The handle 6 is attached to each of the boards 1 and 2 by passing the wire through the edge of one of the long sides 11 and 21 of each board. The handle 6 is thin and long, with a diameter of 6 mm to 14 mm and a length of 25 cm to 30 cm. 【0027】 As shown in Figures 1 and 2, each plate material 1, 2 has two markers 7 on its outer surface that indicate the point where pressure is applied to release the coupling between the permanent magnet 41 and the iron plate 42. Each marker 7 consists of a protective seal made of soft resin. Each marker 7 is red for easy visibility. Each marker 7 is located near the outer corner of each plate material 1, 2, close to the edges of the long sides 12, 22 that make contact with the ground. Each plate material 1, 2 has two protective materials 8 near the outer corner of each plate material 1, 2, close to the spring hinge 3, and one protective material 8 in the center of each plate material 1, 2. Each protective material 8 is intended to protect the outer surface of the plate material 1, 2 from scratches and other damage when multiple display panels are stacked in a closed state. Each marker 7 also functions as a protective material to protect the outer surface of the plate material 1, 2 from scratches and other damage when multiple display panels are stacked. 【0028】 Next, I will explain the mechanism of action. In its stored state, the display panel is closed, with a pair of plates 1 and 2 connected by a permanent magnet 41 and an iron plate 42 that attract each other (see Figure 5(A)). During installation, the spring-loaded hinge 3 constantly biases the pair of plates 1 and 2 in the open position. By holding the handle 6 and lifting the pair of plates 1 and 2 with the long sides 11 and 21 facing upwards, and applying pressure to the point of force application on the plates 1 and 2, the connection between the permanent magnet 41 and the iron plate 42 is released from the closed position by the principle of leverage, and the pair of plates 1 and 2 can be easily opened (see Figure 5(B)). The point of force application is easily visible by the mark 7, making it easy to apply the pressure needed to open the pair of plates 1 and 2. The permanent magnet 41 and iron plate 42 are set to have an attractive force that prevents them from separating during the transport of the display board, and allows a worker to detach them and open the plates 1 and 2 by lightly tapping one of the markers 7, which will serve as the point of force application, with their knee or foot. Once the pair of plates 1 and 2 are opened, as shown in Figures 2 to 4, the plates 1 and 2 can be made to stand on their own by placing the edges of the other long sides 12 and 22 on the ground while they are open in a mountain shape, making the installation work easier. Making the installation work easier also makes it easier to ensure the safety of the workers. 【0029】 During storage, while holding the handle 6 and keeping the lower long edges 12 and 22 of the boards 1 and 2 on the ground, tilt one of the lower boards 1 so that its outer surface is at an angle of less than 90 degrees relative to the horizontal plane, and pull it towards it. The weight of the other upper board 2 will then exceed the biasing force of the spring hinge 3, causing the boards 1 and 2 to overlap, connecting the permanent magnet 41 and the iron plate 42 to each other, and allowing the pair of boards 1 and 2 to be easily held in a closed state. By keeping the boards 1 and 2 closed, storage can be made easier without taking up much space. The predetermined angle is, for example, 80 degrees. 【0030】 Each plate material 1 and 2 has grooves 14 and 24, so the clips of the regulatory support equipment equipped with clips can be inserted into the grooves 14 and 24 to attach the regulatory support equipment. This makes it easy to use the regulatory support equipment together with the sign board and reduces the likelihood of losing the regulatory support equipment. The regulatory support equipment, consisting of safety lights or high-visibility lights, can also be used to cope with environmental changes such as at night. During transport, multiple signs can be easily carried by gripping all of their handles 6 together. The handles 6 are designed to be easy to grip even with thick gloves on. When multiple display panels are stacked, the protective material 8 and markings 7 protect the surfaces of the panels 1 and 2 from scratches and other damage. As a result, the reflective sheet 13 is less likely to be damaged, extending the product's lifespan. [Explanation of symbols] 【0031】 1. Board, 2. Board, 3. Spring hinge, 4. Holding part, 5. Pivot point, 6. Handle 7 Marker, 8 Protective material, 11 One long side, 12 The other long side, 13 Reflective sheet, 14 Groove, 21 One long side, 22 The other long side, 24 grooved hole, 41 permanent magnet, 42 iron plate

Claims

[Claim 1] It has a pair of plate members, a connecting part, a biasing part, and a holding part. The aforementioned connecting portion connects the pair of plate materials so that they can be opened and closed at predetermined edges at predetermined inner angles, The biasing portion is provided on the pair of plate members so as to constantly bias the pair of plate members to the open state. The holding portion consists of a pair of ferromagnetic materials that attract each other, and is provided on each of the opposing surfaces of the pair of plate materials so that the pair of plate materials can be joined together in the closed state against the biasing force of the biasing portion. One of the pair of plates has a pivot portion that protrudes from the opposing surface by a length within the distance between the opposing surfaces of the pair of plates in the closed state, The plate material is movably provided so as to release the pair of holding parts by applying pressure to a point of force located on the outer surface of the plate material on the opposite side of the fulcrum from the joint surface of the holding part, in accordance with this principle. The pair of plates are provided so as to be able to stand on their own when opened, with their edges other than the predetermined edge touching the ground. A distinctive sign. [Claim 2] The display board according to claim 1, characterized in that the plate material has grooved holes for inserting and attaching the clip of a regulatory auxiliary device equipped with a clip. [Claim 3] The display board according to claim 1, characterized in that the pair of plate materials are provided with handles having a diameter of 3 mm or more and 20 mm or less and a length of 15 cm or more and 40 cm or less for gripping from above. [Claim 4] The display board according to any one of claims 1 to 3, characterized in that the outer surface of the plate material has a mark indicating the point of force application, and the outer surface has a protective material for protecting the surface.

Images