EP3006817B1 - Elongated led lamp - Google Patents
Elongated led lamp Download PDFInfo
- Publication number
- EP3006817B1 EP3006817B1 EP15188332.9A EP15188332A EP3006817B1 EP 3006817 B1 EP3006817 B1 EP 3006817B1 EP 15188332 A EP15188332 A EP 15188332A EP 3006817 B1 EP3006817 B1 EP 3006817B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical element
- longitudinal axis
- lamp according
- led board
- carrier element
- 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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Links
- 230000003287 optical effect Effects 0.000 claims description 131
- 238000005452 bending Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001447 compensatory effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
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- 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
- F21V17/12—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 screwing
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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
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
- F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
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- 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
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- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
- F21V19/0035—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
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- 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
- F21V5/00—Refractors for light sources
- F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
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- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- 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
- F21V17/005—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with keying means, i.e. for enabling the assembling of component parts in distinctive positions, e.g. for preventing wrong mounting
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- 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
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- 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
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the invention relates to an elongated LED light (LED: light emitting diode).
- This lamp has a bar-like support member on which an elongate LED light source is held held to generate a light. Furthermore, an optical element in the form of a lens element for influencing the light is arranged on the carrier element. In such a luminaire is basically desirable to make the optical element and the LED light source and their connections to the support beam manufacturing technology advantageous; Of course, the lamp should also have a suitable reliability and suitable optical properties.
- a luminaire with an elongated housing an LED light source and an elongated pressure element is known.
- the pressing element comprises lenses for influencing the light emitted by the LED light source.
- the pressing element is arranged held on the housing such that it exerts a pressure on the LED light source.
- an LED lamp with an optical element is known, which is held clamped by two elastic arms to a profile body.
- a luminaire is known in which an optical shield is arranged held via a latching connection to a lamp housing.
- an LED board and a reflector element is known; In this case, the LED board is held by means of a latching connection between the reflector element and the rear plate.
- a light rail with a carrier element and a cover strip is known.
- the cover strip is engaged with two webs in receiving grooves, which are formed on the carrier element.
- the invention has for its object to provide a corresponding improved luminaire;
- the luminaire should enable cost-effective production.
- a luminaire which has an elongate carrier element and a, arranged on the carrier element LED light source for generating a light; Furthermore, the luminaire has an elongate optical element, which extends along a longitudinal axis and is arranged parallel to the carrier element, for influencing the light. In this case, the optical element is arranged held under a bending stress standing on the support element.
- the optical element can be positioned particularly reliably positioned relative to the carrier element.
- a particularly precise alignment of the optical element with respect to the LED light source is possible in particular.
- the design here is such that the optical element as such, that is, when it is not yet connected to the carrier element, along the longitudinal axis has a slight curvature whose radius of curvature is greater than three times the extension of the optical element along the longitudinal axis, namely such that the optical element is slightly concave in shape on a side facing the support element in the finished luminaire, the curvature being at least substantially eliminated in the assembled state.
- the luminaire further comprises at least one connecting element for holding the optical element to the carrier element, wherein the at least one connecting element with respect to the longitudinal axis is arranged attacking at a central region of the optical element.
- the bending stress can be particularly suitably effected, in particular when the optical element is held on the carrier element such that the at least one connecting element exerts a force on the optical element which acts perpendicular to the longitudinal axis.
- the at least one connecting element is a screw.
- the luminaire is preferably configured in such a way that the optical element is not fixed in its position at its two end regions formed with respect to the longitudinal axis in a direction of the longitudinal axis relative to the carrier element. In this way, it is possible that in the case of different changes in length of the support member and the optical element due to a temperature variation no undesirable stresses occur.
- the lamp is designed such that the optical element is arranged fixed at its two end portions in a direction transverse to the longitudinal axis relative to the carrier element in its position.
- this makes it possible to achieve a particularly precise alignment of the optical element with respect to the carrier element and also with respect to the LED light source.
- a latching connection is formed between the carrier element and the optical element.
- an advantageous securing of the position of the optical element relative to the carrier element can be effected particularly suitably.
- the optical element is made of a plastic; in particular, it is designed as a plastic injection molded part.
- the LED light source comprises an LED board, as well as LEDs, which are arranged on the LED board, wherein the design is such that the LED board is pressed by the optical element against the support member. hereby is a particularly simple and reliable arrangement of the LED light source allows.
- the LED board is arranged oblong and parallel to the carrier element, wherein the LED board with respect to the longitudinal axis has a central region which is arranged fixed in a position of the longitudinal axis relative to the optical element in its position.
- the LED board with respect to the longitudinal axis has a central region which is arranged fixed in a position of the longitudinal axis relative to the optical element in its position.
- the LED board in its central region has a recess, wherein the optical element is arranged engaging in the recess.
- the optical element is arranged engaging in the recess.
- the luminaire is designed such that the LED board is not fixed in its position in a direction of the longitudinal axis relative to the optical element at its two end regions formed with respect to the longitudinal axis. In this way, it is possible that in case of different changes in length of the LED board and the optical element due to a temperature fluctuation no undesirable voltages occur.
- the lamp is designed such that the LED board is arranged fixed at its two end portions in a direction transverse to the longitudinal axis relative to the optical element in position. This makes it possible in particular to achieve a particularly precise alignment of the optical element with respect to the LED board.
- the optical element preferably has an arm region at one of its two end regions, and the LED circuit board has a further recess in one of its end regions, wherein the arm region is arranged to engage in the further recess.
- the luminaire is particularly suitable if the optical element has a length of more than 30 cm, preferably more than 40 cm.
- Fig. 1 shows a perspective sketch in the manner of an exploded view of an embodiment of a lamp according to the invention.
- the luminaire has an elongate carrier element 1.
- the support element 1 can be designed profile-like.
- the carrier element 1 may be formed as a sheet metal profile part. As a result, the carrier element 1 can be produced particularly inexpensively.
- the lamp has an LED light source 5 for generating a light.
- the LED light source 5 is arranged on the carrier element 1.
- the lamp has an optical element 3 for influencing the light.
- the optical element 3 is generally oblong, so that it extends along a longitudinal axis L. Accordingly, the optical element 3 has two end regions 36, 37 with respect to the longitudinal axis L, as well as a central region 35 located between the two end regions 36, 37.
- the optical element 3 is here with its longitudinal axis L arranged parallel to the longitudinal extent of the support element 1.
- the optical element 3 is made of a plastic.
- it may be designed as a plastic injection molded part.
- FIG. 2 a perspective sketch of the separated optical element 2 is shown.
- Fig. 4 shows a side view of the optical element 3 in a state before connection to the support element. 1
- the design of the luminaire is such that the optical element 3 is under a bending stress when it is connected to the carrier element 1 as intended.
- the design here is such that the optical element 3 as such, that is, when it is not yet connected to the support member 1, has a slight curvature, namely - as in Fig. 4 indicated - such that the optical element 3 is slightly concave on one side, which faces the support member 1 in the ready assembled light, is slightly concave.
- this curvature in a first approximation has a radius of curvature which is greater than three times, preferably greater than five times the extent of the optical element 3 along the longitudinal axis L.
- the optical element 3 can then be used to assemble the luminaire be connected to the support member 1, that the curvature is at least substantially canceled; In this way it can be achieved that the optical element 3 forms a particularly suitable, tight contact with another component of the luminaire, that is, for example, on the carrier element 1 and / or on the LED light source 5.
- a particularly reliable positioning can be achieved of the optical element 3 with respect to the LED light source 5, which is advantageous with respect to the accuracy of the light influencing.
- the design is such that the LED light source 5 has an LED board 2, as well as LEDs 6, which are arranged on the LED board 2; In this case - the LED board 2 is pressed by the optical element 3 against the support element 1 - in the assembled state of the lamp.
- the described slightly curved design of the optical element 3, a corresponding pressing is particularly suitable. In particular, this allows the distance between the LEDs 6 and the optical element 3 is particularly precise to adjust.
- the LED board 2 is elongate, extending parallel to the carrier element 1.
- the luminaire preferably furthermore has at least one connecting element 4 for holding the optical element 3 on the carrier element 1, wherein the at least one connecting element 4 acts with respect to the longitudinal axis L at the central region 35 of the optical element 3 is arranged, in particular within the corresponding middle fifth of the optical element 3.
- the said curvature can be in the course of assembly of the lamp particularly suitable repeal if the optical element 3 is held on the support member 1, that the at least one connecting element 4 is a force on the optical element 3 which acts perpendicular to the longitudinal axis L, ie in particular as in Fig. 1 indicated by an arrow R, which shows the direction of action of the connecting element 4.
- the connecting element 4 is a screw;
- - as in Fig. 1 indicated - two connecting elements 4 and two screws are provided, which are preferably arranged opposite to each other with respect to the longitudinal axis L.
- the optical element 3 has a plurality of lens regions 32, the design being such that in each case one of the LEDs 6 is assigned to one of the lens regions 32.
- the LEDs 6 are arranged along a straight line parallel to the longitudinal axis L, wherein also the lens areas 32 are arranged on a straight line parallel thereto.
- the optical element is designed analogously with respect to the longitudinal axis L on the two opposite sides.
- Fig. 3 is a cross section through the optical element 3, the support member 1 and the LED light source 5 outlined, at the level of the end portion 36 of the optical element 3.
- the lens portions 32 in a section normal to the longitudinal axis L are preferably in one formed in the central region of the optical element 3; as out Fig. 2
- the two connecting elements 4 engage with respect to the longitudinal axis L or the lens regions 32 on the optical element 3 on two opposite sides.
- the optical element 3 has two screw domes or screw channels 39 for guiding the two connecting elements 4, which are accordingly arranged opposite with respect to the lens areas 32.
- further connections which fix the optical element 3 with respect to the carrier element 1 along the longitudinal axis L are not provided;
- the risk of cracking of the screw 39 can be kept very small.
- the luminaire is designed such that the optical element 3 is not fixed in its position at its two end regions 36, 37 in a direction of the longitudinal axis L relative to the carrier element 1, in particular in both directions defined by the longitudinal axis L. Further preferably, the design is such that the optical element 3 is fixed at its two end regions 36, 37 in a direction transverse to the longitudinal axis L relative to the carrier element 1 in position, in particular in those two directions which are transverse to the longitudinal axis L and are perpendicular to the direction of action R of the connecting element 4.
- a latching connection is formed between the carrier element 1 and the optical element 3.
- the optical element 3 for this purpose latching elements 31, which to form the latching connection with shoulder surfaces 11 of the support element 1 interact.
- the latching elements 31 and the shoulder surfaces 11 are configured profile-like, parallel to the longitudinal axis L.
- the optical element 3 on both sides of the lens elements 32 each have seven locking elements 31, a total of fourteen latching elements 31.
- the shoulder surfaces 11 are preferably formed by the profile shape of the support member 1, so that on each side of the lens elements 32 each have a shoulder surface 11 is formed.
- the LED board 2 with respect to the longitudinal axis L on a central region 25 which is arranged fixed in a direction of the longitudinal axis L relative to the optical element 3 in its position, in particular in both, fixed by the longitudinal axis L directions .
- This makes it possible to achieve that a relative movement between the LED board 2 on the one hand and the carrier element 1 or the optical element 3 on the other hand, caused by a temperature change, remains relatively small.
- this makes it possible to achieve that the lens regions 32 only relatively little move relative to their respective associated LEDs 6 along the longitudinal axis, so that the optical effect of the optical element 1 depends very little on the temperature change.
- Fig. 5 shows a perspective sketch around the central region 35 of the optical element 3.
- the optical element 3 a positioning element 33 for the corresponding positive engagement in the recess 29 on.
- the positioning element 33 may be arranged or formed on the screw dome 39.
- the optical element 3 also has a further positioning element 34, which serves for positioning the optical element 3 relative to the carrier element 1.
- the further positioning element 34 is arranged or formed on the screw dome 32.
- the LED board 2 is arranged at its two, formed with respect to the longitudinal axis L end portions 26, 27 in a direction of the longitudinal axis L relative to the optical element 3 is not fixed in position, in particular in the two, defined by the longitudinal axis L. directions.
- the Design such that the LED board 2 is fixed at its two end portions 26, 27 in a direction transverse to the longitudinal axis L relative to the optical element 3 fixed in position.
- the design is particularly such that the LED board 2 is fixed at its two end portions 26, 27 relative to the optical element 3 in those two directions fixed in position, which extend transversely to the longitudinal axis L and thereby perpendicular to the direction of action R of Connecting element 4.
- the optical element 3 at one of its two end portions 36, 37 have an arm portion 38, wherein the LED board 2 in one of its end portions 26, 27 a, in Fig. 1 designated, further recess 28 and the arm portion 38 of the optical element 3, in particular with a corresponding projection 382 is arranged engaging in the further recess 28 of the LED board 2.
- the design is analogous to the corresponding other end region. Since, in the example shown, the design with respect to the lens elements 32 is analogous on both opposite sides, a total of four corresponding arm regions 38 and corresponding further recesses 28 are thus formed.
- a suitable lateral guidance of the LED board 2, ie directed transversely to the longitudinal axis L, can thus be effected, that is, the LED board 2 can not emigrate laterally with respect to the optical element 3 due to the guidance.
- the LED board 2 In the direction of the longitudinal axis L, however, there is a certain amount of play that allows mutual shifting due to temperature fluctuations.
- the LED board 2 is thus fixed in its central region 25, in particular in its corresponding middle fifth, relative to the carrier element 1, at its two end regions 26, 27, however, a certain length compensation can take place.
- the arm area 38 also has an abutment area 381, which is designed for a planar abutment against the LED board 2. This makes it possible to achieve that the optical element 1 presses particularly suitably against the LED board 2 and the latter accordingly holds advantageously in position.
- the optical element 3 - with a suitable optical accuracy of the lamp - can be made comparatively long;
- the length of the optical element 3 may be more than 30 cm, preferably more than 40 cm.
- the LED board 2 is placed on the optical element 3, in such a way that the positioning elements 33 of the optical element 3 engage in the recesses 29 of the LED board 2 as intended ,
- the carrier element 1 is connected to the optical element 3 by means of the latching connection.
- the optical element 3 is then firmly connected to the carrier element 1 by means of the at least one connecting element 4 or by means of the two screws; In this case, the slight curvature of the optical element 3 is released and the optical element 3 is precisely applied to the LED board 2.
- the aforementioned curvature of the optical element 3 can be achieved during the production by means of an injection molding tool by a corresponding control of the cooling.
- the injection molding tool may be formed so that the optical element 3 is initially formed without the curvature, but during the cooling phase, a one-sided stronger cooling takes place and thereby the desired curvature is generated.
- the luminaire according to the invention it is possible to achieve a particularly precise contact of the optical element 3 over its entire length on the LED board 2 or the carrier element 1.
- the carrier element can be designed as a sheet metal profile part and thus relatively inexpensive.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Die Erfindung betrifft eine längliche LED-Leuchte (LED: Licht emittierende Diode).The invention relates to an elongated LED light (LED: light emitting diode).
Die Anmelderin vertreibt unter dem Handelsnamen TECTON ein Lichtbandsystem mit einer länglichen LED-Leuchte. Diese Leuchte weist ein balkenartiges Trägerelement auf, an dem eine längliche LED-Lichtquelle zur Erzeugung eines Lichts gehalten angeordnet ist. Weiterhin ist an dem Trägerelement ein optisches Element in Form eines Linsenelements zur Beeinflussung des Lichts angeordnet. Bei einer solchen Leuchte ist grundsätzlich erwünscht, das optische Element und die LED-Lichtquelle sowie deren Verbindungen zu dem Trägerbalken herstellungstechnisch vorteilhaft zu gestalten; dabei soll die Leuchte selbstverständlich auch eine geeignete Betriebssicherheit und geeignete optische Eigenschaften aufweisen.The applicant sells under the trade name TECTON a lighting system with an elongated LED light. This lamp has a bar-like support member on which an elongate LED light source is held held to generate a light. Furthermore, an optical element in the form of a lens element for influencing the light is arranged on the carrier element. In such a luminaire is basically desirable to make the optical element and the LED light source and their connections to the support beam manufacturing technology advantageous; Of course, the lamp should also have a suitable reliability and suitable optical properties.
Aus der
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Der Erfindung liegt die Aufgabe zugrunde, eine entsprechende verbesserte Leuchte anzugeben; insbesondere soll die Leuchte eine kostengünstige Herstellung ermöglichen.The invention has for its object to provide a corresponding improved luminaire; In particular, the luminaire should enable cost-effective production.
Diese Aufgabe wird gemäß der Erfindung mit dem in dem unabhängigen Anspruch genannten Gegenstand gelöst. Besondere Ausführungsarten der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved according to the invention with the object 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 längliches Trägerelement aufweist sowie eine, an dem Trägerelement angeordnete LED-Lichtquelle zur Erzeugung eines Lichts; weiterhin weist die Leuchte ein längliches, sich entlang einer Längsachse erstreckendes, parallel zu dem Trägerelement angeordnetes optisches Element zur Beeinflussung des Lichts auf. Dabei ist das optische Element unter einer Biegespannung stehend an dem Trägerelement gehalten angeordnet.According to the invention, a luminaire is provided, which has an elongate carrier element and a, arranged on the carrier element LED light source for generating a light; Furthermore, the luminaire has an elongate optical element, which extends along a longitudinal axis and is arranged parallel to the carrier element, for influencing the light. In this case, the optical element is arranged held under a bending stress standing on the support element.
Hierdurch lässt sich das optische Element besonders zuverlässig positioniert gegenüber dem Trägerelement anordnen. Auf diese Weise ist insbesondere auch eine besonders präzise Ausrichtung des optischen Elements gegenüber der LED-Lichtquelle ermöglicht. Beispielsweise lässt sich auf diese Weise verhindern, dass sich aufgrund von Temperaturschwankungen unerwünschte Spalte oder dergleichen zwischen dem optischen Element und der restlichen Leuchte ausbilden.As a result, the optical element can be positioned particularly reliably positioned relative to the carrier element. In this way, a particularly precise alignment of the optical element with respect to the LED light source is possible in particular. For example, it is possible in this way to prevent unwanted gaps or the like from forming between the optical element and the remaining luminaire due to temperature fluctuations.
Die Gestaltung ist hierbei derart, dass das optische Element als solches, also wenn es noch nicht mit dem Trägerelement verbunden ist, entlang der Längsachse eine leichte Krümmung aufweist, deren Krümmungsradius größer ist als das Dreifache der Erstreckung des optischen Elements entlang der Längsachse, und zwar derart, dass das optische Element auf einer Seite, die bei der fertig zusammengebauten Leuchte zu dem Trägerelement weist, leicht konkav geformt ist, wobei die Krümmung im zusammengebauten Zustand zumindest im Wesentlichen aufgehoben ist.The design here is such that the optical element as such, that is, when it is not yet connected to the carrier element, along the longitudinal axis has a slight curvature whose radius of curvature is greater than three times the extension of the optical element along the longitudinal axis, namely such that the optical element is slightly concave in shape on a side facing the support element in the finished luminaire, the curvature being at least substantially eliminated in the assembled state.
Vorzugsweise weist die Leuchte weiterhin wenigstens ein Verbindungselement zur Halterung des optischen Elements an dem Trägerelement auf, wobei das wenigstens eine Verbindungselement mit Bezug auf die Längsachse an einem mittleren Bereich des optischen Elements angreifend angeordnet ist. Auf diese Weise lässt sich die Biegespannung besonders geeignet bewirken, insbesondere wenn das optische Element derart an dem Trägerelement gehalten ist, dass das wenigstens eine Verbindungselement eine Kraft auf das optische Element ausübt, die senkrecht zu der Längsachse wirkt.Preferably, the luminaire further comprises at least one connecting element for holding the optical element to the carrier element, wherein the at least one connecting element with respect to the longitudinal axis is arranged attacking at a central region of the optical element. In this way, the bending stress can be particularly suitably effected, in particular when the optical element is held on the carrier element such that the at least one connecting element exerts a force on the optical element which acts perpendicular to the longitudinal axis.
Herstellungstechnisch vorteilhaft ist dabei das wenigstens eine Verbindungselement eine Schraube.In terms of manufacturing technology, the at least one connecting element is a screw.
Vorzugsweise ist die Leuchte derart gestaltet, dass das optische Element an seinen beiden, mit Bezug auf die Längsachse gebildeten Endbereichen in einer Richtung der Längsachse gegenüber dem Trägerelement in seiner Lage nicht fixiert angeordnet ist. Auf diese Weise ist ermöglicht, dass im Fall von unterschiedlichen Längenänderungen des Trägerelements und des optischen Elements aufgrund einer Temperaturschwankung keine unerwünschten Spannungen auftreten.The luminaire is preferably configured in such a way that the optical element is not fixed in its position at its two end regions formed with respect to the longitudinal axis in a direction of the longitudinal axis relative to the carrier element. In this way, it is possible that in the case of different changes in length of the support member and the optical element due to a temperature variation no undesirable stresses occur.
Vorzugsweise ist die Leuchte derart gestaltet, dass das optische Element an seinen beiden Endbereichen in einer Richtung quer zu der Längsachse gegenüber dem Trägerelement in seiner Lage fixiert angeordnet ist. Hierdurch lässt sich insbesondere eine besonders präzise Ausrichtung des optischen Elements gegenüber dem Trägerelement und auch gegenüber der LED-Lichtquelle erzielen.Preferably, the lamp is designed such that the optical element is arranged fixed at its two end portions in a direction transverse to the longitudinal axis relative to the carrier element in its position. In particular, this makes it possible to achieve a particularly precise alignment of the optical element with respect to the carrier element and also with respect to the LED light source.
Vorzugsweise ist zwischen dem Trägerelement und dem optischen Element eine Rastverbindung gebildet. Auf diese Weise lässt sich eine vorteilhafte Lagesicherung des optischen Elements gegenüber dem Trägerelement besonders geeignet bewirken.Preferably, a latching connection is formed between the carrier element and the optical element. In this way, an advantageous securing of the position of the optical element relative to the carrier element can be effected particularly suitably.
Vorzugsweise besteht das optische Element aus einem Kunststoff; insbesondere ist es als ein Kunststoffspritzgusssteil gestaltet.Preferably, the optical element is made of a plastic; in particular, it is designed as a plastic injection molded part.
Vorzugsweise weist die LED-Lichtquelle eine LED-Platine auf, sowie LEDs, die auf der LED-Platine angeordnet sind, wobei die Gestaltung derart ist, dass die LED-Platine durch das optische Element gegen das Trägerelement gedrückt wird. Hierdurch ist eine besonders einfache und dabei zuverlässige Anordnung der LED-Lichtquelle ermöglicht.Preferably, the LED light source comprises an LED board, as well as LEDs, which are arranged on the LED board, wherein the design is such that the LED board is pressed by the optical element against the support member. hereby is a particularly simple and reliable arrangement of the LED light source allows.
Vorzugsweise ist die LED-Platine länglich und parallel zu dem Trägerelement angeordnet, wobei die LED-Platine mit Bezug auf die Längsachse einen mittleren Bereich aufweist, der in einer Richtung der Längsachse gegenüber dem optischen Element in seiner Lage fixiert angeordnet ist. Auf diese Weise lässt sich erzielen, dass im Fall einer temperaturschwankungsbedingten Längenänderung der LED-Platine relative Verschiebungen gegenüber dem optischen Element und auch gegenüber dem Trägerelement besonders klein bleiben. Dies ist insbesondere vorteilhaft mit Bezug auf eine präzise Ausrichtung des optischen Elements gegenüber der LED-Lichtquelle und somit einer besonders genauen Lichtbeeinflussung.Preferably, the LED board is arranged oblong and parallel to the carrier element, wherein the LED board with respect to the longitudinal axis has a central region which is arranged fixed in a position of the longitudinal axis relative to the optical element in its position. In this way, it can be achieved that, in the case of a temperature variation-related change in length of the LED board, relative displacements with respect to the optical element and also with respect to the carrier element remain particularly small. This is particularly advantageous with respect to a precise alignment of the optical element with respect to the LED light source and thus a particularly precise light influencing.
Vorzugsweise weist die LED-Platine in ihrem mittleren Bereich eine Ausnehmung auf, wobei das optische Element in die Ausnehmung eingreifend angeordnet ist. Auf diese Weise lässt sich eine vorteilhafte Lagesicherung der LED-Platine gegenüber dem optischen Element besonders geeignet bewirken.Preferably, the LED board in its central region has a recess, wherein the optical element is arranged engaging in the recess. In this way, an advantageous position assurance of the LED board with respect to the optical element can cause particularly suitable.
Vorzugsweise ist die Leuchte derart gestaltet, dass die LED-Platine an ihren beiden, mit Bezug auf die Längsachse gebildeten Endbereichen in einer Richtung der Längsachse gegenüber dem optischen Element in ihrer Lage nicht fixiert angeordnet ist. Auf diese Weise ist ermöglicht, dass im Fall von unterschiedlichen Längenänderungen der LED-Platine und des optischen Elements aufgrund einer Temperaturschwankung keine unerwünschten Spannungen auftreten.Preferably, the luminaire is designed such that the LED board is not fixed in its position in a direction of the longitudinal axis relative to the optical element at its two end regions formed with respect to the longitudinal axis. In this way, it is possible that in case of different changes in length of the LED board and the optical element due to a temperature fluctuation no undesirable voltages occur.
Vorzugsweise ist die Leuchte derart gestaltet, dass die LED-Platine an ihren beiden Endbereichen in einer Richtung quer zu der Längsachse gegenüber dem optischen Element in ihrer Lage fixiert angeordnet ist. Hierdurch lässt sich insbesondere eine besonders präzise Ausrichtung des optischen Elements gegenüber der LED-Platine erzielen.Preferably, the lamp is designed such that the LED board is arranged fixed at its two end portions in a direction transverse to the longitudinal axis relative to the optical element in position. This makes it possible in particular to achieve a particularly precise alignment of the optical element with respect to the LED board.
Vorzugsweise weist das optische Element an einem seiner beiden Endbereiche einen Armbereich auf und die LED-Platine in einem ihrer Endbereiche eine weitere Ausnehmung, wobei der Armbereich in die weitere Ausnehmung eingreifend angeordnet ist. Auf diese Weise lässt sich eine vorteilhafte Lagesicherung der LED-Platine gegenüber dem optischen Element besonders geeignet bewirken.The optical element preferably has an arm region at one of its two end regions, and the LED circuit board has a further recess in one of its end regions, wherein the arm region is arranged to engage in the further recess. In this way, an advantageous position assurance of the LED board with respect to the optical element can cause particularly suitable.
Die Leuchte eignet sich besonders, wenn das optische Element eine Länge von mehr als 30 cm aufweist, vorzugsweise mehr als 40 cm.The luminaire is particularly suitable if the optical element has a length of more than 30 cm, preferably more than 40 cm.
Die Erfindung wird im Folgenden anhand eines Ausführungsbeispiels und mit Bezug auf die Zeichnungen näher erläutert. Es zeigen:
- Fig. 1
- eine perspektivische Skizze nach Art einer Explosionsdarstellung zu einer erfindungsgemäßen Leuchte,
- Fig. 2
- eine perspektivische Skizze des separierten optischen Elements,
- Fig. 3
- einen Querschnitt durch das Trägerelement, die LED-Lichtquelle und das optische Element der Leuchte, normal zu der Längsachse,
- Fig. 4
- eine Seitenansicht des optischen Elements, vor Verbindung mit dem Trägerelement,
- Fig. 5
- eine perspektivische Detailskizze um einen mittleren Bereich des optischen Elements und
- Fig. 6
- eine perspektivische Detailskizze eines Endbereichs des optischen Elements.
- Fig. 1
- a perspective sketch in the manner of an exploded view of a lamp according to the invention,
- Fig. 2
- a perspective sketch of the separated optical element,
- Fig. 3
- a cross section through the support element, the LED light source and the optical element of the lamp, normal to the longitudinal axis,
- Fig. 4
- a side view of the optical element, before connection to the carrier element,
- Fig. 5
- a detailed perspective sketch around a central region of the optical element and
- Fig. 6
- a perspective detail sketch of an end portion of the optical element.
Weiterhin weist die Leuchte eine LED-Lichtquelle 5 zur Erzeugung eines Lichts auf. Die LED-Lichtquelle 5 ist an dem Trägerelement 1 angeordnet.Furthermore, the lamp has an LED
Weiterhin weist die Leuchte ein optisches Element 3 zur Beeinflussung des Lichts auf. Das optische Element 3 ist insgesamt länglich, so dass es sich entlang einer Längsachse L erstreckt. Dementsprechend weist das optische Element 3 mit Bezug auf die Längsachse L zwei Endbereiche 36, 37 auf, sowie einen, zwischen den beiden Endbereichen 36, 37 gelegenen mittleren Bereich 35. Dabei ist das optische Element 3 mit seiner Längsachse L parallel zur Längserstreckung des Trägerelements 1 angeordnet.Furthermore, the lamp has an
Herstellungstechnisch vorteilhaft besteht das optische Element 3 aus einem Kunststoff. Beispielsweise kann es als Kunststoffspritzgussteil gestaltet sein.In terms of manufacturing technology, the
In
Die Gestaltung der Leuchte ist derart, dass das optische Element 3 unter einer Biegespannung steht, wenn es wie vorgesehen mit dem Trägerelement 1 verbunden ist. Vorzugsweise ist die Gestaltung hierbei derart, dass das optische Element 3 als solches, also wenn es noch nicht mit dem Trägerelement 1 verbunden ist, eine leichte Krümmung aufweist, und zwar - wie in
Beispielsweise kann vorgesehen sein, dass diese Krümmung in erster Näherung einen Krümmungsradius aufweist, der größer ist als das Dreifache, vorzugsweise größer als das Fünffache der Erstreckung des optischen Elements 3 entlang der Längsachse L. Zum Zusammenbau der Leuchte kann dann das optische Element 3 derart mit dem Trägerelement 1 verbunden werden, dass die Krümmung zumindest im Wesentlichen aufgehoben wird; auf diese Weise lässt sich erzielen, dass das optische Element 3 eine besonders geeignete, dichte Anlage an einem weiteren Bauteil der Leuchte bildet, also beispielsweise an dem Trägerelement 1 und/oder an der LED-Lichtquelle 5. Somit lässt sich auch eine besonders zuverlässige Positionierung des optischen Elements 3 gegenüber der LED-Lichtquelle 5 bewirken, was vorteilhaft mit Bezug auf die Genauigkeit der Lichtbeeinflussung ist.For example, it can be provided that this curvature in a first approximation has a radius of curvature which is greater than three times, preferably greater than five times the extent of the
Beim gezeigten Beispiel ist die Gestaltung derart, dass die LED-Lichtquelle 5 eine LED-Platine 2 aufweist, sowie LEDs 6, die auf der LED-Platine 2 angeordnet sind; dabei wird - im zusammengebauten Zustand der Leuchte - die LED-Platine 2 durch das optische Element 3 gegen das Trägerelement 1 gedrückt. Durch die beschriebene leicht gekrümmte Ausführung des optischen Elements 3 ist ein entsprechendes Andrücken besonders geeignet ermöglicht. Insbesondere lässt sich hierdurch der Abstand zwischen den LEDs 6 und dem optischen Element 3 besonders präzise einstellen. Vorzugsweise ist die LED-Platine 2 länglich, wobei sie sich parallel zu dem Trägerelement 1 erstreckt.In the example shown, the design is such that the
Wie im gezeigten Beispiel der Fall, weist die Leuchte vorzugsweise weiterhin wenigstens ein Verbindungselement 4 zur Halterung des optischen Elements 3 an dem Trägerelement 1 auf, wobei das wenigstens eine Verbindungselement 4 mit Bezug auf die Längsachse L an dem mittleren Bereich 35 des optischen Elements 3 angreifend angeordnet ist, insbesondere innerhalb des entsprechenden mittleren Fünftels des optischen Elements 3. Die genannte Krümmung lässt sich im Zuge des Zusammenbaus der Leuchte besonders geeignet aufheben, wenn das optische Element 3 derart an dem Trägerelement 1 gehalten ist, dass das wenigstens eine Verbindungselement 4 eine Kraft auf das optische Element 3 ausübt, die senkrecht zu der Längsachse L wirkt, also insbesondere so, wie in
Durch die Verwendung einer Schraube lässt sich zudem erzielen, dass das optische Element 3 ohne Zuhilfenahme eines Werkzeugs nicht demontiert werden kann; dies ist vorteilhaft mit Bezug auf die Sicherheit der Leuchte, da die LED-Platine 2 im Allgemeinen Hochvolt-Spannung führen kann.By using a screw can also achieve that the
Beim gezeigten Beispiel weist das optische Element 3 mehrere Linsenbereiche 32 auf, wobei die Gestaltung derart ist, dass jeweils einer der LEDs 6 einer der Linsenbereiche 32 zugeordnet ist. Vorzugsweise sind die LEDs 6 entlang einer Geraden parallel zu der Längsachse L angeordnet, wobei auch die Linsenbereiche 32 auf einer hierzu parallelen Geraden angeordnet sind.In the example shown, the
Beim gezeigten Beispiel ist das optische Element mit Bezug auf die Längsachse L auf den beiden gegenüberliegenden Seiten analog gestaltet. Im Folgenden wird daher insbesondere auf die Gestaltung auf einer Seite der Längsache L eingegangen. In
Beim gezeigten Beispiel weist das optische Element 3 zwei Schraubdome bzw. Schraubkanäle 39 zur Führung der beiden Verbindungselemente 4 auf, die dementsprechend mit Bezug auf die Linsenbereiche 32 gegenüberliegend angeordnet sind. Vorzugsweise sind weitere Verbindungen, die das optische Element 3 gegenüber dem Trägerelement 1 entlang der Längsachse L fixieren, nicht vorgesehen; somit lässt sich die Gefahr einer Rissbildung der Schraubdome 39 besonders klein halten.In the example shown, the
Vorzugsweise ist die Leuchte derart gestaltet, dass das optische Element 3 an seinen beiden Endbereichen 36, 37 in einer Richtung der Längsachse L gegenüber dem Trägerelement 1 in seiner Lage nicht fixiert angeordnet ist, insbesondere in beide, durch die Längsachse L festgelegten Richtungen. Weiterhin vorzugsweise ist die Gestaltung derart, dass das optische Element 3 an seinen beiden Endbereichen 36, 37 in einer Richtung quer zu der Längsachse L gegenüber dem Trägerelement 1 in seiner Lage fixiert angeordnet ist, insbesondere in diejenigen beiden Richtungen, die quer zur Längsachse L und dabei senkrecht zu der Wirkrichtung R des Verbindungselements 4 stehen. Auf diese Weise lässt sich erzielen, dass eine Relativbewegung zwischen den beiden Endbereichen 36, 37 des optischen Elements 3 einerseits und dem Trägerelement 1 bzw. der LED-Platine 2 andererseits in einer Richtung parallel zur Längsachse L möglich ist, quer hierzu jedoch nicht.Preferably, the luminaire is designed such that the
Dies ist vorteilhaft, weil es im Fall einer - beispielsweise betriebsbedingten - Temperaturänderung dazu kommen kann, dass das optische Element 3 und das Trägerelement 1 unterschiedliche Längenänderungen erfahren, so dass grundsätzlich die Gefahr besteht, dass hierdurch ungewollte Spannungen entstehen. Dadurch, dass die Endbereiche 36, 37 des optischen Elements 3 in einer Richtung parallel zur Längsachse L nicht fixiert sind, insbesondere in beide, durch die Längsachse L festgelegten Richtungen, können hier gegebenenfalls entsprechende Ausgleichsbewegungen stattfinden, so dass derartige Spannungen vermieden werden.This is advantageous because, in the case of a temperature change, for example due to operational conditions, it may happen that the
Vorzugsweise ist zwischen dem Trägerelement 1 und dem optischen Element 3 eine Rastverbindung gebildet. Hierdurch lässt sich die beschriebene Lagebeziehung besonders geeignet bewirken. Im gezeigten Beispiel weist das optische Element 3 hierzu Rastelemente 31 auf, die zur Bildung der Rastverbindung mit Schulterflächen 11 des Trägerelements 1 wechselwirken. Die Rastelemente 31 und die Schulterflächen 11 sind dabei profilartig gestaltet, und zwar parallel zu der Längsachse L. Im gezeigten Beispiel weist das optische Element 3 auf beiden Seiten der Linsenelemente 32 jeweils sieben Rastelemente 31 auf, insgesamt also vierzehn Rastelemente 31. Die Schulterflächen 11 sind vorzugsweise durch die Profilform des Trägerelements 1 gebildet, so dass auf jeder Seite der Linsenelemente 32 jeweils eine Schulterfläche 11 gebildet ist.Preferably, a latching connection is formed between the
Im gezeigten Beispiel weist die LED-Platine 2 mit Bezug auf die Längsachse L einen mittleren Bereich 25 auf, der in einer Richtung der Längsachse L gegenüber dem optischen Element 3 in seiner Lage fixiert angeordnet ist, insbesondere in beide, durch die Längsachse L festgelegten Richtungen. Hierdurch lässt sich erzielen, dass eine, durch eine Temperaturänderung hervorgerufene, relative Bewegung zwischen der LED-Platine 2 einerseits und dem Trägerelement 1 bzw. dem optischen Element 3 andererseits verhältnismäßig klein bleibt. Insbesondere lässt sich hierdurch erzielen, dass sich die Linsenbereiche 32 gegenüber ihren jeweils zugeordneten LEDs 6 entlang der Längsachse nur verhältnismäßig wenig verschieben, so dass die optische Wirkung des optischen Elements 1 besonders wenig von der Temperaturänderung abhängt.In the example shown, the
Herstellungstechnisch vorteilhaft kann hierzu vorgesehen sein, dass die LED-Platine 2 in ihrem mittleren Bereich 25 eine Ausnehmung 29 aufweist und das optische Element 1 in diese Ausnehmung 29 eingreifend, insbesondere formschlüssig eingreifend angeordnet ist.
Beim gezeigten Beispiel weist das optische Element 3 außerdem ein weiteres Positionier-Element 34 auf, das zur Positionierung des optischen Elements 3 gegenüber dem Trägerelement 1 dient. Vorzugsweise ist auch das weitere Positionier-Element 34 an dem Schraubdom 32 angeordnet oder ausgebildet.In the example shown, the
Vorzugsweise ist die LED-Platine 2 an ihren beiden, mit Bezug auf die Längsachse L gebildeten Endbereichen 26, 27 in einer Richtung der Längsachse L gegenüber dem optischen Element 3 in ihrer Lage nicht fixiert angeordnet, insbesondere in die beiden, durch die Längsachse L festgelegten Richtungen. Weiterhin vorzugsweise ist die Gestaltung derart, dass die LED-Platine 2 an ihren beiden Endbereichen 26, 27 in einer Richtung quer zu der Längsachse L gegenüber dem optischen Element 3 in ihrer Lage fixiert angeordnet ist. Hierdurch lässt sich - analog zu der Lagesicherung des optischen Elementes 3 gegenüber dem Trägerelement 1 - die LED-Platine 2 entsprechend geeignet gegenüber dem optischen Element 3 anordnen. Entsprechend ist die Gestaltung insbesondere derart, dass die LED-Platine 2 an ihren beiden Endbereichen 26, 27 gegenüber dem optischen Element 3 in diejenigen beiden Richtungen in ihrer Lage fixiert angeordnet ist, die quer zur Längsachse L verlaufen und dabei senkrecht zu der Wirkrichtung R des Verbindungselements 4.Preferably, the
Zur Erzielung dieser Anordnung kann - wie im gezeigten Beispiel der Fall und in
Durch die Armbereiche 38 lässt sich also eine geeignete seitliche, also quer zur Längsachse L gerichtete Führung der LED-Platine 2 bewirken, das heißt durch die Führung kann die LED-Platine 2 gegenüber dem optischen Element 3 nicht seitlich auswandern. In Richtung der Längsachse L hingegen ist ein gewisses Spiel vorhanden, das ein gegenseitiges Verschieben aufgrund von Temperaturschwankungen ermöglicht.By means of the
Die LED-Platine 2 ist also in ihrem mittleren Bereich 25, insbesondere in ihrem entsprechenden mittleren Fünftel, gegenüber dem Trägerelement 1 fixiert, an ihren beiden Endbereichen 26, 27, hingegen kann ein gewisser Längenausgleich stattfinden.The
Beim gezeigten Beispiel weist der Armbereich 38 außerdem einen Anlagebereich 381 auf, der für eine flächige Anlage gegen die LED-Platine 2 ausgebildet ist. Hierdurch lässt sich erzielen, dass das optische Element 1 besonders geeignet gegen die LED-Platine 2 drückt und Letztere dementsprechend vorteilhaft in Position hält.In the example shown, the
Durch die beschriebene Gestaltung lässt sich erzielen, dass das optische Element 3 - bei geeigneter optischer Genauigkeit der Leuchte - vergleichsweise lang gestaltet werden kann; beispielsweise kann die Länge des optischen Elements 3 mehr als 30 cm betragen, vorzugsweise mehr als 40 cm.By the described design can be achieved that the optical element 3 - with a suitable optical accuracy of the lamp - can be made comparatively long; For example, the length of the
Zur Montage kann vorgesehen sein, dass in einem ersten Schritt die LED-Platine 2 auf das optische Element 3 aufgelegt wird, und zwar so, dass die Positionier-Elemente 33 des optischen Elements 3 in die Ausnehmungen 29 der LED-Platine 2 wie vorgesehen eingreifen. In einem darauffolgenden, zweiten Schritt wird das Trägerelement 1 mithilfe der Rastverbindung mit dem optischen Element 3 verbunden. In einem anschließenden, dritten Schritt wird dann das optische Element 3 mithilfe des wenigstens einen Verbindungselements 4 bzw. mithilfe der beiden Schrauben mit dem Trägerelement 1 fest verbunden; dabei wird die leichte Krümmung des optischen Elements 3 aufgehoben und das optische Element 3 legt sich präzise an die LED-Platine 2 an.For mounting can be provided that in a first step, the
Herstellungstechnisch vorteilhaft kann die erwähnte Krümmung des optischen Elements 3 im Zuge der Herstellung mittels Spritzgusswerkzeug durch eine entsprechende Steuerung der Abkühlung erzielt werden. Hierzu kann das Spritzgusswerkzeug so ausgebildet sein, dass das optische Element 3 zunächst ohne die Krümmung gebildet wird, allerdings während der Abkühlungsphase eine einseitig stärkere Kühlung erfolgt und hierdurch die gewünschte Krümmung erzeugt wird.In terms of manufacturing technology, the aforementioned curvature of the
Bei der erfindungsgemäßen Leuchte lässt sich eine besonders präzise Anlage des optischen Elements 3 über seine gesamte Länge hinweg an der LED-Platine 2 bzw. dem Trägerelement 1 erzielen. Somit lässt sich insbesondere bewirken, dass zwischen den Linsenbereichen 32 und den jeweils zugeordneten LEDs 6 ein genau festgelegter Abstand eingehalten ist. Zudem lässt sich das Trägerelement als Blechprofilteil und somit vergleichsweise kostengünstig gestalten.In the case of the luminaire according to the invention, it is possible to achieve a particularly precise contact of the
Claims (15)
- A lamp, having- an elongated carrier element (1)- an LED light source (5) arranged on the carrier element (1) for the generation of a light,- an elongated optical element (3), extending along a longitudinal axis (L) arranged in parallel to the carrier element (1) for influencing the light,wherein the optical element (3) is arranged under a bending stress held stationary on the carrier element (1),
characterized in
that the design in this connection is such that the optical element (3) as such, therefore if it is not yet connected with the carrier element (1), has a slight curvature along the longitudinal axis (L), the radius of curvature of which is larger than three times the extension of the optical element (3) along the longitudinal axis (L), specifically such that the optical element (3) is formed slightly concave on a side, which faces the carrier element when the lamp is fully assembled, wherein the curvature in the assembled state is at least substantially eliminated. - A lamp according to Claim 1,
furthermore having- at least one connection element (4) for holding the optical element (3) on the carrier element (1),wherein the at least one connection element (4) is arranged with respect to the longitudinal axis (L) engaging with a central area (35) of the optical element (3). - A lamp according to Claim 2,
in which the optical element (3) is held on the carrier element (1) in such a manner that the at least one connection element (4) exerts a force on the optical element (3), which acts perpendicular to the longitudinal axis (L). - A lamp according to Claim 2 or 3,
in which the at least one connection element (4) is a screw. - A lamp according to any one of Claims 2 to 4,
which is designed in such a manner that the optical element (3) is arranged not fixed in its position on its two end areas (36, 37) formed with respect to the longitudinal axis (L) in a direction of the longitudinal axis (L) relative to the carrier element (1). - A lamp according to Claim 5,
which is designed in such a manner that the optical element (3) is arranged fixed in its position on its two end areas (36, 37) in a direction transversely to the longitudinal axis (L) relative to the carrier element (1). - A lamp according to any one of the preceding claims,
in which a latching connection is formed between the carrier element (1) and the optical element (3). - A lamp according to any one of the preceding claims,
in which the optical element (3) consists of a plastic, in particular, is designed as a plastic injection molded part. - A lamp according to any one of the preceding claims,
in which the LED light source (5) has a LED board (2), as well as LEDs (6), which are arranged on the LED board (2),
wherein the design is such that the LED board (2) is pressed by the optical element (3) against the carrier element (1). - A lamp according to Claim 9,
in which the LED board (2) is elongated and is arranged in parallel to the carrier element (1),
wherein the LED board (2) has a central area (25) with respect to the longitudinal axis (L), which area is arranged fixed in its position in a direction of the longitudinal axis (L) relative to the optical element (3). - A lamp according to Claim 10,
in which the LED board (2) has a recess (29) in its central area (25) and the optical element (3) is arranged engaging in the recess (29). - A lamp according to Claim 10 or 11,
which is designed in such a manner that the LED board (2) is arranged not fixed in its position on its two end areas (26, 27) formed in respect to the longitudinal axis (L) in a direction of the longitudinal axis (L) relative to the optical element (3). - A lamp according to Claim 12,
which is designed in such a manner that the LED board (2) is arranged fixed in its position on its two end areas (26, 27) in a direction transversely to the longitudinal axis (L) relative to the optical element (3). - A lamp according to Claim 13,
in which the optical element (3) has an arm area (38) on one of its two end areas (36, 37) and the LED board (2) has a further recess (28) in one of its end areas (26, 27), wherein the arm area (38) is arranged engaging in the further recess (28). - A lamp according to any one of the preceding claims,
in which the optical element (3) has a length of more than 30 cm, preferably more than 40 cm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202014104796.4U DE202014104796U1 (en) | 2014-10-07 | 2014-10-07 | Elongated LED light |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3006817A1 EP3006817A1 (en) | 2016-04-13 |
EP3006817B1 true EP3006817B1 (en) | 2018-05-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15188332.9A Active EP3006817B1 (en) | 2014-10-07 | 2015-10-05 | Elongated led lamp |
Country Status (3)
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EP (1) | EP3006817B1 (en) |
AT (1) | AT15106U1 (en) |
DE (1) | DE202014104796U1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3056699B1 (en) * | 2016-09-26 | 2019-06-28 | Valeo Vision | LUMINOUS MODULE AND LUMINOUS DEVICE FOR SELF-MOVING VEHICLE COMPRISING SUCH A LIGHT MODULE |
DE202018101487U1 (en) * | 2018-03-16 | 2018-04-20 | Ridi Leuchten Gmbh | Straight line light |
DE202018101484U1 (en) * | 2018-03-16 | 2018-04-20 | Ridi Leuchten Gmbh | Straight line light |
DE102019111593A1 (en) * | 2019-05-06 | 2020-11-12 | Zumtobel Lighting Gmbh | Elongated lamp |
US11821597B1 (en) * | 2022-06-30 | 2023-11-21 | Elemental LED, Inc. | Linear luminaire |
DE102022124745A1 (en) * | 2022-09-27 | 2024-03-28 | Zumtobel Lighting Gmbh | Optical element with concealing section |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202012102874U1 (en) * | 2012-07-31 | 2013-04-23 | SCHÜCO International KG | light rail |
WO2014005321A1 (en) * | 2012-07-06 | 2014-01-09 | GE Lighting Solutions, LLC | Linear light fixture |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3787145B1 (en) * | 2005-08-30 | 2006-06-21 | 株式会社未来 | Lighting panel and lighting device |
JP4447644B2 (en) * | 2008-07-15 | 2010-04-07 | シーシーエス株式会社 | Light irradiation device |
US20110149548A1 (en) * | 2009-12-22 | 2011-06-23 | Intematix Corporation | Light emitting diode based linear lamps |
DE102010003805A1 (en) * | 2010-04-09 | 2011-10-13 | Zumtobel Lighting Gmbh | Luminaire with LEDs and LEDs associated with the LEDs |
AT511794B1 (en) * | 2011-08-11 | 2014-08-15 | Unique Lights Cee Gmbh | MOUNTING DEVICE FOR A LIGHT |
DE202012100508U1 (en) * | 2012-02-15 | 2013-05-17 | Zumtobel Lighting Gmbh | LED light with light influencing element |
DE202013010406U1 (en) * | 2013-11-19 | 2015-02-20 | Zumtobel Lighting Gmbh | LED light |
-
2014
- 2014-10-07 DE DE202014104796.4U patent/DE202014104796U1/en active Active
- 2014-12-05 AT ATGM418/2014U patent/AT15106U1/en not_active IP Right Cessation
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2015
- 2015-10-05 EP EP15188332.9A patent/EP3006817B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014005321A1 (en) * | 2012-07-06 | 2014-01-09 | GE Lighting Solutions, LLC | Linear light fixture |
DE202012102874U1 (en) * | 2012-07-31 | 2013-04-23 | SCHÜCO International KG | light rail |
Also Published As
Publication number | Publication date |
---|---|
AT15106U1 (en) | 2017-01-15 |
EP3006817A1 (en) | 2016-04-13 |
DE202014104796U1 (en) | 2016-01-11 |
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