One-piece grid structure for a luminaire, and luminaire

Abstract

The invention relates to a one-piece grid structure (1) for a luminaire (6), the shape of which corresponds to a number of continuous rods (2). Each rod (2) is deformed transversely to the longitudinal direction of the respective rod (2). Each rod (2) is positioned relative to the adjacent rods (2) in such a way that the rods (2) overlap with one another in overlapping regions (3), bear against one another, and are connected to one another. The rods (2) are wave-shaped, and the overlapping regions (3) are formed by the wave crests (4) and wave troughs (5) of the adjacent rods (2). The one-piece grid structure (1) is produced as a single piece using a 3D printing method.

Description

[0001] 1 BEA 4354 P LU

[0002] One-piece grid structure for a light fixture and lamp

[0003] The invention relates to a one-piece grid structure for a lamp as well as a lamp.

[0004] In the prior art, wire mesh structures are known, primarily used in lampshades, housings for technical components, or as decorative structural elements. These conventional wire mesh structures typically consist of metallic wires bent into standardized geometric shapes and connected by spot welds or mechanical joints. An example of this is wire lampshades, which are made up of numerous wires bent manually and arranged in a fixed shape. These structures are severely limited by the manufacturing methods, both in their geometric flexibility and structural integrity. Another disadvantage of conventional wire structures is that their point connections often make them susceptible to corrosion or mechanical stress, which can reduce their service life.

[0005] However, conventional wire mesh structures not only have limitations regarding shape and material diversity, but are also inefficient in their manufacturing process. In particular, the manual bending of the wires and the subsequent joining of the individual elements require high manufacturing precision and result in a standardized geometry that offers little scope for individual design.

[0006] Adjustments are possible. Furthermore, the integration of functional elements such as clips or brackets into such structures is complex, as these must be added in separate work steps. In addition, the assembly process is time-consuming and prone to errors due to the manual labor, which significantly increases production costs.

[0007] The object of the invention is seen as being to further develop the grid structures for lamps known from the prior art.

[0008] According to the invention, the problem is solved by the fact that the shape of the lattice structure corresponds to a number of continuous bars, wherein each bar is deformed transversely to a longitudinal direction of the respective bar, and wherein each bar is arranged in relation to its adjacent bars such that the bars are arranged overlapping and abutting each other in overlapping areas and are connected to one another. The bars of the one-piece lattice structure according to the invention are deformed transversely to their longitudinal direction, which means that they do not run in a straight line. The transverse deformation ensures that the bars form a regular wave shape or another geometrically varied structure, which gives the lattice structure additional stability.

[0009] Advantageously, the bars are arranged with a longitudinal offset from one another. This offset arrangement ensures that, for example, in a wave-shaped configuration, the troughs of one bar meet the peaks of the adjacent bars in the overlap areas. In this way, the bars 3 BEA 4354 P LU lie against each other at the highest and lowest points of the wave shape in the overlap areas, creating a particularly strong and stable connection. This offset arrangement increases structural stability and improves load distribution by distributing mechanical stresses evenly across the entire structure.

[0010] According to the invention, the rods are further inclined obliquely transversely to the longitudinal direction. This oblique orientation results in the rods lying against each other in the overlapping areas, thus creating a larger contact area between the rods. This improved bearing surface achieves higher mechanical stability and strength of the connection in the overlapping areas, as the rods support each other better due to the oblique arrangement. The mechanical stability of the entire grid structure is thus further improved, particularly in areas of high load, while at the same time achieving an aesthetically pleasing appearance of the structure.

[0011] Advantageously, the transverse deformation of the bars is designed such that the bars overlap in certain areas and are connected to each other in these overlapping regions. These overlaps create a strong and stable connection between the adjacent bars, which increases the structural integrity of the lattice structure. The overlapping regions are preferentially located in areas where the bars are curved or deformed, thus reinforcing the cohesion of the structure. 4 BEA 4354 P LU

[0012] According to the invention, the rods are not deformed in a single direction, but can extend in different directions section by section. This section by section change in the direction of extension creates a varying geometry, which contributes to the lattice structure reacting flexibly to both mechanical loads and external influences. This flexibility is particularly advantageous in lighting applications, as it enables a uniform distribution of light while simultaneously providing a robust structure.

[0013] The longitudinal arrangement of the bars is designed so that they are offset from one another. This means that each bar is not parallel to, but offset from, its neighboring bars. In the overlapping areas, the bars abut each other and are interconnected to create a particularly strong and stable structure. This offset arrangement improves the load distribution within the lattice structure and ensures that mechanical stresses are transferred evenly across the entire structure.

