JP3700090B2

JP3700090B2 - lighting equipment

Info

Publication number: JP3700090B2
Application number: JP3040893A
Authority: JP
Inventors: 輝明武田; 昭男臼井
Original assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Current assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Priority date: 1993-02-19
Filing date: 1993-02-19
Publication date: 2005-09-28
Anticipated expiration: 2020-09-28
Also published as: JPH06243713A

Description

【０００１】
【産業上の利用分野】
本発明は、システム天井などに使用する天井埋込形の照明器具に係り、より詳しくは天井に架設した天井バーに対する取り付けや取り外しの作業性を向上させた照明器具に関するものである。
【０００２】
【従来の技術】
図１２、図１３は、例えば実公平４−６０９１号公報に開示された従来のシステム天井用の照明器具の一例を示す縦断面図及びその要部を示す斜視図である。１はシステム天井の天井板、２は天井から吊り下げて固定した天井枠、３は天井枠２の頭部、４は天井枠２に設けられた鍵溝である。
５は天井面に埋め込まれた照明器具、６は照明器具５の左右の側面を構成する一対のサイドチャンネル（図は一方のみ示す）で、ソケット７、反射板８その他照明器具に必要な各器具類を支持する。また、９はクッション材、１０はリード線である。
【０００３】
１１はサイドチャンネル６に取付けられた取付金具で、階段状に形成されており、斜面部１２、斜面部１２の下方に形成された平坦部１３、平坦部１３の先端部から下方に向かって形成された垂直部１４を有し、斜面部１２の内側面には熔接等により支持片１５が取付けられている。
１６は上端がサイドチャンネル６に弾力的に係合され、取付金具１１をサイドチャンネル６に取付けるための線状のバネで、その先端部は取付金具１１の裏面から表面に向かって挿通されて係合し、これによる弾力で回動させて取付金具１１をサイドチャンネル６に固定する。
【０００４】
１７は引掛具で、１８は天井枠２の鍵溝４の下方に嵌合するために引掛具１７の先端部に設けられた板状の引掛部、１９は引掛部１８を固定する軸、２０は引掛具１７のハンドルである。２１は引掛具１７の引掛部１８を通過させるため支持片１５に設けた通過穴、２２は引掛具１７の軸１８を滑動させる溝部で、通過穴２１に連続し、斜め上方に傾斜する傾斜溝部２３と、傾斜溝部２３に続く平坦溝部２４とからなっている。なお、２５は反射板８を天井枠２に載置し固定するための化粧ネジである。
【０００５】
次に、上記のように構成した照明器具の作用を説明する。照明器具５を天井枠２に取付けるには、まず照明器具５の取付金具１１を天井枠２の頭部３に載置する。このとき、取付金具１１の平坦部１３の下面が天井枠２の頭部３に載置され、垂直部１４の内側面が頭部３の外側面と対向し、支持片１５は天井枠２の内側面と対向する。
こうして垂直部１４と支持片１５によって、取付金具１１が天井枠２に対して横方向（図中、左右方向）のずれを防止する。
【０００６】
次いで、引掛具１７の引掛部１８を支持片１５の通過穴２１に挿入してハンドル２０を傾斜溝部２３から平坦溝部２４まで移動させる。この移動によって、引掛部１８の端部が天井枠２の鍵溝４の下方に嵌合して係合し、取付金具１１は天井枠２に係合する。
こうして取付金具１１と天井枠２とを結合すると、天井枠２や照明器具５が上下方向に振動しても、両者は一体となって振動し、取付金具１１、したがって照明器具５が天井枠２から浮き上がることはない。
最後に、反射板８を天井枠２に載置して化粧ネジ２５で固定し、取付金具１１や引掛具１７等を隠す。
照明器具５を天井枠２から取り外すには、まず化粧ネジ２５を緩めて反射板８を取り除き、次に引掛具１７を平坦溝部２４から通過穴２１まで移動させれば、引掛部１８と鍵溝４との係合が解除される。こうして、照明器具５を天井枠２から取り外す。
【０００７】
【発明が解決しようとする課題】
上記のように構成した従来の照明器具では、天井枠２に照明器具５を固定する際、取付金具１１に固着された支持片１５の通過穴２１に引掛具１７を挿入して移動させなければならないので、作業性が悪い。
また、取付金具１１や引掛具１７を隠すため反射板８を後から天井枠２に載置し化粧ネジ２５で固定しなければならないため、天井面での組立て作業に手間取る。
【０００８】
本発明は上記のような課題を解決するためになされたもので、取付金具の着脱作業や反射板の取付作業が容易かつ良好な照明器具を得ることを目的とする。
【０００９】
【課題を解決するための手段】
本発明に係る照明器具は、ウェブの両端部に上部フランジと下部フランジが設けられ、前記下部フランジが天井に固定された断面Ｉ字状の一対の天井バーと、平面部、該平面部の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バーの上部フランジに当接する水平部及び前記天井バーの上部フランジの外側に配設される係止片を有する立上り片、前記平面部に立上り片に近接して設けられた開口部、該開口部の近傍に設けられた押え片、及び前記平面部の中央部側に設けられた長穴からなる取付金具と、両端部に前記天井バーの下部フランジに当接するフランジを有し、中央部側に前記取付金具の長穴に対応した長穴が設けられ、ランプ、安定器、反射板等が収容されて上面に前記取付金具が固定された断面ほぼ鍋形状の器具本体と、
弾性材からなり、平面部、該平面部の一端をほぼ直角に折り曲げて先端部に前記天井バーの上部フランジに係止する引掛片が形成された垂下片を有するほぼＬ字状の一対の係止金具とからなり、
該係止金具の平面部を前記取付金具の押え片に挿入すると共に、前記係止金具の平面部の一端に位置する前記垂下片を前記取付金具の平面部に立ち上がり片に近接して設けられた開口部に挿入して該取付金具上に摺動可能に配設し、前記係止金具の平面部の他端に前記器具本体及び取付金具の長穴から挿入された解除ネジを螺入し、前記係止金具を天井面に取り付ける際には、平面部の他端を解除ネジで締め、一端を押え片で支持して、該係止金具の上下方向への移動を阻止した状態で、係止金具の垂下片及び引掛片が器具本体の両側面部方向にたわむようにして引掛片を天井バーの上部フランジに係止前記係止金具を天井面から取り外す際には、押え片を支点として平面部の他端の解除ネジをゆるめて該平面部の他端部を持ち上げ、前記係止金具の垂下片及び引掛片を取付金具の立上り片より離して引掛片を天井バーの上部フランジから外れるようにしたものである。
【００１０】
また本発明にかかる照明器具は、ウェブの両端部に上部フランジと下部フランジが設けられ、前記下部フランジが天井に固定された断面Ｉ字状の一対の天井バーと、平面部、該平面部の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バーの上部フランジに当接する水平部及び前記天井バーの上部フランジの外側に配設される係止片を有する立上り片、前記平面部に立上り片に近接して設けられた開口部、該開口部の近傍に設けられた押え片、及び前記平面部の中央部側に設けられたねじ穴からなる取付金具と、両端部に前記天井バーの下部フランジに当接するフランジを有し、中央部側に前記取付金具のねじ穴に対応し開口部が設けられ、ランプ、安定器、反射板等が収容されて上面に前記取付金具が固定された断面ほぼ鍋形状の器具本体と、弾性材からなり、平面部、該平面部の両端部を同方向にほぼ直角に折り曲げて先端部に前記天井バーの上部フランジに係止する引掛片が形成された垂下片を有するほぼコ字状の係止金具とからなり、該係止金具の平面部を前記取付金具の押え片に挿入すると共に、前記垂下片を前記取付金具の平面部に立ち上がり片に近接して設けられた開口部にそれぞれ挿入して該取付金具上に配設し、前記係止金具の平面部のほぼ中央部に前記取付金具のねじ穴に螺入された解除ネジを当接させ、前記係止金具を天井面に取り付ける際には、平面部のほぼ中央部を解除ネジをゆるめ、両端をそれぞれ押え片で支持して、該係止金具の上下方向への移動を阻止した状態で、係止金具のそれぞれの垂下片及び引掛片が器具本体の両側面部方向にたわむようにして引掛片を天井バーの上部フランジに係止させ、前記係止金具を天井面から取り外す際には、それぞれの押え片を支点として平面部のほぼ中央部の解除ネジを締めて該平面部の中央部付近を下面から突き上げてたわませ、前記係止金具の垂下片及び引掛片を取付金具の立上り片より離して引掛片を天井バーの上部フランジから外れるようにしたものである。
【００１１】
さらに本発明にかかる照明器具は、ウェブの両端部に上部フランジと下部フランジが設けられ、前記下部フランジが天井に固定された断面Ｉ字状の一対の天井バーと、平面部、該平面部の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バーの上部フランジに当接する水平部及び前記天井バーの上部フランジの外側に配設される係止片を有する立上り片、前記平面部に立上り片に近接して設けられた開口部、該開口部の近傍に設けられた押え片、及び前記平面部の中央部側に設けられた２つの長穴からなる取付金具と、
両端部に前記天井バーの下部フランジに当接するフランジを有し、中央部側に前記取付金具の長穴に対応した長穴が設けられ、ランプ、安定器、反射板等が収容されて上面に前記取付金具が固定された断面ほぼ鍋形状の器具本体と、平面部、該平面部の一端をほぼ直角に折り曲げて先端部に前記天井バーの上部フランジに係止する引掛片が形成された垂下片を有し、前記平面部の他端に前記垂下片と同方向に折り曲げられた操作片が設けられた一対の係止金具とからなり、該係止金具の平面部をそれぞれ前記取付金具の押え片に挿入すると共に、前記垂下片を前記取付金具の平面部に立ち上がり片に近接して設けられた開口部に挿入し、また前記操作片を取付金具及び器具本体の長穴に挿入して該取付金具上に摺動可能に配設し、前記両係止金具の操作片間にばねを介装し、前記係止金具を天井面に取り付ける際には、平面部の両端をそれぞれ押え片で支持し、係止金具の操作片をばねの弾性力によって外方に押圧して、該係止金具の上下方向への移動を阻止した状態で、係止金具のそれぞれの垂下片及び引掛片が器具本体の両側面部方向にたわむようにして引掛片を天井バーの上部フランジに係止させ、前記係止金具を天井面から取り外す際には、それぞれの押え片を支点として係止金具の操作片を内方に押圧してばねを圧縮させ、係止金具の垂下片及び引掛片を取付金具の立上り片より離して引掛片を天井バーの上部フランジから外れるようにしたものである。
【００１２】
