High-voltage diffuse reflection LED (light-emitting diode) flexible lamp strip with double-layer complementary circuit

Abstract

The utility model is applicable to the technical field of LED (light-emitting diode) soft lamp strips, and provides a high-voltage diffuse reflection LED soft lamp strip with a double-layer complementary circuit, which comprises LED lamp beads and an LED optical lens, and further comprises a flexible diaphragm, a plurality of groups of through holes, and a plurality of LED light sources, the front circuit is adhered to one side of the flexible diaphragm, an upper solder mask is attached to the front circuit, a plurality of groups of bonding pads are arranged on the upper solder mask, and part of the bonding pads coincide with the positions of the via holes; the back circuit is adhered to the other side of the flexible diaphragm, and a lower insulating layer is adhered to the back circuit; and the alternating current conversion module is connected with the alternating current circuit, one end of one side of the alternating current conversion module is installed in the via hole, the other end of one side is welded on the bonding pad, and the other side is welded on the back circuit. According to the utility model, the double-layer circuit design is adopted, so that the soft lamp strip can be directly connected with high-voltage alternating current, the use cost of a switching power supply is reduced, the LED soft lamp strip can meet more bank lamp requirements and lighting uniformity, and a better effect can be achieved with lower cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED flexible light strips, and particularly relates to a high-voltage diffused reflection LED flexible light strip with double-layer complementary circuits. Background Technique

[0002] An LED flexible light strip refers to assembling LEDs on a strip-shaped FPC (flexible printed circuit board) or a rigid PCB. The LED flexible light strip has gradually emerged in various decoration industries due to its long service life, energy conservation, and environmental protection characteristics. With the popularization of LED light sources, the market has more requirements and ideas for the application and shaping of LED light sources in various environments. The LED flexible light strip that is convenient to bend and shape and can achieve long-distance power supply replenishment well meets the needs.

[0003] Existing flexible LED light strips are generally low-voltage light strips, and a separate switching power supply needs to be purchased to convert high voltage to low voltage to ensure the safe use of the light strip. When connecting a large number of light strips, considering the current carrying capacity of the circuit, additional wires need to be connected to meet the demand for a large current. Both the switching power supply and the additional wires connected will lead to an increase in cost. Conventional high-voltage rigid light bars, due to the hardness limitation of the light bars, many shapes cannot be satisfied, the light uniformity will be seriously affected, and the manufacturing cost will be higher than that of LED flexible light strips. Therefore, in view of the above status quo, the utility model proposes a high-voltage diffused reflection LED flexible light strip with double-layer complementary circuits. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-voltage diffused reflection LED flexible light strip with double-layer complementary circuits, aiming to solve the problems raised in the above background technique.

[0005] The embodiment of the utility model is implemented as follows. A high-voltage diffused reflection LED flexible light strip with double-layer complementary circuits includes LED lamp beads and LED optical lenses, and further includes:

[0006] A flexible diaphragm, on which a plurality of groups of through holes are provided;

[0007] A front circuit, which is adhesively bonded to one side of the flexible diaphragm through a colloid, and a layer of solder mask is coated on the front circuit through an adhesive. A plurality of groups of pads are provided on the solder mask, and the pads are used to realize the welding of each component to the LED flexible light strip. The positions of some of the pads coincide with the positions of the through holes, and wiring pads are installed within the coincidence positions, and the wiring pads are externally connected to an AC power supply;

[0008] A back circuit, which is adhesively bonded to the other side of the flexible diaphragm through a colloid, and a lower insulating layer is adhesively bonded to the back circuit through a colloid;

[0009] AC conversion module, one end of one side of the AC conversion module is installed in the via hole, the other end of one side of the AC conversion module is soldered on the pad by metallic tin, and the other side of the AC conversion module is soldered on the back circuit by metallic tin; the AC conversion module is connected to the high-voltage AC circuit and is used to supply the converted low-voltage direct current to the LED flexible light strip.

[0010] Furthermore, the front circuit is mainly used for the series-parallel circuit of the LED lamp beads after high-voltage to low-voltage conversion, and the back circuit is used for the main line accessing the high-voltage AC circuit.

[0011] Furthermore, the materials of the front circuit and the back circuit are both metallic copper foil or copper-aluminum composite material.

[0012] Furthermore, the overall shapes of the flexible diaphragm, the upper solder mask and the lower insulating layer are the same.

[0013] Furthermore, the flexible diaphragm, the upper solder mask and the lower insulating layer are all made of PI or PET material.

[0014] Furthermore, it further includes a patch terminal. The patch terminal is soldered at the overlapping position of the pad and the via hole by metallic tin, and the patch terminal is connected to the AC circuit.

[0015] Furthermore, an adhesive is pasted on the back of the lower insulating layer. The adhesive is made of a heat-conductive colloid and is used to bond the LED flexible light strip on the entity surface.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model adopts a double-layer circuit design. One layer of the circuit serves as the DC circuit of the LED flexible light strip as a whole, and the other layer of the circuit provides high-voltage AC power for the LED flexible light strip as a whole, enabling the flexible light strip to be directly connected to high-voltage alternating current, reducing the usage cost of the switching power supply. Moreover, compared with the rigid light strip, the LED flexible light strip has the advantage of being easier to bend and arrange, meeting more requirements for row lights and light uniformity, and achieving better effects at lower costs. Description of the Drawings

[0018] Figure 1 It is a top view structural schematic diagram of a high-voltage diffused reflection LED flexible light strip with double-layer complementary circuits.

[0019] Figure 2 It is a side view structural schematic diagram of a high-voltage diffused reflection LED flexible light strip with double-layer complementary circuits.

[0020] Figure 3 It is a complementary installation schematic diagram of a high-voltage diffused reflection LED flexible light strip with double-layer complementary circuits.

[0021] In the figure: 1 - flexible diaphragm, 2 - front circuit, 3 - back circuit, 4 - via hole, 5 - back adhesive, 6 - LED lamp bead, 7 - LED optical lens, 8 - AC conversion module, 9 - surface mount terminal, 10 - insulation protection case, 11 - upper solder mask, 12 - pad, 13 - lower insulation layer, 14 - wiring pad. Detailed implementation mode

[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] The following describes in detail the specific implementation of the present utility model in combination with specific embodiments.

[0024] As Figures 1-3 shown, a high-voltage diffuse reflection LED flexible strip with double-layer complementary circuits provided by an embodiment of the present utility model includes:

[0025] A flexible diaphragm 1, which is used to isolate the front DC circuit and the back AC circuit of the LED flexible strip to protect the circuit safety. A plurality of groups of via holes 4 are provided on the flexible diaphragm 1;

[0026] A front circuit 2, which is used to connect the DC circuit of the LED flexible strip to ensure the normal operation of the LED lamp beads 6. The front circuit 2 is adhesively bonded to one side of the flexible diaphragm 1 through a colloid, and an upper solder mask 11 is adhered to the front circuit 2 through an adhesive. The upper solder mask 11 is used to isolate the top circuit of the LED flexible strip from the outside to avoid electric leakage. A plurality of groups of pads 12 are provided on the upper solder mask 11. The pads 12 are used to realize the welding of each component to the LED flexible strip. The positions of some of the pads 12 coincide with the positions of the via holes 4, and wiring pads 14 are installed within the coincident positions. The wiring pads 14 are externally connected to an AC power supply;

[0027] A back circuit 3, which is used to connect the AC circuit to ensure that each node of the LED flexible strip has an input current. The back circuit 3 is adhesively bonded to the other side of the flexible diaphragm 1 through a colloid. A lower insulation layer 13 is adhesively bonded to the back circuit 3 through a colloid. The lower insulation layer 13 is used to ensure that the back circuit 3 does not contact the outside and ensure the circuit safety; A back adhesive 5 is adhered to the back of the lower insulation layer 13. The back adhesive 5 is made of a colloid with good thermal conductivity. The back adhesive 5 is used to bond the LED flexible strip to the surface of the entity to ensure the connection between the LED flexible strip and the entity in use, and the connection is stable without shaking. The back adhesive 5 can also be double-sided acrylic.

[0028] The AC conversion module 8, one end of one side of the AC conversion module 8 is installed in the via hole 4, the other end of one side of the AC conversion module 8 is soldered on the pad 12 by metallic tin, and the other side of the AC conversion module 8 is soldered on the back circuit 3 by metallic tin, ensuring that the alternating current can be timely converted into stable direct current; the AC conversion module 8 is connected to the high-voltage AC circuit and is used to supply the converted low-voltage direct current to the LED flexible strip light. The AC voltage conversion module 8 can adjust the current of the LED flexible strip light;

[0029] The LED lamp beads 6 are soldered on the pad 12 by metallic tin, and the LED lamp beads 6 are used for the LED flexible strip light to convert electrical energy into light energy;

[0030] The LED optical lens 7 is pasted and covered on the LED lamp beads 6 by fixing glue. The LED optical lens 7 is used to adjust the light-emitting angle of the LED lamp beads 6, increase the light-emitting angle of the LED flexible strip light, and make the light projection more uniform;

[0031] The patch terminal 9 is soldered at the overlapping position of the pad 12 and the via hole 4 by metallic tin, and the patch terminal 9 is connected to the high-voltage AC circuit;

[0032] The insulating protection shell 10 is used to isolate the high-voltage alternating current and protect the safe use of the LED flexible strip light.

[0033] In the embodiment of the present utility model, the pad 12 is opened on the solder mask 11 by means of roll cutting or drilling.

[0034] The via hole 4 is opened on the flexible diaphragm 1 by means of roll cutting or drilling, and the position of the via hole 4 overlaps with the position of part of the pads 12.

[0035] As Figures 1-3 shown, as a preferred embodiment of the present utility model, the front circuit is mainly used for the series-parallel circuit of the LED lamp beads after high-voltage to low-voltage conversion, and the back circuit is used for the main line to access the high-voltage AC circuit. The overall shapes of the flexible diaphragm 1, the solder mask 11 and the lower insulating layer 13 are the same. The edges of the entire strip light are in a shape of concave and convex staggered, and the concave and convex positions of any two strip lights completely coincide, forming a complementary relationship.

[0036] In this embodiment, through the concave-convex staggered shape design, it is convenient to bend the strip light on the plane. The LED lamp beads 6, the AC conversion module 8, the patch terminal 9, and the LED optical lens 7 are arranged at the convex positions, so that the material utilization rate of the LED flexible strip light is greatly improved and the function of convenient bending is realized. Except for the LED lamp beads 6, the AC conversion module 8, the patch terminal 9, and the LED optical lens 7, the number of LED flexible strip lights that can be made on the material with the same area can be increased by about one time, greatly reducing the product cost.

[0037] The front circuit 2 and the back circuit 3 are formed by removing the unnecessary parts through die cutting or etching. The width of the remaining circuit parts is at the narrow position of the inner concave of the outer shape. Except for the reserved safety margins on both sides, the maximum width is left as much as possible.

[0038] The materials of the front circuit 2 and the back circuit 3 are both metal copper foils, and copper-aluminum composite materials can also be used.

[0039] The flexible diaphragm 1, the upper solder resist film 11 and the lower insulating layer 13 are all made of PI materials, and PET materials can also be used.

[0040] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent.

Claims

1. A high-voltage diffuse reflection LED soft light strip with double-layer complementary circuits, comprising LED lamp beads and LED optical lenses, characterized in that: Also includes: A flexible diaphragm, wherein a plurality of groups of via holes are formed on the flexible diaphragm; A front circuit, wherein the front circuit is bonded to one side of the flexible diaphragm through a colloid, and the front circuit is covered with an upper solder resist film through an adhesive sticker, and the upper solder resist film is provided with a plurality of pads, and the pads are used to realize the welding of various components and the LED soft light strip, and the positions of some of the pads coincide with the positions of the via holes, and a wiring pad is installed in the overlapping position, and the wiring pad is externally connected to an AC power supply; A back circuit, wherein the back circuit is bonded to the other side of the flexible diaphragm through colloid, and a lower insulating layer is bonded to the back circuit through colloid; An AC conversion module, one end of one side of the AC conversion module is installed in a via hole, the other end of one side of the AC conversion module is soldered to a pad by metal tin, and the other side of the AC conversion module is soldered to a back circuit by metal tin; the AC conversion module is connected to a high-voltage AC circuit to supply the converted low-voltage DC power to an LED soft light strip.

2. The high-voltage diffuse reflection LED soft light strip with double-layer complementary circuits according to claim 1, characterized in that: The front circuit is used for the series and parallel circuit of the LED lamp beads after the high voltage is converted to low voltage, and the back circuit is used for accessing the main line of the high voltage AC circuit.

3. The high-voltage diffuse reflection LED soft light strip with double-layer complementary circuits according to claim 2, characterized in that: The materials of the front circuit and the back circuit are both metal copper foil or copper-aluminum composite material.

4. The high-voltage diffuse reflection LED soft light strip with double-layer complementary circuits according to claim 1, characterized in that: The flexible membrane, the upper solder resist film and the lower insulating layer have consistent overall appearances.

5. The high-voltage diffuse reflection LED soft light strip with double-layer complementary circuits according to claim 4, characterized in that: The flexible membrane, the upper solder resist film and the lower insulating layer are all made of PI or PET.

6. The high-voltage diffuse reflection LED soft light strip with double-layer complementary circuits according to claim 1, characterized in that: It also includes a patch terminal, which is soldered to the overlapping position of the pad and the via hole through metal tin, and the patch terminal is connected to the high-voltage AC circuit.

7. The high-voltage diffuse reflection LED soft light strip with double-layer complementary circuits according to claim 1, characterized in that: The back of the lower insulating layer is pasted with adhesive, the adhesive is made of a colloid with thermal conductivity, and the adhesive is used to adhere the LED soft light strip to a solid surface.

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