CN205356734U - Light -emitting diode (LED) lighting equipment - Google Patents
Light -emitting diode (LED) lighting equipment Download PDFInfo
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- CN205356734U CN205356734U CN201521055352.3U CN201521055352U CN205356734U CN 205356734 U CN205356734 U CN 205356734U CN 201521055352 U CN201521055352 U CN 201521055352U CN 205356734 U CN205356734 U CN 205356734U
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Abstract
The utility model discloses a lighting apparatus, it includes base, vaulting pole, lamp shade, LED drive circuit and LED load, and wherein the vaulting pole has the elasticity, and the LED load sets up at the top of vaulting pole, and LED drive circuit includes commercial power, rectification filter circuit, drive circuit, output circuit and feedback circuit, its characterized in that still includes the regulating circuit, and it connects between rectification filter circuit and drive circuit, the stroboscopic problem of LED that causes in the time of can eliminating rectification filter circuit and drive circuit lug connection through the regulating circuit.
Description
Technical field
This utility model relates to lighting field, particularly relates to a kind of LED illumination device.
Background technology
Development along with science and technology, LED is as new type light source, there is the advantages such as volume is little, power consumption is low, light efficiency height, life-span length, environmental protection, it is widely used in lighting field, consequently also occur in that LED drive circuit miscellaneous, in actual applications, different LED drive circuits is adopted all luminous efficiency and life-span will to be produced impact.
At present in numerous modes driving LED, some employing current rectifying and wave filtering circuits and LED drive circuit are directly connected to realize the high efficiency drive of LED, but its exist LED load flicker, fragile, have the defects such as stronger High-frequency Interference, bring inconvenience to user.In the application, LED drive circuit needs to eliminate as much as the stroboscopic problem caused when LED drives.
Utility model content
In order to solve the problems referred to above, this utility model purpose is in that to provide the LED illumination device of a kind of stroboscopic problem that can eliminate and cause when LED drives.
This utility model provides a kind of LED illumination device, including lamp socket, strut, lampshade, LED drive circuit and LED load, wherein strut has retractility, LED load is arranged on the top of strut, LED drive circuit includes civil power, current rectifying and wave filtering circuit, drive circuit, output circuit and feedback circuit, characterized by further comprising adjustment circuit, it is connected between current rectifying and wave filtering circuit and drive circuit, wherein current rectifying and wave filtering circuit includes varistor R1, inductance L1, inductance L2, resistance R2, resistance R3, electric capacity C1, rectification circuit, one end of inductance L1, one end of inductance L2 connects the live wire L and zero line N of civil power (1) respectively, the other end of inductance L1, the input of another termination rectification circuit of inductance L2, resistance R2 and resistance R3 is connected to inductance L1 and the two ends of inductance L2 respectively.
Further, above-mentioned rectification circuit is full bridge rectifier.
Further, drive circuit includes inductance L3, diode D2, Zener diode D3, diode D4, Zener diode D5, diode D6, diode D7, transformator T, audion Q3, metal-oxide-semiconductor Q4, driving chip U1, the wherein positive output end of a termination rectification circuit of inductance L3, the other end is through diode D4, resistance R14 is followed by the voltage input end VCC of driving chip U1, the other end of inductance L3 is through the armature winding of transformator T, diode D7 is followed by the outfan DRV of driving chip U1, resistance R8 and resistance R9 connects and is followed by between the other end and the colelctor electrode of audion Q3 of inductance L3, the colelctor electrode of audion Q3 is adjusted circuit and is followed by the negative output terminal of current rectifying and wave filtering circuit, the junction point of resistance R8 and resistance R9 connects the positive pole of diode D2 and the base stage of audion Q3, the other end of diode D2 connects the emitting stage of audion Q3 respectively, one end of electric capacity C2, one end of resistance R10, the colelctor electrode of another termination audion Q3 of electric capacity C2, the grid of another termination metal-oxide-semiconductor Q4 of resistance R10, the source electrode of metal-oxide-semiconductor Q4 connects the colelctor electrode of audion Q3, the drain electrode of metal-oxide-semiconductor Q4 is followed by the colelctor electrode of audion Q3 through resistance R11, the anode of Zener diode D5 connects the other end of inductance L3, the negative electrode of Zener diode D5 connects the negative electrode of diode D6, the anode of diode D6 is followed by the outfan DRV of driving chip U1 through diode D7, described driving chip U1 includes field effect transistor, wherein the drain electrode of field effect transistor is as the output of driving chip U1, the source electrode of field effect transistor connects the drain electrode of metal-oxide-semiconductor Q4.
