High-voltage current-stabilizing lamp strip

Abstract

The utility model discloses a high-voltage steady-current lamp band, which comprises a light-transmitting layer, a flexible PCB (printed circuit board) and at least two groups of conductive wires, the light-transmitting layer is of a long-strip-shaped structure, the flexible PCB extends along the length direction of the light-transmitting layer, the conductive wires are arranged on the lower wall of the flexible PCB and are attached to the lower wall of the flexible PCB, the conductive wires consist of a plurality of strands of braided copper wires, the conductive wires are arranged at intervals, and the flexible PCB extends along the length direction of the light-transmitting layer. The light-transmitting layer is subjected to extrusion molding, and the flexible PCB and the conductive wires are wrapped in the light-transmitting layer; and the power supply end of the flexible PCB is provided with a control device. The flexible PCB comprises a substrate and an LED lamp, after the flexible PCB serves as a basic module to be produced, a conductive wire is welded or pasted to the lower wall of the flexible PCB, pins of the LED lamp are electrically connected with the conductive wire, and the conductive wire formed through weaving has the advantages that the flexibility is high, and winding storage or bending is convenient; 2, certain hardness and toughness are achieved, the lamp strip can be limited and supported, and abrasion and pulling of the flexible PCB are reduced;

Description

Technical Field

[0001] The utility model relates to the field of light strips, in particular to a high-voltage steady-current light strip. Background Art

[0002] Light strip is another name for light belt, which is a kind of lighting product in LED series. Existing light belt is generally powered by low voltage, but in actual outdoor lighting (such as decorative neon lights), due to the requirements of length and steady current, existing ones will also use high voltage power supply.

[0003] For example, Chinese patent CN202322435610.1 uses a circuit substrate for conduction, which correspondingly also produces the following problems: 1. The current stability is poor, that is, the longer the length, the greater the resistance; 2. The circuit substrate has a limited power-carrying area, so its resistance increases accordingly, and its temperature will also increase accordingly, affecting the stability of the LED lamp. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-voltage current-stabilizing light strip, aiming to improve the structure of the light strip, and at the same time improve the working stability of the light strip by improving the circuit structure.

[0005] To achieve the above purpose, the utility model provides a high-voltage constant-current light strip, comprising:

[0006] A light-transmitting layer, wherein the light-transmitting layer is a long strip structure;

[0007] A flexible PCB board, wherein the flexible PCB board extends along the length direction of the light-transmitting layer;

[0008] Conductive wires, the conductive wires are arranged at the lower wall of the flexible PCB and are in contact with the lower wall, the conductive wires are composed of multiple strands of braided copper wires, and the conductive wires are arranged in at least two groups at intervals,

[0009] The light-transmitting layer is extruded and molded, and the flexible PCB board and the conductive wire are wrapped therein;

[0010] The power supply end of the flexible PCB board is provided with a control device.

[0011] In the specific design, the flexible PCB board includes a substrate and an LED lamp. After it is produced as a basic module, the conductive wire is welded or pasted (such as resin) to the lower wall of the flexible PCB board, wherein the pins of the LED lamp are electrically connected to the conductive wire. The conductive wire formed by weaving has the following advantages: 1. It is relatively soft and easy to wind, store or bend; 2. It has a certain hardness and toughness, which can limit and support the light strip, reduce the wear and tear of the flexible PCB board, and improve the service life; 3. It reduces the on-resistance, reduces the heat of the light strip, and improves the stability of the on-current; 4. It can provide a larger voltage to ensure the use of the light strip over a longer distance. For example, in actual work, the product can withstand a voltage of 60v-240v through the control device and work stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is the circuit diagram of the control device.

[0014] In the figure,

[0015] 1 is a light-transmitting layer, 11 is a refractive lens,

[0016] 2 is a flexible PCB board, 21 is a substrate, 22 is an LED lamp,

[0017] 3 is a conductive wire,

[0018] 4 is a hollow chamber,

[0019] 5 is a light blocking layer, 51 is a light guiding surface,

[0020] 6 is a chip, and 61 is a ground terminal. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] like Figure 1 to Figure 2 As shown, a high-voltage constant-current light strip comprises:

[0025] A light-transmitting layer 1, wherein the light-transmitting layer 1 is a long strip structure;

[0026] A flexible PCB board 2, wherein the flexible PCB board 2 extends along the length direction of the light-transmitting layer 1;

[0027] Conductive wires 3, the conductive wires 3 are arranged at the lower wall of the flexible PCB board 2 and are attached to the lower wall thereof, the conductive wires 3 are composed of a plurality of braided copper wires, and the conductive wires 3 are arranged at least two groups at intervals,

[0028] The light-transmitting layer 1 is extruded and the flexible PCB board 2 and the conductive wire 3 are enclosed therein;

[0029] The power supply end of the flexible PCB board 2 is provided with a control device.

[0030] In a specific design, the flexible PCB board 2 includes a substrate 21 and an LED lamp 22. After the flexible PCB board 2 is produced as a basic module, the conductive wire 3 is welded or pasted (for example, resin) to the lower wall of the flexible PCB board 2, wherein the pins of the LED lamp 22 are electrically connected to the conductive wire 3. The conductive wire 3 formed by weaving has the following advantages: 1. It is relatively soft and convenient for winding, storage or bending; 2. It has a certain hardness and toughness, which can limit and support the light strip, reduce the wear and tear of the flexible PCB board 2, and improve the service life; 3. It reduces the on-resistance, reduces the heat generation of the light strip, and improves the stability of the on-current; 4. It can provide a larger voltage to ensure the use of the light strip over a longer distance. For example, in actual operation of the product, the control device can withstand a voltage of 60v-240v and work stably.

[0031] Specifically, the light-transmitting layer 1 is located above the flexible PCB board 2 and is provided with hollow chambers 4 distributed along the length direction of the light-transmitting layer 1. The hollow chambers 4 can facilitate the molding of the light-transmitting layer 1, while improving the heat dissipation effect of the light strip, thereby avoiding overheating that affects the service life of the LED lamp 22.

[0032] Specifically, the flexible PCB board 2 includes a substrate 21 and an LED lamp 22 .

[0033] Specifically, the upper wall, the rear wall and the lower wall of the light-transmitting layer 1 are covered with a light-blocking layer 5 , and the front wall of the light-transmitting layer 1 is provided with a light-guiding surface 51 .

[0034] In the embodiment of the utility model, an arc-shaped refractive lens 11 is provided between the flexible PCB board 2 and the hollow chamber 4, and irradiates the light toward the light guide surface 51. This structure can reduce the glare problem of the light strip, and effectively protect the conductive wire 3 and the flexible PCB board 2, that is, the sealing is better.

[0035] Specifically, the light-transmitting layer 1 and the light-blocking layer 5 are made of silicone material, wherein the light-transmitting layer 1 can be a transparent material, and the light-blocking layer 5 can be a white or other color material; the silicone material has the characteristics of high temperature resistance, corrosion resistance, deformation, and easy structure.

[0036] In the embodiment of the utility model, the control device includes a chip 6, and the chip 6 is provided with 8 pins. The first pin and the seventh pin of the chip 6 are respectively connected to the negative pole and the positive pole of the alternating current power supply.

[0037] The chip name is BP2373X,

[0038] The positive terminal of the LED light group is connected to the 6th pin, and the negative terminal of the LED light group is connected to the 5th pin;

[0039] An electrolytic capacitor C is connected in parallel between the positive terminal and the negative terminal of the LED lamp group.

[0040] The second, fourth and sixth pins of the chip are connected to the ground terminal 61.

[0041] A sampling resistor R is connected in series between the 4th pin of the chip and the ground terminal 61.

[0042] A capacitor C1 is connected in series between the sixth pin and the ground terminal 61.

[0043] An inductor L is connected in series between the fifth pin and the negative terminal of the LED lamp group.

[0044] In actual design, BP2373X is a high-precision non-isolated buck PFC LED driver chip with active power factor correction, designed for universal power supply and with constant current control. And BP2373X works in critical conduction mode, reducing switching losses and optimizing EMI.

[0045] BP2373X integrates rectifier bridge, freewheeling diode, VCC, COMP capacitor to simplify the external circuit. It adopts unique current detection technology, reduces external components and can achieve high-precision output current, and has good linear regulation and load regulation.

[0046] BP2373X has multiple protection functions to enhance system reliability, including LED short-circuit protection. In addition, BP2373X has an overheat regulation function to reduce the output current when the driver power supply is overheated to improve system reliability.

[0047] Specifically, the 4th pin of the chip BP2373X is the current sampling terminal (to obtain the current size to reduce overheating or overcurrent problems), the 4th pin is the internal high-voltage power tube drain, the 5th pin is the internal high-voltage power tube drain, and the 6th pin is the positive output terminal of the rectifier bridge.

[0048] Specifically, the voltage of the alternating current is 60v-240v.

[0049] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A high-voltage steady-current light strip, characterized in that: include: A light-transmitting layer, wherein the light-transmitting layer is a long strip structure; A flexible PCB board, wherein the flexible PCB board extends along the length direction of the light-transmitting layer; Conductive wires, the conductive wires are arranged at the lower wall of the flexible PCB and are in contact with the lower wall, the conductive wires are composed of multiple strands of braided copper wires, and the conductive wires are arranged in at least two groups at intervals, The light-transmitting layer is extruded and molded, and the flexible PCB board and the conductive wire are wrapped therein; The power supply end of the flexible PCB board is provided with a control device.

2. The high-voltage current-stabilizing light strip according to claim 1, characterized in that: The light-transmitting layer is located above the flexible PCB board and is provided with hollow chambers distributed along the length direction of the light-transmitting layer.

3. The high-voltage current-stabilizing light strip according to claim 1, characterized in that: The flexible PCB board includes a substrate and an LED lamp.

4. The high-voltage current-stabilizing light strip according to claim 2, characterized in that: The upper wall, the rear wall and the lower wall of the light-transmitting layer are covered with a light-blocking layer, and the front wall of the light-transmitting layer is provided with a light-guiding surface.

5. The high-voltage current-stabilizing light strip according to claim 4, characterized in that: An arc-shaped refractive lens is arranged between the flexible PCB board and the hollow chamber, and irradiates the light toward the light-guiding surface.

6. The high-voltage current-stabilizing light strip according to claim 4, characterized in that: The light-transmitting layer and the light-blocking layer are made of silicone material.

7. The high-voltage current-stabilizing light strip according to claim 3, characterized in that: The control device comprises a chip, and the chip is provided with 8 pins, and the first pin and the seventh pin of the chip are respectively connected to the negative pole and the positive pole of the power supply of the alternating current. The chip name is BP2373X, The positive terminal of the LED light group is connected to the 6th pin, and the negative terminal of the LED light group is connected to the 5th pin; An electrolytic capacitor C is connected in parallel between the positive terminal and the negative terminal of the LED lamp group. The 2nd, 4th and 6th pins of the chip are connected to the ground terminal. A sampling resistor R is connected in series between the 4th pin of the chip and the ground terminal. A capacitor C1 is connected in series between the sixth pin and the ground terminal. An inductor L is connected in series between the fifth pin and the negative terminal of the LED lamp group.

8. The high-voltage current-stabilizing light strip according to claim 7, characterized in that: The 4th pin of the chip BP2373X is the current sampling terminal, the 4th pin is the internal high-voltage power tube drain, the 5th pin is the internal high-voltage power tube drain, and the 6th pin is the positive output terminal of the rectifier bridge.

9. The high-voltage current-stabilizing light strip according to claim 7, characterized in that: The voltage of the alternating current is 60v-240v.

Images