JP2003514363A - Lamp manufacturing method - Google Patents

Abstract

(57) Abstract: In a method for manufacturing a lamp, a lamp vessel (1) has at least one open end (5) closed in a pump head (2) with an electrode device and a connecting pin (10). It is hermetically inserted by a holder (6) carrying a plate (7). The closing plate (7) has an outer profile slightly smaller than the inner profile of the open end (5) of the lamp vessel (1), whereby the lamp vessel (1) is evacuated via the pump head (2). , And gas is enclosed. Subsequently, the edge of the closure plate (7) and the lamp vessel (1) are heated at the location of the closure plate (7) and are hermetically connected with the edge of the closure plate (7). Thereafter, the protruding end (5) of the lamp vessel (1) is cut off.

Description

Detailed Description of the Invention

TECHNICAL FIELD The present invention relates to a method for manufacturing a lamp according to the preamble of claim 1. This lamp manufacturing method comprises a lamp vessel having at least one cylindrical open end into which an electrode device is introduced, the open end of which is then closed in an airtight manner. Is.

[Prior Art] In a conventionally used manufacturing method of a lamp (incandescent lamp or straight tube fluorescent lamp), an electrode device is introduced into a lamp container by a stem sealing method and hermetically sealed. . Only with very small tube diameters can the electrode device be placed in the open end and collapsed.

The stem sealing method requires an additional exhaust tube within the stem to evacuate the lamp, clean and enclose the required material. Since this exhaust pipe must be hermetically closed after the encapsulation process, an additional manufacturing step is required.

Furthermore, in the case of the stem sealing method, a metal or plastic base which is fixed to the stem sealing portion by a bonding material is additionally required. Stem sealing and base fixing require labor intensive mechanical technology.

[Description of the invention] An object of the present invention is to provide a method of manufacturing a lamp according to the preamble of claim 1, wherein the exhaust pipe and the base can be omitted, and the mechanical technology for manufacturing the lamp can be simplified. Especially.

This problem is solved by the features of claim 1. Advantageous embodiments are described in the dependent claims.

In the method according to the invention, the lamp vessel is hermetically inserted with at least one cylindrical open end thereof in a pump head, the pump head being a holder, a closure plate with electrode devices and connecting pins The closure plate bears perpendicular to the axis of the cylindrical end of the lamp vessel when the vessel is inserted into the pump head. The holder is movable along the axis of the lamp vessel. The closure plate has an outer contour slightly smaller than the inner contour of the open end of the lamp vessel. This allows the lamp vessel to be evacuated via the pump head, cleaned and filled with the desired amount of gas and possibly another encapsulating material. Thereafter, the energy source externally heats the edge of the closing plate and the lamp vessel at the position of the closing plate, whereby the end of the lamp vessel is contracted at the position of the closing plate, and the edge of the closing plate is hermetically sealed. Bind to. Finally, the open end of the lamp vessel projecting beyond the closure plate is cut off.

The method according to the invention is the simplest if the cylindrical end of the lamp vessel has a circular inner contour and the closure plate has a circular edge.

It is advantageous for the energy source to rotate around the lamp vessel and the closure plate during the heating process in order to hermetically close the lamp vessel. However, for certain containers, it is advantageous for the lamp container and the closure plate to rotate at the energy source during the heating process. A gas burner is preferably used as the energy source.

If the lamp to be manufactured is a fluorescent lamp having a straight tube lamp vessel, and if a glass tube having a continuous circular inner cross section and having both ends open is used for manufacturing the lamp, the both ends thereof are used. Are inserted simultaneously or one after the other into a pump head having a circular closure plate fixed to the holder and provided with electrode devices and connection pins.

In the case of an incandescent light bulb having a light bulb shaped lamp vessel, a light bulb shaped glass vessel having a cylindrical open end is used for manufacturing, and the cylindrical open end is fixed to a holder and connected to an electrode device. It is inserted into a pump head having a circular closure plate with pins.

Advantageously, the electrode device is composed of a mounting member and a filament fixed to it, which are mounted on the side of the closure plate opposite the open end of the lamp vessel. The electrical connection pin is attached to the side surface of the closing plate on the open end side of the lamp vessel, and is electrically connected to the filament through the lead.

Advantageously, the closure plate is made of insulating glass. The closure plate can also consist of metal, but in this case the leads are surrounded by an insulating material, for example glass solder, in the area of the penetration of the closure plate. However, it is also possible for the closure plate to consist of a glass stem with a metal ring attached to its edge.

If the filament carries the emitter, it is advantageous if the leads are electrically connected to a power supply to form the emitter.

[0015]   The invention further relates to a lamp manufactured according to the method according to the invention.

DESCRIPTION OF THE FIGURES In the following, the method according to the invention will be explained in detail with reference to the following figures. FIG. 1 shows the starting process configuration of the production method according to the invention for producing a straight tube low-pressure discharge lamp. FIG. 2 shows a process configuration for heating the closing plate and the lamp vessel. FIG. 3 shows the process configuration after cutting off the protruding end of the lamp vessel. FIG. 1a shows the starting process configuration of the manufacturing method according to the invention for manufacturing a light bulb shaped incandescent lamp.

FIG. 1 shows the starting process configuration of the production method according to the invention for producing a straight tube low-pressure discharge lamp.

A straight tube lamp vessel 1 having a circular inner cross-section has its opposite ends inserted in respective pump heads 2, in which case two sealing devices 3, 4 seal the surroundings in an airtight manner. ing. In addition, in FIGS. 1 to 3, the pump head 2 is shown for convenience.
Only one end 5 inserted therein is shown.

The pump head 2 further carries a glass closing plate 7 with a holder 6. The closing plate 7 has a filament 8 and a built-in cap 9 on the side opposite to the pump head 2.
The electrode device composed of and is fixed, and the connecting pin 10 is provided on the side surface on the pump head 2 side.
Is fixed. The connection pin 10 is connected to the filament 8 via the lead 11. Furthermore, the connecting pin 10 is electrically connected via a cable 12 to form a getter material.

The straight tube lamp vessel 1 is evacuated through the opening 13 in the pump head 2,
It is washed and encapsulated with the required encapsulation material. This is indicated by the double-headed arrow.

FIG. 2 shows the next process step of the method according to the invention. The process configuration is in this case approximately the same as the process configuration described in detail with reference to FIG. However, in addition, an energy source in the form of a gas burner 14 is additionally arranged at the closing plate 7. By rotating the lamp vessel 1 and the closing plate 7 by means of the pump head 2, the pump vessel 1 and the edge of the closing plate 7 at this point are heated, whereby the lamp vessel 1 at this point is contracted, It is airtightly connected to the edge of the closing plate 7.

Subsequent process steps show the end 14 separated from the hermetically closed lamp vessel 1, the process arrangement of which is shown in FIG. Starting from FIG. 2, after introducing the atmosphere into the pump head 2 through the opening 13 and by moving the pump head 2, the end 14 is pulled away from the lamp 15 and separated, and the separation point of the lamp 15 is separated. It is sealed. After further pulling the holder 6 away from the connecting pin 10 and the pump head 2, the finished lamp 15 is removed and after loosening the sealing device 3, the end 14 is removed.

Instead of a straight tube low-pressure discharge lamp, the method according to the invention can also be applied in a lamp having a bulb-shaped lamp vessel, such as an incandescent bulb.

FIG. 1 a shows the starting process configuration of a manufacturing method for manufacturing an incandescent light bulb. This process configuration is in good agreement with the process configuration shown in FIG. 1 for a straight tube low pressure discharge lamp. For this reason, the same parts in the process configuration are given the same numbers as in FIG. Instead of a straight tube lamp vessel, here a light bulb shaped lamp vessel 16 has its cylindrical open end 17 inserted into the pump head 2. The closure plate 18 carries a filament 19 on the side facing away from the pump head 2, which filament 19 is connected to a connecting pin 21 via a lead 20.

The subsequent process steps for producing an incandescent light bulb are such that the basic process steps correspond to the steps for producing a straight tube low-pressure discharge lamp. Therefore, illustration of the subsequent process steps is omitted.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a starting process configuration of a manufacturing method according to the present invention for manufacturing a straight tube low-pressure discharge lamp, and FIG. 1a is a manufacturing diagram according to the present invention for manufacturing an incandescent lamp. 1 is a schematic diagram showing a process configuration at the start of the method.

[Fig. 2]   Schematic which shows the process structure at the time of heating a closing plate and a lamp vessel.

[Figure 3]   FIG. 7 is a schematic process diagram showing the configuration after the protruding end of the lamp vessel is cut off.

[Explanation of symbols]

    1 Straight tube lamp vessel     2 pump heads     3,4 sealing device     6 holder     7 Closure plate     8 filament   10 connection pins   11 leads   12 cables   13 openings   14 gas burner   15 lamps   16 light bulb shaped lamp containers   17 Open end   18 Closure plate   19 filament   20 leads   21 connection pin

