DE903015C - Process for the production of protective caps for cathode ray tubes - Google Patents
Process for the production of protective caps for cathode ray tubesInfo
- Publication number
- DE903015C DE903015C DEF4501D DEF0004501D DE903015C DE 903015 C DE903015 C DE 903015C DE F4501 D DEF4501 D DE F4501D DE F0004501 D DEF0004501 D DE F0004501D DE 903015 C DE903015 C DE 903015C
- Authority
- DE
- Germany
- Prior art keywords
- cathode ray
- ray tubes
- production
- protective caps
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 title claims description 3
- 230000001681 protective effect Effects 0.000 title claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/87—Arrangements for preventing or limiting effects of implosion of vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/87—Means for avoiding vessel implosion
- H01J2229/875—Means substantially covering the output face, e.g. resin layers, protective panels
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Description
Kathodenstrahlröhren finden mannigfache Anwend@ung nicht nur in der Meßtechnik als Oszillographenröhren, sondern u. a. jetzt auch zur Bildwiedergäbe in Fernseh-Heimempfängern. Die Kathodenstrahlröhren bestehen meist aus einem evaktierten Glaskolben, der auf der dem Beschauer zugewendeten Seite nur eine schwache Wölbung besitzt. In manchen Fällen wird die Vorderseite der Kathodenstrahliröhre auch völlig plan: ausgeführt. Der einseitig nur von außen auf dien evakuierten Glaskoliben wirkende atmosphärische Luftdruck beansprucht die ebene oder nur schwach gewölbte Vorderseite der Kathodenstrahlröhre erheblich. insbesondere bei großem Schirmdurchmesser.Cathode ray tubes are used in many different ways and not only in the Measurement technology as oscilloscope tubes, but among other things. now also for picture reproduction in home television receivers. The cathode ray tubes usually consist of an evacuated one Glass bulb, only a slight curve on the side facing the viewer owns. In some cases, the face of the cathode ray tube also becomes whole plan: executed. The one that only acts on the evacuated glass flasks from the outside Atmospheric air pressure stresses the flat or only slightly curved front the cathode ray tube significantly. especially with a large screen diameter.
Man hat versucht, die verhältnismäßig leicht. zerbrechliche Vorderseite der Kathodenstrahlröhre durch einten zusätzlichen Einbau von Sicherheitsscheiben und außerdem die den Leuchtschirm der Kathodenstrahlröhren betrachtenden Personen bei Implosionen vor Verletzungen durch Glassplitter zu schützen. Die bisher bekanntgewordenen Angrdnungen besitzen mehrere Nachteile. Insbesondere schützen nie in Fernsehempfängern eingebauten Sicherheitsscheiben zwar dien Betrachter eines Fernsehempfängers, nicht aber die mit dem Einbau bzw. dem Auswechseln der Kathodenstrahlröhren beschäftigten Personen. Weiterhin ist der zusätzliche Platzbedarf für diese Sicherheitsscheiben in manchen Fällen störend. Auch läßt,sich eine Staubansammlung zwischen der Sieherheitsschieibe und der Braunschen Röhre nicht immer auf .die Dauer verhindern. Bei oder Verwendung als Oszillographen.-röhre ergeben sich schließlich Ungenauigkeiten bei der Ausmessung von Oszsllogrammen. Die Erfindung bezweckt, die vorstehend genannten Nachteile ohne besondreren zusätzlichen. Aufwand zu vermeid. Erfindungsgemäß wird zur Herstellung von Schutzkappen für Kathodenstrahl.-röhren u. dgl. eine Kappe aus qwelffähigem Material zum Quellen gebracht und in diesem Zustand über den zu schützenden Teil der Kathodenstrahlröhre gezogen und: @dann derart einem Trodknungsprozeß unterworfen, dlaß nach dem Trocknen die Kappe dien betreffenden Teil,der Kathodenstrahlröhre mit einer fest anliegenden- Haut überzieht.One has tried that relatively easily. fragile front the cathode ray tube by installing additional safety panes and also the people looking at the fluorescent screen of the cathode ray tubes to protect against injuries caused by glass splinters in the event of implosions. The ones that have become known so far Foundations have several disadvantages. In particular, never protect in television receivers built-in safety panes serve the viewer of a television receiver, not but those who were busy installing or replacing the cathode ray tubes Persons. Furthermore, there is the additional space requirement for these safety panes annoying in some cases. There is also a build-up of dust between the security panel and the Braun tube does not always prevent the duration. When or in use as an oscilloscope tube, there are ultimately inaccuracies in the measurement of oszsllograms. The invention aims to avoid the disadvantages mentioned above special additional. Avoid effort. According to the invention for production of protective caps for cathode ray tubes and the like Material brought to swell and in this state over the part to be protected pulled out of the cathode ray tube and: @then subjected to such a process, After drying, let the cap serve the relevant part, the cathode ray tube covered with a tightly fitting skin.
Im nachstehenden wird,die Erfindung an Hand der ein AusführungsbeispieYdarstellenden Figur beschrieben. Die deren Leuchtschirm geschützt werden so11, ist mit i bezeichnet. Rechts daneben ist die Kappe 2 aus quelIfähigem Material dargestellt. Bei Verwendung von transparentem Material für die Kappe wird die Betrachtung dies Leuchtschirms in keiner Weise gehindert, andererseits; haftet die Kappe infolge der konischen Form des Röhrenkolbens .besonders gut und schützt daher dien Betrachter vor Verletzungen bei Röhrenimplosionen.In the following, the invention on the basis of an exemplary embodiment is illustrated Figure described. The luminescent screens that are protected so11 are denoted by i. To the right of it, the cap 2 made of swellable material is shown. Using of transparent material for the cap will allow viewing of this fluorescent screen in no way hindered, on the other hand; the cap adheres due to the conical Shape of the tubular piston. Particularly good and therefore protects the viewer from injury with tube implosions.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF4501D DE903015C (en) | 1943-01-22 | 1943-01-22 | Process for the production of protective caps for cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF4501D DE903015C (en) | 1943-01-22 | 1943-01-22 | Process for the production of protective caps for cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE903015C true DE903015C (en) | 1954-02-01 |
Family
ID=7084228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEF4501D Expired DE903015C (en) | 1943-01-22 | 1943-01-22 | Process for the production of protective caps for cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE903015C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE964531C (en) * | 1954-02-04 | 1957-05-23 | Siemens Ag | Electron beam tubes, in particular television tubes, with implosion protection |
| DE1163372B (en) * | 1961-03-11 | 1964-02-20 | Loewe Opta Ag | Implosion protection device for television picture tubes |
| DE1165167B (en) * | 1960-12-09 | 1964-03-12 | Philips Nv | Electron beam tubes for displaying images, the glass bulb of which is at least partially covered with a plastic layer |
| DE1165655B (en) * | 1962-10-23 | 1964-03-19 | Imp Rundfunk Und Fernsehwerk G | TV receiver with transparent plastic implosion protection film |
| DE1185300B (en) * | 1962-03-03 | 1965-01-14 | Telefunken Patent | Implosion protection device for cathode ray tubes |
| DE1191045B (en) * | 1961-01-31 | 1965-04-15 | Julius Neubauer | Implosion protection for a picture tube |
-
1943
- 1943-01-22 DE DEF4501D patent/DE903015C/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE964531C (en) * | 1954-02-04 | 1957-05-23 | Siemens Ag | Electron beam tubes, in particular television tubes, with implosion protection |
| DE1165167B (en) * | 1960-12-09 | 1964-03-12 | Philips Nv | Electron beam tubes for displaying images, the glass bulb of which is at least partially covered with a plastic layer |
| DE1191045B (en) * | 1961-01-31 | 1965-04-15 | Julius Neubauer | Implosion protection for a picture tube |
| DE1163372B (en) * | 1961-03-11 | 1964-02-20 | Loewe Opta Ag | Implosion protection device for television picture tubes |
| DE1185300B (en) * | 1962-03-03 | 1965-01-14 | Telefunken Patent | Implosion protection device for cathode ray tubes |
| DE1165655B (en) * | 1962-10-23 | 1964-03-19 | Imp Rundfunk Und Fernsehwerk G | TV receiver with transparent plastic implosion protection film |
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