JP4144315B2

JP4144315B2 - Lamp socket mounting structure

Info

Publication number: JP4144315B2
Application number: JP2002295434A
Authority: JP
Inventors: 雅章磯田; 研一河野
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-10-08
Filing date: 2002-10-08
Publication date: 2008-09-03
Anticipated expiration: 2022-10-08
Also published as: JP2004134143A

Description

【０００１】
【発明の属する技術分野】
本発明は、直管ランプの端部口金部が着脱自在に嵌合接続されるソケットを照明器具本体の端部内側でソケット固定板に取り付けてなるランプソケット取付構造に関するものである。
【０００２】
【従来の技術】
従来から、特開平８−１６７４６１号公報に示される如く、直管ランプの端部口金部が着脱自在に嵌合接続されるソケットを照明器具本体の端部内側でソケット固定板に取り付けるランプソケット取付構造は知られている。この場合、ソケットの背面に弾性を有する係止片を突設し、この係止片をソケット固定板に穿設される係止受け孔に挿入嵌合することにより、このソケット固定板に同ソケットを取着固定するものである。それ故に、この場合、ソケットをソケット固定板に対して簡単に取着固定することができる。
【０００３】
しかしながら、この場合、係止片を弾性変形させて係止受け孔に挿入嵌合させるものであるので、この係止片は弾性変形し易くするために薄肉に形成されており、ソケットを取付支持する強度が低いものとなっている。又、取付支持強度を高めるために係止片を強固なものとすると、この係止片を係止受け孔に挿入嵌合させ難くなって取付作業が困難となる。しかも、係止片を弾性変形し易くするためには、この係止片をソケットの背方へ長く突出させる必要があり、係止受け孔に挿通された同係止片はソケット固定板の背方へ長く突出することになって、このソケット固定板の背方に大きな取付スペースを要するものとなっている。
【０００４】
又、特開２００１−２５０４１７号公報に示される如く、直管ランプの端部口金部が着脱自在に嵌合接続されるソケットを照明器具本体の端部内側でソケット取付台に取り付けるランプソケット取付構造も知られている。この場合、照明器具本体の端部付近の内側にソケット取付台を取着固定し、このソケット取付台の側面部にソケットの背面ではなく側面を結合固着するものである。それ故に、この場合、ソケットを照明器具本体の端部内側でソケット取付台を介し強固に取着固定することができる。
【０００５】
しかしながら、この場合、照明器具本体にソケット取付台を取着固定して、更に、このソケット取付台にソケットを固着しなければならず、取付作業が困難で構造も複雑となって、製造コストの高いものとなっている。しかも、ソケットの背面ではなく側面がソケット取付台に固着されるもの（自立型ソケット）であるため、直管ランプを同ソケットに対して着脱させる際に、このソケットはランプ軸方向の力を受けてその固着基部を中心に振れ動かされることとなり、長期間の使用で同固着基部が破損し易いものとなっている。
【０００６】
【特許文献１】
特開平８−１６７４６１号公報
【０００７】
【特許文献２】
特開２００１−２５０４１７号公報
【０００８】
【発明が解決しようとする課題】
そこで、図１３〜１５に示す如く、ソケット１の背面側をソケット固定板２に対しスライドさせて取着固定するランプソケット取付構造が考えられた。この場合、ソケット１の背面両側に係止片３を突設し、この両係止片３に対応した間隔でソケット固定板２に対の係止受け孔４を穿設し、両係止片３を両係止受け孔４に挿入し下方へスライドさせて係止固定させるものである。
【０００９】
ここで、図１５に示す如く、両係止受け孔４は、各上側に挿入部分となる巾広部、各下側に固定部分となる巾狭部を有し、上下の長さ寸法ｔが等しくて同形状に形成されており、両係止片３は巾広部で挿入されて下方へスライドされ、巾狭部で同両係止受け孔４に係止固定される。更に、ソケット１の背面に位置決め凸起９を形成し、下方へスライドされて両係止片３が両係止受け孔４に係止固定された状態で、この位置決め凸起９が係止される位置決め凹部10をソケット固定板２に形成してもいる。
【００１０】
それ故に、この場合、両係止片３を両係止受け孔４に挿入してソケット１を下方へスライドさせるだけで、このソケット１をソケット固定板２に対して簡単に取着固定することができ、その際、両係止片３は弾性を必要とせず強固に形成されて取付支持強度が保持される。しかも、ソケット１にかかるランプ軸方向の力がその背面側のソケット固定板２で受けられて、同ソケット１はランプ軸方向に振れ動き難く、その取着固定部分での破損が防止される。
【００１１】
又、この場合、係止片３が下方へスライドされることで係止受け孔４の周縁に係止固定されるものであるため、同係止片３はソケット固定板２の背方へ長く突出しないものとして形成されており、このソケット固定板２の背方に大きな取付スペースを要しない。更に、位置決め凸起９が位置決め凹部10に係止されて、ソケット１はソケット固定板２に対して正確な位置で取着固定される。
【００１２】
しかしながら、この場合、両係止受け孔４が共に上下方向に長い長孔（同じ寸法ｔ）として大きく形成されるので、ソケット固定板２の強度は低下し、ソケット１を支持する強度が十分には確保されない。又、両係止片３を両係止受け孔４に挿入した状態で直線的に揃えてスライドさせることは困難で、その際のソケット１、ソケット固定板２間での摩擦抵抗も大きくなって、同ソケット１の取付作業が十分に簡単であるとは言い難いものである。
【００１３】
本発明は、上記従来の技術における問題を悉く解決するために発明されたもので、その課題は、直管ランプ用のソケットが照明器具本体に対して簡単且つ確実強固に取付支持されるランプソケット取付構造を提供することである。
【００１４】
【課題を解決するための手段】
本発明の請求項１記載のランプソケット取付構造は、直管ランプの端部口金部が着脱自在に嵌合接続されるソケットを照明器具本体の端部内側でソケット固定板に取り付けてなるランプソケット取付構造であって、ソケットの背面両側に係止片を突設し、この両係止片に対応した間隔でソケット固定板に対の係止受け孔を穿設し、一方の係止受け孔に係止片を係止させた状態で、この係止部位を略中心として他方の係止受け孔に係止される係止片を回動させることにより、両係止片を両係止受け孔に係止固定してなる。
【００１５】
したがって、この場合、ソケットの背面両側に係止片が突設され、この両係止片に対応した間隔でソケット固定板には対の係止受け孔が穿設されており、このソケットを照明器具本体の端部内側で同ソケット固定板に取り付けるに際し、一方の係止受け孔に係止片を係止させた状態で、この係止部位を略中心として他方の係止受け孔に係止される係止片を回動させることにより、両係止片は両係止受け孔に係止固定される。それ故、直管ランプ用のソケットが照明器具本体のソケット固定板に対して簡単且つ確実強固に取付支持される。
【００１６】
すなわち、両係止片を両係止受け孔に挿入した後は、一方の係止片と係止受け孔との係止部位を略中心としてソケットを回動させることで、両係止片が両係止受け孔に係止固定され、その際、両係止片は平行移動されるより回転移動される方が容易に動作され、しかも、同ソケットの背面とソケット固定板との相互間での摺接面積は小さくなって摩擦抵抗が低減される。それ故、ソケットはソケット固定板に対して簡単に取り付けられ、同ソケットが回動されて取り付けられるので、そのためのスペースも小さくなる。
【００１７】
又、前記回動中心となる方の係止受け孔は係止片を移動させるために長く形成されることがなくなり、ソケット固定板は同係止受け孔が小さくなって強固なものとなり、しかも、前記係止片は弾性変形する必要がなく強固なものとして形成される。それ故、ソケットはソケット固定板に対して確実強固に支持される。更に、ソケットは直管ランプ用であり、ランプ交換時等にランプ軸方向の力が同ソケットにかかっても、このソケットの背面側のソケット固定板で受けられて破損は防止される。
【００１８】
本発明の請求項２記載のランプソケット取付構造は、上記請求項１記載のランプソケット取付構造において、直管ランプの端部口金部が着脱自在に嵌合接続される略円筒状のソケット嵌合部の外周にソケット基部を突設してソケットが形成され、同ソケット基部の背面両側に係止片を突設したことを特徴とする。
【００１９】
したがって、この場合は特に、略円筒状のソケット嵌合部の外周にソケット基部が突設されてソケットは形成され、同ソケット基部の背面両側に係止片が突設されるので、このソケット基部側を中心側とし同ソケット嵌合部側を移動側として同ソケットを回動させることができ、比較的小さなモーメント力で回動させて両係止片を両係止受け孔に係止固定することができ、その際、電源供給の配線側となる同ソケット基部の移動も少なくなる。
