JP2016213140A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system capable of performing reduction of the cost, weight saving, enhancement of the function and power saving.SOLUTION: A lighting system comprises a first luminaire 100 and at least one second luminaire 200 for performing lighting with a driving voltage supplied from the first luminaire. The first luminaire 200 includes an AC-DC converter 12 for converting an AC voltage into a DC voltage, a driving unit 13 for converting the DC voltage into a driving voltage according to a dimming level, a light source unit 10 having a solid light emitting element for emitting light with the driving voltage, and a controller 16 for instructing the dimming level to the driving unit 13. The second luminaire 200 has a light source unit 10 for emitting light with the driving voltage supplied from the first luminaire.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lighting system having a plurality of lighting fixtures.

  For example, Patent Literature 1 discloses a lighting device that turns on a fluorescent lamp and includes a power supply circuit and a plurality of lighting devices. The power supply circuit puts a control signal for controlling the fluorescent lamp on a direct current signal for lighting the fluorescent lamp, and sends the direct current signal to the connection line. In addition, the lighting fixture has a function of converting the DC signal from the connection line into an AC signal for lighting the fluorescent lamp. When a control signal is detected from the DC signal, the fluorescent lamp is detected according to the detected control signal. Controls the lighting state of.

  Thereby, a control line is unnecessary between a power supply circuit and each lighting fixture, and should just be wired only between an operation part and a power supply circuit. That is, the wiring of the control line is shortened. Further, since the power supply circuit is shared by a plurality of lighting fixtures, the circuit configuration is simplified.

Japanese Unexamined Patent Publication No. 2009-134876

  However, Patent Document 1 has a problem that cost reduction, weight reduction, and power consumption reduction are not sufficiently achieved. For example, each lighting fixture requires a switching circuit as an inverter, and the circuit cost is high. In addition, it is difficult to provide a dimming function that changes the brightness.

  An object of this invention is to provide the illumination system suitable for cost reduction, weight reduction, high functionality, and power saving.

  In order to achieve the above object, one embodiment of a lighting system according to the present invention is a first lighting fixture and at least one second lighting fixture that illuminates with a driving voltage supplied from the first lighting fixture. And the first lighting fixture emits light by the drive voltage, a conversion unit that converts an AC voltage into a DC voltage, a drive unit that converts the DC voltage into the drive voltage according to a dimming level, and A light source unit having a solid light-emitting element; and a control unit that instructs the drive unit to control the dimming level. The second lighting fixture emits light by the driving voltage supplied from the first lighting fixture. A light source unit.

  According to the illumination system according to the present invention, it is possible to reduce the cost, reduce the weight, increase the functionality, and save power.

1 is a diagram illustrating a configuration example of a lighting system according to Embodiment 1. FIG. FIG. 2 is a block diagram illustrating a configuration example of the illumination system according to Embodiment 1. FIG. 3 is a flowchart illustrating an example of sensor processing according to the first embodiment. FIG. 4 is a flowchart illustrating an example of demand processing according to the first embodiment. FIG. 5 is a flowchart illustrating an example of the power saving process according to the first embodiment. FIG. 6 is a flowchart illustrating another example of the power saving process according to the first embodiment. FIG. 7 is an explanatory diagram illustrating an example of a schedule process according to the first embodiment. FIG. 8 is a block diagram illustrating a configuration example of the illumination system according to Embodiment 2. FIG. 9A is a diagram showing a first example of a modulated first lighting voltage according to Embodiment 2. FIG. 9B is a diagram showing a correspondence relationship between a voltage and a color of illumination light in the first example of the modulated first lighting voltage according to Embodiment 2. FIG. 10A is a diagram illustrating a second example of the modulated first lighting voltage according to Embodiment 2. FIG. 10B is a diagram showing a correspondence relationship between the pulse width and the color of illumination light in the third example of the modulated first lighting voltage according to Embodiment 2. FIG. 11A is a diagram illustrating a second example of the modulated first lighting voltage according to Embodiment 2. FIG. 11B is a diagram showing a correspondence relationship between the pulse width and the fade time in the third example of the modulated first lighting voltage according to Embodiment 2. FIG. 12 is a block diagram illustrating a configuration example of a lighting system according to Embodiment 3. FIG. 13A is a diagram illustrating an example of toning data according to Embodiment 3. FIG. 13B is a diagram illustrating another example of the toning data according to Embodiment 3. FIG. 14 is a block diagram illustrating a configuration example of a lighting system according to the first modification. FIG. 15A is a block diagram illustrating a configuration example of an illumination system according to Modification 2. FIG. 15B is a flowchart illustrating an example of the power saving process according to the second modification. FIG. 15C is a flowchart illustrating another example of the power saving process according to the second modification. FIG. 16 is a block diagram illustrating a configuration example of an illumination system according to Modification 3. FIG. 17 is a block diagram illustrating a configuration example of a lighting device and a second lighting fixture according to the third modification.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, steps, the order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention will be described as optional constituent elements that constitute a more preferable embodiment. Moreover, each figure is a schematic diagram and does not necessarily represent a strict dimension.

(Embodiment 1)
Hereinafter, the illumination system in the present embodiment will be described with reference to the drawings.

[1.1 Illumination system configuration]
First, the overall configuration of the illumination system will be described.

  1 is a diagram illustrating a configuration example of a lighting system according to Embodiment 1. FIG. The lighting system of the figure includes a first lighting fixture 100, at least one second lighting fixture 200, and a remote controller 300.

  The 1st lighting fixture 100 and the 2nd lighting fixture 200 are lighting fixtures, such as a downlight type or a straight tube type, installed in a ceiling, for example.

  The first lighting fixture 100 is connected to an AC power supply AC, has at least a dimming function, and further supplies a DC driving voltage DC to the second lighting fixture 200. The driving voltage DC here is for lighting the first lighting fixture 100 and for supplying power to the second lighting fixture 200, and is, for example, a DC voltage of 50V or less.

  The second lighting fixture 200 illuminates with the driving voltage DC supplied from the first lighting fixture 100. The number of second lighting fixtures 200 that can be connected to one first lighting fixture 100 may be three or less, or five or less, for example. The number of connectable units may be determined according to the power supply capability of the first lighting fixture 100.

  The remote controller 300 controls the lighting function of the first lighting fixture 100. Specifically, the remote controller 300 provides the first lighting apparatus 100 with a lighting command for instructing lighting, a turn-off command for instructing turning off, a dimming command for instructing brightness, and a toning command for instructing color temperature. Etc.

[1.2 Structure of lighting equipment]
Next, a more specific configuration example than the first lighting fixture 100 and the second lighting fixture 200 will be described.

  FIG. 2 is a block diagram illustrating a configuration example of the illumination system according to Embodiment 1. As shown in the figure, the first lighting fixture 100 includes a light source unit 10 and a lighting device 11. The lighting device 11 includes an AC-DC conversion unit 12, a drive unit 13, a reception unit 14a, a communication unit 14b, a human sensor 15, a control unit 16, a storage battery 20, a charging circuit 21, a switching unit 22, and a connection member 30a.

  The light source unit 10 includes at least one solid-state light emitting element that emits light by the driving voltage DC supplied from the driving unit 13. The solid light emitting element may be, for example, an LED (Light Emitting Diode) or an organic EL (Electro-Luminescence) light emitting element. The light source unit 10 includes a first light source that emits illumination light of the first color and a second light source that emits illumination light of the second color. In the figure, the first light source is one of the light source 10w and the light source 10r, and the second light source is the other. Here, it is assumed that the first color is white and the second color is red. For example, the light source 10w is composed of a plurality of white LEDs connected in series. The light source 10r is composed of a plurality of red LEDs connected in series. By changing the ratio of the light emission amounts of the light source 10r and the light source 10w, the color temperature can be changed, that is, toned, from reddish illumination light to white illumination light. The first color and the second color are not limited to the above example, and the first color can be arbitrarily set so that the color has a higher color temperature and the second color has a lower color temperature. .

  The lighting device 11 is a part obtained by removing the light source unit 10 from the first lighting fixture 100, and is a circuit that lights the light source unit 10, that is, a circuit that supplies power and controls light control and color control.

  The AC-DC converter 12 converts an alternating voltage into a direct voltage. For example, the AC-DC conversion unit 12 converts an AC voltage of 100V into a DC voltage DC1 of 50V or less.

  The driving unit 13 converts the DC voltage DC1 or the DC voltage DC2 into a driving voltage DC corresponding to the dimming level, and supplies the driving voltage DC to the light source unit 10. Specifically, the drive unit 13 generates a first lighting voltage and a second lighting voltage as the driving voltage DC, and supplies the first lighting voltage to the light source 10w and the second lighting voltage to the light source 10r. . The drive voltage DC includes a first lighting voltage and a second lighting voltage. In the figure, the drive unit 13 includes a drive circuit 13w and a drive circuit 13r.

  The drive circuit 13w supplies a first lighting voltage corresponding to the dimming level indicated by the dimming signal w from the control unit 16 to the light source 10w. The first lighting voltage is, for example, a constant voltage signal having a voltage value corresponding to the dimming level, or a PWM (Pulse Width Modulation) signal having a duty corresponding to the dimming level. The drive circuit 13 w determines the voltage value and the duty according to the dimming signal w from the control unit 16.

  The drive circuit 13r supplies the second lighting voltage corresponding to the dimming level indicated by the dimming signal r from the control unit 16 to the light source 10r. The second lighting voltage is the constant voltage signal or the PWM signal.

  The receiving unit 14a receives a demand that instructs to reduce power consumption. The demand is transmitted in order to reduce peak power consumption, for example, from a power amount control device installed in a switchboard. The power amount control device is provided, for example, for each contract unit that receives power supply from an electric power company. The connection between the reception unit 14a and the power amount control device may be wired communication or wireless communication. The power amount control apparatus may have a function of measuring or predicting power consumption, or may have a function of predicting usable power. The power amount control device can be configured to transmit a demand instructing reduction of power consumption in accordance with power consumption or information received from a power company.

  The communication unit 14b receives a turn-on command, a turn-off command, a dimming command, a toning command, and the like from the remote controller 300. The connection between the communication unit 14b and the remote controller 300 may be wired communication or wireless communication. Further, the receiving unit 14a and the communication unit 14b may be one receiving unit. In that case, the demand and the command may be transmitted by the same communication path and the same protocol. The receiving unit 14a and the communication unit 14b are collectively referred to simply as the receiving unit 14.

  The human sensor 15 detects the presence / absence of a person near the first lighting fixture 100 or the second lighting fixture 200. The detection range may extend widely to the illumination ranges of the first lighting fixture 100 and the second lighting fixture 200.

  The control unit 16 instructs the drive unit 13 to turn on, turn off, light control, and color adjustment. For example, the control unit 16 instructs the drive circuit 13w to provide a dimming signal w indicating the dimming level, and instructs the drive circuit 13r to provide the dimming signal r indicating the dimming level. When the dimming command is received by the communication unit 14b, the control unit 16 determines the value of the dimming signal w and the value of the dimming signal r according to the dimming command, and instructs the drive circuit 13w and the drive circuit 13r. . Thus, the control unit 16 turns on the light source unit 10 with brightness according to the dimming instruction from the remote controller 300.

  Further, when the toning command is received by the communication unit 14b, the control unit 16 determines the ratio of the light emission amounts of the light source 10r and the light source 10w according to the toning command, and uses the ratio as the dimming signal w and the dimming signal r. To reflect. As a result, the ratio between the dimming signal w and the dimming signal r is reflected in the constant voltage values or the duties of the first lighting voltage and the second lighting voltage, and the white light of the light source 10w and the red light of the light source 10r. Mixing ratio. Thus, the control unit 16 turns on the light source unit 10 with the color or color temperature of the illumination light according to the dimming instruction from the remote controller 300.

  Further, when the demand is received by the receiving unit 14a, the control unit 16 stops the supply of the DC voltage DC1 from the AC-DC conversion unit 12 to the driving unit 13, and applies the DC voltage DC2 from the storage battery 20 to the driving unit 13. The switching unit 22 is switched so as to be supplied. In addition, when the remaining amount of the storage battery 20 is less than the threshold value, the control unit 16 does not perform the switching, and dims or turns off the first lighting fixture 100 and the second lighting fixture 200. Also good. This threshold may be in the range of 5% to 15% of the full charge capacity, for example. This threshold value is not limited to 5% to 15% and can be set at an arbitrary ratio from the full charge capacity.

  In addition, when the human sensor 15 detects the absence of a person, the control unit 16 controls the driving unit 13 so that the light source unit 10 is dimmed or turned off.

  The storage battery 20 is a rechargeable secondary battery.

  The charging circuit 21 charges the storage battery 20 using the DC voltage DC1 output from the AC-DC converter 12. The enable signal is input from the control unit 16 to the charging circuit 21. The charging circuit 21 can be charged when the enable signal is valid, and is not charged when the enable signal is invalid.

  The switching unit 22 selectively outputs one of the direct-current voltage DC1 from the AC-DC conversion unit 12 and the direct-current voltage DC2 from the storage battery 20 to the drive unit 13 in accordance with a control signal from the control unit 16. The switching unit 22 is configured by, for example, a switch transistor and a diode.

