EP2239498B2 - Covering light with seal lip all the way round - Google Patents

Covering light with seal lip all the way round Download PDF

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Publication number
EP2239498B2
EP2239498B2 EP10158985.1A EP10158985A EP2239498B2 EP 2239498 B2 EP2239498 B2 EP 2239498B2 EP 10158985 A EP10158985 A EP 10158985A EP 2239498 B2 EP2239498 B2 EP 2239498B2
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EP
European Patent Office
Prior art keywords
cover
web
luminaire
sealing lip
housing
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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Application number
EP10158985.1A
Other languages
German (de)
French (fr)
Other versions
EP2239498A1 (en
EP2239498B1 (en
Inventor
Wolfgang Bechter
Gerald Ladstätter
Wolfgang Rüf
Michael Spiegel
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2239498A1 publication Critical patent/EP2239498A1/en
Publication of EP2239498B1 publication Critical patent/EP2239498B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints

Definitions

  • the invention relates to a luminaire which has a luminaire housing, by means of which a light exit region is defined, and a transparent cover, which is arranged in the light exit region, wherein a gap is formed between the cover and the luminaire housing.
  • the said gap is unavoidable from a technical point of view, because the thermal expansion of the lamp housing is usually different from that of the cover. Usually, such a cover made of plastic and a corresponding lamp housing made of metal. In addition, the gap due to manufacturing tolerances of said components luminaire housing and cover can not be practically avoided. The gap is also useful for assembly reasons.
  • From the DE 35 44 306 A1 is a luminaire with a luminaire housing and a translucent cover known. At the edge of the cover a seal is attached along a bar.
  • An auxiliary headlight for vehicles is known in which a sealing ring is arranged in a gap between a housing and a transparent cover.
  • a recessed ceiling light which has a cover with an inwardly directed web on which a seal is applied.
  • the present invention is based on the object to provide a generic lamp in which the external appearance of the lamp is less susceptible to interference.
  • a luminaire which has a luminaire housing, by means of which a light exit area is defined, and a transparent cover, which is arranged in the light exit area.
  • a gap is formed between the cover and the lamp housing.
  • the lamp has an annularly closed sealing lip, which is arranged between the cover and the lamp housing.
  • an inner region of the lamp housing can be sealed to the outside, so that no dirt particles, insects, etc. can penetrate.
  • the sealing lip when viewing the lamp from the outside, that fasteners are visible.
  • the appearance of the lamp in an area around the cover around can thus be particularly even. A shadowing by fasteners or the like can be avoided.
  • the sealing lip that the cover with respect to the surrounding luminaire housing is positioned as centrally as possible, so “averaged out”. This is advantageous not only in terms of the appearance of the lamp, but also in terms of the mechanical support of the cover to the lamp housing.
  • sealing lip crackling noise can occur in conventional connections between the cover and the lamp housing in the event of temperature changes and associated changes in shape of the affected components.
  • the cover has a web which extends circumferentially along the edge of the cover, wherein the sealing lip is arranged on the web or rests against the web.
  • the web stands from the rest of the cover in a direction that faces an inner region of the lamp housing. With reference to a viewing of the luminaire from the outside, the sealing lip can thereby be arranged recessed inwards; this contributes to a positive visual appearance of the luminaire.
  • the web has holding elements for holding the cover to the lamp housing.
  • the holder of the cover can thereby be designed in a simple manner so that it does not affect the appearance of the lamp.
  • the support members are arranged on the web further away from the rest of the cover than the sealing lip so that is prevented by the sealing lip when viewing the lamp from the outside and through the gap, that the support members are visible.
  • the holder of the cover can be formed independently of the sealing lip and thus, for example, make it particularly easy to handle.
  • the web is offset from the outer edge by a small amount inwardly with respect to the rest of the cover, wherein the small dimension is not greater than the width of the sealing lip.
  • This makes it possible to achieve that the web is not visible from the outside through the gap. In addition, this can obscure any attachment area of the sealing lip on the web. Also can be in this way the sealing lip wider and thus particularly soft or flexible designed so that they are when inserting
  • the cover in the luminaire housing can be well deformed and irregularities can compensate particularly well.
  • the sealing lip can thus be formed particularly well in this way so that it can close the dimensions of the gap - which can vary relatively widely along the gap - well and the pressure built up thereby is kept as low as possible. Furthermore, this makes the visible width of the gap can be made particularly small, so that the gap in the outer appearance of the lamp does not dominate too much.
  • the cover on the side opposite the web in a region opposite the web, a structuring, which preferably extends to the nearest edge of the cover.
  • a structuring which preferably extends to the nearest edge of the cover.
  • the lamp further comprises a reflector which is arranged in the interior of the lamp housing, wherein the reflector extends to the web.
  • the reflector can be advantageously fixed to the web.
  • connection between the web and the rest of the cover in at least one area is interrupted by a slot.
  • an optical element for example in the form of a film by sliding through the slot on the inside of the cover.
  • the sealing lip is arranged on the cover, for example on the web, or on the lamp housing.
  • the sealing lip is connected by means of a two-component injection technology with the web or with the lamp housing.
  • the sealing lip is light, preferably light gray.
  • the gap is surrounded by a lamp frame.
  • a particularly uniform transition in the appearance of the lamp from the cover to the outside is possible.
  • the lamp frame has a wall with a surface normal, which forms an angle with the normal of the plane of the light exit region, which is greater than 0 ° and less than 90 °, preferably greater than 10 ° and less than 80 °, for example 45 ° , In this way, it can be achieved that this wall is markedly illuminated by light which passes through the cover to the outside, so that the said transition in appearance can be further made particularly uniform.
  • Fig. 1 an embodiment of a lamp according to the invention is shown.
  • Fig. 2 shows a corresponding cross section through the lamp.
  • the luminaire comprises a luminaire housing 2, by which a light exit region of the luminaire is fixed. In the light exit region, a transparent cover 4 is arranged.
  • the luminaire housing 2 can - as out Fig. 1 emerges - be box-shaped or cuboid-shaped overall, wherein the light exit region is formed by an open side of the box or the cuboid.
  • the luminaire housing 2 can be designed to be installed, so that it represents a luminaire a recessed light.
  • the luminaire is a recessed ceiling luminaire.
  • an inner region I of the lamp housing 2 is delimited by the cover 4 of an outer region A of the lamp.
  • a light source 8 is arranged in the inner region I of the lamp housing 2. Light that can be emitted from the lamp 8, can hit the cover 4, pass through the cover 4 and get into the outer region A.
  • the luminaire may in particular be a recessed luminaire, for example a recessed ceiling luminaire. It can be provided that the luminaire housing 2 is at least mostly installed in a ceiling and in the installed state, the cover 4 is arranged at least substantially in a plane with the surrounding ceiling.
  • the cover 4 may be an optical cover or an optical element which serves to influence light passing through in a targeted manner.
  • the cover 4 structures, for example in the form of microprisms, for influencing the light.
  • the cover 4 may in particular be formed in one piece.
  • a lamp frame 6 may further be formed, which is arranged around the cover 4 around and which is visible from the outside when viewing the lamp.
  • Fig. 3 is the in Fig. 2 marked area enlarged shown sketched.
  • a gap 10 is formed between the cover 4 and the lamp housing 2.
  • This gap 10 is used inter alia, thermally induced, different degrees of shape or size changes of light housing 2 on the one hand and cover 4 on the other hand.
  • the gap 10 is practically unavoidable due to manufacturing tolerances in the said components.
  • the gap 10 may be provided, for example, at the transition between the lamp frame 6 and the rest of the luminaire housing 2.
  • the luminaire also has a sealing lip 12, which is arranged between the cover 4 and the luminaire housing 2.
  • the sealing lip 12 extends along the edge 20 of the cover 4 in an annular closed around. In this way, the inner region I of the luminaire housing 2 can be sealed off from the outer region A by the sealing lip 12. In this way, it is possible to achieve that no dirt particles, flies or the like pass through the gap 10 into the inner region I of the luminaire housing 2, subsequently accumulate on the cover 4 and thus lead to irregularities in the appearance of the cover 4.
  • the cover 4 preferably has a web 14 which extends circumferentially along the edge 20 of the cover 4, wherein the sealing lip 12 is arranged on the web 14 or sealingly abuts against the web 14.
  • the sealing lip 12 is arranged fixed to the web 14 and seals against the lamp housing 2.
  • the luminaire housing 2 has lateral walls, wherein the sealing lip 12 is arranged fixed on the side walls or - as in Fig. 3 shown - sealing against the side walls.
  • the web 14 preferably has only a small height. For example, it can be provided that the extent of the web 14 viewed from the surface of the remaining cover 4 from a maximum of 10% of the extension of the lamp housing 2 in the direction of the normal of the plane of the light exit region.
  • the web 14 is arranged such that it protrudes from the remaining cover 4 in a direction facing the inner region I of the lamp housing 2 out. In the case of a recessed ceiling light, the web 14 can therefore project "upwards" from the remaining cover 4.
  • the sealing lip 12 may be arranged extending horizontally in the first approximation in the case of a ceiling light.
  • the sealing lip 12 may be formed so that it ensures a support of the cover 4 on the lamp housing 2. In this case, it is advantageous to arrange the lamp housing 2 corresponding rear or the like, which cooperate with the sealing lip 12 in the sense of a holder of the cover 4.
  • a latching connection for holding the cover 4 is provided on the lamp housing 2, so that the cover 4 can be easily used on the lamp housing 2.
  • the web 14 has for this purpose mounting elements 16.
  • the support members 16 are arranged on the web 14 such that they are farther away from the rest of the cover 4 than the sealing lip 12. In other words, the support members 16 are arranged on the web 14 with respect to the sealing lip 12 of the remaining cover 4 opposite , In this way it is possible that the sealing lip 12 is not affected by the support members 16 in their effect. In addition, can be in this way - for example by means of a resilient latching connection for holding the cover 4 on the lamp housing 2 - - achieve that the cover 4 can be particularly easy with respect to the handling of the rest of the lamp and also released from this.
  • Fig. 4 is a sketch of another section shown in perspective.
  • the corresponding section passes through a region of the luminaire housing 2, in which holding elements 18 for holding the cover 4 on the luminaire housing 2 are arranged, which cooperate with said holding elements 16, which are arranged on the web 14.
  • holding elements 18 for holding the cover 4 on the luminaire housing 2 are arranged, which cooperate with said holding elements 16, which are arranged on the web 14.
  • support members 18 are spring elements which engage under the housing 4 for supporting the cover 4 projections, which are formed by the support members 16 which are arranged on the web 14.
  • the support elements 18 on the lamp housing 2 can not circulating, but only isolated, so be provided "partially"; it can therefore be formed partial spring closures.
  • the support elements 16, 18 are arranged on the side of the sealing lip 12, which is opposite to the remaining cover 4 and the light exit region. In this way, can be achieved by the sealing lip 12, that the points where the support members 14, 16 are, when viewing the lamp from the outside are practically not visible. This contributes to an overall advantageous appearance of the luminaire.
  • the web 14 with respect to the cover 4 offset from the outer edge 20 of the cover 4 a small amount of a inwardly offset.
  • the small dimension a is not greater than the width of the sealing lip 12. This makes it possible in particular to achieve that the web 14 is not visible from the outside through the gap 10.
  • a corresponding small offset of the web 14 from the edge 20 in the direction of the center of the cover 4 - ie with respect to the cover 4 to "inside" - advantageous if the sealing lip 12 is arranged fixed to the web 14.
  • the sealing lip 12 is connected to the web 14 by means of a two-component injection technology. In this way, a bead-shaped fastening portion 22 may be formed, which is then not visible due to the correspondingly selected offset of the web 14 by the dimension a from the outside.
  • the sealing lip 12 can be designed to be particularly wide and thus particularly soft or flexible, so that it can be well deformed when the cover 4 is inserted into the lamp housing 2.
  • the sealing lip 12 can be formed particularly well in this way so that it can close the dimensions of the gap 10 - which can vary relatively widely along the gap - well and the pressure built up thereby is kept as low as possible. Furthermore, this allows the visible width of the gap 10 to be made particularly small, so that the gap 10 in the outer appearance of the lamp does not dominate too much.
  • the cover 4 advantageously on its, the web 14 opposite side - with reference to the illustration of Fig. 4 that is, on its downwardly facing side - in a region opposite the web 14, a structuring 24; in Fig. 4
  • This structuring 24 is only indicated very schematically or simplified.
  • the structuring 24 may be, for example, prismatic recesses or elevations.
  • the structuring 24 preferably extends to the nearest edge 20 of the cover 4.
  • a region 26 in which the web 14 is connected to the remaining cover 4 can be optically concealed, so that when the luminaire is viewed from the outside of the web 14 as such is practically not recognizable.
  • the structuring 24 may be part of a general structuring of the cover 4.
  • the lamp further comprises a reflector 28 which is arranged in the interior I of the lamp housing 2, wherein the reflector 28 extends to the web 14.
  • the reflector 28 may advantageously be fixed directly to the web 14.
  • it may be attached or clamped to the upper edge of the web 14.
  • the reflector 28 may - as for example Fig. 2 emerges - be designed curved so that it spans the bulb 8.
  • it may be formed by a white film.
  • connection between the web 14 and the remaining cover 4 is interrupted in at least one region by a slot 30.
  • the cover 4 has a partial region 34, for example a central region, which has different optical properties than the remaining region of the cover 4.
  • the partial region 34 can protrude further outwards than the one shown in the figures the remaining areas of the cover 4.
  • the portion 34 may have the optical element 32, for example in the form of a diffusely radiating film, a grid, or the like on the side of the cover 4 facing inward I; the remaining or adjacent areas of the cover 4 may be provided, for example, with a microprism structure.
  • the slot 30 can therefore be arranged accordingly in particular in the region of the protruding portion 34 of the cover 4.
  • the sealing lip 12 may - as mentioned - be fixed to the cover 4, for example, on the web 14 or on the lamp housing 2.
  • the sealing lip 12 is connected by means of a two-component injection technology with the web 14 or with the lamp housing 2.
  • the sealing lip 12 Due to refraction of light on or in the cover 4, a certain small part of the light originating from the luminous means 8 will as a rule reach the sealing lip 12 and illuminate it. A particularly advantageous optical effect can be achieved when the sealing lip 12 is designed bright, preferably light gray. As a result, a particularly inconspicuous transition in the appearance of the lamp between the region of the cover 4 and the surrounding area is made possible.
  • the gap 10 is surrounded by the lamp frame 6.
  • a particularly uniform transition in the appearance of the lamp axles from the cover 4 to the outside is possible.
  • Fig. 3 shows how out Fig. 3 becomes clear, while the lamp frame 6 has a wall 36 with a surface normal N1 , which forms an angle with the normal N2 of the plane of the light exit region, which is greater than 0 ° and less than 90 °, preferably greater than 10 ° and less than 80 °, for example - as in Fig. 3 indicated - 45 °.
  • this "oblique" wall 36 in this sense is significantly illuminated by light that passes through the cover 4 to the outside occurs so that the said transition in the appearance of the luminaire can continue to be designed particularly uniform.
  • the portion 34 of the cover 4 of the slope of the wall 36 can be adapted to extend with respect to the cover 4 further outwardly than the remaining cover 4, for example up to the wall 36; the same applies to the optical element 32.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Description

Die Erfindung betrifft eine Leuchte, die ein Leuchtengehäuse aufweist, durch das ein Lichtaustrittsbereich festgelegt ist, sowie eine transparente Abdeckung, die in dem Lichtaustrittsbereich angeordnet ist, wobei zwischen der Abdeckung und dem Leuchtengehäuse ein Spalt gebildet ist.The invention relates to a luminaire which has a luminaire housing, by means of which a light exit region is defined, and a transparent cover, which is arranged in the light exit region, wherein a gap is formed between the cover and the luminaire housing.

Bei einer derartigen Leuchte besteht das Problem, dass Schmutzpartikel, Insekten oder ähnliches durch den Spalt hindurch gelangen können und sich dann von der Innenseite an der Abdeckung anlagern. Die Lichtabstrahlung von der Abdeckung weist dann üblicherweise unerwünschte Unregelmäßigkeiten auf. Außerdem sind zur Befestigung der Abdeckung an dem Leuchtengehäuse im Allgemeinen Befestigungselemente vorgesehen, die in der Regel durch den Spalt hindurch sichtbar sein können. Auch hierdurch leidet das äußere Erscheinungsbild der Leuchte.In such a lamp, there is the problem that dirt particles, insects or the like can pass through the gap and then attach from the inside to the cover. The light emission from the cover then usually has undesirable irregularities. In addition, fastening elements are generally provided for fastening the cover to the luminaire housing, which fastening elements can generally be visible through the gap. This also suffers the appearance of the lamp.

Es ist in diesem Zusammenhang zu bedenken, dass der genannte Spalt aus technischer Sicht unvermeidbar ist, denn die Wärmeausdehnung des Leuchtengehäuses unterscheidet sich in der Regel von derjenigen der Abdeckung. Üblicherweise besteht eine solche Abdeckung aus Kunststoff und ein entsprechendes Leuchtengehäuse aus Metall. Außerdem kann der Spalt aufgrund von Fertigungstoleranzen der genannten Bauteile Leuchtengehäuse und Abdeckung praktisch nicht vermieden werden kann. Der Spalt ist ferner auch aus Montagegründen sinnvoll.It should be noted in this context that the said gap is unavoidable from a technical point of view, because the thermal expansion of the lamp housing is usually different from that of the cover. Usually, such a cover made of plastic and a corresponding lamp housing made of metal. In addition, the gap due to manufacturing tolerances of said components luminaire housing and cover can not be practically avoided. The gap is also useful for assembly reasons.

Aus der DE 35 44 306 A1 ist eine Leuchte mit einem Leuchtengehäuse und einer lichtdurchlässigen Abdeckung bekannt. Am Rand der Abdeckung ist längs einer Leiste eine Dichtung befestigt.From the DE 35 44 306 A1 is a luminaire with a luminaire housing and a translucent cover known. At the edge of the cover a seal is attached along a bar.

Aus der DE 296 04 137 U1 ist ein Zusatzscheinwerfer für Fahrzeuge bekannt, bei dem in einem Spalt zwischen einem Gehäuse und einer transparenten Abdeckscheibe ein Dichtring angeordnet ist.From the DE 296 04 137 U1 An auxiliary headlight for vehicles is known in which a sealing ring is arranged in a gap between a housing and a transparent cover.

Aus der DE 20 2005 019 174 U1 ist eine Deckeneinbauleuchte bekannt, die eine Abdeckwanne mit einem nach innen gerichteten Steg aufweist, an dem eine Dichtung anliegt.From the DE 20 2005 019 174 U1 is known a recessed ceiling light, which has a cover with an inwardly directed web on which a seal is applied.

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine gattungsgemäße Leuchte anzugeben, bei der das äußere Erscheinungsbild der Leuchte weniger störanfällig ist.The present invention is based on the object to provide a generic lamp in which the external appearance of the lamp is less susceptible to interference.

Diese Aufgabe wird gemäß der Erfindung durch die in dem unabhängigen Anspruch genannte Leuchte gelöst. Besondere Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved according to the invention by the lamp mentioned in the independent claim. Particular embodiments of the invention are indicated in the dependent claims.

Gemäß der Erfindung ist eine Leuchte vorgesehen, die ein Leuchtengehäuse aufweist, durch das ein Lichtaustrittsbereich festgelegt ist, sowie eine transparente Abdeckung, die in dem Lichtaustrittsbereich angeordnet ist. Dabei ist zwischen der Abdeckung und dem Leuchtengehäuse ein Spalt gebildet. Weiterhin weist die Leuchte eine ringförmig geschlossene Dichtlippe auf, die zwischen der Abdeckung und dem Leuchtengehäuse angeordnet ist.According to the invention, a luminaire is provided which has a luminaire housing, by means of which a light exit area is defined, and a transparent cover, which is arranged in the light exit area. In this case, a gap is formed between the cover and the lamp housing. Furthermore, the lamp has an annularly closed sealing lip, which is arranged between the cover and the lamp housing.

Durch die Dichtlippe kann ein innerer Bereich des Leuchtengehäuses nach außen hin abgedichtet werden, so dass keine Schmutzpartikel, Insekten etc. eindringen können. Außerdem lässt sich durch die Dichtlippe bei Betrachtung der Leuchte von außen verhindern, dass Befestigungselemente zu sehen sind. Das äußere Erscheinungsbild der Leuchte in einem Bereich um die Abdeckung herum lässt sich somit besonders ebenmäßig gestalten. Eine Schattenbildung durch Befestigungselemente oder dergleichen lässt sich vermeiden.By the sealing lip, an inner region of the lamp housing can be sealed to the outside, so that no dirt particles, insects, etc. can penetrate. In addition, can be prevented by the sealing lip when viewing the lamp from the outside, that fasteners are visible. The appearance of the lamp in an area around the cover around can thus be particularly even. A shadowing by fasteners or the like can be avoided.

Weiterhin lässt sich durch die Dichtlippe erzielen, dass die Abdeckung mit Bezug auf das umgebende Leuchtengehäuse möglichst zentral, also "umlaufend ausgemittelt" positioniert ist. Dies ist nicht nur hinsichtlich des Erscheinungsbildes der Leuchte vorteilhaft, sondern auch hinsichtlich der mechanischen Halterung der Abdeckung an dem Leuchtengehäuse.Furthermore, it can be achieved by the sealing lip, that the cover with respect to the surrounding luminaire housing is positioned as centrally as possible, so "averaged out". This is advantageous not only in terms of the appearance of the lamp, but also in terms of the mechanical support of the cover to the lamp housing.

Weiterhin lassen sich durch die Dichtlippe Knack-Geräusch verhindern, die bei herkömmlichen Verbindungen zwischen Abdeckung und Leuchtengehäuse im Fall von Temperaturänderungen und damit verbundenen Formänderungen der betroffenen Bauteile auftreten können.Furthermore, can be prevented by the sealing lip crackling noise that can occur in conventional connections between the cover and the lamp housing in the event of temperature changes and associated changes in shape of the affected components.

Außerdem kann durch die Dichtlippe auch eine Halterung der Abdeckung an dem Leuchtengehäuse gewährleistet werden.In addition, it can be ensured by the sealing lip and a holder of the cover to the lamp housing.

Die Abdeckung weist einen Steg auf, der sich umlaufend längs des Rands der Abdeckung erstreckt, wobei die Dichtlippe an dem Steg angeordnet ist oder an dem Steg anliegt. Der Steg steht dabei von der restlichen Abdeckung in eine Richtung ab, die zu einem inneren Bereich des Leuchtengehäuses weist. Mit Bezug auf eine Betrachtung der Leuchte von außen lässt sich die Dichtlippe dadurch nach innen zurückversetzt anordnen; dies trägt zu einem positiven optischen Erscheinungsbild der Leuchte bei.The cover has a web which extends circumferentially along the edge of the cover, wherein the sealing lip is arranged on the web or rests against the web. The web stands from the rest of the cover in a direction that faces an inner region of the lamp housing. With reference to a viewing of the luminaire from the outside, the sealing lip can thereby be arranged recessed inwards; this contributes to a positive visual appearance of the luminaire.

Der Steg weist Halterungselemente zur Halterung der Abdeckung an dem Leuchtengehäuse auf. Die Halterung der Abdeckung lässt sich hierdurch auf einfache Weise so gestalten, dass sie das äußere Erscheinungsbild der Leuchte nicht beeinflusst.The web has holding elements for holding the cover to the lamp housing. The holder of the cover can thereby be designed in a simple manner so that it does not affect the appearance of the lamp.

Die Halterungselemente sind dabei an dem Steg weiter von der restlichen Abdeckung entfernt angeordnet als die Dichtlippe so dass durch die Dichtlippe bei Betrachtung der Leuchte von außen und durch den Spalt hindurch verhindert wird, dass die Halterungselemente zu sehen sind. Auf diese Weise lässt sich die Halterung der Abdeckung unabhängig von der Dichtlippe ausbilden und somit beispielsweise besonders handhabungsfreundlich gestalten.The support members are arranged on the web further away from the rest of the cover than the sealing lip so that is prevented by the sealing lip when viewing the lamp from the outside and through the gap, that the support members are visible. In this way, the holder of the cover can be formed independently of the sealing lip and thus, for example, make it particularly easy to handle.

Der Steg ist mit Bezug auf die restliche Abdeckung vom äußeren Rand um ein kleines Maß nach innen versetzt angeordnet, wobei das kleine Maß nicht größer ist als die Breite der Dichtlippe. Hierdurch lässt sich erzielen, dass der Steg von außen durch den Spalt hindurch nicht sichtbar ist. Außerdem kann hierdurch ein etwaiger Befestigungsbereich der Dichtlippe an dem Steg verdeckt werden. Auch lässt sich auf diese Weise die Dichtlippe breiter und somit besonders weich bzw. flexibel ausgestalten, so dass sie sich beim Einsetzen der Abdeckung in das Leuchtengehäuse gut verformen lässt und Unregelmäßigkeiten besonders gut ausgleichen kann. Die Dichtlippe kann auf diese Weise also besonders gut so ausgebildet werden, dass sie die Maße des Spalts - die längs des Spaltes vergleichsweise stark variieren können - gut schließen kann und der dabei aufgebaute Druck möglichst gering gehalten wird. Weiterhin lässt sich damit die sichtbare Breite des Spalts besonders klein gestalten, so dass der Spalt im äußeren Erscheinungsbild der Leuchte nicht zu stark dominiert.The web is offset from the outer edge by a small amount inwardly with respect to the rest of the cover, wherein the small dimension is not greater than the width of the sealing lip. This makes it possible to achieve that the web is not visible from the outside through the gap. In addition, this can obscure any attachment area of the sealing lip on the web. Also can be in this way the sealing lip wider and thus particularly soft or flexible designed so that they are when inserting The cover in the luminaire housing can be well deformed and irregularities can compensate particularly well. The sealing lip can thus be formed particularly well in this way so that it can close the dimensions of the gap - which can vary relatively widely along the gap - well and the pressure built up thereby is kept as low as possible. Furthermore, this makes the visible width of the gap can be made particularly small, so that the gap in the outer appearance of the lamp does not dominate too much.

Vorteilhaft weist die Abdeckung auf der dem Steg gegenüberliegenden Seite, und zwar in einem dem Steg gegenüberliegenden Bereich eine Strukturierung auf, die sich vorzugsweise bis zum nächstliegenden Rand der Abdeckung erstreckt. Auf diese Weise lässt sich der Bereich, in dem der Steg mit der restlichen Abdeckung verbunden ist, gut optisch kaschieren.Advantageously, the cover on the side opposite the web, in a region opposite the web, a structuring, which preferably extends to the nearest edge of the cover. In this way, the area in which the web is connected to the rest of the cover, good optical conceal.

Vorteilhaft weist die Leuchte weiterhin einen Reflektor auf, der im Inneren des Leuchtengehäuses angeordnet ist, wobei sich der Reflektor bis zu dem Steg erstreckt. Dies trägt dazu bei, dass eine besonders gleichmäßige und wirkungsvolle Abstrahlung erzielt werden kann. Dabei kann der Reflektor vorteilhaft an dem Steg fixiert sein.Advantageously, the lamp further comprises a reflector which is arranged in the interior of the lamp housing, wherein the reflector extends to the web. This contributes to a particularly uniform and effective radiation can be achieved. In this case, the reflector can be advantageously fixed to the web.

Vorteilhaft ist die Verbindung zwischen dem Steg und der restlichen Abdeckung in wenigstens einem Bereich durch einen Schlitz unterbrochen. Hierdurch lässt sich auf einfache Weise ein optisches Element, beispielsweise in Form einer Folie durch Schieben durch den Schlitz hindurch auf der Innenseite der Abdeckung anordnen.Advantageously, the connection between the web and the rest of the cover in at least one area is interrupted by a slot. This makes it easy to arrange an optical element, for example in the form of a film by sliding through the slot on the inside of the cover.

Vorteilhaft ist die Dichtlippe an der Abdeckung, beispielsweise an dem Steg, oder an dem Leuchtengehäuse angeordnet. Beispielsweise kann vorgesehen sein, dass die Dichtlippe mittels einer Zweikomponenten-Spritztechnologie mit dem Steg oder mit dem Leuchtengehäuse verbunden ist.Advantageously, the sealing lip is arranged on the cover, for example on the web, or on the lamp housing. For example, it can be provided that the sealing lip is connected by means of a two-component injection technology with the web or with the lamp housing.

Vorteilhaft ist die Dichtlippe hell, vorzugsweise hellgrau. Hierdurch wird ein besonders unauffälliger Übergang in dem Erscheinungsbild der Leuchte zwischen dem Bereich der Abdeckung und einem umliegenden Bereich ermöglicht.Advantageously, the sealing lip is light, preferably light gray. As a result, a particularly inconspicuous transition in the appearance of the lamp between the region of the cover and a surrounding area is made possible.

Vorteilhaft ist der Spalt von einem Leuchtenrahmen umgeben. Hierdurch wird ein besonders gleichmäßiger Übergang im Erscheinungsbild der Leuchte von der Abdeckung nach außen zu ermöglicht.Advantageously, the gap is surrounded by a lamp frame. As a result, a particularly uniform transition in the appearance of the lamp from the cover to the outside is possible.

Vorteilhaft weist dabei der Leuchtenrahmen eine Wand mit einer Flächennormale auf, die mit der Normalen der Ebene des Lichtaustrittsbereichs einen Winkel einschließt, der größer als 0° und kleiner als 90° ist, vorzugsweise größer als 10° und kleiner als 80°, beispielsweise 45°. Hierdurch lässt sich erzielen, dass diese Wand merklich von Licht beleuchtet wird, das durch die Abdeckung nach außen tritt, so dass der genannte Übergang im Erscheinungsbild weitergehend besonders gleichmäßig gestaltet werden kann.Advantageously, in this case, the lamp frame has a wall with a surface normal, which forms an angle with the normal of the plane of the light exit region, which is greater than 0 ° and less than 90 °, preferably greater than 10 ° and less than 80 °, for example 45 ° , In this way, it can be achieved that this wall is markedly illuminated by light which passes through the cover to the outside, so that the said transition in appearance can be further made particularly uniform.

Die Erfindung wird im Folgenden anhand eines Ausführungsbeispiels und mit Bezug auf die Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine perspektivische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Leuchte,
Fig. 2
eine zu Fig. 1 korrespondierende Querschnitt-Darstellung,
Fig. 3
eine vergrößerte Skizze zu dem in Fig. 2 bezeichneten Ausschnitt,
Fig. 4
eine perspektivische Skizze eines Teils eines weiteren Ausschnitts,
Fig. 5
eine der Fig. 4 entsprechende Querschnitt-Skizze, jedoch eines größeren Ausschnitts und
Fig. 6
eine weitere Querschnitt-Skizze durch einen Bereich, in dem ein Teil der Abdeckung etwas nach außen vorsteht (nicht Teil der Erfindung).
The invention is explained in more detail below with reference to an embodiment and with reference to the drawings. Show it:
Fig. 1
a perspective view of an embodiment of a lamp according to the invention,
Fig. 2
one too Fig. 1 corresponding cross-sectional representation,
Fig. 3
an enlarged sketch of the in Fig. 2 designated section,
Fig. 4
a perspective sketch of part of another detail,
Fig. 5
one of the Fig. 4 corresponding cross-sectional sketch, but a larger section and
Fig. 6
another cross-sectional sketch through an area in which a part of the cover protrudes slightly outward (not part of the invention).

In Fig. 1 ist ein Ausführungsbeispiel einer erfindungsgemäßen Leuchte dargestellt. Fig. 2 zeigt einen entsprechenden Querschnitt durch die Leuchte. Die Leuchte umfasst ein Leuchtengehäuse 2, durch das ein Lichtaustrittsbereich der Leuchte festgelegt ist. In dem Lichtaustrittsbereich ist eine transparente Abdeckung 4 angeordnet.In Fig. 1 an embodiment of a lamp according to the invention is shown. Fig. 2 shows a corresponding cross section through the lamp. The luminaire comprises a luminaire housing 2, by which a light exit region of the luminaire is fixed. In the light exit region, a transparent cover 4 is arranged.

Das Leuchtengehäuse 2 kann - wie aus Fig. 1 hervorgeht - insgesamt kasten- oder quaderförmig ausgebildet sein, wobei der Lichtaustrittsbereich durch eine offene Seite des Kastens bzw. des Quaders gebildet ist. Das Leuchtengehäuse 2 kann dafür vorgesehen sein, eingebaut zu werden, so dass es die Leuchte eine Einbauleuchte darstellt. Beispielsweise kann vorgesehen sein, dass die Leuchte eine Deckeneinbauleuchte ist.The luminaire housing 2 can - as out Fig. 1 emerges - be box-shaped or cuboid-shaped overall, wherein the light exit region is formed by an open side of the box or the cuboid. The luminaire housing 2 can be designed to be installed, so that it represents a luminaire a recessed light. For example, it can be provided that the luminaire is a recessed ceiling luminaire.

