EP1745501A1 - Glühwendel für eine glühlampe und glühlampe - Google Patents
Glühwendel für eine glühlampe und glühlampeInfo
- Publication number
- EP1745501A1 EP1745501A1 EP05748161A EP05748161A EP1745501A1 EP 1745501 A1 EP1745501 A1 EP 1745501A1 EP 05748161 A EP05748161 A EP 05748161A EP 05748161 A EP05748161 A EP 05748161A EP 1745501 A1 EP1745501 A1 EP 1745501A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filament
- incandescent
- lamp
- lamp vessel
- outlets
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/18—Mountings or supports for the incandescent body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/14—Incandescent bodies characterised by the shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
- H01K1/325—Reflecting coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/38—Seals for leading-in conductors
Definitions
- the invention relates to a filament for an incandescent lamp according to the preamble of claim 1 and an incandescent lamp with such a filament.
- Such an incandescent filament is disclosed, for example, in European laid-open publication EP 1 255 279 A2.
- EP 1 255 279 A2 This document describes a halogen incandescent lamp, the dimension of which is a maximum of only 6 mm across its longitudinal extent. This lamp is intended for use in a flashlight.
- the incandescent filament of this halogen incandescent lamp has two filament outlets, each of which is welded to a power supply wire.
- the two filament outlets of the filament according to the invention each have an angled leg, which are arranged in a common plane running parallel to the winding axis of the filament.
- an axial alignment of the incandescent filament can be offset in parallel in an axially symmetrical lamp vessel, which is sealed at one end, without additional measures for the axis of symmetry of the lamp vessel.
- the angled filament outlets are each connected to a power supply part embedded in the sealed end of the lamp vessel.
- a frame for holding the incandescent filament in the lamp vessel can therefore be dispensed with.
- the two filament outlets of the filament according to the invention are each L-shaped. This means that each spiral outlet is only angled once and at right angles.
- a first L-leg of each filament exit is connected to the area of the incandescent filament responsible for the light emission, while a second L-leg is angled at a right angle therefrom, so that these second L-legs of the two filament exits in a common, offset parallel to the winding axis the filament extending plane are arranged.
- the incandescent filament according to the invention is particularly well suited for use in incandescent lamps, preferably halogen incandescent lamps, which, for the purpose of directed light emission, have an axially symmetrical lamp vessel provided with a light-reflecting coating and an axially aligned incandescent filament which is arranged parallel to the lamp vessel axis.
- the incandescent lamp according to the invention has an axially symmetrical, translucent lamp vessel which is sealed at one end and provided with current feedthroughs, and an incandescent filament which is axially aligned in the lamp vessel and is arranged offset parallel to the lamp vessel axis, the incandescent filament having two angled legs , which are arranged in a common plane parallel to the winding axis of the incandescent filament, and wherein the angled legs are each connected to a power supply part embedded in the sealed end of the lamp vessel.
- the power supply parts embedded in the sealed end of the lamp vessel, with which the angled legs are connected are each advantageously a metal foil, in particular a molybdenum foil, which serve on the one hand as a power supply for the incandescent filament and on the other hand are suitable for sealing the lamp vessel, since they can be melted gas-tight in the sealed end of the lamp vessel.
- the lamp vessel of the incandescent filament according to the invention is preferably provided with a light-reflecting coating which extends over part of the circumference of the lamp vessel, and the incandescent filament is preferably arranged offset parallel to the lamp vessel axis in the direction of the light-reflecting coating in order to achieve directional light radiation in a preferred solid angle ,
- FIG. 1 A filament for an incandescent lamp according to the first embodiment of the invention
- Figure 2 A filament for an incandescent lamp according to the second embodiment of the invention
- Figure 3 A side view of an incandescent lamp according to the preferred embodiment of the invention in a schematic representation
- FIG. 4 shows a schematic illustration of the incandescent lamp shown in FIG. 3 in a side view rotated by an angle of 90 degrees around the longitudinal axis in relation to FIG. 3.
- the incandescent filaments 110 and 110 ′ shown in FIGS. 1 and 2 are simple Coiled tungsten filaments for a low-voltage halogen lamp with an electrical power consumption of approximately 20 watts are provided.
- These incandescent filaments 110 and 110 ' have a coiled area 1101 and 1101' responsible for the light emission and two coiled filament outlets 1102, 1103 and 1102 ', 1103' connected to them.
- These spiral outlets 1102, 1103 or 1102 ', 1 103' each have an angled leg 11021, 11031 or 11021 ', 11031'.
- the angled legs 11021, 11031 of the two filament outlets 1102, 11.03 are arranged in a common plane running parallel to the winding axis of the filament 110.
- the two legs 1 1021, 11031 also run parallel to one another.
- An analogous statement also applies to the angled legs 1 1021 ', 1 1031' of the two filament outlets 1102 ', 1 103' of the incandescent filament HO 'according to the second exemplary embodiment.
- the filament outlets 1 102, 1 103 and 1102 ', 1 103' of the filament 1 10 and 1 10 ' are L-shaped, that is, they are angled only once at right angles.
- a first L-leg 1 1022, 1 1032 or 1 1022 ', 1 1032' is connected directly to the area 1 101 or 1 101 'of the filament 1 10 or 1 10' responsible for the light emission, while the second L - Legs 1 1021, 1 1031 or 1 1021 ', 1 1031' is angled at right angles from the respective first L-leg.
- the second L-legs 1 1021, 1 1031 of the two filament outlets of the filament 1 10 are each welded to a molybdenum foil 123, 124 embedded in the sealed end 101 of the lamp vessel 100 of the halogen incandescent lamp shown in FIGS. 3 and 4.
- An analogous statement also applies to the L-legs 1 1021 ', 1 1031' of the filament outputs of the incandescent filament 1 10 'according to the second exemplary embodiment, if this is used in the lamp instead of the incandescent filament 1 10'.
- the incandescent filaments 1 10, 1 10 'each have an outer diameter of 2.27 mm and their winding, which is responsible for the light emission, has a length of 4.19 mm.
- filaments are designed for a nominal voltage of 12 volts and an electrical output of 20 watts.
- the only difference between the two incandescent filaments 110, 110 ' is the angle which the first L-legs 11022, 1 1032 and 11022', 11032 'of the two filament outlets of the respective incandescent filament form.
- the exemplary embodiment of the incandescent lamp shown in FIGS. 3 and 4 is a halogen incandescent lamp with an electrical power consumption of approximately 20 watts.
- This lamp has a lamp vessel 100 made of quartz glass, which is sealed gas-tight at one end by means of a pinch seal 101.
- the lamp vessel 100 also has a circular cylindrical vessel section 102 and a pump stem attachment 103 arranged diametrically to the pinch seal 101.
- a filament 110 according to FIG. 1 is arranged inside the lamp vessel 100.
- the angled legs 1 1021, 1 1031 of their two spiral outlets are each connected to a gas-tight molybdenum foil 123, 124 embedded in the pinch seal 101.
- the molybdenum foils 123, 124 are each connected to a contact pin 125, 126 of the halogen incandescent lamp protruding from the pinch seal 101.
- the circular cylindrical vessel section 102 is provided with a light-reflecting coating 104 on its outer surface.
- the coating 104 extends over 50 percent of the circumference of the circular cylindrical vessel section 102 and extends as far as the pump stem attachment 103. In other words, the coating 104 covers a half-shell of the cylindrical lamp vessel portion 102 and is continued up to the pump stem attachment 103.
- the coating 104 consists of a first light-reflecting silver layer applied directly to the surface of the lamp vessel, a second opaque chrome layer applied thereon and a third SiO 2 protective layer arranged on the chrome layer.
- the incandescent filament HO is aligned axially and offset parallel to the cylinder axis AA of the circular-cylindrical vessel section 102.
- the outer diameter of the lamp vessel 100 is 9.5 mm and its wall thickness is 1 mm.
- the axis 1 104 of the incandescent filament 1 10, which is identical to its winding axis, is displaced parallel to the cylinder axis AA by 2 mm in the direction of the coating 104.
- the two angled legs 1 1021 and 1 1031 of the filament branches of the incandescent filament 1 10 are welded to the molybdenum foil 123 and 124, respectively.
- the two angled legs 11021 and 11031 are arranged in a common plane, ie in the plane of the molybdenum foils 123, 124, which also contains the cylinder axis AA, and run parallel to one another.
- the axis that is, the winding axis 1 104 of the incandescent filament 110 is arranged outside the aforementioned plane, offset by 2 mm parallel to the cylinder axis AA. 3, the winding axis 1104 of the incandescent filament 110 extends approximately 2 mm below the plane defined by the angled legs 11021 and 11031.
- the pinch seal 101 is arranged in a G4 base (not shown).
- the invention is not limited to the exemplary embodiments of the invention explained in more detail above.
- a so-called cold light mirror can also be used, which is transparent to infrared radiation and reflects electromagnetic radiation from the visible spectral range.
- the two angled L-legs 1 1021, 1 1031 arranged in a common plane do not necessarily have to run parallel to one another, but their distance can increase, for example, in the direction of the molybdenum foils 123, 124.
- the invention can also be applied to incandescent lamps and filaments other than 20 watts.
