JP2004362783A

JP2004362783A - Luminaire

Info

Publication number: JP2004362783A
Application number: JP2003155997A
Authority: JP
Inventors: Katsu Yasuhara; 克安原; Yoshitaka Hashimoto; 由貴橋本
Original assignee: Toshiba Lighting and Technology Corp
Current assignee: Toshiba Lighting and Technology Corp
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2004-12-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire which can be mounted highly stably on supporting bars with different height, and enables common use of parts. <P>SOLUTION: This luminaire is supported on the supporting bars each having a locking protrusion at its upper part, by a plurality of mounting fixtures 21 fixed to a luminaire body. Each mounting fixture 21 includes a base fixture member 22 which is fixed to the luminaire body so as to be orthogonal to the longitudinal direction of the luminaire body, a pair of end fixture members 25, a plurality of screw holes 26-28, and connecting screws 31. Each end fixture member 25 includes a fitting part 29 for being fitted in the locking protrusion from above to be mounted. The screw holes 26-28 are arranged in the end fixture member 25 in different height positions along the width direction of the member 25. Fitting each connecting screw 31 into any one of the screw holes 26-28, the end fixture member 25 is interlocked with the end of the base fixture member 22 so that the end fixture member 25 does not move up and down. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】本発明は、例えばシステム天井の支持バー上に設置される照明器具に関する。
【０００２】
【従来の技術】システム天井の支持バーとして、高さ寸法が異なる種々の支持バーが提供されている。そこで、高さが異なる各種の支持バーに何らの調整を施工現場で要することなく適合してシステム天井に設置できるようにした照明器具が知られている（例えば特許文献１参照。）。
【０００３】
この特許文献１の照明器具では、器具本体に固定された取付け金具に、下向きに折れ曲がった両端部を垂直な金具取付け部を設けている。更に、この金具取付け部と、これに重ね合わされる設置金具のベース部とのいずれか一方に、上下方向に延びる長孔を設け、他方に、長孔を貫通するリベット等の軸状連結体を取付けている。これにより、金具取付け部に設置金具が上下方向に移動自在に取付けられている。このため、天井の支持バーに設置金具を載せることに伴い、この金具が上下方向に自由に移動して、設置金具の高さ位置を支持バーの高さに適合させることができる。
【０００４】
【特許文献１】
特開平８−１８０７２４号公報（段落００１４−００１５、００１７、００７０−００７３、図１０−図１３）
【０００５】
【発明が解決しようとする課題】特許文献１の照明器具では、支持バー上に載置される設置金具を金具取付け部に対して上下方向に移動自在に取付けているので、支持バー上に設置された状態で照明器具は、設置金具と金具取付け部との接続部での動きに基づいて上下に動くことが可能である。このため、地震時などにおいて照明器具ががたつき易く、安定した設置状態に保持するには難がある。
【０００６】
本発明が解決しようとする課題は、高さが異なる複数種の支持バー上への設置が可能であるだけではなく、支持バー上への設置状態の安定性が高い照明器具を得ることにある。
【０００７】
【課題を解決するための手段】前記課題を解決するために、請求項１の発明は、器具本体と、この器具本体に固定された複数の取付け金具とを備え、上部に係止凸部を有する支持バー上に支持される照明器具において、
前記取付け金具が、前記器具本体の長手方向と直交してこの器具本体に固定されたベース金具部材と、前記係止凸部に上方から嵌合して載置される嵌合部が設けられた一対の端金具部材と、前記ベース金具部材の両端部及び前記端金具部材の内の一方の金具部材に、この金具部材の幅方向に沿って異なる高さ位置に設けられた位置決め部と、この位置決め部の所定個所に通される連結部材を有して他方の金具部材と前記一方の金具部材とを上下に動かないように連結する連結手段と、を備えたことを特徴としている。
【０００８】
請求項１の発明では、取付け金具が、ベース金具部材の両端部に端金具部材を連結手段で連結して作られており、端金具部材は、高さ位置が異なる位置決め部を選択して連結手段によりベース金具部材の端部に連結されるから、選択された位置決め部の高さ位置に応じた高さに端金具部材を配置できる。これにより、端金具部材の嵌合部の位置を、照明器具を支持する支持バーの高さに適合させることが可能であるので、高さが異なる複数種の支持バー上に設置可能な照明器具を提供できる。
【０００９】
そして、連結手段は、その連結部材を位置決め部の所定個所に通して端金具部材をベース金具部材の端部に連結するので、端金具部材を上下方向に動かないように連結できる。これにより、端金具部材とベース金具部材との連結を原因として、地震時などに照明器具ががたつくことが抑制され、支持バー上への設置状態の安定性が高められる。
【００１０】
請求項２の発明は、前記一方の金具部材の幅方向両側に上下方向に延びるとともに前記幅方向に相対向する折り曲げフランジを設け、前記他方の金具部材の上下方向に延びる幅方向両側縁を前記折り曲げフランジに接触させたことを特徴としている。
【００１１】
この請求項２の発明では、一方の金具部材の折り曲げフランジで他方の金具部材を幅方向に挟むように保持して、ベース金具部材の端部に対する端金具部材の幅方向の動きを防止できる。これにより、端金具部材の幅方向に沿う外力が連結手段に作用し難くなって、例えば連結手段が緩むこと等を抑制できる。
【００１２】
【発明の実施の形態】以下、図１〜図５を参照して本発明の第１実施形態を説明する。図１及び図４中符号１はシステム天井用の照明器具を示している。
【００１３】
図１及び図５（Ａ）〜（Ｃ）中符号４はシステム天井の支持バーを示している。支持バー２は、図示しない天井スラブに吊り部材を介して吊持されていて、水平方向に張り出す器具受け部２ａと、上方に突出する係止凸部２ｂとを有している。支持バー２には、図５（Ａ）〜（Ｃ）に例示したいわゆるＴバーを好適に使用できる。図５（Ａ）（Ｂ）の支持バー２はスチール製、図５（Ｃ）の支持バー２はアルミニューム合金製である。図５（Ａ）〜（Ｃ）に示した支持バー２の高さｈ（器具受け部２ａの上面から係止凸部２ｂの上端までの寸法）は、いずれも異なっている。図５（Ａ）の支持バー２の高さｈは４０ｍｍ、図５（Ｂ）の支持バー２の高さｈは３７ｍｍ、図５（Ｃ）の支持バー２の高さｈは４１ｍｍである。照明器具１はシステム天井の隣接して配置された互いに平行な支持バー２にわたって後述のように設置される。
【００１４】
照明器具１は、器具本体１１と、複数例えば２個の取付け金具２１とを備えている。図示の照明器具１は下面開放形の器具であるが、これに代えて器具本体１１の下面開放部にバッフル等の制光体を内蔵した制光体付きの照明器具であってもよく、或いは、器具本体１１の下側にその下面開放部を覆う制光体を配置した照明器具であってもよい。
