JPH11307274A - Lighting system - Google Patents
Lighting systemInfo
- Publication number
- JPH11307274A JPH11307274A JP10111892A JP11189298A JPH11307274A JP H11307274 A JPH11307274 A JP H11307274A JP 10111892 A JP10111892 A JP 10111892A JP 11189298 A JP11189298 A JP 11189298A JP H11307274 A JPH11307274 A JP H11307274A
- Authority
- JP
- Japan
- Prior art keywords
- lighting
- turned
- dimming
- light
- illuminance sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、照度センサおよ
び調光装置を有する複数の照明器具からなる照明装置に
関するものである。[0001] 1. Field of the Invention [0002] The present invention relates to a lighting device including a plurality of lighting fixtures having an illuminance sensor and a light control device.
【０００２】[0002]
【従来の技術】被照射面の照度を検知する照度センサ
と、この照度センサからの検知信号により調光制御を行
なう調光装置と、この調光装置からの調光信号により調
光制御される光源とを備えた複数の照明器具を有する照
明装置がある。各照明器具は、電源を投入すると点灯し
それと同時に照度センサが動作を始め、被照射面の照度
を検知し、適正な照度になるように光源の出力を調整す
る。適正な照度は、被照射面が暗ければ光源の出力を上
げ、被照射面が明るければ光源の出力を下げるようにな
っている。2. Description of the Related Art An illuminance sensor for detecting illuminance of a surface to be illuminated, a dimming device for performing dimming control based on a detection signal from the illuminance sensor, and dimming control based on a dimming signal from the dimming device. 2. Description of the Related Art There is a lighting device including a plurality of lighting fixtures each including a light source. Each lighting device is turned on when the power is turned on, and at the same time, the illuminance sensor starts operating, detects the illuminance on the surface to be illuminated, and adjusts the output of the light source so that the illuminance becomes appropriate. An appropriate illuminance is such that the output of the light source is increased when the surface to be irradiated is dark, and the output of the light source is decreased when the surface to be irradiated is bright.
【０００３】[0003]
【発明が解決しようとする課題】しかし、電源系統が別
の複数の照明器具の各照度センサが互いに近接して設置
されると、夜など周囲が暗いときに、先に１つの照明器
具を点灯し、次に別の近接した照明器具が点灯すると、
先に点灯した照明器具の光を検知して明るいと判断し、
後から電源を投入した照明器具は暗くなってしまうとい
う問題があった。However, if the illuminance sensors of a plurality of lighting devices having different power supply systems are installed close to each other, one lighting device is turned on first when the surroundings are dark such as at night. Then, when another nearby light comes on,
Detects the light of the lighting fixture that was turned on earlier and determines that it is bright,
There was a problem that the lighting equipment to which the power was turned on later became dark.
【０００４】また各々の照明装置間で光源の出力のずれ
およびむらが生じる。これを避けるためには別電源系統
の各照明器具を同時に投入する必要がある。したがっ
て、この発明の目的は、電源系統が別の複数の照明器具
の照度センサが互いに近接して設置されても、夜など周
囲が暗いときに先に１つの照明器具を点灯し、次に別の
近接した照明器具を点灯しても、先に点灯した照明器具
の光源の光の影響を受けて後から点灯した照明器具が暗
くならないようにすることができる照明装置を提供する
ことである。[0004] In addition, deviations and irregularities in the output of the light source occur among the respective lighting devices. In order to avoid this, it is necessary to turn on each lighting fixture of another power supply system at the same time. Therefore, an object of the present invention is to turn on one lighting apparatus first when the surroundings are dark, such as at night, and then turn on another lighting apparatus even if the illuminance sensors of a plurality of lighting apparatuses having different power supply systems are installed close to each other. It is an object of the present invention to provide a lighting device that can prevent a lighting device that is turned on later from becoming dark due to the influence of light from a light source of a lighting device that is turned on first even if the lighting device that is located close to the lighting device is turned on.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の照明装置
は、被照射面の照度を検知する照度センサと、この照度
センサからの検知信号により調光制御を行なう調光装置
と、この調光装置からの調光信号により調光制御される
光源とを備えた複数の照明器具を有する照明装置におい
て、先に点灯した第１の前記照明器具に対して後から点
灯する第２の前記照明器具の点灯開始時に、前記第１の
照明器具の調光状態の明るさに比べて少なくとも略同等
かそれ以上に明るさで点灯することを特徴とするもので
ある。According to a first aspect of the present invention, there is provided a lighting device, comprising: an illuminance sensor for detecting illuminance on a surface to be illuminated; a dimming device for performing dimming control based on a detection signal from the illuminance sensor; A lighting device having a plurality of lighting fixtures each including a light source that is dimmed and controlled by a dimming signal from the light device, wherein the first lighting fixture that is turned on first is turned on later, and the second lighting is turned on later. At the start of lighting of the fixture, the first lighting fixture is turned on with brightness at least substantially equal to or higher than the brightness of the dimming state of the first lighting fixture.
