WO2016074307A1

WO2016074307A1 - Led christmas lamp string

Info

Publication number: WO2016074307A1
Application number: PCT/CN2014/093796
Authority: WO
Inventors: 卢卫强
Original assignee: 卢卫强
Priority date: 2014-11-13
Filing date: 2014-12-15
Publication date: 2016-05-19
Also published as: CN204217178U; DE202015001610U1

Abstract

An LED Christmas lamp string, comprising a control box (6) and an LED lamp string (5). The control box (6) is provided with a switch power supply circuit and a control panel circuit (1) therein; the control box (6) is provided with a plug (6a) and a switching button (6b) thereon, and the switching button (6b) is provided with an indicating lamp therein; one end of the switch power supply circuit is electrically connected to an alternating current power supply through the plug (6a), and the other end of the switch power supply circuit is input to the control panel circuit (1); and the control panel circuit (1) outputs two lines to be connected to the LED lamp string (5). The pressing time and the circulating time interval of the switching button (6b) are set according to a customer's requirements, so that switching of the LED Christmas lamp string between a common mode and a circulating mode can be realized and indicated by the indicating lamp; the LED Christmas lamp string can realize time-delayed extinguishment and keep cyclic light-on and light-off in 24 hours, the delay time can be set according to needs, and the switching button (6b) can be operated for control.

Description

LED Christmas light string

Technical field

The utility model belongs to the technical field of decorative lighting, in particular to an LED Christmas light string.

Background technique

LED light string is the main ornament of Christmas, and it is also an indispensable lighting decoration electronic product for the general public, home, store, cultural activities, night scenes of public places, and has a broad market.

At present, the light string on the market has two light string modes: constant light and flashing. The constant light mode is simple to manufacture and relatively monotonous; the flashing light string has better visual effect; however, the light strings of the two modes have a defect, that is, the light strings of the two modes are always in working state after being energized. Not only consumes electricity, but also in long-term working conditions, the LED light string is easy to damage; in addition, the LED light string is rarely turned on during the daytime, and it is turned on when the sky is dark. The user needs to turn off the LED light string during the day, and then at night. The LED light string is turned on, which is inconvenient when used.

Utility model content

The utility model provides an LED Christmas light string, which solves the defect that the LED light string is inconvenient to be controlled and used in the prior art. The utility model has the advantages of simple structure and convenient operation, and can be controlled and switched according to the needs of the user.

The technical solution of the utility model is realized as follows:

LED Christmas light string, comprising a control box and an LED light string, wherein the control box is provided with a switching power supply circuit and a control board circuit; and the control box is provided with a plug and a switch button, and the switch button is provided with an indicator light; the switching power supply One end of the circuit is electrically connected to the AC power through the plug, and the other end is input to the control board circuit; and the control board circuit outputs two lines connected to the LED light string.

Further, the control board circuit comprises a connection terminal, a chip U1, a chip U3, a resistor R0, a light-emitting diode L1, a button switch K1, a capacitor C1 and a Zener diode ZD1; the light-emitting diode L1 is disposed in the indicator light; the button switch K1 is connected with the switch button a timing module integrated in the chip U1; the chip U1 The third pin is electrically connected to the GND pin of the terminal; the fourth pin of the chip U1 is electrically connected to the INPUT pin of the terminal; the fifth pin of the chip U1 is electrically connected to the PORT1 pin of the terminal; the chip U1 The sixth pin is electrically connected to the PORT2 pin of the terminal; the resistor R0 is electrically connected between the INPUT pin and the fourth pin, and the other end is electrically connected to the Zener diode ZD1 end, and the resistor R0 and the voltage regulator A first node is disposed between the diodes ZD1, the first node is electrically connected to the tenth pin of the chip U1; the second node and the third node are disposed between the first node and the tenth pin; The other end of the voltage diode ZD1 is electrically connected to one end of the capacitor C1, the other end of the capacitor C1 is electrically connected to the third node, and the junction of the Zener diode ZD1 and the capacitor C1 is grounded; the second node is electrically connected to the chip U3; the chip U1 The fifteenth pin is electrically connected to one end of the button switch K1, the fourteenth pin of the chip U1 is electrically connected to one end of the resistor R0, the other end of the resistor R0 is electrically connected to one end of the light emitting diode L1, and the other end of the light emitting diode L1 is electrically connected to the button The other end of the switch K1, and the button switch K1 and the light-emitting diode L1 Electrical connection pins connected to the ground after five chip U3; pin eleventh and twelfth pins are electrically connected to the chip on the chip U1 U3.

