EP2177823A1 - LED built-in module, illumination assembly and ceiling or wall construction with the LED built-in module - Google Patents

Abstract

The light emitting diode installation module (1) comprises a light emitting diode unit (2), and a cooling body (3) thermally coupled with the light emitting diode unit. The structurally combined arrangement is fastened on the light emitting diode unit and the cooling body by a retaining element mounted in an installation opening. Independent claims are included for the following: (1) a lighting arrangement, which comprises a light emitting diode installation module; and (2) a floor and wall construction, which is made of gypsum plasterboards and gypsum cardboard acoustic boards with standardized openings.

Description

The invention relates to an LED installation module according to the preamble of claim 1. Furthermore, the invention relates to a lighting arrangement with a plurality of distributed LED installation modules according to the invention as well as a ceiling or wall construction with such a lighting arrangement.

An LED installation module is understood to be an assembly in which at least one light-emitting diode (LED) is used as the light source.

Light emitting diode modules are available in many forms on the market and are used in lighting arrangements in a wide range of the realization of individual points of light for accent lighting on emergency lighting to general lighting.

Furthermore, lighting systems are known on the market which consist of a centrally arranged light generator and light-conducting glass fibers connected to it. These systems are used, for example, to realize points of light distributed over an area in order to give the impression of a starry sky.

The object of the invention is to improve LED built-in modules so that they can be easily installed, especially in walls or ceilings can be installed, and a lighting arrangement with such a LED built-in module as well as to provide a ceiling or wall construction therefor.

This object is achieved with the objects mentioned in the independent claims.

According to the invention, LED installation module consisting of an LED unit, a thermally coupled to the LED unit heat sink is provided to attach the structurally combined arrangement of LED unit and heat sink by means of a mountable in a mounting hole holding member thereto.

The basic point here is that the LED installation module is initially separate from the means provided for installation. This makes it possible, for example, the plate, which is to carry the lighting assembly to equip with the holding element and separated from this, the wiring of the LED mounting modules with each other and possibly make with a control gear. The thus pre-wired LED built-in modules can then be connected without much effort and without special expertise with the pre-assembled holding elements, in particular snapped into this.

Such a snap connection is preferably realized by means of a holding element, which consists of a spring formed from two spring legs and a crosspiece. Advantageously, for this purpose, the spring legs at their free end in each case a hook-like bend, wherein these two bends are adapted to engage snapping in assigned Freinehmungen the heat sink to the structurally combined arrangement of LED unit and heat sink to lock. In the transverse web, a recess is preferably provided to allow a light exit on the holding element over.

The provided according to claim 3 tongues that are inclined to dig into a mounting hole, also can fulfill another function. For example, ceiling constructions are often covered on the back with a textile fleece. The tongues can be used in the installation of the retaining element to such a textile fabric at the desired position, i. usually over a mounting hole, cut open.

Preferably, the holding element is locked in a plate by means of a press-fit ring, which engages through the central recess. Such a press-fit ring ensures that the tongues are pressed against the inner surfaces of the installation opening and also remain in this position. At the same time, the press-fit ring can serve as a channel for the light output.

As an LED unit, a printed circuit board equipped with one or more light-emitting diode chips is preferably used, wherein the light-emitting diode chips are arranged under a common optical system. This printed circuit board is preferably connected to the heat sink by means of a double-sided and thermally conductive adhesive tape.

To ensure easy installation, a solution should be provided for handling the electrical cables. According to the invention, therefore, the heat sink a Form receiving space through which electrical lines, which are connected to the LED unit, are guided.

In order to comply with the relevant regulations, the electrical cables must be protected by a strain relief from mechanical damage. Therefore, a strain relief for the electrical lines can be provided on the heat sink. For this purpose, for example, a T-shaped exemption is provided at least in a side wall of the heat sink, which can be used together with a cable tie for strain relief when the cable tie is wrapped around the electrical wires and the exemption. Two such exemptions are preferably provided in order to receive the connection from an operating device or an upstream LED installation module to the LED installation module and a forwarding to a next LED installation module.

The LED unit will usually be mounted on the outside of the heat sink. This means, however, that the electrical leads can not be led without special precautions in the interior of the heat sink, ie in the receiving space. Therefore, a slot open towards the receiving space can be provided on the receiving space of the heat sink over its entire height so that an insertion of the electrical lines is made possible.

The lighting arrangement according to the invention consists of a plurality of distributed light exit points, which are formed with the LED built-in modules according to the invention.

For this purpose, several, in particular five, LED installation modules are preferably connected to one another via electrical lines connected. In general, this is done by a series circuits, but also parallel connection or in particular a combination of both types of circuits is possible. In any case, the LED built-in modules can be connected in the context of this invention in the manner of an LED string of lights and electrically powered by a common operating device. An operating device is preferably accommodated on or in a revisable region of a ceiling or wall.

In a preferred embodiment, the cooling body seen from above has an approximately rectangular cross section with longitudinal sides and transverse sides. If a plurality of adjacent LED built-in modules are arranged offset from each other in such a way that a longitudinal side of a first heat sink is located next to a transverse side of a second heat sink, it is ensured that a minimum distance remains around each heat sink. Thus, each heat sink is surrounded by sufficient air and can reliably fulfill its cooling function.

The lighting arrangement according to the invention is preferably used in a ceiling or wall construction, the plates consist of plasterboard.

Acoustic panels, in particular made of plasterboard, are available on the market with standardized openings. These standardized openings can serve according to the invention as installation openings for the LED built-in modules. These openings are, for example, 10 mm in diameter and arranged regularly distributed over the acoustic panel at a distance of 20 mm from center to center.

Further advantageous developments of the invention are described in the subclaims and can be taken from the embodiments of the invention described below.

• Figur 1 eine erste perspektivische Ansicht einer erfindungsgemäßen LED-Einheit mit einem Kühlkörper,
• Figur 2 eine zweite perspektivische Ansicht einer erfindungsgemäßen LED-Einheit mit einem Kühlkörper gemäß Figur 1,
• Figur 3 eine perspektivische Ansicht eines Halteelementes für eine LED-Einheit mit einem Kühlkörper gemäß Figur 1,
• Figur 4 eine erste perspektivische Ansicht eines erfindungsgemäßen LED-Einbaumodules,
• Figur 5 eine zweite perspektivische Ansicht eines LED-Einbaumodules gemäß Figur 4,
• Figur 6 eine erste perspektivische Ansicht einer Beleuchtungsanordnung mit LED-Einbaumodulen gemäß Figur 4 bzw. 5 und einer Decken- oder Wandkonstruktion mit einer solchen Beleuchtungsanordnung.
• Figur 7 eine zweite perspektivische Ansicht einer Beleuchtungsanordnung sowie einer Decken- oder Wandkonstruktion gemäß Figur 6, mit Schnittdarstellungen einiger LED-Einbaumodule.

An embodiment of the invention will be explained in more detail with reference to the accompanying drawings. Show it:

• FIG. 1 a first perspective view of an LED unit according to the invention with a heat sink,
• FIG. 2 a second perspective view of an LED unit according to the invention with a heat sink according to FIG. 1 .
• FIG. 3 a perspective view of a holding element for an LED unit with a heat sink according to FIG. 1 .
• FIG. 4 a first perspective view of an LED mounting module according to the invention,
• FIG. 5 a second perspective view of a LED built-in module according to FIG. 4 .
• FIG. 6 a first perspective view of a lighting arrangement with LED built-in modules according to FIG. 4 and 5 and a ceiling or wall construction with such a lighting arrangement.
• FIG. 7 a second perspective view of a lighting arrangement and a ceiling or Wall construction according to FIG. 6 , with sectional views of some LED built-in modules.

In the Figures 1 and 2 are perspective views of an LED unit 2 according to the invention with a heat sink 3 shown. The LED unit 2 consists of a printed circuit board on which at least one, not shown, white or colored light emitting light emitting diode is arranged, which is covered by an optical system 16. The LED unit is brought into good thermally conductive connection with the heat sink 3, for example by means of a double-sided adhesive tape. The electrical supply lines are not shown.

The heat sink is in plan view of the LED unit 2 in approximately rectangular shape with longitudinal sides 17 and transverse sides 18. The heat sink 3 has a substantially parallelepiped shape. The LED unit 2 is attached to the outside thereof, more specifically to the outside of the bottom surface 19 of the cuboid. The circuit board of the LED unit 2 is also rectangular.

In both longitudinal sides 17 of the heat sink 3 Freinehmungen 13 are provided which serve to receive the holding element 5. On the bottom surface 19 opposite the end of the heat sink 3 in the region of the two longitudinal side 17 T-shaped exemptions are incorporated into the heat sink 3, which form a strain relief 15. By means of a (not shown) cable tie or the like, so that an electrical line, which is guided along the heat sink 3, are fixed to the T-shaped release on the heat sink 3.

In order to be able to lead electrical lines emanating from the LED unit 2 into the receiving space 14 of the heat sink 3, the transverse side 18 of the heat sink 3 is open over the entire height, i. it extends there a slot 20. To facilitate the guidance of the electrical lines, it is also provided that the transverse side 18 does not extend from the bottom surface 19 to the opposite end of the heat sink 3, but only a part of the transverse side, starting from said opposite end, covered. Thus, there is a further free space in which the electrical lines can be freely routed or guided by the LED unit 2.

FIG. 3 shows a perspective view of a holding element 5. The holding element 5 is a spring formed from two spring legs 6 and a transverse web 7, which has a central recess 8 in the transverse web 7. From this recess 8 are tongues 9, which are inclined so that they are suitable to dig into a mounting hole 4. In order to realize a snap connection between the LED unit 2 or heat sink 3 and the holding element 5, the spring legs 6 are each provided at their free ends with a hook-like bend 12. The two bends 12 are adapted to engage in the claws 13 in the heat sink 3. The structurally combined arrangement of LED unit 2 and heat sink 3 is thus locked in the retaining element 5 and thus in the mounting hole 4.

In the FIGS. 4 and 5 It is shown how the holding element 5 is connected to the LED unit 2 or the heat sink 3. In addition, the press-in ring 10 is shown in the installed state. The press-fit ring 10 is seated in the recess 8 of the holding element 5. With its outer wall presses the press-fit against the tongues 9 and thus ensures that the tongues 9 dig into the mounting hole 4. About the press-in ring 10, the LED unit 2 is arranged. The optic 16 projects at least partially into the tubular channel formed by the press-fit ring 10. Thus, the light generated by the light emitting diode (s) is radiated via this channel into the installation opening and thus into the room to be illuminated.

In the FIGS. 6 and 7 are perspective views of a lighting arrangement with LED built-in modules 1 according to the invention and a ceiling or wall construction shown with such a lighting arrangement.

The lighting arrangement is arranged on a plate 11, which has evenly distributed openings. Such a plate 11 can serve as an acoustic ceiling, for example. The plate 11 is mounted on tinplate profiles 21. These sheet metal profiles 21 form a previously known in the art ceiling substructure and are used to mount the entire ceiling construction on a raw ceiling.

Some of the openings are equipped with the LED built-in modules 1 according to the invention. The LED mounting modules 1 are aligned so that there is always a longitudinal side 17 of a first heat sink 3 next to a transverse side 18 of a second heat sink 3 and vice versa, unless it is the outermost LED built-in modules.

With regard to the routing is to be noted that due to the small distance of the LED modules 1 to each other and their staggered arrangement, the electrical lines are usually always passed through the receiving space 14 through to the respective LED unit 2. This is also a use of the strain relief 15 in an advantageous manner possible.

In order to securely hold the LED installation module 1 in the plate in position, this may have spacers 22 in addition to the holding element 5.

In addition, it should be noted that the length of the printed circuit board of the LED unit 2 is less than the length of the bottom surface 19. Because of the resulting bending radius is ensured that soldered to the circuit board in the rule and therefore partially bare wires of the electrical Leads do not come into contact with the heat sink 3, which is usually made of aluminum, and thus cause short circuits.

Finally, it should be noted that the use of the LED modules according to the invention is not limited to ceilings or walls, but is also suitable, for example, for floor applications.

