CN202979420U - Daylight lamp automatically switchable in brightness grade - Google Patents
Daylight lamp automatically switchable in brightness grade Download PDFInfo
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- CN202979420U CN202979420U CN2012207103861U CN201220710386U CN202979420U CN 202979420 U CN202979420 U CN 202979420U CN 2012207103861 U CN2012207103861 U CN 2012207103861U CN 201220710386 U CN201220710386 U CN 201220710386U CN 202979420 U CN202979420 U CN 202979420U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model relates to a smart lamp, especially to a daylight lamp automatically switchable in brightness grade. The daylight lamp provided by the utility model mainly comprises a lamp holder, an insulating lamp tube, a light source module, a control module and a light source circuit board, wherein the control module comprises an input protection unit, a rectifying unit, a filter unit, a smart control delay unit, a first current-limiting unit and a second current-limiting unit; the input protection unit is connected with the smart control delay unit and the second current-limiting unit, respectively; the smart control delay unit is connected with the first current-limiting unit and the second current-limiting unit, respectively; the first current-limiting unit is connected with the rectifying unit; the rectifying unit is connected with the filter unit; and the filter unit is connected with the light source module. The daylight lamp automatically switchable in brightness grade realizes automatic switching of the brightness grade of the daylight lamp, and simultaneously is simple in realization way, practicable, and low in cost; and the integrated circuit has high stability and the reliability. The daylight lamp automatically switchable in brightness grade is especially for the daylight lamp.
Description
Technical field
The utility model relates to Intelligent lamp, particularly relates to a kind of fluorescent lamp of the brightness degree that automaticallyes switch.
Background technology
In some public places, as corridor, in the illuminator in parking lot, the light fixture that the light-operated or light-operated Based Intelligent Control that combines with human body (or sound) induction is arranged of main use now, such light fixture judges ambient brightness by light control sensor, when the illumination deficiency being detected, the controller opens lamp power is lighted light fixture; The light-operated light fixture that combines with detecting human body (or sound) induction is when light control sensor detects the illumination deficiency, still disconnect electric current, light light fixture, but continue monitoring, until people's process detected or had sound to transmit, controller switches on power and lights light fixture.And in other public places, as in the office lighting system, the light on and off that a switch is controlled the lamp in a zone mostly, but not all personnel are on office location, thereby cause the waste of electric energy, adopt central control system can realize easily the control of single lamp, but need artificial interference, make control inconvenience very.
Use pure light-operated light fixture, only can detect intensity of illumination, neither energy-conservation, also not humane; Use the light-operated light fixture that combines with human body (or sound) induction, although more humane, also relatively energy-conservation, but the effective range of human body (sound) inductor is limited, people or car not near the time, environment is in dark state, is difficult to the illuminating effect that reaches desirable, the sense of discomfort that allows simultaneously the people think that light fixture is lighted suddenly.A kind of lighting commonly used of the conduct of fluorescent lamp, its scope of application is extensive, but also there is no at present a kind of fluorescent lamp that had not only satisfied hommization but also relative energy-saving.
The utility model content
Technical problem to be solved in the utility model, be exactly for existing fluorescent lamp hommization and energy-conservation aspect deficiency, a kind of fluorescent lamp of the brightness degree that automaticallyes switch is proposed.
the utility model solve the technical problem, the technical scheme that adopts is: a kind of fluorescent lamp of the brightness degree that automaticallyes switch, comprise lamp socket, the insulation fluorescent tube, the light source module, control module and light source circuit board, described light source module is connected with control module, described insulation lamp tube ends is nested in lamp socket, described control module comprises the input protection unit, rectification unit and filter unit, it is characterized in that, described light source module and control module all are arranged on light source circuit board, described light source circuit board is arranged in the insulation fluorescent tube, described control module also comprises the Based Intelligent Control delay unit, the first current limliting unit and the second current limliting unit, described input protection unit respectively with the Based Intelligent Control delay unit, the second current limliting unit connection, described Based Intelligent Control delay unit respectively with the first current limliting unit be connected the current limliting unit and be connected, described the first current limliting unit with arrange the unit and be connected, described rectification unit is connected with filter unit, described filter unit is connected with the light source module.
Concrete, described Based Intelligent Control delay unit is that one or more in delay unit are controlled in sound-controlled delay unit, light control time-delay unit and human body infrared induction.
concrete, described Based Intelligent Control delay unit is that the human body infrared induction is controlled delay unit, described human body infrared induction is controlled delay unit and is comprised voltage stabilizing didoe, rectifier diode, the first electrochemical capacitor, the second electrochemical capacitor, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the human body infrared inductor, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first not gate, the second not gate, the 3rd not gate, the 4th not gate, the 5th not gate, the 6th not gate and diode
the positive pole of voltage stabilizing didoe and input protection unit, the negative pole of the first electrochemical capacitor is connected negative pole and is connected with the human body infrared inductor, the negative pole of voltage stabilizing didoe is connected with the positive pole of rectifier diode, the positive pole of the negative pole of rectifier diode and the first electrochemical capacitor, one end of the first resistance connects, the positive pole of the other end of the first resistance and human body infrared inductor, one end of the first electric capacity connects, one end of the other end of the first electric capacity and the second electric capacity, one end of the second resistance be connected the input of not gate and connect, the other end of the second electric capacity, another of the second resistance be connected the output of not gate and be connected with the input of the second not gate, the input of the second not gate is connected with an end of the 3rd electric capacity, the other end of the 3rd electric capacity is connected with an end of the 3rd resistance, the other end of the 3rd resistance is connected with an end of the 4th resistance and the input of the 3rd not gate, the output of the 3rd not gate is connected with the input of the 4th not gate, the output of the 4th not gate is connected with the positive pole of diode, one end of the negative pole of diode and the 5th resistance, the input of the positive pole of the second electrochemical capacitor and the 5th not gate connects, the output of the 5th not gate is connected with an end of the 5th resistance, the other end of the 5th resistance is connected with an end of the 4th electric capacity and the input of the 6th not gate, one end of the output of the 6th not gate and the 5th electric capacity be connected the current limliting unit and be connected, the negative pole of human body infrared inductor, the other end of the 4th resistance, the other end of the 5th resistance, the negative pole of the second electrochemical capacitor, the equal ground connection of the other end of the other end of the 4th electric capacity and the 5th electric capacity.
Concrete, described the first current limliting unit comprises the first resistance, the second resistance and electric capacity, described the first resistance is connected an end and is connected with the Based Intelligent Control delay unit with Capacitance parallel connection, the other end is connected with an end of the second resistance, and the other end of the second resistance is connected with rectification unit with the second current limliting unit.
Concrete; described the second current limliting unit comprises controllable silicon, the first resistance, the second resistance, electric capacity and inductance; described silicon controlled T1 end is connected with protected location, T2 holds is connected with electric capacity with an end of the second resistance that an end is connected, G holds and is connected with an end of the first resistance; the other end of the first resistance is connected with the Based Intelligent Control delay unit; the other end of the second resistance is connected the other end and is connected with an end of inductance with electric capacity, the other end of inductance is connected with rectification unit with the first current limliting unit.
The beneficial effects of the utility model are, realize the automatic switchover of fluorescent lamp brightness degree, make fluorescent lamp have higher hommization and energy-efficient characteristics, and implementation is simple and practical, with low cost simultaneously, and integrated circuit has higher stability and reliability.
Description of drawings
Fig. 1 is the structural representation of fluorescent lamp of the present utility model;
Fig. 2 is the cross-sectional structure schematic diagram of fluorescent lamp of the present utility model;
Fig. 3 is the logical construction block diagram of control module;
Fig. 4 is the circuit theory schematic diagram of the control module of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
The fluorescent lamp of the brightness degree that automaticallyes switch of the present utility model improves fluorescent structure and the control mode of prior art, is specially:
As shown in Figure 1, the fluorescent lamp of a kind of brightness degree that automaticallyes switch shown in the utility model comprises lamp socket and insulation fluorescent tube, and the two ends of the fluorescent tube that wherein insulate are nested in lamp socket.As shown in Figure 2, be the cross sectional representation of fluorescent lamp, light source circuit board is arranged in the insulation fluorescent tube, and light source module and control module are arranged on light source circuit board.The light source module here is the LED light source module.
