CN114157786B

CN114157786B - Video camera

Info

Publication number: CN114157786B
Application number: CN202111437645.8A
Authority: CN
Inventors: 朱帅帅; 田伟
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-09-29
Anticipated expiration: 2041-11-29
Also published as: CN114157786A

Abstract

The application provides a camera. The video camera includes: the camera comprises a camera shell, a lens assembly and a loudspeaker assembly, wherein the camera shell is provided with a containing cavity and a sound leakage hole; the lens component is accommodated in the accommodating cavity; the loudspeaker assembly is accommodated in the same accommodating cavity with the lens assembly, the loudspeaker assembly comprises a loudspeaker shell and a loudspeaker, the loudspeaker shell is provided with a loudspeaker cavity and a sound outlet hole, the sound outlet hole is communicated with the loudspeaker cavity and the sound outlet hole, the loudspeaker is accommodated in the loudspeaker cavity and comprises a vibrating diaphragm, the vibrating diaphragm faces the sound outlet hole and is positioned in a space communicated with the sound outlet hole, the loudspeaker shell is in sealing joint with the camera shell, and a sealing joint surface surrounds the sound outlet hole and the sound outlet hole. According to the camera provided by the application, the lens component and the loudspeaker component are arranged in the same cavity, so that the pressure difference between the inside and the outside of the vibrating diaphragm of the loudspeaker component is avoided, and the normal use of the loudspeaker is ensured.

Description

Video camera

Technical Field

The present application relates to electronic devices, and more particularly, to a camera.

Background

For satisfying different service scenes, part camera is equipped with the speaker, and current speaker is direct to be fixed inside the camera cavity, and inside and outside not communicate of speaker vibrating diaphragm, on the other hand is waterproof for the electronic component that makes the camera, and camera shell often the leakproofness is good, leads to the camera to work after a period in succession, along with the inside temperature of camera can rise, and the inside atmospheric pressure of camera increases, leads to inside and outside pressure differential that exists of speaker vibrating diaphragm, and the vibrating diaphragm vibration is influenced to make the speaker unable sound of normally making.

Disclosure of Invention

The application provides a camera, which can avoid the pressure difference between the inside and the outside of a loudspeaker vibrating diaphragm and ensure the normal use of the loudspeaker.

The present application provides a camera mounting assembly comprising: a camera housing provided with a receiving cavity and a sound release hole; the lens component is accommodated in the accommodating cavity;

the loudspeaker assembly is contained in the same containing cavity with the lens assembly, the loudspeaker assembly comprises a loudspeaker shell and a loudspeaker, the loudspeaker shell is provided with a loudspeaker cavity and a sound outlet hole, the sound outlet hole is communicated with the loudspeaker cavity and the sound outlet hole, the loudspeaker is contained in the loudspeaker cavity and comprises a vibrating diaphragm, the vibrating diaphragm faces the sound outlet hole and is located in a space communicated with the sound outlet hole, the loudspeaker shell is in sealing joint with the camera shell, and a sealing joint surface surrounds the sound outlet hole and the sound outlet hole.

According to the camera of some embodiments of the application, the sound outlet is communicated with the speaker cavity and the sound leakage hole, so that pressure difference between the inside and the outside of the speaker vibrating membrane can not occur, and normal use of the speaker is ensured.

Further, the camera housing includes a first side wall formed with the sound emission hole, a support boss protruding and provided around the sound emission hole is formed on an inner side surface of the first side wall, the speaker housing is in sealing engagement with the support boss, the speaker housing includes a second side wall formed with the sound emission hole, the first side wall and the second side wall are opposite in respective thickness directions, and an engagement surface of the speaker housing and the support boss forms the sealing engagement surface.

Further, the second side wall is provided with a vibrating diaphragm hole, and the vibrating diaphragm is exposed at the vibrating diaphragm hole and is opposite to the sound leakage hole.

Further, the speaker assembly further comprises a waterproof and breathable film in sealing connection with the outer edge of the sound outlet hole, and the waterproof and breathable film is surrounded by the sealing joint surface.

Further, the inner surface of the first side wall is further formed with a fixing portion and a positioning portion protruding in the same direction as the supporting boss, the loudspeaker shell further comprises a fixing matching portion matched with the fixing portion and a positioning matching portion matched with the positioning portion, the positioning portion is matched with the positioning matching portion in a positioning mode, and the fixing portion is fixedly connected with the fixing matching portion.

Further, the fixing parts are provided with a plurality of fixing parts and at least comprise a first fixing part and a second fixing part, and the first fixing part and the second fixing part are arranged at 180-degree intervals on the periphery of the supporting boss.

Further, the locating parts are provided with a plurality of locating parts and at least comprise a first locating part and a second locating part, and the first locating part and the second locating part are arranged at 180-degree intervals on the periphery of the supporting boss.

Further, the support boss is an oval boss, and the first fixing portion and the second fixing portion are oppositely arranged along the long axis direction of the oval boss.

Further, the positioning portion comprises a positioning column, the fixing portion comprises a connecting column, the camera housing comprises a fixing lug protruding outwards from the outer surface, the positioning matching portion comprises a positioning hole formed in the fixing lug, the positioning column is inserted into the positioning hole to be matched in a positioning mode, and the fixing lug is supported by the connecting column and fixedly connected with the positioning column.

Further, the support boss with one of the speaker housings is provided with a seal groove, the camera further includes a seal ring assembled in the seal groove and clamped between the support boss and the speaker housing, the seal ring surrounding the sound outlet hole and the sound leakage hole.

Further, the speaker shell comprises a speaker front shell and a speaker rear shell which are arranged in a split mode and are in sealing connection, the speaker front shell and the speaker rear shell jointly enclose a speaker cavity, the sound outlet is formed in the speaker front shell, and the speaker rear shell is provided with a wire outlet for the speaker to be wire-out and a glue dispensing groove which is arranged around the wire outlet.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

FIG. 1 is an exploded isometric view of a camera housing and speaker assembly shown in an exemplary embodiment;

FIG. 2 is a cross-sectional view of the camera housing and speaker assembly shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of the camera housing and speaker assembly of FIG. 2;

FIG. 4 is an enlarged view of a portion of the camera housing and speaker assembly of FIG. 3;

FIG. 5 is a top view of a camera housing shown in an exemplary embodiment;

fig. 6 is a top view of a speaker front housing of a speaker assembly shown in an exemplary embodiment;

fig. 7 is a schematic perspective view of a speaker assembly shown in an exemplary embodiment;

fig. 8 is a cross-sectional view of a speaker assembly shown in an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Fig. 1 is an exploded perspective view of a camera housing 2 and speaker assembly 4 shown in an exemplary embodiment. The present application provides a camera 1 comprising: a camera housing 2, a lens assembly (not shown) and a speaker assembly 4. Referring to fig. 1, a camera housing 2 is provided with a receiving cavity 21 and a sound release hole 22. The lens assembly and the speaker assembly 4 are accommodated in the accommodating chamber 21. The sound release hole 22 penetrates through one side wall of the camera housing 2 and is communicated with the outside, and sound emitted by the loudspeaker assembly 4 can be transmitted outwards through the sound release hole 22.

Fig. 2 is a cross-sectional view of the camera housing 2 and speaker assembly 4; fig. 3 is an enlarged view of a portion of the camera housing 2 and speaker assembly 4 shown in fig. 2; fig. 4 is an enlarged view of a portion of the camera housing 2 and speaker assembly 4 shown in fig. 3. Referring to fig. 2, the speaker assembly 4 includes a speaker housing 41 and a speaker 42 disposed in the speaker housing 41, the speaker housing 41 is sealingly engaged with the camera housing 2 in the housing chamber 21, the sealing engagement surface of the speaker housing 41 and the camera housing 2 surrounds the sound release hole 22, the housing chamber 21 is sealed from the sound release hole 22, the housing chamber 21 is formed as a sealed chamber, and is not in communication with the outside, and only the sound release hole 22 is in communication with the outside.

The speaker housing 41 is provided with a speaker chamber 43 and a sound outlet 44, the speaker 42 is accommodated in the speaker chamber 43, and includes a diaphragm 45, and the diaphragm 45 faces the sound outlet 22 and is located in a space communicating with the sound outlet 22. The sound outlet hole 44 communicates the speaker chamber 43 with the sound release hole 22, and the sealing joint surface of the speaker housing 41 and the camera housing 2 surrounds the sound outlet hole 44.

According to the above description, the lens assembly and the speaker assembly 4 are arranged in the same cavity, and an independent cavity is not required to be arranged for the speaker assembly 4, so that the number of parts can be reduced, the mounting structure is simplified, and the cost is reduced. In addition, since the sealing joint surface of the speaker housing 41 and the camera housing 2 surrounds the sound leakage hole 22 and the sound outlet hole 44, the accommodating cavity 21 is formed into a sealing cavity, and the sound outlet hole 44 is communicated with the sound leakage hole 22 and the speaker cavity 43, so that no pressure difference is ensured between the inside and outside of the diaphragm 45 and the outside atmosphere, the diaphragm 45 can normally make sound, and the speaker 42 can normally work.

Referring to fig. 3 to 4, in some embodiments, the camera housing 2 includes a first side wall 51 formed with the sound emission hole 22, a support boss 53 protruding from an inner side surface of the first side wall 51 and disposed around the sound emission hole 22, the speaker housing 41 is sealingly engaged with the support boss 53, the speaker housing 41 includes a second side wall 52 formed with the sound emission hole 44, the first side wall 51 and the second side wall 52 are opposite to each other in a respective thickness direction, and an engagement surface 54 of the speaker housing 41 and the support boss 53 forms a sealing engagement surface surrounding the sound emission hole 44 and the sound emission hole 22. The support boss 53 is provided to leave a gap between the speaker 42 and the camera housing 2, which gap can form a front sound chamber in front of the diaphragm 45, facilitating transmission of sound. In addition, the first side wall 51 and the second side wall 52 are opposite to facilitate communication between the sound release hole 22 and the sound outlet hole 44, and facilitate sealing engagement of the speaker housing 41 and the camera housing 2. The sound release holes 22 may be a plurality of holes concentrated and uniformly distributed on the first side wall 51. To further ensure the tightness of the sealing interface of the speaker housing 41 and the camera housing 2, in some embodiments, one of the support boss 53 and the speaker housing 41 is provided with a seal groove 531, and the camera 1 further includes a seal ring 532, where the seal ring 532 is assembled to the seal groove 531 and clamped between the support boss 53 and the speaker housing 41, and the seal ring 532 surrounds the sound outlet 44 and the sound outlet 22 to enhance the sealing effect.

The speaker assembly 4 further comprises a waterproof and breathable membrane 441 connected to the outer edge of the sound outlet hole 44 in a sealing manner, the waterproof and breathable membrane 441 can achieve waterproof and breathable performance at the sound outlet hole 44, and the sealing ring 532 should be enclosed on the outer side of the waterproof and breathable membrane 441, that is, enclosed by the sealing joint surface. Due to the water resistance of the waterproof and breathable film 441, when the sound release hole 22 is filled with water, the water does not flow into the speaker chamber 43 from the sound release hole 44 to damage the speaker 42. Because of the air permeability of the waterproof and breathable film 441, the communication between the speaker cavity 43 and the outside air pressure can be realized, the air pressure of the inner side and the outer side of the diaphragm 45 is equal, the normal use of the speaker 42 of the camera 1 is ensured, and on the other hand, the waterproof of the speaker 42 can be realized.

In some embodiments, the seal ring 532 may have a cross-sectional structure similar to an "n" shape, where the seal ring 532 protrudes out of the seal groove 531 by a certain height, and the seal ring 532 has a certain amount of interference with the support boss 53, and there is a certain amount of interference between the seal ring 532 and the seal groove 531, so that the state of the seal ring 532 after being installed is ensured to be stable, and is not easily touched by mistake.

In order to ensure that the diaphragm 45 can normally sound, the second side wall 52 is provided with a diaphragm hole 520, and the diaphragm 45 is exposed at the diaphragm hole 520 and is opposite to the sound leakage hole 22. In this way, the sound generated after the vibration of the diaphragm 45 can be directly transmitted out through the sound release hole 22, so as to shorten the propagation path of the sound.

Fig. 5 is a top view of the camera housing 2; fig. 6 is a top view of the speaker front housing 411 of the speaker assembly 4. Referring to fig. 5 to 6, and referring to fig. 1 to 2, in some embodiments, the speaker assembly 4 needs to be fixedly connected to the camera housing 2, the inner surface of the first side wall 51 is further formed with a fixing portion 61 and a positioning portion 62 protruding in the same direction as the supporting boss 53, the speaker housing 41 further includes a fixing mating portion 63 mated with the fixing portion 61 and a positioning mating portion 64 mated with the positioning portion 62, the positioning portion 62 is mated with the positioning mating portion 64, and the fixing portion 61 is fixedly connected to the fixing mating portion 63. In this way, the fixing portion 61 can ensure the fixed connection between the speaker assembly 4 and the camera housing 2, and the positioning portion 62 can accurately position the mounting position of the speaker assembly 4, so as to ensure the normal use of the speaker assembly 4 of the camera 1 of the present application.

In some embodiments, the fixing portion 61 further includes a fixing member 65, and the mounting step of the speaker assembly 4 to the camera housing 2 is: 1. aligning the positioning portion 62 with the positioning mating portion 64, and accurately placing the speaker assembly 4 on the camera housing 2 by the positioning action of the positioning portion 62, at which time the fixing portion 61 is aligned with the fixing mating portion 63; 2. the second side wall 52 of the speaker assembly 4 is pressed against the sealing ring 532, the fixing part 61 and the fixing mating part 63 are connected by the fixing member 65, the speaker front housing 411 and the sealing ring 532 together with the camera housing 2 constitute the front sound chamber 46, and the sound release hole 22, the sound output hole 44 and the waterproof and breathable film 441 are located in the front sound chamber 46.

Referring to fig. 5, in some embodiments, the fixing portion 61 includes a plurality of fixing portions 611 and a second fixing portion 612, and the first fixing portion 611 and the second fixing portion 612 are disposed 180 ° apart from each other at the periphery of the supporting boss 53. Thus, the first fixing portion 611 is spaced apart from the second fixing portion 612 by a relatively long distance, and the connection stability is good. In some embodiments, the positioning portion 62 is provided in plurality and includes at least a first positioning portion 621 and a second positioning portion 622, and the first positioning portion 621 and the second positioning portion 622 are disposed 180 ° apart from each other at the periphery of the support boss 53. Thus, the first positioning portion 621 and the second positioning portion 622 are spaced far apart from each other, and positioning accuracy is good.

In this embodiment, the support boss 53 is an elliptical boss, and the first fixing portion 611 and the second fixing portion 612 are disposed opposite to each other along the major axis direction of the elliptical boss. The long axial distance is longer, so that the distance of the first fixing portion 611 and the second fixing portion 612 can be further increased. The first positioning portion 621 and the second positioning portion 622 may be disposed opposite to each other in the major axis direction of the elliptical boss.

In some embodiments, the positions and the number of the fixing portions 61 and the positioning portions 62 may be selectively set according to the shapes of the camera housing 2 and the speaker housing 41. The fixing engaging portion 63 is provided corresponding to the fixing portion 61, and the positioning engaging portion 64 is provided corresponding to the positioning portion 62.

Referring to fig. 1 and 5-6, in some embodiments, the positioning portion 62 includes a positioning post 623, the fixing portion 61 includes a connecting post 613, the camera housing 2 includes a fixing lug 633 protruding outwards from an outer surface, the positioning mating portion 64 includes a positioning hole 643 formed in the fixing lug 633, the positioning post 623 is inserted into the positioning hole 643 for positioning mating, and the fixing lug 633 is supported on the connecting post 613 and fixedly connected with the positioning post 623. For example, can be fixedly connected by screws. In this way, the speaker assembly 4 is firmly fixed to the camera housing 2. In the illustrated embodiment, the length of the positioning posts 623 and the connecting posts 613 is approximately half the height of the speaker assembly 4, i.e., the speaker housing 41 is fixed in an intermediate position, so that a stable fixation can be achieved. In some embodiments, the relative heights of the connecting posts 613 and seal groove 531 are consistent with the relative heights of the securing ears 633 and second side walls 52 to ensure a good seal when the speaker assembly 4 is installed. In other embodiments, the positioning portion 62 and the fixing portion 61 may have other structures, such as a buckle, to ensure that the speaker housing 41 is fixedly connected with the camera housing 2.

Fig. 7 is a perspective view of the speaker assembly 4; fig. 8 is a cross-sectional view of the speaker assembly 4. Referring to fig. 7 to 8, in some embodiments, the speaker housing 41 includes a speaker front housing 411 and a speaker rear housing 412 that are separately disposed and sealed, the speaker front housing 411 and the speaker rear housing 412 together enclose a speaker chamber 43, and the sound outlet 44 is formed in the speaker front housing 411. The speaker 42 is installed by first opening the speaker rear case 412; 2. put into the speaker 42; 3. closing the speaker rear case 412; 4. the speaker front case 411 and the speaker rear case 412 are hermetically connected. As such, the speaker assembly 4 of the present application is simple to install and easy to repair. In some embodiments, the front speaker housing 411 is further provided with a sealant slot 413 at the joint with the rear speaker housing, and the sealing manner between the front speaker housing 411 and the rear speaker housing 412 is dispensing, that is, glue is filled in the sealant slot 413, and the sealing effect can be achieved after solidification, and in other embodiments, the sealing manner can be a rubber ring or other manners. In this way, the sealing performance of the speaker housing 41 can be ensured on the premise that the speaker 42 is easy to install, and in addition, the speaker rear case 412 can protect and fix the speaker 42 to some extent.

In some embodiments, since the speaker 42 is provided with speaker connection wires 414 to connect with other components of the camera 1, the speaker rear housing 412 is provided with a wire outlet 4121 through which the speaker 42 is wire-out and a glue dispensing slot 4122 disposed around the wire outlet 4121. In this way, the speaker connection wire 414 passes through the speaker housing 41 from the outlet 4121, and the glue dispensing groove 4122 is filled with glue to ensure the sealing performance at the outlet 4121. In other embodiments, if the speaker 42 is a wireless speaker 42, the outlet 4121 may not be provided and the speaker rear housing 412 is a complete structure.

After the camera 1 is installed, the camera housing 2, the sealing ring 532, the speaker front housing 411 and the speaker rear housing 412 make the lens assembly in a completely sealed environment, and in addition, the dispensing slot 4122 is designed due to the position of the outlet 4121 of the speaker rear housing 412. The sealing glue grooves 413 are also designed at the parting positions of the front shell and the rear shell of the loudspeaker 42, and are filled with sealing glue, so that the containing cavity 21 of the camera 1 has good sealing property, the air pressure inside the camera 1 is ensured not to influence the loudspeaker 42, and the whole protection level of the camera 1 can reach over IP 66.

Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A video camera, comprising:

a camera housing provided with a receiving cavity and a sound release hole;

the lens component is accommodated in the accommodating cavity;

the loudspeaker assembly and the lens assembly are accommodated in the same accommodating cavity, the loudspeaker assembly comprises a loudspeaker shell and a loudspeaker, the loudspeaker shell is provided with a loudspeaker cavity and a sound outlet hole, the sound outlet hole is communicated with the loudspeaker cavity and the sound outlet hole, the loudspeaker is accommodated in the loudspeaker cavity and comprises a vibrating diaphragm, the vibrating diaphragm faces the sound outlet hole and is positioned in a space communicated with the sound outlet hole, the loudspeaker shell is in sealing joint with the camera shell, and a sealing joint surface surrounds the sound outlet hole and the sound outlet hole;

the loudspeaker assembly further comprises a waterproof and breathable film connected to the outer edge of the sound outlet hole;

the camera shell comprises a first side wall provided with the sound discharging hole, the loudspeaker shell comprises a second side wall provided with the sound discharging hole, the first side wall and the second side wall are opposite in the respective thickness directions, the second side wall is provided with a vibrating diaphragm hole, and the vibrating diaphragm is exposed at the vibrating diaphragm hole and is opposite to the sound discharging hole.

2. The camera of claim 1, wherein an inner side surface of the first sidewall is formed with a support boss protruding and disposed around the sound release hole, the speaker housing being in sealing engagement with the support boss, the speaker housing and the support boss engaging surface forming the sealing engaging surface.

3. The camera of claim 2, wherein the waterproof breathable film is surrounded by the sealing interface.

4. The camera of claim 2, wherein the inner surface of the first sidewall is further formed with a fixing portion and a positioning portion protruding in the same direction as the support boss, the speaker housing further includes a fixing engagement portion engaged with the fixing portion and a positioning engagement portion engaged with the positioning portion, the positioning portion is in positioning engagement with the positioning engagement portion, and the fixing portion is fixedly connected with the fixing engagement portion.

5. The camera of claim 4, wherein the plurality of fixing portions includes at least a first fixing portion and a second fixing portion, the first fixing portion and the second fixing portion being disposed at a 180 ° interval from each other at the outer periphery of the support boss; and/or

The locating parts are provided with a plurality of locating parts and at least comprise a first locating part and a second locating part, and the first locating part and the second locating part are arranged at 180-degree intervals on the periphery of the supporting boss.

6. The camera of claim 5, wherein the support boss is an elliptical boss, and the first fixing portion and the second fixing portion are disposed opposite to each other along a major axis direction of the elliptical boss.

7. The camera of claim 4, wherein the positioning portion includes a positioning post, the fixing portion includes a connecting post, the camera housing includes a fixing lug protruding outward from an outer surface, the positioning engaging portion includes a positioning hole formed in the fixing lug, the positioning post is inserted into the positioning hole to be positioned and engaged, and the fixing lug is supported by the connecting post and fixedly connected with the positioning post.

8. The camera of claim 2, wherein one of the support boss and the speaker housing is provided with a seal groove, the camera further comprising a seal ring assembled to the seal groove and clamped between the support boss and the speaker housing, the seal ring surrounding the sound outlet and the sound outlet.

9. The camera of claim 1, wherein the speaker housing comprises a speaker front housing and a speaker rear housing that are separately provided and are in sealing engagement, the speaker front housing and the speaker rear housing together enclose the speaker cavity, the sound outlet is provided in the speaker front housing, and the speaker rear housing is provided with an outlet for the speaker to be outgoing and a dispensing slot provided around the outlet.