KR20100005075A - Securing element for a discharge lamp and arrangement with such a securing element - Google Patents

Abstract

The invention relates to a securing element which is constructed for securing a relative position between a holding rod (3, 4) for an electrode (1, 2) of an electric lamp (I) and a support piece (5, 6) for supporting the holding rod (3, 4) and which has an annular form, wherein one inner side (101) of the annular form is constructed at least in some areas for engaging with a structured region (31) of the holding rod (3). The invention also relates to an arrangement with a holding rod for an electrode, a support piece, and a corresponding securing element.

Description

Fixed element of discharge lamp and arrangement having such fixed element {SECURING ELEMENT FOR A DISCHARGE LAMP AND ARRANGEMENT WITH SUCH A SECURING ELEMENT}

The present invention relates to a stationary element of a discharge lamp and an arrangement having such a stationary element.

High pressure discharge lamps, for example, HBO-lamps, because of their size and structure, are sensitive to impact loads that can occur under relatively strong forces in a short time. Lamps of this type can in particular be exposed to such impact loads during transport. If such a force action is carried out, in particular lamps having an output of 2 kW or more, especially 4 kW or more, increase the risk of lamp breakage due to the size of the electrodes. The resulting damage may render the lamp unusable. In particular, as a result, the occurrence of lower grade lamps is unavoidable, and the customer satisfaction also deteriorates.

The electrode system of the high-pressure discharge lamp includes a number of components, among which is commonly referred to as a small supporting roll and includes a support formed of quartz. The components, in particular the small quartz rolls, are finally fixed in the shank pipe, which, when melted, forms the bulb neck of the discharge lamp. Since the electrode systems in the high-pressure discharge lamps are melted vertically while the lamp is mounted, the movable members, in particular the support of the suspension system, are held or fixed so that the movable members do not dislocate or fall. It is essential.

A known example is that a thin strip of tantalum is inserted between a holding rod for an electrode and a support of this type, i.e., a small quartz roll, so that the position is shifted so that the support remains fixed to prevent dislocation. Should be. However, in the case of strips of this type, the members of the strip may break and fall into the discharge chamber of the discharge lamp, which may adversely affect lamp operation.

Furthermore, the centering between the individual members can be ensured by the strips only when a plurality of individual members are used. However, even in this case, the accuracy of centering is limited.

In addition, the damping effect of the known embodiments with respect to the accelerating force generated is relatively insufficient.

It is an object of the present invention to provide a stationary element for the component parts of a discharge lamp, in which relative positioning between the component parts can be ensured. In particular such positioning must be ensured at the time of manufacture of the electric lamp.

It is also an object of the present invention to provide an arrangement for a discharge lamp having such a fixed element, in which centering of components in addition to position fixing can also be implemented.

These objects are achieved by fixed elements and arrangements according to the independent claims.

The fixing element according to the present invention, which corresponds to the first aspect of the invention, is for fixing a relative position between a holding rod for an electrode of an electric lamp and a support surrounding the holding rod. The stationary element has a ring mold, in which case the inner surface of the ring mold is formed to be at least locally coupled to the structured area of the outer surface of the holding rod. By this embodiment a reliable positioning between the components of the electric lamp can be realized. Therefore, dislocation of the support can be prevented, in particular relative to the holding rod during manufacture.

In addition, the failure stability can also be increased by this embodiment of the fixing element, and in particular, the elastic effect can be increased in a short time impact load. In particular, if a relatively large electrode is fixed on the holding rod to generate a relatively large lever force in the system upon acceleration action, breakage of the fixed element and / or holding rod can be prevented.

The ring mold of the stationary element means a shape that is not only circular but also elliptical or otherwise unangled. However, the ring mold also refers to embodiments which are formed at least locally angled.

Preferably the ring mold is formed to be completely closed in the direction of rotation. With this embodiment, the centering between the mentioned components in addition to the reliable positioning can be assuredly ensured.

However, the ring mold may be formed to open in the rotational direction. In particular, in the case of a relatively elastic shape, the fixing element may also be installed laterally on the holding rod for the electrode.

