EP0384240B1 - Kittlos gesockelte elektrische Lampe - Google Patents
Kittlos gesockelte elektrische Lampe Download PDFInfo
- Publication number
- EP0384240B1 EP0384240B1 EP90102595A EP90102595A EP0384240B1 EP 0384240 B1 EP0384240 B1 EP 0384240B1 EP 90102595 A EP90102595 A EP 90102595A EP 90102595 A EP90102595 A EP 90102595A EP 0384240 B1 EP0384240 B1 EP 0384240B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cap
- bulb
- lamp according
- clips
- insulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
- H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/05—Two-pole devices
- H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
- H01R33/09—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for baseless lamp bulb
Definitions
- the invention is based on a lamp without a cement according to the preamble of claim 1.
- Such lamps are particularly suitable for use in reflectors, in particular motor vehicle headlights.
- Known lamps of this type use, for example, a two-part base, in which the base stone is made of plastic (DE-GM 82 01 536).
- the metallic base sleeve is held in a receptacle of the base stone.
- the base stone is very complicated and therefore difficult to manufacture.
- a motor vehicle lamp with a two-part base is known from DE-GM 81 04 771, in which the base stone is made of ceramic.
- the attachment between the two base parts is carried out by a rivet, which leaves a lot of play and also requires an additional part.
- the optical quality of a headlight depends crucially on the quality of the attachment. As far as possible, it should not allow any play to avoid misalignment of the lamp with respect to the focus of the headlight.
- the object of the invention is to provide a lamp with a two-part base, which is characterized by a particularly simple and play-free connection between the two base parts.
- a particular advantage of the invention lies in the fact that the connection between the two base parts can be produced gently and quickly. It is also characterized by a high degree of adjustment accuracy, which is increasingly required, especially in modern headlights. Furthermore, this connection compensates for large tolerances of the base parts during assembly.
- the tolerance compensation is carried out in an astonishingly simple manner by the tabs of the base sleeve being bent towards the base stone and thus being able to adapt to the individual dimensions of the base stone, the edge of a base part experiencing a fixed stop of a defined height at the end of the other base part facing it.
- the metallic base sleeve can be manufactured with minimal tolerance.
- the tabs just lie on the end face of the base stone.
- the actual mounting of the base stone is achieved in the area of a 90 ° bend in the tabs.
- Fixing the base stone in the base sleeve is facilitated if the end face of the base stone has a recess for the entire tab. This depression can be superimposed on the cutout for the tab end.
- connection between the base stone and base sleeve described here is of particular importance if the base stone is made of ceramic, since ceramic parts have a considerably higher tolerance (approx.0.4 mm) than parts made of plastic (typical tolerance approx.0.05 mm) ).
- ceramic components are sensitive to impact loads, which is why protecting the material is of particular importance here.
- plastic parts the formation of deposits on the reflector by expensive subsequent heating or washing must be avoided.
- the simple type of connection also offers enough space on the base, so that both the use of round contacts and flat plugs (contact tabs) is made possible. This also opens up the possibility of producing a splash-proof design by an external potting.
- the lamp is manufactured, for example, by first adjusting and fixing the base sleeve and the lamp bulb with the luminous element to one another via a holding element. Only then is the base stone, which is already fitted with the contact elements, inserted from below into the base sleeve and the tabs on the base sleeve are angled.
- This procedure has the advantage that lamps in which a misalignment is detected during the ongoing quality control can be rejected before the base stone is installed. This makes it possible to disassemble and reassemble these lamps. In this way, the additional consumption can be reduced.
- the halogen incandescent lamp with 50 W power shown in FIGS. 1 and 2 is a lamp of the so-called type H7, which in certain applications replaces the lamp of the so-called type H1. In general, these lamps serve as separate high beams in car headlights.
- the cylindrical hard glass bulb 1, which is squeezed on one side, is filled with inert gas and a halogen additive and with an axial helix 2 equipped, which is held by two power supply lines, which are melted into the pinch 3.
- the pinch 3 is enclosed by a metallic holding element 4.
- it consists of two shell halves 5, each of which has a web 6 formed on the piston side, which opens into an apron facing away from the piston.
