CN1523947A - Igniting device for dielectric barrier layer discharge lamp - Google Patents
Igniting device for dielectric barrier layer discharge lamp Download PDFInfo
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- CN1523947A CN1523947A CNA2003101177956A CN200310117795A CN1523947A CN 1523947 A CN1523947 A CN 1523947A CN A2003101177956 A CNA2003101177956 A CN A2003101177956A CN 200310117795 A CN200310117795 A CN 200310117795A CN 1523947 A CN1523947 A CN 1523947A
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- Prior art keywords
- dielectric barrier
- barrier discharge
- coil
- coils
- discharge lamp
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
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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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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
To light a plurality of dielectric barrier discharge lamps without flickering. A dielectric barrier discharge lamp lighting device uses an DC power supply 2 as an input power, synchronizes oscillation frequencies of a plurality of inverter circuits 100, 101, 102 with each other by connecting one sides of secondary windings 4 of inverter transformers 6 belonging to respective inverter circuits 100, 101, 102 to the ground and by connecting the other sides in parallel with each other, and lights the respective dielectric barrier discharge lamps without flickering. Furthermore, this makes all the dielectric barrier discharge lamps light at one time even in a case that the discharge lamps have a pair of usual electrodes respectively.
Description
Technical field
The present invention relates to the dielectric barrier discharge lamp ignition device
Prior art
As the lighting device of the backlight liquid crystal display light source that is suitable for uses such as personal computer or OA machine, dielectric barrier discharge lamp is applied.Wherein particularly as liquid crystal display picture the few discharge lamp of flicker takes place, the known so-called dielectric barrier discharge type low-pressure discharge lamp in tubular glass lamp container outer surface configured electrodes that has reality to open clear 61-126559 communique record.
In the occasion of using this dielectric barrier discharge type low-pressure discharge lamp as the back light of liquid crystal indicator, must light a plurality of discharge lamps simultaneously.And along with the maximization of display frame, the number of the discharge lamp of lighting simultaneously increases, so produced the situation that the ignition device of lighting these discharge lamps must drive respectively by a plurality of inverter circuits.As such ignition device, existing device shown in Figure 6.In the dielectric barrier discharge lamp ignition device of Fig. 6, a plurality of inverter circuits 100,101,102 comprise respectively: 1 coil 3 and 2 coils 4 of outlet side and the contravariant transformer 6 of 3 coils 5 with input side; Constitute the inductance composition of this contravariant transformer 6 and the resonant capacitor 7 of LC resonant circuit; Be used to drive the transistor 8,9 of its grounded emitter separately of contravariant transformer 6.And, an end ground connection of 2 coils 4 of each contravariant transformer 6, the other end is connected with dielectric barrier discharge lamp 110,111,112 respectively.
Dc power supply terminal 2 is connected by the base stage of resistors in series 11 with the input side transistor 8 of each inverter circuit 100,101,102 in order to provide drive current to a side transistor 8.Pair of transistor 8,9 grounded emitter separately, 1 coil 3 of contravariant transformer 6 is connected in parallel between its collector electrode.At this 1 coil 3 centre tap is set, dc power supply terminal 2 is connected in series by inductor 12 and this centre tap.Inductor 12 is made of choke, makes electric current constant currentization to each inverter circuit 100,101,102 input.And resonant capacitor 7 is connected in parallel between the collector electrode of pair of transistor 8,9.
And, primary side at each contravariant transformer 6 is provided with synchronous with transformer 15, by these are connected between the collector electrode of pair of transistor 8,9 of inverter circuit 100,101,102 with 1 coil of transformer 15 synchronously, use 2 coil connections parallel with one another of transformer 15 synchronously, make the Phase synchronization of high-frequency output voltage of inverter circuit 100,101,102, the high frequency voltage that can prevent to utilize out of phase thus drives a plurality of discharge lamps and the flicker that causes.That is, though a plurality of inverter circuit 100,101,102 is shared frequencies, but independent vibration, thus these contravariant transformers 6 outlet side produce the high frequency output that voltage and phase place depart from mutually.Light different dielectric barrier discharge lamp 110,111,112 respectively if adopt such high frequency output, voltage-phase by each discharge lamp departs from the moment potential difference that causes, will make electric current from the high discharge lamp surface leakage of current potential, flow to the low discharge lamp of current potential of adjacency.This phenomenon occurs repeatedly, flicker that will the induced discharge lamp.
Patent documentation 1: open clear 61-126559 communique in fact
Patent documentation 2: the spy opens the 2002-25786 communique
But, in the above-mentioned dielectric barrier discharge lamp ignition device, make the frequency and the Phase synchronization of frequency of oscillation of 1 side of the contravariant transformer 6 in each inverter circuit 100,101,102, but because of each contravariant transformer 6 in conjunction with deviation, make the magnitude of voltage or the phase place of 2 side generations difference occur, difference appears in this discharge lamp briliancy that makes 2 sides of each contravariant transformer 6 connect, and becomes the reason that produces flicker.
Summary of the invention
In order to solve the problem of these prior arts, finished the present invention.The object of the present invention is to provide a kind of dielectric barrier discharge lamp ignition device, conjugation by eliminating the contravariant transformer that a plurality of inverter circuits comprise or coil are than the influence of deviation, make more high precision synchronous of the voltage of each inverter circuit output high frequency output and phase place, thereby can flicker-freely drive a plurality of dielectric barrier discharge lamps.
Dielectric barrier discharge lamp ignition device of the present invention, DC power supply is provided, DC converting is become high-frequency ac output, utilize this high-frequency ac output respectively different dielectric barrier discharge lamps to be lit a lamp, it is characterized in that 2 coil one ends of the contravariant transformer that described a plurality of inverter circuits comprise interconnect.
And dielectric barrier discharge lamp ignition device of the present invention is characterized in that, described a plurality of inverter circuits comprise respectively: the contravariant transformer with 1 coil of input side, 2 coils of outlet side and 3 coils of input side; Be connected with described 1 coil of this contravariant transformer, constitute the inductance composition of this 1 coil and the resonant capacitor of LC resonant circuit; Input side is provided 3 coil outputs of DC power supply and described contravariant transformer, the oscillistor that outlet side is connected with described 1 coil.
Have again, dielectric barrier discharge lamp ignition device of the present invention, it is characterized in that, the other end ground connection of 2 coils of described contravariant transformer, described a plurality of dielectric barrier discharge lamps are connected between the common terminal and ground connection that connects of 2 coils of described contravariant transformer.
Have again, dielectric barrier discharge lamp ignition device of the present invention, it is characterized in that the other end of 2 coils of described contravariant transformer interconnects, described a plurality of dielectric barrier discharge lamps are connected between 2 coil terminals of described contravariant transformer.
And, dielectric barrier discharge lamp ignition device of the present invention, DC power supply is provided, DC converting is become high-frequency ac output, utilize this high-frequency ac output respectively different dielectric barrier discharge lamps to be lit a lamp, it is characterized in that 2 coil one ends of the contravariant transformer that described a plurality of inverter circuits comprise interconnect by synchrotrans, described dielectric barrier discharge lamp is connected with 2 coils of described contravariant transformer by described synchrotrans.
Have, dielectric barrier discharge lamp ignition device of the present invention is characterized in that again, described a plurality of inverter circuits comprise respectively: the contravariant transformer with 1 coil of input side, 2 coils of outlet side and 3 coils of input side; Be connected with described 1 coil of this contravariant transformer, constitute the inductance composition of this 1 coil and the resonant capacitor of LC resonant circuit; Input side is provided 3 coil outputs of DC power supply and described contravariant transformer, the oscillistor that outlet side is connected with described 1 coil.
Have again, dielectric barrier discharge lamp ignition device of the present invention, it is characterized in that, one end ground connection of 2 coils of the contravariant transformer that described a plurality of inverter circuit comprised, the other end of described 2 coils is connected with an end of 1 coil of each synchrotrans, 2 coil connections parallel with one another of described each synchrotrans, each dielectric barrier discharge lamp are connected between the other end and ground of 1 coil of described synchrotrans.
Have, dielectric barrier discharge lamp ignition device of the present invention is characterized in that again, an end ground connection of 2 coils of described each synchrotrans, and the other end interconnects.
Have, dielectric barrier discharge lamp ignition device of the present invention is characterized in that again, an end of 2 coils of described each synchrotrans is by switch ground connection to be opened/closed.