Preferably the inner face of the ring mold has an inner diameter at least in one place that is smaller than the outer diameter of the outer structure edge of the structured area of the holding rod face. If a fastening element is provided on the holding rod, the diameter ratio between the ring mold and the structure edge is designed to ensure a reliable stop of the fastening element at the final position. As the fastening element passes the structure edge, locking can be ensured due to the size design of the diameter, thus preventing the fastening element from dislocating backward. Thereby the relative positions between the members can be reliably fixed.

Preferably at least one flexible locking element is arranged on the inner side of the ring mold to be coupled to the structured area of the holding rod. By the flexible embodiment of the locking element it may be easy to provide a stationary element on the holding rod and pass the structure edge without damage. As a result, locking can also be reliably implemented.

Thus, the fixing element preferably has a number of flexible small pins oriented towards the center point of the fixing element, the inner diameter of the pins being smaller than the outer diameter of the structure edge of the structured area of the holding rod.

When the safety disc is installed on the holding rod, the flexible locking elements are slightly bent and locked after crossing the structure edge.

Preferably, a plurality of flexible locking elements are formed on the inner side of the ring mold of the stationary element. This not only improves the relative position between the components, but also ensures accurate centering.

The plurality of locking elements can preferably be arranged at the same distance from each other in the direction of rotation of the ring-shaped stationary element. In particular, they may have the same shape and / or the same dimensions. Thereby a particularly symmetrical structure can be realized, which ensures particularly accurate centering and relative positioning between the members, especially in the case of cylindrical holding rods and cylindrical supports.

The stationary element is preferably formed of a high heat resistant flexible material. In particular, the fixing element may be formed at least partially of molybdenum and / or at least partly of tungsten.

Preferably the inner diameter of the ring mold is at least one place smaller than the outer diameter of the holding rod that is outside the structured area.

The elastic action of the flexible locking elements of the stationary element allows the generated impact force to be partially absorbed. This action can be achieved on the one hand through the temporal extension and on the other hand through the spatial distribution of the generated forces. Preferably for this purpose the fixing element can be suitably arranged in a recess in the support.

With this fixing element, the holding rod may not be deflected enough to hit or damage the fixing element by hitting the inner edge of the support. Thus, even in the case where a lever force is generated, a reliable positioning and centering can be ensured by the fixed element.

A further aspect of the present invention relates to a fixing element formed for fixing a relative position between a holding rod for electrodes of an electric lamp and a support for supporting the holding rod. The stationary element has one ring mold, in which case the inner face of the ring mold has an inner diameter which is at least locally smaller than the outer diameter of the holding rod. In particular, this diameter ratio is formed in the region of the final position of the fixed element. Therefore, in this fixed position, the fixing element is mechanically mounted on the holding rod so that dislocations, in particular dislocations in the opposite direction of the provision direction, can be prevented.

In an embodiment of such a stationary element it is no longer necessarily required that the holding rod has a structured area in the region of the final position of the stationary element. Such a type of embodiment of the fixing element also ensures a secure fixing between the component parts in connection with further manufacturing steps of the electric lamp, in particular a secure position fixing for the melting process.

In the two aspects relating to the stationary element, further tantalum strips are no longer required for the further component parts, in particular for the stationary connection of the stationary element to the holding rod and the support. Further, according to this embodiment, the possibility that the members of the fixed element may be broken and fall into the discharge chamber may be prevented in the discharge lamp having the fixed element as described above.

Preferably, in the case of the fixing element according to the second aspect, at least one flexible region may be formed on the inner surface of the ring mold, in which the inner diameter of the fixing element is equal to that of the holding rod in the region of the final position of the fixing element. Smaller than the outside diameter The fastening element provided by this embodiment can be relatively economical, and the bending of the flexible regions ensures a reliable positioning. In particular, in the case of installing the fixing element on the holding rod, one or more flexible regions are bent in the opposite direction to the installation direction, thereby preventing the possibility of disengaging the fixing element in the opposite direction to the installation direction.

Further preferred embodiments of the fixing element according to the first aspect may also be seen as preferred embodiments of the fixing element according to the second aspect.

In two aspects of the stationary device according to the invention, the stationary device may also be formed as a pot. Preferably in this case, not only one extension in one plane, but also a three-dimensional structure with side walls can be provided, the side walls being formed at least locally surrounding the periphery. With this type of embodiment, the damping action and in particular the weakening of the lever force can be made possible, thereby increasing the failure stability. In particular, if the fixing element shaped in the above type is inserted into the recess of the support, the supporting surfaces of the fixing element can be embodied on the inner side of the recess, so that the impact force can be absorbed. Improved force distribution is ensured by such an embodiment.

A further aspect of the invention relates to the arrangement of a discharge lamp, in particular a high-pressure discharge lamp, said discharge lamp having a holding rod, a support and a fixing element for an electrode according to the first aspect of the invention or a second of the invention. It has a fixed element according to the aspect.

Preferably the holding rod may comprise a structured area, the structured area having at least one structure edge. In particular, the structured area is formed to have at least one notch, the notch is formed in an exterior surface of the holding rod and the structure edge of the notch has an outer diameter below the outer diameter of the holding rod outside of the structured area. . Thus, for this embodiment, notches can also be formed, preferably within the structured area, the dimensions of which are not outside the external dimensions of the outer surface of the holding rod which is outside the structured area. Thus, the notch is a groove or a material cavity formed from the holding rod.

In such an embodiment the inner diameter of the fixing element is smaller than the outer diameter of the structure edge of the notch and smaller than the outer diameter of the holding rod that is outside of the structured area, so that the flexible area of the fixing element can engage the notch. It is possible to ensure relative positioning between the components.

Preferably the structured region comprises at least one conical shaped segment. The conical shaped segment is formed to taper in the direction of the electrode disposed on the holding rod. Thus, locking of the flexible area on the inner side of the fixing element can be effected in the tapered section of the conical shaped segment. It is precisely in this embodiment and the possibility of dislocation of the fixed element in the direction of the electrode by the conical narrowing part that can be prevented.

The structured region may have at least one ridge, the ridge formed on an exterior surface of the holding rod and including a structure edge having a larger outer diameter than the holding rod external to the structured region. By this embodiment formation can be achieved which is contrary to an example with a notch, for example. Thus, not a material cavity is formed from the holding rod in the region of the exterior surface, but a ridge is formed by forming a material supplement on the exterior surface. In this embodiment the inner diameter of the fixing element is equal to or even larger than the outer diameter of the holding rod outside of the structured area. However, it is important to note that the inner diameter of the fixing element is smaller than the outer diameter of the structure edge of the ridge of the structured area. As a result, position fixing can be realized when the fixing element passes the structure edges, and in particular, dislocation in the installation direction can be prevented.

Even in the case of the above embodiment with one or more ridges, the ridges may be formed of conical partial segments, and may be formed to completely surround or only partially surround the exterior surface of the holding rod.

In addition, embodiments that enclose only notches of this type only partially, as well as embodiments that enclose completely, may be formed.

In a preferred embodiment the fixing element can be arranged in the support. By this embodiment the support is at least locally formed hollow and envisioned for the reception of the stationary element. Furthermore, in addition to the compact embodiment which saves space, safety device positioning and centering can also be improved again.

 Preferably, the support portion has a recess at the distal end, and a fixing element can be inserted into the recess so that the supporting portion can be installed in a final position of the fixing element. According to this embodiment, the installation of the fixed element can be economically performed up to the final assembly position of the fixed element, and the final assembly position can also be formed mechanically stably. In addition, the centering function between the component parts can be particularly well satisfied by the fixing element by installing the fixing element as above.

Preferably, the recess is formed to taper into the support when viewed in the longitudinal axial direction, and a bore is provided on the inner stopper, the bore having an inner diameter which ensures correct installation of the fixing element.

The invention also encompasses a discharge lamp, in particular a high-pressure discharge lamp, comprising an arrangement according to the invention having a holding rod for electrodes, a support and a fixing element. The discharge lamp may also have one preferred embodiment of the arrangement.

Embodiments of the present invention are described in detail below with reference to the schematic drawings:

1 is a side view of a high pressure discharge lamp according to the present invention;

2 is a perspective view of the arrangement according to the invention of the high-pressure discharge lamp according to FIG. 1;

3 is a side view of a holding rod for an electrode;

4 is a partially enlarged cross-sectional view of the holding rod according to FIG. 3;

5 is a first embodiment of a structured region formed in the holding rod according to FIG. 3 or 4;

6 a further embodiment of the structured area of the holding rod according to FIG. 3 or 4;

7 is a plan view of an embodiment of a fixing element according to the invention;

8A to 8F are plan views of various embodiments of the fixing element according to the present invention;

9 is a perspective view of a further embodiment of a fixing element according to the invention; And

10 is a perspective view of a further embodiment of the arrangement according to the invention for the high pressure discharge lamp according to FIG. 1.

In the figures the same elements or elements that act the same are denoted by the same reference numerals.

1 shows a schematic side view of a high-pressure discharge lamp I, which has a cathode 1 and an anode 2. The cathode 1 is fixed to the holding rod 3. The anode 2 is fixed to the holding rod 4. The holding rods 3 and 4 communicate with the interior of the support 5 or 6, which are each formed of small quartz rolls. The above-mentioned component parts of the high-pressure discharge lamp I are arranged in the discharge tube 7 formed of quartz glass. The discharge tube 7 comprises an ellipsoidally shaped discharge bulb 71 in which the electrodes arranged on the holding rods, i.e. the holding rods 3 and 4 having an anode 2 and a cathode 1 Extend into the discharge bulb. A discharge chamber is formed inside the ellipsoidal discharge bulb 71. Bulb connections 72 and 73 of the discharge tube 7 extend to face each other.

One connection terminal base 8 and 9 is disposed at the bulb connecting portions 72 and 73, respectively.

As shown in FIG. 1, a fixing element 10, also referred to as a safety disk or plate, is arranged inside the support 5. The arrangement 11 comprising the support 5, the holding rod 3 and the stationary element 10 is melted in the bulb connection 73.

In a similar manner the stationary element 12 is arranged inside the support 6, and the arrangement 13 comprising the holding rod 4, the support 6 and the stationary element 12 is melted in the bulb connection 72. do.

In this case, the melt is formed in an airtight manner.

2 shows a perspective view of one embodiment of the arrangement 11 according to the invention. The arrangement 11 includes a cylindrical support 5 having a continuous bore 54, in which a holding rod 3 is fitted. A recess 53 is formed in the distal end 51 of the support 5 facing the cathode 1, which is a conical region 53a and the cone in the direction of the longitudinal axis A. It has a cylindrical region 53b connected to the shaped region. Thus, the recess 53 is first formed to taper in the direction of the second distal end 52, and then merges into the region 53b, which region has the same diameter over a predetermined height.

At the part connected to the distal end 52 facing away from the cathode 1 is arranged a plate which is not mentioned in detail which functions as a closing part of the arrangement 11.

The holding rod 3 has a structured region 31 formed on the exterior surface 3a. As shown in FIG. 2, the relative positioning between the support 5 and the holding rod 3 is such that the structured area 31 is positioned within the support 5. In particular, this embodiment is envisioned such that the stationary element 10 is positioned within the end position on the lower stopper of the region 53b to be coupled within the structured region 31. In particular, in this case, locking is made between the holding rod 3 and the fixed element 10. By this embodiment of the arrangement 11 on the one hand the fixing of the relative position between the holding rod 3, the support 5 and the fixing element 10 can be ensured. In addition, the centering of the component parts can be assured by this clear positioning of the fixing element 10 suitable for the region 53b. In particular, the damping action at the time of the acceleration force can thereby be improved, and the absorption of the lever force acting on the holding rod 3 can be improved. Damage, in particular breakage, in particular of the fixed element 10 and / or of the holding rod 3 in the case of such an acceleration force can be significantly reduced or completely prevented by such an embodiment.

3 shows a schematic side view of the holding rod 3. The holding rod 3 has an overall length l1 which is about 62 mm in the embodiment. The structured region 31, in particular the upper edge of the structured region 31, has a gap l2 from the front end of the holding rod 3. In an embodiment said spacing l2 is about 36.5 mm.

In addition, the holding rod 3 has an outer diameter d1 outside of the structured region 31, and in this embodiment the outer diameter is about 8 mm.

4 shows a partially enlarged sectional view of the holding rod 3 according to FIG. 3. In this case, in the depicted embodiment, the structured area 31 comprising a plurality of grooves is shown enlarged and the tooth profile is shown in cross section. The number of grooves is only an example and is used only to explain the structured region 31. In order to be able to form the structured region 31 and to ensure the function of fixing the relative positioning between the holding rod 3, the support 5 and the fixing element 10, basically Only one groove of the same type is sufficient. In the embodiment shown according to FIG. 4, the structured region 31 has a length l 3 of about 5 mm. These dimensions are also examples only and can be made much smaller.

The structured region 31 is preferably formed to completely surround the periphery of the exterior surface 3a. However, structured region 31 may be formed only locally in the direction of rotation.

In the illustrated embodiment the groove has a height or length l 4, which is for example 0.25 mm. Preferably the number of grooves is minimal, and the length l4 of this type of groove is at least 0.25 mm.

5 shows a partially enlarged sectional view 31a of the drawing according to FIG. 4. The schematic diagram of FIG. 5 shows a first embodiment of structured region 31. It can be seen that notches 311, 312 and 313 are formed by forming material cavities in the holding rod 31. Notches 311-313 have a maximum depth t1. This results in a pointed protrusion that forms structured edges 311a and 312a on the outside. The structured edges 311a and 312a are formed to surround the periphery and do not extend beyond the exterior surface 3a. Thus, in the embodiment according to FIG. 5, the structured region 31 is formed to be less than or equal to the diameter d1 of the holding rod 3 outside of the structured region 31.

In addition, as can be seen in the example of FIG. 5, the notches 311-313 are formed with a plurality of conical shaped segment segments 314, 315, and 316 in which the structured regions 31 are disposed in series.

In the above-described embodiment of the holding rod 3 according to FIG. 5, in the ring-shaped embodiment, the fixing element 10 has an inner diameter d3 (FIG. 7), which is an outer diameter d1 of the holding rod 3. It is designed to be smaller. Therefore, when positioning the fixed element 10, the inner side 101 of the fixed element 10 or the flexible regions 102 to 107 formed on the inner side are locked to the structured region 31 (for example in FIG. 7). And engage the notch of one of the notches 311 or 312 or 313.

6 shows another embodiment of the holding rod 3 according to the enlarged partial sectional view 31a of FIG. 4. In this embodiment, ridges 311 ′, 312 ′ and 313 ′ are formed in the structured area 31 of the exterior surface 3a, and the ridges protrude beyond the dimensions of the exterior surface 3a and thus have an outer diameter. It has a diameter larger than (d1).

In this embodiment also the ridges 311 ', 312' and 313 'are configured such that a tooth profile is formed to form structured edges 311a', 312a 'and 313a'. The depth t1 between two neighboring ridges 311 ′ through 313 ′ is designed to extend from the structure edge 311 ′ a to the virtually set sheath surface 3a. Depth t1 may be larger or smaller.

The ridges 311'-313 'are preferably formed to surround the holding rod 3 in a completely hermetic manner.

According to the exemplary embodiment shown in FIG. 6, the structured region 31 has a plurality of conical shaped segment segments 314 ′, 315 ′ and 316 ′, which segment segments are continuous in the longitudinal direction A. It is formed in the form of a cascade. In the case of the above embodiment, the fixing element 10 may have an inner diameter d3 larger than the outer diameter d1 of the holding rod 3. Even in this case, when the fixing element 10 is installed on the holding rod 3, the inner side 101 and the particularly flexible regions 102 to 107 can be locked in the spaces between the ridges 311 ′ to 313 ′. have.

The conical partial segments 314 to 316 or 314 'to 316' shown in FIGS. 5 and 6 are merely examples, and the number and shape may vary.

7 shows one embodiment of a fixed element 10 according to the invention. In this embodiment the fixing element 10 is formed in the form of a disk and extends substantially only in one plane, more precisely in the figure plane. The stationary element 10 is also a sealed ring mold. Important for the stationary element 10 according to the invention is that the inner side 101 is formed and designed to be coupled to the structured region 31. To this end, the inner diameter d3 may be formed at a ratio corresponding to the outer diameter d1 of the holding rod 3.

In the embodiment of the fixed element 10 shown in FIG. 7, the fixed element has an outer diameter d2. In addition, a plurality of flexible regions 102 to 107 are formed, the flexible regions being disposed at the same distance from each other in the rotational direction and positioned to be separated from each other inside the material of the fixed element 10 by recesses. . The trapezoidally shaped flexible regions 102 to 107 are thus envisioned as latching lugs, which are engaged in notches 311 to 313 or between ridges 311 ′ to 313 ′. Can be locked into engagement with

Furthermore, this flexible embodiment of the regions 102-107 allows for simple and economical installation and sliding over the holding rod 3, for which the flexible regions 102 in the design according to FIG. To 107) bend opposite to the direction of movement. When the notches 311-313 are reached, the flexible regions 102-107 that are bent backwards are snapped forward again and locked in the notches 311-313.

As shown in FIG. 7, the flexible regions 102-107 have a depth t2 starting from the edge of the fixing element 10, in which case the recesses have a depth t3. In addition, one flexible region 102-107 has an angular segment over a width w1, and the recess with the angular segment is sized to span the width w2.

An angle segment having a width w1 may have an angle of for example 40 degrees, in which case the angle segment having a width w2 forms an angle of 20 degrees. In addition, the depth t2 is about 3.9 mm and the depth t3 is about 1.5 mm. The inner diameter d3 is about 7.2 mm in the unique embodiment shown, in which case the outer diameter d2 of the fixing element 10 can be, for example, 15 mm in the illustrated embodiment. The numerical values mentioned above are also examples only.

The stationary element 10 is preferably formed of a high heat resistant flexible material. The stationary element 10 may comprise at least partly tungsten and / or at least partly molybdenum. The stationary element may have a thickness (dimensions in the direction of the longitudinal axis A) of about 0.2 mm.

8a to 8f show embodiments of the stationary element 10 in a further schematic view, in which case not only closed ring molds but also open ring forms are shown. Important for all shapes and embodiments of the stationary element 10, if the holding rod has a structured region of this type, a fixed coupling is made to the structured region 31 of the holding rod, or otherwise In other words, when the holding rod does not include the structured region 31 as described above, the inner diameter d3 of the fixed element 10 is selected to be smaller than the outer diameter d1 of the holding rod 3. . Thus, regardless of the specific embodiments, relatively generally a relatively fixed position maintenance between components such as holding rods, supports and fixing elements can always be ensured. Advantageously, the above embodiments may additionally also achieve centering between the components and even damping during acceleration.

As shown in FIG. 2, in addition to certain embodiments, the arrangement 11 may be provided such that the fixing element 10 is not integrally integrated into the support 5 near the front end 51. Preferably in the above embodiment the fixing element 10 may have a collar or web at least locally surrounding the collar, the web or web extending in the direction of the longitudinal axis A. And at least locally adjacent to the inner side 531 of the recess 51. Thus, one web of this type extends perpendicular to the plane, in which the fixing element 10 according to the example of FIG. 2 extends. Position fixing and centering can also be ensured by the fixing element 10 formed as described above and adjacent to the inner side surface 531.

Such additional, at least locally surrounding webs may also be provided in the embodiment according to FIG. 2. As a result, torsional or expansion errors that occur when sliding the fixing element 10 over the holding rod and in particular when inserted into the final position shown can be reduced.

In Fig. 9 another embodiment of the fixing element 10 is shown in a schematic perspective view. In this case, the fixing element 10 is not formed only with a plate extending in one plane, but rather is realized as a three-dimensional structure formed in a port shape. To this end, the fully enclosing sidewall 108 may be formed in an obliquely inclined state in the illustrated embodiment. As a result, the fixed element 10 is formed into a high truncated cone.

FIG. 10 is a perspective view showing a further embodiment of the arrangement 11 according to the invention, which arrangement comprises a fixing element 10 according to the embodiment of FIG. 9. In the illustrated end position of the fixing element 10 in the recess 53 of the support 5, the fixing element 10 is suitably mounted on the lower end of the recess 53 so that the lower end and the inner side surface 531. Adjacent directly to. Since the installation is made flat on the inner side surface 531 by the side wall 108, damping may be improved when a collision force is generated.

In the embodiment shown the support 5 is formed in a truncated cone. As the support 5 narrows toward the distal end 52, the distal end 51 has a larger diameter than the distal end 52.

