JP2008069544A - Road sign pole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elastically deformable road sign pole with high strength, on which a portion subjected to the coming-off of a surface coating is inconspicuous even if the surface coating of an external cylinder member comes off. <P>SOLUTION: This road sign pole 10 comprises the external cylinder member 12 composed of a thermoplastic elastomer, and a polyurethane foam 13 which is infilled into the external cylinder member 12. Characteristically, a coating layer 18, in which a base coat layer and a spotted coating forming a grained pattern are laminated together, is formed on at least a part of the surface of the external cylinder member 12; the grained pattern is composed of a colored portion including a deep-colored portion 19 and a light-colored portion 20; and the color of at least a part of the colored portion is identical to that of the thermoplastic elastomer. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a road sign pillar that is elastically deformable, has high strength, and does not stand out even when the surface coating of the outer cylinder member is peeled off, and is particularly suitable for installation on a sidewalk. It relates to signposts.

  The road sign pillar is used for marking the center separation line of the upper and lower roads, the boundary line between the roadway and the sidewalk, and markings such as park stop partitions such as parks and streets. Therefore, if the road sign pillar is formed of a material having a large rigidity, there is a risk that the road sign pillar may be damaged by the impact or fragments may be scattered when the vehicle collides. In addition, there is a risk that the driver may be harmed on the vehicle side, and when a person hits a road sign pillar, there is a possibility of causing harm to the person.

  An elastomer road sign post configured to solve such a problem and bend greatly by a collision is disclosed (Patent Document 1).

  However, even with the road sign pillar disclosed in Patent Document 1, if the surface coating of the sign pillar is peeled off and the inside is exposed due to the vehicle or bicycle coming into contact with the sign pillar, the aesthetics may be significantly impaired. There is.

  In addition, thermoplastic elastomers such as thermoplastic polyurethane elastomers used as road sign pillars are essentially colorless and transparent to light yellow resins, and are usually used in green or orange colors in consideration of visibility. Yes. However, although green and orange are conspicuous colors, when installed on a park road, the surrounding scenery is uncomfortable.

  Therefore, as a method that does not give a sense of incongruity in a landscape that emphasizes nature, a method of making a road sign pillar with a natural stone tone (grain pattern) appearance can be considered. The road sign pillar having such a natural stone-like appearance is a metallic color tone including white or aluminum flakes on the surface of the road sign pillar formed by using the above-mentioned green, orange or uncolored thermoplastic elastomer. It can be formed by applying a (metallic tone) base coat layer and spraying a dark paint on it to form spots.

No. 6-45450

  Therefore, in view of the problems of the above-mentioned known technology, the present invention is elastically deformable, has high strength, and even when the surface coating of the outer cylinder member is peeled off, the peeled portion is not conspicuous, and the natural stone appearance The object is to provide a road sign pillar having

The present invention is an outer cylinder member made of a thermoplastic elastomer and a road sign pillar made of a polyurethane foam filled in the outer cylinder member.
A coating layer is formed in which a base coat layer and a speckled paint that forms a grain pattern are laminated on at least a part of the surface of the outer cylinder member,
The stone pattern is composed of a colored part including a dark part and a light part,
The present invention relates to a road sign post characterized in that at least a part of the colored portion is substantially the same color as the thermoplastic elastomer.

Such a road sign post is made of thermoplastic elastomer, so it has high strength, and even when the sign post collides with a vehicle and greatly deforms, it has a high function of recovering its shape, and it is strong and less likely to break. Has performance. Further, since the whole is flexible, safety is high when a person or a bicycle collides, and damage to the vehicle is reduced when the vehicle collides.

  In addition, since the surface of the outer cylindrical member of the present invention is formed with a coating layer in which spotted paint forming a stone pattern is laminated, the appearance of the road sign pillar is a beautiful finish, and a three-dimensional It is possible to express a feeling, and it is possible to express a natural stone-like surface form very similar to natural stone.

  Further, since the road marking pillar is such that at least a part of the colored portion of the coating layer is substantially the same color as the thermoplastic elastomer, even when the surface coating is peeled off when contacting a vehicle or a bicycle, etc. The peeled portion is inconspicuous and effective.

  In addition, the said substantially same color means the color of the same color or the same grade.

  The color tone of the base coat layer in the road sign pillar of the present invention is preferably a metallic color tone (metallic tone). Since the base coat layer has a metallic color tone, it reflects the light of the vehicle headlight and the light of the bicycle, and becomes a road sign column with excellent visibility even at night, which is effective in preventing collisions.

  As the thermoplastic elastomer constituting the outer cylinder member of the road sign pillar of the present invention, a known thermoplastic elastomer can be used without any particular limitation. Specifically, polyester, polyurethane (TPU), polyolefin (TPO), polystyrene (TPS), polyamide (TPAE), ionomer, diene, polyvinyl chloride (TPVC), polyvinyl chloride / polyurethane Examples thereof include a polymer alloy type, a mixture of a thermoplastic resin and rubber, and the like. A thermoplastic elastomer in which rubber is mixed or finely dispersed in these thermoplastic elastomers can also be used. These thermoplastic elastomers can be used alone, and if necessary, two or more kinds may be mixed and used. Among these thermoplastic elastomers, the use of a polyurethane-based thermoplastic elastomer is particularly preferable because of its excellent durability.

  The thermoplastic elastomer preferably has a hardness of 95 or less, more preferably 85 or less, according to JIS-A hardness (ASKER-A hardness meter). If the hardness is too high, damage may occur due to repeated bending. The hardness of the thermoplastic elastomer is usually 50 or more in terms of JIS-A hardness.

  The outer cylinder member constituting the road sign pillar of the present invention is filled with polyurethane foam. The upper part of the outer cylinder member is preferably a polyurethane foam chip, and the lower part where the inner support column and the coil spring as the fixing members are located is preferably a soft or semi-rigid polyurethane foam. As the polyurethane foam chip, a soft polyurethane foam or a semi-rigid polyurethane foam formed into a chip using a known chipping device such as a chipper is used. Since the chip can use waste polyurethane foam, it is inexpensive and economical, and is also effective for recycling. The polyurethane foam chip may be filled as it is pushed into the outer cylinder member as it is, or a binder may be used and the polyurethane foam chip may be filled by attaching the binder to the polyurethane foam.

  In the present invention, an adhesion primer can be used. By using the adhesion primer, the adhesion between the outer cylinder member and the coating layer can be improved. As an adhesion primer, a polyurethane resin excellent in flexibility and adhesion is used. In addition, it is a preferable aspect to degrease before using the adhesion primer. The primer for adhesion can be uniformly applied by degreasing. As a constituent material of the primer layer for adhesion, it is also preferable to use a commercially available product, and it is also possible to use a two-component undercoat using a polyisocyanate curing agent such as Duranate N (Asahi Kasei) or Coronate L (Nippon Polyurethane). Is preferred. The thickness of the polyurethane resin layer which is an adhesion primer layer is preferably 10 to 50 μm.

  A known non-yellowing resin binder can be used without limitation as a base coat layer (resin binder) constituting the coating layer. Specifically, acrylic resin, non-yellowing polyurethane resin, acrylic urethane resin and the like are exemplified. Among these, it is preferable to use a non-yellowing polyurethane resin or an acrylic urethane resin which is excellent in adhesiveness and flexibility with an adhesion primer or the like and does not generate a crack even if it is stepped on by a vehicle. Moreover, it is also preferable to use a commercial item, for example, a resin binder made by Mikuni Paint Co., Ltd. can be used.

  A well-known thing can be used without limitation as a spot-like coating material which comprises a coating-film layer, It is also a preferable aspect to use a commercial item. For example, paints manufactured by Mikuni Paint Co., Ltd. can be used.

It is preferable to carry out by laminating the spotted paint constituting the coating layer by a low pressure coating method. According to this configuration, speckled paint particles can be easily applied to the surface of the molded substrate, the coating layer can be thick and beautiful, and the coating machine used in the low-pressure coating method is relatively inexpensive, so the coating cost Can be lowered. In this case, the low pressure coating method means a coating method in which the coating pressure is set to 0.5 kg / cm ² or less.

Examples of the dark colored portion of the stone pattern include black, brown, and dark brown, and one color or two or more colors may be used. Moreover, as a light color part, white, yellow, ocher, gray, etc. are mentioned, for example, 1 color or 2 colors or more may be sufficient.

  It is also suitable to mix other additives such as pigments, UV degradation inhibitors for improving weather resistance, antioxidants and the like, if necessary, in the coating layer. In particular, since the road sign pillar of the present invention is considered to be used outdoors, it is a preferable aspect to use an ultraviolet deterioration preventing agent in order to prevent deterioration of the road sign pillar due to ultraviolet light.

  It is a preferred embodiment to laminate a top coat layer on a coating layer composed of a laminate of the base coat layer and the spotted paint. As the topcoat layer, a urethane-based or acrylic urethane-based matte paint containing an ultraviolet degradation inhibitor is particularly preferable. Because it contains an UV degradation inhibitor, it has excellent weather resistance and can significantly reduce UV degradation, and because it uses a matte paint of urethane or acrylic urethane for the topcoat layer, it is impact resistant. Also excellent. In general, the top coat layer may be either colorless or colored. In the present invention, at least a part of the surface of the outer cylinder member has a base coat layer and a grain pattern. Since a coating layer in which the spotted paint to be formed is laminated is formed, a colorless top coat layer is preferable. In addition, as a constituent material of the topcoat layer, it is also a preferable aspect to use a commercially available product. For example, a material obtained by blending a matte material and an ultraviolet deterioration preventing agent with a paint such as manufactured by Mikuni Paint Co., Ltd. can be used. .

  In addition, in order to fix the road sign pillar of this invention to a road surface, it is preferable to provide a fixing member.

  FIG. 1 is an external view, an internal configuration diagram, and a longitudinal side view illustrating an embodiment of the road sign pillar of the present invention.

  The road sign pillar 10 includes an outer cylinder member 12 having a substantially cylindrical shape with a convex shape at the top, an inner column 14 which is a fixing member disposed under the outer cylinder member 12, and an outer cylinder of the inner column 14. A coil spring 16 disposed at an inner side end of the member 12 and a polyurethane foam 13 filled in the cylindrical outer cylinder member 12 are formed. A part 14b of the inner column 14 is formed by an outer cylinder. It is exposed outward from the lower end of the member 12, and this portion is fixed in the ground. Anchor bolts 15 are preferably attached to a part 14b of the internal support 14 that is fixed in the ground by placing fresh concrete or the like in order to prevent rotation and disconnection. The coil spring 16 is fixed to the internal support 14 by a known method such as welding, fitting, press-fitting, or caulking. The polyurethane foam 13 uses a polyurethane foam chip 31 on the upper end side, and is filled with a soft or semi-rigid polyurethane foam 32 on the lower end side so as to cover the internal strut 14. The inner support column 14 and the outer cylinder member 12 are preferably set coaxially.

  According to the configuration in which the inner support column 14 and the coil spring 16 are covered on the lower end side and the soft or semi-rigid polyurethane foam 32 is filled, the foamed stock solution composition forming the semi-rigid polyurethane foam is expanded and cured together with the coil spring. In order to adhere to the internal struts 14 and the coil springs 16 while being filled in the gaps of the inner struts 14 and the coil springs 16, the required flexibility is obtained, and even if it is deformed due to a vehicle collision, it peels off and the strength decreases. There is nothing.

  A retroreflective sheet 11 is attached to a part of the outer periphery of the road sign post 10. It is preferable to form the retroreflective sheet 11 in a concave shape. In the road sign pillar illustrated in FIG. 1, the upper retroreflective sheet 11 is configured in one stage, and according to such a configuration, visibility is improved when light is irradiated at night.

  Further, the outer cylinder member 12 is a thermoplastic polyurethane elastomer 17, and after degreasing the elastomer, the urethane coating layer 18 which is a base coat layer coated on the thermoplastic polyurethane elastomer 17 is further spotted on the coating layer 18. It is composed of a urethane-based matte paint which is a top coat layer 21 containing a UV-like anti-aging agent sprayed thereon. Here, the method for forming the spotted paint uses a spray capable of spraying the paint as droplets, and sprays a dark color paint and a light color paint. Thereby, it spreads at the time of adhesion, and the dark color part 19 and the light color part 20 of a stone pattern are formed.

  The outer cylinder member 12 preferably has a thickness of 2 to 6 mm, a height of generally 500 to 2000 mm, and an outer diameter of generally 80 to 150 mm.

The external appearance which illustrated the embodiment of the road sign pillar of this invention, an internal block diagram, and a vertical side view

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Road sign pillar 11 Retroreflective sheet 12 Outer cylinder member 13 Polyurethane foam 14 Internal support | pillar 15 Anchor bolt 16 Coil spring 17 Thermoplastic polyurethane elastomer 18 Urethane coating layer
19 Dark Color (Paint)
20 Light color part (paint)
21 Topcoat layer
31 Polyurethane foam chip 32 Soft or semi-rigid polyurethane foam

Claims (2)

In a road sign pillar made of an outer cylinder member made of a thermoplastic elastomer and a polyurethane foam filled inside the outer cylinder member,
A coating layer is formed in which a base coat layer and a speckled paint that forms a grain pattern are laminated on at least a part of the surface of the outer cylinder member,
The stone pattern is composed of a colored part including a dark part and a light part,
At least a part of the colored portion is substantially the same color as the thermoplastic elastomer. The road sign pillar according to claim 1, wherein a color tone of the base coat layer is a metallic color tone.

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