JPH11173319A - Reflecting bolt - Google Patents

Reflecting bolt

Info

Publication number
JPH11173319A
JPH11173319A JP9354063A JP35406397A JPH11173319A JP H11173319 A JPH11173319 A JP H11173319A JP 9354063 A JP9354063 A JP 9354063A JP 35406397 A JP35406397 A JP 35406397A JP H11173319 A JPH11173319 A JP H11173319A
Authority
JP
Japan
Prior art keywords
bolt
night
reflecting sheet
present
head part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9354063A
Other languages
Japanese (ja)
Inventor
Daisuke Shiba
大輔 柴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JISUPA KK
Original Assignee
JISUPA KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JISUPA KK filed Critical JISUPA KK
Priority to JP9354063A priority Critical patent/JPH11173319A/en
Publication of JPH11173319A publication Critical patent/JPH11173319A/en
Pending legal-status Critical Current

Links

Landscapes

  • Road Signs Or Road Markings (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve visibility at night and in the dark by providing a reflecting sheet on the head part of a bolt. SOLUTION: A glass head type reflecting sheet 2 is provided, with heatedly pressed by a heater, etc., so as to be adaptable to a curved surface, on the domelike curved surface of the head part of a guard rail connecting and fixing bolt 1. The glass bead type reflecting sheet 2, difficult to be unoccurring in optical performance lowering due to shape destruction in sheet heating, is preferably used as the reflecting sheet 2. The whole guide rail can be made visual, as if the whole guide is recursively reflected, to a vehicle driver at the time of night travel, by visual effect where the bolt 1 can be connectedly seen in strabismus, through thus making the head part of the bolt 1, to be used for connecting and fixing a guard rail, a reflection type. Consequently a road condition in the front in a night can be made clearly visual, thereby great effect can be expected for preventing a traffic accident at night due to insufficient visibility.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、道路のガードレールの
接続固定に用いるボルト(1)の頭部に再帰反射材を設
けた反射ボルトに関するものであるが、ボルト(1)の
用途上、この分野に限定するものではなく、本発明を用
いての夜間および暗所での視認性向上を目的とする各種
の利用方法が考えられる。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection bolt provided with a retroreflective material on the head of a bolt (1) used for connecting and fixing a guardrail on a road. The present invention is not limited to the field, and various utilization methods for improving visibility at night and in a dark place using the present invention can be considered.

【0002】[0002]

【従来の技術】従来、ガードレールの接続固定に用いら
れているボルト(1)の殆どは頭部がドーム状であり、
しかも無反射タイプのものである。
2. Description of the Related Art Most bolts (1) conventionally used for connecting and fixing a guardrail have a dome-shaped head.
Moreover, it is a non-reflective type.

【0003】[0003]

【発明が解決しようとする課題】夜間走行時の道路上の
前方視界の視覚助長用の再帰反射材として、特にガード
レールにおいては、円形のコーナーキューブ式再帰反射
板を用いたゼネレーターが一定間隔で設けられている。
本来、ガードレール自体が再起帰射を行えれば、夜間の
前方の道路状況の視認性は格段に向上するのであるが、
仮に、ガードレールの表面に再帰反射塗装や反射シート
粘着処理を施したとしても、車輌のヘッドライト光が当
該再帰反射材に入射する角度が狭角なため、再帰反射材
の光学的特性上、効果的な再帰反射は望めないのと、製
造コスト的にも極めて高額になるため、実用化は極めて
難しいのが現状である。本発明は、ガードレール接続固
定用のボルト(1)の頭部を、生産段階において再帰反
射式とすることで、後施工することなく、ガードレール
そのものを再帰反射効果により鮮明にドライバーに視覚
させることを目的としている。
SUMMARY OF THE INVENTION As a retroreflective material for visual enhancement of a forward field of view on a road at night, a generator using a circular corner cube type retroreflective plate is provided at a fixed interval, particularly in a guardrail. Have been.
Originally, if the guardrail itself could be relaunched, the visibility of the road conditions ahead at night would be significantly improved,
Even if the surface of the guardrail is subjected to a retroreflective coating or a reflective sheet adhesive treatment, the angle at which the headlight of the vehicle is incident on the retroreflective material is narrow. At present, practical retroreflection cannot be expected, and the production cost is extremely high. According to the present invention, the head of the bolt (1) for connecting and fixing the guardrail is made to be a retroreflective type at the production stage, so that the guardrail itself can be clearly seen by the driver by the retroreflective effect without post-processing. The purpose is.

【0004】[0004]

【課題を解決するための手段】上記目的を達成するため
に、請求項1に記載の本発明においては、従来のドーム
状のボルト(1)の頭部に、ガラスビーズ式の反射シー
ト(2)を加熱圧着して設ける。
In order to achieve the above object, according to the present invention, the head of a conventional dome-shaped bolt (1) is provided with a glass bead type reflection sheet (2). ) Is provided by thermocompression bonding.

【0005】また、請求項2に記載の本発明において
は、当該ボルト(1)の頭部上面を円柱面形状、すなわ
ち、かまぼこ状の形状とし、コーナーキューブ式あるい
はガラスビーズ式の反射シート(2)を粘着して設け
る。
In the present invention, the upper surface of the head of the bolt (1) has a cylindrical shape, that is, a semi-cylindrical shape, and a corner cube type or glass bead type reflection sheet (2). ) Is provided by adhesion.

【0006】[0006]

【作用】従来のガードレール接続固定に用いるボルト
(1)の代わりに本発明を用いることで、夜間走行時の
車輌ドライバーに、あたかも、ガードレール全体が再帰
反射しているかのように鮮明に視覚される。これは、通
常2メートル前後の間隔でガードレールが接続されてお
り、各々の接続個所に縦方向に4本から5本のボルト
(1)が2列、すなわち、接続個所ごとに10本前後の
ボルトが使用されており、これをドライバーは狭角の斜
め方向から視覚するため、前記の各々のボルト(1)が
連なって面状に視覚されるのである。
By using the present invention in place of the conventional bolt (1) used for connecting and fixing the guardrail, the driver at night can clearly see as if the entire guardrail is retroreflected. . This is because guardrails are usually connected at intervals of about 2 meters, and four to five bolts (1) are vertically arranged in two rows at each connection point, that is, about 10 bolts per connection point. Since the driver sees this from a narrow oblique direction, each of the bolts (1) is viewed in a plane in a row.

【0007】[0007]

【実施例】以下、実施例について図面を参照して説明す
る。まず、請求項1に記載の本発明の実施例について説
明すると、図1、図2および図3に示すように、従来の
ガードレール接続固定用のボルト(1)の頭部のドーム
状の曲面にガラスビーズ式の反射シート(2)を、前記
曲面に馴染むよう、ヒーター等で加熱圧着して設ける。
本発明に用いる反射シートは、シート加熱の際に、形状
破壊による光学的性能低下がおきにくいガラスビーズ式
の反射シート(2)を使用するのが望ましい。一般的
に、反射シート(2)は、裏面に粘着材が施されている
ため、前述のように加熱圧着して設けるわけであるが、
裏面に粘着材が施されていない反射シート(2)におい
ては、接着剤等で固着して設けてもよい。また、前述の
ガードレール接続固定用のボルト(1)が一般的な六角
ボルト(3)の場合は、図6および図7に示すように、
六角ボルト(3)の頭部の側面に各々反射シート(2)
を設けるとよい。
Embodiments will be described below with reference to the drawings. First, an embodiment of the present invention described in claim 1 will be described. As shown in FIGS. 1, 2 and 3, the conventional guardrail connection fixing bolt (1) has a dome-shaped curved surface at the head thereof. A reflection sheet (2) of a glass bead type is provided by being heat-pressed with a heater or the like so as to conform to the curved surface.
As the reflection sheet used in the present invention, it is desirable to use a glass bead-type reflection sheet (2) in which the optical performance hardly deteriorates due to shape destruction when heating the sheet. Generally, since the reflection sheet (2) has an adhesive material on the back surface, the reflection sheet (2) is provided by heating and pressing as described above.
In the reflection sheet (2) in which the back surface is not provided with an adhesive material, the reflection sheet (2) may be fixedly provided with an adhesive or the like. When the above-mentioned guard rail connection fixing bolt (1) is a general hexagon bolt (3), as shown in FIG. 6 and FIG.
Reflective sheet (2) on each side of the head of hexagon bolt (3)
Should be provided.

【0008】次に、請求項2に記載の本発明の実施例に
ついて説明すると、図4、図5および図3に示すよう
に、仮に当該ボルト(1)のボルト径を12ミリメート
ルとした場合、該頭部の形状を縦19ミリメートル、横
21ミリメートル、高さ2ミリメートルの立方体の上面
に曲率半径が10.7ミリメートルの円柱面を設けた形
状とし、前記円柱面にコーナーキューブ式の反射シート
(2)を粘着して設ける。
Next, an embodiment of the present invention described in claim 2 will be described. As shown in FIGS. 4, 5 and 3, if the bolt diameter of the bolt (1) is 12 mm, The shape of the head is a cube having a length of 19 mm, a width of 21 mm, and a height of 2 mm, and a cylindrical surface having a radius of curvature of 10.7 mm provided on an upper surface of the cube. 2) is provided by adhesion.

【0009】請求項1および請求項2に記載の本発明は
以上のような構造で、これを使用するときは、従来のガ
ードレール接続固定用のボルト(1)の代わりに使用す
ればよい。すると、夜間走行中の車輌のヘッドライトか
ら発せられる光線を本発明が再帰反射し、車輌ドライバ
ーに効果的に視覚せしめる。
The present invention described in claims 1 and 2 has the above-mentioned structure, and when it is used, it may be used instead of the conventional guard rail connection fixing bolt (1). Then, the present invention retroreflects the light rays emitted from the headlights of the vehicle running at night, and makes the vehicle driver effectively visualize.

【0010】[0010]

【発明の効果】ガードレールの接続固定に使用するボル
ト(1)の頭部を反射式としたことで、当該ボルト
(1)が斜視により連結して見える視覚効果により、夜
間走行時の車輌ドライバーに、あたかも、ガードレール
全体が再帰反射しているかのように視覚され、夜間の前
方の道路状況を鮮明に視覚することが可能となり、視認
不足からくる夜間の交通事故防止に大きな効果が望め
る。また、本発明に使用する反射シート(2)は4平方
センチメートル程度の極めて少量のものでよく、製造コ
スト面において、極めて安価である。特に、請求項2に
記載の本発明においては、ボルトの頭部の形状を円柱面
形状とすることで、投影面積の増大と、走行車輌が本発
明に接近することによってヘッドライト光の本発明に入
射する角度が変化しても効果的な再帰反射を可能とす
る。尚かつ、従来のガードレール接続固定用のボルト
(1)は、ボルトの首部分の一部の切断面形状が四角形
であり、ガードレールのボルト固定穴も四角形であるた
め、当該ボルト(1)の頭部の形状は締め付けを要しな
いためドーム形状となっているが、請求項2に記載の本
発明の場合、該頭部にスパナ等がかけられる側面が2面
存在するため、前述の首部の切断面形状がすべて円形で
あっても、スパナ等でかしめることが可能である。
According to the present invention, the head of the bolt (1) used for connecting and fixing the guardrail is of a reflection type, so that the visual effect that the bolt (1) is connected by a perspective can be provided to the vehicle driver at night driving. As if the entire guardrail is retroreflected, it is possible to clearly see the road conditions ahead at night, and a great effect can be expected in preventing nighttime traffic accidents caused by insufficient visibility. Further, the reflection sheet (2) used in the present invention may be a very small one of about 4 square centimeters, and is extremely inexpensive in terms of manufacturing cost. In particular, in the present invention described in claim 2, the shape of the head of the bolt is cylindrical, so that the projected area is increased, and the headlight light of the present invention is increased by the traveling vehicle approaching the present invention. Even if the angle of incidence on the surface changes. In addition, in the conventional bolt (1) for connecting and fixing the guard rail, a part of the neck portion of the bolt has a square cut surface shape, and the bolt fixing hole of the guard rail is also square. The shape of the portion is a dome shape because it does not require tightening, but in the case of the present invention according to claim 2, since there are two side surfaces on which a wrench or the like is mounted on the head, the above-mentioned neck portion is cut. Even if the surface shapes are all circular, it can be swaged with a spanner or the like.

【図面の簡単な説明】[Brief description of the drawings]

【図1】請求項1に記載の本発明の上面図である。FIG. 1 is a top view of the present invention according to claim 1;

【図2】請求項1に記載の本発明の正面図である。FIG. 2 is a front view of the present invention described in claim 1;

【図3】請求項1および請求項2に記載の本発明の断面
図である。
FIG. 3 is a cross-sectional view of the present invention described in claims 1 and 2;

【図4】請求項2に記載の本発明の上面図である。FIG. 4 is a top view of the present invention according to claim 2;

【図5】請求項2に記載の本発明の正面図である。FIG. 5 is a front view of the present invention described in claim 2;

【図6】請求項1に記載の本発明の実施例で説明する六
角ボルトの上面図である。
FIG. 6 is a top view of a hexagon bolt described in the embodiment of the present invention described in claim 1;

【図7】請求項1に記載の本発明の実施例で説明する六
角ボルトの正面図である。
FIG. 7 is a front view of a hexagon bolt described in the embodiment of the present invention described in claim 1;

【符号の説明】[Explanation of symbols]

1 ボルト 2 反射シート 3 六角ボルト 1 bolt 2 reflective sheet 3 hexagon bolt

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】ボルトの頭部に反射シート(2)を設けた
ことを特徴とする反射ボルト。
1. A reflection bolt, wherein a reflection sheet (2) is provided on the head of the bolt.
【請求項2】頭部の上面を円柱面形状としたことを特徴
とする請求項1に記載の反射ボルト。
2. The reflection bolt according to claim 1, wherein the upper surface of the head has a cylindrical shape.
JP9354063A 1997-12-09 1997-12-09 Reflecting bolt Pending JPH11173319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9354063A JPH11173319A (en) 1997-12-09 1997-12-09 Reflecting bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9354063A JPH11173319A (en) 1997-12-09 1997-12-09 Reflecting bolt

Publications (1)

Publication Number Publication Date
JPH11173319A true JPH11173319A (en) 1999-06-29

Family

ID=18435053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9354063A Pending JPH11173319A (en) 1997-12-09 1997-12-09 Reflecting bolt

Country Status (1)

Country Link
JP (1) JPH11173319A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100418368B1 (en) * 2001-09-26 2004-02-14 김광태 Traffic sign board for guide rail
KR100824740B1 (en) 2007-03-13 2008-04-24 주식회사 클레이맥스 Boundary stone for protecting passengers and construction method thereof
JP2015078485A (en) * 2013-10-15 2015-04-23 日本プロテクト株式会社 Wire rope fastening fitting
JP2017203283A (en) * 2016-05-10 2017-11-16 Jfe建材株式会社 Tunnel interior structure, interior panel and connector
JP2017203323A (en) * 2016-05-12 2017-11-16 Jfe建材株式会社 Reinforcing structure of tunnel and connector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100418368B1 (en) * 2001-09-26 2004-02-14 김광태 Traffic sign board for guide rail
KR100824740B1 (en) 2007-03-13 2008-04-24 주식회사 클레이맥스 Boundary stone for protecting passengers and construction method thereof
JP2015078485A (en) * 2013-10-15 2015-04-23 日本プロテクト株式会社 Wire rope fastening fitting
JP2017203283A (en) * 2016-05-10 2017-11-16 Jfe建材株式会社 Tunnel interior structure, interior panel and connector
JP2017203323A (en) * 2016-05-12 2017-11-16 Jfe建材株式会社 Reinforcing structure of tunnel and connector

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