DE417224C

DE417224C - Electric lettering glow lamp with inert gas filling

Info

Publication number: DE417224C
Application number: DEP45596D
Authority: DE
Original assignee: Julius Pintsch AG
Current assignee: Julius Pintsch AG
Publication date: 1925-08-15

Description

Die Erfindung bezieht sich auf eine sogenannte Schrift- oder Zeicheng'immücht-Lampe, und zwar auf eine Röhre, in welcher infolge der Füllung mit Edelgasen und des geringen Abstandes der festen Metallelektroden voneinander eine schon bei gebräuchlichen Lichtspannungen selbständig erfolgende Entladung aufrechterhalten werden kann, der zufolge die jeweils negative, zur Erzeugung von zusammenhängenden Schriftzügen verwendbare Elektrode sich mit helleuchtendem Glimmlicht überzieht.The invention relates to a so-called writing or drawing lamp, namely on a tube in which as a result of the filling with noble gases and the little Distance of the solid metal electrodes from each other already with common light voltages independently occurring discharge can be maintained, according to which the respective negative, for the generation of coherent Electrode that can be used for writing is covered with bright glowing light.

Um den Eindruck einer leuchtenden Schrift hervorzurufen, verfährt man bisher entweder in der Weise, daß man die Kathode in Form einer Schrift ausschneidet, biegt oder stanzt, oder ihr die Form eines großen, meist rechteckigen Bleches gibt, auf welchem man die Stellen, die nicht leuchten sollen, durch isolierende Auflagen abdeckt, oder schließlich in der Weise, daß man die Röhre in ein passend geformtes Transparent hineinschiebt. Das erstgenannte Verfahren ist in bezug auf den Wattverbrauch wirtschaftlicher, bereitet aber in fabrikatorischer Hinsicht gewisse Schwierigkeiten, auch verlieren die durch Abdecken der Kathode erzeugten Schriftzeichen infolge der Zerstäubungswirkung bald an Schärfe. Dagegen bedingt das andere Verfahren einen großen Verlust an Licht, da nur ein kleiner Teil der leuchtenden Fläche ausgenutzt wird.In order to create the impression of luminous writing, one has hitherto either proceeded in such a way that the cathode is cut out, bent or punched in the form of a font, or give it the shape of a large, mostly rectangular sheet on which you can put the Areas that should not shine, covered with insulating pads, or finally by sliding the tube into a suitably shaped banner. The former method is more economical in terms of watt consumption but in terms of manufacturing there are certain difficulties, which are also lost through covering of the cathode, characters soon became sharper as a result of the sputtering effect. On the other hand, the other procedure is conditional a great loss of light, since only a small part of the luminous surface is used will.

Die vorliegende Erfindung vereinigt nun bei einer Schriftglimmlicht-Lampe den Vorzug einfacher Herstellungsart mit demjenigen relativ geringen Stromverbrauches bei großer Schärfe der leuchtenden Zeichen. Das wird erzielt durch die Kombination eines aus einem oder mehreren auf einen geeigneten Rahmen zu schiebenden und sich lichtdicht überlappenden Teilen bestehenden Transparentes bekannter Art, welches in an sich bekannter Weise gegebencnfa'ls als Anode benutzt werden kann, mit einer oder mehreren netz- oder gewcbeförmigen Elektroden, wie sie an sich"^:als Kathoden für Giimmlichtlampen ebenfalls bekannt sind. Durch diese Vereinigung bekannter Einzelheiten wird im vorliegenden Falle dadurch eine neue technische Wirkung erreicht, daß der Stromverbrauch im Bereiche des anormalen Kathodenfalles bei der durch die Größe des Schriftzuges vorgeschriebenen Ausdehnung der Elektrode nur einen Bruchteil von dem beträgt, welcher bei der Verwendung von massiven Blechelektroden sich ergeben würde. Anscheinend hat das Glimmlicht, das sich innerhalb der Maschen des Netzes ausbildet, eine höhere Stabilität und eine für den vorliegenden Zweck günstigere Verteilung, derzufolge der Wattverbrauch noch weiter herabgesetzt werden kann, als dies der durch die Zwischenräume der Maschen bedingten Verringerung der stromabgebenden Fläche entspricht.The present invention now combines the advantage of a simple type of manufacture with a type of glowing lamp with relatively low power consumption with great sharpness of the luminous characters. This is achieved by combining a transparency of a known type, consisting of one or more parts to be pushed onto a suitable frame and overlapping in a light-tight manner, which can be used in a known manner as an anode, with one or more mesh-shaped or wire-shaped ones electrodes as per se ^"are as cathodes for Giimmlichtlampen also known by this union known details of a new technical effect is achieved in the present case in that the power consumption in the areas of the abnormal cathode fall in prescribed by the size of the lettering expansion of the. Electrode is only a fraction of that which would result from the use of solid sheet metal electrodes. Apparently, the glowing light that forms within the mesh of the network has a higher stability and a more favorable distribution for the present purpose, which means that the watt consumption is still far it can be reduced than this corresponds to the reduction in the area to be emitted by the meshes caused by the interstices.

Außerdem haben die netz- oder gewebeförmigen Elektroden den Vorzug, nach beiden Seiten hin Licht zu strahlen, so daß beide Seiten der Kathode für die Herstellung leuchtender Zeichen ausgenutzt werden können bzw. bei einseitiger Benutzung der Lichteindruck durch Reflexion an einer spiegelnden Wand, die von der Seite des Betrachters aus hinter dem kathodischen Netz steht, noch verstärkt werden kann.In addition, the mesh-shaped or fabric-shaped electrodes have the advantage after both Sides to shine light so that both sides of the cathode for making more luminous Signs can be exploited or, in the case of one-sided use, the light impression by reflection on a reflective wall that is behind from the side of the viewer the cathodic network stands, can still be strengthened.

Die Abb. 1 bis 8 veranschaulichen Ausführungsmögiichkeiten der gedachten Schriftglimmlicht-Lampe. In Abb. i, 2, 5, 7 und S ist angenommen, daß die Lampe für Gleichstrombetrieb eingerichtet sein soll. Die zylindrische Glasrohre 1, die an den Enden mitFigs. 1 to 8 illustrate possible embodiments the imaginary lettering glow lamp. In fig. I, 2, 5, 7 and p it is assumed that the lamp is to be set up for direct current operation. The cylindrical Glass tubes 1, which at the ends with

Claims

the usual power supply contacts 6, contains the sheet metal template 2, which is used in a manner known per se at the same time as an anode, from which the relevant characters are cut out or punched out. The cathode 3 consists in a manner also known per se of a fabric made of metal wire, for example iron wire, which shines brightly through the punched-out characters of the stencil. 4 is a reflective back wall. The assembly and mutual stiffening of these parts is achieved in a simple manner with the help of suitably distributed insulating bushes 5, for example made of magnesia or steatite, which stiffen the individual parts against one another. For example, for this purpose, 2 small lobes 8 made of sheet iron are attached by welding on the inside, which are inserted through the hole 3 'iFig. 3; the insulating bushes 5 are pushed through. The cathode network 3 is perforated at the points corresponding to the sockets 5 and is pushed onto the edge of the part 2 '; then the ring ι 'Γ Fig. 31 is put on. The net is then held between Γ and 2 '. The ends of the lobes 8 protruding from the bore of 3 'are turned over and thus hold 1' and 2 'and thus the electrodes together. For this purpose, the bore 3 'is advantageously rectangular in order to allow the narrow sheet-metal strips 8 to pass through. Fig. 4 shows schematically the design of such a lettering glow lamp for alternating current. In this case, 2 is useful = not as an electrode, but a further network w is added as a second electrode. Then 3 and w light up alternately, with the light of one network shining through the other. It is obvious that this lamp can also be used as a writing lamp on both sides. The fastening and mutual stiffening of all parts is carried out analogously to Fig. 3 by means of appropriately designed insulating bushes. In Fig. 2 and 4 it is assumed that the rear wall should consist of a reflector 4 only. Fig. 5, on the other hand, is intended to illustrate that the same template 2 (or one with a different inscription 1 as on the front) can also be arranged on the back. in which the luminous inscription does not need to be specially punched out or cut out from case to case, but can be put together from individual finished stencils Side lights must overlap by a certain width d. In order to hold the sheets in a certain position, small stops a are appropriately attached to the individual templates. These are inserted in the desired selection and order into guide channels of a frame 2 (Fig. 7), whereby the desired transparency is created around the luminous electrode 3 en will. Fig. 8 shows the same design on both sides of the electrode 3. Of course, these arrangements according to Figs. 7 and 8 can also be implemented with alternating current lamps according to Fig. 4. The lamp according to Fig. 4 can also be used in any polarity with direct current, if the meshes of the electrode fabric are wide enough to allow light from each electrode to pass through well on both sides. The power supply to the electrodes of the lamp described takes place in the manner previously customary in incandescent lamps and glow lamps, not shown in Fig. 1, by means of so-called melting feet through which the leads pass. The known ballast resistor, which is usually housed in a connection socket, is expediently evenly distributed over both ends of the tube, so that half of the resistor is accommodated in each socket. 95 patent claims:

1. Electric glow light lamp with noble gas supply, characterized by the union of one or more fabric or reticulated cathodes with one or more as required in one produced or composed of individual, partially overlapping parts set metal banners.

2. glow lamp according to claim 1, characterized in that the rear wall of the - possibly box-like - transparency from one Reflector.

3. glow lamp according to claim 1 and 2, characterized by insulating, sockets made of magnesia or steatite attached to the inside of the transparency, which stiffen the individual parts of the lamp installation against each other.

1 sheet of drawings.