EP3217075B1 - Ventilated motor vehicle lighting device with a replaceable air filter - Google Patents
Ventilated motor vehicle lighting device with a replaceable air filter Download PDFInfo
- Publication number
- EP3217075B1 EP3217075B1 EP17155074.2A EP17155074A EP3217075B1 EP 3217075 B1 EP3217075 B1 EP 3217075B1 EP 17155074 A EP17155074 A EP 17155074A EP 3217075 B1 EP3217075 B1 EP 3217075B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lighting device
- filter
- housing
- air
- motor vehicle
- 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.)
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- 238000009423 ventilation Methods 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000004753 textile Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/30—Ventilation or drainage of lighting devices
- F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/30—Ventilation or drainage of lighting devices
Definitions
- the present invention relates to a motor vehicle lighting device according to the preamble of claim 1.
- a device Lighting equipment is in each case from the documents JP H07 176201 , FR 2 950 675 A1 , EP 0 717 231 A1 , GB 1 472 189 A , JP H08 195104 A , DE 69 13 362 U , JP H07 147 106 A , Us 2005/227610 A1 and U.S. 5,406,467 A famous.
- a lighting device in the form of a headlamp which has a housing, a cover plate covering a light exit opening of the housing, a ventilation connection and an air filter which is arranged at the ventilation connection in the flow path of ventilation air flowing into the housing via the ventilation connection in front of the ventilation connection.
- the Ventilation structure / air guiding structure a component that is separate from the housing and the cover plate and is slipped onto a socket of the housing.
- Several such structures are arranged on the rear of the housing.
- a dust filter is arranged in the nozzle onto which the air guiding structure is attached.
- the present invention is not limited to headlights, but also relates to signal lights, in particular rear lights, but also separate front lights.
- the term lighting device here includes headlights and signal lights.
- the ventilation and venting of the lighting devices of motor vehicles is used to remove moisture from the interior of the lighting device.
- moisture condensed on the inside of the cover pane can be seen from the outside as an unsightly veil.
- the ventilation of the lighting device is intended to prevent the formation of such a veil as far as possible and to remove any veil that may nevertheless have arisen.
- the present invention differs from the prior art mentioned at the beginning by the characterizing features of claim 1.
- an inside of the connecting piece has a bevel surface which forms the transition of the connecting piece to the rest of the housing, and which The outside of the filter outlet has projections that match the chamfered surface and protrude beyond the clear width of the opening of the connecting piece, and the filter outlet has elastically flexible tongue-like wall sections that yield elastically when the filter outlet is inserted into the connecting piece.
- this object has the advantage that the housing can be removed from the mold when it is manufactured by injection molding.
- the dust filter used in the prior art mentioned at the beginning tends to become clogged due to the formation of residues.
- the flow resistance for the ventilation air flowing through the filter increases. This also worsens the effect of the ventilation, which consists in absorbing disruptive moisture from the interior of the lighting device and transporting it away.
- the invention allows the filter to be replaced without the lighting device having to be replaced. In this way, a deterioration in the removal of disruptive moisture, which occurs with increasing, generally years of service life of the motor vehicle, can be reversed with advantageously little effort, for example when performing maintenance in a workshop.
- a preferred embodiment is characterized in that the air filter has a filter insert which consists of a sintered material having pores, a textile fabric, a paper material having pores or a composite of such materials.
- the ventilation connection is part of the housing.
- Another preferred embodiment is characterized in that the ventilation connection is part of the cover plate.
- Ventilation connection serving connection piece of the rest of the lighting device is connected.
- Main flow direction of the air flowing through the air filter perpendicular directions are dimensioned to match one another so that they can be plugged into one another without play.
- the housing and the filter outlet of the air filter as well as the connecting piece of the remaining lighting device are made of plastic.
- the air filter can be releasably connected to the ventilation connection of the rest of the lighting device with a screw connection.
- the air filter can be releasably connected to a ventilation connection of the rest of the lighting device with a plug-in rotary lock.
- the ventilation connection has a flange, and that The filter housing has a mating flange, and the mating flange is held by screws and / or leaf spring elements on the mating flange. Each end of such a leaf spring element is rigidly or pivotably connected to the flange or the mating flange.
- the Figure 1 an arrangement of a motor vehicle lighting device 10 and at least one surrounding part 12, 14 in a vertical section.
- the surrounding parts 12, 14 are, for example, part of the vehicle body, part of an adjacent lighting device that has its own housing, or part of a radiator of the motor vehicle adjoining the lighting device.
- the arrangement shown is obtained when the lighting device is used as intended, in which the lighting device is installed in a motor vehicle.
- the cutting plane of the vertical section is the xz-plane of a right-handed and right-angled coordinate system, whose x-direction corresponds to the direction of the vehicle's longitudinal axis, whose y-direction is transverse to it and parallel to the horizon and whose z-direction is transverse to the x-direction, transverse to the y- Facing upwards and vertically.
- This direction convention of the x-direction applies in particular to headlights and front lights.
- the lighting device is a headlight.
- the invention is not limited to headlights, but can also be implemented with front lights and rear lights.
- At least one light module 16 is arranged, which is used to generate a light distribution that conforms to the rules for the lighting device, be it a headlight light distribution or a signal light distribution is set up.
- the lighting device 10 has a housing 18 and a transparent cover plate 20.
- the cover plate is in the form of a shell, which has a transparent base 22 and an edge 24 that encircles the base 22 and protrudes from it like a wall.
- the cover plate covers the light exit surface of the housing 18 with its transparent base 22.
- the edge 24 is received by a sealing bed 26 surrounding the light exit opening of the housing 18 and is held tightly and firmly in the sealing bed 26.
- the lighting device has a ventilation opening 28 and a ventilation opening 30.
- the ventilation opening is used to allow air to flow into an interior 32 of the lighting device 10 that is delimited by the housing 18 and the cover plate 20.
- the ventilation opening 30 is used to allow air to flow out of the interior 32.
- Air flowing in through the ventilation opening 28 absorbs moisture in the interior 32 of the housing 18 and transports the absorbed moisture out of the housing 18 via the ventilation opening 30.
- the ventilation opening 28 and the ventilation opening 30 on the lighting device 10 are preferably arranged in such a way that, when used as intended in a motor vehicle, under the influence of the airflow, the air pressure in the ventilation opening 28 is greater than in the ventilation opening 30.
- a fan 33 is arranged, which generates a pressure falling from the ventilation opening 28 to the ventilation opening 30.
- the fan 33 is preferably a cooling fan which is used, in particular, in lighting devices equipped with semiconductor light sources to cool these light sources.
- a ventilation connection 34 for an air filter 36 is arranged at the ventilation opening 28 on the outside of the housing 18, that is to say outside the interior 32.
- the ventilation connection is preferably protected from the wind behind a body part. This has the advantage that overall less dust hits the air filter.
- the ventilation connection 34 is implemented here as a connection piece 35 which has an air inlet side facing the air filter 36 and an air outlet side which opens into the interior 32 of the lighting device 10 via the ventilation opening 28.
- the air filter 36 is exchangeable and is arranged on the air inlet side of the connecting piece 35.
- the exchangeable air filter 36 has a filter inlet 38, a filter outlet 40 and an air filter insert 42 which is arranged in an air filter housing 44 of the air filter 36 between the filter inlet 38 and the filter outlet 40.
- the filter insert 42 fills the filter housing 44 in directions that are transverse to the air flow direction directed from the filter inlet 38 to the filter outlet 40, so that air which has entered the filter housing 44 via the filter inlet 38 and flows out via the filter outlet 40 passes through the filter insert 42 passes through and is thus filtered.
- the filter insert 42 preferably consists of a sintered material having pores, a textile fabric, a paper material having pores or a composite of such materials. Due to the size of its pores, the filter is designed to allow air to flow in, but in particular not to allow insects and smaller and larger dirt particles such as dust and grains of sand to pass through. Rapid soiling of the lighting device 10 can thereby be avoided.
- the exchangeable air filter 36 is detachably connected to the rest of the lighting device 10 in a non-destructive manner.
- the exchangeable air filter 36 is connected to the housing 18 of the lighting device 10.
- the exchangeable air filter 36 is connected to the cover plate 22 of the lighting device 10.
- the cover plate 22 has a connecting piece 34 '.
- the properties of the connecting piece 34 ′ are identical to the properties of the connecting piece 34.
- connection stub 34 ′ shown in dashed lines represents a supplement or an alternative to the connection stub 34.
- the filter outlet 40 is connected to the connecting piece 34 by means of a clip connection connected.
- the cross-sections of the filter outlet 40 and the connecting piece 34 are in the directions perpendicular to the main flow direction 46 of the air, which in the Figure 1 the x-direction and the y-direction are dimensioned to match each other so that they can be plugged into each other with as little play as possible and thus as airtight as possible.
- the filter outlet 40 can be plugged into the connecting piece 35.
- the filter outlet is plugged onto the connecting piece.
- the cross-section of the connecting piece 35 has the same shape as the cross-section of the filter outlet 40.
- the dimensions of the clear width of the connecting piece 35 correspond to the external dimensions of the filter outlet 40 in the example shown, so that the filter outlet 40 can be plugged tightly into the connecting piece 35.
- With the outer dimensions are meant the dimensions that result outside of locally delimited depressions and projections.
- the wall of the filter outlet 40 preferably has a plurality of recesses 52 aligned parallel to the insertion direction.
- the wall parts standing between two such recesses 52 thereby form tongue-like wall sections 54, which yield elastically when inserted and thus ensure a firm and tight fit of the air filter 36 in the connecting piece 35.
- the walls of the intake connector can also have such recesses and tongue-like wall sections.
- the inside of the connecting piece 35 has one or more depressions 56.
- the outside of the The filter outlet 40 has projections 58 which are shaped to match the depressions 56 in the inside of the connecting piece 35 and protrude beyond the clear width of the opening of the connecting piece 35.
- one embodiment provides a recess 60 in the outer wall of the outer part, here the connecting piece 35, through which an inward pressure is applied to the inner part, here the filter outlet 40, either manually or with a tool , can be exercised, with which a projection 58 can be pushed out of a recess 56.
- a pressure facilitates the release of the locking connection.
- Figure 6 shows a modification of the subject matter of FIG Figure 2 .
- the function of the recess 56 of the article of Figure 2 is taken over here by a bevel surface 59, which forms the transition from the connecting piece 35 to the rest of the housing 18.
- the bevel has the shape of a lateral surface of a truncated cone.
- the Subject of Figure 6 the advantage of better demoldability of the housing 18 when it is manufactured by injection molding.
- the housing 44 and the filter outlet 40 of the air filter 36 and the connecting piece 35 of the rest of the lighting device 10 are preferably made of plastic and are produced by an injection molding process.
- the structures required for the latching connection / clip connection such as the tongue-like wall sections, can be easily produced with an injection molding process, plastics with the desired elastic properties being available at low cost.
- An advantage of the embodiment of Figure 2 consists in the fact that the shape of the cross-section of the clear widths of connecting piece 35 and filter outlet 40 (in the xy plane) is not subject to any restrictions and can in particular be oval or polygonal, in particular elongated rectangular, so that the filter can also have a linear shape , with which it can be arranged in front of an elongated ventilation gap.
- the Figure 3 shows an example in which the air filter can be detachably connected to a connecting piece 34 with a screw connection.
- the filter outlet 40 is provided with an external thread 62, and the connecting piece 35 has a matching internal thread 64.
- the filter outlet has an internal thread and the connecting piece has a matching external thread.
- the outside diameter of the air filter 36 is preferably larger than the thread diameter.
- FIG. 4 shows a further embodiment in which a plug-in twist lock (bayonet lock) is used to releasably connect the filter outlet 40 to the connecting piece 35.
- a plug-in twist lock bayonet lock
- one of the two parts connection piece or filter outlet
- the other part has a guide track 66 for each pin in the axial direction open first end 66.1 and a further, in the axial direction and in the circumferential direction offset from the first end 66.1 arranged second end 66.2.
- Figure 5 shows an embodiment in which the housing 18 (or the cover plate 20) has a flange 68 as a ventilation connection 34 and in which the filter outlet 40 has a counter flange 70.
- the counterflange 70 is held on the flange 68 by screws 72 and / or leaf spring elements, the end of which on the counterflange side is rigidly or pivotably connected to the housing or the cover disk.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Die vorliegende Erfindung betrifft eine Kraftfahrzeugbeleuchtungseinrichtung nach dem Oberbegriff des Anspruchs 1. Eine solche
Beleuchtungseinrichtungseinrichtung ist jeweils aus den Dokumenten
Lighting equipment is in each case from the documents
Aus der
Bei dem bekannten Gegenstand ist die
Belüftungsstruktur/Luftführungsstruktur ein von dem Gehäuse und der Abdeckscheibe separates Bauteil, das auf einen Stutzen des Gehäuses aufgesteckt ist. Mehrere derartige Strukturen sind auf der Rückseite des Gehäuses angeordnet. In dem Stutzen, auf den die Luftführungsstruktur aufgesteckt wird, ist ein Staubfilter angeordnet.In the case of the known item, the
Ventilation structure / air guiding structure a component that is separate from the housing and the cover plate and is slipped onto a socket of the housing. Several such structures are arranged on the rear of the housing. A dust filter is arranged in the nozzle onto which the air guiding structure is attached.
Die vorliegende Erfindung ist nicht auf Scheinwerfer beschränkt, sondern sie betrifft auch Signalleuchten, insbesondere Heckleuchten, aber auch separate Bugleuchten. Der Begriff der Beleuchtungseinrichtung umfasst hier insofern Scheinwerfer und Signalleuchten.The present invention is not limited to headlights, but also relates to signal lights, in particular rear lights, but also separate front lights. The term lighting device here includes headlights and signal lights.
Die Belüftung und Entlüftung der Beleuchtungseinrichtungen von Kraftfahrzeugen dient dazu, Feuchtigkeit aus dem Innenraum der Beleuchtungseinrichtung zu entfernen. Insbesondere auf der Innenseite der Abdeckscheibe kondensierte Feuchtigkeit ist von außen als unschöner Schleier erkennbar. Manche Endkunden gehen irrtümlich davon aus, dass es sich hierbei um einen Defekt handelt und suchen ihre Händler auf, um den Vorfall zu reklamieren.The ventilation and venting of the lighting devices of motor vehicles is used to remove moisture from the interior of the lighting device. In particular, moisture condensed on the inside of the cover pane can be seen from the outside as an unsightly veil. Some end customers mistakenly assume that this is a defect and go to their dealer to complain about the incident.
Die Be- und Entlüftung der Beleuchtungseinrichtung soll die Bildung eines solchen Schleiers nach Möglichkeit verhindern und einen gegebenenfalls trotzdem entstandenen Schleier wieder beseitigen.The ventilation of the lighting device is intended to prevent the formation of such a veil as far as possible and to remove any veil that may nevertheless have arisen.
Von dem eingangs genannten Stand der Technik unterscheidet sich die vorliegende Erfindung durch die kennzeichnenden Merkmale des Anspruchs 1.The present invention differs from the prior art mentioned at the beginning by the characterizing features of claim 1.
Nach diesen Merkmalen weist eine Innenseite des Anschlussstutzens eine Fasenfläche auf, die den Übergang des Anschlussstutzens zum übrigen Gehäuse bildet, und die Außenseite des Filterausgangs weist zu der Fasenfläche passend geformte Vorsprünge auf, die über die lichte Weite der Öffnung des Anschlussstutzens hinausragen, und der Filterausgang weist elastisch nachgiebige zungenartige Wandabschnitte auf, die beim Einstecken des Filterausgangs in den Anschlussstutzen elastisch nachgeben.According to these features, an inside of the connecting piece has a bevel surface which forms the transition of the connecting piece to the rest of the housing, and which The outside of the filter outlet has projections that match the chamfered surface and protrude beyond the clear width of the opening of the connecting piece, and the filter outlet has elastically flexible tongue-like wall sections that yield elastically when the filter outlet is inserted into the connecting piece.
Dieser Gegenstand weist insbesondere den Vorteil guten Entformbarkeit des Gehäuses bei dessen Herstellung durch Spritzgießen auf.In particular, this object has the advantage that the housing can be removed from the mold when it is manufactured by injection molding.
Der bei dem eingangs genannten Stand der Technik verwendete Staubfilter neigt durch Rückstandsbildung zur Verstopfung. Mit zunehmender Beladung des Filters mit gefiltertem Staub erhöht sich der Strömungswiderstand für die durch den Filter strömende Belüftungsluft. Damit verschlechtert sich auch die Wirkung der Belüftung, die darin besteht, störende Feuchtigkeit aus dem Inneren der Beleuchtungseinrichtung aufzunehmen und abzutransportieren.The dust filter used in the prior art mentioned at the beginning tends to become clogged due to the formation of residues. As the filter becomes increasingly loaded with filtered dust, the flow resistance for the ventilation air flowing through the filter increases. This also worsens the effect of the ventilation, which consists in absorbing disruptive moisture from the interior of the lighting device and transporting it away.
Die Erfindung erlaubt eine Auswechselung des Filters ohne dass dabei die Beleuchtungseinrichtung ausgewechselt werden muss. Damit kann eine Verschlechterung des Abtransports von störender Feuchtigkeit, die sich mit zunehmender, in der Regel jahrelanger Betriebsdauer des Kraftfahrzeuges ergibt, mit einem vorteilhaft geringen Aufwand, zum Beispiel bei der Durchführung einer Wartung in einer Werkstatt, rückgängig gemacht werden.The invention allows the filter to be replaced without the lighting device having to be replaced. In this way, a deterioration in the removal of disruptive moisture, which occurs with increasing, generally years of service life of the motor vehicle, can be reversed with advantageously little effort, for example when performing maintenance in a workshop.
Eine bevorzugte Ausgestaltung zeichnet sich dadurch aus, dass der Luftfilter einen Filtereinsatz aufweist, der aus einem Poren aufweisenden, gesinterten Material, einem Textilgewebe, einem Poren aufweisenden Papiermaterial oder einem Verbund solcher Materialien besteht.A preferred embodiment is characterized in that the air filter has a filter insert which consists of a sintered material having pores, a textile fabric, a paper material having pores or a composite of such materials.
Bevorzugt ist auch, dass der Belüftungsanschluss ein Bestandteil des Gehäuses ist.It is also preferred that the ventilation connection is part of the housing.
Eine weitere bevorzugte Ausgestaltung zeichnet sich dadurch aus, dass der Belüftungsanschluss ein Bestandteil der Abdeckscheibe ist.Another preferred embodiment is characterized in that the ventilation connection is part of the cover plate.
Bevorzugt ist auch, dass ein Filterausgang des Luftfilters durch eine Clip-Verbindung mit einem alsIt is also preferred that a filter outlet of the air filter by a clip connection with an as
Belüftungsanschluss dienenden Anschlussstutzen der übrigen Beleuchtungseinrichtung verbunden ist.Ventilation connection serving connection piece of the rest of the lighting device is connected.
Bevorzugt ist auch, dass Querschnitte des Filterausgangs und des Anschlussstutzens in zu einerIt is also preferred that cross-sections of the filter outlet and the connecting piece in one
Hauptströmungsrichtung der den Luftfilter durchströmenden Luft senkrechten Richtungen passend zueinander so bemessen sind, dass sie spielfrei ineinander gesteckt werden können.Main flow direction of the air flowing through the air filter, perpendicular directions are dimensioned to match one another so that they can be plugged into one another without play.
Erfindungsgemäß bestehen das Gehäuse und der Filterausgang des Luftfilters sowie der Anschlussstutzen der übrigen Beleuchtungseinrichtung aus Kunststoff.According to the invention, the housing and the filter outlet of the air filter as well as the connecting piece of the remaining lighting device are made of plastic.
In einer nicht erfindungsgemäßen Alternative ist der Luftfilter mit einer Schraubverbindung lösbar mit dem Belüftungsanschluss der übrigen Beleuchtungseinrichtung verbindbar.In an alternative not according to the invention, the air filter can be releasably connected to the ventilation connection of the rest of the lighting device with a screw connection.
In einer weiteren nicht erfindungsgemäßen Alternative ist der Luftfilter mit einem Steck-Drehverschluss lösbar mit einem Belüftungsanschluss der übrigen Beleuchtungseinrichtung verbindbar.In a further alternative not according to the invention, the air filter can be releasably connected to a ventilation connection of the rest of the lighting device with a plug-in rotary lock.
In einer weiteren nicht erfindungsgemäßen Alternative weist der Belüftungsanschluss einen Flansch auf, und das Filtergehäuse weist einen Gegenflansch auf, und der Gegenflansch wird durch Schrauben und oder Blattfederelemente am Gegenflansch festgehalten.Jeweils ein Ende eines solchen Blattfederelements ist starr oder schwenkbar mit dem Flansch oder dem Gegenflansch verbunden ist.In a further alternative not according to the invention, the ventilation connection has a flange, and that The filter housing has a mating flange, and the mating flange is held by screws and / or leaf spring elements on the mating flange. Each end of such a leaf spring element is rigidly or pivotably connected to the flange or the mating flange.
Weitere Vorteile ergeben sich aus der nachfolgenden Beschreibung, den Zeichnungen und den Unteransprüchen. Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden beanspruchten Erfindung zu verlassen.Further advantages emerge from the following description, the drawings and the subclaims. It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or on their own, without departing from the scope of the present claimed invention.
Beispiele, die nicht unter die beanspruchte Erfindung fallen, sowie ein Ausführungsbeispiel der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert.Examples that do not fall under the claimed invention and an embodiment of the invention are shown in the drawings and are explained in more detail in the following description.
Dabei zeigen, jeweils in schematischer Form:
-
Figur 1 ein erstes nicht erfindungsgemäßes Beispiel in einem Vertikalschnitt; -
Figur 2 eine vergrößerte Einzelheit aus derFigur 1 ; -
Figur 3 ein zweites nicht erfindungsgemäßes Beispiel in einem Vertikalschnitt; -
Figur 4 ein drittes nicht erfindungsgemäßes Beispiel in einem Vertikalschnitt; -
Figur 5 ein viertes nicht erfindungsgemäßes Beispiel in einem Vertikalschnitt, und -
Figur 6 eine erfindungsgemäße Abwandlung der Einzelheit aus derFigur 2 .
-
Figure 1 a first example not according to the invention in a vertical section; -
Figure 2 an enlarged detail from theFigure 1 ; -
Figure 3 a second example not according to the invention in a vertical section; -
Figure 4 a third example not according to the invention in a vertical section; -
Figure 5 a fourth example not according to the invention in a vertical section, and -
Figure 6 an inventive modification of the detail fromFigure 2 .
Dabei bezeichnen gleiche Bezugszeichen in verschiedenen Figuren jeweils gleiche oder zumindest ihrer Funktion nach vergleichbare Elemente.The same reference symbols in different figures denote the same or at least comparable elements in terms of their function.
Im Einzelnen zeigt die
Die Umgebungsteile 12, 14 sind zum Beispiel ein Teil der Fahrzeugkarosserie, ein Teil einer benachbarten Beleuchtungseinrichtung, die ein eigenes Gehäuse besitzt, oder ein Teil eines an die Beleuchtungseinrichtung angrenzenden Kühlers des Kraftfahrzeugs. Die dargestellte Anordnung ergibt sich bei einer bestimmungsgemäßen Verwendung der Beleuchtungseinrichtung, bei der die Beleuchtungseinrichtung in ein Kraftfahrzeug eingebaut ist. Die Schnittebene des Vertikalschnitts ist die x-z-Ebene eines rechtshändigen und rechtwinkligen Koordinatensystems, dessen x-Richtung der Richtung der Fahrzeuglängsachse entspricht, dessen y-Richtung quer dazu und parallel zum Horizont und dessen z-Richtung quer zur x-Richtung, quer zur y-Richtung und vertikal nach oben weist. Diese Richtungskonvention der x-Richtung trifft insbesondere für Scheinwerfer und Bugleuchten zu. Im Folgenden wird zunächst davon ausgegangenen, dass die Beleuchtungseinrichtung ein Scheinwerfer ist. Die Erfindung ist aber nicht auf Scheinwerfer beschränkt, sondern sie ist auch bei Bugleuchten und bei Heckleuchten realisierbar.The surrounding
Im Inneren der Beleuchtungseinrichtung 10 ist wenigstens ein Lichtmodul 16 angeordnet, das zur Erzeugung einer für die Beleuchtungseinrichtung regelkonformen Lichtverteilung, sei es eine Scheinwerferlichtverteilung oder eine Signallichtverteilung, eingerichtet ist.In the interior of the
Die Beleuchtungseinrichtung 10 weist ein Gehäuse 18 und eine transparente Abdeckscheibe 20 auf. Die Abdeckscheibe hat die Form einer Schale, die einen transparenten Boden 22 und einen den Boden 22 umlaufenden und von diesem wandartig abstehenden Rand 24 besitzt. Die Abdeckscheibe deckt mit ihrem transparenten Boden 22 die Lichtaustrittsfläche des Gehäuses 18 ab. Der Rand 24 wird durch ein die Lichtaustrittsöffnung des Gehäuses 18 umlaufendes Dichtbett 26 aufgenommen und in dem Dichtbett 26 dicht und fest gehalten.The
Die Beleuchtungseinrichtung weist eine Belüftungsöffnung 28 und eine Entlüftungsöffnung 30 auf. Die Belüftungsöffnung dient dazu, Luft in einen vom dem Gehäuse 18 und der Abdeckscheibe 20 begrenzten Innenraum 32 der Beleuchtungseinrichtung 10 einströmen zu lassen. Die Entlüftungsöffnung 30 dient dazu, Luft aus dem Innenraum 32 ausströmen zu lassen.The lighting device has a ventilation opening 28 and a ventilation opening 30. The ventilation opening is used to allow air to flow into an
Durch die Belüftungsöffnung 28 einströmende Luft nimmt im Innenraum 32 des Gehäuses 18 Feuchtigkeit auf und transportiert die aufgenommene Feuchtigkeit über die Entlüftungsöffnung 30 aus dem Gehäuse 18 heraus. Um eine solche Durchströmung zu gewährleisten, sind die Belüftungsöffnung 28 und die Entlüftungsöffnung 30 an der Beleuchtungseinrichtung 10 bevorzugt so angeordnet, dass sich bei bestimmungsgemäßer Verwendung in einem Kraftfahrzeug unter Fahrtwindeinfluss in der Belüftungsöffnung 28 ein größerer Luftdruck einstellt als in der Entlüftungsöffnung 30.Air flowing in through the
Alternativ oder ergänzend ist im Inneren der Beleuchtungseinrichtung ein Gebläse 33 angeordnet, das einen von der Belüftungsöffnung 28 zur Entlüftungsöffnung 30 hin abfallenden Druck erzeugt. Bei dem Gebläse 33 handelt es sich bevorzugt um ein Kühlgebläse, das insbesondere bei mit Halbleiterlichtquellen ausgerüsteten Beleuchtungseinrichtungen zur Kühlung dieser Lichtquellen dient.Alternatively or in addition, inside the Lighting device, a
An der Belüftungsöffnung 28 ist am Gehäuse 18 außen, das heißt außerhalb des Innenraums 32, ein Belüftungsanschluss 34 für einen Luftfilter 36 angeordnet. Der Belüftungsanschluss liegt bevorzugt vor Fahrtwind geschützt hinter einem Karosserieteil. Das hat den Vorteil, dass insgesamt weniger Staub auf den Luftfilter trifft. Der Belüftungsanschluss 34 ist hier als Anschlussstutzen 35 verwirklicht, der eine dem Luftfilter 36 zugewandte Lufteintrittsseite und eine Luftaustrittsseite aufweist, die über die Belüftungsöffnung 28 in den Innenraum 32 der Beleuchtungseinrichtung 10 mündet.At the
Der Luftfilter 36 ist auswechselbar und an der Lufteintrittsseite des Anschlussstutzens 35 angeordnet. Der auswechselbare Luftfilter 36 weist einen Filtereingang 38, einen Filterausgang 40 und einen Luftfiltereinsatz 42 auf, der in einem Luftfiltergehäuse 44 des Luftfilters 36 zwischen dem Filtereingang 38 und dem Filterausgang 40 angeordnet ist.The
Der Filtereinsatz 42 füllt das Filtergehäuse 44 in Richtungen, die quer zu der vom Filtereingang 38 zum Filterausgang 40 gerichteten Luftströmungsrichtung liegen, so aus, dass über den Filtereingang 38 in das Filtergehäuse 44 eingetretene Luft, die über den Filterausgang 40 abströmt, durch den Filtereinsatz 42 hindurchtritt und damit gefiltert wird.The
Der Filtereinsatz 42 besteht bevorzugt aus einem Poren aufweisenden, gesinterten Material, einem Textilgewebe, einem Poren aufweisenden Papiermaterial oder einem Verbund solcher Materialien. Das Filter ist durch die Größe seiner Poren dazu eingerichtet, Luft einströmen zu lassen, aber insbesondere Insekten und kleinere und größere Schmutzteilchen wie Staub und Sandkörner nicht hindurchzulassen. Dadurch kann eine schnelle Verschmutzung der Beleuchtungseinrichtung 10 vermieden werden.The
Der auswechselbare Luftfilter 36 ist zerstörungsfrei lösbar mit der übrigen Beleuchtungseinrichtung 10 verbunden. In der dargestellten Ausgestaltung ist der auswechselbare Luftfilter 36 mit dem Gehäuse 18 der Beleuchtungseinrichtung 10 verbunden. In einer alternativen Ausgestaltung ist der auswechselbare Luftfilter 36 mit der Abdeckscheibe 22 der Beleuchtungseinrichtung 10 verbunden. In diesem Fall weist die Abdeckscheibe 22 einen Anschlussstutzen 34' auf. Die Eigenschaften des Anschlussstutzens 34' sind mit den Eigenschaften des Anschlussstutzens 34 identisch.The
Die folgende Beschreibung der Verbindung des auswechselbaren Luftfilters 36 mit einem Anschlussstutzen 34 der übrigen Beleuchtungseinrichtung gilt sowohl für den Fall, dass der Anschlussstutzen 34 ein Teil des Gehäuses 18 ist, als auch für den Fall, dass der Anschlussstutzen als Anschlussstutzen 34' ein Teil der Abdeckscheibe 22 ist. Der gestrichelt dargestellte Anschlussstutzen 34' stellt eine Ergänzung oder eine Alternative zum Anschlussstutzen 34 dar.The following description of the connection of the
In einer bevorzugten Ausgestaltung ist der Filterausgang 40 durch eine Clip-Verbindung mit dem Anschlussstutzen 34 verbunden. Die Querschnitte des Filterausgangs 40 und des Anschlussstutzens 34 sind in den zur Hauptströmungsrichtung 46 der Luft senkrechten Richtungen, die in der
In der
Der Querschnitt des Anschlussstutzens 35 besitzt die gleiche Form wie der Querschnitt des Filterausgangs 40. Die Abmessungen der lichten Weite des Anschlussstutzens 35 entsprechen bei dem dargestellten Beispiel den Außenabmessungen des Filterausgangs 40, so dass der Filterausgang 40 dicht in den Anschlussstutzen 35 eingesteckt werden kann. Mit den Außenabmessungen sind dabei die Abmessungen gemeint, die sich außerhalb lokal begrenzter Vertiefungen und Vorsprünge ergeben.The cross-section of the connecting
In der Einsteckrichtung 46 weist die Wand des Filterausgangs 40 bevorzugt mehrere parallel zur Einsteckrichtung ausgerichtete Ausnehmungen 52 auf. Die zwischen je zwei solchen Ausnehmungen 52 stehenden Wandteile bilden dadurch zungenartige Wandabschnitte 54, die beim Einstecken elastisch federnd nachgeben und so für einen festen und dichten Sitz des Luftfilters 36 in dem Anschlussstutzen 35 sorgen. Alternativ oder ergänzend können auch die Wände des Ansaugstutzens solche Ausnehmungen und zungenartigen Wandabschnitte aufweisen. Die Innenseite des Anschlussstutzens 35 weist eine oder mehrere Vertiefungen 56 auf. Die Außenseite des Filterausgangs 40 weist zu den Vertiefungen 56 in der Innenseite des Anschlussstutzens 35 passend geformte Vorsprünge 58 auf, die über die lichte Weite der Öffnung des Anschlussstutzens 35 hinausragen. Beim Einstecken des Filterausgangs 40 in den Anschlussstutzen 35 geben die elastisch nachgiebigen zungenartigen Wandabschnitte 54 nach, so dass der Filterausgang 40 leicht in den Anschlussstutzen 35 eingesteckt werden kann.In the
Beim Einstecken rasten die Vorsprünge 58 dann in den Vertiefungen 56 ein. Die dadurch hergestellte Steckverbindung ist durch einfaches Herausziehen des Luftfilters 36 aus dem Anschlussstutzen 40 zerstörungsfrei lösbar. Der Vorteil einer solchen durch Rasten verriegelten Clip- oder Rastverbindung besteht darin, dass sie ein Auswechseln des Luftfilters 36 mit einer Hand und ohne Werkzeug erlaubt.When inserted, the
Zur Erleichterung des Lösens der Rastverbindung sieht eine Ausgestaltung eine Ausnehmung 60 in der Außenwand des außen liegenden Teils, hier des Anschlussstutzens 35, vor, durch den hindurch manuell oder auch mit einem Werkzeug ein nach innen gerichteter Druck auf das innenliegende Teil, hier der Filterausgang 40, ausgeübt werden kann, mit dem ein Vorsprung 58 aus einer Vertiefung 56 herausgedrückt werden kann. Ein solcher Druck erleichtert das Lösen der Rastverbindung.To facilitate the release of the locking connection, one embodiment provides a
Das Gehäuse 44 und der Filterausgang 40 des Luftfilters 36 sowie der Anschlussstutzen 35 der übrigen Beleuchtungseinrichtung 10 bestehen bevorzugt aus Kunststoff und sind durch ein Spritzgussverfahren hergestellt. Mit einem Spritzgussverfahren lassen sich insbesondere die für die Rastverbindung/Clipverbindung erforderlichen Strukturen wie die zungenartigen Wandabschnitte leicht herstellen, wobei Kunststoffe mit den erwünschten elastischen Eigenschaften preiswert zur Verfügung stehen. Ein Vorteil des Ausführungsbeispiels der
Die
Claims (6)
- A motor vehicle lighting device (10) comprising a housing (18), a cover plate (20) covering a light outlet opening of the housing (18), a ventilation port (34), and an air filter (36) which is arranged at the ventilation port (34) upstream of the ventilation port in the flow path of ventilation air flowing into the housing (18) via the ventilation port (34), wherein the air filter (36) is connected to the ventilation port (34) in a non-destructively detachable and thus replaceable manner, and wherein the ventilation port (34) is implemented as a connection piece (35) which has an air inlet side facing the air filter (36) and an air outlet side which opens into the interior (32) of the lighting device (10) via the ventilation opening (28), and wherein a housing (44) and a filter outlet (40) of the air filter (36) as well as the connection piece (35) of the remaining lighting device (10) are made of plastic, characterized in that an inner side of the connection piece (35) has a chamfered surface (59) which forms the transition of the connection piece (35) to the remaining housing (18), and in that the outer side of the filter outlet (40) has projections (58) which are shaped to match the chamfered surface and project beyond the inner width of the opening of the connection piece (35), and in that the filter outlet has elastically yielding tongue-like wall sections which yield elastically when the filter outlet (40) is inserted into the connection piece (35).
- The motor vehicle lighting device (10) according to claim 1, characterized in that the air filter (36) comprises a filter insert (42) made of a sintered material having pores, a textile fabric, a paper material having pores or a composite of such materials.
- The motor vehicle lighting device (10) according to one of the preceding claims, characterized in that the ventilation port (34) is a part of the housing (18).
- The motor vehicle lighting device (10) according to one of claims 1 or 2, characterized in that the ventilation port (34) is a part of the cover plate (20).
- The motor vehicle lighting device (10) according to one of the preceding claims, characterized in that the filter outlet (40) of the air filter (36) is connected by a clip-type connection to the connection piece (35) of the remaining lighting device (10) which is used as the ventilation port (34).
- The motor vehicle lighting device (10) according to claim 5, characterized in that cross sections of the filter outlet (40) and of the connection piece (35) are dimensioned to fit one another in directions perpendicular to a main flow direction (46) of the air flowing through the air filter (36) such that they can be plugged into one another free of play.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016104006.1A DE102016104006A1 (en) | 2016-03-04 | 2016-03-04 | Ventilated automotive lighting device with a replaceable air filter |
Publications (2)
Publication Number | Publication Date |
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EP3217075A1 EP3217075A1 (en) | 2017-09-13 |
EP3217075B1 true EP3217075B1 (en) | 2021-08-04 |
Family
ID=58009693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17155074.2A Active EP3217075B1 (en) | 2016-03-04 | 2017-02-07 | Ventilated motor vehicle lighting device with a replaceable air filter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3217075B1 (en) |
JP (1) | JP2017157559A (en) |
DE (1) | DE102016104006A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2021524561A (en) | 2018-05-22 | 2021-09-13 | マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング | Vehicles with brake dust particle filters, lighting housing parts for brake dust particle filters, and brake dust particle filters |
DE102019129372A1 (en) * | 2019-10-30 | 2021-05-06 | Automotive Lighting Reutlingen Gmbh | Ventilation module for a lighting device of a motor vehicle |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6913362U (en) * | 1969-04-02 | 1969-10-16 | Licentia Gmbh | DEVICE FOR VENTILATING DEVICES |
FR2232465B3 (en) * | 1973-06-07 | 1976-03-12 | Bosch Gmbh Robert | |
JPH07147106A (en) * | 1993-08-18 | 1995-06-06 | Kanto Auto Works Ltd | Ventilation structure for lighting apparatus |
JPH07176201A (en) * | 1993-12-20 | 1995-07-14 | Kanto Auto Works Ltd | Ventilating structure for lighting fixture |
US5406467A (en) * | 1994-08-01 | 1995-04-11 | Ford Motor Company | Ventilation system for motor vehicle light fixture |
DE4444832A1 (en) * | 1994-12-15 | 1996-06-20 | Bayerische Motoren Werke Ag | Luminaire unit for motor vehicles |
JPH08195104A (en) * | 1995-01-13 | 1996-07-30 | Stanley Electric Co Ltd | Lamp tool for vehicle |
DE10012248A1 (en) | 2000-03-14 | 2001-09-20 | Bosch Gmbh Robert | Motor vehicle headlamp has frame enclosing ventilation channel at distance, inclined in same direction as ventilation channel at lower edge, with least one opening near lowest point |
US7357709B2 (en) * | 2004-04-12 | 2008-04-15 | Gore Enterprise Holdings | Metal vent |
FR2950675B1 (en) * | 2009-09-29 | 2013-05-17 | Valeo Vision | LIGHTING AND / OR SIGNALING DEVICE FOR A MOTOR VEHICLE COMPRISING AN AERATION PIPE |
-
2016
- 2016-03-04 DE DE102016104006.1A patent/DE102016104006A1/en not_active Withdrawn
-
2017
- 2017-02-07 EP EP17155074.2A patent/EP3217075B1/en active Active
- 2017-02-28 JP JP2017037410A patent/JP2017157559A/en active Pending
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Title |
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JP2017157559A (en) | 2017-09-07 |
EP3217075A1 (en) | 2017-09-13 |
DE102016104006A1 (en) | 2017-09-07 |
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