CN2444378Y - Flash device for fluorescent lamp - Google Patents

Abstract

The utility model relates to a flash device for fluorescent lamps, which comprises a rectification filter circuit 1, an oscillation and drive circuit 2, a flash control circuit 3, a lamp filament heating circuit 4 and a lamp tube ignition circuit 5. The device reasonably heats lamp filaments of a fluorescent lamp tube, and regularly controls the ignition of the fluorescent lamp tube to cause the fluorescent lamp tube to flash and glow in a long-term, stable and high-frequency mode. The utility model overcomes the defect that the fluorescent lamp tube has low switch lifetime and is only used in the field of continuous lighting. The flash device for fluorescent lamps can be widely used in the lamp light flash fields of neon lamps, advertisement lamps, etc.

Description

The fluorescent lamp flashing device

The utility model relates to a kind of electron flare device, particularly a kind of fluorescent lamp flashing device.

Nineteen thirties is the invention fluorescent lamp, and trichromatic fluorescent light tube and electric ballast are very ripe over nearly one, 20 year, has improved the operating efficiency of fluorescent lamp widely, has also enriched its color.But because its switch life is short, only be used in the continuous illumination aspect for a long time, fail to use in light flash fields such as neon light, advertising lamps.

The purpose of this utility model provides a kind of fluorescent lamp flashing device that can overcome above-mentioned shortcoming, and the fluorescent lamp of shades of colour, different shape, various power can be operated under the state of high flicker frequency steadily in the long term.

The utility model comprises current rectifying and wave filtering circuit 1, vibration and drive circuit 2, it is characterized in that: the utility model also comprises flicker control circuit 3, filament heating circuit 4 and fluorescent tube ignition circuit 5; 4 liang of outputs of filament heating circuit are connected in parallel with each filament binding post of fluorescent tube F two ends respectively, and promptly every pair of filament binding post got an end and the single-ended corresponding connection of the output of filament heating circuit 4 respectively; 5 liang of outputs of fluorescent tube ignition circuit also are connected in parallel with the another one filament binding post at fluorescent tube F two ends respectively, and promptly every pair of filament binding post got the other end and the single-ended corresponding connection of the output of fluorescent tube ignition circuit 5 respectively; Flicker control circuit 3 alternately drives filament heating circuit 4 and fluorescent tube ignition circuit 5 by vibration and drive circuit 2 by predetermined sequential relationship, is changing the operating state of fluorescent tube (F).

Flicker control circuit 3 described in the utility model, filament heating circuit 4 and fluorescent tube ignition circuit 5 can be respectively to get an end respectively to be connected in parallel one and to start capacitor C in fluorescent tube F two filament binding posts ₂Switch bubble S with a bimetal leaf and tungsten filament heating; The free end of getting the filament binding post capacitance C that is connected in series ₁Back and vibration are connected to current rectifying and wave filtering circuit 1 cathode output end with the electrode input end of drive circuit 2, the free end of getting another filament binding post again is connected in series and is connected to the cathode output end of vibration and drive circuit 2 behind the L of ballast inductance, and vibration is connected with current rectifying and wave filtering circuit 1 cathode output end with the public input of the negative pole of drive circuit 2.

Flicker control circuit 3 described in the utility model, filament heating circuit 4 and fluorescent tube ignition circuit 5 can be respectively to get an end respectively to be connected in parallel one and to start capacitor C in fluorescent tube F two filament binding posts ₂Series circuit with one group of contact of a resistance R and a control relay J is connected in parallel again, and the input of relay J is connected with general timing switch external circuit; The free end of the filament binding post capacitance C that is connected in series ₁Back and vibration are connected to current rectifying and wave filtering circuit 1 cathode output end with the electrode input end of drive circuit 2, the free end of getting another filament binding post again is connected in series and is connected to the cathode output end of vibration and drive circuit 2 behind the L of ballast inductance, and vibration is connected with current rectifying and wave filtering circuit 1 cathode output end with the public input of the negative pole of drive circuit 2.

Flicker control circuit 3 described in the utility model, filament heating circuit 4 and fluorescent tube ignition circuit 5 can be respectively to get an end respectively to be connected in parallel one and to start capacitor C in fluorescent tube F two filament binding posts ₂The free end of getting the filament binding post capacitance C that is connected in series ₁Back and vibration are connected to the current rectifying and wave filtering circuit cathode output end with the electrode input end of drive circuit 2, the free end of getting another filament binding post again is connected in series and is connected to the cathode output end of vibration and drive circuit 2 behind the L of ballast inductance, vibration is connected with current rectifying and wave filtering circuit 1 cathode output end with the public input of the negative pole of drive circuit 2, oscillation frequency control circuit H by changing the operating frequency of vibration and drive circuit (2), changes the operating state of fluorescent tube F under the ordered control of universal switch external circuit.

