DE1639092C3 - Self-igniting discharge lamp - Google Patents

Description

Electrodes in the Weselihn parallel to each other and from opposite directions in the two Insert electrodes.

20. Self-igniting discharge lamp according to An and is k claim 15, characterized in that the two are categorized. the electrodes (16, 18) and the cells in them

formed receiving slots (60, 62) in the wesemli- ii rather, are identical to one another and therefore one Form a non-polarized discharge lamp.

orunei. .

Although this discharge lamp has a »straight line, Bridge wire in very satisfied corner Works wisely and is well suited as a self-igniting discharge lamp, it has been shown that its heat resistance and burning stability under the flow from very strong impacts and vibrations as well as high accelerations or decelerations in some respects does not quite meet the requirements. Extremely strong shock discharge 30 vibrations or vibrations, of which the launching of rockets, picotiles and the like in general. is accompanied, claim the marker wire. generally only one of about 0.15 mm, very strong, so that under

This invention relates to self-igniting lamps, in particular short-arc discharge lamps, which, within a pressurized envelope, are spaced apart from one another by a pair of fixedly arranged electrodes which wipe one another. Arcing 35 circumstances form a crack, and through a bridgewire miieein- ^; ' ^vv ' ™ "''■> ■■ Rrürl-pn other are connected, which contains a self-supporting, the arc gap bridging, burnable section, which melts when the operating voltage is applied to c''e discharge lamp and the ignition of the Arc causes.

In the USA patents 3 25η 459 and 274 427 of the same applicant describe self-igniting short-arc discharge lamps, which have a bridge wire / between the electrodes for igniting an arc discharge, when creating the legal rights of a The voltage used for the arc melts (or explodes), thereby initiating the arc discharge. As stated in these patents. 5 < self-igniting arc lamps have been used for some time for applications where only a single use of the discharge lamp is provided, for example in the fields rocket technology and projectiles.

In the case of non-self-igniting arc discharge lamps, it is first necessary to use a linear pulse very high voltage to be used. the tspischerwcise at 15,000 Vt) It and generally through an ignition or TnggennipulsspaniHmr> qii fcrt will. This will make the / wipe the 1 lectri the gas located partially ionized and a Ui gcnentl.idling triggered. As soon as the l.ichtbouenentl; Jung has started, the further discharge process by means of a smaller clamping groove! Is usual wise of about! 2'OIt. maintained that in well-known Way of an operation ', spatinun!'. S (| iiellc for the discharge uni'.slam! : is delivered. D.i ΐη / Κη this one can

is. If the dh ^^ .. ^ .. ^. _.

Vibrations are made to explode. it happens that you see the wire from the the hottest point of the electrode, and therefore the end portion of the bridge wire protrude laterally from the slot after the middle section has burned off, which normally used to hold the wire, and form an electrode on which the arc discharge can skip, giving the discharge a little discontinuity.

It is therefore the object of the invention to provide a self-igniting discharge lamp with a bridge wire indicate which has an improved shock resistance.

The I inladungslanipe should also be under Enable a constant arc discharge under extremely difficult conditions and influences.

Furthermore, the discharge lamp should have an increased resistance of ¹ , an increased flame stability! exhibit.

The l-mi sections of the cantilevered section iles liriickendrahtcs are said to be arranged in such a way be that they are close to the elec. <> point elastic springy in one Elekiroden become beaufsdihuit. . ah-ehnitie by every 1 ageve'schicoiing closer to hottest part of the electrodes, namely the outer 1 lektmdenspit / e. to be brought. The up

Ik: they Ik: they Llektiiidenspitze, are brought. If there were, it is concluded that the cantilevered section The arch wire has a curved or loop-shaped shape over its entire extent and so /. wipe the electrodes together-

5 6

is depressed so that its end portion c in places that know, as shown in ilen drawings. one-

are in the vicinity of the electrode tips, be elastically different, so that each of the two

are resiliently pressed against the electrodes. Can serve as an alternative and the lamp is not polarized

that is where the exit points of the bridge are. Of course, one of the two can also

wire-receiving slots in the tapered ends of the 5 electrodes with a larger diameter than that

Electrodes in such a position that the other bridges are formed in order to

wire to the hotter anode when it is inserted and when it is used for its exposure lamp

would be formed through the tips of the electrodes. However, the fact that the discharge

must be performed. The curved or bent lamp according to the invention need not be polarized.

The shape of the bcfindlio within the discharge path represents a decided advantage by the

chen bridge wire not only causes a clasti manufacturing costs are significantly reduced and the

see support of the bridge wire, but offers lamp to a voltage regardless of polarity

also the guarantee that the ends of the free voltage source can be connected.

bearing section exactly at certain points The electrodes 16 and 18 are immovable in on the conical surface of the electrodes and in 15 within the lamp bulb 12, in that the immediate vicinity of the tip of the electrode bc-scr bulb is located directly on the main parts 20 and 22, so that the end sections remaining on the electrode feet 24 and wire after the burn-off of the bridge of the electrodes and of the receptacle 26 is shrunk on. The foot 24 of the electrode 16 is only slit through the hot elec- trode rod tips and can be left through point welding by means of a molybdenum, thereby being melted. 20 dänblättchens 30 (of usually 0.00015 mm) close the slot and thus a smooth electrode is connected to a conductor strip 28, which bring about a known rod shape. tcr way is attached to the electrode foot 24. The exemplary embodiment of a discharge lamp according to conductor strip 28 usually consists of molybdenum. The invention can be seen on the basis of the description in FIG. 3 and has a width of about 3 mm and a strength connection with the drawings; it is 25 from c »wa 0.017 mm. The other end of the Lciter-Fig. 1 an elevation view of a self-clamp 32, partially in cross-section and below the tape 28, is connected in the same way to a connection point of some parts, to which a flexible, short-arc invitation lamp is attached after the device 34. The part of FIG. 1 consisting of the conductor strip 28 of the invention, terminal 32 and possibly also from FIG. F i g. 3 is an enlarged elevation, partially surrounded in the transverse piston 12 by being shrunk by means of cutting the arch wire and the adjacent ones of a known method.
Electrode sections of the lamp of FIG. 1, In the same way, the electrode foot 26 is enlarged in FIGS. 4A, 4B and 4C, 35 a conductor strip 36 and a connecting terminal 38 with similar to FIG. 3, the three different shapes of a flexible lead 40 connected, and on arch wire, including the optimal shape, this entire lead is shown the lamp bulb, shrinks. To put the lamp into operation, FIG. 5 is a representation, similar to FIG. 3, which shows the voltage source, not shown, for the light bocine . ignites the arc and then holds a bonur having a single curvature, gene discharge in the lamp 10 upright. This Auf-F i g. 6 is a perspective view of one construction of a lamp is commonly known as a "bandabge electrode and a portion of the archwire sealed" lamp because the seal between the embodiment of FIGS. 5 and 45 see the interior 14 and the outside around FIG . 7 shows a representation similar to FIG. 6, the ribbons done around. However, it should be pointed out that the present invention shows a receiving slot in the cathode with a further closed design. the same applies to "rod-sealed" lamps. In the various figures, the same can be used, in which the strips are denoted by rods with the same reference numerals or are set at 5 °, around which the seal is made, corresponding parts. In FIGS. 1 to 3, an electrode 16 and 18 are each shown with a discharge lamp 10 with a bridge wire, which give away lamp end sections, which are formed from the according to the invention. The discharge cylindrical sections 42 and 44 of the smaller lamp 10 has a lamp bulb 12 which, for understandable reasons, consists of quartz cuts 46 and 48 in diameter and conical shapes, which are made of glass against each other. The inner space 14 of the lamp vessel ends overlying tips, between which the 12 is generally under gas pressure and is formed with a discharge path. This discharge is filled with a noble gas, for example with xenon or a line, ie the distance between the tips of the related gas, the pressure of which for both room electrodes generally has a longitudinal temperature between 10 and 15 atmospheres 0.635 to 0.89 mm and is here with the Be and denoted by the drawing symbol "G" at normal operating temperature. The discharge path <usually increases to 15 to 30 at. A bridge wire 50 is bridged by a curved or loop-shaped pressurized lamp bulb 12, which is arranged in the pair of electrodes 16 and 18, which cone sections 46 and 48, respectively, embed the anode and the cathode of the short-arc arc in slots. Discharge 65 is and along the cylindrical sections 42 to form manure lamp. These electrodes consist of 44 runs. The ends of the arch wire 50 sim a refractory metal, e.g. B. made of die-forged tungsten by a spot weld or in another way. The electrodes 16 and 18 by means of platinum leaves 52 and 54 in be

known way firmly connected to the electrodes 16 and 18 between the arch wire and the side walls of the. The arch wire 50 usually has a receiving slot, has a good heat transfer between a diameter of 0.150 mm and consists of the arch wire and the electrode given, molybdenum or another metal. and the electrode acts as the electrodes 16 and 18 in Fig. 16 when the lamp is ignited. 3 each have 5 a heat sink. As a result, heat is quickly dissipated from the one receiving slot 60 or 62 for the bridge ends of the bridge wire, which is immediately next to wire, the width of which is dimensioned so that the electrodes lie. Since, for the arch wire 50, a sliding middle section of the arch wire has no heat absorption within the slot. The receiving slots 60 and 62 run line is possible, this heats up very quickly, from the periphery to the interior of the electrodes, which ensures that the bridge wire • · · "" · ■■ - - ^j - "ii, . _m j, 1Ä diametrically eeecn- first burns off in the middle and the further

in a short time towards

Under the expression, diametrically opposite «so there- % ^^ X _{which emerges from the} melting

that ^{d 'e} * ^"e" ~ ™ £ ™ _{15 of the} middle section and the burning of the wire are at understood

180 ° offset from one another and ^{put together 'J ^ ent} gj_ happens very quickly, so that

set directions from into the electrodes ^^ ^ _{designation the "expi odieren} " of _the bridge

to run. . kendrahtes is applicable. The part of the electrodes

Since the two receiving slots 60 and 6Zzilein ^ ^ are _first heated, the point is, and there the

others are identical, the whole process takes place very quickly ^{according to} ™ n ° e _{60 ao, the}

Rewriting of the slot 62 on the ski ζ ου * _{ü kbre} ^B _{nenden ends of the} bridge wire be-

to. The receiving slot 62 has a b ^ ntiwne ^^ ^ exit point and the hot tip is

64 the rectilinear or also as in ° ^e [™ J £ ^r ° '»f W i the burning back ends of the

Writing of the slot _{ü kbrenenden ends of the arch wire} between

to. The receiving slot 62 has a b ^ ntiwne ^^ ^ exit point and the hot tip is

64 that catch in a straight line or also, as in ° ^e [™ J £ ^r ° '». When the burning back ends of the

represents, can be slightly concave. The ™ ^υ Ρ * ^ ^ηα ™ £ bridgewire near the center line of the elec-

also the reason for the curvature of the ^üoae ™ " _electrodes are located, they melt and seal the 64 is in the manufacturing process for the, acn u ^ _{der A} ^ _that ^ _{{estes and g} , _aUes

to see if this is created, for example, by an _{end of the electrode} .

Grinding wheel is produced, where sicnme ^^ ^ ^ _{distance ϊ / 4β is very small (at} .

dlh 64 d Piherie der ^ niensciu ,, ^ l i Dh d Bük

Grinding wheel is produced, where sicn ^^ ^ ^ _{distance ϊ / 4β is very small (at} .

the surface 64 of the periphery of the ^ niensciu ,, ^ _spi elsweis; e less than a diameter of the bridge

fits. The point at which the B ° ^de ™ ^e ° _{it 30} kendrahtes, so that the exit points of the bridge surface of the Kcgelabschnittes 48 sclinofle. isi m ^^ _{küsch in the axis of the} electrodes, 66 and is said to be the ^A " ^slri " ^s P "'j _{which it can be viewed} after the central section of the slit has been burned off. In & ^eic ^" ™ o _C7U " _sze i - it can happen that the burning back ends of the exit point for the slot 60 with the m. y bridge wire out of the receiving slots.

Chen 67 specified. The A " ⁵¹ "" ⁵ ^." ^ ·,. ' _K '^ ₁ . _{35 be} pressed before the tip has warmed itself so far along the inclined Obertiacne α «» β _{> around these ends by} melting to the distance "Λ" from oer ογ ^^ _{and that the end of the bridge} wire is not cone removed. The location of the ^Sc h ^{ni "e?} *, Is burned _chen * ^P *, but a further electrode-forming surface 64 with the surface of ^""°" * ⁿ _de f _{on we} i the arc _che skip and portion 44 is not critical and can "" ¹ ^ _{4o dne} discontinuity in the discharge can cause any point on the surface aer -c. ^ ^^ _{& ρ] 1 tnn} - _{m in} the presence _allgerneinen be provided that the aw of diesemι ^ ^ _0n vibrations in rectilinear projecting portion of the bridging ^ram f? . _{Bridge wires} that are not taut within the within a relatively ^short , " ^E Rlauche n discharge path and are offset laterally from that by point welding at aem r> i ^ ^^ _{by the vibrations, d bfidt Abd 4 ib}

from that through punk ^ ^^ _{through the vibrations} laterally

54 attached end. _{In the} previously mentioned distance "/ 4" in relation to

The distance »/ 4« is chosen so that »» » _{on the onge of the} receiving slot in the direction of the

the discharge path above »™ ^c r |" _{Since M} inclined conical surface refers in nichtpolariin the immediate vicinity of the tip to the ^ ^ terraced lamps on both electrodes In polarisierwünschenswert, for bridge ⁰ ^.. _{"m so th} lamps this distance refers "/ 1" in ergute holder and a good warmeuo _{B β-art χΜ & au {the Kathodej as} the anode in allgeschaffen, for the distance \ * a * ^we ^ ^s _r J _hmesS is he my to about 700 ° C hotter. If the bridge requires such a route that the. _{β / 1β} kendraht burns back in the direction of the anode, corresponds to the bridge wire 50. ^ * £ "? 'Burch- is therefore sprayed over the end of the bridge wire on the other hand, the fourfold www ^^. ^ _Conical surface and closes the knife of the bridge ^wire 50 enls P ^'. _{From the} receiving slot without further ado. For this reason still a steady ^light °° ^{ge% er} "~ ί" within is the location and the distance of the receiving slot these reasons, the Abstana ^Λ _{Mini. m the} anode chosen with respect to the conical surface of an area which between ^^ is _{not critical and can be} within a much larger mum of about a diameter u "". _R are changed _6o area when he ^^ _{the distance Ί) Α called wor} is in communication with mum of about des_ u four times in the. The arch wire lies, with the upumum ^ section of the arch wire 50, which is of two diameters. suspects advertising the exit points 66 and 67 of Aufnahmein this connection it must AuCN erwaii_ slots 60 and 62 in the discharge path in the that the arch wire in _# a net ^ _{vorstehtj SOU} referred to _{as the fRsi} bearing portion of the ten-acres from the receiving slot ucu bridge wire and has quite a stepping point and the point is located uno ' ^na _{ef al} ig _e my the shape of the letter "S" in the burning down can only leave the slot, _{porm cjner double} curvature or loop, as moves through the point. As a result of uieu 409631/51

9 10

is immediately apparent from the drawings. That of the arch wire is approximately three times the cantilevered section of the arch wire 50 is the length of the discharge path "G", and its length is longer than the distance between the outlet shape can point 66 and 67 with respect to the axis of the electrodes , which are denoted in the drawing as an oblique "S", desdem the reference symbol "ß" is denoted. At this angle of inclination approximately parallel to the cones in FIGS. 4A, 4B and 4C, three different electrode surfaces are running. The two emile versions of the double-curved, free-meeting "S" are each about 18 (V ¹ , and the one shown by the lower section, the loop starting with 70 and 71, respectively, of an electrode arises and 72 and is marked in each case between a distance to the other of the two electrodes, the electrodes 16 and 18. The loops m approaching, which is almost half the discharge path cnt of the cantilevered length 70, are longer than the opti-speaking.

male shape, the section 71 represents a training The "S" -shaped shape of the self-supporting figure

which is to be referred to as the optimal length, section 71 is composed of a pair of gcradlini-

and finally the section 72 shows a shape, towards end sections 75 and 76, which approximates which the loops are shorter than in the case of the optimal 15 are right to the conical surfaces

len training. Although each of the depicted ab-

Sections 70, 71 and 72 have a shape substantially parallel to the end portions. runs,

a rectilinear design of the cantilever and a pair of curved or curved

Length is superior to what is taut between the apex sections 78 and 79 together, which around IHO zen of the two electrodes is spanned, it has 20 are bent and the opposite ends of the

it has been shown that the formation in the manner of the central section 77 with the sections 75 and 76, respectively

cantilevered section 71 connect the best results.

brings. Although the exact shape of the self-supporting Ab-Each of the sections shown in FIGS. 4 A, 4 B and 4 C is not very much within the discharge gap th cantilevered sections has a loop conveying which is critical, certain characteristics can be identified for shape, especially a double loop between the determination of the optimal area, see the exit points of the electrodes, which are between- If the forms 70 and 72 as the lower and the see the closed bottom surfaces of the receiving upper limit and the shape 71 as the center of the opme slit and the tips of the electrodes can be used in the smallest range It is assumed that this is a 30 hen that the length of the cantilevered section non-polarized lamp. These loops are usually no less than about one-and-a-half-meter Shape is 66 times and no more than about five times that between the exit points and 67 are pressed together so that if the length of the discharge path is not yet length it should be "G". It On the very top of the bridge wire the ends of the cantilever can also be seen that the "S" shape is inside the section resiliently resilient against the exit half of the discharge path between one completely on points applied and a good heat-deflecting »S« and one completely on the side cause a line to the electrode. In this training lying »S« should be. In addition, each would The reason for this is that the two loops that form the "S" are not Lamp with a bridgewire according to the invention is improved by more than 270 ° and by not less than 90 ° Shock and vibration resistance possesses 40 curves should be. This Icti.c mark is and under all declining operating conditions simultaneously for the middle of the area that the has an increased burning stability. End sections and the middle section of the "S"

The length of the cantilevered section 70 are parallel to one another.

carries approximately five times the length of the discharge. 5 is a further embodiment of a self-soil stretch "G" and its shape can be found in the lighting of the short-arc discharge lamp after the view of the axis of the electrodes shown as a standing invention in which a pair of electro- "S" are designated. The two loops of the "S" denote 80 and 82, which are in a (not shown) are each about 270 °, and which are enclosed on an Elek lamp bulb, a discharge strode beginning loop comes on closer than the distance form that of a bridgewire 84 over half the discharge path to the other that is bridged. The arch wire 84 is with the electrodes Electrodes. This shape is made as the electrodes 80 and 82 by spot welds to the upper limit of an optimal length range at points 86 and 88 in the manner already described see who normally cannot be exceeded connected. The electrodes have slots should. 90 and 92, which in all respects correspond to the length of the cantilevered section 72 and the embodiment of FIG. 3 described is about one and a half times the size of the discharge, with the exception that it is not diamedungsweg »G«, and its shape can be seen in the rear opposite, but from the same side in Look at the axis of the electrodes as a bottom- insert the electrodes. In other words, wound "S" are designated, the whole on which they lie not only parallel, but are around 0 Side lies. The two underdeveloped loops 60 offset from one another.

are each about 90 °. This shape is called the The arch wire 84 is received by the receiving lower limit of an optimal length range slit 90 and 92, and seen freely, the section 94, which is normally not undercut, is shaped in such a way that it is one should. forms umpteen loop. As with the earlier versions, the position of the exit point 96 is on the Ka section are in Fig. 4 B and are between a polarized lamp and the position of the see the values and shape of sections 70 exit points 96 and 98 on cathode and anode, respectively and 72. The length of the cantilevered portion 71 of a non-polarized lamp according to FIGS

O Ii π

previous versions chosen. For the bends so that the arch wire is physically held in place

tion of the cantilevered section 94 can and cannot escape. In all cases it is

Curvature can be chosen, which desirably allows the exit point to be as close as possible.

rivets the cantilevered portion 94 between the borrowed to the tip so that the optimal

Press exit points 96 and 98 together, 5 depth of the slot half a diameter d-γ

around 'an increased resistance to the bridge wire corresponds and the wire practical

Maintain a straight shape of the arch wire. exits coaxially with the tip. In order to have a good

The optimal area determined by tests is to ensure the stability of the bridge wire,

however, between 90 ° and 270, and the optimal one is the cantilevered section in the figure shown in FIG. 5 aarge-

Shape in the middle of the area at about 180 °. i ° posed way curved. Since the bridging wire is in

FIG. 6 is a perspective view of one of these designs securely anchored in the cathode

of the two electrodes of FIG. 5, showing that the is may refer to the receiving slot in the anode

Receiving slot 90 along its entire length open to the receiving slot in the cathode.

fen is so that the curvature of the cantilever Ab- bige have an angular position, there is only one holding

cut 94 requires the slightly compressed bridge 15 contact with the exit point of the anode.

kendraht holds in the receiving slot and its is such.

End sections elastically resilient against the exit It should be readily apparent that presses except points. those consisting of one or two loops, FIG. 7 represents a further embodiment, the forms shown, many other types of grinding are conceivable, especially for polarized short-arc discharge, which can be used when the buttons are pressed together. In this figure, a cable end of the cantilevered section elastic method 100 is shown, which has a receiving slot 102 for contact with a correspondingly arranged bridge wire 104 . As the exit points of the receiving slots have already been identified in the leads, it is necessary to press an electrode in order to achieve this. In addition, the mutual steady arc discharge towards the cathode, the part of the cantilevered section that does not burn back very much is critical, and the value of 0 ° for a single section before it has the opportunity to be captured from the loop shape and 180 ° for a double loop is that Receiving slot to emerge and thus changeable within wide limits, possibly to form a further electrode. In the above-described self-igniting the above-described embodiments, short arc discharge lamp with a curved this capture is achieved in that the arch wire intretende end section of the bridge wire is within the discharge path, the end sections of which is near the tip, in particular against which is in elastic, resilient contact with the least? The exit point is acted upon, which is located towards an exit point of the receiving slots in the tip, so that the emerging bridge, which would have to pass through the tip on a wire behind the apex of the electrode. Is arranged in the located point, has a verbes of the embodiment shown in Fig. 7 is the resistance and an increased combustion receiving slot 102 closed by drop forging stability.

1 sheet of drawings

Γ "

Claims (19)

Patent claims: L Self-igniting discharge lamp, which has a pair of stationary electrodes within a pressurized bulb at a mutual distance from one another, which form an arc gap between them and are connected to one another by a bridging wire, which is a cantilevered section bridging the arc gap contains, which melts when the operating voltage is applied to the discharge lamp and causes the arc to be ignited, characterized in that the cantilevered section (70, 71, 72, 94) of the bridge wire (50, 104) over its entire extent a has a curved or loop-shaped shape and is so compressed between the electrodes (16, 18) that its end sections (75, 76) are pressed elastically against the electrodes at locations near the electrode tips. 2. Self-igniting discharge lamp according to claim 1, characterized in that the curved Shape of the bridge wire has a single curvature (94). 3. Self-igniting discharge lamp according to claim 1, characterized in that the curved Shape of the arch wire consists of two curved sections (78,79). 4. A compression ignition type discharge lamp according to claim 3, characterized gekennze ^1: HNET that the curved shape of the Brückcndrahtes having substantially the shape of the letter "S". 5. Self-igniting discharge lamp according to claim 4, characterized in that the length of the "S" -shaped self-supporting middle section of the bridge wire between one and a half times and five times the length of the arc gap (C). 6. Self-igniting discharge lamp according to claim 4, characterized in that the arc length each of the curved sections (78, 79) of the "S" -shaped, self-supporting Middle section (77) of the arch wire is within a range of 90 to 270 ". 7. Self-igniting discharge lamp according to claim 4, characterized in that clic "S" - the shape of the cantilevered Mittelabschnit- _5C tes is inclined with respect to the center line of the arc gap at an angle between 0 to 90 °. 8. Sclibstündcndc discharge lamp according to claim 4, characterized in that the arc length each of the curved sections which together form the "S" -shaped cantilever Form the middle section of the bridge resting place, encloses an angle of nominally 180 ° and the length of the cantilevered middle section nominally is three times the length of the arc gap. 9. Sclbstzünclendc discharge lamp according to claim 4, characterized in that the outermost Ends of the end section (75, 76) and the center of the middle section (77) of the "S" -shaped formed cantilever middle section of the arch wire essentially parallel extend to each other and are connected to one another by curved sections (78, 79) which are essentially semicircular. 10. Self-igniting discharge lamp according to claim 1, characterized in that at least the cathode of the two electrodes has a receiving slot (60, 62, 90, 102) for the bridge wire which extends essentially in the axial direction from the apex of the electrode along part of this electrode runs, the width of this receiving slot being dimensioned such that the arch wire is slidably received by the slot, and the bottom surface (64) of the slot intersects the electrode end and forms an exit point (66, 67) for the cantilevered central portion which is on the the side of the electrode diametrically opposite the slot opening is arranged a certain distance (»Λ«) away from the electrode tip. 11. Self-igniting discharge lamp according to claim 10, characterized in that the distance between the exit point of the bridge wire and the electrode tip along the Electrode surface is dimensioned so that the protruding from the electrode portion of the Bridge beam is located near the electrode tip. 12. Self-igniting discharge lamp according to claim 11, characterized in that the receiving slot is lockable to the extreme end of the cantilevered middle section that is in contact with the exit point to be held securely. 13. Self-igniting discharge lamp according to claim 10, characterized in that the distance between the exit point of the arch wire and the electrode tip is measured along the electrode surface so that it between once and four times the diameter of the adjacent end section of the cantilever Corresponds to the section of the bridging wire. 14. Self-igniting discharge lamp according to claim 10, characterized in that the distance between the exit point of the bridge wire and the electrode tip along the Electrode surface is dimensioned so that it is substantially twice the diameter of the neighboring End portion of the cantilevered portion of the arch wire corresponds. 15. Self-igniting discharge lamp according to one or more of the preceding claims, characterized in that at least at the cathode the distance / wipe the Ausittspimkt ties bridge beam and the electrode tip is dimensioned so that the end portion of the cantilevered portion is closer than about four times the diameter of the He .dabschnittcs on the center line of the F.lektrodcnspil / e liejit . Ift. Self-closing discharge lamp one or more of the preceding claims, characterized in that the curved Shape of the bridge wire consists of a single loop, the arch of which forms a single loop Describes angles not less than 90 and not more than 270 '. 17. Self / iindende discharge lamp according to claim 15, characterized in that the curved Shape essentially the shape of a "5" corresponds to and the curvature of each of the loops of the "5" forms an angle of no less _R | s 00 "and no more than 270 ^J. 18. Self-igniting discharge lamp according to app must be present and both must be connected in terms of circuitry, results 18. Self-cleaning discharge lamp after a complex, expensive, space-consuming Claim 15, characterized in that the free 5 arrangement of great weight, The i * i said trough section of the arch wire in the we- patent specifications shown arc lamps with emem Patent specifications shown arc lamps with emem bridge wire avoid these disadvantages for a one-time Use in that the lamp is ignited simply by being connected to the operating voltage source connected. The voltage used to maintain an arc discharge first burns the bridge wire, igniting the arc discharge and maintaining it sentlichen _m aer rurm a nucnsiaoens "b" terhin upright. The beausgebildet _is sealed in this patent rods t and the receiving slots 15 in the prescribed bridge wire touches the tips of the electrodes are substantially parallel electrodes, regardless da ¹ jn whether he a Alike "" permanent or variable cross-section possesses, has an essentially rectilinear oestau and is coaxial to the axes of the electrodes tcogencle Aoscnniu yes urucKcnuraiues im we essentially corresponds to a semicircle and the receiving slots in the electrodes essentially run parallel to each other from the same direction into the two electrodes. 19. Self-igniting discharge lamp according to claim 15, characterized in that the free load-bearing section of the arch wire essentially in the shape of a letter "S"