EP1646071B1 - Système d'illumination avec une lampe à décharge à barrière diélectrique et générateur de fréquence associé - Google Patents

Système d'illumination avec une lampe à décharge à barrière diélectrique et générateur de fréquence associé Download PDF

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Publication number
EP1646071B1
EP1646071B1 EP05018818A EP05018818A EP1646071B1 EP 1646071 B1 EP1646071 B1 EP 1646071B1 EP 05018818 A EP05018818 A EP 05018818A EP 05018818 A EP05018818 A EP 05018818A EP 1646071 B1 EP1646071 B1 EP 1646071B1
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EP
European Patent Office
Prior art keywords
lamp
plug connection
ballast
discharge vessel
illumination system
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 - Fee Related
Application number
EP05018818A
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German (de)
English (en)
Other versions
EP1646071A1 (fr
Inventor
Georg Bschorer
Hans-Gerhard Bürzele
Reinhard Lecheler
Andreas Dr. Lochschmidt
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Publication of EP1646071A1 publication Critical patent/EP1646071A1/fr
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Publication of EP1646071B1 publication Critical patent/EP1646071B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • H01R33/0809—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp having contacts on one side only
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Definitions

  • the present invention relates to a dielectrically impeded discharge lamp together with a suitable electronic ballast for operating the lamp.
  • This sentence is referred to below as lighting system.
  • Dielectric barrier discharge lamps are understood to be discharge lamps in which at least the anodes or, in the case of bipolar operation, also all electrodes are separated by a dielectric layer from a discharge medium in the discharge vessel.
  • an electrical charge of the dielectric layer on the anode or the electrode acting as an anode in this phase an autonomous extinction of the discharge by an internal counterpolarization occurs.
  • the lamp operation is thus ultimately by a dense series of very short discharge flashes.
  • Dielectric barrier discharge lamps have been variously known in the art and, due to various advantageous technical characteristics, are of particular interest for the backlighting of display devices, such as computer monitors and television screens, or for office automation applications. In the latter case, elongated rod-shaped lamp shapes are generally used Illumination of documents in scanners, fax machines, copiers and the like can serve. Such discharge lamps with a tubular elongate discharge vessel are also already known and available. They may also be of interest for other applications, for example as UV emitters for certain technical processes. The present invention is not limited to a particular application.
  • Dielectrically impeded discharge lamps can not be operated with direct current due to the short outlined discharge mechanism, but are operated either with unipolar power supply pulses or with bipolar power supply pulses.
  • the frequencies used are usually in the order of some 10 kHz.
  • internal electrodes are performed in a gas-tight manner through an outer wall of the discharge vessel to the outside.
  • the electrodes whether external or implemented internal electrodes, usually contacted by soldering or so-called crimp connections.
  • the contact is made to cables that connect to a ballast for operating the discharge lamp.
  • the conventional dielectric barrier discharge lamps and associated ballasts are mounted independently of each other and hang together only via a connecting cable.
  • the invention is based on the technical problem of providing a lighting system which is advantageous with regard to the connection between the discharge lamp and the ballast from a dielectrically impeded discharge lamp with a tubular elongate discharge vessel and a suitable electronic ballast.
  • the invention is further intended to specify a corresponding method for connecting the discharge lamp to the ballast.
  • a lighting system with a dielectrically impeded discharge lamp in which a connector element is firmly connected to a housing of the ballast, which is designed so that the lamp with the contacts having the end as a complementary connector element by mating with the connector element of the Housing can be connected to the ballast.
  • the invention relates to a method for connecting the discharge lamp to the electronic ballast, in which the discharge lamp is plugged with a contact to an electrical terminal of the lamp having end plug-in element in a complementarily designed plug connector, which firmly with the housing of the ballast connected is.
  • the basic idea of the invention is, to a certain extent, to conceive of a dielectrically impeded discharge lamp with a tubular elongated discharge vessel as a plug connection element.
  • the discharge lamp at one end mounted contacts to the electrical connection and is connected at this end with a suitably designed complementary connector element, which is connected to the ballast, d. H. whose housing is firmly connected.
  • the ballast-side connector element may be connected via a cable to a circuit board of the ballast, but should be created by the connector, a direct mechanical connection between the lamp and ballast.
  • the ballast-side connector element not only fixed to the housing, but is integrated into the housing.
  • the connector element should not be a solid attachment. It should therefore be dispensed with a flexible cable between the ballast housing and the lamp in the sense of a flexible mechanical connection between them.
  • the plug connection element is integrally integrated in the ballast housing, that is, for example, as a recess in a remainder z.
  • the ballast-side connector element is preferably a socket, so a female element with respect to the tubular shape of the lamp.
  • the electrodes are rod-shaped and are formed at one end as a plug connection element.
  • the basic idea of this embodiment is to form the outer electrodes rod-shaped and to use at one end as a connector elements.
  • Rod-shaped means that the electrodes have their own Have dimensional stability and thus be used as a connector element, so are no foil electrodes.
  • the length and width of the electrodes should be comparable transversely to the longitudinal extent of the order of magnitude, for example not differing by more than a factor of 5 from one another.
  • the electrodes should be designed so that they are in a mechanically preferably detachable, d. H. can be separated again without fundamental destruction, form can be connected to a complementary connector element.
  • a plug-in connection is understood to mean a frictional connection of largely inherently stable elements taking place while retaining the essential shape of the plug connection elements.
  • the connector is to be demarcated from, for example crimp, in which foil-like electrodes are contacted in wesentiicher change in their shape and without taking advantage of dimensional stability.
  • the electrodes may be simple round rods and either have a pipe end as a so-called female element of the plug connection or terminate as a so-called male element as a round rod.
  • the trained for receiving a round rod pipe end as a female connector element can therefore be present both on the electrode side and ballast side.
  • the round cross-sectional shape is preferred.
  • the plug connection elements on the electrodes or the complementary plug connection elements are designed such that an element at least partially surrounds the complementary one.
  • the rod end is completely encompassed by the pipe end.
  • the flat end is only on two sides, that is only partially encompassed by the complementary element.
  • the role distribution between the electrode ends and the associated ballast side connector elements for the electrode ends with respect to the female and the male role can be arbitrary.
  • the electrode ends to be used as plug-in connection elements protrude beyond the discharge lamp, ie can be guided into corresponding receptacles when they are plugged in, in which the complementary plug connection elements for the electrodes are provided.
  • the ballast-side plug connection element for the lamp itself therefore does not have to have any projecting structures for contacting the electrodes, which is advantageous for reasons of protection against contact.
  • the frequencies used during operation of the discharge lamp are generally of the order of a few 10 kHz, so that such discharge lamps generate interference radiation in EMC-sensitive environments.
  • this problem is solved particularly advantageously by a conductive metallic shield, which partially surrounds the discharge vessel and thereby leaves open an opening angle for light emission, wherein at least one shielding area limiting screen of the shield is removed from the discharge vessel at its outermost end by a distance which is at least as large as half the average diameter of the discharge vessel transversely to the longitudinal extent.
  • Tubular discharge lamps of this type have a so-called aperture along their longitudinal extension, that is to say a longitudinal strip from which light emerges from the lamp.
  • this aperture should preferably not be covered directly by a shield, which is why known shields completely eliminate the aperture.
  • the lamp then radiates over the entire recessed area in the corresponding solid angle.
  • the screen surface provided by the invention limits the solid angle of this radiation and thus also defines an opening angle of the light emission.
  • This opening angle can be optimized for the technically desired application, d. H. in individual cases, the opening angle can also be significantly smaller than actually possible with a given aperture. In this case, however, the shielding surface would not affect the luminous efficacy at the relevant spatial angle for the application, but would significantly improve the shielding.
  • the shield is not limited to a known conductive sheath of the discharge vessel outside the opening angle, but rather that the shield has at least one shield surface which extends away from the discharge vessel and thereby limits the opening angle.
  • the shield should therefore, so to speak, have a "diaphragm" along at least one lateral boundary of the opening angle.
  • corresponding shielding surfaces are provided at both boundaries of the opening angle, but a shielding surface could also be dispensed with, for example if the shielding in the other direction is not essential or has already been given for other reasons, for example by a metallic wall which is present anyway is.
  • the shielding surface does not necessarily have to run along its entire extent along the boundary of the opening angle, that is, does not necessarily extend essentially radially.
  • at least its extreme end limits the opening angle.
  • this outermost end is removed from the discharge vessel by at least half the mean diameter of the discharge vessel.
  • the shield it is also not absolutely necessary for the shield to surround the entire remaining circumference of the discharge vessel apart from the opening angle. Again, by insignificance of EMI radiation in a particular direction or shielding elements provided there anyway, the reasons for a shield missing and / or other structural reasons may be given, which make a gap in the shield appear advantageous.
  • the shield surrounds the discharge vessel by more than half its circumference and shields and thus effectively forms a cuff.
  • This cuff can, as explained in more detail below, also have advantageous properties as an assembly aid or holder.
  • the cuff mentioned preferably has a portion of the circumference of the discharge vessel, more preferably the remainder of the screen area, a relatively small distance from the discharge vessel, in proportion to the mean half diameter of the discharge vessel.
  • the remaining part of the shield then forms the aforementioned screen surface.
  • the shielding surface according to the invention of the shield can limit the light emission of the lamp and thus define an effective opening angle at least to one side.
  • the extent of the aperture to the center of the discharge vessel in the cross section to the longitudinal direction and considers this as the opening angle, preferably the light emission opening angle of the shield at the same center point should be greater than that of the aperture.
  • the shielding surface can indeed dim the light emitted by the aperture because the light emission in the lamp also takes place from the aperture closer parts of the inner shell, so that the effective light emission angle of the aperture is greater than the radially considered opening angle.
  • the shield can also contain other shielding elements in the region of the opening angle in addition to the shielding surface (s), in particular planar shielding parts extending essentially radially in cross section, which further subdivide the opening angle.
  • the shield can also be slightly improved in the direction of the light emission. Examples are explained below.
  • an assumed radial thickness d D between the metallic sleeve and the outer electrode, ie about the thickness of the mentioned insulation layer within the metal shield, and a dielectric constant ⁇ D of this layer and a thickness d B of the dielectric barrier between the electrode and the discharge medium with a corresponding relative permittivity ⁇ B has the following overall relationship: d D / ⁇ D ⁇ F ⁇ d B / ⁇ B . wherein the factor F is at least 1.5, preferably at least 2 and more preferably at least 2.5.
  • the factor F is at least 1.5, preferably at least 2 and more preferably at least 2.5.
  • a simple and preferred possibility is to provide at least one, preferably two end base on the lamp, which are dimensioned radially slightly larger than the discharge vessel itself. Then when the shield applied in an adjacent manner to the base and preferably also mounted in this form and is held, is given by the radial difference between the base and discharge vessel of the desired distance.
  • a further preferred embodiment of the base relates to flats on its cross-sectional shape (perpendicular to the longitudinal extent of the discharge vessel), which are provided in a suitable manner to the shield, such as a correspondingly shaped metal sheet. Then, when the shield is mounted on the pedestals, the orientation of the flattenings allows a correct orientation, that is to say in particular an alignment of an aperture of the lamp, to the opening angle defined by the shield.
  • the base may also include other locking devices that match the shield. However, it can also alone by the cuff shape, d. H. be given by the positive connection of the shield itself, a locking or clamping action.
  • At least one outer electrode can be attached to the discharge vessel by positive engagement with a sleeve enclosing the electrode, which sleeve partially surrounds the circumference of the discharge vessel perpendicular to the longitudinal extension, but leaves open an aperture for light emission.
  • This embodiment also relates to a corresponding manufacturing method in which at least one electrode is attached to a tubular elongate discharge vessel by positive engagement with a sleeve embracing the electrode such that the electrode runs along the longitudinal extent of the discharge vessel is located; wherein the sleeve leaves an aperture for light emission.
  • the basic idea is to use a sleeve for mounting the at least one electrode or preferably the two or more external electrodes.
  • Cuff is here referred to a device that has its own sufficient dimensional stability to hold the electrodes by positive engagement.
  • the cuff should therefore be used as a kind of clamp or clamping device. This allows to release an aperture for light emission by the discharge lamp, so that the cuff does not have to be made particularly thin and not transparent.
  • the cuff must also not be glued on. It also allows stabilization and / or protection of the discharge vessel against external influences and can thus contribute to a desired weight reasons and to avoid high voltages desired reduction of the wall thicknesses of the discharge vessel.
