DE102011081459B4 - Illumination arrangement with multiple far fields - Google Patents

Illumination arrangement with multiple far fields

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Publication number
DE102011081459B4
DE102011081459B4 DE102011081459.0A DE102011081459A DE102011081459B4 DE 102011081459 B4 DE102011081459 B4 DE 102011081459B4 DE 102011081459 A DE102011081459 A DE 102011081459A DE 102011081459 B4 DE102011081459 B4 DE 102011081459B4
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Germany
Prior art keywords
light
light module
reflector
module
according
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Expired - Fee Related
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DE102011081459.0A
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German (de)
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DE102011081459A1 (en
Inventor
Ralph Wirth
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Osram GmbH
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Osram GmbH
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Publication of DE102011081459A1 publication Critical patent/DE102011081459A1/en
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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
    • F21V7/00Reflectors for light sources
    • F21V7/0008Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • F21V7/06Optical design with parabolic curvature
    • 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
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02Combinations of only two kinds of 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

A light assembly (100, 300, 400) comprising: a reflector (102) constructed symmetrically; a light module device comprising: a first light module (104) and a second light module (106), wherein the first light module is arranged such that it irradiates light into the reflector during operation, and wherein the second light module (106) is physically connected to the first light module and is arranged such that a light emission during operation takes place in a direction opposite to a light emission direction of the first light module (104) direction, wherein the light module means along an axis of symmetry (116) or in a plane of symmetry (116 ) of the symmetrical reflector (102) and the first light module (104) has two partial light modules (404, 406), between which a first heat dissipation structure (402) is provided, along an axis of symmetry (116) or in a plane of symmetry ( 116) is arranged so that light of each of the partial light modules (404, 406) illuminates different areas of the reflector (102) and where in the luminous arrangement further comprises a third light module (112) which is arranged on the outside of the reflector (102) and is arranged for the emission of light primarily perpendicular to the light emission direction of the first light module (104).

Description

  • The invention relates to a lighting arrangement, for example a lighting arrangement with multiple far fields.
  • Today, more and more requirements are placed on lamps or lights. In addition to the efforts to provide more efficient and economical lamps and lights, lamps and luminaires with novel lighting functions are also becoming increasingly important.
  • For example, a lamp or light in addition to the usual purpose to illuminate premises also serve to emit special light components, which, for example, have a targeted heating of rooms result or can increase human well-being. This can be achieved by integrating the various light sources required to produce the respective light component into a lamp housing and thus providing a lamp or luminaire which is easy for the user to use.
  • For example, a lighting device for producing color-changing light is known from the prior art (US Pat. US 5,749,646 ). The lighting device has a symmetrical reflector and emits light in opposite directions.
  • US 2009/0002986 A1 and US 2005/0243552 A1 also each show a lighting device with a symmetrical reflector, wherein the light emission takes place in opposite directions.
  • However, lighting applications of any kind would also be interesting lamps that are flexible in that they allow, for example, an optimal illumination of different areas, the different illumination modes used for this purpose are provided by a single lamp assembly and a long life is guaranteed.
  • It is a light assembly (can also be referred to as a lamp or light) are provided, which has a reflector and a light module device, wherein the light module device comprises a first light module and a second light module, wherein the first light module is arranged such that it is in operation light in irradiates the reflector, and wherein the second light module is physically connected to the first light module and is arranged such that a light emission takes place during operation in a light emission direction of the first light module at least substantially opposite direction.
