High light efficiency wide voltage constant current lamp strip

Abstract

The utility model discloses a high light efficiency wide pressure constant current lamp area, including flexible circuit board, and a plurality of groups LED lamp pearl array are electrically connected on the flexible circuit board, and is equipped with constant current IC module between two adjacent groups LED lamp pearl array and constant current IC module is electrically connected with the flexible circuit board, and LED lamp pearl array is constituted by one or more LED lamp pearls, and constant current IC module can realize constant current output in wide voltage input range, and constant current IC module is connected in series with LED lamp pearl array, and bears circuit through the flexible circuit board, and LED lamp pearl array realizes the illumination, and constant current IC module guarantees current stable under wide pressure, and constant current IC module can realize constant current output in 80~288V wide voltage input range, covers common low pressure and mains voltage, this makes lamp area not to need to equip special step -down transformer and can directly use in a variety of voltage environment, greatly reduces the equipment cost, and simplifies the installation process simultaneously, and reduces the security hidden danger that can be caused due to transformer failure.

Description

Technical Field

[0001] This utility model belongs to the field of LED strip technology, specifically relating to a high-efficiency wide-voltage constant current LED strip. Background Technology

[0002] With the rapid development of LED lighting technology, LED light strips have been widely used in many fields such as architectural decoration, home lighting, commercial display, and landscape lighting due to their advantages such as low energy consumption, long life, rich colors, and convenient installation.

[0003] Existing LED light strips have a narrow voltage adaptability range in practical applications. Most LED light strips on the market can only work within a specific low voltage range (such as 12V, 24V). If they need to be used in a higher voltage mains environment (such as 110V, 220V), a dedicated step-down transformer must be equipped. This not only increases equipment costs and installation complexity, but may also cause safety hazards due to transformer failure. Furthermore, the lack of a constant current control mechanism means that when the input voltage fluctuates, the current flowing through the LED beads changes accordingly, causing problems such as flickering and unstable brightness in the light strip. This seriously affects the lighting effect and visual experience, and also accelerates the aging of the LED beads, shortening their lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency, wide-voltage constant current lamp strip to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency wide-voltage constant current lamp strip, comprising:

[0006] A flexible circuit board, wherein multiple LED bead arrays are electrically connected to the flexible circuit board, and a constant current IC module is provided between two adjacent LED bead arrays and the constant current IC module is electrically connected to the flexible circuit board.

[0007] Preferably, the LED array consists of one or more LEDs;

[0008] Preferably, the constant current IC module can achieve constant current output within a wide voltage input range. The constant current IC module is connected in series with the LED lamp bead array, and the circuit is carried by a flexible circuit board. The LED lamp bead array provides illumination, and the constant current IC module ensures stable current under a wide voltage range, together forming the basic structure of a stable lighting strip.

[0009] Preferably, one end of the flexible circuit board is electrically connected to a live wire and a neutral wire, which are connected to an external AC power source to provide power input for the light strip.

[0010] Preferably, the output terminals of the constant current IC module are electrically connected to light-emitting diodes (LEDs). The LEDs can absorb reverse electromotive force and clamp peak voltages, protecting the constant current IC module and LED beads from high voltage damage.

[0011] Preferably, an AC-AC converter is provided at the electrical connection point between the live wire and the neutral wire and the flexible circuit board. This AC-AC converter transforms the AC input voltage into a low-voltage AC operating voltage, reducing the risk of electric shock and providing a suitable voltage for subsequent circuits.

[0012] Preferably, the flexible circuit board has a plurality of copper foil pads evenly distributed on it.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The constant current IC module can achieve constant current output within a wide voltage input range of 80 to 288V, covering common low voltage and mains voltages (such as 110V, 220V, etc.). This allows the light strip to be used directly in various voltage environments without the need for a dedicated step-down transformer, which greatly reduces equipment costs, simplifies the installation process, and reduces potential safety hazards caused by transformer failure.

[0015] (2) Through the control of the constant current IC module, even if the input voltage fluctuates, the current flowing through the LED lamp bead array can remain stable. This effectively avoids problems such as flickering and unstable brightness of the lamp strip, improves the lighting effect and visual experience, and at the same time reduces the damage of the LED lamp beads caused by current fluctuations, extending the life of the lamp strip.

[0016] (3) The AC-AC converter converts the AC input voltage into a low-voltage AC working voltage, further improving the safety of the LED strip during use and reducing the risk of high-voltage electric shock. At the same time, the reasonable configuration of components such as the constant current IC module also enhances the stability and reliability of the circuit. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a circuit diagram of Embodiment 1 of the present invention;

[0019] Figure 3 This is a circuit diagram of Embodiment 2 of the present invention.

[0020] In the diagram: 1. Flexible circuit board; 2. LED lamp bead array; 3. Constant current IC module; 4. Live wire; 5. Neutral wire; 6. Light-emitting diode; 7. AC-AC converter; 8. Positive electrode; 9. Negative electrode; 10. Copper foil pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] Example 1

[0024] This utility model provides, for example Figure 1-2 The high-efficiency wide-voltage constant current lamp strip shown includes:

[0025] The flexible circuit board 1 serves as the foundation for circuit connection and load bearing. Multiple LED lamp bead arrays 2 are electrically connected to the flexible circuit board 1. A constant current IC module 3 is provided between two adjacent LED lamp bead arrays 2 and is electrically connected to the flexible circuit board 1 to form a series circuit to realize current transmission.

[0026] The LED array 2 is composed of one or more LED beads, which can efficiently convert electrical energy into light energy to achieve stable lighting function;

[0027] The constant current IC module 3 has wide voltage adaptation and constant current control functions. It can automatically adapt to voltage changes and maintain constant current output through internal circuit adjustment mechanism within a wide voltage input range of 80 to 288V. The constant current IC module 3 is connected in series with the LED lamp bead array 2 to ensure the stability of the current flowing through the LED lamp bead array 2.

[0028] One end of the flexible circuit board 1 is electrically connected to a live wire 4 and a neutral wire 5 for connecting to an AC power source, providing power input to the entire light strip, and achieving effective connection with an external power supply system.

[0029] The output terminals of the constant current IC module 3 are electrically connected to light-emitting diodes 6. These light-emitting diodes 6 can absorb the reverse electromotive force generated by components such as inductors in the circuit, clamp the peak voltage within a safe range, and protect the constant current IC module 3 and the LED beads. At the same time, they can conduct in the forward direction when the input voltage is abnormal, resisting the risk of reverse high voltage breakdown.

[0030] An AC-AC converter 7 is provided at the electrical connection point between the live wire 4 and the neutral wire 5 and the flexible circuit board 1. This AC-AC converter 7 can convert the input AC voltage into a low-voltage AC working voltage, reduce the risk of high-voltage electric shock, improve the safety of the light strip during use, and provide a suitable voltage environment for subsequent circuits.

[0031] One end of the flexible circuit board 1 may be provided with a positive electrode 8 and a negative electrode 9 for connecting to a 3V to 50V DC power supply, adapting to DC power supply scenarios such as batteries and low-voltage adapters, realizing stable power supply under DC power supply, and broadening the application range of the light strip.

[0032] The flexible circuit board 1 has a number of copper foil pads 10 evenly distributed on it. Since the flexible circuit board 1 supports flexible cutting of the number of LEDs in a single channel, the uniform distribution of the copper foil pads 10 facilitates the reconnection or soldering of the circuit after cutting, ensuring that the cut branch can still maintain the integrity and stability of the circuit and not affect its normal operation.

[0033] This high-efficiency, wide-voltage constant-current LED strip connects to 80V-288V AC power via a live wire 4 and a neutral wire 5 connected to one end of a flexible circuit board 1. The input AC voltage is first converted into a low-voltage AC working voltage by an AC-AC converter 7, outputting stable DC voltages V+ and V- to power the subsequent LED branches. The processed voltage is then delivered to the flexible circuit board 1. On the flexible circuit board 1, multiple LED bead arrays 2 are connected in series with a constant-current IC module 3 (U1). After the current flows out from the power supply, it passes through the LED bead arrays 2 and the constant-current IC module 3 in sequence, forming a complete current loop. The constant-current IC module 3 is the core component for realizing the wide-voltage constant-current function. When the input voltage varies within the range of 80-288V, the constant-current IC module 3 automatically adjusts its impedance and other parameters through an internal circuit regulation mechanism to ensure that the current flowing through the LED bead arrays 2 in the series loop remains constant, regardless of the input voltage. Whether the current increases or decreases, the constant current IC module 3 can stabilize the current at the rated current value required for the normal operation of the LED beads, thereby ensuring the stable light emission of the LED beads. Under the drive of constant current, one or more LED beads in the LED bead array 2 convert electrical energy into light energy to realize the lighting function. At the same time, the light-emitting diode 6LED-N set at the output terminal of each constant current IC can absorb the reverse electromotive force of components such as inductors when the constant current IC module 3 (U1) is working in switching mode, clamping the peak voltage within the safe range and protecting the constant current IC module 3 (U1) and the LED beads. If an abnormal input voltage occurs (such as reverse connection), the light-emitting diode 6LED-N can still conduct in the forward direction to resist the risk of reverse high voltage breakdown. Moreover, the multi-channel design supports flexible cutting of the number of LEDs in a single channel (12 to 73 LED beads for high voltage). After cutting, the branch still operates independently and stably, ultimately achieving the high luminous efficiency and wide voltage constant current light strip driving function.

[0034] Example 2

[0035] like Figure 3 As shown, slightly different from Embodiment 1, one end of the flexible circuit board 1 is provided with a positive electrode 8 and a negative electrode 9;

[0036] This circuit is designed to accept external DC power supplies with inputs from 3V to 50V. The positive terminal 8 of the external DC power supply is connected to the positive terminal 8 of one end of the flexible circuit board 11, and the negative terminal 9 of the external DC power supply is connected to the negative terminal 9 of one end of the flexible circuit board 11 to provide power. The circuit adopts a three-way parallel architecture, with each path consisting of multiple LEDs connected in series (LED arrows indicate the direction of current flow and light emission). The ends of the series-connected LED branches are connected to the constant current IC module 3 (U1). During operation, the current feedback and regulation mechanism built into the constant current IC module 3 plays a crucial role, regardless of the fluctuation of the input voltage within the 3V to 50V range. If the number of LEDs in a branch changes due to cutting (within the design limits), the constant current IC module 3 will dynamically adjust the driving parameters to force the current flowing through the corresponding branch LEDs to remain constant, ensuring that the brightness of each LED is consistent and avoiding light decay or damage caused by uneven current. The three-way parallel design not only improves the overall brightness, but also achieves high reliability by ensuring that a single-way failure does not affect other branches through the "independent branch + independent constant current control" mode. Ultimately, the light strip can stably output high-efficiency lighting effects in a wide voltage range and flexible cutting scenarios (low voltage 1 to 24 LED beads).

[0037] like Figure 2 As shown, L (live wire 4) and N (neutral wire 5) are connected to 80V~288V AC power, and as... Figure 3 The circuit shown directly connects to a 3V~50V DC power supply. The core of the circuit is "low-voltage DC → constant current drive", omitting the AC to DC conversion stage. It is suitable for direct power supply scenarios such as batteries and low-voltage adapters, and can thus adapt to different application scenarios such as "low-voltage DC direct drive" and "high-voltage AC to DC + protection".

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency, wide-voltage constant current LED strip, characterized in that, include: A flexible circuit board (1) is electrically connected to multiple LED lamp bead arrays (2), and a constant current IC module (3) is provided between two adjacent LED lamp bead arrays (2) and the constant current IC module (3) is electrically connected to the flexible circuit board (1). The LED array (2) consists of one or more LED beads; The constant current IC module (3) can achieve constant current output within a wide voltage input range. The constant current IC module (3) is connected in series with the LED lamp bead array (2).

2. The high-efficiency wide-voltage constant current LED strip according to claim 1, characterized in that: One end of the flexible circuit board (1) is electrically connected to a live wire (4) and a neutral wire (5).

3. The high-efficiency wide-voltage constant current LED strip according to claim 1, characterized in that: The output terminals of the constant current IC module (3) are electrically connected to light-emitting diodes (6).

4. A high-efficiency wide-voltage constant current LED strip according to claim 2, characterized in that: An AC-AC converter (7) is provided at the electrical connection point between the live wire (4) and the neutral wire (5) and the flexible circuit board (1), through which the AC input voltage is converted into a low-voltage AC working voltage.

5. A high-efficiency wide-voltage constant current LED strip according to claim 1, characterized in that: The flexible circuit board (1) has several copper foil pads (10) evenly distributed on it.

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