Two-time centrifugal high-brightness LED white light lamp bead
Through the cross-structure design and independently driven pad components, the problem of short circuit of conductive pads in LED white light beads is solved, the production yield and brightness are improved, and more complex lighting effects are achieved.
Patent Information
- Application Number
- CN202422589591.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In existing white-light LED lamp beads, multiple conductive pads are easily accidentally touched during assembly, causing short circuits and affecting assembly stability and efficiency.
The pad assembly adopts a cross-structure design to separate four conductive pads and drive two LED chips respectively through a single lamp cup slot and four pins to ensure welding accuracy and independent control.
Effectively prevent short circuits, improve production yield and lamp brightness, and achieve more complex lighting effects and color effects.
Smart Images
Figure CN223349024U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lamp beads, in particular to a double centrifugal high-brightness LED white light lamp bead. Background Art
[0002] LED white light lamp beads typically use a combination of blue LED chips and phosphors to achieve white light emission. The blue LED chip produces white light through the fluorescence conversion of the phosphor. During the project establishment phase, it is necessary to evaluate and select the appropriate LED chips and phosphors to achieve the desired color temperature, color index, and luminous flux requirements. Currently, in order to effectively increase the overall brightness of white light lamp beads, two or more LED chips are usually installed in them, which requires double the conductive pads. However, when assembling four or more conductive pads, it is easy for them to accidentally touch adjacent pads and cause short circuits, thereby affecting the stability and efficiency of the assembly. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a double centrifugal high-brightness LED white light lamp bead to solve the problem that the four conductive pads equipped in the LED white light lamp bead with two LED chips proposed in the above background technology are prone to accidentally touching the adjacent pads during assembly and causing a short circuit.
[0004] To achieve the above objectives, the present invention provides the following technical solutions: a double centrifugal high-brightness LED white light bead, comprising a bead holder and a lamp cup groove that is recessed downward in the middle of the top surface of the bead holder, a solder pad assembly being mounted at the bottom of the lamp cup groove, and an LED chip being mounted on the top of the solder pad assembly;
[0005] The pad assembly consists of a cross structure welded to the middle of the bottom surface of the lamp cup slot and four conductive pads that fit into the fan-shaped gap of the cross structure, and the ends of the cross structure and the outer sides of the conductive pads are in contact with the side surfaces of the lamp cup slot;
[0006] There are two LED chips, and the two LED chips are respectively arranged on two diagonally arranged conductive pads.
[0007] Preferably, the LED chip is a blue light chip, and a phosphor-type die-bonding adhesive is provided between the bottom of the LED chip and the conductive pad.
[0008] Preferably, a gold wire is welded between the LED chip and two of the conductive pads, a high thermal conductivity fluorescent silicone is encapsulated inside the lamp cup groove, and the high thermal conductivity fluorescent silicone is wrapped around the outer surface of the LED chip and the gold wire.
[0009] Preferably, a downward convex base is installed at the bottom of the lamp bead bracket, and an offset gap is formed from the middle to both sides of the bottom surface of the downward convex base.
[0010] Preferably, two flat pins are installed on both sides of the lamp bead bracket, and the four pins are respectively welded to four conductive pads.
[0011] Preferably, the lamp bead bracket is a rectangular structure, and an identification notch is provided at a corner of the top surface of the lamp bead bracket, and the identification notch is triangular.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] 1. The utility model can effectively separate the four conductive pads by setting a cross of matching size at the bottom of the lamp cup slot, effectively preventing short circuit caused by accidental touching of adjacent pads during welding. At the same time, the cross structure can be used as a reference point for welding positioning, ensuring that the welding wire or solder falls accurately on the predetermined pad during welding, and it is also more convenient for the conductive pads to fall into the correct position during assembly.
[0014] 2. The utility model uses a single lamp cup slot with four conductive pads and four pins to drive two LED chips separately, so that each LED chip can be driven and dimmed by an independent circuit controller, thereby facilitating the realization of more complex lighting effects or color effects.
[0015] 3. The utility model can effectively improve the production yield and brightness of LED white light lamps through two centrifugal processes. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the top structure of the utility model;
[0018] Figure 3 This is a schematic structural diagram of the pad assembly of the utility model;
[0019] In the figure: 1. Lamp bead bracket; 101. Identification notch; 2. Lamp cup slot; 3. Solder pad assembly; 301. Cross structure; 302. Conductive solder pad; 303. Phosphor-type die-bonding adhesive; 4. LED chip; 401. Gold wire; 5. High thermal conductivity fluorescent silicone; 6. Convex base; 7. Pin. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] To solve the problem that the four conductive pads of the LED white light bead with two LED chips are easy to accidentally touch the adjacent pads during assembly and cause a short circuit, please refer to Figure 1-Figure 3 The utility model provides a double centrifugal high-brightness LED white light lamp bead, which has a lamp bead bracket 1 and a lamp cup groove 2 which is recessed downward in the middle of the top surface of the lamp bead bracket 1. A solder pad assembly 3 is installed at the bottom of the lamp cup groove 2, and an LED chip 4 is installed on the top of the solder pad assembly 3.
[0022] It is worth noting that the pad assembly 3 consists of a cross structure 301 welded to the middle of the bottom surface of the lamp cup groove 2 and four conductive pads 302 that fit within the fan-shaped gaps of the cross structure 301. The ends of the cross structure 301 and the outer sides of the conductive pads 302 are both in contact with the side surfaces of the lamp cup groove 2. There are two LED chips 4, which are respectively arranged on two diagonally arranged conductive pads 302. By placing the cross structure 301 that fits the bottom diameter of the lamp cup groove 2 within the lamp cup groove 2, the middle of the cross structure 301 can be coaxial with the center of the circle of the lamp cup groove 2, thereby effectively ensuring that the four fan-shaped gaps formed between the cross structure 301 and the side walls of the lamp cup groove 2 are consistent in shape and size, so as to facilitate the subsequent installation of four identical conductive pads 302. In addition, the cross structure 301 can be used to effectively separate the four conductive pads 302, effectively preventing short circuits caused by accidentally touching adjacent pads during the welding process. At the same time, the cross structure 301 can serve as a reference point for welding positioning, ensuring that the welding wire or solder accurately falls on the predetermined pad during welding.
[0023] Specifically, two flat pins 7 are installed on both sides of the lamp bead bracket 1, and the four pins 7 are respectively welded to the four conductive pads 302. By using a single lamp cup slot 2 in the lamp bead bracket 1 with four conductive pads 302 and four pins 7, two LED chips 4 are driven respectively, so that each LED chip 4 can be driven and dimmed by an independent circuit controller, thereby facilitating the individual control of the brightness, color temperature or color of each LED chip 4, thereby facilitating the realization of more complex lighting effects or color effects. At the same time, combined with the light output of the two LED chips 4, the overall brightness of the LED lamp bead can be significantly increased.
[0024] More specifically, the LED chip 4 is a blue light chip. A phosphor-based die-bonding adhesive 303 is placed between the bottom of the LED chip 4 and the conductive pads 302. Gold wires 401 are soldered between the LED chip 4 and two of the conductive pads 302. Highly thermally conductive fluorescent silicone 5 is encapsulated within the lamp cup slot 2 and wraps around the outer surfaces of the LED chip 4 and the gold wires 401. The phosphor-based die-bonding adhesive 303 is made by mixing a high-thermal-conductivity base adhesive with a certain proportion of phosphor powder and evenly adding it to the adhesive tray of an ASM die-bonding machine. The die-bonding machine secures the blue LED chip 4 and the phosphor-based die-bonding adhesive 303 to the conductive pads 302 at the designated locations. The chip-bonding material is then centrifuged in a centrifuge and then baked at high temperature. The chip-bonding bracket is then plasma cleaned, and the gold wires 401 are soldered to the LED chip 4 and the conductive pads 302 using high-precision OPTOLUX equipment. Next, the soldered material is dehumidified at high temperature. After dehumidification, the phosphor and silica gel are mixed in a certain ratio and evenly coated on the surface of the blue light chip using a high-precision dispensing machine. The coated material is then centrifuged and baked at high temperature. After baking, the material is stripped and finally separated by light and color. This achieves two centrifugal processes, thereby optimizing the brightness of the white light LED beads.
[0025] like Figure 1 As shown, the bottom of the lamp bead holder 1 is mounted with a downwardly convex base 6. A gap is formed from the middle of the bottom surface of the downwardly convex base 6 to the sides. The lamp bead holder 1 is a rectangular structure, and a triangular identification notch 101 is provided at one corner of the top surface of the lamp bead holder 1. The gap formed at the bottom of the downwardly convex base 6 provides a storage area for the tail end of the pin 7, thereby improving the overall aesthetics of the LED lamp bead.
[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.
Claims
1. A double centrifugal high-brightness LED white light bead, comprising a bead holder (1) and a lamp cup groove (2) arranged in the middle of the top surface of the bead holder (1) and recessed downward, characterized in that: A soldering pad assembly (3) is mounted on the bottom of the lamp cup slot (2), and an LED chip (4) is mounted on the top of the soldering pad assembly (3); The pad assembly (3) is composed of a cross structure (301) welded to the middle of the bottom surface of the lamp cup groove (2) and four conductive pads (302) that fit within the fan-shaped gap of the cross structure (301), and the ends of the cross structure (301) and the outer sides of the conductive pads (302) are both in contact with the side surfaces of the lamp cup groove (2); The number of the LED chips (4) is two, and the two LED chips (4) are respectively arranged on two diagonally arranged conductive pads (302).
2. The double centrifugal high-brightness LED white light bead according to claim 1, characterized in that: The LED chip (4) is a blue light chip, and a phosphor-type crystal-bonding adhesive (303) is provided between the bottom of the LED chip (4) and the conductive pad (302).
3. The double centrifugal high-brightness LED white light bead according to claim 2, characterized in that: A gold wire (401) is welded between the LED chip (4) and two of the conductive pads (302), a high thermal conductivity fluorescent silica gel (5) is encapsulated inside the lamp cup groove (2), and the high thermal conductivity fluorescent silica gel (5) is wrapped around the outer surface of the LED chip (4) and the gold wire (401).
4. The double centrifugal high-brightness LED white light bead according to claim 1, characterized in that: A lower convex base (6) is installed at the bottom of the lamp bead bracket (1), and a dislocation gap is formed from the middle of the bottom surface of the lower convex base (6) to both sides.
5. The double centrifugal high-brightness LED white light bead according to claim 1, characterized in that: Two flat pins (7) are installed on both sides of the lamp bead bracket (1), and the four pins (7) are respectively welded to four conductive pads (302).
6. The double centrifugal high-brightness LED white light bead according to claim 1, characterized in that: The lamp bead bracket (1) is a rectangular structure, and a marking notch (101) is provided at a corner of the top surface of the lamp bead bracket (1), and the marking notch (101) is in a triangular shape.