Backplane Spraying Protection System

Abstract

The present invention relates to the field of backplanes, and discloses a backplane spraying protection system, comprising: a magnetic fixture; a backplane group, the backplane group includes two metal backplanes, the two metal backplanes are respectively magnetically connected to opposite side surfaces of the magnetic fixture, and the metal backplane includes a spraying area and a heat dissipation area which are connected to each other; and a protective cover group, the protective cover group includes two magnetic protective covers, and each magnetic protective cover is respectively magnetically connected to one side surface of each metal backplane away from the magnetic fixture and covers the heat dissipation area. The backplane spraying protection system can avoid the connection area between the metal backplane and the circuit board to perform local painting treatment and improve the efficiency of the painting treatment.

Description

Technical Field

[0001] The present invention relates to the field of backplanes, and particularly to a backplane spraying protection system. Background Art

[0002] With the progress of technology, liquid crystal display devices (such as liquid crystal TVs, liquid crystal displays, etc.) are more and more widely used in production and life. As is well known, the core part of a liquid crystal display device is the backlight module, and the backlight module generally consists of components such as a front frame, a polarizer, a color filter, liquid crystal molecules, a TFT glass plate, a diffusion sheet, a rubber frame, a backlight source, a backplane, and a circuit board.

[0003] Currently, for liquid crystal display devices, the overall strength of the whole machine is basically determined by the backplane of the backlight module. Therefore, in order to improve the strength of the liquid crystal display device, a metal backplane is generally used. Since the metal backplane is prone to rust, it must be painted to improve the antioxidant performance of the metal backplane. However, if the metal backplane is painted comprehensively, it will affect the heat dissipation effect of the metal backplane on the circuit board. How to avoid the connection area between the metal backplane and the circuit board for local painting treatment and improve the efficiency of the painting treatment has become a difficult point in the backplane processing process. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a backplane spraying protection system that can avoid the connection area between the metal backplane and the circuit board for local painting treatment and improve the efficiency of the painting treatment.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A backplane spraying protection system includes:

[0007] A magnetic hanging tool;

[0008] A backplane group, the backplane group includes two metal backplanes, and the two metal backplanes are respectively magnetically connected to opposite side surfaces of the magnetic hanging tool. The metal backplane includes a spraying area and a heat dissipation area connected to each other; and

[0009] A protective cover group, the protective cover group includes two magnetic protective covers, and each magnetic protective cover is respectively magnetically connected to a side surface of each metal backplane away from the magnetic hanging tool and covers the heat dissipation area.

[0010] In one embodiment, the magnetic shielding cover includes a main cover body, a bending plate and an extension plate. The main cover body is magnetically connected to one side of each metal back plate away from the magnetic hanging device and covers the heat dissipation area. The first end of the bending plate is connected to the main cover body, and the second end of the bending plate is connected to the extension plate. The main cover body, the bending plate and the extension plate together form an integral structure.

[0011] In one embodiment, the bending plate is provided with a connecting groove, and the metal back plate is provided with a protruding block for insertion connection with the connecting groove.

[0012] In one embodiment, the magnetic shielding cover further includes a handle disposed on one side of the main cover body away from the metal back plate. The main cover body, the bending plate, the extension plate and the handle together form an integral structure.

[0013] In one embodiment, the magnetic hanging device includes a balance separation frame, a main frame group and a magnetic attraction frame group. The main frame group includes two main frames respectively connected to opposite side surfaces of the balance separation frame. The magnetic attraction frame group includes two magnetic attraction frames, and each magnetic attraction frame is respectively connected to one side of each main frame away from the balance separation frame. The balance separation frame, the main frame group and the magnetic attraction frame group together form an integral structure.

[0014] In one embodiment, the main frame is provided with a plurality of hollow slots.

[0015] In one embodiment, the main frame is provided with a suspension hole.

[0016] In one embodiment, the metal back plate includes a back plate body which is an integral curved surface structure. The back plate body includes a flat plate, a front curved plate, a rear curved plate, a left curved plate and a right curved plate. The front curved plate, the rear curved plate, the left curved plate and the right curved plate are respectively connected to the front end, the rear end, the left end and the right end of the flat plate. The heat dissipation area is arranged on the flat plate.