LIST OF REFERENCE NUMBERS

1

LED assembly module

2

LED unit

3

heatsink

4

hole

5

holding member

6

spring leg

7

crosspiece

8th

recess

9

tongue

10

Einpressring

11

plate

12

bend

13

Freinehmung

14

accommodation space

15

Strain relief

16

optics

17

long side

18

transverse side

19

floor area

20

slot

21

Tinplate Profile

22

spacer

Claims (21)

LED installation module (1) consisting of an LED unit (2), a heat sink thermally coupled to the LED unit (3), characterized,
that the structurally associated array of LED unit (2) and heat sink (3) by means of in an installation opening (4) mounted holding element (5) is attached thereto. LED installation module according to claim 1
characterized,
in that the holding element (5) has one of two spring legs 6)
and a crosspiece (7) formed spring, and that in the transverse web (7) has a central recess (8) is present. LED built-in module according to claim 2
characterized,
that project from the recess tongues (9) which are inclined so that they are adapted to dig into a mounting hole (4). LED installation module according to claim 2 or 3,
characterized,
that the holding element (5) by means of a Einpressringes (10) formed by the central recess (8) engages through, in a plate (11) is locked. LED built-in module according to claim 2, 3 or 4,
characterized,
that the spring legs (6) each have a hook-like bend (12) at their free end, wherein the two bends (12) are adapted to snap into associated claws (13) in the heat sink (3) to engage the structurally combined arrangement of LED Unit (2) and heat sink (3) to lock. LED installation module according to one of claims 2 to 5,
characterized,
that on the LED unit (2) arranged light-emitting diode emits light by means of the central recess (8). LED installation module according to one of claims 2 to 6,
characterized,
in that the light-emitting diode or its optics (16) arranged on the LED unit (2) projects into the central recess (8). LED installation module according to one of the preceding claims,
characterized,
the LED unit (2) is connected to the heat sink (3) by means of a double-sided and thermally conductive adhesive tape. LED installation module according to one of the preceding claims,
characterized,
in that the heat sink (3) forms a receiving space (14) through which electrical leads which are connected to the LED unit (2) are guided. LED installation module according to claim 9,
characterized,
that the cooling body (3) forms the strain relief (15) for the electrical wires. LED installation module according to one of claims 9 or 10,
characterized,
that the strain relief (15) is formed of a T-shaped release and a cable tie, wherein the cable tie is looped around the electrical leads and the exemption. LED installation module according to one of claims 9 to 11,
characterized,
that the receiving space (14) of the heat sink (3) over its entire height to the receiving space (14) open toward slot (20) for introducing the electrical line. Lighting arrangement with a plurality of distributed light exit points,
characterized,
in that the light exit points are formed with LED built-in modules (1) according to one of the preceding claims. Lighting arrangement according to claim 13,
characterized,
that a plurality, in particular five, LED mounting modules (1) are connected to one another via electrical lines. Lighting arrangement according to claim 14,
characterized,
that the assembly modules (1) are connected in the manner of a LED light chain together and are electrically fed by a common operating device. Lighting arrangement according to claim 15,
characterized,
that the operating device is attached to a revisable area of a ceiling or wall. Lighting arrangement according to one of the preceding claims 13 to 16,
characterized,
that the cooling body (3) of the LED assembly modules (1) seen from above, have a rectangular cross section with longitudinal sides (17) and transverse sides (18) and are arranged that adjacent LED modules (1) displaced from one another such that a longitudinal side ( 17) of a first heat sink (3) next to a transverse side (18) of a second heat sink (3). Ceiling or wall construction with a lighting arrangement according to one of claims 13 to 17. Ceiling or wall construction according to claim 18,
characterized,
that the ceiling or wall construction of plasterboard, in particular plasterboard acoustic panels is made with standardized openings. Ceiling or wall construction according to claim 19,
characterized,
that the standardized openings as installation openings
(4) for the LED installation modules (1). Ceiling or wall construction according to one of the preceding claims 18 to 20,
characterized,
that the assembly modules (1) are arranged one behind the ceiling or wall construction in installation openings (4) and radiate their light through the installation openings (4) in the interior space to be illuminated.

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