Wie in Fig. 2 angedeutet, wird durch die Abdeckung 4 ein innerer Bereich I des Leuchtengehäuses 2 von einem äußeren Bereich A der Leuchte abgegrenzt. Im inneren Bereich I des Leuchtengehäuses 2 ist ein Leuchtmittel 8 angeordnet. Licht, das von dem Leuchtmittel 8 abgestrahlt werden kann, kann auf die Abdeckung 4 treffen, durch die Abdeckung 4 hindurchtreten und in den äußeren Bereich A gelangen.As in Fig. 2 indicated, an inner region I of the lamp housing 2 is delimited by the cover 4 of an outer region A of the lamp. In the inner region I of the lamp housing 2, a light source 8 is arranged. Light that can be emitted from the lamp 8, can hit the cover 4, pass through the cover 4 and get into the outer region A.

Bei der Leuchte kann es sich insbesondere um eine Einbauleuchte, beispielsweise um eine Deckeneinbauleuchte handeln. Dabei kann vorgesehen sein, dass das Leuchtengehäuse 2 zumindest größtenteils in einer Decke eingebaut wird und im eingebauten Zustand die Abdeckung 4 zumindest im Wesentlichen in einer Ebene mit der umgebenden Decke angeordnet ist.The luminaire may in particular be a recessed luminaire, for example a recessed ceiling luminaire. It can be provided that the luminaire housing 2 is at least mostly installed in a ceiling and in the installed state, the cover 4 is arranged at least substantially in a plane with the surrounding ceiling.

Bei der Abdeckung 4 kann es sich um eine optische Abdeckung bzw. um ein optisches Element handeln, das dazu dient hindurchtretendes Licht gezielt zu beeinflussen. Beispielsweise kann die Abdeckung 4 Strukturen, beispielsweise in Form von Mikroprismen, zur Lichtbeeinflussung aufweisen.The cover 4 may be an optical cover or an optical element which serves to influence light passing through in a targeted manner. For example, the cover 4 structures, for example in the form of microprisms, for influencing the light.

Die Abdeckung 4 kann insbesondere einstückig ausgebildet sein.The cover 4 may in particular be formed in one piece.

Durch das Leuchtengehäuse 2 kann weiterhin ein Leuchtenrahmen 6 gebildet sein, der um die Abdeckung 4 herum angeordnet ist und der bei Betrachtung der Leuchte von außen sichtbar ist.Through the lamp housing 2, a lamp frame 6 may further be formed, which is arranged around the cover 4 around and which is visible from the outside when viewing the lamp.

In Fig. 3 ist der in Fig. 2 markierte Bereich vergrößert skizziert dargestellt. Hier ist zu erkennen, dass zwischen der Abdeckung 4 und dem Leuchtengehäuse 2 ein Spalt 10 gebildet ist. Dieser Spalt 10 dient unter anderem dazu, thermisch bedingte, unterschiedlich starke Form- bzw. Größenänderungen von Leuchtengehäuse 2 einerseits und Abdeckung 4 andererseits aufzunehmen. Außerdem ist der Spalt 10 aufgrund von Fertigungstoleranzen bei den genannten Bauteilen praktisch unvermeidlich.In Fig. 3 is the in Fig. 2 marked area enlarged shown sketched. Here it can be seen that between the cover 4 and the lamp housing 2, a gap 10 is formed. This gap 10 is used inter alia, thermally induced, different degrees of shape or size changes of light housing 2 on the one hand and cover 4 on the other hand. In addition, the gap 10 is practically unavoidable due to manufacturing tolerances in the said components.

Der Spalt 10 kann beispielsweise am Übergang zwischen dem Leuchtenrahmen 6 und dem restlichen Leuchtengehäuse 2 vorgesehen sein.The gap 10 may be provided, for example, at the transition between the lamp frame 6 and the rest of the luminaire housing 2.

Die Leuchte weist weiterhin eine Dichtlippe 12 auf, die zwischen der Abdeckung 4 und dem Leuchtengehäuse 2 angeordnet ist. Die Dichtlippe 12 verläuft längs des Rands 20 der Abdeckung 4 ringförmig geschlossen herum. Auf diese Weise kann durch die Dichtlippe 12 der innere Bereich I des Leuchtengehäuses 2 von dem äußeren Bereich A dichtend abgetrennt werden. Hierdurch lässt sich erzielen, dass keine Schmutzpartikel, Fliegen oder dergleichen durch den Spalt 10 hindurch in den inneren Bereich I des Leuchtengehäuses 2 gelangen, sich im Weiteren auf der Abdeckung 4 anlagern und so zu Unregelmäßigkeiten im Erscheinungsbild der Abdeckung 4 führen.The luminaire also has a sealing lip 12, which is arranged between the cover 4 and the luminaire housing 2. The sealing lip 12 extends along the edge 20 of the cover 4 in an annular closed around. In this way, the inner region I of the luminaire housing 2 can be sealed off from the outer region A by the sealing lip 12. In this way, it is possible to achieve that no dirt particles, flies or the like pass through the gap 10 into the inner region I of the luminaire housing 2, subsequently accumulate on the cover 4 and thus lead to irregularities in the appearance of the cover 4.

Die Abdeckung 4 weist vorzugsweise einen Steg 14 auf, der sich umlaufend längs des Rands 20 der Abdeckung 4 erstreckt, wobei die Dichtlippe 12 an dem Steg 14 angeordnet ist oder an dem Steg 14 dichtend anliegt. Im gezeigten Beispiel ist die Dichtlippe 12 an dem Steg 14 fixiert angeordnet und legt sich dichtend an das Leuchtengehäuse 2 an.The cover 4 preferably has a web 14 which extends circumferentially along the edge 20 of the cover 4, wherein the sealing lip 12 is arranged on the web 14 or sealingly abuts against the web 14. In the example shown, the sealing lip 12 is arranged fixed to the web 14 and seals against the lamp housing 2.

Insbesondere kann vorgesehen sein, dass das Leuchtengehäuse 2 seitliche Wände aufweist, wobei die Dichtlippe 12 an den seitlichen Wänden fixiert angeordnet ist oder - wie in Fig. 3 gezeigt - sich an die seitlichen Wände dichtend anlegt.In particular, it can be provided that the luminaire housing 2 has lateral walls, wherein the sealing lip 12 is arranged fixed on the side walls or - as in Fig. 3 shown - sealing against the side walls.

Der Steg 14 weist vorzugsweise nur eine geringe Höhe auf. Beispielswiese kann vorgesehen sein, dass die Erstreckung des Stegs 14 von der Oberfläche der restlichen Abdeckung 4 aus betrachtet maximal 10% der Erstreckung des Leuchtengehäuses 2 in Richtung der Normalen der Ebene des Lichtaustrittsbereichs beträgt.The web 14 preferably has only a small height. For example, it can be provided that the extent of the web 14 viewed from the surface of the remaining cover 4 from a maximum of 10% of the extension of the lamp housing 2 in the direction of the normal of the plane of the light exit region.

Wie aus Fig. 3 erkennbar, ist der Steg 14 derart angeordnet, dass er von der restlichen Abdeckung 4 in eine Richtung absteht, die zu dem inneren Bereich I des Leuchtengehäuses 2 hin weist. Im Fall einer Deckeneinbauleuchte kann der Steg 14 also nach "oben" von der restlichen Abdeckung 4 abstehen. Die Dichtlippe 12 kann im Fall einer Deckeneinbauleuchte in erster Näherung horizontal verlaufend angeordnet sein.How out Fig. 3 recognizable, the web 14 is arranged such that it protrudes from the remaining cover 4 in a direction facing the inner region I of the lamp housing 2 out. In the case of a recessed ceiling light, the web 14 can therefore project "upwards" from the remaining cover 4. The sealing lip 12 may be arranged extending horizontally in the first approximation in the case of a ceiling light.

Die Dichtlippe 12 kann so ausgebildet sein, dass sie eine Halterung der Abdeckung 4 an dem Leuchtengehäuse 2 gewährleistet. In diesem Fall ist es vorteilhaft, am Leuchtengehäuse 2 entsprechende Hinterzüge oder dergleichen anzuordnen, die mit der Dichtlippe 12 im Sinne einer Halterung der Abdeckung 4 zusammenwirken.The sealing lip 12 may be formed so that it ensures a support of the cover 4 on the lamp housing 2. In this case, it is advantageous to arrange the lamp housing 2 corresponding rear or the like, which cooperate with the sealing lip 12 in the sense of a holder of the cover 4.

Zur Halterung der Abdeckung 4 sind an dem Leuchtengehäuse 2 anderweitige Halterungselemente vorgesehen. Vorzugsweise ist eine Rastverbindung zur Halterung der Abdeckung 4 an dem Leuchtengehäuse 2 vorgesehen, so dass die Abdeckung 4 an dem Leuchtengehäuse 2 einfach eingesetzt werden kann. Der Steg 14 weist hierfür Halterungselemente 16 auf.For holding the cover 4 2 other support members are provided on the lamp housing. Preferably, a latching connection for holding the cover 4 is provided on the lamp housing 2, so that the cover 4 can be easily used on the lamp housing 2. The web 14 has for this purpose mounting elements 16.

Die Halterungselemente 16 sind dabei derart an dem Steg 14 angeordnet, dass sie von der restlichen Abdeckung 4 weiter entfernt sind als die Dichtlippe 12. Mit anderen Worten sind die Halterungselemente 16 an dem Steg 14 mit Bezug auf die Dichtlippe 12 der restlichen Abdeckung 4 gegenüberliegend angeordnet. Auf diese Weise ist ermöglicht, dass die Dichtlippe 12 in ihrer Wirkung nicht von den Halterungselementen 16 beeinträchtigt wird. Außerdem lässt sich auf diese Weise - zum Beispiel mithilfe einer federnden Rastverbindung zur Halterung der Abdeckung 4 an dem Leuchtengehäuse 2 - erzielen, dass die Abdeckung 4 besonders einfach mit Bezug auf die Handhabung an der restlichen Leuchte montiert und auch wieder von dieser gelöst werden kann.The support members 16 are arranged on the web 14 such that they are farther away from the rest of the cover 4 than the sealing lip 12. In other words, the support members 16 are arranged on the web 14 with respect to the sealing lip 12 of the remaining cover 4 opposite , In this way it is possible that the sealing lip 12 is not affected by the support members 16 in their effect. In addition, can be in this way - for example by means of a resilient latching connection for holding the cover 4 on the lamp housing 2 - - achieve that the cover 4 can be particularly easy with respect to the handling of the rest of the lamp and also released from this.

In Fig. 4 ist eine Skizze eines weiteren Ausschnitts perspektivisch dargestellt. Der entsprechende Schnitt läuft durch einen Bereich des Leuchtengehäuses 2, in dem Halterungselemente 18 zur Halterung der Abdeckung 4 an dem Leuchtengehäuse 2 angeordnet sind, die mit den genannten Halterungselementen 16 zusammenwirken, die an dem Steg 14 angeordnet sind. Beispielsweise kann - wie in Fig. 4 exemplarisch dargestellt - vorgesehen sein, dass die am Leuchtengehäuse 2 angeordneten Halterungselemente 18 Federelemente sind, die zur Halterung der Abdeckung 4 an dem Leuchtengehäuse 2 Vorsprünge untergreifen, welche durch die Halterungselemente 16 gebildet sind, die am Steg 14 angeordnet sind. Wie an sich bekannt, können die Halterungselemente 18 am Leuchtengehäuse 2 nicht umlaufend, sondern nur vereinzelt, also "partiell" vorgesehen sein; es können also partielle Federverschlüsse gebildet sein.In Fig. 4 is a sketch of another section shown in perspective. The corresponding section passes through a region of the luminaire housing 2, in which holding elements 18 for holding the cover 4 on the luminaire housing 2 are arranged, which cooperate with said holding elements 16, which are arranged on the web 14. For example - as in Fig. 4 shown by way of example - be provided that arranged on the lamp housing 2 support members 18 are spring elements which engage under the housing 4 for supporting the cover 4 projections, which are formed by the support members 16 which are arranged on the web 14. As is known per se, the support elements 18 on the lamp housing 2 can not circulating, but only isolated, so be provided "partially"; it can therefore be formed partial spring closures.

Die Halterungselemente 16, 18 sind auf derjenigen Seite der Dichtlippe 12 angeordnet, die der restlichen Abdeckung 4 bzw. dem Lichtaustrittsbereich gegenüberliegt. Auf diese Weise lässt sich durch die Dichtlippe 12 erzielen, dass die Stellen, an denen sich die Halterungselemente 14, 16 befinden, bei Betrachtung der Leuchte von außen praktisch nicht sichtbar sind. Dies trägt zu einem insgesamt vorteilhaften Erscheinungsbild der Leuchte bei.The support elements 16, 18 are arranged on the side of the sealing lip 12, which is opposite to the remaining cover 4 and the light exit region. In this way, can be achieved by the sealing lip 12, that the points where the support members 14, 16 are, when viewing the lamp from the outside are practically not visible. This contributes to an overall advantageous appearance of the luminaire.

Vorteilhaft ist der Steg 14 mit Bezug auf die Abdeckung 4 vom äußeren Rand 20 der Abdeckung 4 ein kleines Maß a nach innen versetzt angeordnet. Das kleine Maß a ist dabei nicht größer als die Breite der Dichtlippe 12. Hierdurch lässt sich insbesondere erzielen, dass der Steg 14 von außen nicht durch den Spalt 10 hindurch sichtbar ist. Außerdem ist ein entsprechender kleiner Versatz des Stegs 14 vom Rand 20 in Richtung zur Mitte der Abdeckung 4 - also mit Bezug auf die Abdeckung 4 nach "innen" - von Vorteil, wenn die Dichtlippe 12 am Steg 14 fixiert angeordnet ist. Beispielsweise kann vorgesehen sein, dass die Dichtlippe 12 mittels einer Zweikomponenten-Spritztechnologie mit dem Steg 14 verbunden ist. Hierdurch kann ein wulstförmiger Befestigungsbereich 22 gebildet sein, der dann aufgrund des entsprechend gewählten Versatzes des Stegs 14 um das Maß a von außen nicht sichtbar ist.Advantageously, the web 14 with respect to the cover 4 offset from the outer edge 20 of the cover 4 a small amount of a inwardly offset. The small dimension a is not greater than the width of the sealing lip 12. This makes it possible in particular to achieve that the web 14 is not visible from the outside through the gap 10. In addition, a corresponding small offset of the web 14 from the edge 20 in the direction of the center of the cover 4 - ie with respect to the cover 4 to "inside" - advantageous if the sealing lip 12 is arranged fixed to the web 14. For example, it can be provided that the sealing lip 12 is connected to the web 14 by means of a two-component injection technology. In this way, a bead-shaped fastening portion 22 may be formed, which is then not visible due to the correspondingly selected offset of the web 14 by the dimension a from the outside.

Außerdem lässt sich durch den genannten Versatz des Stegs 14 um das kleine Maß a die Dichtlippe 12 besonders breit und somit besonders weich bzw. flexibel ausgestalten, so dass sie sich beim Einsetzen der Abdeckung 4 in das Leuchtengehäuse 2 gut verformen lässt. Die Dichtlippe 12 kann auf diese Weise besonders gut so ausgebildet werden, dass sie die Maße des Spalts 10 - die längs des Spaltes vergleichsweise stark variieren können - gut schließen kann und der dabei aufgebaute Druck möglichst gering gehalten wird. Weiterhin lässt sich damit die sichtbare Breite des Spalts 10 besonders klein gestalten, so dass der Spalt 10 im äußeren Erscheinungsbild der Leuchte nicht zu stark dominiert.In addition, by the said offset of the web 14 by the small amount a, the sealing lip 12 can be designed to be particularly wide and thus particularly soft or flexible, so that it can be well deformed when the cover 4 is inserted into the lamp housing 2. The sealing lip 12 can be formed particularly well in this way so that it can close the dimensions of the gap 10 - which can vary relatively widely along the gap - well and the pressure built up thereby is kept as low as possible. Furthermore, this allows the visible width of the gap 10 to be made particularly small, so that the gap 10 in the outer appearance of the lamp does not dominate too much.

Wie in Fig. 4 gezeigt, weist die Abdeckung 4 vorteilhaft auf ihrer, dem Steg 14 gegenüber liegenden Seite - mit Bezug auf die Darstellung der Fig. 4 also auf ihrer nach unten weisenden Seite - in einem dem Steg 14 gegenüberliegenden Bereich eine Strukturierung 24 auf; in Fig. 4 ist diese Strukturierung 24 lediglich sehr schematisch bzw. vereinfacht angedeutet. Bei der Strukturierung 24 kann es sich beispielsweise um prismenartige Vertiefungen oder Erhöhungen handeln. Vorzugsweise erstreckt sich die Strukturierung 24 bis zum nächstliegenden Rand 20 der Abdeckung 4. Durch das Vorsehen einer solchen Strukturierung 24 lässt sich ein Bereich 26, in dem der Steg 14 mit der restlichen Abdeckung 4 verbunden ist, optisch kaschieren, so dass bei Betrachtung der Leuchte von außen der Steg 14 als solcher praktisch nicht erkennbar ist. Die Strukturierung 24 kann Teil einer allgemeinen Strukturierung der Abdeckung 4 sein.As in Fig. 4 shown, the cover 4 advantageously on its, the web 14 opposite side - with reference to the illustration of Fig. 4 that is, on its downwardly facing side - in a region opposite the web 14, a structuring 24; in Fig. 4 This structuring 24 is only indicated very schematically or simplified. The structuring 24 may be, for example, prismatic recesses or elevations. The structuring 24 preferably extends to the nearest edge 20 of the cover 4. By providing such a structuring 24, a region 26 in which the web 14 is connected to the remaining cover 4 can be optically concealed, so that when the luminaire is viewed from the outside of the web 14 as such is practically not recognizable. The structuring 24 may be part of a general structuring of the cover 4.

Vorteilhaft weist die Leuchte weiterhin einen Reflektor 28 auf, der im Inneren I des Leuchtengehäuses 2 angeordnet ist, wobei sich der Reflektor 28 bis zum Steg 14 erstreckt. Dies trägt dazu bei, dass eine besonders gleichmäßige und wirkungsvolle Abstrahlung erzielt werden kann. Dabei kann der Reflektor 28 vorteilhaft direkt an dem Steg 14 fixiert sein. Beispielsweise kann er an der Oberkante des Stegs 14 befestigt bzw. eingespannt sein. Der Reflektor 28 kann - wie beispielsweise aus Fig. 2 hervorgeht - gekrümmt ausgestaltet sein, so dass er die Leuchtmittel 8 überspannt. Vorzugsweise kann er durch eine weiße Folie gebildet werden.Advantageously, the lamp further comprises a reflector 28 which is arranged in the interior I of the lamp housing 2, wherein the reflector 28 extends to the web 14. This contributes to a particularly uniform and effective radiation can be achieved. In this case, the reflector 28 may advantageously be fixed directly to the web 14. For example, it may be attached or clamped to the upper edge of the web 14. The reflector 28 may - as for example Fig. 2 emerges - be designed curved so that it spans the bulb 8. Preferably, it may be formed by a white film.

Wie aus Fig. 6 ersichtlich, kann vorgesehen sein, dass die Verbindung zwischen dem Steg 14 und der restlichen Abdeckung 4 in wenigstens einem Bereich durch einen Schlitz 30 unterbrochen ist. Hierdurch lässt sich auf einfache Weise ein optisches Element 32, beispielsweise in Form einer Folie, durch seitliches Einschieben durch den Schlitz 30 hindurch auf der Innenseite der Abdeckung 4 anordnen.How out Fig. 6 it can be provided that the connection between the web 14 and the remaining cover 4 is interrupted in at least one region by a slot 30. This makes it easy to arrange an optical element 32, for example in the form of a film, by pushing it laterally through the slot 30 on the inside of the cover 4.

Wie aus den Figuren 1, 2 und 5 hervorgeht, kann vorgesehen sein, dass die Abdeckung 4 einen Teilbereich 34, beispielswiese einen mittleren Bereich aufweist, der andere optische Eigenschaften aufweist, als der restliche Bereich der Abdeckung 4. Der Teilbereich 34 kann - wie in den Figuren gezeigt - weiter nach außen vorstehen als die restlichen Bereiche der Abdeckung 4. Der Teilbereich 34 kann auf der nach Innen I weisenden Seite der Abdeckung 4 das optische Element 32, beispielsweise in Form einer diffus abstrahlenden Folie, eines Rasters, oder dergleichen aufweisen; die restlichen oder angrenzenden Bereiche der Abdeckung 4 können beispielsweise mit einer Mikroprismenstruktur versehen sein. Durch den genannten Schlitz 30 lässt sich erzielen, dass das optische Element 32 zur Montage einfach von der Seite in die Abdeckung 4 eingeschoben werden kann. Der Schlitz 30 kann also dementsprechend insbesondere im Bereich des vorstehenden Teilbereichs 34 der Abdeckung 4 angeordnet sein.Like from the FIGS. 1 . 2 and 5 It can be provided that the cover 4 has a partial region 34, for example a central region, which has different optical properties than the remaining region of the cover 4. The partial region 34 can protrude further outwards than the one shown in the figures the remaining areas of the cover 4. The portion 34 may have the optical element 32, for example in the form of a diffusely radiating film, a grid, or the like on the side of the cover 4 facing inward I; the remaining or adjacent areas of the cover 4 may be provided, for example, with a microprism structure. By means of said slot 30, it can be achieved that the optical element 32 can simply be inserted from the side into the cover 4 for mounting purposes. The slot 30 can therefore be arranged accordingly in particular in the region of the protruding portion 34 of the cover 4.

Die Dichtlippe 12 kann - wie erwähnt - an der Abdeckung 4, beispielsweise an dem Steg 14 oder an dem Leuchtengehäuse 2 fixiert angeordnet sein. Beispielsweise kann vorgesehen sein, dass die Dichtlippe 12 mittels einer Zweikomponenten-Spritztechnologie mit dem Steg 14 oder mit dem Leuchtengehäuse 2 verbunden ist.The sealing lip 12 may - as mentioned - be fixed to the cover 4, for example, on the web 14 or on the lamp housing 2. For example, it can be provided that the sealing lip 12 is connected by means of a two-component injection technology with the web 14 or with the lamp housing 2.

Aufgrund von Lichtbrechungen an bzw. in der Abdeckung 4 wird in der Regel ein gewisser kleiner Teil des von dem Leuchtmittel 8 stammenden Lichts zu der Dichtlippe 12 gelangen und diese erhellen. Ein besonders vorteilhafter optischer Effekt lässt sich dabei erzielen, wenn die Dichtlippe 12 hell gestaltet ist, vorzugsweise hellgrau. Hierdurch wird ein besonders unauffälliger Übergang in dem Erscheinungsbild der Leuchte zwischen dem Bereich der Abdeckung 4 und dem umliegenden Bereich ermöglicht.Due to refraction of light on or in the cover 4, a certain small part of the light originating from the luminous means 8 will as a rule reach the sealing lip 12 and illuminate it. A particularly advantageous optical effect can be achieved when the sealing lip 12 is designed bright, preferably light gray. As a result, a particularly inconspicuous transition in the appearance of the lamp between the region of the cover 4 and the surrounding area is made possible.

Vorteilhaft ist der Spalt 10 von dem Leuchtenrahmen 6 umgeben. Hierdurch wird ein besonders gleichmäßiger Übergang im Erscheinungsbeil der Leuchte von der Abdeckung 4 nach außen zu ermöglicht.Advantageously, the gap 10 is surrounded by the lamp frame 6. As a result, a particularly uniform transition in the appearance of the lamp axles from the cover 4 to the outside is possible.

