JP3817843B2

JP3817843B2 - Recessed ceiling lighting fixture

Info

Publication number: JP3817843B2
Application number: JP17472097A
Authority: JP
Inventors: 正直稗田; 吉見遠藤; 誉高井; 巌鳥羽; 崇文大石; 秀幸金澤
Original assignee: Toshiba Lighting and Technology Corp
Current assignee: Toshiba Lighting and Technology Corp
Priority date: 1997-06-30
Filing date: 1997-06-30
Publication date: 2006-09-06
Anticipated expiration: 2017-06-30
Also published as: JPH1125742A

Description

【０００１】
【発明の属する技術分野】
本発明は、直管形蛍光ランプを光源に使用する天井埋め込み形照明器具に係り、特に、器具本体に連結されてこの本体を天井裏に配置するために使用される固定金具を改良した天井埋め込み形照明器具に関する。
【０００２】
【従来の技術】
天井埋め込み形照明器具は、下面が開放された細長い箱構造の器具本体と、この本体の数箇所例えば長手方向の両端部に夫々連結された固定金具と、これら固定金具の下側に配置される反射板とを備えている。天井裏の吊りボルトに吊持される器具本体には、放電灯安定器等の点灯装置、端子台等の電気部品が予め内蔵されており、非常用の照明器具にあっては前記電気部品のほかにバッテリー、スイッチ、非常用点灯ユニット等の電気部品も内蔵されるようになっている。又、器具本体の長手方向両端部にはランプソケットが連結されたソケット取付け金具が夫々取付けられている。
【０００３】
固定金具は、器具本体に連結される金具主部と、天井の器具取付け孔の孔縁下面に引っ掛けられる一対の天井接触部と、これら金具主部と天井接触部の両者に対して折り曲げられて前記両者を一体に連続させた一対の立ち上がり部とを有していて、各部同じ幅で形成されている。金具主部に連結された器具本体の天井裏での高さ位置は立ち上がり部により決められるようになっている。反射板は金具主部にねじ込まれる化粧ねじにより取付けられ、この反射板内に突出される前記ランプソケットには直管形蛍光ランプが取外し可能に接続される。
【０００４】
この種の天井埋め込み形照明器具の器具本体及び前記各種の電気部品以外の部品、すなわち、複数の固定金具、反射板、及びソケット取付け金具等は、器具の取付け施工現場で器具本体を中心に組立てられ、この組立てを伴いながら天井への器具の装着が行われる。一方、細長い箱状をなす器具本体内の電気部品が配置された部分以外の本体内空間はデッドスペースとなっている。
【０００５】
そのため、照明器具を包装する場合には、前記デッドスペースを利用してソケット取付け金具及び固定金具を取出し可能に器具本体に収容することが行われており、その収容例が図９（Ａ）（Ｂ）又は図１０（Ａ）（Ｂ）に示されている。なお、これらの図中１は器具本体、１ａは吊りボルト導入孔、１ｂは電源線引き込み孔、２は固定金具、２ａは金具主部、２ｂは天井接触部、２ｃは立ち上がり部、２ｄは器具本体１への連結用係合爪、３はソケット取付け金具、４はランプソケット、５は点灯装置、６は端子台である。
【０００６】
図９（Ａ）（Ｂ）の例では、ランプソケット４が取付けられたソケット取付け金具３が、器具本体１の端板１ｃと吊りボルト導入孔１ａとの間のデッドスペースに収容され、２個の固定金具２は器具本体１の幅方向に並べて端子台６とこれに近い方の吊りボルト導入孔１ａとの間のデッドスペースに収容されている。この例においては２個の固定金具２を前記のように幅方向に並べるために、これらの金具２の一対の天井接触部２ｃを器具本体１の開放面と対向する壁１ｄに支持させた姿勢、言い換えれば、立ち上がり部２ｃが脚となるように立てて収容されている。
【０００７】
図１０（Ａ）（Ｂ）の例では、ソケット取付け金具３は図９（Ａ）（Ｂ）の例と同様に収容されるが、固定金具２はその一側面を壁１ｄに支持させた姿勢、言い換えれば、横倒しに寝かせた姿勢で収容されている。この場合、固定金具２の幅が器具本体１の高さ（深さ）寸法の大半を占めることから、一つの固定金具２のみが前記のように器具本体１に収容され、残る固定金具２は器具本体１には収容されることがない。
【０００８】
【発明が解決しようとする課題】
前記のように従来は、一つ一つの固定金具２の大きさに応じたスペースを要して、固定金具２を器具本体１に収容している。
【０００９】
そのため、図９（Ａ）（Ｂ）の収容例では、固定金具２の立ち上がり部２ｃの高さ寸法に応じて、図９（Ｂ）に示されるように器具本体１の開放面から固定金具２の金具主部２ａが突出されてしまう。その結果として、器具本体１から突出した金具主部２ａを考慮しながら器具本体１を包装しなければならないため、包装箱に大形なものが必要になるとともに、それに伴い包装コストが高いという問題がある。
【００１０】
同様に、図１０（Ａ）（Ｂ）の収容例では、器具本体１内に一つの固定金具２しか収容できないので、収容しきれなかった他の固定金具２についての個別包装が必要とされ、それに応じて包装コストが高いという問題がある。
【００１１】
したがって、本発明が解決しようとする課題は、使用するすべての固定金具が収容された器具本体についての包装箱を小形にできて包装コストを低減できる天井埋め込み形照明器具を得ることにある。
【００１２】
【課題を解決するための手段】
本発明は、下面が開放された細長い箱状に形成され、かつ、天井に開口された器具取付け孔に挿入されて天井裏の吊りボルトに吊持される器具本体と、この器具本体に連結される金具主部及び前記器具取付け孔の孔縁下面に引っ掛けられる一対の天井接触部を有するとともに、これら金具主部と天井接触部の両者に対して折り曲げられて前記両者を一体に連続させた立ち上がり部を有する複数の固定金具と、前記器具取付け孔を覆い隠して前記固定金具の下側に配置される反射板と、を具備した天井埋め込み形照明器具を前提とする。
【００１３】
そして、前記課題を解決するために、請求項１の発明は、前記天井接触部の幅を前記金具主部の幅より狭くするとともに、この接触部が挿通可能な１以上の接触部通孔を前記金具主部に設け、前記一対の天井接触部の一方を組合わされる他の固定金具の前記接触部通孔に挿通させて複数の前記固定金具を組合わせて、これら組合わされた固定金具を前記器具本体に収容可能にしたことを特徴とするものである。
【００１４】
この請求項１の発明では、複数の固定金具を器具本体に収容するにあたって、ある固定金具が有する一対の天井接触部の内の一方を、前記ある固定金具に組合わされる他の固定金具の金具主部に設けた接触部通孔に挿通させて、前記複数の固定金具を長手方向に位置をずらして互いの内面が向かい合うように組合わせることができる。この組合わせ状態によれば、複数の固定金具の立ち上がり部及び天井接触部がなすＬ形状部分が互い違いに入り込むように配置され、組合わされた複数の固定金具の組合わせ幅は実質的には一つの固定金具の高さに略等しいとともに、組合わされた複数の固定金具の組合わせ高さは一つの固定金具の幅に等しい。したがって、本発明に係る照明器具の包装において、この器具に使用するすべての固定金具を、既述のように組合わせて、その一側面が器具本体の開放面と対向する壁部に接するような横倒しの姿勢にして器具本体に収容できる。そして、前記組合わせ高さは器具本体の高さより短いから、組合わされた複数の固定金具の一部が前記収容状態において器具本体の開放面から突出することもない。
【００１５】
【発明の実施の形態】
以下、図１〜図６を参照して本発明の第１の実施の形態を説明する。
【００１６】
図１及び図２中２１は天井であり、２１ａは天井２１の一部に開口された器具取付け孔である。この取付け孔２１ａは以下説明する天井埋め込み形照明器具２２の長さに対応して細長い長方形をなしている。天井裏には器具取付け孔２１ａに臨んで複数本例えば２本の吊りボルト２３が配置されており、これらのボルト２３の下端部にはワッシャ２４が嵌合されるとともにナット２５が螺合され、このナット２５を締上げることにより照明器具２２が天井２１に埋め込んで装着されるようになっている。
【００１７】
図２に示されるように照明器具２２は、金属製の器具本体３１と、複数の金属製固定金具３２と、金属製又は合成樹脂や紙等の非金属製もしくはこれらの複合材料からなる下面開放型の反射板３３と、光源をなす直管型蛍光ランプ３４とを備えている。
【００１８】
器具本体３１は、下面が開放された細長い箱構造をなしており、その内部には図２及び図６に示されるように放電灯安定器等の点灯装置２６や端子台２７等の電気部品が収容されている。更に、器具本体３１の長手方向両端には夫々ソケット取付け金具３５が取付けられている。第１の実施の形態に係る照明器具２２は２灯用であるので、それに合わせて、器具本体３１の両側壁３１ａ下端から幅方向外側に略水平状に突出する一対のソケットホルダー部３５ａを有した２灯用のソケット取付け金具３５が使用されている。これらソケットホルダー部３５ａの夫々には前記ランプ３４が取外し可能に装着されるランプソケット３６が下向きに突出して取付けられている。ランプソケット３６の高さ寸法は器具本体３１の幅寸法よりも短い。
【００１９】
器具本体３１の相対向する側壁３１ａには、その長手方向両端部に位置して縦長なスリットからなる連結孔３８が夫々形成されている。更に、器具本体３１の開放された下面と対向する上壁３１ｂには、その長手方向両端部に位置して吊りボルト導入孔３９が開けられている。又、図６中４０は上壁３１ｂに開けられた電源線引き込み孔である。
【００２０】
図３〜図５等に示されるように亜鉛引き鉄板などからなる一対の固定金具３２は、金具主部４１と、一対の天井接触部４２と、一対の立ち上がり部４３とを有している。
【００２１】
金具主部４１は、その幅方向両側縁を上向きに折り曲げてなる補強フランジ４１ａを有し、かつ、これら一対のフランジ４１ａ間の板部に位置して、ねじ受けとしての螺孔４４が複数設けられているとともに、例えば２個の接触部通孔４５が設けられている。両接触部通孔４５は、矩形の孔等からなり、例えば金具主部４１の前記立ち上がり部４３側に寄った両端部に夫々形成されている。
【００２２】
補強フランジ４１ａの中央部には一対の係合爪４６が夫々形成され、同じ補強フランジ４１ａに形成された一対の係合爪４６は、その爪先が非対向となるように互いに逆方向に向いて設けられている。これらの係合爪４６を介して固定金具３２が器具本体３１の長手方向の端部に連結されている。詳しくは、各係合爪４６の爪先部を前記連結孔３８に器具本体３１の内側から夫々挿通させて、これら連結孔３８に各係合爪４６を夫々引っ掛けることにより、固定金具３２が器具本体３１をその幅方向に横切って器具本体３１に連結されている。なお、こうした連結孔３８と係合爪４６との係合は、前記器具本体３１の側壁３１ａ間を広げるように側壁３１ａを一旦弾性変形させて実施される。
【００２３】
一対の天井接触部４２は、金具主部４１の前記板部と平行に設けられて、器具取付け孔２１ａの幅方向に向かい合った孔縁の下面に引っ掛けられるものである。一対の立ち上がり部４３は、金具主部４１と天井接触部４２との両者を一体に連続して設けられている。これらの立ち上がり部４３間の離間寸法、言い換えれば、金具主部４１の長さは器具取付け孔２１ａの開口幅より少し短くなっている。
【００２４】
図３（Ｃ）に示されるように立ち上がり部４３の幅は、天井接触部４２側程狭くなっているとともに、天井接触部４２の幅Ａも立ち上がり部４３の最小幅と等しくなっている。そして、天井接触部４２は前記接触部通孔４５を挿通可能な大きさに形成されている。したがって、金具主部４１の幅Ｂが固定金具３２の最大幅をなしており、この幅Ｂは、器具本体３１の開放面から上壁３１ｂまでの寸法、つまり、器具本体３１の高さ（深さ）寸法よりも短い。
【００２５】
又、天井裏での器具本体３１の高さ位置を決める立ち上がり部４２の高さ寸法は、器具本体３１の両側壁３１ａ間の寸法、言い換えれば、器具本体３１の幅よりも短くしてある。更に、立ち上がり部４３の天井接触部４２側の段部４３ａから金具主部４１側の部分は、接触部通孔４５を挿通できないように接触部通孔４５よりも幅広に形成されている。それにより、前記段部４３ａは固定金具３２同志を組合わせる際において、接触部通孔４５への天井接触部４２の挿入深さを決めるストッパとして使用され、そのストッパ作用によって組合わされた複数の固定金具３２、３２の最大組合わせ幅が、器具本体３１の幅と同等以下となるようにしてある。なお、図２〜図５中４７は、金具主部４１の長手方向の端部から立ち上がり部４３を経て天井接触部４２に至る補強用ビードである。
【００２６】
前記下面開放型の反射板３３は、その開口縁に器具取付け孔２１ａの孔縁を下側から覆う張り出し開口縁３３ａを有している。この反射板３３の長手方向に延びる両側反射壁は夫々傾斜されている。反射板３３の天井反射壁の長手方向両端には夫々ソケット通孔（図示しない）が開けられていて、これらの通孔にはランプソケット３６が上方から挿通される。更に、反射板３３の天井反射壁にはねじ通孔（図示しない）が設けられており、これらのねじ通孔を上方に挿通する化粧ねじ４８は、前記螺孔４４にねじ込まれて反射板３３を固定金具３２に取付けている。
【００２７】
なお、前記構成の天井埋め込み形照明器具２２は、次の、手順で天井２１に埋め込んで装着される。まず、器具本体３１の長手方向両端部に夫々固定金具３２を連結させた状態で、これら固定金具３２の一対の天井接触部４２が天井２１の器具取付け孔２１ａの孔縁下面に当るまで、器具本体３１を天井取付け孔２１ａに挿入するとともに、その際に、器具本体３１の上壁３１ｂの各吊りボルト導入孔３９に天井裏の吊りボルト２３の下端部を夫々導入する。次に、器具本体３１内において吊りボルト２３の下端部に、ワッシャ２４を嵌合するとともにナット２５を螺合して締め上げることにより、天井接触部４２を器具取付け孔２１ａの孔縁下面に強く密着させるとともに器具本体３１を２本の吊りボルト２３に吊持する。この後、器具取付け孔２１ａに下面開放型の反射板３３を挿入して、この反射板３３を固定金具３２の下側に配置する。次に、反射板３３に化粧ねじ４８を通して、これらのねじ４８を固定金具３２の螺孔４４に螺合することにより、器具取付け孔２１ａ及びその孔縁を覆い隠して反射板３３を取付ける。最後に、前記反射板３３の取付けに伴いソケット通孔を通って反射板３３内に配置されたランプソケット３６に直管型蛍光ランプ３４を取付ける。以上の手順により照明器具２２が天井２１に埋め込んで装着される。
【００２８】
ところで、２個のソケット取付け金具３５及び２個の固定金具３２は、前記構成の照明器具２２の包装において、器具本体３１内のデッドスペースを利用して取出し可能に器具本体３１に収容される。
【００２９】
すなわち、図６に示されるようにランプソケット３６が取付けられたソケット取付け金具３５は、器具本体３１の端板と吊りボルト導入孔３９との間のスペースに夫々収容される。また、２個の固定金具３２は、図５に示されるように互いに組合わされて端子台２７とこれに近い方の吊りボルト導入孔３９との間のスペースに収容される。
【００３０】
２個の固定金具３２を組合わせるには、その内面同志を互いに向かい合わせながら、一方の固定金具３２が有する一対の天井接触部４２の内の一方を、他方の固定金具３２に設けた２個の接触部通孔４５の内の一方に挿通させるとともに、他方の天井接触部４２を他方の固定金具３２の外側に配置する。この時、同様に前記他方の固定金具３２が有する一対の天井接触部４２の内の一方も、前記一方の固定金具３２に設けた２個の接触部通孔４５の内の一方に挿通させるとともに、他方の天井接触部４２を前記一方の固定金具３２の外側に配置する。
【００３１】
このようにして互いに抱き合うように組み合わされた２個の固定金具３２の状態は図５に示されている。この組合わせ状態では、２個の固定金具３２の立ち上がり部４３及び天井接触部４２がなすＬ形状部分は互い違いに入り込むようにして略平行状に配置されるので、組合わされた２個の固定金具３２の組合わせ幅Ｗは実質的には一つの固定金具３２の高さｈに略等しいとともに、組合わされた２個の固定金具３２の組合わせ高さＨは一つの固定金具３２の最大幅Ｂに等しい。又、組合わせ長さＬは２個の固定金具３２の対向し合う長さに応じて２個の固定金具３２を長手方向に並べた寸法よりも短い。しかも、この実施の形態のように接触部通孔４５を金具主部４１長手方向の端部に設けた構成によれば、金具主部４１の大半を占めて２個の固定金具３２が対向し合うので、前記組合わせ長さＬをかなり短くでき、器具本体３１内に大きなスペースを必要とせずに収容できる点で優れている。
【００３２】
そして、開放面が上を向く姿勢で配置された器具本体３１に対して、以上のように組み合わされた２個の固定金具３２は、その一側面を器具本体３１の上壁３１ｂに支持させた横倒しの姿勢で、器具本体３１内の前記スペースに収容される。この収容状態は図５中２点鎖線及び図６に示される。なお、この収容において器具本体３１の幅よりも前記組合わせ幅Ｗが少し大きい場合には、図５中２点鎖線に示すように器具本体３１の両側壁３１ａを可撓変形（この変形は器具本体３１が薄い板金からなりその側壁３１ａが長いので容易である。）させて、組み合わされた２個の固定金具３２を器具本体３１に収容できる。そして、このように収容する場合には、器具本体３１の両側壁３１ａの弾性力により収容された２個の固定金具を所定収容位置に位置決めできる点で優れている。
【００３３】
前記収容状態において、既述のように組合わされた２個の固定金具３２の組合わせ高さＨは一つの固定金具３２の最大幅Ｂに等しく、この幅Ｂは器具本体３１の高さ寸法よりも短いから、結局、収容された２個の固定金具３２の一部が器具本体３１の開放面から突出することはない。そのため、前記突出を考慮した大きさの包装箱を使用する必要がなく、以上のように固定金具３２等を収容した器具本体３１を包装する図示しない包装箱（個装用包装箱の例を図６中２点鎖線で示す）Ｋに高さが低い小形なものを使用できる。又、前記のように第１の実施の形態に係る照明器具２２が備えるすべての固定金具３２を、余すことなく器具本体３１内のデッドスペースに収容できるから、収容しきれない固定金具３２を個別に包装する手間や包装資材等も省略できる。したがって、これらの理由によって、包装コストを低減することができ、その実用上の効果は大である。
【００３４】
図７及び図８は本発明の第２の実施の形態を示している。この第２の実施の形態は基本的には第１の実施の形態と同様な構成であるので、同様構成部分には第１の実施の形態と同じ符号を付して、その構成及び作用の説明を省略し、以下異なる部分について説明する。第２の実施の形態が第１の実施の形態と異なる部分は、固定金具の接触部通孔である。
【００３５】
すなわち、第２の実施の形態において、固定金具３２の金具主部４１には一対の第１接触部通孔４５の他に第２接触部通孔１４５が設けられている。一対の第１接触部通孔４５は金具主部４１の長手方向両端部に夫々形成されており、第２接触部通孔１４５は金具主部４１の長手方向中央部に形成されている。この第２接触部通孔１４５は第１接触部通孔４５を２個合わせた大きさをなしているが、これに代えて２個の近接した孔で形成しても良い。なお、以上の点以外の構成は、図示されない部分を含めて第１の実施の形態と同じである。
【００３６】
この第２の実施の形態に係る天井埋め込み形照明器具では、その包装にあたり第１接触部通孔４５を利用して第１の実施の形態のように２個の固定金具３２のみならず、３個以上の固定金具を互いに抱き合うような形態に組合わせて器具本体３１内に収容できる。
【００３７】
次に３個の固定金具３２を組合わせる場合について説明する。まず、１の固定金具３２を基準としてこれに他の２個の固定金具の内の１の固定金具３２を組合わせる。その場合、これら２個の固定金具３２の内面同志を互いに向かい合わせながら、一方の固定金具３２が有する一対の天井接触部４２の内の一方を、他方の固定金具３２の第２接触部通孔１４５に挿通させるとともに、他方の天井接触部４２を他方の固定金具３２の外側に配置する。この時、同様に前記他方の固定金具３２が有する一対の天井接触部４２の内の一方も、前記一方の固定金具３２に設けた第２接触部通孔１４５に挿通させるとともに、他方の天井接触部４２を前記一方の固定金具３２の外側に配置する。こうして組み合わされた状態は図７に示されている。次に、残る１の固定金具３２を前記基準とした１の固定金具３２に、既述の組合わせ手順と同様の手順で組合わせる。
【００３８】
そして、照明器具２２の包装において、前記のようにして組み合わされた３個の固定金具３２を横倒しに寝かせた姿勢で、器具本体３１内のデッドスペースに収容できる。この収容状態は図７中２点鎖線及び図６に示されている。なお、固定金具３２を３個以上使用する天井埋め込み形照明器具２２は、より長い直管形蛍光ランプを使用するものであり、それに応じて器具本体３１の長さも当然に長いとともに、この器具本体３１内のデッドスペースの長さも長くなっているから、固定金具３２の使用数に応じて組合わせ長さＬが長くなるにも拘らず、それを器具本体３１に収容することができる。したがって、この第２の実施の形態においても、包装にあたって複数の固定金具３２のすべてを組合わせて器具本体３１に収容できるので、本発明の課題を解決できる。
【００３９】
なお、本発明は器具本体に反射板取付け金具を取付けて、そのねじ受けに螺合されるねじを介して固定金具の下側に配置される反射板を取付けるようにした天井用埋め込み形照明器具にも適用できる。又、複数の器具本体をその長手方向に並べるとともに、隣接した器具本体相互を連結して天井に設置される連結形の天井埋め込み形照明器具にも適用できる。
【００４０】
更に、本発明において固定金具の金具主部に設ける接触部通孔は一つのみでも良く、この場合には少なくとも１つの天井接触部が挿通できる大きさの接触部通孔を金具主部の長手方向中央部、又は金具主部の長手方向の端部、或いはこれらの中間位置に設けて実施することができる。
【００４１】
【発明の効果】
以上説明したような形態で実施される請求項１に記載の発明によれば、この発明に係る照明器具の包装において、この照明器具が備えるすべての固定金具を、その長手方向に位置をずらして互いの内面が向かい合うように組合わせて、この組み合わされた複数の固定金具を横倒しの姿勢にして器具本体に収容できる。このように使用するすべての固定金具を器具本体に収容できるので一部の固定金具を個別的に包装する必要がなくなるとともに、器具本体に収容された固定金具の一部が器具本体の開放面から突出することがなくなり、したがって、固定金具を収容した器具本体を包装する包装箱を小形にできるとともに、包装コストも低減できる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態に係る天井埋め込み形照明器具の構成を示す斜視図。
【図２】図１に示された照明器具の構成を示す断面図。
【図３】（Ａ）は第１の実施の形態に係る照明器具が備える固定金具を示す平面図。
（Ｂ）は図３（Ａ）の固定金具を一部断面して示す正面図。
（Ｃ）は図３（Ａ）に示された固定金具の側面図。
【図４】（Ａ）は第１の実施の形態に係る照明器具が備える２個の固定金具の組合わせ状態を示す平面図。
（Ｂ）は図４（Ａ）の組合わせ状態を一部断面して示す固定金具の正面図。
（Ｃ）は図４（Ａ）に示された組合わせ状態の固定金具の側面図。
【図５】第１の実施の形態に係る照明器具が備える２個の固定金具の組合わせ状態を器具本体とともに示す斜視図。
【図６】（Ａ）は第１の実施の形態に係る照明器具において器具本体にソケット取付け金具及び固定金具を収容した状態を示す平面図。
（Ｂ）は図６（Ａ）の収容状態を示す断面図。
【図７】本発明の第２の実施の形態に係る照明器具が備える３個の固定金具の組合わせ状態を器具本体とともに示す斜視図。
【図８】第２の実施の形態に係る天井埋め込み形照明器具において器具本体にソケット取付け金具及び固定金具を収容した状態を示す平面図。
【図９】（Ａ）は従来例に係る照明器具において器具本体にソケット取付け金具及び固定金具を収容した状態を示す平面図。
（Ｂ）は図９（Ａ）の収容状態を示す断面図。
【図１０】（Ａ）は従来例に係る照明器具において器具本体にソケット取付け金具及び固定金具を収容した状態を示す平面図。
（Ｂ）は図１０（Ａ）の収容状態を示す断面図。
【符号の説明】
２１…天井、
２１ａ…器具取付け孔、
２２…照明器具、
２３…吊りボルト、
３１…器具本体、
３２…固定金具、
３３…反射板、
３４…蛍光ランプ、
４１…金具主部、
４２…天井接触部、
４３…立ち上がり部、
４５…接触部通孔、
１４５…接触部通孔、
Ｋ…包装箱。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling-embedded luminaire that uses a straight tube fluorescent lamp as a light source, and more particularly, an improved ceiling-embedded fixture that is connected to the fixture body and used to place the main body behind the ceiling. The present invention relates to a shape lighting apparatus.
[0002]
[Prior art]
The ceiling-embedded lighting fixture is arranged in an elongated box-shaped fixture main body having an open bottom surface, fixing brackets connected to several locations of the main body, for example, both ends in the longitudinal direction, and the lower side of the fixing brackets. And a reflector. The lighting device such as a discharge lamp stabilizer and electrical parts such as a terminal block are preliminarily built in the fixture main body that is suspended by the hanging bolts on the back of the ceiling. Other electrical components such as batteries, switches, and emergency lighting units are also built in. In addition, socket fittings to which lamp sockets are connected are respectively attached to both ends in the longitudinal direction of the appliance body.
[0003]
The fixing bracket is bent with respect to both the bracket main part connected to the instrument body, a pair of ceiling contact parts hooked on the lower surface of the hole edge of the fixture mounting hole of the ceiling, and both the bracket main part and the ceiling contact part. It has a pair of rising parts in which the two are continuously integrated, and each part is formed with the same width. The height position at the back of the ceiling of the appliance main body connected to the metal main part is determined by the rising part. The reflecting plate is attached by a decorative screw screwed into the main part of the metal fitting, and a straight tube fluorescent lamp is detachably connected to the lamp socket protruding into the reflecting plate.
[0004]
The fixture body of this type of ceiling-mounted lighting fixture and parts other than the various electrical components, that is, a plurality of fixing brackets, reflectors, socket mounting brackets, etc., are assembled around the fixture body at the fixture installation site. The apparatus is attached to the ceiling with this assembly. On the other hand, the space in the main body other than the portion where the electrical components in the instrument main body having an elongated box shape are arranged is a dead space.
[0005]
Therefore, when packaging a lighting fixture, the dead space is used to accommodate the socket mounting bracket and the fixing bracket in the fixture main body, and an example of such accommodation is shown in FIG. B) or FIGS. 10A and 10B. In these drawings, reference numeral 1 denotes an instrument body, 1a denotes a suspension bolt introduction hole, 1b denotes a power line lead-in hole, 2 denotes a fixture, 2a denotes a main part of the bracket, 2b denotes a ceiling contact part, 2c denotes a rising part, and 2d denotes an instrument. Engaging claws for connection to the main body 1, 3 is a socket mounting bracket, 4 is a lamp socket, 5 is a lighting device, and 6 is a terminal block.
[0006]
9A and 9B, the socket mounting bracket 3 to which the lamp socket 4 is mounted is accommodated in a dead space between the end plate 1c of the fixture body 1 and the suspension bolt introduction hole 1a. The fixing brackets 2 are arranged in the width direction of the instrument body 1 and are accommodated in a dead space between the terminal block 6 and the suspension bolt introduction hole 1a closer thereto. In this example, in order to arrange two fixing brackets 2 in the width direction as described above, a pair of ceiling contact portions 2c of these brackets 2 are supported by a wall 1d facing the open surface of the instrument body 1. In other words, it is stood and accommodated so that the rising portion 2c becomes a leg.
[0007]
In the examples of FIGS. 10A and 10B, the socket mounting bracket 3 is accommodated in the same manner as in the examples of FIGS. 9A and 9B, but the fixing bracket 2 is supported in such a manner that one side surface thereof is supported by the wall 1d. In other words, they are housed in a laid-down position. In this case, since the width of the fixture 2 occupies most of the height (depth) dimension of the instrument body 1, only one fixture 2 is accommodated in the instrument body 1 as described above, and the remaining fixture 2 is The instrument main body 1 is not accommodated.
[0008]
[Problems to be solved by the invention]
As described above, conventionally, a space corresponding to the size of each fixing bracket 2 is required, and the fixing bracket 2 is accommodated in the instrument body 1.
[0009]
Therefore, in the housing example of FIGS. 9 (A) and 9 (B), depending on the height dimension of the rising portion 2c of the fixing bracket 2, as shown in FIG. The metal main part 2a is protruded. As a result, the tool body 1 must be packaged in consideration of the metal fitting main part 2a protruding from the tool body 1, so that a large packaging box is required and the packaging cost is high accordingly. There is.
[0010]
Similarly, in the housing example of FIGS. 10A and 10B, since only one fixing bracket 2 can be accommodated in the instrument body 1, individual packaging for other fixing brackets 2 that could not be accommodated is required. Accordingly, there is a problem that the packaging cost is high.
[0011]
Therefore, the problem to be solved by the present invention is to obtain a ceiling-embedded lighting device that can reduce the packaging cost of the device main body in which all the fixtures to be used are accommodated and reduce the packaging cost.
[0012]
[Means for Solving the Problems]
The present invention comprises an instrument body that is formed in an elongated box shape with an open bottom surface, is inserted into an instrument mounting hole that is opened in the ceiling, and is suspended by a suspension bolt on the back of the ceiling, and is coupled to the instrument body. And a pair of ceiling contact portions that are hooked on the lower surface of the hole edge of the fixture mounting hole, and are bent with respect to both of the metal fixture main portion and the ceiling contact portion so that the two are continuously integrated. It is premised on a ceiling-embedded lighting fixture that includes a plurality of fixing brackets having a portion and a reflector plate that covers and hides the fixture mounting hole and is disposed below the fixing fixture.
[0013]
And in order to solve the said subject, while invention of Claim 1 narrows the width | variety of the said ceiling contact part from the width | variety of the said metal fitting main part, 1 or more contact part through-holes which this contact part can penetrate are provided. A plurality of fixing brackets are combined by inserting one of the pair of ceiling contact portions into the contact portion through-hole of another fixing bracket and combining the plurality of fixing brackets. The instrument main body can be accommodated.
[0014]
According to the first aspect of the present invention, when a plurality of fixing brackets are accommodated in the instrument body, one of the pair of ceiling contact portions of a certain fixing bracket is connected to another fixing bracket combined with the certain fixing bracket. The plurality of fixing brackets can be combined so that the inner surfaces thereof face each other by shifting the positions in the longitudinal direction by being inserted into the contact portion through holes provided in the main portion. According to this combination state, the L-shaped portions formed by the rising portions and the ceiling contact portions of the plurality of fixing brackets are alternately arranged so that the combined width of the plurality of fixing brackets combined is substantially one. The height of one fixing bracket is substantially equal to the height of one fixing bracket, and the combined height of the plurality of fixing brackets combined is equal to the width of one fixing bracket. Therefore, in the packaging of the lighting fixture according to the present invention, all the fixtures used in this fixture are combined as described above, and one side thereof is in contact with the wall portion facing the open surface of the fixture body. Can be housed in the instrument body in a lying position. And since the said combined height is shorter than the height of an instrument main body, a part of some fixed metal fitting combined does not protrude from the open surface of an instrument main body in the said accommodation state.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
[0016]
In FIG. 1 and FIG. 2, reference numeral 21 denotes a ceiling, and reference numeral 21 a denotes an instrument mounting hole opened in a part of the ceiling 21. The mounting hole 21a has an elongated rectangular shape corresponding to the length of the ceiling-embedded lighting fixture 22 described below. A plurality of, for example, two suspension bolts 23 are arranged on the back of the ceiling facing the instrument mounting hole 21a, and a washer 24 is fitted to the lower end portion of these bolts 23 and a nut 25 is screwed. By tightening the nut 25, the lighting fixture 22 is embedded and attached to the ceiling 21.
[0017]
As shown in FIG. 2, the lighting fixture 22 has a metal fixture body 31, a plurality of metal fixtures 32, and an open lower surface made of a metal, a non-metal such as a synthetic resin or paper, or a composite material thereof. And a straight tube type fluorescent lamp 34 as a light source.
[0018]
The appliance main body 31 has a long and narrow box structure with an open bottom surface. As shown in FIGS. 2 and 6, the appliance body 31 includes electrical components such as a lighting device 26 such as a discharge lamp ballast and a terminal block 27. Contained. Further, socket fittings 35 are respectively attached to both ends of the instrument body 31 in the longitudinal direction. Since the lighting fixture 22 according to the first embodiment is for two lamps, it has a pair of socket holder portions 35a protruding substantially horizontally from the lower ends of the side walls 31a of the fixture body 31 outward in the width direction. The two-lamp socket mounting bracket 35 is used. A lamp socket 36 to which the lamp 34 is detachably mounted is attached to each of the socket holder portions 35a so as to protrude downward. The height dimension of the lamp socket 36 is shorter than the width dimension of the instrument body 31.
[0019]
The opposing side walls 31a of the instrument body 31 are respectively formed with connecting holes 38 formed of vertically long slits located at both ends in the longitudinal direction. Further, the upper wall 31b facing the opened lower surface of the instrument body 31 is provided with suspension bolt introduction holes 39 located at both ends in the longitudinal direction. Further, reference numeral 40 in FIG. 6 denotes a power line drawing hole formed in the upper wall 31b.
[0020]
As shown in FIGS. 3 to 5 and the like, the pair of fixing metal fittings 32 made of a galvanized iron plate or the like has a metal fitting main part 41, a pair of ceiling contact parts 42, and a pair of rising parts 43.
[0021]
The metal fitting main part 41 has a reinforcing flange 41a formed by bending both side edges in the width direction upward, and a plurality of screw holes 44 serving as screw receivers are provided at a plate part between the pair of flanges 41a. In addition, for example, two contact portion through holes 45 are provided. Both contact portion through-holes 45 are formed of rectangular holes or the like, and are formed, for example, at both end portions of the metal fitting main portion 41 that are close to the rising portion 43 side.
[0022]
A pair of engaging claws 46 are formed in the central portion of the reinforcing flange 41a, and the pair of engaging claws 46 formed on the same reinforcing flange 41a face in opposite directions so that their toes are not opposed to each other. Is provided. The fixture 32 is connected to the longitudinal end of the instrument body 31 through these engaging claws 46. Specifically, by inserting the toe portions of the respective engaging claws 46 into the connecting holes 38 from the inside of the instrument main body 31 and hooking the engaging claws 46 in the connecting holes 38, the fixing bracket 32 is fixed to the instrument main body 32. 31 is connected to the instrument body 31 across the width direction. The engagement between the connecting hole 38 and the engaging claw 46 is performed by once elastically deforming the side wall 31a so as to widen the space between the side walls 31a of the instrument body 31.
[0023]
The pair of ceiling contact portions 42 is provided in parallel with the plate portion of the metal fitting main portion 41 and is hooked on the lower surface of the hole edge facing the width direction of the appliance mounting hole 21a. The pair of rising portions 43 are provided integrally and continuously with the metal fitting main portion 41 and the ceiling contact portion 42. The distance between these rising parts 43, in other words, the length of the metal fitting main part 41 is slightly shorter than the opening width of the instrument mounting hole 21a.
[0024]
As shown in FIG. 3C, the width of the rising portion 43 is narrower toward the ceiling contact portion 42 side, and the width A of the ceiling contact portion 42 is also equal to the minimum width of the rising portion 43. And the ceiling contact part 42 is formed in the magnitude | size which can insert the said contact part through-hole 45. As shown in FIG. Accordingly, the width B of the metal fitting main part 41 is the maximum width of the fixed metal fitting 32, and this width B is the dimension from the open surface of the appliance body 31 to the upper wall 31b, that is, the height (depth) of the appliance body 31. A) Shorter than the dimension.
[0025]
The height dimension of the rising portion 42 that determines the height position of the instrument body 31 behind the ceiling is shorter than the dimension between the side walls 31 a of the instrument body 31, in other words, the width of the instrument body 31. Further, a portion of the rising portion 43 on the side of the metal fitting main portion 41 from the stepped portion 43 a on the ceiling contact portion 42 side is formed wider than the contact portion through hole 45 so that the contact portion through hole 45 cannot be inserted. Thereby, the step portion 43a is used as a stopper for determining the insertion depth of the ceiling contact portion 42 into the contact portion through hole 45 when the fixing brackets 32 are combined, and a plurality of fixing portions combined by the stopper action are used. The maximum combined width of the metal fittings 32 is set to be equal to or less than the width of the instrument main body 31. 2 to 5, reference numeral 47 denotes a reinforcing bead that extends from the longitudinal end of the metal fitting main part 41 to the ceiling contact part 42 through the rising part 43.
[0026]
The lower open-type reflecting plate 33 has an overhanging opening edge 33a covering the hole edge of the instrument mounting hole 21a from the lower side at the opening edge. Both side reflection walls extending in the longitudinal direction of the reflection plate 33 are inclined. Socket through holes (not shown) are formed at both ends in the longitudinal direction of the ceiling reflecting wall of the reflecting plate 33, and the lamp sockets 36 are inserted into these through holes from above. Further, screw reflection holes (not shown) are provided in the ceiling reflection wall of the reflection plate 33, and the decorative screw 48 that passes through these screw passage holes upward is screwed into the screw holes 44 and reflected on the reflection plate 33. Is attached to the fixture 32.
[0027]
The ceiling-embedded lighting fixture 22 having the above-described configuration is mounted by being embedded in the ceiling 21 in the following procedure. First, in a state where the fixtures 32 are connected to both longitudinal ends of the fixture body 31, the fixtures are mounted until the pair of ceiling contact portions 42 of the fixtures 32 contact the lower surface of the edge of the fixture attachment hole 21 a of the ceiling 21. The main body 31 is inserted into the ceiling mounting hole 21a, and at that time, the lower end portions of the suspension bolts 23 on the back of the ceiling are respectively introduced into the suspension bolt introduction holes 39 of the upper wall 31b of the instrument body 31. Next, by fitting the washer 24 to the lower end portion of the suspension bolt 23 in the instrument body 31 and screwing the nut 25 up and tightening, the ceiling contact portion 42 is strongly attached to the lower surface of the edge of the instrument attachment hole 21a. The instrument body 31 is suspended by two suspension bolts 23 while being in close contact. Thereafter, an open bottom reflective plate 33 is inserted into the instrument mounting hole 21 a, and the reflective plate 33 is disposed below the fixing bracket 32. Next, the decorative plate 48 is passed through the reflecting plate 33 and these screws 48 are screwed into the screw holes 44 of the fixing bracket 32, thereby covering the instrument mounting hole 21 a and the edge of the hole and attaching the reflecting plate 33. Finally, the straight tube type fluorescent lamp 34 is attached to the lamp socket 36 disposed in the reflecting plate 33 through the socket through hole with the mounting of the reflecting plate 33. The lighting fixture 22 is embedded and attached to the ceiling 21 by the above procedure.
[0028]
By the way, the two socket mounting brackets 35 and the two fixing brackets 32 are accommodated in the fixture main body 31 so as to be able to be taken out using the dead space in the fixture main body 31 in the packaging of the lighting fixture 22 having the above-described configuration.
[0029]
That is, as shown in FIG. 6, the socket mounting bracket 35 to which the lamp socket 36 is mounted is accommodated in the space between the end plate of the instrument body 31 and the suspension bolt introduction hole 39. Further, the two fixing brackets 32 are combined with each other as shown in FIG. 5 and are accommodated in a space between the terminal block 27 and the suspension bolt introduction hole 39 closer thereto.
[0030]
In order to combine the two fixing brackets 32, one of the pair of ceiling contact portions 42 of one fixing bracket 32 is provided on the other fixing bracket 32 while the inner surfaces thereof face each other. The other ceiling contact portion 42 is disposed outside the other fixing bracket 32 while being inserted into one of the contact portion through holes 45. At this time, similarly, one of the pair of ceiling contact portions 42 of the other fixing bracket 32 is inserted into one of the two contact portion through holes 45 provided in the one fixing bracket 32. The other ceiling contact portion 42 is disposed outside the one fixing bracket 32.
[0031]
The state of the two fixing brackets 32 combined so as to hold each other in this manner is shown in FIG. In this combined state, the L-shaped portions formed by the rising portions 43 and the ceiling contact portions 42 of the two fixing brackets 32 are arranged in substantially parallel so as to alternately enter, so that the two fixing brackets combined together The combined width W of 32 is substantially equal to the height h of one fixing bracket 32, and the combined height H of the two fixing brackets 32 combined is the maximum width B of one fixing bracket 32. be equivalent to. The combined length L is shorter than the dimension in which the two fixing brackets 32 are arranged in the longitudinal direction according to the length of the two fixing brackets 32 facing each other. Moreover, according to the configuration in which the contact portion through hole 45 is provided at the longitudinal end of the metal fitting main portion 41 as in this embodiment, the two metal fittings 32 are opposed to each other by occupying most of the metal fitting main portion 41. Therefore, the combination length L can be considerably shortened, and it is excellent in that it can be accommodated in the instrument body 31 without requiring a large space.
[0032]
And two fixtures 32 combined as described above with respect to the instrument body 31 arranged with the posture where the open surface faces upward, has one side surface supported by the upper wall 31b of the instrument body 31. It is housed in the space in the instrument body 31 in a lying position. This accommodation state is shown by a two-dot chain line in FIG. 5 and FIG. In this housing, when the combination width W is slightly larger than the width of the instrument main body 31, both side walls 31a of the instrument main body 31 are flexibly deformed as shown by a two-dot chain line in FIG. The main body 31 is made of a thin sheet metal and the side wall 31a is long, which is easy.), And the two fixing brackets 32 combined can be accommodated in the instrument main body 31. And in accommodating in this way, it is excellent at the point which can position two fixing brackets accommodated with the elastic force of the both-sides wall 31a of the instrument main body 31 in a predetermined accommodation position.
[0033]
In the housing state, the combined height H of the two fixing brackets 32 combined as described above is equal to the maximum width B of one fixing bracket 32, and this width B is based on the height dimension of the instrument body 31. Therefore, after all, a part of the two fixed metal fittings 32 that are accommodated does not protrude from the open surface of the instrument body 31. Therefore, it is not necessary to use a packaging box having a size in consideration of the protrusion, and a packaging box (not shown) for packaging the instrument main body 31 containing the fixing bracket 32 and the like as described above (an example of an individual packaging box is shown in FIG. 6). A small one with a low height can be used for K (indicated by the middle two-dot chain line). Further, as described above, since all the fixtures 32 included in the lighting fixture 22 according to the first embodiment can be accommodated in the dead space in the fixture main body 31, the fixtures 32 that cannot be accommodated individually are individually stored. The trouble of packaging and packaging materials can also be omitted. Therefore, for these reasons, the packaging cost can be reduced, and its practical effect is great.
[0034]
7 and 8 show a second embodiment of the present invention. Since the second embodiment basically has the same configuration as that of the first embodiment, the same reference numerals as those in the first embodiment are assigned to the same components, and the configuration and operation thereof are the same. The description is omitted, and different parts will be described below. The second embodiment is different from the first embodiment in the contact hole of the fixture.
[0035]
That is, in the second embodiment, the metal main part 41 of the fixing metal 32 is provided with a second contact part through hole 145 in addition to the pair of first contact part through holes 45. The pair of first contact portion through holes 45 are formed at both longitudinal ends of the metal fitting main portion 41, and the second contact portion through holes 145 are formed at the longitudinal center portion of the metal fitting main portion 41. The second contact portion through-hole 145 has a size obtained by combining two first contact portion through-holes 45, but may be formed by two adjacent holes instead. The configuration other than the above points is the same as that of the first embodiment, including a portion not shown.
[0036]
In the ceiling-embedded lighting fixture according to the second embodiment, not only the two fixing brackets 32 as in the first embodiment but also 3 Two or more fixing brackets can be combined with each other in a form that can be held in the instrument body 31.
[0037]
Next, a case where three fixing brackets 32 are combined will be described. First, one fixing bracket 32 of the other two fixing brackets is combined with one fixing bracket 32 as a reference. In that case, while the inner surfaces of the two fixing brackets 32 face each other, one of the pair of ceiling contact portions 42 of one fixing bracket 32 is connected to the second contact portion through-hole of the other fixing bracket 32. The other ceiling contact portion 42 is disposed outside the other fixing bracket 32 while being inserted through the 145. At this time, similarly, one of the pair of ceiling contact portions 42 of the other fixing bracket 32 is inserted into the second contact portion through-hole 145 provided in the one fixing bracket 32 and the other ceiling contact is also made. The portion 42 is disposed outside the one fixing bracket 32. The combined state is shown in FIG. Next, the remaining one fixing bracket 32 is combined with the one fixing bracket 32 based on the above-mentioned procedure in the same procedure as the combination procedure described above.
[0038]
And in packaging of the lighting fixture 22, it can accommodate in the dead space in the fixture main body 31 with the attitude | position which laid down the three fixing metal fittings 32 combined as mentioned above sideways. This accommodated state is shown by a two-dot chain line in FIG. 7 and FIG. Note that the ceiling-embedded lighting fixture 22 using three or more fixing brackets 32 uses a longer straight tube fluorescent lamp, and the length of the fixture body 31 is naturally long accordingly. Since the length of the dead space in 31 is also long, it can be accommodated in the instrument main body 31 in spite of the combination length L becoming longer according to the number of use of the fixing bracket 32. Therefore, also in the second embodiment, all of the plurality of fixing brackets 32 can be combined and accommodated in the instrument body 31 for packaging, so that the problem of the present invention can be solved.
[0039]
The present invention relates to a ceiling-mounted lighting fixture in which a reflector mounting bracket is attached to the fixture body, and a reflector arranged below the fixing bracket is attached via a screw that is screwed into the screw receiver. It can also be applied to. Further, the present invention can also be applied to a connection-type ceiling-embedded lighting fixture in which a plurality of fixture bodies are arranged in the longitudinal direction and the adjacent fixture bodies are connected to each other and installed on the ceiling.
[0040]
Furthermore, in the present invention, only one contact portion through-hole provided in the metal fitting main portion of the fixing metal fitting may be provided. In this case, at least one contact portion through-hole that can be inserted into the ceiling contact portion is provided as a longitudinal portion of the metal fitting main portion. It can be carried out by being provided at the center in the direction, the end in the longitudinal direction of the main part of the metal fitting, or an intermediate position thereof.
[0041]
【The invention's effect】
According to the invention described in claim 1 implemented in the form as described above, in the packaging of the lighting apparatus according to the present invention, all the fixtures provided in the lighting apparatus are shifted in the longitudinal direction. By combining the inner surfaces of the fixtures so that the inner surfaces thereof face each other, the assembled fixtures can be placed in a lying position and accommodated in the instrument body. Since all the fixtures used in this way can be accommodated in the instrument body, there is no need to individually wrap some of the fixtures, and part of the fixtures accommodated in the instrument body can be removed from the open surface of the instrument body. Therefore, it is possible to reduce the size of the packaging box for packaging the instrument main body containing the fixing bracket, and to reduce the packaging cost.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a ceiling-embedded lighting fixture according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view illustrating a configuration of the lighting fixture illustrated in FIG.
FIG. 3A is a plan view showing a fixture provided in the lighting apparatus according to the first embodiment.
FIG. 4B is a front view showing a part of the fixing bracket of FIG.
FIG. 3C is a side view of the fixing metal fitting shown in FIG.
4A is a plan view showing a combined state of two fixing brackets provided in the lighting fixture according to the first embodiment. FIG.
FIG. 5B is a front view of the fixing bracket showing a partial cross-sectional view of the combined state of FIG.
(C) is a side view of the fixture in the combined state shown in FIG.
FIG. 5 is a perspective view showing a combined state of two fixing brackets provided in the lighting fixture according to the first embodiment together with the fixture main body.
6A is a plan view showing a state in which a socket mounting bracket and a fixing bracket are housed in the fixture body in the lighting fixture according to the first embodiment. FIG.
(B) is sectional drawing which shows the accommodation state of FIG. 6 (A).
FIG. 7 is a perspective view showing a combined state of three fixing brackets provided in a lighting fixture according to a second embodiment of the present invention together with the fixture main body.
FIG. 8 is a plan view showing a state in which a socket mounting bracket and a fixing bracket are accommodated in the fixture body in the ceiling-embedded lighting fixture according to the second embodiment.
FIG. 9A is a plan view showing a state in which a socket mounting bracket and a fixing bracket are housed in a fixture body in a lighting fixture according to a conventional example.
(B) is sectional drawing which shows the accommodation state of FIG. 9 (A).
FIG. 10 (A) is a plan view showing a state in which a socket mounting bracket and a fixing bracket are housed in a fixture body in a lighting fixture according to a conventional example.
(B) is sectional drawing which shows the accommodation state of FIG. 10 (A).
[Explanation of symbols]
21 ... ceiling,
21a ... instrument mounting hole,
22 ... Lighting equipment,
23 ... Hanging bolt,
31 ... The instrument body,
32. Fixing bracket,
33 ... reflector,
34 ... Fluorescent lamp,
41 ... metal fitting main part,
42 ... ceiling contact part,
43. Rising part,
45. Contact part through-hole,
145 ... contact portion through hole,
K ... Packaging box.

Claims

An instrument body that is formed in an elongated box shape with an open bottom surface, is inserted into an instrument mounting hole that is opened in the ceiling, and is suspended by suspension bolts on the ceiling, and a metal fitting main part that is connected to the instrument body And a plurality of ceiling contact portions that are hooked on the lower surface of the hole edge of the device mounting hole, and a plurality of rising portions that are bent with respect to both the metal fitting main portion and the ceiling contact portion so that the two are continuously integrated. In the ceiling-embedded lighting fixture comprising: the fixing bracket; and a reflector plate that covers the fixture mounting hole and is disposed below the fixing bracket.
A width of the ceiling contact portion is made narrower than a width of the metal fitting main portion, and at least one contact portion through-hole through which the contact portion can be inserted is provided in the metal fitting main portion, and one of the pair of ceiling contact portions is assembled. A ceiling-embedded illumination characterized in that a plurality of the fixing brackets are combined by being inserted through the contact portion through-holes of other fixing brackets to be combined, and the combined fixing brackets can be accommodated in the instrument body. Instruments.