JP3832189B2

JP3832189B2 - Lighting equipment and showcase

Info

Publication number: JP3832189B2
Application number: JP2000126837A
Authority: JP
Inventors: 良二横谷
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2000-04-27
Filing date: 2000-04-27
Publication date: 2006-10-11
Anticipated expiration: 2020-04-27
Also published as: JP2001299529A

Description

【０００１】
【発明の属する技術分野】
この発明は、展示ショーケースの照明に用いる照明装置およびショーケースに関するものである。
【０００２】
【従来の技術】
第１の従来例を図２８に示す。すなわち展示用のショーケース２０２の上方の建物の天井２００に設けた別置のスポットライト、ダウンライト等の光源２０１でショーケース２０２の内部を照明するものである。
【０００３】
第２の従来例を図２９に示す。すなわち、第１の従来例においてさらに補助照明として、ケース土台に設置した光源装置２０３から光ファイバ２０４を、ケース２０２の底部から突出させて設置した金属製パイプ２０５内を通して設置し、パイプ２０５の上端に設けた反射鏡２０６で照射方向を制御してショーケース２０２内部を照明するものである。また金属パイプ２０５、反射鏡２０６の代わりに金属フレキシブルチューブを用いたものもある。
【０００４】
第３の従来例を図３０、図３１に示す。図３０は全周展示のタイプ、図３１は片面展示の覗きケースである。ケース２０２の天井部２０７に光源収納ボックスを設け乳白パネル２０８を介してケース２０２の内部を照明するものである。
【０００５】
第４の従来例を図３２に示す。光源装置２０３を土台内部に設置し、光ファイバ２０４を金属製パイプ２０５で形成された透明部材固定用枠の内部を通してケース２０２の上部に導き、ケース２０２の上部から照明するものである。
【０００６】
【発明が解決しようとする課題】
しかし、第１の従来例は、ショーケース２０２と光源２０１が分離しているため、レイアウト変更が不便であり、ケース２０２と光源２０１を個々に移動させる必要があり、天井に光源２０１を設置できる所にしか移動できない。また光源２０１とショーケース２０２の間隔が大きいため配光制御が困難であり、ショーケース２０２を形成する透明部材による反射・屈折により、ケース２０２の底面に影やエッジが出やすい。また光源２０１が高所に設置されるためメンテナンスが不便である。
【０００７】
第２の従来例は金属パイプ２０５が展示物鑑賞の障害となり、ケース２０２の上部にまでパイプ２０５を延ばせない。
【０００８】
第３の従来例は、光源ボックスがケース天井部２０７にあるため、メンテナンスが不便であり、ケース２０２の内部へ赤外線も同時に放射されるため、ケース内の温度が上昇し、ケース２０２の天井部２０７が不透明となるため、展示物の鑑賞の障害となる。
【０００９】
第４の従来例は、金属パイプを用いた透明部材固定用枠２０９が展示物の鑑賞の障害となる。
【００１０】
したがって、この発明の目的は、展示物の鑑賞の障害とならず、配光制御が容易で、メンテナンスが容易な照明装置およびショーケースを提供することである。
【００１１】
【課題を解決するための手段】
請求項１記載の照明装置は、展示物収納部の前面、背面、両側面および上面の少なくとも一部を透明に形成した展示ショーケースに設置する照明装置であって、鑑賞の妨げとならない位置に設置した光源装置と、この光源装置の光を前記展示物収納部の所定の位置まで導光する透明の導光部材と、この導光部材の少なくとも一部の導光光を展示物に照射する方向に制御する光制御部材とを備え、前記導光部材を前記展示ショーケースの土台に任意の長さだけ収納自在に設置したものである。
【００１２】
請求項１記載の照明装置によれば、導光部材は透明であるため展示物鑑賞の障害とならず、美観を損ねない。導光部材によりケース上部まで容易に導光でき、ケースの天井部が透明でも導光部材を設置できる。また光制御部材により配光制御が容易になり、さらに光源装置を鑑賞の妨げとならない位置に設置することによりメンテナンスを容易にできる。また展示物収納部での導光部材の高さを容易に調節でき、任意の高さから展示物を照明できる。
【００１３】
請求項２記載の照明装置は、展示物収納部の前面、背面、両側面及び上面の少なくとも一部を透明に形成した展示ショーケースに設置する照明装置であって、底面の任意の位置からショーケースの内部に設置された透明の導光部材と、前記導光部材の少なくとも一部の導光光を展示物に照射する方向に制御する光制御部材と、前記導光部材の下端から光を導入させる光源装置とを備え、前記導光部材を前記展示ショーケースの土台に任意の長さだけ収納自在に設置したものである。
【００１４】
請求項２記載の照明装置によれば、請求項１と同様な効果がある。
【００１５】
請求項３記載の照明装置は、請求項２において、前記導光部材を板状としたものである。
【００１６】
請求項３記載の照明装置によれば、請求項２と同様な効果がある。
【００１７】
請求項４記載の照明装置は、請求項３において、前記板状の導光部材が前記展示ショーケースの内面に略沿って設けられるものである。
【００１８】
請求項４記載の照明装置によれば、請求項３と同様な効果がある。
【００１９】
請求項５記載の照明装置は、展示物収納部の前面、背面、両側面及び上面の少なくとも一部を透明に形成した展示ショーケースに設置する照明装置であって、底面の少なくとも１つの角から前記展示ショーケースの高さ方向に沿って、前記展示ショーケースの角に近接して設置された透明の棒状の導光部材と、前記導光部材の少なくとも一部の導光光を展示物を照射する方向に制御する光制御部材と、前記導光部材の下端から光を導入させる光源装置とを備え、前記導光部材を前記展示ショーケースの土台に任意の長さだけ収納自在に設置したものである。
【００２０】
請求項５記載の照明装置によれば、請求項１と同様な効果のほか、導光部材が展示物収納部の隅に位置するので、より一層鑑賞を妨げない。
【００２１】
請求項６記載の照明装置は、請求項５において、導光部材の断面形状が、ケース内の角に近接するような多角形形状であるものである。
【００２２】
請求項６記載の照明装置によれば、請求項５と同様な効果のほか、展示物収納部のケースの隅にフィットし、略一体化した状態となるため、より展示物の鑑賞を損ねない。
【００２３】
請求項７記載の照明装置は、展示物収納部の前面、背面、両側面および上面の少なくとも一部を透明に形成した展示ショーケースに設置する照明装置であって、鑑賞の妨げとならない位置に設置した光源装置と、この光源装置の光を前記展示物収納部の所定の位置まで導光する透明の導光部材と、この導光部材の少なくとも一部の導光光を展示物に照射する方向に制御する光制御部材とを備え、前記光源装置からの光の入射端である前記導光部材の一端は前記展示ショーケースの土台内に有り、前記導光部材は前記展示物収納部内で略９０度折れ曲がった構造であり、かつ前記導光部材の前記折れ曲がり部の外側は４５度の鏡面処理が施された平面であり、前記導光部材の表面は平滑であるものである。
【００２４】
請求項７記載の照明装置によれば、導光部材は透明であるため展示物鑑賞の障害とならず、美観を損ねない。導光部材によりケース上部まで容易に導光でき、ケースの天井部が透明でも導光部材を設置できる。また光制御部材により配光制御が容易になり、さらに光源装置を鑑賞の妨げとならない位置に設置することによりメンテナンスを容易にできる。展示物の下面の照明が容易にでき、また導光部材は殆ど光らず透明であるので鑑賞を妨げず目的の場所を効果的に照明できる。
【００２５】
請求項８記載の照明装置は、展示物収納部の前面、背面、両側面及び上面の少なくとも一部を透明に形成した展示ショーケースに設置する照明装置であって、底面の任意の位置からショーケースの内部に設置された透明の導光部材と、前記導光部材の少なくとも一部の導光光を展示物に照射する方向に制御する光制御部材と、前記導光部材の下端から光を導入させる光源装置とを備え、前記光源装置からの光の入射端である前記導光部材の前記下端は前記展示ショーケースの土台内に有り、前記導光部材は前記展示物収納部内で略９０度折れ曲がった構造であり、かつ前記導光部材の前記折れ曲がり部の外側は４５度の鏡面処理が施された平面であり、前記導光部材の表面は平滑であるものである。
【００２６】
請求項８記載の照明装置によれば、請求項７と同様な効果がある。
【００２７】
請求項９記載の照明装置は、展示物収納部の前面、背面、両側面および上面の少なくとも一部を透明に形成した展示ショーケースに設置する照明装置であって、鑑賞の妨げとならない位置に設置した光源装置と、この光源装置の光を前記展示物収納部の所定の位置まで導光する透明の導光部材と、この導光部材の少なくとも一部の導光光を展示物に照射する方向に制御する光制御部材とを備え、前記光制御部材は、前記導光部材の上端の上方に、導光部材長手方向に回転可能な反射鏡を設けているものである。
【００２８】
請求項９記載の照明装置によれば、導光部材は透明であるため展示物鑑賞の障害とならず、美観を損ねない。導光部材によりケース上部まで容易に導光でき、ケースの天井部が透明でも導光部材を設置できる。また光制御部材により配光制御が容易になり、さらに光源装置を鑑賞の妨げとならない位置に設置することによりメンテナンスを容易にできる。また任意の方向に容易に配光制御することができる。
【００２９】
請求項１０記載の照明装置は、展示物収納部の前面、背面、両側面及び上面の少なくとも一部を透明に形成した展示ショーケースに設置する照明装置であって、底面の任意の位置からショーケースの内部に設置された透明の導光部材と、前記導光部材の少なくとも一部の導光光を展示物に照射する方向に制御する光制御部材と、前記導光部材の下端から光を導入させる光源装置とを備え、前記光制御部材は、前記導光部材の上端の上方に、導光部材長手方向に回転可能な反射鏡を設けているものである。
【００３０】
請求項１０記載の照明装置によれば、請求項９と同様な効果がある。
【００３１】
請求項１１記載の照明装置は、請求項９または請求項１０において、前記反射鏡が、前記導光部材の光軸方向を軸として回転可能としたものである。
【００３２】
請求項１１記載の照明装置によれば、請求項９または請求項１０と同様な効果のほか、導光部材の長手方向である光軸方向を軸として回転可能としたため、照射角を任意に変更でき、より幅広い配光制御ができる。
【００３３】
請求項１２記載の照明装置は、請求項９または請求項１０において、前記導光部材の上端部に凸レンズを設置したものである。
【００３４】
請求項１２記載の照明装置によれば、請求項９または請求項１０と同様な効果のほか、照射角を絞った配光ができる。
【００３５】
請求項１３記載の照明装置は、請求項１２において、前記凸レンズと前記導光部材の上端の距離が前記凸レンズの焦点距離の範囲内で前記導光部材の光軸方向に変更できるものである。
【００３６】
請求項１３記載の照明装置によれば、請求項１２と同様な効果のほか、展示物に応じて照射角を任意に変更でき、幅広い配光制御が行なえる。
【００３７】
請求項１４記載のショーケースは、請求項１から請求項１３までのいずれか１項記載の照明装置を有するものである。
【００３８】
請求項１４記載のショーケースによれば、請求項１から請求項１３までのいずれか１項と同様の効果がある。
【００５１】
【発明の実施の形態】
この発明の第１の実施の形態を図１により説明する。すなわち、この照明装置を有するショーケース１０は、展示物収納部９の前面１、背面２、両側面３、４の４面および上面５が透明部材例えばガラスで形成された展示ショーケースである。
【００５２】
このショーケースの照明装置は、導光部材６と、光源装置７と、光制御部材８とを有する。
【００５３】
導光部材６は光源装置７の光を展示物収納部９の所定の位置まで導光する透明体である。実施の形態では、表面が平滑で外から見て透き通って見える透明なアクリル製の板状であり、ショーケース１０の両側面３、４の一対のガラスの内側近傍に展示物収納部９の底面からガラス（３、４）に沿って突き出して設置されている。導光部材６の下端はショーケース土台１１の内部にある。導光部材６の周囲の大部分は屈折率の最も小さい（＝１）空気で覆われる。
【００５４】
光源装置７は、鑑賞の妨げとならない位置に設置している。実施の形態では、ショーケース土台１１の内部に設けられ、導光部材６の下端に沿って導光部材６の下端に配光制御する反射鏡を備えた蛍光灯を設置している。
【００５５】
光制御部材８は、導光部材６の少なくとも一部の導光光を展示物１３に照射する方向に制御する。実施の形態では、導光部材６の上端の上方に、導光部材６からの出射光を反射して展示物１３を照射するように反射鏡を設置している。
【００５６】
蛍光灯（７）からの出射光が直接或いは反射鏡を介して導光部材６に入射する。入射した光は導光部材６中を導光するが、側面が平滑であり、かつその周囲の大部分が低屈折率（＝１）の空気で覆われているため、側面から光が漏れることは殆どない。導光部材６中を導光した光は上端から出射し、その上部に設けられた反射鏡（８）で反射されて、展示物１３を効率よく照明する。
【００５７】
なお、導光部材６の側面は完全な平滑性を有さなくても同様の効果は得られるが、より平滑であるほうが効果は大きい。また導光部材６はアクリル製でなく、屈折率の高い透明な樹脂或いはガラスであっても同様の効果を示す。また光制御部材９である反射鏡の表面は、その目的に応じて鏡面だけでなく拡散処理を施しても良い。
【００５８】
この実施の形態によれば、導光部材６は透明であるため、消灯時はもちろん点灯時でも透明性を有するので展示物１３の鑑賞の障害とならない。従って美観も損ねない。導光部材６はケース１０の上部まで容易に導光できる。ケース１０の天井部である上面５が透明部材でも設置できる。光源装置７が容易に手の届くショーケース土台１１に設置されるのでランプ交換等のメンテナンスが容易である。導光部材６を土台１１に任意の長さだけ収納すれば高さ調節も容易である。ケース１０の内部で照明できるため、ケース１０のガラス等の透明部材の反射・屈折によるケース底面での影及びエッジの発生がない。またショーケース１０の単体で照明できるため、レイアウト変更が容易であり、設置場所も自由である。また紫外線、赤外線が導光部材６で吸収されるため、照射光が展示物１３を痛めない。光源装置７がショーケース１０の土台１１にあるため、照射光の色変更が容易となる。導光部材６の側面が平滑であれば側面からの光漏れが生じないので、点灯時でも導光部材６の側面は殆ど輝度がゼロとなり、より展示物１３の鑑賞を妨げない。
【００５９】
第１の実施の形態の変形の実施の形態を図２に示す。すなわち、図２（ａ）は、光制御部材６としてプリズムを用いている。図２（ｂ）は光源装置７の一部として終端発光タイプの光ファイバ７ａを導光部材６の下端に沿って複数設置したものを用いている。図２（ｃ）は光源装置７として楕円反射鏡を備えたランプ７ｂを、その集光光が導光部材６の下端に入射するように複数配置している。図２（ｄ）は導光部材６の下端に大部分の光を照射する光ファイバ（例えば３Ｍ社製強力サイドライト、ブリジストン社製レイダックロッド）を用いている。
【００６０】
これらの各実施の形態も第１の実施の形態と同様の効果を示す。
【００６１】
この発明の第２の実施の形態を図３に示す。すなわち、この照明装置は、ショーケース１０が鑑賞者がケース１０の上方から鑑賞する覗きケースに適用するものである。ショーケース１０の展示物収納部９は、鑑賞側に対向する背面側の側面が不透明板材１５で、他の側面および上面は透明なガラス板で覆われている。表面が平滑な透明なアクリル製の板状の導光部材６が展示物収納部９の不透明部材１５の内側近傍の底面から、不透明部材１５に沿って上方に突き出して設置されている。導光部材６の下端はショーケース土台１１の内部にある。
【００６２】
光源装置７は、ショーケース土台１１の内部に設置され、導光部材６の下端に沿って導光部材６の下端に配光制御する反射鏡を備えた蛍光灯を設置している。
【００６３】
光制御部材８は、導光部材６の上端の上方に、導光部材６からの出射光を反射して展示物１３を照射するようにプリズムを設置している。
【００６４】
第２の実施の形態は、第１の実施の形態と同様な作用効果を有し、さらに光源装置７のボックスが展示物収納部９内にないため、天面も完全にガラス等により透明にすることができるため、鑑賞領域が広がる。光源装置７が土台１１の内部に位置するため、メンテナンスが容易であり、またメンテナンス時に展示環境（温度、湿度等）を損ねない。
【００６５】
この発明の第３の実施の形態を図４に示す。すなわち、この照明装置は、第１の実施の形態において、ショーケース１０を構成する相対向する１対のガラスが導光部材６を兼ねたものである。光制御部材８は導光部材６の上端部で展示物収納部９の内側に突出したプリズムとなっている。またプリズム上面は鏡面処理が施されている。
【００６６】
動作において、導光部材６であるガラスを導光した光が、その上端に設けられた光制御部材８内に広がって照射され、そのプリズム上面の鏡面及びプリズム下面で１回或いは複数回反射した後、プリズム下面から照射されて展示物１３を照明する。
【００６７】
ショーケース１０を構成する透明部材が導光部材６を兼ねるため、コスト減となり、展示物収納部９内に無駄なパーツがなく、より鑑賞を妨げない。
【００６８】
その他は第１の実施の形態と同様である。
【００６９】
この発明の第４の実施の形態を図５に示す。すなわち、第１の実施の形態において、展示物収納部９の底面の４隅の近傍から高さ方向に沿って、導光部材６である透明のアクリル製の丸棒が突出して設置されている。丸棒の表面は平滑面であり、下端はショーケース土台１１内に位置している。ショーケース土台１１の内部に光フアイバ光源装置７が設置されており、導光部材６の下端に光フアイバ出射端面を近接させて設置している。一方導光部材６の上端の上方に、導光部材６からの出射光を反射して展示物１３を照射するように光制御部材８である反射鏡が設置されている。
【００７０】
動作において、光源装置７の光フアイバ７ａの出射光が導光部材６に入射し、導光部材６中を側面から漏れることなく導光し、その上端から出射する。その上端からの出射光はその上部に設けられた反射鏡（８）で反射されて、展示物１３を効率よく照明する。したがって、導光部材６が展示物収納部９の隅に位置するので、より鑑賞を妨げない。
【００７１】
その他は、第１の実施の形態と同様である。
【００７２】
なお、光源装置７は、楕円反射鏡を備えたランプを、その集光光が導光部材６の下端に入射するように配置したものを用いても同様の効果を示す。また光制御部材８の反射鏡の表面は、その目的に応じて鏡面だけでなく拡散処理を施しても良い。また、プリズムを用いても良い。導光部材６はアクリル製でなく、屈折率の高い透明な樹脂或いはガラスであっても同様の効果を示す。
【００７３】
図６は第４の実施の形態の変形の実施の形態であり、図６（ａ）はケース１０内の隅角に近接するような透明導光部材６の断面多角形のうち、断面３角形の場合であり、図６（ｂ）は断面４角形の場合である。いずれも、展示物収納部９のケース１０の隅にフィットし、略一体化した状態となるため、より展示物の鑑賞を損ねない。
【００７４】
この発明の第５の実施の形態を図７に示す。すなわち、この照明装置は、ショーケース１０の展示物収納部９は、その天面及び側面の４面がガラスで覆われている。ショーケース１０のガラスの内側近傍の展示物収納部９の底板９ａから、透明なアクリル製の板状の導光部材６が側面のガラスに沿って貫通突出し、かつ展示物収納部９の底板９ａの近傍で９０°に折り曲げられたコーナ部６ａを有し、かつ展示物収納部９の底板９ａに沿って台１７によって底上げされた展示物１３の下方の近辺まで設置されている。コーナ部６ａの外側は底板９ａの水平面に対して４５°の傾斜平面をなし、かつ鏡面処理が施されている。
【００７５】
アクリル製導光部材６の表面は平滑であり、導光部材６の下端はショーケース土台１１の内部にあり、さらに導光部材６の下端に沿って導光部材６の下端に複数の光ファイバ７ａが設置されている。光ファイバ７ａの反対側の端部は光源装置７に接続されている。
【００７６】
導光部材６の光源側とは反対側の他端に、導光部材６からの出射光を反射して展示物１３を照射するように光制御部材８である反射鏡が設置されている。また展示物収納部９の底面上で展示物１３の下方に、展示物１３の底面の観賞用に反射鏡１５が設置されている。
【００７７】
また展示物収納部９内のアクリル製の導光部材６は、展示物収納部９の底面の導光部材６の下方に設置された複数の支持部材１６（図８参照）によって支持されており、導光部材６が展示物収納部９の底面に密接することはない。また支持部材１６の先端は先細りで小径の丸みを持った形状となっており、導光部材６との接触面積は非常に小さくなっている。従って、導光部材６の周囲の大部分は屈折率の最も小さい（＝１）空気で覆われている。
【００７８】
動作について説明する。光源装置７の蛍光灯からの出射光が直接或いは反射鏡を介してアクリル導光部材６に入射する。入射した光は導光部材６中を導光し、展示物収納部９内のコーナ部６ａの鏡面処理による反射面にて略９０度反射され、引き続き導光部材６の先端まで導光される。このとき、側面が平滑であり、かつその周囲の大部分が低屈折率（＝１）の空気で覆われているため、側面から光が漏れることは殆どない。導光部材６中を導光した光は展示物１３の下方の先端から出射し、その先に設けられた光制御用の反射鏡（８）で反射されて、展示物１３の下面を効率よく照明する。
【００７９】
なお、導光部材６の側面は完全な平滑性を有さなくても同様の効果は得られるが、より平滑であるほうが効果は大きい。また光源装置７は、楕円反射鏡を備えたランプを、その集光光が導光部材６の下端に入射するように複数配置したもの、或いはアクリル導光部材６の下端に大部分の光を照射することができる光ファイバ（例えば３Ｍ社製強力サイドライト、ブリジストン社製レイダックロッド）、或いは導光部材６の下端に沿って下端に配光制御する反射鏡を備えた蛍光灯を用いても同様の効果を示す。また導光部材６の先端部に設置された光制御用の反射鏡表面は、その目的に応じて鏡面だけでなく拡散処理を施しても良い。導光部材６はアクリル製でなく、屈折率の高い透明な樹脂或いはガラスであっても同様の効果を示す。
【００８０】
第５の実施の形態によれば、展示物１３の下面の照明が容易にでき、導光部材６は殆ど光らず、透明であるので鑑賞を妨げず、目的の場所を効果的に照明できる。
【００８１】
その他は、第１の実施の形態と共通である。
【００８２】
図８は、この発明の第５の実施の形態の変形の実施の形態であり、光制御部材８を反射鏡に代えてプリズムにしたものである。
【００８３】
この発明の第６の実施の形態を図９に示す。すなわち、この照明装置は、第４の実施の形態（図５）において、展示物収納部９の天面中央に、展示物収納部９の４隅に設置された導光部材６の夫々に対して正対するように、天面側を除く各面が位置するような４面体形状の別の光制御部材１８として反射鏡が設置されている。４面体形状反射鏡（１８）の導光部材６に正対する面は全て同一形状となっている。また導光部材上方に設置されている反射鏡は鏡面であり、かつ導光部材６の上端からの射出光を反射し、夫々が対向する４面体形状反射鏡（１８）の鏡面を照射するような角度に設置されている。
【００８４】
動作において、導光部材６の上方に設置されている反射鏡（１８）で反射された光は、展示物収納部９の天面中央に設けられた４面体形状の反射鏡（１８）で反射され、下方に位置する展示物１３を真上から照明する。
【００８５】
