JP4244660B2

JP4244660B2 - Ceiling mounted lighting fixture

Info

Publication number: JP4244660B2
Application number: JP2003054147A
Authority: JP
Inventors: 卓哉信田; 宏樹中尾
Original assignee: Panasonic Corp; Matsushita Electric Works Ltd
Current assignee: Panasonic Corp; Panasonic Electric Works Co Ltd
Priority date: 2003-02-28
Filing date: 2003-02-28
Publication date: 2009-03-25
Anticipated expiration: 2023-02-28
Also published as: JP2004265708A

Description

【０００１】
【発明の属する技術分野】
本発明は、天井直付け型照明器具に関するものである。
【０００２】
【従来の技術】
従来から天井に直付けする照明器具は、器具本体の下側にグローブと称される透光性の下カバーを取付けたもので、器具本体の中央部を天井に密着して取付けている。（例えば特許文献１参照）
ところが上記の従来例にあっては、器具本体の下面側の透光性の下カバーを光が透過して照明器具の下方を照明するだけであった。つまり、器具本体の中央部以外は天井との間に隙間があり、この器具本体と天井との間の隙間が暗い影となっていた。
【０００３】
また、他の従来例としては図１９、図２０に示すような天井直付け型照明器具も知られている（非特許文献１参照）。この図１９、図２０に示す従来例は、取付け金具５０、内側本体５１、上透光カバー５２を一体に固定した外側本体５３の３部材により器具本体５４を構成し、天井５’に取付けた配線部品１２を囲むように取付け金具５０を天井５’に取付け、取付け金具５０に内側本体５１をねじ５５により取付け、次に、内側本体５１に上透光カバー５２を固定した外側本体５３をねじ５６により取付け、上記のようにして天井５’に取付けた器具本体５４に透光性の下カバー５７を取付けるようになっている。
【０００４】
この図１９、図２０に示す従来例は器具本体５４の外周部の天井５’と密着していない非密着部５８に上透光カバー５２を器具本体５４に備えた放電灯１’の光が透過して上透光カバー５２と天井５’との間の隙間５９を照らして天井直付け型照明器具の周囲を間接照明するようになっている。
【０００５】
ところが、この従来例にあっては、器具本体５４の天井５’への取付けに当たって上記のようにねじ５５、５６による数度の取付け作業が必要であり、取付けが面倒であるだけでなく、いったん天井５’に取付けた後にはねじ５５、５６による取付けであるため、天井５から容易には素人では取り外すことができないのみならず上透光カバー５２は外側本体５３に固着してあって取り外して交換することができず、いったん天井直付け型照明器具を天井５’に取付けた後は、上透光カバー５２による間接光色や配光が固定されてしまいって居住者自身で上透明カバーによる間接光色や配光を変えることが出来ないという問題があった。また、図１９、図２０に示す従来のものにおいては、下カバー５７と器具本体５４との取付け部分において両者の間に隙間５９がある非密閉構造のものであるため、虫が侵入し、掃除やメンテナンスを頻繁に行わなければならないという問題があった。
【０００６】
【特許文献１】
特開平８−３１２１４号公報
【非特許文献１】
松下電工株式会社照明分社住宅照明事業部発行のカタログ「ＬＩＧＨＴＩＮＧＭＯＤＥ」Ｅｘｐｅｒｔ、２００２，２００３年版のＢ６２−Ｂ６５
【０００７】
【発明が解決しようとする課題】
本発明は上記の点に鑑みてなされたものであり、簡単な構成で天井直付け照明器具の周囲を間接照明できると共に、照明器具の周囲における間接光色や配光が簡単に変更でき、また、防虫構造にできて省メンテナンスが実現でき、また、薄型化が図れ、更に環状をした放電灯の径の異なるものに対応できる天井直付け型照明器具を提供することを課題とするものである。
【０００８】
【課題を解決するための手段】
上記課題を解決するために本発明に係る天井直付け型照明器具は、放電灯１を備えた器具本体２の下方に透光性の下カバー３を取付けた天井直付け型照明器具４であって、器具本体２の中央部が天井５に密着する密着部１３となると共に周囲が天井５と密着することなく天井５との間に隙間６を形成するようにした非密着部７となり、上記非密着部７の放電灯１の上方位置に該器具本体２に備えた放電灯１からの光を非密着部７と天井５との間の上記隙間６に通過させるための採光用開口部８を設け、非密着部７上に採光用開口部８を覆う透光性上カバー９を着脱自在に配設し、平面視において器具本体２の中央部の密着部１３が器具本体２の面積の５０％以下で、照明器具４サイズが平面視でφ３５０〜９００ｍｍ、又は平面視で３５０×３５０ｍｍ〜９００×３５０ｍｍ、又は平面視で（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）で、非密着部７と天井５との隙間寸法が３０〜７０ｍｍであることを特徴とするものである。
【０００９】
このような構成とすることで、放電灯１の光が透光性の下カバー３を透過して下方を直接照明するのに加え、天井直付け型照明器具４において器具本体２の非密着部７と天井５との間の隙間６に放電灯１からの光が透光性上カバー９を透過して隙間６が光って間接照明がなされるものであり、特に、平面視において器具本体２の中央部の密着部が器具本体２の面積の５０％以下で、照明器具４サイズが平面視でφ３５０〜９００ｍｍ、又は平面視で３５０×３５０ｍｍ〜９００×３５０ｍｍ、又は平面視で（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）で、非密着部７と天井５との隙間６寸法が３０〜７０ｍｍであるので、透光性上カバー９を上方に透過する光で効果的な間接照明効果が得られて天井５から天井直付け型照明器具４が浮かんでいるような軽快なイメージを与え、また、透光性上カバー９を通過した上方配光が天井５に局部的な高い輝度の部分をつくることない構造にできる。しかも、上記透光性上カバー９が着脱自在であるため、透光性上カバー９を交換して間接光色や間接光の配光を簡単に変更することができるものである。
【００１０】
また、透光性上カバー９を器具本体２にねじ具１０により取付け、器具本体２に下カバー３を支持するための下カバー受け１１をねじ具１０により取付け、上記透光性カバーを器具本体２に取付けるねじ具１０と、器具本体２に下カバー受け１１を取付けるねじ具１０とが共通のねじ具１０で兼用していることが好ましい。
【００１１】
このような構成とすることで、器具本体２に透光性上カバー９を着脱自在に取付けるためのねじ具１０を器具本体２に下カバー受け１１を取付けるためのねじ具１０と兼用できて、部材点数を少なくすることができる。
【００１２】
また、器具本体２への下カバー３、透光性上カバー９の取付け部分が外部との隙間６が１ｍｍ以下の密閉構造であることが好ましい。
【００１３】
このような構成とすることで、内部に虫が侵入しない防虫構造にできるものである。
【００１４】
また、天井５に下面に引掛けシーリングローゼットのコンセント２５を備え且つ外周部に係止突部１４を備えた配線部品１２を設け、器具本体２の中央部の密着部１３に上下に開口する取付け用開口部２３を設けると共に該取付け用開口部２３の内面に採光用開口部８内に突出する方向のばね力が付与された出没自在な係止部材１５を設け、取付け用開口部２３を配線部品１２に嵌め込むと共に係止部材１５を係止突部１４に係止して器具本体２を配線部品１２に取付け、配線部品１２に設けたコンセント２５に器具本体２に備えた引掛けシーリングローゼットのプラグ２２を着脱自在に接続することが好ましい。
【００１５】
このような構成とすることで、器具本体２をねじ具などを用いることなく、係止により簡単に取付けることができ、また、器具本体２への天井５の配線部品１２との電気的接続も容易に行える。
【００１６】
また、放電灯１が環状をしており、この環状をした放電灯１の内側に点灯回路１６、点灯回路１６を制御するための制御部１７を配置することが好ましい。
【００１７】
このような構成とすることで、環状をした放電灯１の上方に点灯回路１６、制御部１７を配置すると上下方向の厚みが厚くなり、しかも、放電灯１から上方に向かう光の一部を遮光して透光性上カバー９を透過する光の光量がすくなくなってしまうが、このようなおそれが防止できる。
【００１８】
また、点灯回路１６の下部に制御部１７を配置した一体構造とし、制御部１７に常夜灯を構成するＬＥＤ１９を付設していることが好ましい。
【００１９】
このような構成とすることで、点灯回路１６、リモコン受光部のような制御部１７を一体物として全体をコンパクトにし、しかも、常夜灯を構成するＬＥＤ１９を制御部１７に設けることで、常夜灯を設けるものであるにもかかわらずＬＥＤ１９により薄くできて、いっそうのコンパクト化、薄型化が図れることになる。
【００２０】
また、放電灯１が環状をしており、器具本体２に環状をした放電灯１を支持するための放電灯支持ばね２０とランプソケット２１とを器具本体２の直径方向に位置変更自在に取付けることが好ましい。
【００２１】
このような構成とすることで、環状をした放電灯１の径の異なるものに対応することができる。
【００２２】
また、器具本体２の中央部の密着部１３の外周形状を平面視円形状とし、器具本体２の密着部１３の周囲の非密着部７を外周側が下となるよう段状に形成し、段状をした非密着部７の内周側である上段部７ａの外周形状を平面視略小判形状とし、段状をした非密着部７の外周側である下段部７ｂの外周形状を平面視円形状とし、外周形状が平面視略小判形状をした非密着部７の上段部７ａに点灯回路１６、制御部１７を取付け、非密着部７の下段部７ｂに採光用開口部８を設け、該採光用開口部８を透光性上カバー９で覆ってあることが好ましい。
【００２３】
このような構成とすることで、最小限のスペースに点灯回路１６、制御部１７を合理的に配置しながら非密着部７と天井５との間の隙間６のうち外観から見える部分の隙間６をできるだけ広くとり、この隙間６が前述のように光ることによって宙に浮いているような外観にできる。
【００２８】
【発明の実施の形態】
以下、本発明を添付図面に示す実施形態に基づいて説明する。
【００２９】
