JP4505962B2

JP4505962B2 - Lighting control apparatus and lighting apparatus using the same

Info

Publication number: JP4505962B2
Application number: JP2000233763A
Authority: JP
Inventors: 和史長添; 智美橋本
Original assignee: Panasonic Corp; Matsushita Electric Works Ltd
Current assignee: Panasonic Corp; Panasonic Electric Works Co Ltd
Priority date: 2000-08-01
Filing date: 2000-08-01
Publication date: 2010-07-21
Anticipated expiration: 2020-08-01
Also published as: JP2002050490A

Description

【０００１】
【発明の属する技術分野】
本発明は、人体検知手段を有して自動的に点灯制御を行う照明制御装置及びそれを用いた照明器具に関するものである。
【０００２】
【従来の技術】
従来から、トイレ等に設置され、人体検知手段を有し、人が近傍に存在すると自動的に点灯し、人が遠ざかると自動的に消灯する照明制御装置及びそれを用いた照明器具は存在した。
【０００３】
ここで使用される人体検知手段を構成する人体検知センサは、主に超音波センサ、測距センサ、焦電センサ（熱線センサ、ＰＩＲ）が使われる。
【０００４】
超音波センサと測距センサは各々超音波、赤外線を出力して、人体に当たって反射して戻ってくるまでの時間、または三角法によって反射角度を測定することで、人体の存在や人体までの距離を検知する能動型センサ（アクティブタイプセンサ）である。このタイプのセンサの長所は、人体が完全に静止していても確実に人体の存在検知ができることである。短所は、検知範囲（検知角度）が狭いこと、センサ稼動時の消費電力が比較的大きいこと、及び周辺回路を含めたコストが高いことである。
【０００５】
焦電センサは人体の体温により発生する遠赤外線の変化量を検知して人体の移動を検知するセンサであり、センサ自身からは何も出力しない受動型センサ（パッシブタイプセンサ）である。このタイプのセンサの長所は、検知範囲（検知角度）が比較的広いこと、センサ稼動時の消費電力が比較的小さいこと、壁などの人体以外の物体の誤検知が少ないこと、及び周辺回路を含めたコストが比較的安いことである。短所は、熱量の変化を検知するセンサであるので人体が完全に静止すると人体の存在検知ができないことである。
【０００６】
最近は、前記のような各センサの特徴を考慮して、能動型センサは洗面所のミラーライト等のように人体が必ず正面に位置する部位の照明制御装置及びそれを用いた照明器具に利用され、また受動型センサは廊下等の移動空間の照明制御装置及びそれを用いた照明器具に利用されることが多い。
【０００７】
また、玄関やトイレ等のように人体が静止する可能性があり、且つ一定以上の検知範囲（検知角度）が必要な部位の照明制御装置及びそれを用いた照明器具では受動型センサである焦電センサを使用し、人体の静止時のセンサ不動作対策として数十秒から数分の範囲で動作するタイマ回路を使用して、焦電センサにより人体の存在検知をして照明負荷を点灯させた後、前記タイマ回路が計時動作中は点灯状態を保持して、前記タイマ回路が計時動作を終了した後（タイムアップ後）消灯させる照明制御方式が用いられている。なお、以後このタイマの動作時間を点灯保持時間と呼ぶ。また、能動型センサを使用する場合においても、検知範囲（検知角度）が狭いという短所を補う理由で前記同様にタイマ回路によって一定時間点灯保持する照明制御方式が用いられている。
【０００８】
そして、前記点灯保持時間は通常固定、あるいはボリューム等を用いて手動調整が一般的であるが、特開平７−３１２２９５号公報で開示されているように人体の存在検知の検知間隔に応じて前記点灯保持時間を自動的に調整する照明制御方式も提案されている。
【０００９】
【発明が解決しようとする課題】
従来の照明制御装置及びそれを用いた照明器具では、人体の静止時のセンサ不動作対策として十分な点灯保持時間を設定する必要から、その場を立ち去った後（トイレでは退室後）人体が照明制御装置及びそれを用いた照明器具の周辺に存在しないにも関わらず点灯保持時間が終了するまで無駄に点灯する問題があった。
【００１０】
特開平７−３１２２９５号公報で開示されている発明では、人体検知手段の検知間隔に応じて柔軟に点灯保持時間を調整するため、無駄に点灯する時間は点灯保持時間固定の照明制御方式より短いと考えられる。焦電センサは熱（体温）の変化を検知するセンサであるから人間の移動速度が速ければ検知回数が多くなり点灯保持時間は短くなり、例えば人間が移動してから急に立ち止まった時には点灯保持時間が短くなっているので、人体が存在しているのにも関わらず誤消灯する可能性が高い。また、点灯時常に人体検知手段の検知間隔を比較する必要があり制御が複雑になる。
【００１１】
本発明は、上記事由に鑑みてなされたものであり、その目的は、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置及びそれを用いた照明器具を提供することにある。
【００１２】
【課題を解決するための手段】
請求項１の発明は、照明負荷と、前記照明負荷の点灯を制御する点灯制御回路部と、人体の存在を検知する人体検知手段と、点灯保持時間と再点灯時間とを計時するタイマ回路部と、前記人体検知手段の出力信号と前記タイマ回路部の計時状態とに基づいて前記点灯制御回路部を制御する制御回路部と、前記各回路部と前記手段とに電力を供給する電源回路部とから構成され、前記制御回路部は、前記人体検知手段が人体の存在を検知した時点から前記点灯保持時間の間前記照明負荷を点灯させるよう前記点灯制御回路部を制御し、前記照明負荷の点灯中に前記人体検知手段が人体の存在を検知した時は、前記照明負荷の点灯中に前記人体検知手段が人体の存在を検知した時点から前記点灯保持時間の間前記照明負荷を点灯させるよう前記点灯制御回路部を制御し、前記タイマ回路部は、前記照明負荷の点灯終了後から前記再点灯時間の間に前記人体検知手段が人体の存在を検知した結果に基づいて前記点灯保持時間を長くすることを特徴とし、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができる。
【００１３】
請求項２の発明は、請求項１の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間に人体検知手段が人体の存在を検知すると、前記点灯保持時間を所定の点灯保持時間より長くすることを特徴とし、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができる。
【００１４】
請求項３の発明は、請求項１の発明において、照明負荷の点灯終了後から前記再点灯時間の間に人体検知手段が人体の存在を検知した回数をカウントするカウンタ回路部を備え、タイマ回路部は、前記カウンタ回路部がカウントした回数が所定の回数に達すると前記点灯保持時間を所定の点灯保持時間より長くすることを特徴とし、カウンタ回路部を用いた簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができる。
【００１５】
請求項４の発明は、請求項１の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間に人体検知手段が人体の存在を検知する毎に、前記点灯保持時間を前回の点灯保持時間より長くすることを特徴とし、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができる。
【００１６】
請求項５の発明は、請求項３の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間にカウンタ回路部がカウントした人体検知手段が人体の存在を検知した回数が増える毎に、前記点灯保持時間を前回の点灯保持時間より長くすることを特徴とし、カウンタ回路部を用いた簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができる。
【００１７】
請求項６の発明は、請求項１の発明において、少なくとも２個以上の人体検知手段を備え、制御回路部は、照明負荷の点灯終了後、前記再点灯時間が経過した後に少なくとも２個以上の前記人体検知手段が同時に人体の存在を検知すると、照明負荷を点灯させるように点灯制御回路部を制御することを特徴とし、小動物や暖房機器等による人体の存在検知の誤動作を防いで信頼性向上を図ることができる。
【００１８】
請求項７の発明は、請求項６の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間に少なくとも１個以上の人体検知手段が人体の存在を検知すると、前記点灯保持時間を長くすることを特徴とし、一度点灯すると、人が存在するにも関わらず消灯する誤消灯、及び人が存在するにも関わらず調光する誤調光を可能な限り防止し、信頼性向上を図ることができる。
【００１９】
請求項８の発明は、請求項１の発明において、人体検知手段は人体までの距離を測定できる波動の反射を利用した能動型センサから構成され、人体を検知した時の前記人体までの距離に応じて前記能動型センサの波動出力を下げることを特徴とし、消費電力を低減させることができる。
【００２０】
請求項９の発明は、請求項１の発明において、制御回路部は、照明負荷を点灯させるとき以外は照明負荷を調光させるよう点灯制御回路部を制御することを特徴とし、完全に消灯させると危険な部位に設置することができる。
【００２１】
請求項１０の発明は、請求項１の発明において、照明負荷は放電灯で構成され、制御回路部は、前記放電灯の点灯終了後から前記再点灯時間の間は前記放電灯を予熱するよう点灯制御回路部を制御することを特徴とし、放電灯を予熱しておくことで誤消灯時においても即座に再点灯させて、ユーザの不快感を最小限に抑えることができる。
【００２２】
請求項１１の発明は、請求項１乃至１０いづれか記載の照明制御装置を内蔵したことを特徴とし、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明器具を提供することができる。
【００２３】
請求項１２の発明は、請求項１１の発明において、形状が卓上自立型であることを特徴とし、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない卓上自立型の照明器具を提供することができる。
【００２４】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
【００２５】
（実施形態１）
本実施形態１の構成を図１に示し、動作を示すタイムチャートを図２に示す。本実施形態１は、白熱灯からなる照明負荷４と、スイッチング素子としてトライアックを含み照明負荷４を点灯制御する点灯制御回路部３と、受動型センサである焦電センサとアンプＩＣとで構成され人体の存在を検知して人体検知信号を出力する人体検知手段７と、タイマ用ＩＣからなり人体検知手段７から出力された人体検知信号を入力された時点から所定の点灯保持時間Ｔ１またはＴ１´を計時する点灯保持タイマ機能及び点灯保持時間Ｔ１またはＴ１´の計時が終了した時点から所定の再点灯時間Ｔ２を計時する再点灯タイマ機能を有するタイマ回路部６と、マイクロコンピュータ等からなり人体検知手段７から出力される人体検知信号とタイマ回路部６から出力される点灯保持時間Ｔ１、Ｔ１´及び再点灯時間Ｔ２の各計時状態とに基づいて点灯制御回路部３を制御する制御回路部５と、前記各回路部と手段とに交流電源１を整流平滑、降圧した電力を供給する電源回路部２とから構成される。なお、タイマ回路部６は制御回路部５のマイクロコンピュータで実現してもよい。
【００２６】
ここで、図２（ａ）は人体検知手段７から出力される人体検知信号、図２（ｂ）はタイマ回路部６の点灯保持タイマ機能の計時状態、図２（ｃ）はタイマ回路部６の再点灯タイマ機能の計時状態、図２（ｄ）は照明負荷４の状態の各タイムチャートを示す。時点Ｓ１において照明負荷４が消灯している状態で人体検知手段７が人体の存在を検知して人体検知信号を出力すると、制御回路部５は点灯制御回路部３を制御して照明負荷４を点灯させ、制御回路部５を介して人体検知信号を入力されたタイマ回路部６は点灯保持タイマ機能により点灯保持時間Ｔ１の計時を開始する。以後タイマ回路部６の点灯保持タイマ機能が点灯保持時間Ｔ１またはＴ１´の計時を行っている間、制御回路部５は点灯制御回路部３を制御して照明負荷４を点灯させる。タイマ回路部６の点灯保持タイマ機能が点灯保持時間Ｔ１の計時中である時点Ｓ２において人体検知手段７が人体の存在を検知して人体検知信号を出力すると、タイマ回路部６の点灯保持タイマ機能は時点Ｓ２から点灯保持時間Ｔ１の計時を再び開始し、制御回路部５は点灯制御回路部３を制御して照明負荷４の点灯をそのまま保持する。時点Ｓ２から点灯保持時間Ｔ１が経過して点灯保持タイマ機能の計時が終了する時点Ｓ３まで人体検知手段７が人体の存在を検知しなければ、時点Ｓ３において制御回路部５は点灯制御回路部３を制御して照明負荷４を消灯させて、タイマ回路部６の再点灯タイマ機能は再点灯時間Ｔ２の計時を開始する。時点Ｓ４において、再点灯時間Ｔ２の計時中に人体検知手段７が人体を再検知して人体検知信号を出力すると、制御回路部５は点灯制御回路部３を制御して照明負荷４を点灯させて、タイマ回路部６の点灯保持タイマ機能は前回の点灯保持時間Ｔ１よりも長い点灯保持時間Ｔ１´の計時を開始する。すなわち、消灯後、再点灯時間Ｔ２の計時中に人体検知手段７が人体の存在を再検知するのは、人がその場にいるにも関わらず、人体検知手段７の検知範囲が狭いため、あるいは本実施形態１のように人体検知手段７の人体検知センサに焦電センサを用いている場合に人が静止してしまったために人体検知手段７が人体の存在を検知できない人体不検知現象のために誤消灯したと判断し、点灯保持時間を長くして誤消灯を防止する方向に制御する。ここでもし、時点Ｓ３からの再点灯時間Ｔ２の計時終了後に人体検知手段７が人体検知信号を出力した場合は、タイマ回路部６の点灯保持タイマ機能は前回と同じ点灯保持時間Ｔ１を計時する。次に時点Ｓ４から点灯保持時間Ｔ１´が経過した時点Ｓ５までに人体検知手段７が人体の存在を検知しない場合は、時点Ｓ５において制御回路部５は点灯制御回路部３を制御して照明負荷４を消灯させて、再点灯時間Ｔ２の計時が開始される。この時点Ｓ５から再点灯時間Ｔ２が経過するまで人体検知手段７が人体の存在を再検知しない場合は、次に人体の存在を検知した時点Ｓ６において、制御回路部５は点灯制御回路部３を制御して照明負荷４を点灯させて、タイマ回路部６の点灯保持タイマ機能は点灯保持時間Ｔ１´をリセットして再び点灯保持時間Ｔ１にて計時を開始する。時点Ｓ６から点灯保持時間Ｔ１が経過するまで人体検知手段７が人体の存在を検知しない場合には時点Ｓ６から点灯保持時間Ｔ１が経過した時点Ｓ７にて照明負荷４は消灯し、再点灯時間Ｔ２の計時が開始される。点灯保持時間Ｔ１、Ｔ１´は使用される部位やユーザによって異なるためボリューム等で調整できることが望ましい。例えば、点灯保持時間Ｔ１は３０秒から数分程度、点灯保持時間Ｔ１´はＴ１＋３０秒、再点灯時間Ｔ２は５秒程度が一般的である。
【００２７】
本実施形態１では、例えば時点Ｓ５から再点灯時間Ｔ２が経過するまでに人体検知手段７が人体の存在を再検知したとしても点灯保持タイマ機能は前回の計時と同様に点灯保持時間Ｔ１´で計時を開始するが、人体検知手段７が連続して人体の存在を再検知した場合は、再検知回数が増える毎に点灯保持時間を延長してもよい。また、本実施形態１では照明負荷４として白熱灯を用いているが、蛍光灯やＬＥＤを用いてもよい。
【００２８】
このように本実施形態１によれば、人体検知手段７の人体不検知現象があった場合には次の点灯保持時間を長く設定し、また初期の点灯保持時間Ｔ１を必要と予想される最短時間に設定することにより、簡単な構成、制御で人間が周辺を離れたときはすみやかに消灯することにより不要な点灯による電力消費を抑え、誤消灯を可能な限り防止して使用者の利便性を損なわない照明制御装置及びそれを用いた照明器具を提供することができる。
【００２９】
（実施形態２）
本実施形態２の構成を図３に示し、動作を示すタイムチャートを図２に示す。前記実施形態１とは基本的な構成は同一であり、同一の構成、要素には同一の符号を付して説明は省略する。本実施形態２において、制御回路部５と接続されるカウンタ回路部８は、カウンタを有し、照明負荷４の点灯が終了してタイマ回路部６の再点灯タイマ機能が再点灯時間Ｔ２の計時中に人体検知手段７が人体の存在を検知する再検知が発生するとカウンタが１回カウントアップする。そして再検知が２回発生し、カウンタが２回カウントアップするとタイマ回路部６の点灯保持タイマ機能は前回の点灯保持時間Ｔ１よりも長い点灯保持時間Ｔ１´を計時して、点灯保持時間を長くして誤消灯を防止する方向に制御する。また人体検知手段７は、ドップラー効果による超音波の反射波の周波数の違いを利用して人体の移動（主に接近移動）を検知するセンサである。
【００３０】
そして本実施形態２の照明負荷４は蛍光灯であり、点灯制御回路部３は蛍光灯点灯回路で構成され、点灯制御回路部３と照明負荷４とは図５の回路構成で示される。交流電源１を整流器ＤＢで全波整流し、電解コンデンサＣ１で平滑して直流電源を得る。電解コンデンサＣ１に並列にインダクタＬ１とコンデンサＣ２との直列回路が接続され、インダクタＬ１に並列にコンデンサＣ３とインダクタＬ２との直列回路が接続され、コンデンサＣ３に並列に蛍光灯である照明負荷４が接続される。コンデンサＣ２に並列にダイオードＤ１とスイッチング素子Ｑ１とが接続され、スイッチング素子Ｑ１には駆動回路Ｋ１が接続される。この回路は一般に一石式インバータと呼ばれる電圧共振型のインバータ回路であり、駆動回路Ｋ１でスイッチング素子Ｑ１のオンデューティを制御することで電解コンデンサＣ１から供給される直流電力を高周波電力に変換して照明負荷４に高周波電流を供給し、スイッチング素子Ｑ１のオンデューティを変化させることで調光制御を行うことができる。例えば、スイッチング素子Ｑ１のオンデューティを小さくすることで調光比を下げることができる。またコンデンサＣ３は予熱用のコンデンサであり、照明負荷４を構成する蛍光灯が点灯（放電）を開始するまでの予熱時には高周波の予熱電流がコンデンサＣ３を介して照明負荷４を構成する蛍光灯のフィラメントを流れる。この予熱時にはスイッチング素子Ｑ１のオンデューティを予熱期間だけ小さくしてコンデンサＣ３を介して照明負荷４を構成する蛍光灯のフィラメントに予熱電流を流して十分に予熱して、その後スイッチング素子Ｑ１のオンデューティを大きくすることで照明負荷４の両端電圧を始動電圧以上にして点灯させる。本実施形態２では一石式インバータ回路を用いているが、調光制御と予熱期間の制御とが可能なハーフブリッジ式のインバータ回路、及び銅鉄式の安定器回路であってもよい。
【００３１】
ここで、図４（ａ）は人体検知手段７から出力される人体検知信号、図４（ｂ）はタイマ回路部６の点灯保持タイマ機能の計時状態、図４（ｃ）はタイマ回路部６の再点灯タイマ機能の計時状態、図４（ｄ）は照明負荷４の状態の各タイムチャートを示す。時点Ｓ１０において照明負荷４が消灯している状態で、人体検知手段７が人体の存在を検知して人体検知信号を出力すると、制御回路部５は点灯制御回路部３を制御して照明負荷４を予熱し点灯させ、制御回路部５を介して人体検知信号を入力されたタイマ回路部６は点灯保持タイマ機能により点灯保持時間Ｔ１の計時を開始する。以後タイマ回路部６の点灯保持タイマ機能が点灯保持時間Ｔ１またはＴ１´の計時を行っている間、制御回路部５は点灯制御回路部３を制御して照明負荷４を点灯させる。時点Ｓ１０から点灯保持時間Ｔ１が経過する時点Ｓ１１まで人体検知手段７が人体の存在を検知しなければ、時点Ｓ１１からタイマ回路部６の再点灯タイマ機能が再点灯時間Ｔ２の計時を行う。このタイマ回路部６の再点灯タイマ機能が再点灯時間Ｔ２の計時を行っているとき、制御回路部５は点灯制御回路部３を制御して照明負荷４を完全には消灯させず予熱状態にしておく（予熱状態時には照明負荷４は点灯していない）。これは、再点灯時間Ｔ２の計時中に人体検知手段７が人体を再検知して人体検知信号を出力するときは誤消灯であったと考えられるので、照明負荷４を予熱状態にしておいて人体検知手段７が人体の存在を再検知したら少しでも早く再点灯をさせて、ユーザの不快感を最小限に抑えるためである。時点Ｓ１２において、再点灯タイマ機能が再点灯時間Ｔ２の計時を終了すると、制御回路部５は点灯制御回路部３を制御して照明負荷４の予熱状態を解除して完全に消灯させる。時点Ｓ１３において、人体検知手段７が人体の存在を検知して人体検知信号を出力すると、時点Ｓ１０同様に制御回路部５は照明負荷４を予熱して点灯させる。タイマ回路部６の点灯保持タイマ機能が点灯保持時間Ｔ１の計時中である時点Ｓ１４において、人体検知手段７が人体の存在を検知して人体検知信号を出力すると、タイマ回路部６の点灯保持タイマ機能は時点Ｓ１４から点灯保持時間Ｔ１の計時を再び開始し、制御回路部５は点灯制御回路部３を制御して照明負荷４の点灯をそのまま保持する。時点Ｓ１４から点灯保持時間Ｔ１が経過する時点Ｓ１５まで人体検知手段７が人体の存在を検知しなければ、時点Ｓ１５において制御回路部５は点灯制御回路部３を制御して照明負荷４を予熱状態にして、タイマ回路部６の再点灯タイマ機能が再点灯時間Ｔ２の計時を開始する。時点Ｓ１６において、再点灯タイマ機能が再点灯時間Ｔ２の計時中に人体検知手段７が人体を再検知して人体検知信号を出力すると、カウンタ回路部８のカウンタはカウントアップし、１をカウントする。そして制御回路部５は点灯制御回路部３を制御して予熱状態であった照明負荷４をすぐ点灯させ、制御回路部５を介して人体検知信号を入力されたタイマ回路部６は点灯保持タイマ機能により点灯保持時間Ｔ１の計時を開始する。時点Ｓ１７において照明負荷４は点灯状態から予熱状態になり、タイマ回路部６の再点灯タイマ機能が再点灯時間Ｔ２の計時を開始する。時点Ｓ１８において、再点灯時間Ｔ２の計時中に人体検知手段７が人体を再検知して人体検知信号を出力すると、カウンタ回路部８のカウンタはカウントアップし、２をカウントする。本実施形態２ではカウンタ回路部８のカウンタが２回カウントアップして２をカウントすると、制御回路部５は点灯制御回路部３を制御して予熱状態であった照明負荷４をすぐ点灯させ、制御回路部５を介して人体検知信号を入力されたタイマ回路部６は誤消灯を防止するために点灯保持タイマ機能により前回の点灯保持時間Ｔ１よりも長い点灯保持時間Ｔ１´の計時を開始する。時点Ｓ１８から点灯保持時間Ｔ１´が経過した時点Ｓ１９までに人体検知手段７が人体の存在を検知しない場合は、時点Ｓ１９において前記同様照明負荷４は予熱状態になり、再点灯時間Ｔ２の計時が開始される。
【００３２】
なお、本実施形態２では、カウンタ回路部８のカウンタが２回カウントアップすると誤消灯防止のために点灯保持時間を延長しているが、カウントアップの回数は２回に限定しておらず、任意の回数カウントアップすれば点灯時間Ｔ１を長くしてもよい。またカウンタ回路部６のカウンタがカウンタアップする毎に点灯保持時間を延長してもよい。
【００３３】
図６は本実施形態２の照明制御装置を内蔵して、机やテーブル上に設置して使用する卓上自立型の照明器具の外形図を示す。電源回路部２、点灯制御回路３、制御回路部５、タイマ回路部６及びカウンタ回路部８を内蔵し、電源コード２４を介して交流電源と接続される台座２０と、台座２０の表面に配置された操作スイッチ２３と、台座２０後部から上方に向かって設置され、台座２０の前部側に人体検知手段７を備え、且つ点灯制御回路部３と照明負荷４との間の配線を内部に備えた支柱２１と、支柱２１の上端に設置され、下面に蛍光灯である照明負荷４を備えた蛍光灯取付け部２２とから構成される。
【００３４】
（実施形態３）
本実施形態３の構成を図７に示し、動作を示すタイムチャートを図８に示す。前記実施形態２と同一の構成、要素には同一の符号を付して説明は省略する。本実施形態３では、点灯制御回路部３は一定の調光比で照明負荷４を調光する調光制御を行うことができ、完全に消灯すると危険な部位に設置するため照明負荷４を点灯させていないときは調光状態にしておく。また、照明器具１００と送信機１０１とに分離され、各々が人体検知手段を有している。送信機１０１は、第１の人体検知手段７ａと、送信制御回路部１１と、送信タイマ回路部１２と、送信回路部１０と送信電源回路部（図示せず）とを内蔵している。送信電源回路部は、電池等で構成され送信機１０１の前記各回路部と手段とに電力を供給する。第１の人体検知手段７ａは、能動型センサであり、本実施形態３では出力した赤外線が反射して戻ってきたときの反射角から人体との距離を測定して人体の存在を検知する測距センサからなり、その検知動作はタイマ用ＩＣで構成された送信タイマ回路部１２により検知動作間隔Ｔ３にて離散的に行うよう制御され、人体の存在を検知したときには第１の人体検知信号を出力する。送信制御回路部１１はマイクロコンピュータ等で構成され、送信回路部１０の送信動作を制御する。送信回路部１０は、赤外ＬＥＤやトランジスタ等で構成され、周知の赤外リモコン送信機と同様の手段で、第１の人体検知信号に基づいたリモコン送信信号を照明器具１００内の受信回路部９に送信する。また照明器具１００は、受動型センサである焦電センサからなる第２の人体検知手段７ｂを有している。なお送信タイマ回路部１２は、送信制御回路部１１のマイクロコンピュータで実現してもよい。また、送信機１０１には点灯保持時間Ｔ１、Ｔ１´を手動で設定できる設定スイッチを設けてもよい。
【００３５】
ここで、図８（ａ）は測距センサからなる第１の人体検知手段７ａの赤外線出力、図８（ｂ）は第１の人体検知手段７ａから出力される第１の人体検知信号、図８（ｃ）は送信回路部１０から送信されるリモコン送信信号、図８（ｄ）は第２の人体検知手段７ｂから出力される第２の人体検知信号、図８（ｅ）はタイマ回路部６の点灯保持タイマ機能の計時状態、図８（ｆ）はタイマ回路部６の再点灯タイマ機能の計時状態、図８（ｇ）は照明負荷４の状態の各タイムチャートを示す。
【００３６】
図８（ａ）に示すように第１の人体検知手段７ａが、送信タイマ回路部１２で計時する時間Ｔ３の間隔で赤外線を出力して人体の存在の検知動作を行い、時点Ｓ２０において、第１の人体検知手段７ａは人体の存在を検知して第１の人体検知信号を出力し、送信制御回路部１１は第１の人体検知信号が出力されている間、送信回路部１０を制御して一定間隔のリモコン送信信号を受信回路部９に送信させ、受信回路部９は受信したリモコン送信信号をデジタル信号に変換して制御回路部５に入力する。そして時点Ｓ２１において受信回路部９が受信したリモコン送信信号と第２の人体検知手段７ｂから出力された第２の人体検知信号とが同時に制御回路部５に入力されると、制御回路部５は点灯制御回路部３を制御して照明負荷４を調光状態から点灯させ、タイマ回路部６は点灯保持タイマ機能により点灯保持時間Ｔ１の計時を開始する。即ち、第２の人体検知手段７ｂの焦電センサで人体であることを検知し、第１の人体検知手段７ａの測距センサで所定の距離にまで接近したことを検知して第１及び第２の人体検知手段７ａ、７ｂから各人体検知信号が同時に入力されて照明負荷４は調光状態から点灯することにより、小動物や暖房機器等による誤動作を防ぐ。以後タイマ回路部６の点灯保持タイマ機能が点灯保持時間Ｔ１またはＴ１´の計時を行っている間、制御回路部５は点灯制御回路部３を制御して照明負荷４を点灯させる。点灯後は、タイマ回路部６の点灯保持タイマ機能が点灯保持時間Ｔ１の計時中である時点Ｓ２２〜２５のように第１の人体検知手段７ａまたは第２の人体検知手段７ｂの内どちらか一方が人体検知信号を出力すると、タイマ回路部６の点灯保持タイマ機能は各時点Ｓ２２〜２５から点灯保持時間Ｔ１の計時を再び開始し、制御回路部５は点灯制御回路部３を制御して照明負荷４の点灯をそのまま保持する。時点Ｓ２５から点灯保持時間Ｔ１が経過する時点Ｓ２６まで人体検知手段７ａまたは人体検知手段７ｂが人体の存在を検知しなければ、時点Ｓ２６において制御回路部５は点灯制御回路部３を制御して照明負荷４を完全には消灯させず調光状態にして、タイマ回路部６の再点灯タイマ機能は再点灯時間Ｔ２の計時を開始する。時点Ｓ２７において、再点灯時間Ｔ２の計時中に第１の人体検知手段７ａまたは第２の人体検知手段７ｂの内どちらか一方が人体の存在を再検知して人体検知信号を出力すると、制御回路部５は点灯制御回路部３を制御して調光状態であった照明負荷４を点灯させ、タイマ回路部６は誤調光を防止するために点灯保持タイマ機能により前回の点灯保持時間Ｔ１よりも長い点灯保持時間Ｔ１´の計時を開始する。点灯後は、タイマ回路部６の点灯保持タイマ機能が点灯保持時間Ｔ１´の計時中である時点Ｓ２８〜３１のように第１の人体検知手段７ａまたは第２の人体検知手段７ｂの内どちらか一方が人体検知信号を出力すると、タイマ回路部６の点灯保持タイマ機能は各時点Ｓ２８〜３１から点灯保持時間Ｔ１´の計時を再び開始し、制御回路部５は点灯制御回路部３を制御して照明負荷４の点灯をそのまま保持する。時点Ｓ３１から点灯保持時間Ｔ１´が経過する時点Ｓ３２まで第１の人体検知手段７ａまたは第２の人体検知手段７ｂが人体の存在を検知しなければ、時点Ｓ３２において制御回路部５は点灯制御回路部３を制御して照明負荷４を完全には消灯させず、調光状態にしておく。
【００３７】
このように本実施形態３では、タイマ回路部６の再点灯タイマが計時を行っていない調光状態では第１の人体検知手段７ａと第２の人体検知手段７ｂとが同時に人体の存在を検知すると照明負荷４は点灯し、点灯後はどちらか一方の人体検知手段の人体検知信号によって点灯を保持し、また再点灯タイマが計時を行っている調光状態ではどちらか一方の人体検知手段の人体検知信号によって再点灯する。したがって、一度点灯すると人が存在するのに調光状態になる誤調光を防止する方向に制御するので信頼性向上を図ることができる。また、能動型の第１の人体検知手段７ａを分離して第１の人体検知信号を無線で送信することにより、第１の人体検知手段７ａを人体が静止する場所の近くに設置できるため、検知範囲が狭くても確実に人体の存在を検知することができ、検知するための赤外線の出力を必要最小限に下げることができる。そして、前記赤外線の出力を必要最小限に下げること及び第１の人体検知手段７ａが検知動作を連続的ではなく離散的に行うことによって消費電力を低減させることができる。そのため、送信電源回路部（図示せず）を電池で構成して送信機１０１の前記各回路部、手段を電池駆動することができる。本実施形態３では、第１の人体検知センサ７ａを赤外線の反射角から人体の存在の検知を行う測距センサとしたが、超音波が反射して戻ってくる時間で人体の存在の検知を行う超音波センサでもよい。
【００３８】
また、測距センサや超音波センサを用いた第１の人体検知手段７ａは、人体の存在を検知したときの人体との距離に応じて次回に出力する赤外線や超音波の出力を下げることによりさらに消費電力を低減させることができる。即ち、調光状態に移行した直後は壁までの距離を測定しているのでその時に測定した距離を記憶しておき、その次に第２の人体検知手段７ｂが人体の存在を検知して照明負荷４が点灯した時に測定した人体との距離が前記記憶した距離より短い距離であれば、その距離が人体までの距離であるので、次回からの赤外線や超音波の出力を前記人体までの距離を測定することのできる最小限の出力に下げることができる。その結果さらに消費電力を低減させることができる。
【００３９】
なお、本実施形態３では第１の人体検知手段７ａを測距センサとしたが、ドアの開閉を検知することによって人体の存在を検知するセンサであってもよい。
【００４０】
【発明の効果】
請求項１の発明は、照明負荷と、前記照明負荷の点灯を制御する点灯制御回路部と、人体の存在を検知する人体検知手段と、点灯保持時間と再点灯時間とを計時するタイマ回路部と、前記人体検知手段の出力信号と前記タイマ回路部の計時状態とに基づいて前記点灯制御回路部を制御する制御回路部と、前記各回路部と前記手段とに電力を供給する電源回路部とから構成され、前記制御回路部は、前記人体検知手段が人体の存在を検知した時点から前記点灯保持時間の間前記照明負荷を点灯させるよう前記点灯制御回路部を制御し、前記照明負荷の点灯中に前記人体検知手段が人体の存在を検知した時は、前記照明負荷の点灯中に前記人体検知手段が人体の存在を検知した時点から前記点灯保持時間の間前記照明負荷を点灯させるよう前記点灯制御回路部を制御し、前記タイマ回路部は、前記照明負荷の点灯終了後から前記再点灯時間の間に前記人体検知手段が人体の存在を検知した結果に基づいて前記点灯保持時間を長くするので、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができるという効果がある。
【００４１】
請求項２の発明は、請求項１の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間に人体検知手段が人体の存在を検知すると、前記点灯保持時間を所定の点灯保持時間より長くするので、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができるという効果がある。
【００４２】
請求項３の発明は、請求項１の発明において、照明負荷の点灯終了後から前記再点灯時間の間に人体検知手段が人体の存在を検知した回数をカウントするカウンタ回路部を備え、タイマ回路部は、前記カウンタ回路部がカウントした回数が所定の回数に達すると前記点灯保持時間を所定の点灯保持時間より長くするので、カウンタ回路部を用いた簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができるという効果がある。
【００４３】
請求項４の発明は、請求項１の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間に人体検知手段が人体の存在を検知する毎に、前記点灯保持時間を前回の点灯保持時間より長くするので、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができるという効果がある。
【００４４】
請求項５の発明は、請求項３の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間にカウンタ回路部がカウントした人体検知手段が人体の存在を検知した回数が増える毎に、前記点灯保持時間を前回の点灯保持時間より長くするので、カウンタ回路部を用いた簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明制御装置を提供することができるという効果がある。
【００４５】
請求項６の発明は、請求項１の発明において、少なくとも２個以上の人体検知手段を備え、制御回路部は、照明負荷の点灯終了後、前記再点灯時間が経過した後に少なくとも２個以上の前記人体検知手段が同時に人体の存在を検知すると、照明負荷を点灯させるように点灯制御回路部を制御するので、小動物や暖房機器等による人体の存在検知の誤動作を防いで信頼性向上を図ることができるという効果がある。
【００４６】
請求項７の発明は、請求項６の発明において、タイマ回路部は、照明負荷の点灯終了後から前記再点灯時間の間に少なくとも１個以上の人体検知手段が人体の存在を検知すると、前記点灯保持時間を長くするので、一度点灯すると、人が存在するにも関わらず消灯する誤消灯、及び人が存在するにも関わらず調光する誤調光を可能な限り防止し、信頼性向上を図ることができるという効果がある。
【００４７】
請求項８の発明は、請求項１の発明において、人体検知手段は人体までの距離を測定できる波動の反射を利用した能動型センサから構成され、人体を検知した時の前記人体までの距離に応じて前記能動型センサの波動出力を下げるので、消費電力を低減させることができるという効果がある。
【００４８】
請求項９の発明は、請求項１の発明において、制御回路部は、照明負荷を点灯させるとき以外は照明負荷を調光させるよう点灯制御回路部を制御するので、完全に消灯させると危険な部位に設置することができるという効果がある。
【００４９】
請求項１０の発明は、請求項１の発明において、照明負荷は放電灯で構成され、制御回路部は、前記放電灯の点灯終了後から前記再点灯時間の間は前記放電灯を予熱するよう点灯制御回路部を制御するので、放電灯を予熱しておくことで誤消灯時においても即座に再点灯させて、ユーザの不快感を最小限に抑えることができるという効果がある。
【００５０】
請求項１１の発明は、請求項１乃至１０いづれか記載の照明制御装置を内蔵したので、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない照明器具を提供することができるという効果がある。
【００５１】
請求項１２の発明は、請求項１１の発明において、形状が卓上自立型であるので、簡単な構成、制御で人間が周辺を離れたときはすみやかに点灯制御することにより不要な点灯による電力消費を抑え、また誤消灯、誤調光を可能な限り防止して使用者の利便性を損なわない卓上自立型の照明器具を提供することができるという効果がある。
【図面の簡単な説明】
【図１】本発明の実施形態１の構成を示す図である。
【図２】本発明の実施形態１の動作タイムチャートを示す図である。
【図３】本発明の実施形態２の構成を示す図である。
【図４】本発明の実施形態２の動作タイムチャートを示す図である。
【図５】本発明の実施形態２の点灯制御回路部の回路構成を示す図である。
【図６】本発明の実施形態２の卓上自立型の照明器具の外形を示す図である。
【図７】本発明の実施形態３の構成を示す図である。
【図８】本発明の実施形態３の動作タイムチャートを示す図である。
【符号の説明】
１交流電源
２電源回路部
３点灯制御回路部
４照明負荷
５制御回路部
６タイマ回路部
７人体検知手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting control device that has a human body detection means and automatically controls lighting, and a lighting fixture using the same.
[0002]
[Prior art]
Conventionally, there has been a lighting control device that is installed in a toilet or the like, has a human body detection means, and automatically turns on when a person is in the vicinity, and automatically turns off when a person moves away, and a lighting apparatus using the same. .
[0003]
As the human body detection sensor constituting the human body detection means used here, an ultrasonic sensor, a distance measuring sensor, and a pyroelectric sensor (heat ray sensor, PIR) are mainly used.
[0004]
The ultrasonic sensor and the distance measuring sensor output ultrasonic waves and infrared rays, respectively, and measure the time until the light hits the human body and is reflected back, or the angle of reflection by trigonometry, and the presence of the human body and the distance to the human body. Is an active sensor (active type sensor). The advantage of this type of sensor is that it can reliably detect the presence of a human body even when the human body is completely stationary. Disadvantages are that the detection range (detection angle) is narrow, the power consumption during sensor operation is relatively large, and the cost including peripheral circuits is high.
[0005]
The pyroelectric sensor is a sensor that detects the movement of the human body by detecting the amount of change in far infrared rays generated by the body temperature of the human body, and is a passive sensor (passive type sensor) that outputs nothing from the sensor itself. The advantages of this type of sensor are that the detection range (detection angle) is relatively wide, the power consumption during sensor operation is relatively small, there are few false detections of objects other than the human body, such as walls, and peripheral circuits. Including costs is relatively low. The disadvantage is that since it is a sensor that detects changes in the amount of heat, the presence of the human body cannot be detected if the human body is completely stationary.
[0006]
Recently, in consideration of the characteristics of each sensor as described above, an active sensor is used in a lighting control device for a part where the human body is always in front, such as a mirror light in a bathroom, and a lighting fixture using the same. In addition, passive sensors are often used in lighting control devices for moving spaces such as corridors and lighting fixtures using the same.
[0007]