─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Fischer, Gudrun             Federal Republic of Germany Day 82110 Germe             Ring Haydn Strasse 11 (72) Inventor Heider, Jürgen             Federal Republic of Germany Day-81547 Mün             Hen Sevener Strasse 116 (72) Inventor Kolbek, Roland             Federal Republic of Germany Day-86316 Free             Toberg Johann Wake 5 (72) Inventor Reichhardt, Jürgen             Federal Republic of Germany Day-86830 Shuv             Warp Munich Nebelhornst             Race 61 (72) Inventor Shultsuki, Joachim             Federal Republic of Germany Day-86161 August             Sburg Erhard-Kestner-Sch             Trace 27 (72) Inventor Weinhard, Erolph             Federal Republic of Germany Day-86420 D             Dorf Grenzstrasse 6 (72) Inventor Conrad, Anthony             Federal Republic of Germany Day-85521             Brun Hiltenstrasse 2B (72) Inventor Scharf, Johannes             Federal Republic of Germany Day-80469 Mün             Hen Fraunhofer Strasse             36 F term (reference) 5C012 JJ01 JJ06 PP08 TT08                 5C043 AA11 AA13 CC09 DD11

Claims (15)

[Claims] 1. A lamp vessel (1; 16) having at least one cylindrical open end (5; 17) into which an electrode device is introduced, which open end is then closed in a gas-tight manner. In the method for producing a lamp (15) comprising a pump head (2; 16), the lamp vessel (1; 16) is hermetically inserted at least one open end (5; 17) into the pump head (2). ) Is the lamp vessel (1; 1
6) A holder (6) which is movable along the axis of (6), which comprises an electrode device and a connecting pin (10).
21) and the closing plate (7; 18) is inserted into the pump head (2) when the lamp plate (1; 16) is inserted into the lamp head (1; 16). Carried perpendicular to the axis of the cylindrical end of the lamp, the closure plate (7; 18) being on the outside corresponding to the inner contour of the cylindrical end (5; 17) of the lamp vessel (1; 16). The inner wall of the cylindrical end (5; 17) of the lamp vessel (1; 16) and the closure plate (7) having a contour
18) having a size that defines the distance between the edges of the lamp vessel (1; 16) and its cylindrical end (5; 17) and pump head (2).
Exhausted through and cleaned, filled with the desired amount of gas and optionally another encapsulant, and then externally from the edge of the closure plate (7; 18) and the lamp vessel (1; 16) and are heated at the position of the closing plate (7; 18), whereby the end (5; 17) of the lamp vessel (1; 16) is contracted at the position of the closing plate (7; 18), An airtight connection is formed with the edge of the closure plate (7; 18), and finally the open end (5; 17) of the lamp vessel (1; 16) protruding beyond the closure plate (7; 18). A method of manufacturing a lamp, which is characterized by being separated. 2. The cylindrical end (5; 17) of the lamp vessel (1; 16) has a circular inner contour and the closure plate (7; 18) has a circular edge. The method of claim 1. 3. Method according to claim 1, characterized in that the energy source rotates around the lamp vessel and the closure plate during the heating process. 4. Method according to claim 1, characterized in that during the heating process the lamp vessel (1) and the closure plate (7) rotate at the energy source. 5. Method according to claim 3 or 4, characterized in that the energy source is a gas burner (14). 6. The lamp to be produced is a fluorescent lamp (15) having a straight tube lamp vessel (1), which has a continuous circular inner cross section for producing the lamp (15) and has both ends (5). A circular closed plate (7) is used which has a glass tube with an open end, and whose both ends are fixed to the holder at the same time or one after another and which is provided with an electrode device and a connecting pin (10).
Method according to claim 1, characterized in that it is inserted in a pump head (2) having 7. The lamp to be produced is an incandescent lamp with a bulb-shaped lamp vessel (16), a bulb-shaped glass vessel with a circular inner cross section and an open end (17) being used for the production. 2. Method according to claim 1, characterized in that its open end (17) is inserted into a pump head (2) having a circular closure plate (18) fixed to a holder (6). 8. The electrode device is composed of a filament (8; 19), which filament (8; 19) of the closure plate (7; 18) has an open end (5; 17) of the lamp vessel (1; 16). The method according to claim 1, characterized in that it is mounted on the side opposite to (1). 9. A connecting pin (10; 21) is attached to the side of the closure plate (7; 18) on the open end (5; 17) side of the lamp vessel (1; 16) and the lead (11;
2. Method according to claim 1, characterized in that it is electrically connected to the filament (8; 19) via 20). 10. Method according to claim 1, characterized in that the closing plate (7) is made of insulating glass. 11. The method according to claim 9, characterized in that the closure plate is made of metal and the leads are surrounded by an insulating material in the penetration area of the closure plate. 12. Method according to claim 1, characterized in that the closure plate is made of a glass disc, on the edge of which a metal ring is mounted. 13. The method of claim 11, wherein the insulating material comprises glass braze. 14. The filament (8) carries the emitter and the lead (20).
9. The method of claim 8 wherein the is electrically connected to a power source to form the emitter. 15. A lamp manufactured by the method according to claim 1. Description: