JPH0765961A - Series load control device, airport sign light control device and airport sign light device - Google Patents

Abstract

(57) [Summary] (Modified) [Configuration] A plurality of saturable devices 21 to 2n provided in series between the output terminals of the constant current power supply device 1 and each of these saturable devices 2
A plurality of load devices 31 to 3n energized by the output of the constant current power supply device 1 via 1 to 2n, and these load devices 31
To 3n, a first switch device 41 that can control power supply to the corresponding load device 31 in series, and the load device 31 and the first switch device 4 when viewed from the saturable device 21.
First switch device 41 provided in parallel with the serial circuit of No. 1
The second switch device 51 that is turned on before turning off the
And an output control device 8 that outputs a control signal to the second switch devices 41 and 51. [Effect] Individual control is possible, and the load current can be almost completely cut off by the first switch device in the load stopped state. Moreover, since the second switch device is turned on before the first switch device is turned off, the saturable device is not brought into a load release state.

Description

Detailed Description of the Invention

[Object of the Invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a serial load control device for supplying power from a constant current power supply device to load devices provided in series such as an airport sign light, and more particularly to an airport sign light control. The present invention relates to a device, and further to an airport marker light device.

[0003]

2. Description of the Related Art Conventionally, Japanese Patent Publication No. 62-21160 has been proposed as a serial load control device, for example, an airport marker light control device. This one is provided with a blinking controller for each indicator light, and by controlling these blinking controllers according to a transmission signal, the indicator lights provided in series are stopped line indicator lights,
It is possible to control the blinking of each block so as to correspond to the applications that are required at that time, such as a center line lamp and a destination indicator lamp.

Further, as another conventional example, Japanese Patent Laid-Open No. 4-62793
The one of the gazette is proposed. In this system, a slave station for detecting disconnection is provided in each marker lamp, and the detected content is transmitted to the master station so that the master station can judge and display the content.

[0005]

The Japanese Patent Publication No. 62-21160 discloses only a simple control of simply turning on and off the blocked indicator lamp group. In this device, the triacs of the respective blinking controllers are provided in parallel with the lamps of the airport beacon lights so that the triacs are turned on when the triacs are turned on and the triacs are turned off when the lamps are turned on. Further, a signal electric wire is provided for each group of marker lights that are blocked by a control operation device that controls each of the above blinking controllers, and a blinking signal is transmitted to this signal electric wire.

However, in the Japanese Patent Publication No. 62-21160, the lamp may slightly emit light due to the forward drop voltage of the triac, and a complete extinguished state may not be obtained. In addition, if a blink control element such as a triac is provided in series with the lamp and the blink control element is turned off to turn off the lamp,
At this time, it is the same as opening the load for the insulating transformer as the saturable device. Therefore, the saturable device saturates to generate an excessive voltage, resulting in power loss, and heat generation, which causes a problem of deterioration in life.

The device disclosed in Japanese Patent Laid-Open No. 4-62793 has a function of detecting a core disconnection and cannot control each marker lamp.

According to the present invention, the load device can be finely controlled, the load device can be completely stopped when the power supply to the load device is stopped, and the overvoltage is not generated across the saturable device. An object of the present invention is to provide a serial load control device, an airport sign light control device, and an airport sign light device.

[Constitution of Invention]

[0010]

According to a first aspect of the present invention, there is provided a constant current power supply device, a plurality of saturable devices provided in series between output terminals of the constant current power supply device, and each of these saturable devices. A plurality of load devices that are energized at the output of the constant current power supply through a saturable device.

Further, each of the load devices is provided with a first switch device capable of controlling power supply in series, and the load device and the first switch device are connected in series when viewed from the output side of the saturable device. A second switch device is provided in parallel with the circuit that is turned on before the first switch device is turned off.

Further, there is provided a series load control device including an output control device for outputting a control signal to the first and second switching devices.

In the present invention, the saturable device is a device that saturates when the voltage of a predetermined value or more is applied and its impedance is zero or extremely reduced, and is, for example, a saturable transformer or a semiconductor element. (The same applies to the following inventions.).

The output control device which outputs the control signal to the first and second switch devices is a device which directly outputs the control signal to the first and second switch devices, and the first or second switch device. It also includes a device that outputs a control signal to one of the devices to form a control signal for another switch device in response to the control signal, that is, a device that indirectly outputs the control signal.

Further, in the present invention, the term "series or parallel" means that either the case where another electric component is interposed or the case where no other electric component is interposed is allowed (the same applies to the following inventions. ).

According to a second aspect of the present invention, a constant current power supply device, a plurality of saturable devices provided in series between the output terminals of the constant current power supply device, and each of these saturable devices are provided. A plurality of load devices energized by the output of the constant current power supply device, a terminal device provided corresponding to each load device, and a central control device for sending a control signal to each of these terminal devices. Have.

The terminal device is provided in series with each load device and is capable of controlling the power supply to the load device. The first switch device, the load device and the first switch device when viewed from the saturable device. A DC load control device comprising a second switch device which is provided in parallel with a series circuit and which is turned on before the first switch device is turned off, and a receiving device which receives the control signal.

In the present invention, the central control unit is defined by claim 1.
Similar to the invention described in (1), the control signal is directly or indirectly output to the first and second switch devices. When indirectly outputting the control signal, the terminal device forms another control signal based on one of the control signals.

The invention according to claim 3 has a control power supply device which is connected to an electrically closed circuit including the saturable device and a second switch device and which is supplied with power from the output side of the saturable device. The control power supply device supplies power to the first switch device and the like.

In the present invention, as means for extracting electric power from the output side of the saturable device, a transformer, a voltage dividing circuit, and the electrically closed circuit provided in parallel on the output side of the saturable device are used. It can be configured by an inserted current transformer or the like.

According to a fourth aspect of the present invention, the series load control device according to any one of the first to third aspects is provided with an opening detection device for the load device.

According to a fifth aspect of the present invention, in the serial load control device according to the fourth aspect, the second switch device is turned on when the load detection device detects the load release. .

According to a sixth aspect of the present invention, in the serial load control device according to any one of the second to fifth aspects, the terminal device is provided with an opening detection device for the load device, and is provided between the terminal device and the central control device. Thus, the control signal of the first switch device and the disconnection detection signal are transmitted and received.

According to a seventh aspect of the present invention, in the serial load control device according to any one of the first to sixth aspects, the load device is a light source of an airport sign light device. It is a lamp control device.

According to an eighth aspect of the present invention, a plurality of constant current power supply devices are energized at the output of the constant current power supply device through a plurality of saturable devices provided in series between output terminals of the constant current power supply device. An individual airport sign light device, wherein these airport sign light devices include a light source that is powered through the saturable device,
A first switching device provided in series with the light source and capable of controlling power supply to the light source, and provided in parallel with a series circuit of the light source and the first switching device when viewed from the output side of the saturable device. A second switch device that is turned on before the first switch device is turned off, and an electrically closed circuit that includes the saturable device and the second switch device, and is supplied with power from the output side of the saturable device. And a control power supply device for supplying electric power to the first and second switch devices and the like.

According to a ninth aspect of the present invention, the output terminals of the constant current power supply device are provided in series with each other between the output terminals of the constant current power supply device. Which are output controllable by an airport, and these airport beacon lights include a saturable device, a lamp body,
A light source provided in the lamp body and supplied with power via the saturable device, a first switch device provided in series with the light source and capable of controlling power supply to the light source, the light source viewed from the saturable device And an electrical circuit including a second switch device provided in parallel with the series circuit of the first switch device and turned on before turning off the first switch device, the saturable device, and the second switch device. The first circuit is connected to a closed circuit and is supplied with power from the output side of the saturable device.
The switch device, the control power supply device serving as the power source of the second switch device, and the terminal device having the receiving device for receiving the control signal from the central control device.

According to a tenth aspect of the present invention, in the airport sign light device according to the ninth aspect, the airport sign light includes a lamp temperature detecting device.

[0028]

According to the first aspect of the invention, the power supply to the load device is controlled by the first switch device, so that the load device can be operated, stopped or the output can be adjusted as desired. Then, the second switch device is turned on before the first switch device is turned off. As a result, the load does not open when viewed from the saturable device, and overvoltage does not occur across the saturable device.

According to the second aspect of the present invention, when the control signal is sent from the central control device to the terminal device corresponding to the desired load device, the terminal device controls the operation of the first switch device and the load device is controlled. Control power supply. As in the invention according to claim 1, no overvoltage is generated across the saturable device.

According to the third aspect of the present invention, since the control power supply device serving as the power supply of the first switch device is supplied with the output of the saturable device, it is not necessary to transmit the control power. Then, even during the stoppage period of the load device, an electrically closed circuit is formed by the second switch device, so that the control power supply device continues to be supplied with the output of the saturable device.

According to a fourth aspect of the invention, when the load device, for example, the light source is disconnected and the load is released, the load release detecting device detects this. By notifying this result by means such as display as required, the load device can be replaced quickly.

According to the fifth aspect of the invention, when the load device open detection device detects that the load device is open, the second switch device is turned on. Therefore, thereafter, an overvoltage may occur across the saturable device. Absent.

According to a sixth aspect of the present invention, the detection signal of the opening detection device is transmitted to the central control device. The central control device judges this result or from this detection signal to notify that the load device is opened. Therefore, the central monitoring side can monitor the open state of the plurality of load devices.

The invention according to claim 7 relates to a marker light for an airport, which is installed in a wide range such as a runway and an apron.
The same operation as that described for the inventions Nos. 6 to 6 is achieved.

The invention described in claim 8 is an airport sign light device for performing the same operation as that of the invention described in claim 6.

In the invention according to claim 9, further, by providing the terminal device in the airport sign light device according to claim 8, it becomes possible to send and receive control signals and the like to and from the central control device. .

According to a tenth aspect of the present invention, in addition to the ninth aspect, the temperature of at least one of the interior of the lamp body, the saturable device, the first switch device, and the second switch device is set. It is something to detect. This detection result is displayed, and the amount of power supplied to the airport sign light device is controlled according to the detection result.

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1 is a constant current power supply device. In the present embodiment, the phase control device 11, the output transformer 12, the current detection device 1
3. A conduction phase control 14 for controlling the phase control device 11 in a negative feedback manner in accordance with a detection signal of the current detection device 13 is mainly configured. Such a constant current power supply device 1
Are known and can be appropriately modified.

Reference numerals 21 to 2n denote saturable devices, which are provided in series between the output terminals of the constant current power supply device 1. In this embodiment, the saturable insulation transformer is used, but a parallel circuit of a constant voltage semiconductor element and an impedance element or the like may be used.

Reference numerals 31 to 3n denote load devices, which are provided so as to be fed from the constant current power supply device 1 via the saturable devices 2. Such a load device 3 is, for example, a light source for an airport marker light device, but may be any device that is suitable for constant current operation.

Reference numeral 41 is a first switch device provided in series with the load device 31 and capable of controlling power supply to the load device 31. The load device 31 can be operated, stopped, and output adjusted as desired. It is a thing. In FIG. 1, only the first switch device 41 is shown and the other load devices 32 to 3n are not shown, but similarly, the other load devices 32 to 3n are also provided correspondingly. (The same applies to the second switch device, the control power supply device, etc. described below). Such a first switch device 41 can be configured by a relay, a semiconductor switch, etc., but in the present embodiment, it is provided in series with the load device 31 with respect to the output of the saturable device 21. A switch 411 such as a relay and a control unit 412 of the switch 411.

Reference numeral 51 is a second switch device. The second switch device 51 is turned on immediately before the first switch 41 is opened to include the saturable device 21 and not include the load device 31 and the first switch device 41. Is formed. This second switch device 51 has a certain internal impedance so as not to short-circuit the output of the saturable device 21 when turned on,
It is preferable to have external impedance. Further, specifically, it comprises a thyristor 511 and a conduction control device 512 of this thyristor 511, and uses the forward impedance of the thyristor 511 as the internal impedance. In addition,
A contact such as a relay may be used, and in this case, a suitable impedance element may be provided in series. The second switch device 51 as described above is the same as the first switch device 4 described above.
1 is opened and turned on immediately before stopping the power supply to the load device 21. In such a case, the ON signal may be input to the conduction control device 512 at the same time as the opening signal is input to the control unit 412 or slightly earlier. Therefore, when viewed from the saturable device 21, the load is not released, an overvoltage is not generated across the saturable device 21, power loss is not increased, and abnormal heat is generated to deteriorate the life of the saturable device 21. There is no.

Reference numeral 61 is provided closer to the saturable device 21 side than the first switch device 41, and the saturable device 21 is provided while the power supply to the load device 31 is stopped by the first switch device 41. Is a control power supply device that is supplied with power and holds this output as operating power for the first switch device 41, the second switch device 51, and the like. The control power supply device 61 is supplied with power from the saturable device 21 even while the load device 31 is being supplied with power. It should be noted that the control power supply 6 can be supplied with a desired lowered voltage by having a certain impedance so that the output of the saturable device 21 is not short-circuited even if the second switch device 51 is turned on. .

In FIG. 1, the first switch device 41,
The second switch device 51 and the control power supply device 61 are made into a block as a terminal device and denoted by reference numeral 71. 72
7 to 7n are terminals having the same configuration corresponding to the other load devices 31 to 3n.

Reference numeral 8 denotes an output control device, which outputs a control signal for at least the first switch devices 41 to 4n. For example, it outputs signals for stopping, operating, and adjusting the output of each of the load devices 31 to 3n. In the present embodiment, the control signal is transmitted via the transmission line 9 provided on the central monitoring side and connected to each of the first switch devices 41 to 4n. The transmission line 9 is preferably an optical fiber in order to achieve high speed transmission, but may be an electric wire. Alternatively, the transmission line 9 may be omitted for wireless transmission.

Next, the operation of this embodiment will be described. Now, when a signal for stopping the load device 31 is output from the output control device 8, the controller 412 of the first switch device 41 is output.
Turns off the switch 411 (FIG. 2 (a)). Further, prior to this switch 411 being turned off, an on signal is output to the second switch device 51 (FIG. 2 (b)). The second switch device 51 inputs this ON signal, and the conduction control device 512 turns on the thyristor 511. For this reason, the load is not released when viewed from the saturable device 21, and no overvoltage is generated across the load.

Further, the control power supply device 61 is normally supplied with power by the output of the saturable device 21, but since the electric closed circuit is formed even after the first switch device 41 is turned off, it is continued. And then power is supplied. Therefore, the control power supply device 61 can stably supply power to the first switch device 41 and the like. The voltage value input to the control power supply device 61 differs depending on whether the first switch device 41 is on or off. Therefore, a constant voltage means can be appropriately provided, and such a constant voltage means can be appropriately configured by those skilled in the art.

Next, when adjusting the output of the load device 31, the ON period of the first switch device 41 is controlled within a predetermined cycle. For example, a phase controller is used as the switch device 41 to control conduction every half cycle of the AC voltage. When controlling conduction, even if it is controlled in stages,
It may be controlled continuously. Also in this case, the second switching device 51 is turned on before the first switching device 41 is turned off every half cycle.

Next, a second embodiment will be described with reference to FIG. The same or corresponding parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, a light source open detection device 101 of an airport sign light device is provided as the load devices 31 to 3n. In FIG. 3, only the opening detection device 101 corresponding to the load device 31 is illustrated and the other load devices 32 to 3n are not illustrated, but similarly, the load detection devices 101 to 101 are provided corresponding to the other load devices 32 to 3n. (The same applies to the receiving device, the temperature detecting device, and the like described below.). The open detection device 101 is adapted to detect the disconnection of the light source from the presence or absence or change state of the current of the load device 31, for example, the light source. In this embodiment, the voltage or current input to the control power supply 61 is detected. Further, the second switch device 51 is turned on after the load detection device 101 detects the load release.

Further, in this embodiment, the transmitting / receiving device 111 is provided.

Reference numeral 121 denotes a temperature detecting device, which includes the lamp body, the saturable device 21, the first switch device 41, and the second switch device.
The temperature of at least one of the switch devices 52 is detected. This detection result is transmitted, for example, via the transmission / reception device 111. 3, in FIG. 3, the first switch device 41, the second switch device 5, the control power supply device 6
1, the open detection device 101, the transmission / reception device 111, and the temperature detection device 121 are divided into terminals and denoted by reference numeral 131. 132 to 13n are other load devices 3
It is a terminal device having a similar configuration corresponding to 1 to 3n.

Reference numeral 14 denotes an output control device, which outputs at least a control signal of the first switch device 41. In this embodiment, a control signal is sent out via a transmission line 15 provided on the central monitoring side and connecting each of the terminals 131 to 13n in a cascade connection. The transmission line 15 is preferably an optical fiber for high-speed transmission, but may be an electric wire. Alternatively, the transmission line 15 may be omitted for wireless transmission.

Next, the operation of this embodiment will be described. Figure 1
The description of the operation of the same or easily understandable parts will be omitted. Now, for example, when the load device 31 is stopped, a control signal is sent from the output control device 14 to the transmission line 15. The transmitter / receiver 111 receives this signal and turns off the first switch device 41. Also in this case, the second switch device 51 is turned on at the same time or prior to the first switch device 41. Therefore, the load is not released when viewed from the saturable device 2, and the release detection device 101 does not erroneously detect that the load is released.

When the load device 31 is opened, the open detection device 101 detects a state such as a change in current and a change in voltage associated with the open, and the output control device 1 is transmitted via the transmission / reception device 111.
Send to 4. The output control device 14 receives and displays this detection signal. Alternatively, the detection signal is judged and displayed.

After this, the second switch device 51 is turned on. Therefore, the load is not released from the viewpoint of the saturable device 21, and the power loss in the saturable device 21 increases,
It is possible to prevent an abnormal temperature rise.

Next, an embodiment of the airport sign light device will be described with reference to FIG. Also in FIG. 4, the same or corresponding portions as those in FIG. 1 are denoted by the same reference numerals.
FIG. 4 shows a case of an embedded marker light device, most of which is buried in the ground. Reference numeral 201 denotes a lamp body, and an embedded wiring box 203 via a support base 202.
It is located above. Further, the lamp body 201 is formed of an upper surface portion 205 having a translucent member 204 attached to a light projecting window and a lower surface portion 207 having a wire insertion portion 206 on the bottom surface. Then, a light source 31, which is a load device, is arranged in the lamp body 201. Reference numeral 208 is a reflecting mirror.

In the embedded wiring box 203, the piping 209 for the power feeding line L1 and the transmission line L2 is packed 21.
It is provided through 0. The terminal device 71 of FIG. 1 or the terminal device 131 of FIG. 3 is arranged in the embedded wiring box 203.

If necessary, the electric wire insertion portion 206 of the lower surface 207 of the lamp body may include a terminal block 211 and a packing 212.
Is provided. 213 is a partition member.

[0059]

As described above, according to the first aspect of the present invention, the load devices can be individually controlled, and the load current is cut off almost completely by the first switch device when the load is stopped. it can. Further, when the power supply to the load device is stopped, the second switch device is turned on at the same time or earlier, so that overvoltage is not generated across the saturable device, and power loss in the saturable device is reduced. It is possible to prevent the increase and prevent the deterioration of life due to abnormal heat generation.

The invention described in claim 2 is a simple one in which the load device can be controlled between the terminal device corresponding to each load device and the central control device, and the control operation is excellent.

The invention described in claim 3 is the first and second aspects.
Since the power supply for operating the switch device is obtained from the output of the saturable device, it is not necessary to transmit the operating power particularly. Therefore, no special transmission line is required, an optical fiber or the like can be used, and high-speed transmission is possible.

According to the fourth aspect of the present invention, since the load release detecting device detects the load release, maintenance and replacement of the load device is easy.

According to the fifth aspect of the present invention, when the load is released, the second switch device is turned on. Therefore, overvoltage is not generated across the saturable device, and power loss and heat generation in the saturable device can be prevented. At the same time, it is not mistaken for load release.

According to the sixth aspect of the invention, in addition to the fact that the load device can be controlled between the terminal device corresponding to each load device and the central control device, the load release information can also be obtained by the central control device. A simple DC load control device can be provided.

The seventh aspect of the present invention can provide an airport marker light control device that exhibits the same effects as those of the first or sixth aspect of the present invention or a combination thereof.

According to the eighth aspect of the present invention, the light source can be arbitrarily turned on and off and the light output can be controlled, and when the light is turned off, the lamp current can be almost completely shut off by the first switch device. Further, when the light source is turned off, the second switch device is turned on at the same time or earlier, so that an overvoltage is not generated across the saturable device and an increase in power loss in the saturable device can be prevented. At the same time, it is possible to prevent life deterioration due to abnormal heat generation.

According to the invention described in claim 9, in addition to the invention described in claim 8, the load device can be controlled between the terminal device corresponding to the marker lamp device and the central control device, and the control operation is simple. It is something.

In the tenth aspect of the present invention, it is possible to detect the temperature of each component, and thereby to control the power supply to the light source to avoid the above temperature condition.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing the operation of the first embodiment.

FIG. 3 is a circuit diagram showing a second embodiment of the present invention.

FIG. 4 is a sectional view showing an example of an airport marker light device 1 ... Constant current power supply device 21 to 2n ... Saturable device 31 to 31
3n ... Load device, 41 ... First switch device, 51 ... Second switch device, 8 ... Output control device, 14 ... Central control device, 9, 15 ... Transmission line, 71, 131 ... Terminal device, 10
1 ... Openness detection device, 111 ... Transmission / reception device.

Claims (10)

[Claims] 1. A constant current power supply device; a plurality of saturable devices provided in series between output terminals of the constant current power supply device; Outputs of the constant current power supply device through each of these saturable devices A plurality of load devices that are energized by; a first switch device that is provided in series with each of these load devices and is capable of controlling power supply to the corresponding load device; A second switch device that is provided in parallel with the load device and the series circuit of the first switch device and is turned on before the first switch device is turned off;
And an output control device that outputs a control signal to the second switching device; and a series load control device. 2. A constant current power supply device; a plurality of saturable devices provided in series between output terminals of the constant current power supply device; Outputs of the constant current power supply device via each of these saturable devices A plurality of load devices that are energized by the load device; a first switch device that is provided corresponding to each of the load devices and that is provided in series with the load device and that can control power supply to the corresponding load device. A second circuit which is provided in parallel with the series circuit of the load device and the first switch device when viewed from the saturable device and which is turned on before the first switch device is turned off.
Terminal device having a switch device and a receiving device for receiving a control signal for at least the first switch device; and a cascade connection of each of these terminal devices, and at least the first switch device for each terminal device. And a central control device for sending a control signal for controlling the serial load control device. 3. A first switch device, a second switch device, etc., which is connected to an electrically closed circuit including the saturable device and the second switch device and is fed from the output side of the saturable device. The series load control device according to claim 1 or 2, further comprising a control power supply device for supplying operating power to the serial load control device. 4. The serial load control device according to claim 1, further comprising an opening detection device that detects opening of the load device. 5. The series load control device according to claim 4, wherein the second switch device is turned on when the release detection device detects the release of the load. 6. The terminal device is provided with the opening detection device, and transmits and receives a control signal and an opening detection signal of the first switch device to and from the central control device. 6. The serial load control device according to any one of 1 to 5. 7. A serial load control device according to any one of claims 1 to 6; and an airport marker light device having a built-in light source as a load device of the serial load control device. Airport beacon signal control device. 8. An airport sign light device, which is provided in series between output terminals of a constant current power supply device and is energized by an output of the constant current power supply device, comprising a saturable device and a lamp body. A light source provided in the lamp body and supplied with power via the saturable device; a first switch device provided in series with the light source and capable of controlling power supply to the light source; A second switch device provided in parallel with the series circuit of the light source and the first switch device and turned on before turning off the first switch device; the saturable device and the second switch A control power supply device, which is connected to an electrically closed circuit including a device, is supplied from the output side of the saturable device, and serves as a power source for the first switch device and the second switch device. Airport beacon light device. 9. An airport, which is provided between output terminals of a constant current power supply device in series with each other, is energized by the output of the constant current power supply device, and whose output is controlled by a control signal from a central control device. A marker lamp device comprising: a saturable device; a lamp body; a light source provided in the lamp body and supplied with power via the saturable device; and a power supply to the light source provided in series with the light source. A controllable first switch device, a second switch provided in parallel with a series circuit of the light source and the first switch device when viewed from the saturable device, and turned on before the first switch device is turned off. Device, the saturable device, and an electrically closed circuit including the second switch device, and is supplied with power from the output side of the saturable device to serve as a power source for the first switch device and the second switch device. Control power supply And a terminal device having a receiving device for receiving a control signal from the central control device; 10. The airport marker light has a temperature detecting device for detecting the temperature of at least one of the saturable device, the first switch device, and the second switch device in the lamp body. The airport sign light device according to claim 9.