JP2005093171A - Illumination control device - Google Patents

Illumination control device Download PDF

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JP2005093171A
JP2005093171A JP2003323276A JP2003323276A JP2005093171A JP 2005093171 A JP2005093171 A JP 2005093171A JP 2003323276 A JP2003323276 A JP 2003323276A JP 2003323276 A JP2003323276 A JP 2003323276A JP 2005093171 A JP2005093171 A JP 2005093171A
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illuminance value
illuminance
lighting
value
external light
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JP4385694B2 (en
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Hisaaki Takahashi
寿明 高橋
Yasushi Morimoto
康司 森本
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Toshiba Lighting and Technology Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination control device controlling illuminance on a floor so as to keep the illuminance almost constant, by controlling the illuminance device so as to obtain the targeted illuminance, preventing flickering of the illumination, and to exhibit energy-saving effect. <P>SOLUTION: The illuminance value of the light from outside Ls on the floor is calculated, when the illumination device is lighted with a lower limit light control value, and a corrected illuminance value Lx is calculated by subtracting the illuminance value Ln at light control level of 10% from the illuminance value of the light from outside Ls. Whether a target illuminance value Lp is exceeded by the corrected illuminance value Lx is checked, and the lighting device is turned off, when the target illuminance value Lp is exceeded by the corrected illuminance value Lx, and the illumination device is turned on again, when a measured illuminance value Lm becomes lower than the target illuminance value Lp. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、周囲の明るさを検出して照明器具を制御する照明制御装置に関する。   The present invention relates to an illumination control device that controls ambient lighting by detecting ambient brightness.

従来、器具本体に取付けられている照明ランプの明るさをインバータにより調整する照明器具において、器具本体に、照明ランプにより照らされている床面などの場所の明るさを計測して明るさに応じた信号を出力する照度計と、この照度計からの出力に応じてインバータを制御し、照明ランプの明るさを調節するためのコントローラとを設け、場所に適した調光を行うものが知られている（例えば、特許文献１参照）。   Conventionally, in a lighting fixture that adjusts the brightness of an illumination lamp mounted on the fixture body by an inverter, the brightness of the place such as the floor surface illuminated by the illumination lamp is measured on the fixture body according to the brightness. A illuminance meter that outputs a light signal and a controller that controls the inverter according to the output from the illuminance meter and adjusts the brightness of the illumination lamp are provided to perform dimming suitable for the location. (For example, refer to Patent Document 1).

しかしながら、照明器具の調光特性には非線形部分がある。すなわち、調光下限値があり、それ以下では照明ランプが消灯することになる。従って、照明器具を調光下限値で動作すると目標照度を越えてしまい、かといつて照明器具を消灯させ外光のみにすると目標照度に達しない領域が生じるが、このような領域に対しては照明器具を調光下限値で点灯し続けて対処することになり、結局、外光によって周囲が十分に明るくなっても照明器具を消灯させることができず無駄に電力を消費するという問題があった。   However, there is a non-linear part in the dimming characteristics of the luminaire. In other words, there is a dimming lower limit value, and below that, the illumination lamp is turned off. Therefore, if the luminaire is operated at the dimming lower limit, the target illuminance will be exceeded, and when the luminaire is turned off and only the external light is used, there will be a region that does not reach the target illuminance. The lighting fixture will continue to be lit at the lower dimming limit, and eventually the lighting fixture will not be turned off even when the surroundings become sufficiently bright due to external light, and there is a problem that power is wasted. It was.

これを解決するため、例えば、外光が多量に入射する状態において照明器具が調光下限値で動作しているときの外光を含む照度から目標照度値を減じた値が調光下限値のみで動作したときの照明器具からの光束によって発生している床面照度と等しいかまたは大きい場合は照明器具を消灯させるという、照明器具の調光特性における非線形部分に関するあかりセンサ制御による消灯制御方式を実行することで省エネルギー効果を簡便かつ有効に発揮できるものが知られている（例えば、特許文献２参照）。
特開平７−１２２３６９号公報 特開２００２−２６０８８０公報 In order to solve this, for example, the value obtained by subtracting the target illuminance value from the illuminance including external light when the luminaire is operating at the dimming lower limit value in a state where a large amount of external light is incident is only the dimming lower limit value. A lighting control method based on the light sensor control for the non-linear part of the dimming characteristics of the lighting fixture, which is to turn off the lighting fixture if the floor illumination generated by the luminous flux from the lighting fixture when operating at There is known one that can easily and effectively exhibit the energy saving effect by executing (for example, see Patent Document 2).
JP-A-7-122369 JP 2002-260880 A

しかし、このような消灯制御方式においては、照明器具を調光下限値で動作している状態で外光が照明器具を消灯しても十分に目標照度値に達する照度になっているときには照明器具を消灯制御するが、外光による照度は変化し易く、外光が照明器具を消灯すると目標照度値に達しない状態になると照明器具は再び調光下限値で動作するようになる。このため、外光の変化によって照明器具が頻繁に消灯と調光下限値での点灯を繰り返すことになり、照明がちらついて不快感を与える虞があった。   However, in such a turn-off control method, when the illuminator is operating at the dimming lower limit value and the illuminance is sufficient to reach the target illuminance value even when external light turns off the luminaire, the luminaire However, when the external light turns off the lighting fixture and the lighting fixture does not reach the target illuminance value, the lighting fixture again operates at the dimming lower limit value. For this reason, the lighting fixture frequently turns off and turns on at the light control lower limit value due to a change in outside light, and there is a possibility that the lighting flickers and gives an uncomfortable feeling.

本発明は、床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御するものにおいて、照明のちらつきを防止でき、しかも、省エネルギー効果を簡便かつ有効に発揮できる照明制御装置を提供する。   The present invention measures the illuminance of the floor and adjusts the luminous flux of the luminaire so that the target illuminance value stored in advance is controlled to keep the illuminance of the floor substantially constant. In addition, an illumination control device that can easily and effectively exhibit an energy saving effect is provided.

