Backlight light guide groove structure convenient to replace
By designing an easy-to-replace backlight guide channel structure, and utilizing sliding and support mechanisms to achieve stable installation and convenient disassembly of the light strip, the problem of inconvenient light strip replacement in traditional structures is solved, maintenance efficiency is improved, and the optical film is protected.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YUNHONGHUI ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional backlight light guide groove structures are difficult to disassemble and assemble easily, making it inconvenient to replace and maintain the light strips, and easily damaging the optical film.
An easy-to-replace structure is designed, including components such as a housing, light guide groove, sliding cover, spring and ball bearing. The sliding and support mechanism enables stable installation and convenient disassembly of the light strip. The cooperation between the light guide groove and the housing, combined with the elastic support structure, enables convenient replacement of the light strip.
It enables convenient disassembly and maintenance of the light strip, reduces maintenance costs, improves work efficiency, and avoids damage to the optical film.
Smart Images
Figure CN224581785U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of light guide groove technology, and in particular to a backlight light guide groove structure that is easy to replace. Background Technology
[0002] Backlight is the core of the lighting system for non-self-emissive displays such as LCDs. It is located behind the liquid crystal panel and illuminates the pixel layer by emitting light evenly, making the image visible. The LED strip is the heart component of the backlight, but the backlight is a complete optical system that includes LED strips, light guide plates, diffuser plates, etc.
[0003] The light guide groove is used for the installation of light strips. In side-lit backlights, the light strips are placed on the side of the light guide plate, and the light enters from the side. Through the principle of total internal reflection, the light propagates within the plate in conjunction with the light guide plate. Traditional light strips are fixed to the metal back plate with screws, and disassembly and assembly require tools, which can easily scratch the optical film and make replacement and maintenance inconvenient. Therefore, we propose a backlight light guide groove structure that is easy to replace to solve the existing problems. Utility Model Content
[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a backlight light guide groove structure that is easy to replace.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a backlight light guide groove structure that is easy to replace, comprising a housing, a front plate, and a light guide groove. A light guide plate is provided inside the housing, and a diffuser plate is provided at the upper end of the light guide plate. A light guide groove is provided on the side of the housing, and a light strip is provided inside the light guide groove. A sliding cover is provided on the front side of the housing, and a front plate is provided inside the front end of the housing. A second spring is provided at one end of the front plate. A travel groove communicating with the mounting port is provided at the front end of the housing. A travel block is provided at one end of the second spring and slidably installed inside the travel groove. A sliding cover covering the front side of the mounting port is provided at the front end of the travel block.
[0006] Preferably, a positioning rod two is provided at one end of the front plate, located inside the spring two. A positioning cylinder two, connected to the travel block, is sleeved on the outer side of one end of the positioning rod two. The positioning rod two and the positioning cylinder two are slidably installed to guide the spring two during the extension and retraction process, preventing the spring two from shifting and ensuring stable sliding between the travel block and the sliding cover.
[0007] Preferably, the sliding cover has anti-slip texture at its front end, the inner wall of the travel groove has a wiring groove, and one end of the travel block has a stop bar located in front of the travel groove. The anti-slip texture increases friction with the hand, the wiring groove is used for wiring, and the stop bar shields the travel groove.
[0008] Preferably, the upper and lower inner walls of the light guide groove are provided with slots, and the light strip is slidably installed inside the slots. The light strip is positioned inside the light guide groove by slidingly inserting into the slots.
[0009] Preferably, the inner walls of both the upper and lower sides of the housing are provided with roller grooves, and the upper and lower ends of the light guide groove are rotatably mounted with ball bearings that are rolled inside the roller grooves. When the light guide groove moves, the ball bearings slide inside the roller grooves to provide sliding support for the light guide groove.
[0010] Preferably, a push plate is provided inside the rear end of the housing, located behind the light guide groove, and a spring is provided between the push plate and the inner wall of the housing. When the sliding cover releases its support for the front end of the light guide groove, the push plate, elastically supported by the spring, pushes the light guide groove toward the mounting opening position, assisting in the pull-out of the light guide groove.
[0011] Preferably, the spring is internally provided with a positioning rod and a positioning cylinder, which are slidably connected and have opposite ends connected to the push plate and the inner wall of the light guide groove, respectively. When the spring extends or retracts, the positioning rod slides inside the positioning cylinder, guiding the spring and ensuring that the push plate is subjected to uniform force, thus stably pushing the light guide groove.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. The backlight strips of this utility model are located on both sides of the light guide plate and installed inside the light guide groove. The light guide groove shell moves back and forth and slides out from the side corner of the display screen. It is supported and fixed by the matching light guide groove. The light guide groove is fixed to the display screen shell, realizing the assembly of the light strip inside the side of the display screen shell. After assembly, the sliding cover supports and positions the front end of the light guide groove and fixes the installed light guide groove. The sliding cover has elastic support. The convenient opening and closing of the light guide groove facilitates the convenient disassembly and maintenance of the light strips in the backlight. Attached Figure Description
[0014] Figure 1 This is a side sectional three-dimensional structural schematic diagram of the present invention;
[0015] Figure 2 This is a partial front view three-dimensional structural diagram of the shell of this utility model;
[0016] Figure 3 This is a side view of the three-dimensional structure of the push plate of this utility model;
[0017] Figure 4 This is a partial rear cross-sectional perspective view of the shell structure of this utility model;
[0018] Figure 5 This is a partial top view of the three-dimensional structure of the light guide groove of this utility model.
[0019] Reference numerals in the attached drawings: 1. Housing; 2. Light guide plate; 3. Diffuser plate; 4. Baffle; 5. Sliding cover; 6. Front plate; 7. Stroke groove; 8. Stroke block; 9. Mounting port; 10. Roller groove; 11. Positioning cylinder one; 12. Spring one; 13. Positioning rod one; 14. Push plate; 15. Lamp strip; 16. Wiring groove; 17. Light guide groove; 18. Ball bearing; 19. Slot; 20. Spring two; 21. Positioning rod two; 22. Positioning cylinder two. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] like Figures 1-5 As shown, the present invention proposes a backlight light guide groove structure that is easy to replace, including a housing 1, a front plate 6 and a light guide groove 17. A light guide plate 2 is provided inside the housing 1, and a diffuser plate 3 is provided at the upper end of the light guide plate 2. A light guide groove 17 is provided on the side of the housing 1, and a light strip 15 is provided inside the light guide groove 17. A sliding cover 5 is provided on the front side of the housing 1. A front plate 6 is provided inside the front end of the housing 1. A spring 20 is provided at one end of the front plate 6. A travel groove 7 communicating with the mounting port 9 is provided at the front end of the housing 1. A travel block 8 is slidably installed inside the travel groove 7 at one end of the spring 20. A sliding cover 5 covering the front side of the mounting port 9 is provided at the front end of the travel block 8.
[0022] A positioning rod 21 located inside the spring 20 is provided at one end of the front plate 6. A positioning cylinder 22 connected to the stroke block 8 is sleeved on the outer side of one end of the positioning rod 21.
[0023] The front end of the sliding cover 5 is provided with anti-slip texture, the inner wall of the stroke groove 7 is provided with a wiring groove 16, and one end of the stroke block 8 is provided with a stop strip 4 located in front of the stroke groove 7.
[0024] The light guide groove 17 has slots 19 on both the upper and lower inner walls, and the light strip 15 is slidably installed inside the slots 19.
[0025] The inner walls of the upper and lower sides of the housing 1 are provided with roller grooves 10, and the upper and lower ends of the light guide groove 17 are rotatably installed with ball bearings 18 that are rolled inside the roller grooves 10.
[0026] Inside the rear end of the housing 1, there is a push plate 14 located behind the light guide groove 17, and a spring 12 is provided between the push plate 14 and the inner wall of the housing 1.
[0027] The spring 12 is equipped with a positioning rod 13 and a positioning cylinder 11, which are slidably connected and whose opposite ends are respectively connected to the inner wall of the push plate 14 and the light guide groove 17.
[0028] Based on the implementation steps of Embodiment 1: The light strip 15 is slidably installed inside the slots 19 provided on the upper and lower inner walls of the light guide groove 17. The slots 19 are used to accurately position the light strip 15 to ensure that the light strip 15 is installed firmly. Then, the light guide groove 17 containing the light strip 15 is placed inside the housing 1. At this time, the ball bearings 18 rotatably installed inside the upper and lower ends of the light guide groove 17 will roll and be installed in the rolling grooves 10 opened on the upper and lower inner walls of the housing 1. During the movement of the light guide groove 17, the cooperation between the ball bearings 18 and the rolling grooves 10 provides sliding support for the light guide groove 17, making its movement smoother and able to accurately reach the designated position.
[0029] Meanwhile, the positioning rod 21, which is slidably installed inside the spring 20, and the positioning cylinder 22, which is connected to the stroke block 8, cooperate with each other to guide the extension and retraction of the spring 20, prevent the spring 20 from deviating, and ensure that the stroke block 8 can slide stably in the stroke groove 7, which is opened at the front end of the housing 1 and communicates with the installation port 9. The stroke block 8 drives the sliding cover 5, which covers the front side of the installation port 9, to move until the sliding cover 5 completely covers the installation port 9, providing front-end support and positioning for the light guide groove 17, thus completing the installation. Moreover, the anti-slip texture set at the front end of the sliding cover 5 increases the friction with the hand, making it easier to operate. The wiring groove 16 opened on the inner wall of the stroke groove 7 can be used for wiring, making the internal layout more regular.
[0030] By designing a reciprocating light guide groove 17, the light strip 15 is installed in it. The light guide groove 17 and the housing 1 are used to assemble the light strip 15 inside the side of the display housing 1. At the same time, the elastic support structure composed of spring 20, stroke block 8 and sliding cover 5 is used to fix the installed light guide groove 17 to ensure the stability of the structure.
[0031] This design effectively solves the problems associated with traditional LED strip 15 installation methods. Traditional LED strip 15 is secured to a metal backplate with screws, requiring tools for disassembly and assembly, and easily scratching the optical film, making replacement and maintenance inconvenient. In this structure, when LED strip 15 needs to be replaced or maintained, simply pull the sliding cover 5 to release the support on the front end of the light guide groove 17. At this time, the push plate 14, located inside the rear end of the housing 1 behind the light guide groove 17 and elastically supported by spring 12, will push the light guide groove 17 towards the mounting port 9 under the action of spring 12, assisting in the pull-out of the light guide groove 17. The positioning rod 13 and positioning cylinder 11 inside spring 12 slide against each other, guiding spring 12 and ensuring that the push plate 14 is evenly stressed, stably pushing the light guide groove 17. After the light guide groove 17 is removed, the internal LED strip 15 can be easily replaced or maintained. The operation is simple and quick, greatly improving work efficiency, reducing maintenance costs, and providing great convenience for the use and maintenance of backlights.
[0032] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A backlight light guide structure which is convenient to replace, comprising a housing (1), a front plate (6) and a light guide groove (17), characterized in that: The housing (1) is provided with a light guide plate (2) inside, and a diffuser plate (3) is provided at the upper end of the light guide plate (2). The housing (1) is provided with a light guide groove (17) on the side, and a light strip (15) is provided inside the light guide groove (17). A sliding cover (5) is provided on the front side of the housing (1). A front plate (6) is provided inside the front end of the housing (1). A spring (20) is provided at one end of the front plate (6). A travel groove (7) communicating with the mounting port (9) is provided at the front end of the housing (1). A travel block (8) is provided at one end of the spring (20) and is slidably installed inside the travel groove (7). A sliding cover (5) covering the front side of the mounting port (9) is provided at the front end of the travel block (8).
2. The replaceable backlight light guide structure of claim 1, wherein: The front plate (6) is provided with a positioning rod (21) located inside the spring (20) at one end, and a positioning cylinder (22) connected to the stroke block (8) is sleeved on the outer side of the positioning rod (21).
3. The replaceable backlight light guide structure of claim 1, wherein: The sliding cover (5) has anti-slip texture at the front end, the inner wall of the travel groove (7) has a wiring groove (16), and one end of the travel block (8) has a stop bar (4) located in front of the travel groove (7).
4. The easily replaceable backlight light guide structure of claim 1, wherein: The light guide groove (17) has slots (19) on both the upper and lower inner walls, and the light strip (15) is slidably installed inside the slots (19).
5. The easily replaceable backlight light guide structure of claim 1, wherein: The inner walls of the upper and lower sides of the housing (1) are provided with roller grooves (10), and the upper and lower ends of the light guide groove (17) are rotatably installed with ball bearings (18) that are rolled inside the roller grooves (10).
6. The easily replaceable backlight light guide structure of claim 1, wherein: The rear end of the housing (1) is provided with a push plate (14) located behind the light guide groove (17), and a spring (12) is provided between the push plate (14) and the inner wall of the housing (1).
7. The easily replaceable backlight light guide structure of claim 6, wherein: The spring (12) is provided with a positioning rod (13) and a positioning cylinder (11) that are slidably inserted and connected at opposite ends to the inner walls of the push plate (14) and the light guide groove (17), respectively.