本発明の天井直付け型照明器具４は、放電灯１を装備する器具本体２と、器具本体２の下側に着脱自在に取付ける透光性の下カバー３と、器具本体２の上側に着脱自在に取付ける透光性上カバー９とで構成してある。
【００３０】
器具本体２は金属板により形成してあり、図１乃至図６に示すように、器具本体２の中央部が天井５に密着する密着部１３となると共に周囲が天井５と密着することなく天井５との間に隙間６を形成するようにした非密着部７となっている。
【００３１】
器具本体２の中央部には図３、図６に示すように上下に開口する取付け用開口部２３を設けてある。器具本体２内には取付け用開口部２３内に向けて出没自在な係止部材１５が設けてあり、この係止部材１５にはばね材２４により係止部材１５を取付け用開口部２３内に突出させる方向のばね力が付与してある。また、係止部材１５には摘みが設けてあってこの摘みは器具本体２の下面側に露出していて下方から指で摘みを操作することでばね材２４に抗して係止部材１５を取付け用開口部２３内に突出しないように引き込ませることができるようになっている。
【００３２】
図３に示すように、器具本体２の中央部の上記密着部１３は外周形状が平面視円形状となっており、上記取付け用開口部２３を囲むように外周形状が平面視円形をした密着部１３が設けてある。この密着部１３は器具本体２を後述のように天井５に設けた配線部品１２に取付けて接続した状態で上面部が天井５にばね４５のばね力により弾接して密着するようになっている。
【００３３】
器具本体２の上記密着部１３を設けた部分の周囲は図１、図３乃至図６に示すように非密着部７となっており、この非密着部７は外周側が下となるよう段状（２段）に形成してあり、この段状をした非密着部７の内周側である上段部７ａの外周形状が平面視略小判形状となっており、段状をした非密着部７の外周側である下段部７ｂの外周形状が平面視円形状となっている。
【００３４】
非密着部７の下段部７ｂの下面側には環状の放電灯１を支持するための放電灯支持ばね２０とランプソケット２１とが取付けてある。具体的な取付け構造については後述する。放電灯支持ばね２０に環状をした放電灯１を支持させ、放電灯１の接続ピンをランプソケット２１に接続することで器具本体２に環状の放電灯１を取付けるようになっている。
【００３５】
また、非密着部７の下段部７ｂには図２に示すように複数の採光用開口部８が環状に並ぶように形成してある。この環状に並んだ複数の採光用開口部８は器具本体２の下面側に上記のようにして環状の放電灯１を取付けた状態で略上方位置となる部分に形成してある。上記採光用開口部８は器具本体２に備えた放電灯１からの光を非密着部７と天井５との間の上記隙間６に通過させるために形成してある。この非密着部７の下段部７ｂの上面には図１、図３、図４に示すように、ドーナツ状をした透光性上カバー９が着脱自在に載置してあって、この透光性上カバー９により上記環状に並んで形成された複数の採光用開口部８が覆ってある。
【００３６】
透光性上カバー９はねじ具１０により器具本体２に着脱自在に取付けられるのであるが、この場合、透光性上カバー９を器具本体２に取付けるための上記ねじ具１０を利用して図７のように器具本体２の下面側に下カバー受け１１を取付けている。つまり、上記透光性上カバー９を器具本体２に取付けるねじ具１０と、器具本体２に下カバー受け１１を取付けるねじ具１０とが共通のねじ具１０で兼用してある。透光性上カバー９が器具本体２に対して取付け部分から虫が侵入しないように密閉的に取付けてある。ここで、透光性上カバー９の下面部にはプリズム形状をしたプリズム形状部９ａが形成してあり、プリズム形状部９ａの周囲にリブ９ｂが突設してあり、透光性上カバー９を非密着部７の下段部７ｂに載置した状態でプリズム形状部９ａ、リブ９ｂ部分が採光用開口部８に嵌り込んでいる。なお、図８に示すリブ９ｂと採光用開口部８の縁との間の隙間Ｓ１も１ｍｍ以下としてもよい。
【００３７】
器具本体２には環状をした放電灯１の内側に安定器のような点灯回路１６、該点灯回路１６を制御するためのリモコン受光部のような制御部１７を配置して取付けてある。具体的には図１、図２に示すように、外周形状が平面視略小判形状をした上段部７ａの突出部２６部分に点灯回路１６、制御部１７が取付けてある。なお、点灯回路１６、制御部１７は上段部７ａの下面側に位置するだけでなく一部は器具本体２の密着部１３を上方に突設した部分の下面側に位置している。
【００３８】
ここで、点灯回路１６の下部にリモコン受光部のような制御部１７を配置した一体構造の電装品ブロックとなっており、更に制御部１７に常夜灯を構成するＬＥＤ１９を付設してある。このように点灯回路１６、リモコン受光部と常夜灯を付設した制御部１７を上下に積層した一体物として全体をコンパクトにし、しかも、常夜灯を制御部１７に付設したものであるにもかかわらず、常夜灯をＬＥＤ１９とすることで、いっそうのコンパクト化、薄型化が図れるようにしてあり、これにより環状をした放電灯１の内側において外周形状が平面視略小判形状をした上段部７ａの突出部２６部分に点灯回路１６、制御部１７を配置して取付けることができる。
【００３９】
天井５には図６に示すように、下面に引掛けシーリングローゼットのコンセント２５を備え且つ外周部に係止突部１４を備えた配線部品１２を設けてある。
【００４０】
前述の構造の放電灯１を備え且つ上面部に透光性上カバー９を着脱自在に取付けた器具本体２は中央部の密着部１３に設けた取付け用開口部２３を配線部品１２に嵌め込むと共に係止部材１５を係止突部１４に係止して器具本体２を配線部品１２に取付けると共に密着部１３を天井５の下面に密着させ、更に配線部品１２に設けたコンセント２５に器具本体２に備えた引掛けシーリングローゼットのプラグ２２を着脱自在に接続することで天井５に直付けする。
【００４１】
器具本体２の下面側にはグローブと称される透光性を有する下カバー３が取付けられる。下カバー３の上部には内周方向に向けて突出した外側上片部２７が一体に設けてありこの外側上片部２７の突出先端部に囲まれた部分が環状をした開口２８となっており、外側上片部２７の突出先端部の周方向の複数箇所に部分的に取付け用突部２９が突設してある。
【００４２】
前述の器具本体２に取付けた下カバー受け１１には外側方に向けて載置部１１ａが設けてある。
【００４３】
そして、下カバー３を器具本体２の下面側に配置すると共に取付け用突部２９が下カバー受け１１と上下方向に一致しないようにし、この状態で下カバー３を上方に押し上げて下カバー３の外側上片部２７の突出最先端の上横片２７ａを器具本体２の下段部７ｂに押し当て、この状態で下カバー３を平面視で回動して取付け用突部２９をカバー受け１１の載置部１１ａに載置することで下カバー３を器具本体２の下面側に取付ける。この場合、上横片２７ａと器具本体２の下段部７ｂとの間の隙間Ｓ３が１ｍｍ以下となるように設定してあって、下カバー３が取付け部分から虫が侵入しないように器具本体２に対して密閉的に取付けてある。
【００４４】
次に、非密着部７の下段部７ｂの下面側に放電灯支持ばね２０とランプソケット２１とを取付ける例につき説明する。放電灯支持ばね２０とランプソケット２１とはいずれも器具本体２の直径方向に位置変更自在に取付けてある。
【００４５】
器具本体２の非密着部７の下段部７ｂには図１０、図１１に示すようにソケットカバー３０が取付けてあり、このソケットカバー３０は図１２に示すようなもので下面板部３１に長孔３２が形成してあり、この長孔３２は器具本体２の直径方向に長くなっている（ソケットカバー３０と器具本体２の中心とを結ぶ仮想線に沿って長くなっている）。下面板部３１の長孔３２の側部には器具本体２の直径方向に複数箇所（図１０乃至図１２においては２箇所の例が示してある）の係止孔３３が設けてある。ランプソケット２１は図１３に示すようなもので、ソケット本体２１ａの下面の片側から嵌め込み突部２１ｂを突設し、嵌め込み突部２１ｂの下面両側に対向するように一対の保持ばね２１ｃを突設すると共に嵌め込み突部２１ｂの下面中央からソケット部２１ｄを突設してある。嵌め込み突部２１ｂには図１４に示すような枠形状をしたソケット可動板３４が被嵌してあり、このソケット可動板３４の一辺部には先端が自由端となった山形形状をした弾性を有する係止爪３４ａが設けてある。
【００４６】
ランプソケット２１はソケット本体２１ａをソケットカバー３０内に嵌め込むと共に嵌め込み突部２１ｂをソケットカバー３０の下面板部３１の長孔３２に嵌挿してソケット部２１ｄを下面板部３１より下方に突出させることでソケットカバー３０に取付けてある。そして、ランプソケット２１は嵌め込み突部２１ｂを長孔３２に沿って移動することで器具本体２の直径方向に移動自在となっている。ここで、嵌め込み突部２１ｂに被嵌したソケット可動板３４はソケット本体２１ａとソケットカバー３０の下面板部３１の内面（上面）との間に挟まれており、係止爪３４ａを器具本体２の直径方向に複数箇所設けた係止孔３３のうち任意の係止孔３３に挿入係止してあって、ソケットカバー３０に対してランプソケット２１が移動できないように保持している。係止爪３４ａの係止孔３３への係止を解除してソケットカバー３０に対してランプソケット２１を器具本体２の直径方向に移動させ、図１０、図１１に示すように別の係止孔３３に係止爪３４ａを係止することで、直径の異なる複数種類の環状の放電灯１に対応する位置にランプソケット２１を移動して保持させることができる。図１０は直径の大きい環状の放電灯１の場合を示し、図１１は直径の小さい環状の放電灯１の場合を示す。
【００４７】
このようなランプソケット２１にはソケット部２１ｄに放電灯１の接続ピンを接続すると共に上記一対の保持ばね２１ｃにより放電灯１を保持するものである。
【００４８】
また、器具本体２の非密着部７の下段部７ｂには図１５に示すように下方に凹曲した凹部３５が設けてあり、この凹部３５は器具本体２の直径方向に細長い凹みとなっている。凹部３５の底部には器具本体２の直径方向に長い長孔３６が設けてある。また、凹部３５の底部には器具本体２の直径方向に複数の係合孔３７が設けてある。細長い凹みとなった凹部３５内には図１７に示すような可動ブロック３８が器具本体２の直径方向に移動自在に嵌め込んであり、凹部３５の上開口を器具本体２に取付けた蓋３９により遮蔽してある。長孔３６内に放電灯支持ばね２０の上端部を位置させて可動ブロック３８にねじ４０により固着してある。可動ブロック３８には両側に弾性を有する腕部３８ａが設けてあり、該腕３８ａの先端部に係合部３８ｂが設けてあり、該係合部３８ｂを器具本体２の直径方向に複数設けた係合孔３７のうち任意の位置の係合孔３７に係合自在となっている。ここで、少し力を入れて放電灯支持ばね２０を長孔３６に沿って移動すると、係合部３８ｂが係合孔３７から外れるので、この状態で更に移動して他の係合孔３７に係合部３８ｂを係合することで、直径の異なる複数種類の環状の放電灯１に対応する位置に放電灯支持ばね２０を移動して保持させることができる。図１５は直径の大きい環状の放電灯１を放電灯支持ばね２０で支持している場合を示し、図１６は直径の小さい環状の放電灯１を放電灯支持ばね２０で支持している場合を示す。放電灯支持ばね２０には環状の放電灯１が図１５（ａ）図１６のように支持される。
【００４９】
上記ランプソケット２１、複数の凹部３５はそれぞれ図２に示すように非密着部７の下段部７ｂに環状に並ぶように設けた採光用開口部８と採光用開口部８との間に設けてあり、ランプソケット２１や電灯支持ばね２０の取付け部分に邪魔されることなく放電灯１からの光が採光用開口部８を通過できるように構成してある。
【００５０】
上記のような天井直付け型照明器具４は放電灯１を点灯することで、下カバー３を透過して下方を直接照明するものであり、同時に放電灯１から上方に出た光は採光用開口部８から透光性上カバー９を透過して器具本体２の非密着部７と天井５との間の隙間６を明るく照らすと共に隙間６の周囲の外方の天井５下面付近を照らして間接照明をすものである。
【００５１】
下カバー３を取付けた天井直付け型照明器具４の器具本体２は下から見上げた場合、図４の線Ａより下側（イ側）が見えない部分、上側（ロ側）が見える部分となるのであるが、非密着部７と天井５との間に隙間６を設けているので、この部分を下から見ると隙間６だけが見えてほとんど器具本体２が見えないものである。そして、この器具本体２が下から見えないような構成としたものにおいて、上記のように器具本体２の非密着部７と天井５との間の隙間６及びその外周の天井５下面付近が明るく光るのであるが、非密着部７と天井５との間の隙間６があるため、この隙間６が光って該光る部分が宙に浮かんでいるように見えることになる。つまり、本発明においては天井直付け型照明器具４の周囲の天井５付近を単に間接照明するだけでなく、天井直付け型照明器具４と天井５との間の隙間６が光ってこの部分が宙に浮いて見えるような照明効果を現出することができるものである。
【００５２】
ここで、非密着部７の上段部７ａは外周形状が平面視略小判形状をし、この上段部７ａに点灯回路１６、制御部１７を取付けてあるので、略小判形状の突出部分に点灯回路１６、制御部１７を取付けることで、できるだけ器具本体２が隙間６内における下から見えないようにしており、これにより光る隙間６をできるだけ広くとることができ、この広くとった隙間６が前述のように光ることによって宙に浮いているような外観をより効果的に現出できる。
【００５３】
また、透光性上カバー９にプリズム形状をしたプリズム形状部９ａが形成してあることで、透光性上カバー９を上方に透過する光を外側に向けて配向することができて間接照明効果を上げることができる。
【００５４】
ところで、本発明においては、前述の非密着部７と天井５との間の隙間６に向けて光を透過させるための採光用開口部８を覆う透光性上カバー９が非密着部７に対して着脱自在となっているので、透光性上カバー９を交換することで間接光色や間接光の配色を自由に選択することができるものである。透光性上カバー９を交換するには下カバー３を平面視で回動して取付け用突部２９をカバー受け１１から外して取り外し、次に、係止部材１５の摘みを指先で摘んで外側方に移動することで係止部材１５を配線部品１２の係止突部１４から外し、配線部品１２に設けたコンセントから器具本体２に備えた引掛けシーリングローゼットのプラグ２２を外し、このようにして器具本体２を取り外した状態で、ねじ具１０を外してドーナツ状をした透光性上カバー９を取り外し、色やプリズム形状部９ａの形状の異なるものあるいはプリズム形状部９ａを備えないもの等、他の種類の透光性上カバー９と交換して再びねじ具１０で取付け、器具本体２を配線部品１２に取付け、器具本体２に下カバー３を取付けることで、放電灯１からの上方に向かって透光性上カバー９を透過する光の色や配光を変えることができるものである。
【００５５】
これにより、天井直付け型照明器具４取付け後に、居住者自身により簡単に間接光色や配光を変えて室内における照明の雰囲気を変えることができる。
【００５６】
図１８には下カバー３の周囲に透光性枠４１を配設した例であり、このように下カバー３の周囲に透光性枠４１を配設することで、上方への光が天井５面に反射して透光性枠４１を上部から照らすことで従来よりも軽快なイメージの照明ができることになる。
【００５７】
なお、上記実施形態では天井直付け型照明器具４として平面視で円形のものの例を示したが、平面視正方形又は長方形であってもよい。ここで、平面視円形の天井直付け型照明器具４は平面視でφ３５０〜９００ｍｍのものであり、又は平面視正方形のものは３５０×３５０ｍｍ（つまり３５０ｍｍ角）〜９００×９００ｍｍ（つまり９００ｍｍ角）、又は平面視長方形のものは（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）のものである。
【００５８】
上記のように、天井直付け型照明器具４のサイズが平面視でφ３５０〜９００ｍｍ、又は平面視で３５０×３５０ｍｍ〜９００×９００ｍｍ角、又は平面視で（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）のものの場合、下カバー３を取付けた天井直付け型照明器具４を下から見上げた場合に器具本体２の大部分が見えず、且つ、器具本体２の非密着部７と天井５との間の隙間６が光って該光る部分が宙に浮いているように見えるようにするには、平面視において器具本体２の中央部の密着部１３が器具本体２の面積の５０％以下で、非密着部７と天井５との隙間６の寸法が３０〜７０ｍｍにするとよい。これにより透光性上カバー９を上方に透過する光で効果的な間接照明効果が得られて天井５から天井直付け型照明器具４が浮かんでいるような軽快なイメージを与え、また、透光性上カバー９を通過した上方配光が天井５に局部的な高い輝度の部分をつくることない構造にできるものである。
【００５９】
【発明の効果】
上記のように本発明の請求項１記載の発明にあっては、放電灯を備えた器具本体の下方に透光性の下カバーを取付けた天井直付け型照明器具であって、器具本体の中央部が天井に密着する密着部となると共に周囲が天井と密着することなく天井との間に隙間を形成するようにした非密着部となり、上記非密着部の放電灯の上方位置に該器具本体に備えた放電灯からの光を非密着部と天井との間の上記隙間に通過させるための採光用開口部を設け、非密着部上に採光用開口部を覆う透光性上カバーを着脱自在に配設してあるので、放電灯の光が透光性の下カバーを透過して下方を直接照明するのに加え、天井直付け型照明器具において器具本体の非密着部と天井との間の隙間に放電灯からの光が透光性上カバーを透過して隙間が光って間接照明がなされるものであり、特に、平面視において器具本体２の中央部の密着部が器具本体２の面積の５０％以下で、照明器具４サイズが平面視でφ３５０〜９００ｍｍ、又は平面視で３５０×３５０ｍｍ〜９００×３５０ｍｍ、又は平面視で（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）で、非密着部７と天井５との隙間６寸法が３０〜７０ｍｍであるので、透光性上カバーを上方に透過する光で効果的な間接照明効果が得られて天井から天井直付け型照明器具が浮かんでいるような軽快なイメージを与え、また、透光性上カバーを通過した上方配光が天井に局部的な高い輝度の部分をつくることない構造にできる。しかも、上記透光性上カバーが着脱自在であるため、透光性上カバーを交換することで間接光色や間接光の配光を簡単に変更して照明のイメージを簡単に変更することができるものである。
【００６０】
また、請求項２記載の発明にあっては、上記請求項１記載の発明の効果に加えて、透光性上カバーを器具本体にねじ具により取付け、器具本体に下カバーを支持するための下カバー受けをねじ具により取付け、上記透光性カバーを器具本体に取付けるねじ具と、器具本体に下カバー受けを取付けるねじ具とが共通のねじ具で兼用しているので、器具本体に透光性上カバーを着脱自在に取付けるためのねじ具を器具本体に下カバー受けを取付けるためのねじ具と兼用できて、部材点数を少なくできて、コストを低減できるものである。
【００６１】
また、請求項３記載の発明にあっては、上記請求項１又は請求項２記載の発明の効果に加えて、器具本体への下カバー、透光性上カバーの取付け部分が外部との隙間が１ｍｍ以下の密閉構造であるので、内部に虫が侵入しない防虫構造にできるものである。
【００６２】
また、請求項４記載の発明にあっては、上記請求項１乃至請求項３のいずれかに記載の発明の効果に加えて、天井に下面に引掛けシーリングローゼットのコンセントを備え且つ外周部に係止突部を備えた配線部品を設け、器具本体の中央部の密着部に上下に開口する取付け用開口部を設けると共に該取付け用開口部の内面に取付け用開口部内に突出する方向のばね力が付与された出没自在な係止部材を設け、取付け用開口部を配線部品に嵌め込むと共に係止部材を係止突部に係止して器具本体を配線部品に取付け、配線部品に設けたコンセントに器具本体に備えた引掛けシーリングローゼットのプラグを着脱自在に接続してあるので、器具本体をねじ具などを用いることなく、係止により簡単に取付けることができ、また、器具本体への天井の配線部品との電気的接続も容易に行え、これにより間接光色や間接光の配光を変更するための上カバーの交換が容易に行えるものである。
【００６３】
また、請求項５記載の発明にあっては、上記請求項１乃至請求項４のいずれかに記載の発明の効果に加えて、放電灯が環状をしており、この環状の放電灯の内側に点灯回路、点灯回路を制御するための制御部を配置してあるので、環状をした放電灯の上方に点灯回路、制御部を配置すると上下方向の厚みが厚くなり、しかも、放電灯から上方に向かう光の一部を遮光して透光性上カバーを透過する光の光量がすくなくなってしまうが、このようなおそれが防止できるものである。
【００６４】
また、請求項６記載の発明にあっては、上記請求項５記載の発明の効果に加えて、点灯回路の下部に制御部を配置した一体構造とし、制御部に常夜灯を構成するＬＥＤを付設しているので、点灯回路、制御部を一体物として全体をコンパクトにし、しかも、常夜灯を制御部に付設するものであるにもかかわらず、常夜灯をＬＥＤとすることで、いっそうのコンパクト化、薄型化が図れるものである。
【００６５】
また、請求項７記載の発明にあっては、上記請求項１乃至請求項６のいずれかに記載の発明の効果に加えて、放電灯が環状をしており、器具本体に環状の放電灯を支持するための放電灯支持ばねとランプソケットとを器具本体の直径方向に位置変更自在に取付けているので、環状をした放電灯の径の異なるものに対応することができるものである。
【００６６】
また、請求項８記載の発明にあっては、上記請求項１乃至請求項７のいずれかに記載の発明の効果に加えて、器具本体の中央部の密着部の外周形状を平面視円形状とし、器具本体の密着部の周囲の非密着部を外周側が下となるよう段状に形成し、段状をした非密着部の内周側である上段部の外周形状を平面視略小判形状とし、段状をした非密着部の外周側である下段部の外周形状を平面視円形状とし、外周形状が平面視略小判形状をした非密着部の上段部に点灯回路、制御部を取付け、非密着部の下段部に採光用開口部を設け、該採光用開口部を透光性上カバーで覆ってあるので、最小限のスペースに点灯回路、制御部を合理的に配置しながら非密着部と天井との間の隙間のうち外観から見える部分の隙間をできるだけ広くとり、この隙間が前述のように光ることによって宙に浮いているような外観を効果的に現出できる。
【図面の簡単な説明】
【図１】本発明の天井直付け型照明器具の取付け状態を示す断面図である。
【図２】同上の下カバーを外した状態の下面図である。
【図３】同上の天井直付け型照明器具の平面図である。
【図４】同上の一部破断した側面図である。
【図５】同上の側面図である。
【図６】同上の天井直付け型照明器具の取付け順序を示す説明図である。
【図７】同上の透光性上パネルの取付け部分の断面図である。
【図８】同上の要部拡大断面図である。
【図９】同上の下カバーの取付け部分の断面図である。
【図１０】同上のランプソケットの取付けを示し、（ａ）は下面図であり、（ｂ）は側面図であり、（ｃ）は正面図である。
【図１１】同上のランプソケットの取付け位置を変更した状態を示し、（ａ）は下面図であり、（ｂ）は側面図である。
【図１２】同上に用いるソケットカバーを示し、（ａ）は下面図であり、（ｂ）は上下逆にした状態の斜視図である。
【図１３】同上に用いるランプソケットを示し、（ａ）は下面図であり、（ｂ）は正面図であり、（ｃ）は側面図である。
【図１４】同上に用いるソケット可動板を示し、（ａ）は下面図であり、（ｂ）は側面図であり、（ｃ）は上下逆にした状態の斜視図である。
【図１５】同上の放電灯支持ばねの取付けを示し、（ａ）は側面断面図であり、（ｂ）は正面断面図であり、（ｃ）は下面図である。
【図１６】同上の放電灯支持ばねの取付け位置を変更した例を示す側面断面図である。
【図１７】同上に用いる可動ブロックを示し、（ａ）は上下逆にした状態の斜視図であり、（ｂ）は下面図であり、（ｃ）は側面図であり、（ｄ）は正面図である。
【図１８】本発明の他の実施形態の側面図である。
【図１９】従来例を示す一部破断した側面図である。
【図２０】同上の取付け順序を示す説明図である。
【符号の説明】
１放電灯
２器具本体
３下カバー
４天井直付け型照明器具
５天井
６隙間
７非密着部
７ａ上段部
７ｂ下段部
８採光用開口部
９透光性上カバー
１０ねじ具
１１下カバー受け
１２配線部品
１３密着部
１４係止突部
１５係止部材
１６点灯回路
１７制御部
１９ＬＥＤ
２０放電灯支持ばね
２１ランプソケット
２２プラグ
２３取付け用開口部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling-mounted lighting fixture.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a lighting fixture that is directly attached to a ceiling has a translucent lower cover called a glove attached to the lower side of the fixture body, and a central portion of the fixture body is attached in close contact with the ceiling. (For example, see Patent Document 1)
However, in the above-described conventional example, the light is transmitted through the translucent lower cover on the lower surface side of the fixture body and only the lower portion of the lighting fixture is illuminated. That is, there was a gap between the ceiling except for the central part of the instrument body, and the gap between the instrument body and the ceiling was a dark shadow.
[0003]
As another conventional example, a ceiling-mounted lighting fixture as shown in FIGS. 19 and 20 is also known (see Non-Patent Document 1). In the conventional example shown in FIGS. 19 and 20, an instrument main body 54 is constituted by three members of an outer main body 53 integrally fixed to a mounting bracket 50, an inner main body 51, and an upper translucent cover 52, and attached to the ceiling 5 ′. The mounting bracket 50 is mounted on the ceiling 5 ′ so as to surround the wiring component 12, the inner main body 51 is mounted on the mounting bracket 50 with a screw 55, and then the outer main body 53 with the upper translucent cover 52 fixed to the inner main body 51 is screwed. The translucent lower cover 57 is attached to the instrument body 54 attached to the ceiling 5 'as described above.
[0004]
In the conventional example shown in FIGS. 19 and 20, the light from the discharge lamp 1 ′ provided with the upper translucent cover 52 on the non-contact portion 58 that is not in close contact with the ceiling 5 ′ of the outer peripheral portion of the device main body 54. The light is transmitted and illuminates a gap 59 between the upper light-transmitting cover 52 and the ceiling 5 ′ so as to indirectly illuminate the periphery of the direct lighting fixture.
[0005]
However, in this conventional example, in order to attach the instrument main body 54 to the ceiling 5 ', it is necessary to perform several installation operations with the screws 55 and 56 as described above. Since it is attached with screws 55 and 56 after being attached to the ceiling 5 ′, it cannot be easily removed from the ceiling 5 by an amateur, but the upper translucent cover 52 is fixed to the outer body 53 and removed. Once the ceiling-mounted light fixture cannot be exchanged and once attached to the ceiling 5 ′, the indirect light color and light distribution by the upper light-transmitting cover 52 are fixed, and the resident himself / herself has an upper transparent cover. There was a problem that the indirect light color and light distribution due to cannot be changed. 19 and 20, since the non-sealed structure has a gap 59 between the lower cover 57 and the instrument body 54 at the attachment portion thereof, insects can enter and clean. There was a problem that maintenance had to be performed frequently.
[0006]
[Patent Document 1]
JP-A-8-31214
[Non-Patent Document 1]
Catalog “LIGHTINGMODE” Expert published by Matsushita Electric Works Co., Ltd., Lighting Division, B62-B65, 2002, 2003 edition
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and can indirectly illuminate the ceiling-mounted lighting fixture with a simple configuration, and can easily change the indirect light color and light distribution around the lighting fixture. It is an object of the present invention to provide a ceiling-mounted illuminator that can be made into an insect-proof structure, can realize maintenance-saving, can be reduced in thickness, and can cope with an annular discharge lamp having a different diameter. .
[0008]
[Means for Solving the Problems]
In order to solve the above problems, a ceiling-mounted lighting fixture according to the present invention is a ceiling-mounted lighting fixture 4 in which a translucent lower cover 3 is attached below a fixture body 2 provided with a discharge lamp 1. Thus, the central portion of the instrument body 2 becomes a close contact portion 13 that is in close contact with the ceiling 5 and the non-contact portion 7 is formed so that a gap 6 is formed between itself and the ceiling 5 without being in close contact with the ceiling 5. Above the discharge lamp 1 in the non-contact part 7 For allowing the light from the discharge lamp 1 provided in the instrument body 2 to pass through the gap 6 between the non-contact portion 7 and the ceiling 5. A daylighting opening 8 is provided, and a translucent upper cover 9 that covers the daylighting opening 8 is detachably disposed on the non-contact portion 7. , The close contact portion 13 at the center of the instrument body 2 in plan view is 50% or less of the area of the instrument body 2, and the size of the lighting fixture 4 is φ350 to 900 mm in plan view, or 350 × 350 mm to 900 × 350 mm in plan view, Or it is (100-400mm) x (500-1800mm) by planar view, and the clearance gap dimension of the non-contact | adherence part 7 and the ceiling 5 is 30-70mm. It is characterized by this.
[0009]
With such a configuration, the light of the discharge lamp 1 passes through the translucent lower cover 3 and directly illuminates the lower part, and the non-contact portion of the fixture body 2 in the ceiling-mounted illumination fixture 4 The light from the discharge lamp 1 passes through the translucent upper cover 9 into the gap 6 between the ceiling 7 and the ceiling 5. The gap 6 shines and indirect illumination is performed. In particular, the close contact portion of the central portion of the instrument main body 2 is 50% or less of the area of the instrument main body 2 in a plan view, and the size of the illumination fixture 4 is φ350˜ 900 mm, or 350 × 350 mm to 900 × 350 mm in plan view, or (100 to 400 mm) × (500 to 1800 mm) in plan view, and the clearance 6 between the non-contact portion 7 and the ceiling 5 is 30 to 70 mm. The light transmitted through the translucent upper cover 9 provides an effective indirect illumination effect, giving a light image as if the ceiling-mounted light fixture 4 is floating from the ceiling 5. Thus, the upper light distribution that has passed through the cover 9 can be structured so as not to create a locally high brightness portion on the ceiling 5. Moreover, since the translucent upper cover 9 is detachable, the translucent upper cover 9 can be replaced to easily change the indirect light color and the indirect light distribution.
[0010]
Further, the translucent upper cover 9 is attached to the instrument main body 2 with the screw tool 10, the lower cover receiver 11 for supporting the lower cover 3 is attached to the instrument main body 2 with the screw tool 10, and the translucent cover is attached to the instrument main body. It is preferable that the screw tool 10 attached to 2 and the screw tool 10 for attaching the lower cover receiver 11 to the tool body 2 are shared by the common screw tool 10.
[0011]
By adopting such a configuration, the screw tool 10 for detachably attaching the translucent upper cover 9 to the instrument body 2 can also be used as the screw tool 10 for attaching the lower cover receiver 11 to the instrument body 2. The number of members can be reduced.
[0012]
Moreover, it is preferable that the attachment part of the lower cover 3 and the translucent upper cover 9 to the instrument body 2 has a sealed structure in which a gap 6 between the outside and the outside is 1 mm or less.
[0013]
By setting it as such a structure, it can be made into the insect-proof structure which an insect does not penetrate | invade inside.
[0014]
In addition, the ceiling 5 is provided with a wiring part 12 having a ceiling rosette outlet 25 on the lower surface and a locking projection 14 on the outer periphery, and is attached to the contact portion 13 at the center of the instrument body 2 so as to open up and down. And a retractable locking member 15 provided with a spring force in a direction protruding into the daylighting opening 8 is provided on the inner surface of the mounting opening 23, and the mounting opening 23 is wired. The fitting main body 2 is attached to the wiring component 12 by being fitted into the component 12 and the locking member 15 is locked to the locking projection 14, and the hooking ceiling rosette provided in the appliance main body 2 on the outlet 25 provided on the wiring component 12. It is preferable that the plug 22 is detachably connected.
[0015]
With such a configuration, the instrument main body 2 can be easily attached by locking without using a screw tool or the like, and electrical connection with the wiring component 12 of the ceiling 5 to the instrument main body 2 is also possible. Easy to do.
[0016]
Moreover, it is preferable that the discharge lamp 1 has an annular shape, and the lighting circuit 16 and the control unit 17 for controlling the lighting circuit 16 are disposed inside the annular discharge lamp 1.
[0017]
With such a configuration, when the lighting circuit 16 and the control unit 17 are arranged above the annular discharge lamp 1, the thickness in the vertical direction increases, and a part of the light upward from the discharge lamp 1 is absorbed. The amount of light that is shielded and transmitted through the translucent upper cover 9 is reduced, but such a risk can be prevented.
[0018]
Further, it is preferable that the control unit 17 is disposed under the lighting circuit 16 and the control unit 17 is provided with an LED 19 constituting a night light.
[0019]
With such a configuration, the lighting circuit 16 and the control unit 17 such as a remote control light receiving unit are integrated into a compact body, and the LED 19 constituting the nightlight is provided in the control unit 17 so that the nightlight is provided. Although it is a thing, it can be made thinner by the LED 19, and further downsizing and thinning can be achieved.
[0020]
Further, the discharge lamp 1 has an annular shape, and a discharge lamp support spring 20 and a lamp socket 21 for supporting the annular discharge lamp 1 on the fixture body 2 are attached so that the position of the discharge lamp 1 can be changed in the diameter direction of the fixture body 2. It is preferable.
[0021]
By adopting such a configuration, it is possible to cope with the annular discharge lamp 1 having a different diameter.
[0022]
In addition, the outer peripheral shape of the contact portion 13 at the center of the instrument body 2 is circular in plan view, and the non-contact portion 7 around the contact portion 13 of the instrument body 2 is formed in a step shape with the outer peripheral side down. The outer peripheral shape of the upper step portion 7a, which is the inner peripheral side of the non-contact portion 7 having a shape, is a substantially oval shape in plan view, and the outer peripheral shape of the lower step portion 7b, which is the outer peripheral side of the step-shaped non-contact portion 7, is circular in plan view. The lighting circuit 16 and the control unit 17 are attached to the upper step portion 7a of the non-contact portion 7 whose outer peripheral shape is substantially oval in plan view, and the lighting opening 8 is provided in the lower step portion 7b of the non-contact portion 7, The daylighting opening 8 is preferably covered with a translucent upper cover 9.
[0023]
With such a configuration, the gap 6 that is visible from the exterior of the gap 6 between the non-contact portion 7 and the ceiling 5 while rationally arranging the lighting circuit 16 and the control unit 17 in the minimum space. Can be made as wide as possible, and the gap 6 shines as described above to make it appear as if it is floating in the air.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.
[0029]
The ceiling-mounted lighting fixture 4 of the present invention includes a fixture main body 2 equipped with the discharge lamp 1, a translucent lower cover 3 that is detachably attached to the lower side of the fixture main body 2, and a detachable attachment on the upper side of the fixture main body 2. It is comprised with the translucent upper cover 9 attached freely.
[0030]
The instrument body 2 is formed of a metal plate. As shown in FIGS. 1 to 6, the central part of the instrument body 2 becomes a close contact portion 13 that is in close contact with the ceiling 5 and the surroundings are not in close contact with the ceiling 5. 5 is a non-contact portion 7 in which a gap 6 is formed between the two.
[0031]
As shown in FIGS. 3 and 6, an attachment opening 23 that opens up and down is provided at the center of the instrument body 2. A locking member 15 is provided in the instrument body 2 so as to be able to project and retract toward the mounting opening 23, and the locking member 15 is placed in the mounting opening 23 by a spring material 24 on the locking member 15. A spring force in the protruding direction is applied. Further, the latching member 15 is provided with a knob, and this knob is exposed on the lower surface side of the instrument body 2 and is operated against the spring member 24 by operating the knob with a finger from below. The mounting opening 23 can be retracted so as not to protrude.
[0032]
As shown in FIG. 3, the contact portion 13 at the center portion of the instrument body 2 has a circular outer periphery shape in plan view, and the outer periphery shape has a circular shape in plan view so as to surround the mounting opening 23. A portion 13 is provided. The close contact portion 13 is configured such that the upper surface portion is elastically brought into close contact with the ceiling 5 by the spring force of the spring 45 in a state in which the instrument body 2 is attached to and connected to the wiring component 12 provided on the ceiling 5 as described later. .
[0033]
As shown in FIGS. 1 and 3 to 6, the periphery of the portion of the instrument body 2 where the contact portion 13 is provided is a non-contact portion 7, and the non-contact portion 7 is stepped so that the outer peripheral side is down. The outer peripheral shape of the upper step portion 7a that is formed in (two steps) and is the inner peripheral side of the stepped non-contact portion 7 is a substantially oval shape in plan view, and the stepped non-contact portion 7 The outer peripheral shape of the lower step portion 7b, which is the outer peripheral side, is a circular shape in plan view.
[0034]
A discharge lamp support spring 20 and a lamp socket 21 for supporting the annular discharge lamp 1 are attached to the lower surface side of the lower step portion 7 b of the non-contact portion 7. A specific mounting structure will be described later. The annular discharge lamp 1 is attached to the fixture body 2 by supporting the annular discharge lamp 1 on the discharge lamp support spring 20 and connecting the connection pin of the discharge lamp 1 to the lamp socket 21.
[0035]
Further, as shown in FIG. 2, a plurality of daylighting openings 8 are formed in the lower step 7b of the non-contact portion 7 so as to be arranged in a ring shape. The plurality of daylighting openings 8 arranged in a ring shape are formed in a substantially upper position when the ring-shaped discharge lamp 1 is attached to the lower surface side of the instrument body 2 as described above. The daylighting opening 8 is formed to allow light from the discharge lamp 1 provided in the fixture body 2 to pass through the gap 6 between the non-contact portion 7 and the ceiling 5. As shown in FIGS. 1, 3, and 4, a doughnut-shaped translucent upper cover 9 is detachably mounted on the upper surface of the lower step portion 7 b of the non-contact portion 7. A plurality of daylighting openings 8 formed so as to be arranged in a ring shape are covered by the cover 9.
[0036]
The translucent upper cover 9 is detachably attached to the instrument main body 2 by the screw tool 10. In this case, the translucent upper cover 9 is attached to the instrument main body 2 by using the screw tool 10. 7, a lower cover receiver 11 is attached to the lower surface side of the instrument body 2. That is, the screw 10 for attaching the translucent upper cover 9 to the instrument main body 2 and the screw 10 for attaching the lower cover receiver 11 to the instrument main body 2 are shared by the common screw 10. The translucent upper cover 9 is hermetically attached to the instrument body 2 so that insects do not enter from the attachment portion. Here, a prism-shaped prism-shaped portion 9 a is formed on the lower surface portion of the translucent upper cover 9, and ribs 9 b protrude from the periphery of the prism-shaped portion 9 a. Are mounted on the lower opening 7b of the non-contact portion 7, and the prism-shaped portion 9a and the rib 9b are fitted into the daylighting opening 8. The gap S1 between the rib 9b and the edge of the daylighting opening 8 shown in FIG. 8 may be 1 mm or less.
[0037]
A lighting circuit 16 such as a ballast and a control unit 17 such as a remote control light receiving unit for controlling the lighting circuit 16 are disposed and attached to the appliance main body 2 inside the annular discharge lamp 1. Specifically, as shown in FIGS. 1 and 2, the lighting circuit 16 and the control unit 17 are attached to the protruding portion 26 portion of the upper step portion 7 a whose outer peripheral shape is substantially oval in plan view. In addition, the lighting circuit 16 and the control unit 17 are not only located on the lower surface side of the upper stage portion 7a, but a part thereof is located on the lower surface side of the portion where the close contact portion 13 of the instrument body 2 protrudes upward.
[0038]
Here, it is an integrated electrical component block in which a control unit 17 such as a remote control light receiving unit is disposed below the lighting circuit 16, and an LED 19 that constitutes a nightlight is attached to the control unit 17. Although the lighting circuit 16, the remote control light receiving unit and the control unit 17 provided with the night light are integrated as a single unit, the whole is made compact, and the night light is attached to the control unit 17. By making the LED 19 into a more compact and thinner shape, the projecting portion 26 portion of the upper step portion 7a whose outer peripheral shape is substantially oval in plan view inside the annular discharge lamp 1 is thereby achieved. The lighting circuit 16 and the control unit 17 can be arranged and attached to.
[0039]
As shown in FIG. 6, the ceiling 5 is provided with a wiring component 12 having a hooking ceiling closet outlet 25 on the lower surface and a locking projection 14 on the outer periphery.
[0040]
The appliance main body 2 having the discharge lamp 1 having the above-described structure and having the translucent upper cover 9 detachably attached to the upper surface thereof is fitted into the wiring component 12 with the mounting opening 23 provided in the contact portion 13 at the center. At the same time, the locking member 15 is locked to the locking projection 14 to attach the instrument main body 2 to the wiring component 12, and the close contact portion 13 is brought into close contact with the lower surface of the ceiling 5. 2 is directly attached to the ceiling 5 by detachably connecting the plug 22 of the hanging ceiling closet provided in 2.
[0041]
A lower cover 3 having translucency called a glove is attached to the lower surface side of the instrument body 2. An outer upper piece 27 projecting in the inner circumferential direction is integrally provided on the upper portion of the lower cover 3, and a portion surrounded by the projecting tip of the outer upper piece 27 forms an annular opening 28. In addition, mounting projections 29 are partially provided at a plurality of locations in the circumferential direction of the protruding tip of the outer upper piece 27.
[0042]
The lower cover receiver 11 attached to the aforementioned instrument body 2 is provided with a placing portion 11a facing outward.
[0043]
Then, the lower cover 3 is disposed on the lower surface side of the instrument main body 2 and the mounting projection 29 is not aligned with the lower cover receiver 11 in the vertical direction. In this state, the lower cover 3 is pushed upward to raise the lower cover 3. The upper horizontal piece 27a at the foremost end of the outer upper piece 27 is pressed against the lower step 7b of the instrument body 2, and in this state, the lower cover 3 is rotated in plan view so that the mounting protrusion 29 is attached to the cover receiver 11. The lower cover 3 is attached to the lower surface side of the instrument body 2 by being placed on the placement portion 11a. In this case, the clearance S3 between the upper horizontal piece 27a and the lower step portion 7b of the instrument main body 2 is set to be 1 mm or less, and the instrument main body 2 prevents the lower cover 3 from entering from the attachment portion. It is attached hermetically against.
[0044]
Next, an example in which the discharge lamp support spring 20 and the lamp socket 21 are attached to the lower surface side of the lower step portion 7b of the non-contact portion 7 will be described. Both the discharge lamp support spring 20 and the lamp socket 21 are attached so that their positions can be changed in the diameter direction of the instrument body 2.
[0045]
A socket cover 30 is attached to the lower step portion 7b of the non-contact portion 7 of the instrument body 2 as shown in FIGS. 10 and 11, and the socket cover 30 is as shown in FIG. A hole 32 is formed, and the long hole 32 is elongated in the diameter direction of the instrument main body 2 (long along a virtual line connecting the socket cover 30 and the center of the instrument main body 2). A plurality of locking holes 33 (two examples are shown in FIGS. 10 to 12) are provided in the diameter direction of the instrument body 2 on the side of the long hole 32 of the lower surface plate portion 31. The lamp socket 21 is as shown in FIG. 13, and a fitting projection 21b is projected from one side of the lower surface of the socket body 21a, and a pair of holding springs 21c are projected so as to face both sides of the lower surface of the fitting projection 21b. In addition, a socket portion 21d is projected from the center of the lower surface of the fitting projection 21b. A socket movable plate 34 having a frame shape as shown in FIG. 14 is fitted on the fitting protrusion 21b, and one side portion of the socket movable plate 34 has a mountain-shaped elasticity with a free end at the tip. The latching claw 34a which has is provided.
[0046]
In the lamp socket 21, the socket body 21 a is fitted into the socket cover 30, and the fitting protrusion 21 b is fitted into the long hole 32 of the lower surface plate portion 31 of the socket cover 30 so that the socket portion 21 d protrudes downward from the lower surface plate portion 31. This is attached to the socket cover 30. The lamp socket 21 is movable in the diameter direction of the instrument body 2 by moving the fitting protrusion 21b along the long hole 32. Here, the socket movable plate 34 fitted to the fitting protrusion 21b is sandwiched between the socket main body 21a and the inner surface (upper surface) of the lower surface plate portion 31 of the socket cover 30, and the locking claw 34a is attached to the instrument main body 2. The lamp socket 21 is held so as not to move with respect to the socket cover 30 by being inserted and locked into any of the locking holes 33 provided in a plurality of positions in the diameter direction. The locking claw 34a is released from the locking hole 33 and the lamp socket 21 is moved in the diameter direction of the instrument body 2 with respect to the socket cover 30. As shown in FIGS. By locking the locking claw 34a in the hole 33, the lamp socket 21 can be moved and held at a position corresponding to a plurality of types of annular discharge lamps 1 having different diameters. FIG. 10 shows the case of the annular discharge lamp 1 having a large diameter, and FIG. 11 shows the case of the annular discharge lamp 1 having a small diameter.
[0047]
In such a lamp socket 21, a connection pin of the discharge lamp 1 is connected to the socket portion 21d and the discharge lamp 1 is held by the pair of holding springs 21c.
