CN208891094U

CN208891094U - A kind of LED lamp driving power

Info

Publication number: CN208891094U
Application number: CN201821082348.XU
Authority: CN
Inventors: 黄超; 黄剑忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-10
Filing date: 2018-07-10
Publication date: 2019-05-21
Anticipated expiration: 2028-07-10

Abstract

A kind of LED lamp driving power.Increase control device between input alternating current firewire and an ac input end of current rectifying and wave filtering circuit, the control device can turn on and off route between alternating current firewire and an ac input end of current rectifying and wave filtering circuit, light is thoroughly closed after realizing the closing light order for receiving external mobile phone or remote controler, external LED lamp bead provides safety, saves electric energy, extends the service life without low-light phenomenon.

Description

A kind of LED lamp driving power

Technical field

The utility model relates to a kind of LED lamp driving power, more specifically to one kind for LED lamp it is non-every From constant-current dimming darkening driving power.

Background technique

It is as shown in Figure 1: the circuit of the non-isolated constant-current dimming darkening driving power of current LED in left side overstriking rectangular box Structure, including input alternating current firewire, alternating current zero curve, current rectifying and wave filtering circuit 1, MCU power supply circuit 2, the part MCU 3, constant current driving portion Points 4, being output to output cathode line 5, output negative pole line 7 and the driving power of external light source board 6, publicly GND etc. is formed. It by the external alternating current of the driving power, first passes around current rectifying and wave filtering circuit 1 and obtains high voltage direct current, which powers electric to MCU 2 input terminal of road provides electric power, and MCU power supply circuit 2 provides low pressure stabilized power supply (generally to the part MCU 3 by its output end 5V), which supports MCU work；The high voltage direct current also provides power supply to constant current drive part 4, also by output Electrode line 5 is connected to the LED lamp bead anode of external light source board 6, and LED lamp bead cathode passes through output negative pole line 7 and the internal electricity of driving Feel L and forms major loop back to constant current drive part 4.The part MCU 3 receives the control of mobile phone or remote controler outside driving power Constant current drive part 4 is controlled after system instruction, constant current drive part 4, which does corresponding light modulation darkening or closing etc. according to the instruction, to be controlled System, makes exterior light source plate 6 do sync response.

The existing non-isolated constant-current dimming darkening driving power of LED lamp has the following problems:

1, external light source is closed by external mobile phone or remote controler, although constant current drive part 4 does not have output, not The connection of light source board 6 and alternating current firewire is cut off, alternating current firewire generates weak current to the earth 8 by LED lamp bead, and LED lamp bead is in Existing glimmer phenomenon, cannot thoroughly shut LED lamp；

2, external light source is closed by external mobile phone or remote controler, although constant current drive part 4 does not have output, not The connection for cutting off light source board 6 and alternating current firewire, can bring security risk；

3, current rectifying and wave filtering circuit 1, constant current drive part 4 belong to high-power electronic device, although by external mobile phone or Remote controler closes external light source, this two parts is also consuming a part of electric energy；In addition, this two parts circuit is chronically at energization shape State reduces the electronic product service life.

Summary of the invention

In order to overcome the non-isolated constant-current dimming darkening driving power of existing LED lamp that cannot thoroughly shut lamps and lanterns and subtract Few driving power is to external security risk and extends the driving power service life, and the utility model provides a kind of LED lamp driving Power supply can cut off the connection of alternating current firewire and light source board, make light source board not after the driving power receives closing lamps and lanterns instruction Again glimmer, prevent the internal most of circuit of security risk, driving and stop working, stand-by power consumption reduction.

The technical scheme adopted by the utility model to solve the technical problem is as follows: construction includes existing driving power portion Point, as shown in Figure 2, it is characterised in that: A on the route of alternating current firewire and an ac input end of current rectifying and wave filtering circuit 1, A control device 9 is inserted between B two o'clock；Other parts are altogether in GND inside the control device 9 and driving power；The control One GPIO mouthfuls of device 9 and the part MCU 3 are connected to F point；The output end of the control device 9 and MCU power supply circuit 2 is connected to E Point；The input terminal of the control device 9 and MCU power supply circuit 2 is connected to D point；It include on-off circuit and letter inside the control device 9 Easy power supply circuit；

The input terminal of the MCU power supply circuit 2 of Fig. 1 is detached from the high voltage direct current that current rectifying and wave filtering circuit 1 provides；

The control device 9 turns on and off A, B two o'clock after receiving the instruction that the part MCU 3 issues, and works as shutdown Afterwards, the later current rectifying and wave filtering circuit 1 of B point does not work, and in order to maintain MCU to work, is powered by 9 embedded simple of control device Circuit provides electric power to the input terminal of MCU power supply circuit 2；

The simple power supply circuit includes that the anode of a rectifier diode 31 is connected to A point；The cathode of diode 31 D point is connected to the input terminal of 32 anode of electrolytic capacitor and MCU power supply circuit 2；32 cathode of electrolytic capacitor and driving power Internal other parts are altogether in GND；

The on-off circuit includes that MT1, MT2 foot of bidirectional triode thyristor 21 are connect with A, B point respectively；Trigger foot G and one The output end of a photoelectrical coupler 23 connects；The another output of photoelectrical coupler 23 connects after concatenating the first current-limiting resistance 22 In B point；Photoelectrical coupler internal diode anode and 2 output end of MCU power supply circuit are connected to E point, and diode cathode passes through the One GPIO mouthfuls of two current-limiting resistances 24 and the part MCU 3 are connected to F point.

Another situation of the on-off circuit is: the normally opened contact both ends of relay 25 are connect with A, B point respectively； Coil one end of the relay and 2 output end of MCU power supply circuit are connected to E point, the collection of the coil other end and a triode 26 Electrode is connected；The base stage of the triode is connected to F point, transmitting by one GPIO mouthfuls of third current-limiting resistance 27 and the part MCU 3 Other parts are altogether in GND inside pole and driving power；

This driving power working principle is:

After accessing alternating current, mentioned by the simple power supply inside the control device to the input terminal of MCU power pack 2 For electric power, then stable low-tension supply is provided from MCU power supply circuit 2 to the part MCU 3, guarantee the non-stop run of the part MCU；

When the part MCU 3 receive close light instruction after, corresponding F point be low level or high level, make relay disconnect or Bidirectional triode thyristor disconnect, A, B two o'clock it is separated, late-class circuit does not work, and exterior light source plate does not shine；

Conversely, corresponding F point is high level or low level, makes relay after the part MCU 3 receives and opens light instruction It is attracted or bidirectional triode thyristor is connected, make to connect between A, B two o'clock, guarantee that rectification circuit 1 and constant current drive part 4 work normally, Exterior light source plate shines.

The beneficial effects of the utility model are:

Close light using external mobile phone or remote controler, the current potential of the F point of the part MCU 3 do corresponding variation, it is described after Electric appliance disconnects or silicon-controlled shutdown, the firewire of alternating current are thoroughly cut off with light source board, and lamps and lanterns can be prevented there is no low-light phenomenon, again Personnel accidentally touch lamps and lanterns and electric shock phenomenon occur, and provide safety, additionally it is possible to the power supply of high-power components has been cut off, driving power Standby power reduction.

Detailed description of the invention

Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:

It is the circuit structure diagram of the non-isolated constant-current dimming darkening driving power of existing LED in the left side Fig. 1 overstriking box；

It is the circuit structure of the utility model LED lamp driving power embodiment 1, embodiment 2 in the left side Fig. 2 overstriking box Figure；

Fig. 3 is the on-off circuit circuit diagram of the control device 9 of the utility model LED lamp driving power embodiment 1；

Fig. 4 is the on-off circuit circuit diagram of the control device 9 of the utility model LED lamp driving power embodiment 2；

Fig. 5 is the simple power supply electricity of the control device 9 of the utility model LED lamp driving power embodiment 1, embodiment 2 Road circuit diagram；

Fig. 6 is bidirectional triode thyristor, photoelectrical coupler pin schematic diagram.

Specific embodiment

Embodiment 1:

It is the circuit structure diagram of the utility model LED lamp driving power embodiment 1 in the left side Fig. 2 overstriking box, Fig. 3 is The on-off circuit circuit diagram of the control device 9 of embodiment 1.As shown in Fig. 2, construction includes existing driving power part, by city A, B point between electrical fire line and filter circuit 1 disconnects, and concatenates a control device 9 in the two o'clock, the control device 9 with it is described The E point of 2 output end of MCU power supply circuit be connected, be connected with GPIO mouthfuls of F points for the part MCU 3；

In Fig. 3: MT1, MT2 foot of a bidirectional triode thyristor 21 are connect with A, B point respectively；One photoelectrical coupler 23 The output end of internal bilateral diode is connect with silicon-controlled 21 control electrode G and a resistance 22 respectively, the other end of resistance 22 It is connect with B point, the internal diode anode of photoelectrical coupler 23 is connect with E point, cathode is connect with a resistance 24, resistance 24 The other end is connect with F point.The present embodiment 1 controls photoelectrical coupler, photoelectric coupling when F point is low level using pull-down pattern Device and bidirectional triode thyristor conducting, conversely, the two is closed；Main devices select: photoelectric coupler output end need to be bilateral diode, The bidirectional triode thyristors such as such as MOC3063, silicon-controlled use BT136；24 resistance value of resistance is defeated according to E point voltage and photoelectrical coupler Enter to hold diode drive current and forward conduction voltage to be calculated, such as: diode drop is generally 1.2V or so, drives Streaming current is 6mA, and E point voltage is 5V, resistance value=(5-1.2)/6 kilo-ohm of resistance 24.

Embodiment 2:

It is the circuit structure diagram of the utility model LED lamp driving power embodiment 2 in the left side Fig. 2 overstriking box, Fig. 4 is The on-off circuit circuit diagram of the control device 9 of embodiment 2.As shown in Fig. 2, construction includes existing driving power part, by city A, B point between electrical fire line and filter circuit 1 disconnects, and concatenates a control device 9 in the two o'clock, the control device 9 with it is described The E point of 2 output end of MCU power supply circuit be connected, be connected with GPIO mouthfuls of F points for the part MCU 3；

In Fig. 4: the normally opened contact of a relay 25 is connect with A, B point respectively；Coil one end of relay 25 and E point Be connected, the coil other end is connected with the collector of a triode 26, the transistor emitter with it is public inside driving power Ground GND is connected, and base stage is connected with a current-limiting resistance 27, and 27 other end of resistance is connected with F point, relay when F point is high level 25 conductings, when low level, turn off；27 resistance value of resistance is determining according to the base current Ib that triode saturation conduction need to provide, such as: E Point voltage is 5V, resistance value=(5-0.7)/Ib.

Fig. 5 is the simple power supply electricity of the control device 9 of the utility model LED lamp driving power embodiment 1, embodiment 2 Road circuit diagram connects A point with 31 anode of diode, and cathode connects the anode of an electrolytic capacitor 32, the cathode of capacitor 32 and drive Publicly GND's dynamic power supply is connected；Diode is greater than 500V using 1N4007 M7 pressure resistance and electric current is not more than the diode of 1A, Electrolytic capacitor capacity is 1 ~ 2.2 uf, and pressure resistance is greater than 400V.

Fig. 6 is the photoelectrical coupler and bidirectional triode thyristor pipe used in the utility model LED lamp driving power embodiment 1 Foot figure.

Claims

1. a kind of LED lamp driving power, it is characterised in that: exchanged at one of alternating current firewire and current rectifying and wave filtering circuit (1) defeated Enter one control device (9) of insertion between A, B two o'clock on the route at end；The control device (9) and driving power inside are other Part is altogether in GND；The control device (9) and the part MCU one GPIO mouthfuls of (3) are connected to F point；The control device (9) with The output end of MCU power supply circuit (2) is connected to E point；The control device (9) and the input terminal of MCU power supply circuit (2) are connected to D Point；It include on-off circuit and simple power supply circuit inside the control device (9).

2. a kind of LED lamp driving power according to claim 1, it is characterised in that: the on-off circuit includes double It is connect respectively with A, B point to MT1, MT2 foot of silicon-controlled (21)；The output end for triggering foot G and a photoelectrical coupler (23) connects It connects；B point is connected to after the another output concatenation the first current-limiting resistance (22) of photoelectrical coupler (23)；Inside photoelectrical coupler Diode cathode and MCU power supply circuit (2) output end are connected to E point, and diode cathode passes through the second current-limiting resistance (24) and MCU Partially GPIO mouthfuls of one of (3) is connected to F point.

3. a kind of LED lamp driving power according to claim 1, it is characterised in that: the on-off circuit include after The normally opened contact both ends of electric appliance (25) are connect with A, B point respectively；Coil one end and MCU power supply circuit (2) of the relay export End is connected to E point, and the coil other end is connected with the collector of a triode (26)；The base stage of the triode passes through third current limliting Resistance (27) and the part MCU one GPIO mouthful of (3) be connected to F point, emitter and driving power inside other parts altogether in GND。

4. a kind of LED lamp driving power according to claim 1, it is characterised in that: the simple power supply circuit packet Anode containing a rectifier diode (31) is connected to A point；The cathode of diode (31) and electrolytic capacitor (32) anode and The input terminal of MCU power supply circuit (2) is connected to D point；Inside electrolytic capacitor (32) cathode and driving power other parts altogether in GND。