CN114829836B - Vertical light fixtures with alignment features - Google Patents

Abstract

The invention relates to a longitudinal luminaire (1) extending along a longitudinal axis (L), the luminaire (1) comprising a longitudinal track profile (2), arranged in the internal space (20) of the track profile (2) with LEDs ( The longitudinal light source (3) of 31), a plurality of optical elements (40) formed in an optical group (4) and corresponding to the LEDs (31) arranged in a row, and an attachment clip (5). The attachment clip (5) includes a first attachment section (50) for retaining the attachment clip (5) at the rail profile (2) for positioning the light source (3) relative to the attachment clip (5) A first fixing section (51) that is relatively fixed, and a first alignment section (52) for aligning the attachment clip (5) with respect to the optical group (4), so that in the optical element (40) Each is functionally located to an associated LED (31).

Description

Vertical light fixtures with alignment features

The invention relates to a longitudinal luminaire extending along a longitudinal axis and comprising a longitudinal track profile, a longitudinal light source and a plurality of optical elements.

Such longitudinal luminaires are well known in the art. Typically, a plurality of optical elements are provided separately and each positioned/aligned relative to the corresponding LED of the light source to allow for the desired light output characteristics.

Multiple optical elements can also be brought together to form optical groups, which are then fixed to rail profiles. For example, by screwing through the PCB of the optical group and light source, these components can be aligned with each other. However, this requires tedious positioning of these elements and increases the installation effort of the luminaire. Additionally, such a rigidly fixed light source may be prone to mechanical defects due to thermal expansion.

It is therefore an object of the present invention to provide a longitudinal luminaire of the above mentioned type, which allows easy installation and alignment of corresponding optical features.

This object is achieved by the subject-matter of the independent claims. The dependent claims further develop the central idea of the invention.

According to one aspect, the invention relates to a longitudinal luminaire extending along a longitudinal axis. The luminaire consists of longitudinal track profiles that define the interior space. The track profile includes longitudinal openings for access to the interior space. The luminaire also includes a longitudinal light source arranged in the interior space and extending parallel to the longitudinal axis. The light source includes a longitudinal PCB (Printed Circuit Board) equipped with a plurality of LEDs (Light Emitting Diodes) arranged in a row. The luminaire also includes a plurality of optical elements integrally (i.e. integrally) formed into an optical group and arranged in rows corresponding to the LEDs, such that each of the optical elements can function in a functional manner when the optical group is attached to the track profile. Positioned on at least one of the LEDs such that the optical element can optically affect light emitted from the associated LED. The light fixture also includes attachment clips. The attachment clip includes a first attachment section, a first securing section and a first alignment section. The first attachment section may be attached to or to a corresponding second attachment section of the rail profile for retaining the attachment clip at the rail profile at least in a direction orthogonal to the longitudinal axis; preferably vertically in the straight direction, i.e. in the direction towards the longitudinal opening. The first securing section secures the light source relative to the attachment clip via a corresponding second securing section of the light source. The first alignment section aligns the attachment clip relative to the optical group via a corresponding second alignment section of the optical group such that each of the optical elements is functionally positioned to the associated LED.

Using a longitudinal luminaire according to the invention, it is possible to facilitate the installation of optical features, i.e. light sources with LEDs on the one hand and associated optical elements on the other hand, since they can be easily attached by means of an attachment clip as a kind of attachment adapter Track profiles. Furthermore, thanks to the alignment function of the attachment clip with the optical element or optical group on the one hand and the reliable fixation of the clip with respect to the light source on the other hand, the alignment of the light source with respect to the optical group can be obtained easily and automatically, so that in the optical element Each of can be functionally positioned relative to the associated LED; preferably, at least along the longitudinal axis direction, but also in any other possible direction if desired.

The attachment clip may have a generally U-shaped layout, in which two opposing side arms are connected by connecting sections and define a receiving space for longitudinally passing through and therefore receiving the light source. The clip thus securely surrounds the light source so that it cannot slip sideways out of the attachment clip during installation. Furthermore, in association with the rail profile, the attachment clip can easily and reliably receive the light source and hold the light source to and preferably against the rail profile.

