CN2349668Y - Neon light tube without electrode dark area - Google Patents

Abstract

The utility model belongs to the field of illumination, particularly a neon light tube. The utility model is characterized in that an opening of a ceramic ring (2) is opened in one way; an opening of an insulator (2) is arranged in a glass tube (3) correspondingly to an enclosed opening of the glass tube (3); an electrode (1) is arranged in the insulator (2) through the opening of the insulator (2). The opening directions of the electrode arranged in the insulator with a one-way opening are conversely opposite, and the opening of the insulator is corresponding to the enclosed opening of the glass tube; so, positive ion and secondary electrons can only be emitted from the opening of the insulator, and the electrode dark area is cancelled.

Description

Electrodeless dark space neon lamp tube

The utility model belongs to lighting field, particularly a kind of neon lamp tube.

Existing neon light tube all is cold cathode emission electric light sources, so electrode surface just must be enough big.Because of the neon light caliber is very little, so electrode must be done very longly, when causing neon light luminous like this, electrode two exists long dark space.In order not influence appearance, all the curved turnback Tsang of electrode tip in tube behind, this produces, installs for the mechanization flowing water of neon light, brings many difficulties in actual fabrication.

The purpose of this utility model is exactly the electrode dark space that will shorten and cancel neon light tube, avoids electrode tip 180 degree to curve, and produces for the mechanization flowing water of neon light, in different occasions the creation advantageous conditions is installed.

The utility model is achieved in that by electrode, insulator, and glass-tube, formations such as Dumet wire, insulator is unidirectional opening, and the opening of insulator is placed in the glass-tube with respect to the airtight mouth of glass-tube, and electrode is placed in the insulator by the opening of insulator.

The utility model is owing to the electrode opening direction in the insulator that is installed in unidirectional opening is oppositely relatively, and the opening of insulator is the airtight mouth with respect to glass-tube.Like this, cation, secondary electron can only be from the opening emissions of insulator, circle round at the pipe two ends and to enter the positive column, make the motion path of cation, secondary electron be full of whole glass-tube, allow the Aston dark space, the negative glow district, three districts, cathode dark space overlap at negative electrode, anode brightness district and anode dark space overlap at anode, thereby have cancelled the electrode dark space.

The utility model so two needn't curve by 180 degree, has produced series of advantages because illumination effect is electrodeless dark space:

(1) is fit to mechanization production.The utility model fluorescent tube adopts electrode (ferrule) and the direct sealing-in of glass-tube, makes the finished product fluorescent tube.Reduce manual interface, improved rate of finished products, reduced failure rate.

(2) because neon light is a series circuit, the joint of the utility model fluorescent tube can adopt socket type, greatly facilitates installation, tube head is more suitable for encapsulation process with being connected of tube head, can be suitable under the various adverse circumstances and work, such as under water, and the place of fire protection requirement is arranged.

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

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of the figure of eight electrode among the utility model embodiment 1.

Fig. 3 is the structural representation of " X " font electrode among the utility model embodiment 2.

Electrode 1, insulator 2, glass-tube 3, Dumet wire 4.

Embodiment 1:

In the present embodiment, insulator is a ceramic ring 2, electrode 1 ceramic ring 2 of packing into, and the opening of ceramic ring 2, Dumet wire 4 links to each other with electrode 1.

After electrode 1 powers up, cation is under the effect of ceramic ring 2, emit from the opening part of ceramic ring 2, through anode region directive negative electrode, enter negative electrode through the anode region, anode is under the cation effect, the emission secondary electron, secondary electron emits from the opening part of ceramic ring again under the effect of ceramic ring 2, makes neon light luminous.

In the present embodiment because cation, the secondary electron tracks will be passed through the glass-tube two ends, make the motion path of cation, secondary electron be full of whole glass-tube, Aston dark space, negative glow district, three districts, cathode dark space overlap at anode like this, anode brightness district and anode dark space overlap at anode, thereby have cancelled the electrode dark space.We make the figure of eight to electrode in the present embodiment.Like this, in same volume, improved the surface area of electrode effectively, can reduce electrode shared space in glass-tube, electronics is more easily sent from pipe end.

Embodiment 2:

In the present embodiment, we make electrode " X " font.

Claims (3)

1, a kind of electrodeless dark space neon lamp tube, it is by electrode (1), insulator (2), glass-tube (3), Dumet wire formations such as (4), it is characterized in that insulator (2) is unidirectional opening, the opening of insulator (2) is placed in the glass-tube (3) with respect to airtight mouthful of glass-tube (3), and electrode (1) is placed in the insulator (2) by the opening of insulator (2).

2, electrodeless dark space according to claim 1 neon lamp tube is characterized in that its electrode (1) makes X-shaped.

3, electrodeless dark space according to claim 1 neon lamp tube is characterized in that its electrode (1) makes 8 shapes.

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