CN217135734U - Multi-color LED lamp strip and driving circuit thereof - Google Patents
Multi-color LED lamp strip and driving circuit thereof Download PDFInfo
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- CN217135734U CN217135734U CN202123149174.9U CN202123149174U CN217135734U CN 217135734 U CN217135734 U CN 217135734U CN 202123149174 U CN202123149174 U CN 202123149174U CN 217135734 U CN217135734 U CN 217135734U
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- 238000010586 diagram Methods 0.000 description 7
- 239000003086 colorant Substances 0.000 description 2
- 235000019557 luminance Nutrition 0.000 description 2
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a multicolor LED lamp belt and a driving circuit thereof, comprising a first LED light source to a sixth LED light source, wherein the driving circuit comprises a first switch to a sixth switch and a control circuit thereof, when the first switch is conducted, the fourth switch is conducted to light the first LED light source, and when the sixth switch is conducted to light the fifth LED light source; when the third switch is turned on, the second switch is turned on, the third LED light source is lightened, and the sixth switch is turned on, the second LED light source is lightened; when the fifth switch is conducted, the fourth LED light source is lightened, and when the second switch is conducted, the fourth LED light source is lightened. By adopting the LED driving circuit, the number of circuit channels on the lamp strip is reduced under the condition of driving the same kind of LED light sources, the circuit wiring width is increased on the LED lamp strip with the fixed width, and the resistance of the circuit channels is reduced, so that the brightness difference between the head end and the tail end of the LED light sources is smaller.
Description
Technical Field
The invention relates to the field of LEDs, in particular to a driving circuit of a multicolor LED light source.
Background
With the development of LED lighting technology, LED strip lighting is more and more popular with people, and LED strips are limited by their structures, and in long-distance strip applications, the head-to-tail brightness of the strip is greatly different, because the width and thickness of the internal wiring of the LED strip are determined, when the wiring width is narrow and the copper foil thickness is thin, the resistance of the wiring of the strip is large, and the LED strip limits the flow of large current. If multiple colors need to be controlled in one LED lamp strip respectively, at least one wire needs to be added when one lamp strip color is added, for example, 6 lamp strip wires are needed at least when 5 different colors are used, therefore, the width of each wire is limited on the same lamp strip width, the wire resistance of the LED lamp strip is increased sharply, and the brightness of the head and tail parts of the LED lamp strip is poor.
Chinese patent No. 2021213758003 provides a polychrome flexible LED lamp area, and its adoption has printed the LED circuit on flexible circuit board, has LED unit and resistance unit in the welding of flexible circuit board's front, the LED unit with resistance unit series connection, the LED unit includes the emitting diode array of a plurality of different chromatic lights. The technical scheme still cannot solve the problem that the brightness of the head and tail parts of the multi-color LED lamp strip is poor.
Therefore, it is necessary to develop a multi-color LED strip, which can solve the problem of poor brightness of the head and tail portions under a long distance condition.
SUMMERY OF THE UTILITY MODEL
The invention provides a multicolor LED lamp strip, which adopts the technical scheme as follows:
a driving circuit of a multicolor LED lamp strip comprises a first circuit, a second circuit and a third circuit, and further comprises a first LED light source, a second LED light source, a third LED light source, a fourth LED light source, a fifth LED light source, a sixth LED light source, a first switch, a second switch, a third switch, a fourth switch, a fifth switch and a sixth switch, wherein the first LED light source and the third LED light source of the lamp strip are connected in parallel, the second LED light source and the fourth LED light source are connected in parallel, the fifth LED light source and the sixth LED light source are connected in parallel,
when a first switch of the driving circuit is conducted, a fourth switch is conducted, then the first LED light source is lightened, and a sixth switch is conducted, then the fifth LED light source is lightened;
when a third switch of the driving circuit is conducted, the second switch is conducted, the third LED light source is lightened, and the sixth switch is conducted, the second LED light source is lightened;
when the fifth switch of the driving circuit is conducted, the fourth switch is conducted, then the fourth LED light source is lightened, and when the second switch is conducted, then the fourth LED light source is lightened.
Further, the sum of the lighting time of each of the first LED light source, the second LED light source, the third LED light source, the fourth LED light source, the fifth LED light source and the sixth LED light source in one period T of PWM of the control circuit is less than or equal to T.
Furthermore, the first switch, the third switch and the fifth switch are connected with the positive pole of the driving power supply, and the second switch, the fourth switch and the sixth switch are connected with the negative pole of the driving power supply.
Furthermore, the first switch and the second switch are connected with the first circuit of the lamp strip, the third switch and the fourth switch are connected with the second circuit of the lamp strip, and the fifth switch and the sixth switch are connected with the third circuit of the lamp strip.
By adopting the multicolor LED driving scheme, the number of circuit channels on the lamp strip is reduced, the circuit wiring width is increased on the LED lamp strip with the same width, the resistance of the circuit channels is greatly reduced, and the brightness difference between the head end and the tail end of the LED light source is smaller.
Drawings
FIG. 1: LED light source driving schematic diagram in the prior art.
FIG. 2: the utility model discloses LED light source drive schematic diagram.
FIG. 3: the utility model discloses a LED light source circuit drive schematic diagram.
Description of the drawing reference numbers: a first switch 101, a second switch 102, a third switch 103, a fourth switch 104, a fifth switch 105, and a sixth switch 106.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In particular, the peripheral circuit of the multi-color LED strip of the present invention belongs to the common general knowledge of those skilled in the art, and will not be described herein.
For convenience of description, the present invention is described by taking three traces as an example to drive six different LED light sources, and it is well known to those skilled in the art that the technical solution of the present invention can also be implemented in various forms, for example, four traces drive twelve different LED light sources, or two traces drive two different LED light sources, without departing from the spirit and spirit of the present invention, and all of them should fall within the protection scope of the present invention.
Referring to fig. 1, a schematic diagram of LED light source driving in the prior art is shown, where two circuit channels are required for wiring one LED light source and four circuit channels are required for driving three different LED light sources; seven circuit channels are required to drive six different LED light sources. Therefore, the cost is extremely high, the market competitiveness is weak, and the user experience is poor.
Please refer to fig. 2, the layout schematic diagram of the LED strip according to the embodiment of the present invention is illustrated by taking three lines to drive six different LED light sources as an example, the multi-color LED light source of the present invention includes a first circuit a, a second circuit B and a third circuit C, a first LED light source L1, a second LED light source L2, a third LED light source L3, a fourth LED light source L4, a fifth LED light source L5 and a sixth LED light source L6, each of the LED light sources may adopt different color temperatures and luminances, and each of the LED light sources may further include LEDs with various color temperatures and luminances.
In the LED light source layout diagram shown in fig. 2, when any one of the light sources of the first circuit a, the second circuit B, and the third circuit C applies a high level and the other two light sources are low levels, and the voltage is greater than or equal to the on-state voltage of the LED light source, the forward LED therein is turned on, which will be referred to as a line a light source, a line B light source, and a line C light source for convenience of description, respectively, that is:
when the a-line light source applies a high level and the B-line light source and the C-line light source apply a low level, the first LED light source L1 and the fifth LED light source L5 are turned on.
When the B-line light source applies a high level and the a-line light source and the C-line light source apply a low level, the second LED light source L2 and the third LED light source L3 are turned on.
When the C-line light source applies a high level and the a-line light source and the B-line light source apply a low level, the fourth LED light source L4 and the fifth LED light source L5 are turned on.
With further reference to fig. 3, the LED light source circuit driving schematic diagram of the present invention, the three LED light sources of the embodiment of the present invention adopt the following control modes:
the first switch 101, the third switch 103, and the fifth switch 105 are connected to the positive electrode of the driving power source, and the second switch 102, the fourth switch 104, and the sixth switch 106 are connected to the negative electrode of the driving power source.
The first switch 101 and the second switch 102 are connected with the A line LED light source and cannot be conducted at the same time, the third switch 103 and the fourth switch 104 are connected with the B line LED light source and cannot be conducted at the same time, and the fifth switch 105 and the sixth switch 106 are connected with the C line LED light source and cannot be conducted at the same time.
When the first switch 101 is turned on and the fourth switch 104 is turned on, the first LED light source L1 is turned on, and when the sixth switch 106 is turned on, the fifth LED light source L5 is turned on.
When the third switch 103 is turned on and the second switch 102 is turned on, the third LED light source L3 is turned on, and when the sixth switch 106 is turned on, the second LED light source L2 is turned on.
When the fifth switch 105 is turned on and the fourth switch 104 is turned on, the fourth LED light source L6 is turned on, and when the second switch 102 is turned on, the fourth LED light source L4 is turned on.
At the same time, only one group of LED light sources can be lighted, for example, let T be a PWM pulse signal period of a certain drive, T L1 、t L2 、t L3 、t L4 、t L5 、t L6 When the first LED light source L1, the second LED light source L2, the third LED light source L3, the fourth LED light source L4, the fifth LED light source L5 and the sixth LED light source L6 are turned on in the T period, respectivelyM, then t L1 +t L2 +t L3 +t L4 +t L5 +t L6 The sum is less than or equal to T.
By adopting the multicolor LED driving scheme, the number of circuit channels on the lamp strip is reduced, the circuit wiring width is increased on the LED lamp strip with the same width, the resistance of the circuit channels is greatly reduced, and the brightness difference between the head end and the tail end of the LED light source is smaller.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as 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 (4)
1. A multi-color LED lamp belt and a driving circuit thereof comprise a first circuit, a second circuit and a third circuit, and are characterized by further comprising a first LED light source, a second LED light source, a third LED light source, a fourth LED light source, a fifth LED light source, a sixth LED light source, a first switch, a second switch, a third switch, a fourth switch, a fifth switch and a sixth switch, wherein the first LED light source and the third LED light source of the lamp belt are connected in parallel, the second LED light source and the fourth LED light source are connected in parallel, the fifth LED light source and the sixth LED light source are connected in parallel,
when a first switch of the driving circuit is conducted, a fourth switch is conducted, then the first LED light source is lightened, and a sixth switch is conducted, then the fifth LED light source is lightened;
when a third switch of the driving circuit is conducted, the second switch is conducted, the third LED light source is lightened, and the sixth switch is conducted, the second LED light source is lightened;
when the fifth switch of the driving circuit is conducted, the fourth switch is conducted, then the fourth LED light source is lightened, and when the second switch is conducted, then the fourth LED light source is lightened.
2. The multi-color LED strip and the driving circuit thereof according to claim 1, wherein the sum of the lighting time of each of the first LED light source, the second LED light source, the third LED light source, the fourth LED light source, the fifth LED light source and the sixth LED light source in one period T of PWM of the control circuit is less than or equal to T.
3. The multi-color LED strip and the driving circuit thereof according to claim 1, wherein the first switch, the third switch and the fifth switch are connected to the positive pole of the driving power source, and the second switch, the fourth switch and the sixth switch are connected to the negative pole of the driving power source.
4. The multi-color LED strip and driver circuit thereof of claim 1, wherein said first switch and second switch are connected to the first circuit of the strip, the third switch and fourth switch are connected to the second circuit of the strip, and the fifth switch and sixth switch are connected to the third circuit of the strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123149174.9U CN217135734U (en) | 2021-12-15 | 2021-12-15 | Multi-color LED lamp strip and driving circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123149174.9U CN217135734U (en) | 2021-12-15 | 2021-12-15 | Multi-color LED lamp strip and driving circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217135734U true CN217135734U (en) | 2022-08-05 |
Family
ID=82617232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123149174.9U Expired - Fee Related CN217135734U (en) | 2021-12-15 | 2021-12-15 | Multi-color LED lamp strip and driving circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217135734U (en) |
-
2021
- 2021-12-15 CN CN202123149174.9U patent/CN217135734U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220805 |