Patent Application
20210262645
The invention relates to a luminaire for work events, film events or sports events, comprising at least one retaining element to which at least one LED module is pivotably fastened and can be supplied with a voltage via leads.
Luminaires are offered in a variety of types, for example as interior luminaires in the form of ceiling- or wall-mounted luminaires. The luminaires may accommodate one or more lamps which can be supplied with voltages. The luminaires consist either of glass, ceramics, or plastics, wherein a lampshade can be additionally provided which optionally has a frame with a fabric cover. Apart from this, recessed luminaires are known which are embedded either into a wall or into a ceiling. All of these luminaires are mainly usable indoors. Furthermore, there are various housing shapes for luminaires which are employed outdoors, for example as gardening illumination or house illumination in the form of recessed luminaires, wherein an assembly of the recessed luminaires can be accomplished in a roof superstructure or in an entrance area. Moreover, watertight designs of various gardening luminaires are embedded into the ground or existing terrace surfaces. In the external area, it is necessary for this to observe the regulations in view of humidity protection. Many of the luminaires are provided for stationary assembly and are not transportable.
Apart from this, there is a market for high-performance luminaires which are used, for example, for illuminating working areas, or as film equipment or in sports events. In such cases, high light intensity is important, as such luminaires are typically arranged at rather great heights of more than 3 m, in individual cases even above 10 m. Moreover, such luminaires might be fastened to a stand and can thus be positioned for the different intended applications at the required height.
Due to amendments to the regulations and, in some cases, the elimination of lamps, for example halogen lamps, it is necessary to develop a new luminaire concept which is mainly directed to LEDs. On the one hand, light intensity is to be increased thereby, and on the other hand, power consumption is to be reduced as much as possible.
Therefore, it is an object of the present invention to provide a novel luminaire as work, film or sports events luminaire which is characterised by a robust and simple construction and provides high flexibility in the outdoor use.
To achieve the object, the at least one LED module has an approximately triangular, flat basic form, a lateral surface being fitted with LEDs, preferably power LEDs, and the rear side of the LED module being designed to emit thermal radiation, wherein at least on one side edge, connecting elements for the retaining element are provided, and the retaining element consists of one polygonal frame or two straight fastening supports. Further advantageous embodiments of the invention can be taken from the subclaims.
By the use of an approximately triangular, flat LED module, an extremely compact luminaire is created which is easy to transport and offers the possibility of being employed as wall, ceiling, or outdoor luminaire. The complete construction is kept flat by the basic form of the LED modules used and does not result in any restrictions in the assembly. These advantages normally do not exist with a stationary assembly, while in contrast, the at least one LED module may equally be used for variably erected luminaires. The LED modules have connecting elements for a retaining element at one side edge, so that on the one hand, a stationary assembly is possible, but due to the eyes, a pivoting of individual LED modules is also possible. In such a case, the retaining element is designed such that it can receive or support the connecting elements of the LED modules, wherein due to an extremely stable design, sufficient support can be ensured by the connecting elements if the retaining elements are simultaneously optionally mounted to a wall or a ceiling, or are possibly employed to be used with a stand.
Another advantage results from the fact that the luminaire is exclusively fitted with LEDs, so that in the external area, a low voltage can be used. A movable linkage of an LED module to the retaining elements furthermore permits the orientation of the LED modules in a desired direction and a quick possibility of reorientation, if necessary. By the selection of a suited retaining element and suited connecting elements, the pivotability of the LED modules is moreover ensured, whereby, starting from a fixed location, a change of the orientation of the illumination is possible.
