EP0295592A2 - Lampe électrique - Google Patents

Lampe électrique Download PDF

Info

Publication number
EP0295592A2
EP0295592A2 EP88109328A EP88109328A EP0295592A2 EP 0295592 A2 EP0295592 A2 EP 0295592A2 EP 88109328 A EP88109328 A EP 88109328A EP 88109328 A EP88109328 A EP 88109328A EP 0295592 A2 EP0295592 A2 EP 0295592A2
Authority
EP
European Patent Office
Prior art keywords
electric lamp
bulb
filament
lamp according
following
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.)
Withdrawn
Application number
EP88109328A
Other languages
German (de)
English (en)
Other versions
EP0295592A3 (fr
Inventor
Knut Otto Sassmannshausen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0295592A2 publication Critical patent/EP0295592A2/fr
Publication of EP0295592A3 publication Critical patent/EP0295592A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/50—Selection of substances for gas fillings; Specified pressure thereof

Definitions

  • the invention relates to an electric lamp, in particular an electric lamp with high luminous efficacy.
  • the object of the invention is to achieve a high light output under rational manufacturing conditions. Another object of the invention is to keep the blackening of the bulb wall of the electric lamp as low as possible.
  • the electric lamp since the electric lamp is strongly heated by the previous melting process, the electric lamp must be cooled slowly in the cooling positions provided for the machines before it can withstand freezing with liquid nitrogen without forming stress cracks.
  • Suitable manufacturing machines therefore require a much larger number of positions and are therefore more complex. It is often the case that good results can only be achieved with quartz or tempered glass technology.
  • the invention now takes a different approach in order to be able to achieve high light outputs in lumens per watt with significantly lower manufacturing costs.
  • An essential feature of the invention is to be able to use soft glasses such as lead glasses or soda lime glasses for the production of such incandescent lamps.
  • Figure 1 shows an el. Lamp partially cut according to the invention.
  • the piston (12) which according to the invention should consist of soft glass, for example lead glass or soda lime glass. You can also see a filament (10) and the power supply wires (20) and (22), which are held together by an insulating bead (24).
  • the luminous element (10) is attached to the end regions (26) and (28) of the power supply wires (20) and (22).
  • the el. Lamp shown has a screw base (30).
  • the electrical lamp has been filled with an inert gas, preferably xenon or krypton, at a pressure which still allows this lamp to be produced normally, that is to say a pressure at which the inert gas freezes out or special measures are taken when the bulb (12) melts are not necessary.
  • an inert gas preferably xenon or krypton
  • the power of the electrical lamp according to the invention is more than 4 watts per milliliter of bulb content, preferably more than 5 watts per milliliter of bulb content. This would result in severe blackening. How this is avoided is specified in claim 12.
  • Figure 2 shows an electric lamp according to the invention with 2 bulb chambers (16 and 18) partially cut. Since the sizes of electrical lamps and their electrical power are often prescribed, it is often difficult to implement the inventive concept for some lamps, since either the volume of the bulb is too large in size or the available electrical power is too small. Therefore, according to the invention, the piston (12) was narrowed at (14) in order to depress the volume of the piston (12). As can be seen in FIG. 2, such a bulb can then still fit into the base (30), which may be prescribed, and the prescribed distance of the luminous element (10) from the base can also be maintained. Nevertheless, according to the invention, the piston content is significantly smaller due to the narrowing.
  • the overheated gases that surround the filament (10) begin to rotate in the bulb chamber (16), with relatively little of the cooler gas being drawn into the bulb chamber (16) from the bulb chamber (18) and also little overheated gas from the bulb chamber (16) is released into the cooler piston chamber (18).
  • the getter is usually attached either to the luminous element (10) or else to the end region (26, 28) of the power supply wires (20, 22).
  • the getter is consumed within a relatively short span of the life of the electrical lamp, whereas harmful residual gases can escape from the wall of the bulb in such highly heated electrical lamps until the end of the life.
  • the getter effect of the getter is maintained throughout the life of the el.lamp when the getter is deposited in the cooler bulb chamber (18).
  • the surface of the insulating bead (24) has preferably been found suitable for this.
  • the getter effect is released from the cooler piston chamber (18) much more slowly and economically than if, as shown in FIG. 1, a continuous piston is used.
  • the luminous efficacy increases significantly if the electrical output per milliliter of the bulb chamber (16) rises to over 10 watts. 15 watts or preferably even 20 watts per milliliter of piston content of the piston chamber (18) should advantageously be achieved.
  • xenon or krypton is advantageously used as the inert filling gas.
  • the purer these gases are, the higher light yields have been achieved.
  • FIG. 3 shows an electric lamp according to the invention, partly in section.
  • the piston 12 is provided on its side with a particularly strong wall.
  • the luminous element (10) is arranged in the vicinity of this thick wall (32).
  • the inert gas in the bulb (12) is better thermally insulated in the area of the luminous element (10), as a result of which higher light yields are made possible.
  • I refer to patent applications P 3719 761.4 and P 38 08 702.2, the priority of which I claim. This also improves the blackening behavior of the lamp.
  • FIG. 4 shows the electric lamp according to the invention with which the greatest light yields are achieved.
  • the bulb has two chambers (16 and 18), the bulb chamber (16) surrounding the luminous element (10) being additionally thermally insulated by the thick wall at the front of the bulb.
  • the volume of the bulb chambers (16 and 18) should be defined in such a way that a theoretical plane, which is perpendicular to the axis of the light bulb through the narrowest point (14) of the bulb (12), serves as a separation plane for the volume between the two bulb chambers ( 16 and 18) functions for the calculation of the volume.
  • the getter In order to ensure a long-term effect of the getter, the getter should be deposited in the cooler bulb chamber (18) according to the invention, and a minimum distance of 3.5 mm from the coiled part of the luminous element (10) should advantageously be observed.
  • the getter should preferably be deposited on the insulating bead (24).
  • the getter should advantageously be deposited on the side of the insulating bead (24) facing away from the luminous element (10).
  • FIG. 5 shows an electric lamp (8) which has a bulb (48).
  • this piston (48) has piston walls (42) and (46) with different wall thicknesses.
  • the luminous element (10) is arranged near an area of great wall thickness (42).
  • the wall (42) should be at least 2.0 mm thick in the region of the axis (45).
  • the distance (C) of the filament (10) to the inner surface of the side wall (46) of the bulb (48) should be greater than the distance (A), that is the distance of the filament (10) from the inner surface of the wall (42) of the bulb end (44) in the area of the axis (45) of the incandescent lamp, and according to the invention the wall thickness (D) of the side wall (46) is at most 50 percent of the wall thickness (B) of the bulb end (44).
  • the bulb (48) of the incandescent lamp (8) designed in this way should be filled with a cold filling pressure of more than 0.3 bar of an inert gas such as neon, argon, krypton or xenon, advantageously more than 0.5 bar, preferably more than 0 , 7 bar. Nitrogen can also be added as the fill gas.
  • an inert gas such as neon, argon, krypton or xenon
  • the temperature of the luminous element (10) in the activated (ie burning) state should be over 2,600 degrees Kelvin, advantageously over 2,800 degrees, preferably over 3,000 degrees.
  • This inventive design of an incandescent lamp is based on the following ideas according to the invention.
  • the filament Since the surface of an incandescent bulb is relatively large in relation to the surface of a heat-emitting filament, the filament must use a certain minimum amount of energy in order to keep the bulb wall at the temperature necessary for a cyclic process. In practice, this minimum limit is currently around 2 watts of energy consumption.
  • the invention is based on the experiment whether it might not be sufficient if only a small part of the piston wall reaches higher temperatures, whereas the majority of the piston wall remains at a lower temperature level.
  • the luminous element is brought so close to the bulb wall that it heats up very strongly in a very small area, or better expressed, a gas filling with an inert gas conducting a large part of the heat. It turned out that the piston wall can be damaged with such strong heating.
  • the wall thickness of the piston in the strongly heated area of the piston was increased.
  • the inert filling gas which largely takes over the heat transport from the filament to the bulb wall, which is particularly strongly heated at certain points.
  • this effect improves if the pressure of the filling gas is advantageously increased.
  • the present patent application speaks of the cold filling pressure, which means the filling pressure which prevails in the bulb opposite an evacuated vessel when the luminous element is not activated.
  • Krypton has proven to be a fill gas that does its job very well within the scope of this invention. The higher the proportion of this not very cheap filling gas, the better the results achieved.
  • the krypton content in the filling gas should be at least 70 percent, advantageously at least 90 percent. Even better results are achieved with the even more expensive xenon as the filling gas.
  • the wall thickness (B) of the piston end (44) in its region in the vicinity of the axis (45) is at least 2.70 mm, if at the same time the wall thickness (D) of the side wall (46) of the piston (48) is less than 1.0 mm.
  • the wall thickness (42) can advantageously decrease with increasing distance from the axis (45) in order to make a blatant transition from the thick wall thickness (42) to the to avoid small wall thickness (D) of the side wall (46).
  • the wall thickness (D) of the side wall (46) of the bulb (48) in the regions adjacent to the luminous element is less than 0.6 mm.
  • a temperature difference of at least 100 degrees Kelvin should exist between the inner surface of the wall thickness (42) of the bulb (48) in the region of the axis (45) and the inner surface of the side wall (46) when the luminous element (10) is activated (ie burning) .
  • the higher temperature is naturally in the region of the axis (45) since, for this purpose, the luminous element (10) has been brought very close to the bulb end (44) for this purpose.
  • the temperature difference is advantageously 200 degrees, preferably 300 degrees.
  • the results obtained are also improved if the distance (A) of the luminous element (10) to the inner surface of the wall (42) is reduced to less than 2.0 mm. Any further reduction appears to result in a further improvement in results.
  • the turns from turn to turn should not be greater than 2.0 filament diameters.
  • the luminous element (10) is advantageously bent such that its tip or front curvature points in the direction of the bulb end (44).
  • normally used glasses can be used in the production of incandescent lamps, such as lead glass or soda-lime glass (international name soda-limeglass ). This results in a significant reduction in production costs compared to hard glass or quartz glass.
  • the piston (48) with its thickened wall part (42) is advantageously made from a glass with a softening temperature of less than 1,000 degrees Celsius.
  • the softening temperature is defined as the temperature at which a large number of pistons lying one above the other begin to adhere to one another.
  • FIG. 5 also shows the power supply wires (20 and 22) and the insulating bead (24) holding these power supply wires (20 and 22) together.
  • a getter material is to be applied to these power supply wires (20, 22).
  • P3 N5 should preferably be used for this purpose. According to the invention, it is advantageous if no phosphorus-containing getters are applied to the luminous element (10), since otherwise there is a risk that the translucency of the inner surface of the wall (42) will be reduced by such gettering due to the proximity of the luminous element (10).
  • the power supply wires (20, 22) have a diameter of less than 0.5 mm and that when the luminous element (10) is activated, a current flow of over 0.3 amperes flows through these power supply wires (20, 22).
  • the power supply wires (20, 22) should preferably have a diameter of less than 0.35 mm.
  • the filament (36) from which the filament (10) was wound should have a diameter of at least 10 percent of the diameter of the power supply wires (20, 22) in order to reduce the getter effect on the power supply wires (20, 22) or the insulating bead (24 ) applied getters.
  • the filament preferably has a diameter of at least 15 percent of the diameter of the power supply wires (20, 22).
  • FIG. 6 shows a curved luminous element (10) (in an enlarged representation), the tip (38) of which, according to the invention, should point in the direction of the large wall thickness (42) of the bulb (48).
  • the filament (10) has been wound from the filament (36).
  • the distances between the individual turns on the outside of the curvature are of course larger than on the inside.
  • the mean must be calculated from both distances in order to determine the distance relations listed here.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
EP19880109328 1987-06-13 1988-06-11 Lampe électrique Withdrawn EP0295592A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3719761 1987-06-13
DE3719761 1987-06-13
DE3808702 1988-03-16
DE3808702 1988-03-16

Publications (2)

Publication Number Publication Date
EP0295592A2 true EP0295592A2 (fr) 1988-12-21
EP0295592A3 EP0295592A3 (fr) 1991-01-02

Family

ID=25856613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880109328 Withdrawn EP0295592A3 (fr) 1987-06-13 1988-06-11 Lampe électrique

Country Status (1)

Country Link
EP (1) EP0295592A3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017764A1 (fr) * 1993-12-22 1995-06-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe halogene a incandescence
EP1975975A1 (fr) 2007-03-30 2008-10-01 Patent-Treuhand-Gesellschaft Für Elektrische Glühlampen mbH Unité de construction pour une lampe électrique dotée de pistons extérieurs
DE102007015483A1 (de) 2007-03-30 2008-10-02 Osram Gesellschaft mit beschränkter Haftung Baueinheit für eine elektrische Lampe mit Außenkolben
DE102007015481A1 (de) 2007-03-30 2008-10-02 Osram Gesellschaft mit beschränkter Haftung Baueinheit für eine elektrische Lampe mit Außenkolben

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2271108A (en) * 1940-01-17 1942-01-27 Kenneth L Wade Incandescent lamp
FR1260887A (fr) * 1959-06-02 1961-05-12 Ampoule électrique à incandescence, notamment petite ampoule électrique et lampe à réflecteur, notamment réflecteur de forme parabolique
US3784275A (en) * 1971-04-29 1974-01-08 Philips Corp Method of manufacturing an incandescent lamp
JPS52120587A (en) * 1976-04-01 1977-10-11 Toshiba Corp Bulb lamp
US4463277A (en) * 1980-08-11 1984-07-31 North American Philips Lighting Corporation Compact halogen-cycle incandescent lamp, and lamp unit utilizing such lamp as a light source
EP0140330A2 (fr) * 1983-10-31 1985-05-08 Kabushiki Kaisha Toshiba Lampe miniature à incandescence
DE8708356U1 (de) * 1987-06-13 1987-08-27 Norda, Marie Luise, 2991 Dersum Glühlampe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2271108A (en) * 1940-01-17 1942-01-27 Kenneth L Wade Incandescent lamp
FR1260887A (fr) * 1959-06-02 1961-05-12 Ampoule électrique à incandescence, notamment petite ampoule électrique et lampe à réflecteur, notamment réflecteur de forme parabolique
US3784275A (en) * 1971-04-29 1974-01-08 Philips Corp Method of manufacturing an incandescent lamp
JPS52120587A (en) * 1976-04-01 1977-10-11 Toshiba Corp Bulb lamp
US4463277A (en) * 1980-08-11 1984-07-31 North American Philips Lighting Corporation Compact halogen-cycle incandescent lamp, and lamp unit utilizing such lamp as a light source
EP0140330A2 (fr) * 1983-10-31 1985-05-08 Kabushiki Kaisha Toshiba Lampe miniature à incandescence
DE8708356U1 (de) * 1987-06-13 1987-08-27 Norda, Marie Luise, 2991 Dersum Glühlampe

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ELEKTROTECHNISCHE ZEITSCHRIFT, AUSGABE B. vol. 28, no. 4, Februar 1976, BERLIN DE Seiten 86 - 87; KLOPFER: "VERBESSERUNGSMOGLICHKEITEN VON GLUHLAMPEN" *
PATENT ABSTRACTS OF JAPAN vol. 2, no. 9 (M-77)(6598) 23 Januar 1978, & JP-A-52 120587 (TOKYO SHIBAURA DENKI K K) 10 November 1977, *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017764A1 (fr) * 1993-12-22 1995-06-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe halogene a incandescence
US5896007A (en) * 1993-12-22 1999-04-20 Patent Treuhand Gesellschaft Fur Elektrische Gluehlampen Mbh Halogen incandescent lamp with heat transfer by conduction
DE4343989C2 (de) * 1993-12-22 2002-12-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogenglühlampe
EP1975975A1 (fr) 2007-03-30 2008-10-01 Patent-Treuhand-Gesellschaft Für Elektrische Glühlampen mbH Unité de construction pour une lampe électrique dotée de pistons extérieurs
DE102007015483A1 (de) 2007-03-30 2008-10-02 Osram Gesellschaft mit beschränkter Haftung Baueinheit für eine elektrische Lampe mit Außenkolben
DE102007015481A1 (de) 2007-03-30 2008-10-02 Osram Gesellschaft mit beschränkter Haftung Baueinheit für eine elektrische Lampe mit Außenkolben
US7977854B2 (en) 2007-03-30 2011-07-12 Osram Gesellschaft Mit Beschraenkter Haftung Component for an electric lamp with outer bulb

Also Published As

Publication number Publication date
EP0295592A3 (fr) 1991-01-02

Similar Documents

Publication Publication Date Title
EP0061758B1 (fr) Lampe à vapeur de mercure à basse pression et méthode de fabrication
DE2212536C2 (de) Verfahren zur Herstellung von Leuchtstofflampen
EP0446460B1 (fr) Lampe à incandescence à halogène munie d'un pincement unique
DE10163584C1 (de) Verfahren und Vorrichtung zur Herstellung von Lampenkolben mit nicht-rotationssymmetrischer und/oder konkaver innerer und/oder äußerer Form
DE3005052A1 (de) Elektrische entladungslampen
DE1988671U (de) Elektrische gluehlampe.
EP0295592A2 (fr) Lampe électrique
DE2732060C2 (de) Elektrische Leuchtstofflampe
DE10033662B4 (de) Lichtbogenröhre für eine Entladungslampe und Verfahren zu deren Herstellung
DE19623499A1 (de) Verfahren zur Herstellung einer Halogenglühlampe
DE10128273A1 (de) Entladungslampe und Verfahren zu deren Herstellung
DE69110097T2 (de) Elektrische Glühlampe.
EP0076503B1 (fr) Lampe à décharge à basse pression à un seul culot et méthode de fabrication
DE69011145T2 (de) Einseitig gequetschte Metalldampfentladungslampe.
DE69303949T2 (de) Elektrische Infrarot-Glühlampe und Verfahren zur Herstellung derselben
EP0219860B1 (fr) Méthode de fabrication d'une lampe à décharge à haute pression à halogénures de métal à pincement unique et une lampe fabriquée suivant cette méthode
DE102008054287A1 (de) Halogenglühlampe für den Betrieb an Netzspannung
DE3819895A1 (de) Elektrische lampe
DD240283A5 (de) Niederleistung-niederdruckgasentladungslampe mit quecksilberfuellung in kompakter ausfuehrung und verfahren zu deren herstellung
EP0374676B1 (fr) Procédé de préparation d'une lampe à décharge à haute pression à deux culots
DE2420342A1 (de) Halogengluehlampe und verfahren zur herstellung
DE8708356U1 (de) Glühlampe
DE19647827B4 (de) Verfahren zur Herstellung einer Leuchtstofflampe
DE9102566U1 (de) Halogenglühlampe
DE102005035779A1 (de) Elektrische Lampe mit Aussenkolben

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900703