CN214541368U

CN214541368U - Display device

Info

Publication number: CN214541368U
Application number: CN202120572889.6U
Authority: CN
Inventors: 盛尊友; 周鹏鹏
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-10-29
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to a display device, which comprises a back plate, a lower back shell and a base, wherein the lower back shell is arranged at the lower end of the back plate; the bottom surface of the lower rear shell is concavely provided with a fixed cavity; the base is arranged below the lower rear shell, and a fixing part matched with the fixing cavity is formed at the top of the base; the fixing parts are oppositely inserted and fixed in the fixing cavity. The utility model discloses on being fixed in the lower backshell of backplate lower extreme with the base connection, the fixed chamber of backshell bottom surface and the fixed part counterpoint grafting cooperation at base top down are utilized, realize that the connection between base and the backshell down is fixed, and then simplify the inside structure of display device, need not to set up the base linking bridge in display device inside, be favorable to simplifying display device's inner structure, and alleviate display device's complete machine weight, and the backshell can adopt modes such as mould plastics to make fast down, and then can reduce display device's cost of manufacture and cost of transportation, and then realize the reduction of complete machine cost.

Description

Display device

Technical Field

The utility model relates to a show technical field, in particular to display device.

Background

Along with the popularization and promotion of display device products, the cost requirement on the display device is higher and higher.

The display device for TV set, computer display, etc. includes mainly display panel, back board, back casing and base. The display panel is used for displaying different interfaces for users to watch. The back plate is arranged on the back side of the display panel and used for fixing the display panel. The back shell cover is arranged on the back side of the back plate and is used as a partial or whole back appearance surface. The base is arranged at the bottom of the display device and used for supporting the display device.

In the related art, a base connecting bracket is usually required to be disposed inside the display device, such as on the back panel, for the base to be connected and fixed. However, the internal connecting bracket usually results in a complicated structure inside the back plate or the display device, resulting in a high cost of the whole device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a display device to optimize display device's structure among the prior art, reduce the complete machine cost.

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

according to an aspect of the present invention, the utility model provides a display device, this display device includes: a back plate; the lower rear shell is arranged at the lower end of the back plate; a fixing cavity is concavely arranged on the bottom surface of the lower rear shell; the base is arranged below the lower rear shell, and a fixing part matched with the fixing cavity is formed at the top of the base; the fixing part is inserted and fixed in the fixing cavity in an alignment mode.

According to some embodiments of the present application, the fixing cavity is provided with a positioning hole; the top surface of the fixing part is convexly provided with a positioning column matched with the positioning hole; the positioning column is inserted in the positioning hole.

According to some embodiments of the present application, the transverse cross-section of the positioning hole is elongated; the number of the positioning holes is two, and the two positioning holes are perpendicular to each other.

According to some embodiments of the present application, the fixing cavity is provided with fixing screw holes, and the fixing screw holes and the positioning holes are arranged at intervals; the top surface of the fixing part is provided with a first fixing hole which penetrates through the base from top to bottom, and the first fixing hole is opposite to the fixing screw hole.

According to some embodiments of the application, the lower rear shell is provided with a plurality of reinforcing ribs above the fixed cavity, and the reinforcing ribs are arranged in a staggered manner.

According to some embodiments of the present application, a second fixing hole is formed in the lower rear case and at the position of the reinforcing rib, and the lower rear case is fixedly connected to the back plate through the second fixing hole.

According to some embodiments of the present application, the display device further comprises an upper rear case; the back surface of the back plate is provided with a first mounting area and a second mounting area which are communicated; the first mounting area is arranged at the lower end of the back plate, and the second mounting area is arranged above the first mounting area; the lower rear shell is arranged in the first installation area; the upper rear shell is mounted in the second mounting area, and the lower end of the upper rear shell covers the back side of the lower rear shell.

According to some embodiments of the present application, the display device further comprises a main control panel; the main control board is arranged in the second mounting area and covered in the upper rear shell; the lower end of the main control board is provided with the extension part extending into the first installation area, and the bottom end of the extension part is integrated with a touch switch; and the bottom of the lower rear shell is provided with a key opposite to the touch switch below the main control board, and the key is in press fit with the touch switch.

According to some embodiments of the present application, a bottom end of the extension is integrated with a signal receiving part; the bottom of the lower rear shell is provided with a light guide part, and the light guide part is opposite to the signal receiving part.

According to some embodiments of the application, the lower rear shell has one or more first wire arranging clips integrally formed on a front side surface thereof facing the back plate and one or more second wire arranging clips integrally formed on a rear surface thereof facing the upper rear shell within a coverage of the upper rear shell.

According to the above technical scheme, the embodiment of the utility model provides an at least have following advantage and positive effect:

the utility model discloses among the display device, on the lower backshell of backplate lower extreme is fixed in with the base connection, utilize concave fixed chamber of locating the backshell bottom surface and the fixed part counterpoint grafting cooperation that forms at the base top, realize that the connection between base and the backshell is fixed down, and then simplify the inside structure of display device, need not to set up the base linking bridge inside display device, be favorable to simplifying display device's inner structure, and alleviate display device's complete machine weight, and the backshell can adopt modes such as mould plastics to make fast down, and then can reduce display device's cost of manufacture and cost of transportation, and then realize the reduction of complete machine cost.

Drawings

Fig. 1 is a front view of a display device according to an embodiment of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 from another perspective.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is another exploded view of fig. 2.

Fig. 5 is an enlarged schematic view of the region a in fig. 4.

Fig. 6 is an enlarged schematic view of a region B in fig. 4.

Fig. 7 is a schematic structural view of the base in fig. 4.

Fig. 8 is a structural schematic view of the lower rear case of fig. 4.

Fig. 9 is an enlarged schematic view of region C in fig. 2.

Fig. 10 is an enlarged schematic view of a region D in fig. 8.

Fig. 11 is an exploded view of the back plate, the upper rear case and the lower rear case of fig. 2.

Fig. 12 is an enlarged schematic view of region E in fig. 11.

Fig. 13 is a rear view of fig. 1.

Fig. 14 is a sectional view F-F in fig. 13.

Fig. 15 is an enlarged schematic view of the region G in fig. 14.

Fig. 16 is a sectional view taken along line H-H in fig. 13.

Fig. 17 is an enlarged schematic view of the region J in fig. 16.

Fig. 18 is an enlarged structural view of the region K in fig. 16.

The reference numerals are explained below:

1. a display panel; 2. a base; 21. a fixed part; 22. footing; 23. mounting blocks; 24. a first fixing hole; 3. a back plate; 31. a first mounting area; 32. a second mounting area; 311. a first positioning hole; 321. a first card hole; 4. a lower rear shell; 41. a positioning column; 42. a fixed cavity; 43. reinforcing ribs; 44. a second fixing hole; 45. a first wire arranging clamp; 46. a second wire arranging clamp; 47. pressing a key; 48. a light guide; 400. an overlap region; 401. a second card hole; 421. a second positioning hole; 422. fixing screw holes; 423. connecting ribs; 5. an upper rear shell; 51. a through hole; 52. buckling; 6. a speaker; 7. a main control board; 71. an extension portion; 72. a touch switch; 74. and a connection terminal.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

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

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

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

For convenience of description, unless otherwise specified, reference is made herein to the upper, lower, left, right, front, and rear orientations of the display device as they are used. The screen (i.e., the display surface of the display panel) of the display device is front, and the opposite direction is back. The display device is not limited to television, computer monitor, digital photo frame and other electronic products. The following specifically describes the structure of a television set as an example.

Fig. 1 is a front view of a display device according to an embodiment of the present invention. Fig. 2 is a schematic view of the structure of fig. 1 from another perspective. Fig. 3 is an exploded view of fig. 2. Fig. 4 is another exploded view of fig. 2.

Referring to fig. 1, a display device according to an embodiment of the present invention includes a display panel 1, a backlight module, a rear housing assembly, and a base 2.

Referring to fig. 1, the display panel 1 is located at the front side of the display device, and the front side of the display panel 1 is a display surface for displaying images.

Referring to fig. 2 to 4, the backlight module is disposed on the back side of the display panel 1 for providing a surface light source for the display panel 1. The backlight module mainly comprises a back plate 3, a light guide plate, a light source and the like.

The back plate 3 is used for providing an installation space for the display panel 1 and performing structural support. The light guide plate and the light source are disposed between the rear plate 3 and the display panel 1.

