CN220584739U - Audible and visual alarm device - Google Patents

Abstract

The application relates to fire alarm equipment technical field discloses an audible and visual alarm, include: a housing; the lampshade is connected with the shell, and the front end part of the lampshade is provided with an acoustic transmission opening; the waterproof sound-transmitting membrane is arranged in the lampshade; the alarm component is arranged in the lampshade and comprises a sound generating element and a light emitting element; the circuit board is arranged in the lampshade, and the sounding element and the luminous element are connected with the circuit board; wherein, along the direction of the preceding tip towards the rear end of lamp shade, waterproof sound-transmitting membrane, sound generating element, light emitting element and circuit board set gradually. In this embodiment, sound that sound production component sent can not only pass through waterproof sound-transmitting membrane and spread, and waterproof sound-transmitting membrane can also carry out waterproof sealing to sound production component, luminescent element and circuit board, reduces outside water droplet or rivers and gets into in the lamp shade, and the condition that the interference sound production component, luminescent element and circuit board work takes place, has improved audible and visual alarm's water-proof effects and barrier propterty.

Description

Audible and visual alarm device

Technical Field

The application relates to the technical field of fire alarm equipment, for example, to an audible and visual alarm device.

Background

An audible and visual alarm (also called audible and visual alarm) is an alarm signal device which is used in dangerous places and can send alarm signals to people through sound and various lights. When an accident or fire disaster and other emergency occur in the production site, the control signal sent by the fire disaster alarm controller starts the audible and visual alarm circuit to send out audible and visual alarm signals, so as to fulfill the alarm aim. The device can also be matched with a manual alarm button to achieve the purpose of simple audible and visual alarm.

Patent document with bulletin number of CN214890696U discloses an LED acousto-optic alarm lamp, which comprises a housin, the lamp shade base is installed at shells inner wall's top, sound production component and acousto-optic circuit board are installed to the inner wall of lamp shade base, enclose into the cavity between casing and the lamp shade base, drive circuit board is installed to the inner wall of cavity, drive circuit board's surface mounting has connecting wire, connecting wire keeps away from drive circuit board's one end and extends to the casing outside, sound production component passes through acousto-optic circuit board to fix on the lamp shade base, and it has waterproof packing to pour into between lamp shade base and sound production component.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

in the related art, the sounding element is fixed on the lampshade base through the acousto-optic circuit board, and waterproof filling glue is poured between the lampshade base and the sounding element, so that the connection position of the sounding element and the acousto-optic circuit board can be sealed in a waterproof mode. The sounding part of the sounding element is arranged opposite to the opening of the lampshade so as to increase the propagation distance of sound, but external water drops and the like still can flow into the lampshade through the opening of the lampshade so as to interfere the work of the sounding element and even enable the sounding element to enter water through the sounding element, so that the waterproof effect of the LED acousto-optic alarm lamp is poor.

It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides an audible and visual alarm device to solve the problem that the audible and visual alarm device is poor in waterproof performance and improve the protective performance of the audible and visual alarm device.

According to an embodiment provided herein, there is provided an audible and visual alarm device including: a housing; the lampshade is connected with the shell, and the front end part of the lampshade is provided with an acoustic transmission opening; the waterproof sound-transmitting membrane is arranged in the lampshade; the alarm component is arranged in the lampshade and comprises a sound generating element and a light emitting element; the circuit board is arranged in the lampshade, and the sounding element and the luminous element are connected with the circuit board; wherein, along the direction of the preceding tip towards the rear end of lamp shade, waterproof sound-transmitting membrane, sound generating element, light emitting element and circuit board set gradually.

In some alternative embodiments, the housing includes a front shell and a rear shell defining an interior space, the front shell being provided with an opening, the lamp housing including a first housing and a second housing, the first housing being coupled to the second housing, the first housing being located in the interior space, the second housing being located outside the housing through the opening.

In some alternative embodiments, the inner side wall of the second cover body is provided with a first mounting table in a protruding manner towards the direction of the first cover body, the first mounting table extends in an annular shape, the projection of the sound-transmitting opening is located in the first mounting table along the direction of the front end part of the lampshade towards the rear end part of the lampshade, and the waterproof sound-transmitting membrane is connected with the first mounting table.

In some alternative embodiments, the inner side wall of the second cover body is further provided with a second mounting table in a protruding manner towards the direction of the first cover body, the second mounting table extends in an annular shape, and the sound generating element is connected with the second mounting table.

In some optional embodiments, the direction of the inside wall of the second cover body towards the first cover body is further provided with a limiting table in a protruding mode, the limiting table comprises an annular limiting body and a buckle, and the audible and visual alarm device further comprises:

the circumference lateral wall of apron is connected with annular spacing body, and the one end and the buckle of apron are connected, and the other end and the sound element butt of apron, and the apron is limited with partial second cover body and is had the resonance chamber, and the sound element is located the resonance intracavity.

In some alternative embodiments, one or more third mounting tables are further protruding from the inner side wall of the second cover body towards the direction of the first cover body, the circuit board is connected with the third mounting tables, and the light-emitting element is arranged on the circuit board.

In some alternative embodiments, two ends of the first cover body respectively abut between the front shell and the rear shell.

In some alternative embodiments, the audible and visual alarm device further comprises: the sealing ring is pressed between the first cover body and the rear shell.

In some alternative embodiments, some or all of the globe comprises a transparent material.

In some alternative embodiments, the sound emitting element comprises a buzzer; and/or the number of the groups of groups,

the light emitting element comprises one or more light emitting diodes.

The audible and visual alarm device provided by the embodiment of the disclosure can realize the following technical effects:

in this embodiment, sound generating element and luminescent element locate in the lamp shade, sound generating element can send out the warning sound, and luminescent element sends out alarm light to remind the user to take place police such as conflagration, realize the alarming purpose. The front end of the lampshade is provided with a sound transmission opening, sound emitted by the sound generating element can be transmitted through the sound transmission opening, so that the energy loss of the sound emitted by the sound generating element can be reduced, and the sound transmission effect and the sound generating efficiency of the sound-light alarm device are improved. The circuit board is arranged in the lampshade, the sounding element and the light-emitting element are connected with the circuit board, the sounding element and the light-emitting element can receive signals of the circuit board, and when the circuit board sends out alarm signals, the light-emitting element and the sounding element give an alarm. The waterproof sound-transmitting membrane is arranged in the lamp shade, and is sequentially arranged along the direction of the front end part of the lamp shade towards the rear end part of the lamp shade, the sound-transmitting membrane, the sound-generating element, the light-emitting element and the circuit board. Like this, sound that sound production component sent can not only pass through waterproof sound-transmitting membrane and spread, and waterproof sound-transmitting membrane can also carry out waterproof sealing to sound production component, light-emitting component and circuit board, reduces outside water droplet or rivers and gets into in the lamp shade, and the condition that disturbs sound production component, light-emitting component and circuit board work takes place, has improved audible and visual alarm's water-proof effects and barrier propterty.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic diagram of an audible and visual alarm device according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of an audible and visual alarm device according to an embodiment of the present disclosure;

FIG. 3 is an enlarged schematic view of the portion A of FIG. 2;

FIG. 4 is a schematic diagram of an exploded structure of an audible and visual alarm device provided in an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a lampshade according to an embodiment of the present disclosure.

Reference numerals:

100. a housing; 110. a front shell; 111. an opening; 120. a rear case; 200. a lamp shade; 210. a first cover; 220. a second cover; 221. an acoustically transparent opening; 222. a first mounting table; 223. a second mounting table; 224. a limiting table; 2241. an annular limit body; 2242. a buckle; 225. a third mounting table; 300. a waterproof sound-transmitting membrane; 400. a sound emitting element; 500. a light emitting element; 600. a circuit board; 700. a cover plate; 800. and (3) sealing rings.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

The disclosed embodiment provides an audible and visual alarm device, which includes a housing 100, a lamp housing 200, a waterproof sound-transmitting membrane 300, an alarm assembly, and a circuit board 600, as shown in fig. 1 to 5. The lamp housing 200 is connected to the case 100, and an acoustic opening 221 is provided at a front end portion of the lamp housing 200. The waterproof sound-transmitting membrane 300 is provided in the lamp housing 200. The alarm assembly is disposed in the lamp housing 200, and the alarm assembly includes a sound emitting element 400 and a light emitting element 500. The circuit board 600 is disposed in the lamp housing 200, and the sound generating element 400 and the light emitting element 500 are connected to the circuit board 600. Wherein, waterproof sound-transmitting membrane 300, sound-emitting element 400, light-emitting element 500, and circuit board 600 are disposed in this order along the direction of the front end portion of lamp shade 200 toward the rear end portion of lamp shade 200.

In this embodiment, the sounding element 400 and the light emitting element 500 are disposed in the lampshade 200, and the sounding element 400 can emit alarm sounds, and the light emitting element 500 emits alarm lights to remind a user of an alarm condition such as fire, so as to achieve an alarm purpose. The front end of the lamp shade 200 is provided with the sound transmission opening 221, and the sound emitted by the sound generating element 400 can be transmitted through the sound transmission opening 221, so that the energy loss of the sound emitted by the sound generating element 400 can be reduced, and the sound transmission effect and the sound generating efficiency of the audible and visual alarm device are improved. The circuit board 600 is arranged in the lampshade 200, the sound generating element 400 and the light emitting element 500 are connected with the circuit board 600, the sound generating element 400 and the light emitting element 500 can receive signals of the circuit board 600, and when the circuit board 600 sends out alarm signals, the light emitting element 500 and the sound generating element 400 give an alarm. The waterproof sound-transmitting film 300 is provided in the lamp housing 200, and the waterproof sound-transmitting film 300, the sound-emitting element 400, the light-emitting element 500, and the circuit board 600 are provided in this order along the direction from the front end portion of the lamp housing 200 toward the rear end portion of the lamp housing 200. Like this, sound that sound production element 400 sent can not only pass through waterproof sound-transmitting membrane 300 and spread, and waterproof sound-transmitting membrane 300 can also carry out waterproof sealing to sound production element 400, light-emitting element 500 and circuit board 600, reduces outside water droplet or rivers and gets into in the lamp shade 200, and the condition that the interference sound production element 400, light-emitting element 500 and circuit board 600 work takes place, has improved audible and visual alarm's water-proof effects and barrier property.

The waterproof sound-transmitting membrane 300 is made of a high molecular material, and is waterproof and sound-transmitting. In the state of the moisture, the moisture particles are very fine, and according to the principle of capillary action, the moisture may permeate from one side of the sound emitting element 400 to the other side (outside) of the waterproof sound-transmitting membrane 300, so that a vapor-transmitting phenomenon occurs to release the inside moisture to the outside environment. When water vapor is condensed and liquefied into water drops or external water drops flow on the waterproof sound-transmitting membrane 300, water particles become large, and due to the action of the surface tension of the water drops (the water molecules are mutually 'pulled and counterbalanced'), the water molecules cannot be well separated from the water drops and then permeate back, namely, the water permeation is prevented, so that the waterproof sound-transmitting membrane 300 has a waterproof function. Therefore, the waterproof sound-transmitting membrane 300 can be waterproof and also has better sound-transmitting performance.

Illustratively, the sound emitting element 400 includes a buzzer.

The buzzer is an electronic sounder with an integrated structure, adopts direct-current voltage to supply power and is used as a sounding device. Optionally, the buzzer is a piezoelectric buzzer or an electromagnetic buzzer.

As illustrated in fig. 2, 4 and 5, the case 100 includes a front case 110 and a rear case 120, the front case 110 and the rear case 120 defining an inner space, the front case 110 being provided with an opening 111, and the lamp housing 200 including a first cover 210 and a second cover 220, the first cover 210 being coupled to the second cover 220, the first cover 210 being positioned in the inner space, the second cover 220 being positioned outside the case 100 through the opening 111.

Optionally, the front case 110 is provided with a first mounting hole, the rear case 120 is provided with a second mounting hole, and the audible and visual alarm device further includes a bolt, which is simultaneously located in the first mounting hole and the second mounting hole, so that the front case 110 and the rear case 120 are connected. Optionally, the inner side wall of the first mounting hole is provided with threads, or the inner side wall of the second mounting hole is provided with threads.

Further, as shown in fig. 2, both ends of the first cover 210 are respectively abutted between the front case 110 and the rear case 120.

In this way, the front case 110 and the rear case 120 may fix the first cover 210 in the receiving space. The first cover 210 is connected at both ends to the front case 110 and the opposite side walls of the rear side, respectively. That is, the first cover 210 extends in a first direction of the front case 110 toward the rear case 120, and an extension length of the first cover 210 in the first direction corresponds to a distance between the front case 110 and the rear-side opposite side wall. The first casing 210 is connected to the second casing 220. The connection position of the front case 110 and the rear case 120 corresponds to the first cover 210, so that water drops entering the accommodating space from the connection position of the front case 110 and the rear case 120 can be reduced, and thus the condition of entering the alarm assembly and the circuit board 600 can be avoided, and only the connection position of the first cover 210 and the rear case 120 can be sealed, and the sealing requirement of the connection position of the front case 110 and the rear case 120 is low. The use of the sealing part at the joint is reduced, the production and processing technology of the audible and visual alarm device is simplified, and the production cost of the audible and visual alarm device is reduced.

Further, as shown in fig. 2 and 4, the audible and visual alarm device further includes a sealing ring 800, and the sealing ring 800 is pressed between the first cover 210 and the rear housing 120.

In this way, the joint of the first cover 210 and the rear housing 120 is sealed, so that the occurrence of the condition that water drops enter the alarm assembly and the circuit board 600 through the joint of the first cover 210 and the rear housing 120 is reduced, and the protection effect of the audible and visual alarm device is improved.

In some alternative embodiments, some or all of the globe 200 may be made of a transparent material.

In this embodiment, part or all of the lampshade 200 is made of transparent material, so that the light emitted by the light-emitting element 500 can be transmitted out to realize an alarm effect.

Optionally, the first cover 210 and the second cover 220 are integrally formed, and the material of all the lamp covers 200 includes transparent material.

Alternatively, the second cover 220 has a hemispherical structure, so that the light emitting element 500 can be refracted to improve the light emitting effect of the light emitting element 500. And, the second cover 220 is located outside through the opening 111, i.e., the second cover 220 is protruded on the surface of the front case 110. This may facilitate a user to observe the audible and visual alarm device to determine whether the light emitting element 500 emits light.

As shown in fig. 3 and 5, the inner sidewall of the second cover 220 is provided with a first mounting base 222 protruding toward the first cover 210, the first mounting base 222 extends in a ring shape, the projection of the sound-transmitting opening 221 is located in the first mounting base 222 along the direction of the front end of the lamp shade 200 toward the rear end of the lamp shade 200, and the waterproof sound-transmitting membrane 300 is connected to the first mounting base 222.

The inner side wall of the second cover 220 is a side wall of the second cover 220 facing the inner space, and the outer side wall of the second cover 220 is a side wall of the second cover 220 facing the outside of the audible and visual alarm device. In this embodiment, the inner sidewall of the second cover 220 protrudes toward the direction of the first cover 210, and the first mounting stand 222 extends in a ring shape. Along the direction from the front end of the lamp housing 200 toward the rear end of the lamp housing 200, the projection of the sound-transmitting opening 221 is located in the first mount 222, and the waterproof sound-transmitting membrane 300 is connected to the first mount 222.

Thus, the waterproof sound-transmitting membrane 300 can block water drops entering the lamp shade 200 through the sound-transmitting opening 221, reduce the occurrence of the condition that the water drops enter the alarm assembly and the circuit board 600, and improve the protection effect of the sound-light alarm device.

Optionally, the waterproof sound-transmitting membrane 300 is glued to the first mounting stage 222.

In some alternative embodiments, as shown in fig. 3 and 5, the inner side wall of the second cover 220 is further provided with a second mounting platform 223 protruding toward the direction of the first cover 210, the second mounting platform 223 extends in a ring shape, and the sound generating element 400 is connected to the second mounting platform 223.

In this embodiment, the second mounting table 223 extending in an annular shape is further protruding on the inner side wall of the second cover 220, the sound generating element 400 is connected to the second mounting table 223, and the second mounting table 223 is used for fixing the sound generating element 400.

Alternatively, in a direction in which the front end portion of the lamp housing 200 faces the rear end portion of the lamp housing 200, the projection of the first mounting table 222 is located in the second mounting table 223, and the second housing 220 is arranged in a hemispherical shape, that is, the second mounting table 223 extends annularly with an inner diameter larger than that of the first mounting table 222, and the tip end of the second mounting table 223 is located at the rear side of the tip end of the first mounting table 222. In this way, the sound-producing element 400 is disposed at the rear side of the waterproof sound-transmitting membrane 300, so that the protection effect of the waterproof sound-transmitting membrane 300 on the sound-producing element 400 is improved.

Further, as shown in fig. 2 to 5, the inner side wall of the second cover 220 is further provided with a limiting platform 224 protruding toward the direction of the first cover 210, and the limiting platform 224 includes an annular limiting body 2241 and a buckle 2242.

The audible and visual alarm device further comprises a cover plate 700, the circumferential side wall of the cover plate 700 is connected with the annular limiting body 2241, one end of the cover plate 700 is connected with the buckle 2242, the other end of the cover plate 700 is abutted with the sounding element 400, the cover plate 700 and part of the second cover body 220 are limited with a resonance cavity, and the sounding element 400 is located in the resonance cavity.

In this embodiment, as shown in fig. 5, the inner side wall of the second cover 220 further has a protruding limiting platform 224, where the limiting platform 224 includes an annular limiting body 2241 and a buckle 2242, one end of the cover plate 700 is connected with the buckle 2242, and the other end of the cover plate 700 is abutted against the sound generating element 400. Thus, the cover plate 700 can also limit and fix the sound generating element 400, so as to improve the installation strength of the sound generating element 400, and further improve the use stability and reliability of the audible and visual alarm device.

The circumferential side wall of the cover plate 700 is connected with the annular limiting body 2241, the cover plate 700 and a part of the second cover body 220 define a resonance cavity, and the sound generating element 400 is located in the resonance cavity. Thus, resonance can be generated when the sound generating element 400 generates sound, and the sound pressure is improved, so that the sound generating effect of the sound generating element 400 is improved.

Optionally, the side wall of the cover plate 700 facing the sound generating element 400 is provided with a groove, and the thickness of the bottom wall of the cover plate 700 ranges from 1 mm to 0.4 mm. For example, the thickness of the bottom wall of the cover plate 700 may be 1 mm, 0.9 mm, 0.8 mm, 0.7 mm, 0.6 mm, 0.5 mm, 0.4 mm, or the like. This reduces the wall thickness of the bottom wall of the cover plate 700, increasing the amplitude of the buzzer vibration. And can also increase the thickness of the circumference lateral wall of apron 700, increase the area of contact of circumference lateral wall and annular spacing body 2241 of apron 700, and make the circumference lateral wall of apron 700 can the butt between sound generating element 400 and buckle 2242 to carry out spacing installation to sound generating element 400 and apron 700, improve audible and visual alarm's stability in use and reliability.

Alternatively, the projection of the second mounting stand 223 is located in the limit stand 224 in a direction in which the front end portion of the lamp housing 200 faces the rear end portion of the lamp housing 200. That is, the annular extending inner diameter of the annular restraining body 2241 is larger than the annular extending inner diameter of the second mounting table 223. In this way, the cover 700 is disposed at the rear side of the sound emitting element 400, and the sound emitting element 400 is disposed in the resonance chamber defined by the cover 700 and the second cover 220.

Optionally, the second mounting table 223 is disposed in a step shape with the annular stop body 2241.

In some alternative embodiments, as shown in fig. 2, fig. 4 and fig. 5, one or more third mounting platforms 225 are further protruding from the inner side wall of the second cover 220 towards the direction of the first cover 210, the circuit board 600 is connected to the third mounting platforms 225, and the light emitting element 500 is disposed on the circuit board 600.

In this embodiment, a third mounting stand 225 is further protruding from the inner side wall of the second cover 220 toward the first cover 210, and the third mounting stand 225 is connected to the circuit board 600 to fix the circuit board 600.

When the number of the third mounting bases 225 is plural, the plurality of third mounting bases 225 are disposed at intervals in a ring shape, and the projection of the stopper base 224 is positioned in the ring shape of the plurality of third mounting bases 225 at intervals in the direction from the front end portion of the globe 200 toward the rear end portion of the globe 200. In this way, the waterproof sound-transmitting membrane 300, the sound-emitting element 400, the light-emitting element 500, and the circuit board 600 are disposed in this order in the direction from the front end portion of the lamp housing 200 toward the rear end portion of the lamp housing 200. The light emitting element 500 is disposed on a side of the circuit board 600 facing the sound emitting element 400.

Further, the light emitting element 500 includes one or more light-emitting diodes (LEDs).

Alternatively, in the case where the number of LEDs is plural, the plural LEDs are sequentially arranged in a ring shape. In a direction from the front end of the lamp housing 200 toward the rear end of the lamp housing 200, the projections of the plurality of LEDs are located in a ring shape in which the plurality of third mounting stages 225 are arranged at intervals.

Further, the projection of the stopper 224 is located in a ring shape where a plurality of LEDs are arranged at intervals in a direction in which the front end portion of the lamp housing 200 faces the rear end portion of the lamp housing 200. This reduces the occurrence of the case where the cover plate 700 and the sound emitting element 400 block the LEDs, thereby improving the brightness of the audible and visual alarm device and improving the alarm effect of the audible and visual alarm device.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An audible and visual alarm, comprising:

a housing;

the lampshade is connected with the shell, and the front end part of the lampshade is provided with an acoustic transmission opening;

the waterproof sound-transmitting membrane is arranged in the lampshade;

the alarm component is arranged in the lampshade and comprises a sound generating element and a light emitting element;

the circuit board is arranged in the lampshade, and the sounding element and the luminous element are connected with the circuit board;

wherein, along the direction of the preceding tip towards the rear end of lamp shade, waterproof sound-transmitting membrane, sound generating element, light emitting element and circuit board set gradually.

2. The audible and visual alarm according to claim 1, wherein,

the casing includes preceding shell and backshell, and preceding shell and backshell are limited to have the inner space, and preceding shell is equipped with the opening, and the lamp shade includes first cover body and second cover body, and first cover body is connected with the second cover body, and first cover body is located the inner space, and the second cover body passes the opening and is located the casing outside.

3. An audible and visual alarm according to claim 2, wherein,

the inside wall of the second cover body is convexly provided with a first mounting table towards the direction of the first cover body, the first mounting table extends in an annular shape, the projection of the sound-transmitting opening is positioned in the first mounting table along the direction of the front end part of the lampshade towards the rear end part of the lampshade, and the waterproof sound-transmitting membrane is connected with the first mounting table.

4. An audible and visual alarm according to claim 2, wherein,

the inside wall of the second cover body is also convexly provided with a second mounting table towards the direction of the first cover body, the second mounting table extends in an annular shape, and the sounding element is connected with the second mounting table.

5. The audible and visual alarm device according to claim 4, wherein the inner side wall of the second housing further protrudes toward the first housing to form a stop, the stop comprising an annular stop body and a buckle, the audible and visual alarm device further comprising:

the circumference lateral wall of apron is connected with annular spacing body, and the one end and the buckle of apron are connected, and the other end and the sound element butt of apron, and the apron is limited with partial second cover body and is had the resonance chamber, and the sound element is located the resonance intracavity.

6. An audible and visual alarm according to claim 2, wherein,

one or more third mounting tables are further arranged on the inner side wall of the second cover body in a protruding mode in the direction of the first cover body, the circuit board is connected with the third mounting tables, and the light-emitting elements are arranged on the circuit board.

7. An audible and visual alarm according to claim 2, wherein,

the two ends of the first cover body are respectively abutted between the front shell and the rear shell.

8. The audible and visual alarm device of claim 7, further comprising:

the sealing ring is pressed between the first cover body and the rear shell.

9. An audible and visual alarm according to any one of claims 1 to 8, wherein,

the material of part or all of the lampshade comprises transparent materials.

10. An audible and visual alarm according to any one of claims 1 to 8, wherein,

the sound generating element comprises a buzzer; and/or the number of the groups of groups,

the light emitting element comprises one or more light emitting diodes.