JP2021017708A - Sign member and sign member construction method - Google Patents
Sign member and sign member construction method Download PDFInfo
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- JP2021017708A JP2021017708A JP2019132830A JP2019132830A JP2021017708A JP 2021017708 A JP2021017708 A JP 2021017708A JP 2019132830 A JP2019132830 A JP 2019132830A JP 2019132830 A JP2019132830 A JP 2019132830A JP 2021017708 A JP2021017708 A JP 2021017708A
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- 238000010276 construction Methods 0.000 title abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 106
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 46
- 239000011324 bead Substances 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 12
- 239000002356 single layer Substances 0.000 claims description 4
- 239000002585 base Substances 0.000 description 33
- 239000012790 adhesive layer Substances 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- UKDIAJWKFXFVFG-UHFFFAOYSA-N potassium;oxido(dioxo)niobium Chemical compound [K+].[O-][Nb](=O)=O UKDIAJWKFXFVFG-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
本発明は、標示材および標示材の施工方法に関する。 The present invention relates to a marking material and a method of constructing the marking material.
従来、道路の中央分離線等の標示を設けるために、路面に貼付して使用される標示材が考えられており、例えば特許文献１では、再帰反射シート材料が接着剤層を介して路面に貼付されることが開示されている。 Conventionally, a marking material used by being attached to a road surface in order to provide a marking such as a central separation line of a road has been considered. For example, in Patent Document 1, a retroreflective sheet material is applied to a road surface via an adhesive layer. It is disclosed that it will be attached.
上記従来技術のように接着剤層あるいは下地層を介して路面に貼付される標示材では、それらの層と標示材との界面が、ズレや剥がれを生じさせ易い箇所となり、耐久性低下の要因となりうるが、道路や駐車場等の路面に施される標示材は、例えば車両の走行や据え切り等によって、強く擦れるような力を頻繁に受けることが想定され、高い耐久性を有することが好ましい。 In the marking material attached to the road surface via the adhesive layer or the base layer as in the above-mentioned conventional technique, the interface between these layers and the marking material becomes a place where slippage or peeling is likely to occur, which causes a decrease in durability. However, the marking material applied to the road surface such as a road or a parking lot is expected to be frequently subjected to a strong rubbing force due to, for example, running or stationary steering of a vehicle, and has high durability. preferable.
そこで、本発明は、より耐久性に優れた標示材および標示材の施工方法を提供することを目的とする。 Therefore, an object of the present invention is to provide a marking material having more excellent durability and a method of constructing the marking material.
上記目的を達成するための本発明の標示材は、樹脂によって形成され色の付された基材層を有し、当該基材層に、高周波によって発熱する発熱粒子、および、前記基材層の少なくとも一方の面の側に光を反射する反射材を含む。 The marking material of the present invention for achieving the above object has a base material layer formed of a resin and colored, and the base material layer contains heat-generating particles that generate heat due to high frequency, and the base material layer. Includes a reflective material that reflects light on at least one side.
上記目的を達成するための本発明の標示材の施工方法は、前記標示材を、路面または床面に配置し、前記標示材に高周波を照射し、前記路面または床面に前記標示材を貼付する。 In the method of constructing the marking material of the present invention for achieving the above object, the marking material is arranged on a road surface or a floor surface, the marking material is irradiated with high frequency waves, and the marking material is attached to the road surface or the floor surface. To do.
上記構成を有する発明では、接着剤層や下地層を介さず基材層の直接的な固着によって、ズレや剥がれが効果的に抑制されるため、優れた耐久性が発揮される。また、その固着する基材層自体に、色が付されているとともに反射材が含まれているため、これらの機能を備える層を別途に設ける必要がなく、構成を簡単にできる。 In the invention having the above structure, the direct adhesion of the base material layer without going through the adhesive layer or the base layer effectively suppresses the displacement and peeling, so that excellent durability is exhibited. Further, since the base material layer to be fixed is colored and contains a reflective material, it is not necessary to separately provide a layer having these functions, and the configuration can be simplified.
以下、添付した図面を参照しながら、本発明の実施形態を説明する。なお、図面の寸法比率は、説明の都合上誇張されており、実際の比率とは異なる。 Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. The dimensional ratios in the drawings are exaggerated for convenience of explanation and differ from the actual ratios.
図１に示すように、実施形態の標示材１００は、基材層１１０を有し、基材層１１０に、発熱粒子１２０、およびガラスビーズ１３０（反射材）を含む。標示材１００は、基材層１１０からなる単層構造を有する。 As shown in FIG. 1, the marking material 100 of the embodiment has a base material layer 110, and the base material layer 110 includes heat generating particles 120 and glass beads 130 (reflecting material). The marking material 100 has a single-layer structure composed of a base material layer 110.
標示材１００は、例えば、道路、駐車場、飛行場等の路面標示に使用される。路面標示としては、例えば、道路に設けられる中央分離線、横断歩道線、制限速度標示、もしくは路肩ライン等の道路標識、駐車場等の駐車区画線、または飛行場等の停止線等が挙げられるが、これらに限定されない。 The marking material 100 is used for road markings such as roads, parking lots, and airfields. Examples of road markings include road markings such as central separation lines, pedestrian crossing lines, speed limit markings or road shoulder lines provided on roads, parking lot lines such as parking lots, and stop lines such as airfields. , Not limited to these.
基材層１１０は、樹脂によって形成されており、また、基材層１１０には色が付けられている。基材層１１０を形成する樹脂は、例えば、ポリプロピレン（ＰＰ）やポリエチレン（ＰＥ）等のポリオレフィン、ポリカーボネート（ＰＣ）、アクリロニトリル−ブタジエン−スチレン共重合体（ＡＢＳ）等であるが、これらに限定されない。また、基材層１１０の厚みは、例えば、１００μｍ以上４００μｍ以下であるが、これに限定されない。 The base material layer 110 is made of resin, and the base material layer 110 is colored. The resin forming the base material layer 110 is, for example, polyolefin such as polypropylene (PP) or polyethylene (PE), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), and the like, but is not limited thereto. .. Further, the thickness of the base material layer 110 is, for example, 100 μm or more and 400 μm or less, but is not limited thereto.
基材層１１０の色は、標示材１００がどのような路面標示に使用されるかに応じて適宜設定でき、例えば白または黄色であるが、これらに限定されない。基材層１１０には、例えば、酸化チタン、耐熱黄色鉛等の着色用顔料を含ませることによって、所定の色を付けることができる。 The color of the base material layer 110 can be appropriately set depending on what kind of road marking the marking material 100 is used for, and is, for example, white or yellow, but is not limited thereto. The base material layer 110 can be given a predetermined color by containing, for example, a coloring pigment such as titanium oxide or heat-resistant yellow lead.
ガラスビーズ１３０は、基材層１１０に複数含まれており、それぞれが光を再帰反射する。本実施形態では、複数のガラスビーズ１３０は、不規則に分散した状態で基材層１１０に含まれているが、これに限定されず、ガラスビーズ１３０が規則的に配列されている形態も本発明の範囲に含まれる。また、本実施形態では、基材層１１０の両面で光の反射が生じるが、この形態に限定されず、基材層１１０の一方の面だけで光の反射が生じる形態も本発明の範囲に含まれる。 A plurality of glass beads 130 are contained in the base material layer 110, and each of them retroreflects light. In the present embodiment, the plurality of glass beads 130 are included in the base material layer 110 in an irregularly dispersed state, but the present invention is not limited to this, and a form in which the glass beads 130 are regularly arranged is also present. It is included in the scope of the invention. Further, in the present embodiment, light is reflected on both surfaces of the base material layer 110, but the present invention is not limited to this mode, and a mode in which light is reflected on only one surface of the base material layer 110 is also within the scope of the present invention. included.
いくつかのガラスビーズ１３０は、基材層１１０の面で部分的に露出しており、光を再帰反射するが、ガラスビーズ１３０が基材層１１０の内部に埋設されていたとしても、例えば光透過性を有する着色剤によって基材層１１０に色が付けられていれば、基材層１１０の内部からも光の反射を生じさせることができる。 Some glass beads 130 are partially exposed on the surface of the substrate layer 110 and retroreflect light, even if the glass beads 130 are embedded inside the substrate layer 110, for example light. If the base material layer 110 is colored by a transparent colorant, light can be reflected from the inside of the base material layer 110 as well.
発熱粒子１２０は、高周波を受けて発熱する性質を有する。このような性質を有すれば、発熱粒子１２０の形成材料は、特に限定されず、例えば、酸化亜鉛、炭化ケイ素、酸化チタン、チタン酸バリウム、チタン酸ジルコン酸バリウム、チタン酸鉛、ニオブ酸カリウム、水和ケイ酸アルミニウム、アルカリ金属またはアルカリ土類金属の水和アルミノケイ酸塩等の結晶水を有する無機物質等の一種単独または二種以上の組み合わせであり、発熱性の観点から、好ましくは、酸化亜鉛、炭化ケイ素である。 The heat generating particles 120 have a property of receiving high frequency and generating heat. As long as it has such properties, the material for forming the heat generating particles 120 is not particularly limited, and for example, zinc oxide, silicon carbide, titanium oxide, barium titanate, barium titanate, lead titanate, potassium niobate. , Hydrated aluminum silicate, alkali metal or alkaline earth metal hydrated aluminosilicate and other inorganic substances having crystalline water, etc., alone or in combination of two or more, preferably from the viewpoint of heat generation. Zinc oxide and silicon carbide.
次に、標示材１００の施工方法を述べる。 Next, the construction method of the marking material 100 will be described.
図２に示すように、実施形態の施工方法では、まず、標示材１００が、路面１０の所定の箇所に配置される。路面１０は、例えば、道路、駐車場、飛行場等のアスファルトであるが、これに限定されず、コンクリート等であってもよい。標示材１００は、路面１０への配置後、その場に固着される。 As shown in FIG. 2, in the construction method of the embodiment, first, the marking material 100 is arranged at a predetermined position on the road surface 10. The road surface 10 is, for example, asphalt such as a road, a parking lot, or an airfield, but is not limited to this, and may be concrete or the like. The marking material 100 is fixed to the place after being arranged on the road surface 10.
具体的に、図３に示すように、標示材１００に高周波１Ｃが照射され、発熱粒子１２０の発熱を利用して、基材層１１０が路面１０に固着される。こうして、標示材１００は、路面１０に貼付される。 Specifically, as shown in FIG. 3, the marking material 100 is irradiated with high frequency 1C, and the base material layer 110 is fixed to the road surface 10 by utilizing the heat generated by the heat generating particles 120. In this way, the marking material 100 is attached to the road surface 10.
高周波１Ｃは、標示材１００に向けて配置された電極１Ａ、１Ｂの間に生じる。電極１Ａ、１Ｂは、標示材１００の面に対向して、互いに離間して配置される。電極１Ａ、１Ｂは、それらに高周波の電圧を印加する高周波発生装置（不図示）と電気的に接続している。 The high frequency 1C is generated between the electrodes 1A and 1B arranged toward the marking material 100. The electrodes 1A and 1B are arranged so as to face the surface of the marking material 100 and to be separated from each other. The electrodes 1A and 1B are electrically connected to a high frequency generator (not shown) that applies a high frequency voltage to them.
高周波１Ｃは交番電界であり、発熱粒子１２０は、高周波１Ｃが照射されると誘電加熱によって発熱し、また、高周波１Ｃの停止とともに発熱が止む。発熱粒子１２０が発熱すると、その熱によって、基材層１１０は軟化して路面１０になじみ、発熱粒子１２０の発熱が止むと、基材層１１０は硬化しつつ路面１０に固着する。高周波１Ｃの周波数は、例えば１〜１００ＭＨｚであるが、これに限定されない。 The high frequency 1C is an alternating electric field, and the heat generating particles 120 generate heat by dielectric heating when the high frequency 1C is irradiated, and the heat generation stops when the high frequency 1C stops. When the heat-generating particles 120 generate heat, the base material layer 110 softens and becomes familiar with the road surface 10 due to the heat, and when the heat generation of the heat-generating particles 120 stops, the base material layer 110 hardens and adheres to the road surface 10. The frequency of the high frequency 1C is, for example, 1 to 100 MHz, but is not limited thereto.
路面１０がアスファルトの場合、発熱粒子１２０が発する熱は、基材層１１０を軟化させるだけでなく、路面１０の表層のアスファルトを溶融させることも可能であり、このように基材層１１０と路面１０とを互いに溶融固着させることによって、両者の固着強度をより高めることができる。 When the road surface 10 is asphalt, the heat generated by the heat generating particles 120 can not only soften the base material layer 110 but also melt the asphalt on the surface layer of the road surface 10, and thus the base material layer 110 and the road surface can be melted. By melting and fixing the 10 to each other, the fixing strength of both can be further increased.
高周波１Ｃを照射する時間は、特に限定されないが、例えば数秒である。従って、路面１０への基材層１１０の固着は、短時間で済ませられる。高周波１Ｃの照射終了後、電極１Ａ、１Ｂは、標示材１００から離される。 The time for irradiating the high frequency 1C is not particularly limited, but is, for example, several seconds. Therefore, the base material layer 110 can be fixed to the road surface 10 in a short time. After the irradiation of the high frequency 1C is completed, the electrodes 1A and 1B are separated from the marking material 100.
標示材１００が、比較的小さい、あるいは短い場合には、以上のような施工作業を一度行うことによって、標示材１００の全体を路面１０に貼付できるが、標示材１００が比較的大きい、あるいは長い場合、作業者は、高周波１Ｃの照射箇所をずらしつつ、標示材１００を路面１０に部分的に貼付することを繰り返して、標示材１００の全体を路面１０に貼付していく。 When the marking material 100 is relatively small or short, the entire marking material 100 can be attached to the road surface 10 by performing the above-mentioned construction work once, but the marking material 100 is relatively large or long. In this case, the operator repeatedly affixes the marking material 100 partially to the road surface 10 while shifting the irradiation location of the high frequency 1C, and affixes the entire marking material 100 to the road surface 10.
次に、本実施形態の作用効果を述べる。 Next, the action and effect of this embodiment will be described.
本実施形態では、基材層１１０が接着剤層や下地層を介さず路面１０と直接固着し、これによって、ズレや剥がれが効果的に抑制されるため、標示材１００が路面１０で優れた耐久性を発揮する。また、その固着する基材層１１０自体に、色が付されているとともに反射材１３０が含まれているため、これらの機能を備える層を別途に設ける必要がなく、構成を簡単にできる。 In the present embodiment, the base material layer 110 is directly adhered to the road surface 10 without passing through the adhesive layer or the base layer, and thereby the displacement and peeling are effectively suppressed. Therefore, the marking material 100 is excellent on the road surface 10. Demonstrate durability. Further, since the base material layer 110 itself to be fixed is colored and contains the reflective material 130, it is not necessary to separately provide a layer having these functions, and the configuration can be simplified.
上述のように本実施形態では、接着剤層や下地層との間の界面が形成されず、ズレや剥がれが効果的に抑制されるが、標示材１００が基材層１１０からなる単層構造を有しており、標示材１００自身においても、層同士の間の界面がない。このため、標示材１００が、路面１０において、より優れた耐久性を発揮し易い。 As described above, in the present embodiment, the interface between the adhesive layer and the base layer is not formed, and the displacement and peeling are effectively suppressed, but the marking material 100 has a single-layer structure composed of the base material layer 110. In the marking material 100 itself, there is no interface between the layers. Therefore, the marking material 100 tends to exhibit more excellent durability on the road surface 10.
標示材１００は、ガラスビーズ１３０が光を再帰反射するため、雨天の際や夜間等、視界が悪い状況であっても、ヘッドライトやサーチライト等の光によって視認し易い。 Since the glass beads 130 retroreflect light in the marking material 100, the marking material 100 can be easily visually recognized by light such as a headlight or a searchlight even in a poor visibility situation such as in rainy weather or at night.
ガラスビーズ１３０は、様々な方向から照射される光に対応して再帰反射するため、広範な照射角度にわたって、標示材１００の視認性を高められる。 Since the glass beads 130 retroreflect in response to light emitted from various directions, the visibility of the marking material 100 can be enhanced over a wide range of irradiation angles.
本発明は、上述した実施形態に限定されるものではなく、特許請求の範囲内で種々改変できる。 The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.
例えば、図４に示すように、反射材としてマイクロプリズム２３０を含む標示材２００も本発明の範囲に含まれる。マイクロプリズム２３０も、ガラスビーズ１３０と同様、光を再帰反射する。 For example, as shown in FIG. 4, a marking material 200 including a microprism 230 as a reflective material is also included in the scope of the present invention. Like the glass beads 130, the microprism 230 also retroreflects light.
ガラスビーズ１３０の方が、マイクロプリズム２３０よりも、広範な照射角度に対応して再帰反射を生じさせ易いが、マイクロプリズム２３０は、光を平面で反射するため、特定の方向から照射される光に対しては、高い反射率を有し、視認され易い。 The glass beads 130 are more likely to generate retroreflection corresponding to a wider irradiation angle than the microprism 230, but the microprism 230 reflects light in a plane, so that the light is emitted from a specific direction. It has a high reflectance and is easily visible.
標示材の形状は、道路に設けられる中央分離線や横断歩道線のような線状に限定されず、例えば、文字、数字、または図柄等を表す他の形状であってもよい。 The shape of the marking material is not limited to a linear shape such as a central separation line or a pedestrian crossing line provided on a road, and may be another shape representing, for example, letters, numbers, or patterns.
また、上記実施形態では、標示材が単層構造を有するが、この形態に限定されず、基材層に例えば光透過性を有する他の層が積層された標示材も本発明の範囲に含まれる。 Further, in the above embodiment, the marking material has a single-layer structure, but the present invention is not limited to this embodiment, and the scope of the present invention also includes a marking material in which another layer having, for example, light transmission is laminated on the base material layer. Is done.
また、標示材が貼付される貼付対象は、道路や駐車場等の路面に限定されず、例えば駅のプラットホームや商業施設等における床面であってもよい。 Further, the object to which the marking material is attached is not limited to the road surface such as a road or a parking lot, and may be, for example, a floor surface on a platform of a station or a commercial facility.
１０ 路面、
１００、２００ 標示材、
１１０ 基材層、
１２０ 発熱粒子、
１３０ ガラスビーズ（反射材）、
２３０ マイクロプリズム（反射材）、
１Ａ、１Ｂ 電極、
１Ｃ 高周波。
10 road surface,
100, 200 marking material,
110 substrate layer,
120 heating particles,
130 glass beads (reflecting material),
230 micro prism (reflecting material),
1A, 1B electrodes,
1C high frequency.
Claims (6)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03262810A (en) * | 1990-03-14 | 1991-11-22 | Hitachi Chem Co Ltd | Road marking line |
| JPH04166502A (en) * | 1990-10-31 | 1992-06-12 | Konpetsukusu:Kk | Construction of road marking traffic sign |
| JPH0598613A (en) * | 1991-10-07 | 1993-04-20 | Konpetsukusu:Kk | Constructing method for marking of road |
| JP2004190462A (en) * | 2002-12-10 | 2004-07-08 | Ssc:Kk | Temporary braille sheet for guiding visually handicapped person |
| JP3199741U (en) * | 2015-05-26 | 2015-09-10 | 株式会社ヨシオ | Folding luminous arrow guidance display |
| JP2016525227A (en) * | 2013-07-01 | 2016-08-22 | スリーエム イノベイティブ プロパティズ カンパニー | Retroreflective sheet material including solvent-based topcoat |
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2019
- 2019-07-18 JP JP2019132830A patent/JP2021017708A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03262810A (en) * | 1990-03-14 | 1991-11-22 | Hitachi Chem Co Ltd | Road marking line |
| JPH04166502A (en) * | 1990-10-31 | 1992-06-12 | Konpetsukusu:Kk | Construction of road marking traffic sign |
| JPH0598613A (en) * | 1991-10-07 | 1993-04-20 | Konpetsukusu:Kk | Constructing method for marking of road |
| JP2004190462A (en) * | 2002-12-10 | 2004-07-08 | Ssc:Kk | Temporary braille sheet for guiding visually handicapped person |
| JP2016525227A (en) * | 2013-07-01 | 2016-08-22 | スリーエム イノベイティブ プロパティズ カンパニー | Retroreflective sheet material including solvent-based topcoat |
| JP3199741U (en) * | 2015-05-26 | 2015-09-10 | 株式会社ヨシオ | Folding luminous arrow guidance display |
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