The dielectric barrier discharge lamp ignition device of the invention described above, because an end of 2 coils of each contravariant transformer that a plurality of inverter circuit comprised interconnects, so the output of each inverter circuit is same magnitude of voltage, become the alternating voltage of same phase place.That is, because an end of 2 coils of each contravariant transformer that a plurality of inverter circuit comprised interconnects, so the output voltage of this part and phase place are consistent with each other.As a result, because 2 coils that utilize contravariant transformer transmit the high frequency voltage of same voltage and phase place by iron core 1 coil sides, so 1 side of contravariant transformer also produces resonance because of the high frequency voltage of same voltage and phase place.
Like this, the output of each inverter circuit that voltage and phase place are consistent with each other is provided for the dielectric barrier discharge lamp that is connected with 2 coils of each contravariant transformer, and these lamps are lit a lamp, so each discharge lamp is always luminous with identical briliancy, can prevent flicker.
Description of drawings
Fig. 1 is the circuit diagram of the first embodiment of the present invention.
Fig. 2 is the circuit diagram of the second embodiment of the present invention.
Fig. 3 is the circuit diagram of the third embodiment of the present invention.
Fig. 4 is the circuit diagram of the fourth embodiment of the present invention.
Fig. 5 is the circuit diagram of the fifth embodiment of the present invention.
Fig. 6 is the circuit diagram of existing dielectric barrier discharge lamp ignition device.
Description of reference numerals
2 DC power supply
31 coils
42 coils
53 coils
6 contravariant transformers
7 resonant capacitors
8 transistors
9 transistors
10 synchrotrans
11 resistors
12 inductors
13 switches
100 inverter circuits
101 inverter circuits
102 inverter circuits
110 dielectric barrier discharge lamps
111 dielectric barrier discharge lamps
112 dielectric barrier discharge lamps
Embodiment
Below, embodiments of the invention are described with reference to the accompanying drawings.Fig. 1 has showed the circuit diagram of the dielectric barrier discharge lamp ignition device of first embodiment of the invention.In the present embodiment, for each inverter circuit 100,101,102 DC power supply 2 is set.A plurality of inverter circuits 100,101,102 are respectively same formations, are made of general known mode of resonance Luo Ye (ロ イ ヤ one) inverter circuit.
Inverter circuit 100,101,102 comprises separately, has 1 coil 3 and 2 coils 4 of outlet side and the contravariant transformer 6 of 3 coils 5 of input side; Constitute the inductance composition of this contravariant transformer 6 and the resonant capacitor 7 of LC resonant circuit; Be used to drive the transistor 8,9 of the grounded emitter separately of contravariant transformer 6.
One end ground connection of 2 coils 4 of each contravariant transformer 6, the other end of 2 coils 4 connects jointly.
In order to provide drive current to a transistor 8, DC power supply 2 in series is connected with base stage as the transistor 8 of inverter circuit 100,101,102 input side separately by resistor 11.Tapped 1 coil 3 that contravariant transformer 6 is set is connected in parallel between the collector electrode of pair of transistor 8,9 of each grounded emitter, and resonance transformer 7 also is connected in parallel.
For each input current that provides to inverter circuit 100,101,102 is provided is constant currentization, and DC power supply 2 also in series is connected with the centre tap of 1 coil 3 of contravariant transformer 6 by the inductor 12 that is made of choke.
One end of 3 coils 5 that are provided with at each contravariant transformer 6 is connected to the base stage side of transistor 8, and the other end is connected to the base stage side of transistor 9, and the Voltage Feedback that 3 coils 5 produce is applied to the base stage of transistor 8,9.
Below, with the work of dielectric barrier discharge lamp ignition device of first embodiment of the above-mentioned formation of explanation.If apply DC power supply 2, then each inductor 12 of electric current process flows to 1 coil 3 of contravariant transformer 6, is applied to the base stage of transistor 8 simultaneously by resistor 11 from the voltage of DC power supply 2 outputs.
1 coil 3 of each contravariant transformer 6 and the reactance of 3 coils 5 and resonant capacitor 7 resonance, between the terminal of 3 coils 5 of contravariant transformer 6, the high voltage that induction is only boosted by the turn ratio of 1 coil 3 of contravariant transformer 6 and 3 coils 5, while is at 3 coils 5 of contravariant transformer 6, the direction identical at the sense of current that flows through with 1 coil 3 flows through electric current, produce self-oscillation, by the mutual turn-on transistor 8,9 of resonance frequency.
The contravariant transformer of each inverter circuit 100,101,102 only boosts by the turn ratio of its 1 coil 3 and 2 coils 4.Because 2 coil 4 sides of each contravariant transformer 6 interconnect, so the output voltage of these coupling parts is consistent each other with phase place.As a result,, transmit the high frequency voltage of same voltage and phase place 1 coil sides, so also resonance under the high frequency voltage of same voltage and phase place of 1 side of contravariant transformer by iron core by 2 coils of contravariant transformer.
As a result, a plurality of dielectric barrier discharge lamps 110,111,112 utilize the interchange of phase place unanimity to light a lamp separately, can flicker-freely light a lamp to a plurality of dielectric barrier discharge lamps as ignition device integral body.
Below, utilize Fig. 2 that the dielectric barrier discharge lamp ignition device of second embodiment of the invention is illustrated.The dielectric barrier discharge lamp ignition device of second embodiment is characterized in that the two ends connection parallel with one another of 2 coils 4 of the contravariant transformer 6 of a plurality of inverter circuits 100,101,102.And a plurality of dielectric barrier discharge lamps 110,111,112 are connected between the two ends of 2 coils 4 of contravariant transformer 6 of a plurality of inverter circuits 100,101,102.Other formation is identical with first embodiment shown in Figure 1.
Dielectric barrier discharge lamp ignition device according to this second embodiment, by the work identical with first embodiment, make by a plurality of inverter circuits 100,101,102 and drive the interchange Phase synchronization that a plurality of dielectric barrier discharge lamps 110,111,112 of lighting a lamp are applied separately respectively, can flicker-freely light a lamp.
Below, adopt Fig. 3 that the dielectric barrier discharge lamp ignition device of the third embodiment of the present invention is illustrated.The dielectric barrier discharge lamp ignition device of the 3rd embodiment is characterised in that, one end ground connection of the contravariant transformer 6 of a plurality of inverter circuits 100,101,102 2 coils 4 separately, be connected in series 1 coil of synchrotrans 10 of the other end, by 1 coil of these synchrotrans 10, power respectively to dielectric barrier discharge lamp 110,111,112.And 2 coil sides of each synchrotrans 10 are connected in parallel.1 coil of synchrotrans 10 and the turn ratio of 2 coils are 1.Other formation is identical with first embodiment shown in Figure 1.
The dielectric barrier discharge lamp ignition device of present embodiment, adopt the operation principle identical with first embodiment shown in Figure 1, by making inverter circuit 100,101,102 1 side synchronous resonant separately, the result can utilize the interchange of phase place unanimity flicker-freely a plurality of dielectric barrier discharge lamps 110,111,112 to be lit a lamp, and, can utilize pair of electrodes respectively a plurality of dielectric barrier discharge lamps 110,111,112 to be lit a lamp.
Below, adopt Fig. 4 that the dielectric barrier discharge lamp ignition device of fourth embodiment of the invention is illustrated.In the dielectric barrier discharge lamp ignition device of present embodiment, one end ground connection of 2 coils 4 separately of the contravariant transformer 6 of a plurality of inverter circuits 100,101,102,1 coil of the other end and synchrotrans 10 is connected in series, by 1 coil of these synchrotrans 10, power respectively to dielectric barrier discharge lamp 110,111,112.And an end of an end of 2 coil sides of each synchrotrans 10 and 2 coils of another synchrotrans 10 is connected in parallel, the other end ground connection of 2 coils of each synchrotrans 10.1 coil of synchrotrans 10 and the turn ratio of 2 coils are 1, and other formation is identical with first embodiment shown in Figure 1.
The dielectric barrier discharge lamp ignition device of present embodiment, adopt and the identical operation principle of first embodiment shown in Figure 1, make inverter circuit 100,101,102 1 side synchronous resonant separately, and at 2 side synchrotrans 10 also in parallel, can make at the interchange phase place of dielectric barrier discharge lamp 110,111,112 consistent more thus, the result can utilize the interchange of phase place unanimity, flicker-freely a plurality of dielectric barrier discharge lamps 110,111,112 is lit a lamp.
Below, adopt Fig. 5 that the dielectric barrier discharge lamp ignition device of the fifth embodiment of the present invention is illustrated.In the dielectric barrier discharge lamp ignition device of present embodiment, one end ground connection of 2 coils 4 separately of the contravariant transformer 6 of a plurality of inverter circuits 100,101,102,1 coil of the other end and synchrotrans 10 is connected in series, by 1 coil of these synchrotrans 10, power respectively to dielectric barrier discharge lamp 110,111,112.And an end of an end of 2 coil sides of each synchrotrans 10 and 2 coils of another synchrotrans 10 is connected in parallel, and the other end of 2 coils of each synchrotrans 10 is by switch 13 ground connection.1 coil of synchrotrans 10 and the turn ratio of 2 coils are 1.Other formation is identical with first embodiment shown in Figure 1.
The dielectric barrier discharge lamp ignition device of present embodiment, be in the state of disconnection at switch 13, become circuit formation with the first embodiment equivalence shown in Figure 1, therefore adopt the operation principle identical with first embodiment, by making inverter circuit 100,101,102 1 side synchronous resonant separately, the result can utilize the interchange of phase place unanimity, flicker-freely a plurality of dielectric barrier discharge lamps 110,111,112 is lit a lamp.And the switch 13 of the dielectric barrier discharge lamp ignition device of present embodiment is in closed state, become circuit formation with the 4th embodiment equivalence shown in Figure 4, by the work identical with the 4th embodiment, can utilize the interchange of phase place unanimity, flicker-freely a plurality of dielectric barrier discharge lamps 110,111,112 be lit a lamp.
According to above-mentioned the present invention, the dielectric barrier discharge lamp ignition device of the invention described above, because an end of 2 coils of each contravariant transformer that a plurality of inverter circuit comprised interconnects, so the output of each inverter circuit is same magnitude of voltage, becomes the alternating voltage of same phase place.That is an end of 2 coils of each contravariant transformer that a plurality of inverter circuit comprised interconnects, so the output voltage of this part and phase place are consistent with each other.As a result, by 2 coils of contravariant transformer, transmit the high frequency voltage of same voltage and phase place by iron core 1 coil sides, so 1 side of contravariant transformer also produces resonance by the high frequency voltage of same voltage and phase place.
Like this, the output of each inverter circuit that voltage and phase place are consistent with each other, each discharge lamp offers the dielectric barrier discharge lamp that is connected with 2 coils of contravariant transformer respectively, these discharge lamps lit a lamp, so can always flicker-freely be lit a lamp with identical briliancy.
Claims (9)
1. dielectric barrier discharge lamp ignition device, DC power supply is provided, DC converting is become high-frequency ac output, utilize this high-frequency ac output respectively different dielectric barrier discharge lamps to be lit a lamp, it is characterized in that 2 coil one ends of the contravariant transformer that described a plurality of inverter circuits comprise interconnect.
2. according to the dielectric barrier discharge lamp ignition device of claim 1, it is characterized in that described a plurality of inverter circuits comprise respectively: contravariant transformer with 1 coil of input side, 2 coils of outlet side and 3 coils of input side; Be connected with described 1 coil of this contravariant transformer, constitute the inductance composition of this 1 coil and the resonant capacitor of LC resonant circuit; Input side is provided 3 coil outputs of DC power supply and described contravariant transformer, the oscillistor that outlet side is connected with described 1 coil.
3. according to the dielectric barrier discharge lamp ignition device of claim 2, it is characterized in that, the other end ground connection of 2 coils of described contravariant transformer, described a plurality of dielectric barrier discharge lamps are connected between the common terminal and ground connection that connects of 2 coils of described contravariant transformer.
4. according to the dielectric barrier discharge lamp ignition device of claim 3, it is characterized in that, the other end of 2 coils of described contravariant transformer also interconnects, and described a plurality of dielectric barrier discharge lamps are connected between 2 coil terminals of described contravariant transformer.
5. dielectric barrier discharge lamp ignition device, DC power supply is provided, DC converting is become high-frequency ac output, utilize this high-frequency ac output respectively different dielectric barrier discharge lamps to be lit a lamp, it is characterized in that, 2 coil one ends of the contravariant transformer that described a plurality of inverter circuit comprises interconnect by synchrotrans, and described dielectric barrier discharge lamp is connected with 2 coils of described contravariant transformer by described synchrotrans.
6. according to the dielectric barrier discharge lamp ignition device of claim 5, it is characterized in that described a plurality of inverter circuits comprise respectively: contravariant transformer with 1 coil of input side, 2 coils of outlet side and 3 coils of input side; Be connected with described 1 coil of this contravariant transformer, constitute the inductance composition of this 1 coil and the resonant capacitor of LC resonant circuit; Input side is provided 3 coil outputs of DC power supply and described contravariant transformer, the oscillistor that outlet side is connected with described 1 coil.
7. according to the dielectric barrier discharge lamp ignition device of claim 6, it is characterized in that, one end ground connection of 2 coils of the contravariant transformer that described a plurality of inverter circuit comprised, the other end of described 2 coils is connected with an end of 1 coil of each synchrotrans, 2 coil connections parallel with one another of described each synchrotrans, each dielectric barrier discharge lamp are connected between the other end and ground of 1 coil of described synchrotrans.
8. according to the dielectric barrier discharge lamp ignition device of claim 7, it is characterized in that, an end ground connection of 2 coils of described each synchrotrans, the other end interconnects.
9. dielectric barrier discharge lamp ignition device according to Claim 8 is characterized in that, an end of 2 coils of described each synchrotrans is by switch ground connection to be opened/closed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002374943A JP2004207045A (en) | 2002-12-25 | 2002-12-25 | Dielectric barrier discharge lamp lighting device |
| JP2002374943 | 2002-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1523947A true CN1523947A (en) | 2004-08-25 |
| CN100455157C CN100455157C (en) | 2009-01-21 |
Family
ID=32812817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101177956A Expired - Fee Related CN100455157C (en) | 2002-12-25 | 2003-12-23 | Igniting device for dielectric barrier layer discharge lamp |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2004207045A (en) |
| KR (1) | KR100572658B1 (en) |
| CN (1) | CN100455157C (en) |
| TW (1) | TWI231520B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496451B (en) * | 2006-07-28 | 2012-06-13 | 松下电器产业株式会社 | Discharge lamp operating system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006244972A (en) * | 2005-02-01 | 2006-09-14 | Sanken Electric Co Ltd | Discharge lamp lighting device |
| KR100693823B1 (en) | 2005-10-06 | 2007-03-12 | 리엔 창 일렉트로닉 엔터프라이즈 컴퍼니 리미티드 | A current-balancing circuit for lamps |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4016477A (en) * | 1975-04-29 | 1977-04-05 | Isodyne Inc. | Novel multi-path leakage transformer and inverter ballast |
| US4547705A (en) * | 1982-03-20 | 1985-10-15 | Tdk Corporation | Discharge lamp lightening device |
| US5466992A (en) * | 1992-08-19 | 1995-11-14 | Bruce Industries, Inc. | Inverter ballast circuit featuring current regulation over wide lamp load range |
| JP2002025786A (en) * | 2000-07-12 | 2002-01-25 | Harison Toshiba Lighting Corp | Discharge lamp lighting device |
-
2002
- 2002-12-25 JP JP2002374943A patent/JP2004207045A/en not_active Withdrawn
-
2003
- 2003-12-23 CN CNB2003101177956A patent/CN100455157C/en not_active Expired - Fee Related
- 2003-12-24 KR KR1020030096678A patent/KR100572658B1/en not_active IP Right Cessation
- 2003-12-24 TW TW092136731A patent/TWI231520B/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496451B (en) * | 2006-07-28 | 2012-06-13 | 松下电器产业株式会社 | Discharge lamp operating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100455157C (en) | 2009-01-21 |
| KR20040058071A (en) | 2004-07-03 |
| JP2004207045A (en) | 2004-07-22 |
| KR100572658B1 (en) | 2006-04-24 |
| TWI231520B (en) | 2005-04-21 |
| TW200421402A (en) | 2004-10-16 |
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Granted publication date: 20090121 Termination date: 20100125 |