[0014] A further advantage of the arrangement of the bars is that, according to the invention, the overlapping areas are arranged along the deformed areas of the bars (e.g., wave crests or wave troughs). This arrangement leads to a structural reinforcement of the lattice structure, since the bars are additionally supported at the points where they are subjected to the greatest stress. This increases the overall stability and strength of the structure. 5 BEA 4354 P LU

[0015] Advantageously, the transverse deformation of the rods can be implemented in various geometric shapes, such as a wavy or polygonal wave pattern. In a wavy design, the rods form soft, continuous curves, ideal for applications where uniform light diffusion is desired. Alternatively, the wave pattern can be approximated by straight sections, resulting in a polygonal structure. This design is particularly robust and suitable for applications requiring increased mechanical strength.

[0016] According to the invention, the rods can also vary in their longitudinal direction. For example, the thickness of the rods can vary along their length to ensure optimal material usage. In areas subjected to high loads, the rods can be thicker, while in less stressed areas they can be made thinner. This reduces the weight of the structure without compromising its stability.

[0017] In addition to the deformation and variation of the rods in the longitudinal and transverse directions, the rods can also have different cross-sectional shapes according to the invention, such as round, oval, rectangular, or trapezoidal cross-sections. The choice of cross-sectional shape can be adapted to the specific requirements of the application. A round cross-section offers uniform load-bearing capacity in all directions, while a rectangular cross-section is particularly well suited for linear loads. 6 BEA 4354 P LU

[0018] The lattice structure according to the invention is advantageously manufactured using a 3D printing process, which enables particularly high geometric precision. This manufacturing process not only increases the structural integrity of the lattice structure, but also allows for the realization of complex geometric shapes and fine details. This is particularly advantageous in the production of luminaires, since the lattice structure not only performs functional tasks such as stability and light control, but also acts as a design element.

[0019] Advantageously, the design provides that the rods are shaped in a wave-like form, with the overlapping areas being formed by the wave crests and troughs of the adjacent rods. This wave-like structure has the additional advantage of being able to diffuse light in a decorative way, making it ideal for designer lamps or atmospheric lighting.

[0020] Alternatively, the rods can have polygonal waveforms, where the waves are approximated by straight sections. This polygonal design offers greater flexibility in adapting the grid structure to specific functional or aesthetic requirements. Polygonal waveforms offer the advantage of being structurally more robust and better suited for applications requiring increased mechanical strength, such as outdoor lighting or industrial lighting solutions.

[0021] According to the invention, it is advantageously provided that the

[0022] The grid structure is arranged in a cylindrical geometry, 7 BEA 4354 P LU, and this shape is particularly advantageous for cylindrical luminaire housings. This cylindrical structure could be ideally used for long, slender luminaires in public buildings or as design objects in modern homes, as it is both functional and aesthetically pleasing.

[0023] It is also advantageously provided according to the invention that the grid structure is designed in a spherical geometry to enable uniform light distribution in spherical luminaires. Spherical grid structures can be used particularly advantageously in pendant luminaires or floor lamps, as they enable uniform all-round illumination and at the same time represent an interesting design element.

[0024] In addition, it is advantageously provided according to the invention that the grid structure is designed in a conical geometry, which is particularly suitable for special luminaire shapes that require a conical light distribution. The conical structure is particularly suitable for luminaires that rely on point illumination, such as spotlights or desk lamps, since it concentrates the light onto a specific area.

[0025] According to the invention, the grid structure can advantageously also have thermally optimized areas which improve heat dissipation through additional structural elements such as cooling fins or ventilated segments. This is particularly advantageous for high-performance luminaires with intense light sources in order to prevent overheating of the luminaire. 8 BEA 4354 P LU

[0026] To achieve particularly precise adaptation to geometric and functional requirements, the invention advantageously provides that the shape and density of the structure are generated algorithmically. This makes it possible to realize complex shapes and asymmetrical geometries that would not be achievable with conventional methods. The algorithmic control allows the grid structure to be dynamically adapted to different lighting requirements, for example, to create targeted lighting accents or to achieve glare-free light in work areas.

[0027] According to the invention, the grid structure can advantageously be designed to possess sound-absorbing properties. This can be achieved by incorporating materials with high sound absorption or by a special grid geometry that breaks up sound waves and thus reduces the noise level in rooms.

[0028] According to the invention, it is advantageously provided that the one-piece lattice structure can be manufactured from various materials such as plastic, metal, ceramic, or wood. This makes it possible to achieve specific physical properties such as lightness, flexibility, or thermal conductivity and to adapt the structure to the requirements of the respective application. One embodiment according to the invention can, for example, consist of the lattice structure being made of a thermally conductive material such as metal, which improves heat dissipation from hot light sources in lighting applications.

[0029] Another advantageous embodiment provides that different materials are used within a single 9 BEA 4354 P LU

[0030] The lattice structure can be combined. By using multi-component 3D printing processes, certain areas of the structure can be made from high-strength materials, while other areas consist of lighter or more flexible materials to achieve an optimal balance between stability and flexibility.

[0031] To further improve the structural integrity and functionality of the lattice structure, the invention advantageously provides that functional elements such as clips, brackets, or other fastening elements are an integral part of the lattice structure and are printed directly with the structure using the 3D printing process. This eliminates separate assembly steps, increasing manufacturing efficiency and improving the structure's flexibility for different applications. Additionally, the integration of such functional elements advantageously enables the lattice structure to be directly combined with electronic components, such as sensors or wireless controllers, which are integrated directly into the luminaire.

[0032] Advantageously, according to the invention, the grid structure can be modular, allowing individual segments of the structure to be removed or added. This offers flexible adaptation to different lamp types or enables quick reconfiguration, for example during maintenance work or design changes.

[0033] According to the invention, it is advantageously provided that the one-piece lattice structure is manufactured in one piece using a 3D printing process. This manufacturing method not only achieves high geometric precision, but also creates the possibility of realizing complex structures without additional connecting elements or assembly steps. Furthermore, 3D printing offers the possibility of quickly and cost-effectively adapting the structure to specific customer wishes or design requirements, which facilitates its use in personalized lighting and the luxury segment.

[0034] According to the invention, the grid structure can be manufactured from sustainable materials such as recycled plastic or biodegradable plastics in order to reduce the ecological footprint of production. This makes the structure particularly advantageous for applications in environmentally conscious building and design projects.

[0035] To optimize the weight of the lattice structure, the invention advantageously provides that the structure contributes to weight reduction without compromising structural stability. One implementation could be the use of ultralight materials such as carbon fibers, which not only reduce weight but also improve the strength and durability of the structure. A weight-reduced lattice structure can also be advantageously used in portable luminaires that need to be transported frequently, such as outdoor lights or mobile lighting units for events.

[0036] The grid structure also offers the advantage that it can be used as a reflector or light diffuser in lighting applications. Through a targeted 11 BEA 4354 P LU

[0037] Surface treatment of the grid structure, such as a matte or glossy coating, can further optimize the reflection and scattering of light to create different lighting effects.

[0038] According to the invention, it is advantageously provided that the grid structure is used as part of a luminaire with a lamp, wherein the grid structure is arranged in the light emission area of ​​the lamp. This enables a uniform light distribution and reduces glare. In addition, the grid structure could be provided with a special coating that filters UV light, making it ideal for applications in sensitive areas such as art galleries or museums.

[0039] According to the invention, it is advantageously provided that the grid structure contributes to the uniform distribution of light and shadow within the illumination area of ​​the luminaire. This enables a harmonious light diffusion that is both functionally and aesthetically pleasing. One possible implementation would be a grid structure with variable density to allow more light to pass through in certain areas and to create shadows in other areas, resulting in dynamic and atmospheric lighting.

[0040] According to the invention, the grid structure can advantageously also have different light transmittances, with denser areas allowing less light to pass through and more transparent areas creating targeted light accents. This variant is particularly suitable for decorative luminaires or artistic applications. 12 BEA 4354 P LU

[0041] Light installations are advantageous because they can create unique lighting effects.

[0042] Further advantageous embodiments are explained in more detail with reference to the examples shown in the drawing.

[0043] It shows:

[0044] Figure 1 is a schematic representation of a portion of a grid structure shown in a plane.

[0045] Figure 2 shows a schematic sectional view of a section of the part shown in Figure 1, perpendicular to the plane shown in Figure 1 and

[0046] Figure 2 shows a schematic representation of a grid structure inserted into a lamp.

