JP2010231994A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of attaining a high function and suitable lighting-up control. <P>SOLUTION: Electronic ballasts 12, 13, and 14 are connected to an AC power source 11, and are connected to an upper control device 18 through an asynchronous communication wire 19. A microcomputer 25 performs setting and state detection of a control section 23, and address numbers of devices are memorized in a device address 27 in the microcomputer 25. A communication timing determination means 26 inputs a phase detection signal of an AC power source phase detection means 24 and a value of the device address 27, and transmits a timing signal to a communication controller 29. Communication data 28 retains data transmitting to the asynchronous communication wire 19 and received data. An internal setting value of the microcomputer 25, detected results of an operation state of the control section 23, and an A/D conversion value are set up at the time of transmission. The address value, data, and a command are retained at the time of receiving. The microcomputer 25 can change operations according to the command. The communication controller 29 performs acquisition and transmission of the communication data in the asynchronous communication wire 19. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting device, and more particularly to lighting control.

  There is a system called DALI (digital addressable lighting interface) as a communication protocol for lighting network control. If this lighting network control technology is applied, address control can be performed by individual lighting devices, so that it is possible to easily change the lighting settings even if the layout of the living space or office is changed.

  However, since DALI is a communication standard, operation outside the standard cannot be basically set. Also, the amount of information is as small as 64 addresses and 8-bit data. Therefore, it is difficult to increase the functionality of lighting control.

  Certainly, since the lighting device has only a simple function, it can be interpreted that these data are sufficient, but in reality, the amount of information necessary to make the human visual environment comfortable is not covered.

  In particular, when data to a lower lighting device is sent to a higher device, it is limited to 8-bit data, and the resolution of sensor data is low. Therefore, it is difficult to transmit / receive data of the illuminance sensor device.

  Thus, a technique for extending the function of DALI has been devised. This prior art shifts to the extended function mode by changing the stop bit of the DALI data. The extended function normally expands 2-byte DALI data to 3 bytes. As a result, the technique can increase the address value and the data amount (see, for example, Patent Document 1).

  Unlike asynchronous communication such as DALI, there is synchronous communication that periodically transmits data. This prior art is a technique in which a zero cross of an AC power supply is detected, data generated on a communication line is read in a time corresponding to a device address, and the device is operated (for example, see Patent Document 2).

Special table 2008-523576 JP-A-5-122767

  However, when the prior art described in Patent Document 1 is applied, there is a problem that the data transmission time becomes long. Since DALI is a two-way communication, the lower apparatus transmits data in response to request data from the upper apparatus. In the extended function, data of 2 or 3 bytes is returned after transmitting the command of 3 bytes.

  At this time, a transmission / reception time twice that of normal DALI is required. Furthermore, if the information including the extended address is transmitted / received, the amount of information on the data communication line is greatly increased and the communication capacity may be exceeded. Therefore, it is difficult to realize high functionality by mere data expansion.

  In the technique described in Patent Document 2, the apparatus can be easily configured, but bidirectional communication cannot be performed.

  The present invention has been made to solve such problems of the prior art, and an object thereof is to provide a lighting device capable of lighting control with high functionality and comfort.

  The illumination device of the present invention includes a synchronization signal detection means for receiving a periodic electrical signal or optical signal, a device address means having a preset device address, and data detection for detecting and holding numerical data generated in the device. Means, asynchronous communication means for performing asynchronous communication between a plurality of devices, communication timing determining means for inputting the output signal of the synchronous signal detecting means and the device address, and determining the communication timing of the asynchronous communication means; The data detection means transmits and receives data via asynchronous communication according to the timing of the communication timing determination means. In other words, this lighting device has both asynchronous communication and synchronous communication functions, and performs a lighting control function using these functions.

  According to the said structure, the system which made asynchronous communication and synchronous communication compatible can be constructed | assembled easily, and communication efficiency can be made high. Therefore, it is useful for a highly functional lighting device. Here, the “device-to-device” device is not limited to the lighting device, but may be a peripheral device other than the lighting device. Therefore, a plurality of devices of “asynchronous communication means for performing asynchronous communication between a plurality of devices” includes peripheral devices other than the lighting device.

  Further, the lighting device of the present invention is connected to an AC power source, and inputs a voltage signal of the AC power source to the synchronization signal detecting means.

  According to the above configuration, a special synchronization signal is not required, so that a system can be constructed at a low cost.

  In the lighting device of the present invention, a plurality of higher-order and lower-order devices are connected to the asynchronous communication line, and transmission is performed at the communication timing determined from all values other than the self-address value in the device address value. It is characterized by not.

  According to the above configuration, errors due to collision between asynchronous communication and synchronous communication can be accurately avoided.

  Moreover, the illumination device of the present invention is characterized in that the operation of the communication timing determining means is changed via an asynchronous communication line.

  According to the above configuration, the information amount of synchronous communication can be changed flexibly.

  In the illumination device of the present invention, the operation of the communication timing determination unit is set according to the type of the device.

  According to the above configuration, efficient communication is possible particularly with a device that requires a large amount of communication.

  The lighting device of the present invention is characterized in that the operation of the communication timing determining means is changed when a transmission collision is detected at the timing output by the communication timing determining means.

  According to the above configuration, recovery can be performed when a data collision occurs in synchronous communication.

  In the lighting device of the present invention, when the collision is detected from the middle of transmission at the timing output by the communication timing determining means, the communication timing from the next time is advanced, and when the collision is detected from the beginning of transmission, the communication from the next time is performed. It is characterized by delaying the timing.

  According to the above configuration, recovery can be immediately performed when a data collision occurs in synchronous communication.

  Moreover, the illuminating device of this invention changes the timing which the said communication timing determination means outputs periodically, It is characterized by the above-mentioned.

  According to the above configuration, the problem of complete data collision can be avoided, and the system can be recovered.

  In the illumination device of the present invention, a signal for transmitting / receiving data of the data detection unit via asynchronous communication according to the timing of the communication timing determination unit is a signal different from the asynchronous communication.

  According to the above configuration, the amount of communication information can be increased.

  In the illumination device of the present invention, a signal for transmitting / receiving data of the data detection unit via asynchronous communication according to the timing of the communication timing determination unit is divided into a plurality of data.

  According to the above configuration, it is possible to reduce communication data errors while increasing the amount of communication information.

  Further, the lighting device of the present invention includes power line signal receiving means for receiving a power line carrier signal in which a communication signal is superimposed on the AC power supply, and the communication timing determining means according to information detected by the power line signal receiving means. Or the device address or the operation of the asynchronous communication means.

  According to the above configuration, the communication capacity can be expanded without adding wiring.

  Moreover, the illuminating device of this invention changes the operation | movement of the said communication timing determination means according to the voltage of AC power supply.

  According to the above configuration, the trouble of setting the communication method can be saved.

  In addition, the lighting device of the present invention is characterized by detecting a signal transmitted in accordance with the timing of the communication timing determining means of the lower-order or higher-order device and changing the operation.

  According to the above configuration, cooperative control is possible, and the processing of the host system can be reduced.

  In addition, the lighting device of the present invention transmits and receives digital data related to the phase angle of the AC power supply.

  According to the above configuration, the amount of information can be increased without changing the communication speed.

  Further, the lighting device of the present invention comprises phase data means, and at the time of transmission, the timing of the communication timing determining means is determined by the phase of the specific AC power source according to the value of the phase data means. Data is transmitted via asynchronous communication, and when receiving, the phase data of the synchronous signal detecting means at the timing of the received signal is set in the phase data means.

  According to the above configuration, it is possible to increase the amount of information transmitted and received without changing the communication speed.

  Further, the lighting device of the present invention is characterized in that the phase angle of the AC power supply and the device address are related.

  According to the above configuration, the device address can be expanded.

  In addition, the lighting device of the present invention is characterized in that the phase angle of the AC power supply is associated with the upper and lower levels of the device.

  According to the above configuration, the priority of control can be easily set.

  The lighting device of the present invention is characterized in that the phase angle of the AC power supply and the type of the device are related.

  According to the above configuration, the device type can be easily identified.

  Further, the lighting device of the present invention is characterized in that the phase angle of the AC power supply and the control command are related.

  According to the above configuration, the function can be easily expanded.

  Further, the lighting device of the present invention is characterized in that the phase angle of the AC power supply and the time are related.

  According to the above configuration, an accurate time can be given to a plurality of devices at once.

  In addition, the lighting device of the present invention is characterized in that the end timing of the asynchronous communication signal is controlled so as not to be in a specific phase angle range of the AC power supply.

  According to the above configuration, communication errors related to reception timing can be avoided.

  The lighting device of the present invention is characterized in that the relationship between the phase angle of the AC power supply and the digital data is set according to the number of devices connected to the asynchronous communication line.

  According to the above configuration, the communication settings can be appropriately changed, so that the stability of the communication system is improved.

  In addition, the illumination device of the present invention is characterized in that the relationship between the phase angle of the AC power supply and transmission and reception is provided.

  According to the above configuration, transmission / reception switching can be performed smoothly without changing the communication speed.

  The lighting device of the present invention is characterized in that the device operates in synchronization with the AC power supply phase.

  According to the above configuration, since the operation timing of the apparatus can be set appropriately, an uncomfortable lighting environment can be provided.

In addition, the lighting device of the present invention includes a test mode for measuring the phase of the AC power supply and the signal delay of the asynchronous communication line.

According to the above configuration, since the communication state can be adjusted regardless of the installation conditions, the stability of the communication system is improved.

  Further, the lighting device of the present invention is characterized in that the operation of the communication timing determining means is changed when an abnormality occurs in the AC power supply.

  According to the above configuration, the communication system can be stably operated even when the power supply abnormality of the apparatus occurs.

  The lighting control system of the present invention includes the lighting device described above, detects a signal transmitted according to the timing of the communication timing determination means of the lower device, and monitors the state of the lower device depending on the presence or absence of the signal. Features.

  According to the above configuration, the abnormality of the apparatus can be detected quickly, and the maintainability of the system can be improved.

  As described above, according to the lighting device according to the present invention, the data transmission timing is set based on the number of cycles of the AC power supply, so that it is possible to eliminate the timing change due to the microcomputer operation clock variation of each device. Therefore, data collision does not occur even if a large number of devices are connected.

  Furthermore, since the transmission data length sent from each device is about 1 to 2 bytes, the occupation time of communication can be reduced. That is, since the data is transmitted even if there is no command from the host device, the command communication time is not required. Therefore, it is possible to secure time for asynchronous communication even when a large number of devices are connected.

The basic block diagram for demonstrating the illuminating device and illumination control system concerning embodiment of this invention Timing chart of lighting apparatus according to Embodiment 1 of the present invention The figure which shows schematic structure for demonstrating the illuminating device concerning Example 2 of this invention. Timing chart of illumination apparatus according to embodiment 2 of the present invention Timing chart of lighting apparatus according to Embodiment 3 of the present invention Embodiment 4 The timing chart of such an illumination device Timing chart of lighting apparatus according to embodiment 5 of the present invention Timing chart of lighting apparatus according to Embodiment 6 of the present invention Timing chart (1) of the illuminating device concerning Example 7 of this invention. Timing chart of lighting apparatus according to embodiment 8 of the present invention. Timing chart of lighting apparatus according to embodiment 9 of the present invention (1) Timing chart (2) of the illuminating device concerning Example 9 of this invention Timing chart (3) of the illuminating device concerning Example 9 of this invention Timing chart (4) of lighting apparatus according to Embodiment 9 of the present invention Timing chart of illumination apparatus according to embodiment 9 of the present invention (5) Timing chart (6) of the illuminating device concerning Example 9 of this invention Timing chart (2) of the illuminating device concerning Example 7 of this invention Timing chart (1) of the illuminating device concerning Example 10 of this invention. Timing chart (2) of the illumination device according to Example 10 of the present invention Timing chart (3) of the illumination device according to Example 10 of the present invention Timing chart of lighting apparatus according to embodiment 11 of the present invention The figure which shows the guide lamp apparatus which uses the fluorescent lamp La as a load as the fluorescent lamp illumination apparatus concerning Example 12 of this invention. The figure which shows schematic structure for demonstrating the LED lighting device concerning Example 13 of this invention. The figure for demonstrating the organic electroluminescent lighting device concerning Example 14 of this invention. The figure for demonstrating the illumination intensity sensor concerning Example 15 of this invention.

  An illumination device according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a basic configuration for explaining an illumination device and an illumination control system using the illumination device according to an embodiment of the present invention.

  The lighting control system according to the present embodiment includes three lighting devices, an AC power supply (AC_Line) 11, a host controller (Master_Controller) 18, and an asynchronous communication line (Data_Bus) 19 connected to the host controller 18. Consists of. In these lighting devices, the electronic ballasts (SU1, 2, 3) 12, 13, and 14 for turning on the fluorescent lamps La1, La2, and La3 (15, 16, and 17) as lighting fixtures are AC power supplies (AC_Line) 11 respectively. Connected to the host controller 18 via the asynchronous communication line 19. Since the electronic ballasts (SU1, 2, 3) 12, 13, and 14 have the same configuration, the electronic ballast (SU1) 12 will be described below. Here, each lighting device refers to a lighting fixture such as a fluorescent lamp and an electronic ballast that has both a synchronous communication function and an asynchronous communication function and is a lighting control circuit using this function.

  The electronic ballast SU1 (12) includes a full-wave rectifier circuit (DB) 21 for full-wave rectifying AC power into DC power, and direct-current power supplied from the full-wave rectifier circuit (DB) 21 to the fluorescent lamp (La1) 15. An inverter circuit (INV) 22 that converts the power into suitable AC power, a control unit (CTRL) 23 that supplies control signals such as turning on / off and dimming to the inverter circuit (INV) 22, and a cycle from the AC power source (AC_Line) 11 AC phase detection means (PD) 24 as a synchronization signal detection means for detecting a synchronization signal that is a typical electric signal, and setting and status detection of the control unit (CTRL) 23, and the higher level via the asynchronous communication line 19 A microcomputer (MPU) 25 that communicates with the control device 18 is included.

  The microcomputer (MPU) 25 includes a device address (ADR) 27 having a preset device address, data detection means (CDC) 28 for detecting and holding numerical data generated in the device, and a plurality of devices. Communication timing determining means for inputting the output signal of the AC phase detecting means PD24 and the device address 27 and determining the communication timing of the communication controller 29. (DCT) 26. The communication controller 29 transmits / receives data of the data detection means (CDC) 28 to / from the host controller 18 via the asynchronous communication line 19 in accordance with the timing of the communication timing determination means 26.

  According to the lighting control system according to the present embodiment, it is possible to easily construct a system that achieves both asynchronous communication and synchronous communication, and to improve communication efficiency. Therefore, it is useful for a highly functional lighting device. Here, the AC phase detection means is used as the synchronization signal detection means. However, the synchronization signal is not limited to an electric signal, and may be an optical signal or an optical signal detection means.

  An illumination apparatus according to an embodiment of the present invention will be described with reference to FIG. In the present embodiment, the data transmission prohibited section and the data transmission interval are set by this configuration. AC_Line is an AC power supply 11 of 100 V to 242 V_50 Hz or 60 Hz, and is connected to the same AC power supply as the host control device.

  Reference numerals 12, 13, and 14 denote electronic ballasts SU1, 2, and 3, which are connected to 64 units. 15, 16, and 17 are fluorescent lamps La 1, 2, 3 (19 is an asynchronous communication line Data_Bus, and may be a 2-wire DALI-compliant wiring. 18 is a host controller Master_Controller, which is usually a single unit. However, a plurality of connections can be established by setting the priority of control.

  The electronic ballast 12 includes a discharge lamp lighting device including a full-wave rectifier circuit 21, an inverter circuit 22, and a load lamp (La1) 15. The inverter circuit 22 is controlled to be turned on / off and dimmed by a control unit CTRL23.

  The AC power supply phase detection means 24 detects the phase of the AC power supply 11. Although the sine wave phase is detected in FIG. 1, the phase may be detected from the output of the full wave rectifier circuit 21. The output of the AC power supply phase detection means 24 outputs a pulse at a specific phase angle of the power supply voltage. It is also conceivable to output pulses at zero cross (0 ° and 180 °).

  The microcomputer 25 performs setting and state detection of the control unit 23. For example, the dimming level of the inverter circuit 22 is D / A output from the microcomputer 25 to the control unit 23. Further, the amount of electricity (for example, lamp current) in the control unit 23 can be A / D converted by the microcomputer 25 and stored as a digital value. In the microcomputer 25, the device address number is stored in the device address 27. For example, it is 0 to 63, and is set by switch setting or nonvolatile memory.

  The communication timing determination means 26 inputs the phase detection signal of the AC power supply phase detection means 24 and the value of the device address 27 and sends the timing signal to the communication controller (CC1) 29.

  Communication data (CDC) 28 holds data to be transmitted to the asynchronous communication line 19 and received data. At the time of transmission, the internal setting value of the microcomputer 25, the result of detecting the operation state of the control unit 23, and the A / D conversion value are set. When receiving, the address value, data, and command are retained. In response to the command, the microcomputer 25 changes the operation. The communication controller 29 acquires and transmits communication data of the asynchronous communication line 19.

  FIG. 2 shows a timing chart of the illumination device according to the embodiment of the present invention. At time t0, a command MC1 for starting communication is transmitted from the host controller. The command MC1 is transmitted to each electronic ballast.

  For example, for the details of the command, the content “transmit the integrated power value at a cycle of AC power supply phase 448 cycles” is transmitted. As the data content to be transmitted, lamp voltage, current, power, etc. are designated in addition to the integrated power.

Regarding the data transmission cycle (Tk1), a data table or the like is prepared in advance, and is determined from a few second interval to a several hour interval. In each device, transmission timing is set according to the command. When a system capable of connecting 64 units is constructed, the transmission timing of the DTC is required as follows.
Address 0 setting: (ADR value + 1) × 448/64 = 7
That is, data transmission is performed in order every seven cycles (time Tk2) of the AC power supply.

  Address 0 is set for SU1, address 1 for SU2, and address 2 for SU3. SU1 transmits data SD1-0 to the data bus after Tk2 has elapsed after instruction MC1.

  Further, SU2 transmits data SD2-0 to the data bus after a lapse of twice Tk2 after instruction MC1. Further, SU3 transmits data SD3-0 to the data bus after the elapse of three times Tk2 after instruction MC1.

  At the data transmission timing of SU1, the host controller provides a data transmission prohibition section DS1-1 and does not transmit data. The data transmission prohibited section is set longer than the time required for data communication.

  Similarly, data transmission prohibition sections DS1-2 and 1-3 are provided for SU2 and SU3. Data is transmitted at timings such as MC2 and MC3 outside the data prohibition section. When time Tk1 elapses after command MC1 is transmitted, SU1 transmits data SD1-1 again.

  In the present invention, since the data transmission timing is set based on the number of cycles of the AC power supply, it is possible to eliminate the timing change due to the microcomputer operation clock variation of each device. Therefore, data collision does not occur even if a large number of devices are connected.

  Furthermore, since the transmission data length sent from each device is about 1 to 2 bytes, the occupation time of communication can be reduced. That is, since the data is transmitted even if there is no command from the host device, the command communication time is not required. Therefore, it is possible to secure time for asynchronous communication even when a large number of devices are connected.

  In this embodiment, the microcomputer is provided inside the electronic ballast. However, the microcomputer may be arranged outside the electronic ballast. For example, in a multi-lamp lighting apparatus that controls a plurality of electronic ballasts with a single microcomputer, it is possible to easily cope with various apparatus forms by providing a control device including a microcomputer in addition to the electronic ballast.

  Although this embodiment is an example of an electronic ballast connected to an AC power supply, there is no problem if a signal corresponding to the AC power supply is given even when connected to a DC power supply. For example, a signal line dedicated for synchronization may be supplied to each device. In this case, one signal line is sufficient. That is, the synchronization signal may be supplied with the potential of the DC power supply as a reference.

  It is also possible to superimpose a synchronization signal on the asynchronous communication line. For example, a weak AC signal may be superimposed on the asynchronous communication line. In this case, it may be supplied from the host controller or may be supplied from a completely different device.

  FIG. 3 shows a configuration for explaining an illumination apparatus according to an embodiment of the present invention. With this configuration, the data timing is changed for each device. The AC power supply 11 is the same as that in the first embodiment.

  Reference numeral 31 denotes a sensor unit SSU1, which includes a sensor that detects light, temperature, people, and the like. Reference numerals 12 and 13 denote electronic ballasts SU 1 and 2 (where 15 and 16 are fluorescent lamps La 1 and 2, 19 is an asynchronous communication line Data_Bus, and 18 is a host controller Master_Controller.

  The sensor unit 31 will be described. The sensor (S1) 32 detects a physical quantity or the like. The detection circuit (DET) 33 amplifies the signal of the sensor (S 1) 32 and controls the sensor (S 1) 32. The AC power supply phase detection means 24 detects the phase of the AC power supply 11.

  The microcomputer 25 sets and detects the detection circuit 33. For example, the sensor sensitivity is D / A output from the microcomputer 25 to the detection circuit 33. Further, the sensor data detected by the detection circuit 33 is A / D converted and captured as a digital value.

  In the microcomputer 25, the device address number is stored in the device address (ADR) 27. For example, it is 0 to 63, and is set by switch setting or nonvolatile memory. The communication timing determination unit DTC 26 receives the phase detection signal of the AC power supply phase detection unit 24 and the value of the address 27 and sends the timing signal to the communication controller (CC1) 29.

  Communication data (CDC) 28 holds data to be transmitted to the asynchronous communication line 19 and received data. At the time of transmission, the internal setting value of the microcomputer 25 and the sensor data of the detection circuit 33 are set. When receiving, the address value, data, and command are retained. In response to the command, the microcomputer 25 changes the operation. The communication controller 29 acquires and transmits communication data of the asynchronous communication line 19.

  FIG. 4 shows a timing chart of the illumination device according to the embodiment of the present invention. At time t0, a command MC1 for starting communication is transmitted from the host controller. The command MC1 is transmitted to each device.

  MC1 has, for example, the contents “electronic ballast transmits data at cycle Tk1” and “sensor transmits data at cycle Tk2.” Address 0 is set for SSU1, address 1 for SU1, and address 2 for SU2.

  SSU1 transmits data SSD1-0 to the data bus after Tk3 has elapsed after instruction MC1. In addition, SU1 transmits data SD1-0 to the data bus after the elapse of twice Tk3 after instruction MC1. Further, SU2 transmits data SD2-0 to the data bus after the elapse of three times Tk3 after instruction MC1.

  At the data transmission timing of SSU1, the host controller provides a data transmission prohibition section DS1-1-1 and does not transmit data. Similarly, data transmission prohibited sections DS1-1-2 and 1-1-3 are provided for SU1 and SU2.

  When the time Tk2 elapses after the SSU1 transmits the data SSD1-0, the SSU1 transmits the data SSD1-1. When the time Tk1 elapses after SU1 transmits data SD1-0, SU1 transmits data SD1-1.

  According to this device, the sensor device and the electronic ballast can be used by being connected to the same communication line. By increasing the data output of the sensor device, it is possible to perform control without a sense of incongruity.

  That is, it is easy to improve the resolution by increasing the number of data bits transmitted from the SSU1. Furthermore, the control response of the system can be accelerated by shortening the sensor data interval.

  FIG. 5 is a timing chart for explaining the lighting apparatus according to the embodiment of the present invention. In this embodiment, an operation at the time of occurrence of data collision (collision) is defined. SU1 and SU2 are set to the same address, and data collision occurs.

  At time t0, the host control device enters the transmission prohibited section for a certain period. At time t1, SU1 starts transmitting data. There is no data collision between times t1 and t2. At time t2, SU2 starts transmitting data. Data collision occurs after time t2.

  Since SU1 detects a data collision in the middle of data transmission, the data transmission timing after the transmission interval time Tk1 elapses is advanced, and data is transmitted from time t4. Since SU2 detects a data collision from the beginning of data transmission and does not detect a collision from the middle, the data transmission timing after the elapse of the transmission interval time Tk1 is delayed and data is transmitted from time t5.

  As a result, data collision can be avoided within the data transmission prohibition section of the host device. Further, the data transmission prohibition section is set widely in consideration of such data collision. In order to consider that SU1 and SU2 start transmission at completely the same timing, it is also effective for each device to change the transmission timing at random in advance.

  FIG. 6 is a timing chart of the lighting apparatus according to the embodiment of the present invention, and shows an enlarged view of an operation in a certain data transmission prohibited section. In this embodiment, an example in which the protocol is different from that of asynchronous communication will be described.

  At time t0, the communication timing determining means DTC of SU1 generates a timing signal for starting communication, and SU1 enters a communicable state. At time t1, the upper control device transmits an instruction MC1 to the lower device.

  At this time, since the electronic ballast SU1 is in a communicable state, the address of the electronic ballast SU1 may not be specified in the command MC1 data. In other words, since only command data can be transmitted, the communication time can be shorter than that of normal asynchronous communication.

  In response to this higher order command, SU1 transmits data SD1-A, SD1-B, SD1-C. Each data may be transmitted with the phase timing of the AC power supply aligned.

  By doing so, it is possible to eliminate communication errors caused by misalignment of communication timing due to variations in SU1 microcomputer clock. Furthermore, since it is clear that the transmission is performed by the communication timing determination unit DTC, communication is possible even in an environment where other devices are mixed.

  In this example, SU1 operates to transmit three data at a time. Thus, communication can be performed using a protocol different from normal asynchronous communication, and the amount of data transferred from the lower apparatus to the upper apparatus can be temporarily increased.

  FIG. 7 is a timing chart of the lighting apparatus according to the embodiment of the present invention, and shows a case where the operation is changed by looking at data of other devices. That is, this is an example in which a host control device (Master), electronic ballasts SU1 to SU3, and sensor devices SSU1 and 2 are connected on a communication line.

  When the host control device 18 transmits a data transmission command (command) MC1, each device transmits data at a communication timing determined by its address value. The sensor units SSU1 and SSU2 transmit data after the time Tk2 and Tk2 have elapsed after the data transmission command MC1 is generated.

  Thereafter, the electronic ballasts SU1, SU2, and SU3 transmit data. The electronic ballasts SU1 to SU3 recognize in advance that addresses 0 and 1 are sensors. The electronic ballast SU1 acquires data generated at times t2 and t3. The dimming operation can be performed based on the acquired data.

  As described above, the electronic ballast can operate while observing the data of the sensor unit, and is automatically controlled according to the surrounding environment. Compared with a system in which the host controller acquires sensor data and controls the electronic ballast based on the sensor data, the present embodiment can perform the same control with a reduced amount of data.

  FIG. 8 is a timing chart of the lighting apparatus according to the embodiment of the present invention, and shows an enlarged view of the operation in a certain data transmission prohibited section. This is a case where transmission / reception is changed according to the phase.

  At time t0, the communication timing determining means DTC of SU1 generates a timing signal for starting communication, and SU1 enters a communicable state. At time t1, the upper control device transmits an instruction MC1 to the lower device.

  The transmission timing of the instruction MC1 of the host controller is performed in the positive cycle of the power cycle. In response to this higher order command, SU1 transmits data SD1 in the negative cycle of the power cycle.

  By clarifying the transmission and reception of the host controller according to the phase of the AC power supply in this way, it becomes easy to monitor information even when other devices are connected, and the maintainability of the system can be improved. . Further, when the operation is performed with reference to information of other devices as in the fifth embodiment, it is easy to identify the data portion.

  FIG. 9 is a timing chart of the illumination device according to the embodiment of the present invention, and shows a case where the lighting timing is matched. In effect dimming, it is required to turn on and off at the same time. In this example, the power supply phase is used to match the timing.

  The instruction MC1 including start-up is transmitted from the master to the electronic ballasts SU1 to SU3 at time t1. At that time, the MC1 instruction ends earlier than the zero cross point t2. The electronic ballasts SU1 to SU3 simultaneously start starting control at time t3, which is one cycle after the power cycle.

  Times t2 to t3 are set in consideration of the data processing margin of each electronic ballast. For example, when the electronic ballast is in a standby state and the microcomputer processing speed is reduced or the mode is shifted to the sleep mode, a longer time is set to start the microcomputer.

  Reference is now made to FIG. The timing of the instruction of the host controller is important for timing synchronization. The command timing is designed so that there is no variation in the result of the communication timing determination means DTC.

  That is, the communication timing determining means DTC determines the timing based on the zero cross of the AC power supply, but this can be solved by setting the time margin ΔTg so that the end of the command of the host control device does not become near the zero cross.

  The time ΔTg is set according to the processing time of the processor of the apparatus. If the DTC timing reference is not zero crossing, the point of the time margin ΔTg is also changed according to the reference.

  FIG. 10 is a timing chart of the lighting apparatus according to the embodiment of the present invention, and shows a case where the start timing is shifted. When a plurality of devices (lighting devices) are activated at a time, an inrush current at the time of activation becomes a problem. In this example, the inrush current at startup is distributed.

  Addresses 0 to 2 are set for the electronic ballasts SU1 to SU3, respectively. When an instruction MC1 including activation is transmitted from the master, each electronic ballast sets a delay time corresponding to the address value, and activates after the set time.

  FIG. 11 is a timing chart of the lighting apparatus according to the embodiment of the present invention, and shows a case where an address or the like is expressed by a phase. In this case, an address is set according to the phase of the AC power supply. In the figure, addresses of eight devices (lighting devices) are expressed.

  That is, the address value is set every 45 °, such that 0 ° of the sine wave is address 0 and 45 ° is address 1. This address value is determined at the start timing of transmission / reception data.

  That is, when the host device transmits a command to the lower device, if it is transmitted at a 45 ° phase, it is a command to the phase address 1. On the contrary, when the lower apparatus transmits data to the upper apparatus, it can be identified that the data is from the phase address 2 if the transmission timing is 90 °.

  It is also possible to increase the number of connected devices by combining this phase address with a normal address. This example is an example of eight devices, but the number of addresses can be increased if the phase detection resolution of each device can be increased. Furthermore, if the phase address is initially set by the apparatus at the time of manufacture, the address setting at the time of installation becomes easy.

  Also, as shown in FIG. 12, setting in units of groups is possible as well as addresses. As shown in the figure, the number of connection devices can be increased by setting a group for every 90 ° of the AC power supply.

  Further, as shown in FIG. 13, priority may be set. It is also conceivable to set the data at the 0 ° phase by setting it as the upper level and the lower level thereafter. The feature of this example is that priority can be expressed by time, so that processing with high priority can be set.

  Further, as shown in FIG. 14, the phase may be set according to the type of apparatus. 0 ° to 90 ° is a host device, 90 to 180 ° is a sub-controller such as a wall switch, 180 to 270 ° is a sensor device, and 270 to 360 ° is an example of electronic ballast. Since priorities can be set at the same time, it is useful when connecting a large number of devices.

  As shown in FIG. 15, the command type may be identified by the phase. As shown in the figure, the DALI command is set at 0 ° to 90 ° and 180 to 270 °, and the special command 1,270 to 360 ° at 90 to 180 ° is an example of the special command 2. With this setting, it is possible to execute a special command and a normal command by function expansion without switching instructions.

  Moreover, as shown in FIG. 16, it can also set according to time. In an apparatus that changes operation according to time, the operation can be changed with a simple configuration without changing the protocol of asynchronous communication. Although the figure shows one day, setting in one year is easy.

  FIG. 18 is a timing chart of the test mode in the lighting device according to the embodiment of the present invention. This is an example of correcting an error occurring between apparatuses. The AC power supply phase detection means PD converts the power supply phase into time, but the detection circuit varies greatly. Therefore, the variation of the AC power supply phase detection means is corrected using the asynchronous communication means.

  The figure shows the AC power supply voltage, the transmission data of the host controller, and the output of the AC power supply phase detection means PD. The host controller transmits data based on the zero cross of the AC power supply. The pulse signal of the AC power supply phase detection means PD in the apparatus is compared with the data timing of the host controller, and the MPU detects the deviation of the PD, calculates the correction value, and stores it.

  By performing this correction operation, the accuracy of data representation using the phase as in the ninth embodiment is dramatically improved. If this correction method is applied, the timings of the microcomputers of the devices can be aligned.

  FIG. 19 shows an example of testing the status of connected devices in a short time. The figure confirms the connection of 64 devices (lighting devices) in about 1 second. The host control apparatus transmits a command MC1 for confirming the connection state of the apparatus. Thereafter, each of the electronic ballasts SU1 to 64 transmits confirmation data after the power cycle corresponding to the address.

  If the power supply frequency is 60 Hz, data for 64 units is transmitted in about 1 second. When confirming the connection by asynchronous communication, it is necessary to send a confirmation command to each device. Therefore, it can confirm in a short time.

  FIG. 20 is an example of testing the communication speed of the connected device. Communication lines such as lighting devices are drawn for a long time, and the communication speed cannot be increased. However, depending on the wiring situation, the communication speed may be good. Therefore, it is desirable to optimally set the communication speed according to the state of the wiring.

  In this example, a communication test is performed in a short time. When a command MC1 including a communication test of the host controller is transmitted, SU1 transmits SD1A having a normal communication speed at t2, then SD1B having a higher communication speed than normal is transmitted at t3, and further at time t4. Send SD1C with high communication speed.

  Thereafter, at time t5, the host control apparatus transmits a command MC2 for setting the communication speed to SU1. By setting in this way, the host control device can set the optimum communication speed for each device. As a result, the data transmission prohibited section can be shortened, and the utilization rate of the communication line can be increased.

  FIG. 21 is a timing chart for monitoring the state of the device in the lighting apparatus according to the embodiment of the present invention. This is an example of detecting an apparatus abnormality based on the presence / absence of data transmitted by each apparatus (illumination apparatus).

  At time t0, the host controller transmits MC1 including a command for starting periodic transmission. Each device receives this command and periodically transmits data. Address values 0 to 2 are set in SU1 to SU3, respectively.

  After MC1 is transmitted, SU1 transmits data when Tk2 has elapsed. Suppose that after MC1 is transmitted, SU2 should transmit data at twice the time of Tk2, but there is no transmission.

  In that case, the host controller transmits a confirmation command MC2 to SU2. If the response after MC2 transmission has not elapsed for a certain period of time, the host controller detects a failure of SU2. This example is particularly useful in a lighting control system that monitors operations while performing normal asynchronous communication.

  FIG. 22 shows a guide lamp device using a fluorescent lamp La as a load as a fluorescent lamp illumination device according to an embodiment of the present invention. In this guide lamp device, a fluorescent lamp La as a light source, a power supply terminal portion 101 to which a power supply line from a commercial power supply AC of 100V is connected, and a commercial power supply AC are input via the power supply terminal portion 101, and the fluorescent lamp La is connected. A lighting device 102 that is lit and a storage battery 103 that is an emergency power source are provided.

  The lighting device 102 includes an input unit 102a that receives an input from the commercial power supply AC via the power supply terminal unit 101, a rectifier circuit 102b that rectifies an input from the commercial power supply AC received by the input unit 102a, and a rectified voltage that is desired. Flyback DC / DC converter 102c that steps down to a DC voltage (here, rectifier circuit 102b and DC / DC converter 102c are power conversion circuits that convert an input received via input unit 102a to a desired output). A charging circuit 102d for generating a charging current to the storage battery 103 from the output of the DC / DC converter 102c, a switch 102e for switching the connection of the storage battery 103 to the charging circuit 102d or a lighting circuit 102f described later, and a DC / DC Lighting power for supplying the output of the converter 102c or the output of the storage battery 103 to the fluorescent lamp La The lighting circuit 102f for conversion, the output unit 102g for outputting the lighting power to the fluorescent lamp La, and the power source from the input side of the lighting circuit 102f, the DC / DC converter 102c, the charging circuit 102d, the switch 102e, and the lighting circuit 102f And a control circuit 102h including a microcomputer for controlling each operation. The control circuit 102 h is connected to the host control device 18 via the asynchronous communication line 19.

  The control circuit 102h switches the switch 102e to the charging circuit 102d side to charge the storage battery 103 and outputs the lighting power converted by the lighting circuit 102f using the commercial power supply AC as a power supply when the commercial power supply AC is always energized. It supplies to the fluorescent lamp La through the part 102g. In an emergency in which the commercial power supply AC is monitored to detect a power failure of the commercial power supply AC, the switch 102e is switched to the lighting circuit 102f side, the storage battery 103 is connected to the lighting circuit 102f, and the storage battery 103 is used as a power source. The lighting power converted by the lighting circuit 102f is supplied to the fluorescent lamp La via the output unit 102g.

  The control circuit 102h functions in the same manner as the microcomputer 25 shown in FIG. 1, communicates with the host controller 18 via the asynchronous communication line 19, and performs setting and state detection of the DC / DC converter 102c, the switch 102e, and the like. For example, the dimming level of the fluorescent lamp La is D / A output to the lighting circuit 102f. In addition, the amount of electricity (for example, lamp current) in the lighting circuit 102 f is A / D converted, and the digital value is transmitted to the host controller 18 via the asynchronous communication line 19.

  FIG. 23 shows a schematic configuration for explaining an LED lighting device according to an embodiment of the present invention. This LED lighting device includes a rectifier circuit DB1 composed of a diode bridge connected to an AC power supply AC via a switch SW1, a power supply circuit 201 connected between the output terminals of the rectifier circuit DB1, and a power supply circuit 201. A plurality of LEDs (light emitting diodes) 202a to 202d connected in series between output terminals of the circuit 201 and an abnormality detection unit 203 described later are provided.

  The power supply circuit 201 is connected between the output terminals T3 and T4 of the rectifier circuit DB1 and smoothes the pulsating power source that has been full-wave rectified by the rectifier circuit DB1, and a step-down chopper that steps down the voltage across the smoothing capacitor C1. Circuit 204. The step-down chopper circuit 204 rectifies by connecting a cathode to a connection point between the switching element SW2 and the inductor L1 and a series circuit of the inductor L1 and the capacitor C2 connected via the switching element SW2 connected between both ends of the smoothing capacitor C1. A diode D1 having an anode connected to the output terminal T4 on the low potential side of the circuit DB1 and a chopper control unit 205 that performs on / off control of the switching element SW2 at the switching frequency based on the voltage across the capacitor C2. The chopper controller 205 is connected to the host controller 18 via the asynchronous communication line 19.

  Further, the power supply circuit 201 includes a series circuit of a resistor R1 and a Zener diode ZD1 connected between output terminals of the step-down chopper circuit 204 (between both ends of the capacitor C2) so as to make the output of the step-down chopper circuit 204 constant. The constant current circuit 206 includes a transistor Q1 having a base connected to a connection point between the Zener diode ZD1 and the resistor R1 and an emitter connected to the other end of the Zener diode ZD1 via the resistor R2. As a result, a constant current determined by the collector current of the transistor Q1 flows through the LEDs 202a to 202d connected between the output terminal on the high potential side of the step-down chopper circuit 204 and the collector of the transistor Q1.

  By the way, in this Embodiment, in order to improve the thermal radiation efficiency of LED202a-202d and to suppress a temperature rise, LED202a-202d is insulation which has insulation in the whole area | region of one surface of the metal plate (for example, copper plate) 207. It is mounted on a heat dissipation board 209 on which a layer is formed. Further, not only the LEDs 202a to 202d but also components (resistors R1, R2, Zener diode ZD1, and transistor Q1) of a part of the power supply circuit 201 (constant current circuit 206) are mounted on the heat dissipation substrate 209. In addition, components other than the above in the LED lighting device are mounted on a general circuit board (for example, a glass epoxy board) other than the heat dissipation board 209.

  The heat dissipating substrate 209 has the above-described components mounted on an insulating layer, and a conductor pattern is formed on the surface of the heat dissipating substrate 209 on the insulating layer side, and the above-described components including the LEDs 202a to 202d are made of a conductor pattern with solder. It is connected to the. In addition, one end of a lead wire is electrically connected to the metal plate 207, and the other end of the lead wire is connected to a detection capacitor C 3 that constitutes the abnormality detection unit 203.

  Since the metal plate 207 of the heat dissipation board 209 is close to the charging unit made of the component or conductor pattern mounted on the heat dissipation board 209 via the insulating layer, it is capacitively coupled to these component or conductor pattern. become. Here, as shown in FIG. 23, the capacitance component between the anode of the LED 202a and the metal plate 207 is C11, the capacitance component between the anode of the LED 202b and the metal plate 207 is C12, and the anode of the LED 202c and the metal plate 207 C13, the capacitance component between the anode of the LED 202d and the metal plate 207, C14, the capacitance component between the collector of the transistor Q1 and the metal plate 207, C15, the base of the transistor Q1 and the metal plate 207 C16, the capacitance component between the emitter of the transistor Q1 and the metal plate 207 is C17, and the capacitance component between the output terminal T4 on the low potential side of the rectifier circuit DB1 and the metal plate 207 is C18. .

  One terminal of the detection capacitor C3 of the abnormality detection unit 203 is connected to one output terminal of the AC power supply AC (that is, one input terminal T2 of the rectifier circuit DB1). Here, the abnormality detection unit 203 sets the potential of one output terminal (hereinafter referred to as a reference point Vs) of the AC power supply AC as a reference potential (= 0 [V]), and connects the other terminal of the detection capacitor C3 with respect to the reference potential. A comparator COMP1 that compares the potential (corresponding to the voltage across the detection capacitor C3) with the threshold value Vref1 is provided. That is, the comparator COMP1 of the abnormality detection unit 203 uses the metal plate 207 in the heat dissipation board 209 as a detection conductor, detects the potential of the detection conductor with respect to the reference potential, and compares it with a predetermined threshold value Vref1. In the present embodiment, the threshold value Vref1 is set on the minus side with respect to the reference potential (0 [V]) of the reference point Vs. The output of the comparator COMP1 is input to a switch control unit 213 that performs on / off control of the switch SW1. The switch control unit 213 turns on the switch SW1 in a steady state (a state where the signal from the comparator COMP1 is at L level). When the abnormality detection unit 203 determines that an abnormality has occurred and the signal from the comparator COMP1 becomes H level, the switch SW1 is turned on. Configured to turn off.

  The chopper control unit 205 functions in the same manner as the microcomputer 25 shown in FIG. 1, communicates with the host control device 18 via the asynchronous communication line 19, performs setting and state detection of the switching element SW <b> 2, for example, the LEDs 202 a to 202 d Control the dimming level. In addition, the amount of electricity (for example, lamp current) in the LEDs 202 a to 202 d is A / D converted, and the digital value is transmitted to the host controller 18 via the asynchronous communication line 19.

  FIG. 24 is a diagram for explaining an organic EL lighting device according to an example of the present invention. The organic EL lighting device of this embodiment is connected to an AC power source PS and outputs a DC voltage, a step-down converter 352 that changes the output voltage of the rectifier 351, and a step-down converter 352, and is connected to four switching devices. A full-bridge inverter 353 that forms a full bridge with the elements Q1 to Q4, and a current detection circuit 354 having a resistance R that is connected between the output of the step-down converter 352 and the full-bridge inverter 353 and detects the current of the full-bridge inverter 353 And a control circuit 355 for supplying control signals S1 to S4 to the full bridge inverter 353, and an organic EL element (not shown) as a light emitting element. The control circuit 355 is connected to the host controller 18 via the asynchronous communication line 19.

  The step-down converter 352 includes a capacitor C1 charged by the output of the rectifier 351, a switching element G5 for chopping the voltage charged in the capacitor C1, a diode D1, a choke coil L for smoothing the chopped voltage, and And a smoothing capacitor C2.

  In the organic EL lighting device according to the present embodiment, a resistor R that detects the current of the full bridge inverter 353 is connected between the step-down converter 352 and the full bridge inverter 353, thereby reversing the forward voltage applied to the organic EL element. Make the direction voltage almost equal.

  The control circuit 355 functions in the same manner as the microcomputer 25 shown in FIG. 1 and communicates with the host controller 18 via the asynchronous communication line 19 and sets and detects the state of the full bridge inverter 353. For example, the organic EL element Control the dimming level. Further, the amount of electricity (for example, lamp current) in the full bridge inverter 353 is A / D converted, and the digital value is transmitted to the host controller 18 via the asynchronous communication line 19.

  FIG. 25 is a diagram for explaining the illuminance sensor used in the illumination device according to the example of the present invention. This illuminance sensor is used, for example, as the sensor S1 (32) shown in FIG. FIG. 25A shows a light incident side surface of the illuminance sensor 401, and FIG. 25B shows a cross section of the illuminance sensor 401 taken along the line BB of FIG.

  The illuminance sensor 401 is a light detection unit 403 having sensitivity to light in the visible light region (hereinafter referred to as visible light) and light on the long wavelength side of light outside the visible light region (hereinafter referred to as long wavelength light). And a signal processing circuit 404 for performing a process such as amplification on the light detection signal generated in the light detection unit 403 when light enters the light detection unit 403 and outputting the signal from the signal processing circuit 404 to the outside. An optical filter 407 for shielding long-wavelength light is provided on one surface (hereinafter referred to as substrate surface) 421 of the substrate 402 and a bonding pad 406 for output on the other surface (hereinafter referred to as substrate back surface) 415. It has. A wiring aluminum 405 is disposed on the bonding pad 406 and is connected to the electrode 413 through a flip mounting bump 412.

  Further, the illuminance sensor 401 includes a light shielding aluminum 411 that blocks incident light that has not passed through the optical filter 407 from entering the light detection unit 403. The illuminance sensor 401 includes a first insulating film 408, an intermediate insulating film 409, and a protective film 410 that insulate and protect the substrate surface 421, the wiring aluminum 405, the light shielding aluminum 411, and the like, and is transparent or light transmissive. It is surrounded by a sealing resin 416.

  Each component described above will be described. The light detection unit 403 is, for example, a photodiode formed on the substrate 402, and generates a light detection signal when receiving light. The signal processing circuit 404 performs processing such as amplification on the photodetection signal generated in the photodetection unit 403 by, for example, a transistor formed on the substrate 402.

  The optical filter 407 is for blocking the long wavelength light incident on the light detection unit 403. The optical filter 407 prevents the transmission of the long wavelength light by reflecting or absorbing the long wavelength light component and transmits the visible light component. The multilayer interference filter to be formed is used. The multilayer interference filter is formed, for example, by stacking thin films of silicon oxide or titanium oxide using a vacuum deposition method or a sputtering method. In order to form the optical filter 407 only in the necessary portion, patterning is performed using a mask having an opening corresponding to the film formation region when forming a thin film.

  The light shielding aluminum 411 is formed so that disturbance light from the side surface of the substrate or the like to the light detection unit 403 is blocked and only the light that has passed through the optical filter 407 enters the light detection unit 403. The light shielding aluminum 411 is formed of, for example, an aluminum deposited thin film.

  The first insulating film 408 insulates the substrate 402 from the wiring aluminum 405 and the like, the intermediate insulating film 409 insulates the wiring aluminum 405 from the light shielding aluminum 411 and the like, and the protective film 410 protects the light shielding aluminum 411. The first insulating film 408, the intermediate insulating film 409, and the protective film 410 are formed of, for example, a silicon thermal oxide film or a silicon CVD oxide film.

  Next, the operation of the illuminance sensor 401 according to this embodiment configured as described above will be described. Incident light is transmitted through the sealing resin 416, long-wavelength light is removed by the optical filter 407, and only visible light passes through the optical filter 407. The visible light that has passed through the substrate 402 passes through the substrate 402 while being attenuated. The detection unit 403 is entered. The light detection unit 403 generates a voltage according to the amount of incident visible light to generate a light detection signal, and the light detection signal is transmitted to the signal processing circuit 404 via wiring aluminum (not shown). In 404, processing such as amplification is performed. The light detection signal is transmitted to an external device via the wiring aluminum 405, the flip mounting bump 412, and the electrode 413.

  This optical filter 407 is formed on the substrate back surface 415, and no bonding pad is arranged on the substrate back surface 415. Therefore, even if the optical filter 407 is misaligned, the bonding pad is contaminated and the wire bonding is defective. And the yield is increased. Further, since no bonding pad is provided on the back surface 415 of the substrate, the area covering the optical filter 407 can be widened, and long wavelength light can be sufficiently removed, so that the detection failure of visible light is reduced. . In this way, by using the illuminance sensor of this embodiment, it is possible to reduce the detection failure of visible light, realize highly reliable illuminance detection, and realize a highly reliable lighting device. Become.

  As described above, according to the present invention, a system in which asynchronous communication and synchronous communication are compatible can be easily constructed, communication efficiency can be increased, and the system can be used as a high-function lighting device and lighting control system.

11 AC_Line (AC power supply)
12, 13, 14 SU (electronic ballast) 1, 2, 3
15, 16, 17 Load lamps La1, 2, 3
18 Master_Controller (high-level control device)
19 Data_Bus (Asynchronous communication line)
21 Full-wave rectifier circuit DB
22 Inverter circuit INV
23 Control unit CTRL
24 AC power supply phase detection means PD
25 Microcomputer MPU
26 Communication timing determining means DTC
27 Device address ADR
28 Communication data CDC
29 Communication controller CC1
31 SSU1 (sensor unit)
32 Sensor S1
33 Detection circuit DET
DESCRIPTION OF SYMBOLS 101 Power supply terminal part 102 Lighting device 103 Storage battery 102a Input part 102b Rectifier circuit 102c DC / DC converter 102d Charging circuit 102e Switch 102f Lighting circuit 102g Output part 102h Control circuit 201 Power supply circuit 202a-202d LED (light emitting diode)
203 Abnormality detection unit 204 Step-down chopper circuit 205 Chopper control unit 206 Constant current circuit 207 Metal plate 209 Heat radiation substrate 213 Switch control unit 351 Rectifier 352 Step-down converter 353 Full-bridge inverter 354 Current detection circuit 355 Control circuit 401 Illuminance sensor 402 Substrate 403 Light detection Unit 404 signal processing circuit 405 wiring aluminum 406 bonding pad 407 optical filter 408 first layer insulating film 409 intermediate insulating film 410 protective film 411 light shielding aluminum 412 flip mounting bump 413 electrode 415 substrate back surface 421 substrate surface

Claims (21)

Synchronization signal detection means for receiving periodic electrical signals or optical signals;
A device address means having a preset device address;
Data detection means for detecting and holding numerical data generated in the apparatus;
An asynchronous communication means for performing asynchronous communication between a plurality of devices;
A communication timing determining means for inputting the output signal of the synchronous signal detecting means and the device address, and for determining the communication timing of the asynchronous communication means;
An illumination device that transmits and receives data of a data detection unit via asynchronous communication in accordance with the timing of the communication timing determination unit. The lighting device according to claim 1,
An illumination device connected to an AC power source and inputting a voltage signal of the AC power source to the synchronization signal detecting means. The lighting device according to claim 1,
A lighting device in which a plurality of higher-order and lower-order devices are connected to an asynchronous communication line, and transmission is not performed at a communication timing determined from all values other than its own address value in the device address value. The lighting device according to claim 1,
The lighting device in which the operation of the communication timing determining means is changed via an asynchronous communication line. The lighting device according to claim 4,
The operation of the communication timing determining means is a lighting device set according to the type of device. The lighting device according to claim 1,
An illumination device that changes an operation of the communication timing determination unit when a transmission collision is detected at a timing output by the communication timing determination unit. The lighting device according to claim 6,
An illumination device that advances the next communication timing when a collision is detected from the middle of transmission at the timing output by the communication timing determination means, and delays the next communication timing when a collision is detected from the beginning of transmission. The lighting device according to claim 6,
An illumination device that periodically changes the timing output by the communication timing determination means. The lighting device according to claim 1,
A lighting device in which a signal for transmitting / receiving data of the data detection unit via asynchronous communication according to the timing of the communication timing determination unit is a signal different from the asynchronous communication. The lighting device according to claim 9,
A signal for transmitting and receiving data of the data detection means via asynchronous communication according to the timing of the communication timing determination means is divided into a plurality of data. The lighting device according to claim 2,
Power line signal receiving means for receiving a power line carrier signal in which a communication signal is superimposed on the AC power source,
An illumination device that changes the operation of the communication timing determination unit, the device address, or the operation of the asynchronous communication unit according to information detected by the power line signal receiving unit. The lighting device according to claim 2,
An illumination device that changes the operation of the communication timing determining means according to the voltage of the AC power supply. The lighting device according to claim 2,
A lighting device that detects a signal transmitted according to the timing of a communication timing determination unit of a lower-order or higher-order device and changes its operation. The lighting device according to claim 2,
A lighting device that transmits and receives digital data related to the phase angle of an AC power supply. The lighting device according to claim 14,
Comprising phase data means;
At the time of transmission, the timing of the communication timing determination means transmits the data of the data detection means via asynchronous communication at a specific AC power source phase angle according to the value of the phase data means,
An illumination device that sets the phase data of the synchronization signal detecting means at the timing of the received signal in the phase data means at the time of reception. The lighting device according to claim 14,
A lighting device in which the relationship between the phase angle of the AC power supply and the digital data is set according to the number of devices connected to the asynchronous communication line. The lighting device according to claim 14,
A lighting device in which the relationship between the phase angle of the AC power supply and the reception of transmission is attached. The lighting device according to claim 2,
A lighting device that operates the device in synchronization with the AC power supply phase. The lighting device according to claim 2,
A lighting device having a test mode for measuring a phase of an AC power supply and a signal delay of an asynchronous communication line. The lighting device according to claim 2,
An illumination device that changes the operation of the communication timing determining means when an abnormality occurs in the AC power supply. A lighting device according to claim 2,
A lighting device having a function of detecting a signal transmitted according to the timing of a communication timing determination unit of a lower device and monitoring the state of the lower device depending on the presence or absence of the signal.

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