Sound guiding shell for light and thin liquid crystal television

Abstract

The application relates to the technical field of liquid crystal television production, and in particular relates to an acoustic guiding shell for a light and thin liquid crystal television. The acoustic guiding shell comprises an integrally formed plastic shell and an acoustic guiding plate. The shell comprises a protective cover, a grid plate and a reinforcing column. The acoustic guiding plate is installed on the grid plate and surrounded by the protective cover to form an acoustic guiding cavity. The acoustic guiding plate is arranged with a plurality of rows of acoustic guiding units. Each row of acoustic guiding units comprises a plurality of acoustic guiding holes, each of which is in communication with the acoustic guiding cavity. The grid plate is arranged with a plurality of grid strips. Each grid strip is located between two adjacent rows of acoustic guiding units. The grid gap surrounded by two adjacent grid strips is in communication with the acoustic guiding holes of the corresponding acoustic guiding unit. The reinforcing column is arranged on the protective cover and extends into the acoustic guiding cavity and is located above the acoustic guiding plate. The structure can effectively improve the structural strength of the acoustic guiding holes of the liquid crystal television, so that the acoustic effect of the acoustic guiding holes is good, and the acoustic guiding hole structure is not prone to deformation and sinking after the acoustic guiding shell is impacted.

Description

Technical Field

[0001] This application relates to the field of LCD TV manufacturing technology, and in particular to an audio guide housing for a thin and light LCD TV. Background Technology

[0002] In the LCD TV industry, with increasingly fierce market competition and growing consumer demand for thinner and more aesthetically pleasing products, the design trend of LCD TVs is moving towards greater thinness and lightness, resulting in increasingly thinner casings. This trend inevitably leads to a continuous reduction in the thickness of the back shell of the LCD TV's speaker structure, achieving greater weight reduction and portability. These thin and light LCD TVs have built-in speaker systems, and their sound effects are primarily transmitted to the outside space through sound guide holes on the sound-guiding casing. The audio system consists of a voice coil, permanent magnet, paper cone, and sound guide housing. LCD TVs typically have a mounting position on the side or back of the casing. Considering cost-effectiveness, the LCD TV casing needs to have the same thickness as the sound guide housing. Therefore, most mid-range LCD TVs on the market use a one-piece molded plastic sound guide housing with a specific thickness. The sound guide housing is installed in the mounting position on the LCD TV using screws, and the side with the sound guide hole structure is usually positioned on the bottom of the LCD TV to prevent deformation from accidental impacts during daily use. In addition, some manufacturers add a support foot to the bottom of the sound guide housing to improve stability and provide extra support. While these methods meet the requirements of thinner and lighter designs to some extent, they still have some limitations.

[0003] However, existing plastic sound guide shells, even with thinner casings, are prone to deformation upon external impact due to limitations in material properties and structural design. This deformation leads to structural changes in the sound guide holes, thus affecting sound transmission efficiency and sound quality. Therefore, how to improve the structural strength of the sound guide shell while maintaining a thinner design, and prevent the sound guide holes from deforming due to impact, has become an urgent technical problem to be solved. Utility Model Content

[0004] In order to adapt to existing thin and light LCD TVs, effectively improve the structural strength of the sound guide hole of the LCD TV, thereby making the sound effect of the sound guide hole better, and the sound guide hole structure is not easily deformed and sunken after the sound guide shell is impacted, this application provides a sound guide shell for thin and light LCD TVs.