  • Each of the provided light modules of the lighting arrangement can be set up individually with respect to, for example, the wavelength and / or light intensity and / or the direction and / or the opening angle of the emitted light. As a result, for example, a strong forward (far) light field can be provided by means of a first light module and a second and, as described later, optional third far field from the second and optional further light module. Consequently, it is thus possible to provide a plurality of far fields, that is to say regions which are illuminated differently with light in a geometrically and / or color and / or light intensity manner at a certain distance from the luminous arrangement. In this case, each of the light modules can realize another far field, light modules can also be controlled together in any desired way, ie operated simultaneously and matched to one another in terms of operating parameters such as brightness in order to generate further far fields. The far fields belonging to the respective light modules can be free of overlapping areas with one another or they can overlap. To provide the different far fields, the light modules are used in the lighting arrangement, which are arranged in a special manner, described in more detail below. For example, by means of a light module of the lighting arrangement diffuse room light and with another light module a far field with a Batwing (bat wing) shape can be generated. The first light module and the second light module are arranged, for example, so that they emit light in opposite directions. The first light module is facing with its light-emitting surface of the reflector surface and illuminates it. In other words, the first light module with its rear side (ie with the surface which emits no light) faces the exit surface of the light from the lighting arrangement. The second light module is facing with its light-emitting surface of the exit surface of the light from the light assembly. In other words, the second light module faces the reflector surface with its rear side (ie with the surface which emits no light). The light modules can be constructed on the basis of compact and high-intensity light sources in the form of LEDs (light-emitting diode or light-emitting diode), so that the light arrangement would be difficult or impossible to realize according to various embodiments with classic lamps. In the LEDs used can already encapsulated or packaged, with a primary optics - ie a so-called concentrator, which collects the light emerging from the LED chip surface light and in the Benefit direction bundles - provided LED chips are used or even bare LED chips without such primary optics. The geometric arrangement and the choice of the type of LEDs or LED chips in the individual light modules can be adapted to the respective requirements with respect to radiation intensity and / or light color.
  • The reflector of the light assembly is symmetrical and can have collection or focusing or Kollimiereigenschaften as needed. The reflector can have rotational symmetry, that is to say be configured as an ellipsoid or paraboloid reflector, for example. But it can also have mirror symmetry, so be set up as a reflector with symmetrical cross-section, for example in the form of an elongated parabolic mirror. In general, however, the shape of the reflector is not limited to the examples just mentioned, but is given by the respective requirements imposed on the light output. For example, the reflector may be geometrically adjusted in its apex region in such a way that the beam path can be adapted to form corresponding far fields by, for example, increasingly reflecting light incident on the reflector surface to the sides and thus away from the reflector symmetry axis or plane. Furthermore, the surface of the reflector may have a coating which maximizes the reflectance of the light incident on the reflector surface. Thus, the reflector surface may be coated with aluminum, rhodium, silver or any mixture thereof.
  • The light module device is arranged along an axis of symmetry or in a plane of symmetry of the symmetrical reflector. A symmetrical structure, in which the first light module and the second light module are aligned with respect to the symmetry axis or plane of symmetry of the reflector, has advantages over an asymmetrical structure, for example, with respect to the most unwanted shading effects.
  • The first light module has two sub-light modules, between which a first heat dissipation structure is provided, which is arranged along an axis of symmetry or in a plane of symmetry, so that light of each of the sub-light modules illuminates different areas of the reflector. The first heat dissipation structure may be a passive structure, such as a copper sheet, an aluminum sheet or other good heat conducting material, which has the largest possible surface contact with the surfaces of the light modules, which emit no light, or act as an active structure For example, a heat pipe. In this case, the first heat dissipation structure can be arranged such that the beam path of the light emitted by the first sub-light module and by the second sub-light module is influenced as little as possible, thus, for example, shading effects are as low as possible. By way of example, the first heat dissipation structure in a paraboloid reflector can run along the axis of symmetry toward the reflector shell and be fastened thereto. The first light module can then have just two partial light modules, wherein each partial light module primarily illuminates one half of the paraboloid reflector.
  • The lighting arrangement has a third light module, which is arranged on the outside of the reflector and primarily provides light for emitting perpendicularly to the light emission direction of the first light module. In the case of a lighting arrangement which has a cylindrically symmetrical paraboloid reflector, this means that the third light module provides light which propagates primarily parallel to the light exit surface of the reflector, ie to the sides of the lighting arrangement. An individual far field can thus be generated by means of the third light module, wherein the light emitted by the third light module may differ from the latter in at least one of the properties mentioned above with respect to the light of the first and the second light module. For example, the reflector shell can be used to cool the third light module. The third light module can be set up as a compact, that is to say coherent module, or it can also be distributed, i. H. Have partial light modules, which are arranged along the outside of the reflector.
  • In order to ensure a good, for example, optimal illumination of the reflector, the first light module can be arranged in a focal point of the reflector.
  • According to various embodiments, the first light module and the second light module each have at least one light-emitting diode.
  • According to further embodiments, the lighting arrangement may have a second heat dissipation structure, which is arranged between the first light module and the second light module and is arranged as a heat sink for waste heat of the first light module and / or the second light module. The second heat dissipation structure can be arranged independently of the above-mentioned optional, arranged between the sub-light modules of the first light module first heat dissipation structure. In case both structures are provided, they may also be in physical contact with each other. The second heat dissipation structure can be in the form of a passive heat dissipating element, for example a copper sheet or an aluminum sheet, and thus the heat generated in the light module device passively or it can also be set up as an active component.
  • According to various embodiments, the second heat dissipation structure may be configured as a so-called heat pipe. In this case, the first light module and the second light module are in contact with the heat pipe, so that the waste heat generated in the light modules can be transferred to the heat pipe and there leads to the evaporation of the cooling fluid, in which the waste heat generated is consumed and a cooling effect is brought about can. In order to optimize the heat removal, at least the rear sides of the light modules can be in surface contact with the surface of the heat pipe. In other words, the heat pipe extends at the location of the light module device between the first light module and the second light module and is in physical contact at least with the respective rear side of each light module. Depending on the design of the light modules, the light modules can also be embedded or embedded in the heat pipe, so that the side walls of the LEDs or LED chips installed in the light modules are in contact with the heat pipe and thus the heat transport can be further improved. In the contact region between the surface of the heat pipe and the surfaces of the light modules, a material promoting the transport of heat may be provided, for example a thermal compound.
  • According to various embodiments, the second heat dissipation structure may be attached to the reflector at two opposite points. Alternatively, the second heat dissipation structure may be fixed at a point on the reflector. In both cases, it can be achieved that the second Wärmeabführstruktur acts as a carrier for the light module device. Furthermore, the current-carrying lines can be guided along the second heat dissipation structure.
  • In some embodiments of the light assembly, it may include a plate on which the first light module and the second light module are mounted. As such, the plate can act as a support for the light module device. Further, the plate may be made of transparent material and supported on the reflector. Transparency here is to be understood as the property that the plate is (at least) permeable at least to the light leaving the reflector. The plate can extend over the entire light exit surface of the reflector and thus have a relatively large surface area, whereby it can be used in addition to the stabilizing function for removing the heat of the light module device. To support this effect, the plate may be made of a highly thermally conductive transparent material, such as calcium fluoride.
  • According to further embodiments, the luminous arrangement can have a reflective and / or refractive first optic which is set up to form the light emission profile of the light module not radiating into the reflector, that is to say of the second light module. By way of example, this first optical system may be any optical element which is suitable for changing the optical path of light, such as a mirror, a prism, a lens, and / or a diffuser. The first optics can also be a composite element in which two or more of the optical elements just mentioned are combined to adjust the beam path and thus a far field that can be generated thereby.
  • In further various embodiments, the first light module and the second light module may be configured to emit light which differs in at least one of the following properties: wavelength, and / or spectral composition, and / or beam angle of aperture, and / or radiation intensity. For example, a luminous arrangement produced for the home area can be used to generate a bright white spot light by means of the first light module, while atmospheric colored diffuse light can be generated by means of the second light module.
  • According to still further embodiments, the lighting arrangement may further comprise a reflective and / or refractive second optics, in which the light emitted by the third light module can be coupled in and which is arranged to distribute the light along the outside of the reflector. The light distributed in the second optics can then leave the illumination arrangement as useful light via corresponding outcoupling points. The optional second optics can thus be set up to form the far field, which can be generated by the light of the third light module. The third optics may also be any optical element which is suitable for changing the optical path of light, such as a mirror, a prism, a lens, a diffuser. The second optics can also be a composite element in which two or more of the optical elements just mentioned are combined to adjust the beam path and thus a far field that can be generated thereby. Furthermore, the second optics may have polarizing elements which contain, for example, birefringent materials and work in a polarization-selective manner, which makes possible, for example, tunable color reproduction by a mixture of light, which differs from two or more partial light modules of the third light module, whose light is differently polarized.
  • According to further embodiments, the second optic may be formed as a light guide partially or fully surrounding the reflector. As a result, for example, light which is generated by the third light module or partial light modules of the third light module can be distributed over the entire circumference of the reflector and, for example, spread out laterally outwards, whereby diffused edge light can be provided around the reflector.
  • According to various embodiments of the lighting arrangement, the first light module, the second light module and the third light module can be arranged in such a way (relative to one another) that at least two of these three light modules can be driven together, so that different far fields of light can be generated thereby. In other words, the far fields of the light modules provided in the lighting arrangement can be combined in any desired manner, so that corresponding additional far fields can be generated. The lighting arrangement according to various embodiments can therefore emit different far fields that can be generated by means of the individual light modules or a mixture of these far fields.
  • Embodiments of the invention are illustrated in the figures and are explained in more detail below.
  • Show it
  • 1 a schematic structure of a lighting arrangement with multiple far fields according to various embodiments;
  • 2 a schematic overview of exemplary by means of in 1 illustrated lighting arrangement producible far fields according to various embodiments;
  • 3 another schematic structure of a lighting arrangement with multiple far fields according to various embodiments; and
  • 4 a still further schematic structure of a lighting arrangement with multiple far fields according to various embodiments.
  • In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology such as "top", "bottom", "front", "back", "front", "rear", etc. is used with reference to the orientation of the described figure (s). Because components of embodiments can be positioned in a number of different orientations, the directional terminology is illustrative and is in no way limiting. It should be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. It should be understood that the features of the various exemplary embodiments described herein may be combined with each other unless specifically stated otherwise. The following detailed description is therefore not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.
  • As used herein, the terms "connected," "connected," and "coupled" are used to describe both direct and indirect connection, direct or indirect connection, and direct or indirect coupling. In the figures, identical or similar elements are provided with identical reference numerals, as appropriate.
  • In 1 is a schematic structure of a lighting arrangement 100 with multiple far fields according to various embodiments. The illustrated embodiment is based on a lighting arrangement 100 , which has a total of three light modules. The illustrated cross-sectional view can be the cross section of a rotationally symmetrical lighting arrangement 100 represent. In this case the in 1 represented axis about an axis of symmetry 116 the lighting arrangement. The cross-sectional view can also represent the cross-section of a linear luminaire, which then extends perpendicular to the page plane. In that case, then the in 1 represented axis 116 lie in the plane perpendicular to the plane of the plane of symmetry of the linear lamp. At one on the in 1 illustrated cross-section linear light assembly 100 In contrast, the emission profile along the linear structure is typically Lambertian, whereas the emission profile perpendicular to the course of the linear structure can be shaped as required by the interaction of the reflector and various optical elements and can thus deviate from Lambert's radiation profile.
  • In the 1 illustrated lighting arrangement 100 has a light module device, comprising a first light module 104 and a second light module 106 , The first light module 104 is with its back on a heat pipe 108 appropriate and with its light-emitting surface a reflector 102 or its reflective surface facing. In this embodiment, the first light module 104 in the focal point of the reflector 102 arranged, ie the axis of symmetry 116 (or plane of symmetry in the case of a linear light assembly) passes centrally through the first light module 104 , That of the first light module 104 generated light 118 falls on the reflector 102 and is collimated by this, making it the reflector 102 can leave via its light exit surface. The light exit surface is to be understood as the surface which is bounded by the edge of the reflector shell.
  • The second light module 106 is the same size as the first light module in this embodiment 104 , whereby Lichtabschattungseffekte in the lighting arrangement 100 can be minimized. The second light module 106 is with his back on the heat pipe 108 attached and thus simultaneously with its back the back of the first light module 104 turned. This is the direction of the through the second light module 106 radiated light of the direction of the through the first light module 104 emitted light opposite. In other words, the first light module radiates 104 Light backwards into a reflector while the second light module 106 Light emits in the forward direction towards the reflector exit surface. Mind you, this statement applies only to the light immediately after leaving the light modules, ie before the light impinges on the reflector shell or other optical elements that influence the light path.
