CN102595746A - Driving device of fluorescent tube and method and lighting device thereof - Google Patents
Driving device of fluorescent tube and method and lighting device thereof Download PDFInfo
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- CN102595746A CN102595746A CN2011100093642A CN201110009364A CN102595746A CN 102595746 A CN102595746 A CN 102595746A CN 2011100093642 A CN2011100093642 A CN 2011100093642A CN 201110009364 A CN201110009364 A CN 201110009364A CN 102595746 A CN102595746 A CN 102595746A
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Abstract
The invention relates to a driving device of a fluorescent tube and a method and a lighting device thereof. The driving device of the fluorescent tube comprises a conversion unit, a power factor correction unit, a driving unit and a detection unit, wherein the conversion unit is used for receiving alternating current power and converting the same so as to supply direct current power. According to the invention, when the fluorescent tube fails to work, no matter a power switch which is connected to the fluorescent tube is no or off, the power supply to both ends of the failing fluorescent tube is stopped, so that a repairer replaces the fluorescent tube under a safe environment without electric shock; simultaneously, when the fluorescent tube is replaced, the replaced fluorescent tube can be automatically detected and turned on without switching the power switch which is connected with the fluorescent tube, so that the potential danger to the repairers climbing up and down a ladder for a plurality of times is prevented.
Description
Technical field
The invention relates to a kind of Driving technique of fluorescent tube, and particularly relevant for a kind of drive unit and method and applied lighting device of hot cathode fluorescent tube.
Background technology
The lighting device that uses in the life now; Be to be main to select fluorescent tube for use; Wherein account for maximum with (hot cathode) fluorescent tube of vertical bar long tube pattern again, and on specification is distinguished, the fluorescent tube (can be described as fluorescent tube again) of different tube diameters such as T3, T5, T8 and T9 is arranged.Yet no matter the fluorescent tube of T3, T5, T8 or T9 specification, its principle of luminosity is all identical, all is to utilize lamp current to cause that the mercury vapour deburring swashs the fluorescent paint of tube inner wall and luminous.
And the drive unit of existing fluorescent tube (T9/T8/T5/T3) roughly can be divided into two types; The one of which class is not for providing any protection mechanism/measure, another kind of protection mechanism/measure that outage (shutdown) then can be provided when fluorescent tube breaks down when fluorescent tube breaks down.Clearer; When the fluorescent tube that is installed on the lamp socket breaks down; And when the drive unit of the fluorescent tube of being selected for use can't provide any protection mechanism/measure, then the drive unit of fluorescent tube can continue the two ends of the fluorescent tube of failed are supplied power.Yet the personnel that change fluorescent tube are not necessarily the professional, and the very possible mains switch that will not be associated with fluorescent tube is earlier just closed and changed.Thus, in the process of changing fluorescent tube, the replacing personnel have the security concerns of electric shock.
On the other hand; When the fluorescent tube that is installed on the lamp socket breaks down; And when the drive unit of the fluorescent tube of being selected for use can provide the protection mechanism of outage/measure; The drive unit of fluorescent tube can stop the two ends of the fluorescent tube of failed are supplied power, thereby guarantees that the replacing personnel do not have the security concerns of electric shock.Yet because the lamp socket of fluorescent tube all is to be installed on the ceiling mostly, and the mains switch that is associated with fluorescent tube all is to be installed on the metope mostly.Therefore, when the fluorescent lamp pipe breaks down and need change,,, the replacing personnel just are able to the fluorescent tube of failed is changed so need seeing through the assistance of ladder mostly because heights of ceilings is higher.
But; Is the fluorescent tube of newly changing installed appropriate? Is the fluorescent tube of perhaps newly changing a non-defective unit? The replacing personnel need climb down ladder earlier with switch (that is open (ON) and close (OFF)) to being installed in mains switch on the metope after, can confirm just whether the fluorescent tube of newly changing can be normally luminous.If the fluorescent tube of newly changing can't be luminous; Then the fluorescent tube newly changed of expression might not install or be defective products; The replacing personnel install or again the fluorescent tube of failed changed to confirm whether to have so must climb up the ladder again; Then climb down ladder again with to being installed in after mains switch on the metope switches, can confirm further just whether the fluorescent tube of newly changing can be normally luminous.
