JP3856966B2

JP3856966B2 - lighting equipment

Info

Publication number: JP3856966B2
Application number: JP30084798A
Authority: JP
Inventors: 一喜山本; 学前田
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1998-10-22
Filing date: 1998-10-22
Publication date: 2006-12-13
Anticipated expiration: 2018-10-22
Also published as: JP2000133032A

Description

【０００１】
【発明の属する技術分野】
この発明は、トリムレス（枠なし）カバーを有する照明器具に関するものである。
【０００２】
【従来の技術】
従来よりあるトリムレスカバー付照明器具とは、図２０（ａ），（ｂ）に示すような照明器具のことであり、枠なしの樹脂カバー付器具をいう。図２０（ａ）は会議室等に使用される照明器具、図２０（ｂ）は住宅用の照明器具である。５０は本体、５１は樹脂カバー（グローブ）である。この樹脂カバーの取付構造として、図２０（ｂ）に示した丸形の住宅用においては、樹脂カバーを回転させて取付けたり、プッシュプル方式等多くの公知技術が存在する。また、図２０（ａ）に示した４０Ｗサイズの直管蛍光灯を用いた角形の器具においては、図２１に示すような落とし込み取付け、図２２に示すようなキックばね方式、図２３に示すような樹脂抱え方式等が開示されている。図２１では、樹脂カバー５１を本体５０の外周縁部に落とし込み支持させる。図２２（ａ），（ｂ）において、５２はばね取付金具、５３はキックばね、５４はばね受けである。この場合、圧縮したキックばね５３をばね受け５４内で復帰させることにより係止状態となる。図２３において、５５はばね、５６は支持部材である。この場合、樹脂カバー５１を支持部材５６で支持できるようにばね５５が付勢されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記従来の方式であると、樹脂カバー着脱時及び保持時に樹脂カバーを持ち、引き下げたり押し上げたりするため、図２４に示すように、樹脂カバー５１の張出し部（Ｐ点）に応力が生じる。一方、従来の角形でトリムレスの樹脂カバーにおいては、図２５に示すように、張出しＤが２０〜２５ｍｍ程度であり、高さＨも７０ｍｍ程度であるため、樹脂成形後の肉厚ｔ₁が確保されやすく前述した応力に対し強度上問題がなかった。しかし、図２６（ａ），（ｂ）に示すように、従来にない薄型（高さＨが４０ｍｍ程度）で、張出しＤが大きい（３５〜４０ｍｍ程度）さらに大型の（Ｈｆ３２Ｗ４灯用）樹脂カバー付の照明器具を開発するにあたり、従来の取付方式であると、樹脂成形後の肉厚ｔ₂が確保され難く（０．５〜１ｍｍ程度）、張出しが大きいため張出し部（Ｐ点）に生じる応力が大きくなり、強度上の問題（クラック、割れ等）が生じる。
【０００４】
したがって、この発明の目的は、前述の問題を解決するため、グローブ着脱時または保持時において、グローブに生じる応力を小さくすることができる照明器具を提供することである。
【０００５】
【課題を解決するための手段】
上記課題を解決するためにこの発明の請求項１記載の照明器具は、取付面に固定されランプを装備し周縁に周縁壁部を有する角形の器具本体と、前記周縁壁部の内に挿入される角形の開口部とこの開口部の外側方に突出形成される外鍔状部とこの外鍔状部に連続形成されるランプを覆う透光面部とを有するグローブとを備えた直付型照明器具であって、前記グローブの開口部の少なくとも一辺に沿って取付けられて被係止部を有する係止具と、この係止具に対応する前記器具本体の周縁壁部に前記グローブの開口部の周縁に沿う方向に移動可能に取付けられて係止部を有する係合具とを備え、前記係合具が移動して前記係止部と前記被係止部が係止することにより前記グローブが支持され、かつ係止状態が解除するように前記係合具を移動させる操作部を、前記器具本体の外側から操作できるように設け、係止状態が解除する状態で、前記係止具が係止状態の位置よりも下方の位置で前記係合具に再度係止するように、前記係合具の前記係止部の突出方向と反対側の下部に前記被係止部が係止する突部を設けたことを特徴とする。
【０００６】
このように、グローブの開口部の少なくとも一辺に沿って取付けられて被係止部を有する係止具と、この係止具に対応する器具本体の周縁壁部にグローブの開口部の周縁に沿う方向に移動可能に取付けられて係止部を有する係合具とを備え、係合具が移動して係止部と被係止部が係止することによりグローブが支持され、かつ係止状態が解除するように係合具を移動させる操作部を、器具本体の外側から操作できるように設けたので、グローブ側の係止具と器具本体側の係合具を係止させることで係止状態となり、また操作部を操作することにより係止状態を解除できる。このため、グローブの取付けまたは取外し時にグローブを引き下げたり押し上げたりする必要がなく、グローブに大きなストレスをかけなくてすみ、グローブを着脱または保持する際に生じていた応力を低減できる。また、係止状態が解除する状態で、係止具が係止状態の位置よりも下方の位置で係合具に再度係止するように、係合具の係止部の突出方向と反対側の下部に被係止部が係止する突部を設けたので、部品点数を増やさずに二重安全構造が可能となる。
