Solar power luminaire head

Abstract

. A solar luminaire head (10) comprising a frame structure (100), a solar panel (151) supported by the frame structure (100), an energy storage means (148) and at least one light source (111), wherein the frame structure (100) has a topside supporting the solar panel (151), wherein the frame structure (100) has a bottom side comprising a cavity (140) in which the energy storage means (148) is received and a further cavity (120) receiving one or more electrical components (128) such as a driver configured for driving said at least one light source (111) or a charge controller for controlling the charging of the energy storage means (148) and the powering of the at least one light source (111) using power of the energy storage means (148), said at least one light source (111) being arranged on the bottom side; wherein the frame structure (100) comprises a thermal insulation layer (160) between the cavity (140) and the solar panel (151), wherein the frame structure (100) is made of plastic.

Description

[0001] SOLAR POWER LUMINAIRE HEAD

[0002] FIELD OF INVENTION

[0003] The field of the invention relates to a solar powered luminaire head and a luminaire with such luminaire head.

[0004] BACKGROUND

[0005] Traditionally, light systems have been powered from an established power network, i.e., a mains. To ensure uninterruptible power supply (UPS), it is further known to use power storage means. Luminaires have thus been provided in the art with a battery providing an offline autonomy in case of a mains failure.

[0006] In recent years, green renewable energies have been continuously applied to a broader field of application to reduce carbon emissions and power consumption costs. Also, for lighting purposes, it is now desired to use locally produced power from local renewable power sources.

[0007] Yet, current solutions using solar power in lighting are unpractical for luminaire head assemblies that need to be mounted on a pole. In particular for street lighting, there is a need for integrated solar power luminaire head assemblies.

[0008] In more recent years, hybrid solar power luminaires have been developed that can either be connected to an electrical grid or be powered through solar energy. Examples of such hybrid solar power luminaires are disclosed in the Dutch patent applications 2035963 and 2036391 in the name of the Applicant. Further, especially for southern countries, solar power luminaires which are solely powered by solar energy have been developed. Especially for locations where no electric grid is available and / or where sunlight is present in abundance, such luminaires are desirable.

[0009] Especially in those countries, high temperatures may be reached around the luminaire. Integrated solar luminaire heads have the disadvantage that they suffer from the undesired heat that is produced by the sunlight directly shining on the solar panel for extended periods of time as this tends to overheat the components of the luminaire, e.g. their battery.

[0010] SUMMARY

[0011] To improve the efficiency of a solar luminaire head, and to reduce deteriorating the lifespan of the energy storage means, the temperature of the energy storage means should not exceed some temperature threshold. The object of embodiments of the invention is to provide a solar luminaire head that allows to limit the amount of heat received by the energy storage means, resulting in reduced aging of the components of the luminaire head, and in particular of the energy storage means, and an improved efficiency of the luminaire head.

[0012] According to a first aspect, a solar luminaire head is provided which comprises a frame structure, a solar panel supported by the frame structure, an energy storage means, for example a battery or a capacitor, and at least one light source. The frame structure has a topside supporting the solar panel, and a bottom side comprising a cavity in which the energy storage means is received and a further cavity receiving one or more electrical components such as a driver configured for driving said at least one light source or a charge controller for controlling the charging of the energy storage means and the powering of the at least one light source using power of the energy storage means. The at least one light source is arranged on the bottom side of the frame structure. The frame structure comprises a thermal insulation layer between the cavity and the solar panel. The frame structure comprises plastic and is preferably made of plastic.

[0013] By providing a thermal insulation layer between the cavity and the solar panel, the energy storage means is shielded from the heat generated at the solar panel, and in particular heat radiated from the solar panel. In that way, lower temperatures are reached at the level of the energy storage means, even when temperatures are high and the sun is shining. This therefore improves the efficiency of the solar luminaire head, as the efficiency of the charging of the energy storage means is improved. This also improves the lifespan of the energy storage means.

[0014] This advantageous effect is further improved by the frame structure being made of plastic. Indeed, plastic is significantly less conductive of heat than more standard materials used for the manufacturing of luminaire heads, like metal. The heat isolation between the cavity and the solar panel is therefore further improved. Also, a frame structure in plastic has the advantage of having a reduced weight compared to metal frame structures and of being easier to manufacture.

[0015] Also, by having the cavity for the energy storage means and the further cavity for one or more other electrical components at the bottom side of the luminaire head, the energy storage means and the one or more other components are easily accessible if maintenance or replacement is desirable.

[0016] In an exemplary embodiment, the thermal insulation layer is an integral part of the frame structure. In this way, the manufacturing and assembly of the luminaire head is made easier. In an alternative embodiment, the thermal insulation layer may be a separate component such as a panel which is arranged or fixed in the frame structure. In an exemplary embodiment, the further cavity comprises one or more holes for wiring to the one or more electrical components. For example, there may be a passage in the frame structure between a hole in the further cavity and a hole in the cavity in order to connect one or more electrical components, such as a charge controller or a driver, to the energy storage means, such as a battery or a capacitor. Also, there may be a passage in the frame structure between a hole in the further cavity and a light source mounting area in order to connect the one or more electrical components, such as a charge controller or a driver, to the at least one light source.

[0017] In an exemplary embodiment, the solar luminaire head further comprises a mounting part configured to fix the luminaire head to a base support, such as a pole. Preferably, a fixation end of the mounting part is a post-top fixation end, i.e. a fixation end that is configured to receive a substantially vertical pole end. Alternatively, the fixation end may be a side-entry fixation end, i.e. a fixation end that is configured to receive a substantially horizontal pole end.

[0018] In an exemplary embodiment, the mounting part is located between the cavity and the further cavity.

[0019] In this way, the cavity is located at a distance from the further cavity. Therefore, the electrical components, which also may generate heat while functioning, are further apart from the energy storage means. In this way, the energy storage means is further shielded from the heat radiated by the electrical components, thereby also improving the efficiency and lifespan of the energy storage means. Also, the weight of the luminaire head is divided on both sides of the base.

[0020] In an exemplary embodiment the frame structure has a base protruding from the bottom side of the luminaire head and the luminaire head further comprises a funnel shaped part, preferably a metal part, comprising the fixation end, which is fixed to the base of the frame structure. The funnel shaped part is configured to receive a pole end. Preferably, the base and the funnel shaped part have a round shape, seen in a cross-section. The funnel shaped part and the base form the mounting part.

[0021] Since the base protrudes from the frame structure, it is more easily accessible to fix the luminaire head to the base support.

[0022] In an exemplary embodiment, the mounting part comprises a tubular part, for example a partially funnel shaped part, preferably a metal part, comprising the fixation end. The tubular part is fixed to a circumferential side of the frame structure. The fixation end of said tubular part is configured to receive a pole end. In a preferred embodiment, the tubular part is pivotable and can be fixed to the frame structure in a plurality of positions including a first position and a second position. The first position corresponds to a post-top fixation. The second position corresponds to a side-entry fixation. The tubular part may be fixed in a plurality of intermediate positions between these two.

[0023] In a preferred embodiment, the circumferential side of the frame structure is provided with teeth and the tubular part comprises an end part provided with corresponding teeth configured to cooperate with the teeth of the frame structure. In this way, slippage is avoided and thus, once fixed, the pivoting of the tubular part is prevented.

[0024] In an exemplary embodiment, the thermal insulation layer is a panel such as a solid panel, preferably a plastic panel, forming at least part of the bottom of the cavity. Preferably, said panel is an integral part of the frame structure. Alternatively, the panel may be a separate panel which is arranged, typically fixed, in the frame structure.

[0025] Preferably, a thickness of the thermal insulation layer is at least 1mm, preferably at least 2mm, more preferably at least 2.5mm.

[0026] As mentioned above, plastic is significantly less conductive of heat than more standard materials used for the manufacturing of luminaire heads like metal. Also, plastic is cheaper and easier to manufacture. The thermal insulation layer being made of a solid plastic panel therefore allows for cheaper and easier manufacture.

[0027] In addition, the solid plastic panel allows for easy fixation of the energy storage means to the bottom of the cavity.

[0028] In an exemplary embodiment, the cavity has a bottom wall comprising at least one first support portion configured to support the energy storage means and at least one second bottom portion, said at least one first support portion being positioned at a first distance of the solar panel and said at least one second support portion being positioned at a second distance of the solar panel smaller than the first distance. Optionally, the at least one second bottom portion comprises a strengthening grid. Such grid may comprise a plurality of ridges protruding from the bottom wall.

[0029] In this way, the energy storage means can be supported on the at least one first support portion and is brought further apart from the solar panel. Thereby, the insulation between the energy storage means and the solar panel is further improved.

[0030] In addition, the area between the at least one second bottom portion of the bottom wall and the energy storage means, which may be filled with air, improves the insulation between the energy storage means and the solar panel. In an exemplary embodiment, the bottom wall forms the thermal insulation layer. In this way, the frame structure with integrated insulation layer can be molded in one piece, resulting in a cheaper and easier manufacturing of the luminaire head.

[0031] In an exemplary embodiment, the topside comprises at least one recessed portion opposite the at least one first support portion. Optionally, the topside further comprises a strengthening plate arranged in the at least one recessed portion.

[0032] This at least one recessed portion opposite the at least one first support portion in the cavity has also the advantageous effect of bringing the bottom of the cavity further apart from the solar panel, thereby improving the insulation between the energy storage means and the solar panel.

[0033] Further, as this at least one recessed portion may be filled with air, the insulation between the energy storage means and solar panel is further improved..

[0034] In this way, multiple air compartments may be present between the energy storage means and the solar panel, namely an air compartment at the level of the peripheral portions at the bottom side of the frame structure and an air compartment in the at least one recessed portion at the topside.

[0035] In addition, the at least one recessed portion allows for the placement of a strengthening plate, to bring more rigidity to the frame structure. This strengthening plate also has the advantageous effect that insulation is improved.

[0036] In an exemplary embodiment, the solar panel is supported on at least one topside portion opposite the at least one second bottom portion of the cavity.

[0037] In this way, the solar panel is better supported. Bending and / or breakage of the solar panel is then more easily avoided.

[0038] In an exemplary embodiment, the solar panel is glued to the topside.

[0039] In this way, the solar panel may add to the rigidity of the luminaire head. Indeed, by gluing it in place, the solar panel also has a structural function, which limits the bending of the frame structure. It also improves the vibration properties of the luminaire head.

[0040] Additionally, the glue may act as a sealant, thereby avoiding that fluids and / or dust may infiltrate beneath the solar panel.

[0041] In an exemplary embodiment, the topside has a peripheral groove in which an adhesive, such as a silicon glue, is arranged to adhere the solar panel to the topside. As mentioned above, the glue, e.g. a silicon glue, may act as a sealant, thereby avoiding that fluids and / or dust may infiltrate beneath the solar panel.

[0042] In an exemplary embodiment, the topside of the frame structure comprises a recessed top portion underneath the solar panel. Preferably, the recessed top portion is delimited by peripheral walls of the frame structure

[0043] In this way, as this recessed top portion may be filled with air, the insulation between the cavity and the solar panel is further improved, which ultimately also improves the thermal insulation between the energy storage means and the solar panel.

[0044] Also, having a recessed top portion allows to reduce the amount of material that is needed to manufacture the frame structure. Therefore, the frame structure is advantageous ecologically and financially. Also, the frame structure and thus the luminaire head are less heavy, which allows for an easier and less cumbersome manipulation during the installing and / or the maintaining of the luminaire head.

[0045] In an exemplary embodiment, the solar panel module is fixed on a peripheral portion of the topside. Additionally, the peripheral portion surrounds the recessed top portion. Preferably the solar panel is glued.

[0046] In this way, in addition to the advantages of using glue mentioned above, an easier assembly is obtained.

[0047] In an exemplary embodiment, a peripheral portion of the topside is provided with a plurality of clamps extending over the solar panel, so as to clamp the solar panel to the topside. For example, the clamps may be fixed to the frame structure by screwing / bolting them to the frame structure. While the clamps may be used alone, e.g. without any glue, the solar panel module may still be fixed with glue on a peripheral portion of the topside surrounding the recessed top portion and in addition, clamped. For example, while an adhesive, such as a silicon glue, is arranged in a peripheral groove and is in the process of curing, the clamps may be used to clamp and fix the solar panel module to the frame structure such that the luminaire head can be packaged and shipped. The clamps can then be removed once the adhesive has cured, or prior to the installation.

[0048] In an exemplary embodiment, the topside of the frame structure comprises a strengthening grid. Such grid may comprise a plurality of ridges protruding from the topside and arranged in accordance with a pattern.

[0049] By having a strengthening grid instead of a solid body, the amount of material that is needed to manufacture the frame structure is reduced while still improving the rigidity of the structure. Therefore, the frame structure is advantageous ecologically and financially. Also, the frame structure and thus the luminaire head are less heavy, which allows for an easier and less cumbersome manipulation during the installing and / or the maintaining of the luminaire head.

[0050] In addition, the solar panel may be supported by the strengthening grid. For example, the solar panel may rest on the top part of the strengthening grid. This also allows to create air pockets, that allow to further thermally insulate the solar panel from the one or more electrical components and the energy storage means.

[0051] In an exemplary embodiment, the strengthening grid is arranged in the recessed top portion.

[0052] In an exemplary embodiment, the cavity comprises one or more holes configured for the cabling to the energy storage means.

[0053] In an exemplary embodiment, the recessed top portion spans substantially the whole length and / or the whole width of the frame structure.

[0054] In this way, the solar panel covers the entirety of the frame structure. It then naturally provides with a barrier against the infiltration of fluids, such as rain, and / or dust. Also, the surface is used more effectively for the production of electrical power.

[0055] In an exemplary embodiment, the one or more electrical components comprise a driver configured to drive said at least one light source. Also, the energy storage means is electrically connected to the solar panel and to the driver.

[0056] In this way, an integrated and compact luminaire is obtained, which does not necessitate to have a separate housing for the driver.

[0057] In an exemplary embodiment, the one or more electrical components comprise a charge controller configured to control the charging of the energy storage means and the powering of the at least one light source.

[0058] The charge controller may have an internal clock, that allows to determine whether it is day or night. For example, the charge controller may detect that sunset has occurred by monitoring the voltage delivered by the solar panel. If this voltage drops below some threshold, it is a sign that there is not enough light to provide with the maximal voltage, and that the sun is setting or has set. The charge controller may then use power from the energy storage means to light the at least one light source, for example according to stored dimming profiles. Through at least one day and night cycle, the charge controller may learn, e.g. through self-learning, the timings of the sunset and of the sunrise, such that the night dimming profiles are not followed each time there is a drop in sunlight, e.g. in case of bad weather. Also, the seasonal changes in the sunset and sunrise timings may be learned such that the dimming profiles are also adapted throughout the year.

[0059] In this way, the powering of the at least one light source is controlled in an effective manner.

[0060] In an exemplary embodiment, the luminaire head further comprises a door configured to close the cavity at the bottom side.

[0061] In this way, the content of the cavity, e.g. the energy storage means, is easily accessible for the installation and for the maintenance.

[0062] The door may be made of plastic, but may also be made of other materials, such as metal, e.g. aluminum. Having a door made out of metal has the advantage that heat may be more easily dissipated.

[0063] In an exemplary embodiment, the luminaire head further comprises a further door configured to close the further cavity at the bottom side.

[0064] In this way, the content of the cavity, e.g. the energy storage means, is easily accessible for the installation and for the maintenance.

[0065] The door may be made of plastic, but may also be made of other materials, such as metal, e.g. aluminum. Having a door made out of metal has the advantage that heat may be more easily dissipated.

[0066] In an exemplary embodiment, the at least one light source may be arranged in the further cavity, i.e. in the same cavity into which the one or more electrical components are arranged. Preferably, the luminaire head comprises a cover, configured to close the further cavity, preferably in a sealed manner. For example, the cover may be pivotably connected to the frame structure, for providing access to the further cavity.

[0067] In this way, easy access to the at least one light source and to the one or more electrical components is achieved.

[0068] In an exemplary embodiment, the luminaire head comprises at least one socket, preferably a NEMA and / or a Zhaga socket. Preferably, the socket is configured to receive a functional module, such as a sensor module and / or an loT module configured to monitor and / or to control the one or more electrical components of the luminaire head and / or a pluggable controller module. For example, the socket may be arranged on the further door or on the cover. In this way, the addition of a sensor or of a controller is made easier, as the cover or the further door does not need to be opened. Maintenance and / or installation of new modules is made tool-less, which facilitates interventions and improves their efficiency.

[0069] Examples of sockets, also referred to as receptacles, notably NEMA-type and Zhaga-type receptacles, configured for cooperating with a pluggable module are disclosed in patent applications WO2017 / 133793A1, WO2020 / 212515A1, W02021 / 001544A1, W02020 / 099393A1, W02022 / 029099A1, and PCT / EP2022 / 050240 in the name of the applicant, which are included herein by reference. WO2017 / 133793A1 describes how to implement a receptacle comprising a near-field communication means configured to communicate with a near-field communication unit. WO2020 / 212515A1 describes a receptacle wherein at least one receptacle contact of a plurality thereof is provided, at a rear end of the receptacle, with at least two wires, such that the number of wires provided at the rear side is higher than the number of front contact portions. W02021 / 001544A1 describes a receptacle including at least one peripheral body around its peripheral side and coupled in such a manner with a wall of a luminaire that the at least one peripheral body is non-rotatable relative to the wall; and wherein the at least one peripheral body and the peripheral side of the receptacle are coupled such that the receptacle is non-rotatable relative to the at least one peripheral body. W02020 / 099393A1 describes a receptacle with a wire connector having a front side and a rear side, said wire connector housing a plurality of connector contacts, each connector contact being provided, at a rear end, with a wire receiving contact for receiving and fixing a wire end and, at a front end, with a front contact portion; wherein the rear side of the receptacle and the front side of the wire connector are configured such that the wire connector is removably pluggable in the rear side of the receptacle. W02022 / 029099A1 describes a receptacle assembly including a receptacle and a gasket, said gasket being configured for being located between the receptacle and a housing of a luminaire; wherein said receptacle assembly is provided with an indicator means at a location which is visible when the receptacle is mounted on the housing. PCT / EP2022 / 050240 describes a receptacle assembly including a receptacle and a protection skirt; wherein said receptacle assembly is configured to be mounted on a lower side of a housing of a luminaire; wherein said protection skirt is configured to surround the receptacle.

[0070] In an exemplary embodiment, the luminaire head further comprises a functional module, such as a sensor, preferably a motion sensor, and / or an loT module configured to monitor and / or to control the one or more electrical components of the luminaire head. Preferably, the functional module, e.g. the sensor, is arranged on or in the further door or on or in the cover.

[0071] For example, the sensor may be a motion sensor monitoring an area around the luminaire on which the luminaire head is mounted. In this way, it is possible to monitor whether it is desirable to illuminate an area with more or less power. For example, it might be desirable to illuminate with a dimmed light or not illuminate at all when no object is detected by the sensor. The light source of a luminaire in a pare in the middle of the night may be dimmed or not powered at all to preserve the wildlife unless an object, e.g. a person, is detected in the monitored area. In that case, upon presence detection, the light may be ramped up to a predetermined light output, e.g. 100% light output. If no presence is detected, the light output reduces back to its dim profile output. If, however, another presence has been detected within the time frame, the light output may remain at 100% for another time frame. Other types of sensors, such as sound sensors, IR, lidar, etc. may also be used instead, or in addition to the motion sensor.

[0072] This has the advantageous effect that less power is consumed undesirably, which preserves the energy storage means and extends the autonomy of the energy storage means. This feature therefore offers the best economical solution whilst still maintaining high-performance lighting during times of operation.

[0073] In another example, the sensor may monitor the luminosity level around the luminaire. During the day, when the sun shines, no illumination might be needed from the light source. However, after sunset, or due to bad weather, when luminosity is poor, illumination may be desirable.

[0074] In this way, the luminaire is thus more versatile and adaptable to environmental conditions around the luminaire.

[0075] According to a second aspect, a luminaire comprising at least one solar luminaire head of the exemplary embodiments described above is provided. The solar luminaire head is attached to a pole end of a pole such that an angle between a horizontal plane and a longitudinal direction of the solar panel of the luminaire head is above 2 degrees, preferably above 3 degrees, more preferably above 5 degrees.

[0076] By having a slight angle between the longitudinal direction of the solar panel of the luminaire head and an horizontal plane, it is avoided that fluids and particles may stagnate on top of the solar panel, e.g. rain, sand, dust, thereby improving the efficiency of the luminaire.

[0077] In addition, by having an angle, the solar panel may be better oriented to capture light from the sun, thereby also increasing the efficiency of the power production.

[0078] In some exemplary embodiments, the luminaire may comprise a pole with a plurality of pole ends, in which case a luminaire head according to the exemplary embodiments above may be attached at each of the pole ends.

[0079] The skilled person will understand that the technical advantages of this second aspect correspond, mutatis mutandis, to the advantages of the first aspect described above. They will not be repeated, in the sake of conciseness. Preferably, the luminaire is not connected to the grid. In this way, the luminaire may be placed anywhere without the need for a grid infrastructure.

[0080] According to further aspects of the invention, the solar luminaire head may be implemented according to any one of the clauses below:

[0081] 1. A solar luminaire head (10) comprising a frame structure (100), a solar panel (151) supported by the frame structure (100), an energy storage means (148) and at least one light source (111), wherein the frame structure (100) has a topside supporting the solar panel (151), wherein the frame structure (100) has a bottom side comprising a cavity (140) in which the energy storage means (148) is received and a further cavity (120) receiving one or more electrical components (128) such as a driver configured for driving said at least one light source (111) or a charge controller for controlling the charging of the energy storage means (148) and the powering of the at least one light source (111) using power of the energy storage means (148), said at least one light source (111) being arranged on the bottom side; wherein the frame structure (100) comprises a thermal insulation layer (160) between the cavity (140) and the solar panel (151).

[0082] 2. The solar luminaire head (10) of clause 1, wherein the thermal insulation layer (160) has an R- value larger than 0.1 m2K / W.

[0083] 3. The solar luminaire head (10) of clause 1 or 2, wherein the thermal insulation layer (160) comprises plastic.

[0084] 4. The solar luminaire head (10) of any one of the previous clauses, wherein the thermal insulation layer (160) comprises any one or more of the following materials: a resin material, wood, a polymer.

[0085] 5. The solar luminaire head (10) of any one of the previous clauses, wherein the thermal insulation layer (160) does not comprise metal.

[0086] 6. The solar luminaire head (10) of any one of the previous clauses, wherein the thermal insulation layer is an integral part of the frame structure.

[0087] 7. The solar luminaire head (10) of any one of the previous clauses, said further cavity (120) comprising one or more holes (121, 122, 123, . . .) for wiring to the one or more electrical components (128).

[0088] 8. The solar luminaire head (10) of any one of the previous clauses, further comprising a mounting part (130) having a fixation end configured to fix the luminaire head (10) to a base support, such as a pole, wherein preferably said fixation end is a post-top fixation end.

[0089] 9. The solar luminaire head (10) of the previous clause, wherein the mounting part (130) is located between the cavity (140) and the further cavity (120). 10. The solar luminaire head (10) of clause 8 or 9, wherein the frame structure (100) has a base (134) protruding from the bottom side of the luminaire head (10) and the luminaire head (10) further comprises a funnel shaped part (131), preferably a metal part, which is fixed to the base (134) of the frame structure (100), said funnel shaped part (131) being configured to receive a pole end (132); wherein the funnel shaped part (131) and the base (134) form the mounting part (130).

[0090] 11. The solar luminaire head (10) of the previous clause, wherein the base (134) and the funnel shaped part (131) have a round shape, seen in a cross-section.

[0091] 12. The solar luminaire head (10) of any one of the previous clauses, wherein the thermal insulation layer (160) is a solid panel forming at least part of the bottom of the cavity (140).

[0092] 13. The solar luminaire head (10) of the previous clause, wherein a thickness of the solid panel is at least 1 mm, preferably at least 2 mm, more preferably at least 2.5 mm.

[0093] 14. The solar luminaire head (10) of any one of the previous clauses, wherein the cavity (140) has a bottom wall comprising at least one first support portion (143) configured to support the energy storage means and at least one second bottom portion (142a, 142b), said at least one first support portion (143) being positioned at a first distance of the solar panel (151) and said at least one second support portion (142a, 142b) being positioned at a second distance of the solar panel smaller than the first distance and optionally comprising a strengthening grid (147).

[0094] 15. The solar luminaire head (10) of the previous clause, wherein the bottom wall forms the thermal insulation layer (160).

[0095] 16. The solar luminaire head (10) of clause 14 or 15, wherein the topside comprises at least one recessed portion (145) opposite the at least one first support portion (143).

[0096] 17. The solar luminaire head (10) of any one of clauses 14-16, wherein the solar panel (151) is supported on at least one topside portion (146a, 146b) opposite the at least one second bottom portion (142a, 142b) of the cavity (140).

[0097] 18. The solar luminaire head (10) of any one of the previous clauses, wherein the solar panel (151) is glued to the topside.

[0098] 19. The solar luminaire head (10) of the previous clause, wherein the topside has a peripheral groove (153) in which an adhesive, such as a silicon glue, is arranged to adhere the solar panel (151) to the topside.

[0099] 20. The solar luminaire head (10) of any one of the previous clauses, wherein the topside of the frame structure (100) comprises a recessed top portion (150) underneath the solar panel (151).

[0100] 21. The solar luminaire head (10) of the previous clause, wherein the solar panel module (151) is fixed, preferably glued, on a peripheral portion (154) of the topside, said peripheral portion (154) surrounding the recessed top portion (150).

[0101] 22. The solar luminaire head (10) of any one of the previous clauses, wherein the topside of the frame structure (100) comprises a strengthening grid (170). 23. The solar luminaire head (10) of clauses 20 and 22, wherein the strengthening grid (170) is arranged in the recessed top portion (150).

[0102] 24. The solar luminaire head (10) of any one of the previous clauses, wherein the cavity (140) comprise one or more holes (141) configured for the cabling to the energy storage means (148).

[0103] 25. The solar luminaire head (10) of clause 20 and any one of the previous clauses, wherein the recessed top portion (150) spans substantially the whole length and / or the whole width of the frame structure (100).

[0104] 26. The solar luminaire head (10) of any one of the previous clauses, wherein the one or more electrical components (128) comprise a driver configured to drive said at least one light source

[0105] (111), wherein the energy storage means (148) is electrically connected to the solar panel (151) and to the driver.

[0106] 27. The solar luminaire head (10) of any one of the previous clauses, wherein the one or more electrical components (128) comprise a charge controller configured to control the charging of the energy storage means (148) and the powering of the at least one light source (111).

[0107] 28. The solar luminaire head (10) of any one of the previous clauses, further comprising a door (146) configured to close the cavity (140).

[0108] 29. The solar luminaire head (10) of any one of the previous clauses, further comprising a further door (126) configured to close the further cavity (120).

[0109] 30. The solar luminaire head (10) of any one of the previous clauses, further comprising a sensor (127), preferably a motion sensor.

[0110] 31. The solar luminaire head (10) of clauses 29 and 30, wherein the sensor (127) is arranged on the further door (126).

[0111] 32. A luminaire comprising the solar luminaire head (10) of any of the previous clauses and a pole, wherein the solar luminaire head (10) is attached to a pole end (132) of the pole such that an angle (0) between a horizontal plane and a longitudinal direction of the solar panel (151) of the luminaire head (10) is above 2 degrees, preferably above 3 degrees, more preferably above 5 degrees.

[0112] BRIEF DESCRIPTION OF THE FIGURES

[0113] The accompanying drawings are used to illustrate presently preferred non-limiting exemplary embodiments of the present invention. The above and other advantages of the features and objects of the invention will become more apparent, and the invention will be better understood from the following detailed description when read in conjunction with the accompanying drawings.

[0114] Fig. la is a perspective view of the bottom side of an embodiment of a frame structure of a luminaire head.

[0115] Fig. lb is a transverse cross-section of the frame structure of Fig. la. Fig. 1c is a view from directly below the frame structure of Fig. la.

[0116] Fig. 2a is a perspective view of the topside of the frame structure of Fig. la.

[0117] Fig. 2b is a view from directly above the frame structure of Fig. la.

[0118] Fig. 3 is a perspective view from the side of the frame structure of Fig. la.

[0119] Fig. 4a illustrates a perspective view from the side and slightly from below of an embodiment of a luminaire head according to the invention when mounted on a pole.

[0120] Fig. 4b illustrates a perspective view from the side and slightly from above of the luminaire head of Fig. 4a.

[0121] Fig. 5a illustrates a view from the bottom of the luminaire head of Fig. 4a.

[0122] Fig. 5b is a transverse cross-section view of the luminaire head of Fig. 4a.

[0123] Fig. 5c is a longitudinal cross-section view of the luminaire head of Fig. 4a.

[0124] Fig. 6a illustrates a perspective view, looking at a lower side, of another embodiment of a frame structure of a luminaire head according to the invention.

[0125] Fig. 6b illustrates a detailed perspective view of a portion of the frame structure of Fig. 6a.

[0126] Fig. 6c illustrates a view from directly below the frame structure of Fig. 6a.

[0127] Fig. 7a is a perspective view of the topside of the frame structure of Fig. 6a.

[0128] Fig. 7b is a view from directly above the frame structure of Fig. 6a.

[0129] Fig. 8a illustrates a perspective view from the side of the frame structure of Fig. 6a.

[0130] Fig. 8b illustrates another perspective view from the rear side of the frame structure of Fig. 6a.

[0131] Fig. 9a illustrates a perspective view of an embodiment of a luminaire head according to the invention when mounted on a pole.

[0132] Fig. 9b illustrates a perspective view, looking at an upper side, of the luminaire head of Fig. 9a.

[0133] Fig. 10 illustrates a view from the bottom side of two embodiments, one being the luminaire head of Fig. 9a, the other being similar to the luminaire head of Fig. 9a.

[0134] DETAILED DESCRIPTION OF EMBODIMENTS

[0135] Fig. la-c, 2a-b and 3 illustrate the same embodiment of a frame structure 100 of a luminaire head.

[0136] Fig. la is a perspective view of the bottom side of the frame structure 100 with the following features.

[0137] The frame structure 100 has a topside, not represented here, configured to support the solar panel. The frame structure 100 has a bottom side comprising a cavity 140 in which the energy storage means, not represented here, is received and a further cavity 120 receiving one or more electrical components, not represented here, such as a driver configured for driving the at least one light source or a charge controller for controlling the charging of the energy storage means and the powering of the at least one light source using power of the energy storage means, the at least one light source being arranged on the bottom side in 110. The frame structure 100 comprises a thermal insulation layer 160 between the cavity 140 and the solar panel. The frame structure 100 may be made of plastic.

[0138] The thermal insulation layer 160 is an integral part of the frame structure 100. The thermal insulation layer 160 may be a solid plastic panel forming at least part of the bottom of the second cavity 140. The cavity 140 has a bottom wall comprising at least one first support portion, here one, 143 and at least one second bottom portion, here two, 142a, 142b. These second bottom portions comprise a strengthening grid 147. As visible from the figure, the first support portion 143 and the second support portions 142a, 142b are positioned at a first and a second distance of the solar panel, respectively, the second distance being smaller than the first distance, i.e. the second bottom portions 142a, 142b are closer to the solar panel than the first support portion 143. In other words, the at least one first support portion 143 therefore protrudes towards the opening of the cavity as compared to the at least one second bottom portion 142a, 142b. The bottom wall may form the thermal insulation layer 160.

[0139] The further cavity 120 comprises one or more holes 121, 122, 123 for wiring to the one or more electrical components of the further cavity 120.

[0140] The frame structure 100 of Fig. la comprises a base 134 protruding from the bottom side of the frame structure 100. The base 134 is configured to be fixed to a funnel part, not represented here, configured to receive a pole end to fix the luminaire head to a base support, such as a pole. The base 134 is located between the cavity 140 and the further cavity 120.

[0141] Fig. lb is a cross section view of the frame structure of Fig. la at the level of the cavity 140.

[0142] As further illustrated in Fig. 2a, the topside of the frame structure 100 comprises a recessed top portion 150 underneath the solar panel. Also, the frame structure 100 comprises a peripheral portion 154 on the topside, on which the solar panel module may be fixed. The peripheral portion 154 surrounds the recessed top portion 150. Alternatively or additionally, the topside has a peripheral groove 153 in which an adhesive, such as a silicon glue, may be arranged to adhere the solar panel 151 to the topside. Fig. 1c is a view from directly below the frame structure. In addition to the features already discussed above, that the cavity 140 comprises one or more holes 141 configured for the passage to the energy storage means.

[0143] Fig. 2a is a perspective view of the topside of the frame structure 100 and Fig. 2b is a view from directly above the frame structure.

[0144] The topside comprises at least one recessed portion 145 opposite the at least one first support portion 143 of Figs. la-c. The at least one topside portion, here two, 146a, 146b opposite the at least one second bottom portion 142a, 142b of the cavity 140 may be configured to support the solar panel.

[0145] As already illustrated in Fig. lb, the topside of the frame structure 100 comprises a recessed top portion 150 underneath the solar panel, a peripheral portion 154 on the topside surrounding the recessed top portion 150 and a peripheral groove 153. The recessed top portion 150 spans substantially the whole length and / or the whole width of the frame structure 100. The topside of the frame structure 100 comprises a strengthening grid 170 arranged in the recessed top portion

[0146] 150. As further illustrated in Fig. 5b and 5c, the strengthening grid 170 may support the solar panel

[0147] 151.

[0148] Fig. 3 is a perspective view from the side of the frame structure 100.

[0149] The mounting part, located between the cavity 140 and the further cavity 120, is such that when the solar luminaire head is attached to a pole end of a pole, there is an angle 0 between a horizontal plane and a longitudinal direction of the solar panel of the luminaire head that is above 2 degrees, preferably above 3 degrees. For example, as illustrated in Fig. 3, the base 134 may be configured to receive a post-top fixation end and there may be an angle 0 between a horizontal plane P of the solar panel, and a mounting surface 133 of the base 134, the angle 0 being above 2 degrees, preferably above 3 degrees.

[0150] Fig. 4a illustrates a perspective view from the side and slightly from below of a luminaire head according to the invention when mounted on a pole.

[0151] The luminaire head comprises a frame structure 100 made of plastic, a solar panel 151 supported by the frame structure 100, an energy storage means and at least one light source 111. The frame structure 100 has a topside supporting the solar panel 151, and a bottom side comprising a cavity 140 in which the energy storage means is received and a further cavity 120 receiving one or more electrical components such as a driver configured for driving the at least one light source 111 or a charge controller for controlling the charging of the energy storage means and the powering of the at least one light source 111 using power of the energy storage means. The at least one light source 111 is arranged on the bottom side of the frame structure 100. The frame structure 100 comprises a thermal insulation layer 160, not represented here, between the cavity 140 and the solar panel 151.

[0152] In Fig. 4a, the frame structure 100 corresponds to the frame structure illustrated in Figs. 1-3, although some of the features illustrated in these figures are not essential.

[0153] The luminaire head of Fig. 4a comprises a funnel shaped part 131, preferably a metal part, which is fixed to the base 134 of the frame structure 100. The funnel shaped part 131 is configured to receive a pole end 132. The funnel shaped part 131 and the base 134 of the frame structure form the mounting part 130 of the luminaire head. The mounting part 130 is located between the cavity 140 and the further cavity 120. Preferably, the funnel shaped part 131 is a post-top fixation end. The funnel shaped part 131 and the base have a round shape, seen in a cross-section, e.g. a cross section orthogonal to an axis of the funnel shaped part 131.

[0154] The luminaire head further comprises a door 146 configured to close the cavity 140 and a further door 126 configured to close the further cavity 120. The luminaire head may also comprise a sensor 127, preferably a motion sensor. As illustrated in Fig. 4a, the sensor 127 may be arranged on the further door 126. For example, the sensor 127 may be arranged in a socket, arranged on the further door 126.

[0155] In an exemplary embodiment, the sensor may be a motion sensor monitoring an area around the luminaire on which the luminaire head is mounted. The illumination may be dependent on the sensor signal. For example, upon presence detection, the light may be ramped up to 100% light output. If no presence is detected, the light output reduces back to its dim profile output. If, however, another presence has been detected within the time frame, the light output may remain at 100% for another time frame. The sensor may override the dimming profiles that are followed at that moment.

[0156] A luminaire comprising the solar luminaire head such as the one illustrated here may comprise a pole. The solar luminaire head is then attached to a pole end 132 of the pole such that an angle 0 between a horizontal plane and a longitudinal direction of the solar panel 151 of the luminaire head 10 is above 2 degrees, preferably above 3 degrees. Fig. 4b illustrates a perspective view from the side and slightly from above of this same luminaire head.

[0157] The solar panel may span substantially the whole length and / or the whole width of the frame structure 100.

[0158] Fig. 5a illustrates a view from the bottom of the luminaire head of Fig. 4a and the cuts B-B and C- C used for the transverse B-B and longitudinal CC cross-section views, in Fig. 5b and Fig. 5c, respectively.

[0159] The solar panel module 151 may be fixed, preferably glued. For example, as illustrated in Fig. 5b, the solar panel 151 may be fixed on a peripheral portion 154 of the topside surrounding the recessed top portion 150. The topside may have a peripheral groove 153 in which an adhesive, such as a silicon glue, is arranged to adhere the solar panel 151 to the topside. The topside may comprise at least one topside portion, here two, 146a, 146b opposite the at least one second bottom portion 142a, 142b of the cavity 140 which further support the solar panel 151.

[0160] The luminaire head comprises an energy storage means 148 arranged in the cavity 140. The energy storage means 148 is fixed in the cavity 140 against the thermal insulation layer 160. Here, the energy storage means 148 is bolted to the thermal insulation layer 160, which corresponds to the at least one first support portion 143 of the bottom wall of the cavity 140. The peripheral portions 142a and 142b are thus filled with air. The energy storage means 148 may not be totally flat, and some portions of the energy storage means 148 may protrude in the peripheral portions 142a and 142b. For example, these protruding portions of the energy storage means 148 may contact the strengthening grid 147 within the peripheral portions 142a and 142b.

[0161] The at least one recessed portion 145 opposite the at least one first support portion 143 and the recessed top portion 150 underneath the solar panel 151 may also be filled with air. As illustrated in Fig. 5c, the solar panel 151 may be further supported by the strengthening grid 170. For example, the solar panel 151 may rest on the top part of the strengthening grid 170. Additionally, as illustrated in Figs. 5b and 5c, a pair of additional ribs 149, preferably made of metal, may be attached to the frame structure 100 to provide more strength. For example, these additional ribs 149 may span a significant portion of the length of the frame structure 100, e.g. the whole length of the frame structure and / or from one end up to the portion of the mounting part 130.

[0162] The one or more electrical components 128 of the further cavity 120, may comprise a driver configured to drive the at least one light source 111. The one or more electrical components 128 may comprise a charge controller configured to control the charging of the energy storage means 148 and the powering of the at least one light source 111. The energy storage means 148 is electrically connected to the solar panel 151 and to the one or more electrical components 128, such as the driver and / or the charge controller.

[0163] The charge controller may have an internal clock, that allows to determine whether it is day or night. For example, the charge controller may detect that sunset has occurred by monitoring the voltage delivered by the solar panel. If this voltage drops below some threshold, it is a sign that there is not enough light to provide with the maximal voltage, and that the sun is setting or has set. For example, for a maximal voltage delivered by the solar panel of 18 V when the sun is shining, the threshold may be set around 12V, such that a drop below 12V causes the charge controller to use power from the energy storage means to light the at least one light source. One it is night time, the powering of the at least one light source may be done according to stored dimming profiles. Through at least one day and night cycle, the charge controller may learn, e.g. through selflearning, the timings of the sunset and of the sunrise, such that the night dimming profiles are not followed each time there is a drop in sunlight, e.g. in case of bad weather.

[0164] Figs. 6a- 10 illustrate other embodiments of the frame structure and luminaire head comprising such frame structure. These figures are similar to Figs. la-5c of the first embodiment and like reference numerals in the drawings refer to like elements throughout, and reference is made to the discussion above of those figures. The skilled person understands that their function is equivalent to the one of the first embodiment, unless mentioned otherwise.

[0165] As illustrated in Fig. 6b, the cavity 140 is provided with at least two sets of tubular receiving means 161, 162. Each set of tubular receiving means 161, 162 is configured to receive a set of fixation means, such as bolts or screws, to attach an energy storage means unit, e.g. a battery, to the frame structure. A first set 161 of tubular receiving means may have a height which is lower than the height of the second set 162 of tubular receiving means. For example, a first battery (not shown) may be fixed to the frame structure 100 by bolting it to the first set of tubular receiving means 161 and a second battery (not shown) may be fixed to the frame structure 100, for example on top of the first one, by bolting it to the second set of tubular receiving means 162. The two batteries may thus lie on top of one another.

[0166] As visible from Figs. 6a, 8a, 9a and 10, and contrary to the embodiment of Figs. 4a-4b, the at least one light source may be arranged into the further cavity 120, i.e. in the same cavity into which the one or more electrical components 128 are arranged. The further cavity 120 is closed by a cover 116 configured to cover and enclose the at least one light source 111 as well as the one or more electrical components 128 within the further cavity 120. In preferred embodiments, the cover 116 is also configured to seal the compartment delimited by the cover 116 and the further cavity 120. The cover 116 is preferably translucent and / or transparent at least in a portion of the cover directly opposite to the at least one light source 111. Other portions of the cover are not necessarily transparent, nor translucent and may be opaque, e.g. a portion of the cover directly opposite the electrical components 128, as also visible in Fig. 10. The cover 116 may be pivotably connected to the frame structure, for providing access to the further cavity 120.

[0167] As illustrated in Figs. 6c, 8a and 8b, the first and second embodiment differ in that the frame structure 100 does not comprise a base protruding from the bottom side of the luminaire head 10. Instead, the mounting part comprises a tubular part 131, for example a partially funnel shaped part, preferably made of metal, comprising the fixation end and being fixed to a circumferential side of the frame structure, e.g. a recessed portion 134 in the rear side of the frame structure 100. Also, contrary to the embodiment illustrated in Figs. 4a-4b, the mounting part is not located between the cavity 140 and the further cavity 120, but is preferably at an end of the frame structure 100. The circumferential side of the frame structure 100, and in particular the recessed portion 134, may be provided with teeth 134a, 134b and the tubular part may comprise an end part 1312 provided with corresponding teeth 131a, 131b configured to cooperate with the teeth 134a, 134b of the frame structure to avoid slippage. The frame structure 100 comprises holes to attach the tubular part 131 to the frame structure, e.g. with screws or bolts.

[0168] The tubular part 131 is pivotable relative to the frame structure 100 and can be fixed to the frame structure 100 in a plurality of positions including a first position, see Fig. 8a, post-top entry, and a second position, see Fig. 8b, side-entry. The tubular part 131 may also be fixed to the frame structure in a plurality of intermediate positions. In order to achieve that, the end part 1312 of the tubular part 131 has an arc-shape surface configured to abut a corresponding arc-shape surface of the frame structure, e.g. the recessed portion 134 at the rear side of the frame structure. Additionally, the tubular part 131 comprises a pair of grooves 1310 configured to accept fixation means, e.g. the screws or bolts, that are configured to cooperate with the holes of the frame structure, such that any orientation of the tubular part 131 is possible. Preferably, like for the first embodiment and as illustrated in Fig. 9a, the solar luminaire head is attached to a pole end 132 of the pole such that an angle 0 between a horizontal plane and a longitudinal direction of the solar panel 151 of the luminaire head 10 is above 2 degrees, preferably above 3 degrees. As illustrated in Fig. 9b, the luminaire head 10 of this second embodiment also further comprises clamps 155, configured to clamp the solar panel module 151 to the frame structure 100. Preferably, a peripheral portion 154 of the topside is provided with such clamps extending over the solar panel. The solar panel module 151 may still be fixed with glue on a peripheral portion 154 of the topside surrounding the recessed top portion 150, e.g. in a peripheral groove 153 in which an adhesive, such as a silicon glue, is arranged to adhere the solar panel 151 to the topside. The clamps 155 may be used to clamp the solar panel module 151 while the glue, e.g. the silicon glue, cures. The clamps 155 may then be removed, e.g. for shipping and / or installation. Alternatively, the clamps 155 may be used alone, e.g. without any glue, to clamp and fix the solar panel module to the frame structure 100. The clamps may be fixed to the frame structure by screwing / bolting them to the frame structure 100, for example in holes 156, illustrated in Figs. 6b and 7b.

[0169] Fig. 10 illustrates a perspective view from the bottom side of two embodiments of a luminaire head. On the left, the perspective view illustrates the luminaire head of Fig. 9a. On the right, the perspective view illustrates a luminaire head similar to the one of the left, but further comprising a sensor 127 and an loT module 129. The skilled person will understand that although here an loT module 129 and a sensor 127 are illustrated, any other module, pluggable or not, may be used instead. As illustrated, the sensor 127 and the loT module 129 may be arranged on the cover 116, e.g. arranged into sockets that are arranged on the cover 116. The sockets may be NEMA and / or Zhaga sockets. Alternatively, instead of a socket, the cover may be provided with a cap opening and a removable cap for closing the cap opening such as the one disclosed in patent application WO 2022 / 129193 Al in the name of the applicant, which is included herein by reference.

[0170] Whilst the principles of the invention have been set out above in connection with specific embodiments, it is to be 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.

Claims

CLAIMS1. A solar luminaire head ( 10) comprising a frame structure ( 100) , a solar panel (151) supported by the frame structure (100), an energy storage means (148) and at least one light source (H l), wherein the frame structure (100) has a topside supporting the solar panel (151), wherein the frame structure (100) has a bottom side comprising a cavity (140) in which the energy storage means (148) is received and a further cavity (120) receiving one or more electrical components (128) such as a driver configured for driving said at least one light source (111) or a charge controller for controlling the charging of the energy storage means (148) and the powering of the at least one light source (111) using power of the energy storage means (148), said at least one light source (111) being arranged on the bottom side; wherein the frame structure (100) comprises a thermal insulation layer (160) between the cavity (140) and the solar panel (151), wherein the frame structure (100) is made of plastic.

2. The solar luminaire head (10) of claim 1, wherein the thermal insulation layer (160) is an integral part of the frame structure (100).

3. The solar luminaire head (10) of any one of the previous claims, said further cavity (120) comprising one or more holes (121, 122, 123, ...) for wiring to the one or more electrical components (128).

4. The solar luminaire head (10) of any one of the previous claims, further comprising a mounting part (130) having a fixation end configured to fix the luminaire head (10) to a base support, such as a pole, wherein preferably the fixation end of the mounting part (130) is a post-top fixation end.

5. The solar luminaire head (10) of the previous claim, wherein the mounting part (130) is located between the cavity (140) and the further cavity (120).

6. The solar luminaire head (10) of claim 4 or 5, wherein the frame structure (100) has a base (134) protruding from the bottom side of the luminaire head (10) and the luminaire head (10) further comprises a funnel shaped part (131), preferably a metal part, comprising the fixation end, which is fixed to the base (134) of the frame structure (100), said funnel shaped part (131) being configured to receive a pole end (132);wherein the funnel shaped part (131) and the base (134) form the mounting part (130).

7. The solar luminaire head (10) of the previous claim, wherein the base (134) and the funnel shaped part (131) have a round shape, seen in a cross-section.

8. The solar luminaire head (10) of claim 4, wherein the mounting part (130) comprises a tubular part (131), preferably a metal part, comprising the fixation end, said tubular part (131) being fixed to a circumferential side of the frame structure (100), said fixation end of said tubular part (131) being configured to receive a pole end (132).

9. The solar luminaire head (10) of the previous claim, wherein the tubular part (131) is pivotable and can be fixed to the frame structure in a plurality of positions including a first position and a second position, wherein the first position corresponds to a post-top fixation and the second position, corresponds to a side-entry fixation.

10. The solar luminaire head (10) of claim 8 or 9, wherein the circumferential side of the frame structure is provided with teeth (134a, 134b) and the tubular part (131) comprises an end part (1312) provided with teeth (131a, 131b) configured to cooperate with the teeth (134a, 134b) of the frame structure.

11. The solar luminaire head (10) of any one of the previous claims, wherein the thermal insulation layer (160) is a panel forming at least part of the bottom of the cavity (140).

12. The solar luminaire head (10) of the previous claim, wherein a thickness of the panel is at least 1 mm, preferably at least 2 mm, more preferably at least 2.5mm.

13. The solar luminaire head (10) of any one of the previous claims, wherein the cavity (140) has a bottom wall comprising at least one first support portion (143) configured to support the energy storage means (148) and at least one second bottom portion (142a, 142b), said at least one first support portion (143) being positioned at a first distance of the solar panel (151) and said at least one second support portion (142a, 142b) being positioned at a second distance of the solar panel (151) smaller than the first distance, the at least one second bottom portion (142a, 142b) optionally comprising a strengthening grid (147).

14. The solar luminaire head (10) of the previous claim, wherein the bottom wall forms the thermal insulation layer (160).

15. The solar luminaire head (10) of claim 13 or 14, wherein the topside comprises at least one recessed portion (145) opposite the at least one first support portion (143).

16. The solar luminaire head (10) of any one of claims 13-15, wherein the solar panel (151) is supported on at least one topside portion (146a, 146b) opposite the at least one second bottom portion (142a, 142b) of the cavity (140).

17. The solar luminaire head (10) of any one of the previous claims, wherein the solar panel (151) is glued to the topside.

18. The solar luminaire head (10) of the previous claim, wherein the topside has a peripheral groove (153) in which an adhesive, such as a silicon glue, is arranged to adhere the solar panel (151) to the topside.

19. The solar luminaire head (10) of any one of the previous claims, wherein the topside of the frame structure (100) comprises a recessed top portion (150) underneath the solar panel (151).

20. The solar luminaire head (10) of the previous claim, wherein the solar panel module (151) is fixed, preferably glued, on a peripheral portion (154) of the topside, said peripheral portion (154) surrounding the recessed top portion (150).

21. The solar luminaire head (10) of any one of the previous claims, wherein a peripheral portion (154) of the topside is provided with a plurality of clamps (155) extending over the solar panel, so as to clamp the solar panel to the topside.

22. The solar luminaire head (10) of any one of the previous claims, wherein the topside of the frame structure (100) comprises a strengthening grid (170).

23. The solar luminaire head (10) of claims 19 and 22, wherein the strengthening grid (170) is arranged in the recessed top portion (150).

24. The solar luminaire head (10) of any one of the previous claims, wherein the cavity (140) comprise one or more holes (141) configured for the cabling to the energy storage means (148).

25. The solar luminaire head (10) of claim 19 and any one of the previous claims, wherein the recessed top portion (150) spans substantially the whole length and / or the whole width of the frame structure (100).

26. The solar luminaire head (10) of any one of the previous claims, wherein the one or more electrical components (128) comprise a driver configured to drive said at least one light source (111), wherein the energy storage means (148) is electrically connected to the solar panel (151) and to the driver.

27. The solar luminaire head (10) of any one of the previous claims, wherein the one or more electrical components (128) comprise a charge controller configured to control the charging of the energy storage means (148) and the powering of the at least one light source (111).

28. The solar luminaire head (10) of any one of the previous claims, further comprising a door (146) configured to close the cavity (140).

29. The solar luminaire head (10) of any one of the previous claims, further comprising a further door (126) configured to close the further cavity (120).

30. The solar luminaire head (10) of any one of the previous claims, wherein the at least one light source (111) is arranged in the further cavity (120).

31. The solar luminaire head (10) of the previous claim, further comprising a cover (116), configured to close the further cavity (120), preferably in a sealed manner.

32. The solar luminaire head (10) of the previous claim, wherein the cover (116) is pivotably connected to the frame structure, for providing access to the further cavity (120).

33. The solar luminaire head (10) of any one of the previous claims, further comprising at least one socket, preferably a NEMA and / or Zhaga socket, said socket being preferably configured to receive a sensor module and / or a pluggable controller module.

34. The solar luminaire head (10) of any one of the previous claims, further comprising a sensor (127), preferably a motion sensor.

35. The solar luminaire head (10) of claims 29 and 34, wherein the sensor (127) is arranged on the further door (126).

36. The solar luminaire head (10) of claims 29 and 33, wherein the at least one socket is arranged on the further door (126).

37. The solar luminaire head (10) of claim 31 and 34 wherein the sensor (127) is arranged on the cover (116).

38. The solar luminaire head (10) of claims 31 and 33, wherein the at least one socket is arranged on the cover (116).

39. A luminaire comprising the solar luminaire head (10) of any of the previous claims and a pole, wherein the solar luminaire head (10) is attached to a pole end (132) of the pole such that an angle (0) between a horizontal plane and a longitudinal direction of the solar panel(151) of the luminaire head (10) is above 2 degrees, preferably above 3 degrees, more preferably above 5 degrees.

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