Further, output circuit includes Zener diode D8, electric capacity C6 and resistance R15, and the anode of Zener diode D8 connects the anode of transformator T secondary windings, and the negative electrode of Zener diode D8 is followed by the negative terminal of transformator T secondary windings through LED strip.
Further, feedback circuit includes diode D9, inductance L4, three terminal regulator TL431, photoelectrical coupler OC, the anode of diode D9 connects the auxiliary winding anode of transformator T, the negative electrode of diode D9 is through inductance L4, resistance R18, resistance R19 is followed by the anode of three terminal regulator TL431, the junction point of reference pole connecting resistance R18 and the R19 of three terminal regulator TL431, the negative electrode of three terminal regulator TL431 is connected through the negative electrode of resistance R17 with diode D9, in photoelectrical coupler OC, the anode of transmitting tube connects the negative electrode of diode D9 through resistance R16, the negative electrode of transmitting tube connects the negative electrode of three terminal regulator TL431, in photoelectrical coupler OC, the colelctor electrode of phototriode meets the feedback end FB of driving chip U1, in photoelectrical coupler OC, the emitter stage of phototriode connects field effect transistor source electrode in driving chip U1.
Further, regulate circuit and include metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6, audion Q2, wherein the drain electrode of metal-oxide-semiconductor Q1 connects the positive output end of rectification circuit, the source electrode of metal-oxide-semiconductor Q1 is followed by the positive output end negative output terminal of rectification circuit through resistance R4, the positive output end of the one termination rectification circuit of resistance R5, the grid of another termination metal-oxide-semiconductor Q1 of resistance R5 and the colelctor electrode of audion Q2, the emitting stage of audion Q2 connects the negative output terminal of rectification circuit, the base stage of audion Q2 is through resistance R6, resistance R7 is followed by the negative output terminal of rectification circuit, stabilivolt D1 is connected between grid and the negative output terminal of rectification circuit of metal-oxide-semiconductor Q1, resistance R6, the junction point of resistance R7 is connected with audion Q3 colelctor electrode in drive circuit.
This utility model regulates circuit by increasing between current rectifying and wave filtering circuit and drive circuit so that output voltage and current stabilization, thus eliminating the stroboscopic caused when LED drives.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is a kind of circuit structure diagram of this utility model drive circuit.
Detailed description of the invention
Accompanying drawing will be referred and synthesized below and describe this utility model in conjunction with the embodiments in detail.
The present embodiment provides a kind of LED illumination device, and including lamp socket, strut, lampshade, LED drive circuit and LED load, wherein strut has retractility, and LED load is arranged on the top of strut.
As it is shown in figure 1, LED drive circuit includes civil power 1, current rectifying and wave filtering circuit 2, drive circuit 3, output circuit 4 and feedback circuit 5, it is characterised in that also including regulating circuit 6, it is connected between current rectifying and wave filtering circuit 2 and drive circuit 3.
Fig. 2 illustrates the detailed circuit structure of this utility model LED drive circuit, particularly as follows:
Current rectifying and wave filtering circuit 2 includes varistor R1, inductance L1, inductance L2, resistance R2, resistance R3, electric capacity C1, rectification circuit, one end of inductance L1, inductance L2 one end connect the live wire L and zero line N of civil power 1 respectively, the other end of inductance L1, inductance L2 another termination rectification circuit input, resistance R2 and resistance R3 is connected to inductance L1 and the two ends of inductance L2 respectively, and rectification circuit is full bridge rectifier.
Regulate circuit 6 and include metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6, audion Q2, wherein the drain electrode of metal-oxide-semiconductor Q1 connects the positive output end of rectification circuit, the source electrode of metal-oxide-semiconductor Q1 is followed by the positive output end negative output terminal of rectification circuit through resistance R4, the positive output end of the one termination rectification circuit of resistance R5, the grid of another termination metal-oxide-semiconductor Q1 of resistance R5 and the colelctor electrode of audion Q2, the emitting stage of audion Q2 connects the negative output terminal of rectification circuit, the base stage of audion Q2 is through resistance R6, resistance R7 is followed by the negative output terminal of rectification circuit, stabilivolt D1 is connected between grid and the negative output terminal of rectification circuit of metal-oxide-semiconductor Q1, resistance R6, the junction point of resistance R7 is connected with audion Q3 colelctor electrode in drive circuit 3.
