ES3009916T3 - Luminaire with receptacle socket assembly - Google Patents

Abstract

Luminaire comprising a receptacle assembly (1000) mounted in an opening (610) of a wall (600) and comprising: a receptacle (100) in the opening with a front side (101) located on an external side of the wall, a rear side (102) located on an internal side of the wall and a peripheral side (103) between the front and rear sides, and housing a plurality of receptacle contacts (110, 120), said front side being configured to receive external contacts from an external module (500); at least one peripheral body (200) around the peripheral side and coupled to the wall such that the peripheral body does not rotate with respect to the wall; wherein the peripheral body and the peripheral side of the receptacle are coupled such that the receptacle does not rotate with respect to said peripheral body. (Automatic translation with Google Translate, no legal value)

Description

DESCRIPTION

Luminaire with socket assembly

Field of the invention

The field of the invention relates to luminaires, more particularly to outdoor luminaires, comprising socket assemblies, and to socket assemblies that can be mounted on a wall of the luminaire.

Background

Lighting equipment for roadways, parking lots, and other outdoor areas typically uses external modules with twist-lock plugs containing various control blocks and/or sensors, e.g., a light sensor to detect the ambient light level to automatically control the lighting equipment's light sources. To ensure uniformity across the lighting industry, electrical receptacles for receiving such external modules are primarily manufactured according to specific standards, such as the Zhaga Interface Specification Standard (Book 18, Edition 1.0, July 2018, see https://www.zhagastandard.org/data/downloadables/1/0/8/1/book_18.pdf) or standards approved by the American National Standards Institute, Inc. (ANSI), such as ANSI's NEMA C136.10-2017 or ANSI's NEMA C136.41-2013. Such receptacles are typically mounted in an opening in the lighting equipment enclosure, e.g., a recessed mounting bracket. e.g., on an overhead wall or a bottom wall, and are electrically connected to various components of the lighting equipment. The receptacle has a connection interface located on an external side of the housing, so that an external module can be plugged into the receptacle to provide control and/or communication and/or other functionality for the lighting equipment.

An external module typically comprises at least three standard pins or plug contacts that insert into corresponding openings in the receptacle. In some cases, the external module may be significantly larger than the receptacle. This is the case, for example, when the receptacle and external module meet the requirements of the Zhaga interface specification standard. The external module fits around a front portion of the Zhaga receptacle and is locked in place by a locking interface between a circumferential portion of the receptacle's front portion and an inner circumferential portion of the external module. In this way, the external module can be inserted and rotated to lock the module in place. This can be done without tools, allowing luminaires to be retrofitted simply and quickly. Since the external module is significantly larger than the receptacle, the force exerted can be quite high and cause the external module to over-rotate, damaging the receptacle and/or causing it to become misaligned. Especially for street luminaires, such misalignment is frequently not tolerated. This effect can also be observed with NEMA plug assemblies, but is typically less significant, since a NEMA external module can typically have dimensions similar to the dimensions of the NEMA receptacle.

Additionally, when mounting a Zhaga or NEMA plug assembly in a fixture wall opening, a nut is typically used. Overtightening the nut can cause a similar effect of damage and/or misalignment.

Document WO 2011/138618 A1 describes a plug comprising a plurality of contacts arranged for electrical connection to a socket, the electrical connection between the plug and the socket being made by inserting the plug into the socket and subsequently rotating the plug and the socket relative to each other about a common axis, at least a first electrical contact having a contact face in a plane substantially parallel to the common axis and at least a second electrical contact having a contact face in a plane substantially perpendicular to the common axis. Each of said contact faces is arranged to make electrical contact with the plug.

US-4,477,143 A describes a twist-lock type electrical receptacle adapted to receive a photoelectric controller which can be assembled into a luminaire without turning the luminaire housing over and can be oriented in the field without the use of tools. The receptacle is retained in an opening through the housing by a snap ring having tabs on the inner edge which engage flanges on the body portion of the receptacle. The snap ring has leaf springs which flexibly hold the receptacle against the housing. Upon lifting the receptacle, the key pins and recesses of the receptacle and housing disengage and the receptacle can be rotated to a different orientation.

US-903,768 A describes a receptacle for a signal lamp consisting of a body portion carrying lamp receiving terminals and a threaded locking ring, with a locking ring for rotatably locking the receptacle to the signal plate.

Summary

The object of embodiments of the invention is to provide a luminaire with a socket assembly that is more robust and that limits or prevents damage and/or misalignment when an external module is arranged in the receptacle and/or when the socket assembly is fixed in an opening in a wall of the luminaire using a nut.

According to one aspect of the invention, there is provided a luminaire comprising a receptacle assembly mounted in an opening in a wall of the luminaire. The receptacle assembly comprises a receptacle and at least one peripheral body. The receptacle extends into the opening. The receptacle has a front side for being located on an external side of the wall, a rear side for being located on an internal side of the wall, and a peripheral side between the front side and the rear side. The receptacle houses a plurality of receptacle contacts, and the front side is configured to receive external contacts of an external module such that the external contacts contact the receptacle contacts. The at least one peripheral body is disposed around the peripheral side of the receptacle and is coupled to the wall such that the at least one peripheral body cannot rotate relative to the wall. The at least one peripheral body and the peripheral side of the receptacle are coupled such that the receptacle cannot rotate relative to the at least one peripheral body.

By providing at least one peripheral body and coupling the at least one peripheral body in a non-rotatable manner relative to the wall, on the one hand, and in a non-rotatable manner relative to the receptacle, on the other hand, any rotation of the receptacle during the installation of an external module and/or when tightening a nut can be limited or prevented. In fact, by adding the at least one peripheral body, the torque exerted on the receptacle can be transferred in an improved manner to the wall. Furthermore, by using at least one peripheral body, the use of screws to secure the receptacle can be avoided, thereby avoiding sealing problems.

According to an illustrative embodiment, the at least one peripheral body is provided with at least one projection configured to extend into at least one corresponding recess in the wall, preferably at least two projections extending into at least two corresponding recesses, more preferably at least three projections extending into at least three corresponding recesses in the wall. Alternatively or additionally, the wall may be provided with at least one projection configured to extend into at least one corresponding recess in the at least one peripheral body, preferably at least two projections extending into at least two corresponding recesses, more preferably at least three projections extending into at least three corresponding recesses in the at least one peripheral body.

In this way, the coupling between at least one peripheral body and the wall is achieved in a simple and robust manner. By having at least two or three protrusions, the forces can be distributed more effectively.

Preferably, the number of protrusions and/or the shape of the one or more protrusions and/or the position of the one or more protrusions is such that only one position is possible and such that correct placement and alignment can be easily achieved. For example, one or more protrusions and recesses can be positioned to allow alignment with a road direction.

The at least one corresponding recess in the wall may be part of the opening in the wall, i.e., the at least one recess may be adjacent to or border a central through-hole. Alternatively, the at least one corresponding recess may correspond to at least one separate recess or opening in the wall. The recess may be a through-hole through the wall or it may be a blind hole. The at least one protrusion of the at least one peripheral body may be a bent portion, preferably extending on an outer circumference of the at least one peripheral body. Alternatively, it may be an integrally molded portion of the at least one peripheral body or a portion coupled with the at least one peripheral body.

Similarly, the at least one corresponding recess in the at least one peripheral body may be adjacent to or border an inner or outer circumferential surface of the at least one peripheral body. Alternatively, the at least one corresponding recess in the at least one peripheral body may correspond to at least one opening between the inner and outer circumferential surfaces of the at least one peripheral body. The recess in the at least one peripheral body may be a through hole or a blind hole.

The at least one protrusion of the wall may be a bent portion, preferably extending along an inner circumference of the opening in the wall. Alternatively, it may be a portion integrally molded into the wall or a portion coupled with the wall.

According to an illustrative embodiment, the at least one peripheral body and the peripheral side of the receptacle are shaped such that the receptacle cannot rotate relative to the at least one peripheral body.

By choosing a suitable shape, the receptacle and the at least one peripheral body can be coupled to each other in a substantially non-rotatable manner.

According to a preferred embodiment, the peripheral side of the receptacle is provided with at least one recess and/or projection, and the at least one peripheral body is provided with at least one inner projection and/or corresponding inner recess configured to cooperate with the at least one recess and/or projection of the receptacle. More preferably, the peripheral side of the receptacle is provided with at least one recess, and the at least one peripheral body is provided with at least one corresponding inner projection configured to cooperate with the at least one recess of the receptacle.

In one illustrative embodiment, the receptacle is configured to receive the external module via a twist-lock mechanism. To this end, a portion of the peripheral side of the receptacle may be provided with locking elements, and the external module may be provided with a corresponding internal surface with corresponding locking elements. For example, the twist-lock mechanism may be a mechanical twist-lock mechanism as defined in the Zhaga Interface Specification Standard (Book 18, Edition 1.0, July 2018). Alternatively, the twist-lock mechanism is integrated into the interface between the receptacle contacts and the external contacts, for example, as prescribed by the NEMA standard. Any other type of twist-lock mechanism may also be contemplated.

According to an illustrative embodiment, the at least one peripheral body comprises a ring-shaped body. It is noted that the ring-shaped body need not be circular and may have a non-circular outer periphery and/or a non-circular inner periphery. The ring shape refers to the fact that the body extends continuously around the peripheral side of the receptacle. A ring-shaped body has the advantage that the receptacle can be completely surrounded by the ring-shaped body in a robust and simple manner. In another illustrative embodiment, the at least one peripheral body may comprise multiple peripheral segments, for example, annular portions. In yet another illustrative embodiment, the at least one peripheral body may be a partial ring, e.g., a ring describing less than 360°, for example, 270°. When multiple peripheral bodies are provided, it is preferred that together they completely surround the receptacle, so that a closed plug is obtained in the assembled state.

According to the invention, the socket assembly further comprises a nut, and the peripheral side of the receptacle is provided, near the rear side, with a thread that cooperates with the nut to secure the receptacle in the opening. The at least one peripheral body is then inserted between the wall and the nut. In another possible embodiment not claimed, the at least one peripheral body may be included between a front portion of the receptacle and the wall, preferably with seals on both sides of the at least one peripheral body.

According to an illustrative embodiment, the at least one peripheral body has a front surface in contact with the wall, a rear surface, and an inner and outer circumferential surface between the rear surface and the front surface.

The inner circumferential surface of the at least one peripheral body may be integrally formed with at least one inner projection configured to cooperate with at least one recess on the peripheral side of the receptacle. Alternatively or additionally, the inner circumferential surface of the at least one peripheral body may be integrally formed with at least one inner recess configured to cooperate with at least one projection on the peripheral side of the receptacle.

The front surface of the at least one peripheral body may be integrally formed with the at least one projection and/or recess configured to extend into the at least one corresponding recess and/or projection in the wall.

The back surface may be in contact with the nut.

According to an illustrative embodiment, the inner circumferential surface is provided with a flat portion, and a portion of the peripheral side is provided with a corresponding flat portion. The inner circumferential surface may further be provided with a substantially cylindrical portion, and a portion of the peripheral side may be provided with a corresponding substantially cylindrical portion.

In this way, the shape of the inner circumferential surface and the receptacle is such that rotation of the at least one peripheral body relative to the receptacle is limited or prevented. By adding one or more additional inner projections on the inner circumferential wall, as explained above, this non-rotational coupling can be further enhanced.

According to the invention, the opening is provided with a flat portion and a portion of the peripheral side is provided with a corresponding flat portion. The opening may further be provided with a substantially cylindrical portion and a portion of the peripheral side may be provided with a corresponding substantially cylindrical portion. Alternatively, the opening may be a circular opening. Preferably, the opening in the wall may surround the inner circumferential surface of the at least one peripheral body, such that the receptacle only contacts the at least one peripheral body, and not the wall. In that way, a force exerted on the receptacle when an external module is put in place or when the nut is tightened can be directly transferred to the at least one peripheral body, limiting or avoiding the risk of damaging an edge of the opening in the wall.

According to an illustrative embodiment, the at least one peripheral body is made of a material that is stronger than the receptacle material. Preferably, the at least one peripheral body is made of metal, e.g., aluminum, but it may also be made of or comprise a plastic material.

According to an illustrative embodiment, the plurality of receptacle contacts comprises a plurality of first receptacle contacts and, optionally, one or more second receptacle contacts.

In an illustrative embodiment, viewed in a radial direction about a central axis of the receptacle, the plurality of first contacts of the receptacle are positioned farther from the central axis than the one or more second contacts of the receptacle.

In a first embodiment, the one or more second receptacle contacts may be used to carry one or more power signals for powering components of the external module, and the plurality of first receptacle contacts may be used to carry data or control signals, typically low-current and low-voltage signals. Optionally, one of the plurality of first receptacle contacts and/or one of the one or more second receptacle contacts may be used to carry both a power signal and a data or control signal.