なお、展示物収納部９の天面中央に設置する反射鏡（１８）は上記の構成に限らず、展示物１３によって適宜変更しても良い。また展示物収納部９の天面中央に設置する反射鏡（１８）は、鏡面に限らず拡散反射鏡であっても同様の効果を示す。
【００８６】
第６の実施の形態によれば、展示物１３を真上方向から効果的に照明できる。
【００８７】
その他は、第４の実施の形態と同様である。
【００８８】
この発明の第７の実施の形態を図１０に示す。すなわち、この照明装置は、第６の実施の形態（図９）において、展示物収納部９の天面中央に設置した反射鏡（１８）の各反射面１８ａが独立して設けられ、任意の角度調節が可能であり、各導光部材６の上方の反射鏡（８）の角度に応じて変更できるように構成しているものである。
【００８９】
第７の実施の形態は、導光部材６の上方に設置されている反射鏡（８）および展示物収納部９の天面中央に設置した反射鏡（１８）の角度を調節することによって、配光制御が容易に行える。したがって、展示物１３の上方からの配光制御が精密かつ容易となる。
【００９０】
この発明の第８の実施の形態を図１１に示す。すなわち、この照明装置は、第６の実施の形態において、導光部材６および光源装置７を第１の実施の形態のように板状またはパネル状としたものであり、その上端にそれぞれ光制御部材８がある。展示物収納部９の天面中央の反射鏡（１８）は導光部材６と同数の２面の反射面１８ａで構成される。その他は、第６の実施の形態と同様である。
【００９１】
この発明の第９の実施の形態を図１２に示す。すなわち、この照明装置は、第４の実施の形態において、導光部材６の展示物収納部９を構成するガラス側の側面の任意の位置に任意の幅で内面が拡散反射面となった拡散反射部材２０が密着設置されている構造である。拡散反射部材２０としては、拡散反射率の高いテープ或いは塗料等が使用される。導光部材６にテープを貼付したり、塗料を塗布する。
【００９２】
導光部材６を導光する光の一部が、拡散反射部材２０で拡散反射され、そのうち導光部材６の臨界角以上となった光が、拡散反射部材２０の対向する導光部材６の側面付近を透過し、導光部材６の側面から出射されることにより、展示物１３を照明する。
【００９３】
この実施の形態によれば、容易に任意の高さから照明でき、かつ複数位置からの照明が容易にできる。その他は第１の実施の形態と同様である。
【００９４】
この発明の第１０の実施の形態を図１３に示す。すなわち、この照明装置は、第１の実施の形態において、板状の導光部材６の展示物収納部９を構成するガラス側の側面の任意の位置に任意の幅で内面が拡散反射面となった拡散反射部材２０が密着設置されている構造である。拡散反射部材２０としては、拡散反射率の高いテープまたは塗料等が使用される。
【００９５】
導光部材６を導光する光の一部が、拡散反射部材２０で拡散反射され、そのうち導光部材６の臨界角以上となった光が、拡散反射部材２０の対向する導光部材６の側面付近を透過し、導光部材６の側面から出射されることにより、展示物１３を照明する。
【００９６】
第１０の実施の形態によれば、さらに容易に任意の位置から照明できる。
【００９７】
この発明の第１１の実施の形態を図１４に示す。すなわち、この照明装置は、第９の実施の形態（図１２）において、拡散反射部材２０として導光部材６の展示物１３側の側面の任意の位置に任意の幅でプリズムが密着設置されている構造である。このプリズムは導光部材６と同等以上の屈折率を持つ透明材質でできている。プリズム（２０）の断面形状は上面が水平な直角三角形形状である。プリズム（２０）と導光部材６は、プリズムと同等の屈折率を持つ透明な接着剤で接合されている。
【００９８】
導光部材６とプリズム（２０）の界面は屈折率が同等であるため、光学的に略一体化された状態であり、このため導光部材を導光する光でプリズム（２０）の界面に到達した光は、そのまま導光部材６を透過してプリズム内に入射する。プリズムに入射した光は１回或いは複数回反射した後、主にプリズム下面から出射し、展示物１３を照明する。したがって、第４の実施の形態（図５）よりもさらに配光制御が容易となる。
【００９９】
なお、プリズムの材質としては屈折率が導光部材６以下でも同様の効果を示すが、屈折率が導光部材６以上のものに比べてその効果は小さい。またプリズム上面に鏡面処理を施せば、プリズム上面から漏れ光が生じるのを防ぐことができ、さらに効率よく展示物１３を照明できる。さらにプリズムの形状は、これに特定されるものではなく、照射方向に応じて変更しても同様の効果が得られる。
【０１００】
この発明の第１２の実施の形態を図１５に示す。すなわち、この照明装置は、第１の実施の形態において、第１１の実施の形態（図１４）と同様に導光部材６の展示物１３側の側面の任意の位置に拡散反射部材２０として任意の幅のプリズムが密着設置されている構造である。
【０１０１】
その他は、第１の実施の形態および第１１の実施の形態と同様である。
【０１０２】
この発明の第１３の実施の形態を図１６に示す。すなわち、この照明装置は、第１１の実施の形態（図１４）において、プリズム（２０）と同幅の透明なフッ素樹脂製の熱収縮べルト２２を導光部材６を覆うように設置し、その両端がプリズム（２０）の両側面の導光部材６側にプリズムと同材質の接着剤で接着され、これにより拡散反射部材２０を導光部材６に固定している。熱収縮ベルト２２は熱を付加されて、プリズムの１面が導光部材に密接固定される程度に収縮している。
【０１０３】
フッ素樹脂製のベルト２２は低屈折率であるため、導光部材６との接触による光漏れは殆どない。またプリズム（２０）と導光部材６は接着固定されていないため、導光部材６に沿って容易にスライドさせて任意の高さに調節でき、任意の高さから照明できる。
【０１０４】
第１３の実施の形態によれば、高さ調節が容易になる。
【０１０５】
なお、プリズムの密接固定用のべルトとしては、熱収縮材を用いる他に、通常のフッ素樹脂ベルトを締め付け調節できる治具を用いて締め付け固定しても同様の効果が得られる。
【０１０６】
この発明の第１４の実施の形態を図１７に示す。すなわち、この照明装置は、第４の実施の形態（図５）において、導光部材６の展示物１３側の側面の任意の位置に任意の幅で、多数の凹凸２７、例えば傷や切り欠きを設けたものである。
【０１０７】
導光部材６を導光してきた光の一部が凹凸２７の切り欠き部に入射すると、その大部分が凹凸面に対して臨界角以上となるため、導光部材６から出射され、展示物１３を照明する。
【０１０８】
第１４の実施の形態によれば、図１２に示す第９の実施の形態の効果がある。
【０１０９】
この発明の第１５の実施の形態を図１８に示す。すなわち、この照明装置は、第４の実施の形態（図５）において、導光部材６の一部をショーケース土台１１の内部に土台の高さの範囲で収納できるように、導光部材６を上下移動可能に底板９ａに設けている。導光部材６の下部をショーケース土台１１の内部に自在に収納することにより、展示物収納部９での導光部材６の高さを容易に調節でき、任意の高さから展示物１３を照明できる。
【０１１０】
第１５の実施の形態によれば、第４の実施の形態おいてさらに任意の高さから照明できる。その他は第４の実施の形態と同様である。
【０１１１】
この発明の第１６の実施の形態を図１９に示す。すなわち、この照明装置は、第１の実施の形態（図１）において、第１５の実施の形態と同様に導光部材６の一部をショーケース土台１１の内部に土台の高さの範囲で収納できるように、導光部材６を上下移動可能に底板９ａに設けている。また各導光部材６の下端にそれぞれ光源装置７を取付けている。その他は、第１および第１５の実施の形態と同様である。
【０１１２】
この発明の第１７の実施の形態を図２０に示す。すなわち、この照明装置は、第４の実施の形態（図５）において、導光部材６の上端の上方に設けた光制御部材８の反射鏡は導光部材６の上端付近の水平な軸３０のまわりに回転でき、反射鏡（８）を任意の角度に調節が可能となっている。反射鏡（８）の角度を調節することにより、鉛直面での任意の方向に配光制御することができ、効果的に展示物１３を照明できる。したがって、第４の実施の形態においてさらに任意方向に容易に配光制御できる。その他は、第４の実施の形態と同様である。
【０１１３】
この発明の第１８の実施の形態を図２１に示す。すなわち、この照明装置は、第１の実施の形態において、導光部材６の上端の上方に設けた光制御部材８の反射鏡は導光部材６の上端付近の水平な軸３０のまわりに回転でき、任意の角度調節が可能となっている。
【０１１４】
その他は、第１の実施の形態と同様である。
【０１１５】
この発明の第１９の実施の形態を図２２に示す。すなわち、この照明装置は、第１７の実施の形態において、導光部材６の上端上方に設けた光制御部材８の反射鏡は矢印Ｑのように軸３０のまわりの上下方向の回動とともに、導光部材６の長手方向を軸として矢印Ｐの方向に、例えば二重円筒体構造による水平回転もできる構成である。このように、反射鏡（８）の水平面での角度を調節することにより、さらに水平面での任意の方向にも配光制御することができ、効果的に展示物１３を照明できる。したがって、第１７の実施の形態においてさらに任意方向に容易に配光制御できることとなる。
【０１１６】
この発明の第２０の実施の形態を図２３に示す。すなわち、この照明装置は、第１の実施の形態において、導光部材６の上端上方に光制御部材８の反射鏡が複数設置されている。各反射鏡の下部には内面が鏡面となったコの字状のはめ込み部が設けた固定部材３２を設け、導光部材６の上端付近にはめ込んで固定できるようになっている。また反射鏡（８）は固定部材３２に対して第１９の実施の形態と同様の２軸回転が可能な構成となっている。
【０１１７】
したがって個々の反射鏡（８）は第１９の実施の形態と同様の作用を示す。また固定部３２の上部の水平方向の回転機構部の円筒部３６が長い時は、内周面３３に鏡面処理を施す、或いは内径が略一致する導光用の透明ロッドを挿入する等すれば、回転機構部での損失をある程度防ぐことができる。また固定部３２は金属板であるので、導光部材６にはめ込んだ際の導光部材６との接触面積はそれほど多くないので、接触による損失は少ない。前記損失を防止する手段としては固定部材３２の内面に先端が丸い突起を複数設けて、その突起部との接触圧で固定するようにすればよい。
【０１１８】
第２０の実施の形態によれば、図２２に示す第１９の実施の形態においてさらに個々の反射鏡を任意の方向に調節できるため、より幅広い配光制御ができる。
【０１１９】
この発明の第２１の実施の形態を図２４に示す。すなわち、この照明装置は、第１７の実施の形態（図２０）において、導光部材６の上端と反射鏡（８）の間に凸レンズ３５が設けられている。凸レンズ３５はレンズボックス３６の上端に固定されている。導光部材６とレンズボックス３６は連結パーツ３７を介して固定され、導光部材６の先端と凸レンズ３５が特定の距離をおいて固定されている。したがって、導光部材６の上端からの出射光は凸レンズ３５によってある程度絞られた配光となる。このため特定の領域を狙った照明ができる。また展示物１３への照射角は凸レンズ３５と導光部材６の出射端との距離で決まる。したがって、第１７の実施の形態においてさらに照射角を絞った配光が可能となる。
【０１２０】
この発明の第２２の実施の形態を図２５に示す。すなわち、この照明装置は、第２１の実施の形態において、レンズボックス３６と連結パーツ３７との間にスライド機構が設けられており、凸レンズ３５と導光部材６の上端の距離を任意にまたは焦点距離の範囲内で変更できるようになっている。スライド機構はレンズボックス３６を連結パーツ３７に摺動自在に嵌合し、固定ねじ４０で任意の位置に固定する。
【０１２１】
第２１の実施の形態においてさらに凸レンズ３５と導光部材６の上端の距離を変更することにより、展示物１３に応じて照射角を任意に変更できる。したがって、第２１の実施の形態においてさらに照射角を任意に変更でき、より幅広い配光制御ができる。
【０１２２】
この発明の第２３の実施の形態を図２６に示す。すなわち、この照明装置は、第１の実施の形態（図１）において、導光部材６の内側（展示物側）の任意の位置に内面が拡散反射面となった拡散反射部材４１を文字の形として密着させた構造である。
【０１２３】
第１の実施の形態において拡散反射部材４１で導光光が反射されて展示ショーケース１０の外側に向かって発光するため、構成された文字が導光部材６上で視認できるようになり、照明作用と表示作用を兼ねることができる。
【０１２４】
このため、第１の実施の形態においてさらに表示作用を兼ねることができる。図２６（ｂ）は第１８の実施の形態（図２１）の導光部材６に拡散反射部材４１を設けた例である。
【０１２５】
この発明の第２４の実施の形態を図２７に示す。すなわち、この照明装置は、第９の実施の形態（図１２）において、導光部材６を板状とし、導光部材６の外側の任意の箇所に、無数の凹凸４５、例えば傷や切り欠きで特定の文字を描いて形成したものである。
【０１２６】
第９の実施の形態と同様の作用で凹凸４５の傷や切り欠きで導光光が反射されて展示ショーケース１０の外側に向かって発光するため、構成された文字が導光部材６上で視認できるようになり、照明作用と表示作用を兼ねることができる。その他第２３の実施の形態（図２６）と同様である。
【０１２７】
なお、光制御部材８は導光部材６の一部を制御するものでもよい。また、ショーケース１０は周側面の４面および天面のうち少なくとも一部が透明であればよい。
【０１２８】
【発明の効果】
請求項１記載の照明装置によれば、導光部材は透明であるため展示物鑑賞の障害とならず、美観を損ねない。導光部材によりケース上部まで容易に導光でき、ケースの天井部が透明でも導光部材を設置できる。また光制御部材により配光制御が容易になり、さらに光源装置を鑑賞の妨げとならない位置に設置することによりメンテナンスを容易にできる。また展示物収納部での導光部材の高さを容易に調節でき、任意の高さから展示物を照明できる。
【０１２９】
請求項２記載の照明装置によれば、請求項１と同様な効果がある。
【０１３０】
請求項３記載の照明装置によれば、請求項２と同様な効果がある。
【０１３１】
請求項４記載の照明装置によれば、請求項３と同様な効果がある。
【０１３２】
請求項５記載の照明装置によれば、請求項１と同様な効果のほか、導光部材が展示物収納部の隅に位置するので、より一層鑑賞を妨げない。
【０１３３】
請求項６記載の照明装置によれば、請求項５と同様な効果のほか、展示物収納部のケースの隅にフィットし、略一体化した状態となるため、より展示物の鑑賞を損ねない。
【０１３４】
請求項７記載の照明装置によれば、導光部材は透明であるため展示物鑑賞の障害とならず、美観を損ねない。導光部材によりケース上部まで容易に導光でき、ケースの天井部が透明でも導光部材を設置できる。また光制御部材により配光制御が容易になり、さらに光源装置を鑑賞の妨げとならない位置に設置することによりメンテナンスを容易にできる。展示物の下面の照明が容易にでき、また導光部材は殆ど光らず透明であるので鑑賞を妨げず目的の場所を効果的に照明できる。
【０１３５】
請求項８記載の照明装置によれば、請求項７と同様な効果がある。
【０１３６】
請求項９記載の照明装置によれば、導光部材は透明であるため展示物鑑賞の障害とならず、美観を損ねない。導光部材によりケース上部まで容易に導光でき、ケースの天井部が透明でも導光部材を設置できる。また光制御部材により配光制御が容易になり、さらに光源装置を鑑賞の妨げとならない位置に設置することによりメンテナンスを容易にできる。また任意の方向に容易に配光制御することができる。
【０１３７】
請求項１０記載の照明装置によれば、請求項９と同様な効果がある。
【０１３８】
請求項１１記載の照明装置によれば、請求項９または請求項１０と同様な効果のほか、導光部材の長手方向である光軸方向を軸として回転可能としたため、照射角を任意に変更でき、より幅広い配光制御ができる。
【０１３９】
請求項１２記載の照明装置によれば、請求項９または請求項１０と同様な効果のほか、照射角を絞った配光ができる。
【０１４０】
請求項１３記載の照明装置によれば、請求項１２と同様な効果のほか、展示物に応じて照射角を任意に変更でき、幅広い配光制御が行なえる。
【０１４１】
請求項１４記載のショーケースによれば、請求項１から請求項１３までのいずれか１項と同様の効果がある。
【図面の簡単な説明】
【図１】この発明の第１の実施の形態の斜視図である。
【図２】それぞれ変形の実施の形態を示し、（ａ）は光制御部材を示す部分斜視図、（ｂ）〜（ｄ）はそれぞれ光源装置を示す部分斜視図である。
【図３】第２の実施の形態の斜視図である。
【図４】第３の実施の形態の斜視図である。
【図５】第４の実施の形態の斜視図である。
【図６】それぞれ形状の異なる導光部材を示す断面図である。
【図７】第５の実施の形態の要部斜視図である。
【図８】その変形の実施の形態の部分斜視図である。
【図９】第６の実施の形態の斜視図である。
【図１０】第７の実施の形態の斜視図である。
【図１１】第８の実施の形態の斜視図である。
【図１２】第９の実施の形態の斜視図である。
【図１３】第１０の実施の形態の斜視図である。
【図１４】第１１の実施の形態を示し、（ａ）は部分斜視図、（ｂ）はその側面図である。
【図１５】第１２の実施の形態の斜視図である。
【図１６】第１３の実施の形態の斜視図である。
【図１７】第１４の実施の形態の斜視図である。
【図１８】第１５の実施の形態の斜視図である。
【図１９】第１６の実施の形態の斜視図である。
【図２０】第１７の実施の形態の部分斜視図である。
【図２１】第１８の実施の形態の部分斜視図である。
【図２２】第１９の実施の形態の部分斜視図である。
【図２３】第２０の実施の形態の部分斜視図である。
【図２４】第２１の実施の形態を示し、（ａ）は要部斜視図、（ｂ）はその断面図である。
【図２５】第２２の実施の形態の要部断面図である。
【図２６】第２３の実施の形態の斜視図である。
【図２７】第２４の実施の形態の要部斜視図である。
【図２８】第１の従来例の斜視図である。
【図２９】第２の従来例の斜視図である。
【図３０】第３の従来例の斜視図である。
【図３１】第３の従来例の別の斜視図である。
【図３２】第４の従来例の斜視図である。
【符号の説明】
１前面
２背面
３側面
４側面
５上面
６導光部材
７光源装置
８光制御部材
９展示物収納部
１０ショーケース
１１ショーケース土台
１３展示物
１８光制御部材
２０拡散反射部材
２７凹凸
３５凸レンズ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an illumination device and a showcase used for illumination of an exhibition showcase.
[0002]
[Prior art]
A first conventional example is shown in FIG. That is, the interior of the showcase 202 is illuminated with a light source 201 such as a separate spotlight or downlight provided on the ceiling 200 of the building above the showcase 202 for display.
[0003]
A second conventional example is shown in FIG. That is, as a supplementary illumination in the first conventional example, the optical fiber 204 is installed from the light source device 203 installed on the case base through the metal pipe 205 installed protruding from the bottom of the case 202, and the upper end of the pipe 205 is installed. The inside of the showcase 202 is illuminated by controlling the irradiation direction with a reflecting mirror 206 provided in the display. There is also a type using a metal flexible tube instead of the metal pipe 205 and the reflecting mirror 206.
[0004]
A third conventional example is shown in FIGS. FIG. 30 shows an all-around display type, and FIG. 31 shows a single-sided display peep case. A light source storage box is provided on the ceiling 207 of the case 202 to illuminate the inside of the case 202 via the milky white panel 208.
[0005]
  A fourth conventional example is shown in FIG. The light source device 203 is installed inside the base, and the optical fiber 204 is connected to a metal pipe.205For fixing transparent members formed ofFrameIt leads to the upper part of the case 202 through the inside, and illuminates from the upper part of the case 202.
[0006]
[Problems to be solved by the invention]
However, in the first conventional example, since the showcase 202 and the light source 201 are separated, the layout change is inconvenient, the case 202 and the light source 201 need to be moved individually, and the light source 201 can be installed on the ceiling. You can only move to a place. Further, since the distance between the light source 201 and the showcase 202 is large, it is difficult to control the light distribution, and shadows and edges are likely to appear on the bottom surface of the case 202 due to reflection and refraction by the transparent member forming the showcase 202. Further, since the light source 201 is installed at a high place, maintenance is inconvenient.
[0007]
In the second conventional example, the metal pipe 205 becomes an obstacle to viewing the exhibition, and the pipe 205 cannot be extended to the upper part of the case 202.
[0008]
In the third conventional example, since the light source box is located on the case ceiling 207, maintenance is inconvenient, and infrared rays are also emitted into the case 202 at the same time. Since 207 becomes opaque, it becomes an obstacle to viewing the exhibits.
[0009]
In the fourth conventional example, the transparent member fixing frame 209 using a metal pipe is an obstacle to viewing the exhibition.
[0010]
Accordingly, an object of the present invention is to provide an illumination device and a showcase that do not become an obstacle to viewing an exhibition, can easily control light distribution, and can be easily maintained.
[0011]
[Means for Solving the Problems]
  The illuminating device according to claim 1 is an illuminating device that is installed in an exhibition showcase in which at least a part of the front surface, back surface, both side surfaces, and the upper surface of the exhibit storage unit is formed transparently, and does not interfere with viewing. An installed light source device, a transparent light guide member that guides light from the light source device to a predetermined position of the exhibit storage unit, and at least part of the light guide member irradiates the exhibit with the light guide light. A light control member for controlling the directionThe light guide member is installed on the base of the exhibition showcase so that it can be stored for an arbitrary length.Is.
[0012]
  According to the illumination device of the first aspect, since the light guide member is transparent, it does not hinder the appreciation of the exhibit and does not impair the beauty. The light guide member can easily guide light to the upper part of the case, and the light guide member can be installed even if the ceiling of the case is transparent. In addition, light distribution control is facilitated by the light control member, and maintenance can be facilitated by installing the light source device at a position that does not hinder viewing.Moreover, the height of the light guide member in the exhibit storage section can be easily adjusted, and the exhibit can be illuminated from an arbitrary height.
[0013]
  The illuminating device according to claim 2 is an illuminating device that is installed in an exhibition showcase in which at least a part of the front surface, the back surface, both side surfaces, and the upper surface of the exhibit storage unit is formed transparently, and is displayed from an arbitrary position on the bottom surface. A transparent light guide member installed inside the case, a light control member for controlling the light guide light of at least a part of the light guide member to irradiate the exhibit, and light from the lower end of the light guide member A light source device to be introducedThe light guide member is installed on the base of the exhibition showcase so that it can be stored for an arbitrary length.Is.
[0014]
According to the illumination device of the second aspect, the same effect as that of the first aspect is obtained.
[0015]
A lighting device according to a third aspect is the lighting device according to the second aspect, wherein the light guide member has a plate shape.
[0016]
According to the illumination device of the third aspect, the same effect as the second aspect is obtained.
[0017]
According to a fourth aspect of the present invention, in the third aspect, the plate-like light guide member is provided substantially along the inner surface of the exhibition showcase.
[0018]
According to the illumination device of the fourth aspect, the same effect as the third aspect is obtained.
[0019]
  The lighting device according to claim 5 is:A lighting device installed in an exhibition showcase in which at least a part of a front surface, a back surface, both side surfaces, and an upper surface of an exhibit storage unit is transparently formed, and extending from at least one corner of the bottom surface in a height direction of the exhibition showcase A transparent rod-shaped light guide member installed in the vicinity of the corner of the exhibition showcase, and a light control member for controlling the light guide light of at least a part of the light guide member in the direction of irradiating the exhibit And a light source device that introduces light from the lower end of the light guide member, and the light guide member is installed on the base of the exhibition showcase so that it can be stored for an arbitrary length.Is.
[0020]
  According to the lighting device of claim 5, in addition to the same effect as in claim 1,Since the light guide member is located in the corner of the exhibition storage unit, the viewing is not further hindered.
[0021]
  The lighting device according to claim 6 is:In Claim 5, the cross-sectional shape of a light guide member is a polygon shape which adjoins the corner | angular in a case.
[0022]
  According to the lighting device of claim 6,In addition to the same effect as that of the fifth aspect of the present invention, it fits into the corner of the case of the exhibit storage unit and becomes a substantially integrated state, so that the appreciation of the exhibit is not further impaired.
[0023]
  The lighting device according to claim 7 is provided.An illumination device installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparent, and installed at a position that does not hinder viewing, and the light source device A transparent light guide member that guides the light to a predetermined position of the exhibit storage unit, and a light control member that controls at least a portion of the light guide member in the direction of irradiating the exhibit with the light guide light One end of the light guide member that is an incident end of light from the light source device is in a base of the exhibition showcase, and the light guide member has a structure bent approximately 90 degrees in the exhibit storage unit, And the outside of the bent part of the light guide member is a flat surface subjected to a mirror treatment of 45 degrees, and the surface of the light guide member is smooth.Is.
[0024]
  According to the lighting device of claim 7,Since the light guide member is transparent, it does not hinder the appreciation of the exhibits and does not impair the beauty. The light guide member can easily guide light to the upper part of the case, and the light guide member can be installed even if the ceiling of the case is transparent. In addition, light distribution control is facilitated by the light control member, and maintenance can be facilitated by installing the light source device at a position that does not hinder viewing. Illumination of the lower surface of the exhibit can be facilitated, and the light guide member is transparent and hardly shines, so that it is possible to effectively illuminate the target place without disturbing viewing.
[0025]
  The lighting device according to claim 8 is:A lighting device that is installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparent, and is a transparent device installed inside the showcase from an arbitrary position on the bottom. A light guide member, a light control member that controls the direction of irradiating at least a part of the light guide light of the light guide member, and a light source device that introduces light from a lower end of the light guide member, The lower end of the light guide member that is an incident end of light from a light source device is in the base of the exhibition showcase, the light guide member has a structure bent approximately 90 degrees in the exhibit storage unit, and The outside of the bent portion of the light guide member is a flat surface subjected to a mirror treatment of 45 degrees, and the surface of the light guide member is smooth.Is.
[0026]
  According to the lighting device of claim 8,There exists an effect similar to Claim 7.
[0027]
  The lighting device according to claim 9 is:An illumination device installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparently, and the light source device installed in a position that does not hinder viewing, and the light source device A transparent light guide member that guides the light to a predetermined position of the exhibit storage unit, and a light control member that controls at least a portion of the light guide member in the direction of irradiating the exhibit with the light guide light The light control member is provided with a reflecting mirror that is rotatable in the longitudinal direction of the light guide member above the upper end of the light guide member..
[0028]
  According to the lighting device of claim 9,Since the light guide member is transparent, it does not hinder the appreciation of the exhibits and does not impair the beauty. The light guide member can easily guide light to the upper part of the case, and the light guide member can be installed even if the ceiling of the case is transparent. In addition, light distribution control is facilitated by the light control member, and maintenance can be facilitated by installing the light source device at a position that does not hinder viewing. In addition, light distribution can be easily controlled in any direction.
[0029]
  The lighting device according to claim 10 is provided.A lighting device that is installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparent, and is a transparent device installed inside the showcase from an arbitrary position on the bottom. A light guide member, a light control member that controls the direction of irradiating at least a part of the light guide light of the light guide member, and a light source device that introduces light from a lower end of the light guide member, The light control memberA reflecting mirror that is rotatable in the longitudinal direction of the light guide member is provided above the upper end of the light guide member.Is.
[0030]
  According to the lighting device of claim 10,There exists an effect similar to Claim 9.
[0031]
  An illumination device according to claim 11 is provided.11. The reflection mirror according to claim 9, wherein the reflecting mirror is rotatable about the optical axis direction of the light guide member.Is.
[0032]
  According to the lighting device of claim 11,In addition to the effects similar to those of the ninth aspect and the tenth aspect, since the optical axis direction which is the longitudinal direction of the light guide member can be rotated, the irradiation angle can be arbitrarily changed and wider light distribution control can be performed.
[0033]
  The lighting device according to claim 12 is provided.In Claim 9 or Claim 10, the convex lens is installed in the upper end part of the said light guide member.
[0034]
  According to the lighting device of claim 12,In addition to the same effects as those of the ninth or tenth aspect, light distribution with a narrowed irradiation angle can be achieved.
[0035]
  The lighting device according to claim 13 is provided.In Claim 12, the distance of the upper end of the said convex lens and the said light guide member can be changed to the optical axis direction of the said light guide member within the range of the focal distance of the said convex lens.
[0036]
  According to the lighting device of claim 13,In addition to the same effect as that of the twelfth aspect, the irradiation angle can be arbitrarily changed according to the exhibit and a wide range of light distribution control can be performed.
[0037]
  The showcase according to claim 14 is:A lighting device according to any one of claims 1 to 13 is provided.
[0038]
  According to the showcase of claim 14,There exists an effect similar to any one of Claim 1 to 13.
[0051]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIG. In other words, the showcase 10 having this lighting device is an exhibition showcase in which the front surface 1, the back surface 2, the four side surfaces 3, 4 and the top surface 5 of the exhibit storage unit 9 are formed of a transparent member such as glass.
[0052]
The showcase lighting device includes a light guide member 6, a light source device 7, and a light control member 8.
[0053]
The light guide member 6 is a transparent body that guides light from the light source device 7 to a predetermined position of the exhibit storage unit 9. In the embodiment, it is a transparent acrylic plate-like surface that is smooth and transparent when viewed from the outside. The bottom surface of the exhibit storage unit 9 is located near the inside of the pair of glasses on both side surfaces 3 and 4 of the showcase 10. Is projected along the glass (3, 4). The lower end of the light guide member 6 is inside the showcase base 11. Most of the periphery of the light guide member 6 is covered with air having the smallest refractive index (= 1).
[0054]
The light source device 7 is installed at a position that does not hinder viewing. In the embodiment, a fluorescent lamp that is provided inside the showcase base 11 and includes a reflecting mirror that controls light distribution is installed at the lower end of the light guide member 6 along the lower end of the light guide member 6.
[0055]
The light control member 8 controls the direction of irradiating the exhibit 13 with at least part of the light guide light of the light guide member 6. In the embodiment, a reflecting mirror is installed above the upper end of the light guide member 6 so as to reflect the emitted light from the light guide member 6 and irradiate the exhibit 13.
[0056]
Light emitted from the fluorescent lamp (7) enters the light guide member 6 directly or via a reflecting mirror. Incident light is guided through the light guide member 6, but the side surface is smooth and most of the surrounding area is covered with air having a low refractive index (= 1), so that light leaks from the side surface. There is almost no. The light guided through the light guide member 6 is emitted from the upper end and is reflected by the reflecting mirror (8) provided on the upper part to efficiently illuminate the exhibit 13.
[0057]
In addition, although the same effect is acquired even if the side surface of the light guide member 6 does not have perfect smoothness, the effect is larger when smoother. Further, even if the light guide member 6 is not made of acrylic and is made of a transparent resin or glass having a high refractive index, the same effect is exhibited. Further, the surface of the reflecting mirror which is the light control member 9 may be subjected not only to a mirror surface but also to a diffusion treatment according to the purpose.
[0058]
According to this embodiment, since the light guide member 6 is transparent, it has transparency even when it is turned on as well as when it is turned off, so that it does not hinder the appreciation of the exhibit 13. Therefore, the beauty is not impaired. The light guide member 6 can easily guide light to the upper part of the case 10. The upper surface 5 which is the ceiling part of the case 10 can be installed even with a transparent member. Since the light source device 7 is installed on the showcase base 11 that can be easily reached, maintenance such as lamp replacement is easy. If the light guide member 6 is stored in the base 11 by an arbitrary length, the height can be easily adjusted. Since illumination can be performed inside the case 10, there is no occurrence of shadows and edges on the bottom surface of the case due to reflection and refraction of a transparent member such as glass of the case 10. Moreover, since the showcase 10 can be illuminated alone, the layout can be easily changed and the installation location can be freely set. Moreover, since ultraviolet rays and infrared rays are absorbed by the light guide member 6, the irradiated light does not damage the exhibit 13. Since the light source device 7 is on the base 11 of the showcase 10, the color of the irradiation light can be easily changed. If the side surface of the light guide member 6 is smooth, light leakage from the side surface does not occur. Therefore, even when the light guide member 6 is lit, the side surface of the light guide member 6 has almost no luminance, and the viewing of the exhibit 13 is not hindered.
[0059]
A modified embodiment of the first embodiment is shown in FIG. That is, FIG. 2A uses a prism as the light control member 6. In FIG. 2B, as the light source device 7, a plurality of terminal light emitting optical fibers 7 a are installed along the lower end of the light guide member 6. In FIG. 2C, a plurality of lamps 7 b each having an elliptical reflecting mirror as the light source device 7 are arranged so that the condensed light enters the lower end of the light guide member 6. FIG. 2D uses an optical fiber that irradiates most of the light to the lower end of the light guide member 6 (for example, a strong sidelight manufactured by 3M, a Raidak rod manufactured by Bridgestone).
[0060]
Each of these embodiments also exhibits the same effect as the first embodiment.
[0061]
A second embodiment of the present invention is shown in FIG. In other words, this lighting device is applied to a peep case where the show case 10 is viewed by the viewer from above the case 10. In the exhibit storage section 9 of the showcase 10, the rear side surface facing the viewing side is covered with an opaque plate member 15, and the other side surface and upper surface are covered with a transparent glass plate. A transparent acrylic plate-like light guide member 6 having a smooth surface is provided so as to protrude upward along the opaque member 15 from the bottom surface near the inside of the opaque member 15 of the exhibit storage unit 9. The lower end of the light guide member 6 is inside the showcase base 11.
[0062]
The light source device 7 is installed inside the showcase base 11, and a fluorescent lamp provided with a reflecting mirror that controls light distribution is installed at the lower end of the light guide member 6 along the lower end of the light guide member 6.
[0063]
The light control member 8 is provided with a prism above the upper end of the light guide member 6 so as to reflect the emitted light from the light guide member 6 and irradiate the exhibit 13.
[0064]
The second embodiment has the same effect as the first embodiment, and further, since the box of the light source device 7 is not in the exhibit storage unit 9, the top surface is also completely transparent with glass or the like. This allows you to expand your viewing area. Since the light source device 7 is located inside the base 11, maintenance is easy, and the display environment (temperature, humidity, etc.) is not impaired during maintenance.
[0065]
A third embodiment of the present invention is shown in FIG. That is, in this lighting device, a pair of opposing glasses constituting the showcase 10 also serves as the light guide member 6 in the first embodiment. The light control member 8 is a prism that protrudes to the inside of the exhibit storage unit 9 at the upper end of the light guide member 6. The upper surface of the prism is mirror-finished.
[0066]
In operation, the light guided through the glass as the light guide member 6 is spread and irradiated into the light control member 8 provided at the upper end, and is reflected once or a plurality of times on the mirror surface and the prism lower surface of the prism upper surface. Thereafter, the exhibit 13 is illuminated by being irradiated from the lower surface of the prism.
[0067]
Since the transparent member constituting the showcase 10 also serves as the light guide member 6, the cost is reduced, and there are no useless parts in the exhibit storage unit 9, and the viewing is not hindered.
[0068]
Others are the same as in the first embodiment.
[0069]
A fourth embodiment of the present invention is shown in FIG. In other words, in the first embodiment, a transparent acrylic round bar as the light guide member 6 is provided so as to protrude from the vicinity of the four corners of the bottom surface of the exhibit storage unit 9 along the height direction. . The surface of the round bar is a smooth surface, and the lower end is located in the showcase base 11. An optical fiber light source device 7 is installed inside the showcase base 11, and the optical fiber emitting end face is installed close to the lower end of the light guide member 6. On the other hand, above the upper end of the light guide member 6, a reflecting mirror as the light control member 8 is installed so as to reflect the emitted light from the light guide member 6 and irradiate the exhibit 13.
[0070]
In operation, light emitted from the optical fiber 7a of the light source device 7 is incident on the light guide member 6, guided through the light guide member 6 without leaking from the side surface, and emitted from the upper end thereof. The outgoing light from the upper end is reflected by the reflecting mirror (8) provided on the upper part, and illuminates the exhibit 13 efficiently. Therefore, since the light guide member 6 is positioned at the corner of the exhibit storage unit 9, the viewing is not hindered.
[0071]
Others are the same as those in the first embodiment.
[0072]
The light source device 7 exhibits the same effect even when a lamp provided with an elliptical reflecting mirror is used so that the condensed light is incident on the lower end of the light guide member 6. Further, the surface of the reflecting mirror of the light control member 8 may be subjected not only to a mirror surface but also to a diffusion treatment depending on the purpose. A prism may be used. Even if the light guide member 6 is not made of acrylic and is made of a transparent resin or glass having a high refractive index, the same effect is exhibited.
[0073]
FIG. 6 shows a modification of the fourth embodiment. FIG. 6A shows a triangular cross section among the polygonal cross sections of the transparent light guide member 6 that are close to the corners in the case 10. FIG. 6B shows a case of a quadrangular cross section. All fit in the corners of the case 10 of the exhibit storage unit 9 and are in a substantially integrated state.
[0074]
A fifth embodiment of the present invention is shown in FIG. In other words, in the lighting device, the display storage portion 9 of the showcase 10 is covered with glass on the top surface and the four side surfaces. A transparent acrylic plate-like light guide member 6 projects through the side glass from the bottom plate 9a of the exhibit storage unit 9 near the inside of the glass of the showcase 10, and the bottom plate 9a of the exhibit storage unit 9 The corner portion 6a is bent at 90 ° in the vicinity, and is installed along the bottom plate 9a of the exhibit storage portion 9 up to the lower vicinity of the exhibit 13 raised by the platform 17. The outside of the corner portion 6a forms an inclined plane of 45 ° with respect to the horizontal plane of the bottom plate 9a, and is subjected to mirror surface treatment.
[0075]
The surface of the acrylic light guide member 6 is smooth, the lower end of the light guide member 6 is inside the showcase base 11, and a plurality of optical fibers are provided at the lower end of the light guide member 6 along the lower end of the light guide member 6. 7a is installed. The opposite end of the optical fiber 7 a is connected to the light source device 7.
[0076]
At the other end of the light guide member 6 opposite to the light source side, a reflecting mirror that is the light control member 8 is installed so as to reflect the emitted light from the light guide member 6 and irradiate the exhibit 13. In addition, a reflecting mirror 15 is installed on the bottom surface of the exhibit storage unit 9 below the exhibit 13 for viewing the bottom surface of the exhibit 13.
[0077]
  The acrylic light guide member 6 in the exhibit storage unit 9 includes a plurality of support members 16 installed below the light guide member 6 on the bottom surface of the exhibit storage unit 9.(See Figure 8)The light guide member 6 does not come into close contact with the bottom surface of the exhibit storage unit 9. Further, the tip of the support member 16 is tapered and has a small-diameter round shape, and the contact area with the light guide member 6 is very small. Therefore, most of the periphery of the light guide member 6 is covered with air having the smallest refractive index (= 1).
[0078]
The operation will be described. Light emitted from the fluorescent lamp of the light source device 7 enters the acrylic light guide member 6 directly or via a reflecting mirror. The incident light is guided through the light guide member 6, reflected by the reflection surface of the corner portion 6 a in the exhibit storage portion 9 by the mirror treatment, and then guided to the tip of the light guide member 6. . At this time, since the side surface is smooth and most of the surrounding area is covered with air having a low refractive index (= 1), light hardly leaks from the side surface. The light guided through the light guide member 6 is emitted from the lower end of the exhibit 13 and is reflected by the light control reflecting mirror (8) provided at the tip of the light guide member 6 so that the lower surface of the exhibit 13 can be efficiently seen. Illuminate.
[0079]
In addition, although the same effect is acquired even if the side surface of the light guide member 6 does not have perfect smoothness, the effect is larger when smoother. The light source device 7 includes a plurality of lamps provided with elliptical reflecting mirrors so that the condensed light is incident on the lower end of the light guide member 6, or most of the light is applied to the lower end of the acrylic light guide member 6. Even if an optical fiber that can be irradiated (for example, a 3M strong sidelight, a Bridgestone made Leidac rod) or a fluorescent lamp provided with a reflecting mirror that controls light distribution along the lower end of the light guide member 6 is used. The same effect is shown. Further, the light control reflecting mirror surface installed at the tip of the light guide member 6 may be subjected not only to the mirror surface but also to diffusion treatment depending on the purpose. Even if the light guide member 6 is not made of acrylic and is made of a transparent resin or glass having a high refractive index, the same effect is exhibited.
[0080]
According to the fifth embodiment, it is possible to easily illuminate the lower surface of the exhibit 13, and the light guide member 6 hardly shines and is transparent.
[0081]
Others are common to the first embodiment.
[0082]
FIG. 8 shows a modification of the fifth embodiment of the present invention, in which the light control member 8 is replaced with a reflecting mirror.
[0083]
A sixth embodiment of the present invention is shown in FIG. That is, in the fourth embodiment (FIG. 5), this lighting device is provided for each of the light guide members 6 installed at the four corners of the exhibit storage unit 9 in the center of the top surface of the exhibit storage unit 9. In order to face each other, a reflecting mirror is provided as another light control member 18 having a tetrahedral shape in which each surface except the top surface side is located. All surfaces of the tetrahedral reflector (18) that face the light guide member 6 have the same shape. The reflecting mirror installed above the light guide member is a mirror surface, reflects the light emitted from the upper end of the light guide member 6, and irradiates the mirror surface of the tetrahedral reflector (18) facing each other. It is installed at a certain angle.
[0084]
In operation, the light reflected by the reflecting mirror (18) installed above the light guide member 6 is reflected by the tetrahedral reflecting mirror (18) provided at the center of the top surface of the exhibit storage unit 9. The display 13 located below is illuminated from directly above.
[0085]
In addition, the reflecting mirror (18) installed in the center of the top surface of the exhibit storage unit 9 is not limited to the above configuration, and may be appropriately changed depending on the exhibit 13. Further, the reflecting mirror (18) installed in the center of the top surface of the exhibit storage unit 9 is not limited to the mirror surface, and the same effect is exhibited even if it is a diffuse reflecting mirror.
[0086]
According to the sixth embodiment, the exhibit 13 can be effectively illuminated from directly above.
[0087]
Others are the same as in the fourth embodiment.
[0088]
A seventh embodiment of the present invention is shown in FIG. That is, in this lighting device, in the sixth embodiment (FIG. 9), each reflecting surface 18a of the reflecting mirror (18) installed at the center of the top surface of the exhibit storage unit 9 is provided independently, The angle can be adjusted, and the angle can be changed according to the angle of the reflecting mirror (8) above each light guide member 6.
[0089]
In the seventh embodiment, by adjusting the angles of the reflecting mirror (8) installed above the light guide member 6 and the reflecting mirror (18) installed at the center of the top surface of the exhibit storage section 9, Light distribution can be easily controlled. Therefore, the light distribution control from above the exhibit 13 becomes precise and easy.
[0090]
An eighth embodiment of the invention is shown in FIG. That is, this illumination device is such that, in the sixth embodiment, the light guide member 6 and the light source device 7 are formed in a plate shape or a panel shape as in the first embodiment, and light control is performed at the upper end thereof. There is a member 8. The reflecting mirror (18) at the center of the top surface of the exhibit storage unit 9 is composed of the same number of reflecting surfaces 18 a as the light guide members 6. Others are the same as in the sixth embodiment.
[0091]
A ninth embodiment of the invention is shown in FIG. That is, in the fourth embodiment, this lighting device is a diffuser whose inner surface is a diffuse reflection surface with an arbitrary width at an arbitrary position on the side surface of the light guide member 6 on the glass side that constitutes the exhibit storage portion 9. In this structure, the reflecting member 20 is closely attached. As the diffuse reflection member 20, a tape or a paint having a high diffuse reflectance is used. A tape is applied to the light guide member 6 or a paint is applied.
[0092]
A part of the light guided through the light guide member 6 is diffusely reflected by the diffuse reflection member 20, and the light that exceeds the critical angle of the light guide member 6 of the light guide member 6 facing the diffuse reflection member 20. The exhibit 13 is illuminated by being transmitted near the side surface and emitted from the side surface of the light guide member 6.
[0093]
According to this embodiment, it is possible to easily illuminate from an arbitrary height and to easily illuminate from a plurality of positions. Others are the same as in the first embodiment.
[0094]
