WO2008071787A1

WO2008071787A1 - Component having at least one light source

Info

Publication number: WO2008071787A1
Application number: PCT/EP2007/063945
Authority: WO
Inventors: Martin Steinwender; Christian Bartenbach
Original assignee: Fritz Egger Gmbh & Co.
Priority date: 2006-12-15
Filing date: 2007-12-14
Publication date: 2008-06-19
Also published as: EP2102548B1; PT2102548T; PL2102548T3; EP2102548A1; EP1933086A1; HUE032276T2; EP1933086B1; ES2607360T3

Abstract

The invention relates to a component (1) having at least one light source (4), with the intention, for simplified fitting of the light source (4), being that the component (1) is formed from a wooden material and the light source (4) is arranged in the interior of the component (1).

Description

Component with at least one luminous agent

The present invention relates to a component with at least one light source.

In the prior art, there are a variety of components with integrated bulbs that can be subsequently used for example in a wall, a ceiling or a floor. In order to allow the inclusion of the component, which is for example a metal frame in the wall, the ceiling or the floor, a corresponding recess must be previously provided therein, which makes the installation of the bulb relatively expensive.

It is therefore an object of the present invention to provide a component with at least one light source, which ensures a simplified installation of the light source.

The previously derived and indicated object is achieved in a component having at least one luminous means in that the component has a wood material as the material and the luminous means is arranged in the interior of the component.

For the purposes of the present invention, wood-base materials are understood to mean all those materials which have the natural product wood as their base, but are comminuted and processed with the addition of further auxiliaries and connecting substances. These are therefore, inter alia, particle board, fiberboard, such as MDF or HDF plate, and OSB boards and from the aforementioned finished products, such as lightweight panels, composite honeycomb panels, panels with plastic or melamine resin coating. Solid wood, such as boards and planks, or veneers does not fall under the term wood material. The use of a wood-based material makes it possible that the component according to the invention does not have to be installed in an expensive manner in an existing wall, ceiling or floor, since it already forms at least part of the wall itself, said ceiling or floor.

Thus, it is conceivable that the component according to the invention forms a side wall or a shelf of a cabinet and in this way a light source does not have to be retrofitted in a complicated manner. In other words, the component according to the invention and the luminous means arranged in the interior form a prefabricated assembly unit which can be used as a wall, ceiling or floor element, for example of furniture or in house construction.

Preferred embodiments of the component according to the invention are the subject of the subclaims and will be described in more detail below.

A particular embodiment is the combination of particularly lightweight or acoustically equipped plate products, such as lightweight panels or acoustic panels, with bulbs.

As a lamp, in principle all possible according to the prior art can be used. However, such bulbs have proven to be advantageous, which have a low height and / or their light is well fokuεsierbar and / or have a low heat generation and / or a high light output exhibit. These properties are met, for example, LED bulbs to a high degree. Another advantage of LED technology lies in the fact that they can be influenced by appropriate controls in their color temperature. This makes it possible in a simple manner to influence the required lighting conditions as needed.

The components according to the invention can be used as wall, ceiling or floor elements. Also, the integration into furniture (shelves, integration in cabinet walls for

Interior lighting) or in structural elements is conceivable. It is particularly advantageous that the preferably bearing component can also take over the function of lighting.

A particular advantage of the component is the possibility of using wood-based materials as a component plate. Wood materials are generally thermally only slightly resistant, which complicates the installation of halogen lamps in furniture. In particular, multilayer boards, preferably three-layer boards, are also used as wood-based materials.

Particularly advantageous is the use of bulbs in combination with lightweight panels has been found. Lightweight panels are usually made of cover layers of conventional wood materials and a middle layer, which has a significantly lower density than the cover layers, such as cardboard honeycomb, foamed middle layers (eg polyurethane foam, styrene foam, biofoams, lightweight panels of lignocellulosic material). However, a lightweight plate can also consist of an integral plate, which has a significantly reduced density in the middle, which for Plate outside increases. A lightweight board has a density which is in particular less than 450 kg / m ^» , preferably less than 350 kg / m ³ .

