CN2153204Y - Fluorescent tube using metallic bar electrode terminals - Google Patents

Abstract

The utility model provides a fluorescent tube using metallic bar electrode ends. The main device of the utility model is composed of a power supply circuit, an oscillation circuit and a lamp starting circuit. High frequency oscillation can be generated by the oscillation circuit, the high frequency oscillation can be connected with the lamp starting circuit, the lamp starting circuit is connected in series with two secondary windings, the current conveyance of the single side electrode end of the fluorescent tube can be realized after the start of a lamp tube, and the luminescence and brightening can be realized at a low voltage. A low cost and long life metallic bar electrode ends can be used in a fluorescent tube.

Description

Fluorescent tube using metallic bar electrode terminals

The relevant a kind of fluorescent tube of the utility model refers to that especially this fluorescent tube can be with the old filament of the extreme replacement of contact rod.

Fluorescent tube is commonly called as fluorescent lamp, and mainly when AC power connected fluorescent tube, just its two poles of the earth had electric current to pass through, and the electric current of this conducting will make the cathode filament heating of traditional tube, and the chemical substance that is applied on the negative electrode will thereby produce the volume electronics.These electronics are attracted by other utmost point in the Dragon Boat Festival.Preset blanketing gas because of in managing, the reciprocal impact friction of electronics and produce ultraviolet ray passes the default phosphor powder of inside pipe wall, can send visible light.

Traditional fluorescent needs to make its stabilized illumination with suitable electric current, so its necessary accessory comprises starter and stabilizer after lighting in addition; But generally use its life-span of bimetal leaf starter all not long.

Modern age then uses in a large number and develop actively electronic type fluorescent tube starts and stabilizer.But existing electronic type fluorescent tube starts and stabilizer, mostly producing pulse pressure with the oscillating circuit heat filament dashes, both sides, fluorescent tube discharge back filament promptly fails, therefore must utilize the electronic type current-limiting circuit to make the fluorescent tube continuous discharge luminous again, this mode fails because of filament, therefore fluorescent tube must be more luminous than ability regular picture under the higher voltage, make the inner fluorescent layer of fluorescent tube fragile, as the filament of electrode cost of manufacture height not only then, and under this kind operating structure, also normal impaired and can't bear to use, influence light fixture useful life.

So, main purpose of the present utility model promptly is to provide a kind of extreme fluorescent tube of metal conductive bar that uses, earlier give filter rectification when making the power supply input through a circuit, after voltage is selected, produce the higher-order of oscillation with an oscillating circuit and be connected to a lamp circuit, this lamp circuit is with twice level coils of a capacitances in series, and make wherein that a coil is connected to fluorescent tube one side pole end, the in addition side of the fluorescent tube resistance of then connecting is connected to power end, make the extreme of fluorescent tube can use the conducting metal rod, and can reduce cost, and it is impaired to reduce fluorescent tube, prolongs its useful life.

Novelty of the present utility model and other characteristics will cooperate the following drawings embodiment to describe in detail and be tending towards clear, as shown in the figure:

Fig. 1 is the utility model preferred embodiment circuit diagram;

Fig. 2 is another embodiment circuit diagram of the utility model.

See also Fig. 1, startup stabilizer of the present utility model roughly includes a power supply circuit 10, a voltage selecting circuit 20, an oscillating circuit 30 and a lamp circuit 40; Wherein:

Power supply circuit 10, make two power inputs be connected to a transformer T1, in the front end of a transformer T1 capacitor C 1 in parallel, a rear end capacitor C 4 in parallel, respectively a connect capacitor C 2, C3 of the two poles of the earth of power supply constitutes a filter circuit with ground connection, reduce wave interference and flicker, again through rectifier D1 rectification as the power supply supply;

Voltage selecting circuit 20, be in series by two groups of the capacitor C 5～C6 that are in parallel, resistance R 2～R3, utilize a jumper connection pin JP to select different supply voltage (switching of 110V or 220V), when using the 110V power supply, make the JP short circuit, JP open circuit then when using the 220V power supply;

Oscillating circuit 30 utilizes secondary coil L1 as triggering signal switching transistor TR, promotes power supply coil L2, cooperates the capacitor C in parallel with L2 9 to produce the higher-order of oscillation;

Lamp circuit 40, by capacitor C 10 and two level coil L3, L4 is in series, and two of secondary coil L4 is connected to the metal bar electrode 2a of fluorescent tube 1 one sides, fluorescent lamp opposite side barred body electrode 2b then connect a resistance R 4 and the power end that arrives, with the above-mentioned two secondary coil L3 that are in series, L4, make the metal bar electrode 2a of fluorescent lamp one side behind the fluorescent tube Discharge illuminating, still continue to have a spot of electric current by heating, it is luminous to keep fluorescent lamp with low voltage, the middle section position that secondary coil L3 twines at coil, drawing goes out several contact points a1, a2, a3 is for the fluorescent lamp of lighting different capacity.

In another possible embodiments of the utility model, also include a power supply circuit (100), an oscillating circuit (200) and a lamp circuit (300), wherein:

Power supply circuit (100) is combined by a transformer T1, a filter FL1 and a rectifier D1 by the electric capacity combination; Right overload and the short circuit phenomenon generation, import out end except power supply and be connected in series the fuse F1 for avoiding, when more being serially connected with an overcurrent just as the thermistor HR that opens circuit;

Oscillating circuit (200) vibrates as LC with the primary coil L1 of a transformer T2 and the capacitor C 1 in parallel with it, in order to trigger oxide-semiconductor control transistors Q1;

Lamp circuit (300), primary coil L2 and secondary coil L3 by transistor Q1 control, L4, L5 forms, wherein L3 and L4 use for filament (401) (402) heating of light fixture (400) for the induction low-voltage, coil L5 is connected serially to coil L2 with a capacitor C 2, so, after starting power supply, coil L5 can respond to a high pressure because of the L2 of oscillating circuit (200) conducting of controlling, so, the end in addition of coil L5 serial connection capacitor C 2 then can be connected to an end of the metal bar extreme (401) of light fixture (400), and is connected to an end of another metal bar extreme (402) from the power supply "+" of this power supply circuit (100);

By this, metal bar (401) (402) when light fixture (400) is heated by the voltage of coil L3, L4 respectively, the high-voltage pulse that coil L5 is produced then can make light fixture (400) light a lamp, after in case light fixture (400) is lighted fully, because internal driving moment reduction, this oscillating circuit (200) is the failure of oscillations and stops to produce high voltage pulse, and light fixture (400) promptly continues heating by the low pressure of coil L3, L4 this moment, lights a lamp and keep.

So, for being applicable to the light fixture of various wattages, this oscillating circuit (200) is serially connected with a vacuum resistance (500); This vacuum resistance (500) can be adjusted its internal driving automatically according to the size of current of passing through, and so can adjust the size of its high-voltage pulse automatically, with the light fixture that the is applicable to various wattages use of lighting a lamp.

The utility model owing to can be continued to heat to keep to light a lamp to extreme after lighting a lamp by coil L3, L4, not only power consumption is few, can be with the traditional filament of the extreme replacement of metal bar, cost of manufacture is low, and the problem that makes fluorescent tube continue to use because of filament is impaired also can effectively be improved.

Claims (3)

1, a kind of extreme fluorescent tube of metal bar that uses, it is characterized in that, be provided with devices such as power supply circuit, oscillating circuit and lamp circuit, power supply is exported behind filter rectification, and can select to use a voltage selecting circuit, simultaneously with oscillating circuit to produce the higher-order of oscillation; Above-mentioned lamp circuit constitutes with an electric capacity and twice level coils, and it is extreme to make wherein a coil two be connected to the default metal bar of fluorescent tube one side, fluorescent tube opposite side extreme series connection one resistance and be connected to power end.

2, use the extreme fluorescent tube of metal bar according to claim 1, it is characterized in that, in the lamp circuit, one time the level coil is twining middle section position, and drawing goes out several contact points.

3, use the extreme fluorescent tube of metal bar according to claim 1, it is characterized in that power supply circuit is connected in series a thermistor in ac output end, and be connected to a vacuum resistance in the oscillating circuit series connection.

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