請求項１記載の発明は、周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値から照明器具をある調光度で点灯したときの照度値を減算する減算手段と、この減算手段にて減算した結果の照度値が目標照度値よりも大きい場合に照明器具を消灯制御する消灯制御手段とを備えたものにある。
請求項２記載の発明は、請求項１記載の照明制御装置において、減算手段が外光照度値から減算する照度値を決める照明器具のある調光度を、１０〜２０％程度の調光度に設定したことにある。 According to the first aspect of the present invention, the illuminance of the floor surface is measured using the light detection means for detecting the brightness of the surroundings, and the luminous flux of the lighting fixture is adjusted so that the target illuminance value is stored in advance. In an illumination control device that controls the illuminance to be substantially constant, an external light illuminance value calculating unit that calculates an external light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the calculation unit The subtracting means for subtracting the illuminance value when the lighting fixture is turned on at a certain dimming degree from the external light illuminance value calculated in step 1, and when the illuminance value as a result of subtraction by this subtracting means is larger than the target illuminance value, And an extinguishing control means for controlling the extinction.
According to a second aspect of the present invention, in the illumination control device according to the first aspect, the dimming degree of the lighting fixture that determines the illuminance value to be subtracted from the illuminance value by the subtracting means is set to a dimming degree of about 10 to 20%. There is.

請求項３記載の発明は、周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値が、目標照度値よりも高く設定した消灯照度値よりも大きい場合に照明器具を消灯制御する消灯制御手段とを備えたことにある。
請求項４記載の発明は、請求項３記載の照明制御装置において、消灯照度値を外部信号によって設定することにある。 The invention according to claim 3 measures the illuminance of the floor surface using a light detection means for detecting the brightness of the surroundings, and adjusts the luminous flux of the luminaire so as to obtain a pre-stored target illuminance value. In an illumination control device that controls the illuminance to be substantially constant, an external light illuminance value calculating unit that calculates an external light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the calculation unit And an extinguishing control means for controlling the lighting equipment to be extinguished when the external light illuminance value calculated in (1) is larger than the extinguishing illuminance value set higher than the target illuminance value.
According to a fourth aspect of the present invention, in the illumination control device according to the third aspect, the extinction illuminance value is set by an external signal.

請求項５記載の発明は、周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値が目標照度値よりも大きい状態が予め設定した所定時間継続した場合に照明器具を消灯制御する消灯制御手段とを備えたことにある。   The invention according to claim 5 measures the illuminance of the floor surface using a light detection means for detecting the brightness of the surroundings, and adjusts the luminous flux of the luminaire so as to obtain a pre-stored target illuminance value. In an illumination control device that controls the illuminance to be substantially constant, an external light illuminance value calculating unit that calculates an external light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the calculation unit And an extinguishing control unit for controlling the extinguishing of the luminaire when the external light illuminance value calculated in (1) is larger than the target illuminance value continues for a predetermined time.

請求項６記載の発明は、周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値が目標照度値よりも大きい場合に照明器具を消灯制御する消灯制御手段と、この消灯制御手段による照明器具の消灯制御後、外光照度値の低下により照明器具の再点灯が行われた場合は、予め設定した所定時間照明器具の再消灯を禁止する消灯禁止制御手段を備えたことにある。
請求項７記載の発明は、請求項５又は６記載の照明制御装置において、所定時間を外部信号によって設定することにある。 The invention according to claim 6 measures the illuminance of the floor surface using a light detection means for detecting the brightness of the surroundings, and adjusts the luminous flux of the luminaire so as to obtain a pre-stored target illuminance value. In an illumination control device that controls the illuminance to be substantially constant, an external light illuminance value calculating unit that calculates an external light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the calculation unit When the external light illuminance value calculated in step 1 is larger than the target illuminance value, the lighting control means for controlling the lighting equipment to turn off, and after the lighting equipment is turned off by the lighting control means, the lighting equipment is turned on again due to a decrease in the external light illumination value. In the case where it is performed, there is provided an extinguishing prohibition control means for prohibiting the extinguishment of the lighting fixture for a predetermined time set in advance.
According to a seventh aspect of the present invention, in the illumination control device according to the fifth or sixth aspect, the predetermined time is set by an external signal.

各請求項記載の発明によれば、床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御するものにおいて、照明のちらつきを防止でき、しかも、省エネルギー効果を簡便かつ有効に発揮できる。   According to the invention described in each claim, in measuring the illuminance of the floor surface and adjusting the luminous flux of the lighting fixture so as to obtain a pre-stored target illuminance value, the control is performed to keep the illuminance of the floor surface substantially constant. The flickering of the lighting can be prevented, and the energy saving effect can be easily and effectively exhibited.

請求項１及び２記載の発明によれば、さらに、外光照度値からの照度値の減算を調光度で設定しているので、反射率の高い部屋のように僅かの調光変化で大きく照度が変化する環境に適し、確実に照明のちらつきを防止できる。   According to the first and second aspects of the present invention, since the subtraction of the illuminance value from the external light illuminance value is set by the dimming degree, the illuminance is greatly increased by a slight dimming change like a room with high reflectivity. Suitable for changing environments and reliably prevents flickering of lighting.

請求項３記載の発明によれば、さらに、反射率の低い部屋のように調光変化に対して照度が大きく変化しない環境に適し、確実に照明のちらつきを防止できる。   According to the third aspect of the present invention, it is suitable for an environment where the illuminance does not change greatly with respect to the dimming change such as a room with low reflectance, and flickering of the illumination can be surely prevented.

以下、本発明の実施の形態を、図面を参照して説明する。
（第１の実施の形態）
図１に示すように、天井１に照明器具２及び明かり検出手段である照度センサ３を埋設している。前記照明器具２は床面４に向かって光を照射するように配置されている。また、部屋には窓を介して太陽光等の外光が入り込むようになっている。そして、床面４からの反射光を前記照度センサ３で検出し、床面４の照度を検出するようになっている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, a lighting fixture 2 and an illuminance sensor 3 that is a light detection means are embedded in a ceiling 1. The lighting fixture 2 is arranged to irradiate light toward the floor surface 4. In addition, outside light such as sunlight enters the room through a window. The reflected light from the floor surface 4 is detected by the illuminance sensor 3, and the illuminance of the floor surface 4 is detected.

前記照度センサ３からの照度検出信号を制御装置５に供給している。前記制御装置５は、照度センサ３からの照度検出信号により床面４の照度が略一定になるように前記照明器具２を消灯、全灯も含めて調光制御するようになっている。   An illuminance detection signal from the illuminance sensor 3 is supplied to the control device 5. The control device 5 controls the dimming of the lighting fixture 2 including all the lights so that the illuminance of the floor surface 4 becomes substantially constant by the illuminance detection signal from the illuminance sensor 3.

前記制御装置５は、図２に示すように、マイクロプロセッサ１１、メモリ１２、Ａ／Ｄ変換機能付き入力ポート１３及び照明インターフェース１４を備え、前記照度センサ３からの照度検出信号を入力ポート１３でデジタル化し、これをマイクロプロセッサ１１が取込んみ、メモリ１２に予め記憶してある目標照度値Ｌpやある調光度、例えば、調光度１０％で前記照明器具２を調光したときの床面４の照度値Ｌnを使用して演算を行い、照明インターフェース１４から前記照明器具２にこの照明器具２を消灯、全灯も含めて調光制御する調光信号を出力するようになっている。   As shown in FIG. 2, the control device 5 includes a microprocessor 11, a memory 12, an input port 13 with an A / D conversion function, and a lighting interface 14, and an illuminance detection signal from the illuminance sensor 3 is input to the input port 13. The floor surface 4 when the light is dimmed by the microprocessor 11 and the luminaire 2 is dimmed at a target illuminance value Lp or a dimming degree, for example, a dimming degree of 10%, which is stored in the memory 12 in advance. Then, the lighting interface 2 is turned off and the dimming signal for dimming control including all the lights is output from the lighting interface 14 to the lighting fixture 2.

前記メモリ１２に予め記憶するある調光度は、例えば、リモートコントローラの操作等によって外部信号により設定するようにしてもよい。このようにすれば、この調光度を可変することができる。すなわち、照度値Ｌnを得る調光度は１０％に限られるものではなく、例えば、１０％から２０％の範囲で可変することもできる。なお、ある調光度は１０％から２０％の範囲くらいが望ましいが、環境によってはこの範囲以外であってもかまわない。   The dimming degree stored in advance in the memory 12 may be set by an external signal by operating a remote controller, for example. In this way, the dimming degree can be varied. That is, the dimming degree for obtaining the illuminance value Ln is not limited to 10%, and can be varied in the range of 10% to 20%, for example. It should be noted that the dimming degree is preferably in the range of 10% to 20%, but it may be outside this range depending on the environment.

前記マイクロプロセッサ１１は、プログラムに基づいて図３に示す照明制御を行うようになっている。すなわち、Ｓ１にて、入力ポート１３から照度検出データを取得すると、Ｓ２にて、照明器具２が点灯中か否かをチェックし、点灯中であれば、Ｓ３にて、照度検出データから得た測定照度値Ｌmと前記メモリ１２に記憶されている目標照度値Ｌpとを比較する。すなわち、Ｓ４にて、Ｌm＞Ｌpか否かを判断する。   The microprocessor 11 performs illumination control shown in FIG. 3 based on a program. That is, when the illuminance detection data is acquired from the input port 13 in S1, it is checked in S2 whether or not the luminaire 2 is lit. If it is lit, it is obtained from the illuminance detection data in S3. The measured illuminance value Lm is compared with the target illuminance value Lp stored in the memory 12. That is, in S4, it is determined whether Lm> Lp.

Ｌm＜Ｌpであれば、Ｓ５にて、照明器具２の出力を増加させる調光信号を照明器具２に出力し、Ｓ１の処理へ戻る。なお、Ｌm＝Ｌpの場合は同一の調光制御を維持する。しかし、Ｌm＞Ｌpであれば、続いて、Ｓ６にて、調光制御は下限値で行っているか否かを判断する。これは、放電ランプをインバータで制御する場合、例えば全点灯（１００％点灯）から２５％点灯くらいまでは連続的に調光制御できるが、２５％を下回ると制御ができなくなり、一挙に消灯状態となる。このときの２５％が調光下限値となる。調光制御を下限値で行っていなければ、Ｓ７にて、照明器具２の出力を減少させる調光信号を照明器具２に出力し、Ｓ１の処理へ戻る。   If Lm <Lp, a dimming signal for increasing the output of the luminaire 2 is output to the luminaire 2 in S5, and the process returns to S1. Note that the same dimming control is maintained when Lm = Lp. However, if Lm> Lp, then in S6, it is determined whether or not the dimming control is performed at the lower limit value. This is because when the discharge lamp is controlled by an inverter, for example, dimming control can be performed continuously from full lighting (100% lighting) to about 25% lighting, but if it falls below 25%, control becomes impossible and the lamp is extinguished all at once. It becomes. 25% at this time is the light control lower limit. If the dimming control is not performed at the lower limit value, a dimming signal for decreasing the output of the lighting fixture 2 is output to the lighting fixture 2 in S7, and the process returns to S1.

Ｓ２にて照明器具２が消灯中になっていることが判断され、また、Ｓ６にて調光制御が下限値で行われていることが判断されると、Ｓ８にて、外光照度値Ｌsを算出する。照明器具２が消灯中であれば測定照度値Ｌmがそのまま外光照度値Ｌsになる。また、照明器具２が調光下限値で点灯している場合は、目標照度値Ｌpの設定時および現点灯時における照度と調光度合の関系から外光照度値Ｌsを算出する。すなわち、目標照度値Ｌpの設定時は外光を全く加味していないので照明器具２のみによる照度値が得られる。従って、外光を全く加味せずに照明器具２を調光下限値で点灯したときの照度値をＬaとすると、外光を加味したときの測定照度値Ｌmから照度値Ｌaを減算することで外光照度値Ｌsが得られる。   If it is determined in S2 that the luminaire 2 is turned off, and if it is determined in S6 that the dimming control is performed at the lower limit value, the external light illuminance value Ls is set in S8. calculate. If the lighting fixture 2 is turned off, the measured illuminance value Lm becomes the external light illuminance value Ls as it is. When the lighting fixture 2 is lit at the dimming lower limit value, the ambient light illuminance value Ls is calculated from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value Lp and the current lighting. That is, when setting the target illuminance value Lp, the illuminance value obtained only by the luminaire 2 is obtained because no external light is taken into account. Therefore, when the illuminance value when the luminaire 2 is turned on with the dimming lower limit value without adding external light at all is La, the illuminance value La is subtracted from the measured illuminance value Lm when external light is added. An ambient light illuminance value Ls is obtained.

続いて、Ｓ９にて、前記メモリ１２から調光度１０％で調光したときの照度値Ｌnを読み出し、外光照度値Ｌsから照度値Ｌnを減算して補正照度値Ｌxを算出する。そして、Ｓ１０にて、Ｌx＞Ｌpかをチェックし、Ｌx＞Ｌpであれば、Ｓ１１にて、照明器具２が点灯中か否かを判断し、点灯中であれば、Ｓ１２にて、照明器具２を消灯制御し、Ｓ１の処理へ戻る。また、消灯中であれば、そのままＳ１の処理へ戻る。   Subsequently, in S9, the illuminance value Ln when the dimming degree is 10% is read from the memory 12, and the corrected illuminance value Lx is calculated by subtracting the illuminance value Ln from the external light illuminance value Ls. In S10, it is checked whether Lx> Lp. If Lx> Lp, it is determined in S11 whether or not the luminaire 2 is lit. If it is lit, the luminaire is determined in S12. 2 is turned off, and the process returns to S1. If the light is off, the process returns to S1 as it is.

また、Ｌx≦Ｌpであれば、Ｓ１３にて、照明器具２が消灯中か否かを判断し、消灯中であれば、Ｓ１４にて、測定照度値Ｌmが目標照度値Ｌp以下になったか否かをチェックし、目標照度値Ｌp以下になっていれば、Ｓ１５にて、照明器具２を調光下限値で点灯制御し、Ｓ１の処理へ戻る。また、測定照度値Ｌmが目標照度値Ｌpを越えていれば、そのままＳ１の処理へ戻る。   If Lx ≦ Lp, it is determined in S13 whether or not the lighting fixture 2 is extinguished. If it is extinguished, whether or not the measured illuminance value Lm is equal to or less than the target illuminance value Lp in S14. If it is less than or equal to the target illuminance value Lp, lighting control of the lighting fixture 2 is performed at the dimming lower limit value in S15, and the process returns to S1. If the measured illuminance value Lm exceeds the target illuminance value Lp, the process returns to S1 as it is.

このような構成において、例えば、照明器具２のみで全灯したときの床面４の照度が８００ルックスで目標照度値Ｌpが６００ルックスであった場合において、８時から１９時において、外光のみによる外光照度値Ｌsが図４のグラフｇ１に示すように変化したとすると、照明器具２の調光度合は図４のグラフｇ２に示すように変化する。なお、照明器具２の調光下限値は２５％である。これにより、床面４の照度値、すなわち、測定照度値Ｌmは図４のグラフｇ３に示すように、略６００ルックスを維持するように変化する。   In such a configuration, for example, when the illuminance of the floor surface 4 is 800 lux and the target illuminance value Lp is 600 lux when all the lights are lit only with the lighting fixture 2, only the external light is from 8:00 to 19:00. If the external light illuminance value Ls due to changes as shown in the graph g1 of FIG. 4, the dimming degree of the lighting fixture 2 changes as shown in the graph g2 of FIG. In addition, the light control lower limit of the lighting fixture 2 is 25%. Thereby, the illuminance value of the floor surface 4, that is, the measured illuminance value Lm changes so as to maintain approximately 600 lux as shown in the graph g3 of FIG.

このような制御において、外光量が比較的多い場合、照明器具２は調光下限値で点灯制御されるか消灯制御される。しかし、外光は雲の影響や人が窓の側を通過するなどの影響によって変化し易く、このため、外光による床面４の変化は大きい。従って、外光のみで目標照度値Ｌpの６００ルックスが得られると照明器具２を消灯し、外光のみの照度値Ｌsが目標照度値Ｌpよりも低下すると照明器具２を点灯するという制御を行った場合、照明器具２が外光の変化によって頻繁に点灯と消灯を繰り返すという問題が発生する。   In such control, when the amount of external light is relatively large, the lighting fixture 2 is controlled to be turned on or off with the dimming lower limit value. However, external light is likely to change due to the influence of clouds and the effect of people passing through the windows, and therefore the change in the floor surface 4 due to external light is large. Accordingly, the lighting fixture 2 is turned off when 600 lux of the target illuminance value Lp is obtained only with outside light, and the lighting fixture 2 is turned on when the illuminance value Ls of only outside light falls below the target illuminance value Lp. In such a case, there arises a problem that the lighting fixture 2 is frequently turned on and off due to a change in external light.

これに対し、この実施の形態では、照明器具２を調光下限値で点灯制御している状態では外光のみによる照度値Ｌsと目標照度値Ｌpとをそのまま比較せずに、外光照度値Ｌsから、調光度１０％で調光したときの照度値Ｌnを減算して補正照度値Ｌxを算出し、この補正照度値Ｌxと目標照度値Ｌpを比較するようにしている。   On the other hand, in this embodiment, in the state where the lighting fixture 2 is controlled to be lit with the dimming lower limit value, the illuminance value Ls based only on the external light and the target illuminance value Lp are not compared as they are, and the external light illuminance value Ls. Thus, the corrected illuminance value Lx is calculated by subtracting the illuminance value Ln when the dimming degree is 10%, and the corrected illuminance value Lx and the target illuminance value Lp are compared.

従って、照度値Ｌnが例えば１００ルックスであると、外光照度値Ｌsが目標照度値Ｌpを上回る６５０ルックスあっても補正照度値Ｌxが５５０ルックスと目標照度値Ｌpよりも低いので、照明器具２は調光下限値で点灯し続けることになる。そして、このときの床面４の照度値は、照明器具２が調光下限値（２５％）で点灯したときの床面４の照度値を２５０ルックスとすると、（２５０＋６５０）ルックス、すなわち、９００ルックスとなる。   Therefore, if the illuminance value Ln is, for example, 100 lux, the corrected illuminance value Lx is 550 lux, which is lower than the target illuminance value Lp, even if the external light illuminance value Ls is 650 lux, which exceeds the target illuminance value Lp. The light will continue to be lit at the dimming lower limit. The illuminance value of the floor surface 4 at this time is (250 + 650) lux, that is, 900, assuming that the illuminance value of the floor surface 4 when the lighting fixture 2 is lit at the dimming lower limit (25%) is 250 lux. Looks.

そして、補正照度値Ｌxが目標照度値Ｌpよりも大きくなると、すなわち、外光照度値Ｌsが７００ルックス以上になると、そのときに照明器具２は消灯制御される。そして、一旦消灯された照明器具２が再度点灯する場合は外光照度値Ｌsが目標照度値Ｌpの６００ルックス以下にならなければならないため、このため、外光が６００ルックスから７００ルックスの範囲内で変化している限りは照明器具２が点灯と消灯を繰り返すことはない。   When the corrected illuminance value Lx becomes larger than the target illuminance value Lp, that is, when the external light illuminance value Ls becomes 700 lux or more, the lighting fixture 2 is controlled to be turned off at that time. When the lighting fixture 2 once turned off is turned on again, the external light illuminance value Ls must be 600 lux or less of the target illuminance value Lp. Therefore, the external light is in the range of 600 lux to 700 lux. As long as it changes, the lighting fixture 2 will not repeat lighting and extinguishing.

