DE202011051669U1 - lamp - Google Patents

lamp

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Publication number
DE202011051669U1
DE202011051669U1 DE202011051669U DE202011051669U DE202011051669U1 DE 202011051669 U1 DE202011051669 U1 DE 202011051669U1 DE 202011051669 U DE202011051669 U DE 202011051669U DE 202011051669 U DE202011051669 U DE 202011051669U DE 202011051669 U1 DE202011051669 U1 DE 202011051669U1
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DE
Germany
Prior art keywords
light sources
led light
luminaire
housing
optical
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.)
Active
Application number
DE202011051669U
Other languages
German (de)
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
Publication date
Application filed by Zumtobel Lighting GmbH, Austria filed Critical Zumtobel Lighting GmbH, Austria
Priority to DE202011051669U priority Critical patent/DE202011051669U1/en
Publication of DE202011051669U1 publication Critical patent/DE202011051669U1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/007Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/04Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F21S8/068Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension from a stretched wire
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00Protecting lighting devices from damage
    • F21V15/01Housings, e.g. material or assembling of housing parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening 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
    • F21V17/16Fastening 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/502Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2105/00Planar light sources
    • F21Y2105/10Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

Luminaire with an elongate housing, a plurality of LED light sources (10) arranged in the housing, and lenses associated with at least one part of the LED light sources (10), characterized in that those LED light sources (10) to which a lens is assigned, are arranged in at least two parallel to each other and in the longitudinal direction of the housing extending rows, wherein each of a plurality of lenses are combined to form a one-piece optical element (15) extending in the transverse direction over several, preferably all rows of LED light sources (10) ,

Description

  • The invention relates to a luminaire with an elongate housing and a plurality of LED light sources arranged in the housing.
  • The compact design of modern LED light sources combined with high luminous intensity enables a high degree of creative freedom in the arrangement of the light sources. In particular, this also opens the freedom to realize lights with compact dimensions, especially regarding their height.
  • In order to be able to use the possibilities of the LED light sources as extensively as possible, operating devices are established which, for example, by means of PWM (pulse width modulation) contribute to the control and regulation of the operation of the LED light sources. Due to the size of these operating devices, a particular challenge is still maintaining a compact luminaire design, without limiting the possibilities in the light output.
  • In addition, if rapid adaptability to various lighting requirements is to be provided, this often precludes the development goal of the compact size.
  • The object of the present invention is to provide an elongate luminaire with compact dimensions, which nevertheless is flexibly adaptable to different lighting situations.
  • This object is achieved with the features of the independent claims 1 and 2. Further developments are the subject of the dependent claims.
  • According to the invention, a luminaire is provided with an elongate housing, a plurality of LED light sources arranged in the housing and at least one part of the LED light sources, wherein those LED light sources to which a lens is assigned, in at least two parallel to each other and in the longitudinal direction of the Housing extending rows are arranged, wherein in each case a plurality of the lenses are combined to form a one-piece optical element, which extends in the transverse direction over a plurality of rows of LED light sources.
  • Particularly preferably, the optical element extends in the transverse direction over all rows of the LED light sources.
  • Thus, an extremely compact design of a light emitting unit with multiple LED light sources can be realized, which allows a low height of the lamp and yet designed the possibilities for light delivery diverse. Preferably, the width of the housing transversely exceeds only slightly or not the dimensions of the optical element in this direction.
  • According to another aspect of the invention, there is provided a luminaire having an elongated housing and a plurality of LED light sources disposed in the housing, a first group of the LED light sources being arranged and configured to emit light in a first light emanating direction and a second group of the LED Light sources for emitting light in a second Lichtabstrahlrichtung which is opposite to the first Lichtabstrahlrichtung, is arranged and formed, wherein the two groups of LED light sources are formed independently controllable from each other.
  • The luminaire may for example comprise a corresponding operating device, which is designed to independently control and regulate the operation of the two groups of LED light sources.
  • The luminaire is preferably a pendant luminaire or wall luminaire, with the first group of LED light sources contributing to direct illumination, while the second group of LED light sources is used for indirect illumination.
  • In one development, the housing is each closed with one or more light exit elements, which preferably each form the top surface and the bottom surface of the housing. For indirect lighting but also for direct lighting is also conceivable that the light exit element or the light exit elements is or are designed as a diffuser.
  • The possibilities of designing the light output can be made extremely flexible in the manner described above and also compact dimensions can be realized with the help of independently controllable LED light sources.
  • The possibilities for compact design could be further supported by support elements for the two groups of LED light sources, wherein the support elements delimit a receiving space extending in the longitudinal direction of the luminaire, in which one or more operating devices for the LED light sources are arranged.
  • Thus, the operating devices are arranged in an area between the two LED groups, resulting in a narrow, filigree design of the lamp. For example, the support elements may be formed substantially flat or flat and, for example, parallel to each other be arranged. In particular, the flat sides of the carrier elements can be oriented parallel to one another, wherein the light output of the LED light sources is in each case substantially orthogonal to the flat side of the respective carrier element.
  • Furthermore, it could be provided, for example, that the operating device or the operating devices for the LED light sources are connected to the carrier element for the LED light sources for heat dissipation.
  • In a further development, the housing comprises two elongate outer walls or side parts, which are connected to one another by the carrier element for the LED light sources. The outer walls can contribute accordingly to the heat dissipation of the LED light sources. The elongated outer walls or side parts are therefore preferably made of metal, in particular of an extruded aluminum profile.
  • One or more of the support elements for the LED light sources are particularly preferably formed by elongate profile parts, which each have a central contact area for the LED light sources or corresponding LED boards and two lateral wings, wherein the lateral wings are flat on the outer walls of the housing , in particular on side parts, abut. This training includes the mentioned, substantially planar embodiment of the support elements, which can also extend over the entire length of the lamp.
  • Thus, in turn, the heat dissipation of the LED light sources can be supported via the housing. Particularly preferably, the use of a separate heat sink for the LED light sources can be omitted, so that again compact dimensions of the luminaire can be achieved.
  • In particular, it can be provided that both the outer walls or side parts and the support element for the LED light sources for heat dissipation of the LED light sources are formed.
  • Furthermore, it is also conceivable that the or the operating devices for the LED light sources are connected to the outer walls or side parts of the housing for heat dissipation.
  • Furthermore, the light output can be designed to be particularly flexible and also the length of the lamp can be changed almost arbitrarily if several, the LED light sources associated optical elements are arranged consecutively in the longitudinal direction, wherein the optical elements preferably have identical dimensions. In particular, the optical elements may be the integrally connected lenses already mentioned.
  • Thus, for example, a modular structure of the lamp can be created.
  • The carrier element, and for example also a correspondingly assigned LED board, or the walls of the housing can preferably be designed to be cut to length in corresponding module sizes or can be separated in corresponding module sizes.
  • Said separability can be supported, for example, by the material selection of the housing, the carrier elements or the light exit elements. The housing material or the material of the carrier element is preferably aluminum, and particularly preferably the light exit element is made of PMMA (polymethyl methacrylate) and can be realized as a substantially transparent plate.
  • Assistance can continue to learn the separability in module sizes in that fasteners for the elongated lamp are connected to the front side of the lamp, so that the attachment can be made independently of the change in the longitudinal extent of the lamp.
  • Particularly preferred are multiple, the LED light sources associated optical elements between the support element for the LED light sources and a light exit element for light of the LED light sources without tools fastened and reversibly solvable. The optical elements may in particular be the integrally connected lenses already mentioned.
  • For example, a clamping fixing of the optical elements between the support member and the light exit member may be provided.
  • In addition, the carrier element or the LED board can also have elements for aligning the carrier element or the LED board with the optical element. For example, corresponding guide elements could be realized by guide pins or holes that come into mutual engagement.
