CN220823316U - Voltage drop-free lamp strip circuit and lamp strip - Google Patents
Voltage drop-free lamp strip circuit and lamp strip Download PDFInfo
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- CN220823316U CN220823316U CN202322393491.8U CN202322393491U CN220823316U CN 220823316 U CN220823316 U CN 220823316U CN 202322393491 U CN202322393491 U CN 202322393491U CN 220823316 U CN220823316 U CN 220823316U
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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Abstract
The utility model discloses a voltage drop-free lamp strip circuit and a lamp strip, and relates to the field of LED lamp strips, comprising a power supply module, wherein the power supply module comprises a power supply anode, an anode wire, a power supply cathode, a cathode wire and a cathode return wire; the positive electrode wire is connected with the positive electrode of the power supply, one end of the negative electrode wire is connected with the negative electrode of the power supply, and the other end of the negative electrode wire is connected with the negative electrode return wire; the light-emitting module comprises a plurality of light-emitting units, wherein the anodes of the light-emitting units are connected with the positive electrode wire, the cathodes of the light-emitting units are connected with the negative electrode wire or the negative electrode return wire, and the light-emitting units are sequentially connected in parallel; the negative electrode of the light-emitting unit close to the positive electrode of the power supply is connected with the negative electrode return line, and the negative electrode of the light-emitting unit far away from the positive electrode of the power supply is connected with the negative electrode line. The utility model can improve the problem of voltage drop at the tail end of the lamp strip and improve the consistency of the overall brightness of the lamp strip.
Description
Technical Field
The utility model relates to the technical field of LED (light emitting diode) lamp strips, in particular to a voltage drop-free lamp strip circuit and a lamp strip.
Background
The LED line lamp is a high-end flexible decorative lamp and is characterized by low power consumption, long service life, high brightness, easy bending, no maintenance and the like. Is especially suitable for indoor and outdoor entertainment places, building contour sketching, billboard manufacturing and the like. Line lamps with different specifications can be customized according to the requirements of customers.
At present, a constant voltage drive is used for a lamp strip, and a constant voltage source is provided with 12V, 24V, 36V and the like to drive the lamp strip to emit light, the lamp strip adopts a multi-string multi-parallel mode, and each string of lamp string is connected with a current limiting resistor. Referring to fig. 1, the lamp strip circuit uses a 12V constant voltage source as a driving power supply, adopts a multi-string multi-parallel mode, and connects a current-limiting resistor to a 12V power supply after four lamp beads are connected in series in each string of lamp strings. The length of the lamp strip can be cut according to actual use, and the lamp strip with infinite length can be manufactured. Because the lamp strip length is longer, and the width is limited, leads to the positive negative pole of power to walk the line copper sheet narrower, and line impedance is off high, then when the lamp strip reaches certain length, the one end of keeping away from the power can appear dropping, and the luminance of lamp strip can reduce along with lamp strip length gradually. For example, the constant voltage source is 24V's lamp strip, and every cluster lamp cluster adopts seven lamp pearls and current-limiting resistor to establish ties, then inserts 24V constant voltage source and lights, because the restriction of lamp strip width, the positive negative pole wiring of power is narrow, and the line resistance is great, and the voltage of keeping away from the power end can drop to 23V even lower, makes the whole luminance difference of lamp strip great.
Accordingly, there is a need for improvement and development in the art.
Disclosure of utility model
The application aims to solve the technical problems that aiming at the defects in the prior art, the application provides a voltage drop-free light bar circuit and a light bar, and aims to solve the problem that the integral brightness is inconsistent due to voltage drop at one end of the existing light bar far away from a power supply.
In a first aspect, the present application provides a voltage drop-free light bar circuit, which adopts the following technical scheme:
A no-voltage drop light bar circuit comprising:
The power supply module comprises a power supply anode, an anode wire, a power supply cathode, a cathode wire and a cathode return wire; the positive electrode wire is connected with the positive electrode of the power supply, one end of the negative electrode wire is connected with the negative electrode of the power supply, and the other end of the negative electrode wire is connected with the negative electrode return wire;
The light-emitting module comprises a plurality of light-emitting units, wherein the anodes of the light-emitting units are connected with the positive electrode wire, the cathodes of the light-emitting units are connected with the negative electrode wire or the negative electrode return wire, and the light-emitting units are sequentially connected in parallel; the negative electrode of the light-emitting unit close to the positive electrode of the power supply is connected with the negative electrode return line, and the negative electrode of the light-emitting unit far away from the positive electrode of the power supply is connected with the negative electrode line.
Further, the positive electrode and the negative electrode of the light-emitting unit are provided with first connecting holes, the positive electrode wire, the negative electrode wire and the negative electrode return wire are provided with second connecting holes, and the first connecting holes are correspondingly connected with the second connecting holes.
Further, the light-emitting unit comprises a plurality of light-emitting diodes and a current-limiting resistor;
One end of the current limiting resistor is used as the positive electrode of the light emitting unit and is connected with the positive electrode wire, the other end of the current limiting resistor is connected with the positive electrode of the light emitting diode, a plurality of light emitting diodes are connected in series, and the negative electrode of the light emitting diode is used as the negative electrode of the light emitting unit and is connected with the negative electrode wire or the negative electrode return wire.
Further, the number of the light emitting diodes ranges from 4 to 12.
Further, the diameters of the first connecting hole and the second connecting hole are in the range of 0.2-0.4 mm.
Further, the negative electrode wire is connected with the negative electrode return wire in a welding mode.
Further, the voltage provided by the power supply module is 12V, 24V or 36V.
In a second aspect, the application provides a voltage-drop-free light bar, which adopts the following technical scheme:
A voltage drop free light bar comprising:
a light emitting panel;
a power panel;
the power panel is positioned on the back of the light-emitting panel and is electrically connected with the light-emitting panel;
A no-voltage drop light bar circuit as described above; the light-emitting panel is integrated with a light-emitting module, and the power panel is integrated with a power module.
The utility model has the beneficial effects that: according to the utility model, the negative electrode return line is added, so that the negative electrode (the front end of the lamp strip) of the light-emitting unit close to the positive electrode of the power supply can be connected with the negative electrode return line, and the negative electrode (the tail end of the lamp strip) of the light-emitting unit far away from the positive electrode of the power supply is connected with the negative electrode line, so that the wire connection lengths of the front end and the tail end (with the power supply module) of the lamp strip are consistent, the problem of voltage drop of the tail end of the lamp strip is solved, and the consistency of the overall brightness of the lamp strip is improved. And the power supply module and the light-emitting module are arranged separately, namely on different circuit boards, so that the interval between the positive electrode and the negative electrode of the power supply can be wider, and the line impedance is reduced.
Drawings
Fig. 1 is a schematic circuit diagram of a conventional light bar circuit.
Fig. 2 is a schematic circuit diagram of a voltage drop-free light bar circuit according to an embodiment of the present application.
Fig. 3 is a schematic diagram of the front end of a voltage drop-free light bar circuit according to an embodiment of the present application.
Fig. 4 is an end schematic diagram of a voltage drop free light bar circuit according to an embodiment of the present application.
Reference numerals: 1. a power module; 11. a power supply positive electrode; 12. a power supply negative electrode; 13. a positive line; 14. a negative electrode line; 15. a negative electrode return line; 16. a second connection hole; 2. a light emitting module; 21. a light emitting unit; 211. a light emitting diode; 212. a current limiting resistor; 213. a first connection hole.
Detailed Description
The application discloses a voltage-drop-free light bar circuit and a light bar, which are used for making the purposes, technical schemes and effects of the application clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
As shown in fig. 2, an embodiment of the present application discloses a voltage drop-free light bar circuit, which includes: the power module 1, the power module 1 comprises a power positive electrode 11, a positive electrode wire 13, a power negative electrode 12, a negative electrode wire 14 and a negative electrode return wire 15; the positive electrode line 13 is connected to the positive electrode 11 of the power supply, one end of the negative electrode line 14 is connected to the negative electrode 12 of the power supply, and the other end of the negative electrode line 14 is connected to the negative electrode return line 15.
The light emitting module 2, the light emitting module 2 includes a plurality of light emitting units 21, the positive poles of the plurality of light emitting units 21 are connected with the positive pole wire 13, the negative poles of the plurality of light emitting units 21 are connected with the negative pole wire 14 or the negative pole return wire 15, and the plurality of light emitting units 21 are connected in parallel in sequence. Referring to fig. 3 and 4, the negative electrode of the light emitting unit 21 close to the power supply positive electrode 11 is connected to the negative electrode return line 15, and the negative electrode of the light emitting unit 21 far from the power supply positive electrode 11 is connected to the negative electrode line 14.
It can be understood that by adding the arrangement of the negative electrode return line 15, the negative electrode (the front end of the light bar) of the light emitting unit 21 close to the positive electrode 11 of the power supply can be connected with the negative electrode return line 15, the negative electrode (the rear end of the light bar) of the light emitting unit 21 far away from the positive electrode 11 of the power supply is connected with the negative electrode line 14, and then the wire connection length of each light emitting unit 21 and the power supply module 1 is consistent, and the wire resistance is consistent, so that the problem of voltage drop at the tail end of the light bar is solved, and the consistency of the overall brightness of the light bar is improved. And the power supply module 1 and the light emitting module 2 are separately arranged, namely, are positioned on different circuit boards, the interval between the positive electrode and the negative electrode of the power supply can be wider, and thus the line impedance is reduced.
In some embodiments, referring to fig. 4, it can be seen at the end of the light bar circuit that the negative electrode line 14 and the negative electrode return line 15 are connected by welding. The operation is simple, and at the same time, the electrical connection between the negative electrode line 14 and the negative electrode return line 15 can be achieved.
In some embodiments, referring to fig. 2, the positive electrode and the negative electrode of the light emitting unit 21 are each provided with a first connection hole 213, and the positive electrode line 13, the negative electrode line 14, and the negative electrode return line 15 are each provided with a second connection hole 16, and the first connection hole 213 and the second connection hole 16 are welded correspondingly.
It is to be understood that the positive electrode line 13, the negative electrode line 14, and the negative electrode return line 15 are referred to as power supply lines in the present application. The second connection hole 16 is formed by performing hole digging treatment on the positive electrode line 13, the negative electrode line 14 and the negative electrode return line 15, and then the first connection hole 213 at the positive electrode and the negative electrode of the light emitting unit 21 is correspondingly welded with the power line to realize electric connection (the first connection hole 213 of the positive electrode and the negative electrode of the light emitting unit 21 is correspondingly welded with the second connection hole 16 of the positive electrode line 13, the negative electrode line 14 and the negative electrode return line 15), so that the connection line length of each light emitting unit 21 and the power line is consistent, and the possibility is provided for eliminating voltage drop. The diameters of the first connecting hole 213 and the second connecting hole 16 are in a range of 0.2-0.4 mm, and the external pad of the first connecting hole 213 and the second connecting hole 16 can be in a range of 0.35-0.55 mm, and the shape can be square or round, specifically referring to the via way of the PCB board.
In some embodiments, referring to fig. 2, the light emitting unit 21 includes a plurality of light emitting diodes 211 and a current limiting resistor 212, one end of the current limiting resistor 212 is used as the positive electrode of the light emitting unit 21 to be connected to the positive electrode line 13, the other end of the current limiting resistor 212 is connected to the positive electrode of the light emitting diode 211, the plurality of light emitting diodes 211 are connected in series, and the negative electrode of the light emitting diode 211 is used as the negative electrode of the light emitting unit 21 to be connected to the negative electrode line 14 or the negative electrode return line 15. Specifically, the number of the light emitting diodes 211 ranges from 4 to 12, and the voltage provided by the power module 1 is 12V, 24V or 36V. It is clear that the number of light emitting diodes 211 in the present application is seven, and the voltage supplied from the power module 1 is 24V.
In some embodiments, embodiments of the present application further provide a voltage drop free light bar comprising:
The light-emitting board, the power panel and the voltage-drop-free lamp strip circuit are arranged in the circuit;
The power panel is positioned on the back of the light-emitting panel and is electrically connected with the light-emitting panel. Wherein, integrate the light-emitting module 2 on the luminescent plate, integrate the power module 1 on the power strip.
It can be appreciated that by separately arranging the light-emitting panel and the power panel, the width of the power panel is not limited by the light-emitting panel, so that the interval between the anode and the cathode of the power panel can be widened to reduce the line transmission impedance. Meanwhile, the voltage drop-free light bar circuit is integrated on the light-emitting plate and the power panel, so that the voltage drop problem at the tail end of the light bar is improved, and the consistency of the overall brightness of the light bar is improved. When the LED lamp is specifically used, the luminous plate is an FPC board, and the power panel is bent and arranged on the back of the luminous surface of the FPC board, so that the luminous plate and the luminous plate are separately arranged and matched for use.
Compared with the prior art, the utility model has the following advantages:
1. According to the application, the negative electrode return line 15 is added, so that the negative electrode (the front end of the lamp strip) of the light-emitting unit 21 close to the positive electrode 11 of the power supply can be connected with the negative electrode return line 15, and the negative electrode (the tail end of the lamp strip) of the light-emitting unit 21 far away from the positive electrode 11 of the power supply is connected with the negative electrode line 14, so that the wire connection lengths of the front end and the tail end (with the power supply module 1) of the lamp strip are consistent, the problem of voltage drop of the tail end of the lamp strip is solved, and the consistency of the overall brightness of the lamp strip is improved.
2. The application enables the width of the power panel integrated with the power module 1 to be wider by arranging the light-emitting panel and the power panel separately, so that the distance between the positive electrode and the negative electrode of the power supply is widened, and the line transmission impedance is further reduced.
3. By forming the first connection hole 213 on the light emitting unit 21 and the second connection hole 16 on the power line, the electrical connection between the light emitting unit 21 and the power line is achieved, and the operation is simple and easy to achieve.
It is to be understood that the application is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (8)
1. A voltage drop free light bar circuit comprising:
The power supply module comprises a power supply anode, an anode wire, a power supply cathode, a cathode wire and a cathode return wire; the positive electrode wire is connected with the positive electrode of the power supply, one end of the negative electrode wire is connected with the negative electrode of the power supply, and the other end of the negative electrode wire is connected with the negative electrode return wire;
The light-emitting module comprises a plurality of light-emitting units, wherein the anodes of the light-emitting units are connected with the positive electrode wire, the cathodes of the light-emitting units are connected with the negative electrode wire or the negative electrode return wire, and the light-emitting units are sequentially connected in parallel;
The negative electrode of the light-emitting unit close to the positive electrode of the power supply is connected with the negative electrode return line, and the negative electrode of the light-emitting unit far away from the positive electrode of the power supply is connected with the negative electrode line.
2. The voltage drop-free light bar circuit of claim 1, wherein the positive electrode and the negative electrode of the light emitting unit are provided with first connecting holes, the positive electrode wire, the negative electrode wire and the negative electrode return wire are provided with second connecting holes, and the first connecting holes are correspondingly connected with the second connecting holes.
3. The voltage drop less light bar circuit of claim 1, wherein the light emitting unit comprises a plurality of light emitting diodes and a current limiting resistor;
One end of the current limiting resistor is used as the positive electrode of the light emitting unit and is connected with the positive electrode wire, the other end of the current limiting resistor is connected with the positive electrode of the light emitting diode, a plurality of light emitting diodes are connected in series, and the negative electrode of the light emitting diode is used as the negative electrode of the light emitting unit and is connected with the negative electrode wire or the negative electrode return wire.
4. The voltage drop less light bar circuit of claim 3 wherein the number of light emitting diodes ranges from 4 to 12.
5. The voltage drop less light bar circuit of claim 2, wherein the first and second connection holes have a diameter in the range of 0.2-0.4 mm.
6. The no-drop light bar circuit of claim 1, wherein the negative line is connected to the negative return line by welding.
7. The no-voltage drop light bar circuit of claim 1, wherein the voltage provided by the power module is 12V, 24V, or 36V.
8. A voltage drop free light bar comprising:
a light emitting panel;
a power panel;
the power panel is positioned on the back of the light-emitting panel and is electrically connected with the light-emitting panel;
And a no-voltage drop light bar circuit as recited in any one of claims 1-7; the light-emitting panel is integrated with a light-emitting module, and the power panel is integrated with a power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322393491.8U CN220823316U (en) | 2023-09-04 | 2023-09-04 | Voltage drop-free lamp strip circuit and lamp strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322393491.8U CN220823316U (en) | 2023-09-04 | 2023-09-04 | Voltage drop-free lamp strip circuit and lamp strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220823316U true CN220823316U (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322393491.8U Active CN220823316U (en) | 2023-09-04 | 2023-09-04 | Voltage drop-free lamp strip circuit and lamp strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220823316U (en) |
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2023
- 2023-09-04 CN CN202322393491.8U patent/CN220823316U/en active Active
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