【００１５】
器具本体１１は、長手方向両端及び下面が夫々開放するように折り曲げられた板金製の本体主部１２と、この主部１２の長手方向両端を夫々塞いで取付けられた本体端板１３とを備えている。図１及び図４中符号１４は、器具本体１１の下面開放部を囲んで四角枠状に形成され上方に開放する溝構造の補強縁を示している。
【００１６】
この器具本体１１の内側には、複数（図１に一つのみ図示）の支持金具１５を介して天井反射板１６が取付けられている。この天井反射板１６は本体主部１２の天井壁１２ａの下面に固定された点灯装置１７を覆っている。図１中符号１８は器具本体１１の長手方向両端部に夫々取付けられたランプソケットを示している。これらのソケット１８は、天井反射板１６を通って設けられていて、この天井反射板１６の下方位置において図示しない直管形けい光ランプを支持するようになっている。
【００１７】
各取付け金具２１は、図２に示すように単一のベース金具部材２２と、一対の端金具部材２５とを備えている。これら各金具部材２２、２５はいずれも厚さが例えば１ｍｍと比較的厚めの鋼板製である。
【００１８】
ベース金具部材２２は、水平方向に延びる接続部２２ａの長手方向両端部に、夫々下向きの連結部２２ｂを折り曲げてほぼコの字状に作られている。このベース金具部材２２の幅方向両側縁には、夫々外向きの折り曲げフランジ２２ｃ、２２ｄが設けられている。これらのフランジ２２ｃ、２２ｄは接続部２２ａと連結部２２ｂとにわたって連続していて、ベース金具部材２２を補強している。両連結部２２ｂの下端部には連結孔２３が夫々開けられている。図２及び図３に示すように連結孔２３は、連結部２２ｂの幅方向に沿って水平に延びる単一の長孔で形成されている。
【００１９】
ベース金具部材２２は、器具本体１１の長手方向と直交して、この器具本体１１に固定されている。器具本体１１へのベース金具部材２２の固定は、天井壁１２ａを横断して重ねられた接続部２２ａに、天井壁１２ａを上向きに貫通してねじ込まれた図示しない複数のねじを介して行われる。図１に示すようにベース金具部材２２の連結部２２ｂ間の離間寸法は、隣接した支持バー２の係止凸部２ｂ間の離間寸法に略等しく、かつ、器具本体１１の最大幅寸法よりも少し大きい。
【００２０】
一対の端金具部材２５の幅方向両側縁には、図３に示すように上下方向に延びるとともに幅方向に相対向する折り曲げフランジ２５ａ、２５ｂが設けられている。端金具部材２５の幅Ａは、連結部２２ｂの折り曲げフランジ２２ｃ、２２ｄ間の幅Ｂに等しく作られている。これにより、端金具部材２５は、その両側縁をなす折り曲げフランジ２５ａ、２５ｂを連結部２２ｂの折り曲げフランジ２２ｃ、２２ｄに接して、連結部２２ｂと組合わされている。
【００２１】
端金具部材２５の上部には、折り曲げフランジ２５ａ、２５ｂ間に位置して位置決め部が設けられている。この位置決め部は例えば複数具体的には３個のねじ孔２６〜２８で作られている。これらのねじ孔２６〜２８は端金具部材２５の幅方向の位置及び高さ位置を異ならせて設けられている。言い換えれば、各ねじ孔２６〜２８は端金具部材２５の幅方向に沿って異なる高さ位置に設けられている。
【００２２】
中間の高さ位置のねじ孔２７は最も多用されている図５の（Ｂ）の支持バー２に照明器具１を支持させる場合に使用され、このねじ孔２７より高い位置のねじ孔２６は図５の（Ｂ）の支持バー２より高さＨが低い支持バー２に照明器具１を支持させる場合に使用され、ねじ孔２７より低い位置のねじ孔２８は図５の（Ｂ）の支持バー２より高さＨが高い支持バー２に照明器具１を支持させる場合に使用されるようになっている。具体的には、最も高い位置のねじ孔２６は、図５の中で高さｈが最も低い図５の（Ｂ）の支持バー２に照明器具１を支持させる場合に使用される。最も低い位置のねじ孔２８は、図５の中で高さｈが最も高い図５（Ｃ）の支持バー２に照明器具１を支持させる場合に使用される。これらの中間の高さ位置のねじ孔２７は、図５（Ａ）の支持バー２に照明器具１を支持させる場合に使用される。
【００２３】
端金具部材２５の下部には、支持バー２の係止凸部２ｂに上方から嵌合して載置される嵌合部２９が一体に設けられているとともに、係止ばね３０がリベット止めにより取付けられている。嵌合部２９は、係止凸部２ｂにその一側方から対向する突出片２９ａと、係止凸部２ｂに載置されるとともに係止凸部２ｂにその他側方から対向するＬ字状の載置片２９ｂとからなる。係止ばね３０は金属のばね板からなる。このばね３０の下部は、係止凸部２ｂに対してその下方から引っ掛かり可能となるようにＶ字状の係止端部３０ａをなして折り曲げられている。
【００２４】
取付け金具２１は連結手段をなす連結部材として連結ねじ３１を有している。このねじ３１は、連結部２２ｂの外面に端金具部材２５が重ね合わされた状態で、連結孔２３とこれに連通している一つのねじ孔２６又は２７或いは２８にねじ込まれて、ベース金具部材２２と端金具部材２５とを連結している。この連結は、照明器具１の取付け施工の現場ではなく、照明器具１を生産する工場で、予め指示された一つのねじ孔を選択して行われる。これにより、例えばビルディングのシステム天井に照明器具１を設置する場合等、膨大な数の照明器具１を設置する際における施工業者の手間を、大幅に軽減するのに有効である。なお、連結ねじ３１に螺合して端金具部材２５の表面に接する締付けナット（図示しない）を併用することは妨げない。
【００２５】
前記構成の取付け金具２１を備えた照明器具１は、この器具１の取付け施工現場に搬入されて、システム天井の隣接している支持バー２の上方に導き、これらの支持バー２に位置合わせした状態で下降させることにより支持バー２に支持される。
【００２６】
この支持状態では、器具本体の補強縁１４が支持バー２の器具受け部２ａに載置されるとともに、取付け金具２１の嵌合部２９が支持バー２の係止凸部２ｂに上方から嵌合し、この嵌合部２９の載置片２９ｂが係止凸部２ｂの上端に載置される。同時に、係止ばね３０が係止凸部２ｂを下方に乗り越え、その係止端部３０ａが係止凸部２ｂに下方から近接して対向する。こうして照明器具１が支持バー２に支持された状態を図１に示す。
【００２７】
前記照明器具１は、連結孔２３を通る連結ねじ３１を最も高い位置のねじ孔２６にねじ込むことにより、端金具部材２５が有する嵌合部２９の高さ位置を図５（Ｃ）に示す支持バー２の高さｈに適合させて使用できる。又、連結孔２３を通る連結ねじ３１を最も低い位置のねじ孔２８にねじ込むことにより、端金具部材２５が有する嵌合部２９の高さ位置を図５（Ｂ）に示す支持バー２の高さｈに適合させて使用できる。更に、連結孔２３を通る連結ねじ３１を中間の高さ位置のねじ孔２７にねじ込むことにより、端金具部材２５が有する嵌合部２９の高さ位置を図５（Ａ）に示す支持バー２の高さｈに適合させて使用できる。
【００２８】
このように高さ位置が異なるねじ孔２６〜２８のいずれかを選択して、連結ねじ３１によりベース金具部材２２の連結部２２ｂに端金具部材２５を連結できるから、選択したねじ孔の高さ位置に応じた高さに端金具部材２５を配置できる。すなわち、端金具部材２５の嵌合部２９の位置を、照明器具１を支持する支持バー２の高さｈに適合させることができるので、この照明器具１を高さｈが異なる複数種の支持バー２上に設置できる。
【００２９】
こうした照明器具１の共用化により、器具１の部品管理が容易になるとともに、照明器具１の組立て時での取付け金具２１の取付け間違いも抑制可能である。
【００３０】
そして、各ねじ孔２６〜２８は互いに独立しており、連結ねじ３１は選択した所定のねじ孔に通して端金具部材２５とベース金具部材２２とを連結しているので、連結された端金具部材２５が上下方向に動かないようにできる。しかも、各ねじ孔２６〜２８は互いに独立しているので、その高さ１２に応じて正確に端金具部材２５を連結できる。これにより、端金具部材２５とベース金具部材２２との連結を原因とする、地震時などの際に照明器具１のがたつきが抑制され、照明器具１の支持バー２上への設置状態の安定性が高められる。これに対して、各ねじ孔２６〜２８を例えば上下方向に沿って設ける場合には、これらのねじ孔２６〜２８が連続して従来技術で説明した長孔となってしまい、好ましくない。
【００３１】
端金具部材２５は、その左右両側縁である折り曲げフランジ２５ａ、２５ｂを、連結部２２ｂの上下方向に延びる折り曲げフランジ２２ｃ、２２ｄ相互の対向面に接触させているので、端金具部材２５の幅方向に沿う外力が連結ねじ３１に作用し難くなり、この連結ねじ３１が緩むことを抑制できる。このため、ベース金具部材２２の端部である連結部２２ｂと端金具部材２５との連結状態を確実に保持することが可能である。したがって、この点においても、支持バー２上への照明器具１の設置状態の安定性を高めることができる。なお、このことは、折り曲げフランジ２５ａ、２５ｂを省略して、端金具部材２５の左右両側縁を折り曲げフランジ２２ｃ、２２ｄに接触させる場合にも同様である。