Drive circuit 3 includes inductance L3, diode D2, Zener diode D3, diode D4, Zener diode D5, diode D6, diode D7, transformator T, audion Q3, metal-oxide-semiconductor Q4, driving chip U1, the wherein positive output end of a termination rectification circuit of inductance L3, the other end is through diode D4, resistance R14 is followed by the voltage input end VCC of driving chip U1, the other end of inductance L3 is through the armature winding of transformator T, diode D7 is followed by the outfan DRV of driving chip U1, resistance R8 and resistance R9 connects and is followed by between the other end and the colelctor electrode of audion Q3 of inductance L3, the colelctor electrode of audion Q3 is adjusted circuit 6 and is followed by the negative output terminal of current rectifying and wave filtering circuit 2, the junction point of resistance R8 and resistance R9 connects the positive pole of diode D2 and the base stage of audion Q3, the other end of diode D2 connects the emitting stage of audion Q3 respectively, one end of electric capacity C2, one end of resistance R10, the colelctor electrode of another termination audion Q3 of electric capacity C2, the grid of another termination metal-oxide-semiconductor Q4 of resistance R10, the source electrode of metal-oxide-semiconductor Q4 connects the colelctor electrode of audion Q3, the drain electrode of metal-oxide-semiconductor Q4 is followed by the colelctor electrode of audion Q3 through resistance R11, the anode of Zener diode D5 connects the other end of inductance L3, the negative electrode of Zener diode D5 connects the negative electrode of diode D6, the anode of diode D6 is followed by the outfan DRV of driving chip U1 through diode D7, described driving chip U1 includes field effect transistor, wherein the drain electrode of field effect transistor is as the output of driving chip U1, the source electrode of field effect transistor connects the drain electrode of metal-oxide-semiconductor Q4.
Output circuit 4 includes Zener diode D8, electric capacity C6 and resistance R15, and the anode of Zener diode D8 connects the anode of transformator T secondary windings, and the negative electrode of Zener diode D8 is followed by the negative terminal of transformator T secondary windings through LED strip.
Feedback circuit 5 includes diode D9, inductance L4, three terminal regulator TL431, photoelectrical coupler OC, the anode of diode D9 connects the auxiliary winding anode of transformator T, the negative electrode of diode D9 is through inductance L4, resistance R18, resistance R19 is followed by the anode of three terminal regulator TL431, the junction point of reference pole connecting resistance R18 and the R19 of three terminal regulator TL431, the negative electrode of three terminal regulator TL431 is connected through the negative electrode of resistance R17 with diode D9, in photoelectrical coupler OC, the anode of transmitting tube connects the negative electrode of diode D9 through resistance R16, the negative electrode of transmitting tube connects the negative electrode of three terminal regulator TL431, in photoelectrical coupler OC, the colelctor electrode of phototriode meets the feedback end FB of driving chip U1, in photoelectrical coupler OC, the emitter stage of phototriode connects field effect transistor source electrode in driving chip U1.
Circuit 6 is regulated owing to increasing between current rectifying and wave filtering circuit 2 and drive circuit 3; regulate circuit 6 and sense output voltage by resistance R6; thus controlling conducting and the shutoff of audion Q2; the conducting of audion Q2 and the conducting and the shutoff that turn off and then control metal-oxide-semiconductor Q1; by the conducting of metal-oxide-semiconductor and the output turned off to regulate circuit, metal-oxide-semiconductor Q1 is shielded by Zener diode R4.The increase regulating circuit 6 can eliminate the LED load stroboscopic problem caused when current rectifying and wave filtering circuit 2 is directly connected to drive circuit 3.
The foregoing is only preferred embodiment of the present utility model; it is not limited to this utility model; to those skilled in the art; this utility model can have various modifications and variations; all within spirit of the present utility model and principle, the amendment made should be included within protection domain of the present utility model.
Claims (7)
1. a LED illumination device, it is characterized in that: include lamp socket, strut, lampshade, LED drive circuit and LED load, wherein strut has retractility, LED load is arranged on the top of strut, LED drive circuit includes civil power (1), current rectifying and wave filtering circuit (2), drive circuit (3), output circuit (4) and feedback circuit (5), also include regulating circuit (6), it is connected between current rectifying and wave filtering circuit (2) and drive circuit (3), wherein current rectifying and wave filtering circuit (2) includes varistor R1, inductance L1, inductance L2, resistance R2, resistance R3, electric capacity C1, rectification circuit, one end of inductance L1, one end of inductance L2 connects the live wire L and zero line N of civil power (1) respectively, the other end of inductance L1, the input of another termination rectification circuit of inductance L2, resistance R2 and resistance R3 is connected to inductance L1 and the two ends of inductance L2 respectively.
2. a kind of LED illumination device according to claim 1, it is characterised in that the rectification circuit in described current rectifying and wave filtering circuit (2) is full bridge rectifier.
3. a kind of LED illumination device according to claim 1, it is characterized in that, described drive circuit (3) includes inductance L3, diode D2, Zener diode D3, diode D4, Zener diode D5, diode D6, diode D7, transformator T, audion Q3, metal-oxide-semiconductor Q4, driving chip U1, the wherein positive output end of a termination rectification circuit of inductance L3, the other end is through diode D4, resistance R14 is followed by the voltage input end VCC of driving chip U1, the other end of inductance L3 is through the armature winding of transformator T, diode D7 is followed by the outfan DRV of driving chip U1, resistance R8 and resistance R9 connects and is followed by between the other end and the colelctor electrode of audion Q3 of inductance L3, the colelctor electrode of audion Q3 is adjusted circuit (6) and is followed by the negative output terminal of current rectifying and wave filtering circuit (2), the junction point of resistance R8 and resistance R9 connects the positive pole of diode D2 and the base stage of audion Q3, the other end of diode D2 connects the emitting stage of audion Q3 respectively, one end of electric capacity C2, one end of resistance R10, the colelctor electrode of another termination audion Q3 of electric capacity C2, the grid of another termination metal-oxide-semiconductor Q4 of resistance R10, the source electrode of metal-oxide-semiconductor Q4 connects the colelctor electrode of audion Q3, the drain electrode of metal-oxide-semiconductor Q4 is followed by the colelctor electrode of audion Q3 through resistance R11, the anode of Zener diode D5 connects the other end of inductance L3, the negative electrode of Zener diode D5 connects the negative electrode of diode D6, the anode of diode D6 is followed by the outfan DRV of driving chip U1 through diode D7.
4. a kind of LED illumination device according to claim 3, it is characterised in that: described driving chip U1 includes field effect transistor, and wherein the drain electrode of field effect transistor is as the output of driving chip U1, and the source electrode of field effect transistor connects the drain electrode of metal-oxide-semiconductor Q4.
5. according to a kind of LED illumination device one of Claims 1-4 Suo Shu, it is characterized in that, described output circuit (4) includes Zener diode D8, electric capacity C6 and resistance R15, the anode of Zener diode D8 connects the anode of transformator T secondary windings, and the negative electrode of Zener diode D8 is followed by the negative terminal of transformator T secondary windings through LED strip.
6. a kind of LED illumination device according to claim 5, it is characterized in that, described feedback circuit (5) includes diode D9, inductance L4, three terminal regulator TL431, photoelectrical coupler OC, the anode of diode D9 connects the auxiliary winding anode of transformator T, the negative electrode of diode D9 is through inductance L4, resistance R18, resistance R19 is followed by the anode of three terminal regulator TL431, the junction point of reference pole connecting resistance R18 and the R19 of three terminal regulator TL431, the negative electrode of three terminal regulator TL431 is connected through the negative electrode of resistance R17 with diode D9, in photoelectrical coupler OC, the anode of transmitting tube connects the negative electrode of diode D9 through resistance R16, the negative electrode of transmitting tube connects the negative electrode of three terminal regulator TL431, in photoelectrical coupler OC, the colelctor electrode of phototriode meets the feedback end FB of driving chip U1, in photoelectrical coupler OC, the emitter stage of phototriode connects field effect transistor source electrode in driving chip U1.
7. a kind of LED illumination device according to claim 3, it is characterized in that, described adjustment circuit (6) includes metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6, audion Q2, wherein the drain electrode of metal-oxide-semiconductor Q1 connects the positive output end of rectification circuit, the source electrode of metal-oxide-semiconductor Q1 is followed by the positive output end negative output terminal of rectification circuit through resistance R4, the positive output end of the one termination rectification circuit of resistance R5, the grid of another termination metal-oxide-semiconductor Q1 of resistance R5 and the colelctor electrode of audion Q2, the emitting stage of audion Q2 connects the negative output terminal of rectification circuit, the base stage of audion Q2 is through resistance R6, resistance R7 is followed by the negative output terminal of rectification circuit, stabilivolt D1 is connected between grid and the negative output terminal of rectification circuit of metal-oxide-semiconductor Q1, resistance R6, the junction point of resistance R7 is connected with audion Q3 colelctor electrode in drive circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521055352.3U CN205356734U (en) | 2015-12-17 | 2015-12-17 | Light -emitting diode (LED) lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521055352.3U CN205356734U (en) | 2015-12-17 | 2015-12-17 | Light -emitting diode (LED) lighting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN205356734U true CN205356734U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521055352.3U Withdrawn - After Issue CN205356734U (en) | 2015-12-17 | 2015-12-17 | Light -emitting diode (LED) lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205356734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578641A (en) * | 2015-12-17 | 2016-05-11 | 盐城工学院 | LED light fixture |
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2015
- 2015-12-17 CN CN201521055352.3U patent/CN205356734U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578641A (en) * | 2015-12-17 | 2016-05-11 | 盐城工学院 | LED light fixture |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20170901 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20170901 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |