Fire report facility

Abstract

To provide a fire report facility making it possible to upgrade work efficiency in setting a district name sheet.SOLUTION: A fire receiver 100 includes a display unit (district display unit 15) that displays an abnormality occurrence place. The display unit (district display unit 15) includes a body 20, a district name sheet 90 that describes a district name and is disposed on the surface of the body 20, a district window cover 30 that is attached to the body 20 to be superposed on the district name sheet 90 and exhibits translucency, and a top cover 50 attached to the body 20 to be superposed on the district window cover 30. The top cover 50 includes a transmissive part 51 exhibiting translucency and overlapping a district name, and an interceptive part 52 that is disposed around the transmissive part 51 and exhibits a lower transmittance than the transmissive part 51 does. A length in a sideways direction of the transmissive part 51 is smaller than a length in the sideways direction of the district name sheet 90.SELECTED DRAWING: Figure 18

Description

[Technical field]

[0001] The present disclosure relates to a fire alarm system. [Background technology]

[0002] There is known a fire alarm system that receives information from a plurality of fire detectors and a plurality of fire transmitters installed in each alert area. The fire alarm system operates based on the information received from the fire detectors and the fire transmitters. The fire alarm system includes a display unit having a plurality of area windows. Each area window displays abnormalities for each alert area. For example, Patent Documents 1 and 2 disclose an example of a display panel having a plurality of area windows. As disclosed in Patent Documents 1 and 2, a piece of paper (area name paper) on which the name of the monitored area is written is attached to each area window. The area name paper is fixed to the area window by a transparent cover. The area name paper and the transparent cover are arranged in a one-to-one correspondence. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-180077 [Patent Document 2] Registered Utility Model No. 3133849 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when installing or replacing district name papers, the number of operations required to attach district name papers and transparent covers increases in proportion to the number of district windows. For this reason, the installation of district name papers can be time-consuming.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a fire alarm system that can improve work efficiency when installing district name papers. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the fire alarm system of the present disclosure is a fire alarm system equipped with a display unit that displays the location of an abnormality, the display unit comprising: a main body; a district name paper on which the district name is written and which is placed on the surface of the main body; a district window cover which is attached to the main body so as to overlap the district name paper and which has translucency; and a top cover which is attached to the main body so as to overlap the district window cover, the top cover comprising a translucent portion which is translucent and overlaps the district name, and a shielding portion which is placed around the transparent portion and has a lower transmittance than the transparent portion, and the horizontal length of the transparent portion is smaller than the horizontal length of the district name paper.

[0007] This allows the top cover to hide both lateral ends of the district name paper, and therefore the fire alarm system of the present disclosure can make lateral displacement of the district name paper less noticeable.

[0008] In a preferred embodiment of the above fire alarm system, the vertical length of the transmission portion is smaller than the vertical length of the district window cover.

[0009] This allows the top cover to hide both vertical ends of the district window covers, and therefore the fire alarm system of the present disclosure can make gaps between the district window covers less noticeable.

[0010] As a desirable aspect of the above-mentioned fire alarm system, the main body is provided with a retaining claw that holds the district window cover and a fitting portion that holds both lateral ends of the top cover, and the retaining claw is provided with a chamfer at the lateral end.

[0011] This makes it difficult for the top cover to get caught on the retaining claws when the top cover is slid laterally to fit into the fitting portion, thus making it easier to attach the top cover in the fire alarm system of the present disclosure.

[0012] Another aspect of the fire alarm system of the present disclosure is a fire alarm system equipped with a display unit that displays the location of an abnormality, the display unit comprising a main body, a district name paper on which the district name is written and which is placed on the surface of the main body, and a district window cover that is attached to the main body so as to overlap the district name paper and has translucency, the main body comprising a first retaining claw that holds the district window cover, and a second retaining claw that holds the district window cover at a position laterally different from the first retaining claw relative to the district name paper, the first retaining claw having a chamfer on the end facing the second retaining claw, and the second retaining claw having a chamfer on the end opposite the end facing the first retaining claw.

[0013] This allows the district window cover to be held at multiple locations in the horizontal direction. In this case, there is a possibility that the district window cover will get caught on the first retention claw or the second retention claw when the district window cover is slid horizontally. In contrast, by providing a chamfer on the first retention claw and a chamfer on the second retention claw, the district window cover will be more likely to climb over the first retention claw or the second retention claw. Therefore, the fire alarm system of the present disclosure can hold the district window cover at multiple locations in the horizontal direction and reduce the possibility that the district window cover will get caught on the first retention claw or the second retention claw.

[0014] As a preferred embodiment of the above fire alarm system, the second retaining claw has a chamfered corner facing the district name paper.

[0015] This makes it easier to insert the district window cover inside the second retaining claw. Also, in the second retaining claw, the two chamfers (the chamfer on the end opposite to the end facing the first retaining claw and the chamfer on the corner facing the district name paper) are less likely to overlap horizontally. Therefore, the fire alarm system of the present disclosure can prevent the second retaining claw from becoming thicker in the depth direction compared to when the two retaining claws overlap in the depth direction. Effect of the Invention

[0016] The fire alarm system of the present disclosure can improve work efficiency when installing district name papers. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a front view of the fire receiver of the present embodiment. [Diagram 2] FIG. 2 is a left side view of the fire receiver of the present embodiment. [Diagram 3] FIG. 3 is a perspective view of the roller and the receiving member of the housing of the present embodiment. [Figure 4] FIG. 4 is a front view of the district window panel of this embodiment. [Diagram 5] FIG. 5 is a front view of the district window panel of this embodiment with the top cover removed. [Figure 6] FIG. 6 is a front view of the district window panel of this embodiment with the top cover and the district window cover removed. [Figure 7] FIG. 7 is a perspective view of the main body of the district window panel of this embodiment. [Figure 8] 8 is an enlarged perspective view of the periphery of the first holding claw and the second holding claw in FIG. [Figure 9] FIG. 9 is a perspective view of the first holding claw of the present embodiment. [Figure 10] FIG. 10 is a perspective view of the second holding claw of the present embodiment. [Figure 11] FIG. 11 is a front view of the district window cover of this embodiment. [Figure 12] FIG. 12 is an enlarged view of the district window cover of this embodiment. [Figure 13] FIG. 13 is an enlarged view of the district window cover of this embodiment attached to the main body. [Figure 14] FIG. 14 is a front view showing an example of a divided state of the district window cover of this embodiment. [Figure 15] FIG. 15 is a front view of the top cover of this embodiment. [Figure 16]FIG. 16 is a schematic diagram showing the process of attaching the district name paper of this embodiment to the main body. [Figure 17] FIG. 17 is a schematic diagram showing the process of attaching the district name paper of this embodiment to the main body. [Figure 18] FIG. 18 is a schematic diagram showing the process of attaching the district name paper of this embodiment to the main body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The present invention will be described in detail below with reference to the drawings. Note that the present invention is not limited to the following modes for carrying out the invention (hereinafter, referred to as embodiments). Furthermore, the components in the following embodiments include those that a person skilled in the art can easily imagine, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the components disclosed in the following embodiments can be appropriately combined.

[0019] (Embodiment) In this embodiment, the fire alarm system is described as a fire receiver. FIG. 1 is a front view of the fire receiver of this embodiment. The fire receiver 100 of this embodiment is a so-called P-type receiver in which a sensor line is drawn for each alert area and a fire occurrence location is identified for each alert area. The fire receiver 100 of this embodiment receives signals from a plurality of fire detectors and a plurality of fire transmitters installed in each alert area. The fire receiver 100 operates based on the signals received from the fire detectors and the fire transmitters. Specifically, the fire receiver 100 displays information identifying the alert area in which a fire is detected and sounds an alarm based on the detection of a fire by the fire detector or the short circuit of the sensor line due to the operation of the fire transmitter. The fire receiver 100 is connected to a plurality of fire detectors and a plurality of fire transmitters installed in one alert area via a common sensor line. As shown in FIG. 1, the fire receiver 100 includes a housing 10 and a display panel 14.

[0020] Fig. 2 is a left side view of the fire receiver of this embodiment. Fig. 3 is a perspective view of the roller and receiving member of the housing of this embodiment. As shown in Figs. 2 and 3, the housing 10 includes a main body 11, a door 13, a receiving member 101, a roller support member 103, a roller 105, and a lock 107.

[0021] In the following description, an XYZ Cartesian coordinate system is used. The X axis is parallel to the left-right direction (horizontal direction) when the housing 10 is viewed from the front. The Y axis is parallel to the up-down direction (vertical direction) when the housing 10 is viewed from the front. The Z axis is a direction (depth direction) perpendicular to both the horizontal and vertical directions. In the X direction, the right side when the housing 10 is viewed from the front is the +X direction, and the left side is the -X direction. In the Y direction, the top side when the housing 10 is viewed from the front is the +Y direction, and the bottom side is the -Y direction. In the Z direction, the direction from the door 13 toward the main body 11 is the +Z direction, and the direction from the main body 11 toward the door 13 is the -Z direction.

[0022] The main body 11 is substantially rectangular. The main body 11 includes a receiving unit and the like therein for receiving signals from a fire detector and a fire transmitter. The door 13 is arranged to cover an opening of the main body 11. The door 13 can be opened and closed relative to the main body 11. The door 13 is supported by the main body 11 via a hinge. The hinge is arranged at the end of the main body 11 and the door 13 in the +X direction. The door 13 can rotate around the rotation axis of the hinge (a rotation axis parallel to the Y direction).

[0023] As shown in FIG. 3, the receiving member 101 is provided on the inner edge of the main body 11. The receiving member 101 is disposed at the end (-X direction end) of the main body 11 opposite to the hinge supporting the door 13. The receiving member 101 is disposed at approximately the center in the Y direction of the -X direction end of the main body 11. The receiving member 101 includes a side plate 101a, a front plate 101b, an upper plate 101c, and an inclined plate 101d. The side plate 101a is a plate-shaped member whose thickness direction is parallel to the X direction. The side plate 101a is fixed to the main body 11. The front plate 101b is a plate-shaped member whose thickness direction is parallel to the Z direction. The front plate 101b is connected to the side plate 101a. The upper plate 101c is a plate-shaped member whose thickness direction is parallel to the Y direction. The upper plate 101c is connected to the front plate 101b. The inclined plate 101d is a plate-shaped member that extends in the +X direction and the -Z direction from the front plate 101b. The inclined plate 101d is connected to the front plate 101b.

[0024] The roller support member 103 is provided on the inner edge of the door 13. The roller support member 103 is disposed at the end (-X direction end) of the door 13 opposite the hinge that supports the door 13. The roller support member 103 is disposed approximately in the center in the Y direction of the -X direction end of the door 13. The roller support member 103 is, for example, a plate-shaped member whose thickness direction is parallel to the X direction.

[0025] The roller 105 is attached to the roller support member 103. The roller 105 can rotate around an axis parallel to the X direction. When the door 13 is open, the end of the door 13 in the -X direction moves (shifts) in the -Y direction due to its own weight, compared to when the door 13 is closed. When the door 13 is open, a part of the roller 105 is located in the -Y direction from the upper plate 101c of the receiving member 101. When the door 13 is closed, the roller 105 rides up onto the upper plate 101c. This causes the end of the door 13 in the -X direction to be lifted in the +Y direction. Therefore, when the door 13 is closed, relative positional shifts between the main body 11 and the door 13 are suppressed.

[0026] The lock 107 is provided on the door 13. The lock 107 is a so-called coin lock that can be operated, for example, with a screwdriver or a coin. The lock 107 has a plate-shaped movable plate whose thickness direction is parallel to the Z direction. The movable plate can rotate around an axis parallel to the Z direction. When the movable plate is rotated with the door 13 closed, the movable plate is inserted in the +Z direction of the front plate 101b of the receiving member 101. Therefore, the movable plate is caught on the front plate 101b, thereby restricting the opening and closing of the door 13. That is, the door 13 is locked by operating the lock 107. In this way, the receiving member 101 serves both as a mating member of the roller 105 and a mating member of the lock 107.

[0027] As shown in FIG. 1, the display panel 14 displays various information according to signals received from the fire detector and the fire transmitter. The display panel 14 includes a district display unit 15, a type display unit 16, and an operation display unit 17. The district display unit 15 indicates in which district an abnormality has occurred based on signals received from the fire detector and the fire transmitter. The district display unit 15 includes at least one district window panel 19. In this embodiment, the district display unit 15 includes two district window panels 19. The district window panel 19 includes a plurality of district windows 191 and a plurality of indicator lights 193. The district windows 191 and the indicator lights 193 are in one-to-one correspondence. In this embodiment, one district window panel 19 is provided with 20 district windows 191 and 20 indicator lights 193. When a signal is received from a fire detector and a fire transmitter, the indicator light 193 corresponding to the district window 191 corresponding to the district in which the abnormality has occurred is turned on. The type display unit 16 displays the type of abnormality that has occurred in the area. The type display unit 16 is disposed below the area display unit 15. The operation display unit 17 displays the operation to be performed depending on the situation. The operation display unit 17 is disposed below the type display unit 16.

[0028] FIG. 4 is a front view of the district window panel of this embodiment. FIG. 5 is a front view of the district window panel of this embodiment with the top cover removed. FIG. 6 is a front view of the district window panel of this embodiment with the top cover and the district window cover removed. FIG. 7 is a perspective view of the main body of the district window panel of this embodiment. FIG. 8 is an enlarged perspective view of the periphery of the first retention claw and the second retention claw of FIG. 7. FIG. 9 is a perspective view of the first retention claw of this embodiment. FIG. 10 is a perspective view of the second retention claw of this embodiment. FIG. 11 is a front view of the district window cover of this embodiment. FIG. 12 is an enlarged view of the district window cover of this embodiment. FIG. 13 is an enlarged view of the district window cover of this embodiment attached to the main body. FIG. 14 is a front view showing an example of the district window cover of this embodiment in a divided state. FIG. 15 is a front view of the top cover of this embodiment.

[0029] As shown in Figures 4 to 6, the district window panel 19 includes a main body 20, a plurality of district name papers 90 (see Figure 6), a plurality of district window covers 30 (see Figure 5), and a top cover 50 (see Figure 4).

[0030] The main body 20 is a member that supports the district name paper 90, the district window cover 30, and the top cover 50. The main body 20 is attached to the door 13. The material of the main body 20 is, for example, ABS (Acrylonitrile Butadiene Styrene) resin. As shown in Fig. 6, the main body 20 includes a base 21, a plurality of recesses 22, a plurality of first retaining claws 23, a plurality of second retaining claws 24, a plurality of round holes 25, a first fitting portion 26, a second fitting portion 27, a plurality of upper claws 28, and a plurality of lower claws 29.

[0031] As shown in Fig. 6, the base 21 is formed in a plate shape. The base 21 is rectangular when viewed in the Z direction. The multiple recesses 22 are depressions provided on the surface of the base 21 in the -Z direction. It is preferable that the depth D22 of the recesses 22 (length in the Z direction, see Fig. 8) is 0.4 mm or more. The multiple recesses 22 are arranged side by side in the X direction. Five recesses 22 are provided on one base 21.

[0032] The first retaining claw 23 is a member that retains the district window cover 30. The first retaining claw 23 is disposed at a position corresponding to each of the multiple district names arranged in the X direction. As shown in FIG. 9, the first retaining claw 23 is a protrusion that protrudes from the surface of the base 21 in the -Z direction. The first retaining claw 23 is formed in a substantially L-shape when viewed from the Y direction. The first retaining claw 23 opens toward the +X direction. The first retaining claw 23 has a chamfer 231. The chamfer 231 is provided at a corner that is an end in the +X direction and an end in the -Z direction. It can also be said that the chamfer 231 is provided at a corner of an end in the opposite direction to the sliding direction of the district window cover 30 (or the top cover 50) when the district window cover 30 (or the top cover 50) is attached to the main body 20.

[0033] The second holding claw 24 is a member that holds the district window cover 30 at a position different from the first holding claw 23 in the X direction. The second holding claw 24 is disposed at a position corresponding to each of the multiple district names arranged in the X direction. The second holding claw 24 is disposed on the opposite side of the first holding claw 23, sandwiching the district name paper 90. As shown in FIG. 10, the second holding claw 24 is a protrusion that protrudes from the surface of the base 21 in the -Z direction. The second holding claw 24 is formed in a substantially L-shape when viewed from the Y direction. The second holding claw 24 opens toward the -X direction. The second holding claw 24 includes a chamfer 241 and a chamfer 243. The chamfer 241 is provided at a corner that is an end in the +X direction and an end in the -Z direction. It can also be said that the chamfer 241 is provided at a corner of an end in the opposite direction to the sliding direction of the district window cover 30 (or the top cover 50) when the district window cover 30 (or the top cover 50) is attached to the main body 20. The chamfer 243 is provided at a corner that is an end in the -X direction and an end in the +Z direction. It can also be said that the chamfer 243 is provided at a corner that faces the district name paper 90.

[0034] The round holes 25 are holes in which lamps are placed. The round holes 25 are placed adjacent to each district name written on the district name paper 90. There is a one-to-one correspondence between the round holes 25 and the district names. The round holes 25 are placed in the -X direction of the corresponding district name. Multiple round holes 25 are placed at equal intervals in the X and Y directions.

[0035] The first fitting portion 26 is a hole provided in the base 21 for holding the top cover 50. As shown in Fig. 6, in this embodiment, one first fitting portion 26 is provided in one base 21. The first fitting portion 26 is disposed in the base 21 in the -X direction from the multiple recesses 22 and at a midpoint in the Y direction. The first fitting portion 26 holds the end portion of the top cover 50 in the -X direction.

[0036] The second fitting portion 27 is a hole provided in the base 21 for holding the top cover 50. As shown in FIG. 6, in this embodiment, one base 21 is provided with two second fitting portions 27. The second fitting portions 27 are disposed in the +X direction from the multiple recesses 22 in the base 21. The two second fitting portions 27 are disposed side by side along the Y direction. The positions of the two second fitting portions 27 in the Y direction are different from the position of the first fitting portion 26 in the Y direction. The second fitting portions 27 hold the end portion of the top cover 50 in the -X direction.

[0037] The multiple upper claws 28 are members that hold the top cover 50. The upper claws 28 are protrusions that protrude from the surface of the base 21 in the -Z direction. The upper claws 28 are formed in a substantially L-shape when viewed from the X direction. The upper claws 28 are disposed in the base 21 in the +Y direction relative to the multiple recesses 22. The upper claws 28 are open toward the -Y direction.

[0038] The multiple lower claws 29 are members that hold the top cover 50. The lower claws 29 are protrusions that protrude from the surface of the base 21 in the -Z direction. The lower claws 29 are formed in a substantially L-shape when viewed from the X direction. The lower claws 29 are disposed in the base 21 in the -Y direction relative to the multiple recesses 22. The lower claws 29 are open toward the +Y direction.

[0039] As shown in FIG. 6, the district name paper 90 is a sheet on which multiple district names are written in a line in the Y direction. In this embodiment, four district names are written on one district name paper 90. On the district name paper 90, the district names are written along the X direction. The district names are printed by a printer using a specified program. For example, 60 district names are printed on an A4 sheet of paper. One district name paper 90 is produced by cutting the A4 sheet on which the district names are printed to a specified size.

[0040] The district name paper 90 is placed on the surface of the main body 20. More specifically, the district name paper 90 is placed in the recess 22 of the main body 20. The thickness of the district name paper 90 is smaller than the depth D22 (see Figure 8) of the recess 22. The entire district name paper 90 is stored in the recess 22. In the district window panel 19, multiple district name papers 90 are arranged side by side in the X direction. There is a one-to-one correspondence between the district name papers 90 and the recesses 22. Five district name papers 90 are attached to one main body 20. The five district name papers 90 are arranged at equal intervals in the X direction.

[0041] As shown in FIG. 5, the district window cover 30 is attached to the main body 20 so as to overlap the district name paper 90. The -X direction end of the district window cover 30 is held by the first retaining claw 23. The +X direction end of the district window cover 30 is held by the second retaining claw 24. The district window cover 30 is detachable from the main body 20. The district window cover 30 is translucent. Therefore, the district name written on the district name paper 90 is visible through the district window cover 30. The material of the district window cover 30 is, for example, polyethylene terephthalate (PET), polyvinyl chloride, or polycarbonate (PC).

[0042] The district window cover 30 overlaps multiple district name papers 90 lined up in the X direction. In this embodiment, the district window cover 30 overlaps all district name papers 90 (five district name papers 90) in the same row. In the district window panel 19, multiple district window covers 30 are arranged side by side in the Y direction. Four district window covers 30 are attached to one main body 20. The four district window covers 30 are arranged at equal intervals in the Y direction.

[0043] 5, the multiple district window covers 30 include an end cover 49. The end cover 49 is a district window cover 30 that overlaps a district name that is located at the end in the +Y direction of one district name sheet 90. In one district window panel 19, the end cover 49 overlaps five district names that are located at the end in the +Y direction of the 20 district names.

[0044] 5, the plurality of district window covers 30 include a first cover 41 and a second cover 42. The first cover 41 is a district window cover 30 that overlaps and is colored with a district name indicating the location of the fire. In this embodiment, the first cover 41 is, for example, uncolored and transparent.

[0045] The second cover 42 is colored so as to overlap with the district name indicating the location where an abnormality other than a fire has occurred and to be a color different from that of the first cover 41. In this embodiment, the second cover 42 is, for example, colored and has translucency. The location where an abnormality other than a fire has occurred is a location where a smoke control and exhaust system has been activated, a location where a gas leak has occurred, a location where an alarm system has been activated, etc. When the second cover 42 overlaps with the district name indicating the location where a smoke control and exhaust system has been activated, the second cover 42 is colored, for example, yellow. When the second cover 42 overlaps with the district name indicating the location where a gas leak has occurred, the second cover 42 is colored, for example, blue. When the second cover 42 overlaps with the district name indicating the location where an alarm system has been activated (the location of the equipment to which the report signal was transmitted from the fire receiver 100), the second cover 42 is colored, for example, orange.

[0046] As shown in FIG. 11, the district window cover 30 includes a plurality of covering parts 31, a plurality of connecting parts 33, an end protrusion 35, an end recess 37, a plurality of intermediate recesses 38, and a plurality of perforations 39. The covering part 31 is a part that overlaps with the district name paper 90. The district window cover 30 includes five covering parts 31. The connecting part 33 connects two covering parts 31. The width of the connecting part 33 in the Y direction is smaller than the width of the covering part 31 in the Y direction. The end protrusion 35 is a protrusion that protrudes in the -X direction from the covering part 31 at the end in the -X direction. The end protrusion 35 fits into the first retaining claw 23 of the main body 20. The end recess 37 is a notch provided at the end in the +X direction of the covering part 31 at the end in the +X direction. The end recess 37 opens toward the +X direction. The intermediate recess 38 is a hole disposed at the end in the +X direction of the covering part 31. The second retaining claw 24 fits into the end recess 37 and the intermediate recess 38. In the following description, when there is no need to distinguish between the end recess 37 and the intermediate recess 38, the end recess 37 and the intermediate recess 38 will be referred to as claw fitting recesses.

[0047] As shown in FIG. 12, the claw fitting recess is provided with a fitting confirmation display 36. The fitting confirmation display 36 is a print provided around the claw fitting recess that can be distinguished from other parts. The fitting confirmation display 36 is exposed when the second retention claw 24 is not fitted in the claw fitting recess. As shown in FIG. 13, when the second retention claw 24 is fitted in the claw fitting recess, at least a part of the fitting confirmation display 36 corresponding to the claw fitting recess is not exposed. Even when the second retention claw 24 is fitted in the claw fitting recess, it is preferable that at least a part of the fitting confirmation display 36 is exposed in order to make it easier to check the fitting confirmation display 36.

[0048] The perforation 39 is a straight line extending in the Y direction. The perforation 39 is arranged at the end in the +X direction in the covering portion 31 other than the covering portion 31 at the end in the X direction. The district window cover 30 has three perforations 39. The perforations 39 are arranged on both sides in the Y direction of the intermediate recess 38. As shown in FIG. 14, the district window cover 30 can be divided in the X direction by the perforations 39. A part of the divided district window cover 30 can be attached to the main body 20. Specifically, the district window cover 30 is divided into a first district window cover piece 301 and a second district window cover piece 302 by the perforations 39. The first district window cover piece 301 can be attached to the main body 20 at any position by a pair of the first retaining claw 23 and the second retaining claw 24. For example, the first region window cover piece 301 can be attached to the first retaining claw 23 located at the most -X direction side and the second retaining claw 24 located at the middle in the X direction, or it can be attached to the first retaining claw 23 located at the middle in the X direction and the second retaining claw 24 located at the most +X direction side. The second region window cover piece 302 is discarded.

[0049] As shown in FIG. 15, the top cover 50 is attached to the main body 20 so as to overlap the district window covers 30. The top cover 50 overlaps all district window covers 30 (four district window covers 30) attached to one main body 20. The -X direction end of the top cover 50 is held by the first fitting portion 26. The +X direction end of the top cover 50 is held by the second fitting portion 27. The top cover 50 is detachable from the main body 20. The material of the top cover 50 is, for example, polycarbonate (PC).

[0050] The top cover 50 includes a plurality of transparent portions 51, a lamp window 55, a shielding portion 53, a first protrusion 56, and a second protrusion 57. The transparent portion 51 has translucency and overlaps the district name. Therefore, the district name written on the district name paper 90 is visible through the district window cover 30 and the transparent portion 51. For example, the transparent portion 51 is uncolored and transparent. The length W51 of the transparent portion 51 in the X direction is smaller than the length W90 of the district name paper 90 in the X direction (see FIG. 6). The length H51 of the transparent portion 51 in the Y direction is smaller than the length H30 of the district window cover 30 in the Y direction (see FIG. 11). The plurality of transparent portions 51 are arranged at equal intervals in the X direction and the Y direction. The lamp window 55 has translucency and overlaps the lamp arranged in the round hole 25 of the main body 20. For example, the lamp window 55 is uncolored and transparent. The lamp windows 55 are arranged at equal intervals in the X and Y directions.

[0051] The shielding portion 53 has a lower transmittance than the transparent portion 51 and the lamp window 55. The portions of the main body 20, the district name paper 90, and the district window cover 30 that overlap the shielding portion 53 are difficult to see or cannot be seen. The shielding portion 53 is disposed at least between adjacent transparent portions 51. The shielding portion 53 is disposed around the transparent portion 51 and around the lamp window 55. In this embodiment, all portions except the transparent portion 51 and the lamp window 55 are the shielding portion 53.

[0052] The first protrusion 56 is a protrusion that protrudes from the -X direction end of the shielding portion 53. The first protrusion 56 fits into the first fitting portion 26 of the main body 20. The second protrusion 57 is a protrusion that protrudes from the +X direction end of the shielding portion 53. The second protrusion 57 fits into the second fitting portion 27 of the main body 20. In addition, the +Y direction end of the shielding portion 53 is caught by the upper claw 28 of the main body 20. The -Y direction end of the shielding portion 53 is caught by the lower claw 29 of the main body 20. This prevents the top cover 50 from falling off the main body 20.

[0053] 16 to 18 are schematic diagrams showing the work process when the district name paper of this embodiment is attached to the main body. In FIG. 16 to FIG. 18, the district window cover 30 is hatched for ease of viewing. When the district name paper 90 is attached to the main body, as shown in FIG. 16, the district window cover 30 except the end cover 49 is first attached to the main body 20. That is, of the four district window covers 30, the three district window covers 30 in the -Y direction are attached to the main body 20. The district window cover 30 is slid in the -X direction. The end protrusion 35 is inserted into the back of the first retaining claw 23 at the end in the -X direction. The multiple second retaining claws 24 fit into the intermediate recesses 38. After that, the district window cover 30 is slightly slid in the +X direction. As a result, the district window cover 30 is caught by both the first retaining claw 23 and the second retaining claw 24. With the three district window covers 30 attached, the district name paper 90 is inserted between the main body 20 and the district window covers 30. The district name paper 90 is stored in the recess 22 of the main body 20.

[0054] Next, as shown in Fig. 17, the end cover 49 is attached to the main body 20. The end cover 49 is attached to the main body 20 by sliding it in the -X direction in the same manner as the other district window covers 30. This brings all of the district names written on the district name paper 90 into a state where they are overlapped with the district window cover 30. In addition, the four district window covers 30 prevent the district name paper 90 from falling off.

[0055] Next, as shown in FIG. 18, the top cover 50 is attached to the main body 20. The top cover 50 is slid in the -X direction. The top cover 50 is slid in the -X direction at a position in the +Z direction from the upper claws 28 and the lower claws 29 of the main body 20. As a result, the top cover 50 is caught by the upper claws 28 and the lower claws 29. The first protrusion 56 is inserted into the first fitting portion 26. Thereafter, the top cover 50 is flexed to move the second protrusion 57 in the -X direction. The second protrusion 57 is inserted into the second fitting portion 27. This results in the state shown in FIG. 4.

[0056] The fire receiver 100 does not necessarily have to include a display panel 14 as shown in FIG. 1. The type of the fire receiver 100 is not particularly limited. The material of each component of the fire receiver 100 does not necessarily have to be the above-mentioned. For example, the material of the main body 20 is not limited to ABS resin, and may be other plastics. The material of the district window cover 30 is not limited to polyethylene terephthalate (PET), polyvinyl chloride, or polycarbonate (PC), and may be other plastics having translucency. The material of the top cover 50 is not limited to polycarbonate (PC), and may be other plastics having translucency. With respect to the district window cover 30, the first cover 41 may be colored, and the second cover 42 may be uncolored.

[0057] The fire alarm system is not limited to the fire receiver. A display panel that is connected to the fire receiver and displays the alert area where a fire has occurred based on a signal from the fire receiver is also included in the fire alarm system.

[0058] The district names do not necessarily have to be lined up in four in the Y direction in one district window panel 19. It is sufficient that at least two district names are lined up in the Y direction. Furthermore, the district names do not necessarily have to be lined up in five in the X direction in one district window panel 19. The number of district names lined up in the X direction may be one or more. Furthermore, the number of district window panels 19 provided in one district display unit 15 does not necessarily have to be two, and may be one, or three or more.

[0059] As described above, the fire receiver 100 of this embodiment is a fire receiver equipped with a display unit (district display unit 15) that displays the location of an abnormality. The display unit includes a main body 20, a district name sheet 90 on which multiple district names are written vertically (Y direction) and that is disposed on the surface of the main body 20, and multiple translucent district window covers 30 that are attached to the main body 20 so as to overlap the district name sheet 90.

[0060] This makes it possible to arrange multiple district names at once on one district name paper 90. This reduces the number of times the district name paper 90 needs to be attached. Also, by writing multiple district names side by side in the vertical direction (Y direction), the district name paper 90 becomes larger. This prevents unintended movement of the district name paper 90 due to static electricity when attaching the district window cover 30 to the main body 20. Therefore, the fire receiver 100 of this embodiment can improve work efficiency when installing the district name paper 90.

[0061] In the fire receiver 100 of this embodiment, the district name is written along the horizontal direction (X direction).

[0062] This reduces the difference between the horizontal (X-direction) length and the vertical (Y-direction) length of the district name paper 90. Therefore, the fire receiver 100 of this embodiment can reduce the possibility that the district name paper 90 will bend when the district name paper 90 is installed.

[0063] In the fire receiver 100 of this embodiment, the multiple district window covers 30 are equipped with end covers 49 that overlap the district name placed at the end of the vertical direction (Y direction) of one district name paper 90 and are detachable from the main body 20.

[0064] This makes it possible to insert the district name paper 90 into the gap between the other district window cover 30 and the main body 20 with the end cover 49 removed. The fire receiver 100 of this embodiment makes it easier to install the district name paper 90. Also, because the district name paper 90 is temporarily fixed by the other district window cover 30, the district name paper 90 is less likely to shift or fall when the end cover 49 is attached to the main body 20.

[0065] In the fire receiver 100 of this embodiment, the multiple district window covers 30 include a first cover 41 that overlaps with the district name indicating the location of a fire and is uncolored or colored, and a second cover 42 that overlaps with the district name indicating the location of an abnormality other than a fire and is uncolored or colored so as to be a different color from the first cover 41.

[0066] This allows the fire receiver 100 of this embodiment to change the color of the district window 191 on which the district name is displayed depending on the type of abnormality that has occurred. Also, by coloring the district window cover 30 instead of the district name paper 90, it is possible to reduce color deterioration over time. Furthermore, compared to printing colors on the district name paper 90, it is possible to reduce the variation in how people see colors (it is easier to maintain color universal design).

[0067] In the fire receiver 100 of this embodiment, the display unit (district display unit 15) includes a plurality of district name papers 90 arranged side by side in the horizontal direction (X direction) on the main body 20.

[0068] This allows the fire receiver 100 of this embodiment to display a larger number of district names. Also, the difference between the horizontal length (X direction) and vertical length (Y direction) of the display unit (district display unit 15) is reduced. Therefore, the fire receiver 100 of this embodiment can improve the visibility of multiple district names.

[0069] In the fire receiver 100 of this embodiment, the district window cover 30 overlaps a plurality of district name papers 90 arranged side by side in the horizontal direction (X direction).

[0070] This makes it possible to cover multiple district name papers 90 with one district window cover 30. This reduces the number of times the district window cover 30 needs to be attached to the main body 20. The fire receiver 100 of this embodiment can further improve the work efficiency when installing the district name papers 90.

[0071] In the fire receiver 100 of this embodiment, the district window cover 30 can be divided in the horizontal direction (X direction).

[0072] This allows the district window covers 30 of different colors to be stacked for each district name using multiple district window covers 30 of the same shape. Therefore, since there is no need to prepare multiple types of district window covers 30 with different shapes, the fire receiver 100 of this embodiment can be manufactured more easily.

[0073] In the fire receiver 100 of this embodiment, the main body 20 is provided with retaining claws (first retaining claw 23 and second retaining claw 24) that hold the district window cover 30 at positions corresponding to each of a number of district names lined up horizontally (X direction).

[0074] This allows the district window cover 30 to be held at multiple points in the horizontal direction (X direction), suppressing deformation (deflection) of the district window cover 30. The fire receiver 100 of this embodiment can reduce the possibility of the district window cover 30 shifting or falling. Furthermore, when there are multiple types of abnormalities to be displayed in one row consisting of district names lined up in the horizontal direction (X direction), it becomes possible to attach district window covers 30 of different colors for each district name.

[0075] In the fire receiver 100 of this embodiment, the district window cover 30 has one or more claw fitting recesses (end recess 37 and middle recess 38) into which the retaining claws (first retaining claw 23 and second retaining claw 24) fit. At least one or more claw fitting recesses have a fitting confirmation display portion that is exposed when the retaining claws are not engaged and is not exposed when the retaining claws are engaged.

[0076] This makes it possible to check at a glance whether the retaining claws are fitted into the district window cover 30. In particular, when one district window cover 30 is held at multiple points in the lateral direction (X direction), it is possible to reliably prevent the retaining claws from leaking out.

[0077] In the fire receiver 100 of this embodiment, the main body 20 has a recess 22 into which the district name paper 90 fits.

[0078] As a result, when the district name paper 90 is inserted into the gap between the main body 20 and the district window cover 30, the district name paper 90 is less likely to get caught in the gap between the district window covers 30. The fire receiver 100 of this embodiment can further improve the work efficiency when installing the district name paper 90. In addition, the district name paper 90 gets caught on the inner wall of the recess 22. Therefore, the fire receiver 100 of this embodiment can reduce the possibility that the district name paper 90 will fall through the gap between the main body 20 and the district window cover 30.

[0079] In fire receiver 100 of the present embodiment, the depth of recess 22 is greater than the thickness of district name paper 90 .

[0080] This makes it difficult for the district name paper 90 to get caught by the district window cover 30 when the district name paper 90 is inserted into the gap between the main body 20 and the district window cover 30. The fire receiver 100 of this embodiment can further improve the work efficiency when installing the district name paper 90.

[0081] The fire receiver 100 of this embodiment can also be described as follows. The fire receiver 100 of this embodiment is a fire receiver equipped with a display unit (district display unit 15) that displays the location of an abnormality. The display unit includes a main body 20, a district name paper 90 on which the district name is written and which is arranged on the surface of the main body 20, a district window cover 30 that is attached to the main body 20 so as to overlap the district name paper 90 and has translucency, and a top cover 50 that is attached to the main body 20 so as to overlap the district window cover 30. The top cover 50 includes a translucent portion 51 that has translucency and overlaps the district name, and a shielding portion 53 that is arranged around the translucent portion 51 and has a transmittance lower than that of the translucent portion 51. The length W51 of the translucent portion 51 in the horizontal direction (X direction) is smaller than the length W90 of the district name paper 90 in the horizontal direction (X direction).

[0082] This allows the top cover 50 to hide both ends in the lateral direction (X direction) of the district name paper 90. Therefore, the fire receiver 100 of this embodiment can make the shift in the lateral direction (X direction) of the district name paper 90 less noticeable.

[0083] In the fire receiver 100 of this embodiment, the length H51 of the transmission portion 51 in the vertical direction (Y direction) is smaller than the length H30 of the district window cover 30 in the vertical direction (Y direction).

[0084] This allows the top cover 50 to hide both ends in the vertical direction (Y direction) of the district window cover 30. Therefore, the fire receiver 100 of this embodiment can make the gaps between the district window covers 30 less noticeable.

[0085] In the fire receiver 100 of this embodiment, the main body 20 has holding claws (first holding claw 23 and second holding claw 24) that hold the district window cover 30, and fitting parts (first fitting part 26 and second fitting part 27) that hold both ends in the lateral direction (X direction) of the top cover 50. The holding claws have chamfers (chamfers 231 and 241) at the ends in the lateral direction (X direction).

[0086] This makes it difficult for the top cover 50 to get caught on the retaining claws when the top cover 50 is slid laterally (in the X direction) to fit into the fitting portion. Therefore, the fire receiver 100 of this embodiment can make it easier to attach the top cover 50.

[0087] The fire receiver 100 of this embodiment can also be described as follows. The fire receiver 100 of this embodiment is a fire receiver equipped with a display unit (district display unit 15) that displays the location of the abnormality. The display unit includes a main body 20, a district name paper 90 on which the district name is written and which is placed on the surface of the main body 20, and a district window cover 30 that is attached to the main body 20 so as to overlap the district name paper 90 and has translucency. The main body 20 includes a first holding claw 23 that holds the district window cover 30, and a second holding claw 24 that holds the district window cover 30 at a position different from the first holding claw 23 in the horizontal direction relative to the district name paper 90. The first holding claw 23 includes a chamfer 231 at an end facing the second holding claw 24. The second holding claw 24 includes a chamfer 241 at an end opposite to the end facing the first holding claw 23.

[0088] This allows the district window cover 30 to be held at multiple points in the horizontal direction (X direction). In this case, there is a possibility that the district window cover 30 may get caught on the first retaining claw 23 or the second retaining claw 24 when the district window cover 30 is slid in the horizontal direction (X direction). In contrast, by providing the first retaining claw 23 with the chamfer 231 and the second retaining claw 24 with the chamfer 241, the district window cover 30 becomes easier to climb over the first retaining claw 23 or the second retaining claw 24. Therefore, the fire receiver 100 of this embodiment can hold the district window cover 30 at multiple points in the horizontal direction (X direction) and can reduce the possibility that the district window cover 30 will get caught on the first retaining claw 23 or the second retaining claw 24.

[0089] In the fire receiver 100 of this embodiment, the second holding claw 24 has a chamfer 243 at the corner facing the district name paper 90.

[0090] This makes it easier to insert the district window cover 30 inside the second retaining claw 24. Also, in the second retaining claw 24, the two chamfers (the chamfer 241 on the end opposite to the end facing the first retaining claw 23, and the chamfer 243 on the corner facing the district name paper 90) are less likely to overlap in the horizontal direction (X direction). Therefore, the fire receiver 100 of this embodiment can prevent the second retaining claw 24 from becoming thicker in the depth direction compared to when the two retaining claws in the second retaining claw 24 overlap in the depth direction (Z direction).

[0091] In the above embodiment, the top cover 50 is slid laterally (X direction) to fit into the fitting portions (the first fitting portion 26 and the second fitting portion 27), but the method of fitting the top cover 50 is not limited to this.

[0092] The top cover 50 is made of an elastically deformable material. The top cover 50 is made of, for example, a thin plate of polycarbonate (PC). When fitting the top cover 50 into the fitting parts (the first fitting part 26 and the second fitting part 27), it is also possible to implement a method in which the top cover 50 is pushed in from the front and the first protrusion 56, the second protrusion 57 and their surroundings are elastically deformed to fit the top cover 50.

[0093] The first retaining claw 23 may also be provided with a chamfer for covering a district window that corresponds to the chamfer 243 of the second retaining claw 24. The chamfer for covering a district window is provided at a corner that is an end in the +X direction and an end in the +Z direction of the first retaining claw 23. It can also be said that the chamfer for covering a district window is provided at a corner that faces the district name paper 90.

[0094] As described above, when the task of pushing the top cover from the front is a common task, the chamfer 231 may be omitted, and the first retaining claw 23 may only have the chamfer for the district window cover as the chamfer.

[0095] In the above embodiment, the perforations 39 are arranged on both sides of the intermediate recess 38 in the Y direction, but what is arranged at the relevant locations is not limited to perforations. For example, what is arranged at the relevant locations may be configured by printing or the like and configured to function as a marker when dividing the district window cover 30 in the X direction.

[0096] The depth D22 of the recess 22 is preferably 0.4 mm or more, but is not limited thereto. Since the thickness of the district name paper 90 is, for example, about 0.1 mm, if the depth D22 is about 0.1 mm or more, the district name paper 90 can be installed in the recess 22. The installation can be improved by making the depth D22 of the recess 22 larger than the thickness of the district name paper 90, but if the depth D22 of the recess 22 is made larger, the district name paper 90 may fall off, so it is desirable to set it to an appropriate value. The district name paper 90 may be held without providing the recess 22. In this case, for example, the first holding claw 23 and the second holding claw 24 are moved to the -Z direction side, so that the district window cover is positioned on the -Z direction side of the district name paper 90.

[0097] The first retaining claw 23 and the second retaining claw 24 between the two recesses 22 are at different positions in the horizontal direction (X direction), but are not limited to this. The first retaining claw 23 and the second retaining claw 24 between the two recesses 22 may be configured as one common retaining claw. In this case, the end of the common retaining claw on the +X direction side fits with a part of the district window cover 30, and the end of the common retaining claw on the -X direction side fits with the end of the intermediate recess 38 on the -X direction side. [Explanation of symbols]

[0098] 10. Chassis 11 Main unit 13 Door 14 Display Panel 15 District display section 16 Type display section 17 Operation display section 19 District Window Panel 20 Main unit 21 Base 22 Recess 23 1st holding claw (holding claw) 24 2nd holding claw (holding claw) 25 Round Hole 26 First fitting portion (fitting portion) 27 Second fitting portion (fitting portion) 28 Upper claw 29 Lower claw 30 District Window Coverings 31 Covering section 33 Connecting part 35 End protrusion 36 Fitting confirmation indicator 37 End recess (claw fitting recess) 38 Intermediate recess (claw engagement recess) 39 Perforation 41 First Cover 42 2nd Cover 49 End Cover 50 Top cover 51 Transparent part 53 Shield part 55 Lamp Window 56 1st protrusion 57 Second protrusion 90 District name paper 100 Fire Receiver 101 Receiving member 101a Side plate 101b Front panel 101c Top 101d inclined plate 103 Roller support member 105 Lola 107 tablets 191 District Window 193 Indicator light 231, 241, 243 Chamfer 301 Window cover fragment from District 1 302 Window cover fragment from District 2

Claims

1. A fire alarm system having a display unit that displays the location of an abnormality, The display unit is The main body, A district name sheet on which a district name is written and which is placed on the surface of the main body; a district window cover attached to the main body so as to overlap the district name paper and having translucency; A top cover attached to the main body so as to overlap the district window cover; Equipped with the top cover includes a light-transmitting portion that is translucent and overlaps the district name, and a shielding portion that is disposed around the light-transmitting portion and has a transmittance lower than that of the light-transmitting portion, The horizontal length of the transparent portion is smaller than the horizontal length of the district name paper. Fire alarm system.

2. The vertical length of the transmission portion is smaller than the vertical length of the area window cover. The fire alarm system according to claim 1.

3. The main body includes a retaining claw that retains the district window cover and a fitting portion that retains both lateral ends of the top cover, The retaining claws are provided with chamfers on their lateral ends. The fire alarm system according to claim 2.

4. A fire alarm system having a display unit that displays the location of an abnormality, The display unit is The main body, A district name sheet on which a district name is written and which is placed on the surface of the main body; a district window cover attached to the main body so as to overlap the district name paper and having translucency; Equipped with The main body includes a first retaining claw that retains the district window cover, and a second retaining claw that retains the district window cover at a position laterally different from that of the first retaining claw, The first retaining claw has a chamfer on an end facing the second retaining claw, The second retaining claw has a chamfer on an end opposite to the end facing the first retaining claw. Fire alarm system.

5. The second retaining claw has a chamfer at the corner facing the district name paper. The fire alarm system according to claim 4.

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