WO2017020219A1

WO2017020219A1 - Activation system applicable to led lighting device and led lighting device

Info

Publication number: WO2017020219A1
Application number: PCT/CN2015/085918
Authority: WO
Inventors: 陈忠; 孙骁; 吴昕
Original assignee: 常州明石晶电科技有限公司
Priority date: 2015-08-03
Filing date: 2015-08-03
Publication date: 2017-02-09

Abstract

An activation system applicable to a light emitting diode (LED) lighting device and an LED lighting device. The activation system comprises an electrical ballast (1) and a trigger unit (2). The activation system provides, by configuring the trigger unit (2) to cooperate with the electrical ballast (1), a high-impedance load environment during a start period in activation, and a low-impedance load environment after the electrical ballast (1) resonates, providing a favorable resonation activating environment for the electrical ballast (1). The activation system enables an LED light source to cooperate with the electrical ballast, and presents removing the electrical ballast when replacing an LED light source with a fluorescent light, thereby saving a replacement cost when replacing an LED light source with a fluorescent light.

Description

Starter system for LED lighting device and LED lighting device

Technical field

The present invention relates to the field of electronic circuit technologies, and in particular, to a starting system for an LED lighting device and an LED lighting device.

Background technique

LED (Light Emitting Diode) illumination is often used to replace fluorescent lamps as conventional light sources due to their high light efficiency, long life and low cost.

However, in the use scenario in which the LED light source replaces the fluorescent lamp, there are the following problems:

If you choose to remove or directly bypass the electronic ballast used with the fluorescent lamp, the replacement cost will increase;

If the electronic ballast is retained, some of the electronic ballasts in actual use cannot create good conditions for the starting of the electronic ballast because the LED light source exhibits a relatively low impedance.

Summary of the invention

The technical problem solved by the embodiment of the present invention is to replace the use of the fluorescent lamp with the LED light source, how to make the LED light source adapt to the operation of the electronic ballast, thereby saving the cost of replacing the fluorescent lamp with the LED light source.

To solve the above problems, an embodiment of the present invention provides a booting system for an LED lighting device, including: an electronic ballast and a trigger unit;

The electronic ballast is adapted to generate a high voltage to break down a high-impedance load at the initial stage of starting the LED lighting device, and provide a constant current for the LED light source of the LED lighting device after the oscillating;

The triggering unit is adapted to present a high-impedance load environment at an initial stage of activation of the LED lighting device to adapt to the electronic ballast requiring a high-impedance load environment, exhibiting low impedance after the electronic ballast is oscillated surroundings.

Optionally, the trigger unit comprises a self-opening device.

Optionally, the self-opening device comprises a high voltage trigger diode;

The first end of the high voltage trigger diode is adapted to access an output signal of the electronic ballast; the second end of the high voltage trigger diode serves as an output of the starting system.

Optionally, the self-opening device comprises a bidirectional thyristor;

The gate of the triac is shorted to the cathode, or connected in series with a resistor, and then shorted to the cathode, or vacant;

The anode of the triac is adapted to access an output signal of the electronic ballast; the cathode of the triac acts as an output of the startup system.

Optionally, the self-opening device comprises a first unidirectional thyristor;

The gate of the first unidirectional thyristor is short-circuited with the cathode, or connected in series with a resistor, and then shorted to the cathode, or vacant;

An anode of the first unidirectional thyristor is adapted to be coupled to an output end of a rectifying unit of the LED lighting device to access an output signal of the electronic ballast, the cathode of the first unidirectional thyristor being Start the output of the system.

Optionally, the electronic ballast of the LED lighting device is coupled to one end of the rectifying unit of the LED lighting device, and the triggering unit is coupled to the other end of the rectifying unit.

Optionally, the trigger unit includes a switch unit and a control unit;

The switching unit is adapted to be controlled by the control unit and exhibit a high impedance or low impedance environment under the control of the control unit;

The control unit is adapted to control the switch unit to assume the high impedance environment when the LED lighting device is in an initial stage of startup, and to control the switch unit to exhibit the low impedance environment after the electronic ballast completes oscillating.

Optionally, the switch unit includes: a first triac; a gate of the first triac as a controlled input end of the switch unit, coupled to the control unit; or

The switching unit includes: a second triac and a third bidirectional thyristor, the second bidirectional thyristor is connected in series with the third bidirectional thyristor; and a gate of the second bidirectional thyristor is first controlled as the switching unit An input end coupled to the control unit; a second anode of the third triac is coupled to a second anode of the second triac, and a gate of the third triac serves as the switch unit a second controlled input coupled to the control unit; or

The switch unit includes: a second unidirectional thyristor; a gate of the second unidirectional thyristor as a controlled input end of the switch unit, coupled to the control unit.

Optionally, the control unit includes: a charging circuit and a switching device;

The charging circuit is adapted to start charging when the ballast starts to supply power when the LED lighting device is started until the charging voltage reaches an opening voltage of the switching device, and discharge from the discharging end to the switching device;

The switching device is adapted to be turned on when a charging voltage of the charging circuit reaches an opening voltage of the switching device to turn on the switching unit.

Optionally, the control unit further includes a current limiting device adapted to limit a current signal that controls the switching unit to protect the switching unit.

Optionally, the switch unit includes: a first bidirectional thyristor;

The gate of the first triac is used as a controlled input end of the switch unit, and is coupled to the control unit.

Optionally, the charging circuit includes: a first resistor, a first diode, and a first capacitor;

The first end of the first resistor is coupled to the first anode of the first triac;

The anode of the first diode is coupled to the second end of the first resistor;

The first end of the first capacitor is coupled to the negative terminal of the first diode, and the second end is used as a discharge end of the charging circuit.