【０００７】
【発明の実施の形態】
この発明の第１の実施の形態の照明器具を図１〜図４に基づいて説明する。
【０００８】
図１はこの発明の第１の実施の形態の照明器具の要部分解斜視図、図２はこの発明の実施の形態の照明器具の斜視図、図３は図２のＡ−Ａ断面図、図４はこの発明の第１の実施の形態におけるグローブの取付状態を示す説明図である。
【０００９】
図１〜図３において、１は照明器具本体、２はプラスチック製のグローブ（トリムレス樹脂カバー）、３は係合具（樹脂カバー保持金具）、４は係止具（受金具）である。器具本体１は、天井等の取付面に固定されランプ１２を装備し周縁に周縁壁部１ａを有する角形の部材である。グローブ２は、周縁壁部１ａの内に挿入される角形の開口部２ｂと、この開口部２ｂの外側方に突出形成される外鍔状部２ａと、この外鍔状部２ａに連続形成されるランプ１２を覆う透光面部２ｃとを有する。グローブ２の寸法形状は図２６と同様に縦寸法５００〜５５０ｍｍ程度、横寸法１３００ｍｍ程度で、外鍔状部２ａの張出しは３５〜４０ｍｍと大きくしてある。係合具３は、グローブ２の開口部２ｂの周縁に沿う方向に移動可能なように器具本体１の周縁壁部１ａの内面に沿って取付けられている。係合具３の形状は略溝形であり、その対向する一片から下方に係止部３ｂが垂下され、他片から側方に操作部３ａが突設される。係止部３ｂはグローブ２を吊持できるように略鉤形に形成されている。操作部３ａは周縁壁部１ａに設けた開口１ｂから突出し器具本体１の外側から操作可能である。
【００１０】
係止具４は、グローブ２の開口部２ｂの少なくとも一辺に沿って取付けられた略剛体状の部材である。この場合、係止具４は２枚の板金により外鍔状部２ａを挟み込んだ状態でビス５を締め付けることによりグローブ２に取付けられる。また、係止具４の２枚の板金が重なり合った水平部分には角穴の被係止部４ａが設けられ、係止部３ｂが被係止部４ａに引っ掛かることでグローブ２を保持する。すなわち、係合具３の移動によって係止部３ｂと被係止部４ａが係脱自在に係止するとともに、操作部３ａを操作して係合具３をスライドさせることで係止部３ｂと被係止部４ａの係止状態が解除される。
【００１１】
つぎに上記構成の照明器具のグローブの取付けおよび取外しについて説明する。グローブ２の取付け時には、グローブ２を持ち上げて係止部３ｂを角穴の被係止部４ａに入れて引っ掛ける。このとき、図４に示すように、係止部３ｂに傾斜したガイド部３ｄが形成されているので、このガイド部３ｄに被係止部４ａが当接することで係合具３がＢ方向にスライドして係止部３ｂが被係止部４ａに円滑に入る。この後、操作部３ａを操作し係合具３をＣ方向にスライドさせ係止部３ｂと被係止部４ａを係止することによりグローブ２が支持される。また、グローブ２を取外すときは操作部３ａを逆方向に操作して係止部３ｂと被係止部４ａの係止状態を解除すればよい。
【００１２】
以上のようにこの実施の形態によれば、グローブ２側の係止具４と器具本体１側の係合具３を係止させることで係止状態となり、また操作部３ａを操作することにより係止状態を解除できる。このため、グローブ２の取付けまたは取外し時にグローブ２を引き下げたり押し上げたりする必要がなく、グローブ２に大きなストレスをかけなくてすみ、グローブ２を着脱または保持する際に生じていた応力を低減できる。これは薄型で外鍔状部の張出しが大きい角形グローブ等、成形品自体の強度が期待できないものについて有用であり、このようなグローブを用いて薄型照明器具を開発する場合の強度上の問題を改善できる。
【００１３】
また、図５〜図７はグローブ２の取外し時に落下することを防止した安全構造を示す。図５（ａ）はこの発明の第１の実施の形態の変形例の要部分解斜視図、（ｂ），（ｃ）はその安全構造の説明図である。図５（ａ）に示すように、被係止部４ａの隣に小穴４ｂを設け、係止部３ｂに凹部３ｅを設けている。この場合、図５（ｂ）の係止状態から、係合具３をスライドさせると、被係止部４ａと小穴４ｂの間の部分が凹部３ｅに嵌まり１度引っ掛かる。そのためグローブ２を持ち上げながら係合具３をスライドさせて取外す。図６（ａ）はこの発明の第１の実施の形態の別の変形例の要部分解斜視図、（ｂ），（ｃ）はその安全構造の説明図である。図６（ａ）に示すように、係止部３ｂの係止と反対側の下部に突部３ｆを設けている。この場合、図６（ｂ）の係止状態から、係合具３をスライドさせると、突部３ｆが被係止部４ａに係止しグローブ２が仮吊り状態になり、操作部３ａを放すと開放される。図７（ａ）はこの発明の第１の実施の形態のさらに別の変形例、（ｂ），（ｃ）はその安全構造の説明図である。図７（ａ）に示すように、係止部３ｂが２つの段部３ｇからなる。この場合、図７（ａ）の係止状態から、係合具３をスライドさせると、下側の段部３ｇで仮吊り状態となり、さらにスライドさせると開放する。これらの構造による部品点数を増やさずに二重安全構造が可能となる。
【００１４】
この発明の第２の実施の形態の照明器具を図８に基づいて説明する。図８はこの発明の第２の実施の形態の照明器具の要部斜視図である。
【００１５】
図８において、６はばね、６ａはばね止め金具である。ばね止め金具６ａは器具本体１側に固定されている。このばね止め金具６ａにばね６の一端が固定され、他端が係合具３に固定されている。これにより、ばね６は係止部３ｂと被係止部４ａが係止するようにＣ方向に係合具３を弾発付勢している。したがって、この実施の形態では、グローブ２の取付け時においてグローブ２を器具本体１に押し付ける際に、ガイド部３ｄに被係止部４ａが当接することで、係合具３が係止具４との係止位置から相対的に逃げるように移動後、係止状態に復帰する。この実施の形態によれば、不意にグローブ２が落下するおそれがなくなる。その他の構成効果は、第１の実施の形態と同様である。
【００１６】
この発明の第３の実施の形態の照明器具を図９に基づいて説明する。図９はこの発明の第３の実施の形態の照明器具の要部斜視図である。
【００１７】
図９において、７は操作レバー（操作部）、８，９は係合具、１０，１１はばね、１２，１３はばね止め金具である。操作レバー７は一端が器具本体１の開口１ｂより突出し、器具本体１の外側から操作可能である（図１参照）。他端は三角形状で斜辺７ａ，７ｂを有する。係合具８，９は、第１の実施の形態と同様に被係止部４ａ，４ａに係止する係止部８ａ，９ａを有する。ばね１０，１１とばね止め金具１２，１３の取付構造は第２の実施の形態と同様であるが、ばね１０，１１は係合具８，９を近接する方向に弾発付勢し、これによって係止部８ａ，９ａと被係止部４ａ，４ａがそれぞれ係止する。また、操作レバー７の斜辺７ａ，７ｂが係合具８，９の対向する端部に当接し、操作レバー７を器具本体１側へ押すことにより係合具８，９が遠ざかるようにスライドし、係止部８ａ，９ａと被係止部４ａ，４ａの係止状態が解除される。また、操作レバー７を放すとばね１０，１１により係止状態に復帰する。その他の構成効果は、第１の実施の形態と同様である。
【００１８】
この発明の第４の実施の形態の照明器具を図１０〜図１３に基づいて説明する。図１０はこの発明の第４の実施の形態の照明器具の断面側面図、図１１は図１０のＤ部の拡大図、図１２はこの発明の第４の実施の形態においてグローブ取外しの動作説明図、図１３は図１２の次の状態の動作説明図である。
【００１９】
図１０において、Ｅ部は第１〜３の実施の形態に示した構造と同様である。１４，１６は引掛け金具、１５は連結材、１７は安定器、１８は反射板、１９はランプ，２４は受け具である。図１０および図１１に示すように、一方の引掛け金具１４はグローブ２側に取付けられ、他方の引掛け金具１６は器具本体１側に取付けられている。受け具２４は係止具４と対向側に位置し、係止具４と同様にグローブ２の開口部２ｂに固定される。この場合、一方の引掛け金具１４は受け具２４に固着され、受け具２４より上方に突出した部分を略Ｕ形に折曲げて屈曲した部分に保持部１４ａが形成してある。また、他方の引掛け金具１６は器具本体１の周縁壁部１ａに固着され、下端に保持部１６ａが形成してある。そして、連結材１５の両端に設けた軸１５ａ，１５ａが、保持部１４ａ，１６ａに挿入されて回動自在に保持される。また、連結材１５は線材や板材などであり、グローブ２を取付位置に保持できる材質で形成される。
【００２０】
つぎに上記構成の照明器具のグローブの取外し動作について説明する。図１０の状態からＥ部の係止を解除すると、図１２および図１３に示すように、引掛け金具１４，１６と連結材１５は蝶番のように動作し、グローブ２が仮吊り状態となる。これは器具本体１より外鍔状部２ａの張出しの大きいグローブ２の際に特に効果がある。すなわち、図１４はこの発明の実施の形態と比較するために示した従来例であり、６０は器具本体、６１はグローブである。図１４に示す通り、Ｆ部を支点としてグローブ６１を開くとグローブ６１が天井に当たってしまい、グローブ６１が開かず割れてしまうことがあるが、上記実施の形態の構成によりこのような問題を解消できる。なお、仮吊り構造を蝶番のように折り畳むことにより、本体高さＨ₁も低くできる。また、軸１５ａと保持部１４ａは着脱自在であり、保持部１４ａから軸１５ａを取外すことでグローブ２を器具本体１から分離することができる。
【００２１】
この発明の第５の実施の形態の照明器具を図１５〜図１９に基づいて説明する。図１５はこの発明の第５の実施の形態の照明器具の断面側面図、図１６は図１５の要部拡大斜視図、図１７はこの発明の第５の実施の形態においてグローブの取外しの動作説明図、図１８は図１７の次の状態の動作説明図、図１９は図１８の次の状態の動作説明図である。
【００２２】
図１５および図１６において、Ｅ部は第１〜３の実施の形態に示した構造と同様である。１７は保持金具、１８は受金具、１９は仮吊用線材である。保持金具１７は器具本体１側に取付けられ、受金具１８はグローブ２側に取付けられる。この場合、保持金具１７は器具本体１の周縁壁部１ａに固定され、水平部１７ａとこれに連続し下方へ傾斜した傾斜部１７ｂとからなる。受金具１８は係止具４と対向側に位置し、係止具４と同様にグローブ２の開口部２ｂに固定される。また、受金具１８の垂直部分に保持金具１７を挿入可能な開口部１８ａが設けてある。仮吊用線材１９は、一端が受金具１８に着脱自在に取付けられ、他端が器具本体１に固定される。
【００２３】
つぎに上記構成の照明器具のグローブの取付けおよび取外し動作について説明する。グローブ２の取付けの際には、まず保持金具１７を受金具１８の開口部１８ａに挿入させるようにグローブ２を器具本体１の周縁壁部１ａに近づける。このとき、開口部１８ａが水平部１７ａに位置することで、受金具１８が保持金具１７に支持される。その後、反対側のＥ部を第１〜３の実施の形態の構造により取付ける。グローブ２を外す際には、図１５の状態からＥ部側の係止を解除すれば、グローブ２の自重により図１７〜図１９に示すように、受金具１８が保持金具１７の傾斜部１７ｂに沿って下方へ移動していき反対側は自然に外れる。開口部１８ａが保持金具１７から抜けると仮吊用線材１９でグローブ２が吊持され、これにより安全性、作業性が向上する。この構成によれば、器具本体１から張出しが大きいグローブ２を取外す際の問題が解消できる。
【００２４】
以上のように第４，５の実施の形態では、仮吊機能により安全性、メンテナンス時の作業性が向上する。また、器具本体１の高さを低くでき、張出しの大きいリエンドグローブでも取扱いに支障をきたさない。
【００２５】
【発明の効果】
この発明の照明器具によれば、グローブの開口部の少なくとも一辺に沿って取付けられて被係止部を有する係止具と、この係止具に対応する器具本体の周縁壁部にグローブの開口部の周縁に沿う方向に移動可能に取付けられて係止部を有する係合具とを備え、係合具が移動して係止部と被係止部が係止することによりグローブが支持され、かつ係止状態が解除するように係合具を移動させる操作部を、器具本体の外側から操作できるように設けたので、グローブ側の係止具と器具本体側の係合具を係止させることで係止状態となり、また操作部を操作することにより係止状態を解除できる。このため、グローブの取付けまたは取外し時にグローブを引き下げたり押し上げたりする必要がなく、グローブに大きなストレスをかけなくてすみ、グローブを着脱または保持する際に生じていた応力を低減できる。これは薄型で外鍔状部の張出しが大きい角形グローブ等、成形品自体の強度が期待できないものについて有用であり、このようなグローブを用いて薄型照明器具を開発する場合の強度上の問題を改善できる。また、係止状態が解除する状態で、係止具が係止状態の位置よりも下方の位置で係合具に再度係止するように、係合具の係止部の突出方向と反対側の下部に被係止部が係止する突部を設けたので、部品点数を増やさずに二重安全構造が可能となる。
【図面の簡単な説明】
【図１】この発明の第１の実施の形態の照明器具の要部分解斜視図である。
【図２】この発明の実施の形態の照明器具の斜視図である。
【図３】図２のＡ−Ａ断面図である。
【図４】この発明の第１の実施の形態におけるグローブの取付状態を示す説明図である。
【図５】（ａ）はこの発明の第１の実施の形態の変形例の要部分解斜視図、（ｂ），（ｃ）はその安全構造の説明図である。
【図６】（ａ）はこの発明の第１の実施の形態の別の変形例の要部分解斜視図、（ｂ），（ｃ）はその安全構造の説明図である。
【図７】（ａ）はこの発明の第１の実施の形態のさらに別の変形例の要部分解斜視図、（ｂ），（ｃ）はその安全構造の説明図である。
【図８】この発明の第２の実施の形態の照明器具の要部斜視図である。
【図９】この発明の第３の実施の形態の照明器具の要部斜視図である。
【図１０】この発明の第４の実施の形態の照明器具の断面側面図である。
【図１１】図１１は図１０のＤ部の拡大図である。
【図１２】この発明の第４の実施の形態においてグローブ取外しの動作説明図である。
【図１３】図１２の次の状態の動作説明図である。
【図１４】この発明の実施の形態と比較するために示した従来例の説明図である。
【図１５】この発明の第５の実施の形態の照明器具の断面側面図である。
【図１６】図１５の要部拡大斜視図である。
【図１７】この発明の第５の実施の形態においてグローブの取外しの動作説明図である。
【図１８】図１７の次の状態の動作説明図である。
【図１９】図１８の次の状態の動作説明図である。
【図２０】（ａ）は照明器具の斜視図、（ｂ）は照明器具の別の例の斜視図である。
【図２１】従来の落とし込み方式の支持構造を示す説明図である。
【図２２】従来のキック方式の支持構造を示す説明図である。
【図２３】従来の樹脂抱え方式の支持構造を示す説明図である。
【図２４】従来の問題点を示す説明図である。
【図２５】従来の照明器具の断面図である。
【図２６】（ａ）は従来にない薄型の照明器具の斜視図、（ｂ）はその断面図である。
【符号の説明】
１器具本体
１ａ周縁壁部
２グローブ
２ａ外鍔状部
２ｂ開口部
３係合具
３ａ操作部
３ｂ係止部
４係止具
４ａ被係止部
７操作部
８，９係合具
８ａ，９ａ係止部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting fixture having a trimless (frameless) cover.
[0002]
[Prior art]
The conventional lighting fixture with a trimless cover is a lighting fixture as shown in FIGS. 20 (a) and 20 (b), and means a fixture with a resin cover without a frame. FIG. 20A shows a lighting fixture used in a conference room and the like, and FIG. 20B shows a residential lighting fixture. Reference numeral 50 denotes a main body, and 51 denotes a resin cover (glove). As for the resin cover mounting structure, there are many known techniques such as rotating the resin cover or pushing and pulling the resin cover for the round housing shown in FIG. In addition, in the square instrument using the 40 W size straight tube fluorescent lamp shown in FIG. 20 (a), the drop mounting as shown in FIG. 21, the kick spring system as shown in FIG. 22, and as shown in FIG. A simple resin holding method is disclosed. In FIG. 21, the resin cover 51 is dropped and supported on the outer peripheral edge of the main body 50. 22 (a) and 22 (b), 52 is a spring mounting bracket, 53 is a kick spring, and 54 is a spring receiver. In this case, the compressed kick spring 53 is returned in the spring receiver 54 to be locked. In FIG. 23, 55 is a spring and 56 is a support member. In this case, the spring 55 is biased so that the resin cover 51 can be supported by the support member 56.
[0003]
[Problems to be solved by the invention]
However, in the case of the conventional method, the resin cover is held when the resin cover is attached / detached and held, and is pulled down or pushed up, so that stress is generated at the overhanging portion (point P) of the resin cover 51 as shown in FIG. . On the other hand, in the conventional rectangular and trimless resin cover, as shown in FIG. 25, since the overhang D is about 20 to 25 mm and the height H is about 70 mm, the wall thickness t ₁ after the resin molding is secured. There was no problem in terms of strength against the stress described above. However, as shown in FIGS. 26A and 26B, an unprecedented thin (height H is about 40 mm), overhang D is large (about 35-40 mm), and a larger (for Hf32W4 lamp) resin cover. When developing the attached lighting fixture, it is difficult to secure the wall thickness t ₂ after resin molding (about 0.5 to 1 mm) with the conventional mounting method, and the overhang is large, resulting in the overhang portion (point P). Stress increases, causing problems in strength (cracks, cracks, etc.).
[0004]
Accordingly, an object of the present invention is to provide a luminaire that can reduce the stress generated in the glove when the glove is attached / detached or held in order to solve the above-described problems.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a lighting fixture according to claim 1 of the present invention is a rectangular fixture body which is fixed to a mounting surface and has a lamp and which has a peripheral wall portion on the periphery, and is inserted into the peripheral wall portion. Direct illumination with a square opening, a glove having an outer casing-like part protruding outward from the opening and a translucent surface part covering a lamp continuously formed on the outer casing-like part A locking tool that is attached along at least one side of the opening of the glove and has a locked portion, and the opening of the glove on the peripheral wall of the tool body corresponding to the locking tool And an engaging tool having a locking portion that is movably attached in a direction along a peripheral edge of the glove, and the glove moves when the locking tool is locked and the locking portion is locked. Is moved and the engagement tool is moved so that the locked state is released. The operation unit is provided so that it can be operated from the outside of the instrument body, and the locking device is locked again to the engagement tool at a position lower than the locked state when the locking state is released. As described above, a protruding portion for locking the locked portion is provided at a lower portion of the engaging tool on the opposite side to the protruding direction of the locking portion .
[0006]
As described above, the locking tool attached along at least one side of the opening of the globe and having the locked portion, and the peripheral wall of the instrument body corresponding to the locking tool along the periphery of the opening of the globe. And an engaging tool having a locking portion that is movably mounted in the direction, and the glove is supported and locked by moving the engaging tool and locking the locking portion and the locked portion. Since the operation part that moves the engagement tool so as to be released is provided so that it can be operated from the outside of the instrument body, it can be locked by locking the engagement tool on the glove side and the engagement tool on the instrument body side. The locked state can be released by operating the operation unit. For this reason, it is not necessary to pull down or push up the glove when attaching or removing the glove, and it is not necessary to apply a large stress to the glove, and the stress generated when the glove is attached or detached can be reduced. Further, in a state where the locked state is released, the side opposite to the protruding direction of the locking portion of the engaging tool so that the locking tool is locked again to the engaging tool at a position below the locked state. Since the protrusion to which the locked portion is locked is provided at the lower portion of the frame , a double safety structure is possible without increasing the number of parts.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The lighting fixture of 1st Embodiment of this invention is demonstrated based on FIGS. 1-4.
[0008]
1 is an exploded perspective view of a main part of a lighting fixture according to the first embodiment of the present invention, FIG. 2 is a perspective view of the lighting fixture according to the embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line AA in FIG. FIG. 4 is an explanatory view showing a glove attachment state according to the first embodiment of the present invention.
[0009]
1-3, 1 is a lighting fixture body, 2 is a plastic glove (trimless resin cover), 3 is an engaging tool (resin cover holding metal), and 4 is a locking tool (receiving metal). The instrument main body 1 is a rectangular member that is fixed to a mounting surface such as a ceiling, is equipped with a lamp 12, and has a peripheral wall portion 1a at the periphery. The globe 2 is formed continuously with a rectangular opening 2b inserted into the peripheral wall portion 1a, an outer hook-like portion 2a formed to project outward from the opening 2b, and the outer hook-like portion 2a. And a translucent surface portion 2 c that covers the lamp 12. The size and shape of the globe 2 are about 500 to 550 mm in length and about 1300 mm in width as in FIG. 26, and the overhang of the outer flange-shaped portion 2a is made large to 35 to 40 mm. The engaging tool 3 is attached along the inner surface of the peripheral wall 1a of the instrument body 1 so as to be movable in the direction along the peripheral edge of the opening 2b of the globe 2. The shape of the engagement tool 3 is a substantially groove shape, and a locking portion 3b is suspended downward from one opposing piece, and an operation portion 3a is projected laterally from the other piece. The locking portion 3b is formed in a substantially bowl shape so that the globe 2 can be suspended. The operation part 3a protrudes from the opening 1b provided in the peripheral wall part 1a, and can be operated from the outer side of the instrument body 1.
[0010]
The locking tool 4 is a substantially rigid member attached along at least one side of the opening 2 b of the globe 2. In this case, the locking tool 4 is attached to the globe 2 by tightening the screw 5 in a state where the outer flange-shaped portion 2a is sandwiched between the two metal plates. Further, a square hole locked portion 4a is provided in a horizontal portion where the two metal plates of the locking tool 4 overlap each other, and the locking portion 3b is hooked on the locked portion 4a to hold the globe 2. That is, the engaging part 3b and the locked part 4a are detachably locked by the movement of the engaging tool 3, and the engaging part 3 is slid by operating the operating part 3a. The locked state of the locked portion 4a is released.
[0011]
Next, attachment and removal of the globe of the lighting fixture having the above configuration will be described. When the glove 2 is attached, the glove 2 is lifted and the locking portion 3b is put into the locked portion 4a of the square hole and hooked. At this time, as shown in FIG. 4, since the inclined guide portion 3d is formed in the locking portion 3b, the engaged portion 3 is moved in the B direction by the locked portion 4a coming into contact with the guide portion 3d. The locking portion 3b slides smoothly into the locked portion 4a. Thereafter, the glove 2 is supported by operating the operating portion 3a to slide the engaging tool 3 in the C direction to lock the locking portion 3b and the locked portion 4a. Moreover, what is necessary is just to release the latching state of the latching | locking part 3b and the to-be-latched part 4a by operating the operation part 3a to a reverse direction, when removing the globe 2. FIG.
[0012]
As described above, according to this embodiment, the locking device 4 on the glove 2 side and the engaging device 3 on the instrument body 1 side are locked, and the operation unit 3a is operated. The locked state can be released. For this reason, it is not necessary to pull down or push up the glove 2 when attaching or removing the glove 2, and it is not necessary to apply a large stress to the glove 2, and the stress generated when the glove 2 is attached or detached can be reduced. This is useful for thin glove that cannot be expected to be strong, such as a square glove with a large overhang of the outer casing, and it is a strength problem when developing a thin luminaire using such a glove. Can improve.
[0013]
Moreover, FIGS. 5-7 shows the safety structure which prevented falling when the glove 2 was removed. FIG. 5A is an exploded perspective view of an essential part of a modification of the first embodiment of the present invention, and FIGS. 5B and 5C are explanatory views of the safety structure. As shown to Fig.5 (a), the small hole 4b is provided next to the to-be-latched part 4a, and the recessed part 3e is provided in the latching | locking part 3b. In this case, when the engagement tool 3 is slid from the locked state of FIG. 5B, the portion between the locked portion 4a and the small hole 4b fits into the concave portion 3e and is hooked once. Therefore, the engagement tool 3 is slid and removed while lifting the globe 2. FIG. 6A is an exploded perspective view of an essential part of another modification of the first embodiment of the present invention, and FIGS. 6B and 6C are explanatory views of the safety structure. As shown in FIG. 6A, a protrusion 3f is provided on the lower side opposite to the locking of the locking portion 3b. In this case, when the engagement tool 3 is slid from the locked state of FIG. 6B, the protrusion 3f is locked to the locked portion 4a, the glove 2 is temporarily suspended, and the operating portion 3a is released. And released. FIG. 7A is still another modification of the first embodiment of the present invention, and FIGS. 7B and 7C are explanatory views of the safety structure. As shown to Fig.7 (a), the latching | locking part 3b consists of two step parts 3g. In this case, when the engagement tool 3 is slid from the locked state shown in FIG. 7A, it is temporarily suspended by the lower step portion 3g, and is released when further slid. A double safety structure is possible without increasing the number of parts by these structures.
[0014]
The lighting fixture of 2nd Embodiment of this invention is demonstrated based on FIG. FIG. 8 is a perspective view of an essential part of a lighting fixture according to the second embodiment of the present invention.
[0015]
In FIG. 8, 6 is a spring and 6a is a spring stopper. The spring stopper 6a is fixed to the instrument body 1 side. One end of the spring 6 is fixed to the spring stopper 6 a and the other end is fixed to the engagement tool 3. Thereby, the spring 6 elastically urges the engaging tool 3 in the C direction so that the locking portion 3b and the locked portion 4a are locked. Therefore, in this embodiment, when the glove 2 is pressed against the instrument body 1 when the glove 2 is attached, the engaged part 3 and the engaging tool 4 are brought into contact with the guide part 3d. After moving so as to relatively escape from the locked position, the locked state is restored. According to this embodiment, there is no risk of the globe 2 dropping unexpectedly. Other structural effects are the same as those of the first embodiment.
[0016]
The lighting fixture of 3rd Embodiment of this invention is demonstrated based on FIG. FIG. 9 is a perspective view of an essential part of a lighting fixture according to a third embodiment of the present invention.
[0017]
In FIG. 9, 7 is an operation lever (operation part), 8 and 9 are engaging tools, 10 and 11 are springs, and 12 and 13 are spring clamps. One end of the operation lever 7 protrudes from the opening 1b of the instrument body 1 and can be operated from the outside of the instrument body 1 (see FIG. 1). The other end is triangular and has oblique sides 7a and 7b. The engaging tools 8 and 9 have locking portions 8a and 9a that are locked to the locked portions 4a and 4a, as in the first embodiment. The mounting structure of the springs 10 and 11 and the spring stoppers 12 and 13 is the same as that of the second embodiment, but the springs 10 and 11 elastically urge the engaging tools 8 and 9 in the approaching direction. As a result, the locking portions 8a and 9a and the locked portions 4a and 4a are locked. Further, the oblique sides 7a and 7b of the operation lever 7 abut against the opposing ends of the engagement tools 8 and 9, and the engagement tools 8 and 9 are slid away by pushing the operation lever 7 toward the instrument body 1 side. The locked state of the locking portions 8a and 9a and the locked portions 4a and 4a is released. When the operation lever 7 is released, the springs 10 and 11 return to the locked state. Other structural effects are the same as those of the first embodiment.
[0018]
The lighting fixture of 4th Embodiment of this invention is demonstrated based on FIGS. FIG. 10 is a cross-sectional side view of a lighting fixture according to a fourth embodiment of the present invention, FIG. 11 is an enlarged view of a portion D in FIG. 10, and FIG. 12 is an explanation of the operation of removing a glove in the fourth embodiment of the present invention. FIG. 13 and FIG. 13 are diagrams for explaining the operation in the next state of FIG.
[0019]
In FIG. 10, the E part is the same as the structure shown in the first to third embodiments. 14 and 16 are hook metal fittings, 15 is a connecting member, 17 is a ballast, 18 is a reflector, 19 is a lamp, and 24 is a receiver. As shown in FIGS. 10 and 11, one hook metal fitting 14 is attached to the globe 2 side, and the other hook metal fitting 16 is attached to the instrument body 1 side. The receiving tool 24 is located on the side opposite to the locking tool 4, and is fixed to the opening 2 b of the globe 2 in the same manner as the locking tool 4. In this case, one of the hooks 14 is fixed to the receiver 24, and a holding portion 14a is formed at a portion bent upward from the receiver 24 and bent into a substantially U shape. The other hook 16 is fixed to the peripheral wall 1a of the instrument body 1, and a holding portion 16a is formed at the lower end. Then, shafts 15a and 15a provided at both ends of the connecting member 15 are inserted into the holding portions 14a and 16a and held rotatably. Moreover, the connection material 15 is a wire, a board | plate material, etc., and is formed with the material which can hold | maintain the globe 2 in an attachment position.
[0020]
Next, a glove removing operation of the lighting fixture having the above-described configuration will be described. When the locking of the E portion is released from the state of FIG. 10, as shown in FIGS. 12 and 13, the hook metal parts 14 and 16 and the connecting member 15 operate like a hinge, and the globe 2 is temporarily suspended. . This is particularly effective in the case of the glove 2 in which the outer casing-like portion 2a is larger than the instrument body 1. That is, FIG. 14 is a conventional example shown for comparison with the embodiment of the present invention, in which 60 is an instrument body and 61 is a glove. As shown in FIG. 14, when the globe 61 is opened with the F portion as a fulcrum, the globe 61 hits the ceiling, and the globe 61 may be broken without being opened, but such a problem can be solved by the configuration of the above embodiment. . The main body height H ₁ can also be lowered by folding the temporary suspension structure like a hinge. The shaft 15a and the holding portion 14a are detachable, and the globe 2 can be separated from the instrument body 1 by removing the shaft 15a from the holding portion 14a.
[0021]
The lighting fixture of 5th Embodiment of this invention is demonstrated based on FIGS. 15-19. 15 is a cross-sectional side view of a lighting fixture according to a fifth embodiment of the present invention, FIG. 16 is an enlarged perspective view of an essential part of FIG. 15, and FIG. 17 is an operation of removing a glove in the fifth embodiment of the present invention. FIG. 18 is an explanatory diagram of operation in the next state of FIG. 17, and FIG. 19 is an explanatory diagram of operation in the next state of FIG.
[0022]
15 and FIG. 16, the E part is the same as the structure shown in the first to third embodiments. 17 is a holding metal fitting, 18 is a receiving metal fitting, and 19 is a wire for temporary suspension. The holding metal fitting 17 is attached to the instrument main body 1 side, and the receiving metal fitting 18 is attached to the globe 2 side. In this case, the holding metal fitting 17 is fixed to the peripheral wall portion 1a of the instrument body 1, and includes a horizontal portion 17a and an inclined portion 17b that is continuous and inclined downward. The catch 18 is positioned on the side opposite to the locking tool 4 and is fixed to the opening 2 b of the globe 2 in the same manner as the locking tool 4. Further, an opening 18 a into which the holding metal fitting 17 can be inserted is provided in a vertical part of the metal fitting 18. One end of the temporary suspension wire 19 is detachably attached to the metal fitting 18, and the other end is fixed to the instrument body 1.
[0023]
Next, a description will be given of the operation of attaching and removing the globe of the lighting fixture having the above-described configuration. When attaching the glove 2, first, the glove 2 is brought close to the peripheral wall 1 a of the instrument body 1 so that the holding metal 17 is inserted into the opening 18 a of the receiving metal 18. At this time, since the opening 18 a is positioned at the horizontal portion 17 a, the receiving metal fitting 18 is supported by the holding metal fitting 17. Then, the E part on the opposite side is attached by the structure of the first to third embodiments. When the glove 2 is removed, if the lock on the E portion side is released from the state of FIG. 15, the receiving metal 18 is attached to the inclined portion 17 b of the holding metal 17 as shown in FIGS. The other side will come off naturally. When the opening 18a is removed from the holding metal member 17, the globe 2 is suspended by the temporary suspension wire 19, thereby improving safety and workability. According to this structure, the problem at the time of removing the glove 2 with a large overhang | projection from the instrument main body 1 can be eliminated.
[0024]
As described above, in the fourth and fifth embodiments, the temporary suspension function improves safety and workability during maintenance. Moreover, the height of the instrument body 1 can be reduced, and even a re-end glove with a large overhang does not hinder the handling.
[0025]
【The invention's effect】
According to the lighting apparatus of the present invention, the locking tool attached along at least one side of the opening of the globe and having the locked portion, and the opening of the globe in the peripheral wall portion of the tool body corresponding to the locking tool And an engaging tool having a locking part that is movably attached in the direction along the periphery of the part, and the glove is supported by the locking tool and the locked part being locked by moving the engaging tool. And the operation part that moves the engaging tool so that the locked state is released is provided so that it can be operated from the outside of the instrument body, so the locking tool on the glove side and the engaging tool on the instrument body side are locked. It becomes a locked state by making it operate | move, and a locked state can be cancelled | released by operating an operation part. For this reason, it is not necessary to pull down or push up the glove when attaching or removing the glove, and it is not necessary to apply a large stress to the glove, and the stress generated when the glove is attached or detached can be reduced. This is useful for thin glove that cannot be expected to be strong, such as a square glove with a large overhang of the outer casing, and it is a strength problem when developing a thin luminaire using such a glove. Can improve. Further, in a state where the locked state is released, the side opposite to the protruding direction of the locking portion of the engaging tool so that the locking tool is locked again to the engaging tool at a position below the locked state. Since the protrusion to which the locked portion is locked is provided at the lower portion of the frame , a double safety structure is possible without increasing the number of parts.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part of a lighting fixture according to a first embodiment of the present invention.
FIG. 2 is a perspective view of a lighting fixture according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line AA in FIG.
FIG. 4 is an explanatory diagram showing a glove attachment state according to the first embodiment of the present invention.
FIG. 5 (a) is an exploded perspective view of an essential part of a modification of the first embodiment of the present invention, and FIGS. 5 (b) and (c) are explanatory views of the safety structure.
FIG. 6A is an exploded perspective view of the main part of another modification of the first embodiment of the present invention, and FIGS. 6B and 6C are explanatory views of the safety structure thereof.
7A is an exploded perspective view of a main part of still another modified example of the first embodiment of the present invention, and FIGS. 7B and 7C are explanatory views of the safety structure thereof.
FIG. 8 is a perspective view of an essential part of a lighting fixture according to a second embodiment of the present invention.
FIG. 9 is a perspective view of an essential part of a lighting fixture according to a third embodiment of the present invention.
FIG. 10 is a sectional side view of a lighting fixture according to a fourth embodiment of the present invention.
FIG. 11 is an enlarged view of a portion D in FIG.
FIG. 12 is an explanatory diagram of the operation of removing the globe in the fourth embodiment of the present invention.
13 is an operation explanatory diagram of the next state of FIG. 12. FIG.
FIG. 14 is an explanatory diagram of a conventional example shown for comparison with an embodiment of the present invention.
FIG. 15 is a sectional side view of a lighting fixture according to a fifth embodiment of the present invention.
16 is an enlarged perspective view of a main part of FIG.
FIG. 17 is an explanatory diagram of an operation for removing a glove in the fifth embodiment of the present invention.
18 is an operation explanatory diagram of the next state of FIG.
FIG. 19 is an operation explanatory diagram of the next state of FIG. 18;
20A is a perspective view of a lighting fixture, and FIG. 20B is a perspective view of another example of the lighting fixture.
FIG. 21 is an explanatory view showing a conventional drop-type support structure.
FIG. 22 is an explanatory view showing a conventional kick-type support structure.
FIG. 23 is an explanatory view showing a conventional support structure of a resin holding method.
FIG. 24 is an explanatory diagram showing a conventional problem.
FIG. 25 is a cross-sectional view of a conventional lighting fixture.
FIG. 26A is a perspective view of a conventional thin lighting fixture, and FIG. 26B is a cross-sectional view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument body 1a Peripheral wall part 2 Globe 2a Outer collar part 2b Opening part 3 Engagement tool 3a Operation part 3b Locking part 4 Locking tool 4a Locked part 7 Operation part 8, 9 Engagement tool 8a, 9a Stop

Claims

A square instrument body which is fixed to the mounting surface and is equipped with a lamp and which has a peripheral wall portion on the periphery, a rectangular opening portion which is inserted into the peripheral wall portion, and an outer casing which is formed to project outward from the opening portion. And a glove having a translucent surface part covering a lamp continuously formed on the outer casing-like part, and is attached along at least one side of the opening of the glove A locking tool having a locked portion, and an engagement having a locking portion attached to a peripheral wall portion of the instrument body corresponding to the locking tool so as to be movable in a direction along the peripheral edge of the opening of the glove. The glove is supported by moving the engagement tool and the locking portion and the locked portion are locked, and the engagement tool is moved so that the locked state is released. An operating part to be operated from the outside of the instrument body, In a state in which the state is released, so that the locking device is again locked to the engaging member at a position lower than the position of the locked condition, the side opposite to the projecting direction of the engaging portion of the engaging member The lighting fixture characterized by providing the protrusion which the said to-be-latched part latches in the lower part of this .