CN216896913U - Resistant COB lamp strip structure of buckling - Google Patents
Resistant COB lamp strip structure of buckling Download PDFInfo
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- CN216896913U CN216896913U CN202220040606.8U CN202220040606U CN216896913U CN 216896913 U CN216896913 U CN 216896913U CN 202220040606 U CN202220040606 U CN 202220040606U CN 216896913 U CN216896913 U CN 216896913U
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Abstract
The utility model provides a bending-resistant COB light bar structure, which comprises: the flexible circuit board is provided with a ground wire conductive strip and a positive conductive strip which are parallel to each other, a plurality of groups of LED lamps which are connected in series are arranged in a gap between the ground wire conductive strip and the positive conductive strip in parallel, and each group of LED lamps comprises three LED chips which are arranged in parallel; three first rectangular conductive strips are arranged on one side of the ground wire conductive strip, which faces the positive conductive strip, in a direction perpendicular to the ground wire conductive strip. According to the utility model, the first I-shaped structure and the second I-shaped structure are arranged on the whole series circuit of the flexible circuit board, so that the problem of resistance and LED chip desoldering caused by structural internal stress increase of the FPC due to the distortion of the COB light bar is solved while the FPC copper foil is ensured to carry enough current.
Description
Technical Field
The utility model relates to the field of light bars, in particular to a bending-resistant COB light bar structure.
Background
In the prior art, a COB light bar is arranged on an FPC (flexible printed circuit) design circuit, a copper foil of the FPC is etched to form a circuit, three LED chips are connected in parallel to form a group, 7 groups of LED chips are connected in series in total, three resistors are designed on the series circuit, and DC24V is driven at a constant voltage; FPC has soft, the flexible characteristic, and the installation and the molding of COB lamp strip of being convenient for. Solder paste is printed on the corresponding Pad, an LED chip and a resistor are placed, reflow soldering is carried out, and then strip-shaped silica gel is coated on the surfaces of the LED and the resistor for protection and auxiliary light emitting.
However, because chip, resistance size restriction can't effectively promote thrust, easy installation of COB lamp strip and figurative characteristic moreover for the FPC distortion, the buckling of COB lamp strip in the use causes the LED chip, and resistance and pad are not hard up, the problem that drops, arouses the functional inefficacy of COB lamp strip.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bending-resistant COB light bar structure, which aims to solve at least one technical problem.
In order to solve the above problems, according to an aspect of the present invention, there is provided a bending-resistant COB light bar structure, including: the LED lamp comprises a flexible circuit board, wherein a ground wire conductive strip and a positive conductive strip which are parallel to each other are arranged on the flexible circuit board, a plurality of groups of LED lamps which are connected in series are arranged in a gap between the ground wire conductive strip and the positive conductive strip in parallel, and each group of LED lamps comprises three LED chips which are arranged in parallel; three first rectangular conductive strips are arranged on one side of the ground wire conductive strip, which faces the positive conductive strip, in a direction perpendicular to the ground wire conductive strip, wherein the length of the middle first rectangular conductive strip is smaller than the lengths of the two first rectangular conductive strips on the two sides, the two first rectangular conductive strips on the two sides are connected through a second rectangular conductive strip, and one end of the middle first rectangular conductive strip is connected with the second rectangular conductive strip; one end of each first rectangular conductive strip is connected with one end of one LED chip in the first group of LED lamps through one first diameter-reducing conductive strip, the other end of the LED chip in the first group of LED lamps is connected with one end of a third rectangular conductive strip through one second diameter-reducing conductive strip, and the third rectangular conductive strip is connected with the next group of LED lamps; the first rectangular conducting strips and the second rectangular conducting strips on the two sides form a first I-shaped structure together, and the third rectangular conducting strips, the second diameter-reducing conducting strips, the LED chip, the first diameter-reducing conducting strips and the first rectangular conducting strips form a second I-shaped structure together.
Preferably, the LED chips in each group of LED lamps all adopt the second i-shaped structure.
Preferably, the connection structure between the last group of LED lamps and the positive conductive strip is the same as the connection structure between the first group of LED lamps and the ground conductive strip.
According to the utility model, the first I-shaped structure and the second I-shaped structure are arranged on the whole series circuit of the flexible circuit board, so that the problem of resistance and LED chip desoldering caused by the increase of the structural internal stress of the FPC due to the distortion of the COB light bar is solved while the FPC copper foil is ensured to carry enough current.
Drawings
Fig. 1 schematically shows a structural schematic of the present invention.
Reference numbers in the figures: 1. a flexible circuit board; 2. a ground conductive strip; 3. a positive conductive strip; 4. an LED chip; 5. a first rectangular conductive strip; 6. a second rectangular conductive strip; 7. a first diameter reducing conductive strip; 8. a second diameter reducing conductive strip; 9. a third rectangular conductive strip; 10. a first I-shaped structure; 11. a second I-shaped configuration.
Detailed Description
The following detailed description of embodiments of the utility model, but the utility model can be practiced in many different ways, as defined and covered by the claims.