Hence one can see that, and the replacing personnel might need repeatedly on ladder, to climb up and climb down the replacing that could successfully accomplish fluorescent tube.Thus, not only waste time and energy, and more have the potential collision hazard of falling down.
Summary of the invention
In view of this, the present invention provides a kind of drive unit and method and applied lighting device of fluorescent tube, and it can provide the protection mechanism/measure of outage when fluorescent tube breaks down; Simultaneously, after the fluorescent lamp pipe is changed completion, can automatically detect the fluorescent tube of newly changing, and automatically light the fluorescent tube of newly changing.
The present invention provides a kind of drive unit of fluorescent tube, and it comprises: converting unit, power factor correcting unit, driver element, and detecting unit.Wherein, converting unit is in order to receiving AC power, and AC power is changed so that DC power supply to be provided.The power factor correcting unit couples converting unit, in order to the DC power supply that converting unit provided is carried out behind the power factor correcting and export.Driver element couples the power factor correcting unit, produces the AC driving signal in order to the output that reacts on the power factor correcting unit, in order to first fluorescent tube of drive installation on lamp socket.
Detecting unit couples driver element; Whether high-pressure side filament and low-pressure side filament in order to detect first fluorescent tube open circuit; And in the high-pressure side of first fluorescent tube filament and low-pressure side filament one of which opens circuit at least the time; Cause driver element to stop to produce the AC driving signal, and when being installed in originally that first fluorescent tube of failed is replaced by the second good fluorescent tube on the lamp socket, cause driver element to produce the AC driving signal again to drive second fluorescent tube.
In one embodiment of the invention, detecting unit comprises high voltage detecting circuit.High voltage detecting circuit couples the high-pressure side filament of first fluorescent tube; Whether the high-pressure side filament in order to detect first fluorescent tube opens circuit; And when filament opens circuit in the high-pressure side of first fluorescent tube; Send first detection signal and give driver element, stop to produce the AC driving signal in order to cause driver element with first state, and when being installed in originally that first fluorescent tube of failed is replaced by the second good fluorescent tube on the lamp socket; Send first detection signal and give driver element, produce the AC driving signal again in order to cause driver element with second state.
In one embodiment of the invention, detecting unit also comprises the low pressure circuit for detecting.The low pressure circuit for detecting couples the low-pressure side filament of first fluorescent tube; Whether the low-pressure side filament in order to detect first fluorescent tube opens circuit; And when the low-pressure side filament of first fluorescent tube opens circuit; Send second detection signal and give driver element, stop to produce the AC driving signal in order to cause driver element with first state, and when being installed in originally that first fluorescent tube of failed is replaced by the second good fluorescent tube on the lamp socket; Send second detection signal and give driver element, produce the AC driving signal again in order to cause driver element with second state.
In one embodiment of the invention, first and second fluorescent tube is at least the hot cathode fluorescent tube of T3, T5, T8 or T9.
The present invention provides a kind of driving method of fluorescent tube in addition, and it comprises: the conversion AC power is a DC power supply; DC power supply is carried out power factor correcting; React on and carry out the DC power supply of power factor correcting and produce the AC driving signal, in order to first fluorescent light emitting tube of drive installation on lamp socket; Whether high-pressure side filament and the low-pressure side filament of detecting first fluorescent tube open circuit; When the high-pressure side of first fluorescent tube filament and low-pressure side filament one of which opens circuit at least the time, stop to produce the AC driving signal; And when being installed in originally that first fluorescent tube of failed is replaced by the second good fluorescent tube on the lamp socket, produce the AC driving signal again to drive second fluorescent tube.
In one embodiment of the invention, the driving method of being carried also comprises: when the high-pressure side of first fluorescent tube filament and low-pressure side filament did not all open circuit, then sustainable utilization AC driving signal was to drive first fluorescent tube.
In one embodiment of the invention, the driving method of being carried also comprises: when first fluorescent tube of failed still is installed on the lamp socket, then continue to stop to produce the AC driving signal.
The present invention provides a kind of lighting device again, and it comprises: the lamp socket that fluorescent tube is installed; Mains switch; And the drive unit of the above-mentioned fluorescent tube that provides.
The present invention can be when fluorescent tube breaks down; The mains switch that no matter is associated with fluorescent tube is in unlatching (ON) and still closes (OFF); The capital stops the two ends of the fluorescent tube of failed are supplied power, thereby guarantees that the replacing personnel are to carry out at following of the environment that safety does not have an electric shock in the process of changing; Simultaneously; After the fluorescent lamp pipe is changed completion; Need not switch the mains switch that is associated with fluorescent tube again; Can automatically detect the fluorescent tube of newly changing, and automatically light the fluorescent tube of newly changing, thereby exempt the potential collision hazard that the replacing personnel need repeatedly climb up and climb down on ladder.
Will be appreciated that above-mentioned general description and following embodiment are merely exemplary and illustrative, it can not limit the scope that institute of the present invention desire is advocated.
Description of drawings
Below appended graphic be the part of specification of the present invention, illustrated example embodiment of the present invention, principle of the present invention is explained in appended graphic description with specification.
Fig. 1 illustrates the sketch map into the lighting device 10 of one embodiment of the invention.
Fig. 2 A illustrates the sketch map into the switch element SWU of one embodiment of the invention.
Fig. 2 B illustrates the conspectus into the high voltage detecting circuit 107a of another embodiment of the present invention.
Fig. 3 illustrates the driving method flow chart into the fluorescent tube of one embodiment of the invention.
The main element symbol description
10: lighting device
101: converting unit
103: the power factor correcting unit
105: driver element
107: detecting unit
107a: high voltage detecting circuit
107b: low pressure circuit for detecting
SW: mains switch
SWU: switch element
LH: lamp socket
Cp, C1: electric capacity
FT1, FT2: fluorescent tube
BR: bridge rectifier
CF: filter capacitor
HV: the high-pressure side filament of fluorescent tube
LV: the low-pressure side filament of fluorescent tube
R1～R6: resistance
The Q1:P transistor npn npn
The Q2:N transistor npn npn
D1, D2: diode
ZD: Zener diode
V
AC: AC power
V
DC: DC power supply
D
AC: the AC driving signal
V
CC: system voltage
DH: first detection signal
DL: second detection signal
S301～S313: each step of driving method flow chart of the fluorescent tube of one embodiment of the invention
Embodiment
Existing with detailed reference example embodiment of the present invention, the instance of said example embodiment will be described in the accompanying drawings.In addition, all possibility parts use element/member of same numeral to represent identical or similar portions in graphic and execution mode.
Fig. 1 illustrates the sketch map of the lighting device (illumination apparatus) 10 into one embodiment of the invention.Please with reference to Fig. 1; The lighting device 10 of present embodiment can include mains switch (power switch) SW, lamp socket (lamp holder) LH; And by converting unit (conversionunit) 101, power factor correcting unit (power factor correction unit, PFC unit) 103, driver element (driving unit) 105, detecting unit (detection unit) 107 and electric capacity (capacitor) drive unit that Cp formed (driving apparatus).Wherein, The drive unit of being made up of converting unit 101, power factor correcting unit 103, driver element 105, detecting unit 107 and capacitor C p is in order to the fluorescent tube (fluorescenttube) of drive installation on lamp socket LH; For example be fluorescent tube FT1 or FT2, and fluorescent tube FT1 or FT2 can be hot cathode (hot-cathode) fluorescent tube of T3, T5, T8, T9 or other specification.
In present embodiment, the user can be installed in the fluorescent tube on the lamp socket LH with open and close through the Switching power switch SW.In other words, the drive unit of being made up of converting unit 101, power factor correcting unit 103, driver element 105, detecting unit 107 and capacitor C p can react on unlatching (ON) and the fluorescent light emitting tube of drive installation on lamp socket LH of mains switch SW; Otherwise, then react on the closing (OFF) of mains switch SW and stop the fluorescent tube of drive installation on lamp socket LH.
When user's desire was opened the fluorescent tube (for example being fluorescent tube FT1) that is installed on the lamp socket LH, converting unit 101 can react on the unlatching (ON) of mains switch SW and receive AC power (AC power) V
AC, and to AC power V
ACChange so that DC power supply (DC power) V to be provided
DCClearer, converting unit 101 can include bridge rectifier (bridge rectifier) BR and filter capacitor (filter capacitor) CF.Wherein, bridge rectifier BR is in order to receive AC power V
AC, and to AC power V
ACCarry out (all-wave or half-wave) rectification so that DC power supply V to be provided
DCFilter capacitor CF then couples bridge rectifier BR, in order to the DC power supply V that bridge rectifier BR is provided
DCCarry out filtering, in order to reduce DC power supply V
DCRipple factor (ripple factor).
What deserves to be mentioned is earlier that at this according to the standard of Energy Star (Energy-Star), the input power factor of commercial lighting driving power requires to be not less than 0.9, and home lighting is not less than 0.7.Also also because of like this, in present embodiment, power factor correcting unit 103 can be coupled to converting unit 101, and the DC power supply V in order to converting unit 101 is provided
DCCarry out behind the power factor correcting and export, in order to meet the standard of Energy Star.In addition, driver element 105 can be coupled to power factor correcting unit 103, and produces the AC driving signal D of relatively high pressure in order to the output that reacts on power factor correcting unit 103
AC(AC driving signal, it is special to be generally quite a few hectovolts) is in order to the fluorescent tube FT1 of drive installation on lamp socket LH.
Moreover; Detecting unit 107 can be coupled to driver element 105, and in order to high-pressure side filament (high side filament) HV and low-pressure side filament (1ow side filament) LV that detecting is installed in the fluorescent tube FT1 on the lamp socket LH whether open circuit (broken).The high-pressure side filament HV of fluorescent tube FT1 on being installed in lamp socket LH and low-pressure side filament LV one of which opens circuit at least the time, detecting unit 107 can cause driver element 105 to stop to produce AC driving signal D
ACIn addition, when the fluorescent tube FT1 of failed was replaced by good fluorescent tube FT2 on originally being installed in lamp socket LH, detecting unit 107 can cause driver element 105 to produce AC driving signal D again
ACTo drive the fluorescent tube FT2 that newly changes, need not switch mains switch SW again.
Clearer, detecting unit 107 can include high voltage detecting circuit (high voltagedetection circuit) 107a and low pressure circuit for detecting (low voltage detection circuit) 107b.Wherein, High voltage detecting circuit 107a couples the high-pressure side filament HV of fluorescent tube FT1; Whether the high-pressure side filament HV in order to detecting fluorescent tube FT1 opens circuit, and in the high-pressure side of fluorescent tube FT1 when filament HV opens circuit, and sends and have first state (electronegative potential for example; First detection signal DH 0V) gives driver element 105, stops to produce AC driving signal D in order to cause driver element 105
AC, and when originally being installed in fluorescent tube FT1 that lamp socket LH goes up failed and being replaced by good fluorescent tube FT2, send and have second state (for example high potential probably is system voltage V
CC) the first detection signal DH give driver element 105, produce AC driving signal D again in order to cause driver element 105
ACTo drive the fluorescent tube FT2 that newly changes.
In addition; Low pressure circuit for detecting 107b couples the low-pressure side filament LV of fluorescent tube FT1; Whether the low-pressure side filament LV in order to detecting fluorescent tube FT1 opens circuit, and when the low-pressure side filament LV of fluorescent tube FT1 opens circuit, and sends and have first state (electronegative potential for example; Second detection signal DL 0V) gives driver element 105, stops to produce AC driving signal D in order to cause driver element 105
AC, and when originally being installed in fluorescent tube FT1 that lamp socket LH goes up failed and being replaced by good fluorescent tube FT2, send and have second state (for example high potential probably is system voltage V
CC) the second detection signal DL give driver element 105, produce AC driving signal D again in order to cause driver element 105
ACTo drive the fluorescent tube FT2 that newly changes.
In present embodiment, high voltage detecting circuit 107a includes switch element (switching unit) SWU, resistance (resistor) R1 and R2, and Zener diode (Zener diode) ZD.Wherein, first end of switch element SWU is coupled to system voltage (system voltage) V
CC, second end of switch element SWU then couples first end of the high-pressure side filament HV of fluorescent tube FT1, and first end of the high-pressure side filament HV of fluorescent tube FT1 is more in order to receive the AC driving signal D that driver element 105 is produced
AC
First end of resistance R 1 couples second end and first end of capacitor C p of the high-pressure side filament HV of fluorescent tube FT1.The negative electrode of Zener diode ZD (cathode) couples second end of resistance R 1, and the anode of Zener diode ZD (anode) then is coupled to earthing potential (ground).First end of resistance R 2 couples the negative electrode of Zener diode ZD and the control end of switch element SWU, and gives driver element 105 in order to produce the first detection signal DH, and second end of resistance R 2 then is coupled to earthing potential.
Clearer, as can illustrating like Fig. 2 A, switch element SWU comprises (P type) transistor Q1 (for example being PMOS transistor (transistor)) and resistance R 3.Wherein, first end of resistance R 3 as first end of switch element SWU to be coupled to system voltage V
CCSource electrode (source) the coupling system voltage V of P transistor npn npn Q1
CCThe drain electrode (drain) of P transistor npn npn Q1 is as second end of switch element SWU first end with the high-pressure side filament HV that is coupled to fluorescent tube FT1, the grid (gate) of P transistor npn npn Q1 then as the control end of switch element SWU to be coupled to second end of resistance R 3.
Even Fig. 2 B provides the line map of the enforcement aspect of another kind of high voltage detecting circuit 107a.In Fig. 2 B, first end of resistance R 6 is coupled to system voltage V
CC, the anode of diode D2 is coupled to second end of resistance R 6, and the negative electrode of diode D2 then is coupled to first end of the high-pressure side filament HV of fluorescent tube FT1.In addition, sign is all similar with Fig. 1 with the annexation of the element of the identical numbering of Fig. 1 among Fig. 2 B, so also no longer give unnecessary details at this.And what deserves to be mentioned is that at this benefit of diode D2 among Fig. 2 B is the power consumption of resistance R 6 to be reduced half and reduce operating temperature effectively, it is because of only remaining half work period of the circuit that includes diode D2 and resistance R 6.
In addition, low pressure circuit for detecting 107b includes resistance R 4 and R5, diode D1, capacitor C 1, and (N type) transistor Q2 (for example being nmos pass transistor).Wherein, first end of resistance R 4 is coupled to system voltage V
CCThe negative electrode of diode D1 couples first end and second end of capacitor C p of the low-pressure side filament LV of fluorescent tube FT1, and the anode of diode D1 then couples second end of resistance R 4, and second end of the low-pressure side filament LV of fluorescent tube FT1 is coupled to earthing potential.First end of capacitor C 1 couples the anode of diode D1, and second end of capacitor C 1 then is coupled to earthing potential.First end of the grid coupling capacitance C1 of N transistor npn npn Q2, the source electrode of N transistor npn npn Q2 is coupled to earthing potential, and the drain electrode of N transistor npn npn Q2 is then given driver element 105 in order to produce the second detection signal DL.First end of resistance R 5 is coupled to system voltage V
CC, second end of resistance R 5 then couples the drain electrode of N transistor npn npn Q2.
Based on above-mentioned, when the fluorescent tube FT1 that is installed on the lamp socket LH is a non-defective unit, and user's Switching power switch SW and desire be when opening fluorescent tube FT1, and driver element 105 can produce the AC driving signal D of relatively high pressures
ACLuminous to drive fluorescent tube FT1.And capacitor C p can provide sufficiently high starting resistor, and when fluorescent tube FT1 steady operation, suitable heater current is provided in the instantaneous process that fluorescent tube FT1 starts.With this understanding, because high-pressure side filament HV and the low-pressure side filament LV of fluorescent tube FT1 do not open circuit, so P transistor npn npn Q1 and N transistor npn npn Q2 can close (turn-off).Thus, high voltage detecting circuit 107a and low pressure circuit for detecting 107b can distinctly send first detection signal DH of high potential and the second detection signal DL of high potential, continue to produce the AC driving signal D of relatively high pressure in order to cause driver element 105
ACLuminous to drive fluorescent tube FT1.
In this, suppose fluorescent tube FT1 in luminous process, its high-pressure side filament HV opens circuit, and its low-pressure side filament does not open circuit.With this understanding, react on the cause of resistance R 2 ground connection, the first detection signal DH that high voltage detecting circuit 107a can send electronegative potential gives driver element 105, thereby makes driver element 105 can stop to produce AC driving signal D
ACMeanwhile, P transistor npn npn Q1 can react on the first detection signal DH and the conducting (turn-on) of electronegative potential, to such an extent as to system voltage V
CCCan be conducted to first end of the high-pressure side filament HV of fluorescent tube FT1.
When the fluorescent tube FT1 of failed is replaced by good fluorescent tube FT2 by (user) on originally being installed in lamp socket LH; Because the high-pressure side filament HV of fluorescent tube FT2 does not open circuit; So high voltage detecting circuit 107a can send the first detection signal DH of high potential and give driver element 105, to such an extent as to driver element 105 can produce AC driving signal D again
ACTo drive the fluorescent tube FT2 that newly changes, need not switch mains switch SW again.Meanwhile, P transistor npn npn Q1 also can react on the first detection signal DH of high potential and close (turn-off), thus the AC driving signal D that avoids driver element 105 to be produced
ACSkew takes place and be damaged to the fluorescent tube FT2 that newly changes.
On the other hand, suppose fluorescent tube FT1 in luminous process, its high-pressure side filament HV does not open circuit, and is that its low-pressure side filament LV opens circuit on the contrary.With this understanding, react on resistance R 4 and be coupled to system voltage V
CCCause, N transistor npn npn Q2 can conducting (turn-on), gives driver element 105 to such an extent as to low pressure circuit for detecting 107b can send the second detection signal DL of electronegative potential, thereby makes driver element 105 can stop to produce AC driving signal D
ACWhen the fluorescent tube FT1 of failed is replaced by good fluorescent tube FT2 by (user) on originally being installed in lamp socket LH; Because the low-pressure side filament LV of fluorescent tube FT2 does not open circuit; So can transferring to, N transistor npn npn Q2 closes (turn-off); To such an extent as to low pressure circuit for detecting 107b can send the second detection signal DL of high potential and give driver element 105, thereby makes driver element 105 can produce AC driving signal D again
ACTo drive the fluorescent tube FT2 that newly changes.
Hence one can see that; The drive unit of present embodiment can be when fluorescent tube breaks down; The mains switch that no matter is associated with fluorescent tube is in unlatching (ON) and still closes (OFF); The capital stops the two ends of the fluorescent tube of failed are supplied power, thereby guarantees that the replacing personnel are to carry out at following of the environment that safety does not have an electric shock in the process of changing; Simultaneously; After the fluorescent lamp pipe is changed completion; Need not switch the mains switch that is associated with fluorescent tube again; Can automatically detect the fluorescent tube of newly changing, and automatically light the fluorescent tube of newly changing, thereby exempt the potential collision hazard that the replacing personnel need repeatedly climb up and climb down on ladder.
Disclose/content of teaching based on the foregoing description, Fig. 3 illustrates the driving method flow chart into the fluorescent tube of one embodiment of the invention.Please with reference to Fig. 3, the driving method of the fluorescent tube of present embodiment may further comprise the steps:
The conversion AC power is DC power supply (step S301);
DC power supply is carried out power factor correcting (step S303);
React on and carry out the DC power supply of power factor correcting and produce AC driving signal (step S305), in order to the fluorescent light emitting tube of drive installation on lamp socket;
In the process of the fluorescent light emitting tube on being installed in lamp socket, high-pressure side filament and the low-pressure side filament that detecting is installed in the fluorescent tube on the lamp socket whether open circuit (step S307);
The high-pressure side filament of the fluorescent tube on being installed in lamp socket and low-pressure side filament one of which opens circuit at least the time; Then stop to produce AC driving signal (step S309); Otherwise, return step S305 and sustainable utilization AC driving signal with the fluorescent tube of drive installation on lamp socket;
After stopping to produce the AC driving signal, judge whether the fluorescent tube originally be installed in failed on the lamp socket has to be replaced by good fluorescent tube (step S311); And
When the fluorescent tube that originally is installed in failed on the lamp socket has been replaced by good fluorescent tube; Then produce AC driving signal (step S313) again to drive the fluorescent tube of newly changing; And return step S307; Otherwise (that is the fluorescent tube of failed still is installed on the lamp socket) continues to stop to produce the AC driving signal.
In sum; The drive unit of fluorescent tube provided by the present invention and method thereof can be when fluorescent tube break down; The mains switch that no matter is associated with fluorescent tube is in unlatching (ON) and still closes (OFF); The capital stops the two ends of the fluorescent tube of failed are supplied power, thereby guarantees that the replacing personnel are to carry out at following of the environment that safety does not have an electric shock in the process of changing; Simultaneously; After the fluorescent lamp pipe is changed completion; Need not switch the mains switch that is associated with fluorescent tube again; Can automatically detect the fluorescent tube of newly changing, and automatically light the fluorescent tube of newly changing, thereby exempt the potential collision hazard that the replacing personnel need repeatedly climb up and climb down on ladder.
Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the technical field under any; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is when looking accompanying being as the criterion that claim defines.In addition, arbitrary embodiment of the present invention or claim must not reached whole purposes or advantage or the characteristics that the present invention discloses.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not to be used for limiting interest field of the present invention.
Claims (14)
1. the drive unit of a fluorescent tube is characterized in that, comprising:
One converting unit in order to receiving an AC power, and is changed so that a direct current power supply to be provided this AC power;
One power factor correcting unit couples this converting unit, in order to this DC power supply is carried out behind the power factor correcting and export;
One driver element couples this power factor correcting unit, produces an AC driving signal in order to the output that reacts on this power factor correcting unit, in order to one first fluorescent tube of drive installation on a lamp socket; And
One detecting unit; Couple this driver element; Whether a high-pressure side filament and a low-pressure side filament in order to detect this first fluorescent tube open circuit; And in this high-pressure side filament and this low-pressure side filament one of which opens circuit at least the time; Cause this driver element to stop to produce this AC driving signal, and when this first fluorescent tube of failed is replaced by one second good fluorescent tube on originally being installed in this lamp socket, cause this driver element to produce this AC driving signal again to drive this second fluorescent tube.
2. the drive unit of fluorescent tube as claimed in claim 1 is characterized in that, this detecting unit comprises:
One high voltage detecting circuit; Couple this high-pressure side filament; Whether open circuit in order to detect this high-pressure side filament, and when this high-pressure side filament opens circuit, send one first detection signal and give this driver element with one first state; In order to cause this driver element to stop to produce this AC driving signal; And when this first fluorescent tube of failed is replaced by this good second fluorescent tube on originally being installed in this lamp socket, sends this first detection signal with one second state and give this driver element, produce this AC driving signal again in order to cause this driver element.
3. the drive unit of fluorescent tube as claimed in claim 2 is characterized in that, this high voltage detecting circuit comprises:
One switch element, its first end is coupled to a system voltage, and its second end then couples first end of this high-pressure side filament, and wherein first end of this high-pressure side filament is also in order to receive this AC driving signal;
One first resistance, its first end couples second end of this high-pressure side filament;
One Zener diode, its negative electrode couple second end of this first resistance, and its anode then is coupled to an earthing potential; And
One second resistance, its first end couples the negative electrode of this Zener diode and the control end of this switch element, and gives this driver element in order to produce this first detection signal, and its second end then is coupled to this earthing potential.
4. the drive unit of fluorescent tube as claimed in claim 3 is characterized in that, this switch element comprises:
One the 3rd resistance, its first end as first end of this switch element to be coupled to this system voltage; And
One the first transistor, its source electrode couples this system voltage, its drain electrode as second end of this switch element being coupled to first end of this high-pressure side filament, its grid then as the control end of this switch element to be coupled to second end of the 3rd resistance.
5. the drive unit of fluorescent tube as claimed in claim 4 is characterized in that, this detecting unit also comprises:
One low pressure circuit for detecting; Couple this low-pressure side filament; Whether open circuit in order to detect this low-pressure side filament, and when this low-pressure side filament opens circuit, send one second detection signal and give this driver element with one first state; In order to cause this driver element to stop to produce this AC driving signal; And when this first fluorescent tube of failed is replaced by this good second fluorescent tube on originally being installed in this lamp socket, sends this second detection signal with one second state and give this driver element, produce this AC driving signal again in order to cause this driver element.
6. the drive unit of fluorescent tube as claimed in claim 5 is characterized in that, this low pressure circuit for detecting comprises:
One the 4th resistance, its first end is coupled to this system voltage;
One diode, its negative electrode couple first end of this low-pressure side filament, and its anode then couples second end of the 4th resistance, and wherein second end of this low-pressure side filament is coupled to this earthing potential;
One first electric capacity, its first end couples the anode of this diode, and its second end then is coupled to this earthing potential;
One transistor seconds, its grid couple first end of this first electric capacity, and its source electrode is coupled to this earthing potential, and its drain electrode is then given this driver element in order to produce this second detection signal; And
One the 5th resistance, its first end is coupled to this system voltage, and its second end then couples the drain electrode of this transistor seconds.
7. the drive unit of fluorescent tube as claimed in claim 6 is characterized in that, this first transistor is a P transistor npn npn, and this transistor seconds is a N transistor npn npn.
8. the drive unit of fluorescent tube as claimed in claim 6 is characterized in that, also comprises:
One second electric capacity, its first end couples second end of this high-pressure side filament, and its second end then couples first end of this low-pressure side filament.
9. the drive unit of fluorescent tube as claimed in claim 2 is characterized in that, this high voltage detecting circuit comprises:
One first resistance, its first end is coupled to a system voltage;
One diode, its anode couple second end of this first resistance, and its negative electrode then couples first end of this high-pressure side filament, and wherein first end of this high-pressure side filament is also in order to receive this AC driving signal;
One second resistance, its first end couples second end of this high-pressure side filament;
One Zener diode, its negative electrode couple second end of this second resistance, and its anode then is coupled to an earthing potential; And
One the 3rd resistance, its first end couples the negative electrode of this Zener diode, and gives this driver element in order to produce this first detection signal, and its second end then is coupled to this earthing potential.
10. the drive unit of fluorescent tube as claimed in claim 1 is characterized in that, this converting unit comprises:
One bridge rectifier in order to receiving this AC power, and carries out rectification so that this DC power supply to be provided to this AC power; And
One filter capacitor couples this bridge rectifier, in order to this DC power supply that this bridge rectifier provided is carried out filtering.
11. the drive unit of fluorescent tube as claimed in claim 1 is characterized in that, this first with this second fluorescent tube be at least the hot cathode fluorescent tube.
12. the driving method of a fluorescent tube is characterized in that, comprising:
Changing an AC power is a direct current power supply;
This DC power supply is carried out power factor correcting;
React on this and carry out the DC power supply of power factor correcting and produce an AC driving signal, in order to one first fluorescent light emitting tube of drive installation on a lamp socket;
Whether a high-pressure side filament and a low-pressure side filament of detecting this first fluorescent tube open circuit;
When this high-pressure side filament and this low-pressure side filament one of which opens circuit at least the time, stop to produce this AC driving signal; And
When this first fluorescent tube of failed is replaced by one second good fluorescent tube on originally being installed in this lamp socket, produce this AC driving signal again to drive this second fluorescent tube.
13. the driving method of fluorescent tube as claimed in claim 12 is characterized in that, also comprises:
When this high-pressure side filament and this low-pressure side filament did not all open circuit, then this AC driving signal of sustainable utilization was to drive this first fluorescent tube.
14. the driving method of fluorescent tube as claimed in claim 12 is characterized in that, also comprises:
When this first fluorescent tube of failed still is installed on this lamp socket, then continue to stop to produce this AC driving signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100093642A CN102595746A (en) | 2011-01-12 | 2011-01-12 | Driving device of fluorescent tube and method and lighting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100093642A CN102595746A (en) | 2011-01-12 | 2011-01-12 | Driving device of fluorescent tube and method and lighting device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102595746A true CN102595746A (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100093642A Pending CN102595746A (en) | 2011-01-12 | 2011-01-12 | Driving device of fluorescent tube and method and lighting device thereof |
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| Country | Link |
|---|---|
| CN (1) | CN102595746A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200994217Y (en) * | 2006-04-13 | 2007-12-19 | 中国电子科技集团公司第五十五研究所 | Fluorescent lamp tube emergency lighting lamp |
| WO2009158330A2 (en) * | 2008-06-26 | 2009-12-30 | Osram Sylvania, Inc. | Ballast with lamp filament detection |
| CN201393342Y (en) * | 2009-02-03 | 2010-01-27 | 苏州达方电子有限公司 | Electronic ballast and lighting device |
| CN101690409A (en) * | 2007-06-20 | 2010-03-31 | 松下电工株式会社 | Discharge lamp operating device, illumination device, and liquid crystal display device |
-
2011
- 2011-01-12 CN CN2011100093642A patent/CN102595746A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200994217Y (en) * | 2006-04-13 | 2007-12-19 | 中国电子科技集团公司第五十五研究所 | Fluorescent lamp tube emergency lighting lamp |
| CN101690409A (en) * | 2007-06-20 | 2010-03-31 | 松下电工株式会社 | Discharge lamp operating device, illumination device, and liquid crystal display device |
| WO2009158330A2 (en) * | 2008-06-26 | 2009-12-30 | Osram Sylvania, Inc. | Ballast with lamp filament detection |
| CN201393342Y (en) * | 2009-02-03 | 2010-01-27 | 苏州达方电子有限公司 | Electronic ballast and lighting device |
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Application publication date: 20120718 |