Multi-channel integrated control LED light string

Abstract

The utility model discloses a kind of multi-channel integrated control LED lamp string, including plug, controller and multiple LED lamp panel, plug is used to access ac power supply, controller is connected different pad of each LED lamp panel by three-way connection line respectively. Each LED lamp panel integrates six LED chips, LED chip is connected to four pads that are symmetrically distributed up and down and left and right by specific mode, and the series connection control of three-way connection line is realized between each LED chip. Controller can be switched by adjusting the signal on three-way connection line, the light-emitting state switching of the multiple combination mode of six LED chips in each lamp panel. The utility model does not need to set control IC on lamp panel, simplifies lamp panel structure, reduces cost, improves control flexibility and system stability simultaneously, and is suitable for the efficient control demand in various LED lamp string scenes.

Description

Technical Field

[0001] This utility model relates to the field of LED light string technology, and in particular to a multi-channel integrated control LED light string. Background Technology

[0002] With the widespread application of LED lighting technology, LED light strings have become widely used in holiday decorations, advertising signage, and landscape lighting due to their advantages such as flexible structure, high luminous efficiency, and rich decorative effects. Existing LED light strings mainly use control chips (ICs) to achieve the switching effect of light emission from the LED beads, with various control methods including constant current control, PWM dimming, and point-by-point control.

[0003] However, traditional LED light strings typically have the following shortcomings: 1. High control complexity: In order to achieve multiple light emission modes, it is often necessary to integrate an independent IC control chip on each LED bead or LED panel, which increases circuit complexity and manufacturing cost.

[0004] 2. Complex wiring and difficult maintenance: Existing light strings mostly use one or two-wire control, which makes the circuit control logic more complex and the maintenance and replacement costs higher.

[0005] 3. Poor scalability: As the length of the LED string increases, voltage attenuation and control signal weakening become serious problems, affecting the overall display effect.

[0006] 4. Limited light emission effect: Under the traditional circuit structure, a single lamp panel can usually only achieve a limited light emission state, which lacks flexibility and is difficult to meet the needs of diverse application scenarios.

[0007] Currently, there is a lack of LED string solutions on the market that do not rely on IC chips and can switch between multiple light-emitting states through multi-channel signal control, thereby simplifying the structure, reducing costs, and improving reliability while ensuring control flexibility. Utility Model Content

[0008] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-channel integrated control LED light string, which simplifies the light panel structure, reduces costs, and improves control flexibility and stability.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel integrated control LED light string, including a plug, a controller and multiple LED light panels, wherein the input end of the plug is connected to an AC power supply, the output end of the plug is connected to the controller, and the output end of the controller is connected to a first connecting line, a second connecting line and a third connecting line; The LED light panel includes a first and a second pad symmetrically arranged vertically, and a third and a fourth pad symmetrically arranged horizontally. The LED light panel is provided with a first LED chip, a second LED chip, a third LED chip, a fourth LED chip, a fifth LED chip, and a sixth LED chip. The anode and cathode of the first LED chip are respectively connected to the third pad and the first pad; the anode and cathode of the second LED chip are respectively connected to the first pad and the fourth pad; the anode and cathode of the third LED chip are respectively connected to the third pad and the second pad; the anode and cathode of the fourth LED chip are respectively connected to the fourth pad and the second pad; the anode and cathode of the fifth LED chip are respectively connected to the second pad and the first pad; and the anode and cathode of the sixth LED chip are respectively connected to the first pad and the second pad. The first connecting line is sequentially connected to each of the first pads, the second connecting line is sequentially connected to each of the third pads and each of the fourth pads, and the third connecting line is sequentially connected to each of the second pads; Each of the LED light panels is connected in series with each other via the first connecting line, the second connecting line and the third connecting line, which are parallel to each other; The controller switches the light-emitting states of the first LED chip, the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip, and the sixth LED chip by adjusting the signals on the first connection line, the second connection line, and the third connection line.

