JP2014216855A - Light fixture and illumination system using the light fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light fixture and an illumination system using the light fixture capable of simplifying a remote control device.SOLUTION: An optical signal representing own ID information is transmitted for a predetermined period time T1 from a point when the power is turned ON t0. Comparing the case when the optical signal is transmitted only when a predetermined radio signal requesting the ID information is received from the remote control device, since no push button etc. is required for operation to transmit the predetermined radio signal on the remote control device, the remote control device can be simplified.

Description

  The present invention relates to a lighting fixture and a lighting system using the lighting fixture.

  Conventionally, there has been provided a lighting fixture that operates in response to a radio signal transmitted from a remote control device. The remote control device has an operation unit that accepts an operation input by, for example, a push button switch, and transmits a radio signal corresponding to the operation input applied to the operation unit.

  When a plurality of lighting fixtures are arranged close to each other, in order to control only a desired lighting fixture, each lighting fixture has unique identification information (what is called ID or address) in advance for each lighting fixture. It is remembered. The wireless signal includes identification information of a lighting fixture to be controlled, and each lighting fixture is controlled by a wireless signal including its own identification information.

  Here, in order to be able to control the lighting fixture by the remote control device, the remote control device needs to store the identification information of the lighting fixture in advance.

  As a method for inputting the identification information of the lighting fixture to the remote control device, a method of transmitting an optical signal indicating the identification information from the lighting fixture to the remote control device is conceivable (for example, see Patent Document 1). The light of the light source for illumination can be used as the optical signal medium.

  If an optical signal is used as described above, the operation for inputting identification information can be simplified as compared with the case where identification information is manually input to the remote control device.

JP 2010-153100 A

  Conventionally, the timing at which the luminaire transmits the above-described optical signal is the timing at which a predetermined radio signal (communication control signal) transmitted by the remote control device when a predetermined operation input is applied to the remote control device. It was.

  However, in the above-described conventional configuration, the remote control device needs to be provided with a mode changeover switch or the like for receiving the predetermined operation input, which complicates the remote control device.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a lighting fixture capable of simplifying a remote control device and a lighting system using the lighting fixture.

  The luminaire of the present invention includes a light source driving circuit for driving an electrical light source, a receiving circuit for receiving a wireless signal, and a wireless signal including identification information assigned in advance among the wireless signals received by the receiving circuit. And a control circuit for controlling the light source drive circuit, and the control circuit controls the light source drive circuit to transmit an optical signal indicating the identification information for a predetermined time after the power is turned on. A transmission operation is performed.

  In the above luminaire, it is preferable that the control circuit periodically performs the light transmission operation during a period in which the light source driving circuit lights the light source.

  In the lighting apparatus, the control circuit controls the light source driving circuit so that a peak value of a light beam of the light source is lower than a light beam after the light transmission operation is finished during the light transmission operation. It is desirable to do.

  The lighting system of the present invention includes any one of the above-described lighting fixtures and a remote control device, and the remote control device receives an operation input that receives an operation input, a transmission unit that transmits the radio signal, and the optical signal. An optical receiving unit, a storage unit for storing identification information indicated in the optical signal received by the optical receiving unit, an operation input received by the operation unit, and an identification information stored in the storage unit And a control unit that controls the transmission unit so as to transmit a corresponding radio signal.

  According to the present invention, it is not necessary to provide the remote control device with a push button or the like for the operation for transmitting the wireless signal as compared with the case of transmitting an optical signal in response to the wireless signal from the remote control device. Simplification is possible.

It is explanatory drawing which shows an example of the relationship between the on-off state of the switching element Q1, and the input current I1 to a light source in embodiment of this invention. It is a block diagram which shows the illumination system using the same as the above. It is explanatory drawing which shows the example same as the above, (a) (b) shows a respectively different example. It is explanatory drawing which shows the example of the remote control device used with the same as the above. It is a circuit block diagram which shows the same as the above.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIGS. 2-4, the lighting fixture 1 of this embodiment is fixed to construction surfaces, such as the ceiling surface 3, and comprises an illumination system with the remote control apparatus 2 carried by the user. The luminaire 1 may be directly attached to the ceiling surface 3 as shown in FIG. 3 (a), or may be embedded holes (not shown) provided in the ceiling surface 3 as shown in FIG. 3 (b). May be embedded and fixed.

  The luminaire 1 includes an electrical light source 10 and a light source driving circuit 11 that drives the light source 10. The light source 10 in the present embodiment is composed of a light emitting diode array. As shown in FIG. 5, the light source driving circuit 11 includes a known AC-DC converter 111 that converts AC power input from an external AC power supply 4 into DC power having a predetermined voltage. The AC-DC converter 111 is, for example, a combination of a diode bridge and a known boost converter also called a PFC circuit or a boost chopper circuit. The light source driving circuit 11 includes a known buck converter 112 that steps down the output voltage of the AC-DC converter 111 and inputs the voltage to the light source 10. The buck converter 112 is feedback-controlled so that, for example, the output current (that is, the input current to the light source 10) I1 is constant. Note that the AC-DC converter 111 is omitted when a DC power source such as a battery is used as the power source. Further, in place of the buck converter 112, other known DC-DC converters such as a flyback converter and a Cuk converter may be used.

  The lighting fixture 1 also includes a receiving circuit 12 that receives a radio signal transmitted from the remote control device 2 and a control circuit 13 that controls the light source driving circuit 11 in accordance with the radio signal received by the receiving circuit 12. Each luminaire 1 is assigned unique identification information (also called ID or address) and stored in the control circuit 13. The wireless signal includes at least one piece of identification information of the destination lighting fixture 1. The control circuit 13 operates according to only the radio signal including the identification information among the radio signals received by the receiving circuit 12. The above radio signal is, for example, a radio wave as a medium. Since the receiving circuit 12 and the control circuit 13 can be realized by a well-known technique, detailed illustration and description thereof will be omitted. As the operation in accordance with the wireless signal, it is possible to change the light output of the light source 10 in addition to turning on and off the light source 10. The change of the light output of the light source 10 is achieved by changing the target value of the output current I1 of the buck converter 112, for example. In addition, when a plurality of light sources 10 each having a different light color are provided and a back converter 112 is provided for each light source 10, the output of each back converter 112 is individually changed, so that the entire color mixture of the plurality of light sources 10 is achieved. It is also possible to change the light color.

  The control circuit 13 includes a first control unit 131 that performs feedback control so that the output voltage of the AC-DC converter 111 is constant, a second control unit 132 that controls the buck converter 112, and a storage unit 134 that stores identification information. With.

  The remote control device 2 includes an operation unit 21 that receives an operation input, a transmission unit 22 that transmits a wireless signal, and a storage unit 23 that stores identification information. In addition, the remote control device 2 includes a control unit 24 that controls the transmission unit 22 to transmit a radio signal corresponding to the operation input received by the operation unit 21 and the identification information stored in the storage unit 23. Furthermore, the remote control device 2 includes a display unit 25 that performs display according to the operation input received by the operation unit 21. The display unit 25 is made of, for example, a known liquid crystal panel. The operation unit 21 may be configured by using a known so-called touch panel that is structurally integrated with the display unit 25, or may be configured by using another known input device such as a push button switch. Furthermore, as the storage unit 23, a known nonvolatile memory can be used. Since the control unit 24 can be realized by a well-known technique using, for example, a microcomputer, detailed illustration and description thereof are omitted.

  In addition, the remote control device 2 includes an optical receiver 26 that receives an optical signal using the light from the light source 10 as a medium. Such an optical receiver 26 may be realized using a light receiving element such as a photodiode, or may be realized using an imaging element such as a CMOS image sensor. In any case, since the optical receiver 26 can be realized by a well-known technique, detailed illustration and description are omitted.

  As said remote control apparatus 2, you may use a tablet terminal and a smart phone as shown in FIG.

  Hereafter, the characteristic part of this invention is demonstrated.

  As shown in FIG. 1, the control circuit 13 of the lighting fixture 1 is a light source for a period from a timing t0 when power is turned on to a timing t1 after a predetermined time (hereinafter referred to as “first transmission time”) T1. An optical transmission operation of controlling the light source driving circuit 11 so as to transmit a signal is performed. In the above optical signal, identification information assigned to itself (the lighting fixture 1) in advance (that is, identification information stored in the storage unit 134) is indicated. Specifically, the timing t0 when the power is turned on is, for example, the timing when the external AC power supply 4 is connected. The optical signal is transmitted by intensity modulation of light from the light source 10 that is a light source for illumination. Specifically, as shown in FIG. 5, the light source driving circuit 11 has a series circuit of a switching element Q1 and a resistor R1 connected in series to the light source 10 between output terminals of the buck converter 112. The control circuit 13 includes a third control unit 133 that drives the switching element Q1 on and off. That is, the intensity modulation is achieved by on / off driving of the switching element Q1. In the example of FIG. 5, the field effect transistor as the switching element Q1 is connected in such a direction that the source side has a higher voltage than the drain side (that is, the direction of the body diode is the forward direction). The frequency of the optical signal is set to a sufficiently high frequency (for example, 9.6 kHz) such that the intensity modulation is not recognized as blinking by human eyes. The optical signal may include information other than the identification information (for example, the type of the lighting fixture 1 and the position of the lighting fixture 1).

  In the remote controller 2, when the optical signal is received by the optical receiver 26, the controller 24 adds the identification information indicated in the received optical signal to the storage unit 23 and stores it. Thereafter, the identification information is added to the identification information indicated in the radio signal to be transmitted.

  According to the above configuration, it is necessary to provide the remote control device 2 with a push button or the like for an operation for transmitting the radio signal as compared with the case where the lighting fixture 1 transmits an optical signal in response to the radio signal from the remote control device 2. Therefore, the remote control device 2 can be simplified. In addition, even when the operation unit 21 of the remote control device 2 includes only a touch panel integrated with the display unit 25 as in the example of FIG. 4, a button (icon) for transmitting the above-described wireless signal is provided on the touch panel. The operability is improved because there is no need to display above.

  Moreover, in the lighting fixture 1, during the optical transmission operation, the control circuit 13 sets the peak value of the output current I1 to the light source 10 lower than the output current I1 to the light source 10 during a period when the optical transmission operation is not performed. Thus, the light source driving circuit 11 is controlled. That is, the light flux of the light source 10 rises after the end of the optical transmission operation. The above operation is achieved, for example, by setting the target value of the output current I1 of the buck converter 112 to be lower than in other periods during the optical transmission operation. With the above configuration, since the intensity of the optical signal is suppressed, interference of the optical signal between the lighting fixtures 1 can be suppressed.

  Further, the control circuit 13 may periodically perform an optical transmission operation during a period in which the light source 10 is continuously turned on, in addition to immediately after power-on as described above. In this case, the operation of making the light flux of the light source 10 constant over a predetermined non-transmission time and the optical transmission operation of transmitting an optical signal over a predetermined second transmission time are alternately repeated. The second transmission time may be the same as or different from the first transmission time (that is, the duration of the optical transmission operation immediately after the power is turned on). If this structure is employ | adopted, when memorize | storing the identification information of the some lighting fixture 1 in the remote control apparatus 2, the operation | work which turns on power supply for every lighting fixture 1 becomes unnecessary.

  In addition, as the light source 10, instead of the light emitting diode array, other well-known electric light sources such as an organic EL may be used.

  Further, when a plurality of light sources 10 are provided, only some of the light sources 10 may be used for transmitting optical signals. In this case, if the light distribution is different for each light source 10, the direction in which the optical signal is transmitted can be selected by selecting the light source 10 used for transmitting the optical signal.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Remote control device 10 Light source 11 Light source drive circuit 12 Reception circuit 13 Control circuit 21 Operation part 22 Transmission part 23 Storage part 24 Control part 26 Optical reception part

Claims (4)

A light source driving circuit for driving an electrical light source;
A receiving circuit for receiving a radio signal;
A control circuit for controlling the light source driving circuit according to a radio signal including identification information assigned in advance among radio signals received by the receiving circuit;
The lighting apparatus according to claim 1, wherein the control circuit performs a light transmission operation for controlling the light source driving circuit to transmit a light signal indicating the identification information for a predetermined time after the power is turned on.   The lighting apparatus according to claim 1, wherein the control circuit periodically performs the light transmission operation during a period in which the light source driving circuit lights the light source.   The said control circuit controls the said light source drive circuit so that the peak value of the light beam of the said light source may be made lower than the light beam after completion | finish of the said light transmission operation during the said optical transmission operation | movement. The lighting fixture of Claim 1 or Claim 2. The lighting fixture according to any one of claims 1 to 3, and a remote control device,
The remote control device is
An operation unit for receiving operation inputs;
A transmitter for transmitting the wireless signal;
An optical receiver for receiving the optical signal;
A storage unit for storing identification information indicated in the optical signal received by the optical receiving unit;
An illumination system comprising: a control unit that controls the transmission unit so as to transmit a radio signal according to an operation input received by the operation unit and identification information stored in the storage unit.

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