[0047] Figures 1 and 2 each show a schematic representation of a one-piece, wave-shaped lattice structure 1, which was produced by a 3D printing process. The lattice structure 1 consists of several continuous bars 2, which are offset longitudinally and wave-shaped transversely to the longitudinal direction. The bars 2 are arranged such that they overlap and abut each other in the overlap regions 3. This is achieved by the individual bars being offset from each other longitudinally. In the overlap regions 3, the bars 2 are connected to each other, resulting in a stable and rigid structure. The overlap regions 3 are created by the regular intersection of the wave crests 4 and wave troughs 5 of the adjacent bars.This geometric arrangement contributes to the structural integrity of the lattice structure 1 and distributes mechanical loads evenly over the entire structure.

[0048] The 3D printing process allows for the precise manufacturing of the lattice structure 1, making it possible to create both delicate and robust structures with high accuracy. This is particularly advantageous because the production of such a complex structure would not be possible using conventional methods.

[0049] Figure 2 clearly shows that the bars 2 are inclined obliquely transversely to the longitudinal direction. In this way, the bars 2 lie on top of each other or one above the other in the overlapping areas 3.

[0050] Figure 3 shows a perspective view of a one-piece grid structure 1 inserted into a luminaire 6. The grid structure 1 has a conical shape and is arranged in the light emission area 7 of the lamp 8. The bars 2 of the grid structure 1 are conical in this embodiment and are positioned to ensure uniform light distribution while simultaneously serving as a decorative element.

[0051] The conical arrangement of the rods 2 causes the light emitted by the lamp 8 to be diffused, ensuring pleasant, glare-free illumination. According to the invention, this grid structure 1 is not only functional but also contributes to an aesthetically pleasing design, which is enhanced by the uniform 14 BEA 4354 P LU

[0052] Arrangement of the rods 2 and the precision of the 3D-

[0053] The printing process is made possible. The one shown in Figure 2

[0054] Lattice structure 1 can be made from various materials such as

[0055] They consist of plastic, metal or ceramic, depending on the requirements of the respective application.

[0056] In this design, the grid structure 1 not only offers stability and functionality, but is also particularly lightweight and resistant, which allows its use in various lighting solutions, including

[0057] Interior lighting, designer lighting and technical applications.

[0058] The figures show exemplary individual elements of several similar elements, each marked with a reference symbol.

Claims

15 BEA 4354 P LU PATENT CLAIMS 1. One-piece grid structure (1) for a luminaire (6) whose shape corresponds to a number of continuous bars (2), wherein each bar (2) is deformed transversely to a longitudinal direction of the respective bar (2), wherein each bar (2) is arranged to its adjacent bars (2) such that the bars (2) are arranged overlapping and adjacent to each other and connected to each other in overlapping areas (3).

2. One-piece lattice structure (1) according to claim 1, characterized in that the bars (2) are designed in a wave-like manner, wherein the overlapping areas (3) are formed by the wave crests (4) and wave troughs (5) of the adjacent bars (2).

3. One-piece lattice structure (1) according to claim 1, characterized in that the bars have polygonal waveforms, wherein the waveform is approximated by straight sections.

4. One-piece lattice structure (1) according to one of the preceding claims, characterized in that the rods (2) are designed such that the lattice structure (1) forms a cylinder.

5. One-piece lattice structure (1) according to one of claims 1 to 3, characterized in that the rods (2) are designed such that the lattice structure (1) is spherically shaped. 16 BEA 4354 P LU 6. One-piece lattice structure (1) according to one of claims 1 to 3, characterized in that the rods (2) are designed such that the lattice structure (1) forms a conical shape.

7. One-piece lattice structure (1) according to one of the preceding claims, characterized in that it is manufactured in one piece using a 3D printing process.

8. One-piece lattice structure (1) according to one of the preceding claims, characterized in that the one-piece lattice structure (1) is made of plastic, metal, ceramic or wood.

9. One-piece lattice structure (1) according to one of the preceding claims, characterized in that the one-piece lattice structure (1) has functional elements.

10. Luminaire (6) with a lamp (8) and a one-piece grid structure (1) according to one of the preceding claims, characterized in that the one-piece grid structure (1) is arranged in a light emission area (7) of the lamp (8).

11. Luminaire (6) according to claim 10, characterized in that the one-piece grid structure (1) serves as a reflector for scattering and glare reduction of the light emitted by the lamp (6).

12. Luminaire (6) according to claim 10 or 11, characterized in that the one-piece grid structure (1) is designed to BEA 4354 P LU The luminaire (6) is arranged to generate a uniform distribution of light and shadow in an illumination area.

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