Super-long power supply LED light bar structure

Abstract

The utility model relates to the technical field of flexible LED light bars, in particular to a super-long power supply LED light bar structure, which comprises a flexible base material layer and a flexible circuit layer, and further comprises a power supply wire layer which is arranged on a first surface of the flexible base material layer and is insulated from the flexible circuit layer, and a plurality of parallel connection units which are connected in parallel with the power supply wire layer, the parallel connection unit comprises a plurality of LED lamp beads and a current management chip, a widened power supply layer is arranged on the second face of the flexible base material layer, and the widened power supply layer is electrically connected with the power supply line layer through a conductive via hole. Due to the design of widening the power supply layer, the power supply current and power of the lamp strip can be greatly improved, and more LED lamp beads can be driven to work, so that the length of the LED lamp strip is obviously increased, the brightness and power of all the LED lamp beads of the LED lamp strip can be reliably guaranteed under the control of constant current of the current management chip, and the service life of the LED lamp strip is prolonged. And uniform and reliable brightness of the manufactured lamp strip finished product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible LED light strips, in particular to an ultra-long power supply LED light strip structure. Background Art

[0002] Due to the advantages of LEDs such as rich colors, small size, environmental protection and energy saving, and long life, they are made into LED light strips and are widely used in the lighting projects of the outlines of iconic buildings, towers, bridges, parks and squares, and have a wider range of applications in places such as home decoration, windows, signs, and billboards.

[0003] However, in actual applications, it was found that due to problems with power supply and heat generation, the length of flexible light strips cannot be very long. Generally, 100 meters is close to the limit. If the light strip is made longer, a larger power supply power needs to be provided. Under the premise that the power supply voltage is not high, the current needs to be continuously increased. However, due to the existence of resistance in the circuit and the large number of LED lamp beads, when the length of the light strip exceeds 100 meters, the current supply is unstable and the LED brightness is uneven, which seriously affects the use effect of the light strip and has obvious defects. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an ultra-long power supply LED light strip structure with large length and stable power supply and light emission.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: an ultra-long power supply LED light strip structure, comprising a flexible substrate layer and a flexible circuit layer arranged on the first surface of the flexible substrate layer, and also comprising a power supply line layer arranged on the first surface of the flexible substrate layer and insulated from the flexible circuit layer, and a plurality of parallel connection units connected in parallel to the power supply line layer, the parallel connection unit comprising a plurality of LED lamp beads and a current management chip connected in series, the model of the current management chip is NU502, the negative end of the plurality of LED lamp beads connected in series is electrically connected to the positive line of the power supply line layer, the positive end of the plurality of LED lamp beads connected in series is electrically connected to the OPT end and the NC end of the current management chip, the positive end of the plurality of LED lamp beads connected in series is connected to a Zener diode and a resistor R2 and then electrically connected to the REXT end of the current management chip, the two ends of the Zener diode are respectively electrically connected to the OPT end and the GND end of the current management chip, the negative end of the plurality of LED lamp beads connected in series is connected to the resistor R1 and then electrically connected to the VDD end of the current management chip.

[0006] Preferably, the plurality of LED lamp beads are connected in series with a resistor R3, and the resistor R3 is located in the middle of the plurality of LED lamp beads connected in series.

[0007] Preferably, the flexible circuit layer includes a plurality of S-shaped segments arranged in the middle of the flexible substrate layer, the two ends of two adjacent S-shaped segments are staggered, and the two poles of the LED lamp bead are respectively welded to the staggered parts of the two ends.

[0008] Preferably, the width of the power supply line layer is greater than 3 mm, and the two power supply line layers for connecting the positive and negative electrodes are respectively close to two edges of the flexible substrate layer.

[0009] Preferably, a widened power supply layer is provided on the second surface of the flexible substrate layer, and the widened power supply layer is electrically connected to the power supply line layer through a conductive via.

[0010] Preferably, the width of the widened power supply layer is greater than 4.5 mm.

[0011] Preferably, the model of the voltage stabilizing diode is BZT52C20.

[0012] The beneficial effects of the present invention are as follows: the present invention provides an ultra-long power supply LED light strip structure, which is used in various flexible light strip products. Due to the design of the widened power supply layer, the power supply current and power of the light strip can be greatly improved, and more LED lamp beads can be driven to work, thereby significantly lengthening the length of the LED light strip. Under the constant current control of the current management chip, the brightness and power of all LED lamp beads in the LED light strip can be reliably guaranteed, ensuring that the brightness of the finished light strip is uniform and reliable. The present invention also uses a plurality of LED lamps to be first connected in series into a parallel unit, and then the parallel unit is connected in parallel to the power supply line layer. Even if a certain LED lamp bead is damaged, only the parallel unit in which it is located cannot emit light, and the other parallel units can still work normally, with high reliability. The widened power supply layer not only realizes the transmission of large current by increasing the width without increasing the thickness, but also ensures the flexibility and tensile strength of the LED light strip, with high structural strength and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of the front side of the super-long power supply LED light strip structure of the utility model.

[0014] Figure 2 This is a structural schematic diagram of the front side of the parallel connection unit in the ultra-long power supply LED light strip structure of the present invention.

[0015] Figure 3 This is a schematic diagram of the front structure of the super-long power supply LED light strip structure of the utility model when the parallel connection unit hides the LED lamp beads and the current management chip.

[0016] Figure 4 This is a structural schematic diagram of the reverse side of the parallel connection unit in the ultra-long power supply LED light strip structure of the present invention.

[0017] Figure 5 This is a schematic diagram of the circuit structure of the parallel connection units in the ultra-long power supply LED light strip structure of the present invention. DETAILED DESCRIPTION

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the embodiments. The contents mentioned in the embodiments are not intended to limit the present invention.

[0019] like Figures 1 to 5 As shown, an ultra-long power supply LED light strip structure includes a flexible substrate layer and a flexible circuit layer arranged on the first surface of the flexible substrate layer, and also includes a power supply line layer 1 arranged on the first surface of the flexible substrate layer and insulated from the flexible circuit layer, and multiple parallel connection units 2 connected in parallel to the power supply line layer 1, the parallel connection unit 2 includes multiple LED lamp beads 22 connected in series and a current management chip 21, the model of the current management chip 21 is NU502, the negative end of the multiple LED lamp beads 22 connected in series is electrically connected to the positive electrode line of the power supply line layer 1, and the positive end of the multiple LED lamp beads 22 connected in series is electrically connected to the positive electrode line of the power supply line layer 1. The OPT end and the NC end of the current management chip 21 are electrically connected, the positive end of multiple LED lamp beads 22 connected in series is connected to the voltage-stabilizing diode 23 and the resistor R2 and then electrically connected to the REXT end of the current management chip 21, the two ends of the voltage-stabilizing diode 23 are respectively electrically connected to the OPT end and the GND end of the current management chip 21, and the negative end of multiple LED lamp beads 22 connected in series is connected to the resistor R1 and then electrically connected to the VDD end of the current management chip 21; the second surface of the flexible substrate layer is provided with a widened power supply layer 3, and the widened power supply layer 3 is electrically connected to the power supply line layer 1 through a conductive via 25.

[0020] The ultra-long power supply LED light strip structure is used in various flexible light strip products. Due to the design of widening the power supply layer 3, the power supply current and power of the light strip can be greatly improved, and more LED lamp beads 22 can be driven to work, thereby significantly lengthening the length of the LED light strip. Under the constant current control of the current management chip 21, the brightness and power of all LED lamp beads 22 of the LED light strip can be reliably guaranteed, ensuring that the brightness of the finished light strip is uniform and reliable. The utility model also uses multiple LED lamps to be first connected in series to form a parallel unit 2, and then the parallel unit 2 is connected in parallel to the power supply line layer 1. Even if a certain LED lamp bead 22 is damaged, only the parallel unit 2 in which it is located will not be able to emit light, and the other parallel units 2 can still work normally, with high reliability; the model of the voltage regulator diode 23 is BZT52C20. The design of the voltage regulator diode 23 can stabilize the input voltage at around 20V, protecting the subsequent circuit from the influence of voltage fluctuations, and preventing damage to sensitive devices or other electronic components when the voltage exceeds 20V, with complete high reliability. The widening of the power supply layer 3 not only realizes the transmission of large current by increasing the width without increasing the thickness, but also ensures the flexibility and tensile strength of the LED light strip, with high structural strength and strong practicality.

[0021] In this embodiment, the plurality of LED lamp beads 22 are connected in series with a resistor R3, which is located in the middle of the plurality of LED lamp beads 22 connected in series to prevent damage to the LED lamp beads 22 when the instantaneous voltage or current is too large when the power is turned on, thereby increasing durability.

[0022] In this embodiment, the flexible circuit layer includes a plurality of S-shaped segments 26 arranged in the middle of the flexible substrate layer. The two ends of two adjacent S-shaped segments 26 are staggered, and the two poles of the LED lamp beads 22 are respectively welded to the staggered parts of the two ends. The circuit layout design of multiple S-shaped segments 26 is adopted, which realizes the series connection of multiple LED lamp beads 22 and greatly reduces the space occupied by the circuit layer when the LED lamp beads 22 are connected in series.

[0023] In this embodiment, the width of the power supply line layer 1 is greater than 3 mm, and the two power supply line layers 1 used to connect the positive and negative poles are respectively close to the two edges of the flexible substrate layer. On the one hand, the power load of the power supply line layer 1 is increased, and on the other hand, the tensile strength of the LED light strip structure is also increased, and the reliability is high.

[0024] In this embodiment, the width of the widened power supply layer 3 is greater than 4.5 mm. The design of the widened power supply layer 3 not only further improves the tensile strength of the LED light strip structure, but also realizes ultra-long distance power supply of the LED light strip structure by electrically connecting with each parallel unit 2. Even if the length of the LED light strip reaches 200 meters, it can still ensure stable power supply to each parallel unit 2, and it is highly practical.

[0025] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An ultra-long power supply LED light strip structure comprising a flexible substrate layer and a flexible circuit layer disposed on a first surface of the flexible substrate layer, characterized in that: The invention also includes a power supply line layer (1) arranged on the first surface of the flexible substrate layer and insulated from the flexible circuit layer, and a plurality of parallel connection units (2) connected in parallel to the power supply line layer (1), wherein the parallel connection unit (2) includes a current management chip (21) and a plurality of LED lamp beads (22) connected in series, the model of the current management chip (21) is NU502, the negative terminals of the plurality of LED lamp beads (22) connected in series are electrically connected to the positive line of the power supply line layer (1), the positive terminals of the plurality of LED lamp beads (22) connected in series are electrically connected to the OPT terminal and the NC terminal of the current management chip (21), and the plurality of The positive terminals of the LED lamp beads (22) connected in series are connected to the voltage-stabilizing diode (23) and the resistor R2, and then electrically connected to the REXT terminal of the current management chip (21); the two ends of the voltage-stabilizing diode (23) are respectively electrically connected to the OPT terminal and the GND terminal of the current management chip (21); the negative terminals of the multiple LED lamp beads (22) connected in series are connected to the resistor R1, and then electrically connected to the VDD terminal of the current management chip (21); and the second surface of the flexible substrate layer is provided with a widened power supply layer (3), and the widened power supply layer (3) is electrically connected to the power supply line layer (1) through a conductive via (25).

2. The ultra-long power supply LED light strip structure according to claim 1, characterized in that: The plurality of LED lamp beads (22) are connected in series with a resistor R3, and the resistor R3 is located in the middle of the plurality of LED lamp beads (22) connected in series.

3. The ultra-long power supply LED light strip structure according to claim 1, characterized in that: The flexible circuit layer comprises a plurality of S-shaped segments (26) arranged in the middle of the flexible substrate layer, the two ends of two adjacent S-shaped segments (26) are staggered, and the two poles of the LED lamp bead (22) are respectively welded to the staggered portions of the two ends.

4. The ultra-long power supply LED light strip structure according to claim 1, characterized in that: The width of the power supply line layer (1) is greater than 3 mm, and the two power supply line layers (1) for connecting the positive and negative electrodes are respectively close to the two edges of the flexible substrate layer.

5. The ultra-long power supply LED light strip structure according to claim 1, characterized in that: The width of the widened power supply layer (3) is greater than 4.5 mm.

6. The ultra-long power supply LED light strip structure according to claim 1, characterized in that: The model of the voltage stabilizing diode (23) is BZT52C20.

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