【００２０】
本発明の請求項３記載のランプソケット取付構造は、上記請求項２記載のランプソケット取付構造において、ソケットがそのソケット嵌合部とソケット基部とが略水平となる状態から同ソケット嵌合部が下方へ傾くように回動されることで、他方の係止受け孔に係止される係止片が斜め下方へと回動されて、両係止片が両係止受け孔に係止固定されるようになしたことを特徴とする。
【００２１】
したがって、この場合は特に、ソケット基部とソケット嵌合部とが略水平となる状態からこのソケット嵌合部が下方へ傾くようにソケットは回動され、移動側の係止片が斜め下方へと回動されて係止受け孔に係止固定されるので、この係止受け孔に対して同移動側の係止片は、同ソケットやこれに接続保持される直管ランプ等の重力によって、斜め上方へ抜け外れないよう確実に係止固定される。
【００２２】
本発明の請求項４記載のランプソケット取付構造は、上記請求項２又は３記載のランプソケット取付構造において、ソケット基部の背面両側端に背方外側へと略Ｌ字形状に折曲した係止片を突設し、この係止片が係止受け孔の周縁に係止固定されるようになしたことを特徴とする。
【００２３】
したがって、この場合は特に、係止片が略Ｌ字形状でソケット基部の背面両側端から背方外側へと突出するので、同係止片を係止受け孔に目視しながら容易に挿入することができ、しかも、同係止片と係止受け孔との係止部位が両側に間隔をあけて配置されることになるため、ソケットはソケット固定板に対して安定した状態で取着固定される。
【００２４】
本発明の請求項５記載のランプソケット取付構造は、上記請求項１〜４のいずれか一つに記載のランプソケット取付構造において、両係止片を略同形状に形成し、回動中心となる方の係止受け孔をこの係止片が挿入されるように同係止片と略同形状に形成し、他方の係止受け孔を同係止片が挿入される挿入開口部とこの挿入開口部に連続して同係止片が回動される移動開口部とを有するよう同係止片よりも大形状に形成したことを特徴とする。
【００２５】
したがって、この場合は特に、係止片と略同形状に形成された係止受け孔で同係止片が大きくずれ動くことなく回動され、このずれ動き難い係止部位を回動中心として、他方の係止片は他方の係止受け孔の挿入開口部から移動開口部へとスムーズに回動され、この移動開口部の端縁にて確実に係止固定される。
【００２６】
本発明の請求項６記載のランプソケット取付構造は、上記請求項１〜５のいずれか一つに記載のランプソケット取付構造において、ソケットの背面に位置決め凸起を形成し、回動されて両係止片が両係止受け孔に係止固定された状態で、この位置決め凸起が係止される位置決め凹部をソケット固定板に形成し、同位置決め凸起を押圧されることで弾性に抗して引っ込むように突設したことを特徴とする。
【００２７】
したがって、この場合は特に、ソケットが回動されて両係止片が両係止受け孔に係止固定された状態で、同ソケット背面に形成された位置決め凸起がソケット固定板に形成された位置決め凹部に係止されるので、このソケットは同ソケット固定板に対して正確な位置で取着固定される。しかも、位置決め凸起は押圧されることで弾性に抗し引っ込むように突設されているので、ソケットが回動される際、このソケットの背面で同位置決め凸起は押圧され弾性に抗して引っ込み、抵抗少なく且つ同弾性によりがたつかないよう安定した状態で同ソケットがスムーズに回動される。
【００２８】
本発明の請求項７記載のランプソケット取付構造は、上記請求項１〜６のいずれか一つに記載のランプソケット取付構造において、ソケット固定板に当止片を突設し、回動されて両係止片が両係止受け孔に係止固定された状態で、ソケットの外縁端が同当止片で当止されるようになしたことを特徴とする。
【００２９】
したがって、この場合は特に、ソケットが回動されて両係止片が両係止受け孔に係止固定された状態で、ソケット固定板に突設された当止片に同ソケットの外縁端が当止されるので、このソケットは同ソケット固定板に対して所定位置でより確実強固に取着固定される。
【００３０】
【発明の実施の形態】
図１〜１２は、本発明の請求項１〜７全てに対応した一実施形態であるランプソケット取付構造を示している。このランプソケット取付構造は、図３に示す如く、直管ランプＬの端部口金部L1が着脱自在に嵌合接続されるソケット１を照明器具本体Ｈの端部内側でソケット固定板２に取り付けてなる。そして、図１、２に示す如く、ソケット１の背面両側に係止片３を突設し、この両係止片３に対応した間隔でソケット固定板２に対の係止受け孔４を穿設し、一方の係止受け孔４に係止片３を係止させた状態で、この係止部位Ｋを略中心として他方の係止受け孔４に係止される係止片３を回動させることにより、両係止片３を両係止受け孔４に係止固定してなる。
【００３１】
又、この実施形態のランプソケット取付構造では、直管ランプＬの端部口金部L1が着脱自在に嵌合接続される略円筒状のソケット嵌合部５の外周にソケット基部６を突設してソケット１が形成され、同ソケット基部６の背面両側に係止片３を突設している。
【００３２】
この場合、図１に示す如く、ソケット１がそのソケット嵌合部５とソケット基部６とが略水平となる状態から同ソケット嵌合部５が下方へ傾くように回動されることで、図２に示す如く、他方の係止受け孔４に係止される係止片３が斜め下方へと回動されて、両係止片３が両係止受け孔４に係止固定されるようになしている。更には、ソケット基部６の背面両側端に背方外側へと略Ｌ字形状に折曲した係止片３を突設し、この係止片３が係止受け孔４の周縁に係止固定されるようにもなしている。
【００３３】
又、この場合に、両係止片３を略同形状に形成し、回動中心となる方の係止受け孔４をこの係止片３が挿入されるように同係止片３と略同形状に形成し、他方の係止受け孔４を同係止片３が挿入される挿入開口部７とこの挿入開口部７に連続して同係止片３が回動される移動開口部８とを有するよう同係止片３よりも大形状に形成している。
【００３４】
又、ソケット１の背面に位置決め凸起９を形成し、回動されて両係止片３が両係止受け孔４に係止固定された状態（図２の状態）で、この位置決め凸起９が係止される位置決め凹部10をソケット固定板２に形成しており、同位置決め凸起９を押圧されることで弾性に抗して引っ込むように突設している。更には、ソケット固定板２に当止片11を突設し、回動されて両係止片３が両係止受け孔４に係止固定された状態（図２の状態）で、ソケット１の外縁端が同当止片11で当止されるようにもなしている。
【００３５】
以下、この実施形態のランプソケット取付構造を、より詳細に説明する。この実施形態のランプソケット取付構造では、照明器具が天井面内に施工される埋め込み型のものである。そして、図３に示す如く、照明器具本体Ｈは下方に開口した横長矩形状の箱型であり、その内部に二本の直管ランプＬが長手方向に沿って並設収容される。直管ランプＬはその両端に端部口金部L1が配設された細長い蛍光灯であり、両端部口金部L1がソケット１に各々嵌合接続されて照明器具本体Ｈ内に設置され、同ソケット１に着脱させることで取り替えられるものである。
【００３６】
照明器具本体Ｈの両端にはエンドカバー12が配設されており、両エンドカバー12の内側部分にはソケット固定板２が形成され、このソケット固定板２の内側面にソケット１が取着固定される。両ソケット１はソケット固定板２の両側対称位置に配設されており、図４、５にも示す如く、照明器具本体Ｈの中程にセンター反射板13ａ、両側にサイド反射板13ｂが配設固定されている。又、センター反射板13ａの裏側にはインバータ14が収容設置されており、このインバータ14等の点灯機器とソケット１のソケット基部６とは配線により電気的に接続される。
【００３７】
照明器具本体Ｈの両端に配設されるのエンドカバー12の一方のソケット固定板２には可動側のソケット１が取着固定され（図３向かって左側）、他方のソケット固定板２には固定側のソケット１が取着固定される（図３向かって右側）。可動側のソケット１を図６〜１０に示し、固定側のソケット１を図１１、１２に示している。
【００３８】
図６〜１０に示す如く、可動側のソケット１は略円筒状のソケット嵌合部５の外周にソケット基部６を突設して形成されており、同ソケット嵌合部５には出没可能なプランジャ15が弾発付勢されて突出され、同ソケット基部６の端面には対の電線挿入孔16が穿設され、このソケット基部６の背面両側端に背方外側へと略Ｌ字形状に折曲した係止片３が配置突設されている。そして、直管ランプＬの一方の端部口金部L1をプランジャ15に嵌合接続させてこれを押し込んだ状態で、後記固定側のソケット１のソケット嵌合部５に同直管ランプＬの他方の端部口金部L1を嵌合接続することができる。
【００３９】
可動側のソケット１の内部には、前記プランジャ15の他、端子カバー17、接触子18、対のコイルスプリング19、対の連結端子20を有する導電板21、等の部材が収容設置され、背面カバー22によって同内部の空間は閉塞される。この場合、前記電線挿入孔16から挿入される電線は、端子カバー17を通して導電板21の連結端子20に接続される。又、ソケット嵌合部５に嵌合接続される直管ランプＬの端部口金部L1に突設された端子は、接触子18、コイルスプリング19等を介して導電板21と電気的に接続される。
【００４０】
可動側のソケット１の背面に嵌着固定される前記背面カバー22は合成樹脂にて形成されたもので、そのソケット嵌合部５側の周縁付近に位置決め凸起９が突設されている。ここでは、三辺周囲にスリットを形成することで背面カバー22に弾性片部23が設けられ、この弾性片部23の表面に位置決め凸起９を一体に突出形成している。位置決め凸起９は、押圧されることで弾性片部23の弾性に抗して背面カバー22の裏側へ引っ込むものであり、押圧が解除されると同弾性片部23の弾性復元力によって表側へ突出される。
【００４１】
図１１、１２に示す如く、固定側のソケット１も略円筒状のソケット嵌合部５の外周にソケット基部６を突設して形成されており、プランジャ15が設けられない点及びコイルスプリング19が短く形成される点を除けば、前記可動側のソケット１と同様に構成されているので、ここではその詳細な説明を省略する。この固定側のソケット１のソケット嵌合部５には、直管ランプＬの一方の端部口金部L1を前記可動側のソケット１のプランジャ15に嵌合接続させてこれを押し込んだ状態で、同直管ランプＬの他方の端部口金部L1が嵌合接続される。
【００４２】
そして、可動側及び固定側のソケット１はいずれも、図１、２に示す如く、ソケット固定板２に対して同ソケット１を矢印方向に回動させることで取着固定される。この場合、まず、図１（ｂ）に示す如く、ソケット１を若干斜めにしながら回動中心となる下側の係止片３を係止受け孔４に挿入した後、上側の係止片３を係止受け孔４の挿入開口部７に挿入する。
【００４３】
次に、図１（ａ）に示す如く、下側の係止片３と係止受け孔４との係止部位Ｋを略中心としてソケット１を矢印方向に回動させると、図２に示す如く、同下側の係止片３が係止受け孔４の周縁に係止固定されると共に、上側の係止片３が係止受け孔４の挿入開口部７から移動開口部８へと斜め下方へと回動してこの移動開口部８の周端縁に係止固定される。
【００４４】
ソケット１が回動されている際、このソケット１の背面はソケット固定板２の表面に摺接されるが、ここでは、その摺接面積が略扇形状となって図１５に示した従来例では略長方形状となるのに比して小さくなり、その際の摩擦抵抗は低減される。しかも、位置決め凸起９は弾性片部23と共に引っ込み、この弾性片部23の弾性復元力により同位置決め凸起９がソケット固定板２の表面に弾性的に摺接して、ソケット１は安定した状態でスムーズに回動される。
【００４５】
そして、図２に示す如く、両係止片３が両係止受け孔４に係止固定されてソケット１の回動が停止されると、前記位置決め凸起９がソケット固定板２の位置決め凹部10に係止され、このソケット固定板２に突設される当止片11に同ソケット１のソケット基部６の外縁端が当止される。この場合、ソケット１が回動される上下方向での寸法範囲Ｔは小さく、照明器具本体Ｈを薄型にしてその内部に同ソケット１をコンパクトに収容設置することができる。又、位置決め凹部10がソケット固定板２に貫通孔を穿設して形成され、当止片11は同ソケット固定板２に切り起こし加工を施して形成されている。
【００４６】
なお、前記位置決め凹部10は、ソケット固定板２を貫通することなく凹ませて形成されても良いものであり、又、前記当止片11は、弾性変形可能なものであって、ソケット１が回動される際にはこのソケット１の背面に対して弾性的に摺接されるものであるが、同ソケット１を回動させた後に塑性変形されて後加工で突設されるものであっても良いものである。又、この実施形態のランプソケット取付構造では、ソケット１のソケット嵌合部５及びソケット基部６の外殻部分が合成樹脂にて一体に形成され、ソケット固定板２は金属薄板で形成されている。
【００４７】
したがって、この実施形態のランプソケット取付構造においては、ソケット１の背面両側に係止片３が突設され、この両係止片３に対応した間隔でソケット固定板２には対の係止受け孔４が穿設されており、このソケット１を照明器具本体Ｈの端部内側で同ソケット固定板２に取り付けるに際し、一方の係止受け孔４に係止片３を係止させた状態で、この係止部位Ｋを略中心として他方の係止受け孔４に係止される係止片３を回動させることにより、両係止片３は両係止受け孔４に係止固定される。それ故、直管ランプＬ用のソケット１が照明器具本体Ｈのソケット固定板２に対して簡単且つ確実強固に取付支持される。
【００４８】
すなわち、両係止片３を両係止受け孔４に挿入した後は、一方の係止片３と係止受け孔４との係止部位Ｋを略中心としてソケット１を回動させることで、両係止片３が両係止受け孔４に係止固定され、その際、両係止片３は平行移動される（図１５に示した従来例）より回転移動される方が容易に動作され、しかも、同ソケット１の背面とソケット固定板２との相互間での摺接面積は小さくなって摩擦抵抗が低減される。それ故、ソケット１はソケット固定板２に対して簡単に取り付けられ、同ソケット１が回動されて取り付けられるので、そのためのスペースも小さくなる。
【００４９】
又、前記回動中心となる方の係止受け孔４は係止片３を移動させるために長く形成されることがなくなり、ソケット固定板２は同係止受け孔４が小さくなって強固なものとなると共に、前記係止片３は弾性変形する必要がなく強固なものとして形成されている。それ故、ソケット１はソケット固定板２に対し確実強固に支持される。更に、ソケット１は直管ランプＬ用であり、ランプ交換時等にランプ軸方向の力が同ソケット１にかかっても、このソケット１の背面側のソケット固定板２で受けられて破損は防止される。
【００５０】
又、この実施形態のランプソケット取付構造においては、略円筒状のソケット嵌合部５の外周にソケット基部６が突設されてソケット１は形成され、同ソケット基部６の背面両側に係止片３が突設されるので、このソケット基部６側を中心側とし同ソケット嵌合部５側を移動側として同ソケット１を回動させることができ、比較的小さなモーメント力で回動させて両係止片３を両係止受け孔４に係止固定することができ、その際、電源供給の配線側となる同ソケット基部６の移動も少なくなる。
【００５１】
しかも、この場合に、ソケット基部６とソケット嵌合部５とが略水平となる状態からこのソケット嵌合部５が下方へ傾くようにソケット１は回動され、移動側の係止片３が斜め下方へと回動されて係止受け孔４に係止固定されるので、この係止受け孔４に対して同移動側の係止片３は、同ソケット１やこれに接続保持される直管ランプＬ等の重力によって、斜め上方へ抜け外れないよう確実に係止固定される。
【００５２】
更に、この場合に、係止片３が略Ｌ字形状でソケット基部６の背面両側端から背方外側へと突出するので、同係止片３を係止受け孔４に正面側から目視しながら容易に挿入することができ、しかも、同係止片３と係止受け孔４との係止部位が両側に間隔をあけて配置されることになるため、ソケット１はソケット固定板２に対して安定した状態で取着固定される。
【００５３】
又、この実施形態のランプソケット取付構造においては、係止片３と略同形状に形成された係止受け孔４で同係止片３が大きくずれ動くことなく回動され、このずれ動き難い係止部位Ｋを回動中心として、他方の係止片３は他方の係止受け孔４の挿入開口部７から移動開口部８へとスムーズに回動され、この移動開口部８の端縁にて確実に係止固定される。
【００５４】
又、この実施形態のランプソケット取付構造において、ソケット１が回動されて両係止片３が両係止受け孔４に係止固定された状態では、同ソケット１背面に形成された位置決め凸起９がソケット固定板２に形成された位置決め凹部10に係止されるので、このソケット１は同ソケット固定板２に対して正確な位置で取着固定される。しかも、位置決め凸起９は押圧されることで弾性に抗し引っ込むように突設されているので、ソケット１が回動される際、このソケット１の背面で同位置決め凸起９は押圧され弾性に抗して引っ込み、抵抗少なく且つ同弾性によりがたつかないよう安定した状態で同ソケット１がスムーズに回動される。
【００５５】
又、この実施形態のランプソケット取付構造において、ソケット１が回動されて両係止片３が両係止受け孔４に係止固定された状態では、ソケット固定板２に突設された当止片11に同ソケット１の外縁端が当止されるので、このソケット１は同ソケット固定板２に対して所定位置でより確実強固に取着固定される。
【００５６】
【発明の効果】
上述の如く、本発明の請求項１記載のランプソケット取付構造においては、ソケットが回動されることで摩擦抵抗少なくソケット固定板に対して簡単に取り付けられ、そのためのスペースも小さくなる。しかも、ソケット固定板は一方の係止受け孔が小さくなって強固となり、係止片も弾性変形を要さず強固に形成されて、ソケットは同ソケット固定板に対して確実強固に支持される。更には、ソケットにランプ軸方向の力がかかっても、その背面側のソケット固定板で受けられて同ランプ軸方向の力による破損は防止される。
【００５７】
又、本発明の請求項２記載のランプソケット取付構造においては、特に、ソケットを比較的小さなモーメント力で回動させて両係止片を両係止受け孔に係止固定することができ、その際、配線側となるソケット基部の移動も少なくなる。
【００５８】
又、本発明の請求項３記載のランプソケット取付構造においては、特に、移動側の係止片が係止受け孔に対し、ソケットやこれに接続保持される直管ランプ等の重力によって、斜め上方へ抜け外れないよう確実に係止固定される。
【００５９】
又、本発明の請求項４記載のランプソケット取付構造においては、特に、係止片を係止受け孔に目視しながら容易に挿入することができ、同係止片と係止受け孔との係止部位は両側に間隔をあけて配置されることにもなって、ソケットがソケット固定板に対して安定した状態で取着固定される。
【００６０】
又、本発明の請求項５記載のランプソケット取付構造においては、特に、ずれ動き難い一方の係止部位を回動中心として、他方の係止片が他方の係止受け孔の挿入開口部から移動開口部へとスムーズに回動され、この移動開口部の端縁にて確実に係止固定される。
【００６１】
又、本発明の請求項６記載のランプソケット取付構造においては、特に、位置決め凸起が位置決め凹部に係止されて、ソケットはソケット固定板に対して正確な位置で取着固定され、しかも、この位置決め凸起が弾性に抗し引っ込んで、同ソケットは抵抗少なく安定した状態でスムーズに回動される。
【００６２】
又、本発明の請求項７記載のランプソケット取付構造においては、特に、ソケットの外縁端が当止片に当止されて、同ソケットはソケット固定板に対して所定位置でより確実強固に取着固定される。
【図面の簡単な説明】
【図１】本発明の一実施形態であるランプソケット取付構造において、取付作業の際にソケットが略水平となる状態の要部を示し、（ａ）はその概略正面図、（ｂ）は（ａ）におけるＡ矢視図。
【図２】同ランプソケット取付構造において、ソケットが回動されて傾斜した取付状態の要部を示し、（ａ）はその概略正面図、（ｂ）は（ａ）におけるＡ矢視図。
【図３】同ランプソケット取付構造が備わった照明器具全体を示す底面図。
【図４】図３におけるＸ−Ｘ断面図。
【図５】図４におけるＹ−Ｙ断面図。
【図６】同ランプソケット取付構造における可動側のソケットを示す斜め前方からみた斜視図。
【図７】同可動側のソケットを示す斜め背方からみた斜視図。
【図８】同可動側のソケットを示す分解斜視図。
【図９】同可動側のソケットを示し、（ａ）その正面図、（ｂ）はその側面図、（ｃ）はその背面図。
【図１０】図９（ｃ）におけるＺ−Ｚ断面図。
【図１１】同ランプソケット取付構造における固定側のソケットを示す斜め前方からみた斜視図。
【図１２】同固定側のソケットを示す分解斜視図。
【図１３】従来例であるランプソケット取付構造を示す要部縦断面図。
【図１４】同ランプソケット取付構造におけるソケットを示す正面図。
【図１５】同ランプソケット取付構造におけるソケット固定板を示す正面図。
【符号の説明】
１ソケット
２ソケット固定板
３係止片
４係止受け孔
５ソケット嵌合部
６ソケット基部
７挿入開口部
８移動開口部
９位置決め凸起
10 位置決め凹部
11 当止片
Ｌ直管ランプ
L1 端部口金部
L2 端部口金部
Ｈ照明器具本体
Ｋ係止部位[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lamp socket mounting structure in which a socket to which an end cap portion of a straight tube lamp is detachably fitted and connected is attached to a socket fixing plate inside an end portion of a lighting fixture body.
[0002]
[Prior art]
Conventionally, as disclosed in JP-A-8-167461, a lamp socket mounting in which a socket to which an end cap portion of a straight tube lamp is detachably fitted and connected is attached to a socket fixing plate inside an end portion of a lighting fixture body The structure is known. In this case, an elastic locking piece protrudes from the back of the socket, and this locking piece is inserted and fitted into a locking receiving hole formed in the socket fixing plate, so that the socket fixing plate has the same socket. It is for attaching and fixing. Therefore, in this case, the socket can be easily attached and fixed to the socket fixing plate.
[0003]
However, in this case, since the locking piece is elastically deformed and inserted and fitted into the locking receiving hole, the locking piece is formed thin to facilitate elastic deformation, and the socket is attached and supported. The strength to do is low. Further, if the locking piece is made strong in order to increase the mounting support strength, it becomes difficult to insert and fit the locking piece into the locking receiving hole, and the mounting work becomes difficult. Moreover, in order to facilitate elastic deformation of the locking piece, it is necessary to make this locking piece protrude long toward the back of the socket, and the locking piece inserted through the locking receiving hole is the back of the socket fixing plate. Therefore, a large mounting space is required on the back side of the socket fixing plate.
[0004]
Further, as disclosed in Japanese Patent Application Laid-Open No. 2001-250417, a lamp socket mounting structure in which a socket to which an end cap portion of a straight tube lamp is detachably fitted and connected is attached to a socket mounting base inside an end portion of a lighting fixture body. Is also known. In this case, the socket mounting base is attached and fixed to the inside of the vicinity of the end portion of the luminaire main body, and the side face of the socket mounting base is bonded and fixed to the side face instead of the back face of the socket. Therefore, in this case, the socket can be firmly attached and fixed via the socket mount on the inner side of the end portion of the luminaire body.