[0017] In one embodiment, the metal backplane further includes a composite reinforcement structure, which includes a block-shaped reinforcement structure, a strip-shaped reinforcement structure, a frame-shaped reinforcement structure, and a chain-shaped rib. The block-shaped reinforcement structure includes a plurality of block-shaped ribs, and the plurality of block-shaped ribs are spaced apart on the front curved panel and the flat panel. The strip-shaped reinforcement structure includes a plurality of strip-shaped ribs, and the plurality of strip-shaped ribs are spaced apart on the flat panel. The frame-shaped reinforcement structure includes a plurality of frame-shaped ribs, and the plurality of frame-shaped ribs are connected to each other and disposed on the heat dissipation area. The chain-shaped rib is connected to the frame-shaped rib and disposed on the rear curved panel.

[0018] In one embodiment, the plurality of block-shaped ribs include a plurality of regular triangular block-shaped ribs and a plurality of inverted triangular block-shaped ribs, and each regular triangular block-shaped rib is disposed between two adjacent inverted triangular block-shaped ribs.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] The present invention uses a magnetic shielding cover to shield the heat dissipation area. The magnetic shielding cover is magnetically connected to the metal backplane. Compared with the relatively troublesome and complex snap structures, bolt structures, etc. in the prior art, it is more convenient and simple, can achieve quick installation and disassembly, does not require special drilling and opening, and does not affect the structure of the metal backplane itself. Thus, in the painting process of the backplane, it can reasonably and quickly avoid the connection area between the metal backplane and the circuit board for local painting treatment. The present invention can magnetically fix two metal backplanes simultaneously through a magnetic hanging tool, and can paint two metal backplanes simultaneously in the painting process of the backplane, thus greatly improving the efficiency of the painting treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a combined structure diagram of a backplane spraying protection system according to an embodiment of the present invention.

[0023] Figure 2 It is an exploded structure diagram of a backplane spraying protection system according to an embodiment of the present invention.

[0024] Figure 3 It is a front structure diagram of a metal backplane of a backplane spraying protection system according to an embodiment of the present invention.

[0025] Figure 4 The reverse side structure diagram of the metal backplane of the backplane spraying protection system according to an embodiment of the present invention.

[0026] Figure 5 It is Figure 4 The enlarged view of the part of the dotted circle A in

[0027] Figure 6 It is Figure 4 The enlarged view of the part of the dotted circle B in Specific embodiments

[0028] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] A backplane spraying protection system includes: a magnetic adsorption hanger; a backplane group, the backplane group includes two metal backplanes, and the two metal backplanes are respectively magnetically connected to opposite side surfaces of the magnetic adsorption hanger. The metal backplane includes a spraying area and a heat dissipation area connected to each other; and a protective cover group, the protective cover group includes two magnetic adsorption protective covers, and each magnetic adsorption protective cover is respectively magnetically connected to one side surface of each metal backplane away from the magnetic adsorption hanger and covers the heat dissipation area.

[0032] To better illustrate the above backplane spraying protection system and better understand the concept of the above backplane spraying protection system. In one embodiment, please refer to Figure 1 And Figure 2, a backplane spraying protection system 10, comprising a magnetic suction hanger 110, a backplane group and a protective cover group. The backplane group includes two metal backplanes 120, and the two metal backplanes 120 are respectively magnetically connected to opposite side surfaces of the magnetic suction hanger 110. The metal backplane 120 includes a spraying area 1211b and a heat dissipation area 1211a which are connected to each other. The protective cover group includes two magnetic suction protective covers 130, and each magnetic suction protective cover 130 is respectively magnetically connected to a side surface of each metal backplane 120 away from the magnetic suction hanger 110 and covers the heat dissipation area 1211a. It should be noted that the metal backplane 120 is divided into two areas, one is the spraying area 1211b and the other is the heat dissipation area 1211a. The heat dissipation area 1211a is used to connect the circuit board to dissipate heat from the circuit board well. In the painting process of the backplane, it is necessary to avoid the heat dissipation area 1211a to paint the spraying area 1211b to improve the oxidation resistance of the metal backplane 120. The magnetic suction protective cover 130 and the magnetic suction hanger 110 are made of magnet material. In the present invention, the magnetic suction protective cover 130 is used to block the heat dissipation area 1211a. The magnetic suction protective cover 130 and the metal backplane 120 are magnetically connected. Compared with the relatively troublesome and complex buckle structures, bolt structures, etc. in the prior art, it is more convenient and simple, can realize quick installation and disassembly, does not require special drilling and opening, and does not affect the structure of the metal backplane 120 itself. In this way, in the painting process of the backplane, the connection area of the metal backplane 120 to the circuit board can be reasonably and quickly avoided for local painting treatment. In the present invention, the magnetic suction hanger 110 can magnetically fix two metal backplanes 120 at the same time, and the two metal backplanes 120 can be painted at the same time in the painting process of the backplane, thus greatly improving the painting efficiency. Moreover, when painting the front surfaces of the two metal backplanes 120, a magnetic suction structure composed of the metal backplane 120, the magnetic suction protective cover 130 and the magnetic suction hanger 110 can provide a good shielding and protection effect on the back surface of the other metal backplane 120.

