CN201540872U

CN201540872U - Fluorescent tube

Info

Publication number: CN201540872U
Application number: CN2009202689475U
Authority: CN
Inventors: 刘荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-18
Filing date: 2009-10-18
Publication date: 2010-08-04
Anticipated expiration: 2019-10-18

Abstract

The utility model discloses a fluorescent tube, comprising a glass tube casing, which is internally filled with mercury, nitrogen and argon and the inner wall of which is coated with fluorescent substances; the fluorescent tube is characterized in that two ends of the tube are each provided with an electrode where an oxygen isolation-removing hollow cavity is arranged. The fluorescent tube has quite long service life and reduces the pollution of wasted fluorescent tubes to environment.

Description

A kind of fluorescent tube

Affiliated technical field

The utility model relates to a kind of fluorescent tube of leaking gas of preventing.

Background technology

At present, existing fluorescent tube, their structure all is to scribble fluorescent material by glass tubular envelope, inwall, is filled with argon gas, nitrogen and mercury in the pipe, lamp tube ends respectively has two electrodes and a segment filament.Fig. 1 is the representative instance that a kind of electric ballast drives this fluorescent lamp, and in the time of such fluorescent tube startup and work, filament is in the operating state of heat always, and usually owing to filament fusing is scrapped, useful life is short.Though Fluorescent lamp without filament has overcome the shortcoming of filament fusing, increase useful life, so there are the following problems but appoint: lamp tube ends has been drawn a copper electrode respectively in glass shell, copper is different materials with glass, their thermal coefficient of expansion is inequality, when temperature changes, just inevitably there is the gap between them, airborne oxygen will leak into, fluorescent tube gas inside composition is changed, when leaking the oxygen enter and acquire a certain degree, the gas in the fluorescent tube just can not discharge again, and fluorescent tube has also just been scrapped.So all there is the shortcoming of lacking in gas leakage and useful life in present existing fluorescent tube.

Summary of the invention

In order to overcome the deficiency of lacking in gas leakage of existing fluorescent tube and useful life, the utility model provides a kind of long-life fluorescent tube of leaking gas of preventing.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of fluorescent tube, comprise the glass shell, in be filled with mercury, nitrogen, argon gas, the glass tube inwall scribbles fluorescent material, it is characterized in that lamp tube ends has only an electrode, the electrode place is provided with and isolates the deoxygenation cavity.The utility model is driven by my a kind of electronic ballast for fluorescent lamp (ZL200820140491.X), the high pressure that promptly utilizes the LC series resonant circuit to produce is added on the electrode of lamp tube ends, electrode is owing to high pressure produces field emission, make the gas ionization discharge in the fluorescent tube, more and more stronger, and activate the mercury vapor discharge, make fluorescent tube be in stable H type burning, send a large amount of ultraviolet rays, make fluorescent material send visible light.Isolation deoxygenation cavity is set at the electrode place at fluorescent tube two ends, an amount of oxygen scavenger is housed in cavity.When temperature changes, from leaking the oxygen enter between glass and the electrode, at first enter and isolate the deoxygenation cavity, the oxygen scavenger that is placed on the there is just having leaked the oxygen absorption enter, can not leak into service area, the gas componant of service area can not change, so fluorescent tube can not scrapped because of gas leakage, will prolong much useful life.Historical facts or anecdotes has showed above-mentioned purpose.

The beneficial effects of the utility model are:

1, improved the useful life of fluorescent tube;

2, can not turn black in the fluorescent tube two ends.

3, fluorescent tube and electric ballast operating state are more stable;

4, reduce of the pollution of waste and old daylight light to environment.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the circuit diagram of a kind of electric ballast and fluorescent tube in the background technology;

Fig. 2 is the vertical section structural map of first embodiment of the utility model, and wherein: 1,2 is the electrode of fluorescent tube, and 3 is fluorescent material, 4 is the lamp works interval, in be filled with mercury, nitrogen, argon gas, 5,6 for isolating the deoxygenation cavity, in an amount of oxygen scavenger is housed, 7 is service area glass shell;

Fig. 3 is the vertical section structural map of second embodiment of the utility model, wherein: 1,2 is the electrode of fluorescent tube, 3 is fluorescent material, 4 is the lamp works interval, in mercury, nitrogen, argon gas are housed, 5 for isolating the deoxygenation cavity, in an amount of oxygen scavenger is housed, 6 for isolating the glass shell of deoxygenation cavity, and 7 is the glass shell of service area;

Fig. 4 is the circuit theory diagrams that my a kind of electronic ballast for fluorescent lamp (ZL200820140491.X) drives embodiment.

Fig. 5 is the circuit theory diagrams that my a kind of electronic ballast for fluorescent lamp (ZL200820140491.X) drives another embodiment.

Embodiment

In embodiment illustrated in fig. 2, lamp works district glass shell 7 inwalls scribble fluorescent material 3, be filled with mercury, nitrogen, argon gas in the service area 4, be provided with one respectively at

electrode

1,2 places of lamp tube ends and isolate

deoxygenation cavity

5,6, in

cavity

5,6, an amount of oxygen scavenger is housed all, oxygen scavenger is at normal temperatures can be rapidly and the material of oxygen chemically reactive, as sodium, white phosphorus etc.

In another embodiment shown in Figure 3, lamp works district glass shell 7 inwalls scribble fluorescent material 3, be filled with mercury, nitrogen, argon gas in the operation interval 4, an

electrode

1,2 is respectively drawn at its two ends, service area 4 is outer for isolating deoxygenation cavity 5, an amount of oxygen scavenger is housed in cavity 5, and oxygen scavenger is at normal temperatures can be rapidly and the material of oxygen chemically reactive, as sodium, white phosphorus etc.

Claims

1. a fluorescent tube comprises the glass shell, in be filled with mercury, nitrogen, argon gas, the glass tube inwall scribbles fluorescent material, it is characterized in that: each only is provided with an electrode lamp tube ends, the electrode place is provided with and isolates the deoxygenation cavity.

2. fluorescent tube according to claim 1 is characterized in that: lamp tube ends electrode place respectively is provided with one and isolates the deoxygenation cavity.

3. fluorescent tube according to claim 1 is characterized in that: lamp tube ends electrode place only is provided with one and isolates the deoxygenation cavity.