Regardless of whether the component is a

Lightweight panel is or not, it is advantageous if, according to one embodiment, the density of the wood material of the component, in particular the cover layer increases toward the outside, thereby ensuring a high stability of the openings through which the light passes out of the component to the outside , This is particularly important in the case when the opening has no exclusively perpendicular to the component or cover layer plane extending inner surfaces, but the inner surfaces, for example, have a stepped and / or beveled course. In the case of a stepped and / or bevelled course, the wooden material has only a relatively small thickness in the region of the narrowest cross section of the opening, which is why it must be prevented at this point that there are cracks or breaks in the region of the edge of the opening. The density should thus be in the near-surface zones, for example, at least 750 kg / m *, in particular at least 780 kg / m ³ , preferably at least 800 kg / m ³ .

The openings described above can be both holes and slots. Thus, for example, fields with a plurality of symmetrically arranged openings are conceivable, in particular with a plurality of juxtaposed rows of openings. Also fields with several juxtaposed slots are conceivable. Combinations of slit-shaped and circular openings may also be provided. Optimal illumination results, for example, especially when using LEDs, with an arrangement of several points of light squared, that is For example, five rows each with five openings for a field with 25 LEDs. Of course, only individual rows of openings or LEDs are conceivable. Also, multiple fields of openings or LEDs, preferably in a symmetrical arrangement, be provided on the component.

As mentioned, the openings may have different cross sections and, in particular, be circular in the form of bores or slot-shaped. By suitable arrangement of the light-emitting element relative to the opening, it is also possible to achieve a symmetrical or asymmetrical light emission. In other words, the light-emitting element does not necessarily coaxial with the opening, but may also be arranged offset to it.

The Fαkussierbarkeit in conjunction with a small size unites the LED particularly advantageous. A bundling of the light beam is thus possible in such a way that it respectively exits through an opening with a diameter or cross section of less than one to a few millimeters (for example 0.05-10, in particular 1-8 mm, preferably 3-6 mm).

Characterized in that the lighting means according to an embodiment of the erfindungsgeraäßen component in comparison to the opening cross-section with respect to the outer surface of the

Component, in particular the top layer, is far back, this is barely visible from a viewer. This can prevent that the actual light source disturbs the viewer by direct light. A very homogeneous and seemingly diffuse lighting impression is thus achievable.

The opening diameter at the location of the narrowest cross section or on the outside of the component also influences the illumination impression. Is that for example arranged light-emitting element by design relatively close to the respective opening, so the opening cross-section is to be chosen as small as possible, so as not to disturb the viewer by direct light. Thus, the distance between the light emitting element and the opening also plays a role in the generation of a specific lighting impression.

According to a further embodiment of the component according to the invention it can be provided that the distance between the light-emitting element of the luminous means, in particular the LED, and the cover layer, which is provided with the light exit openings, more than 10%, in particular more than 20%, preferably more than 50%, the thickness of the component is. As stated previously, the cross-section of the openings can be made very small. For example, as a light-emitting element, an LED with a reflector and a lens be designed so that the light rays from the light-emitting element emerge so that they come together at a focal point again, before they then very diversified enter the room. If the light emitting element is arranged so that the focal point lies exactly in the region of the light exit opening in the component, it is sufficient to provide only a very small opening cross section. In this way, a simple dazzling freedom can be achieved with simple means.

There are various ways to bundle or direct the light beam. On the one hand, this may have a symmetrical forin, resulting in a uniform

Illumination of a surface is given perpendicular to the light beam. However, an asymmetrical bundling is also possible, which allows a deflection of the exiting light. As a result, when used as a ceiling light, for example, increased light intensities in the surfaces to be illuminated can be produced or the light emerging can be deflected towards the center of the room in the case of a ceiling light inserted at the edge or vice versa.

An LED illuminant requires electrical equipment to control the intensity and power of the LED. This can for example be installed centrally and supplies various components, which in itself several more

LED bulbs have. However, the integration of the electrical equipment has proven to be advantageous for the application and assembly. As a result, several components such as conventional "lights" can be wired and interconnected.

For the construction of ceiling systems, individual ceiling elements are preferably used, which can be introduced into prepared holders. Bulbs are either retrofitted or installed in individual ceiling elements. Such kind used

Illuminations are for the viewer but mostly disturbing, as he has a direct view to the bulbs to a large extent. Even with the use of reflectors, this disturbing property can only be solved insufficiently. Reflections and unequal illumination are the consequences. When using the components according to the invention with light sources in some of the ceiling elements, this disturbing effect can be prevented.

The acoustic equipment of rooms and furniture is very easily possible with wood-based panels. According to the prior art, the cover layers are perforated for this, which allows the penetration of sound into the plate interior. Sound-reflecting and sound-absorbing elements in the Plate interior leads to sound absorption and can not escape the incoming sound.

The perforation may have holes of one or more millimeters {eg 1-2 mm). But there are also conceivable products whose Lochdurcϊrmesser is less than 1 millimeter. The expert also calls such panels acoustic panels or panels.

A particular embodiment of the present invention represents the combination of sonic and lighting properties of a panel such that perforations of the acoustic panel are also used for penetrating light beams. For this purpose, certain bores of the acoustic panel are provided with light-emitting elements in a dependent of the required illumination intensity grid or light-emitting elements are arranged behind the openings. By choosing the appropriate light emitting element (e.g., LED), the required aperture radius can be made nearly identical to the diameter of the perforation. Thus, optical disadvantages can be avoided by disturbing unequal bore diameter.

Finally, it will be discussed further preferred embodiments with regard to the formation of the wood material.

As already indicated, the wood-based material is preferably designed such that it has a very high homogeneity and density in the area of the near-surface zones. This allows the formation of precise recesses. In order to achieve the required homogeneity, when using chipboard as a wood material in the near-surface zones at least 50%, in particular at least 75%, preferably at least 95% of the particles have a maximum diameter of 0.5 mm.

A further improved precision in the formation of the openings can be achieved according to a further embodiment, when the wood material is provided with a resin-containing coating. This has a much higher density than a Holswerkstof and can be machined very precisely with tools of high quality. Preferably come as a coating impregnates, which are pressed directly to the wood-based panel, or laminates, which are glued in a separate step with the wood material, as a coating in question. The coating may have a thickness of at least 0.05 mm, in particular at least 0.15 mm, preferably at least 0.25 mm. In particular, the known urea, melamine and phenolic resins and mixtures thereof are used.

In order to avoid disturbing reflections in the area of the passage of light, a blackening can be carried out here. To avoid a separate operation, it may be advantageous to use a mass-colored wood material. For this purpose, numerous possibilities are known in the art. For example, to the chips or fibers in addition to the binder and a dye, here to achieve a blackening and graphite, are added.

To permanently avoid problems that may arise for the component due to the heating occurring in each light source, it is preferred that the wood material has an increased heat resistance - even if this problem in the preferred LEDs occur to a negligible degree - measures to achieve such are well known in the art. For lightweight panels, for example, such can be achieved by employing temperature resistant center sheet materials, such as specialty cardboard honeycombs, and by selecting a temperature resistant adhesive for bonding between center and top sheets. Thus, such wood materials or lightweight panels are preferably used, which have a temperature resistance of at least 75 ° Cj, in particular at least 100 ⁰ C, preferably at least 115 ⁰ C.

Example 1:

Integration of an LED in a lightweight honeycomb panel.

In a lightweight board with a total thickness of 19 mm consisting of double-sided cover layers (chipboard with 4 mm thickness) and a cardboard honeycomb core are light emitting elements integrated several light emitting elements. The honeycomb panel is encased on all sides and is superficially designed and decorative on the edges. In addition, this has locking devices on the back, which allow installation as a ceiling light element integrated into a cassette ceiling consisting of individual elements.

The element has a square shape and has integrated 16 light emitting elements in four rows of four elements each. The lighting elements are preassembled on a support plate on which all electrical devices for operating the light source are located.

The pre-assembled carrier plate has devices for attachment in the honeycomb plate. The honeycomb plate is prepared with holes, which serve the exit of the light beam, and with milling sur receiving the carrier plate. Now, in a simple assembly step, the support plate can be inserted into the prepared honeycomb panel and used as a cassette ceiling sub-element, which also performs a lighting function.

Example 2:

Integration of an LED in an acoustic panel

An acoustic panel has perforations ah at least one outer side in a grid. Light-emitting elements as described in Example 1 are now integrated into the acoustic panel so that the light exit opening of the 16 light-emitting elements arranged in a grid coincide with perforations of the acoustic panel. Thus, the illuminant is integrated in the plate so that it can almost not be perceived.

There are now a variety of ways to design and further develop the device according to the invention. For this purpose, on the one hand reference is made to the claims subordinate to claim 1, on the other hand to the

Description of an embodiment with reference to the accompanying drawings. In the drawing shows:

Fig. Ia) to d) is a sectional view of embodiments of a component according to the present invention

Invention and Fig. 2 is a plan view of the component of FIGS.

Ia) to d).

Fig. 1 and Fig. 2 show a component 1, here a lightweight board 2, with a first cover layer Ia, a second cover layer Ib and a honeycomb-shaped, light middle layer Ic with integrated Leuchtrπittel 4. The illuminant 4 is connected via a support 7 with the cover layer I connected. The light-emitting means 4 has a plurality of LEDs 5 which radiate outwardly through associated circular openings 6 in the cover layer 1b. For reinforcement, the lightweight panel bar 3.

The exemplary embodiments according to FIGS. 1a) to d) differ in the design of the openings 6, in particular in the course of the inner surfaces 6a of the openings S. Thus, the inner surfaces Sa of the openings 6 in the embodiment according to FIG. Ia) straight and perpendicular to the plane of the lightweight board 2 and the lower cover layer Ib.

But it is also conceivable, as in the case of Fig. Ib) to provide a stepped course of the inner surfaces 6a. In this case, the upper part of the inner surface 6a is set back relative to the lower part. Such an embodiment of an opening 6 can be achieved, for example, by first introducing a

Blind hole of a relatively large diameter is provided on the side facing the LED 5 side of the lower cover layer Ib, in which subsequently a through hole of a smaller diameter is introduced. Particularly advantageously, however, the described opening 6 can also be produced with a correspondingly shaped stepped drill. A graduated course of the inner surfaces 6a has the advantage that, in particular in conjunction with a bundling of the emitted Light rays in a focal point relatively small opening cross-sections can be realized.

As small opening cross sections as possible can also be achieved by an oblique course of the inner surfaces 6a _/ as it is shown for example in the embodiment of Fig. Ic). With an oblique course is meant a course at an angle to the longitudinal plane of the lightweight panel 2 and the lower cover layer Ib. Such a course can be generated for example by a conical milling tool.

Fig. Id) shows a combination of a stepped and a tapered course of the inner surfaces 6a of the opening 6. In this case, the upper part of the inner surface 6a is set back relative to the lower part and is produced, for example, by first forming a blind bore of a relatively large diameter the lower cover layer Ib is provided. The lower part of the inner surface 6a then projects in a plane parallel to the longitudinal plane of the lightweight board 2 or cover layer Ib in the direction of the center of the opening 6, followed by a beveled portion, in which the inner surface 6a so angled to the longitudinal plane of the lightweight panel 2 and Cover layer Ib runs. The chamfered portion can be produced in the present case, for example, by a conical milling tool. This opening 6 can alternatively be produced with a correspondingly shaped step drill.

Finally, FIG. 2 shows a plan view of the component 1 in the form of a lightweight board 2 with a field of four rows of LEDs 5 and openings 6 arranged next to one another and offset from one another. It is of course also conceivable to arrange a plurality of such fields in one and the same component 1 ,

Claims

claims

1. component (1) with at least one light source (4), characterized in that the component (1) as a material comprises a wood material and the lighting means (4) is arranged in the interior of the component (1).

2. Component (1) according to claim 1, characterized in that the component (1) is plate-shaped.

3. Component (1) according to claim 1 or 2, characterized in that the component (1) has at least one chipboard, fiber and / or OSB board, in which the lighting means (4) is inserted.

4. component (1} according to any one of the preceding claims, characterized in that the component (l) is a lightweight board (2).

5. Component (1) according to one of the preceding claims, characterized in that the component (1) has a cover layer (Ib) made of a wood material in which one or more openings (6) are arranged.

6. component (1) according to claim 5, characterized in that the inner surfaces (6a) of the openings (6) are blackened.

7. component (1) according to claim 4 or 5, characterized in that the inner surfaces (6a) of the openings (6) have a stepped and / or bevelled course.

8. component {1} according to any one of claims 5 to 7, characterized in that the openings (6) are formed by holes and / or slots.

9. Component (1) according to one of the preceding claims, characterized in that the lighting means (4) has at least one light-emitting element, in particular at least one LED (5).

10. component (1) according to claim 9, characterized in that each Iichtaussendenden element, in particular each LED (5), one of the openings (6) is associated.

11. The component (1) according to claim 10, characterized in that the opening (6) is arranged coaxially to the light emitting element, in particular to the LED (5).

12. component (1) according to claim 10 or 11, characterized in that the diameter of the opening (6) 0.05-10, in particular 1-8 mm, preferably 3-6 mm.

13. Component (1) according to one of claims 9 to 12, characterized in that the distance between the light-emitting element, in particular the LED (5), and the cover layer (Ib) more than 10%, in particular more than 20%, preferably more than 50%, the thickness of the component (1) is.

14. Component (1) according to claim 13, characterized in that the light-emitting element, in particular the LED (5), the

Cover layer (Ib) touched.

15. Component (l) according to one of the preceding claims, characterized in that the component (1) is an acoustic panel.

16. Component (1) according to one of the preceding claims, characterized in that the density of the Holzwerkstoffε of

Component (1), in particular the cover layer (Ib), increases towards the outside.

17. Component (1) according to claim 16, characterized in that the density towards the outside increases to a value of at least 750 kg / m ³ , in particular at least 780 kg / m ³ , preferably at least 800 kg / m ³ .

18. Component (1) according to one of the preceding claims, characterized in that the wood material of the component (1}, in particular the cover layer (Ib), at least in the outer 30%, in particular 20%, preferably 10%, of its cross-section, based on the total thickness of the wood material, a proportion of particles of a maximum diameter of 0.5 mm of at least 50%, in particular at least 75%, preferably at least 95%, based on the total number of particles having.

19. Component (1) according to one of the preceding claims, characterized in that the wood material of the component (1), in particular the cover layer (Ib), is provided with a synthetic resin-containing coating.

20. Component (1) according to claim 19, characterized in that the coating of an impregnate, which is preferably pressed directly with the wood material, or is formed by a laminate, preferably in a separate Arbeitsεchritt is glued to the wood material.

21. Component (1) according to claim 19 or 20, characterized in that the coating has a thickness of at least 0.05 mm, in particular at least 0.15 mm, preferably at least 0.25 mm.

22. Component (1) according to one of the preceding claims, characterized in that the particles of the wood material of the

Component (1), in particular the cover layer (Ib), with a dye, in particular graphite, colored.

23. Component (1) according to one of the preceding claims, characterized in that the wood material of the component {1}, in particular the cover layer C Ib), and / or the lightweight board (2), in particular the middle layer (Ic), a temperature resistance of at least 75 ⁰ Cj, in particular at least 100 ⁰ C, preferably at least 115 ⁰ C, having.