The connecting section can project towards the receiving space. Therefore, reliable contact of the attachment clip with the light source can be obtained, thereby further reliably attaching the light source to the track profile. Thus, a flat contact between the track profile and the light source is obtained, which can further have a positive influence on the heat transfer from the light source to the track profile during operation of the luminaire.

The side arms may each comprise a first attachment section. The first attachment section may preferably be provided at the distal end of the respective side arm relative to the connecting section and thus protrudes towards the track profile to allow easy attachment of the first and second attachment sections.

The connecting section may preferably comprise a first fastening section on the side facing the receiving space. Thus, a reliable connection of the first and second fastening sections can be achieved. Furthermore, in combination with the protruding arrangement of the connecting sections, a light and reliable connection of the first and second fastening sections can be ensured.

The connection section may preferably comprise a first alignment section on the side opposite the receiving space. The first alignment section is therefore positioned so that it can project directly towards the optical group, thereby allowing easy layout and reliable connection of the first and second alignment section.

The attachment of the attachment clip to the rail profile is preferably obtained by a form fit and/or frictional connection between the first and second attachment section. In the same way, the fixation of the light source to the attachment clip is also preferably obtained by a form-fit and/or frictional connection of the first and second fixation sections. In the same way, the alignment of the optical group with the attachment clip is preferably obtained by a form fit and/or frictional connection of the first and second alignment sections. Therefore, connections can be flexibly designed as needed to ensure reliable connections between corresponding connection partners.

The first attachment section may comprise a clamping section, such as a clamping spring, and/or a locking section, such as a snap connection element, and/or a latching section, such as a tooth-like or serration-like structure. The second attachment section may then comprise corresponding arrangements for obtaining attachment of the attachment clip to the rail profile, such as recesses, longitudinal grooves, corresponding snap connection elements and/or latching structures. These structural elements therefore allow reliable attachment as required. For example, the clamping section may allow easy attachment due to simple direct insertion of the cooperating counterpart. The snap connection element may allow a secure attachment including a form fit. The latch sections may allow attachment at different insertion locations. Therefore, the receiving space between the attachment clip and the corresponding track profile section can vary in size/distance, allowing PCBs with different thicknesses to be inserted, which further increases the flexibility of the luminaire.

The first securing section may comprise a protrusion or recess, preferably a pin-like protrusion. The second fixation section may then comprise a corresponding layout to obtain the fixation of the light source to the attachment clip, such as recesses or protrusions, preferably recesses or through-holes in the PCB. Preferably, corresponding cooperating partners for fastening have the same cross-section and dimensions, thus allowing a tight fastening and assembly at least in the direction along the longitudinal axis.

The first alignment section may comprise a protrusion having at least two first surface sections remote from each other along the longitudinal axis (and preferably facing at least partially in the direction of the longitudinal axis). The second alignment section may then comprise at least two second surface sections also facing away from each other along the longitudinal axis (and preferably facing at least partially in the direction of the longitudinal axis). Each of the first surface segments then preferably adjoins one of the second surface segments respectively for aligning the optical group with the attachment clip, preferably at least relative to the longitudinal axis direction. Thus, an easy layout can be provided with which easy and automatic alignment of the cooperating elements can be achieved, thereby further facilitating the assembly of the luminaire.

The second surface section may be part of the outer and preferably rear profile of the optical group, preferably facing the space between two adjacent optical elements of the optical group. The alignment section is therefore located between the light paths through the optical group, ie through the optical elements, and therefore does not obstruct the optical light output.

The rail profile preferably includes a U-shaped cross-section when viewed in the direction of the longitudinal axis. The rail profile therefore has two opposite side walls, which laterally delimit the longitudinal opening and are connected by a rear wall to delimit the interior space. Thus, an easy layout of rail profiles can be provided, which rail profiles can also be produced in an easy manner, for example by extrusion molding or continuous casting.

The rear wall may comprise a second attachment section on the side facing the interior space. The attachment of the clip and therefore the light source can therefore be done on the side opposite the longitudinal opening and therefore in a preferred position for effective light output. Furthermore, the second attachment section is thus provided in an easily accessible position.

The optical group may comprise a first retaining section, preferably an elastically deformable side wall protrusion. The sidewall protrusions may extend longitudinally parallel to the longitudinal axis and are therefore longitudinal sidewall protrusions. The track profile, preferably on the opposite side wall and further preferably on the side facing the interior space, may comprise a second retaining section for mechanically cooperating with the first retaining section to attach the optical group to the track profile. Therefore, it is possible to provide a structure for easy attachment of the optical group to the track profile. Due to the preferably elastically deformable properties of the corresponding first holding section, the optical group can for example simply snap onto the rail profile for its attachment. The rail profile may comprise a (longitudinal) protruding section protruding towards the interior space, said protruding section forming a stop for the optical group when the optical group is inserted into the rail profile in an insertion direction, which is preferably orthogonal to The longitudinal axis and the longitudinal opening may extend orthogonally to the longitudinal axis and the longitudinal opening.

The second attachment section and preferably the second retaining section and preferably the stop, if present, can be made from the longitudinal profile structure of the rail profile. Of course, all other parts of the rail profile can also be produced in the same way from the longitudinal profile structure of the rail profile. Therefore, any desired positioning of the individual features along the longitudinal axis is possible. Also, the light source may be carried in a floating manner along the longitudinal axis to absorb thermal expansion of, for example, the light source or any other component of the luminaire. Due to the provision of the attachment clip, the relative positioning and therefore alignment between the light source and optical group is maintained even during thermal expansion.

The optical elements may be lenses and/or reflectors respectively or any other type of optical element. The optical group or its optical elements may cover and preferably close at least part of the longitudinal opening. Therefore, the flexibility of the luminaire can be further increased. Since the optical group covers the longitudinal opening, the luminaire's luminescence can be optimized and the light output efficiency can be increased.

A plurality of light sources and/or a plurality of optical groups can be arranged in the track profile, preferably arranged in a row parallel to the longitudinal axis. Longitudinal luminaires can therefore be supplied in any desired length while using standard components, e.g. for the light source or optical group.

Each of the light sources may functionally cooperate with at least two of the attachment clips, thereby increasing stability of connection and alignment; depending on the length and size of the light sources. At least one and preferably at least two of the attachment clips may functionally cooperate with an optical group to align it relative to the light source. Therefore, the alignment of all corresponding cooperating pairs can be obtained reliably.

The luminaire may also include mounting elements for mounting the longitudinal luminaire to a mounting surface, such as a wall or ceiling. The mounting elements may preferably include rope suspension devices, mounting adapters such as mounting brackets, and/or longitudinal mounting profiles. The latter preferably has a U-shaped cross-sectional arrangement with its opening facing downwards and into which any suspension or other fixing means can be easily inserted. The mounting profile may therefore comprise any desired and preferably longitudinally extending structural features to allow easy attachment and also preferably detachment of the luminaire components as required.

The luminaire may also comprise lighting electronics, such as drivers or sensors, preferably attached to the track profile, preferably on the outside of its rear wall or to a mounting element, preferably to its longitudinal mounting profile if present. Therefore, the luminaire can be directly equipped with any required electronics. If the lighting electronics are located at the mounting element, these can be used for several such longitudinal luminaires, for example arranged in a row, thus reducing the number of parts.

Further details and advantages of the invention will now be described with reference to the embodiments illustrated in the drawings.

Figure 1 shows a perspective exploded view of a luminaire according to a first embodiment of the invention,

Figure 2 shows a perspective exploded view of a luminaire according to a second embodiment of the invention,

Figure 3 shows a perspective view of the luminaire according to Figure 1,

Figure 4 shows a perspective view of the luminaire according to Figure 2,

Figure 5 shows a side view of a light fixture (without attached clip and light source) according to a third embodiment of the invention,

Figure 6 shows three different perspective views of the optical group of the luminaire according to the invention, with different arrangements of the first retaining section having (a) a medium extension, (b) a longitudinal extension and (c) a short extension. ,

Figure 7 shows two different instructions for attaching the optical group to the track profile of the luminaire according to the invention by (a) linear movement or (b) pivoting movement,

Figure 8 shows a side view of a track profile and attachment clips of a light fixture according to another embodiment of the invention,

Figure 9 shows two different perspective views from (a) bottom and (b) top of the attachment clip of Figure 8,

Figure 10 shows a side view of a track profile and attachment clip of a light fixture according to another embodiment of the invention,

Figure 11 shows two different perspective views from (a) bottom and (b) top of the attachment clip of Figure 10,

Figure 12 shows a side view of the track profile and attachment clips of a further embodiment of the luminaire of the invention, and

Figure 13 shows two different perspective views of the attachment clip of Figure 12 from (a) bottom and (b) top.

The figures show different embodiments and features of a longitudinal light fixture 1 according to the invention. As best shown in Figures 1 to 4, the longitudinal luminaire 1 extends along a longitudinal axis L.

The luminaire 1 includes a longitudinal rail profile 2 defining an interior space 20 . The rail profile 2 includes a longitudinal opening 21 for access to the interior space 20 . Preferably, the rail profile 2 is produced by extrusion molding and therefore has the same cross-section along its longitudinal axis L. The rail profile 2 can be made of metallic material such as aluminum. However, the track profile 2 can also be made of another material, such as plastic. If made of plastic material, the rail profile 2 can also be made by injection molding or the like. The longitudinal opening 21 may extend along the entire length of the longitudinal luminaire 1 so that there is here an open side through which the interior space 20 can be accessed and easily equipped with the features described further below.

The luminaire 1 also includes a longitudinal light source 3 arranged in the interior space 20 and extending parallel to the longitudinal axis L. The light source includes a longitudinal PCB 30 equipped with a plurality of LEDs 31 arranged in rows, ie preferably in one or more rows, as can be seen in Figures 1 and 2 . The luminaire 1 shown here includes four such longitudinal light sources 3, but the invention is not limited to any number of light sources 3. LEDs can be arranged as individual LEDs or in groups at defined locations on the PCB while being spaced a certain distance (i.e., spaced) from adjacent LEDs in the row or groups of LEDs. For example, the group of LEDs can be RGB-LED or any other LED cluster.

The luminaire 1 also includes a plurality of optical elements 40 , which are integrated into the optical group 4 and arranged in a row (ie preferably in one or more rows) corresponding to the LEDs 31 , such that when the optical group 4 is attached to the track profile 2 Each of the optical elements 40 may be functionally positioned (ie, optically cooperative) to at least one of the LEDs 31 such that the optical element 40 may optically affect the light emitted from the associated LED 31 . As shown, the luminaire 1 may comprise a plurality of such optical groups 4; here six optical groups 4. The number of optical groups 4 is not limited by the present invention. Optical element 40 may be a lens and/or (as shown) a reflector, respectively. Of course, the optical element 40 may also be any other type of optical element known in the art. It can be seen, for example in FIG. 5 , that the optical group 4 or its optical element 40 covers and preferably closes at least part of the longitudinal opening 21 .

As mentioned, a plurality of light sources 3 and/or a plurality of optical groups 4 can be arranged in the rail profile 2 , preferably arranged in a row parallel to the longitudinal axis L, as exemplarily shown in the embodiment of FIGS. 1 and 2 .

The luminaire 1 also includes an attachment clip 5, as best shown in Figures 8 to 13 and as shown in Figures 1 and 2. The attachment clip 5 comprises a first attachment section 50 which can be attached to a corresponding second attachment section 22 of the rail profile 2 for at least a direction orthogonal to the longitudinal axis L Hold the attachment clip 5 on the track profile 2. The cooperating pairs, namely the first attachment section 50 and the second attachment section 22 , can also be designed such that they allow to be held (preferably fixed) relative to any other direction, for example also along the longitudinal direction L.

The attachment of the attachment clip 5 to the rail profile 2 can be obtained by a form fit and/or friction connection between the first and second attachment sections 50 , 22 . For example, the first attachment section 50 may comprise a clamping section 500, such as a clamping spring, as shown in the embodiment of Figures 8 to 11, wherein the corresponding first attachment section 50 here has a U-shape. Flexibility is thus allowed to allow the first attachment section 50 to be inserted into the second attachment section 22 , here provided as a kind of recess or longitudinal groove 250 .

The first attachment section 50 can also be a locking section 501 such as a snap connection element. This is illustrated here in FIGS. 8 to 11 by the distal end of the first attachment section 50 , which snaps in the direction of gravity into a corresponding snap of the rail profile 2 , here provided as a (longitudinal) protrusion. The snap connection element 251 forms a seat for the distal end 501 of the first attachment section 50, thereby holding the attachment clip 5 in place.

The first attachment section 50 may also include a latch section 502, such as a tooth-like structure (see Figures 8 and 9), or a saw-tooth structure, for example as shown in Figures 12 and 13. When engaged with the corresponding (longitudinal) latching structure 252 of the track profile 2 , the latch section 502 can allow different attachment positions of the attachment clip 5 to the track profile 2 such that the attachment clip 5 can be positioned relative to the track profile 2 Attach in different locations, thereby increasing the flexibility of attachment features.

The attachment clip 5 also includes a first fixation section 51 for fixing the light source 3 relative to the attachment clip 5 by a corresponding second fixation section 32 of the light source 3 . The fixation of the light source 3 to the attachment clip 5 may preferably be obtained by a form-fit and/or frictional connection of the first and second fixation sections 51 , 32 .

Here, the first fastening section 51 may comprise a protrusion, preferably a pin-like protrusion. The second fixing section 32 may then comprise a corresponding layout to obtain the fixing of the light source 3 to the attachment clip 5, preferably a recess or a through hole in the PCB. For alignment or attachment reasons, such a through hole is usually provided on the standard PCB 30 , which can therefore also serve as the second fastening section 32 . Of course, the first fixing section 51 may for example also be a recess or may have any other structure, and the second fixing section 32 may then be or comprise a corresponding structure, such as extending into or being received by the first fixing section 51 protuberance. The invention is not limited to any type of arrangement of the first and second fixing sections 51, 32, as long as their physical cooperation allows the required fixing between the light source 3 and the attachment clip 5 in the desired manner.

The attachment clip 5 also includes a first alignment section 52 for aligning the attachment clip 5 relative to the optical group 4 by a corresponding second alignment section 42 of the optical group 4 such that each of the optical elements 40 is in The associated LED 31 is functionally located.

The alignment of the optical group 4 with the attachment clip 5 is preferably obtained by a form-fit and/or frictional connection of the first and second alignment sections 52 , 42 . As shown, the first alignment section 52 may comprise a protrusion having at least two first surface sections 53 remote from each other in the direction of the longitudinal axis L or in a direction parallel to the longitudinal axis L. The second alignment section 42 may then comprise at least two second surface sections 43 also remote from each other in the direction of the longitudinal axis L or in a direction parallel to the longitudinal axis L. Each of the first surface sections 53 adjoins a respective one of the second surface sections 43 for aligning the optical group 4 with the attachment clip 5 when assembled.

The second surface section 43 may be part of the outer and preferably rear profile of the optical group 4 , preferably facing (for example in the longitudinal direction L) the space 44 between two adjacent optical elements 40 of the optical group 4 , This is exemplarily shown in Figures 6a to 6c.

For example, as shown in Figures 8 to 13, the attachment clip 5 may have a generally U-shaped layout, with two opposite side arms 55 connected by a connecting section 56 and defined for longitudinal passage through the light source 3 and thus receiving the The receiving space of the light source is 57.

As clearly shown in Figures 8, 10 and 12, the connecting section 56 can project into the receiving space 57; here towards the rail profile 2 and preferably towards its rear wall 24. A reliable adjacency of the light source 3 to the track profile 2 can thus be ensured, for example for a more efficient heat transfer from the light source 3 to the track profile 2 during operation.

The side arms 55 may each comprise a first attachment section 50 , preferably at its distal end 54 relative to the connection section 56 . The connecting section 56 can comprise a first fastening section 51 on the side 58 facing the receiving space 57 . The connecting section 56 may comprise a first alignment section 52 on the side 59 opposite the receiving space 57 or on the side 58 facing the receiving space 57 .

The rail profile 2 preferably comprises a U-shaped cross-section when viewed in the direction of the longitudinal axis L. In this case and as exemplarily shown in FIGS. 5 , 8 , 10 and 12 , the rail profile 2 can comprise two opposite side walls 23 (here longitudinal side walls 23 ) which laterally delimit the longitudinal opening 21 and are connected by a rear wall 24 (here a longitudinal rear wall 24) for defining an interior space 20. The rear wall 24 may comprise a second attachment section 22 on the side 25 facing the interior space 21 .

With reference to Figures 5, 8, 10 and 12, the track profile 2 may also comprise a mounting structure 26 here provided at the rear side 27 of the rear wall 24 opposite the interior space 21, thus extending rearwardly from the track profile 2. The mounting structure 26 may comprise two longitudinal grooves 260 facing each other for receiving, for example, any possible type of mounting element 6 for mounting the longitudinal luminaire 1 to a mounting surface, such as a wall or ceiling. The mounting element 6 can therefore be another part of the present luminaire 1 . The mounting element 6 may preferably comprise a rope suspension device 60 (see for example Figure 4), a mounting adapter 61 such as a mounting bracket, and/or a longitudinal mounting profile 62 (see for example Figures 1 and 3). The longitudinal mounting profile 62 here includes a U-shaped cross-sectional arrangement, thus providing an interior space 63 into which parts of the rail profile 2 or of the mounting element 6 can be introduced for attaching the rail profile 2 to the mounting profile 62 . The longitudinal mounting profile 62 preferably includes longitudinally extending structures 64 to allow corresponding attachment.

The luminaire 1 may also comprise lighting electronics 7, such as a driver 70 or a sensor, which may preferably be attached to the track profile 2, preferably at the outside 27 of its rear wall 24 (see e.g. Figures 2 and 4), or when installed element 6, preferably at its longitudinal mounting profile 62, if present and as exemplarily shown in Figures 1 and 3.

As can be seen for example in Figures 5, 8, 10 and 12, the rear side 27 of the rear wall 24 may also include additional structural features 29, such as here longitudinal guide structures, where additional elements, such as cables 8, may be provided. is received and preferably guided in said longitudinal guide structure.

It can be seen for example in FIG. 5 , also in combination with FIGS. 6 a to 6 c , that the optical group 4 can also comprise a first holding section 45 . The first retaining section 45 may preferably be an elastically deformable side wall protrusion 46 as exemplarily shown in FIG. 5 . The first retaining section 45 can therefore be configured as a kind of flank projection. The track profile 2 and preferably the opposite side wall 23 and further preferably on the side 230 facing the interior 21 may comprise a second retaining section 200 for mechanically cooperating with the first retaining section 45 for attaching the optical group 4 to Track profiles 2. The second retaining section 200 can therefore provide a longitudinal groove section 201 into which the first retaining section 45 (here with lateral protrusions 450 projecting laterally outwards in the embodiment shown) can snap. in the groove section. In order to prevent the optical group 4 from being inserted too far into the inner space 20 , the rail profile 2 can also include a stop structure 202 , when the optical group 4 is inserted into the rail profile 2 , here, through the longitudinal opening 21 , the direction is orthogonal to the longitudinal axis L. , the optical group 4 and preferably the first retaining section 45 rest against said stop structure.

The lateral protrusions 450 may have different dimensions, ie extensions parallel to the longitudinal axis L. For example, very short protrusions can be provided as shown in Figure 6c and are preferably here distributed (evenly) along the first retaining section 45. The lateral protrusion 450 may also have a longer extension in the direction of the longitudinal axis L, for example as shown in Figure 6a. Furthermore, the lateral protrusions 450 may extend entirely along the entire length of the first retaining section 45 or optical group 4, for example as shown in Figure 6b.

The second attachment section 22 and preferably the second retaining section 200 and even the stop structure 202 , if present, can be made from a longitudinal profile structure on the rail profile 2 ; like any other structural element of the rail profile 2 discussed above.

Figures 7a and 7b show two different mounting method options for attaching the optical group 4 to the rail profile 2 (centre). Due to the corresponding arrangement of the optical group 4 , in particular its first holding section 45 here configured as an elastically deformable side wall protrusion 46 , the optical group 4 can be inserted into the interior 20 by a linear movement; that is to say in relation to the longitudinal opening 21 or in a direction orthogonal to the longitudinal axis L (see for example Figure 7a). To allow insertion, the two opposite first holding sections 45 can be manually bent slightly towards each other, allowing the optical group 4 to be inserted. Once in the installed position, the lateral protrusions 45 snap laterally outwards into the second retaining section 200 for mechanically cooperating with the first retaining section 45 to attach the optical group 4 to the rail profile 2 .

