Disaster prevention terminal device and disaster prevention system

Abstract

To improve reliability of state monitoring for internal wiring by simply examining the state of the internal wiring of a disaster prevention terminal device on site.SOLUTION: In a disaster prevention system, disaster prevention terminal devices 12(12-1)-12(12-3) are sequentially connected to a signal line 1110 and a common line 1120 drawn from a host device 10. The disaster prevention terminal devices 12(12-1)-12(12-3) include a press switch 14 having a first switch terminal 1410 and a second switch terminal 1420, and a terminal board 16 having a first terminal 1610 where first internal wiring 1810 derived from the first switch terminal 1410 and the signal line 1110 are connected, and a second terminal 1620 where second internal wiring 1820 derived from the second switch terminal 1420 and the common line 1120 are connected. An internal wiring examination part 20 is provided between the first switch terminal 1410 and the second switch terminal 1420 for examining the state of the first internal wiring 1810 and the second internal wiring 1820.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a disaster prevention terminal device provided with an operation switch, and a disaster prevention system provided with a plurality of disaster prevention terminal devices.

Background Art

[0002] Conventionally, fire hydrant devices have been installed as emergency facilities in tunnels such as highways and motorways. The fire hydrant device includes, for example, a valve group including a fire hose and a fire hydrant valve in a fire hydrant storage section in a housing provided with a fire hydrant door, and two fire extinguishers are stored in a fire extinguisher storage section in a housing provided with a fire extinguisher door. Also, generally, fire hydrant devices are installed at predetermined intervals, for example, at 50-meter intervals, in the longitudinal direction of the tunnel.

[0003] In addition, an emergency reporting device provided integrally with the fire hydrant device includes a red indicator light, a transmitter, a response lamp indicating that the transmitter has been pressed, and a telephone jack for making a call between the fire hydrant device and a disaster prevention receiving panel installed in an electrical room during maintenance, etc. Further, in the fire hydrant storage section of the fire hydrant device, there are provided a pump starting device used when the fire brigade starts the fire pump facility and a pump starting interlocking device interlocked with the operation of the fire hydrant valve.

[0004] In addition, conventional emergency facilities connect a transmitter or the like to a signal wiring drawn from a disaster prevention receiving panel. When the transmitter is operated, a fire alarm signal is transmitted as a transmission signal from the transmitter to the disaster prevention receiving panel to output a fire alarm to the disaster prevention receiving panel and, for example, display a tunnel entry prohibition on an alarm display board at the tunnel entrance. Also, in conventional emergency facilities, the disaster prevention receiving panel has a function of monitoring disconnection of signal wiring to a transmitter or the like (Patent Document 1).

[0005] However, in conventional emergency equipment, multiple connection wirings are led out by branching from the middle of the signal wiring from the disaster prevention receiving panel to connect a transmitter or the like, and there is a problem that the connection wirings are not monitored for disconnection. For example, the wiring to the transmitter of the emergency reporting device provided integrally with the fire hydrant device is performed via a terminal block provided inside the housing of the fire hydrant device. Although the signal wiring from the disaster prevention receiving panel to the terminal block can be monitored for disconnection, the internal wiring (connection wiring) from the terminal block to the transmitter cannot be monitored for disconnection.

[0006] To solve this problem, a pressing switch (operation switch) and a terminal block having a plurality of terminals are provided. Two internal wirings are led out from one switch terminal of the pressing switch and connected to two terminals of the terminal block, and the other two internal wirings are led out from the other switch terminal and connected to the other two terminals of the terminal block. The resulting transmission equipment (disaster prevention terminal device) is applied to the transmitter, and the signal wiring from the disaster prevention receiving panel is connected to the terminal block so that the signal wiring and the internal wiring are connected in series. This enables monitoring not only of the signal wiring from the disaster prevention receiving panel but also of the internal wiring from the terminal block to the pressing switch (Patent Document 2).

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] However, in Patent Document 2, since two internal wirings, a total of four internal wirings, are led out from each of the switch terminals of the pressing switch, the amount of internal wiring is doubled, and there is a problem that the possibility of abnormalities such as disconnection occurring in the internal wiring increases due to the increased amount of wiring.

[0009] In addition, when the amount of wiring increases and a disconnection occurs in either the signal wiring or the internal wiring, current will not flow through the signal wiring regardless of the location where the disconnection occurs, so there is also a problem that it is difficult to identify the location of the disconnection. For this reason, in order to identify the disconnection location, workers etc. go to the site where the fire hydrant device is installed, and it is necessary to check each wiring (signal wiring and internal wiring) one by one until the disconnection location can be identified. However, this work takes time, and it also takes time to restore the disconnection, which is also a problem. The larger the scale of the disaster prevention system, the more difficult and time-consuming the restoration work will be.

[0010] In addition, if it takes time to restore the disconnection, depending on the location where the disconnection occurs, there is also a possibility that when a fire breaks out near the disaster prevention terminal device whose function has stopped due to the disconnection, it may fall into a state where reporting by operating the transmitter cannot be performed smoothly.

[0011] An object of the present invention is to provide a disaster prevention terminal device and a disaster prevention system that can easily test the state of the internal wiring of a disaster prevention terminal device at the site where the disaster prevention terminal device is installed without increasing the internal wiring of the disaster prevention terminal device, making it easy to identify the disconnection location and improving the reliability of the state monitoring of the internal wiring.

Means for Solving the Problems

[0012] (Disaster prevention terminal device) The present invention has a first switch terminal and a second switch terminal, an operation switch that short - circuits between the first switch terminal and the second switch terminal by a predetermined operation, a first wiring connection part to which one of a pair of signal wirings from the outside is connected and a first internal wiring led out from the first switch terminal of the operation switch, a second wiring connection part to which the other of a pair of signal wirings from the outside is connected and a second internal wiring led out from the second switch terminal of the operation switch, and is a disaster prevention terminal device provided with an internal wiring test part for testing the states of the first internal wiring and the second internal wiring is provided between the first switch terminal and the second switch terminal of the operation switch, which is characterized in that.

[0013] (Internal Wiring Test Section) The internal wiring test section serially connects a wiring test operation section, a wiring monitoring resistor, and a current display section between the first switch terminal and the second switch terminal of the operation switch, and by operating the wiring test operation section to display the state of the wiring test current flowing through the wiring path including the first internal wiring, the second internal wiring, and the internal wiring test section corresponding to the wiring monitoring resistor on the current display section, the states of the first internal wiring and the second internal wiring are notified.

[0014] (Current Display Section) The current display section includes a light emitting section that lights up by the wiring test current flowing corresponding to the wiring monitoring resistor when the wiring test operation section is operated, thereby notifying that the states of the first internal wiring and the second internal wiring are normal.

[0015] (Display Test Section) The internal wiring test section further includes a display test section that, by operating the display test operation section, sends a current to the current display section without passing through the first internal wiring and the second internal wiring, and checks the display by the current display section.

[0016] (Internal Wiring Test Section Provided in the Test Device) The internal wiring test section is provided in a predetermined test device that can be connected to the disaster prevention terminal device, and by connecting the test device to the disaster prevention terminal device, the internal wiring test section is provided between the first switch terminal and the second switch terminal of the operation switch.

[0017] (Monitoring the States of the Internal Wires of a Plurality of Operation Switches Connected in Parallel) Furthermore, it includes other operation switches connected in parallel to the operation switch, and the first switch terminal of the operation switch and the first switch terminal of the other operation switch, and the second switch terminal of the operation switch and the second switch terminal of the other operation switch are connected by parallel internal wiring, The internal wiring test unit is provided between the first switch terminal and the second switch terminal of another operation switch, and tests the state of the parallel internal wiring in addition to the first internal wiring and the second internal wiring, which is provided between the first switch terminal and the second switch terminal of the operation switch.

[0018] (Disaster prevention system) The present invention is a disaster prevention system provided with a plurality of the above-described disaster prevention terminal devices, One of a pair of signal wirings drawn from the upper device is sequentially connected to the first wiring connection portion of each disaster prevention terminal device, and the other of the pair of signal wirings is sequentially connected to the second wiring connection portion of each disaster prevention terminal device. The terminals of one of the pair of signal wirings and the other of the pair of signal wirings are connected via a termination resistor, and the upper device monitors the state of the pair of signal wirings.

[0019] (Disconnection switch for termination resistor) In the disaster prevention system, the first wiring connection portion includes a first wiring connection point to which a signal wiring drawn from the upstream side and a first internal wiring are connected, and a second wiring connection point to which a signal wiring drawn to the downstream side is connected, and the internal wiring test unit is provided between the first wiring connection point and the second wiring connection point, and includes a disconnection switch that disconnects the connection between the first wiring connection point and the second wiring connection point in conjunction with a predetermined test operation by the internal wiring test unit.

[0020] (Disaster prevention receiving panel and fire hydrant device) In the disaster prevention system, the upper device is a disaster prevention receiving panel, and the disaster prevention terminal device is a predetermined device provided in a fire hydrant device connected to a signal wiring from the disaster prevention receiving panel.

[0021] (Test of internal wiring for the pressing switch of the transmitter) In the disaster prevention system, the predetermined device serving as the disaster prevention terminal device is a transmitter provided with a pressing switch that transmits a fire alarm signal to the disaster prevention receiving panel when pressed as an operation switch, The internal wiring test section tests the state of the internal wiring for the pressure switch of the transmitter.

[0022] (Test of the internal wiring for the pressure switches of the pump starting device and the pump starting interlocking device) In a disaster prevention system, a predetermined device serving as a disaster prevention terminal device includes a pump starting device having a pressure switch that transmits a pump starting signal to a disaster prevention receiving panel when pressed as an operation switch, and a pump starting interlocking device having a pressure switch connected in parallel to the pressure switch of the pump starting device, detecting an opening operation of a fire hydrant valve, and transmitting a pump starting signal to a disaster prevention receiving panel, and the internal wiring test section tests the state of the internal wiring for the pressure switches of the pump starting device and the pump starting interlocking device.

Advantages of the Invention

[0023] (Advantages of the disaster prevention terminal device) The present invention has a first switch terminal and a second switch terminal, an operation switch that short - circuits between the first switch terminal and the second switch terminal by a predetermined operation, a first internal wiring led out from the first switch terminal of the operation switch, a first wiring connection portion to which one of a pair of signal wirings from the outside is connected, a second internal wiring led out from the second switch terminal of the operation switch, and a second wiring connection portion to which the other of the pair of signal wirings from the outside is connected. The disaster prevention terminal device is provided with an internal wiring test section for testing the states of the first internal wiring and the second internal wiring between the first switch terminal and the second switch terminal of the operation switch. Therefore, during regular inspections etc. of the disaster prevention terminal device, by performing a test by the internal wiring test section provided for the disaster prevention terminal device, the state of the internal wiring of the disaster prevention terminal device can be tested. From the test results, abnormalities such as disconnection or poor insulation in the internal wiring can be surely grasped. Since the test is carried out at the site where the disaster prevention terminal device is installed, it is possible to quickly and appropriately respond to abnormalities, and it is possible to improve the reliability of the state monitoring of the internal wiring.

[0024] Moreover, even when there are multiple disaster prevention terminal devices, since it is possible to conduct internal wiring tests on each disaster prevention terminal device, it is easy to identify the disconnection points. Also, regarding the internal wiring, there is no need for the upper device from which the signal wiring is drawn to monitor the status. Instead, the status is confirmed through tests by the internal wiring test unit. Therefore, it is not necessary to derive two internal wirings from one switch terminal, enabling the simplification of the internal wiring configuration.

[0025] (Effect of the internal wiring test unit) In addition, the internal wiring test unit serially connects a wiring test operation unit, a wiring monitoring resistor, and a current display unit between the first switch terminal and the second switch terminal of the operation switch. By operating the wiring test operation unit, the current display unit displays the status of the wiring test current flowing through the wiring path including the first internal wiring, the second internal wiring, and the internal wiring test unit corresponding to the wiring monitoring resistor, thereby notifying the status of the first internal wiring and the second internal wiring. Therefore, the internal wiring test unit can be realized with a simple configuration of serially connecting a wiring test operation unit, a wiring monitoring resistor, and a current display unit between the first switch terminal and the second switch terminal of the operation switch. Also, since the status of the internal wiring can be determined by the display of the current display unit, it is possible to easily and surely grasp the status of the internal wiring.

[0026] (Effect of the current display unit) Furthermore, the current display unit is provided with a light-emitting unit that lights up according to the current flowing corresponding to the wiring monitoring resistor when the wiring test operation unit is operated, thereby notifying that the status of the first internal wiring and the second internal wiring is normal. Therefore, if the light-emitting unit lights up when the wiring test operation unit is operated, it can be known that the internal wiring is normal, and if the light-emitting unit does not light up, it can be known that the internal wiring is disconnected. Thus, it is possible to easily and surely grasp the status of the internal wiring.

[0027] (Effect of the display test unit) In addition, since the internal wiring test unit further includes a display test unit that, by operating the display test operation unit, sends current to the current display unit without passing through the first internal wiring and the second internal wiring and checks the display by the current display unit, regardless of the state of the internal wiring, it is possible to check whether the current display unit displays normally by operating the lighting test operation unit before testing the internal wiring, and it is possible to prevent misjudging a failure of the current display unit as an abnormality of the internal wiring.

[0028] (Effect of the internal wiring test unit provided in the test device) In addition, the internal wiring test unit is provided in a predetermined test device that can be connected to the disaster prevention terminal device. By connecting the test device to the disaster prevention terminal device, the internal wiring test unit is provided between the first switch terminal and the second switch terminal of the operation switch. Therefore, there is no need to provide an internal wiring test unit in the disaster prevention test device, simplifying the configuration of the disaster prevention terminal device for testing the internal wiring and reducing costs.

[0029] (Effect of monitoring the state of the internal wiring of a plurality of operation switches connected in parallel) Furthermore, it further includes another operation switch connected in parallel to the operation switch. The first switch terminal of the operation switch and the first switch terminal of the other operation switch, and the second switch terminal of the operation switch and the second switch terminal of the other operation switch are connected by parallel internal wiring. The internal wiring test unit is provided between the first switch terminal and the second switch terminal of the other operation switch, so that it is provided between the first switch terminal and the second switch terminal of the operation switch. In addition to the first internal wiring and the second internal wiring, the state of the parallel internal wiring is also tested. Therefore, even when the operation switches are connected in parallel by parallel internal wiring, it is possible to test the state of the internal wiring including the parallel internal wiring by the test of the internal wiring test unit.

[0030] (Effect of the disaster prevention system) The present invention also relates to a disaster prevention system provided with a plurality of the above-described disaster prevention terminal devices. One of a pair of signal wirings drawn from an upper device is sequentially connected to a first wiring connection portion of each disaster prevention terminal device, and the other of the pair of signal wirings is sequentially connected to a second wiring connection portion of each disaster prevention terminal device. The terminals of one of the pair of signal wirings and the other of the pair of signal wirings are connected via a termination resistor. Since the upper device monitors the state of the pair of signal wirings, the upper device monitors the state of the signal wirings, and the internal wiring test unit tests the internal wiring of the disaster prevention terminal device, making it possible to monitor the state of all the wirings.

[0031] (Effect of the disconnection switch of the termination resistor) Further, the first wiring connection portion includes a first wiring connection point to which a signal wiring and a first internal wiring drawn from the upstream side are connected, and a second wiring connection point to which a signal wiring drawn to the downstream side is connected. Since the internal wiring test unit is provided between the first wiring connection point and the second wiring connection point and includes a disconnection switch that disconnects the connection between the first wiring connection point and the second wiring connection point in conjunction with a predetermined test operation by the internal wiring test unit, when the disconnection switch is not provided, the wiring current flowing through the signal wiring during the test by the internal wiring test unit is the sum of the state monitoring current corresponding to the termination resistor and the wiring test current. On the other hand, when the disconnection switch is provided, the termination resistor is disconnected from the upper device by the disconnection switch, and only the wiring test current flows through the signal wiring without the state monitoring current corresponding to the termination resistor flowing through it, preventing the wiring current flowing through the signal wiring from increasing during the test by the internal wiring test unit.

[0032] And since it is possible to prevent the wiring current flowing through the signal wiring from increasing during the test by the internal wiring test unit, it is possible to suppress and prevent the disaster prevention receiving board from misjudging the change in the wiring current during the test by the internal wiring test unit as the operation of the operation switch of the disaster prevention terminal device (the increase in the wiring current flowing through the signal wiring accompanying the operation of the operation switch).

[0033] (Effect of the disaster prevention receiving board and the fire hydrant device) Further, the upper-level device is a disaster prevention receiving panel, and the disaster prevention terminal device is a predetermined device such as a transmitter, a pump starting device, and a pump starting interlocking device provided in a fire hydrant device connected to the signal wiring from the disaster prevention receiving panel. Since the internal wiring test unit is configured to test the state of the internal wiring for the push switches of the transmitter, the pump starting device, and the pump starting interlocking device, it is possible to easily and surely know the state of the internal wiring for the push switches provided in each of the transmitter, the pump starting device, and the pump starting interlocking device of the fire hydrant device connected to the signal wiring from the disaster prevention receiving panel through a test at the installation site of the fire hydrant device.

Brief Description of the Drawings

[0034]

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Modes for Carrying Out the Invention

[0035] Hereinafter, embodiments of the disaster prevention terminal device and the disaster prevention system according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited by the following embodiments.

[0036] [Basic Concepts of the Embodiment] First, the basic concepts of the embodiment will be described. The embodiment relates to a disaster prevention terminal device schematically including an operation switch, internal wiring, and a wiring connection part, and a disaster prevention system provided with a plurality of such disaster prevention terminal devices.

[0037] Here, the "operation switch" has a first switch terminal and a second switch terminal, and shorts between the first switch terminal and the second switch terminal by a predetermined operation.

[0038] Also, the type, configuration, and structure of the "operation switch" are arbitrary, and for example, it includes a normally open switch or the like. As the "normally open switch", for example, it includes a "push switch" having a normally open contact (so-called a contact) and closing and conducting between the contacts by pressing a pressing part serving as an operation part.

[0039] Also, the "switch terminal" is a concept that can substantially include the contact of the operation switch itself. For example, the switch terminal may be directly provided on a conductor plate having the contact of the operation switch. Of course, inside the switch, the connection between each contact and the corresponding switch terminal may be connected by short wiring or other conductor components. Note that the operation switch only needs to be one that does not conduct between the switch terminals (between one switch terminal and the other) during normal times and conducts between the switch terminals when a predetermined operation is performed, and is not limited to a push switch. For example, various switches such as slide switches can be applied. Also, various switch types such as lock type and non-lock type can be applied.

[0040] Also, the type, configuration, and structure of the "wiring connection part" are arbitrary. For example, it includes a terminal block having a plurality of terminals (wiring connection points). The terminal block (terminal box equipped with the terminal block) may be provided inside or outside the disaster prevention terminal device.

[0041] Also, the "signal wiring" is a wiring drawn from outside the disaster prevention terminal device, for example, from a higher-level device and connected to the disaster prevention terminal device. The "internal wiring" is a wiring led out from the switch terminal of the operation switch and routed to the disaster prevention terminal device.

[0042] Although the internal wiring and wiring connection parts are labeled with "No. 0", this is only for distinction and does not limit the internal wiring and wiring connection parts by being labeled with "No. 0". For example, in a disaster prevention terminal device, the first internal wiring is led out from the first switch terminal of the operation switch, and the second internal wiring is led out from the second switch terminal. This includes all inventions in which one internal wiring is led out from any switch terminal of the operation switch and a different one internal wiring is led out from a switch terminal different from that one, and the invention is not limited by the term "No. 0". Also, the same applies to "one side" and "the other side" in the signal wiring. For example, in the "specific content of the embodiment" described later, the signal wiring is described as including a "signal line" and a "common line", but "signal line" may be applied to "one side" of the signal wiring and "common line" to "the other side" of the signal wiring, or "common line" may be applied to "one side" of the signal wiring and "signal line" to "the other side" of the signal wiring.

[0043] The disaster prevention terminal device of the embodiment is characterized in that an internal wiring test unit for testing the states of the first internal wiring and the second internal wiring is provided between the first switch terminal and the second switch terminal of the operation switch.

[0044] Here, the type, configuration, and structure of the "internal wiring test unit" are arbitrary. For example, between the first switch terminal and the second switch terminal of the operation switch, a wiring test operation unit, a wiring monitoring resistor, and a current display unit are connected in series, and by operating the wiring test operation unit to display the state of the wiring test current flowing through the wiring path including the first internal wiring, the second internal wiring, and the internal wiring test unit corresponding to the wiring monitoring resistor on the current display unit, the states of the first internal wiring and the second internal wiring are notified.

[0045] Also, the "wiring test operation unit" is operated to cause a wiring test current to flow through the wiring path including the first internal wiring, the second internal wiring, and the internal wiring test unit when testing the states of the first internal wiring and the second internal wiring, and includes, for example, a wiring test switch that is pressed (turned on, tested) when testing.

[0046] In addition, the configuration of the "current display unit" and the display mode of the wiring test current state are arbitrary. For example, when the wiring test operation unit is operated, it is equipped with a light-emitting unit that operates (lights up) due to the wiring test current flowing corresponding to the wiring monitoring resistor to notify normalcy. Conversely, when the light-emitting unit does not operate, that is, when the wiring test current does not flow, a disconnection has occurred in at least one of the first internal wiring or the second internal wiring, and the non-operation of the light-emitting unit means notification of a disconnection. Also, as a configuration for displaying the state of the wiring test current, the current display unit may be equipped with an ammeter, a bar graph display, etc. in addition to the light-emitting unit.

[0047] Thus, according to the disaster prevention terminal device provided with the internal wiring test unit, during regular inspections of the disaster prevention terminal device, etc., at the site where the disaster prevention terminal device is installed, the internal wiring test unit tests the state of the internal wiring to easily and surely grasp the state of the internal wiring (normal, disconnection, etc.). If the test result is an abnormality such as a disconnection, it is possible to quickly and appropriately take measures, and it is possible to improve the reliability of the state monitoring of the internal wiring.

[0048] In addition, the "internal wiring test unit" may be equipped with a display test unit that, in addition to the wiring test operation unit, the wiring monitoring resistor, and the current display unit, allows a current to flow through the current display unit without passing through the first internal wiring and the second internal wiring by operating the display test operation unit to confirm the display by the current display unit. Also, the "display test operation unit" is operated when confirming the display by the current display unit, and includes, for example, a display test switch that is pressed (turned on, tested) when testing.

[0049] By the internal wiring test unit being equipped with the display test unit, by operating the display test operation unit before performing the internal wiring test to confirm that the current display unit displays normally, it is possible to prevent beforehand misjudging a state where the current display unit does not display normally due to a failure, etc. as an abnormality of the internal wiring.

[0050] In addition, the disaster prevention terminal device of the embodiment is provided with an internal wiring test unit for testing the states of the first internal wiring and the second internal wiring. However, the location where the internal wiring test unit is provided is not limited to the inside of the disaster prevention terminal device and may be outside the disaster prevention terminal device.

[0051] When the internal wiring test unit is provided outside the disaster prevention terminal device, for example, the internal wiring test unit is provided in a predetermined test device that can be connected to the disaster prevention terminal device. By connecting the test device to the disaster prevention terminal device, the internal wiring test unit may be provided between the first switch terminal and the second switch terminal of the operation switch.

[0052] By providing the internal wiring test unit in a test device that can be connected to the disaster prevention terminal device, it is not necessary to provide the internal wiring test unit in the disaster prevention terminal device, simplifying the configuration of the disaster prevention terminal device for testing the internal wiring and enabling cost reduction.

[0053] In addition, the disaster prevention terminal device of the embodiment may include another operation switch connected in parallel to the operation switch. When the operation switch and another operation switch are connected in parallel, the internal wiring test unit is provided between the first switch terminal and the second switch terminal of the other operation switch, and thus is provided between the first switch terminal and the second switch terminal of the operation switch. In addition to the first internal wiring and the second internal wiring, it tests the state of the parallel internal wiring that connects the operation switch and another operation switch in parallel.

[0054] In addition, in a disaster prevention system provided with a plurality of the above-described disaster prevention terminal devices, a pair of signal wirings are drawn from a host device. The host device monitors the state of a pair of signal wirings connected to a termination resistor via a plurality of disaster prevention terminal devices. The disaster prevention system is applicable to emergency facilities such as a fire hydrant device that functions as a disaster prevention terminal device and is connected to a signal wiring drawn from a disaster prevention receiving panel that functions as a host device, for example.

[0055] In addition, as predetermined devices of a fire hydrant device that functions as a disaster prevention terminal device, it includes a transmitter equipped with a push switch as an operation switch, a pump starting device, a pump start interlocking device, etc. The internal wiring test unit tests the state of the internal wiring for the push switches provided in these devices.

[0056] Further, in the disaster prevention terminal device, it includes a first wiring connection point to which a signal wiring drawn from the upstream side and a first internal wiring are connected, and a second wiring connection point to which a signal wiring drawn to the downstream side is connected. The internal wiring test unit is provided between the first wiring connection point and the second wiring connection point, and may be provided with a disconnect switch that disconnects the connection between the first wiring connection point and the second wiring connection point in conjunction with a predetermined test operation.

[0057] Here, the "signal wiring drawn from the upstream side" is a signal wiring drawn from a higher-level device or a disaster prevention terminal device located on the higher-level device side than itself to itself, and the "signal wiring drawn to the downstream side" is a signal wiring drawn toward a predetermined disaster prevention terminal device located on the termination resistance side than itself.

[0058] And the "disconnect switch" is provided between the first wiring connection point to which the signal wiring drawn from the upstream side is connected and the second wiring connection point to which the signal wiring drawn to the downstream side is connected, and disconnects the connection between the first wiring connection point and the second wiring connection point in conjunction with a predetermined test operation by the internal wiring test unit. Therefore, when a predetermined test operation by the internal wiring test unit is performed, the disaster prevention terminal device located on the downstream side of the disaster prevention terminal device in which it is provided and the termination resistance can be in a state of not being connected to the higher-level device (disconnected state).

[0059] Here, as the state monitoring of the signal wiring, the host device determines the operation of the operation switch of the disaster prevention terminal device (receiving the transmission signal from the disaster prevention terminal device) by detecting a predetermined increase in the wiring current flowing through the signal wiring (or the increased wiring current). However, if there is no disconnect switch, during the test of the internal wiring by the internal wiring test unit, in addition to the state monitoring current corresponding to the terminal resistance, a wiring test current will flow through the signal wiring, resulting in an increase in the wiring current flowing through the signal wiring. Therefore, it becomes necessary to set the determination conditions so that the host device can distinguish between the increase in the wiring current due to the wiring test current and the increase in the wiring current due to the operation of the operation switch of the disaster prevention terminal device.

[0060] On the contrary, by providing a disconnect switch, the terminal resistance can be disconnected from the host device during the test of the internal wiring by the internal wiring test unit. Due to the operation of the disconnect switch, only the wiring test current can flow through the signal wiring without the state monitoring current corresponding to the terminal resistance flowing through it. It becomes possible to avoid an increase in the wiring current flowing through the signal wiring during the test of the internal wiring by the internal wiring test unit, reduce the influence on the state monitoring of the signal wiring by the host device, and enable the test of the internal wiring in the disaster prevention terminal device.

[0061] In particular, by adjusting so that the state monitoring current and the wiring test current flowing through the signal wiring corresponding to the terminal resistance are the same, even when the test of the internal wiring is performed by the internal wiring test unit, no change will occur in the wiring current flowing through the signal wiring, making it possible to eliminate the influence of the test of the internal wiring by the internal wiring test unit on the state monitoring of the signal wiring by the host device.

[0062] The following describes specific embodiments. In the specific embodiments shown below, the "operation switch" is a normally open "push switch (a-contact switch)", the "wiring connection part" is a "terminal block" provided in the disaster prevention terminal device, the "wiring test operation part" is a "wiring test switch (push switch)", the "display test part" is a "lighting test part" that tests the lighting of the LEDs provided in the current display part, and the "display test operation part" is a "lighting test switch (push switch)". This will be described as an example. Also, the "embodiment in which the internal wiring test part includes a wiring test switch, a wiring monitoring resistor, and a current display part" will be described as the first embodiment, the "embodiment in which the internal wiring test part includes a wiring test switch, a wiring monitoring resistor, a current display part, and a disconnect switch" will be described as the second embodiment, and the "embodiment in which the internal wiring test part is provided in an external device" will be described as the third embodiment.

[0063] [Specific Contents of Embodiments] Embodiments of a disaster prevention system equipped with a disaster prevention terminal device will be described separately as follows. a. Outline of a disaster prevention system with multiple disaster prevention terminal devices b. First Embodiment of the Disaster Prevention Terminal Device and the Disaster Prevention System b1. Configuration of the Disaster Prevention Terminal Device and the Disaster Prevention System b2. Internal Wiring Test Part b3. Configuration of the Disaster Prevention Terminal Device and the Disaster Prevention System with the Operation Switches Connected in Parallel c. Emergency Equipment c1. Fire Hydrant Device c2. Opening of the Electrical Equipment Door c3. Emergency Equipment Applied with the Disaster Prevention System d. Internal Wiring Test Part with a Lighting Test Function e. Second Embodiment of the Disaster Prevention Terminal Device and the Disaster Prevention System e1. Configuration of the Disaster Prevention Terminal Device and the Disaster Prevention System e2. Configuration of the Disaster Prevention Terminal Device and the Disaster Prevention System with the Operation Switches Connected in Parallel f. Third Embodiment of the Disaster Prevention Terminal Device and the Disaster Prevention System f1. Configuration of the Disaster Prevention Terminal Device and the Disaster Prevention System f2. Configuration of the Disaster Prevention Terminal Device and the Disaster Prevention System with the Operation Switches Connected in Parallel f3. Emergency equipment to which the disaster prevention system of the third embodiment is applied g. Modification example of the present invention

[0064] [a. Outline of a disaster prevention system provided with a plurality of disaster prevention terminal devices] First, the outline of a disaster prevention system provided with a plurality of disaster prevention terminal devices will be described. In this description, refer to FIG. 1 showing the outline of the disaster prevention system.

[0065] As shown in FIG. 1, in the disaster prevention system, for example, three disaster prevention terminal devices 12(12-1), 12(12-2), and 12(12-3) are sequentially connected to a signal wiring 11 (signal cable) drawn from a host device 10. Here, the number of disaster prevention terminal devices provided in the disaster prevention system is arbitrary.

[0066] In addition, the signal wiring 11 includes a signal wiring (signal cable) for high-voltage electricity targeting a commercial AC power supply, a signal wiring (signal cable) for low-voltage electricity targeting a predetermined DC voltage power supply, etc. In the embodiment, a signal wiring for low-voltage electricity is connected to the operation switches provided in the disaster prevention terminal devices 12(12-1) to 12(12-3).

[0067] The disaster prevention terminal devices 12(12-1) to 12(12-3) are provided with at least one operation switch, and when the operation switch is operated, a disaster prevention detection signal (transmission signal) is transmitted to the host device 10 via the signal wiring for low-voltage electricity included in the signal wiring 11.

[0068] The host device 10 monitors the operation of the disaster prevention terminal device (operation of the operation switch) and the state of the signal wiring 11 to which the disaster prevention terminal device is connected based on the wiring current flowing through the signal wiring 11 by receiving the disaster prevention detection signal.

[0069] In addition, since the host device 10 does not monitor the state of the internal wiring for the operation switches provided in the disaster prevention terminal devices 12(12-1) to 12(12-3), the disaster prevention system is provided with an internal wiring test unit that enables the state of the internal wiring of the disaster prevention terminal devices 12(12-1) to 12(12-3) to be tested on-site.

[0070] Here, in the disaster prevention terminal devices 12(12-1) to 12(12-3), in terms of wiring connection, the disaster prevention terminal device on the upper device 10 side as seen from itself is defined as the "upstream disaster prevention terminal device", and the disaster prevention terminal device on the opposite side of the upper device 10 is defined as the "downstream disaster prevention terminal device". For example, in FIG. 1, as seen from the disaster prevention terminal device 12(12-2), the disaster prevention terminal device 12(12-1) is the "upstream disaster prevention terminal device", and the disaster prevention terminal device 12(12-3) is the "downstream disaster prevention terminal device".

[0071] Also, in terms of wiring connection, the disaster prevention terminal device connected at the position closest to the upper device 10 is defined as the "first-stage reporting device", and the disaster prevention terminal device connected at the farthest position is defined as the "last-stage reporting device". For example, in FIG. 1, the disaster prevention terminal device 12(12-1) is the "first-stage reporting device", and the disaster prevention terminal device 12(12-3) is the "last-stage reporting device". Also, in the embodiment, since three disaster prevention terminal devices are connected, the disaster prevention terminal device 12(12-1) is regarded as the "first-stage disaster prevention terminal device", the disaster prevention terminal device 12(12-2) is regarded as the "second-stage disaster prevention terminal device", and the disaster prevention terminal device 12(12-3) is regarded as the "third-stage disaster prevention terminal device".

[0072] [b. First Embodiment of Disaster Prevention Terminal Device and Disaster Prevention System] Subsequently, a first embodiment of a disaster prevention terminal device and a disaster prevention system, in which the internal wiring test unit includes a wiring test switch, a wiring monitoring resistor, and a current display unit, will be described.

[0073] (b1. Configuration of Disaster Prevention Terminal Device and Disaster Prevention System) First, the configuration of the disaster prevention terminal device and the disaster prevention system in the first embodiment will be described in the case where the disaster prevention terminal device includes one push switch as an operation switch. For this description, refer to FIG. 2 showing the first embodiment of the disaster prevention terminal device and the disaster prevention system.

[0074] As shown in FIG. 2, from the upper device 10, a signal line 1110 and a common line 1120 are drawn out as signal lines for low-voltage electricity included in the signal wiring 11 of FIG. 1.

[0075] After the signal line 1110 is connected to the first terminal 1610 of the terminal block 16 provided in the first-stage (first-stage) disaster prevention terminal device 12 (12-1) from the host device 10, it is sequentially connected to the first terminal 1610 of the terminal block 16 provided in the second-stage disaster prevention terminal device 12 (12-2) and the first terminal 1610 of the terminal block 16 provided in the final-stage (third-stage) disaster prevention terminal device 12 (12-3), and is connected to one end of the termination resistor 28.

[0076] After the common line 1120 is connected to the second terminal 1620 of the terminal block 16 provided in the first-stage (first-stage) disaster prevention terminal device 12 (12-1) from the host device 10, it is sequentially connected to the second terminal 1620 of the terminal block 16 provided in the second-stage disaster prevention terminal device 12 (12-2) and the second terminal 1620 of the terminal block 16 provided in the final-stage (third-stage) disaster prevention terminal device 12 (12-3), and is connected to the other end of the termination resistor 28.

[0077] In order to monitor the state of the signal wiring (signal line 1110 and common line 1120), the host device 10 applies a predetermined wiring voltage, for example, DC48V, between the signal line 1110 and the common line 1120, and the wiring monitoring unit 1010 provided in the host device 10 switches and connects to the signal line 1110 and the common line 1120 at a predetermined cycle to detect the state monitoring current flowing between the signal line 1110 and the common line 1120. When the detected state monitoring current exceeds a predetermined condition, for example, a predetermined threshold value, it is determined to be normal. When the detected state monitoring current is lower than a predetermined condition, for example, a predetermined threshold value when the state monitoring current is interrupted, for example, when the current is cut off, it is determined to be a disconnection, and a disconnection failure alarm is output.

[0078] Also, the disaster prevention terminal devices 12 (12-1) to 12 (12-3) include a push switch 14 and a terminal block 16.

[0079] Taking the disaster prevention terminal device 12(12-1) as an example, the pressing switch 14 has a first switch terminal 1410 and a second switch 1420. Normally, the first switch terminal 1410 and the second switch terminal 1420 are opened as shown in the figure, and when a pressing operation (on operation) is performed, they are closed to transmit a disaster prevention detection signal to the upper device 10. The terminal block 16 has a plurality of connection terminals that serve as wiring connection points, and the first terminal 1610 and the second terminal 1620 are used.

[0080] The first switch terminal 1410 of the pressing switch 14 is connected to the first terminal 1610 of the terminal block 16 by a first internal wiring 1810, and the second switch terminal 1420 of the pressing switch 14 is connected to the second terminal 1620 of the terminal block 16 by a second internal wiring 1820. The description of the disaster prevention terminal device is the same for the disaster prevention terminal devices 12(12-2) and 12(12-3).

[0081] Here, when monitoring the state of the signal wiring by switching and connecting the signal line 1110 and the common line 1120 to the wiring monitoring unit 1010 of the upper device 10, the state monitoring current flowing at this time flows from the plus terminal of the upper device 10 through the signal line 1110, the terminal resistor 28, and the common line 1120 to the minus terminal of the upper device 10, and a wiring current corresponding to the terminal resistor 28 flows.

[0082] Therefore, when monitoring the state of the signal wiring by the upper device 10, no state monitoring current flows through the first internal wiring 1810 and the second internal wiring 1820 of the disaster prevention terminal devices 12(12-1) to 12(12-3). That is, the wiring monitoring unit 1010 of the upper device 10 does not monitor the states of the first internal wiring 1810 and the second internal wiring 1820 of the disaster prevention terminal devices 12(12-1) to 12(12-3).

[0083] Therefore, in the first embodiment, an internal wiring test unit 20 is provided in each of the disaster prevention terminal devices 12(12-1) to 12(12-3) so that the states of the first internal wiring 1810 and the second internal wiring 1820 can be monitored.

[0084] (b2. Internal wiring test unit) Next, the internal wiring test unit provided in the disaster prevention terminal device will be described. Taking the disaster prevention terminal device 12(12-1) as an example, the internal wiring test unit 20 is provided between the first switch terminal 1410 and the second switch terminal 1420 of the push switch 14, and includes a wiring test switch 22, a wiring test resistor 24, and a current display unit 26.

[0085] Specifically, between the first switch terminal 1410 and the second switch terminal 1420 of the push switch 14, the wiring test switch 22, the wiring test resistor 24, and the current display unit 26 of the internal wiring test unit 20 are connected in series.

[0086] The wiring test switch 22 is an open push switch as shown in the figure during normal times, and closes when a pressing operation (on operation, test operation) such as a test of the internal wiring is performed.

[0087] The wiring test resistor 24 is a resistor for setting the wiring test current flowing through the internal wiring during the test of the internal wiring. Its resistance value is arbitrary. For example, a resistor with the same resistance value as the termination resistor 28 provided at the ends of the signal line 1110 and the common line 1120 is used.

[0088] The current display unit 26 operates according to the wiring test current flowing through the internal wiring corresponding to the wiring test resistor 24 during the test of pressing the wiring test switch 22, and displays the state of the wiring test current. As an example, it includes a light emitting unit using a light emitting element driven to emit light by the wiring test current, and an LED is used as the light emitting element.

[0089] When testing the state of the internal wiring of the disaster prevention terminal device 12(12-1) during regular inspections or the like, an operator or the like goes to the installation site of the disaster prevention terminal device 12(12-1) and presses the wiring test switch 22 of the internal wiring test unit 20. When the wiring test switch 22 of the disaster prevention terminal device 12(12-1) is pressed, a wiring test current flows through the path from the plus terminal of the upper device 10, through the signal line 1110, the first internal wiring 1810, the wiring test switch 22, the wiring test resistor 24, the current display unit 26, the second internal wiring 1820, and the common line 1120 to the minus terminal of the upper device 10.

[0090] If the first internal wiring 1810 and the second internal wiring 1820 are normal, a wiring test current flows, so the LED of the current display unit 26 lights up to notify that the internal wiring is normal. If at least one of the first internal wiring 1810 and the second internal wiring 1820 is disconnected, the wiring test current does not flow, so the LED of the current display unit 26 does not light up, notifying that the internal wiring is disconnected.

[0091] Here, for example, if the wiring voltage applied between the signal line 1110 and the common line 1120 by the host device 10 is DC48V and the resistance value of the wiring test resistor 24 is 9.6 kΩ, a 5 mA wiring test current flows when the wiring test switch 22 is pressed.

[0092] Also, for example, if the resistance value of the termination resistor 28 is the same as that of the wiring test resistor 24, which is 9.6 kΩ, a 5 mA state monitoring current, the same as the wiring test current, flows between the plus terminal and the minus terminal of the host device 10 during normal operation. When the wiring test switch 22 of the internal wiring test unit 20 of the disaster prevention terminal device 12(12 - 1) is pressed, a 10 mA wiring current, which is the sum of the wiring test current and the state monitoring current, flows between the plus terminal and the minus terminal of the host device 10.

[0093] Therefore, in order to transmit a disaster prevention detection signal when the pressure switch 14 provided in the disaster prevention terminal device 12(12-1) is pressed, the disaster prevention detection current (transmission current) flowing is set to a value sufficiently larger than the wiring current obtained by combining the wiring test current and the status monitoring current. For example, if the wiring current obtained by combining the wiring test current and the status monitoring current is 10 mA, it is set to about 20 mA. This enables discrimination between the wiring current flowing between the plus and minus terminals of the host device 10 when the wiring test switch 22 is pressed and the disaster prevention detection current flowing between the plus and minus terminals of the host device 10 when the pressure switch 14 is pressed, and reliably prevents the host device 10 from erroneously detecting the wiring current flowing between the plus and minus terminals of the host device 10 as the disaster prevention detection current during the internal wiring test. The description regarding the internal wiring test unit 20 is the same for the disaster prevention terminal devices 12(12-2) and 12(12-3).

[0094] (b3. Configuration of Disaster Prevention Terminal Device and Disaster Prevention System with Operation Switches Connected in Parallel) Next, the configuration of the disaster prevention terminal device and the disaster prevention system in the first embodiment will be described for the case where the disaster prevention terminal device has two pressure switches connected in parallel as operation switches. For this description, refer to FIG. 3 showing the first embodiment of the disaster prevention terminal device and the disaster prevention system with two pressure switches connected in parallel.

[0095] As shown in FIG. 3, the disaster prevention terminal devices 12(12-1) to 12(12-3) of this embodiment include two pressure switches 14 and 15 as operation switches, and the pressure switches 14 and 15 are connected in parallel.

[0096] The pressure switch 14 connects the first switch terminal 1410 to the first terminal 1610 of the terminal block 16 by the first internal wiring 1810, and connects the second switch terminal 1420 to the second terminal 1620 of the terminal block 16 by the second internal wiring 1820. This is the same as the first embodiment shown in FIG. 2.

[0097] Also, the first switch terminal 1410 of the push switch 14 is connected to the first switch terminal 1510 of the push switch 15 by the first parallel internal wiring 1710, and the second switch terminal 1420 of the push switch 14 is connected to the second switch terminal 1520 of the push switch 15 by the second parallel internal wiring 1720. The push switches 14 and 15 are connected in parallel by the parallel internal wiring.

[0098] The internal wiring test unit 20 is provided between the first switch terminal 1510 and the second switch terminal 1520 of the push switch 15 that is connected in parallel to the push switch 14. Specifically, a wiring test switch 22, a wiring test resistor 24, and a current display unit 26 of the internal wiring test unit 20 are connected in series between the first switch terminal 1510 and the second switch terminal 1520 of the push switch 15. Since the other configurations are the same as those of the first embodiment shown in FIG. 2, the same reference numerals are given and the description thereof is omitted.

[0099] During regular inspections or the like, for example, when testing the state of the internal wiring of the disaster prevention terminal device 12(12 - 1), go to the installation site of the disaster prevention terminal device 12(12 - 1) and press the wiring test switch 22 of the internal wiring test unit 20. When the wiring test switch 22 of the disaster prevention terminal device 12(12 - 1) is pressed, a wiring test current flows through a path from the plus terminal of the host device 10, through the signal line 1110, the first internal wiring 1810, the first parallel internal wiring 1710, the wiring test switch 22, the wiring test resistor 24, the current display unit 26, the second parallel internal wiring 1720, the second internal wiring 1820, and the common line 1120 to the minus terminal of the host device 10.

[0100] If the first internal wiring 1810, the second internal wiring 1820, the first parallel internal wiring 1710, and the second parallel internal wiring 1720 are normal, a wiring test current flows, so the LED of the current display unit 26 lights up to notify that the internal wiring is normal. If at least any one of the first internal wiring 1810, the second internal wiring 1820, the first parallel internal wiring 1710, and the second parallel internal wiring 172 is disconnected, the wiring test current does not flow, so the LED of the current display unit 26 does not light up, and it is notified that the internal wiring is disconnected.

[0101] In this way, even when a plurality of operation switches are connected in parallel, for example, when two push switches are connected in parallel as shown in FIG. 2, it is possible to test the states of the first internal wiring 1810, the second internal wiring 1820, the first parallel internal wiring 1710, and the second parallel internal wiring 1720 that serve as internal wiring and notify the state of the internal wiring.

[0102] [c. Emergency equipment] Subsequently, emergency equipment such as a tunnel to which the above-described disaster prevention system is applied will be described. The emergency equipment includes a fire hydrant device provided with an emergency notification device composed of a disaster prevention receiving panel to which a host device is applied and a transmitter to which a disaster prevention terminal device is applied, etc. The case where a plurality of fire hydrant devices are installed at predetermined intervals will be described.

[0103] (c1. Fire hydrant device) First, the fire hydrant device will be described. In this description, reference will be made to FIG. 4 showing the fire hydrant device from the front (front side), FIG. 5 showing a partial cross-section of the fire hydrant device as viewed from the plane (top surface), and FIG. 6 showing the electrical equipment door and the fire extinguisher door from the back side. Note that the cross-section shown in FIG. 5 shows the cross-section along the cut line a-a of FIG. 4.

[0104] Here, in the description of FIGS. 4 to 6, the X - Y - Z directions are directions orthogonal to each other. Specifically, when looking at the front of the fire hydrant device provided with various doors as the front, the X direction is the left - right direction, the Y direction is the up - down direction, and the Z direction is the front - back direction. Also, the +X side in the X direction is the right side, the -X side is the left side, the +Y side in the Y direction is the upper side, the -Y side is the lower side, the +Z side in the Z direction is the front side, and the -Z side is the back side. This is the same in FIGS. 7, 10, 15, and 16.

[0105] As shown in FIG. 4, the fire hydrant device 30 has a structure divided into a housing 50a whose interior is a fire hydrant storage part and a housing 50b whose interior is a fire extinguisher storage part, and decorative frames 51a, 51b are attached to the front surfaces of the housings 50a, 50b.

[0106] The door opening of the decorative frame 51a of the housing 50a is divided vertically. An inclined fire hydrant door 52 that opens downward by a hinge 52a is provided on the lower side of the door opening, and a maintenance door 54 that opens upward by a hinge 54a is provided on the upper side of the door opening. Inside the fire hydrant storage part, valves including a fire hose and a fire hydrant valve are stored.

[0107] On the left side of the door opening of the decorative frame 51b of the housing 50b, a fire extinguisher door 56 that opens horizontally to the left by a hinge 56a is provided. Inside the fire extinguisher storage part, for example, two fire extinguishers 68 are stored as shown in FIG. 5. Also, a viewing window 57 is provided below the fire extinguisher door 56, enabling confirmation of the presence or absence of the fire extinguisher 68 from the outside.

[0108] On the right side of the door opening of the decorative frame 51b, an electrical equipment door 58 that opens horizontally to the right by a hinge 58a is provided. On the electrical equipment door 58, for example, a red indicator light 60, a transmitter 62, and a response lamp 64 are provided as components of an emergency reporting device, and a telephone jack is provided inside the housing of the electrical equipment door 58.

[0109] The red indicator light 60 is always lit during normal times, making it possible to know the installation location of the fire hydrant device 30 from a distance. Also, when a pump start signal is transmitted from a pump start device 65 or a pump start interlocking device 66 (to be described later) to the disaster prevention receiving board, the red indicator lights 60 of all the fire hydrant devices 30 are controlled to blink simultaneously by the disaster prevention receiving board.

[0110] The transmitter 62 is a normally open and lock-type push switch that is pressed during a fire. When the push button of the transmitter 62 is pressed, the switch contacts of the push switch are closed to transmit a fire alarm signal (transmission signal) to the disaster prevention receiving board, causing the disaster prevention receiving board to output a fire alarm and, for example, to perform interlocking control of emergency facilities such as displaying a prohibition of entry into the tunnel on an alarm display board installed at the tunnel entrance. Such a transmitter 62 equipped with a push switch is a location where the disaster prevention terminal device 12 shown in FIG. 2 can be applied.

[0111] The response lamp 64 lights up by the response signal transmitted from the disaster prevention receiving panel when the disaster prevention receiving panel receives a fire alarm signal. Also, the response lamp 64 is connected to the disaster prevention receiving panel via an interlocking push switch for response lighting that is interlocked with the push switch of the transmitter 62, and lights up on the condition that the interlocking push switch for response lighting interlocked with the closing of the push switch of the transmitter 62 is closed.

[0112] The right side of the fire hydrant storage part in the housing 50a is a valve storage part, and a fire hose is connected to the water supply pipe drawn in from the outside via a water supply faucet, a fire hydrant valve, and an automatic pressure regulating valve. The fire hydrant valve is opened and closed by a fire hydrant valve opening / closing lever. When the fire hydrant valve opening / closing lever is opened, a normally open push switch of the pump start interlocking device 66, for example, a limit switch that detects the lever open position, etc., closes and transmits a pump start signal (transmission signal) to the disaster prevention receiving panel. The disaster prevention receiving panel controls the start of the fire pump facility, etc., and also controls the simultaneous flashing of the red display lamps 30 provided in all the fire hydrant devices 60.

[0113] Also, inside the maintenance door 54 that is opened, a pump start device 65 used by the fire brigade is provided. When the pump start device 65 is operated, similar to the pump start interlocking device 66, a normally open push switch closes and transmits a pump start signal (transmission signal) to the disaster prevention receiving panel. The disaster prevention receiving panel controls the start of the fire pump facility, etc., and also controls the simultaneous flashing of the red display lamps 30 provided in all the fire hydrant devices 60.

[0114] The push switch of the pump start device 65 and the push switch of the pump start interlocking device 66 are connected in parallel, and the disaster prevention receiving panel controls the start of the fire pump facility, etc., when it receives a pump start signal from either one of the devices. The pump start device 65 and the pump start interlocking device 66 provided with such push switches are locations where the disaster prevention terminal device 12 shown in FIG. 3 can be applied.

[0115] As shown in FIGS. 4 and 5, terminal boxes 70a and 70b equipped with terminal blocks are arranged on the inner back surface of the housing 50b behind the fire extinguisher door 56. A signal wiring (signal cable) for high-voltage power from the disaster prevention receiving panel is connected to the terminal block of the terminal box 70a, and internal wiring for the red indicator lamp 60 is also connected.

[0116] Also, a signal wiring (signal cable) for low-voltage power from the disaster prevention receiving panel is connected to the terminal block of the terminal box 70b, and internal wiring for the transmitter 62, response lamp 64, telephone jack, pump starting device 65, and pump start interlocking device 66 is connected.

[0117] Further, as an internal wiring test unit provided in the disaster prevention terminal device, for example, as shown in FIG. 6, an internal wiring test unit 2010 for testing the internal wiring for the push switch of the transmitter 62 and an internal wiring test unit 2020 for testing the internal wiring for the push switches of the pump starting device 65 and the pump start interlocking device 66 connected in parallel are arranged on the back side of the electrical equipment door 58. Wiring test switches 22 are operably provided in the internal wiring test units 2010 and 2020, and current display units 26 are provided so as to be confirmable. Note that although not shown in the figure, the internal wiring test units 2010 and 2020 also include wiring test resistors as shown in FIG. 2 or FIG. 3.

[0118] Also, on the back side of the electrical equipment door 58, a red indicator lamp 60, a transmitter 62, a telephone jack 67, and a response lamp 64 are attached in order from above by a mounting plate 69, and the internal wiring test units 2010 and 2020 are attached below the response lamp 64.

[0119] (c2. Opening of the electrical equipment door) Next, the opening of the electrical equipment door will be described. In this description, reference is made to FIG. 7 showing the electrical equipment door in the open state from the left side. Note that the fire extinguisher door is omitted in FIG. 7.

[0120] The electrical equipment door 58 arranged on the right side of the housing 50b can be opened as shown by the imaginary line in Fig. 5 with the fire extinguisher door 56 open. By opening the electrical equipment door 58, it is possible to perform inspections by pressing the pressure switch of the transmitter 62 and tests on the internal wiring by the internal wiring test units 2010 and 2020.

[0121] Here, the electrical equipment door 58 functions as a receiving part for temporarily fixing the fire extinguisher door 56. In order to function as the receiving part of the fire extinguisher door 56, as shown in Fig. 6, mounting pieces 59 with screw holes are provided at two upper and lower positions of the electrical equipment door 58. By screwing a knurled screw or a wing screw through the through hole of the fixing piece (receiving part) provided on the housing 50b side relative to the mounting piece 59 into the mounting piece 59, usually, the electrical equipment door 58 is temporarily fixed at the closed position in the door opening.

[0122] A magnet 5612 is provided at the center of the door frame of the electrical equipment door 58. By adsorbing and fixing a magnetic adsorption plate provided on the back surface of the door frame of the fire extinguisher door 56 (on the side of the door frame of the electrical equipment door 58) to the magnet 5612, the fire extinguisher door 56 is held (temporarily fixed) at the closed position.

[0123] Also, the door handle 5610 of the fire extinguisher door 56 is provided approximately at the center on the side of the electrical equipment door 58 (right side). By putting a hand on the door handle 5610 and pulling it forward, the magnetic adsorption by the magnet 5612 is released, and the fire extinguisher door 56 can be opened around the hinge 56a. The fire extinguisher door 56 is opened when using the fire extinguisher stored inside the housing 50b or the like.

[0124] On the other hand, when it is necessary to open the electrical equipment door 58, such as when replacing or repairing electrical equipment such as the transmitter 62 provided on the electrical equipment door 58 or performing regular inspections of the fire hydrant device 30, with the fire extinguisher door 56 open, the temporary fixing of the electrical equipment door 58 by a knurled screw or a wing screw or the like to the mounting piece 57 is released, and the electrical equipment door 58 can be opened around the hinge 58a.

[0125] For example, during the regular inspection of the fire hydrant device 30, as shown in FIG. 7, the electrical equipment door 58 is opened, and the wiring test switch 2210 of the internal wiring test unit 2010 arranged on the back side of the electrical equipment door 58 is pressed to check whether a wiring test current flows through the wiring path including the internal wiring to the push switch of the transmitter 62 according to the state of the LED of the current display unit 26, and to check the state of the internal wiring for the push switch of the transmitter 62. Similarly, by pressing the wiring test switch 2220 of the internal wiring test unit 2020, the state of the internal wiring for the push switches of the pump starting device 65 and the pump starting interlocking device 66 is checked. If an abnormality such as a disconnection is confirmed, repair measures such as replacing the internal wiring are taken. When replacing and repairing electrical equipment, for example, the electrical equipment door 58 is opened so that the back side of the electrical equipment door 58 is exposed to the front side.

[0126] (c3. Emergency equipment to which a disaster prevention system is applied) Next, the emergency equipment to which a disaster prevention system is applied will be described. In this description, reference is made to FIG. 8 showing the emergency equipment to which the first embodiment of the disaster prevention system shown in FIGS. 2 and 3 is applied.

[0127] As shown in FIG. 8, the emergency equipment includes a disaster prevention receiving panel 100 to which a host device is applied and a plurality of fire hydrant devices 30(30-1) to 30(30-3) to which disaster prevention terminal devices are applied. Note that the number of fire hydrant devices is arbitrary, and in the emergency equipment shown in FIG. 8, the number is the same as the number of disaster prevention terminal devices of the disaster prevention system shown in FIGS. 2 and 3, which is three.

[0128] From the disaster prevention receiving panel 100, a transmitter signal line 1112, a response signal line 1114, and a pump start signal line 116 are drawn out as signal lines, and a common common line 1120 is drawn out as a common line.

[0129] After the transmitter signal line 1112 is drawn out from the disaster prevention receiver panel 100, it is connected to the first terminal 1610 of the terminal block 16 of the first-stage fire hydrant device 30 (30-1), and further sequentially connected to the first terminal 1610 of the terminal block 16 of the second-stage fire hydrant device 30 (30-2) and the terminal 1610 of the terminal block 16 of the final-stage fire hydrant device 30 (30-3), and then connected to one end of the terminal resistance 2810.

[0130] Also, after the response signal line 1114 is drawn out from the disaster prevention receiver panel 100, it is connected to the third terminal 1612 of the terminal block 16 of the first-stage (first-stage) fire hydrant device 30 (30-1), and further sequentially connected to the third terminal 1612 of the terminal block 16 of the second-stage fire hydrant device 30 (30-2) and the terminal 1612 of the terminal block 16 of the final-stage (third-stage) fire hydrant device 30 (30-3).

[0131] Also, after the pump start signal line 1116 is drawn out from the disaster prevention receiver panel 100, it is connected to the fifth terminal 1614 of the terminal block 16 of the first-stage (first-stage) fire hydrant device 30 (30-1), and further sequentially connected to the fifth terminal 1614 of the terminal block 16 of the second-stage fire hydrant device 30 (30-2) and the fifth terminal 1614 of the terminal block 16 of the final-stage (third-stage) fire hydrant device 30 (30-3), and then connected to one end of the terminal resistance 2820.

[0132] Furthermore, after the common line 1120 is drawn out from the disaster prevention receiver panel 100, it is sequentially connected in the order of the fourth terminal 1622, the second terminal 1620, and the sixth terminal 1624 of the terminal block 16 of the first-stage (first-stage) fire hydrant device 30 (30-1), and further sequentially connected to the fourth terminal 1622, the second terminal 1620, and the sixth terminal 1624 of the terminal block 16 of the second-stage fire hydrant device 30 (30-2), and the fourth terminal 1622, the second terminal 1620, and the sixth terminal 1624 of the terminal block 16 of the final-stage (third-stage) fire hydrant device 30 (30-3). Then, it is connected to the other ends of the terminal resistances 2810 and 2820 from the sixth terminal 1624 of the terminal block 16 of the final-stage fire hydrant device 30 (30-3).

[0133] Taking the fire hydrant device 30 (30-1) as an example, the first terminal 1610 of the terminal block 16 to which the transmitter signal line 1112 is connected is connected to the first switch terminal 3210 of the transmitter pressing switch 32 of the transmitter 62 by the first internal wiring 1810, and the second terminal 1620 of the terminal block 16 to which the common line 1120 is connected is connected to the second switch terminal 3220 of the transmitter pressing switch 32 by the second internal wiring 1820.

[0134] When a road user presses the transmitter 62 due to a fire or the like, the transmitter pressing switch 32 closes (turns on), and a fire alarm current (transmission current) flows between the transmitter signal line 1112 and the common line 1120, thereby transmitting a fire alarm signal to the disaster prevention receiving panel 100, outputting a fire alarm, and performing interlock control.

[0135] Also, an internal wiring test unit 2010 is connected between the first switch terminal 3210 and the second switch terminal 3220 of the transmitter pressing switch 32 of the transmitter 62. Although not shown, as shown in FIG. 1, a wiring test switch 22, a wiring test resistor 24, and a current display unit 26 are connected in series in the internal wiring test unit 2010.

[0136] During the regular inspection of emergency equipment, the wiring test switch 22 provided in the internal wiring test unit 2010 is pressed. If the LED of the current display unit 26 lights up, the first internal wiring 1810 and the second internal wiring 1820 are normal. If the LED of the current display unit 26 does not light up, it can be determined that at least one of the first internal wiring 1810 and the second internal wiring 1820 is disconnected, and necessary repair measures such as replacing the internal wiring are taken.

[0137] Also, a transmitter interlock pressing switch 34 (interlock pressing switch for response lighting) is provided for the transmitter pressing switch 32 of the transmitter 62, and a response lamp 64 is connected between the third terminal 1612 of the terminal block 16 to which the response signal line 1114 is connected and the fourth terminal 1622 of the terminal block 16 to which the common line 1120 is connected via the transmitter interlock pressing switch 34.

[0138] Upon receiving a fire alarm signal due to the closing (turning on) of the transmitter push switch 32 associated with the pressing operation of the transmitter 62, the disaster prevention receiver 100 supplies DC48V as a response control voltage between the response signal line 1114 and the common line 1120. For example, when the fire hydrant device where the transmitter 62 is pressed is the fire hydrant device 30 (30-1), since the transmitter interlock push switch 34 is closed (turned on) in the fire hydrant device 30 (30-1), the response lamp 64 lights up due to the supply of the response control voltage. However, in the fire hydrant devices 30 (30-2) and 30 (30-3), since the transmitter 62 has not been operated, the transmitter interlock push switch 34 is open (turned off), and the response lamp 64 does not light up.

[0139] Also, the fifth terminal 1614 of the terminal block 16 to which the pump start signal line 1116 is connected is connected to the first switch terminal 3810 of the pump start push switch 38 of the pump start device 65 by the third internal wiring 1830, and the sixth terminal 1624 of the terminal block 16 to which the common line 1120 is connected is connected to the second switch terminal 3820 of the pump start push switch 38 by the fourth internal wiring 1840.

[0140] Also, a pump start interlock push switch 40 of a pump start interlock device 66 is connected in parallel to the pump start push switch 38 of the pump start device 65. That is, the first switch terminal 3810 of the pump start push switch 38 is connected to the first switch terminal 4010 of the pump start interlock push switch 40 by parallel internal wiring, and the second switch terminal 3820 of the pump start push switch 38 is connected to the second switch terminal 4020 of the pump start interlock push switch 40 by parallel internal wiring.

[0141] When a road user opens the fire hydrant valve due to a fire or the like, the pump start interlock push switch 40 of the pump start interlock device 66 closes (turns on), and a pump start current (transmission current) flows between the pump start signal line 1114 and the common line 1120 to transmit a pump start signal to the disaster prevention receiver 100, thereby controlling the activation of the fire pump equipment and the like.

[0142] Also, when the fire department performs a pressing operation on the pump starting device 65, the pump start pressing switch 38 closes (turns on). Similarly, a pump start current (transmission current) is passed between the pump start signal line 1114 and the common line 1120 to transmit a pump start signal to the disaster prevention receiving panel 100, and control such as starting the fire pump facility is performed.

[0143] Also, an internal wiring test unit 2020 is connected between the first switch terminal 4010 and the second switch terminal 4020 of the pump start interlock pressing switch 40 connected in parallel with the pump start pressing switch 38. Although not shown, as shown in FIG. 3, the internal wiring test unit 2020 has a wiring test switch 22, a wiring test resistor 24, and a current display unit 26 connected in series.

[0144] During the regular inspection of the emergency equipment, the wiring test switch 22 provided in the internal wiring test unit 2020 is pressed. If the LED of the current display unit 26 lights up, the third internal wiring 1830, the fourth internal wiring 1840, and the parallel internal wiring are normal. If the LED of the current display unit 26 does not light up, it can be determined that at least one of the third internal wiring 1830, the fourth internal wiring 1840, and the parallel internal wiring is disconnected, and necessary repair measures such as replacing the internal wiring are taken.

[0145] Although the fire hydrant device 30 (30-1) has been described as an example, the same applies to the fire hydrant devices 30 (30-2) and 30 (30-3).

[0146] [d. Internal Wiring Test Unit with Lighting Test Function] Subsequently, the internal wiring test unit with a lighting test function will be described. In this description, reference is made to FIG. 9 showing a disaster prevention system in which a lighting test function is provided in the internal wiring test unit of the disaster prevention system shown in FIG. 2, and FIG. 10 showing an open electrical equipment door from the left side with an internal wiring test unit having a lighting test function provided.

[0147] Taking the disaster prevention terminal device 12(12-1) as an example, in the internal wiring test unit 20 of this embodiment, a wiring test switch 22, a current display unit 26, and a wiring test resistor 24 are connected in series between the first switch terminal 1410 and the second switch terminal 1420 of the push switch 14. When compared with the internal wiring test unit 20 in FIG. 2, although the order of connecting the wiring test resistor 24 and the current display unit 26 is reversed, there is no difference in the test function of the internal wiring.

[0148] In addition, the internal wiring test unit 20 includes a lighting test switch 25, which is a non-locking push button switch having two normally open switch contacts 25a and 25b for performing a lighting test on the LED of the current display unit 26.

[0149] One of the switch contacts 25a of the lighting test switch 25 is connected to the first terminal 1610 of the terminal block 16 to which the signal line 1110 from the host device 10 is connected via a lighting test resistor 27, and the other of the switch contacts 25a is connected between the wiring test switch 22 and the current display unit 26, that is, to the anode side of the LED.

[0150] Also, one of the switch contacts 25b of the lighting test switch 25 is connected between the current display unit 26 and the wiring test resistor 24, that is, to the cathode side of the LED, and the other of the switch contacts 25b is connected to the second terminal 1620 of the terminal block 16 to which the common line 1120 from the host device 10 is connected.

[0151] Since the other configurations are the same as those in the embodiment shown in FIG. 2, the same reference numerals are given and the description thereof is omitted. Also, the description of the internal wiring test unit 20 has been given by taking the disaster prevention terminal device 12(12-1) as an example, but the same applies to the internal wiring test units 20 of the disaster prevention terminal devices 12(12-2) and 12(12-3).

[0152] In addition, the configuration in which the internal wiring test unit 20 is provided with the LED lighting test function of the current display unit 26 is also similarly applicable to the internal wiring test unit 20 in the embodiment where the operation switches shown in FIG. 3 are connected in parallel, and the internal wiring test units 2010 and 2020 provided in the fire hydrant device of the emergency equipment to which the disaster prevention system shown in FIG. 8 is applied.

[0153] FIG. 10 shows a fire hydrant device 30 in which the electrical equipment door 58 provided with the internal wiring test units 2010 and 2020 provided in the emergency equipment shown in FIG. 8 is in an open state, as viewed from the left side, when the internal wiring test unit 20 having the inspection test function shown in FIG. 9 is applied.

[0154] On the back side of the electrical equipment door 58, similar to the fire hydrant device 30 shown in FIG. 7, a red indicator lamp 60, a transmitter 62, a telephone jack 67, and a response lamp 64 are arranged in order from the top, and the internal wiring test units 2010 and 2020 are arranged below them. In the internal wiring test units 2010 and 2020, in addition to the wiring test switch 22 and the current display unit 26, a lighting test switch 25 is arranged.

[0155] During the regular inspection of the fire hydrant device 30, before performing the test of the internal wiring by pressing the wiring test switch 22, the lighting test switch 25 is pressed to confirm whether the LED of the current display unit 26 lights up normally.

[0156] When the lighting test switch 25 is pressed, the switch contacts 25a and 25b shown in FIG. 9 are closed (turned on), the current display unit 26 is connected between the signal line 1110 and the common line 11120, a lighting test current corresponding to the resistance value of the lighting test resistor 27 flows through the current display unit 26, and it is confirmed whether the LED of the current display unit 26 lights up normally. Further, when the lighting test switch 25 is pressed, even if a disconnection occurs in the first internal wiring 1810 and the second internal wiring 1820, since a lighting test current flows through the current display unit 26, the state of the current display unit 26 can be confirmed without being affected by the disconnection of the internal wiring.

[0157] When the LED of the current display unit 26 does not light up, it is determined that the current display unit 26 is faulty, and repair measures such as replacing the LED are taken. When the LED of the current display unit 26 lights up, it is determined that the current display unit 26 is normal. Subsequently, the wiring test switch 22 is pressed to test the internal wiring, and the state of the internal wiring is confirmed from the state of the LED of the current display unit 26 by the internal wiring test.

[0158] [e. Second Embodiment of Disaster Prevention Terminal Device and Disaster Prevention System] Subsequently, a second embodiment of a disaster prevention terminal device and a disaster prevention system will be described, which is an embodiment in which the internal wiring test unit includes a wiring test switch, a wiring monitoring resistor, a current display unit, and a disconnect switch.

[0159] (e1. Configuration of Disaster Prevention Terminal Device and Disaster Prevention System) First, the configuration of the disaster prevention terminal device and the disaster prevention system in the second embodiment will be described in the case where the disaster prevention terminal device includes one push switch as an operation switch. In this description, refer to FIG. 11 showing the second embodiment of the disaster prevention terminal device and the disaster prevention system.

[0160] As shown in FIG. 11, in this embodiment, a signal line 1110 and a common line 1120 are drawn out from the upper device 10, and the signal line 1110 is sequentially connected to the disaster prevention terminal devices 12(12-1) to 12(12-3) via a disconnect switch 72 to be described later, and the common line 1120 is sequentially connected to the disaster prevention terminal devices 12(12-1) to 12(12-3). A termination resistor 28 is connected to the terminals of the signal line 1110 and the common line 1120.

[0161] Taking the disaster prevention terminal device 12(12-1) as an example, similar to the first embodiment in FIG. 2, the disaster prevention terminal device 12(12-1) includes a push switch 14 and a terminal block 16. The first internal wiring 1810 connects between the first terminal 1610 of the terminal block 16 and the first switch terminal 1410 of the push switch 14, and the second internal wiring 1820 connects between the second terminal 1620 of the terminal block 16 and the second switch terminal 1420 of the push switch 14.

[0162] Further, an internal wiring test unit 20 is connected between the first switch terminal 1410 and the second switch terminal 1420 of the push switch 14, and a wiring test switch 22, a wiring test resistor 24, and a current display unit 26 are connected in series between the first switch terminal 1410 and the second switch terminal 1420 of the push switch 14.

[0163] In the second embodiment, it is different from the first embodiment in that a disconnect switch 72 is provided in the internal wiring connection unit 20. The disconnect switch 72 is a normally closed push switch, and is a switch that is opened (turned off) in conjunction with the closing (turning on) of the wiring test switch 22.

[0164] The disconnect switch 72 is connected between the first terminal 1610 of the terminal block 16 to which the signal line 1110 from the upper device 10 is connected, and the third terminal 1612 of the terminal block 16 to which the signal line 1110 to the second-stage fire hydrant device 30 (30-2) is connected.

[0165] When testing the state of the internal wiring of the disaster prevention terminal device 12 (12-1) during regular inspections or the like, the wiring test switch 22 of the internal wiring test unit 20 is pressed, and the disconnect switch 72 is opened (turned off) in conjunction with the closing (turning on) of the wiring test switch 22, disconnecting the signal line 1110 and the common line 1120 connected to the disaster prevention terminal devices 12 (12-2) and 12 (12-3).

[0166] That is, in the state where the disconnect switch 72 is opened (turned off), only the disaster prevention terminal device 12 (12-1) is connected between the plus terminal and the minus terminal of the upper device 10, and the path through which current flows between the plus terminal and the minus terminal of the upper device is only the path passing through the wiring test switch 22, the wiring test resistor 24, and the current display unit 26 of the internal wiring test unit 20 provided in the disaster prevention terminal device 12 (12-1).

[0167] Therefore, when the internal wiring of the disaster prevention terminal device 12(12-1) is tested by the internal wiring test unit 20, a wiring test current corresponding to the resistance value of the wiring test resistor 24 will flow between the plus terminal and the minus terminal of the upper device 10. For example, if the wiring voltage applied by the upper device 10 is 48V and the resistance value of the wiring test resistor 24 is 9.6 kΩ, a wiring test current of 5 mA will flow.

[0168] Also, if the resistance value of the termination resistor 28 is the same as that of the wiring test resistor 24, which is 9.6 kΩ, a 5 mA status monitoring current will flow between the plus terminal and the minus terminal of the upper device 10 during normal operation. The wiring current flowing from the plus terminal to the minus terminal of the upper device 10 will not increase from the normal state during the internal wiring test. Therefore, it is easier to distinguish between the disaster prevention detection current flowing when the push switch 14 is pressed and the wiring current (only the wiring test current in the second embodiment) flowing during the internal wiring test than in the first embodiment. Also, the disaster prevention detection current can be set to a lower current value than in the first embodiment, making it possible to reduce power consumption.

[0169] Although the disaster prevention terminal device 12(12-1) has been described as an example, the description regarding the disaster prevention terminal device including the disconnect switch is the same for the disaster prevention terminal devices 12(12-2) and 12(12-3).

[0170] (e2. Configuration of a disaster prevention terminal device and a disaster prevention system with operation switches connected in parallel) Next, the configuration of the disaster prevention terminal device and the disaster prevention system in the second embodiment will be described in the case where the disaster prevention terminal device has two push switches connected in parallel as operation switches. For this description, refer to FIG. 12 showing the second embodiment of the disaster prevention terminal device and the disaster prevention system with two push switches connected in parallel.

[0171] As shown in Fig. 12, taking the disaster prevention terminal device 12(12-1) of this embodiment as an example, the disaster prevention terminal devices 12(12-1) to 12(12-3) are equipped with two push switches 14 and 15 as operation switches. Similar to the first embodiment shown in Fig. 3, the push switches 14 and 15 are connected in parallel, and an internal wiring test unit 20 is connected between the first switch terminal 1510 and the second switch terminal 1520 of the push switch 15. Between the first switch terminal 1510 and the second switch terminal 1520 of the push switch 15, a wiring test switch 22, a wiring test resistor 24, and a current display unit 26 provided in the internal wiring test unit 20 are connected in series.

[0172] In the second embodiment, it is different from the first embodiment in that a disconnect switch 72 is provided in the internal wiring test unit 20. The disconnect switch 72 is the same as the disconnect switch 72 in Fig. 11. It is a normally closed push switch and is a switch that is opened (turned off) in conjunction with the closing (turning on) of the wiring test switch 22. It is connected between the first terminal 1610 of the terminal block 16 to which the signal line 1110 from the host device 10 is connected and the third terminal 1612 of the terminal block 16 to which the signal line 1110 to the second-stage fire hydrant device 30(30-2) is connected.

[0173] Therefore, similar to the embodiment in Fig. 11, when testing the state of the internal wiring of the disaster prevention terminal device 12(12-1) during regular inspections or the like, a wiring test current corresponding to the resistance value of the wiring test resistor 24 will flow between the positive terminal and the negative terminal of the host device 10. For example, if the wiring voltage applied by the host device 10 is 48V and the resistance value of the wiring test resistor 24 is 9.6 kΩ, a wiring test current of 5 mA will flow.

[0174] Also, if the resistance value of the terminal resistor 28 is set to the same 9.6 kΩ as the wiring test resistor 24, a 5 mA status monitoring current will flow between the plus terminal and the minus terminal of the host device 10 during normal operation, and the wiring current flowing from the plus terminal to the minus terminal of the host device 10 will not increase during the internal wiring test. Therefore, it is easier to distinguish between the disaster prevention detection current flowing when the push switch 14 is pressed and the wiring current flowing during the internal wiring test (only the wiring test current in the second embodiment) than in the first embodiment, and the disaster prevention detection current can be set to a lower current value than in the first embodiment, enabling power consumption reduction.

[0175] Although the disaster prevention terminal device 12(12 - 1) has been described as an example, the description of the disaster prevention terminal device including the disconnect switch is the same for the disaster prevention terminal devices 12(12 - 2) and 12(12 - 3).

[0176] Also, the disaster prevention terminal devices 12(12 - 1) to 12(12 - 3) of FIG. 11 described as the second embodiment are applied to the transmitters 62 of the fire hydrant devices 30(30 - 1) to 30(30 - 3) provided in the emergency equipment shown in FIG. 8, and the disaster prevention terminal devices 12(12 - 1) to 12(12 - 3) of FIG. 12 are applied to the pump starting device 65 and the pump start interlocking device 66 of the fire hydrant devices 30(30 - 1) to 30(30 - 3) provided in the emergency equipment shown in FIG. 8.

[0177] [f. Third Embodiment of Disaster Prevention Terminal Device and Disaster Prevention System] Subsequently, a third embodiment of a disaster prevention terminal device and a disaster prevention system, which is an embodiment in which the internal wiring test unit is provided in an external device, will be described.

[0178] (f1. Configuration of Disaster Prevention Terminal Device and Disaster Prevention System) First, the configuration of the disaster prevention terminal device and the disaster prevention system in the third embodiment will be described in the case where the disaster prevention terminal device has one push switch as an operation switch. In this description, refer to FIG. 13 showing the third embodiment of the disaster prevention terminal device and the disaster prevention system.

[0179] As shown in FIG. 13, in this embodiment, similar to the first embodiment in FIG. 2, a signal line 1110 and a common line 1120 are drawn out from the upper-level device 10, and the signal line 1110 and the common line 1120 are sequentially connected to the disaster prevention terminal devices 12(12-1) to 12(12-3), and a termination resistor 28 is connected to the terminals of the signal line 1110 and the common line 1120.

[0180] Also, taking the disaster prevention terminal device 12(12-1) as an example, the disaster prevention terminal devices 12(12-1) to 12(12-3) include a pressing switch 14 and a terminal block 16, similar to the first embodiment in FIG. 2. The first internal wiring 1810 connects between the first terminal 1610 of the terminal block 16 and the first switch terminal 1410 of the pressing switch 14, and the second internal wiring 1820 connects between the second terminal 1620 of the terminal block 16 and the second switch terminal 1420 of the pressing switch 14.

[0181] In the third embodiment, unlike the first and second embodiments, an internal wiring test section for testing the internal wiring is not provided in the disaster prevention terminal devices 12(12-1) to 12(12-3). Instead, an internal wiring test section 20 is provided in a portable test device 74 that can perform the internal wiring test by connecting to the disaster prevention terminal device.

[0182] The internal wiring test section 20 provided in the test device 74 has a wiring test switch 22, a current display section 26, and a wiring test resistor 24 connected in series, and a series circuit of a lighting confirmation switch 76 and a battery power supply 77 is connected in parallel to the current display section 26. Note that, compared with the internal wiring test section 20 in FIG. 2, the order of connecting the wiring test resistor 24 and the current display section 26 is reversed, but there is no difference in the internal wiring test function.

[0183] Also, in the third embodiment, a test connector 78 is provided to enable connection of the test device 74 to the disaster prevention terminal device for internal wiring testing. The structure and type of the test connector 78 are arbitrary. In this embodiment, for example, it is composed of a connector jack 80 provided on the disaster prevention terminal device side to ensure waterproofness and a connector plug 82 provided on the test device 74 side.

[0184] To the connector jack 80 provided on the disaster prevention terminal device side, a connector wiring 8010 from the first switch terminal 1410 of the push switch 14 and a connector wiring 8020 from the second switch terminal 1420 of the push switch 14 are connected.

[0185] Also, to the connector plug 82 provided on the test device 74 side, a connector wiring 7410 from the wiring test switch 22 and a connector wiring 7420 from the wiring test resistor 24 are connected.

[0186] In the case of performing a test of the internal wiring of the disaster prevention terminal device 12 (12-1) during regular inspection or the like, the test device 74 is connected to the disaster prevention terminal device 12 (12-1) by the test connector 78, and the wiring test switch 22 is pressed.

[0187] When the wiring test switch 22 is pressed, a wiring test current flows through a path from the plus terminal of the host device 10, through the signal line 1110, the first internal wiring 1810, the connector wiring 8010, the test connector 78, the connector wiring 7410, the wiring test switch 22, the current display unit 26, the wiring test resistor 24, the connector wiring 7420, the test connector 78, the connector wiring 8020, the second internal wiring 1820, and the common line 1120 to the minus terminal of the host device 10.

[0188] If the first internal wiring 1810, the second internal wiring 1820, and the connector wirings 7410, 7420, 8010, 8020 are normal, the wiring test current flows, so the LED of the current display unit 26 lights up. If there is a disconnection in any of the first internal wiring 1810, the second internal wiring 1820, and the connector wirings 7410, 7420, 8010, 8020, the wiring test current does not flow, so the LED of the current display unit 26 does not light up, enabling identification of the disconnected wiring and taking measures such as replacement and repair.

[0189] In addition, the test device 74 has a lighting test function for the LEDs of the current display unit 26. Before connecting the test device 74 to the disaster prevention terminal device and conducting a test on the internal wiring, the lighting confirmation switch 76 provided on the test device 74 is pressed, and a current is passed from the battery power supply 77 to the LEDs of the current display unit 26, so that it can be confirmed whether the LEDs of the current display unit 26 light up.

[0190] Although the disaster prevention terminal device 12(12-1) has been described as an example, the description of the disaster prevention terminal device is the same for the disaster prevention terminal devices 12(12-2) and 12(12-3). Since the third embodiment does not provide an internal wiring test unit for the disaster prevention terminal devices 12(12-1) to 12(12-3), the configuration of the disaster prevention terminal device is simplified, and the cost can be reduced.

[0191] (f2. Configuration of a disaster prevention terminal device and a disaster prevention system with operation switches connected in parallel) Next, regarding the configuration of the disaster prevention terminal device and the disaster prevention system in the third embodiment, a case where the disaster prevention terminal device has two push switches connected in parallel as operation switches will be described. For this description, refer to FIG. 14 showing the third embodiment of the disaster prevention terminal device and the disaster prevention system with two push switches connected in parallel.

[0192] As shown in FIG. 14, the disaster prevention terminal devices 12(12-1) to 12(12-3) of this embodiment, taking the disaster prevention terminal device 12(12-1) as an example, are provided with two push switches 14 and 15 as operation switches. Similar to the first embodiment shown in FIG. 3, the push switches 14 and 15 are connected in parallel.

[0193] In the third embodiment, unlike the first and second embodiments, the disaster prevention terminal devices 12(12-1) to 12(12-3) are not provided with an internal wiring test unit for conducting an internal wiring test. Instead, an internal wiring test unit 20 is provided in a portable test device 74 that can conduct an internal wiring test by connecting to the disaster prevention terminal device.

[0194] The test device 74 is the same as the test device 74 shown in FIG. 13. The wiring test switch 22, the current display unit 26, and the wiring test resistor 24 are connected in series, and a series circuit of the lighting confirmation switch 76 and the battery power supply 77 is connected in parallel to the current display unit 26.

[0195] Also, the test connector 78 is the same as the test connector 78 shown in FIG. 13, and is composed of a connector jack 80 provided on the disaster prevention terminal device side and a connector plug 82 provided on the test device 74 side.

[0196] Connected to the connector jack 80 provided on the disaster prevention terminal device side are the connector wiring 8010 from the first switch terminal 1510 of the push switch 15 and the connector wiring 8020 from the second switch terminal 1520 of the push switch 15.

[0197] Also, connected to the connector plug 82 provided on the test device 74 side are the connector wiring 7410 from the wiring test switch 22 and the connector wiring 7420 from the wiring test resistor 24.

[0198] In the case of performing a test on the internal wiring of the disaster prevention terminal device 12(12-1) during regular inspection or the like, the test device 74 is connected to the disaster prevention terminal device 12(12-1) by the test connector 78, and the wiring test switch 22 is pressed.

[0199] When the wiring test switch 22 is pressed, a wiring test current flows through a path from the plus terminal of the host device 10, through the signal line 1110, the first internal wiring 1810, the first parallel internal wiring 1710, the connector wiring 8010, the test connector 78, the connector wiring 7410, the wiring test switch 22, the current display unit 26, the wiring test resistor 24, the connector wiring 7420, the test connector 78, the connector wiring 8020, the second parallel internal wiring 1720, the second internal wiring 1820, and the common line 1120 to the minus terminal of the host device 10.

[0200] If the first internal wiring 1810, the second internal wiring 1820, the first parallel internal wiring 1710, the second parallel internal wiring 1720, and the connector wirings 7410, 7420, 8010, and 8020 are normal, a wiring test current flows, so the LED of the current display unit 26 lights up. If there is a disconnection in at least any one of the first internal wiring 1810, the second internal wiring 1820, the first parallel internal wiring 1710, the second parallel internal wiring 1720, and the connector wirings 7410, 7420, 8010, and 8020, the wiring test current does not flow, so the LED of the current display unit 26 does not light up, and the disconnected wiring can be identified to enable countermeasures such as replacement and repair.

[0201] Also, the test device 74 has a function of testing the lighting of the LED of the current display unit 26. Before connecting the test device 74 to the disaster prevention terminal device and performing a test on the internal wiring, the lighting confirmation switch 76 provided on the test device 74 is pressed, and by flowing a current from the battery power supply 77 to the LED of the current display unit 26, it is possible to confirm whether the LED of the current display unit 26 lights up.

[0202] Although the disaster prevention terminal device 12(12 - 1) has been described as an example, the description regarding the disaster prevention terminal device is the same for the disaster prevention terminal devices 12(12 - 2) and 12(12 - 3). Since the third embodiment does not provide an internal wiring test unit for the disaster prevention terminal devices 12(12 - 1) to 12(12 - 3), the configuration of the disaster prevention terminal device becomes simple, and it is possible to reduce costs.

[0203] (f3. Emergency equipment to which the disaster prevention system of the third embodiment is applied) Subsequently, the emergency equipment to which the disaster prevention system of the third embodiment is applied will be described. In this description, refer to FIG. 15 showing the electrical equipment door and the fire extinguisher door of the fire hydrant device to which the disaster prevention terminal device of the third embodiment is applied from the back side, and FIG. 16 showing the open electrical equipment door of the fire hydrant device to which the disaster prevention terminal device of the third embodiment is applied from the left side.

[0204] The disaster prevention terminal devices 12(12-1) to 12(12-3) of FIG. 13 described as the third embodiment are applied to the transmitters 62 of the fire hydrant devices 30(30-1) to 30(30-3) provided in the emergency equipment shown in FIG. 8, and the disaster prevention terminal devices 12(12-1) to 12(12-3) of FIG. 14 are applied to the pump starting device 65 and the pump start interlocking device 66 of the fire hydrant devices 30(30-1) to 30(30-3) provided in the emergency equipment shown in FIG. 8.

[0205] When the disaster prevention test device of the third embodiment is applied to the fire hydrant device in this way, the connector jacks 80 and 84 provided in the fire hydrant device 30 are arranged on the back side of the electrical equipment door 58 of the fire hydrant device 30 as shown in FIG. 15. Since the back surface structures of the fire extinguisher door 56 and the electrical equipment door 58 shown in FIG. 15 are the same as those shown in FIG. 6, the same reference numerals are given and the description thereof is omitted.

[0206] Here, the connector jacks 80 and 84 have the same structure as the telephone jack 67 arranged on the back side of the electrical equipment door 78, and the jack holes of the connector jacks 80 and 84 are closed by screwing in the cap to form a waterproof structure.

[0207] Therefore, for example, as shown in FIG. 16, when connecting the connector plug 82 of the test device 74 to the connector jack 80, the electrical equipment door 58 is opened to expose the back side, the cap of the connector jack 80 is removed, and the connector plug 82 of the test device 74 is inserted into the connector jack 80 for connection. When the wiring test switch 22 of the test device 74 is pressed in this state, if the internal wiring to the transmitter pressing switch 32 of the transmitter 62 is normal, the LED of the current display unit 26 lights up. If any of the internal wirings is disconnected, the LED of the current display unit 26 does not light up, and the disconnected internal wiring is identified and dealt with by replacement repair or the like.

[0208] When connecting the connector plug 82 of the test device 74 to the connector jack 84, similarly, the electrical equipment door 58 is opened to expose the back side, the cap of the connector jack 84 is removed, and the connector plug 82 of the test device 74 is inserted into the connector jack 84 for connection.

[0209] When the wiring test switch 22 of the test device 74 is pressed in this state, if the internal wiring for the pump start pressing switch 38 of the pump start device 65 and the pump start interlocking pressing switch 40 of the pump start interlocking device 66 is normal, the LED of the current display unit 26 lights up. On the other hand, if any of the internal wirings is disconnected, the LED of the current display unit 26 does not light up, and the disconnected internal wiring is identified and dealt with by replacement repair or the like.

[0210] [g. Modification example of the present invention] A modification example of the disaster prevention terminal device and the disaster prevention system according to the present invention will be described. The disaster prevention terminal device and the disaster prevention system of the present invention include the following modifications in addition to the above-described embodiment.

[0211] (Disaster prevention system) In the above embodiment, the case where the disaster prevention system is applied to emergency facilities such as tunnels is taken as an example. However, the devices and facilities to which the disaster prevention terminal device and the disaster prevention system are applied are arbitrary. For example, the disaster prevention terminal device may be applied to a manual reporting device connected to a disaster prevention receiving board. The manual reporting device is provided with a transmitter, and by making it possible to similarly test the internal wiring for the transmitter, it is possible to monitor the state of the internal wiring.

[0212] (The number of pressing switches provided in the disaster prevention terminal device and the number of connection terminals of the terminal block used) The number of pressing switches provided in the disaster prevention terminal device shown in the above embodiment and the number of connection terminals of the terminal block used corresponding to the number of pressing switches are merely examples and are not limited thereto. The disaster prevention terminal device is appropriately configured corresponding to the number of pressing switches, and the disaster prevention terminal device is connected to the signal wiring from the upper device to form a disaster prevention system, enabling the monitoring of the state of the internal wiring and the signal wiring.

[0213] (Monitoring of wiring deterioration and disconnection signs) Further, the host device 10 may be configured to determine the degradation of the internal wiring. For example, by detecting that the wiring test current exceeds a predetermined value, insulation degradation of the internal wiring may be detected, or by detecting that the wiring test current is below a predetermined value, a sign of disconnection of the internal wiring may be detected.

[0214] (Current display unit) Also, in the above embodiment, the current display unit 26 of the internal wiring test unit 20 includes a light emitting unit using an LED, but the configuration for displaying the state of the wiring test current is not limited to this. For example, the current display unit 26 may include an ammeter, a bar graph display, or the like.

[0215] (Others) Further, the present invention includes appropriate modifications that do not impair its object and advantages, and is not limited by the numerical values shown in the above embodiments.

Explanation of reference numerals

[0216] 10: Host device 1010: Wiring monitoring unit 11: Signal wiring 1110: Signal line 1112: Transmitter signal line 1114: Response signal line 1116: Pump start signal line 1120: Common line 12(12 - 1)~12(12 - 3): Disaster prevention terminal device 14, 15: Push switch 1410, 1510, 3210, 3810, 4010: First switch terminal 1420, 1520, 3220, 3820, 4020: Second switch terminal 16: Terminal block 1610: First terminal 1612: Third terminal 1614: Fifth terminal 1620: Second terminal 1622: Fourth terminal 1624: Sixth terminal 1710: First parallel internal wiring 1720: Second Parallel Internal Wiring 1810: First Internal Wiring 1820: Second Internal Wiring 1830: Third Internal Wiring 1840: Fourth Internal Wiring 20, 2010, 2020: Internal Wiring Test Section 22: Wiring Test Switch 24: Wiring Test Resistor 25, 76: Lighting Test Switch 25a, 25b: Switch Contact 26: Current Display Section 27: Lighting Test Resistor 28, 2810, 2820: Terminal Resistor 30, 30(30 - 1)~30(30 - 3): Fire Hydrant Device 32: Transmitter Press Switch 34: Transmitter Press Interlocking Switch 38: Pump Start Press Switch 40: Pump Start Interlocking Press Switch 50a, 50b: Housing 51a, 51b: Decorative Frame 52: Fire Hydrant Door 52a, 56a, 58a: Hinge 5610: Door Handle 54: Maintenance Door 56: Fire Extinguisher Door 57: Peephole 58: Electrical Equipment Door 60: Red Indicator Light 62: Transmitter 64: Response Lamp 65: Pump Start Device 66: Pump Start Interlocking Device 67: Telephone Jack 68: Fire Extinguisher 69: Mounting Plate 70a, 70b: Terminal Box 72: Disconnect Switch 74: Test Device 77: Battery Power Supply 78: Test Connector 7410, 7420, 8010, 8020: Connector Wiring 80, 84: Connector Jack 82: Connector plug 100: Disaster prevention receiver panel

Claims

1. An emergency prevention terminal device having a first switch terminal and a second switch terminal, and an operation switch for short-circuiting between the first switch terminal and the second switch terminal by a predetermined operation, A first wiring connection portion to which one of a pair of signal wirings from the outside and a first internal wiring led out from the first switch terminal of the operation switch is connected, A second wiring connection portion to which the other of a pair of signal wirings from the outside and a second internal wiring led out from the second switch terminal of the operation switch is connected, comprising: An emergency prevention terminal device, characterized in that an internal wiring test unit for testing the states of the first internal wiring and the second internal wiring is provided between the first switch terminal and the second switch terminal of the operation switch.

2. The emergency prevention terminal device according to claim 1, wherein the internal wiring test unit serially connects a wiring test operation unit, a wiring monitoring resistor, and a current display unit between the first switch terminal and the second switch terminal of the operation switch, and the state of the first internal wiring and the second internal wiring is notified by displaying, on the current display unit, the state of a wiring test current flowing through a wiring path including the first internal wiring, the second internal wiring, and the internal wiring test unit corresponding to the wiring monitoring resistor by an operation of the wiring test operation unit.

3. The emergency prevention terminal device according to claim 2, wherein the current display unit includes a light emitting unit that lights up by a current flowing corresponding to the wiring monitoring resistor when the wiring test operation unit is operated, thereby notifying that the states of the first internal wiring and the second internal wiring are normal.

4. The emergency prevention terminal device according to claim 2, The internal wiring test unit further includes a display test unit that, by the operation of the display test operation unit, passes a current to the current display unit without passing through the first internal wiring and the second internal wiring, and checks the display by the current display unit. The disaster prevention terminal device is characterized by this.

5. The disaster prevention terminal device according to claim 1, wherein the internal wiring test unit is provided in a predetermined test device that can be connected to the disaster prevention terminal device, and by connecting the test device to the disaster prevention terminal device, the internal wiring test unit is provided between the first switch terminal and the second switch terminal of the operation switch. The disaster prevention terminal device is characterized by this.

6. The disaster prevention terminal device according to claim 1, further includes another operation switch connected in parallel to the operation switch, wherein between the first switch terminal of the operation switch and the first switch terminal of the other operation switch, and between the second switch terminal of the operation switch and the second switch terminal of the other operation switch are connected by parallel internal wiring, and the internal wiring test unit is provided between the first switch terminal and the second switch terminal of the other operation switch, so as to be provided between the first switch terminal and the second switch terminal of the operation switch, and to test the state of the parallel internal wiring in addition to the first internal wiring and the second internal wiring. The disaster prevention terminal device is characterized by this.

7. A disaster prevention system including a plurality of the disaster prevention terminal devices according to any one of claims 1 to 6, wherein one of the pair of signal wirings drawn from the upper device is sequentially connected to the first wiring connection part of each disaster prevention terminal device, and the other of the pair of signal wirings is sequentially connected to the second wiring connection part of each disaster prevention terminal device, and the ends of one of the pair of signal wirings and the other of the pair of signal wirings are connected via a termination resistor, and the upper device monitors the state of the pair of signal wirings. The disaster prevention system is characterized by this.

8. The disaster prevention system according to claim 7, wherein the first wiring connection part comprises a first wiring connection point to which a signal wiring drawn from the upstream side and the first internal wiring are connected, and a second wiring connection point to which a signal wiring drawn to the downstream side is connected, and the internal wiring test part is provided between the first wiring connection point and the second wiring connection point, and is characterized by comprising a disconnecting switch that disconnects the connection between the first wiring connection point and the second wiring connection point in conjunction with a predetermined test operation.

9. The disaster prevention system according to claim 8, wherein the upper device is a disaster prevention receiving panel, and the disaster prevention terminal device is a predetermined device provided in a fire hydrant device connected to a signal wiring from the disaster prevention receiving panel.

10. The disaster prevention system according to claim 9, wherein the predetermined device serving as the disaster prevention terminal device is a transmitter provided with a push switch that transmits a fire alarm signal to the disaster prevention receiving panel when a pressing operation is performed as the operation switch, and the internal wiring test part tests the state of the internal wiring with respect to the push switch of the transmitter.

11. The disaster prevention system according to claim 9, wherein the predetermined device serving as the disaster prevention terminal device is a pump starting device provided with a push switch that transmits a pump starting signal to the disaster prevention receiving panel when a pressing operation is performed as the operation switch, and a pump starting interlocking device provided with a push switch that is connected in parallel to the push switch of the pump starting device as the operation switch and detects an opening operation of a fire hydrant valve and transmits a pump starting signal to the disaster prevention receiving panel, and The disaster prevention system is characterized in that the internal wiring test unit tests the state of the internal wiring with respect to the push switches of the pump starting device and the pump starting interlocking device.

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