JP4099403B2 - Self-luminous gaze guidance mark - Google Patents

Description

【００５３】
イ）はｎ＝０でＰ＝７、ロ）はｎ＝１でＰ＝１７の場合を示すもので、いずれも発光部１０間の間隔ａは均一なものとなされ、ｎ＝２以上のＰ＝３７，６１，９１，１２７，１６９等の場合でも同様となる。かかる配置により、上述の如く、視線誘導標の前面を均一の発光輝度とすることができ、視線誘導効果を高めることができる。
【００５４】
図１０は、本発明に係わる発光部の、配置の他の例を示す正面図である。発光部１０は間隔ｂをおいた複数の同心円Ｃ上に、それぞれの同心円Ｃ上において等間隔で発光部１０が配置されている。同心円Ｃ１、Ｃ２、Ｃ３上における発光部１０の間隔ａ１、ａ２、ａ３は徐々に広くなされているが、同心円Ｃ４上の発光部１０の間隔ａ４は、直ぐ内側の発光部１０の間隔ａ３より小さくなされている。
【００５５】
本実施形態においては、間隔ａ４は間隔ａ３より小さくなされているが、間隔ａ１、ａ２、ａ３のいずれか１つより小さくなされていればよく、同心円間における発光輝度の高低によるコントラストにより、視線誘導標の遠近感が把握できるようになる。
【００５６】
図１１は、本発明に係わるＬＥＤ群を説明する正面図である。発光部１０の配置は図１０に示した配置と同一であるが、１２ヶ所に位置決め手段５が配置され、また波線にて囲った５個の発光部１０にそれぞれ配置されたＬＥＤ（図示せず）は、回路により直列に接続されてＬＥＤ群Ｇが９個形成され、合計４５個の発光部１０が配置されている。
【００５７】
かかるＬＥＤ群Ｇを配置することで、各々の発光部１０に関してそれぞれ同一のレンズ、ＬＥＤ、給電手段及び制御手段を用いて複雑な調整を必要とすることなく同一の発光輝度を得ることができ、蓄電手段、電流制御回路等を簡潔なものとできる。
【００５８】
図１２は、発光部及びその残余の部位を説明する正面図である。前面板３に発光部１０が配置された残余の部位Ｚが、前面側からの光線を再帰反射する再帰反射部となされていてもよい。更には、前面板３に発光部１０が配置された残余の部位Ｚを黒又はそれに近い色調としておくか、又は前面板３を透明なものとして、背面側の回路基板等を黒又はそれに近い色調としておき、前面板３を透して背後の黒又はそれに近い色調が見えるようにしておけば、発光部１０と残余の部位Ｚとの色調のコントラストにより、昼間における視認性が向上され好ましい。
【００５９】
図１３は、本発明に係わる視線誘導標の、動作の一例を示すブロック図である。発光部１０のＬＥＤ２を発光させるには、明るさ、温度、降雨、霧等の外部センサー３０１を備えたセンサー部３０により測定された外界の状況に係わるデータは制御部２０に送信され、判定部２０２において予め設けられたしきい値に基づき発光のモードが判定される。判定部２０２によって判定された発光のモードに基づき、発光制御部２０１から発光部１０に発光の指示が送られ、その指示を基にＬＥＤ２が発光することで自発光視線誘導標として機能する。尚、前記発光モードの設定が必要とされない場合はセンサー部３０及び判定部２０２は省略してもよい。
【００６０】
上述の如きセンシング、制御及び発光に係わる電力は電源装置７より供給されるが、電源装置７は太陽光の照射により電力を生起する太陽電池パネル７１及び剰余の電力を蓄電する蓄電手段７２を備えたものである。センシング、制御及び発光の内、最大の消費電力量が必要なのは発光であるが、本発明に係わる発光部１０は過剰なＬＥＤを配置することなく高い発光輝度が得られることから消費電力量が少なくて済み、太陽電池パネル７１により生起された電力のみで稼動させる場合においても太陽電池パネル７１の面積を小さくでき、構造上、コスト面において設置における自由度を高めることができる。
【００６１】
また蓄電手段７２は、鉛蓄電池、Ｎｉ−Ｃｄ電池等でもよいが、太陽電池による充放電は極めて頻繁に行われるものであり、また上記の如き電池は廃棄の際に環境への負荷が大きいことから、頻繁な充放電への耐久性が高く、また廃棄の際にも環境への負荷が小さい電気二重層コンデンサを用いるのが好ましい。
【００６２】
図１４〜図１６は本発明に係わる実施の一形態を示す説明図で、視線誘導標が路肩や中央分離帯の端部等に設置されるブリンカーライトである場合である。図１４において、ブリンカーライトＢは発光部１０が複数配設された光線放射部Ｂ１が上下方向に２ヶ所に設けられ、２ヶ所の光線放射部Ｂ１が交互に点滅することで路肩や中央分離帯の存在を道路利用者に喚起し、視線誘導を行うものである。
【００６３】
従来のブリンカーライトは、光源として白熱灯を用いる場合が多かったが、当然のことながらＬＥＤなどと較べて寿命が短く、メンテナンスに手間がかかるために光源としてＬＥＤを用いる試みがなされてきていた。しかしながら、ブリンカーライトは夜間のみならず、昼間においても発光により道路利用者が注意を喚起できるだけの発光輝度が必要であり、ＬＥＤを光源としてその様な発光輝度を得るには集中して多数のＬＥＤを配設する必要があるといった課題を有していた。
【００６４】
本発明に係わる発光部１０を用いた自発光視線誘導標によれば、ＬＥＤを用いてメンテナンスの手間を軽減し、また視線誘導が必要な方向に高い発光輝度がえられることから、上記の如き課題を解決し、高い視線誘導効果により交通安全に貢献できるものである。
【００６５】
本実施形態におけるブリンカーライトＢは、光線放射部Ｂ１が取り付けられた前面扉部Ｂ２と、支柱Ｂ４に固定された太陽電池パネル７１及び背面部Ｂ３とからなり、留め金Ｂ５を外すことで前面扉部Ｂ２が左開きするようになされ、内部の配線やメンテナンスが行えるようになされている。
【００６６】
図１５は、ブリンカーライトＢの前面扉部Ｂ２が左開きされた状態を示す説明図である。背面部Ｂ３には制御部２０及び電源装置７が取り付けられ、電源装置７と発光部１０とが配線Ｂ６により接続されているが、メンテナンス時等において、突風により突然前側扉部Ｂ２が開きすぎて配線Ｂ６が破損する恐れがあることから、前側扉部Ｂ２と背面部Ｂ３との間の上方に開き止め金具Ｂ７が取り付けられている。
【００６７】
図１６はその開き止め金具Ｂ７の詳細を示すもので、図１２のＤ−Ｄ断面図である。前面扉部Ｂ２及び背面部Ｂ３は、閉鎖時にはその間に挟持されたパッキンＢ８により内部の空間は密閉されている。開き止め金具Ｂ７は前側扉部Ｂ２側には回動軸Ｂ２１により水平方向に回転可能に固定されると共に、背面部Ｂ３側には上方に突設された突起部Ｂ７１が形成されている。前側扉部Ｂ２が左開きされると、回動軸Ｂ２１は背面部Ｂ３から遠ざかってゆき、突起部Ｂ７１が背面部Ｂ３の上面から下方に折り曲げられた折り曲げ部Ｂ３１に当接したところで、前面扉部Ｂ２は開き止め金具Ｂ７によりそれ以上左開きすることがなくなる。かかる構造の開き止め金具Ｂ７を用いることで、簡易な構造で前面扉部Ｂ２の開放角度を制限でき、耐久性の高い開き止め機構を容易に設けることができる。
【００６８】
図１７及び図１８は本発明に係わる実施の一形態を示す説明図で、視線誘導標が主に路肩に複数略等間隔に立設され、運転者の視線を誘導するデリニェーターである場合である。図１７において、デリニェーターＤは道路Ｒの側縁に沿って設置され、発光部１０や制御部等が一体化された本体Ｄ１が、太陽電池パネル７１と共に支柱Ｄ２に取り付けられて形成されて、発光部１０が点滅することで道路利用者に対し視線誘導を行うものである。
【００６９】
従来のデリニェーターは、プリズム等の反射体を用いる反射式のものと、光源としてＬＥＤなどを用いる自発光式のものがあり、自発光式のものの方が道路利用者に対し点滅等行うことで能動的に視線誘導を行うことができ、また濃霧や降雪時等の視程障害時でも視認でき視線誘導効果が高いものであるが、自発光式のものはブリンカーライトの場合と同様、十分な道路利用者が注意を喚起できるだけの発光輝度を得るには前面に集中して多数のＬＥＤを配設する必要がある。しかしながら、十分な視線誘導を行うに当たっては連続してデリニェーターを配置する必要があり、コストの高い多数のＬＥＤを配設したデリニェーターを連続して配置するのは費用対効果を考慮すると躊躇される場合が多い。
【００７０】
本発明に係わる発光部１０を用いた自発光視線誘導標によれば、視線誘導が必要な方向に高い発光輝度がえられることから、上記の如き課題を解決し、高い視線誘導効果により交通安全に貢献できるものである。またＬＥＤの数を少なくして発光部１０による消費電力を低減できることで、電力供給を太陽電池パネル７１のみに限った場合でも太陽電池パネル７１の面積を小さいものとでき、設置における構造面、コスト面における自由度は格段に高められる。
【００７１】
かかる複数のデリニェーターＤについては、公知の如く標準電波（ＪＪＹ）やＧＰＳ電波等による同期システムを付加して自動車の進行方向に併せて全灯、全消を繰り返すものとしてもよく、また各種センサーによるセンシングに基づいて発光パターンを種々変化させるものであってもよい。
【００７２】
図１８は、前記デリニェーターＤの本体Ｄ１の詳細を示す説明図で、イ）は正面図、ロ）はイ）のＥ線における側断面図である。イ）において、支柱Ｄ２に取り付けられた本体Ｄ１は、前面板３の中央に円形の再帰反射体Ｄ１１が取り付けられ、再帰反射体Ｄ１１を取り囲むように６個の発光部１０が設けられて形成されている。
【００７３】
ロ）において、前述の視線誘導標と同様に、回路基板４にＬＥＤ２が一体に取り付けられ、円錐状のレンズ１が備えられた前面板３に回路基板４が位置決め手段５を介して取り付けられることで円錐状のレンズ１の背後にＬＥＤ２が配置されて発光部１０が形成される。ＬＥＤ２及び回路基板４は、前面板３及びケースＫ１により中空部Ｋ内に収納され、雨水や結露等による悪影響から保護されている。また中空部Ｋ内には蓄電手段７２が設けられ、ケースＫ１上部に封止材Ｓにより封止されて設けられた太陽電池パネル７１により生起された電力を蓄電し、且つＬＥＤ２が発光するための電力を供給する。
【００７４】
かかる構造により、円形に配置された発光部１０が道路利用者に遠近感を把握し易くして道路の線形の把握等の効果を高めることができる。また円形の再帰反射体Ｄ１１が車両のヘッドライト等を再帰反射できることでデリニェーターＤの前面から放射される光線量を増加させて視線誘導効果を高めることができ、また仮に発光部１０の発光がなされない場合でも夜間において視線誘導標としての機能を完全に喪失することは免れる。
【００７５】
図１９は、デリニェーターＤの本体Ｄ１の、他の実施形態を示す説明図である。まずイ）において、前面板３が両面に配置され、図１８に示した如き発光部１０及び再帰反射体Ｄ１１が太陽電池パネル７１及び蓄電手段７２を挟んで両面に設けられている。両面に設けられた発光部１０のＬＥＤ２は、共通の太陽電池パネル７１及び蓄電手段７２により発光する電力が供給される。
【００７６】
かかる構造により、従来の反射式のものと同様に一体のデリニェーターＤにより両側に対して視線誘導を行うことができる。また自発光視線誘導標において、コストの比重の高い太陽電池パネル７１及び蓄電手段７２を多数使用することなく自発光するものとでき、設置に係わるコストを大幅に低減できる。
【００７７】
次にロ）において、本体Ｄ１の前面板３に設けられた発光部１０Ａ、１０Ｂ、１０Ｃ、１０Ｄは、その光軸Ｌ６と水平面とがなす角度がそれぞれ異ならされているものであり、その角度θは、１０Ａが０度、１０Ｂがθ１、１０Ｃがθ２、１０Ｄがθ３で、θ１＜θ２＜θ３である。道路利用者に視線誘導を行うにおいて、視線誘導の対象となる道路利用者が遠方、近傍、自転車等様々である場合、各々について最適の視認ができる光軸Ｌ６の角度は異なるものとなる。
【００７８】
かかる構造とすることで、発光部１０から放射される光線の指向角が小さいものであっても種々の対象に対して適した光軸Ｌ６の角度で光線を放射し、いずれかの発光部１０が視認に適した光軸Ｌ６の角度となされ、例えば発光部１０Ａ及び１０Ｂは遠方の車両や乗用車に対して視認性が高められ、発光部１０Ｃ及び１０Ｄは近傍のトラックや自転車等に対し視認性が高められることで、視線誘導効果を高めることができる。
【００７９】
図２０及び図２１は本発明に係わる実施の一形態を示す説明図で、視線誘導標が主に雪国の道路に設置され、積雪時における路肩の位置を示す自発光矢羽根である場合である。図２０において自発光矢羽根Ｙは道路Ｒの路肩Ｒ１に沿って設置され、支柱Ｙ２により支持された本体Ｙ１の下端から下方に向けて光線Ｌを放射し、光線Ｌが投影された位置により車両の運転者や除雪車の作業者等が路肩を認識するものである。
【００８０】
従来の自発光矢羽根は、下方に向けて高輝度のＬＥＤから発せられる光線を放射するものが多かったが、高輝度のＬＥＤでは消費電力が大きく、また光線の指向性が強いために光線の投影面積が小さく視認しづらいものであり、またレンズ等によりある程度光線を拡散させても逆に輝度が低下して見づらくなったり、積雪深が大きくなるにつれ投影面積が小さくなるという課題があった。
【００８１】
図２１は図２０の自発光矢羽根の、本体Ｙ１の詳細を示す説明図であるが、本体Ｙ１の下端には本発明に係わる発光部１０が取り付けられ、円筒状の光線を下方に向けて放射できることで上記の如き課題を解決し、とりわけ雪国における高い視線誘導効果を発現し交通安全に貢献できるものである。
【００８２】
図２２は本発明に係わる実施の一形態を示す説明図で、視線誘導標が道路のセンターライン、交差点中央、横断歩道等の路面に設置され、道路利用者に視線誘導等を行う埋込式道路鋲である場合である。本実施形態における埋込式道路鋲Ｊは、本出願人による特開平１１−７１７２６号公報に示される如きもので、イ）は平面図、ロ）は断面図である。イ）において、埋込式道路鋲Ｊは筺体Ｊ３に透明な材質を用いて形成された上面板Ｊ２が嵌着され、上面板Ｊ２の上面にはプリズム部Ｊ１が形成されると共に、筺体Ｊ３の内部側に発光体１０及び太陽電池パネル７１が内装されている。
【００８３】
断面図ロ）において、筺体Ｊ３には太陽電池パネル７１の下方に制御部２０及び蓄電手段７２が設けられ、筺体Ｊ３及び上面板Ｊ２の上面が路面ＧＲと均一になるように埋設されている。発光部１０から放射された光線Ｌ５は、上面板Ｊ２の内部に設けられた傾斜面Ｊ２１により屈曲され、上面板Ｊ２内部を透過してプリズム部Ｊ１の傾斜面Ｊ１１により更に屈曲されて道路利用者に視線誘導を行う。
【００８４】
従来の埋込式道路鋲は概ねＬＥＤを用いて発光させるものであるが、光源の指向角が小さい場合には、プリズム等により屈曲させたとしても一部のみが眩しすぎて道路利用者が眩惑を起こしたり、また発光面積が小さく視認性が低くなることがあり、また光源の指向角が大きい場合には光線が拡散して遠方からの視認性が低下するといった課題があった。
【００８５】
本発明に係わる発光部１０を用いた埋込式道路鋲によれば、発光部１０の広がりを持った光線Ｌ５により、プリズム部Ｌ１等により光線が屈曲されてもその光線Ｌ５の広がりは失われることがなく、且つ光線Ｌ５の拡散も抑えられることから上記の如き課題を解決し、発光部１０が路面より下方に設けられている場合においても高い視線誘導効果を発揮し、交通安全に貢献できるものである。
【００８６】
【発明の効果】
本発明によれば、ＬＥＤから発光される光線を相対向する凸面部により拡散させることなく平行光線とし、更に側方に拡散しようとする光線を円錐状側面により平行光線とすることで、光束を略円筒状の形状のものとしてＬＥＤ単独の場合より広い範囲で、且つ光線の拡散による発光輝度の低下を抑制し、光線が視認される効率を高めることで高い視線誘導効果が得られる。またレンズは円錐状であるからレンズ内部で不要な回折をすることが少なく光線が視認される効率は更に高められる。
【図面の簡単な説明】
【図１】本発明に係わる円錐型のレンズの一例を示す説明図である。
【図２】本発明に係わる発光部における光線の状態を示す断面図である。
【図３】本発明に係わる発光部の、形成の一例を示す説明図である。
【図４】図４のＢ−Ｂ断面図における発光部の形成の一例を示す断面図である。
【図５】図４のＢ−Ｂ断面図における発光部の形成の、他の例を示す断面図である。
【図６】本発明に係わるレンズの、前面板への取り付けの他の例を示す説明図である。
【図７】図６から、更に部材を取り付ける説明図である。
【図８】図７のＣ−Ｃ断面図である。
【図９】本発明に係わる発光部の、配置の一例を示す正面図である。
【図１０】本発明に係わる発光部の、配置の他の例を示す正面図である。
【図１１】本発明に係わるＬＥＤ群の一例を示す正面図である。
【図１２】本発明に係わる発光部とその残余の部位の一例を示す正面図である。
【図１３】本発明に係わる自発光視線誘導標の、動作の一形態を示すブロック図である。
【図１４】本発明に係わる自発光視線誘導標の、実施の一形態を示す説明図である。
【図１５】図１４の前面扉部が左開きした状態を示す説明図である。
【図１６】図１４のＤ−Ｄ断面図である。
【図１７】本発明に係わる自発光視線誘導標の、実施の一形態を示す説明図である。
【図１８】図１７における本体の、実施の一形態を示す説明図である。
【図１９】図１７における本体の、他の実施形態を示す説明図である。
【図２０】本発明に係わる自発光視線誘導標の、実施の一形態を示す説明図である。
【図２１】図２０における本体の詳細を示す説明図である。
【図２２】本発明に係わる自発光視線誘導標の、実施の一形態を示す説明図である。
【符号の説明】
１ レンズ
１１ 凸面部
１２ 円錐状側面
２ ＬＥＤ
３ 前面板
４ 回路基板
５ 位置決め手段
７１ 太陽電池パネル
７２ 蓄電手段
１０ 発光部
Ｃ 同心円
Ｇ ＬＥＤ群
Ｚ 残余の部位
Ｂ ブリンカーライト
Ｄ デリニェーター
Ｙ 自発光矢羽根
Ｊ 埋込式道路鋲[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-luminous line-of-sight guidance sign that is installed mainly on the shoulder of a road or in a median strip and guides the line of sight of a driver of a vehicle.
[0002]
[Prior art]
LEDs have been used favorably for guiding the line of sight to the vehicle driver at night, because the directivity of light is stronger than that of light bulbs, and the light emission life is long and maintenance is less. A number of related inventions have also been disclosed.
[0003]
For example, Patent Literature 1 discloses a line-of-sight guide mark in which a large number of LEDs that emit light from a power source are attached to a substrate.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-31928
[0005]
[Problems to be solved by the invention]
However, in the conventional self-luminous line-of-sight guidance mark, it is necessary to arrange the LEDs with the gap between the LEDs as small as possible in order to emit a predetermined area using an LED having a strong directivity of light rays, and the area is large. This would require a very large number of LEDs. If a high-brightness LED is used in order to increase the light emission luminance, the power consumption by the LED increases and the capacity of the solar cell or capacitor needs to be increased.
[0006]
The present invention has been made in view of the above-described problems, and it is intended to provide a self-luminous line-of-sight guide that can emit light in a wide range by reducing the number of LEDs and can also reduce the power related to light emission. It is.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, the self-luminous gaze guidance mark according to the present invention is a gaze guidance mark that radiates light from a plurality of light emitting units to the front side, and the light emitting unit emits light from the LED to the front side of the LED. A conical lens for total reflection is arranged and formed, The lens has a circular LED hole with a circular cross section on the opposite side to the front side, the bottom surface of the LED hole is a semispherical convex surface, and the side surface of the lens is a conical side surface. The front part is flat, and the light beam of the LED mounted in the LED hole of the lens is radiated to the outside as a parallel light beam by the conical side surface and the convex surface part. It is characterized by this.
[0008]
According to the present invention, the light beam emitted from the LED is converted into a parallel light beam without being diffused by the convex portions facing each other, and the light beam to be diffused to the side is further converted into a parallel light beam by the conical side surface. As a substantially cylindrical shape, it is possible to obtain a high line-of-sight inducing effect by suppressing the decrease in light emission luminance due to the diffusion of light rays and increasing the efficiency with which the light rays are visually recognized. Further, since the lens is conical, unnecessary diffraction inside the lens is reduced, and the efficiency with which light rays are visually recognized is further enhanced.
[0009]
Here, the lens may be formed of a material having a so-called critical angle that is transparent and totally reflects light incident at a certain angle or more in internal reflection, and is made of a transparent material such as polycarbonate resin, acrylic resin, or epoxy resin. It is preferable that the synthetic resin is molded into a shape that is optically designed so that light rays from the LED are totally reflected to the front side by injection molding or the like.
[0010]
Further, if an LED having a certain directivity angle is used, the light beam expanded by the LED to a certain extent is converted into a parallel light beam at the convex surface portion, so that the light beam radiated from the front surface of the lens is biased near the center. Therefore, it is possible to suppress unevenness in the brightness of the light beam radiated to the front surface side and to increase the advantage of using the lens according to the present invention, which is preferable. The directivity angle of the LED is preferably about 5 to 25 degrees.
