CN2166519Y

CN2166519Y - Non-filament fluorescent lamp

Info

Publication number: CN2166519Y
Application number: CN 93211665
Authority: CN
Inventors: 阎发洲
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-04
Filing date: 1993-05-04
Publication date: 1994-05-25
Anticipated expiration: 2003-05-04

Abstract

The utility model discloses a non-filament fluorescent lamp, which utilizes a cold glow starting mode and adopts cold glow-starting ballast to realize the starting (lightening) to achieve stable operating condition. The non-filament fluorescent lamp adopts plate type electrodes; the cold glow-starting ballast is mainly composed of a ballast element Z and bridge rectifier circuits D1 D2 D3 D4. The utility model has the advantages of simple manufacturing technique, reliable work, fast glow starting (smaller than 0.2 seconds), good photoelectric effect, good energy-saving effect, capability of elimination of stroboscopic effects, operation without heating, no damage of electrodes, no burns of electrodes, long service life, simple structure of the cold glow-starting ballast, no contacts, no noise, no generating of wave interference and low cost. The non-filament fluorescent lamp is a change for ordinary fluorescent lamps. The non-filament fluorescent lamp is an ideal lamp for lighting.

Description

Non-filament fluorescent lamp

The utility model discloses a kind of non-filament florescent lamp.

At present, the fluorescent lamp of extensive use, lamp tube ends respectively has one group of filament, and this filament one is a heating starter usefulness, after starter is lighted, disconnects filament heating circuit by starter, the 2nd, as two electrodes of fluorescent tube glow discharge.Filament shake disconnected, burn out or aging after, fluorescent tube has just become refuse.Therefore, there is a fluorescent lamp restricted by filament, has the life-span short, fragile, the manufacturing process complexity, cost height, lighting-up rate wait shortcoming slowly, and result of use is undesirable.

The purpose of this utility model is exactly for overcoming the above-mentioned defective that filament florescent lamp is arranged, and a kind of non-filament florescent lamp is provided, and mainly is to change electrode shape, utilizes cold starter mode, and adopts cold glow-starting ballast to realize its starter (lighting) and reach steady-working state.

Non-filament florescent lamp contains the fluorescent tube of general filling with inert gas and mercury, and on lamp tube structure, plate electrode is adopted at two ends in the fluorescent tube, and electrode surface is thorium metal and oxide iridium.Non-filament florescent lamp utilizes cold starter mode, its operation principle is that a small amount of free electron and conduction particle are arranged in the medium (inert gas and mercury) in the fluorescent tube, execute under the voltage effect at pipe the two poles of the earth, motion produces collision, free rapidly, the electronics that dissociates moves to the pipe positive terminal, positive alien moves to the pipe negative pole end, electric current occurred.A large amount of electronics that owing to newly dissociate and positive alien have participated in the ionization by impact reaction again immediately, have further aggravated to dissociate, and fierce impact air medium is emitted ultraviolet ray excited fluorescent lamp and sent light.Along with the fluorescent lamp intraductal electric current progressively increases, the brightness of fluorescent tube progressively increases, up to normal luminous and maintenance stable operation.

Non-filament florescent lamp starter (lighting) and steady operation are finished by cold glow-starting ballast, cold glow-starting ballast is made up of ballast element Z and bridge rectifier D1D2D3D4, rectifier diode D3 also connects capacitor C 1, diode D4 also connects capacitor C 2, the idiostatic contact of C1, C2 is crossed ballast element Z and is connect power supply, and fluorescent tube the two poles of the earth meet bridge rectifier dc output end a, b.As supply voltage V _ANIn the time of=220 volts, before the unignited starter of fluorescent tube, output a, b open circuit, Vab=2

V _AN=622 volts.

The necessary condition that non-filament florescent lamp is lighted is

K L/D≤622 volt

In the formula: L---fluorescent tube length (cm)

D---tube diameter (cm)

K---fluorescent tube unit's diameter (1cm) and the required reliable ignition starting voltage of unit length (1cm), the K value is relevant with medium in the pipe, as when being filled with helium and mercury vapour,

K≤30 volt

The appearance of non-filament florescent lamp is the once change to conventional fluorescent lamps, and its major advantage is that manufacturing process is simple, reliable operation, starter fast (less than 0.2 second), photoelectricity and good energy-conserving effect, in servicely do not generate heat, can not shatter electrode or burn out electrode, the life-span is long, direct current supply does not have stroboscopic effect, and cold glow-starting ballast is simple in structure, and is contactless, power savings is remarkable, noiselessness does not produce wave interference, and cost is low.It is desirable lighting.

Accompanying drawing is the non-filament florescent lamp circuit diagram.

The utility model is an example with 30 watts of non-filament florescent lamps, and in the common fluorescent tube that is filled with helium and mercury vapour, garden flat metal electrode is settled at two ends, and electrode surface is the thorium metal.Selected data are: fluorescent tube metal electrode φ 3.6cm, and fluorescent tube length L=80cm, diameter D=4cm fills in the fluorescent tube with helium and mercury vapour, and K gets 30

The condition of lighting is checked:

80/4=600 volt＜622 volts of K L/D=30

Meet the necessary condition of lighting.

With the supporting cold glow-starting ballast of non-filament florescent lamp, it selects for use the concrete parameter of element as follows: inductive reactive element Z is 30 watts of FYZ-1, and silicon diode D1, D2, D3, D4 model are 2CP25, and capacitor C1, C2 are 400 volts of miniature AC capacitor of 0.2-0.5 μ f.

Claims

1, a kind of non-filament florescent lamp contains the fluorescent tube of general filling with inert gas and mercury, it is characterized in that:

Two ends are flat metal electrode in a, the fluorescent tube;

B, non-filament florescent lamp starter and steady operation adopt cold glow-starting ballast, mainly form by ballast element Z and bridge rectifier voltage-multiplying circuit D1D2D3D4, rectifier diode D3 also connects capacitor C 1, diode D4 also connects capacitor C 2, the idiostatic contact of C1, C2 is crossed ballast element Z and is connect power supply, fluorescent tube two termination bridge rectifier dc output ends.

2, non-filament florescent lamp according to claim 1 is characterized in that, two electrodes can adopt garden flat metal electrode in the fluorescent tube, and electrode surface can be thorium metal and oxide iridium.

3, non-filament florescent lamp according to claim 1 is characterized in that, the ballast element Z of cold glow-starting ballast can select inductive reactive element for use, mates with the fluorescent lamp capacity.

4, non-filament florescent lamp according to claim 1 is characterized in that, the rectifier diode D1D2D3D4 in the bridge circuit of cold glow-starting ballast can select silicon diode for use.

5, non-filament florescent lamp according to claim 1 is characterized in that, capacitor C 1, the C2 of cold glow-starting ballast can select miniature AC capacitor for use.