JP3915363B2

JP3915363B2 - lighting equipment

Info

Publication number: JP3915363B2
Application number: JP2000023380A
Authority: JP
Inventors: 光広岡本
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2000-01-31
Filing date: 2000-01-31
Publication date: 2007-05-16
Anticipated expiration: 2020-01-31
Also published as: JP2001216830A

Description

【０００１】
【発明の属する技術分野】
本発明は、器具本体と器具本体を覆うカバーとからなる照明器具に関するものである。
【０００２】
【従来の技術】
従来の照明器具として、特開平１０−１７７８０８号に開示されるものがあった。この従来の照明器具は、カバーを器具本体に取り付ける際に、カバーを回転させてカバーに設けられた突出部を器具本体の受金部にて支持させるものであり、このとき器具本体の受金部に取り付けられた弾性板ばねに突出部が接触して音が発生し、器具本体にカバーが取り付けられたことがユーザに分かるようになっている。
【０００３】
【発明が解決しようとする課題】
しかし、本従来例では、器具本体にカバーが取り付けられたことがユーザに分かるようにするために、器具本体の受金部に別部材である弾性板ばねを取り付ける必要があり、取付工数や部品点数の増加となり、コストアップにつながる。
【０００４】
本発明は上記事由に鑑みて為されたものであり、その目的はコストを抑えるとともに、カバーを器具本体へ取り付ける者が係合段階を知ることができる照明器具を提供することにある。
【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、請求項１の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記カバーは前記器具本体の一面に接触する接触面を有し、前記クリック感発生手段は、前記接触面又は前記器具本体の前記一面のうち一方に複数形成された凸部と、他方に形成され前記カバーの回転により前記各凸部を乗り越える複数の凸部とを有し、前記接触面又は前記器具本体の前記一面のうち一方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が同一であり、他方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が異なることを特徴としており、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体に取り付ける者が、凸部が凸部を乗り越えるときの感覚より、カバーの突出部が器具本体の係合部に係合したことを確実に知ることができ、コストを抑えることができる。また、カバーを器具本体へ取り付ける者が、カバーの突出部が器具本体の係合部へ係合する係合完了前と係合完了時を知ることができるため、係合段階を知ることができる。
【００１１】
また、請求項２の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記クリック感発生手段は、前記接触面又は前記器具本体の前記一面のうち一方に複数形成された凸部と、他方に形成され前記カバーの回転により前記各凸部が嵌合する複数の凹部とを有し、前記接触面又は前記器具本体の前記一面のうち一方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が同一であり、他方に形成された各凹部と対応する前記突出部又は前記係合部との間隔が異なることを特徴としており、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体に取り付ける者が、凸部が凹部に嵌合するときの感覚より、カバーの突出部が器具本体の係合部に係合したことを確実に知ることができ、コストを抑えることができる。また、カバーを器具本体へ取り付ける者が、カバーの突出部が器具本体の係合部へ係合する係合完了前と係合完了時を知ることができるため、係合段階を知ることができる。
【００１２】
また、請求項３の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記クリック感発生手段は、前記接触面又は前記器具本体の前記一面のうち一方に複数形成された凸部と、他方に形成され前記カバーの回転により前記各凸部が嵌合する複数の凹部とを有し、前記接触面又は前記器具本体の前記一面のうち一方に形成された各凹部と対応する前記突出部又は前記係合部との間隔が同一であり、他方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が異なることを特徴としており、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体に取り付ける者が、凸部が凹部に嵌合するときの感覚より、カバーの突出部が器具本体の係合部に係合したことを確実に知ることができ、コストを抑えることができる。また、カバーを器具本体へ取り付ける者が、カバーの突出部が器具本体の係合部へ係合する係合完了前と係合完了時を知ることができるため、係合段階を知ることができる。
【００１３】
また、請求項４の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記係合部は前記突出部の係合完了時に前記突出部を支持する支持面を有し、前記クリック感発生手段として、前記突出部が乗り越える凸部が複数の係合部の支持面上にそれぞれ形成され、各凸部はそれと対応する突出部に対する位置関係が異なっていることを特徴としており、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体へ取り付ける者が、突出部が凸部を乗り越える感覚より、カバーの突出部が器具本体の係合部に係合したことを知ることができ、コストを抑えることができる。また、突出部が係合部に係合するときに各突出部が各凸部を乗り越えるタイミングに差が生じて、カバーの取り付け者は係合段階を知ることができる。
【００１４】
また、請求項５の発明は、請求項４記載の発明において、前記支持面上に形成された凸部は、前記カバーを回転させて前記係合部に前記突出部を係合させるときの前記突出部の進行方向に対向する斜面の方が他方の斜面より緩やかである山形形状となっていることを特徴としており、軽い力で突出部を係合部に係合させることができ、反対にその係合は外れにくくなる。
【００１５】
また、請求項６の発明は、請求項４記載の発明において、前記支持面上に形成された凸部は球状であることを特徴としており、突出部の形状にばらつきがあり係合部に係合させるときの軌道がずれるようなことがあっても、突出部が一定の力で凸部を乗り越えるようにでき、カバーの取り付け者が確実に係合完了を知ることができる。
【００１６】
また、請求項７の発明は、請求項４から請求項６のいずれかに記載の発明において、前記支持面は、周囲に孔部が形成されて一端が固定された舌片を有し、前記舌片上に前記凸部が形成されたことを特徴としており、凸部が撓むことが可能になり、カバーの突出部の厚みにばらつきがあっても、突出部が凸部を乗り越えるときの感覚を一定とすることができ、カバーの取り付け者が係合完了を確実に知ることができる。
【００１８】
【発明の実施の形態】
（実施形態１）
本実施形態の照明器具は、図２、図３に示すように、合成樹脂製の円板状の器具本体１と、天井面Ｘに配設されている引掛シーリングあるいは引掛ローゼットからなる引掛コンセント２に、上面に設けた一対の引掛栓刃を引掛係止して電気的、機械的に結合される取付アダプタ３と、器具本体１の中央部の窓孔に取り付けられ、上面開口より引掛コンセント２及び取付アダプタ３を挿入して、取付アダプタ３の外周部に常時ばね付勢により先部を突出させた係合突起４を内周面の係合段部に係合させて取付アダプタ３に器具本体１を着脱自在に支持させる筒状収納部５と、インバータ式の点灯回路からなる電子安定器部及び点灯や調光を制御する回路の電子部品、プルスイッチ６、更に電子安定器により点灯される例えば３２Ｗ、４０Ｗの２種類の環状蛍光ランプＬ１、Ｌ２を接続装着するソケット台８、常夜灯用ソケット９などを実装し、上記筒状収納部５を囲むように器具本体１の下面に配設されるプリント基板１０と、外形が略円錐台形状で、器具本体１の下面側に配設したプリント基板１０を含む充電部を覆うように大径側の開口部周縁の外向き鍔部１２ａを器具本体１の下面に当接し、螺子及びかしめにより器具本体１下面側に同心円状に配置固定される板金製の反射板１２と、反射板１２に形成された開口窓１３ａより下方に露出した上記ソケット台８及び反射板１２の下向き傾斜面に取り付けられたランプ保持ばね１４により保持装着される蛍光ランプＬ１，Ｌ２、反射板１２に形成された開口窓１３ｂより露出した常夜灯ソケット９を覆うように器具本体１の下面側に被着される乳白色の透過拡散性の例えばアクリル樹脂製のカバー（グローブ）１５と、線状のばね材をＶ状に折り曲げ、上記プルスイッチ６の操作杆に結合された引き紐１６を挿通する環部１７ａを両脚部の基端に設け、両脚部の先端が器具本体１の周端部に揺動自在に取り付けられるＶ状レバー１７とから構成される。
【００１９】
器具本体１は下面側にはプリント基板１０を支えるリブや螺子止めのためのリブなどを形成するとともに、上記反射板１２の外向き鍔部１２ａが面接する箇所には円弧状の窓孔１８をあけ、放熱効果を高めている。
【００２０】
反射板１２の中央部には器具本体１に取り付けられた筒状収納部５の下端開口が臨む丸孔２０が開口しており、筒状収納部５に収納される取付アダプタ３の下面部が上記丸孔２０より露出し、取付アダプタ３の下面に設けた電源供給用接続部２１に対してプリント基板１０の回路に一端が接続された電源線２２の他端のコネクタ２２ａを接続することができるようになっている。
【００２１】
また、取付アダプタ３の下面には上記係止突起４を取付アダプタ３内にばね付勢に抗して引き込ませて、筒状収納部５の内周面に設けた係止段部から離脱させるための操作を行う操作レバー１１を露出させており、カバー１５を取り外した状態で取付アダプタ３から器具本体１を取り外すことができるようになっている。
【００２２】
カバー１５は、例えばアクリル樹脂により成形された扁平なドーム体からなり、そのドーム体の上面中央部に円形の開口部１５ａを形成し、この開口部１５ａの周縁部には、器具本体１下面にカバー１５を固定保持するための平面体である突出部（張出部）１５ｄを等間隔で３カ所内方向に突出形成してある。また、開口部１５ａの上面にはカバー１５を器具本体１に固定保持したときに、器具本体１の下面１ａに接触する接触面１５ｂが設けられている。
【００２３】
また、器具本体１の外向き鍔部１２ａの外側に位置する周端部近辺の下面には、カバー１５の突出部１５ｄを係合して取り付けるための一体形成された係合部１９Ａ〜１９Ｃを突出部１５ｄと対応する位置に３カ所形成してある。
【００２４】
本実施形態の照明器具を天井に取り付けるに当たっては、予めプリント基板１０、筒状収納部５を取り付けるとともに、反射板１２を取り付け、反射板１２を介して露出したソケット台８に蛍光ランプＬ１，Ｌ２を接続し、且つソケット台８に付加している保持ばね及び反射板１２に設けたランプ保持ばね１４により保持させ、また常夜灯用ソケット９に豆球を装着した状態の器具本体１を準備しておく。蛍光ランプＬ１，Ｌ２、豆球の装着はカバー１５を取り付ける直前に行ってもよい。
【００２５】
そして取り付け施工の際、まず天井に取り付けられている引掛シーリングや、引掛ローゼットからなる引掛コンセント２に取付アダプタ３の引掛栓刃を引掛接続して引掛コンセント２の下面側に取り付ける。
【００２６】
次に、器具本体１を持ち上げながら天井方向へ移動させ、器具本体１の中央部の窓孔に臨んだ筒状収納部５の上端開口より、引掛コンセント２から垂下した取付アダプタ３を筒状収納部５内に挿入する。この挿入により取付アダプタ３の外周部より突出した係合突起４が筒状収納部５の内周面に設けた係合段部の上側傾斜面により押されて取付アダプタ３内に投入しながら係合段部を乗り越え、再びばね付勢により突出することにより、係合段部の下向き面に係合し、この係合により筒状収納部５を介して器具本体１側を支持する。この状態で取付アダプタ３の下面に設けた電源供給用接続部２１に対してプリント基板１０に接続し、外部に導出してある電源線２２の先端のコネクタ２２ａを接続する。
【００２７】
このように、器具本体１側の取り付けが終了した後、カバー１５を取り付ける。ここで、器具本体１とカバー１５の要部の詳細を説明する。まず、図１（ａ）に器具本体１の平面図を、図１（ｂ）にカバー１５の平面図を示す。図１（ａ）では器具本体１は反射板１２などを取り付けた状態を示し、図１（ａ）（ｂ）はともに下面側から見た状態を示している。
【００２８】
図１（ａ）に示すように、器具本体１の周端部近辺の３カ所に等間隔で係合部１９Ａ，１９Ｂ，１９Ｃが設けられている。図５は係合部１９Ａの構造を示している。なお、係合部１９Ｂ，１９Ｃは同様の構成をしている。器具本体１を天井に取り付けた際、図５において上側が地面側に位置し、下側が天井側に位置する。
【００２９】
図１、図５において、係合部１９Ａは、外周側の側面１９ｓ（図５では手前側）と、カバー１５を回転させたとき突出部１５ｄが対向する端面１９ｅが開口するとともに、内部には前記端面１９ｅ側に位置し、接触面１５ｂから突出部１５ｄの器具本体１と反対面までの高さより十分大きい高さを有する前室１９ｆと、この前室１９ｆに連通し、突出部１５ｄの厚さに略等しい高さを有する後室１９ｇとを備えている。
【００３０】
図１（ａ）に示すように、器具本体１の下面１ａ上には係合部１９Ａの円周方向近傍に例えば球状（または半球状）の凸部（ダボ）３０ａが一体形成されており、また図１（ｂ）に示すようにカバー１５の器具本体１の下面１ａと接触する接触面１５ｂには、上記凸部３０ａと対応する位置に、カバー１５の内方向に突出する凸部３１ａが一体形成されている。
【００３１】
次に、カバー１５を器具本体１に取り付けるときの状態を図４に模式的に示し、図１、図４、図５を用いて取り付け方法を説明する。まず、カバー１５を下方から持ち上げて、その接触面１５ｂを反射板１２の周端より外側に露出した器具本体１の下面１ａに当接させ、この状態でＰ方向にカバー１５を回転させる。この回転によりカバー１５の各突出部１５ｄが、器具本体１の係合部１９Ａ，１９Ｂ，１９Ｃに入って係合することになる。係合部１９Ａについて説明すると、上記カバー１５の回転により突出部１５ｄは、係合部１９Ａの端面１９ｅの開口及び側面１９ｓの開口を通して前室１９ｆ内にまず入り、さらなる回転により後室１９ｇ内に入って、後室の奥壁１９ｈに当たり、その位置で後室１９ｇの底面である支持面１９ｋに支えられるように係合することになる。
【００３２】
このカバー１５の回転により、カバー１５に設けられた凸部３１ａが器具本体１の下面１ａに設けられた凸部３０ａに接触し乗り越える。ここで、上記係合部１９Ａと突出部１５ｄの係合完了と同時に、凸部３１が凸部３０ａを乗り越えるように各凸部３０ａ，３１ａの位置関係を設定している。そうすることで、係合完了時に凸部３１ａが凸部３０ａを乗り越えたときの感覚（クリック感）が、カバー１５の取り付け者に伝わり、取り付け者はその感覚より係合完了状態を知ることができる。すなわち、凸部３０ａ，３１ａは、カバー１５の突出部１５ｄと器具本体１の係合部１９Ａ，１９Ｂ，１９Ｃの係合完了時にクリック感を付与するクリック感発生手段を構成する。
【００３３】
この係合によりカバー１５は器具本体１の下面１ａ側に固定保持され、器具本体１の下面側に取り付けられた反射板１２、蛍光ランプＬ１，Ｌ２、豆球を覆うことになる。このとき、カバー１５の接触面１５ｂは器具本体１の下面に当接することになる。
【００３４】
次に、他の構成例を図６（ａ）、（ｂ）に示す。図１では、器具本体１の係合部１９Ａ近傍にのみ凸部３０ａが形成されていたのに対して、図６では、他の係合部１９Ｂ，１９Ｃの近傍にも新たに凸部３０ｂ，３０ｃが一体形成されている。そして、各係合部１９Ａ、１９Ｂ、１９Ｃと各凸部３０ａ，３０ｂ、３０ｃの各間隔Ａ１，Ａ２，Ａ３は、Ａ１＜Ａ２＜Ａ３となるように凸部３０ａ，３０ｂ、３０ｃが形成されている。
【００３５】
また、図６（ｂ）に示すように、カバー１５の接触面１５ｂより内方向に向かって、各凸部３０ａ，３０ｂ，３０ｃと対応する位置に凸部３１ａ，３１ｂ，３１ｃが一体形成されている。すなわち、凸部３１ａ，３１ｂ，３１ｃは各突出部１５ｄの近傍に形成されている。ここで、各凸部３１ａ，３１ｂ，３１ｃと各突出部１５ｄの各間隔Ｂ１，Ｂ２，Ｂ３は同一間隔である。
【００３６】
また、各係合部１９Ａ，１９Ｂ，１９Ｃと各突出部１５ｄの係合完了時に凸部３１ａが係合部１９Ａ近傍の凸部３０ａを乗り越えるように設定している。各凸部３０ａ，３０ｂ，３０ｃおよび、各凸部３１ａ，３１ｂ，３１ｃの位置関係は上述したとおりのため、カバー１５をＰ方向に回転したとき、各凸部３１ａ，３１ｂ，３１ｃが各凸部３０ａ，３０ｂ，３０ｃをそれぞれ乗り越える順番は、凸部３１ｃ，３１ｂ，３１ａの順番となる。すなわち、凸部３１ｂ，３１ｃは上記係合完了の前に凸部３０ｂ，３０ｃを乗り越え、係合完了時に凸部３１ａは凸部３０ａを乗り越えることになる。
【００３７】
このように構成することで、カバー１５を器具本体１に取り付ける者は、上述した乗り越える感覚（クリック感）を順番に感じることより、カバー１５の突出部１５ｄが器具本体１の各係合部１９Ａ，１９Ｂ，１９Ｃに係合される係合段階を知ることができる。
【００３８】
このように係合段階を知ることのできる他の構成例を図７に示す。本構成例では、図７（ａ）に示すように、器具本体１の各係合部１９Ａ，１９Ｂ，１９Ｃと各凸部３０ａ，３０ｂ、３０ｃの各間隔Ａ１，Ａ２，Ａ３は同一であるのに対して、図７（ｂ）に示すように、カバー１５の各突出部１５と各凸部３１ａ，３１ｂ，３１ｃの各間隔Ｂ１，Ｂ２，Ｂ３はＢ１＞Ｂ２＞Ｂ３の関係を有している。本構成例においても、図６の場合と同様、Ｐ方向にカバー１５を回転させると、各凸部３１ｃ，３１ｂ，３１ａの順番で、凸部３０ｃ，３０ｂ，３０ａを乗り越えて係合完了するため、取り付け者は係合段階を知ることができる。
【００３９】
さらに他の構成例を図８に示す。図１では、カバー１５の接触面１５ｂより内方向に各凸部３１ａ、３１ｂ、３１ｃが突出形成されているのに対して、図８では接触面１５ｂより器具本体１側に突出し、カバー１５の径方向に長さを有する凸部（リブ）３２ａ，３２ｂ，３２ｃ（図９の凸部３２と同形状）が接触面１５ｂ上に一体的に突出形成されている。ここで、各凸部３２ａ，３２ｂ，３２ｃの各突出部１５ｄからの各間隔Ｂ１，Ｂ２，Ｂ３は同一となっている。
【００４０】
一方、器具本体１の各係合部１９Ａ，１９Ｂ，１９Ｃの近傍に設けられる各凸部３０ａ，３０ｂ，３０ｃは、上記各凸部３２ａ，３２ｂ，３２ｃと対応する位置に形成されており、すなわち図１の場合に比べて器具本体１の外周側に形成されている。この各凸部３０ａ，３０ｂ，３０ｃと各係合部１９Ａ，１９Ｂ，１９Ｃの各間隔Ａ１，Ａ２，Ａ３は、Ａ１＜Ａ２＜Ａ３となっている。
【００４１】
本構成例でも、カバー１５をＰ方向に回転させると、各凸部３２ｃ，３２ｂ，３２ａがこの順序で各凸部３０ｃ，３０ｂ，３０ａを乗り越え、最後に凸部３２ａが凸部３０ａを乗り越えるときに、各突出部１５ｄが各係合部１９Ａ，１９Ｂ，１９Ｃに係合するようになり、凸部が凸部を乗り越える感覚を取り付け者が順に感じることで係合完了を知ることができる。
【００４２】
なお、この係合完了時に器具本体１の下面１ａとカバー１５の接触面１５ｂが隙間なく接触するように、係合完了時に器具本体１の各凸部３０ａ，３０ｂ，３０ｃが嵌合する凹部をカバー１５の接触面１５ｂに設けるとともに、カバー１５の各凸部３２ａ，３２ｂ，３２ｃが嵌合する凹部を器具本体１の下面１ａに設けるのが望ましい。
【００４３】
また、上記した各間隔Ｂ１，Ｂ２，Ｂ３をＢ１＞Ｂ２＞Ｂ３のようにし、各間隔Ａ１，Ａ２，Ａ３をＡ１＝Ａ２＝Ａ３のように設定しても、図８と同様の効果が得られる。
【００４４】
ここで、またさらに他の構成例を図１０に示す。図１０（ａ）に示す器具本体１は図８（ａ）と同様の構成をしているが、カバー１５は図１０（ｂ）に示すように、接触面１５ｂには図８（ｂ）の各凸部３２ａ，３２ｂ，３２ｃが形成されている位置に器具本体１の上記各凸部３０ａ，３０ｂ，３０ｃが嵌合する凹部３３ａ，３３ｂ，３３ｃが形成されている。本構成例では、カバー１５をＰ方向に回転させると、各凹部３３ｃ，３３ｂ，３３ａにこの順序で各凸部３０ｃ，３０ｂ，３０ａが嵌合していき、最後に凹部３３ａに凸部３０ａが嵌合するときに、各突出部１５ｄが各係合部１９Ａ，１９Ｂ，１９Ｃに係合するようになり、凹部に凸部が嵌合する感覚にて取り付け者が係合段階を知ることができるとともに、係合完了を知ることができる。
【００４５】
なお、この係合完了時に器具本体１の下面１ａとカバー１５の接触面１５ｂが隙間なく接触するように、係合完了時に器具本体１の各凸部３０ａ，３０ｂ，３０ｃが嵌合する凹部を上記各凹部３３ａ，３３ｂ，３３ｃとは別にカバー１５の接触面１５ｂに設けるのが望ましい。
【００４６】
また、上記各間隔Ｂ１，Ｂ２，Ｂ３をＢ１＞Ｂ２＞Ｂ３のようにし、各間隔Ａ１，Ａ２，Ａ３をＡ１＝Ａ２＝Ａ３のように設定しても、図１０の場合と同様の効果が得られる。
【００４７】
次に、係合部１９Ａ，１９Ｂ，１９Ｃの他の構成例を示す。図１１は、係合部の他の構造を示す斜視図であり、図中上側が地面側に位置し、下側が天井側に位置する点は図５と同様である。図１１の係合部３９において、図５に示す係合部１９Ａと異なる点は、カバー１５の突出部１５ｄを支持する支持面１９ｋ上に突出部１５ｄ方向に凸部４０が突出形成されている点である。この凸部４０は器具本体１の径方向に長さを有し、開口した側面での断面形状が図１２に示すように山形形状（三角リブ）となっている。そして、係合部３９にカバー１５の突出部１５ｄを係合させるときの突出部１５ｄの進行方向Ｑに対向する斜面４０ａの方が他方の斜面４０ｂよりも緩やかになっている。
【００４８】
この係合部３９にカバー１５の突出部１５ｄが係合されるときの作用について説明する。まず、カバー１５を回転させると、係合部３９の端面１９ｅよりＱ方向にカバー１５の突出部１５ｄが進入し、前室１９ｆ内にまず入り、さらなる回転により後室１９ｇ内に入る。
【００４９】
そして、突出部１５ｄは凸部４０の斜面４０ａに接触しその斜面４０ａに沿って進み、山形形状の頂点を超えて逆側の斜面４０ｂに沿って下降し、突出部１５ｄの平面が支持面１９ｋに載置され係合部３９に支持される。このとき、突出部１５ｄは、後室１９ｇの奥壁１９ｈと凸部４０の間に係合する。すなわち、突出部１５ｄと係合部３９の係合完了時に突出部１５ｄが係合部３９の凸部４０を乗り越える。
【００５０】
これにより、カバー１５を器具本体１に取り付ける者は、突出部１５ｄが凸部４０を乗り越えたときの感覚（クリック感）により、突出部１５ｄと係合部３９の係合完了を知ることができる。すなわち、凸部４０はクリック感発生手段に対応する。また、突出部１５ｄの進行方向Ｑに対向する斜面４０ａの方が他方の斜面４０ｂより緩やかであるため、軽い力で突出部１５ｄを係合部３９に係合させることができ、反対にその係合は外れにくくなる。
【００５１】
次に、この係合部のさらに他の構成例を図１３に示す。図１３において、図１１と異なる点は、係合部３９の支持面１９ｋには、周囲３辺に孔部４１が形成されて一端４２が固定された舌片４３が設けられ、図１１に示す凸部４０がこの舌片４３の他端部に形成されている点である。
【００５２】
このように構成することで凸部４０が支持面１９ｋと垂直方向に撓むことが可能になり、カバー１５の突出部１５ｄの厚みにばらつきがあっても、突出部１５ｄが凸部４０を乗り越えるときの感覚を一定とすることができ、カバー１５を取り付ける者が突出部１５ｄの係合部３９への係合完了を確実に知ることができる。
【００５３】
なお、図１１、図１３では、凸部４０を器具本体１の径方向に長さを有し、断面が山形形状としたが球状や半球状としてもよい。そうすることで、突出部１５ｄの形状にばらつきがあり係合部３９に係合させるときの軌道がずれるようなことがあっても、突出部１５ｄが一定の力で凸部４０を乗り越えるようにでき、確実に係合完了を知ることができる。
【００５４】
器具本体１の各係合部に上記凸部を形成した例を図１４に示す。図１４（ｂ）に示すように、カバー１５に突出部１５ｄが等間隔に３つ形成されている。一方、図１４（ａ）に示すように、各係合部３９Ａ，３９Ｂ，３９Ｃも器具本体１に等間隔で３カ所に形成されているが、各係合部３９Ａ，３９Ｂ，３９Ｃに形成された凸部４０ａ，４０ｂ，４０ｃは等間隔に形成されておらず、各凸部４０ｃ，４０ｂ，４０ａと奥壁１９ｈの距離は、４０ｃ＜４０ｂ＜４０ａとなる位置に形成されている。
【００５５】
すなわち、各凸部４０ａ，４０ｂ，４０ｃはそれと対応する突出部１５ｄに対する位置関係が異なっており、カバー１５の回転方向をＰ方向とすると、各突出部１５ｄは凸部４０ａ，４０ｂ，４０ｃの順番で乗り越えることになる。このとき、対応する突出部１５ｄが凸部４０ｃを乗り越えたときに、各突出部１５ｄが各係合部３９Ａ，３９Ｂ，３９Ｃに係合完了するようにしている。こうすることにより、カバー１５の取り付け者は係合段階を知ることができる。
【００５６】
【発明の効果】
上記したように、請求項１の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記カバーは前記器具本体の一面に接触する接触面を有し、前記クリック感発生手段は、前記接触面又は前記器具本体の前記一面のうち一方に複数形成された凸部と、他方に形成され前記カバーの回転により前記各凸部が乗り越える複数の凸部とを有し、前記接触面又は前記器具本体の前記一面のうち一方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が同一であり、他方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が異なるため、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体に取り付ける者が、凸部が凸部を乗り越えるときの感覚より、カバーの突出部が器具本体の係合部に係合したことを確実に知ることができ、コストを抑えることができる。また、カバーを器具本体へ取り付ける者が、カバーの突出部が器具本体の係合部へ係合する係合完了前と係合完了時を知ることができるため、係合段階を知ることができる。
【００６２】
また、請求項２の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記クリック感発生手段は、前記接触面又は前記器具本体の前記一面のうち一方に複数形成された凸部と、他方に形成され前記カバーの回転により前記各凸部が嵌合する複数の凹部とを有し、前記接触面又は前記器具本体の前記一面のうち一方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が同一であり、他方に形成された各凹部と対応する前記突出部又は前記係合部との間隔が異なるため、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体に取り付ける者が、凸部が凹部に嵌合するときの感覚より、カバーの突出部が器具本体の係合部に係合したことを確実に知ることができ、コストを抑えることができる。また、カバーを器具本体へ取り付ける者が、カバーの突出部が器具本体の係合部へ係合する係合完了前と係合完了時を知ることができるため、係合段階を知ることができる。
【００６３】
また、請求項３の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記クリック感発生手段は、前記接触面又は前記器具本体の前記一面のうち一方に複数形成された凸部と、他方に形成され前記カバーの回転により前記各凸部が嵌合する複数の凹部とを有し、前記接触面又は前記器具本体の前記一面のうち一方に形成された各凹部と対応する前記突出部又は前記係合部との間隔が同一であり、他方に形成された各凸部と対応する前記突出部又は前記係合部との間隔が異なるため、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体に取り付ける者が、凸部が凹部に嵌合するときの感覚より、カバーの突出部が器具本体の係合部に係合したことを確実に知ることができ、コストを抑えることができる。また、カバーを器具本体へ取り付ける者が、カバーの突出部が器具本体の係合部へ係合する係合完了前と係合完了時を知ることができるため、係合段階を知ることができる。
【００６４】
また、請求項４の発明は、ランプを保持する器具本体と、前記器具本体に対向する開口部を有しランプを覆うようにして前記器具本体に取り付けられる透光性のカバーとを備え、前記カバーの前記開口部周縁に形成された複数の突出部が、前記カバーの回転により前記器具本体の前記突出部と対応する位置に形成された係合部に係合して、前記カバーが前記器具本体に固定保持されるよう構成され、前記器具本体又は前記カバーの少なくとも一方に、前記突出部と前記係合部の係合完了時にクリック感を付与するクリック感発生手段を設け、前記係合部は前記突出部の係合完了時に前記突出部を支持する支持面を有し、前記クリック感発生手段として、前記突出部が乗り越える凸部が複数の係合部の支持面上にそれぞれ形成され、各凸部はそれと対応する突出部に対する位置関係が異なっているため、器具本体に新たな部材を追加して取り付けることなく、カバーを器具本体へ取り付ける者が、突出部が凸部を乗り越える感覚より、カバーの突出部が器具本体の係合部に係合したことを知ることができ、コストを抑えることができる。また、突出部が係合部に係合するときに各突出部が各凸部を乗り越えるタイミングに差が生じて、カバーの取り付け者は係合段階を知ることができる。
【００６５】
また、請求項５の発明は、請求項４記載の発明において、前記支持面上に形成された凸部は、前記カバーを回転させて前記係合部に前記突出部を係合させるときの前記突出部の進行方向に対向する斜面の方が他方の斜面より緩やかである山形形状となっているため、軽い力で突出部を係合部に係合させることができ、反対にその係合は外れにくくなる。
【００６６】
また、請求項６の発明は、請求項４記載の発明において、前記支持面上に形成された凸部は球状であるため、突出部の形状にばらつきがあり係合部に係合させるときの軌道がずれるようなことがあっても、突出部が一定の力で凸部を乗り越えるようにでき、カバーの取り付け者が確実に係合完了を知ることができる。
【００６８】
また、請求項７の発明は、請求項４から請求項６のいずれかに記載の発明において、前記支持面は、周囲に孔部が形成されて一端が固定された舌片を有し、前記舌片上に前記凸部が形成されたため、凸部が撓むことが可能になり、カバーの突出部の厚みにばらつきがあっても、突出部が凸部を乗り越えるときの感覚を一定とすることができ、カバーの取り付け者が係合完了を確実に知ることができる。
【図面の簡単な説明】
【図１】本発明の実施形態に対応する照明器具の各部の構造を示す図であって、（ａ）（ｂ）はいずれも平面図である。
【図２】同上の照明器具の構造を示す分解斜視図である。
【図３】同上の照明器具の取り付けるときの状態を示す分解斜視図である。
【図４】同上の照明器具のカバーの取り付けるときの状態を示す斜視図である。
【図５】同上の照明器具の係合部の構造を示す斜視図である。
【図６】同上の照明器具における凸部を複数形成した構造を示す図であって、（ａ）（ｂ）はいずれも平面図である。
【図７】同上の照明器具における凸部を複数形成した場合の他の構造を示す図であて、（ａ）（ｂ）はいずれも平面図である。
【図８】同上の照明器具における凸部を複数形成した場合のさらに他の構造を示す図であて、（ａ）（ｂ）はいずれも平面図である。
【図９】同上の照明器具のカバーにおける他の構造を示す斜視図である。
【図１０】同上の照明器具における凸部を複数形成した場合のまたさらに他の構造を示す図であて、（ａ）（ｂ）はいずれも平面図である。
【図１１】同上の照明器具における他の係合部の構造を示す斜視図である。
【図１２】同上の照明器具における他の係合部の要部の構造を示す側面図である。
【図１３】同上の照明器具におけるさらに他の係合部の構造を示す斜視図である。
【図１４】同上の照明器具における係合部に凸部を設けたときの各部の構造を示す図であって、（ａ）（ｂ）はいずれも平面図である。
【符号の説明】
１器具本体
１ａ下面
１２反射板
１５カバー
１５ｂ接触面
１５ｄ突出部
１９Ａ，１９Ｂ，１９Ｃ係合部
３０ａ凸部
３１ａ凸部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting fixture including a fixture body and a cover that covers the fixture body.
[0002]
[Prior art]
As a conventional lighting fixture, there was one disclosed in JP-A-10-177808. In this conventional lighting fixture, when the cover is attached to the fixture main body, the cover is rotated and the protruding portion provided on the cover is supported by the receiving portion of the fixture main body. The projecting part comes into contact with the elastic leaf spring attached to the part and a sound is generated, so that the user can know that the cover is attached to the instrument body.
[0003]
[Problems to be solved by the invention]
However, in this conventional example, in order for the user to know that the cover is attached to the instrument body, it is necessary to attach an elastic leaf spring as a separate member to the receiving part of the instrument body. The number of points will increase, leading to increased costs.
[0004]
  The present invention has been made in view of the above reasons, and its purpose is to reduce costs.And the person attaching the cover to the instrument body can know the engagement stage.It is to provide a luminaire.
[0005]
[Means for Solving the Problems]
  In order to solve the above-mentioned problem, the invention of claim 1 is a translucent light fixture that is attached to the instrument body so as to cover the lamp with an instrument body that holds the lamp and an opening facing the instrument body. A plurality of protrusions formed on the periphery of the opening of the cover, the positions corresponding to the protrusions of the instrument body by the rotation of the coverShapeThe cover is fixedly held on the instrument main body by engaging with the formed engaging part, and at least one of the instrument main body or the cover is completely engaged with the protrusion and the engagement part. There is a click feeling generating means to give a click feeling at times.The cover has a contact surface that contacts one surface of the instrument body, and the click sensation generating means is formed on one of the contact surface or the one surface of the instrument body, and formed on the other. A plurality of protrusions that overcome the protrusions by rotation of the cover, and the protrusions or the engagements corresponding to the protrusions formed on one of the contact surface or the one surface of the instrument body. The interval between the joint portions is the same, and the interval between each protrusion formed on the other and the corresponding projection or engagement portion is different.The person who attaches the cover to the instrument body without adding a new member to the instrument body,Sense when the convex part gets over the convex partThan,Check that the protruding part of the cover is engaged with the engaging part of the instrument body.certainlyYou can know and keep costs down.In addition, since the person who attaches the cover to the instrument main body can know before and when the engagement is completed, the protrusion of the cover engages with the engagement part of the instrument main body, so that the engagement stage can be known. .
[0011]
  Claims2The invention ofAn instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument body or the cover is provided with a click feeling generating means for providing a click feeling upon completion of the engagement between the projecting portion and the engaging portion, and the click feeling generating means is the contact surface or the instrument. A plurality of convex portions formed on one of the one surface of the main body, and a plurality of concave portions formed on the other and fitted with the convex portions by rotation of the cover,The spacing between the protruding portion or the engaging portion corresponding to each convex portion formed on one of the contact surface or the one surface of the instrument body is the same, and the concave portion formed on the other corresponds to the concave portion It is characterized in that the interval between the protruding part or the engaging part is different,Without attaching a new member to the instrument body, the person who attaches the cover to the instrument body engages the protruding part of the cover with the engagement part of the instrument body more than when the convex part fits into the recess. You can be sure of what you did, and you can reduce costs. Also,A person who attaches the cover to the instrument body can know the engagement stage before the engagement is completed and when the projection of the cover is engaged with the engagement part of the instrument body.
[0012]
  Claims3The invention ofAn instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument body or the cover is provided with a click feeling generating means for providing a click feeling upon completion of the engagement between the projecting portion and the engaging portion, and the click feeling generating means is the contact surface or the instrument. A plurality of convex portions formed on one of the one surface of the main body, and a plurality of concave portions formed on the other and fitted with the convex portions by rotation of the cover,The distance between the contact portion or the concave portion formed on one of the one surface of the instrument body and the corresponding protrusion or the engaging portion is the same, and the convex portion formed on the other corresponds to the convex portion. It is characterized in that the interval between the protruding part or the engaging part is different,Without attaching a new member to the instrument body, the person who attaches the cover to the instrument body engages the protruding part of the cover with the engagement part of the instrument body more than when the convex part fits into the recess. You can be sure of what you did, and you can reduce costs. Also,A person who attaches the cover to the instrument body can know the engagement stage before the engagement is completed and when the projection of the cover is engaged with the engagement part of the instrument body.
[0013]
  Claims4The invention ofAn instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument main body or the cover is provided with a click feeling generating means for providing a click feeling when the engagement between the protrusion and the engagement portion is completed,The engaging portion has a support surface that supports the protruding portion when the engagement of the protruding portion is completed.,in frontAs a means to generate click feeling,in frontThe protruding part that the protruding part gets overOf multiple engaging partsOn the support surfaceRespectivelyFormed, Each protrusion has a different positional relationship with the corresponding protrusionIt is characterized by that,Without adding a new member to the instrument body,The person who attaches the cover to the instrument body can know that the protruding part of the cover has engaged with the engaging part of the instrument body from the sense that the protruding part gets over the protruding part.Can keep costs downTheFurther, when the protrusions are engaged with the engaging parts, a difference occurs in the timing at which the protrusions get over the protrusions, so that the cover installer can know the engagement stage.
[0014]
  Claims5The invention of claim4In the invention described above, the convex portion formed on the support surface has a slope that faces the traveling direction of the protruding portion when the protruding portion is engaged with the engaging portion by rotating the cover. It is characterized by a chevron shape that is gentler than the other slope, and the protruding portion can be engaged with the engaging portion with a light force.
[0015]
  Claims6The invention of claim4In the described invention, the convex portion formed on the support surface is spherical, and there is a variation in the shape of the protruding portion, and there is a case where the track when being engaged with the engaging portion is shifted. However, the projecting portion can get over the projecting portion with a constant force, so that the person who attaches the cover can surely know the completion of the engagement.
[0016]
  Claims7The invention of claim4Claims from6In the invention according to any one of the above, the support surface has a tongue piece in which a hole is formed in the periphery and one end is fixed, and the convex portion is formed on the tongue piece, Even if there is variation in the thickness of the protruding part of the cover, the convex part can be bent, and the feeling when the protruding part gets over the convex part can be made constant, and the cover mounter is engaged. Can be surely known.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
As shown in FIGS. 2 and 3, the lighting fixture of the present embodiment includes a disc-like fixture body 1 made of synthetic resin, and a hook outlet 2 including a hook ceiling or hook rosette disposed on the ceiling surface X. A pair of hook plug blades provided on the upper surface are hooked and locked to be connected electrically and mechanically, and attached to a window hole in the central portion of the instrument body 1. And the mounting adapter 3 is inserted into the mounting adapter 3 by engaging the engaging protrusion 4 whose tip is protruded from the outer peripheral portion of the mounting adapter 3 by a spring bias constantly with the engaging step portion of the inner peripheral surface. Lighted by a cylindrical housing portion 5 for detachably supporting the main body 1, an electronic ballast portion composed of an inverter type lighting circuit, an electronic component of a circuit for controlling lighting and dimming, a pull switch 6, and an electronic ballast. For example, 32W, 40W 2 A printed circuit board 10 that is mounted on the lower surface of the instrument body 1 so as to surround the cylindrical housing portion 5, which is mounted with a socket base 8 for connecting and attaching the annular fluorescent lamps L 1 and L 2, a nightlight socket 9, etc. The outer shape is substantially frustoconical, and the outward flange 12a at the periphery of the large-diameter opening is applied to the lower surface of the instrument body 1 so as to cover the charging part including the printed circuit board 10 disposed on the lower surface side of the instrument body 1. The reflecting plate 12 made of sheet metal that is concentrically arranged and fixed to the lower surface side of the instrument main body 1 by screwing and caulking, and the socket base 8 and the reflecting plate 12 exposed below the opening window 13a formed in the reflecting plate 12. The lower surface of the appliance body 1 covers the fluorescent lamps L1 and L2, which are held and mounted by the lamp holding spring 14 attached to the downward inclined surface, and the nightlight socket 9 exposed from the opening window 13b formed in the reflection plate 12. A cover (glove) 15 made of, for example, an acrylic resin, which is coated with milky white, is bent into a V-shape with a linear spring material, and a pull string 16 coupled to the operating rod of the pull switch 6 is inserted. An annular portion 17a is provided at the base end of both leg portions, and a tip end of both leg portions is constituted by a V-shaped lever 17 that is swingably attached to the peripheral end portion of the instrument body 1.
[0019]
The instrument body 1 is formed with ribs for supporting the printed circuit board 10 and screws for screwing on the lower surface side, and an arcuate window hole 18 is formed at the location where the outward flange 12a of the reflector 12 is in contact. The heat dissipation effect is enhanced.
[0020]
A round hole 20 is provided at the center of the reflector 12 so that the lower end opening of the cylindrical storage unit 5 attached to the instrument body 1 faces, and the lower surface of the mounting adapter 3 stored in the cylindrical storage unit 5 is formed. It is possible to connect the connector 22a at the other end of the power line 22 having one end connected to the circuit of the printed circuit board 10 to the connection portion 21 for power supply which is exposed from the round hole 20 and provided on the lower surface of the mounting adapter 3. It can be done.
[0021]
In addition, the locking projection 4 is pulled into the mounting adapter 3 against the spring bias on the lower surface of the mounting adapter 3 so as to be detached from the locking step provided on the inner peripheral surface of the cylindrical storage portion 5. The operation lever 11 for performing the operation is exposed, and the instrument body 1 can be detached from the mounting adapter 3 with the cover 15 removed.
[0022]
The cover 15 is made of, for example, a flat dome formed of acrylic resin. A circular opening 15a is formed at the center of the upper surface of the dome, and the peripheral portion of the opening 15a is formed on the lower surface of the instrument body 1. Protruding portions (protruding portions) 15d that are flat bodies for fixing and holding the cover 15 are formed to protrude inward at three locations at equal intervals. In addition, a contact surface 15b that comes into contact with the lower surface 1a of the instrument main body 1 when the cover 15 is fixedly held to the instrument main body 1 is provided on the upper surface of the opening 15a.
[0023]
  Further, the protrusion 15d of the cover 15 is engaged with and attached to the lower surface near the peripheral end located outside the outward flange portion 12a of the instrument body 1.Integrally formedEngagement portions 19A to 19C at positions corresponding to protrusions 15d3 placesIt is formed.
[0024]
In attaching the lighting apparatus of the present embodiment to the ceiling, the printed circuit board 10 and the cylindrical storage portion 5 are attached in advance, the reflector 12 is attached, and the fluorescent lamps L1 and L2 are attached to the socket base 8 exposed through the reflector 12. And a holding spring attached to the socket base 8 and a lamp holding spring 14 provided on the reflector 12, and a fixture body 1 in a state in which a bean bulb is mounted on the nightlight socket 9 is prepared. deep. The fluorescent lamps L1 and L2 and the bean ball may be attached immediately before the cover 15 is attached.
[0025]
At the time of installation, first, the hook plug blade of the mounting adapter 3 is hooked and connected to the lower surface side of the hooking outlet 2 to the hooking outlet 2 made of a hooking ceiling or hooking rosette.
[0026]
Next, the appliance body 1 is moved upward in the direction of the ceiling, and the mounting adapter 3 suspended from the catching outlet 2 is stored in the cylindrical shape from the upper end opening of the cylindrical storage portion 5 facing the window hole in the center of the appliance body 1. Insert into part 5. The engaging protrusion 4 that protrudes from the outer peripheral portion of the mounting adapter 3 by this insertion is pushed by the upper inclined surface of the engaging step portion provided on the inner peripheral surface of the cylindrical storage portion 5, while being inserted into the mounting adapter 3. By overcoming the stepped portion and projecting again by spring bias, the engaging step portion is engaged with the downward surface of the engaging step portion, and the instrument main body 1 side is supported through the cylindrical storage portion 5 by this engagement. In this state, the power supply connection portion 21 provided on the lower surface of the mounting adapter 3 is connected to the printed circuit board 10, and the connector 22a at the tip of the power supply line 22 led out is connected.
[0027]
Thus, after the attachment on the side of the instrument body 1 is completed, the cover 15 is attached. Here, the detail of the principal part of the instrument main body 1 and the cover 15 is demonstrated. First, FIG. 1A shows a plan view of the instrument body 1 and FIG. 1B shows a plan view of the cover 15. In FIG. 1A, the instrument main body 1 shows a state in which a reflecting plate 12 and the like are attached, and FIGS. 1A and 1B both show a state seen from the lower surface side.
[0028]
As shown to Fig.1 (a), the engagement parts 19A, 19B, and 19C are provided in three places near the peripheral edge part of the instrument main body 1 at equal intervals. FIG. 5 shows the structure of the engaging portion 19A. The engaging portions 19B and 19C have the same configuration. When the appliance main body 1 is attached to the ceiling, the upper side is located on the ground side and the lower side is located on the ceiling side in FIG.
[0029]
1 and 5, the engaging portion 19A has an outer peripheral side surface 19s (front side in FIG. 5) and an end surface 19e opposed to the protruding portion 15d when the cover 15 is rotated. A front chamber 19f which is located on the end surface 19e side and has a height sufficiently larger than the height from the contact surface 15b to the opposite surface of the protrusion 15d to the instrument body 1, and communicates with the front chamber 19f, and the thickness of the protrusion 15d And a rear chamber 19g having a height substantially equal to the height.
[0030]
As shown in FIG. 1 (a), on the lower surface 1a of the instrument body 1, for example, a spherical (or hemispherical) convex portion (a dowel) 30a is integrally formed in the vicinity of the circumferential direction of the engaging portion 19A. Moreover, as shown in FIG.1 (b), the convex part 31a which protrudes inward of the cover 15 in the position corresponding to the said convex part 30a in the contact surface 15b which contacts the lower surface 1a of the instrument main body 1 of the cover 15 is shown. It is integrally formed.
[0031]
Next, a state when the cover 15 is attached to the instrument main body 1 is schematically shown in FIG. 4, and the attachment method will be described with reference to FIGS. 1, 4, and 5. First, the cover 15 is lifted from below, and the contact surface 15b is brought into contact with the lower surface 1a of the instrument body 1 exposed to the outside from the peripheral end of the reflecting plate 12, and the cover 15 is rotated in the P direction in this state. By this rotation, each protrusion 15d of the cover 15 enters and engages with the engaging portions 19A, 19B, and 19C of the instrument body 1. The engaging portion 19A will be described. The protrusion 15d enters the front chamber 19f through the opening of the end surface 19e and the side surface 19s of the engaging portion 19A by the rotation of the cover 15, and enters the rear chamber 19g by further rotation. It enters, hits the rear wall 19h of the rear chamber, and engages at that position so as to be supported by the support surface 19k which is the bottom surface of the rear chamber 19g.
[0032]
By the rotation of the cover 15, the convex portion 31 a provided on the cover 15 comes into contact with and overtakes the convex portion 30 a provided on the lower surface 1 a of the instrument body 1. Here, simultaneously with the completion of the engagement between the engaging portion 19A and the projecting portion 15d, the positional relationship between the projecting portions 30a and 31a is set so that the projecting portion 31 gets over the projecting portion 30a. By doing so, the sense (click feeling) when the convex portion 31a gets over the convex portion 30a when the engagement is completed is transmitted to the installer of the cover 15, and the installer can know the engagement completion state from the sense. it can. That is, the convex portions 30a and 31a constitute a click feeling generating means for providing a click feeling when the engagement of the protruding portion 15d of the cover 15 and the engaging portions 19A, 19B, and 19C of the instrument body 1 is completed.
[0033]
By this engagement, the cover 15 is fixed and held on the lower surface 1a side of the instrument main body 1 and covers the reflector 12, the fluorescent lamps L1 and L2, and the bean ball attached to the lower surface side of the instrument main body 1. At this time, the contact surface 15 b of the cover 15 comes into contact with the lower surface of the instrument body 1.
[0034]
Next, another configuration example is shown in FIGS. In FIG. 1, the convex portion 30a is formed only in the vicinity of the engaging portion 19A of the instrument body 1, whereas in FIG. 6, the convex portions 30b, 30b, 30c is integrally formed. The convex portions 30a, 30b, and 30c are formed so that the distances A1, A2, and A3 between the engaging portions 19A, 19B, and 19C and the convex portions 30a, 30b, and 30c satisfy A1 <A2 <A3. Yes.
[0035]
Further, as shown in FIG. 6B, convex portions 31a, 31b, and 31c are integrally formed at positions corresponding to the convex portions 30a, 30b, and 30c inward from the contact surface 15b of the cover 15. Yes. That is, the convex portions 31a, 31b, and 31c are formed in the vicinity of each protruding portion 15d. Here, the intervals B1, B2, B3 between the convex portions 31a, 31b, 31c and the protruding portions 15d are the same interval.
[0036]
In addition, the projection 31a is set so as to get over the projection 30a in the vicinity of the engagement portion 19A when the engagement between the engagement portions 19A, 19B, 19C and the projections 15d is completed. Since the positional relationship between the convex portions 30a, 30b, 30c and the convex portions 31a, 31b, 31c is as described above, when the cover 15 is rotated in the P direction, the convex portions 31a, 31b, 31c The order of overcoming 30a, 30b, and 30c is the order of the convex portions 31c, 31b, and 31a. That is, the protrusions 31b and 31c get over the protrusions 30b and 30c before the completion of the engagement, and the protrusion 31a gets over the protrusion 30a when the engagement is completed.
[0037]
By configuring in this way, a person who attaches the cover 15 to the instrument main body 1 feels the above-mentioned sensation (click feeling) in order, so that the protrusion 15d of the cover 15 is engaged with each engaging part 19A of the instrument main body 1. , 19B, 19C can be known.
[0038]
FIG. 7 shows another configuration example in which the engagement stage can be known in this way. In this configuration example, as shown in FIG. 7A, the intervals A1, A2, and A3 of the engaging portions 19A, 19B, and 19C of the instrument body 1 and the convex portions 30a, 30b, and 30c are the same. On the other hand, as shown in FIG. 7B, the intervals B1, B2, B3 between the protrusions 15 of the cover 15 and the protrusions 31a, 31b, 31c have a relationship of B1> B2> B3. Yes. Also in this configuration example, as in the case of FIG. 6, when the cover 15 is rotated in the P direction, the protrusions 30c, 30b, and 30a are overcome in the order of the protrusions 31c, 31b, and 31a to complete the engagement. The installer can know the engagement stage.
[0039]
Yet another configuration example is shown in FIG. In FIG. 1, the protrusions 31 a, 31 b, and 31 c protrude from the contact surface 15 b of the cover 15 in the inward direction, whereas in FIG. 8, the protrusion 15 protrudes from the contact surface 15 b toward the instrument body 1 side. Protrusions (ribs) 32a, 32b, 32c (the same shape as the protrusions 32 in FIG. 9) having a length in the radial direction are integrally projected on the contact surface 15b. Here, the intervals B1, B2, and B3 from the protruding portions 15d of the convex portions 32a, 32b, and 32c are the same.
[0040]
On the other hand, each convex part 30a, 30b, 30c provided in the vicinity of each engaging part 19A, 19B, 19C of the instrument body 1 is formed at a position corresponding to each convex part 32a, 32b, 32c. Compared to the case of FIG. 1, it is formed on the outer peripheral side of the instrument body 1. The intervals A1, A2, and A3 between the convex portions 30a, 30b, and 30c and the engaging portions 19A, 19B, and 19C satisfy A1 <A2 <A3.
[0041]
Also in this configuration example, when the cover 15 is rotated in the P direction, the convex portions 32c, 32b, and 32a get over the convex portions 30c, 30b, and 30a in this order, and finally the convex portion 32a gets over the convex portion 30a. Furthermore, each protrusion 15d comes to engage with each of the engaging portions 19A, 19B, and 19C, and the completion of the engagement can be known when the installer feels the sense that the convex portion gets over the convex portion in order.
[0042]
It should be noted that the recesses into which the convex portions 30a, 30b, 30c of the instrument main body 1 are fitted when the engagement is completed are arranged so that the lower surface 1a of the instrument main body 1 and the contact surface 15b of the cover 15 come into contact with each other without any gap when the engagement is completed. It is desirable to provide a recess on the contact surface 15b of the cover 15 and a recess in which the projections 32a, 32b, 32c of the cover 15 are fitted on the lower surface 1a of the instrument body 1.
[0043]
Further, even if the intervals B1, B2, B3 are set as B1> B2> B3 and the intervals A1, A2, A3 are set as A1 = A2 = A3, the same effect as in FIG. 8 is obtained. It is done.
[0044]
Here, still another configuration example is shown in FIG. The instrument main body 1 shown in FIG. 10 (a) has the same configuration as that shown in FIG. 8 (a). However, as shown in FIG. 10 (b), the cover 15 is placed on the contact surface 15b shown in FIG. 8 (b). Concave portions 33a, 33b, and 33c into which the convex portions 30a, 30b, and 30c of the instrument body 1 are fitted are formed at positions where the convex portions 32a, 32b, and 32c are formed. In this configuration example, when the cover 15 is rotated in the P direction, the convex portions 30c, 30b, and 30a are fitted in the concave portions 33c, 33b, and 33a in this order, and finally the convex portion 30a is formed in the concave portion 33a. When fitting, each projecting portion 15d comes to engage with each engaging portion 19A, 19B, 19C, and the installer can know the engaging stage with the feeling that the convex portion fits into the concave portion. At the same time, the completion of engagement can be known.
[0045]
It should be noted that the recesses into which the convex portions 30a, 30b, 30c of the instrument main body 1 are fitted when the engagement is completed are arranged so that the lower surface 1a of the instrument main body 1 and the contact surface 15b of the cover 15 come into contact with each other without any gap when the engagement is completed. It is desirable to provide it on the contact surface 15b of the cover 15 separately from the respective recesses 33a, 33b, 33c.
[0046]
Further, even if the intervals B1, B2, B3 are set as B1> B2> B3 and the intervals A1, A2, A3 are set as A1 = A2 = A3, the same effect as in FIG. 10 is obtained. can get.
[0047]
Next, another configuration example of the engaging portions 19A, 19B, and 19C is shown. FIG. 11 is a perspective view showing another structure of the engaging portion, and is the same as FIG. 5 in that the upper side is located on the ground side and the lower side is located on the ceiling side. 11 differs from the engaging portion 19A shown in FIG. 5 in that a convex portion 40 is formed to project in the direction of the protruding portion 15d on the support surface 19k that supports the protruding portion 15d of the cover 15. Is a point. This convex part 40 has a length in the radial direction of the instrument body 1, and the cross-sectional shape at the opened side surface is a chevron shape (triangular rib) as shown in FIG. The inclined surface 40a facing the traveling direction Q of the protruding portion 15d when the protruding portion 15d of the cover 15 is engaged with the engaging portion 39 is gentler than the other inclined surface 40b.
[0048]
The operation when the protruding portion 15d of the cover 15 is engaged with the engaging portion 39 will be described. First, when the cover 15 is rotated, the protruding portion 15d of the cover 15 enters in the Q direction from the end surface 19e of the engaging portion 39, first enters the front chamber 19f, and enters the rear chamber 19g by further rotation.
[0049]
Then, the projecting portion 15d contacts the slope 40a of the convex portion 40, proceeds along the slope 40a, descends along the slope 40b on the opposite side beyond the peak of the mountain shape, and the plane of the projecting portion 15d is the support surface 19k. And is supported by the engaging portion 39. At this time, the projecting portion 15d is engaged between the rear wall 19h of the rear chamber 19g and the convex portion 40. That is, when the engagement between the protrusion 15 d and the engagement portion 39 is completed, the protrusion 15 d gets over the convex portion 40 of the engagement portion 39.
[0050]
Thereby, the person who attaches the cover 15 to the instrument main body 1 can know the completion of the engagement between the projecting portion 15d and the engaging portion 39 by a sense (click feeling) when the projecting portion 15d gets over the projecting portion 40. . That is, the convex part 40 corresponds to a click feeling generating means. Further, since the inclined surface 40a facing the traveling direction Q of the protruding portion 15d is gentler than the other inclined surface 40b, the protruding portion 15d can be engaged with the engaging portion 39 with a light force. It becomes difficult to come off.
[0051]
Next, still another configuration example of the engaging portion is shown in FIG. 13 is different from FIG. 11 in that the support surface 19k of the engaging portion 39 is provided with a tongue piece 43 in which holes 41 are formed on three sides and the one end 42 is fixed, as shown in FIG. The convex portion 40 is formed at the other end of the tongue piece 43.
[0052]
With this configuration, the convex portion 40 can bend in a direction perpendicular to the support surface 19k, and even if the thickness of the protruding portion 15d of the cover 15 varies, the protruding portion 15d gets over the convex portion 40. The feeling of time can be made constant, and the person who attaches the cover 15 can surely know the completion of the engagement of the protruding portion 15d with the engaging portion 39.
[0053]
In FIGS. 11 and 13, the convex portion 40 has a length in the radial direction of the instrument body 1 and the cross section has a mountain shape, but it may be spherical or hemispherical. By doing so, even if the shape of the projecting portion 15d varies and the trajectory when engaging with the engaging portion 39 may shift, the projecting portion 15d gets over the convex portion 40 with a constant force. It is possible to know the completion of engagement reliably.
[0054]
FIG. 14 shows an example in which the convex portions are formed at the respective engaging portions of the instrument body 1. As shown in FIG. 14B, three protrusions 15d are formed on the cover 15 at equal intervals. On the other hand, as shown in FIG. 14 (a), the engaging portions 39A, 39B, 39C are also formed in the instrument body 1 at three equal intervals, but are formed in the engaging portions 39A, 39B, 39C. The convex portions 40a, 40b, 40c are not formed at equal intervals, and the distance between each convex portion 40c, 40b, 40a and the back wall 19h is formed at a position where 40c <40b <40a.
[0055]
That is, each convex part 40a, 40b, 40c differs in the positional relationship with respect to the protrusion part 15d corresponding to it, and when the rotation direction of the cover 15 is a P direction, each protrusion part 15d is the order of convex part 40a, 40b, 40c. You will get over with. At this time, when the corresponding protruding portion 15d gets over the convex portion 40c, each protruding portion 15d is engaged with each engaging portion 39A, 39B, 39C. By doing so, the person who attaches the cover 15 can know the engagement stage.
[0056]
【The invention's effect】
  As described above, the invention of claim 1 includes an instrument body that holds a lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp. A plurality of protrusions formed on the periphery of the opening of the cover, the positions corresponding to the protrusions of the instrument body by rotation of the coverShapeThe cover is fixedly held on the instrument main body by engaging with the formed engaging part, and at least one of the instrument main body or the cover is completely engaged with the protrusion and the engagement part. There is a click feeling generating means to give a click feeling at times.The cover has a contact surface that contacts one surface of the instrument body, and the click sensation generating means is formed on one of the contact surface or the one surface of the instrument body, and formed on the other. A plurality of protrusions that the respective protrusions get over by rotation of the cover, and the protrusions or the engagements corresponding to the protrusions formed on one of the contact surface or the one surface of the instrument body. The interval between the joint portions is the same, and the interval between each protrusion formed on the other and the corresponding projection or engagement portion is different.Therefore, the person who attaches the cover to the instrument body without adding a new member to the instrument body,Sense when the convex part gets over the convex partThan,Check that the protruding part of the cover is engaged with the engaging part of the instrument body.certainlyYou can know and keep costs down.In addition, since the person who attaches the cover to the instrument main body can know before and when the engagement is completed, the protrusion of the cover engages with the engagement part of the instrument main body, so that the engagement stage can be known. .
