Backlight lens and backlight module

Abstract

This utility model discloses a backlight lens and a backlight module. The backlight lens includes a lens portion, a base, and several feet. The lens portion is mounted on the top surface of the base, and the several feet are mounted on the bottom surface of the base. Each foot includes a metal bracket and a metal chassis. The metal chassis is fixed to the bottom surface of the chassis, and the metal bracket is fixed to the metal chassis. The lens portion is made of silicone. The backlight lens provided by this utility model uses metal feet, which can achieve good soldering with the pads on the LED light board, improving conductivity and thermal conductivity. At the same time, the lens portion is made of silicone, which has excellent heat resistance, meets application requirements, reduces manufacturing difficulty, and ensures the smoothness and light transmittance of the lens surface, improving the production efficiency and reliability of the lens product.

Description

Technical Field

[0001] This utility model relates to the field of backlight module technology, and in particular to a backlight lens and a backlight module. Background Technology

[0002] Surface mount technology (SMT) has been widely used in the electronics manufacturing industry due to its advantages such as improved production efficiency, reduced product size, and lower costs. However, there are certain problems in combining traditional backlight lenses with SMT processes in the manufacturing and application of backlight lenses.

[0003] Currently, most backlight modules on the market use adhesive bonding to fix the backlight lens to the LED light board. This manufacturing process is relatively cumbersome, and the adhesive-bonded backlight lens is prone to loosening and detachment during use, affecting the functionality of the backlight module. Furthermore, traditional backlight lenses are made of polymethyl methacrylate (PMMA), which is prone to aging and yellowing over long-term use, leading to a decrease in light transmittance and luminous efficiency. Additionally, PMMA material has poor temperature resistance, failing to meet the temperature requirements of the reflow soldering step in SMT processes, resulting in deformation and damage under high-temperature manufacturing environments, impacting the production efficiency and reliability of the lens products. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a backlight lens and a backlight module. The base is made of metal material, which can achieve a good welding effect with the pads on the LED light board, improves conductivity and thermal conductivity. At the same time, the lens part is made of silicone material, which has excellent heat resistance, meets application requirements, reduces manufacturing difficulty, and can ensure the smoothness and light transmittance of the lens surface, thereby improving the production efficiency and reliability of lens products.

[0005] This utility model provides a backlight lens, which includes a lens part, a base and a plurality of feet. The lens part is mounted on the top surface of the base and the plurality of feet are mounted on the bottom surface of the base.

[0006] The base includes a metal bracket and a metal chassis, the metal chassis is fixed to the bottom surface of the chassis, and the metal bracket is fixed to the metal chassis;

[0007] The lens part is made of silicone.

[0008] Furthermore, the metal bracket is a hollow frustum structure, with perforations on both the top and bottom surfaces.

[0009] Furthermore, the wire diameter of the metal bracket gradually increases from top to bottom.

[0010] Furthermore, the base also includes a metal reinforcing rib, one end of which is connected to the outer side of the metal bracket, and the other end of which is connected to the metal chassis.

[0011] Furthermore, the base also includes a silicone shell, the bottom of which is fixed to the metal chassis and covers the metal support and metal reinforcing ribs.

[0012] Furthermore, the bottom diameter of the silicone shell is less than or equal to the top diameter of the metal chassis.

[0013] Furthermore, the top of the silicone shell is a curved rubber tip.

[0014] Furthermore, the lens, base, and feet are integrally formed.

[0015] Furthermore, the base is provided with through holes.

[0016] This utility model also provides a backlight module, which includes an LED light panel and the aforementioned backlight lens;

[0017] Several feet in the backlight lens are soldered onto the LED light board.

[0018] This utility model provides a backlight lens and a backlight module. The backlight lens uses a metal base, which can be combined with SMT process to perform metal welding with the pads on the LED light board, achieving a good welding effect. Compared with the adhesive process, it improves the stability of the backlight lens on the LED light board and reduces the problems of loosening and falling off. In addition, the lens part is made of silicone, which has excellent heat resistance, meets the temperature requirements of the reflow soldering step in the SMT process, reduces the process difficulty, and silicone has excellent anti-aging properties, which can ensure the light transmittance and light efficiency of the lens surface during long-term use, improving the production efficiency and reliability of lens products. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top view schematic diagram of the backlight lens structure in Embodiment 1 of this utility model;

[0021] Figure 2 This is a bottom view schematic diagram of the backlight lens structure in Embodiment 2 of this utility model;

[0022] Figure 3 This is a first schematic diagram of the base structure in Embodiment 1 of this utility model;

[0023] Figure 4 This is a second schematic diagram of the base structure in Embodiment 1 of this utility model;

[0024] Figure 5 This is a first schematic diagram of the backlight module structure in Embodiment 2 of this utility model;

[0025] Figure 6 This is a second schematic diagram of the backlight module structure in Embodiment 2 of this utility model. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In this invention, it should be understood that terms such as “comprising” or “having” are intended to indicate the presence of features, figures, steps, actions, components, portions or combinations thereof disclosed in this specification, and are not intended to exclude the possibility of the presence or addition of one or more other features, figures, steps, actions, components, portions or combinations thereof.

[0028] It should also be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] Embodiment 1 of this utility model provides a backlight lens, which includes a lens part, a base and a plurality of feet. The lens part is mounted on the top surface of the base and the plurality of feet are mounted on the bottom surface of the base.

[0031] The base includes a metal bracket and a metal chassis, the metal chassis is fixed to the bottom surface of the chassis, and the metal bracket is fixed to the metal chassis;

[0032] The lens part is made of silicone.

[0033] In one optional implementation of this embodiment, such as Figure 1 and Figure 2 As shown, Figure 1This diagram shows a top view of the backlight lens structure in Embodiment 1 of the present invention. Figure 2 The diagram shows a bottom view of the backlight lens structure in Embodiment 2 of this utility model. The backlight lens includes a lens part 1, a base 2, and a foot 3. The lens part 1 is mounted on the top surface of the base 2, and the foot 3 is mounted on the bottom surface of the base 2.

[0034] In one optional implementation of this embodiment, the number of base feet 3 is 3-10, and in this embodiment, three base feet 3 are provided.

[0035] Furthermore, the base feet 3 are evenly distributed on the circumferential edge of the bottom surface of the base 2.

[0036] The feet are evenly distributed along the edge of the base to ensure uniform force distribution and improve stability.

[0037] In one optional implementation of this embodiment, such as Figure 3 As shown, Figure 3 The diagram shows a first schematic diagram of the base structure in Embodiment 1 of the present invention. The base 3 includes a metal bracket 31 and a metal chassis 32. The metal chassis 32 is fixed to the bottom surface of the base 2, and the metal bracket 31 is fixed to the metal chassis 32.

[0038] Specifically, the metal support 31 is a hollow frustum structure. A through hole 311 is provided inside the metal support 31, which penetrates the metal support 31. One end of the through hole 311 extends to the top surface of the metal support 31, and the other end extends to the bottom surface of the metal support 31. The through hole 311 and the hollow structure of the metal support 31 are used to provide an injection port for liquid silicone when embedding silicone to form a silicone shell. At the same time, the hollow frustum structure of the metal support 31 can reduce the overall weight of the metal support 31 and increase the stability of the metal support 31 structure.

[0039] Furthermore, the wire diameter of the metal bracket 31 gradually increases from top to bottom.

[0040] Specifically, the metal bracket 31 is configured as a frustum structure that is narrow at the top and wide at the bottom, with a larger bottom surface area and better stability.

[0041] In one optional implementation of this embodiment, such as Figure 3 As shown, the base 3 also includes a metal reinforcing rib 33, one end of which is connected to the outer side of the metal bracket 31, and the other end of which is connected to the metal chassis 32.

[0042] Furthermore, the number of metal reinforcing ribs 33 is 2-10. In this embodiment, 2 metal reinforcing ribs 33 are provided, and these 2 metal reinforcing ribs 33 are symmetrically distributed based on the axis of the metal bracket 31. When the number of metal reinforcing ribs 33 is set to 3 or more, their distribution pattern is that they are evenly distributed along the outer surface of the metal bracket 31.

[0043] Metal reinforcing ribs are installed here to further improve the structural rigidity and stability of the metal support.

[0044] In one optional implementation of this embodiment, the metal bracket 31, the metal chassis 32, and the metal reinforcing rib 33 are an integral structure, manufactured using an integrated molding process. Specifically, a metal sheet (preferably a copper sheet) is stamped into a frustum-shaped metal bracket and a circular metal chassis, the middle of the metal bracket is hollowed out, and a metal reinforcing rib is formed, followed by electroplating.

[0045] Currently, most backlight modules on the market use adhesive bonding to fix the backlight lens to the LED light board. This manufacturing process is relatively cumbersome, and the adhesive-fixed backlight lens is prone to loosening and falling off during use, affecting the use of the backlight module. Therefore, this embodiment uses metal feet, which can be combined with SMT process to weld metal to the pads on the LED light board, achieving a good welding effect. Compared with adhesive bonding, this improves the stability of the backlight lens on the LED light board and reduces the problem of loosening and falling off.

[0046] In one optional implementation of this embodiment, such as Figure 4 As shown, Figure 4 The diagram shows a second schematic of the base structure in Embodiment 1 of the present invention. The base 3 further includes a silicone shell 34. The bottom of the silicone shell 34 is fixed on the metal chassis 32 and covers the metal bracket 31 and the metal reinforcing rib 33.

[0047] It should be noted that, since the silicone shell 34 covers the metal bracket 31 and the metal reinforcing rib 33, that is, in Figure 4 The metal bracket 31 and metal reinforcing rib 33 are hidden in the middle.

[0048] In an optional implementation of this embodiment, the bottom diameter of the silicone shell 34 is less than or equal to the top diameter of the metal chassis 32.

[0049] Specifically, the silicone shell 34 is fixed on the metal chassis 32, covering the metal bracket 31 and the metal reinforcing rib 33. Therefore, the bottom diameter of the silicone shell 34 must be less than or equal to the top diameter of the metal chassis 32, and the metal chassis 32 provides support for the silicone shell 34.

[0050] In an optional implementation of this embodiment, the top of the silicone housing 34 is a curved adhesive head 341.

[0051] Specifically, the curved rubber head 341 can reduce the damage to the base 3 caused by the backlight lens when subjected to vibration or impact.

[0052] In an optional implementation of this embodiment, the manufacturing process of the silicone shell 34 includes: embedding the integral structure of the formed metal bracket 31, metal chassis 32, and metal reinforcing rib 33 into a matching silicone mold, and forming the silicone shell 34 by injection molding, thereby protecting the metal structures such as the metal bracket 31, metal chassis 32, and metal reinforcing rib 33.

[0053] In an optional implementation of this embodiment, the lens portion 1 is made of silicone.

[0054] Specifically, considering that traditional backlight lenses use PMMA material, which is prone to aging and yellowing over long-term use, leading to a decrease in light transmittance and luminous efficiency, and because PMMA material has poor temperature resistance, it cannot meet the temperature requirements of the reflow soldering step in the SMT process, resulting in deformation and damage in high-temperature manufacturing environments, affecting the production efficiency and reliability of lens products. Therefore, in this embodiment, silicone is used as the material for the lens part. It has excellent heat resistance, meets the temperature requirements of the reflow soldering step in the SMT process, reduces the process difficulty, and silicone has excellent anti-aging properties, which can ensure the light transmittance and luminous efficiency of the lens surface during long-term use, improving the production efficiency and reliability of lens products.

[0055] In one optional implementation of this embodiment, the lens part 1 is a convex lens, a concave lens, a plane mirror, or an irregularly shaped lens.

[0056] Specifically, the shape of the lens section is selected according to the actual design requirements. In this embodiment, the lens section 1 adopts a convex lens structure.

[0057] In one optional implementation of this embodiment, the lens, base, and foot are integrally formed.

[0058] Specifically, the metal bracket 31, metal base 32, metal reinforcing rib 33, and silicone shell 34 in the lens part 1, base 2, and foot 3 are integrally molded using an integrated molding process. This not only improves the mechanical strength of the backlight lens but also reduces the optical performance degradation caused by loose component connections. Furthermore, the overall structural design of the backlight lens fully considers the requirements of SMT processes; its size and shape are compatible with existing SMT placement machines and reflow soldering equipment, facilitating automated production.

[0059] In an optional implementation of this embodiment, the base 2 is provided with a through hole 21.

[0060] Specifically, the through hole 21 is used to provide a light emission channel for the light-emitting chip on the LED light board when the backlight lens is soldered onto the LED light board.

[0061] In summary, Embodiment 1 of this utility model provides a backlight lens with a metal base, which can be combined with SMT process to perform metal welding with the pads on the LED light board, achieving a good welding effect. Compared with the adhesive process, this improves the stability of the backlight lens on the LED light board and reduces the problems of loosening and falling off. Moreover, the lens part is made of silicone, which has excellent heat resistance, meets the temperature requirements of the reflow soldering step in the SMT process, reduces the process difficulty, and silicone has excellent anti-aging properties, which can ensure the light transmittance and light efficiency of the lens surface during long-term use, improving the production efficiency and reliability of the lens product. Metal reinforcing ribs are set to further improve the structural rigidity and stability of the metal bracket. A silicone shell is set to provide effective protection for the metal structure of the base.

[0062] Example 2

[0063] Embodiment 2 of this utility model provides a backlight module, which includes an LED light board and the aforementioned backlight lens;

[0064] Several feet in the backlight lens are soldered onto the LED light board.

[0065] In one optional implementation of this embodiment, such as Figure 5 and Figure 6 As shown, Figure 5 This shows a first schematic diagram of the backlight module structure in Embodiment 2 of the present invention. Figure 6 This shows a second schematic diagram of the backlight module structure in Embodiment 2 of the present invention. Figure 6 A backlight lens is provided on the backlight module. The backlight module includes an LED light board 4 and a backlight lens 5. The LED light board 4 is provided with pads 41. The number and position of the pads 41 correspond to the number and position of the pins of the backlight lens 5. The pins of the backlight lens 5 are soldered to the corresponding pads 41 using SMT process. In this embodiment, the backlight lens in embodiment one is used, with 3 pins arranged in a triangular position. The number and position of the pads 41 correspond to the pins.

[0066] In summary, Embodiment 2 of this utility model provides a backlight module, including the backlight lens of Embodiment 1. It uses a metal base, which can be combined with SMT (Surface Mount Technology) processes for metal welding to pads on the LED board, achieving good welding results. Compared to adhesive bonding, this improves the stability of the backlight lens on the LED board, reducing the problem of loosening and detachment. Furthermore, the lens part is made of silicone, which has excellent heat resistance, meeting the temperature requirements of the reflow soldering step in the SMT process, reducing process difficulty. Silicone also has excellent anti-aging properties, ensuring the light transmittance and luminous efficiency of the lens surface during long-term use, improving the production efficiency and reliability of the lens product. Metal reinforcing ribs are provided to further improve the structural rigidity and stability of the metal bracket. A silicone shell provides effective protection for the metal structure of the base.

[0067] The foregoing has provided a detailed description of a backlight lens and backlight module provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A backlit lens characterized by, The backlight lens includes a lens part, a base, and a plurality of feet. The lens part is mounted on the top surface of the base, and the plurality of feet are mounted on the bottom surface of the base. The base includes a metal bracket and a metal chassis, the metal chassis being fixed to the bottom surface of the base, and the metal bracket being fixed to the metal chassis; The lens part is made of silicone.

2. The backlit lens of claim 1, wherein, The metal bracket is a hollow frustum structure, with perforations on both the top and bottom surfaces.

3. The backlit lens of claim 1, wherein, The wire diameter of the metal bracket gradually increases from top to bottom.

4. The backlit lens of claim 1, wherein, The base also includes a metal reinforcing rib, one end of which is connected to the outer side of the metal bracket, and the other end of which is connected to the metal chassis.

5. The backlit lens of claim 4, wherein, The base also includes a silicone shell, the bottom of which is fixed to the metal chassis and covers the metal support and metal reinforcing ribs.

6. The backlit lens of claim 5, wherein, The bottom diameter of the silicone shell is less than or equal to the top diameter of the metal chassis.

7. The backlit lens of claim 5, wherein, The top of the silicone shell is a curved rubber head.

8. The backlit lens of claim 5, wherein, The lens, base, and feet are integrally formed.

9. The backlit lens of claim 1, wherein, The base has through holes.

10. A backlight module, characterized in that, The backlight module includes an LED light panel and a backlight lens as described in any one of claims 1-9; Several feet in the backlight lens are soldered onto the LED light board.

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