Capacitor precharging circuit, LED driving circuit and LED device

Abstract

The present invention is applicable to the field of LED driving technology, and provides a capacitor precharging circuit, an LED driving circuit and an LED device. When the LED is off, the capacitor precharging circuit precharges the filter capacitor of the LED driving circuit, so that the charging time of the filter capacitor when the LED is lit can be effectively shortened, and the lighting of the LED can be accelerated; when the LED is lit, the capacitor precharging circuit is controlled to stop precharging the filter capacitor, so as to effectively avoid interfering with the normal operation of the LED.

Description

Technical Field

[0001] The present invention belongs to the technical field of LEDs, and in particular relates to a capacitor pre-charging circuit, an LED driving circuit and an LED device. Background Art

[0002] LED has many advantages such as energy saving, environmental protection, low price, rich colors and stable performance. It is widely used in LED products such as LED lighting, LED traffic lights, LED display screens, LED backlights, etc.

[0003] However, the output end of the current LED driving circuit is provided with a filter capacitor with a capacity of 10uF or more connected in parallel with the LED, resulting in that when the soft switch controls the LED to be turned off and then turned on through the LED driving circuit, or when the hard switch controls the LED to be turned off and then turned on through the LED driving circuit with a memory function, the startup time of the LED is extended due to the influence of the filter capacitor. When the LED is controlled to light up at a low brightness, the startup time of the LED is even longer, which seriously reduces the use experience of the LED. Summary of the invention

[0004] In view of this, the embodiments of the present invention provide a capacitor precharging circuit, an LED driving circuit and an LED device to solve the problem that when the current soft switch controls the LED to be turned off and then lit up through the LED driving circuit, or when the hard switch controls the LED to be turned off and then lit up through the LED driving circuit with a memory function, the startup time of the LED is extended due to the influence of the filter capacitor. When the LED is controlled to light up at a low brightness, the startup time of the LED is even longer, which seriously reduces the user experience of the LED.

[0005] A first aspect of an embodiment of the present invention provides a capacitor pre-charging circuit, which is applied to an LED driving circuit, wherein the LED driving circuit includes a first driving power supply module, a discharge resistor and a filter capacitor, and the capacitor pre-charging circuit includes a pre-charging module and a pre-charging control module;

[0006] The power input end of the first driving power module is connected to the first power supply; the current output end of the first driving power module is electrically connected to one end of the discharge resistor, the positive electrode of the filter capacitor and the current input end of the LED module; the current output end of the first driving power module is electrically connected to the other end of the discharge resistor, the negative electrode of the filter capacitor, the current output end of the LED module and the output end of the pre-charging module; the controlled end of the first driving power module and the controlled end of the pre-charging control module are connected in communication with the soft switch, or the first driving voltage module has a memory function, and the controlled end of the first driving voltage module and the controlled end of the pre-charging control module are connected in communication with the hard switch;

[0007] The controlled end of the pre-charging module is electrically connected to the output end of the pre-charging control module; the power supply end of the pre-charging control module is connected to a second power supply;

[0008] When the soft switch or the hard switch outputs a first pulse width modulation signal; the first driving power supply module drives the LED module to turn off according to the first pulse width modulation signal; the pre-charging control module controls the pre-charging module to start according to the first pulse width modulation signal to pre-charge the filter capacitor;

[0009] When the soft switch or the hard switch outputs a second pulse width modulation signal; the first driving power supply module drives the LED module to light up according to the second pulse width modulation signal; the pre-charging control module controls the pre-charging module to close according to the second pulse width modulation signal.

[0010] In one embodiment, the pre-charging module includes a first voltage-dividing resistor and a first electronic switch tube;

[0011] One end of the first voltage-dividing resistor is the output end of the pre-charging module, and the other end of the first voltage-dividing resistor is electrically connected to the output end of the first electronic switch tube;

[0012] The controlled end of the first electronic switch tube is the controlled end of the pre-charging module, and the input end of the first electronic switch tube is grounded;

[0013] The pre-charging control module controls the first electronic switch tube to be turned on according to the first pulse width modulation signal, and pre-charges the filter capacitor through the first electronic switch tube and the first voltage divider resistor;

[0014] The pre-charging control module controls the first electronic switch tube to turn off according to the second pulse width modulation signal.