As shown in Figure 3; control module comprises input protection unit, Based Intelligent Control delay unit, the first current limliting unit, the second current limliting unit, rectification unit and filter unit; the input protection unit is connected with Based Intelligent Control delay unit, the second current limliting unit respectively; the Based Intelligent Control delay unit respectively with the first current limliting unit be connected the current limliting unit and be connected; the first current limliting unit with arrange the unit and be connected; rectification unit is connected with filter unit, and filter unit is connected with the LED light source module.the utility model is realized the technical scheme that the auto brightness grade is switched, main by the Based Intelligent Control delay unit, the first current limliting unit and the second current limliting unit matching realize, be not triggered in the situation that impose a condition, the first current limliting cell operation, with the Current Control of the LED light source module of flowing through more among a small circle, after condition is triggered, start working in the second current limliting unit, with the Current Control of the LED light source module of flowing through in default maximum, make LED light source module full power operation, thereby realize the switching of two brightness degrees, certainly the principle according to this programme can arrange more LED light source module work brightness degree.
A kind of concrete scheme is, described Based Intelligent Control delay unit is that one or more in delay unit are controlled in sound-controlled delay unit, light control time-delay unit and human body infrared induction.
Because this practical new fluorescent tube adopts smart brightness grade handoff technique, LED lamp pearl is actually the operating state that is in a kind of intermittence, has improved the life cycle of light fixture, and utilizes the wiring on lamp pearl pin pad and PCB to realize heat radiation, has cancelled radiator; LED lamp pearl adopts the mode that strengthens electric current to drive simultaneously, has reduced the usage quantity of lamp pearl, has reduced holistic cost.Described LED lamp pearl control device uses current limliting unit adopts capacitance-resistance voltage reduction circuit, comes the size of Limited Current with the capacitive reactance of electric capacity, has avoided the power loss of resistance current limliting; At rectification unit back interpolation inductance and capacitor filtering, improve circuit stability, reduce the current fluctuation of LED light source module, dummy load is set simultaneously, improve circuit reliability; Partly use the high light efficiency LED module in lamp source, energy-efficient; Whether the work that employing is controlled the current limliting unit based on the Based Intelligent Control delay unit of inductor realize the control to the electric current of LED light source module, the function of switching to reach brightness degree; The importation of Based Intelligent Control delay unit is inductor, adopts the RC circuit to make delay circuit, and is simple and practical, with low cost.
Embodiment:
As shown in Figure 4; be a kind of concrete control module circuit theory schematic diagram; protected location is made of fuse 101 and piezo-resistance 102 series connection; fuse 101 1 termination civil power input live wire L ends; the other end connects an end of piezo-resistance 102; while is as an output of protected location; one that is connected to rectification unit exchanges input point; the other end of piezo-resistance connects civil power input zero line N end; while is as another output of protected location; but according to different application, the formation of protected location is not limited to this.
The Based Intelligent Control delay unit is controlled delay unit for the human body infrared induction in the present embodiment, wherein voltage stabilizing didoe 201 anodes connect input protection unit zero line N end, as with reference to ground VSS point, voltage stabilizing didoe 201 other ends connect rectifier diode 202 anodes, simultaneously, as the power stage end points that connects the first current limliting unit 3; The anode of electrochemical capacitor 203 connects the negative terminal that arranges diode 202, and the power supply vdd terminal of delay unit is controlled in induction as human body infrared, and the negative terminal of electrochemical capacitor 203 is connected to reference to ground VSS point; Resistance 204 1 ends connect the VDD point, and the other end is connected to an end of human body infrared inductor 205 as the signal output point, are connected with an end of electric capacity 206, and the other end of human body infrared inductor 205 is connected to reference to ground VSS point; One end of the other end of electric capacity 206, electric capacity 207 and an end of resistance 208 are connected to the input of not gate 213, the other end of the other end of electric capacity 207 and resistance 208 is connected to the output of not gate 213, the input of not gate 214 is connected to the output of not gate 213, the output of not gate 214 connects an end of electric capacity 209, the other end of electric capacity 209 connects clicks and enters an end of 210, the other end of resistance 210 is connected with the input that an end of resistance 219 is connected with not gate, and the other end of resistance 219 is connected to reference to ground VSS point; The output of not gate 215 connects the input of not gate 216, the output of not gate 216 connects the anode of diode 211, the negative terminal of diode 211 is connected with an end of resistance 220, the input that the anode of electrochemical capacitor 221 is connected with not gate, and the other end of resistance 220 and the negative terminal of electrochemical capacitor are connected to reference to ground VSS point; The output of not gate 217 is connected with an end of resistance 212, the other end of resistance 212 is connected with the input that an end of electric capacity 222 is connected with not gate, the output that one end of electric capacity 223 is connected with not gate connects, the other end of the other end of electric capacity 223 and electric capacity 222 is connected to reference to ground VSS point, the output of not gate 218 is controlled the output of delay unit as the human body infrared inductor, output signal is controlled the operating state of the second current limliting unit.
The first current limliting unit is the network of a capacitance-resistance structure, the end that one end of resistance 301 is connected with electric capacity connects, input point as the first current limliting unit, be connected to the human body infrared inductor and control the power stage point of delay unit, the other end that the other end of resistance 301 is connected with electric capacity is connected with an end of resistance 303, and the other end of resistance 303 is connected to another ac input end of rectification unit as the output of the first current limliting unit.
Described the second current limliting unit is the resistance-capacitance network of a belt switch, and the switch that the present embodiment is used is bidirectional triode thyristor, and practical application is not limited to this, can adopt other elements as switching tube.The T1 of controllable silicon 401 end is the input point of the second current limliting unit, be connected to another defeated output of protected location, namely with reference to location VSS, an end of silicon controlled control end G end contact resistance 401, the other end of resistance 401 connect the control output line of human body infrared induction control delay unit; One end of silicon controlled T2 end and resistance 403 is connected to an end of electric capacity 405, the other end that the other end of resistance 403 is connected with electric capacity is connected with an end of inductance 404, and the other end of inductance 404 is connected to another ac input end of rectification unit as the output of the second current limliting unit.
Rectification unit adopts 4 rectifier diodes to build in the present embodiment, and practical application is not limited to this, can adopt rectifier bridge stack, and perhaps circuit of synchronous rectification etc. has the circuit of equal effect.The anode of diode 501 and diode 503 links together as an ac input end of rectification unit; The negative terminal of diode 501 and diode 502 links together as the output plus terminal of rectification unit; The anode of diode 502 and diode 502 links together as another ac input end of rectification unit; The anode of diode 502 and diode 504 links together as the output negative terminal of rectification unit.
Filter unit adopts the lc circuit main body in the present embodiment, practical application is not limited to this, other filter circuits that can adopt RC or have therewith equal effect.One end of resistance 602 is connected to the output plus terminal of rectification unit, resistance 602 other ends are connected to the negative terminal of rectification unit, one end of inductance 601 is connected to the anode of rectification unit, the other end of inductance 601 is connected to the anode of electrochemical capacitor 603, simultaneously, also as the output plus terminal of filter network, the negative terminal of electrochemical capacitor 603 is connected to the negative terminal of rectification unit to the other end of inductance 601.
its operation principle is: when not receiving human infrared signal, the electric current of described LED light source module of flowing through is less, the second current limliting unit is in off-state, only has the first current limliting cell operation, described the first current limliting unit, by electric capacity 302, the resistance-capacitance network step-down that resistance 301 consists of, suppress resistance 303 through current peak, become the larger DC power supply of ripple by rectification unit 5, resistance 602 is a dummy load, provide open-circuit-protection to circuit, DC power supply after rectification is through the LC filter circuit of inductance 601 and electric capacity 603 compositions, the filtering ripple, the direct driving LED light source of DC power supply module after rectifying and wave-filtering, only have this moment the first current limliting unit that electric current is provided, the electric current of LED light source module of flowing through is lower, the LED lamp is in the low-light level state.
when there being the people to enter in the infrared induction zone, the human body infrared inductor produces a low level, through electric capacity 206, the AC portion of signal is coupled to the input of not gate 213, not gate 213, resistance 208 and electric capacity 207 consist of puts a non-gate amplifier, signal amplifies via this amplifier, be delivered to the input of not gate 214 by the output of not gate 213, reverse via not gate 214, output output by not gate 214, through electric capacity 209, resistance 210, not gate 215, not gate 216, by high level with enough width and intensity of not gate 216 outputs, described high level, through diode 211, give the time-delay electrochemical capacitor 221 chargings, discharge resistance 220 is the electrochemical capacitor discharge simultaneously, electrochemical capacitor 221 imports high level into not gate 217, resistance 212 and electric capacity 222 erasure signal noises, prevent from exporting misoperation, signal is again through being still high level after not gate 218, described high level signal drives controllable silicon 402 conductings by resistance 401, the first current limliting unit and the second current limliting unit parallel connection, increased the power supply capacity to load, after rectification unit and filter unit, electric current by the LED light source module reaches default maximum current, LED lamp group is in the full power high brightness level, when the people leaves the infrared induction zone, the signal that imports electric capacity 206 into becomes high level, pass to not gate 206 places, become low level, can not charge to delay capacitor 221,221 discharges of 220 pairs of electrochemical capacitors of resistance, be namely the delay time t=0.9RC that described human body infrared inductor prolongs the unit discharge time, wherein R is the resistance of resistance 220, and C is the appearance value of electric capacity 221.The electric charge of electrochemical capacitor 221 storages is discharged by resistance 220, during lower than the logic low of not gate, namely not gate 217 inputs are low level, through resistance R 2 to electrochemical capacitor voltage, not gate 218, remain low level, controllable silicon 402 disconnects, and replys initial condition, do not work in the second current limliting unit, the first current limliting cell operation is only arranged, and LED light source module electric current recovers initial little current status, and the LED lamp is in the glimmer state.If the somebody in the infrared induction zone, restarts the timing of delaying time before electrochemical capacitor 221 discharges finish, namely realized, the people the zone in the time, lamp is highlighted, when the people leaves the zone, lamp is low bright, if on when not needing to throw light in institute, by the mechanical switch power cutoff.
Claims (5)
1. fluorescent lamp of brightness degree that can automatically switch, comprise lamp socket, the insulation fluorescent tube, the light source module, control module and light source circuit board, described light source module is connected with control module, described insulation lamp tube ends is nested in lamp socket, described control module comprises the input protection unit, rectification unit and filter unit, it is characterized in that, described light source module and control module all are arranged on light source circuit board, described light source circuit board is arranged in the insulation fluorescent tube, described control module also comprises the Based Intelligent Control delay unit, the first current limliting unit and the second current limliting unit, described input protection unit respectively with the Based Intelligent Control delay unit, the second current limliting unit connection, described Based Intelligent Control delay unit respectively with the first current limliting unit be connected the current limliting unit and be connected, described the first current limliting unit with arrange the unit and be connected, described rectification unit is connected with filter unit, described filter unit is connected with the light source module.
2. the fluorescent lamp of a kind of brightness degree that automaticallyes switch according to claim 1, is characterized in that, described Based Intelligent Control delay unit is that one or more in delay unit are controlled in sound-controlled delay unit, light control time-delay unit and human body infrared induction.
3. the fluorescent lamp of a kind of brightness degree that automaticallyes switch according to claim 2, it is characterized in that, described Based Intelligent Control delay unit is that the human body infrared induction is controlled delay unit, described human body infrared induction is controlled delay unit and is comprised voltage stabilizing didoe, rectifier diode, the first electrochemical capacitor, the second electrochemical capacitor, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the human body infrared inductor, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first not gate, the second not gate, the 3rd not gate, the 4th not gate, the 5th not gate, the 6th not gate and diode,
the positive pole of voltage stabilizing didoe and input protection unit, the negative pole of the first electrochemical capacitor is connected negative pole and is connected with the human body infrared inductor, the negative pole of voltage stabilizing didoe is connected with the positive pole of rectifier diode, the positive pole of the negative pole of rectifier diode and the first electrochemical capacitor, one end of the first resistance connects, the positive pole of the other end of the first resistance and human body infrared inductor, one end of the first electric capacity connects, one end of the other end of the first electric capacity and the second electric capacity, one end of the second resistance be connected the input of not gate and connect, the other end of the second electric capacity, another of the second resistance be connected the output of not gate and be connected with the input of the second not gate, the input of the second not gate is connected with an end of the 3rd electric capacity, the other end of the 3rd electric capacity is connected with an end of the 3rd resistance, the other end of the 3rd resistance is connected with an end of the 4th resistance and the input of the 3rd not gate, the output of the 3rd not gate is connected with the input of the 4th not gate, the output of the 4th not gate is connected with the positive pole of diode, one end of the negative pole of diode and the 5th resistance, the input of the positive pole of the second electrochemical capacitor and the 5th not gate connects, the output of the 5th not gate is connected with an end of the 5th resistance, the other end of the 5th resistance is connected with an end of the 4th electric capacity and the input of the 6th not gate, one end of the output of the 6th not gate and the 5th electric capacity be connected the current limliting unit and be connected, the negative pole of human body infrared inductor, the other end of the 4th resistance, the other end of the 5th resistance, the negative pole of the second electrochemical capacitor, the equal ground connection of the other end of the other end of the 4th electric capacity and the 5th electric capacity.
4. the fluorescent lamp of a kind of brightness degree that automaticallyes switch according to claim 1 and 2, it is characterized in that, described the first current limliting unit comprises the first resistance, the second resistance and electric capacity, described the first resistance is connected an end and is connected with the Based Intelligent Control delay unit with Capacitance parallel connection, the other end is connected with an end of the second resistance, and the other end of the second resistance is connected with rectification unit with the second current limliting unit.
5. the fluorescent lamp of a kind of brightness degree that automaticallyes switch according to claim 1 and 2, it is characterized in that, described the second current limliting unit comprises controllable silicon, the first resistance, the second resistance, electric capacity and inductance, described silicon controlled T1 end is connected with protected location, T2 end and an end of the second resistance are connected an end and are connected with electric capacity, the G end is connected with an end of the first resistance, the other end of the first resistance is connected with the Based Intelligent Control delay unit, the other end of the second resistance is connected the other end and is connected with an end of inductance with electric capacity, the other end of inductance is connected with rectification unit with the first current limliting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207103861U CN202979420U (en) | 2012-12-20 | 2012-12-20 | Daylight lamp automatically switchable in brightness grade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207103861U CN202979420U (en) | 2012-12-20 | 2012-12-20 | Daylight lamp automatically switchable in brightness grade |
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| CN202979420U true CN202979420U (en) | 2013-06-05 |
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| CN2012207103861U Expired - Fee Related CN202979420U (en) | 2012-12-20 | 2012-12-20 | Daylight lamp automatically switchable in brightness grade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862658A (en) * | 2018-12-25 | 2019-06-07 | 厦门阳光恩耐照明有限公司 | A kind of LED drive circuit of double mode switching |
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2012
- 2012-12-20 CN CN2012207103861U patent/CN202979420U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862658A (en) * | 2018-12-25 | 2019-06-07 | 厦门阳光恩耐照明有限公司 | A kind of LED drive circuit of double mode switching |
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