CN102843848B - Electronic ballast circuit used for remote control type emergency lamp - Google Patents
Electronic ballast circuit used for remote control type emergency lamp Download PDFInfo
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- CN102843848B CN102843848B CN201110170082.0A CN201110170082A CN102843848B CN 102843848 B CN102843848 B CN 102843848B CN 201110170082 A CN201110170082 A CN 201110170082A CN 102843848 B CN102843848 B CN 102843848B
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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
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Abstract
The invention relates to an electronic ballast circuit used for a remote control type emergency lamp. The electronic ballast circuit comprises a power supply converting circuit, an output stage circuit, a dimming control circuit, a remote control signal receiving circuit and a boosting circuit, wherein the power supply converting circuit is used for converting an alternative current power supply into a direct current power supply; the remote control signal receiving circuit is used for receiving remote control signals and transmitting control instructions to the dimming control circuit after modulating the remote control signals; the dimming control circuit is used for transmitting dimming pulse which corresponds to the transmission frequency and the control instructions to the output stage circuit, and transmitting starting signals to the boosting circuit when the alternative current power supply has no input; the output stage circuit receives the direct current power supply and converts the direct current power supply into the alternative current of which the power is controlled by the dimming pulse so as to provide working electric energy for a fluorescent lamp tube; the boosting circuit performs the boosting processing to the electric energy provided by a battery while receiving the starting signal, and converts the electric energy into the direct current power supply so as to provide the power to the output stage circuit. With the adoption of the electronic ballast circuit, the brightness of a lamp can be adjusted remotely according to the demands of emergency lighting situations, thereby achieving the balance between the lighting brightness and the lighting lasting time requirements.
Description
[technical field]
The present invention relates to electric lighting field, particularly relate to a kind of distance type and to meet an urgent need electronic lamp ballast circuit.
[background technology]
For emergency lighting, mainly contain two large purposes, namely work emergency lighting and life-saving emergency illumination.The feature of operating illumination is that the brightness of requirement is high, as far as possible consistent with brightness before power-off, does not affect the carrying out of work.And life-saving emergency illumination to brightness without too high request, the time, the longer the better, and earthquake, fire etc. such as occur, and lighting hours is longer more helpful for personal security escape.
But for Emergency Lighting Supply, because battery power is limited, brightness is high, then the time is short; The brightness low then time is long.
Traditional emergency fluorescent lamp electric ballast does not all have dimming function, can not regulate according to occasion to brightness.
In addition, even if ballast adds the function by button light modulation, after emergency light and ballast being installed to ceiling or other positions not easily got at, rethink light modulation just very inconvenience.
[summary of the invention]
Based on this, be necessary to provide a kind of distance type with dimming function to meet an urgent need electronic lamp ballast circuit, realize adapting to the needs of different occasion and reaching the object of efficiency utilization finite energy resource.
A kind of distance type is met an urgent need electronic lamp ballast circuit, comprises power-switching circuit, output-stage circuit, adjusting control circuit, remote control signal receiver circuit and booster circuit; Described power-switching circuit is used for AC power to be converted to DC power supply; Described remote control signal receiver circuit for receiving remote signal, and by backward for remote signal demodulation described adjusting control circuit sending controling instruction; Described adjusting control circuit connects described remote control signal receiver circuit, output-stage circuit and booster circuit, for to the described output-stage circuit transmission frequency dimmer pulse corresponding with control command, and detect described AC power and whether have input, send enabling signal without during input to described booster circuit in AC power; Described output-stage circuit connects described power-switching circuit, receives described DC power supply and for fluorescent tube provides work energy after being converted to the alternating current that power controls by described dimmer pulse; Described booster circuit connects described adjusting control circuit and output-stage circuit, and the electric energy for being provided by battery when receiving described enabling signal carries out boosting process, and being converted into DC power supply is that described output-stage circuit is powered.
Preferably, described power-switching circuit comprises the filter circuit, rectification circuit and the circuit of power factor correction that connect in turn.