As an aspect of the present invention, a bending-resistant COB light bar structure is provided, including: the LED lamp comprises a flexible circuit board (FPC)1, wherein a ground wire conductive strip 2 and a positive conductive strip 3 which are parallel to each other are arranged on the flexible circuit board 1, a plurality of groups of LED lamps which are connected in series are arranged in a gap between the ground wire conductive strip 2 and the positive conductive strip 3 in parallel, and each group of LED lamps comprises three LED chips 4 which are arranged in parallel; three first rectangular conductive strips 5 are arranged on one side of the ground wire conductive strip 2 facing the positive conductive strip 3 in a direction perpendicular to the ground wire conductive strip 2, wherein the length of the middle first rectangular conductive strip 5 is smaller than the lengths of the two first rectangular conductive strips 5 on the two sides, the two first rectangular conductive strips 5 on the two sides are connected through a second rectangular conductive strip 6, and one end of the middle first rectangular conductive strip 5 is connected with the second rectangular conductive strip 6; one end of each first rectangular conductive strip 5 is connected with one end of one LED chip 4 in the first group of LED lamps through one first diameter-reducing conductive strip 7, the other end of the LED chip 4 in the first group of LED lamps is connected with one end of a third rectangular conductive strip 9 through one second diameter-reducing conductive strip 8, and the third rectangular conductive strip 9 is connected with the next group of LED lamps; the first rectangular conductive strips 5 and the second rectangular conductive strips 6 on the two sides form a first i-shaped structure 10 together, and the third rectangular conductive strips 9, the second diameter-reducing conductive strips 8, the LED chip 4, the first diameter-reducing conductive strips 7 and the first rectangular conductive strips 5 form a second i-shaped structure 11 together.
Preferably, the LED chips in each group of LED lamps all adopt the second i-shaped structure 11.
Preferably, the connection structure between the last group of LED lamps and the positive conductive strip 3 is the same as the connection structure between the first group of LED lamps and the ground conductive strip 2.
In the technical scheme, the first I-shaped structure 10 and the second I-shaped structure 11 are arranged on the whole series circuit of the flexible circuit board, wherein the first I-shaped structure 10 is adopted at the connecting part between the first group of LED lamps and the last group of LED lamps and the positive electrode and the negative electrode, the second I-shaped structure 11 is adopted in each group of LED lamps, so that the resistance and the LED chip desoldering caused by the structural internal stress increase of the FPC due to the distortion of the COB lamp strip are reduced while the enough load current of the FPC copper foil is ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a resistant COB lamp strip structure of buckling which characterized in that includes: the LED lamp comprises a flexible circuit board (1), wherein a ground wire conductive strip (2) and a positive electrode conductive strip (3) which are parallel to each other are arranged on the flexible circuit board (1), a plurality of groups of LED lamps which are connected in series are arranged in a gap between the ground wire conductive strip (2) and the positive electrode conductive strip (3) in parallel, and each group of LED lamps comprises three LED chips (4) which are arranged in parallel; three first rectangular conductive strips (5) are arranged on one side of the ground wire conductive strip (2) facing the positive conductive strip (3) in a direction perpendicular to the ground wire conductive strip (2), wherein the length of the middle first rectangular conductive strip (5) is smaller than the lengths of the two first rectangular conductive strips (5) on the two sides, the two first rectangular conductive strips (5) on the two sides are connected through a second rectangular conductive strip (6), and one end of the middle first rectangular conductive strip (5) is connected with the second rectangular conductive strip (6); one end of each first rectangular conductive strip (5) is connected with one end of one LED chip (4) in the first group of LED lamps through one first diameter-reducing conductive strip (7), the other end of each LED chip (4) in the first group of LED lamps is connected with one end of a third rectangular conductive strip (9) through one second diameter-reducing conductive strip (8), and the third rectangular conductive strip (9) is connected with the next group of LED lamps; the LED chip comprises a first rectangular conducting strip (5) and a second rectangular conducting strip (6), wherein the first rectangular conducting strip (5) and the second rectangular conducting strip (6) on the two sides jointly form a first I-shaped structure (10), and the third rectangular conducting strip (9), the second diameter-reducing conducting strip (8), the LED chip (4), the first diameter-reducing conducting strip (7) and the first rectangular conducting strip (5) jointly form a second I-shaped structure (11).
2. The resistant COB light bar structure of claim 1, characterized in that the second I-shaped structure (11) is adopted by the LED chips in each group of LED lamps.
3. The bending-resistant COB light bar structure of claim 1, wherein the connection structure between the last group of LED lamps and the positive conductive bar (3) is the same as the connection structure between the first group of LED lamps and the ground conductive bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220040606.8U CN216896913U (en) | 2022-01-07 | 2022-01-07 | Resistant COB lamp strip structure of buckling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220040606.8U CN216896913U (en) | 2022-01-07 | 2022-01-07 | Resistant COB lamp strip structure of buckling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216896913U true CN216896913U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220040606.8U Active CN216896913U (en) | 2022-01-07 | 2022-01-07 | Resistant COB lamp strip structure of buckling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216896913U (en) |
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2022
- 2022-01-07 CN CN202220040606.8U patent/CN216896913U/en active Active
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