EP2081215A1 - Capsule d'alignement de filament pour lampe électrique - Google Patents

Capsule d'alignement de filament pour lampe électrique Download PDF

Info

Publication number: EP2081215A1
Authority: EP; European Patent Office
Prior art keywords: filament; hollow tubes; longitudinal axes; central longitudinal; capsule
Prior art date: 2008-01-17
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

Application number

EP08100597A

Other languages

German (de)

English (en)

Other versions

EP2081215B1 (fr

Inventor

Gunther Van De Poel

Subba Rao Mekala

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.)

Flowil International Lighting Holding BV

Original Assignee

Flowil International Lighting Holding BV

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.)

2008-01-17

Filing date

2008-01-17

Publication date

2009-07-22

2008-01-17 Application filed by Flowil International Lighting Holding BV filed Critical Flowil International Lighting Holding BV

2008-01-17 Priority to EP08100597A priority Critical patent/EP2081215B1/fr

2008-01-17 Priority to AT08100597T priority patent/ATE537552T1/de

2009-07-22 Publication of EP2081215A1 publication Critical patent/EP2081215A1/fr

2011-12-14 Application granted granted Critical

2011-12-14 Publication of EP2081215B1 publication Critical patent/EP2081215B1/fr

Status Not-in-force legal-status Critical Current

2028-01-17 Anticipated expiration legal-status Critical

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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
- H01K1/28—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

Definitions

the electric light bulb or electric lamp Since its invention, the electric light bulb or electric lamp, has become such a common item of household electrical equipment, that the provision of light is an accepted normality.
the simple electric lamp has taken on many different forms, from a white hot filament producing both heat and light, through to fluorescent tubes and discharge lamps. Of each of these lamps, however, the simple white hot filament lamp remains extremely popular in household use. This is, primarily, because the lamp is very simple to fabricate, is very reliable, it does not require any external electrical control gear, and as such is universally cheap and available to all.
infra-red radiation In order to improve the efficiency of incandescent filament lamps, several designs have attempted to take advantage of the infra-red radiation being given off by the filaments. Using the infra-red radiation, in conjunction with a special coating to the outside of the electric lamp, the infra-red radiation can be reflected back towards the filament. Clearly, however, it is necessary to provide the lamp of such a design that the reflected infra-red radiation returns to, and is focused on, the incandescent filament. By re-focusing the infra-red radiation on the filament, the temperature of the filament will be increased, and therefore less current is required to pass through the lamp to generate the same amount of light. Unfortunately, while certain examples of these lamps do exist, there are significant technical difficulties for providing such in the useful household voltage and wattage requirements.
an object of the present invention to provide a design for an electric lamp which can be used with an infra-red reflecting coating.
this lamp should be useable at the household voltage levels, i.e. above 200 volts, and with low to medium wattage levels i.e. less than or equal to 200 watts.
the lamp should be of such a design that the incandescent coil is provided at a position within the lamp such that the infra-red radiation reflected from the coating efficiently interacts with the coil, thereby improving the overall energy efficiency of the bulb or lamp.
the filament at the focus point of the reflected infra-red radiation from the coating.
WO 2004/084258 attempts to address the above problem, by providing an electric lamp which has an infra-red reflecting layer provided on the surface.
the lamp of this design is provided with an elliptical cross section.
Two incandescent coils therefore, lie along the two foci of the ellipse, such that the infra-red radiation from the coils will be reflected back onto the coil.
Significant manufacturing problems result from this design, however, as the positioning of the coil within a large elliptical lamp is technologically difficult. Additional problems exist with this lamp, in that the lamp will be provided by an elliptical cross section quartz tube. Producing elliptical cross section quartz tubes is also technologically challenging, therefore increasing the difficulties of fabricating such a lamp.
EP 1 739 725 discusses a design for overcoming the above mentioned problems, in which the part of the housing of the bulb holding the incandescent coil, is shaped as two joined cylinders. These two joined cylinders do so in an overlapping manner, such that a figure of "8" cross-section design is obtained.
the light generating coils are located along the central axis of each of the cylinders making up the figure of 8, thus aligning them at an equidistant point from the outer infra-red coated surface.
the filament alignment capsule according to claim 1 being utilised within an electric lamp.
This filament alignment capsule is structured such that it provides a separate unit which is prefabricated, preferably from quartz, and is utilised to house a filament used in the electric lamp.
This filament alignment capsule is sized and shaped so that incorporation of the filament will lead to the filament being accurately positioned within the filament alignment capsule, such that integration of this filament alignment capsule and filament within an electric lamp will lead to an improvement in the efficiency of the electric lamp in general.
the filament alignment capsule comprises a structure of two hollow elements, preferably tube-like elements, which are joined together by means of a joining element.
This joining element is structured such that the hollow tubes are maintained with a known orientation with respect to each other.
Each hollow tube is possessed of rotational symmetry around a longitudinal central axes of the tube.
the tubes are, in fact, circular in cross-section.
the tubes may have a constant diameter along their longitudinal direction, such that the tubes can be considered as hollow cylindrical elements. It is also possible, and sometimes advantageous, to provide the tubes with a varying diameter along this longitudinal direction.
the hollow tubes are aligned such that the longitudinal central axes are parallel with each other.
the joining element is provided with guidance means which are intended to interact with a filament when incorporated within the filament alignment capsule.
These guidance means are positioned on the joining element, joining block or joining piece, at a position which coincides with the longitudinal central axes of the hollow tubes.
