CN2306606Y - Energy saving emergent lamp for use when power cut - Google Patents

Abstract

The utility model relates to an emergent lighting lamp. A current limiting capacitor and a drain resistor are connected between an input end of a rectification circuit and a mains supply. Both ends of an accumulator are connected in parallel with an accumulator capacity meter. An output transformer is a small-sized high-frequency self-oscillation transformer; one end of one primary winding of the output transformer is connected with a base electrode of a high-frequency oscillation tube; the other end is connected with an emission electrode of the oscillation tube; connection points of the primary winding and the oscillation tube are connected with an output end of the rectification circuit through a potentiometer and a resistor. One end of the other primary winding of the transformer is connected with a collector electrode of the oscillation tube; the other end and the current limiting capacity are respectively connected with the output end of the rectification circuit and an input end of the mains supply through linked switches. A secondary winding of the transformer is connected with a spherical energy saving lamp tube.

Description

The bright emergency light of energy-saving power failure

The utility model relates to a kind of illuminating lamp, particularly a kind of emergency light.

Emergency light constitutes by transformer, storage battery and the illuminating lamp of heaviness on the existing market, and its volume is big, the cost height, and its use of can only under dc state, throwing light on, and under exchange status, can only charge, function singleness only can be taken out emergent the use when having a power failure.Its charging interval will rectificate in addition, and generally at 12-16 hour, and lighting hours is short, has only about 3 hours.

The purpose of this utility model is exactly in order to address the above problem, but provides that a kind of volume is little, in light weight, function complete and equal bright emergency light of energy-saving power failure of illumination work under the AC and DC state.

Technical solution of the present utility model:

The bright emergency light of a kind of energy-saving power failure, it includes rectification circuit D ₁-D ₄, storage battery E, higher-order of oscillation pipe BG, output transformer T and fluorescent tube H, it is characterized in that at D ₁-D ₄Input and mains supply between be connected to current limiting capacitance C ₁And bleeder resistance R ₁, R ₂, at storage battery E two ends and be connected to battery capacity meter G, output transformer T is small-sized high-frequency self-excitation oscillation transformer, its elementary winding W _bThe base stage of a termination higher-order of oscillation pipe BG, the other end passes through capacitor C ₂Connect the emitter-base bandgap grading of BG, their tie point is by potentiometer W and resistance R ₇Meet D ₁-D ₄Output, the elementary winding W of another of T _cThe collector electrode of one termination BG, W _cThe other end and current limiting capacitance C ₁Respectively by linked switch A, A ＇ and D ₁-D ₄The input of output and 220V mains supply link to each other the secondary winding W of T _aThe type of receiving power saving fluorescent lamps H.

The utility model when AC outage, is changed storage battery power supply in the lamp automatically except that all functions of use with AC desk lamp, continue illumination and reach more than 5 hours, when exchanging incoming call, recovers the AC desk lamp illumination again automatically, simultaneously storage battery is carried out floating charge.The utility model has saved heavy power transformer, and volume is little, and is in light weight, and cost is low, and fluorescent tube employing small power energy-saving ball-type fluorescent tube, and it is bright to throw light on, little power consumption, long service life.The utility model is provided with unique battery capacity meter and function is used display circuit, the electric storage and the user mode of storage battery directly perceived can come into plain view, guarantee that storage battery keeps full electric charge, make it not fragile, and the alternating current illumination keeps battery capacity constant when using, and can prolong the useful life of storage battery.Storage battery of the present utility model adopts small-sized maintenance-free lead accumulator, and capacity is big, and is hermetically sealed, and no leakage is pollution-free, can charge repeatedly.The utility model is owing to be provided with the forced-triggered circuit, thus when ambient temperature and working voltage are low, can guarantee that still the fluorescent tube fast starting throws light on, but the useful life of prolonging lamp tube.

Fig. 1 is an electrical schematic diagram of the present utility model.

As Fig. 1, in the utility model, among three fixed contact 1 ＇, 2 ＇ of linked switch A ＇, 3 ＇, contact 1 ＇, 2 ＇ connect capacitor C after linking to each other ₁, connect by resistance R simultaneously ₃And LED ₁The interchange display circuit of forming, 3 ＇ are unsettled in the contact, in three fixed contacts 1,2,3 of linked switch A, the elementary winding W of contact 1 connection small high-frequency self-excitation oscillation transformer T _c, connect potentiometer W and resistance R simultaneously ₇The serial connection branch road, contact 2 connects by resistance R ₅And LED ₂The charging display circuit of forming, contact 3 connects by resistance R ₄And LED ₃The status display circuit of forming that quits work.The utility model is in potentiometer W and resistance R ₇Branch road on and be connected to by button K and resistance R ₆The forced-triggered circuit that is composed in series.

When the utility model is connected the work of 220V AC power, when contact 2 ＇, 2 being connected, because capacitor C by linked switch A ＇, A ₁The capacitive reactance effect, civil power is carried out current limliting.Resistance R ₁, R ₂Be bleeder resistance, after it is used for preventing to pull up attaching plug, C ₁On the electric charge that accumulates hit the people.This moment R ₃And LED ₁The interchange display circuit of forming is connected and is shown.Rectification circuit D ₁-D ₄Alternating current is carried out full-wave rectification, and the direct current of formation is connected R ₅And LED ₂The charging display circuit of forming makes its demonstration work, and promptly carry out charging work to storage battery E this moment, and battery capacity meter G shows the charging capacity situation of storage battery.When linked switch A ＇, A connected contact 3 ＇, 3, the utility model quit work, by R ₄And LED ₃The status display circuit demonstration work of forming that quits work.When linked switch A ＇, A connected contact 1 ＇, 1, direct current entered by oscillating tube BG, small-sized high-frequency self-excitation oscillation transformer T, capacitor C ₂, C ₃With potentiometer W and resistance R ₇The self-excited oscillator that branch road constitutes, when circuit was connected alternating current, most of rectified current was for oscillator work, and small amount of current is carried out floating charge to storage battery E, makes storage battery keep electric storage optimum state.When alternating current cuts off the power supply, just convert to automatically and power by storage battery E.After the self-excited oscillator energized, the anode electric current is through potentiometer W and resistance R ₇Be added to the elementary winding W of small-sized high-frequency self-excitation oscillation transformer T _b, BG provides the base stage operating current to higher-order of oscillation pipe, makes the BG conducting, and collector current increases, and makes collector potential develop to negative direction, because feedback winding W _bInduction coupling, the base current of BG is further increased, collector potential more trends towards bearing.Because strong feedback causes BG " snowslide ", make BG enter the saturation region rapidly, again because the effect of pulse transformer T, the BG saturation condition can not long term maintenance, V when BG is saturated _CeApproach 0, supply voltage directly is added in the elementary winding W of T _cTwo ends.Because W _cThe impedance of inductance is very big, and exciting curent increases gradually, makes collector current I _cAlso increase gradually, and base current I _bApproximate constant after after a while, has been destroyed saturation conditions I so finally _b＞I _c/ β (β is a current amplification factor), and make BG break away from saturation condition automatically, at this moment base current descends, and causes that collector current descends, and collector potential develops to positive direction again.So produced the chain reaction that feedback causes again, BG ended rapidly.After BG ended, the induced electromotive force among the transformer T was by its parasitic capacitance and load fluorescent tube H discharge, so just finished BG by being conducting to the one-period that ends, and W _cOn induce approximate rectangular wave voltage and give fluorescent tube H power supply.Capacitor C in the circuit ₂Provide alternating current path, make the base stage of BG that enough feedback currents be arranged, potentiometer W is used for regulating input current, C ₃Be used for absorbing BG by saturated enter by the time surge voltage that moment produces, prevent that BG from puncturing.Resistance R ₆The forced-triggered circuit of forming with button K is the starter trigger of fluorescent tube H, when ambient temperature and working voltage are low, just can make the rapid starter illumination work of fluorescent tube H as long as click button K, can prolong its useful life.

Claims (3)

1, the bright emergency light of a kind of energy-saving power failure, it includes rectification circuit D ₁-D ₄, storage battery E, higher-order of oscillation pipe BG, output transformer T and fluorescent tube H, it is characterized in that at D ₁-D ₄Input and mains supply between be connected to current limiting capacitance C ₁And bleeder resistance R ₁, R ₂, at storage battery E two ends and be connected to battery capacity meter G, output transformer T is small-sized high-frequency self-excitation oscillation transformer, its elementary winding W _bThe base stage of a termination higher-order of oscillation pipe BG, the other end passes through capacitor C ₂Connect the emitter-base bandgap grading of BG, their tie point is by potentiometer W and resistance R ₇Meet D ₁-D ₄Output, the elementary winding W of another of T _cThe collector electrode of one termination BG, W _cThe other end and current limiting capacitance C ₁Respectively by linked switch A, A ＇ and D ₁-D ₄The input of output and 220V mains supply link to each other the secondary winding W of T _aThe type of receiving power saving fluorescent lamps H.

2,, it is characterized in that contact 1 ＇, 2 ＇ connect capacitor C after linking to each other among three fixed contact 1 ＇, 2 ＇, 3 ＇ of linked switch A ＇ by the bright emergency light of the described energy-saving power failure of claim 1 ₁, connect by resistance R simultaneously ₃And LED ₁The interchange display circuit of forming, 3 ＇ are unsettled in the contact, in three fixed contacts 1,2,3 of linked switch A, the elementary winding W of contact 1 connection small high-frequency self-excitation oscillation transformer T _c, connect potentiometer W and resistance R simultaneously ₇The serial connection branch road, contact 2 connects by resistance R ₅And LED ₂The charging display circuit of forming, contact 3 connects by resistance R ₄And LED ₃The status display circuit of forming that quits work.

3, by the bright emergency light of the described energy-saving power failure of claim 1, it is characterized in that in potentiometer W and resistance R ₇Branch road on and be connected to by button K and resistance R ₆The forced-triggered circuit that is composed in series.