DE4016590A1 - Filter for electrostatic charge dissipation from picture tubes - comprises conductive liq. filling space between transparent sheets placed few centimetres in front of screen - Google Patents

Filter for electrostatic charge dissipation from picture tubes - comprises conductive liq. filling space between transparent sheets placed few centimetres in front of screen

Info

Publication number
DE4016590A1
DE4016590A1 DE19904016590 DE4016590A DE4016590A1 DE 4016590 A1 DE4016590 A1 DE 4016590A1 DE 19904016590 DE19904016590 DE 19904016590 DE 4016590 A DE4016590 A DE 4016590A DE 4016590 A1 DE4016590 A1 DE 4016590A1
Authority
DE
Germany
Prior art keywords
filter
screen
electrostatic charge
liq
transparent sheets
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.)
Withdrawn
Application number
DE19904016590
Other languages
German (de)
Inventor
Bruno Gruber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19904016590 priority Critical patent/DE4016590A1/en
Publication of DE4016590A1 publication Critical patent/DE4016590A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86Vessels; Containers; Vacuum locks
    • H01J29/867Means associated with the outside of the vessel for shielding, e.g. magnetic shields
    • H01J29/868Screens covering the input or output face of the vessel, e.g. transparent anti-static coatings, X-ray absorbing layers

Landscapes

  • Elimination Of Static Electricity (AREA)

Abstract

Two transparent sheets (1a, 1b) a few millimetres apart are sealed along their sides and base and partly along the top. The space between them is filled with electrically conductive liq. (2) preventing build-up of electrostatic charge, which is conducted away by a wire (4) to earth (5). The sheets (1a, 1b) are interconnected at several points (3) to prevent forcible sepn. by pressure of the liq. The filter may stand in a frame (6) or be bolted (7) directly to the picture tube. ADVANTAGE - Easily mfd. filter with practically unlimited lifetime does not interfere with viewing in any way.

Description

Die Erfindung betrifft eine einfach herstellbare Einrich­ tung, die die elektrostatische Aufladung eines Bild­ schirms vom Betrachter isoliert und gegebenenfalls ableitet, ohne die freie Sicht zu behindern.The invention relates to a simple to manufacture device tion, the electrostatic charge of an image screen isolated from the viewer and if necessary dissipates without obstructing the clear view.

Es sind zahlreiche Einrichtungen bekannt, die die elektro­ statische Aufladung von Bildschirmen ableiten bzw. abschirmen sollen.There are numerous known devices that electro derive static charge from screens or should shield.

So werden feinste Metallgeflechte oder elektrisch leitende Gitternetze auf den Bildschirmen oder auf Kunststoffplatten oder Folien zwischen Betrachter und Bildschirm angebracht, die diese Aufladungen ableiten sollen.This is how the finest metal mesh or electrically conductive Grids on the screens or on plastic plates or foils between the viewer and the screen, which are supposed to derive these charges.

Auch mit elektrisch leitenden Chemikalien kann eine Bildschirmaufladung abgeleitet werden.One can also use electrically conductive chemicals Screen charging can be derived.

Die bekannten Einrichtungen stören entweder die freie Sicht, sind sehr teuer in der Herstellung oder haben eine sehr begrenzte Abschirmwirkung oder Wirkungsdauer wie z. B. die äußerlich auf den Bildschirm oder Filtergläser aufgetragenen elektrisch leitenden Chemikalien.The known facilities either interfere with the free Point of view, are very expensive to manufacture or have one very limited shielding effect or duration of action like e.g. B. the outside of the screen or filter glasses applied electrically conductive chemicals.

Aufgabe der Erfindung ist es nun, ein Filter zu schaffen, das die genannten Probleme beseitigt, sehr einfach herge­ stellt werden kann, die Sicht in keiner Weise behindert und eine praktisch unbegrenzte Lebensdauer aufweist. The object of the invention is now to create a filter that eliminates the problems mentioned, very simple can not be obstructed in any way and has a virtually unlimited lifespan.  

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß zwei transparente Scheiben aus Glas oder Kunststoff im Abstand von wenigen Millimetern oder Zentimetern aufeinander liegend, miteinander am Randbereich verbunden sind, daß die Scheiben einen Behälter zur Aufnahme einer Flüssigkeit bilden, daß sich zwischen den beiden Scheiben eine zumindest schwach elektrisch leitende Flüssigkeit wie zum Beispiel Wasser befindet, daß die Scheiben zwischen dem Betrachter und dem Bildschirm angebracht sind und die Flüssigkeit gegebenenfalls an einem beliebigen Punkt geerdet wird.According to the invention the object is achieved in that two transparent panes of glass or plastic at a distance of a few millimeters or centimeters lying on top of each other, connected to each other at the edge area are that the discs are a container for holding a Form liquid that is between the two disks an at least weakly electrically conductive liquid such as water, that the disks are between are attached to the viewer and the screen and the Liquid if necessary at any point is grounded.

In vorteilhafter Weise können die Scheiben an mehreren Stellen punktförmig miteinander verbunden sein, damit der Druck der Flüssigkeit die Scheiben nicht auseinander drückt. Das Filter kann in einem Sockel stehend frei vor dem Bildschirm angebracht sein.Advantageously, the disks on several Make points connected to each other so that the Pressure of the liquid does not push the disks apart. The filter can stand freely in front of the Screen attached.

Das Filter kann direkt an einem Bildschirm angeschraubt oder angeklebt sein.The filter can be screwed directly onto a screen or be glued.

Das Filter kann luftdicht am Bildschirm befestigt sein, so daß Staubpartikel sich nicht zwischen Filter und Bildschirm festsetzen können.The filter can be attached to the screen in an airtight manner that dust particles do not get between the filter and the screen can fix.

In den Luftstrom zwischen Filter und Bildschirm kann ein Staubfilter eingesetzt sein, so daß das Filter in der Doppelfunktion auch als elektrostatischer Staubsammler dient.In the airflow between the filter and screen can be a Dust filter must be used so that the filter in the Dual function also serves as an electrostatic dust collector.

Mit einer Drahtverbindung kann die Flüssigkeit z. B. mit dem Schutzkontakt der Steckdose, dem Gehäuse des Bildschirm­ gerätes oder an einer beliebigen Stelle geerdet werden, um die Aufladungen der Flüssigkeit abzuleiten.With a wire connection, the liquid z. B. with the protective contact of the socket, the housing of the screen device or be earthed at any point to to drain charges of a liquid.

Die Flüssigkeit kann mit löslichen Farben leicht getönt werden.The liquid can easily be tinted with soluble colors.

Die einen Flüssigkeitsbehälter bildenden Scheiben können an einer Stelle oben offen oder ringsum ganz geschlossen sein.The disks forming a liquid container can on be open at one point or completely closed all around.

Es kann ein Einfüllstutzen mit Schraubverschluß zum einfüllen der Flüssigkeit vorgesehen werden. It can be filled with a filler neck with screw cap the liquid can be provided.  

Die Zeichung zeigt das erfindungsgemäße Filter.The drawing shows the filter according to the invention.

Das Filter hat zwei transparente Scheiben 1a und 1b, die am Randbereich im Abstand von wenigen Millimetern an den Seiten, der Bodenfläche und teilweise auf der Oberkante abgedichtet sind.The filter has two transparent discs 1 a and 1 b, which are sealed at the edge area at a distance of a few millimeters on the sides, the bottom surface and partially on the upper edge.

Zwischen den beiden Scheiben 1a und 1b befindet sich die elektrisch leitende Flüssigkeit 2, die die elektro­ statische Aufladung verhindert.Between the two discs 1 a and 1 b is the electrically conductive liquid 2 , which prevents electrostatic charging.

Die beiden Scheiben 1a und 1b sind in einem Sockel 6 gehalten.The two disks 1 a and 1 b are held in a base 6 .

Das Filter wird parallel zwischen den Betrachter und den Bildschirm gestellt.The filter is parallel between the viewer and put the screen.

Das Filter steht vorteilhafterweise in einem Abstand von wenigen Zentimetern direkt vor dem Bildschirm. Die dem Betrachter zugewandte Seite weist eine erheblich verminderte elektrostatische Aufladung auf, so daß das Problem von elektrisch geladenen Staubteilchen, die sich zwischen Bildschirm und Betrachter hin- und herbewegen beseitigt ist.The filter is advantageously at a distance of a few centimeters directly in front of the screen. The side facing the viewer has one considerably decreased electrostatic charge, so that Problem of electrically charged dust particles that can move back and forth between the screen and the viewer is eliminated.