Optionally, the charging circuit further includes: a third resistor;

The third resistor is in parallel with the first capacitor.

Optionally, the switching device includes: a first bidirectional trigger diode;

The first bidirectional trigger diode is adapted to be turned on when a charging voltage of the charging circuit reaches its turn-on voltage to turn on the switching unit;

a first end of the first bidirectional trigger diode is coupled to a discharge end of the charging circuit and serves as a first end of the switching device, and a second end of the first bidirectional trigger diode serves as a first end of the switching device Two ends.

Optionally, the current limiting device includes: a second resistor;

The first end of the second resistor is coupled to the gate of the first triac, and the second end of the second resistor is coupled to the second end of the switching device.

Optionally, the charging circuit includes: a first resistor, a second diode, a third diode, and a first capacitor;

The anode of the second diode is coupled to the second end of the first resistor;

a first end of the first capacitor is coupled to a negative end of the second diode, and a second end is used as a discharge end of the charging circuit;

A cathode of the third diode is coupled to an anode of the second diode, and a cathode of the third diode is coupled to a second end of the first capacitor.

a cathode of the second diode is coupled to a second end of the first resistor;

a first end of the first capacitor is coupled to an anode of the second diode, and a second end is used as a discharge end of the charging circuit;

The anode of the third diode is coupled to the cathode of the second diode, and the cathode of the third diode is coupled to the second terminal of the first capacitor.

Optionally, the switch unit includes: a second triac and a third bidirectional thyristor;

The second bidirectional thyristor is connected in series with the third bidirectional thyristor, and the gate of the second bidirectional thyristor is coupled to the control unit as a first controlled input end of the switch unit;

a second anode of the third triac is coupled to a second anode of the second triac, and a gate of the third triac serves as a second controlled input end of the switch unit, coupled to the second anode Said control unit.

Optionally, the charging circuit includes: a fourth resistor, a fifth resistor, a fourth diode, a fifth diode, a sixth diode, a seventh diode, and a second capacitor;

The first end of the fourth resistor is coupled to the first anode of the second triac;

a cathode of the fourth diode is coupled to a second end of the fourth resistor, and a cathode of the fourth diode is coupled to a second anode of the second triac;

The anode of the fifth diode is coupled to the cathode of the fourth diode;

The anode of the sixth diode is coupled to the anode of the fourth diode;

a positive pole of the seventh diode is coupled to a cathode of the sixth diode, and a cathode of the seventh diode is coupled to a cathode of the fifth diode;

a first end of the second capacitor is coupled to an anode of the fourth diode, and a second end of the second capacitor is coupled to a cathode of the fifth diode and serves as the charging circuit Discharge end

The first end of the fifth resistor is coupled to the first anode of the third triac, and the second end of the fifth resistor is coupled to the cathode of the sixth diode.

Optionally, the charging circuit further includes: an eighth resistor;

The eighth resistor is in parallel with the second capacitor.

Optionally, the switching device includes: a second bidirectional trigger diode;

a first end of the second bidirectional trigger diode is coupled to a discharge end of the charging circuit and serves as a first end of the switching device, and a second end of the second bidirectional trigger diode serves as a first end of the switching device Two ends.

Optionally, the current limiting device includes: a sixth resistor and a seventh resistor;

a first end of the sixth resistor is coupled to the second end of the switching device, and a second end of the sixth resistor is coupled to a gate of the second triac;

The first end of the seventh resistor is coupled to the second end of the switching device, and the second end of the seventh resistor is coupled to the gate of the third triac.

Optionally, the switch unit includes: a second unidirectional thyristor;

The gate of the second unidirectional thyristor is coupled to the control unit as a controlled input end of the switch unit.

Optionally, the charging circuit includes: an eighth diode, a ninth diode, a tenth diode, an eleventh diode, a ninth resistor, and a third capacitor;

a cathode of the eighth diode is coupled to an anode of the second unidirectional thyristor;

a cathode of the ninth diode is coupled to an anode of the eighth diode, and a cathode of the ninth diode is coupled to a cathode of the second thyristor;

The negative electrode of the tenth diode is coupled to the negative electrode of the eighth diode;

The anode of the eleventh diode is coupled to the anode of the ninth diode, and the cathode of the eleventh diode is coupled to the anode of the tenth diode;

The first end of the ninth resistor is coupled to the negative electrode of the eighth diode;

The first end of the third capacitor is coupled to the second end of the ninth resistor and serves as a discharge end of the charging circuit, and the second end of the third capacitor and the anode of the ninth diode Coupling.

Optionally, the charging circuit further includes: an eleventh resistor;

The eleventh resistor is connected in parallel with the third capacitor.

Optionally, the switching device includes: a third bidirectional trigger diode;

a first end of the third bidirectional trigger diode is coupled to a discharge end of the charging circuit and serves as a first end of the switching device, and a second end of the third bidirectional trigger diode serves as a first end of the switching device Two ends.

Optionally, the current limiting device includes: a tenth resistor;

The first end of the tenth resistor is coupled to the second end of the switching device, and the second end of the tenth resistor is coupled to the gate of the second single thyristor.

Optionally, the electronic ballast of the LED lighting device is coupled to one end of the rectifying unit of the LED lighting device, and the triggering unit is coupled to the other end of the rectifying unit; or

An electronic ballast of the LED lighting device is coupled to one end of the trigger unit, and a rectifying unit of the LED lighting device is coupled to the other end of the trigger unit.

An embodiment of the present invention further provides an LED lighting device, comprising the starting system for an LED lighting device according to any of the preceding claims.