[0005] To achieve the above objectives, this application provides a sound guide housing for a thin and light LCD TV, comprising an integrally molded plastic housing and a sound guide plate. The housing includes a protective cover, a grid plate, and a reinforcing post. The protective cover is used to install on the mounting position of the LCD TV. The grid plate is disposed at the bottom of the protective cover. The sound guide plate is installed on the grid plate and forms a sound guide cavity with the protective cover. The sound guide plate has several rows of sound guide units arranged in a row. Each row of sound guide units includes several sound guide holes, and each sound guide hole communicates with the sound guide cavity. The grid plate has several grid strips arranged in a row. Each grid strip is located between two adjacent rows of sound guide units, and the grid gap formed by two adjacent grid strips communicates with the sound guide hole of the corresponding sound guide unit. The reinforcing post is disposed on the protective cover, extends into the sound guide cavity, and is located above the sound guide plate. When the speaker is installed, the reinforcing post abuts against the LCD TV. By adopting the above technical solution, the protective cover and the grid plate are integrally molded to form a stable sound-guiding cavity structure, which matches the existing LCD TV casing. The sound-guiding plate is rationally placed on the grid plate within the sound-guiding cavity, working together with the grid plate to disperse the compressive force generated by impact, thus strengthening the original thin and light sound-guiding shell structure. The sound-guiding cavity can effectively concentrate sound, and then conduct the sound to the outside through the sound-guiding holes of the sound-guiding plate, ensuring the clarity and propagation efficiency of the sound quality. The design of multiple rows of sound-guiding units allows the sound to diffuse evenly outward through multiple sound-guiding holes, avoiding the sound distortion or unevenness problems that may be caused by a single sound outlet.

