A three-pin dual-color LED bead bracket

Abstract

This application relates to a three-pin dual-color LED chip holder, comprising a substrate. The top of the substrate has multiple evenly arranged supports, each support including two negative leads and a positive lead positioned between the two negative leads. The top of the positive lead has a cup-shaped portion with two grooves. An insulating strip is provided between the two grooves, with the top surface of the insulating strip higher than the opening of the groove. The top surfaces of the two negative leads are higher than the top surface of the insulating strip. This invention belongs to the field of LED light-emitting diode technology, achieving high-purity light emission, stable soldering, and efficient heat dissipation of dual-color LEDs through structural isolation, optimized heat dissipation, and precise positioning.

Description

Technical Field

[0001] This application relates to the field of LED light-emitting diode technology, and in particular to a three-pin dual-color LED bead bracket. Background Technology

[0002] LED brackets are the base for LED chips before encapsulation. The chips are fixed into the bracket, positive and negative electrodes are soldered on, and then encapsulated in one step with encapsulating adhesive. As the core carrier of the light-emitting diode, the structural design of the LED chip bracket directly affects the heat dissipation performance, soldering stability, and production efficiency of the chip. Traditional LED chip brackets often use a horizontal pin design, and the shared cup design causes the two light colors to mix, resulting in a decrease in color purity and a technical defect of dual-color light interference.

[0003] Therefore, there is an urgent need for a lamp bead support structure that combines high stability, efficient heat dissipation, and dual-color isolation. Utility Model Content

[0004] Therefore, it is necessary to provide a three-pin dual-color LED bead bracket, the specific technical solution of which is as follows.

[0005] A three-pin dual-color LED bead bracket includes a substrate. The top of the substrate has a plurality of evenly arranged brackets. Each bracket includes two negative leads and a positive lead disposed between the two negative leads. The top of the positive lead has a cup body with two cup grooves. An isolation strip is provided between the two cup grooves. The top surface of the isolation strip is higher than the opening of the cup groove. The top surfaces of the two negative leads are higher than the top surface of the isolation strip.

[0006] Furthermore, the negative electrode pin includes a mounting rod at the top, a connecting rod at the bottom connected to the top of the substrate, and a transition connecting plate disposed between the mounting rod and the connecting rod.

[0007] Furthermore, the bottom of the inner side of the mounting rod is provided with a locking protrusion, and the upper and lower parts of the inner side of the mounting rod are provided with inclined surface structures connected to the locking protrusion.

[0008] Furthermore, the cup body is a conical structure that is larger at the top and smaller at the bottom, and the inclined structure at the top is arranged parallel to the conical surface of the conical structure.

[0009] Furthermore, the inner side of the transition connecting plate is aligned with the inner side of the bottom end of the mounting rod, and the outer side of the transition connecting plate is aligned with the outer side of the top end of the connecting rod.

[0010] Furthermore, the outer side of the top of the transition connecting plate is provided with an arc-shaped concave surface that connects to the outer side of the bottom end of the mounting rod.

[0011] Furthermore, one of the transition connecting plates has a locking notch in the inner recess at the bottom.

[0012] Furthermore, the substrate is provided with strips corresponding to the negative and positive leads, and grooves are provided between two adjacent strips, with each groove having the same width and the same spacing between two adjacent grooves.

[0013] Furthermore, the bottom of the substrate is provided with a plurality of positioning holes corresponding to the positive pins of each of the brackets, and the bottom end of the substrate is provided with a positioning notch between two adjacent positioning holes.

[0014] Furthermore, the climbing groove is a square groove structure that runs through the substrate, and the positioning notch is correspondingly provided with the climbing groove between two adjacent brackets.

[0015] Compared with existing technologies, this utility model has the following beneficial effects:

[0016] This utility model's three-pin dual-color LED bead bracket features an isolation strip extending above the two cup slots of the dual-color cup body. When the LED chip inside the cup slot is coated with a phosphor layer and silicone, the isolation strip physically blocks the structure within the two cup slots, preventing color mixing and physically blocking the dual-color light path. This reduces the light mixing rate to below 10%, effectively reducing light mixing and ensuring that the two colors can independently display more saturated primary colors. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural front view of the three-pin dual-color LED bead bracket of this utility model;

[0019] Figure 2 This is a side view of the structure of the three-pin dual-color LED bead bracket of this utility model;

[0020] Figure 3 This is an enlarged front view of a portion of the support structure in this utility model;

[0021] Figure 4 This is an enlarged top view of a portion of the support structure in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Substrate; 2. Support; 3. Negative electrode pin; 4. Positive electrode pin; 5. Cup body; 6. Cup groove; 7. Isolation strip; 8. Mounting rod; 9. Connecting rod; 10. Transition connecting plate; 11. Locking protrusion; 12. Angled structure; 13. Arc-shaped concave surface; 14. Locking notch; 15. Strip rod; 16. Groove; 17. Positioning hole; 18. Positioning notch; 19. Friction texture; 20. Flow-blocking groove. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] The embodiments of this utility model will be described below based on its overall structure.

[0026] Reference Figures 1-4 As shown, this embodiment provides a three-pin dual-color LED bead bracket, including a substrate 1. The top of the substrate 1 is provided with a plurality of evenly arranged brackets 2. Each bracket 2 includes two negative electrode pins 3 and a positive electrode pin 4 disposed between the two negative electrode pins 3. The top of the positive electrode pin 4 is provided with a cup body 5. The cup body 5 is provided with two cup grooves 6. An isolation strip 7 is provided between the two cup grooves 6. The top surface of the isolation strip 7 is higher than the groove opening of the cup groove 6, and the top surface of the two negative electrode pins 3 is higher than the top surface of the isolation strip 7.

[0027] In this utility model of a three-pin dual-color LED bead bracket, three pins of the bracket 2 are formed by stamping on the substrate 1. Two negative pins 3 are symmetrically arranged on both sides of the positive pin 4. The two negative pins 3 are used for electrical connection with the negative terminal of the circuit. A cup body 5 is formed by stamping at the top of the positive pin 4. Two cup grooves 6 are formed by stamping on the cup body 5. The isolation strip 7 is 0.2mm higher than the cup grooves 6. When the phosphor layer and silicone are coated around the LED chip in the cup grooves 6, the two cup grooves 6 will be filled with different phosphors or colloids respectively. The isolation strip 7 plays a physical barrier role to prevent the two colloids from mixing, avoid color crossing, physically block the dual-color light path, and reduce the light mixing rate to below 10%. The isolation strip 7 effectively reduces light mixing and ensures that the two colors can be displayed independently with more saturated primary colors.

[0028] Specifically, refer to Figure 3As shown, the negative electrode pin 3 includes a mounting rod 8 at the top, a connecting rod 9 at the bottom connected to the top of the substrate 1, and a transition connecting plate 10 disposed between the mounting rod 8 and the connecting rod 9. In this embodiment, the mounting rod 8 and the connecting rod 9 are vertically arranged. The transition connecting plate 10 is used to connect the mounting rod 8 and the connecting rod 9. The top of the mounting rod 8 is used to weld a wire to the negative electrode of the LED chip inside the cup body 5 for electrical connection. The transition connecting plate 10 is used to increase the heat dissipation area, accelerate heat dissipation, and conduct electricity.

[0029] Specifically, refer to Figure 3 As shown, the bottom of the inner side of the mounting rod 8 is provided with a locking protrusion 11, and the upper and lower parts of the inner side of the mounting rod 8 are provided with inclined structures 12 connected to the locking protrusion 11. The cup body 5 is a cone structure that is larger at the top and smaller at the bottom. The inclined structure 12 located at the top is arranged parallel to the cone surface of the cone structure. In this embodiment, after the protective colloid is sealed at the top of the negative electrode pin 3 and the positive electrode pin 4, the locking protrusion 11 of the negative electrode pin 3 and the inclined structure form a mechanical locking structure for positioning the solidified colloid, which effectively prevents the colloid from falling off. The tensile strength is ≥5N, and the colloid shedding rate is reduced to below 0.05%.

[0030] Specifically, refer to Figure 3 As shown, the inner side of the transition connecting plate 10 is aligned with the inner side of the bottom end of the mounting rod 8, and the outer side of the transition connecting plate 10 is aligned with the outer side of the top end of the connecting rod 9, making the entire bracket 2 a structure that is smaller at the top and larger at the bottom.

[0031] Specifically, refer to Figure 3 As shown, the outer side of the top of the transition connecting plate 10 is provided with an arc-shaped concave surface 13 that is connected to the outer side of the bottom end of the mounting rod 8, and the inner side of the bottom of one of the transition connecting plates 10 is provided with a locking notch 14.

[0032] The outer top of the transition connecting plate 10 is provided with an arc-shaped concave surface 13 that connects to the bottom of the mounting rod 8, providing a smooth transition and reducing stress concentration; the locking notch 14 is used to prevent reverse insertion and to distinguish the two negative pins 3.

[0033] In this embodiment, refer to Figure 1 and Figure 3 As shown, the side of the cup body 5 is provided with friction texture 19, which can increase the adhesion between the colloid and the metal cup wall and reduce the risk of delamination.

[0034] The bottom of the negative electrode pin 3 and the positive electrode pin 4 is provided with a flow-blocking groove 20. The flow-blocking groove 20 is a groove structure processed on the bottom of the negative electrode pin 3 and the positive electrode pin 4, with a depth of 0.1-0.3mm, which is used to physically block the encapsulating colloid (such as silicone / epoxy resin) from flowing downward at the leading edge of the curing process.

[0035] Specifically, refer to Figure 1 As shown, the substrate 1 is provided with strip-shaped bars 11 corresponding to the negative electrode pin 3 and the positive electrode pin 4. Grooves 12 are provided between adjacent strip-shaped bars 11, and the width of each groove 12 is the same, as is the spacing between adjacent grooves 12. In this embodiment, the grooves 12 and strip-shaped bars 11 are formed on the substrate 1 by stamping. The strip-shaped bars 11 are collinear with each pin, meaning that the strip-shaped bars 11 can serve as extended sections for each pin. After stamping and shearing, the strip-shaped bars 11 and the pins can form a long pin.

[0036] The slot 12 is used to cooperate with the positioning pins of the equipment in the SMT placement or die bonding process to achieve precise alignment.

[0037] Specifically, refer to Figure 1 As shown, the bottom of the substrate 1 is provided with a plurality of positioning holes 13 corresponding to the positive pins 4 of each of the brackets 2, and the bottom end of the substrate 1 is provided with a positioning notch 18 between two adjacent positioning holes 13. The positioning notch 18 is linked with the positioning hole 17 and the groove 12. The positioning notch 18 and the groove 12 are used for coarse positioning, and the positioning hole 17 achieves fine positioning, forming a two-stage positioning system.

[0038] Specifically, refer to Figure 1 As shown, the climbing groove 12 is a square groove structure that runs through the substrate 1, and the positioning notch 18 is correspondingly provided with the climbing groove 12 between two adjacent brackets 2.

[0039] This utility model's three-pin dual-color LED bead bracket achieves high-purity light emission, stable soldering, and efficient heat dissipation of dual-color LEDs through three core technologies: structural isolation, heat dissipation optimization, and precise positioning. The two cups 6 are physically separated by an isolation strip 7, blocking cross-interference of the dual-color light. Different colored LED chips, such as red / blue, and corresponding phosphors are encapsulated within the cups, with the isolation strip height of 0.2mm ensuring optical path separation. The locking protrusion 11 of the negative electrode pin 3 and the inclined structure 12 form a mechanical lock to prevent solder joint detachment. The conical cup 5 of the positive electrode pin 4 disperses thermal stress and prevents cracking. The groove 16 forms a heat dissipation channel, which, together with the strip rod 15, reduces thermal resistance. The positioning notch 18 and positioning hole 17 enable high-precision automated assembly.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above embodiments only illustrate one or more implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A three-pin two-color lamp bead support comprising a substrate (1), characterized in that, The top of the substrate (1) is provided with a plurality of uniformly arranged supports (2). Each support (2) includes two negative electrode pins (3) and a positive electrode pin (4) located between the two negative electrode pins (3). The top of the positive electrode pin (4) is provided with a cup body (5). The cup body (5) is provided with two cup grooves (6). An isolation strip (7) is provided between the two cup grooves (6). The top surface of the isolation strip (7) is higher than the groove opening of the cup groove (6). The top surface of the two negative electrode pins (3) is higher than the top surface of the isolation strip (7).

2. The three-pin bi-color lamp bead support of claim 1, wherein, The negative electrode pin (3) includes a mounting rod (8) at the top, a connecting rod (9) at the bottom connected to the top of the substrate (1), and a transition connecting plate (10) between the mounting rod (8) and the connecting rod (9).

3. The three-pin bi-color lamp bead support of claim 2, wherein, The bottom of the inner side of the mounting rod (8) is provided with a locking protrusion (11), and the upper and lower parts of the inner side of the mounting rod (8) are provided with inclined surface structures (12) connected to the locking protrusion (11).

4. The three-pin bi-color lamp holder of claim 3, wherein, The cup body (5) is a cone structure that is larger at the top and smaller at the bottom, and the inclined structure (12) located at the top is arranged parallel to the cone surface of the cone structure.

5. The three-pin bi-color lamp holder according to claim 2 or 3 or 4, characterized in that, The inner side of the transition connecting plate (10) is aligned with the inner side of the bottom end of the mounting rod (8), and the outer side of the transition connecting plate (10) is aligned with the outer side of the top end of the connecting rod (9).

6. The three-pin bi-color lamp holder of claim 5, wherein, The outer side of the top of the transition connecting plate (10) is provided with an arc-shaped concave surface (13) that is connected to the outer side of the bottom end of the mounting rod (8).

7. The three-pin bi-color LED holder of claim 5, wherein, One of the transition connecting plates (10) has a locking notch (14) in the inner recess at the bottom.

8. The three-pin bi-color lamp holder of claim 7, wherein, The substrate (1) is provided with strip rods (11) corresponding to the negative electrode pin (3) and the positive electrode pin (4). There are grooves (12) between two adjacent strip rods (11). The width of each groove (12) is the same and the spacing between two adjacent grooves (12) is the same.

9. The three-pin bi-color lamp holder of claim 8, wherein, The bottom of the substrate (1) is provided with a plurality of positioning holes (13) corresponding to the positive pins (4) of each bracket (2), and the bottom end of the substrate (1) is provided with a positioning notch (18) between two adjacent positioning holes (13).

10. The three-pin bi-color lamp bead support of claim 9, wherein, The climbing groove (12) is a square groove structure that runs through the substrate (1), and the positioning notch (18) is correspondingly provided with the climbing groove (12) between two adjacent brackets (2).

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