JP2014164251A - Spiral indicator element and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spiral indicator element capable of preventing positional deviation and falling.SOLUTION: A spiral indicator element mounted on a long object 1 to be attached and formed of a resin having a flexural elasticity modulus of 800 MPa or more comprises: a base material 2 having a shape held spiral; and a reflector 3 fixed to an outer surface of the base material 2 and reflecting light. The inner diameter of the base material 2 is set to be smaller than that of the outer diameter of the object to be attached.

Description

  The present invention relates to a spiral display body and a manufacturing method thereof.

  In general, there are utility poles, guardrails, and the like on the side of the road through which automobiles pass, but there are cases where it is difficult to see the poles such as utility poles when passing at night. Therefore, in order to alert the driver of a car or the like to the presence of a columnar body such as a power pole beside a road, a spiral display body as described in Patent Document 1 is attached to the columnar body such as a power pole. Has been proposed.

  The spiral display body includes a long belt member, a reflecting portion provided on the outer surface of the belt member, a double-sided tape, and a band-shaped fastening component that fastens and holds the end of the belt member. I have. The belt member is made of an elastic material such as medium density polyethylene that can be wound spirally. The belt member is spirally wound around the outer peripheral surface of a columnar body such as an electric pole, and is bonded to the columnar body such as an electric pole via a double-sided tape. Further, the belt member is attached to the end of the belt member and the end of the belt member. By connecting between the opposing parts with a fastening component, it is held on the outer surface of a columnar body such as a utility pole.

JP 2006-18088 A

  However, in the spiral display disclosed in Patent Document 1, the belt member is made of an elastic material such as medium density polyethylene that can be spirally wound, and has a curl hook, but its own rigidity. Therefore, it is necessary to adhere a long belt member to the surface of a columnar body such as an electric pole via a double-sided tape, and to clamp and hold the end of the belt member using a fastening component. Therefore, if the adhesive force by the double-sided tape and the tightening by the tightening parts are not sufficient, the spiral display body may fall off from the columnar body such as the electric pole. In particular, if dust adheres to the surface of the utility pole, the adhesive strength decreases.

  Therefore, the present invention has been made in view of such points, and an object of the present invention is to provide a spiral display body capable of preventing displacement and dropout.

  In order to achieve the above object, the spiral display body of the present invention is a spiral display body that is attached to a long attachment object, and is made of a resin having a characteristic that the flexural modulus is 800 MPa or more, and is spiral. A base material whose shape is held on the outer surface of the base material, and a reflective material that is fixed to the outer surface of the base material and reflects light. The inner diameter of the base material is smaller than the outer diameter of the attachment target. It is characterized by being set as follows.

  In such a configuration, the base material is made of a resin having a bending elastic modulus of 800 MPa or more so that high shape retention can be obtained by having higher bending elasticity and rigidity than the conventional spiral display body. The shape is held in a shape. Moreover, since the inner diameter of the base material is set to be smaller than the outer diameter of the mounting target, the base material elastically deforms when the base material is mounted on the mounting target. Retained. Therefore, due to the shape retention of the base material due to the elasticity and bending rigidity of the base material, the base material is elastically deformed and tightens the outer peripheral surface of the mounting target, thereby slipping off the outer peripheral surface of the mounting target. Can be prevented.

  The flexural modulus is preferably 2200 MPa or less.

  If the flexural modulus of the base material is 800 to 2200 MPa, the mounting target is tightened and fixed by the shape retention of the base member after mounting only by mounting the spiral display body on the outer peripheral surface of the mounting target. Thus, as in the prior art, the work of bonding the spiral display body to the outer peripheral surface to be attached to the columnar body or fastening the end of the spiral display body with a fastening part is not necessary. Therefore, it is possible to reduce the work process and greatly improve the mounting workability.

  Moreover, it is preferable to further include a fiber layer that reinforces the base material.

  According to such a configuration, the base material can be reinforced by the fiber layer, and even when the base member is formed using a resin having high bending rigidity, the base material is cracked when the base member is bent or stretched. It is possible to reduce the fear. Thereby, even if it spreads at the time of attachment work, it is possible to reduce significantly the possibility that a base material may crack.

