Display device

Abstract

The present disclosure provides a display device. The display device comprises a display module, a back plate, a rear housing, a circuit board and a flame-retardant plate. The back plate covers the back surface of the display module, the rear housing is arranged on the side of the back plate facing away from the display module, the circuit board is arranged on the side of the back plate facing away from the display module and is located between the back plate and the rear housing, the flame-retardant plate is arranged between the back plate and the rear housing, the flame-retardant plate covers the circuit board, and the projection area of the flame-retardant plate on the back plate is smaller than the projection area of the rear housing on the back plate, wherein the flame-retardant grade of the material of the rear housing is lower than the flame-retardant grade of the material of the flame-retardant plate, and the rear housing is made of a flame-retardant material, wherein the flame-retardant grades are configured as: grades determined on the basis of the same standard and sorted in descending order of fire resistance performance. By providing the flame-retardant plate having a small size to cover the circuit board to meet safety certification requirements, the rear housing can be made of a low-cost material having a low flame-retardant grade, thereby greatly reducing the overall cost of the display device.

Description

A display device

[0001] Cross-reference to related applications

[0002] This disclosure claims priority to Chinese applications filed on November 13, 2024, No. 202422772813.4, and December 18, 2024, No. 202423135559.3, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of display device technology, and more particularly to a display device. Background Technology

[0004] With the continuous innovation and development of science and technology, display devices have become an indispensable household product in people's lives.

[0005] As one of the external protective components of a display device, the back cover is often made of plastic to achieve aesthetics, reduce weight, and lower costs. However, the circuit boards inside the display device generate a lot of heat during operation, which can pose a potential ignition point.

[0006] Therefore, controlling production costs while ensuring that the back cover meets relevant security standards plays an important role in improving the competitiveness of display device products. Summary of the Invention

[0007] This disclosure provides a display device in several embodiments, which may include: a display module; a back panel that may cover the back of the display module; a rear shell that may be disposed on the side of the back panel away from the display module; a circuit board that may be disposed on the side away from the display module and located between the back panel and the rear shell; and a flame-retardant plate that has a projected area on the back panel smaller than the projected area of ​​the rear shell on the back panel, and is disposed between the back panel and the rear shell, covering the circuit board; wherein the flame-retardant rating of the material of the rear shell is lower than the flame-retardant rating of the material of the flame-retardant plate, and the material of the rear shell is a flame-retardant material, and the flame-retardant rating is configured as: a rating arranged in descending order of fire resistance performance according to the same standard. Attached Figure Description

[0008] Figure 1 is a schematic diagram of the structure of a display device according to some embodiments;

[0009] Figure 2 is a first cross-sectional view of a display device according to some embodiments along the AA direction in Figure 1;

[0010] Figure 3 is a second cross-sectional view of a display device according to some embodiments along the AA direction in Figure 1;

[0011] Figure 4 is a schematic diagram of a flame-retardant plate installed on the rear shell according to some embodiments;

[0012] Figure 5 is a partial enlarged view of point M in Figure 4 according to some embodiments;

[0013] Figure 6 is a partial enlarged view of point N in Figure 4 according to some embodiments;

[0014] Figure 7 is a structural schematic diagram of the flame-retardant plate in Figure 4 according to some embodiments;

[0015] Figure 8 is a schematic diagram of the structure of the rear shell according to some embodiments;

[0016] Figure 9 is a schematic diagram of a first structure according to some embodiments of the flame-retardant plate installed on the back plate;

[0017] Figure 10 is a structural schematic diagram of the flame-retardant plate in Figure 9 according to some embodiments;

[0018] Figure 11 is a structural schematic diagram of the back plate in Figure 9 according to some embodiments;

[0019] Figure 12 is a schematic diagram of a second structure according to some embodiments, in which a flame-retardant plate is installed on a back plate;

[0020] Figure 13 is a structural schematic diagram of the back plate in Figure 12 according to some embodiments;

[0021] Figure 14 is a structural schematic diagram of the flame-retardant plate in Figure 12 according to some embodiments;

[0022] Figure 15 is a structural schematic diagram of the flame-retardant plate in Figure 12 from another perspective according to some embodiments;

[0023] Figure 16 is a partial structural schematic diagram of a display device according to some embodiments;

[0024] Figure 17 is a schematic diagram of the connection of the flame-retardant plate on the rear shell according to some embodiments;

[0025] Figure 18 is a schematic diagram of the back side of the back panel according to some embodiments;

[0026] Figure 19 is a structural schematic diagram of the rear shell from one perspective according to some embodiments;

[0027] Figure 20 is a structural schematic diagram of the rear shell from another perspective according to some embodiments;

[0028] Figure 21 is an enlarged view of point A in Figure 20 according to some embodiments;

[0029] Figure 22 is an enlarged view of point B in Figure 17 according to some embodiments;

[0030] Figure 23 is another structural schematic diagram of a flame-retardant plate according to some embodiments;

[0031] Figure 24 is an enlarged view of point C in Figure 23 according to some embodiments;

[0032] Key reference numerals: 100 - Display device; 11 - Display module; 11a - Display surface; 11b - Back side; 12 - Back plate; 121 - First connecting part; 122 - Fourth snap-fit ​​part; 123 - Second threaded hole; 124 - Guide boss; 1241 - First guide slope; 125 - Second mating part; 13 - Rear shell; 131 - Second connecting part; 132 - Second snap-fit ​​part; 133 - First threaded hole; 134 - First mating part; 14 - Circuit board; 15 - Flame retardant plate; 15a - Cover plate; 15b - Base plate; 15c - Opening; 15d - Receiving cavity; 15e - Heat dissipation hole; 15f - Connecting plate; 15f1 - First plate body; 15f2 - Second plate body; 15f3 - Third plate body; 151 - First snap-fit ​​part; 152 - First through hole; 1 53-First positioning part; 154-Third snap-fit ​​part; 155-Second through hole; 156a-Recessed part; 156b-Guide rib; 156c-Reinforcing rib; 1561-Second guide slope; 157-Second positioning part; 158-Cable channel; 16-Flame-retardant elastic layer; 110-First area; 120-Second area; 310-Snap-fit; 311-Stop section; 312-Latch section; 313-Limiting rib; 314-Reinforcing rib; 320-Fixing hole; 410-Snap hole; 420-Guide rib; 421-Guide surface; 430-Allowing hole; 440-Through hole. Detailed Implementation

[0033] With continuous innovation and development in science and technology, display devices, as a type of mass-market, traditional household product within consumer electronics, have gradually become an indispensable part of people's lives. In a market environment of constant technological and service innovation, maintaining product competitiveness is crucial for preserving brand market share. As one of the external protective components of display devices, controlling production costs while ensuring that the back cover meets relevant security standards plays a vital role in enhancing the competitiveness of display device products.

[0034] Taking televisions as an example of display devices, related technologies typically focus on the selection of materials for the back cover to balance cost and safety. To reduce the weight of the display device and improve its aesthetics, related technologies often use plastic materials for the back cover.

[0035] However, the circuit boards in the display device generate a lot of heat during operation, which can be a potential ignition point. When the display device malfunctions and heats up, the heat may accumulate to a certain level and cause the circuit board to catch fire, which may further ignite the plastic back cover or internal parts, and may even cause a fire.

[0036] Furthermore, the back cover in related technologies is usually a one-piece structure for ease of assembly, meaning that only one type of material can typically be used for the entire back cover. However, to meet safety certification requirements, the entire back cover of display devices in related technologies needs to be made of flame-retardant materials with high flame-retardant ratings. These high-flame-retardant materials are relatively expensive, resulting in higher manufacturing costs for the display devices.

[0037] However, in practical applications, applicants have found that the material covering the circuit board on the back cover only needs to meet security regulations, while other areas do not need to use materials that meet security regulations. Compared to materials that do not meet security regulations, materials that do meet security regulations are more expensive.

[0038] Therefore, the applicant installed a flame-retardant plate with a high flame-retardant rating between the back panel and the rear shell to cover the circuit board, so that the rear shell does not need to use flame-retardant materials with a high flame-retardant rating to meet the safety requirements.

[0039] Because the projected area of ​​the flame-retardant plate on the back panel is smaller than that of the back shell on the back panel, and the size of the flame-retardant plate is smaller than that of the back shell, compared to using high-cost flame-retardant materials with high flame-retardant grades for the entire back shell, the use of high-cost flame-retardant materials with high flame-retardant grades is reduced, thereby significantly reducing the overall cost of the display device.

[0040] The technical solutions of some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0041] Please refer to Figure 1, which is a schematic diagram of the structure of a display device according to some embodiments. The display device 100 provided in this disclosure embodiment may be a plate-like structure, such as a rectangular columnar structure, a square columnar structure, etc.

[0042] Referring to Figure 2, the display device 100 provided in this embodiment includes a display module 11. The display module 11 has a display surface 11a and a back surface 11b disposed opposite to each other. The display surface 11a of the display module 11 is mainly used for displaying images. The display module 11 may include, but is not limited to, a liquid crystal display (LCD), an organic light-emitting diode display (OLED), or other display screens capable of displaying images. This disclosure does not specifically limit the implementation in this regard.

[0043] In some embodiments, the display device 100 provided in this disclosure further includes a back plate 12, which covers the back side 11b of the display module 11, that is, the back plate 12 is disposed on the rear side of the display module 11, and the back plate 12 locks and fixes the display module 11 from the back side 11b of the display module 11, thereby supporting the display module 11.

[0044] In some embodiments, the display device 100 provided in this disclosure further includes a rear shell 13, which is disposed on the side of the back panel 12 away from the display module 11 and serves as a protective and decorative element.

[0045] In some embodiments, the display device 100 provided in this disclosure further includes a circuit board 14, which is disposed on the side of the back plate 12 away from the display module 11 and located between the back plate 12 and the rear cover 13. Thus, the circuit board 14 can be covered by the rear cover 13, which protects the circuit board 14 from water, dust, and contact.

[0046] In some embodiments, circuit board 14 may be a power supply board, which is used to connect to an external power source, such as AC mains, and convert 220V AC mains power into power available to other circuit boards 14. Specifically, the power supply board may be provided with devices such as transformers and rectifiers, and may also be provided with live wire terminals and neutral wire terminals respectively connected to the live wire and neutral wire.

[0047] In some embodiments, the circuit board 14 may be a driver board, which is mainly used to process and drive the display module 11 of the display device 100 to display images and videos.

[0048] In some embodiments, circuit board 14 includes a power supply board and a driver board. The power supply board is used to connect to an external power source, such as AC mains, and convert the 220-volt AC mains power into a power source usable by other circuit boards 14. Specifically, the power supply board may be equipped with devices such as transformers and rectifiers, and also has live wire terminals and neutral wire terminals respectively connected to the live wire and neutral wire. The driver board is mainly used to process and drive the display module 11 of the display device 100 to display images and videos.

[0049] In some embodiments, the flame-retardant plate 15 includes a first fireproof cover and a second fireproof cover, the first fireproof cover being used to cover the power board and the second fireproof cover being used to cover the drive board.

[0050] Please refer to Figures 2 and 3. The display device 100 provided in this embodiment of the present disclosure also includes a flame-retardant plate 15. The flame-retardant plate 15 is disposed between the back plate 12 and the rear shell 13, and the projected area of ​​the flame-retardant plate 15 on the back plate 12 is smaller than the projected area of ​​the rear shell 13 on the back plate 12. The flame-retardant plate 15 covers the circuit board 14, which is a high-heat component, so as to isolate and delay the flame when the circuit board 14 catches fire, prevent the spread of the flame, and play a fire protection role. This allows the rear shell 13 to meet safety specifications without having to use flame-retardant materials with high flame-retardant ratings.

[0051] Specifically, the flame retardant rating of the material of the back cover 13 is lower than that of the flame retardant material of the flame retardant plate 15. That is to say, in this embodiment of the present disclosure, only the flame retardant plate 15 covering the circuit board 14 can be made of a high-cost flame retardant material with a high flame retardant rating, while the back cover 13 can be made of a low-cost flame retardant material with a lower flame retardant rating than the flame retardant plate 15. Since the projected area of ​​the flame retardant plate 15 on the back plate 12 is smaller than the projected area of ​​the back cover 13 on the back plate 12, and the size of the flame retardant plate 15 is smaller than the size of the back cover 13, compared to the method of using a high-cost flame retardant material with a high flame retardant rating for the entire back cover 13, the use of high-cost flame retardant material with a high flame retardant rating is reduced, thereby significantly reducing the overall cost of the display device 100.

[0052] The flame retardant rating is configured as follows: a rating arranged in descending order of fire resistance performance, determined according to the same standard (e.g., UL94 standard).

[0053] In some embodiments, the material of the back cover 13 is a flame-retardant material with a flame-retardant rating lower than that of the flame-retardant plate 15, or the flame-retardant rating of the material of the back cover 13 is higher than or equal to the HB rating required in the UL94 standard, so that the back cover 13 also has a certain flame-retardant performance. At the same time, since the flame-retardant plate 15 covers the circuit board 14 and the back cover 13 covers the flame-retardant plate 15, the circuit board 14 can be provided with a dual flame-retardant effect, thereby improving the flame-retardant performance of the display device 100 and thus improving the safety of the display device 100.

[0054] It should be noted that when this disclosure is made by coating the surface of the flame-retardant plate 15 or the rear shell 13 with flame-retardant material to give the flame-retardant plate 15 or the rear shell 13 flame-retardant properties, the flame-retardant rating of the material of the flame-retardant plate 15 or the rear shell 13 refers to the flame-retardant rating of the flame-retardant material on the surface of the flame-retardant plate 15 or the rear shell 13.

[0055] In some embodiments, the flame retardant material of the flame retardant plate 15 may be of the V1 or V0 level required by the UL94 standard, and the flame retardant material of the back shell 13 may be of the HB level (specifically HB75 level) or V2 level required by the UL94 standard.

[0056] In some embodiments, the flame-retardant plate 15 may be made of: acrylonitrile-butadiene-styrene (ABS), a polymer of acrylonitrile-butadiene-styrene and polycarbonate (ABS with added PC, also known as PC+ABS), or a polymer of acrylonitrile-butadiene-styrene and polypropylene (ABS with added PP, also known as PP+ABS), etc. The back shell 13 may be made of: impact-resistant polystyrene (HIPS).

[0057] In some embodiments, as shown in Figures 3 and 4, the flame-retardant plate 15 includes a cover plate 15a and a base plate 15b. The cover plate 15a is disposed on the side of the circuit board 14 away from the back plate 12 and is connected to the rear shell 13. The base plate 15b extends from the bottom edge of the cover plate 15a toward the back plate 12 and abuts against the back plate 12, so that the cover plate 15a, the base plate 15b, and the back plate 12 enclose a receiving cavity 15d with an opening 15c. Specifically, the top edge, left side, and right side of the cover plate 15a are all spaced apart from the back plate 12 to form an opening 15c. The circuit board 14 is located in the receiving cavity 15d. This arrangement allows the base plate 15b to prevent flames from falling while the circuit board 14 can dissipate heat through the opening 15c, thus avoiding the problem of short circuits caused by overheating of the circuit board 14 during operation and improving the safety of the circuit board 14.

