Patent Application
20190271461
The invention relates to a luminaire, a housing component for a luminaire, and a method for producing a luminaire.
The applicant is aware of luminaires which comprise for example individual luminous points or light sources arranged linearly in a row and act as “downlight” or as “wallwasher”. Furthermore, the applicant is aware of luminaires in which individual light sources of this type are provided in a matrixlike fashion.
However, conventional luminaires of the type mentioned above are limited with regard to their configurability. A light scene or lighting effect sought often requires the use of a plurality of luminaires.
One of the ideas of the invention is to specify a luminaire which can be configured beforehand for a wide variety of lighting effects or light scenes and then be assembled, which furthermore is constructed compactly and can nevertheless achieve in particular a multiplicity of lighting effects, which despite its compact construction makes it possible to effectively dissipate quantities of heat that arise, and which in addition is producible economically.
Accordingly, a luminaire is proposed which comprises a housing component and at least one LED carrier circuit board. The housing component has at least one section which projects from a base of the housing component and which is formed with a plurality of surfaces oriented differently relative to the base. The LED carrier circuit board carries at least one LED device as light source for providing light to be emitted by the luminaire. In the case of the luminaire according to the invention, the LED carrier circuit board is arranged by a rear side thereof at least in sections on one of the plurality of surfaces of the section projecting from the base in such a way that the LED device overlies said one of the surfaces at least regionally/partially. Furthermore, in the case of the luminaire according to the invention, the housing component, in the region of the base thereof, has at least one region which is formed as a heatsink for dissipating heat generated by the LED device during operation.
Furthermore, a housing component for a luminaire, in particular for a luminaire of this type, is proposed, wherein the housing component has at least one, in particular domelike, section which projects from a base of the housing component and which is connected to the base in a self-supporting manner and is formed with a plurality of surfaces oriented differently relative to the base. In the region of the base of the housing component, the housing component has at least one region formed as a heatsink. The housing component is furthermore configured for securing at least one LED carrier circuit board carrying at least one LED device as light source for providing light to be emitted by the luminaire to the housing component in such a way that heat generated by the LED device during operation is able to be dissipated via the section projecting from the base into the region formed as a heatsink.
Furthermore, the invention proposes a method for producing a luminaire, in particular a luminaire of this type, wherein the method comprises the following steps:
One of the concepts underlying the present disclosure consists in proposing a luminaire whose construction follows a modular system approach. The luminaire according to the invention, even before it has been assembled, in other words before the assembly of the individual parts of the luminaire, can be configured and thereby individually shaped and fashioned in a flexible manner. A high degree of modularity and flexibility is thus afforded. The modular, configurable construction of the luminaire is made possible by the housing component of the luminaire that is provided according to the invention, the projecting section of which housing component is formed with the surfaces oriented differently relative to the base. In this way it becomes possible, for example, to use the LED carrier circuit board in such a way that light can optionally be emitted for instance in accordance with the emission characteristic of a downlight or of a wallwasher, for example with the aid of optical components provided therefor. For a given size of the luminaire, just a single shaping of the housing component thus becomes necessary. One and the same type of housing component thus makes possible differently configured luminaires and thus many kinds of lighting effects. Depending on the desired effect that is intended to be achieved with the LED device, and depending on the desired main emission direction, for instance in the manner of a downlight or wallwasher, the LED carrier circuit board can be positioned by its rear side on one of the differently oriented surfaces of the section projecting from the base. With one and the same housing component, a wider variety of arrangements of the LED carrier circuit board are implemented in conjunction with a compact and cost-saving construction of the luminaire, in association with effective heat dissipation via the section projecting from the base and the region formed as a heatsink, and thus in association with effective cooling of the LED device. The configuration of the luminaire can be carried out even before production and delivery thereof, for instance during ordering, for example by the customer or light designer. The multifunctional housing component combines in itself a housing function and also, with the region acting as a heatsink, a cooling function in one and the same component. This, too, contributes to a compact luminaire. In particular, the luminaire can be made comparatively small in a space-saving fashion and nevertheless illuminate a large spatial region.
The situation in which the LED device at least regionally/partially overlies the surface of the section projecting from the base is intended to be understood in the present application so as also to encompass cases in which between the LED device and the surface overlying there is/are also one/a plurality of further component(s), in particular a partial region of the LED carrier circuit board on which the LED device is arranged. The overlying mentioned above can be understood in this sense to the effect that the LED device covers at least regionally said surface of the section projecting from the base, although one or a plurality of further components, in particular said partial region of the LED carrier circuit board, can be arranged between the LED device and the surface. Arrangements in which the LED device is situated completely within the boundaries of said surface or the surface is completely overlain by the LED device are also intended to be encompassed, in particular.
Advantageous embodiments and developments are evident from the dependent claims and also from the description with reference to the figures of the drawing.
In one embodiment, the housing component is integrally cast, in particular integrally die-cast. A housing component of this type can be produced economically even with relatively complex shaping.
In one preferred embodiment, the housing component is formed with a metal material. In particular, the housing component can be produced from a metal material by die-casting, for example. The metal material can be aluminium or an aluminium alloy, for example. A housing component of this type is well suited to acting regionally as a heatsink, and is additionally robust.
In one embodiment, a basic area of the housing component is formed in particular in a rectangular or square fashion. This can be useful in many mounting situations. Other shapes are likewise conceivable, however.
