LED string light connected to injection-molded plug with embedded control circuit

Abstract

Disclosed in the present invention is an LED string light connected to an injection-molded plug with an embedded control circuit, comprising an integrated injection-molded plug and a plurality of LEDs. The integrated injection-molded plug comprises a first plug, a second plug, a control circuit board and an output wire harness, the first plug being electrically connected to the control circuit board, the second plug being electrically connected to the control circuit board, and a head end of the output wire harness being electrically connected to an output end of the control circuit board. The first plug, the second plug, the control circuit board and the head end of the output wire harness are fixed and formed by means of injection molding of an insulating plastic material. The plurality of LEDs are connected by means of conductive wires insulated from each other to form an LED string light. The LED string light is independent of the control circuit board and is arranged in a winding mode. A positive electrode power supply end of the LED string light and a negative electrode power supply end of the LED string light are electrically connected to a tail end of the output wire harness. The present invention controls LEDs by means of output wire harnesses in integrated injection-molded plugs, thus greatly reducing product costs, and improving the appearance attractiveness and the waterproof effect of products.

Description

LED light string connected by injection molded plug with embedded control circuit Technical Field

[0001] The invention relates to the field of LEDs (Light Emitting Diodes), and in particular to an LED lamp string connected by an injection-molded plug embedded with a control circuit. Background Art

[0002] In order to reduce costs, improve product aesthetics, and enhance product waterproofing, there are currently two ways of combining the control circuit with the power supply, and there are also two ways of separating the control circuit from the power supply.

[0003] For example, the Chinese utility model patent "Infrared remote control integrated power supply and sealing shell" (authorization announcement number CN 208398024 U) discloses "a sealing shell for an infrared remote control integrated power supply", "including an opaque shell for assembling a circuit board with an infrared remote control receiver, and also including a transparent component, the opaque shell is provided with a light-transmitting hole corresponding to the infrared remote control receiver installed in the opaque shell, and after the light-transmitting component is adapted to the light-transmitting hole, the light-transmitting component forms a liquid seal with the light-transmitting hole", and has the characteristic of low cost.

[0004] A USB plug that meets the USB (Universal Serial Bus) interface standard can have a built-in control circuit and, when combined with a light string, can realize an LED light string with a USB control connector, as disclosed in the Chinese utility model patent "A Multifunctional USB Control Connector for LED Light Strings" (authorization announcement number CN 218599667 U). "The USB interface is used to plug in a power module. The USB connector also includes a shell. A circuit board is provided in the shell. The circuit board is conductively connected to the USB interface. The circuit board is provided with a switch control key and a function key. The circuit board is also connected to an audio module. The audio module is embedded in the shell. The function key is used to control the audio module." "The shell includes an upper shell and a lower shell. The upper shell and the lower shell are combined to form an installation cavity. The audio module and the circuit board are both embedded in the installation cavity. After the upper shell and the lower shell are combined, an interface groove is formed on one side. The interface groove is used to correspond to the USB interface. A light wire groove is provided on the other side. The light wire groove is used to cooperate with the wires of the LED light string."

[0005] The Chinese invention patent "Integrated Injection-Molded LED Lamp and Its Manufacturing Process" (Application Publication No. CN 116892715 A) discloses an integrated injection-molded LED lamp, which includes: a power supply and light source assembly consisting of a circuit board and LED illuminators mounted on the circuit board; and a wire assembly comprising a power cord, a plug and a socket disposed at each end of the power cord. "Using an integrated injection-molded power supply and light source assembly and power cord effectively improves the waterproof performance of the LED lamp, preventing short circuits or other safety issues caused by the ingress of rain or moisture." In the integrated injection-molded LED lamp disclosed in the Chinese invention patent "Integrated Injection-Molded LED Lamp and Its Manufacturing Process" (Application Publication No. CN116892715A), the LED illuminators are mounted on the circuit board, making it unsuitable for driving LED light strings connected by wires. This significantly limits the LED light string's use scenarios, making it impossible to wrap the LED light string around Christmas trees, silhouettes, or other background objects.

[0006] Sealing the power supply and control circuits in an integrated package reduces costs and improves their waterproofing, but this can affect the reception of control signals, such as those from infrared remote controls. Furthermore, the control circuits are located close to the switching power supply module, and the module's high-frequency signals can easily affect the control circuits. USB plugs that conform to USB interface standards require a combined upper and lower housing, which increases assembly costs and hinders high-level waterproofing.

[0007] Summary of the Invention

[0008] The purpose of the present invention is to provide an LED light string connected to an injection-molded plug embedded with a control circuit. By injection-molding the plug, control circuit, and wiring harness into an integrated injection-molded plug, the integrated injection-molded plug outputs a wiring harness to control the LED, thereby reducing product costs, improving product aesthetics, and improving product waterproofing.

[0009] An LED light string connected with an injection-molded plug embedded in a control circuit, the LED light string comprising:

[0010] One-piece injection-molded plug, several LEDs;

[0011] The one-piece injection-molded plug includes a first plug, a second plug, a control circuit board, and an output wiring harness. The first plug is electrically connected to the control circuit board as a positive power input terminal, the second plug is electrically connected to the control circuit board as a power ground terminal, and the head end of the output wiring harness is electrically connected to the output terminal of the control circuit board. The first plug, the second plug, the control circuit board, and the head end of the output wiring harness are fixedly formed by injection molding of an insulating plastic material.

[0012] The plurality of LEDs are connected in parallel, or in parallel first and then in series, or in series first and then in parallel, through mutually insulated wires to form an LED light string; the LED light string is independent of the control circuit board and arranged in a winding manner;

[0013] The positive power supply end of the LED light string and the negative power supply end of the LED light string are electrically connected to the tail end of the output wiring harness.

[0014] By winding, the LED light strings can be freely wound around the Christmas tree, the silhouette, and other background objects. It should be understood that the winding means that the LED light strings can be dynamically arranged, and the LED light strings can be straightened or wound around each other.

[0015] It should be understood that the plurality of LEDs may be ordinary LEDs comprising only light emitting diodes, or may be LED modules with an internally encapsulated control chip.

[0016] Preferably, the one-piece injection-molded plug is cylindrical in shape; as another solution, the one-piece injection-molded plug may be in the shape of a cuboid or a cube.

[0017] Preferably, the first plug and the second plug may be cylindrical or flat; the first plug may have the same specifications as the second plug or different specifications.

[0018] It should be understood that a portion of the first plug and the second plug are exposed outside the insulating plastic material and are used to connect to the power supply module.

[0019] Preferably, the one-piece injection-molded plug further includes a nut, which plays a role of reinforcement and waterproofing when the one-piece injection-molded plug is connected to the power supply module.

[0020] Preferably, the one-piece injection-molded plug is made into a male plug mode. Preferably, the one-piece injection-molded plug is circular; preferably, the head of the male plug mode is a hollow semicircle and includes a component to prevent reverse connection.

[0021] Preferably, the control circuit board includes a first socket and a second socket, the first plug is inserted into the first socket, and the second plug is inserted into the second socket. This structure avoids the welding process of the first plug and the second plug.

[0022] As another solution, the control circuit board includes a first jack and a second jack, the first plug includes a first elbow, and the second plug includes a second elbow. The first elbow is inserted into the first jack and secured by welding, while the second elbow is inserted into the second jack and secured by welding. This structure secures the first and second plugs to the control circuit board through welding.

[0023] Preferably, the control circuit board includes a remote control receiving module, and the control circuit board receives a control signal according to the remote control receiving module to control the output of the wiring harness.

[0024] Preferably, the remote control receiving module is an infrared receiving module, and the insulating plastic material is a light-transmitting material.

[0025] As another implementation solution, the remote control receiving module is a wireless radio frequency receiving module.

[0026] Preferably, the control circuit board includes a touch switch circuit that controls the output of the wiring harness based on a touch signal from the touch switch circuit. Preferably, the control circuit board includes a touch sensing circuit. The touch sensing circuit includes a sensing plate and a coil. The sensing plate is configured to sense changes in touch capacitance, and the coil is configured to receive touch signals generated by the sensing plate.

[0027] Preferably, the one-piece injection-molded plug is marked with a touch switch prompt mark at the touch signal receiving position. Preferably, a universal key pattern is marked on the one-piece injection-molded plug to prompt the user to touch the key position when using it, so that the user experience is the same as actual key pressing. As another implementation, the touch switch prompt mark can be on the surface of the one-piece injection-molded plug, or inside the one-piece injection-molded plug, or can be marked on the control circuit board.

[0028] Preferably, the insulating plastic material is a light-transmitting material, and the control circuit board includes a light-emitting diode for indicating the working status of the circuit.

[0029] Preferably, the output wiring harness includes a positive power supply terminal and a negative power supply terminal. Alternatively, the wiring harness may include a signal control output terminal. Alternatively, the control circuit board may load a control signal onto the positive power supply terminal and / or the negative power supply terminal, thereby simultaneously loading a power line carrier control signal while supplying power.

[0030] As another implementation, the control circuit board includes a touch button, the contacts of which are exposed outside the insulating plastic material. By exposing the contacts of the touch button, the user can select a function using the touch button. The user selects a function by pressing and then releasing the contacts of the touch button. Exposing the contacts of the touch button can meet the user's habit of using physical buttons and improve the user experience.

[0031] The present invention fixes the first plug, the second plug, the control circuit board and the head end of the output wiring harness by injection molding of an insulating plastic material, and controls the LED by an integrated injection-molded plug output wiring harness, thereby greatly reducing product cost, improving product aesthetics, and enhancing product waterproofing. Furthermore, the control circuit board is away from the power supply module, greatly reducing high-frequency interference of the power supply module and greatly improving the reliability of the control circuit of the control circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic diagram of an LED light string connected to an injection-molded plug embedded with a control circuit provided in an embodiment. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example

[0035] As shown in FIG1 , an LED light string 1 connected to an injection-molded plug embedded with a control circuit includes:

[0036] One-piece injection-molded plug 11, 4 LEDs: LED 12, LED 13, LED 14 and LED 15;

[0037] The one-piece injection-molded plug 11 includes a first plug 111, a second plug 112, a control circuit board 113 and an output wiring harness 114. The first plug 111 is electrically connected to the control circuit board 113 as the positive pole of the power input, the second plug 112 is electrically connected to the control circuit board 113 as the power ground, and the head end of the output wiring harness 114 is electrically connected to the output end of the control circuit board 113; the head ends of the first plug 111, the second plug 112, the control circuit board 113 and the output wiring harness 114 are fixed by injection molding of an insulating plastic material 115; the insulating plastic material 115 wraps the head ends of the first plug 111, the second plug 112, the control circuit board 113 and the output wiring harness 114. The first plug 111 and the second plug 112 are cylindrical, with the topmost part exposed outside the insulating plastic material 115 for connecting to the power supply module.

[0038] LED 12 , LED 13 , LED 14 and LED 15 are connected in parallel to form an LED light string; the positive power supply end of LED light string 1 and the negative power supply end of LED light string 1 are connected to the tail end of the output harness 114 .

[0039] In this embodiment, the integral injection-molded plug 11 is made into a male plug mode. The injection-molded plug 11 is circular and includes a reverse connection prevention member 116 on one side.

[0040] The control circuit board 113 includes a first jack 1131 and a second jack 1132. The first plug 111 includes a first elbow 1111, and the second plug 112 includes a second elbow 1121. The first elbow 1111 is inserted into the first jack 1131 and fixed by welding; the second elbow 1121 is inserted into the second jack 1131 and fixed by welding. In this structure, the first plug 111, the second plug 112 and the control circuit board 113 are firmly welded through welding.

[0041] In this embodiment, a microcontroller 1133 is soldered onto the control circuit board 113. The power supply of the microcontroller 1133 is connected to the first plug 111 via an onboard connection on the control circuit board 113. The ground of the microcontroller 1133 is connected to the second plug 112 via an onboard connection on the control circuit board 113. An NMOS 1134 is soldered onto the control circuit board 113. The output of the microcontroller 1133 is connected to the gate of the NMOS 1134. The source of the NMOS 1134 is connected to the second plug 112 via an onboard connection on the control circuit board 113.

[0042] The output harness 114 includes two wires, a positive wire 1141 and a negative wire 1142 . The positive wire 1141 is connected to the first plug 111 by the on-board connection of the control circuit board 113, and the negative wire 1142 is connected to the drain of the NMOS by the on-board connection of the control circuit board 113.

[0043] By running the program on the single chip microcomputer 1133, the four LEDs (LED 12, LED 13, LED 14 and LED 15) can be controlled to be fully bright, fully dark, or at a certain brightness level.

[0044] In this embodiment, the first plug 111, the second plug 112, the control circuit board 113 and the head ends of the output wire harness 114 are injection molded and fixed with insulating plastic materials to form an integrated injection molded plug 11, and the output wire harness 114 controls the LED 12, LED 13, LED 14 and LED 15, which greatly reduces the product cost, improves the aesthetics of the product, and improves the waterproof effect of the product.

Claims

1. An LED light string connected by an injection-molded plug embedded with a control circuit, characterized in that: The LED light string comprises: One-piece injection-molded plug, several LEDs; The one-piece injection-molded plug comprises a first plug, a second plug, a control circuit board and an output wiring harness, wherein the first plug is electrically connected to the control circuit board as a positive pole of a power input, the second plug is electrically connected to the control circuit board as a power ground, and the head end of the output wiring harness is electrically connected to the output end of the control circuit board; the first plug, the second plug, the control circuit board and the head end of the output wiring harness are fixedly formed by injection molding of an insulating plastic material; The plurality of LEDs are connected in parallel, or in parallel first and then in series, or in series first and then in parallel, through mutually insulated wires to form an LED light string; the LED light string is independent of the control circuit board and is arranged in a winding manner; The positive power supply end of the LED light string and the negative power supply end of the LED light string are electrically connected to the tail end of the output wiring harness.

2. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 1, characterized in that: The one-piece injection-molded plug includes a nut.

3. The LED light string connected by injection-molded plugs embedded with a control circuit as claimed in claim 1, characterized in that: The control circuit board comprises a first socket and a second socket, the first plug is inserted into the first socket, and the second plug is inserted into the second socket.

4. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 1, characterized in that: The control circuit board includes a first jack and a second jack, the first plug includes a first elbow, and the second plug includes a second elbow; the first elbow is inserted into the first jack and fixed by welding; the second elbow is inserted into the second jack and fixed by welding.

5. The LED light string connected by an injection-molded plug embedded with a control circuit as claimed in any one of claims 1 to 4, characterized in that: The control circuit board includes a remote control receiving module, and the control circuit board receives a control signal according to the remote control receiving module to control the output of the output harness.

6. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 5, characterized in that: The remote control receiving module is an infrared receiving module.

7. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 5, characterized in that: The remote control receiving module is a wireless radio frequency receiving module.

8. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 1, characterized in that: The control circuit board includes a touch switch circuit, and the touch switch circuit controls the output of the wiring harness according to a touch signal.

9. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 8, characterized in that: The one-piece injection-molded plug is marked with a touch switch prompt mark at the touch signal receiving position.

10. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 1, characterized in that: The insulating plastic material is a light-transmitting material, and the control circuit board includes a light-emitting diode.

11. The LED light string connected by injection-molded plugs with embedded control circuit as claimed in claim 1, characterized in that: The control circuit board comprises a light touch button, and the contact of the light touch button is exposed outside the insulating plastic material.

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