さらにまた本発明にかかる照明器具は、ウェブの両端部に上部フランジと下部フランジが設けられ、前記下部フランジが天井に固定された断面Ｉ字状の一対の天井バーと、平面部、該平面部の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バーの上部フランジに当接する水平部及び前記天井バーの上部フランジの外側に配設される係止片を有する立上り片、前記平面部に立上り片に近接して設けられた開口部、該開口部の近傍に設けられた押え片、及び前記平面部の中央部側に設けられた長穴からなる取付金具と、両端部に前記天井バーの下部フランジに当接するフランジを有し、中央部側に前記取付金具の長穴に対応した長穴が設けられ、ランプ、安定器、反射板等が収容されて上面に前記取付金具が固定された断面ほぼ鍋形状の器具本体と、弾性材からなり、平面部、該平面部の両端部を同方向にほぼ直角に折り曲げて先端部に前記天井バーの上部フランジに係止する引掛片を形成された垂下片を設けると共に、ほぼ中央部を折曲げて形成した操作部により弾性が付与された係止金具からなり、該係止金具の平面部を前記取付金具の押え片にそれぞれ挿入すると共に、前記垂下片を前記取付金具の平面部に立ち上がり片に近接して設けられた開口部にそれぞれ挿入し、また操作部を取付金具及び器具本体の長穴に挿入して該取付金具上に摺動可能に配設し、前記係止金具を天井面に取り付ける際には、平面部の両端をそれぞれ押え片で支持し、係止金具の操作部を操作部の弾性力によって外方に押圧して、該係止金具の上下方向への移動を阻止した状態で、係止金具のそれぞれの垂下片及び引掛片が器具本体の両側面部方向にたわむようにして引掛片を天井バーの上部フランジに係止させ、前記係止金具を天井面から取り外す際には、それぞれの押え片を支点として係止金具の操作部を内方に押圧してたわませ、前記係止金具の垂下片及び引掛片を取付金具の立上り片より離して引掛片を天井バーの上部フランジから外れるようにしたものである。
【００１３】
【作用】
照明器具を取付けるには、これを天井内に押し込んで自然に落し込むと、係止金具の引掛け片が天井バーの係止部に係合する。また、照明器具を取り外すには、取付金具の下方から解除ネジを操作して、係止金具を天井バーの係止部から解除する。
【００１４】
また照明器具を取り外すには、解除ネジの先端で係止金具の中央部を下面から突き上げ係止金具をたわませて、係止金具を天井バーの係止部から解除する。
【００１５】
さらに照明器具を取り外すには、係止金具の操作片を内方に押圧してばねを圧縮させ、係止金具を天井バーの係止部から解除する。
【００１６】
さらにまた照明器具を取り外すには、係止金具の操作部を内方に押圧してたわませ、係止金具を天井バーの係止部から解除する。
【００１７】
【実施例】
実施例１
図１は本発明の第１の実施例の要部を示す縦断面図、図２は図１の作用説明図、図３、図４はそれぞれ図１の要部を示す斜視図である。２６は天井に架設された一対の天井バーで、断面Ｉ状をなし、天井から平行に吊り下げ固定する。２７は天井バー２６のウェブ２８の上部に形成された上部フランジ、２９は上部フランジ２７の左右下面部に形成された係止部、３０はウェブ２８の下部に形成された下部フランジである。
３１は照明器具、３２は断面が鍋形状で樋状をした照明器具本体（器具本体）
、３３，３４は器具本体３２を構成する側面反射部及び上面反射部である。
３５は側面反射部３３の下端部に形成されたフランジ部で、天井バー２６の下部フランジ３０に当接される。
【００１８】
器具本体３２の内部には、ランプ３６、安定器３７、断面Ｖ字型の反射板３８、その他照明器具に必要なソケット、電線等の各種部品類（図示せず）が取付けられている。なお、３９は反射板３８の両側端に設けられたフランジ部、４０は器具本体３２の上面反射部３４に取付けられた断面Ｌ字型の反射板押え片で、反射板３８のフランジ部３９を取り外し自在に支持する。
４１は器具本体３２の上面反射部３４に設けた長孔で、解除ネジ（後述する）の頭部が貫通する。
【００１９】
４２は照明器具３１を取付けるコ字型の取付金具で、両端部には平面部４３及び段差部を有し（後述する）、平面部４３は器具本体３２の上面外面部４４にネジ等の取付け具（図示せず）で固定されている。
４５は取付金具４２の両端部に平面部４３と直交して折曲げられた立上片、４６は立上片４５と直交（平面部４２と平行）して形成され天井バー２６の上部フランジ２７に当接される水平段差部、４７は水平段差部４６の端部から直交（立上片４５と平行）して下方向に折曲げられた係止片である。そして、立上片４５は天井バー２６のウェブ２８を上方向に垂直に立ち上げた状態で、また水平段差部４６は天井バー２６の上部フランジ２７に当接した状態で、さらに係止片４７は天井バー２６の上部フランジ２７の外側面４８に垂下した状態で、天井バー２６に当接される。
４９は係止金具（後述）を挿入するために取付金具４２の平面部４３の両端部に設けた開口部、５０は係止金具が上方向に浮き上がるのを防止するため開口部４９の両側に設けられた押え片である。なお、５１は解除ネジ（後述）を挿通させるために取付金具４２のほぼ中央部に設けた長孔で、器具本体３２に設けた長孔４１よりひとまわり小さい。
【００２０】
５２は照明器具３１、すなわち取付金具４２を天井バー２６に取付けるための係止金具で、断面Ｌ字型状をなす弾性材料によって形成され、取付金具４２の左右両側に別個に取り付けられる。５３は取付金具５２の平面部、５４は平面部５３の一端に平面部５３と直交して折曲げられた垂下片、５５は垂下片５４の先端部にＶ字状に折曲げて形成された引掛片である。そして、係止金具５２の平面部５３は取付金具４２の平面部４３上面に当接され、垂下片５４は取付金具４２の開口部４９を貫通して下方に垂下し、垂下片５４の先端部に設けられた引掛片５５は天井バー２６の係止部２９と係止する。
５６は器具本体３２に設けた長穴４１及び取付金具４２に設けた長孔５１に挿通して、係止金具５２の他端に設けたネジ穴５７に螺着した解除ネジで、取付金具４２と係止金具５２とを連結する。
【００２１】
次に、上記のように構成した第１の実施例の作用を説明する。なお、以下の説明では、照明器具３１の装着、脱着は図に示された部分のみ説明するが、図に記載のない部分についても同様である。まず、照明器具３１を天井面に取付ける操作は以下の通りである。反射板３８を装着してある器具本体３２を一対の天井バー２６の間から傾けた状態で押し上げ、これを天井内で水平にして引き下げる。こうすると、器具本体３２の両側面部３３の下端部に設けたフランジ３５が天井バー２６の下部フランジ３０に当接する。
また、取付金具４２の下端水平部４６は天井バー２６の上部フランジ２７に当接し、係止片４７は上部フランジ２７の外側面４８に垂下する。従って、器具本体３２の左右への移動が防止される。
【００２２】
また、上述のようにして取付金具４２の下端水平部４６が天井バー２６の頭部フランジ２７に当接されるときは、天井バー２６の係止部２９に係止金具５２の端部に設けた引掛片５５が係止する。
すなわち、取付金具４２を引き下げると、係止金具５２の平面部５３の一端は解除ネジ５６によって固定され、他端は押え片５０によって上方への移動が阻止されているので、係止金具５２の垂下片５４及び引掛片５５が器具本体３２の両側面部３３方向にたわみ、引掛片５５はこの状態のまま下降する。こうして、取付金具４２の下端水平部４６が天井バー２６の頭部フランジ２７に当接すると、係止金具５２の引掛片５５は天井バー２６の係止部２９に係止する。従って、器具本体３２の上方への浮き上がりが防止される。
【００２３】
次に、照明器具３１を天井面から取り外す操作は以下の通りである。まず、器具本体３２に取付けられた反射板３８を取り除く。反射板３８はそのフランジ部３９が器具本体３２の反射板押さえ片４０に係合しているので、フランジ部３９と反射板押え片４０との係合を解除すればよい。
ついで、係止金具５２の一端部に螺着している解除ネジ５６を、下方から押し上げるように回転させながらゆるめていく。こうすると、係止金具５２の他端部が押さえ片５０によって上方に浮き上がるのを防止されているため、図２に示すように、係止金具５２は傾斜して引掛片５５が天井バー２６の係止部２９から外れる。
こうして、解除ネジ５６を取付金具４２の長穴５１の端まで移動させると、係止金具５２の垂下片５４と引掛片５５は図２の破線で示す位置まで移動し、天井バー２６の係止部２９から完全に外れる。
この状態で、器具本体３２を天井内に押し込みながら傾斜させて引き下げれば、器具本体３２を天井面から取り外すことができる。
【００２４】
実施例２
図５は本発明の第２の実施例の要部を示す縦断面図、図６は図５の作用説明図、図７は図５の要部を示す斜視図である。５２は取付け金具４２を天井バー２６に取付けるための係止金具で、第１の実施例（図１〜図４）で示した左右別個の係止金具を一体構造にしたものであり、断面ほぼコ字型に形成されている。
第２の実施例では、１個の係止金具５２の平面部５３を取付金具４２の平面部４３上面に載置し、係止金具５２の垂下片５４，５４を取付金具５２の開口部４９，４９から下方に貫通させ、引掛片５５，５５を天井バー２６，２６の頭部フランジ２７，２７に設けられた係止部２９，２９に係止する。
５６は取付金具４２の中央部に螺着された解除ネジで、その先端部は係止金具５２の平面部５３の下面に当接する。
【００２５】
次に、上記のように構成した第２の実施例の作用を説明する。照明器具３１を天井バー２６，２６に当接する動作は、第１の実施例に示した場合と同様である。
照明器具３１を天井面から取り外す操作は以下の通りである。まず、器具本体３２に取付けられた反射板３８を取り除く。次に、係止金具５２の係止を解除するには、取付金具４２の中央部に螺着された解除ネジ５６を下方から押し上げるようにして回転させ、締め付けていく。このとき係止金具５２の両端部は、取付金具４２の両端部に設けられた押え片５０，５０によって上方への浮き上がりを防止されている。このため、図６に示すように、係止金具５２の中央部だけが浮き上がり、引掛片５５，５５は天井バー２６，２６の係止部２９，２９から外れる。
この状態で、器具本体３２を天井内に押し込みながら傾斜させて引き下げれば、器具本体３２を天井面から取り外すことができる。
【００２６】
実施例３
図８は本発明の第３の実施例の要部を示す縦断面図、図９は図８の作用説明図である。５２，５２は取付金具４２を天井バー２６に取付けるための係止金具で、第１の実施例（図１〜図４）で示した左右の別個の係止金具をバネを介して一対に構成したものである。５８は引掛片５５と反対側の取付金具４２の端部に設けられた操作片で、垂下片５４と平行で同方向に垂下する。５９はバネ係止片で、操作片５８の中央部で各操作片５６，５６が向い合う方向に操作片５６と直交して設けられている。６０は操作片５８，５８の間に介装されたコイルバネで、バネ係止片５９，５９に装着されている。
なお、６１，６１は取付金具４２の中央部に設けられた長方形の孔部、６２は器具本体３２の上面部３４に設けられた長方形の孔部である。
【００２７】
第３の実施例では、一対の係止金具５２，５２を取付金具４２の平面部４３上面に当接し、取付金具４２の両端部に設けられた開口部４９，４９から、垂下片５４，５４を下方に垂下させ、引掛片５５，５５を天井バー２６，２６の上部フランジ２７，２７の係止部２９，２９に係止する。また、操作片５８，５８を取付金具４２の孔部６１と器具本体３２の孔部６２に挿通する。こうして、一対の係止金具５２，５２は押え片５０，５０によって浮き上がりを防止された状態で、コイルバネ６０の弾性によって天井バー２６，２６方向に付勢される。
【００２８】
次に、上記のように構成した第３の実施例の作用を説明する。照明器具３１を天井バー２６，２６に当接する動作は、第１の実施例に示した場合とほぼ同様である。ただし、取付金具４２の下端水平部４６，４６が天井バー２６，２６の上部フランジ２７，２７に当接するとき、係止金具５２，５２は取付金具４２の押え片５０，５０によって上方向への移動を抑制されているので、引掛片５５，５５が天井バー２６，２６の上部フランジ２７，２７の内側面によりコイルバネ６０の方向に移動し、このためコイルバネ６０が圧縮される。次いで、取付金具４２の下端水平部４６，４６が天井バー２６，２６の上部フランジ２７，２７に載置されると同時に、係止金具５２の引掛片５５，５５はコイルバネ６０によってコイルバネ６０と反対の方向に付勢されて、天井バー２６，２６の係止部２９，２９に引掛かる。こうして器具本体３２が上方に浮き上がるのを防止する。
