JP2004169362A

JP2004169362A - Marking device

Info

Publication number: JP2004169362A
Application number: JP2002335061A
Authority: JP
Inventors: Akira Abe; 彰阿部; Masaru Shimizu; 大清水
Original assignee: Lintec Corp
Current assignee: Lintec Corp
Priority date: 2002-11-19
Filing date: 2002-11-19
Publication date: 2004-06-17
Anticipated expiration: 2022-11-19
Also published as: JP4094410B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a marking device being capable of visually recognizing a marking installed at a gloomy place distinctly and having excellent power saving properties. <P>SOLUTION: The marking device is composed of a marking, in which a light-accumulating layer is formed inside or outside a marking base material such as a sheet, a film, a light-guiding board or the like and a display section having no light-accumulating function is installed to the marking base material, and an ultraviolet LED capable of intermittently lighting the marking device. The ultraviolet LED is mounted so that the light-accumulating layer can be irradiated with ultraviolet rays generated from the LED, and a reflecting layer is secured on the side, on which the display section for the light-accumulating layer is not fitted, as required. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、標識装置に関し、詳しくは夜間などの薄暗い場所に設けられた標識を明瞭に視認でき、省電力性に優れた標識装置に関する。
【０００２】
【従来の技術】
従来、災害時の広域非難場所を示す標識などの各種標識を薄暗い場所で明瞭に視認することができるようになっていなかった。このため、災害などで停電した時に、夜間にはその標識を視認できないという問題点があった。
それを解消するために、蓄光材で標識を作ることが考えられる。蓄光材は、照射された光を吸収して、蓄積し、その後所定時間遅れて蓄積した光を発する機能を有するものである。例えば、登録実用新案公報「実用新案登録第３０７７６１２号」には、鉄道駅の構内の昇り階段の立ち上がり面に蓄光材を含む標識部材を装着し、蛍光灯により光を当てると、蛍光灯を消灯した後にも蓄光材の自発光により標識を認識できることが提案されている。
しかしながら、蓄光材は、日中太陽光により励起したエネルギーを暗くなり始めた薄暮時に放出してしまうため、夜間の発光が弱く、明瞭に視認できないという問題点があった。
【０００３】
【発明が解決しようとする課題】
本発明は、上記従来技術の状況に鑑みてなされたものであり、薄暗い場所に設けられた標識を明瞭に視認でき、省電力性に優れた標識装置を提供することを目的とする。
【０００４】
【課題を解決するための手段】
本発明者らは、上記課題を解決するために鋭意検討を行った結果、内部又は外部に蓄光層が形成されている標識基材に、蓄光機能のない表示部を設け、さらに紫外線ＬＥＤ（発光ダイオード）から発生される紫外線光が前記蓄光層に照射できるように該紫外線ＬＥＤを取り付けるにより、上記課題を解決することができることを見い出し、この知見に基づいて本発明を完成するに至った。
【０００５】
すなわち、本発明は、内部又は外部に蓄光層が形成されている標識基材に、蓄光機能のない表示部が設けられている標識、及び間欠的に点灯させることができる紫外線ＬＥＤから成り、該紫外線ＬＥＤから発生される紫外線光が前記蓄光層に照射できるように該紫外線ＬＥＤが取り付けられていることを特徴とする標識装置を提供するものである。
また、本発明は、上記標識装置において、標識基材が導光板であり、紫外線ＬＥＤが導光板の側面に取り付けられている標識装置を提供するものである。
また、本発明は、上記標識装置において、蓄光層の表示部が設けられていない側に、反射層が設けられている標識装置を提供するものである。
また、本発明は、上記標識装置において、紫外線ＬＥＤを点灯させる電源として太陽電池が取り付けられている標識装置を提供するものである。
以下、本発明を詳細に説明する。
【０００６】
【発明の実施の形態】
本発明の標識装置を図面に基づいて説明する。
本発明の標識装置は、標識１と紫外線ＬＥＤ６を有し、標識１は標識基材２を有する。
標識基材２の具体例としては、板材、フィルム又はシートなどが挙げられる。板材の例としては、木板；鉄、ステンレス、メラミン樹脂、ウレタン樹脂などの樹脂で塗装された鋼板などの金属板；ガラス板などが挙げられる。フィルム又はシートを構成する材料は、例えば上質紙、コート紙、グラシン紙等の各種紙材、各種合成紙材、及びポリエチレン樹脂、ポリプロピレン樹脂などのポリオレフィン樹脂、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂などのポリエステル樹脂、アセテート樹脂、ＡＢＳ樹脂、ポリスチレン樹脂、塩化ビニル樹脂、アクリル樹脂、ポリカーボネート樹脂などの種々のプラスチックなどが挙げられる。
フィルム又はシートは、着色されていてもよいし、無色透明のものでもよい。
板材、フィルム又はシートの厚みは、特に制限ないが、通常０．２〜１０ｍｍであり、好ましくは１〜１０ｍｍである。
【０００７】
また、標識基材２は、導光板７であってもよい。
導光板７は、紫外線透過性の良好な透明板であり、例えばアクリル樹脂板、ポリカーボネート樹脂板、光学ガラス板などが挙げられる。導光板７の紫外線透過率は、４０％以上が好ましく、７０％以上がより好ましい。
導光板７の厚みは、適宜選定すればよいが、通常０．３〜３０ｍｍが好ましく、０．５〜２０ｍｍがより好ましく、２〜１０ｍｍが特に好ましい。
導光板７の形状は、特に制限ないが、導光板７の端面の形状は光源の形状に合わせて選定することが好ましい。
導光板７の大きさは、用途に応じて適宜選定すればよいが、標識１の大きさに合わせて選定すればよい。
【０００８】
本発明において、標識基材２の内部又は外部には、蓄光層３が形成されている。蓄光層３は、標識基材２の表面に直接又は他の部材を介して形成されていてもよいし、標識基材２の内部に形成されいてもよいし、標識基材２の全体が蓄光層３であってもよい。
蓄光層３は、太陽光、紫外線光などの光が照射された場合、光を蓄積し、光の照射を止めてもその後も発光する現象を引き起こす機能を有するものである。光の照射を止めた後に光を発光する時間を残光時間というが、蓄光層３としては、残光時間が長い方が好ましく、８時間以上のものが特に好ましい。
蓄光層３は、蓄光剤を混合した樹脂フィルム又はシートで形成したものであってもよいし、蓄光剤を含有するインキを塗布又は印刷することにより形成したものであってもよい。
適当な蓄光剤の市販品としては、例えば、アルミン酸系蓄光剤（商品名「ルミノーバ」、根本特殊化学（株）製）などが挙げられる。
【０００９】
標識１には、蓄光機能のない表示部５が設けられている。表示部５が蓄光機能がなく、表示部５は発光しないので、表示部５の周辺の蓄光層が発光することにより、暗闇の中でも発光しない表示部５を看者が認識することができる。
表示部５は、標識１の内容を意味するものであり、文字、図形、模様などで構成されるものが挙げられる。標識１が避難標識である場合は、表示部５は、避難標識のマーク、「広域避難場所」、「一時避難場所」、「避難場所」などの避難場所であることを示す文字、避難場所名などで構成される。
表示部５は、看者が見ることができるように標識１に設けられていればよいが、標識基材２又は蓄光層３の表面に設けられることが好ましい。表示部５は、標識基材２又は蓄光層３の表面に直接設けてもよいし、表示部５を設けた透明なフィルム又はシートを標識基材２又は蓄光層３の表面に積層することにより標識基材２又は蓄光層３の表面に設けてもよい。さらに、表示部５を設けた透明なフィルム又はシートを別の透明なフィルム又はシートなどを介して標識基材２又は蓄光層３の表面に積層してもよい。
表示部５は、印刷、塗布、熱転写、フィルム貼りなどの方法により形成することができる。
【００１０】
本発明の標識装置においては、間欠的に点灯させることができる紫外線ＬＥＤ６が設けられている。紫外線ＬＥＤ６は、紫外線を発光するものであり、特に３５０〜４００ｎｍの励起波長の紫外線を発光するものが好ましい。
紫外線ＬＥＤ６の市販品としては、商品名「ＴＧパープルＥ１Ｓ０９−０Ｐ０ＡＰ−０２」（豊田合成（株）製）などが挙げられる。
紫外線ＬＥＤ６は間欠的に点灯されるが、通常、標識装置の蓄光層は残光輝度が時間の経過と共に弱くなるものであるので、紫外線ＬＥＤ６からの紫外線光が照射された蓄光層が残光により強く発光している間は、紫外線ＬＥＤ６は点灯しなくてもよく、残光が弱くなると紫外線ＬＥＤ６を点灯して紫外線光を照射すればよい。標識装置の残光輝度は０．１５ｃｄ／ｍ^２以上にすることが好ましい。
紫外線ＬＥＤが点灯した際の紫外線強度は、蓄光層の発光の輝度が十分な値になるように選定すればよいが、ＬＥＤより１０ｍｍ離れた位置で０．１ｍＷ／ｍ^２以上が好ましい。
紫外線ＬＥＤ６の点灯時間、消灯時間の間隔は適宜選定すればよいが、１〜５分、好ましくは１〜３分点灯、５〜２０分、好ましくは８〜１２分消灯を繰り返すことが好ましい。これにより、点灯時間が短縮でき、蛍光灯による照射に比べて電力消費量は１／６〜１／６０以下にすることができる。
【００１１】
紫外線ＬＥＤ６を点灯させるための電源は、電力会社からの送電電気でもよいが、太陽電池が標識装置の設置場所を選ばず、また省資源になるので好ましい。
