JP2011009011A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system automatically selecting dimming modulation data by a frequency of a dimming control signal, and eliminating botheration in construction.SOLUTION: The lighting system 10 dimming light output of a light source in accordance with a dimming control signal S being as a pulse width modulation signal of a duty ration matched with a dimming level of a dimmer 2 output from that 2, includes a memory part 4 memorizing a plurality of dimming modulation data modulating the dimming control signal S so as to have a predetermined dimming curve relation between a light output of an LED light source 1 as a light source and a duty ratio of the dimming control signal S, a selection part 3 selecting specific dimming modulation data from the plurality of dimming modulation data memorized at the memory part 4 by a period of the dimming control signal S, and a lighting circuit part 5 dimming and lighting the LED source 1 by a control signal by modulating the dimming control signal S based on the dimming modulation data selected at the selection part 3.

Description

  The present invention relates to a lighting device that dims a light source based on a dimming control signal from a dimmer and turns it on.

  2. Description of the Related Art Conventionally, there has been provided an illuminating device that dims the light output of a light source in response to a dimming control signal output from a dimmer to obtain a desired light amount. For example, the lighting device receives a dimming control signal that is output from the dimmer and is a pulse width modulation signal (hereinafter referred to as a PWM signal) having a duty ratio corresponding to the dimming level of the dimmer. The light output of the light source is dimmed and turned on.

  By the way, there are various types of light sources used in lighting devices such as incandescent lamps, fluorescent lamps that are discharge lamps, light emitting diodes (hereinafter referred to as LEDs), and organic EL elements (Organic Electro Luminescence). The LED is a semiconductor light emitting element, and a semiconductor material having different optical characteristics, electrical characteristics, and the like depending on light emitted from the LED (for example, R (red light) G (green light) B (blue light)) is used. There is a case. Furthermore, in the configuration of the lighting device that controls the power supplied to the light source by receiving a dimming control signal from the outside and dimmes the light output, for example, when using an inverter circuit or for controlling an AC bidirectional switch May be used. In such a case, even if the dimming control signal output from the dimmer is simply input to the lighting device, the light output of the light source may not be dimmed as desired with respect to the dimming level of the dimmer.

  Therefore, in the illuminating device 10 'shown in FIG. 5, the light output of the LED light source 1 that is the light source of the dimming control signal S from the dimmer 2 and the duty ratio of the dimming control signal S are substantially linear. And a lighting circuit unit 5 that dims and lights the LED light source 1 with a control signal modulated by the modulator 8 (for example, Patent Document 1).

  As a result, the illuminating device 10 ′ uses the light output of the LED light source 1 having a non-linear current-voltage characteristic and the light control from the light control device 2 even when the light control device 2 used for light control of the incandescent lamp is used. The light output of the LED light source 1 is modulated with respect to the dimming level of the dimmer 2 by modulating the dimming control signal S by the modulator 8 so that the dimming curve of the duty ratio of the light control signal S is substantially linear. Can be dimmed linearly.

  The LED light source 1 provided in the illumination device 10 ′ is connected in series with the DC power source 7 through the lighting circuit unit 5. Further, the smoothing capacitor of the lighting device 10 ′ converts the dimming control signal S input from the dimmer 2 to the lighting device 10 ′ into a DC voltage proportional to the duty ratio of the dimming control signal S. The lighting circuit unit 5 of the illumination device 10 ′ lights the LED light source 1 based on the converted DC voltage.

JP 2003-157986 A

  By the way, the dimming control signal S output from the dimmer 2 usually changes only the duty ratio of the PWM signal in accordance with the dimming level of the dimmer 2, and the amplitude and period of the dimmer 2 is dimmed. It is constant every time.

