Display device
By designing an exposed speaker housing and a flow guide wall structure in the display device, the resonance problem caused by the bass reflex speaker is solved, thereby improving low-frequency sound effects, making the device thinner and lighter, and reducing wind noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HISENSE VISUAL TECH CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-21
AI Technical Summary
The resonance problem caused by bass reflex speakers in display devices leads to abnormal noises and structural impacts.
The exposed part of the speaker housing is designed to be exposed on the rear shell, with the speaker diaphragm facing the back of the rear shell. It is connected to the external space of the display device through the external port of the bass reflex tube, and combined with the guide wall to guide the vibrating airflow and avoid the airflow impacting the internal structure.
Enhance low-frequency sound effects, avoid resonance, reduce wind noise, and achieve a slim and lightweight design and clean appearance for the display device.
Smart Images
Figure CN224536665U_ABST
Abstract
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 some display devices, the speaker assembly uses a bass reflex port. The airflow from the bass reflex port impacts the internal structure of the display device. If the airflow frequency is close to the natural frequency of a component, it can cause severe resonance and produce abnormal noise. Utility Model Content The purpose of this invention is to provide a display device to solve the resonance problem caused by using a bass reflex speaker.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: 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, the speaker assembly comprising: a speaker housing, disposed on the back side of the back plate, the back of the speaker housing having an exposed portion exposed to the rear shell; a speaker, disposed within the speaker housing, the diaphragm end of the speaker being disposed in the exposed portion and arranged toward the back side of the rear shell; the speaker being capable of emitting sound toward the back side of the rear shell; and a bass reflex port, disposed within the speaker housing, the inner port of the bass reflex port communicating with the interior of the speaker housing, the outer port of the bass reflex port being disposed in the exposed portion and arranged toward the back side of the rear shell.
[0006] The above-mentioned technical solution has the following advantages or beneficial effects: An exposed portion is formed on the back of the speaker housing, allowing it to be exposed to the rear shell; the speaker diaphragm is located on the exposed portion and arranged facing the back of the rear shell, enabling the speaker to emit sound towards the back of the rear shell. The external port of the bass reflex tube is located on the exposed portion, allowing it to connect to the external space of the display device. Vibrating airflow inside the speaker housing can be directly discharged towards the external space of the display device through the bass reflex tube, which not only enhances low-frequency sound effects but also avoids airflow impact on the internal structure of the display device, preventing resonance and effectively solving the resonance problem caused by bass reflex speakers.
[0007] In some embodiments of this application, the rear shell is provided with a window area, and the exposed portion is located within the window area.
[0008] The above-mentioned technical solution has the following advantages or beneficial effects: the exposed part of the speaker housing can be exposed to the rear shell through the window area, thereby enabling the speaker diaphragm to emit sound towards the back side of the rear shell through the window area.
[0009] In some embodiments of this application, the window area is located on the back side of the speaker housing, and the exposed portion is fitted into the window area.
[0010] The above-mentioned technical solution has the following advantages or beneficial effects: by embedding the exposed part of the speaker housing into the window area, the thickness of the internal space occupied by the speaker housing can be reduced, which is conducive to reducing the thickness of the back shell, thereby reducing the thickness of the display device and facilitating the realization of a thin and light design for the display device.
[0011] In some embodiments of this application, the back side of the exposed portion is flush with the back side of the rear shell.
[0012] The above-mentioned technical solution has the following advantages or beneficial effects: by making the back of the exposed part flush with the back of the rear shell, the appearance of the display device is flat and neat. In addition, by adapting the exposed part to the window area, it is possible to achieve a thinner and lighter design for the display device.
[0013] In some embodiments of this application, the bass reflex tube is provided with an arc-shaped guide wall near the outer port, the guide wall is exposed outside the outer port and connected to one side edge of the outer port; the vibrating airflow in the bass reflex tube can flow along the guide wall to the outer port, and be obliquely discharged from the outer port to the back side of the speaker housing.
[0014] The above-mentioned technical solution has the following advantages or beneficial effects: the guide wall design reduces eddies in the vibrating airflow at the outer port of the bass reflex tube, which helps to reduce wind speed and wind noise. At the same time, the vibrating airflow is obliquely discharged from the back side of the speaker housing through the guide wall and propagates obliquely to the back side of the rear shell, which can prevent the vibrating airflow from directly hitting the wall opposite the back side of the outer port, thus avoiding vibration.
[0015] In some embodiments of this application, the outer end of the guide wall is smoothly connected to the rear wall of the speaker housing, and the inner end of the guide wall is smoothly connected to the front side wall inside the bass reflex tube.
[0016] The above-mentioned technical solution has the following advantages or beneficial effects: the smooth connection structure of the inner and outer ends of the guide wall makes the guide wall form a streamlined structure, which can better reduce the eddy currents of the vibrating airflow at the outer port of the phase inverter, which is conducive to reducing wind speed and wind noise.
[0017] In some embodiments of this application, the speaker housing includes: a first housing member; a second housing member disposed on the back side of the first housing member; the first housing member and the second housing member are spliced together front and back to form the speaker housing; the diaphragm end of the speaker is fixed to the second housing member, and the exposed portion protrudes from the back side of the second housing member.
[0018] The above-mentioned technical solution has the following advantages or beneficial effects: by splicing the first shell and the second shell together, a closed shell structure with a closed inner cavity can be formed, and by the exposed part protruding on the back of the second shell, the diaphragm end of the speaker can be exposed on the back of the second shell and emit sound towards the back side of the rear shell.
[0019] In some embodiments of this application, the guide wall includes: a first guide portion disposed within the first housing; a second guide portion disposed within the second housing; the first guide portion and the second guide portion are joined together to form the guide wall.
[0020] The above-mentioned technical solution has the following advantages or beneficial effects: by setting the first flow guide and the second flow guide on the first shell and the second shell, the first flow guide and the second flow guide can be smoothly connected and spliced to form a flow guide wall. The splice seam can be close to the outer port of the phase inverter, which is beneficial to reduce the eddy current of the vibrating airflow at the outer port of the phase inverter and improve the assembly efficiency of the flow guide wall.
[0021] In some embodiments of this application, the magnetic circuit end of the loudspeaker is disposed on the front wall of the loudspeaker housing and exposed outside the front wall of the loudspeaker housing; and or, the loudspeaker assembly includes at least two loudspeakers, the at least two loudspeakers being arranged at intervals.
[0022] The above-mentioned technical solution has the following advantages or beneficial effects: By exposing the magnetic circuit end of the speaker to the front of the speaker housing, it is beneficial to heat dissipation of the magnetic circuit end of the speaker, thereby improving the speaker's heat dissipation efficiency. By having two speakers facing the back of the speaker housing, the diaphragms of two or more speakers can vibrate in the same direction, thereby enhancing the speaker's sound effect.
[0023] In some embodiments of this application, the speaker housing is provided with two bass reflex tubes, which are arranged in a mirror-symmetric or centrally symmetric manner.
[0024] The above-mentioned technical solution has the following advantages or beneficial effects: By arranging the two bass reflex tubes in a mirror-symmetric or centrally symmetric manner, the vibration uniformity of the airflow inside the speaker housing can be improved, which helps to reduce the vibration of the speaker housing and avoid resonance. In addition, it is beneficial to shorten the length of the two bass reflex tubes. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of a display device according to some embodiments of this application.
[0026] Figure 2 yes Figure 1 A structural diagram from another perspective.
[0027] Figure 3 yes Figure 2 A partially enlarged structural diagram.
[0028] Figure 4 yes Figure 3 A schematic diagram of its decomposed structure.
[0029] Figure 5 yes Figure 4 A schematic diagram of the structure of the loudspeaker assembly.
[0030] Figure 6 yes Figure 5 A schematic diagram of its decomposed structure.
[0031] Figure 7 yes Figure 6 A structural diagram from another perspective.
[0032] Figure 8 yes Figure 5 A front view of the image.
[0033] Figure 9 yes Figure 8 Sectional view along line AA.
[0034] Figure 10 yes Figure 9 A magnified view of a portion of the image.
[0035] Figure 11It is a sectional view along the BB direction in section 8.
[0036] Figure 12 yes Figure 11 A magnified view of a portion of the image.
[0037] Figure 13 yes Figure 8 A schematic diagram of another embodiment of the loudspeaker assembly.
[0038] Figure 14 yes Figure 8 A schematic diagram of another embodiment of the loudspeaker assembly.
[0039] The reference numerals in the attached drawings are explained as follows: 1. Display panel; 2. Rear shell; 21. Window area; 3. Back plate; 4. Speaker assembly; 41. Speaker housing; 411. First shell; 412. Second shell; 4121. Receiving groove; 4122. Exposed part; 42. Speaker; 421. Diaphragm end; 422. Magnetic circuit end; 423. Speaker bracket; 43. Bass reflex tube; 431. Inner port; 432. Outer port; 433. Guide wall; 4331. First guide part; 4332. Second guide part; 4333. Connecting groove; 4334. Connecting rib. Detailed Implementation
[0040] 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.
[0041] In the description of this application, it should 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", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0043] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The current trend towards ultra-thin designs in televisions and other display devices limits speaker thickness, back cover strength, and speaker mounting clearance, further leading to problems such as poor low-frequency speaker performance and resonance in the overall structure of the display device, causing abnormal vibration and noise, and affecting the user experience.
[0044] 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.
[0045] 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.
[0046] 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.
[0047] The enclosure of a sealed speaker 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, but it suffers from low-frequency efficiency.
[0048] 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.
[0049] 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.
[0050] like Figure 2 and Figure 3 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.
[0051] like Figure 3 and Figure 4 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.
[0052] In some embodiments, the display device may further include electrical components, which may be a motherboard, power board, control board, or other heat-generating devices. The electrical components and their electronic parts are fixed to the back of the back plate 3 and disposed between the back plate 3 and the rear shell 2.
[0053] like Figure 2 and Figure 3 As shown, in some embodiments, the rear shell 2 has a forward-extending sidewall on its periphery, 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 enclosed space, thereby encapsulating electrical components and other devices in the space.
[0054] like Figure 3 and Figure 4 As shown, in some embodiments, the display device may include a speaker assembly 4 disposed between the back side of the back panel 3 and the rear housing 2. The speaker assembly 4 can emit sound to the outside of the rear housing 2.
[0055] like Figure 2 and Figure 4 As shown, in some embodiments, the speaker assembly 4 may be provided in at least two sets. The two sets of speaker assemblies 4 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 4 may also be provided on the upper and lower sides of the back side of the back plate 3.
[0056] It should be noted that the number of speaker components 4 can be adjusted as needed, and no limit is imposed here.
[0057] like Figure 2 and Figure 3 As shown, in some embodiments, the back of the speaker assembly 4 may be exposed outside the rear housing 2, and the speaker assembly 4 may emit sound toward the back side of the rear housing 2 through the exposed area of its back.
[0058] like Figure 3 and Figure 4 As shown, in some embodiments, the rear housing 2 may have a window area 21, and at least a portion of the back of the speaker assembly 4 is located within the window area 21. The back of the speaker assembly 4 can be exposed to the rear housing 2 through the window area 21, thereby emitting sound toward the back side of the rear housing 2 through the window area 21.
[0059] like Figure 4 and Figure 5 As shown, in some embodiments, the speaker assembly 4 may include a speaker housing 41, 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 41 can provide mounting space for other components of the speaker assembly 4.
[0060] like Figure 4 and Figure 5 As shown, in some embodiments, the speaker housing 41 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 41, through which the speaker housing 41 can be mounted and fixed to the back side of the back plate 3.
[0061] like Figure 4 and Figure 5 As shown, in some embodiments, the speaker housing 41 may have a square or rectangular structure. In other embodiments, the speaker housing 41 may also have other structural forms, which are not limited here.