なお、紫外線ＬＥＤ６の他に、蛍光灯、ブラックライトなどの蓄光層を励起させることができる補助光源を使用してもよい。
紫外線ＬＥＤ６は、紫外線ＬＥＤ６から発生される紫外線光が前記蓄光層に照射できるように取り付けられていればよく、例えば、標識１の表面の近傍に取り付けてもよいし、導光板７の側端面に貼り付けるなどして直接取り付けてもよい。
紫外線ＬＥＤ６を標識１の表面の近傍に取り付ける場合、取り付け箇所は標識１の上方、下方又は側方のいずれであってもよい。好ましいものとしては、図１に示されるものが挙げられる。紫外線ＬＥＤ６の取り付け場所と標識１の表面との距離は、標識１の表面からの垂直距離で通常１０〜１００ｍｍが好ましく、２０〜５０ｍｍが特に好ましい。
【００１２】
本発明においては、蓄光層３の表示部が設けられていない側に、反射層４を設けることが好ましい。反射層４は、蓄光層３から発せられる光を反射して、標識の表面に効率的に届ける機能をするものである。
反射層４を設けた標識１の構成としては、例えば、図２に示すように、表面に表示部５を形成した蓄光層３の裏面に反射層４が設けられ、さらに反射層４の裏面に標識基材２が設けられている標識、図３に示すように、導光板７の裏面に表示部５が形成され、その表示部５を蓄光層３で被覆され、さらに蓄光層３の裏面に反射層４が設けられている標識、図４に示すように、表面に表示部５を形成した導光板７の裏面に蓄光層３が設けられ、さらに蓄光層３の裏面に反射層４が設けられている標識、図５に示すように、表面に表示部５を形成した蓄光層３の裏面に導光板７が設けられ、さらに導光板７の裏面に反射層４が設けられている標識などが挙げられる。これらのうち、図３及び図４に示される構成のものが好ましい。
反射層としては、酸化チタン、亜鉛華、炭酸カルシウム等白色顔料を塩化ビニル樹脂やポリエステル樹脂に練り込んだ白色フィルム、前記白色顔料を含む白色インキによる白色印刷層、アルミニウム蒸着樹脂フィルムなどが挙げられる。
前記標識基材、蓄光層、及び反射層は、それぞれ接着剤層を介して積層してもよいし、接着剤層を設けないで直接積層してもよい。
本発明の標識装置は、屋外に設置されてもよいし、屋内に設置されてもよい。
【００１３】
【実施例】
次に、本発明を実施例によりさらに具体的に説明する。なお、本発明は、これらの例によって何ら制限されるものではない。
（実施例１）
アクリル樹脂シート（厚み５ｍｍ）から成る標識基材２の表面に、片面にアクリル粘着剤層（厚み１０μｍ）を設けた白色塩化ビニル樹脂（塩化ビニル樹脂１００質量部あたり酸化チタン６０質量部を混練したもの）フィルム（厚み８０μｍ）を該粘着剤層を介して積層して反射層４を形成した。さらに、反射層４の表面に、片面にアクリル粘着剤層（厚み１０μｍ）を設けた蓄光塩化ビニル樹脂（塩化ビニル樹脂１００質量部当たり蓄光顔料（商品名「ルミノーバ」、根本特殊化学（株）製）２００質量部を混練したもの）フィルム（厚み２８０μｍ）を該粘着剤層を介して積層して蓄光層３を形成した。続いて、蓄光層３の表面にスクリーン印刷機で、図１に示す図柄を黒色インキで印刷して蓄光機能のない表示部５を形成し、標識１を作成した。
【００１４】
次に、標識１の上方に、標識の表面に紫外線を照射できるように標識の表面から垂直方向に５ｃｍ離れた位置に紫外線ＬＥＤ（商品名「ＴＧパープルＥ１Ｓ０９−０Ｐ０ＡＰ−０２」、豊田合成（株）製）を８個連結して取り付けて、標識装置を製造した（図１、２）。
標識装置の残光輝度の測定試験は、紫外線ＬＥＤ（ＬＥＤより１．０ｃｍ離れた位置の紫外線強度は０．１ｍＷ／ｃｍ^２）により２分間照射し、照射を止めた後の各経過時間毎に、紫外線ＬＥＤの直下の輝度を測定した。標識装置の残光輝度を表１に示す。
製造した標識装置について、紫外線ＬＥＤを２分間点灯し、蓄光層に紫外線を照射し、次いで紫外線ＬＥＤを１０分間消灯し、この点灯、消灯を２４時間繰り返した。この間の標識装置の輝度は、０．１５５ｃｄ／ｍ^２以上であり、標識を明瞭に視認できた。
また、紫外線ＬＥＤに、太陽電池及びバッテリー等から成る発電装置を接続し、１週間屋外に設置したところ、昼間は太陽光で、夜間は紫外線ＬＥＤが点灯と消灯を繰り返すことにより標識装置が発光し、標識を１日中明瞭に視認できた。
【００１５】
（実施例２）
標識基材７としての紫外線透過タイプのアクリル樹脂製導光板（商品名「アクリライト＃０００」、三菱レーヨン（株）製、厚さ１０ｍｍ、紫外線透過率８５％）の表面にスクリーン印刷機で、図１に示す図柄を黒色インキで印刷して蓄光機能のない表示部５を形成し、標識基材７の表示部５を形成した面に、実施例１の片面にアクリル粘着剤層を設けた蓄光塩化ビニル樹脂フィルムを該粘着剤層を介して積層して蓄光層３を形成した。さらに、蓄光層３の表面に、実施例１の片面にアクリル粘着剤層を設けた白色塩化ビニル樹脂フィルムを該粘着剤層を介して積層して反射層４を形成し、標識１を作成した。
【００１６】
次に、図３に示すように標識基材７の上端面に紫外線ＬＥＤ６（商品名「ＴＧパープルＥ１Ｓ０９−０Ｐ０ＡＰ−０２」、豊田合成（株）製）を８個連結したものを直接取り付け、一方他の側端面を白色塩化ビニル樹脂フィルムで覆い、標識装置を製造した。
標識装置の残光輝度の測定試験は、紫外線ＬＥＤ（ＬＥＤより１．０ｃｍ離れた位置の紫外線強度は０．１ｍＷ／ｃｍ^２）により２分間照射し、照射を止めた後の各経過時間毎に、標識装置表面の輝度を測定した。標識装置の残光輝度を表１に示す。
製造した標識装置について、紫外線ＬＥＤを２分間点灯し、蓄光層に紫外線を照射し、次いで紫外線ＬＥＤを１０分間消灯し、この点灯、消灯を２４時間繰り返した。この間の標識装置の輝度は、０．１５３ｃｄ／ｍ^２以上であり、標識を明瞭に視認できた。
また、紫外線ＬＥＤに、太陽電池及びバッテリー等から成る発電装置を接続し、１週間屋外に設置したところ、昼間は太陽光で、夜間は紫外線ＬＥＤが点灯と消灯を繰り返すことにより標識装置が発光し、標識を１日中明瞭に視認できた。
【００１７】
（実施例３）
標識基材７としての実施例２の紫外線透過タイプのアクリル樹脂製導光板の表面に、予め図１に示す図柄にカッティングマシンで裁断した黒色の粘着フィルム（商品名「フジペイント」、リンテック（株）製）を貼付して蓄光機能のない表示部５を形成し、標識基材７の表示部５を形成した面の反対面に、実施例１の片面にアクリル粘着剤層を設けた蓄光塩化ビニル樹脂フィルムを該粘着剤層を介して積層して蓄光層３を形成した。さらに、蓄光層３の表面に、実施例１の片面にアクリル粘着剤層を設けた白色塩化ビニル樹脂フィルムを該粘着剤層を介して積層して反射層４を形成し、標識１を作成した。
【００１８】
次に、実施例２と同様、図４に示すように標識基材７の上端面に紫外線ＬＥＤ６を取り付け、他の側端面を白色塩化ビニル樹脂フィルムで覆い、標識装置を製造した。
標識装置の残光輝度の測定試験は、紫外線ＬＥＤ（ＬＥＤより１．０ｃｍ離れた位置の紫外線強度は０．１ｍＷ／ｃｍ^２）により２分間照射し、照射を止めた後の各経過時間毎に、標識装置表面の輝度を測定した。標識装置の残光輝度を表１に示す。
製造した標識装置について、紫外線ＬＥＤを２分間点灯し、蓄光層に紫外線を照射し、次いで紫外線ＬＥＤを１０分間消灯し、この点灯、消灯を２４時間繰り返した。この間の標識装置の輝度は、０．１５８ｃｄ／ｍ^２以上であり、標識を明瞭に視認できた。
また、紫外線ＬＥＤに、太陽電池及びバッテリー等から成る発電装置を接続し、１週間屋外に設置したところ、昼間は太陽光で、夜間は紫外線ＬＥＤが点灯と消灯を繰り返すことにより標識装置が発光し、標識を１日中明瞭に視認できた。
【００１９】
（実施例４）
標識基材７としての実施例２の紫外線透過タイプのアクリル樹脂製導光板の表面に、実施例１の片面にアクリル粘着剤層を設けた蓄光塩化ビニル樹脂フィルムを該粘着剤層を介して積層して蓄光層３を形成し、標識基材７の蓄光層を形成した反対面に、実施例１の片面にアクリル粘着剤層を設けた白色塩化ビニル樹脂フィルムを該粘着剤層を介して積層して反射層４を形成した。さらに、蓄光層３表面に、スクリーン印刷機で、図１に示す図柄を黒色インキで印刷して蓄光機能のない表示部５を形成し、標識１を作成した。
【００２０】
次に、実施例２と同様、図５に示すように標識基材７の上端面に紫外線ＬＥＤ６を取り付け、他の側端面を白色塩化ビニル樹脂フィルムで覆い、標識装置を製造した。
標識装置の残光輝度の測定試験は、紫外線ＬＥＤ（ＬＥＤより１．０ｃｍ離れた位置の紫外線強度は０．１ｍＷ／ｃｍ^２）により２分間照射し、照射を止めた後の各経過時間毎に、標識装置表面の輝度を測定した。標識装置の残光輝度を表１に示す。
製造した標識装置について、紫外線ＬＥＤを２分間点灯し、蓄光層に紫外線を照射し、次いで紫外線ＬＥＤを１０分間消灯し、この点灯、消灯を２４時間繰り返した。この間の標識装置の輝度は、０．１５６ｃｄ／ｍ^２以上であり、標識を明瞭に視認できた。
また、紫外線ＬＥＤに、太陽電池及びバッテリー等から成る発電装置を接続し、１週間屋外に設置したところ、昼間は太陽光で、夜間は紫外線ＬＥＤが点灯と消灯を繰り返すことにより標識装置が発光し、標識を１日中明瞭に視認できた。
【００２１】
【表１】

（比較例１）
実施例１の標識装置を屋外に設置し、ＬＥＤを発光させないで置いたところ、日没とともに標識面の輝度が低下し、日没後１時間では殆ど発光がみられず、標識は視認できなかった。
【００２２】
【発明の効果】
本発明の標識装置は、薄暗い場所に設けられた標識を明瞭に視認でき、省電力性に優れている。
【図面の簡単な説明】
【図１】本発明の標識装置の一実施例の概略を示した斜視図である。
【図２】本発明の標識装置の一実施例の概略であって、標識基材、蓄光層及び反射層の各層の部分を拡大して示した断面図である。
【図３】導光板を用いている本発明の標識装置の第１の一実施例の概略であって、導光板、蓄光層及び反射層の各層の部分を拡大して示した断面図である。
【図４】導光板を用いている本発明の標識装置の第２の一実施例の概略であって、導光板、蓄光層及び反射層の各層の部分を拡大して示した断面図である。
【図５】導光板を用いている本発明の標識装置の第３の一実施例の概略であって、導光板、蓄光層及び反射層の各層の部分を拡大して示した断面図である。
【符号の説明】
１標識
２標識基材
３蓄光層
４反射層
５表示部
６紫外線ＬＥＤ
７導光板
８紫外線ＬＥＤ支持板[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sign device, and more particularly, to a sign device that can clearly recognize a sign provided in a dimly lit place such as at night and is excellent in power saving.
[0002]
[Prior art]
Conventionally, it has not been possible to clearly recognize various signs such as signs indicating a wide-area refuge place at the time of disaster in a dark place. For this reason, when a power failure occurs due to a disaster or the like, there is a problem that the sign cannot be visually recognized at night.
In order to solve this, it is conceivable to make a sign with a phosphorescent material. The light storage material has a function of absorbing and accumulating the irradiated light, and then emitting the accumulated light with a predetermined delay. For example, in the Registered Utility Model Gazette “Utility Model Registration No. 3077612”, a sign member including a phosphorescent material is attached to the rising surface of the ascending stairs in the yard of a railway station, and when fluorescent light is applied, the fluorescent light is turned off. It has been proposed that the marker can be recognized by the self-emission of the light storage material even after the above.
However, since the phosphorescent material emits the energy excited by sunlight during the daytime at dusk when it starts to darken, there is a problem in that the light emission at night is weak and the light can not be clearly recognized.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of the situation of the related art described above, and an object of the present invention is to provide a sign device that can clearly recognize a sign provided in a dim place and has excellent power saving.
[0004]
[Means for Solving the Problems]
The present inventors have conducted intensive studies in order to solve the above-described problems, and as a result, provided a display unit without a light storage function on a marker substrate having a light storage layer formed inside or outside, and further provided an ultraviolet LED (light-emitting LED). It has been found that the above problem can be solved by mounting the ultraviolet LED so that the ultraviolet light generated from the diode) can irradiate the phosphorescent layer, and based on this finding, the present invention has been completed.
[0005]
That is, the present invention comprises a sign provided with a display unit without a light-storing function on a sign base on which a light-storing layer is formed inside or outside, and an ultraviolet LED that can be intermittently turned on. An object of the present invention is to provide a sign device characterized in that the ultraviolet LED is attached so that ultraviolet light generated from the ultraviolet LED can be applied to the light storage layer.
Further, the present invention provides a marker device in which the marker substrate is a light guide plate and the ultraviolet LED is attached to a side surface of the light guide plate.
The present invention also provides a sign device in which, in the sign device, a reflective layer is provided on a side of the light-storing layer where the display unit is not provided.
The present invention also provides a marker device in which a solar cell is attached as a power source for turning on an ultraviolet LED in the marker device.
Hereinafter, the present invention will be described in detail.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
A sign device according to the present invention will be described with reference to the drawings.
The sign device of the present invention has a sign 1 and an ultraviolet LED 6, and the sign 1 has a sign substrate 2.
Specific examples of the label substrate 2 include a plate material, a film or a sheet. Examples of the plate material include a wooden plate; a metal plate such as a steel plate coated with a resin such as iron, stainless steel, melamine resin, and urethane resin; and a glass plate. Materials constituting the film or sheet include, for example, high-quality paper, coated paper, various paper materials such as glassine paper, various synthetic paper materials, and polyethylene resins, polyolefin resins such as polypropylene resins, polybutylene terephthalate resins, polyethylene terephthalate resins, and the like. Examples include various plastics such as polyester resin, acetate resin, ABS resin, polystyrene resin, vinyl chloride resin, acrylic resin, and polycarbonate resin.
The film or sheet may be colored or colorless and transparent.
The thickness of the plate, film or sheet is not particularly limited, but is usually 0.2 to 10 mm, preferably 1 to 10 mm.
[0007]
Further, the label base 2 may be a light guide plate 7.
The light guide plate 7 is a transparent plate having good ultraviolet transmittance, and examples thereof include an acrylic resin plate, a polycarbonate resin plate, and an optical glass plate. The ultraviolet transmittance of the light guide plate 7 is preferably 40% or more, more preferably 70% or more.
The thickness of the light guide plate 7 may be appropriately selected, but is usually preferably 0.3 to 30 mm, more preferably 0.5 to 20 mm, and particularly preferably 2 to 10 mm.
The shape of the light guide plate 7 is not particularly limited, but the shape of the end face of the light guide plate 7 is preferably selected according to the shape of the light source.
The size of the light guide plate 7 may be appropriately selected according to the application, but may be selected according to the size of the sign 1.
[0008]
In the present invention, the luminous layer 3 is formed inside or outside the marker substrate 2. The luminous layer 3 may be formed directly or via another member on the surface of the marker substrate 2, may be formed inside the marker substrate 2, or the entire marker substrate 2 may be luminous. The layer 3 may be used.
The light storage layer 3 has a function of accumulating light when irradiated with light such as sunlight or ultraviolet light, and causing a phenomenon of emitting light even after the irradiation of light is stopped. The time during which light is emitted after the light irradiation is stopped is referred to as afterglow time. The luminous layer 3 preferably has a long afterglow time, and more preferably has an afterglow time of 8 hours or more.
The phosphorescent layer 3 may be formed of a resin film or sheet mixed with a phosphorescent agent, or may be formed by applying or printing an ink containing a phosphorescent agent.
Commercially available suitable phosphorescent agents include, for example, aluminate-based phosphorescent agents (trade name “Luminova”, manufactured by Nemoto Special Chemical Co., Ltd.).
[0009]
The sign 1 is provided with a display unit 5 having no light storage function. Since the display unit 5 does not have a light storage function and the display unit 5 does not emit light, the light storage layer around the display unit 5 emits light, so that the viewer can recognize the display unit 5 that does not emit light even in darkness.
The display unit 5 means the contents of the sign 1, and includes a display composed of characters, figures, patterns, and the like. When the sign 1 is an evacuation sign, the display unit 5 displays an evacuation sign mark, characters indicating that the area is an evacuation place such as a "wide evacuation area", a "temporary evacuation area", or an "evacuation area", and an evacuation area name. It is composed of
The display unit 5 may be provided on the sign 1 so that a viewer can see it, but is preferably provided on the surface of the sign base 2 or the light storage layer 3. The display unit 5 may be provided directly on the surface of the marker substrate 2 or the phosphorescent layer 3, or by laminating a transparent film or sheet provided with the display unit 5 on the surface of the marker substrate 2 or the phosphorescent layer 3. It may be provided on the surface of the label substrate 2 or the luminous layer 3. Further, a transparent film or sheet provided with the display unit 5 may be laminated on the surface of the marker substrate 2 or the luminous layer 3 via another transparent film or sheet.
The display unit 5 can be formed by a method such as printing, coating, thermal transfer, and film sticking.
[0010]
In the sign device of the present invention, an ultraviolet LED 6 that can be turned on intermittently is provided. The ultraviolet LED 6 emits ultraviolet light, and particularly preferably emits ultraviolet light having an excitation wavelength of 350 to 400 nm.
Commercial products of the ultraviolet LED 6 include “TG Purple E1S09-0P0AP-02” (trade name, manufactured by Toyoda Gosei Co., Ltd.).
Although the ultraviolet LED 6 is intermittently turned on, the luminous layer of the marker device usually has a luminous intensity that decreases with time. The ultraviolet LED 6 does not need to be turned on during the strong light emission. When the afterglow is weak, the ultraviolet LED 6 may be turned on to emit the ultraviolet light. It is preferable that the afterglow luminance of the marker device is 0.15 cd / m ² or more.
The intensity of the ultraviolet light when the ultraviolet LED is turned on may be selected so that the luminance of the light emitted from the light storage layer has a sufficient value, but is preferably 0.1 mW / m ² or more at a position 10 mm away from the LED.
The interval between the lighting time and the lighting time of the ultraviolet LED 6 may be appropriately selected, but it is preferable to repeat lighting for 1 to 5 minutes, preferably for 1 to 3 minutes, and for 5 to 20 minutes, preferably for 8 to 12 minutes. As a result, the lighting time can be shortened, and the power consumption can be reduced to 1/6 to 1/60 or less as compared with the irradiation by the fluorescent lamp.
[0011]
The power source for turning on the ultraviolet LED 6 may be power transmitted from a power company, but a solar cell is preferable because it can be used in any place of the sign device and saves resources.
Note that, in addition to the ultraviolet LED 6, an auxiliary light source that can excite a luminous layer such as a fluorescent lamp or a black light may be used.
The ultraviolet LED 6 only needs to be attached so that ultraviolet light generated from the ultraviolet LED 6 can irradiate the light storage layer. For example, the ultraviolet LED 6 may be attached near the surface of the sign 1, or may be attached to the side end surface of the light guide plate 7. It may be attached directly, such as by pasting.
When the ultraviolet LED 6 is attached near the surface of the sign 1, the attachment location may be above, below, or beside the sign 1. Preferred are those shown in FIG. The distance between the mounting location of the ultraviolet LED 6 and the surface of the sign 1 is usually preferably 10 to 100 mm, particularly preferably 20 to 50 mm, as a vertical distance from the surface of the sign 1.
[0012]
In the present invention, it is preferable to provide the reflection layer 4 on the side of the light storage layer 3 where the display unit is not provided. The reflection layer 4 has a function of reflecting light emitted from the light storage layer 3 and efficiently delivering the light to the surface of the sign.
As a configuration of the sign 1 provided with the reflective layer 4, for example, as shown in FIG. 2, the reflective layer 4 is provided on the back surface of the luminous layer 3 having the display unit 5 formed on the front surface, and further on the back surface of the reflective layer 4. The sign provided with the sign substrate 2, as shown in FIG. 3, a display unit 5 is formed on the back surface of the light guide plate 7, and the display unit 5 is covered with the luminous layer 3. The sign provided with the reflective layer 4, as shown in FIG. 4, the light-storing layer 3 is provided on the back surface of the light guide plate 7 having the display unit 5 formed on the surface, and the reflective layer 4 is provided on the back surface of the light-storing layer 3. As shown in FIG. 5, a light guide plate 7 is provided on the back surface of the light storage layer 3 having the display unit 5 formed on the front surface, and a reflective layer 4 is provided on the back surface of the light guide plate 7 as shown in FIG. Is mentioned. Of these, the configuration shown in FIGS. 3 and 4 is preferable.
Examples of the reflective layer include a white film obtained by kneading a white pigment such as titanium oxide, zinc white, and calcium carbonate into a vinyl chloride resin or a polyester resin, a white printing layer using a white ink containing the white pigment, an aluminum-deposited resin film, and the like. .
The marker substrate, the luminous layer, and the reflective layer may be laminated via an adhesive layer, respectively, or may be laminated directly without providing an adhesive layer.
The sign device of the present invention may be installed outdoors or indoors.
[0013]
【Example】
Next, the present invention will be described more specifically with reference to examples. The present invention is not limited by these examples.
(Example 1)
A white vinyl chloride resin (60 parts by mass of titanium oxide per 100 parts by mass of vinyl chloride resin) having an acrylic pressure-sensitive adhesive layer (10 μm in thickness) provided on one surface on the surface of a sign substrate 2 made of an acrylic resin sheet (5 mm in thickness) was kneaded. The reflective layer 4 was formed by laminating a film (thickness: 80 μm) via the pressure-sensitive adhesive layer. Furthermore, a phosphorescent vinyl chloride resin (a phosphorescent pigment (trade name "Luminova", manufactured by Nemoto Special Chemical Co., Ltd., per 100 parts by mass of vinyl chloride resin)) provided with an acrylic pressure-sensitive adhesive layer (thickness: 10 μm) on one surface on the surface of the reflective layer 4 ) 200 parts by mass were kneaded) A film (thickness: 280 µm) was laminated via the pressure-sensitive adhesive layer to form a luminous layer 3. Subsequently, the display shown in FIG. 1 was printed with black ink on the surface of the light-storing layer 3 using a screen printer to form a display unit 5 having no light-storing function, and the sign 1 was formed.
[0014]
Next, an ultraviolet LED (trade name: “TG Purple E1S09-0P0AP-02”, Toyoda Gosei Co., Ltd.) is provided above the marker 1 at a position 5 cm vertically away from the surface of the marker so that the surface of the marker can be irradiated with ultraviolet rays. 8) were connected and attached to produce a marker device (FIGS. 1 and 2).
The measurement test of the afterglow luminance of the marker device was performed by irradiating with an ultraviolet LED (ultraviolet light intensity at a position 1.0 cm away from the LED at an intensity of 0.1 mW / cm ² ) for 2 minutes, and for each elapsed time after stopping the irradiation. And the brightness immediately below the ultraviolet LED was measured. Table 1 shows the afterglow luminance of the marker device.
With respect to the manufactured marker device, the ultraviolet LED was turned on for 2 minutes, the luminous layer was irradiated with ultraviolet light, then the ultraviolet LED was turned off for 10 minutes, and the lighting and turning off were repeated for 24 hours. During this time, the luminance of the sign device was 0.155 cd / m ² or more, and the sign was clearly visible.
In addition, when a power generation device consisting of a solar cell and a battery is connected to the ultraviolet LED and installed outdoors for one week, the sign device emits light by daylight during the daytime and by turning on and off the ultraviolet LED at nighttime. The marker was clearly visible throughout the day.
[0015]
(Example 2)
A screen printing machine is used on the surface of a UV-transmissive acrylic resin light guide plate (trade name “Acrylite # 000”, manufactured by Mitsubishi Rayon Co., Ltd., thickness 10 mm, UV transmittance 85%) as a marker substrate 7. The design shown in FIG. 1 was printed with black ink to form the display unit 5 having no light storage function, and the acrylic adhesive layer was provided on one surface of Example 1 on the surface of the marker substrate 7 on which the display unit 5 was formed. A luminous layer 3 was formed by laminating a luminous vinyl chloride resin film via the pressure-sensitive adhesive layer. Furthermore, a white vinyl chloride resin film provided with an acrylic pressure-sensitive adhesive layer on one surface of Example 1 was laminated on the surface of the light-storing layer 3 via the pressure-sensitive adhesive layer to form a reflective layer 4, thereby forming a sign 1. .
[0016]
Next, as shown in FIG. 3, an ultraviolet LED 6 (trade name “TG Purple E1S09-0P0AP-02”, manufactured by Toyoda Gosei Co., Ltd.) connected directly to the upper end surface of the marker substrate 7 is directly attached. The other side end surface was covered with a white vinyl chloride resin film to produce a marking device.
The measurement test of the afterglow luminance of the marker device was performed by irradiating with an ultraviolet LED (ultraviolet light intensity at a position 1.0 cm away from the LED at an intensity of 0.1 mW / cm ² ) for 2 minutes, and for each elapsed time after stopping the irradiation. The luminance of the surface of the marker was measured. Table 1 shows the afterglow luminance of the marker device.
With respect to the manufactured marker device, the ultraviolet LED was turned on for 2 minutes, the luminous layer was irradiated with ultraviolet light, then the ultraviolet LED was turned off for 10 minutes, and the lighting and turning off were repeated for 24 hours. During this time, the luminance of the sign device was 0.153 cd / m ² or more, and the sign was clearly visible.
In addition, when a power generation device consisting of a solar cell and a battery is connected to the ultraviolet LED and installed outdoors for one week, the sign device emits light by daylight during the daytime and by turning on and off the ultraviolet LED at nighttime. The marker was clearly visible throughout the day.
[0017]
(Example 3)
A black adhesive film (trade name “Fuji Paint”, Lintec Co., Ltd.) preliminarily cut by a cutting machine into the pattern shown in FIG. 1 on the surface of the ultraviolet-permeable acrylic resin light guide plate of Example 2 as the marker substrate 7 )) To form a display unit 5 having no luminous function, and a phosphor substrate having an acrylic pressure-sensitive adhesive layer provided on one side of Example 1 on the opposite side to the surface on which the display unit 5 of the sign base 7 is formed. A luminous layer 3 was formed by laminating a vinyl resin film via the adhesive layer. Furthermore, a white vinyl chloride resin film provided with an acrylic pressure-sensitive adhesive layer on one surface of Example 1 was laminated on the surface of the light-storing layer 3 via the pressure-sensitive adhesive layer to form a reflective layer 4, thereby forming a sign 1. .
[0018]
Next, as in Example 2, as shown in FIG. 4, an ultraviolet LED 6 was attached to the upper end surface of the marker substrate 7, and the other side surface was covered with a white vinyl chloride resin film, thereby producing a marker device.
The measurement test of the afterglow luminance of the marker device was performed by irradiating with an ultraviolet LED (ultraviolet light intensity at a position 1.0 cm away from the LED at an intensity of 0.1 mW / cm ² ) for 2 minutes, and for each elapsed time after stopping the irradiation. The luminance of the surface of the marker was measured. Table 1 shows the afterglow luminance of the marker device.
With respect to the manufactured marker device, the ultraviolet LED was turned on for 2 minutes, the luminous layer was irradiated with ultraviolet light, then the ultraviolet LED was turned off for 10 minutes, and the lighting and turning off were repeated for 24 hours. During this time, the luminance of the sign device was 0.158 cd / m ² or more, and the sign was clearly visible.
In addition, when a power generation device consisting of a solar cell and a battery is connected to the ultraviolet LED and installed outdoors for one week, the sign device emits light by daylight during the daytime and by turning on and off the ultraviolet LED at nighttime. The marker was clearly visible throughout the day.
[0019]
(Example 4)
A luminous vinyl chloride resin film having an acrylic pressure-sensitive adhesive layer provided on one side of Example 1 is laminated on the surface of the ultraviolet-transmitting acrylic resin light guide plate of Example 2 as the marker substrate 7 via the pressure-sensitive adhesive layer. To form a luminous layer 3, and a white vinyl chloride resin film provided with an acrylic pressure-sensitive adhesive layer on one side of Example 1 on the opposite side of the marker substrate 7 on which the luminous layer was formed via the pressure-sensitive adhesive layer Thus, a reflective layer 4 was formed. Further, the display shown in FIG. 1 was printed with black ink on the surface of the luminous layer 3 using a screen printer to form a display unit 5 having no luminous function.
[0020]
Next, as in Example 2, as shown in FIG. 5, an ultraviolet LED 6 was attached to the upper end surface of the marker substrate 7, and the other side surface was covered with a white vinyl chloride resin film, thereby producing a marker device.
The measurement test of the afterglow luminance of the marker device was performed by irradiating with an ultraviolet LED (ultraviolet intensity at a position 1.0 cm away from the LED at an intensity of 0.1 mW / cm ² ) for 2 minutes, and for each elapsed time after the irradiation was stopped. The luminance of the surface of the marker was measured. Table 1 shows the afterglow luminance of the marker device.
With respect to the manufactured marker device, the ultraviolet LED was turned on for 2 minutes, the luminous layer was irradiated with ultraviolet light, then the ultraviolet LED was turned off for 10 minutes, and the lighting and turning off were repeated for 24 hours. During this time, the luminance of the sign device was 0.156 cd / m ² or more, and the sign was clearly visible.
In addition, when a power generation device including a solar cell and a battery is connected to the ultraviolet LED and installed outdoors for one week, the sign device emits light by daylight during the daytime and by turning on and off the ultraviolet LED at nighttime. The marker was clearly visible throughout the day.
[0021]
[Table 1]

(Comparative Example 1)
When the sign device of Example 1 was installed outdoors and the LED was not turned on, the luminance of the sign surface decreased with sunset, and almost no light was seen one hour after sunset, and the sign was not visible. .
[0022]
【The invention's effect】
INDUSTRIAL APPLICABILITY The sign device of the present invention can clearly recognize a sign provided in a dim place, and is excellent in power saving.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing an embodiment of a marker device of the present invention.
FIG. 2 is a schematic view of an embodiment of the sign device of the present invention, and is a cross-sectional view showing an enlarged portion of each layer of a sign substrate, a luminous layer, and a reflective layer.
FIG. 3 is a schematic view of a first embodiment of the sign device of the present invention using a light guide plate, and is an enlarged cross-sectional view showing portions of each layer of a light guide plate, a light storage layer and a reflection layer. .
FIG. 4 is a schematic view of a second embodiment of the sign device of the present invention using a light guide plate, and is an enlarged cross-sectional view showing each part of a light guide plate, a light storage layer, and a reflection layer. .
FIG. 5 is a schematic view of a third embodiment of the sign device of the present invention using a light guide plate, and is an enlarged cross-sectional view showing each part of a light guide plate, a light storage layer, and a reflection layer. .
[Explanation of symbols]
REFERENCE SIGNS LIST 1 sign 2 sign substrate 3 luminous layer 4 reflective layer 5 display unit 6 ultraviolet LED
7 light guide plate 8 UV LED support plate

Claims

It is composed of a sign provided with a display unit having no light-storing function on a sign base on which a light-storing layer is formed inside or outside, and an ultraviolet LED which can be intermittently turned on, and is generated from the ultraviolet LED. A marker device, wherein the ultraviolet LED is attached so that ultraviolet light can be applied to the luminous layer.

The sign device according to claim 1, wherein the sign substrate is a light guide plate, and the ultraviolet LED is attached to a side surface of the light guide plate.

The sign device according to claim 1, wherein a reflection layer is provided on a side of the light storage layer where the display unit is not provided.

The marker device according to any one of claims 1 to 3, wherein a solar cell is mounted as a power source for turning on the ultraviolet LED.