Luminaire

Abstract

A luminaire, in particular as a table, camping, work, party or garden luminaire, comprising at least one mounting, one supply voltage terminal, and one fastening element for at least one LED light. The LED luminaire is comprised of at least one LED panel that is movably articlulated at the fastening element. The object is to provide an LED panel that can be made available in a small-dimensional flat design and that can prevent an overheating of the individual LEDs.

Claims

1. A luminaire (10, 20, 30) comprising at least one mounting, one supply voltage terminal, and one fastening element for at least one LED light, wherein the LED luminaire is made up of at least two LED panels (1, 15) which are movably articulated at the fastening element, and wherein said at least two LED panels each contains a catch (21) at the outer periphery of one side and a pin (22) at the outer periphery of the other side, such that said at least two LED panels are completely fanned out when opened.

2. The luminaire (10, 20, 30) according to claim 1, wherein an even or uneven number of said at least two LED panels (1, 15) are articulated at one or several fastening elements connected to each other.

3. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) are fastened at the level of the mounting.

4. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) can be provided with a supply voltage via a pin-and-socket connector.

5. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) comprise LEDs of different colours.

6. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) are dimmable.

7. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) may be controlled via a control.

8. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) are configured to be foldable, or that the LED panels are connected to the fastening element via a releasable fastening clip.

9. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) swivel about an axis.

10. The luminaire (10, 20, 30) according to claim 9, wherein the at least two LED panels (1, 15) swivel independently from each other.

11. The luminaire (10, 20, 30) according to claim 1, wherein the fastening element consists of a gusset plate which comprises a central section originating from which star-shaped lugs are integrally formed, wherein the at least two LED panels (1, 15) may be placed onto the free ends of the lugs, and the at least two LED panels (1, 15) include, to this end, receiving elements at their back.

12. The luminaire (10, 20, 30) according to claim 1, wherein the fastening element is comprised of individual lugs which are mounted to swivel about a centre of motion, wherein the at least two LED panels (1, 15) may be placed onto the free ends of the lugs and the at least two LED panels (1, 15) include receiving elements at their back to this end.

13. The luminaire (10, 20, 30) according to claim 1, wherein the fastening element consists of lugs (11) which are each connected with one of the at least two LED panels (1, 15), and that several lugs (11) are rotatably mounted via a gudgeon (12).

14. The luminaire (10, 20, 30) according to claim 1, wherein the fastening element consists of an angular bow to which the at least two LED panels (1, 15) are held by means of fastening clips.

15. The luminaire (10, 20, 30) according to claim 14, wherein the bow has a central part which is provided for fastening the luminaire (10, 20) to the mounting.

16. The luminaire (10, 20, 30) according to claim 11, wherein the mounting consists of a stand (22) or a bar, and that each of the at least two LED panels is connected to the mounting via the gusset plate, the swivelling lugs (11) or the central part of the bow.

17. The luminaire (10, 20, 30) according to claim 1, wherein the at least two LED panels (1, 15) are comprised of a cooling body with LEDs (3, 17) which are arranged on an insulation layer and are connected to each other via electrically conductive connections and to a connector or a bushing of a supply voltage terminal.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be further illustrated again below with reference to the figures.

(2) In the drawings:

(3) FIG. 1 shows a rectangular LED panel in a plan view,

(4) FIG. 2 shows, in a plan view, the assembly of several LED panels according to FIG. 1 into a luminaire in a fanned out arrangement and in an arrangement where they are partially shifted one over the other,

(5) FIG. 3 shows, in a plan view, an alternative embodiment of the LED panels in an arrangement of several LED panels which are partially shifted one over the other,

(6) FIG. 4 shows, in a plan view, an alternative embodiment of a luminaire with a fan-like arrangement as can already be seen in FIG. 3, and, in a detailed drawing, a catch means for the individual LED panels,

(7) FIG. 5 shows the fanned-out LED panels according to FIG. 2 in an enlarged view,

(8) FIG. 6 shows the luminaire according to FIG. 5 with a stand,

(9) FIG. 7 shows a round gusset plate with one-piece lugs in a star shape onto which LED panels are attached, and

(10) FIG. 8 shows LED panels attached to an angular bow with clips.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(11) FIG. 1 shows, in a plan view, an LED panel 1 that can be used for setting up a luminaire, in particular as a table, camping, work, party or garden luminaire. The LED panel 1 consists of a rectangular support element 2 which is preferably made of metal, in particular of aluminium or copper. After the application of a protective layer, individual LEDs 3 are arranged thereon in parallel rows, wherein the distance of each LED 3 with respect to the adjacent LEDs 3 has been selected such that the generated heat may be uniformly emitted to the support element 2 and there will be no mutual heat influence of the LEDs 3. The distance of the LEDs 3 is here optimised such that the heat may be directly emitted into the support element 2 and from there to the surrounding area. All LEDs 3 are embedded in a gel layer 4 which protects the LEDs 3 from destruction and moreover offers moisture protection. The LEDs 3 are connected to each other on the support element 2 above the insulation layer in an electrically conductive manner such that all LEDs 3 may simultaneously also be provided with voltage optionally in groups via a connecting cable 5. To this end, in the shown embodiment, there are non-visible thin electric connection wires on the insulation layer which are guided to the connecting cable 5.

