Liquid crystal display screen PCB reverse folding installation direct type aluminum profile frame device

Abstract

The utility model relates to the field of aluminum profile frame devices, in particular to a liquid crystal display screen PCB reverse-folding installation direct type aluminum profile frame device which comprises a liquid crystal display panel, an aluminum profile bottom frame, a PCB protection cover and an L-shaped connecting plate. An aluminum profile bottom frame is arranged below the liquid crystal display panel and comprises a first transverse plate, a first vertical plate is arranged at the upper end of one side of the first transverse plate, a PCB protection cover is arranged below the aluminum profile bottom frame and comprises a second transverse plate, and a second vertical plate is arranged at the upper end of the side, close to the first vertical plate, of the second transverse plate. A PCB body is arranged between the aluminum profile bottom frame and the PCB protection cover, a mounting groove for mounting the PCB body is formed in the lower end face of the first transverse plate, and the PCB body is located in the mounting groove; according to the utility model, through the combination of the aluminum profile bottom frame and the PCB protection cover, when the PCB body is installed, a worker can install the PCB body in the installation groove by using EVA foam with adhesive on both sides.

Description

Technical Field

[0001] The utility model relates to the field of aluminum profile frame devices, in particular to a direct-down aluminum profile frame device for installing a PCB board of a liquid crystal display screen in a reversely folded manner. Background Art

[0002] Liquid crystal display is a flat-panel display with broad application prospects. Its basic principle is to use the electro-optical effect of liquid crystal molecules to control the transmittance of light, thereby realizing image display. Liquid crystal display is widely used in industrial automation, robotics, medical equipment, transportation, aerospace and other fields.

[0003] Currently, when installing LCD screens on the market, the PCB board is usually installed on the side of the module structure frame on the back of the LCD panel. One method is vertical installation and the other is inward tilt installation. Vertical installation is limited by the width of the PCB board, making it impossible to make the structure light and thin. Inward tilt installation will affect the luminous area of ​​the light board inside the module structure due to the angle problem, thereby reducing the light efficiency.

[0004] Therefore, in order to solve the problem that the vertical installation mentioned above is limited by the width of the PCB board, making it impossible to make the structure light and thin, and the inward tilted installation will affect the light-emitting area of ​​the light board inside the module structure due to the angle problem, a direct-down aluminum profile frame device for the reverse installation of the LCD display PCB board can be designed, so that the PCB board can be folded back and fixed on the back of the LCD display panel during installation, thereby solving the above problems. Utility Model Content

[0005] To overcome the problem that LCD screens currently on the market usually install the PCB board on the side of the module structure frame on the back of the LCD panel, one method is vertical installation and the other is inward tilt installation. Vertical installation is limited by the width of the PCB board, making it impossible to make the structure light and thin. Inward tilt installation will affect the luminous area of ​​the light board inside the module structure due to the angle problem, thereby reducing the lighting efficiency.

[0006] The utility model discloses a technical scheme for a liquid crystal display screen PCB board reverse folding installation straight-down type aluminum profile frame device, which comprises a liquid crystal display panel, an aluminum profile bottom frame, a PCB board protection cover and an L-shaped connecting plate.

[0007] Preferably, the aluminum profile bottom frame and the PCB board protection cover are combined, so that when the PCB board body is installed, the staff can install the PCB board body in the installation groove with the double-sided adhesive EVA foam, then bend the COF flexible flat cable from the groove outside the first vertical plate of the aluminum profile bottom frame, and then align the second vertical plate inside the PCB board protection cover with the first vertical plate outside the aluminum profile bottom frame.

[0008] Preferably, the first horizontal plate away from the first vertical plate is provided with a downward step horizontal plate, the outside of the connection between the first horizontal plate and the first vertical plate is provided with a guide angle bevel, the inside of the first vertical plate is provided with an optical film material positioning hook, a middle frame groove is formed between the first vertical plate and the optical film material positioning hook, the side away from the first vertical plate of the optical film material positioning hook is provided with a diffusion plate placing platform, the side away from the first vertical plate of the diffusion plate placing platform is provided with a reflective film installation bevel, and a frame splicing screw hole is formed in the middle of the reflective film installation bevel.

[0009] Preferably, the upper end surface of the downward step horizontal plate is provided with a back aluminum plate installation platform, the lower end surface of the downward step horizontal plate is provided with an anti-skid corrugated surface, the lower end surface of the connection between the first horizontal plate and the downward step horizontal plate is provided with a first fixing hole, and the lower edge of the first vertical plate is provided with a first installation hole.

[0010] Preferably, the side away from the first vertical plate of the second horizontal plate is provided with an upward step horizontal plate, the surface of the upward step horizontal plate is provided with a second fixing hole corresponding to the first fixing hole, and the upper edge of the second vertical plate is provided with a second installation hole corresponding to the first installation hole.

[0011] As preferred, a foam adhesive groove is arranged on the side lower end face of the third vertical plate away from the third vertical plate, and a third mounting hole corresponding to the first mounting hole is arranged on the lower edge of the third vertical plate.

[0012] As preferred, a first bolt is arranged in the first mounting hole, the second mounting hole and the third mounting hole, and a second bolt is arranged in the first fixing hole and the second fixing hole.

[0013] As preferred, the aluminum profile base frame is formed by heating aluminum ingots to 661-750 DEG C by a power frequency furnace, extruding by an extruder through a pre-designed mold, and bending electrolytic iron plates to form the PCB protection cover and the L-shaped connecting plate.

[0014] The frame device has the advantages that compared with the PCB body on the market, the vertical installation is limited by the width of the PCB, so that the structure cannot be made light and thin, and the inward inclination installation affects the light-emitting area of the lamp plate in the module structure due to the angle problem, the aluminum profile base frame and the PCB protection cover are combined, so that when the PCB body is installed, the staff can install the PCB body in the installation groove by using the double-sided adhesive EVA foam, then bend the COF flexible flat cable downward from the groove on the outer side of the first vertical plate of the aluminum profile base frame, then align the inner side of the second vertical plate of the PCB protection cover with the outer side of the first vertical plate of the aluminum profile base frame and fix it, and the PCB body is reversely installed on the back of the liquid crystal display panel rear module element by the aluminum profile base frame, so that the rear module structure of the liquid crystal display panel can be made lighter and thinner, and the light-emitting area of the internal lamp plate is not affected, so that the light efficiency is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The overall structure of the frame device is shown.

[0016] Figure 2 The aluminum profile base frame structure of the frame device is shown.

[0017] Figure 3 The PCB protection cover structure of the frame device is shown.

[0018] Figure 4 The L-shaped connecting plate structure of the frame device is shown.

[0019] Explanation of reference numerals: 1. LCD panel; 101. COF flexible cable; 2. Aluminum profile bottom frame; 201. First vertical plate; 202. First horizontal plate; 203. Downward-stepped horizontal plate; 204. Beveled edge; 205. Middle frame slot; 206. Optical film positioning buckle; 207. Diffuser plate placement platform; 208. Beveled edge for reflective film installation; 209. Bottom hole for frame splicing screws; 210. Mounting slot; 211. Back aluminum plate mounting platform; 212. Anti-slip corrugated surface ; 213, first fixing hole; 214, first mounting hole; 3, PCB board protection cover; 301, second vertical plate; 302, second horizontal plate; 303, second mounting hole; 304, upward ladder horizontal plate; 305, second fixing hole; 4, L-shaped connecting plate; 401, third vertical plate; 402, third horizontal plate; 403, foam adhesive groove; 404, third mounting hole; 5, double-sided EVA foam with adhesive; 6, PCB board body; 7, first bolt; 8, second bolt. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] See also Figures 1-4 The utility model provides an embodiment: a liquid crystal display PCB board reversely installed direct-down aluminum profile frame device, comprising a liquid crystal display panel 1, an aluminum profile bottom frame 2, a PCB board protection cover 3 and an L-shaped connecting plate 4; an aluminum profile bottom frame 2 is provided below the liquid crystal display panel 1, the aluminum profile bottom frame 2 comprises a first horizontal plate 202, a first vertical plate 201 is provided at an upper end of one side of the first horizontal plate 202, a PCB board protection cover 3 is provided below the aluminum profile bottom frame 2, the PCB board protection cover 3 comprises a second horizontal plate 302, a second vertical plate 301 is provided at an upper end of a side of the second horizontal plate 302 close to the first vertical plate 201, a PCB board body 6 is provided between the aluminum profile bottom frame 2 and the PCB board protection cover 3, and a mounting hole for mounting the PCB board body 6 is provided on the lower end surface of the first horizontal plate 202. Slot 210, the PCB board body 6 is located inside the mounting slot 210, and a double-sided adhesive EVA foam 5 is provided between the PCB board body 6 and the mounting slot 210. A COF soft cable 101 is provided on the side of the LCD display panel 1 close to the first vertical plate 201, and one end of the COF soft cable 101 is connected to the LCD display panel 1, and the other end of the COF soft cable 101 successively bypasses the outer side of the first vertical plate 201 and the chamfered edge 204 to extend into the mounting slot 210 and connect with the PCB board body 6. An L-shaped connecting plate 4 is provided above the aluminum profile bottom frame 2, and an L-shaped connecting plate 4 is fitted on one edge of the upper end of the LCD display panel 1. The L-shaped connecting plate 4 includes a third horizontal plate 402, and a third vertical plate 401 is provided at the lower end of the third horizontal plate 402 close to the second vertical plate 301.

[0022] See also Figure 1-Figure 2In this embodiment, a downward stepped horizontal plate 203 is provided on the side of the first horizontal plate 202 away from the first vertical plate 201, a chamfered edge 204 is provided on the outer side of the connection between the first horizontal plate 202 and the first vertical plate 201, an optical film material positioning buckle 206 is provided on the inner side of the first vertical plate 201, a middle frame groove 205 is provided between the first vertical plate 201 and the optical film material positioning buckle 206, a diffuser plate placement platform 207 is provided on the side of the optical film material positioning buckle 206 away from the first vertical plate 201, a reflective film installation bevel 208 is provided on the side of the diffuser plate placement platform 207 away from the first vertical plate 201, a frame splicing screw bottom hole 209 is provided in the middle of the reflective film installation bevel 208, and the optical film material positioning buckle 206, the diffuser plate placement platform 207, the reflective film installation bevel 208 and the middle frame groove 205 are combined to make the aluminum When the profile bottom frame 2 is installed with the liquid crystal display panel 1, it can fit the various component module structures at the rear end of the liquid crystal display panel 1, so that the installation fit between the aluminum profile bottom frame 2 and the liquid crystal display panel 1 can be improved. The chamfered edge 204 can avoid a large bending angle when the COF soft flat cable 101 is connected to the PCB board body 6, preventing the COF soft flat cable 101 from breaking. The upper end surface of the downward step horizontal plate 203 is provided with a back aluminum plate mounting platform 211, and the lower end surface of the downward step horizontal plate 203 is provided with an anti-slip corrugated surface 212. The lower end surface of the connection between the first horizontal plate 202 and the downward step horizontal plate 203 is provided with a first fixing hole 213, and the lower edge of the first vertical plate 201 is provided with a first mounting hole 214. The anti-slip corrugated surface 212 can prevent the aluminum profile bottom frame 2 from slipping when connected to the PCB board protection cover 3.

[0023] See also Figure 2-Figure 3In this embodiment, an upwardly stepped horizontal plate 304 is provided on the side of the second horizontal plate 302 away from the first vertical plate 201, and a second fixing hole 305 corresponding to the first fixing hole 213 is opened on the surface of the upwardly stepped horizontal plate 304. A second mounting hole 303 corresponding to the first mounting hole 214 is opened on the upper edge of the second vertical plate 301. A foam sticking groove 403 is opened on the lower end surface of the side of the third horizontal plate 402 away from the third vertical plate 401, and a third mounting hole 404 corresponding to the first mounting hole 214 is opened on the lower edge of the third vertical plate 401. The first mounting hole 214, the second mounting hole 303 and the third mounting hole 404 are matched with each other and are provided with a first bolt 7. The first fixing hole 213 and the second fixing hole 305 are connected to each other. A second bolt 8 is matched and provided, and is combined with the first mounting hole 214, the second mounting hole 303 and the third mounting hole 404, so that the staff can first screw the first bolt 7 into the first mounting hole 214 from the third mounting hole 404 and the second mounting hole 303 in sequence to complete the connection between the aluminum profile bottom frame 2, the PCB board protection cover 3 and the L-shaped connecting plate 4, and then screw the second bolt 8 into the first fixing hole 213 from the second fixing hole 305 to connect the aluminum profile bottom frame 2 and the PCB board protection cover 3 together, so that the PCB board protection cover 3 forms protection for the PCB board body 6, and the foam adhesive groove 403 allows the staff to fill the foam adhesive groove 403 with double-sided foam to connect the LCD panel 1 and the L-shaped connecting plate 4.

[0024] See also Figure 3-Figure 4 In this embodiment, the aluminum profile bottom frame 2 is formed by heating the aluminum ingot to 661°C to 750°C in an industrial frequency furnace and then extruding it using an extruder with a pre-designed mold. The outer shape is an integral, all-aluminum structure. The PCB board protection cover 3 and the L-shaped connecting plate 4 are bent and formed by electrolytic iron plates. By extruding the aluminum profile bottom frame 2 as a whole and bending the PCB board protection cover 3 and the L-shaped connecting plate 4 as a whole, the overall structural strength of the aluminum profile bottom frame 2, the PCB board protection cover 3 and the L-shaped connecting plate 4 is improved.

[0025] During work, the staff can install the PCB board body 6 in the installation groove 210 using double-sided adhesive EVA foam 5, and then bend the COF soft cable 101 down from the CNC-machined groove on the outside of the first vertical plate 201 of the aluminum profile bottom frame 2 to connect it to the PCB board body 6.

[0026] Then align the inner side of the second vertical plate 301 of the PCB board protection cover 3 with the outer side of the first vertical plate 201 of the aluminum profile bottom frame 2 and fix it. Then, align the surface of the upward stepped horizontal plate 304 of the PCB board protection cover 3 with the anti-slip corrugated surface 212 of the aluminum profile bottom frame 2. Then, screw the first bolt 7 into the first mounting hole 214 from the third mounting hole 404 and the second mounting hole 303 in sequence to complete the connection between the aluminum profile bottom frame 2, the PCB board protection cover 3 and the L-shaped connecting plate 4. Then, screw the second bolt 8 into the first fixing hole 213 from the second fixing hole 305 to connect the aluminum profile bottom frame 2 and the PCB board protection cover 3 together, so that the PCB board protection cover 3 can protect the PCB board body 6.

[0027] Through the above steps, the present application combines the aluminum profile bottom frame 2 with the PCB board protection cover 3, so that when installing the PCB board body 6, the staff can install the PCB board body 6 in the installation groove 210 with double-sided adhesive EVA foam 5, and then bend the COF soft cable 101 down from the CNC-machined groove on the outside of the first vertical plate 201 of the aluminum profile bottom frame 2, and then align the inner side of the second vertical plate 301 of the PCB board protection cover 3 with the outer side of the first vertical plate 201 of the aluminum profile bottom frame 2 and fix it, and fold the PCB board body 6 back and install it on the back of the rear end module component of the liquid crystal display panel 1 through the aluminum profile bottom frame 2, so that the rear end module structure of the liquid crystal display panel 1 can be made lighter and thinner, and at the same time will not affect the light-emitting area of ​​the internal light board, resulting in reduced light efficiency.

Claims

1. A device for mounting a direct-down aluminum profile frame on a PCB board of a liquid crystal display, comprising a liquid crystal display panel (1); characterized in that: The invention also includes an aluminum profile bottom frame (2), a PCB board protection cover (3) and an L-shaped connecting plate (4); an aluminum profile bottom frame (2) is provided below the liquid crystal display panel (1); the aluminum profile bottom frame (2) includes a first horizontal plate (202); a first vertical plate (201) is provided at an upper end of one side of the first horizontal plate (202); a PCB board protection cover (3) is provided below the aluminum profile bottom frame (2); the PCB board protection cover (3) includes a second horizontal plate (302); a second vertical plate (301) is provided at an upper end of a side of the second horizontal plate (302) close to the first vertical plate (201); a PCB board body (6) is provided between the aluminum profile bottom frame (2) and the PCB board protection cover (3); a mounting groove (210) for mounting the PCB board body (6) is provided on the lower end surface of the first horizontal plate (202); the PCB board body (6) is located at the upper end of the mounting groove (210); Inside, a double-sided adhesive EVA foam (5) is provided between the PCB board body (6) and the installation groove (210); a COF soft flat cable (101) is provided on the side of the liquid crystal display panel (1) close to the first vertical plate (201); one end of the COF soft flat cable (101) is connected to the liquid crystal display panel (1); the other end of the COF soft flat cable (101) sequentially bypasses the outer side of the first vertical plate (201) and the chamfered edge (204) to extend into the installation groove (210) and connect to the PCB board body (6); an L-shaped connecting plate (4) is provided above the aluminum profile bottom frame (2); the L-shaped connecting plate (4) is fitted on the edge of one side of the upper end of the liquid crystal display panel (1); the L-shaped connecting plate (4) includes a third horizontal plate (402); and the third vertical plate (401) is provided at the lower end of the third horizontal plate (402) close to the second vertical plate (301).

2. The device for mounting a direct-mounted aluminum profile frame on a PCB with a liquid crystal display according to claim 1, characterized in that: A downward-stepped horizontal plate (203) is provided on the side of the first horizontal plate (202) away from the first vertical plate (201); a chamfered edge (204) is provided on the outer side of the connection between the first horizontal plate (202) and the first vertical plate (201); an optical film material positioning hook (206) is provided on the inner side of the first vertical plate (201); a middle frame groove (205) is provided between the first vertical plate (201) and the optical film material positioning hook (206); a diffusion plate placement platform (207) is provided on the side of the optical film material positioning hook (206) away from the first vertical plate (201); a reflective film installation bevel (208) is provided on the side of the diffuser plate placement platform (207) away from the first vertical plate (201); and a frame splicing screw bottom hole (209) is provided in the middle of the reflective film installation bevel (208).

3. The device for mounting a direct-mounted aluminum profile frame on a PCB with a liquid crystal display according to claim 2, characterized in that: The upper end surface of the downward step horizontal plate (203) is provided with a back aluminum plate mounting platform (211), the lower end surface of the downward step horizontal plate (203) is provided with an anti-slip corrugated surface (212), the lower end surface of the connection between the first horizontal plate (202) and the downward step horizontal plate (203) is provided with a first fixing hole (213), and the lower end edge of the first vertical plate (201) is provided with a first mounting hole (214).

4. The device for mounting a direct-mounted aluminum profile frame on a PCB with a liquid crystal display according to claim 3, characterized in that: An upward stepped horizontal plate (304) is provided on a side of the second horizontal plate (302) away from the first vertical plate (201); a second fixing hole (305) corresponding to the first fixing hole (213) is provided on the surface of the upward stepped horizontal plate (304); and a second mounting hole (303) corresponding to the first mounting hole (214) is provided at the upper edge of the second vertical plate (301).

5. The device for mounting a direct-down aluminum profile frame on a PCB board of a liquid crystal display according to claim 4, characterized in that: A foam sticking groove (403) is provided on the lower end surface of the third horizontal plate (402) away from the third vertical plate (401), and a third mounting hole (404) corresponding to the first mounting hole (214) is provided at the lower edge of the third vertical plate (401).

6. The device for mounting a direct-mounted aluminum profile frame on a PCB with a liquid crystal display according to claim 5, characterized in that: The first mounting hole (214), the second mounting hole (303) and the third mounting hole (404) are matched with a first bolt (7) inside, and the first fixing hole (213) and the second fixing hole (305) are matched with a second bolt (8) inside.

7. The device for mounting a direct-mounted aluminum profile frame on a PCB with a liquid crystal display according to claim 1, characterized in that: The aluminum profile bottom frame (2) is formed by heating the aluminum ingot to 661° C. to 750° C. in an industrial frequency furnace and then extruding it through a pre-designed mold using an extruder. The bottom frame has an integral shape and is made of all-aluminum material. The PCB board protection cover (3) and the L-shaped connecting plate (4) are formed by bending an electrolytic iron plate.

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