CN2361052Y - Integrated multi-lamp system electronic energy saving lamp - Google Patents

Abstract

The utility model relates to an integrated multi-lamp system electronic energy saving lamp, which is an electronic energy-saving lamp for lighting. LampS with same or different power can no be turned on simultaneously with an electronic ballast, let alone respective switching control of each lamp. The integrated multi-lamp system electronic energy saving lamp is characterized in that a capacitor is connected with an inductor in series through the filaments at both ends of a fluorescent tube in an insulating plastic shell which is provided with a private or general lamp holder, and the capacitor and the inductor form resonance with the oscillation frequency of a separate excitation electronic ballast; any integrated multi-lamp system electronic energy saving lamp with same or different power can be turned on simultaneously with one separate excitation electronic ballast, and can form respective switching control to each lamp.

Description

Concentrating type multi-lamp system electronic energy-saving lamp

The utility model relates to a kind of illuminating electronic energy-saving fluorescent, is commonly called as electricity-saving lamp; This electricity-saving lamp can be lighted a lamp arbitrarily of identical or different power respectively or simultaneously by an independent vibration independent-excited electric ballast.

Present known electricity-saving lamp is made up of ballast and fluorescent tube; In the inductance ballast energy-saving lamp circuit, the end of ballast L is connected with power supply, and the other end connects the another terminal of power supply by starter S and other end filament through Filament of fluorescent lamp.When power frequency supply was applied to the two ends of starter S by L and filament, gas ionization build-up of luminance in the starter was to bimetal leaf heating in steeping, make the closing of contact, there is this moment big electric current to flow through L and filament, to the filament heating, when filament possesses the emitting electrons ability (common t＞0.4s); Because starter steeps the interior closing of contact and short circuit, gas loses electric field and stops ionization, also stopped heating to bimetal leaf, two contacts disconnect rapidly, and respond to high voltage among the ballast L this moment, makes the fluorescent tube ionization puncture, discharge is lighted, thereafter, L works fluorescent tube to fluorescent tube current-limiting under rated current.The lamp arbitrarily that this circuit is lighted two above different capacities simultaneously with a ballast is impossible, the switch control respectively of more impossible every lamp.

In self-oscillation ballast electronic energy-saving lamp circuit, form full-wave bridge rectifier circuit with diode, the 220V power current is become the sinuous pulsation direct current, through capacitor filtering, output is flowed than galvanic current.By R ₁C ₁And bidirectional diode BD forms starting circuit; When rigidly connecting energize, direct current is through R ₁To C ₁C is worked as in charging ₂When rising to the puncture voltage of bidirectional diode BD, BD conducting, C ₁Through bidirectional diode BD to BG ₂Base stage and emission interpolar discharge, BG ₂Conducting, direct current is through C ₃, F, L, N ₃BG ₂To C ₃Charging has electric current to flow through the elementary N of pulse transformer ₃, then secondary N ₁N ₂In induce the opposite electromotive force of both direction, BG ₂End BG ₁Conducting; The C that be recharged this moment ₃Through BG ₁, N ₃, L, F discharge owing to pass through N ₃The sense of current and C ₃N flows through during charging ₃Current opposite in direction, at N ₁N ₂In induce rightabout electromotive force again, make BG ₁End BG ₂Conducting repeats said process, and circuit is self oscillating regime.Frequency of oscillation F ₀, by pulse transformer N ₁, N ₂, N ₃And L, lamp internal resistance R _F, C ₃And BG ₁(BG ₂) switching characteristic decision.Work as F ₀One regularly, and the size of L determines the size of lamp power again.The size of lamp power will influence capacitor C again ₃The reactance of charging and discharging circuit, the speed that influence discharges and recharges, thus influence self-oscillatory frequency.As L and R _FOne regularly, and the variation of frequency will influence the variation of lamp power again.When lighting any lamp of different capacity simultaneously with a ballast, self-oscillatory condition is very complicated, and is extremely unstable.Whole system can't be worked.Particularly with each single lamp respectively switch control be impossible.