Preferably, described output-stage circuit comprises: half-bridge inversion circuit, the control input end of described half-bridge inversion circuit connects described adjusting control circuit, the power input of described half-bridge inversion circuit connects circuit of power factor correction, under the driving of described dimmer pulse, the DC power supply inversion that circuit of power factor correction exports is alternating current and is exported; Resonant circuit, the input of described resonant circuit connects the output of described half-bridge inversion circuit, and the output of described resonant circuit connects described fluorescent tube, for being obtained the voltage to described fluorescent tube build-up of luminance by resonance; Abnormity protection circuit; the input of described abnormity protection circuit connects described fluorescent tube; the output of described abnormity protection circuit connects described adjusting control circuit; when the voltage of the input of abnormity protection circuit is higher than setting threshold; by the output of described abnormity protection circuit, guard signal is sent to described adjusting control circuit, control described adjusting control circuit and turn off described dimmer pulse.
Preferably, the quantity of described output-stage circuit is 2.
Preferably, described adjusting control circuit comprises micro-control unit; The command reception pin of described micro-control unit connects the output of described remote control signal receiver circuit, for receiving described control command, first pulse pin of described micro-control unit and the second pulse pin are for exporting described dimmer pulse, and the frequency of described dimmer pulse controls by described control command; First abnormal signal detection pin of described micro-control unit connects the output of the abnormity protection circuit of the first output-stage circuit, the dimmer pulse of described first pulse pin is turned off when described guard signal being detected, second abnormal signal detection pin of described micro-control unit connects the output of the abnormity protection circuit of the second output-stage circuit, turns off the dimmer pulse of described second pulse pin when described guard signal being detected; Whether city's electro-detection pin of described micro-control unit has input for detecting described AC power, and when low level being detected, the booster circuit control pin of described micro-control unit sends enabling signal, and described booster circuit control pin connects described booster circuit.
Preferably, described resonant circuit comprises resonant inductance and the resonant capacitance of series connection mutually, and the inductance value of described resonant inductance is 3.3 millihenries, and the capacitance of described resonant capacitance is 3.3 nano farads; In described control command, the frequency of the dimmer pulse that first grade of instruction is corresponding is 48 KHz, the frequency of the dimmer pulse that described second gear instruction is corresponding is 52 KHz, described third gear instruction corresponding frequency be 56 KHz, the frequency of the dimmer pulse that described fourth speed instruction is corresponding is 60 KHz.
Preferably, described remote control signal receiver circuit comprises receiving demodulation module, the negative pole pin ground connection of described receiving demodulation module and and be connected to filter capacitor between supply pin, the output pin of described receiving demodulation module is the output of remote control signal receiver circuit, the output pin of described receiving demodulation module connects the working power of receiving demodulation module by the first resistance, be connected to the second resistance between one end of described first resistance connection working power and the supply pin of described receiving demodulation module.
Above-mentioned distance type is met an urgent need electronic lamp ballast circuit, receive remote signal by remote control signal receiver circuit and after being demodulated to control command, control the frequency of dimmer pulse, and then control the power that output-stage circuit changes fluorescent tube, need to regulate lamp brightness according to the occasion of emergency lighting, reach the balance of brightness of illumination demand and illumination duration demand, realize effective utilization of battery power, and achieve Remote light modulation.
[accompanying drawing explanation]
Fig. 1 is that in an embodiment, distance type is met an urgent need the circuit block diagram of electronic lamp ballast circuit;
Fig. 2 is that in an embodiment, distance type is met an urgent need the circuit theory diagrams of electronic lamp ballast circuit;
Fig. 3 is the circuit theory diagrams of middle output-stage circuit embodiment illustrated in fig. 2;
Fig. 4 is the circuit theory diagrams of middle power-switching circuit embodiment illustrated in fig. 2 and adjusting control circuit;
Fig. 5 is the circuit theory diagrams of testing circuit in an embodiment;
Fig. 6 is the circuit theory diagrams of middle booster circuit embodiment illustrated in fig. 2;
Fig. 7 is the circuit theory diagrams of middle remote control signal receiver circuit embodiment illustrated in fig. 2.
[embodiment]
For enabling object of the present invention, feature and advantage more become apparent, and are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 is that in an embodiment, distance type is met an urgent need the circuit block diagram of electronic lamp ballast circuit, and distance type electronic lamp ballast circuit 100 of meeting an urgent need comprises power-switching circuit 110, output-stage circuit 40, adjusting control circuit 50, remote control signal receiver circuit 70 and booster circuit 60.
Power-switching circuit 110 is for being converted to DC power supply by AC power.In the present embodiment, power-switching circuit 110 comprises the filter circuit 10, rectification circuit 20 and the circuit of power factor correction 30 that connect in turn.Filter circuit 10 exports to rectification circuit 20 after the alternating current of 220 volts of input is carried out filtering process, rectification process is carried out by rectification circuit 20, the DC power supply exporting 400 volts after power factor correction is carried out again through circuit of power factor correction 30, meet the performance requirement of Electro Magnetic Compatibility (Electro Magnetic Compatibility, EMC) and High Power Factor.In the present embodiment, circuit of power factor correction 30 can adopt model to be power factor correction (PFC) chip (U1 in Fig. 2) of L6562D.Met an urgent need by the distance type ground wire of electronic lamp ballast circuit 100 and the ground wire (E) of civil power of electric capacity CY1 is connected together.
Remote control signal receiver circuit 70 for receiving remote signal, and by after remote signal demodulation to adjusting control circuit 50 sending controling instruction.
Adjusting control circuit 50 connects remote control signal receiver circuit 70, output-stage circuit 40 and booster circuit 60, for to the output-stage circuit 40 transmission frequency dimmer pulse corresponding with control command, and detect AC power and whether have input (i.e. civil power whether have a power failure, power-off), send enabling signal without during input to booster circuit 60 in AC power.
Output-stage circuit 40 connects circuit of power factor correction 30,400 volt DC power supplys that received power factor correcting circuit 30 exports for fluorescent tube provides work energy after being converted to the alternating current that power controls by dimmer pulse.
Booster circuit 60 connects adjusting control circuit 50 and output-stage circuit 40, and the electric energy for being provided by battery when receiving enabling signal carries out boosting process, and the DC power supply being converted into 400 volts is that output-stage circuit 40 is powered.What attention booster circuit 60 and output-stage circuit 40 exported is 400 volt direct currents, but the circuit produced is different.
Above-mentioned distance type is met an urgent need electronic lamp ballast circuit, receive remote signal by remote control signal receiver circuit 70 and control the frequency of the dimmer pulse that adjusting control circuit 50 exports after being demodulated to control command, and then control the power that output-stage circuit changes fluorescent tube, need to regulate lamp brightness according to the occasion of emergency lighting, reach the balance of brightness of illumination demand and illumination duration demand, realize effective utilization of battery power, and after lamp installation is good, remote adjustment can be carried out to emergent light.
Fig. 2 is that in an embodiment, distance type is met an urgent need the circuit theory diagrams of electronic lamp ballast circuit, and Fig. 3 is the circuit theory diagrams of middle output-stage circuit embodiment illustrated in fig. 2.The quantity of output-stage circuit is 2 in the present embodiment, namely comprises the first output-stage circuit and the second output-stage circuit, and their circuit structure is identical, comprises half-bridge inversion circuit 410, resonant circuit 420 and abnormity protection circuit 430.Be introduced for the first output-stage circuit below.
The control input end PWM1 of half-bridge inversion circuit 410 connects adjusting control circuit 50, and the power input DC400 of half-bridge inversion circuit 410 connects circuit of power factor correction.Under the driving of the dimmer pulse that half-bridge inversion circuit 410 inputs at PWM1, the 400 volt DC power supply inversions that circuit of power factor correction exports are alternating current and export.
The input of resonant circuit 420 connects the output of half-bridge inversion circuit 410, and the output of resonant circuit 420 connects fluorescent tube.Resonant circuit 420 comprises resonant inductance and the resonant capacitance of series connection mutually, for being obtained the voltage to fluorescent tube build-up of luminance by resonance.The resonance frequency of resonant circuit 420:
work as frequency shift, Frequency point off-resonance frequency, circuit impedance increases, and lamp load power output reduces, and namely achieves frequency modulation dimming function.
In the present embodiment, resonance frequency is set in 48KHz, now fluorescent tube full power exports.In the present embodiment, the inductance value L=3.3mH of resonant inductance T2 is set, the capacitance C=3.3nF of resonant capacitance C9.
The input of abnormity protection circuit 430 connects fluorescent tube, and the output of abnormity protection circuit 430 connects adjusting control circuit 50.When fluorescent tube occurs abnormal, during as fluorescent tube open circuit, filament inefficacy, high pressure can be produced at fluorescent tube one end (i.e. the input of abnormity protection circuit 430).When the voltage of the input of abnormity protection circuit 430 is higher than setting threshold, by the output EN1 of abnormity protection circuit 430, guard signal is sent to adjusting control circuit 50, control adjusting control circuit 50 and turn off dimmer pulse.
Fig. 4 is the circuit theory diagrams of middle power-switching circuit embodiment illustrated in fig. 2 and adjusting control circuit.Adjusting control circuit 50 comprises micro-control unit U2.In the present embodiment, micro-control unit U2 adopts model to be the chip of ATTINY2313V-10SU.
The command reception pin PD5 of micro-control unit U2 connects the output of remote control signal receiver circuit, for receiving described control command.The first pulse pin PB4 of micro-control unit U2 and the second pulse pin PB3 is for exporting dimmer pulse, the instruction frequency controlled processed of dimmer pulse controls, multiple gear is provided with the distance type remote controller that electronic lamp ballast circuit coordinates of meeting an urgent need, the corresponding gear instruction of each gear, such as first grade of correspondence, first grade of instruction.Following table is the light modulation gear of remote controller and the mapping table of dimmer pulse.
| Light modulation gear | Frequency setting | Corresponding light adjusting grade |
| First grade | f pwm＝48KHZ | 100% power stage |
| Second gear | f pwm＝52KHZ | About 80% power stage |
| Third gear | f pwm＝56KHZ | About 50% power stage |
| Fourth speed | f pwm＝60KHZ | About 20% power stage |
| Turn off the light | Closedown dimmer pulse exports | 0 power stage |
| Turn on light | Unlatching dimmer pulse exports | 100% power stage |
When temporarily not needing emergency lighting, in order to save the energy, can select to close emergency lighting, and opening at any time as required after power-off.
The first abnormal signal detection pin PB2 of micro-control unit U2 connects the output EN1 of the abnormity protection circuit 430 of the first output-stage circuit, turns off the dimmer pulse of the first pulse pin PB4 when guard signal being detected; The second abnormal signal detection pin PB1 of micro-control unit U2 connects the output EN2 of the abnormity protection circuit 430 of the second output-stage circuit, turns off the dimmer pulse of the second pulse pin PB3 when guard signal being detected.
Whether the city electro-detection pin PB0 of micro-control unit U2 has input for detecting AC power.Fig. 5 is the circuit theory diagrams of testing circuit in an embodiment.When AC power is without input situations such as () civil power power-off, power failures, the light emitting source of photoelectrical coupler U3 is not luminous, and light-receiving device turns off, and the output terminals A CTEST of testing circuit exports the high level from DC5V end.City electro-detection pin PB0 is connected with the output terminals A CTEST of testing circuit, when high level being detected, the booster circuit control pin PD6 of micro-control unit U2 sends enabling signal (high level), and booster circuit control pin PD6 connects the input CONTL494DC of booster circuit 60.Fig. 6 is the circuit theory diagrams of middle booster circuit embodiment illustrated in fig. 2, and in the present embodiment, booster circuit 60 adopts model to be that the PWM controller chip of TL494 is as control chip.Start working after the input CONTL494DC of booster circuit 60 receives enabling signal, the electric energy provided by battery carries out boosting process, and being converted into the DC power supply of 400 volts, is that output-stage circuit 40 is powered by DC400 port.
Fig. 7 is the circuit theory diagrams of middle remote control signal receiver circuit embodiment illustrated in fig. 2.Remote control signal receiver circuit 70 comprises receiving demodulation module, the negative pole pin GND ground connection of receiving demodulation module and and be connected to filter capacitor C23 (in fact not shown negative pole pin GND ground connection in Fig. 1 should to be as the criterion ground connection with Fig. 7) between supply pin Vcc.The output pin OUT of receiving demodulation module is the output of remote control signal receiver circuit 70.The output pin OUT of receiving demodulation module connects the working power DC5V (being namely the DC power supply of voltage 5V in the present embodiment) of receiving demodulation module by the first resistance R74, be connected to the second resistance R73 between one end of the first resistance R74 connection working power DC5V and the supply pin Vcc of receiving demodulation module.Receiving demodulation module is converted to control command by the demodulating unit of inside, then through command reception pin PD5, control command is sent to micro-control unit U2 by output pin OUT after receiving the remote signal of remote controller transmission.In the present embodiment, receiving demodulation module adopts model to be the device of SFH506-38.
Charger can be electrically connected with city, is battery charging when civil power exists.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (3)
1. distance type is met an urgent need an electronic lamp ballast circuit, it is characterized in that, comprises power-switching circuit, output-stage circuit, adjusting control circuit, remote control signal receiver circuit and booster circuit;
Described power-switching circuit is used for AC power to be converted to DC power supply; Described power-switching circuit comprises the filter circuit, rectification circuit and the circuit of power factor correction that connect in turn;
Described remote control signal receiver circuit for receiving remote signal, and by backward for remote signal demodulation described adjusting control circuit sending controling instruction;
Described adjusting control circuit connects described remote control signal receiver circuit, output-stage circuit and booster circuit, for to the described output-stage circuit transmission frequency dimmer pulse corresponding with control command, and detect described AC power and whether have input, send enabling signal without during input to described booster circuit in AC power;
Described output-stage circuit connects described power-switching circuit, receives described DC power supply and for fluorescent tube provides work energy after being converted to the alternating current that power controls by described dimmer pulse;
Described booster circuit connects described adjusting control circuit and output-stage circuit, and the electric energy for being provided by battery when receiving described enabling signal carries out boosting process, and being converted into DC power supply is that described output-stage circuit is powered;
Described output-stage circuit comprises:
Half-bridge inversion circuit, the control input end of described half-bridge inversion circuit connects described adjusting control circuit, the power input of described half-bridge inversion circuit connects circuit of power factor correction, under the driving of described dimmer pulse, the DC power supply inversion that circuit of power factor correction exports is alternating current and is exported;
Resonant circuit, the input of described resonant circuit connects the output of described half-bridge inversion circuit, and the output of described resonant circuit connects described fluorescent tube, for being obtained the voltage to described fluorescent tube build-up of luminance by resonance;
Abnormity protection circuit, the input of described abnormity protection circuit connects described fluorescent tube, the output of described abnormity protection circuit connects described adjusting control circuit, when the voltage of the input of abnormity protection circuit is higher than setting threshold, by the output of described abnormity protection circuit, guard signal is sent to described adjusting control circuit, control described adjusting control circuit and turn off described dimmer pulse;
The quantity of described output-stage circuit is 2;
Described adjusting control circuit comprises micro-control unit; The command reception pin of described micro-control unit connects the output of described remote control signal receiver circuit, for receiving described control command, first pulse pin of described micro-control unit and the second pulse pin are for exporting described dimmer pulse, and the frequency of described dimmer pulse controls by described control command; First abnormal signal detection pin of described micro-control unit connects the output of the abnormity protection circuit of the first output-stage circuit, the dimmer pulse of described first pulse pin is turned off when described guard signal being detected, second abnormal signal detection pin of described micro-control unit connects the output of the abnormity protection circuit of the second output-stage circuit, turns off the dimmer pulse of described second pulse pin when described guard signal being detected;
Described distance type electronic lamp ballast circuit of meeting an urgent need also comprises testing circuit, described testing circuit comprises photoelectrical coupler, diode, resistance R43, resistance R44, resistance R45, resistance R46, resistance R47, resistance R48, resistance R49, resistance R50, resistance R51 and resistance R52, described diode is in parallel with described resistance R47, the negative pole contact resistance R48 of diode and one end of resistance R49, the other end of resistance R48 and one end of other end contact resistance R43 of resistance R49 one end of contact resistance R44, the other end of resistance R43 and the other end of resistance R44 are for being connected zero line, the positive pole contact resistance R50 of diode and one end of resistance R51, the other end of resistance R50 and one end of other end contact resistance R45 of resistance R51 one end of contact resistance R46, the other end of resistance R45 with the resistance R46 other end for being connected live wire, the light emitting source two ends of photoelectrical coupler connect positive pole and the negative pole of described diode respectively, the light-receiving device minus earth of photoelectrical coupler, light-receiving device positive pole connects city's electro-detection pin of micro-control unit and connects direct current 5 volts of power supplys by described resistance R52, whether city's electro-detection pin of described micro-control unit has input for detecting described AC power, described city electro-detection pin is when high level being detected, the booster circuit control pin of described micro-control unit sends enabling signal, described booster circuit control pin connects described booster circuit.
2. distance type according to claim 1 is met an urgent need electronic lamp ballast circuit, it is characterized in that, described resonant circuit comprises resonant inductance and the resonant capacitance of series connection mutually, and the inductance value of described resonant inductance is 3.3 millihenries, and the capacitance of described resonant capacitance is 3.3 nano farads;
In described control command, the frequency of the dimmer pulse that first grade of instruction is corresponding is 48 KHz, the frequency of the dimmer pulse that second gear instruction is corresponding is 52 KHz, third gear instruction corresponding frequency be 56 KHz, the frequency of the dimmer pulse that fourth speed instruction is corresponding is 60 KHz.
3. distance type according to claim 1 and 2 is met an urgent need electronic lamp ballast circuit, it is characterized in that, described remote control signal receiver circuit comprises receiving demodulation module, the negative pole pin ground connection of described receiving demodulation module, and and be connected to filter capacitor between supply pin, the output pin of described receiving demodulation module is the output of remote control signal receiver circuit, the output pin of described receiving demodulation module connects the working power of receiving demodulation module by the first resistance, the second resistance is connected between one end of described first resistance connection working power and the supply pin of described receiving demodulation module.
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| CN201110170082.0A CN102843848B (en) | 2011-06-22 | 2011-06-22 | Electronic ballast circuit used for remote control type emergency lamp |
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| CN102843848B true CN102843848B (en) | 2015-01-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW201502416A (en) * | 2014-09-05 | 2015-01-16 | qi-zhang Chen | Sensing type fluorescent lamp device combined with normal and abnormal illumination |
| CN110621113A (en) * | 2019-09-19 | 2019-12-27 | 中国灌溉排水发展中心 | Energy-saving ultraviolet disinfection device capable of adjusting light intensity |
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| CN201526889U (en) * | 2009-09-17 | 2010-07-14 | 上海宝钢化工有限公司 | Distribution station dual-use remote emergency light |
| CN101801131A (en) * | 2010-02-08 | 2010-08-11 | 海洋王照明科技股份有限公司 | Emergency lamp control circuit and emergency illumination lamp fitting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10337148A1 (en) * | 2003-08-13 | 2005-03-17 | Sander Elektronik Ag | emergency lighting |
| CN201081872Y (en) * | 2005-12-21 | 2008-07-02 | 美美电子产品有限公司 | Automatic lamp panel dimmer |
| CN101715271A (en) * | 2008-10-06 | 2010-05-26 | 奥斯兰姆有限公司 | Emergency ballast system |
| CN101772250B (en) * | 2010-02-08 | 2013-08-28 | 海洋王照明科技股份有限公司 | Dimmable electronic ballast |
| CN201789674U (en) * | 2010-08-16 | 2011-04-06 | 陈洪川 | Remote-control type intelligent electronic ballast |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526889U (en) * | 2009-09-17 | 2010-07-14 | 上海宝钢化工有限公司 | Distribution station dual-use remote emergency light |
| CN101801131A (en) * | 2010-02-08 | 2010-08-11 | 海洋王照明科技股份有限公司 | Emergency lamp control circuit and emergency illumination lamp fitting |
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