the distance from the filament to the hollow tube can be accurately determined and precisely controlled. If the hollow tube is possessed of a constant diameter along its longitudinal direction, the distance between the hollow tube and the filament will be a constant along its length. Should, by contrast, a design of the hollow tube be chosen where the diameter varies, obviously the distance is also varied along the longitudinal direction. Clearly, the exact positioning of the filament along the longitudinal central axes means that the distance from the filament to the hollow tube is well known.
the hollow tubes of the filament alignment capsule have a diameter which is larger in the central part of the hollow tube. This leads to the hollow tubes having a slightly bowed outer surface, as the diameter at the ends of the tube are smaller than that at the centre. As such, the distance between a filament aligned appropriately along the central longitudinal axes of each of the tubes and the tube itself, will increase towards the centre of the tube. In particular, when a filament is incorporated within the filament alignment capsule and is being used, a greater concentration of heat is seen in the centre of the hollow tube, so it is sometimes preferable to increase the tubes' diameter at this point.
the hollow tubes can be coated with a material which has properties of reflecting any, or most, of the infrared radiation which strikes it. Further, this material should be such that visible wavelengths are not affected by the material and these pass through.
the hollow tubes of the filament alignment capsule By coating, preferably on the outside, the hollow tubes of the filament alignment capsule with such an infrared reflective coating, the heat generated by the filament can be reflected back onto the filament itself. It is advantageous that the reflected infrared radiation from the filament bouncing back from the infrared reflective coating should be approximately equal along the length of the filament. In some circumstances this is achieved by the hollow tubes having the constant diameter along their length, such that the distance is constant between the filament and the infrared reflective coating.
the distance between the filaments and the infrared reflective coating is slightly greater towards the centre of the filament.
a greater temperature is seen, and it is of some advantage to reduce slightly the amount of reflected infrared radiation which strikes the filament at this point.
provision of the hollow tubes with a slightly larger diameter on their longitudinal centre is desirable.
the two hollow tubes are arranged such that they contact each other along at least a part of the external surface thereof. Further preferably, it is possible that at this touching point the two tubes are connected together, and not just by means of the joining element.
the guidance means is that of a groove running on the upper surface of the joining element.
the upper surface is the surface which does not contact the hollow tubes.
This groove runs from the position on one side of the joining element which coincides with the longitudinal central axes of a first hollow tube, through to a similar position on the other side of the joining element.
a filament which will be introduced when the filament alignment capsule is used in a lamp, will be led from one longitudinal central axes of one hollow tube to the other longitudinal central axes of the other tube.
a groove is provided in the joining element, it is possible for this to have a variety of cross-sectional shapes. Of these: semicircular, V-shaped or concave can be utilised.
the guidance means be provided by a groove in the joining element.
the joining element could be structured such that two holes are provided which pass through the joining element, and these two holes coincide with the central longitudinal axes of each of the hollow tubes.
Further designs could be simply notches in the side of the joining element again, positioned such that when a filament is provided within the filament alignment capsule, it is advantageously positioned along the centre axes of each of the hollow tubes.
the guidance means exists, wherein any such means are suitable as long they are positioned and structured so as to fix the location of the filament along the central axes of each of the hollow tubes.
An electric lamp can be provided with the filament alignment capsule as described above, wherein this lamp is provided with an external casing for surrounding the filament alignment capsule and a filament.
this lamp is provided with an external casing for surrounding the filament alignment capsule and a filament.
the filament be provided within the filament alignment means, such that it lies along the longitudinal central axes of each of the two hollow tubes.
an advantageous filament for use in the electric lamp would be provided with two active regions, wherein only at the active regions will light and heat be given off. These two active regions will be positioned so as to lie along the central longitudinal axes of each of the hollow tubes in the filament alignment capsule. Electrically connecting these two active regions together is an intermediate section, and this is not of a structure to give off light and heat. This intermediate section will preferably be positioned to interact with the guidance means and the joining element so as to ensure the filament lies appropriately in the filament alignment capsule.
the two free ends of the filament are preferably maintained in an appropriate position by means of the external casing of the lamp.
the filament is positioned within the alignment capsule as discussed above, and when the filament lies along the central longitudinal axes of each of the two hollow tubes, the free ends can be held along these axes lines by means of the external casing.
This external casing is preferably provided with electrical contacts for contacting each end of the filament, and further preferably these contacts are electrically connected with electrodes at the outer side of the electric lamp.
the electric lamp may be provided with a gas-tight seal, which is preferably formed by pinch-sealing the end of the external casing.
filament alignment capsule is held within the external casing.
This dimpling is achieved by pushing dimples inward from the external casing, to contact the filament alignment capsule which will then hold this capsule within the electric lamp.
a further advantage of providing the filament alignment capsule out of quartz, is that a glass-to-glass connection will be made, which is very stable and reliable.
a method for production of the filament alignment capsule is advantageously along the following lines: providing two of the hollow tubes as disclosed above and aligning their central longitudinal axes, followed by joining these together by means of the joining element. At this point, the filament alignment capsule is ready to be utilised within an electric lamp. It is further preferable at this stage to coat the filament alignment capsule with an infrared reflective coating as described above.
the filament alignment capsule has been fabricated, it is possible to then incorporate this into an electric lamp, by housing the filament alignment capsule in an external casing, after incorporating a filament within the capsule.
the alignment of the filament along the longitudinal central axes is performed, and the external casing is pinched, to form a pinch-seal holding the filament in the desired position.
the external casing can be filled with an inert gas and this can be tipped so as to seal the external casing and create the lamp bulb.
FIG 1 shows a perspective cut-away view of an electric lamp 30 according to the present invention.
Figure 2 shows a cross-section through the electric lamp 30, and
Figure 3 shows a side-on view of the electric lamp 30 wherein internal features of the electric lamp 30 are shown with dashed line.
the electric lamp 30 is provided with an external casing 31 which defines the central electric lamp bulb 36 in which are contained the filament 50 and a filament alignment capsule 10 for positioning the filament 50.
the filament alignment capsule 10 shown in the figures gives one possible embodiment of the filament alignment capsule 10, but is not intended to limit this design.
Electric lamps 30 which take advantage of an infrared radiation coating 40, such that infrared radiation is reflected back from the coating 40 and optical wavelengths are substantially allowed to pass through the coating 40 unaffected, require specific placement of the filament 50 with relation to this coating 40.
the effectiveness of an electric lamp 30 comprising this infrared coating 40 is very strongly dependent upon the relative positioning between the infrared coating 40 and the filament 50. If the distance between the filament 50 and the coating 40 varies even slightly, the efficiency of the electric lamp 30 can be significantly reduced. As such, it is desirable to strictly control the placement of the filament 50 in relation to the coating 40.
the filament alignment capsule 10 as shown in Figures 1 and 2 , and as shown more clearly in Figure 4 which details just this filament alignment capsule 10, is designed so as to improve the accuracy with which the filament 50 is positioned with respect to the coating 40.
the filament alignment capsule 10 primarily comprises two hollow tubes 11a and 11b, which are aligned such that their central longitudinal axes 12a and 12b lie parallel with each other.
the two hollow tubes 11a, 11b shown in Figure 4 are represented as two hollow cylindrical tubes, wherein the cross-section is circular and the diameter of the tube remains constant along its length. This is by way of example only, and indeed it is desirable in some circumstances for the hollow tubes 11a, 11b to have a diameter which varies along each of the central longitudinal axes 12a, 12b.
each hollow tube 11a, 11b should be rotationally symmetrical around its central longitudinal axes 12a, 12b, wherein the diameter of the tube can be the same along its length.
the diameter of the hollow tube 11a, 11b can vary from a minimum at each end, up to a maximum in the centre of the hollow tube 11a, 11b as measured along the central longitudinal axes 12a, 12b. This would give the longitudinal profile of the hollow tube 11a, 11b as being slightly elliptical, or wider in the centre than at the ends.
a joining element 20 is located at one end of the two hollow tubes 11a, 11b.
the structure shown in Figure 4 is merely one of a myriad of possibilities, and indeed the joining element 20 as shown in Figures 1 to 3 is clearly of a different structure.
the joining element 20 be used to fix together the two hollow tubes 11a, 11b, but, as will be seen below, it is advantageously used to align the filament 50 within the two hollow tubes 11a, 11b.
the filament 50 interacts with this joining element 20 which positions the filament 50 along the central longitudinal axes of the hollow tubes 11a, 11b.