  • the electrode can be mounted on the discharge vessel by simply clipping on or pushing in or into the sleeve, so that the production of the discharge lamp at this point is significantly simplified and accelerated.
  • the sleeve itself is held on the discharge vessel only by form-fitting or frictional connection as a result of its intrinsic stability, that is, it rests freely on itself. So you should also not be glued additionally.
  • the sleeve extends substantially along the entire discharge vessel. It can also be used in one case, one or a plurality of sleeves, which make up only part of the longitudinal extent of the discharge vessel.
  • the above explanation of the positive locking and the inherent dimensional stability of the sleeve is not to be understood as necessarily having to be in one piece. It is provided in the context of a particular embodiment of the invention, on the contrary, to use an at least two-part cuff. In this case, a functional differentiation may take place, for example in the form of an outer shielding plate according to the previous explanations and an electrical insulation lying therein between at least the electrode and the shielding plate. In such cases, the insulation itself may not necessarily be dimensionally stable, although it should be considered part of the cuff.
  • Another possibility for a two-part cuff consists in two along the longitudinal extent of the discharge vessel divided and in the assembled state adjoining and firmly connected parts that produce a positive or non-positive connection in the connected state relative to the discharge vessel. Such parts can therefore also be applied without form and force fit to the discharge vessel and then connected to produce the positive or non-positive connection.
  • Particularly suitable are clip connections between the two parts, preferably also non-detachable clip connections.
  • This embodiment is particularly suitable for sleeves, which consist of not substantially elastic material.
  • Preferred applications of the illumination system according to the invention are not only in office automation, but also in UV lamps. Such UV lamps can be used for various technical processes become.
  • Of particular interest in the context of this invention is the illumination of catalyst surfaces for photocatalysis of reactions.
  • a preferred example of an application is in air purification, especially in vehicles, such as automobiles.
  • air pollutants can be converted by a photocatalytic process and thus eliminated and thus the vehicle interior are supplied with a relation to the outside world qualitatively much improved air.
  • FIG. 1 of the present application shows an inventive lighting system with an electronic ballast 1, which is shown here as a simple cuboid.
  • the figure shows only the housing of the ballast 1, which contains the otherwise known per se circuit parts of a ballast for operating a dielectrically impeded discharge lamp. This may in particular be a class E converter.
  • FIG. 1 shows that in the rear region of the right side of the ballast 1 in FIG. 1, a substantially line-shaped dielectrically impeded discharge lamp 2 with two laterally projecting shielding surfaces 3 is inserted.
  • Figure 2 shows a detail of the ballast 1 and the lamp 2 of Figure 1 is a situation in which the lamp 2 is pulled out of the ballast 1.
  • FIG. 3 shows a plan view of the situation from FIG. 1.
  • FIG. 2 indicates that a base 7 of the tubular lamp 2 projects beyond the shielding surfaces 3 to the left and this cylindrical protruding one Base 7 has three further reaching axially extending electrode ends 4. Furthermore, FIG. 2 indicates that the ballast 1 has in its right side face "the otherwise parallelepiped housing shape a mating socket receptacle 5 with female plug connection elements 6 provided therein for the abovementioned axial electrode ends 4 of the discharge lamp 2.
  • the axial electrode ends 4 are left-hand ends of round-rod-shaped electrodes of the lamp 2 in FIGS. 1-3, which will be discussed in more detail with reference to FIGS. 4 to 9. These electrode ends are inserted according to FIG. 2 together with the base 7 of the discharge lamp 2 projecting beyond the shield surfaces 3 into the described socket 5 with the plug connection elements 6. As a result, as shown in FIGS. 1 and 3, the lamp 2 is not only electrically connected to the ballast 1, but moreover is also firmly mounted on it. The ballast 1 thus serves as a lamp holder. A flexible cable between the lamp 2 and ballast 1 can therefore be omitted.
  • the part of the lamp 2 extending beyond the shielding surfaces 3 is a plastic base 7 which, together with a second base 8 recognizable in FIGS. 1 and 3, is a tubular glass discharge vessel 9 in a shielding plate having the shielding surfaces 3 and described in more detail below 10 stops.
  • the shielding plate 10 is electrically conductively connected to the shielding surfaces 3 with the metallic housing of the ballast 1. This can be done for example by a small pin, not shown in Figures 1 and 2, which rests on the outer periphery of the base 7 and is inserted with this in the socket 5.
  • the shielding plate 10 is insulated with respect to the electrodes with the ends 4 via an insulation layer (not shown here but shown in FIG. 4). This is a plastic layer. This plastic insulation lies in the visible in Figures 1 - 3 part of the discharge vessel 9 between the screening surfaces 3, namely the aperture for light emission, not in front.
  • the shielding plate 10 forms with the sockets 7 and 8 a sleeve.
  • FIG. 4 a shows a variant of the mentioned plastic insulation, in the form of a base 11 extending over the lamp length and, incidentally, electrode ends 12 which on the one hand do not extend beyond the base 11 and on the other hand have a tubular shape.
  • These are female connector elements at the electrode ends in contrast to the male connector elements in Figure 2.
  • the pedestal 11 runs over the lamp length and merges into the pedestal (8 in Figures 1 and 3) at the opposite end of the lamp. He is biased by the shield 10 against the discharge vessel 9 and holds it without further action.
  • the discharge vessel 9 is thus a simple gas-filled tube with inner phosphor and reflection layers.
  • the insulating layer between the electrodes and the shielding plate 10 is formed at the same time as a base corresponding to the base 7 of Figure 2, so the socket does not engage around the entire circumference of the discharge vessel end around.
  • FIG. 4b shows a variant of FIG. 4a in which additional flattenings 13 are provided on the lateral regions of the base 11. These Flattened portions 13 are provided in complementary form on a shielding plate 10 (not illustrated here) corresponding to FIGS. 1-3, so that a correct alignment of the aperture with the shielding surfaces 3 can already be achieved.
  • the base 7 from FIG. 2 can also be designed such that it specifies a corresponding distance adjustment to the shielding plate 10 exclusively at the ends of the discharge vessel 9 and the insulation is only loosely inserted in the axial intermediate region or is completely omitted in the case of internal electrodes, for example.
  • FIGS. 5-9 show some variants of the discharge lamps according to FIGS. 1-4b.
  • FIG. 5 instead of three electrodes (or electrode ends) 4, as in FIG. 2, only two electrodes 4 are provided here. Both variants are possible. Occasionally, three electrodes are chosen for better light output. For the present invention, these differences are not of particular concern.
  • the opening angle between the screen surfaces 3, so the wing-like ends of the sleeve 10 is chosen here slightly smaller. However, this opening angle is still so great that it does not appreciably obstruct the actual light emission from the aperture in the upper region of the section shown in FIG. Nevertheless, these screen surfaces 3 serve to improve the electromagnetic shielding in the lateral direction by leakage fields emerging from the aperture.
  • FIG. 5 illustrates the aperture in that a phosphor layer 14 is shown there, which is interrupted in the region of the aperture.
  • FIG. 6 again shows three electrodes 4, but the essential difference consists in the fact that the shield surfaces 3 'from FIG. 6 are supplemented here by inwardly angled parts and thus limit an even narrower opening angle. This is still significantly larger than the aperture angle of the aperture relative to the center of the circle of the discharge vessel. However, since the peripheral portions of the phosphor layer 14 emit light as well, the outermost portions of the light emission become already dimmed. The shielding effect is, however, improved accordingly.
  • FIG. 1 has already made clear that the shielding plate 10 not only serves to hold the electrodes on the discharge vessel 9, but also stabilizes the assembly of the entire discharge lamp 2 on the ballast 1.
  • the shielding surfaces 3 can also be mounted separately, for example, clamped to the ballast 1, plugged or screwed. Incidentally, they can also have an assembly function with respect to components other than the ballast housing.
  • FIG. 7 shows a further variant of FIG. 5 with a further narrowed opening angle of the shielding surfaces 3, but here with straight shielding surfaces 3.
  • the base 7 according to FIG. 2 runs around the entire circumference of the discharge vessel 9 and does not save, as in FIG , the aperture off.
  • the base 7 is only attached to the outermost edge, this does not disturb the light emission or hardly.
  • Figure 8 differs just by this latter feature of Figure 7. Again, the aperture is recessed. It is therefore a base 11 according to FIG. 4.
  • FIG. 9 differs from FIG. 8 by an additional shielding part 15 in the opening angle of both the shielding surfaces 3 and the aperture.
  • This is configured radially in the illustrated cross-section and otherwise planar and in the perspective view in Figure 10 better visible. It slightly reduces the light emission through the aperture, but improves the electromagnetic shielding in the light emission direction additionally.
  • Such a part 15 may be a cost effective alternative or additional measure to a transparent conductive coating of the aperture, as shown in the already cited EP-font. For clarity, the details of the connector in Figure 10 are omitted.
  • FIG. 11 shows, in a representation similar to FIG. 10, a variant of the design of the shielding plate 10.
  • the shielding plate 10 with the shielding surfaces when viewed in section basically consists of two concentric semicircles 16 and 17 with substantially different diameters around the center of the circle of the section through the discharge vessel 9
  • the semicircles 16, 17 face each other with their openings.
  • the smaller of the semicircles 16 also shows a significantly greater distance from the discharge vessel 9, which is not shown here.
  • the smaller semicircle 16 serves as a reflector, reflecting the light radiated from the aperture into it (that is, to the right in FIG. 11) into the larger semicircle 17, which in turn reflects the light out of the cuff.
  • This variant offers a significantly poorer light output than the previous examples, but shows a much better EMC shielding.
  • FIG. 12 corresponds in the illustration to FIGS. 5 to 9, but shows an exemplary embodiment without shielding plate.
  • the sleeve is designed as a positive and non-positive plastic sleeve 18, which has corresponding mold recesses for the electrodes 4 and thus holds them on the discharge vessel 9.
  • the previously described shielding effect is omitted here or could be given by a shield without shielding; however, the other benefits of the cuff are also given.
  • FIG. 13 shows another form 19 of such a sleeve, which is also considerably more solid. It could for example be used for mounting in a corner situation and has matching inclined surfaces with each other right angle, which are designated 20.
  • FIGS. 14 and 15 show similar variants as in FIG. 13, but with an almost square cross-section of the sleeve 21 and with two in FIG. 14 and three electrodes 4 in FIG.
  • FIG. 16 shows a two-part variant of a cuff.
  • Both parts 22a and 22b together result in a similar cross-sectional shape as the sleeve 21 of Figures 14 and 15, but neither of the two halves already produces a positive connection or adhesion.
  • the two parts are thus applied from left and right to the discharge vessel 9 and then clipped together via a preferably non-detachable clip connection in the slot 23 and so brought opposite to the discharge vessel 9 to bias.
  • other cross-sectional shapes can be produced with comparable embodiments, in particular those as in the other embodiments.
  • FIG. 16 also illustrates that the electrodes, designated here by 24, can also have other than round cross-sectional shapes.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Claims (13)

  1. Système d'éclairage
    comprenant une lampe (2) à décharges rendues incomplètes par voie diélectrique, qui a une enceinte (9) de décharge s'étendant en longueur tubulairement et, à une extrémité de l'enceinte de décharge, des contacts (4) pour la connexion électrique de la lampe,
    et comprenant un ballast (1) électronique pour le fonctionnement de la lampe,
    caractérisé en ce qu'un élément de liaison à enfichage est assemblé fixement au boîtier du ballast,
    et est conçu de telle façon que la lampe peut, par l'extrémité ayant les contacts, être raccordée, en tant qu'élément de liaison à enfichage complémentaire par enfichage conjoint, avec l'élément de liaison à enfichage du boîtier du ballast.
  2. Système d'éclairage suivant la revendication 1, dans lequel l'élément de liaison à enfichage du ballast est intégré au boîtier du ballast.
  3. Système d'éclairage suivant la revendication 1 ou 2, dans lequel le boîtier du ballast a une douille d'enfichage recevant une extrémité extérieure de la lampe à décharge.
  4. Système d'éclairage suivant l'une des revendications précédentes, dans lequel au moins deux électrodes en forme de barreau sont mises sur la face extérieure de l'enceinte de décharge, les électrodes étant constituées à une extrémité sous la forme des contacts et ainsi en élément de liaison à enfichage.
  5. Système d'éclairage suivant la revendication 4, dans lequel les extrémités d'électrode, constituées en contact et en élément de liaison à enfichage, dépassent de la lampe à décharge dans la direction de l'étendue longitudinale de la lampe à décharge.
  6. Système d'éclairage suivant la revendication 4 ou 5, dans lequel les extrémités d'électrode constituées sous la forme d'élément de liaison à enfichage enserrent, au moins en partie, les éléments de liaison à enfichage antagoniste du ballast.
  7. Système d'éclairage suivant l'une des revendications précédentes, dans lequel la liaison à enfichage entre la lampe et l'élément complémentaire de liaison à enfichage du ballast est telle que la liaison à enfichage peut être produite par un simple mouvement de translation.
  8. Système d'éclairage suivant l'une des revendications précédentes, dans lequel la lampe à décharge a une tôle d'écran qui entoure en partie la lampe et qui est mise en contact électriquement lors de la liaison à enfichage entre la lampe et l'élément de liaison à enfichage complémentaire du ballast.
  9. Système d'éclairage suivant l'une des revendications précédentes, comprenant un écran métallique conducteur qui enserre en partie l'enceinte de décharge et dégage ainsi un angle d'ouverture pour l'émission de lumière, au moins une surface de l'écran étant éloignée de l'enceinte de décharge sur son extrémité la plus extérieure d'une étendue qui est au moins aussi grande que la moitié du diamètre moyen de l'enceinte de décharge, transversalement à l'étendue longitudinale.
  10. Système d'éclairage suivant l'une des revendications précédentes, comprenant au moins une électrode qui est mise le long de l'étendue longitudinale de l'enceinte de décharge sur la face extérieure de l'enceinte de décharge, l'électrode étant mise sur l'enceinte de décharge par complémentarité de formes avec une manchette enserrant les électrodes, manchette qui entoure en partie le pourtour de l'enceinte de décharge perpendiculairement à l'étendue longitudinale, mais dégage une ouverture pour l'émission de lumière.
  11. Procédé de connexion d'une lampe à décharge d'un système d'éclairage suivant l'une des revendications précédentes à un ballast électronique d'un système d'éclairage suivant l'une des revendications précédentes, dans lequel on enfiche la lampe à décharge, par une extrémité ayant des contacts allant à une borne électrique de la lampe, en tant qu'élément de liaison à enfichage, dans un élément de liaison à enfichage, qui en est complémentaire et qui est assemblé rigidement à l'enveloppe du ballast.
  12. Utilisation d'un système d'éclairage suivant l'une des revendications 1 à 10 comme source de rayons UV pour éclairer un catalyseur.
  13. Utilisation suivant la revendication 12, dans laquelle le catalyseur sert à épurer l'air dans un véhicule.
EP05018818A 2004-09-29 2005-08-30 Système d'illumination avec une lampe à décharge à barrière diélectrique et générateur de fréquence associé Expired - Fee Related EP1646071B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004047373A DE102004047373A1 (de) 2004-09-29 2004-09-29 Beleuchtungssystem mit dielektrisch behinderter Entladungslampe und zugehörigem Vorschaltgerät

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EP1646071A1 EP1646071A1 (fr) 2006-04-12
EP1646071B1 true EP1646071B1 (fr) 2007-07-11

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EP (1) EP1646071B1 (fr)
JP (1) JP4915012B2 (fr)
KR (1) KR20060051857A (fr)
CN (1) CN1755891B (fr)
AT (1) ATE366994T1 (fr)
CA (1) CA2521556A1 (fr)
DE (2) DE102004047373A1 (fr)
TW (1) TW200625379A (fr)

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Publication number Publication date
DE102004047373A1 (de) 2006-04-06
ATE366994T1 (de) 2007-08-15
CN1755891B (zh) 2012-05-30
DE502005001007D1 (de) 2007-08-23
JP2006100276A (ja) 2006-04-13
CN1755891A (zh) 2006-04-05
JP4915012B2 (ja) 2012-04-11
US20060066245A1 (en) 2006-03-30
CA2521556A1 (fr) 2006-03-29
TW200625379A (en) 2006-07-16
KR20060051857A (ko) 2006-05-19
EP1646071A1 (fr) 2006-04-12

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