Display device

Abstract

This utility model relates to a display device, which includes a display panel, a back panel, a rear shell, at least one speaker assembly, and at least one electrical component. The speaker assembly includes a speaker housing, at least one first speaker, and at least one second speaker. The diaphragm of the first speaker is exposed on the back of the speaker housing and faces the rear shell; the diaphragm of the second speaker is exposed on the front of the speaker housing and faces the back panel; the electrical component is spaced apart on one side of the speaker housing; an air guide channel is provided on the front of the speaker housing, with one end of the air guide channel forming an outlet; the diaphragm of the second speaker is located in the air guide channel, with the outlet facing the electrical component; and a convection channel is provided on the outer wall of the speaker housing. When the airflow in the air guide channel blows towards the electrical component through the outlet, it can enter the convection channel through the convection inlet and then flow to the external space on the other side of the speaker housing through the convection outlet, achieving airflow circulation and cooling.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display device. Background Technology

[0002] With the development of multimedia, the importance of display devices is increasing. Therefore, various types of display devices are being used, such as organic light-emitting diode (OLED) displays and liquid crystal displays (LCDs).

[0003] The relevant display device typically includes a back panel, a display panel located on the front side of the back panel, and a display device rear cover covering the back side of the back panel. A speaker is provided between the display device rear cover and the back panel; users in front of the display device can receive the sound generated by the speaker, thereby achieving a higher user experience.

[0004] In related display devices, the trend towards ultra-thin designs has led to limitations in speaker thickness, back shell strength, and speaker mounting gaps. This further results in poor low-frequency performance of the speakers and resonance in the overall structure of the display device, causing abnormal vibration and noise and affecting the user experience. Utility Model Content

[0005] The purpose of this invention is to provide a display device that optimizes the structure of the speaker, reduces and eliminates speaker vibration, and improves the overall heat dissipation performance of the display device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] According to one aspect of the present invention, a display device is provided, comprising: a display panel; a back plate, the display panel being disposed on the front side of the back plate; a rear shell, covering the back side of the back plate; and a speaker assembly disposed between the back side of the back plate and the rear shell. The speaker assembly comprises: a speaker housing; at least one first speaker disposed within the speaker housing, the diaphragm end of the first speaker protruding from the back side of the speaker housing and arranged facing the rear shell; and at least one second speaker disposed within the speaker housing and located around the outer periphery of the first speaker; the diaphragm end of the second speaker protruding from the back side of the speaker housing and arranged facing the rear shell. The second loudspeaker's diaphragm is located in the front of the loudspeaker housing and faces the back panel; electrical components are spaced apart on one side of the loudspeaker housing; a venting channel is provided in the front of the loudspeaker housing, one end of which extends to the side edge of the loudspeaker housing and forms an outlet; the diaphragm of the second loudspeaker is located in the venting channel, and the outlet faces the electrical components; a convection channel is provided on the outer wall of the loudspeaker housing, one end of which extends to the side edge where the outlet is located and forms a convection inlet; the other end of the convection channel extends to the other side edge of the loudspeaker housing and forms a convection outlet.

[0008] The above-mentioned technical solution has the following advantages or beneficial effects: By arranging the diaphragm end of the first speaker towards the rear shell and coordinating the diaphragm end of the second speaker towards the back plate, the vibration directions of the diaphragms of the first and second speakers are opposite. By having the diaphragms of the first and second speakers vibrate in opposite directions, they can exert opposite forces on the speaker housing, thereby reducing the resultant force of the diaphragm vibration on the speaker housing and achieving vibration reduction and elimination of the speaker assembly. Furthermore, by arranging an air guide channel on the front sidewall of the speaker housing, and with the diaphragm end of the second speaker located within the air guide channel, the airflow generated by the vibration of the second speaker diaphragm can be discharged through the outlet and directed towards the electrical components, serving as a heat dissipation source for the components, thereby improving the heat dissipation efficiency of the components and achieving full utilization of energy. By setting a convection channel on the outer wall of the speaker housing, when the airflow in the convection channel blows towards the electrical components through the outlet, the airflow is blocked by the electrical components and returns. It can then enter the convection channel through the convection inlet located on the same side as the outlet, and then flow to the external space on the other side of the speaker housing through the convection outlet at the other end, thereby accelerating the airflow circulation, achieving airflow circulation cooling, and thus improving the heat dissipation performance of the entire display device.

[0009] In some embodiments of this application, the other end of the air guide channel is a closed end, and the closed end and the outlet are respectively located at opposite ends of the air guide channel.

[0010] The above technical solution has the following advantages or beneficial effects: Since the airflow in the air duct is blocked by the closed end, the airflow generated by the vibration of the second speaker diaphragm can be forced to be discharged through the outlet, which blows air to dissipate heat from the electrical components and improves the heat dissipation efficiency of the electrical components.

[0011] In some embodiments of this application, the width of the air guide channel gradually decreases in the direction from the closed end toward the outlet.

[0012] The above-mentioned technical solution has the following advantages or beneficial effects: by forming a gradual structure through the width of the air guide channel, the width of the air guide channel is minimized at the outlet position and the airflow velocity is maximized, thus effectively increasing the airflow velocity towards the electrical components and improving the heat dissipation efficiency of the electrical components.

[0013] In some embodiments of this application, the magnetic circuit end of the first loudspeaker is disposed within the air guide channel and is arranged toward the back plate.

[0014] The above-mentioned technical solution has the following advantages or beneficial effects: when the airflow generated by the vibration of the diaphragm of the second speaker flows in the air guide channel, the airflow in the air guide channel can carry the heat generated by the magnetic circuit end of the first speaker and discharge it to the space outside the contour of the speaker housing through the outlet, thereby improving the heat dissipation efficiency of the magnetic circuit end of the first speaker, which in turn helps to improve the power of the speaker assembly and achieve better sound effects.

[0015] In some embodiments of this application, two second loudspeakers are provided, with the diaphragm ends of the two second loudspeakers respectively disposed on opposite sides of the magnetic circuit end of the first loudspeaker.

[0016] The above technical solution has the following advantages or beneficial effects: by distributing the diaphragm ends of the two second speakers on opposite sides of the magnetic circuit end of the first speaker, some of the airflow generated by the vibration of the diaphragms of the two second speakers can flow along the air guide channel and pass through the magnetic circuit end of the first speaker to dissipate heat from the magnetic circuit end of the first speaker.

[0017] In some embodiments of this application, the magnetic circuit ends of the two second loudspeakers are exposed on the back of the loudspeaker housing and are respectively disposed on opposite sides of the diaphragm end of the first loudspeaker.

[0018] The above-mentioned technical solution has the following advantages or beneficial effects: by distributing the magnetic circuit ends of the two second speakers on opposite sides of the diaphragm end of the first speaker, the airflow generated by the diaphragm end of the first speaker can be blown along the back of the speaker housing to the magnetic circuit ends of the two second speakers respectively, thereby dissipating heat from the magnetic circuit ends of the two second speakers and improving heat dissipation efficiency.

[0019] In some embodiments of this application, the convection channel is located at the front of the speaker housing and on one side of the air guide channel.

[0020] The above-mentioned technical solution has the following advantages or beneficial effects: by setting the convection channel and the guide channel on the same side, the convection channel can be arranged as the guide channel, so that when the airflow blown out of the outlet returns, it can enter the interior of the convection channel nearby, so that the airflow circulation can proceed smoothly and achieve airflow circulation cooling more effectively.

[0021] In some embodiments of this application, there are two convection channels, which are respectively located on opposite sides of the air guide channel.

[0022] The above-mentioned technical solution has the following advantages or beneficial effects: by setting two convection channels on opposite sides of the air guide channel, when the airflow blown out of the outlet returns, it can enter different convection channels from both sides, thereby improving the efficiency of airflow circulation and enhancing the cooling effect of airflow circulation.

[0023] In some embodiments of this application, the width of the convection channel gradually decreases in the direction from the convection inlet to the convection outlet.

[0024] The above-mentioned technical solution has the following advantages or beneficial effects: By using the gradually changing width structure of the convection channel, the width of the convection inlet can be greater than the width of the convection outlet, making it easier for the airflow blown out of the outlet to enter the convection inlet when it returns, and gradually increasing the airflow velocity in the convection channel, thereby increasing the airflow velocity out of the convection outlet, which can accelerate the airflow velocity in the space on the other side of the speaker housing, improve the efficiency of airflow circulation, and enhance the cooling effect of airflow circulation.

[0025] In some embodiments of this application, a gas barrier layer is provided on the front of the speaker housing. The gas barrier layer is located in the outer peripheral area of ​​the air guide channel, excluding the outlet, and is sandwiched between the front of the speaker housing and the back plate.

[0026] The above-mentioned technical solution has the following advantages or beneficial effects: by setting the gas barrier layer on the outer peripheral area of ​​the air guide channel except for the outlet, the gas flow can be blocked in the outer peripheral area of ​​the air guide channel, so that the airflow generated by the vibration of the second speaker diaphragm can only flow out through the outlet, avoiding the airflow from entering the narrow gap between the speaker housing and the back plate, and improving the blowing efficiency of the outlet, thereby improving the heat dissipation effect. Attached Figure Description

[0027] Figure 1 This is a structural diagram of a display device according to some embodiments of this application.

[0028] Figure 2This is an exploded structural diagram of a display device according to some embodiments of this application.

[0029] Figure 3 yes Figure 2 Another decomposed structure diagram.

[0030] Figure 4 yes Figure 2 A structural diagram of the loudspeaker assembly.

[0031] Figure 5 yes Figure 4 A structural diagram from another perspective.

[0032] Figure 6 yes Figure 4 A front view of the speaker assembly.

[0033] Figure 7 yes Figure 6 Partial sectional view along the AA direction.

[0034] Figure 8 yes Figure 7 Structural diagrams of the speaker assembly in some other embodiments.

[0035] Figure 9 yes Figure 3 A partial cross-sectional view of the display device.

[0036] Figure 10 This is another structural diagram of a speaker assembly according to some embodiments of this application.

[0037] Figure 11 This is yet another structural diagram of a speaker assembly according to some embodiments of this application.

[0038] Figure 12 yes Figure 11 A front view of the speaker assembly.

[0039] Figure 13 This is yet another structural diagram of a speaker assembly according to some embodiments of this application.

[0040] Figure 14 yes Figure 13 A front view of the speaker assembly.

[0041] Figure 15 This is yet another structural diagram of a speaker assembly according to some embodiments of this application. Detailed Implementation

[0042] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0043] High Fidelity (Hi-Fi) refers to the ability to minimize distortion and interference during the recording, processing, transmission, and playback of sound (or other signals) to faithfully reproduce the characteristics of the original signal. This concept is widely used in audio engineering, electronic equipment, and multimedia technology.

[0044] The current trend towards ultra-thin designs in televisions and other display devices has led to limitations in speaker thickness, back cover strength, and speaker mounting clearance. This further results in poor low-frequency performance of the speakers and resonance in the overall structure of the display device, causing abnormal vibration and noise that affects the user experience.

[0045] Currently, there are three main design options for television speakers: open-back enclosures (also known as bass-reflex enclosures), passive radiator enclosures, and closed enclosures.

[0046] An open-back enclosure features a bass reflex port tuned to a specific frequency, causing rear sound waves to be delayed and superimposed on front sound waves, thus enhancing low-frequency output. However, this type of enclosure, due to the presence of openings, inevitably introduces airflow noise, affecting the purity of low frequencies. Furthermore, the airflow at the openings can further impact the internal structure and back cover of the television, causing abnormal vibrations throughout the unit.

[0047] Passive radiator enclosures use a voiceless passive diaphragm (tuned by counterweights) instead of a bass reflex port to enhance low frequencies through resonance. The diaphragm mass and enclosure volume together determine the resonant frequency. This type of enclosure avoids the duct noise problem present in bass reflex speakers; however, the weight of the passive radiator affects low-frequency efficiency, and the larger low-frequency amplitude of the passive radiator can easily lead to distortion caused by excessive diaphragm amplitude.

[0048] A sealed enclosure is completely airtight, with the internal air acting as an elastic damping medium to absorb sound wave energy behind the speaker diaphragm and suppress excessive diaphragm vibration. This type of enclosure effectively avoids the wind noise and distortion drawbacks of bass-reflex and passive radiator enclosures. However, it suffers from low-frequency efficiency. Current sealed enclosures are designed for single-sided vibration, which leads to concentrated force exerted by the diaphragm on the enclosure, resulting in poor low-frequency performance. Furthermore, it easily transmits speaker vibrations to the entire unit, causing abnormal vibrations throughout the unit.

[0049] like Figure 1 As shown, some embodiments of this application provide a display device, which may include a display panel 1. The display panel 1 includes a display surface for displaying images. For example, the display panel 1 may be a liquid crystal display panel 1, and the display device may be a liquid crystal display device or other display devices.

[0050] For ease of description, unless otherwise specified, the descriptions of up, down, left, right, front, and back directions in this document refer to the state when the display device is in use. The following embodiments are described with the light emission direction of the display panel 1 as the front and the opposite direction as the back side.

[0051] like Figure 2 As shown, in some embodiments, the display device may include a rear cover 2, which is configured as the exterior surface of the rear side of the display device and covers the display panel 1.

[0052] like Figure 2 and Figure 3 As shown, in some embodiments, the display device may include a back plate 3, which serves as a structural support for the display device and is disposed inside the display device. The display panel 1 may be disposed on the front side of the back plate 3. A rear shell 2 may be fitted onto the back side of the back plate 3. Optical films and other devices may be placed on the front side of the back plate 3, while electrical components and other devices may be placed on the back side. The rear shell 2 may be fitted onto and fixed to the back side of the back plate 3. The back plate 3 can improve the structural strength of the display device, while the rear shell 2 can decorate the display device and further enhance its structural strength.

[0053] In some embodiments, the display device may further include an electrical component 4, which may be a motherboard, power board, control board, or other heat-generating devices. The electrical component 4 and its electronic components are fixed to the back of the back plate 3 and disposed between the back plate 3 and the rear shell 2.

[0054] like Figure 2 and Figure 3 As shown, in some embodiments, the periphery of the rear shell 2 is provided with a forward-extending sidewall, and the periphery edge of the back plate 3 can be connected to the periphery sidewall of the rear shell 2 so that the rear shell 2 and the back plate 3 form a relatively closed space, thereby encapsulating the electrical components 4 and other devices in the space.

[0055] like Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the display device may include a speaker assembly 5 disposed between the back side of the back panel 3 and the rear housing 2. The speaker assembly 5 can emit sound to the outside of the rear housing 2.

[0056] like Figure 2 and Figure 3 As shown, in some embodiments, the speaker assembly 5 may be provided in at least two sets. The two sets of speaker assemblies 5 may be respectively provided on the left and right sides of the back side of the back plate 3. The two sets of speaker assemblies 5 may also be provided on the upper and lower sides of the back side of the back plate 3.

[0057] It should be noted that the number of speaker components 5 can be adjusted as needed, and no limit is imposed here.

[0058] like Figure 3 As shown, in some embodiments, the rear housing 2 may be provided with a sound outlet 21, which is arranged opposite to the speaker assembly 5. The speaker assembly 5 can emit sound to the outside of the rear housing 2 through the sound outlet 21.

[0059] like Figure 3 and Figure 6 As shown, in some embodiments, the sound outlet 21 may be located on the rear sidewall of the rear housing 2. In other embodiments, the sound outlet 21 may also be located on any sidewall of the rear housing 2. Multiple sound outlets 21 may be provided, arranged at intervals on the rear sidewall of the rear housing 2. Multiple sets of sound outlets 21 may be provided, each set corresponding to a different set of speaker assemblies 5.

[0060] like Figure 6 and Figure 7 As shown, in some embodiments, the speaker assembly 5 may include a speaker housing 51, which may be disposed on the back side of the back plate 3 and between the back plate 3 and the rear shell 2. The speaker housing 51 can provide mounting space for other components of the speaker assembly 5. The speaker housing 51 is a closed housing with a closed cavity formed inside. The speaker housing 51 adopts a fully enclosed design, which distinguishes it from the design of a bass-reflex speaker (which has an internal duct). It should be noted that in some embodiments, the speaker housing 51 may also have one or more through holes of less than 3mm. The through holes of less than 3mm can be used for pressure relief and can also make the speaker housing 51 form a relatively closed housing.

[0061] like Figure 3 and Figure 4 As shown, in some embodiments, the speaker housing 51 can be detachably mounted on the back side of the back plate 3. For example, screw holes are provided at the peripheral edge of the speaker housing 51, through which the speaker housing 51 can be mounted and fixed to the back side of the back plate 3.

[0062] like Figure 6 and Figure 7 As shown, in some embodiments, the speaker housing 51 may have a square or rectangular structure. In other embodiments, the speaker housing 51 may also have other structural forms, which are not limited here.

[0063] like Figure 3 , Figure 6 and Figure 7As shown, in some embodiments, the speaker assembly 5 may include at least one first speaker 52, which is disposed within the speaker housing 51. The diaphragm end 52a of the first speaker 52 may be exposed on the back side of the speaker housing 51, i.e., the rear surface of the speaker housing 51, so that the first speaker 52 can emit sound toward the back side of the speaker housing 51. The diaphragm end 52a of the first speaker 52 may be arranged toward the rear shell 2, and the magnetic circuit end 52b of the first speaker 52 may be arranged toward the back plate 3, so that the first speaker 52 can emit sound toward the back side of the rear shell 2. For example, the diaphragm 521 of the first speaker 52 may be arranged toward the rear shell 2, and the sound outlet 21 on the rear shell 2 may be arranged opposite to the diaphragm of the first speaker 52, so that the diaphragm 521 of the first speaker 52 vibrates, and the sound generated can be emitted toward the back side of the rear shell 2 through the sound outlet 21.

[0064] like Figure 3 and Figure 7 As shown, in some embodiments, multiple sound outlets 21 may be located within the projection range of the diaphragm 521 of the first speaker 52 onto the rear shell 2. It should be noted that in other embodiments, some sound outlets 21 may also be located outside the projection range of the diaphragm 521 of the first speaker 52 onto the rear shell 2.

[0065] like Figure 2 , Figure 6 and Figure 7 As shown, in some embodiments, the speaker assembly 5 may include at least one second speaker 53 disposed within the speaker housing 51. The second speaker 53 may be disposed on the outer periphery of the first speaker 52, such that the first speaker 52 and the second speaker 53 are arranged adjacent to each other. The diaphragm end 53a of the second speaker 53 may be exposed on the front of the speaker housing 51, i.e., the front surface of the speaker housing 51, so that the first speaker 52 can emit sound toward the front of the speaker housing 51. The diaphragm end 53a of the second speaker 53 may be arranged toward the back plate 3, and the magnetic circuit end 53b of the second speaker 53 may be arranged toward the rear shell 2, so that the second speaker 53 can emit sound toward the back plate 3.