Landscapes
- Resistance Heating (AREA)
- Electric Stoves And Ranges (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Endoscopes (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004023935A DE102004023935A1 (de) | 2004-05-12 | 2004-05-12 | Glühwendel für eine Glühlampe und Glühlampe |
PCT/DE2005/000808 WO2005112075A1 (de) | 2004-05-12 | 2005-05-02 | Glühwendel für eine glühlampe und glühlampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1745501A1 true EP1745501A1 (de) | 2007-01-24 |
EP1745501B1 EP1745501B1 (de) | 2008-09-10 |
Family
ID=34978951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05748161A Not-in-force EP1745501B1 (de) | 2004-05-12 | 2005-05-02 | Glühwendel für eine glühlampe und glühlampe |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080001522A1 (de) |
EP (1) | EP1745501B1 (de) |
JP (1) | JP2007536716A (de) |
CN (1) | CN1954405B (de) |
AT (1) | ATE408239T1 (de) |
CA (1) | CA2562854A1 (de) |
DE (2) | DE102004023935A1 (de) |
WO (1) | WO2005112075A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008026369A1 (de) | 2008-06-02 | 2009-12-03 | Osram Gesellschaft mit beschränkter Haftung | Glühlampe |
WO2010004483A2 (en) | 2008-07-07 | 2010-01-14 | Philips Intellectual Property & Standards Gmbh | Lamp |
DE102008054287A1 (de) * | 2008-11-03 | 2010-05-06 | Osram Gesellschaft mit beschränkter Haftung | Halogenglühlampe für den Betrieb an Netzspannung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3048200A (en) * | 1958-03-12 | 1962-08-07 | Westinghouse Electric Corp | Process of treating coiled articles |
NL6404941A (de) * | 1964-05-05 | 1965-11-08 | ||
GB1092405A (en) * | 1964-10-01 | 1967-11-22 | Gen Telephone And Electronic L | Method of making lamp filaments |
DE1589151A1 (de) * | 1966-12-19 | 1970-03-19 | Egyesuelt Izzolampa | Gespiegelte Gluehlampe mit Doppelkolben und Halogengasfuellung |
US3548244A (en) * | 1968-07-01 | 1970-12-15 | British Lighting Ind Ltd | Lamp having twin filaments and integral filament legs mounted in a bridge |
JPS5038975A (de) * | 1973-08-14 | 1975-04-10 | ||
NL7602483A (nl) * | 1976-03-10 | 1977-09-13 | Philips Nv | Spiegelkondensorlamp. |
US4227113A (en) * | 1978-10-18 | 1980-10-07 | Duro-Test Corporation | Incandescent electric lamp with partial light transmitting coating |
JPS58112241A (ja) * | 1981-12-25 | 1983-07-04 | 株式会社東芝 | マウントの製造方法 |
US5187405A (en) * | 1991-02-21 | 1993-02-16 | General Electric Company | Double filament incandescent lamp |
DE4420607A1 (de) * | 1994-06-13 | 1995-12-14 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Elektrische Glühlampe und Leuchtkörper für Glühlampen |
DE19707245A1 (de) * | 1997-02-25 | 1998-08-27 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zur Herstellung einer elektrischen Glühlampe |
-
2004
- 2004-05-12 DE DE102004023935A patent/DE102004023935A1/de not_active Withdrawn
-
2005
- 2005-05-02 US US11/579,157 patent/US20080001522A1/en not_active Abandoned
- 2005-05-02 WO PCT/DE2005/000808 patent/WO2005112075A1/de active IP Right Grant
- 2005-05-02 DE DE502005005335T patent/DE502005005335D1/de active Active
- 2005-05-02 JP JP2007511847A patent/JP2007536716A/ja not_active Ceased
- 2005-05-02 AT AT05748161T patent/ATE408239T1/de not_active IP Right Cessation
- 2005-05-02 CN CN200580015141.XA patent/CN1954405B/zh not_active Expired - Fee Related
- 2005-05-02 CA CA002562854A patent/CA2562854A1/en not_active Abandoned
- 2005-05-02 EP EP05748161A patent/EP1745501B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2005112075A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1954405A (zh) | 2007-04-25 |
DE502005005335D1 (de) | 2008-10-23 |
WO2005112075A1 (de) | 2005-11-24 |
ATE408239T1 (de) | 2008-09-15 |
EP1745501B1 (de) | 2008-09-10 |
CA2562854A1 (en) | 2005-11-24 |
CN1954405B (zh) | 2010-05-05 |
JP2007536716A (ja) | 2007-12-13 |
US20080001522A1 (en) | 2008-01-03 |
DE102004023935A1 (de) | 2005-12-08 |
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