Disaster prevention device

Abstract

This invention provides a fire prevention device that can suppress the risk of malfunctions caused by dust intrusion without reducing the alarm volume. [Solution] The disaster prevention device (100) comprises an acoustic device (10) that outputs an alarm sound, a control unit (20) that causes the acoustic device (10) to output an alarm sound when an abnormality occurs, and a housing (30) that houses the acoustic device (10) and the control unit (20) inside, wherein an acoustic hole (35) is provided on the front of the housing (30), the acoustic device (10) is provided in a position facing the acoustic hole (35) inside the housing (30), and the disaster prevention device (100) further comprises a shield (1) provided in a position that spatially partitions the space between the acoustic device (10) and the control unit (20) inside the housing (30).

Description

Technical Field

[0001] The present disclosure relates to a disaster prevention device that issues an alarm when an abnormality occurs.

Background Art

[0002] In disaster prevention devices such as receivers and alarm panels, a speaker is installed inside. Also, in such disaster prevention devices, in order not to block the alarm sound emitted when an abnormality occurs, acoustic holes are provided on the front surface of the housing where the speaker is installed.

[0003] On the other hand, there is a risk that dust may enter the housing through this acoustic hole. If the dust that has entered the housing adheres to the internal substrate or the like, there is a risk that the disaster prevention device may malfunction.

[0004] Also, the following is disclosed as a fire receiver that prevents the intrusion of dust (for example, see Patent Document 1). The fire receiver in Patent Document 1 has a window portion, which is an opening hole, formed on the front surface of the opening and closing door, and in a state where the opening and closing door is closed, the display operation panel housed inside the housing body is exposed through the window portion. And in the fire receiver in Patent Document 1, a sealing elastic member is disposed around the window portion of the opening and closing door. Thereby, in a state where the opening and closing door is closed, the gap between the window portion and the display operation panel can be filled with the sealing elastic member, and the intrusion of dust can be prevented.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In mass-produced residential fire alarms, a coating agent is sometimes applied to the circuit board for dust and moisture protection. On the other hand, in the case of fire prevention devices such as receivers and alarm panels, the production volume is smaller than that of residential fire alarms, and they are often installed in rooms where people are always present, i.e., in suitable environments. For this reason, the application of a coating agent is not performed during the manufacturing process of receivers, alarm panels, etc.

[0007] Another option is to enclose the fire prevention device itself in a dustproof box to protect it from dust. However, in this case, the alarm sound would be muffled by the dustproof box, resulting in a lower output volume.

[0008] In the fire alarm receiver disclosed in Patent Document 1, the gap formed between the window and the display and operation panel is filled with an object to block the entry point for dust and improve airtightness. If, following the same idea, the acoustic holes that serve as entry points for dust are blocked with an object, the volume output from the speaker will decrease, similar to the example of the dustproof box described above.

[0009] This disclosure is made to solve the above-mentioned problems and aims to provide a disaster prevention device that can suppress the risk of malfunctions caused by dust intrusion without reducing the alarm volume. [Means for solving the problem]

[0010] The disaster prevention device according to this disclosure comprises an acoustic device that outputs an alarm sound, a control unit that causes the acoustic device to output an alarm sound when an abnormality occurs, and a housing that houses the acoustic device and the control unit inside, wherein an acoustic hole is provided on the front of the housing, the acoustic device is provided inside the housing at a position facing the acoustic hole, and the disaster prevention device further comprises a shield provided at a position that spatially separates the acoustic device and the control unit inside the housing. [Effects of the Invention]

[0011] According to this disclosure, it is possible to provide a fire prevention device that can suppress the risk of malfunctions caused by dust intrusion without reducing the alarm volume. [Brief explanation of the drawing]

[0012] [Figure 1] This is a side view showing an example of the internal configuration of a disaster prevention device in Embodiment 1 of this disclosure. [Figure 2] Figure 1 is a front view showing an example of the internal configuration of the disaster prevention device. [Modes for carrying out the invention]

[0013] Hereinafter, preferred embodiments of the disaster prevention device of this disclosure will be described with reference to the drawings. The fire prevention device described herein includes a dustproof film as a shielding material between the speaker and the circuit board, which are located inside the enclosure, thereby spatially separating the speaker and the circuit board. This prevents dust entering through the acoustic holes from reaching the circuit board.

[0014] Embodiment 1. Figure 1 is a side view showing an example of the internal configuration of a disaster prevention device in Embodiment 1 of this disclosure. Figure 2 is a front view showing an example of the internal configuration of the disaster prevention device shown in Figure 1.

[0015] Figure 1 is a side view of the housing 30 shown in Figure 2, with the side 34 transparent and viewed from the side of the side 34. Figure 2 is a front view of the housing 30 shown in Figure 1, with the front 31A transparent and viewed from the side of the front 31A.

[0016] The disaster prevention device 100 shown in Figures 1 and 2 is a device that emits an alarm sound when an abnormality occurs, and is, for example, a receiver or an emergency alarm device.

[0017] As shown in Figure 1, the disaster prevention device 100 comprises a speaker 10, a circuit board 20, and a dustproof film 1, all of which are housed inside the housing 30.

[0018] The housing 30 is an exterior that protects the internal devices of the disaster prevention device 100, and has a door structure such that the front surface 31A side of the housing 30 can be opened and closed.

[0019] The speaker 10 is an acoustic device that outputs an alarm sound. As shown in FIG. 1, the speaker 10 is provided on the front surface 31A side of the housing 30, and is provided so as to face the front side inner surface 31B which is the inner surface of the housing 30 at the position of the sound hole 35.

[0020] If the main body of the speaker 10 and the front side inner surface 31B are in contact with each other, resonance will occur and the sound quality of the alarm sound will deteriorate or physical damage will occur. For this reason, the speaker 10 is provided at a position separated from the front side inner surface 31B so that a gap 43 is formed.

[0021] The substrate 20 is a control unit on which a controller that controls the speaker 10 is mounted so that an alarm sound is output from the speaker 10 when an abnormality occurs. As shown in FIG. 1, the substrate 20 is provided on the back surface 32A side of the housing 30 and is fixed to the back side inner surface 32B which is the back surface of the back surface 32A.

[0022] The dust-proof film 1 is a shielding object provided near the center inside the housing 30 in the side view shown in FIG. 1, and is provided so as to spatially partition between the speaker 10 and the substrate 20. Here, of the internal space of the housing 30 partitioned by the dust-proof film 1, the space where the speaker 10 is installed is referred to as the first internal space 41, and the space where the substrate 20 is installed is referred to as the second internal space 42.

[0023] In addition, as shown in FIG. 2, a slit 1A is provided at the lower part of the dust-proof film 1, and a gap 44 is formed between the dust-proof film 1 and the housing 30. The gap formed by the slit 1A and the gap 44 shown in FIG. 2 allow the first internal space 41 and the second internal space 42 to communicate with each other, enabling air to flow in and out between them. Incidentally, the wiring between the substrate 20 and the speaker 10 can be arranged to pass through the gap 44.

[0024] Also, on the upper-side inner surface 33B, which is the back surface of the upper surface 33A of the housing 30, a fastening mechanism 2 such as a fastener is provided as an engaging member. By engaging the fastening mechanism 2 with the dust-proof film 1, the dust-proof film 1 can be fixed to the upper-side inner surface 33B so as to be detachable.

[0025] As described above, since a gap 43 is formed between the speaker 10 and the front-side inner surface 31B, dust D enters the housing from the outside through the gap 43. On the other hand, the dust-proof film 1 can prevent the intrusion of dust D in the first internal space 41 and prevent it from entering the second internal space 42.

[0026] On the other hand, as described above, when the slit 1A is provided in the dust-proof film 1 and the gap 44 is formed, although the amount is small, dust D enters from the first internal space 41 into the second internal space 42. However, since the ventilation in the second internal space 42 is improved due to the formation of such a slit 1A and gap 44, the adverse effect of moisture on the substrate 20 can be mitigated.

[0027] <00001,08>Also, as one aspect, as shown in FIG. 1, an eaves portion 50 protruding outward from a position above the acoustic hole 35 may be provided on the front surface 31A as a dust guard. In this case, considering that the eaves portion 50 may come into contact with people, it is made of silicon or the like instead of the same iron plate as the housing 30.

[0028] In the above embodiment 1, the dustproof film 1 was described as a single sheet-like member, but it may also be composed of multiple sheet-like members.

[0029] For example, if the dustproof film 1 is made up of two sheet-like members, the first sheet on the speaker 10 side may be a sheet-like member that covers the entire surface as shown in Figures 1 and 2, while the second sheet on the substrate 20 side may be a sheet-like member that partially covers the substrate 20. In this case, the slit 1A may be provided only in the first or second sheet.

[0030] As shown in these examples, when the dustproof film 1 is composed of multiple sheet-like members, the shape of each sheet-like member may be different.

[0031] Furthermore, in the above-described embodiment 1, a dustproof film 1, that is, a flexibly deformable sheet-like member, was described as a shield that spatially separates the speaker 10 and the substrate 20. On the other hand, a non-deformable material such as plastic or metal may be used as such a shield. Also, the shape of the shield may be, for example, an L-shape that covers the speaker 10.

[0032] In other words, the shield can take various forms as long as it is positioned to spatially separate the speaker 10 and the circuit board 20.

[0033] Furthermore, in Embodiment 1, a slit 1A is provided at the bottom of the dustproof film 1 to improve ventilation in the second internal space 42. Alternatively, the slit 1A may be provided at the top or in the middle of the dustproof film 1.

[0034] On the other hand, dustproofing of the substrate 20 may be improved by not providing the slit 1A, and in addition, a configuration may be adopted in which no gap 44 is formed in order to further improve dustproofing.

[0035] Furthermore, information regarding the handling of the disaster prevention device 100, such as instructions for inspection personnel and inspection procedures, may be printed on the dustproof film 1. By making the dustproof film 1 a transparent or translucent sheet, or a thin, breathable sheet, it is also possible to clearly indicate inspection work guidance, such as "Connect the fuse here," in accordance with the arrangement of the circuit board 20.

[0036] Furthermore, a two-dimensional code for accessing a website providing information on the handling of the disaster prevention device 100 may be printed on the dustproof film 1. This allows inspection workers to access the website using their own communication terminals and view instruction manuals, inspection procedures, and other information regarding the disaster prevention device 100.

[0037] To summarize the features of this disaster prevention device 100, it has the following configuration and can achieve its intended effect.

[0038] The disaster prevention device 100 comprises a speaker 10 that outputs an alarm sound, a circuit board 20 that outputs an alarm sound from the speaker 10 when an abnormality occurs, and a housing 30 that houses the speaker 10 and the circuit board 20 inside.

[0039] The front surface 31A of the housing 30 is provided with an acoustic hole 35, and the speaker 10 is positioned inside the housing 30 facing the acoustic hole 35. The fire prevention device 100 further includes a dustproof film 1 positioned inside the housing 30 to spatially partition the space between the speaker 10 and the circuit board 20.

[0040] This makes it possible to provide a fire prevention device 100 that can protect the control unit substrate 20 from dust D, and suppress the risk of control malfunctions occurring due to dust D entering the housing 30 and adhering to the substrate 20.

[0041] Furthermore, the dustproof film 1 is detachably attached to the upper inner surface 33B of the housing 30 by engaging with a fastening mechanism 2 provided on the upper inner surface 33B of the housing 30. This allows the dustproof film 1 to be replaced, and the replacement process can be easily carried out.

[0042] Furthermore, the dustproof film 1 contains information regarding the handling of the disaster prevention device 100, or a code that allows access to a website providing such information. This allows workers performing inspection work to check the dustproof film 1 while working.

[0043] Furthermore, the dustproof film 1 is a sheet-like material with a gap that connects the first internal space 41 where the speaker 10 is installed and the second internal space 42 where the substrate 20 is installed. This gap is formed by providing a slit 1A in the sheet-like material. By providing such a gap, ventilation in the second internal space 42 can be ensured, and adverse effects on the substrate 20 due to moisture can be mitigated.

[0044] Furthermore, the front surface 31A of the housing 30 is provided with an overhang portion 50 that protrudes outward from above the acoustic hole 35. This reduces the amount of dust D that enters through the acoustic hole 35. [Explanation of Symbols]

[0045] 1 Dustproof film (shielding), 1A Slit, 2 Fastener mechanism (engaging member), 10 Speaker (sound device), 20 Circuit board (control unit), 30 Housing, 31A Front, 31B Front inner surface (inner surface), 32A Rear, 32B Rear inner surface, 33A Top surface, 33B Top inner surface (inner surface), 34 Side, 35 Acoustic hole, 41 First internal space, 42 Second internal space, 43, 44 Gap, 50 Overhang, 100 Fire prevention device, D Dust.

Claims

1. An acoustic device that emits an alarm sound, A control unit that outputs the alarm sound from the sound device when an abnormality occurs, A housing that houses the aforementioned sound device and the aforementioned control unit, A disaster prevention device equipped with, The front of the aforementioned housing is provided with acoustic holes, The sound device is provided inside the housing at a position facing the sound hole, The disaster prevention device further includes a shielding element provided at a position that spatially separates the sound device and the control unit within the housing. Disaster prevention device.

2. The shield is detachably attached to the inner surface of the housing by engaging with an engaging member provided on the inner surface of the housing. The disaster prevention device according to claim 1.

3. The aforementioned shield contains information regarding the handling of the disaster prevention device, or a code that allows access to a site providing such information. The disaster prevention device according to claim 1 or 2.

4. The shielding material is a sheet-like member, and has a gap that connects the first internal space where the sound device is installed and the second internal space where the control unit is installed. The disaster prevention device according to claim 1 or 2.

5. The gap is formed by providing a slit in the sheet-like member. The disaster prevention device according to claim 4.

6. The front surface of the housing is provided with an overhang portion that protrudes outward from above the acoustic hole. The disaster prevention device according to claim 1 or 2.

Images