CN203289704U - Sectional type LED (Light-Emitting Diode) lamp capable of light modulation and free of external light modulator - Google Patents
Sectional type LED (Light-Emitting Diode) lamp capable of light modulation and free of external light modulator Download PDFInfo
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- CN203289704U CN203289704U CN2013202822529U CN201320282252U CN203289704U CN 203289704 U CN203289704 U CN 203289704U CN 2013202822529 U CN2013202822529 U CN 2013202822529U CN 201320282252 U CN201320282252 U CN 201320282252U CN 203289704 U CN203289704 U CN 203289704U
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Abstract
The utility model discloses a sectional type LED lamp capable of light modulation and free of an external light modulator. The LED lamp comprises a bulb structure, and a light modulation circuit is fixedly arranged in the bulb structure; the light modulation structure comprises a rectifier bridge and an LED lamp control output circuit, wherein the rectifier bridge is connected with commercial ac via a power switch, and the LED lamp control output circuit is connected with dc output of the rectifier bridge; and the LED lamp control output circuit comprises a high-frequency transformer, a pulse generator and a sectional control circuit capable of light modulation, wherein the high-frequency transformer is composed of a primary coil, a secondary coil and a magnetic core, and the pulse generator drives oscillation of the primary coil; and the primary coil provides power for driving light emission of LED's, and the secondary coil provides dc power for the pulse generator capable of pulse width modulation and the sectional control circuit capable of light modulation via a rectification circuit. According to the utility model, circuit structure is simple, windings in the high-frequency transformer is fewer, light modulation function of the lamp is realized while light modulators are not increased, light modulation via a switch is completely realized, the cost is reduced, and circuit reliability is increased.
Description
Technical field
The utility model belongs to lighting technical field, particularly the adjustable light modulation of a kind of segmented LED without external dimmer.
Background technology
Light modulation product needed in the market coordinates dimmer, and dimmer need to drive than heavy load usually, and expensive; Simultaneously the LED electricity-saving lamp usually can not light modulation,, so a lot of LED light fixture only has switch, there is no dimming function; Along with promoting the use of of LED light fixture, in the situation that do not increase expenditure, people more need a kind of LED light fixture that has easily dimming function.
Summary of the invention
The purpose of this utility model is in order to realize that the LED light fixture has dimming function and don't uses dimmer, the adjustable light modulation technical scheme of a kind of segmented LED without external dimmer of proposition.
To achieve these goals, the technical solution of the utility model is:
The adjustable light modulation of a kind of segmented LED without external dimmer, comprise: the socket that can dock with lamp socket, described socket is connected with adapter sleeve one end of a sealing, port at the adapter sleeve other end is fixedly installed the LED pipe, a transparent lamp shade is connected with the port of the adapter sleeve other end and fastens the LED pipe, arranges and is fixed with light adjusting circuit in described adapter sleeve; Described light adjusting circuit comprises a rectifier bridge that is connected with city's alternating current through socket and lamp socket by mains switch, and a LED lamp that is connected with the output of rectifier bridge direct current is controlled output circuit; Wherein, described LED lamp is controlled output circuit and is comprised: a high frequency transformer that is comprised of primary winding, secondary coil and magnetic core, pulse generator and a segmentation dimming control circuit that drives the primary winding vibration; The luminous power supply that provides of driving LED pipe is provided primary winding, and secondary coil provides DC power supply by rectification circuit for turnable pulse width pulse generator and segmentation dimming control circuit;
One end of described primary winding connects rectifier bridge direct current positive output end and as the negative pole link of LED pipe, the other end of primary winding connects the positive pole of a rectifier diode, and the negative pole of rectifier diode is as the anode connection terminal of LED pipe;
Described turnable pulse width pulse generator drives primary winding and does the energy storage vibration, and it is luminous that primary winding discharges energy storage driving LED pipe by described rectifier diode;
described turnable pulse width pulse generator comprises a fixed rate pulse generator circuit and a N channel power field effect transistor switch pipe, the drain electrode of power field effect switching tube connects the other end of described primary winding and the positive pole of described rectifier diode, the source electrode of power field effect switching tube connects rectifier bridge direct current negative output terminal by the first resistance, described pulse-generator circuit has a pulse-width adjustment control end of realizing pulse-width adjustment by potential change, described pulse-width adjustment control end connects the source electrode of power field effect switching tube, the pulse output of described fixed rate pulse generator circuit connects the grid of power field effect switching tube, described pulse-generator circuit is by changing the control voltage of power field effect switching tube grid and source electrode, and then the pulsewidth that changes the power field effect switching tube is exported,
Described segmentation dimming control circuit comprises that one can be carried out microprocessor that sectional dimming controls, power switch detection circuit and variable electric potential circuit, described power switch detection circuit includes a photoelectrical coupler, the luminous tube of photoelectrical coupler connects city's alternating current by described mains switch, and the switching-on and switching-off state signal that the DC signal output of photoelectrical coupler connects microprocessor receives input; Described variable electric potential circuit comprises at least two N channel field-effect switching tubes, be called the first field effect transistor switch pipe and the second field effect transistor switch pipe, described the first field effect transistor switch pipe be connected field effect transistor switch pipe drain electrode and connect respectively an end of the second resistance and the 3rd resistance, the second resistance and the other end parallel connection of the 3rd resistance connect the source electrode of described power field effect switching tube afterwards, and two field effect transistor switch tube grids connect the power transformation position control end of microprocessors.
further, described segmented LED dimming control circuit also comprises that a startup power supply provides circuit, described startup power supply provides circuit to comprise the divider resistance of two series connection, one end of the divider resistance of series connection connects described rectifier bridge direct current positive output end, the other end of divider resistance connects the power input of described fixed rate pulse generator circuit, in the middle of the divider resistance of described two series connection, the power supply of serial connection o'clock by a diode connecting secondary coil provides end, serial connection point in the middle of the negative pole of described diode connects, the power supply of the anodal connecting secondary coil of diode provides end.
Further, described fixed rate pulse generator circuit is that model is the PWM generator controller of FAN103.
Further, described microprocessor is connected with an energy storage discharge loop, described energy storage discharge loop guarantees after described mains switch is cut off the electricity supply that continuing to keep microprocessor worked for 2 seconds at least, described energy storage discharge loop comprises electrochemical capacitor and diode, the negative pole of diode and the feeder ear that is connected to microprocessor after the positive pole of electrochemical capacitor is connected, the direct current supply output of the anodal connecting secondary coil of diode.
Further, described electrochemical capacitor is the electrochemical capacitor of 2200 microfarads at least.
Described adapter sleeve is insulating sleeve of electric, overlaps an insulation protective jacket in insulating case again, and described light adjusting circuit is fixed in described insulation protective jacket, and the LED pipe is welded and fixed in the circuit board, and wiring board is fixed on insulation protection and puts.
The utility model compared with prior art has following advantage: the utility model circuit structure is simple, has both realized the dimming function of light fixture, does not increase again dimmer, realized the switch dimming technology fully, the high frequency transformer winding is few, has reduced cost, has increased the reliability of circuit.
Below in conjunction with drawings and Examples, the utility model being done one describes in detail.
Description of drawings
Fig. 1 is the utility model light adjusting circuit schematic diagram;
Fig. 2 is the utility model modulated structure decomposing schematic representation;
Fig. 3 is the utility model lamp overall structure cutaway view;
Fig. 4 is the utility model lamp schematic appearance.
Embodiment
Embodiment:
the adjustable light modulation of a kind of segmented LED without external dimmer, referring to Fig. 1 to Fig. 4, the adjustable light modulation of described LED comprises, the socket 16 that can dock with lamp socket, described socket is connected with adapter sleeve 17 1 ends of a sealing, described adapter sleeve is insulating sleeve of electric, for safety, overlap again an insulation protective jacket 18 in insulating case, port at the adapter sleeve other end is fixedly installed LED pipe 19, the LED pipe is weldingly fixed on wiring board 20, wiring board is fixed on insulation protection and puts, a transparent lamp shade 21 is connected with the port of the adapter sleeve other end and fastens LED manages, arrange and be fixed with light adjusting circuit in described insulating case, described light adjusting circuit comprises that is connected the LED lamps control output circuit that 2, one of rectifier bridges that mains switch 1 is connected with city's alternating current through socket and lamp socket are connected with the output of rectifier bridge direct current with lamp socket through socket by mains switch, wherein, described LED lamp control output circuit comprises: 3, one pulse generator and the segmentation dimming control circuits that drive the primary windings vibration of high frequency transformer that are comprised of primary winding 3-1, secondary coil 3-2 and magnetic core, the luminous power supply that provides of driving LED pipe is provided primary winding, and secondary coil provides DC power supply by rectification circuit for turnable pulse width pulse generator and segmentation dimming control circuit, in the present embodiment, secondary coil provides power supply by diode 11 rectifications for the turnable pulse width pulse generator, provides power supply through direct current 5V of direct current regulation circuit circuit 15 outputs for the segmentation dimming control circuit by another diode 14 rectifications simultaneously,
One end of described primary winding connects rectifier bridge direct current positive output end and as the negative pole link of LED pipe, the other end of primary winding connects the positive pole of a rectifier diode 4, and the negative pole of rectifier diode is as the anode connection terminal of LED pipe pipe;
Described turnable pulse width pulse generator drives primary winding and does the energy storage vibration, and it is luminous that primary winding discharges energy storage driving LED pipe by described rectifier diode;
The present embodiment utilizes the principle primary winding of solenoid energy storage discharge for the luminous power supply that provides of LED pipe, and is both simple, saved again the coil winding of high frequency transformer.
described turnable pulse width pulse generator comprises a fixed rate pulse generator circuit 5 and a N channel power field effect transistor switch pipe 6, the drain electrode of power field effect switching tube connects the other end of described primary winding and the positive pole of described rectifier diode, the source electrode of power field effect switching tube connects rectifier bridge direct current negative output terminal by the first resistance R 1, described fixed rate pulse generator circuit has a pulse-width adjustment control end CS who realizes pulse-width adjustment by potential change, described pulse-width adjustment control end connects the source electrode of power field effect switching tube, the pulse output GATE of described fixed rate pulse generator circuit connects the grid of power field effect switching tube, described pulse-generator circuit is by changing the control voltage of power field effect switching tube grid and source electrode, under the constant condition of incoming frequency, and then the pulsewidth that changes the power field effect switching tube is exported, the fixed frequency that the present embodiment fixed rate pulse generator circuit produces is 50kHz,
Described segmentation dimming control circuit comprises that one can be carried out microprocessor 7 that sectional dimming controls, power switch detection circuit and variable electric potential circuit, described power switch detection circuit includes a photoelectrical coupler 8, the luminous tube of photoelectrical coupler connects city's alternating current by described mains switch, and the switching-on and switching-off state signal that the DC signal output of photoelectrical coupler connects microprocessor receives input; Described variable electric potential circuit comprises at least two N channel field-effect switching tubes, be called the first field effect transistor switch pipe 9 and the second field effect transistor switch pipe 10, described the first field effect transistor switch pipe be connected field effect transistor switch pipe drain electrode and connect respectively an end of the second resistance R 2 and the 3rd resistance R 3, the second resistance and the other end parallel connection of the 3rd resistance connect the source electrode of described power field effect switching tube afterwards, and two field effect transistor switch tube grids connect the power transformation position control end of microprocessors.
in embodiment, described segmented LED dimming control circuit also comprises that a startup power supply provides circuit, divider resistance R4 and R5 that described startup power supply provides circuit to comprise two series connection, one end of the divider resistance of series connection connects described rectifier bridge direct current positive output end, the other end of divider resistance connects the power input VDD of described fixed rate pulse generator circuit, in the middle of the divider resistance of described two series connection, the power supply of serial connection o'clock by diode 11 connecting secondary coils provides end, serial connection point in the middle of the negative pole of described diode connects, the power supply of the anodal connecting secondary coil of diode provides end.
In embodiment, described fixed rate pulse generator circuit is that model is the PWM generator controller (PWM-PSR) of FAN103.
In embodiment, for microprocessor after cutting off the electricity supply still can keep current on off state within the regular hour, and then by this state, control the variable electric potential circuit; Therefore, described microprocessor is connected with an energy storage discharge loop, described energy storage discharge loop guarantees after described mains switch is cut off the electricity supply that continuing to keep microprocessor worked for 2 seconds at least, described energy storage discharge loop comprises electrochemical capacitor 12 and diode 13, the negative pole of diode and the feeder ear that is connected to microprocessor after the positive pole of electrochemical capacitor is connected, the direct current supply output of the anodal connecting secondary coil of diode; What the described diode of the present embodiment used is the Schottky diode of model as BAT54C, is mainly that effect is to prevent electric capacity recoil discharge.
In embodiment, described electrochemical capacitor is the electrochemical capacitor of 2200 microfarads at least.
It is below the light-dimming method of desk lamp with dimmer switch, wherein said energy storage discharge loop guarantees after described mains switch is cut off the electricity supply that continuing to keep microprocessor worked for 2 seconds at least, operation is controlled mains switch and is connected, disconnects, connects, and its time that disconnects, connects is less than 2 seconds; Be provided with mains switch time number register in microprocessor, described light-dimming method step is:
A. when mains switch is connected for the first time, two same potential signals of microprocessor output are to the switch control end of the first electronic switch and the second electronic switch, the pulse-width adjustment control end of fixed rate pulse generator circuit obtains the first electric potential signal, fixed rate pulse generator circuit output the first pulse width signal, LED manages luminous first brightness of sending; Referring to Fig. 1, resistance R 1, R2, R3 or all-in resistance in parallel diminish at this moment, or R2, R3 disconnect, and only has R1 access all-in resistance this moment the highest, when 6 conducting of power field effect switching tube according to the control of Electric potentials of all-in resistance the ON time of power field effect switching tube;
B. when mains switch is connected for the second time, two different potentials signals of microprocessor output are to the switch control end of the first electronic switch and the second electronic switch, the pulse-width adjustment control end of fixed rate pulse generator circuit obtains the second electric potential signal, fixed rate pulse generator circuit output the second pulse width signal, LED manages luminous second brightness of sending; With step a in like manner, this moment resistance R 2 or the another kind of all-in resistance of R3 formation in parallel with R1, when 6 conducting of power field effect switching tube according to the control of Electric potentials of all-in resistance another ON time of power field effect switching tube;
C. when mains switch is connected for the third time, two same potential of microprocessor output and with the electric potential signal of the step a signal inversion switch control end to the first electronic switch and the second electronic switch, the pulse-width adjustment control end of fixed rate pulse generator circuit obtains the 3rd electric potential signal, fixed rate pulse generator circuit output the second pulse width signal, LED manages luminous the 3rd brightness of sending; The all-in resistance of resistance R 1, R2, R3 composition is just in time opposite with the all-in resistance variation that step a is at this moment, and step a all-in resistance is minimum, and the all-in resistance of step c is maximum, otherwise perhaps; When 6 conducting of power field effect switching tube according to the control of Electric potentials of all-in resistance another ON time of power field effect switching tube;
E. when mains switch was connected for the 4th time, step a was returned in mains switch time number register set.
Above-described embodiment is the step of three-stage dimming, if after carrying out four times, five times more times, connect time several resistance parallel with one another according to number of times, and carry out the judgement of described number of times and export the various combination signal of described number of times, obtain the all-in resistance of various combination parallel connection, and then realize the light modulation of described number of times.
Claims (6)
1. adjustable light modulation of the segmented LED without external dimmer, comprise: the socket that can dock with lamp socket, described socket is connected with adapter sleeve one end of a sealing, port at the adapter sleeve other end is fixedly installed the LED pipe, a transparent lamp shade is connected with the port of the adapter sleeve other end and fastens the LED pipe, arranges and is fixed with light adjusting circuit in described adapter sleeve; Described light adjusting circuit comprises that is connected the rectifier bridge that mains switch is connected with city's alternating current through socket and lamp socket with lamp socket through socket by mains switch, and a LED lamp that is connected with the output of rectifier bridge direct current is controlled output circuit; It is characterized in that, described LED lamp is controlled output circuit and is comprised: a high frequency transformer that is comprised of primary winding, secondary coil and magnetic core, pulse generator and a segmentation dimming control circuit that drives the primary winding vibration; The luminous power supply that provides of driving LED pipe is provided primary winding, and secondary coil provides DC power supply by rectification circuit for turnable pulse width pulse generator and segmentation dimming control circuit;
One end of described primary winding connects rectifier bridge direct current positive output end and as the negative pole link of LED pipe, the other end of primary winding connects the positive pole of a rectifier diode, and the negative pole of rectifier diode is as the anode connection terminal of LED pipe;
Described turnable pulse width pulse generator drives primary winding and does the energy storage vibration, and it is luminous that primary winding discharges energy storage driving LED pipe by described rectifier diode;
described turnable pulse width pulse generator comprises a fixed rate pulse generator circuit and a N channel power field effect transistor switch pipe, the drain electrode of power field effect switching tube connects the other end of described primary winding and the positive pole of described rectifier diode, the source electrode of power field effect switching tube connects rectifier bridge direct current negative output terminal by the first resistance, described pulse-generator circuit has a pulse-width adjustment control end of realizing pulse-width adjustment by potential change, described pulse-width adjustment control end connects the source electrode of power field effect switching tube, the pulse output of described fixed rate pulse generator circuit connects the grid of power field effect switching tube, described pulse-generator circuit is by changing the control voltage of power field effect switching tube grid and source electrode, and then the pulsewidth that changes the power field effect switching tube is exported,
Described segmentation dimming control circuit comprises that one can be carried out microprocessor that sectional dimming controls, power switch detection circuit and variable electric potential circuit, described power switch detection circuit includes a photoelectrical coupler, the luminous tube of photoelectrical coupler connects city's alternating current by described mains switch, and the switching-on and switching-off state signal that the DC signal output of photoelectrical coupler connects microprocessor receives input; Described variable electric potential circuit comprises at least two N channel field-effect switching tubes, be called the first field effect transistor switch pipe and the second field effect transistor switch pipe, described the first field effect transistor switch pipe be connected field effect transistor switch pipe drain electrode and connect respectively an end of the second resistance and the 3rd resistance, the second resistance and the other end parallel connection of the 3rd resistance connect the source electrode of described power field effect switching tube afterwards, and two field effect transistor switch tube grids connect the power transformation position control end of microprocessors.
2. the adjustable light modulation of a kind of segmented LED without external dimmer according to claim 1, it is characterized in that, described segmented LED dimming control circuit also comprises that a startup power supply provides circuit, described startup power supply provides circuit to comprise the divider resistance of two series connection, one end of the divider resistance of series connection connects described rectifier bridge direct current positive output end, the other end of divider resistance connects the power input of described fixed rate pulse generator circuit, in the middle of the divider resistance of described two series connection, the power supply of serial connection o'clock by a diode connecting secondary coil provides end, serial connection point in the middle of the negative pole of described diode connects, the power supply of the anodal connecting secondary coil of diode provides end.
3. the adjustable light modulation of a kind of segmented LED without external dimmer according to claim 1, is characterized in that, described fixed rate pulse generator circuit is that model is the PWM generator controller of FAN103.
4. the adjustable light modulation of a kind of segmented LED without external dimmer according to claim 1, it is characterized in that, described microprocessor is connected with an energy storage discharge loop, described energy storage discharge loop guarantees after described mains switch is cut off the electricity supply that continuing to keep microprocessor worked for 2 seconds at least, described energy storage discharge loop comprises electrochemical capacitor and diode, the negative pole of diode and the feeder ear that is connected to microprocessor after the positive pole of electrochemical capacitor is connected, the direct current supply output of the anodal connecting secondary coil of diode.
5. the adjustable light modulation of a kind of segmented LED without external dimmer according to claim 4, is characterized in that, described electrochemical capacitor is the electrochemical capacitor of 2200 microfarads at least.
6. the adjustable light modulation of a kind of segmented LED without external dimmer according to claim 1; it is characterized in that; described adapter sleeve is insulating sleeve of electric; overlap again an insulation protective jacket in insulating case; described light adjusting circuit is fixed in described insulation protective jacket; the LED pipe is welded and fixed in the circuit board, and wiring board is fixed on insulation protection and puts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202822529U CN203289704U (en) | 2013-05-22 | 2013-05-22 | Sectional type LED (Light-Emitting Diode) lamp capable of light modulation and free of external light modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202822529U CN203289704U (en) | 2013-05-22 | 2013-05-22 | Sectional type LED (Light-Emitting Diode) lamp capable of light modulation and free of external light modulator |
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| Publication Number | Publication Date |
|---|---|
| CN203289704U true CN203289704U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202822529U Withdrawn - After Issue CN203289704U (en) | 2013-05-22 | 2013-05-22 | Sectional type LED (Light-Emitting Diode) lamp capable of light modulation and free of external light modulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256509A (en) * | 2013-05-22 | 2013-08-21 | 北京铨富光电科技有限公司 | Sectional type LED dimming lamp without externally arranged dimmer and dimming method thereof |
| CN104378887A (en) * | 2014-11-21 | 2015-02-25 | 成都芯源系统有限公司 | Led drive circuit and control method thereof |
-
2013
- 2013-05-22 CN CN2013202822529U patent/CN203289704U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256509A (en) * | 2013-05-22 | 2013-08-21 | 北京铨富光电科技有限公司 | Sectional type LED dimming lamp without externally arranged dimmer and dimming method thereof |
| CN103256509B (en) * | 2013-05-22 | 2014-10-29 | 北京铨富光电科技有限公司 | Sectional type LED dimming lamp without externally arranged dimmer and dimming method thereof |
| CN104378887A (en) * | 2014-11-21 | 2015-02-25 | 成都芯源系统有限公司 | Led drive circuit and control method thereof |
| CN104378887B (en) * | 2014-11-21 | 2016-11-30 | 成都芯源系统有限公司 | Led drive circuit and control method thereof |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20131113 Effective date of abandoning: 20141029 |
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| RGAV | Abandon patent right to avoid regrant |