[0058] In some embodiments, the base plate 15b is provided with a heat dissipation hole 15e extending along its thickness direction, which communicates with the receiving cavity 15d. With this configuration, the circuit board 14 can dissipate heat through both the opening 15c and the heat dissipation hole 15e, better preventing short circuits caused by overheating during operation and improving the safety of the circuit board 14.

[0059] In some embodiments, the flame-retardant plate 15 further includes a connecting plate 15f, which extends from the side of the bottom plate 15b away from the cover plate 15a in a direction away from the cover plate 15a. The connecting plate 15f and the cover plate 15a are located on different sides of the bottom plate 15b in its thickness direction, so that the flame-retardant plate 15 has a generally Z-shaped structure, and the connecting plate 15f abuts against the back plate 12.

[0060] Compared to the method of contact between the base plate 15b and the back plate 12, since the base plate 15b is usually thinner, the contact area between the base plate 15b and the back plate 12 is smaller. Therefore, the setting of the connecting plate 15f can increase the contact area between the flame retardant plate 15 and the back plate 12, avoid the force of the flame retardant plate 15 on the back plate 12 being too concentrated, and thus reduce the damage to the back plate 12.

[0061] As shown in Figures 3 and 4, the flame-retardant plate 15 can be installed on the rear shell 13. For example, the flame-retardant plate 15 can be connected to the rear shell 13 through the cover plate 15a and / or the bottom plate 15b. In this way, the flame-retardant plate 15 and the rear shell 13 can be assembled in the factory to form a prefabricated component, and then transported to the next factory to be assembled with the back plate 12 to form the display device 100. This can effectively simplify the assembly process of the display device 100, making the assembly of the display device 100 faster and more efficient.

[0062] When the flame-retardant plate 15 is installed on the rear shell 13 and the rear shell 13 is exposed, it is easily deformed by compression. When the rear shell 13 deforms, the flame-retardant plate 15 will shift along with the deformation of the rear shell 13, resulting in an increase in the gap between the flame-retardant plate 15 and the back plate 12, which does not meet the safety requirement that the gap between the flame-retardant plate 15 and the back plate 12 is less than 1mm.

[0063] In this regard, the display device 100 provided in the present disclosure embodiment may further include a flame-retardant elastic layer 16, such as flame-retardant foam or flame-retardant sponge, etc. The flame-retardant elastic layer 16 is disposed between the flame-retardant plate 15 and the back plate 12, and the flame-retardant elastic layer 16 is pressed by the flame-retardant plate 15 and the back plate 12. Specifically, the flame-retardant elastic layer is disposed between the bottom plate 15b and the back plate 12, and is pressed by the bottom plate 15b and the back plate 12.

[0064] Thus, when the flame-retardant plate 15 shifts due to the deformation of the rear shell 13, causing the gap between the bottom plate 15b and the back plate 12 to increase, the flame-retardant elastic layer 16 will adapt by deforming and expanding, filling and blocking the gap between the bottom plate 15b and the back plate 12. The flame-retardant elastic layer 16 is used to isolate and delay the flame, preventing the flame from spreading from the gap between the bottom plate 15b and the back plate 12, thereby ensuring that even if the gap between the bottom plate 15b and the back plate 12 increases, it still meets the safety requirements.

[0065] In some embodiments, the flame-retardant elastic layer 16 can be bonded between the base plate 15b and the back plate 12. This configuration provides a stable and reliable connection, is simple and efficient to operate, and facilitates disassembly and replacement.

[0066] In order to better prevent the deformation and bulging of the rear shell 13 from causing the flame retardant plate 15 to shift, resulting in a gap between the bottom plate 15b and the back plate 12 being greater than 1mm, which does not meet the safety requirement that the gap between the bottom plate 15b and the back plate 12 be less than 1mm.

[0067] In some embodiments, as shown in FIG3, the back plate 12 is provided with a first connecting part 121, and the rear shell 13 is provided with a second connecting part 131. The second connecting part 131 and the first connecting part 121 are connected in cooperation, and the second connecting part 131 and the first connecting part 121 are located on the side of the bottom plate 15b away from the circuit board 14.

[0068] With this configuration, the first connecting part 121 and the second connecting part 131 are positioned close to the flame-retardant elastic layer 16, which enhances the structural stability of the rear shell 13 and the back plate 12 near the flame-retardant elastic layer 16. This makes the area less prone to deformation and minimizes the possibility of the rear shell 13 deforming and bulging outward, causing the flame-retardant plate 15 to shift and thus increasing the gap between the bottom plate 15b and the back plate 12. Even if the rear shell 13 deforms, the first connecting part 121 and the second connecting part 131 can still move the back plate 12 together. At this time, the back plate 12 will push the flame-retardant plate 15 and the flame-retardant elastic layer 16 to shift together, thereby ensuring that the gap between the bottom plate 15b and the back plate 12 can remain as constant as possible, thus ensuring that the gap between the flame-retardant plate 15 and the back plate 12 meets the safety requirements.

[0069] In addition, the first connecting part 121 and the second connecting part 131 are located on the side of the base plate 15b facing away from the circuit board 14, so as to avoid interference between the first connecting part 121, the second connecting part 131 and the circuit board 14.

[0070] In some embodiments, the first connecting portion 121 may be a first connecting hole formed on the back plate 12, and the second connecting portion 131 may be a second connecting hole formed on the rear shell 13. The second connecting hole and the first connecting hole are locked together by threaded fasteners such as screws or bolts, so that the connection stability between the rear shell 13 and the back plate 12 is relatively high.

[0071] In some embodiments, both the first connecting portion 121 and the second connecting portion 131 can be snap-fit ​​structures. For example, the first connecting portion 121 is a snap-fit, and the second connecting portion 131 is a matching snap hole, or the first connecting portion 121 is a snap hole, and the second connecting portion 131 is a matching snap-fit. That is, the first connecting portion 121 and the second connecting portion 131 are snap-fit ​​connected.

[0072] For ease of description, the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15 is defined as L. It is understood that the above definition is merely for the convenience of description and should not be used to limit the scope of protection of this disclosure. If L < 0.5 mm, the thickness of the flame-retardant elastic layer 16 is too small, resulting in poor flame-retardant performance. Therefore, in some embodiments, L ≥ 0.5 mm can be set to ensure that the flame-retardant elastic layer 16 has a certain thickness, thereby improving the flame-retardant performance of the flame-retardant elastic layer 16.

[0073] If L > 1 mm, the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15 is too large, failing to meet the safety requirement that the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15 be less than 1 mm. Therefore, in some embodiments, L ≤ 1 mm can be set. This setting ensures that the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15 meets the safety requirement of being less than 1 mm. It also allows the flame-retardant elastic layer 16 to have sufficient elastic deformation. When the flame-retardant plate 15 shifts due to the deformation of the rear shell 13, causing the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15 to increase, the gap is fully filled and blocked, thus better isolating and delaying the flame and preventing the flame from spreading through the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15.

[0074] In some embodiments, 0.5mm ≤ L ≤ 1mm, for example, 0.5mm ≤ L ≤ 0.6mm, 0.6mm ≤ L ≤ 0.7mm, 0.7mm ≤ L ≤ 0.8mm, or 0.9mm ≤ L ≤ 1mm. Specifically, L can be set to 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1mm, etc. This design avoids an excessively large gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15, ensuring that the gap meets the safety requirement of less than 1mm. It also allows the flame-retardant elastic layer 16 to have sufficient elastic deformation. When the flame-retardant plate 15 shifts due to the deformation of the rear shell 13, causing the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15 to widen, the gap is fully filled and blocked, thus better isolating and delaying the flame and preventing the flame from spreading through the gap between the bottom plate 15b and the back plate 12 of the flame-retardant plate 15.

[0075] In this embodiment of the disclosure, the flame-retardant plate 15 can be installed on the rear shell 13 by snap-fit, and / or the flame-retardant plate 15 can be installed on the rear shell 13 by screwing. That is, the flame-retardant plate 15 can be installed on the rear shell 13 by snap-fit ​​alone, or by screwing alone, or by a combination of snap-fit ​​and screwing.

[0076] In some embodiments, as shown in FIG4, the flame-retardant plate 15 is installed on the rear shell 13 by means of snap-fit ​​and screw-fit. This arrangement ensures that at least two connection positions are formed between the flame-retardant plate 15 and the rear shell 13, for example, at least one connection position is formed at the snap-fit ​​point and at least one connection position is formed at the screw-fit point. This helps to improve the connection stability between the flame-retardant plate 15 and the rear shell 13, and avoids the flame-retardant plate 15 from loosening and detaching from the rear shell 13 during the process of transporting the flame-retardant plate 15 together with the rear shell 13 to the next assembly process (i.e., the process of assembling with the back plate 12). At the same time, both the snap-fit ​​and screw-fit connection methods are relatively simple and facilitate the assembly between the flame-retardant plate 15 and the rear shell 13.

[0077] As shown in Figures 4 and 6, when the flame-retardant plate 15 is installed on the rear shell 13 by snap-fit, the bottom plate 15b of the flame-retardant plate 15 is provided with a first snap-fit ​​part 151, and the rear shell 13 is provided with a second snap-fit ​​part 132. The second snap-fit ​​part 132 and the first snap-fit ​​part 151 are snapped together, thereby realizing the snap-fit ​​installation of the flame-retardant plate 15 on the rear shell 13.

[0078] Furthermore, the first latching part 151 and the second latching part 132 are located on the side of the base plate 15b away from the circuit board, so that the probability of flames falling to the first latching part 151 and the second latching part 132 can be reduced by the base plate 15b and the flame-retardant elastic layer 16.

[0079] In some embodiments, as shown in Figures 7 and 8, there can be multiple first latching portions 151 and second latching portions 132, such as two, three, four, five, six, seven, eight, etc. For example, Figures 7 and 8 show that there can be seven first latching portions 151 and seven second latching portions 132. Multiple first latching portions 151 are spaced apart along the circumferential edge of the flame-retardant plate 15, with three first latching portions 151 located on the bottom plate 15b and the remaining four on the cover plate 15a. Multiple second latching portions 132 are spaced apart along the circumferential edge of the rear shell 13, and the multiple second latching portions 132 and the multiple first latching portions 151 are engaged one-to-one.

[0080] The arrangement of multiple first latching parts 151 and multiple second latching parts 132 helps to improve the stability between the flame-retardant plate 15 and the rear shell 13.

[0081] In this case, one of the first latching part 151 and the second latching part 132 is a hook and the other is a slot. For example, as shown in Figures 7 and 8, the first latching part 151 is a hook and the second latching part 132 is a slot.

[0082] In the embodiments of this disclosure, for ease of description, the effective engagement amount of the hook and the slot is defined as D. It is understood that the above definition is only for the convenience of the description of this disclosure, and should not be used to limit the scope of protection of this disclosure.

[0083] If D < 1.5mm, the hook is easy to detach from the slot, causing the flame-retardant plate 15 to detach from the back cover 13.

[0084] In some embodiments, D≥1.5mm, to ensure the stability and reliability of the connection between the hook and the slot, to ensure the connection stability and reliability of the flame retardant plate 15 and the rear shell 13, and to prevent the two from becoming loose during the process of turnover to the next process.

[0085] If D > 4.5mm, the size of the hook and slot will be relatively large, which will increase the overall size of the flame retardant plate 15 and the back cover 13, which is not conducive to the miniaturization design of the display device.

[0086] In some embodiments, D≤4.5mm, so that there is sufficient engagement between the hook and the slot, ensuring the connection stability and reliability of the hook and the slot, and preventing the hook from coming loose from the slot during the material turnover process of the assembly formed by the flame retardant plate 15 and the rear shell 13, which would cause the flame retardant plate 15 to detach from the rear shell 13.

[0087] In some embodiments, 1.5mm ≤ D ≤ 4.5mm, for example, 1.5mm ≤ D ≤ 2mm, 2mm ≤ D ≤ 2.5mm, 2.5mm ≤ D ≤ 3mm, 3mm ≤ D ≤ 3.5mm, 3.5mm ≤ D ≤ 4mm, or 4mm ≤ D ≤ 4.5mm. For example, D = 1.5mm, 1.7mm, 2mm, 2.3mm, 2.5mm, 2.8mm, 3mm, 3.3mm, 3.5mm, 3.7mm, 4mm, 4.3mm, or 4.5mm, etc.

[0088] This design ensures sufficient engagement between the hook and slot, guaranteeing the stability and reliability of their connection and improving the stability and reliability of the connection between the flame-retardant plate 15 and the rear shell 13. It also prevents the size of the hook and slot from increasing the overall size of the display device, which would be detrimental to the miniaturization design of the display device.

[0089] As shown in Figures 4, 7 and 8, when the flame-retardant plate 15 is installed on the rear shell 13 by means of a threaded connection, the flame-retardant plate 15 is provided with a first through hole 152, the rear shell 13 is provided with a first threaded hole 133, and the display device also includes a first threaded locking member (not shown), which passes through the first through hole 152 and is threadedly connected to the first threaded hole 133, thereby realizing the flame-retardant plate 15 being screwed onto the rear shell 13.

[0090] In some embodiments, there can be multiple first threaded locking elements, first through holes 152, and first threaded holes 133, such as two, three, four, five, six, seven, eight, etc. For example, Figures 7 and 8 show that there can be five first through holes 152 and five first threaded holes 133. Multiple first through holes 152 are spaced apart along the circumferential edge of the flame-retardant plate 15, and multiple first threaded holes 133 are spaced apart along the circumferential edge of the rear shell 13. The multiple first threaded holes 133 and multiple first through holes 152 are arranged in a one-to-one correspondence, and multiple first threaded locking elements pass through the corresponding first through holes 152 and are screwed into the corresponding first threaded holes 133.

[0091] The arrangement of multiple first threaded locking parts, multiple first through holes 152 and multiple first threaded holes 133 is beneficial to improving the stability between the flame-retardant plate 15 and the rear shell 13.

[0092] The first threaded locking element can be a screw or bolt, etc.

[0093] In some embodiments, as shown in Figures 5 to 8, one of the base plate 15b and the rear shell 13 of the flame-retardant plate 15 is provided with a first positioning part 153, and the other of the base plate 15b and the rear shell 13 is provided with a first mating part 134. For example, the base plate 15b of the flame-retardant plate 15 is provided with the first positioning part 153, and the rear shell 13 is provided with the first mating part 134. The first mating part 134 is engaged with the first positioning part 153. The engagement of the first positioning part 153 and the first mating part 134 provides initial positioning for the fixed connection of the flame-retardant plate 15 and the rear shell 13, thereby improving the assembly efficiency of the flame-retardant plate 15 and the rear shell 13.

[0094] Meanwhile, since the first positioning part 153 and the first mating part 134 are located on the side of the base plate 15b away from the circuit board, the probability of flames falling onto the first positioning part 153 and the first mating part 134 can be reduced by the base plate 15b and the flame-retardant elastic layer 16.

[0095] Wherein, when the first positioning part 153 is a positioning groove, the first mating part 134 is a positioning protrusion that matches the positioning groove; and when the first positioning part 153 is a positioning protrusion, the first mating part 134 is a positioning groove that matches the positioning protrusion, and the positioning protrusion is inserted into the positioning groove.

[0096] In some embodiments, there can be multiple first positioning portions 153 and first mating portions 134, such as two, three, four, five, six, seven, eight, etc. For example, Figures 7 and 8 show that there can be seven first positioning portions 153 and seven first mating portions 134. Multiple first positioning portions 153 are spaced apart along the circumferential edge of the flame-retardant plate 15, with three first positioning portions 153 located on the bottom plate 15b and the remaining four on the cover plate 15a. Multiple first mating portions 134 are spaced apart along the circumferential edge of the rear shell 13, and the multiple first mating portions 134 and the multiple first positioning portions 153 are connected in a one-to-one correspondence.

[0097] The arrangement of multiple first positioning parts 153 and multiple first mating parts 134 is beneficial to improving the positioning accuracy between the flame-retardant plate 15 and the rear shell 13.

[0098] When the first latching part 151, the second latching part 132, the first positioning part 153, and the first mating part 134 are all present, and the number of the first latching part 151, the second latching part 132, the first positioning part 153, and the first mating part 134 are the same, a positioning structure (including the first positioning part 153 and the first mating part 134) is provided near each set of latching structures (which includes the first latching part 151 and the second latching part 132) to ensure that the first latching part 151 can be accurately latched with the second latching part 132, thereby ensuring that the first latching part 151 and the second latching part 132 are reliably latched.

[0099] Moreover, it is understood that the height of the positioning protrusion relative to the flame-retardant plate 15 or the rear shell 13 in this disclosure is greater than the height of the hook relative to the flame-retardant plate 15 or the rear shell 13, so as to ensure that the positioning protrusion and positioning groove first play a role in the process of assembling the flame-retardant plate 15 to the rear shell 13, providing initial positioning for the fixed connection of the flame-retardant plate 15 and the rear shell 13, so as to facilitate the installation of the flame-retardant plate 15 and the rear shell 13.

[0100] As an alternative implementation, as shown in FIG9, the flame-retardant plate 15 can be installed on the back plate 12.

[0101] This design prevents the flame-retardant plate 15 from shifting due to deformation of the back cover 13, ensuring that the gap between the flame-retardant plate 15 and the back plate 12 remains unchanged after the display device is assembled. Consequently, the gap between the flame-retardant plate 15 and the back plate 12 can be maintained within the range that meets safety regulations, thereby improving the safety of the display device.

[0102] In addition, when the flame-retardant plate 15 is used to cover the drive board, it also makes it easier to organize the wiring of the drive board, making the wiring layout neater and avoiding wiring chaos.

[0103] In this embodiment of the disclosure, the flame-retardant plate 15 can be installed on the back plate 12 by snap-fit, and / or the flame-retardant plate 15 can be installed on the back plate 12 by screwing. That is, the flame-retardant plate 15 can be installed on the back plate 12 by snap-fit ​​alone, or by screwing alone, or by a combination of snap-fit ​​and screwing.

[0104] Preferably, the flame-retardant plate 15 is installed on the back plate 12 by means of snap-fit ​​and screw-fit.

[0105] This arrangement ensures that at least two connection points are formed between the flame-retardant plate 15 and the back plate 12. For example, at least one connection point is formed at the snap-fit ​​joint between the flame-retardant plate 15 and the back plate 12, and at least one connection point is formed at the screw joint joint between the flame-retardant plate 15 and the back plate 12. This helps to improve the connection stability between the flame-retardant plate 15 and the back plate 12, and prevents the flame-retardant plate 15 from becoming loose and detaching from the back plate 12 during the process of transporting the flame-retardant plate 15 together with the back plate 12 to the next assembly process (i.e., the process of assembling with the back plate 12). At the same time, whether it is a snap-fit ​​or a screw joint, the connection method is relatively simple and facilitates the assembly between the flame-retardant plate 15 and the back plate 12.

[0106] As shown in Figures 9 to 11, when the flame-retardant plate 15 is installed on the back plate 12 by snap-fit, the flame-retardant plate 15 is provided with a third snap-fit ​​part 154, and the back plate 12 is provided with a fourth snap-fit ​​part 122. The fourth snap-fit ​​part 122 and the third snap-fit ​​part 154 are snapped together, thereby realizing the snap-fit ​​installation of the flame-retardant plate 15 on the back plate 12.

[0107] In some embodiments, there can be multiple third latching portions 154 and fourth latching portions 122, such as two, three, four, five, six, seven, eight, etc. For example, Figures 10 and 11 show that there can be two third latching portions 154 and two fourth latching portions 122. Multiple third latching portions 154 are spaced apart on the flame-retardant plate 15, and multiple fourth latching portions 122 are spaced apart on the back plate 12. The multiple fourth latching portions 122 and the multiple third latching portions 154 are engaged in a one-to-one correspondence.

[0108] The arrangement of multiple third latching parts 154 and multiple fourth latching parts 122 helps to improve the stability between the flame-retardant plate 15 and the back plate 12.

[0109] In this design, one of the third latching part 154 and the fourth latching part 122 is a hook and the other is a slot. For example, as shown in Figures 10 and 11, the third latching part 154 is a hook and the fourth latching part 122 is a slot.

[0110] As shown in Figures 12 to 14, when the flame-retardant plate 15 is installed on the back plate 12 by means of a threaded connection, the connecting plate 15f of the flame-retardant plate 15 is provided with a second through hole 155, the back plate 12 is provided with a second threaded hole 123, and the display device 100 also includes a second threaded locking member (not shown). The second threaded locking member passes through the second through hole 155 and is threadedly connected to the second threaded hole 123, thereby realizing the flame-retardant plate 15 being screwed onto the back plate 12.

[0111] In some embodiments, there can be multiple second threaded locking elements, second through holes 155, and second threaded holes 123, such as two, three, four, five, six, seven, eight, etc. For example, Figures 10 and 11 show that there can be two second through holes 155 and two threaded holes 123, while Figures 13 and 14 show that there can be four second through holes 155 and four threaded holes 123. Multiple second through holes 155 are spaced apart on the flame-retardant plate 15, and multiple second threaded holes 123 are spaced apart on the back plate 12. The multiple second threaded holes 123 and multiple second through holes 155 are arranged in a one-to-one correspondence, and multiple second threaded locking elements pass through the corresponding second through holes 155 and are screwed into the corresponding second threaded holes 123 one by one.

[0112] The arrangement of multiple second threaded locking elements, multiple second through holes 155, and multiple second threaded holes 123 helps to improve the stability between the flame-retardant plate 15 and the back plate 12.

[0113] The second threaded locking element can be a screw or bolt, etc.

[0114] In some embodiments, as shown in Figures 9 and 11, a guide boss 124 is provided on the surface of the back plate 12 facing the flame retardant plate 15. In the direction from the back plate 12 to the flame retardant plate 15, the outer peripheral side of the guide boss 124 gradually slopes from the back plate 12 toward the center of the guide boss 124 to form a first guide slope 1241. The connecting plate 15f of the flame retardant plate 15 is provided with a second guide slope 1561 that fits against the first guide slope 1241.

[0115] This design allows the base plate 15b to prevent flames from falling while extending the connecting plate 15f to provide a position for the guiding design of the flame-retardant plate 15. This facilitates the formation of a second guide slope 1561 on the flame-retardant plate 15, which cooperates with the first guide slope 1241. As a result, during the assembly of the flame-retardant plate 15 to the back plate 12, the first guide slope 1241 and the second guide slope 1561 cooperate with each other to provide guidance for the assembly of the flame-retardant plate 15 and the back plate 12, making the assembly of the two easier.

[0116] In some embodiments, as shown in Figures 9 to 11, the connecting plate 15f includes a first plate 15f1, a second plate 15f2, and a third plate 15f3. The first plate 15f1 extends from the side of the bottom plate 15b away from the cover plate 15a in a direction away from the cover plate 15a. The second plate 15f2 extends from the side of the first plate 15f1 away from the bottom plate 15b in a direction away from the bottom plate 15b. The third plate 15f3 extends from the side of the second plate 15f2 away from the first plate 15f1 in a direction away from the first plate 15f1. A recess 156a is formed on the surface of the third plate 15f3 facing the back plate 12 in a direction away from the back plate 12. A second guide slope 1561 is formed on the groove wall of the recess 156a.

[0117] In some embodiments, as shown in Figures 13 and 15, a guide rib 156b is protruding from the surface of the connecting plate 15f facing the back plate 12, and the guide rib 156b forms a second guide slope 1561 that fits against the first guide slope 1241.

[0118] Therefore, the formation of the second guide slope 1561 is not limited to a specific form. It can be formed by setting a recessed portion 156a and using the groove wall of the recessed portion 156a, or by setting a protruding guide rib 156b and using the guide rib 156b to form the second guide slope 1561. This makes the formation of the second guide slope 1561 more flexible, reduces the limitations of the formation of the second guide slope 1561, and facilitates the formation of the second guide slope 1561.

[0119] When the connecting plate 15f has a guide rib 156b protruding from its surface facing the back plate 12, as shown in FIG15, the connecting plate 15f also has a reinforcing rib 156c protruding from its surface facing the back plate 12, the reinforcing rib 156c being set at an angle to the guide rib 156b; and / or, the bottom plate 15b has a reinforcing rib 156c protruding from its surface facing the circuit board, the reinforcing rib 156c extending to connect with the guide rib 156b.

[0120] This design allows the reinforcing rib 156c to enhance the structural strength of the guide rib 156b and improve its service life.

[0121] In some embodiments, a second threaded hole 123 is formed on a guide boss 124.

[0122] Due to the presence of the guide boss 124, the thickness of the guide boss 124 on the back plate 12 is greater than that of other parts of the back plate 12. By forming the second threaded hole 123 on the guide boss 124, the depth of the second threaded hole 123 can be increased. This allows for an increase in the depth of the second threaded hole 123 without increasing the thickness of the back plate 12, thereby increasing the threaded area of ​​the second threaded hole 123 and the second threaded locking member. This, in turn, helps to improve the connection stability between the flame-retardant plate 15 and the back plate 12.

[0123] In some embodiments, one of the flame-retardant plate 15 and the back plate 12 is provided with a second positioning part 157, and the other of the flame-retardant plate 15 and the back plate 12 is provided with a second mating part 125. For example, the flame-retardant plate 15 is provided with a first positioning part 153, and the back plate 12 is provided with a first mating part 134. The second mating part 125 is inserted into the second positioning part 157. The cooperation between the second positioning part 157 and the second mating part 125 provides initial positioning for the fixed connection of the flame-retardant plate 15 and the back plate 12, thereby improving the assembly efficiency of the flame-retardant plate 15 and the back plate 12.

[0124] When the second positioning part 157 is a positioning groove, the second mating part 125 is a positioning protrusion that matches the positioning groove; and when the second positioning part 157 is a positioning protrusion, the second mating part 125 is a positioning groove that matches the positioning protrusion, and the positioning protrusion is inserted into the positioning groove.

[0125] In some embodiments, there can be multiple second positioning portions 157 and multiple mating portions 125, such as two, three, four, five, six, seven, eight, etc. Multiple second positioning portions 157 are spaced apart on the flame-retardant plate 15, and multiple second mating portions 125 are spaced apart on the back plate 12. The multiple second mating portions 125 and the multiple second positioning portions 157 are connected in a one-to-one correspondence.

[0126] The arrangement of multiple second positioning parts 157 and multiple second mating parts 125 is beneficial to improving the positioning accuracy between the flame-retardant plate 15 and the back plate 12.

[0127] In some embodiments, as shown in Figures 13 and 14, the flame-retardant plate 15 has a cable management groove 158 on the surface facing away from the back plate 12 to facilitate cable management inside the display device and avoid cable clutter.

[0128] Figure 16 is a partial structural schematic diagram of a display device according to some embodiments, wherein the rear housing is not shown. Figure 17 is a schematic diagram of the connection of a flame-retardant plate on the rear housing according to some embodiments.

[0129] Referring to Figures 16 and 17, this disclosure provides a display device, continuing to use a television set as an example of a display device, which can be used as an independent display source or combined with other functional components to enable the display device to have corresponding functions.

[0130] In some embodiments, the display device may include a back plate 12, which is the main support member of the display device. A mounting cavity is formed on the front side of the back plate 12 for mounting structures such as light sources and optical film assemblies.

[0131] The back panel 12 is arranged vertically. A forward-protruding frame is formed on the peripheral edge of the back panel 12; the frame is circumferentially arranged and extends around the edge of the back panel 12. The frame extends forward beyond the front side of the back panel 12, and the frame and the back panel 12 together form a front-opening mounting cavity for mounting a backlight and an optical film assembly. The display panel is fixed to the front end of the frame.

[0132] The specific structure of the backplate 12 is described in the relevant technology and will not be repeated here.

[0133] In some embodiments, the display device may further include a display panel fixed to the front side of the back plate 12. The display panel is used to display image information for user viewing. A mounting cavity is formed between the front side of the back plate 12 and the rear side of the display panel by a gap, within which an optical film assembly and a light source are disposed. Light emitted by the light source passes through the optical film assembly and displays image information on the display panel.

[0134] The backlight is used to emit light. The backlight and the optical film group are arranged in parallel. The backlight is located on the light-incident side behind the optical film group so as to emit light toward the optical film group. The optical film group is located in front of the backlight so that after the light passes through the optical film group, uniform white light is obtained on the light-emitting side in front of the optical film group.

[0135] An optical film assembly is positioned in front of and spaced from the backlight source to improve the uniformity and brightness of the light source. The optical film assembly includes a diffuser plate and multiple films arranged sequentially. The multiple films may include brightness enhancement plates and multiple prism sheets, or multiple films may include multiple prism sheets.

[0136] In some embodiments, the display device may further include a rear housing 13, which is fixed to the back of the back panel 12. An accommodating space is formed between the front side of the rear housing 13 and the rear side of the back panel 12. Electronic components are disposed on the rear side of the back panel 12 within the accommodating space. The electronic components include a main control board, a power board, a speaker, and a power strip. The electronic components are fixed to the back of the back panel 12 and located within the coverage area of ​​the rear housing 13, thereby protecting the electronic components using the rear housing 13. The main control board is mainly used for performing calculations on the control system and outputting corresponding operation commands. The main control board is located between the back of the back panel 12 and the rear housing 13, and is fixed to the back of the back panel 12.

[0137] In some embodiments, the main control board is primarily used to perform calculations on the control system of the display device and output relevant operation commands. The main control board has a large number of electronic components, mainly used to transmit the operation commands output by the main control board to the corresponding operation terminals.

[0138] The power supply board is set separately or integrated on the main control board and fixed on the back of the back panel 12. It is mainly used to provide drive voltage or stable operating voltage to the main control board and to keep the output current stable when the circuit on the main control board is working.

[0139] The speaker is located on the back of the back panel 12 and is mainly used to produce corresponding sounds in conjunction with the interface displayed on the display panel. The power strip has multiple different types of interfaces for connecting external devices to receive or output signals to them. In some embodiments, the power strip is integrated into the main control board. Other driving components may be structures such as remote control modules or voice modules.

[0140] During operation, the power supply level (PS) of the power board can reach level three, forming a PS3 circuit. The power board constitutes a high-heat component. As a high-power source circuit, the power board generates a large amount of heat during operation. To ensure safety and prevent fire, appropriate fire-resistant materials are installed at the locations of the high-heat components on the back plate 12 and the rear shell 13.

[0141] In one embodiment, the back panel 12 is a structure made of metal material. The metal material structure is not only fireproof, but also ensures the structural strength of the metal material, so that the back panel 12 can be made thinner, thereby enabling the display device to be made thinner.

[0142] In some embodiments, the back panel 12 is a structure made of other materials, and corresponding fireproofing measures are provided on the back panel 12.

[0143] In some embodiments, any one or more of the main control board, power board, electronic components, etc., are high-heat components, and the high-heat components are disposed in the same area on the back plate 12.

[0144] Figure 18 is a schematic diagram of the back side of the back panel according to some embodiments.

[0145] Referring to Figures 16 to 18, the back of the back plate 12 is provided with a first region 110 and a second region 120 disposed outside the first region 110; the high-heat component is disposed on the back of the back plate 12 and located in the first region 110.

[0146] The first region 110 can be set in any region on the back of the back panel 12, such as any one or more positions on the top, bottom, left, right and center of the back of the back panel 12.

[0147] In some embodiments, a first region 110 is provided, and the high-heating elements are concentrated in a single first region 110.

[0148] In some embodiments, the first region 110 is configured as a plurality of regions, which are distributed in a dispersed manner, and the high-heat components are distributed in the first region 110 at different locations.

[0149] Figure 19 is a structural schematic diagram of the rear cover from one perspective according to some embodiments. Figure 20 is a structural schematic diagram of the rear cover from another perspective according to some embodiments. Figure 21 is an enlarged view of point A in Figure 20.

[0150] Referring to Figures 17 to 21, the rear cover 13 is fitted onto the back of the back panel 12, and the rear cover 13 covers at least the first region 110. For example, the rear cover 13 covers both the first region 110 and the second region 120, where high-heat components such as the aforementioned circuit board 14 may be located. Electronic components other than high-heat components may be located in the second region 120.

[0151] The display device also includes a flame-retardant plate 15, which is made of a material with a flame-retardant rating higher than V1, effectively preventing the flame-retardant plate 15 from catching fire. The flame-retardant plate 15 is disposed on the front side of the rear shell 13 and covers the first area 110 to block the heat of the high-heat components in the first area 110 from being transferred toward the rear shell 13.

[0152] In some embodiments, a first limiting structure is provided on the rear shell 13, the first limiting structure being used to engage the flame-retardant plate 15 so that the flame-retardant plate 15 can be detachably connected to the front side of the rear shell 13.

[0153] Figure 22 is an enlarged view of point B in Figure 17. Figure 23 is a structural schematic diagram of the flame-retardant plate of this disclosure. Figure 24 is an enlarged view of point C in Figure 23.

[0154] Referring to Figures 18 to 24, a second limiting structure is provided on the rear shell 13; the second limiting structure is detachably connected to the first limiting structure, so that the flame retardant plate 15 can be detachably connected to the rear shell 13, thereby facilitating the installation of the flame retardant plate 15 on the front side of the rear shell 13.

[0155] In some embodiments, the first limiting structure is a buckle 310 protruding from the front side of the rear shell 13; the second limiting structure is a hole 410 opened on the flame retardant plate 15; the buckle 310 can be detachably engaged in the hole 410, and the detachability of the buckle 310 in the hole 410 drives the detachable installation of the flame retardant plate 15 on the rear shell 13.

[0156] In some embodiments, the first limiting structure is a card hole 410, and the second limiting structure is a buckle 310.

[0157] In one embodiment, the first limiting structure and the second limiting structure are connection structures such as bolts or screws.

[0158] In some embodiments, the first limiting structure is a buckle 310 protruding from the front side of the rear shell 13, and the second limiting structure is a locking hole 410 formed on the flame-retardant plate 15, the locking hole 410 penetrating the flame-retardant plate 15 in the front-rear direction. The buckle 310 may include a stop section 311 and a latch section 312. The stop section 311 protrudes forward from the rear shell 13, the rear end of the stop section 311 is connected to the rear shell 13, and the front end of the stop section 311 is connected to the latch section 312.

[0159] When the flame-retardant plate 15 is connected to the rear shell 13, the stop section 311 passes through the locking hole 410. The stop section 311 passes through the locking hole 410, and the locking tongue section 312 is connected to the front end of the stop section 311. The rear side of the locking tongue section 312 is attached to the front side of the flame-retardant plate 15, and drives the rear side of the flame-retardant plate 15 to be attached to the front side of the rear shell 13.

[0160] When the rear side of the flame-retardant plate 15 is attached to the front side of the rear shell 13, there is no gap between the front side of the rear shell 13 and the flame-retardant plate 15, ensuring that the flame-retardant plate 15 is tightly connected to the rear shell 13. At the same time, it ensures that the structure formed by the attachment of the rear shell 13 and the flame-retardant plate 15 has a smaller thickness in the front-back direction, so as to ensure a smaller thickness on the display device and make the display device thinner in the front-back direction.

[0161] A stop section 311 is inserted into the locking hole 410, and the stop section 311 abuts against the upper side wall of the locking hole 410 to support the flame-retardant plate 15 and restrict the downward fall of the flame-retardant plate 15. Furthermore, a protruding limiting rib 313 is formed on the upper surface of the stop section 311; the limiting rib 313 stops against the upper side wall of the locking hole 410 to support the flame-retardant plate 15 upward.

[0162] In some embodiments, the latch segment 312 bends from the front end of the stop segment 311 and extends upward, the rear side of the latch segment 312 abuts against the front side of the flame retardant plate 15, the rear side of the flame retardant plate 15 is attached to the front side of the rear shell 13, and the latch segment 312 presses the rear shell 13 against the front side of the rear shell 13 so that the rear shell 13 and the flame retardant plate 15 have a smaller thickness in the front-rear direction after they are attached.

[0163] In some embodiments, a protruding guide rib 420 is formed on the front side of the flame-retardant plate 15, and the rear side of the latch segment 312 is attached to the guide rib 420. The guide rib 420 protrudes from the front side of the flame-retardant plate 15. When the latch segment 312 is attached to the guide rib 420, the guide rib 420 can undergo a certain elastic deformation, thereby ensuring the clamping of the latch on the flame-retardant plate 15 and ensuring the reliability of the position of the flame-retardant plate 15.

[0164] In some embodiments, the guide rib 420 extends in the vertical direction; the lower end of the guide rib 420 is inclined upward and forward to form a guide surface 421. Through the guiding effect of the guide surface 421, the latch segment 312 can move along the guide surface 421 on the guide rib 420, thereby facilitating the fit of the rear side of the latch segment against the front side of the guide rib 420 and maintaining the clamping between the latch segment 312 of the flame retardant plate 15 and the front side of the rear shell 13.

[0165] In some embodiments, a gap exists between the latch segment 312 and the front side of the rear shell 13; a reinforcing rib 314 is provided between the rear shell 13 and the latch segment 312. The front and rear ends of the reinforcing rib 314 are respectively formed on the opposing surfaces of the rear shell 13 and the latch segment 312. The provision of the reinforcing rib 314 enhances the structural strength of the latch segment 312, thereby effectively preventing the breakage of the latch segment 312 and the stop segment 311.

[0166] An clearance hole 430 is provided on the flame-retardant plate 15 above the latch hole 410; the lower end of the clearance hole 430 communicates with the latch hole 410; a reinforcing rib 314 is located inside the clearance hole 430, and a reinforcing rib 314 is provided between the rear shell 13 and the latch tongue section 312 to enhance the structural strength of the latch 310. The clearance hole 430 is provided on the flame-retardant plate 15, and the reinforcing rib 314 is located inside the clearance hole 430, so that the setting of the reinforcing rib 314 will not affect the engagement of the latch 310 on the flame-retardant plate 15.

[0167] In some embodiments, the reinforcing rib 314 extends in the vertical direction, with the upper end of the reinforcing rib 314 extending to the upper end of the latch segment 312 and the lower end of the reinforcing rib 314 extending to the stop segment 311, so that the buckle 310 has a greater structural front.

[0168] In some embodiments, the locking hole 410 extends through the flame-retardant plate 15 in the front-rear direction; the buckle 310 passes through the locking hole 410 and overlaps the front side of the flame-retardant plate 15; the forward projections of the locking hole 410 and the buckle 310 on the back plate 12 are both located outside the first region 110. The forward projections of the locking hole 410 and the buckle 310 on the back plate 12 are both located outside the first region 110, so that the locking hole 410 and the buckle 310 can be misaligned with the high-heat components within the first region 110. The buckle 310 passes through the locking hole 410 and overlaps the front side of the flame-retardant plate 15, limiting the forward movement of the flame-retardant plate 15 and confining the flame-retardant plate 15 between the front side of the flame-retardant plate 15 and the buckle 310. The projections of the 410 slot and the 310 buckle forward on the back plate 12 are both located outside the first area 110, which can effectively prevent heat transfer from the hot parts to the buckle 310, effectively reduce the risk of the buckle 310 catching fire, and thus prevent the flame from being transferred from the buckle 310 to the back cover 13.

[0169] Multiple second limiting structures are provided, and these multiple second limiting structures are positioned close to the edge of the flame-retardant plate 15; the first limiting structure and the second limiting structure correspond one-to-one. The multiple second limiting structures are positioned close to the edge of the flame-retardant plate 15, and the first limiting structure on the rear shell 13 corresponds to the second limiting structure. The first limiting structure on the rear shell 13 is positioned close to the edge of the flame-retardant plate 15 to reduce the probability of heat transfer from the high-heat components to the first limiting structure, effectively preventing the first limiting structure from igniting.

[0170] In some embodiments, the rear housing 13 is further provided with a fixing hole 320; the flame-retardant plate 15 has a through hole 440 extending from front to back, through which fasteners can pass and through the through hole 440 and the fixing hole 320, and are threaded into the fixing hole 320. The fasteners, through the through hole 440 and the fixing hole 320, and threaded into the fixing hole 320, fix the flame-retardant plate 15 to the front side of the rear housing 13. The fasteners are bolts or screws, and are made of metal to prevent ignition.

[0171] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0172] Furthermore, the embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent disclosure. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the content of this specification should not be construed as a limitation of this disclosure, and the protection scope of this disclosure should be determined by the appended claims.

Claims

1. A display device, the display device comprising: Display module; A back panel that covers the back of the display module; The rear shell is disposed on the side of the back panel opposite to the display module; A circuit board is disposed on the side of the back plate opposite to the display module and located between the back plate and the rear cover; A flame-retardant plate is disposed between the back plate and the rear shell, the flame-retardant plate covers the circuit board, and the projected area of ​​the flame-retardant plate on the back plate is smaller than the projected area of ​​the rear shell on the back plate; wherein, the material of the rear shell is a flame-retardant material, and the flame-retardant rating of the material of the rear shell is lower than the flame-retardant rating of the material of the flame-retardant plate.

2. The display device according to claim 1, wherein the flame-retardant plate is mounted on the rear shell.

3. The display device according to claim 2, wherein the flame-retardant plate comprises: A cover plate is disposed on the side of the circuit board opposite to the back plate, and the cover plate is connected to the rear shell; as well as A base plate, which is bent and extended from the bottom edge of the cover plate toward the back plate; The cover plate and / or the bottom plate are connected to the rear shell.

4. The display device according to claim 3, wherein the back plate is provided with a first connecting portion, the rear shell is provided with a second connecting portion, the second connecting portion and the first connecting portion are connected in cooperation, and the second connecting portion and the first connecting portion are located on the side of the bottom plate away from the circuit board.

5. The display device according to claim 3 or 4, wherein the base plate is provided with a first latching portion, the rear shell is provided with a second latching portion, the first latching portion and the second latching portion are engaged and the first latching portion and the second latching portion are located on the side of the base plate away from the circuit board.

6. The display device according to claim 3 or 4, wherein the cover plate is provided with a first through hole, the rear shell is provided with a first threaded hole, and the display device further includes a first threaded locking member, the first threaded locking member passing through the first through hole and being threadedly connected to the first threaded hole.

7. The display device according to claim 3 or 4, wherein one of the back plate and the rear shell is provided with a first positioning part, and the other of the back plate and the rear shell is provided with a first mating part, the first mating part is mated and connected with the first positioning part, and the first mating part and the first positioning part are located on the side of the bottom plate away from the circuit board.

8. The display device according to claim 3 or 4, the display device further comprising a flame-retardant elastic layer disposed between the base plate and the back plate, and pressed together by the base plate and the back plate.

9. The display device according to claim 1, wherein the flame retardant material of the flame retardant plate has a flame retardant rating of V1 or V0, and the flame retardant material of the back shell has a flame retardant rating of HB or V2.

10. The display device according to claim 1, wherein the flame-retardant plate is mounted on the back plate.

11. The display device according to claim 10, wherein a guide boss is provided on the surface of the back plate facing the flame retardant plate, and in the direction from the back plate to the flame retardant plate, the outer peripheral side of the guide boss gradually slopes from the back plate toward the center of the guide boss to form a first guide slope. The flame-retardant plate includes: A cover plate is disposed on the side of the circuit board opposite to the back plate, and the cover plate is connected to the rear shell; A base plate, the base plate being bent and extended from the bottom edge of the cover plate toward the back plate; and, A connecting plate is provided, which extends from the side of the base plate away from the cover plate in a direction away from the cover plate, and the connecting plate is provided with a second guide slope that fits against the first guide slope.

12. The display device according to claim 11, wherein the connecting plate comprises a first plate, a second plate, and a third plate, the first plate extending from the side of the base plate away from the cover plate in a direction away from the cover plate, the second plate extending from the side of the first plate away from the base plate in a direction away from the base plate, the third plate extending from the side of the second plate away from the first plate in a direction away from the first plate, and a recess is formed on the surface of the third plate facing the back plate in a direction away from the back plate, and the second guide slope is formed on the groove wall of the recess; or, The connecting plate has a guide rib protruding from its surface facing the back plate, and the second guide slope is formed on the guide rib.

13. The display device according to claim 12, wherein the guide rib protrudes from the surface of the connecting plate facing the back plate; The connecting plate also has reinforcing ribs protruding from its surface facing the back plate, and these reinforcing ribs are angled relative to the guide ribs; and / or The base plate has a reinforcing rib protruding from its surface facing the circuit board, and the reinforcing rib extends to connect with the guide rib.

14. The display device according to any one of claims 11-13, wherein the connecting plate is provided with a second through hole, the guide boss is provided with a second threaded hole, and the display device further includes a second threaded locking member, the second threaded locking member passing through the second through hole and being threadedly connected to the second threaded hole.

15. The display device according to claim 1, wherein the flame-retardant plate comprises: A cover plate is disposed on the side of the circuit board opposite to the back plate, and the cover plate is connected to the rear shell; as well as A base plate, which extends and bends from the bottom edge of the cover plate toward the back plate; The top, left, and right edges of the cover plate are spaced apart from the back plate to form openings, and the bottom plate is provided with heat dissipation holes that extend through its thickness direction.

Images