Backlight lens module with high brightness and uniformity

Abstract

The application belongs to the technical field of lighting equipment and relates to a high-brightness uniform-light backlight lens module. The application comprises a circuit board, elastic sheets and a lens. The circuit board is installed in a shell, and a circular groove for installing a lamp bead is formed in the circuit board. A plurality of elastic sheets are arranged in the circumferential direction of each circular groove, both ends of the elastic sheet are connected with a fixing rod, the length of the elastic sheet is greater than the distance between the two fixing rods, and the elastic sheet is bent and deformed; the fixing rod is fixedly installed on the circuit board; the lens is used for covering the circular groove, a plurality of grooves matched with the elastic sheet are arranged on the lens, and a magnet for bending and deforming the elastic sheet towards the direction close to the lens is installed in the groove. When the lens is installed, the elastic sheet automatically limits the lens. When the lens is disassembled, the elastic sheet automatically releases the limitation on the lens, which is beneficial to improving the installation and maintenance efficiency. Moreover, the lens can be limited or released by only rotating the lens, and the operation difficulty in narrow space or high-altitude operation can be reduced.

Description

Technical Field

[0001] This invention belongs to the field of lighting equipment technology and relates to a high-brightness, uniform-light backlight lens module. Background Technology

[0002] In the field of energy-saving lighting equipment, high-brightness and uniform light backlight lens modules can simultaneously achieve high brightness output and excellent light uniformity, and are mainly used in scenarios requiring large-area, uniform, and bright lighting.

[0003] Currently, most mainstream lens modules use screws or adhesive to install optical lenses, resulting in cumbersome assembly processes and low disassembly and maintenance efficiency. This significantly increases labor and time costs, especially in high-frequency maintenance scenarios, making it difficult to balance the needs for rapid assembly and disassembly with stable clamping. This not only reduces the overall maintenance efficiency of the module, but also makes the rigid fixing method of the lens susceptible to damage from vibration during accidental impacts or transportation.

[0004] To address the aforementioned problems, this invention proposes a high-brightness, uniform-light backlight lens module. Summary of the Invention

[0005] To address the problems existing in the background technology, this invention proposes a high-brightness, uniform-light backlight lens module.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A high-brightness, uniformly illuminated backlight lens module includes a circuit board, elastic sheets, and a lens. The circuit board is installed inside a housing and has circular slots for mounting LED beads. Multiple elastic sheets are arranged circumferentially in each slot, and each elastic sheet has a fixing rod connected to both ends. The length of the elastic sheet is greater than the distance between two corresponding fixing rods, thus causing the elastic sheet to bend and deform. The fixing rods are fixedly mounted on the circuit board. The lens covers the circular slots and has multiple grooves that mate with the elastic sheets. Magnets are installed in the grooves to cause the elastic sheets to bend and deform towards the lens.

[0008] Furthermore, a raised edge is provided between adjacent grooves, which is used to push the elastic sheet to bend and deform outward.

[0009] Furthermore, the groove is arc-shaped.

[0010] Furthermore, the outer casing is fitted with a cover plate, and the cover plate has an adapter hole that matches the lens.

[0011] Furthermore, a fixing post is fixedly installed on the outer shell, and a through hole that mates with the fixing post is opened on the circuit board.

[0012] Furthermore, the cover plate is fixedly connected to a fixing plate, the fixing plate is slidably connected to a slide rod at its upper limit, and the slide rod is fixedly connected to a locking plate; an external protrusion is installed at the end of the fixing post away from the outer shell; and an internal protrusion that cooperates with the locking plate is provided at the end of the locking plate away from the slide rod.

[0013] Furthermore, the cover plate has a through hole, and a threaded sleeve is rotatably installed on the cover plate, with one end of the threaded sleeve located inside the through hole; the slide rod is slidably disposed inside the threaded sleeve, and the slide rod is connected to a limit ball, which is slidably disposed inside the spiral groove of the threaded sleeve.

[0014] Furthermore, a rubber pad is connected to the end of the card plate away from the slide bar.

[0015] Furthermore, the fixed plate has a sliding hole that slides with the slide rod, the inner wall of the sliding hole is fixedly connected with a key, and the slide rod has a keyway that slides with the key.

[0016] Furthermore, a slot is formed on the threaded sleeve.

[0017] Compared with existing technologies, this invention has the following advantages: During lens installation, the elastic sheet bends and deforms towards the lens under the attraction of the magnet, thus squeezing and fixing the lens. Simultaneously, it provides elastic cushioning for the lens, preventing unnecessary damage when the outer casing is accidentally impacted. During disassembly, rotating the lens causes the convex edge on the lens to push the elastic sheet outwards, releasing its limiting effect on the lens. The elastic sheet automatically limits the lens during installation and automatically releases its limiting effect during disassembly, improving installation and maintenance efficiency. Furthermore, since only rotating the lens is needed to limit or release its limiting effect, it reduces the operational difficulty in confined spaces or at heights.

[0018] When installing the cover plate, rotating the threaded sleeve causes the inner protrusion to engage with the outer protrusion. The inner protrusion, through a rubber pad, presses against the circuit board, securing the cover plate to the outer casing and simultaneously fixing the circuit board, thus making the circuit board more stable. This further improves installation and maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 In this invention Figure 1 Enlarged view of part A;

[0021] Figure 3 This is a cross-sectional view of the outer casing in this invention;

[0022] Figure 4 In this invention Figure 3Enlarged view of part B;

[0023] Figure 5 This is a partial cross-sectional view of the present invention;

[0024] Figure 6 In this invention Figure 5 Enlarged view of part C;

[0025] Figure 7 In this invention Figure 5 Enlarged view of part D;

[0026] Figure 8 In this invention Figure 5 Enlarged view of part E;

[0027] Figure 9 This is a schematic diagram of the structure of the fixing plate in this invention;

[0028] Figure 10 This is a schematic diagram of the circuit board structure in this invention;

[0029] Figure 11 This is a schematic diagram of the initial state of the elastic sheet in this invention;

[0030] Figure 12 This is a schematic diagram of the state when the elastic sheet limits the lens in this invention.

[0031] In the diagram: 1. Outer shell; 2. Circuit board; 3. Fixing post; 4. Outer protrusion; 401. First inclined surface; 402. Second inclined surface; 5. Through hole; 6. Circular groove; 7. LED bead; 8. Fixing rod; 9. Elastic sheet; 10. Lens; 11. Groove; 12. Magnet; 13. Cover plate; 14. Adapter hole; 15. Snap ring; 16. Threaded sleeve; 17. Slotted opening; 18. Spiral groove; 19. Limiting ball; 20. Sliding rod; 21. Fixing plate; 22. Sliding hole; 23. Key; 24. Clamping plate; 25. Inner protrusion; 2501. Third inclined surface; 2502. Fourth inclined surface; 26. Rubber pad; 27. Protruding edge. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1-12 As shown, the technical solution adopted by the present invention is as follows: A high-brightness uniform backlight lens module includes a circuit board 2, an elastic sheet 9, a lens 10 and a cover plate 13.

[0034] The circuit board 2 is mounted on the housing 1. In this embodiment, fixing posts 3 are fixedly installed at both ends inside the housing 1. The circuit board 2 has through holes 5 that mate with the fixing posts 3. When the circuit board 2 is installed inside the housing 1, the circuit board 2 is placed inside the housing 1, and the fixing posts 3 extend through the through holes 5 to the top of the circuit board 2, thereby facilitating the positioning of the circuit board 2.

[0035] The circuit board 2 has multiple circular slots 6 for mounting LED beads 7. Multiple elastic pieces 9 are mounted around each circular slot 6. In this embodiment, three elastic pieces 9 are arranged around each circular slot 6. The three elastic pieces 9 are evenly distributed circumferentially along the axis of the corresponding circular slot 6.

[0036] Each elastic sheet 9 has a fixing rod 8 connected to both ends, and the fixing rod 8 is vertically fixed on the circuit board 2. The length of the elastic sheet 9 is greater than the distance between the two fixing rods 8, which causes the elastic sheet 9 to bend and deform into an arc shape.

[0037] Each circular groove 6 is fitted with a lens 10. For example... Figure 3 As shown, the lens 10 has multiple grooves 11 formed along the circumference. The grooves 11 cooperate with the elastic sheet 9. The grooves 11 are arc-shaped. A magnet 12 that attracts the elastic sheet 9 is installed in the groove 11.

[0038] like Figure 11 As shown, initially, the elastic sheet 9 bends and deforms to the side away from the axis of the corresponding circular groove 6, that is, the concave surface of the elastic sheet 9 approaches the axis of the circular groove 6. When the lens 10 is placed on the circular groove 6, the groove 11 and the elastic sheet 9 are at the same height. Rotating the lens 10 so that the elastic sheet 9 is opposite to the groove 11, under the attraction of the magnet 12 in the groove 11, the elastic sheet 9 moves towards the lens 10 and is attracted to the magnet 12. At this time, as shown... Figure 12 As shown, the elastic sheet 9 bends and deforms towards the lens 10, and the convex surface of the elastic sheet 9 is in close contact with the groove 11. At this time, the elastic sheet 9 exerts a squeezing effect on the lens 10. Multiple elastic sheets 9 squeeze the lens 10 towards the center, limiting the lens 10 and fixing it to the circuit board 2. Furthermore, during use, if the outer casing 1 is impacted, the elastic sheet 9, being in an elastically deformed state, can buffer the lens 10 and prevent damage to it.

[0039] A raised edge 27 is provided between two adjacent grooves 11. The grooves 11 and the raised edge 27 are smoothly transitioned. The raised edge 27 is used to push the elastic sheet 9 to bend and deform outward.

[0040] During disassembly, rotate the lens 10 so that the convex edge 27 contacts the elastic sheet 9. The convex edge 27 squeezes the elastic sheet 9 and pushes the elastic sheet 9 outward to deform it, thereby returning the convex edge 27 to its initial state and releasing the elastic sheet 9 from its restriction on the lens 10.

[0041] The cover plate 13 is fitted onto the outer casing 1. The cover plate 13 has multiple adapter holes 14 that match the lenses 10, with each adapter hole 14 corresponding to one lens 10. When the cover plate 13 is placed on the outer casing 1, it protects the circuit board 2 and the lenses 10. The cover plate 13 engages with the lenses 10 through the adapter holes 14, further limiting the position of the lenses 10.

[0042] Both ends of the cover plate 13 have through holes. When the cover plate 13 is placed on the outer casing 1, the through holes are coaxial with the fixing post 3 on the same side. A threaded sleeve 16 is rotatably installed in the through hole. Specifically, a rotating groove is formed on the inner wall of the through hole, and a retaining ring 15 is fixedly connected to the threaded sleeve 16. The retaining ring 15 is rotatably disposed in the rotating groove, and there is a certain rotational damping between the retaining ring 15 and the cover plate 13. A slotted end 17 is formed on the upper end face of the threaded sleeve 16 to facilitate the use of a flathead screwdriver to tighten the threaded sleeve 16. Of course, in other embodiments, a cross-shaped end or other opening can also be formed on the threaded sleeve 16 to facilitate the use of a corresponding screwdriver to tighten the threaded sleeve 16.

[0043] A sliding rod 20 is slidably disposed within the threaded sleeve 16, sliding along the axial direction of the threaded sleeve 16. Specifically, a helical groove 18 is formed within the threaded sleeve 16. The sliding rod 20 is connected to a limiting ball 19, which is slidably disposed within the helical groove 18. A fixing plate 21 is fixedly connected to the cover plate 13, and a sliding hole 22 is formed on the fixing plate 21, coaxially disposed with the threaded sleeve 16. The sliding rod 20 slides through the sliding hole 22. Specifically, a key 23 is fixedly connected to the inner wall of the sliding hole 22, and a keyway is formed along the axial direction on the outer circumference of the sliding rod 20, the keyway slidingly engaging with the key 23. Rotating the threaded sleeve 16 causes the sliding rod 20 to move along the axial direction of the threaded sleeve 16 via the limiting ball 19.

[0044] Multiple locking plates 24 are fixedly connected to the lower end of the slide rod 20. The multiple locking plates 24 are evenly distributed around the axis of the slide rod 20. The locking plates 24 are elastic.

[0045] An inner protrusion 25 is fixedly installed at the lower end of the clamping plate 24. An outer protrusion 4 that mates with the inner protrusion 25 is installed at the upper end of the fixing post 3. A first inclined surface 401 is provided at the lower end of the outer protrusion 4, and a second inclined surface 402 is provided at the upper end of the outer protrusion 4. A third inclined surface 2501 is provided at the upper end of the inner protrusion 25, and a fourth inclined surface 2502 is provided on one side of the inner protrusion 25.

[0046] The slide bar 20 moves downwards and gradually approaches the outer protrusion 4. The fourth inclined surface 2502 on the inner protrusion 25 contacts the second inclined surface 402. Under the pressure of the second inclined surface 402, the clamping plate 24 expands outwards, allowing it to continue moving downwards. When the inner protrusion 25 reaches the lower end of the outer protrusion 4, the clamping plate 24 resets, causing the inner protrusion 25 to lock into the lower end of the outer protrusion 4, and the third inclined surface 2501 contacts the first inclined surface 401. This fixes the cover plate 13 to the outer casing 1. A rubber pad 26 is fixedly connected to the lower end of the inner protrusion 25. The lower end of the inner protrusion 25 abuts against the circuit board 2 through the rubber pad 26, further securing the circuit board 2.

[0047] When it is necessary to remove the cover plate 13 from the outer casing 1, rotate the threaded sleeve 16 to move the slide rod 20 and the retaining plate 24 upwards. The retaining plate 24 opens outwards until the inner protrusion 25 moves upwards past the outer protrusion 4, and the retaining plate 24 returns to its original position. At this time, the inner protrusion 25 disengages from the outer protrusion 4, and the cover plate 13 can be removed.

[0048] Working principle: Initially, such as Figure 9 , Figure 10 As shown, the elastic sheet 9 bends outward and deforms, that is, the concave surface of the elastic sheet 9 approaches the circular groove 6.

[0049] In use, the circuit board 2 is placed on the outer casing 1, and the through hole 5 is fitted onto the corresponding fixing post 3 to position the circuit board 2.

[0050] Next, install the LED bead 7 in the circular groove 6. After the LED bead 7 is installed, place the lens 10 over it. Then, rotate the lens 10 so that the elastic sheet 9 is aligned with the groove 11. Under the attraction of the magnet 12 within the groove 11, the elastic sheet 9 bends and deforms towards the lens 10, causing it to adhere to the magnet 12. At this time, as... Figure 12 As shown, the convex surface of the elastic sheet 9 is close to the lens 10 and tightly abuts against the groove 11, and the elastic sheet 9 exerts a squeezing effect on the lens 10. Multiple elastic sheets 9 squeeze the lens 10 towards the center, limiting the lens 10 and fixing it to the circuit board 2. Furthermore, during use, if the outer casing 1 is impacted, the elastic sheets 9, being in an elastic deformation state, can buffer the lens 10, preventing damage to it.

[0051] Similarly, LED beads 7 are installed in multiple circular slots 6, and lenses 10 are placed over the LED beads 7. The lenses 10 are then fixed to the circuit board 2 by corresponding elastic sheets 9.

[0052] Subsequently, the cover plate 13 is placed on the outer casing 1, and the adapter hole 14 engages with the corresponding lens 10, further limiting the lens 10 and making it more secure. At this time, the threaded sleeve 16 is coaxial with the fixing post 3 on the same side. Then, the threaded sleeve 16 is turned with a screwdriver, causing the slide rod 20 to gradually approach the circuit board 2 along the axial direction of the threaded sleeve 16, and the retaining plate 24 to gradually approach the outer protrusion 4. When the fourth inclined surface 2502 contacts the second inclined surface 402, under the action of the outer protrusion 4, the retaining plate 24 opens outward, allowing the retaining plate 24 to continue to move downward until the inner protrusion 25 moves below the outer protrusion 4. The inner protrusion 25 then recovers its elastic deformation, and the third inclined surface 2501 contacts the first inclined surface 401. At this time, the inner protrusion 25 abuts against the circuit board 2 through the rubber pad 26, fixing the cover plate 13 to the outer casing 1. Because the rubber pad 26 presses against the circuit board 2, the circuit board 2 is fixed to the outer casing 1, improving the stability of the circuit board 2.

[0053] When the LED chip 7 is damaged and needs replacement or maintenance, the threaded sleeve 16 is turned with a screwdriver. The slide rod 20 moves the retaining plate 24 upward. Under the action of the first inclined surface 401, the retaining plate 24 opens outward, allowing the inner protrusion 25 to smoothly pass over the outer protrusion 4 and move above it, thereby releasing the restriction on the retaining plate 24. This causes the inner protrusions 25 at both ends of the cover plate 13 to disengage from the corresponding outer protrusions 4, after which the cover plate 13 can be removed. Then, the lens 10 on the LED chip 7 to be maintained is rotated. The protruding edge 27 on the lens 10 pushes the elastic piece 9, causing the elastic piece 9 to move outward and bend outward. The elastic piece 9 disengages from the groove 11 and moves away from the lens 10, thereby releasing the restriction on the lens 10. After that, the lens 10 can be removed for easy maintenance or replacement of the LED chip 7. Since rotating the lens 10 can limit or release the restriction on the lens 10, it not only improves installation and maintenance efficiency but also facilitates operation in confined spaces or at heights.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-brightness, uniformly illuminated backlight lens module, characterized in that: The device includes a circuit board (2), elastic sheets (9), and a lens (10). The circuit board (2) is installed inside the housing (1). The circuit board (2) has a circular groove (6) for installing LED beads (7). Each circular groove (6) has multiple elastic sheets (9) arranged in the circumferential direction. Both ends of the elastic sheet (9) are connected to a fixing rod (8). The length of the elastic sheet (9) is greater than the distance between the corresponding two fixing rods (8), thereby causing the elastic sheet (9) to bend and deform. The fixing rod (8) is fixedly installed on the circuit board (2). The lens (10) is used to cover the circular groove (6). The lens (10) has multiple grooves (11) that cooperate with the elastic sheet (9). A magnet (12) is installed in the groove (11) to bend and deform the elastic sheet (9) towards the lens (10).

2. The high-brightness, uniform light backlight lens module according to claim 1, characterized in that: A raised edge (27) is provided between adjacent grooves (11), and the raised edge (27) is used to push the elastic sheet (9) to bend and deform outward.

3. The high-brightness, uniform-light backlight lens module according to claim 1, characterized in that: The groove (11) is arc-shaped.

4. A high-brightness, uniform-light backlight lens module according to claim 1, characterized in that: The outer shell (1) is fitted with a cover plate (13), and the cover plate (13) has an adapter hole (14) that matches the lens (10).

5. A high-brightness, uniform-light backlight lens module according to claim 4, characterized in that: A fixing post (3) is fixedly installed on the outer shell (1), and a through hole (5) that cooperates with the fixing post (3) is opened on the circuit board (2).

6. A high-brightness, uniform-light backlight lens module according to claim 5, characterized in that: The cover plate (13) is fixedly connected to a fixing plate (21), the fixing plate (21) is slidably connected to a slide rod (20), and the slide rod (20) is fixedly connected to a clamping plate (24); the end of the fixing post (3) away from the outer shell (1) is equipped with an outer protrusion (4); the end of the clamping plate (24) away from the slide rod (20) is provided with an inner protrusion (25) that cooperates with the outer protrusion (4).

7. A high-brightness, uniform-light backlight lens module according to claim 6, characterized in that: The cover plate (13) has a through hole, and a threaded sleeve (16) is rotatably installed on the cover plate (13). One end of the threaded sleeve (16) is located in the through hole. The slide rod (20) is slidably disposed in the threaded sleeve (16), and the slide rod (20) is connected to a limiting ball (19). The limiting ball (19) is slidably disposed in the spiral groove (18) of the threaded sleeve (16).

8. A high-brightness, uniform-light backlight lens module according to claim 6, characterized in that: A rubber pad (26) is connected to the end of the card plate (24) away from the slide bar (20).

9. A high-brightness, uniform-light backlight lens module according to claim 6, characterized in that: The fixed plate (21) has a sliding hole (22) that slides with the slide rod (20). A key (23) is fixedly connected to the inner wall of the sliding hole (22). The slide rod (20) has a keyway that slides with the key (23).

10. A high-brightness, uniform-light backlight lens module according to claim 7, characterized in that: A slot (17) is provided on the threaded sleeve (16).

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