【００２９】
次に係止金具５２を取り外すには、一対の係止金具５２の操作片５８，５８を指でつまんで押圧する。こうすると、操作片５８，５８間に設けられたコイルバネ６０が圧縮されて、図９に示すように、一対の係止金具５２は器具本体３２の中央部方向に移動し、引掛片５５，５５が天井バー２６，２６の係止部２９，２９から外れる。このとき、係止金具５２は押え片５０，５０によって上方向への浮き上がりを抑制されている。こうして、器具本体３２を天井バー２６，２６から取り外すことができる。
【００３０】
実施例４
図１０は本発明の第４の実施例の要部を示す縦断面図、図１１は図１０の作用説明図である。５２は取付金具４２を天井バー２６，２６に取付けるための係止金具で、第１の実施例（図１〜図４）で示した左右の別個の係止金具を弾性体材料を使用して一体に構成する。６３は係止金具５２の中央部に設けられたＶ字型の操作部で、内方に押圧すると係止金具５２がたわむ。
【００３１】
第４の実施例では、一体に構成された係止金具５２の平面部５３を取付金具４２の平面部４３の上面に載置し、Ｖ字型の操作部６３を取付金具４２の孔部６１と器具本体３２の孔部６２に挿通し、垂下片５４，５４を取付金具４２の開口部４９，４９から垂下させ、引掛片５５，５５を天井バー２６，２６の係止部２９，２９に係止する。こうして係止金具５２は、押え片５０，５０によって浮き上がりを防止された状態のまま、操作部６３の弾性によって天井バー２６，２６方向に付勢される。
【００３２】
次に、上記のように構成した第４の実施例の作用を説明する。照明器具３１を天井バー２６，２６に載置する動作は、第３の実施例に示した場合とほぼ同様である。ただし、係止金具５２に設けられたコイルバネ（図８、図９）が圧縮されるのではなくて、Ｖ字型の操作部６３が圧縮される。
【００３３】
係止金具５２を取り外すには、まず係止金具５２の操作部６３をを指でつまんで押圧する。こうすると、図１１に示すように係止金具５２の両端部は各々器具本体３２の中央部方向に移動し、引掛片５５，５５が天井バー２６，２６の係止部２９，２９から外れる。このとき、係止金具５２は取付金具４２の押え片５０，５０によって上方向への浮き上がりを抑制される。こうして、器具本体３２を天井バー２６，２６から取り外すことができる。
【００３４】
【発明の効果】
以上の説明から明らかなように、本発明の照明器具によれば、天井バーに照明器具を取付けるときは、組み立てを完成した状態の照明器具をそのまま天井内に押し込みこれを自然に落とし込むだけで係止金具の引掛片が天井バーの係止部に係合するので、照明器具の天井作業が極めて容易になる。
また、照明器具の係止金具を解除するときは、照明器具内部の反射板を取り出し、器具本体上面の解除ネジをゆるめる（実施例１）、解除ネジを締め付ける（実施例２）、係止金具の操作片を指でつまんで押圧する（実施例３）、係止金具の操作部を指でつまんで押圧する（実施例４）だけで係止金具の引掛片が天井バーの係止部から解除されるので、照明器具の取り外し作業も極めて容易である。
【図面の簡単な説明】
【図１】本発明の第１の実施例の要部を示す縦断面図である。
【図２】図１の作用説明図である。
【図３】図１の要部を示す斜視図である。
【図４】図１の要部を示す斜視図である。
【図５】本発明の第２の実施例の要部を示す縦断面図である。
【図６】図５の作用説明図である。
【図７】図５の要部を示す斜視図である。
【図８】本発明の第３の実施例の要部を示す縦断面図である。
【図９】図８の作用説明図である。
【図１０】本発明の第４の実施例の要部を示す縦断面図である。
【図１１】図１０の作用説明図である。
【図１２】従来の照明器具の一例を示す縦断面図である。
【図１３】図１２の要部を示す斜視図である。
【符号の説明】
２６天井バー
２７上部フランジ
２８ウェブ
３０下部フランジ
３２器具本体
３５フランジ部
３６ランプ
３８反射板
４１，５１長穴
４２取付金具
４３平面部
４５立上片
４６水平段差部
４７係止片
４９開口部
５０押え片
５２係止金具
５３平面部
５４垂下片
５５引掛片
５６解除ネジ
５８操作片
６０コイルバネ
６１，６２長方形の孔部
６３操作部[0001]
[Industrial application fields]
The present invention relates to a ceiling-embedded lighting fixture used for a system ceiling or the like, and more particularly to a lighting fixture having improved workability for attachment to and removal from a ceiling bar installed on the ceiling.
[0002]
[Prior art]
  FIG. 12 and FIG.FairnessIt is the longitudinal cross-sectional view which shows an example of the conventional lighting fixture for system ceilings disclosed by 4-6091 gazette, and the perspective view which shows the principal part. Reference numeral 1 denotes a ceiling plate of the system ceiling, 2 a ceiling frame suspended from the ceiling and fixed, 3 a head of the ceiling frame 2, and 4 a keyway provided in the ceiling frame 2.
  5 is a lighting fixture embedded in the ceiling surface, 6 is a pair of side channels (only one is shown) constituting the left and right side surfaces of the lighting fixture 5, socket 7, reflector 8, and other appliances necessary for the lighting fixture Support the kind. Further, 9 is a cushion material, and 10 is a lead wire.
[0003]
Reference numeral 11 denotes a mounting bracket attached to the side channel 6, which is formed in a step shape, and is formed from the slope portion 12, the flat portion 13 formed below the slope portion 12, and downward from the tip portion of the flat portion 13. A support piece 15 is attached to the inner side surface of the slope portion 12 by welding or the like.
Reference numeral 16 denotes a linear spring whose upper end is elastically engaged with the side channel 6 and for attaching the mounting bracket 11 to the side channel 6, and its tip is inserted from the back surface of the mounting bracket 11 toward the surface. Then, the mounting bracket 11 is fixed to the side channel 6 by being rotated by the elasticity of this.
[0004]
17 is a hook, 18 is a plate-like hook provided at the tip of the hook 17 for fitting under the keyway 4 of the ceiling frame 2, 19 is a shaft for fixing the hook 18, 20 Is a handle of the hook 17. Reference numeral 21 denotes a passage hole provided in the support piece 15 for allowing the hook portion 18 of the hook 17 to pass therethrough, and 22 denotes a groove portion for sliding the shaft 18 of the hook member 17, which is continuous with the passage hole 21 and is inclined obliquely upward. 23 and a flat groove portion 24 following the inclined groove portion 23. Reference numeral 25 denotes a decorative screw for mounting and fixing the reflecting plate 8 on the ceiling frame 2.
[0005]
Next, the operation of the lighting fixture configured as described above will be described. In order to attach the lighting fixture 5 to the ceiling frame 2, first, the mounting bracket 11 of the lighting fixture 5 is placed on the head 3 of the ceiling frame 2. At this time, the lower surface of the flat portion 13 of the mounting bracket 11 is placed on the head 3 of the ceiling frame 2, the inner surface of the vertical portion 14 faces the outer surface of the head 3, and the support piece 15 is attached to the ceiling frame 2. Opposite the inner surface.
Thus, the vertical portion 14 and the support piece 15 prevent the mounting bracket 11 from shifting in the lateral direction (left-right direction in the figure) with respect to the ceiling frame 2.
[0006]
Next, the hook portion 18 of the hook 17 is inserted into the passage hole 21 of the support piece 15 to move the handle 20 from the inclined groove portion 23 to the flat groove portion 24. By this movement, the end portion of the hooking portion 18 is fitted and engaged below the keyway 4 of the ceiling frame 2, and the mounting bracket 11 is engaged with the ceiling frame 2.
When the mounting bracket 11 and the ceiling frame 2 are combined in this way, even if the ceiling frame 2 and the lighting fixture 5 vibrate in the vertical direction, they both vibrate together, and the mounting bracket 11 and thus the lighting fixture 5 are connected to the ceiling frame 2. Will not float from.
Finally, the reflecting plate 8 is placed on the ceiling frame 2 and fixed with the decorative screw 25 to hide the mounting bracket 11 and the hook 17.
To remove the lighting fixture 5 from the ceiling frame 2, first loosen the decorative screw 25 to remove the reflector 8, and then move the hooking tool 17 from the flat groove 24 to the passage hole 21. 4 is released. In this way, the lighting fixture 5 is removed from the ceiling frame 2.
[0007]
[Problems to be solved by the invention]
In the conventional lighting fixture configured as described above, when the lighting fixture 5 is fixed to the ceiling frame 2, the hooking tool 17 must be inserted into the passage hole 21 of the support piece 15 fixed to the mounting bracket 11 and moved. Because it does not become, workability is bad.
Further, in order to hide the mounting bracket 11 and the hook 17, it is necessary to place the reflector 8 on the ceiling frame 2 later and fix it with the decorative screws 25, so that it takes time to assemble the ceiling surface.
[0008]
The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a lighting apparatus that is easy and good for attaching / detaching a mounting bracket and attaching a reflector.
[0009]
[Means for Solving the Problems]
  The lighting apparatus according to the present invention includes a pair of ceiling bars having an I-shaped cross section in which an upper flange and a lower flange are provided at both ends of a web, and the lower flange is fixed to a ceiling, a plane portion, and both ends of the plane portion. A rising portion having a horizontal portion that is bent substantially at right angles in the same direction, and a locking portion disposed on an outer side of the upper flange of the ceiling bar at the tip, and the flat portion And an attachment provided in the vicinity of the rising piece, a holding piece provided in the vicinity of the opening, and a mounting bracket provided on the center side of the flat part, and the ceiling at both ends. Has a flange that abuts the lower flange of the bar, has a long hole corresponding to the long hole of the mounting bracket on the center side, accommodates lamps, ballasts, reflectors, etc., and the mounting bracket is fixed on the upper surface A cross-sectional, almost pot-shaped instrument book And,
  A pair of substantially L-shaped engagement members, which are made of an elastic material, and have a flat piece and a hanging piece formed by bending one end of the flat piece at a substantially right angle and hooking the tip of the flat piece to the upper flange of the ceiling bar. Consisting of fasteners,
  The flat portion of the locking bracket is inserted into the holding piece of the mounting bracket, and the hanging piece located at one end of the flat portion of the locking bracket is provided on the flat portion of the mounting bracket in proximity to the rising piece. Inserted into the opening and slidably disposed on the mounting bracket, and screwed into the other end of the flat portion of the locking bracket is a release screw inserted from the elongated hole of the instrument body and the mounting bracket.When attaching the locking bracket to the ceiling surface, tighten the other end of the flat portion with a release screw and support one end with a holding piece to prevent the locking bracket from moving in the vertical direction. When the removal piece is locked from the ceiling surface, the holding piece is used as a fulcrum. Loosen the release screw at the other end of the flat part, lift the other end of the flat part, and separate the hanging piece and the hook piece of the locking bracket from the rising piece of the mounting bracket to disengage the hook piece from the upper flange of the ceiling bar It is what I did.
[0010]
  Further, the lighting apparatus according to the present invention is provided with an upper flange and a lower flange at both ends of the web, a pair of I-shaped ceiling bars in which the lower flange is fixed to the ceiling, a plane portion, and the plane portion. The rising piece having both ends bent in a substantially right angle in the same direction and having a horizontal part contacting the upper flange of the ceiling bar at the tip part and a locking piece disposed outside the upper flange of the ceiling bar, the plane An opening provided in the vicinity of the rising piece, a holding piece provided in the vicinity of the opening, and a mounting bracket comprising a screw hole provided in the center of the flat part, It has a flange that abuts the lower flange of the ceiling bar, an opening is provided in the center portion corresponding to the screw hole of the mounting bracket, and a lamp, a stabilizer, a reflector, etc. are accommodated, and the mounting bracket is mounted on the upper surface. Fixed section almost pan-shaped A hanging piece formed of an elastic material, a flat piece, and a hook piece formed by bending both ends of the flat piece at substantially right angles in the same direction and engaging the upper flange of the ceiling bar at the tip. And has a substantially U-shaped locking bracket having a flat portion of the locking bracket inserted into the holding piece of the mounting bracket, and the hanging piece provided on the flat portion of the mounting bracket in proximity to the rising piece. Each of the openings is inserted into the opening and disposed on the mounting bracket, and a release screw screwed into a screw hole of the mounting bracket is brought into contact with a substantially central portion of the flat surface of the locking bracket.When attaching the locking bracket to the ceiling surface, loosen the release screw at the substantially central portion of the flat surface, and support both ends with the presser pieces to prevent the vertical movement of the locking bracket. Then, when the hanging pieces are hooked to the upper flange of the ceiling bar so that the respective hanging pieces and the hooking pieces of the fittings are bent in the direction of the both side surfaces of the instrument body, when removing the locking pieces from the ceiling surface, Using each presser piece as a fulcrum, tighten the release screw at the substantially central part of the flat part and squeeze the vicinity of the central part of the flat part from the lower surface. The hook piece is separated from the upper flange of the ceiling bar apart from the piece.
[0011]
  Furthermore, the luminaire according to the present invention is provided with an upper flange and a lower flange at both ends of the web, and a pair of I-shaped ceiling bars in which the lower flange is fixed to the ceiling, a plane portion, and the plane portion. The rising piece having both ends bent in a substantially right angle in the same direction and having a horizontal part contacting the upper flange of the ceiling bar at the tip part and a locking piece disposed outside the upper flange of the ceiling bar, the plane An opening provided in the vicinity of the rising piece, a holding piece provided in the vicinity of the opening, and a mounting bracket comprising two elongated holes provided in the center of the flat part,
  There are flanges that contact the lower flange of the ceiling bar at both ends, and a long hole corresponding to the long hole of the mounting bracket is provided on the center side, and a lamp, ballast, reflector, etc. are accommodated on the upper surface. An appliance body having a substantially pan-shaped cross section to which the mounting bracket is fixed, a flat portion, and a hanging piece formed by hooking one end of the flat portion at a substantially right angle to be engaged with the upper flange of the ceiling bar at the tip portion And a pair of locking metal fittings provided with an operation piece bent in the same direction as the hanging piece at the other end of the flat surface portion, and the flat surface portions of the locking metal fittings are respectively connected to the mounting metal fittings. Inserting into the holding piece, inserting the hanging piece into the opening provided near the rising piece on the flat surface of the mounting bracket, and inserting the operating piece into the mounting bracket and the elongated hole of the instrument body. The slidably disposed on the mounting bracket, the both locking A spring interposed in the ingredients of the operation piecesWhen attaching the locking bracket to the ceiling surface, both ends of the flat portion are supported by pressing pieces, and the operation piece of the locking bracket is pressed outward by the elastic force of the spring, In the state where the vertical movement is prevented, the hanging pieces are hooked to the upper flange of the ceiling bar so that the hanging pieces and the hooking pieces of the locking piece bend in the direction of the both side surfaces of the fixture body, When removing the bracket from the ceiling surface, the operating piece of the locking bracket is pressed inward with each presser piece as a fulcrum to compress the spring, and the hanging piece and the hooking piece of the locking bracket are removed from the rising piece of the mounting bracket. The hook piece is separated from the upper flange of the ceiling bar.
[0012]
  Furthermore, the lighting fixture according to the present invention is provided with an upper flange and a lower flange at both ends of the web, a pair of I-shaped ceiling bars in which the lower flange is fixed to the ceiling, a plane portion, and the plane portion. The rising piece has a horizontal part that is bent at substantially right angles in the same direction at the end, a horizontal part that contacts the upper flange of the ceiling bar at the tip, and a locking piece that is disposed outside the upper flange of the ceiling bar, An opening provided near the rising piece in the flat part, a holding piece provided in the vicinity of the opening, and a mounting bracket comprising a long hole provided in the central part of the flat part, It has a flange that abuts the lower flange of the ceiling bar, and is provided with a long hole corresponding to the long hole of the mounting bracket on the center side, and accommodates a lamp, a stabilizer, a reflector, etc. Is fixed cross section almost pan And a hanging piece which is made of an elastic material and has a flat portion and a hook piece which is bent at substantially right angles in the same direction in the same direction and is engaged with the upper flange of the ceiling bar. And is provided with a latch fitting provided with elasticity by an operation portion formed by bending the substantially central portion thereof, and the plane portion of the latch fitting is inserted into the holding piece of the mounting bracket, respectively, and the hanging piece Is inserted into the opening provided in the flat part of the mounting bracket in the vicinity of the rising piece, and the operation section is inserted into the mounting bracket and the elongated hole of the instrument body so as to be slidable on the mounting bracket. InstallationWhen attaching the locking bracket to the ceiling surface, both ends of the flat portion are supported by pressing pieces, and the operation portion of the locking bracket is pressed outward by the elastic force of the operation portion. In the state where the vertical movement of the locking bracket is prevented, the hanging pieces are hooked to the upper flange of the ceiling bar so that the hanging pieces and the hooking pieces of the locking bracket bend in the direction of the both side surfaces of the fixture body. When removing the metal fittings from the ceiling surface, each holding piece is used as a fulcrum and the operation part of the metal fitting is pressed inward to bend, and the hanging piece and the hooking piece of the metal fitting are connected to the rising piece of the metal fitting. The hook piece is separated further from the upper flange of the ceiling bar.
[0013]
[Action]
To attach the lighting fixture, when it is pushed into the ceiling and dropped naturally, the hooking piece of the locking fitting engages with the locking portion of the ceiling bar. Moreover, in order to remove the lighting fixture, the release screw is operated from below the attachment fitting, and the engagement fitting is released from the engagement portion of the ceiling bar.
[0014]
To remove the luminaire, the center of the locking metal is pushed up from the lower surface with the tip of the release screw, the locking metal is bent, and the locking metal is released from the locking part of the ceiling bar.
[0015]
Further, in order to remove the luminaire, the operating piece of the locking fitting is pressed inward to compress the spring, and the locking fitting is released from the locking portion of the ceiling bar.
[0016]
Furthermore, in order to remove the lighting fixture, the operation part of the locking metal is pressed inward to bend, and the locking metal is released from the locking part of the ceiling bar.
[0017]
【Example】
Example 1
FIG. 1 is a longitudinal sectional view showing the main part of the first embodiment of the present invention, FIG. 2 is an explanatory view of the operation of FIG. 1, and FIGS. 3 and 4 are perspective views showing the main part of FIG. A pair of ceiling bars 26 are installed on the ceiling and have an I-shaped cross section and are suspended and fixed in parallel from the ceiling. Reference numeral 27 denotes an upper flange formed on the upper portion of the web 28 of the ceiling bar 26, 29 denotes a locking portion formed on the left and right lower surface portions of the upper flange 27, and 30 denotes a lower flange formed on the lower portion of the web 28.
31 is a luminaire, 32 is a bowl-shaped luminaire main body (equipment main body)
, 33 and 34 are a side reflection portion and an upper surface reflection portion constituting the instrument main body 32.
Reference numeral 35 denotes a flange portion formed at the lower end portion of the side reflecting portion 33, and is brought into contact with the lower flange 30 of the ceiling bar 26.
[0018]
Inside the appliance main body 32, a lamp 36, a ballast 37, a reflector 38 having a V-shaped cross section, and other parts (not shown) such as sockets and electric wires necessary for the lighting fixture are attached. In addition, 39 is a flange part provided on both side ends of the reflector 38, 40 is an L-shaped reflector holding piece attached to the upper surface reflector 34 of the instrument main body 32, and the flange 39 of the reflector 38 is provided with the flange 39. Support removably.
41 is a long hole provided in the upper surface reflection part 34 of the instrument main body 32, and the head of a release screw (described later) passes therethrough.
[0019]
Reference numeral 42 denotes a U-shaped mounting bracket for attaching the lighting fixture 31, which has a flat portion 43 and a stepped portion at both ends (described later). The flat portion 43 is attached to the upper surface outer surface portion 44 of the fixture body 32 with screws or the like. It is fixed with a tool (not shown).
Reference numeral 45 denotes an upright piece bent at both ends of the mounting bracket 42 at right angles to the flat portion 43, and 46 is formed at right angles to the upright piece 45 (parallel to the flat portion 42), and the upper flange 27 of the ceiling bar 26. The horizontal stepped portion 47 abutted on is a locking piece which is bent downward from the end of the horizontal stepped portion 46 at right angles (parallel to the rising piece 45). The rising piece 45 is in a state where the web 28 of the ceiling bar 26 is vertically raised vertically, and the horizontal stepped portion 46 is in contact with the upper flange 27 of the ceiling bar 26, and further the locking piece 47. Is in contact with the ceiling bar 26 in a state of hanging from the outer surface 48 of the upper flange 27 of the ceiling bar 26.
49 is an opening provided at both ends of the flat portion 43 of the mounting bracket 42 for inserting a locking bracket (described later), and 50 is provided on both sides of the opening 49 to prevent the locking bracket from floating upward. It is a presser piece provided. In addition, 51 is a long hole provided in a substantially central portion of the mounting bracket 42 for inserting a release screw (described later), and is slightly smaller than the long hole 41 provided in the instrument main body 32.
[0020]
Reference numeral 52 denotes a fixture for attaching the lighting fixture 31, that is, the mounting bracket 42 to the ceiling bar 26, which is formed of an elastic material having an L-shaped cross section, and is separately mounted on the left and right sides of the mounting bracket 42. 53 is a flat portion of the mounting bracket 52, 54 is a hanging piece bent at one end of the flat portion 53 at right angles to the flat portion 53, and 55 is formed by bending the tip of the hanging piece 54 into a V shape. It is a hook piece. The flat surface portion 53 of the locking metal fitting 52 is brought into contact with the upper surface of the flat surface portion 43 of the attachment metal fitting 42, and the hanging piece 54 hangs downward through the opening 49 of the attachment metal fitting 42. The hook piece 55 provided on the hook is locked with the locking portion 29 of the ceiling bar 26.
A release screw 56 is inserted into the elongated hole 41 provided in the instrument main body 32 and the elongated hole 51 provided in the mounting bracket 42 and screwed into the screw hole 57 provided at the other end of the locking bracket 52. And the locking metal fitting 52 are connected.
[0021]
  Next, the operation of the first embodiment configured as described above will be described. In the following description, the mounting and removal of the lighting fixture 31 will be described only for the parts shown in the figure, but the same applies to the parts not shown in the figure. First, the operation of attaching the lighting fixture 31 to the ceiling surface is as follows. The instrument body 32 on which the reflector plate 38 is mounted is pushed up while being tilted from between the pair of ceiling bars 26, and is pulled down horizontally in the ceiling. In this way, the flange 35 provided at the lower end portion of the side surface portion 33 of the instrument main body 32 comes into contact with the lower flange 30 of the ceiling bar 26.
  In addition, the lower end horizontal portion 46 of the mounting bracket 42 isUpper flange27, the locking piece 47 hangs down on the outer surface 48 of the upper flange 27. Therefore, the movement of the instrument body 32 to the left and right is prevented.
[0022]
Further, when the lower end horizontal portion 46 of the mounting bracket 42 is brought into contact with the head flange 27 of the ceiling bar 26 as described above, the locking portion 29 of the ceiling bar 26 is provided at the end of the locking bracket 52. The hook 55 is locked.
That is, when the mounting bracket 42 is pulled down, one end of the flat portion 53 of the locking bracket 52 is fixed by the release screw 56 and the other end is prevented from moving upward by the presser piece 50. The hanging piece 54 and the hooking piece 55 bend in the direction of the both side surfaces 33 of the instrument main body 32, and the hooking piece 55 is lowered in this state. In this way, when the lower end horizontal portion 46 of the mounting bracket 42 contacts the head flange 27 of the ceiling bar 26, the hook piece 55 of the locking bracket 52 is locked to the locking portion 29 of the ceiling bar 26. Accordingly, the upward lifting of the instrument body 32 is prevented.
[0023]
Next, the operation of removing the lighting fixture 31 from the ceiling surface is as follows. First, the reflector 38 attached to the instrument body 32 is removed. Since the flange portion 39 of the reflection plate 38 is engaged with the reflection plate pressing piece 40 of the instrument main body 32, the engagement between the flange portion 39 and the reflection plate holding piece 40 may be released.
Next, the release screw 56 screwed to one end portion of the locking metal fitting 52 is loosened while being rotated so as to push up from below. In this way, the other end portion of the locking fitting 52 is prevented from being lifted upward by the pressing piece 50, so that the locking fitting 52 is inclined and the hooking piece 55 is attached to the ceiling bar 26 as shown in FIG. Disengage from the locking portion 29.
Thus, when the release screw 56 is moved to the end of the long hole 51 of the mounting bracket 42, the hanging piece 54 and the hooking piece 55 of the locking bracket 52 are moved to the positions indicated by the broken lines in FIG. It is completely removed from the part 29.
In this state, if the instrument body 32 is tilted and pushed down while being pushed into the ceiling, the instrument body 32 can be removed from the ceiling surface.
[0024]
Example 2
FIG. 5 is a longitudinal sectional view showing the main part of the second embodiment of the present invention, FIG. 6 is an explanatory view of the operation of FIG. 5, and FIG. 7 is a perspective view showing the main part of FIG. Reference numeral 52 denotes a locking bracket for mounting the mounting bracket 42 to the ceiling bar 26, which is an integral structure of the left and right separate locking brackets shown in the first embodiment (FIGS. 1 to 4). It is formed in a U shape.
In the second embodiment, the flat surface 53 of one locking metal 52 is placed on the upper surface of the flat surface 43 of the mounting metal 42, and the hanging pieces 54, 54 of the locking metal 52 are connected to the opening 49 of the mounting metal 52. 49, the hook pieces 55, 55 are locked to locking portions 29, 29 provided on the head flanges 27, 27 of the ceiling bars 26, 26.
A release screw 56 is screwed to the central portion of the mounting bracket 42, and a tip portion thereof abuts against a lower surface of the flat portion 53 of the locking bracket 52.
[0025]
Next, the operation of the second embodiment configured as described above will be described. The operation of bringing the lighting fixture 31 into contact with the ceiling bars 26, 26 is the same as that shown in the first embodiment.
The operation of removing the lighting fixture 31 from the ceiling surface is as follows. First, the reflector 38 attached to the instrument body 32 is removed. Next, in order to release the locking of the locking metal fitting 52, the release screw 56 screwed to the central portion of the attachment metal fitting 42 is rotated by being pushed up from below and tightened. At this time, both end portions of the locking metal fitting 52 are prevented from being lifted upward by the presser pieces 50, 50 provided at both end portions of the attachment metal fitting 42. For this reason, as shown in FIG. 6, only the central portion of the locking metal fitting 52 is lifted, and the hooking pieces 55 and 55 are disengaged from the locking portions 29 and 29 of the ceiling bars 26 and 26.
In this state, if the instrument body 32 is tilted and pushed down while being pushed into the ceiling, the instrument body 32 can be removed from the ceiling surface.
[0026]
Example 3
FIG. 8 is a longitudinal sectional view showing the main part of the third embodiment of the present invention, and FIG. 9 is an explanatory view of the operation of FIG. Reference numerals 52 and 52 denote locking brackets for mounting the mounting bracket 42 to the ceiling bar 26. The left and right separate locking brackets shown in the first embodiment (FIGS. 1 to 4) are paired via springs. It is a thing. An operation piece 58 is provided at the end of the mounting bracket 42 on the side opposite to the hooking piece 55 and hangs down in the same direction in parallel with the hanging piece 54. Reference numeral 59 denotes a spring locking piece, which is provided at a central portion of the operation piece 58 and orthogonal to the operation piece 56 in a direction in which the operation pieces 56 and 56 face each other. A coil spring 60 is interposed between the operation pieces 58 and 58 and is attached to the spring locking pieces 59 and 59.
In addition, 61 and 61 are rectangular holes provided in the central portion of the mounting bracket 42, and 62 is a rectangular hole provided in the upper surface portion 34 of the instrument main body 32.
[0027]
In the third embodiment, the pair of locking metal fittings 52, 52 are brought into contact with the upper surface of the flat portion 43 of the attachment fitting 42, and the hanging pieces 54, 54 are formed from the openings 49, 49 provided at both ends of the attachment fitting 42. Is suspended downward, and the hooking pieces 55, 55 are locked to the locking portions 29, 29 of the upper flanges 27, 27 of the ceiling bars 26, 26. Further, the operation pieces 58 and 58 are inserted through the hole 61 of the mounting bracket 42 and the hole 62 of the instrument main body 32. In this way, the pair of locking fittings 52, 52 are urged toward the ceiling bars 26, 26 by the elasticity of the coil spring 60 in a state in which they are prevented from being lifted by the pressing pieces 50, 50.
[0028]
Next, the operation of the third embodiment configured as described above will be described. The operation of bringing the lighting fixture 31 into contact with the ceiling bars 26, 26 is substantially the same as the case shown in the first embodiment. However, when the lower end horizontal portions 46, 46 of the mounting bracket 42 come into contact with the upper flanges 27, 27 of the ceiling bars 26, 26, the locking brackets 52, 52 are moved upward by the pressing pieces 50, 50 of the mounting bracket 42. Since the movement is suppressed, the hooking pieces 55, 55 are moved in the direction of the coil spring 60 by the inner surfaces of the upper flanges 27, 27 of the ceiling bars 26, 26, and thus the coil spring 60 is compressed. Next, the lower end horizontal portions 46, 46 of the mounting bracket 42 are placed on the upper flanges 27, 27 of the ceiling bars 26, 26, and the hook pieces 55, 55 of the locking bracket 52 are opposite to the coil spring 60 by the coil spring 60. And is hooked to the locking portions 29, 29 of the ceiling bars 26, 26. In this way, the instrument body 32 is prevented from floating upward.
[0029]
Next, in order to remove the locking fitting 52, the operation pieces 58, 58 of the pair of locking fittings 52 are pinched with fingers and pressed. As a result, the coil spring 60 provided between the operation pieces 58 and 58 is compressed, and as shown in FIG. 9, the pair of locking metal fittings 52 moves toward the central portion of the instrument body 32, and the hooking pieces 55 and 55. Is disengaged from the locking portions 29, 29 of the ceiling bars 26, 26. At this time, the locking metal fitting 52 is restrained from being lifted upward by the presser pieces 50, 50. Thus, the instrument main body 32 can be removed from the ceiling bars 26 and 26.
[0030]
Example 4
FIG. 10 is a longitudinal sectional view showing an essential part of the fourth embodiment of the present invention, and FIG. 11 is an explanatory view of the operation of FIG. Reference numeral 52 denotes a locking bracket for mounting the mounting bracket 42 to the ceiling bars 26, 26. The left and right separate locking brackets shown in the first embodiment (FIGS. 1 to 4) are made of an elastic material. It is composed integrally. Reference numeral 63 denotes a V-shaped operation portion provided at the center of the locking metal 52, and the locking metal 52 bends when pressed inward.
[0031]
In the fourth embodiment, the flat portion 53 of the integrally formed locking metal fitting 52 is placed on the upper surface of the flat surface portion 43 of the attachment fitting 42, and the V-shaped operation portion 63 is placed in the hole 61 of the attachment fitting 42. And the penetrating pieces 54 and 54 are suspended from the openings 49 and 49 of the mounting bracket 42, and the hooking pieces 55 and 55 are attached to the engaging portions 29 and 29 of the ceiling bars 26 and 26, respectively. Lock. In this way, the locking member 52 is urged in the direction of the ceiling bars 26 and 26 by the elasticity of the operation portion 63 while being prevented from being lifted by the pressing pieces 50 and 50.
[0032]
Next, the operation of the fourth embodiment configured as described above will be described. The operation of placing the luminaire 31 on the ceiling bars 26, 26 is substantially the same as that shown in the third embodiment. However, the coil spring (FIGS. 8 and 9) provided on the locking metal fitting 52 is not compressed, but the V-shaped operation portion 63 is compressed.
[0033]
In order to remove the locking metal fitting 52, first, the operation part 63 of the locking metal fitting 52 is pinched with a finger and pressed. In this way, as shown in FIG. 11, both end portions of the locking fitting 52 move toward the central portion of the instrument body 32, and the hooking pieces 55, 55 are disengaged from the locking portions 29, 29 of the ceiling bars 26, 26. At this time, the locking metal fitting 52 is suppressed from being lifted upward by the pressing pieces 50, 50 of the attachment metal fitting 42. Thus, the instrument main body 32 can be removed from the ceiling bars 26 and 26.
[0034]
【The invention's effect】
As is clear from the above description, according to the lighting fixture of the present invention, when the lighting fixture is attached to the ceiling bar, the lighting fixture in a state where the assembly is completed is pushed into the ceiling as it is and it is simply dropped. Since the catch piece of the fastener engages with the locking portion of the ceiling bar, the ceiling work of the lighting fixture becomes extremely easy.
When releasing the fixture of the lighting fixture, the reflector inside the lighting fixture is taken out, the release screw on the upper surface of the fixture body is loosened (Example 1), and the release screw is tightened (Example 2). The operation piece of the locking bracket is pressed by pressing it with a finger (Example 3), and the operation piece of the locking bracket is simply pinched with a finger and pressed (Example 4). Since it is released, it is very easy to remove the luminaire.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an essential part of a first embodiment of the present invention.
FIG. 2 is an operation explanatory diagram of FIG. 1;
FIG. 3 is a perspective view showing a main part of FIG. 1;
4 is a perspective view showing a main part of FIG. 1. FIG.
FIG. 5 is a longitudinal sectional view showing a main part of a second embodiment of the present invention.
6 is an explanatory diagram of the operation of FIG.
7 is a perspective view showing a main part of FIG. 5. FIG.
FIG. 8 is a longitudinal sectional view showing an essential part of a third embodiment of the present invention.
9 is an explanatory diagram of the operation of FIG.
FIG. 10 is a longitudinal sectional view showing an essential part of a fourth embodiment of the present invention.
11 is an operation explanatory view of FIG.
FIG. 12 is a longitudinal sectional view showing an example of a conventional lighting fixture.
13 is a perspective view showing a main part of FIG. 12. FIG.
[Explanation of symbols]
26 Ceiling bar
27 Upper flange
28 Web
30 Lower flange
32 Instrument body
35 Flange
36 lamps
38 reflector
41, 51 slot
42 Mounting bracket
43 Plane section
45 Standing piece
46 Horizontal step
47 Locking piece
49 opening
50 Presser piece
52 Locking bracket
53 Plane section
54 Hanging piece
55 hook
56 Release screw
58 Operation piece
60 Coil spring
61,62 Rectangular hole
63 Operation section

Claims

ウェブ（２８）の両端部に上部フランジ（２７）と下部フランジ（２８）が設けられ、前記下部フランジ（２７）が天井に固定された断面Ｉ字状の一対の天井バー（２６）と、
平面部（４３）、該平面部（４３）の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バー（２６）の上部フランジ（２７）に当接する水平部（４６）及び前記天井バー（２６）の上部フランジ（２７）の外側に配設される係止片（４７）を有する立上り片（４５）、前記平面部（４３）に立上り片（４５）に近接して設けられた開口部（４９）、該開口部（４９）の近傍に設けられた押え片（５０）、及び前記平面部（４３）の中央部側に設けられた長穴（５１）からなる取付金具（４２）と、
両端部に前記天井バー（２６）の下部フランジ（３０）に当接するフランジ（３５）を有し、中央部側に前記取付金具（４２）の長穴（５１）に対応した長穴（４１）が設けられ、ランプ（３６）、安定器、反射板（３８）等が収容されて上面に前記取付金具（４２）が固定された断面ほぼ鍋形状の器具本体（３３）と、
弾性材からなり、平面部（５３）、該平面部（５３）の一端をほぼ直角に折り曲げて先端部に前記天井バー（２６）の上部フランジ（２７）に係止する引掛片（５５）が形成された垂下片（５４）を有するほぼＬ字状の一対の係止金具（５２）とからなり、
該係止金具（５２）の平面部（５３）を前記取付金具（４３）の押え片（５０）に挿入すると共に、前記係止金具（５２）の平面部（５３）の一端に位置する前記垂下片（５４）を前記取付金具（４２）の平面部（４３）に立ち上がり片（４５）に近接して設けられた開口部（４９）に挿入して該取付金具（４２）上に摺動可能に配設し、前記係止金具（５２）の平面部（５３）の他端に前記器具本体（３３）及び取付金具（４２）の長穴（４１），（５１）から挿入された解除ネジ（５６）を螺入し、前記係止金具（５２）を天井面に取り付ける際には、平面部（５３）の他端を解除ネジ（５６）で締め、一端を押え片（５０）で支持して、該係止金具（５２）の上下方向への移動を阻止した状態で、係止金具（５２）の垂下片（５４）及び引掛片（５５）が器具本体（３２）の両側面部（３３）方向にたわむようにして引掛片（５５）を天井バー（２６）の上部フランジ（２７）に係止させ、前記係止金具（５２）を天井面から取り外す際には、押え片（５０）を支点として平面部（５３）の他端の解除ネジ（５６）をゆるめて該平面部（５３）の他端部を持ち上げ、前記係止金具（５２）の垂下片（５４）及び引掛片（５５）を取付金具（４２）の立上り片（４５）より離して引掛片（５５）を天井バー（２８）の上部フランジ（２７）から外れるようにしたことを特徴とする照明器具。An upper flange (27) and a lower flange (28) are provided at both ends of the web (28) , and a pair of ceiling bars (26) having an I-shaped cross section, wherein the lower flange (27) is fixed to the ceiling,
Flat portion (43), both end portions are bent substantially at a right angle in the same direction of the flat portion (43), abutting the horizontal portion to the upper flange (27) of the ceiling bar (26) to the tip (46) and said A rising piece (45) having a locking piece ( 47) disposed on the outer side of the upper flange (27) of the ceiling bar (26) is provided in the plane portion (43 ) in the vicinity of the rising piece (45). openings (49), pressing piece provided in the vicinity of the opening (49) (50), and mounting bracket comprising a long hole (51) provided in the center portion side of the flat portion (43) ( 42)
It has a flange (35) that contacts the lower flange (30 ) of the ceiling bar (26) at both ends, and an elongated hole (41) corresponding to the elongated hole (51) of the mounting bracket (42) at the center side. An instrument body (33) having a substantially pan-shaped cross section in which a lamp (36) , a ballast, a reflector (38) and the like are accommodated and the mounting bracket (42) is fixed on the upper surface;
An elastic member, the planar portion (53), an upper flange (27) engages the catching piece of the flat surface portion (53) said ceiling bar (26) substantially perpendicular to bent tip at one end (55) is A pair of substantially L-shaped locking brackets (52) having a formed hanging piece (54) ,
The flat portion (53 ) of the locking fitting (52) is inserted into the holding piece (50) of the mounting fitting (43) , and the positioning fitting (52) is positioned at one end of the flat portion (53). The hanging piece (54) is inserted into the opening (49) provided in the flat portion (43 ) of the mounting bracket (42) in the vicinity of the rising piece (45) , and slides on the mounting bracket (42). The arrangement | positioning possible and the cancellation | release inserted from the long holes (41) and (51) of the said instrument main body (33) and a mounting bracket (42) in the other end of the plane part (53) of the said locking metal fitting (52) When the screw (56) is screwed in and the locking metal fitting (52) is attached to the ceiling surface, the other end of the flat portion (53) is tightened with a release screw (56), and one end is pressed with a presser piece (50). In a state in which the locking metal fitting (52) is prevented from moving in the vertical direction, the hanging piece (54) and the locking metal piece (52) are suspended. The hook piece (55) is locked to the upper flange (27) of the ceiling bar (26) so that the hook piece (55) bends in the direction of the both side surfaces (33) of the instrument body (32), and the locking metal fitting (52 ) Is removed from the ceiling surface, the release screw (56) at the other end of the flat surface portion (53) is loosened with the presser piece (50) as a fulcrum, and the other end portion of the flat surface portion (53) is lifted up. The hanging piece (54) and the hooking piece (55) of the fastener (52) are separated from the rising piece (45) of the fitting (42), and the hooking piece (55) is separated from the upper flange (27) of the ceiling bar (28). A luminaire characterized by being detached .

ウェブ（２８）の両端部に上部フランジ（２７）と下部フランジ（２８）が設けられ、前記下部フランジ（２８）が天井に固定された断面Ｉ字状の一対の天井バー（２６）と、
平面部（４３）、該平面部（４３）の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バー（２６）の上部フランジ（２７）に当接する水平部（４６）及び前記天井バー（２６）の上部フランジ（２７）の外側に配設される係止片（４７）を有する立上り片（４５）、前記平面部（４３）に立上り片（４５）に近接して設けられた開口部（４９）、該開口部（４９）の近傍に設けられた押え片（５０）、及び前記平面部（４３）の中央部側に設けられたねじ穴（６１）からなる取付金具（４２）と、
両端部に前記天井バー（２６）の下部フランジ（３０）に当接するフランジ（３５）を有し、中央部側に前記取付金具（４２）のねじ穴（６１）に対応し開口部（６２）が設けられ、ランプ（３６）、安定器、反射板（３８）等が収容されて上面に前記取付金具（４２）が固定された断面ほぼ鍋形状の器具本体（３３）と、
弾性材からなり、平面部（５３）、該平面部（５３）の両端部を同方向にほぼ直角に折り曲げて先端部に前記天井バー（２６）の上部フランジ（２７）に係止する引掛片（５５）が形成された垂下片（５４）を有するほぼコ字状の係止金具（５２）とからなり、
該係止金具（５２）の平面部（５３）を前記取付金具（４２）の押え片（５０）に挿入すると共に、前記垂下片（５４）を前記取付金具（４２）の平面部（４３）に立ち上がり片（４５）に近接して設けられた開口部（４９）にそれぞれ挿入して該取付金具（４２）上に配設し、前記係止金具（５２）の平面部（５３）のほぼ中央部に前記取付金具（４２）のねじ穴に螺入された解除ネジ（５６）を当接させ、前記係止金具（５２）を天井面に取り付ける際には、平面部（５３）のほぼ中央部を解除ネジ（５６）をゆるめ、両端をそれぞれ押え片（５０）で支持して、該係止金具（５２）の上下方向への移動を阻止した状態で、係止金具（５２）のそれぞれの垂下片（５４）及び引掛片（５５）が器具本体（３２）の両側面部（３３）方向にたわむようにして引掛片（５５）を天井バー（２６）の上部フランジ（２７）に係止させ、前記係止金具（５２）を天井面から取り外す際には、それぞれの押え片（５０）を支点として平面部（５３）のほぼ中央部の解除ネジ（５６）を締めて該平面部（５３）の中央部付近を下面から突き上げてたわませ、前記係止金具（５２）の垂下片（５４）及び引掛片（５５）を取付金具（４２）の立上り片（４５）より離して引掛片（５５）を天井バー（２８）の上部フランジ（２７）から外れるようにしたことを特徴とする照明器具。At both ends and the upper flange (27) a lower flange (28) is provided, and the lower flange (28) cross-section is fixed to the ceiling I-shaped pair of ceiling bar (26) of the web (28),
Flat portion (43), both end portions are bent substantially at a right angle in the same direction of the flat portion (43), abutting the horizontal portion to the upper flange (27) of the ceiling bar (26) to the tip (46) and said A rising piece (45) having a locking piece ( 47) disposed on the outer side of the upper flange (27) of the ceiling bar (26) is provided in the plane portion (43 ) in the vicinity of the rising piece (45). openings (49), pressing piece provided in the vicinity of the opening (49) (50), and mounting bracket comprising a screw hole (61) provided in the center portion side of the flat portion (43) ( 42)
Both ends have flanges (35) that come into contact with the lower flange (30 ) of the ceiling bar (26) , and openings (62) correspond to the screw holes (61) of the mounting bracket (42) on the center side. An instrument body (33) having a substantially pan-shaped cross section in which a lamp (36) , a ballast, a reflector (38) and the like are accommodated and the mounting bracket (42) is fixed on the upper surface;
An elastic member, the planar portion (53), catching piece for engaging the upper flange (27) of the both end portions in the distal end portion is bent substantially at a right angle in the same direction the ceiling bar (26) of the flat portion (53) A substantially U-shaped locking bracket (52) having a hanging piece (54) formed with (55) ,
Planar portion of the locking fitting (52) is inserted into the pressing piece (50) of said mounting bracket (42) to (53), the planar portion of the suspended piece (54) said mounting bracket (42) (43) to be inserted into the opening provided in proximity to the rising piece (45) (49) disposed on said mounting bracket (42), substantially of the locking fitting planar portion (52) (53) When the release screw (56) screwed into the screw hole of the mounting bracket (42) is brought into contact with the central portion and the locking bracket (52) is mounted on the ceiling surface, the flat portion (53) Loosen the release screw (56) at the center, and support both ends with the presser pieces (50) to prevent the locking metal fitting (52) from moving in the vertical direction. Each drooping piece (54) and hooking piece (55) are directed in the direction of both side surfaces (33) of the instrument body (32). When the hooking piece (55) is locked to the upper flange (27) of the ceiling bar (26) and the locking fitting (52) is removed from the ceiling surface, the respective holding pieces (50) are used as fulcrums. The release screw (56) at the substantially central portion of the flat surface portion (53) is tightened and the vicinity of the central portion of the flat surface portion (53) is pushed up from the lower surface to bend, and the hanging piece (54) of the locking metal fitting (52) And the hook piece (55) is separated from the rising piece (45) of the mounting bracket (42) so that the hook piece (55) is detached from the upper flange (27) of the ceiling bar (28). .