Further, the switching power supply circuit comprises a thermal overcurrent relay FR1, a full bridge rectifier circuit, a filter circuit and a buck output circuit; one end of the thermal overcurrent relay FR1 is electrically connected to the live terminal L of the AC power source, and the other end thereof is electrically connected to the full bridge rectifier At one end of the circuit, the other end of the full-bridge rectifier circuit is electrically connected to one end of the filter circuit; the other end of the filter circuit is electrically connected to one end of the buck output circuit, and the other end of the buck output circuit is electrically connected to the INPUT pin of the connection terminal.

Further, the full bridge rectifier circuit is composed of four silicon rectifier diodes, and the live line end L and the neutral line end N of the AC power source are respectively connected to the AC input end of the full bridge rectifier circuit, and the positive pole of the DC output of the full bridge rectifier circuit is connected to the positive pole of the circuit. The negative terminal of the output of the bridge rectifier circuit is connected to the ground GND.

Further, the filter circuit is composed of a polar capacitor C1, an inductor L1 and a polar capacitor C2. The polarity capacitor C1 is positive, the inductor L1 is connected to the anode of the DC output of the full bridge rectifier circuit, and the polarity capacitor C1 is connected to the circuit. GND, the output terminal of the inductor L1 is connected to the positive terminal of the polarity capacitor C2, and the negative terminal of the polarity capacitor C2 is connected to the ground GND.

Further, the buck output circuit includes a single chip chip IC1, a transformer T1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R7, a resistor R8, a polarity capacitor C3, a capacitor C4, a polarity capacitor C5, and a capacitor C6. Capacitor CY1, diode D1, diode D2, diode D3, diode D4 and transistor Q1; pin 1 of single chip chip IC1 is connected to circuit ground GND, single chip chip IC1 Pin 2 is connected to the end of resistor R8. The pin 3 of the MCU chip IC1 is connected to the base of the transistor Q1. The pin 4 of the MCU chip IC1 is connected to the end of the resistor R3 and the end of the resistor R4. The pin 5 of the MCU chip IC1 is connected to the C6 end of the capacitor. Pin 6 of the MCU chip IC1 is connected to the positive terminal of the polarity capacitor C3, the end of the diode D2 and the end of the resistor R7; the negative terminal of the polarity capacitor C3 is connected to the ground GND and the other end of the capacitor C6, and the other end of the resistor R8 is simultaneously connected to the transistor Q1. One end of the resistor and the resistor R1, the other end of the resistor R1 is connected to the circuit ground GND; the other end of the resistor R3 is connected to the circuit ground GND, and the other end of the resistor R4 is connected to the other end of the diode D2 and the same end of the first secondary coil of the transformer T1, and the transformer T1 is first. The different name end of the secondary coil is connected to the circuit ground GND and the end of the capacitor CY1, the other end of the capacitor CY1 is connected to the circuit ground GND; the collector of the transistor Q1 is connected to the same end of the diode D1 and the same end of the transformer T1; the other end of the resistor R7 is simultaneously Connected to the filter circuit, resistor R2, capacitor C4 and the different name of the primary winding of transformer T1; the other end of resistor R2 is connected to the other end of capacitor C4 and the other end of diode D1; transformer T1 second time The same end of the coil is connected to one end of the diode D3 and one end of the diode D4, and the other end of the diode D3 is simultaneously connected to the other end of the diode D4, the positive pole of the electrodeless capacitor C5 and the end of the resistor R5; the second secondary winding of the transformer T1 has a different name and a capacitor C5. The other end of the negative electrode and the resistor R5 are connected to the circuit ground GND.