  Furthermore, the fiber layer is preferably fixed to the inner surface of the base material.

  According to such a configuration, since the fiber layer is fixed to the inner surface of the base material, the fiber layer is interposed between the base material and the mounting target when the spiral display body is mounted on the mounting target. It is possible to more surely prevent the displacement of the spiral display body.

  Moreover, it is preferable to further include a fusible resin layer for fusing the reflecting material to the base material.

  According to such a configuration, when the base body is formed into a spiral shape in a molten state, it is possible to simultaneously fuse the reflective material to the base material by the fusible resin layer. Thereby, the manufacturing process can be reduced.

  Furthermore, the width of the reflective material is in the range of 0.1 to 0.8 times the width of the base material, and the reflective material is continuously fixed to the outer surface of the base material, It is preferable that the base material has a different color.

  According to such a configuration, it is possible to visually recognize different colors of the reflective material and the base material at the same time, and it is possible to form a difference in color tone or brightness between the base material and the reflective material. Therefore, the visibility of the spiral display body can be improved.

  Furthermore, the base material is preferably dark.

  According to such a configuration, since the base material is dark, when the spiral display body is attached to an attachment object having a bright color such as white, the difference in brightness between the attachment object color and the base material becomes significant. Therefore, the visibility is further improved.

  Furthermore, it is preferable that the attachment target is a columnar body installed on a road shoulder.

  According to this configuration, it is possible to guide the driver's line of sight on the road by using the spiral display body by attaching the spiral display body to the columnar body installed on the shoulder of the road as an attachment target. become. In particular, the spiral display body is omnidirectional, and the spiral display body can be viewed from any direction around the columnar body. Compared with the guidance display, the visibility can be greatly improved.

  Furthermore, it is preferable to further include a fixing member for fixing the base material to the columnar body.

  According to such a configuration, since the base member is fixed to the columnar body by the fixing member, it is possible to prevent the spiral display body from being stolen.

  Further, the base body is formed in a spiral shape in a molten state, the reflector is fused to the outer surface of the base body, and then the base body is solidified in a state in which the shape of the base body is maintained in a spiral shape. Is preferred.

  According to such a configuration, a spiral display body having a high flexural modulus and a high rigidity can be continuously manufactured. Therefore, the spiral display body can be mass-produced in a short time with a small number of manufacturing processes.

  Further, the manufacturing method of the spiral display body in the present invention is a manufacturing method of the spiral display body, in which the base body is formed into a spiral shape in a molten state, and the reflector is disposed outside the base body. It includes a molding step for fusing to the surface and a shape holding step for solidifying the base body and holding the shape in a spiral shape.

  According to such a feature, the spiral display body having a high flexural modulus and high rigidity can be continuously manufactured. Therefore, the spiral display body can be mass-produced in a short time with a small number of manufacturing steps.

  In the molding step, it is preferable that a fiber layer is attached to the inner surface of the base body when the base body is spirally molded in a molten state.

  According to this feature, when the base material is solidified after the fiber layer is adhered to the inner surface of the base material while forming the base material into a spiral shape in a molten state, the fiber layer causes wrinkles on the inner surface of the base material. Since it is prevented from occurring, uneven distribution of the material of the base material is prevented, and as a result, the durability of the spiral display body is improved.

  As described above, according to the spiral display body of the present invention, it is possible to prevent displacement and dropout from the attachment target. Moreover, the mounting workability can be improved.

  In addition, according to the method for manufacturing a spiral display body of the present invention, it is possible to mass-produce the spiral display body continuously in a short time with a small number of manufacturing processes.

It is a front view of the spiral display body which concerns on embodiment of this invention. It is sectional drawing of the helical display body of FIG. It is explanatory drawing which shows the state which attached the helical display body of FIG. 1 to the outer surface of a straight pipe | tube. It is explanatory drawing which shows the state which attached the spiral display body of FIG. 1 to the support | pillar of the guard rail beside a road. It is explanatory drawing which shows the state which attached the helical display body of FIG. 1 to the outer surface of the pipe | tube bent in the arch shape. It is explanatory drawing which shows the manufacturing method of the helical display body of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1-3, the spiral display body 1 which concerns on this embodiment is the spiral display body 1 with which a long attachment target (Straight pipe 21 etc. of FIG. 3 etc.) is mounted | worn.

  The spiral display body 1 includes a base material 2 made of resin, a reflective material 3, a fusible resin layer 4, a fiber layer 5, and a cover layer 6.

  The base material 2 is a band-shaped member having a flexural modulus of 800 to 2200 MPa and a high hardness, specifically, a resin having a durometer (type A) hardness of 65 degrees or more, for example, a high density High-density polyethylene is preferable because it is made of a thermoplastic resin such as polyethylene, polypropylene, polyamide, or polyvinyl chloride, and is particularly excellent in weather resistance, economy, and fusion with a general-purpose hot melt material. The base material 2 is held in a spiral shape after being extruded and formed into a strip shape in a molten state. The base material 2 has sufficient shape retention by having the above-described bending elastic modulus and hardness, so that it can maintain a spiral shape even after being wound around and fixed to the straight pipe 21.

  As the bending elastic modulus 800 to 2200 MPa, the bending elastic modulus measured in accordance with the measurement standard of JIS K7171 is adopted.

  When the durometer (type A) hardness is 65 degrees, the durometer (type A) hardness measured in accordance with the measurement standard of JIS K7215 is adopted.

  Here, when the bending elastic modulus is less than 800 MPa, sufficient tightening strength cannot be obtained when winding and fixing to an object to be attached such as the straight pipe 21. On the other hand, when the bending elastic modulus is larger than 2200 MPa, the operator can wrap and fix. Since it becomes difficult to perform the operation, as described above, the base material 2 is sufficient when it is wound around and fixed to the attachment object such as the straight pipe 21 as long as the bending elastic modulus is a resin having a characteristic of 800 to 2200 MPa. As a result, the tightening strength can be obtained, and the operator can easily perform the winding and fixing work.

  When the base material 2 is wound around the straight pipe 21 to be attached, the base material 2 is elastically deformed so that the straight pipe 21 can be tightened. 21 is set to be smaller than the outer diameter D2 of the base 21. In particular, the inner diameter D1 of the base material 2 is set to be 95 to 60% of the outer diameter D2 of the straight pipe 21. Is preferred. Here, if the inner diameter D1 of the base material 2 is greater than 95% with respect to the outer diameter D2 of the straight pipe 21, the strength of the base material 2 tightening the straight pipe 21 is not sufficient, while the inner diameter D1 of the base material 2 is If it is less than 60% with respect to the outer diameter D2 of the straight pipe 21, when the spiral display body 1 is wound around the straight pipe 21, the degree of deformation of the base material 2 increases and the base material 2 may break. Therefore, as described above, if the inner diameter D1 of the base material 2 is set so as to be 95 to 60% of the outer diameter D2 of the straight pipe 21, the base material 2 has the straight pipe 21. A sufficient strength for tightening can be obtained, and there is no possibility that the base material 2 will break when it is wound around the straight pipe 21.

  Further, the spiral shape of the base material 2 is a shape in which the portions adjacent to each other in the longitudinal direction in the base material 2 are separated from each other by a pitch P, thereby making it easy to bend or stretch the base material 2. Is possible.

  Although the cross-sectional shape of the base material 2 is not particularly limited in the present invention, it may be a flat cross-sectional shape that is longer in the width direction than the thickness depending on the mounting object and the purpose of use, for example, the corners are rounded. Rectangle, rectangle with a curved surface at the end, a rectangle with a thick center and rounded corners at both ends, a rectangle with rounded corners on either the top or bottom, or an ellipse A cross-sectional shape such as

  The reflective material 3 is a layer that is fixed to the outer surface of the base material 2 and reflects light. Specifically, as shown in FIG. 2, the reflective material 3 includes a transparent surface resin layer 7, glass beads 8, and a reflective layer 9. Glass beads 8 are dispersed on the lower surface of the surface resin layer 7. The reflective layer 9 is formed below the surface resin layer 7 so as to sandwich the glass beads 8 with the surface resin layer 7.

  The transparent surface resin layer 7 is formed of, for example, a one-component curable soft polyurethane resin. Moreover, the glass bead 8 consists of a high refractive index glass bead, for example. The reflective layer 9 is formed by, for example, aluminum vapor deposition.

  Since the reflection layer 9 configured as described above is arranged so that the glass beads 8 are in contact with the reflection layer 9, the reflection layer 9 has a characteristic of retroreflection (that is, incident light is reflected in the incident direction).

  In the present invention, the reflecting material 3 may be a layer that is fixed to the outer surface of the base material 2 and reflects light, and the shape, structure, or material is not particularly limited.

  The width W2 of the reflective material 3 is set to be in a range of 0.1 to 0.8 times the width W1 of the base material 2 so that the base material 2 and the reflective material 3 can be seen simultaneously.

  In addition, the reflective material 3 and the base material 2 have different colors, and a color that can clearly distinguish the reflective material 3 and the base material 2 from each other and a color difference (contrast) can be obtained. It is preferable that these are combinations. For example, the base material 2 is preferably a dark color such as black or brown, and the reflective material 3 is preferably a light color or metallic color such as yellow or silver. In particular, the base material 2 is preferably black in that a clear contrast with the reflecting material 3 is obtained and deterioration due to ultraviolet rays is suppressed.

  The reflective material 3 is continuously fixed to the outer surface of the base material 2 by a fusible resin layer 4. The fusible resin layer 4 is a layer that fuses the reflective material 3 to the base material 2. The fusible resin layer 4 is made of a material having heat fusibility, for example, a hot melt material such as a modified olefin resin.

  The fiber layer 5 is a layer that reinforces the base material 2 and is made of, for example, a non-woven fabric manufactured using a core-sheath polyester fiber. The core-sheath polyester fiber includes a polyester core and a low-melting modified polyethylene sheath as a sheath surrounding the outer periphery of the core. The sheath of the modified polyethylene has good compatibility in that it is easily heat-sealed to the base material 2 made of a resin such as polyethylene.

  The fiber layer 5 is fixed to the inner surface of the spiral base material 2. Specifically, when the base material 2 is formed into a spiral shape in a molten state, the modified polyethylene contained in the fiber layer 5 is melted and bonded to the base material 2, so that the fiber layer 5 has an inner periphery of the base material 2. It is fused to the surface.

  The cover layer 6 is bonded to the fiber layer 5 on the surface of the fiber layer 5 opposite to the surface fixed to the base material 2, that is, on the inner peripheral surface side of the spiral display body 1. Since the cover layer 6 is arranged on the inner peripheral surface side of the spiral display body 1, the cover layer 6 is a fiber in a state where the spiral display body 1 is wound around and fixed to an attachment target such as the straight pipe 21. It is interposed between the layer 5 and the attachment object such as the straight pipe 21, thereby preventing the fiber layer 5 from directly contacting the attachment object such as the straight pipe 21 and preventing the fiber layer 5 from being worn or damaged. It is possible.

  Since the spiral display body 1 configured as described above can be easily fixed by being wound around the outer peripheral surface of a long attachment object, it can be fixed to various attachment objects. For example, as shown in FIG. 4, it can be attached to a guard rail 30 installed on a shoulder 41 of the road 40. The guardrail 30 includes a corrugated sheet 31 and a plurality of support columns 32 that support the corrugated sheet 31, and each support column 32 is erected on the ground along the road shoulder 41. By attaching the spiral display body 1 to all or some of the columns 32, it becomes possible to guide the line of sight of the driver of the automobile traveling on the road 40 in the extending direction of the road 40 by the spiral display body 1.

  When the spiral display body 1 is mounted on the support column 32 of the guard rail 30, the operator widens the inner peripheral surface of the spiral display body 1 and then expands the spiral display body 1 to a predetermined position of the support column 32. Just wrap around the height. The spiral display body 1 can be easily fixed to a predetermined height of the support 32 by tightening the support 32 by the elasticity of the base material 2. In addition, since the base material 2 of the spiral display body 1 exhibits sufficient tightening strength due to the above-described bending elastic modulus and hardness, there is a possibility that the spiral display body 1 may fall off the support column 32 even if the spiral display body 1 is installed for a long period of time. Absent.

  Here, as an experimental example, Table 1 shows the results of examining the relationship between the bending elastic modulus of the base material of the spiral display body and the drop distance that slides when wound around the guard rail column.

  In addition, the conditions of the above-mentioned experiment are that the spiral display body is a spiral display body having an inner diameter of 84 mm, a base material thickness of 5 mm, and 4 turns (4 pitches). Prepared in 5 stages (200, 350, 500, 1000, 1500 (MPa)), and these spiral display bodies were set to a height of 300 mm from the ground with respect to the guard rail column having an outer diameter of 114 mm. The spiral display bodies were allowed to stand outdoors for one week in an environment of winding and average temperature of 25 ° C., and then the falling distance of these spiral display bodies was confirmed. The results are shown in Table 1 below.

  As can be seen from Table 1, when the flexural modulus of the base material was 200 MPa, 350 MPa, and 500 MPa, it was confirmed that the spiral display body slipped off the support column, but the flexural modulus of the base material was 1000 MPa. In the case of 1500 MPa, it was confirmed that the spiral display body did not slide off the support.

  Further, the spiral display body 1 of the present embodiment further includes an anti-theft screw 10 as a fixing member for fixing the base material 2 to the column 32 of the guard rail 30 as shown in FIG. ing. The anti-theft screw 10 is a tap screw or the like. After the base body 2 is wound around and fixed to the support column 32, the base body 2 is fixed to the support column 32 by screwing the screw 10 while making a hole in the support column 32 while penetrating the end of the base body 2. It is possible to prevent the spiral display body 1 from being stolen, that is, to prevent the spiral display body 1 from being intentionally removed.

  In addition, since the spiral shape of the base material 2 in the present embodiment is a shape in which adjacent pitch portions of the base material 2 are separated from each other, the base material 2 can be easily bent or stretched. Therefore, not only the straight pipe 21 as described above, but also cylindrical bodies of various shapes, for example, the spiral display body 1 on the outer peripheral surface of the curved bent pipe 22 as shown in FIG. Can be wound and fixed. Further, as other cylindrical bodies, the spiral display body 1 can be wound around and fixed to an outer peripheral surface such as a flexible tube, a bent tube, a deformed tube, a cross-shaped tube, or a T-shaped tube.

(Description of manufacturing method)
In the spiral display 1, the resin base material 2 is formed in a spiral shape in a molten state, the reflective material 3 is fused to the outer surface of the base material 2, and the fiber layer 5 is the cover layer 6. The base material 2 is fused to the inner peripheral surface of the base material 2 in a state of being attached to the base material 2 and then solidified in a state where the base material 2 is held in a spiral shape.

  That is, in the manufacturing method of the spiral display body 1 described above, the base material 2 is formed into a spiral shape in a molten state, the reflective material 3 is fused to the outer surface of the base material 2, and the fiber layer 5 is covered. It includes a molding process in which the base material 2 is fused to the inner peripheral surface of the base material 2 in a state of being attached to the layer 6, and a shape maintaining process in which the base material 2 is solidified and held in a spiral shape.

  Specifically, the spiral display body 1 is manufactured by the following procedure. As shown in FIG. 6, first, a cylindrical mandrel 52 extending in the horizontal direction is advanced in the direction of the rotation axis C while being swung around the rotation axis C using a swirler 53. Specifically, the revolving machine 53 has an endless belt 53a extending in the direction of arrow A inclined by an angle θ (for example, 50 degrees) with respect to the rotation axis C. The endless belt 53a of the revolving machine 53 travels in parallel with the direction of the arrow A in FIG. 5 while contacting the outer peripheral surface of the mandrel 52, so that the rotation axis C extends while the mandrel 52 is swung around the rotation axis C. This allows the mandrel 52 to be spirally rotated in the direction of arrow B. Thereby, it is possible to adjust the moving speed of the mandrel 52 in the length direction so that the width of the base material 2 does not overlap with the adjacent portion in the axial direction.