The purpose of this utility model provides a kind of electronic energy-saving lamp, under the situation of lamp power and ballast power coupling, (is P _Always〉=P ₁+ P ₂+ ... P _nThe time), can light a lamp arbitrarily of identical or different power simultaneously with a ballast, and can the switch control respectively of every lamp all not involved influence mutually, working stability is reliable.

The purpose of this utility model is to realize like this; Circuit is made up of independent vibration independent-excited electric ballast and circuit for lamp two major parts; Circuit for lamp is L, C serial resonant circuit.Mould in the shell at the electricity-saving lamp that universal standard lamp holder is housed, high frequency choke coil L, electric capacity, C and fluorescent tube F polyphone are arranged, high frequency choke coil L is the ballast inductance of this fluorescent tube, and the inductance value of suitably selecting L is to mate different fluorescent tubes; Be connected to the capacitor C of lamp tube ends, through lamp tube ends filament and L polyphone.Select different C, make the LC resonance frequency a little more than or equal the frequency of oscillation of independent-excited electric ballast.The capacitor C of in circuit for lamp, contacting _F, and make C _F〉=C, when this lamp is misapplied in the 220V power frequency supply, C _FShield.In load circuit, the independent or number lamp of every lamp also connects back serial connection K switch, to realize respectively or to concentrate the purpose that many lamps are controlled.

In ballast circuit, be connected into bridge rectifier with diode, the 220V power current is rectified into a pulsation sinusoidal current, through two dielectric capacitance C ₃, C ₄The filtering of polyphone back, output one are flowed than galvanic current.DC power supply for push-pull inverter circuit.

Transformer B ₁With the step-down of 220V power frequency supply, be the working power of IC through rectification, filtering, voltage stabilizing output direct current 12V.

4,8 pin of general purpose I CNE555 connect 12 volts of positive sources, and 1 pin connects negative pole, the 5 pin capacity earth of contacting, 3 foot meridian capacitor C ₂Meet pulse transformer B ₂An elementary end, elementary other end ground connection, 7 pin of IC are through resistance R ₁Connect positive source, again through R ₂Connect 2,6 pin of IC, again through charge and discharge capacitance C ₁Ground connection is formed conventional multivibrator circuit.Suitably select R ₁+ R ₂With C ₁Making frequency of oscillation is 40KHz, makes R ₂＞＞R ₁, making IC3 pin output duty cycle is 50% square wave current.

Pulse transformer B ₂Secondary be equal turn numbers, two windings of independence that direction is opposite; Two windings are connected in power switch transistor BG through current-limiting resistance respectively ₁, BG ₂Ground level and emitter between, drive BG respectively ₁, BG ₂The one after the other conducting with end, with filter capacitor C ₁, C ₂Form independent-excited half-bridge push-pull inverter circuit.

The circuit energized, the IC starting of oscillation, 3 pin output frequency 40KHz, duty ratio is 50% square wave current, drives BG respectively through the pulse transformer ₁, BG ₂Conducting with end.If BG ₁Conducting BG ₂When ending, electric current is arranged through BG ₁, L, F, to C ₄Charging, C simultaneously ₃Through BG ₁, F, L the discharge, work as BG ₁Conducting, BG ₁When ending, electric current is arranged through C ₃, F, L, BG ₂To C ₃Charging, C simultaneously ₄Through F, L, BG ₂Discharge.It discharges and recharges frequency is BG ₁(BG ₂) switching frequency, change power and the quantity of lamp F, only change the size of charging and discharging currents, it discharges and recharges frequency and still is BG ₁(BG ₂) switching frequency, i.e. the frequency of oscillation of IC.