In another embodiment, no second receptacle contacts are provided, and the plurality of first receptacle contacts comprise both one or more contacts for carrying a power signal and one or more contacts for carrying a data or control signal, wherein optionally, the one or more contacts may be used to carry both power and data/control signals. In such an embodiment, typically at least three first receptacle contacts are provided, of which two carry power signals and one a data or control signal. In yet another embodiment without second receptacle contacts, the plurality of first receptacle contacts comprise only receptacle contacts for carrying power supply signals, e.g., two DC terminal contacts, of which one may be a ground terminal.

In another embodiment, the one or more second receptacle contacts may be used to carry one or more data or control signals, and the plurality of first receptacle contacts may be used to carry power signals. The one or more second receptacle contacts may then be, e.g., a center pin terminal surrounded by a cylindrical contact terminal (e.g., an RCA connector).

One skilled in the art understands that other combinations are possible, and that one or more receptacle contacts may be used to carry both a power signal and a control/data signal and/or that control messages may be included in a power signal.

Preferably, the plurality of first receptacle contacts extend substantially along a first cylindrical surface around the central axis. When more than one second receptacle contact is present, the two or more second receptacle contacts may extend substantially along a second cylindrical surface around the central axis. However, it is also possible to have two second receptacle contacts in the form of a central pin and a surrounding cylindrical contact (e.g., an RCA connector) arranged centrally on the front side of the receptacle. Also, if only one second receptacle contact is provided, it may be arranged centrally. Alternatively, it may be arranged externally to the first cylindrical surface, further from the central axis of the receptacle. If no second receptacles are present, typically at least three first receptacle contacts are present, more preferably, four receptacle contacts.

In an illustrative embodiment, front contact portions of the plurality of first receptacle contacts are accessible through openings in the front side of the receptacle and extend proximate the front side of the receptacle. For example, the front contact portions of the plurality of receptacle contacts meet the requirements of the aforementioned Zhaga standard.

In another illustrative embodiment, front contact portions of the plurality of first receptacle contacts extend flush with the front side of the receptacle. For example, the front contact portions of the plurality of receptacle contacts meet the requirements of ANSI C136.41-2013 or ANSI C136.10-2017.

According to the invention, the receptacle has a housing comprising a substantially cylindrical front portion on the front side of the receptacle and a partially cylindrical rear portion projecting rearwardly on the rear side of the substantially cylindrical front portion, wherein the diameter of the front portion is larger than the diameter of the rear portion. In that manner, the rear portion can be inserted through an opening in a housing, while the front portion bears against a wall portion around the opening. The rear portion may be partially cylindrical.

According to the invention, the partially cylindrical rear portion is provided with a flat wall portion extending in an axial direction of the receptacle, said flat wall portion corresponding to a similar flat wall portion of the at least one peripheral body.

According to an illustrative embodiment, the socket assembly further comprises a gasket inserted between the nut and the front portion, and preferably between the wall and the front portion of the receptacle. This provides a suitable seal between the external wall surface and the front portion, preventing the ingress of dirt and/or water into the luminaire.

According to an illustrative embodiment, the receptacle comprises an RFID tag, preferably on the front face of the receptacle. The inclusion of an RFID tag in a receptacle has been described in detail in PCT publication WO2017/133793 in the name of the applicant.

It is also noted that it is possible to provide one or more functionalities in the receptacle itself, such as a sensor, a communication circuit system, a control circuit system, a protection circuit system (e.g., a power stabilizer or a fuse), an actuator, a display unit, an antenna unit, a speaker unit, an air cleaning unit such as a UV light source, etc.

The external module may comprise any one or more of the following: a sensor (e.g., a light sensor, a motion sensor, a passive infrared sensor, a sound sensor, a pollution sensor such as a CO2, NOx, and SOx sensor, a smoke sensor, a biological threat sensor, a thermal sensor, an image capture sensor such as a camera, a humidity sensor, a visibility sensor, a temperature sensor, a radar sensor, a voice recorder, etc.), a communication circuitry, a control circuitry, a protection circuitry (e.g., a power stabilizer or a fuse), an actuator, etc. More generally, the external module may comprise any component that needs to be powered, any component involved in transmitting and/or receiving signals, any component that completes the circuitry within the luminaire head, such as a protection circuitry, etc.

It is also noted that the external module can be configured to receive an additional external module. In other words, a stack of interconnected external modules can be arranged in the enclosure, with some functionality included in a first external module and other functionality in a second external module. In this way, the system is given an additional degree of modularity.

Optionally, an alignment projection or recess may be provided on the front side of the receptacle, said alignment recess or protrusion being configured to cooperate with an alignment projection or recess of the external module. The alignment recess may be a central hole for receiving a central pin of the external module. In another variant, an alignment mark may be provided on both the receptacle and the external module to allow an operator to align the external module with the receptacle. Additionally or alternatively, an orientation indicator may be provided to the receptacle and/or the external module and/or the at least one peripheral body. The orientation indicator may indicate, e.g., a north direction. The latter may be advantageous when the receptacle and/or the external module and/or the at least one peripheral body can be positioned in a plurality of positions with respect to the wall, and when it is desirable to orient the receptacle and/or the external module in a given direction. For example, when the enclosure and/or external module comprises a light sensor, an orientation indicator may be useful.

According to an illustrative embodiment, the plurality of receptacle contacts comprises at least one receptacle contact for carrying a power signal and/or at least one receptacle contact for carrying a data or control signal and/or at least one receptacle contact for carrying both a power signal and a data or control signal. In an illustrative embodiment, the plurality of receptacle contacts comprises at least three receptacle contacts for carrying power signals and/or at least two receptacle contacts for carrying data or control signals. In another illustrative embodiment, the plurality of receptacle contacts comprises one receptacle contact for carrying a power signal, one receptacle contact for carrying a power signal as well as a data/control signal, and/or at least two receptacle contacts for carrying data or control signals.

It is noted that the at least two power signals may comprise DC and/or AC signals. For example, a DC power supply signal may be transferred via the receptacle, wherein a first DC terminal contact is provided for a positive DC voltage (e.g., a 24 V DC signal) and a second DC terminal contact is provided for a ground connection (wherein optionally the ground connection may also be used as a grounding terminal for a data or control signal). Such an embodiment may conform to the aforementioned Zhaga standard. Alternatively or additionally, an AC power supply signal (e.g., a 230 V AC signal for powering a luminaire controller) may be transferred via the receptacle, wherein first, second, and third AC terminal contacts are provided for a three-phase AC signal. Such an embodiment may conform to the aforementioned NEMA standards.

In a preferred embodiment, each receptacle contact is an integrally formed metal contact, i.e., the receptacle contact is formed as an integral metal body.

The luminaire may further comprise a housing with a wall on which the socket assembly is mounted, a light source disposed in said housing, and electrical components, such as light-actuating components and/or light-control components, disposed in said housing. The receptacle is disposed in an opening in the wall of the housing with its rear side facing an interior space of the housing, and the receptacle contacts are connected to the electrical components within the housing.

The wall may be, for example, a top wall or a bottom wall of the housing. In an illustrative embodiment, the housing may comprise an upper cover with an outwardly projecting portion, and the wall may be formed on the outwardly projecting portion of the upper cover. An example of such a housing can be found in Dutch patent application NL2023432 in the name of the applicant.

As described in this application, optionally the receptacle and/or the outwardly protruding portion may be surrounded by a support fixed to the upper cover of the housing.

According to yet another aspect of the invention, a receptacle assembly is provided for use in an embodiment of a luminaire described above. The receptacle assembly may have any one or more of the features described above.

Brief description of the figures

The accompanying drawings are used to illustrate presently preferred, non-limiting, illustrative embodiments of devices of the present invention. The foregoing and other advantages, features, and objects of the invention will become more apparent, and the invention will be better understood, based on the following detailed description when read in conjunction with the accompanying drawings, in which:

Figure 1 is a schematic view of an illustrative embodiment of an assembled receptacle assembly mounted in an opening in a wall;

Figure 2 is a schematic exploded view of the illustrative embodiment of Figure 1;

Figure 3 is a schematic perspective view of the peripheral body of the illustrative embodiment of Figure 1; Figure 4 is a schematic top view of the opening in the wall of the illustrative embodiment of Figure 1; Figure 5 is a schematic perspective view of another embodiment of a peripheral body;

Figure 6 is a schematic exploded view of another illustrative embodiment of a receptacle assembly for mounting in an opening in a wall;

Figure 7 is a schematic exploded view of another illustrative embodiment of a receptacle assembly for mounting in an opening in a wall;

Figure 8 is a schematic perspective view of an illustrative embodiment of a receptacle; and

Figure 9 is a schematic view of a luminaire housing with a wall on which a socket assembly is arranged, further showing an external module that plugs into the receptacle;

Figure 10 is a schematic perspective view of an embodiment of a wall-mounted socket assembly and an external module to be plugged into the receptacle;

Figures 11A, 11B and 11C show, respectively, a perspective view, a top view and another top view with an enlarged portion of an illustrative embodiment of a luminaire arranged along a road; and Figures 12A, 12B and 12C are schematic perspective views of an illustrative embodiment of a wall of a housing with an opening for mounting a socket assembly, of a housing with a peripheral body disposed above the opening and of an assembled socket assembly mounted in the opening in the wall.

Description of the achievements

Figures 1 and 2 illustrate an exemplary embodiment of a wall-mounted receptacle assembly 600 of a lighting fixture, typically an outdoor luminaire. The receptacle assembly 1000 comprises a receptacle 100, a ring-shaped peripheral body 200, a nut 300 for securing the receptacle 100 in an opening of a housing, and optionally a gasket (not shown) inserted between the receptacle 100 and the nut 300. The peripheral body 200 is inserted between the wall 600 and the nut 300.

Outdoor luminaires are luminaires that are installed on roads, tunnels, industrial plants, stadiums, airports, ports, railway stations, campuses, parks, cycle paths, pedestrian paths or in pedestrian zones, for example, and which can be used notably for the illumination of an outdoor area, such as road and residential areas in the public domain, private parking areas and access roads to private building infrastructure, etc.

Lighting equipment can also be indoor lighting, such as industrial lighting, e.g., lighting equipment used in warehouses, industrial buildings, etc.

The receptacle 100 has a front side 101 to be located on an external side of the wall 600, a rear side 102 to be located on an internal side of the wall 600 and a peripheral side 103 between the front side 101 and the rear side 102. The front side 101 is configured to receive contacts of an external plug-in module (not shown). The receptacle 100 may comprise a substantially cylindrical front portion 181 on the front side 101 of the receptacle 100 and a partially cylindrical rear portion 182 on the rear side 102 of the receptacle 100. The front portion 181 has larger dimensions than the rear portion 182. The rear portion 182 is intended to be arranged through an opening 610 of a wall 600 of a housing of a luminaire, while the front portion 181 bears against the wall 600 of the housing. The partially cylindrical rear portion 182 may be provided with a thread 170 for cooperating with a corresponding thread 370 of the nut 300.

The receptacle 100 houses a plurality of receptacle contacts (not shown in Figures 1 and 2 but visible in Figure 8, see reference numeral 110) and the front side 101 is configured to receive external contacts from an external module (see also Figures 8-10) such that the external contacts contact the receptacle contacts. The peripheral body 200 is disposed around the peripheral side 103 of the receptacle and is coupled to the wall 600 such that the peripheral body 200 cannot rotate relative to the wall 600. Furthermore, the peripheral body 200 and the peripheral side 103 of the receptacle 100 are coupled such that the receptacle 100 cannot rotate relative to the peripheral body 200.

In the embodiment of Figures 1 and 2, the peripheral body 200 is provided with three projections 220 configured to extend into three recesses 620 in the wall 600. The recesses 620 are through holes that form part of the opening 610. However, in other variants, the recesses 620 may be blind holes or through holes at a distance from the opening 610. As shown in detail in Figures 2 and 3, the peripheral body 200 has a front surface 201 in contact with the wall 600, a rear surface 202 in contact with the nut 300 and an inner and outer circumferential surface 203, 204 between the rear surface 202 and the front surface 201. The front surface 201 is integrally formed with the three projections 220 that are configured to extend into the three recesses 620 of the wall 600. 600, see also Figure 4, which shows a top view of the wall. The peripheral body 200 may be a metal body, and the projections 220 may be bent portions. Preferably, the bent portions are provided on the outer circumferential surface 203.

The peripheral body 200 and the peripheral side 103 of the receptacle 100 are formed such that the receptacle 100 cannot rotate relative to the peripheral body 200. This can be achieved, on the one hand, by providing the inner circumferential surface 203 with a flat portion 290, wherein the peripheral side 103 of the receptacle is provided with a corresponding flat portion 190. The inner circumferential surface 203 may further be provided with a substantially cylindrical portion 285 and the peripheral side 103 may be provided with a corresponding substantially cylindrical portion 185. Similarly, the opening 610 in the wall 600 may be provided with a flat portion 690 corresponding to the flat portion 190 of the receptacle 100 and with a substantially cylindrical portion 985 corresponding to the substantially cylindrical portion 185 of the receptacle 100. Preferably, the opening 610 is slightly larger than the opening in the peripheral body 200 and surrounds the inner circumferential surface 203 of the at least one peripheral body 200, so that the receptacle 100 only comes into contact with the peripheral body 200, and not with the edge of the opening 610 in the wall. In that way, a force exerted on the receptacle 100 can be transferred directly to the peripheral body 200, limiting or avoiding the risk of damaging an edge of the opening 610 in the wall. On the other hand, the inner circumferential surface 203 of the peripheral body 200 is integrally formed with an inner projection 230 configured to cooperate with a recess 130 in the peripheral side 103 of the receptacle 100. The presence of the inner projection 230, in combination with the coupling of the peripheral body 200 to the wall 600, will prevent the flat portion 190 from being deformed by exerting a torque on the receptacle 100. By providing the peripheral body 200 and coupling the peripheral body 200 non-rotatably to the wall 600, on the one hand, and non-rotatably to the receptacle 100, on the other hand, rotation of the receptacle 100 during assembly can be limited or prevented. In fact, by adding the peripheral body 200, the torque exerted on the receptacle 100 can be improved to be transferred to the wall 600.

The receptacle is configured to receive the external module by means of a twist-lock mechanism comprising locking element 186 on the peripheral side 103 of the front portion of the receptacle 100. The external module may be provided with an internal surface corresponding with corresponding locking elements. For example, the twist-lock mechanism may be a mechanical twist-lock mechanism as defined in the Zhaga interface specification standard (Book 18, Edition 1.0, July 2018). In another embodiment illustrated in Figure 10, the twist-lock mechanism is integrated into the interface between the receptacle contacts 120 and the external contacts 520, e.g., as prescribed by the NEMA standard.

The nut 300 may be provided with a grooved surface or a surface with a certain surface roughness, said surface being intended to be in contact with the peripheral body 200. This will make it possible to obtain an improved grip of the nut on the peripheral body 200. Similarly, the peripheral body 200 may be provided with a certain surface roughness, said surface being intended to be in contact with the wall 600.

The receptacle 100 may be formed in one or two or more parts. For example, the receptacle 100 may comprise a central body portion and a flange portion that mate with each other. To secure the central body portion to the flange portion, the central body portion may be provided with a central hole and the flange portion may be provided with a screw-receiving portion, such that a screw can extend through the central hole into the screw-receiving portion to secure the central body portion to the flange portion. Examples of possible containers are described in PCT applications WO 2020/099393 and PCT/EP2020/060751 in the name of the applicant, which are incorporated herein by reference.

Figure 5 illustrates a variant of the peripheral body 200 of Figure 3. In the variant of Figure 5, four projections are provided instead of three projections 220. The person skilled in the art understands that the number of projections may vary depending on the required coupling between the wall and the peripheral body. The projections 220 have a length 1 extending in a peripheral direction, a width w extending in a radial direction and a height h extending perpendicularly on the front surface 201. The length 1 may be, e.g., between 1 mm and 10 mm, the width w may be, e.g., between 1 mm and 6 mm, and the height h may be, e.g., between 2 mm and 10 mm. The outer diameter do of the peripheral body 200 may be, e.g., between 25 mm and 60 mm, and the inner diameter di of the peripheral body 200 may be, e.g., between 20 mm and 45 mm. More specifically, the inner diameter di may be adapted to conform to the Zhaga standard, which defines the dimensions of the receptacle. In other embodiments, the inner diameter may be adapted to conform to other receptacle standards, such as the NEMA standard. In the illustrated example, the protrusions are substantially cuboid in shape, but those skilled in the art understand that other shapes are possible, for example, a cylindrical or prismatic shape. The protrusions 220 may have identical or different shapes and/or dimensions. The aforementioned dimensions may also be used in the other embodiments described in the text.

Figure 6 illustrates another exemplary embodiment of a receptacle assembly 1000 for mounting in an opening 610 in a wall 600. The receptacle assembly 1000 is similar to the assembly of Figures 1 and 2 in that it comprises a receptacle 100, two peripheral bodies 200a, 200b, and a nut 300 for securing the receptacle 100 in the opening 610 of a housing. The peripheral bodies 200a, 200b are inserted between the wall 600 and the nut 300. Instead of using one peripheral body, the embodiment of Figure 6 uses two peripheral bodies 200a, 200b which together surround the opening 610 in the wall 600. Preferably, the two peripheral bodies 200a, 200b completely surround the opening 610 to form a closed ring, but there may be a space between opposite end portions of the peripheral bodies 200a, 200b.

Each peripheral body 200a, 200b has a front surface 201a, 201b in contact with the wall 600, a rear surface 202a, 202b in contact with the nut 300 and an inner and outer circumferential surface 203a, 203b, 204a, 204b between the rear surface and the front surface. Each peripheral body 200a, 200b is provided with a through hole 250a, 250b aligned with corresponding recesses 620a, 620b in the wall 600. Coupling between the wall 600 and each peripheral body 200a, 200b is achieved via coupling elements 750a, 750b extending through the through holes 250a, 250b into the recesses 620a, 620b.

The peripheral bodies 200a, 200b and the peripheral side 103 of the receptacle 100 are shaped such that the receptacle 100 cannot rotate relative to the peripheral bodies 200a, 200b. This can be achieved, on the one hand, by providing the inner circumferential surface 203a, 203b of each inner circumferential peripheral body 200a, 200b with a flat portion 290a, 290b, wherein the peripheral side 103 of the receptacle is provided with a corresponding flat portion 190. The inner circumferential surface 203a, 203b may further be provided with a substantially cylindrical portion 285a, 285b and the peripheral side 103 may be provided with a corresponding substantially cylindrical portion 185. On the other hand, the inner circumferential surface 203a, 203b of each peripheral body 200a, 200b is provided with a recess 240a, 240b configured to cooperate with a recess 130a, 130b on the peripheral side 103 of the receptacle 100 by inserting locking bars 740a, 740b. Also, the wall 600 is then provided with corresponding recesses 640a, 640b through which the locking bars 740a, 740b extend. The presence of the inner recesses 240a, 240b and the locking bars 740a, 740b in combination with the engagement of the peripheral body 200 to the wall 600 will prevent the flat portion 190 from deforming upon exerting a torque on the receptacle 100. Alternatively or additionally, the circumferential surface 203a, 203b of each peripheral body 200a, 200b may be provided with a projection configured to cooperate with a recess in the peripheral side 103 of the receptacle 100, or vice versa.

Figure 7 illustrates another exemplary embodiment of a receptacle assembly 1000 for mounting in an opening 610 in a wall 600. The receptacle assembly 1000 is similar to the assembly of Figure 6 in that it comprises a receptacle 100, two peripheral bodies 200a, 200b, and a nut 300 for securing the receptacle 100 in the opening 610 of a housing. The peripheral bodies 200a, 200b are inserted between the wall 600 and the nut 300. The embodiment of Figure 7 uses two peripheral bodies 200a, 200b which together surround the opening 610 in the wall 600. Preferably, the two peripheral bodies 200a, 200b completely surround the opening 610 to form a closed circumference, but there may be a space between the opposite end portions of the peripheral bodies 200a, 200b.

Each peripheral body 200a, 200b has a front surface 201a, 201b in contact with the wall 600, a rear surface 202a, 202b in contact with the nut 300, and an inner and outer circumferential surface 203a, 203b, 204a, 204b between the rear surface and the front surface. Each peripheral body 200a, 200b is provided on its front surface 201a, 201b with projections 220a, 220b configured to fit into corresponding recesses 620a, 620b in the wall 600. As illustrated, the projections 220a of the first peripheral body 200a may be different from the projections 220b of the second peripheral body 200b. More generally, in embodiments of the invention, one or more projections and/or recesses of different sizes and/or shapes may be combined, and the one or more projections and/or recesses may be distributed uniformly along the circumference or may be provided in an irregular and/or asymmetrical manner.

The peripheral bodies 200a, 200b and the peripheral side 103 of the receptacle 100 are formed such that the receptacle 100 cannot rotate relative to the peripheral bodies 200a, 200b. This is achieved, on the one hand, by providing the inner circumferential surface 203a of the peripheral body 200a with a flat portion 290a, wherein the peripheral side 103 of the receptacle is provided with a corresponding flat portion 190. The inner circumferential surface 203b of the peripheral body 200b is further provided with a substantially cylindrical portion 285b and the peripheral side 103 may be provided with a corresponding substantially cylindrical portion 185. On the other hand, the inner circumferential surface 203b of the peripheral body 200b is provided with an inner projection 230 configured to cooperate with a recess 130 on the peripheral side 103 of the receptacle 100. The presence of the inner projection 230, in combination with the coupling of the peripheral body 200 to the wall 600, will prevent the flat portion 190 from being deformed when a torsion is exerted on the receptacle 100.

Figure 8 illustrates in more detail an exemplary embodiment of a receptacle 100 having a front side 101 and a back side 102. The receptacle 100 may be in accordance with the Zhaga standard (see LEX-R in Book 18, Edition 1.0, July 2018). The front side 101 is configured to receive electrical contacts from an external module (not shown) of a lighting equipment. The external module may also be in accordance with the Zhaga standard (see LEX-R in Book 18, Edition 1.0, July 2018). The back side 102 is designed to be electrically connected to components of the lighting equipment, such as an LED driver, a controller, a sensor, a measuring device, etc. The receptacle 100 houses a plurality of receptacle contacts 110 (shown schematically in Figure 8) in openings provided in the front side 101. Each receptacle contact 110 is provided, at a front end, with a front contact portion configured to be electrically connected to a contact of the external module, e.g., a pin similar to pin 520 of Figure 10. The front contact portions of the plurality of receptacle contacts 110 extend proximate the front side 101 of the receptacle 100. The plurality of receptacle contacts 110 extend substantially along a first cylindrical surface about a central axis of the receptacle. The front side 101 of the receptacle 100 may be provided with a central recess 165 configured to receive a center pin of the external module, preferably in accordance with the aforementioned Zhaga standard. Optionally, the receptacle 100 comprises an RFID tag (not shown in Figure 8), preferably on the front side 101 of the receptacle 100. Other components may also be included in the receptacle 100, such as wireless communication means, sensor means, an antenna, protection circuitry, etc.

The receptacle 100 has a housing comprising a substantially cylindrical front portion 181 on a front side 101 of the receptacle 100 and a rear portion 182 projecting rearwardly on a rear side of the cylindrical front portion 181. The rear portion 182 is provided on its rear side with a thread 170. The socket assembly may also comprise a nut (not shown in Figure 8) configured to screw onto the thread 170. The substantially cylindrical front portion 181 may comprise a first substantially cylindrical front portion 181a having a first diameter and a second substantially cylindrical front portion 181b having a second diameter that is larger than the first diameter. A peripheral surface of the first substantially cylindrical front portion 181a may be provided with recesses 186 adapted to cooperate with notches of the external module to lock an external module into the receptacle 100.

Preferably, the plurality of receptacle contacts 110 comprises: at least one receptacle contact for carrying power signals and/or at least one receptacle contact for carrying data or control signals and/or at least one receptacle contact for carrying a power signal and a data or control signal. For example, a first contact 110 may be a DC power supply (e.g., 24 V), a second contact 110 may be a positive pole for a dimming protocol (e.g., DALI), a third contact 110 may be a general digital I/O (e.g., greater than 7 V), and a fourth contact 110 may be simultaneously a negative pole for the dimming protocol, a ground for the power supply, and a ground for the general digital I/O.

Figure 9 illustrates a luminaire head with a housing H in which electrical components, such as a driver 710 and a PCB 720 with LEDs, are arranged. The housing H has a wall 600 with an opening O, in which a socket assembly 1000 according to any one of the embodiments described above is arranged with the rear side 102 of the receptacle 100 facing an interior space of the housing H. Wires W (for simplicity only one line is drawn, but this line represents more than one wire) connect the receptacle 100 to the electrical components. As shown, the housing H may be configured to be attached to a pole P. Figure 9 shows a so-called “side entry” luminaire of a luminaire, but one skilled in the art understands that embodiments of the invention are equally applicable to other types of luminaires, such as so-called “pole top” luminaires where the pole extends below the housing or to modular luminaires comprising a plurality of pole modules mounted one above the other. In the illustrated embodiment, the socket assembly 1000 is disposed on an upper wall of the housing H. However, as illustrated in Figures 11A-11C , a socket assembly 1000 may also be disposed on a lower wall of the housing. This may be particularly advantageous where the external module or receptacle contains a sensor configured to detect roadway events, e.g. e.g., an image sensor or a proximity sensor or the like, or where the external module or receptacle contains an emitter configured to emit signals in the road direction. In the illustrated example, the road extends in an X direction, the post P extends in a Z direction, and the luminaire head extends in a Y direction. Viewed in a projection on an XY plane, the socket assembly 1000 may be arranged between a PCB 720 containing the LEDs and the post P. In such an embodiment, a planar portion 190 of the receptacle 100 (see embodiments described above) may be oriented at a predetermined angle α with respect to the road direction X.

This can be achieved by giving the flat portion 290 of the peripheral body 200 a certain orientation with respect to the road. The angle α can be chosen depending on the external module to be fixed in the receptacle 100. For example, when a sensor included in the external module has an optimal orientation with respect to the road, the angle can be chosen so that the external module (and therefore the sensor) is positioned with an optimal orientation with respect to the road. It is noted that the socket assembly 1000 is not drawn to scale in Figure 11C, but is enlarged for clarity.

More generally, in embodiments of the invention, the receptacle may be arranged on any wall of a luminaire housing, and at least one peripheral body may be shaped and positioned such that the receptacle is mounted in a predetermined orientation relative to the road and/or other objects. In this manner, the external module may also be fixed in a predetermined position relative to the road and/or other objects.

Figure 10 illustrates another example of a receptacle 100 with an external module 500, which may be used in embodiments of a receptacle assembly of the invention. The example of Figure 10 may be designed according to any one of the aforementioned ANSI standards, and uses an external module 500 with a twist-lock plug containing, e.g., different control blocks and/or sensors (not shown). An external module 500 may comprise, e.g., a light sensor for detecting the light level of ambient light to automatically turn lighting fixtures on at dusk and off at dawn. An external module 500 typically comprises at least three standard pins 520 (also referred to as plug contacts or simply contacts) that insert into corresponding openings 160 in the receptacle 100. After the pins 520 are fully inserted, the external module 500 is rotated to lock it in place. When locked in place, pins 520 contact receptacle contacts 120. External module 500 may comprise further contacts 510 in the form of, e.g., conductive springs, for cooperating with contacts 110 of receptacle 100 in the form of conductive plates.

Figures 12A, 12B and 12C illustrate another exemplary embodiment of a receptacle assembly.

Figure 12C shows the receptacle assembly 1000 mounted on a wall 600 of a housing of a lighting equipment, typically an outdoor luminaire. The receptacle assembly 1000 comprises a receptacle 100, a peripheral body 200, a nut 300 for securing the receptacle 100 in an opening 610 in the wall 600, and optionally a gasket (not shown) inserted between the receptacle 100 and the nut. As shown in Figure 12B, the peripheral body 200 is inserted between the wall 600 and the nut 300.

The receptacle 100 has a front side to be located on an external (non-visible) side of the wall 600, a rear side 102 to be located on an internal side of the wall 600 and a peripheral side 103 between the front side 101 and the rear side 102. The receptacle 100 may be configured in a manner similar to that described above with reference to Figure 1.

The peripheral body 200 is arranged around the peripheral side 103 of the receptacle and is coupled to the wall 600 in such a manner that the peripheral body 200 cannot rotate relative to the wall 600. Furthermore, the peripheral body 200 and the peripheral side 103 of the receptacle 100 are coupled so that the receptacle 100 cannot rotate relative to the peripheral body 200.

In the embodiment of Figures 12A-12C, the peripheral body 200 is provided with three projections 220 configured to extend into three recesses 620 formed between circular edge segments 625 formed integrally with the wall 600. In that way, the peripheral body 200 can be a substantially planar body. It is noted that the edge segments 625 do not have to be circular and can have any shape or dimensions as long as they can form an abutment for the projections 220, so as to limit a rotation of the peripheral body with respect to the wall 600. In an alternative embodiment, the projections of the peripheral body can extend at an angle with respect to a planar portion of the peripheral body, e.g., perpendicular to a planar portion of the peripheral body, to cooperate with recesses in the wall corresponding to holes in said wall, in a manner similar to that described above for other embodiments. The peripheral body 200 has a front surface facing the wall 600, a rear surface 202 facing the nut 300, and an inner and outer circumferential surface 203, 204 between the rear surface 202 and the front surface. The peripheral body 200 may be a metal body.

The peripheral body 200 and the peripheral side 103 of the receptacle 100 are formed such that the receptacle 100 cannot rotate relative to the peripheral body 200. This can be achieved, on the one hand, by providing the inner circumferential surface 203 with a flat portion 290, wherein the peripheral side 103 of the receptacle 100 is provided with a corresponding flat portion 190. The inner circumferential surface 203 may further be provided with a substantially cylindrical portion 285 and the peripheral side 103 may be provided with a corresponding substantially cylindrical portion 185.

Preferably, the opening 610 in the wall 600 is slightly larger than the opening in the peripheral body 200 and surrounds the inner circumferential surface 203 of the at least one peripheral body 200, such that the receptacle 100 only comes into contact with the peripheral body 200, and not with the edge of the opening 610 in the wall. The opening 610 may be a circular opening as shown in Figure 12A. A force exerted on the receptacle 100 may be transferred directly to the peripheral body 200, limiting or avoiding the risk of damaging an edge of the opening 610 in the wall. On the other hand, the inner circumferential surface 203 of the peripheral body 200 is integrally formed with an inner projection 230 configured to cooperate with a recess 130 on the peripheral side 103 of the receptacle 100. The presence of the inner projection 230, in combination with the coupling of the peripheral body 200 to the wall 600, will prevent the flat portion 190 from being deformed by exerting a torque on the receptacle 100. By providing the peripheral body 200 and coupling the peripheral body 200 non-rotatably to the wall 600, on the one hand, and non-rotatably to the receptacle 100, on the other hand, rotation of the receptacle 100 during assembly can be limited or prevented.

The projections 220 and the corresponding recesses 620 may be provided in an irregular and/or asymmetrical manner, so that the peripheral body 200 can be positioned in a single position on the housing wall 600. This will further determine the position of the receptacle 100, since the receptacle 100 can be positioned in a single position on the peripheral body 200 due to the presence of the inner projection 230 and the recess 130.

Although the principles of the invention have been set forth above in connection with specific embodiments, it is to be understood that this description is made merely by way of example and not as a limitation of the scope of protection determined by the appended claims.

Claims (1)

A luminaire comprising a socket assembly (1000) mounted in an opening (610) in a wall (600) of the luminaire, said socket assembly comprising: - a receptacle (100) extending into the opening, said receptacle having a front side (101) for being located on an external side of the wall, a rear side (102) for being located on an internal side of the wall and a peripheral side (103) between the front side and the rear side, said receptacle (100) housing a plurality of receptacle contacts (110, 120) and said front side being configured to receive external contacts of an external module (500) such that the external contacts (510, 520) contact the receptacle contacts; -at least one peripheral body (200; 200a, 200b) arranged around the peripheral side of the receptacle and coupled in such a way with the wall that the at least one peripheral body cannot rotate with respect to the wall; -wherein the at least one peripheral body (200; 200a, 200b) and the peripheral side (103) of the receptacle are coupled so that the receptacle cannot rotate with respect to the at least one peripheral body; wherein the female plug assembly further comprises a nut (300), wherein the peripheral side of the receptacle is provided near the rear side with a thread (170) that cooperates with the nut to fix the receptacle in the opening, characterized in that the at least one peripheral body (200) is inserted between the wall (600) and the nut (300). A luminaire comprising a socket assembly (1000) mounted in an opening (610) in a wall (600) of the luminaire, said socket assembly comprising: - a receptacle (100) extending into the opening, said receptacle having a front side (101) for being located on an external side of the wall, a rear side (102) for being located on an internal side of the wall and a peripheral side (103) between the front side and the rear side, said receptacle (100) housing a plurality of receptacle contacts (110, 120) and said front side being configured to receive external contacts of an external module (500) such that the external contacts (510, 520) contact the receptacle contacts; -at least one peripheral body (200; 200a, 200b) arranged around the peripheral side of the receptacle and coupled in such a way with the wall that the at least one peripheral body cannot rotate with respect to the wall; -wherein the at least one peripheral body (200; 200a, 200b) and the peripheral side (103) of the receptacle are coupled so that the receptacle cannot rotate with respect to the at least one peripheral body; wherein the receptacle comprises a substantially cylindrical front portion (181) on the front side (101) of the receptacle (100) and a partially cylindrical rear portion (182) on the rear side (102) of the receptacle (100), wherein the diameter of the front portion is greater than the diameter of the rear portion, characterized in that The partially cylindrical rear portion (182) is provided with a flat wall portion (190) extending in an axial direction of the receptacle. A luminaire comprising a socket assembly (1000) mounted in an opening (610) in a wall (600) of the luminaire, said socket assembly comprising: - a receptacle (100) extending into the opening, said receptacle having a front side (101) for being located on an external side of the wall, a rear side (102) for being located on an internal side of the wall and a peripheral side (103) between the front side and the rear side, said receptacle (100) housing a plurality of receptacle contacts (110, 120) and said front side being configured to receive external contacts of an external module (500) such that the external contacts (510, 520) contact the receptacle contacts; -at least one peripheral body (200; 200a, 200b) arranged around the peripheral side of the receptacle and coupled in such a way with the wall that the at least one peripheral body cannot rotate with respect to the wall; -wherein the at least one peripheral body (200; 200a, 200b) and the peripheral side (103) of the receptacle are coupled so that the receptacle cannot rotate with respect to the at least one peripheral body; wherein the opening (610) is provided with a flat portion (690), characterized in that the peripheral side (103) is provided with a corresponding flat portion (190). The luminaire of any of the preceding claims, wherein one of the at least one peripheral body and the wall is provided with at least one projection (220) configured to extend into at least one corresponding recess (620) in the other of the at least one peripheral body and the wall, preferably at least two projections extending into at least two corresponding recesses, more preferably at least three projections extending into at least three corresponding recesses. 5. The luminaire of any of the preceding claims, wherein the at least one peripheral body (200; 200a, 200b) and the peripheral side (103) of the receptacle are shaped so that the receptacle cannot rotate with respect to the at least one peripheral body; and/or wherein the receptacle is configured to receive the external module by means of a twist-lock mechanism (186); and/or wherein the at least one peripheral body comprises a ring-shaped body (200). 6. The luminaire according to any of the preceding claims, wherein the peripheral side of the receptacle is provided with at least one recess (130) and/or projection and wherein the at least one peripheral body is provided with at least one inner projection (230) and/or corresponding inner recess configured to cooperate with the at least one recess and/or projection of the receptacle; and/or wherein the at least one peripheral body (200) has a front surface (201) in contact with the wall, a rear surface (202) and an inner and outer circumferential surface (203, 204) between the front surface and the rear surface. 7. The luminaire of claim 6, wherein the inner circumferential surface (203) of the at least one peripheral body (200) is integrally formed with at least one inner projection (230) and/or recess configured to cooperate with at least one recess (130) and/or projection on the peripheral side of the receptacle. 8. The luminaire of claim 4 and claim 6 or 7, wherein the front surface (201) is integrally formed with the at least one projection (220) and/or recess configured to extend into the at least one corresponding recess (620) and/or projection in the wall. 9. The luminaire of claim 1 and any one of claims 6-8, wherein the rear surface (202) is in contact with the nut. 10. The luminaire of any one of claims 6-9, wherein the inner circumferential surface (203) is provided with a flat portion (290) and wherein the peripheral side (103) is provided with a corresponding flat portion (190); and/or wherein the inner circumferential surface (203) is provided with a substantially cylindrical portion (285) and wherein the peripheral side (103) is provided with a corresponding substantially cylindrical portion (185). 11. The luminaire of any of the preceding claims, wherein the opening (610) is provided with a substantially cylindrical portion (985) and wherein the peripheral side (103) is provided with a corresponding substantially cylindrical portion (185). 12. The luminaire of any of the preceding claims, wherein the plurality of receptacle contacts comprises a plurality of first receptacle contacts (110) and, optionally, one or more second receptacle contacts (120); and/or wherein, viewed in a radial direction about a central axis of the receptacle, the plurality of first receptacle contacts (110) are positioned farther from the central axis than the one or more second receptacle contacts (120); wherein preferably the plurality of first receptacle contacts (110) extend substantially along a first cylindrical surface about a central axis of the receptacle; and/or wherein preferably the at least one second receptacle contact comprises a plurality of second receptacle contacts (120) extending substantially along a second cylindrical surface about a central axis of the receptacle; and/or wherein preferably front contact portions of the plurality of first receptacle contacts (110) extend flush with or near the front side of the receptacle. 13. The luminaire of claim 2, further comprising a gasket inserted between the nut and the front portion (181), preferably between the wall (600) and the front portion (181). 14. The luminaire of any of the preceding claims, wherein the receptacle (100) comprises an RFID tag (199), preferably on the front side (101) of the receptacle (100). 15. The luminaire of any of the preceding claims, wherein the plurality of receptacle contacts comprises: -at least one receptacle contact for carrying power signals, preferably at least two receptacle contacts for carrying power signals, and/or -at least one receptacle contact for carrying data or control signals, and/or -at least one receptacle contact for carrying power signals and data or control signals.