[0062]
  Claims2The invention ofAn instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument body or the cover is provided with a click feeling generating means for providing a click feeling upon completion of the engagement between the projecting portion and the engaging portion, and the click feeling generating means is the contact surface or the instrument. A plurality of convex portions formed on one of the one surface of the main body, and a plurality of concave portions formed on the other and fitted with the convex portions by rotation of the cover,The spacing between the protruding portion or the engaging portion corresponding to each convex portion formed on one of the contact surface or the one surface of the instrument body is the same, and the concave portion formed on the other corresponds to the concave portion Because the interval between the protruding part or the engaging part is different,Without attaching a new member to the instrument body, the person who attaches the cover to the instrument body engages the protruding part of the cover with the engagement part of the instrument body more than when the convex part fits into the recess. You can be sure of what you did, and you can reduce costs. Also,A person who attaches the cover to the instrument body can know the engagement stage before the engagement is completed and when the projection of the cover is engaged with the engagement part of the instrument body.
[0063]
  Claims3The invention ofAn instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument body or the cover is provided with a click feeling generating means for providing a click feeling upon completion of the engagement between the projecting portion and the engaging portion, and the click feeling generating means is the contact surface or the instrument. A plurality of convex portions formed on one of the one surface of the main body, and a plurality of concave portions formed on the other and fitted with the convex portions by rotation of the cover,The distance between the contact portion or the concave portion formed on one of the one surface of the instrument body and the corresponding protrusion or the engaging portion is the same, and the convex portion formed on the other corresponds to the convex portion. Because the interval between the protruding part or the engaging part is different,Without attaching a new member to the instrument body, the person who attaches the cover to the instrument body engages the protruding part of the cover with the engagement part of the instrument body more than when the convex part fits into the recess. You can be sure of what you did, and you can reduce costs. Also,A person who attaches the cover to the instrument body can know the engagement stage before the engagement is completed and when the projection of the cover is engaged with the engagement part of the instrument body.
[0064]
  Claims4The invention ofAn instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument main body or the cover is provided with a click feeling generating means for providing a click feeling when the engagement between the protrusion and the engagement portion is completed,The engaging portion has a support surface that supports the protruding portion when the engagement of the protruding portion is completed.,in frontAs a means to generate click feeling,in frontThe protruding part that the protruding part gets overOf multiple engaging partsOn the support surfaceRespectivelyFormed, Each protrusion has a different positional relationship with the corresponding protrusionBecauseWithout adding a new member to the instrument body,The person who attaches the cover to the instrument body can know that the protruding part of the cover has engaged with the engaging part of the instrument body from the sense that the protruding part gets over the protruding part.Can keep costs downTheFurther, when the protrusions are engaged with the engaging parts, a difference occurs in the timing at which the protrusions get over the protrusions, so that the cover installer can know the engagement stage.
[0065]
  Claims5The invention of claim4In the invention described above, the convex portion formed on the support surface has a slope that faces the traveling direction of the protruding portion when the protruding portion is engaged with the engaging portion by rotating the cover. Since it has a mountain shape that is gentler than the other slope, the protruding portion can be engaged with the engaging portion with a light force, and on the contrary, the engagement is difficult to disengage.
[0066]
  Claims6The invention of claim4In the described invention, since the convex portion formed on the support surface is spherical, even if there is a variation in the shape of the protruding portion and the track when engaging with the engaging portion may shift, The part can get over the convex part with a constant force, and the person who attaches the cover can surely know the completion of engagement.
[0068]
  Claims7The invention of claim4Claims from6In the invention according to any one of the above,Support surfaceIs, There are holes aroundFormedThe tongue is fixed at one end, and the convex portion is formed on the tongue.For,Even if the convex part can be bent and the thickness of the protruding part of the cover varies,ProtrusionIs convexGet over the clubThe feeling of time can be constant, Cover installerButEngagementCompleteThecertainlyI can know.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing the structure of each part of a lighting fixture corresponding to an embodiment of the present invention, and (a) and (b) are plan views.
FIG. 2 is an exploded perspective view showing the structure of the luminaire.
FIG. 3 is an exploded perspective view showing a state when the lighting fixture is attached.
FIG. 4 is a perspective view showing a state when the cover of the lighting apparatus is attached.
FIG. 5 is a perspective view showing a structure of an engaging portion of the lighting fixture same as above.
FIGS. 6A and 6B are diagrams showing a structure in which a plurality of convex portions are formed in the above-described lighting apparatus, and FIGS. 6A and 6B are plan views.
FIGS. 7A and 7B are diagrams showing another structure in the case where a plurality of convex portions are formed in the above-described lighting apparatus, and FIGS. 7A and 7B are plan views. FIGS.
FIGS. 8A and 8B are views showing still another structure when a plurality of convex portions are formed in the above-described lighting apparatus, and FIGS. 8A and 8B are plan views. FIGS.
FIG. 9 is a perspective view showing another structure of the cover of the same lighting fixture.
FIGS. 10A and 10B are diagrams showing still another structure in the case where a plurality of convex portions are formed in the above-described lighting fixture, and FIGS. 10A and 10B are plan views. FIGS.
FIG. 11 is a perspective view showing a structure of another engagement portion in the lighting fixture same as above.
FIG. 12 is a side view showing a structure of a main part of another engaging portion in the lighting fixture same as above.
FIG. 13 is a perspective view showing a structure of still another engaging portion in the lighting fixture same as above.
FIGS. 14A and 14B are diagrams showing the structure of each part when a convex part is provided in the engaging part in the lighting apparatus same as above, and FIGS. 14A and 12B are plan views.
[Explanation of symbols]
1 Instrument body
1a Bottom surface
12 Reflector
15 Cover
15b Contact surface
15d protrusion
19A, 19B, 19C Engagement part
30a Convex
31a Convex part

Claims

An instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. a plurality of protrusions engage the engaging portion made form a position corresponding to the projecting portion of the instrument body by rotation of said cover, configured to the cover is fixed and held to the tool body And at least one of the instrument main body and the cover is provided with a click feeling generating means for providing a click feeling upon completion of the engagement between the projecting portion and the engaging portion, and the cover is in contact with one surface of the instrument main body. The click feeling generating means includes a plurality of convex portions formed on one of the contact surface or the one surface of the instrument body, and the convex portions formed on the other are rotated by the cover. A plurality of convex portions, and the interval between the corresponding projecting portion or the engaging portion corresponding to each convex portion formed on one of the contact surface or the one surface of the instrument body is the same, and the other The luminaire is characterized in that the intervals between the projecting portions or the engaging portions corresponding to the respective convex portions formed in are different .

An instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument body or the cover is provided with a click sensation generating means for providing a click sensation upon completion of the engagement between the protrusion and the engagement part, and the cover is a contact surface that contacts one surface of the instrument body has the click feeling generating means, said a convex portion which is plurally formed on one of the one surface of the contact surface or the instrument body, is formed on the other the respective convex portions fitted by the rotation of the cover match Have a plurality of recesses, the distance between the projection or the engaging portion corresponding to the respective convex portions formed on one of a surface of the contact surface or the instrument body are identical, formed on the other the protrusions or the engaging portion and the spacing different for Rukoto luminaire you wherein corresponding to each recess is.

An instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. In addition, at least one of the instrument body or the cover is provided with a click sensation generating means for providing a click sensation upon completion of the engagement between the protrusion and the engagement part, and the cover is a contact surface that contacts one surface of the instrument body has the click feeling generating means, said a convex portion which is plurally formed on one of the one surface of the contact surface or the instrument body, is formed on the other the respective convex portions fitted by the rotation of the cover match Have a plurality of recesses, the distance between the projection or the engaging portion corresponding to the contact surface or each recess formed in one of said one surface of said instrument body are identical, are formed on the other the protrusions or the engaging portion and the luminaire spacing you wherein different for Rukoto corresponding to the convex portions.

An instrument body that holds the lamp, and a translucent cover that has an opening facing the instrument body and is attached to the instrument body so as to cover the lamp, and is formed on the periphery of the opening of the cover. The plurality of protrusions are engaged with engagement portions formed at positions corresponding to the protrusions of the instrument body by the rotation of the cover, and the cover is fixedly held on the instrument body. At least one of the instrument main body or the cover is provided with a click feeling generating means for providing a click feeling when the engagement between the protruding portion and the engaging portion is completed, and the engaging portion is when the engagement of the protruding portion is completed. Protrusions that have support surfaces that support the protrusions , and that the protrusions get over as the click sensation generating means are formed on the support surfaces of the plurality of engaging portions, respectively, and each protrusion corresponds to a corresponding protrusion. Against Lighting equipment shall be the features that you have different positional relationship.

The convex portion formed on the support surface is gentler on the slope facing the traveling direction of the projection when the cover is rotated and the projection is engaged with the engagement portion than the other slope. lighting device according to claim 4, wherein that you have a chevron shape is.

Lighting device according to claim 4, wherein said protrusions formed on the support surface, wherein the spherical der Rukoto.

Wherein the support surface has a tongue of which one end is fixed by holes on the surrounding formation, claim 6 claim 4, wherein the kite the convex portion is formed on a piece of the tongue The lighting fixture as described in .