DE1816021A1 - Gas discharge tube with cold cathode for the simultaneous display of two legible characters - Google Patents

Description

The present invention relates to a gas discharge tube with cold cathode, in particular a tube for the simultaneous display of two adjoining independently switchable readable Sign"

Such discharge tubes are known, but the over- unc Adjacent characters form two groups that belonged to separate electrode packages. The characters were each in a ring-shaped Frame attached, which was about the same size as the "attached" in it Characters so that within the surface of each frame only one character could be reproduced.

Such tubes are expensive, however, since each group of drawings had to be assembled individually before the groups were

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My3amen can-shaped, at least partially gauze-shaped anode attached became# ' .

This Ifachteil is avoided if, in such a gas discharge tube according to the invention, the two groups of characters belong to a single set of electrodes and the dimensions of the characters are so smaller than those of the associated frame that two characters belonging to different groups can be reproduced within one frame surface 'nnent Preferably, the frame elongated rechteokf-shaped manner, wherein the characters of one group are fixed in the vicinity of the one short side, the ά, βτ other group in the vicinity of the opposite short side of the associated frame when the groups one above the other are of characters must, the frames are arranged with the long sides vertically. In general, the long sides of the frame are arranged parallel to the longitudinal axis of the discharge tube.

Exemplary embodiments of the invention are shown in the drawings and are described in more detail below. Show it

Fig. 1, 2, 3 and 4 frames with characters,

Fig. 5 © inon insulating body of a ventilated embodiment of the invention,

Pig. 6 and 1 another embodiment of the invention,

8 shows a gas discharge tube of the embodiment according to ' the figures 1 to 3 5 «'

In Fig. 1, 1 is a metal frame, which in this case is a has a substantially elongated rectangular shape. However, the framework can also be circular, for example. The frame 1 is provided with holes 2 to enable it to be bayed onto an insulated pin. At the upper short side of frame 1 is a character 3 in the form of the letter

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ben H attached. The height of the mark is slightly lower than half the height of the frame 1..

In a corresponding way is in piss. 2 the sign 4 in

Shape of the letter. V attached to the lower "short side of the lame 1" so that two characters belonging to different groups can be displayed within the surface of the window.

• There is also the character 9 in the form of the letter A on the Underside of the frame 10 in Fig. 3, and the sign 11 in Fora of a letter K in FIG. 4 at the top of the frame 12.

The frames M, 5i 10 and 12 are alternately covered with insulating plates 6 according to FIG. 5 lined up on pins 15 (FIG. 8) covered with insulating material. At the end the package created on the thirty Koise is placed in a can-shaped anode 1 <, which partly consists of gases. The stretcher to Fij. 8 can alao the letters IV | Represent KA ₁ KV or KA. In the event that the characters are ^{rotated by S 1} O ^{0 and} arranged in the frame, these characters can also be displayed next to each other. In general, the upper group will still contain the characters m, μ, η and ρ, and the lower group will also contain the characters ^,, F, Hz and S,

To avoid lining up, you can

rungsform after Fi ~. And 7 stack the windows 1, 5 »10 and 12 and the insulating plates 6 in a u-shaped anode part 7 and ^{clamp them} by arranging a cover 13 which can be attached to part 7 o esc - ¹⁰ ^ ^en (Fi, ". 6 and Fi _c ·. 7 / · The cover 13 can be welded to the side walls of the aodic part 7. The cover 13 is provided with an opening which is covered by gases 14.

Then there is an ilura connection between the anode 7 and the

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its frame the characters avoided are on the side walls of the U-shaped anode 7 insulating strips or an insulating layer 8 attached. However, the anode can also be made of aluminum or an alloy thereof Manufacture and these side walls by anodizing with an insulating Cover the aluminum oxide layer.

Instead of the letters shown, the! Characters also consist of other symbols »The characters can be combined with the associated Frame, for example, consist of only one part and a ' Plate can be punched or etched · However, they can also be made of wire and welded to the frame or by means of precipitation obtained from metal.

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Claims (1)

"'- 5 -''
PATE N- T A. II 3 Γ B 'UC Π E. . 1. Gas discharge tube to play two independently turn on table adjoining legible characters that form two groups and in the case of the characters on square, rectangular or ring-shaped frames of the same dimensions and in which the groups are an anode consisting at least partially of gauze are surrounded thereby characterized in that the two groups of characters belong to a single electrode package and the dimensions of the characters are so smaller are than those of the associated frame that within the frame surface two characters belonging to different groups can be represented i 2β gas discharge tube according to claim 1, characterized that-each frame is oblong and rectangular and one near one short side bears attached mark. 3. Gas discharge tube according to claim 1 or 2, characterized in that A'ekenn- Draws that the frame with characters alternating with plate-shaped Inolierralimen stacked to form a single electrode pa ^ et and in one can-shaped anode feet: eklerr, mt are. 90983 1/0894 iviis 3ADORKStNAL