【０００６】請求項１記載の照明装置によれば、第２の
照明器具は点灯開始時に所定の明るさで点灯することに
より、先に点灯した第１の照明器具の光源の光の影響を
受けないので、電源系統が別の複数の照明器具の照度セ
ンサが互いに近接して設置されても、さらに夜など周囲
が暗いときに先に第１の照明器具を点灯し、次に別の近
接した第２の照明器具を点灯しても、後から点灯した第
２の照明器具が従来のように暗くならない。According to the illuminating device of the first aspect, the second lighting fixture is lit at a predetermined brightness at the start of lighting, so that the second lighting fixture is affected by the light of the light source of the first lighting fixture turned on first. Therefore, even when the illuminance sensors of a plurality of lighting devices having different power supply systems are installed close to each other, the first lighting device is first turned on when the surroundings are dark, such as at night, and then another nearby lighting device is turned on. Even if the second lighting fixture is turned on, the second lighting fixture that is turned on later does not become dark as in the related art.
【０００７】請求項２記載の照明装置は、請求項１にお
いて、前記第２の照明器具がその点灯開始時にフル点灯
するものである。請求項２記載の照明装置によれば、請
求項１と同様な効果がある。請求項３記載の照明装置
は、請求項２において、第２の照明器具が、その点灯開
始時の所定時間、第２の照明器具の前記照度センサを停
止させるものである。According to a second aspect of the present invention, in the first aspect, the second lighting apparatus is fully lit when the second lighting apparatus is turned on. According to the lighting device of the second aspect, the same effect as that of the first aspect is obtained. According to a third aspect of the present invention, in the second aspect, the second lighting apparatus stops the illuminance sensor of the second lighting apparatus for a predetermined time when the lighting is started.
【０００８】請求項３記載の照明装置によれば、照度セ
ンサが停止している間はフル点灯状態となるので、請求
項２と同様な効果のほか、点灯するときにフル点灯する
だけのため回路構成やソフトが簡単になる。請求項４記
載の照明装置は、前記複数の照明器具は前記検知信号ま
たは前記調光信号を相互にやりとり可能に接続されて、
前記第２の照明器具の電源投入時に前記第１の照明器具
と略同じ調光状態で点灯開始するものである。According to the third aspect of the present invention, the lighting device is fully lit while the illuminance sensor is stopped. The circuit configuration and software are simplified. The lighting device according to claim 4, wherein the plurality of lighting devices are connected so that the detection signal or the dimming signal can be exchanged with each other,
When the power of the second lighting apparatus is turned on, lighting is started in substantially the same dimming state as that of the first lighting apparatus.
【０００９】請求項４記載の照明装置によれば、第２の
照明器具の点灯開始時に第１の照明器具と同じ光出力が
得られるので、請求項１と同様な効果がある。According to the illumination device of the fourth aspect, the same light output as that of the first illumination device can be obtained at the start of lighting of the second illumination device.
【００１０】[0010]
【発明の実施の形態】この発明の第１の実施の形態を図
１から図３により説明する。すなわち、この照明装置
は、複数の照明器具１〜４を有する。各照明器具１〜４
は、照度センサ５と、調光装置６と、光源７とを有す
る。照度センサ５は、被照射面の照度を検知するもので
ある。実施の形態では各照明器具１〜４にそれぞれ一体
に設けられているが、別体に設ける場合もある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this lighting device has a plurality of lighting fixtures 1 to 4. Each lighting fixture 1-4
Has an illuminance sensor 5, a light control device 6, and a light source 7. The illuminance sensor 5 detects the illuminance of the surface to be illuminated. In the embodiment, each of the lighting devices 1 to 4 is provided integrally, but may be provided separately.
【００１１】調光装置６は、照度センサ５からの検知信
号により調光制御を行なうものである。実施の形態では
各照明器具１〜４に一体に設けられているが、別体に設
ける場合もある。光源７は、調光装置６からの調光信号
により調光制御される。実施の形態の光源７は直管蛍光
ランプであり、照明器具１〜４に点灯装置を設け、調光
装置６により調光制御されて光源７を点灯している。The dimming device 6 performs dimming control based on a detection signal from the illuminance sensor 5. In the embodiment, the lighting devices 1 to 4 are provided integrally, but may be provided separately. Light control of the light source 7 is controlled by a light control signal from the light control device 6. The light source 7 of the embodiment is a straight tube fluorescent lamp, and a lighting device is provided in each of the lighting fixtures 1 to 4, and the dimming control is performed by the dimming device 6 to turn on the light source 7.
【００１２】照明器具１〜４および照度センサ５は互い
に近接して設置されている。８は各照明器具１〜４に別
々に供給する電源である。先に点灯した第１の照明器具
（１〜４のいずれか単一または複数）に対して後から点
灯する第２の照明器具（残りのものまたはその一部）の
点灯開始時に、第１の照明器具の調光状態の明るさに比
べて少なくとも略同等かそれ以上に明るい状態で点灯す
る。The luminaires 1-4 and the illuminance sensor 5 are installed close to each other. A power supply 8 is separately supplied to each of the lighting fixtures 1 to 4. At the start of lighting of the second lighting fixture (the rest or a part thereof) which is turned on later with respect to the first lighting fixture (one or more of any of 1 to 4) which has been turned on first, Lighting is performed in a state that is at least substantially equal to or higher than the brightness of the dimming state of the lighting fixture.
【００１３】実施の形態では、図３に示すように、第２
の照明器具の点灯開始時に、先に点灯した第１の照明器
具に関係なくまずフル点灯するようにしている。すなわ
ち、電源投入時点で光出力は１００％となる。つぎに第
２の照明器具の照度センサ５が被照射面の照度を検知し
て被照射面が適正な照度となるように調光制御が行なわ
れる。その結果、図３の特性Ｑ1 を示し、適正な照度と
なるように調光されて光出力される。In the embodiment, as shown in FIG.
At the start of lighting of the first lighting device, full lighting is performed first regardless of the first lighting device that has been turned on first. That is, the light output becomes 100% when the power is turned on. Next, the illuminance sensor 5 of the second lighting fixture detects the illuminance of the illuminated surface, and performs dimming control so that the illuminated surface has an appropriate illuminance. As a result, show a characteristic to Q 1 3, they are dimmed so that proper illumination is the light output.
【００１４】この実施の形態によれば、第２の照明器具
は点灯開始時に所定の明るさで点灯することにより、先
に点灯した第１の照明器具の光源７の光の影響を受けな
いので、電源系統が別の複数の照明器具１〜４の照度セ
ンサ５が互いに近接して設置されても、さらに夜など周
囲が暗いときに先に第１の照明器具を点灯し、次に別の
近接した第２の照明器具を点灯しても、後から点灯した
第２の照明器具が従来のように暗くならない。According to this embodiment, the second lighting apparatus is lit at a predetermined brightness at the start of lighting, so that it is not affected by the light of the light source 7 of the first lighting apparatus which has been turned on first. Even if the illuminance sensors 5 of a plurality of lighting apparatuses 1 to 4 having different power supply systems are installed close to each other, the first lighting apparatus is first turned on when the surroundings are dark, such as at night, and then another lighting apparatus is turned on. Even if the nearby second lighting fixture is turned on, the second lighting fixture that is turned on later does not become dark as in the related art.
【００１５】この発明の第２の実施の形態を図４により
説明する。すなわち、第１の実施の形態において、第２
の照明器具の点灯開始時にまずフル点灯ではなく、第１
の照明器具に関係なく、第１の照明器具の調光状態の明
るさに比べてほぼ同等かそれ以上に明るい状態として、
フル点灯の６０％または７０％前後の低照度で点灯させ
ている。つぎに被照射面の照度を照度センサ５により検
知し、調光制御を行なわせる。この場合、特性ａは周囲
が暗い場合であり、点灯開始時よりも若干明るい光出力
に調光されている。特性ｂは周囲が明るい場合であり点
灯開始時よりも若干暗く調光している。A second embodiment of the present invention will be described with reference to FIG. That is, in the first embodiment, the second
At the start of lighting of the lighting equipment of the first, instead of full lighting,
Regardless of the lighting equipment of the first lighting equipment, as a state substantially equal to or more than the brightness of the dimming state of the first lighting equipment,
Lighting is performed at a low illuminance of about 60% or 70% of full lighting. Next, the illuminance of the surface to be illuminated is detected by the illuminance sensor 5 and dimming control is performed. In this case, the characteristic a is a case where the surroundings are dark, and the light output is adjusted to a light output slightly brighter than at the start of lighting. The characteristic b is a case where the surroundings are bright, and the dimming is slightly darker than at the start of lighting.
【００１６】この実施の形態によれば、第１の実施の形
態では、先に点灯した第１の照明器具はつぎに第２の照
明器具のフル点灯の光を検知し、暗くなろうとする。そ
こで、まず電源を投入したときに６０〜７０％の光出力
で点灯すると第１の照明器具に及ぼす影響が少なくな
る。また照明器具１〜４間の光出力のずれがなくなる。
またこの実施の形態は、第１の実施の形態に比べて光出
力がずれている時間が短い。According to this embodiment, in the first embodiment, the first lighting device which has been turned on first detects the fully lighted light of the second lighting device and tries to become darker. Therefore, when the power is first turned on and the light is turned on at a light output of 60 to 70%, the influence on the first lighting fixture is reduced. Also, there is no shift in light output between the lighting fixtures 1 to 4.
In this embodiment, the time during which the light output is shifted is shorter than in the first embodiment.
【００１７】その他は第１の実施の形態と同様である。
この発明の第３の実施の形態を図５により説明する。す
なわち、第２の実施の形態において、第２の照明器具の
点灯開始後所定時間Ｔ、例えば５〜２０秒程度、まず第
１の照明器具に関係なくフル点灯の６０％または７０％
前後の低照度で点灯させるものである。The other parts are the same as in the first embodiment.
A third embodiment of the present invention will be described with reference to FIG. That is, in the second embodiment, a predetermined time T after the lighting of the second lighting device is started, for example, about 5 to 20 seconds, and 60% or 70% of full lighting regardless of the first lighting device.
It is lit with low illuminance before and after.
【００１８】その他は第２の実施の形態と同様である。
この発明の第４の実施の形態を図６により説明する。す
なわち、第１の実施の形態において、第２の照明器具の
点灯開始時にフル点灯する代わりに、複数の照明器具１
〜４は照度センサ５の検知信号または調光装置６の調光
信号を信号線９を通して相互にやりとり可能に接続した
ものである。The other parts are the same as in the second embodiment.
A fourth embodiment of the present invention will be described with reference to FIG. That is, in the first embodiment, instead of full lighting at the start of lighting of the second lighting fixture, a plurality of lighting fixtures 1
Numerals 4 are connected such that a detection signal of the illuminance sensor 5 or a light control signal of the light control device 6 can be mutually exchanged through a signal line 9.
【００１９】第１の照明器具を先に点灯し、つぎに第２
の照明器具を点灯させたとき、第２の照明器具は第１の
照明器具の検知信号または調光信号を読み取り、まず第
１の照明器具と同じ光出力で点灯する。その後、第２の
照明器具の照度センサにより被照射面の照度を検知し、
調光制御を行なう。第２の照明器具の点灯開始時の検知
信号のやりとりの場合は、第１の照明器具の照度センサ
５による検知信号で第２の照明器具を調光できるので、
第２の照明器具は第１の照明器具と同じ光出力が得られ
る。The first lighting device is turned on first, and then the second lighting device is turned on.