[0062] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, the speaker assembly 4 may include at least one speaker 42 disposed within the speaker housing 41. The diaphragm end 421 of the speaker 42 may be exposed on the back side of the speaker housing 41, i.e., exposed on the rear surface of the speaker housing 41, so that the speaker 42 can emit sound toward the rear side of the speaker housing 41. The diaphragm end 421 of the speaker 42 may be arranged toward the rear shell 2, and the magnetic circuit end 422 of the speaker 42 may be arranged toward the back plate 3, so that the speaker 42 can emit sound toward the rear side of the rear shell 2. For example, the diaphragm of the speaker 42 is exposed in the rear shell 2, so that the sound generated by the vibration of the diaphragm of the speaker 42 can be emitted directly toward the rear side of the rear shell 2.
[0063] like Figure 5 and Figure 6As shown, in some embodiments, a receiving groove 4121 may be provided on the back side of the speaker housing 41, and the diaphragm of the speaker 42 may be disposed within the receiving groove 4121. By having the diaphragm of the speaker 42 disposed within the receiving groove 4121, the diaphragm end 421 of the speaker 42 can be exposed on the back side of the speaker housing 41. Because the receiving groove 4121 is recessed into the back side of the speaker housing 41, and the diaphragm of the speaker 42 can be disposed within the receiving groove 4121, the diaphragm of the speaker 42 does not protrude from the back side of the speaker housing 41, which helps protect the diaphragm of the speaker 42 and meets the ultra-thin design requirements of the display device.
[0064] like Figure 6 and Figure 7 As shown, in some embodiments, the magnetic circuit end 422 of the speaker 42 is exposed at the front of the speaker housing 41 and is arranged towards the back plate 3. By exposing the magnetic circuit end 422 of the speaker 42 at the front of the speaker housing 41, it is beneficial to dissipate heat from the magnetic circuit end 422 of the speaker 42, thereby improving the heat dissipation efficiency of the speaker 42.
[0065] In some embodiments, the speaker assembly 4 may include two or more speakers 42, which may be arranged sequentially at intervals along the long side of the speaker housing 41. The diaphragm ends 421 of the two or more speakers 42 are exposed on the back side of the speaker housing 41, and thus all emit sound towards the back side of the rear shell 2. By inputting the same signal to the two or more speakers 42, the diaphragms of the two or more speakers 42 vibrate in the same direction, thereby enhancing the sound effect of the speakers 42.
[0066] It should be noted that in some other embodiments, the number of speakers 42 in speaker assembly 4 may also be set to one. The number of speakers 42 can be adjusted as needed and is not limited here.
[0067] like Figure 3 and Figure 5 As shown, in some embodiments, the back side of the speaker housing 41 is provided with an exposed portion 4122, and the diaphragm end 421 of the speaker 42 is disposed in the exposed portion 4122. The exposed portion 4122 is exposed to the rear shell 2, so that the diaphragm end 421 of the speaker 42 can be exposed to the rear shell 2 and arranged facing the back side of the rear shell 2, thereby allowing the diaphragm end 421 of the speaker 42 to emit sound directly towards the back side of the rear shell 2.
[0068] like Figure 4 and Figure 5As shown, in some embodiments, the rear shell 2 may have a window area 21, and the exposed portion 4122 may be located within the window area 21. The exposed portion 4122 of the speaker housing 41 can be exposed to the rear shell 2 through the window area 21, thereby allowing the diaphragm end 421 of the speaker 42 to emit sound towards the back side of the rear shell 2 through the window area 21. In this case, there is no need to provide a sound outlet on the rear shell 2 that is arranged opposite to the diaphragm of the speaker 42, and the vibration of the diaphragm of the speaker 42 can directly emit sound towards the back side region of the rear shell 2.
[0069] In some embodiments, the window area 21 is located on the back side of the speaker housing 41, and the exposed portion 4122 is fitted into the window area 21. By fitting the exposed portion 4122 of the speaker housing 41 into the window area 21, the thickness of the internal space occupied by the speaker housing 41 can be reduced, which is beneficial to reducing the thickness of the rear shell 2, thereby reducing the thickness of the display device and facilitating the realization of a thinner and lighter design for the display device.
[0070] like Figure 3 and Figure 4 As shown, in some embodiments, the back side of the exposed portion 4122 can be flush with the back side of the rear housing 2. By making the back side of the exposed portion 4122 flush with the back side of the rear housing 2, the appearance of the display device becomes flat and neat. In addition, by adapting the exposed portion 4122 to the window area 21, it is possible to achieve a thinner and lighter design for the display device.
[0071] like Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the speaker housing 41 may include a first housing member 411 and a second housing member 412. The peripheral edges of the first housing member 411 and the peripheral edges of the second housing member 412 are joined together to form a closed housing structure with a closed inner cavity.
[0072] In some embodiments, the second housing 412 may be disposed on the back side of the first housing 411, and the first housing 411 and the second housing 412 are joined together to form a speaker housing 41. The first housing 411 may be arranged facing the back plate 3, and the second housing 412 may be arranged facing the rear housing 2. A receiving groove 4121 may be formed on the back side of the second housing 412. The speaker 42 may be disposed between the first housing 411 and the second housing 412. An exposed portion 4122 may protrude from the back side of the second housing 412. The diaphragm end 421 of the speaker 42 may be disposed on the second housing 412 and exposed on the back side of the second housing 412. The magnetic circuit end 422 of the speaker 42 may be disposed on the first housing 411 and exposed on the front side of the first housing 411. By splicing the first shell 411 and the second shell 412 together, a closed shell structure with a closed inner cavity can be formed. The exposed part 4122 protrudes from the back of the second shell 412, so that the diaphragm end 421 of the speaker 42 can be exposed on the back of the second shell 412 and emit sound towards the back side of the rear shell 2.
[0073] like Figure 9 and Figure 10 As shown, in some embodiments, the diaphragm of the loudspeaker 42 can be fixed to the second housing 412 by a speaker bracket 423. The peripheral edge of the diaphragm can be fixed to the speaker bracket 423. The peripheral edge of the speaker bracket 423 can be fixed to the second housing 412. The magnetic circuit end 422 of the loudspeaker 42 can be fixed to the first housing 411 and exposed at the front of the first housing 411.
[0074] like Figure 6 , Figure 8 and Figure 11 As shown, in some embodiments, the speaker assembly 4 may include a bass reflex port 43, which is disposed inside the speaker housing 41. The inner port 431 of the bass reflex port 43 communicates with the interior of the speaker housing 41, and the outer port 432 of the bass reflex port 43 is disposed on the outer wall of the speaker housing 41 and communicates with the external space of the speaker housing 41. The bass reflex port 43 can form an open box structure for the speaker housing 41. When the diaphragm end 421 of the speaker 42 vibrates, the sound wave vibration generated inside the speaker housing 41 can enter the bass reflex port 43 through the inner port 431 of the bass reflex port 43, and after being tuned and phased by the bass reflex port 43, it is delayed and then propagates to the outside of the speaker housing 41 through the outer port 432 of the bass reflex port 43. This superimposes with the sound wave propagating from the diaphragm end 421 of the speaker 42 to the outside of the speaker housing 41, thereby enhancing the low-frequency sound effect.
[0075] In some embodiments, the outer port 432 of the bass reflex tube 43 is located in the exposed portion 4122 and is arranged towards the back side of the rear housing 2. Thus, the sound wave vibrations inside the speaker housing 41 can be delayed and transmitted after tuning and inversion by the bass reflex tube 43, propagating towards the back side of the rear housing 2. This superimposes with the sound waves propagating towards the back side of the rear housing 2 from the diaphragm end 421 of the speaker 42, thereby enhancing the low-frequency sound effect. Simultaneously, the airflow discharged from the bass reflex tube 43 is directly discharged to the back side of the rear housing 2, avoiding airflow impact on the internal structure of the display device, preventing resonance, and effectively solving the resonance problem caused by the bass reflex tube 43-type speaker 42.
[0076] like Figure 6 , Figure 7 and Figure 11 As shown, in some embodiments, a portion of the phase inverter 43 may be formed on the inner wall of the first housing 411, i.e., on the rear wall of the first housing 411. Another portion of the phase inverter 43 is formed on the inner wall of the second housing 412, i.e., on the front wall of the first housing 411. When the first housing 411 and the second housing 412 are joined together, the two portions of the phase inverter 43 are joined together between the first housing 411 and the second housing 412 to form a complete phase inverter 43 structure.
[0077] like Figure 5 , Figure 6 and Figure 11 As shown, in some embodiments, the bass reflex tube 43 may have an arc-shaped guide wall 433 near its outer port 432, which is part of the inner wall of the bass reflex tube 43. The guide wall 433 may be exposed outside the outer port 432 and connected to one side edge of the outer port 432. The vibrating airflow inside the bass reflex tube 43 may flow along the guide wall 433 to the outer port 432 and be obliquely discharged from the outer port 432 to the back side of the speaker housing 41. Through the guiding design of the guide wall 433, the eddy currents of the vibrating airflow at the outer port 432 of the bass reflex tube 43 can be reduced, which helps to reduce wind speed and wind noise. At the same time, the vibrating airflow is obliquely discharged from the back side of the speaker housing 41 through the guide wall 433 and propagates obliquely to the back side of the rear shell 2, which can prevent the vibrating airflow from directly hitting the wall opposite the back side of the outer port 432, thus avoiding vibration.
[0078] like Figure 11 and Figure 12As shown, in some embodiments, the outer end of the guide wall 433 smoothly connects to the rear wall of the speaker housing 41 at the side edge of the outer port 432 of the bass reflex tube 43, forming one side edge of the outer port 432 of the bass reflex tube 43. The inner end of the guide wall 433 smoothly connects to the front side wall inside the bass reflex tube 43. The smooth connection structure of the inner and outer ends of the guide wall 433 creates a streamlined structure, which is more conducive to reducing eddies in the vibrating airflow at the outer port 432 of the bass reflex tube 43, thus reducing wind speed and wind noise.
[0079] like Figure 11 and Figure 12 As shown, in some embodiments, the flow guide wall 433 may extend from the inner wall of the first housing 411 to the rear wall of the second housing 412. The flow guide wall 433 may include a first flow guide portion 4331, which is disposed inside the first housing 411 and may extend in an arc shape from the inner wall of the first housing 411 toward the outer port 432 of the phase inverter tube 43.
[0080] In some embodiments, the flow guide wall 433 may include a second flow guide portion 4332, which may be disposed on the second housing 412. The second flow guide portion 4332 may extend arcuately from one side edge of the outer port 432 of the second housing 412 toward the first flow guide portion 4331. The first flow guide portion 4331 and the second flow guide portion 4332 are smoothly connected, so that the first flow guide portion 4331 and the second flow guide portion 4332 are spliced together to form the flow guide wall 433. By disposing the first flow guide portion 4331 and the second flow guide portion 4332 separately on the first housing 411 and the second housing 412, the first flow guide portion 4331 and the second flow guide portion 4332 can be smoothly connected and spliced together to form the flow guide wall 433. The splice seam can be close to the outer port 432 of the phase inverter 43, which helps to reduce the eddy currents of the vibrating airflow at the outer port 432 of the phase inverter 43 and improves the assembly efficiency of the flow guide wall 433.
[0081] like Figure 11 and Figure 12 As shown, in some embodiments, the end of the first guide section 4331 facing the second guide section 4332 may be provided with a connecting groove 4333, and the end of the second guide section 4332 facing the first guide section 4331 may be provided with a connecting rib 4334. The connecting rib 4334 can be engaged with the connecting groove 4333 to align and connect the first guide section 4331 and the second guide section 4332, thereby improving the assembly efficiency of the guide wall 433.
