WO2024013397A1

WO2024013397A1 - Modular luminaire head

Info

Publication number: WO2024013397A1
Application number: PCT/EP2023/069727
Authority: WO
Inventors: Csaba HORVÁTH; Péter BUDAVÁRI; Zoltán JANKI; János Péter SZÜGYI
Original assignee: Schreder S.A.
Priority date: 2022-07-15
Filing date: 2023-07-14
Publication date: 2024-01-18
Also published as: NL2032515B1

Abstract

A luminaire head for a luminaire, preferably an outdoor luminaire, said luminaire head comprising a light module provided with a light source, said light module delimiting a light compartment, and a gear module provided with a light source driving means, said gear module delimiting a gear compartment. The light compartment and the gear compartment at least partially overlap. The light compartment comprises a first protruding portion. The gear compartment comprises a second protruding portion configured to at least partially overlap said first protruding portion and to cooperate with the first protruding portion. The first protruding portion is provided with a first channel configured to receive an electrical wire extending between the gear module and the light module. The second protruding portion is provided with a second channel configured to receive said wire and to cooperate with said first channel.

Description

MODULAR LUMINAIRE HEAD

FIELD OF INVENTION

The present invention relates to luminaire heads. Particular embodiments relate to a luminaire head formed with modular components.

BACKGROUND

Commonly used outdoor luminaire heads are formed with a single housing that houses both the light source and the electrical components that power the light source. However, manufacturing limitations often limit the size of such luminaire heads. More specifically, it can be difficult to cast housings that are large enough to accommodate larger volumes of light sources and/or electronics desired and/or required for certain applications.

Moreover, the electrical connections between the light source and other electronics mounted to other parts of the luminaire head housing require more exposed wire routing methods which require more complex assemblies for weatherproofing and aesthetic improvement to conceal aesthetically undesirable features required by the weatherproofing components.

SUMMARY

An object of embodiments of the invention is to provide a luminaire head. More in particular, embodiments of the invention aim at providing a luminaire head formed with separate modules which cooperate with one another, thereby increasing modularity of the luminaire head and enabling maintenance or replacement of only one module, whilst providing protection against ingress of environmental elements into the luminaire head, thereby protecting wires and electronics thereof.

According to a first aspect of the invention, there is provided a luminaire head for a luminaire, preferably an outdoor luminaire. Said luminaire head comprises a light module provided with a light source, said light module delimiting a light compartment, and a gear module provided with a light source driving means, said gear module delimiting a gear compartment. The light compartment and the gear compartment at least partially overlap. The light compartment comprises a first protruding portion. The gear compartment comprises a second protruding portion configured to at least partially overlap said first protruding portion and to cooperate with the first protruding portion. The first protruding portion is provided with a first channel configured to receive an electrical wire extending between the gear module and the light module. The second protruding portion is provided with a second channel configured to receive said wire and to cooperate with said first channel.

Embodiments of the invention are based inter alia on the insight that conventional outdoor luminaire heads are formed with a single housing that houses both the light source and the electrical components that power the light source, which often limits the size of such luminaire heads that can be manufactured using common casting methods. Moreover, more complex assemblies are required for weatherproofing and aesthetic improvement of such conventional outdoor luminaire heads.

In the luminaire head of embodiments of the invention, the light module and the gear module are two separate modules, each defining a compartment for housing the light source or the light source driving means, respectively.

Therefore, whilst individually the light module and the gear module are of a size compatible with existing manufacturing methods, when assembled, they form a luminaire head of size that can accommodate larger volumes of light sources and/or electronics necessary for certain applications. In addition, providing separate modules which cooperate with one another increases modularity of the luminaire head and enables separate maintenance or replacement of only one of the two modules.

Moreover, in the luminaire head of embodiments of the invention, the light compartment and the gear compartment each comprise a protruding portion at least partially overlapping each other and cooperating with each other. Each protruding portion comprises a channel cooperating with each other, each channel being configured to receive said wire between the gear module and the light module.

Therefore, the cooperation between said protruding portions and between said channels on each of the light module and the gear module facilitates alignment of the two modules relative to each other. The cooperating protruding portions and channels may also provide protection against ingress of environmental elements, such as water and dust, into the luminaire head. In addition, the cooperating protruding portions and channels may create an integral channel allowing an electrical connection between the light source of the light module and internal electronics of the gear module, such as the light source driving means. The integral channel formed by the cooperating first and second channels may further improve ingress protection at the wire entry points into the gear module and the light module, thereby protecting the wires and electronics of the luminaire head. The integral channel may furthermore eliminate or at least minimize undesirable aesthetics (e.g., exposed hardware or wiring) without requiring additional cosmetic components or parts to conceal the undesirable aesthetic features.

Preferred embodiments relate to a luminaire head for an outdoor luminaire. By outdoor luminaire, it is meant luminaires which are installed on roads, tunnels, industrial plants, stadiums, airports, harbors, rail stations, campuses, parks, cycle paths, pedestrian paths or in pedestrian zones, for example, and which can be used notably for the lighting of an outdoor area, such as roads and residential areas in the public domain, private parking areas, access roads to private building infrastructures, warehouses, industry halls, etc.

According to a preferred embodiment, the gear module is configured to be attached to the light module in a sealed manner, and a seal is arranged between the first protruding portion and the second protruding portion.

In this way, the light compartment and the gear compartment may form an integral sealed compartment, thereby providing protection against ingress of environmental elements, such as water and dust, into the luminaire head, whilst enabling the detachment of the two modules from each other for maintenance or replacement of only one of the two modules.

According to a preferred embodiment, one of the first protruding portion and the second protruding portion is configured to at least partially surround the other one of the first protruding portion and the second protruding portion.

According to an exemplary embodiment, the seal is arranged around the other one of the first protruding portion and the second protruding portion and is surrounded by the one of the first protruding portion and the second protruding portion.

In this way, the first and second channel form together an integral sealed channel which improves ingress protection of environmental elements, such as water and dust, at the wire entry points into the gear module and the light module, thereby protecting the wires and electronics of the luminaire head.

According to a preferred embodiment, the first protruding portion has a shape configured to match a shape of the second protruding portion. According to a preferred embodiment, the first channel has a shape configured to match a shape of the second channel. In some embodiments, the first channel and the second channel may have a substantially cylindrical shape. In said embodiments, the seal may correspond to an O-ring. It should be clear to the skilled person that other shapes are possible, such as substantially tronconical shapes. In another embodiment, the first channel and the second channel may have a substantially polyhedral shape, such as a rectangle parallelepipedal shape. In said other embodiment, the seal may have a rectangular or square shape.

According to a preferred embodiment, said wire extends between the light source and the light source driving means through the first channel and the second channel.

In this way, the integral channel formed by the cooperating first and second channels may improve ingress protection at the wire entry points into the gear module and the light module, thereby protecting said wire and electronics of the luminaire head, such as the light source and the light source driving means.

According to an exemplary embodiment, the light compartment comprises an upper portion and a lower portion, and the upper portion or the lower portion includes the first protruding portion. The gear compartment comprises an upper portion and a lower portion, and the upper portion or the lower portion includes the second protruding portion, respectively.

Preferably, each of the upper portion and the lower portion of the light compartment may substantially correspond to a half of the volume of the light compartment. Likewise, each of the upper portion and the lower portion of the gear compartment may substantially correspond to a half of the volume of the gear compartment.

It should be noted that the above-mentioned spatial division of the light compartment and of the gear compartment is purely geometrical, in order to spatially define delimited upper and lower portions of said respective compartments. In other words, the upper portion and the lower portion of the light compartment are not intended to be physically separated from one another, e.g., by a separation wall or the like. The same applies to the upper portion and the lower portion of the gear compartment.

According to an exemplary embodiment, the luminaire head extends from a rear side of the luminaire head to a front side of the luminaire head along a substantially horizontal direction. The light compartment is arranged at said front side and the gear compartment is arranged at said rear side. In this way, an improved heat dissipation of the luminaire head may be achieved in comparison with a luminaire head wherein the light compartment and the gear compartment are arranged one above the other along a substantially vertical direction. The heat dissipation can be improved with respect to the light module and/or with respect to the gear module of the luminaire head.

Preferably, the second protruding portion may correspond to a protrusion of one of the upper portion and the lower portion of the gear compartment with respect to the other one of the upper portion and the lower portion of the gear compartment. In other words, the one of the upper portion and the lower portion may protrude from the other one of the upper portion and the lower portion towards a front side of the luminaire head, thereby defining the second protruding portion.

Preferably, the shapes of the upper portion and the lower portion of the gear compartment at the location of the second protruding portion may be such that they define a recessed area outside the gear module where the light module is configured to be arranged.

According to a preferred embodiment, the first protruding portion and the second protruding portion at least partially overlap in a direction perpendicular to a plane formed by the light module, and the first channel and the second channel at least partially extend in said direction. Said direction perpendicular to said plane may be substantially vertical.

Preferably, the light module may be substantially flat, which means that a thickness of the light module in the direction perpendicular to the plane may be substantially smaller than a length and a width of the light module in the plane. Preferably, the first protruding portion may protrude from the light compartment in the direction perpendicular to the plane through an upper surface or a lower surface of the light module.

According to another exemplary embodiment, the light compartment comprises a right portion and a left portion, and the right portion or the left portion includes the first protruding portion. The gear compartment comprises a right portion and a left portion, and the left portion or the right portion includes the second protruding portion, respectively.

Preferably, the second protruding portion may correspond to a protrusion of one of the left portion and the right portion of the gear compartment with respect to the other one of the left portion and the right portion of the gear compartment. In other words, the one of the left portion and the right portion may protrude from the other one of the left portion and the right portion towards a front side of the luminaire head, thereby defining the second protruding portion. Preferably, the shapes of the left portion and the right portion of the gear compartment at the location of the second protruding portion may be such that they define a recessed area outside the gear module where the light module is configured to be arranged.

According to a preferred embodiment, the first protruding portion and the second protruding portion at least partially overlap in a direction parallel to a plane formed by the light module, and the first channel and the second channel at least partially extend in said direction. In other words, said direction parallel to said plane is perpendicular to the above-mentioned direction perpendicular to said plane. Said direction parallel to said plane may be substantially horizontal.

Preferably, said direction parallel to said plane is perpendicular to an axial or longitudinal direction along which the luminaire head extends from a rear side of the luminaire head to a front side of the luminaire head. In other words, a length of the luminaire head may be defined along said axial or longitudinal direction, and a width of the luminaire head may be defined along said direction parallel to said plane, which is perpendicular to said axial or longitudinal direction. Said axial or longitudinal direction may be substantially horizontal.

Preferably, the light module may be substantially flat, which means that a thickness of the light module in the direction perpendicular to the plane may be substantially smaller than a length and a width of the light module in the plane. Preferably, the first protruding portion may protrude from the light compartment in the direction parallel to the plane through a left side surface or a right side surface of the light module.

It should be clear to the skilled person that the above exemplary embodiments may be combined. For example, the light compartment may comprise an upper left portion including the first protruding portion. The gear compartment may comprise an upper right portion including the second protruding portion. The first protruding portion and the second protruding portion may at least partially overlap in a direction perpendicular to a plane formed by the light module, and may at least partially overlap in a direction parallel to said plane. The first channel and the second channel may at least partially extend in the direction perpendicular to the plane and in the direction parallel to the plane. Said direction perpendicular to said plane may be substantially vertical. Said direction parallel to said plane may be substantially horizontal.

According to a preferred embodiment, the light module and the gear module are configured to be releasably attached. In this way, the light compartment and the gear compartment may form an integral sealed compartment, thereby providing protection against ingress of environmental elements, such as water and dust, into the luminaire head, whilst enabling the detachment of the two modules from each other for maintenance or replacement of only one of the two modules.

According to an exemplary embodiment, at least one screw extends through the second protruding portion and is received in a recessed portion of the light module, or vice versa, at least one screw extends through the first protruding portion and is received in a recessed portion of the gear module.

Preferably, the at least one screw may be received in a recessed portion provided to the light module, in particular to an upper side or a lower side of the light housing, and may extend through a through- hole provided to the gear module, in particular to a front side of the gear housing. The recessed portion may be arranged adjacent to the first protruding portion. The through-hole may be arranged adjacent to the second channel. Preferably, the recessed portion may be integrally formed with the light module, in particular with said upper surface or said lower surface.

According to a preferred embodiment, the light module comprises a light housing and a light cover covering the light source. The light cover is configured to be releasably attached to the light housing in a sealed manner.

Preferably, the light cover may comprise a transparent or translucent portion. Optionally, a color filter may be arranged between the light source and the transparent or translucent portion of the light cover. For example, the color filter may be a sheet arranged above the transparent or translucent portion. The color filter is configured to absorb a portion of the light emitted by the light source in specific wavelength ranges so as to change the color of the light emitted by the luminaire head. Preferably, the color filter is accessible by opening the luminaire head, in particular the light module. In that way, the color filter can be easily changed, e.g. when it is desirable to change the color of the emitted light for a special occasion or festivity.

According to a preferred embodiment, the gear module comprises a gear housing and a gear cover covering the light source driving means. The gear cover is configured to be releasably attached to the gear housing in a sealed manner. According to a preferred embodiment, the luminaire head further comprises a fixation assembly configured to connect the luminaire head to a luminaire support, such as a luminaire pole, and to receive the light module and the gear module.

In this way, the fixation of the luminaire head to the luminaire support is facilitated, whilst a robust, stable, and adjustable fixation of the luminaire head is enabled. The fixation assembly may correspond to the fixation assembly described in international publication WO 2022/129155 Al in the name of the applicant, which is included herein by reference.

According to a preferred embodiment, the fixation assembly comprises a front portion at a front side of the luminaire head and configured to receive the light module, and a rear portion at a rear side of the luminaire head and configured to receive the gear module.

In this way, the light module comprising the light source may be arranged at the front side of the luminaire head in order to illuminate its environment in an efficient way, and the gear module comprising the electrical/electronic components may be arranged at the rear side of the luminaire head.

According to an exemplary embodiment, the fixation assembly comprises two side wings. The light module and the gear module are configured to be fixed to the two side wings and to be at least partially arranged between the two side wings.

Preferably, at the front portion of the fixation assembly, the two side wings may be connected via a frame, such as a rectangular or square frame. The frame may be provided with two through-holes at each of the side wings. The light module may be fixed to the two side wings via screws extending through the through-holes of the frame and through corresponding through-holes provided to an upper side of the light housing.

In this way, the light module may be easily detached from the fixation assembly for individual maintenance or replacement.

Preferably, at the rear portion of the fixation assembly, the two side wings may be provided with further through-holes, one for each side wing. The gear module may be fixed to the two side wings via further screws extending through said further through-holes and through corresponding through- holes provided to a rear side of the gear housing. In this way, the gear module may be easily detached from the fixation assembly for individual maintenance or replacement.

According to a preferred embodiment, the fixation assembly is further configured to adjust an orientation of the luminaire head. Exemplary embodiments of different fixation assemblies to adjust an orientation of a luminaire head are disclosed in international publications WO 2022/129155 Al, WO 2022/069368 Al, WO 2020/144191 Al, and WO 2019/229045 Al in the name of the applicant which are included herein by reference.

According to a preferred embodiment, the fixation assembly may be configured to attach the luminaire head to a support, such as a luminaire pole, in a first configuration, wherein an end of the luminaire pole is oriented in a substantially vertical direction, and in a second configuration, wherein an end of the luminaire pole is oriented in a substantially horizontal direction. The first configuration may be referred to as “post-top” configuration of the luminaire head, whereas the second configuration may be referred to as “side-entry” configuration of the luminaire head. The configuration and arrangement of the fixation assembly may be adapted such that the luminaire head may be attached to the luminaire pole in both post-top and side-entry configurations.

In this way, a rotation angle of the luminaire head can be adjusted on site, depending on the site to be illuminated and/or the specific application. Indeed, the light distribution of common outdoor luminaires is not adequately adjustable according to the characteristics of the environment to be lighted, such as the width of a road.

According to a preferred embodiment, a first portion of the luminaire head comprising at least the fixation assembly extends over a distance of at least 25% of a length of the luminaire head, and a second portion of the luminaire head comprising at least the light module is configured to be rotated with respect to said first portion around a rotation axis. The fixation assembly is configured to fix the light module in a plurality of fixing positions. Exemplary embodiments of such a fixation assembly are disclosed in international publication WO 2022/129155 Al in the name of the applicant which is included herein by reference.

In the commonly used outdoor luminaires, the luminaire head angle may be inconvenient to adjust in the case the entire luminaire head, i.e., the luminaire head housing and all its components, may be orientable with respect to the luminaire pole. This may result in orientable luminaire heads that may be significantly heavy, thereby leading to a difficult and unstable mounting thereof on e.g. a luminaire pole for the operator or user on site. Also, the structure of common luminaires that support a heavy orientable luminaire head may be damaged.

By contrast, according to preferred embodiments of the invention, the use of a fixation assembly for connecting the luminaire head to the luminaire support and at the same time for adjusting an orientation of the luminaire head with respect to the luminaire support, facilitates a fixation of the luminaire head to the luminaire support, whilst enabling a robust, stable, and adjustable fixation of the luminaire head in a plurality of fixing positions corresponding to different inclinations of the luminaire head.

According to an exemplary embodiment, the two side wings of the fixation assembly may be provided with a plurality of holes configured to arrange the light module and the gear module at different inclinations and/or to enable different sizes and/or numbers of light compartments and/or gear compartments.

According to a preferred embodiment, the luminaire head may be configured so as to enable different sizes and/or numbers of light compartments and/or gear compartments.

According to an exemplary embodiment, the fixation assembly comprises a first fixation element configured to be attached to the luminaire head and a second fixation element configured to receive and be attached to the luminaire support and to cooperate with the first fixation element.

In this way, the fixation assembly may also play the role of a pole adaptor through the provision of said second fixation element. For example, the second fixation element of the fixation assembly may enable the connection of luminaire poles having different dimensions to the luminaire head, so that the connection between the luminaire head and the luminaire pole is convenient to adjust. Therefore, the installation of the luminaire head can be adequately adjustable according to the characteristics of the pole to be connected, such as its diameter, thereby decreasing the manufacturing costs.

According to an exemplary embodiment, the luminaire head comprises a further light module provided with a further light source, said further light module being arranged adjacent to said light module and delimiting a further light compartment. The further light compartment and the gear compartment at least partially overlap. The further light compartment comprises a further first protruding portion configured to at least partially overlap said second protruding portion and to cooperate with said second protruding portion. The further first protruding portion is provided with a further first channel configured to receive a further electrical wire extending between the gear module and the light module, and the second protruding portion is provided with a further second channel configured to receive said further wire and to cooperate with said further first channel.

According to another exemplary embodiment, the light module is provided with a further light source arranged adjacent to said light source. The light compartment comprises a further first protruding portion configured to at least partially overlap said second protruding portion and to cooperate with said second protruding portion. The further first protruding portion is provided with a further first channel configured to receive a further electrical wire extending between the gear module and the light module, and the second protruding portion is provided with a further second channel configured to receive said further wire and to cooperate with said further first channel.

According to a preferred embodiment, the light source comprises a support, such as a PCB, on which a plurality of light emitting diodes (LEDs) is mounted. The LEDs may be arranged in an array of multiple columns and rows.

According to a preferred embodiment, the gear module comprises any one or more of the following: a light source dimming means, surge protection circuitry, electrostatic discharge protection circuitry, connecting means, a fuse, a metering circuitry, a sensing means, a communication means, a driving and/or control circuitry for any electrical components of the luminaire head.

Surge protection circuitry is provided to absorb energy and protect the driver, typically including a LED driver circuit, and optionally a light source dimming means. The role of an ESD protection circuitry is to reduce the risk of accumulating electrostatic charge to a critical level so as to avoid that ESD happen through an insulation layer and damage semiconductor components such as LEDs.

Optionally, a flux exhauster may be arranged at a side of the luminaire head, around the light source. In addition or alternatively, an inner surface of said side may be painted or coated to fulfill the function of flux exhauster itself. A flux exhauster in the context of the present invention is typically plate-like and has a surface with good reflective properties.

According to a preferred embodiment, the luminaire head is provided with a heat sink including a plurality of cooling fins. A heat sink enables dissipation of heat generated by the light source towards the outside of the luminaire head. Preferably, the light module is provided with a heat sink, e.g. arranged on an upper external surface of the light compartment. Optionally, the gear module may be provided with a further heat sink, e.g. arranged on an upper external surface of the gear compartment. According to a preferred embodiment, one or more optical elements are associated with the light source. The one or more optical elements may comprise a plurality of lens elements associated with the plurality of LEDs, e.g. grouped in a lens plate. However, also other types of optical elements may be additionally or alternatively present, such as reflectors, backlights, prisms, collimators, diffusors, and the like. In the context of the invention, a lens element may include any transmissive optical element that focuses or disperses light by means of refraction. It may also include any one of the following: a reflective portion, a backlight portion, a prismatic portion, a collimator portion, a diffusor portion. For example, a lens element may have a lens portion with a concave or convex surface facing a LED, or more generally a lens portion with a flat or curved surface facing the LED, and optionally a collimator portion integrally formed with said lens portion, said collimator portion being configured for collimating light transmitted through said lens portion. Also, a lens element may be provided with a reflective portion or surface or with a diffusive portion. Exemplary embodiments of such optical elements are disclosed in international publications WO 2020/249684 Al, WO 2020/058282 Al, WO 2021/186058 Al, WO 2020/074229 Al, WO 2022/023441 Al, WO 2019/020366 Al, WO 2020/025427 Al, WO 2019/134875 Al, WO 2020/136202 Al, WO 2020/136200 Al, WO 2020/136205 Al, WO 2020/136203 Al, WO 2020/136204 Al, WO 2020/136197 Al, and WO 2020/136196 Al, in Dutch patent application NL2029021, and in European patent applications EP 3 128 231 Al and EP 2 966 346 Al in the name of the applicant which are included herein by reference.

According to an exemplary embodiment, the light source may comprise a plurality of first light elements such as LEDs and one or more associated first optical elements configured to output a first light beam having a first color temperature according to a first intensity distribution within a first solid angle, and a plurality of second light elements such as LEDs and one or more associated second optical elements configured to output a second light beam having a second color temperature according to a second intensity distribution within a second solid angle. The second intensity distribution may be different from the first intensity distribution. Also, the second color temperature may be different from the first color temperature. Exemplary embodiments of such light sources are disclosed in international publication WO 2021/130275 Al in the name of the applicant which in included herein by reference.

According to an exemplary embodiment, the light source may comprise RGB and/or RGBW and/or RGBA LEDs and associated control circuitry for controlling the color emitted by the light source. Optionally, the light source may comprise a mix of warm white LEDs and cold white LEDs, and/or amber LEDs. Exemplary embodiments of such a light source are disclosed in European patent application EP 3 260 761 Al in the name of the applicant which are included herein by reference. According to embodiments of the invention, the luminaire head may have an overall polygonal shape, such as a square or rectangular shape. Thus, any one or more of the components of the luminaire head may have a polygonal shape. In other embodiments, the luminaire head can have an overall round shape, i.e., any one or more of the components of the luminaire head may have a round shape. Also mixed shapes are possible.

According to an exemplary embodiment, the luminaire head may correspond to an outdoor luminaire head with suitable ingress protection (IP) rating such as IP66 or IP67, or an indoor luminaire head with suitable IP rating such as IP22-IP24 or more.

According to a preferred embodiment, the gear module is provided, preferably on an upper or lower side thereof, with a receptacle for receiving and being electrically connected to an external module. Said wire extends between the light source and the light source driving means and a further wire extends between the light source driving means and the receptacle. The external module may comprise different functionalities, such as control functionalities and/or sensing functionalities and/or communication functionalities.

Providing an external module to a luminaire head has been described in detail in at least PCT applications PCT/EP2021/071616 and PCT/EP2022/050240 in the name of the applicant, and in PCT publications WO 2017/133793 Al, WO 2020/212515 Al, and WO 2021/001544 Al in the name of the applicant, which are included herein by reference. Preferably, the receptacle, also called a socket, is one of a NEMA or Zhaga receptacle, and the external module is a control module or sensing device configured to be plugged in such receptacle. According to an exemplary embodiment, the receptacle may be implemented as described in the above-mentioned PCT publication WO 2017/133793 Al. Optionally, the receptacle and the external module may be configured and/or mounted as described in the above-mentioned PCT publications WO 2020/212515 Al and WO 2021/001544 Al. The receptacle and the control module may be configured to be coupled through a twist-lock mechanism, e.g. as described in ANSI C136.10-2017 standard or ANSI C136.41-2013 standard or Zhaga Interface Specification Standard (Book 18, Edition 1.0, July 2018, https://www.zhagastandard.0rg/data/downloadables/l/O/8/l/book 18.pdf or Book 20: Smart interface between indoor luminaires and sensing/communication modules), which are included herein by reference.

According to a preferred embodiment, the light module and/or the gear module comprises, preferably on an upper side and/or a lower side thereof, a functional unit, and preferably means for driving the functional unit. The functional unit may comprise any one of an image sensing means such as a camera, a communication means such as an antenna, a sensing means such as an air quality sensor or a smoke sensor or a microphone, a loudspeaker, a light projecting means such as a projector, a display, or a laser. The camera may correspond to a closed-circuit television (CCTV) camera. The light projecting means may be configured to project images, logos, photos, texts, and the like. Signals may be sent to and/or from the communication means via a wireless network operating over short- range or long-range communication, e.g. Bluetooth, Wi-Fi, Zigbee, LORA (loT), IR, cellular, or via a wired network, e.g. Ethernet, DALI, DMX, RS485, USB.

Preferably, the gear module comprises the functional unit. Alternatively, the light module may comprise the functional unit.

According to an exemplary embodiment, the functional unit is arranged in or on the gear compartment. For example, a hole may be provided to the gear compartment, and the functional unit may be arranged at least partially within said hole. Optionally, the functional unit may at least partially protrude from the gear compartment towards the outside of the luminaire head. Alternatively, the functional unit may be totally enclosed in the gear compartment.

According to another exemplary embodiment, the functional unit is arranged in or on the light compartment. For example, a hole may be provided to the light compartment, and the functional unit may be arranged at least partially within said hole. Optionally, the functional unit may at least partially protrude from the light compartment towards the outside of the luminaire head. Alternatively, the functional unit may be totally enclosed in the light compartment.

According to an exemplary embodiment, the light source driving means comprises the means for driving the functional unit. According to another exemplary embodiment, the means for driving the functional unit may be different from the light source driving means. Both driving means may be arranged in the gear compartment. Alternatively, the means for driving the functional unit may be arranged in the light compartment.

According to second aspect of the invention, there is provided a functional head. Said functional head comprises a functional module provided with a functional unit, said functional module delimiting a functional compartment, and a gear module provided with a functional unit driving means, said gear module delimiting a gear compartment. The functional compartment and the gear compartment at least partially overlap. The functional compartment comprises a first protruding portion. The gear compartment comprises a second protruding portion configured to at least partially overlap said first protruding portion and to cooperate with the first protruding portion. The first protruding portion is provided with a first channel configured to receive an electrical wire extending between the gear module and the functional module. The second protruding portion is provided with a second channel configured to receive said wire and to cooperate with said first channel.

The functional head may be provided for a luminaire, preferably an outdoor luminaire. Alternatively, the functional head may be provided for a functional system other than a luminaire.

The functional unit may comprise any one of an image sensing means such as a camera, a communication means such as an antenna, a sensing means such as an air quality sensor or a smoke sensor or a microphone, a loudspeaker, a light projecting means such as a projector, a display, or a laser. The camera may correspond to a closed-circuit television (CCTV) camera. The light projecting means may be configured to project images, logos, photos, texts, and the like. Signals may be sent to and/or from the communication means via a wireless network operating over short-range or long- range communication, e.g. Bluetooth, Wi-Fi, Zigbee, LORA (loT), IR, cellular, or via a wired network, e.g. Ethernet, DALI, DMX, RS485, USB.

According to a preferred embodiment, the functional head may be configured so as to enable different sizes and/or numbers of functional compartments and/or gear compartments.

BRIEF DESCRIPTION OF THE FIGURES

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

Figure 1 illustrates an exploded view of an exemplary embodiment of a luminaire head;

Figures 2A and 2B respectively illustrate a top view of two exemplary embodiments of a luminaire head;

Figures 3A and 3B respectively illustrate a cross-sectional view and an enlarged cross-sectional view of an exemplary embodiment of a luminaire head; and

Figure 4 illustrates a perspective view of another exemplary embodiment of a luminaire head.

DESCRIPTION OF THE EMBODIMENTS

Figure 1 illustrates an exploded view of an exemplary embodiment of a luminaire head. As illustrated in Figure 1, there is provided a luminaire head 12 for a luminaire, preferably an outdoor luminaire. The luminaire head 12 comprises a light module 121 provided with a light source 1211, said light module 121 delimiting a light compartment 1210, and a gear module 122 provided with a light source driving means (not shown; see light source driving means 1221 in Figures 2A-2B and 3A), said gear module 122 delimiting a gear compartment 1220. The light compartment 1210 and the gear compartment 1220 at least partially overlap, as best shown in Figures 3A and 3B. The light compartment 1210 comprises a first protruding portion Pl, and the gear compartment 1220 comprises a second protruding portion P2 configured to at least partially overlap said first protruding portion Pl and to cooperate with the first protruding portion Pl, as best shown in Figures 3 A and 3B. The first protruding portion Pl is provided with a first channel Cl, as best shown in Figures 3 A and 3B, configured to receive an electrical wire (not shown; see two wires W in Figures 3 A and 3B) extending between the gear module 122 and the light module 121. The second protruding portion P2 is provided with a second channel C2, as best shown in Figures 3 A and 3B, configured to receive said wire W and to cooperate with said first channel Cl. Said wire W may extend between the light source 1211 and the light source driving means 1221 through the first channel Cl and the second channel C2, as best shown in Figures 3 A and 3B.

According to another embodiment, there may be provided a functional head different from the above- mentioned luminaire head. The functional head may comprise a functional module provided with a functional unit, said functional module delimiting a functional compartment, and a gear module provided with a functional unit driving means, said gear module delimiting a gear compartment. The functional head may be provided for a luminaire, preferably an outdoor luminaire. Alternatively, the functional head may be provided for a functional system other than a luminaire. The functional unit may comprise any one of the devices mentioned above with respect to the second aspect of the invention.

The light source 1211 may comprise a support (not shown; see support 1214 in Figure 3A), such as a PCB, on which a plurality of light emitting diodes (LEDs) 1215 may be mounted (see Figure 3A). The LEDs 1215 may be arranged in an array of multiple columns and rows. The light source 1211 may comprise RGB and/or RGBW and/or RGBA LEDs and associated control circuitry for controlling the color and/or the color temperature emitted by the light source 1211. The number (e.g., 6, 12, 16, 24, 28, 36, 52, etc.) and/or the arrangement (e.g. square(s), (concentric) circle(s), etc.) of the LEDs 1215 on the light support 1214 may vary. Thus, the overall light color and/or light pattern and/or light intensity of the luminaire head 12 may vary. The luminaire head 12 may be provided with a heat sink (not shown) including a plurality of cooling fins. One or more optical elements may be associated with the light source 1211. The one or more optical elements may comprise a plurality of lens elements 1216 (see Figure 3A) associated with the plurality of LEDs 1215, e.g. grouped in a lens plate 1217 (see Figure 3A). Optionally, a flux exhauster may be arranged at a side of the luminaire head 12, around the light source 1211.

The gear module 122 may comprise a gear support (not shown; see gear support 1224 in Figure 2A- 2B and 3A) on which the light source driving means 1221 may be arranged. The gear module 122 may comprise any one or more of the following: a light source dimming means, surge protection circuitry, electrostatic discharge protection circuitry, connecting means, a fuse, a metering circuitry, a sensing means, a communication means, a driving and/or control circuitry for any electrical components of the luminaire head 12.

In addition, the gear module 122 may comprise, preferably on an upper or lower side thereof, a functional unit, and preferably means for driving the functional unit. The functional unit may comprise any one of the devices mentioned above with respect to the second aspect of the invention. The functional unit may be arranged in or on the gear compartment 1220. For example, a hole may be provided to the gear compartment 1220, and the functional unit may be arranged at least partially within said hole. Optionally, the functional unit may at least partially protrude from the gear compartment 1220 towards the outside of the luminaire head 12. Alternatively, the functional unit may be totally enclosed in the gear compartment 1220. In yet another embodiment, the gear module 122 may be provided, preferably on an upper or lower side thereof, with a receptacle, such as the receptacle described above, for receiving and being electrically connected to the functional unit.

Alternatively, the light module may comprise the functional unit. The description above applies to the light module, mutatis mutandis.

The light source driving means 1221 may comprise the means for driving the functional unit. Alternatively, the means for driving the functional unit may be different from the light source driving means 1221. Both driving means may be arranged in the gear compartment 1220. Alternatively, the means for driving the functional unit may be arranged in the light compartment 1210.

As illustrated in Figure 1, the light compartment 1210 may comprise a further first protruding portion Pl’ configured to at least partially overlap said second protruding portion P2 and to cooperate with said second protruding portion P2. The further first protruding portion Pl’ may be provided with a further first channel Cl’ configured to receive a further electrical wire extending between the gear module 122 and the light module 121, and the second protruding portion P2 may be provided with a further second channel C2’ configured to receive said further wire and to cooperate with said further first channel Cl’. The light module 121 may be provided with a further light source 1211’ arranged adjacent to said light source 1211, as illustrated in Figure 2B. Alternatively, the luminaire head 12 may comprise a further light module 121’ provided with a further light source 1211’, as illustrated in Figure 2A. Said further light module 121’ may be arranged adjacent to said light module 121 and may delimit a further light compartment 1210’, as illustrated in Figure 2A.

In another embodiment, the light compartment 1210 may comprise a further first protruding portion Pl’ configured to at least partially overlap a further second protruding portion P2’ and to cooperate with said further second protruding portion P2’. The further first protruding portion Pl’ may be provided with a further first channel Cl’ configured to receive a further electrical wire extending between the gear module 122 and the light module 121, and the further second protruding portion P2’ may be provided with a further second channel C2’ configured to receive said further wire and to cooperate with said further first channel Cl’.

As illustrated in Figure 1, the light compartment 1210 may comprise an upper portion and a lower portion, and the upper portion may include the first protruding portion Pl . Each of the upper portion and the lower portion may substantially correspond to a half of the volume of the light compartment 1210. The gear compartment 1220 may comprise an upper portion and a lower portion, and the upper portion may include the second protruding portion P2. Each of the upper portion and the lower portion may substantially correspond to a half of the volume of the gear compartment 1220. The first protruding portion Pl and the second protruding portion P2 may at least partially overlap in a direction D perpendicular to a plane P formed by the light module 121, and the first channel Cl and the second channel C2 may at least partially extend in the direction D. The light module 121 may be substantially flat, which means that a thickness of the light module 121 in the direction D perpendicular to the plane P may be substantially smaller than a length and a width of the light module 121 in the plane P. The first protruding portion Pl may protrude from the light compartment 1210 in the direction D through an upper surface of the light module 121. The direction D perpendicular to the plane P may be substantially vertical.

It should be noted that the above-mentioned spatial division of the light compartment 1210 and of the gear compartment 1220 is purely geometrical, in order to spatially define delimited upper and lower portions of said respective compartments 1210, 1220. In other words, the upper portion and the lower portion of the light compartment 1210 are not intended to be physically separated from one another, e.g., by a separation wall or the like. The same applies to the upper portion and the lower portion of the gear compartment 1220. As illustrated in Figure 1, the light module 121 may comprise a light housing 1212 and a light cover 1213 covering the light source 1211, and the light cover 1213 may be configured to be releasably attached to the light housing 1212 in a sealed manner. The gear module 122 may comprise a gear housing 1222 and a gear cover 1223 covering the light source driving means 1221, and the gear cover 1223 may be configured to be releasably attached to the gear housing 1222 in a sealed manner. The light cover 1213 may comprise a transparent or translucent portion. Optionally, a color filter may be arranged between the light source 1121 and the transparent or translucent portion of the light cover 1213. For example, the color filter may be a sheet arranged above the transparent or translucent portion. The color filter is configured to absorb a portion of the light emitted by the light source 1211 in specific wavelength ranges so as to change the color of the light emitted by the luminaire head 12. Preferably, the color filter is accessible by opening the luminaire head 12, in particular the light module 121. In that way, the color filter can be easily changed, e.g. when it is desirable to change the color of the emitted light for a special occasion or festivity.

The light housing 1212 and the light cover 1213, and the gear housing 1222 and the gear cover 1223, may define together an overall housing of the luminaire head 12. The overall housing may be sealed (see Figures 3A and 3B). In some embodiments, the luminaire head 12 can have an overall round shape, i.e., any one or more of the components of the luminaire head 12 may have a round shape. In other embodiments, such as in the embodiment of Figure 1, the luminaire head 12 may have an overall polygonal shape, such as a square or rectangular shape. Thus, any one or more of the components of the luminaire head 12 may have a polygonal shape. Also mixed shapes are possible.

The gear module 122 may be configured to be attached to the light module 121 in a sealed manner. A seal (not shown; see seal S in Figures 3A and 3B) may be arranged between the first protruding portion Pl and the second protruding portion P2. In other words, the light compartment 1210 and the gear compartment 1220 may form together a sealed compartment. The light module 121 and the gear module 122 may be releasably attached to each other via two screws SC extending through respective through-holes H2, H2’ provided to the gear module 122, in particular to a front side of the gear housing 1222, and received in respective recessed portions Hl, Hl’ provided to the light module 121, in particular to an upper side of the light housing 1212. More details about the recessed portion Hl and the through-hole H2 can be found in Figures 3 A and 3B. The recessed portions Hl, HF may be arranged adjacent to the protruding portions Pl, Pl’, respectively. The through-holes H2, H2’ may be arranged adjacent to the channels C2, C2’, respectively. As illustrated in Figure 1, the luminaire head 12 may extend from a rear side of the luminaire head 12 to a front side of the luminaire head 12 along a substantially horizontal direction. The light compartment 1210 may be arranged at said front side and the gear compartment 1220 may be arranged at said rear side.

As illustrated in Figure 1, the luminaire head 12 may further comprise a fixation assembly 10 configured to connect the luminaire head 12 to a luminaire support, such as a luminaire pole 11, and to receive the light module 121 and the gear module 122. The fixation assembly 10 may correspond to the fixation assembly described in international publication WO 2022/129155 Al in the name of the applicant, which is included herein by reference. The fixation assembly 10 may comprise a front portion 10’ at a front side of the luminaire head 12 and configured to receive the light module 121, and a rear portion 10” at a rear side of the luminaire head 12 and configured to receive the gear module 122.

The fixation assembly 10 may comprise two side wings 101, 102, and the light module 121 and the gear module 122 may be configured to be fixed to the two side wings 101, 102 and to be at least partially arranged between the two side wings 101, 102. At the front portion 10’ of the fixation assembly 10, the two side wings 101, 102 may be connected via a frame 103, such as a rectangular or square frame 103 as illustrated in Figure 1. The frame 103 may be provided with two through- holes at each of the side wings 101, 102. The light module 101 may be fixed to the two side wings 101 , 102 via screws extending through the through -holes of the frame 103 and through corresponding through-holes provided to an upper side of the light housing 1212. Different sizes of the light module 121 may be fixed to the fixation assembly 10, as illustrated in Figure 1. In addition, different sizes of the gear module 122 may be fixed to the fixation assembly 10, although not illustrated in Figure 1. At the rear portion 10” of the fixation assembly 10, the two side wings 101, 102 may be provided with further through-holes, one for each side wing 101, 102. The gear module 122 may be fixed to the two side wings 101, 102 via further screws extending through said further through-holes and through corresponding through-holes provided to a rear side of the gear housing 1222. The gear cover 1223 may be releasably attached to the gear housing 122 via two hinges Hi. A slit 104 having a shape matching the shape of said hinges Hi may be provided to each of the two side wings 101, 102, such that the gear module 122 is supported by the two side wings 101, 102, as illustrated in Figure 1.

As illustrated in Figure 1, the fixation assembly 10 may be further configured to adjust an orientation of the luminaire head 12 with respect to the luminaire pole 11 around a rotation axis A. The fixation assembly 10 may comprise a first fixation element 100 configured to be attached to the luminaire head 12 and a second fixation element 200 configured to receive and be attached to the luminaire pole 11 and to cooperate with the first fixation element 100. The second fixation element 200 may play the role of an adaptor for the luminaire pole 11, as the second fixation element 200 may enable the connection of luminaire poles 11 having different dimensions, e.g. different diameters, to the luminaire head 12. The second fixation element 200 may be configured to be fastened to the first fixation element 100 in a first configuration (see Figure 1) and in a second configuration (not illustrated). In the embodiment of Figure 1, an end of the luminaire pole 11 and the second fixation element 200 are oriented in a substantially vertical direction in the first configuration. In other embodiments, an end of the luminaire pole 11 and the second fixation element 200 may be oriented in a substantially horizontal direction in the second configuration. The first configuration may be referred to as “post-top” configuration of the luminaire head 12, whereas the second configuration may be referred to as “side-entry” configuration of the luminaire head 12. The configuration and arrangement of the first fixation element 100 may be adapted in order to cooperate with the second fixation element 200 such that the luminaire head 12 may be attached to the luminaire pole 11 in both post-top and side-entry configurations.

As illustrated in Figure 1, the first fixation element 100 may comprise different fixation portions 100a, 100b, 100c. A first fixation portion 100a may be configured to be fixed to the rear portion 10” of the fixation assembly 10, between the two side wings 101, 102. A cover 105 may be provided to the fixation assembly 10 to cover the first fixation portion 100a. A second fixation portion 100b may comprise two plates arranged on either side of the first fixation portion 100a. Each plate of the second fixation portion 100b may be arranged between each side of the first fixation portion 100a and one of the side wings 101, 102. A third fixation portion 100c may comprise two further plates configured to cooperate with the second fixation element 200 and adjust an orientation of the luminaire head 12 with respect to the luminaire pole 11. Each further plate of the third fixation portion 100c may be arranged between one of the two plates of the second fixation portion 100b and one of the two side wings 101, 102. Two through-holes are provided to each of the two side wings 101, 102, to each side of the first fixation portion 100a, to each plate of the second fixation portion 100b, and to each further plate of the third fixation portion 100c, respectively. The respective through-holes of the two side wings 101, 102, and of the first, second, and third fixation portions 100a, 100b, 100c may be aligned such that two screws may extend through each series of aligned through-holes, in order to connect the luminaire head 12 to the luminaire pole 11. A cable C extending between the luminaire pole 11 and the luminaire head 12, in particular the gear module 122, may extend through the second fixation element 200 and the first fixation portion 100a to enter a rear side of the gear module 122. The fixation assembly 10 may be configured to fix the luminaire head 12 in a plurality of fixing positions. The fixation assembly 10 may have a first end nearest to the luminaire pole 11 and a second end opposite said first end. The rotation axis A and the plurality of fixing positions may be arranged at said first end. Alternatively, the rotation axis A and the plurality of fixing positions may be arranged as described in the above-mentioned international publication WO 2022/129155 Al. The rotation axis A and the plurality of fixing positions may be configured to adjust a position of the luminaire head 12 relative to the luminaire pole 11 over an angle of 15°, preferably over an angle of 30°. Two adjacent positions of the plurality of fixing positions may be configured to adjust a position of the luminaire head 12 over an angle between 2° and 15°. For example, the three fixing positions may correspond to angular orientations of the luminaire head 12 ranging from -15° to +15° by steps of 15°. In another example, if more than three fixing positions are provided, e.g. seven fixing positions, the seven fixing positions may correspond to angular orientations of the luminaire head 12 ranging from -15° to +15° by steps of 5°. Accordingly, the outer side of the fixation assembly 10, or the outer side of the second fixation element 200 as illustrated in Figure 1 , may be provided with visual indications of the possible angular orientations of the luminaire head 12 relative to the luminaire pole 11.

As illustrated in Figure 1, the gear module 122 may be provided on an upper side thereof with a receptacle 300 for receiving and being electrically connected to an external module. The above- mentioned wire W may extend between the light source 1211 and the light source driving means 1221 and a further wire may extend between the light source driving means 1221 and the receptacle 300. The external module may comprise different functionalities, such as control functionalities and/or sensing functionalities and/or communication functionalities. Preferably, the receptacle, also called a socket, is one of a NEMA or Zhaga receptacle, and further preferably the external module is a control module or sensing device configured to be plugged in such receptacle. The receptacle and the control module may be configured to be coupled through a twist-lock mechanism, e.g. as described in the above-mentioned ANSI C136.10-2017 standard or ANSI C136.41-2013 standard or Zhaga Interface Specification Standard.

With respect to control functionalities, the external module may correspond to a luminaire controller configured to send control signals to electrical/electronic components inside the gear module 122, so as to control the driving of the light module 121 and to modify the lighting characteristics of the light source 1211 (light intensity such as dimming, light color, light color temperature, lighting pattern, lighting distribution, light flashing, etc.). With respect to sensing functionalities, the external module may correspond to a sensor configured to sense an environment of the luminaire head 12, such as an ambient light sensor, a passive infrared (PIR) sensor, a presence or occupancy sensor, a movement sensor, an air quality sensor, a smoke sensor, a microphone, etc. With respect to communication functionalities, the external module may correspond to an antenna configured to send and/or receive signals. It should be clear to the skilled person that said sensor and/or said antenna may be configured to communicate with electrical/electronic components inside the gear module 122 by sending and/or receiving signals.

Figures 2A and 2B respectively illustrate a top view of two exemplary embodiments of a luminaire head. The above description with respect to Figure 1 applies to the two embodiments of Figures 2A and 2B, and will thus not be repeated in the following. The gear cover 1223 (see Figure 1) of the gear module 122 has not been illustrated in Figures 2 A and 2B for the sake of clarity, in order to show the interior of the gear module 122 which comprises the light source driving means 1221.

As illustrated in Figure 2 A, the luminaire head 12 may comprise a further light module 121’ provided with a further light source 1211’. Said further light module 121’ may be arranged adjacent to said light module 121 and may delimit a further light compartment 1210’. The further light compartment 1210’ and the gear compartment 1220 may at least partially overlap. The further light compartment 1210’ may comprise a further first protruding portion Pl ’ configured to at least partially overlap said second protruding portion P2 and to cooperate with said second protruding portion P2. The further first protruding portion Pl ’ may be provided with a further first channel Cl ’ configured to receive a further electrical wire extending between the gear module 122 and the light module 121, and the second protruding portion P2 may be provided with a further second channel C2’ configured to receive said further wire and to cooperate with said further first channel Cl’.

Alternatively, as illustrated in Figure 2B, the light module 121 may be provided with a further light source 1211’ arranged adjacent to said light source 1211. The light compartment 1210 may comprise a further first protruding portion Pl’ configured to at least partially overlap said second protruding portion P2 and to cooperate with said second protruding portion P2. The further first protruding portion P 1 ’ may be provided with a further first channel C 1 ’ configured to receive a further electrical wire extending between the gear module 122 and the light module 121, and the second protruding portion P2 may be provided with a further second channel C2’ configured to receive said further wire and to cooperate with said further first channel Cl’.

Figures 3A and 3B respectively illustrate a cross-sectional view and an enlarged cross-sectional view of an exemplary embodiment of a luminaire head. The above description with respect to Figure 1 applies to the embodiment of Figures 3 A and 3B, and will thus not be repeated in details in the following. As illustrated in Figure 3 A, there is provided a luminaire head 12 for a luminaire, preferably an outdoor luminaire. The luminaire head 12 comprises a light module 121 provided with a light source 1211, said light module 121 delimiting a light compartment 1210, and a gear module 122 provided with a light source driving means 1221, said gear module 122 delimiting a gear compartment 1220. The light compartment 1210 and the gear compartment 1220 at least partially overlap. The light compartment 1210 comprises a first protruding portion Pl, and the gear compartment 1220 comprises a second protruding portion P2 configured to at least partially overlap said first protruding portion Pl and to cooperate with the first protruding portion Pl. The first protruding portion Pl is provided with a first channel Cl configured to receive a wire W extending between the gear module 122 and the light module 121. The second protruding portion P2 is provided with a second channel C2 configured to receive said wire W and to cooperate with said first channel Cl. Said wire W may extend between the light source 1211 and the light source driving means 1221 through the first channel Cl and the second channel C2.

The light source 1211 may comprise a support 1214, such as a PCB, on which a plurality of light emitting diodes (LEDs) 1215 may be mounted. The above description related to the LEDs 1215 of Figure 1 applies to Figure 3 A, and will thus not be repeated in the following. The luminaire head 12 may be provided with a heat sink (not shown) including a plurality of cooling fins. One or more optical elements may be associated with the light source 1211. The one or more optical elements may comprise a plurality of lens elements 1216 associated with the plurality of LEDs 1215, e.g. grouped in a lens plate 1217. Optionally, a flux exhauster may be arranged at a side of the luminaire head 12, around the light source 1211. The gear module 122 may comprise any one or more of the following: a light source dimming means, surge protection circuitry, electrostatic discharge protection circuitry, connecting means, a fuse, a metering circuitry, a driving and/or control circuitry for any electrical components of the luminaire head 12. Optionally, a light shielding structure comprising a plurality of reflective barriers for anti-glare purposes may be provided to the light source 1211, and preferably associated with the plurality of lens elements 1216, more preferably arranged over the lens plate 1217, as disclosed in international publications WO 2020/249684 Al and WO 2020/058282 Al in the name of the applicant which are included herein by reference.

In the embodiment of Figure 3 A, the light compartment 1210 comprises an upper portion and a lower portion, and the upper portion includes the first protruding portion Pl . Each of the upper portion and the lower portion may substantially correspond to a half of the volume of the light compartment 1210. The gear compartment 1220 comprises an upper portion and a lower portion, and the upper portion includes the second protruding portion P2. Each of the upper portion and the lower portion may substantially correspond to a half of the volume of the gear compartment 1220. The second protruding portion P2 may correspond to a protrusion of the upper portion of the gear compartment 1220 with respect to the lower portion of the gear compartment 1220. In other words, the upper portion may protrude from the lower portion towards a front side of the luminaire head 12, thereby defining the second protruding portion P2. The shapes of the upper portion and the lower portion of the gear compartment 1220 at the location of the second protruding portion P2 may be such that they define a recessed area outside the gear module 122 where the light module 121 is configured to be arranged.

In the embodiment of Figure 3 A, the first protruding portion Pl and the second protruding portion P2 at least partially overlap in a direction D perpendicular to a plane P formed by the light module 121, and the first channel Cl and the second channel C2 extend in the direction D. The light module 121 may be substantially flat, which means that a thickness of the light module 121 in the direction D perpendicular to the plane P may be substantially smaller than a length and a width of the light module 121 in the plane P. The first protruding portion Pl may protrude from the light compartment 1210 in the direction D through an upper surface of the light module 121. The direction D perpendicular to the plane P may be substantially vertical.

In another embodiment, the lower portion of the light compartment 1210 may include the first protruding portion Pl, and the lower portion of the gear compartment 1220 may include the second protruding portion P2. The first protruding portion Pl and the second protruding portion P2 may at least partially overlap in the above-mentioned direction D, and the first channel Cl and the second channel C2 may extend in the direction D. As in the embodiment of Figure 3A, the light module 121 may be substantially flat. Contrary to the embodiment of Figure 3 A, the first protruding portion Pl may protrude from the light compartment 1210 in the direction D through a lower surface of the light module 121.

In yet other embodiments, such as the embodiment illustrated in Figure 4, the light compartment 1210 may comprise a right portion and a left portion, and the right portion or the left portion may include the first protruding portion Pl . Each of the right portion and the left portion may substantially correspond to a half of the volume of the light compartment 1210. The gear compartment 1220 may comprise a right portion and a left portion, and the left portion or the right portion may include the second protruding portion P2, respectively. Each of the right portion and the left portion may substantially correspond to a half of the volume of the gear compartment 1220. The first protruding portion Pl and the second protruding portion P2 may at least partially overlap in a direction D’ parallel to a plane P formed by the light module 121, and the first channel Cl and the second channel C2 may at least partially extend in said direction D’. In other words, said direction D’ is perpendicular to the above-mentioned direction D. The direction D’ parallel to the plane P may be substantially horizontal. Preferably, said direction D’ is perpendicular to an axial or longitudinal direction along which the luminaire head 12 extends from a rear side of the luminaire head 12 to a front side of the luminaire head 12. In other words, a length of the luminaire head 12 may be defined along said axial or longitudinal direction, and a width of the luminaire head 12 may be defined along said direction D’ perpendicular to said axial or longitudinal direction. Said axial or longitudinal direction may be substantially horizontal. As in the embodiment of Figure 3 A, in the embodiment of Figure 4 the light module 121 may be substantially flat. Contrary to the embodiment of Figure 3 A, the first protruding portion Pl may protrude from the light compartment 1210 in said direction D’ through a left side surface or a right side surface of the light module 121.

In the embodiment of Figure 4, the second protruding portion P2 may correspond to a protrusion of one of the left portion and the right portion of the gear compartment 1220 with respect to the other one of the left portion and the right portion of the gear compartment 1220. In other words, the one of the left portion and the right portion may protrude from the other one of the left potion and the right portion towards a front side of the luminaire head 12, thereby defining the second protruding portion P2. The shapes of the left portion and the right portion of the gear compartment 1220 at the location of the second protruding portion P2 may be such that they define a recessed area outside the gear module 122 where the light module 121 is configured to be arranged.

It should be clear to the skilled person that the above embodiments of Figures 3A and 4 may be combined. For example, the light compartment 1210 may comprise an upper left portion including the first protruding portion Pl. The gear compartment 1220 may comprise an upper right portion including the second protruding portion P2. The first protruding portion Pl and the second protruding portion P2 may at least partially overlap in a direction D perpendicular to a plane P formed by the light module 121, and may at least partially overlap in a direction D’ parallel to said plane P. The first channel Cl and the second channel C2 may at least partially extend in the direction D perpendicular to the plane P and in the direction D’ parallel to the plane P. The direction D perpendicular to the plane P may be substantially vertical. The direction D’ parallel to the plane P may be substantially horizontal.

As illustrated in Figures 3 A and 3B, the gear module 122 may be configured to be attached to the light module 121 in a sealed manner, and a seal S may be arranged between the first protruding portion Pl and the second protruding portion P2. In other words, the light compartment 1210 and the gear compartment 1220 may form together a sealed compartment. In the embodiment of Figures 3 A and 3B, the second protruding portion P2 is configured to at least partially surround the first protruding portion Pl. The seal S is arranged around the first protruding portion Pl and is surrounded by the second protruding portion P2. In another embodiment, the first protruding portion Pl may be configured to at least partially surround the second protruding portion P2. The seal S may be arranged around the second protruding portion P2 and may be surrounded by the first protruding portion Pl. The seal S may correspond to an O-ring, as illustrated in Figures 3 A and 3B.

As illustrated in Figures 3A and 3B, the light module 121 and the gear module 122 may be configured to be releasably attached. At least one screw SC may extend through the second protruding portion P2 and may be received in a recessed portion Hl of the light module 121. The at least one screw SC may be received in a recessed portion Hl provided to an upper side of the light housing 1212, and may extend through a through-hole H2 provided to the gear module 122, in particular to a front side of the gear housing 1222. The recessed portion Hl may be arranged adjacent to the first protruding portion Pl. The through-hole H2 may be arranged adjacent to the second channel C2.

As illustrated in Figures 3 A and 3B, the first protruding portion Pl may have a shape configured to match a shape of the second protruding portion P2. The first channel Cl may have a shape configured to match a shape of the second channel C2. In the embodiment of Figures 3 A and 3B, the first channel Cl and the second channel C2 have a substantially cylindrical shape. It should be clear to the skilled person that other shapes are possible, such as substantially tronconical shapes. In another embodiment, the first channel Cl and the second channel C2 may have a substantially polyhedral shape, such as a rectangle parallelepipedal shape. In said embodiment, the seal S may have a rectangular or square shape.

In the embodiment of Figures 3 A and 3B, the first channel Cl has a first substantially cylindrical portion having a first diameter DI, and a second substantially cylindrical portion having a second diameter D2 different from the first diameter DI. The second diameter D2 is smaller than the first diameter DI. Likewise, the second channel C2 has a third substantially cylindrical portion having a third diameter D3, and a fourth substantially cylindrical portion having a fourth diameter D4 different from the third diameter D3. The fourth diameter D4 is larger than the third diameter D3. The fourth portion of the second channel C2 is configured to surround the second portion of the first channel Cl, which means that the fourth diameter D4 is larger than the second diameter D2. The thickness of the seal S is thus substantially equal to half of a difference between the fourth diameter D4 and the second diameter D2. The fourth portion of the second channel C2 may serve as a guiding and/or aligning and/or centering means for the first channel Cl, in particular for the second portion of the first channel Cl. As illustrated in Figures 3A and 3B, an edge E of the second protruding portion P2, surrounding the fourth portion and defining the second channel C2, may abut an outer surface of the first protruding portion Pl. The edge E may protrude from a lower surface of the second protruding portion P2. The seal S may be arranged between an outer surface of the first protruding portion Pl and an inner surface of the edge E. An outer surface of the first protruding portion Pl may be stepped. The seal S may be sandwiched between an outer vertical surface of the first protruding portion Pl, an outer horizontal surface of the first protruding portion Pl, and the inner surface of the edge E. The first protruding portion Pl may be integrally formed with the light module 121, in particular with an upper surface of the light housing 1212. The recessed portion Hl, arranged adjacent to the protruding portion Pl, may be integrally formed with the light module 121, in particular with said upper surface. The edge E may be integrally formed with the gear module 122, in particular with said lower surface of the second protruding portion P2.

The light module 121 may comprise a light housing 1212 and a light cover (not shown in Figures 3 A and 3B) covering the light source 1211, and the light cover may be configured to be releasably attached to the light housing 1212 in a sealed manner. The gear module 122 may comprise a gear housing 1222 and a gear cover 1223 covering the light source driving means 1221, and the gear cover 1223 may be configured to be releasably attached to the gear housing 1222 in a sealed manner. The light cover may comprise a transparent or translucent portion. Optionally, a color filter may be arranged between the light source 1121 and the transparent or translucent portion of the light cover.

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

1. A luminaire head (12) for a luminaire, preferably an outdoor luminaire, said luminaire head (12) comprising: a light module (121) provided with a light source (1211), said light module (121) delimiting a light compartment (1210); and a gear module (122) provided with a light source driving means (1221), said gear module (122) delimiting a gear compartment (1220); wherein the light compartment (1210) and the gear compartment (1220) at least partially overlap; wherein the light compartment (1210) comprises a first protruding portion (Pl); wherein the gear compartment (1220) comprises a second protruding portion (P2) configured to at least partially overlap said first protruding portion (Pl) and to cooperate with the first protruding portion (Pl); wherein the first protruding portion (Pl) is provided with a first channel (Cl) configured to receive an electrical wire (W) extending between the gear module (122) and the light module (121); wherein the second protruding portion (P2) is provided with a second channel (C2) configured to receive said wire (W) and to cooperate with said first channel (Cl).

2. The luminaire head of claim 1, wherein the gear module (122) is configured to be attached to the light module (121) in a sealed manner, and wherein a seal (S) is arranged between the first protruding portion (Pl) and the second protruding portion (P2).

3. The luminaire head of claim 2, wherein one of the first protruding portion (Pl) and the second protruding portion (P2) is configured to at least partially surround the other one of the first protruding portion (Pl) and the second protruding portion (P2).

4. The luminaire head of claim 3, wherein the seal (S) is arranged around the other one of the first protruding portion (Pl) and the second protruding portion (P2) and is surrounded by the one of the first protruding portion (Pl) and the second protruding portion (P2).

5. The luminaire head of any one of the previous claims, wherein the first protruding portion (Pl) has a shape configured to match a shape of the second protruding portion (P2).

6. The luminaire head of any one of the previous claims, wherein the first channel (Cl) has a shape configured to match a shape of the second channel (C2).

7. The luminaire head of any one of the previous claims, wherein said wire (W) extends between the light source (1211) and the light source driving means (1221) through the first channel (Cl) and the second channel (C2).

8. The luminaire head of any one of the previous claims, wherein the light compartment (1210) comprises an upper portion and a lower portion, wherein the upper portion or the lower portion includes the first protruding portion (Pl); and wherein the gear compartment (1220) comprises an upper portion and a lower portion, wherein the upper portion or the lower portion includes the second protruding portion (P2), respectively.

9. The luminaire head of any one of the previous claims, wherein the luminaire head (12) extends from a rear side of the luminaire head (12) to a front side of the luminaire head (12) along a substantially horizontal direction, and wherein the light compartment (1210) is arranged at said front side and the gear compartment (1220) is arranged at said rear side.

10. The luminaire head of any one of the previous claims, wherein the gear compartment (1220) comprises an upper portion and a lower portion, and wherein the second protruding portion (P2) corresponds to a protrusion of one of the upper portion and the lower portion with respect to the other one of the upper portion and the lower portion.

11. The luminaire head of any one of the previous claims, wherein the gear compartment (1220) comprises an upper portion and a lower portion, and wherein one of the upper portion and the lower portion protrudes from the other one of the upper portion and the lower portion towards a front side of the luminaire head (12), thereby defining the second protruding portion (P2).

12. The luminaire head of any one of the previous claims, wherein the gear compartment (1220) comprises an upper portion and a lower portion, and wherein shapes of the upper portion and the lower portion at the location of the second protruding portion (P2) are such that they define a recessed area outside the gear module (122) where the light module (121) is configured to be arranged. The luminaire head of any one of the previous claims, wherein the first protruding portion (Pl) and the second protruding portion (P2) at least partially overlap in a direction (D) perpendicular to a plane (P) formed by the light module (121), and wherein the first channel (Cl) and the second channel (C2) at least partially extend in said direction (D). The luminaire head of any one of the previous claims, wherein the light compartment (1210) comprises a right portion and a left portion, wherein the right portion or the left portion includes the first protruding portion (Pl); and wherein the gear compartment (1220) comprises a right portion and a left portion, wherein the left portion or the right portion includes the second protruding portion (P2), respectively. The luminaire head of any one of the previous claims, wherein the first protruding portion (Pl) and the second protruding portion (P2) at least partially overlap in a direction (D’) parallel to a plane (P) formed by the light module (121), and wherein the first channel (Cl) and the second channel (C2) at least partially extend in said direction (D’). The luminaire head of any one of the previous claims, wherein the light module (121) and the gear module (122) are configured to be releasably attached. The luminaire head of claim 16, wherein at least one screw (SC) extends through the second protruding portion (P2) and is received in a recessed portion (Hl) of the light module (121), or wherein at least one screw extends through the first protruding portion (Pl) and is received in a recessed portion of the gear module (122). The luminaire head of any one of the previous claims, wherein the light module (121) comprises a light housing (1212) and a light cover (1213) covering the light source (1211), wherein the light cover (1213) is configured to be releasably attached to the light housing

(1212) in a sealed manner. The luminaire head of any one of the previous claims, wherein the gear module (122) comprises a gear housing (1222) and a gear cover (1223) covering the light source driving means (1221), wherein the gear cover (1223) is configured to be releasably attached to the gear housing (1222) in a sealed manner.

20. The luminaire head of any one of the previous claims, further comprising a fixation assembly (10) configured to connect the luminaire head (12) to a luminaire support, such as a luminaire pole (11), and to receive the light module (121) and the gear module (122).

21. The luminaire head of claim 20, wherein the fixation assembly (10) comprises a front portion (10’) at a front side of the luminaire head (12) and configured to receive the light module (121), and a rear portion (10”) at a rear side of the luminaire head (12) and configured to receive the gear module (122).

22. The luminaire head of claim 20 or 21, wherein the fixation assembly (10) comprises two side wings (101, 102), wherein the light module (121) and the gear module (122) are configured to be fixed to the two side wings (101, 102) and to be at least partially arranged between the two side wings (101, 102).

23. The luminaire head of any one of claims 20-22, wherein the fixation assembly (10) is further configured to adjust an orientation of the luminaire head (12).

24. The luminaire head of any one of claims 20-23, wherein the fixation assembly (10) comprises a first fixation element (100) configured to be attached to the luminaire head (12) and a second fixation element (200) configured to receive and be attached to the luminaire support and to cooperate with the first fixation element (100).

25. The luminaire head of any one of the previous claims, comprising a further light module (121’) provided with a further light source (1211’), said further light module (121’) being arranged adjacent to said light module (121) and delimiting a further light compartment (1210’); wherein the further light compartment (1210’) and the gear compartment (1220) at least partially overlap; wherein the further light compartment (1210’) comprises a further first protruding portion (Pl’) configured to at least partially overlap said second protruding portion (P2) and to cooperate with said second protruding portion (P2); wherein the further first protruding portion (Pl’) is provided with a further first channel (Cl ’) configured to receive a further electrical wire extending between the gear module (122) and the light module (121), and the second protruding portion (P2) is provided with a further second channel (C2’) configured to receive said further wire and to cooperate with said further first channel (Cl’). The luminaire head of any one of the previous claims, wherein the light module (121) is provided with a further light source (1211’) arranged adjacent to said light source (1211); wherein the light compartment (1210) comprises a further first protruding portion (Pl’) configured to at least partially overlap said second protruding portion (P2) and to cooperate with said second protruding portion (P2); wherein the further first protruding portion (Pl’) is provided with a further first channel (Cl’) configured to receive a further electrical wire extending between the gear module (122) and the light module (121), and the second protruding portion (P2) is provided with a further second channel (C2’) configured to receive said further wire and to cooperate with said further first channel (Cl’). The luminaire head of any one of the previous claims, wherein the light source (1211) comprises a support (1214), such as a PCB, on which a plurality of light emitting diodes is mounted. The luminaire head of any one of the previous claims, wherein the gear module (122) comprises any one or more of the following: a light source dimming means, surge protection circuitry, electrostatic discharge protection circuitry, connecting means, a fuse, a metering circuitry, a sensing means, a communication means, a driving and/or control circuitry for any electrical components of the luminaire head (12). The luminaire head of any one of the previous claims, wherein the gear module (122) is provided, preferably on an upper side thereof, with a receptacle (300) for receiving and being electrically connected to an external module, wherein said wire (W) extends between the light source (1211) and the light source driving means (1221) and a further wire extends between the light source driving means (1221) and the receptacle (300). The luminaire head of any one of the previous claims, wherein the light module (121) and/or the gear module (122) comprises a functional unit arranged in or on the light compartment (1210) and/or in or on the gear compartment (1220), respectively, preferably on an upper side thereof, and preferably further comprises means for driving the functional unit. The luminaire head of claim 30, wherein the functional unit comprises any one of an image sensing means such as a camera, a communication means such as an antenna, a sensing means such as an air quality sensor or a smoke sensor or a microphone, a loudspeaker, a light projecting means such as a projector, a display, or a laser.