When the second lighting device is turned on, the second lighting device reads the detection signal or dimming signal of the first lighting device, and first turns on with the same light output as the first lighting device. Then, the illuminance of the illuminated surface is detected by the illuminance sensor of the second lighting fixture,
Dimming control is performed. In the case of the exchange of the detection signal at the start of lighting of the second lighting device, the second lighting device can be dimmed by the detection signal from the illuminance sensor 5 of the first lighting device.
The second lighting fixture has the same light output as the first lighting fixture.
【００２０】調光装置６の調光信号のやりとりとして
は、第１の照明器具の調光状態の入力電流または入力電
力を制御する信号のほか、第１の照明器具の入力電流ま
たは入力電力がある。これらの場合第１の照明器具と第
２の照明器具で同じ光出力が得られる。したがって第２
の照明器具の電源投入時に第１の照明器具と略同じ調光
状態で点灯開始する。そのため、第１の照明器具と第２
の照明器具を同時に入れなくても均等な明るさを保つこ
とができる。The exchange of the dimming signal of the dimming device 6 includes, in addition to the signal for controlling the input current or input power in the dimming state of the first lighting fixture, the input current or input power of the first lighting fixture. is there. In these cases, the same light output is obtained with the first lighting fixture and the second lighting fixture. Therefore the second
When the power of the lighting device is turned on, the lighting device starts lighting in substantially the same dimming state as the first lighting device. Therefore, the first lighting fixture and the second
It is possible to maintain uniform brightness without having to put in any lighting equipment at the same time.
【００２１】その他は第１の実施の形態と同様である。
この発明の第５の実施の形態を図７により説明する。す
なわち、第１の実施の形態において、第２の照明器具
は、点灯開始後の所定時間Ｔ、例えば５〜２０秒程度、
第２の照明器具の照度センサ５を停止させるものであ
る。照度センサ５を停止すると調光装置６が働かないの
で、電源投入後は時間Ｔの間、第２の照明器具がフル点
灯する。その後、照度センサが働き、所定の適正な照度
となるように調光装置６を作動して、特性Ｑ1 に似た特
性Ｑ2 を示す。The other parts are the same as in the first embodiment.
A fifth embodiment of the present invention will be described with reference to FIG. In other words, in the first embodiment, the second lighting fixture has a predetermined time T after the start of lighting, for example, about 5 to 20 seconds,
This is to stop the illuminance sensor 5 of the second lighting fixture. When the illuminance sensor 5 is stopped, the light control device 6 does not operate, so that the second lighting apparatus is fully lit during the time T after the power is turned on. Thereafter, work is illuminance sensor, by operating the dimmer 6 to a predetermined proper illumination, showing a characteristic Q 2 to which similar to the characteristics Q 1.
【００２２】この実施の形態によれば、点灯するときに
はフル点灯するだけであるので、回路構成およびソフト
が簡単になる。その他は第１の実施の形態と同様であ
る。According to this embodiment, since the light is only turned on when the light is turned on, the circuit configuration and software are simplified. Others are the same as in the first embodiment.
【００２３】[0023]
【発明の効果】請求項１記載の照明装置によれば、第２
の照明器具は点灯開始時に所定の明るさで点灯すること
により、先に点灯した第１の照明器具の光源の光の影響
を受けないので、電源系統が別の複数の照明器具の照度
センサが互いに近接して設置されても、さらに夜など周
囲が暗いときに先に第１の照明器具を点灯し、次に別の
近接した第２の照明器具を点灯しても、後から点灯した
第２の照明器具が従来のように暗くならない。According to the lighting device of the first aspect, the second aspect
The lighting equipment of the first lighting equipment is turned on at a predetermined brightness at the start of lighting, so that it is not affected by the light of the light source of the first lighting equipment that has been turned on first. Even if they are installed close to each other, even when the surroundings are dark, such as at night, the first lighting device is first turned on, and then another second lighting device that is close to the second lighting device is turned on. The two lighting fixtures do not darken as before.
【００２４】請求項２記載の照明装置によれば、請求項
１と同様な効果がある。請求項３記載の照明装置によれ
ば、照度センサが停止している間はフル点灯状態となる
ので、請求項２と同様な効果のほか、点灯するときにフ
ル点灯するだけのため回路構成やソフトが簡単になる。
請求項４記載の照明装置によれば、第２の照明器具の点
灯開始時に第１の照明器具と同じ光出力が得られるの
で、請求項１と同様な効果がある。According to the illumination device of the second aspect, the same effect as that of the first aspect is obtained. According to the illuminating device of the third aspect, the illumination device is in the full lighting state while the illuminance sensor is stopped. Software becomes simple.
According to the illuminating device of the fourth aspect, the same light output as that of the first illuminating device can be obtained at the start of lighting of the second illuminating device.
【図１】この発明の第１の実施の形態の構成の説明図で
ある。FIG. 1 is an explanatory diagram of a configuration of a first embodiment of the present invention.
【図２】照明器具の斜視図である。FIG. 2 is a perspective view of a lighting fixture.
【図３】第１の実施の形態の時間に対する光出力の特性
図である。FIG. 3 is a characteristic diagram of light output with respect to time in the first embodiment.
【図４】第２の実施の形態の時間に対する光出力の特性
図である。FIG. 4 is a characteristic diagram of light output with respect to time in the second embodiment.
【図５】第３の実施の形態の時間に対する光出力の特性
図である。FIG. 5 is a characteristic diagram of light output with respect to time in the third embodiment.
【図６】第４の実施の形態の構成の説明図である。FIG. 6 is an explanatory diagram of a configuration according to a fourth embodiment.
【図７】第４の実施の形態の時間に対する光出力の特性
図である。FIG. 7 is a characteristic diagram of light output with respect to time in the fourth embodiment.
１〜４ 照明器具 ５ 照度センサ ６ 調光装置 ７ 光源 1-4 lighting equipment 5 illuminance sensor 6 dimmer 7 light source
Claims (4)
と、この照度センサからの検知信号により調光制御を行
なう調光装置と、この調光装置からの調光信号により調
光制御される光源とを備えた複数の照明器具を有する照
明装置において、先に点灯した第１の前記照明器具に対
して後から点灯する第２の前記照明器具の点灯開始時
に、前記第１の照明器具の調光状態の明るさに比べて少
なくとも略同等かそれ以上に明るい状態で点灯すること
を特徴とする照明装置。An illuminance sensor for detecting illuminance on a surface to be illuminated, a dimming device for performing dimming control based on a detection signal from the illuminance sensor, and dimming control based on a dimming signal from the dimming device. In a lighting device having a plurality of lighting fixtures provided with a light source, at the time of starting lighting of the second lighting fixture that is turned on later with respect to the first lighting fixture that has been turned on first, An illuminating device that lights in a state that is at least substantially equal to or higher than the brightness in the dimming state.
フル点灯する請求項１記載の照明装置。2. The lighting device according to claim 1, wherein the second lighting device is fully lit at the start of lighting.
の所定時間、前記第２の照明器具の前記照度センサを停
止させる請求項２記載の照明装置。3. The lighting device according to claim 2, wherein the second lighting fixture stops the illuminance sensor of the second lighting fixture for a predetermined time when the lighting is started.
は前記調光信号を相互にやりとり可能に接続されて、前
記第２の照明器具の電源投入時に前記第１の照明器具と
略同じ調光状態で点灯開始する請求項１記載の照明装
置。4. The plurality of luminaires are connected so that the detection signal or the dimming signal can be exchanged with each other, and when the power of the second luminaire is turned on, the dimming is substantially the same as that of the first luminaire. The lighting device according to claim 1, wherein lighting is started in a state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10111892A JPH11307274A (en) | 1998-04-22 | 1998-04-22 | Lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10111892A JPH11307274A (en) | 1998-04-22 | 1998-04-22 | Lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11307274A true JPH11307274A (en) | 1999-11-05 |
Family
ID=14572765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10111892A Pending JPH11307274A (en) | 1998-04-22 | 1998-04-22 | Lighting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11307274A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7120860B1 (en) | 1998-10-20 | 2006-10-10 | Fujitsu Limited | Display control apparatus and storage medium |
-
1998
- 1998-04-22 JP JP10111892A patent/JPH11307274A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7120860B1 (en) | 1998-10-20 | 2006-10-10 | Fujitsu Limited | Display control apparatus and storage medium |
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