[0033] To improve the shielding and protection effect of the magnetic suction protective cover 130 on the heat dissipation area 1211a, in one embodiment, please refer to Figure 2, the magnetic shielding cover 130 includes a main cover body 131, a bent plate 132 and an extension plate 133. The main cover body 131 is magnetically connected to one side of each metal back plate 120 away from the magnetic hanging device 110 and covers the heat dissipation area 1211a. The first end of the bent plate 132 is connected to the main cover body 131, and the second end of the bent plate 132 is connected to the extension plate 133. The main cover body 131, the bent plate 132 and the extension plate 133 together form an integral structure. It can be understood that since the splashed paint may enter through the gap at the connection edge between the magnetic shielding cover 130 and the heat dissipation area 1211a, the magnetic shielding cover 130 should not only consider shielding the front of the heat dissipation area 1211a, but also consider shielding the edge of the heat dissipation area 1211a. The bent plate 132 shields the edge of the heat dissipation area 1211a, and together with the extension plate 133 for extending and widening the protection of the heat dissipation area 1211a, an excellent shielding and protection effect on the heat dissipation area 1211a can be achieved, and the possibility of paint entering and polluting the heat dissipation area 1211a can be avoided to the greatest extent.

[0034] To further improve the shielding and protection effect of the magnetic shielding cover 130 on the heat dissipation area 1211a, in one embodiment, please refer to Figure 2 , the connection surface between the main cover body 131 and the bent plate 132 forms a right angle, and the connection surface between the bent plate 132 and the extension plate 133 forms a right angle. In this way, the magnetic shielding cover 130 can have a good shielding and protection effect on the heat dissipation area 1211a in both the horizontal and vertical directions.

[0035] To further improve the shielding and protection effect of the magnetic shielding cover 130 on the heat dissipation area 1211a, in one embodiment, please refer to Figure 2 , the main cover body 131 is a T-shaped structure, and its long side part is used to shield the edge of the heat dissipation area 1211a. In this way, the shielding and protection effect of the magnetic shielding cover 130 on the heat dissipation area 1211a can be further improved.

[0036] To further improve the shielding and protection effect of the magnetic shielding cover 130 on the heat dissipation area 1211a, in one embodiment, please refer to Figure 2 , a border structure 134 is provided on the four peripheral edges of the main cover body 131, and the border structure 134 is used to closely fit with the heat dissipation area 1211a. In this way, the shielding and protection effect of the magnetic shielding cover 130 on the heat dissipation area 1211a can be further improved.

[0037] To improve the connection firmness between the magnetic shielding cover 130 and the metal back plate 120, in one embodiment, please refer to Figure 1 and Figure 2, a connecting groove 1321 is formed in the bent plate 132, and a protruding block 1217 is provided on the metal back plate 120. The protruding block 1217 is used for inserting and connecting with the connecting groove 1321. In this way, through the insertion connection between the protruding block 1217 and the connecting groove 1321, the connection firmness between the magnetic absorption protective cover 130 and the metal back plate 120 is improved.

[0038] To make the use of the magnetic absorption protective cover 130 more convenient and fast, in one embodiment, please refer to Figure 2 , the magnetic absorption protective cover 130 further includes a handle 135. The handle 135 is arranged on the side surface of the main cover body 131 away from the metal back plate 120. The main cover body 131, the bent plate 132, the extension plate 133 and the handle 135 together form an integral structure. In this way, through the handle 135, the magnetic absorption protective cover 130 can be covered or uncovered on the metal back plate 120 more conveniently and quickly, making the use of the magnetic absorption protective cover 130 more convenient.

[0039] In one embodiment, please refer to Figure 2 , the magnetic absorption hanger 110 includes a balance partition frame 111, a main frame group and a magnetic absorption frame group. The main frame group includes two main frames 112. The two main frames 112 are respectively connected to the opposite side surfaces of the balance partition frame 111. The magnetic absorption frame group includes two magnetic absorption frames 113. Each magnetic absorption frame 113 is respectively connected to the side surface of each main frame 112 away from the balance partition frame 111. The balance partition frame 111, the main frame 112 group and the magnetic absorption frame 113 group together form an integral structure. It should be noted that compared with the flat plate structure, the frame has a lighter mass, better structural stability and certain structural flexibility, and is very suitable for use as a hanger. Through the balancing, partitioning and supporting effects of the balance partition frame 111 on the main frame 112 group and the magnetic absorption frame 113 group, the back panel spraying protection system 10 tends to be stable during suspension transportation and is not easy to shake. The magnetic absorption frame 113 is made of magnet material.

[0040] To hang the metal back plate 120, in one embodiment, please refer to Figure 1 , a suspension hole is formed in the main frame 112. There is no need to drill more holes in the metal back plate 120. By hooking the suspension hole with a hook, the metal back plate 120 can be hung up.

[0041] To improve the stability of the back panel spraying protection system 10 during suspension transportation, in one embodiment, please refer to Figure 1 , a plurality of hollow slots are formed in the main frame 112. In this way, the weight of the main frame 112 itself can be reduced, making the back panel spraying protection system 10 more stable during suspension transportation.

[0042] In one embodiment, please refer toFigure 4 , the metal backplane 120 includes a backplane main body 121. The backplane main body 121 is an integrated curved surface structure. The backplane main body 121 includes a flat plate 1211, a front curved panel 1212, a rear curved panel 1213, a left curved panel 1214, and a right curved panel 1215. The front curved panel 1212, the rear curved panel 1213, the left curved panel 1214, and the right curved panel 1215 are respectively connected to the front end, rear end, left end, and right end of the flat plate 1211. The front curved panel 1212, the flat plate 1211, the rear curved panel 1213, the left curved panel 1214, and the right curved panel 1215 together enclose a first accommodation cavity 1216. The heat dissipation area 1211a is provided on the flat plate 1211. It should be noted that the backplane main body 121 combines a curved surface and a flat surface to form a structure similar to an equilateral trapezoid body, which has good flatness. The formed first accommodation cavity 1216 is also a structure similar to an equilateral trapezoid body, and can still maintain the flatness of the backplane main body 121 after accommodating other components of the backlight module.

[0043] In an embodiment, please refer to Figure 4, the metal backplane 120 further includes a composite strengthening structure 122. The composite strengthening structure 122 includes a block-shaped strengthening structure, a strip-shaped strengthening structure, a frame-shaped strengthening structure, and chain-shaped reinforcing ribs. The block-shaped strengthening structure includes a plurality of block-shaped reinforcing ribs 1221. The plurality of block-shaped reinforcing ribs 1221 are arranged at intervals on the front curved panel 1212 and the flat panel 1211. The strip-shaped strengthening structure includes a plurality of strip-shaped reinforcing ribs 1222. The plurality of strip-shaped reinforcing ribs 1222 are arranged at intervals on the flat panel 1211. The frame-shaped strengthening structure includes a plurality of frame-shaped reinforcing ribs 1223. The plurality of frame-shaped reinforcing ribs 1223 are connected to each other and arranged on the heat dissipation area 1211a. The chain-shaped reinforcing rib 1224 is connected to the frame-shaped reinforcing rib 1223 and arranged on the rear curved panel 1213. It should be noted that in order to improve the strength and stiffness of the backplane main body 121 without increasing the thickness of the plate wall of the backplane main body 121, reinforcing ribs should be arranged at appropriate positions of the backplane main body 121 to avoid deformation of the backplane main body 121. However, ordinary reinforcing ribs are only single strip-shaped structures, and the strengthening effect on the backplane main body 121 is not good. In the present invention, four different types of reinforcing ribs, namely, the block-shaped strengthening structure, the strip-shaped strengthening structure, the frame-shaped strengthening structure, and the chain-shaped reinforcing ribs, are combined skillfully and arranged in reasonable positions, which can better improve the strength and stiffness of the backplane main body 121 and avoid deformation of the backplane main body 121. For example, the block-shaped reinforcing ribs 1221 are arranged on the front curved panel 1212 and the flat panel 1211, which can well maintain the curvature from the front curved panel 1212 to the flat panel 1211, so that the front curved panel 1212 is not easily collapsed due to stress; for example, the strip-shaped reinforcing ribs 1222 and the frame-shaped reinforcing ribs 1223 are arranged on the flat panel 1211, which can well maintain the flatness of the flat panel 1211, so that the flat panel 1211 is not easily collapsed or bulged due to stress; for example, the chain-shaped reinforcing rib 1224 is connected to the frame-shaped reinforcing rib 1223 and arranged on the rear curved panel 1213, which can well maintain the curvature from the rear curved panel 1213 to the flat panel 1211, so that the rear curved panel 1213 is not easily collapsed due to stress. In particular, the chain-shaped reinforcing rib 1224 is connected to both sides of a frame-shaped reinforcing rib 1223 to form a "π" shape structure. When the backplane main body 121 is stressed, the force will extend along the "π" shape structure to the frame-shaped reinforcing ribs 1223 on both sides. This structure has a better strengthening effect on the backplane main body 121, a better resistance effect to external forces, and is more conducive to avoiding deformation of the backplane main body 121.

[0044] To improve the strengthening effect of the composite strengthening structure 122 on the backplane main body 121, in one embodiment, please refer to Figure 4, a plurality of the block-shaped reinforcing ribs 1221 include a plurality of regular triangular block-shaped reinforcing ribs and a plurality of inverted triangular block-shaped reinforcing ribs, and each of the regular triangular block-shaped reinforcing ribs is disposed between two adjacent inverted triangular block-shaped reinforcing ribs. In this way, when the backplane main body 121 is stressed, the force will be transmitted up and down in a cycle along the regular triangular block-shaped reinforcing ribs and the inverted triangular block-shaped reinforcing ribs, which can improve the strengthening effect of the composite strengthening structure 122 on the backplane main body 121.

[0045] In an embodiment, please refer to Figure 3 , the metal backplane 120 further includes a frame-shaped convex structure, and the frame-shaped convex structure includes a plurality of interconnected frame-shaped convex portions 124 formed by stamping the plate wall of the heat dissipation area 1211a upward. A second accommodation cavity 1241 is respectively disposed at the central position of each of the frame-shaped convex portions 124, and the second accommodation cavity 1241 is used for accommodating a circuit board. Each of the frame-shaped reinforcing ribs 1223 is respectively accommodated in the inner wall of each of the frame-shaped convex portions 124. It should be noted that the second accommodation cavity 1241 is used for positioning and accommodating the circuit board, and the frame-shaped convex portion 124 plays a role in limiting the circuit board. In order to avoid deformation of the frame-shaped convex portion 124 and the second accommodation cavity 1241, frame-shaped reinforcing ribs 1223 are disposed on the inner wall of the frame-shaped convex portion 124 to improve the strength and stiffness of the frame-shaped convex portion 124, so that it is not easily deformed under stress and can better protect the circuit board accommodated therein.

[0046] In order to improve the heat dissipation effect of the metal backplane 120, in an embodiment, please refer to Figure 3 , the metal backplane 120 further includes a heat dissipation plate group, and the heat dissipation plate group includes a plurality of heat dissipation plates 123. Each of the heat dissipation plates 123 is respectively disposed on the bottom wall of each of the second accommodation cavities 1241. It should be noted that the heat dissipation plate 123 is an aluminum alloy heat dissipation plate, which can quickly conduct the heat of the circuit board to the backplane main body 121 and has a good heat dissipation effect.

[0047] For the convenience of circuit connection between the circuit board and other components, in an embodiment, please refer to Figure 3 , an outlet 1241a is formed on the bottom wall of the second accommodation cavity 1241. In this way, the circuit connection between the circuit board and other components can be facilitated through the outlet 1241a.

[0048] In order to improve the heat dissipation effect of the backlight module, in an embodiment, please refer to Figure 3, the metal backplane 120 further includes a set of column sleeves, the set of column sleeves includes a plurality of column sleeves 125, and the plurality of column sleeves 125 are arranged at intervals on the frame-shaped convex portion 124. It should be noted that in the existing technology, the radiator is directly mounted on the circuit board through fasteners. The heavy radiator has a small supporting surface, and there is not enough external force support or force transfer. Being in this state for a long time will cause the circuit board to bend and warp and become scrapped. The radiator is provided with a plurality of insertion posts. In this way, through the insertion connection between the insertion posts and the column sleeves 125, the radiator can be firmly connected to the backplane main body 121, quickly dissipate heat from the circuit board, so as to improve the heat dissipation effect of the backlight module. At the same time, the radiator is supported by the high-strength backplane main body 121, solving the problem that the circuit board will bend and warp and become scrapped when the radiator is directly mounted on the circuit board for a long time.

[0049] In an embodiment, please refer to Figure 5 , the metal backplane 120 further includes a stamping convex structure 126, and the stamping convex structure 126 includes a first stamping convex 1261 formed by stamping the plate wall of the backplane main body 121 upward. It should be noted that the first stamping convex 1261 plays a role in supplementing the support of the concave part of the circuit board, so that the connection between the circuit board and the backplane main body 121 is more stable.

[0050] In an embodiment, please refer to Figure 5 , the stamping convex structure 126 further includes a second stamping convex 1262 formed by stamping the plate wall of the backplane main body 121 upward. The second stamping convex 1262 is provided with a second stamping groove 1262a, and a second stamping hole 1262b is formed in the groove wall of the second stamping groove 1262a. It should be noted that in this way, a shorter bolt passes through the second stamping hole 1262b to lock and fix the circuit board on the backplane main body 121, so as to improve the firmness of the connection between the circuit board and the backplane main body 121. The shorter bolt head is accommodated in the second stamping groove 1262a, so that the shorter bolt head is lower than the height of the backplane main body 121, which is beneficial to the flatness of the metal backplane 120 and can avoid scratching other components of the backlight module, such as the backlight source, etc., due to the protrusion of the hard bolt head.

[0051] In order to improve the firmness of the connection between the circuit board and the backplane main body 121, in an embodiment, please refer to Figure 5, the stamping boss structure 126 further includes a third stamping boss 1263 formed by upward stamping of the plate wall of the backplane main body 121. The third stamping boss 1263 is provided with a lower stamping groove 1263a and an upper stamping groove 1263b connected to each other. A third stamping hole 1263c is formed in the groove wall of the upper stamping groove 1263b. It should be noted that in this way, a longer bolt passes through the third stamping hole 1263c to lock and fix the circuit board on the backplane main body 121, so as to improve the firmness of the connection between the circuit board and the backplane main body 121. The head of the longer bolt is accommodated in the lower stamping groove 1263a, so that the head of the longer bolt is lower than the height of the backplane main body 121, which is beneficial to the flatness of the metal backplane 120, and can prevent the hard bolt head from protruding and scratching other components of the backlight module, such as the backlight source, etc.

[0052] In order to further improve the firmness of the connection between the circuit board and the backplane main body 121, in one embodiment, please refer to Figure 5 , a first screw connection hole 1263d and a first card interface 1263e are formed in the groove wall of the lower stamping groove 1263a. The first screw connection hole 1263d and the first card interface 1263e are respectively located on both sides of the third stamping hole 1263c. The first card interface 1263e includes a first inlet and a first bayonet connected to each other. It should be noted that the circuit board is provided with a card connection protrusion. The card connection protrusion enters the relatively narrow first bayonet from the relatively wide first inlet, and the card connection protrusion is clamped with the first bayonet, so that the circuit board can be installed on the backplane main body 121. Then, a bolt passes through the third stamping hole 1263c, and another bolt passes through the first screw connection hole 1263d to lock and fix the circuit board on the backplane main body 121, so as to improve the firmness of the connection between the circuit board and the backplane main body 121. The head of one bolt is accommodated in the upper stamping groove 1263b, and the card connection protrusion and the head of the other bolt are accommodated in the lower stamping groove 1263a, so that the heads of both bolts are lower than the height of the backplane main body 121, which is beneficial to the flatness of the metal backplane 120, and can prevent the hard bolt head from protruding and scratching other components of the backlight module, such as the backlight source, etc.

[0053] In one embodiment, please refer to Figure 6, the metal backplane 120 further includes a side convex structure. The side convex structure includes a plurality of side convex portions 127 extending outward from the side wall of the backplane main body 121. Each side convex portion 127 is provided with a first vertical connection hole 1271, a second vertical connection hole 1272, and a horizontal connection hole 1273. The horizontal connection hole 1273 is disposed between the first vertical connection hole 1271 and the second vertical connection hole 1272. The central axes of the first vertical connection hole 1271 and the second vertical connection hole 1272 respectively form a 90° angle with the central axis of the horizontal connection hole 1273. It should be noted that three bolts are respectively passed through the first vertical connection hole 1271, the second vertical connection hole 1272, and the horizontal connection hole 1273, and in a combination of horizontal fixing and vertical fixing methods, the front frame is locked and fixed on the backplane main body 121 to improve the firmness of the connection between the front frame and the backplane main body 121.

[0054] To further improve the firmness of the connection between the front frame and the backplane main body 121, in one embodiment, please refer to Figure 6 , the metal backplane 120 further includes a stamping convex frame structure. The stamping convex frame structure includes a plurality of stamping convex frames 128 formed by upward stamping of the plate wall of the backplane main body 121. The stamping convex frames 128 are disposed on one side of the side convex portions 127. The stamping convex frames 128 are provided with stamping inclined grooves 1281. The groove wall of the stamping inclined groove 1281 is provided with a second screw connection hole 1282 and a second card interface 1283. The second screw connection hole 1282 is disposed on one side of the second card interface 1283. The second card interface 1283 includes a second inlet and a second card slot that are connected to each other. It should be noted that the front frame is provided with a card connection convex portion. The card connection convex portion enters the relatively narrow second card slot from the relatively wide second inlet, and the card connection convex portion is clamped with the second card slot, so that the front frame can be installed on the backplane main body 121. Then, a bolt is passed through the second screw connection hole 1282 to lock and fix the front frame on the backplane main body 121. Then, three bolts are respectively passed through the first vertical connection hole 1271, the second vertical connection hole 1272, and the horizontal connection hole 1273 to lock and fix the front frame on the backplane main body 121. In this way, the firmness of the connection between the front frame and the backplane main body 121 can be further improved.

[0055] In one embodiment, please refer to Figure 3 , the backplane main body 121 is provided with a plurality of mounting holes 1218. It should be noted that the backplane main body 121 can be firmly mounted on the display housing by using T-shaped head screws through the mounting holes 1218.

[0056] In an embodiment, the backplane main body 121 includes a brass layer, a steel layer, a PET layer, and a TPU layer. The steel layer is hot-pressed on one side surface of the brass layer, the PET layer is hot-pressed on the side surface of the steel layer away from the brass layer, and the TPU layer is hot-pressed on the side surface of the PET layer away from the steel layer. In this way, the circuit board is dissipated heat through the brass layer, the hardness and stiffness are increased through the steel layer, and the PET layer and the TPU layer are used for electrical insulation and play a role in buffering and shock absorption when stressed.

[0057] Compared with the prior art, the present invention has at least the following advantages:

[0058] In the present invention, the magnetic shielding cover 130 is used to shield the heat dissipation area 1211a. The magnetic shielding cover 130 is magnetically connected to the metal backplane 120. Compared with the relatively troublesome and complex buckle structures, bolt structures, etc. in the prior art, it is more convenient and simple, can achieve rapid installation and disassembly, does not require special drilling and opening, and does not affect the structure of the metal backplane 120 itself. In this way, in the painting process of the backplane, the connection area of the metal backplane 120 to the circuit board can be reasonably and quickly avoided for local painting treatment. The present invention can magnetically fix two metal backplanes 120 at the same time through the magnetic hanging tool 110, and can paint the two metal backplanes 120 at the same time in the painting process of the backplane, thus greatly improving the efficiency of the painting treatment. Moreover, when painting the front surfaces of the two metal backplanes 120, a magnetic structure composed of the metal backplane 120, the magnetic shielding cover 130, and the magnetic hanging tool 110 can play a good shielding and protection effect on the back surface of the other metal backplane 120.

[0059] The above-described embodiments merely represent several embodiments of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A backplane spraying protection system, characterized in that, it includes: a magnetic fixture; a backplane group, the backplane group includes two metal backplanes, and the two metal backplanes are respectively magnetically connected to opposite side surfaces of the magnetic fixture. The metal backplane includes a spraying area and a heat dissipation area that are connected to each other; and a protective cover group, the protective cover group includes two magnetic protective covers, and each magnetic protective cover is respectively magnetically connected to a side surface of each metal backplane away from the magnetic fixture and covers the heat dissipation area; the magnetic fixture includes a balance partition frame, a main frame group and a magnetic frame group. The main frame group includes two main frames, and the two main frames are respectively connected to opposite side surfaces of the balance partition frame. The magnetic frame group includes two magnetic frames, and each magnetic frame is respectively connected to a side surface of each main frame away from the balance partition frame. The balance partition frame, the main frame group and the magnetic frame group together form an integral structure; the magnetic protective cover includes a main cover body, a bent plate and an extension plate. The main cover body is magnetically connected to a side surface of each metal backplane away from the magnetic fixture and covers the heat dissipation area. The first end of the bent plate is connected to the main cover body, and the second end of the bent plate is connected to the extension plate. The main cover body, the bent plate and the extension plate together form an integral structure.

2. The backplane spraying protection system according to claim 1, characterized in that, the bent plate is provided with a connection groove, and the metal backplane is provided with a raised block, and the raised block is used for insertion connection with the connection groove.

3. The backplane spraying protection system according to claim 1, characterized in that, the magnetic protective cover further includes a handle, and the handle is arranged on a side surface of the main cover body away from the metal backplane. The main cover body, the bent plate, the extension plate and the handle together form an integral structure.

4. The backplane spraying protection system according to claim 1, characterized in that, the main frame is provided with a plurality of hollow grooves.

5. The backplane spraying protection system according to claim 1, characterized in that, the main frame is provided with a hanging hole.

6. The backplane spraying protection system according to claim 1, characterized in that, the metal backplane includes a backplane body, the backplane body is an integral curved surface structure, the backplane body includes a flat plate, a front curved plate, a rear curved plate, a left curved plate and a right curved plate, and the front curved plate, the rear curved plate, the left curved plate and the right curved plate are respectively connected to the front end, the rear end, the left end and the right end of the flat plate. The heat dissipation area is arranged on the flat plate.

7. The backplane spraying protection system according to claim 6, characterized in that, The metal backplane further includes a composite strengthening structure, which includes a block-shaped strengthening structure, a strip-shaped strengthening structure, a frame-shaped strengthening structure and a chain-shaped reinforcing rib. The block-shaped strengthening structure includes a plurality of block-shaped reinforcing ribs, and the plurality of block-shaped reinforcing ribs are arranged at intervals on the front curved panel and the flat panel. The strip-shaped strengthening structure includes a plurality of strip-shaped reinforcing ribs, and the plurality of strip-shaped reinforcing ribs are arranged at intervals on the flat panel. The frame-shaped strengthening structure includes a plurality of frame-shaped reinforcing ribs, and the plurality of frame-shaped reinforcing ribs are connected to each other and arranged on the heat dissipation area. The chain-shaped reinforcing rib is connected to the frame-shaped reinforcing rib and arranged on the rear curved panel.

8. The backplane spraying protection system according to claim 7, characterized in that, the plurality of block-shaped reinforcing ribs include a plurality of regular triangular block-shaped reinforcing ribs and a plurality of inverted triangular block-shaped reinforcing ribs, and each regular triangular block-shaped reinforcing rib is arranged between two adjacent inverted triangular block-shaped reinforcing ribs.

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