これにより、床面４が目標照度値Ｌp近傍にあるときに外光の変化によって照明器具２が頻繁に点灯と消灯を繰り返すのを防止できる。すなわち、照明のちらつきを防止できる。しかも、外光照度値Ｌsが目標照度値Ｌpよりも十分に大きいときには照明器具２を消灯させるので、省エネルギー効果を簡便かつ有効に発揮できる。なお、外光変化が比較的大きいような環境では、照度値Ｌnを得る調光度を例えば２０％にするなど大きくすれば良い。   Thereby, when the floor surface 4 is in the vicinity of the target illuminance value Lp, it is possible to prevent the lighting fixture 2 from being frequently turned on and off due to a change in external light. That is, flickering of illumination can be prevented. Moreover, since the luminaire 2 is turned off when the external light illuminance value Ls is sufficiently larger than the target illuminance value Lp, the energy saving effect can be easily and effectively exhibited. In an environment where the change in outside light is relatively large, the dimming degree for obtaining the illuminance value Ln may be increased, for example, to 20%.

また、目標照度値Ｌpと比較する補正照度値Ｌxを得るのに、外光照度値Ｌsからある調光度、例えば調光度１０％〜２０％程度で点灯したときの照度値Ｌnを減算するようにしているので、環境が反射率の高い部屋のように僅かの調光変化で大きく照度が変化する環境においては減算する照度値Ｌnが増加するので、このような環境にも十分に対処することができ、確実に照明のちらつきを防止できる。   Further, in order to obtain the corrected illuminance value Lx to be compared with the target illuminance value Lp, the illuminance value Ln when the light is turned on at a certain dimming degree, for example, about 10% to 20%, is subtracted from the external light illuminance value Ls. Therefore, since the illuminance value Ln to be subtracted increases in an environment where the illuminance changes greatly due to a slight change in dimming, such as a room with high reflectivity, such an environment can be sufficiently dealt with. It is possible to reliably prevent flickering of lighting.

（第２の実施の形態）
この実施の形態においても全体の構成及び制御装置の構成は図１及び図２と同様である。異なる点はマイクロプロセッサ１１による照明制御である。すなわち、マイクロプロセッサ１１は、プログラムに基づいて図５に示す照明制御を行うようになっている。
Ｓ２１〜Ｓ２８の処理は、前述した図３におけるＳ１〜Ｓ８の処理と同じである。 (Second Embodiment)
Also in this embodiment, the overall configuration and the configuration of the control device are the same as those in FIGS. The difference is the illumination control by the microprocessor 11. That is, the microprocessor 11 performs illumination control shown in FIG. 5 based on the program.
The processing of S21 to S28 is the same as the processing of S1 to S8 in FIG.

Ｓ２２にて照明器具２が消灯中になっていることが判断され、また、Ｓ２６にて調光制御が下限値で行われていることが判断されると、Ｓ２８にて、外光照度値Ｌsを算出する。続いて、Ｓ２９にて、外光照度値Ｌsとメモリ１２に予め記憶してある消灯照度値Ｌpxと比較する。このときの消灯照度値Ｌpxは目標照度値Ｌpによりも照度値αだけ高く設定した値になっている。前記メモリ１２に予め記憶する消灯照度値Ｌpxは、例えば、リモートコントローラの操作等によって外部信号により設定するようにしてもよい。このようにすれば、この消灯照度値Ｌpxを可変することができる。   If it is determined in S22 that the lighting fixture 2 is turned off, and if it is determined in S26 that the dimming control is performed at the lower limit value, the external light illuminance value Ls is set in S28. calculate. Subsequently, in S29, the external light illuminance value Ls is compared with the extinction illuminance value Lpx stored in the memory 12 in advance. The extinction illuminance value Lpx at this time is a value set higher by the illuminance value α than the target illuminance value Lp. The extinction illuminance value Lpx stored in advance in the memory 12 may be set by an external signal by operating a remote controller, for example. In this way, the extinction illuminance value Lpx can be varied.

そして、Ｌs＞Ｌpxであれば、Ｓ３０にて、照明器具２が点灯中か否かを判断し、点灯中であれば、Ｓ３１にて、照明器具２を消灯制御し、Ｓ２１の処理へ戻る。また、消灯中であれば、そのままＳ２１の処理へ戻る。また、Ｌs≦Ｌpxであれば、Ｓ３２にて、照明器具２が消灯中か否かを判断し、消灯中であれば、Ｓ３３にて、測定照度値Ｌmが目標照度値Ｌp以下になったか否かをチェックし、目標照度値Ｌp以下になっていれば、Ｓ３４にて、照明器具２を調光下限値で点灯制御し、Ｓ２１の処理へ戻る。また、測定照度値Ｌmが目標照度値Ｌpを越えていれば、そのままＳ２１の処理へ戻る。   If Ls> Lpx, it is determined in S30 whether or not the lighting fixture 2 is turned on. If it is turned on, the lighting fixture 2 is controlled to be turned off in S31, and the process returns to S21. If the light is off, the process returns to S21 as it is. If Ls ≦ Lpx, it is determined in S32 whether or not the lighting fixture 2 is extinguished. If it is extinguished, whether or not the measured illuminance value Lm is equal to or less than the target illuminance value Lp in S33. If it is less than the target illuminance value Lp, lighting control of the lighting fixture 2 is performed at the dimming lower limit value in S34, and the process returns to S21. If the measured illuminance value Lm exceeds the target illuminance value Lp, the process returns to S21 as it is.

このように、目標照度値Ｌpによりも照度値αだけ高く設定した消灯照度値Ｌpxを用いて外光照度値Ｌsと比較し、照明器具２が調光下限値で点灯しているときに外光照度値Ｌsが消灯照度値Ｌpxを越えると照明器具２を消灯制御し、その後、測定照度値Ｌmが目標照度値Ｌp以下にならなければ照明器具２を再点灯しないので、このような制御においても床面４が目標照度値Ｌp近傍にあるときに外光の変化によって照明器具２が頻繁に点灯と消灯を繰り返すのを防止できる。すなわち、照明のちらつきを防止できる。しかも、外光照度値Ｌsが消灯照度値Ｌpxよりも大きいときには照明器具２を消灯させるので、省エネルギー効果を簡便かつ有効に発揮できる。   In this way, when compared with the external light illuminance value Ls using the extinction illuminance value Lpx set higher by the illuminance value α than the target illuminance value Lp, the external light illuminance value when the lighting fixture 2 is lit at the dimming lower limit value. When Ls exceeds the extinction illuminance value Lpx, the luminaire 2 is controlled to be extinguished, and then the luminaire 2 is not lit again unless the measured illuminance value Lm is less than or equal to the target illuminance value Lp. When 4 is in the vicinity of the target illuminance value Lp, it is possible to prevent the lighting fixture 2 from being frequently turned on and off due to a change in external light. That is, flickering of illumination can be prevented. Moreover, since the lighting fixture 2 is turned off when the external light illuminance value Ls is larger than the turn-off illuminance value Lpx, the energy saving effect can be easily and effectively exhibited.

（第３の実施の形態）
この実施の形態においても全体の構成及び制御装置の構成は図１及び図２と同様である。異なる点はマイクロプロセッサ１１による照明制御である。すなわち、マイクロプロセッサ１１は、プログラムに基づいて図６に示す照明制御を行うようになっている。
Ｓ４１〜Ｓ４８の処理は、前述した図３におけるＳ１〜Ｓ８の処理と同じである。 (Third embodiment)
Also in this embodiment, the overall configuration and the configuration of the control device are the same as those in FIGS. The difference is the illumination control by the microprocessor 11. That is, the microprocessor 11 performs illumination control shown in FIG. 6 based on the program.
The processing of S41 to S48 is the same as the processing of S1 to S8 in FIG.

Ｓ４２にて照明器具２が消灯中になっていることが判断され、また、Ｓ４６にて調光制御が下限値で行われていることが判断されると、Ｓ４８にて、外光照度値Ｌsを算出する。続いて、Ｓ４９にて、外光照度値Ｌsとメモリ１２に予め記憶してある目標照度値Ｌpとを比較する。   If it is determined in S42 that the lighting fixture 2 is turned off, and if it is determined in S46 that the dimming control is performed at the lower limit value, the external light illuminance value Ls is set in S48. calculate. Subsequently, in S49, the external light illuminance value Ls is compared with the target illuminance value Lp stored in the memory 12 in advance.

そして、Ｌs＞Ｌpであれば、Ｓ５０にて、この状態が所定時間継続したかをチェックする。これは、例えば、Ｌs＞Ｌpを判断するとメモリ１２に設けたフラグを「１」にセットするとともに同じくメモリ１２に設けたカウンタを計時動作させ、このカウンタが所定時間をカウントする前にＬs≦Ｌpを判断するとフラグを「０」にクリアするとともにカウンタをクリアするという制御を行うことで実現される。   If Ls> Lp, it is checked in S50 whether this state has continued for a predetermined time. For example, if Ls> Lp is determined, the flag provided in the memory 12 is set to “1” and the counter provided in the memory 12 is also operated for time measurement. Before this counter counts a predetermined time, Ls ≦ Lp Is determined, the flag is cleared to “0” and the counter is cleared.

Ｌs＞Ｌpの状態が所定時間継続すると、続いて、Ｓ５１にて、照明器具２が点灯中か否かを判断し、点灯中であれば、Ｓ５２にて、照明器具２を消灯制御し、Ｓ４１の処理へ戻る。また、Ｌs＞Ｌpの状態が所定時間継続しない場合、あるいは、所定時間継続しても既に消灯中であれば、そのままＳ４１の処理へ戻る。   When the state of Ls> Lp continues for a predetermined time, subsequently, in S51, it is determined whether or not the lighting fixture 2 is turned on. If it is turned on, the lighting fixture 2 is controlled to be turned off in S52, and S41. Return to the process. If the state of Ls> Lp does not continue for a predetermined time, or if it is already turned off even if it continues for a predetermined time, the process returns to S41 as it is.

また、Ｌs≦Ｌpであれば、Ｓ５３にて、照明器具２が消灯中か否かを判断し、消灯中であれば、Ｓ５４にて、照明器具２を調光下限値で点灯制御し、Ｓ４１の処理へ戻る。また、照明器具２が点灯していれば、そのままＳ４１の処理へ戻る。
前記カウンタが計時する所定時間は、例えばリモートコントローラの操作等によって外部信号により設定するようにしてもよい。このようにすれば所定時間を可変することができる。 If Ls ≦ Lp, it is determined in S53 whether or not the lighting fixture 2 is extinguished. If it is extinguished, the lighting fixture 2 is controlled to be lit at the dimming lower limit value in S54, and S41. Return to the process. Moreover, if the lighting fixture 2 is lighting, it will return to the process of S41 as it is.
The predetermined time counted by the counter may be set by an external signal by operating a remote controller, for example. In this way, the predetermined time can be varied.

このように、外光照度値Ｌsが目標照度値Ｌpを越えても照明器具２を消灯させず、この状態が所定時間継続したときに照明器具２を消灯制御するようにしているので、床面４が目標照度値Ｌp近傍にあるときに外光の変化があってもその変化が所定時間内であれば影響を受けずに照明器具２は点灯し続けることになる。従って、外光の変化によって照明器具２が頻繁に点灯と消灯を繰り返すのを防止できる。すなわち、照明のちらつきを防止できる。しかも、外光照度値Ｌsが目標照度値Ｌpよりも大きい状態が所定時間継続した場合には照明器具２を消灯させるので、省エネルギー効果を簡便かつ有効に発揮できる。   In this way, even if the external light illuminance value Ls exceeds the target illuminance value Lp, the lighting fixture 2 is not turned off, and the lighting fixture 2 is controlled to be turned off when this state continues for a predetermined time. Even if there is a change in the external light when is in the vicinity of the target illuminance value Lp, if the change is within a predetermined time, the lighting fixture 2 continues to be lit without being affected. Therefore, it can prevent that the lighting fixture 2 repeats lighting and extinction frequently by the change of external light. That is, flickering of illumination can be prevented. Moreover, since the lighting fixture 2 is turned off when the ambient light illuminance value Ls is larger than the target illuminance value Lp for a predetermined time, the energy saving effect can be easily and effectively exhibited.

（第４の実施の形態）
この実施の形態においても全体の構成及び制御装置の構成は図１及び図２と同様である。異なる点はマイクロプロセッサ１１による照明制御である。すなわち、マイクロプロセッサ１１は、プログラムに基づいて図７に示す照明制御を行うようになっている。
Ｓ６１〜Ｓ６８の処理は、前述した図３におけるＳ１〜Ｓ８の処理と同じである。 (Fourth embodiment)
Also in this embodiment, the overall configuration and the configuration of the control device are the same as those in FIGS. The difference is the illumination control by the microprocessor 11. That is, the microprocessor 11 performs illumination control shown in FIG. 7 based on the program.
The processing of S61 to S68 is the same as the processing of S1 to S8 in FIG.

Ｓ６２にて照明器具２が消灯中になっていることが判断され、また、Ｓ６６にて調光制御が下限値で行われていることが判断されると、Ｓ６８にて、外光照度値Ｌsを算出する。続いて、Ｓ６９にて、外光照度値Ｌsとメモリ１２に予め記憶してある目標照度値Ｌpとを比較する。   If it is determined in S62 that the luminaire 2 is turned off, and if it is determined in S66 that the dimming control is performed at the lower limit value, the external light illuminance value Ls is set in S68. calculate. Subsequently, in S69, the external light illuminance value Ls is compared with the target illuminance value Lp stored in the memory 12 in advance.

そして、Ｌs＞Ｌpであれば、続いて、Ｓ７０にて、照明器具２が点灯中か否かを判断し、点灯中であれば、Ｓ７１にて、フラグＦＬ＝１か否かを判断する。ＦＬ＝１であれば、続いて、Ｓ７２にて、点灯状態が所定時間継続したか否かをチェックする。点灯状態が所定時間継続していれば、Ｓ７３にて、フラグＦＬを「０」にし、Ｓ７４にて、照明器具２を消灯制御し、Ｓ６１の処理へ戻る。この場合も所定時間の計時動作はメモリ１２に設けたカウンタによって行うことになる。また、点灯状態が所定時間継続していなければ、そのままＳ６１の処理へ戻る。   If Ls> Lp, then in S70, it is determined whether or not the lighting fixture 2 is lit. If it is lit, it is determined in S71 whether or not the flag FL = 1. If FL = 1, then in S72, it is checked whether or not the lighting state has continued for a predetermined time. If the lighting state continues for a predetermined time, the flag FL is set to “0” in S73, the lighting fixture 2 is controlled to be turned off in S74, and the process returns to S61. In this case as well, the time keeping operation for a predetermined time is performed by a counter provided in the memory 12. If the lighting state does not continue for a predetermined time, the process returns to S61 as it is.

また、Ｓ７１にて、ＦＬ＝０を判断すると、Ｓ７５にて、照明器具２を消灯制御し、Ｓ６１の処理へ戻る。また、Ｓ７０にて、照明器具２が消灯中であることを判断すると、そのままＳ６１の処理へ戻る。また、Ｓ６９にて、Ｌs≦Ｌpを判断すると、Ｓ７６にて、照明器具２が消灯中であるか否かを判断し、消灯中を判断すると、Ｓ７７にて、フラグＦＬ＝１にセットし、Ｓ７８にて、照明器具２を点灯制御し、Ｓ６１の処理へ戻る。また、Ｓ７６にて、照明器具２が点灯中であることを判断すると、そのままＳ６１の処理へ戻る。
前記カウンタが計時する所定時間は、例えばリモートコントローラの操作等によって外部信号により設定するようにしてもよい。このようにすれば所定時間を可変することができる。 If FL = 0 is determined in S71, the lighting apparatus 2 is controlled to be turned off in S75, and the process returns to S61. If it is determined in S70 that the lighting fixture 2 is turned off, the process returns to S61 as it is. If it is determined in S69 that Ls ≦ Lp, it is determined in S76 whether or not the luminaire 2 is turned off. If it is determined that it is turned off, the flag FL = 1 is set in S77. In S78, lighting control of the lighting fixture 2 is performed, and the process returns to S61. If it is determined in S76 that the lighting fixture 2 is being lit, the process returns to S61 as it is.
The predetermined time counted by the counter may be set by an external signal by operating a remote controller, for example. In this way, the predetermined time can be varied.

このような構成においては、電源を投入して照明器具２を点灯した後、最初に外光照度値Ｌsが目標照度値Ｌpを越えたときには、フラグＦＬ＝０になっているので、Ｓ７５にて照明器具２が消灯制御される。その後、外光照度値Ｌsが目標照度値Ｌp以下になることがあると、Ｓ７７にてフラグＦＬ＝１にセットされ、Ｓ７８にて照明器具２が点灯制御される。   In such a configuration, after the power is turned on and the lighting fixture 2 is turned on, when the external light illuminance value Ls first exceeds the target illuminance value Lp, the flag FL = 0. The appliance 2 is controlled to be turned off. Thereafter, when the external light illuminance value Ls may become equal to or less than the target illuminance value Lp, the flag FL = 1 is set in S77, and the lighting fixture 2 is controlled to be turned on in S78.

この状態で外光照度値Ｌsが目標照度値Ｌpを越えることがあると、照明器具２は直ちに消灯制御されることはない。すなわち、ＦＬ＝１にセットされているので、Ｓ７２にてこの状態が所定時間継続されているかが判断される。そして、Ｌs＞Ｌpの状態が所定時間継続されたときのみ照明器具２は消灯制御される。しかし、Ｌs＞Ｌpの状態が所定時間継続されず、途中でＬs≦Ｌpの状態が判断されるとカウンタがクリアされ、再度所定時間を計時するようになる。   If the external light illuminance value Ls may exceed the target illuminance value Lp in this state, the lighting fixture 2 is not immediately controlled to be turned off. That is, since FL = 1 is set, it is determined in S72 whether this state has continued for a predetermined time. The lighting fixture 2 is controlled to be turned off only when the state of Ls> Lp is continued for a predetermined time. However, if the state of Ls> Lp is not continued for a predetermined time, and the state of Ls ≦ Lp is determined on the way, the counter is cleared and the predetermined time is counted again.

このように、照明器具２が再点灯されたときには、外光照度値Ｌsが目標照度値Ｌpを越えても照明器具２を消灯させず、この状態が所定時間継続したとき照明器具２が消灯制御されるので、再点灯時には床面４が目標照度値Ｌp近傍にあるときに外光の変化があってもその変化が所定時間内であれば影響を受けずに照明器具２は点灯し続けることになる。従って、外光の変化によって照明器具２が頻繁に点灯と消灯を繰り返すのを防止できる。すなわち、照明のちらつきを防止できる。しかも、外光照度値Ｌsが目標照度値Ｌpよりも大きい状態が所定時間継続した場合には再点灯した照明器具２を消灯させるので、省エネルギー効果を簡便かつ有効に発揮できる。   Thus, when the luminaire 2 is turned on again, the luminaire 2 is not turned off even when the ambient light illuminance value Ls exceeds the target illuminance value Lp. When this state continues for a predetermined time, the luminaire 2 is controlled to be turned off. Therefore, at the time of relighting, even if there is a change in outside light when the floor surface 4 is in the vicinity of the target illuminance value Lp, the lighting fixture 2 will remain on without being affected if the change is within a predetermined time. Become. Therefore, it can prevent that the lighting fixture 2 repeats lighting and extinction frequently by the change of external light. That is, flickering of illumination can be prevented. Moreover, when the external light illuminance value Ls is larger than the target illuminance value Lp for a predetermined time, the re-illuminated lighting fixture 2 is extinguished, so that the energy saving effect can be exhibited easily and effectively.

本発明の、第１の実施の形態に係る全体の構成を示す図。The figure which shows the whole structure which concerns on 1st Embodiment of this invention. 同実施の形態における制御装置の構成を示すブロック図。The block diagram which shows the structure of the control apparatus in the embodiment. 同実施の形態における制御装置のマイクロプロセッサが行う照明制御を示す流れ図。The flowchart which shows the illumination control which the microprocessor of the control apparatus in the embodiment performs. 同実施の形態において、例えば、８時から１９時までの外光照度値の変化と照明器具の調光度合及び測定照度値の変化との関係の一例を示すグラフ。In the embodiment, for example, a graph showing an example of a relationship between a change in illuminance value of external light from 8:00 to 19:00, a dimming degree of a lighting fixture, and a change in measured illuminance value. 本発明の、第２の実施の形態に係る制御装置のマイクロプロセッサが行う照明制御を示す流れ図。The flowchart which shows the illumination control which the microprocessor of the control apparatus which concerns on the 2nd Embodiment of this invention performs. 本発明の、第３の実施の形態に係る制御装置のマイクロプロセッサが行う照明制御を示す流れ図。The flowchart which shows the illumination control which the microprocessor of the control apparatus which concerns on the 3rd Embodiment of this invention performs. 本発明の、第４の実施の形態に係る制御装置のマイクロプロセッサが行う照明制御を示す流れ図。The flowchart which shows the illumination control which the microprocessor of the control apparatus which concerns on the 4th Embodiment of this invention performs.

符号の説明Explanation of symbols

２…照明器具、３…照度センサ、５…制御装置、１１…マイクロプロセッサ。   2 ... Lighting equipment, 3 ... Illuminance sensor, 5 ... Control device, 11 ... Microprocessor.

Claims (7)

周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、
目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値から前記照明器具をある調光度で点灯したときの照度値を減算する減算手段と、この減算手段にて減算した結果の照度値が前記目標照度値よりも大きい場合に前記照明器具を消灯制御する消灯制御手段とを備えたことを特徴とする照明制御装置。 Measures the illuminance of the floor using a light detection means that detects the ambient brightness, and adjusts the luminous flux of the luminaire so that the target illuminance value is stored in advance to control the illuminance of the floor to be substantially constant. In the lighting control device to
The external light illuminance value calculating means for calculating the external light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the lighting fixture from the external light illuminance value calculated by the calculating means Subtracting means for subtracting the illuminance value when turned on, and an extinguishing control means for controlling the lighting device to be extinguished when the illuminance value as a result of subtraction by the subtracting means is larger than the target illuminance value A lighting control device characterized by the above. 減算手段は、外光照度値から減算する照度値を決める照明器具のある調光度を、１０〜２０％程度の調光度に設定したことを特徴とする請求項１記載の照明制御装置。   2. The illumination control apparatus according to claim 1, wherein the subtracting means sets a dimming degree of a lighting fixture for determining an illuminance value to be subtracted from an external light illuminance value to a dimming degree of about 10 to 20%. 周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、
目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値が、目標照度値よりも高く設定した消灯照度値よりも大きい場合に前記照明器具を消灯制御する消灯制御手段とを備えたことを特徴とする照明制御装置。 Measures the illuminance of the floor using a light detection means that detects ambient brightness, and adjusts the luminous flux of the luminaire so that the target illuminance value is stored in advance to control the illuminance of the floor to be substantially constant. In the lighting control device to
The ambient light illuminance value calculating means for calculating the ambient light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the ambient light illuminance value calculated by this calculating means is higher than the target illuminance value An illumination control apparatus comprising: an extinguishing control unit that controls the extinguishing of the luminaire when the illuminance value is larger than a set extinction illuminance value. 消灯照度値は、外部信号によって設定することを特徴とする請求項３記載の照明制御装置。   4. The illumination control device according to claim 3, wherein the extinction illuminance value is set by an external signal. 周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、
目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値が前記目標照度値よりも大きい状態が予め設定した所定時間継続した場合に前記照明器具を消灯制御する消灯制御手段とを備えたことを特徴とする照明制御装置。 Measures the illuminance of the floor using a light detection means that detects ambient brightness, and adjusts the luminous flux of the luminaire so that the target illuminance value is stored in advance to control the illuminance of the floor to be substantially constant. In the lighting control device to
An external light illuminance value calculating means for calculating an external light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the external light illuminance value calculated by the calculating means is larger than the target illuminance value An illumination control apparatus comprising: an extinguishing control unit configured to control the extinguishing of the luminaire when the state continues for a preset time. 周囲の明るさを検出する明かり検出手段を用いて床面の照度を測定し、予め記憶した目標照度値になるように照明器具の光束を調整して床面の照度を略一定に保つよう制御する照明制御装置において、
目標照度値設定時および現点灯時における照度と調光度合の関系から、外光照度値を算出する外光照度値算出手段と、この算出手段で算出した外光照度値が前記目標照度値よりも大きい場合に前記照明器具を消灯制御する消灯制御手段と、この消灯制御手段による前記照明器具の消灯制御後、外光照度値の低下により前記照明器具の再点灯が行われた場合は、予め設定した所定時間前記照明器具の再消灯を禁止する消灯禁止制御手段を備えたことを特徴とする照明制御装置。 Measures the illuminance of the floor using a light detection means that detects the ambient brightness, and adjusts the luminous flux of the luminaire so that the target illuminance value is stored in advance to control the illuminance of the floor to be substantially constant. In the lighting control device to
An external light illuminance value calculating means for calculating an external light illuminance value from the relationship between the illuminance and the dimming degree at the time of setting the target illuminance value and the current lighting, and the external light illuminance value calculated by the calculating means is larger than the target illuminance value A lighting control means for controlling the lighting equipment to be turned off, and after the lighting equipment is turned off by the lighting control means, when the lighting equipment is turned on again due to a decrease in the illuminance value of the external light, a predetermined preset value is set. An illumination control apparatus comprising a turn-off prohibition control unit that prohibits the light fixture from turning off again for a time. 所定時間は、外部信号によって設定することを特徴とする請求項５又は６記載の照明制御装置。   7. The lighting control apparatus according to claim 5, wherein the predetermined time is set by an external signal.
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