JP5740115B2 - LED circuit - Google Patents

LED circuit Download PDF

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JP5740115B2
JP5740115B2 JP2010187280A JP2010187280A JP5740115B2 JP 5740115 B2 JP5740115 B2 JP 5740115B2 JP 2010187280 A JP2010187280 A JP 2010187280A JP 2010187280 A JP2010187280 A JP 2010187280A JP 5740115 B2 JP5740115 B2 JP 5740115B2
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led
series
connected
parallel
impedance element
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JP2012049184A (en
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楊 泰和
泰和 楊
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楊 泰和
泰和 楊
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Description

  The present invention relates to an LED circuit.

  Current LEDs are divided into those driven by direct current electrical energy and alternating current LEDs driven by alternating current through parallel connection of LEDs in reverse polarity. Their use is relatively inflexible.

  The present invention constitutes a first LED diode set by a kind of at least one or several LEDs connected in parallel or connected in series or in series and parallel, and yet another set includes at least one or A second LED diode set is constituted by several LEDs connected in parallel or in series or in series and parallel with the same polarity, and a reverse polarity series connection type LED connected in series with opposite polarity by the two, By connecting to at least one of the current limiting impedance, the charging / discharging device, and the pressure limiting circuit device, and configuring the drive circuit, it has a characteristic of performing a necessary operation. The present invention can use a DC power supply or an AC power supply through pin selection.

It is explanatory drawing which shows the circuit structure of reverse polarity series connection type LED of 1st Embodiment of this invention. It is explanatory drawing which shows the circuit of 2nd Embodiment of this invention which applies reverse polarity series connection type LED to alternating current power supply. It is explanatory drawing which shows the circuit of 3rd Embodiment of this invention which applies reverse polarity series connection type LED to DC power supply. It is explanatory drawing which shows the circuit of 4th Embodiment of this invention which applies reverse polarity series connection type LED to alternating current power supply, connects LED and an impedance element in series, and is further connected in parallel with a diode. It is explanatory drawing which shows the circuit of 5th Embodiment of this invention which applies reverse polarity series connection type LED to DC power supply, connects LED and an impedance element in series, and is further connected in parallel with the diode. The circuit of the sixth embodiment of the present invention, in which a reverse polarity series connection type LED is applied to an AC power source, the LED and the current limiting impedance element are connected in series, further connected in parallel to the charge / discharge device, and connected in parallel to the diode. It is explanatory drawing shown. Applying reverse polarity series connection type LED to AC power supply, connecting LED and current limiting impedance element in series, connecting in parallel with charging / discharging device, connecting in series with blocking diode, and further connecting in parallel with diode. It is explanatory drawing which shows the circuit of 7th Embodiment. It is explanatory drawing which shows the circuit of 8th Embodiment of this invention which does not install an impedance element in embodiment shown in FIG. It is explanatory drawing which shows the circuit of 9th Embodiment of this invention which does not install an impedance element in embodiment shown in FIG. It is explanatory drawing which shows the circuit of 10th Embodiment of this invention which connects a voltage limiting element in parallel with the both ends of a diode in embodiment shown in FIG. It is explanatory drawing which shows the circuit of 11th Embodiment of this invention which connects a voltage limiting element in parallel with the both ends of a diode in embodiment shown in FIG. It is explanatory drawing which shows the circuit of 12th Embodiment of this invention which connects a voltage limiting element in parallel with the both ends of a diode in embodiment shown in FIG. It is explanatory drawing which shows the circuit of 13th Embodiment of this invention which connects a voltage limiting element in parallel with the both ends of LED in FIG. It is explanatory drawing which shows the circuit of 14th Embodiment of this invention which connects a voltage limiting element in parallel with the both ends of LED in FIG. It is explanatory drawing which shows the circuit of 15th Embodiment of this invention which connects a voltage limiting element in parallel with the both ends of LED in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
A first embodiment of the present invention is shown in FIG. FIG. 1 is an explanatory diagram showing a circuit configuration of a reverse polarity series connection type LED of this embodiment. In the present embodiment shown in FIG. 1, the main configuration includes the following.
LED (101): One or one or more light emitting diodes are connected in parallel to the same pole, or are configured by series connection or series-parallel connection.
LED (102): One or one or more light-emitting diodes are connected in parallel to the same pole, or are configured by series connection or series-parallel connection.
Diode (201), Diode (202): One or more rectifier diodes or a circuit device having the same function and conducting in one direction are connected in parallel, or are configured by series connection or series-parallel connection.

