【０００１】
【発明の属する技術分野】
本発明は、天井裏、壁裏、床下又は配管内等の狭い空間内の対象物に必要な作業操作等を加えるに際して、それらの内部の対象物を視認するために使用する携帯用照明装置に関するものであり、特に該空間を仕切る仕切り壁等に形成された狭い開口部から該空間内部を広範囲に照射可能である携帯用照明装置に関するものである。
【０００２】
【従来の技術】
天井裏や壁の内側又は床下等に、作業工程上又は作業の都合上前もって仮設置されている電気の屋内配線や電話線又はガスフレキ配管等の外部機器への接続、或いはそれらの保守又は改修乃至増設等に際しては、当然それらの作業に先立って工事対象箇所の施設状況を把握する必要がある。このような場合に、それらの内部に入ったり壁の該当部位を取り壊したりして作業できる場合は問題ないが、多くの場合は、それは許されず、取り付けるべき外部機器それ自体の内部又は壁面等に開いていることのある開口部等を利用して外部からその施設状況を把握し、それによって作業せざるを得ないのが普通である。しかも上記開口部は、多くの場合は、作業用に開口されたものではなく、例えば、スイッチパネル取付け用等の小さなそれ（数センチ角程度）であるようなことは普通である。
【０００３】
そのような開口部の内側は仕切り壁等で囲まれて暗く、工事対象箇所の施設状況を把握するためには、内部を照射する必要がある。そこで、狭い開口であっても照射可能なように、従来、ペンライト等と呼ばれる携帯型の照明器具が用いられている。ペンライトは小型の懐中電灯とも云うべきもので、光源を含む照明部と、その光源に必要な電源となる電池を含む電源部とが、通常円筒状の筐体に一体に構成されている。ペンライトは、通常の筆記用のペンと大差ない位に細く、従来型構造の照明器具として限界に近いまでに小型化されていると考えられる。作業者は使用に際し、前記開口部に先端の照明部を差込んでその内部を照明しようとしている。
【０００４】
しかし、このような小型の照明器具であってもその存在を意識せざるを得ない程小さい（数センチ角又は径程度）開口部を通じての作業が多く、しばしば以下のような困難を伴い、その内部の施設状況の把握や作業の効率低下を招く原因となっている。
【０００５】
これを、図８を用いて説明する。開口部１１を通じて壁の内部を照明しようとしている照明器具はペンライト１２であり、一般的には充分小形な照明器具であると云えるが、開口部１１もかなり小さいため、相対的には小形であるとも云えず、内部の照明のために該開口部１１にこれを近づけるとそこから内部を覗き込む際に障害となり、逆に、これを避けるため該ペンライト１２を該開口部１１から遠ざけると、今度は照明が不完全となり、内部は暗くなって目的物の把握が困難になってしまうこととなる。
【０００６】
また、以上のペンライト１２のような従来型の照明器具の場合、限られた光量を目的の個所にスポット的に集中させるため集光レンズや凹面鏡の反射板が備えられているが、これらによる強い指向性のため、極めて狭い範囲Ｓ１しか照射されず、特に狭い開口部１１を通して見る場合、更に作業者は照明器具が照射するのと同じ方向からしか目視できない。このため、特に開口部１１から離れ、かつ仕切り壁１３の背後に隠れた部分を目視しようとすると、照明器具が覗き込むうえで障害となる。更に照射されて明るいＳ１の周辺部分には集光レンズの収差による明暗の多重環が生じるため、目視するのに有効な明るい範囲は一層狭まる。この結果、例えば、図８に示す作業対象の電線１４の末端は、照射範囲Ｓ１の多重環の内側Ｓ２に入らなければ視認し難い。このため、作業者は、照明器具で照射する方向と覗き込む方向とを共にゆっくりと変えながら、時間をかけて内部の施設状況を把握せざるを得なくなる。
【０００７】
狭い開口部を通じて壁内の配線やガス配管等を一旦引出し、外部で配線相互や外部機器との接続処理等をしてから再度開口部を通じて壁内に戻したり、接続準備のための端末処理等をすることも多い。こうしたケーブルの引出し作業をする場合等、両手を使う必要性も高く、その場合は、照明器具はこれを口にくわえて開口部内を照射しつつ覗き込むような作業を余儀なくされることも多く、開口部内の視認や作業の効率を一層低下させることになっている。以上のように、ペンライトのような従来型照明器具をそのまま小型化しただけのものでは、狭い開口部内を照射して施設状況を把握し作業するために充分有効であるとは云えない。
【０００８】
【発明が解決しようとする課題】
本発明は、以上の従来の携帯用照明装置の問題点を解消すること、即ち、仕切り壁等に設けられた開口部の内部を照射する際に、開口部に対して占有するスペースを最小限に留めて内部の目視のため及び作業のための開口スペースを十分確保できるようにすること、更にその保持のために作業者が自分の手や口を使う必要がなく、作業のために両手を確保しておくことが可能なこと、加えて光源には過度な指向性や集光レンズの収差等で生じる照射範囲周辺の明暗の多重環がなく、極力広範に照射可能であることの各条件を確保できる携帯用照明装置を提供することを解決の課題とする。
【０００９】
【課題を解決するための手段】
本発明の１は、照明部と、該照明部に駆動電流を供給する電源部とを備えた携帯用照明装置に於いて、
前記照明部を、前記電源部の筐体から延長したアーム部材と、該アーム部材の先端に設けた逆Ｕ字形係止部材であって、閉じた空間を仕切る仕切り壁の開口部縁に係止するための逆Ｕ字形係止部材と、該逆Ｕ字形係止部材の先端側垂下部の外面に配した光源とで構成した携帯用照明装置である。
【００１０】
本発明の２は、本発明の１の携帯照明装置に於いて、前記照明部の光源の背後に平面状の反射板を配置したものである。
【００１１】
本発明の３は、本発明の１又は２の携帯用照明装置に於いて、前記電源部の筐体を箱形に構成し、該電源部の筐体の裏面中央部にアーム部材収納用縦溝を、該電源部の筐体の上部に該アーム部材収納用縦溝に連続する逆Ｕ字形係止部材収納用縦溝を、それぞれ構成し、
かつ前記アーム部材の基部を、前記電源部の筐体の下端中央部に回動自在に取り付け、該アーム部材を該アーム部材収納用縦溝中に収納するように回動させると、その上部の逆Ｕ字形係止部材が前記逆Ｕ字形係止部材収納用縦溝中に収納され、かつ該逆Ｕ字形係止部材の先端側垂下部の外面に配した光源が該電源部の筐体の前面側に露出することとなるように構成したものである。
【００１２】
本発明の４は、本発明の３の携帯用照明装置に於いて、前記アーム部材の、前記アーム部材収納用縦溝に収納した場合に露出することとなる面に、胸ポケットに差込み可能な係止片を配したものである。
【００１３】
本発明の５は、本発明の３又は４の携帯用照明装置に於いて、前記電源部の筐体の前面の、前記アーム部材の前記アーム部材収納用縦溝に収納状態で露出することとなる光源の周囲に反射部材を配したものである。
【００１４】
本発明の６は、本発明の３、４又は５の携帯用照明装置に於いて、前記アーム部材に、これを前記アーム部材収納用縦溝に収納した場合に前記筐体の裏面側をカバーすることとなる被覆部材を構成したものである。
【００１５】
【発明の実施の形態】
本発明は、照明部と、該照明部に駆動電流を供給する電源部とからなり、該照明部を、該電源部の筐体から延長したアーム部材と、該アーム部材の先端に設けた逆Ｕ字形係止部材であって、閉じた空間を仕切る仕切り壁の開口部縁に係止するための逆Ｕ字形係止部材と、該逆Ｕ字形係止部材の先端側垂下部の外面に配した光源とで構成した携帯用照明装置である。