ウェブ（２８）の両端部に上部フランジ（２７）と下部フランジ（２８）が設けられ、前記下部フランジ（２８）が天井に固定された断面Ｉ字状の一対の天井バー（２６）と、
平面部（４３）、該平面部（４３）の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バー（２６）の上部フランジ（２７）に当接する水平部（４６）及び前記天井バー（２６）の上部フランジ（２７）の外側に配設される係止片（４７）を有する立上り片（４５）、前記平面部（４３）に立上り片（４５）に近接して設けられた開口部（４９）、該開口部（４９）の近傍に設けられた押え片（５０）、及び前記平面部（４３）の中央部側に設けられた２つの長穴からなる取付金具（４２）と、
両端部に前記天井バー（２６）の下部フランジ（３０）に当接するフランジ（３５）を有し、中央部側に前記取付金具（４２）の長穴に対応した長穴が設けられ、ランプ（３６）、安定器、反射板（３８）等が収容されて上面に前記取付金具（４２）が固定された断面ほぼ鍋形状の器具本体（３３）と、
平面部（５３）、該平面部（５３）の一端をほぼ直角に折り曲げて先端部に前記天井バー（２６）の上部フランジ（２７）に係止する引掛片（５５）が形成された垂下片（５４）を有し、前記平面部（５３）の他端に前記垂下片（５４）と同方向に折り曲げられた操作片（５８）が設けられた一対の係止金具（５２）とからなり、
該係止金具（５２）の平面部（５３）をそれぞれ前記取付金具（４２）の押え片（５０）に挿入すると共に、前記垂下片（５４）を前記取付金具（４２）の平面部（４３）に立ち上がり片（４５）に近接して設けられた開口部（４９）に挿入し、また前記操作片（５８）を取付金具（４２）及び器具本体（３３）の長穴（６１），（６２）に挿入して該取付金具（４２）上に摺動可能に配設し、前記両係止金具（５２）の操作片（５８）間にばね（６０）を介装し、前記係止金具（５２）を天井面に取り付ける際には、平面部（５３）の両端をそれぞれ押え片（５０）で支持し、係止金具（５２）の操作片（５８）をばね（６０）の弾性力によって外方に押圧して、該係止金具（５２）の上下方向への移動を阻止した状態で、係止金具（５２）のそれぞれの垂下片（５４）及び引掛片（５５）が器具本体（３２）の両側面部（３３）方向にたわむようにして引掛片（５５）を天井バー（２６）の上部フランジ（２７）に係止させ、前記係止金具（５２）を天井面から取り外す際には、それぞれの押え片（５０）を支点として係止金具（５２）の操作片（５８）を内方に押圧してばね（６０）を圧縮させ、前記係止金具（５２）の垂下片（５４）及び引掛片（５５）を取付金具（４２）の立上り片（４５）より離して引掛片（５５）を天井バー（２８）の上部フランジ（２７）から外れるようにしたことを特徴とする照明器具。At both ends and the upper flange (27) a lower flange (28) is provided, and the lower flange (28) cross-section is fixed to the ceiling I-shaped pair of ceiling bar (26) of the web (28),
Flat portion (43), both end portions are bent substantially at a right angle in the same direction of the flat portion (43), abutting the horizontal portion to the upper flange (27) of the ceiling bar (26) to the tip (46) and said A rising piece (45) having a locking piece ( 47) disposed on the outer side of the upper flange (27) of the ceiling bar (26) is provided in the plane portion (43 ) in the vicinity of the rising piece (45). openings (49), pressing piece provided in the vicinity of the opening (49) (50), and two mounting brackets comprising a long hole provided in the center portion side of the flat portion (43) (42 ) And
Has a lower flange (30) of the both end portions ceiling bar (26) abutting the flange (35), a long hole corresponding to the elongated hole of the mounting bracket on the central portion (42) is provided, the lamp ( 36) an instrument body (33) having a substantially pan-shaped cross section in which a ballast, a reflector (38), etc. are accommodated and the mounting bracket (42) is fixed on the upper surface;
Flat portion (53), suspended piece that the the distal end portion is bent substantially at a right angle at one end roof bar (26) catching piece for engaging the upper flange (27) of (55) is formed of a flat portion (53) (54) , and a pair of locking brackets (52) provided with an operation piece (58) bent in the same direction as the hanging piece (54 ) at the other end of the flat surface portion (53). ,
Is inserted flat portion of the locking fitting (52) and (53) to hold pieces of each said mounting bracket (42) (50), said flat portion of said mounting bracket suspended piece (54) (42) (43 ) the rising piece (opening provided in proximity to 45) was inserted into (49) and said operation piece (58) a mounting bracket (42) and elongated hole (61 of the instrument body (33)), ( 62) and is slidably disposed on the mounting bracket (42) , and a spring (60) is interposed between the operation pieces (58) of the both locking brackets (52) , and the locking When attaching the metal fitting (52) to the ceiling surface, both ends of the flat surface portion (53) are supported by the holding pieces (50), respectively, and the operation piece (58) of the locking metal fitting (52) is elastic of the spring (60). In the state where the locking metal fitting (52) is prevented from moving in the vertical direction by being pressed outward by force, the locking metal fitting (52 The hanging piece (55) is engaged with the upper flange (27) of the ceiling bar (26) so that the hanging piece (54) and the hanging piece (55) of each of the are bent in the direction of the both side surfaces (33) of the instrument body (32). When the locking bracket (52) is removed from the ceiling surface, the operation piece (58) of the locking bracket (52) is pressed inwardly with the respective presser piece (50) as a fulcrum. 60) is compressed, and the hanging piece (54) and the hooking piece (55) of the locking fitting (52) are separated from the rising piece (45) of the mounting fitting (42), and the hooking piece (55) is moved to the ceiling bar (28). A lighting fixture characterized by being detached from the upper flange (27) .

ウェブ（２８）の両端部に上部フランジ（２７）と下部フランジ（２８）が設けられ、前記下部フランジ（２８）が天井に固定された断面Ｉ字状の一対の天井バー（２６）と、
平面部（４３）、該平面部（４３）の両端部が同方向にほぼ直角に折り曲げられ、先端部に前記天井バー（２６）の上部フランジ（２７）に当接する水平部（４６）及び前記天井バー（２６）の上部フランジ（２７）の外側に配設される係止片（４７）を有する立上り片（４５）、前記平面部（４３）に立上り片（４５）に近接して設けられた開口部（４９）、該開口部（４９）の近傍に設けられた押え片（５０）、及び前記平面部（４３）の中央部側に設けられた長穴（６１）からなる取付金具４２と、
両端部に前記天井バー（２６）の下部フランジ（３０）に当接するフランジ（３５）を有し、中央部側に前記取付金具（４２）の長穴（６１）に対応した長穴（６１）が設けられ、ランプ（３６）、安定器、反射板（３８）等が収容されて上面に前記取付金具（４２）が固定された断面ほぼ鍋形状の器具本体（３３）と、
弾性材からなり、平面部（５３）、該平面部（５３）の両端部を同方向にほぼ直角に折り曲げて先端部に前記天井バー（２６）の上部フランジ（２７）に係止する引掛片（５５）を形成された垂下片（５４）を設けると共に、ほぼ中央部を折曲げて形成した操作部（６３）により弾性が付与された係止金具（５２）からなり、
該係止金具（５２）の平面部（５３）を前記取付金具（４２）の押え片（５０）にそれぞれ挿入すると共に、前記垂下片（５４）を前記取付金具（４２）の平面部（４３）に立ち上がり片（４５）に近接して設けられた開口部（４９）にそれぞれ挿入し、また記操作部（６３）を取付金具（４２）及び器具本体（３３）の長穴（６１），（６２）に挿入して該取付金具（４２）上に摺動可能に配設し、前記係止金具（５２）を天井面に取り付ける際には、平面部（５３）の両端をそれぞれ押え片（５０）で支持し、係止金具（５２）の操作部（６３）を操作部の弾性力によって外方に押圧して、該係止金具（５２）の上下方向への移動を阻止した状態で、係止金具（５２）のそれぞれの垂下片（５４）及び引掛片（５５）が器具本体（３２）の両側面部（３３）方向にたわむようにして引掛片（５５）を天井バー（２６）の上部フランジ（２７）に係止させ、前記係止金具（５２）を天井面から取り外す際には、それぞれの押え片（５０）を支点として係止金具（５２）の操作部（６３）を内方に押圧してたわませ、前記係止金具（５２）の垂下片（５４）及び引掛片（５５）を取付金具（４２）の立上り片（４５）より離して引掛片（５５）を天井バー（２８）の上部フランジ（２７）から外れるようにしたことを特徴とする照明器具。At both ends and the upper flange (27) a lower flange (28) is provided, and the lower flange (28) cross-section is fixed to the ceiling I-shaped pair of ceiling bar (26) of the web (28),
Flat portion (43), both end portions are bent substantially at a right angle in the same direction of the flat portion (43), abutting the horizontal portion to the upper flange (27) of the ceiling bar (26) to the tip (46) and said A rising piece (45) having a locking piece ( 47) disposed on the outer side of the upper flange (27) of the ceiling bar (26) is provided in the plane portion (43 ) in the vicinity of the rising piece (45). openings (49), mounting bracket 42 formed from the opening portion pressing piece provided in the vicinity of (49) (50), and a long hole provided in the center portion side of the flat portion (43) (61) When,
It has a flange (35) that contacts the lower flange (30 ) of the ceiling bar (26) at both ends, and an elongated hole (61) corresponding to the elongated hole (61) of the mounting bracket (42) at the center side. An instrument body (33) having a substantially pan-shaped cross section in which a lamp (36) , a ballast, a reflector (38) and the like are accommodated and the mounting bracket (42) is fixed on the upper surface;
An elastic member, the planar portion (53), catching piece for engaging the upper flange (27) of the both end portions in the distal end portion is bent substantially at a right angle in the same direction the ceiling bar (26) of the flat portion (53) (55) is provided with a hanging piece (54) provided with a latch (52) provided with elasticity by an operation part (63) formed by bending a substantially central part,
Planar portion of the locking fitting (52) (53) is inserted respectively to the pressing piece (50) of said mounting bracket (42), said flat portion of said mounting bracket suspended piece (54) (42) (43 ) In the opening (49) provided close to the rising piece (45) , and the operation part (63) is inserted into the mounting bracket (42) and the long holes (61) of the instrument body (33 ), (62) and slidably disposed on the mounting bracket (42). When the locking bracket (52) is mounted on the ceiling surface, both ends of the flat surface portion (53) are pressed pieces. (50), and the operation part (63) of the locking metal fitting (52) is pressed outward by the elastic force of the operation part to prevent the movement of the locking metal fitting (52) in the vertical direction. Then, the respective hanging pieces (54) and the hooking pieces (55) of the locking metal fitting (52) are connected to the instrument body (32). When the hooking piece (55) is locked to the upper flange (27) of the ceiling bar (26) so as to bend in the direction of the both side surfaces (33), and the locking metal fitting (52) is removed from the ceiling surface, Using the presser piece (50) as a fulcrum, the operating portion (63) of the locking metal fitting (52) is pressed inward to bend, and the hanging piece (54) and the hooking piece (55) of the locking metal fitting (52). Is separated from the rising piece (45) of the mounting bracket (42) so that the hook piece (55) is detached from the upper flange (27) of the ceiling bar (28) .