JP2012226885A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device which can be usefully controlled.SOLUTION: A light emission part 10 is made to preliminarily emit weak light when a reception part 26 receives information showing that an adjacent lighting device 4 is lighted when a human detection sensor 24 detects no person. The light emission part 10 is made to continue to emit light when the reception part 26 receives information showing that the adjacent lighting device 4 is lighted when the human detection sensor 24 does not detect a person any more during the light emission by the light emission part 10. The light emission part 10 is stopped from continuing to emit the light and made to emit the weak light when the human detection sensor 24 detects no person for a predetermined time or longer. The emitted light is switched to light which is weaker than that in a normal lighting state when the reception part 26 does not receive the information showing that the adjacent lighting device 4 is lighted when the human detection sensor 24 does not detect a person any more during the light emission by the light emission part 10.

Description

  The present invention relates to a lighting device.

  Conventionally, various illumination devices have been proposed for various purposes. Fluorescent lamps are generally used as light sources used in lighting devices, but in recent years, the use of LEDs has also advanced. Various proposals have also been made regarding the control of the lighting device. For example, in a lighting system, a plurality of light fixtures are controlled based on various detection information of the surrounding environment of the lighting fixture, and more appropriate lighting control is performed for the surrounding environment of the lighting fixture. It has been proposed to increase. (Patent Document 1) In addition, a control based on a human sensor has also been proposed. (Patent Document 2)

JP 2009-205841 A JP 2009-266424 A

  However, there are many problems to be further studied regarding the control of the lighting device.

  The subject of this invention is providing the illuminating device in which useful control is possible in view of the above.

  In order to achieve the above object, the present invention provides a light emitting unit, a human sensor, a receiving unit that receives information from an adjacent lighting device, and a light emitting unit according to information received by the human sensor and the receiving unit. Provided is a lighting device including a control unit that controls a lighting state. As a result, control based on a human sensor in cooperation with an adjacent lighting device is possible.

  According to a specific feature of the present invention, the control unit preliminarily turns on the light emitting unit when receiving information indicating that the lighting device adjacent to the receiving unit is turned on in the absence of human detection by the human sensor. Make it emit light. Thereby, smooth lighting control according to the movement of the person detected by the human sensor becomes possible.

  According to a more detailed feature, the preliminary light emission is a light emission that is weaker than a normal lighting state. Accordingly, it is possible to smoothly prepare for future lighting expected by the human sensor in a state where the adjacent lighting device is lit.

  According to another specific feature of the present invention, the control unit receives information indicating that an adjacent lighting device is turned on when human detection by the human sensor is stopped during light emission of the light emitting unit. If the signal is received, the light emitting unit continues to emit light. As a result, assuming that a person who has moved to the vicinity of an adjacent lighting device returns immediately afterward, it is possible to prevent the lighting state from changing rapidly due to such a short movement of the person.

  According to a more detailed feature, the control unit stops the light emission of the light emitting unit when the human sensor does not detect the human sensor for a predetermined time or more during the light emission of the light emitting unit. As a result, it is possible to realize rational continuation of light emission of the light emitting unit.

  According to a more detailed feature, the control unit stops the light emission continuation in the normal lighting state of the light emitting unit and switches the light emission by light weaker than that in the normal lighting state. Thereby, smoother lighting control is possible.

  According to another specific feature of the present invention, the control unit switches to light emission by light weaker than the normal lighting state when the human sensor detects no human sense during the light emission of the light emitting unit. As a result, it is possible to deal with subsequent changes in the situation more smoothly.

  According to a more detailed feature, the control unit must receive information indicating that an adjacent lighting device is lit when human detection by the human sensor is stopped during light emission of the light emitting unit. For example, the above-mentioned change to light emission by light weaker than the normal lighting state is executed. Thereby, it is possible to perform light emission control with weak light more appropriately in cooperation with the adjacent lighting device.

  According to a more detailed feature, the control unit stops the light emission continuation by light weaker than normal lighting by the light emitting unit when there is no human detection by the human sensor for a predetermined time or more. Thereby, it is possible to reasonably realize the continuation of light emission of the light emitting unit by weak light.

  According to another aspect of the present invention, there is provided an illuminating device including a light emitting unit, a receiving unit that receives information from an adjacent lighting device, and a control unit that causes the light emitting unit to emit light according to information received by the receiving unit. Provided. Thereby, effective cooperation with the adjacent lighting device is possible. According to a specific feature, the control unit causes the light emitting unit to emit light with light weaker than that in the normal lighting state in accordance with information received by the receiving unit.

  As described above, according to the present invention, it is possible to provide an illuminating device capable of performing useful control by cooperation of a plurality of illuminating devices.

It is a block diagram which shows the Example of the illuminating device which concerns on embodiment of this invention. It is a lighting condition block diagram of the simple independent mode in a some illuminating device. It is a lighting condition block diagram of the cooperation all lamp control mode in a some illuminating device. It is a lighting condition block diagram which shows the state which the 1st part has lighted in the cooperation partial control mode of several illuminating devices. It is a lighting condition block diagram which shows the state which changed the lighting part into the 2nd part in the cooperation partial control mode of several illuminating devices. It is a timing diagram of the mutual visible light communication in a some illuminating device. It is a basic flowchart which shows operation | movement of the illumination control part of the Example of this invention in FIG. It is a flowchart which shows the detail of step S22 of FIG.

  FIG. 1 is a block diagram showing an example of a lighting apparatus according to an embodiment of the present invention. The embodiment includes a plurality of LED lighting devices and a remote controller that can be controlled independently, but for the sake of simplicity, FIG. 1 shows two of the first LED lighting device 2 and the second LED lighting device 4, and one remote controller. 6 will be described. In addition, the 1st LED lighting apparatus 2 and the 2nd LED lighting apparatus 4 shall be arrange | positioned adjacent to a ceiling. The remote controller 6 is operated by an operator 8. The internal configuration of the lighting device will be described with respect to the first LED lighting device 2, and the second LED lighting device 4 with the same configuration will be given the number of the hundreds in common between the tens place and the first place, and is not necessary. As long as the individual explanation is omitted.

  The first LED lighting device 2 includes a first light emitting unit 10 that generates visible illumination light 11 and emits light by receiving power from a first power supply unit 12 connected to a household power line. Moreover, the light emission of the 1st light emission part 10 is controlled by the 1st illumination control part 14 containing a microcomputer. The first storage unit 16 stores a program for executing the function of the first illumination control unit 14 and temporarily stores various data necessary for control. The first illumination control unit 14 turns on / off the light emission of the first light emitting unit 10 according to the signal from the first infrared communication unit 22 that receives the infrared light 20 from the infrared communication unit 18 of the remote controller 6. Brightness adjustment (hereinafter referred to as “light control”) is performed.

  In addition to the control by the remote controller 6 as described above, the first illumination control unit 14 performs on / off and dimming of the light emission of the first light emitting unit 10 in response to the detection signal from the first human sensor 24. Specifically, the first human sensor 24 outputs a detection signal corresponding to the presence or absence of the human body within a predetermined range directly under the illumination of the first light emitting unit 10 by detecting the infrared ray 23 from the human body, The first illumination control unit 14 performs on / off and dimming of light emission of the first light emitting unit 10 based on a detection signal of the first human sensor 24. The first illumination control unit 14 further emits light from the first light emitting unit 10 according to the detection signal of the first light receiving unit 26 that intercepts the visible illumination light 111 from the second light emitting unit 110 of the adjacent second LED lighting device 4. Turn on / off and dimming. Similarly, the second illumination control unit 114 of the second LED illumination device 4 also has a second signal according to the detection signal of the second light receiving unit 126 that intercepts the visible illumination light 11 from the first light emitting unit 10 of the first LED illumination device 2. The light emission of the two light emitting units 110 is turned on / off and the light is adjusted.

  In addition, dimming of the 1st light emission part 10 and the 2nd light emission part 110 is performed by the change of the duty cycle by PWM control. At this time, the visible light 11 or 111 from the first light emitting unit 10 or the second light emitting unit 110 is changed by changing the timing of the control pulse of the PWM control without changing the overall duty cycle that determines the brightness. Put control information. The first light receiving unit 26 or the second light receiving unit 126 intercepts the other party's visible illumination light 111 or 11 on which the control information is carried as described above, and detects the control information. Details of such exchange of mutual control information by visible illumination light will be described later. When it is necessary to transmit a control signal at the timing when the first light emitting unit 10 or the second light emitting unit 110 is turned off, the first light emitting unit 10 or the second light emitting unit is visible illumination light 11 or 111 prior to turning off. Continues to emit light for a short time, and then turns off.

  The remote controller 6 causes the infrared communication unit 18 to transmit infrared light 20 for turning on / off the illumination device to the infrared communication unit 18 based on the control of the on / off operation unit 28. Further, the remote control unit 30 causes the infrared communication unit 18 to transmit infrared light for dimming the lighting device based on the operation of the dimming operation unit 32. Further, the remote control unit 30 causes the infrared communication unit 18 to transmit infrared light for instructing the lighting state change based on the operation of the instruction operation unit 34. In the above control, different channels can be set for each illumination device, and each illumination device can be individually controlled by transmitting infrared light including channel designation information from the infrared communication unit 18. It has become.

  The position of the operator or the like in the state of FIG. 1 in the configuration as described above will be described. The operator 8 is in a position that is detected by the second human sensor 124 of the second LED lighting device 4, and the operator 8 The infrared light 20 from the remote controller 6 is at a position detected by the first infrared communication unit 22 of the first LED illumination device 2 and the second infrared communication unit 122 of the second LED illumination device 4, respectively. Note that the operator 8 is not in a position where it is sensed by the first human sensor 24 of the first LED lighting device 2. On the other hand, the room occupant 36 is in a position that is detected by the first human sensor 24 of the first LED lighting device 2 and not detected by the second human sensor 124 of the second LED lighting device 4.

Next, lighting control in the above state will be described. First, in the human part partial lighting mode, when the operator 8 turns on the lighting device by the on / off operation unit 28, the infrared light 20 from the remote controller 6 is transmitted by the second infrared communication unit 122 of the second LED lighting device 4. Then, since the second human sensor 124 senses the operator 8, the second illumination control unit 114 turns on the second light emitting unit 110. On the other hand, the infrared light 20 from the remote controller 6 is also detected by the first infrared communication unit 22 of the first LED lighting device 2, and the first human sensor 24 senses the room occupant 36. 14 turns on the first light emitting unit 10. Here, if the room occupant 36 is not present, the infrared light 20 from the remote controller 6 is also detected by the first infrared communication unit 22 of the first LED lighting device 2, but is detected by the first human sensor 24. Therefore, the first illumination control unit 14 does not turn on the first light emitting unit 10. As described above, the first illumination control unit 14 and the second illumination control unit 114 in the human sensitive partial lighting mode are based on the detection state of the infrared light 20 from the remote controller 6 and the infrared rays 23 and 123 from the human body. The first light emitting unit 10 and the second light emitting unit are controlled to be turned on or off, respectively. In the above description, the control function based on the exchange of mutual control information by visible illumination light in the first light receiving unit 26 and the second light receiving unit 126 is omitted.

  FIGS. 2 to 5 are lighting status blocks for explaining various control situations when six lighting devices 2, 4, 40, 42, 44, 46 are arranged on the ceiling and controlled by one remote controller 6. FIG. FIG. The configuration of each lighting device is the same as that in FIG. 1, but FIGS. 2 to 5 describe the simple control mode in which lighting control is performed without the functions of the human sensors 24 and 124. Illustration of the sensor is omitted. Furthermore, since the causal relationship between detection of each light receiving unit and each infrared communication unit and lighting or extinguishing of each light emitting unit will be described in a conclusion, illustration of each control unit that mediates and controls this is also omitted.

  Based on the above premise, FIGS. 2 to 5 will be described with reference to the detectable range of the infrared light 20 from the remote controller 6 and the control based on the exchange of mutual control information using visible illumination light. 2 to 5, the light emitting portions of the blocks indicated by thick lines indicate that light is being emitted, and the light emitting portions of the blocks indicated by thin lines are being turned off. In addition, a thick solid arrow and a solid arrow between the blocks indicate the flow of the control signal that is derived from the lighting of the light emitting unit. On the other hand, the thick broken arrows and the broken arrows between the blocks indicate the flow of control signals that are derived from turning off the light emitting units. Furthermore, the numbers in the circles in the white arrows indicate the chaining order when the cause and the result are chained. Moreover, in order to avoid complexity in each block, the number of each block in the LED lighting device is omitted unless it is necessary for explanation.

  First, FIG. 2 is a lighting state block diagram in the simple independent mode. The simple independent mode does not involve a human sensor, and the infrared communication unit 18 transmits the infrared light 20 designating the second LED illumination device 4 in FIG. 2 in the simple independent mode. The second light emitting unit 110 is turned on based on the output of the second infrared communication unit 122 that detects the infrared light 20 that designates its own channel within the reachable range of the infrared light 20. ing. The first infrared communication unit 22 and the third infrared communication unit 222 are within the same reach range of the infrared light 20 and receive it, but their own channel is not designated, so the first light emitting unit 10 and The third light emitting unit 210 does not emit light. Further, the fourth infrared communication unit 322, the fifth infrared communication unit 422, and the sixth infrared communication unit 522 are not within the light receiving range of the infrared light 20 in the first place. The fourth light emitting unit 310, the fifth light emitting unit 410, and the sixth light emitting unit 510 are not lit.

  FIG. 3 is a lighting state block diagram in the cooperative all-lamp control mode. In the all-lamp control mode, all LED lighting devices are lit in cooperation regardless of the position at which the remote controller 6 is operated to transmit infrared light 20 by linking or chaining the LED lighting devices. Or it is a mode to turn off. Although FIG. 3 illustrates the case where the lighting control is performed, the same applies to the case where the lighting control is performed. Further, the position of the remote controller 6 is such that the first infrared communication unit 22, the second infrared communication unit 122, and the third infrared communication unit 222 are within the same reach range of the infrared light 20 in the same manner as in FIG. To do. The infrared light in the cooperative all-lamp control mode is transmitted through a cooperative channel that is set in common for all LED lighting devices. This cooperation channel may overlap with the designated channel of any LED lighting device. In this way, each LED lighting device is controlled in response to designation of the own channel or the cooperation channel according to the mode, but in the cooperation all-lamp control mode, it is set to respond to the cooperation channel.

  Under the above premise, when the infrared light 20 is transmitted in the cooperation channel, as shown in the chain order (1), first, the first infrared communication unit 22 and the second infrared light that are in the reach range of the infrared light 20 are used. The communication unit 122 and the third infrared communication unit 222 detect this, and turn on the first light emitting unit 10, the second light emitting unit 110, and the third light emitting unit 210, respectively. At this time, the visible light 11 from the first light emitting unit 10, the visible lights 111 and 211 from the second light emitting unit 110, and the visible light 311 from the third light emitting unit 210 are adjacent to each other, as shown in the chain order (2). The first light-receiving unit 26, the second light-receiving unit 126, and the third light-receiving unit 226 that are matched with each other, and as a result, the adjacent LED illumination devices receive each other, whereby the first light-emitting unit 10 and the second light-emitting unit 10, respectively. The unit 110 and the third light emitting unit 210 are controlled to emit light. However, as long as the LED lighting devices are already normally lit by receiving the infrared light 20, nothing happens by the control in the visible light communication.

However, if any of the first infrared communication unit 22, the second infrared communication unit 122, and the third infrared communication unit 222 fails and is not lit, the above-mentioned visible as a fail-safe function is possible. Lighting is possible by mutual control by optical communication. For example, if the second infrared communication unit 122 is out of order, lighting cannot be performed by the control (1) using the infrared light 20 from the remote controller 6 to the second LED illumination device 4. However, at this time, the control of (1) from the remote controller 6 to the first LED lighting device 2 or the third LED lighting device 40 and the visibility from the first LED lighting device 2 or the third LED lighting device 40 linked to this to the second LED lighting device 4 are visible. Based on the control (2) by the light 11 or 311, the second LED illumination device 4 is turned on.

Further, as described above, the chain of (2) by visible light communication to the second LED lighting device 4 occurs on both sides, so in the above, the first light emitting unit 10 of the first LED lighting device 2 is not further lit. Control (1) from the remote control 6 to the third LED lighting device 40 and control of (2) by the visible light 311 from the third LED lighting device 40 to the second LED lighting device 4 linked thereto. Functions as a fail-safe, and it is possible to light the second LED illumination device 4. In the above description based on FIG. 3, only the relationship between the second LED illumination device 4 and the adjacent first LED illumination device 2 and the third LED illumination device is mentioned, but in general, for example, the LED illumination devices are arranged in a matrix. In the case of being arranged, a plurality of fail-safe paths are basically established, which are four paths adjacent to each other, three paths in the side LED lighting apparatus, and two paths in the corner LED lighting apparatus. Further, in the above description, only communication between adjacent LED lighting devices has been described for the sake of simplicity. However, in actuality, mutual control by visible light communication has sufficient light in the direct and indirect illumination ranges of the respective light emitting units. As long as the strength can be ensured, it is possible even between the LED lighting devices that are separated from each other, so that the number of fail-safe paths is further increased.

  Next, lighting control of the fourth LED lighting device 42, the fifth LED lighting device 44, and the sixth LED lighting device 46 will be described. As described above, since the first light emitting unit 10 and the third light emitting unit 210 are turned on by the control (1) from the mocon 6 to the first LED lighting device 2 or the third LED lighting device 40, they are adjacent to each other in the illumination range. Control of (2) indicated by visible light 411 and 511 is chained to the fourth LED lighting device 42 and the sixth LED lighting device 46, respectively. Accordingly, the fourth light receiving unit 326 and the sixth light receiving unit 526 that intercept visible light of the first light emitting unit 10 and the third light emitting unit 210 turn on the fourth light emitting unit 310 and the sixth light emitting unit 410, respectively. In connection with this lighting, the control of (3) indicated by visible light 611 and 711 is further established from the fourth LED lighting device 42 or the sixth LED lighting device 46 to the fifth LED lighting device 44, and the fourth light emitting unit 310 The fifth light receiving unit 426 that intercepts the visible light 611 or the visible light 711 of the sixth light emitting unit 410 turns on the fifth light emitting unit 410. Also in this case, there are two paths leading to the lighting of the fifth light emitting unit 410, which function as fail-safe paths.

  4 and 5 are lighting state block diagrams in the cooperative partial control mode. FIG. 4 shows a state where the first part is lit, and FIG. 5 shows a state where the lit part is changed to the second part. This lighting part can be changed by changing the position at which the remote controller 6 is operated. Basically, the LED lighting device in the vicinity of the remote controller 6 to be operated is turned on, and the LED lighting device far from the remote control is turned off. .

  First, the state of FIG. 4 will be described. In the state of FIG. 4, it is assumed that an operator having the remote controller 6 is in the vicinity of the first LED lighting device 2, the second LED lighting device 4, and the third LED lighting device 40. In this state, when the remote controller 6 is operated and the infrared light 20 is transmitted through the cooperation channel in the cooperation partial control mode, the first infrared communication section 22, the second infrared communication section 122, and the third infrared communication area within the reachable range. The infrared communication unit 222 detects this, and turns on the first light emitting unit 10, the second light emitting unit 110, and the third light emitting unit 210, respectively. Since there is no lighting control chain in the cooperative partial control mode, the control ends here. Incidentally, when the LED lighting device is turned on, cooperation by visible light for turning off the LED lighting device already turned on outside the reach of the infrared light 20 occurs, but there is no corresponding LED lighting device in FIG. Such a chain will be described with reference to FIG.

In the state of FIG. 4, the operator who has the remote control 6 is away from the fourth LED illumination device 42, the fifth LED illumination device 44, and the sixth LED illumination device 46, and the fourth infrared communication unit 322 and the fifth infrared illumination device 46. Since the communication unit 422 and the sixth infrared communication unit 522 are not within the light receiving range of the infrared light 20, the fourth light emitting unit 310, the fifth light emitting unit 410, and the fifth light emitting unit 410 and the fifth light emitting unit 410 can The six light emitting units 510 are not lit.

  Next, the operator 8 leaves the first LED illumination device 2, the second LED illumination device 4, and the third LED illumination device 40 from the state of FIG. 4, and the fourth LED illumination device 42, the fifth LED illumination device 44, and the sixth LED illumination device 46. It is assumed that the lighting operation is performed by the remote controller 6 after moving to the vicinity. FIG. 5 shows the lighting state as a result of this operation. When infrared light 20 as shown in chained order (1) is transmitted in the cooperative channel in the cooperative partial control mode by this lighting operation, the fourth infrared communication unit 322 and the fifth infrared communication in the reach range are transmitted. The unit 422 and the sixth infrared communication unit 522 detect this, and turn on the fourth light emitting unit 310, the fifth light emitting unit 410, and the sixth light emitting unit 510, respectively. Although the chain concerning lighting is complete | finished now, in FIG. 4, since the 1st LED lighting apparatus 2, the 2nd LED lighting apparatus 4, and the 3rd LED lighting apparatus 40 were lighting, the chain | strand which makes these light extinguish out arises.

  Specifically, when the fourth light-emitting unit 310 and the sixth light-emitting unit 510 are turned on, the visible light 811 from the fourth light-emitting unit 10 and the visible light from the sixth light-emitting unit 510 are visible as shown in chain order (2). A cooperative turn-off signal by the light 911 is received by each of the first light receiving unit 26 and the third light receiving unit 226 that are adjacent to each other. The first light emitting unit 10 and the third light emitting unit have been lit as shown in FIG. 4 so far, and the infrared communication units 22 and 222 have received the lighting signal from the remote controller 6 when receiving the cooperative turn-off signal. Therefore, the light is extinguished when this condition is satisfied. Note that the first light emitting unit 10 and the third light emitting unit are based on the cooperative turn-off signal as shown in the chain order (3) by the linked turn-off signal detected by the first light receiving unit 26 and the third light receiving unit 226 prior to turning off. Relay light is emitted. These cooperative turn-off signals are all received and detected by the adjacent second light receiving unit 126, and the second light emitting unit 110 has been lit up as shown in FIG. 4 and a lighting signal from the remote control 6 when receiving the turn-off signal. Since the infrared communication unit 122 does not receive the light, the light is turned off when this condition is satisfied. As described above, the first LED lighting device 2, the second LED lighting device 4, and the second LED lighting device 4 that have been lit up so far, are linked to the lighting of the fourth light emitting unit 310, the fifth light emitting unit 410, and the sixth light emitting unit 510 (first portion). The third LED lighting device 40 (second portion) is turned off in cooperation. In addition, for such a turn-off cooperation signal, a chain by a plurality of paths (for example, the turn-off path of the second light emitting unit in FIG. 5) as described in the explanation of the cooperative all-lamp control mode in FIG. They function as fail-safe to each other.

  4 and 5 have been described on the assumption that the first part and the second part are adjacent to each other and visible light communication is performed between adjacent LED lighting devices for the sake of simplicity. However, cooperation is not limited to the case where the old lighting part and the new lighting part are adjacent to each other. According to the above-described embodiment, the LED lighting device that has been turned off in response to the turn-off cooperation signal is turned on for a short period for the purpose of relaying. The total energy of this lighting is so weak that it is not perceived by the human eye. As a result, even if the LED lighting device that is turned off is present in the middle of the route, the turn-off cooperation signals are sequentially chained to reach the LED lighting device that is turned on and turn it off. In addition, as described in the explanation of the cooperative all-lamp control mode in FIG. 3, when sufficient light intensity can be secured in the direct and indirect illumination ranges of the respective light emitting units, not only between adjacent LED illumination devices, Visible light communication is also possible between LED illumination devices separated from each other. Therefore, in such a case, the turn-off cooperation signal is such that, even if a turned-off LED lighting device is present in the middle of the route, the LED lighting that is turned on directly or without relaying appropriately without the relay. It reaches the device and can be turned off.

  FIG. 6 is a timing chart of mutual visible light communication in the first LED lighting device 2 to the sixth LED lighting device 46 shown in FIGS. 2 to 6. FIG. 6A shows a reference timing signal generated from 50 Hz or 60 Hz of an AC power line that supplies power to each LED lighting device in common. For example, the rise of each of the LED lighting devices at t1 and t9 Visible light communication timing is adjusted. FIGS. 6B to 6G show transmission and reception timings assigned to the first LED lighting device 2 to the sixth LED lighting device 46 based on the reference timing signal, respectively.

  In FIG. 6, t1 to t8 are time slots assigned to communication, and t8 to t9 are time slots devoted to PWM control for dimming. That is, dimming is performed by performing PWM control in the time period from t8 to t9 and changing its duty cycle. On the other hand, in the time period from t1 to t8, each LED lighting device is basically in a non-light emitting state, and the light receiving unit waits for receiving visible light for communication from other LED lighting devices. And on-off control is performed only in the time slot | zone allocated to each LED lighting apparatus, and the visible light for communication is transmitted.

  Specifically, FIG. 6B is a timing chart of the first LED lighting device 2, and a transmission time zone in which visible light for communication can be transmitted between time zones t2 and t3. The LED lighting device is in a non-light emitting state and is waiting to receive visible light for communication from the first LED lighting device 2. The first LED illumination device 2 is in a non-light emitting state during the time period from t1 to t2 and from t3 to t8, and waits to receive visible light for communication from the other LED illumination devices 2. Similarly, FIG. 6C is a timing chart of the second LED lighting device 4, where the time period from t3 to t4 is a transmission time period, and the other is a non-light emission standby time period. FIG. 6D to FIG. 6G are timing diagrams of the third LED lighting device 40 to the sixth LED lighting device 46, respectively.

  In FIG. 6 above, for convenience of explanation, the time zone from t1 to t8 is shown to be relatively large, but actually, the ratio of the time zone from t8 to t9 to the time zone from t1 to t8 is shown. By appropriately increasing it, the maximum value of the duty cycle can be increased and the dynamic range of dimming by PWM control can be expanded.

For convenience of explanation, the control based on the detection status of the infrared light 20 from the remote controller 6 and the infrared rays 23 and 123 from the human body will be described in FIG. 1, and in FIG. 2 to FIG. The explanation is divided in the form of describing the control by the exchange of mutual control information by the infrared light 20 and the visible illumination light. In practice, however, these are combined, and various controls are performed based on detection of infrared light 20 from the remote controller 6, detection of infrared rays 23 and 123 from the human body, and exchange of mutual control information by visible illumination light. It is possible.

  In carrying out the present invention, the present invention is not limited to the above-described embodiments, and the present invention can be implemented in other various embodiments as long as the advantages of the present invention can be enjoyed. For example, the mutual communication for cooperation between the LED lighting devices is not limited to the visible light communication as shown in the above-described embodiment, but can also be performed by wired communication between each other. Further, as the wired communication, power line communication through a power line that supplies power to the power supply unit of each LED lighting device may be employed.

  FIG. 7 is a basic flowchart showing the operation of the first illumination control unit 14 or the second illumination control unit 114 of the embodiment of the present invention in FIG. 1, and the first illumination control unit 14 or the second illumination control unit 114 is a power source. The flow starts when connected to. Hereinafter, the description of the flow will be described as a representative function of the first illumination control unit 14 of the first LED illumination device 2 to avoid complexity, but the second illumination control unit 114 of the second LED illumination device 4 or illustration is omitted. The functions of the respective illumination control units of the third LED illumination device 40, the fourth LED illumination device 42, the fifth LED illumination device 44, and the sixth LED illumination device 46 of FIG.

  In addition, in the flowchart of FIG. 7, a human sensitive partial lighting mode that cooperates with the human sensor that has been omitted from FIGS. 2 to 5 will also be described. As described with reference to FIG. 1, in the human body partial lighting mode, the first illumination control unit 14 receives the infrared light 20 from the remote control 6 and the first infrared communication unit 22 and the human body. On / off of the first light emitting unit 10 is controlled based on the detection state of the first human sensor 24 that detects the infrared ray 23. Further, according to the detailed function of the human part partial lighting mode according to the flow of FIG. 7 and the subsequent drawings, the first illumination control unit 14 cooperates with the surrounding LED illumination device (for example, the second LED illumination device 4), and is based on the human sensor. The LED lighting device that is detected is turned on and the surrounding LED lighting devices are lightly turned on, so that the LED lighting device that is turned on by the movement of a person can be changed smoothly. The details will be described based on the following flowchart.

  Details of the control function will be described below according to the flow of FIG. When the flow starts, first, the simple independent mode is set as an initial value in step S2, and the process proceeds to step S4. In step S4, it is checked whether or not a cooperative channel (see description of FIG. 3) set in common for all LED lighting devices is set. If there is a setting, the process proceeds to step S6 and the first LED lighting device 2 is turned on. Check if it is in a state. If it is not in the on state, the process proceeds to step S8, and it is checked whether the first LED illumination device 2 has received the infrared light on signal from the remote controller 6. When the infrared light on signal is not received, the process proceeds to step S10, and it is checked whether an on signal by visible light from another lighting device such as the second LED lighting device 4 is received.

  If a visible light on signal is received in step S10, the process proceeds to step S12. Further, when it is detected in step S8 that the first LED lighting device 2 has received the infrared light on signal from the remote controller 6, the process also proceeds to step S12. In step S12, first, the first light emitting unit 10 itself is lightly turned on, and a visible light on signal is transmitted through the visible light cooperation channel for the cooperation partial lighting mode with the LED lighting device. Note that the first light emitting unit 10 itself is lighted weakly because the first light emitting unit 10 may not be lighted depending on the detection state of the human sensor, and it is determined in a subsequent step whether or not lighting is performed. To do. Further, in step S14, the manual cooperation mode is first set as an initial value, and an infrared light off signal from the remote controller 6 or a visible light off signal from the adjacent LED lighting device is received during the manual cooperation mode processing described later. Then, it is possible to perform an off-interrupt by these signals so that an interrupt can be applied and the process can be skipped to a process related to turning off in step S30 described later.

  After the above process, the process proceeds to step S16, and the manual cooperation mode process is executed. The manual cooperation mode process in step S16 follows the movement of the person by the detection of the human sensor every time the remote controller 6 is manually operated, and the lighting state of the LED lighting device group so that the illumination is performed around the person. It is a process to change. In the automatic cooperation mode processing described later, such a manual operation is not waited, and the lighting state of the LED lighting device group is automatically changed by following the movement of the person. The significance of setting the mode processing as an initial value is as follows. In other words, if the automatic linkage mode processing functions immediately after the ON signal is generated and the above lighting change control suddenly occurs, it surprises a person who does not know the function of the lighting device, or in some cases it does not match the intention. However, by setting the manual linkage mode to the initial setting after the on signal is generated as described above, the lighting state is not changed unless there is a manual operation by a person. ing.

  In the manual cooperation mode process of step S16, in order to deal with the mode setting change after ending the process after making a series of determinations for a predetermined short period of time and changing the illumination state as necessary based on this for a predetermined time, The process proceeds to S18. When it is detected in step S6 that the first light emitting unit is in the lighting state, the flow directly proceeds to step S18. In step S18, it is checked whether an automatic linkage mode setting operation has been performed. If there is no operation, the process proceeds to step S20 to check whether the current mode is the manual cooperation mode. And if it is not manual cooperation mode, it will be automatic cooperation mode, and it will transfer to automatic cooperation mode processing of Step S22. Also, when an automatic cooperation mode setting operation is detected in step S18, the process proceeds to step S22. On the other hand, if it is detected in step S20 that the manual cooperation mode is detected, the flow returns to step S16. Hereinafter, unless the setting change operation in step S18 is detected, the loop from step S16 to step S20 is repeated to repeat the manual cooperation mode. Continue processing.

  In step S22, automatic cooperation mode processing is executed. As described above, the automatic cooperation mode process of step S22 does not wait for a manual operation, and automatically follows the movement of the person by the human sensor so that the illumination is performed around the person. It is a process of changing the lighting state of the county. Also in the automatic cooperation mode process of step S22, after a series of determinations for a predetermined short time and, if necessary, changing the illumination state based on this, the post-process is terminated, and the process proceeds to step S24 in order to deal with the mode setting change. To do. Details of step S22 will be described later. In step S24, it is checked whether a manual cooperation mode setting operation has been performed. If there is no operation, the process proceeds to step S26. On the other hand, when the manual cooperation mode setting operation is detected in step S24, the flow returns to step S16. Hereinafter, from step S16 as described above, unless the operation for returning to the automatic cooperation mode setting is detected again in step S18. The loop of step S20 is entered, and this is repeated to continue the manual linkage mode process.

  In step S <b> 26, it is checked whether the first LED lighting device 2 has received the infrared light off signal from the remote controller 6. When the infrared light off signal is not received, the process proceeds to step S28, and it is checked whether an off signal due to visible light from another illumination device such as the second LED illumination device 4 is received. If a visible light off signal is received in step S28, the process proceeds to step S30. Moreover, also when it is detected in step S26 that the first LED lighting device 2 has received the infrared light off signal from the remote controller 6, the process proceeds to step S30. In step S30, a light-off signal is transmitted in the visible light cooperation channel for the cooperation partial lighting mode with the LED illumination device, and then the first light emitting unit is turned off and the process proceeds to step S32.

  In step S32, it is checked whether or not the power supply to the first lighting control unit 14 has been cut off. If the power is not turned off, the flow returns to step S4. Steps S4 to S32 are repeated, and control is performed in response to various situation changes. Note that when the manual cooperation mode setting operation is not detected in step S24, the process proceeds to step S26 and after as described above. However, if no off signal is received and the power is not turned off, the flow continues as long as the automatic cooperation mode is lit. Returns from step S32 to step S22 via step S4, step S6 and step S18, and continues the automatic linkage mode.

  By the way, when the affiliated channel is not set in step S4, it is a mode in which each LED lighting device is independently controlled by a dedicated channel. Therefore, in order to execute this, the process proceeds to step S34, and the first LED lighting device 2 Check if it is lit. If it is not in the lighting state, the process proceeds to step S36, where it is checked whether the first LED lighting device 2 has received the infrared light on signal from the remote controller 6. When the reception of the infrared light ON signal is detected, the process proceeds to step S38, the first light emitting unit 10 is turned on, and the process proceeds to the independent mode process of step S40. Moreover, when the lighting state of the 1st light emission part 10 is detected by step S34, it transfers to step S40 directly.

  The independent mode processing in step S40 is mainly dimming, etc., through the dedicated channel of the first LED lighting device 2, to the first LED lighting device 2 alone, or in cooperation with other LED lighting devices controlled through other dedicated channels. The control is performed. In the independent mode process of step S40, after a series of determinations and, if necessary, a control based on the determination, the process is terminated and the process proceeds to step S42 to deal with the infrared off signal. In step S42, it is checked whether or not the first LED lighting device 2 has received the infrared light off signal from the remote controller 6. If reception is detected, the first LED lighting device 2 is turned off in step S44 and the process proceeds to step S32. . On the other hand, if no infrared light ON signal is detected in step S36, the process directly proceeds to step S32. The functions after step S32 are as described above. However, when power failure is not detected, the flow returns to step S4. Thereafter, unless there is a simultaneous channel setting, the process goes from step S4 to step 32 via step S34. This loop is repeated to correspond to the lighting, extinguishing, dimming operation, and the like of the first LED lighting device 2.

  FIG. 8 is a flowchart showing details of the automatic cooperation mode processing in step S22 of FIG. When the flow starts, it is checked in step S52 whether or not the first human sensor 24 is detecting a person. If there is human detection, the process proceeds to step S54 and the first light emitting unit 10 is set to normal. Light up. Next, for automatic cooperation, a signal indicating that the first LED lighting device 2 is normally lit is transmitted to the adjacent LED lighting device by visible light communication of the cooperation channel, and the flow is ended.

  On the other hand, when human detection by the first human sensor 24 cannot be confirmed in step S52, the process proceeds to step S56. This state includes not only the state in which human detection cannot be performed originally but also the state at the moment when the human is away from the state in which human detection has been detected until now. In step S56, it is checked whether or not the first light emitting unit is normally lit at present. If it is normally lit, the process proceeds to step S58 to check whether or not the adjacent LED illumination device is normally lit. This check is performed by receiving a normal lighting signal from the adjacent LED lighting device. Then, if the adjacent LED lighting device is in a normal lighting state, the process proceeds to step S60, enables interruption by human detection, proceeds to step S62, and whether or not a predetermined time has elapsed since human detection cannot be performed. To check. If the predetermined time has not elapsed, the process returns to step S58, and thereafter, the normal lighting of the first light emitting unit 10 is continued by repeating steps S58 to S62 until the predetermined time elapses. During this time, if human detection by the first human sensor 24 is restored, the process can immediately proceed to step S52 by interruption.

  The continuation of the normal lighting by repeating Step S58 to Step S62 assumes such a case that a person who has moved to the vicinity of the adjacent LED lighting device immediately returns to the vicinity of the first LED lighting device 2, and the like. This is to prevent the lighting state from changing rapidly due to the movement of. Then, after elapse of a predetermined time in step S62, the process proceeds to step S64, and the lighting state is changed to weak lighting. In step S66, a signal indicating that the normal lighting is stopped is transmitted to the adjacent LED lighting device, and the flow is ended.

  On the other hand, if it is not detected in step S58 that the adjacent LED lighting device is normally lit, the process proceeds to step S68, where the lighting state is immediately changed to weak lighting, and the normal lighting is stopped in step S70. A signal is transmitted to the adjacent LED lighting device. Then, in step S72, interruption by human detection is enabled and the process proceeds to step S74, and it is checked whether or not a predetermined time has elapsed since human detection cannot be performed. If the predetermined time has not elapsed, the process returns to step S72, and thereafter, the steps S72 and S74 are repeated until the predetermined time elapses to continue the weak lighting of the first light emitting unit 10. During this time, if human detection by the first human sensor 24 is restored, the process can immediately proceed to step S52 by interruption. In addition, when the adjacent LED lighting device changes the lighting state according to the output change of the human sensor, it is possible to appropriately move to step S58 and step S80 or step S82 described later by interruption.

  The continuation of the weak lighting by repeating Step S72 to Step S74 assumes such a case that a person who has left the first LED lighting device adjacent LED lighting device 2 returns immediately thereafter, and such a short time movement of the person This is to prevent the lighting state from changing extremely rapidly between lighting and extinguishing. Then, after elapse of a predetermined time in step S74, the process proceeds to step S76, the first light emitting unit 10 is turned off, and the flow is finished.

  On the other hand, if it is not detected in step S56 that the first light emitting unit 10 is normally lit without human detection, the process proceeds to step S78, and whether or not the first light emitting unit 10 is weakly lit. To check. If it is weakly lit, the process proceeds to step S80. Such a state corresponds to a state in which weak lighting is preliminarily generated by lighting of an adjacent LED lighting device, although the first human sensor 24 does not detect. In step S80, it is checked whether or not the adjacent LED lighting device is normally lit. If it is not lit, the process proceeds to step S76, the first light emitting unit 10 is turned off, and the flow ends. On the other hand, if it is confirmed in step S80 that the adjacent LED lighting device is normally lit, the flow is immediately terminated. In this case, the preliminary weak lighting of the 1st light emission part 10 is continued.

  On the other hand, when it is not detected in step S78 that the first light emitting unit 10 is weakly lit, the process proceeds to step S82 to check whether the adjacent LED lighting device is normally lit. And when the light emission state changes to normal lighting, it transfers to step S84, the preliminary weak lighting of the 1st light emission part 10 is started, and a flow is complete | finished.

The present invention can be applied to a lighting device for a relatively large room or facility such as a factory or an office.

10, 110, 210, 310, 410, 510 Light emitting unit 24, 124 Human sensor 26, 126, 226, 326, 426, 526 Receiving unit 14, 114 Control unit

Claims (11)

  A light emitting unit, a human sensor, a receiving unit that receives information from an adjacent lighting device, and a control unit that controls a lighting state of the light emitting unit according to information received by the human sensor and the receiving unit; A lighting device comprising:   The controller is configured to preliminarily cause the light emitting unit to emit light when receiving information indicating that the lighting device adjacent to the receiving unit is turned on in a state where no human detection is performed by the human sensor. The lighting device according to claim 1.   The lighting device according to claim 2, wherein the preliminary light emission is light emission by light weaker than a normal lighting state.   If the receiving unit receives information indicating that an adjacent illumination device is lit when human detection by the human sensor is stopped during light emission of the light emitting unit, the control unit The lighting device according to claim 1, wherein the light emission is continued.   The lighting device according to claim 4, wherein the control unit stops the light emission from the light emitting unit when the human sensor does not detect the human sensor for a predetermined time or longer while the light emission from the light emitting unit is continued.   The lighting device according to claim 5, wherein the control unit stops the light emission continuation in the normal lighting state of the light emitting unit and switches the light emission to light emitted by weaker light than in the normal lighting state.   2. The lighting device according to claim 1, wherein the control unit switches to light emission by light weaker than a normal lighting state when human detection by the human sensor is stopped during light emission of the light emitting unit.   If the control unit is not receiving information indicating that the adjacent lighting device is lit when human detection by the human sensor is not performed during light emission of the light emitting unit, the control unit is more than in a normal lighting state. The lighting device according to claim 7, wherein the conversion to light emission by weak light is executed.   The lighting device according to claim 7 or 8, wherein the control unit stops the light emission continuation by light weaker than normal lighting by the light emitting unit when there is no human detection by the human sensor for a predetermined time or more. .   A lighting device comprising: a light emitting unit; a receiving unit that receives information from an adjacent lighting device; and a control unit that causes the light emitting unit to emit light in accordance with information received by the receiving unit.   The lighting device according to claim 10, wherein the control unit causes the light emitting unit to emit light with light weaker than a normal lighting state in accordance with information received by the receiving unit.