CN2130022Y - Tube protector for electronic daylight lamp starter - Google Patents

Abstract

The utility model relates to a lamp tube protector for a daylight lamp, which controls the state of a time delay normally closed contact through a solid timer to control the startup of a starter of the daylight lamp. The time delay normally closed contact is connected in series with an auxiliary starting capacitor and then is connected in parallel with original starting capacitors of electrodes on both ends of the daylight lamp. The solid timer obtains a working power source from the direct current power source terminal of the starter of the electronic daylight lamp. When the starter is started up, the momentary pulse voltage on both ends of the daylight lamp can be reduced effectively through the control of the auxiliary starting capacitor so as to protect the daylight lamp and to extend the service life of the daylight lamp.

Description

Tube protector for electronic daylight lamp starter

The utility model relates to a kind of protective device of electronic type fluorescent-lamp tube, is meant a kind of fluorescent-lamp tube protective circuit in order to protection electronic type fluorescent lamp starter especially, to increase the useful life of fluorescent tube.

Traditional electronic type fluorescent lamp starter (STARTER), though the advantage of finishing fluorescent start and power saving is rapidly arranged, but the formed pulse voltage of fluorescent tube build-up of luminance will be easy to make the blackening of fluorescent tube two ends, and then electrode suffers damage, and reduced useful life.Therefore, although the starter manufacturer of this type of fluorescent lamp emphasizes that again and again its build-up of luminance reaches the effect of power saving rapidly, consumer's acceptance is still not high, so occupation rate of market does not improve yet.Moreover, except the problem of aforementioned fluorescent tube attenuating in useful life, the useful life of its starter is also very short, because fluorescent-lamp tube is starting light moment, its pulse voltage will make and start the impact that electric capacity is subjected to this pulse voltage, and it is damaged, in the same manner, the useful life of the electronic component of this starter inside is also not long.If can't effectively solve the every problem of fluorescent lamp when starting, then the advantage lighted of fluorescent lamp moment build-up of luminance will be had a greatly reduced quality.

Main purpose of the present utility model is in order effectively to solve the existing shortcoming of aforementioned prior art; and provide a kind of protective device of fluorescent tube; it is specially adapted to the fluorescent lamp of electronic type moment build-up of luminance, makes fluorescent-lamp tube not take place to make the phenomenon of lamp tube ends blackening because of moment build-up of luminance pulse voltage impact.

Another purpose of the utility model is the electrode protecting device that a kind of fluorescent tube is provided, and the moment high impulse electric current that pulse voltage was caused when it can prevent build-up of luminance causes the damage of fluorescent-lamp tube electrode.Because the electrode system of lamp tube ends is made by the oxide of alkaline matter; momentary pulse voltage is higher; impulse current is also bigger; the useful life of causing the damage of electrode itself easily and damaging whole fluorescent tube; in the utility model, suitably reduce this pulse voltage, therefore can protect the electrode of its fluorescent tube effectively.

Another purpose of the present utility model is to provide a kind of protective device, in order to the behaviour in service of protection starter itself, is increased its useful life.Under circuit arrangement of the present utility model, the start-up circuit of starter itself (particularly starting electric capacity) is avoided high pulse voltage and is impacted and damage.

The fluorescent tube protective device of the utility model electronic type fluorescent lamp starter; its fluorescent lamp system gives build-up of luminance by an electronic type starter and starts; the output of this starter is connected to an electrode of fluorescent tube through choke; starter has a direct current power end in addition; and two electrodes of fluorescent lamp are parallel with a former startup electric capacity, and described fluorescent tube protective device includes:

One obtains the solid timer of working power by the dc power supply terminal of described starter;

One by the timer-operated time-delay normally closed contact of described solid;

One assistant starting electric capacity, it is with after described time-delay normally closed contact is connected in series, be parallel to the former startup electric capacity of this fluorescent lamp again, when the starter supplying DC power source is given described solid timer, described time-delay normally closed contact still is closure state, makes described assistant starting electric capacity be state in parallel with former startup electric capacity, and after the fluorescent lamp build-up of luminance is finished, described time-delay normally closed contact open circuit makes described assistant starting electric capacity and former startup electric capacity be off state.

Other purpose of the present utility model and effect are with by following narration and consult relevant accompanying drawing and more clear and definite.

Fig. 1 is the circuit connection diagram of solid timer of the present utility model (Solid state timer) and fluorescent lamp circuit;

Fig. 2 constitutes holistic daylight lamp circuit figure for protective device of the present utility model and starter and daylight lamp circuit.

At first referring to figure one, the end that it is illustrated in the two end electrodes of a fluorescent tube FL is connected in series a capacitor C 2, and the other end then is connected in series a choke TR, and then is connected to the starter (its connected mode can be consulted figure two) of fluorescent lamp by two-end-point PA, PC.The two end electrodes of fluorescent tube FL is parallel with a former startup capacitor C 1 in addition.In the utility model, its improvement part is to be to be parallel with an assistant starting capacitor C 3 on this former startup capacitor C 1, and this capacitor C 3 is connected in series afterwards cross-over connection again in the two ends of this former startup capacitor C 1 with a time-delay normally closed contact RL/b.An one relay R L capacitor C in parallel ₄After again series resistor R form a solid timer (SOLID STATE TIMER), the open and close state of its relay R L may command time-delay normally closed contact RL/b.Two ends PA, the PB of this solid timer is the DC power supply two ends that are connected to starter.

In power connection, the voltage at PA, PB two ends will make relay R L time-delay excitatory, at this moment, its time-delay normally closed contact RL/b still is closure state, make capacitance increasing so make auxiliary capacitor C3 and former startup capacitor C 1 be state in parallel, so during the build-up of luminance of fluorescent lamp, the momentary pulse voltage of lamp tube ends is reduced to effectively almost is bordering on normality voltage, so the two ends of fluorescent tube are difficult for producing the purple arc light, also just are difficult for blackening.

When lamp lighting-up is finished and after making lamp tube starting, energising after 1 second in, open immediately by the normally closed contact RL/b contact of will delaying time for the solid timer, and assistant starting capacitor C 3 promptly formed with former startup capacitor C 1 and opened circuit this moment, so can not influence the specified output of starter.Above-mentioned solid timer also can be replaced by the delay switch that bimetal leaf or other electronic material are made.

Fig. 2 is the circuit diagram that solid timer of the present utility model is connected with existing starter, includes two transistor Q1, Q2 and other electronic component in starter ST, and this starter ST only shows certain embodiment of existing circuit.Because the time-delay normally closed contact RL/b in the utility model can be after fluorescent start be finished, form open-circuit condition, so can not influence the output of starter, otherwise, if this time-delay normally closed contact RL/b keeps path always, then the output of starter will increase, and causes burning of transistor Q1, Q2 sometimes.The output PC of starter ST is connected to the electrode tip of fluorescent lamp FL through choke TR.Starter ST also has the output of a direct current power supply in addition, and its cross-over connection is in the two ends of solid timer PA, PB.

Claims (1)

1, a kind of fluorescent tube protective device of electronic type fluorescent lamp starter; its fluorescent lamp system gives build-up of luminance by an electronic type starter and starts; the output of this starter is connected to an electrode of fluorescent tube through choke; starter has a direct current power end in addition; and two electrodes of fluorescent lamp are parallel with a former startup electric capacity; it is characterized in that described fluorescent tube protective device includes:

One obtains the solid timer of working power by the dc power supply terminal of described starter;

One by the timer-operated time-delay normally closed contact of described solid;

One assistant starting electric capacity, it is with after described time-delay normally closed contact is connected in series, be parallel to the former startup electric capacity of this fluorescent lamp again, when the starter supplying DC power source is given described solid timer, described time-delay normally closed contact still is closure state, makes described assistant starting electric capacity be state in parallel with former startup electric capacity, and after the fluorescent lamp build-up of luminance is finished, described time-delay normally closed contact open circuit makes described assistant starting electric capacity and former startup electric capacity be off state.

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