JP2011070947A - Led lamp lighting device - Google Patents

Abstract

The lighting state of an LED lamp can be monitored, and the LED lamp can be turned on in a fail-safe mode even when a device breaks down.
A fail-safe unit of a failure detection / interface circuit includes:
An abnormality in the lighting control circuit 23 is detected by self-diagnosis of the lighting control circuit 23 that controls the lighting of the LED lamp 22 by inputting the power output from the AC constant current power supply device 11 through the rubber-coated insulating transformer 12. Or when the failure detection unit 46 of the transmission device 19 that communicates with the monitoring control device 20 detects a failure of the transmission device 19 or when the transmission signal from the monitoring control device 20 becomes abnormal. When the abnormality or interruption of the transmission signal is detected by the signal abnormality detection unit 47, the lighting state of the LED lamp is forcibly shifted to a preset fail-safe mode state and held.
[Selection] Figure 1

Description

  The present invention relates to an LED lamp lighting device for lighting an LED lamp used in an airport or the like.

  In general, an incandescent bulb such as a halogen bulb is used as a light source for a lamp used in an airport or the like (see, for example, Patent Document 1). These lamps are connected in series to the output terminal of the AC constant current power source, and lighting power is supplied from the AC constant current power source. In order to maintain a good appearance of the sign even if the ambient brightness changes, the lamp switches the output current of the AC constant current power source according to the ambient brightness so that the lamp has a predetermined luminous intensity. Controlled to operate at a ratio.

  In this case, the output current of the AC constant current power source is switched according to the characteristics when the light source is an incandescent light bulb, for example, by arranging an output current switching tap in the AC constant current power source and setting the luminous intensity ratio to 100%. , 25%, 5%, 1% and 0.2%, as desired.

  On the other hand, the thing using LED as a light source is also developed recently (for example, refer patent document 2). Even if an LED is used as the light source, the power source for lighting is supplied from the AC constant current power source in the same manner as in the case of the heat-generating bulb. Therefore, when the LED is used as the light source, the AC constant current is changed to DC. Further, the characteristics of the incandescent current are converted into the characteristics of the LED to obtain a lighting power source for the LED.

  FIG. 2 is a configuration diagram of a conventional bulb-type lamp lighting device using an incandescent bulb as a light source. As shown in FIG. 2, an AC constant current is input from the AC constant current power supply (CCR) 11 to the terminal controller 13 via the rubber-covered insulated transformer 12, and lighting power is supplied to the light bulb type lamp 14. . The terminal controller 13 is configured so that the control circuit 15 can perform on / off control of the switch 16 in the terminal controller 13, and the bulb-type lamp device 14 can be turned on / off by the on / off control of the switch 16. It is like that. When the switch 16 is turned on, the light bulb type lamp 14 is turned off, and when the switch 16 is turned off, the light bulb type lamp 14 is turned on.

  Further, the control circuit 15 inputs the AC constant current supplied from the AC constant current power supply (CCR) 11 detected by the current detector 17 and the voltage detected by the voltage detector 18 and inputs these current and voltage. While monitoring, the lighting state of the bulb-type lamp 14 is monitored. The control circuit 15 of the terminal controller 13 communicates the monitoring information of the terminal controller 13 to the monitoring controller 20 via the transmission device 19.

  When an abnormality occurs in the communication system of the transmission device 19 or the lighting power supply circuit, the control circuit 15 controls the bulb-type lamp in the fail safe mode. Fail-safe mode control refers to control that operates in a safe direction as a control system when a device fails. For example, if there is a possibility of giving wrong information to the pilot if the light goes out when a failure occurs in the device that controls the light on / off at the airport, the light should be turned on in fail-safe mode control. Control. In this way, when a device that performs lighting / extinguishing control fails, fail-safe control is performed in a direction that does not cause danger to the aircraft. This fail-safe mode control function is an important function that greatly affects airport safety. It is.

  Next, FIG. 3 is a block diagram of a conventional LED lamp lighting device using an LED as a light source. As shown in FIG. 3, an AC constant current is input from the AC constant current power supply device (CCR) 11 to the LED type lamp lighting device 21 via the rubber-covered insulated transformer 12, and in the LED type lamp lighting device 21, The AC constant current is converted to DC, and the characteristics of the incandescent current are converted into the characteristics of the LED to obtain the LED lighting power source, and the lighting power source is supplied to the LED lamp 22.

  That is, in the lighting control circuit 23 of the LED type lamp lighting device 21, the AC constant current is converted into DC by the DC power supply circuit 24, and the DC constant voltage is applied to the LED type lamp 22 via the overvoltage protection circuit 25 and the switch circuit 26. Supply. The overvoltage protection circuit 25 detects an overvoltage generated in the lighting power supply circuit when the LED has an open failure (disconnection failure), and stops the operation of the LED lamp lighting device 21 when an overvoltage is detected. It is. The switch circuit 26 is controlled based on a command from the switch control circuit 27, and the switch control circuit 27 converts the incandescent current characteristic into the LED characteristic to control the lighting current of the LED.

JP 7-237598 A JP 2006-139755 A

  In the case of a bulb-type lamp, when an abnormality has occurred by the terminal controller 13, the bulb-type lamp can be switched to the fail-safe mode by turning the switch 16 on and off. In the case of 22, the lighting control of the LED lamp device 22 is performed by the switching control circuit 27 via the switch circuit 26, so that it may not be possible to switch to the fail safe mode when the lighting control circuit 23 is abnormal.

  Since the AC constant current power supply 11 is a constant current power supply, a high voltage is generated when there is no load. However, the lighting control circuit 23 is provided with an overvoltage protection circuit 25 for protecting the circuit. Since the operation of the overvoltage protection circuit 25 causes the lighting control circuit 23 to stop operating, even if the LED of the LED-type lamp 22 fails in an open state, the rubber-covered insulated transformer 11 like the bulb-type lamp 14 can be used. A high voltage is not generated on the secondary side, and the lighting state of the LED type lamp 22 cannot be monitored. Further, it is impossible to check the operation state in the lighting control circuit 23 of the LED lamp 22 and monitor the lighting abnormality, circuit abnormality, and load abnormality.

  An object of the present invention is to provide an LED lamp lighting device that can monitor the lighting state of an LED lamp and can turn on the LED lamp in the fail-safe mode even when the device fails.

  An LED type lamp lighting device according to the invention of claim 1 includes a lighting control circuit for controlling the lighting of the LED type lamp by inputting electric power output from an AC constant current power supply device through a rubber-covered insulated transformer; A transmission device that communicates with the control device; and a failure detection / interface circuit provided between the lighting control circuit and the transmission device, wherein the failure detection / interface circuit is a self-diagnosis of the lighting control circuit. When an abnormality of the lighting control circuit is detected by the above, or when a failure of the transmission device is detected by the failure detection unit of the transmission device, or when a transmission signal from the monitoring control device becomes abnormal When the transmission signal abnormality detecting unit detects abnormality or interruption of the transmission signal, the lighting state of the LED type lamp is set in a fail-safe mode state set in advance. Forcibly migrated comprising the failsafe section holds.

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.

  The AC constant current power supply device outputs a constant current to an LED lamp as a plurality of loads connected in series, and the output current is switched by a switching tap. The light intensity can be turned on at a predetermined ratio (light intensity ratio). The switching tap is switched at a plurality of stages, for example, and the output current changes and the luminous intensity changes according to the stage of the switching tap.

  The prescribed luminous intensity ratio is to maintain the sign lamp's luminous intensity at that time for the purpose of always maintaining the appearance of the sign lamp even when the brightness of the surroundings where the LED lamp is installed changes. It is determined to control according to the brightness. Usually, the predetermined luminous intensity ratio is determined based on the specific luminous intensity-specific current characteristic different from the specific luminous intensity-specific current characteristic of the LED of the LED type lamp, for example, the specific luminous intensity-specific current characteristic of an incandescent lamp such as a halogen bulb. ing.

  The lighting control circuit rectifies the output current from the AC constant current power supply device, adjusts the voltage applied to the LED of the LED type lighting device to be constant, and compares the LED ratio based on the output current from the AC constant current power supply device. This is converted into luminous intensity-specific current characteristics, and the duty of the current flowing through the LED of the LED type lamp is controlled.

  The fault detection / interface circuit is provided between the transmission device that communicates with the monitoring control device and the lighting control circuit. When an abnormality is detected in the transmission signal of the lighting control circuit, the transmission device, and the transmission device, the LED type lamp The lighting state of the device is forcibly shifted to a preset fail-safe mode state and held. The fail-safe mode state refers to a state in which the device operates in a safe direction when the device fails or when a signal becomes abnormal.

  According to a second aspect of the present invention, there is provided the LED type lamp lighting device according to the first aspect of the present invention, wherein the failure detection / interface circuit fails when an auxiliary power supply circuit for supplying control power to the lighting control circuit fails. For an LED type lamp whose safe mode state is a lighting state, a power supply switching unit is provided for supplying lighting power to the LED type lamp from a secondary side of the rubber-covered insulated transformer.

  In the present invention, when the auxiliary power circuit of the lighting control circuit fails, the lighting control circuit can control the duty of the current flowing through the LED of the LED type lighting device with respect to the LED type lighting device in which the fail safe mode state is the lighting state. Therefore, the lighting power is directly supplied to the LED lamp from the secondary side of the rubber-covered insulated transformer.

  According to a third aspect of the present invention, there is provided the LED type lamp lighting device according to the first or second aspect of the invention, wherein the failure detection / interface circuit is configured as a lighting abnormality when a current to the LED type lamp becomes abnormal. An alarm is output to the monitoring control device via the transmission device.

  In the present invention, for example, a failure detection / interface circuit is provided with a current abnormality detection unit for monitoring a current to the LED lamp, and when the current to the LED lamp deviates from a predetermined range, a lighting abnormality is detected. Judgment is made.

  According to a fourth aspect of the present invention, there is provided the LED type lamp lighting device according to any one of the first to third aspects, wherein the failure detection / interface circuit includes an input current value of the lighting control circuit and the LED type lamp. When a preset on-duty of the current to be supplied does not match, an alarm is output to the monitoring control device via the transmission device as a circuit abnormality.

  The present invention provides, for example, an on-duty abnormality detection unit that monitors a preset on-duty of the current supplied to the LED type lamp in the failure detection / interface circuit, and the input current value of the lighting control circuit and the LED type A circuit abnormality is determined when the preset on-duty of the current supplied to the lamp does not match.

  According to a fifth aspect of the present invention, there is provided the LED lamp lighting device according to any one of the first to fourth aspects, wherein the failure detection / interface circuit has an abnormal input current value of the lighting control circuit. When an error is detected, an alarm is output to the supervisory control device via the transmission device as a circuit abnormality.

  In the present invention, for example, the failure detection / interface circuit includes an input current abnormality detection unit that monitors the input current value of the lighting control circuit, and detects that the input current value of the lighting control circuit deviates from a predetermined range. Sometimes it is determined that the circuit is abnormal.

  According to a sixth aspect of the present invention, there is provided the LED type lamp lighting device according to any one of the first to fifth aspects, wherein the failure detection / interface circuit is configured such that when the secondary side of the lighting control circuit is unloaded. An alarm is output to the monitoring and control device via the transmission device as a load abnormality.

  In the present invention, for example, a failure detection / interface circuit is provided with a no-load detection unit that monitors no load on the secondary side of the lighting control circuit, and when the secondary side of the lighting control circuit becomes no load, a load abnormality is detected. Judgment is made. The no-load on the secondary side of the lighting control circuit is determined by, for example, the operation of the overvoltage protection circuit.

  According to a seventh aspect of the present invention, there is provided the LED lamp lighting device according to any one of the first to sixth aspects, wherein the failure detection / interface circuit uses the individual address or group address of the LED lamp. When the address setting unit to be stored and the command signal from the monitoring control device match the address set in the address setting unit, the LED type lamp is turned on or off based on the command signal from the monitoring control device. And an on / off control unit.

  The present invention makes it possible to control the lighting or extinguishing of an LED lamp based on a command signal from a monitoring control device.

  According to the first aspect of the present invention, when an abnormality is detected in the lighting control circuit, the transmission device, and the transmission signal of the transmission device, the lighting state of the LED lamp is forcibly shifted to the preset fail-safe mode state. Therefore, the reliability with respect to lighting can be improved. According to invention of Claim 2, even if it is a case where control power supply fails, the power supply for lighting can be supplied to a LED type lamp.

  According to the invention of claim 3, the lighting abnormality of the LED type lamp can be monitored. According to the inventions of claims 4 and 5, the circuit abnormality of the lighting control circuit can be monitored. According to the invention of claim 6, The load abnormality of the lighting control circuit and the LED type lamp can be monitored. According to the seventh aspect of the present invention, the lighting control of the LED lamp can be performed from the monitoring control device.

The block diagram of the LED type lamp lighting device concerning embodiment of this invention. The block diagram of the conventional bulb-type lamp lighting device which used the incandescent bulb as a light source. The block diagram of the conventional LED type lamp lighting device which used LED for the light source.

  Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of an LED type lamp lighting device according to an embodiment of the present invention. An AC constant current is input from the AC constant current power supply (CCR) 11 to the LED lamp lighting device 21 via the rubber-covered insulated transformer 12. The LED lamp lighting device 21 includes a lighting control circuit 23 that controls turning on and off the LED lamp 22, a transmission device 19 that communicates with the monitoring control device 20, and a lighting control circuit 23 and the transmission device 19. The fault detection / interface circuit 28 is provided.

  The lighting control circuit 23 inputs an AC constant current from the AC constant current power supply device 11 through the rubber-coated insulating transformer 12 and supplies the AC constant current to the full-wave rectifier circuit 29 and the insulating current transformers 30 and 31. The full-wave rectification circuit 29 performs full-wave rectification on the AC constant current and outputs it to the load adjustment circuit 32.

  An auxiliary power supply circuit 33 is connected to the insulated current transformer 30, generates auxiliary power for the lighting control circuit 23, and supplies auxiliary power to each circuit of the lighting control circuit 23. An input current detection circuit 34 is connected to the insulation current transformer 31. The input current detection circuit 34 detects the effective value of the current from the AC constant current power source input via the insulation current transformer 31, and detects the level value. Output to. This input current value represents the luminous intensity ratio, and the level determination circuit 35 determines this luminous intensity ratio and outputs it to the luminous intensity switching circuit 36. The luminous intensity switching circuit 36 converts the alternating constant current of the specific luminous intensity-specific current characteristic of the incandescent bulb into a current based on the specific luminous intensity-specific current characteristic of the LED, and outputs it to the PWM switch circuit 37 that performs on-duty control. The PWM switch circuit 37 performs duty control so that the current flowing through the LED of the LED lamp device 22 becomes the current converted by the luminous intensity switching circuit 36, and outputs it to the LED of the LED lamp device 22 via the power switch 38. To do. Thereby, it controls so that the light output of LED of the LED type lamp device 22 becomes a predetermined luminous intensity ratio.

  On the other hand, the load adjustment circuit 32 sets the predetermined output voltage to 0 when the LED lamp 22 is in the extinguishing mode by feedback control. The lighting current detection circuit 40 detects the lighting current supplied to the LED of the LED lamp 22 by the PWM switch circuit 37, feeds back the load adjustment circuit 32 via the feedback control circuit 41, and supplies it to the LED lamp 22. To keep the current to be constant.

  Further, the lighting control circuit 23 includes an overvoltage protection circuit 25 that detects that the secondary side of the lighting control circuit 23 has become unloaded and operates the safety circuit to protect the lighting control circuit 23 from overvoltage. Is provided. For example, when the LED of the LED lamp 22 has an open failure (disconnection failure) or when the wiring to the LED lamp 22 is disconnected, an overvoltage is generated on the secondary side of the lighting control circuit 23. The overvoltage protection circuit 25 is activated by the occurrence of the overvoltage. Further, the lighting control circuit 23 is provided with an auxiliary power circuit failure detection unit 43 that detects an abnormality of the auxiliary power circuit 33.

  The lighting control circuit 23 is connected to the transmission device 19 via a failure detection / interface circuit 28. Further, the transmission device 19 is connected to the monitoring control device 20 via the communication connector 44, and is connected to the downstream LED type lamp lighting control device 21 via the communication connector 45. The transmission device 19 communicates with the monitoring control device 20 and transmits a signal from the monitoring control device 20 to the failure detection / interface circuit 28. Further, the state of the lighting control circuit 23 is input via the failure detection / interface circuit 28, and the information is transmitted to the monitoring control device 20. The transmission device 19 is provided with a failure detection unit 46 that detects a failure of the transmission device 19.

  Next, the failure detection / interface circuit 28 is provided with a transmission signal abnormality detection unit 47 that detects that a transmission signal communicated from the monitoring control device 20 via the transmission device 19 becomes abnormal. As an abnormality in the transmission signal, for example, when the wiring between the transmission device 19 and the failure detection / interface circuit 28 is disconnected or disconnected, or the transmission signal abnormality detection unit 47 detects an abnormality or a break in the transmission signal. Such as when.

  A fail safe unit 48 is provided in the transmission device 19. When the lighting control circuit 23, the transmission device 19, and the transmission signal become abnormal, the fail-safe unit 48 forcibly shifts the lighting state of the LED lamp 22 to a preset fail-safe mode state and holds it. Is. That is, the fail safe unit 48 is connected to the failure detection unit 46 and the transmission signal abnormality detection unit 47 of the failure detection / interface circuit 28, and the failure detection unit 46 or the transmission signal abnormality detection unit 47 of the transmission device 19 When a failure is detected, a fail safe mode command signal is output to an on / off control unit 55, which will be described later, and the load adjustment circuit 32 is controlled in accordance with the ON / OFF signal output from the on / off control unit 55. The lighting state of 22 is forcibly shifted to a preset fail-safe mode state and held.

  Here, the fail safe mode state of its own LED type lighting device 22 is set in the fail safe unit 48 in advance. This is because the fail-safe mode state differs depending on the installation location of the LED type lighting device 22. For example, when the fail-safe mode state of the own LED-type lamp 22 is the lighting state, the fail-safe unit 48 has its own LED-type when the lighting control circuit 23, the transmission device 19, and the transmission signal become abnormal. The lamp 22 is turned on. On the other hand, when the fail safe mode state of the own LED type lighting device 22 is the extinguished state, the fail safe unit 48, when the lighting control circuit 23, the transmission device 19, and the transmission signal become abnormal, The LED type lamp 22 is turned off.

  Although not shown, when the lighting control circuit 23, the transmission device 19, and the transmission signal abnormal reset request data are received from the monitoring control device 20, the fail safe unit 48 may cancel the fail safe mode state. Good.

  Further, the failure detection / interface circuit 28 is a power source that switches from the PWM switch 37 to the secondary side of the rubber-covered insulation transformer 12 when a failure signal from the auxiliary power circuit failure detection unit 43 of the lighting control circuit 23 is input. A switching unit 49 is provided. When the auxiliary power supply circuit 33 breaks down, the light intensity switching circuit 36 and the PWM switch 37 cannot operate normally, so that the lighting power supply to the LED lamp 22 is not normal. Therefore, for the LED type lamp 22 in which the fail safe mode state is the lighting state, the power source switching unit 49 switches the power source switching switch 38 from the PWM switch 37 to the secondary side of the rubber-coated insulating transformer 12 to thereby perform rubber-coated insulation. The lighting power is supplied directly to the LED lamp from the secondary side of the transformer 12. As a result, the LED lighting device 22 is supplied with lighting power that is not subjected to on-duty control, but the LED lighting device 22 can maintain the lighting state.

  Next, the failure detection / interface circuit 28 has a lighting state storage unit 50 that stores the lighting current of the LED lamp 22 detected by the lighting current detection circuit 40, and the LED lamp 22 is turned on for a predetermined period. The state is updated and stored in the lighting state storage unit 50. Further, the lighting current of the LED lamp 22 detected by the lighting current detection circuit 40 is transmitted to the monitoring controller 20 via the transmission device 19 as the lighting state of the LED lamp 22. Further, the lighting current of the LED lamp 22 detected by the lighting current detection circuit 40 is input to the current abnormality detector 51. When the lighting current of the LED lamp 22 deviates from a predetermined value range, the current abnormality detector 51 is, for example, about ±± when the lighting current to the LED lamp 22 is normal when the feedback control circuit 41 or the like fails. When it becomes 25% or more, a lighting abnormality alarm is transmitted to the monitoring control device 20 via the transmission device 19.

  Next, the on-duty abnormality detection unit 52 of the failure detection / interface circuit 28 detects the input current value of the lighting control circuit 23 detected by the input current detection circuit 34 of the lighting control circuit 23 and the LED type lamp from the light intensity switching circuit 36. From the relationship with the current supplied to the lamp 22, it is monitored whether or not the current supplied to the LED lamp 22 matches the preset on-duty. An alarm is output to the monitoring control device 20 via the device 19. Similarly, the input current abnormality detection unit 56 of the failure detection / interface circuit 28 uses the transmission device 19 as a circuit abnormality when the input current value of the lighting control circuit 23 becomes abnormal out of a predetermined range. Then, an alarm is output to the monitoring control device 20.

  Further, the no-load detection unit 53 of the failure detection / interface circuit 28 outputs an alarm to the monitoring control device 20 via the transmission device 19 as a load abnormality when the secondary side of the lighting control circuit 23 becomes no load. The fact that the secondary side of the lighting control circuit 23 has no load is detected by the operation of the overvoltage protection circuit 25 of the lighting control circuit 23.

  Thus, when the input current value to the lighting control circuit 23 becomes abnormal, when the PWM control by the light intensity switching circuit 36 becomes abnormal, when the lighting current to the LED lamp 22 becomes abnormal, Further, when the secondary side of the lighting control circuit 23 becomes unloaded, the failure detection / interface circuit 28 determines that there is an abnormality, and outputs an alarm to the monitoring control device 20 via the transmission device 19.

  Next, the address setting unit 54 of the transmission device 19 stores the individual address and group address of its own LED type lamp 22. The individual address is an address for identifying the LED lamp 22 of its own, and the supervisory control device 20 identifies the LED lamp 22 with this individual address and controls the lighting. In addition, when the group address of the LED lamp 22 and the other LED lamps 22 is mixed and arranged as the same indicator lamp, the grouped LED lamps 22 are arranged. The monitoring controller 20 identifies the LED lamps 22 grouped by this group address and controls turning on and off.

  That is, when the command signal from the monitoring control device 20 matches the address set in the address setting unit 54, the on / off control unit 55 of the transmission device 19 uses its own LED type based on the command signal from the monitoring control device 20. The lamp 22 is controlled to be turned on / off.

  Thus, each LED type lighting device 21 can be set with an individual address and a group address, and can be turned on / off individually or in groups. Even when the power supply is lost, the individual address and group address are held in the address setting unit 54, the fail safe mode is held in the fail safe unit 48, and the lighting state of the LED type lamp is stored in the lighting state storage unit 50. I have it.

  According to the embodiment of the present invention, by integrating the lighting control circuit 23, the failure detection / interface circuit 28, and the transmission device 19, it is possible to easily monitor the failure of the lighting control circuit 23. In addition, a fail-safe control is possible when the lighting control circuit 23 and the transmission signal system break down, improving the reliability of the LED-type lamp for lighting, and improving the safety at the airport. Can be provided.

DESCRIPTION OF SYMBOLS 11 ... AC constant current power supply device, 12 ... Rubber covering insulation transformer, 13 ... Terminal controller, 14 ... Light bulb type lamp, 15 ... Control circuit, 16 ... Switch, 17 ... Current detector, 18 ... Voltage detector, DESCRIPTION OF SYMBOLS 19 ... Transmission apparatus, 20 ... Monitoring control apparatus, 21 ... LED type lamp lighting apparatus, 22 ... LED type lamp, 23 ... Lighting control circuit, 24 ... DC power supply circuit, 25 ... Overvoltage protection circuit, 26 ... Switch circuit, DESCRIPTION OF SYMBOLS 27 ... Switch control circuit, 28 ... Fault detection and interface circuit, 29 ... Full wave rectification circuit, 30, 31 ... Insulation current transformer, 32 ... Load adjustment circuit, 33 ... Auxiliary power supply circuit, 34 ... Input current detection circuit, 35 ... Level determination circuit 36 ... Luminance switching circuit 37 37 PWM switch circuit 38 Power supply switch 39 39 Smoothing circuit 40 Lighting current detection circuit 41 Feedback control circuit 43 Auxiliary power Circuit failure detection unit, 44, 45 ... communication connector, 46 ... failure detection unit, 47 ... transmission signal abnormality detection unit, 48 ... fail safe unit, 49 ... power supply switching unit, 50 ... lighting state storage unit, 51 ... current abnormality detection 52 ... On-duty abnormality detection unit, 53 ... No load detection unit, 54 ... Address setting unit, 55 ... On / off control unit, 56 ... Input current abnormality detection unit

Claims (7)

A lighting control circuit for controlling the lighting of the LED lamp by inputting power output from the AC constant current power supply device through a rubber-coated insulating transformer;
A transmission device that communicates with the supervisory control device;
A failure detection / interface circuit provided between the lighting control circuit and the transmission device;
The failure detection / interface circuit, when an abnormality of the lighting control circuit is detected by self-diagnosis of the lighting control circuit, or when a failure of the transmission device is detected by a failure detection unit of the transmission device, or A fail-safe mode in which the lighting state of the LED-type lamp is set in advance when an abnormality or interruption of the transmission signal is detected by the transmission signal abnormality detection unit that detects that the transmission signal from the monitoring control device has become abnormal An LED-type lamp lighting device comprising a fail-safe portion forcibly shifting to a state and holding the state. When the auxiliary power supply circuit that supplies the control power of the lighting control circuit fails, the failure detection / interface circuit is configured so that the rubber-covered insulated transformer The LED-type lamp lighting device according to claim 1, further comprising a power supply switching unit that supplies a lighting power source to the LED-type lamp from a secondary side. The failure detection / interface circuit outputs an alarm to the monitoring control device via the transmission device as a lighting abnormality when an electric current to the LED type lamp becomes abnormal. The LED type lamp lighting device according to 2. When the failure detection / interface circuit does not match the input current value of the lighting control circuit and the preset on-duty of the current supplied to the LED-type lamp device, the fault detection / interface circuit passes through the transmission device as a circuit abnormality. 4. The LED lamp lighting device according to claim 1, wherein an alarm is output to the monitoring control device. The failure detection / interface circuit outputs an alarm to the monitoring control device via the transmission device as a circuit abnormality when detecting that an input current value of the lighting control circuit becomes abnormal. The LED type lamp lighting device according to any one of claims 1 to 4. 2. The failure detection / interface circuit outputs an alarm to the monitoring control device via the transmission device as a load abnormality when the secondary side of the lighting control circuit becomes no load. The LED type lamp lighting device according to any one of 5. The failure detection / interface circuit includes an address setting unit that stores an individual address and a group address of the LED lamp, and a command signal from the monitoring control device matches an address set in the address setting unit. An on / off control unit for turning on or off the LED lighting device based on a command signal from the monitoring and control device is provided. apparatus.

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