Compared with the prior art, the beneficial effect of the embodiment of the present invention is that the starting system provides a high-impedance load environment at the initial stage of startup by setting a trigger unit that cooperates with the electronic ballast, after the electronic ballast is started. Presenting a low-impedance environment, the electronic ballast has a good starting environment. The starting system enables the LED light source to work with the electronic ballast to avoid removing the ballast when the LED light source replaces the fluorescent lamp, thereby saving the replacement cost of the LED light source replacing the fluorescent lamp.

DRAWINGS

1 is a schematic structural view of a starting system for an LED lighting device according to an embodiment of the present invention;

2 is a schematic structural view of a starting system for an LED lighting device according to an embodiment of the present invention;

3 is a schematic structural view of a starting system for an LED lighting device according to an embodiment of the present invention;

4 is a schematic structural view of a starting system for an LED lighting device according to an embodiment of the present invention;

5 is a schematic structural view of a starting system for an LED lighting device according to an embodiment of the present invention;

6 is a circuit diagram of a trigger unit in an embodiment of the present invention;

7 is a circuit diagram of a trigger unit in an embodiment of the present invention;

8 is a circuit diagram of a trigger unit in an embodiment of the present invention;

9 is a circuit diagram of a trigger unit in an embodiment of the present invention;

10 is a circuit diagram of a trigger unit in an embodiment of the present invention;

11 is a schematic structural view of an LED device according to an embodiment of the present invention.

detailed description

As previously mentioned, when the LED light source is replaced with a fluorescent light source, removing or bypassing the electronic ballast increases the cost of replacement. If the ballast is retained, the low-resistance characteristics of the LED light source itself make some ballasts unable to start due to the high-impedance environment.

In the embodiment of the invention, a triggering unit is coupled to the signal output end of the electronic ballast, so that the electronic ballast has a good starting environment, and the LED light source is adapted to the electronic ballast to prevent the LED light source from being removed when the fluorescent lamp is replaced. Ballast, saving LED light The replacement cost of the source replacement fluorescent lamp.

The above described objects, features, and advantages of the present invention will be more apparent from the aspects of the invention.

1 is a schematic structural view of a starting system for an LED lighting device in an embodiment of the present invention. The starting system for the LED lighting device may include an electronic ballast 1 and a trigger unit 2.

In a specific implementation, the electronic ballast 1 is adapted to generate a high voltage to break down a high-impedance load at the initial stage of starting the LED lighting device, and provide a constant current for the LED light source of the LED lighting device after the starting;

The trigger unit 2 is adapted to present a high-impedance load environment at the beginning of the startup of the LED lighting device to adapt to the electronic ballast 1 requiring a high-impedance load environment after the electronic ballast 1 starts to oscillate Presents a low impedance environment.

In an implementation, the electronic ballast 1 may be coupled to one end of the rectifying unit 3 of the LED lighting device, and the triggering unit 2 may be coupled to the other end of the rectifying unit 3, One end is coupled to the smoothing filter unit 4 of the LED lighting device.

The trigger unit 2 according to the embodiment of the present invention exhibits a high impedance before the peak voltage generated by the electronic ballast 1 is broken, which creates a good condition for the starting of the electronic ballast 1 . After the electronic ballast 1 breaks through the trigger unit 2, a discharge channel is established therein, and a steady current is maintained to continuously supply the LED light source.

2 is a schematic structural view of a starting system for an LED lighting device in an embodiment of the present invention. The starting system for the LED lighting device may include an electronic ballast 1 and a trigger unit 2.

In a specific implementation, one end of the trigger unit 2 can be coupled to the electronic ballast 1 and the other end can be coupled to the rectifying unit 3.

In a specific implementation, the connection method as described above requires current to flow in a positive or negative direction. When the unit 2 is emitted, it can exhibit a high-resistance state before being broken down, and exhibits a low-resistance state after the breakdown.

3 is a schematic structural view of a starting system for an LED lighting device in an embodiment of the present invention. The starting system for the LED lighting device may include an electronic ballast 1 and a trigger unit 2.

In a specific implementation, in conjunction with FIG. 2 , one end of the trigger unit 2 can be coupled to the electronic ballast 1 , and the other end of the trigger unit 2 can be coupled to the rectifying unit 3 .

In a specific implementation, the trigger unit 2 may include a self-on device S0. The self-on device S0 has a certain breakdown voltage V, which exhibits a high resistance state before being broken down and a low resistance state after being broken down.

In a specific implementation, as shown in FIG. 3, the self-ON device S0 may be a high voltage trigger diode; the first end of the high voltage trigger diode is adapted to access an output signal of the electronic ballast, and the second end is used as The output of the startup system.

It should be noted that FIG. 3 only shows the case where the self-turn-on device S0 is a high-voltage trigger diode. In the specific implementation, the self-turn-on device S0 may also be a triac or a bidirectional trigger diode. If a bidirectional thyristor is used in a specific implementation, the gate of the triac can be shorted to the cathode, or connected in series with a resistor, and then shorted to the cathode, or vacant without connecting to any circuit. The anode of the silicon control is adapted to access an output signal of the electronic ballast, the cathode of the triac being the output of the starting system.

It should be noted that, when the trigger unit 2 is coupled between the electronic ballast 1 and the rectifying unit 3, the self-opening device is required to be a bidirectional device, and when the opening device is In the case of a unidirectional device, such as a unidirectional thyristor, the rectifying unit is coupled between the electronic ballast 1 and the unidirectional device.

4 is a schematic structural view of a starting system for an LED lighting device in an embodiment of the present invention. The starting system for the LED lighting device may include an electronic ballast 1 and a trigger unit 2.

In a specific implementation, in conjunction with FIG. 1, one end of the trigger unit 2 can be coupled to the rectifying unit 3, and the other end of the trigger unit 2 can be flat with the LED lighting device. The sliding filter unit 4 is coupled.

In a specific implementation, as shown in FIG. 4, the self-ON device S0 may be a first unidirectional thyristor, and an anode of the first unidirectional thyristor is adapted to be coupled to the rectifying unit 3 of the LED lighting device. The output signal of the electronic ballast after passing through the rectifying unit, the cathode serving as an output end of the starting system, the gate of the first unidirectional thyristor may be short-circuited with the cathode, or may be connected in series with a resistor and the cathode Shorted, or vacant, not connected to any circuit,

In a specific implementation, when the self-opening device S0 is a unidirectional thyristor, the rectifying unit 3 of the LED lighting device is coupled between the electronic ballast 1 and the triggering unit 2.

It should be noted that FIG. 4 only shows the case where the self-turn-on device S0 is a unidirectional thyristor. In the specific implementation, the self-turn-on device S0 may also be a triac, a bidirectional trigger diode, and a high voltage trigger diode. When the self-opening device S0 is a triac, the gate of the triac may be short-circuited with the cathode, or may be short-circuited with the cathode in series with a resistor, or left unconnected with any circuit. When the self-opening device S0 is a bidirectional trigger diode or a high voltage trigger diode, a first end of the bidirectional trigger diode or high voltage trigger diode is coupled to the rectifying unit 3, and a second end is used as an output end of the starting system .

FIG. 5 is a schematic structural view of a starting system for an LED lighting device in an embodiment of the present invention. The starting system for the LED lighting device may include an electronic ballast 1 and a trigger unit 2.

In a specific embodiment, the trigger unit 2 may include: a switch unit 201 and a control unit 202; the switch unit 201 is adapted to be controlled by the control unit 202, exhibiting high impedance or low under the control of the control unit 202 Impedance

The control unit 202 is adapted to control the switching unit 201 to exhibit a high impedance when the LED lighting device is initially activated, and to control the switching unit 201 to exhibit the low impedance when the electronic ballast completes the oscillating.

In a specific implementation, the switch unit 201 can adopt a bidirectional thyristor, a triac group, or a unidirectional thyristor, and details are not described herein.

In a specific implementation, the control unit 202 may include: a charging circuit 5, a switching device 6;

The charging circuit 5 is adapted to start charging when the ballast starts to supply power at the start of the LED lighting device until the charging voltage reaches the turn-on voltage of the switching device, and discharge from the discharging end to the switching device 6;

The switching device 6 is adapted to be turned on when the charging voltage of the charging circuit 5 reaches the turning-on voltage of the switching device to turn on the switching unit 201.

In a specific embodiment, the control unit 202 may further include a current limiting device adapted to limit the current signal of the switching unit 201 to protect the switching unit 201.

FIG. 6 is a circuit diagram of a trigger unit according to an embodiment of the present invention, which will be described below with reference to FIG. 5. The trigger unit 2 may include a switch unit 201 and a control unit 202.

In a specific implementation, the switch unit 201 may include: a first triac S1; a gate of the first triac S1 as a controlled input end of the switch unit 201, coupled to the control unit 202.

In a specific implementation, the control unit 202 may include a charging circuit 5, a switching device 6, and a current limiting device.

In a specific implementation, the charging circuit 5 may include: a first resistor R1, a first diode D1 and a first capacitor C1;

The first end of the first resistor R1 is coupled to the first anode of the first triac S1;

The anode of the first diode D1 is coupled to the second end of the first resistor R1;

The first end of the first capacitor C1 is coupled to the cathode of the first diode D1, and the second end serves as a discharge end of the charging circuit 5.

In a specific embodiment, the charging circuit 5 may further include: a third resistor R3;

The third resistor R3 is connected in parallel with the first capacitor C1. The first capacitor C1 is slowly discharged by setting the third resistor R3.

In a specific embodiment, the switching device 6 may include: a first bidirectional trigger diode T1; the first bidirectional trigger diode T1 is adapted to be turned on when the charging voltage of the charging circuit 5 reaches its turn-on voltage The switch unit 201;

The first end of the first bidirectional trigger diode T1 is coupled to the second end of the first capacitor as the discharge end of the charging circuit 5, and as the first end of the switching device 6, the first bidirectional trigger The second end of the diode T1 serves as the second end of the switching device 6.

In a specific implementation, the current limiting device may be a second resistor R2, the first end of the second resistor R2 is coupled to the gate of the first triac S1, and the second end of the second resistor R2 is The second end of the first bidirectional trigger diode T1 is coupled to the second end of the switching device 6. The second resistor R2 is adapted to protect the switching unit 201.

In the embodiment of the present invention, by setting the charging circuit 5 and the first bidirectional trigger diode T1, in the initial stage of starting the LED lighting device, the charging circuit 5 is continuously charged within a certain time constant T, and the gate of the first triac S1 has no current flow. The high impedance state has been exhibited for a long time, creating a vibration-rising condition for the electronic ballast, in which the electronic ballast is in a state ready to establish an output high voltage. When the voltage of the first capacitor C1 in the charging circuit 5 reaches the turn-on voltage of the first bidirectional trigger diode T1, the electronic ballast reaches the peak voltage in the time T, and the first bidirectional trigger diode T1 leads. The current flows through the gate of the first triac S1, and the first triac S1 as the switching unit 201 is turned on, that is, in a low resistance state.

The state of the first triac S1 in the embodiment of the present invention from the off to the on state realizes that the switch unit 201 changes from high resistance to low resistance, so that the electronic ballast is completed. The vibration and LED light source are continuously powered by the ballast.

FIG. 7 is a circuit diagram of a trigger unit according to an embodiment of the present invention, which will be described below with reference to FIG. 5. The trigger unit 2 may include a switch unit 201 and a control unit 202.

In a specific implementation, the charging circuit 5 may include: a first resistor R1, a second diode D2, a third diode D3 and a first capacitor C1;

The anode of the second diode D2 is coupled to the second end of the first resistor R1;

The first end of the first capacitor C1 is coupled to the cathode of the second diode D2, and the second end is used as the discharge end of the charging circuit 5;

The anode of the third diode D3 is coupled to the anode of the second diode D2, and the anode of the third diode D3 is coupled to the second terminal of the first capacitor C1.

The first end of the first bidirectional trigger diode T1 is coupled to the first end of the first capacitor C1.

In a specific implementation, the current limiting device may be a second resistor R2, the first end of the second resistor R2 is coupled to the gate of the first triac S1, and the second resistor R2 is second. The terminal is coupled to the second end of the first bidirectional trigger diode T1 which is the second end of the switching device 6. The second resistor R2 is adapted to protect the switching unit 201.

In the embodiment of the present invention, by setting the charging circuit 5 and the first bidirectional trigger diode T1, in the initial stage of starting the LED lighting device, the charging circuit 5 is continuously charged within a certain time constant T, and the first triac S1 has no current flowing through the gate. Therefore, a high impedance state has been exhibited, creating a starting condition for the electronic ballast, in which the electronic ballast is in a state ready to establish an output high voltage. When the voltage of the first capacitor C1 in the charging circuit 5 reaches the turn-on voltage of the first bidirectional trigger diode T1, the electronic ballast reaches the peak voltage in the time T, and the first bidirectional trigger diode T1 leads. The current flows through the gate of the first triac S1, and the first triac S1 as the switching unit 201 is turned on, that is, in a low resistance state.

In the embodiment of the present invention, the first bidirectional thyristor S1 is turned from off to on to realize that the switching unit 201 changes from high resistance to low resistance, so that the electronic ballast completes the oscillating, and the LED light source obtains the ballast. Continuous power supply.

FIG. 8 is a circuit diagram of a trigger unit according to an embodiment of the present invention, which will be described below with reference to FIG. 5. The trigger unit 2 may include a switch unit 201 and a control unit 202.

In a specific implementation, the charging circuit 301 may include: a first resistor R1, a second diode D2, a third diode D3, and a first capacitor C1, and the device included in the charging circuit 5 may be the same as in FIG. The illustrated charging circuit 5 includes the same components, but can be changed in the following manner:

The cathode of the second diode D2 is coupled to the second end of the first resistor R1;

The first end of the first capacitor C1 is coupled to the anode of the second diode D2;

The anode of the third diode D3 is coupled to the cathode of the second diode D2, and the cathode of the third diode D3 is coupled to the second terminal of the first capacitor C1.

In a specific implementation, the current limiting device may be a second resistor R2, and the switching device 6, the second resistor R2, and the charging circuit 5 in the embodiment are connected to the switching device 6 in FIG. The second resistor R2 and the charging circuit 5 are connected in the same manner, and the functions of the charging circuit 5, the switching device 6, and the second resistor R2 described in FIG. 7 are the charging circuit 5 and the switching device 6 described in FIG. The function of the second resistor R2 is the same and will not be described here.

FIG. 9 is a circuit diagram of a trigger unit according to an embodiment of the present invention, which will be described below with reference to FIG. 5. The trigger unit 2 may include a switch unit 201 and a control unit 202.

In a specific implementation, the switch unit 201 may include: a second triac S2 and a third bidirectional thyristor S3;

The second bidirectional thyristor S2 is connected in series with the third bidirectional thyristor S3, the gate of the second bidirectional thyristor S2 is coupled to the control unit 202 as a first controlled input end of the switching unit 201;

a second anode of the third triac S3 is coupled to a second anode of the second triac S2, and a gate of the third triac S3 serves as a second controlled input of the switching unit 201. The control unit 202 is coupled to the control unit 202.

In a specific implementation, the control unit 202 may include: a charging circuit 5 and a switching device 6, and a current limiting device.

In a specific implementation, the charging circuit 5 may include: a fourth resistor R4, a fifth resistor R5, a fourth diode D4, a fifth diode D5, a sixth diode D6, and a seventh diode D7. And a second capacitor C2;

The first end of the fourth resistor R4 and the first anode of the second triac S2 Polar coupling

The anode of the fourth diode R4 is coupled to the second end of the fourth resistor R4, and the anode of the fourth diode D4 is coupled to the second anode of the second triac S2;

The anode of the fifth diode D5 is coupled to the cathode of the fourth diode D4;

The anode of the sixth diode D6 is coupled to the anode of the fourth diode D4;

The anode of the seventh diode D7 is coupled to the cathode of the sixth diode D6, and the cathode of the seventh diode D7 is coupled to the cathode of the fifth diode D5.

The first end of the second capacitor C2 is coupled to the anode of the fourth diode D4, and the second end of the second capacitor C2 is coupled to the cathode of the fifth diode D5 and a discharge end of the charging circuit 5;

The first end of the fifth resistor R5 is coupled to the first anode of the third triac S3, and the second end of the fifth resistor R5 is coupled to the cathode of the sixth diode D6.

In a specific implementation, the charging circuit 5 may further include: an eighth resistor R8;

The eighth resistor R8 is connected in parallel with the second capacitor C2. The second capacitor C2 is slowly discharged by setting the eighth resistor R8.

In a specific implementation, the switching device 6 may include: a second bidirectional trigger diode T2;

a first end of the second bidirectional trigger diode T2 is coupled to a second end of the second capacitor C2 that is a discharge end of the charging circuit 5, and serves as a first end of the switching device 6; The second end of the two-way trigger diode T2 serves as the second end of the switching device 6.

In a specific implementation, the current limiting device may include a sixth resistor R6 and a seventh resistor R7;

a first end of the sixth resistor R6 is coupled to a second end of the second bidirectional trigger diode T2 as a second end of the switching device 6, and a second end of the sixth resistor R6 is opposite to the first end The gate of the two-way thyristor S1 is coupled;

The first end of the seventh resistor R7 is coupled to the second end of the second bidirectional trigger diode T2 as the second end of the switching device 6, and the second end of the seventh resistor R7 is opposite to the first The gate of the three-way thyristor S3 is coupled. The sixth resistor R6 and the seventh resistor R7 are adapted to protect the switching unit 201.

In the embodiment of the present invention, by setting the charging circuit 5 and the second bidirectional trigger diode T2, the charging circuit 5 is continuously charged within a certain time constant T at the initial stage of starting the LED lighting device, and the second triac S2 and the third triac S3 are charged. The gate has a high impedance state since it has no current flowing, creating a start-up condition for the electronic ballast, in which the electronic ballast is in a state ready to establish an output high voltage. When the second capacitor C2 in the charging circuit 5 reaches the turn-on voltage of the second bidirectional trigger diode T2 after the time T, the electronic ballast reaches the peak voltage in the time T, and the second bidirectional trigger diode T2 leads. The current flows through the gates of the second triac S2 and the third triac S3, and the second triac S2 and the third triac S3 as the switching unit 201 are turned on, that is, in the low resistance state.

In the embodiment of the present invention, the second bidirectional thyristor S2 and the third bidirectional thyristor S3 are turned from off to on, and the switching unit 201 is changed from high resistance to low resistance, so that the electronic ballast is oscillated. The LED light source is continuously powered by the ballast.

FIG. 10 is a circuit diagram of a trigger unit 2 according to an embodiment of the present invention, which will be described below in conjunction with FIG. 5. The trigger unit 2 may include a switch unit 201 and a control unit 202.

In a specific implementation, the switch unit 201 may include: a second unidirectional thyristor S4;

The gate of the unidirectional thyristor S4 is coupled to the control unit 202 as a controlled input terminal of the switch unit 201.

In a specific implementation, the control unit 202 may include: a charging circuit 5 and a switch Device 6, current limiting device.

In a specific implementation, the charging circuit 5 may include: an eighth diode D8, a ninth diode D9, a tenth diode D10, an eleventh diode D11, a ninth resistor R9, and a third capacitor. C3;

The anode of the eighth diode D8 is coupled to the anode of the unidirectional thyristor S4;

The anode of the ninth diode D9 is coupled to the anode of the eighth diode D8, and the anode of the ninth diode D9 is coupled to the cathode of the unidirectional thyristor S4;

The negative electrode of the tenth diode D10 is coupled to the negative electrode of the eighth diode D8;

The anode of the eleventh diode D11 is coupled to the anode of the ninth diode D9, and the anode of the eleventh diode D11 is coupled to the anode of the tenth diode D10;

The first end of the ninth resistor R9 is coupled to the cathode of the eighth diode D8;

a first end of the third capacitor C3 is coupled to the second end of the ninth resistor R9, and as a discharge end of the charging circuit 5, a second end of the third capacitor C3 and the ninth The anode of the diode D9 is coupled.

In a specific implementation, the charging circuit 5 may further include: an eleventh resistor R11;

The eleventh resistor R11 is connected in parallel with the third capacitor C3. The third capacitor C3 is slowly discharged by setting the eleventh resistor R11.

In a specific implementation, the switching device 6 may include: a third bidirectional trigger diode T3;

a first end of the third bidirectional trigger diode T3 is coupled to a first end of the third capacitor C3 that is a discharge end of the charging circuit 5, and serves as a first end of the switching device 6; The second end of the triac is used as the second end of the switching device 6.

In a specific implementation, the current limiting device may be a tenth resistor R10, and the tenth The first end of the resistor R10 is coupled to the second end of the third bidirectional trigger diode T3 as the second end of the switching device 6, the second end of the tenth resistor R10 and the gate of the single thyristor S4 Polar coupling. The tenth resistor R10 is adapted to protect the switching unit 201.

In the embodiment of the present invention, by setting the charging circuit 5 and the third bidirectional trigger diode T3T3 as a switching device, the charging circuit 5 is continuously charged in a certain time constant T at the initial stage of the LED lighting device, and the fourth triac S4 gate The high-impedance state is always present after no current flows, creating a start-up condition for the electronic ballast, in which the electronic ballast is in a state ready to establish an output high voltage. When the third capacitor C3 in the charging circuit 5 reaches the turn-on voltage of the third bidirectional trigger diode T3 after the time T, the electronic ballast reaches the peak voltage in the time T, and the third bidirectional trigger diode T3 leads. The current flows through the gate of the fourth triac S4, and the fourth triac S4 as the switching unit 201 is turned on, that is, in a low resistance state.

The state of the fourth triac S4 in the embodiment of the present invention is from a high impedance to a low resistance, so that the electronic ballast is completed and the LED light source is obtained. Continuous power supply to the flow.

The embodiment of the invention further provides an LED lighting device 1100, which adopts a starting system for an LED lighting device according to an embodiment of the invention. The LED lighting device 1100 may include an electronic ballast 1101, a trigger unit 1102, a rectifying unit 1103, a smoothing filtering unit 1104, and an LED load 1105.

In a specific implementation, the trigger unit 1102 can be coupled between the electronic ballast 1101 and the rectifying unit 1103, and FIG. 11 shows the coupling manner; or

The rectifying unit 1103 can be coupled between the electronic ballast 1101 and the trigger unit 1102.

In a specific implementation, when the trigger unit uses a unidirectional device as the self-opening device S0 described in FIG. 4, only the rectifying unit 1103 can be coupled to the electronic ballast 1101 and the trigger unit 1102. The way of coupling between them.

Although the present invention has been disclosed above, the present invention is not limited thereto. Any changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be determined by the scope defined by the appended claims.

Claims

A starting system for an LED lighting device, comprising: an electronic ballast and a trigger unit;

The electronic ballast is adapted to generate a high voltage to break down a high-impedance load at the initial stage of starting the LED lighting device, and provide a constant current for the LED light source of the LED lighting device after the oscillating;

The triggering unit is adapted to present a high-impedance load environment at an initial stage of activation of the LED lighting device to adapt to the electronic ballast requiring a high-impedance load environment, exhibiting low impedance after the electronic ballast is oscillated surroundings.
The activation system for an LED lighting device according to claim 1, wherein the trigger unit comprises a self-opening device.
The starting system for an LED lighting device according to claim 2, wherein said self-opening device comprises a high voltage triggering diode;

The first end of the high voltage trigger diode is adapted to access an output signal of the electronic ballast; the second end of the high voltage trigger diode serves as an output of the starting system.
The starting system for an LED lighting device according to claim 2, wherein the self-opening device comprises a triac;

The gate of the triac is shorted to the cathode, or connected in series with a resistor, and then shorted to the cathode, or vacant;

The anode of the triac is adapted to access an output signal of the electronic ballast; the cathode of the triac acts as an output of the startup system.
The starting system for an LED lighting device according to claim 2, wherein said self-opening device comprises a first unidirectional thyristor;

The gate of the first unidirectional thyristor is short-circuited with the cathode, or connected in series with a resistor, and then shorted to the cathode, or vacant;

An anode of the first unidirectional thyristor is adapted to be coupled to an output end of a rectifying unit of the LED lighting device to access an output signal of the electronic ballast, the cathode of the first unidirectional thyristor being Start the output of the system.
The starting system for an LED lighting device according to claim 5, wherein an electronic ballast of the LED lighting device is coupled to one end of a rectifying unit of the LED lighting device, and the trigger unit is coupled The other end of the rectifying unit.
The starting system for an LED lighting device according to claim 1, wherein the trigger unit comprises a switching unit and a control unit;

The switching unit is adapted to be controlled by the control unit and exhibit a high impedance or low impedance environment under the control of the control unit;

The control unit is adapted to control the switch unit to assume the high impedance environment when the LED lighting device is in an initial stage of startup, and to control the switch unit to exhibit the low impedance environment after the electronic ballast completes oscillating.
The starting system for an LED lighting device according to claim 7, wherein the switching unit comprises: a first triac; a gate of the first triac serves as a controlled input of the switching unit Connected to the control unit; or

The switching unit includes: a second triac and a third bidirectional thyristor, the second bidirectional thyristor is connected in series with the third bidirectional thyristor; and a gate of the second bidirectional thyristor is first controlled as the switching unit An input end coupled to the control unit; a second anode of the third triac is coupled to a second anode of the second triac, and a gate of the third triac serves as the switch unit a second controlled input coupled to the control unit; or

The switch unit includes: a second unidirectional thyristor; a gate of the second unidirectional thyristor as a controlled input end of the switch unit, coupled to the control unit.
The starting system for an LED lighting device according to claim 7, wherein the control unit comprises: a charging circuit and a switching device;

The charging circuit is adapted to start charging when the ballast starts to supply power when the LED lighting device is started until the charging voltage reaches an opening voltage of the switching device, and discharge from the discharging end to the switching device;

The switching device is adapted to be turned on when a charging voltage of the charging circuit reaches an opening voltage of the switching device to turn on the switching unit.
The activation system for an LED lighting device according to claim 7, wherein the control unit further comprises a current limiting device adapted to limit a current signal that controls the switching unit to protect the switching unit.
The starting system for an LED lighting device according to claim 10, wherein the switching unit comprises: a first triac;

The gate of the first triac is used as a controlled input end of the switch unit, and is coupled to the control unit.
The starting system for an LED lighting device according to claim 11, wherein the charging circuit comprises: a first resistor, a first diode, and a first capacitor;

The first end of the first resistor is coupled to the first anode of the first triac;

The anode of the first diode is coupled to the second end of the first resistor;

The first end of the first capacitor is coupled to the negative terminal of the first diode, and the second end is used as a discharge end of the charging circuit.
The starting system for an LED lighting device according to claim 12, wherein the charging circuit further comprises: a third resistor;

The third resistor is in parallel with the first capacitor.
The starting system for an LED lighting device according to claim 11, wherein the switching device comprises: a first bidirectional triggering diode;

The first bidirectional trigger diode is adapted to be turned on when a charging voltage of the charging circuit reaches its turn-on voltage to turn on the switching unit;

a first end of the first bidirectional trigger diode is coupled to a discharge end of the charging circuit, and as a first end of the switching device, a second end of the first bidirectional trigger diode is used as the switching device Second end.
The starting system for an LED lighting device according to claim 11, wherein the current limiting device comprises: a second resistor;

The first end of the second resistor is coupled to the gate of the first triac, and the second end of the second resistor is coupled to the second end of the switching device.
The starting system for an LED lighting device according to claim 11, wherein the charging circuit comprises: a first resistor, a second diode, a third diode, and a first capacitor;

The first end of the first resistor is coupled to the first anode of the first triac;

The anode of the second diode is coupled to the second end of the first resistor;

a first end of the first capacitor is coupled to a negative end of the second diode, and a second end is used as a discharge end of the charging circuit;

A cathode of the third diode is coupled to an anode of the second diode, and a cathode of the third diode is coupled to a second end of the first capacitor.
The starting system for an LED lighting device according to claim 11, wherein the charging circuit comprises: a first resistor, a second diode, a third diode, and a first capacitor;

The first end of the first resistor is coupled to the first anode of the first triac;

a cathode of the second diode is coupled to a second end of the first resistor;

a first end of the first capacitor is coupled to an anode of the second diode, and a second end is used as a discharge end of the charging circuit;

The anode of the third diode is coupled to the cathode of the second diode, and the cathode of the third diode is coupled to the second terminal of the first capacitor.
The starting system for an LED lighting device according to claim 10, wherein the switching unit comprises: a second triac and a third bidirectional thyristor;

The second bidirectional thyristor is connected in series with the third bidirectional thyristor, and the gate of the second bidirectional thyristor is coupled to the control unit as a first controlled input end of the switch unit;

a second anode of the third triac is coupled to a second anode of the second triac, and a gate of the third triac serves as a second controlled input end of the switch unit, coupled to the second anode Said control unit.
The starting system for an LED lighting device according to claim 18, wherein the charging circuit comprises: a fourth resistor, a fifth resistor, a fourth diode, a fifth diode, and a sixth diode a tube, a seventh diode, and a second capacitor;

The first end of the fourth resistor is coupled to the first anode of the second triac;

a cathode of the fourth diode is coupled to a second end of the fourth resistor, and a cathode of the fourth diode is coupled to a second anode of the second triac;

The anode of the fifth diode is coupled to the cathode of the fourth diode;

The anode of the sixth diode is coupled to the anode of the fourth diode;

a positive pole of the seventh diode is coupled to a cathode of the sixth diode, and a cathode of the seventh diode is coupled to a cathode of the fifth diode;

a first end of the second capacitor is coupled to an anode of the fourth diode, and a second end of the second capacitor is coupled to a cathode of the fifth diode and serves as the charging circuit Discharge end

The first end of the fifth resistor is coupled to the first anode of the third triac, and the second end of the fifth resistor is coupled to the cathode of the sixth diode.
The starting system for an LED lighting device according to claim 19, wherein the charging circuit further comprises: an eighth resistor;

The eighth resistor is in parallel with the second capacitor.
The starting system for an LED lighting device according to claim 18, wherein the switching device comprises: a second bidirectional triggering diode;

a first end of the second bidirectional trigger diode is coupled to a discharge end of the charging circuit, and as a first end of the switching device, a second end of the second bidirectional trigger diode serves as the switching device Second end.
The starting system for an LED lighting device according to claim 18, wherein the current limiting device comprises: a sixth resistor and a seventh resistor;

a first end of the sixth resistor is coupled to the second end of the switching device, and a second end of the sixth resistor is coupled to a gate of the second triac;

The first end of the seventh resistor is coupled to the second end of the switching device, and the second end of the seventh resistor is coupled to the gate of the third triac.
The starting system for an LED lighting device according to claim 10, wherein the switching unit comprises: a second unidirectional thyristor;

The gate of the second unidirectional thyristor is coupled to the control unit as a controlled input end of the switch unit.
The starting system for an LED lighting device according to claim 23, wherein the charging circuit comprises: an eighth diode, a ninth diode, a tenth diode, and an eleventh diode a ninth resistor and a third capacitor;

a cathode of the eighth diode is coupled to an anode of the second unidirectional thyristor;

a cathode of the ninth diode is coupled to an anode of the eighth diode, and a cathode of the ninth diode is coupled to a cathode of the second thyristor;

The negative electrode of the tenth diode is coupled to the negative electrode of the eighth diode;

The anode of the eleventh diode is coupled to the anode of the ninth diode, and the cathode of the eleventh diode is coupled to the anode of the tenth diode;

The first end of the ninth resistor is coupled to the negative electrode of the eighth diode;

a first end of the third capacitor is coupled to the second end of the ninth resistor, and as a discharge end of the charging circuit, a second end of the third capacitor and the ninth diode The positive pole is coupled.
The starting system for an LED lighting device according to claim 24, wherein the charging circuit further comprises: an eleventh resistor;

The eleventh resistor is connected in parallel with the third capacitor.
The starting system for an LED lighting device according to claim 23, wherein the switching device comprises: a third bidirectional triggering diode;

a first end of the third bidirectional trigger diode is coupled to a discharge end of the charging circuit, and as a first end of the switching device, a second end of the third bidirectional trigger diode is used as the switching device Second end.
The starting system for an LED lighting device according to claim 23, wherein the current limiting device comprises: a tenth resistor;

The first end of the tenth resistor is coupled to the second end of the switching device, and the second end of the tenth resistor is coupled to the gate of the second single thyristor.
The starting system for an LED lighting device according to any one of claims 1 to 4 or 7 to 27, wherein an electronic ballast of the LED lighting device is coupled to the LED lighting device One end of the rectifying unit, the trigger unit is coupled to the other end of the rectifying unit; or

An electronic ballast of the LED lighting device is coupled to one end of the trigger unit, and a rectifying unit of the LED lighting device is coupled to the other end of the trigger unit.
An LED lighting device comprising the starting system for an LED lighting device according to any one of claims 1 to 28.