[0006] The grid strips on the grid plate are rationally arranged, and the gaps formed by two adjacent grid strips are connected to the sound guide holes of the corresponding sound guide units. This design not only enhances the stability of the overall structure but also ensures the smoothness of the sound transmission path. The reinforcing pillars extend into the sound guide cavity and are located above the sound guide plate. When installing the speakers, they abut against the mounting position of the LCD TV, significantly improving the overall strength of the sound guide shell and effectively preventing deformation caused by external impacts. This protects the integrity of the sound guide hole structure, ensuring that sound transmission efficiency and sound quality performance are always at their best. Preferably, the sound guide plate is a carbon fiber composite plate or a high-strength polymer plastic plate. By adopting the above technical solution, carbon fiber composite plates and high-strength polymer plastic plates have high strength and rigidity, effectively improving the deformation resistance of the sound guide plate. In the LCD TV sound system, the sound guide plate, as a key component for sound propagation, directly affects sound quality performance due to its structural stability. Compared to traditional plastic materials, carbon fiber composite panels are more expensive. Therefore, mid-range LCD TVs typically use plastic sound guide shells. Carbon fiber composite panels, due to their unique fiber-reinforced structure, can better disperse stress when subjected to external impacts, thus reducing the risk of deformation of the sound guide holes due to compression. Furthermore, carbon fiber composite panels are lightweight, ensuring structural strength while avoiding increasing the overall weight of the LCD TV, further meeting the demands of thinner and lighter designs. Therefore, using carbon fiber composite panels as the sound guide material, in conjunction with a plastic sound guide shell, improves the structural stability of the sound guide holes at a relatively low cost, while also ensuring efficient sound transmission and pure sound quality. Preferably, the thickness of the sound guide panel is 0.8mm-1mm. By adopting the above technical solution, setting the thickness of the sound guide panel to 0.8mm-1mm ensures sufficient strength for the sound guide panel while also meeting the overall structural thickness requirements of thin and light LCD TVs. If the thickness of the sound guide plate is less than 0.8mm, although the thickness can be further reduced, in actual use, an excessively thin sound guide plate may be easily deformed by external impacts or vibrations, causing changes in the shape and position of the sound guide holes, thus affecting the sound propagation effect and sound quality. While a thickness greater than 1mm improves strength, it increases the overall thickness of the speaker housing, contradicting the design philosophy of slimness and lightness. Therefore, setting the thickness of the sound guide plate between 0.8mm and 1mm ensures structural strength and prevents deformation of the sound guide holes, while meeting the space utilization and aesthetic requirements of slim LCD TVs, and simultaneously ensuring stable sound transmission and excellent sound quality. Preferably, the outer wall of the reinforcing column is provided with several first reinforcing ribs circumferentially. By adopting the above technical solution, providing multiple first reinforcing ribs circumferentially on the outer wall of the reinforcing column significantly improves the overall structural strength of the reinforcing column. Specifically, the first reinforcing ribs allow the reinforcing column to evenly distribute force in all directions when subjected to external impact, avoiding deformation or damage caused by localized stress concentration.Meanwhile, the first reinforcing rib and the reinforcing column form an integrated structure, further enhancing the supporting capacity of the reinforcing column for the top area of ​​the sound-guiding cavity. This effectively prevents the sound-guiding plate from sinking due to external impact, thus ensuring the stability of the shape and position of the sound-guiding hole and ensuring that sound transmission efficiency and sound quality performance are not affected. Furthermore, this structural design achieves a balance between lightweight and high strength without adding excessive materials, adapting to the overall design requirements of thin and light LCD TVs. Preferably, one side of the protective cover is provided with an arc-shaped transition section, and several second reinforcing ribs are spaced apart on the side of the arc-shaped transition section near the sound-guiding cavity. By adopting the above technical solution, the arc-shaped transition section can effectively disperse the external force on the protective cover, avoiding deformation caused by local stress concentration. At the same time, the spaced arrangement of multiple second reinforcing ribs further enhances the structural strength of the arc-shaped transition section, allowing the protective cover to better maintain its shape stability when subjected to external impact. This design not only improves the overall structure's impact resistance but also ensures the integrity of the internal structure of the sound-guiding cavity, thereby ensuring that sound transmission efficiency and sound quality performance are not affected. Preferably, the protective cover extends to a mounting portion on the side away from the arc-shaped transition portion, and the mounting portion has mounting holes for mounting the housing. The reinforcing post is located between the arc-shaped transition portion and the mounting portion. By adopting the above technical solution, the mounting portion extending to the side of the protective cover away from the arc-shaped transition portion, and the mounting portion having mounting holes for mounting the housing, allows the entire speaker housing to be securely fixed to the mounting position of the LCD TV. Simultaneously, because the reinforcing post is located between the arc-shaped transition