[0010] Furthermore, the first pad, the second pad, the third pad, and the fourth pad are each provided with a plurality of magnetic contacts. The first connecting line is magnetically connected to each of the first pads through each of the magnetic contacts. The second connecting line is magnetically connected to each of the third pads and the fourth pads through each of the magnetic contacts. The third connecting line is magnetically connected to each of the second pads through each of the magnetic contacts.

[0011] Furthermore, the LED light panel also integrates a bypass capacitor circuit, which includes a first bypass capacitor, a second bypass capacitor, a third bypass capacitor, a fourth bypass capacitor, a fifth bypass capacitor, and a sixth bypass capacitor. The first bypass capacitor is connected in parallel with the first LED chip, and the positive and negative terminals of the first bypass capacitor are respectively connected to the first pad and the third pad. The second bypass capacitor is connected in parallel with the second LED chip, and the positive and negative terminals of the second bypass capacitor are respectively connected to the fourth pad and the first pad. The third bypass capacitor is connected in parallel with the third LED chip, and the positive and negative terminals of the third bypass capacitor are respectively connected to the third pad and the second pad. The fourth bypass capacitor is connected in parallel with the fourth LED chip, and the positive and negative terminals of the fourth bypass capacitor are respectively connected to the second pad and the fourth pad. The fifth bypass capacitor is connected in parallel with the fifth LED chip, and the positive and negative terminals of the fifth bypass capacitor are respectively connected to the first pad and the second pad. The sixth bypass capacitor is connected in parallel with the sixth LED chip, and the positive and negative terminals of the sixth bypass capacitor are respectively connected to the second pad and the first pad.

[0012] Furthermore, each bypass capacitor in the bypass capacitor circuit is a surface-mount ceramic capacitor.

[0013] Furthermore, the LED light panel also integrates a thermal protection circuit, which is connected in series between the first connecting line and each of the first pads, and is used to disconnect when the temperature of the LED light panel rises abnormally.

[0014] Furthermore, the thermal protection circuit includes a PTC thermistor, a thermal fuse, or a temperature control switch.

[0015] Furthermore, the LED light panel uses a flexible circuit board as a flexible substrate, and each LED chip and each pad is soldered onto the flexible substrate. The flexible substrate is connected to three signal lines via a flexible flat cable.

[0016] The beneficial effects of this utility model are: (1) Through special circuit topology design, multiple light-emitting states of each LED panel can be controlled, eliminating the need to set IC chips inside the LED panel, reducing the number of components and improving reliability; (2) Eliminating the need for IC chips or single-lamp control modules reduces the overall manufacturing cost of the light string, while also reducing the stability risks associated with IC chips and enhancing the applicability of the light string in outdoor or complex environments; (3) The standardized three-way connection wiring method is adopted, which has a clear structure, is easy to extend the length of the light string, and is convenient for later maintenance; (4) By adjusting the combination of three electrical signals through the controller, the light-emitting mode can be flexibly switched to adapt to various usage scenarios such as festival lights and landscape lighting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the multi-channel integrated control LED light string in this utility model; Figure 2 This is a schematic diagram of the structure of the LED light panel in this utility model; Figure 3 This is a schematic diagram of the bypass capacitor circuit on the LED lamp panel in this utility model. Figure 4 This is a schematic diagram of the thermal protection circuit in the LED lamp panel.

[0018] Reference numerals: 1. Plug; 2. Controller; 21. First LED chip; 22. Second LED chip; 23. Third LED chip; 24. Fourth LED chip; 25. Fifth LED chip; 26. Sixth LED chip; 3. LED panel; 31. First pad; 32. Second pad; 33. Third pad; 34. Fourth pad; 4. First connecting wire; 5. Second connecting wire; 6. Third connecting wire; 7. Bypass capacitor circuit; 71. First bypass capacitor; 72. Second bypass capacitor; 73. Third bypass capacitor; 74. Fourth bypass capacitor; 75. Fifth bypass capacitor; 76. Sixth bypass capacitor; 8. Thermal protection circuit. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] Example 1, referring to Figures 1 to 2 This is the first embodiment of the present utility model. This embodiment provides a multi-channel integrated control LED light string, which can simplify the structure of the light panel, reduce costs, and improve control flexibility and stability. It includes a plug 1, a controller 2 and multiple LED light panels 3. The input end of the plug 1 is connected to an AC power supply, and the output end of the plug 1 is connected to the controller 2. The output end of the controller 2 is connected to a first connecting line 4, a second connecting line 5 and a third connecting line 6. The LED light panel 3 includes a first pad 31 and a second pad 32 arranged symmetrically on the top and bottom, and a third pad 33 and a fourth pad 34 arranged symmetrically on the left and right. The LED light panel 3 is provided with a first LED chip 21, a second LED chip 22, a third LED chip 23, a fourth LED chip 24, a fifth LED chip 25 and a sixth LED chip 26. The anode and cathode of the first LED chip 21 are connected to the third pad 33 and the first pad 31, respectively; the anode and cathode of the second LED chip 22 are connected to the first pad 31 and the fourth pad 34, respectively; the anode and cathode of the third LED chip 23 are connected to the third pad 33 and the second pad 32, respectively; the anode and cathode of the fourth LED chip 24 are connected to the fourth pad 34 and the second pad 32, respectively; the anode and cathode of the fifth LED chip 25 are connected to the second pad 32 and the first pad 31, respectively; and the anode and cathode of the sixth LED chip 26 are connected to the first pad 31 and the second pad 32, respectively. The first connecting line 4 is connected to each first pad 31 in sequence, the second connecting line 5 is connected to each third pad 33 and each fourth pad 34 in sequence, and the third connecting line 6 is connected to each second pad 32 in sequence. Each LED panel 3 is connected in series with each other via a first connecting line 4, a second connecting line 5, and a third connecting line 6 that are parallel to each other. The controller 2 switches the light-emitting state of the first LED chip 21, the second LED chip 22, the third LED chip 23, the fourth LED chip 24, the fifth LED chip 25 and the sixth LED chip 26 by adjusting the signals on the first connection line 4, the second connection line 5 and the third connection line 6.

[0021] Working principle of Example 1: The controller 2 has multiple output circuits inside. By adjusting the combination of voltage or current on the three connection lines, different potential relationships are formed for each pad, thereby controlling the conduction and extinguishing of different LED chips.

[0022] For example, when the controller 2 outputs a high potential to the third pad 33 (second connection line 5) and a low potential to the first pad 31 (first connection line 4), the first LED chip 21 is turned on and emits light. If a high potential is applied to the first pad 31 and a low potential is applied to the fourth pad 34, then the second LED chip 22 is turned on. Similarly, by adjusting the voltage difference between the second pad 32 and other pads, the on / off state of the third to sixth LED chips can be controlled.

[0023] This control method allows controller 2 to control the combined lighting state of the six LED chips in each light panel, eliminating the need for an IC chip for signal analysis inside each panel. This simplifies the structure and improves system reliability and control efficiency. This design is particularly suitable for applications requiring high precision in lighting control and stability of the light strings, such as festive lighting, architectural lighting, and outdoor advertising.

[0024] Preferably, each of the first pad 31, the second pad 32, the third pad 33, and the fourth pad 34 is provided with multiple magnetic contacts. The first connecting line 4 is magnetically connected to each of the first pads 31 through each magnetic contact. The second connecting line 5 is magnetically connected to each of the third pads 33 and the fourth pads 34 through each magnetic contact. The third connecting line 6 is magnetically connected to each of the second pads 32 through each magnetic contact.

[0025] Specifically, in this embodiment, the magnetic contacts are made of highly conductive magnetic metal material and have an anti-oxidation coating on the surface to ensure stable contact and conduction over a long period of time; the number and layout of the contacts are symmetrically distributed according to the shape of the pads, which not only ensures conductivity stability but also facilitates actual assembly and disassembly.

[0026] Magnetic contacts replace traditional soldering or pin connections. They automatically position and tightly adhere to the corresponding pads using magnetic force, ensuring reliable continuity between the three connection lines and the LED panel. The magnetic contact connection method also offers the following advantages: Improved assembly efficiency: The magnetic connection method allows for quick installation and removal of the lamp panel and connecting wires, making it suitable for mass production or modular design.

[0027] Easy maintenance and replacement: In case of failure, users can directly remove the faulty lamp panel for replacement without desoldering or replacing the entire cable.

[0028] Enhanced scalability and adaptability: Magnetic connections allow users to flexibly adjust the number of light panels or replace different functional light panels according to actual needs, enhancing the system's customization capabilities.

[0029] Example 2 is the second embodiment of this utility model. Unlike the previous embodiment, it refers to... Figure 3 This embodiment provides a bypass capacitor circuit 7, which can improve circuit stability and anti-interference ability, and ensure the stability of the light emission state of each LED chip during multi-channel switching. The LED lamp panel 3 also integrates a bypass capacitor circuit 7, which includes a first bypass capacitor 71, a second bypass capacitor 72, a third bypass capacitor 73, a fourth bypass capacitor 74, a fifth bypass capacitor 75, and a sixth bypass capacitor 76. The first bypass capacitor 71 is connected in parallel with the first LED chip 21, and the positive and negative terminals of the first bypass capacitor 71 are connected to the first pad 31 and the third pad 33, respectively. The second bypass capacitor 72 is connected in parallel with the second LED chip 22, and the positive and negative terminals of the second bypass capacitor 72 are connected to the fourth pad 34 and the first pad 31, respectively. The third bypass capacitor 73 is connected in parallel with the third LED chip 23, and the positive and negative terminals of the third bypass capacitor 73 are connected to the third pad 33 and the second pad 32, respectively. The fourth bypass capacitor 74 is connected in parallel with the fourth LED chip 24, and the positive and negative terminals of the fourth bypass capacitor 74 are connected to the second pad 32 and the fourth pad 34, respectively. The fifth bypass capacitor 75 is connected in parallel with the fifth LED chip 25, and the positive and negative terminals of the fifth bypass capacitor 75 are connected to the first pad 31 and the second pad 32, respectively. The sixth bypass capacitor 76 is connected in parallel with the sixth LED chip 26, and the positive and negative terminals of the sixth bypass capacitor 76 are connected to the second pad 32 and the first pad 31, respectively.

[0030] Preferably, all bypass capacitors in the bypass capacitor circuit 7 are surface-mount ceramic capacitors. Surface-mount ceramic capacitors are small in size, highly stable, and have a fast response speed, making them suitable for high-frequency switching circuits, facilitating automated assembly production, and effectively reducing costs.

[0031] Working principle of Example 2: During the operation of the LED light panel 3, the controller 2 applies different voltage combinations to each pad through three connection lines to control the conduction state of different LED chips. However, during frequent switching or high current transients, voltage fluctuations or high-frequency noise may occur, resulting in phenomena such as LED chip flickering, false triggering, or unstable brightness.

[0032] To suppress the above problems, the bypass capacitor connected in parallel to each LED chip will play a role in short-term energy storage and filtering. When the power supply voltage drops instantaneously, the bypass capacitor releases the stored energy to maintain the chip's operating voltage. When there are interference pulses or high-frequency noise in the circuit, the capacitor provides a low-impedance path for bypassing, effectively smoothing the voltage waveform, suppressing spike signals, and ensuring the stability of the LED chip's operation.

[0033] In addition, the synergistic effect of multiple bypass capacitors can enhance the anti-interference capability of the entire string light system, especially in multi-lamp cascade, long-distance wiring or complex outdoor environments.

[0034] Example 3, referring to Figure 4 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a thermal protection circuit 8, which can provide overheat protection for the LED light panel 3. The thermal protection circuit 8 is integrated on the LED light panel 3 and is connected in series between the first connecting line 4 and each of the first solder pads 31, used to disconnect when the temperature of the LED light panel 3 rises abnormally. Preferably, the thermal protection circuit 8 includes a PTC thermistor, a thermal fuse, or a temperature control switch.

[0035] Working principle of Example 3: When controller 2 controls multiple lamp panels via three connection lines, the first connection line 4 is responsible for supplying current to the anode or cathode paths of multiple LED chips. In certain special circumstances, such as poor ventilation and heat dissipation of the lamp panel, excessively high ambient temperature, LED chip failure, or abnormal series path, local temperature rise may occur.

[0036] at this time: If a PTC thermistor is used, its resistance will rise rapidly when the temperature reaches a critical value, which is equivalent to cutting off the current path and turning off the LED chip. If a thermal fuse is used, it will physically melt at high temperatures, completely disconnecting the circuit. The fuse needs to be replaced to restore the circuit. If a temperature control switch is used, the circuit will be automatically disconnected when the temperature is too high, and some models can automatically reset when the temperature returns to normal.

[0037] By introducing a thermal protection device into the main power supply path, the current path can be immediately interrupted at the initial stage of temperature anomalies, effectively protecting the lamp panel circuit and the chip itself from overheating damage. Introducing a temperature protection mechanism into a hardware driver structure without IC chips significantly reduces the risk of electrical accidents caused by overheating. It also prevents the chip from continuously operating under overheated conditions, thus avoiding performance degradation and effectively extending the lifespan of the LED chip and circuit. It maintains stability even when operating in high-temperature or outdoor exposure environments, making it suitable for harsh applications.

[0038] Preferably, the LED light panel 3 uses a flexible circuit board as a flexible substrate, and each LED chip and each pad is soldered onto the flexible substrate. The flexible substrate is connected to three signal lines via a flexible flat cable.

[0039] Specifically, in this embodiment, the flexible circuit board is made of polyimide (PI) or polyester (PET) material, which has good flexibility and high temperature resistance. Each LED chip, first to fourth pads 34, and other electronic components are mounted on the flexible circuit board using surface mount technology (SMT). The output end of the flexible circuit board is equipped with a flexible flat cable interface to connect three control signal lines. The flexible flat cable can be fixed by crimping, snap-fitting or soldering.

[0040] The LED light panel 3 uses a flexible circuit board as its substrate, making the electrical connections more compact and flexible. The three signal lines output from the controller 2 are transmitted to the flexible circuit board via flat cables, sequentially connecting to the first pad 31, the second pad 32, the third pad 33, and the fourth pad 34. These pads then connect to the respective LED chips, achieving multi-channel light emission control. The flexible substrate structure allows the entire light panel to adapt to curved, bent, or irregular mounting surfaces. The signal lines are distributed through internal conductive paths, ensuring consistency and reliability in chip control.

[0041] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A multi-channel integrated control LED light string, characterized in that: It includes a plug (1), a controller (2) and multiple LED light panels (3). The input end of the plug (1) is connected to an AC power source, and the output end of the plug (1) is connected to the controller (2). The output end of the controller (2) is connected to a first connecting line (4), a second connecting line (5) and a third connecting line (6). The LED light panel (3) includes a first pad (31) and a second pad (32) arranged symmetrically on the top and bottom, and a third pad (33) and a fourth pad (34) arranged symmetrically on the left and right. The LED light panel (3) is provided with a first LED chip (21), a second LED chip (22), a third LED chip (23), a fourth LED chip (24), a fifth LED chip (25), and a sixth LED chip (26). The anode and cathode of the first LED chip (21) are respectively connected to the third pad (33) and the first pad (31); the anode and cathode of the second LED chip (22) are respectively connected to the first pad (31) and the fourth pad (34); the anode and cathode of the third LED chip (23) are respectively connected to the third pad (33) and the second pad (32); the anode and cathode of the fourth LED chip (24) are respectively connected to the fourth pad (34) and the second pad (32); the anode and cathode of the fifth LED chip (25) are respectively connected to the second pad (32) and the first pad (31); and the anode and cathode of the sixth LED chip (26) are respectively connected to the first pad (31) and the second pad (32). The first connecting line (4) is connected to each of the first pads (31) in sequence, the second connecting line (5) is connected to each of the third pads (33) and the fourth pads (34) in sequence, and the third connecting line (6) is connected to each of the second pads (32) in sequence; Each of the LED light panels (3) is connected in series with each other via the first connecting line (4), the second connecting line (5) and the third connecting line (6) which are parallel to each other; The controller (2) switches the light-emitting states of the first LED chip (21), the second LED chip (22), the third LED chip (23), the fourth LED chip (24), the fifth LED chip (25), and the sixth LED chip (26) by adjusting the signals on the first connection line (4), the second connection line (5), and the third connection line (6).

2. The multi-channel integrated control LED light string according to claim 1, characterized in that: The first pad (31), the second pad (32), the third pad (33) and the fourth pad (34) are each provided with a plurality of magnetic contacts. The first connecting line (4) is magnetically connected to each of the first pads (31) through each of the magnetic contacts. The second connecting line (5) is magnetically connected to each of the third pads (33) and the fourth pads (34) through each of the magnetic contacts. The third connecting line (6) is magnetically connected to each of the second pads (32) through each of the magnetic contacts.

3. The multi-channel integrated control LED light string according to claim 1, characterized in that: The LED light panel (3) also integrates a bypass capacitor circuit (7), which includes a first bypass capacitor (71), a second bypass capacitor (72), a third bypass capacitor (73), a fourth bypass capacitor (74), a fifth bypass capacitor (75), and a sixth bypass capacitor (76). The first bypass capacitor (71) is connected in parallel with the first LED chip (21), and the positive and negative terminals of the first bypass capacitor (71) are connected to the first pad (31) and the third pad (33) respectively. The second bypass capacitor (72) is connected in parallel with the second LED chip (22), and the positive and negative terminals of the second bypass capacitor (72) are respectively connected to the fourth pad (34) and the first pad (31); The third bypass capacitor (73) is connected in parallel with the third LED chip (23), and the positive and negative terminals of the third bypass capacitor (73) are connected to the third pad (33) and the second pad (32) respectively. The fourth bypass capacitor (74) is connected in parallel with the fourth LED chip (24), and the positive and negative terminals of the fourth bypass capacitor (74) are respectively connected to the second pad (32) and the fourth pad (34); The fifth bypass capacitor (75) is connected in parallel with the fifth LED chip (25), and the positive and negative terminals of the fifth bypass capacitor (75) are connected to the first pad (31) and the second pad (32) respectively. The sixth bypass capacitor (76) is connected in parallel with the sixth LED chip (26), and the positive and negative terminals of the sixth bypass capacitor (76) are connected to the second pad (32) and the first pad (31), respectively.

4. The multi-channel integrated control LED light string according to claim 3, characterized in that: Each bypass capacitor in the bypass capacitor circuit (7) is a surface-mount ceramic capacitor.

5. The multi-channel integrated control LED light string according to claim 1, characterized in that: The LED lamp panel (3) is also integrated with a thermal protection circuit (8), which is connected in series between the first connecting line (4) and each of the first pads (31) and is used to disconnect when the temperature of the LED lamp panel (3) rises abnormally.

6. The multi-channel integrated control LED light string according to claim 5, characterized in that: The thermal protection circuit (8) includes a PTC thermistor, a thermal fuse, or a temperature control switch.

7. The multi-channel integrated control LED light string according to claim 1, characterized in that: The LED light panel (3) uses a flexible circuit board as a flexible substrate, and each LED chip and each pad is soldered onto the flexible substrate. The flexible substrate is connected to three signal lines through a flexible flat cable.

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