Light guide plate with powerful cleaning function

Abstract

The embodiment of the utility model provides a light guide plate with powerful cleaning, and relates to the technical field of light guide plates. The light guide plate with the powerful cleaning function comprises a base plate, the light guide plate is arranged on the upper surface of the base plate, an installation frame is installed on the base plate in a sliding mode, and a first driving assembly for driving the installation frame to move is arranged on the base plate; the mounting frame comprises a mounting plate, a vibration brush and a cleaning rolling brush are arranged on the lower surface of the mounting plate, a second driving assembly is further arranged on the lower surface of the mounting plate, and the second driving assembly is used for driving the vibration brush to vibrate and driving the cleaning rolling brush to rotate. By arranging a cooperative structure of the vibration brush and the cleaning rolling brush, dust is loosened through the vibration brush firstly, then the dust is removed through the cleaning rolling brush, stubborn dust which is long in adhesion time and high in adhesion can be effectively dealt with, the cleaning strength and the cleaning efficiency are remarkably improved, and powerful cleaning in the true sense is achieved.

Description

Technical Field

[0001] This utility model relates to the field of light guide plate technology, specifically to a light guide plate with strong cleaning power. Background Technology

[0002] As a key optical component in backlights or display devices, the cleanliness of the light guide plate directly affects the light transmission efficiency and light emission uniformity. However, during prolonged use, the surface of the light guide plate easily attracts dust, particulate matter, and other contaminants from the air, especially outdoors or in dusty environments. Dust accumulation can lead to decreased light guiding efficiency, uneven light spots, or reduced overall brightness, affecting display performance and lifespan.

[0003] To keep the light guide plate clean, common cleaning methods currently include manual disassembly and cleaning, and the use of automatic roller brush devices. While manual cleaning achieves good results, it is cumbersome, inefficient, and unsuitable for equipment requiring frequent maintenance. Automatic roller brush structures achieve cleaning by having bristles contact the surface of the light guide plate. To avoid scratching or abrading the light guide plate, roller brushes typically use soft bristles. However, if dust has been adhering for a long time or is firmly attached, soft bristles may not be able to completely remove the dust during cleaning, resulting in unsatisfactory cleaning results, or even leaving dust behind after cleaning, affecting overall maintenance efficiency and display quality. Utility Model Content

[0004] According to an embodiment of the present invention, a light guide plate with strong cleaning power is provided to solve the problems mentioned in the background art.

[0005] In a first aspect, a light guide plate with strong cleaning power is provided.

[0006] The powerful cleaning light guide plate includes: a substrate, a light guide plate disposed on the upper surface of the substrate, a mounting frame slidably mounted on the substrate, and a first driving component for driving the mounting frame to move on the substrate; the mounting frame includes a mounting plate, a vibrating brush and a cleaning roller brush disposed on the lower surface of the mounting plate, and a second driving component disposed on the lower surface of the mounting plate, the second driving component being used to drive the vibrating brush to vibrate and the cleaning roller brush to rotate.

[0007] Preferably, the mounting bracket further includes two connecting parts and a driving part; the substrate is provided with two sliding grooves, the connecting parts pass through the sliding grooves and are slidably connected to the sliding grooves, the connecting parts are connected to the driving part, the first driving component is installed on the side of the substrate away from the light guide plate, and the first driving component is connected to the driving part.

[0008] Preferably, the first drive assembly includes a first motor and a lead screw, the lead screw is rotatably connected to the base plate, the lead screw passes through the drive part and is threadedly connected to the drive part, the lead screw is connected to the output end of the first motor, and the first motor is used to drive the lead screw to rotate.

[0009] Preferably, the vibrating brush includes a brush plate, brush bristles, and a spring plate; the brush bristles are disposed on the brush plate, the spring plate is connected to the brush plate, and the other end of the spring plate is connected to the mounting plate;

[0010] The second drive assembly includes a second motor, a transmission belt, and a cam; the cleaning roller brush is rotatably mounted between the two connecting parts, the transmission belt is sleeved on the cleaning roller brush, the cam is connected to the transmission belt, the second motor is mounted on the connecting part, and the output end of the second motor is connected to the cam for driving the cam to rotate.

[0011] Preferably, the mounting bracket further includes an extension and a slider mounted on the extension; the extension is connected to the mounting plate, a guide rail is provided on the base plate, and the slider is slidably connected to the guide rail.

[0012] Preferably, the mounting plate is also provided with a scraper.

[0013] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0014] 1. The light guide plate provided by this utility model has a powerful cleaning function. By setting a cooperative structure of a vibrating brush and a cleaning roller brush, the vibrating brush first loosens the dust, and then the cleaning roller brush removes the dust. It can effectively deal with stubborn dust with long adhesion time and strong adhesion, significantly improve the cleaning power and cleaning efficiency, and achieve true "powerful cleaning".

[0015] 2. The first motor drives the mounting bracket to move, and the second motor drives the cleaning mechanism to work. The entire cleaning process is automated, avoiding the tediousness and labor intensity of traditional manual disassembly and cleaning. It is suitable for light guide plate systems that are used frequently for a long time and have high requirements for cleanliness.

[0016] 3. By setting an extension and a slider on the mounting bracket, a double-rail guide structure is formed in conjunction with the guide rail on the base plate. This structure provides multi-point support and positioning with the slide groove, significantly improving the balance and guiding accuracy of the mounting bracket during operation. This avoids posture deviations caused by vibration or brushing, ensuring cleaning quality.

[0017] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0018] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0019] Figure 1 A first-view perspective perspective view of a light guide plate with powerful cleaning capability according to an embodiment of the present invention is shown.

[0020] Figure 2 A second-view perspective perspective schematic diagram of a light guide plate with powerful cleaning capability according to an embodiment of the present invention is shown.

[0021] Figure 3 A perspective view of a mounting bracket with a powerful cleaning light guide plate according to an embodiment of the present invention is shown.

[0022] Figure 4 A bottom view of the mounting bracket with a powerful cleaning light guide plate according to an embodiment of the present invention is shown.

[0023] Figure 5 A schematic diagram of the connection structure between the second drive assembly and the vibrating brush, which has a powerful cleaning light guide plate according to an embodiment of the present invention, is shown.

[0024] Explanation of reference numerals in the attached figures

[0025] 1-Baseboard, 11-Slide groove, 12-Guide rail, 2-Light guide plate, 3-Mounting bracket, 31-Mounting plate, 32-Connecting part, 33-Drive part, 34-Extension part, 35-Slider, 36-Scraper, 4-First drive assembly, 41-First motor, 42-Lead screw, 5-Vibrating brush, 51-Brush plate, 52-Brush bristles, 53-Spring plate, 6-Cleaning roller brush, 7-Second drive assembly, 71-Second motor, 72-Transmission belt, 73-Cam. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0028] like Figures 1 to 5 As shown, a light guide plate structure with a powerful cleaning function includes: a substrate 1, a light guide plate 2 disposed on the upper surface of the substrate 1; a mounting bracket 3 for cleaning the surface of the light guide plate 2 is slidably mounted on the substrate 1, and a first driving component 4 for driving the mounting bracket 3 to move along the surface of the light guide plate 2 is provided on the substrate 1.

[0029] The mounting frame 3 includes a mounting plate 31. The lower surface of the mounting plate 31 is provided with a vibrating brush 5 for vibrating dust removal and a cleaning roller brush 6 for rolling cleaning. The lower surface of the mounting plate 31 is also provided with a second driving component 7 for driving the vibrating brush 5 to generate vibration and the cleaning roller brush 6 to rotate.

[0030] During use, the first drive assembly 4 and the second drive assembly 7 are activated first. The first drive assembly 4 drives the mounting bracket 3 to slide from top to bottom along the surface of the light guide plate 2, and the mounting bracket 3 drives the vibrating brush 5 and the cleaning roller brush 6 to move synchronously. At the same time, the second drive assembly 7 drives the vibrating brush 5 to vibrate, so that the dust particles attached to the surface of the light guide plate 2 are loosened and removed, and drives the cleaning roller brush 6 to rotate, so as to sweep away and transfer the dust loosened by the vibrating brush 5 to the bottom area of ​​the light guide plate 2 and remove it from the surface of the light guide plate.

[0031] In this embodiment, the mounting frame 3 further includes two connecting parts 32 and a driving part 33. The two connecting parts 32 are respectively disposed at both ends of the mounting plate 31 and connected to the driving part 33 to achieve stable support and driving transmission for the entire mounting frame 3. To limit the movement path of the mounting frame 3, two spaced-apart sliding grooves 11 are provided on the upper surface of the substrate 1 along the vertical direction of the light guide plate 2. The two connecting parts 32 are respectively inserted into the sliding grooves 11 and form a sliding fit structure with the sliding grooves 11. That is, the connecting parts 32 can slide in the sliding grooves 11 along the vertical direction of the light guide plate 2, while limiting their displacement in the horizontal direction. This structure makes the mounting frame 3 have high guidance and stability during up and down movement, effectively preventing lateral swaying caused by the brush bristles contacting the surface of the light guide plate 2 during cleaning, thereby avoiding problems such as scratches and uneven cleaning.

[0032] The driving unit 33 is located on the back of the mounting frame 3, specifically in the central region between the connecting parts 32, serving as a power transmission connection structure between the mounting frame 3 and the first driving assembly 4. The first driving assembly 4 is mounted on the side of the substrate 1 away from the light guide plate 2, i.e., on the back of the light guide plate 2, allowing the driving device to be set independently of the light guide plate, avoiding obstruction or interference to the light guide surface, thereby maintaining the normal light emission and display performance of the light guide plate 2.

[0033] In actual use, the first drive assembly 4 is activated and, through its connection with the drive unit 33, drives the drive unit 33 to move vertically. Since the drive unit 33 is connected to the two connecting parts 32, the movement of the drive unit 33 can synchronously drive the connecting parts 32 to slide within the slide groove 11, thereby driving the mounting plate 31 and the vibrating brush 5 and cleaning roller brush 6 mounted on its lower surface to move together, thus achieving a comprehensive cleaning operation covering the entire surface of the light guide plate 2.

[0034] The chute 11 not only provides a physical guiding structure but also, to a certain extent, shares the reaction force generated during the contact between the roller brush and the light guide plate 2, making the overall operation of the mounting frame 3 more stable and reducing the impact of local vibrations on cleaning accuracy. Simultaneously, this structure facilitates later maintenance and assembly; the chute 11 can be integrally formed using standard guide rails or profiles, ensuring structural strength and consistency, which is beneficial for its widespread application in large-size light guide plate cleaning systems. In summary, this structure, through the rational combination of mechanical guide rails and drive structure, effectively improves the operational stability and durability of the entire cleaning device, further ensuring the continuity and efficiency of the cleaning process, and has significant practical value.

[0035] In this embodiment, the first drive assembly 4 includes a first motor 41 and a lead screw 42 connected thereto. The first motor 41 is the power source for moving the mounting bracket 3 up and down. Preferably, it is a stepper motor or servo motor with stable output speed and high control accuracy to meet the speed control and displacement accuracy requirements during the cleaning process. The lead screw 42 is disposed on the base plate 1 and forms a rotatable connection structure with the base plate 1 through a bearing assembly or a rotating shaft seat, thereby ensuring that it can rotate stably under the drive of the motor without axial displacement.

[0036] The axis of the lead screw 42 is arranged vertically to the light guide plate 2, that is, parallel to the moving path direction of the mounting bracket 3. The middle part of the lead screw 42 passes through the drive unit 33 and is threadedly connected to its inner hole with matching threads. That is, the drive unit 33 and the lead screw 42 form a nut and lead screw transmission structure. This structure allows the drive unit 33 to move axially (i.e., vertically) under the action of the lead screw thread when the lead screw 42 rotates, realizing the conversion of rotational motion into linear motion.

[0037] The output shaft of the first motor 41 is fixedly connected to one end of the lead screw 42 via a coupling or an integral machining method to ensure the reliability and coaxiality of torque transmission and to avoid eccentricity, wear or reduced transmission efficiency during long-term operation.

[0038] In actual use, the user starts the first motor 41 through the control system. After the first motor 41 starts working, its output shaft begins to rotate, driving the connected lead screw 42 to rotate around its own axis. Since the lead screw 42 and the drive unit 33 are connected by a threaded structure, the rotation of the lead screw 42 will generate an axial thrust, pushing the drive unit 33 to move linearly along the axial direction of the lead screw. Since the drive unit 33 is connected to the connecting part 32, and the connecting part 32 is fixedly connected to the mounting plate 31, the linear movement of the drive unit 33 will synchronously drive the mounting plate 31 and the cleaning structure set on it to move as a whole, ultimately realizing the up-and-down sliding of the mounting frame 3 along the surface of the light guide plate 2.

[0039] In this embodiment, the vibrating brush 5 is used to perform preliminary vibration cleaning of the surface of the light guide plate 2. Its structure includes a brush plate 51, brush bristles 52, and a spring sheet 53. The brush plate 51 serves as a support structure, on which a plurality of brush bristles 52 are densely mounted. The brush bristles 52 can be made of a flexible polymer material, possessing good flexibility and wear resistance to meet the cleaning requirements of the light guide plate 2 surface while avoiding scratches on its optical surface. The brush bristles 52 are fixed to the brush plate 51 by injection molding, bonding, or embedding, arranged perpendicular to the lower surface of the brush plate 51, and directly contact the surface of the light guide plate 2 during use.

[0040] The spring plate 53 is a metal sheet structure with good elasticity. One end is connected to the brush plate 51, and the other end is connected to the mounting plate 31. The brush plate 51 is suspended or supported below the mounting plate 31 by the spring plate 53. This structure allows the brush plate 51 to generate controllable reciprocating motion when subjected to external force or cam excitation. The spring plate 53 plays a role in flexible connection and reset, that is, after being deformed by the cam, it can quickly return to its initial shape, thereby achieving a periodic vibration effect.

[0041] The second drive assembly 7 is used to simultaneously drive the rotation of the cleaning roller brush 6 and the reciprocating motion of the vibrating brush 5. Its structure includes a second motor 71, a transmission belt 72, and a cam 73. The second motor 71 is mounted on the connecting part 32 to provide rotational power to the system. Its output end is coaxially connected to the cam 73. The cam 73 is mechanically fixed to the output shaft of the motor and can rotate synchronously with the motor.

[0042] The cleaning roller brush 6 is rotatably mounted between the two connecting parts 32, with its axis parallel to the surface of the light guide plate 2, facilitating full contact with the surface of the light guide plate and completing the rolling cleaning function during movement. The transmission belt 72 is sleeved on the shaft of the cleaning roller brush 6 and connected to the cam 73, forming a synchronous transmission relationship in structure. That is, the rotation of the cam 73 drives the transmission belt 72 to run, thereby realizing the continuous rotation of the cleaning roller brush 6.

[0043] During use, the second motor 71 is started, and its output drives the cam 73 to rotate continuously around its own axis. Because the surface of the cam 73 has irregular protrusions, it periodically contacts or applies a pushing force to the brush plate 51 during rotation. During this contact, the brush plate 51 is connected to the mounting plate 31 via a spring plate 53. The force applied by the cam causes the spring plate 53 to undergo instantaneous elastic deformation, thus pushing the brush plate 51 to move once towards the surface of the light guide plate. As the cam continues to rotate, its protrusions disengage from the brush plate 51, at which point the spring plate 53 returns to its original shape under its own elasticity, and the brush plate 51 returns to its initial position. This cycle repeats, allowing the brush plate 51 to generate continuous reciprocating vibrations on the surface of the light guide plate, causing the bristles 52 to bounce up and down at a high frequency, effectively loosening or removing dust adhering to the surface of the light guide plate 2.

[0044] During the cleaning process, the mounting bracket 3 moves vertically along the light guide plate 2 under the drive of the first drive component 4. The vibrating brush 5 continuously vibrates during this movement, loosening the dust. Subsequently, the cleaning roller brush 6 rotates synchronously under the drive of the second drive component 7, its bristles rolling along the surface of the light guide plate, sweeping the loosened dust to the lower edge of the light guide plate 2, thus achieving the removal and transfer of the cleaned material. This dual-brush collaborative structure organically combines the "vibration-sweeping" process, offering stronger cleaning capabilities and higher dust removal efficiency compared to a single brush contact cleaning method. It is particularly effective in dealing with long-term adhered, fine particulate dust, and does not cause substantial damage to the light guide plate surface. It is suitable for light guide plate systems requiring high-frequency cleaning and stable display performance.

[0045] In this embodiment, to further improve the guiding accuracy and structural stability of the mounting frame 3 during operation, the mounting frame 3 further includes an extension 34 and a slider 35 mounted on the extension 34. The extension 34 is preferably an integrally formed structure or a rigid connector, with one end fixedly connected to the mounting plate 31 and the other end extending outwards from the mounting frame 3, forming a sliding pair with the slider 35. The slider 35 is disposed in the guide rail 12 on the base plate 1 by nesting, engaging, or embedding, forming a sliding connection between the slider 35 and the guide rail 12, allowing it to slide smoothly along the direction set by the guide rail 12.

[0046] The axial direction of the guide rail 12 is parallel to the aforementioned slide groove 11, that is, both extend along the vertical direction of the light guide plate 2, thus aligning with the overall movement path of the mounting frame 3. The arrangement of the guide rail 12 and the slider 35 on the other side of the mounting frame 3 provides a second set of guiding structures. Compared to relying solely on the guide of the slide groove 11 and the connecting part 32, this dual-rail guiding system forms two supporting planes at the front and rear, effectively limiting the tilting, swaying, or offset of the mounting frame 3 during movement. Especially when the high-speed vibration of the vibrating brush 5 and the rotational force of the cleaning roller brush 6 are superimposed during the cleaning process, it can significantly improve the stability and balance of the structure's operation, ensuring that the cleaning head always maintains uniform contact with the light guide plate 2, and avoiding cleaning dead corners or localized damage due to posture deviation.

[0047] In this embodiment, a scraper 36 is also provided on the mounting plate 31. The scraper 36 is fixed to the lower surface of the mounting plate 31 or an adjacent position and extends along the width direction of the light guide plate 2 to form a line contact or surface contact structure tangential to the surface of the light guide plate 2. The scraper 36 can be made of flexible plastic or polymer material, which has a certain elasticity and wear resistance, and will not cause hard scratches to the surface of the light guide plate during the cleaning process.

[0048] The main function of the scraper 36 is to further wipe and push away the fine particles, rolled-up dust, or incompletely removed attachments remaining on the surface of the light guide plate 2 after the initial cleaning by the vibrating brush 5 and the cleaning roller brush 6, thereby achieving the final removal of cleaning residue. Since the scraper 36 and the mounting plate 31 are of the same integrated structure, as the mounting frame 3 moves from top to bottom along the light guide plate 2 under the drive of the first drive component 4, the scraper 36 also slides down the surface of the light guide plate simultaneously. During the sliding process, it pushes the dust and material to the bottom of the light guide plate 2 and removes it from the light guide area, further improving the overall cleaning effect.

[0049] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A light guide plate with powerful cleaning capabilities, characterized in that, include: A substrate (1) and a light guide plate (2) are disposed on the upper surface of the substrate (1). A mounting bracket (3) is slidably mounted on the substrate (1). A first driving component (4) for driving the mounting bracket (3) to move is disposed on the substrate (1). The mounting bracket (3) includes a mounting plate (31). A vibrating brush (5) and a cleaning roller brush (6) are disposed on the lower surface of the mounting plate (31). A second driving component (7) is also disposed on the lower surface of the mounting plate (31). The second driving component (7) is used to drive the vibrating brush (5) to vibrate and the cleaning roller brush (6) to rotate.

2. The light guide plate with strong cleaning capability according to claim 1, characterized in that, The mounting bracket (3) further includes two connecting parts (32) and a driving part (33); the substrate (1) is provided with two sliding grooves (11), the connecting part (32) passes through the sliding groove (11) and is slidably connected to the sliding groove (11), the connecting part (32) is connected to the driving part (33), the first driving assembly (4) is installed on the side of the substrate (1) away from the light guide plate (2), and the first driving assembly (4) is connected to the driving part (33).

3. The light guide plate with strong cleaning capability according to claim 2, characterized in that, The first drive assembly (4) includes a first motor (41) and a lead screw (42). The lead screw (42) is rotatably connected to the base plate (1). The lead screw (42) passes through the drive part (33) and is threadedly connected to the drive part (33). The lead screw (42) is connected to the output end of the first motor (41). The first motor (41) is used to drive the lead screw (42) to rotate.

4. The light guide plate with strong cleaning capability according to claim 2, characterized in that, The vibrating brush (5) includes a brush plate (51), bristles (52) and a spring plate (53); the bristles (52) are disposed on the brush plate (51), the spring plate (53) is connected to the brush plate (51), and the other end of the spring plate (53) is connected to the mounting plate (31). The second drive assembly (7) includes a second motor (71), a transmission belt (72), and a cam (73); the cleaning roller brush (6) is rotatably mounted between the two connecting parts (32), the transmission belt (72) is sleeved on the cleaning roller brush (6), the cam (73) is connected to the transmission belt (72), the second motor (71) is mounted on the connecting part (32), and the output end of the second motor (71) is connected to the cam (73) for driving the cam (73) to rotate.

5. The light guide plate with strong cleaning capability according to claim 2, characterized in that, The mounting bracket (3) further includes an extension (34) and a slider (35) mounted on the extension (34); the extension (34) is connected to the mounting plate (31), and a guide rail (12) is provided on the base plate (1), and the slider (35) is slidably connected to the guide rail (12).

6. The light guide plate with strong cleaning capability according to claim 1, characterized in that, The mounting plate (31) is also provided with a scraper (36).

Images