[0082] like Figure 13As shown, in some embodiments, two bass reflex tubes 43 may be provided inside the speaker housing 41, and the two bass reflex tubes 43 may be symmetrically arranged inside the speaker housing 41. The two bass reflex tubes 43 may be arranged in a left-right mirror symmetrical manner inside the speaker housing 41. The inner ports 431 of the two bass reflex tubes 43 are spaced apart. The outer ports 432 of the two bass reflex tubes 43 are symmetrically arranged on the left and right sides of the rear wall of the speaker housing 41. By making the two bass reflex tubes 43 mirror symmetrical, the vibration uniformity of the airflow inside the speaker housing 41 can be improved, which is beneficial to reducing the vibration of the speaker housing 41 and avoiding resonance. In addition, it is beneficial to shorten the length of the two bass reflex tubes 43.
[0083] like Figure 14 As shown, in some embodiments, two bass reflex tubes 43 can be centrally symmetrically arranged inside the speaker housing 41, with the center of the speaker housing 41 as the center of symmetry. The inner ports 431 of the two bass reflex tubes 43 are spaced apart. The outer ports 432 of the two bass reflex tubes 43 are centrally symmetrically arranged on the rear wall of the speaker housing 41. By making the two bass reflex tubes 43 centrally symmetrical, the vibration uniformity of the airflow inside the speaker housing 41 can be improved, which helps to reduce the vibration of the speaker housing 41 and avoid resonance. In addition, it is beneficial to shorten the length of the two bass reflex tubes 43.
[0084] It should be noted that in some other embodiments, the number of phase inverters 43 can be adjusted as needed, and no limitation is made here.
[0085] 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; Speaker assembly, the speaker assembly comprising: A speaker housing is disposed on the back side of the back plate, and an exposed portion is formed on the back of the speaker housing, which is exposed to the rear shell; A loudspeaker is disposed within the loudspeaker housing, with the diaphragm end of the loudspeaker located in the exposed portion and arranged facing the back side of the rear housing; the loudspeaker is capable of emitting sound towards the back side of the rear housing. A bass reflex tube is disposed inside the speaker housing. The inner port of the bass reflex tube communicates with the interior of the speaker housing, and the outer port of the bass reflex tube is disposed in the exposed portion and arranged towards the back side of the rear housing.
2. The display device as claimed in claim 1, characterized in that, The rear shell has a window area, and the exposed portion is located within the window area.
3. The display device as claimed in claim 2, characterized in that, The window area is located on the back side of the speaker housing, and the exposed portion is fitted into the window area.
4. The display device as claimed in claim 3, characterized in that, The back of the exposed portion is flush with the back of the rear shell.
5. The display device as claimed in claim 1, characterized in that, The phase inverter tube has an arc-shaped guide wall near the outer port, the guide wall is exposed outside the outer port and connected to one side edge of the outer port; The vibrating airflow inside the bass reflex tube can flow along the guide wall to the outer port, and be obliquely discharged from the outer port to the back side of the speaker housing.
6. The display device as claimed in claim 5, characterized in that, The outer end of the guide wall is smoothly connected to the rear wall of the speaker housing, and the inner end of the guide wall is smoothly connected to the front side wall inside the bass reflex tube.
7. The display device as claimed in claim 5, characterized in that, The speaker housing includes: First shell component; The second housing is located on the back side of the first housing; The first housing and the second housing are joined together to form the speaker housing. The diaphragm end of the loudspeaker is fixed to the second housing, and the exposed portion protrudes from the back of the second housing.
8. The display device as claimed in claim 7, characterized in that, The flow guide wall includes: A first flow guide is provided on the first housing; The second flow guide is provided on the second housing; The first guide section and the second guide section are joined together to form the guide wall.
9. The display device as claimed in claim 1, characterized in that, The magnetic circuit end of the loudspeaker is located on the front wall of the loudspeaker housing and is exposed on the front wall of the loudspeaker housing; Alternatively, the speaker assembly includes at least two speakers, which are arranged at intervals.
10. The display device as claimed in claim 1, characterized in that, The speaker housing contains two bass reflex tubes, which are arranged in a mirror-symmetric or centrally symmetric manner.