DE281767C

DE281767C -

Info

Publication number: DE281767C
Application number: DENDAT281767D
Authority: DE

Description

Pa te ν τ-Ansprüche:Pa te ν τ claims:

1. Elektrische Metallfadenglühlampe, deren Glühfaden in Form von Buchstaben, Zahlen oder bildlichen Darstellungen auf einer undurchsichtigen Platte angeordnet ist, dadurch gekennzeichnet, daß der für die Bildung des Buchstabens o. dgl. nicht benötigte Teil des Fadens auf der Rückseite der Platte untergebracht ist und ebenfalls zur Beleuchtung benutzt wird.1.Electric metal filament light bulb, the filament of which is in the form of letters, Numbers or images arranged on an opaque plate is, characterized in that the for the formation of the letter o. The like. Not required part of the thread is housed on the back of the plate and is also used for lighting.

2. Elektrische Metallfadenglühlampe nach Anspruch i, dadurch gekennzeichnet, daß der auf der Rückseite der Platte angeordnete Faden selbst wieder einen Buchstaben, eine Zahl o. dgl. bildet.2. Electric metal filament light bulb after Claim i, characterized in that the arranged on the back of the plate The thread itself again forms a letter, a number or the like.

3. Elektrische Metallfadenglühlampe nach Anspruch 1 und 2, dadurch gekennzeichnet, daß, falls die zur Bildung zweier Buchstaben o. dgl. benötigte Fadenlänge für · den gewünschten Widerstand nicht ausreicht, der überschüssige Faden um die Platte herumgewickelt wird, so daß infolge der abkühlenden Wirkung der Platte ein Leuchten dieses Teils des Fadens vermieden wird.3. Electric metal filament incandescent lamp according to claim 1 and 2, characterized in that that, if the thread length required to form two letters or the like is not sufficient for the desired resistance, the excess thread is wrapped around the plate, so that due to the cooling effect of the plate a glow of this part of the thread is avoided.

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims

IMPERIAL

PATENT OFFICE.

In the case of electric light bulbs, their illuminants are letters, numbers or images form, it is necessary because the threads of letters, numbers or the like. Different Length have to adjust the total resistance of the lamps to a certain level. To this for the vote The required additional resistance and its energy consumption is to be used according to the invention of the letters or the like forming part of the thread attached to an opaque plate and made so long, that the desired resistance is achieved. This excess thread will be on the back the plate housed in some way. It is thereby achieved that this thread attached to the back has a light-emitting effect and also for lighting can be used without affecting the effect of the luminous letter on the front of the plate will.

The filament on the back can also itself be designed as a letter so that a lamp, depending on its position, is used for two letters or the like can be. In this way one saves on lamps when composing certain words and the like.

Should the ^ required. Thread length for formation two letters or the like are not yet used up, the excess Thread to be wrapped around the plate, whereby due to the cooling effect of the ·> Plate a glowing of this part of the thread and thus a disruptive effect is avoided will. In this way, the adjustment to the desired resistance is achieved.

In Fig. Ι a lamp is shown, the ■ filament forms an L on the front.

Fig. 2 shows the back of this lamp, on which the filament, for example is attached in a zigzag shape.