DE102013007641A1 - lighting arrangement - Google Patents

Abstract

The invention relates to a lighting arrangement (1) having a body (10) with a plurality of light sources (13), the light exit direction of which points to at least one specific side (12) of the body (10), at least some of the light sources (13) from is coated with a translucent material (15). The lighting arrangement (1) is characterized in that a plurality of optically active bodies (16, 17, 18, 20) are introduced into the translucent material (15), which are used for at least partial reflection and / or scattering and / or refraction and / or absorption of the light emitted by the light sources (13) is formed.

Description

STATE OF THE ART

The invention relates to a lighting arrangement according to the preamble of claim 1 and to a method for producing such lighting arrangements according to claims 13, 14 and 15.

In lighting technology, different lighting means are used for different purposes and in different applications, both individually and in combination with lighting arrangements. For a long time LEDs (light-emitting diode, light-emitting diode) have been used as lighting means (light sources). LEDs have some advantages over conventional incandescent and fluorescent lamps, cf. z. B. DE 10 2009 047 556 A1 , For example, LED luminaires today can reach a lifespan of over 100,000 hours. This significantly reduces the time and cost of replacing a light source. Also, the power consumed can be reduced by using LEDs compared to incandescent bulbs. In addition to the room or street lighting LEDs are therefore increasingly in flashlights and effect lighting, z. For example, in illuminated furniture and designer pieces such as showcases or frames, where narrow and sometimes hidden LED strips provide for indirect lighting and a pleasant room atmosphere. Also, such LED strips are mounted in rooms directly on the walls, ceilings or corners to illuminate the surrounding surfaces and so produce a pleasant indirect lighting.

The LED lighting arrangements generally have a body as a background, on which individual LEDs are arranged as light sources. When an LED strip is used as the LED lighting device, the LEDs are usually provided in the longitudinal direction in series evenly spaced. The LEDs are connected to electronic circuits and / or components for their operation and electrical connections such as plugs and plug connections for electrical power supply to tracks. The substrate can be as a board both inflexible, d. H. rigid and not or hardly nondestructive flexible, or flexible, d. H. non-destructive, be formed. The LEDs, electronic circuits or components and interconnects are generally covered by a protective layer such. B. a transparent lacquer layer to protect them from the environment and also to avoid the conductivity to the environment, but without limiting the possibly existing flexibility of the LED lighting arrangement. Alternatively or additionally, the LED lighting arrangement may be arranged within a housing which has a light-permeable protective cover or the like on at least one side.

That's how it describes DE 10 2009 047 556 A1 an LED lighting arrangement in the form of inflexible LED boards, which can be connected to each other via plugs. This LED lighting assembly has a rigid light pipe that runs parallel to the LED board between the two end cap plugs and surrounds the LEDs from the environment. The light tube may be made of glass, plastic or any other type of suitable clear and translucent material.

The DE 20 2012 002 594 U1 describes room lighting profile arrangements in which inflexible LED boards or flexible LED strips can be provided to illuminate walls, ceilings or the floor to produce indirect lighting. For mounting on a flat surface or in a corner or on an edge profiles or other mounting aids are used in which the LEDs are arranged to illuminate the surrounding surfaces directly and so to act on the viewer indirectly. The profiles may have translucent covers that cover the LED board or LED strips from the environment.

The US 8,262,250 B1 describes a modular LED lighting system with flexible or rigid light strips. To facilitate the assembly and repair, the light strips are provided with connections for connection with each other, etc., which are formed as an integral part of the base body, ie the substrate strip. These light strips can be arranged in a rigid housing which has the connections on the two end faces and is covered by means of a transparent cover for protecting the substrate and the LEDs. The lid is made of transparent plastic, is colorless and can act as a lens to direct the light emitted by the LEDs.

A disadvantage of the use of lighting arrangements that dazzle the light sources when viewed directly and can be distracting. This is especially true for LEDs that represent punctiform and comparatively bright light sources. So u. a. For this reason, usually LED lighting arrangements used only for indirect lighting.

DISCLOSURE OF THE INVENTION

The object of the present invention is to provide a lighting arrangement in which a glare by the light sources at direct viewing is avoided or at least reduced and is easy and inexpensive to manufacture and use.

The object is achieved by a lighting arrangement having the features of the characterizing part of claim 1, a method having the features of claim 13, a method having the features of claim 14 and a method having the features of claim 15. Advantageous developments are described in the subclaims.

Thus, the present invention relates to a lighting arrangement comprising a body having a plurality of light sources, the light exit direction to at least a certain side of the body, wherein at least a part of the light sources is coated by a transparent material. The illumination arrangement is characterized in that in the translucent material, a plurality of optically active bodies are introduced, which are formed for at least partial reflection and or or scattering and or or refraction and / or absorption of the light emitted by the light sources.

Under a lighting arrangement is an array of light sources such. B. LEDs on a body to understand. The body may be any substrate which is suitable for receiving the light sources and the translucent material provided with optically active bodies, and may also be referred to as a base body or base body. Its dimensions can be rectangular, square, round, oval, etc. Also polygonal and curved dimensions are possible. In this case, the body is preferably formed in its thickness rather flat relative to its dimensions in the plane perpendicular thereto. However, it can also body with z. B. a round, semicircular, trapezoidal, triangular or square cross-section, which extend in this form in the longitudinal direction. The body is preferably not electrically conductive.

As a body preferably a circuit board is used, in addition to the o. G. Functions also recording z. As electrical circuits, components, cables and connections can serve. The body can be both inflexible, d. H. rigid and not or hardly nondestructive flexible, or flexible, d. H. non-destructive, be formed. As materials for an inflexible board paper, glass fiber or glass fiber fabric can be used as reinforcement with phenolic resin, epoxy resin, epoxy, di-, tetra-, multi- or BT-epoxy as well as polyimide as matrix. Also, inflexible boards made of Teflon or ceramic can be produced. Preferably, as an inflexible board, FR4 is used as the material, i. H. Glass fiber fabric with di- or tetra-epoxy. As the base material for flexible boards, films of polyimide, PET (polyethylene terephthalate) and PEN (polyethylene naphthalate) can be used. The body may also be luminescent, d. H. phosphorescent.

The light sources can be any light sources whose direct viewing can be improved according to the invention. The light sources are preferably LEDs, which are particularly bright and punctiform light sources and their direct viewing is therefore generally perceived as unpleasant. The light sources can emit all light of the same color or different colors. Preferably, all the light sources emit white light. The light sources are arranged at least on a certain side of the body to emit the light substantially away from this side. However, the light sources may also be arranged on several sides of the body, for. B. on two sides of a triangular cross-sectional profile of the body. In this case, the light sources completely or partially on the top, d. H. Surface of the specific side of the body, be arranged, or in the body, as long as they still have a light emission to the specific side. As light sources and light leaks from the body are considered, the z. B. be fed via glass fibers from a light source inside the body or outside the body. The light exit direction may in this case essentially point perpendicular to the surface of the specific side of the body or else at a different angle, in particular also at a shallow angle, so that the light exit points essentially parallel to the specific side of the body.

To protect the light sources are at least these, but preferably also the tracks, electronic circuits or components, etc., coated by a translucent material to cover them against the environment and at the same time to protect the environment from the electrical currents in the above electrical elements can flow. In this case, the light sources and the translucent material or the specific side of the body and the translucent material may also be spaced apart in the vertical direction, for. B. by another material. As a translucent material silicone (poly (organo) siloxane), polyurethane or epoxy resin can be used. Silicone is a comparatively cheap material, but it turns yellow comparatively fast and becomes brittle. Polyurethane is more expensive, but has a medium durability and better curing. Epoxy resin is comparatively expensive, but offers the comparatively highest durability and best transparency. Also, a translucent acrylic-based material is possible. The Translucent material can be applied as a layer by spraying, potting, welding, all-potting or similar methods on the body. The translucent material may also be formed luminescent, ie phosphorescent.

The present invention is based on the finding that the beam path of the light rays emitted by a light source can be influenced in such a way that the light rays do not or no longer dazzle a viewer. Therefore, optically effective bodies are introduced into the translucent material between the light sources of a lighting arrangement and the eye of a viewer, which can influence the direct beam path between the light source and the viewer's eye in such a way that this effect is achieved, i. H. the observer is less or no longer blinded by the light sources. This can be done by deflecting the beam path of the light emitted by the light source through the surface of an optically active body in one direction (reflection) or multiple directions (scattering) without the light entering or passing through the respective optically active body this passes. Also, the light emitted by the light source when passing through an optically active body can be changed in its beam path that it no longer directly reaches the eye of the viewer after exiting the optically active body (refraction and double or multiple refraction). Finally, the light emitted by the light source can also be absorbed by an optically active body so that its beam path ends in or on the optically active body (absorption). In all cases, glare from the light sources is avoided or at least reduced even when viewed directly.

In this case, any bodies which are capable of one or more effects of optical reflection, scattering, refraction and / or absorption can be used as optically active bodies. These optically active bodies can be fixed on the predetermined side of the body on which the light sources are arranged and project into the transparent material or via the light sources without contact with the body in the transparent material and in and / or on the surface of the light-transmissive Be included in the material. The translucent material can partially absorb or completely enclose the optically active bodies. Preferably, the translucent material has a height opposite the particular side of the body so that the light sources and optically active bodies are covered by a uniformly thick layer with respect to the particular side of the body. The optically active bodies may have various shapes, sizes, colors, surface textures, etc., wherein also different embodiments of optically active bodies can be used together in a lighting arrangement. The optically active bodies can be two- and / or three-dimensional bodies as well as particles which can bring about a coloring and / or clouding of the light-transmitting material. Preferably, the optically active bodies have a size such that they can be recognized by a viewer with the naked eye. Particularly preferably, the optically active bodies have a size, so that their design, in particular form and / or color, can be recognized by a viewer with the naked eye or can. All or some of the optically active bodies can also be luminescent, d. H. phosphorescent. To provide such optically effective body in the translucent layer and in and / or on the surface of the translucent material allows the integral formation of the lighting arrangement according to the invention, so that it can be easily and inexpensively manufactured and used.

The optically active bodies can be arranged in the beam path between the light source and the viewer so that they can bring about the effects described above. If multiple beam paths between a light source and viewer are possible because the light source can be perceived by the viewer from different angles, then sufficiently many optically effective bodies can be provided in the various potentially possible beam paths to effectively reduce or avoid glare from the viewer , This also applies to multiple light sources that can be perceived simultaneously or successively by the viewer.

Preferably, the optically active bodies are arranged such that they substantially cause reflection and / or scattering and / or refraction and / or absorption of the light emitted by the light sources, which is emitted substantially perpendicular to the particular side of the body.

It is advantageous here that illumination arrangements are generally used in such a way that they emit their light essentially perpendicular to their surface or the light sources are perceived perpendicular to the surface of the illumination arrangement by the viewer. Therefore, a reduction or avoidance of the observer's glare can be achieved particularly effectively by arranging the optically active bodies substantially in such a way in the light-transmissive material as well as in and / or on the surface of the light-transmissive material be that they affect in particular the optical paths of the light emitted in this direction light.

Preferably, the optically active bodies are arranged in the translucent material to the particular side of the body spaced.

These optically active bodies are thus arranged without contact to the surface of the specific side of the body in the light-transmitting material, d. H. "Floating". The optically active bodies may additionally or alternatively also be arranged in and / or on the surface of the light-transmitting material.

In order to be contained (completely) within the translucent material, optically active bodies can be used which can be easily and conveniently applied together with the translucent material during manufacture. The optically active bodies in this case must have approximately the specific weight of the light-transmitting material. Furthermore, the geometry and material of the optically active bodies must be matched to the translucent material and to the processing method, e.g. B. on the nozzle diameter during spraying or their solubility in z. B. resins. In this case, comparatively small particles are used, so that the translucent material in this nature and consistency due to the size of the particles contained in it can also be referred to as emulsion or dispersion. Alternatively or additionally, preferably larger optically effective body may be contained in the translucent layer, which can then be subsequently introduced in a further manufacturing step in the applied translucent layer and the outer surface, for. B. by pressing, rolling, rolling, etc. The translucent material may be referred to in this nature and consistency due to the size of the particles contained in it also as a suspension or batch.

The optically active bodies may be particles which serve for the color change and / or clouding (attenuation) of the light-transmissive material in order, overall, preferably uniformly, to reduce the light penetration of the light-transmitting layer by absorption and thereby reduce the glare of the observer. In this way, a diffuse light propagation is achieved. The translucent material is preferably colored white, so that the light loses only its glare effect or is reduced in this, but its brightness is reduced as little as possible. In this way, too, the color of the light emerging from the translucent layer can be selectively changed with respect to the light emitted from the light source, whereby both monochrome and also differently colored changes are possible. Here are in addition to the "common" color palette and coloring in z. As opal, gold, amber, multicolor, terracotta, satin or rose possible.

Alternatively or additionally, optically active bodies may be contained in the light-transmitting layer as well as its outer surface, which by means of reflection, refraction or scattering achieve a reduction or avoidance of glare of the observer. These optically active bodies are preferably made larger than the previously described particles. Optically effective bodies can be used here, which can be recognized as individual objects by the viewer, so that the optical effects caused by them, such as, for example, can also be detected. B. reflection by the viewer can be consciously perceived to give the lighting arrangement an additional decorative effect. In this case, the light-transmitting material is preferably to be designed such that the illumination function of the light sources is not reduced or as little as possible. Preferably, the translucent material is completely translucent, i. H. clear and colorless, formed and the optically active body incorporated herein and / or provided in and / or on the surface of the translucent material. The optically active body can be included in the production in the translucent material and applied to the body with him or even subsequently in the already applied but not yet (fully) cured translucent material z. B. by sprinkling or spreading, rolling or curling, impressions, etc. are inserted. For example, can be done by an impression of refractive crystalline structures as an optically active body in the surface of the completely transparent translucent material, an additional refraction of the beam paths, the z. B. the already performed refractions complemented by the other optically active body. Also, for this purpose, particles can be incorporated as optically active bodies in the surface of the light-transmissive layer, for. B. by rolling the applied but not yet completely cured translucent material in a granule.

It is advantageous here that the optically active bodies are in this way in the direct beam path between the light source and the viewer and the light source for the observer can completely or at least partially obscure. Also, the entire surface of the optically effective body is exploited to reduce the glare, whereby the beam path-changing effect of the optically active body is optimally utilized. Furthermore, beam paths can after their first change of other optically effective Bodies are changed again, which can further reduce the glare of the viewer.

Preferably, the optically active bodies are arranged fixed to the particular side of the body.

As fixedly mounted optically active bodies, such sizes, materials and geometries are used, which are less suitable, when manufactured, to be applied directly to the light-transmitting material, but require a separate production step for this purpose. Thus, such optically active bodies can be applied to the body before the application of the light-transmitting material. This can be done both materially and positively and / or non-positively by mechanical connections, for example by sticking, printing, embossing, labeling, laying, electrolytic coating or processing in multi-layer processes. Then, the optically active bodies can be coated with the translucent material or it is first applied to the translucent material and then introduced the optically active body in them to a contact on the predetermined side of the body. Preferably, the individual optically active bodies have a maximum width which corresponds to the maximum width of the predetermined side of the body. By this type of attachment comparatively large optically effective body can be used. All or some of the optically active bodies can also be luminescent, d. H. phosphorescent.

It is advantageous here that the optically active bodies have a secure hold on the predetermined side of the body. They also assume predefined positions during production, so that their effect on the beam path of the light sources can be determined not only by their design but also their positioning on the predetermined side of the body.

Preferably, the optically active bodies are formed two-dimensionally and / or three-dimensionally.

In this case, a two-dimensional optically active body is understood to mean one whose expansions extend essentially in two spatial directions, ie. H. z. As flat platelets of different geometry, in particular basic geometric shapes, such as triangular, rectangular, square, round, oval, polygonal, star-shaped, etc. A three-dimensional body has significant dimensions in all three spatial directions, which may have different dimensions. Again, different geometries such as cuboid, sphere, cone, pyramid, etc. are possible. Likewise, both the two-dimensional and the three-dimensional optically effective body creative freeforms in abstract, natural or artifact-like design as well as decorative motifs such. As hearts, stars, dots, flowers, animals, dinosaurs, cars, Piratenköpfe, garlands, single crystals, etc., which may also have a creative effect for the viewer in addition to the physical effect of the invention. All or some of the optically active bodies can also be luminescent, d. H. phosphorescent. In both cases, influencing the beam paths of the light emitted by the light sources can be effectively achieved by such optically active bodies.

Preferably, the lighting arrangement is a lighting strip.

By a strip is meant that the lighting assembly has a low height (thickness, thickness), i. H. is flat, and in the plane has an extension (length, longitudinal direction) which is significantly greater than the other spatial direction (width, transverse direction). Such a geometry can also be described as narrow. Such lighting strips are particularly suitable for use for lighting on elongated objects such. B. edges and corners of rooms, furniture and the like. In particular, such lighting arrangements are carried out by means of LEDs and referred to as LED strips. The lighting strips can be separated at predetermined locations, for. B. by cutting to adjust their length to the desired application.

Preferably, the body is flexible.

Flexibility in this context means that the body is flexible without breaking or being damaged. The body can both due to its dimensioning, d. H. Thickness or height and width, as well as his material to be designed so flexible that a flexible use of the lighting arrangement z. B. on curved surfaces or around corners and edges of z. B. rooms and furniture, etc. is possible. In other words, such a lighting arrangement, in particular a lighting strip, is designed such that it can be applied continuously around curves and over corners. Also, the lighting arrangement may preferably be applied bent in the transverse direction at the same time, ie. H. in serpentine lines, curves etc. For this purpose, preferably thin and narrow bodies are used.

Preferably, the lighting arrangement is a lighting module, which is designed to be connected by means of plug-in connections with further lighting modules.

Such modules are designed to operate in a jointly operated lighting arrangement with z. B. to be joined together a single electrical energy source. For this purpose, connectors are provided on the individual modules, which not only make the modules mechanically interconnectable but also electrically conductive connectable, so that z. B. several lighting modules can be connected in series and operated in series. This increases the flexibility of the use of the lighting arrangement, since finished modules can be easily and safely combined for concrete applications by plugging together.

Preferably, part of the light sources, preferably all light sources, are LEDs.

It is advantageous that LEDs have a long life and a comparatively low consumption of electrical energy. They can also be easily and inexpensively manufactured and applied to bodies such. B. boards are applied. As lighting arrangements, they can preferably be used as LED strips, which are usually sold as rolls and z. As walls, ceilings, floors of rooms are applied as lighting elements. Also, they can be used on or in pieces of furniture, etc. for this purpose. The individual LEDs are via printed conductors and, if necessary, electronic components such. B. resistors connected together.

The body preferably has a self-adhesive coating on a side facing away from the specific side of the body, preferably on the side opposite the specific side of the body.

This facilitates the attachment of the lighting arrangement.

Preferably, the plurality of light sources comprise at least one light source emitting light of a first color and at least one light source emitting light of a second color.

In this way, at least two light colors can be generated with a single illumination arrangement. The two light sources can be operated simultaneously or alternatively. In the latter case, a corresponding interconnection and conductor track guidance is required, which allows the electrical supply of two separate and alternately operable LEDs on the same body.

Preferably, the surface of the light-transmissive material is formed for at least partial reflection and / or scattering and / or refraction and / or absorption of the light emitted by the light sources.

Advantageously, the optical effects of the optically active bodies can be enhanced by a corresponding configuration of the surface of the light-transmitting material with respect to the same optical effects and / or supplemented by other optical effects. For example, an additional design element can be introduced into the illumination arrangement by a dichroic-metallic vapor deposition of the upper side of the light-transmitting material. Also, by machining the surface of the translucent material, there may be formed facets or prisms which scatter, reflect and / or break the light from within the translucent material.

• • Herstellen eines Körpers mit einer Mehrzahl von Lichtquellen, deren Lichtaustrittsrichtung zu mindestens einer bestimmten Seite des Körpers zeigt,
• • Einmischen einer Mehrzahl von optisch wirksamen Körpern in ein lichtdurchlässiges Material, und
• • Aufbringen des lichtdurchlässigen Materials auf der bestimmten Seite des Körpers, so dass wenigstens ein Teil der Lichtquellen von dem lichtdurchlässigen Material überzogen ist und die optisch wirksamen Körper das von diesen Lichtquellen emittierte Licht reflektieren und bzw. oder streuen und bzw. oder brechen und bzw. oder absorbieren können.

According to a further aspect of the present invention, this also relates to a method for producing a lighting arrangement as described above with at least the steps:

• Producing a body with a plurality of light sources whose light exit direction points to at least one specific side of the body,
• Mixing a plurality of optically active bodies into a translucent material, and
• Applying the translucent material on the specific side of the body, so that at least a part of the light sources is coated by the translucent material and the optically active body reflect the light emitted by these light sources and / or scatter and / or break and / or or absorb.

This type of production of an embodiment of a lighting arrangement according to the invention is advantageous because the degree of glare avoidance within the light-transmissive material is due to the admixing of the optically active bodies in the light-transmitting material, ie. H. by the amount of the optically active bodies admixed. Furthermore, the choice of the type of optically active bodies can have an influence on the properties of the finished product. Also, various embodiments of optically active bodies may be mixed together with the light-transmissive material. In this way, the previous production of such lighting arrangements can be maintained and supplemented only by the admixture of optically active body.

• • Herstellen eines Körpers mit einer Mehrzahl von Lichtquellen, deren Lichtaustrittsrichtung zu mindestens einer bestimmten Seite des Körpers zeigt,
• • Aufbringen einer Mehrzahl von optisch wirksamen Körpern auf der bestimmten Seite des Körpers, so dass die optisch wirksamen Körper das von diesen Lichtquellen emittierte Licht reflektieren und bzw. oder streuen und bzw. oder brechen und bzw. oder absorbieren können, und
• • Aufbringen eines lichtdurchlässigen Materials auf der bestimmten Seite des Körpers, so dass wenigstens ein Teil der Lichtquellen von dem lichtdurchlässigen Material überzogen ist.

According to a further aspect of the present invention, this also relates to a method for producing a lighting arrangement as described above with at least the steps:

• Producing a body with a plurality of light sources whose light exit direction points to at least one specific side of the body,
• Applying a plurality of optically active bodies on the specific side of the body so that the optically active bodies can reflect and / or scatter and / or break and / or absorb the light emitted by these light sources, and
• Applying a translucent material on the particular side of the body such that at least a portion of the light sources are covered by the translucent material.

It is advantageous here that the previous production of such lighting arrangement only the step of applying the optically active body must be interposed, the manufacturing process otherwise remains unchanged. This simplifies the implementation of this process and reduces the cost of manufacturing. The application can z. Example by gluing, printing, embossing, labeling, laying, electrolytic coating or processing in multi-layer process done.

• • Herstellen eines Körpers mit einer Mehrzahl von Lichtquellen, deren Lichtaustrittsrichtung zu mindestens einer bestimmten Seite des Körpers zeigt,
• • Aufbringen eines lichtdurchlässigen Materials auf der bestimmten Seite des Körpers, so dass wenigstens ein Teil der Lichtquellen von dem lichtdurchlässigen Material überzogen ist,
• • Aufbringen und bzw. oder Einbringen einer Mehrzahl von optisch wirksamen Körpern auf und bzw. oder in die Oberfläche des lichtdurchlässigen Materials, so dass die optisch wirksamen Körper das von diesen Lichtquellen emittierte Licht reflektieren und bzw. oder streuen und bzw. oder brechen und bzw. oder absorbieren können, und bzw. oder
• • Ausbilden der Oberfläche des lichtdurchlässigen Materials zur zumindest teilweisen Reflexion und bzw. oder Streuung und bzw. oder Brechung und bzw. oder Absorption des von den Lichtquellen emittierten Lichts.

According to a further aspect of the present invention, this also relates to a method for producing a lighting arrangement as described above with at least the steps:

• Producing a body with a plurality of light sources whose light exit direction points to at least one specific side of the body,
• Applying a translucent material on the specific side of the body such that at least a portion of the light sources are coated with the translucent material,
• Applying and / or introducing a plurality of optically active bodies onto and / or into the surface of the translucent material so that the optically active bodies reflect and / or scatter the light emitted by these light sources and / or break and / or or absorb, and / or
• Forming the surface of the translucent material for at least partial reflection and / or scattering and / or refraction and / or absorption of the light emitted by the light sources.

It is also advantageous here that the previous production of such lighting arrangement remains largely unchanged. This simplifies the implementation of this process and reduces the cost of manufacturing. Thus, the lighting arrangement can be coated as usual with a translucent material. Subsequently, either optically active body z. B. by sprinkling, pressing, curling, etc. are introduced into or on the surface of the translucent material. Alternatively or additionally, the surface can also be edited, for. B. by grinding, cutting, etc., to introduce here desired structures. Also, the surface of the translucent material can be pressed in the not completely cured state against a counter-mold to get their structure as a negative on itself. By such types of processing and their combination z. B. facets or prisms are introduced into the surface of the translucent material. Also, a processing of the surface of the translucent material may be followed by application and / or introduction of optically active bodies.

BRIEF DESCRIPTION OF THE DRAWINGS

Some embodiments and further advantages of the invention are explained below in connection with the following figures. It shows:

1a a perspective schematic representation of a lighting arrangement according to a first embodiment;

1b a cross section through the lighting arrangement of 1a ;

2a a perspective schematic representation of a lighting arrangement according to a second embodiment;

2 B a cross section through the lighting arrangement of 2a ;

3a a perspective schematic representation of a lighting arrangement according to a third embodiment;

3b a cross section through the lighting arrangement of 3a ;

4a a perspective schematic representation of a lighting arrangement according to a fourth embodiment;

4b a cross section through the lighting arrangement of 4a ;

5a a perspective schematic representation of a lighting arrangement according to a fifth embodiment;

5b a cross section through the lighting arrangement of 5a ;

6a a perspective schematic representation of a lighting arrangement according to a sixth embodiment;

6b a cross section through the lighting arrangement of 6a ;

7a a perspective schematic representation of a lighting arrangement according to a seventh embodiment;

7b a cross section through the lighting arrangement of 7a ;

8a a perspective schematic representation of a lighting arrangement according to an eighth embodiment; and

8b a cross section through the lighting arrangement of 8a ,

EMBODIMENTS OF THE INVENTION

1a shows a perspective schematic representation of a lighting arrangement 1 according to a first embodiment. 1b shows a cross section through the lighting arrangement 1 of the 1a , The lighting arrangement 1 has a body 10 which extends substantially in a longitudinal direction X (length) and in the transverse direction Y (width) and the height Z has comparatively small dimensions, so that the illumination arrangement 1 also as a lighting strip 1 can be designated. The body 10 is as a board 10 formed and has at its two ends in the longitudinal direction X each have a plug 11 or plug connection 11 on to order with further lighting arrangements 1 as well as electrical energy sources or other electronic elements can be connected. On the top 12 the board 10 is a plurality of LEDs 13 as light sources 13 arranged so that the lighting strip 1 also as a LED strip 1 can be designated. The LEDs 13 and the plug 11 or plug connection 11 are electrically conductively connected to each other via electrical lines (not shown). The LEDs 13 are with a translucent material 15 coated so that the LED strip 1 in the height Z has a total extent at which the thickness of the translucent material 15 the thickness of the board 10 exceeds, in particular at least twice. On its underside 14 shows the board 10 a self-adhesive coating for mounting the LED strip.

According to the invention, the LED strip 1 According to a first embodiment, a plurality of optically active bodies 16 on, leading to a haze or coloring of the translucent material 15 to lead. These are the optically effective body 16 as a particle 16 made so small that they together with the translucent material 15 form a kind of emulsion or dispersion. The size of the particles 16 in the 1a . 1b is used only for the graphic representation and does not correspond to the real size of the particles 16 , The particles 16 For example, they are white like LEDs 13 emitted light, so only that of the LEDs 13 emitted light through the particles 16 clouded by absorption, thereby reducing or even obscuring the observer, but the brightness of the LEDs 13 is minimally reduced.

2a shows a perspective schematic representation of a lighting arrangement 1 according to a second embodiment. 2 B shows a cross section through the lighting arrangement 1 of the 2a , Here are the optically effective bodies 17 bigger than the particles 16 of the first embodiment and by the viewer with the naked eye also in terms of their shape and or or color to recognize. Further, the optically effective bodies 17 designed such that they reflections, scatters and or or refractions can occur. For example, the optically active body 17 as diamond-shaped platelets 17 ie flat two-dimensional body 17 , be formed of metallic material to reflect the surface of the surfaces of the LEDs by reflections on their surfaces 13 Diverse light to divert emitted light and so reduce glare of the beholder or even avoid.

3a shows a perspective schematic representation of a lighting arrangement 1 according to a third embodiment. 3b shows a cross section through the lighting arrangement 1 of the 3a , In this case, the optically effective bodies 18 as a versatile body 18 on the surface 12 the board 10 attached provided. They also lead by reflections on their surfaces to reduce or even avoid dazzling the viewer.

4a shows a perspective schematic representation of a lighting arrangement 1 according to a fourth embodiment. 4b shows a cross section through the lighting arrangement 1 of the 4a , Here are the optically effective bodies 18 on the surface 12 the board 10 attached by imprint. As a result, they are comparatively flat but preferably still opposite the surface 12 the board 10 increased educated. The shape and arrangement of the optically effective body 18 can preferably be used to form patterns or lettering become. Nevertheless, the optically effective bodies 18 also in this embodiment for effecting the optical effects described above in a position. At the same time, the imprinting represents a simple and cost-effective production method, which leaves a great deal of leeway in the design of the imprint and thus the additional decorative effect of the optically effective body 18 offers.

5a . 6a . 7a and 8a each show a perspective schematic representation of a lighting arrangement 1 according to a fifth, sixth, seventh or eighth embodiment. 5b . 6b . 7b respectively. 8b each show a cross section through the lighting arrangement 1 of the 5a . 6a . 7a respectively. 8a , In these cases, the surface is 19 of the translucent material 15 by their own design and / or the addition of optically effective bodies 20 each designed so that here the same optical effects as in the various optically active bodies 16 . 17 . 18 may occur.

This is done in the fifth embodiment ( 5a . 5b ) achieved in that the optically active body 20 in the surface 19 of the translucent material 15 are inserted, for. B. by sprinkling, embossing or impressing them in the translucent material 15 , Especially in the not yet fully cured translucent material 15 , The optically effective body 20 extend completely into the translucent material 15 into and preferably close to the outside with the surface 19 of the translucent material 15 flush off. In the sixth embodiment ( 6a . 6b ) protrude the optically effective body 20 completely made of translucent material 15 out and preferably close inwards with the surface 19 of the translucent material 15 flush off.

In the seventh embodiment ( 7a . 7b ) is the surface 19 of the translucent material 15 both in the longitudinal direction X and in the transverse direction Y are crossed by a zig-zag pattern, so that facets or prisms in the surface 19 form. In the seventh embodiment ( 8a . 8b ), a zig-zag pattern runs only in the transverse direction Y (longitudinal prism), so that in each case refractions result in these spatial directions.

The designs of the surface 19 of the fifth to eighth embodiments may be applied both alone and in combination with each other and / or with one of the previous embodiments. So show the 7a . 7b . 8a and 8b an example of an embodiment of the surface 19 of the translucent material 15 in combination with the imprint of optically active bodies 18 of the fourth embodiment (see. 4a . 4b ).

LIST OF REFERENCE NUMBERS

X

Longitudinal direction, length

Y

Transverse direction, width

Z

Height, thickness, strength

1

Lighting arrangement, lighting strip, LED arrangement, LED strip

10

(flexible) body, carrier, substrate, circuit board

11

Plug or plug connection

12

Top or surface or front of the body 10

13

Light sources, LED light sources, LEDs

14

Bottom or back of the body 10

15

translucent material, cover, protective layer

16

floating optically active bodies for absorption in translucent material 15

17

floating optically effective bodies for reflection, scattering, refraction in translucent material 15

18

on top 12 attached optically effective bodies for reflection, scattering, refraction in translucent material 15

19

Top or surface of the translucent material 15

20

Optically effective body for reflection, scattering, refraction in or on the surface 19 of the translucent material 15

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 102009047556 A1 [0002, 0004]
• DE 202012002594 U1 [0005]
• US 8262250 B1 [0006]

Claims (15)

Lighting arrangement ( 1 ) with a body ( 10 ) with a plurality of light sources ( 13 ), whose light exit direction to at least one specific side ( 12 ) of the body ( 10 ), wherein at least a part of the light sources ( 13 ) of a translucent material ( 15 ), characterized in that in the light-transmitting material ( 15 ) a plurality of optically active bodies ( 16 . 17 . 18 . 20 ) are introduced for at least partial reflection and / or scattering and / or refraction and / or absorption of the light sources ( 13 ) emitted light are formed. Lighting arrangement ( 1 ) according to claim 1, wherein the optically active bodies ( 16 . 17 . 18 ) are arranged such that they essentially reflect and / or scatter and / or refract and / or absorb the light sources ( 13 ) emitted light which is substantially perpendicular to the particular side ( 12 ) of the body ( 10 ) is emitted. Lighting arrangement ( 1 ) according to claim 1 or 2, wherein the optically active bodies ( 16 . 17 . 20 ) in the translucent material ( 15 ) to the specific page ( 12 ) of the body ( 10 ) are arranged at a distance. Lighting arrangement ( 1 ) according to claim 1 or 2, wherein the optically active bodies ( 18 ) on the specific page ( 12 ) of the body ( 10 ) are arranged fixed. Lighting arrangement ( 1 ) according to one of the preceding claims, wherein the optically active bodies ( 16 . 17 . 18 . 20 ) are formed two-dimensionally and / or three-dimensionally. Lighting arrangement ( 1 ) according to one of the preceding claims, wherein the illumination arrangement ( 1 ) a lighting strip ( 1 ). Lighting arrangement ( 1 ) according to one of the preceding claims, wherein the body ( 10 ) is flexible. Lighting arrangement ( 1 ) according to one of the preceding claims, wherein the illumination arrangement ( 1 ) a lighting module ( 1 ), which is formed by means of plug connections ( 11 ) with further lighting modules ( 1 ) to be connected. Lighting arrangement ( 1 ) according to one of the preceding claims, wherein a part of the light sources ( 13 ), preferably all light sources ( 13 ), LEDs ( 13 ) are. Lighting arrangement ( 1 ) according to one of the preceding claims, wherein the body ( 10 ) on one of the specific pages ( 12 ) of the body ( 10 ) facing away ( 14 ), preferably on the particular page ( 12 ) of the body ( 10 ) opposite side ( 14 ), has a self-adhesive coating. Lighting arrangement ( 1 ) according to one of the preceding claims, wherein the plurality of light sources ( 13 ) at least one light source ( 13 ), which emits light of a first color, and at least one light source ( 13 ) emitting light of a second color. Lighting arrangement ( 1 ) according to one of the preceding claims, wherein the surface ( 19 ) of the translucent material ( 15 ) for the at least partial reflection and / or scattering and / or refraction and / or absorption of the light sources ( 13 ) emitted light is formed. Method for producing a lighting arrangement ( 1 ) according to one of claims 1 to 3 and 5 to 12, comprising at least the steps of: producing a body ( 10 ) with a plurality of light sources ( 13 ), whose light exit direction to at least one specific side ( 12 ) of the body ( 10 ), mixing a plurality of optically active bodies ( 16 . 17 ) in a translucent material ( 15 ), and applying the translucent material ( 15 ) on the specific page ( 12 ) of the body ( 10 ), so that at least a part of the light sources ( 13 ) of the translucent material ( 15 ) and the optically active bodies ( 16 . 17 ) that of these light sources ( 13 ) can reflect and / or scatter and / or break and / or absorb emitted light. Method for producing a lighting arrangement ( 1 ) according to one of claims 1, 2 and 4 to 12, comprising at least the steps of: producing a body ( 10 ) with a plurality of light sources ( 13 ), whose light exit direction to at least one specific side ( 12 ) of the body ( 10 ), applying a plurality of optically active bodies ( 18 ) on the specific page ( 12 ) of the body ( 10 ), so that the optically effective body ( 18 ) that of these light sources ( 13 ) reflect and / or scatter and / or break and / or absorb, and apply a translucent material ( 15 ) on the specific page ( 12 ) of the body ( 10 ), so that at least a part of the light sources ( 13 ) of the translucent material ( 15 ) is coated. Method for producing a lighting arrangement ( 1 ) according to one of claims 1 to 3 and 5 to 12, comprising at least the steps of: producing a body ( 10 ) with a plurality of light sources ( 13 ), whose light exit direction to at least one specific side ( 12 ) of the body ( 10 ) shows application of a translucent material ( 15 ) on the specific page ( 12 ) of the body ( 10 ), so that at least a part of the light sources ( 13 ) of the translucent material ( 15 ) and applying and / or introducing a plurality of optically active bodies ( 20 ) on and / or in the surface ( 19 ) of the translucent material ( 15 ), so that the optically effective body ( 20 ) that of these light sources ( 13 ) reflect and / or scatter and / or break and / or absorb, and / or form the surface ( 19 ) of the translucent material ( 15 ) for the at least partial reflection and / or scattering and / or refraction and / or absorption of the light sources ( 13 ) emitted light.

Images