  • The first light module 104 and the second light module 106 the light module device are both on the heat pipe 108 appropriate. The surface of the heat pipe 108 can be used as a heat sink and can, for example, have a rib structure or another structure which is suitable to increase the surface and thus accelerated release heat. The heat pipe 108 can also be connected in addition to a separate heat sink, which may also contain ballast and control electronics. The heat pipe 108 is in this embodiment at two opposite points of the reflector 102 attached and it is also set up as a support or holder for the light module device, which thus "floats" over the reflector. In addition, however, a plate (not shown) may be provided of a transparent material, which rests on the reflector edge and is also connected to the light module device, so that it is additionally supported. By making the plate from a thermally conductive material, the effect of the additional dissipation of the waste heat from the light module device can be further enhanced. The heat pipe 108 and the area in which the light module means to the heat pipe 108 is attached, can be made of a good heat conductive material, for. As copper, to ensure rapid removal of heat generated by the light module device. Alternatively, however, any parts of the heat dissipating system may for example be made of another suitable material, such as another metal such as aluminum.
  • Above the second light module 106 is a first look 110 intended as secondary optics. Secondary optics is to be understood as optics for redistributing the light with the aid of which a far field desired for the particular application can be generated. Without the first optics 110 emits the second light module 106 typically light with Lambertian or near Lambertian intensity distribution. So that other far fields can be realized and possibly glare in an area around the axis of symmetry 116 or close to the plane of symmetry 116 in front of the light assembly 100 can be avoided in the emission of the light assembly 100 the first optics 110 be provided, which from the second light module 106 radiated light 120 redistributed. The first look 110 For example, it may be supported on or mounted on a plate made of a material that is transparent in the relevant wavelength range, the plate then resting on the edge of the reflector 102 or at a second optics 114 attached or supported. Alternatively, the first optics 110 also by means of a wire, which is attached, for example, to the light module device, in position above the second light module 106 being held. The first look 110 may be refractive (eg prism) or reflective (eg mirror) type and, for example, arranged such that a far field can be generated in batwing form. As a result, therefore, the second light module 106 his light 120 radiate directly, with the help of the optional first optics 110 or even without, the first case in the 1 is shown. The light 120 the second light module can also be a second optics 114 be fed and thus indirectly emitted via this. In 1 is such a second look 114 in the form of a scatter tube (in the case of a rotationally symmetrical lighting arrangement) or diffuser (in the case of a linear lighting arrangement) shown schematically. In the case of a rotationally symmetrical lighting arrangement, the second optics 114 be formed in the form of a hollow cylinder, which is so on the edge of the reflector 102 is arranged that its axis of symmetry with the axis of symmetry 116 the lighting arrangement 110 coincides. The light 120 from the second light module 106 can the inner wall of the second optics 114 continue to illuminate in the direction of radiation and, for example, as stray light from the second optics 114 be delivered. The wall of the second optics 114 can also use one Be coated or this phosphor may be embedded therein, so that an at least partial conversion of the second light module 106 originating light 120 takes place and the converted light as the useful light, the light assembly 100 leaves. Furthermore, the second optics 114 be set up so that they are part of the second light module 106 incident light 120 reflected and thus not to the outside of the second optics 114 lets through and the in the second optics 114 embedded phosphor converted part of the light to either side of the wall of the second optics 114 radiates.
  • Optionally, the light assembly 100 a third light module 112 exhibit. The third light module 112 can be analogous to the first light module 104 and to the second light module 106 have multiple LEDs or LED chips. These can be arranged in any order along the outer edge of the reflector 102 be arranged. Thus, the third light module may be formed, for example, as an annular LED or LED chip light strip. The third light module 112 radiated light can go directly to the sides of the reflector 102 be radiated or, as in 1 shown in the second optics 114 be coupled and by means of the second optics 114 as the light of the third far field 122 are emitted, which is primarily perpendicular to the axis of symmetry 116 or symmetry plane 116 the lighting arrangement 100 is emitted. In this case, the second optics 114 Have optical fiber structures through which light in the second optics 114 can be distributed. The second optics 114 may be provided in volume with scatterers and / or on the surface with Auskoppelstrukturen, for example, a roughened surface structure. As a result, by means of the third light module 114 in conjunction with the second optics 114 a broadly radiating room light 122 will be realized. In combination with the second light module 106 can the second optics 114 be mirrored on its inside, which, among other things, a reduction of glare from light 120 from the second light module 106 can be achieved. In this case, the above-mentioned mode in which the light is omitted 120 of the second light module 106 the second optics 114 illuminated and diffused scattered light is generated, which can be discharged to the outside as room light. Rather, then radiates the second light module 106 light 120 directly with or without the participation of the first optics 110 off, leaving much of the second light module 106 emitted radiation 120 not on the second optics 114 meets.
  • In the 1 shown schematic overview contains only the most important elements which contribute to the formation of the light assembly 100 needed. Other elements, such as the ballast and control electronics, which may be provided in the light assembly have been omitted for clarity.
  • Depending on requirements and application, the light modules can be equipped with different colors as well as different colors. For common lighting purposes, a power between 10 and 30 watts can be assumed for each of the light modules.
  • In 2 is a schematic overview of exemplary by means of in 1 shown lighting arrangement generatable far fields according to various embodiments shown. In this case, the contours of the illustrated far fields mark locations at which the intensity of the light generated by the respective light module has dropped to a certain intensity value. The first far field 218 is by means of the first light module 104 producible, the second far field 220 is by means of the second light module 106 producible and finally is the third far field 122 by means of the third light module 112 produced. In the exemplary scenario shown, for example, the first far field 218 be set up as a strong long-range club-shaped light field, the second far field 220 can be set up as a medium-sized Batwing-shaped far-field and the third far-field 222 can be arranged as a diffuse far field short range, which is the immediate edge region of the light assembly 100 illuminates.
  • By selective or combined control of at least one of the three light modules different light scenarios can be achieved. The LEDs or LED chips in the light modules may be spectrally rigid or arranged as spectrally controllable, ie capable of changing the color of the light produced. For example, the third light module 112 with low light flux as a coloring effect lighting for the lighting arrangement 100 be used while the main light from the other light modules - for example, the first light module 104 and the second light module 106 - provided. By overlapping different far fields with different colors, it is also possible to illuminate areas with light of a different color than the color of the primary far fields.
  • In 3 is another schematic structure of a lighting arrangement 300 with multiple far fields according to various embodiments. In the 3 shown lighting arrangement 300 is essentially the same as in 1 illustrated lighting arrangement 100 , wherein like elements bear like reference numerals and will not be described again below.
  • In the 3 illustrated lighting arrangement 300 shows in terms of in 1 illustrated lighting arrangement 100 an alternative form of the second Wärmeabführstruktur, as a heat pipe 302 can be set up. The heat pipe 302 is in this embodiment between a point on the edge of the reflector 102 and the light module device arranged. In other words, the heat pipe 302 attached at a point on the reflector edge and may be substantially parallel to the light exit plane of the reflector 102 run. In this case, the light module device in the same manner as in connection with the 1 illustrated lighting arrangement 100 described on the heat pipe 302 to be appropriate.
  • Another lighting arrangement 400 according to various embodiments is in 4 shown. In the 4 shown lighting arrangement 400 is essentially the same as in 1 illustrated lighting arrangement 100 , wherein like elements bear like reference numerals and will not be described again below.
  • In the 4 illustrated lighting arrangement 400 shows in terms of in 1 illustrated lighting arrangement 100 Another possibility of heat dissipation of the light module assembly in the form of a first Wärmeabführstruktur, as a heat pipe 402 can be set up. Similar to the in 3 shown light assembly 300 extends the heat pipe 402 between a point on the reflector 102 and the light module device. However, the heat pipe runs 402 here essentially perpendicular to the light exit plane or parallel to the axis of symmetry 106 the lighting arrangement (in cylindrically symmetrical lighting arrangement) or in the plane of symmetry 116 the lighting arrangement (with linear lighting arrangement) and is at the apex of the reflector 102 attached. In other words, the heat pipe is located 402 below the light module device. This can be the heat pipe 402 have a T-shape and subdivide the light module device into three parts, namely in a first light module, which through the trunk of the T-shaped heat pipe 402 again in a first partial light module 404 and a second partial light module 406 is divided, and a second light module 106 , The division of the first light module is not necessarily to be understood as a physical separation, but can also as a simple assignment of the within the first partial light module 404 and the second partial light module 406 arranged light-emitting diodes and / or light-emitting diode chips are understood.
