WO2007093553A2

WO2007093553A2 - Electric lamp with a retaining pinch seal for the luminous body

Info

Publication number: WO2007093553A2
Application number: PCT/EP2007/051213
Authority: WO
Inventors: Rupert Goihl
Original assignee: Osram Gesellschaft mit beschränkter Haftung
Priority date: 2006-02-17
Filing date: 2007-02-08
Publication date: 2007-08-23
Also published as: DE202006002562U1; WO2007093553A3

Abstract

In the lamp (1) according to the invention, in particular a halogen incandescent lamp for mains voltage operation, the luminous body is pinched in at at least one retaining point (9b) within the lamp vessel (2) between a pinched-together subregion of the lamp vessel wall.

Description

description

Electric lamp with holding pinch for the lamp

Technical area

The invention relates to an electric lamp with light ^¬ body, in particular a halogen incandescent lamp, for the Be ^{¬ operation} on mains voltage, ie typically in the medium to high voltage range, for example, at some 10 volts to 120 volts and 240 volts in particular.

Typical of these lamps is a relatively long luminous body, which must be supported or held in the region between its two electrical connections to the power supply lines at least one location in order to prevent, inter alia, unintentional contact with the lamp vessel wall.

State of the art

Such a lamp is known for example from the document EP 0 173 995 A1. There, a single-sided ge ^¬ squeezed halogen incandescent lamp is disclosed having zweischenke- celled incandescent filament is suspended from a wire bracket. The disadvantage is that a separate wire holding bracket to ^¬ next formed and then introduced into the lamp vessel and must be fixed there to be able to hold the filament safely. In addition to cost and cost of the metallic wire retaining bracket but also causes Lichtbö ^¬ gene in the lamp and as a result of bursting of the lamp. The document DE 40 08 367 Al shows a side ge ^¬ squeezed halogen incandescent lamp with elongated filament extends in the direction of the lamp longitudinal axis, and is supported there at least at one point with two mutually AGAINST YOU berliegenden funnel-shaped from the lamp vessel material nubs.

This notching technology places relatively high demands on manufacturing precision and process control in order to ensure reliable holding of the incandescent filament, in particular when only one or a few nubs are used.

Presentation of the invention

The object of the present invention is to provide an alternative technology for mounting the luminous element in an electric lamp.

This object is achieved by an electric lamp having a lamp vessel and a luminous body, which is located inside the lamp vessel, characterized marked ^¬ characterized in that the filament is supported at least one hal ^¬ tion point within the lamp vessel by a Halitetungsquetschung.

Particularly advantageous embodiments can be found in the dependent claims.

The basic idea of the invention is therefore to squeeze the luminous body at at least one support location between a squeezed part region of the lamp vessel wall. The holder ^squeeze formed from the lamp vessel ^wall thus extends from the holder squeezed mounting location of the filament to the adjacent edge of the lamp vessel. The term lamp vessel wall also includes protuberances of the basic ^¬ form of the lamp vessel, as they are common, for example, as a so-called pump tip.

For this purpose, the luminous body is clamped onto a support, which leaves free the to be squeezed (n) support location (s). The carrier is then introduced together with the luminous body in the lamp vessel. In the immediately adjacent region of the or each holding point to be squeezed the Lam ^¬ pengefäßwand is heated, for example by means of flames or laser, and then compressed by pliers-like crimp jaws. After the luminous element has been fixed in this way within the lamp vessel by means of the holder pinch (s), the carrier is removed from the lamp bulb. Then the lamp can be filled and closed as usual.

The luminous body is typically formed as a filament out ^¬. The length thereof, say electrical resistance at a given wire diameter and - the material is tuned to the lamp terminal voltage and lamp intended Leis ^¬ processing. Depending on whether it is a lamp with double-sided or single-sided pinch seal for the power supply of the filament, the shape of the filament is substantially elongated or ty ^¬ pically U- or V-shaped. In any case, the incandescent filament has two or more sections that are designed to light up during operation. Each two luminous sections are connected by a non-luminous section. The holder pinches preferably hold the filament in one not lit in operation section, since there is no heat generated. In this way, an unwanted ^¬ wünschtes softening of the holders and possible further damage can be avoided in the lamp.