Preferably, the section projecting from the base is formed such that it is connected to the base in a self-supporting manner. This enables good access to the projecting section.
In one configuration, the section projecting from the base of the housing component is formed in a domelike fashion. The outer shape of the section projecting from the base preferably has the shape of a truncated pyramid. Sufficiently large and suitably oriented surfaces, for example including oblique surfaces relative to the base, can be provided in this way.
In one embodiment, the shape of the truncated pyramid is formed as a shape of a frustum of a regular pyramid, in particular of a right pyramid having a square base area. Other base area shapes are also conceivable, however, in particular base areas in the shape of a regular polygon. Such shapes have advantageous symmetries.
In particular, the outer shape of the section projecting from the base can have a rotational symmetry and can be mapped onto itself for example by rotation about an axis by a defined angle. For example, it can be provided that the outer shape of the section projecting from the base can be mapped onto itself upon rotation about an axis by 90 degrees, which is the case for example for the abovementioned shape of a frustum of a regular pyramid having a square base area. This simplifies the arrangement of the LED carrier circuit board in sections by the rear side thereof optionally on different surfaces from among the surfaces of the section projecting from the base.
In one embodiment, a surface of the surfaces of the section projecting from the base forms a top surface thereof and is oriented preferably substantially parallel to a main extension plane of the base. In this embodiment, further surfaces from among the surfaces of the section projecting from the base are formed as surfaces inclined with respect to the main extension plane of the base.
In particular, the LED carrier circuit board is arranged at least by a section of the rear side thereof on said one of the plurality of surfaces of the section projecting from the base in such a way that the LED device overlies said one of the surfaces at least regionally/partially.
By way of example, for an LED device which provides light which is intended to be emitted by the luminaire in the manner of a downlight, the rear side of the LED carrier circuit board can be arranged in sections on the top surface of the section projecting from the base. By contrast, for an LED device which provides light which is intended to be emitted by the luminaire in the manner of a wallwasher, the rear side of the LED carrier circuit board can be arranged in sections on one of the inclined surfaces of the section projecting from the base. The different inclined surfaces can afford the possibility, in particular, of selecting the emission direction, without a modified housing component being required.
The surfaces of the projecting section which are oriented differently relative to the base can be planar surfaces, in particular. This further facilitates the arrangement of the LED carrier circuit board on one of said surfaces.
In one embodiment, the luminaire comprises at least one adapter component provided with a cutout, in which the section projecting from the base is able to be accommodated at least regionally. In this case, an LED carrier circuit board is secured on the adapter component in such a way that the LED carrier circuit board secured to the adapter component placed onto the section projecting from the base is arranged by a rear side of said LED carrier circuit board on one of the inclined surfaces of the section projecting from the base at least in sections in such a way that the LED device arranged on said LED carrier circuit board overlies said one of the inclined surfaces at least regionally. This embodiment makes it possible to achieve a defined, stable arrangement of the LED carrier circuit boards in sections by the rear side thereof on one of the inclined surfaces and reliable securing of the LED carrier circuit board in the housing component.
In one development, the adapter component is integrally cast, in particular integrally die-cast. An adapter component of this type can be produced economically.
In particular, the adapter component is formed with a metal material. The adapter component can be manufactured from a metal material like the housing component, for example by die-casting. The metal material can be aluminium or an aluminium alloy, for example. Such materials have good heat conducting properties for the adapter component and contribute to a robust adapter component.
In one embodiment, inclinations of mutually opposite surfaces of the cutout of the adapter component correspond to the inclinations of two of the inclined surfaces of the section projecting from the base. Furthermore, in one development, an inclination of an accommodating surface of the adapter component for accommodating the LED carrier circuit board can correspond to the inclination of one of the further inclined surfaces of the section projecting from the base. Consequently, an areal contact makes it possible to achieve, in particular, stable securing of the adapter component on the projecting section and good heat dissipation.
In one preferred embodiment, the housing component has a plurality of the sections projecting from the base, which are formed in an identical way. Furthermore, in this case, the luminaire comprises a plurality of function fields, wherein one of the plurality of sections projecting from the base is arranged in each of the function fields. In particular, the section projecting from the base can be arranged in each case substantially in the centre of the function field. This makes possible a multiplicity of different ways of arranging LED devices such that effective heat dissipation becomes possible in a compact and expedient manner.
The plurality of sections projecting from the base and thus also the function fields can be arranged along a line or in accordance with a two-dimensional pattern or grid. By way of example, the projecting sections and thus the function fields can be arranged linearly in a row or instead in a matrixlike fashion. This can further facilitate the arrangement of the LED devices and of the LED carrier circuit board(s) and extend the combination possibilities. A luminaire of this type can moreover be designed in an aesthetically attractive fashion.
In one embodiment, provision can be made for the luminaire to comprise only a single function field. In preferred embodiments, provision can be made for the luminaire to comprise a plurality of function fields, for example two, three, four, five or six function fields, or a different number thereof, arranged in a row next to one another and thus “linearly”. In further preferred embodiments, the function fields can be arranged in accordance with an n×m matrix having n rows and m columns, for example a 2×2 matrix or a 3×3 matrix or a 3×2 matrix. Here n, m are integers in each case.
In one preferred embodiment, the function fields can be of square shape. Other shapes, for example rectangular function fields, are likewise conceivable. Square function fields, in particular, can be easily arranged regularly and in a space-saving manner.
In one embodiment, the housing component, in the region of the base thereof, has for each function field a region which is assigned to said function field and which is formed as a heatsink for dissipating heat that is generatable by an LED device arrangeable in said function field during the operation of said LED device. Consequently, the heat generated by each of the LED devices can be dissipated effectively and reliably, which can have a favourable effect for example on the lifetime of the LED devices.
In one embodiment, the plurality of regions formed as heatsinks are spaced apart from one another by channels on a rear side of the base facing away from the sections projecting from the base. This further improves the cooling effect of said regions. The channels can further improve the heat dissipation by convection, for example.
In one embodiment, the luminaire comprises a plurality of LED devices, each of which is assigned to one of the function fields and is arranged in said one of the function fields. Consequently, the luminaire comprises a plurality of light sources, which is advantageous for generating different light effects or illuminating different regions.
In one embodiment, the luminaire comprises a plurality of LED carrier circuit boards, wherein each of the LED carrier circuit boards carries one or a plurality of the LED devices. Carrier circuit boards which each carry one LED device can easily be combined with one another and with other LED carrier circuit boards. By arranging a plurality of LED devices on an LED carrier circuit board, it is possible to simplify the assembly of the luminaire. In one embodiment, all of the LED devices can be carried by the same LED carrier circuit board.
In a further exemplary embodiment, a plurality of LED devices, each of which is assigned to one of a plurality of the function fields, are arranged on one LED carrier circuit board. In this way, for example, LED devices oriented in the same way can be provided and incorporated into the luminaire in a simple way.
In a further embodiment, a plurality of LED carrier circuit boards can be provided, each carrying one of a plurality of LED devices, wherein each of the LED devices is assigned to one of the function fields. In this way, the function fields can readily be equipped with LED devices in a different way, for example with differently oriented LED devices.
In one embodiment, the plurality of LED carrier circuit boards are formed differently from one another. In particular, the LED carrier circuit boards can carry different numbers of LED devices, as a result of which, for example, one/a plurality of LED carrier circuit board(s) each having a single LED device is/are combinable with one/a plurality of LED carrier circuit board(s) each having a plurality of LED devices. The housing component makes it possible to combine different LED carrier circuit boards in a luminaire in order to realize different function fields and lighting effects. In particular, different circuit board shapes can be combined in a luminaire, as a result of which, for example, a sought arrangement of LED devices for the configuration of the luminaire becomes possible in the simplest and most economic way possible.
In one embodiment, the luminaire comprises one optical component or a plurality of optical components. Here the optical component(s) is/are arranged in each case in particular in one of the function fields. By way of example, the optical component(s) is/are arranged in such a way that a function field has a predefined emission characteristic, for example the emission characteristic of a downlight or of a wallwasher, by means of the interaction of the optical component with the LED device. If a plurality of optical components are provided, then each of the optical components of the luminaire in interaction with the LED device assigned to the optical component brings about a respectively predefined emission characteristic of the respective function field. The emission characteristics of different function fields can differ from one another for generating different light effects and can be formed for example in each case as an emission characteristic of a downlight or wallwasher. A combination of different emission characteristics in one luminaire thus becomes possible in an economic way. With the aid of the advantageous design of the housing component, each of the function fields can be equipped with the emission characteristic of a downlight or of a wallwasher in a selectable manner.
In particular, the rear side of the LED carrier circuit board for a function field having the emission characteristic of a downlight can be arranged in sections on the top surface of the section projecting from the base. By contrast, the rear side of the LED carrier circuit board for a function field having the emission characteristic of a wallwasher can be arranged in sections on one of the inclined surfaces of the section projecting from the base.
The optical component can have for example in each case a rectangular or preferably square outer contour, in particular in such a way that a plurality of the optical components can be arranged next to one another in a manner substantially filling a rectangular or square region.
In one embodiment, the optical component(s) is/are formed in each case as a reflector. An embodiment of the optical component(s) as lens(es) would likewise be conceivable, however. A combination of reflector(s) and lens(es) is also conceivable.
In one embodiment, in at least one first of the function fields a first LED carrier circuit board is arranged by a rear side thereof at least in sections on a first surface of that section projecting from the base which is assigned to the first function field in such a way that an LED device assigned to the first function field and carried by the first LED carrier circuit board overlies the first surface at least regionally. In this case, furthermore a first optical component is arranged in the first function field, and imparts a first emission characteristic to the first function field. Furthermore, in this embodiment, in at least one second of the function fields a second LED carrier circuit board is arranged by a rear side thereof at least in sections on a second surface of that section projecting from the base which is assigned to the second function field in such a way that an LED device assigned to the second function field and carried by the second LED carrier circuit board overlies the second surface at least regionally. In this case, a second optical component is arranged in the second function field, and imparts a second emission characteristic to the second function field. In this case, the first surface and the second surface are oriented in the same way relative to the base. In this embodiment, the first and second emission characteristics are substantially identical or different from one another. Consequently, two function fields are provided, which, by means of a respective optical component, can emit light having a predefined emission characteristic for example in the same main direction. In particular, in one development, the first and second emission characteristics can be formed in each case as an emission characteristic of a downlight or in each case as an emission characteristic of a wallwasher. Consequently, the first and second function fields can emit for example in each case in the manner of a downlight or in each case in the manner of a wallwasher.
In one embodiment, at least one first of the function fields a first LED carrier circuit board is arranged by a rear side thereof at least in sections on a first surface of that section projecting from the base which is assigned to the first function field in such a way that an LED device assigned to the first function field and carried by the first LED carrier circuit board overlies the first surface at least regionally. In this case, furthermore a first optical component is arranged in the first function field, and imparts a first emission characteristic to the first function field. Furthermore, in this configuration, in at least one second of the function fields a second LED carrier circuit board is arranged by a rear side thereof at least in sections on a surface surface of that section projecting from the base which is assigned to the second function field in such a way that an LED device assigned to the second function field and carried by the second LED carrier circuit board overlies the second surface at least regionally. In the case, a second optical component is arranged in the second function field, and imparts a second emission characteristic to the second function field. The second surface is oriented differently from the first surface relative to the base. In this case, in particular, in one development, the first and second emission characteristics can be formed in each case as an emission characteristic of a wallwasher. In an alternative development, the first emission characteristic can be formed as an emission characteristic of a downlight and the second emission characteristic can be formed as an emission characteristic of a wallwasher.
In one embodiment, a sensor device is arranged in at least one of the function fields. Consequently, the functional scope of the luminaire can be extended by an additional function in a space- and outlay-saving manner.
In further embodiments, the sensor device could be formed for example as a presence sensor or as a brightness sensor or as a moisture sensor or as a temperature sensor. Sensor devices for detecting other parameters are likewise conceivable, however.
In one embodiment, the luminaire comprises a connection unit or a connection and control unit equipped with a plurality of connecting devices, by means of which the LED carrier circuit board or a plurality of the LED carrier circuit boards is/are able in each case to be electrically coupled to the connection unit or the connection and control unit. In this embodiment, the housing component is formed in a troughlike fashion with a bottom formed by the base, side walls, an inner region and an open side. The housing component has in a side wall a recess also extending into the base and serving for accommodating the connection unit or the connection and control unit, wherein the connection unit or the connection and control unit is formed in a flat fashion and is accommodated with its main extension plane along the side wall in sections in the inner region of the housing component and in the recess. Such a connection unit or connection and control unit can be accommodated in a space-saving manner and enables a diverse, flexible coupling to the carrier circuit boards.
In particular, the connection unit can be arranged substantially flush with an outer side of the housing component. In this way the connection unit is arranged in a particularly space-saving manner.
In one embodiment, the luminaire comprises a central control arrangement, which provides a plurality of channels for controlling the LED device or a plurality of the LED devices. In this case, in particular by means of the control arrangement a plurality of the LED devices are driveable in each case individually and/or in a manner combined in groups. This enables highly flexible switching and/or control of the LED device(s). It is thus possible to provide a uniform luminaire having a plurality of light sources which are switchable and/or controllable for generating different light effects.
In one embodiment, each of the LED devices can be driven separately by the central control unit via one or two control channel(s) assigned to the LED device.
In particular, the central control arrangement can provide at least one control channel or at least two control channels per LED device. With at least one control channel for each LED device, each of the latter can be controlled separately in terms of the light intensity thereof. At least two control channels per LED device make possible, moreover, a colour variation of the emitted light, for example with the aim of “tunable white”.
In developments of the invention, a plurality of the LED devices can be driven via one or two common control channels.
In one embodiment, the luminaire is switchable and/or drivable by means of a switching and/or control signal provided in a wireless or wired manner, in particular for switching and/or controlling the LED device(s) or groups thereof. The luminaire can comprise an interface for receiving such a switching and/or control signal in a wireless or wired way. Preferably, the luminaire is wirelessly switchable and/or driveable and comprises a corresponding interface.
In one development, the central control unit can be configured to receive a switching and/or control signal for switching and/or controlling the LED device(s) or groups of the LED devices in a wireless and/or wired way, for example by means of a ZigBee interface or a DALI interface.
In one embodiment, a power electronic component and/or power electronic arrangement are/is arranged together with the LED device on the LED carrier circuit board. Alternatively or additionally, the power electronic component and/or power electronic arrangement can be provided on a further circuit board arranged at least partly within the function field assigned to the LED device. The further circuit board can be arranged in particular at least in sections on one of the plurality of differently oriented surfaces of the section projecting from the base, for example on one of the inclined surfaces. Power electronic elements can thus be provided in a manner decoupled from the central control arrangement.
In one embodiment, the LED device(s) is/are dimmable in an analogue manner. In the present application, analogue dimming should be understood to mean in particular current dimming which makes possible, by regulation of a constant current with which the LED device(s) is/are supplied in each case for the operation thereof, a dimming of the light emission by the LED device and thus in particular a dimming of the light emitted by the assigned function field mentioned above. A dimming of this type thus differs from a pulse dimming, in which the dimming is achieved by periodically switching the light source on/off (“pulse”).
The LED device(s) has/have in each case in particular at least one LED. The LED device(s) can be formed in each case in particular as one LED (light-emitting diode) or as a group of a plurality of LEDs.
In one embodiment, the luminaire is configured for supplying the LED device or LED devices of the luminaire with electrical energy by means of an external converter. This makes it possible to provide a luminaire that is simplified with regard to the driving and supply of the LED device(s), while at the same time saving costs. In this embodiment, it is possible to dispense with power electronic components on the LED carrier circuit board(s) and/or the further circuit board(s).
In one embodiment, the luminaire comprises an installation frame, with which the housing component is latchable by means of spring-loaded elements, in particular spring-loaded balls, arranged on the housing component. For this purpose, the housing component can be inserted into the installation frame, wherein the installation frame has an inner region which corresponds to the housing component and which serves for accommodating the housing component. By means of the spring-loaded balls that latch in the installation frame in particular in a releasable manner, the housing component can be secured and held in the installation frame reliably and in a simple manner. The housing component can be released from the installation frame in a simple manner as necessary.
In a further embodiment, the installation frame is formed in such a way that the housing component is introducible into the inner region of the installation frame from two sides thereof and is latchable with the installation frame. The frame is usable in two installation positions in this way. By way of example, the installation frame can be configured to be installed in a first position in such a way that a first edge of the installation frame remains visible from a viewing side after installation, and to be installed in a second position in such a way that a second edge of the installation frame is no longer visible from the viewing side, for example as a result of filler being applied. It is thus possible to comply with different installation situations in a flexible manner.
In one embodiment of the method, the housing component is provided and equipped depending on configuration data specified by the customer when ordering the luminaire before the production thereof. For the customer this affords the advantage of being able to select, from a multiplicity of possible configurations, an exactly matching luminaire configuration that provides the desired effects. During the production of the luminaire, it is possible, in a cost-saving manner, to have recourse to a uniform housing component for any luminaire size, that is to say for any number and geometric arrangement of function fields. The housing component can be used in the same way for luminaires of widely varying configuration, without rework being necessary.
In a further configuration of the method, depending on the configuration data specified when ordering the luminaire, a program executable by means of a data processing device of a control arrangement of the luminaire is transferred to a storage medium of the control arrangement. The luminaire, upon the delivery thereof, is thus adapted to the selected configuration of the function fields on the control side as well.
In one embodiment of the method, equipping can comprise equipping the housing component with at least one LED carrier circuit board and an optical component assigned thereto successively.
It goes without saying that the above embodiments and developments of the invention can analogously find applications to the luminaire according to the invention and also to the housing component according to the invention and to the method of the invention.
The above embodiments and developments can be combined with one another, if practical, in any desired way. Further possible embodiments, developments and implementations of the invention also encompass not explicitly mentioned combinations of features of the invention described above or below with regard to the exemplary embodiments. In particular, in this case the person skilled in the art will also add individual aspects as improvements or supplementations to the respective basic form of the present invention.
The present invention is explained in greater detail below on the basis of the exemplary embodiments indicated in the schematic figures of the drawings, in which:
The accompanying drawings are intended to convey a further understanding of the embodiments of the invention. They illustrate embodiments and, in association with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the advantages mentioned become apparent in view of the drawings. The elements of the drawings are not necessarily shown in a manner true to scale with respect to one another.
In the figures of the drawings, identical, functionally identical and identically acting elements, features and components are provided in each case with the same reference signs—unless explained otherwise.
The housing component 2 in
The housing component 2 has a base 3, the main extension plane 10 of which is indicated schematically in
The housing component 2 is formed in a troughlike fashion, wherein the base 3 forms a bottom 19 of the housing component 2 and the housing component 2 furthermore has side walls 20a to 20d, which are formed in a manner extending around the housing component 2 and connected to one another and, in the circumferential direction of the housing component 2, delimit an inner region 21 thereof. The housing component 2 has an open side 22 at the top in
A multiplicity of projectionlike sections 40 and 4 protrude from the base 3 in the inner region 21 upward in
Each of the sections 4 or “domes” projecting from the base 3 is formed in a domelike fashion, see
Each of the sections 4 projecting from the base 3 is formed in an identical way to the other sections 4 and has on its outer side a plurality of planar surfaces 5a to 5e oriented differently relative to the base 3. In this case, the surface 5a forms a top surface of the section 4, which top surface is substantially parallel to the plane spanned by the directions X and Y, and thus to the main extension plane 10, and is likewise substantially square, whereas the further surfaces 5b, 5c, 5d and 5e are inclined with respect to the main extension plane 10 and jointly form a lateral surface of the truncated pyramid shape, see also
Each of the sections 4 projecting from the base 3 is assigned to a function field 13 of the luminaire 1 and is arranged centrally within the function field 13. In the exemplary embodiment in
Consequently, one surface 5a parallel to the main extension 10 and a plurality of surfaces 5b-5e inclined at the same inclination with respect to the main extension plane 10 are provided in each of the function fields 13.
The base 3 of the housing component 2 has, for each function field 13, a region 9 assigned thereto, said region being formed as a heatsink. See
The housing component 2 is insertable into an installation frame 100, illustrated separately in
The installation frame 100 is formed with a substantially square basic area and has an inner region 101, the shape of which corresponds to the outer shape of the housing component 2 and which is provided for accommodating the housing component 2. The housing component 2 can be inserted into the inner region 101 from a first open side 107 and alternatively from a second open side 108 of the installation frame 100. Inner side surfaces of the installation frame 100 facing the inner region 101 are provided with edges 109 and 110 facing away from one another, wherein the edges 109, 110 are provided on all four inner side surfaces of the installation frame 100. Spring-loaded balls 35 are arranged on the exterior of the housing component 2 in the region of the side walls 20b and 20d. The edges 109, 110 form circumferential steps behind which the spring-loaded balls 35 can engage in order to hold the housing component 2 on the installation frame 100. Consequently, the housing component 2 can latch with the frame 100 by means of the balls 35 both upon insertion from the first side 107 and upon insertion from the second side 108.
Upon installation in a ceiling, for example, the installation frame 100 can thus be used in two positions, either with a visible rim 105 facing toward a viewing side, or with a rim 106 that is able to be installed invisibly toward the viewing side. In the region of the rim 106, the installation frame 100, at the circumferential exterior thereof, is equipped with structures 104 that facilitate for example the “rimless” installation, for instance by means of applying filler.
In this exemplary embodiment, the securing of the installation frame 100 in a ceiling, not illustrated more specifically in the figures, can be carried out with the aid of securing devices 102 or 103 arranged on the exterior of the installation frame 100, see
It should be pointed out at this juncture that the section A-A illustrated in
The luminaire 1 makes it possible to change between different light effects or light scenes in diverse ways by means of corresponding switching and/or control. The luminaire 1 provides a flexible and compact lighting solution that enables a wide variety of lighting effects to be achieved. For this purpose, in the case of the luminaire 1, a plurality of optical components 16, which are in each case reflectors in the exemplary embodiment illustrated, are combined with one another within the housing component 2. In particular, the optical components 16 combined with one another in the housing component 2 are formed differently and generate different emission characteristics.
Consequently, the luminaire 1 makes it possible to arrange different optical components 16 in different positions within a uniform housing component 2 in a wide variety of ways. In the exemplary embodiment shown, here an optical component 16 having an outer shape that is square in plan view is arranged in each function field 13. In
Light to be emitted by the luminaire 1 is provided by LED devices 7, which are formed as or comprise LEDs or groups of LEDs. The LED devices 7 are illustrated by way of examples in
A first LED carrier circuit board 6a is arranged in the function field 13a, said first LED carrier circuit board being secured substantially horizontally in
The optical component 16a is arranged on the LED carrier circuit board 6a in
Reference will now be made to
During operation of the LED device 7, the latter generates not only light but also heat, which is dissipated in the case of the luminaire 1, as a result of the contact between the rear side 8 of the LED carrier circuit board 6a and the top surface 5a, effectively and efficiently via the domelike section 4 into the region 9 assigned to the section 4 and formed as a heatsink. In the region 9, the heat can then be dissipated further, in particular emitted to the surrounding air by convection. Effective cooling of the LED device 7 is achieved even with a small height of the luminaire 1 and of the housing component 2.
The LED carrier circuit board 6 with the LED device 7 carried thereby and the optical component 16a can form a first assembly 27a.
A second optical component 16b, which differs from the optical component 16a, is arranged in the second function field 13b, see
Reference is made to
The LED carrier circuit board 6b in
The optical component 16b, see
The LED carrier circuit board 6b and also a further circuit board 6′ are secured to an adapter component 11 by means of screws 42, which adapter component will now be described in greater detail.
The adapter component 11, see in particular
The adapter component 11 has inclined first and second side surfaces 43 and 44 facing away from one another, the inclination of which in turn respectively corresponds to that of two opposite surfaces from among the surfaces 5b to 5e of the projecting section 4 and to which the cutout 12 is open. In other words, in a manner analogous to that for the section 4, the outer shape of which corresponds to a regular truncated pyramid having a square base area, all the surfaces 12′, 12″, 43 and 44 of the adapter component 11 are arranged with the same inclination relative to the main extension plane 10 of the base 3. The section 4 projecting from the base 3 can thus be accommodated in the cutout 12 in four angular positions, respectively offset by 90 degrees relative to one another, about the centre axis of the section 4, in such a way that the cutout 12 is substantially completely filled and the accommodated part of the section 4 in each case does not project beyond the surfaces 43 and 44.
The adapter component 11 is integrally die-cast from a metal material, for example aluminium or an aluminium alloy, for example manufactured from the same material as the housing component 2.
In order to arrange the LED carrier circuit board 6b by its rear side 8 on one of the surfaces 5b to 5e in the manner described, the LED carrier circuit board 6b is arranged on the first side surface 43 and secured by means of the screws 42, while the further circuit board 6′ is arranged on the second side surface 44 of the adapter component 11 and secured by means of further screws 42, see
Furthermore, the optical component 16b can be plugged onto the adapter component 11 and be secured and held on the adapter component 11 for example by means of suitable securing means, for instance by latching or screwing.
An assembly 27b formed with the optical component 16b, the circuit boards 6′ and 6b and the adapter component 11, see
In the bottom 19 of the housing component 2, see
The adapter component 11 thus makes it possible for the projecting section 4, without rework on the housing component 2 being necessary, also to be used for equipping the function field 13b in the manner of a wallwasher. In the case of the function field 13b, the rear side 8 of the LED carrier circuit board 6b bears regionally on the inclined surface 5b of the section 4, and regionally on the first side surface 43 of the adapter component 11. In particular, see
With regard to the region 9,
Thus a region 9 formed as a heatsink is assigned to each function field 13 and thus to each LED device 7 in order to effectively cool the LED device 7 in each case.
The function fields 13, not yet equipped in
An individual LED carrier circuit board 6 can be provided for each of the function fields 13, wherein each of the LED carrier circuit boards 6 then carries an LED device 7. However, LED devices 7 of mutually adjacent function fields 13 for which the LED devices 7 are intended to be arranged in the housing component 2 in a manner oriented relative to the projecting section 4 in the same way can also be arranged on a common LED carrier circuit board 6.
This is illustrated by way of example in
Further LED carrier circuit boards 6 are shown in
The LED carrier circuit boards 6 illustrated in
Furthermore,
Each of the LED devices 7 of the luminaire 1 is assigned to one of the function fields 13 and arranged in the respectively assigned function field 13. Within a luminaire 1, until the housing component 2 is completely equipped, LED carrier circuit boards 6 of different types, as illustrated in
With regard to
Even though the housing component 2 can be filled completely in a manner such that each function field 13 forms a luminous field, in one variant provision can be made for a sensor device 50 to be arranged in one of the function fields 13 instead of an LED device 7. The sensor device 50 could be provided on an individual circuit board provided specifically therefor, or be arranged on one of the LED carrier circuit boards 6 instead of an LED device 7. The function field 13 equipped with the sensor device 50 could furthermore be provided with an optical component adapted to the sensor device 50 and/or with a suitable covering (not illustrated) adapted to the shape of the function field 13 and to the function of the sensor device 50. The sensor device 50 can be for example a presence sensor, a brightness sensor, a moisture sensor or a temperature sensor or some other desired sensor.
The luminaire 1 is formed as a uniform luminaire comprising, in the exemplary embodiment shown, a plurality of light sources which are formed by the LED devices 7 and to which a respective optical component 16 is assigned. The plurality of light sources are switchable and/or controllable flexibly, for example individually or in different groups, in the case of the luminaire 1 for the purpose of generating different light effects.
The luminaire 1 comprises a connection and control unit 17, see
A recess 23 is introduced into the side wall 20c of the housing component 2, said recess being open toward the outer side of the housing component 2 and also extending into the base 3. The recess 23 is provided for accommodating the connection and control unit 17, which is formed in a flat fashion. The connection and control unit 17 is accommodated in the recess 23 in such a way that a main extension plane 24 of the connection and control unit 17, see
The central control arrangement 25 can comprise a DALI module for receiving a switching and/or control signal in a wired manner or a Zig Bee module for wirelessly receiving a switching and/or control signal. Electric current for the operation of the luminaire 1 is provided via a connection line 90 coupled to the connection and control unit 17. Furthermore, if switching and/or control signals are received by the control arrangement 25 in a wired manner, the connection line 90 can furthermore provide said switching and/or control signals via corresponding conductors of the connection line 90.
Nine plug-in locations are present on the control circuit board in the example illustrated in
In a variant of the luminaire 1 having high flexibility in the driving of individual function fields 13, the central control arrangement 25 makes possible a multiplicity of control channels, for example eighteen channels. In this variant, the connecting devices 18 are embodied for example as in each case four-pole plug connections, where nine plug connections are provided. In this way, two control channels can be provided for each function field, wherein one of said control channels can be used for dimming the respective LED device 7, i.e. controlling the light intensity, and the second of said control channels can be used for controlling the colour temperature of the light emitted by the LED device 7 (“tunable white”). A luminaire 1 configured in this way is highly flexibly configurable and controllable. The central control arrangement 25 provides two control channels for each LED device 7. The control channels are driven flexibly and individually with the aid of the central control arrangement 25.
Alternatively, the central control arrangement 25 can be configured for providing nine channels if only the light intensity of the individual LED devices 7 is to be controlled. Nine plug connections are provided in this case, too.
In the exemplary embodiment of the luminaire 1, power electronic components 29 as a power electronic arrangement 28 are arranged together with the LED device 7 or the LED devices 7 on the LED carrier circuit board 6 and thus “brought near” to the LED devices 7. Alternatively, at least some power electronic components 29 can be arranged on a further circuit board 6′ in the function field 13.
By means of the four-pole plug connections serving as connecting devices 18, and by means of flexible cables, for example, the LED carrier circuit board 6 is coupled to the central control arrangement 25, wherein the four contacts of the plug connections then comprise two contacts for the two control channels, one contact for the supply voltage and one contact for both. By way of example, 48 volts are provided as input supply voltage. In the case of a sensor device 50, the control channels can serve as return channels for the sensor device 50.
The voltage supply brought near via the connection line 90 is thus connected to a single splitter, which distributes the electrical power further and provides a control signal for each control channel.
As described above, the number and embodiment of the LED carrier circuit boards 6 can vary depending on the desired configuration of the luminaire 1. Likewise, it is possible to use different numbers of the provided channels in a luminaire 1.
The central control arrangement 25 comprises a data processing device 62, e.g. a processor, and also a storage medium 61. This is indicated by way of example purely schematically in
The LED devices 7 are dimmable in an analogue manner in the case of the luminaire 1 in accordance with the exemplary embodiment described above. Analogue dimming using linear regulators is provided for this purpose. Alternatively, switching regulators could be provided.
The assignment of a different number of LED carrier circuit boards 6 at different positions within the housing component 2 to a different number of control channels will be explained in even greater detail below.
There are various possibilities for driving the LED devices 7. In this case, not only is it possible to assign a control channel to a respective LED carrier circuit board 6, but it is also possible to combine a plurality of LED devices 7, independently of whether they are arranged on a common LED carrier circuit board 6 or on a plurality thereof, to form a jointly controllable group. Furthermore, it is also conceivable, in principle, to address two or more LED devices 7 arranged on a common carrier circuit board 6 via different control channels, provided that the LED carrier circuit board is configured for this purpose.
In
The arrangement in
In the configuration in
The configuration illustrated in
However, the luminaire 1 does not just make possible the configurations illustrated in
In a method for producing the luminaire 1 in accordance with the exemplary embodiment described above, the procedure as follows is adopted, for example:
A customer, for example a light designer, configures the luminaire 1, for example using software specifically provided for this purpose, and the customer can for example download said software via a data network, for instance the Internet, or operate it directly via the data network.
By way of example, the customer firstly chooses the size of the desired luminaire, for instance a luminaire size which makes possible a 3×3 grid as in
The customer then configures the function fields 13, in other words the customer selects the light effect or the light distribution which the function field 13 is intended to produce in each case. If a sensor is intended to be concomitantly incorporated, the customer likewise selects this.
The customer should then specify the desired driving possibilities, for example the extent to which the function fields are intended to be controllable separately or jointly in groups, and whether only the intensity or else the colour of the light is intended to be controllable.
Depending on the abovementioned configuration data specified by the customer in the course of the configuration of the luminaire, a housing component 2, as explained above, is provided and, for example likewise with the aid of the software, the suitable number and type of the LED carrier circuit boards 6 are determined. The latter can then be incorporated into the housing component 2 depending on the configuration data with the appropriate optical components 16 and, if necessary, adapter components 11. The required connections to the central control arrangement 25 are produced by means of flexible cables.
With the aid of the software, a program that is executable by means of the data processing device 62 of the control arrangement 25 can furthermore be provided, generated or configured, once again depending on the configuration data specified by the customer, wherein the program is then transferred to the storage medium 61 of the control arrangement 25. The control of the function fields 13 can be effected or modified by means of the program. By way of example, the same control arrangement 25 can be used for differently configured luminaires 1, the functions of said control arrangement being suitably adapted by the transfer of the program.
In the exemplary embodiment, the LED devices 7 can be connected in parallel in order to be able to drive them separately. The abovementioned program (firmware) can define a maximum control current for each group channel which addresses a control group, in order to ensure that all the light sources can supply the same light intensity in the desired manner.
In a variant of the exemplary embodiment described above, the driving of the LED devices 17 of the function fields 13 of the luminaire 1 can be implemented in a simplified manner, while the exemplary embodiment described above is highly flexible and very diverse in terms of the possible lighting effects, in a simplified embodiment, for example if simpler lighting effects and lower costs are desired, the luminaire 1 can be constructed without the central control arrangement 25. While the mechanical, optical and thermal concept explained for the exemplary embodiment described above remains unchanged, the supply of the LED devices 7 in the case of the simplified variant is carried out by an external converter 30, which can be arranged for example in the connection line 90. See the schematic illustration in
In the case of such a simplified variant, all the function fields 13 can be formed for example as downlights or as wallwashers, but a combined arrangement of downlights and wallwashers is also present in the case of the above-described simplified variant with driving via the external converter 30.
The power electronic components 29 or arrangements 28 on the LED carrier circuit boards 6 are also omitted in the simplified variant with the external converter 30. In this case, the electric current for supplying the LED devices 7 is supplied directly by the external converter 30, wherein the connection and control unit 17 of the exemplary embodiment described above, in the case of the simplified variant, now forms a connection unit 17 having e.g. only a strain relief means for the connection line 90 and plug connections for connecting the LED carrier circuit boards 6 via flexible cables.
In further variants, proceeding from the above-described exemplary embodiment with a central control arrangement 25, a reduced number of channels could be provided, for example for simpler applications in which nevertheless a plurality of individually controllable light effects are intended to be combined in the luminaire 1. In such a case, the number of control channels could be less than nine, for example four or eight.
Consequently, by means of the flexible driving, the luminaire 1 makes possible the presentation of different lighting effects and different light scenes and also the illumination of a large spatial region in conjunction with a very compact design of the luminaire 1. This is achieved without a mechanical adjustment of individual light sources being provided. A flexible and modular coupling of different numbers of LED carrier circuit boards 6 becomes possible. Furthermore, it becomes possible to arrange different optical components 16, for example different reflectors, at different positions in a uniform, single housing component 2 in a selectable combination, without the housing component 2 having subsequently to be modified. For any size of the luminaire 1, that is to say for a given number and geometric arrangement of function fields 13, only one housing component 2 of a single type has to be manufactured, which advantageously reduces the costs for die-casting tools and the diversity of component parts. The housing component 2 is furthermore optimized with regard to heat dissipation and enables efficient cooling of the LED devices 7. The luminaire 1 has a small height and thus also a comparatively small space requirement. The voltage supply and the driving of the LED devices 7 are accomplished in a space-saving manner.
Although the invention has been fully described above on the basis of preferred exemplary embodiments, it is not restricted thereto, but rather can be modified in diverse ways. Without further elaboration, it is believed that one skilled in the art can, using the preceding description, utilize the present invention to its fullest extent. The preceding preferred specific embodiments are, therefore, to be construed as merely illustrative, and not limitative of the remainder of the disclosure in any way whatsoever.
In the foregoing and in the examples, all temperatures are set forth uncorrected in degrees Celsius and, all parts and percentages are by weight, unless otherwise indicated.
The entire disclosures of all applications, patents and publications, cited herein and of corresponding German application No. 102018001653.7, filed Mar. 2, 2018, are incorporated by reference herein.
The preceding examples can be repeated with similar success by substituting the generically or specifically described reactants and/or operating conditions of this invention for those used in the preceding examples.
From the foregoing description, one skilled in the art can easily ascertain the essential characteristics of this invention and, without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usages and conditions.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102018001653.7 | Mar 2018 | DE | national |
