Two-line horse race lamp strip

Abstract

The utility model provides a two-wire horse race lamp strip which comprises a stable voltage circuit, a two-wire LED lamp string, an MOS tube Q1, a control MCU U2, an IO port output resistor R5, an IO port output resistor R6, a pull-down resistor R7, a pull-down resistor R8, an MCU voltage sampling pull-up resistor R3, a pull-down resistor R4, an MCU signal input resistor R10 and an MCU signal output resistor R9, the two-wire LED lamp string comprises a lamp string LED-Y capable of emitting a first color temperature and a lamp string LED-W capable of emitting a second color temperature, and the MOS tube Q1 is a double-N-channel MOS tube. The two-wire horse race lamp strip has the advantages that color temperature control can be achieved, different color temperatures can be lightened in different scenes, only two wires need to be welded, and the two-wire horse race lamp strip can penetrate through a small wire passing hole.

Description

Technical Field

[0001] The utility model relates to a lighting device, in particular to a two-line marquee light strip. Background Art

[0002] Marquee strips are also called moving lights and string lights. Marquee strips are a kind of lighting device installed in buildings or shopping malls to show the outline of objects. Marquee strips are gradually being used in festivals. In order to increase the festive atmosphere, the lighting methods of marquee strips have also been designed in a variety of ways to meet different usage requirements.

[0003] The existing marquee light strip cannot achieve color temperature control and cannot light up different color temperatures in different scenarios. In addition, the existing marquee light strip requires welding three wires. If the wire hole is small, it is difficult to pass through. Summary of the Invention

[0004] In order to solve the problems in the prior art, the utility model provides a two-line marquee light strip.

[0005] The utility model provides a two-wire marquee light strip, including a voltage regulating circuit, a two-wire LED light string, a MOS tube Q1, a control MCU U2, an IO port output resistor R5, an IO port output resistor R6, a pull-down resistor R7, a pull-down resistor R8, an MCU voltage sampling pull-up resistor R3, a pull-down resistor R4, an MCU signal input resistor R10, and an MCU signal output resistor R9. The two-wire LED light string includes a light string LED-Y capable of emitting a first color temperature and a light string LED-W capable of emitting a second color temperature. The MOS tube Q1 is a dual N-channel MOS tube. The anodes of the light strings LED-Y and LED-W are respectively connected to a power supply voltage VCC. The cathodes of the light strings LED-Y and LED-W are respectively connected to the two drains of the MOS tube Q1. The two sources of the MOS tube Q1 are grounded. One of the gates of the MOS tube Q1 is connected to one end of the IO port output resistor R5 and one end of the pull-down resistor R7. The other end of the IO port output resistor R5 is connected to the control MCU. The MCU U2 is connected to pin 1, the other end of the pull-down resistor R7 is grounded, the other gate of the MOS transistor Q1 is connected to one end of the IO port output resistor R6 and one end of the pull-down resistor R8, the other end of the IO port output resistor R6 is connected to pin 6 of the control MCU U2, the other end of the pull-down resistor R8 is grounded, and pin 2 of the control MCU U2 is grounded. Pin 3 of the control MCU U2 is connected to one end of the MCU signal input resistor R10, and the other end of the MCU signal input resistor R10 is respectively connected to one end of the MCU voltage sampling pull-up resistor R3, one end of the pull-down resistor R4, and the MCU signal input terminal P2. The other end of the MCU voltage sampling pull-up resistor R3 is connected to the power supply voltage VCC, and the other end of the pull-down resistor R4 is grounded. Pin 4 of the control MCU U2 is connected to one end of the MCU signal output resistor R9, and the other end of the MCU signal output resistor R9 is connected to the MCU signal output terminal P5. The output terminal P5 is connected to the MCU signal input terminal P2 of the next group. Pin 5 of the control MCU U2 is connected to the voltage regulating circuit.

[0006] As a further improvement of the present invention, a voltage-dividing resistor R11 and a voltage-dividing resistor R2 are connected in series to the light string LED-Y.

[0007] As a further improvement of the present invention, a voltage dividing resistor R12 and a voltage dividing resistor R1 are connected in series to the light string LED-W.

[0008] As a further improvement of the present invention, the voltage stabilization circuit includes a voltage regulator U1, a diode D1, a filter capacitor C1, and a filter capacitor C2. Pin 1 of the voltage regulator U1 is grounded, pin 2 of the voltage regulator U1 is connected to pin 5 of the control MCU U2, pin 3 of the voltage regulator U1 is connected to the cathode of the diode D1, and the anode of the diode D1 is connected to the power supply voltage VCC. One end of the filter capacitor C1 is connected to pin 3 of the voltage regulator U1, and the other end of the filter capacitor C1 is grounded. One end of the filter capacitor C2 is connected to pin 2 of the voltage regulator U1, and the other end of the filter capacitor C2 is grounded.

[0009] The beneficial effect of the present invention is that: through the above solution, a two-wire marquee light strip is provided, which can realize color temperature control and can light up different color temperatures in different scenarios. Moreover, only two wires need to be welded, which is conducive to passing through smaller wire holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other solutions can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 This is the main circuit diagram of a two-wire marquee light strip of the utility model.

[0012] Figure 2 The utility model discloses a voltage stabilizing circuit diagram of a two-wire marquee light strip. DETAILED DESCRIPTION

[0013] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0015] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0016] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods.

[0017] like Figures 1 to 2As shown, a two-wire marquee light strip includes a voltage regulator circuit, a two-wire LED light string, a MOS transistor Q1, a control MCU U2, an IO port output resistor R5, an IO port output resistor R6, a pull-down resistor R7, a pull-down resistor R8, an MCU voltage sampling pull-up resistor R3, a pull-down resistor R4, an MCU signal input resistor R10, and an MCU signal output resistor R9. The two-wire LED light string includes a light string LED-Y capable of emitting a first color temperature and a light string LED-W capable of emitting a second color temperature. The MOS transistor Q1 is a dual N-channel MOS transistor. The anodes of the light strings LED-Y and LED-W are respectively connected to the power supply voltage VCC, the cathodes of the light strings LED-Y and LED-W are respectively connected to the two drains of the MOS transistor Q1, the two sources of the MOS transistor Q1 are grounded, one gate of the MOS transistor Q1 is connected to one end of the IO port output resistor R5 and one end of the pull-down resistor R7, and the other end of the IO port output resistor R5 is connected to the control MCU. The MCU U2 is connected to pin 1, the other end of the pull-down resistor R7 is grounded, the other gate of the MOS transistor Q1 is connected to one end of the IO port output resistor R6 and one end of the pull-down resistor R8, the other end of the IO port output resistor R6 is connected to pin 6 of the control MCU U2, the other end of the pull-down resistor R8 is grounded, and pin 2 of the control MCU U2 is grounded. Pin 3 of the control MCU U2 is connected to one end of the MCU signal input resistor R10, and the other end of the MCU signal input resistor R10 is respectively connected to one end of the MCU voltage sampling pull-up resistor R3, one end of the pull-down resistor R4, and the MCU signal input terminal P2. The other end of the MCU voltage sampling pull-up resistor R3 is connected to the power supply voltage VCC, and the other end of the pull-down resistor R4 is grounded. Pin 4 of the control MCU U2 is connected to one end of the MCU signal output resistor R9, and the other end of the MCU signal output resistor R9 is connected to the MCU signal output terminal P5. The output terminal P5 is connected to the MCU signal input terminal P2 of the next group. Pin 5 of the control MCU U2 is connected to the voltage regulating circuit.

[0018] The MOS transistor Q1 is a dual N-channel MOS transistor having two drains D1 and D2, two sources S1 and S2, and two gates G1 and G2.

[0019] The control MCU U2 is a single-chip microcomputer with a built-in control program. It automatically detects the first control MCU at the moment of power-on. The 1 / 6 pins output a high level, turning on the MOS tube to turn on the LED and light up the first group. After a delay of 50ms, the 4 pins output a signal, and the next group of 3 pins receive the signal. At the same time, the 1 / 6 pins output a high level, turning on the MOS tube to turn on the LED and light up the second group. And so on, the nth group of LEDs is lit to achieve the effect of running horse racing on power-on. At the same time, the MCU has a memory function. If the MCU is started twice in succession within 3 seconds, it will enter the switching control MCU pins 1 and 6. The effect of pin 1 / 6 realizes color temperature control, so that different color temperatures can be lit in different scenarios.

[0020] The light string LED-Y is connected in series with a voltage dividing resistor R11 and a voltage dividing resistor R2.

[0021] The light string LED-W is connected in series with a voltage dividing resistor R12 and a voltage dividing resistor R1.

[0022] The voltage-dividing resistors R11, R2, R12 and R1 are resistors connected in series in the LED circuit to perform voltage division and current limiting, which can ensure that no large current flows through the LED.

[0023] The two-wire LED light string uses dual-color temperature light-emitting diodes LED1-6, which are dual-color temperature LEDs. They are two-in-one lamp beads with two chips in one package, and can emit LEDs with two color temperatures (such as 2700K and 4000K, 2700K and 6500K, etc.).

[0024] like Figure 2 As shown, the voltage stabilization circuit includes a voltage regulator U1, a diode D1, a filter capacitor C1, and a filter capacitor C2. Pin 1 of the voltage regulator U1 is grounded, pin 2 of the voltage regulator U1 is connected to pin 5 of the control MCU U2, pin 3 of the voltage regulator U1 is connected to the cathode of the diode D1, and the anode of the diode D1 is connected to the power supply voltage VCC. One end of the filter capacitor C1 is connected to pin 3 of the voltage regulator U1, and the other end of the filter capacitor C1 is grounded. One end of the filter capacitor C2 is connected to pin 2 of the voltage regulator U1, and the other end of the filter capacitor C2 is grounded.

[0025] The voltage regulator U1 utilizes a high-precision, low-dropout linear regulator based on CMOS technology. It features low quiescent power consumption and high voltage resistance. The LR8341 series has an input voltage of up to 40V and a fixed output voltage range of 2.5V-5V. The chip also includes built-in short-circuit protection to ensure safe operation. The MCU controls the system power supply.

[0026] Diode D1 is a small high-speed switching diode, widely used in circuits with high signal frequencies for one-way conduction isolation, communications, computer boards, television circuits and industrial control circuits.

[0027] Filter capacitor C1 and filter capacitor C2 can provide power to the voltage regulator tube for filtering and control MCU U2.

[0028] The utility model provides a two-wire marquee light strip, which can realize color temperature control while achieving a marquee effect, and can light up different color temperatures in different scenarios. In addition, only two wires need to be welded, which is convenient for passing through smaller wire holes.

[0029] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A two-line marquee light strip, characterized by: The invention comprises a voltage regulating circuit, a two-line LED light string, a MOS tube Q1, a control MCUU2, an IO port output resistor R5, an IO port output resistor R6, a pull-down resistor R7, a pull-down resistor R8, an MCU voltage sampling pull-up resistor R3, a pull-down resistor R4, an MCU signal input resistor R10, and an MCU signal output resistor R9. The two-line LED light string comprises a light string LED-Y capable of emitting a first color temperature and a light string LED-W capable of emitting a second color temperature. The MOS tube Q1 is a dual N-channel MOS tube. The anodes of the light strings LED-Y and LED-W are respectively connected to the power supply voltage VCC. The cathodes of the light strings LED-Y and LED-W are respectively connected to the two drains of the MOS tube Q1. The two sources of the MOS tube Q1 are grounded. One of the gates of the MOS tube Q1 is connected to one end of the IO port output resistor R5 and one end of the pull-down resistor R7. The other end of the IO port output resistor R5 is connected to the control MCU. The MCU U2 is connected to pin 1, the other end of the pull-down resistor R7 is grounded, the other gate of the MOS transistor Q1 is connected to one end of the IO port output resistor R6 and one end of the pull-down resistor R8, the other end of the IO port output resistor R6 is connected to pin 6 of the control MCU U2, the other end of the pull-down resistor R8 is grounded, and pin 2 of the control MCU U2 is grounded. Pin 3 of the control MCU U2 is connected to one end of the MCU signal input resistor R10, and the other end of the MCU signal input resistor R10 is respectively connected to one end of the MCU voltage sampling pull-up resistor R3, one end of the pull-down resistor R4, and the MCU signal input terminal P2. The other end of the MCU voltage sampling pull-up resistor R3 is connected to the power supply voltage VCC, and the other end of the pull-down resistor R4 is grounded. Pin 4 of the control MCU U2 is connected to one end of the MCU signal output resistor R9, and the other end of the MCU signal output resistor R9 is connected to the MCU signal output terminal P5. The output terminal P5 is connected to the MCU signal input terminal P2 of the next group. Pin 5 of the control MCU U2 is connected to the voltage regulating circuit.

2. The two-line marquee light strip according to claim 1, characterized in that: The light string LED-Y is connected in series with a voltage dividing resistor R11 and a voltage dividing resistor R2.

3. The two-line marquee light strip according to claim 1, characterized in that: The light string LED-W is connected in series with a voltage dividing resistor R12 and a voltage dividing resistor R1.

4. The two-line marquee light strip according to claim 1, characterized in that: The voltage stabilization circuit includes a voltage regulator U1, a diode D1, a filter capacitor C1, and a filter capacitor C2. Pin 1 of the voltage regulator U1 is grounded, pin 2 of the voltage regulator U1 is connected to pin 5 of the control MCU U2, pin 3 of the voltage regulator U1 is connected to the cathode of the diode D1, and the anode of the diode D1 is connected to the power supply voltage VCC. One end of the filter capacitor C1 is connected to pin 3 of the voltage regulator U1, and the other end of the filter capacitor C1 is grounded. One end of the filter capacitor C2 is connected to pin 2 of the voltage regulator U1, and the other end of the filter capacitor C2 is grounded.

Images