CN216134557U - Bar loudspeaker and display device comprising bar loudspeaker - Google Patents

Abstract

The utility model provides a bar sound box and a display device comprising the bar sound box, wherein the bar sound box comprises: the shell is in a long strip shape, and a left sound cavity and a second cavity are arranged in the shell at intervals along the length direction of the shell; the phase inverter tube is arranged in the second cavity; the phase-reversing pipe comprises a hollow cylindrical pipe body and rib plates integrally formed on the periphery of the pipe body; the pipe body extends along the length direction of the shell, the periphery of the rib plate is tightly attached to the inner wall of the second cavity along the circumferential direction, and the second cavity is divided into a bass cavity and a right sound cavity which are independent; the bass cavity is positioned between the left sound cavity and the right sound cavity; and a pipe orifice at one end of the phase reversal pipe is communicated with the bass cavity, and a pipe orifice at the other end of the phase reversal pipe is communicated with the outside, so that the bass cavity is communicated with the outside space, the phases of the internal sound wave and the external sound wave are the same, and the bass effect is enhanced.

Description

Bar loudspeaker and display device comprising bar loudspeaker

Technical Field

The utility model relates to the field of sound equipment, in particular to a bar-shaped sound box and display equipment comprising the bar-shaped sound box.

Background

According to the Soundbar sound box, the functions of sound boxes with a plurality of sound channels are integrated in a strip-shaped cavity in the box body, each channel is provided with an independent cavity, and good isolation and separation are guaranteed. As a new sound product, the Soundbar bar sound box can be connected with a horizontal panel television such as a liquid crystal television, a plasma television and the like, can also be connected with a set top box, and can also be wirelessly connected with other playing devices.

Different from the traditional sound equipment, the Soundbar is used in a transverse arrangement mode. Moreover, Soundbar emphasizes on matching the size of the liquid crystal display television in the shape size, can be placed on a base of the television, can be hung on a wall together with the television, and has higher harmony with the liquid crystal display television in the visual aspect.

Along with audio equipment becomes more than indispensable thing of modern family amusement equipment gradually, in order to pursue better sound effect, have some Soundbar product integration to have the bass unit at present to promote tone quality. However, the bass unit has a large caliber, so that the Soundbar becomes large in volume and heavy. This is not in accordance with the requirement of small occupied space required by the overall size of Soundbar, and if the volume is reduced, the bass effect is affected. Therefore, how to combine the Soundbar and the bass sound to eliminate the defects of large occupied space and poor bass effect becomes a difficult point which needs to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bar-type sound box, which can meet the requirements of small overall size and good bass effect of the sound box.

The utility model aims to provide a display device which is provided with the bar-shaped sound box.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a soundbar, comprising: the shell is in a long strip shape, and a left sound cavity and a second cavity are arranged in the shell at intervals along the length direction of the shell; the phase inverter tube is arranged in the second cavity; the phase-reversing pipe comprises a hollow cylindrical pipe body and rib plates integrally formed on the periphery of the pipe body; the pipe body extends along the length direction of the shell, the periphery of the rib plate is tightly attached to the inner wall of the second cavity along the circumferential direction, and the second cavity is divided into a bass cavity and a right sound cavity which are independent; the bass cavity is positioned between the left sound cavity and the right sound cavity; and a pipe orifice at one end of the phase reversal pipe is communicated with the bass cavity, and a pipe orifice at the other end of the phase reversal pipe is communicated with the outside.

According to one aspect of the utility model, a part of the inverter tube is located in the bass chamber, and a nozzle at the other end of the inverter tube abuts against an end wall of the casing and is communicated with the outside.

According to one aspect of the utility model, a through hole is arranged on the end wall of the shell in a penetrating way, the shape and the size of the through hole are matched with the shape of the nozzle of the inverter tube, and the through hole is communicated with the inverter tube.

According to one aspect of the utility model, the end wall of the shell is further provided with a plurality of screw holes, and the screw holes surround the through hole; the pipe orifice of the inverter pipe is provided with a protruding annular flange, and a hollow cylindrical stud is formed on the surface of the flange; the flange is attached to the end wall of the shell, and the stud and the screw hole are opposite to each other and are penetrated by a matched screw.

According to one aspect of the utility model, the pipe body comprises a first pipe section, a middle pipe section and a second pipe section which are sequentially connected along the length direction; the caliber of the first pipe section is gradually increased in the direction far away from the middle pipe section, and the caliber of the second pipe section is gradually increased in the direction far away from the middle pipe section; the pipe orifice of the first pipe section is positioned in the bass cavity, the second pipe section is positioned in the right sound cavity, and the pipe orifice of the second pipe section is abutted against the end wall of the shell and communicated with the outside.

According to an aspect of the utility model, the bass chamber has a length that is greater than a length of the left sound chamber and a length of the right sound chamber, respectively.

According to one aspect of the utility model, a horn sound outlet is arranged on one side wall of the shell in the right sound cavity; the rib plate is positioned on one side of the sound outlet of the loudspeaker and extends obliquely towards the direction close to the bass cavity.

According to one aspect of the utility model, the shell is bent along the upper end of the inner wall of at least one side in the length direction to form a clamping groove, and the side edge of the rib plate is provided with a protruding clamping protrusion; when the side edge of the rib plate abuts against the inner wall of the shell, the clamping protrusion is contained in the clamping groove.

According to one aspect of the utility model, the upper end of the rib plate is provided with a wire passing hole.

According to one aspect of the utility model, the rib plate is protrusively provided with a connecting plate extending out along the horizontal direction, and the connecting plate is provided with a connecting hole; the bottom wall of the shell is provided with a hollow cylindrical stud which protrudes upwards, and the stud and the connecting hole are opposite up and down for a screw to penetrate through, so that the phase inversion pipe is fixed in the shell.

According to one aspect of the utility model, the tubular body comprises a first half shell and a second half shell which are opposite to each other in the axial direction of the tubular body, wherein the first half shell and the second half shell are semi-annular and can be spliced into a whole in a clamping mode.

According to one aspect of the present invention, two protruding strips extending in the axial direction are respectively protruded from two side edges of the opening of the first half shell, and the two protruding strips are relatively parallel; the edges of two sides of the opening of the second half shell are respectively provided with a groove extending along the axial direction in a concave mode, and the convex strips are correspondingly contained in the grooves.

According to one aspect of the utility model, a plurality of axially spaced locating holes are provided in each side edge of the first half shell, the locating holes being located on the outside of the ribs; and a plurality of positioning bulges which are spaced along the axial direction are arranged on each side edge of the second half shell in a protruding mode, and the positioning bulges are arranged in the positioning holes in a penetrating mode.

According to one aspect of the utility model, the rib comprises two plate members integrally formed on the first half shell and the second half shell, respectively, and each plate member is perpendicular to the axial direction of each half shell.

According to an aspect of the present invention, the inverter tube further includes a plurality of reinforcing ribs arranged at intervals in a circumferential direction of the tube body; the reinforcing ribs are connected to the pipe body and the rib plates.

The utility model also provides a display device, which comprises a display main body and the bar-shaped sound box; the bar-shaped sound box is horizontally arranged and located at the bottom or two sides of the display main body, and the bar-shaped sound box is electrically connected with the display main body.

According to the technical scheme, the bar-shaped sound box provided by the utility model at least has the following advantages and positive effects:

the inverter tube can be used as a functional part and a sealing structure. Specifically, the phase reversal pipe comprises a pipe body and a rib plate which is integrally formed on the periphery of the pipe body, the rib plate is tightly attached to the inner wall of the second cavity along the circumferential direction, and the second cavity is divided into a bass cavity and a right sound cavity which are independent. The phase inverter tube can be used as a baffle plate to realize the separation of the sound cavity, and the installation and the disassembly are convenient. And, the paraphase pipe strides and locates bass chamber and right sound chamber, has used the volume of two sound chambers simultaneously, compares in traditional mounting means of placing the paraphase pipe alone at the bass chamber, can reduce the length in bass chamber under the size that does not reduce bass unit, do not influence the prerequisite of bass effect, has reduced the length of casing promptly, and then reduces occuping of bar audio amplifier volume. And the pipe orifice of one end of the phase reversal pipe is communicated with the bass cavity, and the pipe orifice of the other end is communicated with the outside, so that the bass cavity is communicated with the outside space, the phases of the internal sound wave and the external sound wave are the same, and the bass effect is enhanced.

Drawings

Fig. 1 is a schematic view of the overall structure of a display device in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the soundbar of fig. 1.

Fig. 3 is a schematic view of the interior of the enclosure of the soundbar of fig. 2.

FIG. 4 is a schematic diagram of an inverter tube mounted in a housing according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating the structure of an inverter according to an embodiment of the present invention.

Fig. 6 is an enlarged view of fig. 4 at a.

Fig. 7 is a schematic view of the snap fit of the shell and the rib plate in the embodiment of the utility model.

FIG. 8 is a schematic diagram of the first half-shell of an inverter tube according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of the second half-shell of an inverter tube according to an embodiment of the present invention.

The reference numerals are explained below:

1000-display device, 200-display body,

100-bar-shaped sound box,

1-shell, 11-left sound cavity, 12-second cavity, 121-bass cavity, 122-right sound cavity, 101-horn sound outlet, 102-through hole, 103-screw hole, 104-clamping groove,

2-inverter tube, 21-tube body, 211-first half shell, 212-second half shell, 213-convex strip, 214-groove, 215-positioning hole, 216-positioning projection, 22-rib plate, 221-plate, 23-flange, 24-stud, 25-connecting plate, 26-convex strip, 271-first tube section, 272-middle tube section, 273-second tube section, 28-reinforcing rib, 201-line passing hole, 202-connecting hole,

3-high pitch horn,

4-woofer,

5-power panel,

6-power amplifier board.

Detailed Description

Exemplary embodiments that embody features and advantages of the utility model are described in detail below in the specification. It is to be understood that the utility model is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the utility model and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

This embodiment provides a bar audio amplifier and includes bar audio amplifier's display device, bar audio amplifier through with display device electric connection to be applied to the audio system of multichannel, can guarantee better bass effect in, still satisfied bar audio amplifier small, lightweight demand, do benefit to bar audio amplifier and put more freely, the practicality is strong.

The sound bar of the present invention will be described in detail below with reference to embodiments. With the display device provided by the present invention, it can be formed by combining the sound bar and the display main body in the following embodiments.

Referring to fig. 1, the display device 1000 of the present embodiment mainly includes a display main body 200 and a sound bar 100 electrically connected to the display main body 200. Wherein, the sound bar 100 is placed horizontally and is located at the bottom of the display main body 200, and certainly, the sound bar 100 can also be placed at the left and right sides of the display main body 200 and can be hung on a wall for playing music.

Specifically, the display main body 200 has a display screen for displaying images, and a sound system is built in the display main body, and is an input/output playing device for video and audio. Therefore, the display main body 200 is not limited to a television such as a liquid crystal television or a plasma television, and may include other audio input devices having a display screen such as a computer. The display main body 200 includes a control main board, and a power interface, an external device interface, and the like electrically connected to the control main board. The external device interface is used for connecting the external equipment, so that the media asset data is sent to the external equipment.

The sound bar 100 serves as an external device having an audio output function. The sound bar 100 may be connected to the external device interface of the display main body 200 through a cable by a specific interface specification, such as HDMI, USB, or the like. For example, the sound bar 100 may be connected to the display main body 200 through a USB interface. When the display main body 200 needs to output audio, the audio data may be transmitted to the sound bar 100 through the USB interface, and the sound bar 100 converts the audio data into a sound signal to implement audio output.

Moreover, the sound bar 100 may perform sound quality processing on the audio transmitted by the display main body 200 to play the audio data according to a specific output mode, so as to obtain a corresponding sound quality effect. Therefore, the user can realize the control of the data processing function through interactive action, namely, the setting of the output mode is realized. For example, settings that the sound bar 100 can support include sound modes, surround switches, treble adjustments, bass adjustments, display screen brightness adjustments, factory reset settings, and the like.

In the present embodiment, soundbar 100 is designed as a 2.1 channel system with built-in subwoofers as a whole.

The 2.1 channel is the common 2.0 channel (two loudspeakers form the left and right channels) added with one subwoofer to form a third channel except the left and right channels. Since the current sound box tends to be light, bass reduction can be affected while the volume of the sound box is reduced. Therefore, the bass can compensate the bass loss caused by the reduction of the volume of the sound box and enhance the bass. In other embodiments, the sound bar 100 can be used in combination with other sound devices to form 5.1 channels and 7.1 channels according to the diversified requirements of users, so as to realize richer surround stereo.

The sound bar 100 integrates the left channel, the right channel, the subwoofer, the power board 5, the power amplifier board 4, the display board, etc. in a compact manner, so that the volume is minimized and the sound quality is improved to the maximum.

Referring to fig. 2 and fig. 3 together, the soundbar 100 of the present embodiment mainly includes a casing 1 and an inverter tube 2.

The housing 1 is elongated. When in use, the utility model is generally placed horizontally. For convenience of description, the direction of the view of fig. 2 is taken as "front" in the direction toward the user and "rear" in the direction away from the user, and the orientations are defined as "up, down, left, and right".

The interior of the housing 1 is spaced along its own length by a left acoustic chamber 11 and a second chamber 12.

The inverter tube 2 is built in the second chamber 12. The inverter tube 2 includes a hollow cylindrical tube body 21 and rib plates 22 integrally formed on the outer periphery of the tube body 21. The pipe body 21 extends along the length direction of the housing 1, and the periphery of the rib plate 22 is tightly attached to the inner wall of the second cavity 12 along the circumferential direction, so as to divide the second cavity 12 into a bass cavity 121 and a right sound cavity 122 which are independent.

The bass chamber 121 is closer to the left sound chamber 11 than the right sound chamber 122, and is centered with respect to the bass chamber 121 so as to be located between the left sound chamber 11 and the right sound chamber 122, thereby ensuring a bass effect.

The bass chamber 121 has a length greater than the length of the left sound chamber 11 and the length of the right sound chamber 122, respectively, i.e., the bass chamber 121 has the largest length, and the length thereof occupies almost two thirds of the entire length of the housing 1, so that the woofer 4 having a relatively large outer dimension can be placed.

As shown in fig. 3, the sound bar 100 further includes two tweeters 3 and one woofer 4.

A horn sound outlet (not shown) is formed in the bass chamber 121 at the bottom thereof, and the woofer 4 is fitted in the horn sound outlet to emit sound toward the bottom.

The casing 1 has a speaker sound hole 101 formed on the front side wall of the right sound cavity 122, and the casing 1 also has another speaker sound hole 101 formed symmetrically on the front side wall of the left sound cavity 11. Correspondingly, two tweeters 3 are respectively mounted to the horn sound outlet holes 101 in the left and right sound chambers 11 and 122 to emit sound toward the front.

Further, a part of the inverter tube 2 is located in the bass chamber 121, and a tube opening of the end is communicated with the bass chamber 121, and a tube opening of the other end is communicated with the outside, so that the bass chamber 121 is communicated with the outside space to generate sound outwards, thereby enhancing the bass effect.

Specifically, a through hole 102 is formed through the right end wall of the housing 1. The shape and size of the through hole 102 are matched with the shape of the nozzle of the inverter tube 2, and the cross section of the through hole 102 is approximately in a runway shape.

The right end orifice of inverter tube 2 is abutted against the right end wall of casing 1 and is opposite to through hole 102, so that inverter tube 2 is communicated with the external space, and the through hole 102 can also be called inverter hole.

The operating principle of the inverter tube 2 is as follows: one end of the inverter tube 2 is communicated with the air in the box, and the other end is communicated to the outside of the box through an inverter hole. When the diaphragm of the woofer 4 moves, on one hand, sound waves are directly radiated outwards, and on the other hand, the air in the box body is compressed or expanded, so that the air in the box body flows to the inverter hole to be discharged, and thus, the inverter hole becomes a second diaphragm of the vibrating air. Through ingenious design, the sound waves radiated to the outside from the back of the vibrating diaphragm are inverted for 180 degrees through the phase inversion pipe 2, so that the sound waves radiated from the phase inversion hole are in the same phase as the sound waves radiated from the front of the vibrating diaphragm, and the radiation in the same phase can enable sound energy to be superposed, so that the overall low-frequency response of the sound box can be enhanced.

In this embodiment, the inverter tube 2 can be used not only as a functional component but also as a sealing structure, thereby improving the sealing performance of the cavity. The inverter tube 2 is embodied as a functional component, and the inverter tube 2 plays a role of communicating the bass chamber 121 and the right sound chamber 122, so that the bass chamber 121 is communicated with an external space, the phases of internal sound waves and external sound waves are the same, and the bass effect is enhanced. The inverter tube 2 is embodied as a sealing structure, and the rib plate 22 on the inverter tube 2 can replace the traditional baffle plate to realize the separation of the sound cavity; moreover, the volume of the two sound cavities is simultaneously used by the inverter tube 2, compared with the traditional installation mode of independently placing the inverter tube 2 in the bass cavity 121, the length of the shell 1 can be reduced on the premise of not reducing the size of the bass unit and not influencing the bass effect, and the volume of the sound box is further reduced. Therefore, the sound bar 100 can be well used with a television, whether it is mounted on the base of the television or on a wall.

Referring to fig. 4, the sound bar 100 further includes a power panel 5 and a power amplifier panel 6.

The power board 5 is electrically connected to the power board 6 for supplying power to the power board 6. The power amplifier board 6 is provided with a control unit for controlling the sound production of the sound box, a signal input and conversion unit, and a plurality of audio input interface terminals. The power amplifier board 6 can be electrically connected to the main board of the display main body 200 through the audio input interface terminal. Specifically, the plurality of audio input interface terminals include a coaxial interface terminal, an optical fiber interface terminal, an analog audio input interface terminal, an HDMI input interface terminal, and the like. Accordingly, Soundbar 100 may support multiple communication modes. Specifically, the speaker box can support interface modes such as analog, optical fiber or coaxial cable, and the like, and is used for transmitting audio data, and simultaneously supports communication modes such as bluetooth, HDMI voice return (ARC), HDMI Input (IN) interface, and the like, and is used for transmitting an instruction related to audio.

The power panel 5 and the power amplification panel 6 are both arranged in the bass cavity 121 and are positioned at the left side and the right side of the woofer 4, so that the bass loudspeaker has the advantages that firstly, the large space volume of the bass cavity 121 is fully utilized, secondly, the heat generated by the working of the power panel 5 and the power amplification panel 6 can be taken away by utilizing the airflow generated by bass sound waves, and the heat flow is dissipated out through the phase inversion tube 2, so that the heat dissipation effect is improved.

Referring to fig. 5 in combination with fig. 4, one side (front side) of the horn sound outlet hole 101 of the rib 22 in the right sound chamber 122 extends obliquely in a direction close to the bass chamber 121, thereby providing a sufficient installation space for the front tweeter 3. The rear side of the rib plate 22 is of a flat plate structure and is parallel to the width direction of the housing 1, and the rear side is closer to the right end wall of the housing 1 than the front side.

Compared with the conventional flat plate design, the inclined arrangement of the rib plate 22 can reduce unnecessary space occupation in the right acoustic cavity 122, reduce the volume of the right acoustic cavity 122 as much as possible, and further reduce the volume of the housing 1.

In addition, a connection plate 25 extending in the horizontal direction is further provided at the lower end of the front side of the rib plate 22 in a protruding manner. The connection plate 25 is provided with a connection hole 202.

In order to further reduce the space occupation, the connecting plate 25 is triangular, the longest edge of the connecting plate 25 is vertically connected with the rib plate 22, and the connecting hole 202 is opened at the tip end thereof. The bottom wall of the case 1 has a hollow cylindrical stud (not shown) projecting upward, and the stud 24 and the connection hole 202 are opposed to each other in the up-down direction for a screw to pass through, thereby fixing the inverter tube 2 in the case 1. In this embodiment, the connection plate 25 is suspended and aligned with the stud of the bottom wall of the housing 1 and screwed. In other embodiments, the connecting plate 25 may be provided at the bottom of the rib plate 22; when the installation, connecting plate 25 and the diapire laminating of casing 1, the spiro union of being convenient for.

The nozzle at the right end of the inverter tube 2 has a protruding annular flange 23, a hollow cylindrical stud 24 is formed on the surface of the flange 23, and the axial direction of the stud 24 coincides with the longitudinal direction of the housing 1. In this embodiment, the number of the studs 24 is two, and the two studs 24 are arranged in a central symmetry manner with respect to the pipe orifice, so as to ensure the stability of the connection. In other embodiments, the studs 24 may be plural in number and spaced circumferentially about the nozzle.

Referring to fig. 6 in combination with fig. 3, a plurality of screw holes 103 are further formed on the right end wall of the housing 1, and the screw holes 103 are disposed around the through hole 102.

When the inverter tube 2 is installed, the mouth of the inverter tube 2 abuts against the right end wall of the casing 1 and is opposite to the through hole 102, the flange 23 is attached to the inner side of the right end wall, the stud 24 and the screw hole 103 are opposite to each other so that a matched screw can penetrate through the stud 24 and the screw hole 103, and the inverter tube 2 and the right end wall are fixed.

In the present embodiment, the inverter tube 2 is bolted to the casing 1 through the stud 24 on the right end and the connection hole 202 on the rib 22, instead of the conventional installation method of adding a notch on the rib wall of the inverter tube 2, so as to avoid the situation that the inverter tube 2 cannot be sealed on the installation path. In other embodiments, the inverter tube 2 may be clamped with the housing 1 by a clamping structure, which may also avoid increasing notches on the rib wall of the inverter tube 2, and may not require screws or other accessories, thereby reducing the installation cost.

Referring to fig. 7 in combination with fig. 5, the upper end of at least one inner wall (specifically, the front side wall) of the housing 1 along the length direction is bent to form a slot 104, the slot 104 extends along the length direction, and the cross section of the slot 104 is rectangular.

The upper end of the front side of the rib plate 22 is also provided with a clamping lug 26 protruding forwards. When the inverter tube 2 is mounted, the front side of the rib plate 22 abuts against the inner surface of the front side wall, and the locking projection 26 is inserted into and accommodated in the locking groove 104, thereby positioning between the rib plate 22 and the casing 1.

The upper end of rib plate 22 is provided with a wire hole 201, so that the cable of tweeter 3 in right sound cavity 122 extends upwards into bass cavity 121 through wire hole 201, and is electrically connected to power amplifier board 6. Specifically, the wire passing hole 201 is semi-arc-shaped, the opening is upward, the caliber is small, and the influence on the sealing performance of the sound cavity is avoided.

In the present embodiment, the inverter tube 2 has a specific length and opening size so that the vibration frequency of the air in the inverter tube 2 matches the vibration frequency of the horn unit low frequency band.

Referring back to fig. 5, the tube 21 includes a first tube 271, a middle tube 272 and a second tube 273 connected in sequence along the length direction. Wherein, the middle pipe section 272 is a straight cylinder shape, and the diameter size of the middle pipe section 272 is kept unchanged; the two ends of the middle pipe section 272 are respectively connected with the first pipe section 271 and the second pipe section 273 in a circular arc transition mode.

The first pipe section 271 has a diameter gradually increasing in a direction away from the intermediate pipe section 272 to be horn-shaped. The orifice of the first tube segment 271 is located in the bass chamber 121 and faces the woofer 4. The rib 22 is arranged around the outer circumference of the first pipe section 271. The first pipe section 271 is of an axially symmetrical structure, and the cross section of the first pipe section 271 is in a track shape.

The second pipe section 273 has a diameter gradually increasing in a direction away from the intermediate pipe section 272 to be trumpet-shaped. The second tube segment 273 and the middle tube segment 272 are both located in the right sound chamber 122, and the orifice of the second tube segment 273 abuts against the end wall of the housing 1 to communicate with the outside. It can be considered that the overall length of both the second tube segment 273 and the middle tube segment 272 is approximately equal to the length of the right acoustic chamber 122.

The second tube segment 273 is different from the symmetrical structure of the first tube segment 271, and the second tube segment 273 is integrally bent forward and obliquely extended relative to the middle tube segment 272. Equivalently, the rear side of the second tube segment 273 is in the same plane as the rear side of the middle tube segment 272, while the front side of the second tube segment 273 is inclined to the right. The inclined arrangement of the second pipe section 273 and the inclined manner of the front side of the rib plate 22 are arranged in a left-right symmetrical manner, and are in an inverted trapezoid shape with a large front part and a small back part. The purpose of the angled configuration of the second tube segment 273 is to: in the narrow space of the right sound chamber 122, a sufficient installation space is provided for the tweeter 3 provided in the front in order to fit the size of the tweeter 3.

The length of inverter tube 2 in bass chamber 121 is smaller than that of right acoustic chamber 122, so as to minimize the occupation of space in bass chamber 121 and to make full use of the volume of right acoustic chamber 122, thereby minimizing the overall volume.

Referring to fig. 8 and 9, the inverter tube 2 can be divided into two parts along its own axis to form two spliceable parts, so that it can be manufactured separately and the manufacturing difficulty and cost can be reduced.

Specifically, body 21 includes along the relative first half shell 211 of self axial and second half shell 212, and first half shell 211 and second half shell 212 all are the hemicycle, but the joint is pieced together as an organic wholely. Correspondingly, the rib 22 also includes two plates 221 integrally formed on the first half-shell 211 and the second half-shell 212, respectively, and each plate 221 is perpendicular to the axial direction of each half-shell.

Wherein the first half-shell 211 is more rearward, i.e. away from the tweeter 3 at the front side, than the second half-shell 212.

As shown in fig. 8, protruding strips 213 extending along the axial direction of the first half-shell 211 are respectively protruded from two side edges of the opening of the first half-shell 211, and the two protruding strips 213 are parallel to each other at intervals.

Meanwhile, a plurality of positioning holes 215 are provided on each side edge of the first half-shell 211 at intervals in the axial direction, the positioning holes 215 being located on the outer sides of the protruding strips 213. The positioning hole 215 is located at a side edge of the first half-shell 211 protruding and extending in the thickness direction of the first half-shell.

As shown in fig. 9, two side edges of the opening of the second half-shell 212 are respectively recessed with grooves 214 extending along the axial direction, and the shape and size of the grooves 214 are matched with those of the convex strips 213. Thus, when the two half shells are assembled, the rib 213 is snugly received in the groove 214.

A plurality of positioning protrusions 216 axially spaced are vertically protruded from each side edge of the second half-shell 212, the positioning protrusions 216 are cylindrical, and when the second half-shell is spliced, the positioning protrusions 216 correspondingly penetrate through the positioning holes 215 to realize splicing and positioning of the second half-shell and the second half-shell.

The butt joint of the two plates 221 is provided with a clamping structure similar to the convex strip 213 and the groove 214, so that the two plates 221 can be spliced into a complete rib plate 22.

In this embodiment, the first half-shell 211 is provided with a protruding strip 213, and the second half-shell 212 is provided with a groove 214 adapted to the protruding strip 213, thereby forming a snap connection. In other embodiments, the positions of the ribs 213 and grooves 214 can be interchanged between the two housing halves, or even the structure of the ribs 213 and grooves 214 can exist on the same housing half and mate with the other housing half to mate with the other housing half.

Similarly, the first half-shell 211 is provided with a positioning hole 215, and the second half-shell 212 is provided with a positioning protrusion 216 adapted to the positioning hole 215, thereby forming a snap-fit connection. In other embodiments, the positions of the positioning holes 215 and the positioning protrusions 216 may be interchanged between the two half-shells, and even the structure of the positioning holes 215 and the positioning protrusions 216 may exist on the same half-shell and mate with the other half-shell to mate.

In the present embodiment, inverter tube 2 further includes a plurality of ribs 28 arranged at intervals in the circumferential direction of tube body 21. The reinforcing ribs 28 are in a strip shape, and the reinforcing ribs 28 are connected to the pipe body 21 and the rib plates 22, so that the strength of the whole structure is improved.

When installing the inverter tube, first half shell 211 and second half shell 212 splice earlier and form whole, will wholly place in second cavity 12 of casing 1 again, will invert the mouth of pipe butt of pipe 2 on the right-hand member wall of casing 1 and relative with through-hole 102, flange 23 laminating is on the inboard of right-hand member wall, and double-screw bolt 24 and screw 103 are relative to wear to establish with the screw that supplies the adaptation, realize inverting pipe 2 and right-hand member wall's fixed. Then, the connection holes 202 on the rib plate 22 are screwed and fixed with the studs at the bottom of the shell. Therefore, the bass enhancement function of the inverter tube can be achieved, the second cavity 12 can be separated into the bass cavity 121 and the right sound cavity 122, heat generated by the power amplifier board 4 and the power panel 5 can be transmitted to the outside through the inverter tube 2, the temperature inside the cavity is reduced, and the safety is guaranteed.

In this embodiment, the inverter tube 2 is manufactured by dividing the entire inverter tube 2 into two halves along its axial direction to form two half-shells that can be spliced, thereby reducing the manufacturing difficulty and cost.

In other embodiments, the inverter tube 2 may be divided into two cylindrical structures with smaller length along its own transverse direction, and the two cylindrical structures are spliced together to form a complete tube body. Even, the inverter tube 2 can also separately manufacture the tube body 21 and the rib plate 22, and the shape and the size of the rib plate 22 can be adjusted according to the shapes of different cavities, namely the rib plate can be matched with the inner wall of the cavity to separate the cavities; the shape and the size of the tube body 21 can be kept still; the volume of the rib plate 22 is small compared with the volume of the pipe body 21, and the manufacturing cost is low. By replacing the rib plates 22 with different sizes, the phase reversal pipe 2 can adapt to sound box bodies of different models, and the sound box has wide application range and high universality.

In summary, the sound bar 100 provided by the present invention at least has the following advantages and positive effects:

the inverter tube 2 can be used as a functional part and a sealing structure. Specifically, the inverter tube 2 includes a tube body 21 and a rib plate 22 integrally formed on the periphery of the tube body 21, and the rib plate 22 is tightly attached to the inner wall of the second cavity 12 along the circumferential direction to divide the second cavity 12 into a bass cavity 121 and a right sound cavity 122 which are independent of each other. The phase inverter tube 2 can be used as a baffle plate to realize the separation of the sound cavity, and the installation and the disassembly are convenient. Phase inverter 2 strides and locates bass chamber 121 and right sound chamber 122, has rationally used the volume of two sound chambers, compares in traditional place phase inverter 2 alone at bass chamber 121's mounting means, can not reduce bass unit's size, do not influence under the prerequisite of bass effect, reduced casing 1's length, and then reduce the occupation of audio amplifier volume. And, the right sound chamber 122 communicates with the outside. The orifice of one end of the inverter tube 2 is communicated with the bass chamber 121, and the orifice of the other end is communicated with the outside, so that the bass chamber 121 is communicated with the outside space, the phases of the internal sound wave and the external sound wave are the same, and the bass effect is enhanced.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (16)

1. A soundbar, comprising:

the shell is in a long strip shape, and a left sound cavity and a second cavity are arranged in the shell at intervals along the length direction of the shell;

the phase inverter tube is arranged in the second cavity; the phase-reversing pipe comprises a hollow cylindrical pipe body and rib plates integrally formed on the periphery of the pipe body; the pipe body extends along the length direction of the shell, the periphery of the rib plate is tightly attached to the inner wall of the second cavity along the circumferential direction, and the second cavity is divided into a bass cavity and a right sound cavity which are independent; the bass cavity is positioned between the left sound cavity and the right sound cavity; and a pipe orifice at one end of the phase reversal pipe is communicated with the bass cavity, and a pipe orifice at the other end of the phase reversal pipe is communicated with the outside.

2. The soundbar of claim 1, wherein a portion of the inverter tube is located in the bass chamber, and a port at the other end of the inverter tube abuts against an end wall of the enclosure and communicates with the outside.

3. The soundbar according to claim 2, wherein the end wall of the casing has a through hole therethrough, the size of the through hole being adapted to the shape of the mouth of the inverter tube, the through hole being in communication with the inverter tube.

4. The soundbar of claim 3, wherein the end wall of the housing further comprises a plurality of screw holes, the screw holes surrounding the through-holes; the pipe orifice of the inverter pipe is provided with a protruding annular flange, and a hollow cylindrical stud is formed on the surface of the flange; the flange is attached to the end wall of the shell, and the stud and the screw hole are opposite to each other and are penetrated by a matched screw.

5. The soundbar of claim 2, wherein the tube comprises a first tube section, a middle tube section, and a second tube section that are connected in series along the length direction; the caliber of the first pipe section is gradually increased in the direction far away from the middle pipe section, and the caliber of the second pipe section is gradually increased in the direction far away from the middle pipe section; the pipe orifice of the first pipe section is positioned in the bass cavity, the second pipe section is positioned in the right sound cavity, and the pipe orifice of the second pipe section is abutted against the end wall of the shell and communicated with the outside.

6. The sound bar of claim 1, wherein the bass chamber has a length that is greater than a length of the left sound chamber and a length of the right sound chamber, respectively.

7. The sound bar of claim 1, wherein the housing defines a speaker sound outlet in a side wall of the right sound cavity; the rib plate extends obliquely from one side of the sound outlet of the loudspeaker to the direction close to the bass cavity.

8. The soundbar according to claim 1, wherein the casing is bent at the upper end of the inner wall of at least one side in the length direction to form a snap groove, and the lateral edge of the rib plate is provided with a protruding snap; when the side edge of the rib plate abuts against the inner wall of the shell, the clamping protrusion is contained in the clamping groove.

9. The soundbar according to claim 8, wherein the rib has a wire hole at the upper end.

10. The soundbar according to claim 1, wherein the rib plates are provided with protruding connection plates extending out in the horizontal direction, the connection plates being provided with connection holes; the bottom wall of the shell is provided with a hollow cylindrical stud which protrudes upwards, and the stud and the connecting hole are opposite up and down for a screw to penetrate through, so that the phase inversion pipe is fixed in the shell.

11. The sound bar of claim 1, wherein the duct body includes first and second axially opposed half shells along the duct body, the half shells each having a semi-annular shape and being engageable with each other.

12. The soundbar according to claim 11, wherein two side edges of the opening of the first half-shell are respectively provided with protruding strips extending in the axial direction in a protruding manner, the two protruding strips being parallel to each other; the edges of two sides of the opening of the second half shell are respectively provided with a groove extending along the axial direction in a concave mode, and the convex strips are correspondingly contained in the grooves.

13. The sound bar of claim 12, wherein a plurality of axially spaced locating holes are provided in each side edge of the first housing half, the locating holes being located on an outer side of the rib; and a plurality of positioning protrusions which are spaced along the axial direction are arranged on each side edge of the second half shell in a protruding mode, and the positioning protrusions are arranged in the positioning holes in a penetrating mode.

14. The soundbar according to claim 11, wherein the rib comprises two plates integrally formed on the first half shell and the second half shell, respectively, each plate being perpendicular to an axial direction of each half shell.

15. The sound bar of claim 1, wherein the inverter tube further comprises a plurality of ribs spaced circumferentially around the tube; the reinforcing ribs are connected to the pipe body and the rib plates.

16. A display device, characterized in that it comprises a display body and a soundbar according to any of claims 1-15; the bar-shaped sound box is horizontally arranged and located at the bottom or two sides of the display main body, and the bar-shaped sound box is electrically connected with the display main body.

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