WO2007033526A1 - Guirlande de del amelioree - Google Patents

Guirlande de del amelioree Download PDF

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Publication number
WO2007033526A1
WO2007033526A1 PCT/CN2005/001552 CN2005001552W WO2007033526A1 WO 2007033526 A1 WO2007033526 A1 WO 2007033526A1 CN 2005001552 W CN2005001552 W CN 2005001552W WO 2007033526 A1 WO2007033526 A1 WO 2007033526A1
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WO
WIPO (PCT)
Prior art keywords
led
diode
rectifier
led lamp
terminal
Prior art date
Application number
PCT/CN2005/001552
Other languages
English (en)
Chinese (zh)
Inventor
Qingbiao Wu
Original Assignee
Qingbiao Wu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingbiao Wu filed Critical Qingbiao Wu
Priority to PCT/CN2005/001552 priority Critical patent/WO2007033526A1/fr
Publication of WO2007033526A1 publication Critical patent/WO2007033526A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/10—Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light string, particularly a light string using a light emitting diode as a light source.
  • a light string such as the Chinese utility model "a decorative lantern for decoration" (patent number 03273878. 1)
  • its working circuit is shown in Figure 1, including a rectifier circuit and a light string, and its rectifier circuit
  • a rectifier bridge is used.
  • the input end of the rectifier bridge is connected to an AC power source, and its string is connected in series by a 10-50 light-emitting diode (LED) on the load circuit of the rectifier circuit.
  • LED light-emitting diode
  • the general method is as shown in Figure 2.
  • the power cable is pulled from the output of the rectifier bridge and the cathode of the last LED of the previous string.
  • An electrical connector, the next string of strings is connected to the electrical connector via another electrical connector that is adapted to obtain power.
  • This type of light string is limited by the power of the rectifier bridge, and the number of strings that can be connected in series is also limited.
  • Another method is shown in Figure 3.
  • the power lines from the two AC input terminals of the rectifier bridge are respectively connected to the electrical connector to provide power for the next string of lights, and then the electrical connector is inserted into another suitable electrical connection.
  • the device draws AC power, connects to another rectifier bridge, and then accesses the next string of lights.
  • the light string is solved because the power supply of each string of lights is rectified by the respective rectifier bridges, which solves the problem that the number of strings is limited by the power of the rectifier bridge, but since the power of each string passes through the power line Introduced from the AC input end of the previous string of lights, so that the length of the entire string is increased by two power lines. Since the wires are more expensive, the strings have a certain length, and the addition of two wires greatly increases the number of lights. The cost of the string.
  • the rectifier circuit uses a double-half-wave rectifier circuit.
  • the output of the double-half-wave rectifier circuit is connected to the positive terminal of an LED lamp group.
  • the two sets of half-wave ripple rectification voltages are obtained by connecting the resistors of the respective load circuits to the two ends of the alternating current, so that the LED lamp sets and resistors connected to the common output ends of the double half-wave rectifier circuits are obtained.
  • an improved LED light string comprising at least one set of double half-wave rectifying circuits and at least one set of LED lamp sets whose positive ends are connected to a common output end of the corresponding double half-wave rectifying circuit
  • An impedance element is connected between the positive terminal of the rectifier of the double half-wave rectifier circuit and the AC power source, and a diode is connected in series with the opposite ends of the LED lamp group and the AC power supply in the same polarity direction.
  • a common set of the above LEDs is connected to a common output of each of the above-mentioned double half-wave rectifier circuits.
  • each said double half-wave rectifying circuit is connected to two sets of the LED lamp set 0
  • the positive terminals of the respective diodes are respectively connected to the negative terminals of the LED groups of the respective groups, and the negative terminals of the respective diodes are respectively connected to the two ends of the AC power source through resistors.
  • the double half-wave rectifying circuit has a complex array, and a pair of LED lamps connected to a common output end of the next set of double half-wave rectifying circuits and a set of LED lamps connected to a common output end of the last set of double half-wave rectifying circuits
  • the negative terminals of the group are connected, and a diode is connected in series with the same polarity direction between the negative terminal of the other LED lamp group connected to the common output end of the next set of double half wave rectifier circuits and the two ends of the AC power source.
  • the two output ends of the above AC power source are respectively led to an electrical connector through a power line.
  • the above electrical connector is an electrical socket.
  • an improved LED string of the present invention uses a resistor to reduce voltage and current limit for each half wave, thereby reducing heat generated by the resistor, thereby saving power and reducing production cost.
  • the four resistors corresponding to each group of LED lamps can be connected to the same input end of the AC power source, and the structure is compact and the volume is small, thereby further saving cost.
  • a plurality of double half-wave rectifying circuits can be disposed in one LED string, so that when there are multiple sets of LED lamp groups in each string, there is still enough voltage and current for each LED to work.
  • the present invention has the characteristics of low power consumption, low cost, and a large number of connectable LEDs.
  • Figure 2 is a schematic circuit diagram of the second item.
  • Figure 3 is a circuit schematic of the third item.
  • FIG. 4 is a circuit schematic of the fourth item.
  • FIG. 5 is a schematic circuit diagram of a first embodiment of the present invention.
  • FIG. 6 is a schematic circuit diagram of a second embodiment of the present invention.
  • Fig. 7 is a circuit schematic diagram of a third example of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an improved LED light string of the present invention is shown in FIG. 5, including diodes VD1, VD2, rectifiers VD3, VD4, resistors R1, R2, R3, R4, and a plurality of light-emitting diodes D1-
  • One end of the AC power supply is respectively connected to one end of the resistors R1 and R3, and the other ends of the resistors R1 and R3 are respectively connected to the negative end of the diode VD1 and the positive end of the rectifier VD3; the other end of the AC power supply is respectively connected to one end of the resistors R2 and R4
  • the other ends of the resistors R2 and R4 are respectively connected to the negative terminal of the diode VD2 and the positive terminal of the rectifier VD4; the positive terminal of the diode VD1 and the positive terminal of the diode VD2 are commonly connected to the negative terminal of the LED D1, and the negative terminal of the rectifier VD3
  • the negative terminal of the rectifier VD4 is connected in common to the positive terminal of the light emitting diode Dn. Both ends of the AC power source are respectively connected to the two input terminals of the electrical socket P1.
  • the alternating current is in the first positive half cycle
  • the output end of the alternating current is positive
  • the end b is negative
  • the rectifier VD3 and the diode VD2 are turned on, and the current is passed from the output end of the alternating current through the resistor R3.
  • the rectifier VD3, the LED lamp group 1, the diode VD2, the resistor R2 and the output terminal b of the alternating current form a loop, and a half-wave rectified voltage is obtained on the loop of the LED lamp group 1.
  • the output terminal of the alternating current is negative
  • the b terminal is positive
  • the rectifier VD4 and the diode VD1 are turned on
  • the current flows from the output terminal b of the alternating current through the resistor R4 and the rectifier VD4.
  • the LED lamp group 1, the diode VD1, the resistor R1 and the output end of the alternating current terminal a form a loop, and a half-wave rectified voltage is obtained on the loop of the LED lamp group 1.
  • a double-half-wave pulsating rectification voltage is obtained on the LED lamp group 1, and the LED lamp group 1 does not flicker when it emits light, thereby prolonging its service life.
  • FIG. 6 A second embodiment of an improved LED light string of the present invention is shown in FIG. 6 and includes diodes VD1, VD2, VD5, VD6, rectifiers VD3, VD4, resistors R1, R2, R3, R4, R5, R6, LED light group 1 in which light-emitting diodes D1_Dn are sequentially connected in the same polarity direction, LED light group 2 which is formed by sequentially connecting several light-emitting diodes Dn+1-Dm in the same polarity direction, and electric socket P1
  • One end of the AC power supply is respectively connected to one end of the resistors R1, R3, and R5', and the other ends of the resistors R1, R3, and R5 are respectively connected to the negative terminal of the diode VD1, the positive terminal of the rectifier VD3, and the negative terminal of the diode VD5;
  • the other end of the power supply is respectively connected to one end of the resistors R2, R4, and R6, and the other ends of the resistors R2, R
  • the alternating current is in the first positive half cycle
  • the output end of the alternating current is positive
  • the end b is negative
  • the rectifier VD3 the diode VD2 and the diode VD6 are turned on, and the current is from the output end of the alternating current a.
  • a circuit is formed through the resistor R3, the rectifier tube VD3, the LED lamp group 1, the diode VD2, the resistor R2 and the output terminal b of the alternating current, and a half-wave rectified voltage is obtained on the loop of the LED lamp group 1; meanwhile, the current is output from the alternating current terminal a
  • the terminal forms a loop through the resistor R3, the rectifier VD3, the LED lamp group 2, the diode VD6, the resistor R6 and the output terminal b of the alternating current, and obtains a half-wave rectified voltage on the loop of the LED lamp group 2.
  • FIG. 7 A third embodiment of an improved LED light string of the present invention is shown in FIG. 7 and includes diodes VD1, VD2, VD5, VD6, VD9, VD10, rectifiers VD3, VD4, VD7, VD8, resistors Rl, R2, R3, R4, R5, R6, R7, R8, R9, RI O, LED lamp group 1 which is formed by sequentially connecting a plurality of light-emitting diodes D1-Dn in the same polarity direction, and is composed of a plurality of light-emitting diodes Dn+1-Dm
  • the LED lamp group 2 in which the same polarity direction is serially connected in series
  • the LED lamp group 3 which is formed by sequentially connecting a plurality of light-emitting diodes Dm+1-Dx in the same polarity direction
  • a plurality of light-emitting diodes Dx+1- Dy LED lamp group 4 which is connected in series with the same polarity direction, and electric socket PL.
  • One end of the AC power supply is respectively connected to one end of the resistors R1, R3, R5, R7, R9, and the resistors Rl, R3, R5, R7
  • the other end of the R9 is connected to the negative terminal of the diode VD1, the positive terminal of the rectifier VD3, the negative terminal of the diode VD5, the positive terminal of the rectifier VD7, and the negative terminal of the diode VD9; the other end of the AC power source is connected to the resistors R2 and R4, respectively.
  • one end of R6, R8, RI O, resistors R2, R4, R6, R8 The other end of the RI O is respectively connected to the negative terminal of the diode VD2, the positive terminal of the rectifier VD4, the negative terminal of the diode VD6, the positive terminal of the rectifier VD8, and the negative terminal of the diode VD10; the positive terminal of the diode VD1 and the positive terminal of the diode VD2.
  • Connected to the negative terminal of the LED D1 the negative terminal of the rectifier VD3 and the negative terminal of the rectifier VD4 are connected to the positive terminal of the LED Dn and the positive terminal of the LED Dn+1, the positive terminal of the diode VD5 and the diode VD6.
  • the positive terminal is commonly connected to the negative terminal of the LED Dm and the negative terminal of the LED Dm+1, and the negative terminal of the rectifier VD7 and the negative terminal of the rectifier VD8 are commonly connected to the positive terminal of the LED Dx and the LED Dx+1.
  • the positive terminal of the diode VD9 and the positive terminal of the diode VD10 are connected together to emit light.
  • the positive terminal of diode Dy Both ends of the AC power source are respectively connected to the two input terminals of the electrical socket PI.
  • the alternating current is in the first positive half cycle, the output end of the alternating current is positive, and the end b is negative, and the rectifier VD3, the diode VD2, the diode VD6, the rectifier VD7 and the diode VD10 are turned on, current From the output end a of the alternating current, a loop is formed through the resistor R3, the rectifier VD3, the LED lamp group 1, the diode VD2, the resistor R2 and the output end b of the alternating current, and a half-wave rectified voltage is obtained on the loop of the LED lamp group 1; The current is formed from the output end of the alternating current through the resistor R3, the rectifier VD3, the LED lamp group 2, the diode VD6, the resistor R6 and the output terminal b of the alternating current to form a loop, and a half-wave rectified voltage is obtained on the loop of the LED lamp group 2; The current is formed from the output end of the alternating current through the resistor R3, the rectifier VD
  • the output terminal of the alternating current is negative and the b terminal is positive.
  • the rectifier VD4, the diode VD1, the diode VD5, the rectifier VD8 and the diode VD9 are turned on, and the current is output from the alternating current.
  • the terminal b terminal forms a loop through the resistor R4, the rectifier tube VD4, the LED lamp group 1, the diode VD1, the resistor R1 and the output end a of the alternating current, and obtains a half-wave rectified voltage on the loop of the LED lamp group 1; meanwhile, the current is from
  • the output terminal b of the alternating current forms a loop through the resistor R4, the rectifier VD4, the LED lamp group 2, the diode VD5, the resistor R5 and the output terminal a of the alternating current, and a half-wave rectified voltage is obtained on the loop of the LED lamp group 2.
  • the current is formed from the output terminal b of the alternating current through the resistor R8, the rectifier VD8, the LED lamp group 3, the diode VD5, the resistor R5 and the output end of the alternating current terminal a, forming a loop on the LED lamp group 3 loop.
  • Rectifying voltage At the same time, the current is formed from the output terminal b of the alternating current through the resistor R8, the rectifier VD8, the LED lamp group 4, the diode VD9, the resistor R9 and the output end of the alternating current terminal a, forming a loop on the LED lamp group 4 loop.
  • a half-wave rectified voltage is repeated in this way, and a double-half-wave ripple rectification voltage is obtained on the LED lamp group 1, the LED lamp group 2, the LED lamp group 3, and the LED lamp group 4, respectively.
  • each string of strings may be provided with an infinite set of LED light groups, that is, connectable
  • the number of LEDs is not limited.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne une guirlande de DEL améliorée qui comporte au moins un circuit redresseur à double demi-onde et au moins un groupe de DEL dont les bornes positives sont connectées à une borne de sortie commune du circuit redresseur à double demi-onde correspondant. Des éléments de résistance relient respectivement des bornes positives de tubes redresseurs du circuit redresseur à double demi-onde et une alimentation CA, et des diodes sont respectivement reliées en série avec la même direction de polarité des bornes négatives des groupes de DEL et les deux bornes de l'alimentation CA. Grâce à cette solution, la guirlande de DEL améliorée selon l'invention réduit la tension et limite le courant en utilisant une résistance pour chaque demi-onde. Quatre résistances correspondant à chaque groupe de DEL sont fournies de façon que deux résistances et les deux autres résistances sont reliées respectivement et de manière ordinaire à la même borne d'entrée de l'alimentation CA. Une guirlande de DEL peut comporter plusieurs circuits redresseurs à double demi-onde, ainsi, la tension et le courant sont suffisants pour alimenter chaque DEL lorsque plusieurs groupes de groupes DEL sont fournis dans chaque guirlande DEL.
PCT/CN2005/001552 2005-09-23 2005-09-23 Guirlande de del amelioree WO2007033526A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/001552 WO2007033526A1 (fr) 2005-09-23 2005-09-23 Guirlande de del amelioree

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/001552 WO2007033526A1 (fr) 2005-09-23 2005-09-23 Guirlande de del amelioree

Publications (1)

Publication Number Publication Date
WO2007033526A1 true WO2007033526A1 (fr) 2007-03-29

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Family Applications (1)

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PCT/CN2005/001552 WO2007033526A1 (fr) 2005-09-23 2005-09-23 Guirlande de del amelioree

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WO (1) WO2007033526A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000306685A (ja) * 1999-04-26 2000-11-02 Asahi National Lighting Co Ltd Ｌｅｄ点灯回路
CN2500899Y (zh) * 2001-07-20 2002-07-17 沈亚光 一种直接运用市电的串列灯
CN1430864A (zh) * 1998-08-28 2003-07-16 光纤设计公司 发光二极管灯串的优选实施例
CN2644876Y (zh) * 2003-08-21 2004-09-29 刘春明 一种彩灯灯串
US20040201988A1 (en) * 1999-02-12 2004-10-14 Fiber Optic Designs, Inc. LED light string and arrays with improved harmonics and optimized power utilization

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1430864A (zh) * 1998-08-28 2003-07-16 光纤设计公司 发光二极管灯串的优选实施例
US20040201988A1 (en) * 1999-02-12 2004-10-14 Fiber Optic Designs, Inc. LED light string and arrays with improved harmonics and optimized power utilization
JP2000306685A (ja) * 1999-04-26 2000-11-02 Asahi National Lighting Co Ltd Ｌｅｄ点灯回路
CN2500899Y (zh) * 2001-07-20 2002-07-17 沈亚光 一种直接运用市电的串列灯
CN2644876Y (zh) * 2003-08-21 2004-09-29 刘春明 一种彩灯灯串

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