DE202011000426U1 - Light channel with heat dissipation and light channel arrangement - Google Patents

Abstract

Light channel (01) for installation in a recess (02) of a wall or ceiling element with a U-shaped housing (03) and a plurality of juxtaposed and within the housing (03) arranged light-emitting diodes (LED) (04), wherein the plurality of LED (04) are arranged on a support base plate (20) made of good heat-conducting material and electrically interconnected via conductor tracks, characterized in that it has at least one heat-conducting element (07, 11), which after installation in the wall or ceiling element thermally conductive with this is connected and in thermal contact with the support base plate (20).

Description

The invention relates to a light channel for installation in a recess of a wall or ceiling element with a U-shaped housing and a plurality of juxtaposed and arranged within the housing light-emitting diodes (LED), wherein the plurality of LEDs are arranged on a support base plate of good heat conducting material and over Conductors are electrically interconnected. The invention further relates to a light channel arrangement in a wall or ceiling element.

Light channel systems have long been known and are used both in public institutions, such as the illumination of showrooms, shop windows and meeting rooms, as well as in the private sector for the lighting of living spaces. Light channel systems, in contrast to individual luminaires, enable individual lighting structures for special requirements.

From the DE 101 45 499 A1 is a light channel system with a U-shaped support profile and arranged within the support profile lamp modules known. The support profile has on its inside several, arranged at different depths engaging elements, which allows a latched mounting a lamp module in several different mounting depths. The support profile can be suspended by steel cables suspended on a ceiling or sunk into a ceiling. The side walls and the bottom side of the support profile have longitudinal openings, which allow air circulation within the support profile and out of it, whereby a dissipation of the heat generated by the lamps is to be realized. However, it is not described how a sufficient air circulation is to be achieved in the ceiling mounted support profile to carry away the heat generated in the light channel.

In light channel systems, different bulbs can be used. For modern applications, the use of LED (light-emitting diodes) has proved favorable. In the DE 20 2010 006 441 U1 is an LED module unit, comprising a carrier base plate made of electrically insulating material with a plurality of arranged on this, electrically interconnected via conductor tracks LED described.

The object of the invention is to provide an improved light channel suitable for installation in a wall or ceiling element, in which a dissipation of the heat generated by the light sources from the light channel is to be ensured even in continuous operation.

To achieve the object according to the invention, a light channel is used according to appended claim 1. The light channel according to the invention is characterized in that it is thermally conductively connected to the wall or ceiling element via at least one heat-conducting element. Furthermore, the object is achieved by a light channel arrangement according to claim 11.

A significant advantage of the light channel according to the invention is the fact that the heat generated during operation of the light channel heat is transmitted through the heat-conducting to the wall or ceiling element and can be dissipated using the larger areas reached above to the environment. As a result, overheating of the light channel and any associated malfunction can be effectively avoided.

In an advantageous embodiment, two L-profiles are used as heat-conducting elements, which are each connected to the open end of the housing. The L-profiles ensure the removal of heat generated in the light channel. In addition, the L-profiles also serve to cover existing installation gaps.

It has proven to be expedient if the recess for receiving the light channel is trapezoidal. Such recesses can be compared to U-shaped recesses relatively little effort in wall or ceiling elements bring. By using designed as L-profile heat-conducting elements inevitably resulting in the installation of the U-shaped housing of the light channel mounting gaps can be easily covered.

However, it is also possible to arrange the light channel within a U-shaped recess of a wall or ceiling element. In this context, it has proved to be particularly advantageous to use a designed as a U-profile heat conducting element. The U-profile is used in addition to its function as a heat conducting element as an aid for introducing the U-shaped recess. In addition, designed as an L-profile heat conducting elements are used, which also serve to cover any remaining mounting gaps. In comparison to the embodiments with a trapezoidal recess, however, only relatively small gaps are generally present here, which usually require no separate cover.

The light channel according to the invention can be installed in a drywall or a drywall ceiling. When installing in a drywall or drywall ceiling is preferably arranged as a U-profile heat-conducting element arranged in a recess of a planking of the drywall or drywall ceiling. The U-profile has in this embodiment on the planking facing side surfaces on several introduced at different depth shots. The planking is connected via a engaging in one of the receptacles mounting head of a profile strip with the U-profile.

However, the light channel according to the invention is just as well suited for installation in a concrete wall or concrete pavement.