  • However, the LED light sources are particularly preferably designed as a guide element or guide elements. For example, it is conceivable that the LED light sources engage in alignment in the optical element. In particular, the optical element may comprise a square recess for the LED light sources, so that when aligned Intervention, a rotational movement of the optical element with respect to the LED light sources is suppressed.
  • Furthermore, it is conceivable that the light exit element can be fastened without tools. For example, the housing or outer walls of the housing, in particular the side parts of the housing, have guide means.
  • Particularly preferably, the guide means of the housing or the side parts include insertion slots into which the light exit element can be inserted, which is particularly preferably designed as a transparent pane in this case.
  • In this way, not only a simple attachment of the light exit element can be achieved but by a flat configuration of the light exit element, which allows a certain flexibility, at the same time, the clamping fixation of the optical element can be supported.
  • The invention will be explained in more detail with reference to the accompanying drawings, wherein like elements in all representations are provided with the same reference numerals. Show it:
  • 1 a partial view of an embodiment of a lamp according to the invention;
  • 2 a perspective view of an embodiment of the lamp in a plan view;
  • 3 a perspective view from below of an embodiment of the lamp; and
  • 4 a further embodiment of a lamp according to the invention in cross section.
  • The embodiments shown below show only pendant lights. However, the invention is not limited to a pendant lamp, in the inventive idea, other types of lights are included; For example, it may be oblong floor lamps, preferably with a substantially horizontal light output, or even elongated wall lights or light bands.
  • 1 shows a partial section of a lamp according to the invention in an exploded view.
  • In the embodiment, it is an elongated pendant lamp, with a, transverse to the longitudinal direction, substantially rectangular, in particular square cross-section, which realizes a particularly compact design in cross-section transverse to the longitudinal extent or longitudinal direction of the lamp. The basic shape of the lamp can therefore be described by a cuboid.
  • For example, there is also a detailed overview of the components of the housing 2 which describes the identical embodiment. The housing in the longitudinal direction of the lamp is characterized by two elongated side panels 30 or outer walls of aluminum and two preferably transparent light exit elements 33 formed as deck or floor surfaces.
  • Transverse to the longitudinal direction, the housing is in each case by end caps 37 completed, both the side panels 30 as well as the light exit elements 33 encompass so that, for example, cutting edges on said surfaces or elements can be covered and the stability of the housing is also increased.
  • As detailed again 1 it can be seen are the end caps 37 with suspension means 42 connected, or form themselves suspension means 42 so that the attachment of the lamp can be independent of housing surfaces or components that run in the longitudinal direction of the lamp. As will become clear in the later, this requires a special advantage in adapting the length of the luminaire to the needs of a user.
  • The suspension means 42 can also be a strain relief 43 for cables for the electrical supply of the lamp.
  • In the housing are several LED light sources 10 arranged, wherein at least a part of the LED light sources 10 Lentils are assigned.
  • In the embodiment, those are LED light sources 10 , which is associated with a lens, arranged in at least two rows parallel to each other and extending in the longitudinal direction of the housing.
  • In order to promote a compact design, several of the lenses are each a one-piece optical element 15 summarized, seen in the transverse direction of the lamp over several rows of LED light sources 10 extends.
  • In the embodiment, the optical element comprises 15 several lenses arranged in a grid or field. Each of the lenses is one of the LED light sources 10 assigned, and the lens is for collimating or limiting the radiation angle of the respective LED light source 10 formed so that the optical element 15 in combination, a glare of the direct light output of the lamp in this case.
  • A corresponding lens of the exemplary embodiment is substantially conically shaped, with a recess serving as a light entry surface for light of the LED light source or LED light sources 10 is disposed in the lens, and moreover one of the LED light sources 10 facing, or in the one of the LED light sources 10 protrudes. The lateral surface of the substantially transparent conical lens forms a reflection surface which determines the emission angle of the respective LED light source assigned to the lens 10 limited or defined. In a further development, it is conceivable that the lateral surfaces of the lens are at least partially mirrored. The arrangement of the LED light sources in a recess of the lenses, thereby causing several advantages. On the one hand, the light coupling into the lenses can thereby be optimized. Furthermore, the overall height of the lamp can be reduced and as is also clear, there are particular advantages in the tool-free attachment of the optical element 15 in the light.
  • The optical element 15 further comprises a flat bottom, which is the housing limiting the light exit element 33 is facing, and connects to this area. Thus, optical distortions are due to an additional air transition between the optical element 15 and light exit element 33 essentially avoided; this can also be supported by an identical choice of material of the two elements. In particular, the flat bottom can be realized for each lens as well; so that the lens or each of the lenses can have a flat light exit side.
  • Furthermore, it follows, as will become clear later, the possibility of attaching the optical element particularly simple tool-free in the housing of the lamp.
  • In the exemplary embodiment, the luminaire has a first group and a second group of the LED light sources 10 on. The first group of LED light sources 10 is for emitting light in a first light emission direction I (see. 2 ) are arranged and formed. Further, the second group of LED light sources 10 for emitting light in a second light emission direction II facing the first direction of light emission I is, arranged and trained.
  • The two groups of LED light sources 10 are still independently controllable.
  • Thus, according to the embodiment, a particularly compact lamp can be created, for example, the direct light using the first group of LED light sources 10 in a first light emission direction I and indirect light using the second group of LED light sources 10 in a second light emission direction II can radiate.
  • The LED light sources 10 or the first group of LED light sources 10 are in identical grid or field size as the optical element 15 arranged on an LED board. According to the embodiment, the LED light sources 10 arranged in two rows in the longitudinal direction of the lamp.
  • The LED board may have preferential pitch elements that allow the LED board to be cut to length without the power supply to the remaining LED light sources 10 is interrupted or impaired.
  • Furthermore, the LED board can be designed for heat dissipation of the LED light sources and, for example, include corresponding metallic heat removal channels or heat pipes or the like.
  • Also, the use of thermal grease to improve heat dissipation may be provided for mounting the LED board.
  • The LED board is in this embodiment with a carrier element 20 thermally conductively connected; the carrier element 20 becomes, how very easy 3 it can be seen, the one to the 1 and 2 identical embodiment shows, formed by a flat carrier plate having side-mounted wings or fins.
  • The described, the optical element 15 facing support element 20 is thus formed by an elongated profile part, each having a central support area for the LED light sources 10 or corresponding LED boards and two side wings 21 having. It is particularly advantageous that the side wings 21 flat on the sides 30 or outer walls of the housing abut.
  • The elongated outer walls or side parts 30 of the housing, are thereby by the support element 20 for the LED light sources 10 connected with each other. In particular, have the side parts designed as profile parts 30 or outer walls guide slots on which a tool-free connection of the support element 20 and the side panels 30 or allow external walls. This will get the wings 21 , or fins of the support element 20 in flat contact with the side panels 30 or the outer walls, so that a relatively large abutment surface is formed, in addition to a secure, rigid connection and the heat transfer from the support element 20 or the LED light sources 10 to the outer walls or side panels 30 the luminaire optimized. A separate heat sink for the LED light sources 10 can thus be omitted, which in turn allows a filigree luminaire design.
  • The outer walls or side parts 30 moreover, also have guide elements that provide a tool-free connection of the light emitting element 33 with the side parts or outer walls 30 enable. In the exemplary embodiment, the guide elements by insertion slots for a flat, substantially transparent light exit element 33 educated. The distance of the guide elements to the carrier element 20 is dimensioned so that the optical element 15 clamped between the light exit element 33 and the LED board or the carrier element 20 is fixed.
  • In the illustrated embodiment is particularly beneficial that the light exit element 33 over a substantially flat surface flush with the optical element 15 connects and preferably has a certain flexibility.
  • For further fixation of the position of the optical element 15 is provided in the embodiment that the LED board or the carrier element 20 Guide elements for connection to, or fixing in position relative to the optical element 15 includes.
  • For this, the LED light sources 10 parallel to the planar extent of the optical element 15 a substantially square cross section. The optical element 15 includes a corresponding recesses into which the LED light sources 10 engage in alignment, so that a rotational movement of the optical element 15 can be substantially suppressed. Particularly useful this can be realized with an unhoused variant of LED chips, which in turn have a low overall height, so that the dimensions of the lamp can be kept compact again in cross section.
  • The optical element 15 thus also includes guide means which are aligned with the LED light sources 10 cooperate, wherein the guide means simultaneously a light entrance surface in the in this embodiment substantially transparent optical element 15 form.
  • In particular, this may be due to the fact that each of the LED light sources 10 Also designed as a guide element, a very secure connection with the optical element 15 will be realized.
  • Furthermore, in the exemplary embodiment the luminaire has a further carrier element 20 for the second group of LED light sources 10 on. This is in turn as a flat carrier sheet or profile part with side wings or fins 21 realized, in the same way with the side panels or outer walls 30 tool-free connectable, and a correspondingly excellent heat dissipation of the LED light sources 10 ensures. The second group of LED light sources 10 is in turn arranged on a substantially identical to the above-described LED board LED board in a row in the longitudinal extent of the lamp, again preferably unpackaged LED chips are used for reasons of height.
  • The carrier elements 20 for the first and second group of LED light sources 10 extend over the entire longitudinal extent of the luminaire and define a longitudinally extending receiving space in which one or more operating devices 60 for the LED light sources 10 are arranged.
  • This results in a particularly compact design of the lamp whose width is not essential to the dimension of the optical element 15 different.
  • Particularly advantageous are the support elements 20 arranged to limit the receiving space parallel to each other.
  • The operating devices 60 are between the support elements 20 arranged and the receiving space for the operating equipment immediately connects to an outer wall or side part 30 of the housing, or is also by an outer wall or side part 30 of the housing limited. This opens up the possibility of operating equipment 60 are in heat-conducting contact with the outer wall or are connected to the outer wall for heat dissipation. For example, could be designed as a profile body side part 30 also brackets for operating devices 60 , or recordings for tool-free attachment of the operating devices have. Preferably, insertion rails could be provided which provide surface contact of the operating devices 60 with the outer wall 30 allow, for example, this 3 particularly clear. In particular, several fastening means of one of the operating devices 60 an outer wall or a side part 30 be facing to form the surface contact.
  • In the embodiment of 1 to 3 a single operating device is provided which is adapted to both the operation of the first group of LED light sources 10 as well as the operation of the second group of LED light sources 10 independently regulated and controlled. In this case, the operating device comprises a plurality of pulse width control units, wherein in each case at least one of the pulse width control units of the first and second group of the LED light sources 10 is assigned, so the first group of LED light sources 10 for example, independently in their light output from the second group of LED light sources 10 can be operated or controlled. In addition, can also in each case an independent control and regulation of the light color of the first and second group of LED light sources 10 with the help of the individual control gear 60 This embodiment may be provided. Furthermore, it is also conceivable that the operating device 60 designed to communicate with a bus system to regulate or control the operation of the lamp.
  • The second group of LED light sources 10 Their light emits essentially in the second light emission direction II from; in the illustrated pendant light so in the direction of a light carrier or a ceiling. For indirect light emission in this embodiment, only the second group of LED light sources 10 used; the indirect light emission takes place in the exemplary embodiment via a substantially flat light exit element forming the cover side of the luminaire 33 , which may preferably be formed as a diffuser. For Ambientebeleuchtung can then be advantageously provided that the light color of the indirect lighting differs from the light color of the direct lighting, in this embodiment, exclusively on the first group of LED light sources 10 he follows.
  • Particularly advantageously, the style means of Ambientebeleuchtung be used when the dimensions and the light output of the lamp are tuned to architectural constraints. In the embodiment of 1 to 3 is intended that the longitudinal extent of the luminaire in partial modular design is customizable.
  • For this purpose, it can be provided that the optical element 15 not - as in the 1 or 2 provided extends over the entire longitudinal extent of the lamp, but rather several, the LED light sources 10 associated optical elements 15 are arranged consecutively in the longitudinal direction.
  • The optical elements 15 In this case, they may preferably have identical dimensions, and thus virtually specify a module length. However, also different dimensions of the optical elements 15 conceivable, like this for example 3 is recognizable, and in the spirit of the invention is also included that a single optical element 15 extends over the entire longitudinal extent of the lamp.
  • Due to the above-described construction can now the housing, in particular the side panels 30 , the light exit elements 33 , as well as the carrier elements 20 easy on one by the one or the optical elements 15 predetermined length are cut to length, so that, for example, with a suitable number of longitudinally extending the lamp sequentially arranged optical elements 15 the length of a table can be essentially reproduced and, for example, the length of the lamp in units between 1 cm and 50 cm, preferably between 5 cm and 20 cm can be adjusted. The optical elements 15 can have the dimensions mentioned in longitudinal extent.
  • To enable a particularly simple cutting, the side parts 30 preferably of aluminum and the light exit elements 33 made of PMMA.
  • A particularly preferred development can be obtained in that the luminaire housing or the carrier element 20 Has space to, for example, in the transverse direction, a further series of LED light sources 10 add. For example, each row of LED light sources 10 to be arranged on a separate board. Advantageously, one of the above-described plurality of optical elements 15 be formed so that it is transversely of a first number of LED light sources 10 is assigned, and in the longitudinal direction of a second number of LED light sources 10 , wherein the first and second number of LED light sources 10 differ. By turning the optical element 15 is then a simple adaptation to a changed number of rows of LED light sources 10 possible in the transverse direction of the luminaire.
  • For example, one of the plurality of optical elements 15 of the embodiment in a grid of "2 × 3" the LED light sources 10 be assigned, so three LED light sources 10 in the longitudinal direction and two LED light sources 10 be assigned in the transverse direction. The arrangement of LED light sources 10 may be provided so that by rotating the optical element 15 especially with the addition of another row of LED light sources 10 , now in a simple way a grid of two LED light sources 10 in the longitudinal direction and three LED light sources 10 in the transverse direction of the optical element 15 assigned. The complete replacement of all optical elements 15 can therefore be obsolete when expanding the lamp, so that an acquisition of a few optical elements 15 the extension of the luminaire, for example, a further series of LED light sources 10 , modularly permitted.
  • The embodiment of 3 shows only several optical elements 15 , which have a mutually identical light emission and are formed by the above-described integrally connected lenses, so that a simple length variation results. However, optical elements can also be used 15 be provided, which have a mutually different light emission.
  • Thus, for example, an accent lighting can be realized, which could particularly illuminate a seating area, for example in the case of a wall light.
  • As described above, in the embodiment of the 1 to 3 be provided, several of the optical elements 15 between the carrier element 20 for the LED light sources 10 and the light exit element 33 to attach without tools.
  • The attachment is provided in particular by clamping in the manner described above, so that thus the possibilities for changing the light output are drastically increased, the appearance and dimensions of the lamp are not changed thereby.
  • The illustrated in cross section embodiment of 4 differs from the embodiment of 1 to 3 in that the carrier element 20 for the first group of LED light sources 10 integral with the side panels 30 the lamp is connected. The assembly of support element 20 and side panels 30 thus forms a heat sink for the LED light sources 10 ,
  • In the embodiment, it is also provided that the operating device 60 deviating from the embodiment of 1 to 3 directly with the carrier element 20 for the first group of LED light sources 10 is in contact, so that special advantages in the heat dissipation and the driving of the LED light sources 10 can result.
  • In the embodiment, the direct contact of the operating device 60 beyond that also for the carrier element 20 for the second group of LED light sources 10 realized, so that the advantages in the control of the LED light sources 10 and continue to improve heat dissipation.
  • Thus, it can be stated that the invention is an elongated luminaire with LED light sources 10 in compact dimensions, which is flexibly adaptable to different lighting requirements.
  • Furthermore, it should be pointed out that within the scope of the invention it is equally conceivable to combine all the features described above or features shown in the figures in any advantageous manner.

Claims (10)

  1. Luminaire with an elongated housing, a plurality of LED light sources arranged in the housing ( 10 ), as well as at least part of the LED light sources ( 10 ) associated lenses, characterized in that those LED light sources ( 10 ), to which a lens is associated, are arranged in at least two rows running parallel to one another and in the longitudinal direction of the housing, in each case a plurality of the lenses being formed into a one-piece optical element ( 15 ), which are seen in the transverse direction over several, preferably all rows of LED light sources ( 10 ).
  2. Luminaire with an elongate housing and a plurality of LED light sources arranged in the housing, characterized in that a first group of the LED light sources ( 10 ) for emitting light in a first light emission direction ( I ) is arranged and formed and a second group of LED light sources ( 10 ) for emitting light in a second light emission direction ( II ), which are directed in the opposite direction to the first light emission direction ( I ), is arranged and formed, wherein the two groups of LED light sources ( 10 ) are formed independently controllable.
  3. Luminaire according to claim 2, characterized in that support elements ( 20 ) for the two groups of LED light sources ( 10 ) define a longitudinally extending receiving space in which operating devices ( 60 ) for the LED light sources ( 10 ) are arranged.
  4. Luminaire according to one of the preceding claims, characterized in that the housing has two elongated outer walls or side parts ( 30 ), which by a support element ( 20 ) for the LED light sources ( 10 ) are interconnected.
  5. Luminaire according to claim 4, characterized in that one or more support elements ( 20 ) for the LED light sources ( 10 ) are formed by elongated profile parts, each having a central support area for the LED light sources ( 10 ) or corresponding LED boards and two side wings ( 21 ), wherein the lateral wings ( 21 ) flat on the side parts ( 30 ) of the housing.
  6. Luminaire according to one of claims 4 or 5, characterized in that both the outer walls or side parts ( 30 ) as well as the carrier element ( 20 ) for heat dissipation from the LED light sources ( 10 ) are formed.
  7. Luminaire according to one of the preceding claims, characterized in that a plurality of the LED light sources ( 10 ) associated optical elements ( 15 ) are arranged consecutively in the longitudinal direction, wherein the optical elements ( 15 ) preferably have identical dimensions.
  8. Luminaire according to one of the preceding claims, characterized in that a plurality of the LED light sources ( 10 ) associated optical elements ( 15 ) between the carrier element ( 20 ) for the LED light sources ( 10 ) and a light exit element ( 33 ) can be fastened without tools.
  9. Luminaire according to claim 8, characterized in that the light exit element ( 33 ) the optical elements ( 15 ) clamped fixed.
  10. Luminaire according to one of the preceding claims 8 or 9, characterized in that the light exit element ( 33 ) can be fastened without tools.
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WO2014153578A1 (en) * 2013-03-28 2014-10-02 Zumtobel Lighting Gmbh Luminaire
DE202014100952U1 (en) * 2014-03-03 2015-06-09 Zumtobel Lighting Gmbh Lamp with bulbs for direct and indirect light output
EP3105499B1 (en) 2014-02-11 2017-11-22 Zumbotel Lighting GmbH Elongate multipartite lens arrangement and luminaire comprising such a lens arrangement
EP3540306A1 (en) * 2018-03-16 2019-09-18 TRILUX GmbH & Co. KG Modular ceiling light
DE202018106141U1 (en) * 2018-10-26 2020-01-28 Rehau Ag + Co lighting device

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AT512127A3 (en) 2018-05-15

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