  In the illuminating device 10 ′ described above, a plurality of dimming curves are stored in advance for each type of the light source when the dimming device 2 and the type of the light source are taken into account to correspond to the dimming control signal S. It is conceivable to switch to a dimming curve corresponding to the dimmer 2 or the type of the light source. In this case, the illumination device 10 ′ has to switch the dimming curve with a dip switch or the like so as to obtain a dimming curve suitable for the type of the light source. Similarly, the illuminating device 10 ′ may have a case where it is desired to change the light output characteristics for each use of the illuminating device. The light curve must be switched.

   Therefore, it is necessary for the installer of the lighting device 10 ′ to perform the installation considering the dimmer 2 and the type of the light source, and the installation of the lighting device 10 ′ is troublesome. Further, if the lighting device 10 ′ is incorrectly installed, a desired dimmed light output may not be obtained from the lighting device 10 ′.

  This invention is made | formed in view of the said reason, The objective is to provide the illuminating device which eliminated the troublesomeness at the time of construction irrespective of the classification, application, etc. of the light source used.

  The invention of claim 1 illuminates the light output of the light source in accordance with a dimming control signal, which is a pulse width modulation signal with a duty ratio output from the dimmer and associated with the dimming level of the dimmer. A device for storing a plurality of dimming modulation data for modulating the dimming control signal so that the light output of the light source and the duty ratio of the dimming control signal have a predetermined dimming curve relationship A selection unit that selects specific dimming modulation data from the plurality of dimming modulation data stored in the storage unit according to a cycle of the dimming control signal, and the dimming selected by the selection unit And a lighting circuit unit that dims the light source with a control signal obtained by modulating the dimming control signal based on light modulation data.

  According to this invention, dimming modulation data according to the type of the light source and the use of the lighting device is automatically selected from a plurality of dimming conversion data according to the cycle of the dimming control signal output from the dimmer. Then, the light source can be dimmed and turned on by the control signal modulated based on the selected dimming modulation data. Therefore, it is possible to eliminate the trouble of individually modulating and setting the dimming control signal in order to obtain the light output characteristics according to the type of the light source and the use of the lighting device during construction of the lighting device.

  According to a second aspect of the present invention, in the first aspect of the invention, the type of the specific dimming modulation data selected by the selection unit from the plurality of dimming modulation data stored in the storage unit is displayed. A display portion is provided.

  According to this invention, since the display unit that displays the type of the dimming modulation data selected by the selection unit is provided, the lighting control state based on the dimming modulation data automatically selected by the lighting device is confirmed. can do.

  According to a third aspect of the present invention, in the first and second aspects of the present invention, at least one of the dimming modulation data stored in the storage unit is an optical output of the light source and the dimming control signal. It is the data which modulates this duty ratio so that it may become a nonlinear light control curve.

  According to this invention, it includes data for modulating the light output of the light source so as to be a non-linear dimming curve with respect to the duty ratio of the dimming control signal, and the dimming modulation data is used to select the light output. By changing the minimum adjustment width (hereinafter referred to as dimming resolution) of the light output of the light source, the dimming speed of the light source and the controllability in the dimming of the light source can be changed.

  According to the first aspect of the present invention, the specific dimming modulation data is automatically selected from the plurality of dimming modulation data stored in the storage unit according to the cycle of the dimming control signal, and the selected dimming modulation is selected. By dimming the light source with the control signal modulated based on the data and turning it on, it is troublesome to individually modulate and set the dimming control signal according to the type of the light source and the use of the lighting device during construction of the lighting device There is an effect that it is possible to provide a lighting device capable of achieving the above.

The illumination control system using the illuminating device of this embodiment is shown, (a) is a block diagram of an illumination control system, (b) is principal part explanatory drawing of an illuminating device. It is a model explanatory drawing of the light control device in an illumination control system same as the above. It is explanatory drawing explaining the structure of the illuminating device in an illumination control system same as the above. It is the dimming curve of the dimming modulation data used for the illumination control apparatus same as the above. It is a block diagram of the illumination control system using the illuminating device shown for reference.