  The LED (101) and the diode (201) are connected in parallel with each other through a reverse conduction current to constitute a first LED diode set. In addition, the LED (102) and the diode (202) are connected in parallel with each other through a reverse conduction current to form a second LED diode set.

The first LED diode set and the second LED diode set are connected in series with opposite polarity to constitute a reverse polarity series-connected LED. Among them, the independent terminal for connecting the first LED diode set is the “a” end, the connection end for connecting the first LED diode set and the second LED diode set in series with opposite polarity is the “b” end, and the second LED diode set is connected. The independent terminal to be used is the c end.
The AC power is transmitted through the a-end and c-end of the reverse polarity series connection type LED, and the LED circuit of this embodiment is operated as an AC LED function.

(Second Embodiment)
A second embodiment of the present invention is shown in FIG. FIG. 2 is an explanatory diagram showing a circuit in which a reverse polarity series connection type LED is applied to an AC power source.
The a end and the c end of the reverse polarity series connection type LED are coupled, and the coupling end receives DC electric energy in cooperation with the b end, and passes through the LED (101) and the LED (102). The LED circuit is operated as a DC LED function.

(Third embodiment)
A third embodiment of the present invention is shown in FIG. FIG. 3 is an explanatory diagram showing a circuit in which a reverse polarity series connection type LED is applied to a DC power source.
When this embodiment is applied to an AC power supply, the current is limited between the AC power supply and the a-end or c-end of the reverse polarity series-connected LED, the LED (101), and at least one of the LEDs (102). At least one of the impedance element (400), the current limiting impedance element (401), and the current limiting impedance element (402) can be connected in series.

(Fourth embodiment)
A fourth embodiment of the present invention is shown in FIG. FIG. 4 is an explanatory diagram showing a circuit in which a reverse polarity series connection type LED is applied to an AC power source, the LED and the impedance element are first connected in series, and then further connected in parallel with the diode. As shown in FIG. 4, the impedance element includes one or more of the following 1) to 6). 1) a resistive impedance element, 2) a capacitive impedance element, 3) a coil impedance element, 4) a linear transistor impedance element, 5) a cutting switch unit comprising a solid phase switch, and 6) a thyristor cutting switch unit.

The position where the impedance elements described above are connected in series is
1) An impedance element and an LED are connected in series and then further connected in parallel with a diode, and / or
2) The impedance element is connected in series between the power source and the reverse polarity series connection type LED, and / or
3) It includes connecting in parallel with at least one of the LED and the diode, and further connecting in series with the impedance element.

  When applying the reverse polarity series connection type LED to the DC power source, the direct current power source and the reverse polarity series connection type LED between the a end and the c end of the reverse polarity series connection type LED or the b end, the LED (101), and the LED At least one of the current limiting impedance element (400), the current limiting impedance element (401), and the current limiting impedance element (402) can be connected in series to at least one of (102).

(Fifth embodiment)
A fifth embodiment of the present invention is shown in FIG. FIG. 5 is an explanatory diagram showing a circuit in which a reverse polarity series connection type LED is applied to a DC power supply, first the LED and the impedance element are connected in series, and then connected in parallel with the diode.

  As shown in FIG. 5, the impedance element includes one or more of the following 1) to 4). 1) a resistive impedance element, 2) a linear crystal impedance element, 3) a cutting switch unit comprising a solid phase switch, and 4) a thyristor cutting switch unit.

The position where the impedance elements are connected in series is
1) An impedance element and an LED are connected in series and then further connected in parallel with a diode, and / or
2) The impedance element is connected in series between the power source and the reverse polarity series connection type LED,
And or
3) It includes connecting in parallel with at least one of the LED and the diode, and further connecting in series with the impedance element.

