DE1810174A1 - Electron gun system for color picture tubes - Google Patents

Description

Patent attorneys Dipl.-Ing. ft, Beetz u. Dipl.-Ing. Lamprecht

Munich 22. Slelntdorfitr. 10 181-0174

B L,

IU Lt.

LC h I. L

L I Κ t

81-14.091 * < 14.0921) November 21, 1968

BIfACiU, MI> ", t ο k y ο (J * P *»)

Electronic cannon system for color picture tube

The invention relates to an improvement in a color television tube, such as the Schattenmaaken color television tube, in particular to an improvement in the structure of the electron gun system, the three electron guns were packed in the shape of one trigonal pyramid or a prism in the neck of the tube includes Invention ^ according to the improvement is that the Electrodes dor associated electron guns are connected to each other with a continuity tape to the electrodes in each Keep the group of electrodes at the same potential. .

The task, nature and effects of the invention result from it the following description of two exemplary embodiments illustrated in the drawing; show in *

81- (Item 16 04-D-TpGr (O)

909830/0856

J. J I I. JJJi *

Fig. 1 is a view of the conventional pulp canon assembly;

Pig. 2 shows a horizontal cross section of the structure shown in FIG. 1 as a section along line A-A;

FIG. 3 is a view of an exemplary embodiment according to FIG Invention according to the Ausloht naeis Fig. 2; and

4 shows an essential part of another embodiment of the invention.

In Pig. 1 orders the conventional Elektronenkanonesiaia- »Ia ge 1 from three Elektroaeiafeanonen units §r, Gb and © g (Sg cannot be seen in Pig. 1), which belong to red, blue and green, with each cannon Mr, 1-Sitter (Grid electrode) 2, Mr. 2-Gittei * 3, Mr. 3 & itter 4 and Ir 4 grating 5 includes. Bieae three electron guns are arranged in such a way that their axes form a trigonal pyramid or a prism, and are provided with a common convergence pole piece cage 6 maintain the required accuracy.

As can be seen in Fig. 2, the same sitters of corresponding cannon units are connected to a set of holding elements. For example, in Fig. 2 the Hr. 3-sitter 4 ₉ 4 _b and 4 belonging to the droppings, slam and green cannons _{r held} by holding elements 7 «

Each of the holding elements 7 includes _$ as below. " ia ien Fig _e β '

909830 / 0856-.

OR161MAL INSPECTED

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ur.ö 7 dos USA-Pat · 3 254 251 shown, a bow middle part 7r, 7b or 7 for receiving the Mr. 3-grid 4 _r , 4 _b or 4 "and two end sections 7 ¹ V ₉ 7 ^f b or 7 * and is with the grid?. · 4 _r , 4 _b or 4_ in said middle part 7 _r , 7 ^ or 7 · ve roc Ii ?; e eats. The end sections 7 ^f _r , 7 ¹ ^ or 7 * of the holding element 7 are embedded in the insulating holder 8. After the relative position of the three electron gun units has been fixed, the axes of the corresponding zanon units are on the inner surface of the faceplate (not shown) cross, the holding elements 7 are mutually connected by points at two points in the band sections

ensure that the grids 4 _r f 4 _& and 4 are at the same potential. This is common practice when assembling an electron gun system for a color television tube

Meanwhile hvrt the mutual connection of the support members by welding following Saehteile "

(1) This introduces an additional step in the manufacturing process of the layer; (2) it is characterized "that the electrodes or Sitter the time of welding a strain subjected to the _f inevitably leads to poor alignment of the electron gun and hence to excessive Koiivergenzeliistelliang or 'unsatisfactory Pokussiereigeiischaft; and; (-3) this makes it difficult to disassemble the electron guns by reusing the guns.

909830/0866

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The invention has the task of sugru & d ·, this laohteil * to eliminate and a color picture tube with more reliable properties * "Babel. a color picture tube of berry quality is to be achieved and a color picture tube is to be bought that can easily be produced in less working time leaves. In addition, the invention aims to provide a color picture tube will be given, if necessary for reuse who can easily dismantle electron guns,

In order to solve this problem, the electron gun includes »- plant according to the invention a contact piece 9 »welobes a band or a wire of resilient material such as cold rolled stainless steel, as shown in FIG. 3, is inclined. The middle part A ·· Kontakt et Ucks 9 is through one of the holding elements Ben *, for example, attached to the file 7 of the Ualteeleaentes 7, where it is connected to the electrode 4, and both end surfaces of the contact piece 9 are in contact with the end sections 7 _r and 7 _{b of} the other Qalte elements 7 due to their spring properties connected to electrodes 4 _r and 4 _b .

There is no need to mention the holding element to which the contact piece 7 is fastened "can be any one of the three, in which pigs" 2 and 3, corresponding parts are given the same reference numerals.

ϊη Fig. 4, which shows another * Executioni ^ p ¹ IeI of the

finding, boys 12 and 13 are forming a

9098307OB 56

ORIGINAL INSPECTED

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1810T74 ; - 5 -

-Öffnung 11 auο the central portion of a holding member 10 cut out, which "1st connected to the grid electrode I ₀ · In the assembled three gun structure (not shown) 12 and 13 join the tongues in contact with the electrodes 4 _b and 4", thereby gesiohert, that the electrodes 4 _r , 4 _b and 4 are brought to the same potential »

It is readily understood that the holding element 10 with tongues 12 and 13 with any of the Ur. 3 electrodes can be connected in the previous example. »

As was described above, is omitted according to the invention, vjonaeh three identical grid electrodes are electrically connected without that they versohweißt each other, the possibility that the dimenaionale accuracy of the combined Tsilektronenkanonen would be affected by the "effect of the welding. Also, makes the gun assembly according to According to the invention, an electron gun system is thus obtained which is reliable in quality and easy to manufacture because use is made of a simple contact piece.

In the above description only the mutual Connection between the ITr. 3-grid electrodes 4 », 4v and 4_ explained. It is apparent, however, that the same procedure can be applied to the other electrodes if necessary

BATH ORIGINAL 909830/0856

Claims (1)

Jt »i J t 1 J ι j ι - ». - J ) ■ »J. J J> J J IJ JIl J - > YY YY 181017 A ■ -V- 1. electron gun system for color picture tube with three arranged in the shape of a trigonal pyramid or a prism ^ lektronenkanonen, characterized in that a conductive contact piece (9) is provided ,, welohes with one of the associated Slektroden (eg 4_) of the corresponding Electron guns connected and in resilient contact with each of the remaining electrodes (e.g. 4 _b , 4 _r ). 2. Electron gun system according to claim 1, characterized in that the conductive contact piece (9) consists of a band or wire made of resilient material, is attached in its central part to one of the electrodes (4_) and inVeinem of its end portions in resilient contact with each one of the the other two electrodes (4 ^, 4 _r ). 3. electron gun system for color picture tube with three electron guns ^ which are held by means of holding elements and insulating holder in the form of a trigonal pyramid or a prism ., Characterized in that? one of the holding elements (eg 10), which is attached to one of the associated electrodes (eg 4 ″) of the corresponding electron guns in order to hold the electrode, is provided with tongues (12, 13) cut out of said holding element, and that the two tongues are in resilient contact with the other two electrodes (4b, 4r) due to their arrangement. • 909830/0856 . . ORtGlNAL INSPECTED t t «« »t · < rc ti c crt f »7 aa A. Color picture tube, characterized by (1) a plurality of electron guns each including a plurality of axially aligned electrodes extending longitudinally a plurality of insulating holders are mounted; and (2) a conductive contact piece (9) firmly connected to one of the associated electrodes (e.g. 4 "» 4 ^ »4 _r ) of the corresponding electron guns, whereby the electrodes should be at the same potential * and in spring contact with the other associated electrodes Electrodes for the purpose of creating a mutual conductive connection between them. 5. color picture tube according to claim 4, characterized in that «three electron guns are provided and the contact piece comprises a resilient conductive band (9) which is attached to one of the associated electrodes (4_) of the three electron guns with its central part» the contact piece in resilient contact with the other associated electrodes (4 _b , 4 _r ) and so a mutual conductive connection is created between them. 6. Color picture tube with a plurality of electron guns each comprises a plurality of axially aligned electrodes, which by means of conductive support members along a pair of laoliorhalterern are mounted, each holding element an arcuate electrode receiving part in its center and two end Absohnitte has each electrode in the electrode receiving part of the stop ee learned te s is mounted and the two end sections with 9 0 9830/0856 _0RlGlNAL inspected one. Pair of insulating brackets connected SiSiS ₉ dädureli that one of the brackets (10) is attached to one of the associated electrodes (4 Jl of the entepreeiiiden electron cannon units and with loose tongue decoids t12 | 13) is provided »the euf die The remaining external electrodes (4b "4r) must be turned and touch them resiliently when the Halteel®"
ment is connected to the pair of insulating brackets * 909830/0856 Blank page