[0011]
Further, if the lens is disposed on the front surface of each of the plurality of LEDs, it can cope with each individual lens when the lens is damaged and needs to be replaced. It is preferable because it can efficiently radiate to the front surface.
[0012]
In addition, it is preferable that the light emitting units are arranged at equal intervals on the front surface of the visual guidance indicator so that the entire front surface of the visual guidance indicator can emit light with uniform luminance.
[0013]
The light emitting units may be arranged on the concentric circles at equal intervals, and a plurality of concentric circles on which the light emitting units are arranged are provided, and the interval between the plurality of light emitting units is the interval in the outermost concentric circle. If the distance is smaller than the distance between at least one concentric circle on the inner side, the luminance of the outer peripheral portion that tends to be dark can be increased, and further, the perspective of the visual guidance indicator generated by the outer peripheral portion can be enhanced, thereby improving the visual guidance effect. It is done.
[0014]
In addition, the LED is formed by connecting a plurality of LEDs in series, and if a plurality of the LED groups having the same number of LEDs are used, a common device such as a power source for light emission of the LED group is used. However, there is no difference in brightness between the LED groups, and it becomes easy to obtain light emission with uniform brightness.
[0015]
In addition, a front plate that separates the LED from the outside air is provided on the front side of the LED. If the front plate is formed integrally with the lens, it is not necessary to provide a front plate separately. There is no need for labor involved.
[0016]
Further, a front plate that separates the LED from the outside air is provided on the front side of the LED, and if the lens is fitted and integrated with the front plate, it is necessary to align the lens when the front plate is provided. The lens can be easily attached.
[0017]
In addition, the LED is integrally attached to the circuit board, and if the LED and the circuit board are attached to the front plate and the LED is arranged on the rear surface of the lens, it takes troublesome wiring and arrangement of the LED in a fixed position. This is preferable because it can be performed collectively.
[0018]
Further, if the LED is sealed by the front plate and the circuit board, a lens is disposed on the front of the LED, and at the same time, the LED can be sealed and protected from the outside air, rain, condensation, etc. It is preferable that the LED can be protected without the need for.
[0019]
In addition, if the remaining part where the light emitting part is arranged is a retroreflecting part that retroreflects the light from the front side, the front plate can be used as a visual guidance indicator even if the LED does not emit light at night. It is preferable not to lose the function.
[0020]
Moreover, if a photocatalyst containing layer is formed on the outer surface on the front side of the front plate, the outer surface is hydrophilized by activating the photocatalyst by irradiating with ultraviolet rays, and water droplets attached due to rain or the like become a water film. Light rays from the light emitting part are not diffusely reflected, and it is possible to prevent the light emission luminance from being lowered.
[0021]
In addition, it is preferable that the front plate has a super-water-repellent coating layer formed on the outer surface on the front side, which prevents water droplets from adhering and prevents a decrease in light emission luminance due to irregular reflection.
[0022]
Further, if the front plate has a snow-sliding ice covering layer formed on the outer surface on the front side, the front plate can prevent light from being shielded by the attachment of snow and ice, and the function as a line-of-sight guide can be prevented from being impaired.
[0023]
The snow-sliding ice coating layer is as described in Japanese Patent Application Laid-Open No. 2002-294226 filed by the present applicant, and has a water repellency with an outer surface having a surface tension of 35 dyne / cm or less on the base material, and the water droplets slide down. It is a coating layer having a water slidability with an angle of 40 degrees or less, and can quickly slide off adhering snow and ice by its own weight.
[0024]
Further, if the front plate is provided with positioning means for adjusting the distance between the LED and the lens, it is easy to dispose the LED at a distance at which the light beam is totally reflected by the lens.
[0025]
In addition, a plurality of the positioning means are provided, and if the distance between the LED and the lens can be adjusted in each positioning means, even if there is a variation in the light emission luminance due to the molding error of the lens, By adjusting the distance between the LED and the lens, the light emission luminance can be adjusted to be constant.
[0026]
In addition, it is provided with a solar cell and power storage means for storing the electric power generated by the solar cell, and if the LED is caused to emit light using only the electric power generated by the solar cell, a commercial power source or the like is not required. The degree of freedom in installation can be increased, and the trouble of wiring during installation can be reduced.
[0027]
In addition, it is preferable to use an electric double layer capacitor for the electric storage means because the need for maintenance of the electric storage means is reduced even if frequent charging / discharging is performed.
[0028]
If the line-of-sight guide is at least one selected from the group consisting of blinker lights, delineators, self-luminous arrow feathers, and embedded road fences, these line-of-sight guides can be viewed by road users from a specific angle. Since the light beam directivity is strong and a certain light emitting area is required, the advantage of applying the line-of-sight guide according to the present invention can be great.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings.
1A and 1B are explanatory views showing an example of a lens forming a light emitting portion according to the present invention. FIG. 1A is a perspective view, and FIG. In (b), the lens 1 has a conical shape as a whole, and light rays are radiated in the front direction α at the line-of-sight guide. 2), the lens 1 is a solid body made of a highly transparent material, and a circular LED hole 13 having a circular cross section is formed on the opposite side of the front surface side α. The bottom surface is a semicircular convex surface portion 11. Further, the side surface of the lens 1 is a conical side surface 12, and the front surface portion 14 is flat.
[0030]
FIG. 2 is a cross-sectional view showing an embodiment of a light emitting unit according to the present invention. The LED 2 is mounted in the LED hole 13 of the lens 1 to form the light emitting unit 10. A light beam emitted from the light emitting element 21 of the LED 2 and emitted in the front direction α is emitted in the front direction α with a slight spread when emitted from the LED 2, but is refracted by the convex portion 11 and is emitted from the front surface. Go straight in the direction α to become parallel rays,
[0031]
The light beam L2 radiated to the side of the LED 2 enters the lens 1 from the inner surface of the LED hole 13 of the lens 1 and is totally reflected in the front direction α side by the conical side surface 12 formed on the side surface of the lens 1. And emitted as a light ray L4 in the front direction α. Here, the curvature of the conical side surface 12 is such that the light beam L4 is substantially parallel to the front surface direction α according to the refractive index of the material used to form the lens 1 and the incident angle of the light beam L2 incident on the inner surface of the LED hole 13 from the LED 2. If the radius is set and the radius of curvature of the conical side surface 12 is constant on the side surface of the lens 1, it is preferable that the light emitted to the side of the LED 2 can be efficiently emitted in the front direction α regardless of the position of the light emitting element 21. .
[0032]
In the lens 1, the cross section parallel to the front surface 14 may be polygonal, elliptical, or the like, but if it is close to a perfect circle, unnecessary diffraction in the lens 1 can be reduced, and the light beam L 1 emitted from the LED 2, L2 can be guided most efficiently in the front direction α, which is preferable.
[0033]
With such a structure, the shape of the light beam emitted from the light emitting unit 10 is not linear or conical, but close to a cylindrical shape, and the light emitted directly from the LED, or a lens such as a convex lens is disposed in front of the LED group. Compared to the above, the light is diffused moderately so that the light is emitted from a wide area, and the diffusion of the light is suppressed, and the light from the LED 2 is efficiently emitted in the front direction α to increase the luminance. High line-of-sight guidance effect can be obtained without performing excessive arrangement of LEDs.
[0034]
In addition, since the shape of the light emitted from the light emitting unit 10 is cylindrical, if the front surface of the lens 1 is directed to the direction intended for visual line guidance, the light is mainly emitted in the direction targeted for visual line guidance. It is possible to prevent the occurrence of dazzling or the like due to unnecessary light in a direction that is not the target of gaze guidance.
[0035]
The lens 1 may be colorless and transparent. However, in a line-of-sight guide that requires a color tone such as yellow or red, not only the LED 2 that emits a colored light beam but also a color tone that is necessary if it is transparent. The colored lens 1 may be used, or the color tone is set by a combination of the color tone of the colored lens 1 and the color tone of the LED 2, or one of the colored ones emits the other color tone. Any colored light beam may be emitted by changing it according to the color tone.
[0036]
3 and 4 show an embodiment according to the present invention, and are explanatory views showing a state of formation of the visual guidance mark. First, a) of FIG. 3 shows the back side of the front plate of the line-of-sight guide. The front plate 3 has a conical shape as shown in FIGS. A plurality of lenses 1 are attached, and ribs 31 are provided at the periphery. Further, a bolt hole 51 is formed on the back side of the front plate 3, and positioning means 5 for adjusting the distance between the lens 1 and the LED 2 is provided.
[0037]
The lens 1, the rib 31, and the positioning means 5 provided on the front plate 3 may be attached separately or attached by using an adhesive or the like, or may be integrally formed by injection molding or the like. Good. If they are attached as separate bodies, different materials can be used for each member, and the shape can be easily formed with a simple shape. In addition, when it is discarded, it can be decomposed, which is advantageous in recycling the material. If integral molding is performed by injection molding or the like, it is not necessary to adjust the mounting position of the lens 1 and the positioning means 5, and there is no trouble in mounting these members, and the lens 1, the rib 31 and the positioning means are extremely quickly and accurately. 5 can be arranged at a predetermined position.
[0038]
In addition, the lens 1 may have a reflective layer formed on a portion other than the LED hole and the front surface 14 by attaching a reflective sheet, metal vapor deposition, or the like, and the light further leaks from the side surface portion 12 of the lens 1 by the reflective layer. Can be reduced, and the luminance can be increased. The reflective layer may be formed on each of the lenses 1, or may be formed on the entire back side of the front plate 3 after integrally forming the lens 1, the front plate 3 and the like.
[0039]
In (b), the LED 2 attached at a position corresponding to each of the lenses 1 on the circuit board 4 is attached to the front plate 3 together with the circuit board 4, so that the lens 1 is arranged on the front surface of each of the plurality of LEDs 2. The The circuit board 4 has a through hole 41 for attachment to the front plate 3.
[0040]
4 is a cross-sectional view taken along the line B-B of FIG. 3, and in FIG. 3B, the LED 2 attached to the circuit board 4 is inserted into the LED hole 13 of the lens 1 corresponding to each position, and integrated with the front plate 3. The mounting bolt 52 inserted through the through hole 41 is screwed into the bolt hole 51 of the molded positioning means 5, and the LED 2 is sandwiched between the front plate 3 and the circuit board 4 as shown in FIG. A plurality of light emitting portions 10 are formed on the back surface of the lens 1.
[0041]
Providing ribs 31 in advance at the peripheral edge of the front plate 3 not only improves the strength of the front plate 3 and suppresses molding distortion, but also facilitates sealing the LED 2 as described above. Further, an epoxy-based adhesive or a sealing material S such as silicon used for sealing a solar cell is applied to the connection portion between the circuit board 4 and the rib 31 over the entire circumference, and the LED 2 is attached to the front plate 3 and Sealing between the circuit boards 4 is preferable because water and dust can be prevented from entering through the gaps between the members.
[0042]
With this structure, the LED 2 can be inserted into the LED 13 hole of the lens 1, the LED 2 can be aligned with the LED hole 13, the distance between the lens 1 and the LED 2 can be positioned, and the LED 2 can be sealed at the same time. The light emitting part 10 with enhanced durability of the LED 2 can be formed.
[0043]
Furthermore, the distance between the LED 2 around the mounting bolt 52 and the lens 1 can be adjusted by tightening the mounting bolts 52 used, and the plurality of light emitting units 10 can be adjusted due to variations in the molding of the lens 1 or the deviation of the optical axis of the LED 2. When some of the light emission luminances seem to be insufficient, the light emission luminance can be finely adjusted for each of the plurality of light emitting units 10.
[0044]
Further, the LED 2 and the circuit board 4 may be attached to the front plate 3 as shown in FIG. FIG. 5 is a cross-sectional view similar to FIG. 4, but in FIG. 5A, a stepped portion 311 is provided in the middle of the inner surface of the rib 31, and an annular packing 312 is placed on the stepped portion 311. Further, an elastic body 53 that can be contracted by a tightening torque of the mounting bolt 52 is attached to the tip of the positioning means 5.
[0045]
When the mounting bolt 52 is inserted into the through-hole 41 formed in the circuit board 4 and the mounting bolt 52 is screwed into the bolt hole 51 of the positioning means 5, the step portion 311 provided in the circuit board 4 and the rib 31. The annular packing 312 is sandwiched between the two, and the sealing effect of the LED 2 by the front plate 3 and the circuit board 4 can be enhanced. In addition, since the elastic body 53 is sandwiched between the positioning means 5 and the circuit board 4, the distance between the LED 2 and the lens 1 around the mounting bolt 52 can be easily adjusted.
[0046]
6-7 is explanatory drawing which shows other embodiment of attachment of the lens 1 to the front plate 3. As shown in FIG. First, in FIG. 6, the front plate 3 made of a transparent material is provided with a fitting hole 32 and a fitting hole 34 into which the lens 1 and the positioning means 5 can be fitted. A fitting portion 33 is provided. Each of the fitting hole 32 and the fitting hole 34 is not a through hole but a bottomed opening hole. The lens 1 is fitted into the fitting hole 32. The lens 1 is provided with a side wall 15 that is fitted into the fitting hole 32, and a projection 16 is provided on the side wall 15, and the lens 1 is attached to the fitting part 33 so that the lens 1 is attached to the front plate 3. Can be easily and reliably attached.
[0047]
Subsequently, in FIG. 7, the positioning member 5 is fitted into the fitting hole 34, and the pressing member 6 having the through holes 61 and 62 through which the lens 1 and the positioning means 5 can be inserted is the back side of the front plate 3. Attached to. The pressing member 6 may be applied to the front plate 3 by an appropriate method such as adhesive, welding, and screwing.
[0048]
8 is a cross-sectional view taken along the line CC of FIG. In the lens 1 fitted in the fitting hole 32 of the front plate 3, the protrusion 16 is sandwiched between the front plate 3 and the holding member 6 by attaching the holding member 6 to the front plate 3. Can be prevented from coming off. Further, when it becomes unnecessary and is discarded, the lens 1 and the front plate 3 can be disassembled simply by removing the pressing member 6, and processing such as recycling can be easily performed.
[0049]
Further, on the front surface H of the front plate 3, the formation of the front plate 3 is integrally formed, and a photocatalyst-containing layer, a super-water-repellent coating layer, or a snow-sliding ice-coating layer is formed regardless of separate assembly. For example, the hydrophilicity, water repellency, and snow slidability of these coating layers can prevent water droplets and snow and ice from adhering without any particular maintenance, and these factors impair the function as a gaze guidance mark. Can be prevented.
[0050]
Further, the front plate 3 may have a transparent and smooth surface. However, the remaining portion of the light emitting unit 10 may be embossed or milky white, so that weld lines, wrinkles, This is preferable because it makes it difficult to notice defects such as sink marks, and prevents the occurrence of artificial lighting due to reflection or transmission of sunlight in the daytime.
[0051]
FIG. 9 is a front view showing an example of the arrangement of the light emitting units according to the present invention. By arranging the light emitting portions 10 in the center of the regular hexagon to form the honeycomb H and arranging the honeycombs H without gaps, the intervals between the light emitting portions 10 can be uniform. The required number P of honeycombs H is expressed by the following formula 1.
[0052]
[Expression 1]

[0053]
B) shows the case where n = 0 and P = 7, and b) shows n = 1 and P = 17. In both cases, the distance a between the light emitting sections 10 is made uniform, and P = 2 or more. = 37, 61, 91, 127, 169, etc. With this arrangement, as described above, the front surface of the line-of-sight guidance mark can have uniform light emission luminance, and the line-of-sight guidance effect can be enhanced.
[0054]
FIG. 10 is a front view showing another example of the arrangement of the light emitting units according to the present invention. The light emitting units 10 are arranged on a plurality of concentric circles C at intervals b on the concentric circles C at equal intervals. The intervals a1, a2, and a3 of the light emitting units 10 on the concentric circles C1, C2, and C3 are gradually increased, but the interval a4 of the light emitting units 10 on the concentric circle C4 is smaller than the interval a3 of the light emitting units 10 on the inner side. Has been made.
[0055]
In this embodiment, the interval a4 is smaller than the interval a3. However, it is sufficient that the interval a4 is smaller than any one of the intervals a1, a2, and a3, and the line of sight is guided by the contrast due to the level of light emission luminance between the concentric circles. The perspective of the target can be grasped.
[0056]
FIG. 11 is a front view for explaining an LED group according to the present invention. The arrangement of the light emitting units 10 is the same as the arrangement shown in FIG. 10, but the positioning means 5 is arranged at 12 locations, and the LEDs (not shown) are arranged respectively on the five light emitting units 10 surrounded by wavy lines. ) Are connected in series by a circuit to form nine LED groups G, and a total of 45 light emitting units 10 are arranged.
[0057]
By arranging such LED group G, it is possible to obtain the same light emission luminance without requiring complicated adjustment using the same lens, LED, power supply means and control means for each light emitting unit 10, respectively. The power storage means, the current control circuit, etc. can be simplified.
[0058]
FIG. 12 is a front view for explaining the light emitting portion and the remaining portion thereof. The remaining portion Z where the light emitting unit 10 is disposed on the front plate 3 may be a retroreflecting unit that retroreflects the light rays from the front side. Further, the remaining portion Z in which the light emitting unit 10 is disposed on the front plate 3 is set to black or a close color tone, or the front plate 3 is made transparent and the back side circuit board or the like is set to a black or close color tone. It is preferable that the background black or the color tone close thereto can be seen through the front plate 3 because the daytime visibility is improved by the contrast of the color tone between the light emitting portion 10 and the remaining portion Z.
[0059]
FIG. 13 is a block diagram showing an example of the operation of the gaze guidance mark according to the present invention. In order to cause the LED 2 of the light emitting unit 10 to emit light, data related to the external environment measured by the sensor unit 30 including the external sensor 301 such as brightness, temperature, rainfall, and fog is transmitted to the control unit 20, and the determination unit In 202, the light emission mode is determined based on a threshold value provided in advance. Based on the light emission mode determined by the determination unit 202, a light emission instruction is sent from the light emission control unit 201 to the light emission unit 10, and the LED 2 emits light based on the instruction, thereby functioning as a self-luminous visual line guidance mark. In addition, when the setting of the light emission mode is not required, the sensor unit 30 and the determination unit 202 may be omitted.
[0060]
The power related to sensing, control, and light emission as described above is supplied from the power supply device 7. The power supply device 7 includes a solar battery panel 71 that generates power when irradiated with sunlight and a power storage means 72 that stores surplus power. It is a thing. Among sensing, control, and light emission, light emission requires the maximum power consumption. However, the light emitting unit 10 according to the present invention has low power consumption because high light emission luminance can be obtained without arranging excessive LEDs. Even in the case of operating only with the electric power generated by the solar cell panel 71, the area of the solar cell panel 71 can be reduced, and the degree of freedom in installation can be increased in terms of structure and cost.
[0061]
The storage means 72 may be a lead storage battery, a Ni-Cd battery, etc., but charging / discharging by a solar battery is performed very frequently, and the battery as described above has a large environmental load when discarded. Therefore, it is preferable to use an electric double layer capacitor that has high durability against frequent charging / discharging and that has a small environmental load even during disposal.
[0062]
FIGS. 14-16 is explanatory drawing which shows one Embodiment concerning this invention, and is a case where a gaze guidance mark is a blinker light installed in the road shoulder, the edge part of a median strip, etc. FIG. In FIG. 14, the blinker light B has a light emitting part B1 in which a plurality of light emitting parts 10 are arranged at two places in the vertical direction, and the two light emitting parts B1 blink alternately so that the road shoulder and the central separation band. This alerts the road user to the presence of the vehicle and guides his eyes.
[0063]
In the conventional blinker light, an incandescent lamp is often used as a light source. However, as a matter of course, an attempt has been made to use an LED as a light source because it has a shorter life than an LED and requires a lot of maintenance. However, the blinker light needs light emission luminance that can be used to alert the road user not only by nighttime but also by daylight emission. In order to obtain such light emission luminance by using an LED as a light source, many LEDs are concentrated. There is a problem that it is necessary to dispose.
[0064]
According to the self-luminous line-of-sight guidance mark using the light-emitting unit 10 according to the present invention, since the labor of maintenance is reduced by using the LED, and high light emission luminance is obtained in the direction in which the line-of-sight guidance is required, the above-mentioned It solves the problem and contributes to traffic safety with a high gaze guidance effect.
[0065]
The blinker light B in the present embodiment is composed of a front door part B2 to which the light emitting part B1 is attached, a solar cell panel 71 and a rear part B3 fixed to the column B4, and a front door by removing the clasp B5. Part B2 opens leftward so that internal wiring and maintenance can be performed.
[0066]
FIG. 15 is an explanatory diagram showing a state where the front door portion B2 of the blinker light B is opened to the left. The control unit 20 and the power supply device 7 are attached to the back surface B3, and the power supply device 7 and the light emitting unit 10 are connected by the wiring B6. However, during maintenance, the front door B2 suddenly opens too much due to a gust of wind. Since there is a possibility that the wiring B6 is damaged, an opening stopper B7 is attached above the front door portion B2 and the back surface portion B3.
[0067]
FIG. 16 shows the details of the opening metal fitting B7, and is a sectional view taken along the line DD of FIG. The front door part B2 and the rear part B3 have an internal space sealed by a packing B8 sandwiched between them when closed. The opening stopper B7 is fixed to the front door portion B2 side so as to be rotatable in the horizontal direction by a rotation shaft B21, and a protruding portion B71 projecting upward is formed on the back surface portion B3 side. When the front door B2 is opened to the left, the rotation shaft B21 moves away from the back surface B3, and when the projection B71 comes into contact with the bent portion B31 bent downward from the upper surface of the back surface B3, the front door is opened. The part B2 is prevented from further opening to the left by the opening stopper B7. By using the opening stopper B7 having such a structure, the opening angle of the front door B2 can be limited with a simple structure, and a highly durable opening stopper mechanism can be easily provided.
[0068]
FIG. 17 and FIG. 18 are explanatory views showing an embodiment according to the present invention, in which a plurality of line-of-sight guidance signs are mainly erected on the road shoulder at substantially equal intervals to be a delineator for guiding the driver's line of sight. . In FIG. 17, the delineator D is installed along the side edge of the road R, and the main body D1 in which the light emitting unit 10, the control unit, and the like are integrated is attached to the support column D2 together with the solar cell panel 71 to emit light. The unit 10 blinks to guide the line of sight to the road user.
[0069]
Conventional delineators include a reflective type that uses a reflector such as a prism and a self-luminous type that uses an LED or the like as a light source. The self-luminous type is more active by flashing to the road users. It is possible to visually guide the line of sight, and even when the visibility is impaired such as when foggy or snowing, it is highly effective in guiding the line of sight. It is necessary to concentrate a large number of LEDs on the front surface in order to obtain a light emission luminance sufficient for a person to call attention. However, it is necessary to continuously arrange delineators for sufficient line-of-sight guidance, and it is considered that arranging delineators with a large number of high-cost LEDs arranged in consideration of cost effectiveness There are many.
[0070]
According to the self-luminous gaze guidance mark using the light emitting unit 10 according to the present invention, high emission luminance can be obtained in the direction that requires gaze guidance. Therefore, the above-described problems are solved, and traffic safety is achieved by a high gaze guidance effect. It can contribute to. Further, by reducing the number of LEDs and reducing the power consumption by the light emitting unit 10, even when the power supply is limited to only the solar cell panel 71, the area of the solar cell panel 71 can be reduced, and the structure and cost in installation are reduced. The degree of freedom in terms is greatly increased.
[0071]
As for the plurality of delineators D, as is well known, a synchronization system using standard radio waves (JJY), GPS radio waves, etc. may be added to repeat all lights and extinguishes according to the direction of travel of the vehicle. Various emission patterns may be changed based on sensing.
[0072]
18A and 18B are explanatory views showing the details of the main body D1 of the delineator D, in which A) is a front view and B) is a side sectional view taken along line E of A). In (b), the main body D1 attached to the column D2 is formed by attaching a circular retroreflector D11 to the center of the front plate 3 and providing six light emitting units 10 so as to surround the retroreflector D11. ing.
[0073]
In (b), the LED 2 is integrally attached to the circuit board 4 and the circuit board 4 is attached to the front plate 3 provided with the conical lens 1 via the positioning means 5 in the same manner as the above-described visual guidance indicator. Thus, the LED 2 is arranged behind the conical lens 1 to form the light emitting unit 10. The LED 2 and the circuit board 4 are housed in the hollow portion K by the front plate 3 and the case K1, and are protected from adverse effects due to rainwater, condensation, and the like. Further, a power storage means 72 is provided in the hollow portion K, for storing the electric power generated by the solar cell panel 71 provided by sealing the sealing material S on the top of the case K1, and for the LED 2 to emit light. Supply power.
[0074]
With this structure, the light emitting unit 10 arranged in a circle can easily understand the perspective to the road user, and the effect of grasping the road alignment can be enhanced. Further, since the circular retroreflector D11 can retroreflect the vehicle headlight and the like, the amount of light emitted from the front surface of the delineator D can be increased to enhance the gaze guidance effect, and the light emitting unit 10 does not emit light. Even if it is not done, it is unavoidable to completely lose its function as a gaze guide at night.
[0075]
FIG. 19 is an explanatory view showing another embodiment of the main body D1 of the delineator D. As shown in FIG. First, in (a), the front plate 3 is disposed on both sides, and the light emitting section 10 and the retroreflector D11 as shown in FIG. 18 are provided on both sides with the solar cell panel 71 and the power storage means 72 interposed therebetween. The LED 2 of the light emitting unit 10 provided on both sides is supplied with power emitted by the common solar cell panel 71 and the power storage means 72.
[0076]
With such a structure, the line of sight can be guided to both sides by the integrated delineator D as in the conventional reflective type. Further, in the self-luminous line-of-sight guidance mark, it is possible to emit light without using a large number of high-cost solar cell panels 71 and power storage means 72, and the cost for installation can be greatly reduced.
[0077]
Next, in (b), the light emitting portions 10A, 10B, 10C, and 10D provided on the front plate 3 of the main body D1 have different angles formed between the optical axis L6 and the horizontal plane, and the angle θ 10A is 0 degree, 10B is θ1, 10C is θ2, 10D is θ3, and θ1 <θ2 <θ3. When performing gaze guidance to road users, when the number of road users targeted for gaze guidance is various such as far away, in the vicinity, by bicycle, etc., the angle of the optical axis L6 that can be optimally viewed is different.
[0078]
By adopting such a structure, even if the directivity angle of the light beam emitted from the light emitting unit 10 is small, the light beam is emitted at an angle of the optical axis L6 suitable for various objects. Is the angle of the optical axis L6 suitable for visual recognition. For example, the light emitting units 10A and 10B have improved visibility with respect to distant vehicles and passenger cars, and the light emitting units 10C and 10D have visibility with respect to nearby trucks and bicycles. Is enhanced, the gaze guidance effect can be enhanced.
[0079]
FIGS. 20 and 21 are explanatory views showing an embodiment according to the present invention, in which the line-of-sight guide is a self-luminous arrow blade that is mainly installed on a road in a snowy country and indicates the position of the road shoulder during snow accumulation. . In FIG. 20, the self-luminous arrow feather Y is installed along the shoulder R1 of the road R, radiates the light beam L downward from the lower end of the main body Y1 supported by the column Y2, and the vehicle depends on the position where the light beam L is projected. Drivers and snowplow workers recognize the shoulders.
[0080]
Many of the conventional self-luminous arrow feathers radiate light rays emitted from high-brightness LEDs downward. However, high-brightness LEDs have high power consumption and strong directivity of light rays. There is a problem that the projected area is small and difficult to visually recognize, and even if light is diffused to some extent by a lens or the like, the brightness is lowered to make it difficult to see, or the projected area becomes smaller as the snow depth increases.
[0081]
FIG. 21 is an explanatory view showing the details of the main body Y1 of the self-luminous arrow feather of FIG. 20, but the light emitting unit 10 according to the present invention is attached to the lower end of the main body Y1, and the cylindrical light beam is directed downward. The ability to radiate can solve the above-mentioned problems, and in particular, can exhibit a high gaze guidance effect in snowy countries and contribute to traffic safety.
[0082]
FIG. 22 is an explanatory view showing an embodiment according to the present invention. A gaze guidance mark is installed on a road surface such as a center line of a road, the center of an intersection, a pedestrian crossing, etc., and is embedded to perform gaze guidance for road users. This is the case of a road fence. The embedded road fence J in the present embodiment is as shown in Japanese Patent Application Laid-Open No. 11-71726 by the applicant of the present application. A) is a plan view and B) is a cross-sectional view. In (i), the embedded road fence J has an upper surface plate J2 formed of a transparent material fitted to the housing J3, and a prism portion J1 is formed on the upper surface of the upper surface plate J2. The light emitter 10 and the solar cell panel 71 are internally provided on the inner side.
[0083]
In the sectional view B), the control unit 20 and the power storage means 72 are provided below the solar cell panel 71 in the housing J3, and the upper surfaces of the housing J3 and the upper surface plate J2 are embedded so as to be uniform with the road surface GR. The light beam L5 radiated from the light emitting unit 10 is bent by the inclined surface J21 provided inside the upper surface plate J2, passes through the upper surface plate J2, and is further bent by the inclined surface J11 of the prism portion J1 to be road users. Gaze guidance is performed.
[0084]
Conventional embedded road fences generally emit light using LEDs. However, when the light source has a small directivity angle, even if it is bent by a prism or the like, only a part of the light is dazzled and the road user is dazzled. There is a problem that the visibility is low because the light emitting area is small and the visibility is low, and when the directivity angle of the light source is large, the light beam diffuses and the visibility from a distance is lowered.
[0085]
According to the embedded road fence using the light emitting unit 10 according to the present invention, the light beam L5 having the spread of the light emitting unit 10 loses the spread of the light beam L5 even if the light beam is bent by the prism portion L1 or the like. In addition, since the diffusion of the light beam L5 can be suppressed, the above-described problems can be solved, and even when the light emitting unit 10 is provided below the road surface, a high line-of-sight guidance effect can be exhibited, contributing to traffic safety. Is.
[0086]
【The invention's effect】
According to the present invention, the light beam emitted from the LED is converted into a parallel light beam without being diffused by the convex portions facing each other, and the light beam to be diffused to the side is further converted into a parallel light beam by the conical side surface. As a substantially cylindrical shape, it is possible to obtain a high line-of-sight inducing effect by suppressing the decrease in light emission luminance due to the diffusion of light rays and increasing the efficiency with which the light rays are visually recognized. Further, since the lens is conical, unnecessary diffraction inside the lens is reduced, and the efficiency with which light rays are visually recognized is further enhanced.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an example of a conical lens according to the present invention.
FIG. 2 is a cross-sectional view showing a state of light rays in a light emitting unit according to the present invention.
FIG. 3 is an explanatory view showing an example of formation of a light emitting portion according to the present invention.
4 is a cross-sectional view showing an example of formation of a light-emitting portion in the BB cross-sectional view of FIG.
5 is a cross-sectional view showing another example of the formation of the light emitting portion in the BB cross-sectional view of FIG. 4;
FIG. 6 is an explanatory view showing another example of attaching the lens according to the present invention to the front plate.
FIG. 7 is an explanatory diagram for further attaching members from FIG. 6;
8 is a cross-sectional view taken along the line CC of FIG.
FIG. 9 is a front view showing an example of an arrangement of light emitting units according to the present invention.
FIG. 10 is a front view showing another example of the arrangement of the light emitting units according to the present invention.
FIG. 11 is a front view showing an example of an LED group according to the present invention.
FIG. 12 is a front view showing an example of a light emitting unit and the remaining portion according to the present invention.
FIG. 13 is a block diagram showing one mode of operation of the self-luminous line-of-sight guidance mark according to the present invention.
FIG. 14 is an explanatory view showing an embodiment of a self-luminous line-of-sight guidance mark according to the present invention.
15 is an explanatory view showing a state where the front door portion of FIG. 14 is opened to the left.
16 is a sectional view taken along the line DD of FIG.
FIG. 17 is an explanatory diagram showing an embodiment of a self-luminous line-of-sight guidance mark according to the present invention.
18 is an explanatory view showing an embodiment of the main body in FIG.
FIG. 19 is an explanatory view showing another embodiment of the main body in FIG. 17;
FIG. 20 is an explanatory diagram showing an embodiment of a self-luminous line-of-sight guide according to the present invention.
FIG. 21 is an explanatory diagram showing details of the main body in FIG. 20;
FIG. 22 is an explanatory diagram showing an embodiment of a self-luminous line-of-sight guide according to the present invention.
[Explanation of symbols]
1 lens
11 Convex part
12 Conical side
2 LED
3 Front plate
4 Circuit board
5 Positioning means
71 Solar panel
72 Power storage means
10 Light emitting part
C Concentric circle
G LED group
Z Remaining part
B Blinker Light
D Delineator
Y Self-luminous arrow feather
J Recessed road fence

Claims (18)

A line-of-sight guide mark that emits light rays from a plurality of light emitting units to the front side, and the light emitting unit is formed by disposing a conical lens on the front side of the LEDs to totally reflect the light rays from the LEDs to the front side. The lens has a circular LED hole with a circular cross section on the opposite side to the front side, the bottom surface of the LED hole is a semispherical convex portion, and the side surface of the lens is a conical side surface. The self-luminous line of sight is characterized in that the front part is flat and the light rays of the LED mounted in the LED hole of the lens are emitted to the outside as parallel light rays by the conical side surface and the convex surface part. Guide mark.   The self-luminous gaze guidance mark according to claim 1, wherein the lens is disposed on a front surface of each of the plurality of LEDs.   The self-luminous gaze guidance mark according to claim 1, wherein the light emitting units are arranged at equal intervals on the front surface of the gaze guidance mark. The light emitting portions are arranged on a plurality of concentric circles spaced at equal intervals on each concentric circle, and the interval between the light emitting portions on each concentric circle is more than the interval between the light emitting portions arranged on one concentric circle. The interval between the light emitting units arranged on the concentric circles located outside the concentric circles is widened, and the interval between the light emitting units arranged on the outermost concentric circles is the same as that of the light emitting units arranged on at least one inner concentric circle. The self-luminous line-of-sight guidance mark according to claim 1 or 2, wherein the self-luminous line-of-sight guidance mark is smaller than the interval .   5. The LED according to claim 1, wherein a plurality of LEDs are connected in series to form an LED group, and a plurality of the LED groups having the same number of LEDs are used. Luminous gaze guidance mark.   The self-luminous line of sight according to any one of claims 1 to 5, wherein a front plate that separates the LED from outside air is provided on a front side of the LED, and the front plate is formed integrally with a lens. Guide mark.   The front surface of the LED is provided with a front plate that separates the LED from outside air, and a lens is fitted to the front plate to be integrated. Self-luminous gaze guidance mark.   The self-light-emitting device according to claim 6 or 7, wherein the LED is integrally attached to a circuit board, the LED and the circuit board are attached to the front plate, and the LED is disposed on a back surface of the lens. Gaze guidance mark.   The self-luminous gaze guidance mark according to claim 8, wherein the LED is sealed by the front plate and the circuit board.   The self-luminous line-of-sight guidance according to any one of claims 6 to 9, wherein the front plate is configured such that a remaining portion where the light emitting portion is disposed is a retroreflecting portion that retroreflects a light beam from the front side. Mark.   The self-luminous gaze guidance mark according to any one of claims 6 to 10, wherein the front plate has a photocatalyst-containing layer formed on an outer surface on the front side.   The self-luminous gaze guidance mark according to any one of claims 6 to 10, wherein the front plate has a super water-repellent coating layer formed on the outer surface on the front side.   The self-luminous gaze guidance mark according to any one of claims 6 to 10, wherein the front plate has a snow-sliding ice coating layer formed on an outer surface on the front side. Positioning means is provided on the back side of the front plate formed integrally with the conical lens, a through hole is drilled in the circuit board on which the LED is integrally mounted, and the mounting bolt inserted through the through hole includes the above-described mounting bolt. The LED is attached to the front plate together with the circuit board by being screwed into the bolt hole of the positioning means, and the LED is arranged behind the conical lens. The self-luminous line-of-sight guidance mark according to any one of claims 6 to 13 , wherein a distance between the self-luminous line-of-sight guide mark and the distance is adjustable .   The self-luminous gaze guidance mark according to claim 14, wherein a plurality of positioning means are provided, and a distance between the LED and the lens can be adjusted in each positioning means.   16. The LED according to claim 1, further comprising a solar cell and a power storage unit configured to store electric power generated by the solar cell, wherein the LED emits light using only the electric power generated by the solar cell. The self-luminous gaze guidance mark described.   The self-luminous line-of-sight guidance mark according to claim 16, wherein the power storage means is an electric double layer capacitor.   The self-luminous light according to any one of claims 1 to 17, wherein the line-of-sight guide is at least one selected from the group consisting of blinker lights, delineators, self-luminous arrow feathers, and embedded road fences. Gaze guidance mark.

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