Referring to fig. 4, a first mounting area 31 and a second mounting area 32 are formed on the back surface of the back plate 3. The first mounting area 31 is located at the lower end of the back surface of the backboard 3 and is arranged along the lower end edge of the backboard 3. The second mounting area 32 is located above the first mounting area 31. The second mounting region 32 communicates with the first mounting region 31, and the second mounting region 32 has a smaller width than the first mounting region 31. The rear surface of the rear plate 3 is directly used as a rear surface of a portion of the display device in a region other than the first mounting region 31 and the second mounting region 32.

Still referring to fig. 2 to 4, the rear case assembly includes a lower rear case 4 and an upper rear case 5 mounted on the rear surface of the rear plate 3. The lower rear case 4 is mounted to the lower end of the rear surface of the rear panel 3, i.e., to the first mounting area 31 provided on the rear surface of the rear panel 3. The upper rear case 5 is provided above the lower rear case 4 and covers the second mounting area 32. The back sides of the lower rear case 4 and the upper rear case 5 serve as a back appearance surface of another part of the display device. Further, the bottom surface of the lower rear case 4 may serve as a bottom exterior surface of the display device.

Referring to fig. 4, a first mounting space is formed between the lower rear case 4 and the first mounting region 31 of the back plate 3. The first installation space is distributed at the bottom of the display device, and components such as a loudspeaker 6 and the like can be arranged in the first installation space. The speakers 6 may be provided in plurality and arranged at intervals along the bottom edge of the display panel 1.

Fig. 5 is an enlarged schematic view of the region a in fig. 4. Fig. 6 is an enlarged schematic view of a region B in fig. 4. Fig. 7 is a schematic structural view of the base 2 in fig. 4. Fig. 8 is a schematic structural view of the lower rear case 4 in fig. 4. Fig. 9 is an enlarged schematic view of region C in fig. 8.

Referring to fig. 9 in conjunction with fig. 5, the lower rear case 4 is fixed to the back plate 3 by screws. In some embodiments, the lower back case 4 has a plurality of positioning posts 41 protruding toward the back plate 3, and the back surface of the back plate 3 has a first positioning hole 311 opposite to the positioning posts 41. Before the lower rear shell 4 is fixed, the lower rear shell 4 can be pre-positioned on the back plate 3 through the matching of the positioning column 41 and the first positioning hole 311, and then the lower rear shell is firmly fixed through the matching of screws and screw holes formed in the back plate 3, so that the installation precision is ensured.

Referring to fig. 5, and combining with fig. 4, a fixing cavity 42 is recessed in the bottom surface of the lower rear case 4, and the fixing cavity 42 is used for aligning, installing and fixing the base 2. The number of the fixed cavities 42 is two, the fixed cavities are symmetrically arranged left and right, and each fixed cavity 42 can be used for installing and fixing one base 2.

Referring to fig. 7 in conjunction with fig. 5, the base 2 is disposed below the lower rear case 4. The top of the base 2 has a fixing portion 21 protruding upward, and the shape of the fixing portion 21 matches with the fixing cavity 42 of the lower rear case 4. When the base 2 is installed, the fixing portion 21 is inserted and fixed in the fixing cavity 42, so that the base 2 is fixed on the lower rear case 4, and the whole display device is supported. The bottom of base 2 is equipped with two footing 22 that are the splayed and arrange, and footing 22 is used for supporting ground. It should be noted that the number and shape of the feet 22 are not limiting.

It should be noted that, from the whole view of the display device, the fixing cavity 42 on the bottom surface of the lower rear shell 4 is matched with the fixing part 21 on the base 2 to directly connect and fix the base 2 on the lower rear shell 4, so that a base connecting bracket arranged in the display device can be omitted, the internal structure of the display device is simplified, the whole weight of the display device is reduced, the lower rear shell 4 can be rapidly manufactured by adopting modes such as mold injection molding, the manufacturing cost and the transportation cost of the display device can be reduced, and the cost of the whole device is reduced.

Referring to fig. 5, in some embodiments, a second positioning hole 421 is formed in the fixing cavity 42, and the second positioning hole 421 is used for positioning the base boss. The second positioning holes 421 are two, and as shown in the figure, on the transverse section of the lower rear shell 4, the second positioning holes 421 are long, and the two second positioning holes 421 are arranged perpendicularly to each other, one of the second positioning holes 421 extends along the transverse direction, and the other second positioning hole 421 extends along the longitudinal direction. It should be noted that the two second positioning holes 421 can communicate with each other to form one positioning hole.

Referring to fig. 7, the top surface of the base 2 is convexly provided with two mounting blocks 23 matched with the second positioning holes 421, and the two mounting blocks 23 are respectively embedded in the two second positioning holes 421. Two installation pieces 23 are mutually perpendicular to arrange equally, and only when two installation pieces 23 simultaneously with two each second locating hole 421 when relative time, base 2 can only install in the fixed slot of backshell 4 down, utilize two installation pieces 23 and two second locating holes 421 cooperations promptly, can install the location to base 2, realize base 2's quick installation. Meanwhile, the mounting block 23 is matched with the second positioning hole 421 to increase the connection strength between the base 2 and the lower rear shell 4.

Referring to fig. 5 and 7, in some embodiments, the fixing cavity 42 has a fixing screw hole 422, and the top surface of the fixing portion 21 of the base 2 has a first fixing hole 24 penetrating the base 2 up and down, the first fixing hole 24 being opposite to the fixing screw hole 422. The fixing portion 21 is locked in the fixing chamber 42 by a screw passing through the first fixing hole 24, thereby locking the entire base 2 to the lower rear case 4.

Two fixing screw holes 422 are provided in the fixing cavity 42 and two first fixing holes 24 are provided in the base 2 to improve the stability of the locking connection between the base 2 and the lower rear case 4. It is understood that the number of the fixing screw holes 422 in the fixing cavity 42 and the first fixing holes 24 on the base 2 may be increased, and they may be correspondingly arranged.

Referring to fig. 5, the fixing screw holes 422 and the second positioning holes 421 in the fixing cavity 42 are arranged at intervals, and the fixing screw holes 422 and the second positioning holes 421, the fixing screw holes 422 and the inner wall of the fixing cavity 42, and the second positioning holes 421 and the inner wall of the fixing cavity 42 can be connected and fixed by the connecting ribs 423, so that the requirements on the strength of each structure in the fixing cavity 42 can be met, the requirements on the quality and the material of the lower back shell 4 can be reduced, and the cost of the whole machine can be further reduced.

Referring to fig. 9, in some embodiments, a rib 43 is disposed in the lower rear case 4 above the fixing cavity 42. The reinforcing ribs 43 are provided in plural and arranged in a staggered manner. The plurality of reinforcing ribs 43 are densely distributed in a staggered manner along the transverse and longitudinal directions, so that the structural strength of the joint between the lower rear shell 4 and the base 2 can be enhanced and effectively ensured.

Referring to fig. 9, a second fixing hole 44 for connecting with the back plate 3 is formed in the lower rear case 4 at the position of the reinforcing rib 43, and a screw hole is formed in a corresponding position on the back plate 3, and can be inserted into the second fixing hole 44 through a screw to lock the lower rear case 4 on the back plate 3, thereby further ensuring the structural strength and the firmness of the connection between the lower rear case 4 and the base 2 in the vertical direction.

Referring to fig. 3, 4 and 6, a second mounting space is formed between the upper rear case 5 and the second mounting region 32 of the back plate 3. The second installation space is distributed in a central area of the back of the display device. An electric control device such as a main control board 7 can be arranged in the second mounting space.

The main control board 7 can adopt an integrated board, the TCON unit can be integrated on the main control board 7, the backlight driving unit, the remote control receiving unit, the indicator light, the touch switch 72, the WIFI module and other modules, the purpose of reducing the auxiliary control board and the connecting line is realized, and then the area proportion of the second installation area 32 and the upper rear shell 5 is reduced, and then the material and the processing expense of the rear shell are saved, the deep integration of the internal structure of the display device is realized, the reduction of parts is realized, the structure is simplified, and further the reduction of the whole machine cost is realized.

Fig. 10 is an enlarged schematic view of a region D in fig. 8. Fig. 11 is an exploded view of the back plate 3, the upper rear case 5 and the lower rear case 4 in fig. 2. Fig. 12 is an enlarged schematic view of region E in fig. 11.

Referring to fig. 8 to 12, in some embodiments, the back side of the lower back case 4 is recessed to form an overlapping region 400, and the lower end of the upper back case 5 is connected to the lower back case 4 and covers the overlapping region 400 at the back side of the lower back case 4. This overlap area 400 is located between backplate 3 and upper rear shell 5, so the second installation space can be through this overlap area 400 department and first installation space intercommunication for the lower extreme of main control board 7 can extend and distribute in first installation space, and can realize with the connection of devices such as speaker 6 in the first installation space.

Referring to fig. 10 and 12, in some embodiments, a plurality of wire-handling clips are integrally formed on both front and rear sidewalls of the lower rear case 4 at the overlapping area 400 of the lower rear case 4, i.e., within a coverage area of the lower end of the upper rear case 5, and include a plurality of first wire-handling clips 45 disposed on a front side of the overlapping area 400 facing the rear plate 3 and a plurality of second wire-handling clips 46 disposed on a rear side of the overlapping area 400 facing the upper rear case 5. The first wire arranging clamps 45 and the second wire arranging clamps 46 can be arranged at intervals respectively and can be arranged on the lower rear shell 4 in an injection molding mode. A plurality of first reason fastener 45 and a plurality of second reason fastener 46 cooperation are favorable to walking the line respectively and managing the line in the inside and outside both sides of the overlap area 400 department of backshell 4 down, can avoid the pasting and the block of managing the fastener in backshell 4 down, or the setting of pasting of reason line sticky tape is favorable to ensureing that the inside reason line demand of display device and inside are clean and tidy.

Referring to fig. 3, 4 and 6, the lower end of the main control board 7 has an extending portion 71 extending into the first mounting region 31, and the extending portion 71 extends into and is distributed on the inner side of the lower rear shell 4 and can extend and be distributed on the bottom of the lower rear shell 4. The touch switch 72 is integrated at the bottom end of the extension portion 71. The lower part of the bottom rear shell 4 below the main control board 7 is provided with a key 47 opposite to the touch switch 72, and the key 47 can be in press fit with the touch switch 72 on the main control board 7, so that a touch switch 72 support is omitted from being arranged in the display device, the internal structure of the display device is simplified, and the cost of the whole device is reduced.

Referring to fig. 6, in some embodiments, the bottom end of the extension 71 further integrates a signal receiving element, such as a remote control receiving head, for receiving remote control signals. Lower backshell 4 bottom is equipped with leaded light 48 in the below of signal receiving spare, but leaded light 48 joint is fixed on base 2, can install leaded light 48 on backshell 4 under in advance, forms the subassembly to in later stage assembly. The light guide member 48 can transmit external remote control light signals to the signal receiving member, and further transmit the external remote control light signals to the main control panel 7, so that control over corresponding components is realized.

Referring to fig. 6 and 11, in some embodiments, a plurality of connection terminals 74 are protruded from one lateral end of the main control board 7. The connection terminal 74 is used to connect with an external device to receive information of the external device or to transmit information to the external device. Through holes 51 corresponding one-to-one to the connection terminals 74 of the main control board 7 are formed on a side wall of the upper rear case 5 adjacent to the terminals, i.e., a left side wall or a rear side wall of the upper rear case 5. The connection terminal 74 is inserted into the through hole 51 and passes through the upper rear case 5.

Fig. 13 is a rear view of fig. 1. Fig. 14 is a sectional view F-F in fig. 13. Fig. 15 is an enlarged schematic view of the region G in fig. 14. Fig. 16 is a sectional view taken along line H-H in fig. 13. Fig. 17 is an enlarged schematic view of the region J in fig. 16. Fig. 18 is an enlarged structural view of the region K in fig. 16.

Referring to fig. 13 to 17, a plurality of fasteners 52 extending away from the through hole 51 are convexly disposed on the front side wall of the upper rear shell 5, and the fasteners 52 are respectively disposed in the range of the overlapping region 400 of the second mounting region 32 and the lower rear shell 4. A plurality of first fastening holes 321 are formed at the second mounting region 32 of the rear panel 3, and a plurality of second fastening holes 401 are formed at the overlapping region 400 of the lower rear case 4. The buckles 52 of the upper rear shell 5 can respectively extend into the first clamping hole 321 and the second clamping hole 401 in a one-to-one correspondence manner, and move to one side far away from the through hole 51, so that the buckles 52 are respectively clamped in the first clamping hole 321 and the second clamping hole 401. The cooperation structure of buckle 52 and first calorie of hole 321, second calorie of hole 401 has realized the assembly structure that the side of going up backshell 5 was slided in, makes the lateral wall at through-hole 51 place of backshell 5 can need not to form the isolating construction with the main part of last backshell 5, can accomplish the assembly between the connecting terminal 74 of backshell 5 and main control board 7 to can simplify the structure of going up backshell 5, reduce the cost of complete machine.

Referring to fig. 18, when the upper rear case 5 is fixed to the upper rear case 5 by the fasteners 52 matching with the first fastening holes 321 and the second fastening holes 401, the upper rear case 5 can be fixed to the back plate 3 and the lower rear case 4 by the corresponding screw holes formed in the upper rear case 5, the back plate 3, and the lower rear case 4, respectively, so as to improve the structural stability of the upper rear case 5.

Based on the technical scheme, the embodiment of the utility model provides an at least, following advantage and positive effect have:

the utility model discloses among the display device, be fixed in the lower backshell 4 of 3 lower extremes of backplate with base 2 connection, utilize the concave fixed chamber 42 of locating the lower backshell 4 bottom surface and the fixed part 21 counterpoint grafting cooperation that forms at base 2 top, realize that base 2 and lower backshell 4 between be connected fixedly, and then simplify the inside structure of display device, need not to set up the base linking bridge inside the display device, be favorable to simplifying the inner structure of display device, and alleviate display device's complete machine weight, and backshell 4 can adopt modes such as mould plastics to make fast down, and then can reduce display device's cost of manufacture and cost of transportation, and then realize the reduction of complete machine cost.

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

Claims

1. A display device, comprising:

a back plate;

the lower rear shell is arranged at the lower end of the back plate; a fixing cavity is concavely arranged on the bottom surface of the lower rear shell;

the base is arranged below the lower rear shell, and a fixing part matched with the fixing cavity is formed at the top of the base; the fixing part is inserted and fixed in the fixing cavity in an alignment mode.

2. The display device as claimed in claim 1, wherein the fixing cavity is provided with a positioning hole; the top surface of the fixing part is convexly provided with a positioning column matched with the positioning hole; the positioning column is inserted in the positioning hole.

3. The display apparatus of claim 2, wherein the positioning hole has an elongated shape in transverse cross-section; the number of the positioning holes is two, and the two positioning holes are perpendicular to each other.

4. The display device as claimed in claim 2, wherein the fixing cavity has a fixing screw hole, and the fixing screw hole is spaced from the positioning hole;

the top surface of the fixing part is provided with a first fixing hole which penetrates through the base from top to bottom, and the first fixing hole is opposite to the fixing screw hole.

5. The display apparatus as claimed in claim 1, wherein a plurality of reinforcing ribs are provided in the lower rear case above the fixing cavities in a staggered arrangement.

6. The display device as claimed in claim 5, wherein the lower rear case is provided with second fixing holes at the reinforcing ribs, and the lower rear case is fixedly connected to the rear panel through the second fixing holes.

7. The display device of claim 1, wherein the display device further comprises an upper rear housing;

the back surface of the back plate is provided with a first mounting area and a second mounting area which are communicated; the first mounting area is arranged at the lower end of the back plate, and the second mounting area is arranged above the first mounting area;

the lower rear shell is arranged in the first installation area; the upper rear shell is mounted in the second mounting area, and the lower end of the upper rear shell covers the back side of the lower rear shell.

8. The display device of claim 7, further comprising a main control board; the main control board is arranged in the second mounting area and covered in the upper rear shell; the lower end of the main control board is provided with an extension part extending into the first installation area, and the bottom end of the extension part is integrated with a touch switch;

and the bottom of the lower rear shell is provided with a key opposite to the touch switch below the main control board, and the key is in press fit with the touch switch.

9. The display device according to claim 8, wherein a bottom end of the extension portion is integrated with a signal receiving part;

the bottom of the lower rear shell is provided with a light guide part, and the light guide part is opposite to the signal receiving part.

10. The display device of claim 7, wherein one or more first wire management clips facing the back plate are integrally formed on a front side of the lower rear case and one or more second wire management clips facing the upper rear case are integrally formed on a rear side of the lower rear case within a coverage of the upper rear case.