Ein in die Flüssigkeit 2 eintauchender Draht 4 leitet elektrostatische Aufladungen zu einem beliebigen Erd­ potential 5 ab.A immersed in the liquid 2 wire 4 discharges electrostatic charges to any earth potential 5 .

Die Scheiben 1a und 1b sind in dieser Ausführung an mehreren Stellen 3 punktförmig miteinander verbunden und verhindern das Auseinanderdrücken der Scheiben 1a und 1b durch den Wasserdruck.In this embodiment, the disks 1 a and 1 b are connected to one another at several points 3 and prevent the disks 1 a and 1 b from being pushed apart by the water pressure.

Anstelle des Sockels 6 kann das Filter zum Beispiel mit Laschen 7 direkt an einem Bildschirm befestigt werden.Instead of the base 6 , the filter can be attached directly to a screen, for example with tabs 7 .

Claims (1)

Filter zur Ableitung von elektrostatischen Aufladungen an Bildschirmen, dadurch gekennzeichnet, daß zwei transparente Scheiben (1a und 1b) aus Glas oder Kunststoff im Abstand von wenigen Zentimetern oder Milli­ metern aufeinanderliegend im Randbereich miteinander verbunden sind, daß die beiden Scheiben (1a und 1b) einen Behälter für eine Flüssigkeit (2) bilden, daß sich zwischen den Scheiben eine zumindest schwach elektrisch leitende Flüssigkeit (2) wie z. Beispiel Wasser befindet und die Flüssigkeit gegebenenfalls an einem beliebigen Punkt geerdet ist.Filter for dissipating electrostatic charges on screens, characterized in that two transparent panes ( 1 a and 1 b) made of glass or plastic are connected to one another in the edge region at a distance of a few centimeters or millimeters, that the two panes ( 1 a and 1 b) form a container for a liquid ( 2 ) that an at least weakly electrically conductive liquid ( 2 ) such. For example, there is water and the liquid may be grounded at any point.
DE19904016590 1990-05-23 1990-05-23 Filter for electrostatic charge dissipation from picture tubes - comprises conductive liq. filling space between transparent sheets placed few centimetres in front of screen Withdrawn DE4016590A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904016590 DE4016590A1 (en) 1990-05-23 1990-05-23 Filter for electrostatic charge dissipation from picture tubes - comprises conductive liq. filling space between transparent sheets placed few centimetres in front of screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904016590 DE4016590A1 (en) 1990-05-23 1990-05-23 Filter for electrostatic charge dissipation from picture tubes - comprises conductive liq. filling space between transparent sheets placed few centimetres in front of screen

Publications (1)

Publication Number Publication Date
DE4016590A1 true DE4016590A1 (en) 1991-11-28

Family

ID=6407022

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904016590 Withdrawn DE4016590A1 (en) 1990-05-23 1990-05-23 Filter for electrostatic charge dissipation from picture tubes - comprises conductive liq. filling space between transparent sheets placed few centimetres in front of screen

Country Status (1)

Country Link
DE (1) DE4016590A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616355A1 (en) * 1993-03-17 1994-09-21 Koninklijke Philips Electronics N.V. Display device and cathode ray tube
US5406443A (en) * 1993-08-11 1995-04-11 Cooter; Kevin L. Static electricity dissipation system for computers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616355A1 (en) * 1993-03-17 1994-09-21 Koninklijke Philips Electronics N.V. Display device and cathode ray tube
BE1006922A3 (en) * 1993-03-17 1995-01-24 Philips Electronics Nv An image display device and the cathode ray tube.
US5682077A (en) * 1993-03-17 1997-10-28 U.S. Philips Corporation Display device and cathode ray tube
US5406443A (en) * 1993-08-11 1995-04-11 Cooter; Kevin L. Static electricity dissipation system for computers
US5666259A (en) * 1993-08-11 1997-09-09 Cooter; Kevin L. Static electricity dissipation device for computers

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