(12) By the support element 2 consisting of a heat conducting material, thus the heat of all LEDs 3 may be reliably dissipated and in particular emitted via the back face of the support element 2. The shown embodiment consists of a plane support element 2, wherein, however, it is easily possible that the support element 2 is bent in a zigzag manner and also consists of a heat conducting material. By disposing the support element 2 in a zigzag arrangement, it is possible to provide a higher number of LEDs 3 with the same outer dimensions to increase light intensity in this manner. By the zigzag folding of the support element 2, it is nevertheless sufficiently possible to emit the arising heat to the rear. The gel layer 4 may be additionally coloured to achieve a certain colour temperature, so that the emitted light of the LEDs 3, that is actually white, may be changed.

(13) FIG. 2 shows, in a plan view, several LED panels 1, as they are known from FIG. 1, in a form where they are lying one upon the other, which has been fanned out in the second partial figure. All individual LED panels 1 may also be used as luminaire 10 after having been fanned out. An LED panel 1 here consists of a support element 2 with individual LEDs 3 and a gel layer 4. The LED panels 1 here each have a lug 11, the lugs being interconnected by means of a gudgeon 12 so as to be movable in a pivoting manner. In the left Figure, altogether five LED panels 1 are arranged lying one upon the other, while in the right Figure, these are fanned out and thus result in a nearly star-shaped arrangement. Via corresponding fastening means, such a fanned-out luminaire 10 may be used, for example, as a garden luminaire etc. The gudgeon 12 is here simultaneously used as a fastener to a stand, a wall or comparable fastening options. Each individual LED panel 1 is connected with a non-depicted supply voltage via a connecting cable 5, wherein the individual connecting cables 5 may have one common connector.

(14) FIG. 3 shows, in a plan view, an alternative embodiment of an LED panel 15 that has, in contrast to FIG. 1, an approximately triangular shape, wherein the edge facing outwards has a bent design. Just as with the rectangular LED panels, the LED panel 15 consists of a support element 16 and individual LEDs 17 as well as a gel mass 18 in which the LEDs 17 are embedded. Via a screwed joint 19, the individual LED panels 15 are connected to each other so as to be movable in a pivoting manner, wherein the screwed joint 19 may not only be used for connecting the individual LED panels 15, but also for fastening them to a stand or the like. In this case, too, the individual LED panels 15 may be rotated like a fan. In a state where they are not in use, the LED panels 15 are lying one upon the other resulting in a small design, while a large illumination area is achieved when the individual LED panels 15 are fanned out. To ensure a uniform fanning out of the individual LED panels 15, these have a catch 21 and a pin 22 at their outer peripheries 25. The catch 21 is here angled downwards into the plane of the LED panel 15 located beneath, wherein the individual LED panels 15 are arranged offset with respect to each other downwards, and the catch 21 takes along the respective LED panel 15 located underneath via the pin 25, and thus a round luminaire is formed as it is depicted in FIG. 4.

(15) FIG. 4 shows, in two plan views and one enlarged view, the LED panels 15, namely several LED panels 15 disposed one upon the other where only one LED panel is fanned out in a left figure, the catch 21 taking along the pin 22 when the LED panel 15 is further swiveled and thereby circularly fanning out the complete arrangement consisting of several LED panels 15. In the left representation, the arrangement of the LED panels 15 can be seen after they have been fanned out, wherein one catch 21 each takes along the pin 22 of the LED panel 15 located underneath, so that a fanning out of all LED panels 15 is ensured. In a state of the LED panels 15 where these are shifted into each other, one also has a handy luminaire easy to transport which may be fanned out and also be shifted together by easy handling.

(16) From the enlarged view, the region of the pins 22 and the catches 21 is visible from the partially fanned out representation of the LED panels 15, and this clearly shows again how a catch 21 can grip the respective pin 22 located underneath to cause rotation. Each individual LED panel 15 has, at an outer periphery 25, a catch 21 and, distributed at the periphery, a pin 22 so that the respective upper LED panel 15 takes along the LED panel 15 underneath until the full circle is reached.

(17) FIG. 5 shows again, in a plan view and an enlarged representation, the representation of FIG. 4 in the form of a luminaire 20 consisting of the individual LED panels 15.

(18) FIG. 6 shows, by way of example, a luminaire 30 consisting of a fanned out LED luminaire 20 with a stand 31 in a side view. The stand 31 is connected by the vertical strut 32 directly with the screwed joint 19 of the LED panels 15 and furthermore has a tripod 33 for putting it up on a plane floorspace. The luminaire 30 with the stand 31 is to be considered only as an example because the fanned out LED panels 15 may be easily also employed in a suspended version or a wall version.

LIST OF REFERENCE NUMERALS

(19) 1 LED panel 2 support element 3 LED 4 gel layer 5 connecting cable 6 support element 10 luminaire 11 lug 12 gudgeon 15 LED panel 17 LED 18 gel mass 19 screwed joint 20 luminaire 21 catch 22 pin 25 periphery 30 luminaire 31 stand 32 strut 33 tripod 34 angular bow 35 fastening clips 36 gusset plate