CA1164926A - Electric lamp with a sleeve-shaped cap - Google Patents
Electric lamp with a sleeve-shaped capInfo
- Publication number
- CA1164926A CA1164926A CA000357393A CA357393A CA1164926A CA 1164926 A CA1164926 A CA 1164926A CA 000357393 A CA000357393 A CA 000357393A CA 357393 A CA357393 A CA 357393A CA 1164926 A CA1164926 A CA 1164926A
- Authority
- CA
- Canada
- Prior art keywords
- inner sleeve
- cap
- lamp
- lugs
- slots
- 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
Links
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
Abstract
ABSTRACT:
In an electric lamp with a sleeve-shaped cap and an inner sleeve carrying the bulb, the cap has at least two lugs protruding inwards and the inner sleeve is pro-vided with at least two slots on its cylindrical sheath, which engage the lugs. The lugs and the slots provide the fixation of the cap to the inner sleeve without the appli-cation of heat.
In an electric lamp with a sleeve-shaped cap and an inner sleeve carrying the bulb, the cap has at least two lugs protruding inwards and the inner sleeve is pro-vided with at least two slots on its cylindrical sheath, which engage the lugs. The lugs and the slots provide the fixation of the cap to the inner sleeve without the appli-cation of heat.
Description
2~`i PHD 79~093 -1-The invention relates to an electric lamp with a bulb and a sleeve-shaped cap, in which a cylindrical inner sleeve carrying the bulb is inserted.
In the case of normal lamps of this kind (e.g.
our DE-OS 1 48g 414 which was made available to the public on March 6, 1969 or FR-P~ 769 029 which was published on August 17, 1934 and is owned by Compagnie de Signaux et d'entreprises electriquesj the cap and the inner sleeve are joined together by soldering or welding after assembly.
Connections of this kind are troublesome and expensive.
There is also the problem that the material can be des-troyed during spot welding if low thicknesses are used.
The invention is therefore based on the problem of creating an electric lamp whose cap and inner sleeve can be connected with no additional heat treatment, such as welding or soldering.
In the case of an electric lamp of the aforemen-tioned type, this problem is solved, according to the invention, by the sleeve shaped cap having at least two lugs protruding inwards~and the inner sleeve being pro-vided on its cylindrical sheath with at least two slots extending in the direction of the lamp axis, which slots open into the end of the inner sleeve remote from the bulb and engage the lugs.
~ In this way a purely mechanical fastening is achieved between lamp cap and inner sleeve.
.
In~one embodiment, the lugs are formed in the shape of protrusions pushed inwards from the metal walI of : ~
the cap. Of course, the lugs can alternatively be formed in the shape of pins attached to the cap and protrudinginwards.
Due to the combined effect of the inner sleeve's slots and the cap lugs, the cap and inner sleeve are guaranteed not to twist relative to each other. Movement in the direction;of the axis is prevented if the power ~ supply leads protruding ~from the bulb are tightened and :: :
::::::
, : , : .
- .
PHD 79-093 _~_ 14-3-1980 soldered to the cap contacts.
The slots may be shaped so that they widen -to -the edge. The cap and inner sleeve can then be pu-t together easil~, without the two parts having to be precisely ad-justed to one another be~orehand.
If, ~or mechanical reasons ~or instance, the powersupply leads are not suitable as a means o~ preventing axial movement between the cap and the inner sleeve, then in an advantageous version of the lamp according to the invention the slot can be provided with spring clips which are pressed apart by the cap lugs during insertion of the inner sleeve into the cap, and in the ~inal position of the inner sleeve spring back behind the lugs.
In this way the spring clips o~ the inner sleeve actually snap in b0hind the cap lugs, thus~ ensuring that the inner sleeve is firmly secured in the cap, even in the direction of the axis.
The clips may consist o~ inwardly-bent spring-loaded edges of the inner sleeve's cylindrical sheath adjacent 20~ the slots.
The ~amps according to the inven-tion may be in-candescent lamps used in motor vehiGles, for example as rear lights or as winker lamps.
Two embodiments o:~ lamps according to the invention ara no~ described in more detail on the basis of the diagram;
Fig. 1 shows a longitudinal section through an incandescent~lamp, the bulb o~ which is secured to an inner sleeve, which in turn is housed in a cap;
~;~ 30 Fig. 2 shows a longitudinal section through the lamp as in Figure 1~ along the line II-II;
Fig. 3 shows a top view onto the inner sleeve of the lamp as in Figures 1 and 2, on a larger scale;
Fig. 4 shows a longitudinal section through the inner sleeve as in Fig. 3, along the line I~-IV;
Fig. 5 shows a longitudinal section~turned through 90, through the inner sleeve along the line ~-V in Fig. 4;
Figs. 6 and 7 show two longitudinal sections, turned .
.
~ 2~
PHD 79-O93 ~3~ 14-5-1980 through 9O, of an incandescent lamp with a different kind of inner slee~e;
Fig. 8 shows a top view onto the inner sleeve of the lamp in Figs. 6 and 7 on a larger scale;
Fig. 9 shows a longitudinal section through the inner slee~e as in Fig. 8, along the line IX-IX;
Fig. 10 shows a longitudinal section, turned through 9O, through the inner sleeve, along line X-X of Fig. 9;
Fig. 11 shows a cross-section through the inner slee~e along line XI-XI of ~ig. 10.
In Figs. 1 and 27 1 is a bulb, m~de for instance of hard glass, in a small halogen incandescent lamp, which at its end has a pinch 2 which is rectangular in cross-section and in which power leads 3 and 4, leading to a l5 ~ coil 5~ are embedded9 the ends 6 and 7 of which protrude from the pinch 2.
The lamp bulb 1, together with i~ts pinch 2, is fixed n a coverplate 8 of a metal inner sleeve 9 (Figs. 3 to 5).
or this purpose, two holding clips 10 are pressed out 20~ of the co~erpla-te 8 at right angles, the distance between them corresponding~to the thickness o~ the Pinch 2. The pinch 2 is;jammed into~the~opening 11 thus created in the coverplate~8,~ until it comes up against the bulb 1.
The inner~sleeve 9 is pro~ided on its cylindrical 25 ~she~th ~12 with two slots 1~4 e~tending in the direction of the~lamp axis a~ far~ai the édge 13 remote from bulb i and opening into the edge 13, The inner slee~e 9 is placed tightly in a metal sl~eeve-shaped cap 1~5O For~this purpose, the cap 15 has two 30~ lugs;16~protruding inwards, o~er which the slots 14 of the in~er sleeve 9 fit, when the latter is inserted into the cap;;15 ~;By~thi~s means the oap 15 and the inner slee~e 9 are~guarante0d against twisting~relati~e to one Qnother.
The~inner sleeve 9 is pushed into~the cap 15 until the cap 35~ lugs 16 come up agàinst the end of the slots 14 in the cylindrical sheath 12 of t~e inner slee~e 9. The ends 6 and 7 of the power leads 3 and 4 are then soldered to the cap contacts 17 and 18 after being tightened~ so that the ': , .:
.. . .. . .
~6'~
PHD 79-093 ~4~
inner slee~e 9 in the cap 15 is also secured in the direc-tion of the axis.
Figs. 6 to 11 show another embodiment of the lamp according to the invention, in which the axial securing of the inner sleeve in the lamp cap is done differently. The same parts have been given the same references as in Figs.
1 to 5. In this embodiment, however, the holding clips 10 in the coverplate 8 of the i~mer sleeve 9 are not at right angles, but are simply bent inwards at an angle. On its two major surfaces, the pinch 2 of the lamp bulb 1 has shoulders 19, running at right angles to the lamp's longi-tudinal axis, behind which the holding clips 10 of the inner sleeve 9, bent at an angle, lock into position when the lamp bulb 1 is inserted. This type of plate is known from U.S. Patent 4119 877 which issued on October 10~ 1978 and is assigned to U.S. Philips Corporation.
The inner sleeve 9 is again provided with slots 24, which open into the edge 13 of the cylindrical sheath 12 of the inner sleeve 9. However, the slots 24 in this case have spring clips 20 in their central part, which protrude inwards and consist of inwardly-bent edges of the cylindrical sheath 12 adjacent the slot. These spring clips 20 reduce the width of the slots 24 somewhat, but are pressed apart by the cap lugs 16 when the inner sleeve :
9 is inserted into the sleeve-shaped cap 15, and in the final position of the inner sleeve 9 spring back behind the lugs 16, so that the inner sleeve 9 is axially secured in the cap 15. (Fig. 7).
: :
In the case of normal lamps of this kind (e.g.
our DE-OS 1 48g 414 which was made available to the public on March 6, 1969 or FR-P~ 769 029 which was published on August 17, 1934 and is owned by Compagnie de Signaux et d'entreprises electriquesj the cap and the inner sleeve are joined together by soldering or welding after assembly.
Connections of this kind are troublesome and expensive.
There is also the problem that the material can be des-troyed during spot welding if low thicknesses are used.
The invention is therefore based on the problem of creating an electric lamp whose cap and inner sleeve can be connected with no additional heat treatment, such as welding or soldering.
In the case of an electric lamp of the aforemen-tioned type, this problem is solved, according to the invention, by the sleeve shaped cap having at least two lugs protruding inwards~and the inner sleeve being pro-vided on its cylindrical sheath with at least two slots extending in the direction of the lamp axis, which slots open into the end of the inner sleeve remote from the bulb and engage the lugs.
~ In this way a purely mechanical fastening is achieved between lamp cap and inner sleeve.
.
In~one embodiment, the lugs are formed in the shape of protrusions pushed inwards from the metal walI of : ~
the cap. Of course, the lugs can alternatively be formed in the shape of pins attached to the cap and protrudinginwards.
Due to the combined effect of the inner sleeve's slots and the cap lugs, the cap and inner sleeve are guaranteed not to twist relative to each other. Movement in the direction;of the axis is prevented if the power ~ supply leads protruding ~from the bulb are tightened and :: :
::::::
, : , : .
- .
PHD 79-093 _~_ 14-3-1980 soldered to the cap contacts.
The slots may be shaped so that they widen -to -the edge. The cap and inner sleeve can then be pu-t together easil~, without the two parts having to be precisely ad-justed to one another be~orehand.
If, ~or mechanical reasons ~or instance, the powersupply leads are not suitable as a means o~ preventing axial movement between the cap and the inner sleeve, then in an advantageous version of the lamp according to the invention the slot can be provided with spring clips which are pressed apart by the cap lugs during insertion of the inner sleeve into the cap, and in the ~inal position of the inner sleeve spring back behind the lugs.
In this way the spring clips o~ the inner sleeve actually snap in b0hind the cap lugs, thus~ ensuring that the inner sleeve is firmly secured in the cap, even in the direction of the axis.
The clips may consist o~ inwardly-bent spring-loaded edges of the inner sleeve's cylindrical sheath adjacent 20~ the slots.
The ~amps according to the inven-tion may be in-candescent lamps used in motor vehiGles, for example as rear lights or as winker lamps.
Two embodiments o:~ lamps according to the invention ara no~ described in more detail on the basis of the diagram;
Fig. 1 shows a longitudinal section through an incandescent~lamp, the bulb o~ which is secured to an inner sleeve, which in turn is housed in a cap;
~;~ 30 Fig. 2 shows a longitudinal section through the lamp as in Figure 1~ along the line II-II;
Fig. 3 shows a top view onto the inner sleeve of the lamp as in Figures 1 and 2, on a larger scale;
Fig. 4 shows a longitudinal section through the inner sleeve as in Fig. 3, along the line I~-IV;
Fig. 5 shows a longitudinal section~turned through 90, through the inner sleeve along the line ~-V in Fig. 4;
Figs. 6 and 7 show two longitudinal sections, turned .
.
~ 2~
PHD 79-O93 ~3~ 14-5-1980 through 9O, of an incandescent lamp with a different kind of inner slee~e;
Fig. 8 shows a top view onto the inner sleeve of the lamp in Figs. 6 and 7 on a larger scale;
Fig. 9 shows a longitudinal section through the inner slee~e as in Fig. 8, along the line IX-IX;
Fig. 10 shows a longitudinal section, turned through 9O, through the inner sleeve, along line X-X of Fig. 9;
Fig. 11 shows a cross-section through the inner slee~e along line XI-XI of ~ig. 10.
In Figs. 1 and 27 1 is a bulb, m~de for instance of hard glass, in a small halogen incandescent lamp, which at its end has a pinch 2 which is rectangular in cross-section and in which power leads 3 and 4, leading to a l5 ~ coil 5~ are embedded9 the ends 6 and 7 of which protrude from the pinch 2.
The lamp bulb 1, together with i~ts pinch 2, is fixed n a coverplate 8 of a metal inner sleeve 9 (Figs. 3 to 5).
or this purpose, two holding clips 10 are pressed out 20~ of the co~erpla-te 8 at right angles, the distance between them corresponding~to the thickness o~ the Pinch 2. The pinch 2 is;jammed into~the~opening 11 thus created in the coverplate~8,~ until it comes up against the bulb 1.
The inner~sleeve 9 is pro~ided on its cylindrical 25 ~she~th ~12 with two slots 1~4 e~tending in the direction of the~lamp axis a~ far~ai the édge 13 remote from bulb i and opening into the edge 13, The inner slee~e 9 is placed tightly in a metal sl~eeve-shaped cap 1~5O For~this purpose, the cap 15 has two 30~ lugs;16~protruding inwards, o~er which the slots 14 of the in~er sleeve 9 fit, when the latter is inserted into the cap;;15 ~;By~thi~s means the oap 15 and the inner slee~e 9 are~guarante0d against twisting~relati~e to one Qnother.
The~inner sleeve 9 is pushed into~the cap 15 until the cap 35~ lugs 16 come up agàinst the end of the slots 14 in the cylindrical sheath 12 of t~e inner slee~e 9. The ends 6 and 7 of the power leads 3 and 4 are then soldered to the cap contacts 17 and 18 after being tightened~ so that the ': , .:
.. . .. . .
~6'~
PHD 79-093 ~4~
inner slee~e 9 in the cap 15 is also secured in the direc-tion of the axis.
Figs. 6 to 11 show another embodiment of the lamp according to the invention, in which the axial securing of the inner sleeve in the lamp cap is done differently. The same parts have been given the same references as in Figs.
1 to 5. In this embodiment, however, the holding clips 10 in the coverplate 8 of the i~mer sleeve 9 are not at right angles, but are simply bent inwards at an angle. On its two major surfaces, the pinch 2 of the lamp bulb 1 has shoulders 19, running at right angles to the lamp's longi-tudinal axis, behind which the holding clips 10 of the inner sleeve 9, bent at an angle, lock into position when the lamp bulb 1 is inserted. This type of plate is known from U.S. Patent 4119 877 which issued on October 10~ 1978 and is assigned to U.S. Philips Corporation.
The inner sleeve 9 is again provided with slots 24, which open into the edge 13 of the cylindrical sheath 12 of the inner sleeve 9. However, the slots 24 in this case have spring clips 20 in their central part, which protrude inwards and consist of inwardly-bent edges of the cylindrical sheath 12 adjacent the slot. These spring clips 20 reduce the width of the slots 24 somewhat, but are pressed apart by the cap lugs 16 when the inner sleeve :
9 is inserted into the sleeve-shaped cap 15, and in the final position of the inner sleeve 9 spring back behind the lugs 16, so that the inner sleeve 9 is axially secured in the cap 15. (Fig. 7).
: :
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An electric lamp with a bulb and a sleeve-shaped cap in which a cylindrical inner sleeve carrying a bulb is inserted, in which the sleeve-shaped cap has at least two lugs protruding inwards and the inner sleeve is pro-vided on its cylindrical sheath with at least two slots extending in the direction of the lamp axis, which slots open into the end of the inner sleeve remote from the bulb and engage the lugs.
2. A lamp as claimed in Claim 1, in which the lugs are formed in the shape of protrusions pushed inwards from the metal wall of the cap.
3. A lamp as claimed in Claim 1 or 2, in which the slots widen towards the end of the inner sleeve remote from the bulb.
4. A lamp as claimed in Claim 1, in which the slots are provided with spring clips, which are pressed apart by the cap lugs during insertion of the inner sleeve into the cap, and in the final position of the inner sleeve spring back behind the lugs.
5. A lamp as claimed in Claim 4, in which the clips consist of inwardly-bent spring-loaded edges of the inner sleeve's cylindrical sheath adjacent the slots.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2932638.3 | 1979-08-11 | ||
| DE19792932638 DE2932638A1 (en) | 1979-08-11 | 1979-08-11 | ELECTRIC LAMP WITH A SOCKET-BASED BASE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1164926A true CA1164926A (en) | 1984-04-03 |
Family
ID=6078259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000357393A Expired CA1164926A (en) | 1979-08-11 | 1980-07-31 | Electric lamp with a sleeve-shaped cap |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4396860A (en) |
| EP (1) | EP0024060B1 (en) |
| JP (1) | JPS5628462A (en) |
| CA (1) | CA1164926A (en) |
| DE (2) | DE2932638A1 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2933359A1 (en) * | 1979-08-17 | 1981-03-26 | Philips Patentverwaltung GmbH, 22335 Hamburg | ELECTRIC LAMP WITH A SOCKET-BASED BASE |
| NL8102594A (en) * | 1981-05-27 | 1982-12-16 | Philips Nv | ELECTRIC LAMP WITH A MECHANICALLY ATTACHED LAMP BASE. |
| NL8103436A (en) * | 1981-07-21 | 1983-02-16 | Philips Nv | ELECTRIC LAMP WITH KITLESS FIXED LAMP BASE. |
| DE8121528U1 (en) * | 1981-07-22 | 1982-11-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | TWO-THREAD HALOGEN BULB FOR MOTOR VEHICLE HEADLIGHTS |
| DE8131006U1 (en) * | 1981-10-23 | 1983-04-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | ELECTRIC LAMP |
| JPS58159153U (en) * | 1982-04-19 | 1983-10-24 | ウシオ電機株式会社 | light bulb device |
| US4464600A (en) * | 1982-05-21 | 1984-08-07 | General Electric Company | Lamp unit having accurately positioned filament |
| US4463278A (en) * | 1982-05-21 | 1984-07-31 | General Electric Company | Lamp unit having accurately positioned filament |
| DE3221290A1 (en) * | 1982-06-05 | 1983-12-08 | Philips Patentverwaltung Gmbh, 2000 Hamburg | ELECTRIC LAMP WITH A SOCKET-BASED BASE |
| JPS5960962A (en) * | 1982-09-30 | 1984-04-07 | 株式会社東芝 | Tubular bulb |
| JPS6044358U (en) * | 1983-09-05 | 1985-03-28 | 株式会社小糸製作所 | light bulb with base |
| EP0171844B1 (en) * | 1984-08-17 | 1989-01-04 | Koninklijke Philips Electronics N.V. | Capped electric lamp |
| US4687965A (en) * | 1985-03-07 | 1987-08-18 | U.S. Philips Corporation | Capped electric lamp |
| US4647137A (en) * | 1985-03-26 | 1987-03-03 | Voltarc Tubes, Inc. | Lamp base connector assembly |
| JPH01103159U (en) * | 1987-12-26 | 1989-07-12 | ||
| DE59005400D1 (en) * | 1989-02-24 | 1994-05-26 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Electric lamp with no cement. |
| US5436526A (en) * | 1992-06-19 | 1995-07-25 | U.S. Philips Corporation | Method of placing a single-capped electric lamp in a lampholder, single-capped electric lamp designed for this purpose, and luminaire provided with the single-capped electric lamp |
| ES2100626T3 (en) * | 1993-07-05 | 1997-06-16 | Philips Electronics Nv | LAMP / REFLECTOR UNIT. |
| US5696424A (en) * | 1996-09-26 | 1997-12-09 | Osram Sylvania Inc. | Alignment structure for headlamp capsule |
| US6741034B2 (en) * | 2002-08-22 | 2004-05-25 | Osram Sylvania Inc. | Starting aid for high intensity discharge lamp |
| EP1403905A3 (en) * | 2002-09-30 | 2006-06-14 | Osram Sylvania, Inc. | Snap-on spring clip for ceramic HID lamp |
| US6997578B2 (en) * | 2003-05-09 | 2006-02-14 | Steril-Aire, Inc. | Environmentally resistant germicidal system |
| US10271383B2 (en) * | 2015-10-13 | 2019-04-23 | Applied Materials, Inc. | Lamp base adapter design for baseless lamps |
| CN110227870A (en) * | 2018-12-26 | 2019-09-13 | 保定来福汽车照明集团有限公司 | A kind of lamp cap weldering mud moulding tooling |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2692154A (en) * | 1950-06-21 | 1954-10-19 | Gen Electric | Electric lamp base construction |
| NL272114A (en) * | 1960-12-05 | |||
| NL288232A (en) * | 1963-01-28 | |||
| NL288883A (en) * | 1963-02-12 | |||
| JPS5249577Y2 (en) * | 1973-02-10 | 1977-11-10 | ||
| HU169187B (en) * | 1974-07-03 | 1976-10-28 | ||
| DE7526777U (en) * | 1975-08-23 | 1976-06-03 | Philips Patentverwaltung Gmbh, 2000 Hamburg | ELECTRIC LAMP WITH BASE PLATE |
| DE2605433C3 (en) * | 1976-02-12 | 1979-01-25 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Electric light bulb with centering ring |
| DE2814461A1 (en) * | 1978-04-04 | 1979-10-18 | Patra Patent Treuhand | ELECTRIC LAMP |
-
1979
- 1979-08-11 DE DE19792932638 patent/DE2932638A1/en not_active Withdrawn
-
1980
- 1980-07-21 EP EP80200708A patent/EP0024060B1/en not_active Expired
- 1980-07-21 DE DE8080200708T patent/DE3062281D1/en not_active Expired
- 1980-07-31 CA CA000357393A patent/CA1164926A/en not_active Expired
- 1980-08-06 US US06/175,630 patent/US4396860A/en not_active Expired - Lifetime
- 1980-08-08 JP JP10839880A patent/JPS5628462A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6310863B2 (en) | 1988-03-09 |
| DE3062281D1 (en) | 1983-04-14 |
| US4396860A (en) | 1983-08-02 |
| EP0024060A1 (en) | 1981-02-18 |
| DE2932638A1 (en) | 1981-02-26 |
| EP0024060B1 (en) | 1983-03-09 |
| JPS5628462A (en) | 1981-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |