CN215871923U - Power-free high-voltage constant-current LED lamp strip - Google Patents
Power-free high-voltage constant-current LED lamp strip Download PDFInfo
- Publication number
- CN215871923U CN215871923U CN202121661677.1U CN202121661677U CN215871923U CN 215871923 U CN215871923 U CN 215871923U CN 202121661677 U CN202121661677 U CN 202121661677U CN 215871923 U CN215871923 U CN 215871923U
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- output end
- led lamp
- control chip
- current
- bridge stack
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A power-free high-voltage constant-current LED lamp strip comprises a sheath, a circuit board is wrapped in the sheath, a patch bridge stack DB, a control chip and an LED series unit which is formed by LED lamp beads in series and has working voltage of 220V are arranged on the circuit board, the patch bridge stack DB comprises two alternating current input ends, a positive output end and a negative output end which are respectively and electrically connected with the two connecting terminals, the control chip is provided with an anode and a constant current output end, a cathode end and an output current setting end, the anode of the LED series unit is connected to the anode output end of the patch bridge stack, the negative electrode of the control chip is connected to the positive electrode of the control chip and the constant current output end, the output current setting end of the control chip is electrically connected to the negative electrode output end of the patch bridge stack through a regulating resistor, and the negative electrode end of the control chip is electrically connected to the negative electrode output end of the patch bridge stack.
Description
Technical Field
The utility model relates to an LED lamp, and particularly discloses a power-free high-voltage constant-current LED lamp strip.
Background
The existing high-voltage LED lamp belt structure comprises a transparent outer skin, a circuit board is wrapped in the outer skin, and an LED lamp bead is installed on the circuit board and serves as a light source. Because the LED lamp beads are made of semiconductor materials, the LED lamp beads can only be conducted in a single direction and have nonlinear volt-ampere characteristics, a plurality of LED lamp beads and a plurality of resistors are connected in series in the conventional high-voltage LED lamp strip to form a series unit with the working voltage of 220V, and then an external direct-current power supply is adopted to convert 220V alternating-current mains supply into 220V direct-current power supply to supply power to the series unit. The existing high-voltage LED lamp strip needs an external direct-current power supply, so that the installation and the use are complex; the fluctuation of the mains supply voltage is large, so that the working voltage of the LED lamp bead is unstable and easy to age; and because the series unit needs to be connected with a resistor, the power consumption of the LED lamp strip is high, and the size of the circuit board is large.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a resistor-free high-voltage constant-current LED strip with simple installation and constant-current driving for solving the problems in the prior art.
In order to solve the prior art problems, the utility model discloses a power-free high-voltage constant-current LED lamp strip, which comprises a sheath, wherein a core wire is wrapped in the sheath, two power supply leads are embedded in the side wall of the core wire, a circuit board is arranged in the inner cavity of the core wire, two wiring terminals are arranged at the end part of the circuit board and are respectively electrically connected to the two power supply leads through leads, a patch bridge pile DB, a control chip and an LED series unit which is formed by connecting LED lamp beads in series and has the working voltage of 220V are arranged on the circuit board, the patch bridge pile DB comprises two alternating current input ends which are respectively and electrically connected with the two wiring terminals, an anode output end and a cathode output end, the control chip is provided with an anode and a constant-current output end, a cathode end and an output current setting end, the anode of the LED series unit is connected to the anode output end of the patch bridge pile, and the cathode of the LED series unit is connected to the anode and the constant-current output end of the control chip, the output current setting end of the control chip is electrically connected to the negative output end of the patch bridge stack through a regulating resistor, and the negative end of the control chip is electrically connected to the negative output end of the patch bridge stack.
The utility model has the beneficial effects that: because the LED lamp strip comprises a plurality of control units connected in parallel, each control unit is provided with a patch bridge stack, an LED series unit with the working voltage of 220V and a constant-current constant-temperature control chip for controlling the LED series unit, an external direct-current power supply is not needed, the constant-current power supply is adopted, the LED lamp beads are stably supplied with power, the connection of resistance protection is not needed, the power consumption of the LED lamp strip can be reduced, the circuit is simplified, and the space of a circuit board is saved.
Drawings
Fig. 1 is a schematic view of a lamp strip structure in embodiment 1 of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is a schematic circuit structure of the present invention.
Detailed Description
For further understanding of the features and technical means, as well as the specific objects and functions of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 to 3. The utility model provides a exempt from power high pressure constant current LED lamp area, has transparent crust 1, and the parcel has transparent heart yearn 2 that has the inner chamber in the crust 1, and 2 lateral walls of heart yearn have buried two power wire 21 underground, and 2 inner chambers of heart yearn are provided with the circuit board 3 that multistage length is 0.5 meters, and 3 tip of circuit board are provided with two binding post 31, two binding post 31 are connected to through lead wire 30 electricity respectively two power wire 21. Electronic components such as a patch bridge rectifier DB, an LED lamp bead 4 and a control chip IC are welded on the circuit board 3.
Refer to fig. 3. A power-free high-voltage constant-current LED lamp strip circuit. The circuit board 3 is provided with a plurality of control units L connected in parallel, and each control unit L comprises an LED series unit 41 formed by connecting a plurality of LED lamp beads in series, a patch bridge pile DB and two control chips IC. The patch bridge DB has two ac inputs electrically connected to the connection terminals 31, respectively. A positive input terminal and a negative output terminal. The LED series unit 41 is composed of: the LED lamp bead parallel connection unit 40 is formed by connecting two LED lamp beads 4 in parallel, and then the LED series connection unit 41 with the working voltage of 220V is formed by connecting a plurality of parallel connection units 40 in series. Therefore, even if one of the LED lamp beads 4 is disconnected, the control unit can still work normally. The control chip IC comprises an anode and a constant current output end OUT, a cathode end GND and an output current setting end REXT.
The anode of the LED series unit 41 is connected to the anode output terminal of the patch bridge DB, and the cathode thereof is connected to the anodes of the two control chips IC and the constant current output terminal OUT. And the negative end GND of the control chip IC is connected to the negative output end of the patch bridge stack DB. And an output current setting end REXT of the control chip IC is connected to a negative output end of the patch bridge stack DB through a regulating resistor R. Owing to set up two control chip ICs, can improve more high-power on the one hand, drive more LED lamp pearls, even one of them control chip damages on the other hand, this the control unit still can normally work.
Because the LED lamp strip comprises a plurality of control units connected in parallel, each control unit is provided with a patch bridge stack, an LED series unit with the working voltage of 220V and a constant-current constant-temperature control chip for controlling the LED series unit, an external direct-current power supply is not needed, the constant-current power supply is adopted, the LED lamp beads are stably supplied with power, the connection of resistance protection is not needed, the power consumption of the LED lamp strip can be reduced, the circuit is simplified, and the space of a circuit board is saved. The arbitrary shear of the utility model comprises one or more control units, and the arbitrary shear can work by being connected to 220V alternating current commercial power.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. The utility model provides a exempt from power high pressure constant current LED lamp area, includes the crust, wraps up the heart yearn in the crust, and two power wires have been buried underground to the heart yearn lateral wall, and the heart yearn inner chamber is provided with the circuit board, and circuit board tip is provided with two binding post, two binding post are connected to through the lead wire electricity respectively two power wires, its characterized in that: the LED lamp is characterized in that a patch bridge stack, a control chip and an LED series unit which is formed by connecting LED lamp beads in series and has working voltage of 220V are arranged on the circuit board, the patch bridge stack comprises two alternating current input ends, an anode output end and a cathode output end, the two alternating current input ends are respectively electrically connected with the two wiring terminals, the control chip is provided with an anode output end and a constant current output end, the cathode end and an output current setting end, the anode of the LED series unit is connected to the anode output end of the patch bridge stack, the cathode of the LED series unit is connected to the anode output end and the constant current output end of the control chip, the output current setting end of the control chip is electrically connected to the cathode output end of the patch bridge stack through a regulating resistor, and the cathode end of the control chip is electrically connected to the cathode output end of the patch bridge stack.
2. The power-free high-voltage constant-current LED lamp strip according to claim 1, wherein: the LED series unit comprises a parallel unit formed by connecting two LED lamp beads in parallel, and the parallel units are connected in series.
3. The power-free high-voltage constant-current LED lamp strip according to claim 1, wherein: the LED control circuit comprises two control chips, wherein the cathodes of the LED series units are connected to the anodes and the constant current output ends of the two control chips, the output current setting ends of the two control chips are electrically connected to the cathode output end of the patch bridge stack through adjusting resistors, and the cathode ends of the two control chips are electrically connected to the cathode output end of the patch bridge stack.
4. The power-free high-voltage constant-current LED lamp strip according to claim 1, wherein: the core wire is internally wrapped with a plurality of sections of circuit boards, and two wiring terminals of each circuit board are electrically connected to the two power supply wires through leads respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121661677.1U CN215871923U (en) | 2021-07-21 | 2021-07-21 | Power-free high-voltage constant-current LED lamp strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121661677.1U CN215871923U (en) | 2021-07-21 | 2021-07-21 | Power-free high-voltage constant-current LED lamp strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215871923U true CN215871923U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121661677.1U Active CN215871923U (en) | 2021-07-21 | 2021-07-21 | Power-free high-voltage constant-current LED lamp strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215871923U (en) |
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2021
- 2021-07-21 CN CN202121661677.1U patent/CN215871923U/en active Active
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