  When applying the reverse polarity series connection type LED to the AC power source, go further one step between the AC power source and the a end and the c end of the reverse polarity series connection type LED, and at least one of the LED (101) and the LED (102). On the other hand, at least one of the current limiting impedance element (400), the current limiting impedance element (401), and the current limiting impedance element (402) is connected in series, and both ends of the diode (201) and both ends of the diode (202) are connected. At least one of the charge / discharge device (301) and the charge / discharge device (302) can be connected in parallel to at least one of them.

When the polarity of the AC power is transmitted through the AC power supply, the polarity of the AC power supply indicates a power supply state for the LEDs connected in parallel, and the power supply voltage is higher than the voltage of the charge / discharge device connected in parallel. At the same time as supplying power to the LED, the charging / discharging device connected in parallel is charged.
Further, the power supply polarity of the AC power supply does not supply power to the LEDs connected in parallel, or supplies power to the LEDs connected in parallel by the charge / discharge device when the power supply voltage is lower than the voltage of the charge / discharge device. To do.

Through the operation of the charging / discharging device, some or all of the following functions can be obtained.
1) Transmit power to both LEDs at the same time to emit light, and be unaffected by changes in the polarity of the AC power supply.
2) When an LED is driven by an AC power supply, light pulses generated by the LED are reduced.
3) Provide electrical energy that turns off the LED after power off. 4) When a power interruption occurs in an emergency, the LED continues to provide a lighting power source. The charge / discharge device shall be composed of a chargeable / dischargeable battery, or a monopolar, bipolar capacitor or spur capacitor.

(Sixth embodiment)
A sixth embodiment of the present invention is shown in FIG. FIG. 6 shows a circuit in which a reverse-polarity series-connected LED is applied to an AC power supply, and first a LED and a current-limiting impedance element are connected in series, then connected in parallel to a charge / discharge device, and connected in parallel to a diode. FIG.

  When applying the reverse polarity series connection type LED to the AC power source, the current limiting impedance element (400) is connected in series between at least one of the AC power source and the a end and the c end of the reverse polarity series connection type LED. Further, at least one of the current limiting impedance element (401) and the current limiting impedance element (402) is connected in series to at least one of the LED (101) and the LED (102), and then a diode (203) and a diode ( 204), at least one of the current limiting impedance element (401) and the current limiting impedance element (402) is connected to at least one of the current output terminal of the LED (101) and at least one of the LED (102) by at least one of the current input terminals. Are connected in series, and both ends of the diode (201) and the diode (202) in at least one of the opposite ends of and connected in parallel at least one of the rechargeable device (301) and the rechargeable device (302).

  When the polarity of the AC power is transmitted through the AC power supply, the polarity of the AC power supply indicates a power supply state for the LEDs connected in parallel, and the power supply voltage is higher than the voltage of the charge / discharge device connected in parallel. At the same time as supplying power to the LED, the charging / discharging device connected in parallel is charged. The power supply polarity of the AC power supply does not supply power to the LEDs connected in parallel, or supplies power to the LEDs connected in parallel by the charge / discharge device when the power supply voltage is lower than the voltage of the charge / discharge device. Reverse polarity series connection type LED and driving circuit.

Through the operation of the charging / discharging device, some or all of the following functions can be obtained.
1) Transmit power to both LEDs at the same time to emit light, and be unaffected by changes in the polarity of the AC power supply.
2) When an LED is driven by an AC power supply, light pulses generated by the LED are reduced.
3) Providing electrical energy that causes the LEDs to turn off after the power is turned off.
4) When a power interruption occurs in an emergency, the LED continues to provide a power source for illumination, and the charging / discharging device is composed of a chargeable / dischargeable battery, or a monopolar, bipolar capacitor, or spar capacitor.

(Seventh embodiment)
A seventh embodiment of the present invention is shown in FIG. Fig. 7 shows the application of reverse polarity series connection type LED to AC power supply, first connecting LED and current limiting impedance element in series, connecting in parallel with charging / discharging device, and connecting in series with blocking diode (backflow prevention diode). FIG. 5 is an explanatory diagram showing a circuit further connected in parallel with the diode.
In the embodiment in which the reverse polarity series connection type LED shown in FIG. 6 and FIG. 7 described above is applied to an AC power source and connected in parallel with a charge / discharge device, a current limiting impedance element (400) and a current limiting impedance element ( 401) and / or the current limiting impedance element (402) may not be provided.

(Eighth and ninth embodiments)
FIG. 8 shows an eighth embodiment of the present invention. FIG. 8 shows an LED circuit in which no impedance element is installed in the embodiment shown in FIG.
A ninth embodiment of the present invention is shown in FIG. FIG. 9 shows an LED circuit in which no impedance element is installed in the embodiment shown in FIG.
When applied to an AC power source, at least one of the voltage limiting element (501) and the voltage limiting element (502) is connected in parallel to at least one of both ends of the diode (201) and the diode (202), and the current limiting impedance By installing at least one of the element (400), the current limiting impedance element (401), and the current limiting impedance element (402), a pressure limiting protection function is configured for the LED. The voltage limiting element described above has a Zener diode or Zener effect, and is constituted by an electric machine or an electronic circuit device.

(10th Embodiment)
A tenth embodiment of the present invention is shown in FIG. FIG. 10 shows an LED circuit in which a voltage limiting element is connected in parallel across the diode in the embodiment shown in FIG.
At least one of the voltage limiting element (501) and the voltage limiting element (502) is connected in parallel to at least one of both ends of the diode (201) and the diode (202), and the reverse polarity series protects the LED and the charging / discharging device. Connected LED and drive circuit. The related functions are as shown in FIGS.

(Eleventh embodiment)
An eleventh embodiment of the present invention is shown in FIG. FIG. 11 shows an LED circuit in which a voltage limiting element is connected in parallel across the diode in the embodiment shown in FIG.
In FIG. 11, the voltage limiting element (502) is provided at both ends of the diode (201) in the circuit shown in FIG. Indicates parallel connection.

(Twelfth embodiment)
A twelfth embodiment of the present invention is shown in FIG. FIG. 12 shows an LED circuit in which a voltage limiting element is connected in parallel across the diode in the embodiment shown in FIG.
In FIG. 12, the voltage limiting element (502) is connected in parallel to at least one of the voltage limiting element (501) and the diode (202) at both ends of the diode (201) in the circuit shown in FIG. Indicates connection.
When this embodiment is applied to the circuit of the embodiment shown in FIGS. 10, 11, and 12 described above, a voltage limiting element (501) and a voltage limiting circuit connected in parallel to at least one of both ends of the diode (201) and the diode (202). At least one of the elements (502) can be connected in parallel to at least one of the LED (101) and the LED (102), and both can be installed.

(Thirteenth, fourteenth and fifteenth embodiments)
A thirteenth embodiment of the present invention is shown in FIG. FIG. 13 shows an LED circuit in which voltage limiting elements are connected in parallel across the LEDs in FIG.
A fourteenth embodiment of the present invention is shown in FIG. FIG. 14 shows an LED circuit in which voltage limiting elements are connected in parallel across the LED in FIG.
A fifteenth embodiment of the present invention is shown in FIG. FIG. 15 shows an LED circuit in which voltage limiting elements are connected in parallel across the LEDs in FIG.

When the LED circuit of the above-described embodiment is actually applied, the following related elements can be selected.
1) The efficiency of the LED (101) and the LED (102), voltage, current, quantity, and series connection or parallel connection or series-parallel connection method can adopt the same or different standards.
2) The emission color of the LED (101) and the LED (102) can be the same color or different colors.
3) At least one of the current limiting impedance element (400), the current limiting impedance element (401), and the current limiting impedance element (402) can adopt the same or different classification elements and the same or different standards.

4) At least one of the current limiting impedance element (400), the current limiting impedance element (401), and the current limiting impedance element (402) is a fixed impedance and a controllable impedance value or a cutting control or a linearity control. The LED (101) and the LED (102) can be controlled or individually controlled simultaneously with the dimming control.
5) The same or different standards can be adopted as the classification and standard of at least one of the charge / discharge device (301) and the charge / discharge device (302).
6) The same or different standard may be adopted as the type and standard of at least one of the voltage limiting element (501) and the voltage limiting element (502).

101, 102 ... LED
201, 202, 203, 204 ... Diode 301, 302 ... Charging / discharging device 400, 401, 402 ... Current limiting impedance element 501, 502 ... Voltage limiting element a ... First LED diode set Independent terminal to be connected b... Reverse first LED diode set and second LED diode set
Connecting terminal connected in series with polarity c. Independent terminal for connecting the second LED diode set

Claims (4)

  1. At least one or several LEDs of the same polarity connected in parallel, or connected in series or in series-parallel form the first LED diode set, and another set includes at least one or several of the same polarity. A second LED diode set is constituted by LEDs connected in parallel to each other in polarity, or in series connection or series-parallel connection, and a reverse polarity series connection type LED connected in series in opposite polarity by the two is formed. It is an LED circuit having a characteristic of performing a necessary operation by connecting to at least one of a charging / discharging device and a pressure limiting circuit device and constituting a driving circuit, and its main configuration is LED (101) , LED (102), diode (201), diode (202),
    The LED (101) is composed of one or more light emitting diodes connected in parallel to the same pole, or a series connection or a series-parallel connection.
    The LED (102) is configured by connecting one or more light-emitting diodes in parallel to the same pole, or by serial connection or series-parallel connection.
    The diode (201) and the diode (202) are configured by connecting one or more rectifier diodes or a circuit device having the same function in one direction in parallel, or by series connection or series-parallel connection,
    The LED (101) and the diode (201) are connected in parallel with each other through a reverse conduction current to form a first LED diode set, and the LED (102) and the diode (202) are connected in parallel with each other through a reverse conduction current, Configuring a second LED diode set;
    The first LED diode set and the second LED diode set are connected in series in reverse polarity to constitute a reverse polarity series connection type LED, in which an independent terminal connecting the first LED diode set is the a end, The connection end of the 1 LED diode set and the second LED diode set connected in series with opposite polarity is the b end, and the independent terminal connecting the second LED diode set is the c end,
    The a end and the c end of the reverse polarity series connection type LED are coupled, and the coupling end receives DC electric energy in cooperation with the b end, and passes through the LED (101) and the LED (102). An LED circuit characterized by operating as a function.
  2. When applied to a DC power source, a current is supplied to at least one of the LED (101) and the LED (102) between the DC power source and the connection end of the a-end and c-end of the reverse polarity series connection type LED or the b-end. At least one of the limited impedance element (400), the current limited impedance element (401), and the current limited impedance element (402) can be connected in series,
    Among them, the impedance element is one or more of 1) a resistive impedance element, 2) a linear crystal impedance element, 3) a cutting switch unit comprising a solid phase switch, and 4) a thyristor cutting switch unit. Including impedance elements
    The position where the impedance element is connected in series is as follows: 1) the impedance element and the LED are connected in series, and further connected in parallel with the diode; and 2) the impedance element is connected between the power source and the reverse polarity series-connected LED. The LED circuit according to claim 1, wherein the LED circuit is connected in series, and 3) is connected in parallel with at least one of the LED and the diode, and is further connected in series with the impedance element.
  3.   The efficiency, voltage, current, quantity and the series connection or parallel connection or series-parallel connection method of the LED (101) and LED (102) can adopt the same or different standards, and the LED (101) and LED (102) The LED circuit according to claim 1, wherein the emission colors of the LEDs can be the same color or different colors.
  4. At least one of the current limiting impedance element (400), the current limiting impedance element (401), and the current limiting impedance element (402) may adopt the same or different classification elements and the same or different standards, and the current limiting impedance element (400), at least one of the current limiting impedance element (401) and the current limiting impedance element (402) perform dimming control on the LED as a fixed impedance and a controllable impedance value or cutting control or linearity control. At the same time, the LED circuit according to claim 2 , characterized in that the LED (101) and the LED (102) can be controlled or individually controlled.
JP2010187280A 2010-08-24 2010-08-24 LED circuit Active JP5740115B2 (en)

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JP5740115B2 true JP5740115B2 (en) 2015-06-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020043943A1 (en) * 2000-10-10 2002-04-18 Menzer Randy L. LED array primary display light sources employing dynamically switchable bypass circuitry
CN2694702Y (en) * 2004-04-02 2005-04-20 张哲铭 Decoration lamp and lamp string
CN201369848Y (en) * 2008-01-14 2009-12-23 杨泰和 LED bidirectional driver circuit of bidirectional electrical impedance voltage division

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