【００１６】
前記照明部は、以上のように、電源部の筐体から延長したアーム部材と、その先端に設けた逆Ｕ字形係止部材と、その先端垂下部の外面に配した光源とで構成したものであり、上記仕切り壁の開口部縁に該逆Ｕ字形係止部材を係止することにより、該開口部に大きな占有部分を取らずに、その先端側垂下部の外面に配した光源を該仕切り壁の内側に位置させて照明できるようにしたものである。該開口部に大きな占有部分を取らないようにするとの趣旨から、上記アーム部材及びその先端の逆Ｕ字形係止部材は必要な強度等を保持することを前提に、可能な限り細く又は薄く形成するのが好ましい。他方、前記筐体は、電源を保持し得るもので、あまり大きくない方がよいが、特にその形状等を限定する理由はない。
【００１７】
また前記逆Ｕ字形係止部材は、前記のように、前記仕切り壁の開口部縁に係止するための部材であるから、当然、立ち上がり部分と先端側垂下部との間隔を対象の開口部縁に係止可能な広さを持つものに構成する。具体的には、対象となる建築物の壁面開口部等に係止可能な間隔とする。
【００１８】
前記アーム部材は、前記のように、電源部の筐体から延長したものであるが、これはこの携帯用照明装置をできるだけコンパクトにして携帯し易くする趣旨から、該筐体から引き出し自在に引き出しうるものとし又は折り畳み自在に展開できるように構成するのが好ましい。
【００１９】
例えば、前記電源部の筐体を箱形に構成し、該電源部の筐体の裏面中央部にアーム部材収納用縦溝を、該電源部の筐体の上部に該アーム部材収納用縦溝に連続する逆Ｕ字形係止部材収納用縦溝を、それぞれ構成し、かつ前記アーム部材の基部を、前記電源部の筐体の下端中央部に回動自在に取り付け、該アーム部材を該アーム部材収納用縦溝中に収納するように回動させると、その上部の逆Ｕ字形係止部材が前記逆Ｕ字形係止部材収納用縦溝中に収納され、かつ該逆Ｕ字形係止部材の先端側垂下部の外面に配した光源が該電源部の筐体の前面側に露出することとなるように構成したものである。
【００２０】
前記アーム部材を、以上のように、その基部を、前記電源部の筐体の下端中央部に回動自在に取り付け、前記電源部の筐体の裏面側に構成したアーム部材収納用縦溝中に収納し得、かつ同時に逆Ｕ字形係止部材を該筐体の上部に構成した逆Ｕ字形係止部材収納用縦溝中に収納し得るように構成した場合は、該アーム部材の、該アーム部材収納用縦溝に収納した際に露出することとなる面に、胸ポケットに差込み可能な係止片を配することとするのが好ましい。
【００２１】
このように係止片を構成することにより、例えば、該係止片を用いてこの携帯用照明装置を胸ポケット等の係止すると、該携帯用照明装置の光源が胸の前面で前方を向いて位置することとなり、この状態で電源スイッチを投入すると、両手が開いた状態で前方を照明することができることとなり好都合である。
【００２２】
更に前記アーム部材を以上のように構成した場合は、該アーム部材に、これを前記アーム部材収納用縦溝に収納した場合に前記筐体の裏面側をカバーすることとなる被覆部材を構成することとするのが好ましい。
【００２３】
このように構成することにより、該アーム部材を該アーム部材収納用縦溝中に収納した状態では該被覆部材が筐体の裏面側を被覆し、該裏面側が汚れるのを防止することができるため、該アーム部材を展開してその上部の逆Ｕ字形係止部材を用いて仕切り壁の開口部等に係止した際に、該筐体の裏面側がその壁面等に当接しても、これを汚してしまうような問題が生じる虞がない。
【００２４】
前記光源は、必要な光量を持った種々の豆電球又はＬＥＤ（発光ダイオード）等を採用することができる。
該光源の背後には平面状の反射板を配置するのが適当である。背後に広がる光をスポット状に絞ることなく前方に反射させ有効利用する趣旨である。
【００２５】
前記電源部の筐体の前面で、前記アーム部材を前記アーム部材収納用縦溝に、前記逆Ｕ字形係止部材を逆Ｕ字形係止部材収納溝に、それぞれ収納した状態で前記光源が露出することとなる部位の周囲に反射部材を配することとするのが好ましい。これは、該アーム部材及び逆Ｕ字形係止部材を以上のように収納状態にした上で、照明のために使用する際に、より有効に前方を照明することができることとなるためである。
【００２６】
従って本発明の携帯用照明装置によれば、建物の壁の内部の一定位置まで設置してあるガスの配管や電線の末端等を見出し、これに外部の機器類を接続する等の作業を行う場合に有効に使用することができる。
【００２７】
このような壁の内部の目的物を見出すために、これに近接する位置のコンセント用の開口部等を利用し、その開口部縁に本発明の携帯用照明装置を係止して内部を照明することができる。開口部縁への係止は、アーム部材の先端の逆Ｕ字形係止部材を係止することで行うことができる。この携帯用照明装置の光源は、前記逆Ｕ字形係止部材の先端側垂下部の外面に配してあるため、以上のような係止状態で、該光源は開口部縁の周縁部から壁内方を向いた状態になっており、この状態で電源を投入すると、閉じられて暗くなっている内部が照明され、目的物を探し易くなる。
【００２８】
前記したように、前記アーム部材及び逆Ｕ字形係止部材は、電池等が収納されている電源部の筐体よりは充分に細く又は薄いものであり、前記開口部に占める割合はごく僅かであって、該開口部から作業者が壁内部を覗き込むのに殆ど邪魔にならない。従って該開口部から内部のガス配管の末端や電源ラインの末端等の目的物を容易に探すことができる。また、前記のように、該光源はレンズを用いておらず、光が絞られないようになっているので、広い範囲を一様に照明することができる。そのため目的物の位置が不明なこのような場合に極めて好都合である。
【００２９】
こうして、本発明の携帯用照明装置によれば、これを手で掴んで保持するような必要なく、建物の壁の内部の照明を良好に行うことができるため、以上のように、ガスの配管や電線の末端等を容易かつ確実に見出し、かつこれに外部の機器類を接続するような作業を容易に行うことができることとなる。
【００３０】
なお、前記アーム部材に被覆部材を構成した場合は、前記したように、筐体の裏面が汚れないようにこれによって被覆されるため、前記のように、アーム部材を展開してその上部の逆Ｕ字形係止部材によって前記開口部に係止したような場合に、該筐体の裏面側が該開口部直下の壁面に当接しても、該壁面を汚してしまうような問題が生じることはない。
【００３１】
また建築途上の暗い室内の隅その他の照明のない場所で作業を行う場合には、本発明の携帯照明装置を作業者の胸のポケット等に係止してその前方の手元付近を広くかつ良好に照明することができるため、照明自体が良好に行われることに加えて、作業に両手を用いることができるので、作業もまた極めて良好に行われることになる。
【００３２】
なお本発明の携帯照明装置は、先に述べたように、前記アーム部材収納用縦溝に収納したアーム部材の露出面に配した係止片を利用して作業者の胸ポケット等にこれを係止することができるものである。
【００３３】
【実施例】
以下、本発明の携帯用照明装置の実施例について、図面を参照しながら詳細に説明する。
