Backlight source with narrow frame

Abstract

The utility model discloses a narrow-frame backlight source, and relates to the technical field of backlight sources. The narrow-frame backlight source comprises a support, a rectangular plate is arranged on the front surface of the support, the rear end of the rectangular plate slidably penetrates into the support, a barb groove is formed in the lower surface of the rectangular plate, and a connecting plate is fixedly connected to the front side of the lower surface of the rectangular plate. When the diffusion film is pressed, a sliding block feels pressure and compresses three first springs to slide towards the inner wall of a sliding groove, so that the diffusion film is integrally inclined, barbs are located below barb grooves, then a worker loosens a connecting plate and a rectangular plate, and the connecting plate and the rectangular plate can slide forwards under the action of the three first springs; and then, a worker can hold the connecting piece by hand and rotate the connecting piece backwards, and the connecting piece can lift the front end of the whole light guide plate through the connecting rod, so that the light-emitting piece is exposed, the operator can conveniently extract the light-emitting piece, and the replacement or maintenance efficiency of the light-emitting piece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of backlights, and particularly relates to a narrow-bezel backlight. Background Art

[0002] A kind of ultra-thin narrow-bezel backlight with the publication number of CN211293529U. The utility model discloses an ultra-thin narrow-bezel backlight. An installation groove is opened on the upper surface of the bottom plate. The mounting plate is welded to the other end surface at the bottom end of the inner wall of the installation groove, and chip mounting grooves are equidistantly arranged on the mounting plate. The bottom plate is made of aluminum material, and a power cord is installed on the outer surface of one end of the bottom plate. The reflecting plate is glued to the bottom end of the inner wall of the installation groove, and a light guide plate is glued to the upper surface of the reflecting plate. A lower diffuser plate is glued to the upper surface of the light guide plate. A prism sheet is glued to the upper surface of the lower diffuser plate. An upper diffuser plate is glued to the upper surface of the prism sheet. The elastic sheet plates are symmetrically welded to the outer walls on both sides of the bottom plate, and a spring is welded between the lower ends of the inner walls of the elastic sheet plates. The utility model has a compact structure and is convenient to use. It combines the installation structure and the heat dissipation structure of the backlight, enhances the heat dissipation function while facilitating the installation of the backlight, and meets the use requirements of personnel.

[0003] However, for the above-mentioned ultra-thin narrow-bezel backlight, when replacing the light-emitting component, it is necessary to disassemble the backlight and then take out the light-emitting component, which is likely to damage other components of the backlight and the operation steps are complicated. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a narrow-bezel backlight, which can solve the problems that when replacing the light-emitting component, it is necessary to disassemble the backlight and then take out the light-emitting component, which is likely to damage other components of the backlight and the operation steps are complicated.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A narrow-bezel backlight, including a bracket, a rectangular plate is arranged on the front surface of the bracket, the rear end of the rectangular plate slides through the inside of the bracket, and an inverted hook groove is opened on the lower surface of the rectangular plate;

[0006] Wherein, a connecting plate is fixedly connected to the front side of the lower surface of the rectangular plate, and three guide rods are fixedly connected to the front surface of the bracket;

[0007] Wherein, the front ends of the three guide rods all slide through the front surface of the connecting plate, the front ends of the three guide rods are fixedly connected with anti-drop discs, and the outer walls of the three guide rods are all movably sleeved with second springs.

[0008] Wherein, the front ends of the three second springs are all fixedly connected to the connecting plate, the rear ends of the three second springs are all fixedly connected to the front surface of the bracket, and a rectangular block is fixedly connected to the bottom of the bracket.

[0009] Preferably, a chute is provided on the upper surface of the rectangular block, a slider is slidably connected to the inner wall of the chute, a rectangular groove is provided on the lower surface of the slider, and three first springs are fixedly connected to the top of the rectangular groove. The lower ends of the three first springs are fixedly connected to the bottom of the chute.

[0010] Preferably, connecting rods are rotatably connected to the left and right inner walls of the bracket. The right end of the connecting rod on the right side rotatably penetrates the outer surface of the bracket, and a connecting member is fixedly connected to the right end of the connecting rod on the right side.

[0011] Preferably, a light guide plate is fixedly connected to the opposite surfaces of the two connecting rods, a fixing plate is fixedly connected to the front surface of the light guide plate, and a barb adapted to the barb groove is fixedly connected to the upper surface of the fixing plate.

[0012] Preferably, a diffusion film is provided on the upper surface of the light guide plate, and a reflection film is provided on the lower surface of the light guide plate.

[0013] Preferably, a placement groove is provided on the front surface of the light guide plate, and a light-emitting member is provided inside the placement groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] (1). For this narrow-bezel backlight, when the staff pushes the connecting plate and the rectangular plate backward, the three second springs will be compressed. When the rectangular plate moves backward, the barb groove and the barb will be disengaged. Subsequently, the staff presses the diffusion film as a whole downward. The slider will compress the three first springs and slide toward the inner wall of the chute, making the diffusion film as a whole in an inclined state and the barb located below the barb groove. Then the staff releases the connecting plate and the rectangular plate, and under the action of the three second springs, the connecting plate and the rectangular plate will slide forward. Then the staff can hold the connecting member, and then rotate the connecting member backward. The connecting member will raise the front end of the light guide plate as a whole through the connecting rod, exposing the light-emitting member, thereby facilitating the operator to extract the light-emitting member and improving the replacement or maintenance efficiency of the light-emitting member.

[0016] (2). For this narrow-bezel backlight, when the staff slowly releases the diffusion film as a whole to raise the fixing plate, when the barb is parallel to the barb groove, the staff releases the connecting plate and the rectangular plate, and under the action of the three second springs, the connecting plate and the rectangular plate will slide forward, making the barb and the barb groove automatically snap together to complete the fixation of the diffusion film as a whole. At the same time, the first spring and the slider will act upward on the reflection film to improve the firmness when the barb and the barb groove are snapped together, and further improve the stability of the diffusion film as a whole after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the drawings and embodiments:

[0018] Figure 1This is a schematic structural diagram of the overall utility model;

[0019] Figure 2 This is a bottom-up view of the lower surface of the reflection film of the utility model;

[0020] Figure 3 This is a schematic diagram of the surface of the rectangular block of the utility model;

[0021] Figure 4 This is a schematic diagram of the surface of the light guide plate of the utility model;

[0022] Figure 5 is Figure 2 an enlarged schematic diagram of part A in

[0023] Reference numerals: 1, bracket; 2, diffusion film; 3, connecting plate; 4, rectangular plate; 5, guide rod; 6, rectangular block; 7, connecting rod; 8, connecting piece; 9, reflection film; 10, slider; 11, rectangular groove; 12, chute; 13, first spring; 14, second spring; 15, placement groove; 16, light-emitting component; 17, light guide plate; 18, anti-detachment disc; 19, barb; 20, fixing plate. Detailed implementation manners

[0024] This part will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] In the description of the utility model, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0027] In the description of the utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the utility model in combination with the specific content of the technical solution.

[0028] Please refer to Figures 1-5 , the present utility model provides a technical solution: a narrow bezel backlight, which includes a bracket 1. A rectangular plate 4 is arranged on the front surface of the bracket 1. The rear end of the rectangular plate 4 slides through the interior of the bracket 1, and an inverted hook groove is formed on the lower surface of the rectangular plate 4;

[0029] Among them, a connecting plate 3 is fixedly connected to the front side of the lower surface of the rectangular plate 4, and three guide rods 5 are fixedly connected to the front surface of the bracket 1;

[0030] Among them, the front ends of the three guide rods 5 all slide through the front surface of the connecting plate 3, a anti - shedding disc 18 is fixedly connected to the front ends of the three guide rods 5, and a second spring 14 is movably sleeved on the outer wall of each of the three guide rods 5.

[0031] Among them, the front ends of the three second springs 14 are all fixedly connected to the connecting plate 3, the rear ends of the three second springs 14 are all fixedly connected to the front surface of the bracket 1, and a rectangular block 6 is fixedly connected to the bottom of the bracket 1.

[0032] Furthermore, a sliding groove 12 is formed on the upper surface of the rectangular block 6. A slider 10 is slidably connected to the inner wall of the sliding groove 12. A rectangular groove 11 is formed on the lower surface of the slider 10. Three first springs 13 are fixedly connected to the top of the rectangular groove 11, and the lower ends of the three first springs 13 are all fixedly connected to the bottom of the sliding groove 12.

[0033] Furthermore, connecting rods 7 are rotatably connected to the left and right inner walls of the bracket 1. The right end of the connecting rod 7 on the right side rotatably penetrates the outer surface of the bracket 1, and a connecting member 8 is fixedly connected to the right end of the connecting rod 7 on the right side.

[0034] Furthermore, a light guide plate 17 is fixedly connected to the opposite surfaces of the two connecting rods 7. A fixing plate 20 is fixedly connected to the front surface of the light guide plate 17, and an inverted hook 19 adapted to the inverted hook groove is fixedly connected to the upper surface of the fixing plate 20.

[0035] Furthermore, a diffusion film 2 is arranged on the upper surface of the light guide plate 17, and a reflection film 9 is arranged on the lower surface of the light guide plate 17.

[0036] Furthermore, a placement groove 15 is formed on the front surface of the light guide plate 17, and a light - emitting member 16 is arranged inside the placement groove 15.

[0037] Further, when repairing or replacing the light-emitting component 17, first, the staff member pushes the connecting plate 3 and the rectangular plate 4 backward, and the three second springs 14 will be compressed. When the rectangular plate 4 moves backward, the barb groove will be disengaged from the barb 19. Subsequently, the staff member presses the diffusion film 2 as a whole downward. The slider 10 will feel the pressure and compress the three first springs 13 to slide toward the inner wall of the sliding groove 12, making the diffusion film 2 as a whole in an inclined state and positioning the barb 19 below the barb groove. Then, the staff member releases the connecting plate 3 and the rectangular plate 4. Under the action of the three second springs 14, the connecting plate 3 and the rectangular plate 4 will slide forward. Then, the staff member can hold the connecting member 8, and then rotate the connecting member 8 backward. The connecting member 8 will raise the front end of the light guide plate 17 as a whole through the connecting rod 7, exposing the light-emitting component 16, thereby facilitating the operator to extract the light-emitting component 16 and improving the replacement or maintenance efficiency of the light-emitting component 16.

[0038] Further, after the replacement or maintenance is completed, the staff member resets the diffusion film 2 as a whole, and then presses the diffusion film 2 as a whole. The slider 10 will feel the pressure and compress the three first springs 13 to slide toward the inner wall of the sliding groove 12, making the diffusion film 2 as a whole in an inclined state. At the same time, the staff member pushes the connecting plate 3 and the rectangular plate 4 backward, and the three second springs 14 will be compressed. Then, the staff member slowly releases the diffusion film 2 as a whole, causing the fixing plate 20 to rise. When the barb 19 is parallel to the barb groove, the staff member releases the connecting plate 3 and the rectangular plate 4. Under the action of the three second springs 14, the connecting plate 3 and the rectangular plate 4 will slide forward, making the barb 19 automatically snap into the barb groove, completing the fixation of the diffusion film 2 as a whole. At the same time, the first spring 13 and the slider 10 will act upward on the reflection film 9, improving the firmness when the barb 19 is snapped into the barb groove and further enhancing the stability of the diffusion film 2 as a whole after installation.

[0039] Working principle: When repairing or replacing the light-emitting component 17, first, the staff member pushes the connecting plate 3 and the rectangular plate 4 backward, and the three second springs 14 will be compressed. When the rectangular plate 4 moves backward, the barb groove will be disengaged from the barb 19. Subsequently, the staff member presses the diffusion film 2 as a whole downward. The slider 10 will feel the pressure and compress the three first springs 13 to slide toward the inner wall of the sliding groove 12, making the diffusion film 2 as a whole in an inclined state and positioning the barb 19 below the barb groove. Then, the staff member releases the connecting plate 3 and the rectangular plate 4. Under the action of the three second springs 14, the connecting plate 3 and the rectangular plate 4 will slide forward. Then, the staff member can hold the connecting member 8, and then rotate the connecting member 8 backward. The connecting member 8 will raise the front end of the light guide plate 17 as a whole through the connecting rod 7, exposing the light-emitting component 16, thereby facilitating the operator to extract the light-emitting component 16 and improving the replacement or maintenance efficiency of the light-emitting component 16.

[0040] Further, after replacement or maintenance, the staff reset the entire diffusion film 2, and then press the entire diffusion film 2. The slider 10 will compress the three first springs 13 and slide towards the inner wall of the chute 12, making the entire diffusion film 2 inclined. At the same time, the staff push the connecting plate 3 and the rectangular plate 4 backward, and the three second springs 14 will be compressed. Then the staff slowly release the entire diffusion film 2, causing the fixing plate 20 to rise. When the barb 19 is parallel to the barb groove, the staff release the connecting plate 3 and the rectangular plate 4. Under the action of the three second springs 14, the connecting plate 3 and the rectangular plate 4 will slide forward, making the barb 19 and the barb groove automatically snap together, completing the fixation of the entire diffusion film 2. At the same time, the first spring 13 and the slider 10 will act upward on the reflection film 9, improving the firmness when the barb 19 and the barb groove are snapped together, and further improving the stability of the entire diffusion film 2 after installation.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A narrow bezel backlight, characterized in that, Including: Bracket (1); A rectangular plate (4) is arranged on the front surface of the bracket (1), the rear end of the rectangular plate (4) slides through the interior of the bracket (1), and a barb groove is formed on the lower surface of the rectangular plate (4); Among them, a connecting plate (3) is fixedly connected to the front side of the lower surface of the rectangular plate (4), and three guide rods (5) are fixedly connected to the front surface of the bracket (1); Among them, the front ends of the three guide rods (5) all slide through the front surface of the connecting plate (3), a anti - detachment disc (18) is fixedly connected to the front ends of the three guide rods (5), and a second spring (14) is movably sleeved on the outer walls of the three guide rods (5); Among them, the front ends of the three second springs (14) are all fixedly connected to the connecting plate (3), the rear ends of the three second springs (14) are all fixedly connected to the front surface of the bracket (1), and a rectangular block (6) is fixedly connected to the bottom of the bracket (1).

2. The narrow bezel backlight according to claim 1, characterized in that: A chute (12) is formed on the upper surface of the rectangular block (6), a slider (10) is slidably connected to the inner wall of the chute (12), a rectangular groove (11) is formed on the lower surface of the slider (10), three first springs (13) are fixedly connected to the top of the rectangular groove (11), and the lower ends of the three first springs (13) are all fixedly connected to the bottom of the chute (12).

3. A narrow border backlight according to claim 1, characterized in that: Both the left and right inner walls of the bracket (1) are rotatably connected with a connecting rod (7), the right end of the connecting rod (7) on the right side rotates through the outer surface of the bracket (1), and a connecting piece (8) is fixedly connected to the right end of the connecting rod (7) on the right side.

4. A narrow border backlight according to claim 3, characterized in that: A light guide plate (17) is fixedly connected to the opposite surfaces of the two connecting rods (7), a fixing plate (20) is fixedly connected to the front surface of the light guide plate (17), and a barb (19) adapted to the barb groove is fixedly connected to the upper surface of the fixing plate (20).

5. A narrow bezel backlight according to claim 4, characterized in that: A diffusion film (2) is arranged on the upper surface of the light guide plate (17), and a reflection film (9) is arranged on the lower surface of the light guide plate (17).

6. The narrow border backlight according to claim 4, characterized in that: A placement groove (15) is formed on the front surface of the light guide plate (17), and a light emitting element (16) is arranged inside the placement groove (15).

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