  Then, the base material 2 made of high-density polyethylene is extruded in a band shape in a state of being heated and melted from the extrusion molding die 51 toward the outer peripheral surface of the mandrel 52 that is spirally rotated as described above. Is wound spirally around the outer surface of the mandrel 52 from the vicinity of the end of the mandrel 52 on the swivel machine 53 side in a state where the surface temperature is high (about 170 ° C.). At the same time, a band-shaped body (for example, a reflective band-shaped body manufactured by Unitikaspur Cluster Co., Ltd.) in which the fusible resin layer 4 is formed on one surface of the band-shaped reflecting material 3 is used. It winds so that it may pass through the center of the width direction of the outer peripheral surface of the base material 2 so that the material 2 may be contacted. At this time, the reflective material 3 is continuously fused to the base material 2 by the fusible resin layer 4. At the same time, the fiber tape 11 in which the fiber layer 5 made of the nonwoven fabric of the core-sheath polyester fiber and the cover layer 6 are laminated is spirally wound around the mandrel 52 so as to be on the inner peripheral surface side of the base material 2. The modified polyethylene contained in the fiber layer 5 is fused to the base material 2 by bringing the fiber layer 5 into contact with the high-temperature base material 2. At this time, the cover layer 6 is disposed so as to contact the outer peripheral surface of the mandrel 52.

  As described above, when the reflecting material 3, the base material 2, the fiber layer 5 and the cover layer 6 are laminated, the base material is spirally rotated in the direction of arrow B while being spirally wound around the mandrel 52. 2, in the section from the position where the reflector 3 and the fiber tape 11 (the fiber layer 5 and the cover layer 6) have been wound around the mandrel 52 to the end of the mandrel 52 opposite to the swivel 53, By cooling the base material 2, the reflective material 3 and the fiber layer 5 from the outside by water cooling, air cooling or the like, the base material 2 is solidified while maintaining a spiral shape, and the reflective material 3, the base material 2, When the fusible resin layer 4 is solidified, the adhesion of the reflector 3 to the base material 2 is completed, and the modified polyethylene contained in the fiber layer 5 is solidified. Thus the adhesive is completed to the base material 2 fibrous layer 5. Thereafter, the mandrel 52 is extracted from the inside of the spiral display body 1 to complete the manufacture of the spiral display body 1.

(Feature)
(1)
The spiral display body 1 of the present embodiment is made of a resin having a characteristic with a flexural modulus of 800 MPa or more, and is fixed to the outer surface of the base material 2 and the base material 2 that are held in a spiral shape. And an inner diameter D1 of the base material 2 is set to be smaller than an outer diameter D2 of the straight pipe 21 to be attached. Therefore, when the spiral display body 1 is mounted on the outer peripheral surface of a long attachment object, the base material 2 is caused by the shape retention of the base material 2 due to the elasticity and bending rigidity of the base material 2. The outer peripheral surface of the attachment target can be tightened by elastic deformation in a direction in which the inner diameter D1 becomes smaller than the outer diameter D2 of the attachment target. Thereby, it is possible to prevent the spiral display body 1 from slipping off from the outer peripheral surface of the attachment target. Thereby, the helical display body 1 can exhibit a tightening force that does not slide off the attachment target for a long period of time.

  In particular, in the present embodiment, since the flexural modulus of the base material 2 is 800 to 2200 MPa, only the work of mounting the spiral display body 1 on the outer peripheral surface of the mounting target is performed by the shape retention of the base member after mounting. Since the object to be attached is fastened and fixed, the work of attaching the spiral display body to the outer peripheral surface of the object to be attached to the columnar body or fastening the end of the spiral display body 1 with fastening parts as in the prior art Is no longer necessary. Therefore, it is possible to reduce the work process and greatly improve the mounting workability.

(2)
According to the spiral display body 1 of the present embodiment, the fiber layer 5 is fixed to the inner surface of the base material 2 and the base material 2 is reinforced by the fiber layer 5. Even if the member is formed, it is possible to reduce the possibility that the base material 2 will break when the base member is bent or stretched. Thereby, even if it spreads at the time of attachment work, it is possible to reduce significantly the possibility that the base material 2 will crack.

(3)
In addition, since the fiber layer 5 is fixed to the inner surface of the base material 2, the fiber layer 5 is attached to the base material 2 and the attachment target (the column 32 of the guard rail 30, etc.) when the spiral display body 1 is attached to the attachment target. By interposing between them, the friction between them can be increased, and the displacement of the spiral display body 1 can be prevented more reliably. Moreover, when the base material 2 is cooled and solidified after the fiber layer 5 is fixed to the inner surface of the base material 2 while the resin base material 2 is formed in a spiral shape in a molten state, the base material is formed by the fiber layer 5. Since wrinkles are prevented from occurring on the inner surface of 2, the uneven distribution of the material of the base material 2 is prevented, and as a result, the durability of the spiral display body 1 is improved.

(4)
According to the spiral display 1 of the present embodiment, when the base material 2 is formed in a spiral state in a molten state, the reflective material 3 can be fused to the base material 2 by the fusible resin layer 4 at the same time. Is possible. Thereby, the manufacturing process can be reduced.

(5)
According to the spiral display 1 of the present embodiment, the width W2 of the reflective material 3 is in the range of 0.1 to 0.8 times the width W1 of the base material 2, and the reflective material 3 is the same as that of the base material 2. Since the reflecting material 3 and the base material 2 are continuously fixed to the outer surface and have different colors (for example, the base material 2 is black and the reflecting material 3 is yellow), the different colors of the reflecting material 3 and the base Since the material 2 can be visually recognized at the same time, and a difference in color tone or brightness can be formed between the base material 2 and the reflective material 3, the visibility of the spiral display body 1 can be improved. It becomes possible to improve.

(6)
According to the spiral display body 1 of the present embodiment, since the base material 2 is a dark color (for example, black), when the spiral display body 1 is attached to a bright color attachment object such as white, the attachment object Since the difference in brightness between the color and the base material 2 becomes significant, the visibility is further improved.

(7)
According to the spiral display body 1 of the present embodiment, the spiral display body 1 attaches the spiral display body 1 to the column 32 of the guardrail 30 installed on the shoulder 41 of the road 40 as an attachment target, so that the road 40 It is possible to guide the line of sight of the driver of the passing car in the direction in which the road 40 extends. In particular, the spiral display body 1 is omnidirectional, and the spiral display body 1 can be visually recognized from any direction around the support pillar 32 of the guardrail 30. Compared with the conventionally known line-of-sight guidance display, it is possible to greatly improve the visibility.

(8)
According to the spiral display body 1 of the present embodiment, the base material 2 is fixed to the column 32 of the guard rail 30 by the anti-theft screw 10, so that the spiral display body 1 can be prevented from being stolen. .

  In addition to the anti-theft screw 10, other fixing members such as rivets and bolts can be used as a fixing member for fixing the base material 2 to the support column 32 of the guard rail 30.

(9)
According to the spiral display body 1 and the method of manufacturing the same of the present embodiment, the base material 2 is formed in a spiral shape in a molten state, and the reflective material 3 is fused to the outer surface of the base material 2, and then the base material 2. Since the spiral display body 1 having a high bending elastic modulus and high rigidity and having a high shape retention property can be continuously manufactured by solidifying in a state in which the shape of the spiral is held, the spiral display The body 1 can be mass-produced in a short time with a small number of manufacturing processes.

(10)
According to the method for manufacturing the spiral display body 1 of the present embodiment, the base material 2 is cooled after the fiber layer 5 is attached to the inner surface of the base material 2 while forming the base material 2 in a spiral shape in a molten state. Since the fiber layer 5 prevents wrinkles from being generated on the inner surface of the base material 2 when solidified, uneven distribution of the material of the base material 2 is prevented, and as a result, the durability of the spiral display body 1 is improved. .