- the cone-shaped bulged end 8 of the apron 7 rests on the inside against the metallic base sleeve 9, which is designed as a hollow cylinder, and is connected to it by means of a laser welding L.
- the advantage of laser welding is that there are no moments at the welding point during the welding process and therefore the adjustment accuracy is not impaired.
- the base sleeve is also formed at the piston near the end of an adjusting ring 10, which has a number of recesses and knobs 11 to aid in correct positioning (FIG. 3).
- the base sleeve is equipped with a narrow collar 12 which is bent inwards. Both the adjusting ring 10 and the completely circumferential collar 12 each lie in a plane transverse to the lamp axis.
- the base sleeve 9 has two tabs 13 formed opposite one another. They are bent back inwards from the collar by 90 ° (in relation to the hollow cylinder by 180 °) and end just below the height of the adjusting ring.
- the end 14 of each tab is forked or sheared in the manner of a barb, the fork being divided into a middle piece 15 and two outer tines 16. The latter are punched out of the flesh of the flap from its end 14 and extend back to about half the length of the flap.
- a ceramic base stone 17 (made of steatite) is fitted into the base sleeve 9 and essentially has the shape of a solid cylinder (cf. FIG. 4). It has two kidney-shaped recesses 18 on the side in order to provide space for the ends 8 of the aprons.
- a circumferential groove 19 on the circumference of the end of the base stone remote from the piston guarantees a play-free stop on the collar 12 of the base sleeve.
- the base stone 17 also has two continuous longitudinal slots 20 into which the two tabs 13 are fitted. On the piston side, the longitudinal slots open into two semicircular cutouts 21, in which the tabs 13 end.
- the base stone 17 is held on the base sleeve 9 by an entanglement. It is based on the end 14 of the tabs being twisted. The twisting leads to a "shortening" of the effective length of the tab.
- the high tolerance in the thickness of the ceramic base stone is compensated for during twisting, since the twisting always starts at the bottom 22 of the semicircular recess. This is crucial for tolerance compensation.
- the forking of the tab ends 14 results in an even better freedom from play and an even more effective tolerance compensation, since the outer tines spread like barbs when shortening the bottom 22 caused by the twisting. Different tolerances are compensated for by different spreading angles of the outer tines.
- the base stone also has two axial bores 23.
- two metal tubes as Round contacts 24 riveted by widening their upper end. At some distance from the upper end, they are equipped with a circumferential bead 25, which acts as a stop on a recess 26 on the end of the base stone remote from the piston.
- the use of the round contacts which is made possible by the space-saving cabinet lock, is desirable compared to flat contacts, since a better contact to the connector is made on the socket side.
- the attachment of the power leads 27 is facilitated.
- the current leads 27 are angled from the pinch 3 to the round contacts 24 and are welded to the ends of the round contacts remote from the piston, where their inner cavity 28 tapers approximately to the diameter of the current leads.
- the invention is not restricted to the exemplary embodiment shown.
- the base stone is made of plastic. It is particularly advisable to limit the heat load on the base by attaching two shading elements to the holding part, which are shaped like butterfly wings. The semicircular recesses on the base stone can be omitted if the height of the base stone is reduced.
- Another exemplary embodiment is particularly protected against splash water or the like, the side of the base remote from the piston being additionally clad and sealed by an injection-molded plastic layer.
- the lamp is manufactured as follows: First, the round contacts are inserted into the base stone and riveted by widening their upper end. The base sleeve is then interlaced with the base stone.
- the piston is equipped with the holding element.
- Both assembled units are loosely assembled, with the power leads threaded into the round contacts. Now the lamp is adjusted in three dimensions. Finally, the holding element is welded to the base sleeve, the use of a laser ensuring that no more misalignment can take place.
- the further exemplary embodiment of a halogen incandescent lamp having a power of 50 W is also a lamp of the so-called type H7, which replaces the lamp of the so-called type H1 in certain applications.
- these lamps serve as high and low beams in car headlights.
- the cylindrical hard glass bulb 1 which is squeezed on one side, is filled with inert gas and a halogen additive and is equipped with an axial helix 2.
- Two power supply lines 27 for the coil are melted into the pinch 3.
- the pinch 3 is enclosed by a metallic holding element 4.
- the apron 7 which is directed away from the bulb and is arranged approximately parallel to the lamp axis.
- the cone-shaped Bulged end 8 of the apron 7 rests on the inside against a metallic base sleeve 9 designed as a hollow cylinder and is connected to it by means of a fusion weld.
- the base sleeve is also formed on the piston near the end of an adjusting ring 10, which has a number of recesses and knobs 11 as an aid for correct positioning.
- the adjusting ring 10 lies in a plane transverse to the lamp axis.
- two mutually opposite tabs 13 are formed, which are used for mounting a base block 17 and which are arranged axially parallel (13 ') before the base block is installed (shown in dashed lines).
- the ceramic base stone 17 (made of steatite), the height of which is somewhat less than that of the base sleeve, is fitted into the base sleeve 9 from below and has essentially the shape of a full cylinder. It has two kidney-shaped recesses 18 on the side in order to provide space for the ends 8 of the aprons 7.
- a radially outwardly projecting edge 15 ' which rotates at the end of the base stone remote from the piston, offers a stop for the base sleeve.
- the edge 15 ' is interrupted in the area of the tabs 13.
- the base stone 17 also has on its distal end surface 16 'two elongated, radially from the edge 15' inwardly facing recesses 12 ', in which the two right-angled tabs 13 are embedded. At the inner edge of each recess 12 ', an additional, deeper recess 14' is made, in which the tab ends 19 'are bent. With this arrangement, the tabs are located 13 not flat on the end surface 16 ', but are convex with respect to the end surface 16'. This allows a particularly good compensation of the tolerances in dimensions, which are considerably higher for ceramic parts compared to plastic parts.
- the base stone also has two axial bores 20 '.
- these two metal tubes are riveted as round contacts 21 'by widening their upper end. At some distance from the upper end, they are equipped with a circumferential bead 22 ', which acts as a stop on a trough 23' at the end of the base stone remote from the piston.
- the current leads 27 are angled from the pinch 3 coming to the round contacts 21 'and welded to the ends of the round contacts remote from the piston, where the inner cavity 24' tapers approximately to the diameter of the current leads.
- a particularly good protection against splash water or the like. is achieved if the side of the base remote from the piston is additionally clad and sealed by a molded plastic layer.
- FIGS. 7 and 8 show a further exemplary embodiment of a car lamp of the H7 type.
- the hard glass bulb 31 and the filling as well as the axial filament 32 correspond to the second exemplary embodiment.
- the pinch 33 of the piston is resiliently clamped in a one-piece, approximately cup-shaped holding element 34 made of a copper alloy.
- the cup base 35 which faces the piston, has a double-T-shaped slot in which the pinch 33 is fitted.
- Four bumps 36 on the cup base 35 serve as a stop on which four projections 30, which are formed laterally on the pinch 33.
- the side wall of the cup-shaped holding element 34 is divided into three sections. The first is a circular ring 37 which is directly adjacent to the bottom of the cup and surrounds the pinch 33 relatively closely.
- the adjoining second section is a truncated cone 38, which in turn merges into the third section 39, again an axially parallel circular ring 39 with a larger diameter than the first circular ring.
- the circular ring 39 has at its end remote from the piston four tongues 41 distributed uniformly over the circumference, which are separated from one another by generous free spaces 42.
- the base sleeve 40 is an axially aligned hollow cylinder with a collar 43 which is bent outwards on the piston side over approximately half the height of the hollow cylinder.
- the fragmentary circular ring 39 of the holding element lies on the outside of the collar 43 and is welded to it in a manner known per se.
- an adjusting ring 44 is formed, which is placed approximately halfway up the hollow cylinder transversely to the lamp axis.
- the entire base sleeve 40, including the collar 43 and the adjusting ring 44, is made in one piece from a cylindrical part using the inverted pull method.
- the base sleeve is designed so that the holding element can be welded from the outside and thus easily accessible. This eliminates annoying holes, such as when welding on the inside of the base sleeve.
- the welding technology can be chosen arbitrarily (e.g. laser welding, resistance welding).
- the welding process which requires a certain contact pressure of the individual parts, can extremely stable configuration of base sleeve and holding element no longer lead to any deformation and associated misalignment of the lamp.