the joining element 20 is structured such that guidance means 28 are provided on the joining element 20 at a point which lies on the central longitudinal axes 12a, 12b of each hollow tube 11a, 11b.
the guidance means 28 are provided by each end of a groove 23 seen in the top surface 24 of the joining element 20.
the top or upper surface 24 is defined as the surface which is not in contact with the two hollow tubes 11a, 11b.
the guidance means 28 provided on the joining element 20 are positioned on the central longitudinal axes 12a, 12b of each of the hollow tubes 11a, 11b, such that when the filament alignment capsule 10 is used in an electric lamp 30, and integrated with a filament 50, the filament 50 is guided such that it lies along the central longitudinal axes of each of the two hollow tubes 11a, 11b.
the guidance means 28 provided on joining element 20, can be provided by any structure which guides the filament 50 to lie along the central longitudinal axes 12a, 12b of the hollow tubes 11a, 11b.
a groove 23 the first and second ends 26, 27 of which, are positioned directly in line with the central longitudinal axes 12a, 12b of each of the hollow tubes 11a, 11b.
This is the key property of the joining element 20 and the guidance means 28.
the actual construction of these two pieces is not particularly limited, simply the joining element 20 is provided to join together the two hollow tubes 11a, 11b, and is provided with these guidance means 28 which align exactly with the central longitudinal axes 12a, 12b of each of the two hollow tubes 11a, 11b.
a filament alignment capsule structured in this manner can then be incorporated into an electric lamp 30, and will advantageously align the filament 50 when provided in the electric lamp 30 and filament alignment capsule 10 along the central longitudinal axes 12a, 12b of the hollow tubes 11a, 11b.
the surfaces of the two hollow tubes 11a and 11b are coated by means of the infrared reflecting coating 40.
the distance between the filament 50 and the coating 40 is immediately controlled by means of the filament alignment capsule 10. That is, when the filament 50 is positioned such that it runs through the first of the hollow tubes 11a interacts with the guidance means 28 lying on the central longitudinal axes 12a of the hollow tube 11a, runs over the joining element 20 to the second guidance means 28 which aligns the filament with the central longitudinal axes 12b of the second hollow tube 11b, the final portion of the filament 50 will lie along the central longitudinal axes 12b of the second hollow tube 11b.
the efficiency of the infrared coating 40 is, as has been disclosed above, strongly dependent upon controlling the distance between the filament 50 and the coating 40. By means of the filament alignment capsule 10, this distance can be accurately maintained, and the efficiency of an electric lamp 30 comprising the filament alignment capsule 10 is greatly improved.
the filament 50 being utilised in the electric lamp 30 of the present invention will not produce light from its full length.
the filament 50 which is advantageously used in the electric lamp 30 of the present invention is possessed of two active sections 51a and 51b, as shown in Figures 1 and 2 .
these two active sections 51a, 51b are the sections at which the light and the heat are generated from the filament 50 when in use. It is important for these active sections 51a, 51b to be located along the central longitudinal axes 12a, 12b of the two hollow tubes 11a, 11b.
the filament 50 as shown in Figures 1 and 2 is a specific filament 50 wherein two active sections 51a and 51b are provided along its length. In between these two active sections 51a, 51b is provided an intermediate section 52.
This intermediate section 52 is not formed with an incandescent structure; that is, when the filament 50 is in use, the intermediate section 52 does not generate significant quantities of heat. Indeed, the intermediate section 52 is primarily a low resistance electrical connection between the two active sections 51a, 51b of the filament 50.
a first 53 and second 54 end to the filament 50 are provided at the other ends of the active sections 51a, 51b.
the first 53 and second 54 end of the filament 50 are used as the electrical connections to the filament 50 when it is incorporated within a electric lamp 30.
each of the first 53 and second 54 ends of the filament 50 also have to be accurately positioned, such that the active sections 51a, 51b of the filament 50 lie along the central longitudinal axes 12a, 12b of each of the two hollow tubes 11a and 11b.
This alignment of the filament 50 is achieved by means of the external casing 31 of the electric lamp 30.
the filament 50 is integrated with the filament alignment capsule 10, such that the filament 50 is accurately positioned at the top of the hollow tubes 11a, 11b along the central longitudinal axes 12a, 12b.
This filament alignment capsule 10 incorporating the filament 50 is then positioned within the external casing 31 of the electric lamp 30.
the filament 50 can be held in the desired position.
This structure is best seen in Figures 1 and 2 .
the filament 50 is appropriately aligned in the filament alignment capsule 10 and then by means of the external casing 31 of the electric lamp 30, an electric lamp 30 with high efficiency is produced.
the filament 50 will be aligned appropriately in the filament alignment capsule 10 and then positioned into the external casing 31.
the external casing 31 will then be dimpled such that the filament alignment capsule 10 is secured within the external casing 31 by means of dimples 32.
dimples 32 can be seen in Figure 3 , and are advantageously provided as interacting and fixing the joining element 20 of the filament alignment capsule 10. Obviously, it is possible to fix the filament alignment capsule 10 within the electric lamp 30 by alternative means, however the technique of dimpling is well established and provides a simple and effective way of fixing the alignment capsule 10.
this casing is pinch-sealed, to provide a gas-tight seal 35 at the lower end thereof.
contacts 33 for electrically connecting to the first 53 and second 54 ends of the filament 50, as well electrodes 34 which electrically connect to the contacts 33.
the further requirements of this pinching stage of production is that the first 53 and second 54 ends of the filament 50 are accurately located such that the active sections 51a, 51b of the filament 50 lie along the central longitudinal axes 12a, 12b of each of the two hollow tubes 11a, 11b.
the hollow bulb section 36 of the electric lamp 30 is filled with an inert gas and halogen or a halogen compound, and the electric lamp is clipped off to fully seal this bulb 36 to form the electric lamp 30.
the key elements to the current invention are the filament alignment capsule 10 interacting with the external casing 31 of the electric lamp 30.
these two features interact such that a filament 50 positioned in the electric lamp 30 is located, and active sections 51a, 51b if such a filament 50 is used, so as to lie along the central longitudinal axes 12a, 12b of the two hollow tubes 11a, 11b making up the filament alignment capsule 10.
An electric lamp 30 fabricated in such a way will have a greatly improved efficiency, as the distance between the filament 50 and the infrared reflective coating 40 can be accurately assured, and therefore the effectiveness of this coating 40 is improved.
the two hollow tubes 11a, 11b When forming the filament alignment capsule 10, it is also possible for the two hollow tubes 11a, 11b to touch each other along a contact point 13a, 13b along the outside surfaces 14a, 14b of each of the two tubes 11a, 11b. Additionally, it is also possible for the two hollow tubes 11a, 11b to be joined together at this contact point 13a, 13b, as well as being joined together by means of the joining element 20. Obviously, joining together the two hollow tubes 11a, 11b further strengthens the structure of the filament alignment capsule 10.
the joining element can be comprised of guidance means 28 which are structured as a groove 23 in the upper surface.
the groove 23 in the upper surface 24 of the joining element 20 can have any profile, and is not limited to the semicircular profile as given in Figure 4 . Indeed, it is possible for the groove 23 to be a concave of V-shaped groove 23 in profile. If a groove 23 is provided in the joining element 20, the joining element 20 advantageously has a width which is the same distance as is present between the central longitudinal axes 12a, 12b of the two hollow tubes 11a, 11b. The first 26 and second 27 end of the groove 23 as shown in Figure 4 will then provide the guidance means 28 lying exactly on the central longitudinal axes 12a, 12b of each of the two hollow tubes 11a, 11b.
the joining element 20 as shown in Figure 4 has a generally rectangular profile. As can be seen from the joining element 20 in Figures 1 and 2 , other shapes of the joining element 20 are equally acceptable. Indeed, the joining element 20 in Figures 1 and 2 is of a hemispherical cylindrical design, wherein the flat lower bottom is used as the surface to join the two hollow tubes 11a, 11b, and the filament 50 runs along and over the top of the circular profiled section of the cylinder. Additionally, it is possible that the joining element 20 as shown in Figures 1 and 2 also possesses a groove 23, the first 26 and second 27 end of this groove 23 providing the guidance means 28 for aligning the filament 50.
the filament alignment capsule 10 is comprised of quartz material. That is, the two hollow tubes 11a, 11b as well as the joining element 20 all being fabricated from quartz.
the advantage of providing the filament alignment capsule from quartz is that quartz can be produced to good dimensional tolerances, and is particularly suited to the high temperature environment within the electric lamp 30.
the joining element 20 is provided by quartz, the external casing 31 when dimpled to attach to the joining element 20 (should this be the method of attachment) will form a glass to glass junction, which is extremely stable.
each of the hollow tubes 11a, 11b to be identical in both size and shape. This leads to a more controllable structure in the filament alignment capsule 10.
an electric lamp 30 is provided as a general teaching of the inventive concept.
the key element to the electric lamp 30 is that of the filament alignment capsule 10; also of a secondary importance is this capsule 10 interacting with the external casing 31, such that the filament 50 in the electric lamp 30 is extremely precisely located with relation to the infrared reflective coating 40. In such a way, the efficiency of the electric lamp 30 is greatly improved.
the discussion presented above is not intended to limit the scope of protection, and indeed many further designs for the filament alignment capsule 10 and the electric lamp 30 will be obvious to the skilled person, and the full scope of the invention is defined by means of the attached claims.

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Non-Portable Lighting Devices Or Systems Thereof (AREA)
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EP08100597A 2008-01-17 2008-01-17 Capsule d'alignement de filament pour lampe électrique Not-in-force EP2081215B1 (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
EP08100597A EP2081215B1 (fr)	2008-01-17	2008-01-17	Capsule d'alignement de filament pour lampe électrique
AT08100597T ATE537552T1 (de)	2008-01-17	2008-01-17	Filamentausrichtungskapsel für eine elektrische lampe

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP08100597A EP2081215B1 (fr)	2008-01-17	2008-01-17	Capsule d'alignement de filament pour lampe électrique

Publications (2)

Publication Number	Publication Date
EP2081215A1 true EP2081215A1 (fr)	2009-07-22
EP2081215B1 EP2081215B1 (fr)	2011-12-14

Family

ID=39719006

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP08100597A Not-in-force EP2081215B1 (fr)	2008-01-17	2008-01-17	Capsule d'alignement de filament pour lampe électrique

Country Status (2)

Country	Link
EP (1)	EP2081215B1 (fr)
AT (1)	ATE537552T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2306494A4 (fr) *	2008-07-23	2011-09-21	Lg Electronics Inc	Lampe halogene

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6400077B1 (en)	1999-05-18	2002-06-04	U.S. Philips Corporation	Electric incandescent lamp
DE10236549A1 (de)	2002-08-08	2004-03-04	Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH	Elektrische Glühlampe
WO2004084258A2 (fr)	2003-03-20	2004-09-30	Koninklijke Philips Electronics N.V.	Lampe incandescente electrique a couche de reflexion de l'infrarouge
EP1739725A2 (fr)	2005-04-25	2007-01-03	Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH	Lampe à incandescence à halogène et son procédé de fabrication
WO2007036493A2 (fr) *	2005-09-27	2007-04-05	Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH	Ampoule et procede de fabrication associe
DE202008000664U1 (de) *	2008-01-17	2008-06-19	Flowil International Lighting (Holding) B.V.	Glühfadenausfluchtungskapsel für eine elektrische Lampe

2008
- 2008-01-17 AT AT08100597T patent/ATE537552T1/de active
- 2008-01-17 EP EP08100597A patent/EP2081215B1/fr not_active Not-in-force

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6400077B1 (en)	1999-05-18	2002-06-04	U.S. Philips Corporation	Electric incandescent lamp
DE10236549A1 (de)	2002-08-08	2004-03-04	Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH	Elektrische Glühlampe
WO2004084258A2 (fr)	2003-03-20	2004-09-30	Koninklijke Philips Electronics N.V.	Lampe incandescente electrique a couche de reflexion de l'infrarouge
EP1739725A2 (fr)	2005-04-25	2007-01-03	Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH	Lampe à incandescence à halogène et son procédé de fabrication
WO2007036493A2 (fr) *	2005-09-27	2007-04-05	Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH	Ampoule et procede de fabrication associe
DE202008000664U1 (de) *	2008-01-17	2008-06-19	Flowil International Lighting (Holding) B.V.	Glühfadenausfluchtungskapsel für eine elektrische Lampe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2306494A4 (fr) *	2008-07-23	2011-09-21	Lg Electronics Inc	Lampe halogene
US8796910B2 (en)	2008-07-23	2014-08-05	Lg Electronics, Inc.	Halogen lamp comprising bulb and structure to prevent filament parts from contracting each other

Also Published As

Publication number	Publication date
ATE537552T1 (de)	2011-12-15
EP2081215B1 (fr)	2011-12-14

Publication	Publication Date	Title
EP0735569A2 (fr)	1996-10-02	Lampe fluorescente
JPH0367456A (ja)	1991-03-22	白熱ランプ用のフィラメント心合わせ支持体
CA1210437A (fr)	1986-08-26	Lampe electrique a reflecteur
EP2081215B1 (fr)	2011-12-14	Capsule d'alignement de filament pour lampe électrique
EP0364831B1 (fr)	1995-05-24	Lampe électrique à incandescence et méthode de fabrication de cette lampe
US6087775A (en)	2000-07-11	Exterior shroud lamp
JP2006508505A5 (fr)	2006-12-21
TW201314734A (zh)	2013-04-01	高效鹵素燈
JP2003501793A (ja)	2003-01-14	ランプ／リフレクタユニット
US6705748B2 (en)	2004-03-16	Lamp with ceramic light shield
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