According to a preferred embodiment, the housing of the light channel is made of aluminum. Aluminum enclosures are lightweight yet very robust, especially when compared to plastic enclosures. When installing the light channel in a concrete wall or concrete ceiling there is a risk that alkaline influences attack the aluminum and it can lead to corrosion. To prevent this, a direct contact of the aluminum housing with the concrete should be prevented. For this purpose, the housing can be provided with a corresponding protective coating. In addition, it has proven to be beneficial to incorporate aluminum together with zinc sheet, galvanized or stainless steel. In this context, the use of a heat-conducting element made of zinc, galvanized or stainless steel is particularly favorable. As a result, additional protective measures can be dispensed with in the embodiments in which a U-shaped heat-conducting element is arranged between the housing and the concrete floor or concrete wall, since there is no direct contact between the aluminum housing and the concrete.

Further advantages, details and developments of the invention will become apparent from the following description of preferred embodiments, with reference to the drawing.

Show it:

1 a cross section of a light channel according to the invention in a first embodiment;

2 : A cross section of the light channel according to the invention in a second embodiment.

1 shows a light channel according to the invention in a first embodiment. The light channel according to the invention 01 is in a recess 02 a concrete floor or concrete wall 06 installed in the middle. The recess 02 has a trapezoidal cross-section in the embodiment shown. The light channel 01 includes a U-shaped housing 03 , which preferably consists of extruded aluminum. In the case 03 is a multitude of light emitting diodes (LED) 04 arranged. The multiple LED 04 are on a support base plate 20 arranged and electrically interconnected via interconnects. The carrier base plate 20 consists of a good heat conducting material, such as aluminum, on which the LED 04 are glued on. In addition, the carrier base plate carries 20 preferably electrical conductors for supplying the LED. For a necessary electrical separation, for example, provides a thin insulation layer between the support base plate 20 and the printed ladders. Of crucial importance is the good heat transfer from the LED 04 over the carrier base plate 20 and from this to other construction units of the light channel, as described below.

Preferably, the LEDs 04 grouped together within which, for example, three or four LED are electrically connected in series, while the groups are electrically connected in parallel and are powered by a common switching power supply. This ensures, on the one hand, that if one individual LED fails, only one group consisting of a few LEDs will fail and the other groups will continue to function. On the other hand, it is possible, the carrier base plate 20 in short intervals to mechanically adapt to the specific application. For the support base plates have 20 preferably at a distance of a few centimeters predetermined breaking edges, whereby a tool-free cutting is permitted.

The with LED 04 equipped carrier base plates 20 are on a reflector profile 18 attached, which is preferably V-shaped but can also be shaped like a truncated pyramid or the like. As a fastening means, thermal adhesive tape or a thermally well conductive, heat-resistant adhesive has proven to be favorable. Thus, the V-profile acts 18 as a heat sink to dissipate the heat loss to the LED. The use of a V-profile 18 is low, as this is a bright reflector is formed and light losses can be minimized. The reflector profile 18 can be made of aluminum sheet, mirrored sheet steel or good heat conducting plastic. The V-profile 18 with the carrier base plate 20 is preferably detachable via a click connection in the housing 03 attached. Also in this connection is of particular importance that the heat is well forwarded to the housing.

In the case 03 There is also a power supply 15 to power the LED 04 , which is in the area between the housing bottom and the LED 04 is arranged. The power supply 15 is preferably a switching power supply with high efficiency.

The loss of heat generated in each case is over the wall of the housing 03 dissipated. The power supply 15 is suitably dimensioned so that numerous LEDs can be supplied. The mechanical attachment in the housing 03 can be done by pinching.

On the open side of the U-shaped housing 03 is a diffuser 05 preferably releasably attached via a click connection. The diffuser 05 can be U-shaped. diffuser 05 and support base plate 20 if necessary, for example, if defective LED 04 must be replaced or by choosing other LED 04 other lighting effects are to be achieved, are easily removed.

It is advantageous if different LEDs are combined, which emit in different spectral ranges and are separately controllable. In this way, for example, the resulting color temperature of the light emitted by the light channel can be adapted to the desired application.

The described construction of the light channel 01 has many advantages. So can the case 03 of the light channel 01 be mounted separately early in a construction project, without the more sensitive components, such as the LED 04 already in the light channel 01 are arranged. As a result, they can not be soiled or damaged in the usually at this time on a construction site incurred, associated with dirt work, such as wallpapering, painting and flooring installation work. The U-shaped housing 03 can also serve as a cable duct for the electrical installation. Once the basic installation is complete and no more dirty work is required, the V-profile 18 with the carrier base plates 20 and the LED 04 in the case 03 be attached. Optionally, an additional electronic circuit for dimming in the light channel 01 be arranged. After that, the diffuser 05 in the case 03 assembled.

The housing 03 also serves as a heat sink. That's the LED 04 bearing V-profile 18 is thermally conductive with the housing 03 connected. The complete light channel 01 can be cut to the desired length during the assembly process. There is only the restriction that the carrier base plate 20 only at certain intervals, which is due to the interconnection, can be shared. In one possible embodiment can be cut in 3 cm grid. If necessary, of course, other embodiments that allow an even smaller pitch, possible. As a rule, however, a 3 cm pitch is sufficient for the usual applications.

The light channel 01 is via heat-conducting elements with the concrete wall or concrete ceiling 06 thermally conductive connected. The heat-conducting elements are above the housing 03 and the V-profile 18 in Wärmeleitkontakt with the carrier base plate 20 So that the heat loss is efficient from the LED 04 is dissipated. At the in 1 embodiment shown, the heat-conducting elements as L-profiles 07 executed. In each case an L-profile 07 is with an open end of the case 03 connected. The L-profile 07 makes sure that in the case 03 during operation of the LED 04 Resulting heat in the concrete wall or concrete ceiling 06 is directed. This may cause overheating and possible damage to the light channel 01 effectively avoided. The L-profile 07 is preferably made of zinc sheet, galvanized or stainless steel. The choice of one of these materials for the L-profile 07 is advantageous because for the housing 03 preferably aluminum is used. As is well known, when aluminum is incorporated into concrete, alkaline influences aluminum to cause corrosion. To avoid this, the material destroying corrosion aluminum can be provided with an appropriate protective coating or be installed together with zinc, galvanized or stainless steel. Alternatively, the L-profile 07 also made of aluminum. In this case should also the L-profile 07 be provided with an appropriate protective coating.

The L-profile 07 not only serves as a heat-conducting body but also as a cover for existing installation gaps 08 , To installation columns 08 it inevitably comes through that in a trapezoidal recess 02 a U-shaped housing 03 is arranged. The use of a trapezoidal recess 02 has the advantage of having such a recess 02 lighter in a concrete wall or concrete pavement 06 bring in. The introduction of a dimensionally stable U-shaped recess is usually more expensive, since it is difficult to realize straight cutting edges over a length of several meters.

In the case of using trapezoidal recesses 02 It is expedient if the clear width at the bottom of the recess is slightly smaller than the width of the housing 03 is, so the case 03 when inserting strikes only at its longitudinal edges on the concrete. This automatically leads to the centering of the housing in the recess. The depth of the recess is to be adjusted accordingly, so that the light channel does not protrude or at most slightly beyond the surface of the wall or ceiling element.

In other embodiments, however, also U-shaped recesses 02 used. In these cases U-shaped profiles are used as heat-conducting elements, which at the same time also serve as aids for introducing the U-shaped recess 02 serve. In addition to the U-shaped heat-conducting elements can still L-profiles 07 be used as a heat conducting element or as a cover. In general, however, the U-shaped recess is realized so that only negligibly small mounting gaps arise during installation, which do not require additional coverage, because they can hardly be perceived by the users.

The light channel 01 closes flush with the concrete floor or concrete wall 06 and is therefore only in operation with switched on bulbs 04 strikingly visible. For this reason, it is particularly suitable in modern buildings, where emphasis is placed in particular on clean lines and sparingly applied accents.

2 shows a cross section of the light channel according to the invention 01 in a second embodiment. The light channel according to the invention 01 is here in a drywall or drywall 09 built-in. The light channel 01 is in a U-shaped recess 02 the drywall or drywall 09 arranged. The drywall ceiling or drywall 09 includes a frame construction (not shown) and a planking attached thereto 10 , As a planking 10 Insulation boards, such as plasterboard or gypsum fiber boards can be used. The planking 10 If required, of course, can also be designed fireproof. In the planking 10 is as a U-profile 11 arranged Wärmeleitelement arranged. Preferably, the U-profile meets 11 at the same time supporting properties for the dry construction, thus replacing the usual carrier profiles.

The light channel 01 is inside the U-profile 11 and is connected to this heat-conducting. The during the operation of the light channel 01 resulting heat is in the U-profile 11 and from there possibly in the planking 10 or adjacent frame construction of the drywall or drywall ceiling 09 directed. In the usual applications, however, the heat capacity of the U-profile is sufficient for dissipating the heat loss generated in the light channel. In this embodiment, as a rule, no additional covers in the form of L-profiles 07 to cover installation gaps required, since in drywall can be made more accurate than in concrete. The housing 03 of the light channel 01 is preferably made of aluminum. To contact corrosion between the existing aluminum housing 03 and the U-profile 11 to prevent is for the U-profile 11 to choose an appropriate material. The U-profile 11 is therefore preferably made of aluminum, zinc sheet, galvanized or stainless steel.

The planking 10 and the U-profile 11 are via moldings 12 connected with each other. This is a mounting head 13 the profile strips 12 with a recording 14 of the U-profile 11 in connection. As 2 it can be seen, are several shots 14 in the planking 10 facing surfaces of the U-profile 11 brought in. The moldings 12 can thus be installed at different depths, whereby the thickness of the planking 10 can be varied. The bottom of the U-profile 11 can be a C profile 16 having, which in one piece with the bottom of the U-profile 11 can be made. About the C-profile 16 stands the U-profile 11 with the frame construction of the drywall ceiling 09 in connection.

LIST OF REFERENCE NUMBERS

01

Lichtkanal

02

recess

03

casing

04

LED

05

diffuser

06

Concrete wall / concrete ceiling

07

L-profile

08

mounting gap

09

Drywall ceiling / drywall

10

planking

11

U-profile

12

moldings

13

fastening head

14

Recordings

15

power adapter

16

C-section

17

18

reflector profile

19

20

Support base

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10145499 A1 [0003]
• DE 202010006441 U1 [0004]

Claims (16)

Light channel ( 01 ) for installation in a recess ( 02 ) of a wall or ceiling element with a U-shaped housing ( 03 ) and a plurality of juxtaposed and within the housing ( 03 ) arranged light-emitting diodes (LED) ( 04 ), where the multiple LEDs ( 04 ) on a support base plate ( 20 ) are arranged of good heat conducting material and are electrically interconnected via conductor tracks, characterized in that it comprises at least one heat conducting element ( 07 . 11 ), which is connected after installation in the wall or ceiling element thermally conductive with this and in Wärmeleitkontakt with the support base plate ( 20 ) stands. Light channel ( 01 ) according to claim 1, characterized in that it has two as L-profile ( 07 ) has executed heat conducting elements, wherein in each case an L-profile ( 07 ) with an open end of the housing ( 03 ) connected is. Light channel ( 01 ) according to claim 1, characterized in that it has a U-profile ( 11 ) executed, in the recess ( 02 ) to be arranged heat conducting element, wherein the housing ( 02 ) is disposed within the heat conducting element. Light channel ( 01 ) according to claim 3, characterized in that the U-profile ( 11 ) forms at the same time a part of the wall or ceiling element. Light channel ( 01 ) according to one of claims 1 to 4, characterized in that the housing ( 03 ) consists of an extruded aluminum profile. Light channel ( 01 ) according to one of claims 1 to 5, characterized in that the heat-conducting element ( 07 . 11 ) consists of aluminum, zinc sheet, galvanized or stainless steel. Light channel ( 01 ) according to one of claims 1 to 7, characterized in that the on the support base plate ( 20 ) LED ( 04 ) are grouped into several groups, whereby in each group several LEDs ( 04 ) are electrically connected in series and the plurality of groups are electrically connected in parallel. Light channel ( 01 ) according to claim 7, characterized in that the carrier base plate ( 20 ) has a plurality of predetermined breaking points which extend between the groups. Light channel ( 01 ) according to one of claims 1 to 8, characterized in that the carrier base plate ( 20 ) consists of a highly thermally conductive material, in particular of aluminum and with good thermal contact on a reflector profile ( 18 ) is mounted, which in the housing ( 03 ) is arranged. Light channel ( 01 ) according to one of claims 1 to 9, characterized in that between the LED ( 04 ) facing away from the reflector profile ( 18 ) and the housing ( 03 ) a cavity remains in which at least one power supply ( 15 ) is arranged. Light channel arrangement comprising a wall or ceiling element with a recess ( 02 ) trapezoidal or U-shaped cross section and further comprising a light channel according to one of claims 1 to 10. Light channel arrangement according to claim 11, characterized in that the wall or ceiling element is part of a drywall or drywall ceiling ( 09 ). Light channel arrangement according to claim 12, characterized in that the U-profile ( 11 ) executed heat conduction in the recess ( 02 ) a planking ( 10 ) of drywall or drywall ( 09 ) is arranged. Light channel arrangement according to claim 13, characterized in that the U-profile ( 11 ) on the planking ( 10 ) facing side surfaces introduced several at different depth shots ( 14 ), wherein the planking ( 10 ) in one of the recordings ( 14 ) engaging fastening button ( 13 ) a profile bar ( 12 ) with the U-profile ( 11 ). Light channel arrangement according to claim 11, characterized in that the wall or ceiling element part of a concrete wall or concrete ceiling ( 06 ). Light channel arrangement according to claim 15, characterized in that in the recess ( 02 ) a permanent formwork is arranged, which is in thermal contact with the housing ( 03 ) of the light channel and / or with the heat-conducting element ( 07 . 11 ) stands.

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