portion and the mounting portion, when the LCD TV is subjected to external impact, the reinforcing post can effectively disperse and absorb the impact force, preventing the impact force from directly acting on the sound guide plate and sound guide holes, thereby preventing the sound guide holes from deforming due to compression. Furthermore, this structural layout also ensures the integrity of the sound guide cavity, maintaining the normal propagation path of sound within the sound guide cavity, thus guaranteeing the efficiency of sound transmission and the stability of sound quality performance. Preferably, the protective cover is provided with two first reinforcing plates at intervals. Each first reinforcing plate extends to the edge of the grid plate away from the protective cover, and the two first reinforcing plates abut against the two end faces of the sound guide plate, respectively. One first reinforcing plate is located between the mounting part and the reinforcing column, and the other first reinforcing plate is located between the reinforcing column and the arc-shaped transition part. By adopting the above technical solution, the provision of the first reinforcing plates effectively enhances the overall structural strength of the protective cover. Specifically, the two first reinforcing plates extend to the edge of the grid plate away from the protective cover. This design not only expands the coverage area of ​​the reinforcing plates but also ensures that the adjacent surfaces on both sides of the contact surface between the sound guide plate and the grid plate abut against the first reinforcing plates, thereby forming a stable support structure.On the one hand, the first reinforcing plate located between the mounting part and the reinforcing column can effectively distribute the external force from the mounting part, preventing the force from being directly transmitted to the sound guide cavity and causing structural deformation. On the other hand, the first reinforcing plate located between the reinforcing column and the arc-shaped transition part further strengthens the connection stability between the arc-shaped transition part and the reinforcing column, avoiding local stress concentration caused by external impact or vibration. Therefore, this design significantly improves the impact resistance of the sound guide shell, while ensuring the stability of the sound guide hole structure and the reliability of the sound effect. Preferably, a snap-fit ​​seat is provided on the side of the grid plate near the arc-shaped transition part, and the snap-fit ​​seat extends into the sound guide cavity. The snap-fit ​​seat is provided with a first through hole and a second through hole for the support foot to pass through. By adopting the above technical solution, the snap-fit ​​seat is provided on the side of the grid plate near the arc-shaped transition part and extends into the sound guide cavity. This design allows the snap-fit ​​seat to provide a stable mounting base for the support foot. Specifically, the first through hole and the second through hole provided at intervals on the snap-fit ​​seat are used to pass through the support foot. This structure can not only ensure the accurate positioning of the support foot, but also enhance the overall stability of the sound guide shell. Because the locking seat extends into the sound-guiding cavity, its structural strength is further enhanced, effectively preventing deformation caused by external impacts. Furthermore, by rationally distributing the positions of the first and second through holes, the reliability of the support foot installation is ensured while avoiding interference with the sound propagation path inside the sound-guiding cavity, thus guaranteeing sound purity and transmission efficiency. Preferably, the arc-shaped transition portion is provided with an elastic element for abutting against the support foot. The elastic element has a locking groove; when the support foot passes through the first and second through holes, the bottom of the locking groove abuts against the support foot. By adopting the above technical solution, the arc-shaped transition portion is provided with an elastic element, and the elastic element has a locking groove. When the support foot passes through the first and second through holes in sequence, due to the elastic force of the elastic element, the bottom of the locking groove can tightly fit the support foot, thereby effectively fixing the support foot; when the elastic element is pressed from the outer wall of the protective cover, the elastic deformation of the elastic element causes the locking groove of the elastic element to disengage from the support foot. This design not only prevents the support feet from loosening or falling off during installation, but also reduces the impact of external impacts on the sound guide shell through the cushioning effect of the elastic element. Furthermore, the precise fit between the locking slot and the support feet further improves the overall structural stability of the sound guide shell, avoiding deformation of the sound guide holes caused by support foot displacement, thus ensuring stable sound transmission and sound quality. Preferably, the sound guide plate is detachably mounted on the upper surface of the grid plate. By adopting the above technical solution, the sound guide plate and the grid plate are detachably installed, allowing the sound guide plate to be replaced or maintained according to actual needs. During the use of an LCD TV, the sound guide plate, as a key component for sound transmission, may experience poor sound quality due to dust accumulation over time.By designing the sound guide plate as a detachable structure, users or maintenance personnel only need to clean the sound guide plate periodically to restore the speaker's good sound quality. Furthermore, this detachable design facilitates adjustments to the assembly precision between the sound guide plate and the grille plate during the production process, thereby ensuring the connectivity between the sound guide holes and the sound guide cavity, improving sound transmission efficiency and sound quality performance.