In an alternative mounting method option as shown in Figure 7b, the optical group 4 can be slightly tilted when attached to the rail profile 2, so that one of the two first holding sections 45 can already be inserted into the interior space 20, which The lateral protrusions 450 are located at the corresponding second retaining section 200 . The optical group 4 can then be pivoted about an axis extending parallel to the longitudinal axis L, thereby moving the other of the two first holding sections 45 into the mounting position. To allow installation, the other of the two first retaining sections 45 can be manually and elastically bent towards one of the first retaining sections 45 to allow insertion of the optical group 4 by a pivoting movement. Once in its installed position, ie fully inserted and preferably abutting the stop structure 202 , the two lateral protrusions 450 snap or are snapped into the corresponding second retaining section 200 , so that the optical group 4 is securely inserted and assembled. into track profile 2.

As is clear from the respective figures 1 and 2 , each of the light sources 3 can functionally cooperate with at least two of the attachment clips 5 . Additionally, at least one and preferably at least two of the attachment clips 5 may functionally cooperate with one optical group 4 to align it relative to the light source 3 .

The invention is not limited to the embodiments described above as long as it is covered by the appended claims. All features of the embodiments may be combined and interchanged in any desired manner.

Claims (28)

1. A longitudinal luminaire (1) extending along a longitudinal axis (L), comprising:

a longitudinal rail profile (2) defining an interior space (20), wherein the rail profile (2) comprises a longitudinal opening (21) for accessing the interior space (20),

a longitudinal light source (3) arranged in the interior space (20) and extending parallel to the longitudinal axis (L), the light source (3) comprising a longitudinal PCB (30) provided with a plurality of LEDs (31) arranged in a row,

a plurality of optical elements (40) integrally formed as an optical group (4) and arranged in rows corresponding to the LEDs (31) such that each of the optical elements (40) can be functionally positioned to at least one of the LEDs (31) when the optical group (4) is attached to the track profile (2) such that the optical elements (40) can optically influence the light emitted from the associated LED (31), and

-an attachment clip (5) comprising:

-a first attachment section (50) to be attached to a corresponding second attachment section (22) of the rail profile (2) for holding the attachment clip (5) at the rail profile (2) at least in a direction orthogonal to the longitudinal axis (L),

-a first fixing section (51) for relatively fixing the light source (3) with respect to the attachment clip (5) by a corresponding second fixing section (32) of the light source (3), and

-a first alignment section (52) for aligning the attachment clip (5) with respect to the optical group (4) by means of a corresponding second alignment section (42) of the optical group (4), such that each of the optical elements (40) is functionally positioned to an associated LED (31)

Wherein the optical group (4) comprises a first holding section (45) and the track profile (2) comprises a second holding section (200) for mechanically cooperating with the first holding section (45) for attaching the optical group (4) to the track profile (2).

2. The longitudinal luminaire (1) according to claim 1, wherein the attachment clip (5) has a U-shaped layout, wherein two opposite side arms (55) are connected by a connecting section (56) and define a receiving space (57) for longitudinally passing through the light source (3) and thereby receiving the light source.

3. The longitudinal luminaire (1) according to claim 2, wherein the connection section (56) protrudes towards the receiving space (57).

4. A longitudinal luminaire (1) according to claim 2 or 3, wherein the side arms (55) each comprise the first attachment section (50), at a distal end (54) of the side arms with respect to the connection section (56), and/or

Wherein the connecting section (56) comprises the first fastening section (51) on the side facing the receiving space (57), and/or

Wherein the connection section (56) comprises the first alignment section (52) on a side (59) opposite to the receiving space (57).

5. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the attachment of the attachment clip (5) to the rail profile (2) is obtained by a form fit and/or friction connection between the first and second attachment sections (50, 22).

6. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the first attachment section (50) comprises a clamping section and/or a locking section and/or a latching section, and

wherein the second attachment section (22) comprises a corresponding layout to obtain the attachment of the attachment clip (5) to the rail profile (2).

7. The longitudinal luminaire (1) according to claim 6, wherein the clamping section comprises a clamping spring, the locking section comprises a snap-in connection element, the latching section comprises a toothed or serrated structure, and

wherein the second attachment section (22) comprises a recess, a longitudinal groove, a corresponding snap connection element and/or a latching structure to obtain the attachment of the attachment clip (5) to the rail profile (2).

8. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the fixation of the light source (3) to the attachment clip (5) is obtained by a form fit and/or friction connection of the first and second fixation sections (51, 32).

9. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the first fixing section (51) comprises a protrusion or recess, and

wherein the second fixing section (32) comprises a corresponding layout to obtain a fixation of the light source (3) to the attachment clip (5).

10. The longitudinal luminaire (1) according to claim 9, wherein the first fixing section (51) comprises a pin-like protrusion, and

wherein the second fixing section (32) comprises a recess or through hole in the PCB (30) to obtain a fixation of the light source (3) to the attachment clip (5).

11. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the alignment of the optical group (4) with the attachment clip (5) is obtained by a form fit and/or friction connection of the first alignment section (52) and the second alignment section (42).

12. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the first alignment section (52) comprises a protrusion having at least two first surface sections (53) distant from each other along the longitudinal axis (L), wherein the second alignment section (42) comprises at least two second surface sections (43) distant from each other along the longitudinal axis (L), and wherein each of the first surface sections (53) abuts one of the second surface sections (43) respectively for aligning the optical group (4) to the attachment clip (5).

13. The longitudinal luminaire (1) according to claim 12, wherein the second surface section (43) is part of an outer rear profile of the optical group (4).

14. The longitudinal luminaire (1) according to claim 13, wherein the second surface section (43) faces a space (44) between two adjacent optical elements (40) of the optical group (4).

15. A longitudinal light fixture (1) according to any one of claims 1 to 3, wherein the track profile (2) comprises a U-shaped cross-section with two opposite side walls (23) laterally delimiting the longitudinal opening (21) and being connected by a rear wall (24) to delimit the inner space (20), when seen in the direction of the longitudinal axis (L).

16. The longitudinal luminaire (1) according to claim 15, wherein the rear wall (24) comprises the second attachment section (22) at a side (25) facing the interior space (20).

17. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the first retaining section (45) is an elastically deformable sidewall protrusion (46).

18. A longitudinal light fixture (1) according to any one of claims 1 to 3, wherein the second attachment section (22) and the second holding section (200) are made of a longitudinal profile structure of the rail profile (2).

19. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein the optical elements (40) are lenses and/or reflectors, respectively, and/or

Wherein the optical group (4) or an optical element (40) thereof covers and closes at least a portion of the longitudinal opening (21).

20. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein a plurality of the light sources (3) and/or a plurality of the optical groups (4) are provided in the rail profile (2).

21. The longitudinal luminaire (1) according to claim 20, wherein a plurality of the light sources (3) and/or a plurality of the optical groups (4) are arranged in a row parallel to the longitudinal axis (L).

22. A longitudinal luminaire (1) according to any one of claims 1 to 3, wherein each of the light sources (3) functionally cooperates with at least two of the attachment clips (5), and/or

Wherein at least one of the attachment clips (5) functionally cooperates with one optical group (4) to align it with respect to the light source (3).

23. A longitudinal light fixture (1) according to any one of claims 1 to 3, further comprising a mounting element (6) for mounting the longitudinal light fixture (1) to a mounting surface, wherein the mounting element (6) comprises a rope suspension device (60), a mounting adapter (61) and/or a longitudinal mounting profile (62).

24. The longitudinal luminaire (1) according to claim 23, wherein the mounting surface is a wall or a ceiling and the mounting adapter (61) is a mounting bracket.

25. The longitudinal luminaire (1) according to claim 23, further comprising lighting electronics (7), the lighting electronics (7) being attached to the mounting element (6).

26. The longitudinal luminaire (1) according to claim 25, wherein the lighting electronics (7) comprises a driver (70) or a sensor, the driver (70) or sensor being attached to a longitudinal mounting profile (62) of the mounting element (6).

27. A longitudinal luminaire (1) according to any one of claims 1 to 3, further comprising lighting electronics (7) attached to the rail profile (2).

28. The longitudinal luminaire (1) according to claim 27, wherein the lighting electronics (7) comprises a driver (70) or a sensor attached on the outside of a rear wall (24) of the track profile, wherein the rear wall (24) comprises the second attachment section (22) on a side (25) facing the interior space (20).