Insert device for a luminaire lighting device

Abstract

An insert device (1) for a lighting device, the insert device (1) comprising at least one side wall (21, 22) arranged along a bottom part (4) of said insert device (1) and extending from the bottom part (4) towards a top part (3) of said insert device (1), wherein the bottom part (4) is provided with an outer surface (5), and is configured to accommodate at least one light source (15) configured to, in operation, emit light away from the bottom part (4) through a light exit opening (6). The insert device (1) comprises the plurality of partition wall elements (9) arranged perpendicular the bottom part (4) of the insert device (1) along the side wall (21, 22), and configured to provide a plurality of consecutively arranged cavities (11) between the partition wall elements (9) and the side wall (21, 22) and the bottom part (4). The side wall (21, 22) delimit a respective slit (71, 72) having a slit bottom end (18) at or in the bottom part (4), and the slit (71, 72) is defined by a slit length and a slit width, and extends along the side wall (21, 22), such that the slit (71, 72) forms a holder for a reflective material sheet (81, 82).

Description

[0001] 2024PF80162

[0002] 1 10.11.2025 Insert device for a luminaire lighting device

[0003] FIELD OF THE INVENTION

[0004] The invention relates to a luminaire comprising one or more lighting devices having at least one insert device.

[0005] BACKGROUND OF THE INVENTION

[0006] Luminaires today are often provided with one or more lighting devices based on solid state lighting. The lighting devices may include an array of LEDs and an array of cups, wherein each LED is provided at the base of a cup, and wherein each cup has secular reflective side walls. Such an array of cups is typically made by means of injection molding and subsequent metallization, which are relatively costly and difficult to adapt.

[0007] The document, US 2016 / 0069533 Al, discloses a reflector assembly for a luminaire solution comprising a lighting device. The lighting device comprises a plurality of reflectors for at least one light source each. The reflectors are reflector sub-regions of a common, continuous sheet-metal part and the reflector sub-regions have wing regions bent at least partially from the sheet-metal part. A lighting device includes at least one reflector assembly, wherein at least one light source is arranged on the sheet-metal part. Slits are provided into the sheet-metal part in order to provide wing regions that can be bent from the sheet-metal part in order to form at least one reflector. This way of providing a plurality of reflectors is complicated and time consuming. The reflector assembly for a lighting device must also be changed for each production having different sizes of light source.

[0008] SUMMARY OF THE INVENTION

[0009] It is an object of the present invention to overcome these problems, and to provide an agile assembly of luminaires being quick to produce, and at the same time reduce production costs.

[0010] According to a first aspect of the invention, this and other objects are achieved by providing an insert device for a lighting device, wherein the insert device comprises at least one side wall arranged along a bottom part of the insert device and extends from the bottom part towards a top part of the insert device, wherein the bottom part is provided with2024PF80162

[0011] 2 10.11.2025 an outer surface, and the bottom part is configured to accommodate at least one light source configured to, in operation, emit light away from the bottom part through a light exit opening located opposite to the bottom part, wherein the insert device comprises a plurality of partition wall elements arranged perpendicular to the bottom part of the insert device along the side wall, wherein the plurality of partition wall elements are configured to provide a plurality of consecutively arranged cavities between the partition wall elements and the side wall and the bottom part, wherein the side wall delimits a respective slit provided with a slit having a slit bottom end at or in the bottom part, wherein the slit is defined by a slit length and a slit width, and extends along the side wall, such that the slit forms a holder for a reflective material sheet.

[0012] The luminaire may comprise one or more lighting devices, which may easily be arranged fully or partially inside the luminaire. The lighting devices may comprise one or more insert devices. The insert devices may accommodate one or more light sources. The insert device may be produced in different shapes and sizes. The insert device may easily be produced using a 3D printing technology. The production of the insert device shape and size may easily be altered due to the use of 3D printing technology.

[0013] The insert device may comprise at least one side wall arranged along a bottom part of the insert device. The side wall extends from the bottom part towards a top part of the insert device. The side wall or part of the side wall may have a plan surface. The side wall or part of the side wall may have a curved surface. The bottom part is provided with an outer surface. The bottom part’s outer surface may face away from the side wall. The bottom part is configured to accommodate the light source or light sources. The light source may be, in operation, configured to emit light away from the bottom part. The light from the light source or light sources may emit through a light exit opening located adjacent to the top part of the insert device, opposite the bottom part. The insert device comprises a plurality of partition wall elements. Each of the wall elements extends away from the bottom part towards the light exit opening. The partition wall elements may be consecutively arranged perpendicular to the bottom part of the insert device. Each of the partition wall elements may be arranged perpendicular to the side wall of the insert device. Each of the partition wall elements extends away from the bottom part towards the light exit opening. The consecutively arranged wall elements may be aligned along the side wall. The plurality of partition wall elements provides a plurality of consecutively arranged cavities between the partition wall elements, the side wall, and the bottom part. The side wall delimits a slit. The slit has a slit bottom end. The slit2024PF80162

[0014] 3 10.11.2025 bottom end may be provided in the bottom part along the side wall. The slit may be defined based on having a predetermined slit length and a predetermined slit width. The slit forms a holder for a reflective material sheet. The reflective material sheet may partially or fully rest in the slit along the side wall. The reflective material sheet may easily be arranged in the slit between the side wall and each of the plurality of partition wall elements. Each of the partition wall elements may have a light reflective surface.

[0015] In an embodiment, the insert device is elongated and comprises opposing first and second elongated side walls, extending in a same direction from opposite sides of an elongated bottom part of the insert device towards a top part of the insert device, such that the first elongated side wall, the second elongated side wall, and the elongated bottom part together delimit an elongated cavity having an axis of elongation, wherein the elongated bottom part is configured to, in operation, emit light away from the bottom part through the light exit opening located opposite to the bottom part between the first and second elongated side walls, wherein the plurality of partition wall elements is arranged perpendicular to a longitudinal direction of the elongated insert device between the first and second elongated side walls, wherein the plurality of partition wall elements are configured to provide the plurality of consecutively arranged cavities between the partition wall elements and the first and the second elongated side walls, wherein the first and second elongated side walls delimit a respective first and the second slit provided with the slit distance to each other, each having the slit bottom end in the bottom part, wherein the respective first and second slit are defined by the slit length and the slit width, and extends along a longitudinal direction between the first and second elongated side wall and perpendicular to the plurality of partition wall elements, such that the first slit forms a first holder for a first elongated reflective material sheet, and second slit forms a second holder for a second elongated reflective material sheet.

[0016] The insert device may be elongated. The insert device may comprise opposing first and second elongated side walls. The first and second elongated side walls may extend in a same direction from opposite sides of an elongated bottom part towards a top part of the insert device. The first elongated side wall, the second elongated side wall, and the elongated bottom part together may delimit an elongated cavity having an axis of elongation. The elongated cavity may be divided into a plurality of cavities. The cavity may accommodate one or more light sources fully or partially. The one or more light sources may, in operation, be configured to emit light away from the bottom part through the cavity and through the light exit opening located opposite to the bottom part. The light exit opening may be arranged2024PF80162

[0017] 4 10.11.2025 between or above the top parts of the first and second elongated side walls. The plurality of partition wall elements may be arranged perpendicular to a longitudinal direction of the elongated insert device between the first and second elongated side walls. The plurality of partition wall elements may provide a plurality of consecutively arranged cavities between plurality of the partition wall elements, the first and the second elongated side walls. The first and second elongated side walls may delimit each of the respective first and the second slits. Each of the respective slits may be provided with the slit distance to each other. Each of the respective slits may have a bottom end in the bottom part. The respective first and second slit may each be defined by a respective slit length, and a respect slit width. The slit width may be measured perpendicular to the sidewall between the side wall and the partition wall element. The slit length may be measured from a slit bottom end along the sidewall to a top of the partition wall element, a wall top. The respective first and second slit extends along a longitudinal direction of the insert device. The respective first and second slit extends between the respective first and second elongated side walls along a longitudinal direction of the insert device. The respective first and second slit extends along a longitudinal direction of the insert device perpendicular to the plurality of partition wall elements. The first slit forms a first holder for a first elongated reflective material sheet. The second slit forms a second holder for a second elongated reflective material sheet. Each of the elongated reflective material sheets may easily be arranged in the respective slits between the respective side walls and one each side of the plurality of partition wall elements.

[0018] In an embodiment the first slit and the second slit are arranged in first angled position relative to each other, such that an upper slit distance between the first slit and the second slit at the light exit opening is larger than a bottom slit distance between the first slit and the second slit at the bottom part defines a first beam angle of the light distribution.

[0019] A side wall may have a slope shape relative to cross-sectional axis of the insert device. A side wall may comprise a curved slope shape relative to cross-sectional axis of the insert device. A first beam angle of the light distribution may be determined by a variable distance between the reflective material sheets. The first side wall and the second side wall may be arranged in a first angled position relative to each other. The first slit and the second slit may be arranged in the first angled position relative to each other. The upper slit distance between the first slit and the second slit, when measuring at the light exit opening or near the light opening, may be larger than a lower slit distance between the first slit and the second slit, when measuring at the bottom part or near the bottom part, may be related to or defined as a2024PF80162

[0020] 5 10.11.2025 first beam angle of the light distribution. The first beam angle may be predetermined and dependent on the application.

[0021] In an embodiment the upper slit distance between the first slit and the second slit at the light exit opening is between 13 mm and 33 mm, and wherein the lower slit distance between the first slit and the second slit at the bottom part is between 3 mm and 5 mm.

[0022] The upper slit distance, between the first slit and the second slit, at or near the light exit opening, may be between 13 mm and 33 mm. Alternatively, between 15 mm and 30 mm. Further alternatively, between 20 mm and 25 mm. The upper slit distance may be predetermined and dependent on the luminaire application. The lower slit distance, between the first slit and the second slit at the bottom part, may be between 3 mm and 5 mm.

[0023] Alternatively, between 3 mm and 4 mm or between 4 mm and 5 mm. The upper slit distance and the lower slit distance may be predetermined based on a first beam angle of the light distribution to be used the application. The distance and cross-sectional shape may be predetermined based on the light source to be used in the application.

[0024] In an embodiment each cavity of the plurality of cavities comprises a plurality of bottom apertures and a plurality of light exit opening arranged opposite the bottom apertures, wherein the bottom aperture being configured to accommodate at least one light source, in operation, emitting light through each of the plurality of light exit openings.

[0025] Each of the cavity of the plurality of cavities may comprise a plurality of bottom apertures or openings. Each of the cavity of the plurality of cavities may comprise a plurality of light exit opening arranged opposite the bottom apertures or openings. The bottom aperture or openings may, in operation, be accommodating at least one light source. Each of the light sources may emit light through each of the plurality of light exit openings as being one common light source in a lighting device.

[0026] In an embodiment the side wall may comprise a side height, which is larger than a wall height of the wall elements.

[0027] The side wall may comprise a side height. The partition wall elements may comprise a wall height. The partition wall elements may comprise a variety of side heights. The side height of the side wall or walls may be larger than the wall height of the partition wall elements. When the side height may be higher than the wall height, the reflective material sheet may easily be arranged in the respective slits between the respective side walls and on each side of the plurality of partition wall elements. A light transparent part may be2024PF80162

[0028] 6 10.11.2025 arranged, as a light exit opening, between or on top of the top part the side walls. The light transparent part may rest on the partition wall elements if preferred.

[0029] In an embodiment the side wall has a curved shaped part above the partition wall elements at the top part of the insert device.

[0030] The side wall may be provided with a curved shaped part above the partition wall elements. The curved shaped part may extend away from the partition wall elements. The reflective material sheet may follow the side wall, such that the reflective material sheet may be provided with a curved shaped part above the partition wall elements. The reflective material sheet may extend away from the partition wall elements. The reflective material sheets, if provided, may extend away from the partition wall elements in opposite curved directions.

[0031] In an embodiment, the partition wall elements comprise a cross-sectional trapezoid shape, such that a first wall side and a second wall side of each of the partition wall elements are arranged in a second angled position relative to each other, wherein an upper wall distance between the first wall side and the second wall side at the light exit opening is shorter than a lower wall distance between the first wall side and the second wall side at the bottom part, thereby defining a second beam angle of the light distribution.

[0032] The first and second slit, which defines the shape of the partition wall elements side ends, may have a linear or a curved surface extending from the bottom part of the slit to the top part of the slit. The side walls may form the cross-sectional part of the cavity, having a shape as a trapezoid, a U-shape, or other similar shapes. The shape of the first wall side of a first partition wall element and second wall side of a second partition wall element may be the sides forming two of the sides of the cavity. The shape of the wall sides of the partition wall elements, may form a trapezoid shaped cavity, a U-shape cavity, or other similar shapes of cavities.

[0033] Each of the partition wall elements may comprise a cross-sectional trapezoid shape. Each of the partition wall elements first wall side and second wall side may be arranged in a second angled position relative to each other. An upper wall distance between the first wall side of a first partition wall element, and the second wall side of a second partition wall element at or near the light exit opening may be longer than a lower wall distance between the first wall side of the first partition wall element, and the second wall side of the second partition wall element at or near the bottom part. The upper area of the cavity near the light exit opening is larger than the lower area of the cavity near the bottom part. The2024PF80162

[0034] 7 10.11.2025 upper wall distance and the lower wall distance between the first wall side and the second wall side may define a second beam angle of the light distribution.

[0035] Alternatively, the partition wall elements may comprise a cross-sectional U-shape. The first wall side and second wall side of each of the partition wall elements are arranged in a second angled position relative to each other. The upper wall distance between the first wall side of a first partition wall element and the second wall side of a second partition wall element at the light exit opening may be longer than a lower wall distance between the first wall side of a first partition wall element and the second wall side of a second partition wall element at the bottom part, thereby defining a second beam angle of the light distribution. In an embodiment the first beam angle is different from second beam angle.

[0036] Each of the light sources may emit light through each of the plurality of light exit openings, wherein each cavity may be shaped by the first and second side wall and the first and second wall side. The first beam angle of light distribution may differ from the second beam angle of light distribution. The total light distribution from the lighting device may be predetermined by the first and the beam angle.

[0037] In an embodiment an upper surface of the side wall is provided with a cross sectional curved shape, extending from a top of the partition wall elements towards a top of the side wall.

[0038] The upper surface of the side wall is provided with a cross sectional curved shape extending from a top of the partition wall elements towards a top of the side wall. The side wall may be provided with a curve shaped part above the partition wall elements. The curved shaped part may extend away from the partition wall elements. The reflective material sheet may follow the side wall to the top of the side wall, such that the reflective material sheet may be provided with a curved shaped part above the partition wall elements. The reflective material sheet may extend away from the partition wall elements. The reflective material sheets, if provided more than one, may extend away from the partition wall elements in two different directions.

[0039] In an embodiment one or more of the following applies:

[0040] - the width of the slit is at least 0.05 mm wider than a thickness of the reflective material sheets,

[0041] - the width of the slit is 0.3 mm + / - 0.05 mm.

[0042] The width of the slit may be at least 0.05 mm wider than a thickness of the reflective material sheets, such that the reflective material sheet easily fits into the slit. If there2024PF80162

[0043] 8 10.11.2025 is a first and second slit present, the width of each of the first and second slit may be at least 0.05 mm wider than the thickness of the respective reflective material sheets. The width of the slit may be 0.3 mm + / - 0.05 mm. The reflective material sheet may preferably be less than 0.3 mm thick. If there is a first and second slit present, the width of each of the first and second slit may be 0.3 mm + / - 0.05 mm.

[0044] In an embodiment a distance between the slit bottom ends and the outer surface of the bottom part is between 0.2 mm and 1 mm.

[0045] The distance between the slit bottom ends, and the outer surface of the bottom part may be between 0.2 mm and 1 mm. A light source carrier may be arranged adjacent to the outer surface of the bottom part, such that the light source or light sources may partially or fully be arranged through the outer surface of the bottom part in a predetermined position.

[0046] In a second aspect, the invention relates to a lighting device comprising at least one housing, and at least one insert device, wherein the insert device is provided with at least one reflective material sheet, and a carrier having a first side provided with one or more light sources configured to, in operation, emit light in a lighting direction, wherein the housing is configured to receive and partially enclose the insert device, such that, in operation, the light emits from the lighting device.

[0047] The lighting device may be provided with a housing configured to accommodate at least one insert device. The insert device is provided with a reflective material sheet along a side wall of the insert device. A carrier may have a first side provided with one or more light sources configured to, in operation, emit light in a lighting direction. The carrier may be elongated. The housing may receive and partially enclose the insert device. The insert devices may be partially enclosed, such that the light exit opening is clear of the housing, such that, in operation, the light emits from the lighting device.

[0048] The partition wall elements in the insert device may be provided in different colors, such that the spectral distribution of the light emitted from the lighting device differs from the light being emitted from the light source or light sources. The partition wall elements may be provided with a predetermined reflectivity. The reflectivity of the partition wall elements may be chosen according to a specific application.

[0049] In an embodiment, a top end of the reflective material sheet is attached between the top part of the insert device and a protruding portion of the housing.

[0050] The top end of the reflective material sheet may be attached to the top part of the insert device, or the top end of the reflective material sheet may be attached to the top part2024PF80162

[0051] 9 10.11.2025 of the insert device. The top end of the reflective material sheet may be attached between the top part of the insert device and a protruding portion of the housing.

[0052] If more than one reflective material sheet, at least the top ends of the respective first and second reflective material sheets, may be attached between the top part of the insert device and a protruding portion of the housing, such that the protruding portion of the housing may press the reflective material sheets towards the top part of the insert device.

[0053] Alternatively, the top ends of the reflective material sheet may be attached to the top part of the insert device, or the top end of the reflective material sheet may be attached to the top part of the insert device.

[0054] In a third aspect, the invention relates to a linear luminaire comprising at least one lighting device, wherein the lighting device comprises at least one insert device.

[0055] The linear luminaire may comprise at least one lighting device accommodating at least one insert device. The insert device may be elongated and if more than one, the insert devices may have the same length. The insert devices may be provided with a similar first beam angle of the light distribution. The insert devices may be provided with first beam angles of the light distribution different from each other. The insert devices may have the same cross sectional trapezoid shape of the partition wall elements providing a similar second beam angle of the light distribution. The insert devices may have different cross-sectional trapezoid shape of the partition wall elements providing a second beam angles of the light distribution different from each other. The insert devices’ first and second beam angles may be predetermined to match a luminaire application.

[0056] In an embodiment, the housing comprises a first insert device configured to provide a first light distribution having a first light beam angle, and a second insert device configured to provide a second light distribution having a second light beam angle, wherein the first light beam angle of the first light distribution is different than the second light beam angle of the second light distribution.

[0057] The insert devices, if more than one, may have side walls arranged in a similar angled position relative to each other providing a similar first beam angle of the light distribution. The insert devices, if more than one, may have side walls arranged in different angled positions relative to each other providing a first beam angles of the light distribution different from each other. The insert devices, if more than one, may be provided with a similar second beam angle of the light distribution. The insert devices, if more than one, may be provided with second beam angles of the light distribution different from each other. The2024PF80162

[0058] 10 10.11.2025 insert devices first and second beam angles may be predetermined to match a luminaire application.

[0059] It is noted that the invention relates to all possible combinations of features recited in the claims.

[0060] BRIEF DESCRIPTION OF THE DRAWINGS

[0061] This and other aspects of the present invention will now be described in more detail, with reference to the appended drawings showing embodiment(s) of the invention.

[0062] Figs, la, b and c show an embodiment of a lighting device comprising an insert device having reflective material sheets.

[0063] Fig. 2 shows a cross-sectional view of an embodiment of an insert device provided with reflective material sheets.

[0064] Figs. 3a, b show beam angles of the light distribution related to an insert device and lighting devices.

[0065] As illustrated in the figures, the sizes of layers and regions are exaggerated for illustrative purposes and, thus, are provided to illustrate the general slits of embodiments of the present invention. Like reference numerals refer to like elements throughout.

[0066] DETAILED DESCRIPTION

[0067] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully convey the scope of the invention to the skilled person.

[0068] Figs, la, b and c show an embodiment of a lighting device comprising an insert device 1 having reflective material sheets 71, 72. In this embodiment, the lighting device is provided with a housing 19 accommodating an insert device 1. The insert device 1 is provided with reflective material sheets 71, 72along the side walls 21, 22of the insert device 1. An elongated carrier 17 has a first side provided with consecutively arranged light sources 21, which are arranged adjacent to the bottom part of the insert device 1, as illustrated in fig. 2.

[0069] The housing 19 is elongated and may receive and partially enclose the insert device 1 and the carrier 17 from one end of the housing 19. The insert device 1 and the carrier2024PF80162

[0070] 11 10.11.2025 17 may be partially enclosed by the housing 19, such that the light exit opening 6 is clear of the housing 19. The light sources are configured to, in operation, emit light in a lighting direction away from the carrier 17 and through the light exit opening 6.

[0071] The insert device 1 may be elongated having a longitudinal direction L. The insert device 1 may comprise opposing first and second elongated side walls 21,22. The first and second elongated side walls 21,22may extend in a same direction from opposite sides of an elongated bottom part towards a top part of the insert device 1. The first elongated side wall 21, the second elongated side wall 22, and the elongated bottom part together may delimit an elongated cavity 11 having an axis of elongation. The elongated cavity 11 may be divided into a plurality of cavities 11. The cavity 11 may accommodate light sources fully or partially. The light sources may emit light away from the bottom part through the cavity 11 and through the light exit opening 6 located opposite to the bottom part. The light exit opening may be arranged between or above the top parts of the first and second elongated side walls 21, 22. The plurality of partition wall elements 9 may be arranged perpendicular to a longitudinal direction of the elongated insert device 1 between the first and second elongated side walls 21, 22. Each of the partition wall elements 9 has a first wall side 101and a second wall side 102and a wall top 13 between the first and second wall sides 101, 102. The plurality of partition wall elements 9 may provide a plurality of consecutively arranged cavities 11 between a plurality of the partition wall elements 9, the first and the second elongated side walls 21, 22. The first and second elongated side walls 21, 22may delimit each of the respective first and the second slits 71, 72. Each of the respective slits 71, 72may be provided with the slit distance to each other. Each of the respective slits may have a bottom end in the bottom part 4. The respective first and second slit 71, 72may each be defined by a respective slit length and a respective slit width. The slit width is indicated as t in Fig. 2. The slit width is measured as the shortest distance between opposing longitudinal or major surfaces of the slit. The slit length is measured along the longitudinal extension of the slit as the distance from one longitudinal end to the opposite longitudinal end of the slit. The respective first and second slit 71, 72extends along the longitudinal direction L of the insert device 1. The respective first and second slit 71, 72extends between the respective first and second elongated side walls 21, 22along a longitudinal direction L of the insert device 1. The respective first and second slit 71, 72extends along the longitudinal direction L of the insert device 1 perpendicular to the plurality of partition wall elements 9. The first slit 71forms a first holder for a first elongated reflective material sheet 81. The second slit 72forms a second holder for a second elongated reflective2024PF80162

[0072] 12 10.11.2025 material sheet 82. Each of the elongated reflective material sheets 81, 82may easily be arranged in the respective slits 71, 72between the respective side walls 21, 22and on each side of the plurality of partition wall elements 9. The top end of the reflective material sheets 81, 82are attached between the top part 3 of the insert device 1, and if preferred between a protruding portion 20 of the housing 19 and the insert device 1.

[0073] Each of the partition wall elements 9 may comprise a cross sectional trapezoid shape, having a first wall side 101and a second wall side 102which are arranged in an angled position relative to each other defining a cross-sectional trapezoid shape of the partition wall elements 9. The first wall side 101and the second wall side 102may be arranged perpendicular to the first and second side walls 21, 22. The shape of each of the cavities may be similar to a truncated pyramid or an elongated truncated pyramid turned upside down.

[0074] Each of the cavity 11 of the plurality of cavities 11 has a bottom aperture 12 or opening to accommodate a light source arranged on the carrier 17. Each of the cavity 11 of the plurality of cavities 11 may comprise a plurality of light exit openings 6 arranged opposite the bottom apertures 12 or openings. Each of the bottom apertures 12 or openings accommodates a light source. Each of the light sources may emit light through each of the plurality of light exit openings 6 as being one common light source in a lighting device.

[0075] Fig. 2 shows a cross-sectional view of an embodiment of an insert device 1 provided with reflective material sheets 81, 82. The side walls may comprise equal side heights Hs. The partition wall elements 9 may comprise a wall height Hw. The partition wall elements may comprise a variety of wall heights FT. The side height Hsof the side walls are higher than the wall height H" of the partition wall elements 9. The reflective material sheets 81, 82are easily arranged in the respective slits 71, 72between the side walls 21, 22and on each side of the plurality of partition wall elements 9.

[0076] The side walls 21, 22top part 3 is provided with a curved shaped part above the partition wall elements 9. The curved shaped part may extend away from the partition wall elements 9. Each of the reflective material sheets 81, 82may follow adjacent to the respective side walls 21, 22. The reflective material sheets 81, 82extends away from the partition wall elements 9 in opposite curved directions away from each other.

[0077] The first slit comprising a first reflective material sheets 81and the second slit comprising a second reflective material sheet 82are arranged in a first angled position relative to each other. The upper slit distance 2xW2 between the first reflective material sheets 81and the second reflective material sheets 81at the light exit opening 6 may be larger than a bottom2024PF80162

[0078] 13 10.11.2025 slit distance 2xWl between the first reflective material sheets 81and the second reflective material sheet 82at the slit bottom end 18 at or in the bottom part 4, which may define a first beam angle of the light distribution.

[0079] An upper wall distance between a first partition wall element’s 9 first wall side and a second partition wall element’s 9 second wall side at or near the light exit opening 6 at the wall top 13 may be longer than a lower wall distance between the first wall side 101of the first partition wall element 9 and the second wall side 102of a second partition wall element 9 at or near the bottom part 4. The relationship between the upper wall distance and the lower wall distance may define a second beam angle of the light distribution.

[0080] The upper surface 14 of the side wall’s top part 3 may be provided with a cross-sectional curved shape extending from a wall top 13 of the partition wall elements 9 towards a top part 3 of the respective side wall 21, 22. The side walls 21, 22may be provided with a curved shaped part above the wall top 13 of partition wall elements 9. The curved shaped part may extend away from the partition wall elements 9. The curved shaped parts may extend away from each other in different directions and away from the partition wall elements 9. The reflective material sheet 81, 82may be arranged adjacent to the respective side wall 21, 22, and follow the side wall 21, 22from the boom part 4 to the top part 3 of the side wall 21, 22. The reflective material sheet 81, 82may be provided with a curved shaped part above the partition wall elements 9. The reflective material sheet 81, 82may extend away from the partition wall elements 9. The reflective material sheets 81, 82, if provided one on each of the partition wall elements 9, may extend away from each other in two different directions.

[0081] The width t of each of the slits 71, 72may be wider than a thickness of the reflective material sheets 81, 82, such that the reflective material sheet 81, 82easily fits into the slit 71, 72. If there is a first and second slit present, the width of each of the first and second slit 71, 72may be wider than the thickness of the respective reflective material sheets 81, 82. A light source carrier 17 may be arranged adjacent to the outer surface 5 of the bottom part 4, such that the light source or light sources 15 may partially or fully be arranged through the outer surface 5 of the bottom part 4 in a predetermined position relative to the insert device 1. Bottom apertures 12 may each accommodate a light source or part of a light source arranged on the carrier 17.

[0082] Fig. 3a, b shows beam angles of the light distribution related to an insert device or devices. Each of the light sources 15 may be accommodated fully or partially in the insert device. Light sources 15 may emit light through each of the plurality of light exit openings 62024PF80162

[0083] 14 10.11.2025 in the insert device 1. Each cavity may be shaped by the first and second side wall, which are perpendicular arranged along the first and second side walls 21, 22of the insert device 1, and the first and second wall side of the partition wall elements 9. The plurality of the cavities 11 may determine a total light distribution, wherein the total light distribution is provided by each of the cavity’s 11 light distribution. The first side wall 101and the second side wall 102may be arranged in a first angled position relative to each other. The first and second side wall 21, 22may determine a first beam angle a1of light distribution. The first and second wall side 101, 102of the partition wall elements 9 may determine a second beam angle a2of light distribution. The first beam angle a1of light distribution may be equal to or differ from the second beam angle a2of light distribution. The total light distribution P from the lighting device may be predetermined by the first and the second beam angle a1, a2.

[0084] A luminaire may comprise a first and a second lighting device 211, 212, as illustrated on fig. 3b. each of the lighting devices 211, 212may comprise a housing 19 and an insert device 1. The housing 19 is configured to receive and partially enclose the insert device 1. Each of the insert devices 1 in the lighting devices 211, 212are provided with at least one reflective material sheet 81, 82, and a carrier 17 having a first side provided with a plurality of light sources 15 arranged adjacent to the outer surface 5 of the bottom part 4 of the insert device 1, as illustrated in fig. 2. The light sources 15 in each of the lighting devices 211, 212may in operation emit light in a similar lighting direction and thereby provide a luminair light distribution, provided by each of the first and a second lighting devices 211, 212total light distribution p1, p2.

[0085] The luminaire may be an elongated luminaire comprising a first and a second elongated lighting device 211, 212accommodating an insert device 1. The first and the second elongated lighting device 211, 212may have the same length. The first and the second elongated lighting device 211, 212may emit a light having similar total light distribution p1, p2or the first and the second elongated lighting device 211, 212may emit a light having a total light distribution p1, p2different from each other. The first and the second elongated lighting device 211, 212may each emit light having a predetermine total light distribution p1, p2to match a luminaire application.

[0086] The person skilled in the art realizes that the present invention by no means is limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.2024PF80162

[0087] 15 10.11.2025 Additionally, variations to the disclosed embodiments can be understood and effected by the skilled person in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Claims

2024PF8016210.11.2025 CLAIMS1. A lighting device comprising at least one housing (19), and at least one insert device (1), wherein the insert device (1) comprises at least one side wall (21, 22) arranged along a bottom part (4) of the insert device (1) and extending from the bottom part (4) towards a top part (3) of the insert device (1),wherein the bottom part (4) is provided with an outer surface (5), and the bottom part (4) is configured to accommodate at least one light source (15) configured to, in operation, emit light away from the bottom part (4) through a light exit opening (6) located opposite to the bottom part (4),wherein the insert device (1) comprises a plurality of partition wall elements (9) arranged perpendicular the bottom part (4) of the insert device (1) along the at least one side wall (21, 22), wherein the plurality of partition wall elements (9) are configured to provide a plurality of consecutively arranged cavities (11) between the partition wall elements (9) and the at least one side wall (21, 22) and the bottom part (4),wherein the at least one side wall (21, 22) delimit a respective slit (71, 72) having a slit bottom end (18) at or in the bottom part (4), wherein the slit (71, 72) is defined by a slit length and a slit width, and extends along the at least one side wall (21, 22), such that the slit (71, 72) forms a holder for a reflective material sheet (81, 82),wherein the insert device (1) is provided with at least one reflective material sheet (81, 82), and a carrier (18) having a first side provided with one or more light sources (15) configured to, in operation, emit light in a lighting direction, andwherein the housing (19) is configured to receive and partially enclose the insert device (1), such that, in operation, the light emits from the lighting device.

2. The lighting device according to claim 1, wherein the insert device (1) is elongated and comprises opposing first and second elongated side walls (21, 22) extending in a same direction from opposite sides of the elongated bottom part (4) of the insert device (1) towards a top part (3) of the insert device (1), such that the first elongated side wall (21), the second elongated side wall (22), and the elongated bottom part (4) together delimit an elongated cavity having an axis of elongation,2024PF8016217 10.11.2025 wherein the one or more light sources (15) are configured to, in operation, emit light away from the bottom part (4) through the light exit opening (6) located opposite to the bottom part (4) between the first and second elongated side walls (21, 22),wherein the plurality of partition wall elements (9) is arranged perpendicular to a longitudinal direction of the elongated insert device (1) between the first and second elongated side walls (21, 22), wherein the plurality of partition wall elements (9) are configured to provide the plurality of consecutively arranged cavities (11) between the partition wall elements (9) and the first and the second elongated side walls (21, 22),wherein the first and second elongated side walls (21, 22) delimit a respective first and second slit (71, 72) provided with a slit distance to each other, each having the slit bottom end (18) at or in the bottom part (4), wherein the respective first and second slit (71, 72) are defined by the slit length and the slit width, and extends along a longitudinal direction (L) between the first and second elongated side wall (21, 22) and perpendicular to the plurality of partition wall elements (9), such that the first slit (71) forms a first holder for a first elongated reflective material sheet (81), and the second slit (72) forms a second holder for a second elongated reflective material sheet (82).

3. The lighting device according to claim 2, wherein the first slit and the second slit (71, 72) are arranged in a first angled position relative to each other, such that an upper slit distance between the first slit and the second slit at the light exit opening (6) is larger than a lower slit distance between the first slit and the second slit (71, 72) at the bottom part (4) defines a first beam angle of the light distribution.

4. The lighting device according to claim 3, wherein the upper slit distance between the first slit and the second slit (71, 72) at the light exit opening (6) is between 13 mm and 33 mm, and wherein the lower slit distance between the first slit (71) and the second slit (72) at the bottom part (4) is between 3 mm and 5 mm.

5. The lighting device according to any of the preceding claims,, wherein each cavity (11) of the plurality of cavities (11) comprises a plurality of bottom apertures (12) and a plurality of light exit openings (6) arranged opposite the bottom apertures (12), wherein the bottom aperture (12) is configured to accommodate at least one light source (15), in operation, emitting light through each of the plurality of light exit openings (6).2024PF8016218 10.11.20256. The lighting device according to any of the preceding claims, wherein one or more of the following applies:the at least one side wall (21,22) comprises a side height, which is larger than a wall height of the partition wall elements (9), andthe side wall (21, 22) has a curved shaped part above the partition wall elements (9) at the top part of the insert device (1).

7. The lighting device according to any of the preceding claims, wherein the partition wall elements (9) comprise a cross sectional trapezoid shape, such that a first wall side (101) and a second wall side (102) of each of the partition wall elements (9) are arranged in a second angled position relative to each other, wherein a upper wall distance between the first wall side (101) and the second wall side (102) at the light exit opening (6) is shorter than a lower wall distance between the first wall side (101) and the second wall side (102) at the bottom part (4), thereby defining a second beam angle of the light distribution.

8. The lighting device according to claim 7, wherein the first beam angle is different from second beam angle.

9. The lighting device according to any of the preceding claims, wherein an upper surface (14) of the respective side wall (21, 22) is provided with a cross sectional curved shape extending from a top of the partition wall elements (9) towards a top of the side wall (21, 22).

10. The lighting device according to any of the preceding claims, wherein one or more of the following applies:- the width (t) of the slit (71, 72) is at least 0.05 mm wider than a thickness of the reflective material sheets (81, 82),- the width (t) of the slit (71, 72) is 0.3 mm + / - 0.05 mm.

11. The lighting device according to any of the preceding claims, wherein a distance (d) between the slit bottom ends (18), and the outer surface (5) of the bottom part (4) is between 0.2 mm and 1 mm.2024PF8016219 10.11.2025 12. The lighting device according to any one of the preceding claims, wherein a top end of the reflective material sheet (81, 82) is attached between the top part of the insert device (1) and a protruding portion of the housing (19).

13. A linear luminaire comprising at least one lighting device according to any one of claims 1 to 12.

14. The linear luminaire according to claim 13, wherein the housing (19) comprises a first insert device (I1) configured to provide a first light distribution having a first light beam angle , and a second insert device (I2) configured to provide a second light distribution having a second light beam angle , wherein the first light beam angle of the first light distribution is different than the second light beam angle of the second light distribution.

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