JP4569115B2 - Lighting device - Google Patents

Lighting device Download PDF

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JP4569115B2
JP4569115B2 JP2004024745A JP2004024745A JP4569115B2 JP 4569115 B2 JP4569115 B2 JP 4569115B2 JP 2004024745 A JP2004024745 A JP 2004024745A JP 2004024745 A JP2004024745 A JP 2004024745A JP 4569115 B2 JP4569115 B2 JP 4569115B2
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led lamp
signal
dimming
lighting
unit
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JP2005216780A (en
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淳郎 七原
真二 松田
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Panasonic Corp
Panasonic Electric Works Co Ltd
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Panasonic Corp
Matsushita Electric Works Ltd
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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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  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Optical Communication System (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

本発明は、ＬＥＤランプを光源として用いて情報伝送を行うことができる照明装置に関するものである。   The present invention relates to an illumination device capable of transmitting information using an LED lamp as a light source.

従来、ＬＥＤランプを光源とする照明装置（以下、ＬＥＤ照明装置と称す）を用いた情報伝送装置が提案されている。図１７は情報伝送装置を兼用した従来のＬＥＤ照明装置１００の構成を示しており、ＬＥＤ照明装置１００は、電源部１０１と、変調回路部１０２と、ＬＥＤランプ１０３とを備える。ＬＥＤ照明装置１００の外部には送信側装置２００を設けている。ＬＥＤランプ１０３は、変調回路部１０２を介して電源部１０１から供給される電力によって点灯している。そして、送信側装置２００から送信したい情報を含む信号をＬＥＤ照明装置１００に送信すると、変調回路部１０２は、電源部１０１が出力する電力に、送信側装置２００から受信した信号に応じて変調をかけてＬＥＤランプ１０３に供給し、ＬＥＤランプ１０３を変調点灯させる。ＬＥＤランプ１０３は変調された照明光（光信号）を発し、受信側装置３００はこの光信号を受けることで、送信側装置２００からの情報を受信する。（例えば、特許文献１参照）。   Conventionally, an information transmission device using an illumination device using an LED lamp as a light source (hereinafter referred to as an LED illumination device) has been proposed. FIG. 17 shows a configuration of a conventional LED illumination device 100 that also serves as an information transmission device. The LED illumination device 100 includes a power supply unit 101, a modulation circuit unit 102, and an LED lamp 103. A transmission side device 200 is provided outside the LED lighting device 100. The LED lamp 103 is lit by power supplied from the power supply unit 101 via the modulation circuit unit 102. Then, when a signal including information to be transmitted from the transmission-side device 200 is transmitted to the LED lighting device 100, the modulation circuit unit 102 modulates the power output from the power supply unit 101 according to the signal received from the transmission-side device 200. Is supplied to the LED lamp 103 and the LED lamp 103 is modulated and lit. The LED lamp 103 emits modulated illumination light (optical signal), and the receiving side device 300 receives the optical signal, thereby receiving information from the transmitting side device 200. (For example, refer to Patent Document 1).

しかし、上記ＬＥＤ照明装置１００による情報伝送を考えた場合、ＬＥＤランプ１０３の光源としての性質、特に発光効率や指向性等の問題で、ＬＥＤランプ１０３そのものが居住空間において主照明とならない場合が多いと考えられる。あるいは、ＬＥＤランプ１０３が主照明になり得たとしても、同一空間に複数のＬＥＤ照明装置１００を置かなければならず、情報の混信や、煩雑な設定が必要になる等の課題がある。   However, when information transmission by the LED lighting device 100 is considered, the LED lamp 103 itself is often not the main lighting in the living space due to problems such as the light source of the LED lamp 103, particularly the luminous efficiency and directivity. it is conceivable that. Alternatively, even if the LED lamp 103 can be the main illumination, a plurality of LED illumination devices 100 must be placed in the same space, which causes problems such as information interference and complicated settings.

そこで、現実的な居住空間の照明を考えた場合、図１８に示すようにＬＥＤ照明装置１００を補助照明として用い、ＬＥＤ照明装置１００とは別に蛍光ランプ等を用いた主照明装置１１０が設置される可能性が高くなる。
特開２００２−２９０３３５号公報（段落番号［０００７］〜［００１１］、図１、図２） Therefore, when considering lighting in a realistic living space, as shown in FIG. 18, the LED lighting device 100 is used as auxiliary lighting, and a main lighting device 110 using a fluorescent lamp or the like is installed separately from the LED lighting device 100. Is more likely.
Japanese Patent Laid-Open No. 2002-290335 (paragraph numbers [0007] to [0011], FIGS. 1 and 2)

上記のようにＬＥＤ照明装置１００を補助照明として用い、ＬＥＤ照明装置１００とは別に蛍光ランプ等を用いた主照明装置１１０を設置した場合の居住空間における床面照度分布を図１８に示す。主照明装置１１０は照度分布Ｙ１１０（実線）を有しており、一般的に装置直下をピークとした配光で、その指向性は広いものとなる。対して、ＬＥＤ照明装置１００は照度分布Ｙ１００（一点鎖線）を有しており、指向性が強く、発光効率等の問題から蛍光灯に比べて光束が低くなる。したがって、ＬＥＤ照明装置１００近傍の床面照度においては、ＬＥＤ照明装置１００による照度の割合は低くなる。この状態は、受信側装置３００において、主照明装置１１０が発する変調がかかっていない光成分はノイズ源となり、情報伝送のＳ／Ｎ比が低くなって伝送性能に影響を及ぼす。また、主照明装置１１０の光源が蛍光灯であり、且つＬＥＤ照明装置１００が発する光色が白色の場合は、ＬＥＤ照明装置１００が発する光信号に蛍光灯の照射光が干渉して、受信側装置３００では光信号を認識することが難しくなる。なお、照度分布Ｙ１００’（実線）は、照度分布Ｙ１００を照度分布Ｙ１１０に重畳させた場合を示している。   FIG. 18 shows a floor illuminance distribution in the living space when the LED lighting device 100 is used as auxiliary lighting as described above and the main lighting device 110 using a fluorescent lamp or the like is installed separately from the LED lighting device 100. The main illumination device 110 has an illuminance distribution Y110 (solid line), and generally has a light distribution with a peak directly below the device, and the directivity is wide. On the other hand, the LED lighting device 100 has an illuminance distribution Y100 (one-dot chain line), has high directivity, and has a lower luminous flux than a fluorescent lamp due to problems such as light emission efficiency. Therefore, in the floor surface illuminance near the LED lighting device 100, the ratio of the illuminance by the LED lighting device 100 is low. In this state, in the receiving-side apparatus 300, the light component that is not modulated by the main lighting apparatus 110 becomes a noise source, and the S / N ratio of information transmission is lowered, affecting the transmission performance. Further, when the light source of the main illumination device 110 is a fluorescent lamp and the light color emitted from the LED illumination device 100 is white, the irradiation light of the fluorescent lamp interferes with the light signal emitted from the LED illumination device 100, and the reception side In the apparatus 300, it becomes difficult to recognize an optical signal. The illuminance distribution Y100 ′ (solid line) indicates a case where the illuminance distribution Y100 is superimposed on the illuminance distribution Y110.

そこで、情報伝送時には主照明装置１１０をユーザが操作することにより、主照明装置１１０を調光あるいは消灯する場合があるが、情報伝送時毎に主照明装置１１０を操作するには手間がかかり、また自動的に情報伝送する場合には有効ではない。   Therefore, there is a case where the user operates the main lighting device 110 during information transmission, thereby dimming or turning off the main lighting device 110. However, it takes time and effort to operate the main lighting device 110 every time information is transmitted. Also, it is not effective when information is automatically transmitted.

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、ＬＥＤランプによる照明手段とは別に照明手段を備えるとともに、ＬＥＤランプが発する光信号を用いて確実に情報伝送を行うことができる照明装置を提供することにある。   The present invention has been made in view of the above-mentioned reasons, and its object is to provide illumination means separately from illumination means by LED lamps and to reliably transmit information using an optical signal emitted from the LED lamps. It is in providing the illuminating device which can be performed.

請求項１の発明は、第１の照明手段と、ＬＥＤランプを光源として用いた第２の照明手段と、前記ＬＥＤランプの発光による光信号を外部に送信する光信号送信手段とを備えて、前記第１の照明手段の照射範囲と前記第２の照明手段の照射範囲とが互いに重なる共通の照射範囲があり、前記光信号送信手段が光信号を送信していないとき、前記第１の照明手段を第１の調光レベルで点灯させるとともに、前記第２の照明手段を第２の調光レベルで点灯させ、前記光信号送信手段が光信号を送信しているとき、前記第１の照明手段を第１、第２の調光レベルより低い第３の調光レベルで点灯させるとともに、前記第２の照明手段を第２の調光レベルで点灯させ、光信号送信後は光信号送信前の調光レベルに戻す照明制御手段を設けたことを特徴とする。 The invention of claim 1 includes first illumination means, second illumination means using an LED lamp as a light source, and optical signal transmission means for transmitting an optical signal generated by light emission of the LED lamp to the outside. When there is a common irradiation range in which the irradiation range of the first illumination unit and the irradiation range of the second illumination unit overlap each other, and the optical signal transmission unit does not transmit an optical signal, the first illumination with lighting the unit at a first dimming level, the second illumination means is turned in the second dimming level, when the optical signal transmitter is transmitting an optical signal, said first illumination The means is lit at a third dimming level lower than the first and second dimming levels, and the second illuminating means is lit at the second dimming level, and after transmitting the optical signal, before transmitting the optical signal. Features lighting control means to return to the dimming level To.

この発明によれば、ＬＥＤランプが発する光信号を用いた情報伝送時に、ＬＥＤランプの光出力が第１の照明手段の光出力に対して相対的に大きくなる方向へ制御されるので、ＬＥＤランプの照射エリアでは、ＬＥＤランプによる照度の割合が高くなる。したがって、情報伝送のＳ／Ｎ比が高くなり、ＬＥＤランプが発する光信号を用いる情報伝送の確実性を高めることが可能となる。 According to the present invention, since the light output of the LED lamp is controlled to be relatively large with respect to the light output of the first illuminating means at the time of information transmission using the light signal emitted from the LED lamp, the LED lamp In the irradiation area, the ratio of illuminance by the LED lamp is high. Accordingly, the S / N ratio of information transmission is increased, and the reliability of information transmission using the optical signal emitted from the LED lamp can be increased .

以上説明したように、本発明では、ＬＥＤランプが発する光信号を用いた情報伝送時に、ＬＥＤランプの光出力が第１の照明手段の光出力に対して相対的に大きくなる方向へ制御されるので、ＬＥＤランプの照射エリアでは、ＬＥＤランプによる照度の割合が高くなる。したがって、情報伝送のＳ／Ｎ比が高くなり、ＬＥＤランプが発する光信号を用いる情報伝送の確実性を高めることが可能となるという効果がある。 As described above, in the present invention, the light output of the LED lamp is controlled to be relatively large with respect to the light output of the first illuminating means at the time of information transmission using the light signal emitted from the LED lamp. Therefore, in the irradiation area of the LED lamp, the ratio of the illuminance by the LED lamp becomes high. Therefore, there is an effect that the S / N ratio of information transmission is increased and the reliability of information transmission using the optical signal emitted from the LED lamp can be increased .

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施形態１）
図１は本実施形態の照明装置１のブロック構成、および照明装置１を用いた情報伝送装置のシステム構成を示しており、照明装置１は、電源部２と、制御部３と、記憶部４と、変調回路部５と、可視光を発するＬＥＤランプ６と、調光点灯回路部７と、蛍光ランプ８と、赤外信号受信部９とを備え、照明装置１の外部には、送信側装置２００と、受信側装置３００とを設けている。電源部２は、商用電源ＡＣから供給される電力を各部の動作電源およびＬＥＤランプ６の点灯電力に変換する。制御部３は、変調回路部５を介してＬＥＤランプ６に点灯電力を供給するとともにＬＥＤランプ６の点灯状態を制御し、さらに調光点灯回路部７を介して蛍光ランプ８の点灯状態を制御する。変調回路部５は、制御部３が出力するシリアル通信信号Ｓ２に応じてＬＥＤランプ６へ供給する点灯電力に変調をかける。調光点灯回路部７は、商用電源ＡＣからの電力を蛍光ランプ８へ供給するとともに制御部３が出力する調光信号Ｓ１に応じて蛍光ランプ８を調光する。記憶部４は、照明装置１の器具情報や位置情報等を記憶しており、赤外信号受信部９は、送信側装置２００からの信号を受信して制御部３へ伝達する。なお、図１ではＬＥＤランプ６と蛍光ランプ８とを各々１つ記載しているが、各々を複数備えていてもよい。 (Embodiment 1)
FIG. 1 shows a block configuration of a lighting device 1 according to the present embodiment and a system configuration of an information transmission device using the lighting device 1. The lighting device 1 includes a power supply unit 2, a control unit 3, and a storage unit 4. A modulation circuit unit 5, an LED lamp 6 that emits visible light, a dimming / lighting circuit unit 7, a fluorescent lamp 8, and an infrared signal reception unit 9. An apparatus 200 and a receiving apparatus 300 are provided. The power supply unit 2 converts power supplied from the commercial power supply AC into operation power for each unit and lighting power for the LED lamp 6. The control unit 3 supplies lighting power to the LED lamp 6 through the modulation circuit unit 5 and controls the lighting state of the LED lamp 6, and further controls the lighting state of the fluorescent lamp 8 through the dimming lighting circuit unit 7. To do. The modulation circuit unit 5 modulates the lighting power supplied to the LED lamp 6 in accordance with the serial communication signal S2 output from the control unit 3. The dimming / lighting circuit unit 7 supplies electric power from the commercial power supply AC to the fluorescent lamp 8 and adjusts the fluorescent lamp 8 in accordance with the dimming signal S1 output from the control unit 3. The storage unit 4 stores appliance information, position information, and the like of the lighting device 1, and the infrared signal reception unit 9 receives a signal from the transmission side device 200 and transmits it to the control unit 3. In FIG. 1, one LED lamp 6 and one fluorescent lamp 8 are shown, but a plurality of each may be provided.

そして本実施形態では図２に示すように、密集して配置された複数のＬＥＤランプ６と、並設された２本の蛍光ランプ８とが同一の器具本体１０の下面に設けられており、蛍光ランプ８は主照明部１ａを構成し、ＬＥＤランプ６は補助照明部１ｂを構成している。図３は蛍光ランプ８の照射エリアＡａと、ＬＥＤランプ６の照射エリアＡｂとを示しており、略楕円形の照射エリアＡａの長径方向の端部に略円形の照射エリアＡｂが位置し、照射エリアＡｂが照射エリアＡａに重なる。これは、照明用の光源として考えた場合、蛍光ランプ８の照度分布は最低限必要な照度分布に設定される傾向があり、ＬＥＤランプ６が細かい作業等を行う際の補助照明の役割を担うためである。   And in this embodiment, as shown in FIG. 2, the several LED lamp 6 arranged closely and the two fluorescent lamps 8 arranged in parallel are provided in the lower surface of the same instrument main body 10, The fluorescent lamp 8 constitutes the main illumination part 1a, and the LED lamp 6 constitutes the auxiliary illumination part 1b. FIG. 3 shows an irradiation area Aa of the fluorescent lamp 8 and an irradiation area Ab of the LED lamp 6, and a substantially circular irradiation area Ab is located at the end in the major axis direction of the substantially elliptical irradiation area Aa. Area Ab overlaps irradiation area Aa. When this is considered as a light source for illumination, the illuminance distribution of the fluorescent lamp 8 tends to be set to a minimum necessary illuminance distribution, and plays a role of auxiliary illumination when the LED lamp 6 performs fine work or the like. Because.

以下、照明装置１の動作について図４（ａ）〜（ｄ）を用いて説明する。まず通常時（受信側装置３００への情報未送信時）、制御部３は、赤外信号受信部９が送信側装置２００から受信した調光レベル指示信号に応じて調光信号Ｓ１（１ＫＨｚのＰＷＭ信号）を生成し、調光点灯回路部７へ出力する（図４（ａ）参照）。調光点灯回路部７は調光信号Ｓ１のオンデューティが増加するほど蛍光ランプ８の調光レベルを低下させる（図４（ｂ）参照）。このようにして蛍光ランプ８は指示された調光レベルで点灯することになる。   Hereinafter, operation | movement of the illuminating device 1 is demonstrated using Fig.4 (a)-(d). First, at normal time (when information is not transmitted to the receiving device 300), the control unit 3 controls the dimming signal S1 (1 KHz) according to the dimming level instruction signal received by the infrared signal receiving unit 9 from the transmitting device 200. PWM signal) is generated and output to the dimming / lighting circuit unit 7 (see FIG. 4A). The dimming / lighting circuit unit 7 decreases the dimming level of the fluorescent lamp 8 as the on-duty of the dimming signal S1 increases (see FIG. 4B). In this way, the fluorescent lamp 8 is lit at the instructed dimming level.

また通常時において、制御部３はシリアル通信信号Ｓ２を出力せず（図４（ｃ）参照）、変調回路部５は一定周波数の変調信号を生成して、ＬＥＤランプ６を一定周波数で点灯させる（図４（ｄ）参照）。このときＬＥＤランプ６は調光点灯状態になり、後述する受信側装置３００への情報送信時に、ＬＥＤランプ６の調光レベルが大きく変化することを防止している。   Further, in a normal time, the control unit 3 does not output the serial communication signal S2 (see FIG. 4C), and the modulation circuit unit 5 generates a modulation signal having a constant frequency and lights the LED lamp 6 at a constant frequency. (Refer FIG.4 (d)). At this time, the LED lamp 6 is in the dimming lighting state, and the dimming level of the LED lamp 6 is prevented from changing greatly when information is transmitted to the receiving side device 300 described later.

次に照明装置１から受信側装置３００への情報送信時の照明装置１の動作について説明する。まず、赤外信号受信部９が送信側装置２００から情報送信要求信号を受信すると、制御部３は、予め記憶部９に格納してある照明装置１の器具情報や位置情報等を読み出し、読み出した情報をシリアル通信信号Ｓ２に変換して変調回路部５へ出力し（図４（ｃ）参照）、変調回路部５は、シリアル通信信号Ｓ２に応じて変調信号を生成する（図４（ｄ）参照）。図５（ａ），（ｂ）は、図４（ｃ），（ｄ）の区間Ｔの拡大図であり、シリアル通信信号Ｓ２は、「０」状態のスタートビットＢａと、８ビットのデータと、「０」状態のストップビットＢｂとで構成され、変調信号は、シリアル通信信号Ｓ２の状態が「１」の場合と「０」の場合とでは互いに異なる周波数で変調をかけて生成される。シリアル通信信号Ｓ２の状態が「１」の時の変調周波数は、シリアル通信信号Ｓ２の状態が「０」の時の変調周波数よりも高く設定されており、変調回路部５は、この変調信号に応じてＬＥＤランプ６へ供給する電力に変調をかけ、ＬＥＤランプ６を変調点灯させる。そして、ＬＥＤランプ６は変調された照明光（光信号）を発し、受信側装置３００はこの光信号を受けることで、器具情報や位置情報等を受信する。このとき、ＬＥＤランプ６は結果として調光点灯状態になるが、この調光レベルが上記通常時におけるＬＥＤランプ６の調光レベルと同レベルであることが望ましい。   Next, the operation of the lighting device 1 when information is transmitted from the lighting device 1 to the receiving-side device 300 will be described. First, when the infrared signal receiving unit 9 receives an information transmission request signal from the transmission-side device 200, the control unit 3 reads out and reads out the appliance information, position information, and the like of the lighting device 1 stored in advance in the storage unit 9. The information is converted into a serial communication signal S2 and output to the modulation circuit unit 5 (see FIG. 4C), and the modulation circuit unit 5 generates a modulation signal in accordance with the serial communication signal S2 (FIG. 4D). )reference). FIGS. 5A and 5B are enlarged views of the section T in FIGS. 4C and 4D. The serial communication signal S2 includes a start bit Ba in the “0” state, 8-bit data, , The stop signal Bb in the “0” state, and the modulation signal is generated by modulating at different frequencies when the state of the serial communication signal S2 is “1” and “0”. The modulation frequency when the state of the serial communication signal S2 is “1” is set higher than the modulation frequency when the state of the serial communication signal S2 is “0”, and the modulation circuit unit 5 In response, the power supplied to the LED lamp 6 is modulated, and the LED lamp 6 is modulated and lit. The LED lamp 6 emits modulated illumination light (optical signal), and the receiving-side apparatus 300 receives the optical signal, thereby receiving instrument information, position information, and the like. At this time, although the LED lamp 6 is in the dimming lighting state as a result, it is desirable that the dimming level is the same as the dimming level of the LED lamp 6 in the normal time.

そして、制御部３は、変調回路部５へシリアル通信信号Ｓ２を出力している期間において、調光点灯回路部７へ出力する調光信号Ｓ１のオンデューティを増加させ（図４（ａ）参照）、蛍光ランプ８の調光レベルを低下させている（図４（ｂ）参照）。この低下した蛍光ランプ８の調光レベルは、ＬＥＤランプ６の調光レベルより低くなるように設定することが望ましい。なお、受信側装置３００への情報送信時の動作については上記以外にも、情報送信時にはＬＥＤランプ６の調光レベルを上昇させる制御、またはＬＥＤランプ６の調光レベルを上昇させ且つ蛍光ランプ８の調光レベルを低下させる制御を行ってもよく、あるいは受信側装置３００の受信状態次第で、蛍光ランプ８の調光レベルを上下させるフィードバック制御を行ってもよい。すなわち、ＬＥＤランプ６を変調点灯させて光信号を送信している間、ＬＥＤランプ６の調光レベルが蛍光ランプ８の調光レベルに対して相対的に大きくなる方向へ制御できればよい。   And the control part 3 increases the on-duty of the light control signal S1 output to the light control lighting circuit part 7 in the period which is outputting the serial communication signal S2 to the modulation circuit part 5 (refer Fig.4 (a)). ), The dimming level of the fluorescent lamp 8 is lowered (see FIG. 4B). The lowered dimming level of the fluorescent lamp 8 is desirably set to be lower than the dimming level of the LED lamp 6. In addition to the operations described above, the operation at the time of transmitting information to the receiving-side apparatus 300 is controlled to increase the dimming level of the LED lamp 6 or to increase the dimming level of the LED lamp 6 and transmit the fluorescent lamp 8 at the time of information transmission. The dimming level of the fluorescent lamp 8 may be increased or decreased depending on the reception state of the receiving-side apparatus 300. That is, it is only necessary to control the dimming level of the LED lamp 6 to be relatively higher than the dimming level of the fluorescent lamp 8 while the LED lamp 6 is modulated and lit to transmit an optical signal.

次に照明装置１から受信側装置３００への情報送信が終了すると、制御部３は、蛍光ランプ８が情報送信前の調光レベルとなるように調光信号Ｓ１を調光点灯回路部７へ出力して（図４（ａ）参照）、調光点灯回路部７は蛍光ランプ８を情報送信前の調光レベルで点灯させる（図４（ｂ）参照）。また、制御部３はシリアル通信信号Ｓ２を出力せず（図４（ｃ）参照）、変調回路部５は情報送信前と同様に一定の周波数でＬＥＤランプ６を点灯させる（図４（ｄ）参照）。   Next, when the information transmission from the lighting device 1 to the receiving side device 300 is completed, the control unit 3 sends the dimming signal S1 to the dimming lighting circuit unit 7 so that the fluorescent lamp 8 becomes the dimming level before the information transmission. After output (see FIG. 4 (a)), the dimming / lighting circuit unit 7 lights the fluorescent lamp 8 at the dimming level before information transmission (see FIG. 4 (b)). Further, the control unit 3 does not output the serial communication signal S2 (see FIG. 4C), and the modulation circuit unit 5 lights the LED lamp 6 at a constant frequency as before information transmission (FIG. 4D). reference).

図６は上記制御を行った場合の床面照度の変化を示すもので、蛍光ランプ８は通常時において、装置直下をピークとした配光で、広い指向性の照度分布Ｙａ１（一点鎖線）を有しており、ＬＥＤランプ６近傍においては、指向性が強いＬＥＤランプ６の照度分布Ｙｂ（一点鎖線）より大きな床面照度となる。しかし、ＬＥＤランプ６が発する光信号を用いて照明装置１から受信側装置３００へ情報を送信する時には、蛍光ランプ８の調光レベルが自動的に低下し、蛍光ランプ８の照度分布は床面照度が低下した照度分布Ｙａ２（実線）となるので、ＬＥＤランプ６近傍において、蛍光ランプ８の床面照度は低下し、ＬＥＤランプ６による照度の割合が高くなる。したがって、情報伝送のＳ／Ｎ比を高くして情報伝送の確実性を高めることが可能となる。なお、照度分布Ｙｂ’は、照度分布Ｙｂを照度分布Ｙａ２に重畳させた場合を示している。   FIG. 6 shows a change in floor illuminance when the above control is performed. In a normal state, the fluorescent lamp 8 has a light distribution with a peak directly under the apparatus and a wide directional illuminance distribution Ya1 (dashed line). In the vicinity of the LED lamp 6, the floor surface illuminance is larger than the illuminance distribution Yb (dashed line) of the LED lamp 6 having high directivity. However, when information is transmitted from the lighting device 1 to the receiving-side device 300 using the light signal emitted from the LED lamp 6, the dimming level of the fluorescent lamp 8 is automatically lowered, and the illuminance distribution of the fluorescent lamp 8 is the floor surface. Since the illuminance distribution Ya2 (solid line) is reduced, the illuminance on the floor surface of the fluorescent lamp 8 is reduced in the vicinity of the LED lamp 6, and the illuminance ratio of the LED lamp 6 is increased. Therefore, the S / N ratio of information transmission can be increased to increase the reliability of information transmission. The illuminance distribution Yb 'indicates a case where the illuminance distribution Yb is superimposed on the illuminance distribution Ya2.

（参考例１）
図７は本参考例の照明装置１のブロック構成を示しており、変調回路部５に暖色系ＬＥＤランプ６０を接続し、調光点灯回路部７に白色系蛍光ランプ８０を接続し、さらに調光回路部１０と白色系ＬＥＤランプ６１とを備えた点が実施形態１と異なり、実施形態１と同様の構成には同一の符号を付して説明は省略する。 ( Reference Example 1 )
FIG. 7 shows a block configuration of the illumination device 1 of the present reference example , in which a warm color LED lamp 60 is connected to the modulation circuit unit 5, a white fluorescent lamp 80 is connected to the dimming lighting circuit unit 7, and further adjustment. The point provided with the optical circuit unit 10 and the white LED lamp 61 is different from the first embodiment, and the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

調光回路部１０は、制御部３が出力する調光信号Ｓ３に応じて、制御部３から供給される点灯電力を制御して白色系ＬＥＤランプ６１を調光するもので、調光信号Ｓ３のオンデューティが減少するほど白色系ＬＥＤランプ６１の調光レベルを低下させる。   The dimming circuit unit 10 controls the lighting power supplied from the control unit 3 according to the dimming signal S3 output from the control unit 3 to dimm the white LED lamp 61. The dimming signal S3 As the on-duty decreases, the dimming level of the white LED lamp 61 is lowered.

そして本参考例では図８に示すように、密集して配置された複数の暖色系ＬＥＤランプ６０および白色系ＬＥＤランプ６１と、並設された２本の白色系蛍光ランプ８０とが同一の器具本体１０の下面に設けられており、白色系蛍光ランプ８０は主照明部１ａを構成し、暖色系ＬＥＤランプ６０および白色系ＬＥＤランプ６１は補助照明部１ｂを構成している。図９は白色系蛍光ランプ８０の照射エリアＡａと、暖色系ＬＥＤランプ６０および白色系ＬＥＤランプ６１の照射エリアＡｂとを示しており、実施形態１と同様に略楕円形の照射エリアＡａの長径方向の端部に略円形の照射エリアＡｂが位置し、照射エリアＡｂが照射エリアＡａに重なる。 In this reference example , as shown in FIG. 8, a plurality of warm color LED lamps 60 and white LED lamps 61 arranged in a dense manner and two white fluorescent lamps 80 arranged in parallel are the same instrument. The white fluorescent lamp 80 constitutes the main illumination unit 1a, and the warm color LED lamp 60 and the white LED lamp 61 constitute the auxiliary illumination unit 1b. FIG. 9 shows the irradiation area Aa of the white fluorescent lamp 80 and the irradiation area Ab of the warm color LED lamp 60 and the white LED lamp 61. The major axis of the substantially elliptical irradiation area Aa as in the first embodiment. A substantially circular irradiation area Ab is located at the end of the direction, and the irradiation area Ab overlaps the irradiation area Aa.

以下、照明装置１の動作について図１０（ａ）〜（ｇ）を用いて説明する。まず通常時（受信側装置３００への情報未送信時）、制御部３は、赤外信号受信部９が送信側装置２００から受信した調光レベル指示信号に応じて調光信号Ｓ１を生成し、調光点灯回路部７へ出力する（図１０（ａ）参照）。そして白色系蛍光ランプ８０は指示された調光レベルで点灯する（図１０（ｂ）参照）。なお、白色系蛍光ランプ８０の調光レベルは後述する照明装置１から受信側装置３００への情報送信時および情報送信後においても同一レベルとなる。   Hereinafter, operation | movement of the illuminating device 1 is demonstrated using Fig.10 (a)-(g). First, at normal time (when information is not transmitted to the reception-side device 300), the control unit 3 generates a dimming signal S1 according to the dimming level instruction signal received by the infrared signal reception unit 9 from the transmission-side device 200. And output to the dimming / lighting circuit section 7 (see FIG. 10A). Then, the white fluorescent lamp 80 is lit at the instructed dimming level (see FIG. 10B). The dimming level of the white fluorescent lamp 80 is the same level during and after information transmission from the lighting device 1 to the receiving side device 300 described later.

また通常時においては、制御部３は一定の調光信号Ｓ３を出力して（図１０（ｃ）参照）、調光回路部１０は白色系ＬＥＤランプ６１を一定の調光レベルで点灯させる（図１０（ｄ）参照）。このとき白色系ＬＥＤランプ６１の調光レベルは、後述する受信側装置３００への情報送信時における暖色系ＬＥＤランプ６０の調光レベルと略同レベルとする。   Further, in a normal time, the control unit 3 outputs a constant dimming signal S3 (see FIG. 10C), and the dimming circuit unit 10 turns on the white LED lamp 61 at a constant dimming level ( (Refer FIG.10 (d)). At this time, the dimming level of the white LED lamp 61 is set to be substantially the same as the dimming level of the warm color LED lamp 60 at the time of information transmission to the receiving side device 300 described later.

さらに通常時においては、制御部３はシリアル通信信号Ｓ２を出力せず（図１０（ｆ）参照）、変調回路部５も変調信号を出力せず（図１０（ｇ）参照）、暖色系ＬＥＤランプ６０を消灯状態とする（図１０（ｅ）参照）。このように白色系ＬＥＤランプ６１を点灯させ、暖色系ＬＥＤランプ６０を消灯させるのは、受信側装置３００へ情報送信を行わない通常時に照明装置１を一般の照明用途で用いる場合、補助照明部１ｂに求められることは主照明部１ａの照度不足分の補助であるため、通常時は主照明部１ａと補助照明部１ｂとは互いに異なる光色や色温度でないほうが望ましいためである。   Further, in normal times, the control unit 3 does not output the serial communication signal S2 (see FIG. 10 (f)), the modulation circuit unit 5 also does not output the modulation signal (see FIG. 10 (g)), and the warm color LED The lamp 60 is turned off (see FIG. 10E). The white LED lamp 61 is turned on and the warm color LED lamp 60 is turned off in this manner when the lighting device 1 is used for general lighting applications when information is not transmitted to the receiving side device 300. What is required for 1b is that the main illumination unit 1a is subsidized for lack of illuminance. Therefore, it is desirable that the main illumination unit 1a and the auxiliary illumination unit 1b should not have different light colors or color temperatures in normal times.

次に照明装置１から受信側装置３００への情報送信時の照明装置１の動作について説明する。まず、赤外信号受信部９が送信側装置２００から情報送信要求信号を受信すると、制御部３は、予め記憶部９に格納してある照明装置１の器具情報や位置情報等を読み出し、読み出した情報をシリアル通信信号Ｓ２に変換して変調回路部５へ出力し（図１０（ｆ）参照）、変調回路部５は、シリアル通信信号Ｓ２に応じて変調信号を生成する（図１０（ｇ）参照）。図１０（ｆ），（ｇ）の区間Ｔの拡大図は実施形態１と同様に図５（ａ），（ｂ）に示され、変調回路部５は、この変調信号に応じて暖色系ＬＥＤランプ６０へ供給する電力に変調をかけ、暖色系ＬＥＤランプ６０を変調点灯させる。そして、暖色系ＬＥＤランプ６０は変調された照明光（光信号）を発し、受信側装置３００はこの光信号を受けることで、器具情報や位置情報等を受信する。このとき、暖色系ＬＥＤランプ６０は結果として調光点灯状態になるが（図１０（ｅ）参照）、この調光レベルが上記通常時における白色系ＬＥＤランプ６１の調光レベルと同レベルであることが望ましい。   Next, the operation of the lighting device 1 when information is transmitted from the lighting device 1 to the receiving-side device 300 will be described. First, when the infrared signal receiving unit 9 receives an information transmission request signal from the transmission-side device 200, the control unit 3 reads out and reads out the appliance information, position information, and the like of the lighting device 1 stored in advance in the storage unit 9. The converted information is converted into a serial communication signal S2 and output to the modulation circuit unit 5 (see FIG. 10F), and the modulation circuit unit 5 generates a modulation signal in accordance with the serial communication signal S2 (FIG. 10 (g) )reference). Enlarged views of the section T in FIGS. 10 (f) and (g) are shown in FIGS. 5 (a) and 5 (b) as in the first embodiment, and the modulation circuit unit 5 responds to this modulation signal with a warm color LED. The electric power supplied to the lamp 60 is modulated, and the warm color LED lamp 60 is modulated and lit. Then, the warm color LED lamp 60 emits modulated illumination light (light signal), and the receiving side device 300 receives the light signal, thereby receiving instrument information, position information, and the like. At this time, although the warm color LED lamp 60 is in the dimming lighting state as a result (see FIG. 10E), this dimming level is the same as the dimming level of the white LED lamp 61 in the normal state. It is desirable.

そして、制御部３は、変調回路部５へシリアル通信信号Ｓ２を出力している期間において、調光回路部１０へ出力する調光信号Ｓ３をオンデューティ０％として（図１０（ｃ）参照）、白色系ＬＥＤランプ６１を消灯させている（図１０（ｄ）参照）。したがって、通常時と受信側装置３００への情報送信時とで、補助照明部１ｂの照度レベル変化は抑えられ、通常時と受信側装置３００への情報送信時とで、補助照明部１ｂの光色のみを変化させることが可能となる。あるいは、暖色系ＬＥＤランプ６０と白色系ＬＥＤランプ６１との各調光レベルの合計レベルが、通常時と受信側装置３００への情報送信時とで同一となるように変化させてもよい。   Then, the control unit 3 sets the dimming signal S3 output to the dimming circuit unit 10 to 0% on-duty during the period in which the serial communication signal S2 is output to the modulation circuit unit 5 (see FIG. 10C). The white LED lamp 61 is turned off (see FIG. 10D). Therefore, the change in the illuminance level of the auxiliary illumination unit 1b is suppressed between the normal time and the information transmission time to the reception side device 300, and the light of the auxiliary illumination unit 1b is reduced between the normal time and the information transmission time to the reception side device 300. Only the color can be changed. Alternatively, the total dimming level of the warm color LED lamp 60 and the white LED lamp 61 may be changed to be the same between the normal time and the information transmission time to the receiving side device 300.

なお、受信側装置３００への情報送信時の動作については上記以外にも、ＬＥＤランプの組合せとしてＲＧＢの３原色のＬＥＤランプを用いて光色を変化させる制御を行ってもよく、あるいは光色が異なる複数の蛍光ランプを用いて光色を変化させる制御を行ってもよい。すなわち、ＬＥＤランプを変調点灯させて光信号を送信している間、ＬＥＤランプと蛍光ランプとのうち少なくともいずれか一方の光色に変化が生じるように制御できればよい。   In addition to the above, the operation at the time of transmitting information to the receiving-side apparatus 300 may be controlled to change the light color using LED lamps of the three primary colors RGB as a combination of LED lamps, or the light color Control of changing the light color may be performed using a plurality of fluorescent lamps having different values. That is, it is only necessary to be able to control the light color of at least one of the LED lamp and the fluorescent lamp to change while the LED lamp is modulated and lit and an optical signal is transmitted.

次に照明装置１から受信側装置３００への情報送信が終了すると、制御部３は、白色系ＬＥＤランプ６１が情報送信前の調光レベルとなるように調光信号Ｓ３を調光点灯回路部７へ出力して（図１０（ｃ）参照）、調光点灯回路部７は白色系ＬＥＤランプ６１を情報送信前の調光レベルで点灯させる（図１０（ｄ）参照）。また、制御部３は情報送信前と同様にシリアル通信信号Ｓ２を出力せず（図１０（ｆ）参照）、変調回路部５も変調信号を出力せず（図１０（ｇ）参照）、暖色系ＬＥＤランプ６０を消灯させる（図１０（ｅ）参照）。   Next, when the information transmission from the lighting device 1 to the receiving-side device 300 is completed, the control unit 3 supplies the dimming signal S3 to the dimming lighting circuit unit so that the white LED lamp 61 has a dimming level before the information transmission. 7 (see FIG. 10C), the dimming / lighting circuit unit 7 lights the white LED lamp 61 at the dimming level before information transmission (see FIG. 10D). Further, the control unit 3 does not output the serial communication signal S2 (see FIG. 10 (f)), and the modulation circuit unit 5 does not output the modulation signal (see FIG. 10 (g)) as before the information transmission. The system LED lamp 60 is turned off (see FIG. 10E).

したがって、照明装置１から受信側装置３００へ情報を送信する時には、主照明部１ａの光色や色温度と光信号を発する補助照明部１ｂの光色や色温度とに差をもたせることができ、受信側装置３００にフィルタ等の分光手段を設けて情報伝送の確実性を高めることが可能となる。また、通常時に主照明部１ａと補助照明部１ｂとの光色や色温度を同一にしながら、情報送信時には補助照明部１ｂの光色や色温度が変化するので、光信号の受信可能位置を確認することが容易になる。   Therefore, when information is transmitted from the lighting device 1 to the receiving-side device 300, it is possible to make a difference between the light color and color temperature of the main lighting unit 1a and the light color and color temperature of the auxiliary lighting unit 1b that emits an optical signal. In addition, it is possible to increase the certainty of information transmission by providing the receiving device 300 with a spectroscopic means such as a filter. In addition, the light color and color temperature of the auxiliary illumination unit 1b change at the time of information transmission while the light color and color temperature of the main illumination unit 1a and the auxiliary illumination unit 1b are made the same at the normal time. It becomes easy to confirm.

（参考例２）
図１１は本参考例の照明装置１のブロック構成を示しており、モータ駆動部１１とモータ１２とで構成されるＬＥＤ可動部１３を備えた点が実施形態１と異なり、実施形態１と同様の構成には同一の符号を付して説明は省略する。 ( Reference Example 2 )
FIG. 11 shows a block configuration of the illumination device 1 of the present reference example , which is different from the first embodiment in that an LED movable unit 13 including a motor driving unit 11 and a motor 12 is provided. The same reference numerals are given to the configurations of and the description is omitted.

ＬＥＤランプ６は図１２に示すようにＬＥＤ可動部１３の下面に設けられ、制御回路３からのモータ駆動信号Ｓ４に応じてモータ駆動部１１がモータ１２を回転させることで、ＬＥＤ可動部１３が揺動して、ＬＥＤランプ６は照射方向が変化し、図１３に示すように、ＬＥＤランプ６の照射エリアＡｂは例えばＸ１，Ｘ２方向へ移動する。   As shown in FIG. 12, the LED lamp 6 is provided on the lower surface of the LED movable portion 13, and the motor drive portion 11 rotates the motor 12 according to the motor drive signal S <b> 4 from the control circuit 3. By swinging, the irradiation direction of the LED lamp 6 changes, and as shown in FIG. 13, the irradiation area Ab of the LED lamp 6 moves in the X1 and X2 directions, for example.

以下、照明装置１の動作について図１４（ａ）〜（ｄ）を用いて説明する。まず通常時（受信側装置３００への情報未送信時）、制御部３は、赤外信号受信部９が送信側装置２００から受信した調光レベル指示信号に応じて調光信号Ｓ１を生成し、調光点灯回路部７へ出力する（図１４（ａ）参照）。そして蛍光ランプ８は指示された調光レベルで点灯する（図１４（ｂ）参照）。なお、蛍光ランプ８の調光レベルは後述する照明装置１から受信側装置３００への情報送信時および情報送信後においても同一レベルとなる。   Hereinafter, operation | movement of the illuminating device 1 is demonstrated using Fig.14 (a)-(d). First, at normal time (when information is not transmitted to the reception-side device 300), the control unit 3 generates a dimming signal S1 according to the dimming level instruction signal received by the infrared signal reception unit 9 from the transmission-side device 200. And output to the dimming / lighting circuit unit 7 (see FIG. 14A). Then, the fluorescent lamp 8 is lit at the instructed dimming level (see FIG. 14B). The dimming level of the fluorescent lamp 8 is the same level during and after information transmission from the lighting device 1 to the receiving side device 300, which will be described later.

また通常時において、制御部３はシリアル通信信号Ｓ２を出力せず（図１４（ｃ）参照）、変調回路部５は一定周波数の変調信号を生成して、ＬＥＤランプ６を一定周波数で点灯させる（図１４（ｄ）参照）。このときＬＥＤランプ６は調光点灯状態になり、後述する受信側装置３００への情報送信時に、ＬＥＤランプ６の調光レベルが大きく変化することを防止している。   Further, in a normal time, the control unit 3 does not output the serial communication signal S2 (see FIG. 14C), and the modulation circuit unit 5 generates a modulation signal having a constant frequency and lights the LED lamp 6 at a constant frequency. (See FIG. 14 (d)). At this time, the LED lamp 6 is in the dimming lighting state, and the dimming level of the LED lamp 6 is prevented from changing greatly when information is transmitted to the receiving side device 300 described later.

次に照明装置１から受信側装置３００への情報送信時の照明装置１の動作について説明する。まず、赤外信号受信部９が送信側装置２００から情報送信要求信号を受信すると、制御部３は、予め記憶部９に格納してあるＬＥＤランプ６の照射方向情報を読み出し、読み出した情報に基づいてモータ駆動部１１にモータ駆動信号Ｓ４を出力し、モータ駆動部１１はモータ１２を回転させて、ＬＥＤランプ６の照射方向を切り換え、ＬＥＤランプ６の照射エリアＡｂを移動させる。この情報送信時のＬＥＤランプ６の照射方向は、蛍光ランプ８の配光のピークである装置直下を避ける方向（図１３に示すＸ２方向）に設定される。また、複数の受信側装置３００が存在する場合は、送信側装置２００からの情報送信要求信号にアドレスの概念を付加し、受信した情報送信要求信号に付加された個々のアドレス毎にＬＥＤランプ６の照射方向を記憶部９に格納しておけばよい。   Next, the operation of the lighting device 1 when information is transmitted from the lighting device 1 to the receiving-side device 300 will be described. First, when the infrared signal receiving unit 9 receives an information transmission request signal from the transmission-side device 200, the control unit 3 reads the irradiation direction information of the LED lamp 6 stored in the storage unit 9 in advance, and uses the read information as the read information. Based on this, a motor drive signal S4 is output to the motor drive unit 11, and the motor drive unit 11 rotates the motor 12 to switch the irradiation direction of the LED lamp 6 and move the irradiation area Ab of the LED lamp 6. The irradiation direction of the LED lamp 6 at the time of this information transmission is set to a direction (X2 direction shown in FIG. 13) that avoids a position just below the apparatus, which is a light distribution peak of the fluorescent lamp 8. Further, when there are a plurality of receiving side devices 300, the concept of an address is added to the information transmission request signal from the transmitting side device 200, and the LED lamp 6 is added to each individual address added to the received information transmission request signal. May be stored in the storage unit 9.

そして制御部３は上記ＬＥＤランプ６の照射方向制御が終了した後、予め記憶部９に格納してある照明装置１の器具情報や位置情報等を読み出し、読み出した情報をシリアル通信信号Ｓ２に変換して変調回路部５へ出力し（図１４（ｃ）参照）、変調回路部５は、シリアル通信信号Ｓ２に応じて変調信号を生成する（図１４（ｄ）参照）。図１４（ｃ），（ｄ）の区間Ｔの拡大図は実施形態１と同様に図５（ａ），（ｂ）に示され、変調回路部５は、この変調信号に応じてＬＥＤランプ６へ供給する電力に変調をかけ、ＬＥＤランプ６を変調点灯させる。そして、ＬＥＤランプ６は変調された照明光（光信号）を発し、受信側装置３００はこの光信号を受けることで、器具情報や位置情報等を受信する。このとき、ＬＥＤランプ６は結果として調光点灯状態になるが、この調光レベルが上記通常時におけるＬＥＤランプ６の調光レベルと同レベルであることが望ましい。   Then, after the irradiation direction control of the LED lamp 6 is finished, the control unit 3 reads out the appliance information, position information, etc. of the lighting device 1 stored in advance in the storage unit 9, and converts the read information into a serial communication signal S2. And output to the modulation circuit unit 5 (see FIG. 14C), and the modulation circuit unit 5 generates a modulation signal in accordance with the serial communication signal S2 (see FIG. 14D). 14 (c) and 14 (d) are enlarged views of the section T shown in FIGS. 5 (a) and 5 (b) in the same manner as in the first embodiment, and the modulation circuit unit 5 uses the LED lamp 6 in accordance with the modulation signal. The electric power to be supplied is modulated, and the LED lamp 6 is modulated and lit. The LED lamp 6 emits modulated illumination light (optical signal), and the receiving-side apparatus 300 receives the optical signal, thereby receiving instrument information, position information, and the like. At this time, although the LED lamp 6 is in the dimming lighting state as a result, it is desirable that the dimming level is the same as the dimming level of the LED lamp 6 in the normal time.

次に照明装置１から受信側装置３００への情報送信が終了すると、制御部３は、ＬＥＤランプ６の照射方向が情報送信前の照射方向となるようにモータ駆動信号Ｓ４をモータ駆動部１１へ出力して、モータ駆動部１１はモータ１２を回転させて、ＬＥＤランプ６の照射方向を情報送信前の方向に切り換える。また、制御部３はシリアル通信信号Ｓ２を出力せず（図１４（ｃ）参照）、変調回路部５は情報送信前と同様に一定の周波数でＬＥＤランプ６を点灯させる（図１４（ｄ）参照）。   Next, when the information transmission from the lighting device 1 to the receiving side device 300 is completed, the control unit 3 sends the motor drive signal S4 to the motor drive unit 11 so that the irradiation direction of the LED lamp 6 becomes the irradiation direction before the information transmission. The motor driving unit 11 rotates the motor 12 to switch the irradiation direction of the LED lamp 6 to the direction before information transmission. Further, the control unit 3 does not output the serial communication signal S2 (see FIG. 14C), and the modulation circuit unit 5 lights the LED lamp 6 at a constant frequency as before information transmission (FIG. 14D). reference).