In addition, there is a possibility that the human body is stationary such as an entrance or a toilet, and a lighting control device for a part where a detection range (detection angle) of a certain level or more is necessary, and a lighting apparatus using the same is a passive sensor. Using a timer circuit that operates in the range of several tens of seconds to several minutes as a countermeasure against sensor malfunction when the human body is stationary, the presence of the human body is detected by the pyroelectric sensor, and the lighting load is turned on. After that, an illumination control method is used in which the timer circuit keeps the lighting state during the time counting operation and is turned off after the timer circuit finishes the time counting operation (after the time is up). Hereinafter, the operation time of this timer is referred to as a lighting holding time. Even when an active sensor is used, an illumination control method is used in which the timer circuit keeps lighting for a certain period of time in the same manner as described above in order to compensate for the disadvantage that the detection range (detection angle) is narrow.
[0008]
The lighting holding time is usually fixed or manually adjusted by using a volume or the like, but as disclosed in Japanese Patent Laid-Open No. 7-312295, the lighting holding time is determined according to the detection interval of human body presence detection. An illumination control method that automatically adjusts the lighting holding time has also been proposed.
[0009]
[Problems to be solved by the invention]
In conventional lighting control devices and lighting fixtures using them, it is necessary to set a sufficient lighting holding time as a countermeasure for sensor malfunction when the human body is stationary, so the human body illuminates after leaving the place (after leaving the toilet) There is a problem that the control device and the lighting fixture using the control device are lit unnecessarily until the lighting holding time ends even though they do not exist in the vicinity.
[0010]
In the invention disclosed in Japanese Patent Application Laid-Open No. 7-312295, the lighting holding time is flexibly adjusted according to the detection interval of the human body detection means, and therefore the lighting time for uselessly is shorter than the lighting control method in which the lighting holding time is fixed. it is conceivable that. The pyroelectric sensor is a sensor that detects changes in heat (body temperature), so if the human moving speed is high, the number of times of detection increases and the lighting holding time becomes short. For example, the lighting is held when the person suddenly stops after moving. Since the time is shortened, there is a high possibility that the light will be turned off accidentally even though the human body exists. Further, it is necessary to compare the detection intervals of the human body detection means at the time of lighting, and the control becomes complicated.
[0011]
The present invention has been made in view of the above reasons, and its purpose is to suppress power consumption due to unnecessary lighting by quickly controlling lighting when a person leaves the periphery with a simple configuration and control, and An object of the present invention is to provide an illumination control device that prevents accidental light extinction and mislighting as much as possible and does not impair the convenience of the user, and an illumination fixture using the same.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a lighting load, a lighting control circuit for controlling lighting of the lighting load, a human body detecting means for detecting the presence of a human body, and a timer circuit for measuring a lighting holding time and a relighting time. A control circuit unit that controls the lighting control circuit unit based on an output signal of the human body detection unit and a timing state of the timer circuit unit, and a power supply circuit unit that supplies power to the circuit units and the unit The control circuit unit controls the lighting control circuit unit to turn on the lighting load during the lighting holding time from the time when the human body detecting means detects the presence of a human body, When the human body detecting means detects the presence of a human body during lighting, the lighting load is turned on for the lighting holding time from the time when the human body detecting means detects the presence of the human body during lighting of the lighting load. Said point The control circuit unit is controlled, and the timer circuit unit extends the lighting holding time based on a result of the human body detecting means detecting the presence of a human body during the relighting time after the lighting load has been turned on. With a simple configuration and control, when a person leaves the surrounding area, the lighting is controlled promptly to reduce power consumption due to unnecessary lighting, and to prevent accidental light extinction and mislighting as much as possible. It is possible to provide a lighting control device that does not impair the convenience of the user.
[0013]
According to a second aspect of the present invention, in the first aspect of the present invention, when the human body detecting means detects the presence of a human body during the relighting time after the lighting load has been turned on, the timer circuit unit determines the lighting holding time. It is characterized by longer than the lighting holding time, and when a person leaves the surroundings with a simple configuration and control, the lighting is controlled immediately to reduce power consumption due to unnecessary lighting, and to prevent erroneous lighting and dimming. It is possible to provide an illumination control device that prevents as much as possible and does not impair user convenience.
[0014]
According to a third aspect of the present invention, in the first aspect of the present invention, the timer circuit includes a counter circuit unit that counts the number of times the human body detecting means detects the presence of the human body during the relighting time after the lighting load is turned on. The unit is characterized in that when the number of times counted by the counter circuit unit reaches a predetermined number, the lighting holding time is made longer than the predetermined lighting holding time. Providing a lighting control device that reduces power consumption due to unnecessary lighting by quickly controlling lighting when leaving the surroundings, and prevents accidental light extinction and light misregistration as much as possible without impairing user convenience be able to.
[0015]
According to a fourth aspect of the present invention, in the first aspect of the invention, the timer circuit unit performs the lighting holding time each time the human body detecting means detects the presence of a human body during the relighting time after the lighting load is turned on. It is characterized by making the lighting time longer than the previous lighting holding time, and when humans leave the surroundings with a simple configuration and control, it controls lighting quickly to suppress power consumption due to unnecessary lighting, and it also turns off and malfunctions It is possible to provide an illumination control device that prevents light as much as possible and does not impair user convenience.
[0016]
According to a fifth aspect of the present invention, in the invention of the third aspect, the timer circuit section counts the number of times that the human body detecting means counted by the counter circuit section during the relighting time after the lighting load is turned on detects the presence of a human body. The lighting holding time is made longer than the previous lighting holding time each time when the number of lights increases, and when a person leaves the periphery with a simple configuration and control using a counter circuit unit, the lighting control is performed promptly. It is possible to provide an illumination control device that suppresses power consumption due to unnecessary lighting, prevents erroneous light extinction, and erroneous light control as much as possible, and does not impair user convenience.
[0017]
The invention of claim 6 comprises at least two or more human body detecting means in the invention of claim 1, and the control circuit section has at least two or more after the relighting time has elapsed after the lighting load has been turned on. When the human body detecting means detects the presence of a human body at the same time, the lighting control circuit unit is controlled so as to turn on the lighting load, and the malfunction detection of the human body presence detection by a small animal, a heating device, etc. is prevented and the reliability is improved. Can be achieved.
[0018]
According to a seventh aspect of the present invention, in the sixth aspect of the present invention, when the timer circuit unit detects the presence of a human body during the relighting time after the lighting load is turned on, It is characterized by lengthening the lighting holding time, and once it is lit, it prevents false light extinction that turns off despite the presence of a person, and misadjustment that dimmes despite the presence of a person as much as possible, Reliability can be improved.
[0019]
The invention according to claim 8 is the invention according to claim 1, wherein the human body detecting means is composed of an active sensor using wave reflection that can measure the distance to the human body, and the distance to the human body when the human body is detected. Accordingly, the wave output of the active sensor is lowered, and power consumption can be reduced.
[0020]
The invention of claim 9 is characterized in that, in the invention of claim 1, the control circuit unit controls the lighting control circuit unit to dimm the lighting load except when the lighting load is turned on, and is completely extinguished. And can be installed in dangerous parts.
[0021]
According to a tenth aspect of the present invention, in the first aspect of the present invention, the illumination load is a discharge lamp, and the control circuit unit preheats the discharge lamp during the relighting time after the discharge lamp is turned on. It is characterized by controlling the lighting control circuit unit, and by preheating the discharge lamp, it is possible to immediately relight the lamp even when it is erroneously turned off, thereby minimizing user discomfort.
[0022]
The invention of claim 11 is characterized in that the lighting control device according to any one of claims 1 to 10 is incorporated, and unnecessary lighting is performed by quickly controlling lighting when a person leaves the periphery with a simple configuration and control. In addition, it is possible to provide a lighting apparatus that suppresses the power consumption due to the light source and prevents the erroneous light extinction and the incorrect light control as much as possible and does not impair the convenience of the user.
[0023]
The invention of claim 12 is characterized in that, in the invention of claim 11, the shape is a table-top self-supporting type, and unnecessary lighting is performed by quickly controlling lighting when a person leaves the periphery with a simple configuration and control. In addition, it is possible to provide a table-top self-supporting lighting fixture that suppresses power consumption due to the light source and prevents erroneous light-off and light adjustment as much as possible and does not impair the convenience of the user.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0025]
(Embodiment 1)
FIG. 1 shows the configuration of the first embodiment, and FIG. 2 shows a time chart showing the operation. The first embodiment includes an illumination load 4 composed of an incandescent lamp, a lighting control circuit unit 3 that includes a triac as a switching element and controls lighting of the illumination load 4, a pyroelectric sensor that is a passive sensor, and an amplifier IC. A human body detection means 7 for detecting the presence of a human body and outputting a human body detection signal, and a predetermined lighting holding time T1 or T1 ′ from the time when the human body detection signal comprising a timer IC and output from the human body detection means 7 is input. A human body detection comprising a timer circuit section 6 having a lighting holding timer function for measuring the time and a relighting timer function for measuring a predetermined relighting time T2 from the time when the lighting holding time T1 or T1 ′ is counted, and a microcomputer. The human body detection signal outputted from the means 7 and the lighting holding times T1, T1 ′ and the relighting time T2 outputted from the timer circuit section 6 are counted. A control circuit unit 5 for controlling the lighting control circuit unit 3 Zui, the respective circuit units and the means and the rectification of the AC power supply 1 smooth, and a power supply circuit unit 2 for supplying electric power obtained by stepping down. The timer circuit unit 6 may be realized by a microcomputer of the control circuit unit 5.
[0026]
2A is a human body detection signal output from the human body detection means 7, FIG. 2B is a timing state of the lighting holding timer function of the timer circuit unit 6, and FIG. 2C is a timer circuit unit 6. FIG. 2D shows each time chart of the state of the lighting load 4. When the human body detecting means 7 detects the presence of a human body and outputs a human body detection signal in a state where the lighting load 4 is turned off at the time point S1, the control circuit unit 5 controls the lighting control circuit unit 3 to control the lighting load 4. The timer circuit unit 6 that is turned on and receives a human body detection signal via the control circuit unit 5 starts to measure the lighting holding time T1 by the lighting holding timer function. Thereafter, while the lighting holding timer function of the timer circuit unit 6 is measuring the lighting holding time T1 or T1 ′, the control circuit unit 5 controls the lighting control circuit unit 3 to light the lighting load 4. When the human body detection means 7 detects the presence of a human body and outputs a human body detection signal at time S2 when the lighting holding timer function of the timer circuit unit 6 is measuring the lighting holding time T1, the lighting holding timer function of the timer circuit unit 6 Starts the measurement of the lighting holding time T1 again from the time point S2, and the control circuit unit 5 controls the lighting control circuit unit 3 to hold the lighting load 4 as it is. If the human body detecting means 7 does not detect the presence of the human body until the time S3 when the lighting holding time T1 elapses from the time S2 and the timing of the lighting holding timer function ends, the control circuit unit 5 is turned on at the time S3. And the lighting load 4 is turned off, and the relighting timer function of the timer circuit unit 6 starts measuring the relighting time T2. At time S4, when the human body detection means 7 redetects the human body and outputs a human body detection signal during the measurement of the relighting time T2, the control circuit unit 5 controls the lighting control circuit unit 3 to light the lighting load 4. Thus, the lighting holding timer function of the timer circuit unit 6 starts measuring the lighting holding time T1 ′ longer than the previous lighting holding time T1. That is, after the light is turned off, the human body detecting means 7 re-detects the presence of the human body during the timing of the relighting time T2, because the detection range of the human body detecting means 7 is narrow even though the person is on the spot. Alternatively, when a pyroelectric sensor is used as the human body detection sensor of the human body detection unit 7 as in the first embodiment, the human body detection unit 7 cannot detect the presence of the human body because the person has stopped. Therefore, it is determined that the light has been turned off erroneously, and the lighting holding time is lengthened to control in the direction to prevent the light from being turned off. Here, if the human body detecting means 7 outputs a human body detection signal after the time of the relighting time T2 from the time point S3 is finished, the lighting holding timer function of the timer circuit unit 6 measures the same lighting holding time T1 as the previous time. . Next, when the human body detection means 7 does not detect the presence of the human body by the time S5 when the lighting holding time T1 ′ has elapsed from the time S4, the control circuit unit 5 controls the lighting control circuit unit 3 to control the lighting load at the time S5. 4 is turned off, and the timing of the relighting time T2 is started. If the human body detection means 7 does not re-detect the presence of the human body until the relighting time T2 elapses from this time S5, the control circuit unit 5 turns on the lighting control circuit unit 3 at the next time S6 when the human body is detected. The lighting load 4 is controlled to light up, and the lighting holding timer function of the timer circuit section 6 resets the lighting holding time T1 ′ and starts measuring time again at the lighting holding time T1. When the human body detecting means 7 does not detect the presence of the human body until the lighting holding time T1 elapses from the time S6, the lighting load 4 is turned off at the time S7 when the lighting holding time T1 elapses from the time S6, and the relighting time T2 Will start timing. Since the lighting holding times T1 and T1 ′ are different depending on a part to be used and a user, it is preferable that the lighting holding times T1 and T1 ′ can be adjusted by a volume. For example, the lighting holding time T1 is generally about 30 seconds to several minutes, the lighting holding time T1 ′ is T1 + 30 seconds, and the relighting time T2 is about 5 seconds.
[0027]
In the first embodiment, for example, even if the human body detecting means 7 redetects the presence of the human body before the relighting time T2 elapses from the time point S5, the lighting holding timer function is the lighting holding time T1 ′ as in the previous time measurement. Although the time measurement is started, when the human body detecting means 7 continuously redetects the presence of the human body, the lighting holding time may be extended each time the number of redetections increases. In the first embodiment, an incandescent lamp is used as the illumination load 4, but a fluorescent lamp or LED may be used.
[0028]
As described above, according to the first embodiment, when there is a human body non-detection phenomenon of the human body detecting means 7, the next lighting holding time is set long, and the initial lighting holding time T1 is expected to be the shortest. By setting the time, it is possible to reduce power consumption due to unnecessary lighting by quickly turning off when a person leaves the surroundings with a simple configuration and control, and to prevent the user from turning off the lamp as much as possible. It is possible to provide a lighting control device and a lighting fixture using the same.
[0029]
(Embodiment 2)
FIG. 3 shows the configuration of the second embodiment, and FIG. 2 shows a time chart showing the operation. The basic configuration is the same as that of the first embodiment, and the same configurations and elements are denoted by the same reference numerals and description thereof is omitted. In the second embodiment, the counter circuit unit 8 connected to the control circuit unit 5 includes a counter. When the lighting load 4 is turned on, the relighting timer function of the timer circuit unit 6 measures the relighting time T2. When the re-detection in which the human body detecting means 7 detects the presence of the human body occurs, the counter is counted up once. When the re-detection occurs twice and the counter counts up twice, the lighting holding timer function of the timer circuit unit 6 measures the lighting holding time T1 ′ longer than the previous lighting holding time T1, thereby extending the lighting holding time. Thus, control is performed in a direction to prevent erroneous light extinction. The human body detection means 7 is a sensor that detects the movement of the human body (mainly approaching movement) using the difference in the frequency of the reflected wave of the ultrasonic wave due to the Doppler effect.
[0030]
And the illumination load 4 of this Embodiment 2 is a fluorescent lamp, the lighting control circuit part 3 is comprised with a fluorescent lamp lighting circuit, and the lighting control circuit part 3 and the illumination load 4 are shown with the circuit structure of FIG. The AC power supply 1 is full-wave rectified by the rectifier DB and smoothed by the electrolytic capacitor C1 to obtain a DC power supply. A series circuit of an inductor L1 and a capacitor C2 is connected in parallel to the electrolytic capacitor C1, a series circuit of a capacitor C3 and an inductor L2 is connected in parallel to the inductor L1, and an illumination load 4 that is a fluorescent lamp is connected in parallel to the capacitor C3. Connected. A diode D1 and a switching element Q1 are connected in parallel to the capacitor C2, and a driving circuit K1 is connected to the switching element Q1. This circuit is a voltage resonance type inverter circuit generally called a one-stone inverter, and the driving circuit K1 controls the on-duty of the switching element Q1, thereby converting the DC power supplied from the electrolytic capacitor C1 into high-frequency power for illumination. Dimming control can be performed by supplying a high-frequency current to the load 4 and changing the on-duty of the switching element Q1. For example, the dimming ratio can be lowered by reducing the on-duty of the switching element Q1. The capacitor C3 is a preheating capacitor, and during preheating until the fluorescent lamp constituting the illumination load 4 starts lighting (discharge), a high-frequency preheating current is applied to the fluorescent lamp constituting the illumination load 4 via the capacitor C3. Flow through the filament. During this preheating, the on-duty of the switching element Q1 is reduced by the preheating period, and the preheating current is passed through the filament of the fluorescent lamp constituting the lighting load 4 through the capacitor C3 to sufficiently preheat, and then the on-duty of the switching element Q1 Is increased to make the voltage across the illumination load 4 equal to or higher than the starting voltage. In the second embodiment, a one-stone inverter circuit is used. However, a half-bridge inverter circuit capable of dimming control and control of a preheating period, and a copper iron ballast circuit may be used.
[0031]
4A is a human body detection signal output from the human body detection means 7, FIG. 4B is a timing state of the lighting holding timer function of the timer circuit section 6, and FIG. 4C is a timer circuit section 6. FIG. 4D shows each time chart of the state of the lighting load 4. When the human body detection means 7 detects the presence of a human body and outputs a human body detection signal in a state where the lighting load 4 is turned off at the time S10, the control circuit unit 5 controls the lighting control circuit unit 3 to control the lighting load 4 Is preheated and turned on, and the timer circuit unit 6 to which the human body detection signal is inputted via the control circuit unit 5 starts to measure the lighting holding time T1 by the lighting holding timer function. Thereafter, while the lighting holding timer function of the timer circuit unit 6 is measuring the lighting holding time T1 or T1 ′, the control circuit unit 5 controls the lighting control circuit unit 3 to light the lighting load 4. If the human body detection means 7 does not detect the presence of a human body from time S10 to time S11 when the lighting holding time T1 elapses, the relighting timer function of the timer circuit unit 6 measures the relighting time T2 from time S11. When the relighting timer function of the timer circuit unit 6 is measuring the relighting time T2, the control circuit unit 5 controls the lighting control circuit unit 3 so that the lighting load 4 is not completely turned off and is put into a preheating state. (The lighting load 4 is not lit during the preheating state). This is because when the human body detecting means 7 re-detects the human body and outputs a human body detection signal during the relighting time T2, it is considered that the light was erroneously turned off. This is because if the detection means 7 re-detects the presence of a human body, it is turned on as soon as possible to minimize the user's discomfort. When the relighting timer function finishes counting the relighting time T2 at time S12, the control circuit unit 5 controls the lighting control circuit unit 3 to release the preheating state of the lighting load 4 and completely turn it off. At time S13, when the human body detection means 7 detects the presence of a human body and outputs a human body detection signal, the control circuit unit 5 preheats the lighting load 4 and turns it on as in time S10. When the human body detection means 7 detects the presence of a human body and outputs a human body detection signal at time S14 when the lighting holding timer function of the timer circuit unit 6 is measuring the lighting holding time T1, the lighting holding timer of the timer circuit unit 6 The function starts counting the lighting holding time T1 again from time S14, and the control circuit unit 5 controls the lighting control circuit unit 3 to hold the lighting load 4 as it is. If the human body detection means 7 does not detect the presence of the human body from time S14 until time S15 when the lighting holding time T1 elapses, the control circuit unit 5 controls the lighting control circuit unit 3 to preheat the lighting load 4 at time S15. Then, the relighting timer function of the timer circuit unit 6 starts measuring the relighting time T2. At time S <b> 16, when the human body detection means 7 redetects the human body and outputs a human body detection signal while the relighting timer function counts the relighting time T <b> 2, the counter of the counter circuit unit 8 counts up and counts one. . Then, the control circuit unit 5 controls the lighting control circuit unit 3 to immediately turn on the illumination load 4 that has been in a preheated state, and the timer circuit unit 6 to which the human body detection signal is input via the control circuit unit 5 is a lighting holding timer. The function starts the lighting holding time T1. At time S17, the lighting load 4 changes from the lighting state to the preheating state, and the relighting timer function of the timer circuit unit 6 starts counting the relighting time T2. At time S18, when the human body detection means 7 redetects the human body and outputs a human body detection signal during the measurement of the relighting time T2, the counter of the counter circuit unit 8 counts up and counts 2. In the second embodiment, when the counter of the counter circuit unit 8 counts up twice and counts 2, the control circuit unit 5 controls the lighting control circuit unit 3 to immediately turn on the illumination load 4 that was in the preheated state, The timer circuit unit 6 to which the human body detection signal is inputted via the control circuit unit 5 starts to measure the lighting holding time T1 ′ longer than the previous lighting holding time T1 by the lighting holding timer function in order to prevent erroneous lighting. . If the human body detecting means 7 does not detect the presence of the human body by the time S19 when the lighting holding time T1 ′ has elapsed from the time S18, the lighting load 4 is in the preheated state at the time S19, and the relighting time T2 is timed. Be started.
[0032]
In the second embodiment, when the counter of the counter circuit unit 8 counts up twice, the lighting holding time is extended to prevent erroneous lighting, but the number of times of counting up is not limited to two. If the number of times is counted up, the lighting time T1 may be lengthened. The lighting holding time may be extended each time the counter of the counter circuit unit 6 counts up.
[0033]
FIG. 6 shows an external view of a table-top self-supporting lighting fixture that incorporates the lighting control device of the second embodiment and is used by being installed on a desk or table. A power supply circuit unit 2, a lighting control circuit 3, a control circuit unit 5, a timer circuit unit 6 and a counter circuit unit 8 are built in, and a pedestal 20 connected to an AC power source via a power cord 24 is disposed on the surface of the pedestal 20. The operating switch 23 is installed upward from the rear part of the pedestal 20, the human body detection means 7 is provided on the front part side of the pedestal 20, and the wiring between the lighting control circuit unit 3 and the lighting load 4 is provided inside. The supporting column 21 is provided, and the fluorescent lamp mounting portion 22 is provided at the upper end of the supporting column 21 and includes a lighting load 4 that is a fluorescent lamp on the lower surface.
[0034]
(Embodiment 3)