Flicker control circuit 3 described in the utility model, filament heating circuit 4 and fluorescent tube ignition circuit 5 can be to give the power supply of fluorescent tube F two filaments by power supply through transformer T step-down, the corresponding secondary coil independently of each filament, two secondary coils are connected in parallel with two filament links respectively, the primary coil one end serial connection capacitance C of transformer T ₃Back and vibration and drive circuit 2 _AElectrode input end be connected to current rectifying and wave filtering circuit 1 cathode output end together, the other end ballast inductance L that is connected in series ₁After be connected to the vibration with drive circuit 2 _ACathode output end, the vibration with drive circuit 2 _AThe public input of negative pole be connected with current rectifying and wave filtering circuit 1 cathode output end; Get the end startup capacitor C that is connected in parallel respectively for every pair in two pair of wire connection terminals ₂, the end capacitance C that is connected in series wherein ₁After be connected to current rectifying and wave filtering circuit 1 cathode output end, the other end ballast inductance L that is connected in series ₂After be connected to the vibration with drive circuit 2 _BCathode output end, the vibration with drive circuit 2 _BThe public input of negative pole be connected with current rectifying and wave filtering circuit 1 cathode output end.Signal Spacing reaches alternately, and control circuit G controls two vibrations and drive circuits 2 respectively under the ordered control of universal switch external circuit _AWith 2 _BAlternation, the operating state of change fluorescent tube F.

Signal Spacing described in the utility model reaches alternately control circuit G, by R ₁, R ₂, D ₁, G ₅, G ₆, G ₇Connect to form R ₁A termination power positive pole, the other end connects G ₇Collector electrode and D ₁Positive pole, D ₁Negative pole connect G ₆Base stage, G ₆Collector electrode connect G ₄Base stage, G ₆Emitter connect power cathode, G ₇Emitter connects G ₅Base stage, G ₅Collector electrode connect G ₂Base stage, G ₅Emitter connect power cathode, R ₂Be serially connected with G ₇The light-emitting diode positive pole, G ₇Two inputs be connected with the universal switch external circuit.

Oscillation frequency control circuit H described in the utility model is by IC, G ₃, C _T', C _T, R _TConnect to form; Connect logically behind 1,2, the 4 terminal short circuits of IC, 3 terminals are unsettled, and 5 terminals connect C _T' and C _TAn end, C _T' the other end connect G ₃An output, G ₃Another output termination logically, G ₃Two input a, b be connected C with general timing switch external circuit _TAnother termination logically, 6 terminals connect R _TAn end, R _TAnother termination logically, 7 terminals connect logically, 8, terminal connects R simultaneously ₁, C ₅, D ₄, 9,10 terminals are connected with the parallel connection of primary windings of transformer T, and 11,12 terminals connect 8 terminals, and 13,14 terminal short circuits connect logically behind 15, the 16 terminal short circuits.

The utility model has the advantages that: control circuit is simple, variation and cost are low; Flicker frequency height, easy to use and be widely used replaces can saving a large amount of electric energy after the incandescent lamp flicker.

Below in conjunction with accompanying drawing, embodiment of the present utility model is described:

Accompanying drawing 1 is the circuit block diagram of the utility model embodiment

Accompanying drawing 2 is the uncontrolled type circuit diagram of the utility model embodiment

Accompanying drawing 3 is the simple control I type circuit diagram of the utility model embodiment

Accompanying drawing 4 is the simple control II type circuit diagram of the utility model embodiment

Accompanying drawing 5 is the typical control type circuit diagram of the utility model embodiment

Accompanying drawing 6 is the typical control type circuit theory diagrams of the utility model embodiment

Accompanying drawing 7 is the simple control II type circuit theory diagrams of the utility model embodiment

Square frame 1 is a current rectifying and wave filtering circuit in the accompanying drawing 1, and square frame 2 is vibration and drive circuit, and square frame 3 is fluorescent tube for filament heating circuit, square frame 5 for fluorescent tube ignition circuit, square frame F for flicker control circuit, square frame 4.The basic design that has disclosed the utility model embodiment among the figure just is based on the operation principle of electron tube, as long as rationally heat tube filament, make it that hot electron is provided at any time, guaranteeing to power up is that conducting is lighted, and can increase substantially switching frequency and prolonging lamp tube service life like this.Also described the fundamental relation between each modular circuit among the figure, these circuit can have many variations and difference in an embodiment, but its basic function remains therein.

