Disaster prevention monitoring system receiver

Abstract

To provide a receiver for a disaster prevention monitoring system capable of preventing mischief of switches or the like or unauthorized operation by a third party.SOLUTION: In a receiver for a disaster prevention monitoring system including a housing consisting of a box-shaped body (20) with one surface open and a front panel (10) attached to close an opening of the box-shaped body, an opening portion is provided on the front panel, a pair of wall portions (23A, 23B) that face each other across the opening part are provided on a rear surface side of the front panel, a cover (21) for closing a part of the opening portion is rotatably provided with one side as a fulcrum, guide holes are respectively formed in positions corresponding to an opening side of the cover on the pair of wall portions, and an insertion portion of a cover rotation prevention member having an insertion portion that can be inserted into the guide hole is inserted into the guide hole so as to prevent rotation of the cover, in a state where the front panel closes the opening of the box-shaped main body.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] This invention relates to a receiver used in a disaster prevention monitoring system (including a fire alarm system), such as a fire receiver that receives signals from fire detectors, transmitters, etc. and issues an alarm about a fire, and in particular to a technology that is effective when used in a mechanism for preventing erroneous operation of a cover that covers switches provided on the front panel of the receiver. [Background technology]

[0002] The fire receiver is equipped with an information display that displays the location (area) of an event such as a fire and the details of the event, a speaker that emits an alarm sound, various switches, etc. In addition, the switches and displays that need to be operated in an emergency and the switches and displays that need to be operated during testing and inspection are arranged separately, and the switches and displays that need to be operated during testing and inspection may be covered with a cover to prevent erroneous operation or installed inside a sub-door that can be opened and closed so that the switches cannot be operated under normal circumstances. The switches that need to be operated during testing and inspection also include various mode settings that determine the operation when the fire alarm system is activated.

[0003] Fire receivers generally have the function of receiving fire signals from detectors and notifying the building manager of the building in question of a fire.They are usually installed in special rooms such as disaster prevention centers and management offices, but in smaller buildings and other facilities, they may be installed in places where third parties other than those authorized to operate the receivers may enter. In a fire receiver installed in a place where a third party may enter, there is a risk that a third party may open the cover or sub-door and tamper with or operate the receiver illegally, resulting in a false alarm or a malfunction when needed. Therefore, it is conceivable to add a lock to the cover or sub-door on the receiver's operating section, but if this is done, when firefighters rush to the scene after receiving notice of a fire or when the building manager or other relevant parties authorized to operate the receiver forget the key, it is expected that they will not be able to open the cover or sub-door and operate the switches inside. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 04-114696 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventionally, an invention has been proposed in which a disaster prevention receiver is provided with a covering plate (cover) to prevent the lid (cover) covering the switches from being easily opened or closed, thereby preventing tampering with the switches (Patent Document 1). The technology described in Patent Document 1 is a configuration in which a cover plate that covers the display operation unit and part of the lid of a fire control receiver and a guide rail that supports the cover plate are provided on the display operation unit and the lid, respectively, to prohibit the operation of the display operation unit and the opening of the lid. When this technology is applied, it is effective in preventing tampering, but since the cover plate is fixed with screws, it cannot be removed without using tools.

[0006] Therefore, in the event of an emergency, the screw fixing becomes an obstacle when the building manager or firefighter tries to operate the necessary switch, and the manufacturer has to separately manufacture tamper-proof products with a cover plate and guide rails from normal products that do not have these, which increases costs. Also, while it is possible to attach the cover plate that covers the display operation unit with double-sided tape, doing so requires removing the double-sided tape and cleaning the surface when reusing, which creates the problem of not being able to reuse it easily.

[0007] The present invention has been made with attention to the above-mentioned problems, and its purpose is to provide a receiver for a disaster prevention monitoring system which prevents tampering or unauthorized operation of switches by third parties, while at the same time not interfering with the necessary operations or tasks for building managers and inspection workers. Another object of the present invention is to provide a receiver for a disaster prevention monitoring system which can be easily manufactured into tamper-proof versions and normal versions without tamper-proof versions, thereby suppressing the increase in costs associated with the manufacturing process. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention relates to A disaster prevention monitoring system receiver having a housing including a box-shaped main body with one side open and incorporating a control board capable of detecting the occurrence of an event in response to a signal from a terminal device installed within a monitored area, and a front panel that is attached to close the opening of the box-shaped main body and has an operation display unit that can display the occurrence of a detected event and information corresponding to the event and that can be operated to input, an opening is provided in the front panel, and a pair of walls are provided on the rear side of the front panel so as to face each other and sandwich the opening; a cover for closing a part of the opening is provided so as to be rotatable about one side of the cover; switches are arranged in the portion of the front panel covered by the cover, The pair of walls are each formed with a guide hole at a position corresponding to an open side of the cover, When the front panel closes the opening of the box-shaped main body, a cover rotation preventing member has an insertion portion that can be inserted into the guide hole, and the insertion portion is inserted into the guide hole to prevent rotation of the cover. 、 A movement preventing means capable of preventing the movement of the cover rotation preventing member is provided on the rear side of the front panel, and the movement preventing means is configured to be convertible between a state in which the movement of the cover rotation preventing member is prevented and a release state in which the movement is permitted. This is what was done.

[0009] In the receiver having the above-mentioned configuration, when the front panel (main door) closes the opening of the box-shaped main body, the cover rotation prevention member prevents the cover (sub-door) from rotating, so that it is not possible to open the cover and operate the switches inside. Furthermore, the cover rotation prevention member cannot be removed while the front panel (main door) is closed. It is possible to prevent tampering or unauthorized operation of switches by third parties. In addition, the front panel is open. By converting the means of preventing movement, Remove the cover rotation prevention member. It is possible, and by doing so The cover can be rotated It became like The switches inside can be operated by opening the cover, so this does not pose any obstacle to building managers or inspection workers in carrying out the necessary operations or work.

[0010] Furthermore, since the cover rotation preventing member that prevents the cover from rotating is designed to be easily removable, it is easy to produce tamper-proof products and normal products without the measures, which not only prevents the increase in costs associated with producing different products but also makes it easy to reuse them after restoration. In addition, in a receiver that does not have a cover rotation preventing member, dust and water can be prevented by inserting a grommet or the like into the guide hole for inserting the insertion portion of the cover rotation preventing member, and the guide hole can be made less noticeable, so that the aesthetic appearance is not marred.

[0011] Here, it is preferable that the cover rotation preventing member is formed of an elongated member, and both ends of the elongated member are inserted into the guide holes of the pair of wall portions, respectively. The above Movement prevention means corresponds to one of the guide holes The one of the first and second electrodes is provided so as to be rotatable in a first direction. Prevents the elongated member inserted into the guide hole from moving outward in the axial direction and configured to allow the elongated member inserted into one of the guide holes to move outward in the axial direction by being rotated in a second direction. to. With this configuration, the long member acting as a cover rotation preventing member cannot be moved significantly in the axial direction, making it impossible to remove the long member with the front panel remaining closed, thereby preventing a third party from opening the cover and tampering with or operating the internal switches illicitly.

[0012] Further, preferably, the rear surface of the front panel has a guide hole corresponding to the other guide hole. , this The above-mentioned long member inserted into the guide hole Axial Outer Prevents movement in the opposite direction Movement prevention part Ensure that the following is provided. According to this configuration, since the long member cannot be moved in either axial direction while the front panel is closed, it is possible to prevent a third party from opening the cover and tampering with or operating the switches inside. Move Movement prevention means In the second direction The long member can be removed by rotating it, so this does not pose any obstacle to the building manager or inspection worker in carrying out the necessary operations or work.

[0013] Also, preferably, a first group of switches is arranged in a portion of the front panel that is not covered by the cover, the first group of switches being enabled when the control board detects the occurrence of an event, A second group of switches including switches that are always enabled while the power is on is disposed in a portion of the front panel that is covered by the cover.

[0014] According to the receiver having the above-mentioned configuration, the first switch group arranged in the part not covered by the cover is enabled when the occurrence of an event such as a fire is detected, so that if the receiver is installed in a place where third parties other than those authorized to use the receiver may enter, the device will not react even if a third party tamper with the switches, so it is possible to avoid erroneous notifications or displays. Also, the second switch group that is always enabled while the power is on is arranged inside the cover, so it is possible to prevent third parties from tampering with or illegally operating these switches.

[0015] Here, the second group of switches that are always enabled while the power is on include switches that are operated when testing or inspecting the receiver, switches that are operated to activate specified equipment of the disaster prevention monitoring system when an event occurs, and switches that set the operating mode. If these switches are operated carelessly, there is a risk that the system will give erroneous alarms or displays. However, because they are arranged in areas that are covered, they can be prevented from being operated by third parties, improving the reliability of the device.

[0016] Also, preferably, the front panel is provided with a lock for maintaining the front panel in a closed state, The lock does not require a key and can be opened with a coin or a tool. With this configuration, tampering by third parties can be prevented, while firefighters who rush to the scene after receiving notice of a fire or other relevant personnel who have forgotten their keys can use a coin or tool to open the cover and operate the switch inside, thereby avoiding situations where firefighters, building managers, and other relevant personnel are unable to perform necessary operations. Effect of the Invention

[0017] The receiver for a disaster prevention monitoring system of the present invention can prevent tampering or unauthorized operation of switches by a third party, and can be made to perform necessary operations and work without any hindrance for building managers and inspection workers. In addition, it is easy to manufacture tamper-proof products and normal products without countermeasures, and there is an effect that the increase in costs associated with manufacturing different products can be suppressed. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view showing an embodiment of a fire receiver to which the receiver according to the present invention is effectively applied; [Diagram 2] 1 is a perspective view showing a state in which a sub-door is open in a fire control panel according to an embodiment of the present invention; [Diagram 3] FIG. 2 is a front view showing an example of the configuration of a front panel in the fire control device of the embodiment. [Figure 4] 1A and 1B are perspective views showing an example of the configuration of the back side of the front panel of a fire receiver according to an embodiment of the present invention, with a stopper rod attached to the front panel of the fire receiver; FIG. [Diagram 5] FIG. 1 shows an example of a structure for preventing axial movement of a stopper rod, where (A) is a perspective view showing a state in which a handle serving as a movement prevention means is lowered, and (B) is a perspective view showing a state in which the handle is raised. [Figure 6] 1A is an exploded perspective view showing the state of the handle before assembly, and FIG. 1B is a perspective view showing the state of the handle after assembly, showing a method of assembling the handle to prevent axial movement of the stopper rod. [Figure 7] 11 is an explanatory diagram showing the first half of the procedure for attaching the stopper rod to the front panel of the fire control panel of the embodiment. FIG. [Figure 8] 13A to 13C are explanatory views showing the latter half of the procedure for attaching the stopper rod to the front panel. [Figure 9] 1 is an oblique view showing a state in which an operation display panel is removed from a front panel of a fire control device according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The fire receiver of this embodiment is installed in a corner of a building, receives fire signals from sensors and transmitters installed within the building, and has the function of sounding the local sound system to notify of the occurrence of a fire by sound, as well as alerting the occurrence of a fire by displaying lamps or other indicators on the front panel of the fire receiver.

[0020] As shown in FIG. 1, the fire receiver comprises a metal body 20 in the shape of a box with one side (the front) open, and a metal front panel 10 attached to one side (the right side in the figure) by hinges 21A, 21B so as to be able to open and close, and the front panel 10 and the body 20 form the housing of the receiver. As shown in FIG. 1, an opening 10a is formed in the center of a front panel 10 of the fire control panel of this embodiment, and an operation display panel 10A for various display and input operations is provided in this opening 10a.

[0021] The operation display panel 10A of the fire receiver (P type) of this embodiment is provided with a fire alarm line area display window 12 that displays the line where a fire has been reported or the line where a detector line has been disconnected, and a smoke control line area display window 13 that displays the location where a fire has occurred or the location where a smoke control terminal, etc. has been activated, as shown in Fig. 3. The area display windows 12 and 13 are each composed of a number of lamps that notify the occurrence of a fire or the activation of a smoke control terminal (such as a smoke control damper or smoke control shutter) for each area line, and a display section (display plate) that displays in text the area name or installation location corresponding to each lamp.

[0022] The operation display panel 10A is further provided with a main operation section 11 which displays the operating status of the fire receiver such as the power-on status, fire alert, and transmitter signal input by lighting up various lamps, a speaker 14 which notifies of the occurrence of a fire, etc., an audio operation section 15 which has a push button 15a for stopping the sound of the receiver and a push button 15b for stopping the bell (district sound), an information display section 16 consisting of a dot matrix type VFD (vacuum fluorescent display) or LCD (liquid crystal display device) or the like which displays information such as the operating mode of the receiver and the results of various tests when they are conducted, a display operation section 17 which has a shift button for changing the displayed content, and an information operation section 18 which has an information button 18a and an information lamp 18b for displaying the details of the fire and abnormality of the receiver on the information display section 16 for confirmation. The display operation unit 17 is provided with a forward shift button 17A, a reverse shift button 17B, a return button 17C for returning the operation to the previous step, and a decision button 17D for finalizing the process.

[0023] In addition, at the bottom of the front panel 10 of the fire receiver, there is an internal operation unit 19 which has a battery test switch button 19A which commands the start of a battery test, a fire test switch button 19B which commands the start of a fire test, a test recovery button 19C which commands recovery from a test, a fire recovery button 19D which commands recovery from a fire test, a switch button 19E which stops the smoke control and evacuation interlock in the event of a fire during inspection, a switch button 19F which stops the fire hydrant pump start interlock in the event of inspection, a switch button 19G which stops the emergency broadcast transfer interlock in the event of a fire, a switch button 19H which stops the transfer in the event of a fire (the function of sending a fire signal to other equipment), and a switch button 19I which is operated during inspection or in the event of a fire to activate or restore the desired smoke control and evacuation equipment.

[0024] Furthermore, the front panel 10 is provided with a sub-door 22 made of a resin panel as an operation unit cover so as to cover the front of the internal operation unit 19, and is configured to prevent the switch buttons 19A to 19I inside the sub-door 22 from being easily operated. As shown in Fig. 2, the sub-door 22 is configured so as to be able to open and close back and forth around a hinge provided at the bottom end. The sub-door 22 may be transparent or non-transparent. Although not shown, a control board that receives command inputs from the operation units (11, 17, 18) and drives the display units (11, 16, 18) and the speaker 14 is installed inside the housing of the fire receiver (10, 20). Furthermore, a backup power supply device that supplies power to the control board and the like in the event of a commercial AC power outage is provided inside the housing of the fire receiver.

[0025] The various switches provided in the main operation unit 11, display operation unit 17 and information operation unit 18 are configured to be enabled for operation only when an event occurs by a control board that is provided inside the housing, i.e., inside the front panel 10, and controls the display of each of the above-mentioned display units. Meanwhile, on the inside of the sub-door 22, there are provided switch buttons that are operated during inspection work and testing, and which are operated at any time by the control board, as well as switch buttons that are operated to set the operating mode of the receiver. That is, in the receiver of this embodiment, the switch buttons that will not cause problems if operated tamperingly or fraudulently are provided above the sub-door 22 and exposed on the surface of the front panel 10, while the switch buttons that will cause problems if operated tamperingly or fraudulently are provided on the inside of the sub-door 22. Furthermore, as will be described below, the sub-door 22 is configured so that it cannot be opened or closed unless the front panel 10 is opened.

[0026] 4 to 7 show specific examples of structures for preventing the sub-door 22 from being easily opened or closed. As shown in Fig. 9, a rectangular frame 23 corresponding to the opening 10a is provided on the rear side of the front panel 10, and as shown in Fig. 4(B), guide holes 24A, 24B are formed in both side walls 23A, 23B of this frame 23 at height positions corresponding to the upper side of the sub-door 22, and both ends of one stopper rod 24 are inserted into these guide holes 24A, 24B so that it can be held in a horizontal state. When the front panel 10 is closed, the stopper rod 24 is configured to contact the upper part of the sub-door 22 or to face it with a small gap therebetween, as shown in Fig. 4(A).

[0027] An operation display panel 31 equipped with an operation display board 33 consisting of a printed wiring board on which indicator lamps, push button switches, etc. are mounted is attached to the inside of the frame body 23, and the front of the operation display panel 31 is covered with a resin sheet, such as a membrane sheet, on which marks for push buttons, etc. are printed. In addition, a lock 25 such as a cylinder key is provided on the side of the opening of the front panel 10. When a key is inserted into this lock 25 to unlock it, the front panel 10 can be rotated to open the front of the main body 20, as shown in FIG. 4(B).

[0028] 4 is a product suitable for installation in a place where third parties other than those authorized to use the receiver may enter, and even if a person other than the administrator attempts to open the sub-door 22, the stopper rod 24 prevents the sub-door 22 from rotating, i.e., opening, and therefore the switch buttons 19A-19I disposed on the inside cannot be operated. This makes it possible to prevent mischief or unauthorized operation of the switches by third parties.

[0029] On the other hand, a fire receiver installed in a building's disaster prevention center or central control room does not have a stopper rod 24, as shown in Figures 1 and 2, and grommets 26 are inserted into guide holes 24A, 24B in both side walls 23A, 23B of frame body 23 into which stopper rod 24 is inserted, thereby preventing foreign objects from entering and preventing the aesthetic appearance (design) from being marred. As described above, in this embodiment, when producing a tamper-proof product provided with the stopper rod 24 and a normal product not having the stopper rod 24, it is only necessary to select whether to insert the stopper rod 24 or the grommet 26 into the guide holes 24A, 24B, which makes it easy to produce them and avoids a significant increase in costs.

[0030] Furthermore, the fire receiver of this embodiment is provided with a structure for preventing the stopper rod 24 from coming off. The structure for preventing the stopper rod 24 from coming off will be described below with reference to Figs. 5 and 6 are enlarged views of components that constitute the structure for preventing the stopper rod 24 from coming off.

[0031] As shown in Fig. 5, a hinge base 27 is fixed to the rear surface of the front panel 10 corresponding to one end of the stopper rod 24, and a pin 28 inserted into the hinge base 27 supports a handle 29 so as to be rotatable in the vertical direction. The handle 29 is provided corresponding to a guide hole 24B for inserting the stopper rod formed in the side wall 23B of the frame body 23, and when the handle 29 is rotated upward as shown in Fig. 5(B), the stopper rod 24 can move below the handle 29. When the handle 29 is rotated downward as shown in Fig. 5(A), the side surface of the handle 29 can prevent the movement of the stopper rod 24.

[0032] 6(B), a groove 28a is formed on the outer circumferential surface of the tip of the pin 28, and an E-ring 30 is fitted into this groove 28a to prevent the pin 28 from falling off. Also, as shown in FIG. 4(A), an end plate 32 is provided on the back surface of the front panel 10 corresponding to the other end of the stopper rod 24 to prevent the stopper rod 24 from moving in the opposite direction to the above. As shown in FIG. 5, above handle 29, there are provided lock 25 and lock plate 25A which is rotated by lock 25. When a key (coin, etc.) is inserted into lock 25 and turned, and lock plate 25A is placed in a vertical position, front panel 10 can be opened and closed. When lock plate 25A is placed in a horizontal position as shown in FIG. 6, the tip of lock plate 25A engages with the edge of main body 20, and front panel 10 is placed in a locked state in which it cannot be opened.

[0033] Next, the procedure for attaching the stopper rod 24 to the front panel 10 will be described with reference to FIGS. To attach the stopper rod 24 to the front panel 10, open the front panel 10 and close the sub-door 22. Then, with the handle 29 raised as shown in Fig. 7, one end of the stopper rod 24 is inserted into the guide hole 24B formed in the side wall 23B (handle 29 side) of the frame 23 on the back surface of the front panel 10, and passed under the handle 29.

[0034] Next, when the end of the stopper rod 24 has been inserted about 1 / 3 of the way, the stopper rod 24 is moved in the opposite direction and the other end is inserted into the guide hole 24A formed in the side wall 23A (end plate 32 side) of the frame body 23, and the stopper rod 24 is inserted until it hits the end plate 32. Thereafter, as shown in Fig. 8, the handle 29 on the back surface of the front panel 10 is lowered so that the stopper rod 24 cannot move left or right, and the front panel 10 is closed, completing the installation of the stopper rod 24. To remove the stopper rod 24, the above steps can be reversed.

[0035] As described above, in the fire receiver of this embodiment, a hinge is provided at the lower end of the sub-door 22 to enable it to be opened and closed, and the stopper rod 24 is provided on the rear surface of the front panel 10 at a position corresponding to the upper end, which is the open side, of the sub-door 22, so that when the front panel 10 is closed and the lock 25 is locked, the sub-door 22 cannot be opened. This makes it possible to prevent mischief or fraudulent acts of opening the sub-door 22 and operating the internal switches. In addition, after unlocking lock 25 and opening front panel 10, the sub-door 22 can be opened by lifting handle 29 on the back surface of front panel 10 and moving and removing stopper rod 24, allowing the sub-door 22 to be opened and the internal switches to be operated. This makes it possible to allow switches to be operated by relevant parties such as the building manager who has the key to unlock lock 25, while preventing switch operation by third parties other than those involved.

[0036] It is possible to provide only switches operated by the building manager or inspection workers on the inside of the sub-door 22, but if switches operated by firefighters are provided on the inside of the sub-door 22, a coin lock can be used as the lock 25, so that firefighters and other relevant parties who rush to the scene after receiving notice of a fire can use a coin or tools to open the front panel 10, lift the handle 29, remove the stopper rod 24, open the sub-door 22, and operate the switches. In addition, fire receivers to be installed in special rooms such as disaster prevention centers and control rooms can be provided with a front panel with a keyless coin lock (without a stopper rod), while fire receivers to be installed in places where third parties may enter can be provided with a front panel with a lock that requires a key and a stopper rod, allowing the products to be produced according to need.

[0037] The invention made by the inventor has been specifically described above based on the embodiment, but the present invention is not limited to the above embodiment. For example, in the above embodiment, a rod-shaped member is used as the stopper rod 24, but a long plate-shaped member may be used as long as it is a rigid member. Also, in the above embodiment, the child door 22 is provided on the front side of the front panel (parent door) 10, but it may be provided on the main body 20 side. Even in this case, by providing the stopper rod 24 on the front panel 10, it is possible to prevent the child door 22 from opening.

[0038] Furthermore, in the above embodiment, the sub-door 22 is provided so as to be rotatable about the lower side as a fulcrum, but it may be provided so as to be rotatable about the upper side or either the left or right side as a fulcrum. In addition, in the above explanation, the present invention has been described using an example in which it is applied to a P-type fire receiver, but the present invention is not limited to P-type fire receivers and can be applied to R-type fire receivers and other receivers that can form a monitoring system. [Explanation of symbols]

[0039] 10 Front panel (chassis) 11 Main control section 12 Area display window for fire alarm line 13. Area indicator window for smoke control lines 14 Speaker 15 Sound control section 16 Information display section (display device) 17 Display operation section 18 Information operation section 19 Internal control section 20 Main unit (chassis) 21 Sub-door (cover) 23 Frame 24 Stopper rod (long member) 25 tablets 26 Grommet 27 Hinge base 29 Handle (first movement prevention means) 32 End plate (second movement prevention means)

Claims

1. A receiver for a disaster prevention monitoring system, comprising a housing including a box-shaped main body with one side open and incorporating a control board capable of detecting the occurrence of an event in response to a signal from a terminal device installed within a monitored area, and a front panel that is attached to close the opening of the box-shaped main body and has an operation display unit capable of displaying the occurrence of a detected event and information corresponding to the event and that allows input operations, an opening is provided in the front panel, and a pair of walls are provided on the rear side of the front panel so as to face each other and sandwich the opening; a cover for closing a part of the opening is provided so as to be rotatable about one side of the cover; switches are arranged in the portion of the front panel covered by the cover, The pair of walls are each formed with a guide hole at a position corresponding to an open side of the cover, a cover rotation preventing member having an insertion portion insertable into the guide hole, the insertion portion being inserted into the guide hole to prevent rotation of the cover when the front panel closes the opening of the box-shaped main body; A receiver for a disaster prevention monitoring system, characterized in that a movement preventing means capable of preventing movement of the cover rotation preventing member is provided on the back side of the front panel, and the movement preventing means is configured to be convertible between a state that prevents movement of the cover rotation preventing member and a released state that allows movement.

2. The cover rotation preventing member is formed of an elongated member, and both ends of the elongated member are inserted into the guide holes of the pair of wall portions, The receiver for a disaster prevention monitoring system as described in claim 1, characterized in that the movement preventing means is rotatably provided in correspondence with one of the guide holes, and is configured to prevent axial outward movement of the long member inserted into one of the guide holes when rotated in a first direction, and to allow axial outward movement of the long member inserted into one of the guide holes when rotated in a second direction.

3. A receiver for a disaster prevention monitoring system as described in claim 2, characterized in that a movement preventing portion is provided on the back surface of the front panel corresponding to the other guide hole, which prevents the elongated member inserted into the guide hole from moving in the direction opposite to the axial outward direction.

4. a first switch group is disposed in a portion of the front panel that is not covered by the cover, the first switch group being enabled when the control board detects the occurrence of an event; A receiver for a disaster prevention monitoring system as described in any one of claims 1 to 3, characterized in that a second group of switches including switches that are always enabled while the power is on are arranged in the portion of the front panel covered by the cover.

5. A receiver for a disaster prevention monitoring system as described in claim 4, characterized in that the switches that are always enabled while the power is on are a switch that is operated when the receiver is tested or inspected, a switch that is operated to activate specified equipment of the disaster prevention monitoring system when an event occurs, and a switch that sets the operating mode.

6. The front panel is provided with a lock for maintaining the front panel in a closed state, 6. The receiver for a disaster prevention monitoring system according to claim 1, wherein the lock does not require a key and can be opened with a coin or a tool.

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