Brief description of the drawings

The invention is intended based on execution ^¬ examples are explained in detail. The figures show:

1a is a side view of a first Ausführungsbei ^¬ game of a lamp according to the invention with one-sided pinch seal,

1b is a sectional view of the lamp of Fig. Ia,

Ic is an end view of the lamp of Fig. Ia,

2a is a side view of a second Ausführungsbei ^¬ game of a lamp according to the invention with one-sided pinch seal,

2b is a sectional view of the lamp of Fig. 2a,

3a is a sectional view of a third embodiment ^¬ example of a lamp according to the invention with one-sided pinch seal,

FIG. 3 b shows a section rotated by 90 ° with respect to FIG. 3 a,

3c shows an end view of the in Fig. 3a, 3b Darge ^¬ presented lamp, 4a is a side view of an embodiment of a lamp according to the invention with double-sided pinch seal,

4b shows a side view rotated by 90 ° with respect to FIG. 4a,

4c is a sectional view of the lamp of Fig. 4b,

5a is a sectional view of another embodiment of a lamp according to the invention with one-sided pinch seal,

5b shows a comparison with FIG. 5a rotated by 90 ° section ^{¬ presentation} ,

Fig. 5c is a front view of the set shown in FIGS. 5a, 5b Darge ^¬ lamp,

6a shows a sectional representation of a further exemplary embodiment of a lamp according to the invention with a single-sided pinch seal,

Fig. 6b is an end view of the in Fig. 5a ^{dargestell ¬} th lamp.

Preferred embodiment of the invention

In the following, reference is made to the figures Ia -Ic, which show a side view, a sectional view taken along line AA and a front view of a first exporting ^¬ approximately example. This is a Ha ^¬ lied light bulb 1 having a substantially cylindrical lamp vessel 2 and a G9 glass base 3 for 240 V network operation. The formed from the material of the lamp vessel G9 glass base 3 comprises in addition to the U-shaped base contacts 4a, 4b and the pinch seal for the power supply, but here only marginally interested and well known to the skilled person and therefore will not be explained here. At its end remote from the socket, the lamp 1 has a pump tip 5, ie a melted pump tube for pumping out and filling the lamp vessel 2, on. Within the lamp vessel 2, a U-shaped filament 6 with two spiral legs 7a, 7b is arranged. At their end remote from the base, the two helical limbs 7a, 7b are connected to an arcuate, non-threaded connecting section 8. This connecting section 8 is held in the region of the pump tip 5 by means of two pinch holders 9a, 9b. For this purpose, the two pinch holders 9a, 9b are squeezed out of the material of the lamp vessel 2 by means of pincer-type crimping jaws, namely one each on the left and on the right of the pump tube. Thus, the production of this embodiment is largely compatible with existing methods with pump tube. This has the advantage, among other things, that conventional lamp manufacturing machines can be used with only minor adjustments.

Figures 2a and 2b show a side view and a sectional view along the line AA of another embodiment. It is again a halogen incandescent lamp 10 with a single-sided pinch seal. Similar features as in the figures Ia - Ic are provided here with the same reference numerals. The only difference, instead of the previous two, is a total of four pinch squeezing 9a, 9b, IIa, IIb. The two additional Halterquetschungen IIa, IIb divide the two spiral legs in two spiral segments 12a, 13a and 12b, 13b.

Figures 3a - 3c show another Ausführungsbei ^¬ play a halogen incandescent lamp 14 with a one-sided squeezing seal namely in side view, in sectional view along the line AA, as well as in a front view. Again, similar features as in the above Figu ^¬ ren with the same reference numerals. Here, however, the lamp vessel comprises a first conical-like part 15, which surrounds the incandescent filament with the helical limbs 7a, 7b, and a second shank-shaped part 16, which surrounds the first part as an integral reflector section. The optical reflector effect of the second bowl-shaped part 16 is realized by a mirror layer 17 vapor-deposited on its inner side.

Figures 4a - 4c show in a side view, a side rotated by 90 ° and a sectional view along the line AA an embodiment of a rod-shaped halogen incandescent lamp 18 according to the invention with double-sided pinch seal 19, 20. The lamp vessel 21 is tubular here. Within the lamp vessel 21 is axially a filament with two filament segments 22, 23 arranged on ^¬ . The filament is held in the middle by means of a holder pinch 24. On the opposite side, the tubular lamp vessel 21 has a pump tip 25.

FIGS. 5a-5c show a further embodiment of a halogen incandescent lamp according to the invention in a sectional view along the line AA, a sectional view along the line BB and in a front view. pe 18 with G9 glass base 3. In contrast to the embodiments shown in Figures 1-3, however, only a single Haltequetschung 27 is required here, which is subsequently set to the pump tip. This one Haltequetschung 27 holds the filament 6 in the connecting portion 28 of the two coil legs 7a, 7b. The lamp vessel 29 has a bowl-shaped From ^¬ section 30, the reflection layer having an optical ^¬ is provided 31st On the side opposite the base 3, the lamp vessel 29 is closed by a domarti ^¬ gene section 32, in the middle of which the already mentioned Haltequetschung 27 is arranged.

FIGS. 6a 6b show a longitudinal sectional representation and an end view of a variant of the first exemplary embodiment (compare FIGS. It is therefore likewise a halogen incandescent lamp 33 with a G9 glass base 3 for 240 V mains operation. The lamp vessel 34 has a circular diameter, but is elliptical in longitudinal section. Alternatively, an el- liptischer cross-section can be selected (not Darge ^¬ asserted). This is advantageous in lamps whose Lampenge ^¬ vessel is coated with a reflective infrared radiation layer. In this case, the helical limbs 7a, 7b of the U-shaped incandescent helix 6 are advantageously arranged in the two focal points of the elliptical cross section. Thereby, a major part of the infra-red radiation is reflected on ^¬ the two helical legs and thus the overall efficiency of the light improves the useful light regard. By means of ray tracing method, both the cross-sectional and the longitudinal section ^¬ form can be further optimized. The filament 6 is in indirect proximity of the pump tip 35 with two Haltequet ^{¬ ¬} scores 36 a, 36 b attached. As a result, the ideal shape of the lamp vessel is relatively little affected.

Claims

claims

1. Electric lamp (1) with o a lamp vessel (2), o a luminous body (6) which is located inside the lamp vessel, characterized in that the luminous body (6) at least one support ^¬ place within the lamp vessel (2) is held by a bracket squeezing (9a - 9b).

2. Lamp according to claim 1, wherein for the or each holding squeegee (9a, 9b) a portion of the wall of the

Lamp vessel (2) is squeezed together such that the or each Halterquetqueeschung (9a, 9b) of the pinched mounting location of the filament (2) extends to the adjacent edge of the Lampengefä- ßes (2).

3. Lamp according to claim 1 or 2, wherein the luminous body (6) is designed as a filament.

4. Lamp according to claim 3, wherein the filament (6) for use with mains voltage, in particular medium or high-voltage, designed.

5. The lamp of claim 3 or 4, wherein the filament (6) has two or more sections (7a, 7b) which are designed so that they light up in operation and are each connected by a non-luminous in operation section ,

6. Lamp according to claim 5, wherein the or each holding ^¬ tion squeezing (9a, 9b), the filament (6) holds in a non-operating in operation section.

7. Lamp according to one of the preceding claims, wherein the luminous body (6) has two sections connected to a Verbindungsab ^¬ leg and in particular U- or V-shaped.

8. Lamp according to claim 7, wherein the at least one Hal ^¬ terungsquetschung (9a, 9b) in the region of the connecting portion of the filament (6) is arranged.

9. Lamp according to claim 7, wherein in each case a support ^¬ crushing (IIa, IIb) is arranged in the region of each leg of the U-shaped filament.

10. Lamp according to one of claims 7 to 9, wherein the lamp vessel comprises an integral reflector portion (16) which surrounds the lamp body immediately surrounding the part (15) of the lamp vessel.

11. Lamp according to one of claims 7 to 10 with a So ^¬ ckel (3), in particular of the type G9.

12. The lamp according to claim 11, wherein the base (3) is formed from the material of the lamp vessel.

13. The lamp according to claim 12, wherein the formed from the material of the lamp vessel base (3) comprises a pinch ^¬ seal for the power supply.

14. A lamp according to any one of claims 1 to 6, wherein the lamp vessel (21) has an elongated shape and the at least one holder squeezing (24) in the region between the two ends (19, 20) is arranged.