Accompanying drawing 2 illustrated embodiments are to start capacitor C ₂The switch bubble S of a two ends bimetal leaf in parallel and tungsten filament heating.Bimetal leaf is connected during beginning, the heating of aliving on the tungsten filament, and electric current is also given two filament heating of fluorescent tube simultaneously, because the tungsten filament both end voltage is lower, so at this moment fluorescent tube does not work, bimetal leaf heated bending after several seconds, when leaving the contact, fluorescent tube is at C ₂Light under the high voltage effect at two ends.After this, tungsten filament and bimetal leaf among the S cool off gradually, and final bimetal leaf joins with the contact again, goes round and begins again like this, and fluorescent lamp one bright secretly glimmers, and flicker frequency depends on the characteristic of S.

Accompanying drawing 3 illustrated embodiments are to start capacitor C ₂The one group of contact of a two ends relay J in parallel and the series circuit of resistance R.Resistance R plays protection relay contact and metering function.Relay is optional with electromagnetic relay, dry-reed relay, solid state relay or the like.By the logical of external circuit control relay and disconnected, fluorescent tube did not work when relay was connected, and heated the two ends filament simultaneously, and fluorescent tube was lighted when relay disconnected.This device is fit to the lower occasion of flicker frequency.

Accompanying drawing 4 illustrated embodiments are by the frequency of oscillation of external circuit control vibration with drive circuit, when being operated in upper frequency, and C ₂Capacitive reactance is less, and L induction reactance is bigger, C ₂On high frequency voltage less, fluorescent lamp does not work, filament is in heated condition.When external circuit control made the frequency of oscillation of vibration and drive circuit return to lower normal frequency, fluorescent tube was lighted.This flashing device can be used under the higher flicker frequency.

Accompanying drawing 5 illustrated embodiments are typical control type circuit, and the filament of fluorescent tube F is heated by independent circuit, also can be powered separately through the transformer step-down by power supply, but each filament must have an independently secondary coil.As shown in the figure, heat two filaments respectively, light fluorescent lamp and still adopt vibration and drive circuit by two secondary coils of transformer T.C ₃, C ₁Be capacitance, C ₂Be to start electric capacity, L ₁, L ₂, be the ballast inductance.Control vibration and drive circuit 2 by the control signal that external circuit comes respectively through isolating and replacing control circuit G _AWith vibration and drive circuit 2 _B, make its alternation.When vibration and drive circuit 2 _ADuring work, the heating of the filament of fluorescent tube F, fluorescent tube does not work.When vibration and drive circuit 2 _BDuring work, fluorescent tube F lights, and filament then stops outer heating.This flashing device is fit to fast and flicker at a slow speed changes.

Accompanying drawing 6 is concrete enforcement circuit of accompanying drawing 5.When not having the control signal input, optoisolator G ₇Do not work, a point no-voltage, at this moment the positive source behind the rectifying and wave-filtering is through resistance R ₁(about 200K Ω) and diode D ₁Pass through triode G again to the b point ₆Base stage and emitter to power cathode, produce about 1.5mA electric current, make G ₆Saturation conduction forces triode G ₃, G ₄Do not work, fluorescent lamp does not work, at this moment triode G ₁, G ₂Operate as normal has alternating current to pass through capacitor C ₃, the primary coil of transformer T and inductance L ₁Deng.The secondary coil of transformer T is given two filament heating of fluorescent tube respectively.When the dc control signal of about 5V is added in photoelectricity isolated tube G ₇Input the time, photoelectricity isolated tube G ₇The triode saturation conduction.Pass through resistance R ₁Electric current inject triode G by a point ₅Base stage, G ₅Be in saturation conduction, force G ₁, G ₂Do not work, the filament heating of fluorescent tube stops.Simultaneously because triode G ₆The b point can not get voltage and be in cut-off state, and triode G ₃, G ₄Recover operate as normal, make fluorescent lamp lighting.

The first half circuit of accompanying drawing 6 is filament heating circuits of fluorescent lamp, and the latter half circuit is the ignition circuit of fluorescent lamp.Control signal if 0 or 5V on to change be the dark or bright of may command fluorescent lamp.All diodes all are IN4007 in the accompanying drawing 6; G ₁, G ₂, G ₃, G ₄Be DK55; G ₅, G ₆Be 3DK7; G ₇Be 3EDK62G; D ₄, D ₅Be DB3; Fluorescent tube F is 40W.

Accompanying drawing 7 is concrete enforcement circuit of accompanying drawing 4.As photocoupler G ₃During no input current, G ₃Output for the open circuit, timing capacitor C _T' inoperative, this moment, the internal oscillator frequency of integrated circuit (IC) was f=1.1/ (R _TC _T) ≈ 100KHz, and alternately export positive pulse when two output 9 pin of IC and 10 pin, so then become 50KHz by the output of pulse transformer T, because of the normal frequency height of frequency, ballast inductance L impedance is bigger, and starts capacitor C ₂Capacitive reactance diminish, terminal voltage is also little, deficiency is so that fluorescent tube is lighted, electric current only makes filament heating.As photocoupler G ₃A, b end input 5～10mA electric current, be the bidirectional triode thyristor conducting, G ₃The output short circuit, C at this moment _TWith C _T' becoming parallel connection, the capabilities double of timing capacitor so frequency of oscillation reduces by half, is about 50KHz, and output frequency should be 25KHz mutually, reduces to normal frequency, at this moment L and C ₂Be near resonance condition C ₂On voltage very high fluorescent tube is lighted.

All diodes all are IN4007 in the accompanying drawing 7; D4, D5, D6, D7, D8 are the 12V voltage-stabiliser tube, C ₃, C ₄Electrolytic capacitor filter 250V/10 μ, C ₅Electrolytic capacitor filter 25V/10 μ, R ₁Dropping resistor 3K Ω, R ₂, R ₃, R ₄Protective resistance 20 Ω, C ₁Capacitance 400V/0.1 μ F, C ₂Start electric capacity 630V/4700PF, L ballast inductance, G ₁, G ₂Be the IRF830 field effect transistor, IC is integrated circuit TL494, G ₃Be two-way photocoupler TLP525G, pulse transformer during T, the frequency of oscillation f=1.1/ (R of IC _TC _T) or f=1.1/R _T(C _T'+C _T), RT=5.1K Ω is a timing resistor, C _T, C _T' to be all 2200PF be timing capacitor, F is the fluorescent tube of 40W.

Claims (7)

1. a fluorescent lamp flashing device comprises current rectifying and wave filtering circuit (1), vibration and drive circuit (2), it is characterized in that: described device also comprises flicker control circuit (3), filament heating circuit (4) and fluorescent tube ignition circuit (5); Filament heating circuit (4) two outputs are connected in parallel with each filament binding post of fluorescent tube (F) two ends respectively, and promptly every pair of filament binding post got an end and the single-ended corresponding connection of the output of filament heating circuit (4) respectively; Fluorescent tube ignition circuit (5) two outputs also are connected in parallel with the another one filament binding post at fluorescent tube (F) two ends respectively, and promptly every pair of filament binding post got the other end and the single-ended corresponding connection of the output of fluorescent tube ignition circuit (5) respectively; Flicker control circuit (3) is alternately controlled the operating state that filament heating circuit (4) and fluorescent tube ignition circuit (5) are changing fluorescent tube (F) by vibration and drive circuit (2) by the sequential relationship of being scheduled to.

2. fluorescent lamp flashing device according to claim 1 is characterized in that: described flicker control circuit (3), filament heating circuit (4) and fluorescent tube ignition circuit (5) can be respectively to get an end respectively to be connected in parallel one and to start electric capacity (C in fluorescent tube (F) two filament binding posts ₂) and the switch bubble (S) of bimetal leaf and tungsten filament heating; The free end of the getting filament binding post capacitance (C that is connected in series ₁) back and vibration be connected to current rectifying and wave filtering circuit (1) cathode output end with the electrode input end of drive circuit (2), the free end of getting another filament binding post again is connected in series and is connected to the cathode output end of vibration and drive circuit (2) behind the ballast inductance (L), and vibration is connected with current rectifying and wave filtering circuit (1) cathode output end with the public input of negative pole of drive circuit (2).

3. fluorescent lamp flashing device according to claim 1 is characterized in that: described flicker control circuit (3), filament heating circuit (4) and fluorescent tube ignition circuit (5) can be respectively to get the be connected in parallel series circuit of a resistance (R) and a control relay (3) and one of an end respectively to start electric capacity (C in fluorescent tube (F) two filament binding posts ₂), the input of relay is connected with general timing switch external circuit; Be connected in series capacitance (C1) back and the vibration of the free end of a filament binding post is connected to current rectifying and wave filtering circuit (1) cathode output end with the electrode input end of drive circuit (2), the free end of getting another filament binding post again is connected in series and is connected to the cathode output end of vibration and drive circuit (2) behind the ballast inductance (L), and vibration is connected with current rectifying and wave filtering circuit (1) cathode output end with the public input of negative pole of drive circuit (2).

4. fluorescent lamp flashing device according to claim 1 is characterized in that: described flicker control circuit (3), filament heating circuit (4) and fluorescent tube ignition circuit (5) can be respectively to get an end respectively to be connected in parallel one and to start electric capacity (C in fluorescent tube (F) two filament binding posts ₂); The free end of the getting filament binding post capacitance (C that is connected in series ₁) back and vibration be connected to the current rectifying and wave filtering circuit cathode output end with the electrode input end of drive circuit (2), the free end of getting another filament binding post again is connected in series and is connected to the cathode output end of vibration and drive circuit (2) behind the ballast inductance (L), vibration is connected with current rectifying and wave filtering circuit (1) cathode output end with the public input of negative pole of drive circuit (2), oscillation frequency control circuit (H) is by changing the operating frequency of vibration and drive circuit (2), the operating state of control fluorescent tube (F).

5. fluorescent lamp flashing device according to claim 1, it is characterized in that: described flicker control circuit (3), filament heating circuit (4) and fluorescent tube ignition circuit (5) can be to give the power supply of fluorescent tube (F) two filaments by power supply through transformer (T) step-down, the corresponding secondary coil independently of each filament, two secondary coils are connected in parallel with two filament links respectively, the primary coil one end serial connection capacitance (C of transformer (T) ₃) back and vibration and drive circuit (2 _A) electrode input end be connected to current rectifying and wave filtering circuit (1) cathode output end together, the other end ballast inductance (L that is connected in series ₁) after be connected to the vibration and the cathode output end of drive circuit (A), vibration and drive circuit (2 _A) the public input of negative pole be connected with current rectifying and wave filtering circuit (1) cathode output end; Get an end respectively and be connected in parallel and start electric capacity (C for every pair in two pair of wire connection terminals ₂), the end capacitance (C that is connected in series wherein ₁) after be connected to current rectifying and wave filtering circuit (1) cathode output end, the other end ballast inductance (L that is connected in series ₂) after be connected to the vibration with drive circuit (2 _B) cathode output end, the vibration with drive circuit (2 _B) the public input of negative pole be connected with current rectifying and wave filtering circuit (1) cathode output end.Two vibrations and drive circuit (2 _A) and (2 _B) by Signal Spacing and alternately control circuit (G) control respectively, alternation.

6. fluorescent lamp flashing device according to claim 5 is characterized in that: described Signal Spacing reaches alternately control circuit (G), by (R ₁), (R ₂), (D ₁), (G ₅), (G ₆), (G ₇) connect to form (R ₁) a termination power positive pole, the other end connects (G ₇) collector electrode and (D ₁) positive pole, (D ₁) negative pole connect (G ₆) base stage, (G ₆) collector electrode connect (G ₄) base stage, (G ₆) emitter connect power cathode, (G ₇) emitter connection (G ₅) base stage, (G ₅) collector electrode connect (G ₂) base stage, (G ₅) emitter connect power cathode, (R ₂) be serially connected with (G ₇) the light-emitting diode positive pole, (G ₇) two inputs be connected with general timing switch external circuit.

7. fluorescent lamp flashing device according to claim 4 is characterized in that: described oscillation frequency control circuit (H) is by (IC), (G ₃), (C _T'), (C _T), (R _T) connect to form; (IC) connect logically behind 1,2, the 4 terminal short circuits, 3 terminals are unsettled, the connection of 5 terminals (CT ') and (C _T) an end, (C _T') the other end connect (G ₃) an output, (G ₃) another output termination logically, (G ₃) two input (a) and (b) be connected (C with general timing switch external circuit _T) another termination logically, 6 terminals connect (R _T) an end, (R _T) another termination logically, 7 terminals connect logically, 8, terminal connects (R simultaneously ₁), (C ₅), (D ₄), 9,10 terminals are connected with the parallel connection of primary windings of transformer (T), and 11,12 terminals connect 8 terminals, and 13,14 terminal short circuits connect logically behind 15, the 16 terminal short circuits.

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