JP2015031121A - Specific information display of manhole cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable specific information about a manhole cover to be read by using a two-dimensional code without using a special apparatus at a site, for grasping the specific information from a cover surface side in a non-contact manner without opening the cover.SOLUTION: A specific information display comprises: a display piece 13 on which a two-dimensional code 12 recording specific information about a manhole cover is printed; a display piece arrangement surface 20 in which the display piece is arranged on the surface of the manhole cover; and display piece fixing means 21 for covering the display piece and fixing it to the display piece arrangement surface. The fixing means consists of transparent display piece fixing means allowing the two-dimensional code to be read, and the display piece is configured so that its top face is at a safe position lower than the top face of the manhole cover by a few millimeters in a state it is fixed on the display piece arrangement surface.

Description

  The present invention relates to a display device for enabling specific information regarding a manhole cover to be grasped in a non-contact manner from the cover surface side without opening the cover.

  The manhole cover installed on the road is always affected by vehicle traffic, and its performance deteriorates as the surface pattern wears. Therefore, it is necessary to replace the manhole cover before the deterioration progresses. Therefore, unique information is recorded on the manhole cover, and the replacement information is determined by grasping the unique information of the manhole cover. For example, Japanese Patent Application Laid-Open No. 2003-213713 is a conventional technique related to unique information, and the invention of the same number is provided with a mounting hole penetrating a recess into which a display member fits in a lid body, and the display member is attached by an engaging means It has the structure of fitting and attaching to a hole. The display member displays information such as the pipe number, iron lid identification number, laying year, etc. regarding the underground structure having the lid body, displays the decoration of the lid body, and displays the type and type of the lid body. Consists of things. However, according to this method, the number of the display member is merely an index until it gets tired, and it takes time and effort to collate with the ledger.

  As another unique information display method, for example, there is a method of performing information communication wirelessly using a so-called RFID or IC tag. However, in this case, a special reader and lighter are required, and electromagnetic waves are affected by the manhole cover made of ductile cast iron during communication, or an error occurs due to rainwater accumulated on the cover body surface after raining. Therefore, it was necessary to devise a method for attaching the IC tag to the lid body. Even if an IC tag is attached in this way, its location is difficult to visually determine, and since the readable distance is only a few centimeters to 1 meter, it is difficult to accurately align the reader near the IC tag. As a result, it became difficult to read. Prior arts of this type include JP-A-9-33279, JP-A-2007-13507, and registered utility model No. 3120371.

  On the other hand, it is possible to form some kind of display on the lid surface of the manhole cover body, and to record specific information on the display. As a result of investigating this aspect, first, JP-A-10-176368 was found. . However, this is merely to form a recess on a part of the surface of the lid, and attach a small piece on the surface of which a desired mark or the like is adhered or detachable. Further, JP 2010-168731 A is a lid for the purpose of providing a lid for a bag or manhole, which is capable of supporting various designs while maintaining an anti-slip function and hardly causes discoloration. The invention includes a printing layer formed on the upper surface of the printing layer and a coating layer formed on the upper surface of the printing layer and having water repellency. However, it has nothing to do with the technical matters that make it possible to grasp the specific information about the manhole cover in a non-contact manner, and no suggestion has been found at this time. Although some characters such as “sewage” and “rainwater” are cast on the surface of the iron lid as a part of the pipeline information, the amount of information is not sufficient.

JP 2003-213713 A JP-A-9-33279 JP2007-13507 Registered Utility Model No. 3120371 JP-A-10-176368 JP 2010-168731 A

  The present invention has been made in view of the above circumstances, and its problem is to use a two-dimensional code in order to make it possible to grasp specific information about the manhole cover from the lid surface side without opening the lid, Therefore, it is possible to grasp the specific information without using a special device. Another object of the present invention is to make it easy to rewrite the latest information even if there is a change in the unique information regarding the manhole cover. Another object of the present invention is to delay deterioration due to ultraviolet rays by covering a display piece on which a two-dimensional code recording unique information about a manhole cover is printed with a transparent resin capable of blocking ultraviolet rays, and Moreover, it is providing the specific information display apparatus of the manhole cover which can prevent the water leak from a display piece attachment part.

  In order to solve the above-mentioned problem, the present invention provides a display piece on which a two-dimensional code recording unique information about a manhole cover is printed as a display device that enables non-contact recognition of unique information about the manhole cover. A display piece arrangement surface on which the display piece is arranged on the surface of the manhole cover, and a display piece fixing means for covering and fixing the display piece to the display piece arrangement surface. In the state where the display piece is fixed to the display piece arrangement surface, the upper surface of the display piece is in a safe position that is several millimeters lower than the upper surface of the manhole cover. It is a means of configuring.

  The purpose of the present invention is to make it possible to grasp specific information about the manhole cover in a non-contact manner. In particular, it is possible to accurately use a general device that is easily available without using a special device. It is to be able to grasp. For this purpose, the present invention uses a display piece on which a two-dimensional code in which unique information about the manhole cover is recorded is printed. As the two-dimensional code, it is desirable to use a matrix type two-dimensional code known by the name of QR code (registered trademark). The contents of the unique information are the same as those described above. For example, in local government relations, items described in a book called a sewer ledger are targeted.

  This type of two-dimensional code can be read by many mobile phones with cameras, does not need to be read by a special reader, can be easily created using a personal computer, and can be printed using an inkjet printer. Can be printed. This type of printed matter requires many processes such as weather-resistant paper, ink, and UV-proof laminate that will be used outdoors for a long time. There were not a few. However, according to the present invention, weather resistance can be obtained by covering the display piece. Therefore, a display piece produced using a general one such as an ink jet printer can be used. Moreover, since the above two-dimensional code can be read by a general mobile phone, there is no cost problem in implementing the present invention, or there is very little.

  The display piece is arranged on a display piece arrangement surface on the surface of the manhole cover. The display piece arrangement surface is naturally the surface on the lid body side, but in addition to that, it means that the display piece arrangement surface is not easily soiled or damaged, and is suitable for being arranged so that it can be easily read. For this reason, when the display piece is fixed to the display piece arrangement surface, the upper surface of the display piece is at a safe position lower by several millimeters than the upper surface of the manhole cover. The safe position means a position that is safe against dirt and damage.

  The “several millimeters” is optimally set to −4 mm, for example. The reason is that, as a typical anti-slip surface pattern formed on the lid body, for example, in Tokyo Metropolitan Sewer Design Standard, there is a bottom surface at a depth of approximately 6 mm from the lid body surface (uppermost surface). In addition, it is mentioned that the surface pattern is described as the replacement time when 3 mm is worn. That is, even if the use limit of the lid body is -3 mm, the display piece position (-4 mm) does not become higher than the lid body surface when worn, and the printing surface of the two-dimensional code is not worn. is there. In addition, according to the “Sewer Manhole Lid Maintenance Manual (draft)” issued by the Japan Sewerage Association, the wear limit for maintaining the anti-slip effect of the manhole cover is about -3 mm even if the surface pattern depth changes. Since it is described as the use limit, it is significant to optimize −4 mm from the upper surface of the manhole cover.

  The display piece is attached to the lid body via a support member, the support member has an engaging means that fits into an attachment hole that penetrates the lid body, and the display piece fixing means can block ultraviolet rays. It consists of transparent resin, and the said transparent resin can take the structure that it serves as the sealing means with respect to the water leak from the said attachment hole. When the through-hole formed in the lid body is used as the display piece fixing means, there is a risk that rainwater or the like may enter the manhole, but there is also an advantage that water leakage can be prevented by filling the resin.

  Various known methods can be applied as means for fixing the display piece to the display piece arrangement surface using the display piece fixing means, but it is more convenient if the display piece can be removed once and replaced when damaged. is there. For example, according to the method of fixing the display piece to the surface of the lid main body using a resin, it is easy to implement and can be easily removed. Matters recorded on the display piece may be rewritten with unique information for later update, etc., which is also highly effective.

  Since the present invention is configured and operates as described above, a two-dimensional code is used to make it possible to grasp specific information about the manhole cover in a non-contact manner. There exists an effect that the said specific information can be grasped | ascertained. In addition, according to the present invention, even if the specific information regarding the manhole cover is changed, the display piece can be replaced and easily rewritten with the latest information. In addition, according to the present invention, the display surface on which the two-dimensional code recording the unique information on the manhole cover is printed with a transparent resin or the like capable of blocking ultraviolet rays, thereby delaying the printing surface from degradation due to ultraviolet rays. And the specific information display apparatus of the manhole cover which can prevent the water leak from a display piece attachment part can be provided.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows an example 1 of a manhole cover specific information display device 10 according to the present invention, in which a part of a manhole cover including a circular cover body 11 is broken. The apparatus 10 of the present invention includes a display piece 13 on which a two-dimensional code 12 in which unique information about a manhole cover is recorded, a display piece arrangement surface 20 on which the display piece 13 is arranged on the surface of the manhole cover, and the display Display piece fixing means 21 for fixing the piece 13 to the display piece arrangement surface 20 is provided. The unique information includes items described in the above-described sewer ledger, and is formed as follows.

  As the two-dimensional code 12, a matrix type two-dimensional code known by the name of the above-described QR code (registered trademark) is used. The two-dimensional code 12 used in the present invention is created by a manager of a manhole cover, for example, using a personal computer, and can be conveniently printed using an ink jet printer. Accordingly, the display piece 13 on which the two-dimensional code 12 is printed is often a piece of paper, but other printable synthetic paper (resin-impregnated paper), plastic sheets, films, and the like can also be used. (Note that the printing section is shown in FIG. 3 by reference numeral 13a).

  In the illustrated example, the display piece 13 is attached to the lid body 11 via the support member 14. The support member 14 has a plate-like support portion 15 and a shaft portion 16 extending in a cross shape from the support portion 15, and engaging means for fitting into an attachment hole 19 penetrating the lid body 11. It is composed. That is, the shaft portion 16 has a length that projects from the back surface of the lid body 11 with the support portion 15 in contact with the lid body side, and the shaft portion 16 that projects from the back surface projects radially outward. A plurality of ridges are provided as the projecting fitting means 17 to be projected.

  In order to attach the support member 14 to the manhole cover, a necessary number of recesses 18 are provided in a portion near the edge of the surface of the lid body 11, and an attachment hole 19 penetrating the lid body 11 is formed in each bottom. (See FIG. 2). Therefore, the support member 14 is attached by press-fitting the shaft portion 16 into the attachment hole 19. In the case of the example of FIG. 1, the bottom surface 18 a of the recess 18 corresponds to the display piece arrangement surface 20. Each mounting hole 19 has an introduction portion 19a that is shaped into a slit shape and facilitates forcible fitting. The introduction portion 19a also serves as a draft from the mold when the lid body 11 is cast.

  In FIG. 1, it is described that a plurality of display pieces 13 are attached, but there is no problem with one display piece 13. For example, if the amount of information contained is large and cannot be printed with a single two-dimensional code, the URL, which is an address on the Internet, is described on the display piece 13, and the written URL is displayed using a mobile phone such as a smartphone. By accessing, you can arrive at a huge amount of information. However, measures against water leakage are taken as appropriate, such as plugging the recesses 18 to which the display pieces 13 are not attached.

  When the display piece 13 is fixed to the display piece arrangement surface 20, the upper surface of the display piece 13 is arranged at a safe position lower than the upper surface 11a of the lid body by several millimeters. The above "several millimeters" is D, specifically about 4 mm, and the thickness d of the support portion 15 is about 2 mm. In the Tokyo sewer design standard as a typical anti-slip surface pattern formed on the lid body 11, there is a bottom surface at a depth of approximately 6 mm from the lid body surface (uppermost surface), and the display piece in this embodiment The bottom surface 18a of the recess 18 which is the arrangement surface 20 is also at a depth of about 6 mm (see FIG. 3). Therefore, when the surface pattern is worn by 3 mm, the replacement time is reached. Therefore, the position (−4 mm) at which the surface pattern does not become higher than the lid main body surface at the time of wear becomes -3 mm, which is the use limit of the lid main body. It will be a safe position to place.

  The display piece 13 is fixed to the display piece arrangement surface 20 using the display piece fixing means 21. Various known methods can be applied as the fixing means. In the embodiment, as shown in FIGS. 2 and 3, a resin is used as the display piece fixing means 21, and the display piece 13 is filled and wrapped so as to be fixed to the lid body surface. The display piece fixing means 21 is a part of a configuration that can be replaced by hitting the shaft portion 16 from the back surface of the lid body and removing the display piece 13 together with the support member when damaged. The resin is made of a transparent resin capable of blocking ultraviolet light, and non-yellowing polyurethane resin, modified epoxy resin, or the like can be used as the ultraviolet light blocking resin. The display piece fixing means 21 made of the transparent resin also serves as a sealing means against water leakage from the mounting hole.

  Next, with reference to FIG. 4 and FIG. 5, the specific information display device 22 of the manhole cover of Example 2 according to the present invention is shown. In Example 2, the same display piece 13 as in Example 1 is used, but this is attached to a resin plate 24 comprising a support portion 23 having the same thickness d as in FIG. The resin plate 24 is attached to the bottom surface 25a of the concave portion 25 on the surface of a certain lid body by an adhesive member 26, and is filled with resin as the display piece fixing means 21 so as to enclose the display piece 13. In the case of Example 2, the display piece 13 has a shape slightly smaller than the shape of the concave portion 25 of the pattern element constituting the surface pattern of the manhole cover so that it does not float from the bottom surface 25a of the concave portion 25 during bonding.

  Since the manhole cover is made of a casting made of ductile cast iron or the like, the manhole cover has a small unevenness on the surface, resulting in a so-called satin cast surface. For this reason, even if the adhesive that exerts strong adhesive force for large-area bonding is the adhesive force of the sticker-like display piece 13 that is a printed matter attached to the back surface, it adheres with a slight convex part on the matte-like cast skin Therefore, the adhesive force is small and it is easy to peel off. Therefore, in Example 2, the necessary fixing force is secured by attaching the sticker-like display piece 13 to the resin plate 24 having a flat surface and giving sufficient adhesion strength (see FIG. 5). For fixing the resin plate 24 and the surface of the lid main body 11, various adhesive members 26 can be freely selected, so that strong fixing is possible.

  In addition, when the display piece 13 is replaced, the resin 21 around the display piece is peeled off using a tool such as a screwdriver, but if peeling is difficult, heating is performed using a small gas burner or the like to soften the resin. It may be possible to facilitate peeling. The above-described method relating to the replacement of the display piece 13 can be applied to the apparatus 10 of Example 1 as well as Example 2.

  Furthermore, with reference to FIG. 6, the specific information display device 27 of the manhole cover of Example 3 according to the present invention is shown. In Example 3, the configuration until the display piece 13 is fixed to the bottom surface 28a of the concave portion 28 of the lid body 11 serving as the display piece arrangement surface 20 via the support member 14 is the same as that of Example 1. However, Example 3 is different in that a cap 29 that can be easily detached is used as a part of the display piece fixing means 30. The cap 29 is made of a resin having an ultraviolet blocking effect as in Examples 1 and 2. However, since it is detachable, it is not necessary to see through and an opaque resin can be used. For this reason, dark color resin can be used for the cap 29, and the ultraviolet blocking effect can be further enhanced.

  According to the present invention configured as described above, specific information regarding the manhole cover can be grasped in a non-contact manner from the cover surface side without opening the cover, and special equipment and instruments are used for the implementation. It will be understood that it is not necessary. For non-contact exploration, it may be necessary to cover the display piece 13 with a transparent resin, but using a resin having an ultraviolet blocking effect may cause the printing of the two-dimensional code 12 to fade in about several years. Can be prevented. Since the service life of the manhole iron cover is 15 years in the roadway portion, the display piece 13 may be replaced once or twice before the manhole cover is discarded, and there is no practical problem.

  In addition, as described above, the inspection by the manhole manager is remarkably facilitated in operation and the obtained information is accurate. When the manhole cover is replaced and the specific information content is changed, the two-dimensional code 12 can be easily created and printed on the administrator side, and the display piece 13 can be exchanged to obtain the latest information. Can be easily migrated. Furthermore, even if the general public accidentally notices damage to the manhole cover, etc. as well as the administrator, the information recorded on the display piece 13 can be read using a mobile phone on hand, etc. It is possible to respond quickly by checking and confirming the above.

It is a perspective view which shows Example 1 of the specific information display apparatus of the manhole cover which concerns on this invention. It is sectional drawing which shows the principal part of an apparatus same as the above. It is sectional drawing which expands and shows an apparatus same as the above. It is a top view which similarly shows Example 2 of the apparatus of this invention. It is sectional drawing which shows the principal part of an apparatus same as the above. It is a top view which similarly shows Example 3 of the apparatus of this invention.

DESCRIPTION OF SYMBOLS 10 Manhole cover specific information display apparatus 11 Cover body 12 Two-dimensional code 13 Display piece 14 Support member 15 Support part 16 Shaft part 17 Fitting means 18 Recess 19 Mounting hole 20 Display piece arrangement surface 21 Display piece fixing means 22 Display hole fixing means 22 Unique information display device 23 Support portion 24 Resin plate 25 Recessed portion 26 Adhesive member 27 Unique information display device for manhole cover 28 Recessed portion 29 Cap 30 Display piece fixing means

Claims (3)

It is a display device for making it possible to grasp specific information about the manhole cover from the cover surface side without opening the cover,
A display piece on which a two-dimensional code recording specific information about the manhole cover is printed,
A display piece arrangement surface on which the display piece is arranged on the surface of the manhole cover;
A display piece fixing means for covering the display piece and fixing it to the display piece arrangement surface;
The fixing means includes a transparent display piece fixing means that enables reading of a two-dimensional code, and the upper surface of the display piece is lower than the upper surface of the manhole cover by several millimeters in a state where the display piece is fixed to the display piece arrangement surface. A unique information display device for a manhole cover configured to be in a safe position. The display piece is attached to the lid body via a support member, the support member has an engaging means that fits into an attachment hole that penetrates the lid body, and the display piece fixing means is a transparent resin capable of blocking ultraviolet rays. 2. The unique information display device for a manhole cover according to claim 1, wherein the transparent resin also serves as a sealing means against water leakage from the mounting hole. 3. The specific information display device for a manhole cover according to claim 1 or 2, wherein the display piece fixing means is replaceable when damaged, and can be easily removed by breaking for replacement or detachable by fitting.

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