[0015] In one embodiment, the pre-charge control module includes a second electronic switch tube, a second voltage-dividing resistor, a third voltage-dividing resistor and a fourth voltage-dividing resistor;

[0016] The input end of the second electronic switch tube is electrically connected to one end of the second voltage-dividing resistor and the third voltage-dividing resistor, the other end of the second voltage-dividing resistor is the output end of the pre-charging control module, and the other end of the third voltage-dividing resistor is the power supply end of the pre-charging control module;

[0017] The controlled end of the second electronic switch tube is electrically connected to one end of the fourth voltage-dividing resistor, and the other end of the fourth voltage-dividing resistor is the controlled end of the pre-charging control module;

[0018] The output end of the second electronic switch tube is grounded;

[0019] The second electronic switch tube is turned on when the first pulse width modulation signal is connected through the fourth voltage-dividing resistor, and controls the pre-charging module to start, so as to pre-charge the filter capacitor;

[0020] The second electronic switch tube is turned off when the second pulse width modulation signal is connected through the fourth voltage-dividing resistor, and controls the pre-charging module to be turned off.

[0021] In one embodiment, the LED driving circuit further includes a second driving power module and a wireless communication module;

[0022] The power input terminal of the second driving power module is connected to the first power supply, and the power output terminal of the second driving power module outputs the second power supply;

[0023] The wireless communication module is communicatively connected to the soft switch or the hard switch, and the output end of the wireless communication module is electrically connected to the controlled end of the first driving power module and the controlled end of the pre-charging controlled module.

[0024] In one embodiment, the second driving power module is a DC-to-DC driving chip.

[0025] In one embodiment, the wireless communication module is a WiFi module, a Bluetooth module or an RF module.

[0026] In one embodiment, the LED driving circuit further includes a rectifier module;

[0027] The power input end of the rectifier module is connected to an AC power supply or a DC power supply, and the power output end of the rectifier module outputs the first power supply.

[0028] In one embodiment, the rectifier module is a rectifier bridge or an AC to DC driver chip.

[0029] A second aspect of an embodiment of the present invention provides an LED driving circuit, comprising:

[0030] The above-mentioned capacitor pre-charging circuit, the first driving power supply module, the discharge resistor and the filter capacitor;

[0031] Alternatively, the above-mentioned capacitor pre-charging circuit and the first driving power module, the discharge resistor, the filter capacitor, the second driving power module and the wireless communication module;

[0032] Alternatively, the above-mentioned capacitor pre-charging circuit and the first driving power supply module, the discharge resistor, the filter capacitor, the second driving power supply module, the wireless communication module and the rectifier module.

[0033] A third aspect of an embodiment of the present invention provides an LED device, comprising:

[0034] The above-mentioned LED driving circuit; and

[0035] LED module.

[0036] The embodiment of the present invention provides a capacitor pre-charging circuit applied to an LED driving circuit. When the LED is off, the filter capacitor of the LED driving circuit is pre-charged by the capacitor pre-charging circuit, which can effectively shorten the charging time of the filter capacitor when the LED is lit and accelerate the lighting of the LED; when the LED is lit, the capacitor pre-charging circuit is controlled to stop pre-charging the filter capacitor, which can effectively avoid interfering with the normal operation of the LED. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 is a structural schematic diagram of a capacitor pre-charging circuit provided by an embodiment of the present invention;

[0039] Figure 2 is a circuit schematic diagram of a capacitor pre-charging circuit provided in an embodiment of the present invention;

[0040] Figure 3 is a schematic structural diagram of an LED driving circuit provided by an embodiment of the present invention;

[0041] Figure 4 is a circuit schematic diagram of an LED driving circuit provided by an embodiment of the present invention;

[0042] Figure 5 4 is a circuit diagram of an LED device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are embodiments of a part of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0044] The term "comprising" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method or system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices. In addition, the terms "first", "second" and "third" are used to distinguish different objects, rather than to describe a specific order.

[0045] like Figure 1 As shown, this embodiment provides a capacitor pre-charging circuit 10, which is applied to an LED driving circuit 20. The LED driving circuit 20 includes a first driving power module 21, a discharge resistor R1 and a filter capacitor C. The capacitor pre-charging circuit 10 includes a pre-charging module 11 and a pre-charging control module 12.

[0046] In applications, the capacitor pre-charging circuit can be part of the LED driving circuit, or can be an additional functional circuit independent of the LED driving circuit. The capacitor pre-charging circuit and the LED driving circuit can be integrated together on the same circuit board, which can be a printed circuit board (PCB).

[0047] In application, the resistance value of the discharge resistor and the capacity of the filter capacitor can be set according to actual needs. The capacity of the filter capacitor is usually above 10uF of uf level, that is, between 10uF and 1F. The filter capacitor can be an electrolytic capacitor.

[0048] like Figure 1 As shown, in this embodiment, the connection relationship between the components in the capacitor pre-charging circuit 10 and the LED driving circuit 20 is as follows:

[0049] The power input end of the first driving power module 21 is connected to the first power supply; the current output end of the first driving power module 21 is electrically connected to one end of the discharge resistor R, the positive electrode of the filter capacitor C and the current input end of the LED module 30; the current output end of the first driving power module 21 is electrically connected to the other end of the discharge resistor R1, the negative electrode of the filter capacitor C, the current output end of the LED module 30 and the output end of the pre-charging module 11; the controlled end of the first driving power module 21 and the controlled end of the pre-charging control module 12 are connected to the soft switch communication, or the driving voltage module 21 has a memory function, and the controlled end of the driving voltage module 21 and the controlled end of the pre-charging control module 12 are connected to the hard switch communication;

[0050] The controlled end of the pre-charging module 11 is electrically connected to the output end of the pre-charging control module 12; and the power supply end of the pre-charging control module 12 is connected to the second power supply.

[0051] In application, the first power supply and the second power supply are both DC power supplies, and the first driving power supply module converts the current of the first power supply into the operating current range of the LED module. The voltage of the second power supply is within the operating voltage range of the capacitor pre-charging circuit. The first driving power supply module has a memory function, which means that when the first driving power supply module drives the LED module to light up and then turns off and drives the LED module to light up again, it still drives the LED module with the output current that drove the LED module to light up the last time, so that the brightness displayed by the LED module is the same when it is lit up twice. The first driving power supply module can be implemented by a DC-DC driver chip.

[0052] In applications, the on / off process of soft switching is to reduce the current or voltage to zero first, and then slowly increase the voltage or current to the off-state value, and the loss of the on / off operation is approximately zero; the on / off process of hard switching is that the current rises and the voltage drops at the same time when the switch is turned on; the voltage rises and the current drops at the same time when the switch is turned off.

[0053] In application, electrical connection refers to a physical connection achieved through cables, signal lines, data lines, etc. for transmitting current signals, voltage signals, pulse signals, electrical carrier signals, etc.; communication connection refers to a physical or wireless connection achieved through wired communication or wireless communication; among them, the wired communication method can be an electrical connection, and the wireless communication method can be a wireless connection achieved through a WiFi module, Bluetooth module, RF module, ZigBee module, etc.

[0054] The working principle of the capacitor pre-charging circuit provided in this embodiment is:

[0055] When the soft switch or hard switch outputs the first pulse width modulation signal; the first driving power supply module 21 drives the LED module 30 to turn off according to the first pulse width modulation signal; the pre-charging control module 12 controls the pre-charging module 11 to start according to the first pulse width modulation signal to pre-charge the filter capacitor C;

[0056] When the soft switch or hard switch outputs the second pulse width modulation signal, the first driving power module 21 drives the LED module 30 to light up according to the second pulse width modulation signal, and the pre-charging control module 12 controls the pre-charging module 11 to close according to the second pulse width modulation signal.

