Luminaire for Work Events, Film Events or Sports Events

Abstract

The invention relates to a luminaire (20) for work events, film events or sports events. According to the invention, in order to produce a robust and simple construction of a luminaire (20), while also providing high flexibility in the use thereof and reduced power consumption, the at least one LED module (1) of such a luminaire (20) 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 (1) being designed to emit thermal radiation. Connecting elements are formed on one of the side edges, which connecting elements are used by means of suitable retaining elements (21) to construct the luminaire (20). The particular advantage of the luminaire (20) is that high light intensity can be achieved in the field of use of the luminaires (20), namely for work events, film events or sports events. Because of the pivotability of individual LED modules (1), the area to be illuminated can additionally be influenced.

Claims

1. Luminaire (20), in particular as a work, film events, or sports events luminaire, comprising at least one retaining element (21, 41, 42) to which at least one LED module (1) is pivotably fastened, and to which a voltage can be supplied via leads, characterized in that the at least one LED module (1) 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 (1) being designed to emit thermal radiation, wherein at least at one side edge, connecting elements for the retaining element (21) are present, and the retaining element (21) consists of a polygonal frame or two straight fastening supports.

2. Luminaire (20) according to claim 1, characterized in that a plurality of LED modules (1) is joined and connected to a semicircle or a full circle via the retaining element (21), or that a plurality of LED modules (1) is joined and connected in a strip form via the retaining element (41, 42).

3. Luminaire (20) according to claim 1, characterized in that the at least one LED module (1) can be supplied with a supply voltage via a cable connection, or that a plurality of LED modules (1) are interconnected and can be supplied with a supply voltage at least via a cable connection.

4. Luminaire (20) according to claim 1, characterized in that the retaining element (21) consists of a polygonal frame which extends over 180° or 360°, and/or two polygonal frames of 180° each are connected to each other via a joint, and/or the retaining element (41, 42) consists of two fastening supports which are fixed to the wall or ceiling and receive a plurality of neighbouring LED modules (1) such that a light band (40) is formed.

5. Luminaire (20) according to claim 1, characterized in that the at least one LED module (1) can at least partially be pivoted around the frame.

6. Luminaire (20) according to claim 1, characterized in that the LED modules (1) are oriented, after the assembly, spaced apart with respect to each other with a triangle apex towards the centre of the semicircle or full circle, or the LED modules (1) are alternately oriented with a triangle apex in opposite directions.

7. Luminaire (20) according to claim 1, characterized in that the triangle apices can be lifted or lowered in a direction perpendicular to the LED module's plane, and/or the lifted triangle apices can be locked in a plurality of locking stages or continuously.

8. Luminaire (20) according to claim 1, characterized in that a locking of the triangle apices of one LED module (1) is accomplished by a metal band (50) which is arranged between two permanent magnets (58, 59), wherein the metal band (50) is connected to the bush (32) via a joint (51), and the metal band (50) comprises a curvature (52) at its free end which results in a compensation movement when the LED module (1) is lifted, and the metal band (50) remains between the permanent magnets (58, 59).

9. Luminaire (20) according to claim 1, characterized in that the individual LED modules (1) can be set up to a pyramid or conical shape.

10. Luminaire (20) according to claim 1, characterized in that the at least one LED module (1) is equipped with eyes (8) which receive a retaining element (21, 41, 42) in the form of a tube (25), a round strut, or a round fastening support.

11. Luminaire (20) according to claim 1, characterized in that the retaining elements (21, 41, 42) consist of a round fibre, glass fibre, or carbon fibre rod, wherein the retaining elements (21) are equipped with corner connectors (22) which are connected to a bush (32) via tensioning wires (31).

12. Luminaire (20) according to claim 1, characterized in that between the corner connectors (22), a tube (25) is arranged onto which bushes (26, 27, 28) can be pushed for positioning the LED modules (1), wherein the LED modules (1) are equipped with two eyes (8) laterally offset to the centre at one side edge.

13. Luminaire (20) according to claim 1, characterized in that the rear side of the LED modules (1) is equipped with cooling fins (6, 15), and/or the front side of the LED modules (1) is equipped with a plastic cover (2) which is provided with elevations (5) or corrugations for light scattering and to enlarge the surface.

14. Luminaire (20) according to claim 1, characterized in that the at least one LED module (1) is fitted with LEDs of different colours, in particular RGB colours, and/or the at least one LED module (1) can be dimmed, and/or the at least one LED module (1) can be controlled via a controller, preferably a GMX controller.

15. Luminaire (20) according to claim 1, characterized in that the bush (32) is provided as fastening means for the assembly at a selected working height, wherein a stationary assembly or a variable, height-adjustable assembly via a stand (43) is performed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the drawings:

[0025] FIG. 1 shows a perspective plan view onto an individual LED module,

[0026] FIG. 2 shows a perspective bottom view of an individual LED module,

[0027] FIG. 3 shows a plan view onto the LED module according to FIG. 1,

[0028] FIG. 4 shows a side view of the LED module according to FIG. 1,

[0029] FIG. 5 shows a plan view onto a luminaire having altogether six LED modules and one retaining element in the form of a polygonal bow with corner connectors and tensioning elements,

[0030] FIG. 6 shows a plan view onto a light band having a plurality of LED modules to be fastened to a wall or a ceiling, and

[0031] FIG. 7 shows a perspective view of a luminaire having LED modules arranged in one plane and a representation of the illuminated area,

[0032] FIG. 8 shows a perspective view of a luminaire having LED modules partially folded open to the bottom and a representation of the illuminated area, and

[0033] FIG. 9 shows an enlarged partial view of the bottom view of the LED module with fixing means.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] FIG. 1 shows an LED module 1 in a perspective plan view which consists of a light-transparent plastic cover 2 and a rear heat sink 3. The shape of the LED module 1 is an equal-sided triangle, so that several LED modules 1, arranged one next to the other, can be joined to a semicircle or full circle, or to a light band, respectively, wherein in case of the light band, the LED modules 1 are arranged alternately with their respective apices. The shape of the LED module is an equal-sided triangle, so that a joining of the side edges of the same lengths is possible without any problems. The upper plastic cover 2 is bolted to the heat sink 3 via studs 4, the heat sink 3 simultaneously forming the rear side of the LED module 1. The plastic cover 2 here preferably consists of a translucent material so that the light emitted by the power LEDs can exit through the plastic cover 2 to the outside in a scattered manner. To enlarge the surface, the plastic cover 2 is provided with straight rounded elevations 5 at equidistant distances. The elevations 5 pass over into a curved form in the marginal region, following the shape of the plastic cover 2. The heat sink 3 consists of individual cooling fins 6 which are arranged at the rear side across the complete width of the LED module 1. The cooling fins 6 are straight in the central region and are provided with a rounding 7 in the edge region. Two integrally formed eyes 8 with a bore 9 permit to fix one individual LED module via a non-depicted retaining element. By the eyes 8 with bores 9, it is here possible to arrange the LED modules 1 in a plane in which the retaining element is also arranged, wherein the individual LED modules 1 can be pivoted out of the plane. During the construction of a luminaire having six individual LED modules 1 extending over 360°, it is thus possible to lift the apices of the LED modules 1 directed to the centre, whereby the shape of a pyramid is formed.

[0035] 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.

[0036] 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.

[0037] FIG. 2 shows the LED module 1 with the upper plastic cover 2 and the heat sink 3 in a perspective bottom view. From this view, it is clear that the heat sink 3 shows a straight, linear edge extension 10 of the cooling fins 6 in the central region of the LED luminaire 1, while this edge extension passes over into a curvature 11 in the marginal region. To avoid damages of the individual cooling fins 6, a plurality of integrally formed supports 12 are provided which slightly project over the cooling fins 6. This prevents individual cooling fins 6 from being bent which can easily occur in the harsh handling on a construction site. A voltage cable can be connected via screwed connections 13 which are standard PG screwed joints. Here, it is possible that one individual LED module 1 is connected with a cable, but a connection to further LED modules can be equally established by means of the second screwed connection 13 if these are, for example, assembled to a luminaire in a 360° arrangement. By the eyes 8 with bores 9 and a suited retaining element, a pivoting relative to the retaining element is possible to orient the individual LED modules 1 to a certain geometric shape. By the size of the cooling fins 15 it is here ensured that there is a large surface to dissipate the arising heat of the power LEDs arranged underneath the plastic cover 2.

[0038] FIG. 3 shows a plan view of an LED module 1 with a view onto the plastic cover 2. Bolting to the rear side, namely the heat sink 3, is effected by the studs 4 which are arranged distributed for the complete edge region of the LED luminaire 1. The two eyes 8 permit to pivot the individual LED modules 1 within a suited retaining element.

[0039] FIG. 4 shows a side view of the LED module 1 with the upper plastic cover 2 and the lower heat sink 3 with a view onto the screwed connections 13 and eyes 8. From this view, the height of the individual cooling fins 15, which have an essentially greater height compared to the plastic cover, becomes clear.

[0040] 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.

[0041] FIG. 5 shows a plan view of a luminaire 20 with altogether six LED modules 1. The individual LED modules 1 are represented in FIGS. 1 to 4 and have been described in detail. FIG. 5 now shows an assembly of six LED modules 1 which are connected to each other via a retaining element 21 by means of the eyes 8. The retaining element 21 consists of corner connectors 22 which are formed of two pieces, namely an outer corner connector 23 and an inner corner connector 24. The outer and inner corner connectors 23, 24 are connected to each other via non-depicted screwed joints and are provided for receiving a tube 25, one corner connector 22 each receiving two tubes 25. Just as with the luminaire 20, six LED modules 1 are employed, there are also six corner connectors 22 which are each connected to each other via a tube 25. Three bushes 26, 27, 28 are pushed onto the tube 25, the bush 27 coming to rest between the two eyes 8 of one LED module 1, while the bushes 26 and 28 are arranged laterally with respect to the bushes 8. By means of the bushes 26, 27, 28, a lateral slipping of the LED modules 1 on the tube 25 between the corner connectors 22 is prevented. The eyes 8 are here arranged offset from the centre with respect to the LED module 1, so that optionally, two LED modules 1 can be pushed onto one tube 25 and fastened. Thereby, it is possible to enlarge the represented luminaire 20 by at least one further LED module 1, optionally by up to six further LED modules 1.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The leads of the LED modules 1 are represented in FIG. 2 and are located below the shown LED modules 1 in FIG. 5. The lead wire can here be wound up for transport over angle sections 32 radially projecting to the outside, whereby the outer dimensions of the luminaire 20 are not changed and a possibility is created to accommodate the luminaire 20 in a carrier bag.

[0047] FIG. 6 shows a plan view of a light band 40 which is provided for receiving a plurality of LED modules 1 to be fastened to a wall or ceiling. The individual LED modules 1 are pushed onto a retaining element 41, 42 for this purpose. The retaining element 41, 42 can, just as with the luminaire 20, consist of an inner tube and an outer bush, wherein the bushes prevent a lateral shifting of the LED modules 1. In this manner, a uniform distance between the LED modules 1 can be maintained. The length of the retaining elements 41, 42 is determined by the desired length of the light band 40, where it is easily possible that by means of a coupling or a sleeve, a plurality of individual retaining elements 41, 42 is extended as desired. The construction of the LED modules 1 corresponds to the representation in FIGS. 1 to 4 and the pertaining description.

[0048] 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.

[0049] FIG. 7 shows a perspective representation of a luminaire 20 with LED modules 1 arranged in one plane. The luminaire 20 is arranged on a stand 43 which is received in the bush 32 and has the required stability with a tripod 44. Depending on the height of the luminaire 20, an area 45 is here illuminated which, with this deflection of the individual LED modules 1, nearly corresponds to a circle.

[0050] FIG. 8 shows a perspective representation of a luminaire 20 with two LED modules 1 folded open to the bottom. The luminaire also rests on a stand 43 with a tripod 44. Due to the two opposite LED modules 1 which are folded open to the bottom, a nearly elliptic area 48 is illuminated.

[0051] 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.

[0052] FIG. 9 shows a perspective partial view of the rear side of an LED module 1. Essentially, the heat sink 3 can be seen here, while the LEDs are arranged on the opposite side. The LED module 1 is held by tensioning wires 31 which are guided, starting from a bush 32, to a hexagonal retaining element. The LED modules 1 are here, as already described, connected to the retaining element via eyes.

[0053] 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.

[0054] 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.

LIST OF REFERENCE NUMERALS

[0055] 1 LED module [0056] 2 plastic cover [0057] 3 heat sink [0058] 4 stud [0059] 5 elevation [0060] 6 cooling fin [0061] 7 rounding [0062] 8 eyes [0063] 9 bore [0064] 10 edge extension [0065] 11 curvature [0066] 12 supports [0067] 13 screwed connection [0068] 15 cooling fin [0069] 20 luminaire [0070] 21 retaining element [0071] 22 corner connector [0072] 23 corner connector [0073] 24 corner connector [0074] 25 tube [0075] 26 bush [0076] 27 bush [0077] 28 bush [0078] 29 threaded bush [0079] 30 sleeve [0080] 31 tensioning wire [0081] 32 bush [0082] 40 light band [0083] 41 retaining element [0084] 42 retaining element [0085] 43 stand [0086] 44 tripod [0087] 45 area [0088] 46 area [0089] 50 metal band [0090] 51 joint [0091] 52 curvature [0092] 53 swelling [0093] 54 magnetic retainer [0094] 55 stud [0095] 56 flap [0096] 57 magnet mount [0097] 58 permanent magnet [0098] 59 permanent magnet