A further development of the invention provides for a plurality of LED modules to be joined and connected to a semicircle or full circle via the retaining element. Here, a connection is accomplished, for example, via the connecting elements and one retaining element, wherein all LED modules can be supplied with a voltage via a power cord. By the arrangement of the LED modules to a semicircle or full circle, it is possible to achieve high light intensity within a very restricted space, as it is required, for example, as work luminaire. As an alternative, it is possible that a plurality of LED modules is joined and connected via the retaining element in a strip form. Such an arrangement of the LED modules permits the manufacture of a light band which is mounted to a wall or preferably to a ceiling, wherein, given a corresponding size, several ones of the light bands can be arranged spaced apart at the ceiling. The light intensity of the LED modules is so high that not only small but even large halls can be completely illuminated. To supply the LED modules with a voltage, the at least one LED module is supplied with a supply voltage via a cable connection, or several LED modules are interconnected and can be supplied with a supply voltage at least via one cable connection.
In a further development of the invention, the retaining element consists of a polygonal frame which extends over 180° or 360°. A polygonal frame is employed because the LED modules are triangular and are fastened to the retaining elements with one side edge. To cover an arc of 180°, in such a case, three LED modules with at least three straight sections of the retaining element are required.
If an arc of 360° is to be achieved, the number of LED modules required is correspondingly twice as high. Here, in a further development of the inventive idea, it is easily possible that two polygonal frames of 180° each are connected to each other via a joint, so that by folding open these two frames, a full circle of 360° is achieved. By this measure, transport will be essentially easier to handle and thus facilitated.
In a further development of the invention, the retaining element consists of two fastening supports which are fastened to the wall or ceiling and receive a plurality of neighbouring LED modules such that a light band is formed. To this end, the individual LED modules are arranged alternately in opposite directions with an apex of the triangle formed by the two equal-sided side edges. The length of such a light band is not relevant in this case and can be optionally extended subsequently. The light bands are preferably employed in production halls where high light intensity is desired, for example in aeroplane assembly.
In case of polygonal frames that extend over 180° or 360°, the at least one, preferably several, LED module(s) can be at least partially pivoted about the frame, whereby the area to be illuminated will be influenced. With a full circle of 360°, at a corresponding height of the luminaire, an illumination of a nearly circular area on the floor results. If opposed LED modules are partially pivoted, the illumination of a circular shape can pass over into an elliptic shape thereby. Such illumination areas are preferably required for road or rail construction. A completely fitted luminaire in a 360°-design here reaches 155,000 Lumen.
In a further development of the invention, the apices of the triangle can be lifted or lowered in a direction perpendicular to the LED module. By pivoting the modules out of the LED module's plane, it is possible to vary the area to be illuminated, wherein, depending on the selected assembly of the luminaire, the individual LED modules are either lifted or lowered with their apices out of the module plane. If all LED modules are pivoted completely, the radius of the light cone can be enlarged. By lifting or lowering the individual LED modules, these may be set up to a pyramid or conical form. To achieve sufficient stability in the respective position of the LED modules, the lifted triangular apices are adjustable continuously, or lockable in a plurality of locking stages. This prevents, for example, that in case of arising wind loads, individual LED modules are moved out of the original deflection.
A locking of the triangle apices of an LED module may be effected, for example, by a metal band which is arranged between two permanent magnets, wherein the metal band is connected to the bush via a joint, and the metal band has a curvature at its free end leading to a compensating movement when the LED modules are lifted, and the metal band remains between the permanent magnets.
For stability reasons and to facilitate the construction, the at least one LED module is equipped with eyes which receive a retaining element in the form of a tube, a round strut, or a round fastening support. Thus, the LED modules can be pivoted about the bow, the strut, or the fastening support, respectively, whereby by a corresponding size of the respective eyes and retaining elements, an excellent stability is achieved. The retaining element can consist, for example, of a round fibre, glass fibre or carbon fibre rod. To achieve a construction extending over 180° or 360°, the fibre, glass fibre, or carbon fibre rods are connected to each other via corner connectors. The corner connectors themselves are connected to a central part via tensioning wires, similar to a wheel hub, so that after the joining of all components of the retaining elements, a pre-tension directed to the centre is achieved to provide the required strength. The central part here takes the function of a hub as it is present in a wheel.
To assemble the LED modules, the rods are to this end previously pushed through the existing eyes of the LED modules and inserted into existing bores of the corner connectors and fixed by means of screws. To this end, the supporting rods have a diameter corresponding to the inner diameter of the eye. In addition, between the eyes and laterally of the LED modules, bushes are pushed up to the corner connectors, so that a lateral slipping of the LED modules is prevented. The eyes of the LED modules are additionally arranged laterally offset from the centre, so that, for example, two LED modules may be fastened to one tube if a design other than a hexagonal shape is desired. The fibre, glass fibre, or carbon fibre rods as tubes here have the function of a guide rod, while the pushed-on bushes perform a lateral fixing between the corner connectors.
By the LED modules being equipped with a plurality of individual LEDs, preferably power LEDs, the dissipation of the heat formed is obligatory. For this reason, the rear side of the LED modules is equipped with cooling fins, while the front side of the LED modules is provided with a plastic cover. The plastic cover is of a diffused design for light scattering purposes to reduce the baffling effect of individual LEDs. Moreover, the plastic cover can be provided with punctual or linear elevations, or optionally with corrugations, thus achieving a surface enlargement and thereby an improvement in light scattering.
In a further development of the invention, the at least one LED module is equipped with LEDs of different colours, in particular RGB colours. This makes it possible to have each individual LED module or groups of LED modules light up in different colours. It is moreover possible to perform a continuous change of colours and to adapt the colours to the intended purpose. It is furthermore provided that the at least one LED module can be dimmed to perform brightness control, where preferably a GMX controller is used by which the individual LED modules are controlled.
To install the luminaire in a 180° or preferably 360° arrangement of the individual LED modules at a selected working height, the central part in the form of a bush is furthermore used as fastening means, wherein a stationary assembly or a variable, height-adjustable assembly via a stand is possible. Via a Bluetooth connection, it is possible to switch the luminaire on and off, and to dim it. Moreover, it is also possible to adjust a certain colour spectrum.
The present invention is characterised by a high adaptation flexibility and an extremely stable construction, whereby it will meet the provided intended purpose in the field of work luminaires, film, or sports events. Individual luminaires can here be embodied as polygonal luminaries extending over 180° or 360°, respectively. As an alternative, it is possible to produce a light band by the LED modules which can be used for illuminating large halls, wherein arbitrary lengths are possible. The stability of the luminaire is achieved in that a hub is provided in the centre and individual retaining elements are polygonally connected by means of corner connectors, wherein the corner connectors can be additionally tensioned with the central part by tensioning wires, and thus the design of the luminaire will lead to a high stability after its assembly. Of course, the individual wires can be re-tensioned, if required, to protect them from material wear or to exchange individual LED luminaires. By the dimmability and the adjustment of the colour temperature, the luminaire can be adjusted to the required demands, whereby a high degree of application possibilities is ensured.
The invention will be further illustrated more in detail with reference to the figures.
In the drawings:
By the pivotability of the LED modules 1, a variable light cone can be adjusted, taking into consideration the height where the LED modules 1 are arranged.
In a normal case, when all LED modules 1 are lying in the plane, the illumination will be circular and can optionally be enlarged in its diameter by pivoting all LED modules 1. By pivoting two LED modules 1 located opposed to each other, the illuminated area can be transferred from the round shape to a nearly elliptic shape. Such an illumination is required, for example, in repair works in road and rail construction.
The total area of the cooling fins 15 is here designed such that the arising heat of the power LEDs arranged underneath the plastic cover 2 can be completely dissipated to the back.
In order to absorb radial forces of the luminaire 20, each corner connector 22 is connected to a sleeve 30 via a threaded bush 29, wherein two tensioning wires 31 connected to a bush 32 located in the centre and diverging in a V-shape originate from the sleeve 30. The bush 32 here is similar to a bicycle hub while the tensioning wires 31, the sleeve 30, and the threaded bush 29 correspond to a spoke. By retensioning the corner connectors 21, for example, by a threaded bolt which can be screwed into the threaded bush 29, an extremely stable ring is created which locks and secures all LED modules 1 in their respective positions. The bush 32 furthermore serves to receive the end of a stand or the like, so that the luminaire 20 can be arranged at a desired height. Here, it is easily possible that the luminaire 20 is held by a ceiling or by a crane. However, the stand, that is height-adjustable and thus offers the possibility of placing the luminaire 20 at the desired height, has priority.
The individual LED modules 1 are here pivotable out of the plane of the luminaire 20 relative to the tube 25 and are held by a locking in the respective position. Here, it is possible that only individual LED modules 1 are pivoted, preferably the opposed LED modules 1, or that all LED modules 1 are uniformly pivoted out of the plane whereby an enlargement of the illuminated area is achieved. The locking of the individual LED modules 1 relative to the retaining element 21 can be effected, for example, by fine teeth with clamping locking means on the tube 25 or on the bush 8, respectively.
The assembly of the luminaire 20 is effected such that first of all, the inner corner elements 24 are connected to the threaded bush 29 via a clamping screw, which are in turn connected to the bush 32 via the sleeve 30 and the tensioning wires 31.
The tube 25 is shifted through the eyes 8 of the LED modules 1, wherein simultaneously, the central bush 27 and the lateral bushes 26, 28 can be pushed on. Preferably, a weight-saving material is used for the bush 26, 27, 28, for example, a carbon tube section. An LED module 1 connected to the tube 25 in this manner is then placed against the inner corner connectors 24 and screwed by means of the outer corner connectors 23 such that the tube 25 is retained in a clamping manner. Due to the selected screwed joint of the corner connectors 22, it is here possible to exchange an individual, optionally defective LED module 1 at any time, if this is required.
The leads of the LED modules 1 are represented in
In case of the light band 40, the LED modules 1 are preferably arranged in one plane, where likewise a locking via fine teeth and locking means can be effected between the retaining means 41, 42 and the bushes 8 of the LED modules 1. Further fastening possibilities, for example by supporting the apices facing to the opposite retaining element 41, 42, are also conceivable for the LED modules 1. In individual cases, however, it can be desired to slightly angle the LED modules 1 out of the modules' plane so that the illuminated area can be varied.
By folding open several LED modules 1, it is in contrast achieved that a nearly circular area with a larger diameter is illuminated. The diameter of the respective illuminated area furthermore depends on the position of the luminaire 20, the higher the position is selected by extending the stand 43, the more the illuminated area 45 or 46, respectively, is enlarged.
To achieve a pivotability of the LED modules 1, a locking of the triangle apices of an LED module 1 is effected by a metal band 50 which is connected at one end to the bush 32 via a swivel joint 51. The metal band 50 extends, starting from the swivel joint 51, initially in a straight line and passes over into a curvature 52 which has a swelling 53 on its end. The curvature 52 of the metal band 50 is required so that during a pivoting movement, the metal band 50 extends, during the complete motion sequence, between a fixing means in the form of a magnetic retainer 54. The magnetic retainer 54 is connected to the bottom side of the LED module 1 via studs 55 and essentially consists of a tab 56 with a magnet mount 57 which is represented to be round in the shown exemplified embodiment. In the magnetic retainer 57, two opposed permanent magnets 58, 59 are located which are fixed at a distance with respect to each other, so that the metal band 50 can slide to and fro between the permanent magnets 58, 59. The permanent magnets 58, 59 here take care that the metal band 50, and thus also the LED module 1, are securely held in any position.
The exemplified embodiment shows one of several possibilities, however, any other type of locking for the individual LED modules 1 can be provided in the luminaire.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2018 006 506.6 | Aug 2018 | DE | national |
This application is the U.S. national stage of International Application No. PCT/DE2019/200099, filed on 2019 Aug. 15. The international application claims the priority of DE 102018006506.6 filed on 2018 Aug. 17; all applications are incorporated by reference herein in their entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/DE2019/200099 | 8/15/2019 | WO | 00 |