[0005]
However, in this case, it is necessary to attach and fix the socket mounting base to the luminaire main body, and to fix the socket to the socket mounting base. It is expensive. Moreover, since the side of the socket, not the back, is fixed to the socket mounting base (self-supporting socket), when the straight tube lamp is attached to or detached from the socket, the socket receives a force in the lamp axial direction. Thus, the fixed base portion is swung around the fixed base portion, and the fixed base portion is easily damaged by long-term use.
[0006]
[Patent Document 1]
JP-A-8-167461
[0007]
[Patent Document 2]
JP 2001-250417 A
[0008]
[Problems to be solved by the invention]
Therefore, as shown in FIGS. 13 to 15, a lamp socket mounting structure has been conceived in which the back side of the socket 1 is slid and fixed to the socket fixing plate 2. In this case, the locking pieces 3 protrude from both sides of the back surface of the socket 1, and a pair of locking receiving holes 4 are formed in the socket fixing plate 2 at intervals corresponding to the both locking pieces 3. 3 is inserted into both locking receiving holes 4 and is slid downward to be locked and fixed.
[0009]
Here, as shown in FIG. 15, each of the latch receiving holes 4 has a wide portion that serves as an insertion portion on each upper side and a narrow portion that serves as a fixed portion on each lower side. The two locking pieces 3 are inserted at the wide portion and slid downward, and are locked and fixed to the locking receiving holes 4 at the narrow portion. Further, a positioning protrusion 9 is formed on the back surface of the socket 1, and the positioning protrusion 9 is locked in a state in which the locking protrusion 3 is locked and fixed in both the locking receiving holes 4 by sliding downward. The positioning recess 10 is also formed in the socket fixing plate 2.
[0010]
Therefore, in this case, the socket 1 can be easily fixed to the socket fixing plate 2 simply by inserting both the locking pieces 3 into the both locking receiving holes 4 and sliding the socket 1 downward. In this case, both the locking pieces 3 are firmly formed without requiring elasticity, and the mounting support strength is maintained. Moreover, the force in the lamp axis direction applied to the socket 1 is received by the socket fixing plate 2 on the back side thereof, and the socket 1 is difficult to swing in the lamp axis direction, and breakage at the mounting and fixing portion is prevented.
[0011]
Further, in this case, since the locking piece 3 is slid downward, the locking piece 3 is locked and fixed to the periphery of the locking receiving hole 4, so that the locking piece 3 is long toward the back of the socket fixing plate 2. It is formed so as not to protrude, and a large mounting space is not required on the back side of the socket fixing plate 2. Further, the positioning protrusion 9 is locked to the positioning recess 10, and the socket 1 is fixedly attached to the socket fixing plate 2 at an accurate position.
[0012]
However, in this case, since both the latch receiving holes 4 are formed large as long holes (the same dimension t) that are long in the vertical direction, the strength of the socket fixing plate 2 is reduced, and the strength for supporting the socket 1 is sufficient. Is not secured. In addition, it is difficult to slide both locking pieces 3 straightly in a state where both locking pieces 3 are inserted into both locking receiving holes 4, and the frictional resistance between the socket 1 and the socket fixing plate 2 at that time also increases. It is difficult to say that the mounting operation of the socket 1 is simple enough.
[0013]
The present invention was invented in order to solve the above-described problems in the prior art, and the problem was that the socket for the straight tube lamp was easily and securely attached and supported to the luminaire body. It is to provide a mounting structure.
[0014]
[Means for Solving the Problems]
A lamp socket mounting structure according to claim 1 of the present invention is a lamp socket in which a socket to which an end cap portion of a straight tube lamp is detachably fitted and connected is attached to a socket fixing plate inside an end portion of a lighting fixture body. The mounting structure has a locking piece projecting on both sides of the back surface of the socket, and a pair of locking receiving holes are formed in the socket fixing plate at intervals corresponding to the both locking pieces. In a state where the locking pieces are locked to each other, by turning the locking piece locked to the other locking receiving hole about the locking portion as the center, both the locking pieces are received. Locked and fixed in the hole.
[0015]
Therefore, in this case, locking pieces project from both sides of the back surface of the socket, and a pair of locking receiving holes are formed in the socket fixing plate at intervals corresponding to the both locking pieces. When attaching to the socket fixing plate inside the end of the instrument body, with the locking piece locked in one locking receiving hole, lock to the other locking receiving hole with the locking part as the center. By rotating the latching piece, the latching pieces are latched and fixed in the latching receiving holes. Therefore, the socket for the straight tube lamp is easily and securely attached and supported to the socket fixing plate of the luminaire main body.
[0016]
That is, after inserting both the locking pieces into both the locking receiving holes, the sockets are rotated by rotating the socket about the locking portion between the one locking piece and the locking receiving hole. The locking pieces are locked and fixed in both locking receiving holes, and in this case, the locking pieces are operated more easily when they are rotationally moved than between the parallel movements, and between the back surface of the socket and the socket fixing plate. The sliding contact area is reduced and the frictional resistance is reduced. Therefore, the socket is easily attached to the socket fixing plate, and the socket is rotated and attached, so that a space for it is also reduced.
[0017]
In addition, the locking receiving hole which is the center of rotation is not formed long to move the locking piece, and the socket fixing plate becomes smaller and stronger, and the socket receiving plate becomes stronger. The locking piece does not need to be elastically deformed and is formed to be strong. Therefore, the socket is securely supported with respect to the socket fixing plate. Further, the socket is for a straight tube lamp, and even when a lamp axial force is applied to the socket during lamp replacement or the like, it is received by the socket fixing plate on the back side of the socket and is prevented from being damaged.
[0018]
The lamp socket mounting structure according to claim 2 of the present invention is the lamp socket mounting structure according to claim 1, wherein the end cap portion of the straight tube lamp is detachably fitted and connected. A socket base is provided on the outer periphery of the socket to form a socket, and locking pieces are provided on both sides of the back surface of the socket base.
[0019]
Therefore, in this case, in particular, the socket base is protruded on the outer periphery of the substantially cylindrical socket fitting portion to form a socket, and the locking pieces are protruded on both sides of the back surface of the socket base. The socket can be rotated with the side as the center side and the socket fitting part side as the moving side, and both the locking pieces are locked and fixed to the both locking receiving holes by rotating with a relatively small moment force. In this case, the movement of the socket base on the power supply wiring side is also reduced.
[0020]
A lamp socket mounting structure according to a third aspect of the present invention is the lamp socket mounting structure according to the second aspect, wherein the socket fitting portion is formed from a state in which the socket fitting portion and the socket base portion are substantially horizontal. By turning to tilt downward, the locking piece locked in the other locking receiving hole is turned diagonally downward, and both locking pieces are locked and fixed in both locking receiving holes. It is characterized by what has been done.
[0021]
Therefore, in this case, in particular, the socket is rotated so that the socket fitting portion is inclined downward from the state in which the socket base portion and the socket fitting portion are substantially horizontal, and the moving side locking piece is inclined obliquely downward. Since it is rotated and locked in the locking receiving hole, the locking piece on the same movement side with respect to the locking receiving hole is caused by the gravity of the straight tube lamp or the like connected to and held in the same socket. It is securely locked and fixed so that it does not come off obliquely upward.
[0022]
A lamp socket mounting structure according to a fourth aspect of the present invention is the lamp socket mounting structure according to the second or third aspect, wherein the latch base is bent in a substantially L shape outwardly from the back on both sides of the back surface of the socket base. A piece is protruded, and this locking piece is locked and fixed to the periphery of the locking receiving hole.
[0023]
Therefore, especially in this case, since the locking piece is substantially L-shaped and protrudes from the both sides of the back surface of the socket base toward the back side, the locking piece can be easily inserted while visually observing the locking receiving hole. In addition, since the locking portions of the locking piece and the locking receiving hole are arranged at intervals on both sides, the socket is fixedly attached to the socket fixing plate in a stable state. The
[0024]
The lamp socket mounting structure according to claim 5 of the present invention is the lamp socket mounting structure according to any one of claims 1 to 4, wherein both locking pieces are formed in substantially the same shape, The other locking receiving hole is formed in substantially the same shape as the locking piece so that the locking piece is inserted, and the other locking receiving hole is inserted into the insertion opening portion into which the locking piece is inserted and the It is characterized in that it is formed in a larger shape than the locking piece so as to have a moving opening portion in which the locking piece is rotated continuously to the insertion opening.
[0025]
Therefore, in this case, in particular, the locking piece is rotated without a large shift in the locking receiving hole formed in the substantially same shape as the locking piece, and the locking portion that is difficult to shift is the rotation center, The other locking piece is smoothly rotated from the insertion opening of the other locking receiving hole to the moving opening, and is securely locked and fixed at the edge of the moving opening.
[0026]
A lamp socket mounting structure according to a sixth aspect of the present invention is the lamp socket mounting structure according to any one of the first to fifth aspects, wherein a positioning protrusion is formed on the back surface of the socket, and the both are rotated. In a state where the locking piece is locked and fixed in both the locking receiving holes, a positioning recess for locking the positioning protrusion is formed on the socket fixing plate, and the positioning protrusion is pressed to resist elasticity. And projecting so as to retract.
[0027]
Therefore, in this case, in particular, the positioning protrusion formed on the back surface of the socket is formed on the socket fixing plate in a state where the socket is rotated and both the locking pieces are locked and fixed in the both locking receiving holes. Since it is locked in the positioning recess, this socket is fixedly attached to the socket fixing plate at an accurate position. In addition, since the positioning protrusion is projected so as to resist and retract against the elasticity when it is pressed, the positioning protrusion is pressed against the elasticity when the socket is rotated. The socket is smoothly rotated in a stable state with little retraction, resistance, and rattling.
[0028]
A lamp socket mounting structure according to a seventh aspect of the present invention is the lamp socket mounting structure according to any one of the first to sixth aspects, wherein a stopper piece projects from the socket fixing plate and is rotated. It is characterized in that the outer edge end of the socket is abutted by the retaining piece in a state where both the retaining pieces are latched and fixed in the both retaining receiving holes.
[0029]
Therefore, in this case, in particular, the outer edge of the socket is fixed to the stopper piece protruding from the socket fixing plate in a state where the socket is rotated and both the locking pieces are locked and fixed in the both locking receiving holes. Since it is stopped, the socket is securely fixed and fixed at a predetermined position with respect to the socket fixing plate.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1-12 has shown the lamp socket attachment structure which is one Embodiment corresponding to all 1-7 of this invention. In this lamp socket mounting structure, as shown in FIG. 3, a socket 1 in which an end cap L1 of a straight tube lamp L is detachably fitted and connected is mounted on a socket fixing plate 2 inside an end of a lighting fixture body H. It becomes. As shown in FIGS. 1 and 2, locking pieces 3 project from both sides of the socket 1, and a pair of locking receiving holes 4 are formed in the socket fixing plate 2 at intervals corresponding to the locking pieces 3. In a state where the locking piece 3 is locked in one locking receiving hole 4, the locking piece 3 locked in the other locking receiving hole 4 is rotated about the locking portion K as a center. By moving, both locking pieces 3 are locked and fixed to both locking receiving holes 4.
[0031]
Further, in the lamp socket mounting structure of this embodiment, the socket base 6 is projected from the outer periphery of the substantially cylindrical socket fitting portion 5 to which the end cap portion L1 of the straight tube lamp L is detachably fitted and connected. A socket 1 is formed, and locking pieces 3 project from both sides of the back surface of the socket base 6.
[0032]
In this case, as shown in FIG. 1, the socket 1 is rotated so that the socket fitting portion 5 and the socket base portion 6 are tilted downward from the state in which the socket fitting portion 5 and the socket base portion 6 are substantially horizontal. 2, the locking piece 3 locked in the other locking receiving hole 4 is rotated obliquely downward so that both the locking pieces 3 are locked and fixed in the both locking receiving holes 4. It is. Furthermore, a locking piece 3 bent in a substantially L shape outwardly projecting from the back side on both side ends of the back surface of the socket base 6 is projected, and this locking piece 3 is locked and fixed to the periphery of the locking receiving hole 4. It is also being done.
[0033]
Further, in this case, both the locking pieces 3 are formed in substantially the same shape, and the locking receiving hole 4 which is the center of rotation is substantially the same as the locking piece 3 so that the locking piece 3 is inserted. The other locking receiving hole 4 is formed in the same shape, the insertion opening 7 into which the locking piece 3 is inserted, and the moving opening in which the locking piece 3 is rotated continuously to the insertion opening 7 8 is formed in a larger shape than the locking piece 3.
[0034]
Further, a positioning protrusion 9 is formed on the back surface of the socket 1, and the positioning protrusion 9 is rotated in a state where both the locking pieces 3 are locked and fixed to the both locking receiving holes 4 (state shown in FIG. 2). A positioning recess 10 in which 9 is locked is formed in the socket fixing plate 2, and the positioning projection 9 is pressed so as to retract against the elasticity when pressed. Further, the stopper 11 is projected from the socket fixing plate 2 and rotated so that both the locking pieces 3 are locked and fixed to the both locking receiving holes 4 (state shown in FIG. 2). The outer edge of the door is stopped by the stopper piece 11.
[0035]
Hereinafter, the lamp socket mounting structure of this embodiment will be described in more detail. In the lamp socket mounting structure of this embodiment, the lighting fixture is an embedded type constructed in the ceiling surface. And as shown in FIG. 3, the lighting fixture main body H is a horizontally long rectangular box shape opened downward, and two straight tube lamps L are accommodated in parallel along the longitudinal direction. The straight tube lamp L is an elongated fluorescent lamp having end cap portions L1 disposed at both ends thereof, and both end cap portions L1 are respectively fitted and connected to the socket 1 and installed in the luminaire main body H. It can be replaced by attaching and detaching to 1.
[0036]
End covers 12 are disposed at both ends of the luminaire main body H, and socket fixing plates 2 are formed on the inner portions of both end covers 12, and the sockets 1 are fixedly attached to the inner surfaces of the socket fixing plates 2. Is done. Both sockets 1 are disposed at symmetrical positions on both sides of the socket fixing plate 2. As shown in FIGS. 4 and 5, a center reflector 13a is disposed in the middle of the luminaire main body H, and side reflectors 13b are disposed on both sides. It is fixed. An inverter 14 is housed and installed on the back side of the center reflector 13a, and the lighting device such as the inverter 14 and the socket base 6 of the socket 1 are electrically connected by wiring.
[0037]
A movable socket 1 is attached and fixed to one socket fixing plate 2 of the end cover 12 disposed at both ends of the luminaire main body H (left side in FIG. 3), and the other socket fixing plate 2 is fixed to the other socket fixing plate 2. The socket 1 on the fixed side is fixedly attached (right side as viewed in FIG. 3). The movable side socket 1 is shown in FIGS. 6 to 10, and the fixed side socket 1 is shown in FIGS.
[0038]
As shown in FIGS. 6 to 10, the movable socket 1 is formed by projecting a socket base 6 on the outer periphery of a substantially cylindrical socket fitting portion 5, and can be projected and retracted in the socket fitting portion 5. The plunger 15 is elastically biased and protrudes, and a pair of wire insertion holes 16 are formed in the end surface of the socket base 6. A bent locking piece 3 is arranged and protruded. Then, one end cap portion L1 of the straight tube lamp L is fitted and connected to the plunger 15 and pushed in, and the other end of the straight tube lamp L is inserted into the socket fitting portion 5 of the socket 1 on the fixed side described later. The end cap portion L1 can be fitted and connected.
[0039]
In addition to the plunger 15, members such as a terminal cover 17, a contact 18, a pair of coil springs 19, a conductive plate 21 having a pair of connecting terminals 20, and the like are accommodated and installed in the movable socket 1. The internal space is closed by the cover 22. In this case, the electric wire inserted from the electric wire insertion hole 16 is connected to the connection terminal 20 of the conductive plate 21 through the terminal cover 17. Further, the terminal protruding from the end cap L1 of the straight tube lamp L that is fitted and connected to the socket fitting portion 5 is electrically connected to the conductive plate 21 via the contact 18 and the coil spring 19 and the like. Is done.
[0040]
The back cover 22 fitted and fixed to the back surface of the movable socket 1 is made of synthetic resin, and a positioning projection 9 is provided in the vicinity of the peripheral edge on the socket fitting portion 5 side. Here, the back cover 22 is provided with an elastic piece 23 by forming slits around the three sides, and the positioning protrusion 9 is integrally formed on the surface of the elastic piece 23. The positioning protrusion 9 is retracted against the elasticity of the elastic piece portion 23 by being pressed, and retracts to the front side by the elastic restoring force of the elastic piece portion 23 when the pressing is released. Protruding.
[0041]
As shown in FIGS. 11 and 12, the socket 1 on the fixed side is also formed by protruding a socket base 6 on the outer periphery of a substantially cylindrical socket fitting portion 5, and the coil spring 19 is not provided with a plunger 15. Except for the point that is formed short, since it is configured in the same manner as the movable socket 1, the detailed description thereof is omitted here. In the socket fitting portion 5 of the fixed-side socket 1, one end cap portion L1 of the straight tube lamp L is fitted and connected to the plunger 15 of the movable-side socket 1, and this is pushed in, The other end cap portion L1 of the straight tube lamp L is fitted and connected.
[0042]
As shown in FIGS. 1 and 2, both the movable side socket 1 and the fixed side socket 1 are attached and fixed by rotating the socket 1 with respect to the socket fixing plate 2 in the direction of the arrow. In this case, first, as shown in FIG. 1B, the lower locking piece 3 serving as the rotation center is inserted into the locking receiving hole 4 while the socket 1 is slightly inclined, and then the upper locking piece 3 is inserted. Is inserted into the insertion opening 7 of the latch receiving hole 4.
[0043]
Next, as shown in FIG. 1A, when the socket 1 is rotated in the direction of the arrow about the locking portion K between the lower locking piece 3 and the locking receiving hole 4 as shown in FIG. Thus, the lower locking piece 3 is locked and fixed to the periphery of the locking receiving hole 4, and the upper locking piece 3 moves from the insertion opening 7 of the locking receiving hole 4 to the moving opening 8. It is tilted downward and locked to the peripheral edge of the moving opening 8.
[0044]
When the socket 1 is rotated, the back surface of the socket 1 is slidably contacted with the surface of the socket fixing plate 2. Here, the conventional example shown in FIG. Then, it becomes smaller than the substantially rectangular shape, and the frictional resistance at that time is reduced. Moreover, the positioning protrusion 9 is retracted together with the elastic piece portion 23, and the positioning protrusion 9 is elastically brought into sliding contact with the surface of the socket fixing plate 2 by the elastic restoring force of the elastic piece portion 23, so that the socket 1 is in a stable state. Can be rotated smoothly.
[0045]
Then, as shown in FIG. 2, when the locking pieces 3 are locked and fixed in the locking receiving holes 4 and the rotation of the socket 1 is stopped, the positioning protrusion 9 becomes the positioning concave portion of the socket fixing plate 2. 10, the outer edge of the socket base 6 of the socket 1 is stopped by the stopper 11 protruding from the socket fixing plate 2. In this case, the dimension range T in the vertical direction in which the socket 1 is rotated is small, and the lighting fixture body H can be made thin so that the socket 1 can be accommodated and installed compactly therein. A positioning recess 10 is formed by drilling a through hole in the socket fixing plate 2, and the stopper piece 11 is formed by cutting and raising the socket fixing plate 2.
[0046]
The positioning recess 10 may be formed by being recessed without penetrating the socket fixing plate 2, and the stopper piece 11 is elastically deformable. When the socket 1 is rotated, it is elastically slidably contacted with the back surface of the socket 1. However, after the socket 1 is rotated, it is plastically deformed and protruded by post-processing. It is good. In the lamp socket mounting structure of this embodiment, the socket fitting portion 5 of the socket 1 and the outer shell portion of the socket base portion 6 are integrally formed of synthetic resin, and the socket fixing plate 2 is formed of a thin metal plate. .
[0047]
Therefore, in the lamp socket mounting structure of this embodiment, the locking pieces 3 protrude from the both sides of the back surface of the socket 1, and the socket fixing plate 2 has a pair of locking receivers at intervals corresponding to the both locking pieces 3. When the socket 1 is attached to the socket fixing plate 2 inside the end portion of the luminaire main body H, the locking piece 3 is locked in the one locking receiving hole 4. By rotating the locking piece 3 locked to the other locking receiving hole 4 about the locking portion K as a center, both the locking pieces 3 are locked and fixed to the both locking receiving holes 4. The Therefore, the socket 1 for the straight tube lamp L is easily and securely attached and supported to the socket fixing plate 2 of the lighting fixture body H.
[0048]
That is, after inserting both the locking pieces 3 into the both locking receiving holes 4, the socket 1 is rotated about the locking portion K between the one locking piece 3 and the locking receiving hole 4. Both the locking pieces 3 are locked and fixed in the both locking receiving holes 4, and at this time, both the locking pieces 3 are more easily rotated and moved than the parallel movement (conventional example shown in FIG. 15). In addition, the sliding contact area between the back surface of the socket 1 and the socket fixing plate 2 is reduced, and the frictional resistance is reduced. Therefore, the socket 1 can be easily attached to the socket fixing plate 2, and the socket 1 is attached by being rotated, so that the space for that is also reduced.
[0049]
Further, the locking receiving hole 4 which is the center of rotation is not formed long in order to move the locking piece 3, and the socket fixing plate 2 is strong because the locking receiving hole 4 becomes small. In addition, the locking piece 3 does not need to be elastically deformed and is formed to be strong. Therefore, the socket 1 is reliably and firmly supported with respect to the socket fixing plate 2. Further, the socket 1 is for a straight tube lamp L. Even when a lamp axial force is applied to the socket 1 when the lamp is replaced, the socket 1 is received by the socket fixing plate 2 on the back side of the socket 1 to prevent damage. Is done.
[0050]
Further, in the lamp socket mounting structure of this embodiment, the socket base 6 is formed on the outer periphery of the substantially cylindrical socket fitting portion 5 to form the socket 1, and the locking pieces are formed on both sides of the back surface of the socket base 6. 3 is protruded, the socket 1 can be rotated with the socket base 6 side as the center side and the socket fitting portion 5 side as the moving side, and both sockets can be rotated with a relatively small moment force. The locking piece 3 can be locked and fixed in both the locking receiving holes 4, and at this time, the movement of the socket base 6 on the power supply wiring side is also reduced.
[0051]
In addition, in this case, the socket 1 is rotated so that the socket fitting portion 5 is tilted downward from the state in which the socket base portion 6 and the socket fitting portion 5 are substantially horizontal, and the locking piece 3 on the moving side is The locking piece 3 on the same moving side with respect to the locking receiving hole 4 is connected and held to the socket 1 and the locking receiving hole 4 because the locking receiving hole 4 is locked and fixed to the locking receiving hole 4. The straight tube lamp L or the like is securely locked and fixed so as not to come off obliquely upward due to gravity.
[0052]
Further, in this case, since the locking piece 3 is substantially L-shaped and protrudes from the both sides of the back surface of the socket base 6 to the back side, the locking piece 3 is visually observed from the front side in the locking receiving hole 4. However, since the locking portions of the locking piece 3 and the locking receiving hole 4 are arranged at intervals on both sides, the socket 1 is attached to the socket fixing plate 2. On the other hand, it is fixed and fixed in a stable state.
[0053]
Further, in the lamp socket mounting structure of this embodiment, the locking piece 3 is rotated without being largely displaced by the locking receiving hole 4 formed substantially in the same shape as the locking piece 3, and this displacement movement is difficult. The other locking piece 3 is smoothly rotated from the insertion opening 7 to the moving opening 8 of the other locking receiving hole 4 with the locking portion K as the rotation center. Is securely locked.
[0054]
In the lamp socket mounting structure of this embodiment, when the socket 1 is rotated and the both locking pieces 3 are locked and fixed to the both locking receiving holes 4, the positioning projection formed on the back surface of the socket 1 is provided. Since the protrusion 9 is locked in the positioning recess 10 formed in the socket fixing plate 2, the socket 1 is fixedly attached to the socket fixing plate 2 at an accurate position. In addition, since the positioning protrusion 9 is protruded so as to be retracted against elasticity by being pressed, the positioning protrusion 9 is pressed and elastic on the back surface of the socket 1 when the socket 1 is rotated. The socket 1 is smoothly rotated in a stable state so that it is retracted against resistance to the resistance and does not rattle due to the same elasticity.
[0055]
Further, in the lamp socket mounting structure of this embodiment, when the socket 1 is rotated and the both locking pieces 3 are locked and fixed to the both locking receiving holes 4, Since the outer edge of the socket 1 is abutted against the stopper 11, the socket 1 is more securely attached and fixed to the socket fixing plate 2 at a predetermined position.
[0056]
【The invention's effect】
As described above, in the lamp socket mounting structure according to the first aspect of the present invention, when the socket is rotated, it is easily mounted on the socket fixing plate with less frictional resistance, and the space for that is also reduced. In addition, the socket fixing plate is strengthened by reducing one of the latch receiving holes, and the locking piece is also formed firmly without requiring elastic deformation, so that the socket is securely supported by the socket fixing plate. . Furthermore, even if a force in the lamp axial direction is applied to the socket, it is received by the socket fixing plate on the back side, and damage due to the force in the lamp axial direction is prevented.
[0057]
In the lamp socket mounting structure according to claim 2 of the present invention, in particular, both the locking pieces can be locked and fixed to the both locking receiving holes by rotating the socket with a relatively small moment force. At this time, the movement of the socket base on the wiring side is also reduced.
[0058]
In the lamp socket mounting structure according to claim 3 of the present invention, in particular, the locking piece on the moving side is inclined with respect to the locking receiving hole by the gravity of the socket or a straight tube lamp connected and held to the socket. It is securely locked so that it does not come out upward.
[0059]
In the lamp socket mounting structure according to claim 4 of the present invention, in particular, the locking piece can be easily inserted into the locking receiving hole while being visually observed. The locking portions are also arranged on both sides with a space therebetween, so that the socket is fixedly attached to the socket fixing plate in a stable state.
[0060]
Further, in the lamp socket mounting structure according to claim 5 of the present invention, in particular, with the one locking portion that is difficult to shift as the rotation center, the other locking piece extends from the insertion opening of the other locking receiving hole. It is smoothly rotated to the moving opening, and is securely locked and fixed at the edge of the moving opening.
[0061]
Further, in the lamp socket mounting structure according to claim 6 of the present invention, in particular, the positioning protrusion is locked to the positioning recess, and the socket is attached and fixed at an accurate position with respect to the socket fixing plate. This positioning protrusion is retracted against elasticity, and the socket is smoothly rotated in a stable state with little resistance.
[0062]
In the lamp socket mounting structure according to claim 7 of the present invention, in particular, the outer edge of the socket is abutted against the retaining piece, and the socket is more securely attached to the socket fixing plate at a predetermined position. It is fixed.
[Brief description of the drawings]
FIG. 1 shows a main part of a lamp socket mounting structure according to an embodiment of the present invention in a state where the socket is substantially horizontal during mounting work, (a) is a schematic front view thereof, and (b) is (b) A arrow view in a).
FIGS. 2A and 2B show a main part of the mounting state in which the socket is rotated and inclined in the lamp socket mounting structure, FIG. 2A is a schematic front view thereof, and FIG.
FIG. 3 is a bottom view showing an entire lighting fixture having the lamp socket mounting structure.
4 is a sectional view taken along line XX in FIG.
5 is a YY cross-sectional view in FIG. 4;
FIG. 6 is a perspective view of the movable socket in the lamp socket mounting structure as seen obliquely from the front.
FIG. 7 is a perspective view of the socket on the movable side as seen from an oblique back side.
FIG. 8 is an exploded perspective view showing the movable side socket.
9A and 9B show the movable side socket, wherein FIG. 9A is a front view thereof, FIG. 9B is a side view thereof, and FIG. 9C is a rear view thereof.
FIG. 10 is a ZZ cross-sectional view in FIG.
FIG. 11 is a perspective view showing a fixed-side socket in the lamp socket mounting structure as seen obliquely from the front.
FIG. 12 is an exploded perspective view showing the socket on the fixed side.
FIG. 13 is a longitudinal sectional view of an essential part showing a conventional lamp socket mounting structure.
FIG. 14 is a front view showing a socket in the lamp socket mounting structure.
FIG. 15 is a front view showing a socket fixing plate in the lamp socket mounting structure.
[Explanation of symbols]
1 socket
2 Socket fixing plate
3 Locking piece
4 Locking receiving hole
5 Socket fitting part
6 Socket base
7 Insertion opening
8 Moving opening
9 Positioning protrusion
10 Positioning recess
11 Stopper
L Straight tube lamp
L1 end cap
L2 end cap
H Lighting fixture body
K locking part

Claims

A lamp socket mounting structure in which a socket to which an end cap portion of a straight tube lamp is detachably fitted and connected is attached to a socket fixing plate inside an end portion of a luminaire main body. A pair of locking receiving holes are formed in the socket fixing plate at intervals corresponding to both locking pieces, and the locking pieces are locked in one locking receiving hole. A lamp socket mounting structure in which both locking pieces are locked and fixed to both locking receiving holes by rotating a locking piece locked to the other locking receiving hole with the locking part as a center.

A socket base is formed by projecting a socket base on the outer periphery of a substantially cylindrical socket fitting portion to which the end cap portion of the straight tube lamp is detachably fitted and connected, and locking pieces are formed on both sides of the back surface of the socket base. The lamp socket mounting structure according to claim 1, wherein:

A locking piece that is locked to the other locking receiving hole by rotating the socket so that the socket fitting portion is inclined downward from a state in which the socket fitting portion and the socket base portion are substantially horizontal. 3. The lamp socket mounting structure according to claim 2, wherein the locking piece is rotated obliquely downward so that both locking pieces are locked and fixed in both locking receiving holes.

A locking piece bent into a substantially L-shape projecting outward from the back side on both sides of the back surface of the socket base, and this locking piece is locked and fixed to the periphery of the locking receiving hole. The lamp socket mounting structure according to claim 2 or 3, wherein

Both locking pieces are formed in substantially the same shape, and the locking receiving hole that is the center of rotation is formed in substantially the same shape as the locking piece so that this locking piece is inserted, and the other locking piece The receiving hole is formed in a larger shape than the locking piece so as to have an insertion opening into which the locking piece is inserted and a moving opening in which the locking piece is rotated continuously to the insertion opening. The lamp socket mounting structure according to any one of claims 1 to 4, wherein:

A positioning protrusion is formed on the back surface of the socket, and the positioning concave portion to which the positioning protrusion is locked is fixed to the socket fixing plate in a state where both the locking pieces are locked and fixed in the both locking receiving holes. The lamp socket mounting structure according to any one of claims 1 to 5, wherein the lamp socket mounting structure is formed and protruded so as to be retracted against elasticity by pressing the positioning protrusion.

With the stopper piece projecting on the socket fixing plate, the outer edge of the socket is stopped by the stopper piece in a state where both stopper pieces are locked and fixed in the stopper receiving holes. The lamp socket mounting structure according to any one of claims 1 to 6, wherein the lamp socket mounting structure is formed.