Claims (20)

Securing element for fixing the relative position between the holding rods 3, 4 for the electrodes 1, 2 of the electric lamp I and the supports 5, 6 surrounding the holding rods 3, 4. )as, The stationary element has one ring mold, in which case the inner surface 101 of the ring mold is formed to be at least locally coupled to the structured region 31 of the holding rod 3, Fixed element. The method of claim 1, wherein the ring mold is closed in the direction of rotation, Fixed element. The method of claim 1, wherein the ring mold is opened in the direction of rotation, Fixed element. 4. The inner surface 101 according to any one of claims 1 to 3, wherein at least one of the structure edges 311a, 312a, 313a; 311a ', 312a', 313a 'of the structured region 31 is in place. Having an inner diameter (d3) smaller than the outer diameter of Fixed element. 5. The at least one flexible locking element (102-107) of claim 1, wherein at least one flexible locking element (102-107) is provided at the inner side (101) of the ring mold. Disposed to be coupled to the structured region 31, Fixed element. The method of claim 5, wherein a plurality of flexible locking elements (102 to 107) are formed on the inner surface 101, Fixed element. The method of claim 5 or 6, wherein the plurality of locking elements 102 to 107 are arranged at the same distance from each other in the rotation direction, Fixed element. 8. The fixing element according to any one of claims 1 to 7, wherein the fixing element is formed of a high heat resistant flexible material. Fixed element. The method of claim 8, wherein the fixing element is at least partially formed of molybdenum or at least partially formed of tungsten, Fixed element. 10. The fastening element according to any one of the preceding claims, wherein the fixing element has a side wall 108 which at least locally surrounds it. Fixed element. As a fixing element for fixing the relative position between the holding rods 3 and 4 for the electrodes 1 and 2 of the electric lamp I and the supporting portion 5 surrounding the holding rods 3 and 4, The fixing element has one ring mold, in which case the inner surface 101 of the ring mold is at least locally the outer diameter of the holding rods 3, 4 in the region of the final position of the fixing element 10. having an inner diameter d3 smaller than (d1), Fixed element. The method of claim 11, wherein at least one flexible locking element (102 to 107) is formed on the inner surface 101, the inner diameter (d3) of the fixed element 10 in the flexible locking element (102 to 107) ) Is smaller than the outer diameter d1 of the holding rods 3, 4 in the final position region of the fixed element 10, Fixed element. Having a holding rod (3, 4) for the electrode (1, 2), a support (5) and a fixing element (10) according to any one of claims 1 to 12, Arrangement. 14. The holding rods (3, 4) according to claim 13, wherein the holding rods (3, 4) comprise a structured area (31), said structured area comprising at least one structure edge (311a, 312a, 313a; 311a ', 312a', 313a '). Branches, Arrangement. 15. The structured area (31) according to claim 14, wherein the structured area (31) comprises at least one notch (311, 312, 313) in the exterior surface (3a) of the holding rods (3, 4). The structure edges 311a, 312a, 313a of) have an outside diameter less than or equal to the outer diameter d1 of the holding rods 3, 4 outside of the structured region 31, Arrangement. The method of claim 14 or 15, wherein the structured region (31) has at least one conical shaped segment (314, 315, 316; 314 ', 315' 316 '), said conical shape said holding rod. It is formed to taper in the direction of the electrode (1, 2) disposed on (3, 4), Arrangement. 15. The structured area (31) according to claim 14, wherein the structured area (31) has at least one ridge (311 ', 312', 313 '), the ridge being on the exterior surface (3a) of the holding rod (3, 4). Formed to include one structure edge 311a ', 312a', 313a ', the structure edge being greater than the outer diameter d1 of the holding rods 3, 4 outside the structured area 31. Having a large outside diameter, Arrangement. The method according to any one of claims 14 to 17, wherein the fixing element 10 is disposed in the support (5), Arrangement. 19. The support part (5) according to claim 18, wherein the support part (5) has a recess (53) at its distal end (51), and the fixing element (10) is insertable in the recess and can be fitted to its final position. , Arrangement. 20. The method of claim 19, wherein the recess 53 is formed to be tapered inwards when viewed in the longitudinal axis (A) direction and the inner stopper has a diameter for properly inserting the fixing element 10, Arrangement.

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