[0066] The diaphragm end 52a of the first speaker 52 is arranged towards the rear housing 2, and the diaphragm end 53a of the second speaker 53 is arranged towards the back plate 3. Since the first speaker 52 and the second speaker 53 input the same audio signal, the diaphragm 521 of the first speaker 52 and the diaphragm 531 of the second speaker 53 vibrate in opposite directions. By vibrating the diaphragm 521 of the first speaker 52 and the diaphragm 531 of the second speaker 53 in opposite directions, the diaphragm 521 of the first speaker 52 and the diaphragm 531 of the second speaker 53 can exert opposite forces on the speaker housing 51, thereby reducing the resultant force of the diaphragm vibration on the speaker housing 51, weakening and eliminating the vibration of the speaker assembly 5, thus preventing the generation of abnormal vibration from the source, ensuring low-frequency sound effects, avoiding low-frequency sound distortion caused by abnormal vibration of the display device, and achieving a high-fidelity sound effect for the speaker assembly 5.

[0067] When conventional speakers operate normally in the low-frequency range, low-frequency resonance can cause abnormal resonance in the entire unit, producing low-frequency resonance sounds and distorting the low-frequency sound effects. This, in turn, can easily cause the sound emitted by speaker assembly 5 to be distorted, failing to achieve a high-fidelity effect. The display device of this embodiment is based on a sealed enclosure speaker. It forms a counter-drive unit by using a first speaker 52 and a second speaker 53 arranged in opposite directions to solve the problem of equalizing the reaction force of the ultra-thin sealed enclosure diaphragm. At the same time, the speaker power is increased by arranging multiple units to solve the low-frequency problem, thereby achieving a high-fidelity technical effect with no wind noise, low distortion, and high and low frequency response, thus improving the bass experience.

[0068] Specifically, the first speaker 52 and the second speaker 53 are arranged in opposite directions on opposite sides of the speaker housing 51. The same signal is input to the first speaker 52 and the second speaker 53, so that the vibration direction of the diaphragm 521 of the first speaker 52 is opposite to that of the diaphragm 531 of the second speaker 53. Therefore, the diaphragm 521 of the first speaker 52 and the diaphragm 531 of the second speaker 53 exert opposite forces on the speaker housing 51, thereby reducing the resultant force of the diaphragm vibration on the speaker housing 51, avoiding the generation of abnormal vibration, ensuring low-frequency sound effect, avoiding low-frequency sound distortion caused by abnormal vibration of the display device, and achieving high-fidelity sound effect of the speaker assembly 5.

[0069] Furthermore, compared to the enclosed enclosure design of a single-sided speaker, when the first speaker 52 and the second speaker 53 vibrate in opposite directions in this embodiment, the air inside the enclosure can be compressed or expanded simultaneously, which can both suppress excessive vibration of the diaphragm and prevent abnormal vibration of the speaker housing 51.

[0070] like Figure 2 and Figure 9As shown, in some embodiments, a first gap 501 may be provided between the front of the speaker housing 51 and the back of the back plate 3. The space outside the diaphragm 531 of the second speaker 53 may be connected to the first gap 501, allowing the airflow generated by the diaphragm 531 of the second speaker 53 to be discharged outside the outline of the speaker housing 51 through the first gap 501 and dissipated to other areas on the back side of the back plate 3. In addition, the heat generated by the magnetic circuit end 52b of the first speaker 52 may be discharged outside the outline of the speaker housing 51 through the first gap 501 and dissipated to other areas inside the display device.

[0071] like Figure 3 and Figure 9 As shown, in some embodiments, a second gap 502 may be provided between the back surface of the speaker housing 51 and the rear shell 2. The space outside the diaphragm of the first speaker 52 can communicate with the second gap 502, allowing the airflow generated by the diaphragm of the first speaker 52 to partially exit the outer contour of the speaker housing 51 through the second gap 502 and dissipate heat to other areas between the rear shell 2 and the back plate 3. Furthermore, the heat generated at the magnetic circuit end of the second speaker 53 can be discharged outside the outer contour of the speaker housing 51 through the second gap 502 and dissipated to other areas inside the display device.

[0072] like Figure 6 and Figure 7 As shown, in some embodiments, a first receiving groove 511 is provided on the front of the speaker housing 51, and the diaphragm 531 of the second speaker 53 can be disposed within the first receiving groove 511. By disposing the diaphragm 531 of the second speaker 53 within the first receiving groove 511, it is beneficial to expand the vibration space of the diaphragm, allowing the diaphragm end 53a of the second speaker 53 to be exposed on the front of the speaker housing 51. With the first receiving groove 511 recessed in the front of the speaker housing 51, and the diaphragm 531 of the second speaker 53 disposed within the first receiving groove 511, and the first gap 501 communicating with the first receiving groove 511, the vibration space of the diaphragm 531 of the second speaker 53 can include both the first receiving groove 511 and the first gap 501. This is beneficial to expanding the vibration space of the diaphragm, increasing the distance between the diaphragm and the back plate 3, and consequently reducing the thickness of the first gap 501 between the speaker housing 51 and the back of the back plate 3, thus meeting the ultra-thin design requirements of the display device. Furthermore, the airflow from the diaphragm 531 of the second speaker 53 can enter the first gap 501 through the opening of the first receiving groove 511, and then be transmitted to the space outside the outline of the speaker housing 51 through the first gap 501.

[0073] like Figure 6 and Figure 9As shown, in some embodiments, the first gap 501 is connected to the first receiving groove 511. The airflow from the vibration of the diaphragm 531 of the second speaker 53 can enter the first gap 501 through the opening of the first receiving groove 511, and then be transmitted to the space outside the contour of the speaker housing 51 through the first gap 501.

[0074] like Figure 6 and Figure 7 As shown, in some embodiments, the diaphragm 531 of the second speaker 53 may have a circular structure. The second speaker 53 includes a second support 532. The peripheral edge of the diaphragm of the second speaker 53 can be adhered to the second support 532, and the peripheral edge of the second support 532 can be fixed to the bottom wall of the first receiving groove 511. In this way, the diaphragm of the second speaker 53 can be fixed to the bottom wall of the first receiving groove 511 by the second support 532, so that the diaphragm of the second speaker 53 is fixed in the first receiving groove 511.

[0075] like Figure 5 and Figure 7 As shown, in some embodiments, a second receiving groove 512 may be provided on the back side of the speaker housing 51, and the diaphragm of the first speaker 52 is disposed in the second receiving groove 512, which is beneficial to expanding the vibration space of the diaphragm, so that the diaphragm end 52a of the first speaker 52 can be exposed on the back side of the speaker housing 51. The vibration space of the diaphragm 521 of the first speaker 52 may include the second receiving groove 512 and the second gap 502, which is beneficial to expanding the vibration space of the diaphragm, increasing the distance between the diaphragm 521 of the first speaker 52 and the rear shell 2, and reducing the thickness of the second gap 502 to meet the ultra-thin design requirements of the display device.

[0076] like Figure 5 and Figure 9 As shown, in some embodiments, the second gap 502 is connected to the second receiving groove 512. The vibrating airflow generated by the diaphragm of the first speaker 52 can enter the second gap 502 through the opening of the second receiving groove 512, and then be transmitted through the second gap 502 to the space outside the contour of the speaker housing 51, that is, discharged into other spaces inside the display device.

[0077] like Figure 5 and Figure 7As shown, in some embodiments, the diaphragm 521 of the first speaker 52 may have a circular structure. The first speaker 52 includes a first support 522. The peripheral edge of the diaphragm 521 of the first speaker 52 can be adhered to the first support 522, and the peripheral edge of the first support 522 can be fixed to the bottom wall of the second receiving groove 512. In this way, the diaphragm 521 of the first speaker 52 can be fixed to the bottom wall of the second receiving groove 512 by the first support 522, so that the diaphragm 521 of the first speaker 52 is fixed in the second receiving groove 512.

[0078] like Figure 6 and Figure 7 As shown, in some embodiments, the magnetic circuit end 52b of the first speaker 52 can be exposed at the front of the speaker housing 51, with the magnetic circuit end of the first speaker 52 facing the back plate 3. Exposing the magnetic circuit end 52b of the first speaker 52 at the front of the speaker housing 51 facilitates heat dissipation. The airflow generated by the vibration of the diaphragm 531 of the second speaker 53 can form convection with the magnetic circuit end 52b of the first speaker 52 along the front of the speaker housing 51, thereby improving the heat dissipation efficiency of the first speaker 52. Since the power handling capacity of a speaker is mainly limited by the temperature resistance of the magnetic circuit components, increasing the heat dissipation efficiency of the magnetic circuit end 52b of the first speaker 52 can help increase the power of the speaker assembly 5, thereby achieving better sound effects.

[0079] like Figure 5 and Figure 7 As shown, in some embodiments, the magnetic circuit end 53b of the second speaker 53 is exposed on the back side of the speaker housing 51 and is arranged towards the rear housing 2. Exposing the magnetic circuit end 53b of the second speaker 53 on the back side of the speaker housing 51 facilitates heat dissipation. The airflow generated by the vibration of the diaphragm 521 of the first speaker 52 can form convection with the magnetic circuit end 53b of the second speaker 53 along the back side of the speaker housing 51, improving the heat dissipation efficiency of the second speaker 53. Increasing the heat dissipation efficiency of the magnetic circuit end 53b of the second speaker 53 can also help increase the power of the speaker assembly 5, thereby achieving better sound effects.

[0080] like Figure 4 , Figure 5 and Figure 8 As shown, in some embodiments, the speaker housing 51 may include a first housing member 5101 and a second housing member 5102. The peripheral edges of the first housing member 5101 and the peripheral edges of the second housing member 5102 are connected to each other to form a speaker housing 51 with a closed structure having an inner cavity.

[0081] like Figure 2 , Figure 3 and Figure 8As shown, in some embodiments, the first housing 5101 may be arranged facing the back plate 3, and the second housing 5102 may be arranged facing the rear housing 2. A first receiving groove 511 may be formed on the front of the first housing 5101. A second receiving groove 512 may be formed on the back of the second housing 5102. A first speaker 52 and a second speaker 53 are respectively disposed between the first housing 5101 and the second housing 5102.

[0082] In some embodiments, the magnetic circuit end 52b of the first speaker 52 can be bonded and fixed to the second housing 5102, and the diaphragm end 52a of the first speaker 52 can be fixed to the first housing 5101 via the first bracket 522. The magnetic circuit end 53b of the second speaker 53 can be bonded and fixed to the first housing 5101, and the diaphragm end 53a of the second speaker 53 can be fixed to the second housing 5102 via the second bracket 532. In this way, the middle regions of the first housing 5101 and the second housing 5102 can be fixedly connected by the first speaker 52 and the second speaker 53 respectively, thereby improving the structural strength and structural stability of the speaker housing 51, and enabling the diaphragm 521 of the first speaker 52 and the diaphragm 531 of the second speaker 53 to apply opposite forces to the speaker housing 51, thereby reducing the resultant force of diaphragm vibration on the speaker housing 51, and realizing the weakening and elimination of vibration of the speaker assembly 5.

[0083] like Figure 6 and Figure 9 As shown, in some embodiments, a venting channel 54 may be recessed on the front of the speaker housing 51. The venting channel 54 may communicate with the first gap 501. The diaphragm end 53a of the second speaker 53 may be disposed within the venting channel 54. A first receiving groove 511 may be disposed within the venting channel 54, and the first receiving groove 511 may be recessed in the inner wall of the venting channel 54, thereby increasing the distance between the diaphragm 531 of the second speaker 53 and the back plate 3. This helps to reduce the first gap 501 between the back of the speaker housing 51 and the back of the back plate 3, allowing the first gap 501 to form an ultra-thin gap, or to be reduced to zero, which is beneficial for achieving the ultra-thin design requirements of the display device.

[0084] In some embodiments, one end of the air duct 54 may extend to the side edge of the speaker housing 51 and form an outlet 541 that communicates with the space outside the outline of the speaker housing 51, so that one end of the air duct 54 can communicate with the space outside the outline of the speaker housing 51 through the outlet 541, that is, communicate with other spaces inside the display device.

[0085] An air duct 54 is provided on the front of the speaker housing 51, and the diaphragm end 53a of the second speaker 53 is located in the air duct 54, so that the airflow generated by the vibration of the diaphragm 531 of the second speaker 53 can flow in the air duct 54 and be discharged to the space outside the outline of the speaker housing 51 through the outlet 541.

[0086] like Figure 6 and Figure 9 As shown, in some embodiments, the first speaker 52 can be arranged within the outline of the air guide channel 54, and the magnetic circuit end 52b of the first speaker 52 is disposed within the air guide channel 54, so that the magnetic circuit end 52b of the first speaker 52 can be exposed within the air guide channel 54. When the airflow generated by the vibration of the diaphragm 531 of the second speaker 53 flows within the air guide channel 54, the airflow within the air guide channel 54 can carry the heat generated by the magnetic circuit end 52b of the first speaker 52 and discharge it through the outlet 541 to the space outside the outline of the speaker housing 51, thereby improving the heat dissipation efficiency of the magnetic circuit end 52b of the first speaker 52, which in turn helps to increase the power of the speaker assembly 5 and achieve better sound effects.

[0087] In some embodiments, the other end of the air duct 54 can be a closed end 542. The closed end 542 is the end of the air duct 54 away from the outlet 541. The closed end 542 and the outlet 541 can be located at opposite ends of the air duct 54. Thus, because the airflow in the air duct 54 is blocked by the closed end 542, the airflow generated by the vibration of the diaphragm 531 of the second speaker 53 can only be discharged through the outlet 541 and discharged into the space outside the contour of the speaker housing 51.

[0088] like Figure 2 and Figure 9 As shown, in some embodiments, power supply boards and other electrical components 4 are spaced apart on one side of the speaker housing 51. The outlet 541 faces the power supply board. Thus, when the airflow generated by the vibration of the diaphragm 531 of the second speaker 53 is discharged through the outlet 541, it can blow towards the power supply board, serving as a heat dissipation source for the power supply board, thereby improving the heat dissipation efficiency of the power supply board and achieving full utilization of energy.

[0089] It should be noted that in some embodiments, the power board can be replaced with other electrical components 4, such as a motherboard or other control board. The speaker assembly 5 can also be used as a heat dissipation source for other electrical components 4. The electrical components 4 are spaced apart on one side of the speaker housing 51, and the outlet 541 is arranged facing the electrical component 4. When the airflow generated by the vibration of the diaphragm of the second speaker 53 is discharged through the outlet 541, it can blow towards the electrical component 4, serving as a heat dissipation source for the electrical component 4, thereby improving the heat dissipation efficiency of the electrical component 4 and realizing full utilization of energy.

[0090] like Figure 6 As shown, in some embodiments, the width of the air guide channel 54 gradually decreases in the direction from the closed end 542 towards the guide outlet 541. Thus, the air guide channel 54 forms a gradient structure, resulting in the smallest width and largest airflow velocity at the outlet 541. This effectively increases the airflow velocity towards the electrical component 4, improving its heat dissipation efficiency. Furthermore, the streamlined gradient structure of the air guide channel 54 is more conducive to noise reduction and avoids abnormal vibrations caused by turbulent airflow.

[0091] like Figure 4 , Figure 6 and Figure 9 As shown, in some embodiments, the speaker assembly 5 may include two second speakers 53. The first speaker 52 is located near or disposed at the center of the speaker housing 51. The two second speakers 53 are disposed on opposite sides of the first speaker 52. By distributing the two second speakers 53 on opposite sides of the first speaker 52, the reaction force of the vibration of the diaphragm 531 of the two second speakers 53 on the speaker housing 51 overlaps with the reaction force of the vibration of the diaphragm 521 of the first speaker 52 on the speaker housing 51, resulting in a better force cancellation effect and more effectively achieving vibration reduction and elimination of the speaker assembly 5.

[0092] In some embodiments, a second speaker 53, a first speaker 52, and another second speaker 53 are sequentially arranged within an air guide channel 54. The magnetic circuit end 52b of the first speaker 52 is positioned in the middle of the air guide channel 54, and the diaphragm ends 53a of the two second speakers 53 are respectively located on opposite sides of the magnetic circuit end of the first speaker 52. By positioning the diaphragm ends of the two second speakers 53 on opposite sides of the magnetic circuit end of the first speaker 52, some of the airflow generated by the vibration of the diaphragm 531 of the two second speakers 53 can flow along the air guide channel 54, passing through the magnetic circuit end of the first speaker 52, and dissipating heat from the magnetic circuit end of the first speaker 52.

[0093] In some embodiments, a portion of the airflow generated by the vibration of the diaphragm 531 of the two second speakers 53 can be discharged through the outlet 541 and blown toward the electrical device 4, serving as a heat dissipation source for the electrical device 4 and improving the heat dissipation efficiency of the electrical device 4.

[0094] For example, by setting a delay between the input electrical signals of the two second speakers 53, the diaphragms of the two second speakers 53 can reach their maximum values ​​at different times, thereby enabling the airflow from the two second speakers 53 to be alternately discharged from the outlet 541 and blown toward the electrical device 4, thus improving the heat dissipation effect on the electrical device 4.

[0095] Furthermore, by setting a delay between the input electrical signals of the two second speakers 53, the diaphragms of the two second speakers 53 can reach their maximum values ​​at different times, thereby achieving alternating airflow directions at the magnetic circuit end 52b of the first speaker 52, improving heat dissipation, and thus increasing the power of the speaker assembly 5 to achieve better sound effects.

[0096] like Figure 6 and Figure 9 As shown, in some embodiments, two second speakers 53 can be symmetrically arranged on opposite sides of the first speaker 52. By symmetrically arranging the two second speakers 53, the two second speakers 53 can be as close as possible to the first speaker 52, and the vibration distribution on both sides of the first speaker 52 can be made uniform. This also makes the force cancellation effect between the two second speakers 53 and the first speaker 52 better, thus ensuring the vibration elimination effect between the two second speakers 53 and the first speaker 52.

[0097] like Figure 6 As shown, in some embodiments, one pair of opposite sides of the speaker housing 51 forms a long side, and the other pair of opposite sides of the speaker housing 51 forms a short side. The first speaker 52 and two second speakers 53 can be arranged in a straight line. One second speaker 53, the first speaker 52, and the other second speaker 53 can be arranged sequentially along the short side of the speaker housing 51, with the two second speakers 53 respectively positioned close to one of the long sides of the speaker housing 51. By sequentially arranging the first speaker 52 and the two second speakers 53 along the short side of the speaker housing 51, the two second speakers 53 can be as close as possible to the long side of the speaker housing 51, reducing the distance between the two second speakers 53 and the corresponding side edges of the speaker housing 51. Simultaneously, the two second speakers 53 can be as close as possible to the first speaker 52, ensuring better force cancellation between the two second speakers 53 and the first speaker 52, thus improving the vibration cancellation effect.