【００３２】
又、工場においてベース金具部材２２と端金具部材２５とを連結する場合にも、端金具部材２５を折り曲げフランジ２２ｃ、２２ｄに沿わせて移動させることができるので、端金具部材２５が連結部２２ｂに対して連結ねじ３１を中心に回るように傾くことがない。これにより、選択されたねじ孔と連結孔２３との位置あわせが容易となる。しかも、連結ねじ３１を締付ける際にも端金具部材２５が回転することがないので、格別に端金具部材２５を押える手間を要しない。したがって、ベース金具部材２２と端金具部材２５とを容易に連結できる。
【００３３】
又、照明器具１の製造において、各ねじ孔２６〜２８の配置が既述のものと異なる他の端金具部材２５を複数種用意して置く場合には、これら各種の端金具部材２５に対して取付け金具２１のベース金具部材２２を共通部品とできる。ベース金具部材２２がその連結部２２ｂの曲げ加工を必要とする場合には、その加工により、コスト高となるので、以上のように共通部品とできることは、取付け金具２１、ひいては、この金具２１を備える照明器具１のコストを低減する上で好ましい。
【００３４】
以下、本発明の第２〜第５の各実施形態を説明する。これらの実施形態は基本的には第１実施形態と同じであるので、同じ構成については第１実施形態と同じ符号を付し、その構成及び作用の説明は省略し、異なる構成について必要に応じて図１及び図５等も参照して説明する。
【００３５】
図６及び図７は本発明の第２実施形態を示している。
【００３６】
第２実施形態では、端金具部材２５の位置決め部として図７に示すように傾斜した長孔３５を設けている。傾斜している長孔３５の各部は、端金具部材２５の幅方向に沿って異なる高さ位置に設けられているの実質的に同じである。したがって、例えば長孔３５の傾斜上端部を連結孔２３の折り曲げフランジ２２ｃ寄りの端部に位置合わせした場合には、図５（Ｃ）に示す支持バー２に照明器具１を支持するのに適合でき、長孔３５の傾斜下端部を連結孔２３の折り曲げフランジ２２ｄ寄りの端部に位置合わせした場合には、図５（Ｂ）に示す支持バー２に照明器具１を支持するのに適合でき、長孔３５の中間部を連結孔２３の中間部に位置合わせした場合には、図５（Ａ）に示す支持バー２に照明器具１を支持するのに適合できる。勿論、長孔３５であるので、その傾斜上端部と傾斜下端部との高さ範囲内において他の高さの支持バーに適合させることもできる。
【００３７】
更に、第２実施形態では、ベース金具部材２２と端金具部材２５とを連結して取付け金具２１を組立てる連結手段として、位置合わせされた連結孔２３と長孔３５とに通される連結部材をなすボルト３６と、これに螺合するナット３７とが用いられている。
【００３８】
この第２実施形態で、万が一、ボルト３６とナット３７との締付けが緩んでも、このボルト３６が上下方向に移動するには、ボルト３６が照明器具１に対する荷重方向（上下方向）に対して長孔３５に沿って横方向に動かなければならない。しかし、長孔３５は緩い角度で斜めに設けられているとともに、連結部２２ｂの折り曲げフランジ２２ｃ、２２ｄによって端金具部材２５がその幅方向に動き止めされているので、荷重方向と直角な横方向へのボルト３６の動きが抑制される。これにより、ボルト３６とナット３７の締付けにより連結部２２ｂに対して端金具部材２５を上下方向に動かないように連結した組立て状態を、前記締付けが緩んでも維持できる。なお、以上説明した点以外の構成は、第１実施形態の照明器具１と同じである。
【００３９】
したがって、この第２実施形態においても、本発明の課題を解決することができる。
【００４０】
図８〜図１０は本発明の第３実施形態を示している。
【００４１】
第３実施形態では、取付け金具２１のベース金具部材２２は、例えば下向きの折り曲げフランジ２２ｅを有して真直ぐに作られている。なお、折り曲げフランジ２２ｅは上向きに設けることもできる。このベース金具部材２２の長手方向両端部には、その幅を幅方向両側から狭める切り欠き２２ｆが夫々設けられている。これらの切り欠き２２ｆを境に端側の部分が連結部２２ｂとして使用され、これら連結部２２ｂ間の部分が接続部２２ａとして用いられている。したがって、切り欠き２２ｆによって分断された折り曲げフランジ２２ｅの内で、連結部２２ｂに位置する部分は、折り曲げフランジ２２ｃ、２２ｄとして用いられている。これらの折り曲げフランジ２２ｃ、２２ｄには夫々小孔からなる単一の連結孔２３が設けられている。
【００４２】
端金具部材２５は、その幅方向両側部に連結部２２ｂに嵌合する嵌合溝４１が夫々設けられている。嵌合溝４１は、上下方向に延びていて、その上下両端は開放されている。この嵌合溝４１は、端金具部材２５の側縁部４１ａと、これから裏側に向けて直角に折り曲げられた第１壁部４１ｂと、この壁部４１ｂから直角に折り曲げられて側縁部４１ａの裏面に対向する第２壁部４１ｃとで区画されている。第１、第２の壁部４１ｂ、４１ｃとは上下方向に延びる折り曲げフランジをなしている。
【００４３】
端金具部材２５の幅方向に相対向する第１壁部４１ｂの夫々には、位置決め部として使用される複数例えば２個の位置決め孔４２、４３、又は４４、４５が上下に位置をずらして設けられている。各位置決め孔４２〜４５の大きさは連結孔２３と同じである。各位置決め孔４２〜４５は夫々異なる高さ位置に設けられている。具体的には、図１０に示すように相対向する第１壁部４１ｂの内の一方の第１壁部４１ｂの位置決め孔４２が最も高い位置に設けられ、他方の第１壁部４１ｂの位置決め孔４４が次に低い位置に設けられ、一方の第１壁部４１ｂの位置決め孔４３が更に低い位置に設けられ、他方の第１壁部４１ｂの位置決め孔４５が最も低い位置に設けられている。このように相対向する第１壁部４１ｂに非対称に設けられる各位置決め孔４２〜４５の高さ位置は任意に設定できる。
【００４４】
端金具部材２５は連結部２２ｂに被嵌して設けられる。この嵌合状態では、端金具部材２５の一方の第１壁部４１ｂが、連結部２２ｂの折り曲げフランジ２２ｃに重ねられるとともに、端金具部材２５の他方の第１壁部４１ｂが、連結部２２ｂの折り曲げフランジ２２ｄに重ねられる。なお、この場合、第２壁部４１ｃは切り欠き２２ｆに入り込んで連結部２２ｂに引っ掛かるので、端金具部材２５が外れ止めされる。
【００４５】
こうした重なり状態の端金具部材２５は連結手段として例えばスナップ式の留め具４６（図９参照）を一つ用いてベース金具部材２２に固定される。留め具４６は、連結部材としての軸部４６ａに、この軸部４６ａに両端が固定された弾性変形可能なくの字状係止凸部４６ｂを複数設けて作られている。この留め具４６は、位置決め孔４２〜４５の内のいずれか一つ及びこれに対向する連結孔２３に挿入されてベース金具部材２２と端金具部材２５とを連結する。この場合、各係止凸部４６ｂは、弾性変形を伴って連結孔２３に通された直後に復元して、連結孔４６から外れ止めされる。
【００４６】
第３実施形態では、端金具部材２５の高さに応じて、位置決め孔４２、４３のいずれかが折り曲げフランジ２２ｃの連結孔２３に対向し、かつ、これらの高さとは異なる高さ位置に端金具部材２５を配置した際に、その高さに応じて位置決め孔４４、４５のいずれかが折り曲げフランジ２２ｄの連結孔２３に対向する。このため、留め具４６が通される一つの位置決め孔とこれに対向する連結孔とを選択することにより、ベース金具部材２２に対する端金具部材２５の高さ位置を複数段階例えば４段階を変えることができる。したがって、この第３実施形態においても、本発明の課題を解決することができる。
【００４７】
更に、第３実施形態では、ベース金具部材２２の長手方向両端部の連結部２２ｂが、接続部２２ａの延長上にあるので、ベース金具部材２２に大きな曲げ加工を要することがなく、その加工が容易で低コストで得ることが可能である。なお、
以上説明した点以外の構成は、第１実施形態の照明器具１と同じである。
【００４８】
図１１及び図１２は本発明の第４実施形態を示している。
【００４９】
第４実施形態では、連結部２２ｂに位置決め部として複数例えば４個のねじ孔５１〜５４が互いに独立して設けられている。これらのねじ孔５１〜５４の内で、ねじ孔５１、５２は上下に並んでいる。他のねじ孔５３、５４は、ねじ孔５１、５２に対して連結部２２ｂの幅方向にずれた位置で上下に並んでいる。ねじ孔５１、と他のねじ孔５３、５４との高さ位置は夫々異なっており、これにより、ねじ孔５１、５２と他のねじ孔５３、５４とは連結部２２ｂの幅方向に非対称に設けられている。
【００５０】
連結部２２ｂの外面に重ね合わせて連結される端金具部材２５の幅Ａは、連結部２２ｂの折り曲げフランジ２２ｃ、２２ｄの相対向する面間の寸法Ｂと同じである。このため、端金具部材２５の両側縁（言い換えれば、幅方向両端の縁）は、折り曲げフランジ２２ｃ、２２ｄの相対向する面に接触している。端金具部材２５の上部には一対の連結孔２３ａ、２３ｂが互いに独立して設けられている。これらの連結孔２３ａ、２３ｂは同じ高さ位置又は異なる高さ位置に設けることができる。一方の連結孔２３ａはねじ孔５１又は５２に選択的に対向され、他方の連結孔２３ｂはねじ孔５３又は５４に選択的に対向される。
【００５１】
連結ねじ３１は、いずれか一方の連結孔２３ａ又は２３ｂを通って、この連結孔に対向し選択されたねじ孔５１〜５４の内の一つにねじ込まれる。この連結ねじ３１の締付けにより、４段階の内の一つの高さ位置を選択して端金具部材２５が上下方向に動かないようにベース金具部材２２に連結されて、取付け金具２１が組立てられる。なお、以上説明した点以外の構成は、第１実施形態の照明器具１と同じである。
【００５２】
したがって、この第４実施形態においても、本発明の課題を解決することができる。
【００５３】
図１３〜図１６は本発明の第５実施形態を示している。
【００５４】
第５実施形態では、連結部２２ｂに位置決め部として例えば位置決め孔６１が開けられており、この孔６１の下縁は階段状に作られている。この下縁が有する複数の位置決め段部６２〜６５は、連結部２２ｂの幅方向に沿って互いに異なる高さ位置に設けられている。
【００５５】
図１４に示すように端金具部材２５の幅方向両側縁には、連結部２２ｂの幅方向両側縁に被嵌する嵌合溝６６ａを有する折り曲げフランジ６６が形成されている。端金具部材２５の上部には、四角い通孔６７が開けられているとともに、この通孔６７と対向する取付けばね６８が取付けられている。
【００５６】
図１４及び図１６に示すように取付けばね６８は、位置決め段部６２〜６５と同数の下向きのばね片７１〜７４を連結手段として有している。隣接するばね片７１〜７４間には下端開放のスロット７５が設けられていて、各ばね片７１〜７４は独立して動作可能である。
【００５７】
各ばね片７１〜７４は、対応する位置決め段部６２〜６５上に着座可能な座り端部７１ａ〜７４ａを個別に有しているとともに、この上方に位置して図１５に代表して示すように例えば断面く字状をなす曲げ部７１ｂ〜７４ｂを個別に有している。各座り端部７１ａ〜７４ａは、同じ高さに設けられていて、位置決め孔６１に通される連結部材として機能する。曲げ部７１ｂ〜７４ｂは端金具部材２５の幅方向に沿って夫々異なる高さに設けられている。具体的には、曲げ部７４ｂが最も低い位置に設けられ、曲げ部７４ｂが次に高い位置に設けられ、曲げ部７２ｂが更に高い位置に設けられ、曲げ部７１ｂが最も高い位置に設けられている。
【００５８】
端金具部材２５をベース金具部材２２の連結部２２ｂに下方から上向きに被嵌させる際に、座り端部７１ａ〜７４ａのいずれか一つを選択して、それに対応する高さ位置の位置決め段部に着座させることにより、端金具部材２５をベース金具部材２２の連結部２２ｂに連結できる。この連結状態の一例が図１５で示されている。
【００５９】
この図１５では、座り端部７４ａが位置決め孔６１を通ってこの孔６１の最も低い位置の位置決め段部６２に着座した場合を例示している。この状態で着座したばね片７４の曲げ部７４ｂは位置決め孔６１の上縁に引っ掛かっていて、それにより、連結部２２ｂに対して端金具部材２５が不用意に上下動しないように連結部２２ｂと端金具部材２５とが連結されている。なお、この状態で、他のばね片７１〜７３はいずれも弾性変形して連結部２２ｂの裏面に配置されているので、それらの座り端部７１ａ〜７３ａは対応する位置決め段部６３〜６５から外れていて連結部２２ｂの裏面に接している。
【００６０】
このため、図１５に示す状態からさらに端金具部材２５を強く押上げる場合には、ばね片７１が弾性変形してその曲げ部７１ｂが連結部２２ｂの裏側に外れるので、このばね片７１に隣接したばね片７２の座り端部７２ａが、それに対応した高さ位置の位置決め段部６３に着座する。これにより、位置決め段部６２、６３の高さ寸法差分だけ端金具部材２５が上方に配置されて、それに応じた高さの支持バーに端金具部材２５を適合させることができる。同様の押上げ操作により、ばね片７３の座り端部７３ａをそれに対応した高さ位置の位置決め段部６４に着座させる場合にも、更なる押上げ操作により、ばね片７４の座り端部７４ａをそれに対応した最も高い位置の位置決め段部６５に着座させる場合にも、それに応じた高さの支持バーに端金具部材２５を適合させることができる。
【００６１】
以上のような着座位置の選択により、端金具部材２５を上下方向に不用意に動かないようにベース金具部材２２に連結して、取付け金具２１を組立てることができる。この場合、格別にねじやボルト・ナット或いはスナップ式の留め具を用いてその取付け操作を要することがないので、容易に高さ位置の調整を行うことが可能である。なお、以上説明した点以外の構成は、第１実施形態の照明器具１と同じである。
【００６２】
したがって、この第５実施形態においても、本発明の課題を解決することができる。
【００６３】
本発明は上記各実施形態には制約されない。例えば、位置決め部と連結孔とは上記各実施形態とは相対的に逆の位置関係にして、したがって、例えば複数のねじ孔等からなる位置決め部をベース金具部材に設けるとともに、連結孔を端金具部材に設けて実施することもできる。
【００６４】
【発明の効果】請求項１記載の発明によれば、支持バーの係止凸部に上方から嵌合して載置される嵌合部を有して、器具本体に固定されたベース金具部材の端部に連結される端金具部材を、支持バーの高さに適合させてベース金具部材の端部に連結できるから、高さが異なる複数種の支持バー上に設置できるとともに、端金具部材は上下方向に動かないように連結されているので、地震時などにがたつくことが抑制され支持バー上への設置状態の安定性が高い照明器具を提供できる。
【００６５】
請求項２記載の発明によれば、端金具部材の幅方向に沿う外力が連結手段に作用し難くなって、例えば連結手段が緩むこと等が抑制されるので、ベース金具部材の端部と端金具部材との連結状態を確実に保持可能であり、したがって、支持バー上への設置状態の安定性が高い照明器具を提供できる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る照明器具を示す断面図。
【図２】図１の照明器具が備える取付け金具を示す斜視図。
【図３】図２の取付け金具の一部を分解して示す斜視図。
【図４】第１実施形態に係る照明器具を示す斜視図。
【図５】（Ａ）〜（Ｃ）は夫々異なる支持バーを示す断面図。
【図６】本発明の第２実施形態に係る照明器具が備える取付け金具を示す斜視図。
【図７】図６の取付け金具の一部を分解して示す斜視図。
【図８】本発明の第３実施形態に係る照明器具を示す断面図。
【図９】図８の照明器具が備える取付け金具の一部を分解して示す斜視図。
【図１０】図９の取付け金具の端金具部材の上部を一部切欠いて示す正面図。
【図１１】本発明の第４実施形態に係る照明器具を示す断面図。
【図１２】図１１の照明器具が備える取付け金具の一部を分解して示す斜視図。
【図１３】本発明の第５実施形態に係る照明器具を示す断面図。
【図１４】図１３の照明器具が備える取付け金具の一部を分解して示す
【図１５】図１４の取付け金具の端金具部材の一部を示す断面図。
【図１６】図１４の取付け金具が有する取付けばねを示す正面図。
【符号の説明】
１…照明器具、２…支持バー、２ａ…器具受け部、２ｂ…係止凸部、１１…器具本体、２１…取付け金具、２２…ベース金具部材、２２ａ…接続部、２２ｂ…連結部、２２ｃ、２２ｄ…折り曲げフランジ、２３…連結孔、２５…端金具部材、２５ａ、２５ｂ…折り曲げフランジ、２６〜２８…ねじ（位置決め部）、２９…嵌合部、３１…連結ねじ（連結部材である連結手段）、３５…長孔（位置決め部）、３６…ボルト（連結部材である連結手段）、３７…ナット（連結手段）、４１…嵌合溝、４１ｂ…第１壁部（折り曲げフランジ）、４１ｃ…第１壁部（折り曲げフランジ）、４２〜４５…位置決め孔、４６…留め具（連結手段）、４６ａ…軸部（連結部材）、５１〜５４…ねじ孔、２３ａ、２３ｂ…連結孔、６１…位置決め孔（位置決め部）、６２〜６５…位置決め段部、６８…取付けばね（連結手段）、７１〜７４…ばね片（連結手段）、７１ａ〜７４ａ…座り端部（連結部材）、７１ｂ〜７４ｂ…曲げ部[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus installed on a support bar on a system ceiling, for example.
[0002]
2. Description of the Related Art Various support bars having different heights have been provided as support bars for a system ceiling. Thus, there is known a lighting fixture which can be installed on a system ceiling in such a manner as to be adapted to various support bars having different heights without requiring any adjustment at a construction site (for example, see Patent Document 1).
[0003]
In the lighting fixture of Patent Literature 1, a fitting fixture fixed to the fixture main body is provided with a fitting fitting portion having both ends bent downward and vertical at both ends. Further, an elongated hole extending in the up-down direction is provided in one of the metal fitting mounting portion and the base portion of the installation metal fitting overlapped with the metal fitting mounting portion, and a shaft-like connecting body such as a rivet penetrating the long hole is provided in the other. Installed. Thus, the mounting bracket is mounted on the bracket mounting portion so as to be movable in the vertical direction. For this reason, as the mounting bracket is placed on the support bar on the ceiling, the bracket is freely moved in the vertical direction, and the height position of the mounting bracket can be adjusted to the height of the support bar.
[0004]
[Patent Document 1]
JP-A-8-180724 (paragraphs 0014-0015, 0017, 0070-0073, FIGS. 10 to 13)
[0005]
In the lighting apparatus disclosed in Patent Document 1, the mounting bracket mounted on the support bar is vertically movably mounted on the bracket mounting portion, so that it is mounted on the support bar. In this state, the lighting fixture can move up and down based on the movement at the connection between the installation fitting and the fitting attachment part. For this reason, the lighting fixture is likely to rattle during an earthquake or the like, and it is difficult to maintain a stable installation state.
[0006]
The problem to be solved by the present invention is not only to be able to be installed on a plurality of types of support bars having different heights, but also to obtain a lighting fixture having a high stability of installation on a support bar. .
[0007]
According to a first aspect of the present invention, there is provided an apparatus comprising: a tool main body; and a plurality of mounting brackets fixed to the tool main body. A lighting fixture supported on a support bar having
A base metal member fixed to the instrument body perpendicular to the longitudinal direction of the instrument body, and a fitting portion on which the fitting piece is fitted and placed from above is provided. A pair of end fitting members, a positioning portion provided at a different height position along the width direction of the fitting member, at both end portions of the base fitting member and one of the end fitting members, And a connecting means having a connecting member passed through a predetermined portion of the positioning portion and connecting the other fitting member and the one fitting member so as not to move up and down.
[0008]
According to the first aspect of the present invention, the mounting bracket is formed by connecting the end fitting members to both ends of the base fitting member by connecting means, and the end fitting members select and connect positioning portions having different height positions. Since the end fitting member is connected to the end of the base fitting member by the means, the end fitting member can be arranged at a height corresponding to the height position of the selected positioning portion. This makes it possible to adjust the position of the fitting portion of the end fitting member to the height of the support bar that supports the lighting fixture, so that the lighting fixture that can be installed on a plurality of types of support bars having different heights Can be provided.
[0009]
Then, the connecting means connects the end fitting member to the end of the base fitting member by passing the connecting member through a predetermined portion of the positioning portion, so that the end fitting member can be connected so as not to move in the vertical direction. Thereby, the lighting fixture is prevented from rattling during an earthquake or the like due to the connection between the end fitting member and the base fitting member, and the stability of the installation state on the support bar is enhanced.
[0010]
The invention according to claim 2 is characterized in that bending flanges are provided on both sides in the width direction of the one metal member and extend in the vertical direction and are opposed to each other in the width direction. It is characterized by being brought into contact with a bending flange.
[0011]
According to the second aspect of the present invention, the bending flange of one of the metal members is held so as to sandwich the other metal member in the width direction, so that the movement of the metal member in the width direction with respect to the end of the base metal member can be prevented. Accordingly, it becomes difficult for an external force along the width direction of the end fitting member to act on the connecting means, and for example, it is possible to prevent the connecting means from becoming loose.
[0012]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 in FIGS. 1 and 4 indicates a lighting fixture for a system ceiling.
[0013]
Reference numeral 4 in FIGS. 1 and 5A to 5C denotes a support bar on the system ceiling. The support bar 2 is suspended from a ceiling slab (not shown) via a suspending member, and has an instrument receiving portion 2a that projects horizontally and a locking projection 2b that projects upward. As the support bar 2, a so-called T-bar illustrated in FIGS. 5A to 5C can be preferably used. The support bar 2 in FIGS. 5A and 5B is made of steel, and the support bar 2 in FIG. 5C is made of an aluminum alloy. The height h (the dimension from the upper surface of the instrument receiving portion 2a to the upper end of the locking projection 2b) of the support bar 2 shown in FIGS. 5A to 5C is different. The height h of the support bar 2 in FIG. 5A is 40 mm, the height h of the support bar 2 in FIG. 5B is 37 mm, and the height h of the support bar 2 in FIG. 5C is 41 mm. The luminaire 1 is installed as described below over mutually parallel support bars 2 arranged adjacent to the system ceiling.
[0014]
The lighting fixture 1 includes a fixture main body 11 and a plurality of, for example, two mounting brackets 21. The illustrated lighting fixture 1 is an open-bottomed fixture, but may alternatively be a lighting fixture with a light control body having a built-in light control body such as a baffle in a lower open part of the fixture main body 11, or Alternatively, the lighting device may be a lighting device in which a light control body that covers an open portion on the lower surface is disposed below the device main body 11.
[0015]
The appliance main body 11 includes a main body 12 made of sheet metal bent so that both ends and the lower surface in the longitudinal direction are opened, and a main body end plate 13 attached with the main body 12 closed at both longitudinal ends. ing. Reference numeral 14 in FIGS. 1 and 4 denotes a reinforcing edge of a groove structure which is formed in a square frame shape and surrounds the lower surface opening of the instrument body 11 and opens upward.
[0016]
A ceiling reflector 16 is attached to the inside of the fixture main body 11 via a plurality of (only one is shown in FIG. 1) support brackets 15. The ceiling reflector 16 covers the lighting device 17 fixed to the lower surface of the ceiling wall 12a of the main body 12. In FIG. 1, reference numeral 18 denotes a lamp socket attached to each of both longitudinal end portions of the apparatus main body 11. These sockets 18 are provided through the ceiling reflector 16 and support a straight tube fluorescent lamp (not shown) at a position below the ceiling reflector 16.
[0017]
Each mounting fitting 21 includes a single base fitting member 22 and a pair of end fitting members 25 as shown in FIG. Each of the metal fitting members 22 and 25 is made of a relatively thick steel plate having a thickness of, for example, 1 mm.
[0018]
The base metal member 22 is formed in a substantially U-shape by bending downward connecting portions 22b at both longitudinal ends of a connecting portion 22a extending in the horizontal direction. Outwardly bent flanges 22c and 22d are provided on both side edges in the width direction of the base metal member 22, respectively. These flanges 22c and 22d are continuous over the connecting portion 22a and the connecting portion 22b, and reinforce the base metal member 22. Connection holes 23 are respectively formed at lower ends of both connection portions 22b. As shown in FIGS. 2 and 3, the connection hole 23 is formed by a single elongated hole extending horizontally along the width direction of the connection portion 22b.
[0019]
The base metal member 22 is fixed to the instrument body 11 at right angles to the longitudinal direction of the instrument body 11. The fixing of the base metal member 22 to the appliance main body 11 is performed via a plurality of screws (not shown) screwed through the ceiling wall 12a upward and into the connection portions 22a stacked across the ceiling wall 12a. . As shown in FIG. 1, the distance between the connecting portions 22 b of the base metal member 22 is substantially equal to the distance between the locking projections 2 b of the adjacent support bars 2, and is larger than the maximum width of the instrument body 11. a little big.
[0020]
As shown in FIG. 3, bending flanges 25 a and 25 b extending in the vertical direction and facing in the width direction are provided on both side edges in the width direction of the pair of end fitting members 25. The width A of the end fitting member 25 is equal to the width B between the bent flanges 22c and 22d of the connecting portion 22b. Thus, the end fitting member 25 is combined with the connecting portion 22b by bringing the bending flanges 25a and 25b forming the both side edges into contact with the bending flanges 22c and 22d of the connecting portion 22b.
[0021]
On the upper part of the end fitting member 25, a positioning portion is provided between the bending flanges 25a and 25b. The positioning portion is formed by, for example, a plurality of, specifically, three screw holes 26 to 28. These screw holes 26 to 28 are provided so that the position of the end fitting member 25 in the width direction and the height position are different. In other words, the screw holes 26 to 28 are provided at different height positions along the width direction of the end fitting member 25.
[0022]
The screw hole 27 at the intermediate height position is used when the lighting fixture 1 is supported on the support bar 2 in FIG. 5B, which is most frequently used, and the screw hole 26 at a position higher than the screw hole 27 is shown in FIG. 5 is used when supporting the lighting fixture 1 on the support bar 2 whose height H is lower than the support bar 2 of FIG. 5B, and the screw hole 28 at a position lower than the screw hole 27 is a support bar of FIG. The lighting device 1 is used to support the lighting fixture 1 on a support bar 2 having a height H higher than 2. Specifically, the screw hole 26 at the highest position is used when the lighting fixture 1 is supported by the support bar 2 of FIG. 5B having the lowest height h in FIG. The screw hole 28 at the lowest position is used when the lighting fixture 1 is supported by the support bar 2 of FIG. 5C having the highest height h in FIG. The screw holes 27 at these intermediate height positions are used when the lighting fixture 1 is supported by the support bar 2 in FIG.
[0023]
At the lower part of the end fitting member 25, a fitting portion 29 which is fitted from above and is placed on the locking projection 2b of the support bar 2 is provided integrally, and the locking spring 30 is riveted. Installed. The fitting portion 29 has a protruding piece 29a opposed to the locking protrusion 2b from one side thereof, and an L-shaped member mounted on the locking protrusion 2b and facing the locking protrusion 2b from the other side. And the mounting piece 29b. The locking spring 30 is made of a metal spring plate. The lower portion of the spring 30 is bent to form a V-shaped locking end portion 30a so as to be hooked to the locking projection 2b from below.
[0024]
The mounting bracket 21 has a connecting screw 31 as a connecting member forming a connecting means. The screw 31 is screwed into the connection hole 23 and one screw hole 26 or 27 or 28 communicating with the connection hole 23 in a state where the end fitting member 25 is superimposed on the outer surface of the connection portion 22b. And the end fitting member 25. This connection is performed by selecting one screw hole specified in advance at the factory where the lighting fixture 1 is produced, not at the site where the lighting fixture 1 is installed. This is effective in greatly reducing the labor of a contractor when installing a large number of lighting fixtures 1 such as when installing the lighting fixtures 1 on a system ceiling of a building. The use of a fastening nut (not shown) that is screwed to the connection screw 31 and in contact with the surface of the end fitting member 25 is not prevented.
[0025]
The luminaire 1 provided with the mounting bracket 21 having the above-described configuration is carried into a mounting construction site of the luminaire 1, guided above the adjacent support bars 2 on the system ceiling, and aligned with these support bars 2. It is supported by the support bar 2 by being lowered in the state.
[0026]
In this support state, the reinforcing edge 14 of the instrument main body is placed on the instrument receiving portion 2a of the support bar 2, and the fitting portion 29 of the mounting fitting 21 is fitted from above into the locking projection 2b of the support bar 2. Then, the mounting piece 29b of the fitting portion 29 is mounted on the upper end of the locking projection 2b. At the same time, the locking spring 30 rides over the locking projection 2b downward, and its locking end 30a is opposed to the locking projection 2b from below. FIG. 1 shows a state in which the lighting fixture 1 is supported by the support bar 2 in this manner.
[0027]
The lighting fixture 1 supports the height position of the fitting portion 29 of the end fitting member 25 by screwing the connection screw 31 passing through the connection hole 23 into the screw hole 26 at the highest position as shown in FIG. It can be used in conformity with the height h of the bar 2. Further, by screwing the connection screw 31 passing through the connection hole 23 into the screw hole 28 at the lowest position, the height position of the fitting portion 29 of the end fitting member 25 is adjusted to the height of the support bar 2 shown in FIG. H can be used. Further, by screwing the connection screw 31 passing through the connection hole 23 into the screw hole 27 at the intermediate height position, the height position of the fitting portion 29 of the end fitting member 25 is adjusted to the height of the support bar 2 shown in FIG. And can be used by adapting to the height h.
[0028]
Thus, the end fitting member 25 can be connected to the connecting portion 22b of the base fitting member 22 by the connecting screw 31 by selecting any of the screw holes 26 to 28 having different height positions. The end fitting member 25 can be arranged at a height corresponding to the position. That is, since the position of the fitting portion 29 of the end fitting member 25 can be adjusted to the height h of the support bar 2 that supports the lighting fixture 1, the lighting fixture 1 can be supported by a plurality of types of support having different heights h. It can be installed on the bar 2.
[0029]
The common use of the lighting fixture 1 makes it easy to manage the parts of the lighting fixture 1 and also suppresses an erroneous attachment of the mounting bracket 21 at the time of assembling the lighting fixture 1.
[0030]
The screw holes 26 to 28 are independent from each other, and the connecting screw 31 connects the end fitting member 25 and the base fitting member 22 through a selected predetermined screw hole. The member 25 can be prevented from moving in the vertical direction. In addition, since the screw holes 26 to 28 are independent of each other, the end fitting member 25 can be connected accurately according to the height 12 thereof. This suppresses rattling of the lighting fixture 1 at the time of an earthquake or the like due to the connection between the end fitting member 25 and the base fitting member 22, and prevents the lighting fixture 1 from being installed on the support bar 2. Stability is increased. On the other hand, when the screw holes 26 to 28 are provided along the vertical direction, for example, these screw holes 26 to 28 are continuously formed as the elongated holes described in the related art, which is not preferable.
[0031]
Since the end fitting member 25 has the bending flanges 25a and 25b, which are the left and right side edges thereof, in contact with the mutually opposing surfaces of the bending flanges 22c and 22d extending in the vertical direction of the connecting portion 22b, the width direction of the end fitting member 25 Is less likely to act on the connection screw 31, and the connection screw 31 can be prevented from loosening. For this reason, it is possible to reliably maintain the connection state between the connection part 22b, which is the end of the base metal member 22, and the end metal member 25. Therefore, also in this respect, the stability of the installation state of the lighting fixture 1 on the support bar 2 can be improved. The same applies to the case where the bending flanges 25a and 25b are omitted and the left and right side edges of the end fitting member 25 are brought into contact with the bending flanges 22c and 22d.
[0032]
Also, when connecting the base fitting member 22 and the end fitting member 25 at the factory, the end fitting member 25 can be moved along the bent flanges 22c and 22d, so that the end fitting member 25 is connected to the connecting portion 22b. Does not incline so as to rotate around the connection screw 31 with respect to. This facilitates the alignment between the selected screw hole and the connection hole 23. Moreover, since the end fitting member 25 does not rotate even when the connecting screw 31 is tightened, there is no need to specially press the end fitting member 25. Therefore, the base fitting member 22 and the end fitting member 25 can be easily connected.
[0033]
In the manufacture of the lighting fixture 1, when a plurality of types of other end fitting members 25 in which the arrangement of the screw holes 26 to 28 is different from those described above are prepared and placed, Thus, the base metal member 22 of the mounting metal 21 can be a common component. When the base metal member 22 needs to bend the connecting portion 22b, the cost increases due to the bending. Therefore, as described above, the common component can be used as the mounting metal 21 and the metal 21. It is preferable from the viewpoint of reducing the cost of the lighting fixture 1 provided.
[0034]
Hereinafter, each of the second to fifth embodiments of the present invention will be described. Since these embodiments are basically the same as the first embodiment, the same components are denoted by the same reference numerals as those of the first embodiment, and the description of the configurations and operations is omitted. This will be described with reference to FIGS.
[0035]
6 and 7 show a second embodiment of the present invention.
[0036]
In the second embodiment, an inclined slot 35 is provided as a positioning portion of the end fitting member 25 as shown in FIG. Each part of the oblique hole 35 is substantially the same as that provided at a different height position along the width direction of the end fitting member 25. Therefore, for example, when the inclined upper end portion of the long hole 35 is aligned with the end portion of the connection hole 23 near the bending flange 22c, it is suitable to support the lighting device 1 on the support bar 2 shown in FIG. If the inclined lower end of the long hole 35 is aligned with the end of the connecting hole 23 near the bent flange 22d, the lighting device 1 can be adapted to be supported by the support bar 2 shown in FIG. In the case where the intermediate portion of the long hole 35 is aligned with the intermediate portion of the connection hole 23, it can be adapted to support the lighting fixture 1 on the support bar 2 shown in FIG. Of course, since it is the elongated hole 35, it can be adapted to a support bar of another height within the height range between the inclined upper end and the inclined lower end.
[0037]
Further, in the second embodiment, as a connecting means for connecting the base fitting member 22 and the end fitting member 25 to assemble the mounting fitting 21, a connecting member passed through the aligned connecting hole 23 and the elongated hole 35 is used. A bolt 36 and a nut 37 screwed to the bolt 36 are used.
[0038]
In the second embodiment, even if the bolt 36 and the nut 37 are loosely tightened, if the bolt 36 moves in the vertical direction, the bolt 36 must be longer than the load direction (vertical direction) with respect to the lighting fixture 1. It must move laterally along the hole 35. However, since the long hole 35 is provided obliquely at a gentle angle and the end fitting member 25 is prevented from moving in the width direction by the bending flanges 22c and 22d of the connecting portion 22b, the lateral direction perpendicular to the load direction is provided. The movement of the bolt 36 is suppressed. Thereby, the assembled state in which the end fitting member 25 is connected to the connecting portion 22b by the tightening of the bolt 36 and the nut 37 so as not to move in the vertical direction can be maintained even if the tightening is loosened. The configuration other than the points described above is the same as the lighting fixture 1 of the first embodiment.
[0039]
Therefore, also in the second embodiment, the problem of the present invention can be solved.
[0040]
8 to 10 show a third embodiment of the present invention.
[0041]
In the third embodiment, the base metal member 22 of the mounting metal 21 is formed straight, for example, with a downward bent flange 22e. Note that the bending flange 22e may be provided upward. Notches 22f are provided at both ends in the longitudinal direction of the base metal member 22 to reduce the width from both sides in the width direction. A portion on an end side of the notch 22f is used as a connecting portion 22b, and a portion between the connecting portions 22b is used as a connecting portion 22a. Therefore, in the bending flange 22e divided by the notch 22f, the portion located at the connecting portion 22b is used as the bending flanges 22c and 22d. Each of the bent flanges 22c and 22d is provided with a single connection hole 23 composed of a small hole.
[0042]
The end fitting member 25 is provided with fitting grooves 41 on both sides in the width direction to be fitted to the connecting portions 22b. The fitting groove 41 extends in the up-down direction, and its upper and lower ends are open. The fitting groove 41 has a side edge portion 41a of the end fitting member 25, a first wall portion 41b bent at a right angle from the back side thereof, and a side edge portion 41a bent at a right angle from the wall portion 41b. It is partitioned by the second wall portion 41c facing the back surface. The first and second wall portions 41b and 41c form a bent flange extending in the vertical direction.
[0043]
In each of the first wall portions 41b opposed to each other in the width direction of the end fitting member 25, a plurality of, for example, two positioning holes 42, 43, or 44, 45 used as positioning portions are provided with their positions shifted vertically. Have been. The size of each of the positioning holes 42 to 45 is the same as that of the connection hole 23. Each of the positioning holes 42 to 45 is provided at a different height position. Specifically, as shown in FIG. 10, the positioning hole 42 of one of the first wall portions 41b opposed to each other is provided at the highest position, and the positioning of the other first wall portion 41b is performed. The hole 44 is provided at the next lower position, the positioning hole 43 of one first wall portion 41b is provided at a lower position, and the positioning hole 45 of the other first wall portion 41b is provided at the lowest position. . In this way, the height positions of the positioning holes 42 to 45 provided asymmetrically in the opposing first wall portions 41b can be arbitrarily set.
[0044]
The end fitting member 25 is provided so as to be fitted to the connecting portion 22b. In this fitting state, one first wall portion 41b of the end fitting member 25 is overlapped on the bent flange 22c of the connecting portion 22b, and the other first wall portion 41b of the end fitting member 25 is connected to the connecting portion 22b. It is superimposed on the bending flange 22d. In this case, since the second wall portion 41c enters the notch 22f and is hooked on the connecting portion 22b, the end fitting member 25 is prevented from coming off.
[0045]
The end fitting member 25 in such an overlapping state is fixed to the base fitting member 22 using, for example, one snap-type fastener 46 (see FIG. 9) as a connecting means. The fastener 46 is formed by providing a plurality of non-resiliently deformable character-shaped locking projections 46b having both ends fixed to the shaft portion 46a as a connecting member. The fastener 46 is inserted into any one of the positioning holes 42 to 45 and the connection hole 23 facing the same, and connects the base metal member 22 and the end metal member 25. In this case, each locking projection 46 b is restored immediately after passing through the connection hole 23 with elastic deformation, and is prevented from being detached from the connection hole 46.
[0046]
In the third embodiment, one of the positioning holes 42 and 43 faces the connection hole 23 of the bending flange 22c according to the height of the end fitting member 25, and the end is located at a height different from these heights. When the metal member 25 is arranged, one of the positioning holes 44 and 45 faces the connection hole 23 of the bending flange 22d according to the height. Therefore, the height position of the end fitting member 25 with respect to the base fitting member 22 can be changed in a plurality of steps, for example, four steps, by selecting one positioning hole through which the fastener 46 is passed and a connecting hole facing the positioning hole. Can be. Therefore, also in the third embodiment, the problem of the present invention can be solved.
[0047]
Furthermore, in the third embodiment, since the connecting portions 22b at both ends in the longitudinal direction of the base metal member 22 are on the extension of the connecting portion 22a, the base metal member 22 does not require a large bending process. It can be obtained easily and at low cost. In addition,
The configuration other than the points described above is the same as the lighting fixture 1 of the first embodiment.
[0048]
FIG. 11 and FIG. 12 show a fourth embodiment of the present invention.
[0049]
In the fourth embodiment, a plurality of, for example, four screw holes 51 to 54 are provided independently of each other as positioning portions in the connecting portion 22b. Among the screw holes 51 to 54, the screw holes 51 and 52 are arranged vertically. The other screw holes 53 and 54 are vertically arranged at positions shifted from the screw holes 51 and 52 in the width direction of the connecting portion 22b. The height positions of the screw hole 51 and the other screw holes 53 and 54 are different from each other, whereby the screw holes 51 and 52 and the other screw holes 53 and 54 are asymmetrical in the width direction of the connecting portion 22b. Is provided.
[0050]
The width A of the end fitting member 25 connected to the outer surface of the connecting portion 22b so as to overlap with the outer surface of the connecting portion 22b is the same as the dimension B between the opposing surfaces of the bent flanges 22c and 22d of the connecting portion 22b. Therefore, both side edges (in other words, edges at both ends in the width direction) of the end fitting member 25 are in contact with the opposing surfaces of the bending flanges 22c and 22d. A pair of connecting holes 23a and 23b are provided independently of each other at an upper portion of the end fitting member 25. These connection holes 23a and 23b can be provided at the same height position or at different height positions. One connecting hole 23a is selectively opposed to the screw hole 51 or 52, and the other connecting hole 23b is selectively opposed to the screw hole 53 or 54.
[0051]
The connecting screw 31 passes through one of the connecting holes 23a or 23b and is screwed into one of the selected screw holes 51 to 54 facing the connecting hole. By tightening the connection screw 31, one of the four height positions is selected and the end fitting member 25 is connected to the base fitting member 22 so as not to move in the vertical direction, and the mounting fitting 21 is assembled. The configuration other than the points described above is the same as the lighting fixture 1 of the first embodiment.
[0052]
Therefore, also in the fourth embodiment, the problem of the present invention can be solved.
[0053]
13 to 16 show a fifth embodiment of the present invention.
