Luminaire Assembly with Reduced Light Pollution

Abstract

Example embodiments relate to luminaire assemblies with reduced light pollution. One embodiment includes a luminaire assembly that includes a light source. The luminaire assembly also includes a support for carrying the light source. Additionally, the luminaire assembly includes a protector for protecting the light source from external environmental influences. The protector has an open top for accommodating the support, a bottom facing the light source, and a peripheral wall between the open top and the bottom. The peripheral wall includes a transparent or translucent portion. The light source is configured to send light in use through the portion of the peripheral wall. The protector is provided with a light absorbing surface arranged inside of the protector and facing the light source. The light absorbing surface is configured such that in use part of the light emitted from the light source is absorbed by the light absorbing surface.

Claims

1. A luminaire assembly comprising: a light source; a support for carrying the light source; and a protector for protecting the light source from external environmental influences, the protector having an open top for accommodating the support, a bottom facing the light source, and a peripheral wall between the open top and the bottom, the peripheral wall comprising a transparent or translucent portion, and the light source being configured to send light in use through said portion of the peripheral wall, wherein the protector is provided with a light absorbing surface arranged inside of the protector and facing the light source, the light absorbing surface being configured such that in use part of the light emitted from the light source is absorbed by the light absorbing surface to reduce upward light pollution.

2. The luminaire assembly according to claim 1, wherein the light absorbing surface is configured to absorb more than 80% of visible light that is emitted on the surface thereof, preferably more than 95%, wherein optionally the light absorbing surface is a surface of a black layer.

3. (canceled)

4. The luminaire assembly according to claim 1, wherein the light absorbing surface is part of a separate element located in an inner area delimited by the peripheral wall of the protector.

5. The luminaire assembly according to claim 1, wherein the light absorbing surface extends over at least 90% of a surface of a section through the peripheral wall of the protector.

6. The luminaire assembly according to claim 1, wherein the light absorbing surface is in a lower half of the protector and/or wherein the light absorbing surface is on or near the bottom.

7. (canceled)

8. The luminaire assembly according to claim 1, further comprising a second light source and a second support with the second light source arranged on a lower surface thereof, said second support being arranged between the bottom and the support, wherein the light absorbing surface is arranged above the second support, preferably a second light absorbing surface is arranged inside the protector and facing the second light source.

9. The luminaire assembly according to claim 1, wherein the light absorbing surface is mounted tight inside the inner area delimited by the peripheral wall of the protector.

10. The luminaire assembly according to claim 1, wherein the protector is made of plastic and the light absorbing surface is made of metal or plastic, and/or wherein the rigidity of the material of the light absorbing surface is higher than the rigidity of the material of the protector.

11. (canceled)

12. The luminaire assembly according to claim 1, wherein the light absorbing surface is adhered to a surface located in an inner area delimited by the peripheral wall of the protector.

13. The luminaire assembly according to claim 1, wherein the bottom of the protector is substantially flat, and/or wherein the bottom of the protector is closed or wherein the bottom of the protector has apertures for electrical or mechanical connections.

14. (canceled)

15. (canceled)

16. The luminaire assembly according to claim 1, wherein the light absorbing surface is provided with a collar extending adjacent the peripheral wall of the protector, and/or wherein a surface area delimited by the open top of the protector is larger than a surface area of the bottom of the protector, preferably at least 10% larger, more preferably at least 50% larger.

17. (canceled)

18. The luminaire assembly according to claim 1, wherein the peripheral wall has one of a conical shape and a cylindrical shape, and/or wherein the light absorbing surface is part of a light absorbing coating located in an inner area delimited by the peripheral wall of the protector, and/or wherein the light absorbing surface is a surface of the protector.

19. (canceled)

20. (canceled)

21. (canceled)

22. The luminaire assembly according to claim 1, wherein a height of the peripheral wall of the protector is at least 25 cm, preferably at least 30 cm, more preferably at least 40 cm, and/or wherein the light source is configured to send light in use through the peripheral wall downwards towards ground, and the protector is configured such that in use part of the light from the light source is absorbed at the bottom of the protector to reduce light reflected upwards, and/or wherein the light sources comprises at least 4 LEDs. preferably at least 8 LEDs, more preferably at least 16 LEDs. and/or wherein the luminaire assembly further comprises an upper cover for closing the open top of the protector, wherein preferably the dimensions of the cover are bigger than the ones of the open top, and/or wherein the luminaire assembly further comprises a diffuser for diffusing the light from the light source, the diffuser being interposed between the light source and the light absorbing surface.

23. (canceled)

24. (canceled)

25. (canceled)

26. (canceled)

27. (canceled)

28. The luminaire assembly according to claim 1, comprising at least two brackets extending between the support and the bottom, preferably along an outer surface of the peripheral wall and preferably arranged for carrying the protector, wherein preferably the bottom of the protector is provided with at least two recesses for housing a portion of the at least two brackets, wherein preferably the light absorbing surface is shaped with at least two recesses corresponding with the at least two recesses of the bottom, and/or wherein the luminaire assembly comprises at least one hollow rod extending inside the protector between the support and the bottom, wherein preferably the light absorbing surface is shaped with at least a recess for the at least one hollow rod.

29. (canceled)

30. (canceled)

31. (canceled)

32. The luminaire assembly according to claim 1, wherein a light absorbing circumferential wall, such as a cylindrical light absorbing ring, is provided in the protector, around the light source, wherein preferably the light absorbing circumferential wall is configured to absorb light emitted at large incident angles above a predetermined value, wherein said predetermined value is preferably between 70° and 95°, wherein the light absorbing circumferential wall is preferably arranged adjacent the peripheral wall of the protector.

33. A lamp post comprising a luminaire assembly according to claim 28, further comprising a support pole arranged below the protector, wherein the at least two brackets have a lower end connected to the support pole, optionally via connecting means.

34. A modular lamp post comprising a plurality of pole modules arranged one above the other along a central axis, wherein said plurality of pole modules comprise a light module comprising a luminaire assembly according to claim 1.

35. The modular lamp post according to claim 34, said light module comprising: a housing comprising a lower section, a middle section, and an upper section, wherein the middle section comprises the protector. wherein the support carrying the light source is arranged in an upper part of the housing, near said upper section; wherein the lower section comprises a connection interface configured to connect the light pole module to a lower pole module of said plurality of pole modules, wherein optionally the middle section is a transparent or translucent section.

36. (canceled)

37. The modular lamp post according to claim 35, further comprising a second support carrying a second light source, said second support being arranged at a distance of the support, in a middle part of the housing between the upper and lower section, wherein preferably the light absorbing surface is provided in said housing, on or near the second support facing the first light source, wherein optionally a second light absorbing surface is provided in said housing on or near the lower section facing the second light source.

38. The modular lamp post according to claim 34, further comprising at least two rods connecting the lower section to the upper section, wherein the at least two rods preferably have a black outer surface, wherein optionally the second support is fixed to the at least two rods, and/or wherein a cylindrical light absorbing ring is provided in the protector, around the light source and/or around the second light source, wherein the ring is preferably arranged adjacent the peripheral wall of the protector.

39. (canceled)

40. (canceled)

41. (canceled)

42. (canceled)

Description

BRIEF DESCRIPTION OF THE FIGURES

[0092] This and other aspects of the present invention will now be described in more detail, with reference to the appended drawings showing currently preferred embodiments of the invention. Like numbers refer to like features throughout the drawings.

[0093] FIG. 1 illustrates a see-through perspective side view of an exemplary embodiment of a complete luminaire head assembly in a post-top configuration.

[0094] FIG. 2 illustrates an exploded and partially schematic view of the embodiment of FIG. 1.

[0095] FIG. 3 illustrates a schematic view of a protector according to the embodiment of FIG. 1.

[0096] FIG. 4 illustrates a perspective front view with a schematic representation of different light beams for a protector according to the embodiment of FIG. 2.

[0097] FIG. 5 illustrates a perspective bottom view of the protector according to another embodiment.

[0098] FIG. 6 illustrates an enlarged perspective bottom view of the protector according to the embodiment of FIG. 5 with two different heights of collars.

[0099] FIG. 7A illustrates schematically an exploded perspective view of a top portion of another embodiment of a luminaire assembly;

[0100] FIG. 7B illustrates schematically a top view of the cap of the luminaire assembly of FIG. 7A;

[0101] FIG. 7C illustrates schematically a section of the luminaire assembly of FIG. 7A, taken along line 7C-7C in FIG. 7B;

[0102] FIG. 8 illustrates schematically a section of an embodiment of a light pole module.

[0103] FIG. 9 illustrates a perspective view of an embodiment of a light pole module with two light sources.

[0104] FIG. 10 illustrates an exploded view of a portion of FIG. 9.

DESCRIPTION OF EMBODIMENTS

[0105] The luminaire head assembly of FIG. 1 may be included in a luminaire comprising said luminaire assembly 1 and a luminaire pole. The luminaire assembly may be connected to the luminaire pole in any manner known to the skilled person. Typical examples are street lights. In other embodiments, the luminaire head assembly 1 may be connected to a wall or a surface, e.g. for illuminating buildings.

[0106] FIGS. 1 to 3 illustrate an embodiment of a complete luminaire head assembly in a post-top configuration, where a luminaire head assembly is installed on a luminaire pole.

[0107] The luminaire assembly 1 comprises a light source 100. The light source 100 comprises a plurality of LEDs. Optionally, one or more optical elements, such as lenses and/or reflectors, may be arranged over the plurality of LEDs. The optical elements may be integrated in a plate comprising a plurality of optical elements, e.g. a lens plate. Typically, the light source comprises at least 4 LEDs, at least 8 LEDs, preferably at least 16 LEDs.

[0108] The luminaire assembly further comprises a support 200 for carrying the light source 100. The support 200 comprises one or more PCB's 210 and the LEDs 110 are arranged on a lower side of the one or more PCB's 210. Optionally the support 200 may further comprise a heat sink (not illustrated).

[0109] The luminaire assembly further comprises a protector 300 serving as cover for the light source 100 against external influences like dirt and rain. The protector 300 is protruding away from the light sources and has an open top 310 for accommodating the light source 100 carried on the support 200, a closed bottom 320, and a peripheral wall 330, see FIG. 3. The peripheral wall 330 comprises a transparent or translucent portion letting the light of the light source through and the light source 100 is configured to send light in use through said portion of the peripheral wall 330. Preferably, the protector has an axial direction extending in a direction of the pole, and the protector has a height H measured along the axial direction A.

[0110] As is best visible in FIG. 3, the protector 300 has a peripheral wall having a substantially conical shape with the open top 310 of the protector being larger than a surface area of the closed bottom 320 of the protector, preferably at least 10% larger, more preferably at least 50% larger. The height H of the peripheral wall 330 of the protector 300 is at least 25 cm, preferably at least 30 cm, more preferably at least 40 cm. Typically, the top diameter D1 is between 20 cm and 40 cm, the bottom diameter D2 is between 10 cm and 30 cm and the height H of the protector is between 40 cm and 70 cm.

[0111] It is noted that the taper angle of the protector has an influence on the amount of light reflected towards the bottom 320 such that a substantially conical protector represents the situation where the invention is especially advantageous. Alternatively the shape of the protector may be substantially of a cylindrical shape, a stepped shape, a conical shape or a combination thereof.

[0112] Preferably, the peripheral wall 330 and the closed bottom 320 are formed as one integral protector casing, e.g. a transparent or translucent plastic casing.

[0113] Preferably the protector may be releasably attached to the support 200 and/or to further connection parts by means of any one or more of the following elements: screws, locks, clamps, clips.

[0114] The configuration illustrated in FIGS. 1, 2 and 3 corresponds to a post-top configuration arrangement, where a luminaire head is mounted on top of a pole. In that configuration, the luminaire assembly may further comprise brackets 410 and 420 extending between the support 200 and the closed bottom 320 end, along an outer surface of the peripheral wall 330. The brackets 410 and 420 may be arranged for carrying the protector and may be located symmetrically with respect to the axial direction of the protector. The two brackets 410, 420 may have a lower end connected to the support pole P via intermediate connecting means 500, serving as a supporting base.

[0115] Alternatively the luminaire head may be arranged in side-entry configuration where a support pole is arranged adjacent the protector 300 and the support 200 or the upper cover 600 is connected to the support pole via a side arm. For example, a side arm or bracket may connect the upper cover 600 to a support pole. Alternatively, the bottom of the protector 300 may be connected with a side arm or bracket to the support pole.

[0116] The luminaire assembly of FIG. 1 shows further an upper cover 600 in open position. When in closed position, the cover 600 protects the upper side of the support 200 against external influences like rain and dirt. The cover 600 operates also as a hat absorbing upward light coming from the light source and reflected by the protector 300. The cover 600 may be provided with an outwardly protruding portion as illustrated in FIG. 1 and is releasably attached to the support 200 and/or to further connection parts. Preferably the dimensions of the cover 600 are bigger than the ones of the open top 310 to protect further against upwards light pollution.

[0117] In FIG. 2 an exploded schematic view of the luminaire assembly of FIG. 1 is shown. As illustrated the protector has an open top 310 and a closed bottom 320 facing the light source 100. A support 200 is provided to carry the light source. A peripheral wall 330 extends between the open top 310 and the closed bottom 320. A light absorbing surface 340 is located inside the protector 300 and at the bottom 320 of the protector and configured such that in use part of the light from the light source 100 is absorbed by the light absorbing surface 340 to reduce light pollution. The light absorbing surface 340 is part of a separate element introduced inside the protector 300 from the open top 310 and prior to the mounting of the support 200 at the open top of the protector 300. The separate element 340 may be positioned against or at a small distance of the inner surface of the bottom 320 of the protector 300.

[0118] Typically the light source 100 is configured to send light in use through the peripheral wall 330 downwards towards the ground, e.g. a street or a pavement, and the light absorbing surface 340 is configured such that in use part of the light from the light source 100 is absorbed at the bottom 320 of the protector to reduce light reflected upwards.

[0119] The light absorbing element has a light absorbing surface 340 facing the light source and is made of a material configured to absorb more than 80% of visible light that is emitted on the surface thereof, preferably more than 95%. Typically the light absorbing element comprises a black layer, preferably a matt black layer. Alternatively other colours with suitable light absorbing properties may be used as long as more than 80% of the light beams reaching the light absorbing surface are absorbed.

[0120] FIG. 3 illustrates a schematic view of a protector according to an embodiment of the present invention. As illustrated in FIG. 3, the light absorbing surface 340 is part of a separate element located in an inner area delimited by the peripheral wall 330 of the protector 300 on or near the closed bottom 320. Preferably the light absorbing surface 340 is located at less than 5% of the height of the protector from the bottom 320, more preferably directly on the bottom. Typically the separate light absorbing surface is directly in contact with the inner bottom surface of the bottom 320. Alternatively the separate light absorbing element may be located at a distance from the bottom 320, using for instance legs and/or anchoring means on the peripheral wall. The light absorbing surface 340 of the light absorbing element is located inside the protector such that light beams coming directly or indirectly from the light source are absorbed and are not reflected on a lower surface of the protector.

[0121] The bottom 320 of the protector illustrated in FIG. 3 is flat with a substantially disk shape. This configuration represents a situation where the invention is especially advantageous. Indeed second order reflections are particularly creating upward light emissions in case of profound protectors with a flat bottom facing the source. Alternatively the bottom surface can have a curved shape or a free-form shape which would create second order reflections of light upwards if no light absorbing surface were to be present.

[0122] The light absorbing surface 340 as illustrated in FIG. 3 extends over the whole inside flat bottom 320 of the protector. Alternatively the light absorbing surface 340 may extends over at least 90% of an inside bottom surface of the protector, in particular to cover a portion of the bottom surface where upwards reflections occur the most, for instance an outer ring of the inner bottom surface of the bottom 320.

[0123] The light absorbing element comprising the light absorbing surface may be mounted tight inside the protector bottom or adhered to it by glue or any other known means. In the case of a plastic protector, a light absorbing element made of metal or plastic may be used in combination with a tight mechanical mounting. Preferably the rigidity of the material of the light absorbing element is higher than the one of the protector. More generally other materials for the protector and the light absorbing element may be chosen taking into account the difference in rigidity between them providing benefits for a tight mounting.

[0124] As illustrated the bottom of the protector 320 is provided with at least two recesses 321, 322 for housing a portion of the at least two brackets 410, 420 and the separate element forming the light absorbing surface 340 is shaped with at least two recesses 341,342 corresponding with the at least two recesses 321, 322 of the bottom 320. In the illustrated embodiment, the recesses 321, 322 are “double bulged”, but this is merely an example. Other shapes of recesses for mounting purposes may be considered, and more generally the shape of the light absorbing surface may be adapted to the shape of the protector in which it is fitted in, such that a tight fit is realised.

[0125] In addition, although represented here as having a closed bottom, other luminaires according to the invention may have a protector with an open bottom, or with a bottom comprising apertures for electrical and/or electronic and/or mechanical connections. The apertures may be provided for wires.

[0126] Some luminaires may by construction comprise at least one hollow rod extending inside the protector between the support and the bottom. In that case preferably the light absorbing surface is shaped with at least a recess for the at least one hollow rod .The hollow rods may serve as guide for electrical and/or electronic and/or mechanical connections going through the protector towards the light source or its support. Additionally, the light absorbing surface may preferably be located at a distance from the bottom of the protector, by resting on legs or by anchoring on the peripheral wall to cover the connections and avoid light reflections in all directions due to the incidence of the light on the electrical and/or electronic and/or mechanical connections.

[0127] Optionally, a light absorbing circumferential wall (not shown) may be provided around the light source and extending downward from the support 200, in order to absorb a portion of the light emitted at large incident angles. The light absorbing circumferential wall may extend over a small distance into the protector 300. The light absorbing circumferential wall may be provided around the one or more PCB's 210. For example, the one or more PCB's 210 may be arranged on a mounting plate, preferably a light absorbing mounting plate, and the light absorbing circumferential wall may protrude downward around the one or more PCB's 210 to absorb a portion of the light emitted at large incident angles. The one or more PCB's 210 may have any shape. For example one rectangular or polygonal PCB 210 may be provided. In a particular example the PCB 210 may have the shape of a house (combination of a rectangle and a trapezoid), and the light absorbing circumferential wall may then also have the shape of a house.

[0128] FIG. 4 illustrates a perspective front view with a schematic representation of different light beams in a protector according to an embodiment. As illustrated in FIG. 4, a first beam B1 of light with a high incidence angle on the peripheral wall is refracted to the exterior of the protector. A second beam of light B2 with a low incidence angle on the peripheral wall is reflected by the wall towards the bottom surface of the protector and absorbed by the light absorbing surface 340. Without the light absorbing surface 340, a reflection on the bottom surface of the protector would create a second order upward light emission inside the protector 300 represented by a crossed hatched arrow, which could further travel upward and out of the protector after refraction on the protector. Multiple reflections on the wall prior to reaching the bottom surface may also occur.

[0129] For incidence angles greater than the taper angle of the cone, it has been identified that beams are not reflected upwards. On the contrary for incidence angles smaller than the taper angle of the cone, the light absorbing surface plays an important role and allows reducing significantly second and higher order reflections and more generally upward light pollution. In particular for street lighting any light emitted above the horizontal plane of the support 200 is subjected to strict regulations and norms. Preferably the proportion of light emitted upwards versus light emitted downwards should be less than 1%.

[0130] FIG. 5 illustrates a perspective bottom view of the protector according to another embodiment. According to a second embodiment, the light absorbing surface 340 facing the light source and inside the protector is provided with a peripheral collar 345 extending adjacent the peripheral wall 330 of the protector 300. The collar 345 enables absorbing further possible upward reflections at the bottom of the protector. The light absorbing surface 340 is located on the inside of the protector and may be a separate element with substantially the shape of a plate resting on the inside bottom surface of the protector. The collar 345 may be an integral part of the separate light absorbing element. Alternatively, the plate-like absorbing surface may be fixed at a certain distance above the bottom surface, by resting on legs or by anchoring on the peripheral wall.

[0131] FIG. 6 illustrates an enlarged perspective bottom view of the protector according to the second embodiment with two different heights of collars. The light absorbing element 340a inside the protector has a collar 345a with a smaller height than another absorbing element 340b having a collar 345b with a higher height. The light absorbing element 340b absorbs more light than the light absorbing element 340a. In this manner, not only the reflections on the bottom surface but also upwards reflections on the lower part of the peripheral wall can be absorbed. The height of the collar can be determined based on trade-off considerations between the amount of upwards light absorbed and the amount of downwards light transmitted. Preferably the height of the collar is less than 10% of the height of the protector, more preferably less than 5% of the height of the protector, more preferably less than 1% of the height of the protector. Typically the height of the collar is less than 5 cm, more preferably less than 1 cm or 2 cm.

[0132] FIGS. 7A-7C illustrate another luminaire assembly according to the invention. The luminaire assembly of FIGS. 7A-7C comprises a base module 500, an at least partially transparent or translucent protector casing 300 of an essentially cylindrical shape, an electronic gear unit 700, a removable top cover 600, a support 200 for carrying the light source 100 comprising a plurality of light sources, and optionally a diffuser 120 for diffusing the light emitted by the light source 100, the diffuser being located in the vicinity of the light source 100 inside the protector 300. This type of luminaire assembly is disclosed in more details in EP 19 160 588.0 which is incorporated hereby by reference. The base module 500 is fixed to the support pole P, e.g. using a plurality of screws. The protector casing 300 has an open top and an open bottom, and extends upwardly from the base module 500 to the top cover 600. The protector casing 300 and the base module 500 are designed such that the electronic gear unit 700 is removable from the base module 500 through the protector casing 300. The cover 600 closes the open top 310 of the protector casing 300.

[0133] The electronic gear unit 700 is arranged in or on the base module 500 and comprises one or more electronic components, such as a LED driver, a controller, a surge protection device such as a varistor, a connector for wiring , a dimmer (not shown), etc. Typically at least the LED driver will be present in the electronic gear unit 700. The other components are optional and depend on the desired functionalities of the luminaire It is noted that this is merely an example of a number of electronic components that may be arranged in the electronic gear unit 700. In other embodiments more or less electronic components may be present, and the components may be different depending on the desired functionalities.

[0134] The support 200 with the plurality of light sources 110 is arranged to emit light through the protector casing 300 and is connected to one or more electronic components of the electronic gear unit 700. The electronic gear unit 700 comprises a frame having a bottom, two uprights and an upper cover with a surface 710. The bottom of the frame carries the electronic and other components.

[0135] The absorbing surface 340 may be provided on top of the electronic gear unit 700, above the upper cover surface 710 as a separate element or integrated into the upper cover surface 710 itself, such that part of the light from the light sources 110 directed to the electronic gear unit 700 is absorbed and not reflected upwards. Where possible, this embodiment may be combined with previous embodiments.

[0136] FIGS. 8, 9 and 10 illustrate embodiments of a light pole module for use in a modular lamp post. WO2019/092273A1, which is incorporated herewith by reference, discloses an example of a modular lamp post in which the light pole module of FIGS. 8, 9 and 10 may be used. FIG. 8 illustrates a light module 800 comprising a first light source 100, a first support 200 for carrying the first light source 100, a protector 300 for protecting the first light source 100 from external environmental influences. The protector 300 has an open top 310 for accommodating the first support 200, an open bottom 320 facing the first light source 100 and a peripheral wall or middle section 330 between the open top 310 and the open bottom 320. The peripheral wall 330 comprises a transparent or translucent section, and the first light source 100 is configured to send light in use through a portion of the peripheral wall 330. In the illustrated embodiment, the peripheral wall 330 forms the protector which is made of a transparent or translucent material. The protector 300 is provided with a first light absorbing surface 340 arranged inside of the protector and facing the first light source 100. The light absorbing surface 340 is configured such that in use part of the light from the first light source 100 is absorbed by the first light absorbing surface 340 to reduce upward light pollution. In FIG. 8, the first light absorbing surface 340 is arranged in a middle part of the protector 300.

[0137] The light pole module of FIGS. 8, 9 and 10 may be part of a modular lamp post comprising a plurality of pole modules arranged one above the other along a central axis. The light pole module comprises a housing comprising a lower section 500, a middle section 330 and an upper section 600, wherein the middle section 330 constitutes the protector 300. The first support 100 carrying the first light source 200 is arranged in an upper part of the housing, near or against said upper section 600. A second support 200′ carrying a second light source 100′ is arranged at a distance of the first support 200 in a middle part of the housing between the upper and lower section 600, 500. It is noted that in other non-illustrated embodiments the second support 200′ may be omitted.

[0138] The lower section 500 comprises a connection interface configured to connect the light pole module to a lower pole module of said plurality of pole modules and may extend partially inside the protector 300. The middle section 300 is a transparent or translucent cylindrical section. Similarly, the upper section 600 may comprise a connection interface configured to connect the light pole module to a higher pole module of said plurality of pole modules and may extend partially inside the protector 300. Alternatively, the upper section 600 may comprise a top cover to close the light pole module (if no other module is added on top of it).

[0139] As illustrated in FIGS. 9 and 10, at least two rods 701 and 702 may be present in the inner area delimited by the protector 300. The rods 701, 702 may be arranged adjacent the middle section 330, and may be arranged diametrically opposite to each other, parallel to the vertical axis. If more than two rods are present, they may be distributed evenly around the perimeter of the middle section. These rods 701 and 702 may be hollow and are for connecting the lower section 500 to the upper section 600 and/or for hosting or guiding a connection line, e.g. a supply line for feeding the light source. The connection line may comprise an electrical and/or electronic and/or optical connector. The rods may have openings in their middle part to enable wiring the connection line to the second light source 100′. The rods 701 and 702 may have a black outer surface to further contribute to reducing light pollution. The first and/or the second support 200 and 200′ may be fixed to the at least two rods 701 and 702. In particular the second support 200′ may comprise apertures 201′, 202′ such that the rods 701 and 702 may be inserted in said apertures 201′ and 202′ and such that the second support 200′ may be slid along the rods 701 and 702 and fixed into place to the rods 701 and 702 using appropriate connecting means, like for example screws. The first support 200 may be fixed to the at least two rods 701 and 702 in a similar manner

[0140] The light module may further comprise for the first and/or second light source 100, 100′ inside the protector 300 and in the vicinity of the respective light source 100, 100′, one or more optical elements, such as a diffuser 120, 120′ for diffusing the light emitted by the respective light source 100, 100′, and/or so-called Louver elements 130, 130′ and/or backlight elements for directing the light. The diffuser 120, 120′may have recesses for housing the rods 701 and 702, such that the diffuser 120, 120′ may be slid into place. Louver elements may comprise a light shielding structure configured for cutting off or reflecting light rays having a large incident angle, thereby reducing the light intensities at large angles and improving the G/G* classification of the light module. Examples of louver elements are disclosed in PCT patent applications PCT/EP2020/066221 and PCT/EP2019/074894 and Dutch application N2025168 in the name of the applicant, which are included herein by reference. Further, a spacer layer may be disposed between the carrier and the one or more optical elements. The spacer layer is provided with one or more holes through which one or more light emitting element of the light source extend. Examples of spacer layers are disclosed in Dutch patent application N2025166 in the name of the applicant, which is included herein by reference.

[0141] The first light absorbing surface 340 may be provided in said housing, on or near the second support 200′ facing the first light source 100. The first light absorbing surface 340 is provided on top of the second support 200′, such that part of the light from the first light source 100 carried by the first support 200 and directed to the top surface of the second support 200′ is absorbed and not reflected upwards. The upper half of the protector 300 defines the inner area where the light absorbing surface 340 serves the purpose of reducing upward light pollution. Light beams from the first light source 100 directly or indirectly reaching said first light absorbing surface 340 will be substantially absorbed reducing or avoiding upward reflection.

[0142] A second light absorbing surface 340′ may be provided in said housing on or near the lower section 500 facing the second light source 100′. The lower half of the protector 300 defines the inner area where the second light absorbing surface 340′ serves the purpose of reducing upward light pollution. Light beams from the second light source 100′ directly or indirectly reaching the second light absorbing surface 340′ will be substantially absorbed reducing or avoiding upward reflection.

[0143] It is noted that in other non-illustrated embodiments, the second light source 100′, the second support 200′ and the second light absorbing surface 340′ may be omitted, and the first light absorbing surface 340 may then be arranged on or near the lower section 500.

[0144] Additionally, a light absorbing circumferential wall shaped as a cylindrical light absorbing ring 350 and/or 350′ may be provided in said housing, around the first light source 100 and/or around the second light source 100′. In other embodiments, the light absorbing circumferential wall may have a different shape, e.g. a prism shape. The further absorbing surfaces 350 and/or 350′ are in the shape of cylindrical rings and may be used around the first and/or second light source 100 and/or 100′ to absorb lateral light emissions. The first and second supports 200 and 200′ may not cover the complete section of the protector 300 leaving a small gap between the support 200, 200′ and the protector 300 such that light may travel from the lower half of the protector 300 towards the upper half of the protector 300 through said gap. The cylindrical light absorbing rings 350, 350′ may reduce that phenomenon by surrounding the supports 200, 200′, and/or the light sources 100, 100′, and/or the diffusers 120, 120′, and/or the Louver elements 130, 130′, and/or the rods 701, 702, and/or the light absorbing element 340 in case of light absorbing ring 350′. The cylindrical light absorbing rings 350, 350′ may have a black inner surface facing the light sources 100, 100′ and an outer surface of a similar or different colour.

[0145] The rings 350, 350′ may enclose the rods 701 and 702, such that the rings can be slid into place around the rods 701 and 702. The rings 350, 350′ may be further fixed to the two rods 701 and 702 directly or indirectly via their respective support 200, 200′. In particular the ring 350′ may comprise connecting means 351′ and 352′ in the form of connecting tabs for fixing the ring 350′ to the support 200′ using for instance screws or other appropriate means. A similar arrangement may be used for connecting the ring 350 to the support 200.

[0146] The diffuser 120, 120′ may also be provided with apertures for mechanical connection to the respective support 200, 200′. The diffuser 120, 120′ may be a substantially flat plate. The diffuser 120, 120′ and the ring 350, 350′ may be fixed to the respective support 200, 200′ together using for instance a spacer and appropriate connecting elements interconnecting the respective support 200, 200′, the ring 350, 350′ and the diffuser 120, 120′ in a stacked manner

[0147] Where possible, the embodiment of FIGS. 8, 9 and 10 may be combined with previous embodiments.

[0148] According to a further embodiment, the light absorbing surface 340 may be a light absorbing coating arranged on an internal surface of the protector 300. Such an arrangement may be used on its own or combined with any of the previous embodiments.

[0149] According to a further embodiment the light absorbing surface 340 is part of the protector self. The protector may be made of a material with two light absorbing characteristics by addition of pigments for instance, or may be made of two materials with different light absorbing characteristics. Such an arrangement may also be used on its own or combined with any of the previous embodiments.

[0150] Optionally, a light absorbing circumferential wall (not shown) may be provided around the light source, in order to absorb a portion of the light emitted at large incident angles. The light absorbing circumferential wall may extend over a small distance into the protector 300. The light absorbing circumferential wall may be provided around one or more PCB's with LEDs. For example, the one or more PCB's may be arranged on the support 200, 200′, preferably a light absorbing support 200, 200′, and the light absorbing circumferential wall may protrude downward around the one or more PCB's to absorb a portion of the light emitted at large incident angles. The one or more PCB's may have any shape. For example a single rectangular or polygonal PCB may be provided. In a particular example the PCB may have the shape of a house (combination of a rectangle and a trapezoid), and the light absorbing circumferential wall may then also have the shape of a house.

[0151] Whilst the principles of the invention have been set out above in connection with specific embodiments, it is understood that this description is merely made by way of example and not as a limitation of the scope of protection which is determined by the appended claims.