[0098] like Figure 6 and Figure 9 As shown, in some embodiments, the diaphragm ends 53a of the two second speakers 53 are respectively located at both ends of the air duct 54. One second speaker 53's diaphragm end 53a can be arranged close to the closed end 542, and the other second speaker 53's diaphragm end 53a can be arranged close to the outlet 541. This allows the two second speakers 53 to be located close to the opposite side edges of the speaker housing 51, thereby simultaneously reducing the distance between the two second speakers 53 and the corresponding side edges of the speaker housing 51. This allows the airflow from the two second speakers 53 to be discharged more quickly through the outlet 541, achieving rapid pressure relief, vibration reduction, and elimination of abnormal vibrations.

[0099] like Figure 2 and Figure 6As shown, in some embodiments, the air duct 54 extends along the height direction of the display device, with the closed end 542 located at the top of the air duct 54 and the outlet 541 located at the bottom of the air duct 54. Electrical components 4 can be spaced apart below the speaker housing 51. The airflow generated by the vibration of the diaphragm 531 of the second speaker 53 can blow downwards through the outlet 541 of the air duct 54, dissipating heat from the electrical components 4 located below and improving heat dissipation efficiency.

[0100] In some embodiments, multiple electrical components 4 may be provided, and the multiple electrical components 4 are respectively arranged opposite to the outlet 541 of the corresponding speaker assembly 5, so that the multiple speaker assemblies 5 can dissipate heat from different electrical components 4 (such as power boards, motherboards or other control boards).

[0101] like Figure 2 and Figure 6 As shown, in some embodiments, vent holes 22 may be provided on the bottom sidewall of the rear shell 2. Multiple vent holes 22 may be provided, and these vent holes 22 are arranged sequentially at intervals along the length of the bottom sidewall of the rear shell 2. After the airflow is discharged from the outlet 541 of the air guide channel 54, it can be discharged to the outside of the display device through the vent holes 22 at the bottom of the rear shell 2, which helps to improve heat dissipation.

[0102] like Figure 2 and Figure 6 As shown, in some embodiments, vent holes 22 may also be provided on the top sidewall of the rear shell 2. Multiple vent holes 22 may be provided, and these vent holes 22 are arranged sequentially at intervals along the length of the fixed sidewall of the rear shell 2. After the airflow is discharged through the outlet 541 of the air guide channel 54, it can also be discharged to the outside of the display device through the vent holes 22 on the top of the rear shell 2, which helps to improve heat dissipation.

[0103] like Figure 5 and Figure 9 As shown, in some embodiments, the magnetic circuit ends 53b of the two second loudspeakers 53 are exposed on the back of the loudspeaker housing 51 and are respectively disposed on opposite sides of the diaphragm end 52a of the first loudspeaker 52. In this way, the vibrating airflow generated by the diaphragm end 52a of the first loudspeaker 52 can be blown along the back of the loudspeaker housing 51 towards the magnetic circuit ends 53b of the two second loudspeakers 53, thereby dissipating heat from the magnetic circuit ends 53b of the two second loudspeakers 53 and improving heat dissipation efficiency.

[0104] like Figure 2 and Figure 10As shown, in some embodiments, a gas barrier layer 55 may be provided on the front of the speaker housing 51. The gas barrier layer 55 is located at the side edge of the air guide channel 54 and sandwiched between the front of the speaker housing 51 and the back plate 3. By providing the gas barrier layer 55 at the side edge of the air guide channel 54, the side edge of the air guide channel 54 can be blocked from gas flow, allowing the airflow generated by the vibration of the diaphragm 531 of the second speaker 53 to flow more strictly along the air guide channel 54, preventing airflow from entering the narrow gap between the speaker housing 51 and the back plate 3. This is more conducive to achieving noise treatment of the airflow, eliminating and reducing the low-frequency vibration and noise of the speaker, avoiding the influence of the narrow gap between the speaker housing 51 and the back plate 3 on the speaker performance, and preventing resonance caused by airflow turbulence.

[0105] In some embodiments, the gas barrier layer 55 is made of a gas-blocking material, for example, the gas barrier layer 55 is made of an impermeable or slightly permeable material. The gas barrier layer 55 can be used to block the passage of gas and prevent the airflow in the air duct 54 from entering the narrow gap between the speaker housing 51 and the back plate 3.

[0106] In some embodiments, the gas barrier layer 55 is elastic, such that the gas barrier layer 55 elastically abuts against the back surface of the back plate 3. By utilizing the elasticity of the gas barrier layer 55 to elastically abut against the back surface of the back plate 3, the sealing performance at the side edge of the air duct 54 can be improved, effectively preventing airflow in the air duct 54 from entering the narrow gap between the speaker housing 51 and the back plate 3.

[0107] like Figure 2 and Figure 10 As shown, in some embodiments, the gas barrier layer 55 can be interference-fitted with the back side of the back plate 3. For example, the thickness of the gas barrier layer 55 is greater than the thickness of the narrow gap between the speaker housing 51 and the back plate 3, so that the gas barrier layer can be interference-fitted with the back side of the back plate 3, thereby improving the sealing performance at the side edge of the air duct 54 and effectively preventing the airflow in the air duct 54 from entering the narrow gap between the speaker housing 51 and the back plate 3.

[0108] In some embodiments, the gas barrier layer 55 may be made of EVA material. For example, the gas barrier layer 55 may be made of EVA material with a hardness of 30°-50°. EVA material has sufficient hardness and can also have a certain degree of elasticity, which is beneficial to improving the sealing performance at the side edges of the gas guide channel 54.

[0109] like Figure 10As shown, in some embodiments, the gas barrier layer 55 is disposed on the outer peripheral area of ​​the air guide channel 54, excluding the outlet 541. In this way, gas flow can be blocked in the outer peripheral area of ​​the air guide channel 54, so that the airflow generated by the vibration of the diaphragm 531 of the second speaker 53 can only flow out through the outlet 541, preventing airflow from entering the narrow gap between the speaker housing 51 and the back plate 3, and improving the blowing efficiency of the outlet 541, thereby improving the heat dissipation effect.

[0110] like Figure 2 , Figure 11 and Figure 12 As shown, in some embodiments, the outer wall of the speaker housing 51 may be provided with a convection channel 56. One end of the convection channel 56 extends to the side edge where the outlet 541 is located, forming a convection inlet 561 that communicates with the space outside the outline of the speaker housing 51, so that one end of the convection channel can communicate with the external space on one side of the speaker housing 51 through the convection inlet 561. The other end of the convection channel 56 extends to the other side edge of the speaker housing 51, forming a convection outlet 562 that communicates with the space outside the outline of the speaker housing 51, so that the other end of the convection channel 56 can communicate with the external space on the other side of the speaker housing 51 through the convection outlet 562. In this way, when the airflow in the guide channel blows towards the electrical device 4 through the outlet 541, the airflow is blocked by the electrical device 4 and returns. It can enter the interior of the convection channel 56 through the convection inlet 561 located on the same side as the outlet 541, and then flow to the external space on the other side of the speaker housing 51 through the convection outlet 562 at the other end, thereby achieving the purpose of accelerating airflow circulation and realizing airflow circulation cooling.

[0111] like Figure 11 and Figure 12 As shown, in some embodiments, the convection channel 56 can be located at the front of the speaker housing 51 and on one side of the air guide channel 54. By placing the convection channel 56 and the air guide channel on the same side, the convection channel 56 can be arranged with the air guide channel 54, so that when the airflow blown out of the outlet 541 returns, it can enter the interior of the convection channel 56 nearby, so that the airflow circulation can proceed smoothly and achieve airflow circulation cooling more effectively.

[0112] In some embodiments, two convection channels 56 are provided, which are respectively located on opposite sides of the air guide channel 54. By having two convection channels 56 located on opposite sides of the air guide channel 54, when the airflow blown out of the outlet 541 returns, it can enter different convection channels 56 from both sides, thereby improving the efficiency of airflow circulation and enhancing the cooling effect of airflow circulation.

[0113] like Figure 13 and Figure 14As shown, in some embodiments, the width of the convection channel 56 gradually decreases in the direction from the convection inlet 561 to the convection outlet 562. Thus, the gradually decreasing width structure of the convection channel 56 allows the width of the convection inlet 561 to be greater than the width of the convection outlet 562. This makes it easier for the airflow blowing from the outlet 541 to enter the convection inlet 561 upon return, and gradually increases the airflow velocity within the convection channel 56. This increases the airflow velocity exiting the convection outlet 562, thereby accelerating the airflow velocity in the space on the other side of the speaker housing 51, improving the efficiency of airflow circulation, and enhancing the cooling effect of airflow circulation.

[0114] like Figure 2 , Figure 3 and Figure 14 As shown, in some embodiments, the air duct 54 can extend along the height direction of the display device, with the closed end 542 located at the top of the air duct 54 and the outlet 541 located at the bottom of the air duct 54. Electrical components 4 are spaced apart below the speaker housing 51. The convection channel 56 can extend along the height direction of the display device, with the convection inlet 561 located at the bottom of the convection channel 56 and the convection outlet 562 located at the top of the air duct 54. An air outlet is provided on the top sidewall of the rear housing 2. Thus, when the airflow in the air duct 54 blows downwards towards the electrical component 4 through the outlet 541, the airflow is blocked and returned by the electrical component 4, enters the interior of the convection channel 56 through the convection outlet 562, and then exits through the top convection outlet 562. Finally, it can exit the display device through the air outlet on the top sidewall of the rear housing 2, dissipating heat from the entire device and achieving airflow circulation cooling.

[0115] like Figure 15 As shown, in some embodiments, multiple gas barrier layers 55 may be provided. These multiple gas barrier layers 55 are disposed in front of the speaker housing 51 and sandwiched between the speaker housing 51 and the back plate 3. The multiple gas barrier layers 55 may be disposed on opposite sides of the convection channel 56, achieving gas barrier between the opposite sides of the convection channel 56. This allows the returning airflow to flow more strictly through the convection channel 56, preventing airflow from entering the narrow gap between the speaker housing 51 and the back plate 3, thereby improving the airflow circulation and cooling effect.

[0116] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A display device, characterized in that, include: Display panel; Back panel, the display panel is disposed on the front side of the back panel; The rear cover is fitted over the back side of the back plate; At least one speaker assembly is disposed between the back side of the back panel and the rear housing; The speaker assembly includes: Speaker housing, wherein the speaker housing is a closed housing; At least one first loudspeaker is disposed within the loudspeaker housing, with the diaphragm end of the first loudspeaker exposed on the back side of the loudspeaker housing and arranged toward the rear housing; At least one second loudspeaker is disposed within the loudspeaker housing and on the outer periphery of the first loudspeaker; the diaphragm end of the second loudspeaker is exposed at the front of the loudspeaker housing and is arranged toward the back plate; At least one electrical component is disposed at intervals on one side of the speaker housing; The speaker housing has an air duct at the front, and one end of the air duct extends to the side edge of the speaker housing to form an outlet. The diaphragm of the second loudspeaker is located within the air passage, and the outlet is arranged facing the electrical component. The outer wall of the speaker housing is provided with a convection channel. One end of the convection channel extends to the side edge where the outlet is located and forms a convection inlet. The other end of the convection channel extends to the other side edge of the speaker housing and forms a convection outlet.

2. The display device as claimed in claim 1, characterized in that, The other end of the air guide channel is a closed end, and the closed end and the outlet are respectively located at opposite ends of the air guide channel.

3. The display device as claimed in claim 2, characterized in that, The width of the air guide channel gradually decreases in the direction from the closed end toward the outlet.

4. The display device as claimed in claim 1, characterized in that, The magnetic circuit end of the first loudspeaker is located in the air guide channel and is arranged towards the back plate.

5. The display device as claimed in claim 4, characterized in that, There are two second speakers, with the diaphragm ends of the two second speakers located on opposite sides of the magnetic circuit end of the first speaker.

6. The display device as claimed in claim 5, characterized in that, The magnetic circuit ends of the two second loudspeakers are exposed on the back of the loudspeaker housing and are respectively located on opposite sides of the diaphragm end of the first loudspeaker.

7. The display device as claimed in claim 1, characterized in that, The convection channel is located at the front of the speaker housing and on one side of the air guide channel.

8. The display device as claimed in claim 7, characterized in that, The convection channel is provided in two parts, which are located on opposite sides of the air guide channel.

9. The display device as claimed in claim 1, characterized in that, The width of the convection channel gradually decreases in the direction from the convection inlet to the convection outlet.

10. The display device as claimed in claim 1, characterized in that, A gas barrier layer is provided on the front of the speaker housing. The gas barrier layer is located in the outer peripheral area of ​​the air guide channel, excluding the outlet, and is sandwiched between the front of the speaker housing and the back plate.

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