(Modification)
(A)
In the above-described embodiment, as an example in which the spiral display body 1 is attached to a columnar body installed on the shoulder of the road, an example in which the spiral display body 1 is wound around and fixed to the support column 32 of the guard rail 30 is shown. The present invention is not limited to this, and the spiral display body 1 of the present invention may be wound around and fixed to other columnar bodies, for example, road signs or traffic lights. Alternatively, the spiral display body 1 of the present invention may be wound around and fixed to a beam (beam material) of the guardrail. Also in these cases, it is possible to guide the driver's line of sight on the road by the spiral display 1.

(B)
Furthermore, as other long attachment objects to which the spiral display body of the present invention is attached, for example, hoses and cords in a factory may be attached. In that case, what is necessary is just to wind and use the spiral display body around the aggregate | assembly which bundled several hoses. Also in this case, the visibility is improved by the spiral display body, and the operator can be alerted. Therefore, it is possible to reduce problems such as tripping on these hoses.

(C)
Moreover, in the said embodiment, although the base material 2 is dark colors, such as black or brown, this invention is not limited to this, Other colors may be sufficient. For example, when the attachment target to which the spiral display body 1 is attached is a dark brown guard rail, the base material 2 of the spiral display body 1 may be a light color such as white.

(D)
In the said embodiment, although the fiber layer 5 is being fixed to the inner surface of the helical base material 2, this invention is not limited to this, You may form in another site | part. For example, the fiber layer 5 may be formed as an intermediate layer of the base material 2. In that case, since the fiber layer 5 is protected from the outside by the base material 2, the cover layer 6 for protecting the fiber layer 5 becomes unnecessary.

(E)
In the above embodiment, the spiral display body 1 including the fiber layer 5 and the cover layer 6 has been described as an example. However, the present invention is not limited to this, and the fiber layer 5 and / or the cover layer are not limited thereto. 6 may be omitted, and even in that case, it is possible to prevent the spiral display body 1 from being displaced from the outer peripheral surface of the attachment target as described above.

DESCRIPTION OF SYMBOLS 1 Spiral display body 2 Base material 3 Reflective material 4 Fusible resin layer 5 Fiber layer 10 Antitheft screw (fixing member)
21 Straight pipe 22 Curved pipe 30 Guard rail 32 Post

Claims (12)

A spiral display attached to a long attachment object,
A base material made of a resin having a flexural modulus of 800 MPa or more and having a spiral shape;
A reflective material that is fixed to the outer surface of the base material and reflects light;
The inner diameter of the base material is set to be smaller than the outer diameter of the attachment target,
A spiral display body characterized by that. The flexural modulus is 2200 MPa or less,
The spiral display body according to claim 1. A fiber layer that reinforces the base material;
The spiral display body according to claim 1 or 2. The spiral display body according to claim 3, wherein the fiber layer is fixed to an inner surface of the base material. It further comprises a fusible resin layer that fuses the reflective material to the base material.
The spiral display body according to any one of claims 1 to 4. The width of the reflective material is in the range of 0.1 to 0.8 times the width of the base material,
The reflective material is continuously fixed to the outer surface of the base material,
The reflective material and the base material have different colors;
The spiral display body according to any one of claims 1 to 5. The spiral display body according to claim 6, wherein the base material has a dark color. The mounting object is a columnar body installed on the shoulder of a road.
The spiral display body according to any one of claims 1 to 7.   The spiral display body according to claim 8, further comprising a fixing member that fixes the base material to the columnar body. The base body is formed in a spiral shape in a molten state and the reflector is fused to the outer surface of the base body, and then the base body is solidified in a state of being held in a spiral shape,
The spiral display body according to any one of claims 1 to 9. It is a manufacturing method of the spiral display object according to claim 1 to 10,
Forming the base body into a spiral state in a molten state, and forming the reflector on the outer surface of the base body;
And a shape holding step of solidifying the base body and holding the shape in a spiral shape. In the molding step, a fiber layer is attached to the inner surface of the base body when the base body is spirally molded in a molten state.
The manufacturing method of the helical display body of Claim 11.

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