CN2634789Y - DC fluorescent lamp device - Google Patents
DC fluorescent lamp device Download PDFInfo
- Publication number
- CN2634789Y CN2634789Y CN 03268225 CN03268225U CN2634789Y CN 2634789 Y CN2634789 Y CN 2634789Y CN 03268225 CN03268225 CN 03268225 CN 03268225 U CN03268225 U CN 03268225U CN 2634789 Y CN2634789 Y CN 2634789Y
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- CN
- China
- Prior art keywords
- fluorescent lamp
- circuit
- voltage
- bridge rectifier
- multiplying circuit
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Abstract
The utility model, which relates to a direct-current fluorescent lamp device, comprises a direct-current fluorescent lamp tube and a circuit system.The circuit system comprises a ballast circuit, a bridge type voltage-multiplier rectifier circuit and a filtering constant circuit. The bridge type voltage-multiplier rectifier circuit comprises a bridge type rectifier circuit and a voltage-multiplier circuit. The alternating current passes through the ballast circuit and is added to to the two I/H inputs of the bridge type rectifier circuit. The commutated direct current passes through the anode B at the output of the bridge type voltage-multiplier rectifier circuit and goes into the anode P of the direct-current fluorescent lamp tube, and passes through the cathode K of the lamp tube and flows back to the cathode A of the bridge type voltage-multiplier rectifier circuit. By adopting the voltage multiplier striking circuit and the filtering constant circuit which is used to eliminate the forcible pulse current produced by capacitance ballast, the lamp tube with a lampshade can increase the working temperature of the lamp tube, and overcome the electrophoresis phenomenon, and the striking can be easily realized. The utility model which is reliable in work and high in efficiency is a perfect direct-current fluorescent lamp device.
Description
Technical field
The utility model relates to a kind of lighting device, particularly relates to a kind of DC fluorescent lamp device.
Background technology
Present widely used fluorescent lamp is two kinds of alternating-current fluorescent lamp and DC fluorescent lamp.Alternating-current fluorescent lamp is when work, the continuous checker of polarity of electrode, cause the sputter of filament cathode material, loss strengthens, and influence lamp tube service life, and AC wave is to the electrical equipment serious interference, particularly the noise of Inductive ballast generation and power consumption etc. exist serious defective, in order to overcome above-mentioned defective, people also work out DC fluorescent lamp except that working out electric ballast with the performance of improving alternating-current fluorescent lamp; DC fluorescent lamp has optical efficiency height, flicker free, the absence of audio noise of fluorescent lamp, advantage such as starting resistor is low, the sputtering loss of negative electrode is low on the filament, but it is perfect inadequately to exist circuit design, when starting voltage is low, particularly under the situation that temperature is lower in the winter time, can't guarantee the reliable starter of fluorescent tube, adopt the fluorescent lamp of electric capacity ballast, the hard pulse electric current of moment can cause damage to filament and circuit element.
Goal of the invention
The utility model purpose is to provide a kind of DC fluorescent lamp starter that can make easy, can eliminate or reduce the hard pulse electric current that produced by the electric capacity ballast comparatively perfect DC fluorescent lamp device to influence circuit again.
The purpose of this utility model is achieved in that a kind of DC fluorescent lamp device, comprise DC fluorescent lamp pipe and Circuits System, described Circuits System is by ballasting circuit, bridge rectifier voltage-multiplying circuit and filtering current stabilization circuit are formed, described bridge rectifier voltage-multiplying circuit comprises bridge rectifier and voltage-multiplying circuit, alternating current is added in the I of bridge rectifier by ballasting circuit, H two inputs, direct current after rectification enters the anode P of DC fluorescent lamp pipe by the output head anode B of bridge rectifier voltage-multiplying circuit, flow back to the negative pole A of bridge rectifier voltage-multiplying circuit through the negative electrode K of fluorescent tube, be connected with the filtering current stabilization circuit between anodal G end of described bridge rectifier and the negative pole E end, in the described voltage-multiplying circuit, the forward of its diode is arranged consistent with the direct current direction of bridge rectifier, and with the anode P and the negative electrode K formation direct current passage of DC fluorescent lamp pipe.
Described voltage-multiplying circuit constitutes (3N10) by N diode and N electric capacity, and the highest N that can produce on the filament of DC fluorescent lamp pipe two ends of this circuit is used for starting the DC fluorescent lamp plumber and does doubly to the starting voltage of bridge rectifier output voltage.
Described DC fluorescent lamp pipe, the pipe outside is with a sealed lamp shade within it, and the gas pressure in the fluorescent tube between pipe and the lampshade is less than or equal to the outer air pressure of lampshade.
Be provided with an auxiliary starter utmost point F near the described DC fluorescent lamp tube cathode filament K, be in series with a resistance R between auxiliary starter utmost point F and the bridge rectifier output G
3
Described filtering current stabilization circuit is a capacitor C
1With resistance R
2Be composed in series.
Be in series with ballast resistance R between described cathode filament K and the bridge rectifier voltage-multiplying circuit cathode output end A
1, ballast resistance R
1Value be 0 to 250 Ω.
Described ballasting circuit is by ac capacitor C
0Form.
In the described voltage-multiplying circuit, the quantity of diode and the quantity of electric capacity respectively are 7 (being N=7).
Described DC fluorescent lamp pipe, its shape can be straight shape, annular, cylindricality or spherical form.
The beneficial effects of the utility model are: compared with prior art, eliminate the filtering current stabilization circuit that the electric capacity ballast produces the hard pulse electric current owing to adopt many multiplication of voltages starting circuit and be aided with; Thereby the fluorescent tube of cover upper lamp shade can make the lamp works temperature improve overcomes electrophoresis, has realized that starter is easy, reliable operation, and the efficient height is a kind of comparatively perfect DC fluorescent lamp device.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further detailed description:
Fig. 1 is a circuit diagram of the present utility model;
Fig. 2 is the circuit theory schematic diagram of the utility model embodiment 2;
Fig. 3 is the circuit theory schematic diagram of the utility model embodiment 3;
Fig. 4 is one of structural representation of the utility model embodiment fluorescent tube;
Fig. 5 be the utility model embodiment fluorescent tube structural representation two;
Fig. 6 be the utility model embodiment fluorescent tube structural representation three;
Among the figure, 1 is the bridge rectifier voltage-multiplying circuit; 2 is fluorescent tube; 3 are the filtering current stabilization circuit; 4 is ballasting circuit; 5 is the interior pipe of fluorescent tube; 6 is the lampshade of fluorescent tube; R
1Be ballast resistance; P is the fluorescent tube anode; K is a cathode filament; F is the auxiliary starter utmost point; R
3Be auxiliary starter limit leakage resistance; D
1To D
4Be the bridge rectifier diode; D
5To D
11Be the voltage-multiplying circuit diode; C
2To C
8Be voltage-multiplying circuit electric capacity, C
0Be ballasting circuit electric capacity; C
1Be filtering current stabilization circuit electric capacity; R
2Be filtering current stabilization circuit resistance, the G point is the bridge rectifier cathode output end; The E point is the bridge rectifier cathode output end; B is a bridge rectifier voltage-multiplying circuit output head anode; The A point is a bridge rectifier voltage-multiplying circuit negative pole of output end; I, H are bridge rectifier alternating current input.
Embodiment
Embodiment 1: as Fig. 1, shown in 2, the utility model is achieved in that a kind of DC fluorescent lamp device, comprise DC fluorescent lamp pipe and Circuits System, described Circuits System is by ballasting circuit 4, bridge rectifier voltage-multiplying circuit 1 and filtering current stabilization circuit 3 are formed, described bridge rectifier voltage-multiplying circuit 1 comprises bridge rectifier and voltage-multiplying circuit, alternating current is added in the I of bridge rectifier by ballasting circuit 4, H two inputs, direct current after rectification enters the anode P of DC fluorescent lamp pipe by the output head anode B of bridge rectifier voltage-multiplying circuit, flow back to the negative pole A of bridge rectifier voltage-multiplying circuit through the negative electrode K of fluorescent tube, be connected with filtering current stabilization circuit 3 between anodal G end of described bridge rectifier and the negative pole E end, in the described voltage-multiplying circuit, the forward of its diode is arranged consistent with the direct current direction of bridge rectifier, with the anode P and the negative electrode K formation direct current passage of DC fluorescent lamp pipe 2.
Described voltage-multiplying circuit constitutes (3N10) by N diode and N electric capacity, and the highest N that can produce on the filament of DC fluorescent lamp pipe two ends of this circuit is used for starting the DC fluorescent lamp plumber and does doubly to the starting voltage of bridge rectifier output voltage.
Described DC fluorescent lamp pipe, the pipe outside is with a sealed lamp shade within it, and the gas pressure in the fluorescent tube between pipe and the lampshade is less than or equal to the outer air pressure of lampshade.
Be provided with an auxiliary starter utmost point F near the described DC fluorescent lamp tube cathode filament K, be in series with a resistance R between auxiliary starter utmost point F and the bridge rectifier output head anode G
3
Described filtering current stabilization circuit is a capacitor C
1With resistance R
2Be composed in series, its effect is to eliminate the hard pulse electric current that the electric capacity ballast produces.
Be in series with ballast resistance R between described cathode filament K and the bridge rectifier voltage-multiplying circuit cathode output end A
1, ballast resistance R
1Value be 0 to 250 Ω.
Described ballasting circuit 4 is by ac capacitor C
0Form ac capacitor C
0Play the ballast effect.
Described DC fluorescent lamp pipe 2, its shape can be straight shape, annular, cylindricality or spherical form, as shown in Figs. 4-6.
Embodiment 2: as shown in Figure 2: diode D
1To D
4Be the bridge rectifier of standard, capacitor C
2To C
7With diode D
4(shared) with bridge rectifier, D
5To D
10Constitute positive six times of potential circuits, capacitor C
8, diode D
11, D
1(shared with bridge rectifier) constitutes a negative voltage-multiplying circuit, make the lamp tube ends starting voltage reach as high as 7 multiplication of voltages, single phase alternating current (A.C.) voltage commonly used is 220 volts, direct voltage is about 300 volts after the rectification, starting voltage reaches as high as 2100 volts, this voltage can make the direct starter of fluorescent tube under non-low temperature condition, for make fluorescent tube at-20 o'clock also normal starter; And prolong the cathode filament K life-span, near cathode filament K, set up auxiliary starter utmost point F, auxiliary starter utmost point F and R
3Be connected in series in the G point and constitute auxiliary starting circuit, R
3And auxiliary starter utmost point F makes negative electrode K discharge, R
3It is the above high resistance measurement of resistance 220K Ω, it makes negative electrode K be in the cold-cathode discharge state to the discharge of auxiliary starter utmost point F, cathode filament K electrons emitted arrives anode P rapidly and makes the conducting of fluorescent tube electron stream under the action of high voltage of anode P at this moment, has realized starter; Behind the starter, capacitor C
2To C
8Repid discharge, bridge rectifier voltage-multiplying circuit output B point current potential descends, diode D
5To D
11Constituted the direct current channel of bridge rectifier, cathode filament K transforms into the hot cathode emitting electrons, and the direct current of bridge rectifier makes fluorescent tube normally luminous by fluorescent tube, and promptly circuit is converted into the bridge rectifier operating state automatically behind the starter.
Capacitor C
0Be the ac capacitor of ballasting circuit, it is connected on and plays the ballast effect in the power supply ac circuit, and the size of fluorescent lamp electric current is mainly by capacitor C
0The decision of capacitance size, resistance R
1Be auxiliary ballast resistance, be connected in the DC loop of fluorescent lamp that its effect is the pulsating quantity that has reduced electric current, R
1Value is 0 R
1250 Ω.
Constituted the filtering current stabilization circuit of eliminating the hard pulse electric current between capacitor C 1 and anodal G that is connected to bridge rectifier after resistance R 2 is connected and the negative pole E, capacitor C 1 and resistance R 2 values are C1 4.7u, R2 100 Ω, after being provided with above-mentioned filtering current stabilization circuit, the hard pulse electric current that occurs in the time of can eliminating the work of electric capacity ballasting circuit, reduce filament temperature, improve lamp works voltage, because capacitor C
1Charge constant T=C
1R
2, C
1Value is bigger, and the part lamp current has been shunted in the electric capacity charging, has reduced the lamp current peak value, capacitor C
1Discharge time constant is T=C
1(R
1+ R
2+ R
Fluorescent tube), this numerical value is bigger, therefore makes the electric current of lamp current in the middle of two crest electric currents continuous, and the lamp current value is less at the changing value of Wave crest and wave trough.
In the described DC fluorescent lamp device, DC fluorescent lamp pipe 2 is managed the outside within it and is with a seal glass lampshade, and vacuum-pumping between pipe and the lampshade plays the effect of heat-insulation and heat-preservation in the fluorescent tube, to improve lamp works temperature (more than 30 degrees centigrade), reach the electrophoresis of eliminating fluorescent tube.
Embodiment 3: as shown in Figure 3, in the bridge rectifier voltage-multiplying circuit described in the utility model, voltage-multiplying circuit can be arranged on bridge rectifier negative pole one side, connects with bridge rectifier alternating current input I, H and negative pole E, and voltage-multiplying circuit negative pole degree A passes through R
1K connects with tube cathode, and all the other conditions and effect are described with embodiment 1.
Claims (9)
1, a kind of DC fluorescent lamp device, comprise DC fluorescent lamp pipe and Circuits System, it is characterized in that: described Circuits System is by ballasting circuit (4), bridge rectifier voltage-multiplying circuit (1) and filtering current stabilization circuit (3) are formed, described bridge rectifier voltage-multiplying circuit comprises bridge rectifier and voltage-multiplying circuit, after alternating current enters the bridge rectifier voltage-multiplying circuit by ballasting circuit, enter the anode of DC fluorescent lamp pipe (2) by the output head anode (B) of bridge rectifier voltage-multiplying circuit through the direct current of rectification, flow back to the negative pole (A) of bridge rectifier voltage-multiplying circuit through the negative electrode (K) of fluorescent tube, be connected with the filtering current stabilization circuit between described bridge rectifier positive pole (G end) and the negative pole (E end), in the described voltage-multiplying circuit, the forward of its diode is arranged consistent with the direct current direction of bridge rectifier, and with the anode (P) and negative electrode (K) the formation direct current passage of DC fluorescent lamp pipe.
2, DC fluorescent lamp device according to claim 1, it is characterized in that: described voltage-multiplying circuit constitutes (3 N 10) by N diode and N electric capacity, the highest N that can produce on the filament of DC fluorescent lamp pipe two ends of this circuit is used for starting the DC fluorescent lamp plumber and does doubly to the starting voltage of bridge rectifier output voltage.
3, DC fluorescent lamp device according to claim 1 is characterized in that: described DC fluorescent lamp pipe, and the pipe outside is with a sealed lamp shade within it, and the gas pressure in the fluorescent tube between pipe and the lampshade is less than or equal to the outer air pressure of lampshade.
4, according to claim 1 or 3 described DC fluorescent lamp devices, it is characterized in that: be provided with an auxiliary starter utmost point (F) near the described DC fluorescent lamp tube cathode filament (K), be in series with a resistance (R between the auxiliary starter utmost point (F) and the bridge rectifier output (G)
3).
5, DC fluorescent lamp device according to claim 1 is characterized in that: described filtering current stabilization circuit (3) is electric capacity (C
1) and resistance (R
2) be composed in series.
6, DC fluorescent lamp device according to claim 1 is characterized in that: be in series with ballast resistance (R between described cathode filament (K) and the bridge rectifier voltage-multiplying circuit cathode output end (A)
1), ballast resistance (R
1) value be 0 to 250 Ω.
7, DC fluorescent lamp device according to claim 1 is characterized in that: described ballasting circuit (4) is by ac capacitor (C
0) form.
8, according to the described DC fluorescent lamp device of claim 2, it is characterized in that: in the described voltage-multiplying circuit, the quantity of diode and the quantity of electric capacity respectively are 7 (being N=7).
9, DC fluorescent lamp device according to claim 3 is characterized in that: described DC fluorescent lamp pipe (2), its shape can be straight shape, annular, cylindricality or spherical form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03268225 CN2634789Y (en) | 2003-08-04 | 2003-08-04 | DC fluorescent lamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03268225 CN2634789Y (en) | 2003-08-04 | 2003-08-04 | DC fluorescent lamp device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2634789Y true CN2634789Y (en) | 2004-08-18 |
Family
ID=34299265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03268225 Expired - Fee Related CN2634789Y (en) | 2003-08-04 | 2003-08-04 | DC fluorescent lamp device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2634789Y (en) |
-
2003
- 2003-08-04 CN CN 03268225 patent/CN2634789Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |