High-voltage drive-free stroboscopic-free monochrome LED lamp strip

Abstract

The utility model discloses a high pressure exempts from drive no stroboscopic monochrome LED lamp area, including the skin, the skin is wrapped with the core line, is provided with two wires in the core line, is installed with a plurality of circuit boards in the core line, is provided with rectifier module, power module and a plurality of luminous module on each circuit board, rectifier module's input end is connected to two wires, rectifier module converts 220V's alternating -current commercial power to 220V's direct current and exports power module, and power module converts 220V's direct current to low -voltage direct current and exports a plurality of low -voltage luminous module, and luminous module includes a plurality of working voltage 3V's LED lamp pearl series connection, a plurality of luminous module are connected to the output end of power module in parallel, and the power module on every two circuit boards is parallel to the power supply of all luminous module on two circuit boards, and the both ends of two circuit boards are through the conduction of conductor splicing. The utility model has the advantages such as small circuit voltage drop, shearing position is flexible.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of LED lamps, specifically discloses a high-pressure drive-free single-color LED light strip without frequency flicker. BACKGROUND

[0002] Low-voltage LED light strip refers to the working voltage of 36V below LED light strip, contrary, the working voltage of more than 36V LED light strip, can be called high-voltage LED light strip. Traditional low-voltage LED light strip, adopt external power supply to convert 240V AC mains into low-voltage DC, through copper foil circuit on circuit board transmission to multiple light emitting modules. The working voltage of light emitting module is below 36V, is connected by multiple working voltage 3V LED lamp bead series connection, a light emitting module as minimum shear unit. Since adopting low-voltage power supply, copper foil circuit on circuit board is relatively thin, pressure drop is relatively large, the length of light strip (light emitting module quantity) reaches certain degree, tail light emitting module cannot maintain normal work, causes light strip overall light emitting uneven. Traditional high-voltage LED light strip includes multiple circuit boards, the LED lamp bead on each circuit board is all connected in series to form light emitting module with working voltage 220V, multiple circuit boards are sleeved in core wire, and power supply wire is arranged in core wire. Traditional high-voltage LED light strip solves the problem of pressure drop to a certain extent due to wire power supply, but since the working voltage of each light emitting module is 240V, it is necessary to adopt more LED lamp beads in series, and the length of light emitting module on the circuit board is relatively long, and the LED light strip must be one light emitting module as minimum shear unit, which causes the size of light strip shear to be not flexible, and the use is not convenient. CONTENT OF UTILITY MODEL

[0003] Therefore, it is necessary to provide a high-pressure drive-free single-color LED light strip without frequency flicker with small pressure drop, long-distance brightness uniformity, flexible shear, convenient use and simple circuit based on the problems of the prior art.

[0004] To solve the problems of the prior art, the utility model discloses a high-pressure drive-free single-color LED light strip without frequency flicker, including skin, and the skin is wrapped with core wire, and two wires are arranged in the core wire, and multiple circuit boards are installed in the core wire, and each circuit board is provided with rectifier module, power module and multiple light emitting modules, the input end of rectifier module is connected to the two wires, and rectifier module converts 220V AC mains into 220V DC and outputs to the power module, and the power module converts 220V DC into low-voltage DC and outputs to the multiple light emitting modules, and the light emitting module includes a plurality of series-connected LED lamp beads, and the multiple light emitting modules are connected in parallel to the output end of the power module, and the power modules on every two circuit boards are connected in parallel to supply power to all light emitting modules on the two circuit boards, and the two ends of the two circuit boards are connected by conductor splicing.

[0005] The utility model discloses beneficial effect is: the utility model discloses in the LED lamp area through the transmission 220V high voltage alternating current of wire, circuit voltage loss is little, and because the high voltage alternating current is converted into low voltage direct current for each parallel light emitting module work through rectifier module and power module on the circuit board, and the power module on every two circuit boards is parallel to supply power to all light emitting modules on the two circuit boards, and the lamp area can take one light emitting module in the circuit board as the minimum shear unit, and the number of LED lamp pearl contained in the light emitting module is less, and the shear unit is short, and the shear size is more flexible.

[0006] The utility model discloses further improvement can be as follows: the rectifier module is the patch bridge heap, and the patch bridge heap has two alternating current input and two direct current output, two alternating current input is connected to two wires, and two direct current output includes power supply positive pole and power supply negative pole, and first capacitor is connected between power supply positive pole and power supply negative pole, the power module includes power supply chip, and power supply chip includes drain foot, feedback foot, power supply foot, source electrode foot, drain foot is connected to power supply positive pole, and source electrode foot is connected to the negative pole of chopper inductance, and the negative pole of chopper inductance is connected to power supply negative pole through freewheeling diode, and power supply foot is connected to source electrode foot through second capacitor, and feedback foot is connected to source electrode foot through first resistance, and is connected to the positive pole of chopper inductance through the series connection of second resistance and second diode, and second resistance is connected to source electrode foot through third capacitor, and parallel electrolytic capacitor and third resistance are connected between the positive pole of chopper inductance and power supply negative pole, and the positive pole of light emitting module is connected to the positive pole of chopper inductance, and the negative pole of light emitting module is connected to power supply negative pole, and the positive pole of chopper inductance and power supply negative pole on two circuit boards are electrically connected respectively. The rectifier module and power module on two circuit boards are arranged at the non-splicing one end of the circuit board. The working voltage of light emitting module is 18V, and is connected in series by six LED lamp pearls with 3V working voltage and resistance. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the structure schematic drawing of the utility model LED lamp area.

[0008] Figure 2 It is the structure schematic drawing of two parallel power supply circuit boards of the utility model.

[0009] Figure 3 It is the structure schematic drawing of two parallel power supply circuit boards of the utility model.

[0010] Figure 4 It is the circuit schematic diagram of the utility model.

[0011] Figure 5 It is the circuit diagram of two parallel power supply circuit boards of the utility model. DETAILED DESCRIPTION

[0012] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments. In the following description, when a certain electronic component is mainly used as a power consumption component, the positive electrode is the current inflow end, and the negative electrode is the current outflow end; when a certain electronic component is mainly used as a power supply component, the positive electrode is the current outflow end, and the negative electrode is the current inflow end.

[0013] Reference Figure 1 A high-voltage drive-free stroboscopic-free monochrome LED lamp strip, comprising an outer skin 1, the outer skin 1 is provided with a core wire 2, two wires 3 are arranged in the core wire 2, a plurality of circuit boards 4 are installed in the core wire 2, and LED lamp beads 5 are arranged on the circuit boards 4. The circuit board 4 is electrically connected with the wire 3 through a lead wire 6.

[0014] Reference Figures 2 to 4 The circuit on each circuit board comprises a rectifier module DB, a power supply module S and a plurality of light emitting modules 50. The input end of the rectifier module DB is connected to the wire 13 as a live wire circuit and a zero line circuit, and 220V alternating current commercial power is converted into 220V high-voltage direct current and output to the power supply module S. The power supply module S converts 220V direct current into 18V low-voltage direct current and outputs to the plurality of light emitting modules 50. The working voltage of the light emitting module 50 is 18V, which is connected in series with six LED lamp beads 5 with a working voltage of 3V and a resistor R, and the plurality of light emitting modules 50 are connected in parallel to the output end of the power supply module S. By adjusting the number of LED lamp beads 5 connected in series, the working voltage of the light emitting module 50 can also be 12V or 24V or 36V. The power supply modules S on every two circuit boards are connected in parallel to supply power to all the light emitting modules 50 on the two circuit boards, that is, from the first end of the LED lamp strip, the power supply modules S on the odd circuit board 41 with odd serial numbers and the even circuit board 42 with even serial numbers are connected in parallel, and so on. The first end and the second end of the two circuit boards 41 / 42 are spliced and conducted through a conductor such as solder paste or a lead wire.

[0015] The utility model discloses a high-voltage drive-free stroboscopic-free monochrome LED lamp strip, comprising an outer skin 1, the outer skin 1 is provided with a core wire 2, two wires 3 are arranged in the core wire 2, a plurality of circuit boards 4 are installed in the core wire 2, and LED lamp beads 5 are arranged on the circuit boards 4. The circuit board 4 is electrically connected with the wire 3 through a lead wire 6.

[0016] refer to Figure 2 If both the rectifier module DB and the power supply module S are located on the left side of the circuit board, when the cutting position falls within the odd-numbered circuit board 41, all the light-emitting modules 50 at both ends of the cutting opening are electrically connected and can be used normally; when the cutting position falls within the even-numbered circuit board 42, the light-emitting modules S on the right side of the even-numbered circuit board 42 cannot be lit because they are not electrically connected. Therefore, this implementation method can only achieve conditional flexible cutting of the LED strip. As a further improvement of this utility model, see reference... Figure 3 The rectifier module DB and power supply module S are located at the non-joined end of circuit board 4. That is, on odd-numbered circuit boards 41, the rectifier module DB and power supply module S are located at the beginning of the circuit board, and on even-numbered circuit boards 42, the rectifier module DB and power supply module S are located at the end of the circuit board. In this way, regardless of whether the cutting position falls on the odd-numbered circuit board 41 or the even-numbered circuit board 42, all light-emitting modules S at both ends of the cutting point are electrically connected, allowing for unconditional and arbitrary cutting, and making the cutting position more flexible.

[0017] refer to Figure 5The rectifier module DB is a patch bridge stack, the patch bridge stack has two AC input ends connected to the two wires 3 through the lead wire 6 and two DC output ends including a power supply positive pole V+ and a power supply negative pole V-, and the power supply positive pole V+ and the power supply negative pole V- are connected with a first capacitor C1. The power supply module S includes a power supply chip IC, the power supply chip IC includes a drain foot DIN, a feedback foot FB, a power supply foot VCC and a source foot S. The drain foot DIN is connected to the power supply positive pole V+. The drain foot DIN is a source contact point of a built-in power MOS tube of the chip, and is used for starting the power supply chip and providing internal operating current. The source foot S is connected to the negative pole of a chopper inductor L, the negative pole of the chopper inductor L is connected to the power supply negative pole V- through a continuous conduction diode D1. The source foot S is a source connection point of a built-in MOS tube of the chip, and is also a grounding reference of the bypass and feedback foot FB. The chopper inductor L is used for outputting 18V low-voltage DC power for the light emitting module 50 to work. The power supply foot VCC is connected to the source foot S through a second capacitor C2, and the second capacitor C2 is used for supplying power after the power supply chip is started. The feedback foot FB is connected to the source foot S through a first resistor R1, and is connected to the positive pole of the chopper inductor L through a second resistor R2 and a second diode D2 connected in series, and the second resistor R2 is further connected to the source foot S through a third capacitor C3. The first resistor R1 and the second resistor R2 are comparison sampling resistors of the feedback foot FB, and the output voltage of the power supply module S can be adjusted by adjusting the voltage division ratio of the first resistor and the second resistor and the inductance of the chopper inductor L. The third capacitor C3 prevents the sampling signal from being disturbed by a spike voltage and a ripple voltage, and the second diode D2 prevents the sampling signal and the subsequent circuit from interfering with each other. The positive pole of the chopper inductor is connected with the power supply negative pole V- through a parallelly connected electrolytic capacitor EC1 and a third resistor R3. The positive pole of the light emitting module 50 is connected to the positive pole of the chopper inductor L, and the negative pole of the light emitting module 50 is connected to the power supply negative pole V-. The positive pole of the chopper inductor L on the single circuit board 41 is connected to the positive pole of the chopper inductor L on the double circuit board 42, and the power supply negative pole V- on the single circuit board 41 is connected to the power supply negative pole V- on the double circuit board 42.

[0018] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the patent scope of the present application. It is pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A high-voltage, driver-free, flicker-free monochrome LED light strip, comprising an outer sheath, a core wire wrapped inside the outer sheath, two conductors disposed within the core wire, and multiple circuit boards mounted within the core wire, each circuit board comprising a rectifier module, a power supply module, and multiple light-emitting modules, characterized in that: The input end of the rectifier module is connected to the two wires, and the rectifier module converts 220V AC power into 220V DC output to the power module. The power module converts 220V DC into low-voltage DC output to the plurality of light emitting modules. The light emitting module includes a plurality of series-connected LED lamp beads. The plurality of light emitting modules are connected in parallel to the output end of the power module. The power modules on the two circuit boards are connected in parallel to supply power to all light emitting modules on the two circuit boards. The two ends of the two circuit boards are connected by conductors.

2. The high-voltage driverless single-color strobe-free LED light strip of claim 1, wherein: The rectifier module is a patch bridge stack with two AC input ends and two DC output ends. The two AC input ends are connected to the two wires, and the two DC output ends include a power positive electrode and a power negative electrode. The power positive electrode and the power negative electrode are connected with a first capacitor. The power module includes a power chip, which includes a drain foot, a feedback foot, a power foot, and a source foot. The drain foot is connected to the power positive electrode, and the source foot is connected to the negative electrode of the chopper inductance. The negative electrode of the chopper inductance is connected to the power negative electrode through a freewheeling diode. The power foot is connected to the source foot through a second capacitor. The feedback foot is connected to the source foot through a first resistor and connected to the positive electrode of the chopper inductance through a series-connected second resistor and second diode. The second resistor is connected to the source foot through a third capacitor. The positive electrode of the chopper inductance and the power negative electrode are connected with a parallel-connected electrolytic capacitor and third resistor. The positive electrode of the light emitting module is connected to the positive electrode of the chopper inductance, and the negative electrode of the light emitting module is connected to the power negative electrode. The positive electrode of the chopper inductance and the power negative electrode on the two circuit boards are electrically connected.

3. The high-voltage driverless single-color strobe-free LED light strip of claim 1, wherein: The rectifier module and the power module on the two circuit boards are arranged at the non-splicing end of the circuit board.

4. The high-voltage driverless single-color strobe-free LED light strip of claim 1, wherein: The working voltage of the light emitting module is 18V, which is composed of six LED lamp beads with a working voltage of 3V and a resistor connected in series.

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