図１５は上記制御を行った場合の床面照度の変化を示すもので、蛍光ランプ８は、装置直下をピークとした配光で、広い指向性の照度分布Ｙａ（実線）を有しており、通常時、ＬＥＤランプ６近傍においては、指向性が強いＬＥＤランプ６の照度分布Ｙｂ（一点鎖線）より大きな床面照度となる。そしてＬＥＤランプ６による情報送信時には、蛍光ランプ８による照度が低いＸ２方向へＬＥＤランプ６の照射位置を移動させ、照明装置１の照度分布は、Ｘ２方向に移動したＬＥＤランプ６の照度分布Ｙｂ’（実線）を蛍光ランプ８の照度分布Ｙａに重畳させた特性となる。   FIG. 15 shows a change in floor illuminance when the above control is performed. The fluorescent lamp 8 has a light distribution with a peak immediately below the apparatus and has a wide directivity illuminance distribution Ya (solid line). In normal times, in the vicinity of the LED lamp 6, the floor surface illuminance is larger than the illuminance distribution Yb (dashed line) of the LED lamp 6 having high directivity. At the time of information transmission by the LED lamp 6, the irradiation position of the LED lamp 6 is moved in the X2 direction where the illuminance by the fluorescent lamp 8 is low, and the illuminance distribution of the lighting device 1 is the illuminance distribution Yb ′ of the LED lamp 6 moved in the X2 direction. (Solid line) is superimposed on the illuminance distribution Ya of the fluorescent lamp 8.

したがって、ＬＥＤランプ６が発する光信号を用いて照明装置１から受信側装置３００へ情報を送信する時には、補助照明部１ｂのＬＥＤランプ６の照射方向が主照明部１ａの蛍光ランプ８による照度が低い位置に自動的に変更されるため、情報送信時のＬＥＤランプ６の照射エリアＡｂにおいてはＬＥＤランプ６による照度の割合が高くなる。したがって、情報伝送のＳ／Ｎ比を高くして情報伝送の確実性を高めることが可能となる。また、ＬＥＤランプ６を通常時に補助照明として照射させたい位置と、受信側装置３００を設置したい位置とが異なる場合でも、情報送信時のみＬＥＤランプ６の照射方向を受信側装置３００に向けることができ、照明機能と情報送信機能との両立を容易に図ることができる。   Therefore, when information is transmitted from the lighting device 1 to the receiving-side device 300 using the light signal emitted from the LED lamp 6, the illumination direction of the LED lamp 6 of the auxiliary lighting unit 1b is the illuminance by the fluorescent lamp 8 of the main lighting unit 1a. Since the position is automatically changed to a lower position, the illuminance ratio of the LED lamp 6 becomes higher in the irradiation area Ab of the LED lamp 6 at the time of information transmission. Therefore, the S / N ratio of information transmission can be increased to increase the reliability of information transmission. Further, even when the position where the LED lamp 6 is to be irradiated as auxiliary illumination at the normal time and the position where the receiving apparatus 300 is to be installed are different, the irradiation direction of the LED lamp 6 can be directed to the receiving apparatus 300 only during information transmission. It is possible to easily achieve both the illumination function and the information transmission function.

なお、ＬＥＤランプ６を変調点灯させて光信号を送信している間、ＬＥＤランプ６による照度の割合が高くなるようにＬＥＤランプ６と蛍光ランプ８とのうち少なくともいずれか一方の照射方向を可変とする構成であればよい。   While the LED lamp 6 is modulated and lit and an optical signal is transmitted, the irradiation direction of at least one of the LED lamp 6 and the fluorescent lamp 8 is variable so that the ratio of illuminance by the LED lamp 6 is increased. Any configuration may be used.

（実施形態２）
本実施形態の照明装置１のブロック構成は参考例２と同様に図１１に示され、ＬＥＤランプ６による情報送信時の蛍光ランプ８の制御のみが参考例２とは異なり、参考例２と同様の構成には同一の符号を付して説明は省略する。 ( Embodiment 2 )
Block configuration of the illumination apparatus 1 of this embodiment is shown in FIG. 11 in the same manner as in Reference Example 2, only the control of the LED lamp 6 fluorescent lamp 8 during information transmission by Unlike Example 2, the same manner as in Reference Example 2 The same reference numerals are given to the configurations of and the description is omitted.

本実施形態の制御部３は、変調回路部５へシリアル通信信号Ｓ２を出力している期間において、実施形態１と同様に、調光点灯回路部７へ出力する調光信号Ｓ１のオンデューティを増加させ（図４（ａ）参照）、蛍光ランプ８の調光レベルを低下させる（図４（ｂ）参照）とともに、参考例２と同様に、補助照明部１ｂのＬＥＤランプ６の照射方向が主照明部１ａの蛍光ランプ８による照度が低い位置に自動的に変更される。 In the period when the serial communication signal S2 is output to the modulation circuit unit 5, the control unit 3 of the present embodiment sets the on-duty of the dimming signal S1 to be output to the dimming lighting circuit unit 7 as in the first embodiment. In addition to increasing (see FIG. 4 (a)) and lowering the dimming level of the fluorescent lamp 8 (see FIG. 4 (b)), the direction of irradiation of the LED lamp 6 of the auxiliary illumination unit 1b is similar to that in Reference Example 2. It is automatically changed to a position where the illuminance by the fluorescent lamp 8 of the main illumination unit 1a is low.

図１６は上記制御を行った場合の床面照度の変化を示すもので、蛍光ランプ８は、通常時において、装置直下をピークとした配光で、広い指向性の照度分布Ｙａ１（一点鎖線）を有しており、ＬＥＤランプ６近傍においては、指向性が強いＬＥＤランプ６の照度分布Ｙｂ（一点鎖線）より大きな床面照度となる。しかし、ＬＥＤランプ６が発する光信号を用いて照明装置１から受信側装置３００へ情報を送信する時には、蛍光ランプ８の調光レベルが自動的に低下し、蛍光ランプ８の照度分布は床面照度が低下した照度分布Ｙａ２（実線）となるとともに、蛍光ランプ８による照度が低いＸ２方向へＬＥＤランプ６の照射位置を移動させ、照明装置１の照度分布は、Ｘ２方向に移動したＬＥＤランプ６の照度分布Ｙｂ’（実線）を蛍光ランプ８の照度分布Ｙａ２に重畳させた特性となる。   FIG. 16 shows changes in floor illuminance when the above control is performed. The fluorescent lamp 8 has a light distribution with a peak immediately below the apparatus in a normal state and a wide directivity illuminance distribution Ya1 (dashed line). In the vicinity of the LED lamp 6, the floor surface illuminance is larger than the illuminance distribution Yb (dashed line) of the LED lamp 6 having strong directivity. However, when information is transmitted from the lighting device 1 to the receiving-side device 300 using the light signal emitted from the LED lamp 6, the dimming level of the fluorescent lamp 8 is automatically lowered, and the illuminance distribution of the fluorescent lamp 8 is the floor surface. The irradiation position of the LED lamp 6 is moved in the X2 direction where the illuminance decreases Ya2 (solid line) and the illuminance by the fluorescent lamp 8 is low, and the illuminance distribution of the illumination device 1 is moved in the X2 direction. The illuminance distribution Yb ′ (solid line) is superimposed on the illuminance distribution Ya2 of the fluorescent lamp 8.

したがって、ＬＥＤランプ６が発する光信号を用いて照明装置１から受信側装置３００へ情報を送信する時には、蛍光ランプ８の床面照度は低下し、ＬＥＤランプ６による照度の割合が高くなるとともに、補助照明部１ｂのＬＥＤランプ６の照射方向が主照明部１ａの蛍光ランプ８による照度が低い位置に自動的に変更されるため、情報送信時のＬＥＤランプ６の照射エリアＡｂにおいてはＬＥＤランプ６による照度の割合が一層高くなり、情報伝送のＳ／Ｎ比をより一層高くして情報伝送の確実性をさらに高めることが可能となる。   Therefore, when transmitting information from the lighting device 1 to the receiving-side device 300 using the light signal emitted by the LED lamp 6, the floor surface illuminance of the fluorescent lamp 8 decreases, and the illuminance ratio by the LED lamp 6 increases. Since the irradiation direction of the LED lamp 6 of the auxiliary illumination unit 1b is automatically changed to a position where the illuminance by the fluorescent lamp 8 of the main illumination unit 1a is low, the LED lamp 6 is irradiated in the irradiation area Ab of the LED lamp 6 at the time of information transmission. The ratio of the illuminance due to becomes higher, and the S / N ratio of information transmission can be further increased to further increase the reliability of information transmission.

また、蛍光ランプ８の調光とＬＥＤランプ６の照射方向切換とによる相乗効果によって情報伝送の確実性に余裕が生じる環境においては、情報伝送時における蛍光ランプ８の調光レベルの低下度合を小さくすることが可能となり、情報伝送時においても照明機能の低下を最小限に抑えることができる。   Further, in an environment where there is a margin in the reliability of information transmission due to the synergistic effect of the dimming of the fluorescent lamp 8 and the irradiation direction switching of the LED lamp 6, the degree of decrease in the dimming level of the fluorescent lamp 8 during information transmission is reduced. This makes it possible to minimize the deterioration of the illumination function even during information transmission.

なお、本実施形態では実施形態１と参考例２とを併せた構成であるが、実施形態１、参考例１，２のうちいずれか２つ以上の構成を併せたものであっても、相乗効果によって情報伝送の確実性をさらに高めることが可能となる。 In the present exemplary embodiment is configured in conjunction with the first embodiment and the reference example 2, the embodiment 1, even if they together any two or more configurations of Reference Examples 1 and 2, synergistic The reliability of information transmission can be further enhanced by the effect.

上記実施形態１，２参考例１，２においては、主照明部１ａと補助照明部１ｂとが同一の器具本体１０に設けられているが、主照明部１ａと補助照明部１ｂとを別々の器具に設けて、主照明部１ａと補助照明部１ｂとを分離しても上記同様の効果を得ることができる。この場合、制御部の共通化を図るためには器具間に調光信号線等を配線する必要がある。 In Embodiments 1 and 2 in Reference Examples 1 and 2 , the main illumination unit 1a and the auxiliary illumination unit 1b are provided in the same instrument body 10, but the main illumination unit 1a and the auxiliary illumination unit 1b are separately provided. The same effect as described above can be obtained even if the main illumination unit 1a and the auxiliary illumination unit 1b are separated from each other by providing the device. In this case, in order to make the control unit common, it is necessary to wire a dimming signal line or the like between the instruments.

本発明の実施形態１の照明装置のブロック構成および照明装置を用いた情報伝送装置のシステム構成を示す図である。It is a figure which shows the block configuration of the illuminating device of Embodiment 1 of this invention, and the system configuration | structure of the information transmission apparatus using an illuminating device. 同上の下面を示す図である。It is a figure which shows the lower surface same as the above. 同上の側面および照射エリアを示す図である。It is a figure which shows a side surface and irradiation area same as the above. 同上の動作波形を示す図であり、（ａ）は調光信号、（ｂ）は蛍光ランプの調光レベル、（ｃ）はシリアル通信信号、（ｄ）は変調信号を示す。It is a figure which shows an operation waveform same as the above, (a) is a light control signal, (b) is a light control level of a fluorescent lamp, (c) is a serial communication signal, (d) is a modulation signal. 図４の区間Ｔの拡大図を示し、（ａ）はシリアル通信信号、（ｂ）は変調信号を示す。The enlarged view of the area T of FIG. 4 is shown, (a) shows a serial communication signal, (b) shows a modulation signal. 同上の床面照度分布を示す図である。It is a figure which shows a floor surface illumination intensity distribution same as the above. 本発明の参考例１の照明装置のブロック構成を示す図である。It is a figure which shows the block configuration of the illuminating device of the reference example 1 of this invention. 同上の下面を示す図である。It is a figure which shows the lower surface same as the above. 同上の側面および照射エリアを示す図である。It is a figure which shows a side surface and irradiation area same as the above. 同上の動作波形を示す図であり、（ａ）は蛍光ランプの調光信号、（ｂ）は蛍光ランプの調光レベル、（ｃ）は白色系ＬＥＤランプの調光信号、（ｄ）は白色系ＬＥＤランプの調光レベル、（ｅ）は暖色系ＬＥＤランプの調光レベル、（ｆ）はシリアル通信信号、（ｇ）は変調信号を示す。It is a figure which shows an operation waveform same as the above, (a) is a dimming signal of a fluorescent lamp, (b) is a dimming level of a fluorescent lamp, (c) is a dimming signal of a white LED lamp, and (d) is white. The dimming level of the system LED lamp, (e) shows the dimming level of the warm color LED lamp, (f) shows the serial communication signal, and (g) shows the modulation signal. 本発明の参考例２の照明装置のブロック構成を示す図である。It is a figure which shows the block configuration of the illuminating device of the reference example 2 of this invention. 同上の下面を示す図である。It is a figure which shows the lower surface same as the above. 同上の側面および照射エリアを示す図である。It is a figure which shows a side surface and irradiation area same as the above. 同上の動作波形を示す図であり、（ａ）は調光信号、（ｂ）は蛍光ランプの調光レベル、（ｃ）はシリアル通信信号、（ｄ）は変調信号を示す。It is a figure which shows an operation waveform same as the above, (a) is a light control signal, (b) is a light control level of a fluorescent lamp, (c) is a serial communication signal, (d) is a modulation signal. 同上の床面照度分布を示す図である。It is a figure which shows a floor surface illumination intensity distribution same as the above. 本発明の実施形態２の照明装置の床面照度分布を示す図である。It is a figure which shows the floor surface illumination intensity distribution of the illuminating device of Embodiment 2 of this invention. 従来の照明装置のブロック構成および照明装置を用いた情報伝送装置のシステム構成を示す図である。It is a figure which shows the block configuration of the conventional illuminating device, and the system configuration | structure of the information transmission apparatus using an illuminating device. 従来の床面照度分布を示す図である。It is a figure which shows the conventional floor surface illumination intensity distribution.

１ 照明装置
２ 電源部
３ 制御部
４ 記憶部
５ 変調回路部
６ ＬＥＤランプ
７ 調光点灯回路部
８ 蛍光ランプ
９ 赤外信号受信部
ＡＣ 商用電源
２００ 送信側装置
３００ 受信側装置 DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Power supply part 3 Control part 4 Memory | storage part 5 Modulation circuit part 6 LED lamp 7 Dimming lighting circuit part 8 Fluorescent lamp 9 Infrared signal receiving part AC Commercial power supply 200 Transmission side apparatus 300 Reception side apparatus

Claims (1)

第１の照明手段と、ＬＥＤランプを光源として用いた第２の照明手段と、前記ＬＥＤランプの発光による光信号を外部に送信する光信号送信手段とを備えて、前記第１の照明手段の照射範囲と前記第２の照明手段の照射範囲とが互いに重なる共通の照射範囲があり、前記光信号送信手段が光信号を送信していないとき、前記第１の照明手段を第１の調光レベルで点灯させるとともに、前記第２の照明手段を第２の調光レベルで点灯させ、前記光信号送信手段が光信号を送信しているとき、前記第１の照明手段を第１、第２の調光レベルより低い第３の調光レベルで点灯させるとともに、前記第２の照明手段を第２の調光レベルで点灯させ、光信号送信後は光信号送信前の調光レベルに戻す照明制御手段を設けたことを特徴とする照明装置。 A first illumination unit; a second illumination unit using an LED lamp as a light source; and an optical signal transmission unit configured to transmit an optical signal generated by light emission of the LED lamp to the outside. When there is a common irradiation range where the irradiation range and the irradiation range of the second illumination unit overlap each other, and the optical signal transmission unit is not transmitting an optical signal, the first illumination unit is controlled by the first dimming The second lighting means is turned on at a second dimming level, and the first lighting means is switched to the first and second when the optical signal transmitting means is transmitting an optical signal . Lighting at a third dimming level lower than the first dimming level, lighting the second illumination means at the second dimming level, and returning to the dimming level before transmitting the optical signal after transmitting the optical signal. A lighting device comprising a control means.
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