Light-emitting assembly and backlight module

Abstract

The utility model relates to a kind of light-emitting assembly and backlight module, the light-emitting assembly includes: lamp panel, it is equipped with light source and first connecting structure;Lens, to cover the light source;The lens includes light-entering side surface and light-exit side surface, the light-entering side surface is equipped with second connecting structure and multiple support blocks;All the support blocks are spaced apart distribution, to form heat dissipation channel on the light-entering side surface;Wherein, the support block is equipped with multiple microstructure, the support block is through the microstructure and the lamp panel abuts;The first connecting structure is connected with the second connecting structure, to install the lens on the lamp panel.The utility model's light-emitting assembly, the structure of lens and lamp panel is optimized, can accelerate heat dissipation, can improve the stability of lens and lamp panel both connection, improve the light efficiency of lens.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a light-emitting component and a backlight module. Background Technology

[0002] With the development of display technology, people's requirements for optical quality are gradually increasing. Backlight modules use lenses to improve the utilization rate of light sources and the control of light. In the SMT (Surface Mount Technology) process, the lenses are fixed to the lamp board by dispensing adhesive. During the operation of the backlight module, the lenses are prone to detachment or displacement due to uneven heating if heat dissipation is not timely. This causes the light emitted by the LEDs through the lenses to disperse, affecting the uniformity of the backlight module. Utility Model Content

[0003] Based on the aforementioned deficiencies in the existing technology, the purpose of this utility model is to provide a light-emitting component that optimizes the structure of the lens and the lamp panel. A second connecting structure, a support block, and a heat dissipation channel are provided on the light-incident side surface, and a microstructure is provided on the support block. The second connecting structure is used to connect with the first connecting structure of the lamp panel. The support block abuts against the lamp panel through the microstructure, which can accelerate heat dissipation, improve the stability of the connection between the lens and the lamp panel, and improve the luminous efficiency of the lens.

[0004] Therefore, the present invention provides the following technical solution.

[0005] This utility model provides a light-emitting component, the light-emitting component comprising:

[0006] The light panel is equipped with a light source and a first connecting structure;

[0007] A lens for covering the light source; the lens includes an incident light-side surface and an exit light-side surface, the incident light-side surface is provided with a second connecting structure and a plurality of support blocks; all the support blocks are spaced apart to form a heat dissipation channel on the incident light-side surface;

[0008] The support block is provided with multiple microstructures, and the support block abuts against the lamp plate through the microstructures; the first connecting structure is connected to the second connecting structure to mount the lens on the lamp plate.

[0009] Optionally, all of the microstructures are uniformly distributed on the surface of the support block.

[0010] Optionally, the microstructure is a protruding structure.

[0011] Optionally, the cross-section of the microstructure is hexagonal.

[0012] Optionally, the light-incident side surface is provided with a light-incident cavity, and the light source emits light toward the light-incident cavity;

[0013] All of the support blocks are arranged in at least one annular array, and the incident light cavity is located at the center of the annular array.

[0014] Optionally, the cross-section of the support block is fan-shaped, and multiple heat dissipation channels are formed on the light-incident side surface;

[0015] At least some of the heat dissipation channels are arranged radially around the light inlet cavity.

[0016] Optionally, one of the first connecting structure and the second connecting structure is a slot, and the other is a snap-fit ​​protrusion; the first connecting structure and the second connecting structure snap-fit ​​together.

[0017] Optionally, the first connecting structure is bonded to the second connecting structure.

[0018] Optionally, a light-incident cavity is provided at the center of the light-incident side surface, and the light source emits light towards the light-incident cavity;

[0019] The number of the first connection structure and the number of the second connection structure are both at least two, and they are arranged in a one-to-one correspondence; all the second connection structures are evenly spaced apart around the circumference of the light-incident cavity.

[0020] This utility model also provides a backlight module, which includes the light-emitting components described above.

[0021] This utility model has the following technical effects:

[0022] This utility model provides a light-emitting component that optimizes the structure on the light-incident side surface of the lens. The arrangement of multiple support blocks serves two purposes: firstly, the support blocks can abut against the lamp board to support the lens; secondly, the support blocks can also form a heat dissipation channel on the light-incident side surface, which helps to accelerate the heat dissipation of the light source and avoid the problem of the lens falling off due to local overheating, thereby improving the stability of the connection between the lens and the lamp board.

[0023] In addition, multiple microstructures are set on the support block, and the support block abuts against the lamp panel through the microstructures. On the one hand, the microstructures can increase the friction between the support block and the lamp panel, making it more difficult for the lens to move relative to the lamp panel and preventing the lens from deviating from the light source. On the other hand, the microstructures can also perform a frosting treatment on the light-incident side surface, which can play the role of uniform light and prevent light leakage, thereby improving the light efficiency of the lens.

[0024] In addition, the structure of the lamp panel has been improved. The lamp panel and the lens are connected by a first connection structure and a second connection structure to achieve installation. Compared with the existing technology that only uses adhesive bonding for installation, this solution can improve the stability of the connection between the lens and the lamp panel. When the light-emitting component is subjected to external force, the lens is less likely to shift relative to the lamp panel, ensuring stable visual effect. Attached Figure Description

[0025] Figure 1 This is an exploded view of the structure of the light-emitting component of this utility model;

[0026] Figure 2 This is a bottom view of the lens of this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a three-dimensional structural diagram of the lamp panel of this utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the light-emitting component of this utility model;

[0030] Figure 6 This is a cross-sectional view of the light-emitting component of this utility model.

[0031] Explanation of reference numerals in the attached figures

[0032] 100. Light-emitting components;

[0033] 1. Lamp panel; 11. First connecting structure;

[0034] 2. Lens; 21. Light-incident side surface; 211. Second connecting structure; 2111. Guide slope; 212. Support block; 2121. Microstructure; 213. Heat dissipation channel; 2131. First heat dissipation channel; 2132. Second heat dissipation channel; 214. Light-incident cavity; 22. Light-out side surface. Detailed Implementation

[0035] To make the technical solution and beneficial effects of this utility model more apparent and understandable, a detailed description is provided below by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0036] In the description of this utility model, unless otherwise expressly defined, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limitations on this utility model.

[0037] In this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two; "several" means at least one; unless otherwise expressly defined.

[0038] In this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this utility model, unless otherwise explicitly defined, the terms "above," "on top of," "above," "over," "below," "below," "below," or "below" for "first feature above second feature" can refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Furthermore, "above," "above," and "over" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0040] The following is based on Figures 1 to 6 This invention provides a detailed description of the light-emitting component.

[0041] In this embodiment, such as Figures 1 to 6As shown, the light-emitting component 100 includes a lamp board 1 and a lens 2. The lamp board 1 is provided with a light source (not shown) and a first connection structure 11. The board body of the lamp board 1 is a PCB board. The structure of the light source includes, but is not limited to, lamp beads and lamp strips. The light source is usually an LED, which has the advantages of energy saving, long service life, simplicity, compactness, and durability. The lens 2 is used to cover the light source and to change the propagation path of the light emitted from the light source. The lens 2 includes an incident light-side surface 21 and an exit light-side surface 22. The light emitted from the light source enters the lens 2 from the incident light-side surface 21, is refracted by the lens 2, and then exits from the exit light-side surface 22.

[0042] The light-incident surface 21 is provided with a second connecting structure 211 and a plurality of support blocks 212. The number of support blocks 212 can be two, three, four, or even more. All the support blocks 212 are spaced apart to form a heat dissipation channel 213 on the light-incident surface 21. That is, the space between two adjacent support blocks 212 can be used for heat dissipation, and the heat generated by the light source during operation can be discharged to the outside through the heat dissipation channel 213. The support block 212 is provided with a plurality of microstructures 2121, and the support block 212 abuts against the lamp plate 1 through the microstructures 2121, wherein the microstructures 2121 represent surface structures at the nanometer or micrometer level. The first connecting structure 11 is connected to the second connecting structure 211 to mount the lens 2 on the lamp plate 1.

[0043] The above technical solution optimizes the structure on the light-incident surface 21 of the lens 2. The arrangement of multiple support blocks 212 serves two purposes: firstly, the support blocks 212 can abut against the lamp board 1 to support the lens 2; secondly, the support blocks 212 can also form a heat dissipation channel 213 on the light-incident surface 21, which helps to accelerate the heat dissipation of the light source, avoids the lens 2 from falling off due to local overheating, and helps to improve the stability of the connection between the lens 2 and the lamp board 1.

[0044] In addition, multiple microstructures 2121 are provided on the support block 212. The support block 212 abuts against the lamp plate 1 through the microstructures 2121. On the one hand, the microstructures 2121 can increase the friction between the support block 212 and the lamp plate 1, making it more difficult for the lens 2 to move relative to the lamp plate 1, thereby preventing the lens 2 from deviating from the light source. On the other hand, the microstructures 2121 can also atomize the light-incident surface 21, which can play the role of uniform light and prevent light leakage, thereby improving the light efficiency of the lens 2.

[0045] In addition, the structure of the lamp panel 1 has also been improved. The lamp panel 1 and the lens 2 are connected by the first connecting structure 11 and the second connecting structure 211 to achieve installation. Compared with the existing technology that only uses adhesive bonding for installation, this solution can improve the stability of the connection between the lens 2 and the lamp panel 1. When the light-emitting component 100 is subjected to external force, the lens 2 is not easy to shift relative to the lamp panel 1, thus ensuring stable visual effect.

[0046] In one implementation, such as Figure 1 and Figure 2 As shown, all microstructures 2121 are uniformly distributed on the surface of the support block 212, which can improve the light uniformity of the microstructures 2121. Specifically, the arrangement of the microstructures 2121 is determined according to the shape of the support block 212. For example, if the cross-section of the support block 212 is fan-shaped, all microstructures 2121 are arranged in an array along the fan-shaped surface of the support block 212. If the support block 212 is circular, all microstructures 2121 are arranged in multiple concentric ring arrays.

[0047] In one implementation, such as Figure 1 As shown, the microstructure 2121 is a raised structure, which is easy to process. The microstructure 2121 uses the diffraction effect of light to disperse the light, thereby atomizing the light-incident surface 21, which can play the role of uniform light and preventing light leakage.

[0048] Furthermore, such as Figure 3 As shown, the cross-section of the microstructure 2121 is hexagonal. The hexagonal microstructure 2121 possesses 120° rotational symmetry, ensuring consistent optical response from any side of the microstructure 2121 when light is incident on it. This results in good atomization and uniform light distribution on the light-incident surface 21. Furthermore, the hexagonal microstructure 2121 exhibits superior structural mechanical properties, enabling more uniform and low-dispersion stress. This allows for better shape fidelity and stability during the fabrication process and during contact between the microstructure 2121 and the lamp panel 1. Of course, the cross-section of the microstructure 2121 can also be other shapes, including but not limited to circles and other polygons.

[0049] In one implementation, such as Figure 1 , Figure 2 and Figure 6As shown, the light-incident surface 21 is provided with a light-incident cavity 214. The light source on the lamp panel 1 emits light towards the light-incident cavity 214. The light-incident cavity 214 is a concave cavity structure, and the light source is at least partially housed within it. The light-incident cavity 214 is hemispherical to reduce refraction loss and provide a smooth transition for large-angle light. Of course, the light-incident cavity 214 can also be other shapes, such as conical. In this design, the light-incident cavity 214 serves two purposes: firstly, it can conceal the light source, improving aesthetics and providing anti-glare; secondly, it can capture and utilize the light emitted by the light source to the maximum extent, improving luminous efficiency. Furthermore, all the support blocks 212 are arranged in at least one annular array, with the light-incident cavity 214 located at the center of the annular array to ensure uniform heat dissipation and prevent localized overheating of the light-incident surface 21.

[0050] Furthermore, such as Figure 1 and Figure 2 As shown, the cross-section of the support block 212 is fan-shaped, and multiple heat dissipation channels 213 are formed on the light-incident surface 21. At least some of the heat dissipation channels 213 are arranged radially with the light-incident cavity 214 as the center. Compared with other arrangements, the heat dissipation path length of the radially arranged heat dissipation channels 213 is shorter, which is beneficial for rapid heat dissipation. Of course, the cross-section of the support block 212 can also be other shapes, such as square, circular, or other regular or irregular shapes.

[0051] In one specific implementation, such as Figure 1 and Figure 2 As shown, there are sixteen fan-shaped support blocks 212. Eight support blocks 212 are arranged in a ring array, and the circles of the two ring arrays overlap. The size of the support blocks 212 in the outer ring array is larger than that in the inner ring array. Furthermore, the outer contour of the support blocks 212 in the outer ring array is located on the light-emitting side surface 22. The support blocks 212 in the inner and outer ring arrays form eight first heat dissipation channels 2131 and two second heat dissipation channels 2132 on the light-incident side surface 21. The first heat dissipation channel 2131 is arranged radially around the light entrance cavity 214, and the two second heat dissipation channels 2132 are arranged in a ring and surround the light entrance cavity 214. That is, the heat dissipation channel 213 on the light entrance side surface 21 includes the first heat dissipation channel 2131 and the second heat dissipation channel 2132. During the heat dissipation process, the first heat dissipation channel 2131 can quickly dissipate the heat generated by the light source to the outside. The heat in the second heat dissipation channel 2132 needs to be conducted to the first heat dissipation channel 2131 first, and then dissipated to the outside through the first heat dissipation channel 2131.

[0052] In one implementation, such as Figure 1 , Figure 4 and Figure 6As shown, one of the first connecting structure 11 and the second connecting structure 211 is a slot, and the other is a snap-fit ​​protrusion. Alternatively, the first connecting structure 11 can be a slot and the second connecting structure 211 a snap-fit ​​protrusion, or the first connecting structure 11 can be a snap-fit ​​protrusion and the second connecting structure 211 a slot. The first connecting structure 11 and the second connecting structure 211 snap together to mount the lens 2 onto the lamp plate 1. In this design, both the first connecting structure 11 and the second connecting structure 211 have simple structures, are easy to manufacture, and the snap-fit ​​installation method facilitates convenient assembly.

[0053] Furthermore, the first connecting structure 11 and the second connecting structure 211 are bonded together, for example, using thermosetting adhesive. Specifically, in this solution, the lens 2 is first connected by snapping the first connecting structure 11 and the second connecting structure 211 together. Then, the first connecting structure 11 and the second connecting structure 211 are reinforced with thermosetting adhesive. Through these two connections, the stability of the connection between the lens 2 and the lamp panel 1 can be improved, reducing the probability of displacement of the lens 2 relative to the lamp panel 1.

[0054] Furthermore, since the light board 1 is a PCB board, which is easy to slot, the first connecting structure 11 is a slot, and the second connecting structure 211 is a snap-fit ​​protrusion. Even further, the second connecting structure 211 is a wedge-shaped block, and the shape of the first connecting structure 11 matches the shape of the second connecting structure 211. The end of the second connecting structure 211 facing the light board 1 has a guiding slope 2111. The guiding slope 2111 makes the end of the second connecting structure 211 facing the light board 1 narrower, and the guiding slope 2111 can be used to guide the second connecting structure 211 into the first connecting structure 11, reducing the difficulty of snap-fitting.

[0055] In one implementation, such as Figure 1 and Figure 4 As shown, there are at least two of each of the first connecting structures 11 and the second connecting structures 211, such as two, three, four, or even more, and the first connecting structures 11 and the second connecting structures 211 are arranged in a one-to-one correspondence. All the second connecting structures 211 are evenly spaced around the optical cavity 214, which is beneficial to the uniform force on the first connecting structures 11 and the second connecting structures 211 and can improve the stability of the lens 2 assembly.

[0056] In one implementation, such as Figure 5 and Figure 6 As shown, the light-emitting side surface 22 is hemispherical to facilitate uniform light emission.

[0057] This utility model also provides a backlight module, which includes the light-emitting component 100 in the above embodiments and the lens 2 is a backlight lens. The backlight module can be applied to products such as displays, advertising light boxes, and flat panel lights. Taking the application of the light-emitting component 100 to a display screen as an example, when the light source is working, the light-emitting component 100 emits light from the back of the display screen, and the lens 2 can adjust the emitted light from the display screen.

[0058] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this utility model that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this utility model and do not limit the scope of protection of this utility model patent.

Claims

1. A light-emitting component, characterized in that, The light-emitting component (100) includes: The lamp panel (1) is provided with a light source and a first connecting structure (11); A lens (2) is used to cover the light source; the lens (2) includes an incident light side surface (21) and an exit light side surface (22), the incident light side surface (21) is provided with a second connecting structure (211) and a plurality of support blocks (212); all the support blocks (212) are spaced apart to form a heat dissipation channel (213) on the incident light side surface (21); The support block (212) is provided with a plurality of microstructures (2121), and the support block (212) abuts against the lamp plate (1) through the microstructures (2121); the first connecting structure (11) is connected to the second connecting structure (211) to mount the lens (2) on the lamp plate (1).

2. The light-emitting component according to claim 1, characterized in that, All of the microstructures (2121) are uniformly distributed on the surface of the support block (212).

3. The light-emitting component according to claim 1, characterized in that, The microstructure (2121) is a protruding structure.

4. The light-emitting component according to claim 3, characterized in that, The microstructure (2121) has a hexagonal cross-section.

5. The light-emitting component according to any one of claims 1-4, characterized in that, The light-incident side surface (21) is provided with a light-incident cavity (214), and the light source emits light towards the light-incident cavity (214); All of the support blocks (212) are arranged in at least one annular array, and the light inlet cavity (214) is located at the center of the annular array.

6. The light-emitting component according to claim 5, characterized in that, The cross-section of the support block (212) is fan-shaped, and the light-incident side surface (21) forms multiple heat dissipation channels (213); At least a portion of the heat dissipation channels (213) are arranged radially around the light inlet cavity (214).

7. The light-emitting component according to any one of claims 1-4, characterized in that, One of the first connecting structure (11) and the second connecting structure (211) is a slot, and the other is a snap-fit ​​protrusion; the first connecting structure (11) and the second connecting structure (211) snap-fit ​​together.

8. The light-emitting component according to claim 7, characterized in that, The first connecting structure (11) is bonded to the second connecting structure (211).

9. The light-emitting component according to any one of claims 1-4, characterized in that, A light-incident cavity (214) is provided at the center of the light-incident side surface (21), and the light source emits light towards the light-incident cavity (214); The number of the first connection structure (11) and the second connection structure (211) is at least two, and they are arranged in a one-to-one correspondence; all the second connection structures (211) are evenly spaced apart around the circumference of the light inlet cavity (214).

10. A backlight module, characterized in that, The backlight module includes the light-emitting component as described in any one of claims 1-9.

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