LED lamp bead with uniform light emission

Abstract

The utility model discloses a kind of LED lamp beads of uniform light emission, including substrate (1) and LED chip (2), the LED chip (2) is fixedly connected at the top of substrate (1), the LED chip (2) is provided with three, and three LED chips (2) are equidistant distribution, the outside of substrate (1) top is fixedly connected with limit support (3), the inner wall of limit support (3) is movably connected with lens one (4).The utility model is by being provided with lens one (4), three equidistant distribution LED chip (2) can provide more uniform light source basis, can be realized accurate color adjustment by respectively controlling brightness;The limit support (3) of substrate (1) outside can be stably installed and positioned to lens one (4), ensure that the relative position of lens one (4) and LED chip (2) is stable, reduce the light distribution uneven caused by position offset, to improve the light emission uniformity and color adjustment precision of LED lamp bead overall.

Description

Technical Field

[0001] This utility model relates to the field of LED lamp bead technology, specifically to an LED lamp bead with uniform light emission. Background Technology

[0002] With the significant improvement in the luminous efficiency of LED chips and the continuous reduction in cost, LED application products have gradually entered the market. LED chips emit light through phosphor wafers, but due to differences in color temperature, the light emission of current LED beads is generally not ideal.

[0003] Existing examples include Chinese utility model patent CN205231054U, which discloses an LED bead with uniform light intensity distribution. This LED bead includes a packaging substrate and an LED chip. A circular dammed adhesive wall is disposed in the center of the packaging substrate. The LED chip is placed at the center inside the dammed adhesive wall. An auxiliary light-emitting LED chip is disposed on each of the four equal bisectors of the dammed adhesive wall, and the auxiliary light-emitting LED chips are disposed on the inner side of the dammed adhesive wall. A lens is covered along the inner edge of the dammed adhesive wall. This utility model has at least three auxiliary light-emitting LED chips on the dammed adhesive wall, plus the LED chip in the center of the dammed adhesive wall, forming a light-emitting area without dead zones for the entire LED bead. By setting a reasonable output power for the LED chips, the LED bead emits light uniformly.

[0004] The above solution has obvious limitations. The circular lens is poorly compatible with the side auxiliary LED chip structure. Due to the limitations of the lens curvature and optical path, the side light cannot effectively enter the lens to participate in the adjustment, which results in the auxiliary light-emitting element not being able to fully perform and affecting the uniformity of color emission. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a uniformly emitting LED bead that has the advantages of improving luminous uniformity and color adjustment accuracy. This solves the obvious limitations of the above solutions, such as poor compatibility between the circular lens and the side auxiliary LED chip structure, and the difficulty for side light to effectively enter the lens for adjustment due to the limitations of lens curvature and optical path. This results in the auxiliary light-emitting element not being able to fully perform, poor luminous uniformity and color temperature adjustment accuracy, and affects the uniformity of color luminous emission.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including a substrate 1 and LED chips 2, wherein the LED chips 2 are fixedly connected to the top of the substrate 1, and three LED chips 2 are provided and distributed at equal distances. A limiting frame 3 is fixedly connected to the outer side of the top of the substrate 1, and a lens 4 is movably connected to the inner wall of the limiting frame 3.

[0007] As a preferred embodiment of this utility model, a second lens 5 is provided at the bottom of the first lens 4, and a groove 6 is provided at the bottom of the second lens 5. The second lens 5 is movably connected to the inner wall of the limiting frame 3.

[0008] As a preferred embodiment of this utility model, the bottom of the lens 4 is fixedly connected to a positioning frame 7.

[0009] As a preferred embodiment of this utility model, the top of the inner wall of the limiting frame 3 is provided with an annular groove 8, and the surface of the lens 4 is fixedly connected with a fixing ring 9.

[0010] As a preferred embodiment of this utility model, a fixing block 10 is fixedly connected to the bottom of the fixing ring 9.

[0011] As a preferred embodiment of this utility model, a fixing groove 11 is provided at the bottom of the inner wall of the annular groove 8.

[0012] In a preferred embodiment of this invention, the bottom of lens 4 and the top of lens 5 are bonded together with photosensitive adhesive.

[0013] As a preferred embodiment of this utility model, the top of the limiting frame 3 is threadedly connected to a fixing cylinder 12.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By setting lens 4, the three equally spaced LED chips 2 can provide a more uniform light source foundation, and precise color adjustment can be achieved by controlling the brightness separately; the limiting frame 3 on the outside of the substrate 1 can stably install and position lens 4, ensuring the relative position of lens 4 and LED chip 2 is stable, reducing uneven light distribution caused by positional deviation, thereby improving the overall light emission uniformity and color adjustment accuracy of LED beads, and has the advantages of improving light emission uniformity and color adjustment accuracy.

[0015] 2. By setting up a second lens 5 and a groove 6, the groove 6 at the bottom of the second lens 5 can increase the range of light entering the second lens 5, and can receive more light from the LED chip 2, reducing light loss; the second lens 5, together with the first lens 4, can perform secondary transmission and convergence of light, further optimize the light path, make the light enter the first lens 4 more evenly, and improve the uniformity of light emission.

[0016] 3. By setting up a positioning frame 7, the positioning frame 7 at the bottom of lens 1 4 can assist lens 1 4 and lens 2 5 in precise docking, ensuring the accuracy of their relative positions, avoiding optical path disorder caused by assembly deviation, improving the structural assembly accuracy, ensuring the stability of the light transmission path, and thus maintaining the uniformity of light emission. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the lens of this utility model; Figure 3 This is a schematic diagram of the positioning frame structure of this utility model; Figure 4 This is a schematic diagram of the three-dimensional exploded structure of this utility model.

[0018] In the diagram: 1. Substrate; 2. LED chip; 3. Limiting frame; 4. Lens 1; 5. Lens 2; 6. Groove; 7. Positioning frame; 8. Ring groove; 9. Fixing ring; 10. Fixing block; 11. Fixing groove; 12. Fixing cylinder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, the present invention includes a substrate 1 and LED chips 2. The LED chips 2 are fixedly connected to the top of the substrate 1. There are three LED chips 2, and the three LED chips 2 are distributed at equal distances. A limiting frame 3 is fixedly connected to the outer side of the top of the substrate 1, and a lens 4 is movably connected to the inner wall of the limiting frame 3.

[0021] refer to Figure 3 Lens 2 5 is provided at the bottom of lens 1 4. Lens 2 5 has a groove 6 at the bottom and is movably connected to the inner wall of the limiting frame 3.

[0022] As a technical optimization of this utility model, by setting lens 2 5 and groove 6, the groove 6 at the bottom of lens 2 5 can increase the range of light entering lens 2 5, and can receive more light from LED chip 2, reducing light loss; lens 2 5, together with lens 1 4, can perform secondary transmission and convergence of light, further optimize the light path, make light enter lens 1 4 more evenly, and improve the uniformity of light emission.

[0023] refer to Figure 4 The bottom of lens 4 is fixedly connected to a positioning bracket 7.

[0024] As a technical optimization of this utility model, by setting a positioning frame 7, the positioning frame 7 at the bottom of lens 1 4 can assist lens 1 4 and lens 2 5 to accurately align, ensure the relative position of the two is accurate, avoid optical path disorder caused by assembly deviation, improve the structural assembly accuracy, ensure the stability of the light transmission path, and thus maintain the uniformity of light emission.

[0025] refer to Figure 4 The top of the inner wall of the limiting frame 3 is provided with an annular groove 8, and a fixing ring 9 is fixedly connected to the surface of the lens 4.

[0026] As a technical optimization of this utility model, by setting an annular groove 8 and a fixing ring 9, the annular groove 8 at the top of the inner wall of the limiting frame 3 cooperates with the fixing ring 9 on the surface of the lens 4, which can provide a stable installation track and positioning reference for the lens 4, making it easy for the lens 4 to be quickly and accurately installed into the limiting frame 3, while preventing the lens 4 from shifting laterally during use, ensuring optical path stability and improving light emission uniformity.

[0027] refer to Figure 4 The bottom of the fixing ring 9 is fixedly connected to the fixing block 10.

[0028] As a technical optimization of this utility model, by setting a fixing block 10, the fixing block 10 at the bottom of the fixing ring 9 can cooperate with the fixing groove 11 in the ring groove 8, thereby enhancing the positioning stability of the fixing ring 9 in the ring groove 8, preventing the lens 4 from shaking slightly due to vibration and other factors, further ensuring the accurate relative position of the lens 4 and the LED chip 2, maintaining the stability of the optical path, and improving the uniformity of light emission.

[0029] refer to Figure 4 A fixing groove 11 is provided at the bottom of the inner wall of the annular groove 8.

[0030] As a technical optimization of this utility model, by setting a fixing groove 11, the fixing groove 11 at the bottom of the inner wall of the ring groove 8 provides a matching installation and positioning space for the fixing block 10 at the bottom of the fixing ring 9. By fitting the fixing block 10 with the fixing groove 11, the rotation and displacement of the fixing ring 9 can be effectively restricted, the installation firmness of the lens 4 can be enhanced, the optical path can be avoided, and the uniformity of light emission can be guaranteed.

[0031] refer to Figure 4 The bottom of lens 4 and the top of lens 5 are bonded together with photosensitive adhesive.

[0032] As a technical optimization of this utility model, by setting lens 2 5, lens 1 4 and lens 2 5 are bonded together with photosensitive adhesive, which can not only achieve a firm connection between the two and ensure structural stability, but also reduce the refraction and loss of light at the connection point of the two lenses due to the good light transmittance of the photosensitive adhesive, thus ensuring efficient light transmission and improving the uniformity and efficiency of light emission.

[0033] refer to Figure 4 The top of the limit bracket 3 is threadedly connected to a fixing cylinder 12.

[0034] As a technical optimization of this utility model, by setting a fixing cylinder 12, the fixing cylinder 12 at the top of the limiting frame 3 is connected by a thread. After the lens 4 is installed in place, the fixing ring 9 can be pressed and fixed to prevent the lens 4 from loosening or shifting during use, ensuring the long-term stability of the optical path, and improving the structural reliability and light emission uniformity of the LED beads.

[0035] The working principle and usage process of this utility model are as follows: During use, three equally spaced LED chips 2 are fixed to the top of the substrate 1, forming a multi-light source layout. By controlling the brightness of the three LED chips 2 of different colors respectively, precise color adjustment can be achieved, laying the foundation for uniform light emission. The light emitted by the LED chips 2 first enters lens 2 5. The groove 6 at the bottom of lens 2 5 expands the light receiving range and reduces light loss. Subsequently, the light is transmitted through lens 2 5 to lens 1 4. The two are bonded together with photosensitive adhesive, ensuring structural stability and reducing light refraction loss at the connection point, achieving efficient secondary transmission and convergence of light. Lens 1 4 is embedded in the annular groove 8 on the inner wall of the limiting frame 3 through a fixing ring 9 on its surface. The fixing block 10 at the bottom of the fixing ring 9... The lens 4 engages with the fixing groove 11 within the ring groove 8 to achieve initial positioning and prevent lateral displacement. The fixing cylinder 12 at the top of the limiting frame 3 presses the fixing ring 9 through a threaded connection, further ensuring the relative position stability of the lens 4 with the LED chip 2 and the second lens 5, avoiding light path disorder caused by vibration, etc. Through the cooperation of the lens 4 and the second lens 5, the light emitted by the multiple chips is uniformly adjusted and integrated. Combined with stable structural positioning, the light is uniformly output after two transmissions, ultimately improving the uniformity of LED light emission. At the same time, the color adjustment accuracy is improved through multi-chip brightness control.

[0036] In summary, this type of uniformly emitting LED bead, by setting lens 4, provides a more uniform light source foundation for three equally spaced LED chips 2, and allows for precise color adjustment by controlling the brightness of each chip individually. The limiting bracket 3 on the outer side of the substrate 1 can stably position and install lens 4, ensuring the relative position of lens 4 and LED chip 2 is stable, reducing uneven light distribution caused by positional deviation, thereby improving the overall uniformity of light emission and the accuracy of color adjustment of the LED bead.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A uniformly emitting LED bead, comprising a substrate (1) and an LED chip (2), characterized in that: The LED chip (2) is fixedly connected to the top of the substrate (1). There are three LED chips (2) and the three LED chips (2) are distributed at equal distances. A limit frame (3) is fixedly connected to the outer side of the top of the substrate (1). A lens (4) is movably connected to the inner wall of the limit frame (3).

2. The LED bead with uniform light emission according to claim 1, characterized in that: The bottom of the first lens (4) is provided with a second lens (5), and the bottom of the second lens (5) is provided with a groove (6). The second lens (5) is movably connected to the inner wall of the limiting frame (3).

3. The LED bead with uniform light emission according to claim 1, characterized in that: The bottom of the lens (4) is fixedly connected to a positioning frame (7).

4. The LED bead with uniform light emission according to claim 1, characterized in that: The top of the inner wall of the limiting frame (3) is provided with an annular groove (8), and a fixing ring (9) is fixedly connected to the surface of the lens (4).

5. The LED bead with uniform light emission according to claim 4, characterized in that: The bottom of the fixing ring (9) is fixedly connected to a fixing block (10).

6. The LED bead with uniform light emission according to claim 4, characterized in that: A fixing groove (11) is provided at the bottom of the inner wall of the annular groove (8).

7. The LED bead with uniform light emission according to claim 2, characterized in that: The bottom of lens one (4) and the top of lens two (5) are bonded together with photosensitive adhesive.

8. The LED bead with uniform light emission according to claim 1, characterized in that: The top of the limiting frame (3) is threadedly connected to a fixing cylinder (12).

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