FPC light bar

Abstract

This application relates to an FPC light strip, including an FPC light strip body, with LED beads connected between the positive and negative terminals of the FPC light strip body. Positive and negative pads are provided at both ends of the FPC light strip body. The positive pad consists of positive pad one, positive pad two, positive pad three, and positive pad four. Positive pad one, positive pad two, positive pad three, and positive pad four are identical and all serve as the positive terminals of the FPC light strip, and are electrically connected to each other. Pad 3 and positive pad 4 are located at the four corners of the FPC light strip, slightly off-center from the horizontal center line, and symmetrical with respect to the horizontal and vertical center lines. The negative pad consists of negative pad 1 and negative pad 2, which are identical and both are the negative terminals of the FPC light strip, and are electrically connected to each other. Negative pad 1 and negative pad 2 are located at the midpoints of both ends of the FPC light strip, and are symmetrical with respect to the horizontal and vertical center lines. This application features a simple and convenient structure, low cost, high reliability, and reverse polarity protection with positive backup functionality.

Description

Technical Field

[0001] This application relates to an FPC (flexible) light strip, which is mainly suitable for the field of cold light lighting. Background Technology

[0002] The market demand for FPC LED strips is constantly increasing, with diverse length requirements. However, manufacturers produce FPC LED strips with fixed length specifications, and SMT placement machines have a production length limit, making it difficult to produce long FPC LED strips in one go. Current connection methods mostly involve external wire soldering or gold finger connections, which are relatively inconvenient, increase costs and difficulty, lack anti-reverse functionality, and have poor reliability. Summary of the Invention

[0003] The technical problem solved by this application is to overcome the above-mentioned shortcomings in the prior art and to provide an FPC light strip that is simple in structure, easy to use, low in cost, effective, and has anti-reverse and positive backup functions.

[0004] The technical solution adopted by this application to solve the above-mentioned technical problem is: an FPC light strip, including an FPC light strip body, characterized in that positive electrode pads and negative electrode pads are provided at both ends of the FPC light strip body, the positive electrode pads are composed of positive electrode pad one, positive electrode pad two, positive electrode pad three, and positive electrode pad four, positive electrode pad one, positive electrode pad two, positive electrode pad three, and positive electrode pad four are the same and are all positive electrodes of the FPC light strip and are electrically connected to each other, positive electrode pad one, positive electrode pad two, positive electrode pad three, and positive electrode pad four are identical and are all positive electrodes of the FPC light strip and are electrically connected to each other. The positive electrode pads 3 and 4 are located at the four corners of the FPC light strip, offset from the horizontal center line of the FPC light strip, and are symmetrical with respect to the horizontal and vertical center lines of the FPC light strip. The negative electrode pads consist of negative electrode pad 1 and negative electrode pad 2, which are identical and both are the negative terminals of the FPC light strip and are electrically connected to each other. Negative electrode pads 1 and 2 are located at the middle of both ends of the FPC light strip and are symmetrical with respect to the horizontal and vertical center lines of the FPC light strip. Because the positive electrode pads consist of positive electrode pad 1, positive electrode pad 2, positive electrode pad 3, and positive electrode pad 4 and are symmetrically arranged, and the negative electrode pads consist of negative electrode pad 1 and negative electrode pad 2 and are symmetrically arranged, when any two ends of the FPC light strip are soldered, it can be ensured that the positive terminals are electrically connected to the positive terminals and the negative terminals are electrically connected to the negative terminals, regardless of the direction. This provides reverse polarity protection and positive electrode backup functions. Even if one positive terminal of the FPC light strip is damaged, the other positive terminal can still function normally.

[0005] The positive and negative pads described in this application are both identical and electrically connected on opposite sides, meaning each pad is a double-sided pad. This design allows any two FPC light strips to be connected regardless of their orientation or which side the pad is on.

[0006] The positive electrode pads and negative electrode pads described in this application are both racetrack-shaped or elliptical.

[0007] The negative electrode pad described in this application has the same length as the positive electrode pad, and the width of the negative electrode pad is greater than the width of the positive electrode pad.

[0008] The distance between the positive and negative pads and the left or right end of the FPC light strip described in this application is 0; in an exception, any pad (including the positive and negative pads) is tangent to the edge of the embodiment of this application, and can be quickly connected after low-temperature soldering with a soldering iron, while preventing the high-temperature soldering iron from damaging the circuit and substrate of this embodiment.

[0009] The LED beads described in this application are connected in parallel to ensure that the voltage across each LED bead is the same and the brightness is the same.

[0010] When assembling FPC light strips, you can use individual FPC light strips of different lengths. When the total length changes, simply replace them with strips of different lengths. This method allows you to create FPC light strips with adjustable lengths to meet practical application needs.

[0011] The length of this embodiment can be fixed according to several standard length specifications specified by the production length of the SMT pick and place machine, simplifying production and material preparation. When the length is insufficient, it can be easily achieved by overlapping the first and last pads of multiple FPC light strip bodies for soldering. The soldering is done in series, that is, the positive pad 1, negative pad 1, and positive pad 2 of the second FPC light strip correspond to the positive pad 3, negative pad 2, and positive pad 4 of the first FPC light strip, and the positive pad 1, negative pad 1, and positive pad 2 of the third FPC light strip correspond to the positive pad 3, negative pad 2, and positive pad 4 of the second FPC light strip, and so on.

[0012] This application optimizes the connection method of light strips, allowing them to be combined into light strips of any length without the need for external wiring. This application also features an anti-reverse design, eliminating the need for sorting before soldering and saving time and costs associated with manual sorting.

[0013] Compared with the prior art, this application has the following advantages and effects: simple structure, easy to use, low cost, anti-reverse and positive backup functions, and high reliability. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0015] In the diagram: 1 - Positive pad one, 3 - Positive pad two, 4 - Positive pad three, 6 - Positive pad four, 2 - Negative pad one, 5 - Negative pad two, n - FPC strip length, 8 - Light-emitting element of FPC strip, special case is LED lamp bead. Detailed Implementation

[0016] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are illustrative of the present application, but the present application is not limited to them. The length direction mentioned in this application refers to... Figure 1 The left and right directions, the width direction refers to Figure 1 The up and down directions, the beginning and the end respectively refer to Figure 1 The left and right ends of the embodiments of this application are shown.

[0017] See Figure 1 This embodiment includes the existing FPC light strip body, characterized in that both ends of the FPC light strip body ( Figure 1 Positive and negative electrode pads are provided at the left and right ends of the FPC light strip. The positive electrode pads consist of positive electrode pad 1, positive electrode pad 3, positive electrode pad 4, and positive electrode pad 6. Positive electrode pads 1, 2, 3, 4, and 6 are identical and are all positive electrodes of the FPC light strip, and are electrically connected to each other. Positive electrode pads 1, 2, 3, 4, and 6 are located at the four corners of the FPC light strip, offset from the horizontal center line 7 of the FPC light strip, and are symmetrical to each other (i.e., the four positive electrode pads are located near the two end corners of the FPC light strip, and the four positive electrode pads are...). The FPC light strip has a side distance t along its width direction. The four positive electrode pads are symmetrical with respect to the horizontal center line 7 and the vertical center line 9 of the FPC light strip. The negative electrode pads consist of negative electrode pad 1 2 and negative electrode pad 2 5. Negative electrode pad 1 2 and negative electrode pad 2 5 are identical and are both negative electrodes of the FPC light strip and are electrically connected to each other. Negative electrode pad 1 2 and negative electrode pad 2 5 are located at the middle of both ends of the FPC light strip (negative electrode pad 1 2 is located at the middle of the left end of the FPC light strip, and negative electrode pad 2 5 is located at the middle of the right end of the FPC light strip) and are symmetrical with respect to the horizontal center line 7 and the vertical center line 9 of the FPC light strip.

[0018] Both the positive electrode pad and the negative electrode pad are racetrack-shaped (racetrack-shaped refers to the shape of a racetrack consisting of two curves on the left and right and two straight sections on the top and bottom) or elliptical.

[0019] The negative electrode pad described in this application has the same length as the positive electrode pad, and the width of the negative electrode pad is greater than the width of the positive electrode pad.

[0020] The positive terminal of the FPC light strip in this application is electrically connected to all positive terminal pads, thus having two sets of positive terminal connection lines, and both positive terminal connection lines are connected to the positive terminals of several LED beads connected in parallel in the light-emitting element 8. Even if one section of the positive terminal connection line is damaged, it will not affect the normal operation of this embodiment. The negative terminal of the FPC light strip is connected to the negative terminal of all light-emitting elements 8.

[0021] All positive and negative pads in this application are either single-sided pads or double-sided pads with electrical connections on both sides.

[0022] The length of this embodiment can be fixed according to several standard length specifications specified by the production length of the SMT placement machine, simplifying production and material preparation specifications. When the length is insufficient, it is easy to connect several FPC light strip bodies end to end in series for soldering (the first and last pads of several FPC light strip bodies overlap for soldering). For example, the positive pad 1, negative pad 2, and positive pad 3 of the second FPC light strip correspond to the positive pad 4, negative pad 5, and positive pad 6 of the first FPC light strip, and the positive pad 1, negative pad 2, and positive pad 3 of the third FPC light strip correspond to the positive pad 4, negative pad 5, and positive pad 6 of the second FPC light strip, and so on. In this application, the distance between any of the positive and negative pads and the left or right end of this embodiment is 0. In particular, any pad (including the positive and negative pads) is tangent to the edge of this embodiment, and can be quickly connected after low-temperature soldering with a soldering iron, while preventing the high-temperature soldering iron from damaging the circuit and substrate of this embodiment.

[0023] When assembling FPC light strips, you can use individual FPC light strips of different lengths. When the total length changes, simply replace them with strips of different lengths. This method allows you to create FPC light strips with adjustable lengths to meet practical application needs.

[0024] The LED beads 8 described in this application are connected in parallel to ensure that the voltage and brightness of each LED bead 8 are the same.

[0025] Any simple variations or combinations of the technical features and solutions of this application shall be considered to fall within the protection scope of this application.

Claims

1. An FPC light strip, comprising an FPC light strip body, wherein LED beads are connected between the positive and negative terminals of the FPC light strip body, characterized in that: The FPC light strip body has positive and negative pads at both ends. The positive pads consist of positive pad one, positive pad two, positive pad three, and positive pad four. Positive pad one, positive pad two, positive pad three, and positive pad four are identical and are all positive terminals of the FPC light strip and are electrically connected to each other. Positive pad one, positive pad two, positive pad three, and positive pad four are located at the four corners of the FPC light strip, offset from the horizontal center line of the FPC light strip, and are symmetrical with respect to the horizontal and vertical center lines of the FPC light strip. The negative pads consist of negative pad one and negative pad two. Negative pad one and negative pad two are identical and are all negative terminals of the FPC light strip and are electrically connected to each other. Negative pad one and negative pad two are located at the middle of both ends of the FPC light strip and are symmetrical with respect to the horizontal and vertical center lines of the FPC light strip.

2. The FPC light strip according to claim 1, characterized in that: The positive electrode pad and the negative electrode pad are two identical pads that are electrically connected on opposite sides.

3. The FPC light strip according to claim 1, characterized in that: Both the positive electrode pad and the negative electrode pad are racetrack-shaped or elliptical.

4. The FPC light strip according to claim 1, characterized in that: The negative electrode pad has the same length as the positive electrode pad, and the width of the negative electrode pad is greater than the width of the positive electrode pad.

5. The FPC light strip according to claim 1, characterized in that: The distance between the positive electrode pad, the negative electrode pad and the left or right end of the FPC lamp strip is 0.

6. The FPC light strip according to claim 1, characterized in that: The LEDs in the FPC light strip are all connected in parallel.

7. An FPC light strip, characterized in that: It is composed of several FPC light strips as described in any one of claims 1 to 6, connected end to end in series by welding.

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