[0054]
In the fifth embodiment, for example, a positioning hole 61 is formed as a positioning portion in the connecting portion 22b, and the lower edge of the hole 61 is formed in a step shape. The plurality of positioning step portions 62 to 65 of the lower edge are provided at different height positions along the width direction of the connecting portion 22b.
[0055]
As shown in FIG. 14, bent flanges 66 having fitting grooves 66 a to be fitted on both widthwise edges of the connecting portion 22 b are formed on both widthwise edges of the end fitting member 25. A square through hole 67 is formed in the upper part of the end fitting member 25, and a mounting spring 68 facing the through hole 67 is mounted.
[0056]
As shown in FIGS. 14 and 16, the mounting spring 68 has the same number of downward spring pieces 71 to 74 as the positioning steps 62 to 65 as connecting means. A slot 75 with an open lower end is provided between the adjacent spring pieces 71 to 74, and each of the spring pieces 71 to 74 can operate independently.
[0057]
Each of the spring pieces 71 to 74 individually has a seating end 71a to 74a which can be seated on the corresponding positioning step 62 to 65, and is located above this as shown in FIG. For example, bent portions 71b to 74b each having a V-shaped cross section are individually provided. Each of the sitting ends 71 a to 74 a is provided at the same height and functions as a connecting member that is passed through the positioning hole 61. The bent portions 71b to 74b are provided at different heights along the width direction of the end fitting member 25, respectively. Specifically, the bent portion 74b is provided at the lowest position, the bent portion 74b is provided at the next higher position, the bent portion 72b is provided at a higher position, and the bent portion 71b is provided at the highest position. I have.
[0058]
When fitting the end fitting member 25 to the connecting portion 22b of the base fitting member 22 upward from below, one of the sitting ends 71a to 74a is selected, and a positioning step at a height corresponding to the sitting end 71a to 74a is selected. , The end fitting member 25 can be connected to the connecting portion 22b of the base fitting member 22. An example of this connection state is shown in FIG.
[0059]
FIG. 15 illustrates a case where the sitting end portion 74a passes through the positioning hole 61 and sits on the positioning step 62 at the lowest position of the hole 61. The bent portion 74b of the spring piece 74 seated in this state is hooked on the upper edge of the positioning hole 61, and the connecting portion 22b and the connecting portion 22b are thereby prevented from inadvertently moving up and down with respect to the connecting portion 22b. The end fitting member 25 is connected. In this state, since the other spring pieces 71 to 73 are all elastically deformed and arranged on the back surface of the connecting portion 22b, their sitting ends 71a to 73a are moved from the corresponding positioning step portions 63 to 65. It comes off and is in contact with the back surface of the connecting portion 22b.
[0060]
Therefore, when the end fitting member 25 is further pushed upward from the state shown in FIG. 15, the spring piece 71 is elastically deformed, and the bent portion 71 b comes off the back side of the connecting portion 22 b. The seating end 72a of the spring piece 72 thus seated is positioned on the positioning step 63 at the corresponding height. Thereby, the end fitting member 25 is arranged above by the height dimension difference between the positioning step portions 62 and 63, and the end fitting member 25 can be adapted to the support bar having the height corresponding thereto. When the seating end 73a of the spring piece 73 is seated on the positioning step 64 at the height corresponding to the seating end 73a by the same push-up operation, the seating end 74a of the spring piece 74 is further raised by the push-up operation. The end fitting member 25 can be adapted to a support bar having a height corresponding to the highest position of the positioning step 65 corresponding thereto.
[0061]
By selecting the seating position as described above, the end fitting member 25 can be connected to the base fitting member 22 so that the end fitting member 25 is not accidentally moved in the vertical direction, and the mounting fitting 21 can be assembled. In this case, it is not necessary to use a screw, a bolt and a nut, or a snap-type fastener to perform the mounting operation, so that the height position can be easily adjusted. The configuration other than the points described above is the same as the lighting fixture 1 of the first embodiment.
[0062]
Therefore, also in the fifth embodiment, the problem of the present invention can be solved.
[0063]
The present invention is not limited to the above embodiments. For example, the positioning portion and the connection hole are in a relative reverse relation to those of the above-described embodiments. Therefore, a positioning portion including, for example, a plurality of screw holes is provided in the base metal member, and the connection hole is formed in the end metal member. It can also be implemented by being provided on a member.
[0064]
According to the first aspect of the present invention, the base fitting member fixed to the instrument main body having the fitting portion fitted from above and placed on the locking convex portion of the support bar. Since the end fitting member connected to the end of the base fitting member can be connected to the end of the base fitting member by adjusting to the height of the support bar, the end fitting member can be installed on a plurality of types of support bars having different heights. Since the light sources are connected so as not to move in the vertical direction, it is possible to provide a lighting device that is less likely to rattle during an earthquake or the like and has a high stability in the state of installation on the support bar.
[0065]
According to the second aspect of the present invention, the external force along the width direction of the end fitting member is less likely to act on the connecting means, and, for example, the loosening of the connecting means is suppressed. It is possible to reliably provide a connection state with the fitting member, and therefore, it is possible to provide a lighting fixture having a high stability of the installation state on the support bar.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a lighting device according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a mounting bracket included in the lighting apparatus of FIG. 1;
FIG. 3 is an exploded perspective view showing a part of the mounting bracket of FIG. 2;
FIG. 4 is a perspective view showing a lighting device according to the first embodiment.
FIGS. 5A to 5C are cross-sectional views showing different support bars.
FIG. 6 is a perspective view showing a mounting bracket provided in a lighting device according to a second embodiment of the present invention.
7 is an exploded perspective view showing a part of the mounting bracket of FIG. 6;
FIG. 8 is a sectional view showing a lighting device according to a third embodiment of the invention.
9 is an exploded perspective view showing a part of a mounting bracket provided in the lighting apparatus of FIG. 8;
FIG. 10 is a front view showing a part of the end fitting member of the mounting fitting shown in FIG.
FIG. 11 is a sectional view showing a lighting device according to a fourth embodiment of the present invention.
FIG. 12 is an exploded perspective view showing a part of a mounting bracket included in the lighting apparatus of FIG. 11;
FIG. 13 is a sectional view showing a lighting device according to a fifth embodiment of the present invention.
14 is an exploded view of a part of a mounting bracket included in the lighting apparatus of FIG.
FIG. 15 is a sectional view showing a part of an end fitting member of the mounting fitting of FIG. 14;
FIG. 16 is a front view showing a mounting spring of the mounting bracket of FIG. 14;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 2 ... Support bar, 2a ... Fixture receiving part, 2b ... Locking convex part, 11 ... Fixture main body, 21 ... Mounting bracket, 22 ... Base bracket member, 22a ... Connection part, 22b ... Connection part, 22c , 22d: bending flange, 23: connecting hole, 25: end fitting member, 25a, 25b: bending flange, 26-28: screw (positioning portion), 29: fitting portion, 31: connecting screw (connection as a connecting member) Means), 35: long hole (positioning portion), 36: bolt (connecting means as a connecting member), 37: nut (connecting means), 41: fitting groove, 41b: first wall portion (bending flange), 41c ... 1st wall part (bending flange), 42-45 ... positioning hole, 46 ... fastener (connection means), 46a ... shaft part (connection member), 51-54 ... screw hole, 23a, 23b ... connection hole, 61 … Positioning holes (Positioning ), 62 to 65 ... positioning step, 68 ... mounting spring (connecting means), 71 to 74 ... spring piece (connecting means), 71A～74a ... sat ends (connecting member), 71B～74b ... bent portion

Claims

In a lighting fixture comprising a fixture main body and a plurality of mounting brackets fixed to the fixture main body and supported on a support bar having a locking projection on an upper part,
The mounting bracket is
A base metal member fixed to the instrument body orthogonal to the longitudinal direction of the instrument body,
A pair of end fitting members provided with a fitting portion fitted and mounted on the locking projection from above,
Positioning portions provided at both ends of the base metal member and one of the end metal members at different heights along the width direction of the metal member,
A connecting means having a connecting member passed through a predetermined portion of the positioning portion and connecting the other fitting member and the one fitting member so as not to move up and down,
A lighting fixture comprising:

Bending flanges that extend in the vertical direction on both sides in the width direction of the one metal member and are opposed to each other in the width direction are provided, and both widthwise edges of the other metal member that extend in the vertical direction are brought into contact with the bending flange. The lighting fixture according to claim 1, wherein: