LED chip lamp strip

Abstract

The utility model discloses a light-emitting diode (LED) chip lamp belt, which belongs to the technical field of lamp belts and comprises a flexible circuit board, a base material and a lighting group, the flexible circuit board is strip-shaped, parallel leads are arranged on two sides of the flexible circuit board, the two leads are connected with an alternating current power supply, a plurality of contacts are uniformly arranged in the length direction of the leads, and the contacts are connected with the base material. A plurality of lighting groups are etched on the flexible circuit board, the back side of the flexible circuit board is adhered to the base material, and back glue is arranged on the back side of the base material and used for being adhered to a wall or other building structures. The lighting sets are arranged between the two wires in parallel, and every two adjacent lighting sets can be connected in series end to end. Besides, the lighting set comprises an upper node circuit, a lower node circuit and an LED chip, specifically, the upper node circuit and the lower node circuit are connected to the two parallel wires respectively and are connected through the LED chip, and therefore it is guaranteed that the cut lamp strip cannot be disconnected, and the lamp strip can be used in a segmented mode through cutting.

Description

Technical Field

[0001] The utility model relates to the technical field of light strips, in particular to an LED chip light strip. Background Art

[0002] High-voltage light strips are also called AC light strips. They are powered by AC, which is different from low-voltage light strips (DC light strips) that are powered by DC. High-voltage light strips are equipped with rectifiers, so they need to be connected to the mains to be used, and the mains is rectified by the rectifier before being supplied to the lamp beads.

[0003] Existing high-voltage light strip circuits generally use a control method of connecting lamp beads in parallel. Since the rated power of the lamp beads is large, but the luminous efficiency is very low, when the number of lamp beads in parallel is large, too many branches will be generated, which will shunt the total current, and then cause the branch current to be unable to meet the rated current of the lamp beads, causing the brightness of the end lamp beads to decrease, thereby affecting the overall luminous effect of the high-voltage light strip. Utility Model Content

[0004] To this end, the utility model provides an LED chip light strip, which uses LED chips to replace lamp beads to solve the problem of insufficient power supply caused by a large number of lamp beads connected in parallel in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The LED chip light strip disclosed in the utility model comprises:

[0007] The flexible circuit board is in the shape of a long strip, with two parallel wires on both sides and a number of contacts evenly arranged along the length of the wires. When installing the light strip, multiple power sources can be connected through the contacts to ensure balanced power supply;

[0008] A substrate, with the flexible circuit board attached to the front side and adhesive backing to the back side;

[0009] A plurality of lighting groups are evenly arranged on the flexible circuit board, and a plurality of the lighting groups are arranged in parallel between two of the wires, and two adjacent lighting groups are connected in series.

[0010] Further, the lighting group includes an upper node circuit, a lower node circuit and an LED chip;

[0011] The upper node circuit and the lower node circuit are respectively connected to the two parallel wires, and each of the upper node circuit and the lower node circuit includes two branches;

[0012] The upper node circuit and the lower node circuit are connected via two LED chips that are reversely connected in series, and the adjacent LED chips are reversely connected.

[0013] Furthermore, the substrate is a tinfoil strip.

[0014] Furthermore, the back side of the substrate is adhered to the backing paper via adhesive, and a linear scale is provided on the backing paper.

[0015] Furthermore, the substrate is covered with a colloid, the colloid is used to encapsulate the lighting group, and the colloid is doped with a fluorescent agent.

[0016] Furthermore, a current stabilizer is connected to the lighting group, and the current stabilizer is an inductor or a resistor.

[0017] The utility model has the following advantages:

[0018] In the present invention, LED chips are mainly used to replace the original lamp beads as the light source for lighting. Compared with lamp beads, LED chips have the advantages of low power consumption, less heat and high brightness. At the same time, in the present technical solution, the PN node structure of the LED chip and the unidirectional conductive characteristics of the PN node are utilized to continuously arrange the LED chips in the form of a bridge rectifier circuit, so that the light strip itself has a rectification function, thereby enabling the light strip to be directly connected to industrial frequency AC power without the need to configure an additional rectifier, thereby effectively reducing the installation and maintenance costs of the light strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 This is the structure diagram of the LED chip light strip provided by the utility model;

[0022] Figure 2 The utility model provides Figure 1 A local enlarged view at point A;

[0023] Figure 3This is a schematic diagram of the hierarchical structure of the LED chip light strip provided by the utility model;

[0024] Figure 4 A front view of the backing paper provided by the utility model;

[0025] Figure 5 The schematic diagram of the lighting group circuit provided by the utility model;

[0026] In the figure: 1 flexible circuit board; 2 conductor; 3 substrate; 4 contact; 5 lighting group; 51 upper node circuit; 52 lower node circuit; 53 LED chip; 6 linear scale; 7 backing paper; 8 colloid; 9 current stabilizer. DETAILED DESCRIPTION

[0027] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Please refer to Figure 1-Figure 5 The LED chip light strip disclosed by the utility model adopts LED chips instead of the lamp beads in the prior art as the light source device for luminescence, and at the same time uses the LED chips to be reversely connected in parallel to realize rectification in the light strip, so that the light strip can use alternating current for lighting.

[0029] The technical solution disclosed in the present utility model will be specifically described below in the form of embodiments.

[0030] First, if Figure 1 and Figure 2 The main structure of the LED chip light strip includes a flexible circuit board 1, a substrate 3 and a lighting group 5, wherein the flexible circuit board 1 is in the shape of a long strip and has the characteristics of being able to be bent and folded freely. Two parallel wires 2 are arranged on both sides of the flexible circuit board 1, and the two parallel wires 2 are connected to an AC power source. At the same time, a number of contacts 4 are evenly arranged along the length direction of the wires 2, and the wires are connected to the contacts 4 by soldering, so that the cut light strip can be powered by external AC power through the contacts 4. If necessary, industrial frequency AC power can be connected to multiple contacts 4 to prevent the problem of insufficient power supply. When installing the light strip, the contacts 4 can be connected to the AC power source by soldering, so as to illuminate through the light strip. The back side of the flexible circuit board 1 is bonded to the substrate 3, and the back side of the substrate 3 is provided with a backing adhesive for bonding to a wall or other building structure.

[0031] In this embodiment, if Figure 2 A number of lighting groups 5 are etched on the flexible circuit board 1. These lighting groups 5 are arranged in parallel between two wires 2, and two adjacent lighting groups 5 can be connected in series. Specifically, the lighting group 5 includes an upper node circuit 51, a lower node circuit 52 and an LED chip 53, wherein the upper node circuit 51 and the lower node circuit 52 are conductors etched in the flexible circuit board 1, and the upper node circuit 51 and the lower node circuit 52 are respectively connected to two parallel wires 2, thereby ensuring that the cut light strip will not be broken. And the upper node circuit 51 and the lower node circuit 52 are reversely connected to each other, so that AC power enters the lighting group 5 and the LED chip 53.

[0032] In this embodiment, if Figure 2 and Figure 5 , the upper node circuit 51 and the lower node circuit 52 can be a wire, and optionally, the upper node circuit 51 and the lower node circuit 52 can also each include two branches. Specifically, similar to a bridge rectifier circuit, the upper node circuit 51 and the lower node circuit 52 are connected through a plurality of parallel LED chips 53, and the adjacent LED chips 53 are reversely connected. Since the LED chip 53 itself is composed of a PN junction, this structure has unidirectional conductivity, so the LED chip 53 can be regarded as a diode, and the circuit of the lighting group 5 composed of the LED chip 53 can play a rectifying role in the process of light emission. Therefore, compared with the prior art, the method of connecting the light strip to the mains through a rectifier can be completely abandoned in the embodiment, thereby effectively reducing the installation cost of the light strip.

[0033] In some embodiments, the substrate 3 is a tinfoil strip. The tinfoil is made of metal and has good thermal conductivity. It is also easy to shape, which is convenient for the installation or shaping of the light strip.

[0034] In some embodiments, Figure 4 The back side of the substrate 3 is attached to the backing paper 7 by adhesive, and the backing paper 7 is provided with a linear scale 6. When in use, the use length of the light strip can be determined by the scale 6 on the backing paper 7. When installing the light strip, the backing paper 7 can be torn off and pasted on the wall. In this embodiment, the substrate 3 is covered with a colloid 8, which is used to encapsulate the lighting group 5 and is doped with a fluorescent agent. The fluorescent agent emits light after being irradiated by light, which can well alleviate the stroboscopic problem caused by AC lighting and has a good effect on protecting human vision.

[0035] In some embodiments, Figure 5 , the lighting group 5 is connected to a current stabilizer 9, which is an inductor or a resistor, thereby forming an impedance through the inductor or the resistor to play a current limiting role. Specifically, the current stabilizer 9 is connected between two groups of reversely connected LED chips 53. Since the LED chips 53 are essentially light-emitting diodes, when AC power or AC power passes through the lighting group 5, Figure 5 There will be an instantaneous current peak on the branch ADCB and the branch BDCA, and this current peak will harm the stability of the LED chip 53. When an inductor or a resistor is used to alleviate this peak, the LED chip 53 can be prevented from being broken down by the current, so that the light strip can work stably.

[0036] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An LED chip light strip, characterized in that: include: The flexible circuit board (1) is in the shape of a long strip, with two parallel conductors (2) arranged on both sides, and a plurality of contacts (4) evenly arranged along the length direction of the conductors (2); A substrate (3) having the flexible circuit board (1) attached to the front side and having adhesive backing arranged on the back side; A plurality of lighting groups (5) are evenly arranged on the flexible circuit board (1); a plurality of the lighting groups (5) are arranged in parallel between two of the conductive wires (2), and two adjacent lighting groups (5) are connected in series.

2. The LED chip light strip according to claim 1, characterized in that: The lighting group (5) comprises an upper node circuit (51), a lower node circuit (52) and an LED chip (53); The upper node circuit (51) and the lower node circuit (52) are respectively connected to two parallel conductive wires (2), and the upper node circuit (51) and the lower node circuit (52) each include two branches; The upper node circuit (51) and the lower node circuit (52) are connected via two LED chips (53) that are reversely connected in series, and adjacent LED chips (53) are reversely connected.

3. The LED chip light strip according to claim 1, characterized in that: The substrate (3) is tin foil.

4. The LED chip light strip according to claim 1, characterized in that: The back surface of the substrate (3) is adhered to the backing paper (7) via a backing adhesive, and a linear scale (6) is provided on the backing paper (7).

5. The LED chip light strip according to claim 1, characterized in that: The substrate (3) is covered with a colloid (8), the colloid (8) is used to encapsulate the lighting group (5), and the colloid (8) is doped with a fluorescent agent.

6. The LED chip light strip according to claim 1, characterized in that: A current stabilizer (9) is connected to the lighting group (5), and the current stabilizer (9) is an inductor or a resistor.

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