Further, the GND pin of the terminal is electrically connected to the connection of the resistor R5 and the diode D3; the INPUT pin of the terminal is electrically connected to the connection of the resistor R5 and the ground GND.

Further, the LED string is electrically connected between the PORT1 pin of the terminal and the PORT2 pin.

Further, the LED string is formed by a group of LED branches connected in parallel, and each group of LED branches is provided with one or more LEDs.

Preferably, the LED light string is formed by a series of LED branches connected in series, and each set of LED branches is formed by routing one or more sets of LEDs in parallel.

The LED Christmas light string of the utility model integrates the timing module in the chip U1 of the control board circuit, and the manufacturer can set the time of the switching button pressing and the time interval of the cycle according to the customer's demand, so the user passes the control board circuit. Control, the LED Christmas light string of the utility model can be switched between the normal mode and the circulation mode, and the indicator light is used for prompting, because the LED Christmas light string of the utility model can realize the time-delay extinction, the 24-hour cycle is extinguished, and the delay is delayed. The time is set according to the demand, and the control can be performed by operating the switching button, so that the use is convenient, the power consumption cost is saved, and the life of the LED light string is prolonged.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without any creative work.

1 is a circuit schematic diagram of an LED Christmas light string of the present invention;

Figure 2 is a schematic view of the structure of the present invention;

Figure 3 is a circuit diagram of the LED light string of the present invention;

4 is another circuit diagram of the LED light string of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 to 4, an LED Christmas light string includes a control box 6 and an LED light string 5, a control power supply circuit and a control board circuit 1 are disposed in the control box; and the control box 6 is provided with a plug 6a and a switch Button 6b, the switch button is internally provided with an indicator light (as shown); one end of the switch power supply circuit is electrically connected to the AC power source through the plug, and the other end is input to the control board circuit; and the control board circuit outputs two lines connected to the LED light string .

The control board circuit 1 comprises a terminal 11 , a chip U1 , a chip U3 , a resistor R0 , a light-emitting diode L1 , a button switch K1 , a capacitor C1 and a Zener diode ZD1 ; the light-emitting diode L1 is arranged in the indicator light; the button switch K1 is connected with the switch button The timing module is integrated in the chip U1; the third pin of the chip U1 is electrically connected to the GND pin of the terminal; the fourth pin of the chip U1 is electrically connected to the INPUT pin of the terminal; the fifth pin of the chip U1 Electrically connected to the PORT1 pin of the terminal; the sixth pin of the chip U1 is electrically connected to the PORT2 pin of the terminal; the end of the resistor R0 is electrically connected between the INPUT pin and the fourth pin, and the other end is electrically connected to One end of the Zener diode ZD1, and a first node between the resistor R0 and the Zener diode ZD1, the first node is electrically connected to the tenth pin of the chip U1; A second node and a third node are arranged between a node and the tenth pin; the other end of the Zener diode ZD1 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is electrically connected to the third node, and the voltage is stabilized. The junction of the diode ZD1 and the capacitor C1 is grounded; the second node is electrically connected to the chip U3; the fifteenth pin of the chip U1 is electrically connected to one end of the button switch K1, and the fourteenth pin of the chip U1 is electrically connected to the resistor R0. One end, the other end of the resistor R0 is electrically connected to one end of the LED L1, the other end of the LED L1 is electrically connected to the other end of the button switch K1, and the connection of the button switch K1 and the LED L1 is electrically connected to the five pins of the chip U3. After grounding; the eleventh pin and the twelfth pin of the chip U1 are electrically connected to the chip U3, respectively. The switching power supply circuit of the utility model provides power for the chip U1 on the control board circuit.

The switching power supply circuit comprises a thermal overcurrent relay FR1, a full bridge rectifier circuit 2, a filter circuit 3 and a buck output circuit 4; one end of the thermal overcurrent relay FR1 is electrically connected to the live terminal L of the alternating current power source, and the other end thereof is electrically connected to the full bridge At one end of the rectifier circuit, the other end of the full bridge rectifier circuit is electrically connected to one end of the filter circuit; the other end of the filter circuit is electrically connected to one end of the buck output circuit, and the other end of the buck output circuit is electrically connected to the INPUT pin of the connection terminal. The hot overcurrent relay FR1 of the utility model is dissolved and exceeds the set current, and is short-circuited.

The full-bridge rectifier circuit consists of four silicon rectifier diodes. The live-line terminal L and the neutral-line terminal N of the AC power supply are respectively connected to the AC input terminal of the full-bridge rectifier circuit. The positive pole of the DC-connected rectifier circuit is connected to the positive pole of the circuit, and the full-bridge rectifier is used. The negative terminal of the circuit output is connected to the ground GND. The filter circuit is composed of a polar capacitor C1, an inductor L1 and a polar capacitor C2. The polarity capacitor C1 is positive, the inductor L1 is connected to the positive terminal of the DC output terminal of the full bridge rectifier circuit, and the polarity capacitor C1 is connected to the circuit ground GND. The output end of the inductor L1 is connected to the positive terminal of the polarity capacitor C2, and the negative terminal of the polarity capacitor C2 is connected to the ground GND.

The full-bridge rectifier circuit and the filter circuit of the utility model not only filter out the AC power supply clutter, but also smooth the output DC power after rectification, and at the same time, perform the clutter interference of the internal circuit to the AC power source, and the EMC effect is good.

Buck output circuit includes single chip IC1, transformer T1, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R7, resistor R8, polarity capacitor C3, capacitor C4, polarity capacitor C5, capacitor C6, capacitor CY1, diode D1, diode D2, diode D3, diode D4 and transistor Q1; pin 1 of the single chip chip IC1 is connected to the circuit ground GND, the pin 2 of the single chip chip IC1 is connected to the end of the resistor R8, and the pin 3 of the single chip chip IC1 is connected to the triode Q1 base, the pin 4 of the MCU chip IC1 is connected to the end of the resistor R3 and the end of the resistor R4. The pin 5 of the MCU chip IC1 is connected to the end of the capacitor C6, and the pin 6 of the MCU chip IC1 is connected to the polarity capacitor C3 positive electrode and the diode D2. One end and One end of the resistor R7; the negative terminal of the polarity capacitor C3 is connected to the ground of the circuit GND and the other end of the capacitor C6, the other end of the resistor R8 is simultaneously connected to the emitter of the transistor Q1 and the end of the resistor R1, the other end of the resistor R1 is connected to the ground GND; the other end of the resistor R3 is connected Circuit ground GND, the other end of the resistor R4 is connected to the other end of the diode D2 and the same name end of the first secondary coil of the transformer T1, and the different name end of the first secondary coil of the transformer T1 is connected to the circuit ground GND and the capacitor CY1 end, the capacitor CY1 is another One end is connected to the circuit ground GND; the collector of the transistor Q1 is connected to the end of the diode D1 and the same name end of the primary coil of the transformer T1; the other end of the resistor R7 is simultaneously connected to the filter circuit, the resistor R2, the capacitor C4 and the different name of the primary coil of the transformer T1; The other end of the resistor R2 is simultaneously connected to the other end of the capacitor C4 and the other end of the diode D1; the same end of the second secondary coil of the transformer T1 is simultaneously connected to one end of the diode D3 and one end of the diode D4, and the other end of the diode D3 is simultaneously connected to the other end of the diode D4, One end of the electrodeless capacitor C5 and one end of the resistor R5; the second secondary winding of the transformer T1, the opposite end of the non-polar capacitor C5, and the other end of the resistor R5 are connected to the circuit ground GND. The capacitor CY1 acts as an input and output coupling of the transformer T1 to improve stability.

The GND pin of the terminal is electrically connected to the connection of the resistor R5 and the diode D3; the INPUT pin of the terminal is electrically connected to the connection of the resistor R5 and the ground GND.

The LED string is electrically connected between the PORT1 pin of the terminal block and the PORT2 pin.

The LED string is formed by a group of LED branches connected in parallel, and each group of LED branches is provided with one or more LEDs. The circuit of the LED string is combined in a parallel connection and a series connection, and 10-100 lamps can save 50-60% of the wires.

Preferably, the LED light string is formed by a series of LED branches connected in series, and each set of LED branches is formed by routing one or more sets of LEDs in parallel. The circuit of the string is combined in series and then in parallel, and 100-1000 lamps can save 40-50% of the wires.

The model U1 of the utility model adopts KOP9961-SOP16, and by integrating the timing module therein, the manufacturer can set the time of the switching button pressing and the time interval of the cycle according to the needs of the customer, and switch the button pressing according to the needs. The time can be set to 3 seconds, 4 seconds, 5 seconds or other time. The cycle time interval can be set to 6 hours, 8 hours, 10 hours or other time. When using, when the LED Christmas string is powered, press The button controls the opening and closing of the LED light string. At this time, it is in the normal mode, and the LED light string is always on or off normally; when the switch needs to be switched, the user long presses the switch button for 3 seconds, 4 seconds, 5 seconds or other set time. The indicator inside the toggle button is on, and it is in the loop mode. The LED string lights up and goes out after 6 hours, 8 hours, 10 hours or other set time, and the 24-hour cycle is off.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and principles of the present invention, should be included in Within the scope of protection of the present invention.

Claims

The LED Christmas light string is characterized in that it comprises a control box and an LED light string, wherein the control box is provided with a switching power supply circuit and a control board circuit; and the control box is provided with a plug and a switch button, and the switch button is internally provided with an indication light;

One end of the switching power supply circuit is electrically connected to the AC power through the plug, and the other end is input to the control board circuit; and the control board circuit outputs two lines connected to the LED light string.
The LED Christmas light string of claim 1 , wherein the control board circuit comprises a terminal, a chip U1, a chip U3, a resistor R0, a light emitting diode L1, a button switch K1, a capacitor C1, and a Zener diode ZD1; L1 is set in the indicator light; the button switch K1 is connected with the switch button; the timing module is integrated in the chip U1;

The third pin of the chip U1 is electrically connected to the GND pin of the terminal; the fourth pin of the chip U1 is electrically connected to the INPUT pin of the terminal; the fifth pin of the chip U1 is electrically connected to the PORT1 pin of the terminal The sixth pin of the chip U1 is electrically connected to the PORT2 pin of the terminal;

One end of the resistor R0 is electrically connected between the INPUT pin and the fourth pin, and the other end thereof is electrically connected to one end of the Zener diode ZD1, and a first node is provided between the resistor R0 and the Zener diode ZD1, and the first node Electrically connected to the tenth pin of the chip U1; a second node and a third node are disposed between the first node and the tenth pin; the other end of the Zener diode ZD1 is electrically connected to one end of the capacitor C1, and the capacitor C1 is additionally One end is electrically connected to the third node, and the junction of the Zener diode ZD1 and the capacitor C1 is grounded; the second node is electrically connected to the chip U3;

The fifteenth pin of the chip U1 is electrically connected to one end of the button switch K1, the fourteenth pin of the chip U1 is electrically connected to one end of the resistor R0, the other end of the resistor R0 is electrically connected to one end of the light emitting diode L1, and the other end of the light emitting diode L1 is electrically connected. To the other end of the button switch K1, and the connection of the button switch K1 and the light-emitting diode L1 is electrically connected to the five pins of the chip U3 and grounded; the eleventh pin and the twelfth pin of the chip U1 are electrically connected to On chip U3.
The LED Christmas light string according to claim 2, wherein the switching power supply circuit comprises a thermal overcurrent relay FR1, a full bridge rectifier circuit, a filter circuit and a buck output circuit; and one end of the thermal overcurrent relay FR1 is electrically connected to the AC power source. The end of the live line L, the other end of which is electrically connected to one end of the full bridge rectifier circuit, The other end of the full bridge rectifier circuit is electrically connected to one end of the filter circuit; the other end of the filter circuit is electrically connected to one end of the buck output circuit, and the other end of the buck output circuit is electrically connected to the INPUT pin of the connection terminal.
The LED Christmas light string of claim 3, wherein the full bridge rectifier circuit is composed of four silicon rectifier diodes, and the live terminal L and the neutral terminal N of the AC power source are respectively connected to the AC input terminal of the full bridge rectifier circuit. The positive pole of the DC output of the full bridge rectifier circuit is connected to the anode of the circuit, and the cathode of the output of the full bridge rectifier circuit is connected to the ground of the circuit GND.
The LED Christmas light string according to claim 4, wherein the filter circuit is composed of a polar capacitor C1, an inductor L1 and a polar capacitor C2, and the polarity capacitor C1 is positive, and the inductor L1 is terminated by a full bridge rectifier. The positive pole of the DC output of the circuit, the negative pole of the polarity capacitor C1 is connected to the ground of the circuit GND, the output end of the inductor L1 is connected to the positive pole of the polar capacitor C2, and the negative pole of the polar capacitor C2 is connected to the ground of the circuit GND.
The LED Christmas light string according to any one of claims 3-5, wherein the step-down output circuit comprises a single chip chip IC1, a transformer T1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, and a resistor. R7, resistor R8, polarity capacitor C3, capacitor C4, polarity capacitor C5, capacitor C6, capacitor CY1, diode D1, diode D2, diode D3, diode D4 and transistor Q1;

Pin 1 of the MCU chip IC1 is connected to the circuit GND, pin 2 of the MCU chip IC1 is connected to the end of the resistor R8, pin 3 of the MCU chip IC1 is connected to the base of the transistor Q1, and the pin 4 of the MCU chip IC1 is connected to the end of the resistor R3 at the same time. One end of the resistor R4, the pin 5 of the single chip of the single chip chip IC1 is connected to the end of the capacitor C6, and the pin 6 of the single chip of the single chip chip IC1 is connected to the positive pole of the polar capacitor C3, the end of the diode D2 and the end of the resistor R7;

The negative pole of the polar capacitor C3 is connected to the ground of the circuit GND and the other end of the capacitor C6. The other end of the resistor R8 is connected to the emitter of the transistor Q1 and the end of the resistor R1, the other end of the resistor R1 is connected to the ground GND, and the other end of the resistor R3 is connected to the ground GND. The other end of the resistor R4 is connected to the other end of the diode D2 and the same end of the first secondary winding of the transformer T1. The different end of the first secondary winding of the transformer T1 is connected to the circuit ground GND and the end of the capacitor CY1, and the other end of the capacitor CY1 is connected to the circuit ground. GND; the collector of the transistor Q1 is connected to the end of the diode D1 and the same name of the primary coil of the transformer T1;

The other end of the resistor R7 is simultaneously connected to the filter circuit, the resistor R2, the capacitor C4 and the different name of the primary coil of the transformer T1; the other end of the resistor R2 is simultaneously connected to the other end of the capacitor C4 and the other end of the diode D1;

The same name end of the second secondary winding of the transformer T1 is simultaneously connected to one end of the diode D3 and one end of the diode D4, and the other end of the diode D3 is simultaneously connected to the other end of the diode D4, the positive electrode of the non-polar capacitor C5 and the resistor R5. One end; the second secondary winding of the transformer T1, the opposite end of the non-polar capacitor C5, and the other end of the resistor R5 are connected to the circuit ground GND.
The LED Christmas light string of claim 6, wherein the GND pin of the terminal is electrically connected to the connection of the resistor R5 and the diode D3; the INPUT pin of the terminal is electrically connected to the resistor R5 and the ground GND Connection.
The LED Christmas light string of claim 7, wherein the LED string is electrically connected between the PORT1 pin of the terminal and the PORT2 pin.
The LED Christmas light string according to claim 8, wherein the LED light string is formed by a group of LED branches connected in parallel, and each group of LED branches is provided with one or more LEDs.
The LED Christmas light string of claim 8 wherein the LED light string is formed by a series of LED branches connected in series, and each set of LED branches is formed by routing one or more sets of LEDs in parallel.