[0048]
Further, as shown in FIG. 15, the lower step portion 7 b of the non-contact portion 7 of the instrument main body 2 is provided with a concave portion 35 that is bent downward, and this concave portion 35 is an elongated recess in the diameter direction of the instrument main body 2. Yes. A long hole 36 that is long in the diameter direction of the instrument body 2 is provided at the bottom of the recess 35. A plurality of engagement holes 37 are provided in the diameter direction of the instrument body 2 at the bottom of the recess 35. A movable block 38 as shown in FIG. 17 is movably fitted in the diametrical direction of the instrument body 2 in the recess 35 that is an elongated recess, and the upper opening of the recess 35 is covered by a lid 39 attached to the instrument body 2. Shielded. The upper end portion of the discharge lamp support spring 20 is positioned in the long hole 36 and is fixed to the movable block 38 with a screw 40. The movable block 38 is provided with arm portions 38a having elasticity on both sides, an engaging portion 38b is provided at the tip of the arm 38a, and a plurality of engaging portions 38b are provided in the diameter direction of the instrument body 2. The engagement hole 37 is freely engageable with the engagement hole 37 at an arbitrary position. Here, when the discharge lamp support spring 20 is moved along the long hole 36 with a little force applied, the engaging portion 38b is disengaged from the engaging hole 37. By engaging the engaging portion 38b, the discharge lamp support spring 20 can be moved and held at positions corresponding to a plurality of types of annular discharge lamps 1 having different diameters. 15 shows a case where the annular discharge lamp 1 having a large diameter is supported by the discharge lamp support spring 20, and FIG. 16 shows a case where the annular discharge lamp 1 having a small diameter is supported by the discharge lamp support spring 20. Show. An annular discharge lamp 1 is supported on the discharge lamp support spring 20 as shown in FIGS.
[0049]
The lamp socket 21 and the plurality of recesses 35 are provided between a lighting opening 8 and a lighting opening 8 provided so as to be annularly arranged in the lower step portion 7b of the non-contact portion 7, as shown in FIG. The light from the discharge lamp 1 can pass through the daylighting opening 8 without being obstructed by the mounting portion of the lamp socket 21 and the lamp support spring 20.
[0050]
The ceiling-mounted lighting fixture 4 as described above illuminates the discharge lamp 1 to directly illuminate the lower part through the lower cover 3, and at the same time, light emitted upward from the discharge lamp 1 is used for lighting. Light is transmitted through the translucent upper cover 9 from the opening 8 to brightly illuminate the gap 6 between the non-contact part 7 of the instrument body 2 and the ceiling 5 and illuminate the vicinity of the lower surface of the outer ceiling 5 around the gap 6. Indirect lighting.
[0051]
When the fixture body 2 of the ceiling-mounted lighting fixture 4 to which the lower cover 3 is attached is viewed from below, a portion where the lower side (b) cannot be seen from the line A in FIG. However, since the gap 6 is provided between the non-contact part 7 and the ceiling 5, when viewing this part from the bottom, only the gap 6 is visible and the instrument body 2 is hardly visible. In the structure in which the instrument body 2 cannot be seen from below, the gap 6 between the non-contact portion 7 of the instrument body 2 and the ceiling 5 and the vicinity of the lower surface of the ceiling 5 on the outer periphery are bright as described above. Although it is shining, since there is a gap 6 between the non-contact portion 7 and the ceiling 5, the gap 6 shines and the shining portion appears to float in the air. That is, in the present invention, not only indirect illumination of the vicinity of the ceiling 5 around the ceiling-mounted lighting fixture 4 but also the gap 6 between the ceiling-mounted lighting fixture 4 and the ceiling 5 shines and this portion is A lighting effect that appears to float in the air can appear.
[0052]
Here, the upper step portion 7a of the non-contact portion 7 has a substantially oval shape in a plan view, and the lighting circuit 16 and the control unit 17 are attached to the upper step portion 7a. 16, the control unit 17 is attached so that the instrument body 2 is not seen from below in the gap 6 as much as possible. As a result, the gap 6 that shines can be made as wide as possible. By shining like this, the appearance of floating in the air can be more effectively revealed.
[0053]
Further, since the prism-shaped portion 9a having a prism shape is formed on the translucent upper cover 9, light transmitted through the translucent upper cover 9 can be directed outward and indirect illumination can be performed. The effect can be improved.
[0054]
By the way, in the present invention, the non-contact portion 7 has a translucent upper cover 9 that covers the daylighting opening 8 for transmitting light toward the gap 6 between the non-contact portion 7 and the ceiling 5 described above. On the other hand, since it is detachable, the indirect light color and the color scheme of the indirect light can be freely selected by replacing the translucent upper cover 9. In order to replace the translucent upper cover 9, the lower cover 3 is rotated in plan view to remove and remove the mounting projection 29 from the cover receiver 11, and then the knob of the locking member 15 is grasped with the fingertip. By moving outward, the locking member 15 is removed from the locking protrusion 14 of the wiring component 12, and the plug 22 of the hooking ceiling rosette provided in the instrument body 2 is removed from the outlet provided in the wiring component 12, and thus With the instrument body 2 removed, the screw 10 is removed to remove the doughnut-shaped translucent upper cover 9, and the color or the shape of the prism shape portion 9a is different, or the prism shape portion 9a is not provided For example, by replacing with another type of translucent upper cover 9 and attaching again with the screw 10, attaching the instrument body 2 to the wiring component 12, and attaching the lower cover 3 to the instrument body 2, Upward Te is capable of changing the light color and light distribution passing through the translucent upper cover 9.
[0055]
Thereby, after the ceiling-mounted lighting fixture 4 is attached, the illuminating atmosphere in the room can be changed by changing the indirect light color and the light distribution easily by the resident himself.
[0056]
FIG. 18 shows an example in which a translucent frame 41 is arranged around the lower cover 3. By arranging the translucent frame 41 around the lower cover 3 in this way, the upward light is transmitted to the ceiling. By reflecting on the five surfaces and illuminating the translucent frame 41 from above, it is possible to illuminate an image that is lighter than before.
[0057]
In the above embodiment, the ceiling-mounted lighting fixture 4 is an example of a circular shape in plan view, but may be square or rectangular in plan view. Here, the ceiling-mounted lighting fixture 4 having a circular shape in plan view has a diameter of 350 to 900 mm in plan view, or a square shape in plan view has a size of 350 × 350 mm (that is, 350 mm square) to 900 × 900 mm (that is, 900 mm square). Alternatively, the rectangular shape in plan view is (100 to 400 mm) × (500 to 1800 mm).
[0058]
As described above, the size of the ceiling-mounted lighting fixture 4 is φ350 to 900 mm in plan view, or 350 × 350 mm to 900 × 900 mm square in plan view, or (100 to 400 mm) × (500 to 1800 mm) in plan view. When the ceiling-mounted lighting fixture 4 with the lower cover 3 attached is viewed from below, most of the fixture body 2 is not visible, and between the non-contact portion 7 of the fixture body 2 and the ceiling 5 In order for the gap 6 of the device to shine and appear to be floating in the air, the close contact portion 13 at the center of the instrument body 2 in plan view is 50% or less of the area of the instrument body 2 and non- The size of the gap 6 between the contact portion 7 and the ceiling 5 may be 30 to 70 mm. As a result, an effective indirect illumination effect can be obtained by the light transmitted upward through the translucent upper cover 9, giving a light image as if the ceiling-mounted lighting device 4 is floating from the ceiling 5. The upper light distribution that has passed through the optical upper cover 9 can be structured so as not to create a locally high brightness portion on the ceiling 5.
[0059]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention is a ceiling-mounted lighting fixture in which a translucent lower cover is attached below a fixture body provided with a discharge lamp. The central part is a close contact part that is in close contact with the ceiling, and the periphery is a non-adhesive part that forms a gap with the ceiling without being in close contact with the ceiling. For allowing light from a discharge lamp provided in the instrument body to pass through the gap between the non-contact portion and the ceiling. A lighting opening is provided, and a translucent upper cover that covers the lighting opening is detachably disposed on the non-contact portion, so that the light from the discharge lamp passes through the translucent lower cover and moves downward. In addition, the light from the discharge lamp passes through the translucent upper cover into the gap between the non-adhered part of the fixture body and the ceiling in the ceiling-mounted lighting fixture. The gap is shining and indirect illumination is performed. In particular, the close contact portion of the central part of the instrument body 2 in plan view is 50% or less of the area of the instrument body 2, and the size of the illumination instrument 4 is φ350 to 900 mm in plan view. Or, in plan view, 350 × 350 mm to 900 × 350 mm, or in plan view (100 to 400 mm) × (500 to 1800 mm), and the gap 6 dimension between the non-contact portion 7 and the ceiling 5 is 30 to 70 mm. The light passing through the translucent upper cover gives an effective indirect lighting effect, giving a light image as if the ceiling-mounted luminaire is floating from the ceiling, and the translucent upper cover It is possible to make a structure in which the upper light distribution that has passed does not create a locally high-brightness portion on the ceiling. In addition, since the translucent upper cover is detachable, it is possible to easily change the illumination image by changing the indirect light color or the indirect light distribution by replacing the translucent upper cover. It can be done.
[0060]
Further, in the invention according to claim 2, in addition to the effect of the invention according to claim 1, the translucent upper cover is attached to the instrument body with a screw and the lower cover is supported on the instrument body. The screw cover that attaches the lower cover receiver to the instrument body and the screw tool that attaches the translucent cover to the instrument body and the screw tool that attaches the lower cover receiver to the instrument body are used as a common screw tool. The screw tool for detachably attaching the optical upper cover can also be used as the screw tool for attaching the lower cover receiver to the instrument body, so that the number of members can be reduced and the cost can be reduced.
[0061]
In addition, in the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the attachment portion of the lower cover and the translucent upper cover to the instrument body is a gap with the outside. Is a sealed structure of 1 mm or less, so that an insect-proof structure that does not allow insects to enter inside can be achieved.
[0062]
Further, in the invention according to claim 4, in addition to the effect of the invention according to any of claims 1 to 3, the ceiling is provided with a ceiling rosette outlet on the lower surface and provided on the outer peripheral portion. A wiring component having a locking projection is provided, a mounting opening that opens up and down is provided in the close contact portion of the central portion of the instrument body, and a spring in a direction protruding into the mounting opening on the inner surface of the mounting opening A retractable locking member with force applied is provided, the mounting opening is fitted into the wiring component, the locking member is locked to the locking projection, and the instrument body is mounted on the wiring component, and is provided on the wiring component. Since the plug of the hanging ceiling rosette provided in the instrument body is detachably connected to the socket outlet, the instrument body can be easily attached by locking without using screws etc. Ceiling The electrical connection between the wiring parts easy to, thereby in which replacement of the upper cover can be performed easily for changing the light distribution of indirect light color and indirect light.
[0063]
In the invention according to claim 5, in addition to the effects of the invention according to any one of claims 1 to 4, the discharge lamp has an annular shape, and the inside of the annular discharge lamp. Since the lighting circuit and the control unit for controlling the lighting circuit are arranged in the above, if the lighting circuit and the control unit are arranged above the annular discharge lamp, the thickness in the vertical direction becomes thick, and the upper part from the discharge lamp However, it is possible to prevent such a possibility that a part of the light traveling toward the light is blocked and the amount of the light transmitted through the translucent upper cover is reduced.
[0064]
In addition, in the invention described in claim 6, in addition to the effect of the invention described in claim 5, an integrated structure in which a control unit is arranged at the lower part of the lighting circuit is provided, and an LED that constitutes a nightlight is attached to the control unit. Therefore, the lighting circuit and the control unit are integrated into a single unit, and the entire unit is made compact, and even though the nightlight is attached to the control unit, the nightlight is an LED, making it even more compact and thin. Can be achieved.
[0065]
In addition, in the invention according to claim 7, in addition to the effect of the invention according to any one of claims 1 to 6, the discharge lamp has an annular shape, and the annular discharge lamp is provided in the fixture body. Since the discharge lamp support spring for supporting the lamp and the lamp socket are attached in such a manner that the position of the lamp lamp can be changed in the diameter direction of the fixture main body, it is possible to cope with different diameters of the annular discharge lamp.
[0066]
In addition, in the invention according to claim 8, in addition to the effect of the invention according to any one of claims 1 to 7, the outer peripheral shape of the close contact portion at the center portion of the instrument body is circular in a plan view. The non-contact part around the close contact part of the instrument body is formed in a stepped shape so that the outer peripheral side is down, and the outer peripheral shape of the upper step part, which is the inner peripheral side of the stepped non-contact part, is substantially oval in plan view The outer peripheral shape of the lower step, which is the outer peripheral side of the stepped non-contact portion, is circular in plan view, and the lighting circuit and control unit are mounted on the upper portion of the non-contact portion whose outer peripheral shape is substantially oval in plan view. The lighting opening is provided in the lower part of the non-adhering part, and the lighting opening is covered with a translucent upper cover. Of the gap between the close-contact part and the ceiling, make the gap between the parts visible from the exterior as wide as possible. Like appearance are floating in the air by glowing as mentioned can be effectively emerges.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a mounting state of a ceiling-mounted lighting device of the present invention.
FIG. 2 is a bottom view showing a state in which the lower cover is removed.
FIG. 3 is a plan view of the above-described ceiling-mounted lighting fixture.
FIG. 4 is a partially cutaway side view of the above.
FIG. 5 is a side view of the above.
FIG. 6 is an explanatory diagram showing the mounting order of the ceiling-mounted lighting fixture of the above.
FIG. 7 is a cross-sectional view of a mounting portion of the above translucent upper panel.
FIG. 8 is an enlarged sectional view of the main part of the above.
FIG. 9 is a cross-sectional view of a mounting portion of the lower cover of the above.
10A and 10B show the mounting of the lamp socket, wherein FIG. 10A is a bottom view, FIG. 10B is a side view, and FIG. 10C is a front view.
11A and 11B show a state in which the mounting position of the lamp socket is changed, wherein FIG. 11A is a bottom view, and FIG. 11B is a side view.
12A and 12B show a socket cover used in the above, in which FIG. 12A is a bottom view, and FIG. 12B is a perspective view of the upside down state.
13A and 13B show a lamp socket used in the above, wherein FIG. 13A is a bottom view, FIG. 13B is a front view, and FIG. 13C is a side view.
14A and 14B show a socket movable plate used in the above, wherein FIG. 14A is a bottom view, FIG. 14B is a side view, and FIG. 14C is a perspective view in an upside down state.
FIGS. 15A and 15B show attachment of the discharge lamp support spring, wherein FIG. 15A is a side sectional view, FIG. 15B is a front sectional view, and FIG. 15C is a bottom view;
FIG. 16 is a side sectional view showing an example in which the mounting position of the discharge lamp support spring is changed.
FIGS. 17A and 17B show the movable block used in the above, wherein FIG. 17A is a perspective view in an upside down state, FIG. 17B is a bottom view, FIG. 17C is a side view, and FIG. FIG.
FIG. 18 is a side view of another embodiment of the present invention.
FIG. 19 is a partially broken side view showing a conventional example.
FIG. 20 is an explanatory view showing the mounting order of the above.
[Explanation of symbols]
1 Discharge lamp
2 Instrument body
3 Lower cover
4 Ceiling mounted lighting fixtures
5 Ceiling
6 Clearance
7 Non-adhered part
7a Upper part
7b Lower part
8 Daylighting opening
9 Translucent top cover
10 Screws
11 Lower cover holder
12 Wiring parts
13 Adhering part
14 Locking protrusion
15 Locking member
16 lighting circuit
17 Control unit
19 LED
20 Discharge lamp support spring
21 Lamp socket
22 plug
23 Mounting opening

Claims

A ceiling-mounted lighting fixture with a translucent lower cover attached below the fixture body with a discharge lamp, with the central portion of the fixture body closely contacting the ceiling and the periphery closely contacting the ceiling The non-contact portion is formed so as to form a gap with the ceiling without any light, and the light from the discharge lamp provided in the fixture main body is placed between the non-contact portion and the ceiling above the discharge lamp of the non-contact portion. Provided with a daylighting opening for passing through the gap, and a transparent upper cover for covering the daylighting opening on the non-contact portion is detachably disposed, and in the plan view, the contact portion at the center of the instrument body Is 50% or less of the area of the fixture body, and the lighting fixture size is φ350 to 900 mm in plan view, or 350 × 350 mm to 900 × 350 mm in plan view, or (100 to 400 mm) × (500 to 1800 mm) in plan view , Clearance between the non-adhered part and the ceiling Headlining type luminaire law characterized in that it is a 30 to 70 mm.

A translucent upper cover is attached to the instrument body with a screw tool, a lower cover holder for supporting the lower cover is attached to the instrument body with a screw tool, and the translucent cover is attached to the instrument body. 2. The ceiling-mounted lighting device according to claim 1, wherein the screw member for attaching the lower cover holder is also used as a common screw member.

The ceiling-mounted illuminating device according to claim 1 or 2, wherein the attachment portion of the lower cover and the translucent upper cover to the device main body has a sealed structure with a clearance of 1 mm or less from the outside.

Provide a wiring component with a ceiling rosette outlet on the lower surface of the ceiling and a locking projection on the outer periphery, and an attachment opening that opens up and down at the close contact portion at the center of the instrument body. A retractable locking member provided with spring force in a direction protruding into the mounting opening is provided on the inner surface of the mounting opening, and the mounting opening is fitted into the wiring part and the locking member is used as the locking protrusion. 4. A device according to claim 1, wherein the device body is fixedly attached to the wiring component, and a plug of a hooking ceiling rosette provided in the device body is detachably connected to an outlet provided in the wiring component. The ceiling-mounted lighting device according to any one of the above.

The discharge lamp has an annular shape, and a lighting circuit and a control unit for controlling the lighting circuit are arranged inside the annular discharge lamp. The ceiling-mounted lighting fixture as described.

6. The ceiling-mounted illuminator according to claim 5, wherein the lighting unit has an integral structure in which a control unit is disposed below the lighting circuit, and the control unit is provided with an LED that constitutes a nightlight.

The discharge lamp has an annular shape, and a discharge lamp support spring and a lamp socket for supporting the annular discharge lamp on the instrument body are mounted so as to be positionable in the diameter direction of the instrument body. The ceiling-mounted lighting device according to any one of claims 1 to 6.

The outer peripheral shape of the contact part at the center of the instrument body is circular in plan view, and the non-contact part around the contact part of the instrument body is formed in a step shape so that the outer peripheral side is down. The outer peripheral shape of the upper step, which is the inner peripheral side, is an oval shape in plan view, the outer shape of the lower step, which is the outer peripheral side of the stepped non-contact portion, is a circular shape in plan view, and the outer shape is an approximately oval shape in plan view A lighting circuit and a control unit are attached to the non-contact portion of the upper portion, and a lighting opening is provided in the lower portion of the non-contact portion, and the lighting opening is covered with a translucent upper cover. The ceiling-mounted lighting fixture according to any one of claims 1 to 7 .