A tenth embodiment of the invention is shown in FIG. That is, in the first embodiment, the lighting device has an inner surface with an arbitrary width and an arbitrary diffused reflection surface at an arbitrary position on the side surface on the glass side that constitutes the exhibit storage portion 9 of the plate-shaped light guide member 6. This is a structure in which the diffuse reflection member 20 thus formed is closely attached. As the diffuse reflection member 20, a tape or a paint having a high diffuse reflectance is used.
[0095]
A part of the light guided through the light guide member 6 is diffusely reflected by the diffuse reflection member 20, and the light that exceeds the critical angle of the light guide member 6 of the light guide member 6 facing the diffuse reflection member 20. The exhibit 13 is illuminated by being transmitted near the side surface and emitted from the side surface of the light guide member 6.
[0096]
According to the tenth embodiment, it is possible to more easily illuminate from an arbitrary position.
[0097]
An eleventh embodiment of the invention is shown in FIG. That is, in this illuminating device, in the ninth embodiment (FIG. 12), a prism with an arbitrary width is closely attached to an arbitrary position on the side surface of the light guide member 6 on the exhibit 13 side as the diffuse reflection member 20. It is a structure. This prism is made of a transparent material having a refractive index equal to or higher than that of the light guide member 6. The cross-sectional shape of the prism (20) is a right triangle shape whose top surface is horizontal. The prism (20) and the light guide member 6 are joined with a transparent adhesive having a refractive index equivalent to that of the prism.
[0098]
Since the refractive index of the interface between the light guide member 6 and the prism (20) is equal, the optically substantially integrated state is obtained. For this reason, the light that guides the light guide member enters the interface of the prism (20). The reached light passes through the light guide member 6 as it is and enters the prism. The light incident on the prism is reflected once or a plurality of times and then emitted mainly from the lower surface of the prism to illuminate the exhibit 13. Therefore, light distribution control is further facilitated than in the fourth embodiment (FIG. 5).
[0099]
In addition, although the same effect is exhibited even when the refractive index is less than or equal to the light guide member 6 as the material of the prism, the effect is smaller than that of the prism having a refractive index equal to or greater than the light guide member 6. Further, if mirror treatment is applied to the upper surface of the prism, leakage light can be prevented from being generated from the upper surface of the prism, and the exhibit 13 can be illuminated more efficiently. Further, the shape of the prism is not limited to this, and the same effect can be obtained even if it is changed according to the irradiation direction.
[0100]
A twelfth embodiment of the present invention is shown in FIG. That is, in the first embodiment, the illuminating device is arbitrarily provided as a diffuse reflection member 20 at an arbitrary position on the side surface on the exhibit 13 side of the light guide member 6 as in the eleventh embodiment (FIG. 14). It is a structure in which prisms of a width of are closely installed.
[0101]
Others are the same as those in the first embodiment and the eleventh embodiment.
[0102]
A thirteenth embodiment of the invention is shown in FIG. That is, in the eleventh embodiment (FIG. 14), this illumination device is provided with a heat-shrinkable belt 22 made of transparent fluororesin having the same width as the prism (20) so as to cover the light guide member 6. Both ends thereof are bonded to the light guide member 6 side on both sides of the prism (20) with an adhesive made of the same material as the prism, thereby fixing the diffuse reflection member 20 to the light guide member 6. The heat-shrink belt 22 is heated and shrunk to such an extent that one surface of the prism is closely fixed to the light guide member.
[0103]
Since the fluororesin belt 22 has a low refractive index, there is almost no light leakage due to contact with the light guide member 6. Moreover, since the prism (20) and the light guide member 6 are not bonded and fixed, they can be easily slid along the light guide member 6 to be adjusted to an arbitrary height, and can be illuminated from an arbitrary height.
[0104]
According to the thirteenth embodiment, height adjustment is facilitated.
[0105]
In addition to using a heat-shrinkable material as the belt for closely fixing the prism, the same effect can be obtained by tightening and fixing using a jig that can tighten and adjust a normal fluororesin belt.
[0106]
A fourteenth embodiment of the present invention is shown in FIG. That is, in the fourth embodiment (FIG. 5), this lighting device has a large number of irregularities 27, for example, scratches and notches, at an arbitrary width at an arbitrary position on the side surface of the light guide member 6 on the exhibit 13 side. Is provided.
[0107]
When a part of the light guided through the light guide member 6 is incident on the cutout portion of the uneven surface 27, most of the light is more than the critical angle with respect to the uneven surface. Illuminate 13.
[0108]
According to the fourteenth embodiment, there is an effect of the ninth embodiment shown in FIG.
[0109]
A fifteenth embodiment of the invention is shown in FIG. In other words, in the fourth embodiment (FIG. 5), this lighting device is configured so that a part of the light guide member 6 can be accommodated in the showcase base 11 within the range of the height of the base. Is provided on the bottom plate 9a so as to be movable up and down. By freely storing the lower part of the light guide member 6 in the showcase base 11, the height of the light guide member 6 in the exhibit storage unit 9 can be easily adjusted, and the exhibit 13 can be moved from an arbitrary height. Can be illuminated.
[0110]
According to the fifteenth embodiment, illumination can be performed from an arbitrary height in the fourth embodiment. Others are the same as in the fourth embodiment.
[0111]
A sixteenth embodiment of the present invention is shown in FIG. That is, in this lighting device, in the first embodiment (FIG. 1), as in the fifteenth embodiment, a part of the light guide member 6 is placed inside the showcase base 11 within the range of the height of the base. The light guide member 6 is provided on the bottom plate 9a so as to be movable up and down so that it can be stored. A light source device 7 is attached to the lower end of each light guide member 6. Others are the same as those of the first and fifteenth embodiments.
[0112]
A seventeenth embodiment of the invention is shown in FIG. That is, in this illumination device, in the fourth embodiment (FIG. 5), the reflecting mirror of the light control member 8 provided above the upper end of the light guide member 6 is a horizontal shaft 30 near the upper end of the light guide member 6. And the reflecting mirror (8) can be adjusted to an arbitrary angle. By adjusting the angle of the reflecting mirror (8), the light distribution can be controlled in an arbitrary direction on the vertical plane, and the exhibit 13 can be effectively illuminated. Therefore, the light distribution can be easily controlled in an arbitrary direction in the fourth embodiment. Others are the same as in the fourth embodiment.
[0113]
An eighteenth embodiment of the invention is shown in FIG. That is, in this lighting device, in the first embodiment, the reflecting mirror of the light control member 8 provided above the upper end of the light guide member 6 rotates around a horizontal axis 30 near the upper end of the light guide member 6. The angle can be adjusted arbitrarily.
[0114]
Others are the same as those in the first embodiment.
[0115]
A nineteenth embodiment of the present invention is shown in FIG. That is, in this illuminating device, in the seventeenth embodiment, the reflecting mirror of the light control member 8 provided above the upper end of the light guide member 6 is rotated in the vertical direction around the shaft 30 as indicated by the arrow Q. For example, the light guide member 6 can be rotated horizontally in the direction of the arrow P about the longitudinal direction of the light guide member 6 by, for example, a double cylindrical structure. In this way, by adjusting the angle of the reflecting mirror (8) on the horizontal plane, the light distribution can be further controlled in an arbitrary direction on the horizontal plane, and the exhibit 13 can be effectively illuminated. Therefore, the light distribution can be easily controlled in an arbitrary direction in the seventeenth embodiment.
[0116]
A twentieth embodiment of the present invention is shown in FIG. That is, in this lighting device, a plurality of reflecting mirrors of the light control member 8 are installed above the upper end of the light guide member 6 in the first embodiment. A fixing member 32 having a U-shaped fitting portion whose inner surface is a mirror surface is provided at the lower part of each reflecting mirror, and can be fitted and fixed near the upper end of the light guide member 6. The reflecting mirror (8) is configured to be able to rotate biaxially with respect to the fixed member 32 as in the nineteenth embodiment.
[0117]
Therefore, each reflecting mirror (8) exhibits the same operation as that in the nineteenth embodiment. Further, when the cylindrical portion 36 of the horizontal rotation mechanism portion on the upper portion of the fixed portion 32 is long, the inner peripheral surface 33 may be mirror-finished, or a light guide transparent rod having substantially the same inner diameter may be inserted. The loss in the rotation mechanism can be prevented to some extent. Moreover, since the fixing | fixed part 32 is a metal plate, since the contact area with the light guide member 6 when it fits in the light guide member 6 is not so large, the loss by contact is small. As a means for preventing the loss, a plurality of protrusions with rounded tips may be provided on the inner surface of the fixing member 32 and fixed by contact pressure with the protrusions.
[0118]
According to the twentieth embodiment, in the nineteenth embodiment shown in FIG. 22, the individual reflecting mirrors can be further adjusted in an arbitrary direction, so that wider light distribution control can be performed.
[0119]
A twenty-first embodiment of the present invention is shown in FIG. That is, in this illuminating device, the convex lens 35 is provided between the upper end of the light guide member 6 and the reflecting mirror (8) in the seventeenth embodiment (FIG. 20). The convex lens 35 is fixed to the upper end of the lens box 36. The light guide member 6 and the lens box 36 are fixed via a connecting part 37, and the tip of the light guide member 6 and the convex lens 35 are fixed at a specific distance. Therefore, the light emitted from the upper end of the light guide member 6 has a light distribution that is narrowed to some extent by the convex lens 35. For this reason, the illumination which aimed at the specific area | region can be performed. Further, the irradiation angle to the exhibit 13 is determined by the distance between the convex lens 35 and the exit end of the light guide member 6. Therefore, light distribution with a further reduced irradiation angle is possible in the seventeenth embodiment.
[0120]
A twenty-second embodiment of the present invention is shown in FIG. That is, in the illuminating device, in the twenty-first embodiment, a slide mechanism is provided between the lens box 36 and the connecting part 37, and the distance between the convex lens 35 and the upper end of the light guide member 6 can be set arbitrarily or in focus. It can be changed within the range of distance. The slide mechanism slidably fits the lens box 36 to the connecting part 37 and is fixed at an arbitrary position with a fixing screw 40.
[0121]
In the twenty-first embodiment, the irradiation angle can be arbitrarily changed according to the exhibit 13 by changing the distance between the convex lens 35 and the upper end of the light guide member 6. Therefore, in the twenty-first embodiment, the irradiation angle can be arbitrarily changed, and wider light distribution control can be performed.
[0122]
A twenty-third embodiment of the present invention is shown in FIG. In other words, in this first embodiment (FIG. 1), the illuminating device uses the diffuse reflection member 41 whose inner surface is a diffuse reflection surface at any position inside the light guide member 6 (exhibit side). The structure is in close contact as a shape.
[0123]
In the first embodiment, since the light guide light is reflected by the diffusive reflection member 41 and emits light toward the outside of the exhibition showcase 10, the configured characters can be visually recognized on the light guide member 6. It can serve both as an action and a display action.
[0124]
For this reason, in the first embodiment, it can also serve as a display function. FIG. 26B is an example in which a diffuse reflection member 41 is provided on the light guide member 6 of the eighteenth embodiment (FIG. 21).
[0125]
A twenty-fourth embodiment of the present invention is shown in FIG. That is, in the ninth embodiment (FIG. 12), this lighting device has a light guide member 6 in a plate shape, and an infinite number of irregularities 45 such as scratches and cutouts are formed at arbitrary locations outside the light guide member 6. It is formed by drawing specific characters.
[0126]
Since the light guide light is reflected by the scratches and cutouts of the concave and convex portions 45 and emits light toward the outside of the display case 10 by the same operation as that of the ninth embodiment, the configured characters are displayed on the light guide member 6. It can be visually recognized, and can also serve as a lighting action and a display action. Others are the same as the twenty-third embodiment (FIG. 26).
[0127]
The light control member 8 may control a part of the light guide member 6. Moreover, the showcase 10 should just be transparent at least one part among 4 surfaces of a peripheral side surface, and a top surface.
[0128]
【The invention's effect】
  According to the illumination device of the first aspect, since the light guide member is transparent, it does not hinder the appreciation of the exhibit and does not impair the beauty. The light guide member can easily guide light to the upper part of the case, and the light guide member can be installed even if the ceiling of the case is transparent. In addition, light distribution control is facilitated by the light control member, and maintenance can be facilitated by installing the light source device at a position that does not hinder viewing.Moreover, the height of the light guide member in the exhibit storage section can be easily adjusted, and the exhibit can be illuminated from an arbitrary height.
[0129]
According to the illumination device of the second aspect, the same effect as that of the first aspect is obtained.
[0130]
According to the illumination device of the third aspect, the same effect as the second aspect is obtained.
[0131]
According to the illumination device of the fourth aspect, the same effect as the third aspect is obtained.
[0132]
  According to the lighting device of claim 5, in addition to the same effect as in claim 1,Since the light guide member is located in the corner of the exhibition storage unit, the viewing is not further hindered.
[0133]
  According to the lighting device of claim 6,In addition to the same effect as that of the fifth aspect of the present invention, it fits into the corner of the case of the exhibit storage unit and becomes a substantially integrated state, so that the appreciation of the exhibit is not further impaired.
[0134]
  According to the lighting device of claim 7,Since the light guide member is transparent, it does not hinder the appreciation of the exhibits and does not impair the beauty. The light guide member can easily guide light to the upper part of the case, and the light guide member can be installed even if the ceiling of the case is transparent. In addition, light distribution control is facilitated by the light control member, and maintenance can be facilitated by installing the light source device at a position that does not hinder viewing. Illumination of the lower surface of the exhibit can be facilitated, and the light guide member is transparent and hardly shines, so that it is possible to effectively illuminate the target place without disturbing viewing.
[0135]
  According to the lighting device of claim 8,There exists an effect similar to Claim 7.
[0136]
  According to the lighting device of claim 9,Since the light guide member is transparent, it does not hinder the appreciation of the exhibits and does not impair the beauty. The light guide member can easily guide light to the upper part of the case, and the light guide member can be installed even if the ceiling of the case is transparent. In addition, light distribution control is facilitated by the light control member, and maintenance can be facilitated by installing the light source device at a position that does not hinder viewing. In addition, light distribution can be easily controlled in any direction.
[0137]
  According to the lighting device of claim 10,There exists an effect similar to Claim 9.
[0138]
  According to the lighting device of claim 11,In addition to the effects similar to those of the ninth aspect and the tenth aspect, since the optical axis direction which is the longitudinal direction of the light guide member can be rotated, the irradiation angle can be arbitrarily changed and wider light distribution control can be performed.
[0139]
  According to the lighting device of claim 12,In addition to the same effects as those of the ninth or tenth aspect, light distribution with a narrowed irradiation angle can be achieved.
[0140]
  According to the lighting device of claim 13,In addition to the same effect as that of the twelfth aspect, the irradiation angle can be arbitrarily changed according to the exhibit and a wide range of light distribution control can be performed.
[0141]
  According to the showcase of claim 14,There exists an effect similar to any one of Claim 1 to 13.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment of the present invention.
FIGS. 2A and 2B show modified embodiments, FIG. 2A is a partial perspective view showing a light control member, and FIGS. 2B to 2D are partial perspective views showing light source devices, respectively.
FIG. 3 is a perspective view of a second embodiment.
FIG. 4 is a perspective view of a third embodiment.
FIG. 5 is a perspective view of a fourth embodiment.
FIG. 6 is a cross-sectional view showing light guide members having different shapes.
FIG. 7 is a perspective view of main parts of a fifth embodiment.
FIG. 8 is a partial perspective view of the modified embodiment.
FIG. 9 is a perspective view of a sixth embodiment.
FIG. 10 is a perspective view of a seventh embodiment.
FIG. 11 is a perspective view of an eighth embodiment.
FIG. 12 is a perspective view of a ninth embodiment.
FIG. 13 is a perspective view of a tenth embodiment.
14A and 14B show an eleventh embodiment, in which FIG. 14A is a partial perspective view, and FIG. 14B is a side view thereof.
FIG. 15 is a perspective view of a twelfth embodiment.
FIG. 16 is a perspective view of a thirteenth embodiment.
FIG. 17 is a perspective view of a fourteenth embodiment.
FIG. 18 is a perspective view of a fifteenth embodiment.
FIG. 19 is a perspective view of a sixteenth embodiment.
FIG. 20 is a partial perspective view of the seventeenth embodiment.
FIG. 21 is a partial perspective view of an eighteenth embodiment.
FIG. 22 is a partial perspective view of the nineteenth embodiment.
FIG. 23 is a partial perspective view of the twentieth embodiment.
FIGS. 24A and 24B show a twenty-first embodiment, wherein FIG. 24A is a perspective view of a main part, and FIG. 24B is a cross-sectional view thereof.
FIG. 25 is a sectional view of the main part of a twenty-second embodiment;
FIG. 26 is a perspective view of a twenty-third embodiment.
FIG. 27 is a perspective view of relevant parts of a twenty-fourth embodiment.
FIG. 28 is a perspective view of a first conventional example.
FIG. 29 is a perspective view of a second conventional example.
FIG. 30 is a perspective view of a third conventional example.
FIG. 31 is another perspective view of the third conventional example.
FIG. 32 is a perspective view of a fourth conventional example.
[Explanation of symbols]
1 Front
2 back
3 side
4 side
5 Top surface
6 Light guide member
7 Light source device
8 Light control member
9 Exhibit Storage Department
10 showcase
11 Showcase base
13 exhibits
18 Light control member
20 Diffuse reflection members
27 Concavity and convexity
35 Convex lens

Claims

An illumination device installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparently, and the light source device installed in a position that does not hinder viewing, and the light source device A transparent light guide member that guides the light to a predetermined position of the exhibit storage unit, and a light control member that controls at least a portion of the light guide member in the direction of irradiating the exhibit with the light guide light And an illumination device in which the light guide member is installed on a base of the exhibition showcase so as to be freely stored in an arbitrary length .

A lighting device that is installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparent, and is a transparent device installed inside the showcase from an arbitrary position on the bottom. A light guide member, a light control member that controls the direction of irradiating at least a part of the light guide light of the light guide member, and a light source device that introduces light from a lower end of the light guide member , An illuminating device in which a light guide member is installed on a base of the exhibition showcase so as to be freely stored for an arbitrary length .

The lighting device according to claim 2, wherein the light guide member has a plate shape.

The lighting device according to claim 3, wherein the plate-shaped light guide member is provided substantially along an inner surface of the exhibition showcase.

A lighting device installed in an exhibition showcase in which at least a part of a front surface, a back surface, both side surfaces, and an upper surface of an exhibit storage unit is transparently formed, and extending from at least one corner of the bottom surface in the height direction of the display showcase A transparent rod-shaped light guide member installed in the vicinity of the corner of the exhibition showcase, and a light control member for controlling the light guide light of at least a part of the light guide member in the direction of irradiating the exhibit And a light source device that introduces light from the lower end of the light guide member, and the light guide member is installed on a base of the exhibition showcase so as to be freely housed in an arbitrary length .

The lighting device according to claim 5 , wherein a cross-sectional shape of the light guide member is a polygonal shape close to a corner in the case.

An illumination device installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparently, and the light source device installed in a position that does not hinder viewing, and the light source device A transparent light guide member that guides the light to a predetermined position of the exhibit storage unit, and a light control member that controls at least a portion of the light guide member in the direction of irradiating the exhibit with the light guide light with one end of the light guide member is an incident end of the light from the light source device is in the base of the display showcase, the light guide member has a structure which is bent approximately 90 degrees in the exhibit containing portion, And the outer side of the said bending part of the said light guide member is a plane by which the mirror surface process of 45 degree | times was performed, and the surface of the said light guide member is smooth.

A lighting device that is installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparent, and is a transparent device installed inside the showcase from an arbitrary position on the bottom. A light guide member, a light control member that controls the direction of irradiating at least a part of the light guide light of the light guide member, and a light source device that introduces light from a lower end of the light guide member, the lower end of the light guide member is an incident end of the light from the light source device is in the base of the display showcase, the light guide member is a structure bent about 90 degrees in the exhibit containing portion, and wherein An illumination device in which an outer side of the bent portion of the light guide member is a flat surface subjected to a mirror treatment of 45 degrees, and the surface of the light guide member is smooth.

An illumination device installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparently, and the light source device installed in a position that does not hinder viewing, and the light source device A transparent light guide member that guides the light to a predetermined position of the exhibit storage unit, and a light control member that controls at least a portion of the light guide member in the direction of irradiating the exhibit with the light guide light wherein the light control member, above the upper end of the light guide member, the light guide member longitudinally rotatable reflectors have that lighting device provided.

A lighting device that is installed in an exhibition showcase in which at least a part of the front, back, both sides, and upper surface of the exhibition storage unit is formed transparent, and is a transparent device installed inside the showcase from an arbitrary position on the bottom. comprising: a light guide member, and a light control member for controlling the direction of irradiating at least a portion of the light guide light the exhibition 示物 of the light guide member, and a light source device for introducing light from the lower end of the light guide member, the light control member, above the upper end of the light guide member, the light guide member longitudinally rotatable reflectors have that lighting device provided.

The lighting device according to claim 9 or 10, wherein the reflecting mirror is rotatable about an optical axis direction of the light guide member.

The lighting device according to claim 9 or 10, wherein a convex lens is installed at an upper end portion of the light guide member.

The lighting device according to claim 12, wherein a distance between the convex lens and an upper end of the light guide member can be changed in an optical axis direction of the light guide member within a range of a focal length of the convex lens.

A showcase having the illumination device according to any one of claims 1 to 13.