Wie aus Fig. 3 deutlich wird, weist dabei der Leuchtenrahmen 6 eine Wand 36 mit einer Flächennormale N1 auf, die mit der Normalen N2 der Ebene des Lichtaustrittsbereichs einen Winkel einschließt, der größer als 0° und kleiner als 90° ist, vorzugsweise größer als 10° und kleiner als 80°, beispielsweise - wie in Fig. 3 angedeutet - 45°. Hierdurch lässt sich erzielen, dass diese in diesem Sinne "schräge" Wand 36 merklich von Licht beleuchtet wird, das durch die Abdeckung 4 nach außen tritt, so dass der genannte Übergang im Erscheinungsbild der Leuchte weitergehend besonders gleichmäßig gestaltet werden kann.How out Fig. 3 becomes clear, while the lamp frame 6 has a wall 36 with a surface normal N1 , which forms an angle with the normal N2 of the plane of the light exit region, which is greater than 0 ° and less than 90 °, preferably greater than 10 ° and less than 80 °, for example - as in Fig. 3 indicated - 45 °. In this way, it can be achieved that this "oblique" wall 36 in this sense is significantly illuminated by light that passes through the cover 4 to the outside occurs so that the said transition in the appearance of the luminaire can continue to be designed particularly uniform.

Wie aus Fig. 6 ersichtlich, kann sich der Teilbereich 34 der Abdeckung 4 der Schräge der Wand 36 anpassend mit Bezug auf die Abdeckung 4 weiter nach außen hin erstrecken als die restliche Abdeckung 4, beispielsweise bis zu der Wand 36; entsprechendes gilt für das optische Element 32.How out Fig. 6 As can be seen, the portion 34 of the cover 4 of the slope of the wall 36 can be adapted to extend with respect to the cover 4 further outwardly than the remaining cover 4, for example up to the wall 36; the same applies to the optical element 32.

Claims (11)

  1. A luminaire having
    - a luminaire housing (2) by means of which a light-exit region is defined, and
    - a transparent cover (4) which is arranged in the light-exit region, wherein a gap (10) is formed between the cover (4) and the luminaire housing (2), and
    - an annularly closed sealing lip (12) which is arranged between the cover (4) and the luminaire housing (2),
    wherein the cover (4) has a web (14) which extends circumferentially along the edge (20) of the cover (4), wherein the sealing lip (12) is arranged on the web (14) or rests against the web (14),
    wherein the web (14) protrudes from the rest of the cover (4) in a direction pointing to an inner region (I) of the luminaire housing (2),
    wherein the web (14) has holding elements (16) to hold the cover (4) on the luminaire housing (2), and wherein the holding elements (16) on the web (14) are arranged further away from the rest of the cover (4) than the sealing lip (12), to prevent that the holding elements (16) are visible through the sealing lip (12) looking at the lamp from outside and through the gap (10).
  2. A luminaire according to claim 1,
    in which the web (14), in relation to the rest of the cover (4), is arranged so as to be inwardly offset from the outer edge (20) by a small measure (a), wherein the small measure (a) is not greater than the width of the sealing lip (12).
  3. A luminaire according to one of the preceding claims, in which the cover (4) has on the side lying opposite the web (14), that is, in a region lying opposite the web (14), a structuring (24) preferably extending as far as the nearest edge (20) of the cover (4).
  4. A luminaire according to one of the preceding claims, having, furthermore, a reflector (28) that is arranged in the interior (I) of the luminaire housing (2), wherein the reflector (28) extends as far as the web (14).
  5. A luminaire according to claim 4,
    in which the reflector (28) is fixed on the web (14).
  6. A luminaire according to one of the preceding claims, in which the connection between the web (14) and the rest of the cover (4) is interrupted by a slot (30) in at least one region.
  7. A luminaire according to one of the preceding claims, in which the sealing lip (12) is arranged in a fixed manner on the cover (4) or on the luminaire housing (2).
  8. A luminaire according to claim 7,
    in which the sealing lip (12) is connected to the web (14) or to the luminaire housing (2) by means of two-component injection-moulding technology.
  9. A luminaire according to one of the preceding claims, in which the sealing lip (12) is light, preferably light grey.
  10. A luminaire according to one of the preceding claims, in which the gap (10) is surrounded by a luminaire frame (6).
  11. A luminaire according to claim 10,
    in which the luminaire frame (6) has a wall (36) with a surface normal (N1) which with the normal (N2) of the plane of the light-exit region encloses an angle that is greater than 0° and smaller than 90°, preferably greater than 10° and smaller than 80°, for example 45°.
EP10158985.1A 2009-04-06 2010-04-01 Covering light with seal lip all the way round Active EP2239498B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009016566A DE102009016566A1 (en) 2009-04-06 2009-04-06 Cover light with circumferential sealing lip

Publications (3)

Publication Number Publication Date
EP2239498A1 EP2239498A1 (en) 2010-10-13
EP2239498B1 EP2239498B1 (en) 2012-11-07
EP2239498B2 true EP2239498B2 (en) 2019-08-07

Family

ID=42235358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10158985.1A Active EP2239498B2 (en) 2009-04-06 2010-04-01 Covering light with seal lip all the way round

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Country Link
EP (1) EP2239498B2 (en)
DE (1) DE102009016566A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012109265B4 (en) 2012-09-28 2016-02-25 Elkamet Kunststofftechnik Gmbh Lamp and a component for it
DE202013101775U1 (en) * 2013-04-24 2014-07-28 Zumtobel Lighting Gmbh Luminaire cover for an elongated lighting arrangement
DE202014101961U1 (en) * 2014-04-25 2015-07-28 Zumtobel Lighting Gmbh Luminaire device with a lamp housing and a releasably attachable to the lamp housing light cover
DE202016103785U1 (en) * 2016-07-14 2017-10-18 Zumtobel Lighting Gmbh lamp

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CH391100A (en) † 1960-04-28 1965-04-30 Schneider & Co Dr Ing Device for holding an elastic and translucent cover on a recessed or surface-mounted ceiling light
DE1539565A1 (en) † 1966-12-16 1969-11-06 Siemens Ag Luminaire with a hinge-like connection between the upper part of the housing and the lower part of the housing
DE29906009U1 (en) † 1999-04-01 1999-07-08 Trilux-Lenze Gmbh + Co Kg, 59759 Arnsberg Moisture-proof luminaire
WO2005050087A1 (en) † 2003-11-21 2005-06-02 Zumtobel Staff Gmbh Lamp comprising a transparent light-emerging element

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Publication number Priority date Publication date Assignee Title
US4054792A (en) * 1976-02-26 1977-10-18 Dominion Auto Accessories Limited Lamp
DE3115510C2 (en) * 1981-04-16 1983-01-13 Siemens AG, 1000 Berlin und 8000 München Device for reducing the reflection of extraneous light in light signal generators as well as signal generator equipped with this device
AT380940B (en) * 1984-12-21 1986-07-25 Zumtobel Ag LIGHT WITH A LIGHT HOUSING AND A TRANSLUCENT COVER
DE9015636U1 (en) * 1990-11-15 1991-01-31 Schydlo, Martin T., 4030 Ratingen Recessed light
DE29601240U1 (en) * 1996-01-25 1996-03-14 MAN Gutehoffnungshütte AG, 46145 Oberhausen Hydraulically actuated locking element with two locking bolts that can be moved axially on one axis
DE29604137U1 (en) 1996-03-06 1997-07-03 Robert Bosch Gmbh, 70469 Stuttgart Additional headlights for vehicles
DE20015359U1 (en) * 2000-09-06 2000-11-16 Baedje K H Meteor Gummiwerke Sealing profile for a lamp
DE202005019174U1 (en) 2005-12-08 2006-02-16 Siteco Beleuchtungstechnik Gmbh Built-in top light for fixing in a built-in sector with illumination body mounted in a sector with a covering container generally useful for illumination has two composite devices for facilitating assembly and disassembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH391100A (en) † 1960-04-28 1965-04-30 Schneider & Co Dr Ing Device for holding an elastic and translucent cover on a recessed or surface-mounted ceiling light
DE1539565A1 (en) † 1966-12-16 1969-11-06 Siemens Ag Luminaire with a hinge-like connection between the upper part of the housing and the lower part of the housing
DE29906009U1 (en) † 1999-04-01 1999-07-08 Trilux-Lenze Gmbh + Co Kg, 59759 Arnsberg Moisture-proof luminaire
WO2005050087A1 (en) † 2003-11-21 2005-06-02 Zumtobel Staff Gmbh Lamp comprising a transparent light-emerging element

Also Published As

Publication number Publication date
DE102009016566A1 (en) 2010-10-07
EP2239498A1 (en) 2010-10-13
EP2239498B1 (en) 2012-11-07

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