FIG. 7 shows the configuration of the third embodiment, and FIG. 8 shows a time chart showing the operation. The same configurations and elements as those of the second embodiment are denoted by the same reference numerals, and description thereof is omitted. In the third embodiment, the lighting control circuit unit 3 can perform dimming control for dimming the lighting load 4 with a constant dimming ratio, and the lighting load 4 is turned on for installation in a dangerous part when it is completely turned off. If not, keep it dimmed. Moreover, it isolate | separates into the lighting fixture 100 and the transmitter 101, and each has a human body detection means. The transmitter 101 includes a first human body detection means 7a, a transmission control circuit unit 11, a transmission timer circuit unit 12, a transmission circuit unit 10, and a transmission power supply circuit unit (not shown). The transmission power supply circuit unit is composed of a battery or the like and supplies power to the circuit units and means of the transmitter 101. The first human body detecting means 7a is an active sensor. In the third embodiment, the first human body detecting means 7a is a sensor that detects the presence of a human body by measuring the distance from the human body from the reflection angle when the output infrared light is reflected and returned. It is composed of a distance sensor, and its detection operation is controlled to be performed discretely at a detection operation interval T3 by a transmission timer circuit unit 12 constituted by a timer IC. When the presence of a human body is detected, a first human body detection signal is output. Output. The transmission control circuit unit 11 includes a microcomputer or the like, and controls the transmission operation of the transmission circuit unit 10. The transmission circuit unit 10 includes an infrared LED, a transistor, and the like, and is a means similar to a known infrared remote control transmitter, and receives a remote control transmission signal based on the first human body detection signal in the lighting circuit 100. 9 to send. Moreover, the lighting fixture 100 has the 2nd human body detection means 7b which consists of a pyroelectric sensor which is a passive sensor. The transmission timer circuit unit 12 may be realized by a microcomputer of the transmission control circuit unit 11. Further, the transmitter 101 may be provided with a setting switch that can manually set the lighting holding times T1 and T1 ′.
[0035]
Here, FIG. 8A is an infrared output of the first human body detection means 7a comprising a distance measuring sensor, FIG. 8B is a first human body detection signal output from the first human body detection means 7a, and FIG. 8 (c) is a remote control transmission signal transmitted from the transmission circuit unit 10, FIG. 8 (d) is a second human body detection signal output from the second human body detection means 7b, and FIG. 8 (e) is a timer circuit unit. 6 shows a timing state of the lighting hold timer function, FIG. 8F shows a timing state of the relighting timer function of the timer circuit section 6, and FIG.
[0036]
As shown in FIG. 8 (a), the first human body detection means 7a performs the operation of detecting the presence of a human body by outputting infrared rays at intervals of time T3 counted by the transmission timer circuit unit 12, and at time S20, The first human body detection means 7a detects the presence of a human body and outputs a first human body detection signal, and the transmission control circuit unit 11 controls the transmission circuit unit 10 while the first human body detection signal is output. Then, the remote control transmission signal at a constant interval is transmitted to the reception circuit unit 9, and the reception circuit unit 9 converts the received remote control transmission signal into a digital signal and inputs it to the control circuit unit 5. When the remote control transmission signal received by the receiving circuit unit 9 at the time S21 and the second human body detection signal output from the second human body detection means 7b are simultaneously input to the control circuit unit 5, the control circuit unit 5 The lighting control circuit unit 3 is controlled to light the lighting load 4 from the dimming state, and the timer circuit unit 6 starts measuring the lighting holding time T1 by the lighting holding timer function. That is, the pyroelectric sensor of the second human body detecting means 7b detects the human body, and the distance measuring sensor of the first human body detecting means 7a detects that the human body has approached a predetermined distance. When the human body detection signals are simultaneously input from the second human body detection means 7a and 7b and the lighting load 4 is turned on from the dimming state, malfunctions caused by small animals, heating equipment, and the like are prevented. Thereafter, while the lighting holding timer function of the timer circuit unit 6 is measuring the lighting holding time T1 or T1 ′, the control circuit unit 5 controls the lighting control circuit unit 3 to light the lighting load 4. After the lighting, either the first human body detecting means 7a or the second human body detecting means 7b as in the time points S22 to 25 when the lighting holding timer function of the timer circuit unit 6 is measuring the lighting holding time T1. When the human body detection signal is output, the lighting holding timer function of the timer circuit unit 6 restarts the lighting holding time T1 from each time point S22 to 25, and the control circuit unit 5 controls the lighting control circuit unit 3 to perform illumination. The lighting of the load 4 is kept as it is. If the human body detecting means 7a or the human body detecting means 7b does not detect the presence of a human body from time S25 to time S26 when the lighting holding time T1 elapses, the control circuit unit 5 controls the lighting control circuit unit 3 to illuminate at time S26. The load 4 is not completely extinguished but is dimmed, and the relighting timer function of the timer circuit unit 6 starts to measure the relighting time T2. At time S27, when either of the first human body detecting means 7a or the second human body detecting means 7b re-detects the presence of a human body and outputs a human body detection signal during the measurement of the relighting time T2, the control circuit The unit 5 controls the lighting control circuit unit 3 to turn on the lighting load 4 that was in the dimming state, and the timer circuit unit 6 uses the lighting holding timer function from the previous lighting holding time T1 in order to prevent erroneous dimming. The timing of the long lighting holding time T1 ′ is started. After the lighting, either the first human body detecting means 7a or the second human body detecting means 7b as in the time points S28 to S31 when the lighting holding timer function of the timer circuit unit 6 is measuring the lighting holding time T1 ′. When one of them outputs a human body detection signal, the lighting holding timer function of the timer circuit unit 6 starts counting the lighting holding time T1 ′ again from each time point S28 to S31, and the control circuit unit 5 controls the lighting control circuit unit 3. The lighting load 4 is kept on. If the first human body detecting means 7a or the second human body detecting means 7b does not detect the presence of the human body from the time point S31 to the time point S32 when the lighting holding time T1 ′ elapses, the control circuit unit 5 in the time point S32 The lighting load 4 is not completely extinguished by controlling the unit 3 and is in a dimming state.
[0037]
As described above, in the third embodiment, the first human body detecting means 7a and the second human body detecting means 7b simultaneously detect the presence of a human body in a dimming state where the relighting timer of the timer circuit unit 6 does not measure time. Then, the lighting load 4 is turned on, and after lighting, the lighting is held by the human body detection signal of either one of the human body detection means, and in the dimming state in which the relighting timer is measuring time, It is turned on again by the human body detection signal. Therefore, since the control is performed in such a direction as to prevent misadjustment in which the dimming state occurs when a person is present once the light is turned on, the reliability can be improved. In addition, by separating the active first human body detection means 7a and wirelessly transmitting the first human body detection signal, the first human body detection means 7a can be installed near the place where the human body is stationary. Even if the detection range is narrow, the presence of a human body can be detected with certainty, and the infrared output for detection can be reduced to the minimum necessary. The power consumption can be reduced by lowering the infrared output to the minimum necessary and by causing the first human body detection means 7a to perform the detection operation discretely instead of continuously. Therefore, a transmission power supply circuit unit (not shown) can be constituted by a battery, and the circuit units and means of the transmitter 101 can be battery-driven. In the third embodiment, the first human body detection sensor 7a is a distance measuring sensor that detects the presence of a human body from an infrared reflection angle. However, the presence of a human body is detected at a time when the ultrasonic wave is reflected and returned. An ultrasonic sensor may be used.
[0038]
Further, the first human body detecting means 7a using the distance measuring sensor or the ultrasonic sensor reduces the output of the infrared ray or ultrasonic wave to be output next time according to the distance from the human body when the presence of the human body is detected. Furthermore, power consumption can be reduced. That is, since the distance to the wall is measured immediately after the shift to the dimming state, the distance measured at that time is stored, and then the second human body detection means 7b detects the presence of the human body and performs illumination. If the distance to the human body measured when the load 4 is lit is shorter than the stored distance, the distance is the distance to the human body, so the next infrared or ultrasonic output is the distance to the human body. Can be reduced to the minimum output that can be measured. As a result, power consumption can be further reduced.
[0039]
In the third embodiment, the first human body detecting means 7a is a distance measuring sensor. However, it may be a sensor that detects the presence of a human body by detecting opening and closing of a door.
[0040]
【The invention's effect】
According to the first aspect of the present invention, there is provided a lighting load, a lighting control circuit for controlling lighting of the lighting load, a human body detecting means for detecting the presence of a human body, and a timer circuit for measuring a lighting holding time and a relighting time. A control circuit unit that controls the lighting control circuit unit based on an output signal of the human body detection unit and a timing state of the timer circuit unit, and a power supply circuit unit that supplies power to the circuit units and the unit The control circuit unit controls the lighting control circuit unit to turn on the lighting load during the lighting holding time from the time when the human body detecting means detects the presence of a human body, When the human body detecting means detects the presence of a human body during lighting, the lighting load is turned on for the lighting holding time from the time when the human body detecting means detects the presence of the human body during lighting of the lighting load. Said point The control circuit unit is controlled, and the timer circuit unit extends the lighting holding time based on a result of the human body detecting means detecting the presence of a human body during the relighting time after the lighting load has been turned on. Therefore, when a person leaves the surroundings with a simple configuration and control, the lighting is controlled quickly to reduce power consumption due to unnecessary lighting, and to prevent the user from accidentally turning off the light and adjusting the light as much as possible. There is an effect that it is possible to provide a lighting control device that does not impair the performance.
[0041]
According to a second aspect of the present invention, in the first aspect of the present invention, when the human body detecting means detects the presence of a human body during the relighting time after the lighting load has been turned on, the timer circuit unit determines the lighting holding time. Because it is longer than the lighting holding time of the light, the power consumption due to unnecessary lighting is suppressed by quickly controlling lighting when a person leaves the surrounding area with a simple configuration and control, and erroneous light extinction and incorrect light control are as much as possible There is an effect that it is possible to provide an illumination control device that is prevented and does not impair user convenience.
[0042]
According to a third aspect of the present invention, in the first aspect of the present invention, the timer circuit includes a counter circuit unit that counts the number of times the human body detecting means detects the presence of the human body during the relighting time after the lighting load is turned on. Since the lighting holding time becomes longer than the predetermined lighting holding time when the number of times counted by the counter circuit unit reaches a predetermined number of times, a person can leave the periphery with a simple configuration and control using the counter circuit unit. In such a case, it is possible to provide a lighting control device that suppresses power consumption due to unnecessary lighting by promptly controlling lighting, and prevents accidental light extinction and light misregistration as much as possible and does not impair user convenience. There is an effect.
[0043]
According to a fourth aspect of the present invention, in the first aspect of the invention, the timer circuit unit performs the lighting holding time each time the human body detecting means detects the presence of a human body during the relighting time after the lighting load is turned on. Since the lighting time is longer than the previous lighting holding time, power consumption due to unnecessary lighting is suppressed by promptly controlling lighting when a person leaves the surroundings with a simple configuration and control, and erroneous lighting and dimming are possible There is an effect that it is possible to provide an illumination control device that is prevented as much as possible and does not impair user convenience.
[0044]
According to a fifth aspect of the present invention, in the invention of the third aspect, the timer circuit section counts the number of times that the human body detecting means counted by the counter circuit section during the relighting time after the lighting load is turned on detects the presence of a human body. Each time the lighting increases, the lighting holding time is made longer than the previous lighting holding time, so when a person leaves the surroundings with a simple configuration and control using the counter circuit unit, unnecessary lighting is achieved by quickly controlling the lighting. In addition, it is possible to provide an illumination control device that suppresses power consumption due to light and prevents erroneous light extinction and light misregistration as much as possible and does not impair user convenience.
[0045]
The invention of claim 6 comprises at least two or more human body detecting means in the invention of claim 1, and the control circuit section has at least two or more after the relighting time has elapsed after the lighting load has been turned on. When the human body detection means detects the presence of a human body at the same time, the lighting control circuit unit is controlled so as to turn on the lighting load, thereby preventing a malfunction of the human body presence detection by a small animal, a heating device, etc., and improving reliability. There is an effect that can be.
[0046]
According to a seventh aspect of the present invention, in the sixth aspect of the present invention, when the timer circuit unit detects the presence of a human body during the relighting time after the lighting load is turned on, Longer lighting holding time, so that if it is lit once, it will prevent accidental light extinction that turns off even if there is a person, and misadjustment light that dimmes even if there is a person as much as possible, improving reliability There is an effect that can be achieved.
[0047]
The invention according to claim 8 is the invention according to claim 1, wherein the human body detecting means is composed of an active sensor using wave reflection that can measure the distance to the human body, and the distance to the human body when the human body is detected. Accordingly, since the wave output of the active sensor is lowered, power consumption can be reduced.
[0048]
In the invention of claim 9, in the invention of claim 1, since the control circuit unit controls the lighting control circuit unit to dimm the lighting load except when the lighting load is turned on, it is dangerous if it is completely turned off. There is an effect that it can be installed at a site.
[0049]
According to a tenth aspect of the present invention, in the first aspect of the present invention, the illumination load is a discharge lamp, and the control circuit unit preheats the discharge lamp during the relighting time after the discharge lamp is turned on. Since the lighting control circuit unit is controlled, the discharge lamp is preheated, so that it is possible to immediately relight the lamp even when it is erroneously turned off, thereby minimizing user discomfort.
[0050]
Since the lighting control device according to any one of claims 1 to 10 is incorporated in the invention of claim 11, power consumption due to unnecessary lighting is achieved by promptly controlling lighting when a person leaves the periphery with a simple configuration and control. In addition, there is an effect that it is possible to provide a lighting apparatus that suppresses erroneous light extinction and misadjustment as much as possible, and does not impair user convenience.
[0051]
Since the shape of the invention of claim 12 is the table-top self-supporting type in the invention of claim 11, power consumption due to unnecessary lighting is achieved by quickly controlling lighting when a person leaves the periphery with a simple configuration and control. In addition, there is an effect that it is possible to provide a table-top self-supporting lighting fixture that can prevent the light from being turned off and mis-adjusted as much as possible and does not impair the convenience of the user.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a first exemplary embodiment of the present invention.
FIG. 2 is a diagram showing an operation time chart according to the first embodiment of the present invention.
FIG. 3 is a diagram showing a configuration of a second exemplary embodiment of the present invention.
FIG. 4 is a diagram showing an operation time chart according to the second embodiment of the present invention.
FIG. 5 is a diagram illustrating a circuit configuration of a lighting control circuit unit according to a second embodiment of the present invention.
FIG. 6 is a diagram showing an outer shape of a table-top self-supporting lighting fixture according to Embodiment 2 of the present invention.
FIG. 7 is a diagram showing a configuration of a third exemplary embodiment of the present invention.
FIG. 8 is a diagram illustrating an operation time chart according to the third embodiment of the present invention.
[Explanation of symbols]
1 AC power supply
2 Power supply circuit
3 Lighting control circuit
4 Lighting load
5 Control circuit
6 Timer circuit
7 Human body detection means

Claims

An illumination load, a lighting control circuit unit that controls lighting of the illumination load, a human body detection unit that detects the presence of a human body, a timer circuit unit that measures a lighting holding time and a relighting time, and the human body detection unit The control circuit unit is configured to control the lighting control circuit unit based on an output signal and a timing state of the timer circuit unit, and a power supply circuit unit that supplies power to the circuit units and the means, and the control The circuit unit controls the lighting control circuit unit to turn on the lighting load during the lighting holding time from the time when the human body detecting unit detects the presence of a human body, and the human body detecting unit during lighting of the lighting load When the presence of a human body is detected, the lighting control circuit unit is controlled so that the lighting load is turned on during the lighting holding time from the time when the human body detecting unit detects the presence of the human body while the lighting load is turned on. The timer circuit unit lengthens the lighting holding time based on a result of the human body detecting means detecting the presence of a human body during the relighting time after the lighting load is turned on. Control device.

The timer circuit unit makes the lighting holding time longer than a predetermined lighting holding time when the human body detecting means detects the presence of a human body during the relighting time after the lighting load is turned on. The lighting control apparatus according to 1.

A counter circuit unit that counts the number of times that the human body detecting means detects the presence of a human body during the relighting time after the lighting load is turned on, and the timer circuit unit has a predetermined number of times that the counter circuit unit has counted. The lighting control device according to claim 1, wherein when the number of times is reached, the lighting holding time is made longer than a predetermined lighting holding time.

The timer circuit unit makes the lighting holding time longer than the previous lighting holding time each time the human body detecting means detects the presence of a human body during the relighting time after the lighting load is turned on. The illumination control device according to claim 1.

The timer circuit unit maintains the previous lighting holding time every time the number of times the human body detecting means counted by the counter circuit unit detects the presence of the human body during the re-lighting time after the lighting load is turned on. 4. The lighting control device according to claim 3, wherein the lighting control device is longer than time.

When at least two or more human body detecting means detect the presence of a human body at the same time after the relighting time has elapsed after the lighting load has been turned on, The lighting control device according to claim 1, wherein the lighting control circuit unit is controlled to light a load.

The timer circuit unit extends the lighting holding time when at least one human body detecting means detects the presence of a human body during the relighting time after the lighting load is turned on. The lighting control device described.

The human body detecting means is composed of an active sensor using wave reflection that can measure the distance to the human body, and lowers the wave output of the active sensor according to the distance to the human body when the human body is detected. The lighting control device according to claim 1.

The lighting control device according to claim 1, wherein the control circuit unit controls the lighting control circuit unit to dimm the lighting load except when the lighting load is turned on.

The lighting load is configured by a discharge lamp, and the control circuit unit controls the lighting control circuit unit to preheat the discharge lamp during the relighting time after the lighting of the discharge lamp is finished. The lighting control apparatus according to 1.

A lighting fixture comprising the lighting control device according to any one of claims 1 to 10.

The lighting fixture according to claim 11, wherein the shape is a table-top self-supporting type.