(Embodiment 1)
Hereinafter, the illumination device of the present embodiment will be described with reference to FIG.

  The lighting device 10 shown in FIG. 1A of the present embodiment is a rectangular-wave dimming control signal that is a PWM signal having a duty ratio that is output from the dimmer 2 and is associated with the dimming level of the dimmer 2. In accordance with S, the light output of the LED light source 1 (see FIG. 3) in which a plurality of LED groups each having a plurality of LEDs connected in series as light sources are connected in parallel is dimmed. In particular, the lighting device 10 includes a plurality of dimming modulation data for modulating the dimming control signal S so that the light output of the LED light source 1 and the duty ratio of the dimming control signal S have a predetermined dimming curve relationship. (3 in FIG. 1B) the storage unit 4 to be stored, and the specific dimming modulation data from a plurality of the dimming modulation data stored in the storage unit 4 according to the cycle of the dimming control signal S. A selection unit 3 to select, and a lighting circuit unit 5 that dims and lights the LED light source 1 with a control signal obtained by modulating the dimming control signal S based on the dimming modulation data selected by the selection unit 3; have. In addition, the lighting device 10 of the present embodiment includes a display unit 6 that displays the type of specific dimming modulation data selected by the selection unit 3 from the plurality of dimming modulation data stored in the storage unit 4. I have.

  The lighting device 10 according to the present embodiment receives the dimming control signal S output from the dimmer 2 to the lighting device 10 by unidirectional transmission as an initial setting at the time of construction, as shown in FIG. 1B. In response to the cycle of the dimming control signal S received by the selection unit 3, the specific specification of the storage unit 4 is selected so that the specific dimming modulation data is selected from the plurality of dimming modulation data stored in the storage unit 4. The dimming control signal S is automatically output to the input port. Here, the dimming modulation data stored in advance in the storage unit 4 stores a value corresponding to the dimming control signal S as a data table as a parameter for correcting the dimming control signal S as a data table. The shape of the dimming curve indicating the light output of the LED light source 1 with respect to the duty ratio of the dimming control signal S can be changed. The selection unit 3 may include storage means for storing the input port of the storage unit 4 corresponding to the cycle of the dimming control signal S selected as the initial setting when the lighting device 10 is constructed. The input port of the storage unit 4 corresponding to the cycle of the dimming control signal S may be selected again each time the dimming control signal S is input to the lighting device 10 from 2.

  The lighting device 10 automatically adjusts the relationship between the duty ratio of the dimming control signal S and the light output of the LED light source 1 so as to have a predetermined dimming curve relationship according to the cycle of the dimming control signal S. The light control signal S is modulated. Therefore, the illuminating device 10 turns on the LED light source 1 at a dimming level automatically modulated with respect to the dimming level of the dimmer 2 indicated by the dimming control signal S output from the dimmer 2. be able to.

  Hereinafter, an illumination control system using the illumination device 10 of the present embodiment will be described with reference to FIGS. 2 and 3. First, the dimmer 2 in the illumination control system 100 of the present embodiment will be described.

  The dimmer 2 in the illumination control system 100 shown in FIG. 2 includes a dimming operation terminal 21, a dimming control terminal 22, and a relay control terminal 23, and is dimmed by a two-wire signal line Ls. The operation terminal 21, the dimming control terminal 22, and the relay control terminal 23 are multidrop connected.

  The dimming operation terminal 21 includes an up switch Su for instructing an increase in the light output of the illuminating device 10, a down switch Sd for instructing a decrease in the light output, and an on instructing on and off of the light source of the illuminating device 10. -It has an off switch Sa. The dimming operation terminal 21 includes an operation check lamp Da including two indicator lamps indicating whether the light source of the lighting device 10 is turned on or off in response to the operation of the on / off switch Sa. And a level indicator Db in which a plurality of indicator lamps for displaying the dimming level in a bar graph are arranged in a straight line.

  The dimming control terminal 22 is a PWM signal having a duty ratio associated with the dimming level instructed from the dimming operation terminal 21 when the dimming operation terminal 21 instructs to increase or decrease the light output. A dimming control signal S is output, and the dimming level of the dimming control signal S is automatically changed until the dimming operation terminal 21 instructs to stop the change of the light output. When the up switch Su or down switch Sd is pressed, the dimming control terminal 22 is instructed to start the change of the dimming level and the direction of the change, and when the push operation is released, the stop of the change of the dimming level is instructed. Is done.

  When the dimming control terminal 22 receives a dimming instruction from the dimming operation terminal 21, the dimming control terminal 22 synchronizes with a built-in oscillator and outputs a PWM signal having a specific frequency to a duty ratio corresponding to the dimming level (here, on (Duty ratio) dimming control signal S. The dimming control terminal 22 of the dimmer 2 of the present embodiment can output a PWM signal whose frequency of the dimming control signal S is 1 kHz, for example. The dimmer 2 may change the frequency of the dimming control signal S to 1 kHz, 0.5 kHz, 0.1 kHz, or the like by exchanging the dimming control terminal 22.

  The relay control terminal 23 has a built-in relay in which a relay contact is inserted into the power supply path to the LED light source 1 of the lighting device 10. The relay control terminal 23 outputs a load control signal for turning on / off the LED light source 1 of the lighting device 10 according to the signal received from the dimming operation terminal 21.

  In the dimming operation terminal 21, when the user operates any of the on / off switch Sa, the down switch Sd, and the up switch Su, the dimming operation terminal 21 is connected to the relay control terminal 23 or the dimming control. A signal is transmitted to the terminal device 22. Thereby, the relay control terminal device 23 drives the relay to control the lighting device 10, and the dimming control terminal device 22 generates the dimming control signal S.

  The dimming control terminal 22 changes the dimming level from the time when the start of changing the dimming level of the LED light source 1 in the lighting device 10 is instructed, and the dimming level when the end of changing the dimming level is instructed. Stop changing.

  The lighting device 10 of the present embodiment is connected to the commercial power supply AC via the relay contact of the relay control terminal 23 and also connected to the dimming control terminal 22 as shown by the lighting control system 100 in FIG. ing. The lighting device 10 and the commercial power source AC and the relay control terminal 23 are connected by a load line Lp. In addition, the lighting device 10 and the dimming control terminal 22 are connected by a dimming control signal line Ld.

  The dimming control terminal 22 and the lighting device 10 of the dimmer 2 are connected to the dimming control signal line Ld in order to prevent the polarity of the dimming control signal line Ld from being reversed when the lighting device 10 is installed. Ld may be connected via a dimming signal relay circuit (not shown) including a photocoupler.

  In addition, the dimming control terminal 22 and the lighting device 10 of the dimmer 2 not only transmit the dimming control signal S through the dimming control signal line Ld, but also the dimming control signal S from the dimmer 2. May be transmitted superimposed on the power supply voltage from the commercial power supply AC. In this case, the illumination device 10 includes a high-pass filter circuit and the like, and the superposed dimming control signal S may be extracted by the high-pass filter circuit. Thereby, the light control signal line Ld which connects between the light controller 2 and the illuminating device 10 with a wire can be reduced. Similarly, the dimming control signal S may be transmitted between the dimmer 2 and the lighting device 10 using electromagnetic waves such as infrared rays without using the dimming control signal line Ld that is wired. For example, an infrared remote controller capable of transmitting a dimming control signal S associated with the dimming level of the dimmer 2 by infrared rays is used as the dimmer 2, and the lighting device 10 receives infrared rays transmitted from the infrared remote controller. What is necessary is just to provide the light-receiving sensor which can be.

  Next, the illumination device 10 in the illumination control system 100 of the present embodiment will be described in detail with reference to FIG.

  The illuminating device 10 includes, as the light source, an LED light source 1 in which a plurality of LED groups 12 each including a plurality of white LEDs 11 that are semiconductor light emitting elements and emit white light are connected in series (in this case, two rows). And a lighting circuit section 5 for lighting the LED light source 1.

The white LED 11 is, for example, a semiconductor light-emitting element made of a GaN-based compound semiconductor in which a light-emitting layer that emits blue light contains In, and a yellow light that complements a part of blue light emitted from the semiconductor light-emitting element. A combination of phosphors such as Y ₃ Al ₅ O ₁₂ : Ce or Tb ₃ Al ₅ O ₁₂ : Ce that converts wavelength into light can be used. The LED light source 1 includes not only the white LED 11 but also a blue LED made of a GaN compound semiconductor in which the light emitting layer contains In, and a GaN compound semiconductor having a higher In composition ratio in the light emitting layer than the blue LED. You may make it obtain mixed color light, such as white light, using green LED and red LED which a light emitting layer consists of AlInGaP.

  As the light source used in the illumination device 10 of the present embodiment, not only the LED light source 1 to which a plurality of white LEDs 11 are connected, but also a single white LED 11 may be used. Further, as the light source used in the illumination device 10, in addition to the white LED 11, various light sources such as an incandescent lamp, a fluorescent lamp as a discharge lamp, and an organic EL element can be used.

  As shown in FIG. 3A, the lighting circuit unit 5 for lighting the LED light source 1 includes a rectifier circuit 51 including a diode bridge circuit that full-wave rectifies alternating current from the commercial power supply AC and a predetermined pulsating output. A constant voltage circuit 52 that smoothes the voltage and supplies it to the LED light source 1 and a control signal VCTL obtained by modulating the dimming control signal S from the storage unit 4 are supplied from the constant voltage circuit 52 to each LED group 12 of the LED light source 1. And a current control circuit 53 for controlling the current.

  The current control circuit 53 of the lighting circuit unit 5 is controlled by a control signal VCTL in which the transistors Q2 and Q2 provided for each LED group 12 are modulated with the dimming control signal S by the storage unit 4. In the current control circuit 53, the control signal VCTL from the storage unit 4 is connected so as to be applied to the collector and base of the npn transistor Q1 via the resistor R0. The emitter of the transistor Q1 is connected to GND through a resistor R1. The npn transistors Q2 and Q2 provided corresponding to each LED group 12 constitute a current mirror circuit with the transistor Q1, respectively. Therefore, the bases of the transistors Q2 and Q2 are connected to the collector and base of the transistor Q1, the collectors of the transistors Q2 and Q2 are connected to the cathode of the white LED 11 in the final stage of each LED group 12, and the emitters of the transistors Q2 and Q2 are Are connected to GND via a resistor R2. A constant voltage from the constant voltage circuit 52 is applied to the anode side of each LED group 12. In the lighting circuit unit 5, the control signal VCTL from the storage unit 4 serves as a reference voltage for the current mirror circuit, and the current flowing through the LED light source 1 is controlled in accordance with the reference voltage.

  In the lighting circuit unit 5, the current supplied from the current control circuit 53 to the LED light source 1 can be controlled to be constant. In addition to connecting a power source with a smoothed flow, a DC power source such as a storage battery may be connected. When a DC power source is used, an equivalent function can be realized even if the rectifier circuit 51 of the lighting circuit unit 5 is omitted. When a DC power source is connected to the lighting circuit unit 5 as a power source of the lighting device 10, the lighting circuit unit 5 includes a reverse connection prevention diode so that no current flows through the lighting circuit unit 5 when the DC power source is reversely connected. Alternatively, it is more preferable to provide the rectifier circuit 51 so that an equivalent function can be achieved regardless of the polarity of the DC power supply. The lighting circuit unit 5 can also correspond to both AC and DC power sources by providing the rectifier circuit 51.

  The lighting circuit unit 5 turns on the light source used in the lighting device 10, and various configurations differ depending on the light source and the power source. When the LED light source 1 is used as the light source, the lighting circuit unit 5 may simply turn on the LED light source 1 by flowing the control signal VCTL via a current limiting resistor. Further, when a discharge lamp such as a fluorescent lamp is used as the light source, it may be lit using a ballast that is driven based on a modulated control signal VCTL.

  The selection part 3 in the illuminating device 10 of this embodiment should just discriminate | determine the period of the light control signal S output from the dimmer 2, and can output it to the input port of the memory | storage part 4 according to a period. Therefore, a plurality of filter circuits capable of discriminating the period of the dimming control signal S may be provided, and each filter circuit may be configured to output to a corresponding input port of the storage unit 4 via an individual output port. . Further, the selection unit 3 may measure and discriminate the cycle of the dimming control signal S by a time measuring unit including a transmission circuit and a comparison circuit.

  FIG. 3B shows a configuration of a main circuit of the storage unit 4 provided in the lighting device 10 of the present embodiment.

  The dimming control signal S input to the input port of the storage unit 4 selected by the selection unit 3 is divided by the resistors R21 and R22 shown in FIG. 3B and input to the base of the npn transistor Q21. The The emitter of the transistor Q21 is connected to GND, and the collector is connected to the power supply line of the constant voltage circuit unit 52 via resistors R23 and R24. The connection point of the resistors R23 and R24 is connected to the base of the npn transistor Q22. The emitter of the transistor Q22 is connected to the power supply line of the constant voltage circuit unit 52, and the collector is connected to GND via the resistors R25 and R26. An integrating capacitor C21 is connected in parallel to the resistor R26, and the charging voltage is applied to the non-inverting input terminal of the operational amplifier 15.

  In addition, a series circuit of resistors R27, R28, and R29 is connected between the power supply line and the GND line of the constant voltage circuit unit 52, and a connection point between the resistors R27 and R28, a resistor R23, and a transistor Q21. Between the connection points, a diode D21 is provided with the resistors R27 and R28 side as anodes, and the connection point of the resistors R28 and R29 is connected to the base of an npn transistor Q23. The emitter of the transistor Q23 is connected to GND, and the collector is connected to the connection point of the resistors R25 and R26 and the non-inverting input terminal of the operational amplifier 15 via the resistor R30.

  Therefore, when the modulated dimming control signal S is at a high level, the transistor Q21 is turned on, whereby the base current of the transistor Q23 via the resistor R27 is bypassed by the transistor Q21, the transistor Q23 is turned off, and the transistor Q22 Current flows, the transistor Q22 is turned on, and the capacitor C21 is charged. On the other hand, when the modulated dimming control signal S is at a low level, the transistor Q21 is turned off, whereby the base current of the transistor Q23 is supplied via the resistors R27 and R28, and the transistor Q23 is turned on. The base current of the transistor Q22 is lost, the transistor Q22 is turned off, and the capacitor C21 is discharged.

  Therefore, the charging voltage of the capacitor C21 increases as the duty ratio of the modulated dimming control signal S increases. In the storage unit 4, the charge voltage of the capacitor C <b> 21 is amplified by the operational amplifier 15 and output as a control signal VCTL that serves as a reference voltage for the current control circuit 53. The voltage level of the control signal VCTL at a duty ratio of 100% is a value obtained by dividing the constant voltage by the resistors R25 and R26, and can be set to an arbitrary value by changing the divided voltage value. The voltage level of the control signal VCTL can be linearly changed from the voltage at the duty ratio of 100% to 0 V corresponding to the duty ratio of 0%. In the storage unit 4, a plurality of the above-described main circuit circuits having different values of the resistors 25 and 26 for each output port from the selection unit 3 may be provided.

  Here, the selection unit 3 is provided with a microcomputer (not shown), and the resistance value is stored in the storage unit 4 by a combined resistance of a plurality of resistors instead of the resistors 25 and 26. It can also be configured to be variable according to the light control curve. Thereby, the microcomputer of the selection unit 3 continuously changes the resistance value of the combined resistance according to the cycle of the dimming control signal S, and outputs the control signal VCTL based on the dimming curve from the storage unit 4. You can also.

  The selector 3 determines the frequency in the dimming control signal S with the duty ratio output from the dimmer 2 and associated with the dimming level of the dimmer 2 as shown in FIG. Accordingly, a plurality of dimming modulation data for modulating the dimming control signal S so that the light output of the LED light source 1 as the light source and the duty ratio of the dimming control signal S have a predetermined dimming curve relationship is stored in advance. A signal is transmitted to each input port of the storage unit 4 in accordance with the cycle of the dimming control data so as to select specific dimming modulation data from the stored storage unit 4.

  In the storage unit 4 of the present embodiment, in order to modulate the dimming control signal S, the parameters of the dimming curve for how to modulate the duty ratio of the dimming control signal S in the storage unit 4 are stored in the data table. I remember it in the form. In addition, the storage unit 4 extracts the duty ratio of the dimming control signal S input based on the data table selected by the selection unit 3, compares it with the data table, and outputs the modulated dimming control signal S output from the data table. The duty ratio is determined. The storage unit 4 can set an arbitrary input / output relationship by storing a plurality of such data tables and modulating the dimming control signal S based on the data table selected by the selection unit 3. What is necessary is just to comprise using various semiconductor memory devices, such as RAM, in order to memorize | store a plurality of said light modulation modulation data in the memory | storage part 4 of the illuminating device 10. FIG. In order to modulate the dimming control signal S, not only when the data table stored in the storage unit 4 is used, but instead of the data table, the dimming control signal S is stored as a predetermined function corresponding to the dimming curve. Also good.

  Hereinafter, dimming modulation data used in the illumination device 10 of the present embodiment will be described with reference to FIG. In FIG. 4, the light output characteristic of the light source with the light output on the vertical axis and the duty ratio of the light control signal S on the horizontal axis is shown as a light control curve.

  In the illuminating device 10 of the present embodiment, the storage unit 4 that stores a plurality of data tables for dimming modulation data stores, for example, the light output of the LED light source 1 as the light source and the dimming control signal S shown in FIG. Are stored in three types of data tables for modulating the dimming control signal S so as to have a predetermined dimming curve relationship. The storage unit 4 transfers the control signal VCTL modulated by the data table corresponding to the input port input from the selection unit 3 to the lighting circuit unit 5. The lighting circuit unit 5 controls the lighting of the LED light source 1 so that the dimming control signal S input to the lighting device 10 outputs a light output corresponding to the dimming level modulated by the dimming modulation data.

  The illuminating device 10 is interlocked with, for example, a separately provided optical sensor, and the LED light source 1 of the illuminating device 10 is dimmed in consideration of extraneous light such as daylight, and is automatically corrected to a preset design illuminance. Therefore, it may be used for energy-saving lighting that contributes to reducing energy consumption. In the application of energy saving lighting in such an illuminating device 10, for example, the duty ratio of the dimming control signal S as shown in FIG. What is necessary is just to set it as the light control curve which shows the characteristic that the light output of the LED light source 1 increases linearly in proportion to the decrease.

  In addition, the lighting device 10 can be dimmed in consideration of the resolution and sensitivity of the human eye with respect to the illumination target in the application of effect lighting in a store display, stage, studio, etc., for example, FIG. As shown in FIG. 4, a dimming curve showing a characteristic that the light output increases in proportion to the power of the increase in the duty ratio of the dimming control signal S can be obtained.

  Moreover, the illuminating device 10 uses the LED light source 1, for example, in the shape of the light control curve shown in FIG.4 (c) so that light control can be performed for the use of the pseudo incandescent lamp which can obtain the light emission characteristic resembling an incandescent lamp. You can also

  Moreover, the dimmer 2 can be selected according to a use according to the illuminating device 10. FIG. For example, the energy-saving dimmer 2 is a dimmer 2 equipped with an optical sensor. For use in production lighting, for example, a dimmer 2 that can be set differently depending on an office scene such as a conference or a presentation. An optical device 2 is mentioned.

  In the illumination control system 100 of the present embodiment, the dimmer 2 transmits a dimming control signal S having a different frequency depending on applications such as effects lighting and energy-saving lighting. For example, the dimmer 2 transmits the dimming control signal S to the illumination device 10 so that the frequency is 1 kHz for energy-saving lighting, 0.5 kHz for production lighting, and 0.1 kHz for pseudo-incandescent lamp use. The illuminating device 10 can make the space effect which selected the dimming curve selected by the dimming control signal S according to the use transmitted from the light source and the dimmer 2 to be turned on. Since the illuminating device 10 of this embodiment selects a dimming curve based on the dimming control signal S transmitted from the dimmer 2, it becomes possible to simplify construction.

  In addition, the illuminating device 10 of this embodiment is provided with the display part 6 so that the dimming control signal S automatically selected by the illuminating device 10 can be recognized from the outside. For example, the display unit 6 turns on a red LED that emits red light in the case of the dimming curve of FIG. 4A, and emits green light in the case of the dimming curve of FIG. 4B. What is necessary is just to comprise so that green LED may be lighted and the blue LED which emits blue light may be lighted if it is the light control curve of FIG.4 (c). Such a display unit 6 is not necessarily provided in the fixture body of the lighting device 10 as shown in FIG. 2 as long as the light control signal S automatically selected by the lighting device 10 can be recognized from the outside. You may arrange | position in a part of housing | casing which comprises.

  Moreover, the illuminating device 10 is comprised so that the light control speed with respect to the change of a light control level can also be changed according to a lighting use. For example, in the case of energy-saving lighting, it is necessary to improve the light output of the light source as soon as possible when the external light suddenly disappears. In addition, fine dimming control is required for use in production lighting. Therefore, the lighting device 10 increases the minimum light output adjustment width (hereinafter referred to as dimming resolution) with respect to the dimming level to increase the dimming speed in energy saving lighting applications. In addition, the lighting device 10 has a dimming resolution lower than that of the energy-saving lighting in the use of the effect lighting, thereby improving the controllability of the dimming. Thereby, the illuminating device 10 of this embodiment can perform the space production | presentation of the illumination according to the classification and the illumination use of the said light source, and can be easily constructed.

1 LED light source
2 dimmer 3 selection unit 4 storage unit 5 lighting circuit unit 6 display unit 10 lighting device

Claims (3)

A lighting device for dimming the light output of a light source in accordance with a dimming control signal that is a pulse width modulation signal with a duty ratio that is output from a dimmer and associated with a dimming level of the dimmer,
A storage unit for storing a plurality of dimming modulation data for modulating the dimming control signal so that the light output of the light source and the duty ratio of the dimming control signal have a predetermined dimming curve relationship; A selection unit that selects specific dimming modulation data from the plurality of dimming modulation data stored in the storage unit according to the period of the light control signal, and based on the dimming modulation data selected by the selection unit And a lighting circuit unit that dims the light source with a control signal obtained by modulating the dimming control signal.   2. The display unit according to claim 1, further comprising a display unit configured to display a specific type of the dimming modulation data selected by the selection unit from the plurality of dimming modulation data stored in the storage unit. Lighting device.   At least one of the dimming modulation data stored in the storage unit is data for modulating the light output of the light source and the duty ratio of the dimming control signal so as to become a non-linear dimming curve. The illuminating device according to claim 1 or 2.

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