  • The arrangement just described allows a good heat dissipation, since both the rear sides of the light modules and the side surfaces of the first partial light module 404 and the second partial light module 406 in contact with the heat pipe 402 stand. In addition, a sheath (not shown in the figure) may be provided, which comprises the non-light emitting side surfaces of the entire light module assembly and acts as a heat sink. The sheathing may be made of a good thermally conductive material, for example copper, aluminum or silver, and / or structures dissipating heat, for example grooves, on the side facing away from the light module arrangement. The sheath can be with the perpendicular to the trunk of the T-shaped heat pipe 402 extending part of the heat pipe 402 be connected, whereby the waste heat of the light module assembly can be performed by the sheath on to the heat pipe. Incidentally, such a jacket can also be found in the in 1 and 3 illustrated exemplary lighting arrangements may be provided, where it is directly connected to the heat pipe, which may then be attached to the sheath or can pass through the sheathing to the center of the light module assembly.
  • In the 4 illustrated lighting arrangement 400 According to various embodiments has the further advantage that by the arrangement of the heat pipe 402 below the light module device the shading effect compared to the in 1 and in 3 shown exemplary lighting arrangements can be reduced.
  • In the 1 to 4 illustrated lighting arrangements 100 For example, in each case a commercial PAR (parabolic aluminized reflector - aluminized parabolic reflector) 38 have housing and be configured for example as an LED par lamp, so that it is suitable for direct operation in the normal household electricity network and easily as an economical LED PAR lamp can replace ordinary PAR 38 lamps with multiple far fields.

Claims (15)

  1. Illumination arrangement ( 100 . 300 . 400 ), comprising: a reflector ( 102 ), which is symmetrical; a light module device comprising: a first light module ( 104 ) and a second light module ( 106 ), Where the first light module ( 104 ) is arranged such that it is light in operation in the reflector ( 102 ), and wherein the second light module ( 106 ) is physically connected to the first light module and is arranged such that a light emission in operation in one to a light emission direction of the first light module ( 104 ) opposite direction, wherein the light module device along an axis of symmetry ( 116 ) or in a symmetry plane ( 116 ) of the symmetrical reflector ( 102 ) is arranged and the first light module ( 104 ) two partial light modules ( 404 . 406 ), between which a first heat dissipation structure ( 402 ) along an axis of symmetry ( 116 ) or in a symmetry plane ( 116 ) is arranged so that light of each of the sub-light modules ( 404 . 406 ) each different areas of the reflector ( 102 ) and wherein the lighting arrangement further comprises a third light module ( 112 ), which on the outside of the reflector ( 102 ) is arranged and for the emission of light primarily perpendicular to the light emission direction of the first light module ( 104 ) is set up.
  2. Illumination arrangement ( 100 . 300 . 400 ) according to claim 1, wherein the first light module ( 104 ) in a focal point of the reflector ( 102 ) is arranged.
  3. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 2, wherein the first light module ( 104 ) and the second light module ( 106 ) each have at least one light emitting diode.
  4. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 3, further comprising: a second heat dissipation structure ( 108 ), which between the first light module ( 104 ) and the second light module ( 106 ) is arranged and as a heat sink for waste heat of the first light module ( 104 ) and / or the second light module ( 106 ) is set up.
  5. Illumination arrangement ( 100 . 300 . 400 ) according to claim 4, wherein the second heat dissipation structure ( 108 ) is set up as a heat pipe.
  6. Illumination arrangement ( 100 . 300 . 400 ) according to claim 4 or 5, wherein the second heat dissipation structure ( 108 ) at two opposite points on the reflector ( 102 ) is attached.
  7. Illumination arrangement ( 100 . 300 . 400 ) according to claim 4 or 5, wherein the second heat dissipation structure ( 302 ) at one point on the reflector ( 102 ) is attached.
  8. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 7, further comprising: a plate on which the first light module ( 104 ) and the second light module ( 106 ) are attached.
  9. Illumination arrangement ( 100 . 300 . 400 ) according to claim 8, wherein the plate is made of transparent material.
  10. Illumination arrangement ( 100 . 300 . 400 ) according to claim 8 or 9, wherein the plate on the reflector ( 102 ) is supported.
  11. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 10, further comprising: a reflective and / or refractive first optic ( 110 ) which is arranged to form the light emission profile of the second light module ( 106 ).
  12. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 11, wherein the first light module ( 104 ) and the second light module ( 106 ) are adapted to emit light which differs in at least one of the following properties: wavelength and / or spectral composition, and / or aperture angle of the emitted cone of light, and / or radiation intensity.
  13. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 12, further comprising: a reflective and / or refractive second optics ( 114 ) into which the third light module ( 112 ) radiated light and which for distributing the light along the outside of the reflector ( 102 ) is set up.
  14. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 13, wherein the second optic ( 114 ) as a reflector ( 102 ) is formed fully surrounding optical fiber.
  15. Illumination arrangement ( 100 . 300 . 400 ) according to one of claims 1 to 14, wherein the first light module ( 104 ), the second light module ( 106 ) and the third light module ( 112 ) are set up so that at least two of these three light modules are controllable together, so that different light fields ( 118 . 120 . 122 ; 218 . 220 . 222 ) are producible.
DE102011081459.0A 2011-08-24 2011-08-24 Illumination arrangement with multiple far fields Expired - Fee Related DE102011081459B4 (en)

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WO2017129506A1 (en) * 2016-01-27 2017-08-03 Shade Aps An assembly of a shade and a light source

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US2726321A (en) * 1953-02-06 1955-12-06 Riotto Joseph Flashlights
US5749646A (en) * 1992-01-17 1998-05-12 Brittell; Gerald A. Special effect lamps
EP1298383A2 (en) * 2001-09-28 2003-04-02 Osram Sylvania Inc. Replaceable led lamp capsule
US20050243552A1 (en) * 2004-04-30 2005-11-03 Lighting Science Group Corporation Light bulb having surfaces for reflecting light produced by electronic light generating sources
US7118245B1 (en) * 2004-05-11 2006-10-10 Allen Herrington Trainman's lantern
US7270448B1 (en) * 2004-12-01 2007-09-18 Techlite Inc. Light fixture having at least two LEDs directed toward curved surface of reflector
US20090002986A1 (en) * 2007-06-27 2009-01-01 Cree, Inc. Light Emitting Device (LED) Lighting Systems for Emitting Light in Multiple Directions and Related Methods
US8079737B2 (en) * 2009-04-20 2011-12-20 Harvatek Corporation Reflection-type light-emitting module with high heat-dissipating and high light-generating efficiency

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726321A (en) * 1953-02-06 1955-12-06 Riotto Joseph Flashlights
US5749646A (en) * 1992-01-17 1998-05-12 Brittell; Gerald A. Special effect lamps
EP1298383A2 (en) * 2001-09-28 2003-04-02 Osram Sylvania Inc. Replaceable led lamp capsule
US20050243552A1 (en) * 2004-04-30 2005-11-03 Lighting Science Group Corporation Light bulb having surfaces for reflecting light produced by electronic light generating sources
US7118245B1 (en) * 2004-05-11 2006-10-10 Allen Herrington Trainman's lantern
US7270448B1 (en) * 2004-12-01 2007-09-18 Techlite Inc. Light fixture having at least two LEDs directed toward curved surface of reflector
US20090002986A1 (en) * 2007-06-27 2009-01-01 Cree, Inc. Light Emitting Device (LED) Lighting Systems for Emitting Light in Multiple Directions and Related Methods
US8079737B2 (en) * 2009-04-20 2011-12-20 Harvatek Corporation Reflection-type light-emitting module with high heat-dissipating and high light-generating efficiency

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