A long-distance parallel DC power supply lamp string

Abstract

The utility model discloses a kind of direct current power supply lamp string of long-distance parallel convenient, including controller, multiple three-wire lamp string and multiple adapter disk structure.Each three-wire lamp string is composed of multiple series LED lamp beads, and the output end of controller is electrically connected with first-end three-wire lamp string.Adapter disk structure is arranged between adjacent three-wire lamp string, including multiple parallel adapter plug, solar panel, energy storage battery and charge-discharge management circuit.Solar panel converts light energy into electric energy, and charge-discharge management circuit charges energy storage battery, and controls energy storage battery to provide auxiliary direct current power to three-wire lamp string by adapter plug.The utility model improves the long-distance power supply stability of lamp string, reduces main power load, and has off-grid use ability, suitable for outdoor lighting and long-distance decoration scene.

Description

Technical Field

[0001] This utility model relates to the field of DC light string technology, and in particular to a DC power supply light string that is easy to connect in parallel over long distances. Background Technology

[0002] With the increasing emphasis on energy conservation and environmental protection, LED lights, due to their advantages such as high brightness, low power consumption, and long lifespan, are gradually becoming the primary choice for outdoor decoration, garden lighting, and festive lighting. In outdoor environments, long-distance wiring for LED strings is very common, making stable power supply over long distances a key issue in LED string applications.

[0003] Currently, most LED light strings on the market use two-wire or three-wire connection methods. Among them, three-wire connection light strings have better current carrying capacity, but they still face the following problems when deployed over long distances:

[0004] 1. Severe voltage attenuation: Traditional DC power supply methods suffer from significant voltage loss during transmission, especially when the LED string is long, resulting in insufficient brightness or even failure to light up the LEDs at the end.

[0005] 2. Limited power supply: Existing string light systems mainly rely on centralized power supplies, which are inflexible and cannot meet the installation needs of areas without power coverage.

[0006] 3. Lack of auxiliary power supply mechanism: When multiple light strings are used in cascade, there is a lack of effective relay or auxiliary power supply schemes, which limits the scalability and stability of the system.

[0007] 4. Complex connection: The connection interfaces between different segments of the light string are not uniform, making installation and maintenance complicated, resulting in poor reliability and hindering standardized mass production and deployment.

[0008] To address the aforementioned issues, there is an urgent need for a string light system that can be deployed over long distances, has a modular structure, and can provide auxiliary power supply, in order to improve the system's stability, scalability, and energy efficiency. Utility Model Content

[0009] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a DC power supply light string that is easy to connect in parallel over long distances, so as to improve the long-distance power supply stability of the light string and reduce the load on the main power supply.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a DC-powered light string that facilitates long-distance parallel connection, comprising:

[0011] Controller;

[0012] Multiple three-wire light strings, each of the three-wire light strings comprising multiple LED beads connected in series, and the output of the controller is electrically connected to one of the three-wire light strings at the beginning;

[0013] Multiple adapter panel structures, each of which is electrically connected between adjacent multiple three-wire lamp strings, the adapter panel structure comprising:

[0014] Multiple adapter plugs are arranged in parallel, and the adapter plugs are configured to be electrically connected to the multiple adjacent three-wire light strings respectively via pluggable electrical connectors;

[0015] Solar panels;

[0016] Energy storage batteries; and

[0017] Charge and discharge management circuit;

[0018] The output terminal of the solar panel is electrically connected to the input terminal of the charge / discharge management circuit, the charging terminal of the charge / discharge management circuit is electrically connected to the energy storage battery, and the discharging terminal of the charge / discharge management circuit is electrically connected to the plurality of parallel-connected adapter plugs.

[0019] The solar panel is used to convert light energy into electrical energy, and the charge and discharge management circuit is used to charge the energy storage battery with the electrical energy generated by the solar panel, and control the energy storage battery to provide DC power to the three-wire light string electrically connected to it through the adapter plug arranged in parallel.

[0020] Furthermore, the adapter structure also includes an anti-backflow module, which is connected between the solar panel and the energy storage battery to prevent the electrical energy of the energy storage battery from flowing back into the solar panel.

[0021] Furthermore, the adapter panel structure also includes a signal on / off switch, which is connected between the signal ground wires of two adjacent three-wire lamp strings to control the on / off state of the signal ground wires.

[0022] Furthermore, the adapter plate structure also includes a disc-shaped base and a mounting portion;

[0023] The solar panel is disposed on the upper surface of the disc-shaped substrate;

[0024] The mounting part is disposed on the lower surface of the disc-shaped base, and an accommodating space is formed inside the mounting part. The energy storage battery and the charging and discharging management circuit are disposed within the accommodating space.

[0025] Multiple adapter plugs are evenly spaced around the outer side wall of the mounting portion.

[0026] Furthermore, the bottom of the mounting part is evenly provided with three sets of adjustable feet along the circumference, each set of adjustable feet including:

[0027] A threaded telescopic rod, the top of which is hinged to the mounting part via a ball joint, the ball joint having a range of motion of ±30°;

[0028] The replaceable end cap can be detachably installed at the end of the threaded telescopic rod via a threaded connection.

[0029] A mechanical level bubble is embedded in the center of the lower surface of the mounting part for manual leveling.

[0030] Furthermore, the upper surface of the disc-shaped substrate is provided with:

[0031] Two arc-shaped slide rails are symmetrically arranged radially along the disc-shaped base;

[0032] The slider support frame has rollers at the bottom that slidably connect to the arc-shaped slide rail, and the solar panel is fixed at the top.

[0033] A manual locking knob passes through the slider support frame and engages with the arc-shaped slide rail thread to lock the pitch angle of the solar panel.

[0034] Furthermore, it also includes:

[0035] A gravity pendulum switch is disposed within the accommodating space of the mounting portion;

[0036] The circuit breaker spring is mechanically linked to the gravity pendulum.

[0037] When the disc-shaped base tilts more than 15°, the gravity pendulum pushes the circuit breaker spring to cut off the power supply circuit of the adapter plug.

[0038] The beneficial effects of this utility model are:

[0039] This utility model effectively alleviates the problem of insufficient end brightness caused by voltage attenuation during long-distance series connection of light strings by setting a transfer plate structure with energy storage battery and solar panel between adjacent light strings, thereby improving the stability of the overall lighting system.

[0040] This utility model adopts multiple parallel-connected adapter plugs and pluggable electrical connectors, which simplifies the electrical connection between each section of the light string, improves the ease of installation and the scalability of the system, and facilitates batch deployment and on-site maintenance.

[0041] Each adapter plate in this invention is equipped with a solar panel and a storage battery, and achieves local power supply through a charge and discharge management circuit. Even in the absence of a main power supply or in the event of a power outage, it can provide power to the light string through the storage battery, which enhances the reliability and environmental adaptability of the system. It can also make full use of solar energy for energy collection and storage, reduce dependence on traditional power systems, and help achieve green lighting and sustainable applications.

[0042] Furthermore, the structure of this utility model is applicable to various outdoor scenarios, including landscape lighting, garden decoration, and festival lighting, and is especially suitable for application environments with insufficient power coverage or where a large number of light strings need to be laid. Attached Figure Description

[0043] Figure 1 This is a circuit diagram of a DC-powered light string that is easy to connect in parallel over a long distance in this utility model;

[0044] Figure 2 This is a schematic diagram of the structure of the DC-powered lamp string that is easy to connect in parallel over long distances in this utility model;

[0045] Figure 3 This is a schematic diagram of the transfer plate structure in this utility model;

[0046] Figure 4 This is a schematic diagram of the adjustable support leg in this utility model;

[0047] Figure 5 This is a structural schematic diagram of the arc-shaped slide rail, slider support frame, and manual locking knob in this utility model.

[0048] Reference numerals: 1. Controller; 2. Three-wire LED string; 3. Adapter plate structure; 4. Adapter plug; 5. LED beads; 6. Solar panel; 7. Energy storage battery; 8. Charge and discharge management circuit; 9. Anti-backflow module; 10. Signal on / off switch; 11. Disc-shaped base; 12. Mounting part; 13. Threaded telescopic rod; 14. Replaceable end; 15. Mechanical level bubble; 16. Arc-shaped slide rail; 17. Slider support frame; 18. Manual locking knob. Detailed Implementation

[0049] 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.

[0050] Example 1, referring to Figures 1 to 2This is the first embodiment of the present invention, which provides a DC-powered light string that is easy to connect in parallel over long distances. It can improve the stability of long-distance power supply to the light string and reduce the load on the main power supply, including:

[0051] Controller 1;

[0052] Multiple three-wire light strings 2, each three-wire light string 2 includes multiple LED beads 5 connected in series, and the output of the controller 1 is electrically connected to one of the three-wire light strings 2 at the beginning to provide the main power supply voltage;

[0053] Multiple adapter panel structures 3, each adapter panel structure 3 being electrically connected between multiple adjacent three-wire lamp strings 2, the adapter panel structure 3 including:

[0054] Multiple adapter plugs 4 are arranged in parallel, and the adapter plugs 4 are configured to be electrically connected to their respective adjacent multiple three-wire light strings 2 via pluggable electrical connectors.

[0055] Solar panel 6;

[0056] Energy storage battery 7; and

[0057] Charge and discharge management circuit 8;

[0058] Among them, the output end of the solar panel 6 is electrically connected to the input end of the charge and discharge management circuit 8, the charging end of the charge and discharge management circuit 8 is electrically connected to the energy storage battery 7, and the discharging end of the charge and discharge management circuit 8 is electrically connected to multiple parallel adapter plugs 4.

[0059] The solar panel 6 is used to convert light energy into electrical energy. The charge and discharge management circuit 8 is used to charge the energy storage battery 7 with the electrical energy generated by the solar panel 6, and to control the energy storage battery 7 to provide DC power to the three-wire light string 2 that is electrically connected to it through the parallel adapter plug 4.

[0060] Working principle of Example 1:

[0061] In actual operation: Controller 1 supplies power to the first three-wire light string 2, driving the LED beads 5 connected in series inside to emit light; each three-wire light string 2 is electrically connected to the adjacent section through the adapter plug 4 to achieve a parallel structure; each adapter plate structure 3 collects light energy through its internal solar panel 6 under sufficient light conditions and converts it into DC power; the converted power is regulated by the charge and discharge management circuit 8 and then charges the energy storage battery 7 to store power; when the light conditions are insufficient or the output voltage of controller 1 decreases, the charge and discharge management circuit 8 controls the energy storage battery 7 to provide auxiliary DC power to the three-wire light string 2 connected to it through the adapter plug 4; the auxiliary DC power forms a local parallel power supply structure with the main power supply of controller 1 in the circuit, which enhances the power supply stability under long-distance transmission and prevents the LED beads from not lighting up due to insufficient voltage at the end.

[0062] Through the above structure and working method, this embodiment not only solves the problem of voltage attenuation in traditional light strings over long distances, but also realizes modularization and solar-assisted power supply, significantly improving the system's reliability, energy efficiency and application range.

[0063] Example 2 is the second embodiment of this utility model. Unlike the previous embodiment, this embodiment provides an anti-reverse current module 9 and a signal on / off switch 10, which can improve the stability, safety and control flexibility of the DC power supply light string. The adapter plate structure 3 also includes an anti-reverse current module 9, which is connected between the solar panel 6 and the energy storage battery 7 to prevent the electrical energy of the energy storage battery 7 from flowing back into the solar panel 6.

[0064] The adapter panel structure 3 also includes a signal on / off switch 10, which is connected between the signal ground wires of two adjacent three-wire lamp strings 2 and is used to control the on / off state of the signal ground wires.

[0065] Working principle of Example 2:

[0066] The anti-reverse current module 9 is used to establish a unidirectional current path between the solar panel 6 and the energy storage battery 7. It can take the form of a diode or an integrated anti-reverse current control chip to prevent the stored electrical energy in the energy storage battery 7 from flowing back into the solar panel 6 when it is not receiving charging voltage, thus avoiding energy waste or damage to the solar module. Its working principle is as follows: When there is sufficient sunlight, the solar panel 6 generates a DC voltage, which is conducted through the anti-reverse current module 9 to the charge and discharge management circuit 8 to charge the energy storage battery 7.

[0067] When there is insufficient sunlight, the output voltage of the solar panel 6 is 0, and the anti-reverse current module 9 blocks the return path to ensure that the electrical energy stored in the energy storage battery 7 will not flow to the solar panel 6 due to reverse voltage.

[0068] The signal on / off switch 10 is a manual or electronic control switch, with one end connected to the signal ground wire of the preceding three-wire light string 2 and the other end connected to the signal ground wire of the following three-wire light string 2.

[0069] The function of the signal on / off switch 10 is: when it is necessary to maintain a unified signal reference ground for the entire light string system, the signal on / off switch 10 is turned on to make the signal ground wire conduction, ensuring that the control signal of the controller 1 to the entire series light string remains consistent; when it is necessary to independently control or debug a certain section of the light string, or to prevent signal interference transmission, the signal on / off switch 10 can be turned off to achieve isolated control of the signal ground wire.

[0070] This architecture enhances the system's signal control flexibility and electrical isolation capabilities, making it suitable for large-scale, complex LED string network deployments.

[0071] By adding the anti-backflow module 9 and the signal on / off switch 10, the stability, safety and control flexibility of this embodiment are further improved. It has significant technical advantages, especially in situations where distributed power supply and signal propagation requirements are high (such as large-scale outdoor light shows and scenic area lighting).

[0072] Example 3, referring to Figure 3 This is the third embodiment of the present utility model. Unlike the previous embodiment, this embodiment provides a disc-shaped base 11, a mounting part 12 and three sets of adjustable feet, which can improve the environmental adaptability and installation convenience of the equipment. The adapter plate structure 3 also includes a disc-shaped base 11 and a mounting part 12.

[0073] The disc-shaped substrate 11 has an overall circular structure. A solar panel 6 is provided on the upper surface of the disc-shaped substrate 11 to receive natural light from different angles to the maximum extent and improve the solar energy conversion efficiency. The output end of the solar panel 6 is connected to the charge and discharge management circuit 8 provided in the mounting part 12 through the lead wire passing through the disc-shaped substrate 11.

[0074] The mounting part 12 is disposed on the lower surface of the disc-shaped base 11. An accommodating space is formed inside the mounting part 12. The energy storage battery 7 and the charging and discharging management circuit 8 are disposed in the accommodating space, effectively protecting them from the influence of the external environment.

[0075] Multiple adapter plugs are evenly spaced around the outer wall of the mounting part 12 and are plug-in connected to facilitate quick electrical connection with adjacent three-wire light strings 2. This circumferential distribution structure allows the adapter plate to serve as a central node and connect to light string units arranged in multiple directions, improving wiring flexibility and space utilization efficiency.

[0076] Preferred, refer to Figure 4 The bottom of the mounting section 12 is evenly provided with three sets of adjustable feet along the circumference. Each set of adjustable feet includes:

[0077] The threaded telescopic rod 13 has its top end hinged to the mounting part 12 via a ball joint. The ball joint has a range of motion of ±30°, which can adapt to uneven ground.

[0078] The replaceable end 14 can be detachably installed at the end of the threaded telescopic rod 13 via a threaded connection. Different materials (such as rubber pads, metal nail feet, etc.) can be selected according to the installation site to enhance adaptability.

[0079] A mechanical level bubble 15 is embedded in the center of the lower surface of the mounting part 12. It is used to manually adjust the height of the support legs to calibrate the overall level, ensuring that the solar panel 6 faces the optimal angle and improving power generation efficiency.

[0080] Working principle of Example 3:

[0081] In actual deployment, users can manually adjust the length and angle of the three adjustable legs according to the terrain to keep the entire adapter plate structure 3 horizontal, thereby ensuring the optimal light-receiving efficiency of the solar panel 6. At the same time, the ball joint structure and the design of the replaceable end cap 14 enable the system to be stably deployed in complex outdoor environments such as grass, slopes, and gravel.

[0082] The above structural design not only improves the equipment's environmental adaptability and ease of installation, but also ensures the safety of its electrical components and its overall service life.

[0083] Preferred, refer to Figure 5 The upper surface of the disc-shaped substrate 11 is provided with:

[0084] Two arc-shaped slide rails 16 are arranged radially symmetrically along the disc-shaped base 11 to form an adjustable guide rail structure, which is used to limit and guide the pitch movement trajectory of the solar panel 6.

[0085] The slider support frame 17 is slidably connected to the arc-shaped slide rail 16 at the bottom via rollers, and the solar panel 6 is fixed at the top, so that the solar panel 6 can adjust the tilt angle back and forth along the arc-shaped track.

[0086] The manual locking knob 18 passes through the slider support frame 17 and is threaded into the arc-shaped slide rail 16. It is used to mechanically lock the solar panel 6 after the user has completed the angle adjustment to prevent the angle from shifting due to wind or vibration.

[0087] Specifically, in this embodiment, the user can manually loosen the locking knob according to the latitude and seasonal changes of the actual installation location, slide the slider support frame 17 back and forth along the arc-shaped slide rail 16, thereby adjusting the pitch angle of the solar panel 6 to obtain the optimal solar radiation angle. After adjustment, tighten the locking knob to fix the angle and enhance the photoelectric conversion efficiency.

[0088] Preferred options also include:

[0089] The gravity pendulum switch (not shown) is located in the accommodating space within the mounting section 12. It is a mechanical gravity sensing device that normally points vertically to the ground.

[0090] The circuit breaker spring (not shown) is mechanically linked to the gravity pendulum.

[0091] When the disc-shaped base 11 tilts more than 15°, the gravity pendulum pushes the circuit breaker spring to cut off the power supply circuit of the adapter plug 4.

[0092] Specifically, in this embodiment, when the disc-shaped base 11 is kept horizontal or slightly tilted (within ±15°), the gravity pendulum remains stationary and does not trigger the circuit breaker spring, and the system power supply is normal.

[0093] When the tilt angle of the disc-shaped base 11 exceeds 15° due to abnormal conditions such as external impact, terrain collapse, or equipment overturning, the gravity pendulum will shift and trigger the circuit breaker spring, which will quickly disconnect the output circuit of the adapter plug 4 to prevent short circuits, electric shocks, or fires caused by continuous power supply under abnormal conditions. Once the system returns to horizontal, it can reconnect the power supply circuit and has a certain self-recovery capability.

[0094] 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 DC-powered light string that is easy to connect in parallel over long distances, characterized in that, include: Controller (1); Multiple three-wire light strings (2), each of the three-wire light strings (2) includes multiple LED beads (5) connected in series, and the output terminal of the controller (1) is electrically connected to one of the three-wire light strings (2) at the beginning; Multiple adapter panel structures (3), each of the adapter panel structures (3) being electrically connected between adjacent multiple three-wire light strings (2), the adapter panel structure (3) comprising: Multiple adapter plugs (4) are arranged in parallel, and the adapter plugs (4) are configured to be electrically connected to the multiple adjacent three-wire light strings (2) respectively via pluggable electrical connectors; Solar panels (6); Energy storage battery (7); and Charge and discharge management circuit (8); The output terminal of the solar panel (6) is electrically connected to the input terminal of the charge and discharge management circuit (8), the charging terminal of the charge and discharge management circuit (8) is electrically connected to the energy storage battery (7), and the discharging terminal of the charge and discharge management circuit (8) is electrically connected to the plurality of parallel-connected adapter plugs (4). The solar panel (6) is used to convert light energy into electrical energy. The charge and discharge management circuit (8) is used to charge the energy storage battery (7) with the electrical energy generated by the solar panel (6) and control the energy storage battery (7) to provide DC power to the three-wire light string (2) electrically connected to it through the adapter plug (4) set in parallel.

2. The DC-powered lamp string that is easy to connect in parallel over long distances according to claim 1, characterized in that: The adapter structure (3) also includes an anti-backflow module (9), which is connected between the solar panel (6) and the energy storage battery (7) to prevent the electrical energy of the energy storage battery (7) from flowing back into the solar panel (6).

3. The DC-powered lamp string that facilitates long-distance parallel connection according to claim 1 or 2, characterized in that: The adapter structure (3) also includes a signal on / off switch (10), which is connected between the signal ground wires of two adjacent three-wire lamp strings (2) and is used to control the on / off state of the signal ground wires.

4. The DC-powered lamp string that is easy to connect in parallel over long distances according to claim 3, characterized in that: The adapter plate structure (3) also includes a disc-shaped base (11) and a mounting part (12); The solar panel (6) is disposed on the upper surface of the disc-shaped substrate (11); The mounting part (12) is disposed on the lower surface of the disc-shaped base (11), and an accommodating space is formed inside the mounting part (12). The energy storage battery (7) and the charge and discharge management circuit (8) are disposed in the accommodating space. Multiple adapter plugs (4) are evenly spaced around the outer side wall of the mounting part (12).

5. The DC-powered lamp string that is easy to connect in parallel over long distances according to claim 4, characterized in that: The bottom of the mounting part (12) is evenly provided with three sets of adjustable feet along the circumference, each set of adjustable feet including: The threaded telescopic rod (13) has its top end hinged to the mounting part (12) via a ball joint, the ball joint having a range of motion of ±30°; Replaceable end (14) can be detachably installed at the end of the threaded telescopic rod (13) via a threaded connection; A mechanical level bubble (15) is embedded in the center of the lower surface of the mounting part (12) for manual leveling.

6. The DC-powered lamp string that is easy to connect in parallel over long distances according to claim 5, characterized in that: The upper surface of the disc-shaped substrate (11) is provided with: Two arc-shaped slide rails (16) are arranged symmetrically in the radial direction along the disc-shaped base (11); The slider support frame (17) is slidably connected to the arc-shaped slide rail (16) at the bottom via rollers, and the solar panel (6) is fixed at the top; A manual locking knob (18) passes through the slider support frame (17) and is threaded into the arc-shaped slide rail (16) to lock the pitch angle of the solar panel (6).

7. The DC-powered lamp string that is easy to connect in parallel over long distances according to claim 5, characterized in that: Also includes: The gravity pendulum switch is located in the accommodating space within the mounting part (12); The circuit breaker spring is mechanically linked to the gravity pendulum. When the disc-shaped base (11) tilts more than 15°, the gravity pendulum pushes the circuit breaker to cut off the power supply circuit of the adapter plug (4).

Images