[0007] In summary, this application includes at least one of the following beneficial technical effects:

[0008] The protective cover, grid plate, and reinforcing pillars are designed as a single piece. The grid strips on the grid plate are rationally distributed between adjacent rows of sound guide units. The gap formed by two adjacent grid strips communicates with the sound guide holes of the corresponding sound guide units. The reinforcing pillars extend into the sound guide cavity and abut against the mounting position of the LCD TV, eliminating additional assembly gaps between components and enhancing the rigidity and connection stability of the overall structure. This layout ensures acoustic isolation between adjacent sound guide holes, avoiding mutual interference during sound propagation and effectively preventing deformation of the sound guide holes due to external impacts, thereby guaranteeing the stability of sound transmission and sound quality performance. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a sound guide shell for a thin and light LCD TV;

[0010] Figure 2 This is a front view of a sound guide housing used in slim LCD TVs;

[0011] Figure 3 This is a bottom view of a sound guide housing used in slim LCD TVs.

[0012] Explanation of reference numerals in the attached drawings: 1. Protective cover; 2. Grid plate; 3. Reinforcing column; 4. Sound guide plate; 5. Sound guide cavity; 11. Arc-shaped transition part; 12. Mounting part; 13. First reinforcing plate; 21. Grid strip; 22. Grid gap; 23. Snap-fit ​​seat; 31. First reinforcing rib; 41. Sound guide unit; 111. Second reinforcing rib; 112. Elastic element; 121. Mounting hole; 231. First through hole; 232. Second through hole; 411. Sound guide hole; 1121. Snap-fit ​​groove. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0014] This application discloses an audio guide housing for a thin and light LCD TV, referring to... Figure 1 and Figure 2It includes a plastic shell and a sound guide plate 4. The plastic shell is integrally formed by a protective cover 1, a grid plate 2 and a reinforcing column 3. The protective cover 1 is installed on the outer shell of the LCD TV. The bottom of the protective cover 1 is provided with a grid plate 2. The protective cover 1 and the grid plate 2 surround a sound guide cavity 5. The sound guide plate 4 is installed on the plate surface of the grid plate 2 inside the sound guide cavity 5. The protective cover 1 is vertically extended with a reinforcing column 3. The reinforcing column 3 extends into the sound guide cavity 5 and is suspended above the grid plate 2.

[0015] Specifically, an arc-shaped transition portion 11 extends from one side of the protective cover 1, and multiple second reinforcing ribs 111 are spaced apart on the side of the arc-shaped transition portion 11 near the sound-guiding cavity 5. The second reinforcing ribs 111 can be longitudinally arranged straight ribs or laterally arranged curved ribs. In this embodiment, multiple longitudinal straight ribs combined with multiple laterally curved ribs increase the overall rigidity of the protective cover 1, while also guiding the sound propagation path and optimizing acoustic performance. Further, in this embodiment, a mounting portion 12 extends from the side of the protective cover 1 away from the arc-shaped transition portion 11. The mounting portion 12 has mounting holes 121 for mounting on the LCD TV housing, and the reinforcing post 3 is located between the arc-shaped transition portion 11 and the mounting portion 12. In other embodiments, the mounting portion 12 can be a flange with threaded holes or a mounting lug with snap-fit, as long as it can achieve the connection and fixation between the LCD TV housing and the sound-guiding housing.

[0016] Furthermore, the protective cover 1 is provided with two first reinforcing plates 13. One first reinforcing plate 13 is located between the mounting part 12 and the reinforcing column 3, and the other first reinforcing plate 13 is located between the reinforcing column 3 and the arc-shaped transition part 11. Each first reinforcing plate 13 extends to the edge of the grid plate 2 away from the protective cover 1, and the first reinforcing plate 13 is fixedly connected to the grid plate 2. The two first reinforcing plates 13 respectively abut against the two end faces of the sound guide plate 4. Specifically, the first reinforcing plate 13 is a plate structure with a bend. In this embodiment, the protective cover 1 and the grid plate 2 are vertically connected. Correspondingly, the first reinforcing plate 13 is a right-angle plate. The outer edges of the right-angle plate, which are at 90° to each other, are connected to the protective cover 1 and the grid plate 2 respectively, thereby enhancing the stable connection structure between the protective cover 1 and the grid plate 2.

[0017] Specifically, refer to Figure 3 The grid plate 2 has multiple grid strips 21 arranged in a row. Two adjacent grid strips 21 form a grid gap 22. Each sound guide plate 4 has multiple rows of sound guide units 41 arranged in a row. Each sound guide unit 41 includes multiple sound guide holes 411. Each sound guide hole 411 is connected to the sound guide cavity 5. Each sound guide unit 41 is set for each grid gap 22, and the sound guide holes 411 are connected to the grid gap 22. It is worth mentioning that, in order to achieve better sound effects, the spacing of the grid gaps 22 in this embodiment is equal to the inner diameter of the sound guide holes 411.

[0018] Furthermore, a snap-fit ​​seat 23 for mounting support feet is provided on the side of the grid plate 2 near the arc-shaped transition portion 11. The snap-fit ​​seat 23 extends from the grid plate 2 into the sound-guiding cavity 5. The snap-fit ​​seat 23 is provided with a first through hole 231 and a second through hole 232 for the support feet to pass through. At the same time, the arc-shaped transition portion 11 is provided with an elastic member 112 that abuts against the support feet. The elastic member 112 is provided with a locking groove 1121. When the support feet pass through the first through hole 231 and the second through hole 232, the bottom of the locking groove 1121 abuts against the support feet. The support feet mentioned here need to be used in conjunction with the speaker housing of this embodiment, and the support feet provide support for the speaker housing; the elastic element 112 can be a silicone gasket or a rubber sleeve, which plays a buffering role when the support feet are impacted, and can also improve the installation stability of the support feet; the snap-fit ​​seat 23 can be a rectangular block structure or a circular column structure, which is intended to provide a fixing point for the support feet, and can also enhance the local strength of the grid plate 2.

[0019] Specifically, the outer wall of the reinforcing column 3 is provided with a plurality of first reinforcing ribs 31 circumferentially. In this embodiment, there are two reinforcing columns 3, spaced apart on the protective cover 1. Each reinforcing column 3 preferably has four first reinforcing ribs 31, which are evenly distributed along the outer wall of the reinforcing column 3. The axially evenly distributed annular ribs of the reinforcing column 3 can also be spiral reinforcing ribs, the purpose of which is to enhance the compressive and bending resistance of the reinforcing column 3, preventing deformation under external impact. When installing the speaker housing, the reinforcing column 3 abuts against the mounting position of the LCD TV, thereby effectively protecting the structure of the sound guide hole 411. Specifically, the sound guide plate 4 is made of carbon fiber composite high-strength polymer plastic sheet. The carbon fiber composite sheet is composed of carbon fiber and a resin matrix. The carbon fiber has high strength and high modulus, while the resin matrix acts as a bond and support, giving the carbon fiber composite sheet excellent mechanical properties and corrosion resistance. The high-strength polymer plastic sheet has an extremely high molecular weight, giving the material excellent strength and hardness, enabling it to withstand greater external forces and pressures, and making it less prone to deformation and breakage. In addition, the thickness of the sound guide plate 4 is set to 0.8mm-1mm. In this embodiment, a sound guide plate 4 with a thickness of 0.8mm is selected. This thickness can ensure the strength of the sound guide plate 4 and meet the requirements of the thin and light design of LCD TV.

[0020] Furthermore, the sound guide plate 4 is detachably installed on the upper surface of the grid plate 2. This detachable installation method can be achieved by screw connection, snap-on connection, or magnetic connection, which facilitates later maintenance and replacement. The implementation principle of this embodiment is as follows: a plastic shell including a protective cover 1, a grid plate 2, and a reinforcing column 3 is manufactured through an integral molding process. The protective cover 1 is designed with an arc-shaped transition part 11 and a mounting part 12, and the reinforcing column 3 is located between the two to enhance the structural strength. Next, the grid plate 2 is installed at the bottom of the protective cover 1 to form a sound guiding cavity 5, and a detachable carbon fiber composite sound guide plate 4 is installed on the grid plate 2. The sound guide plate 4 is provided with a sound guiding unit 41 corresponding to the grid gap 22. Subsequently, a first reinforcing plate 13 is added to the protective cover 1 and the grid plate 2 to enhance the connection stability. Qualitatively, a second reinforcing rib 111 and a first reinforcing rib 31 are respectively set on the protective cover 1 and the reinforcing column 3 to optimize acoustic performance and pressure resistance; a snap-fit ​​seat 23 is set on the grid plate 2 to install support feet, and an elastic element 112 is configured in the arc transition part 11 to provide buffering and fix the support feet; finally, ensure that all components are precisely assembled, especially the sound guide plate 4 is fixed to the grid plate 2 with a thickness of 0.8mm-1mm by screws, buckles or magnetic attraction, etc., to complete the production of the entire thin and light LCD TV sound guide shell, which is convenient for later maintenance and sound effect optimization.

[0021] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sound guide housing for a thin and light LCD TV, characterized in that, The device includes an integrally molded plastic housing and a sound guide plate (4). The housing includes a protective cover (1), a grid plate (2), and reinforcing pillars (3). The protective cover (1) is used to install on the mounting position of the LCD TV. The grid plate (2) is located at the bottom of the protective cover (1). The sound guide plate (4) is installed on the grid plate (2) and forms a sound guide cavity (5) with the protective cover (1). The sound guide plate (4) has several rows of sound guide units (41). Each row of sound guide units (41) includes several sound guide holes (411). Each sound guide hole (411) has... The grid plate (2) is connected to the sound guiding cavity (5) and has a plurality of grid strips (21) arranged thereon. Each grid strip (21) is located between two adjacent rows of sound guiding units (41), and the grid gap (22) formed by two adjacent grid strips (21) is connected to the sound guiding hole (411) of the corresponding sound guiding unit (41). The reinforcing column (3) is set on the protective cover (1). The reinforcing column (3) extends into the sound guiding cavity (5) and is located above the sound guiding plate (4). When the speaker is installed, the reinforcing column (3) abuts against the LCD TV.

2. The sound guide shell for a thin and light LCD TV according to claim 1, characterized in that, The sound guide plate (4) is a carbon fiber composite plate or a high-strength polymer plastic plate.

3. The sound guide housing for a thin and light LCD TV according to claim 2, characterized in that, The thickness of the sound guide plate (4) is 0.8mm-1mm.

4. The sound guide housing for a thin and light LCD TV according to claim 1, characterized in that, The outer wall of the reinforced column (3) is provided with a number of first reinforcing ribs (31) in the circumferential direction.

5. The sound guide housing for a thin and light LCD TV according to claim 1, characterized in that, An arc-shaped transition section (11) is provided on one side of the protective cover (1), and a number of second reinforcing ribs (111) are provided at intervals on the side of the arc-shaped transition section (11) near the sound guiding cavity (5).

6. The sound guide housing for a thin and light LCD TV according to claim 5, characterized in that, The protective cover (1) extends to the side away from the arc-shaped transition portion (11) and is provided with a mounting portion (12). The mounting portion (12) is provided with a mounting hole (121) for mounting the housing. The reinforcing column (3) is located between the arc-shaped transition portion (11) and the mounting portion (12).

7. The sound guide housing for a thin and light LCD TV according to claim 6, characterized in that, The protective cover (1) is provided with two first reinforcing plates (13) at intervals. Each first reinforcing plate (13) extends to the edge of the grid plate (2) away from the protective cover (1). The two first reinforcing plates (13) respectively abut against the two end faces of the sound guide plate (4). One first reinforcing plate (13) is located between the mounting part (12) and the reinforcing column (3), and the other first reinforcing plate (13) is located between the reinforcing column (3) and the arc-shaped transition part (11).

8. The sound guide housing for a thin and light LCD TV according to claim 5, characterized in that, The grid plate (2) is provided with a snap-fit ​​seat (23) on the side near the arc transition part (11), and the snap-fit ​​seat (23) extends into the sound guide cavity (5). The snap-fit ​​seat (23) is provided with a first through hole (231) and a second through hole (232) for the support foot to pass through.

9. A sound guide housing for a thin and light LCD TV according to claim 8, characterized in that, The arc-shaped transition portion (11) is provided with an elastic element (112) for abutting against the support foot. The elastic element (112) is provided with a locking groove (1121). When the support foot passes through the first through hole (231) and the second through hole (232), the bottom of the locking groove (1121) abuts against the support foot.

10. A sound guide housing for a thin and light LCD TV according to claim 1, characterized in that, The sound guide plate (4) is detachably installed on the upper surface of the grid plate (2).

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