Linear lighting device for furniture elements

Abstract

Lighting device (100) for furniture elements, comprising: - an elongated profile (10) whose rear side points in a direction that defines a mounting direction, with a holding device (12) which extends longitudinally along the rear side of the profile (10); - a luminaire body (20) arranged on the rear of the profile (10) and extending longitudinally along the retaining device (12), the luminaire body (20) comprising: - one or more lighting units arranged in the luminaire body (20); - cylindrical mounting elements (26a, 26b) which are spaced apart from each other in the longitudinal direction of the luminaire body (20) and project from the luminaire body (20) in the mounting direction.

Description

[0001] The present invention relates to a lighting device for furniture elements, with an elongated profile, with a holding device extending longitudinally along the rear of the profile; and with a luminaire body extending longitudinally along the holding device, wherein the luminaire body comprises a translucent luminaire profile in which one or more luminaire units are arranged.

[0002] The object of the invention is to create a lighting device for furniture elements that can be mounted without tools or visible screws and / or fasteners. A further object of the invention is to create a panel lighting system that allows for the easy positioning and mounting of multiple lighting devices.

[0003] It is desirable that a lighting device for furniture, especially furniture elements such as wall panels, achieves uniform, point-free illumination of the furniture elements without glare. For a high-quality appearance, precise alignment of the lighting device, especially multiple lighting devices, is crucial when installed. Furthermore, ease of installation is desirable. However, mounting lighting devices using screws or adhesives is costly and time-consuming. Moreover, such fastening methods do not yield the desired results in industrial processes, or they increase the effort required to position the lighting device on the furniture element.Grooves incorporated into furniture elements to guide a lighting device are also problematic, as a groove can only be created to the length of the lighting device, which is only possible via a separate machining step of the furniture elements, for example on a CNC machining center, and this significantly increases production costs.

[0004] One or more of these problems are solved by a lighting device according to claim 1. Advantageous embodiments and further developments of the lighting device according to the invention are specified below and in the dependent claims.

[0005] According to one aspect of the invention, a lighting device for furniture elements comprises an elongated profile, the rear of which faces in a direction defining a mounting direction, with a holding device extending longitudinally along the rear of the profile; and a luminaire body arranged on the rear of the profile and extending longitudinally along the holding device. The luminaire body comprises: one or more luminaire units arranged within the luminaire body; and cylindrical mounting elements spaced apart from one another longitudinally along the luminaire body and projecting from it in the mounting direction.

[0006] One advantage of this lighting fixture is its integrated mounting elements. The cylindrical mounting elements allow for easy installation and alignment of the fixture on a furniture element, such as a wall panel. This is because the cylindrical mounting elements are inserted into (circular) openings or bores. Specifically, a press fit can be achieved in openings adapted to the outer circumference of the mounting elements. Such openings can be easily, quickly, and with high precision machined on a CNC machining center. This allows for precise alignment without the need for complex machining of the furniture element.

[0007] The cylindrical mounting elements are preferably aligned along a central plane of the luminaire body and / or the profile's holding device. This central plane runs longitudinally along the profile and in the mounting direction. In certain embodiments, the luminaire body comprises exactly two of the cylindrical mounting elements. The cylindrical mounting elements can be arranged at the ends of the luminaire body. Preferably, the luminaire body is held by the holding device.

[0008] In embodiments, the luminaire body comprises a translucent luminaire profile in which one or more luminaire units are arranged.

[0009] The luminaire body may further comprise end caps, each arranged at one longitudinal end of the luminaire profile. Preferably, the end caps are connectable to the mounting device. The cylindrical mounting elements may each protrude from an end cap in the mounting direction.

[0010] In some embodiments, one of the mounting elements comprises a connecting element designed to fix the corresponding end cap to the profile (in particular to the holding device). In other embodiments, one of the mounting elements (in particular the other mounting element) is designed as a cable entry point for a power supply for the lighting units. The connecting element of one mounting element can be designed as a screw designed to force-fit the mounting element to the holding device of the profile. The connecting element can be configured to position the lighting device. The connecting element of the other mounting element can be designed as a feedthrough designed to guide a power supply, in particular a power cable, from a power source to the lighting units.Thus, a mounting element of the lighting device can be designed as a cable entry point for a power supply for the lighting units.

[0011] In some embodiments, radially spaced ribs are formed along the longitudinal surfaces of the cylindrical mounting elements, projecting from the surface. These ribs can taper towards the surface in the mounting direction. The ribs can improve the press fit of the mounting elements in corresponding mounting openings. The mounting elements, with their radially spaced ribs, enable tool-free assembly of the lighting device. The ribs can be referred to as connecting ribs.

[0012] The ribs can be radially tapered outwards from the outer surface of the mounting elements. The ribs can also be tapered in the mounting direction. The mounting elements and / or the ribs can be designed to be elastic.

[0013] The profile can be a metal profile, in particular an aluminum profile. The profile can also be made of plastic or another material. The profile can have a flat front. The front forms a visible surface. The visible front of the profile can be anodized, powder-coated, or painted. The profile can have a rectangular front. The profile can be strip-shaped or elongated, in particular straight. Elongated here means that the length of the profile is at least a multiple of its transverse extent (width).

[0014] The luminaire body or the translucent luminaire profile can be translucent, milky, or milky-opaque to achieve uniform, point-free illumination of a furniture element without visible light points. This creates a lighting device that allows a furniture element to be illuminated evenly and without glare by the light units arranged in the translucent luminaire profile, which is located on the back of the profile.

[0015] The lighting profile can be connected to the end caps by means of force-fit, form-fit, and / or material-fit connections, or can be connected in the first place. The lighting units can be LED units, in particular white or colored LEDs. The mounting elements can be made of plastic.

[0016] In some embodiments, the mounting elements are hollow cylindrical with a central through-hole. The mounting elements can be designed as a sleeve. The mounting elements can be integrally formed with the end caps. The mounting elements can be connected to the end caps by form-fit, force-fit, or material-fit connection.

[0017] In some embodiments, the luminaire profile and / or the end caps taper towards the mounting direction. The luminaire profile and / or the end caps can have an isosceles trapezoidal cross-section. The trapezoidal shape of the luminaire profile and / or the end caps allows for a wider viewing angle of the lighting device, particularly the luminaire body, without the distracting effect of a direct view of the luminaire profile.

[0018] In some embodiments, the holding device comprises two webs, the end caps of which can be engaged with the two webs by sliding them on. Each web may have an undercut. The holding device and the end caps may be designed as a tongue-and-groove system. The webs may have a T-shaped cross-section. The end caps may have longitudinal projections extending transversely to the webs, which can be engaged with the webs. The end caps may be slidably connected to the webs.

[0019] According to a further aspect of the invention, a panel lighting system comprises at least one lighting device of the type described herein, and a furniture panel with mounting openings for the at least one lighting device. The mounting openings can be circular. The mounting openings are preferably adapted to the outer contour of the mounting elements to allow a press fit of the mounting elements in the mounting openings. The mounting openings can be configured to connect the cylindrical mounting elements to the furniture panel in a form-fitting press connection.

[0020] The furniture panel can be made of wood, plastic, or another material. The mounting openings can be created, for example, during the manufacturing process of holes for wall mounting brackets on the furniture panel. The lighting device can be connected to the furniture panel using the mounting elements. In particular, the mounting elements can be press-fitted to the furniture panel via the ribs. The end caps and / or the lighting profile can be bonded to the furniture panel using a material-based adhesive, especially double-sided tape. The other mounting element can serve as a cable entry point for a power supply for the lighting units through the furniture panel.

[0021] Panel lighting has the advantage that the mounting holes for attaching the lighting fixture can be created during the manufacturing process of the furniture panel, for example, during the drilling of the wall mounting brackets, eliminating the need for subsequent drilling in a separate step. Another advantage is that the lighting fixture can be mounted and positioned on the furniture panel without tools.

[0022] According to a further aspect, the invention further comprises a panel lighting system with panel lighting according to the invention, at least one further lighting device of the type described herein, and at least one piece of furniture, each with at least one furniture back panel, wherein the furniture back panel includes respective mounting openings for the at least one further lighting device, the mounting openings being designed to connect the cylindrical mounting elements of the at least one further lighting device to the furniture back panel in a form-fitting press connection. The mounting openings can be circular.In embodiments, the mounting openings of the furniture panel for at least one of the at least one lighting device of the panel lighting and the mounting openings of the furniture for at least one of the at least one further lighting device are aligned on a common axis in a viewing direction towards the front of the respective lighting device, in particular in a viewing direction directly towards the front. In embodiments, the mounting openings of the furniture panel and the mounting openings of the furniture are arranged linearly on a common axis.

[0023] The panel lighting system has the advantage that the mounting holes for attaching the lighting fixtures to the furniture panel and the back panel can be created during the manufacturing process of the furniture panel and back panel, eliminating the need for subsequent drilling in a separate step. The lighting fixtures can be mounted without the need for grooves, screws, or additional tools. Another advantage of the panel lighting system is that the lighting fixtures, arranged along a linear axis, can be mounted in such a way that they appear to be separated only by a frame wall of the furniture.

[0024] The furniture panel can be positioned at least partially behind the furniture. At least one lighting device can be attached to the furniture panel. At least one lighting device can be attached to the visible surface of a furniture back panel facing a furniture opening. At least one lighting device of the furniture panel can be aligned with at least one lighting device on a furniture back panel along a linear axis (at least in one viewing direction directly towards the front).

[0025] The mounting openings of the furniture panel can be arranged (at least in one viewing direction directly at the front) on a linear axis with the mounting openings of at least one furniture back panel. The furniture panel and the furniture back panel can be made of the same material and / or with the same finish.

[0026] The following are examples of implementation explained in more detail with reference to the drawings. They show: Fig. 1a a top view of a lighting device according to one embodiment; Fig. 1b a bottom view of the lighting device; Fig. 2 a longitudinal view of the lighting device; Fig. 3 an end view of the lighting device; Fig. 4 a perspective view of the lighting device from behind; Fig. 5a a front view of a panel light according to one embodiment; Fig. 5b a rear view of the panel lighting; Fig. 6a a front view of a panel lighting system according to one embodiment; and Fig. 6b a rear exploded view of the panel lighting system.

[0027] In the figures, identical or corresponding elements are marked with the same reference symbols.

[0028] The Fig. Figure 1a shows a top view of a lighting device 100 according to one embodiment. As in Fig. As shown in Figure 1a, the lighting device 100 comprises an elongated aluminum profile 10. The top surface of the profile 10 corresponds to the visible surface of the profile 10. Fig. Figure 1b shows a bottom view of the lighting device 100 according to the embodiment. The back of the profile 10 points in a direction that defines a mounting direction. As shown in Fig. As shown in Figure 1b, the profile 10 includes a retaining device 12 that extends longitudinally along the rear side of the profile 10. The retaining device 12 is integrally formed with the profile 10. The retaining device 12 comprises two webs 14a, 14b that extend longitudinally along the profile 10.

[0029] As in Fig. Figure 3, which shows an end-side side view of the lighting device according to the embodiment, shows the webs 14a, 14b in cross-section in a central region of the profile 10. The webs 14a, 14b are T-shaped.

[0030] As in Fig. Figure 2, which shows a longitudinal side view of the lighting device according to the embodiment, shows the lighting device 100 comprising a luminaire body 20 extending longitudinally along the holding device 12. The luminaire body 20 comprises a translucent luminaire profile 22 in which several luminaire units are arranged. The luminaire profile 22 is milky in color. The luminaire units are designed as LEDs. End caps 24a, 24b are arranged at each of the longitudinal ends of the luminaire profile 22. The end caps 24a, 24b are connected to the luminaire profile 22. The end caps 24a, 24b are connected to the holding device. The end caps 24a, 24b have projections extending longitudinally to the central axis of the profile 10, which engage with the webs 14a, 14b. The end caps 24a, 24b are slidably connected to the webs 14a, 14b. The luminaire body 20 has cylindrical mounting elements 26a, 26b.The mounting elements 26a, 26b are each arranged on an end cap 24a, 24b. The mounting elements 26a, 26b are integrally formed with the top surface of the end caps 24a, 24b. The mounting elements 26a, 26b are, as shown in the . Fig. 2, Fig. 3 to Fig. 4 shown, designed to protrude from the end caps 24a, 24b in the assembly direction.

[0031] As in Fig. Figure 4, which shows a perspective view of the lighting device according to the embodiment, shows the mounting elements 26a, 26b as hollow cylinders with a central opening 30. One of the mounting elements 26a comprises a connecting element 32, which is arranged in the opening 30. The connecting element 32 is designed for the force-fit fixing of the corresponding end cap 24a with the profile 10. The connecting element 32 is designed as a screw. The other of the mounting elements 26b is designed as a cable entry for a power supply 34 for the lighting units.

[0032] As in Fig. As shown in Figure 3, radially spaced ribs 28a and 28b are formed on the longitudinal surfaces of the mounting elements 26a and 26b. The sections of the ribs 28a facing the mounting elements 26a and 26b are radially spaced along their longitudinal sides and are parallel to the surface of the mounting elements 26a and 26b. The sections of the ribs 28b facing away from the mounting elements 26a and 26b taper towards the surface in the mounting direction. The ribs 28a and 28b taper radially outwards from the surface of the mounting elements 26a and 26b. The ribs 28b taper in the circumferential direction of the mounting elements 26a and 26b in the mounting direction. The luminaire profile 22 and the end caps 24a, 24b are each tapered towards the mounting direction. The luminaire profile 22 and the end caps 24a, 24b have an isosceles trapezoidal cross-section.

[0033] The Fig. 5a und Fig. Figure 5b shows a panel lighting system 200 according to one embodiment in a front view and a rear view. The panel lighting system 200 comprises at least one lighting device 100 and a furniture panel 40. The furniture panel 40 is made of wood and has several circular mounting openings 42a, 42b. The lighting devices 100 are positively connected to the furniture panel 40 by means of a press fit via the respective mounting elements 26a, 26b and are arranged on the front of the furniture panel 40. In particular, the mounting elements 26a, 26b are positively press-fitted to the mounting openings 42a, 42b of the furniture panel 40 by means of the ribs 28. The lighting profile 22 is bonded to the furniture panel 40 by means of double-sided adhesive tape for support. Each mounting element 26b of the lighting devices 100 is designed as a cable entry for a power supply 34 for the respective lighting units.The respective other mounting element 26b of the lighting devices 100 comprises a connecting element 32, which is designed to position the corresponding lighting devices 100.

[0034] The Fig. 6a and Fig. Figure 6b shows a panel lighting system 300 according to one embodiment in a front view and a rear exploded view. As in Fig. As shown in Figure 6a, the panel lighting system 300 comprises a panel light 200, at least one lighting device 100, and at least one piece of furniture 50. The piece of furniture 50 comprises at least one furniture back panel 50b. As shown in Figure 6a, the panel lighting system 300 comprises a panel light 200, at least one lighting device 100, and at least one piece of furniture 50. The piece of furniture 50 comprises at least one piece of furniture back panel Fig.As shown in Figure 6b, the furniture back panel 50b includes mounting openings 52a and 52b. The mounting elements 26c and 26d of the lighting device 100 are positively press-fitted to the mounting openings 52a and 52b of the furniture back panel 50b. The lighting device 100 is located on the visible surface of the furniture back panel 50b opposite a furniture opening. The mounting openings 42a and 42b of the furniture panel 40 and the mounting openings 52a and 52b of the furniture 50 are arranged linearly along a respective axis A. The lighting device 100 of the furniture panel, arranged along a respective axis A, and the corresponding lighting device 100' of the furniture back panel 50b are positioned such that the lighting devices 100 and 100' are separated by the top panel 50c of the furniture 50 and approach each other at their end faces.

[0035] The subject matter of the invention is not limited to the features of the individual embodiments, but can also include any technically possible combination of the described embodiments which falls under the claims.

Claims

[1] Lighting device (100) for furniture elements, comprising: - an elongated profile (10) whose rear side points in a direction that defines a mounting direction, with a holding device (12) which extends longitudinally along the rear side of the profile (10); - a luminaire body (20) arranged on the rear of the profile (10) and extending longitudinally along the retaining device (12), the luminaire body (20) comprising: - one or more lighting units arranged in the luminaire body (20); - cylindrical mounting elements (26a, 26b) which are spaced apart from each other in the longitudinal direction of the luminaire body (20) and project from the luminaire body (20) in the mounting direction. [2] Lighting device (100) according to claim 1, wherein the light body (20) further comprises: - a translucent luminaire profile (22) in which one or more luminaire units are arranged; - End caps (24a, 24b) which are each arranged at a longitudinal end of the luminaire profile (22), wherein the end caps (24a, 24b) can be connected to the holding device (12). [3] Lighting device (100) according to claim 2, wherein one of the mounting elements (26a) comprises a connecting element (32) designed to fix the corresponding end cap (24a) to the profile (10), and wherein the other of the mounting elements (26b) is designed as a cable entry for a power supply (34) for the lighting units. [4] Lighting device (100) according to claim 2 or 3, wherein the light-transmitting luminaire profile is translucent or milky colored or milky clouded. [5] Lighting device (100) according to one of claims 2 to 4, wherein the luminaire profile (22) and / or the end caps (24a, 24b) are each tapered towards the mounting direction. [6] Lighting device (100) according to one of claims 2 to 5, wherein the holding device (12) comprises two webs (14a, 14b) each having an undercut, wherein the end caps (24a, 24b) can be brought into engagement with the two webs (14a, 14b) by sliding them on. [7] Lighting device (100) according to one of the preceding claims, wherein radially spaced ribs (28) are formed on the longitudinal side of the cylindrical mounting elements (26a, 26b), which project from the cylindrical surface and are tapered towards the cylindrical surface in the mounting direction. [8] Lighting device (100) according to one of the preceding claims, wherein the mounting elements (26) are designed as hollow cylinders with a central passage (30). [9] Panel lighting (200), comprising - at least one lighting device (100) according to one of claims 1 to 5; and - a furniture panel (40) with mounting openings (42a, 42b) for the at least one lighting device (100), wherein the mounting openings (42a, 42b) are designed to allow the cylindrical mounting elements (26a, 26b) to be positively press-fitted to the furniture panel (40). [10] Panel lighting system (300), comprising - a panel lighting (200) according to claim 9; - at least one further lighting device (100) according to any one of claims 1 to 8; and - at least one piece of furniture (50) with at least one furniture back panel (50b), wherein the furniture back panel (50b) includes respective mounting openings (52a, 52b) for at least one further lighting device (100), wherein the mounting openings (52a, 52b) are designed to connect the cylindrical mounting elements (26c, 26d) of the at least one further lighting device (100) to the furniture back panel (50b) in a form-fitting press connection, wherein the mounting openings (42a, 42b) of the furniture panel (40) for at least one of the at least one lighting device (100) of the panel lighting (200) and the mounting openings (52a, 52b) of the furniture (50) for at least one of the at least one further lighting device (100) are aligned in a viewing direction directly towards the front of the respective lighting device (100) on a common axis.

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