JP3873577B2 - Discharge lamp lighting device and lighting apparatus using the same - Google Patents

Description

【００４５】
２つのモード切替スイッチＳＷ３ａ，３ｂを両方共にオフすると、入力ポートＫ１，Ｋ２には電圧ＶＣＣが印加され、入力ポートＫ１，Ｋ２の電圧レベルは共にＨレベルとなる。この時、制御用ＩＣ１３の動作モードは連続調光モードに切り替えられ、接続端子ＣＮ１ａ，ＣＮ１ｂ間には調光器３０が接続され、入力ポートＫ３には調光器３０からの調光信号が入力される。制御用ＩＣ１３の内部に設けたＡ／Ｄ変換部が入力ポートＫ３に印加された調光信号をＡ／Ｄ変換し、所定の演算を行った後、Ｄ／Ａ変換部でＤ／Ａ変換した電圧を出力ポートＰ１からＶ／Ｆ変換部１２に出力する。Ｖ／Ｆ変換部１２では制御用ＩＣ１３の出力電圧をＶ／Ｆ変換してインバータ制御部１１に出力し、インバータ制御部１１が制御用ＩＣ１３の出力電圧に応じた動作周波数でスイッチング素子Ｑ１，Ｑ２を発振させることにより、放電灯Ｌａへの供給電力を調節して、放電灯Ｌａを調光点灯させるのである。
【００４６】
また、２つのモード切替スイッチＳＷ３ａ，３ｂを両方共にオンすると、入力ポートＫ１には電圧ＶＣＣを抵抗Ｒ８，Ｒ９で分圧した電圧が入力されると共に、入力ポートＫ２には電圧ＶＣＣを抵抗Ｒ１０，Ｒ１１で分圧した電圧が入力されるので、入力ポートＫ１，Ｋ２の電圧レベルは共にＬレベルとなる。この時、制御用ＩＣ１３の動作モードは、調光比を５０％又は１００％に段階的に切り替える段調光モード▲１▼に切り替えられ、接続端子ＣＮ１ａ，ＣＮ１ｂ間には段調光切替スイッチＳＷ１が接続される。ここで、段調光切替スイッチＳＷ１のオン／オフに応じて、入力ポートＫ３に印加される電圧が２段階に変化するので、制御用ＩＣ１３が入力電圧に応じて出力電圧を２段階に変化させることにより、インバータ回路２の動作周波数が２段階に切り替えられ、放電灯Ｌａの調光比が５０％又は１００％に切り替えられる。
【００４７】
さらに、モード切替スイッチＳＷ３ａをオン、モード切替スイッチＳＷ３ｂをオフすると、入力ポートＫ１には電圧ＶＣＣを抵抗Ｒ８，Ｒ９で分圧した電圧が入力されると共に、入力ポートＫ２には電圧ＶＣＣが入力され、入力ポートＫ１の電圧レベルがＬレベル、入力ポートＫ２の電圧レベルがＨレベルになる。この時、制御用ＩＣ１３の動作モードは、調光比を２０％又は１００％に段階的に切り替える段調光モード▲２▼に切り替えられ、接続端子ＣＮ１ａ，ＣＮ１ｂ間には段調光切替スイッチＳＷ１が接続される。ここで、段調光切替スイッチＳＷ１のオン／オフに応じて、入力ポートＫ３に印加される電圧が２段階に変化するので、制御用ＩＣ１３が入力電圧に応じて出力電圧を２段階に変化させることにより、インバータ回路２の動作周波数が２段階に切り替えられ、放電灯Ｌａの調光比が２０％又は１００％に切り替えられる。
【００４８】
また更に、モード切替スイッチＳＷ３ａをオフ、モード切替スイッチＳＷ３ｂをオンすると、入力ポートＫ１には電圧ＶＣＣが入力されると共に、入力ポートＫ２には電圧ＶＣＣを抵抗Ｒ１０，Ｒ１１で分圧した電圧が入力され、入力ポートＫ１の電圧レベルがＨレベル、入力ポートＫ２の電圧レベルがＬレベルになる。この時、制御用ＩＣ１３の動作モードは固定点灯モードに切り替えられ、出力ポートＰ１から所定電圧値の調光信号を出力する。この調光信号はＶ／Ｆ変換部１２によりＶ／Ｆ変換され、インバータ制御部１１は調光信号の電圧値に応じた動作周波数でスイッチング素子Ｑ１，Ｑ２をオン／オフさせることにより、例えば７０％の調光比で放電灯Ｌａを調光点灯する。
【００４９】
ところで、図３はこの放電灯点灯装置の動作を示しており、電源投入時に制御用ＩＣ１３のリセット動作（図５のＳ１）が行われ、初期設定（図５のＳ２）が行われた後、制御用ＩＣ１３では入力ポートＫ１，Ｋ２の電圧、すなわちスイッチＳＷ３ａ，ＳＷ３ｂの切替状態を読み込み（図３のＳ３）、スイッチＳＷ３ａ，ＳＷ３ｂが共にオフとなっているか否かを判断する（図３のＳ４）。ここで、スイッチＳＷ３ａ，ＳＷ３ｂが共にオフであれば、制御用ＩＣ１３の動作モードが連続調光モードに切り替えられ、制御用ＩＣ１３は入力ポートＫ３の電圧を読み込み（図３のＳ５）、調光器３０から入力される調光信号に応じた電圧値を演算により求め（図３のＳ６）、Ｄ／Ａ変換を行って出力ポートＰ１から電圧信号をＶ／Ｆ変換部１２に出力し（図３のＳ７）、調光信号の電圧値に応じた動作周波数でインバータ回路２が発振動作し、放電灯Ｌａが調光点灯される。
【００５０】
一方、スイッチＳＷ３ａ，ＳＷ３ｂが共にオフになっていなければ、制御用ＩＣ１３では再び入力ポートＫ１，Ｋ２の電圧、すなわちスイッチＳＷ３ａ，ＳＷ３ｂの切替状態を読み込み（図３のＳ８）、スイッチＳＷ３ａ，ＳＷ３ｂのオン／オフに応じて動作モードを段調光モード▲１▼、▲２▼又は固定点灯モードに切り替える。そして、制御用ＩＣ１３の動作モードが段調光モード▲１▼又は▲２▼の場合、制御用ＩＣ１３は段調光切替スイッチＳＷ１の操作入力があるか否かを判断し（図３のＳ９）、スイッチＳＷ１の操作入力に応じて調光比を決定する（図３のＳ１０）。一方、制御用ＩＣ１３の動作モードが固定点灯モードの場合、制御用ＩＣ１３は調光比を所定値（例えば７０％）とする。そして、制御用ＩＣ１３はＤ／Ａ変換を行って出力ポートＰ１から電圧信号をＶ／Ｆ変換部１２に出力し（図３のＳ１２）、調光信号の電圧値に応じた動作周波数でインバータ回路２が発振動作し、放電灯Ｌａが調光点灯される。
【００５１】
このように、参考例の放電灯点灯装置ではモード切替スイッチＳＷ３ａ，ＳＷ３ｂを２つ設け、モード切替スイッチＳＷ３ａ，ＳＷ３ｂの切替操作によって動作モードを連続調光モード、段調光モード［１］，［２］、固定点灯モードの４つに切り替えているので、１台の放電灯点灯装置に連続調光機能と段調光機能の両方の機能を持たせ、且つ、段調光機能でも２つのモードを選択できるようにしている。また、一対の接続端子ＣＮ１ａ，ＣＮ１ｂを、連続調光用の調光信号が入力される入力端子と、調光比を段階的に切り替えるための接点信号が入力される入力端子とに共用しているので、入力端子を共用することによって部品数を減らすことができる。
【００５２】
尚、本参考例ではモード切替スイッチＳＷ３ａ，ＳＷ３ｂを２つ設けているが、切り替える動作モードが２つの場合はモード切替スイッチを１つにしても良い。また、本参考例ではモード切替スイッチＳＷ３ａ，ＳＷ３ｂとは別に、調光レベルを段階的に切り替えるための段調光切替スイッチＳＷ１を設けているが、段調光切替スイッチＳＷ１を設ける代わりに、モード切替スイッチＳＷ３ａ，ＳＷ３ｂのオン／オフの組み合わせで調光レベルを段階的に切り替えるようにしても良く、モード切替スイッチＳＷ３ａ，ＳＷ３ｂで段調光切替スイッチを兼用することができる。
【００５３】
（実施形態１）
本発明の実施形態１を図４乃至図６を参照して説明する。尚、放電灯点灯装置の基本的な構成及びその動作は上述した基本構成又は参考例と同様であるので、同一の構成要素には同一の符号を付して、その説明を省略する。
【００５４】
本回路では、動作モードを連続調光モードと段調光モードと初期照度補正モードとに切り替えるためにマイクロコンピュータよりなる制御用ＩＣ１３を設けている。制御用ＩＣ１３は入力ポートＫ１〜Ｋ４を４つ、出力ポートＰ１を１つ備えており、出力ポートＰ１の出力電圧をＶ／Ｆ変換部１２に入力している。図５は制御用ＩＣ１３の内部ブロック図であり、入力ポートＫ４には平滑コンデンサＣ４の平滑電圧を抵抗Ｒ１５，Ｒ１６で分圧した電圧が入力され、入力ポートＫ４の電圧が所定のしきい値電圧以上である期間（すなわち平滑コンデンサＣ４の両端電圧が規定電圧以上である期間）を計時する点灯時間タイマ（計時手段）２１と、点灯時間タイマ２１による計時時間を読み書きすると共に初期照度を補正するために用いる補正用テーブルを格納したＥＥＰＲＯＭである不揮発性メモリ２２とが設けられている。補正用テーブルは放電灯Ｌａの使用時間と補正用の調光比とを対応付けたテーブルであって、制御用ＩＣ１３の内部に設けた調光比設定部２３において点灯時間タイマ２１により計時された使用時間を用いて不揮発性メモリ２２から調光比を読み出すことで、放電灯Ｌａの光出力を略一定に保つための調光比を決定することができる。調光比設定部２３により決定した調光比は調光信号生成部２４に与えられ、インバータ制御部１１に与える調光信号が生成される。ここに、調光比設定部２３や不揮発性メモリ２２などから、点灯時間タイマ２１による計時時間（点灯累積時間）の経過とともに発生する光束減退を補正する補正手段が構成される。
【００５５】
また、制御用ＩＣ１３には、点灯時間タイマ２１や不揮発性メモリ２２の点灯時間をリセットするためのリセット制御部（リセット手段）２５が設けられており、接続端子ＣＮ１ａ，ＣＮ１ｂ間に接続されたリセットスイッチＳＷ２を操作することにより、点灯時間をリセットすることができる。すなわち、リセットスイッチＳＷ２がオンになると、入力ポートＫ３への入力電圧が引き下げられ、リセット制御部２５が点灯時間タイマ２１と不揮発性メモリ２２の点灯時間をリセットするようになっている。
【００５６】
ここで、表２に示すように、モード切替スイッチＳＷ３ａ，ＳＷ３ｂのオン／オフに応じて入力ポートＫ１，Ｋ２の電圧レベルが変化し、制御用ＩＣ１３の動作モードが連続調光モード、段調光モード、初期照度補正モード▲１▼、▲２▼の４つのモードに切り替えられる。
【００５７】
【表２】

【００５８】
２つのモード切替スイッチＳＷ３ａ，３ｂを両方共にオフすると、入力ポートＫ１，Ｋ２の電圧レベルは共にＨレベルとなり、参考例と同様に制御用ＩＣ１３の動作モードが連続調光モードに切り替えられる。この時、接続端子ＣＮ１ａ，ＣＮ１ｂ間には調光器３０が接続され、制御用ＩＣ１３は入力ポートＫ３に印加された調光信号に応じて放電灯Ｌａを連続調光する。
【００５９】
また、２つのモード切替スイッチＳＷ３ａ，３ｂを両方共にオンすると、入力ポートＫ１，Ｋ２の電圧レベルは共にＬレベルとなり、制御用ＩＣ１３の動作モードは段調光モードとなる。この時、接続端子ＣＮ１ａ，ＣＮ１ｂ間には段調光切替スイッチＳＷ１が接続され、段調光切替スイッチＳＷ１のオン／オフに応じて入力ポートＫ３に印加される電圧が２段階に変化するので、制御用ＩＣ１３が入力電圧に応じて出力電圧を２段階に変化させることにより、インバータ回路２の動作周波数が２段階に切り替えられ、放電灯Ｌａの調光比が例えば５０％又は１００％に切り替えられる。
【００６０】
さらに、モード切替スイッチＳＷ３ａをオン、モード切替スイッチＳＷ３ｂをオフすると、入力ポートＫ１の電圧レベルがＬレベル、入力ポートＫ２の電圧レベルがＨレベルになり、制御用ＩＣ１３の動作モードは、放電灯Ｌａの初期照度を略６０％の調光比に補正する初期照度補正モード▲１▼に切り替えられる。この時、接続端子ＣＮ１ａ，ＣＮ１ｂ間にはリセットスイッチＳＷ２が接続され、リセットスイッチＳＷ２をオンすると、入力ポートＫ３への入力電圧（すなわちリセット制御部２５への入力電圧）が引き下げられ、リセット制御部２５が点灯時間タイマ２１、不揮発性メモリ２２の点灯時間をリセットする。
【００６１】
また更に、モード切替スイッチＳＷ３ａをオフ、モード切替スイッチＳＷ３ｂをオンすると、入力ポートＫ１の電圧レベルがＨレベル、入力ポートＫ２の電圧レベルがＬレベルになり、制御用ＩＣ１３の動作モードは、放電灯Ｌａの初期照度を略７０％の調光比に補正する初期照度補正モード▲２▼に切り替えられる。この時、接続端子ＣＮ１ａ，ＣＮ１ｂ間にはリセットスイッチＳＷ２が接続され、リセットスイッチＳＷ２をオンすると、入力ポートＫ３への入力電圧（すなわちリセット制御部２５への入力電圧）が引き下げられ、リセット制御部２５が点灯時間タイマ２１、不揮発性メモリ２２の点灯時間をリセットする。
【００６２】
ところで、図６はこの放電灯点灯装置の動作を示しており、Ｓ１〜Ｓ１２の動作は参考例と同様であるので、その説明は省略する。ここで、スイッチＳＷ３ａ，ＳＷ３ｂが共にオフではなく（図６のＳ４）、且つ共にオンではない場合（図６のＳ１３）、制御用ＩＣ１３はスイッチＳＷ３ａ，ＳＷ３ｂの切替状態を再度読み込み、動作モードを初期照度補正モード［１］又は［２］に切り替える（図６のＳ１４）。そして、制御用ＩＣ１３では点灯時間タイマ２１から点灯時間を読み出し（図６のＳ１６）、読み出した使用時間に基づいて放電灯Ｌａから所定の光出力が得られるように調光比設定部２３が調光比を決定し（図６のＳ１７）、その調光比に応じた調光信号を調光信号生成部２４が出力する（図６のＳ１８）。インバータ制御部１１は、この調光信号に従ってインバータ回路２の動作周波数を変化させ、放電灯Ｌａへの供給電力を調節し、放電灯Ｌａを所定の調光比（６０％又は７０％）で点灯させる。次に、点灯時間タイマ２１は点灯時間（つまり使用時間）を計時し（図６のＳ１９）、計時後の点灯時間を不揮発性メモリ２２に格納する（図６のＳ２０）。以後は、不揮発性メモリ２２からの点灯時間の読み出し及び調光制御と、不揮発性メモリ２２への点灯時間の書き込みとを繰り返すのである。ところで、初期照度補正モードで動作中にリセットスイッチＳＷ２の操作によるリセット信号がリセット制御部２５に入力されると（図６のＳ１５）、点灯時間タイマ２１および不揮発性メモリ２２における点灯時間がリセットされるのである（図６のＳ２１）。
【００６３】
このように、本実施形態の放電灯点灯装置ではモード切替スイッチＳＷ３ａ，ＳＷ３ｂを２つ設け、モード切替スイッチＳＷ３ａ，ＳＷ３ｂの切替操作によって動作モードを連続調光モード、段調光モード、初期照度補正モード▲１▼，▲２▼の４つに切り替えているので、１台の放電灯点灯装置に連続調光機能と段調光機能と初期照度補正機能の３つの機能を持たせ、且つ、初期照度補正機能でも２つのモードを選択できるようにしている。また、一対の接続端子ＣＮ１ａ，ＣＮ１ｂを、連続調光用の調光信号が入力される入力端子と、調光比を段階的に切り替えるための接点信号が入力される入力端子と、点灯時間をリセットするためのリセット信号が入力される入力端子とに共用しているので、入力端子を共用することによって部品数を減らすことができる。
【００６４】
（実施形態２）
本発明の実施形態２を図７及び表３を参照して説明する。尚、本実施形態の放電灯点灯装置の回路構成は実施形態１と同様であるので、図示及び説明は省略する。
【００６５】
本回路では、表３に示すように、モード切替スイッチＳＷ３ａ，ＳＷ３ｂのオン／オフに応じて制御用ＩＣ１３の動作モードが連続調光モード、段調光モード、初期照度補正モード［１］、［３］の４つのモードに切り替えられる。初期照度補正モード［３］以外の動作モードは、実施形態１で説明した動作モードと同様であるのでその説明は省略する。
【００６６】
【表３】

【００６７】
モード切替スイッチＳＷ３ａをオフ、モード切替スイッチＳＷ３ｂをオンすると、入力ポートＫ１の電圧レベルがＨレベル、入力ポートＫ２の電圧レベルがＬレベルになり、制御用ＩＣ１３の動作モードは、放電灯Ｌａの初期照度を略７０％の調光比に補正する初期照度補正モード▲３▼に切り替えられる。この初期照度補正モード▲３▼は、接続端子ＣＮ１ａ，ＣＮ１ｂに所定電圧値の直流電圧を印加することによって点灯時間をリセットする動作モードであり、接続端子ＣＮ１ａ，ＣＮ１ｂ間には例えば直流の電圧信号からなる調光信号を発生する調光器３０が接続される。そして、制御用ＩＣ１３の入力ポートＫ３に例えば５Ｖの電圧が印加されるように、調光器３０から調光信号が入力されると、制御用ＩＣ１３のリセット制御部２５はリセット信号が入力されたと判断し（図７のＳ１５’）、点灯時間タイマ２１と不揮発性メモリ２２の点灯時間をリセットする（図７のＳ２１）。この動作モードでは、接続端子ＣＮ１ａ，ＣＮ１ｂに所定電圧値の直流電圧を印加することによって点灯時間をリセットすることができるので、例えば複数の放電灯点灯装置が設置され、各放電灯点灯装置が初期照度補正モード▲３▼で動作しているような場合には、放電灯の一斉交換時に各放電灯点灯装置に所定電圧値のリセット信号を印加することによって、各放電灯点灯装置の点灯時間を一度にリセットすることができ、各放電灯点灯装置のリセットスイッチを操作して点灯時間をリセットする場合に比べて、点灯時間をリセットする手間を少なくできる。
【００６８】
（実施形態３）
本発明の実施形態３を図８及び表４を参照して説明する。尚、本実施形態の放電灯点灯装置の回路構成は実施形態１と同様であるので、図示及び説明は省略する。
【００６９】
本回路では、表４に示すように、モード切替スイッチＳＷ３ａ，ＳＷ３ｂのオン／オフに応じて制御用ＩＣ１３の動作モードが連続調光モード、段調光モード、初期照度補正モード［１］、工程調整モードの４つのモードに切り替えられる。尚、工程調整モード以外の動作モードは、基本構成又は参考例で説明した動作モードと同様であるのでその説明は省略する。
【００７０】
【表４】

【００７１】
モード切替スイッチＳＷ３ａをオフ、モード切替スイッチＳＷ３ｂをオンすると、入力ポートＫ１の電圧レベルがＨレベル、入力ポートＫ２の電圧レベルがＬレベルになり、制御用ＩＣ１３の動作モードは工程調整モードに切り替えられる。この工程調整モードは、製造時などに接続端子ＣＮ１ａ，ＣＮ１ｂに所定の直流電圧信号を印加することによってテストプログラムを動作させて、放電灯点灯装置の動作確認を行うための動作モードであり、接続端子ＣＮ１ａ，ＣＮ１ｂ間には例えば直流の電圧信号からなる調光信号を発生する調光器３０が接続される。この時、入力ポートＫ３に約３Ｖの電圧を２秒間印加した後、１秒間停止する状態を３回繰り返すと（図８のＳ２２）、制御用ＩＣ１３は動作確認のためのテストプログラムを動作させる（図８のＳ２３）。
【００７２】
このテストプログラムは、放電灯点灯装置の機能を確認するために各種の動作を行うよう予め設定されており、例えば各調光状態での電気的特性を確認するためであれば、調光比と点灯時間とをプログラムすれば良い。また、初期照度度補正モード▲３▼のリセット動作を確認するためであれば、入力ポートＫ３に所定電圧値の直流電圧を印加した際にリセット動作を行ったことを知らせるため、放電灯を点滅させるようにプログラムしても良く、このような工程調整モードを設けることによって、放電灯点灯装置の動作確認を効率良く行うことができる。
【００７３】
（実施形態４）
本発明の実施形態４を図９を参照して説明する。本実施形態の照明器具は、上述した実施形態１〜３の放電灯点灯装置を用いた照明器具であり、放電灯点灯装置の構成及び動作は実施形態１〜３と同様であるので、図示及び説明は省略する。
【００７４】
ところで、図１７は従来の照明器具の外観斜視図であり、器具本体５０の内部には上述した放電灯点灯装置が収納されている。そして、器具本体５０の下面に設けたランプソケット５１，５１に放電灯Ｌａの口金を保持することにより、放電灯Ｌａが器具本体５０に取り付けられると共に、放電灯点灯装置に電気的に接続される。なお、各ランプソケット５１，５１の間の器具本体５０下面の部位には反射板５２が設けられており、反射板５２によって放電灯Ｌａから器具本体５０側に放射された光が照明空間側に放射される。このような照明器具において、リセットスイッチＳＷ２を器具本体５０の内部に取り付けると、点灯時間をリセットする際に、例えば反射板５２を取り外したりして、リセットスイッチＳＷ２の操作を行わなければならず、手間がかかっていた。
【００７５】
そこで、本実施形態の照明器具では、図９に示すように反射板５２の表面から操作部を露出させた状態で、リセットスイッチＳＷ２を器具本体５０に取り付けており、器具本体５０の内部に収納された放電灯点灯装置の器体４０とリセットスイッチＳＷ２とは電線５３を介して電気的に接続される。このように、本実施形態ではリセットスイッチＳＷ２を反射板５２の表面に取り付けているので、器具本体５０の外部からリセットスイッチＳＷ２を操作することができ、リセット操作を容易に行える。尚、リセットスイッチＳＷ２の取付位置を反射板５２に限定する趣旨のものではなく、器具本体５０の外部から操作可能な場所であれば、図１０に示すように器具本体５０の側面に取り付けても良いし、図１１に示すようにランプソケット５１の表面に取り付けても良い。
【００７６】
また、リセットスイッチＳＷ２としてはスライドスイッチや非復帰タイプのトグルスイッチを用いても良いが、復帰させる手間が不要であるので、復帰タイプの押釦スイッチを用いるのが望ましい。また、放電灯点灯装置としてインバータタイプの放電灯点灯装置を用いているので、リセットスイッチＳＷ２や電線５３にノイズが乗り易いため、リセットスイッチＳＷ２としては定常時に開放状態となる復帰タイプの押釦スイッチを用いるのが望ましい。さらに、ノイズによる誤動作を防止するため、リセットスイッチＳＷ２の端子間電圧を開放時は約３Ｖ以上、短絡時は１Ｖ以下とし、開放時と短絡時の端子間電圧にノイズマージンを設けることにより、ノイズの影響を受けにくくできる。尚、開放時の端子間電圧の上限値及び短絡時の端子間電圧の最小値は、回路設計上好適な電圧値に設定すれば良い。
【００７７】
（実施形態５）
本発明の実施形態５を図面を参照して説明する。尚、本実施形態の放電灯点灯装置の回路構成及び動作は上述した基本構成又は参考例或いは実施形態１〜３の放電灯点灯装置と同様であるので、図示及び説明は省略する。
【００７８】
この放電灯点灯装置の正面図を図１２（ａ）に、右側から見た側面図を図１２（ｂ）に、下側から見た側面図を図１２（ｃ）にそれぞれ示す。この放電灯点灯装置は、器体４０の内部に上述の回路が形成された回路基板（図示せず）を収納したものである。器体４０の長手方向の一側には、電源線が接続される電線接続部４１ａと、上記接続端子ＣＮ１ａ，ＣＮ１ｂを構成する電線接続部４１ｂとが設けられ、長手方向の他側にはランプソケット（図示せず）からの電線がそれぞれ接続される２組の電線接続部４１ｃ，４１ｄが設けられている。また、器体４０の長手方向における電源側には、スライドスイッチよりなるモード切替スイッチＳＷ３ａ，ＳＷ３ｂが配設されている。
【００７９】
各電線接続部４１ａ〜４１ｄは電線の芯線がそれぞれ挿入される一対の電線挿入口４２を有し、器体４０の内部には電線挿入口４２に臨むようにして接続端子が収納されており、電線挿入口４２から挿入された電線が接続端子に電気的且つ機械的に接続されるようになっている。
【００８０】
ここで、リセットスイッチＳＷ２などの接続される電線接続部４１ｂや、モード切替スイッチＳＷ３ａ，ＳＷ３ｂを、ランプソケットへの電線が接続される出力側の電線接続部４１ｃ，４１ｄの近傍に設けても良いが、出力側の電線接続部４１ｃ，４１ｄには高周波の高い電圧が発生するため、ノイズの影響を受け易くなる。それに対して、本実施形態の放電灯点灯装置では、リセットスイッチＳＷ２などの接続される電線接続部４１ｂや、モード切替スイッチＳＷ３ａ，ＳＷ３ｂを電源側に設けているので、ノイズの影響を低減することができる。また、電源線の接続される電線接続部４１ａの近傍は、マイコンよりなる制御用ＩＣ１３などの電源を確保しやすいため、制御用ＩＣ１３を電源側に配置することにより、リセットスイッチＳＷ２などの接続される電線接続部４１ｂ及びモード切替スイッチＳＷ３ａ，ＳＷ３ｂと制御用ＩＣ１３との間の配線長を短くでき、ノイズの影響を受けにくくできる。
【００８１】
なお、この放電灯点灯装置を用いる照明器具の器具本体（図示せず）に、リセットスイッチＳＷ２などの接続される電線接続部４１ｂやモード切替スイッチＳＷ３ａ，ＳＷ３ｂを設けても良いが、器具本体の構造によっては取付強度や耐電圧などの問題が生じる虞があり、また器具本体に例えば穴開け加工などの加工を施す必要があるため、放電灯点灯装置の器体４０にリセットスイッチＳＷ２などの接続される電線接続部４１ｂやモード切替スイッチＳＷ３ａ，ＳＷ３ｂを設けるのが望ましい。
【００８２】
【発明の効果】
上述のように、請求項１の発明は、放電灯と、放電灯を調光点灯させる調光点灯部と、放電灯の点灯累積時間を計時する計時手段と、計時手段の計時結果に応じて点灯累積時間の経過とともに発生する光束減退を補正するように調光レベルを設定する補正手段と、外部より信号を入力するための接続端子とを備え、前記調光点灯部は、前記接続端子を介して入力される調光信号又は前記補正手段により設定された調光レベルの何れかに基づいて前記放電灯を連続調光する連続調光手段と、前記接続端子を介して入力される調光レベル切替用接点の接点信号に基づいて前記放電灯を段調光する段調光手段とを具備し、前記調光点灯部の動作モードを、前記連続調光手段が前記調光信号に基づいて前記放電灯を連続調光する連続調光モード、前記段調光手段が前記接点信号に基づいて前記放電灯を段調光する段調光モード、前記連続調光手段が前記補正手段により設定された調光レベルに基づいて放電灯の調光レベルを制御する初期照度補正モードの内の何れかに切り替える第１の切替スイッチを調光点灯部本体に設けるとともに、前記接続端子を介して所定のリセット信号が入力されると、前記計時手段の計時した点灯累積時間をリセットして計時動作を再開させるリセット手段を設けたことを特徴とし、１台の放電灯点灯装置に連続調光機能と段調光機能と光束補正機能の３つの機能を持たせることができ、且つ、第１の切替スイッチを用いて放電灯点灯装置の動作モードを所望の動作モードに切り替えることができる。そのうえ、複数の放電灯点灯装置に調光信号として所定の信号を入力することにより、各放電灯点灯装置の計時手段が計時した点灯累積時間を一度にリセットすることができ、リセット操作に要する手間を少なくできるという効果がある。
【００８５】
請求項２の発明は、請求項１の発明において、前記段調光手段の動作モードを複数に切り替えるための第２の切替スイッチを調光点灯部本体に設けたことを特徴とし、第２の切替スイッチを用いて段調光手段の動作モードを所望の動作モードに切り替えることができるという効果がある。
【００８８】
請求項３の発明は、請求項１記載の放電灯点灯装置を用いる照明器具であって、前記接続端子に接続され、リセット操作に応じて前記リセット信号を発生するリセットスイッチを備え、放電灯、調光点灯部、計時手段、補正手段及びリセット手段を保持する器具本体の表面に前記リセットスイッチを設けたことを特徴とし、リセットスイッチは器具本体の表面に設けられているので、器具本体の外部からリセットスイッチを操作することができ、点灯累積時間のリセット操作を容易に行うことができるという効果がある。
【００８９】
請求項４の発明は、請求項３の発明において、前記接続端子が前記調光点灯部の電源入力端子の近傍に設けられたことを特徴とし、調光点灯部の出力側には高周波の高い電圧が発生するため、リセットスイッチの接続端子を出力側の近傍に設けた場合はノイズの影響を受けやすいが、リセットスイッチの接続端子を電源入力端子の近傍に設けているので、出力側の近傍に設けた場合に比べてノイズの影響を受け難くできるという効果がある。
【００９０】
請求項５の発明は、請求項３又は４の発明において、放電灯の周りに配置され、放電灯の光を反射して所望の方向に配光する反射板を器具本体に設け、前記リセットスイッチが反射板に取り付けられたことを特徴し、リセットスイッチを反射板に取り付けているので、器具本体の外部からリセットスイッチを操作することができ、点灯累積時間のリセット操作を容易に行えるという効果がある。
【００９１】
請求項６の発明は、請求項３乃至５の何れかの発明において、前記リセットスイッチは定常時に開状態とし、リセット時に閉状態とすることを特徴とし、定常時はリセットスイッチの端子間を開状態としているので、定常時にリセットスイッチの端子間にノイズが乗って誤動作するのを防止できるという効果がある。
【００９２】
請求項７の発明は、請求項６の発明において、前記リセットスイッチの端子間電圧を、開状態において略３Ｖ以上、閉状態において略１Ｖ以下にすることを特徴とし、請求項６の発明と同様の効果を奏する。
【００９３】
請求項８の発明は、請求項３の発明において、前記調光点灯部は、前記第１の切替スイッチの切替状態に応じて動作モードを、前記連続調光モード、前記段調光モード、前記初期照度補正モード、又は前記調光点灯部の機能を検査するテストモードの内の何れかに切り替えるとともに、前記テストモードにおいて前記接続端子に所定の信号が入力されると、前記調光点灯部が機能確認のための動作を行うことを特徴とし、各端子を共通化することによって部品数を削減できるという効果がある。
【図面の簡単な説明】
【図１】 本発明に係る放電灯点灯装置の基本構成を示す回路図である。
【図２】 参考例の放電灯点灯装置の回路図である。
【図３】 同上の動作を説明するフローチャートである。
【図４】 実施形態１の放電灯点灯装置の回路図である。
【図５】 同上の一部省略せるブロック図である。
【図６】 同上の動作を説明するフローチャートである。
【図７】 実施形態２の放電灯点灯装置の動作を説明するフローチャートである。
【図８】 実施形態３の放電灯点灯装置の動作を説明するフローチャートである。
【図９】 実施形態４の照明器具の一部破断せる外観斜視図である。
【図１０】 同上の別の照明器具の一部破断せる外観斜視図である。
【図１１】 同上のまた別の照明器具の一部破断せる外観斜視図である。
【図１２】 実施形態５の照明器具を示し、（ａ）は正面図、（ｂ）は右側から見た側面図、（ｃ）は下側から見た側面図である。
【図１３】 従来の放電灯点灯装置の回路図である。
【図１４】 従来の別の放電灯点灯装置の回路図である。
【図１５】 従来のまた別の放電灯点灯装置の回路図である。
【図１６】 同上の動作を示すフローチャートである。
【図１７】 同上の外観斜視図である。
【符号の説明】
２ インバータ回路
１０ 制御部
１１ インバータ制御部
１２ Ｖ／Ｆ変換部
ＣＮ１ａ，ＣＮ１ｂ 接続端子
Ｌａ 放電灯
ＳＷ１ 段調光切替スイッチ
ＳＷ３ モード切替スイッチ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discharge lamp lighting device and a lighting fixture using the same.
[0002]
[Prior art]
In recent years, lighting fixtures using discharge lamp lighting devices have been provided, and have been widely used especially for applications such as energy saving and production. In addition, the discharge lamp lighting device is not limited to a constant light output of the discharge lamp, but has a step dimming function in which the dimming level can be switched step by step, or a continuous dimming that continuously changes the dimming level. There have been provided discharge lamp lighting devices having functions according to applications, such as those having a light function and those having a light beam correction function for correcting a light flux deterioration of a discharge lamp that occurs over time.
[0003]
FIG. 13 is a circuit diagram of a discharge lamp lighting device having a continuous light control function, and this discharge lamp lighting device employs an inverter circuit. In other words, a rectifier DB1 made of a diode bridge for full-wave rectification of the AC power supply AC is provided, and a switching element Q3 made of a MOSFET is connected between the DC output terminals of the rectifier DB1 via the inductor L1. Further, a series circuit of a diode D1 and a smoothing capacitor C1 is connected between both ends of the switching element Q3, and the inverter circuit 2 is driven by using the smoothing capacitor C1 as a power source. Here, a so-called step-up chopper circuit 1 is constituted by the inductor L1, the switching element Q3, the diode D1, and the smoothing capacitor C1.
[0004]
The inverter circuit 2 includes a series circuit of a pair of switching elements Q1 and Q2 composed of MOSFETs connected between both ends of the smoothing capacitor C1, and between the both ends of the low-side switching element Q2, a DC cut capacitor C2 and a resonance circuit are provided. The series circuit of the inductor L2 and the discharge lamp La is connected. Further, a capacitor C3 that constitutes a resonance circuit together with the inductor L2 is connected between the non-power supply side ends of both filament electrodes of the discharge lamp La. Here, the switching elements Q1 to Q3 are controlled to be turned on / off by the inverter control unit 11, and the switching elements Q1 and Q2 are alternately turned on / off at a high frequency.
[0005]
The operation of the inverter circuit 2 is well known, and an alternating current is supplied to the discharge lamp La by boosting the output voltage of the rectifier DB1 by the boost chopper circuit 1 and alternately turning on / off the switching elements Q1 and Q2. Is done. Here, since the inductor L2 and the capacitor C3 exist in the power supply path to the discharge lamp La, the ON / OFF cycle of the switching elements Q1, Q2 (that is, the operating frequency of the inverter circuit 2), the inductor L2, and the capacitor C3. The energy supplied to the discharge lamp La can be adjusted by the relationship with the resonance frequency of the resonance circuit composed of the above.
[0006]
Here, a dimmer 30 is connected between the dimming signal input terminals CN1a and CN1b, and a dimming signal composed of a DC voltage signal of 0 to 10 V is input from the dimmer 30. This dimming signal is V / F converted by the V / F conversion unit 12, and the inverter control unit 11 turns on / off the switching elements Q1 and Q2 at an operating frequency corresponding to the voltage value of the dimming signal, thereby causing a discharge lamp. The discharge lamp La is dimmed by changing the energy supplied to La.
[0007]
A series circuit of resistors R1 and R2 is connected between the AC input terminals of the rectifier DB1, and the AC voltage of the AC power supply AC is divided by the resistors R1 and R2 and rectified by the rectifier DB2 formed of a diode bridge. After that, it is smoothed by the smoothing capacitor C4. The voltage VCC obtained by making the voltage across the smoothing capacitor C4 constant by the three-terminal regulator RG1 is supplied as an operating voltage to the control unit 10 including the inverter control unit 11, the V / F conversion unit 12, and the like.
[0008]
By the way, although the discharge lamp lighting device described above has a continuous dimming function, a discharge lamp lighting device having a step dimming function is also provided. FIG. 14 shows a discharge lamp having a step dimming function. The circuit diagram of a lighting device is shown. Since the basic configuration of the discharge lamp lighting device is the same as that of the above-described discharge lamp lighting device of FIG. 13, the same components are denoted by the same reference numerals, and description thereof is omitted.
[0009]
In this circuit, the switch SW1 is connected between the step dimming input terminals CN2a and CN2b, and the dimming level of the discharge lamp La is changed stepwise according to the on / off state of the switch SW1. Here, a series circuit of resistors R3 and R4 is connected between the output terminals of the three-terminal regulator RG1, and a connection point of the resistors R3 and R4 is connected to the step dimming input terminal CN2a. Further, a series circuit of resistors R17 and R18 is connected between the stage dimming input terminal CN2b and the circuit ground, and the voltage at the connection point of the resistors R17 and R18 is input to the V / F converter 12. Yes.
[0010]
Here, the voltage V1 at the connection point of the resistors R17 and R18 is V / F converted by the V / F converter 12, and the inverter controller 11 turns on the switching elements Q1 and Q2 at the operating frequency corresponding to the voltage value of the voltage V1. By turning off / off, the energy supplied to the discharge lamp La is changed stepwise, and the discharge lamp La is turned on stepwise. That is, when the switch SW1 is off, the voltage V1 is 0 V, so that the inverter control unit 11 lights the discharge lamp La in the fully lit state. On the other hand, when the switch SW1 is on, the voltage V1 is a voltage obtained by dividing the voltage VCC by the resistors R3, R4, R17, and R18. The switching elements Q1 and Q2 are turned on / off at the operating frequency corresponding to this voltage, and are released. The electric lamp La is dimmed.
[0011]
Incidentally, a discharge lamp lighting device having an initial illuminance correction function is also provided. FIG. 15 shows a circuit diagram of a discharge lamp lighting device having an initial illuminance correction function. Since the basic configuration of the discharge lamp lighting device is the same as that of the above-described discharge lamp lighting device of FIG. 13, the same components are denoted by the same reference numerals, and description thereof is omitted.
[0012]
In this circuit, the inverter control unit 11 changes the operating frequency of the switching elements Q1 and Q2 according to the correction signal from the illuminance correction unit 20, and changes the power supplied to the discharge lamp La to change the discharge lamp La. The light output is controlled to be substantially constant.
[0013]
The illuminance correction unit 20 is configured by a microcomputer, and a lighting time timer 21 that measures a period during which the voltage across the smoothing capacitor C4 is equal to or higher than a specified voltage, reads and writes the time measured by the lighting time timer 21, and is used in the illuminance correction unit 20. A nonvolatile memory 22 comprising an EEPROM storing a correction table is provided. The correction table is a table in which the usage time of the discharge lamp La is associated with the dimming ratio for correction, and is used by the lighting time timer 21 in the dimming ratio setting unit 23 provided in the illuminance correction unit 20. By reading the dimming ratio from the nonvolatile memory 22 using time, the dimming ratio for keeping the light output of the discharge lamp La substantially constant can be determined. The dimming ratio determined by the dimming ratio setting unit 23 is given to the dimming signal generation unit 24, and a dimming signal to be given to the inverter control unit 11 is generated. Here, the power of the control unit 10 and the illuminance correction unit 20 is supplied from a three-terminal regulator RG1 that makes the voltage across the smoothing capacitor C4 constant.
[0014]
Accordingly, as shown in FIG. 16, immediately after the power is turned on (S1 in FIG. 16), the initialization process of the lighting time timer 21 (S2 in FIG. 16) is performed, and the lighting time timer 21 is written in the nonvolatile memory 22. Read the lighting time (ie, usage time). When the lighting time is set in the lighting time timer 21 in this way, the dimming ratio setting unit 23 reads the lighting time from the lighting time timer 21 (S4 in FIG. 16), and based on the read usage time, a predetermined value is obtained from the discharge lamp La. The dimming ratio is determined so that an optical output is obtained (S5 in FIG. 16), and the dimming signal generation unit 24 outputs a dimming signal corresponding to the dimming ratio (S6 in FIG. 16). The inverter control unit 11 adjusts the power supplied to the discharge lamp La by changing the operating frequency of the inverter circuit 2 in accordance with the dimming signal. Next, the lighting time timer 21 measures the lighting time (that is, the usage time) (S7 in FIG. 16), and stores the lighting time after the clocking in the nonvolatile memory 22 (S8 in FIG. 16). Thereafter, the reading of the lighting time from the nonvolatile memory 22 and the dimming control, and the writing of the lighting time to the nonvolatile memory 22 are repeated.
[0015]
By the way, the illuminance correction unit 20 is provided with a reset control unit 25 for resetting the lighting time of the lighting time timer 21 and the non-volatile memory 22, and operates the reset switch SW2 connected to the reset control unit 25. Thus, the lighting time can be reset. Here, a voltage of, for example, 5 V is applied to both ends of the reset switch SW2 by the reset control unit 25 (a resistor (not shown) is connected in series to the reset switch SW2). When the reset switch SW2 is turned on, the reset control is performed. The input voltage to the unit 25 is lowered to reset the lighting time of the lighting time timer 21 and the nonvolatile memory 22. Accordingly, as shown in FIG. 16, when a reset signal by the operation of the reset switch SW2 is input to the reset control unit 25 (S3 in FIG. 16), the lighting time in the lighting time timer 21 and the nonvolatile memory 22 is reset. (S9 in FIG. 16).
[0016]
[Problems to be solved by the invention]
In the discharge lamp lighting device having the above-described configuration, a device having a continuous light control function, a device having a step light control function, and a device having an initial illuminance correction function are provided separately. Thus, when the user is changed or the specifications such as the energy saving measures and the production effects are changed, the discharge lamp lighting device has to be changed to one having a desired function.
[0017]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a discharge lamp lighting device capable of performing step dimming and continuous dimming with a single unit and a lighting fixture using the same. There is to do.
[0018]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, a discharge lamp, a dimming lighting unit for dimming and lighting the discharge lamp,A time measuring means for measuring the accumulated lighting time of the discharge lamp, a correcting means for setting a dimming level so as to correct a light flux decrease generated with the elapse of the accumulated lighting time according to a time measurement result of the time measuring means, and a signal from the outside And a connection terminal for inputtingThe dimming lighting partContinuously dimmers the discharge lamp based on either a dimming signal input via the connection terminal or a dimming level set by the correcting meansContinuous light control means;Input via the connection terminalFor contact signal of dimming level switching contactDimming the discharge lamp based onStep dimming means andThe dimming lighting unit operating mode, the continuous dimming means continuously dimming the discharge lamp based on the dimming signal, the step dimming means to the contact signal A step dimming mode in which the discharge lamp is dimmed based on an initial illuminance correction mode in which the continuous dimming unit controls the dimming level of the discharge lamp based on the dimming level set by the correction unit. A first changeover switch for switching to any one is provided in the dimming / lighting unit main body, and when a predetermined reset signal is input via the connection terminal, the accumulated lighting time measured by the time measuring means is reset and timed operation is performed. Provided reset means to resumeIt is characterized by1Dimming function and stage dimming functionAnd light flux correction functionCan be functionalIn addition, the operation mode of the discharge lamp lighting device can be switched to a desired operation mode using the first changeover switch. In addition, by inputting a predetermined signal as a dimming signal to a plurality of discharge lamp lighting devices, the accumulated lighting time measured by the timing means of each discharge lamp lighting device can be reset at once, and the effort required for the reset operation Can be reduced.
[0021]
  Claim2In the invention of claim 1, in the invention of claim 1, a second change-over switch for switching the operation mode of the step dimming means to a plurality is provided in the dimming / lighting unit body, and the second change-over switch is By using it, the operation mode of the step dimmer can be switched to a desired operation mode.
[0024]
  Claim3In this invention, it is a lighting fixture using the discharge lamp lighting device according to claim 1,A reset switch that is connected to the connection terminal and generates a reset signal in response to a reset operationThe reset switch is provided on the surface of the instrument main body that holds the discharge lamp, the dimming / lighting unit, the time measuring means, the correction means, and the reset means, and the reset switch is provided on the surface of the instrument main body. Therefore, the reset switch can be operated from the outside of the instrument body, and the lighting cumulative time can be easily reset.
[0025]
  Claim4In the invention of claim3In the invention of,ContactA connecting terminal is provided in the vicinity of the power input terminal of the dimming lighting unit, and since a high frequency voltage is generated on the output side of the dimming lighting unit, the connection terminal of the reset switch is connected to the output side. If it is provided in the vicinity, it is easily affected by noise, but since the connection terminal of the reset switch is provided in the vicinity of the power supply input terminal, it can be less affected by noise than in the case of being provided in the vicinity of the output side.
[0026]
  Claim5In the invention of claim3 or 4In the invention of the present invention, the reflector body is arranged around the discharge lamp, and reflects the light of the discharge lamp and distributes the light in a desired direction in the instrument body, wherein the reset switch is attached to the reflector plate, Since the reset switch is attached to the reflector, the reset switch can be operated from the outside of the instrument body, and the lighting cumulative time can be easily reset.
[0027]
  Claim6In the invention of claimAny of 3 to 5In the invention of the present invention, the reset switch is open at the time of steady state and closed at the time of reset. Between the terminals of the reset switch is open at the time of steady state, noise is generated between the terminals of the reset switch at the time of steady state. It can prevent getting on and malfunctioning.
[0028]
  Claim7In the invention of claim6According to the invention, the voltage across the terminals of the reset switch is set to approximately 3 V or more in the open state and approximately 1 V or less in the closed state.6The same effect as that of the present invention is achieved.
[0029]
  Claim8In the invention of claim3In the invention ofThe dimming lighting unit has the function of the continuous dimming mode, the step dimming mode, the initial illuminance correction mode, or the dimming lighting unit according to the switching state of the first changeover switch. While switching to one of the test modes to be inspected, and when a predetermined signal is input to the connection terminal in the test mode, the dimming lighting unit performs an operation for function confirmationThe number of components can be reduced by sharing each terminal.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0031]
  (Basic configuration)
  Of the present inventionBasic configurationWill be described with reference to FIG. This discharge lamp lighting device includes a rectifier DB1 composed of a diode bridge for full-wave rectification of the AC power supply AC, and a switching element Q3 composed of a MOSFET is connected between the DC output terminals of the rectifier DB1 via an inductor L1. Further, a series circuit of a diode D1 and a smoothing capacitor C1 is connected between both ends of the switching element Q3, and the inverter circuit 2 is driven by using the smoothing capacitor C1 as a power source. Here, a so-called step-up chopper circuit 1 is constituted by the inductor L1, the switching element Q3, the diode D1, and the smoothing capacitor C1.
[0032]
The inverter circuit 2 includes a series circuit of a pair of switching elements Q1 and Q2 composed of MOSFETs connected between both ends of the smoothing capacitor C1, and between the both ends of the low-side switching element Q2, a DC cut capacitor C2 and a resonance circuit are provided. The series circuit of the inductor L2 and the discharge lamp La is connected. Further, a capacitor C3 that constitutes a resonance circuit together with the inductor L2 is connected between the non-power supply side ends of both filament electrodes of the discharge lamp La. Here, the switching elements Q1 to Q3 are controlled to be turned on / off by the inverter control unit 11, and the switching elements Q1 and Q2 are alternately turned on / off at a high frequency.
[0033]
The operation of the inverter circuit 2 is well known, and an alternating current is supplied to the discharge lamp La by boosting the output voltage of the rectifier DB1 by the boost chopper circuit 1 and alternately turning on / off the switching elements Q1 and Q2. Is done. Here, since the inductor L2 and the capacitor C3 exist in the power supply path to the discharge lamp La, the ON / OFF cycle of the switching elements Q1, Q2 (that is, the operating frequency of the inverter circuit 2), the inductor L2, and the capacitor C3. The energy supplied to the discharge lamp La can be adjusted by the relationship with the resonance frequency of the resonance circuit composed of the above.
[0034]
Here, the control unit 10 includes the inverter control unit 11 described above and a V / F conversion unit 12 that V / F converts a dimming signal input from the outside, and the dimming signal is the V / F conversion unit 12. The inverter controller 11 turns on / off the switching elements Q1 and Q2 at the operating frequency corresponding to the voltage value of the dimming signal, thereby changing the energy supplied to the discharge lamp La and releasing it. The lamp La is dimmed.
[0035]
A series circuit of resistors R1 and R2 is connected between the AC input terminals of the rectifier DB1, the AC voltage of the AC power supply AC is divided by the resistors R1 and R2, and rectified by the rectifier DB2 formed of a diode bridge. After smoothing by the smoothing capacitor C4, the voltage VCC that is further constant-voltaged by the three-terminal regulator RG1 is supplied to the control unit 10 as an operating voltage.
[0036]
In this discharge lamp lighting device, for example, a dimmer 30 that generates a dimming signal composed of a DC voltage signal of 0 to 10 V, or a step dimming changeover switch for stepwise switching the dimming level of the discharge lamp La. Connection terminals CN1a and CN1b to which SW1 is connected are provided. Then, one connection terminal CN1a is connected to one input terminal of the V / F converter 12 via a resistor R6, one end of the resistor R7 is connected to the other connection terminal CN1b, and the other end of the resistor R7 is connected to V The other input terminal of the / F converter 12 is connected to the circuit ground. Further, a series circuit of resistors R3 and R4 is connected between the output terminals of the three-terminal regulator RG1, and a mode switch (first switching) is connected between the connection point of the resistors R3 and R4 and the connection terminal CN1b via the resistor R5. Switch) Connects SW3.
[0037]
  By the way, when the operation mode of the discharge lamp lighting device is switched to the step dimming mode, the mode switch SW3 is turned on, and the step dimming switch (dimming level switching contact) SW1 is connected between the connection terminals CN1a and CN1b. Connecting. When the mode switch SW3 is turned on, the connection point between the resistors R3 and R4 and the connection terminal CN1b are connected via the resistor R5. Here, when the step dimming selector switch SW1 is turned on, a voltage obtained by dividing the voltage VCC by the resistors R3 to R7 is input to the V / F conversion unit 12 and V / F converted. Then, the inverter control unit 11 as the step dimmer means turns on / off the switching elements Q1 and Q2 at the operating frequency corresponding to the divided voltage, thereby adjusting the power supplied to the discharge lamp La and the discharge lamp La. Is dimmed at a predetermined dimming level. On the other hand, when the step dimming changeover switch SW1 is turned off, the input voltage of the V / F converter 12 becomes 0V, and the inverter controller 11 turns on the discharge lamp La in the fully lit state. In addition,This deviceIn the V / F converter 12, the higher the voltage value of the dimming signal input to the V / F converter 12, the higher the operating frequency.
[0038]
On the other hand, when the operation mode of the discharge lamp lighting device is switched to the continuous dimming mode, the mode selector switch SW3 is turned off and the dimmer 30 is connected between the connection terminals CN1a and CN1b. When the mode switch SW3 is turned off, the dimming signal of the dimmer 30 connected to the connection terminals CN1a and CN1b is input to the V / F converter 12 via the resistors R6 and R7. The dimmer 30 generates a dimming signal composed of a DC voltage of, for example, 0 to 10 V, and the dimming signal of the dimmer 30 is V / F converted by the V / F conversion unit 12 and is continuously dimmed. As the inverter control unit 11 turns on / off the switching elements Q1, Q2 at an operating frequency corresponding to the voltage value of the dimming signal, the power supplied to the discharge lamp La is changed, and the dimming ratio of the discharge lamp La Can be continuously changed from a predetermined lower limit (for example, about 20%) to 100%.
[0039]
  in this way,AboveThe discharge lamp lighting device is provided with a mode changeover switch SW3 for switching the operation mode to the step dimming mode or the continuous dimming mode, and the inverter control unit 11 performs the continuous dimming means or the switching operation of the mode changeover switch SW3. Since it operates as a step dimming means, one discharge lamp lighting device can have both a continuous dimming function and a step dimming function. Also, the pair of connection terminals CN1a and CN1b are shared by an input terminal to which a dimming signal for continuous dimming is input and an input terminal to which a contact signal for switching the dimming ratio stepwise is input. Therefore, the number of parts can be reduced by sharing the input terminal.
[0040]
  (Reference example)
  Of the present inventionReference exampleWill be described with reference to FIGS. The basic structure and operation of the discharge lamp lighting device are as follows:Device with the basic configuration described aboveTherefore, the same components are denoted by the same reference numerals, and the description thereof is omitted.
[0041]
  In this circuit, a control IC 13 formed of a microcomputer is provided to switch the operation mode between a continuous dimming mode and a step dimming mode. The control IC 13 includes three input ports K1 to K3 and one output port P1, and inputs the output voltage of the output port P1 to the V / F converter 12. The control IC 13 changes the operation mode to the continuous dimming mode or the step dimming mode according to the voltage levels of the input ports K1 and K2.[1], [2]The four modes of the fixed lighting mode are switched.Example of a discharge lamp lighting deviceIn the step dimming mode, multiple modes are provided.[1]Is a mode in which the dimming ratio is switched to 50% or 100% step by step, and the step dimming mode[2]Is a mode in which the dimming ratio is switched stepwise to 20% or 100%.Here, the numbers enclosed with [] indicate rounded numbers, for example, [1] is the rounded number 1, and the same is described below.
[0042]
The input ports K1 and K2 are pulled up to the output voltage VCC of the three-terminal regulator RG1 via a series circuit of resistors R8 and R9 and a series circuit of resistors R10 and R11, respectively. The connection point of the resistors R8 and R9 is connected to one end of the mode changeover switch SW3a, the connection point of the resistors R10 and R11 is connected to one end of the mode changeover switch SW3b, and the other end of the mode changeover switches SW3a and SW3b is The resistor R14 is connected to the circuit ground. The input port K3 is pulled up to the output voltage VCC of the three-terminal regulator RG1 through the resistor R12, and is connected to the connection terminal CN1b through the resistor R13. The connection terminal CN1a is connected to a connection point between the mode changeover switches SW3a and SW3b and the resistor R14.
[0043]
Here, the operation mode of the control IC 13 can be switched to four modes according to the on / off of the mode changeover switches SW3a, SW3b. The on / off of the mode changeover switches SW3a, SW3b and the operation mode of the discharge lamp lighting device Table 1 shows the relationship. Here, the first changeover switch for switching the dimming state to continuous dimming or step dimming from the mode changeover switches SW3a and SW3b, and the first for switching the operation mode of the control IC 13 as step dimming means to a plurality of modes. Two changeover switches are configured.
[0044]
[Table 1]

[0045]
When both of the two mode changeover switches SW3a and 3b are turned off, the voltage VCC is applied to the input ports K1 and K2, and the voltage levels of the input ports K1 and K2 are both H level. At this time, the operation mode of the control IC 13 is switched to the continuous dimming mode, the dimmer 30 is connected between the connection terminals CN1a and CN1b, and the dimming signal from the dimmer 30 is input to the input port K3. Is done. The A / D converter provided inside the control IC 13 A / D converts the dimming signal applied to the input port K3, performs a predetermined calculation, and then performs D / A conversion by the D / A converter. The voltage is output from the output port P1 to the V / F converter 12. The V / F conversion unit 12 V / F converts the output voltage of the control IC 13 and outputs it to the inverter control unit 11. The inverter control unit 11 switches the switching elements Q1, Q2 at an operating frequency according to the output voltage of the control IC 13. Is oscillated to adjust the power supplied to the discharge lamp La, and the discharge lamp La is dimmed.
[0046]
When both the mode change-over switches SW3a and 3b are both turned on, a voltage obtained by dividing the voltage VCC by the resistors R8 and R9 is input to the input port K1, and the voltage VCC is applied to the resistors R10 and R2 at the input port K2. Since the voltage divided by R11 is input, the voltage levels of the input ports K1 and K2 are both L level. At this time, the operation mode of the control IC 13 is switched to the step dimming mode (1) in which the dimming ratio is switched stepwise to 50% or 100%, and the step dimming switch SW1 is connected between the connection terminals CN1a and CN1b. Is connected. Here, since the voltage applied to the input port K3 changes in two steps according to on / off of the step dimming switch SW1, the control IC 13 changes the output voltage in two steps according to the input voltage. As a result, the operating frequency of the inverter circuit 2 is switched to two stages, and the dimming ratio of the discharge lamp La is switched to 50% or 100%.
[0047]
Further, when the mode selector switch SW3a is turned on and the mode selector switch SW3b is turned off, the voltage VCC divided by the resistors R8 and R9 is input to the input port K1, and the voltage VCC is input to the input port K2. The voltage level of the input port K1 becomes L level and the voltage level of the input port K2 becomes H level. At this time, the operation mode of the control IC 13 is switched to the step dimming mode (2) in which the dimming ratio is switched stepwise to 20% or 100%, and the step dimming switch SW1 is connected between the connection terminals CN1a and CN1b. Is connected. Here, since the voltage applied to the input port K3 changes in two steps according to on / off of the step dimming switch SW1, the control IC 13 changes the output voltage in two steps according to the input voltage. As a result, the operating frequency of the inverter circuit 2 is switched to two stages, and the dimming ratio of the discharge lamp La is switched to 20% or 100%.
[0048]
Further, when the mode changeover switch SW3a is turned off and the mode changeover switch SW3b is turned on, the voltage VCC is input to the input port K1, and the voltage obtained by dividing the voltage VCC by the resistors R10 and R11 is input to the input port K2. Thus, the voltage level of the input port K1 becomes H level and the voltage level of the input port K2 becomes L level. At this time, the operation mode of the control IC 13 is switched to the fixed lighting mode, and a dimming signal having a predetermined voltage value is output from the output port P1. This dimming signal is V / F converted by the V / F conversion unit 12, and the inverter control unit 11 turns on / off the switching elements Q1 and Q2 at an operating frequency corresponding to the voltage value of the dimming signal, for example, 70 The discharge lamp La is dimmed at a dimming ratio of%.
[0049]
FIG. 3 shows the operation of this discharge lamp lighting device. After the power-on, the control IC 13 is reset (S1 in FIG. 5) and the initial setting (S2 in FIG. 5) is performed. The control IC 13 reads the voltages of the input ports K1 and K2, that is, the switching state of the switches SW3a and SW3b (S3 in FIG. 3), and determines whether both the switches SW3a and SW3b are off (S4 in FIG. 3). ). If both the switches SW3a and SW3b are off, the operation mode of the control IC 13 is switched to the continuous dimming mode, and the control IC 13 reads the voltage of the input port K3 (S5 in FIG. 3), and the dimmer A voltage value corresponding to the dimming signal input from 30 is obtained by calculation (S6 in FIG. 3), D / A conversion is performed, and a voltage signal is output from the output port P1 to the V / F converter 12 (FIG. 3). S7), the inverter circuit 2 oscillates at an operating frequency corresponding to the voltage value of the dimming signal, and the discharge lamp La is dimmed.
[0050]
On the other hand, if both the switches SW3a and SW3b are not turned off, the control IC 13 reads the voltages of the input ports K1 and K2, that is, the switching state of the switches SW3a and SW3b again (S8 in FIG. 3), and the switches SW3a and SW3b The operation mode is switched to step dimming mode {circle around (1)}, {circle around (2)} or fixed lighting mode according to on / off. When the operation mode of the control IC 13 is the step dimming mode (1) or (2), the control IC 13 determines whether or not there is an operation input of the step dimming switch SW1 (S9 in FIG. 3). Then, the dimming ratio is determined according to the operation input of the switch SW1 (S10 in FIG. 3). On the other hand, when the operation mode of the control IC 13 is the fixed lighting mode, the control IC 13 sets the dimming ratio to a predetermined value (for example, 70%). Then, the control IC 13 performs D / A conversion and outputs a voltage signal from the output port P1 to the V / F converter 12 (S12 in FIG. 3), and an inverter circuit at an operating frequency corresponding to the voltage value of the dimming signal 2 oscillates and the discharge lamp La is dimmed.
[0051]
  in this way,Reference exampleIn the discharge lamp lighting device, two mode changeover switches SW3a and SW3b are provided, and the operation mode is changed to the continuous dimming mode and the step dimming mode by the switching operation of the mode changeover switches SW3a and SW3b.[1], [2]Since it is switched to four fixed lighting modes, one discharge lamp lighting device has both the continuous dimming function and the step dimming function, and two modes are also selected for the step dimming function I can do it. Also, the pair of connection terminals CN1a and CN1b are shared by an input terminal to which a dimming signal for continuous dimming is input and an input terminal to which a contact signal for switching the dimming ratio stepwise is input. Therefore, the number of parts can be reduced by sharing the input terminal.
[0052]
  still,Reference exampleThen, although two mode change-over switches SW3a and SW3b are provided, when there are two operation modes to be switched, one mode change-over switch may be provided. Also,Reference exampleHowever, in addition to the mode switch SW3a and SW3b, a step dimmer switch SW1 for switching the dimming level in stages is provided. Instead of providing the step dimmer switch SW1, the mode switch SW3a and SW3b are provided. The dimming level may be switched stepwise by a combination of ON / OFF, and the mode dimming switch SW3a and SW3b can also be used as a step dimming switching switch.
[0053]
  (Embodiment1)
  Embodiment of the present invention1Will be described with reference to FIGS. The basic structure and operation of the discharge lamp lighting device are as follows:Basic configuration or reference example described aboveTherefore, the same components are denoted by the same reference numerals, and the description thereof is omitted.
[0054]
In this circuit, in order to switch the operation mode to the continuous light control mode, the step light control mode, and the initial illuminance correction mode, a control IC 13 composed of a microcomputer is provided. The control IC 13 includes four input ports K1 to K4 and one output port P1, and inputs the output voltage of the output port P1 to the V / F conversion unit 12. FIG. 5 is an internal block diagram of the control IC 13. A voltage obtained by dividing the smoothed voltage of the smoothing capacitor C4 by the resistors R15 and R16 is input to the input port K4, and the voltage at the input port K4 is a predetermined threshold voltage. In order to read and write the time measured by the lighting time timer 21 (time measuring means) 21 that measures the above period (that is, the period during which the voltage across the smoothing capacitor C4 is equal to or higher than the specified voltage), and to correct the initial illuminance. And a non-volatile memory 22 which is an EEPROM storing a correction table used for the above. The correction table is a table that associates the usage time of the discharge lamp La with the dimming ratio for correction, and is measured by the lighting time timer 21 in the dimming ratio setting unit 23 provided in the control IC 13. By reading the dimming ratio from the nonvolatile memory 22 using the usage time, the dimming ratio for keeping the light output of the discharge lamp La substantially constant can be determined. The dimming ratio determined by the dimming ratio setting unit 23 is given to the dimming signal generation unit 24, and a dimming signal to be given to the inverter control unit 11 is generated. Here, the light control ratio setting unit 23, the non-volatile memory 22 and the like constitute correction means that corrects a decrease in luminous flux that occurs with the passage of the time measured by the lighting time timer 21 (lighting accumulated time).
[0055]
Further, the control IC 13 is provided with a reset control unit (reset means) 25 for resetting the lighting time timer 21 and the lighting time of the nonvolatile memory 22, and a reset connected between the connection terminals CN1a and CN1b. The lighting time can be reset by operating the switch SW2. That is, when the reset switch SW2 is turned on, the input voltage to the input port K3 is lowered, and the reset control unit 25 resets the lighting time of the lighting time timer 21 and the nonvolatile memory 22.
[0056]
Here, as shown in Table 2, the voltage levels of the input ports K1 and K2 change according to the on / off of the mode selector switches SW3a and SW3b, and the operation mode of the control IC 13 is the continuous dimming mode and the step dimming. The mode can be switched to four modes of (1) and (2).
[0057]
[Table 2]

[0058]
  When both of the two mode changeover switches SW3a and 3b are turned off, the voltage levels of the input ports K1 and K2 are both H level.Reference exampleSimilarly to the above, the operation mode of the control IC 13 is switched to the continuous light control mode. At this time, the dimmer 30 is connected between the connection terminals CN1a and CN1b, and the control IC 13 continuously dims the discharge lamp La according to the dimming signal applied to the input port K3.
[0059]
When both of the two mode selector switches SW3a and 3b are turned on, the voltage levels of the input ports K1 and K2 are both L level, and the operation mode of the control IC 13 is the step dimming mode. At this time, the step dimming changeover switch SW1 is connected between the connection terminals CN1a and CN1b, and the voltage applied to the input port K3 changes in two steps according to the on / off of the step dimming changeover switch SW1. When the control IC 13 changes the output voltage in two stages according to the input voltage, the operating frequency of the inverter circuit 2 is switched to two stages, and the dimming ratio of the discharge lamp La is switched to, for example, 50% or 100%. .
[0060]
Further, when the mode selector switch SW3a is turned on and the mode selector switch SW3b is turned off, the voltage level of the input port K1 becomes L level and the voltage level of the input port K2 becomes H level, and the operation mode of the control IC 13 is the discharge lamp La. Is switched to an initial illuminance correction mode {circle around (1)} that corrects the initial illuminance to a dimming ratio of approximately 60%. At this time, the reset switch SW2 is connected between the connection terminals CN1a and CN1b. When the reset switch SW2 is turned on, the input voltage to the input port K3 (that is, the input voltage to the reset control unit 25) is lowered, and the reset control unit 25 resets the lighting time of the lighting time timer 21 and the nonvolatile memory 22.
[0061]
Furthermore, when the mode switch SW3a is turned off and the mode switch SW3b is turned on, the voltage level of the input port K1 becomes H level and the voltage level of the input port K2 becomes L level, and the operation mode of the control IC 13 is the discharge lamp. The initial illuminance correction mode {circle around (2)} for correcting the initial illuminance of La to a dimming ratio of about 70% is switched. At this time, the reset switch SW2 is connected between the connection terminals CN1a and CN1b. When the reset switch SW2 is turned on, the input voltage to the input port K3 (that is, the input voltage to the reset control unit 25) is lowered, and the reset control unit 25 resets the lighting time of the lighting time timer 21 and the nonvolatile memory 22.
[0062]
  FIG. 6 shows the operation of this discharge lamp lighting device, and the operations of S1 to S12 are as follows.Reference exampleSince this is the same, the description thereof is omitted. Here, when both the switches SW3a and SW3b are not off (S4 in FIG. 6) and are not on (S13 in FIG. 6), the control IC 13 reads the switching state of the switches SW3a and SW3b again, and sets the operation mode. Initial illumination correction mode[1] or [2](S14 in FIG. 6). Then, the control IC 13 reads the lighting time from the lighting time timer 21 (S16 in FIG. 6), and the dimming ratio setting unit 23 adjusts the predetermined light output from the discharge lamp La based on the read usage time. The light ratio is determined (S17 in FIG. 6), and the dimming signal generator 24 outputs a dimming signal corresponding to the dimming ratio (S18 in FIG. 6). The inverter control unit 11 changes the operating frequency of the inverter circuit 2 according to the dimming signal, adjusts the power supplied to the discharge lamp La, and lights the discharge lamp La at a predetermined dimming ratio (60% or 70%). Let Next, the lighting time timer 21 measures the lighting time (that is, the usage time) (S19 in FIG. 6), and stores the lighting time after the clocking in the nonvolatile memory 22 (S20 in FIG. 6). Thereafter, the reading of the lighting time from the nonvolatile memory 22 and the dimming control, and the writing of the lighting time to the nonvolatile memory 22 are repeated. By the way, when the reset signal by the operation of the reset switch SW2 is input to the reset control unit 25 during the operation in the initial illumination correction mode (S15 in FIG. 6), the lighting time in the lighting time timer 21 and the nonvolatile memory 22 is reset. (S21 in FIG. 6).
[0063]
As described above, in the discharge lamp lighting device of the present embodiment, two mode changeover switches SW3a and SW3b are provided, and the operation mode is changed to continuous dimming mode, step dimming mode, and initial illuminance correction by switching operation of the mode changeover switches SW3a and SW3b Since the mode is switched to four modes (1) and (2), one discharge lamp lighting device has three functions of a continuous dimming function, a step dimming function, and an initial illuminance correction function. The illumination correction function can also select two modes. In addition, the pair of connection terminals CN1a and CN1b are connected to an input terminal to which a dimming signal for continuous dimming is input, an input terminal to which a contact signal for switching the dimming ratio stepwise is input, and a lighting time. Since it is shared with the input terminal to which the reset signal for resetting is input, the number of parts can be reduced by sharing the input terminal.
[0064]
  (Embodiment2)
  Embodiment of the present invention2Will be described with reference to FIG. The circuit configuration of the discharge lamp lighting device of the present embodiment is an embodiment.1Therefore, the illustration and description are omitted.
[0065]
  In this circuit, as shown in Table 3, the operation mode of the control IC 13 is a continuous dimming mode, a step dimming mode, and an initial illuminance correction mode in accordance with the on / off of the mode selector switches SW3a and SW3b.[1], [3]The four modes are switched. Initial illumination correction mode[3]The operation mode other than the embodiment1Since this is the same as the operation mode described above, the description thereof is omitted.
[0066]
[Table 3]

[0067]
When the mode selector switch SW3a is turned off and the mode selector switch SW3b is turned on, the voltage level of the input port K1 becomes H level, the voltage level of the input port K2 becomes L level, and the operation mode of the control IC 13 is the initial state of the discharge lamp La. It is switched to the initial illuminance correction mode (3) for correcting the illuminance to a dimming ratio of approximately 70%. This initial illuminance correction mode {circle around (3)} is an operation mode in which the lighting time is reset by applying a DC voltage of a predetermined voltage value to the connection terminals CN1a and CN1b. For example, a DC voltage signal is connected between the connection terminals CN1a and CN1b. A dimmer 30 that generates a dimming signal is connected. When a dimming signal is input from the dimmer 30 so that a voltage of, for example, 5 V is applied to the input port K3 of the control IC 13, the reset control unit 25 of the control IC 13 receives the reset signal. It judges (S15 'of FIG. 7), and resets the lighting time of the lighting time timer 21 and the non-volatile memory 22 (S21 of FIG. 7). In this operation mode, the lighting time can be reset by applying a DC voltage of a predetermined voltage value to the connection terminals CN1a and CN1b. Therefore, for example, a plurality of discharge lamp lighting devices are installed, and each discharge lamp lighting device is initially set. When operating in the illuminance correction mode (3), the lighting time of each discharge lamp lighting device can be reduced by applying a reset signal having a predetermined voltage value to each discharge lamp lighting device during simultaneous replacement of the discharge lamps. It can be reset at a time, and the time and effort for resetting the lighting time can be reduced as compared with the case of resetting the lighting time by operating the reset switch of each discharge lamp lighting device.
[0068]
  (Embodiment3)
  Embodiment of the present invention3Will be described with reference to FIG. The circuit configuration of the discharge lamp lighting device of the present embodiment is an embodiment.1Therefore, the illustration and description are omitted.
[0069]
  In this circuit, as shown in Table 4, the operation mode of the control IC 13 is set to the continuous dimming mode, the step dimming mode, the initial illuminance correction mode in accordance with the on / off of the mode selector switches SW3a and SW3b.[1]The process adjustment mode can be switched to four modes. Note that the operation modes other than the process adjustment mode are:Basic configuration or reference exampleSince this is the same as the operation mode described above, the description thereof is omitted.
[0070]
[Table 4]

[0071]
When the mode selector switch SW3a is turned off and the mode selector switch SW3b is turned on, the voltage level of the input port K1 becomes H level and the voltage level of the input port K2 becomes L level, and the operation mode of the control IC 13 is switched to the process adjustment mode. . This process adjustment mode is an operation mode for confirming the operation of the discharge lamp lighting device by operating a test program by applying a predetermined DC voltage signal to the connection terminals CN1a and CN1b at the time of manufacture. A dimmer 30 is connected between the terminals CN1a and CN1b. The dimmer 30 generates a dimming signal composed of, for example, a DC voltage signal. At this time, after applying a voltage of about 3 V to the input port K3 for 2 seconds and then stopping for 1 second three times (S22 in FIG. 8), the control IC 13 operates a test program for confirming the operation (S22). S23 of FIG.
[0072]
This test program is set in advance to perform various operations in order to confirm the function of the discharge lamp lighting device. For example, if the electrical characteristics in each dimming state are to be confirmed, the dimming ratio and What is necessary is just to program lighting time. In order to confirm the reset operation in the initial illuminance correction mode (3), the discharge lamp blinks to notify that the reset operation has been performed when a DC voltage of a predetermined voltage value is applied to the input port K3. The program may be programmed so that the operation of the discharge lamp lighting device can be checked efficiently by providing such a process adjustment mode.
[0073]
  (Embodiment4)
  Embodiment of the present invention4Will be described with reference to FIG. The lighting fixture of this embodiment is the embodiment described above.1-3It is a lighting fixture using the discharge lamp lighting device, the configuration and operation of the discharge lamp lighting device is an embodiment1-3Therefore, the illustration and description are omitted.
[0074]
FIG. 17 is an external perspective view of a conventional lighting fixture, and the above-described discharge lamp lighting device is accommodated in the fixture main body 50. Then, by holding the base of the discharge lamp La in the lamp sockets 51, 51 provided on the lower surface of the fixture body 50, the discharge lamp La is attached to the fixture body 50 and is electrically connected to the discharge lamp lighting device. . A reflector 52 is provided on the lower surface of the fixture body 50 between the lamp sockets 51 and 51, and the light emitted from the discharge lamp La to the fixture body 50 by the reflector 52 is directed to the illumination space. Radiated. In such a lighting fixture, when the reset switch SW2 is attached to the inside of the fixture body 50, when resetting the lighting time, for example, the reflector 52 is removed, and the reset switch SW2 must be operated. It took time and effort.
[0075]
Therefore, in the lighting fixture of the present embodiment, the reset switch SW2 is attached to the fixture body 50 with the operation portion exposed from the surface of the reflector 52 as shown in FIG. The body 40 of the discharge lamp lighting device and the reset switch SW2 are electrically connected via an electric wire 53. Thus, in this embodiment, since reset switch SW2 is attached to the surface of reflecting plate 52, reset switch SW2 can be operated from the exterior of instrument main body 50, and reset operation can be performed easily. Note that the mounting position of the reset switch SW2 is not limited to the reflecting plate 52, but can be mounted on the side surface of the instrument body 50 as shown in FIG. Alternatively, it may be attached to the surface of the lamp socket 51 as shown in FIG.
[0076]
Further, as the reset switch SW2, a slide switch or a non-returning type toggle switch may be used. However, it is preferable to use a return type push button switch because there is no need for returning. Further, since an inverter type discharge lamp lighting device is used as the discharge lamp lighting device, it is easy for noise to ride on the reset switch SW2 and the electric wire 53. Therefore, as the reset switch SW2, a return type push button switch that is opened in a steady state is used. It is desirable to use it. Furthermore, in order to prevent malfunction due to noise, the voltage between the terminals of the reset switch SW2 is about 3V or more when opened, and 1V or less when shorted, and noise margin is provided for the voltage between terminals when opened and shorted. Can be less affected by Note that the upper limit value of the voltage between terminals at the time of opening and the minimum value of the voltage between terminals at the time of a short circuit may be set to a voltage value suitable for circuit design.
[0077]
  (Embodiment5)
  Embodiment of the present invention5Will be described with reference to the drawings. The circuit configuration and operation of the discharge lamp lighting device of this embodiment are as follows.Basic configuration or reference example described above or Embodiments 1 to 3Since it is the same as the discharge lamp lighting device of FIG.
[0078]
FIG. 12A shows a front view of the discharge lamp lighting device, FIG. 12B shows a side view seen from the right side, and FIG. 12C shows a side view seen from the lower side. In this discharge lamp lighting device, a circuit board (not shown) on which the above-described circuit is formed is accommodated in the body 40. One side of the container body 40 in the longitudinal direction is provided with a wire connection part 41a to which a power supply line is connected and a wire connection part 41b constituting the connection terminals CN1a and CN1b, and on the other side in the longitudinal direction is a lamp. Two sets of electric wire connection portions 41c and 41d to which electric wires from sockets (not shown) are respectively connected are provided. Further, on the power source side in the longitudinal direction of the container body 40, mode change-over switches SW3a and SW3b made of slide switches are arranged.
[0079]
Each of the electric wire connecting portions 41a to 41d has a pair of electric wire insertion ports 42 into which the core wires of the electric wires are respectively inserted, and a connection terminal is accommodated inside the container body 40 so as to face the electric wire insertion port 42. The electric wire inserted from the opening 42 is electrically and mechanically connected to the connection terminal.
[0080]
Here, the wire connection part 41b to be connected such as the reset switch SW2 and the mode changeover switches SW3a and SW3b may be provided in the vicinity of the output side wire connection parts 41c and 41d to which the electric wire to the lamp socket is connected. However, since a high-frequency voltage is generated at the output-side wire connecting portions 41c and 41d, it is easily affected by noise. On the other hand, in the discharge lamp lighting device of the present embodiment, the electric wire connection portion 41b to which the reset switch SW2 and the like are connected and the mode changeover switches SW3a and SW3b are provided on the power source side, so that the influence of noise is reduced. Can do. Also, since the power supply line such as the control IC 13 made of a microcomputer is easily secured in the vicinity of the wire connection portion 41a to which the power supply line is connected, the reset switch SW2 or the like is connected by arranging the control IC 13 on the power supply side. The wire length between the wire connecting portion 41b and the mode changeover switches SW3a and SW3b and the control IC 13 can be shortened, and the influence of noise can be reduced.
[0081]
It should be noted that the fixture main body (not shown) of the lighting fixture using this discharge lamp lighting device may be provided with a wire connecting portion 41b to which the reset switch SW2 and the like are connected and mode changeover switches SW3a and SW3b. Depending on the structure, there is a possibility that problems such as mounting strength and withstand voltage may occur, and it is necessary to perform processing such as drilling on the instrument body, so that the reset switch SW2 and the like are connected to the body 40 of the discharge lamp lighting device. It is desirable to provide an electric wire connecting portion 41b and mode change-over switches SW3a and SW3b.
[0082]
【The invention's effect】
  As described above, the invention of claim 1 includes a discharge lamp, a dimming lighting unit for dimming and lighting the discharge lamp,A time measuring means for measuring the accumulated lighting time of the discharge lamp, a correcting means for setting a dimming level so as to correct a light flux decrease generated with the elapse of the accumulated lighting time according to a time measurement result of the time measuring means, and a signal from the outside And a connection terminal for inputtingThe dimming lighting partContinuously dimmers the discharge lamp based on either a dimming signal input via the connection terminal or a dimming level set by the correcting meansContinuous light control means;Input via the connection terminalFor contact signal of dimming level switching contactDimming the discharge lamp based onStep dimming means andThe dimming lighting unit operating mode, the continuous dimming means continuously dimming the discharge lamp based on the dimming signal, the step dimming means to the contact signal A step dimming mode in which the discharge lamp is dimmed based on an initial illuminance correction mode in which the continuous dimming unit controls the dimming level of the discharge lamp based on the dimming level set by the correction unit. A first changeover switch for switching to any one is provided in the dimming / lighting unit main body, and when a predetermined reset signal is input via the connection terminal, the accumulated lighting time measured by the time measuring means is reset and timed operation is performed. Provided reset means to resumeIt is characterized by1Dimming function and stage dimming functionAnd light flux correction functionCan be functionalIn addition, the operation mode of the discharge lamp lighting device can be switched to a desired operation mode using the first changeover switch. In addition, by inputting a predetermined signal as a dimming signal to a plurality of discharge lamp lighting devices, the accumulated lighting time measured by the timing means of each discharge lamp lighting device can be reset at once, and the effort required for the reset operation There is an effect that can be reduced.
[0085]
  Claim2The invention of claim 1 is characterized in that, in the invention of claim 1, a second changeover switch for changing the operation mode of the step dimming means to a plurality of is provided in the dimming lighting unit body, and the second changeover switch is provided. This has the effect that the operation mode of the step dimmer can be switched to a desired operation mode.
[0088]
  Claim3The invention is a lighting fixture using the discharge lamp lighting device according to claim 1,A reset switch connected to the connection terminal and generating the reset signal in response to a reset operationThe reset switch is provided on the surface of the instrument main body that holds the discharge lamp, the dimming / lighting unit, the time measuring means, the correction means, and the reset means, and the reset switch is provided on the surface of the instrument main body. Therefore, the reset switch can be operated from the outside of the instrument body, and there is an effect that the lighting accumulated time can be easily reset.
[0089]
  Claim4The invention of claim3In the invention of, The connectionA connecting terminal is provided in the vicinity of the power input terminal of the dimming lighting unit, and since a high frequency voltage is generated on the output side of the dimming lighting unit, the connection terminal of the reset switch is connected to the output side. It is easy to be affected by noise when it is provided near, but the reset switch connection terminal is provided near the power input terminal, so it can be less affected by noise than when it is provided near the output side. effective.
[0090]
  Claim5The invention of claim3 or 4In the invention of the present invention, the reflector body is arranged around the discharge lamp, and reflects the light of the discharge lamp and distributes the light in a desired direction in the instrument body, wherein the reset switch is attached to the reflector plate, Since the reset switch is attached to the reflecting plate, the reset switch can be operated from the outside of the instrument body, and there is an effect that it is possible to easily reset the lighting accumulated time.
[0091]
  Claim6The invention of claimAny of 3 to 5In the invention of the present invention, the reset switch is open at the time of steady state and closed at the time of reset. Between the terminals of the reset switch is open at the time of steady state, noise is generated between the terminals of the reset switch at the time of steady state. There is an effect that it is possible to prevent malfunctioning while riding.
[0092]
  Claim7The invention of claim6According to the invention, the voltage across the terminals of the reset switch is set to approximately 3 V or more in the open state and approximately 1 V or less in the closed state.6The same effect as that of the present invention can be obtained.
[0093]
  Claim8The invention of claim3In the invention ofThe dimming lighting unit has the function of the continuous dimming mode, the step dimming mode, the initial illuminance correction mode, or the dimming lighting unit according to the switching state of the first changeover switch. While switching to one of the test modes to be inspected, and when a predetermined signal is input to the connection terminal in the test mode, the dimming lighting unit performs an operation for function confirmationThe advantage is that the number of components can be reduced by sharing each terminal.
[Brief description of the drawings]
[Figure 1]1 shows a basic configuration of a discharge lamp lighting device according to the present invention.It is a circuit diagram.
[Figure 2]Reference exampleIt is a circuit diagram of the discharge lamp lighting device.
FIG. 3 is a flowchart for explaining the operation described above.
FIG. 4 Embodiment1It is a circuit diagram of the discharge lamp lighting device.
FIG. 5 is a block diagram that can be partially omitted.
FIG. 6 is a flowchart illustrating the operation described above.
FIG. 72It is a flowchart explaining operation | movement of this discharge lamp lighting device.
FIG. 83It is a flowchart explaining operation | movement of this discharge lamp lighting device.
FIG. 94FIG.
FIG. 10 is a perspective view of an external appearance of a partially broken other lighting fixture according to the present invention.
FIG. 11 is a perspective view of an external appearance in which another lighting apparatus is partially broken.
FIG. 12 is an embodiment.5(A) is a front view, (b) is a side view seen from the right side, and (c) is a side view seen from the lower side.
FIG. 13 is a circuit diagram of a conventional discharge lamp lighting device.
FIG. 14 is a circuit diagram of another conventional discharge lamp lighting device.
FIG. 15 is a circuit diagram of another conventional discharge lamp lighting device.
FIG. 16 is a flowchart showing the operation of the above.
FIG. 17 is an external perspective view of the above.
[Explanation of symbols]
  2 Inverter circuit
  10 Control unit
  11 Inverter control unit
  12 V / F converter
  CN1a, CN1b connection terminal
  La discharge lamp
  SW1 stage dimming selector switch
  SW3 mode selector switch

Claims (8)

A discharge lamp, a dimming lighting unit for dimming and lighting the discharge lamp, a time measuring means for measuring the accumulated lighting time of the discharge lamp, and correction of light flux deterioration that occurs as the accumulated lighting time elapses according to the time measurement result of the time measuring means A correction means for setting the dimming level and a connection terminal for inputting a signal from the outside , wherein the dimming lighting part is a dimming signal input via the connection terminal or the correction means The dimming means for continuously dimming the discharge lamp based on any one of the dimming levels set by the control unit, and the discharge based on the contact signal of the dimming level switching contact input via the connection terminal. A step dimming unit for dimming the electric lamp, and an operation mode of the dimming lighting unit, and a continuous dimming mode in which the continuous dimming unit continuously dims the discharge lamp based on the dimming signal. The step dimming means is based on the contact signal. One of a step dimming mode in which the discharge lamp is dimmed and an initial illuminance correction mode in which the continuous dimming means controls the dimming level of the discharge lamp based on the dimming level set by the correcting means. The dimming / lighting unit main body is provided with a first changeover switch for switching to, and when a predetermined reset signal is input through the connection terminal, the lighting accumulated time measured by the time measuring means is reset and the time measuring operation is resumed. A discharge lamp lighting device comprising a reset means for causing the discharge lamp to be turned on. The discharge lamp lighting device according to claim 1, wherein a second switch for switching the operation mode of the step dimming means to a plurality is provided in the dimming / lighting unit main body . A lighting fixture using the discharge lamp lighting device according to claim 1, comprising a reset switch connected to the connection terminal and generating the reset signal in response to a reset operation, and comprising a discharge lamp, a dimming lighting section, and a timing means A lighting fixture comprising the reset switch provided on a surface of a fixture main body holding the correcting means and the resetting means. The lighting fixture according to claim 3, wherein the connection terminal is provided in the vicinity of a power input terminal of the dimming / lighting unit. 4. A reflector plate disposed around the discharge lamp and reflecting the light of the discharge lamp to distribute light in a desired direction is provided in the fixture body, and the reset switch is attached to the reflector plate. 4. The lighting apparatus according to 4. The lighting apparatus according to claim 3, wherein the reset switch is in an open state at a steady state and closed in a reset state. The lighting fixture according to claim 6, wherein a voltage between the terminals of the reset switch is set to approximately 3 V or more in the open state and approximately 1 V or less in the closed state . The dimming lighting unit has the function of the continuous dimming mode, the step dimming mode, the initial illuminance correction mode, or the dimming lighting unit according to the switching state of the first changeover switch. Switching to one of the test modes to be inspected, and when a predetermined signal is input to the connection terminal in the test mode, the dimming lighting unit performs an operation for function confirmation. Item 4. A lighting apparatus according to item 3 .

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