When rigidly connecting energize when Closing Switch K (or), the internal resistance RF of F is very big, is regarded as open circuit, and L contacts with C through the filament of FR, has high-frequency current to flow through, and makes LC that resonance is in BG ₁(BG ₂) switching frequency is the IC frequency of oscillation, the LC reactance is very little, has big electric current to flow through, and with the filament heating, the high pressure on the C acts on the F two ends simultaneously, the F ionic discharge is lighted, F internal resistance R _FDescend, with the C bypass, the LC off resonance, L plays metering function.Its operating frequency still is BG ₁(BG ₂) switching frequency, the i.e. frequency of oscillation of IC.

Independent vibration independent-excited electric ballast and load circuit be two major parts independently each other, and the IC frequency of oscillation is by R ₁, C ₁Decision, the resonance frequency of circuit for lamp is determined that by LC lamp power is by L and R _FDecision, no matter lamp power and number change between lamp and the IC, between lamp and the lamp, all do not involve influence mutually, realize lighting with a ballast purpose of a lamp arbitrarily of identical or different power in multi-lamp system, and can implement switch to every lamp respectively and control.

In the such scheme, electric ballast belongs to the separated exciting electric ballast, and energy-saving lamp circuit is only by fluorescent tube F, and inductance L and electric capacity are formed, and has not only simplified production technology but also has improved the reliability of lamp, thereby reduced production cost and cost of use effectively.Especially in the need small-power, the single lamp of big quantity is concentrated more apparent its economy and applicability when using.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is traditional Inductive ballast fluorescent lamp schematic diagram.

Fig. 2 is known auto-excitation type electric ballast schematic diagram.

Fig. 3 is a concentrating type multi-lamp system electronic energy-saving lamp schematic diagram.

Fig. 4 is first kind of independent-excited electric ballast schematic diagram of the utility model adapted.

Fig. 5 is second kind of independent-excited electric ballast schematic diagram of the utility model adapted.

In Fig. 3, L is that high frequency choke coil and resonant capacitance C contact through fluorescent tube F two ends filament.Make LC resonance in 40KHz or a little more than 40KHz.After the lamp starting, L is this fluorescent tube ballast inductance; Suitably select L, lamp is worked under rated power.

In Fig. 4,4 diode D _1-4Be connected into bridge rectifier, through C ₃C ₄Filtering with 220V industrial frequency AC rectification output 310V direct current, is BG ₁BG ₂Power supply.Transformer B ₁With the step-down of 220V industrial frequency AC, through D ₅D ₆Full-wave rectification, filtering voltage regulation, exporting stable direct current 12V voltage is the IC power supply.4,8 pin of ICNE555 connect positive source, 1 pin connect negative pole (), 5 foot meridian capacitor ground connection.Positive source is through R ₁Connect with the IC7 pin, again through R ₂Connect 2,6 pin, charge and discharge capacitance C ₁Be connected between 2,6 pin and ground.IC3 foot meridian capacitor C ₂With pulse transformer B ₂An elementary end connects, other end ground connection.B ₂Secondary be two equal turn numbers, the independent winding that direction is opposite is respectively through capacitance-resistance networking and power switch pipe BG ₁BG ₂Base stage be connected with emitter.Power switch pipe BG ₂Current collection level and BG ₁Behind the emitter polyphone, BG ₁Collector electrode connect the positive pole of 310V power supply, BG ₂Emitter connects negative pole.Mid point A behind the two switching tubes polyphone is with C ₃C ₄Mid point B behind the polyphone is the two-terminal of output circuit.

In Fig. 5, wire frame 1 suppresses circuit for common-mode noise, and is identical by two numbers of turn that are around in the same magnetic core, around cooperating C to opposite winding ₁C ₂Form.

Wire frame 2 is AD conversion and passive power factor and lamp current crest coefficient benefit reward network.D _1-4Form bridge rectifier, the 220V power frequency supply rectification that will suppress circuit output from common-mode noise is the sinuous pulsation electric current.D _5-8Polyphone back negative pole connects power positive end, and positive pole connects power supply negative terminal, C ₃Positive pole connects the source anode, and negative pole meets D ₇D ₈The mid point that connects, C ₄Negative pole connect power supply negative terminal, positive pole meets D ₅D ₆The mid point that connects, C ₅C ₆Behind the polyphone, a utmost point connects power positive end, and another utmost point connects power supply negative terminal, mid point and D ₆D ₇Mid point be connected, make C ₃=C ₄＞＞C ₅=C ₆

Wire frame 3 is the higher-order of oscillation and pulse-width modulation circuit; General purpose I CTLA94 forms pwm circuit; 12 pin of IC connect through D ₉R ₁C ₉And D _W12V dc power anode behind the halfwave rectifier filtering voltage regulation, 7 pin connect negative pole (), 8,11 pin connect positive source, 9,10 pin connect the elementary of pulse transformer B, connect 13,14 pin and make IC9,10 pin for recommending output mode.IC reference voltage 5V output 14 pin connect 15 pin after R ₈R ₅Dividing potential drop is connected to 4 pin, suitably selects R _8-5, make the dead band control time be not less than 0.2mS.5 pin are through C ₈Ground connection, 6 pin are through R ₆Ground connection is suitably selected C ₈With R ₆, making frequency of oscillation is 40KHz.Reference power supply 5V is also through R ₂With R ₄Be connected to inverting input 2 pin after error is amplified after the dividing potential drop, and through C ₇∥ R ₃Connect feedback end 3 pin, 1,16 pin need not, ground connection.

Wire frame 4 is a push-pull inverter circuit, the elementary neutral earthing of pulse transformer B, and secondary is equal turn numbers, around to opposite independence two windings.Respectively through R ₁₁R ₁₂, D ₁₂D ₁₃, C ₁₂C ₁₃, R ₁₅R ₁₆With BG ₂BG ₃Base stage and emitter between be connected.R ₁₃R ₁₄Be connected to BG respectively ₂BG ₃Collector electrode and R ₁₅R ₁₆, C ₁₂C ₁₃Tie point on, two equal and opposite in directions of the inferior utmost point two windings of pulse transformer B, the induced electromotive force that direction is opposite drives BG respectively ₂BG ₃, make BG ₂BG ₃Strict by the one after the other conducting of IC frequency with end, through C ₁₄With C ₅C ₆Output one width-adjustable between the mid point that connects, the 40KHz square wave current of frequency stabilization.

Wire frame 5 is an overload protecting circuit; The reference power supply of IC meets BG ₁Emitter, collector electrode connects 4 pin, reference power supply is through R ₇Meet BG ₁Base stage, the SCR anode A meets BG ₁Base stage, negative electrode K ground connection, control utmost point g meets R ₉An end, R ₉Another termination BG ₃Emitter, the control utmost point g of SCR has delay capacitor C ₁₀Ground connection.R ₁₁Be connected to DC high-voltage power supply negative terminal and inverter circuit BG ₂Emitter between, be sample resistance.Just often, change R ₁₀Make VR ₁₀Less than 0.6V, as load overload or short circuit, VR ₁₀Voltage drop is greater than 0.6V, through C ₁₁R ₉, C ₁₀The current limliting filtering delay-time makes the SCR conducting, then BG ₁Base potential descends, and conducting directly is added in reference voltage 5V on dead band control end 4 pin.Making the IC output duty cycle is 0.Powered-down after fault is got rid of, recloses power supply, and SCR control pole tension ends less than 0.6V, and circuit is operate as normal again.

Claims (2)

1, a kind of concentrating type multi-lamp system electronic energy-saving lamp is moulded in the shell in the insulation that special lamp cap or universal socket are housed, and capacitor is through fluorescent tube two ends filament and inductance coil polyphone; It is characterized in that: inductance coil is a high frequency choke coil, and inductance and capacitor resonance are in the frequency of oscillation of independent-excited electric ballast.

2, according to the electronic energy-saving lamp described in the claim 1, it is characterized in that: a concentrating type multi-lamp system electronic energy-saving lamp arbitrarily of lighting equal-wattage or different capacity with an independent-excited electric ballast simultaneously.And can implement switch control to every lamp.

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