[0057] In the application, the first pulse width modulation signal is used to control the first driving power module to adjust the brightness of the LED module to 0, that is, to drive the LED module to turn off. The first pulse width modulation signal is also used to control the start of the pre-charging module through the pre-charging control module to pre-charge the filter capacitor C; the second pulse width modulation signal is used to control the first driving power module to drive the LED module to light up, and the duty cycle of the second pulse width modulation signal determines the brightness of the driven LED. The second pulse width modulation signal is also used to control the pre-charging module to shut down through the pre-charging control module to stop pre-charging the filter capacitor C to avoid interfering with the normal working state of the LED module.

[0058] like Figure 2 As shown, in this embodiment, the pre-charging module 11 in the capacitor pre-charging circuit 10 includes a first voltage-dividing resistor R2 and a first electronic switch tube Q1, and the pre-charging control module 12 includes a second electronic switch tube Q2, a second voltage-dividing resistor R3, a third voltage-dividing resistor R4 and a fourth voltage-dividing resistor R5.

[0059] In application, the first to fourth voltage-dividing resistors can be selected according to actual needs as long as they can meet corresponding functional requirements. The first electronic switch tube and the second electronic switch tube can be selected according to actual needs, for example, transistors such as triodes and field effect tubes.

[0060] In this embodiment, the first electronic switch tube is a field effect tube, and the second electronic switch tube is a triode.

[0061] like Figure 2 As shown, in this embodiment, the connection relationship of each electronic device in the capacitor pre-charging circuit 10 is as follows:

[0062] One end of the first voltage-dividing resistor R2 is the output end of the pre-charging module 11, and the other end of the first voltage-dividing resistor R2 is electrically connected to the output end of the first electronic switch tube Q1;

[0063] The controlled end of the first electronic switch tube Q1 is the controlled end of the pre-charging module 11, and the input end of the first electronic switch tube Q1 is grounded;

[0064] The input end of the second electronic switch tube Q2 is electrically connected to one end of the second voltage-dividing resistor R3 and the third voltage-dividing resistor R4, the other end of the second voltage-dividing resistor R3 is the output end of the pre-charging control module 12, and the other end of the third voltage-dividing resistor R4 is the power supply end of the pre-charging control module 12;

[0065] The controlled end of the second electronic switch tube Q2 is electrically connected to one end of the fourth voltage-dividing resistor R5, and the other end of the fourth voltage-dividing resistor R5 is the controlled end of the pre-charging control module 12;

[0066] The output end of the second electronic switch tube Q2 is grounded.

[0067] The working principle of the capacitor pre-charging circuit provided in this embodiment is:

[0068] The pre-charging control module 12 controls the first electronic switch tube Q1 to be turned on according to the first pulse width modulation signal, and pre-charges the filter capacitor C through the first electronic switch tube Q1 and the first voltage-dividing resistor R2;

[0069] The pre-charging control module 12 controls the first electronic switch tube Q1 to turn off according to the second pulse width modulation signal;

[0070] The second electronic switch tube Q2 is turned on when the first pulse width modulation signal is connected through the fourth voltage-dividing resistor R5, and controls the pre-charging module 11 to start, so as to pre-charge the filter capacitor C;

[0071] The second electronic switch tube Q2 is turned off when the second pulse width modulation signal is connected through the fourth voltage-dividing resistor R5, and controls the pre-charging module 11 to be turned off.

[0072] In application, when the controlled end of the second electronic switch is connected to the first pulse width modulation signal through the fourth voltage-dividing resistor, the second electronic switch is turned on, so that the first electronic switch tube is turned on, and the current charges the filter capacitor through the second voltage-dividing resistor and the first voltage-dividing resistor, so that the filter capacitor is pre-charged; when the controlled end of the second electronic switch is connected to the second pulse width modulation signal through the fourth voltage-dividing resistor, the second electronic switch is turned off, so that the first electronic switch tube is turned off.

[0073] like Figure 3 As shown, in this embodiment, the LED driving circuit 20 further includes a second driving power module 22 , a wireless communication module 23 and a rectifier module 24 .

[0074] In application, the rectifier module converts the AC power supply or DC power supply into a DC power supply, i.e., the first power supply. The AC power supply can be a mains AC power supply. The second drive power supply module converts the voltage of the first power supply into the operating voltage range of the wireless communication module and the pre-charge control module, i.e., converts the first power supply into the second power supply. The rectifier module can be implemented by a rectifier bridge or an AC to DC drive chip, the first drive power supply module can be implemented by a DC to DC drive chip, and the wireless communication module can be implemented by a WiFi module, a Bluetooth module, an RF module, or a ZigBee module.

[0075] like Figure 3 As shown, in this embodiment, the connection relationship of the components in the LED driving circuit 20 is as follows:

[0076] The power input terminal of the second driving power module 22 is connected to the first power supply, and the power output terminal of the second driving power module 22 outputs the second power supply;

[0077] The wireless communication module 23 is connected to the soft switch or the hard switch for communication, and the output end of the wireless communication module 23 is electrically connected to the controlled end of the first driving power module 21 and the controlled end of the pre-charging controlled module 12;

[0078] The power input end of the rectifier module 24 is connected to an AC power source or a DC power source, and the power output end of the rectifier module 24 outputs a first power source.

[0079] Figure 4 The rectifier module 24 is exemplarily shown as a rectifier bridge and the power source connected thereto is a commercial AC power source (including a live wire N and a neutral wire L). The live wire access terminal N of the rectifier bridge is electrically connected to the live wire N through a fuse resistor RF.

[0080] In application, when the LED driving circuit includes a wireless communication module, the LED driving circuit can be used as an Internet of Things device to communicate with wireless communication devices such as mobile phones, tablet computers, remote controls, smart bracelets, wireless routers connected to personal computer clients or (cloud) servers, which have wireless communication functions and use the same wireless communication method as the LED driving circuit. In this way, the working state of the LED module can be wirelessly controlled through these wireless communication devices, and remote control of the LED module can also be achieved.

[0081] like Figure 5 As shown, this embodiment further provides an LED device, including a capacitor pre-charging circuit 10, an LED driving circuit 20 and an LED module.

[0082] In application, the LED module may include one or more LEDs. When the LED module includes more than one LED, the more than one LEDs can be electrically connected in series end to end and then electrically connected to the filter capacitor in parallel. The more than one LED can also be electrically connected to the filter capacitor in parallel, or can be electrically connected to the filter capacitor in a mixed series-parallel manner. The specific settings can be made according to actual needs.

[0083] Figure 5 The LED module 30 is exemplarily shown as comprising more than one LED electrically connected in series end to end.

[0084] In applications, LED devices can be LED lighting lamps, LED traffic lights, LED decorative lights, LED warning lights and other lamps, and can also be applied to other types of products according to actual needs.

[0085] This embodiment provides a capacitor pre-charging circuit applied to an LED driving circuit. When the LED is off, the filter capacitor of the LED driving circuit is pre-charged by the capacitor pre-charging circuit, which can effectively shorten the charging time of the filter capacitor when the LED is lit and accelerate the lighting of the LED; when the LED is lit, the capacitor pre-charging circuit is controlled to stop pre-charging the filter capacitor, which can effectively avoid interfering with the normal operation of the LED.

[0086] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A capacitor pre-charging circuit, characterized in that: Applied to an LED driving circuit, the LED driving circuit includes a first driving power module, a discharge resistor and a filter capacitor, the capacitor pre-charging circuit includes a pre-charging module and a pre-charging control module, and the capacity of the filter capacitor is between 10uF and 1F; The power input end of the first driving power module is connected to the first power supply; the current output end of the first driving power module is electrically connected to one end of the discharge resistor, the positive electrode of the filter capacitor and the current input end of the LED module; The current output end of the first driving power module is electrically connected to the other end of the discharge resistor, the negative electrode of the filter capacitor, the current output end of the LED module and the output end of the pre-charging module; the controlled end of the first driving power module and the controlled end of the pre-charging control module are connected to the soft switch for communication, or the first driving power module has a memory function, and the controlled end of the first driving power module and the controlled end of the pre-charging control module are connected to the hard switch for communication; The controlled end of the pre-charging module is electrically connected to the output end of the pre-charging control module; the power supply end of the pre-charging control module is connected to a second power supply; When the soft switch or the hard switch outputs a first pulse width modulation signal; the first driving power supply module drives the LED module to turn off according to the first pulse width modulation signal; The pre-charging control module controls the pre-charging module to start according to the first pulse width modulation signal to pre-charge the filter capacitor; When the soft switch or the hard switch outputs a second pulse width modulation signal; the first driving power supply module drives the LED module to light up according to the second pulse width modulation signal; the pre-charging control module controls the pre-charging module to close according to the second pulse width modulation signal; The pre-charging module includes a first voltage-dividing resistor and a first electronic switch tube; One end of the first voltage-dividing resistor is the output end of the pre-charging module, and the other end of the first voltage-dividing resistor is electrically connected to the output end of the first electronic switch tube; The controlled end of the first electronic switch tube is the controlled end of the pre-charging module, and the input end of the first electronic switch tube is grounded; The pre-charging control module controls the first electronic switch tube to be turned on according to the first pulse width modulation signal, and pre-charges the filter capacitor through the first electronic switch tube and the first voltage divider resistor; The pre-charging control module controls the first electronic switch tube to turn off according to the second pulse width modulation signal; The pre-charging control module includes a second electronic switch tube, a second voltage-dividing resistor, a third voltage-dividing resistor and a fourth voltage-dividing resistor; The input end of the second electronic switch tube is electrically connected to one end of the second voltage-dividing resistor and the third voltage-dividing resistor, the other end of the second voltage-dividing resistor is the output end of the pre-charging control module, and the other end of the third voltage-dividing resistor is the power supply end of the pre-charging control module; The controlled end of the second electronic switch tube is electrically connected to one end of the fourth voltage-dividing resistor, and the other end of the fourth voltage-dividing resistor is the controlled end of the pre-charging control module; The output end of the second electronic switch tube is grounded; The second electronic switch tube is turned on when the first pulse width modulation signal is connected through the fourth voltage-dividing resistor, and controls the pre-charging module to start, so as to pre-charge the filter capacitor; The second electronic switch tube is turned off when the second pulse width modulation signal is connected through the fourth voltage-dividing resistor, and controls the pre-charging module to be turned off.

2. The capacitor pre-charging circuit according to claim 1, wherein: The LED driving circuit also includes a second driving power supply module and a wireless communication module; The power input terminal of the second driving power module is connected to the first power supply, and the power output terminal of the second driving power module outputs the second power supply; The wireless communication module is communicatively connected to the soft switch or the hard switch, and the output end of the wireless communication module is electrically connected to the controlled end of the first driving power module and the controlled end of the pre-charging control module.

3. The capacitor pre-charging circuit according to claim 2, wherein: The second driving power module is a DC-to-DC driving chip.

4. The capacitor pre-charging circuit according to claim 2, wherein: The wireless communication module is a WiFi module, a Bluetooth module or an RF module.

5. The capacitor pre-charging circuit according to claim 2, wherein: The LED driving circuit also includes a rectifier module; The power input end of the rectifier module is connected to an AC power supply or a DC power supply, and the power output end of the rectifier module outputs the first power supply.

6. The capacitor pre-charging circuit according to claim 5, characterized in that: The rectifier module is a rectifier bridge or an AC to DC drive chip.

7. An LED driving circuit, characterized in that: include: The capacitor pre-charging circuit according to any one of claims 1 to 6, and the first driving power supply module, the discharge resistor and the filter capacitor; Alternatively, the capacitor pre-charging circuit as claimed in claim 2 or 3, and the first driving power module, the discharge resistor, the filter capacitor, the second driving power module and the wireless communication module; Alternatively, the capacitor pre-charging circuit as claimed in claim 5 and the first driving power module, the discharge resistor, the filter capacitor, the second driving power module, the wireless communication module and the rectifier module.

8. An LED device, characterized in that: include: The LED driving circuit as claimed in claim 7; as well as LED module.

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