- the bottom 46a of the recess 46 runs parallel to the end surface 47.
- the bottom 46b is arranged at an angle to the end surface 47, so that the tab 45 'is bent by more than 90 ° and thereby the hold is improved ( Fig. 8a).
- the end 49 of the base sleeve remote from the piston rests on a radially outwardly projecting edge 50 of the base block, so that overall a backlash-free mounting of the base block in the base sleeve is achieved.
- the base stone is designed as a solid cylinder.
- the two power supply lines 51 which are led out of the pinch 33, are threaded into two tapered, continuous openings 54, which are provided near the axis in the base block 48, and are connected to the welding eyes 55 of two contact lugs 56 at the end surface 47 remote from the piston.
- the flat stamping bodies of the contact lugs 56 themselves are held in separate slots 57 which are each closely adjacent to the tapered openings 54.
- the end surface 47 of the base stone remote from the piston has two troughs 58, in each of which a conical opening 54 and a slot 57 open together, the welding eye 55 of the contact lug, which is angled 90 ° against the punch body of the contact lug, rests on the bottom of the trough 58.
- a bevel 60 is recessed on one side at the mouth of each slot 57 and rises towards the conical opening 54.
- the end 61 of each contact lug 56 protruding from the end face 59 forms a narrow arc over the welding eye and is slotted in the middle.
- the underside 63 of each arch half 62 facing the welding eyelet is bevelled so that the height of the arch half increases towards the center of the contact lug (FIG. 9a).
- the two bow halves 62 are rotated by a maximum of 90 ° in the direction of the bevel 60 (FIG. 7 or arrow in FIG. 9b) and rest on the latter.
- the exemplary embodiments according to FIGS. 7 and 8 are distinguished by a particularly low overall height of the lamp. It is 62 mm. Compared to the exemplary embodiment according to FIGS. 1 and 5, this can save approximately 13 mm in overall height.
- These very compact lamps meet the requirements of automotive engineering (e.g. low wind resistance).
- the low overall height is achieved through an optimized overall design of the base (including the holding element). It is also important to note the higher thermal load-bearing capacity of a ceramic base stone, which enables it to be closer to the piston than plastic materials.
- the tolerance compensation required when using ceramics is realized by particularly space-saving measures, while at the same time the necessary high adjustment accuracy had to be considered.
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8902247U DE8902247U1 (de) | 1989-02-24 | 1989-02-24 | Kittlos gesockelte elektrische Lampe |
DE8902247U | 1989-02-24 | ||
DE8907108U | 1989-06-09 | ||
DE8907108U DE8907108U1 (de) | 1989-06-09 | 1989-06-09 | Kittlos gesockelte elektrische Lampe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0384240A2 EP0384240A2 (de) | 1990-08-29 |
EP0384240A3 EP0384240A3 (de) | 1991-05-02 |
EP0384240B1 true EP0384240B1 (de) | 1994-04-20 |
Family
ID=25954406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90102595A Expired - Lifetime EP0384240B1 (de) | 1989-02-24 | 1990-02-09 | Kittlos gesockelte elektrische Lampe |
Country Status (6)
Country | Link |
---|---|
US (1) | US5010272A (hu) |
EP (1) | EP0384240B1 (hu) |
DD (1) | DD292994A5 (hu) |
DE (1) | DE59005400D1 (hu) |
ES (1) | ES2051398T3 (hu) |
HU (1) | HU202678B (hu) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9012292U1 (de) * | 1990-08-27 | 1990-10-31 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Kittlos gesockelte elektrische Lampe |
EP0493844A1 (en) * | 1990-12-03 | 1992-07-08 | Koninklijke Philips Electronics N.V. | Capped electric lamp |
DE9017224U1 (de) * | 1990-12-20 | 1991-03-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Kittlos gesockelte elektrische Lampe |
US5432400A (en) * | 1992-09-25 | 1995-07-11 | Gte Products Corporation | Lamp having interference-fit metallic bases |
US5331529A (en) * | 1993-03-17 | 1994-07-19 | Huang Shun Feng | Electrical lamp base system |
DE19602625A1 (de) * | 1996-01-25 | 1997-07-31 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Elektrische Lampe |
FR2798491B1 (fr) * | 1999-09-10 | 2001-11-23 | Intermec Scanner Technology Ct | Dispositif optoelectronique d'acquisition d'images de plans-objets, notamment de codes barres |
DE10121608A1 (de) * | 2001-05-04 | 2002-11-07 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Elektrische Lampe |
WO2003092031A1 (en) * | 2002-04-26 | 2003-11-06 | Phoenix Lamps India Limited | Incandescent electric lamp and socket assembly |
DE20300699U1 (de) * | 2003-01-16 | 2003-03-20 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München | Lampensockel und Lampe mit einem Lampensockel |
DE10325553A1 (de) * | 2003-06-05 | 2004-12-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Zweiseitig verschlossene Lampe |
US20060146541A1 (en) * | 2003-06-17 | 2006-07-06 | Johannes Antonius Van Heeswijk | Lamp comprising an envelope part and a cap part |
JP2007515039A (ja) | 2003-08-01 | 2007-06-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 照明器具及び照明器具を製造する方法 |
US7227308B2 (en) * | 2003-11-24 | 2007-06-05 | General Electric Company | Assembly for precision focus of compact PAR lamps |
DE102005028506A1 (de) * | 2005-06-17 | 2006-12-21 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampenring, Lampe und Sockelmaschine |
DE102010002650B4 (de) | 2010-03-08 | 2012-11-22 | Osram Ag | Halogenglühlampe für Fahrzeugscheinwerfer |
DE102010039412A1 (de) * | 2010-08-17 | 2012-02-23 | Osram Ag | Hochdruck-Entladungslampe und Verfahren zur Herstellung einer Hochdruckentladungslampe |
CN102280359A (zh) * | 2011-07-26 | 2011-12-14 | 句容市宝正照明电器有限责任公司 | 一种汽车卤素灯灯座 |
CN104913626A (zh) * | 2015-05-28 | 2015-09-16 | 洛阳驰达自动化设备制造有限公司 | 一种led灯管胶泥微波烘干装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2033748A (en) * | 1933-06-28 | 1936-03-10 | Westinghouse Lamp Co | Radio tube base |
DE2932638A1 (de) * | 1979-08-11 | 1981-02-26 | Philips Patentverwaltung | Elektrische lampe mit einem huelsenfoermigen sockel |
DE8104771U1 (de) * | 1981-02-20 | 1982-08-05 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Sockel einer halogengluehlampe |
DE3128346A1 (de) * | 1981-07-17 | 1983-01-27 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Verfahren zur herstellung einer halogengluehlampe fuer kraftfahrzeugscheinwerfer |
DE8121528U1 (de) * | 1981-07-22 | 1982-11-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Zweifaden-halogengluehlampe fuer kraftfahrzeugscheinwerfer |
DE8201536U1 (de) * | 1982-01-22 | 1983-06-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Halogengluehlampe |
JPS63451U (hu) * | 1986-06-20 | 1988-01-05 | ||
DE3806978A1 (de) * | 1988-03-03 | 1989-09-14 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Kittlos gesockelte elektrische lampe |
-
1990
- 1990-02-09 DE DE59005400T patent/DE59005400D1/de not_active Expired - Fee Related
- 1990-02-09 ES ES90102595T patent/ES2051398T3/es not_active Expired - Lifetime
- 1990-02-09 EP EP90102595A patent/EP0384240B1/de not_active Expired - Lifetime
- 1990-02-20 US US07/482,289 patent/US5010272A/en not_active Expired - Fee Related
- 1990-02-22 DD DD90338059A patent/DD292994A5/de not_active IP Right Cessation
- 1990-02-22 HU HU90904A patent/HU202678B/hu not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HU202678B (en) | 1991-03-28 |
US5010272A (en) | 1991-04-23 |
HUT53246A (en) | 1990-09-28 |
EP0384240A2 (de) | 1990-08-29 |
HU900904D0 (en) | 1990-05-28 |
DE59005400D1 (de) | 1994-05-26 |
DD292994A5 (de) | 1991-08-14 |
EP0384240A3 (de) | 1991-05-02 |
ES2051398T3 (es) | 1994-06-16 |
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