  The connection member 30 a is a connector for outputting the drive voltage DC from the drive unit 13 to the second lighting fixture 200, and is connected to the cable 30. The cable 30 has a connection member 30b at one end and a connection member 30a at the other end. The connection member 30 a is connected to the second lighting fixture 200 via the cable 30. In the figure, since the drive voltage DC includes the first lighting voltage and the second lighting voltage, the cable 30 is a substantially three-wire cable corresponding to the first lighting voltage, the second lighting voltage, and the ground level. It is. The term “substantially three wires” refers to the number of signals, not the number of wires. For example, a cable having four wires corresponding to two wires for the ground level and one wire corresponding to each of the first and second lighting voltages is substantially three wires. In addition, you may provide the terminal block which electrically connects the edge part of a wire instead of the connection members 30a and 30b.

  Moreover, as shown to the figure, the 2nd lighting fixture 200 is provided with the light source part 10, the connection member 30a, and the connection member 30b. The light source unit 10, the connection member 30 a, and the connection member 30 b may be the same as the components with the same reference numerals of the first lighting fixture 100 and the cable 30. Since the second lighting fixture 200 receives the driving voltage DC (that is, the first lighting voltage and the second lighting voltage) from the first lighting fixture 100 via the cable 30, the driving in the first lighting fixture 100 is performed. The unit 13 is turned on, turned off, dimmed, and toned.

[2 Operation of lighting system]
Hereinafter, the operation of the illumination system according to the first embodiment configured as described above will be described separately for a sensor processing example, a demand processing example, and a schedule processing example.

[2.1 Sensor processing example]
First, an example of sensor processing will be described.

  FIG. 3 is a flowchart illustrating an example of sensor processing according to the first embodiment. As shown in the figure, when the human sensor 15 detects the absence of a person (no in S31), the control unit 16 controls the drive unit 13 so that the light source unit 10 is dimmed or extinguished (S33). Whether the light is dimmed or turned off is set in advance. For example, the light may be dimmed during the daytime and turned off during the nighttime. Dimming means dimming from the current dimming level (that is, the set dimming level), for example, 50% brightness.

  On the other hand, when the human sensor 15 detects the presence of a person (Yes in S31), the control unit 16 controls the drive unit 13 to light up at the set dimming level (S32), and then a certain time has elapsed. If yes (yes in S34), the process returns to step S31. While the predetermined time has not elapsed (no in S34), the lighting state is maintained.

  Thus, since the light source unit 10 is dimmed or extinguished when no person is present, further power saving can be achieved.

  Note that the control unit 16 turns on or enables the human sensor 15 during a preset time period, and controls the rest of the human sensor 15 to be off or disabled. When the human sensor 15 is off or disabled, the controller 16 in FIG. You may make it not process.

[2.2 Demand processing example]
Next, an example of demand processing will be described.

  FIG. 4 is a flowchart illustrating an example of demand processing according to the first embodiment. As shown in the figure, when the receiving unit 14a receives a demand for instructing reduction of power consumption (S41), the control unit 16 performs power saving processing (S42).

  FIG. 5 is a flowchart illustrating an example of the power saving process S42 according to the first embodiment. In the same figure, the control part 16 switches the supply source of the direct-current voltage to the drive part 13 from the AC-DC conversion part 12 to the storage battery 20 (S51). Specifically, the control unit 16 supplies the DC voltage from the storage battery 20 to the drive unit 13 by switching the switching unit 22 so as to stop the supply of the DC voltage from the AC-DC conversion unit 12 to the drive unit 13. Let

  Thus, since the 1st lighting fixture 100 switches a power supply source from AC power supply to the storage battery 20 according to a demand, it can reduce or stop consumption of external electric power.

  In addition, the control part 16 may perform the power saving process S42 of FIG. 6 instead of FIG. FIG. 6 is a flowchart illustrating another example of the power saving process according to the first embodiment. In the figure, a sensor process (S61) is added as compared to FIG. This sensor process may be the same as in FIG.

  In this way, since the first lighting apparatus 100 switches the power supply source from the AC power supply to the storage battery 20 according to demand, it is possible to reduce or stop the consumption of external power, and further reduce the power consumption of the storage battery 20. Can be reduced.

[2.3 Schedule processing example]
Next, an example of schedule processing will be described.

  FIG. 7 is an explanatory diagram illustrating an example of a schedule process according to the first embodiment. In the figure, the schedule is represented by table data. This table data is preset in the memory in the control unit 16 by the user. In the figure, “start time−end time” indicates a time zone. “Demand processing” indicates, for example, the processing of FIGS. “Sensor processing” indicates the processing of FIG. 3, for example. “Charging process” indicates a charging operation of the storage battery 20 by the charging circuit 21. “Dimming process” indicates a process of increasing or decreasing the brightness in accordance with a dimming command from the remote controller 300. “Toning process” indicates a process of changing the color temperature or the color of the illumination light in accordance with the toning command from the remote controller 300. “0” indicates that no processing is performed, and “1” indicates that processing is performed.

  For example, in the time zone from 0:00 to 7:00, the control unit 16 performs the charging process and does not perform any other process. In the time zone from 7:00 to 12:00, the control unit 16 performs sensor processing, light adjustment processing, and color adjustment processing, and does not perform other processing.

  In this way, by scheduling the processing to be executed and the processing not to be executed for each time period, it is possible to optimize power saving according to the installation environment of the lighting system.

  As described above, the lighting system in the present embodiment can be reduced in cost, weight, and power saving. That is, the AC-DC converter 12 that converts alternating current to direct current only needs to be provided in the first lighting fixture 100, and the second lighting fixture 200 is not provided, so that the cost can be reduced. Moreover, it has a light control function as high functionality, and can light the 2nd lighting fixture 200 with the same brightness as the 1st lighting fixture 100. FIG. In other words, the dimming function of the first lighting fixture 100 and the plurality of second lighting fixtures 200 can be collectively controlled by the first lighting fixture 100.

  In addition, the AC-DC conversion unit 12 generally has poor conversion efficiency at a low power output. In this respect, compared to the case where the second lighting fixture 200 includes the AC-DC conversion unit 12 individually, the low power output of the AC-DC conversion unit 12 can be avoided, so that the conversion efficiency of the AC-DC conversion unit 12 is reduced. Can be improved and power can be saved. Since the light source unit 10 includes a solid light emitting element with high luminous efficiency, power saving can be achieved.

  Furthermore, compared with the case where the 2nd lighting fixture 200 is individually provided with the AC-DC conversion part 12, the 2nd lighting fixture 200 can be reduced in weight and size.

  Further, each of the second lighting fixtures 200 can have the same brightness and the same lighting color or color temperature as the first lighting fixture 100. That is, under the control of the first lighting fixture 100, the lighting color or color temperature of the first lighting fixture 100 and each of the second lighting fixtures 200 can be changed according to the toning command. For example, if the emission colors of the two light sources are white and red, the illumination color can be changed from a reddish color to a whitish color. Further, for example, if the light emission colors of two light sources are two of the three primary colors and a light source corresponding to the other color is provided, each of the second lighting fixtures 200 has the same brightness as the first lighting fixture 100. It can be widely changed to the same color temperature or the same illumination color. Even if the second lighting fixture 200 does not include a circuit for controlling the light control and the color adjustment inside, the second light fixture 200 has a high function of the light control and the color adjustment, and the cost of the second light fixture 200 is reduced. Can do.

(Embodiment 2)
Next, the illumination system in Embodiment 2 will be described. In the first embodiment, the second lighting fixture 200 can be dimmed and toned under the control of the first lighting fixture 100 by a substantially three-wire cable connection. On the other hand, in the second embodiment, an illumination system that enables dimming and toning by substantially two-wire cable connection will be described.

  FIG. 8 is a block diagram illustrating a configuration example of the illumination system according to Embodiment 2. Compared with FIG. 2, the figure mainly includes the point that the modulation unit 17 is added to the first lighting fixture 100, the point that the cable 30 is substantially two lines instead of substantially three lines, and the second illumination. The difference is that a demodulator 25 and a toning controller 26 are added to the appliance 200. Hereinafter, different points will be mainly described.

  The modulation unit 17 performs modulation to superimpose the toning signal c from the control unit 16 on the first lighting voltage. The toning signal c is a signal for instructing toning of the light source unit 10, and is, for example, a ratio between the light emission amount of the light source 10w and the light emission amount of the light source 10r, or a constant voltage value of the first lighting voltage and the second lighting voltage. And the ratio.

  Here, an example of modulation by the modulation unit 17 will be described.

  FIG. 9A is a diagram showing a first example of a modulated first lighting voltage according to Embodiment 2. FIG. 9B is a diagram showing a correspondence relationship between a voltage and a color of illumination light in the first example of the modulated first lighting voltage according to Embodiment 2.

  In FIG. 9A, it is assumed that the first lighting voltage has a voltage value of αV as the current dimming level. A negative pulse with a pulse width γ0 in the figure represents a dimming signal. In this example, the lower level of the negative pulse is set to a value equal to or lower than β1V and equal to or higher than β2V, and indicates a ratio between the color temperature or the light emission amount due to the first lighting voltage and the light emission amount due to the second lighting voltage. . As shown in FIG. 9B, when the lower level of the negative pulse is β1V, the color temperature is 6500K (white color), or the ratio of the light emission amount by the first lighting voltage and the light emission amount by the second lighting voltage is 1: 0. When the lower level of the negative pulse is β2V, the color temperature is 3000K (reddish color), or the ratio between the light emission amount of the first lighting voltage and the light emission amount of the second lighting voltage is 0: 1 is shown. If the lower level of the negative pulse is a value LV between β1V and β2V, the ratio between the light emission amount of the light source 10w and the light emission amount of the light source 10r is represented by x: (1-x). Here, x is a value from 0 to 1, and x = (L−β2) / (β1−β2).

  By this modulation, the second lighting fixture 200 does not need to receive the supply of the second lighting voltage, and generates the second lighting voltage from the modulated first lighting voltage. The pulse width γ0 of the negative pulse may be, for example, several μS to several hundred S, and may be arbitrarily determined. As for the transmission timing of the negative pulse, it is sufficient to transmit one or more negative pulses periodically or when changing the toning.

  The cable 30 is a substantially two-wire cable having a modulated first lighting voltage and a ground level.

  The demodulator 25 demodulates the color temperature or the ratio x from the modulated first lighting voltage, and outputs a toning signal c indicating the demodulation result to the toning controller 26.

  The toning control unit 26 supplies the first lighting voltage supplied from the first lighting fixture 100 via the cable 30 to the light source 10w, and from the first lighting voltage according to the toning signal c from the demodulation unit 25. A second lighting voltage is generated and supplied to the light source 10r.

  Thus, the 2nd lighting fixture 200 is equipped with the demodulation part 25 and the color-adjustment control part 26, By the 1st lighting fixture 100 by two types of substantially 2 lines, a 1st lighting voltage and a ground level, It can be connected, has a function of dimming and toning, wiring is easy, and wiring cost can be reduced.

  Subsequently, another example of the modulation of the first lighting voltage will be described.

  FIG. 10A is a diagram illustrating a second example of the modulated first lighting voltage according to Embodiment 2. FIG. 10B is a diagram showing a correspondence relationship between the pulse width and the color of illumination light in the second example of the modulated first lighting voltage according to Embodiment 2. 10A and 10B differ from FIGS. 9A and 9B in that information is placed on the pulse width of the negative pulse instead of placing information on the lower level of the negative pulse. Hereinafter, different points will be mainly described. The pulse width W of the negative pulse is set within the range of D1 to D2, and indicates the color temperature or the ratio y: (1-y) between the light emission amount by the first lighting voltage and the light emission amount by the second lighting voltage. . Here, y = (W−D2) / (D1−D2).

  The effect similar to that of the first example can be obtained by the second example of such modulation.

  FIG. 11A is a diagram illustrating a third example of the modulated first lighting voltage according to Embodiment 2. FIG. 11B is a diagram showing a correspondence relationship between the pulse width and the fade time in the third example of the modulated first lighting voltage according to Embodiment 2. 11A and 11B are the same as FIGS. 9A and 9B in that the information is put on the lower level of the negative pulse, and further, the information indicating the fade time is put on the pulse width of the negative pulse. ing. Hereinafter, different points will be mainly described. Note that FIG. 9B also applies to the third example of modulation in FIG. 11A.

  The pulse width of the negative pulse is set within the range of F1 to F2, and indicates a fade time when changing the toning, that is, the illumination color or the color temperature. In FIG. 11B, the pulse width F1 indicates that the illumination color or the color temperature is changed over the fade time T1. The pulse width F2 indicates that the illumination color or the color temperature is changed over the fade time T2. The fade times T1, T2 may be, for example, 0.5 seconds, 5 seconds, etc., and may be determined arbitrarily.

  According to the third example of such modulation, the same effect as in the first example can be obtained, and the fade time can be specified in the toning.

(Embodiment 3)
Next, an illumination system according to Embodiment 3 will be described. As in the second embodiment, the third embodiment is a lighting system that enables dimming and toning by a substantially two-wire cable connection, and is simpler and more comfortable than the second embodiment. An illumination system will be described.

  FIG. 12 is a block diagram illustrating a configuration example of a lighting system according to Embodiment 3. Compared with FIG. 2, the figure mainly includes a memory 27 for storing toning data in the first lighting fixture 100, and a memory 27 and a toning control unit 26 in the second lighting fixture 200. It is different from the added point. Hereinafter, different points will be mainly described.

  The memory 27 in the 1st lighting fixture 100 and the 2nd lighting fixture 200 memorize | stores the toning data for carrying out what is called sync toning which links light control and toning. Here, the toning data will be described with reference to FIGS. 13A and 13B.

  FIG. 13A is a diagram illustrating an example of toning data. The toning data shown in the figure is set so that the color temperature increases as the brightness increases.

  FIG. 13B is a diagram illustrating another example of the toning data. The toning data in the figure is set to suppress the brightness when the light temperature is reddish light (2200K to 2700K) and to brighten the light when the color temperature is pale blue light (2700K to 5000K). ing. In other words, the dimming level and the toning level are set so that a person feels comfortable with the light color and brightness.

  The cable 30 is a substantially two-wire cable having a first lighting voltage and a ground level. The cable 30 may be a substantially two-wire cable having a second lighting voltage and a ground level.

  The toning control unit 26 of the second lighting fixture 200 discriminates the dimming level and brightness of the first lighting voltage input from the first lighting fixture 100 via the cable 30, and from the discriminated brightness. The dimming level of the second lighting voltage is determined from the toning data in the memory 27, and the second lighting voltage of the determined dimming level is generated. When the cable 30 is substantially two lines of the second lighting voltage and the ground level, the toning control unit 26 determines the first lighting voltage from the dimming level of the second lighting voltage and the toning data. The dimming level may be determined.

  As described above, according to the present embodiment, the toning is linked to the dimming, that is, the illumination color can be automatically changed if the brightness is changed by the dimming. Moreover, since the 2nd lighting fixture 200 is provided with the color-adjustment control part 26 according to color-adjustment data, the 1st lighting voltage or the 2nd lighting voltage, and two types of substantially two lines of a ground voltage are used as the 1st lighting voltage. It can connect with the lighting fixture 100, wiring is easy, and wiring cost can be reduced.

(Modification 1)
Then, the modification of the said embodiment is demonstrated.

  First, Modification 1 will be described. In Embodiment 1, the illumination system having two emission colors of white light and red light has been described. In this modification, an illumination system having three emission colors of red light, green light, and blue light will be described.

  FIG. 14 is a block diagram illustrating a configuration example of a lighting system according to the first modification. Compared with FIG. 2, the figure includes a drive circuit 13 g and a drive circuit 13 b instead of the drive circuit 13 w, and the first and second lighting fixtures 100 and 200 in the first lighting fixture 100 and the second lighting fixture 200. The point provided with the 1st-3rd light source instead of a light source and the point from which the cable 30 is not substantially 3 lines but substantially 4 lines differ. Hereinafter, different points will be mainly described. In the first modification, power supplied from the drive circuits 13r, 13g, and 13b to the light sources 10r, 10g, and 10b is referred to as first, second, and third lighting voltages, respectively.

  The drive circuit 13g supplies a second lighting voltage corresponding to the dimming level indicated by the dimming signal g from the control unit 16 to the light source 10g.

  The drive circuit 13b supplies the third lighting voltage corresponding to the dimming level indicated by the dimming signal b from the control unit 16 to the light source 10b.

  The first to third light sources correspond to the light sources 10r, 10g, and 10b in FIG. Correspondence does not matter.

  The light source 10g is composed of a plurality of green LEDs connected in series. The light source 10b is composed of a plurality of blue LEDs connected in series. By changing the ratio of the light emission amounts of the light sources 10r, 10g, and 10b, the illumination color or color temperature can be changed, that is, the color can be adjusted in a wider range than in the first embodiment.

  The cable 30 is a substantially 4-wire cable having first to third lighting voltages and a ground level.

  As described above, according to the illumination system of the first modification, in addition to the effects of the first embodiment, since the light source of the three primary colors is provided, the degree of freedom of toning is high and a wide range of toning can be performed.

  Note that the illumination system according to the first modification may include the modulation unit 17, the demodulation unit 25, and the toning control unit 26 described in the second embodiment, and the cable 30 may be substantially two lines. For example, the cable 30 may transmit any one of the first to third lighting voltages and the ground level, and the modulation unit 17 and the demodulation unit 25 may modulate the color temperature to the lighting voltage.

  Further, the illumination system of the first modification may include the modulation unit 17, the demodulation unit 25, and the memory 27 described in the third embodiment, and the cable 30 may be substantially two wires.

(Modification 2)
Next, Modification 2 will be described. In Modification 2, an illumination system that does not include a storage battery will be described.

  FIG. 15A is a block diagram illustrating a configuration example of an illumination system according to Modification 2. This figure is different from FIG. 2 in that the storage battery 20, the charging circuit 21, and the switching unit 22 are deleted. Hereinafter, different points will be mainly described.

  Since the lighting system of the modification 2 does not have the storage battery 20, the power saving process of FIGS. 15B and 15C is performed instead of the power saving process of FIGS.

  FIG. 15B is a flowchart illustrating an example of the power saving process according to the second modification. The figure differs in having a step S51a for dimming or extinguishing instead of step S51 for switching to the storage battery 20 of FIG. The rest is the same as FIG. Whether the light is dimmed or turned off may be determined according to the setting environment of the lighting system. Moreover, the illumination system of the modification 2 does not perform a charging process among FIG.

  FIG. 15C is a flowchart illustrating another example of the power saving process according to the second modification. The figure differs in having a step S51a for dimming or extinguishing instead of step S51 for switching to the storage battery 20 of FIG. The rest is the same as FIG.

  Moreover, the illumination system of the modification 2 does not perform a charging process among FIG.

  As described above, according to the illumination system of the second modification, in addition to the effects of the first embodiment, since the storage battery is not provided, the size, weight, and cost can be further reduced.

(Modification 3)
Further, Modification 3 will be described. In Modification 3, an illumination system including a lighting device instead of the first lighting fixture 100 will be described.

  FIG. 16 is a diagram illustrating a configuration example of an illumination system according to Modification 3. The figure is different from FIG. 1 in that a lighting device 11 is provided instead of the first lighting fixture 100.

  FIG. 17 is a block diagram illustrating a configuration example of the lighting device 11 and the second lighting fixture 200 according to the third modification. The lighting device 11 of the figure has a configuration in which the light source unit 10 is deleted from the first lighting fixture 100 as compared to FIG. Hereinafter, different points will be mainly described.

  Since the lighting device 11 has a configuration in which the light source unit 10 is deleted from the first lighting fixture 100, the lighting device 11 supplies power only to the second lighting fixture 200 without illuminating itself. In other words, the lighting device 11 is a power supply device that supplies power to the second lighting fixture 200, and is a device that controls dimming and toning.

  As described above, according to the lighting system of the third modification, the second lighting fixture 200 can be thoroughly reduced in size, weight, and cost. For example, in the first embodiment, when the first lighting fixture 100 and the second lighting fixture 200 have the same appearance, the second lighting fixture 200 is made smaller than the first lighting fixture 100 having a large circuit scale. Can not do it. In the third modification, the second lighting fixture 200 is much smaller than that in the first embodiment. The weight can be reduced and the cost can be reduced.

  In the illumination system according to the third modification, the modulation unit 17, the demodulation unit 25, and the toning control unit 26 described in the second embodiment may be provided, and the cable 30 may be substantially two lines. For example, the cable 30 may transmit any one of the first to third lighting voltages and the ground level, and the modulation unit 17 and the demodulation unit 25 may modulate the color temperature to the lighting voltage.

  Moreover, the illumination system of the modification 3 may include the modulation unit 17, the demodulation unit 25, and the memory 27 described in the third embodiment, and the cable 30 may be substantially two wires.

  In the illumination system in each of the above-described embodiments, the drive circuit 13 can be configured to supply a current having a magnitude corresponding to the dimming level. At this time, the control unit 16 sends a constant current signal for instructing the current value supplied by the drive circuit 13 to the drive circuit 13. You may comprise so that the electric current value which the drive circuit 13 supplies may become the electric current according to the number of the 1st lighting fixture 100 or the 2nd lighting fixture 200. FIG. Furthermore, when the drive circuit 13 supplies a current having a magnitude corresponding to the dimming level, the light sources 10w of the first lighting fixture 100 and the second lighting fixture 200 are configured to be connected in series. You can also At the same time, the light sources 10r may be connected in series.

  As described above, the lighting system according to each embodiment includes the first lighting fixture 100 and at least one second lighting fixture 200 that illuminates with the driving voltage supplied from the first lighting fixture. The first lighting fixture 100 emits light by the drive voltage, the converter 12 that converts an AC voltage into a DC voltage, the drive unit 13 that converts the DC voltage into the drive voltage according to a dimming level. The light source part 10 which has a solid light emitting element, and the control part 16 which instruct | indicates the said light control level to the said drive part 13, The 2nd lighting fixture 200 is based on the drive voltage supplied from a 1st lighting fixture. It has the light source part 10 which light-emits.

  According to this, it is possible to reduce the cost, weight and power consumption of the lighting system. That is, since only one converter that converts alternating current into direct current is provided in the first lighting fixture 100, the cost can be reduced. The dimming function is provided as a high function, and the second lighting fixture 200 can be turned on with the same brightness as the first lighting fixture 100.

  In addition, the conversion efficiency of an AC-DC converter generally deteriorates at a low power output. In this respect, as compared with the case where the second lighting fixture includes the converter individually, the low power output of the converter can be avoided, so that the conversion efficiency of the converter can be improved and the power can be saved. Power consumption can be saved by having the light source unit having a solid light emitting element with high luminous efficiency.

  Furthermore, compared with the case where a 2nd lighting fixture is provided with a converter separately, a 2nd lighting fixture can be reduced in weight.

  Here, the first lighting apparatus 100 further includes a receiving unit 14 that receives a demand for instructing reduction of power consumption, and the control unit 16 reduces the light source unit when the demand is received by the receiving unit 14. You may control the drive part 13 so that it may light or light-extinguish.

  According to this, the light is dimmed or turned off according to the demand, so that further power saving can be achieved.

  Here, the first lighting apparatus further includes a rechargeable storage battery 20 and a receiving unit 14a that receives a demand for instructing reduction of power consumption. The control unit 16 receives the demand by the receiving unit 14. Then, the supply of the DC voltage from the conversion unit to the drive unit 13 may be stopped, and the DC voltage may be supplied from the storage battery 20 to the drive unit 13.

  According to this, since the power supply source is switched from the AC power supply to the storage battery according to the demand, it is possible to reduce the consumption of external power.

  Here, the control unit 16 may prohibit the charging of the storage battery except in the first night time period.

  According to this, since the storage battery can be charged with late-night power with a low electricity bill, the total electricity bill cost can be further reduced.

  Here, the control unit 16 may ignore the demand outside the second time zone in the daytime.

  According to this, since it switches from an alternating current power supply to a storage battery according to a demand, peak power consumption in the daytime can be reduced.

  Here, the light source units 10 in the first lighting fixture 100 and the second lighting fixture 200 respectively emit the first light source 10w that emits the first color illumination light and the second color illumination light. The second light source 10r, and the drive unit generates a first lighting voltage and a second lighting voltage as driving voltages, and the first and second light sources in the first lighting fixture 100 are connected to the first light source 10r. The first lighting device 100 further includes a communication unit 14b that receives a dimming command for instructing dimming and a toning command for instructing toning, and supplies a first lighting voltage and a second lighting voltage. 16, when a command for instructing dimming is received by the receiving unit 14, first and second dimming signals for instructing the dimming level are given to the driving unit so that the brightness according to the command is obtained. The drive unit 13 outputs the first and second dimming levels according to the first and second dimming levels. When the command for generating the second lighting voltage and instructing the color adjustment is received by the communication unit 14b, the dimming level and the second dimming level of the first dimming signal are set so as to obtain the illumination color corresponding to the command. The ratio of the dimming signal to the dimming level may be adjusted.

  According to this, each of the 2nd lighting fixture can be made into the same brightness, the same illumination color, or the same color temperature as a 1st lighting fixture. That is, under the control of the first lighting fixture, the lighting color of the first lighting fixture and each of the second lighting fixtures can be changed according to the toning command. For example, if the first and second colors are white and red, the illumination color can be changed from a reddish color to a whitish color. For example, if the first and second colors are two of the three primary colors and a light source corresponding to the other color is provided, each of the second lighting fixtures has the same brightness as the first lighting fixture. , Can be widely changed to the same lighting color.

  Here, the 1st lighting fixture 100 and the 2nd lighting fixture 200 are connected by the wiring which transmits the 1st lighting voltage and the 2nd lighting voltage, and the 1st light source in the 2nd lighting fixture 200 is The first lighting device 100 emits light by the first lighting voltage supplied via the wiring, and the second light source in the second lighting fixture 200 is supplied from the first lighting fixture 100 via the wiring. The second lighting voltage may emit light.

  According to this, the 2nd lighting fixture 200 does not need to be provided with the circuit which controls toning, and can reduce cost. In addition, the first lighting device 100 can be connected to the first lighting device 100 by three types of three wires of the first voltage signal, the second lighting voltage, and the ground voltage, and wiring is easy and wiring cost can be reduced.

  Here, the 1st lighting fixture 100 and the 2nd lighting fixture 200 are connected by the wiring which transmits the 1st lighting voltage, and the 1st lighting fixture further changes the illumination color to the 1st lighting voltage. The second luminaire 100 further includes a demodulator 25 that demodulates the data indicating the illumination color from the first lighting voltage supplied from the first luminaire 100, The first or second lighting voltage supplied from the first lighting fixture is input, the first lighting voltage and the second lighting voltage are generated according to the demodulated data, and the second lighting fixture 200 in the second lighting fixture 200 is generated. A toning control unit 26 that supplies the first and second light sources may be provided.

  According to this, if the 2nd lighting fixture 200 is provided with the color-adjustment control part, it can connect with the 1st lighting fixture 100 by two types of substantially 2 lines, a 1st lighting voltage and a ground voltage, Wiring is easy and wiring costs can be reduced.

  Here, the 1st lighting fixture 100 and the 2nd lighting fixture 200 are connected by the wiring 30 which transmits the 1st lighting voltage, and the 1st lighting fixture further includes the brightness of the light source part, and the illumination color. When the control unit 16 receives a command for instructing dimming by the receiving unit 14, the control unit 16 adjusts the brightness to correspond to the command. The first and second dimming signals indicating the dimming levels corresponding to the first and second lighting voltages are output to the drive unit, and the first dimming color is set to the illumination color indicated by the toning data. The ratio between the dimming level of the optical signal and the dimming level of the second dimming signal is adjusted, and the second lighting fixture 200 further includes a memory 27 for storing the toning data and a first lighting fixture. The first lighting voltage supplied via the wiring is input and the toning data Indicated generates a second operating voltage so that the illumination color may be a supplying toning control unit 26 to the second second light source of the luminaire 200 in.

  According to this, the toning is linked with the dimming, that is, the illumination color is automatically changed if the brightness is changed by the dimming. Moreover, if the 2nd lighting fixture 200 is provided with the toning control part according to the toning data, the 1st illumination by two types of substantially 2 lines of a 1st voltage or a 2nd lighting voltage, and a ground voltage will be carried out. It can connect with the instrument 100, wiring is easy, and wiring cost can be reduced.

  Here, the 1st lighting fixture 100 is further provided with the human sensor 15 which detects the presence or absence of the person of the 1st lighting fixture 100 vicinity or the 2nd lighting fixture 200 vicinity, and the control part 16 is human feeling. When the sensor 15 detects the absence of a person, the drive unit may be controlled so that the light source unit is dimmed or extinguished.

  According to this, since the light source unit is dimmed or turned off when no person is present, further power saving can be achieved.

  Here, the control part 16 may prohibit the detection of the human sensor 15 except a specific time slot | zone.

  According to this, for example, if a specific time zone is set to a midnight time zone, it can be dimmed or turned off when there is no person, and can be turned on when there is a person.

  Here, the drive unit converts the DC voltage into one of a drive voltage having a voltage value corresponding to the dimming level and a drive voltage pulse-modulated according to the dimming level, and The two luminaires may be connected by a cable having substantially two wires.

  According to this, the 2nd lighting fixture 200 can be connected with the 1st lighting fixture 100 by the substantial two lines of a drive voltage and a ground voltage, wiring is easy, and wiring cost can be reduced.

  Here, the light source unit 10 in the first lighting fixture 100 and the light source unit 10 in the second lighting fixture 200 each include a first light source 10w and the like, a second light source 10r and the like having different emission colors. The drive unit 13 generates, as drive voltages, a first lighting voltage for the first light source 10w and the like, and a second lighting voltage for the second light source 10r and the like. The luminaires may be connected by a cable having substantially three wires.

  According to this, the 2nd lighting fixture 200 does not need to be provided with the circuit which controls color-adjustment, but is substantially 3 lines of 3 types, a 1st lighting voltage, a 2nd lighting voltage, and a ground voltage. It can be connected to the first lighting fixture 100, wiring is easy, and wiring costs can be reduced.

  Although the lighting system according to the present invention has been described based on the embodiments, the present invention is not limited to the embodiments. Without departing from the gist of the present invention, various modifications conceived by those skilled in the art have been made in this embodiment, and other forms constructed by arbitrarily combining some components in the embodiments and modifications are also possible. Are included within the scope of the present invention.

10 Light source unit 10w, 10r, 10g, 10b Light source (first light source / second light source)
11 lighting device 12 AC-DC conversion part (conversion part)
13 Drive Unit 14 Receiver 15 Human Sensor 16 Control Unit 17 Modulation Unit 20 Storage Battery 25 Demodulation Unit 26 Toning Control Unit 27 Memory 30 Cable (Wiring)
100 1st lighting fixture 200 2nd lighting fixture

The driving unit 13 converts the DC voltage DC1 or the DC voltage DC2 into a driving voltage DC corresponding to the dimming level, and supplies the driving voltage DC to the light source unit 10. Specifically, the drive unit 13 generates a first lighting voltage and a second lighting voltage as the driving voltage DC, and supplies the first lighting voltage to the light source 10w and the second lighting voltage to the light source 10r. . The drive voltage DC includes a first lighting voltage and a second lighting voltage. In the figure, the drive unit 13 includes a drive circuit 13w and a drive circuit 13r. The light control level is a ratio indicating the brightness of light emitted from the light source. For example, it can be expressed as a ratio to the maximum brightness emitted by the light source. The dimming level is not limited to the ratio, and the brightness at which the light source emits light may be shown as it is.

Here, the control unit 16 may prohibit the charging of the storage battery in the first other times a predetermined time period of between bands when the night.

According to this, since the storage battery can be charged with late-night power , which is often set at a low price, the total cost of electricity can be further reduced.

Here, the control unit 16 may ignore the demand in the second other times a predetermined time period of between bands when the daytime.

According to this, since it switches from an alternating current power supply to a storage battery according to a demand, peak power consumption in the daytime can be reduced.
As described above, not only the electricity bill cost is set in the daytime and night time, but also the electricity bill cost is set finely in the specific time zone in the daytime and in the specific time zone at night. In such a case, it is possible to cope with fine control in which power is used in a time zone where the electricity bill cost is relatively low and a storage battery is used in a time zone where the electricity bill cost is relatively expensive.

Here, the light source units 10 in the first lighting fixture 100 and the second lighting fixture 200 respectively emit the first light source 10w that emits the first color illumination light and the second color illumination light. The second light source 10r, and the drive unit generates a first lighting voltage and a second lighting voltage as driving voltages, and the first and second light sources in the first lighting fixture 100 are connected to the first light source 10r. The first lighting device 100 further includes a communication unit 14b that receives a dimming command for instructing dimming and a toning command for instructing toning, and supplies a first lighting voltage and a second lighting voltage. 16, when a command for instructing dimming is received by the communication unit 14 b , first and second dimming signals for instructing the dimming level are given to the driving unit so that the brightness according to the command is obtained. According to the first and second dimming levels. When a command for generating the first and second lighting voltages and instructing the color adjustment is received by the communication unit 14b, the dimming level of the first dimming signal and the first dimming signal are set so as to obtain the illumination color corresponding to the command. You may adjust the ratio with the light control level of 2 light control signals.

Here, the 1st lighting fixture 100 and the 2nd lighting fixture 200 are connected by the wiring 30 which transmits the 1st lighting voltage, and the 1st lighting fixture further includes the brightness of the light source part, and the illumination color. When the control unit 16 receives a command for instructing dimming by the communication unit 14b , the control unit 16 adjusts the brightness to correspond to the command. The first and second dimming signals indicating the dimming levels corresponding to the first and second lighting voltages are output to the drive unit, and the first dimming color is set to the illumination color indicated by the toning data The ratio between the dimming level of the optical signal and the dimming level of the second dimming signal is adjusted, and the second lighting fixture 200 further includes a memory 27 that stores the toning data, The first lighting voltage supplied via the wiring is input and the toning data is input. Second operating voltage to generate the A, and a supplying toning control unit 26 to the second second light source of the luminaire 200 in such that the illumination color shown in the.

Here, the light source unit 10 in the first lighting fixture 100 and the light source unit 10 in the second lighting fixture 200 each include a first light source 10w and the like, a second light source 10r and the like having different emission colors. The drive unit 13 generates, as drive voltages, a first lighting voltage for the first light source 10w and the like, and a second lighting voltage for the second light source 10r and the like. luminaires may be connected by a cable having a substantially three-wire.

Claims (13)

A first lighting fixture;
And at least one second luminaire that illuminates with a drive voltage supplied from the first luminaire.
The first lighting fixture is:
A converter for converting alternating voltage to direct voltage;
A drive unit that converts the DC voltage into the drive voltage corresponding to a dimming level;
A light source unit having a solid-state light emitting element that emits light by the driving voltage;
A control unit that instructs the drive unit to control the light control level,
The second lighting fixture is:
An illumination system including a light source unit that emits light by the driving voltage supplied from the first lighting fixture. The first lighting fixture further includes:
A receiving unit that receives a demand for instructing reduction of power consumption,
The lighting system according to claim 1, wherein when the demand is received by the receiving unit, the control unit controls the driving unit so that the light source unit is dimmed or extinguished. The first lighting fixture further includes:
A rechargeable battery,
A receiving unit for receiving a demand for instructing reduction of power consumption,
The said control part stops the supply of the said DC voltage from the said conversion part to a drive part, when the said demand is received by the said receiving part, The DC voltage is supplied to the drive part from the said storage battery. Lighting system. The lighting system according to claim 3, wherein the control unit prohibits charging of the storage battery except in a first time zone at night. The lighting system according to claim 3 or 4, wherein the control unit ignores the demand except during a second daytime period. The light source sections in the first lighting fixture and the second lighting fixture are respectively a first light source that emits illumination light of a first color and a second light source that emits illumination light of a second color. And
The driving unit generates a first lighting voltage and a second lighting voltage as the driving voltage, and the first and second light sources in the first lighting fixture are supplied with the first and second light sources. Supply each lighting voltage,
The first lighting fixture further includes a communication unit that receives a light control command that instructs light adjustment and a color adjustment command that instructs color adjustment,
The controller is
When a command for instructing dimming is received by the receiving unit, first and second dimming signals for instructing dimming levels are output to the driving unit so as to obtain brightness according to the command. ,
The drive unit generates first and second lighting voltages according to the first and second dimming levels,
When a command for instructing toning is received by the communication unit, a dimming level of the first dimming signal and a dimming level of the second dimming signal so as to obtain an illumination color corresponding to the command. The lighting system according to any one of claims 1 to 5, wherein the ratio is adjusted. The first lighting fixture and the second lighting fixture are connected by a wiring that transmits the first lighting voltage and the second lighting voltage,
The first light source in the second lighting fixture emits light by the first lighting voltage supplied from the first lighting fixture through the wiring,
The lighting system according to claim 6, wherein the second light source in the second lighting fixture emits light by the second lighting voltage supplied from the first lighting fixture via the wiring. The first lighting fixture and the second lighting fixture are connected by a wiring that transmits the first lighting voltage,
The first lighting fixture further includes a modulation unit that superimposes data indicating the illumination color on the first lighting voltage,
The second lighting fixture further includes a demodulator that demodulates data indicating the lighting color from the first lighting voltage supplied from the first lighting fixture,
The first or second lighting voltage supplied from the first lighting device is input, the first lighting voltage and the second lighting voltage are generated according to demodulated data, and the second lighting device is generated. The lighting system of Claim 6 provided with the toning control part supplied to the said 1st and 2nd light source in the inside. The first lighting fixture and the second lighting fixture are connected by a wiring that transmits the first lighting voltage,
The first lighting fixture further includes:
A memory for storing toning data in which the brightness of the light source unit is associated with the illumination color;
When the control unit receives a command for instructing dimming by the receiving unit, the control unit instructs the dimming level corresponding to the first and second lighting voltages so as to obtain brightness according to the command. The first and second dimming signals are output to the drive unit, and the dimming level and the second dimming level of the first dimming signal are set to the illumination color indicated by the toning data Adjust the ratio to the dimming level of the signal,
The second lighting fixture further includes a memory for storing the toning data,
The first lighting voltage supplied from the first lighting fixture via the wiring is input, the second lighting voltage is generated so that the lighting color indicated in the toning data is obtained, and the second lighting voltage is generated. The lighting system according to claim 6, further comprising: a toning control unit configured to supply a second light source in the lighting fixture. The first lighting fixture further includes a human sensor that detects the presence or absence of a person near the first lighting fixture or near the second lighting fixture,
The lighting system according to any one of claims 1 to 9, wherein the control unit controls the driving unit so that the light source unit is dimmed or extinguished when the human sensor detects the absence of a person. . The lighting system according to claim 10, wherein the control unit prohibits detection of the human sensor except in a specific time zone. The drive unit converts the DC voltage into one of the drive voltage having a voltage value corresponding to a dimming level, and the drive voltage pulse-modulated according to the dimming level,
The lighting system according to any one of claims 1 to 5, 8, and 9, wherein the first lighting fixture and the second lighting fixture are connected by a cable having substantially two wires. The light source unit in the first lighting fixture and the light source unit in the second lighting fixture each include a first light source and a second light source having different emission colors,
The driving unit generates, as the driving voltage, a first lighting voltage for the first light source and a second lighting voltage for the second light source,
The lighting system according to any one of claims 1 to 5, wherein the first lighting fixture and the second lighting fixture are connected by a cable having substantially three wires.

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