JP4003479B2

JP4003479B2 - Lighting device

Info

Publication number: JP4003479B2
Application number: JP2002047487A
Authority: JP
Inventors: 由浩坂下; 薫安宅
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-02-25
Filing date: 2002-02-25
Publication date: 2007-11-07
Anticipated expiration: 2022-02-25
Also published as: JP2003249382A

Description

【０００１】
【発明の属する技術分野】
本発明は、制御部の信号により点灯回路部を通じて光源に対する点灯、消灯などの制御を実行する照明装置に関するものである。
【０００２】
【従来の技術】
従来例のブロック図を図８に示す。商用電源１に接続された照明装置２は、２つの光源６，９を備えている。商用電源１をダイオードＤ１，Ｄ２で全波整流した電圧を通電信号として制御部３の停電検出部４に送り、商用電源１の有無を制御部３が認識しつつ点灯回路部５に点灯信号を発し、光源６の点灯（消灯）状態を制御している。商用電源１の遮断時でも一定時間は電源を供給するように、商用電源１を整流し平滑コンデンサに電荷を蓄積した電源部７が制御部３の動作電源となっている。点灯回路部５内にも同様に平滑コンデンサを用いた構成の電源部８を備える場合もある。通電信号が無くなると、停電検出部４は停電と判別し、光源６を消灯させようと点灯回路部５へ出力信号を停止する。ここで、例えば、光源６に蛍光灯を使い、蛍光灯の短寿命や始動時での不点灯などの不具合を回避する等の目的で、点灯回路部５には「予熱→始動→点灯」等の各モードを持っていることが一般的であり、点灯回路部５が制御部３から点灯信号を受けてから光源６が所定の点灯状態に至るまでにユーザーが違和感を持つ時間がかかる場合がある。
【０００３】
仮に、ノイズや電源の欠相などの本来の停電でないときにも通電信号が無くなってしまったら停電検出部４が停電と判別し、点灯回路部５への出力信号を一旦停止する。その後、すぐに通電信号が復帰して点灯回路部５への出力信号も復帰するが、点灯回路部５において光源６を所定の点灯状態に至らせるまでに時間がかかるため、ユーザーにとっては光源６の状態変化に違和感を持つことになる。その違和感を解消するために、停電検出部４が停電と判別した時点から、点灯回路部５への出力信号を停止させるまでに遅延時間を設定することをこれまでしてきた。
【０００４】
従来例の動作を図１０のフローチャートに示す。光源が点灯すると、停電後の遅延時間Ｔをカウントするためのタイマーをスタートさせる。停電が検知されず、通電状態であれば、遅延時間Ｔをカウントするためのタイマーをリセット（Ｔ＝０）し、制御部３から点灯回路部５への点灯出力をＯＮとする。停電が検知されると、停電検知後、所定の時間Ｔｘが経過するまでは光源６の点灯を維持し、所定の時間Ｔｘが経過した後、制御部３から点灯回路部５への点灯出力をＯＦＦとする。これにより、第１点灯回路部５は動作を停止し、第１の光源６は消灯する。
【０００５】
この遅延時間Ｔｘ以内ならば、通電信号が無くなっても光源６の状態変化は行われず、ユーザーにとっての違和感を無くすことが出来ている。また、ＬＥＤなどの別の光源９が併備されており、その点灯用の電源が商用電源１の供給によるものならば、当然、商用電源１の遮断に連動して光源９は消灯していたので、点灯回路部１０への出力信号を停止させるまでの遅延時間も点灯回路部５への出力信号の停止までの遅延時間Ｔｘと同一でどれも一定であった。
【０００６】
【発明が解決しようとする課題】
ところが、光源９の電源として、図８のように商用電源１を直接供給するものであれば、当然、商用電源１の遮断に連動して光源９は消灯していたので、問題が無かったが、図９のように、光源９の電源として、商用電源１を整流し直流に変換して供給するものがある。図９の従来例では、点灯回路部５内に平滑コンデンサを用いた構成の電源部８を備え、この電源部８から光源９の電源を供給するとともに、制御部３の電源部７から第２点灯回路部１０の電源を供給している。これは、図８の従来例が商用電源１から第２点灯回路部１０および光源９の電源を供給する構成とは異なり、商用電源１が遮断されても、電源部７から第２点灯回路部１０への電源供給は続き、第１点灯回路部５の電源部８から光源９への電源供給も続くから、停電検出部４が停電を検知した後、制御部３が図１０のフローチャートに従い、Ｔｘの遅延時間をカウントして第１点灯回路部５および第２点灯回路部１０への点灯信号を出力停止するまでは、光源９は点灯し続けることになる。したがって、仮にユーザーが照明器具に対する入力電源の停止操作を行った場合でも照明器具は見掛け上、直ちには反応せず、遅れて消灯し、その間は残光が残ることにもなり、ユーザーは違和感を持つことになる。
【０００７】
また、ユーザーがあえて入力電源のＯＮ−ＯＦＦ操作を行うことによって入力電源の有無を信号として点灯状態を切り替えることの出来るようにした照明装置においては、入力電源ＯＦＦ時でも制御部３は動作しなければならず、入力電源ＯＦＦから次の信号である入力電源ＯＮを受け付けることのできる時間は制御部３への電源供給は必要不可欠である。そこで、制御部３の電源部７を光源９のために共用していたら、光源９が点灯し続けてしまうことは、制御部３への電源供給時間の短縮にもなる。
【０００８】
本発明は上述の点に鑑みてなされたもので、その目的とするところは、ユーザーの入力電源停止操作による消灯時において光源の残光による違和感を無くすことのできる照明装置を提供することにある。
【０００９】
【課題を解決するための手段】
請求項１の発明によれば、上記の課題を解決するために、図１に示すように、複数の光源６，９と、前記各光源６，９を点灯させるための各々の点灯回路部５，１０と、前記点灯回路部５，１０へ点灯出力信号を発し、各光源６，９の点灯状態を制御する制御部３と、前記制御部３内に設けられて商用電源１の通電信号にて電源の有無を判別する停電検出部４と、商用電源１の遮断時でも一定時間は電源供給するように商用電源１を整流し平滑コンデンサに蓄積された電源部７，８とを備え、前記制御部３が点灯回路部５，１０へ点灯出力信号を発してから光源６，９が所定の点灯状態に至るまでに要する時間が光源６，９によって異なり、光源が所定の点灯状態に至るまでに要する時間が短い方の光源９は商用電源１の通電信号と連動して（図１ではスイッチ要素Ｑを介して）前記電源部８から電源を供給されており、商用電源１の遮断により通電信号が無くなると、直ちに前記電源部８から電源を供給されている光源９の電源を遮断することを特徴とするものである。
【００１０】
請求項２の発明によれば、同じ課題を解決するために、図２に示すように、複数の光源６，９と、前記各光源６，９を点灯させるための各々の点灯回路部５，１０と、前記点灯回路部５，１０へ点灯出力信号を発し、各光源６，９の点灯状態を制御する制御部３と、前記制御部３内に設けられて商用電源１の通電信号にて電源の有無を判別する停電検出部４と、商用電源１の遮断時でも一定時間は電源供給するように商用電源１を整流し平滑コンデンサに蓄積された電源部７，８とを備え、前記制御部３が点灯回路部５，１０へ点灯出力信号を発してから光源６，９が所定の点灯状態に至るまでに要する時間が光源６，９によって異なり、光源が所定の点灯状態に至るまでに要する時間が短い方の光源９は前記制御部３からの出力信号によって（制御されるスイッチ要素Ｑを介して）前記電源部８から電源を供給されており、商用電源１の遮断により通電信号が無くなると、前記停電検出部４が停電を判別すると直ちに前記制御部３からの出力信号により前記電源部８から電源を供給されている光源９の電源を遮断することを特徴とするものである。
【００１１】
請求項３の発明によれば、同じ課題を解決するために、図３に示すように、複数の光源６，９と、前記各光源６，９を点灯させるための各々の点灯回路部５，１０と、前記点灯回路部５，１０へ点灯出力信号を発し、各光源６，９の点灯状態を制御する制御部３と、前記制御部３内に設けられて商用電源の通電信号にて電源の有無を判別する停電検出部４と、商用電源１の遮断時でも一定時間は電源供給するように商用電源１を整流し平滑コンデンサに蓄積された電源部７，８とを備え、前記制御部３が点灯回路部５，１０へ点灯出力信号を発してから光源６，９が所定の点灯状態に至るまでに要する時間が光源６，９によって異なり、商用電源１の遮断により通電信号が無くなり、前記停電検出部４により停電が判別されてから各光源６，９の点灯回路部５，１０への点灯出力信号を停止させるまでの遅延時間Ｔｘ，Ｔｙを、各光源６，９が所定の点灯状態に至るまでに要する時間Ｔ１，Ｔ２に応じて設定したことを特徴とするものである。
請求項４の発明によれば、請求項１〜３のいずれかに記載の照明装置において、図４に示すように、制御部３の電源と少なくとも１つの光源９の電源が同一であり、該電源は、商用電源１の遮断時でも一定時間は電源供給するように商用電源１を整流し平滑コンデンサに蓄積された電源部７であることを特徴とするものである。
【００１２】
請求項５の発明によれば、請求項３記載の照明装置において、図５に示すように、前記停電検出部４は商用電源１に同期した通電信号にて電源の有無を判別し、前記遅延時間Ｔｘ，Ｔｙは２０ｍｓｅｃ以上と２０ｍｓｅｃ未満の遅延時間をそれぞれ１つ以上設定することを特徴とするものである。図５では、抵抗分圧回路とトランジスタＴｒによりゼロクロス検出回路を構成しており、トランジスタＴｒのコレクタ電位は商用電源１のゼロクロス付近でＨｉｇｈレベルとなるが、電源同期信号の検出回路はこれに限定されるものではない。電源周波数が５０Ｈｚならば電源同期信号は１０ｍｓの周期にて発生する。停電検出部４はこの電源同期信号が無くなると、停電と判別する。
請求項６の発明は、請求項１〜５のいずれかに記載の照明装置を器具本体に設けたことを特徴とするものである。
【００１３】
【発明の実施の形態】
（実施形態１）
本発明の第１の実施形態の構成を図１に示す。商用電源１に接続された照明装置２は、蛍光ランプよりなる第１の光源６と、補助光源としてのＬＥＤよりなる第２の光源９を備えており、第１の光源６は第１点灯回路部５により点灯され、第２の光源９は第２点灯回路部１０により点灯される。第１点灯回路部５は、商用電源１からの入力交流電圧を整流して得た直流電圧をスイッチング素子でスイッチングすることにより高周波に変換して蛍光ランプ６を高周波点灯させる。第２点灯回路部１０は、第１点灯回路部５の直流電圧を降圧してＬＥＤ９の点灯制御を行う。制御部３は第１点灯回路部５および第２点灯回路部１０に点灯信号を出力する。制御部３には商用電源１からダイオードＤ１，Ｄ２を介して得た通電信号にて電源の有無を判別する停電検出部４を備えている。制御部３を動作させるための電源は、商用電源１を整流した電圧で充電される平滑コンデンサからなる電源部７から供給されており、商用電源１の遮断時でも一定時間は制御部３に電源を供給できるようになっている。第１点灯回路部５内にも同様に平滑コンデンサを用いた構成の電源部８を備えている。
【００１４】
商用電源１をダイオードＤ１，Ｄ２で全波整流した電圧を通電信号として制御部３の停電検出部４に送り、商用電源１の有無を制御部３が認識しつつ点灯回路部５に点灯信号を発し、光源６の点灯（消灯）状態を制御している。通電信号が無くなると、停電検出部４は停電と判別し、光源６を消灯させようと点灯回路部５への点灯信号の出力を停止する。
【００１５】
ここで、第１点灯回路部５にて点灯する蛍光ランプ６は、制御部３からの点灯信号を受けてから「予熱→始動→点灯」の各ステップを経て所定の点灯状態となるのに約１秒の時間を有する光源である。第２点灯回路部１０にて点灯するＬＥＤ９は、電源供給と制御部３からの点灯信号があれば所定の点灯状態になる補助光源である。ＬＥＤ９および第２点灯回路部１０に供給する第１点灯回路部５内の電源部８からの電源を、通電信号の有無に応じて供給／遮断する構成にする。商用電源１が遮断されると商用電源１をダイオードＤ１，Ｄ２で全波整流した通電信号が無くなり、スイッチ要素Ｑが開いて、第２点灯回路部５の電源が遮断され、ＬＥＤ９は消灯する。
【００１６】
本実施形態の動作を図６のフローチャートに示す。光源が点灯すると、停電後の遅延時間Ｔをカウントするためのタイマーをスタートさせる。停電が検知されず、通電状態であれば、遅延時間Ｔをカウントするためのタイマーをリセット（Ｔ＝０）し、制御部３から点灯回路部５，１０への点灯出力をＯＮとする。停電が検知されると、まず、点灯回路部が再始動に時間を要さない点灯回路部であれば、光源の電源をＯＦＦとする。すなわち、第２の光源９は消灯とする。また、停電検知されても、点灯回路部が再始動に時間を要する点灯回路部であれば、停電検知後、所定の時間Ｔｘが経過するまでは光源の点灯を維持し、所定の時間Ｔｘが経過した後、制御部３から点灯回路部５への点灯出力をＯＦＦとする。これにより、第１点灯回路部５は動作を停止し、第１の光源６は消灯する。
【００１７】
（実施形態２）
本発明の第２の実施形態の構成を図２に示す。本発明の第１の実施形態の構成とほぼ同じであるが、ＬＥＤ９および第２点灯回路部１０に供給する第１点灯回路部５内の電源部８からの電源を、制御部３の出力信号にて遮断する構成とした。商用電源１が遮断されると通電信号が無くなり、停電検出部４が停電と判別したら制御部３からの出力信号にてスイッチ要素ＱがＯＦＦとなり、第２点灯回路部１０の電源が遮断され、その結果、ＬＥＤ９は消灯する。本実施形態の動作は図６のフローチャートと同様である。
【００１８】
（実施形態３）
本発明の第３の実施形態の構成を図３に示す。本発明の第１の実施形態の構成とほぼ同じであるが、入力電源が遮断されると通電信号が無くなり、停電検出部４が停電と判別したら制御部３からの点灯出力信号を遮断し、光源６，９は消灯する。ただし、停電と判断してから点灯出力信号を遮断するまでの遅延時間は光源６と９とでは異なり、制御部３が点灯回路部５へ点灯出力信号を発してから光源６が所定の点灯状態に至るまでにＴ１の時間を要し、制御部３が点灯回路部１０へ点灯出力信号を発してから光源９が所定の点灯状態に至るまでにＴ２の時間を要するものとすると、Ｔ１＞Ｔ２である。ここで、Ｔ２の時間は光源９がこの時間消灯してもユーザーにとって違和感を持たない時間である。一方、Ｔ１の時間は光源６がこの時間消灯したらユーザーにとって違和感を持ってしまう時間である。
【００１９】
このことから、本実施形態では、制御部３から各点灯回路部５，１０に出力される点灯信号を停電時に遮断させるときの遅延時間を光源別、点灯回路別に設定したものであり、停電と判別してから制御部３が点灯回路部５への点灯出力信号を遮断するまでの遅延時間をＴｘ、制御部３が点灯回路部１０への点灯出力信号を遮断するまでの遅延時間をＴｙとすると、Ｔｘ＞Ｔｙとなるように遅延時間を設定している。すなわち、光源が所定の点灯状態に至るまでの時間が短いときは早く点灯信号を遮断して光源の残光を防ぎ、ユーザーの違和感を無くす。また、欠相やノイズにより瞬間的な停電検知が起きた場合でも点灯信号が復帰した場合に所定の点灯状態に至るまでの時間が短いからユーザーが違和感を感じることはない。
【００２０】
本実施形態の動作を図７のフローチャートに示す。光源が点灯すると、停電後の遅延時間Ｔをカウントするためのタイマーをスタートさせる。停電が検知されず、通電状態であれば、遅延時間Ｔをカウントするためのタイマーをリセット（Ｔ＝０）し、制御部３から点灯回路部５，１０への点灯出力をＯＮとする。停電が検知されると、まず、点灯回路部が再始動に時間Ｔ１を要する点灯回路部であれば、停電検知後、所定の時間Ｔｘが経過するまでは光源の点灯を維持し、所定の時間Ｔｘが経過した後、制御部３から点灯回路部５への点灯出力をＯＦＦとする。これにより、第１点灯回路部５は停電後、所定の時間Ｔｘの経過後に動作を停止し、第１の光源５は消灯する。また、点灯回路部が再始動に時間Ｔ２を要する点灯回路部であれば、停電検知後、所定の時間Ｔｙが経過するまでは光源の点灯を維持し、所定の時間Ｔｙが経過した後、制御部３から点灯回路部１０への点灯出力をＯＦＦとする。これにより、第２点灯回路部１０は停電後、所定の時間Ｔｙの経過後に動作を停止し、第２の光源１０は消灯する。
【００２１】
（実施形態４）
本発明の第４の実施形態の構成を図４に示す。発明の第３の実施形態とほぼ構成は同じであるが、本実施形態では、ＬＥＤなどの光源９の電源を制御部３の電源部７と共用する構成としたものである。すなわち、制御部３と光源９の電源が同一で、商用電源１の遮断時でも一定時間は電源供給するように、商用電源１を整流し平滑コンデンサにて蓄積された電源部７を用いた構成であり、制御部３が動作している間は光源９も点灯可能であるため、停電検出部４で停電判別をすると速やかに光源９を消灯させ、残光を防ぐとともに、商用電源１の遮断時の制御部３の消費電力を減らし、制御部３の動作時間を延ばすようにしたものである。本実施形態の動作は図６又は図７のフローチャートのいずれでも良いが、図７のフローチャートでＴｙ＝０と設定した場合に相当する図６の動作の方が商用電源１の遮断時における制御部３の消費電力を減らし、制御部３の動作時間を延ばす効果は大きい。
【００２２】
（実施形態５）
本発明の第５の実施形態の構成を図５に示す。本実施形態の動作は図７のフローチャートと同様である。本発明の第４の実施形態とほぼ構成は同じであるが、ゼロクロス検出による電源同期信号を通電信号として停電判別を行う点が異なる。制御部３には商用電源１からダイオードＤ１，Ｄ２を介して、電源周波数に同期した通電信号が入り、この通電信号にて停電検出部４は電源の有無を判別するものである。電源周波数に同期した通電信号は、５０Ｈｚならば１０ｍｓの周期にて通電信号が発生する。
【００２３】
制御部３から点灯出力信号を受けてから所定の点灯状態に至るまでの時間がユーザーが違和感をもつ位に長い第１点灯回路部５への遅延時間Ｔｘは２０ｍｓ以上に設定する。このように設定すれば、欠相やノイズなどで電源同期信号が１つ位抜けて停電判断されても再起動に時間のかかる蛍光灯などの光源６は元の状態のままにしておくことができる。また、制御部３から点灯出力信号を受けてから所定の点灯状態に至るまでの時間がユーザーが違和感をもたない位に短い第２点灯回路部１０への遅延時間Ｔｙは２０ｍｓ未満となるように設定する。これにより、欠相やノイズなどで電源同期信号が抜けて停電判断されると、ＬＥＤなどの光源９は消灯させることができる。また、本実施形態では、電源同期信号を通電信号として用いたことで、光源９として白熱球を用いた場合の位相制御にも対応することができ、制御部３の共用化ができる。
【００２４】
【発明の効果】
請求項１の発明は、光源の電源として商用電源を整流し平滑コンデンサにて蓄積された電源を用い、制御部が点灯回路部へ点灯出力信号を発してから光源が所定の点灯状態に至るまでに要する時間がユーザーの違和感を持たないくらい短いならば、停電時に光源の電源を遮断することで消灯させ、停電後の残光を防ぎ、ユーザーの違和感を無くすことができる。
請求項２の発明は、請求項１の発明と同様に、停電後の残光を防ぎ、ユーザーの違和感を無くすことができるとともに、停電時には制御部からの出力信号により光源の電源を遮断することで消灯させるようにしたので、請求項１の発明よりは通電信号の検出のための構成を簡略化できる。
【００２５】
請求項３の発明は、請求項１，２の発明と同様の効果を奏するとともに、制御部から各点灯回路部に出力される点灯信号を停電時に遮断させるときの遅延時間を光源別、点灯回路別に設定したので、請求項１，２の発明に比べると電源を遮断する構成を省くことができる。
請求項４の発明は、請求項１〜３と同様の効果を奏すると共に、光源の電源を制御部の電源と共通にしていることから、停電時での消費電力を抑え、小容量の平滑コンデンサを用いることができ、また、制御部の動作時間を延ばすことができる。
請求項５の発明は、電源同期信号を通電信号として用いたことで、白熱球の位相制御にも対応することができ、制御部の共用化ができる。
【図面の簡単な説明】
【図１】本発明の実施形態１の構成を示すブロック回路図である。
【図２】本発明の実施形態２の構成を示すブロック回路図である。
【図３】本発明の実施形態３の構成を示すブロック回路図である。
【図４】本発明の実施形態４の構成を示すブロック回路図である。
【図５】本発明の実施形態５の構成を示すブロック回路図である。
【図６】本発明の実施形態１，２の動作を示すフローチャートである。
【図７】本発明の実施形態３，４，５の動作を示すフローチャートである。
【図８】従来例１の構成を示すブロック回路図である。
【図９】従来例２の構成を示すブロック回路図である。
【図１０】従来例１，２の動作を示すフローチャートである。
【符号の説明】
１商用電源
２照明装置
３制御部
４停電検出部
５第１点灯回路部
６光源（蛍光灯）
７電源部
８電源部
９光源（ＬＥＤ）
１０第２点灯回路部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an illuminating device that performs control such as turning on and off a light source through a lighting circuit unit according to a signal from a control unit.
[0002]
[Prior art]
A block diagram of a conventional example is shown in FIG. The lighting device 2 connected to the commercial power source 1 includes two light sources 6 and 9. A voltage obtained by full-wave rectification of the commercial power source 1 with the diodes D1 and D2 is sent to the power failure detection unit 4 of the control unit 3 as an energization signal, and a lighting signal is sent to the lighting circuit unit 5 while the control unit 3 recognizes the presence or absence of the commercial power source 1. The light source 6 is controlled to turn on (turn off) the light source 6. The power supply unit 7 that rectifies the commercial power supply 1 and accumulates electric charges in a smoothing capacitor is an operation power supply for the control unit 3 so that the power supply is supplied for a certain time even when the commercial power supply 1 is shut off. Similarly, the lighting circuit unit 5 may include a power supply unit 8 having a configuration using a smoothing capacitor. When the energization signal disappears, the power failure detection unit 4 determines that a power failure has occurred, and stops the output signal to the lighting circuit unit 5 so as to turn off the light source 6. Here, for example, a fluorescent lamp is used as the light source 6 and the lighting circuit unit 5 has “preheating → start → light on” or the like for the purpose of avoiding problems such as short life of the fluorescent lamp and non-lighting at the start. It is common to have each mode, and it may take time for the user to feel uncomfortable until the light source 6 reaches a predetermined lighting state after the lighting circuit unit 5 receives the lighting signal from the control unit 3. is there.
[0003]
If the energization signal disappears even when it is not an original power failure such as noise or a power failure, the power failure detection unit 4 determines that a power failure has occurred, and temporarily stops the output signal to the lighting circuit unit 5. Thereafter, the energization signal is restored immediately, and the output signal to the lighting circuit unit 5 is also restored. However, since it takes time until the lighting circuit unit 5 brings the light source 6 into a predetermined lighting state, the light source 6 for the user. You will feel uncomfortable with the state change. In order to eliminate the sense of incongruity, the delay time has been set until the output signal to the lighting circuit unit 5 is stopped after the power failure detection unit 4 determines that the power failure has occurred.
[0004]
The operation of the conventional example is shown in the flowchart of FIG. When the light source is turned on, a timer for counting the delay time T after a power failure is started. If no power failure is detected and the power is on, the timer for counting the delay time T is reset (T = 0), and the lighting output from the control unit 3 to the lighting circuit unit 5 is turned on. When a power failure is detected, the light source 6 is kept on until a predetermined time Tx elapses after the power failure is detected, and after the predetermined time Tx elapses, the lighting output from the control unit 3 to the lighting circuit unit 5 is output. Set to OFF. Thereby, the 1st lighting circuit part 5 stops operation | movement, and the 1st light source 6 turns off.
[0005]
Within this delay time Tx, even if the energization signal disappears, the state of the light source 6 is not changed, and it is possible to eliminate an uncomfortable feeling for the user. Further, if another light source 9 such as an LED is provided and the power source for lighting is supplied by the commercial power source 1, the light source 9 is naturally turned off in conjunction with the interruption of the commercial power source 1. Therefore, the delay time until the output signal to the lighting circuit unit 10 is stopped is the same as the delay time Tx until the output signal to the lighting circuit unit 5 is stopped, and is constant.
[0006]
[Problems to be solved by the invention]
However, if the commercial power source 1 is directly supplied as the power source of the light source 9 as shown in FIG. 8, the light source 9 is naturally turned off in conjunction with the interruption of the commercial power source 1. As shown in FIG. 9, as a power source for the light source 9, there is one that rectifies the commercial power source 1 and converts it into a direct current. In the conventional example of FIG. 9, the lighting circuit unit 5 includes a power supply unit 8 having a configuration using a smoothing capacitor. The power supply unit 8 supplies power to the light source 9 and the power supply unit 7 of the control unit 3 supplies second power. The power supply of the lighting circuit unit 10 is supplied. This is different from the configuration in which the conventional example of FIG. 8 supplies the power of the second lighting circuit unit 10 and the light source 9 from the commercial power source 1, even if the commercial power source 1 is cut off, the second lighting circuit unit from the power source unit 7. Since the power supply to 10 continues and the power supply from the power supply unit 8 of the first lighting circuit unit 5 to the light source 9 also continues, after the power failure detection unit 4 detects a power failure, the control unit 3 follows the flowchart of FIG. The light source 9 continues to be lit until the delay time of Tx is counted and output of the lighting signals to the first lighting circuit unit 5 and the second lighting circuit unit 10 is stopped. Therefore, even if the user turns off the input power supply to the luminaire, the luminaire apparently does not react immediately, turns off after a delay, and afterglow remains during that time. Will have.
[0007]
In addition, in a lighting device in which the lighting state can be switched with the presence or absence of the input power as a signal by the user's intentional ON / OFF operation of the input power, the control unit 3 must operate even when the input power is OFF. The power supply to the control unit 3 is indispensable for a time during which the input power ON, which is the next signal, can be received from the input power OFF. Therefore, if the power supply unit 7 of the control unit 3 is shared for the light source 9, the light source 9 continues to be turned on also shortens the power supply time to the control unit 3.
[0008]
The present invention has been made in view of the above-described points, and an object of the present invention is to provide an illuminating device that can eliminate a sense of incongruity due to afterglow of a light source when the user turns off an input power supply. .
[0009]
[Means for Solving the Problems]
According to invention of Claim 1, in order to solve said subject, as shown in FIG. 1, each lighting circuit part 5 for making the said light sources 6 and 9 light and each said light sources 6 and 9 is lighted. , 10 and a lighting output signal to the lighting circuit units 5 and 10, a control unit 3 for controlling the lighting state of the light sources 6 and 9, and an energization signal of the commercial power source 1 provided in the control unit 3. A power failure detection unit 4 that determines the presence or absence of a power source, and power source units 7 and 8 that rectify the commercial power source 1 and store them in smoothing capacitors so as to supply power for a certain period of time even when the commercial power source 1 is shut off. The time required for the light sources 6 and 9 to reach a predetermined lighting state after the control unit 3 issues a lighting output signal to the lighting circuit units 5 and 10 varies depending on the light sources 6 and 9, and the light source reaches a predetermined lighting state. The light source 9 that takes less time is linked with the energization signal of the commercial power source 1 When power is supplied from the power supply unit 8 (via the switch element Q in FIG. 1) and the energization signal disappears when the commercial power supply 1 is cut off, the power supply of the light source 9 is immediately supplied with power from the power supply unit 8. It is characterized by blocking.
[0010]
According to the invention of claim 2, in order to solve the same problem, as shown in FIG. 2, a plurality of light sources 6, 9 and each lighting circuit unit 5, for lighting each of the light sources 6, 9 are provided. 10, a lighting output signal to the lighting circuit units 5, 10, a control unit 3 for controlling the lighting state of each light source 6, 9, and an energization signal of the commercial power source 1 provided in the control unit 3 The power failure detection unit 4 for determining the presence or absence of a power source, and the power source units 7 and 8 that rectify the commercial power source 1 and store them in smoothing capacitors so as to supply power for a certain period of time even when the commercial power source 1 is shut off. The time required for the light sources 6 and 9 to reach a predetermined lighting state after the unit 3 issues a lighting output signal to the lighting circuit units 5 and 10 varies depending on the light sources 6 and 9, and the light source reaches a predetermined lighting state. The light source 9 which requires a shorter time is output by the output signal from the control unit 3. When power is supplied from the power supply unit 8 (via the controlled switch element Q) and the energization signal disappears due to the interruption of the commercial power supply 1, the control unit 3 immediately after the power failure detection unit 4 determines a power failure. The power source of the light source 9 supplied with power from the power source unit 8 is cut off by an output signal from the power source 8.
[0011]
According to the invention of claim 3, in order to solve the same problem, as shown in FIG. 3, a plurality of light sources 6, 9 and each lighting circuit unit 5, for lighting each of the light sources 6, 9 are provided. 10, a lighting output signal to the lighting circuit units 5, 10, a control unit 3 that controls the lighting state of each of the light sources 6, 9, and a power source that is provided in the control unit 3 by an energization signal of a commercial power source A power failure detection unit 4 for determining the presence or absence of power, and power supply units 7 and 8 that rectify the commercial power source 1 and store them in smoothing capacitors so as to supply power for a certain period of time even when the commercial power source 1 is shut off. 3 depends on the light sources 6 and 9 until the light sources 6 and 9 reach a predetermined lighting state after the lighting output signals 3 to the lighting circuit units 5 and 10 are emitted. After the power failure is detected by the power failure detection unit 4, each light source 6, The delay times Tx and Ty until the lighting output signals to the lighting circuit units 5 and 10 are stopped are set according to the times T1 and T2 required for the light sources 6 and 9 to reach a predetermined lighting state. It is a feature.
According to the invention of claim 4, in the illumination device according to any one of claims 1 to 3, as shown in FIG. 4, the power source of the control unit 3 and the power source of at least one light source 9 are the same, The power source is a power source unit 7 that rectifies the commercial power source 1 and stores it in a smoothing capacitor so that the power source is supplied for a predetermined time even when the commercial power source 1 is shut off.
[0012]
According to the invention of claim 5, in the illumination device according to claim 3, as shown in FIG. 5, the power failure detection unit 4 determines the presence or absence of a power source by an energization signal synchronized with a commercial power source 1, and the delay The times Tx and Ty are characterized by setting one or more delay times of 20 msec or more and less than 20 msec, respectively. In FIG. 5, a resistor voltage dividing circuit and a transistor Tr constitute a zero-cross detection circuit, and the collector potential of the transistor Tr becomes a high level near the zero-cross of the commercial power supply 1, but the power supply synchronization signal detection circuit is limited to this. Is not to be done. If the power supply frequency is 50 Hz, the power supply synchronization signal is generated at a cycle of 10 ms. When the power failure detection unit 4 disappears, the power failure detection unit 4 determines that a power failure has occurred.
The invention according to claim 6 is characterized in that the lighting device according to any one of claims 1 to 5 is provided in an instrument body.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
The configuration of the first embodiment of the present invention is shown in FIG. The illuminating device 2 connected to the commercial power source 1 includes a first light source 6 made of a fluorescent lamp and a second light source 9 made of an LED as an auxiliary light source. The first light source 6 is a first lighting circuit. The second light source 9 is turned on by the second lighting circuit unit 10. The first lighting circuit unit 5 switches the DC voltage obtained by rectifying the input AC voltage from the commercial power supply 1 to a high frequency by switching with a switching element, thereby lighting the fluorescent lamp 6 at a high frequency. The second lighting circuit unit 10 controls the lighting of the LED 9 by reducing the DC voltage of the first lighting circuit unit 5. The control unit 3 outputs a lighting signal to the first lighting circuit unit 5 and the second lighting circuit unit 10. The control unit 3 includes a power failure detection unit 4 that determines the presence or absence of a power source from an energization signal obtained from the commercial power source 1 via the diodes D1 and D2. A power source for operating the control unit 3 is supplied from a power source unit 7 composed of a smoothing capacitor charged with a voltage obtained by rectifying the commercial power source 1, and the control unit 3 is supplied with power for a certain time even when the commercial power source 1 is shut off. Can be supplied. Similarly, the first lighting circuit unit 5 includes a power supply unit 8 having a configuration using a smoothing capacitor.
[0014]
A voltage obtained by full-wave rectification of the commercial power source 1 with the diodes D1 and D2 is sent to the power failure detection unit 4 of the control unit 3 as an energization signal, and a lighting signal is sent to the lighting circuit unit 5 while the control unit 3 recognizes the presence or absence of the commercial power source 1. The light source 6 is controlled to turn on (turn off) the light source 6. When the energization signal disappears, the power failure detection unit 4 determines that a power failure has occurred, and stops outputting the lighting signal to the lighting circuit unit 5 so as to turn off the light source 6.
[0015]
Here, the fluorescent lamp 6 that is turned on by the first lighting circuit unit 5 receives about a lighting signal from the control unit 3 and then enters a predetermined lighting state through each step of “preheating → start → lighting”. A light source having a time of 1 second. The LED 9 that is turned on by the second lighting circuit unit 10 is an auxiliary light source that enters a predetermined lighting state when there is a power supply and a lighting signal from the control unit 3. The power supply from the power supply unit 8 in the first lighting circuit unit 5 supplied to the LED 9 and the second lighting circuit unit 10 is configured to be supplied / cut off according to the presence / absence of an energization signal. When the commercial power source 1 is shut off, the energization signal obtained by full-wave rectification of the commercial power source 1 with the diodes D1 and D2 disappears, the switch element Q is opened, the power source of the second lighting circuit unit 5 is shut off, and the LED 9 is turned off.
[0016]
The operation of this embodiment is shown in the flowchart of FIG. When the light source is turned on, a timer for counting the delay time T after a power failure is started. If no power failure is detected and the power is on, the timer for counting the delay time T is reset (T = 0), and the lighting output from the control unit 3 to the lighting circuit units 5 and 10 is turned ON. When a power failure is detected, first, if the lighting circuit unit does not require time for restarting, the power source of the light source is turned off. That is, the second light source 9 is turned off. In addition, even if a power failure is detected, if the lighting circuit unit is a lighting circuit unit that takes time to restart, the light source is kept on until the predetermined time Tx elapses after the power failure is detected. After the elapse, the lighting output from the control unit 3 to the lighting circuit unit 5 is turned off. Thereby, the 1st lighting circuit part 5 stops operation | movement, and the 1st light source 6 turns off.
[0017]
(Embodiment 2)
The configuration of the second embodiment of the present invention is shown in FIG. Although it is substantially the same as the structure of the 1st Embodiment of this invention, the power supply from the power supply part 8 in the 1st lighting circuit part 5 supplied to LED9 and the 2nd lighting circuit part 10 is output signal of the control part 3 It was set as the structure interrupted | blocked by. When the commercial power source 1 is cut off, the energization signal disappears, and when the power failure detection unit 4 determines that a power failure occurs, the switch element Q is turned off by the output signal from the control unit 3, the power source of the second lighting circuit unit 10 is cut off, As a result, the LED 9 is turned off. The operation of this embodiment is the same as the flowchart of FIG.
[0018]
(Embodiment 3)
The configuration of the third embodiment of the present invention is shown in FIG. Although it is substantially the same as the configuration of the first embodiment of the present invention, when the input power is cut off, the energization signal disappears, and when the power failure detection unit 4 determines that a power failure occurs, the lighting output signal from the control unit 3 is cut off. The light sources 6 and 9 are turned off. However, the delay time until the lighting output signal is cut off after judging the power failure is different between the light sources 6 and 9, and the light source 6 is in a predetermined lighting state after the control unit 3 issues the lighting output signal to the lighting circuit unit 5. T1> T2 when T1 takes T2 until the light source 9 reaches a predetermined lighting state after the control unit 3 issues a lighting output signal to the lighting circuit unit 10 until the light source 9 reaches a predetermined lighting state. It is. Here, the time T2 is a time when the user does not feel uncomfortable even if the light source 9 is turned off for this time. On the other hand, the time T1 is a time when the light source 6 is uncomfortable for the user when the light source 6 is turned off for this time.
[0019]
Therefore, in this embodiment, the delay time when the lighting signal output from the control unit 3 to each of the lighting circuit units 5 and 10 is cut off at the time of a power failure is set for each light source and each lighting circuit. The delay time until the control unit 3 cuts off the lighting output signal to the lighting circuit unit 5 after the determination is Tx, and the delay time until the control unit 3 cuts off the lighting output signal to the lighting circuit unit 10 is Ty. Then, the delay time is set so that Tx> Ty. That is, when the time until the light source reaches a predetermined lighting state is short, the lighting signal is cut off early to prevent afterglow of the light source, and the user feels uncomfortable. In addition, even when an instantaneous power failure is detected due to a phase failure or noise, the user does not feel uncomfortable because the time required to reach a predetermined lighting state is short when the lighting signal is restored.
[0020]
The operation of this embodiment is shown in the flowchart of FIG. When the light source is turned on, a timer for counting the delay time T after a power failure is started. If no power failure is detected and the power is on, the timer for counting the delay time T is reset (T = 0), and the lighting output from the control unit 3 to the lighting circuit units 5 and 10 is turned ON. When a power failure is detected, first, if the lighting circuit unit requires a time T1 to restart, the light source is kept on until a predetermined time Tx elapses after the power failure is detected. After Tx has elapsed, the lighting output from the control unit 3 to the lighting circuit unit 5 is turned OFF. Thereby, after the power failure, the first lighting circuit unit 5 stops operating after a predetermined time Tx has elapsed, and the first light source 5 is turned off. Further, if the lighting circuit unit requires a time T2 for restarting, the light source is kept on until a predetermined time Ty elapses after the power failure is detected, and the control is performed after the predetermined time Ty elapses. The lighting output from the unit 3 to the lighting circuit unit 10 is turned off. Thereby, after the power failure, the second lighting circuit unit 10 stops operating after a predetermined time Ty has elapsed, and the second light source 10 is turned off.
[0021]
(Embodiment 4)
The configuration of the fourth embodiment of the present invention is shown in FIG. Although the configuration is almost the same as that of the third embodiment of the invention, in this embodiment, the power source of the light source 9 such as an LED is shared with the power source unit 7 of the control unit 3. That is, the configuration using the power source unit 7 that rectifies the commercial power source 1 and is stored in a smoothing capacitor so that the power source of the control unit 3 and the light source 9 are the same and the power source is supplied for a certain time even when the commercial power source 1 is shut off. Since the light source 9 can be turned on while the control unit 3 is operating, when the power failure detection unit 4 determines that a power failure has occurred, the light source 9 is quickly turned off to prevent afterglow and the commercial power source 1 is shut off. The power consumption of the control unit 3 at the time is reduced, and the operation time of the control unit 3 is extended. The operation of this embodiment may be either the flowchart of FIG. 6 or FIG. 7, but the operation of FIG. 6 corresponding to the case where Ty = 0 is set in the flowchart of FIG. The effect of reducing the power consumption of 3 and extending the operation time of the control unit 3 is great.
[0022]
(Embodiment 5)
The configuration of the fifth embodiment of the present invention is shown in FIG. The operation of this embodiment is the same as the flowchart of FIG. The configuration is almost the same as that of the fourth embodiment of the present invention, except that a power failure determination is performed using a power supply synchronization signal based on zero cross detection as an energization signal. An energization signal synchronized with the power frequency is input from the commercial power source 1 through the diodes D1 and D2 to the control unit 3, and the power failure detection unit 4 determines the presence or absence of the power source based on the energization signal. If the energization signal synchronized with the power supply frequency is 50 Hz, the energization signal is generated at a cycle of 10 ms.
[0023]
The delay time Tx to the first lighting circuit unit 5 that is long enough for the user to feel uncomfortable after receiving the lighting output signal from the control unit 3 is set to 20 ms or more. With this setting, the light source 6 such as a fluorescent lamp that takes a long time to restart can be left in its original state even if the power synchronization signal is lost by about one due to phase loss or noise, and a power failure is determined. it can. In addition, the delay time Ty to the second lighting circuit unit 10 is so short that the time from receiving the lighting output signal from the control unit 3 to the predetermined lighting state does not cause the user to feel uncomfortable is less than 20 ms. Set to. Thereby, when the power supply synchronization signal is lost due to an open phase or noise, and the power failure is determined, the light source 9 such as the LED can be turned off. Further, in the present embodiment, by using the power supply synchronization signal as the energization signal, it is possible to cope with phase control when an incandescent bulb is used as the light source 9, and the control unit 3 can be shared.
[0024]
【The invention's effect】
The invention of claim 1 uses a power source rectified from a commercial power source as a power source of a light source and accumulated in a smoothing capacitor, and from when the control unit issues a lighting output signal to the lighting circuit unit until the light source reaches a predetermined lighting state. If the time required for this is so short that the user does not feel uncomfortable, the light source can be turned off by shutting off the power source at the time of a power failure, and the afterglow after the power failure can be prevented, and the user can feel uncomfortable.
The invention of claim 2 can prevent afterglow after a power failure, eliminate the user's uncomfortable feeling, and shut off the power source of the light source by an output signal from the control unit in the event of a power failure, as in the invention of claim 1. Thus, the configuration for detecting the energization signal can be simplified as compared with the first aspect of the invention.
[0025]
The invention of claim 3 has the same effect as the inventions of claims 1 and 2, and the delay time when the lighting signal output from the control unit to each lighting circuit unit is interrupted at the time of a power failure is set according to the light source. Since it is set separately, the configuration for cutting off the power supply can be omitted as compared with the inventions of claims 1 and 2.
The invention of claim 4 achieves the same effects as those of claims 1 to 3, and the power source of the light source is shared with the power source of the control unit. Further, the operation time of the control unit can be extended.
According to the fifth aspect of the invention, by using the power supply synchronization signal as the energization signal, it is possible to cope with the phase control of the incandescent bulb and to share the control unit.
[Brief description of the drawings]
FIG. 1 is a block circuit diagram showing a configuration of a first embodiment of the present invention.
FIG. 2 is a block circuit diagram showing a configuration of a second embodiment of the present invention.
FIG. 3 is a block circuit diagram showing a configuration of a third embodiment of the present invention.
FIG. 4 is a block circuit diagram showing a configuration of a fourth embodiment of the present invention.
FIG. 5 is a block circuit diagram showing a configuration of a fifth embodiment of the present invention.
FIG. 6 is a flowchart showing the operation of the first and second embodiments of the present invention.
FIG. 7 is a flowchart showing the operation of the third, fourth, and fifth embodiments of the present invention.
FIG. 8 is a block circuit diagram showing a configuration of Conventional Example 1;
FIG. 9 is a block circuit diagram showing a configuration of Conventional Example 2;
FIG. 10 is a flowchart showing the operation of Conventional Examples 1 and 2.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Commercial power supply 2 Illuminating device 3 Control part 4 Power failure detection part 5 1st lighting circuit part 6 Light source (fluorescent lamp)
7 Power supply unit 8 Power supply unit 9 Light source (LED)
10 Second lighting circuit section

Claims

A plurality of light sources, each lighting circuit unit for lighting each light source, a control unit that emits a lighting output signal to the lighting circuit unit and controls the lighting state of each light source, and provided in the control unit A power failure detection unit that determines the presence or absence of a power source by an energization signal of a commercial power source, and a power source unit that rectifies the commercial power source and stores it in a smoothing capacitor so as to supply power for a certain period of time even when the commercial power source is shut off, The time required for the light source to reach the predetermined lighting state after the controller outputs a lighting output signal to the lighting circuit unit varies depending on the light source, and the light source with the shorter time required for the light source to reach the predetermined lighting state is a commercial light source. Power is supplied from the power supply unit in conjunction with an energization signal of the power supply, and when the energization signal disappears due to interruption of the commercial power supply, the power supply of the light source supplied with power from the power supply unit is immediately shut off. Lighting device that.

A plurality of light sources, each lighting circuit unit for lighting each light source, a control unit that emits a lighting output signal to the lighting circuit unit and controls the lighting state of each light source, and provided in the control unit A power failure detection unit that determines the presence or absence of a power source by an energization signal of a commercial power source, and a power source unit that rectifies the commercial power source and stores it in a smoothing capacitor so as to supply power for a certain period of time even when the commercial power source is shut off, The time required for the light source to reach a predetermined lighting state after the control unit issues a lighting output signal to the lighting circuit unit varies depending on the light source, and the light source whose time required for the light source to reach the predetermined lighting state is shorter When power is supplied from the power supply unit by an output signal from the control unit and the energization signal disappears due to the commercial power supply cut off, immediately after the power failure detection unit determines a power failure, the output signal from the control unit Lighting apparatus characterized by interrupting the power supply of the light source that is powered by the electric supply unit.

A plurality of light sources, each lighting circuit unit for lighting each light source, a control unit that emits a lighting output signal to the lighting circuit unit and controls the lighting state of each light source, and provided in the control unit A power failure detection unit that determines the presence or absence of a power source by an energization signal of a commercial power source, and a power source unit that rectifies the commercial power source and stores it in a smoothing capacitor so as to supply power for a certain period of time even when the commercial power source is shut off, The time it takes for the light source to reach a predetermined lighting state after the controller outputs a lighting output signal to the lighting circuit unit varies depending on the light source, the energization signal disappears when the commercial power supply is cut off, and a power failure is determined by the power failure detection unit The lighting device is characterized in that the delay time until the lighting output signal to the lighting circuit portion of each light source is stopped is set according to the time required for each light source to reach a predetermined lighting state.

The power source of the control unit and the power source of at least one light source are the same, and the power source is a power source unit that rectifies the commercial power source and stores it in a smoothing capacitor so as to supply power for a certain period of time even when the commercial power source is shut off. The illumination device according to any one of claims 1 to 3.

The power failure detection unit determines the presence or absence of a power source by an energization signal synchronized with a commercial power source, and the delay time sets one or more delay times of 20 msec or more and less than 20 msec, respectively. Lighting device.

A lighting fixture comprising the lighting device according to any one of claims 1 to 5 provided in a fixture main body.