図面は本発明の携帯用照明装置の実施例を示したもので、図１はアームを筐体のアーム収納溝中に収納した携帯用照明装置の正面側から見た斜視図、図２はアームを筐体のアーム収納溝中に収納した携帯用照明装置の背面側から見た斜視図、図３はアームを展開した携帯用照明装置を上下反転した状態で光源側から見た斜視図、図４はアームを展開した携帯用照明装置を上下反転した状態で光源と反対側から見た斜視図、図５（ａ）はアームをアーム収納溝中に収納した携帯用照明装置に於ける光源及びその周囲の斜視図、図５（ｂ）は図５（ａ）のＡ−Ａ線断面図、図６はアームをアーム収納溝中に収納した携帯用照明装置の内部機構を省略した中央部縦断面図、図７は、壁の開口部縁に上下反転した携帯用照明装置に於ける展開したアームの係止部を係止して、その光源で壁体の内部を照明している状態を示した断面説明図、図８はペンライトを用いて壁の内部を開口部から照明している状態を示した従来例の断面説明図である。
【００３４】
この実施例の携帯用照明装置は、図１〜図４に示すように、基本的に、電源部収納用の筐体１と、該筐体１から延長したアーム（アーム部材）２、該アームの先端に構成した逆Ｕ字形の係止部（逆Ｕ字形係止部材）３及び該係止部３の先端側垂下部３ａの外面に配した光源４からなる照明部５とで構成する。
【００３５】
前記筐体１は、前記のように電源部収納用のケースであり、この実施例では、図１〜図４に示すように、ほぼ直方体状のケースに構成してある。電源として、乾電池又は対応するサイズの二次電池が使用可能であり、該筐体１の内部の収納部にこれらを収納する。該筐体１の上部両側に開閉自在な蓋体１ａ、１ａが配してあり、これらを開けて前記収納部に対応するサイズの乾電池（この実施例では単３の乾電池）等が収納できるようになっている。なお筐体１の側部下端には、図１〜図４に示すように、電極１ｂ、１ｂが配してあり、前記収納部に二次電池を収納した場合は、これらを利用して充電できる。なおまた電源スイッチ１ｃは、図１及び図４に示すように、筐体１の下部中央に配してあり、これを押し下げる毎にオンオフを繰り返すように構成してある。当然、オンのときに、前記光源４が発光する。
【００３６】
図３に示すように、前記筐体１の背面には複数の縦溝を備えた壁当たり１ｄを配し、かつその中央部縦方向に沿ってアーム収納溝（アーム部材収納用縦溝）１ｅを形成しておくものとする。また該アーム収納溝１ｅの下部側には、図１〜図４及び図６に示すように、筐体１の前面側に突き抜ける係止部収納溝（逆Ｕ字形係止部材収納用縦溝）１ｆを形成しておくものとする。
【００３７】
前記壁当たり１ｄは、図３に示すように（この図は上下反転している）、前記筐体１の背面から見て長方形に膨出させた部材の両肩を各々斜めにカットした全体形状の部材であり、前記したように、中央部のアーム収納溝１ｅ及びそれ以外の部位の複数の縦溝を備えたものである。該筐体１の背面に於いて、下部には後記ヒンジ２ａを構成するだけのスペースを残し、また上部にも僅かのスペースを残して配したものである。
【００３８】
前記アーム２は、前記したように、照明部５の一部を構成するものであり、その先端に逆Ｕ字形の係止部３を備え、かつ該係止部３の先端垂下部３ａに光源４を備えたものである。該係止部３は、後述するように、閉じた空間の開口部縁に係止するための手段であり、このように係止した場合に、これを備えたアーム２を介して前記筐体１を吊り下げ支持するものであるから、相応の剛性と強度とを供えたものである必要がある。該アーム２も同様である。また該アーム２及び係止部３は、云うまでもなく、その中に該筐体１の電源から後者の先端垂下部３ａの光源４まで電流供給用の導体を配する必要があり、この実施例では、該アーム２及び係止部３中の図示しない貫通孔を通じてこれを貫通させてある。
【００３９】
前記アーム２は、特に図２、図３及び図６に示すように、その基部を筐体１の下部中央にヒンジ２ａを介して回動自在に取り付ける。該アーム２の取付位置は、これを該筐体１の背面側に倒すと、図１、図２及び図６に示すように、前記アーム収納溝１ｅ中に収納状態となり、かつ該アーム２の先端側に構成した逆Ｕ字形の係止部３が前記係止部収納溝１ｆに収納状態になるように設定する。
【００４０】
また該アーム２は、図２〜図４及び図６に示すように、その外面側に壁当たりカバー（被覆部材）２ｂを取り付ける。該壁当たりカバー２ｂは、該アーム２を、前記のように、筐体１の背面側に倒し、該アーム収納溝１ｅ中に収納状態にさせた際に、前記壁当たり１ｄに当接し、その全体を被覆するように、その背面から見た形状を定めかつ取付位置を設定する。また該壁当たりカバー２ｂには、図２、図４及び図６に示すように、前記アーム２をアーム収納溝１ｅに収納した状態で、該筐体１の下部側が開いた向きとなるようにクリップ（係止片）２ｃを、その裏面に構成する。
【００４１】
前記光源４は、この実施例では、豆電球で構成したものである。図５（ａ）及び（ｂ）に示すように、前記係止部３の先端垂下部３ａの前面に僅かに凹面状となってはいるがほぼ平面状の反射板４ａを構成し、その前面中央に前記光源４を配置する。前記したように、前記アーム２をアーム収納溝１ｅに収納し、前記係止部３を係止部収納溝１ｆに収納すると、該係止部３の先端垂下部３ａに構成した光源４は、図１に示すように、前記筐体１の前面側に露出することとなる。該筐体１の前面に於いて、このようにして露出する光源４の周囲に、図１、図４及び図５（ａ）、（ｂ）に示すように、指向性を高めた曲率の補助反射板（反射部材）４ｂを配する。
【００４２】
従ってこの実施例の携帯用照明装置によれば、例えば、建物の壁の内部の仕切られた空間内の一定位置まで設置してあるガス又は水道のチューブ配管の末端、或いは電線又は電話線の末端等を見出し、これに外部の機器類を接続する等の作業を行う場合に有効に活用することができる。
【００４３】
仕切り壁１３の内部の目的物、例えば、電線１４の末端を見出すために、これに近接する位置のコンセント用等の開口部１１を利用し、その開口部１１縁にこの実施例の携帯用照明装置を係止して内部を照明することができる。開口部１１縁への係止は、図１及び図２に示すように、アーム収納溝１ｅ及び係止部収納溝１ｆ中にそれぞれ収納されているアーム２及び係止部３を、図４に示すように、該アーム２の基部のヒンジ２ａで１８０度回動させて前記筐体１の下部から直線状に延長した状態にし、かつ該筐体１を上下反転させた上で、図７に示すように、上部の逆Ｕ字形の係止部３の先端垂下部３ａを該開口部１１の内側に挿入し、その中間部を該開口部１１の縁に係止することにより行うことができる。
【００４４】
この状態で、電源スイッチ１ｃを押し下げ操作すると、電源が投入され、前記係止部３の先端垂下部３ａの前面に配してある光源４が発光し、壁に閉じられて暗くなっている内部が照明され、目的物である電線１４の末端が探しやすくなるものである。前記光源４は、先に述べたように、集光レンズを有さず、かつその背後に僅かに凹面状となった反射板４ａを備えているに過ぎない物であるため、図７に示すように、その前方に向かって大きな角度で光が拡散することとなり、前記壁内のような比較的狭い範囲では、該光源４の前方を広い範囲でかつ充分に照明することができる。そのため、前記のように、この近辺に位置している前記電線１４の末端が容易にその照明範囲に入ることとなる。
【００４５】
また前記光源４は、前記開口部１１の縁に係止した前記係止部３の先端垂下部３ａに配してあるものであり、かつ係止部３及びこれに連続するアーム２は、前記のように、該開口部１１の僅かの部分を占めるに過ぎない物であるため、作業者が該開口部１１から内部を覗き込む際に、殆ど邪魔になることがない。そのため、作業者は、該開口部１１から壁の内部を良好に覗き込み得、前記のように照明されている電線１４の末端を容易に見出すことができる。また該光源４を、以上の位置に保持するのに作業者の手を必要としないため、例えば、該電線１４の末端を引き出して対応する器具に接続する等の作業を行う場合に、両手を自由に用いることができ、その作業が容易に行い得るものとなる。
【００４６】
更にまたこの実施例の携帯用照明装置は、その筐体１の背面に壁当たり１ｄを構成し、かつ前記アーム２に壁当たりカバー２ｂを構成しておき、この携帯用照明装置を、以上のように、前記係止部３で前記開口部１１に係止して使用する場合を除いて、図１及び図２に示すように、該アーム２を前記アーム収納溝１ｅに収納することで、同時に、該壁当たりカバー２ｂで該壁当たり１ｄを被覆しておくようにしたことで、該壁当たり１ｄが作業現場に於ける作業中に汚れることを防止ししたため、該壁当たり１ｄは、常にきれいな状態を保持し得、前記のように、前記開口部１１に該携帯用照明装置を前記係止部３で係止した際に、該開口部１１の直下の壁面をこれに当接する壁当たり１ｄによって汚してしまうような問題が生じることはない。
【００４７】
また建築途上の暗い室内の隅その他の照明のない、しかし必ずしも狭くはない場所で作業を行う場合には、この実施例の携帯照明装置を、図１及び図２に示すように、前記アーム２を前記アーム収納溝１ｅに収納し、かつ前記係止部３を前記係止部収納溝１ｆに収納した状態で、前記壁当たりカバー２ｂの裏面に構成したクリップ２ｃで、作業者の胸のポケット等に係止してその前方の手元付近を広くかつ良好に照明することができる。
【００４８】
以上の状態で、図１に示すように、前記光源４は前記筐体１の前面側に露出しており、その周囲に構成した補助反射板４ｂにより該光源４は指向性が高められており、上記のように、この携帯用照明装置を胸に係止すると、その前方が良好に照明されることになる。
【００４９】
この場合も、該携帯用照明装置を保持するのに手を用いていないため、作業者は両手が開いており、良好に照明される手元で、両手を用いて能率的に作業を行うことができるものである。
【００５０】
いずれの場合でも、不使用時には、前記電源スイッチ１ｃを操作してオフ状態にしておくのは云うまでもない。
【００５１】
【発明の効果】
本発明の１の携帯用照明装置によれば、閉じた空間を仕切る仕切り壁の小さな開口部からその開口スペースの占有を最小限に抑えながら内部を良好に照明することができる。またその照明の際に作業者の手を用いず、作業のために両手を確保することができる。
【００５２】
本発明の２の携帯用照明装置によれば、過度の指向性を排除して広範な照射範囲を照射することができ、従来の照明器具と異なりこれを移動させながら照射するような必要はない。壁内のような狭い空間ではこのように指向性を排除しても容易に必要な光量を確保できるものでもある。
【００５３】
本発明の３の携帯用照明装置によれば、アーム部材及び逆Ｕ字形係止部材をそれぞれアーム部材収納用縦溝又は逆Ｕ字形係止部材収納用縦溝中に収納することで該携帯用照明装置をコンパクトに折り畳むことができる。またこの状態で光源が筐体の前面側に露出するので、作業者が手で掴んで若しくは胸ポケット等にその下部を入れた状態で身体の前方を照射することも可能になる。
【００５４】
本発明の４の携帯照明装置によれば、アーム部材及び逆Ｕ字形係止部材をそれぞれアーム部材収納用縦溝又は逆Ｕ字形係止部材収納用縦溝中に収納することで該携帯用照明装置をコンパクトに折り畳んだ状態で、前記係止片を利用してこれを作業者の胸ポケット等に容易に係止することができる。そのためこれによって手元を良好に照明してその作業を容易に行えるようにすることができる。
【００５５】
本発明の５の携帯用照明装置によれば、アーム部材及び逆Ｕ字形係止部材をそれぞれアーム部材収納用縦溝又は逆Ｕ字形係止部材収納用縦溝中に収納することで該携帯用照明装置をコンパクトに折り畳んだ上で照明動作を行う場合、光源の周囲の反射部材により、適切に照射範囲を絞る等を行い、手元を良好に照明することができるようにすることができる。
【００５６】
本発明の６の携帯用照明装置によれば、通常、筐体の裏面が汚れないように被覆部材によって被覆されるため、アーム部材を展開してその上部の逆Ｕ字形係止部材によって前記開口部に係止したような場合に、該筐体の裏面側が該開口部直下の壁面に当接しても、該壁面を汚してしまうような問題が生じることはない。
【図面の簡単な説明】
【図１】アームを筐体のアーム収納溝中に収納した携帯用照明装置の正面側から見た斜視図。
【図２】アームを筐体のアーム収納溝中に収納した携帯用照明装置の背面側から見た斜視図。
【図３】アームを展開した携帯用照明装置を上下反転した状態で光源側から見た斜視図。
【図４】アームを展開した携帯用照明装置を上下反転した状態で光源と反対側から見た斜視図。
【図５】（ａ）はアームをアーム収納溝中に収納した携帯用照明装置に於ける光源及びその周囲の斜視図。（ｂ）は（ａ）のＡ−Ａ線断面図。
【図６】アームを筐体のアーム収納溝中に収納した携帯用照明装置の内部機構を省略した中央部縦断面図。
【図７】壁の開口部縁に上下反転した携帯用照明装置に於ける展開したアームの係止部を係止して、その光源で壁体の内部を照明している状態を示した断面説明図。
【図８】ペンライトを用いて壁の内部を開口部から照明している状態を示した従来例の断面説明図。
【符号の説明】
１ 筐体
１ａ 蓋体
１ｂ 電極
１ｃ 電源スイッチ
１ｄ 壁当たり
１ｅ アーム収納溝
１ｆ 係止部収納溝
２ アーム
２ａ ヒンジ
２ｂ 壁当たりカバー
２ｃ クリップ
３ 逆Ｕ字形の係止部
３ａ 先端側垂下部
４ 光源
４ａ 反射板
４ｂ 補助反射板
５ 照明部
１１ 開口部
１２ ペンライト
１３ 仕切り壁
１４ 電線[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable lighting device used for visually recognizing an object inside a narrow space such as a space above a ceiling, behind a wall, under the floor, or in a pipe when necessary work operation or the like is added to the object. More particularly, the present invention relates to a portable lighting device capable of irradiating the inside of a space with a narrow opening formed in a partition wall or the like that partitions the space.
[0002]
[Prior art]
Connection to external equipment such as indoor wiring, telephone lines or gas-flexible pipes temporarily installed in the work space or under the ceiling, inside the wall or under the floor, etc. When expanding facilities, it is naturally necessary to grasp the status of facilities at the construction site prior to such work. In such a case, there is no problem if it is possible to work inside them or break down the corresponding part of the wall, but in many cases, it is not allowed, and it is not allowed to be installed inside the external device itself or on the wall etc. It is common practice to grasp the state of the facility from outside using an opening or the like that may be open, and to work accordingly. In addition, the opening is not usually opened for work, but is usually small (about several centimeters square) for mounting a switch panel, for example.
[0003]
The inside of such an opening is surrounded by a partition wall or the like and is dark, and it is necessary to irradiate the inside in order to grasp the state of the facility at the site to be constructed. Therefore, a portable lighting device called a penlight or the like is conventionally used so that irradiation can be performed even with a narrow opening. A penlight can be called a small flashlight, in which a lighting unit including a light source and a power supply unit including a battery serving as a power supply required for the light source are usually integrally formed in a cylindrical housing. The penlight is as thin as not much different from a normal writing pen, and is considered to be miniaturized to the limit as a lighting fixture having a conventional structure. In use, an operator attempts to illuminate the interior by inserting a lighting section at the tip into the opening.
[0004]
However, even through such small-sized lighting fixtures, there are many operations through openings that are so small (several centimeters square or diameter) that it is unavoidable to be aware of their existence. It is a cause of grasping the state of the internal facilities and lowering the work efficiency.
[0005]
This will be described with reference to FIG. The lighting fixture that is trying to illuminate the inside of the wall through the opening 11 is a penlight 12, which can be generally considered to be a sufficiently small lighting fixture. However, since the opening 11 is also quite small, it is relatively small. It cannot be said that, when this is brought close to the opening 11 for lighting the inside, it becomes an obstacle when looking into the inside from there, and conversely, the penlight 12 is moved away from the opening 11 to avoid this. In this case, the illumination is incomplete, the interior is darkened, and it is difficult to grasp the target.
[0006]
Further, in the case of a conventional luminaire such as the penlight 12 described above, a condensing lens and a reflector of a concave mirror are provided to concentrate a limited amount of light in a spot at a target location. Due to the strong directivity, only a very narrow area S1 is illuminated, and especially when viewed through the narrow opening 11, the operator can only see from the same direction as the illumination illuminates. For this reason, especially when trying to see the part which is away from the opening part 11 and hidden behind the partition wall 13, it becomes an obstacle for the lighting equipment to look into it. Furthermore, since a bright and dark multiple ring due to aberration of the condenser lens is generated in a peripheral portion of S1 which is irradiated and bright, a bright range effective for visual observation is further narrowed. As a result, for example, the end of the work target electric wire 14 shown in FIG. 8 is difficult to visually recognize unless it enters the inside S2 of the multiple ring of the irradiation range S1. For this reason, the operator must take time to grasp the state of the internal facilities while slowly changing the direction of irradiation with the lighting fixture and the direction of peeping.
[0007]
Once the wiring and gas pipes inside the wall are pulled out through the narrow opening, the connection between the wiring and external equipment is externally processed, then returned to the wall again through the opening, and the terminal processing for connection preparation is performed. Often do. It is also necessary to use both hands, such as when pulling out such a cable, in which case, the lighting equipment is often forced to work by gazing at the mouth while illuminating the inside of the opening, This will further reduce the efficiency of visual recognition and work in the opening. As described above, a conventional luminaire such as a penlight, which is simply reduced in size, is not sufficiently effective for irradiating the inside of a narrow opening and grasping the state of the facility for work.
[0008]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems of the conventional portable lighting device, that is, minimizes the space occupied by the opening when illuminating the inside of the opening provided in the partition wall or the like. To ensure that there is enough open space for visual inspection and work inside, and that there is no need for workers to use their own hands or mouth to hold the work, and to use both hands for work. Each condition must be able to be secured, and in addition, the light source should be able to irradiate as wide as possible without any multiple rings of light and dark around the irradiation range caused by excessive directivity and aberration of the condenser lens, etc. It is an object of the present invention to provide a portable lighting device that can ensure the above.
[0009]
[Means for Solving the Problems]
One aspect of the present invention is a portable lighting device including a lighting unit and a power supply unit that supplies a driving current to the lighting unit.
An arm member extending from the housing of the power supply unit, and an inverted U-shaped locking member provided at a tip of the arm member, the lighting unit being locked to an opening edge of a partition wall that partitions a closed space. And a light source disposed on an outer surface of a lower portion of the inverted U-shaped locking member at a tip end side of the portable lighting device.
[0010]
According to a second aspect of the present invention, in the portable lighting device of the first aspect of the present invention, a planar reflector is disposed behind the light source of the illumination unit.
[0011]
According to a third aspect of the present invention, in the portable lighting device according to the first or second aspect of the present invention, the housing of the power supply unit is formed in a box shape, and the arm member storage vertical is provided at the center of the back surface of the power supply unit housing. Forming a groove in the upper part of the housing of the power supply unit, a vertical groove for storing an inverted U-shaped locking member that is continuous with the vertical groove for storing the arm member,
And the base of the arm member is rotatably attached to the center of the lower end of the housing of the power supply unit, and when the arm member is rotated so as to be stored in the vertical groove for storing the arm member, the upper part of the arm member is rotated. An inverted U-shaped locking member is housed in the vertical groove for storing the inverted U-shaped locking member, and a light source disposed on an outer surface of a lower portion of a tip side of the inverted U-shaped locking member is a light source of the housing of the power supply unit. It is configured to be exposed on the front side.
[0012]
According to a fourth aspect of the present invention, in the portable lighting device according to the third aspect of the present invention, the arm member can be inserted into a breast pocket on a surface that is exposed when the arm member is housed in the arm member housing vertical groove. The locking piece is provided.
[0013]
According to a fifth aspect of the present invention, in the portable lighting device of the third or fourth aspect of the present invention, in the portable lighting device according to the third or fourth aspect, the armature is exposed in the arm member storage vertical groove on the front surface of the housing of the power supply unit. And a reflection member disposed around the light source.
[0014]
A sixth aspect of the present invention is the portable lighting device according to the third, fourth or fifth aspect of the present invention, wherein the arm member is covered with the vertical groove for accommodating the arm member and covers the back side of the housing. This constitutes a covering member to be formed.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention includes an illumination unit and a power supply unit that supplies a drive current to the illumination unit. The illumination unit includes an arm member extending from a housing of the power supply unit, and an inverted arm member provided at a tip of the arm member. A U-shaped locking member, wherein the inverted U-shaped locking member is configured to lock to an opening edge of a partition wall for partitioning a closed space; And a portable lighting device comprising a light source.
[0016]
As described above, the illumination unit is configured by the arm member extending from the housing of the power supply unit, the inverted U-shaped locking member provided at the tip thereof, and the light source arranged on the outer surface of the hanging part at the tip. By locking the inverted U-shaped locking member at the edge of the opening of the partition wall, the light source arranged on the outer surface of the lower part of the tip side without taking up a large occupied portion in the opening. It is located inside the partition so that it can be illuminated. The arm member and the inverted U-shaped locking member at the tip thereof are formed as thin or thin as possible on the assumption that the arm member and the inverted U-shaped locking member at the tip thereof maintain necessary strength and the like, in order not to take a large occupied portion in the opening. Is preferred. On the other hand, the housing is capable of holding a power supply and is preferably not so large, but there is no particular reason to limit its shape and the like.
[0017]
Further, as described above, the inverted U-shaped locking member is a member for locking to the edge of the opening of the partition wall. It is configured to have an area that can be locked to the edge. Specifically, the interval is set so that it can be locked to a wall opening or the like of a target building.
[0018]
As described above, the arm member is extended from the housing of the power supply unit. However, this arm member is drawn out of the housing so as to be as compact as possible and easy to carry. Preferably, it is configured to be flexible or foldable.
[0019]
For example, the housing of the power supply unit is formed in a box shape, and a vertical groove for storing an arm member is provided at a central portion of a rear surface of the housing of the power supply unit, and the vertical groove for storing an arm member is provided at an upper portion of the housing of the power supply unit. A vertical groove for accommodating an inverted U-shaped locking member, and a base of the arm member is rotatably attached to a center of a lower end of a housing of the power supply unit, and the arm member is attached to the arm. When rotated so as to be stored in the vertical groove for storing the member, the inverted U-shaped locking member on the upper side is stored in the vertical groove for storing the inverted U-shaped locking member, and the inverted U-shaped locking member is rotated. The light source arranged on the outer surface of the lower part on the tip side is exposed to the front side of the housing of the power supply unit.
[0020]
As described above, the base of the arm member is rotatably attached to the center of the lower end of the housing of the power supply unit, and the arm member storage vertical groove formed on the back side of the housing of the power supply unit. And, at the same time, when the inverted U-shaped locking member can be stored in the vertical groove for storing the inverted U-shaped locking member formed in the upper part of the housing, It is preferable to arrange a locking piece that can be inserted into a breast pocket on a surface that is exposed when the armature is stored in the arm member storage vertical groove.
[0021]
By configuring the locking piece in this manner, for example, when the portable lighting device is locked in a breast pocket or the like using the locking piece, the light source of the portable lighting device faces forward on the front of the chest. When the power switch is turned on in this state, the front can be illuminated with both hands open, which is convenient.
[0022]
Further, when the arm member is configured as described above, the arm member forms a covering member that covers the back side of the housing when the arm member is stored in the arm member storing vertical groove. It is preferred that
[0023]
With this configuration, in a state where the arm member is housed in the arm member housing vertical groove, the covering member covers the rear surface of the housing, and the rear surface can be prevented from being stained. When the arm member is unfolded and locked at the opening or the like of the partition wall using the inverted U-shaped locking member at the top thereof, even if the rear surface side of the housing abuts against the wall surface or the like, There is no risk of causing a problem of getting dirty.
[0024]
As the light source, various miniature bulbs or LEDs (light emitting diodes) having a necessary light amount can be adopted.
It is appropriate to arrange a planar reflector behind the light source. The purpose is to effectively utilize the light that spreads behind it by reflecting it forward without narrowing it down into a spot.
[0025]
The light source is exposed in a state in which the arm member is housed in the arm member housing vertical groove and the inverted U-shaped locking member is housed in the inverted U-shaped locking member housing groove on the front surface of the housing of the power supply unit. It is preferable to arrange a reflection member around the part to be formed. This is because the arm member and the inverted U-shaped locking member are stored as described above, and when used for illumination, the front can be more effectively illuminated.
[0026]
Therefore, according to the portable lighting device of the present invention, a work such as finding out the end of a gas pipe or an electric wire installed to a certain position inside the wall of a building and connecting external devices to the end is performed. Can be used effectively in cases.
[0027]
In order to find an object inside such a wall, an outlet opening or the like located near the wall is used, and the portable lighting device of the present invention is locked at the edge of the opening to illuminate the inside. can do. Locking to the opening edge can be performed by locking an inverted U-shaped locking member at the tip of the arm member. Since the light source of this portable lighting device is arranged on the outer surface of the downwardly-facing lower part of the inverted U-shaped locking member, the light source is moved from the peripheral edge of the opening edge to the wall in the above-described locked state. When the power is turned on in this state, the inside that is closed and darkened is illuminated, and it becomes easy to find the target.
[0028]
As described above, the arm member and the inverted U-shaped locking member are sufficiently thinner or thinner than the housing of the power supply unit in which the battery or the like is housed, and the proportion of the opening in the opening is very small. Therefore, it is hardly obstructed for an operator to look into the inside of the wall from the opening. Therefore, it is possible to easily search for an object such as an end of an internal gas pipe or an end of a power supply line from the opening. Further, as described above, since the light source does not use a lens and the light is not restricted, a wide range can be uniformly illuminated. Therefore, it is very convenient in such a case where the position of the object is unknown.
[0029]
Thus, according to the portable lighting device of the present invention, it is possible to satisfactorily illuminate the interior of the wall of the building without having to grasp and hold it by hand. It is possible to easily and surely find the end of the cable or the end of the electric wire, and to easily perform an operation of connecting external devices to the end.
[0030]
When a covering member is formed on the arm member, as described above, since the rear surface of the housing is covered with the covering member so as not to be contaminated, the arm member is developed and the upper portion is inverted as described above. In the case where the housing is locked to the opening by the U-shaped locking member, even if the rear surface side of the housing contacts the wall surface immediately below the opening, there is no problem that the wall surface is soiled. .
[0031]
Further, when working in a dark room corner or other place without lighting during construction, the portable lighting device of the present invention is locked in a pocket or the like of a worker's chest so that the vicinity in front of the portable lighting device is wide and good. Since the lighting can be performed well, the lighting itself can be performed well, and in addition, since both hands can be used for the work, the work is also performed very well.
[0032]
As described above, the portable lighting device of the present invention uses the locking pieces disposed on the exposed surface of the arm member housed in the vertical groove for housing the arm member to attach it to the worker's chest pocket or the like. It can be locked.
[0033]
【Example】
Hereinafter, embodiments of the portable lighting device of the present invention will be described in detail with reference to the drawings.
The drawings show an embodiment of the portable lighting device of the present invention. FIG. 1 is a front perspective view of a portable lighting device in which an arm is housed in an arm housing groove of a housing, and FIG. FIG. 3 is a perspective view of the portable lighting device in which the arm is unfolded in the arm receiving groove of the housing, as viewed from the rear side, and FIG. 4 is a perspective view of the portable lighting device with the arm expanded and viewed from the side opposite to the light source in a state where the arm is deployed upside down. FIG. 5A is a light source and a light source of the portable lighting device with the arm stored in the arm storing groove. FIG. 5B is a cross-sectional view taken along line AA of FIG. 5A, and FIG. 6 is a longitudinal section of a central portion of the portable lighting device in which an arm is housed in an arm housing groove, in which an internal mechanism is omitted. FIG. 7 is an exploded view of the portable lighting device turned upside down on the edge of the opening of the wall. FIG. 8 is a cross-sectional explanatory view showing a state in which the inside of the wall is illuminated with the light source by locking the locking portion of FIG. It is sectional explanatory drawing of the conventional example which showed.
[0034]
As shown in FIGS. 1 to 4, the portable lighting device of this embodiment basically includes a housing 1 for accommodating a power supply unit, an arm (arm member) 2 extending from the housing 1, And an illuminating section 5 composed of a light source 4 disposed on the outer surface of a tip-side hanging portion 3a of the locking section 3 at the tip of the inverted U-shaped locking section (reverse U-shaped locking member).
[0035]
The housing 1 is a case for accommodating the power supply unit as described above. In this embodiment, as shown in FIGS. 1 to 4, the housing 1 is configured as a substantially rectangular parallelepiped case. A dry battery or a secondary battery of a corresponding size can be used as a power supply, and these are stored in a storage section inside the housing 1. Openable and closable lids 1a, 1a are arranged on both sides of the upper portion of the housing 1, and these are opened so that a dry battery (in this embodiment, AA dry battery) of a size corresponding to the storage portion can be stored. It has become. As shown in FIGS. 1 to 4, electrodes 1b and 1b are provided at the lower end of the side of the housing 1. When a secondary battery is stored in the storage section, the secondary battery is charged by using these. it can. As shown in FIGS. 1 and 4, the power switch 1c is disposed at the center of the lower portion of the housing 1, and is configured to repeat on and off each time the power switch is depressed. Naturally, when turned on, the light source 4 emits light.
[0036]
As shown in FIG. 3, 1d per wall provided with a plurality of vertical grooves is arranged on the back surface of the housing 1, and an arm storage groove (arm member storage vertical groove) 1e is provided along the central vertical direction. Is formed in advance. On the lower side of the arm storage groove 1e, as shown in FIGS. 1 to 4 and 6, a locking portion storage groove (an inverted U-shaped vertical groove for storing a locking member) that penetrates to the front side of the housing 1. If is formed.
[0037]
As shown in FIG. 3 (the figure is turned upside down), the entire shape of the member 1d per wall is obtained by obliquely cutting both shoulders of a member bulging into a rectangle when viewed from the back of the housing 1. As described above, the member is provided with the arm storage groove 1e at the center and a plurality of vertical grooves at other portions. On the rear surface of the housing 1, a space is provided at a lower portion for forming a hinge 2a to be described later, and a small space is left at an upper portion.
[0038]
As described above, the arm 2 constitutes a part of the illuminating section 5, and has an inverted U-shaped locking section 3 at the tip thereof, and a light source at a tip hanging portion 3 a of the locking section 3. 4 is provided. The locking portion 3 is a means for locking to the edge of the opening of the closed space, as described later. When the locking portion 3 is locked in this manner, the housing 3 is connected to the housing 2 via the arm 2 provided with the locking portion. 1 is suspended and supported, so that it must have appropriate rigidity and strength. The same applies to the arm 2. Needless to say, the arm 2 and the locking portion 3 need to be provided with a current supply conductor from the power supply of the housing 1 to the light source 4 of the latter hanging portion 3a. In the example, this is penetrated through a through hole (not shown) in the arm 2 and the locking portion 3.
[0039]
As shown in FIGS. 2, 3 and 6, the base of the arm 2 is rotatably attached to the lower center of the housing 1 via a hinge 2a. When the arm 2 is attached to the rear side of the housing 1, the arm 2 is mounted in the arm storage groove 1e as shown in FIGS. The inverted U-shaped locking portion 3 formed on the distal end side is set so as to be stored in the locking portion storage groove 1f.
[0040]
As shown in FIGS. 2 to 4 and 6, the arm 2 has a cover (covering member) 2b attached to the outer surface thereof. The cover 2b contacts the wall 1d when the arm 2 is tilted to the rear side of the housing 1 and stored in the arm storage groove 1e as described above. The shape as viewed from the back surface is determined and the mounting position is set so as to cover the entirety. In addition, as shown in FIGS. 2, 4 and 6, the lower part of the housing 1 is in an open direction with the arm 2 housed in the arm housing groove 1e, as shown in FIGS. A clip (locking piece) 2c is formed on the back surface.
[0041]
The light source 4 is constituted by a miniature bulb in this embodiment. As shown in FIGS. 5 (a) and 5 (b), a slightly concave but substantially flat reflecting plate 4a is formed on the front surface of the tip hanging portion 3a of the locking portion 3, and the front surface thereof is formed. The light source 4 is arranged at the center. As described above, when the arm 2 is housed in the arm housing groove 1e and the locking part 3 is housed in the locking part housing groove 1f, the light source 4 formed in the tip hanging portion 3a of the locking part 3 As shown in FIG. 1, it is exposed on the front side of the housing 1. On the front surface of the housing 1, around the light source 4 exposed in this way, as shown in FIGS. A reflection plate (reflection member) 4b is provided.
[0042]
Therefore, according to the portable lighting device of this embodiment, for example, the end of a gas or water pipe installed to a certain position in a partitioned space inside the wall of a building, or the end of an electric wire or a telephone line It can be effectively used when performing a work such as finding an external device and the like.
[0043]
In order to find an object inside the partition wall 13, for example, the end of the electric wire 14, an opening 11 for an outlet or the like located near the electric wire 14 is used, and the portable lighting of this embodiment is provided at the edge of the opening 11. The device can be locked to illuminate the interior. As shown in FIGS. 1 and 2, the locking of the arm 2 and the locking portion 3 respectively stored in the arm storing groove 1e and the locking portion storing groove 1f, as shown in FIGS. As shown in FIG. 7, the arm 2 is turned 180 degrees by the hinge 2a at the base of the arm 2 so as to extend linearly from the lower portion of the housing 1, and the housing 1 is turned upside down. As shown in the drawing, the insertion can be performed by inserting the tip hanging portion 3a of the upper inverted U-shaped locking portion 3 into the inside of the opening 11 and locking the intermediate portion to the edge of the opening 11. .
[0044]
In this state, when the power switch 1c is pressed down, the power is turned on, and the light source 4 disposed on the front surface of the tip hanging portion 3a of the locking portion 3 emits light. Are illuminated to make it easier to find the end of the electric wire 14 which is the object. Since the light source 4 does not have a condenser lens and has only a slightly concave reflecting plate 4a behind it as described above, it is shown in FIG. As described above, the light is diffused toward the front at a large angle, so that the front of the light source 4 can be sufficiently illuminated in a wide range in a relatively small range such as in the wall. Therefore, as described above, the end of the electric wire 14 located in the vicinity thereof easily enters the illumination range.
[0045]
Further, the light source 4 is disposed at a tip hanging portion 3a of the locking portion 3 which is locked to the edge of the opening portion 11, and the locking portion 3 and the arm 2 continuous with the locking portion 3 Since only a small portion of the opening 11 is occupied as described above, there is almost no obstruction when the operator looks into the inside from the opening 11. Therefore, the operator can satisfactorily look into the inside of the wall from the opening 11 and can easily find the end of the illuminated electric wire 14 as described above. In addition, since the light source 4 does not require an operator's hand to hold the light source 4 at the above position, for example, when performing an operation of pulling out the end of the electric wire 14 and connecting it to a corresponding appliance, both hands are used. It can be used freely and its work can be performed easily.
[0046]
Furthermore, in the portable lighting device of this embodiment, 1 d per wall is formed on the back of the housing 1, and a cover 2 b per wall is formed on the arm 2. As shown in FIGS. 1 and 2, the arm 2 is housed in the arm housing groove 1 e except for the case where the arm 2 is used by being locked to the opening 11 by the locking portion 3. At the same time, 1d per wall was covered with the cover 2b per wall, thereby preventing 1d per wall from being soiled during work at the work site. When the portable lighting device is locked in the opening portion 11 by the locking portion 3 as described above, the wall surface immediately below the opening portion 11 can be brought into contact with the wall. There is no problem of getting dirty by 1d .
[0047]
Also, when working in a dark interior corner of a building or other places where there is no lighting, but not necessarily narrow, the portable lighting device of this embodiment can be connected to the arm 2 as shown in FIGS. Is stored in the arm storage groove 1e, and the locking portion 3 is stored in the locking portion storage groove 1f. And the like, and the area near the hand in front thereof can be widely and well illuminated.
[0048]
In the above state, as shown in FIG. 1, the light source 4 is exposed on the front side of the housing 1, and the directivity of the light source 4 is enhanced by the auxiliary reflector 4b formed around the light source 4. As described above, when this portable lighting device is locked to the chest, the front of the device is illuminated well.
[0049]
Also in this case, since the hand is not used to hold the portable lighting device, the worker has both hands open and can work efficiently with both hands at a hand that is well illuminated. You can do it.
[0050]
In any case, when not in use, it goes without saying that the power switch 1c is turned off by operating the power switch 1c.
[0051]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to 1 portable illumination device of this invention, the inside can be illuminated favorably from the small opening part of the partition which divides closed space, minimizing the occupation of the opening space. In addition, both hands can be secured for the work without using the hands of the worker for the lighting.
[0052]
According to the portable lighting device of the second aspect of the present invention, it is possible to irradiate a wide irradiation range without excessive directivity, and it is not necessary to irradiate while moving this unlike conventional lighting fixtures. . In a narrow space such as a wall, even if the directivity is eliminated as described above, a necessary light amount can be easily secured.
[0053]
According to the portable lighting device of the third aspect of the present invention, the arm member and the inverted U-shaped locking member are stored in the arm member storing vertical groove or the inverted U-shaped locking member storing vertical groove, respectively. The lighting device can be folded compactly. Further, since the light source is exposed to the front side of the housing in this state, it is possible for the operator to irradiate the front of the body with the hand grasped or the lower part put in a breast pocket or the like.
[0054]
According to the portable lighting device of the fourth aspect of the present invention, the arm member and the inverted U-shaped locking member are respectively housed in the arm member storing vertical groove or the inverted U-shaped locking member storing vertical groove, so that the portable lighting device is provided. In a state where the device is compactly folded, the device can be easily locked to a chest pocket or the like of an operator by using the locking piece. Therefore, this makes it possible to illuminate the hand satisfactorily and perform the work easily.
[0055]
According to the portable lighting device of the fifth aspect of the present invention, the arm member and the inverted U-shaped locking member are housed in the arm member storing vertical groove or the inverted U-shaped locking member storing vertical groove, respectively. In a case where the lighting operation is performed after the lighting device is compactly folded, it is possible to appropriately narrow the irradiation range or the like by using a reflection member around the light source, so that the hand can be illuminated well.
[0056]
According to the portable lighting device of the sixth aspect of the present invention, since the back surface of the housing is usually covered with the covering member so as not to be soiled, the arm member is developed and the opening is formed by the inverted U-shaped locking member on the upper side. When the rear surface side of the housing abuts on the wall surface immediately below the opening when the housing is locked to the portion, there is no problem that the wall surface is soiled.
[Brief description of the drawings]
FIG. 1 is a perspective view of a portable lighting device in which an arm is housed in an arm housing groove of a housing as viewed from the front side.
FIG. 2 is a perspective view of a portable lighting device in which an arm is housed in an arm housing groove of a housing as viewed from the rear side.
FIG. 3 is a perspective view of the portable lighting device in which an arm is deployed, viewed from a light source side in a state where the portable lighting device is turned upside down.
FIG. 4 is a perspective view of the portable lighting device with the arms unfolded, viewed from the side opposite to the light source in an upside down state.
FIG. 5A is a perspective view of a light source and its surroundings in a portable lighting device in which an arm is housed in an arm housing groove. (B) is a sectional view taken along line AA of (a).
FIG. 6 is a central longitudinal sectional view of the portable lighting device in which an arm is housed in an arm housing groove of a housing, omitting an internal mechanism.
FIG. 7 is a cross-sectional view illustrating a state in which the inside of the wall is illuminated by the light source by locking the expanded arm locking portion of the portable lighting device which is turned upside down to the edge of the opening of the wall; FIG.
FIG. 8 is a sectional explanatory view of a conventional example showing a state in which the inside of a wall is illuminated from an opening using a penlight.
[Explanation of symbols]
1 housing
1a Lid
1b electrode
1c Power switch
1d per wall
1e Arm storage groove
1f Locking part storage groove
2 arm
2a hinge
2b Cover per wall
2c clip
3 Reverse U-shaped locking part
3a Tip side droop
4 Light source
4a Reflector
4b Auxiliary reflector
5 Lighting section
11 Opening
12 Penlight
13 Partition wall
14 Electric wire
