High-voltage alternating current direct-drive type LED lens lamp strip

Abstract

The utility model relates to LED lamp strip technical field, specifically is a high -pressure alternating -current direct drive type LED lens lamp strip, including flexible circuit board, the flexible circuit board is equipped with several LED lamp pearl with equal interval, and the lamp pearl bottom is connected with the flexible circuit board through the solder pad and is communicated resistance through the circuit, and the lens for adjusting the luminous angle is installed to the lamp pearl outside, the flexible circuit board is connected two pin metal needle terminals through the solder pad, can directly access 220V alternating -current, the LED lamp pearl is built -in two positive and negative opposite LED chips, the flexible circuit board back surface is pasted and covers the back adhesive, and the material is metal copper foil, and the upper portion is equipped with the solder pad of mounting component, and the lower extreme is equipped with the insulating layer, the lamp strip does not need alternating -current conversion direct current related component, and the cost is reduced greatly, the lens can match different scene luminous demand, and the flexible design is light and occupies small space, and the row light is convenient, reduces the electricity frequency, and the back adhesive and terminal respectively simplify the installation and electricity operation, is applicable to the field such as advertisement decoration and brightening.

Description

Technical Field

[0001] This utility model relates to the field of LED light strip technology, specifically a high-voltage AC direct-drive LED lens light strip. Background Technology

[0002] LED light strips are made by assembling LED chips onto a strip-shaped FPC (flexible printed circuit board). Due to their long lifespan, energy efficiency, and environmental friendliness, LED light strips are gradually gaining prominence in various advertising and lighting industries. With the popularization of LED light sources, the market has more demands for the application of LED light sources in various environments and for different light emission angles. LED light strips, which can achieve more light emission angles to match different scenarios and usage environments and improve the product's lighting effect, can well meet the usage needs of various scenarios.

[0003] Existing advertising light box light sources generally use high-voltage lens rigid light strips. The surface of the strip needs to be fitted with components such as capacitors, inductors, electrolytic capacitors, and rectifier bridges to convert AC power to DC power. Furthermore, the DC voltage needs to be reduced to around 110V to match the LED chips. This results in high material costs for such products, as well as large product size, which in turn leads to relatively high transportation and storage costs. Therefore, in view of the above situation, there is an urgent need to develop a high-voltage AC direct-drive LED lens light strip to overcome the shortcomings in current practical applications. Utility Model Content

[0004] The purpose of this invention is to provide a high-voltage AC direct-drive LED lens light 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-voltage AC direct-drive LED lens light strip includes a flexible circuit board, on which a plurality of LED beads are equally spaced. The bottom of each LED bead is connected to the flexible circuit board via a solder pad and a resistor is connected through the circuit of the flexible circuit board. A lens for adjusting the light emission angle is provided on the outside of each LED bead. The flexible circuit board is connected to a terminal that can be directly connected to 220V AC power via solder pads, and the LED beads have a conductive structure adapted to AC power supply. The flexible circuit board has an adhesive backing, an insulating layer at the bottom, and solder pads for mounting components at the top.

[0006] As a further embodiment of this utility model: the conduction structure of the LED lamp bead is as follows: The LED bead contains two LED chips with opposite positive and negative poles, which are respectively adapted to conduct and emit light during the positive and negative half-cycles of the AC power.

[0007] As a further embodiment of this utility model: the conduction structure of the LED lamp bead is as follows: The flexible circuit board is equipped with a rectifier bridge, which is connected to the circuit of the flexible circuit board through pads to convert AC power into DC power; the LED beads have built-in unidirectional LED chips.

[0008] As a further embodiment of this utility model: the flexible circuit board is made of copper foil, and the insulating layer is made of PI or PET.

[0009] As a further embodiment of this utility model: the flexible circuit board is in the shape of the Great Wall, and the protruding position of one of the flexible circuit boards is complementary and adapted to the recessed position of the adjacent flexible circuit board.

[0010] As a further embodiment of this utility model: the terminal is a two-pin metal pin, and the two pins are respectively connected to the two main lines of the flexible circuit board.

[0011] As a further embodiment of this invention, the pads on the flexible circuit board are made by means of a perforated cover film.

[0012] As a further embodiment of this invention: the resistor is a surface mount resistor, used to adjust the product current.

[0013] As a further embodiment of this invention: the lens is a diffuse reflection lens, used to illuminate the single-sided light-emitting surface of the light box from the back.

[0014] As a further embodiment of this invention: the lens is a side-emitting lens, which can adjust the light into a rectangular beam of 1060 or other specifications, for illuminating the single-sided emitting surface of the light box from the side.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model sets two LED chips with opposite positive and negative poles inside the LED bead. During the positive half-cycle of the AC power, the forward-connected LED chip conducts and emits light, while the reverse-connected LED chip is cut off. During the negative half-cycle of the AC power, the reverse-connected LED chip becomes forward-connected and emits light, while the originally forward-connected LED chip is cut off. The two LEDs emit light alternately, covering both the positive and negative half-cycles of the AC power, so that the LED bead can be lit directly with AC power and the flickering of the LED is not visible to the naked eye. This design greatly reduces the need for AC to DC power supply components and significantly reduces costs. 2. The flexible circuit board adopts an infinite length design, which makes it easy to arrange lights and reduces the frequency of power connection; the flexible board design is lightweight, and the space occupied by products of the same length is greatly reduced, which facilitates transportation and storage. 3. Lenses are installed on the outside of the LED beads. The light emitted by the LED beads can be refracted by the lenses to adjust the light emission angle, which can match the light emission angle required by the actual scene. For example, the diffuse reflection lens can illuminate the single light emission surface of the light box from the back, and the side light emission lens can adjust the light to 1060 or other rectangular beams, which can illuminate the wall or fabric surface from the side. 4. The flexible circuit board adopts a Great Wall shape, with the protruding part of one board complementing the concave part of the adjacent board. This not only allows for the arrangement of components such as LED beads, lenses, resistors and terminals in a wider area, but also facilitates bending and shaping due to the alternating width and narrowness design, making it suitable for more installation scenarios. 5. The flexible circuit board has an adhesive backing, making it easy to stick to the surface of an object and simplifying the installation process; the top of the flexible circuit board has several pads with openings in the cover film, which facilitates the mounting of various components; the bottom is equipped with an insulating layer (the insulating layer is made of PI or PET material); the flexible circuit board is made of copper foil, which ensures the safety of the product and the convenience of installation. 6. The terminals use two-pin metal pins, with each pin connecting to one of the two main lines of the flexible circuit board. Power can be easily connected via the terminal wires without the need for professional wire soldering, further simplifying the usage process. The resistor can be used to regulate the product current, ensuring stable product operation. 7. A rectifier bridge can be added to convert AC power to DC power, allowing the LED beads to use conventional unidirectional LED chips, thus improving product adaptability and expanding the application range. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the high-voltage AC direct-drive LED lens light strip of this utility model.

[0017] Figure 2 This is a top view of the diffuse reflection lens scheme in this utility model.

[0018] Figure 3 This is a side view schematic diagram of the diffuse reflection lens scheme in this utility model.

[0019] Figure 4 This is a top view of the diffuse reflection lens scheme with rectifier bridge in this utility model.

[0020] Figure 5 This is a side view of the diffuse reflection lens scheme with rectifier bridge in this utility model.

[0021] Figure 6 This is a top view of the side-emitting lens design of this utility model.

[0022] Figure 7 This is a side view schematic diagram of the side-emitting lens scheme of this utility model.

[0023] In the diagram: 1-Flexible circuit board, 2-Adhesive backing, 3-LED lamp bead, 4-Resistor, 5-Lens, 6-Terminal, 7-Rectifier bridge, 8-LED chip. Detailed Implementation

[0024] 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.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1-7 The present invention provides a high-voltage AC direct-drive LED lens light strip, including a flexible circuit board 1. The flexible circuit board 1 is made of copper foil and is designed in the shape of the Great Wall. The protruding position of one board is exactly complementary to the concave position of the adjacent board.

[0027] A plurality of LED beads 3 are arranged at equal intervals on the flexible circuit board 1. The bottom of the LED beads 3 is fixedly connected to the flexible circuit board 1 through a solder pad, and the circuit is connected to the resistor 4 through the lines of the flexible circuit board 1. The chip resistor 4 is used to adjust the product current.

[0028] A lens 5 is installed on the outside of the LED bead 3, which completely covers the LED bead 3 and is used to adjust the light emission angle of the LED bead 3.

[0029] The LED bead 3 contains two LED chips 8 arranged with opposite positive and negative poles, so that both forward and reverse currents can light up the LED bead 3.

[0030] The flexible circuit board 1 is also connected to the terminal 6 via a solder pad. The terminal 6 is a two-pin metal pin, with the two pins connected to the two main lines of the flexible circuit board 1 respectively. The terminal 6 can be directly connected to 220V AC power, and it is easy to connect to power by connecting the terminal wire without the need for professional wire bonding.

[0031] The flexible circuit board 1 has an adhesive backing 2 on its back for attaching the light strip to the surface of the object; several pads are provided on the top of the flexible circuit board 1, which are made by opening the cover film to provide mounting positions for various components; an insulating layer is provided at the bottom of the flexible circuit board 1, which is made of PI or PET material.

[0032] By designing the LED bead 3 to incorporate two LED chips 8 with opposite polarities, during the positive half-cycle of the AC current, the forward-connected LED chip 8 conducts and emits light, while the reverse-connected LED chip 8 is cut off. During the negative half-cycle of the AC current, the reverse-connected LED chip 8 becomes forward-connected and emits light, while the originally forward-connected LED chip 8 is cut off. The two LED chips 8 emit light alternately, covering both the positive and negative half-cycles of the AC current, achieving the effect of directly lighting the LED bead 3 with AC current. Moreover, the flickering of the LED bead 3 is imperceptible to the naked eye. The number of LED beads 3 connected in series depends on the voltage of the LED chips 8. It can be made by connecting 12 LED beads 3 using 18V LED chips 8 in series, or by using other LED beads 3 with a smaller number of series but increasing the voltage of the LED chips 8. No additional AC-to-DC conversion components are needed, which greatly reduces the product cost.

[0033] The Great Wall-shaped flexible circuit board 1 not only meets the requirements for arranging components such as LED beads 3, lens 5, resistor 4, and terminal 6 in a wider space, but also facilitates the bending and shaping of the light strip due to its alternating width and narrowness design, adapting to more installation scenarios; the flexible circuit board 1 made of copper foil, combined with the PI or PET insulating layer, ensures the safety of product use; the adhesive backing 2 simplifies the installation of the light strip, and the structural design of the terminal 6 simplifies the power connection process; the lens 5 can adjust the light emission angle by refracting the light emitted by the LED beads 3, which can match the light emission requirements of different scenarios and can illuminate one or both sides of the light box from the side.

[0034] In one embodiment of this utility model, a rectifier bridge 7 is added to the flexible circuit board 1. The rectifier bridge 7 is connected to the circuit of the flexible circuit board 1 through the solder pads to convert the incoming AC power into DC power. Correspondingly, the LED bead 3 in this embodiment adopts a conventional structure, that is, only one unidirectional conducting LED chip 8 is set inside.

[0035] By adding a 220V rectifier bridge 7, the AC power input through terminal 6 is converted into 220V DC power and connected in series with the LED beads 3. This allows the light strip to be compatible with conventional unidirectional LED chips 8, eliminating the need for custom-made beads with two reverse-arranged LED chips 8. This improves the product's compatibility and expands its application range. At the same time, it retains the advantages of the flexible circuit board 1, adhesive backing 2, terminal 6, resistor 4, and lens 5, such as convenient installation, lower cost, and adjustable beam angle.

[0036] In one embodiment of this utility model, lens 5 is replaced with a side-emitting lens, which can adjust the light emitted by LED beads 3 into a rectangular beam of 1060 or other specifications.

[0037] By replacing the ordinary lens with a side-emitting lens, the light strip's light emission pattern becomes more targeted, enabling it to illuminate the entire wall or fabric surface from the side, further expanding the application scenarios of the light strip. It is especially suitable for lighting scenarios that require large-area side lighting. At the same time, it retains the beneficial effects of the rectifier bridge 7 for adapting to conventional LED beads 3, the flexible structure for easy installation and transportation, and the terminals 6 and adhesive backing 2 for simplified operation.

[0038] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms sliding, rotating, fixed, and provided should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-voltage AC direct-drive LED lens light strip, characterized in that, The device includes a flexible circuit board (1), on which a plurality of LED beads (3) are arranged at equal intervals. The bottom of each LED bead (3) is connected to the flexible circuit board (1) via a pad and is connected to a resistor (4) via a line on the flexible circuit board (1). The outer side of each LED bead (3) is covered with a lens (5) for adjusting the light emission angle. The flexible circuit board (1) is connected to a terminal (6) that can be directly connected to 220V AC power via a pad. The LED bead (3) has a conductive structure adapted to AC power supply. The flexible circuit board (1) is covered with adhesive (2) on the back, has an insulating layer at the bottom, and has pads for mounting components at the top.

2. The high-voltage AC direct-drive LED lens light strip according to claim 1, characterized in that, The conduction structure of the LED bead (3) is as follows: The LED bead (3) has two built-in LED chips (8) with opposite positive and negative poles. The two LED chips (8) are respectively adapted to conduct light during the positive and negative half-cycles of AC power.

3. The high-voltage AC direct-drive LED lens light strip according to claim 1, characterized in that, The conduction structure of the LED bead (3) is as follows: The flexible circuit board (1) is provided with a rectifier bridge (7), which is connected to the circuit of the flexible circuit board (1) through a solder pad and is used to convert AC power into DC power; the LED beads (3) have built-in unidirectional conductive LED chips (8).

4. The high-voltage AC direct-drive LED lens light strip according to any one of claims 1-3, characterized in that, The flexible circuit board (1) is made of copper foil, and the insulating layer is made of PI or PET.

5. The high-voltage AC direct-drive LED lens light strip according to claim 1, characterized in that, The flexible circuit board (1) is in the shape of the Great Wall, and the protruding position of one of the flexible circuit boards (1) is complementary to the recessed position of the adjacent flexible circuit board (1).

6. The high-voltage AC direct-drive LED lens light strip according to claim 1, characterized in that, The terminal (6) is a two-pin metal pin, and the two pins are respectively connected to the two main lines of the flexible circuit board (1).

7. The high-voltage AC direct-drive LED lens light strip according to any one of claims 1-3, characterized in that, The pads on the flexible circuit board (1) are made by a cover film opening design.

8. The high-voltage AC direct-drive LED lens light strip according to claim 1, characterized in that, The resistor (4) is a chip resistor used to adjust the product current.

9. The high-voltage AC direct-drive LED lens light strip according to claim 1, characterized in that, The lens (5) is a diffuse reflection lens used to illuminate the single-sided light-emitting surface of the light box from the back.

10. The high-voltage AC direct-drive LED lens light strip according to claim 1, characterized in that, The lens (5) is a side-emitting lens, which can adjust the light to a rectangular beam of 1060 or other specifications, and is used to illuminate the single-sided emitting surface of the light box from the side.

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