Modular Lighting System

Abstract

A lighting system (1) is disclosed that includes a plurality of modules (2). The modules (2) include a master module (2.1) and a plurality of slave modules (2.2). Each of the plurality of modules (2) includes a mounting interface (3) for mounting on a wall or ceiling, and a control unit (4). The control unit (4) is in each case configured to store a respective active light pattern. Each of the plurality of modules (2) further includes a module communication interface and a plurality of lighting elements (6). The master module (2.1) is configured to generate a respective start command for at least one module (2), and each module (2) is configured to autonomously execute the active light pattern of the respective module (2) in response to the respective start command.

Description

[Technical field]

[0001] The present invention relates to the field of lighting systems, in particular modular lighting systems designed as ceiling lights or wall mounted luminaires. [Background technology]

[0002] A wide variety of lighting systems are known in the art for the purpose of illuminating or illuminating rooms in homes, hotels, offices, etc. In addition to the primary objective of providing a required amount of light, such lighting systems may be designed to illuminate the room in a particularly comfortable manner. State-of-the-art lighting systems may be relatively complex systems including multiple modules and a wide variety of control functions, including different operating modes, brightness control, color temperature, etc.

[0003] EP 3107354 A1 shows an arrangement with several light modules. The light modules are connected to a common power supply and can communicate wirelessly or by wire. The complete light control is explicitly integrated in a control unit of each light module. For example in a stairwell, the light modules can respond in a coordinated way and have a "swarm intelligence". There should explicitly not be a central control program or a central control unit.

[0004] US9078299 B2 shows an intelligent lighting system. In addition to computational optimization and simulation components, the system can include a central control system that receives various input signals, e.g. from daylight sensors, timers, weather forecast data, and determines control signals for dimmers based on these signals. The connections can be wired or wireless. The control system can be implemented as a centralized system or as a distributed self-organizing system, where each luminaire has its own control system with its own intelligence. The overall control topology can be based on the principles of swarm intelligence.

[0005] EP2375867 A2 shows a control system (power control device) for LED lamps. It focuses on a specific, easy to implement hardware solution with the mandatory wireless control. Summary of the Invention

[0006] The overall objective of the present disclosure is to improve the state of the art regarding lighting systems for rooms, particularly interior rooms of buildings. Advantageously, the lighting system is relatively easy to install and offers high flexibility in terms of geometric setup as well as lighting functions. In certain designs, the lighting system may be used in particular in children's rooms, but also in other rooms such as living rooms, offices, etc. Advantageously, the lighting system offers multiple different and / or customizable lighting patterns and is adaptable to different needs.

[0007] Generally, the overall objective is achieved by the subject matter of the independent claims. Exemplary and particular embodiments are further defined by the subject matter of the dependent claims as well as the entire disclosure.

[0008] In one aspect, the overall objective is achieved by a lighting system. The lighting system includes a plurality of modules. The plurality of modules includes a master module and a plurality of slave modules. In a further aspect, the overall objective is achieved by a master module for use in a lighting system according to any embodiment of the present disclosure. In a further aspect, the overall objective is achieved by a slave module for use in a lighting system according to any embodiment of the present disclosure. In a further aspect, the overall objective is achieved by use of a lighting system, and / or a master module, and / or a slave module, according to any embodiment of the present disclosure.

[0009] The modules advantageously each include a mounting interface for mounting the respective module on a wall or ceiling. The modules each include a control unit, which in each case is configured to store a respective active light pattern of the respective module. Furthermore, the modules each include a module communication interface operatively coupled to the control unit of the respective module. Furthermore, the modules each include a plurality of lighting elements operatively coupled to the control unit of the respective module.

[0010] The master module further includes a power supply unit, the power supply unit configured to be connected to an external power supply. The power supply unit further includes a power distribution interface. The plurality of slave modules each include a power receiving interface configured to be electrically connected to the power distribution interface. Power is supplied to the slave modules via the power distribution interface of the master module and the power receiving interface of the slave module. The power supply unit may include an input supply connector, the input supply connector configured to be connected, in particular permanently connected, to the external power supply. In a preferred embodiment, the external power supply is a line voltage supply such as a typical building power supply, in particular a 230 VAC and / or 110 VAC line voltage supply.

[0011] In an embodiment, the power supply unit includes a central power adapter configured to convert power as provided by an external power source for use by the modules, as is commonly known in the art, and may include a transformer, a rectifier, a smoothing capacitor, etc. In such an embodiment, the output side of the central power adapter is connected to the power distribution interface, and thus the slave modules are supplied with power by the central power adapter through the power distribution interface and the power receiving interface of the respective module. Furthermore, in such an embodiment, the slave modules do not include a separate power adapter. For this type of embodiment, all modules, i.e. the master module as well as the slave modules, operate powered by the central power adapter. In an alternative embodiment, the power distribution interface is configured to be electrically connected directly to the external power source, and the power interface is connected directly to the input power connector without the central power adapter. In such an embodiment, each of the modules receives power provided by an external power source, in particular a line voltage. In such an embodiment, each of the modules, i.e. the master module as well as the slave modules, includes a separate local power adapter.

[0012] It is noted that the power supply of the slave modules via the power distribution interface of the master module and the power receiving interface of the slave module generally does not directly match the operating voltage of the lighting elements and / or circuits of the slave modules, but may have a different voltage, in particular a higher voltage, for example an AC voltage. Thus, the modules, in particular the slave modules, generally include a corresponding power interface circuit that provides the operating voltage(s) required for the lighting elements as well as for the general circuits of the respective module. Such a power interface circuit may for example be part of the control unit of the respective device. In embodiments with a local power adapter on each module, the power interface circuit may be part of the respective local power adapter.

[0013] The master module is further configured to generate a respective start command for at least one module. Each module is further configured to autonomously execute its active light pattern in response to the respective start command. Thus, each module executes its respective active light pattern upon receiving its start command. The start command that may be generated by the master module may in particular be or include an initial start command for switching the lighting system from a switch-off state, in which no module executes its respective active light pattern, to a switch-on state, in which one or more modules execute their respective active light pattern. The lighting system is switched on by the initial start command. The master module may in particular be configured to generate the initial start command in response to a corresponding user input or user action. In the switch-on state, the lighting system is also referred to as being activated, and in the switch-off state, the lighting system is also referred to as being stopped. In an embodiment, the control unit of the master module is further configured to generate a stop command, for example a global stop command, for switching the lighting system from the switch-on state to the switch-off state, as also discussed further below. Typically, the stop command may be generated in response to a corresponding user input or user action.

[0014] The master module further includes a local user interface in operative communication with the control unit of the master module and / or the control unit of the master module is configured to be in operative communication with a remote control device that provides the remote user interface, as described in more detail below.

[0015] In general, a user interface includes one or more input elements, such as keys, touch buttons, push buttons, etc., and / or one or more output elements, such as indicator LEDs and / or displays. The user interface may in some embodiments include a touch screen, among others. The expression "local user interface" refers to a user interface that is structurally integrated into or forms an integral part of the master module. If "remote user interface" or "local user interface" is not explicitly mentioned, the expression "user interface" may generally refer to either of them.

[0016] Via the user interface, the control unit of the master module may be controlled to generate an initial start command as previously described. Additionally, the user interface may be configured to receive a lighting pattern input provided by a user, the lighting pattern input defining at least one user-defined lighting pattern. Additionally, in some embodiments, the user interface may be configured to receive a selection input for selecting an active lighting pattern from a plurality of available lighting patterns as discussed below.

[0017] To communicate with the remote control device, the master module may include a remote control device communication interface, in particular a wireless remote control device communication interface, which is part of or operably coupled to the control unit of the master module. By way of example, the remote control device communication interface may be designed for communication via, for example, infrared, Bluetooth, WLAN, ZigBee, and / or any other communication technology and protocol as generally known in the art, and / or according to a proprietary communication protocol. The remote user interface may be or include, for example, a wireless light switch and / or dimmer as generally known in the art for starting and stopping the lighting of a room by the lighting system and / or adjusting the brightness of the lighting. Furthermore, the remote user interface may be provided on a general-purpose device, such as a smartphone, a tablet computer, a laptop computer PC, etc., that is configured to couple, in particular wirelessly couple, with the remote control device communication interface. Such a type of remote user interface has advantages such as providing a comfortable user interface for more complex actions, such as defining or programming a user-defined lighting pattern, selecting an active lighting pattern from a plurality of available lighting patterns as further described below. The generic device may execute corresponding software code or applications to function as a user interface for the lighting system. Alternatively, or in addition, the control unit of the master module includes an integrated web server configured to provide a user interface on a web browser of the generic device via the remote control device communication interface.

[0018] It is also noted that there may be more than one remote user interface in a particular configuration, optionally connected in addition to the local user interface, and different remote user interfaces may provide different functionality. As an example, there may be a simple wireless light switch for switching the light on and off, just like a conventional light. Switching the lighting system on and off may additionally be done, for example, via a generic device that further provides additional functionality.

[0019] The user interface may further be used to control one or more spot lighting elements and / or edge lighting elements, in particular to switch them on and off, as described further below.

[0020] A slave module generally does not have its own user interface and / or user interface communication interface. Communication with a slave module generally occurs via the master module and the module communication interface, respectively.

[0021] The modules are structurally separate and distinct; however, as described further below, they are generally arranged in a side-by-side arrangement and coupled to one another in an attached or operable configuration. Generally, there is a single master module and multiple slave modules. If not specified, e.g., as a "master module" or a "slave module," the term "module" generally refers to a module, either a master module or a slave module.

[0022] The lighting elements of each module are generally arranged on the front surface of the respective module. The front surface of each module faces the room in which the lighting system is installed or is the surface opposite to the wall or ceiling in which the module is installed. The outline of the module when viewed generally perpendicularly from outside the module (or from inside the room in which the lighting system is installed) at its front surface is called the footprint of the module. The direction across the footprint is called the thickness direction, and the dimension of the module in this direction is called the thickness. The dimension across the thickness direction or in the plane of the footprint is called the lateral dimension. The thickness direction is also generally essentially perpendicular to the wall or ceiling in which the module is mounted, and the lateral dimension is parallel or tangent to the wall or ceiling. Advantageously, the overall shape of the module is disc-shaped, for example the thickness being significantly smaller than the lateral dimension. In a typical design, the thickness of the module is between 20 mm and 100 mm, advantageously between 20 mm and 30 mm, while the footprint is square and has an edge length of 500 mm. Advantageously, the thickness is the same for all modules. The front face of each module is generally given by the side of the front wall (also called the front panel) of the respective module facing the room. The peripheral wall of each module advantageously projects in the thickness direction from the periphery of the side. The peripheral wall generally projects perpendicularly from the front wall of the respective module and / or from the wall or ceiling to which the module is mounted. In the mounted state, the modules may contact the wall or ceiling over their entire surface area (if the side of the module facing the wall or ceiling is flat) via a distance piece or spacer or along the peripheral wall. Although a generally closed peripheral wall is advantageous, some or all of the side faces of the module may in principle have openings or be open and / or be structured as desired. A side face of a module refers to a generally perpendicular view of the circumference or peripheral wall of the module or its cross-section. In a typical design where the front surface and footprint have a polygonal shape, e.g., a square, rectangle, or hexagon, the circumference or peripheral wall has a corresponding number of sides or segments.

[0023] In embodiments, the modules have in any case a substantially flat or planar front surface, in such embodiments the front surface of the module is generally parallel to the wall or ceiling on which the lighting system is installed and spaced therefrom by the thickness of the module.

[0024] The front wall of the module may have openings or apertures corresponding to the pattern of the lighting elements, each of which is arranged in or aligned with the respective opening. However, in a particularly advantageous embodiment, the front wall is made of a transparent or translucent material, for example glass, and the lighting elements are arranged in the module and shine their light through the front wall. If desired, the front wall, which is in principle transparent, may also be partially opaque or translucent, thereby forming a field stop for some or all of the lighting elements. By way of example, the front wall may be translucent or opaque over most of its surface area and may have transparent sections only in the areas where the lighting elements are arranged. Such transparent sections may have any desired shape, for example elliptical, circular or star-shaped, which appears illuminated when the respective lighting element is activated. If appropriate, a corresponding field stop may be arranged between the lighting elements and the front wall.

[0025] The multiple lighting elements of a module are generally arranged in a pattern and distributed laterally across each module or its front surface. The lighting elements of a single module may be of the same type or different types. Typically, the lighting elements include multiple light emitting diodes (LEDs), preferably four-color LEDs. The control unit of each module is generally configured to individually control a single lighting element and a single color of each lighting element (it is noted that a four-color LED generally consists of four LEDs having the colors red, green, blue, and white, but for the purposes of this specification they are considered in combination as one lighting element).

[0026] Typically, each module includes a separate mounting interface, which allows the respective module to be mounted and supported / carried by a wall or ceiling. It is noted that instead of a wall or ceiling, the modules may generally be mounted on any other substantially flat or planar surface. However, as will be further described below, in an assembled configuration with multiple modules, each and every module does not necessarily have to be individually mounted on a wall or ceiling. Instead, only a portion of the modules may be mounted directly on the wall of the ceiling, with other modules being supported by those modules that are directly mounted on the wall or ceiling. The mounting interface may include or be realized by, for example, a tubular element that may be located at or near the geometric center of the footprint and that may extend along the thickness direction, thereby allowing the mounting of the respective module via a screw or the like extending through the tubular element. However, it is noted that other mounting and / or fastening arrangements may also be foreseen.

[0027] The control unit of each module is generally a semiconductor-based circuit that typically includes one or more programmable components, such as a microcontroller that executes corresponding code, and / or dedicated circuits. Furthermore, the control unit generally includes interface and driver circuits required to control and drive the lighting elements of the respective module. Furthermore, other functional units of the module, such as the module communication interface, may be realized integrally with the control unit. The control unit and optionally further electronic components may be mounted, for example, on a printed circuit board (PCB) or on multiple interconnected PCBs.

[0028] The module communication interface of each module is configured for communication or data exchange with another module, i.e., serves the purpose of inter-module communication. Typically, the module communication interface of each module is configured to communicate or exchange data with each of the other modules. The module communication interface of each module may be wired or wireless. Further aspects of specific embodiments of the module communication interface are discussed further below. In addition to start and stop commands being exchanged via the module communication interface of each module, any other data and information is also exchanged between the modules. Accordingly, the module communication interface is generally configured for bidirectional communication.

[0029] In the case of a wired communication interface, the communication interface of each module may include multiple dedicated communication interface connectors, which may be located on different sides of each module in the same manner as discussed further below in relation to the power distribution and power receiving interface connectors, among others.

[0030] In an embodiment, the module communication interface of the master module is integrated with the power distribution interface, and the module communication interface of each slave module is integrated with the power receiving interface of the respective slave module. In such an embodiment, the electrical connection for the power supply or power distribution is also used for data exchange, and no separate physical interface or connector is required. In such an embodiment, the power supply may be modulated or altered to transmit data as is commonly known in the art.

[0031] In an embodiment, the power distribution interface of the master module includes multiple power distribution interface connectors, particularly multiple power distribution interface connectors arranged on different sides of the master module, where each power distribution interface connector is configured for simultaneous coupling with a power receiving interface of a respective different slave module. The power distribution interface connectors are generally electrically connected to each other. The power distribution interface connectors may be arranged on a peripheral wall of the master module as previously described.

[0032] In an embodiment, the power receiving interface of each of the at least a plurality of slave modules includes a plurality of power receiving interface connectors, in particular a plurality of power receiving interface connectors arranged on different sides of the respective slave module. The power distribution interface connectors may be arranged on the peripheral wall of the respective slave module as previously described. The power receiving interface connectors are each configured to alternately couple with a power distribution interface, in particular a power distribution interface connector, or a power receiving interface connector of another slave module. In a particular embodiment, all slave modules are designed in this way. The power receiving interface connectors of the slave modules are generally electrically connected to each other.

[0033] The power distribution interface connector and the power receiving interface connector may in particular be or include plug and / or socket connectors. Providing the power distribution interface connectors on different sides of the master module allows for direct provision of power to each of the multiple slave modules. Furthermore, providing the power receiving interface connectors on different sides of the slave modules allows for connecting the slave modules to the master module in various orientations. Furthermore, the power receiving interface of each of the slave modules may be configured to couple with the power receiving interface of another slave module. In particular, the power receiving interface connectors of the slave modules may each be configured to couple with the power receiving interface connector of another slave module. This type of design allows for indirect power supply to the slave modules via other slave modules. In other words, the power receiving interface of the slave module may simultaneously supply power to one or more further slave modules, and accordingly, the power supply is made by wire from the master module to the particular slave module via one or more intermediate slaves. Thus, if the power receiving interface of the respective slave module is directly connected to the power distribution interface of the master module, the power supply of the slave module by the master module may be direct. This is generally the case for slave modules that are located adjacent to the master module. Alternatively, the powering of the slave modules by the master module can be indirect, if the power receiving interface of the respective slave module receives power via the power receiving interface of another slave module, in particular an adjacent slave module.

[0034] By providing the power distribution and power receiving interface connectors on different sides, advantageously on all sides of the master and slave modules, respectively, side-by-side placement of multiple modules is possible without the need for cabling or wiring between the modules.

[0035] In an embodiment, the power distribution interface connectors and the power receiving interface connectors are in each case arranged to be flush with the side or peripheral wall or to be located behind the side. If an electrical connection is to be established between adjacent modules, corresponding intermediate connector elements may be provided to couple the respective connectors. In this way, there are no protruding elements in any case, which is particularly advantageous for modules that are not surrounded on all sides by adjacent modules. It is further advantageous that all the power distribution interface connectors and the power receiving interface connectors are of identical design. As explained before, the power distribution interface and the corresponding power distribution interface connector of the master module, as well as the power receiving interface and the corresponding power receiving interface connector of the slave module, may be designed for line voltage, if each module includes a separate local power adapter, or may be designed according to the output of the central power adapter of the master module.

[0036] It is noted that one or more slave modules may be provided with power via a dedicated wire or cabling connected to its power receiving interface, in particular the power receiving interface connector as described above. This is the case when modules or groups of modules may not be arranged separately, for example due to constraints such as beams. In this case, the modules are arranged, for example, in two groups separated by a beam, one of the groups comprising a master module. In such a case, the beam may be bridged by a cabling or wiring. The same may be true for the module communication interfaces.

[0037] In an embodiment, each module includes a plurality of module interconnection interfaces. Each region of the module interconnection interfaces is configured to mechanically interconnect the respective module to an adjacent module. In general, each module interconnection interface is configured to mechanically interconnect the respective module to one adjacent module in a one-to-one manner. The module interconnection interfaces of each module are advantageously located on or within the perimeter wall of each module, as previously described. In the case of modules that allow for planar filling of walls or ceilings as discussed further below, the module interconnection interfaces may be located on the perimeter wall of each side of the module where adjacent modules may be located. In particular, in the case of modules with a square or rectangular footprint, the module interconnection interfaces may be located on each of the four sides.

[0038] The module interconnection interface may in an embodiment include a plurality of, for example two, receptacles, for example holes in a side or peripheral wall of the respective module. In the mounted configuration, each of the receptacles is aligned with a corresponding receptacle of an adjacent module. Adjacent modules may be connected via a connection element, for example a bolt, that is partially inserted into the aligned receptacles of the adjacent module. The connection element as well as the module interconnection interface is advantageously designed and dimensioned to absorb bending forces. In this way, it is not necessary for every module to be separately mounted to a wall or ceiling as described above, but some modules may be supported by nearby or adjacent modules. As an example, it may be sufficient to directly mount every other module in a row of modules to a wall or ceiling. Where appropriate, the module interconnection interface may include a mechanical locking mechanism.

[0039] In an embodiment, the modules each have a footprint, in particular an identical footprint, that allows for the occlusion of a wall or ceiling by a number of modules. In a particular embodiment, the modules each have a footprint that corresponds to an equilateral triangle, a rectangle, a square or a regular hexagon. A footprint that allows for occlusion is advantageous from a design and aesthetic point of view, since it allows the modules to be arranged such that their respective front faces combine to form a common, uninterrupted front face of the lighting system. It is noted that the exemplary footprints mentioned are not mandatory. Instead, other more complex footprint shapes may be used, for example as known for tiles.

[0040] In typical embodiments, each side of a module that includes a module interconnect interface includes a power distribution interface connector in the case of a master module or a power receiving interface connector in the case of a slave module. Additionally, in embodiments where a separate communication interface connector is foreseen, each such side advantageously includes a communication interface connector.

[0041] The expression "lighting pattern" refers to the control of lighting elements of a specific module as a function of time. A lighting pattern may include information regarding activation / deactivation (i.e. switching on and off), brightness, and color temperature of lighting elements (as determined by the control of a single LED of a four-color LED as described above). The expressions "storing", "transmitting", or "receiving" should be understood to store, transmit, or receive, respectively, control information and / or control parameters in relation to a lighting pattern. Examples for lighting patterns are, for example, a blinking pattern, a random pattern (including both brightness and color temperature), a pattern with increasing and decreasing brightness, or a running light pattern.

[0042] The light pattern may be an infinite light pattern, which once started, runs continuously or indefinitely until explicitly stopped, for example via a corresponding stop command. Alternatively, the light pattern may be a single-run light pattern, which is a light pattern that is run only once in response to each start command and runs again only upon a new respective start command.

[0043] The lighting patterns may be predefined and pre-stored lighting patterns readily provided with the module. Alternatively, or in addition, the lighting patterns may be user-defined lighting patterns entered via a user interface and / or remotely generated lighting patterns received from a remote device via a remote device communications interface, as described below.

[0044] According to the present disclosure, each module is configured to store at least a respective active lighting pattern and to autonomously execute the respective active lighting pattern upon receiving a respective start command. In this way, only a minimal amount of inter-module communication is required during operation of the lighting system, largely independent of the total number of lighting modules and the complexity of the individual lighting patterns. The expression "autonomous execution" refers to the fact that each lighting module does not require any further data to execute its respective active lighting pattern. The active lighting patterns stored by the control unit of each module may be the same or different between some or all modules.

[0045] The lighting of the room is started by the master module generating a start command, in particular an initial start command as described above, for at least one module, so that each module executes its active lighting sequence. Optionally, the master module may generate respective start commands for some or all modules at the same time and / or with a relative time delay. It is noted that the master module is configured to operate in the same way as the slave modules, with respect to the execution of the general lighting pattern, in particular the respective active lighting pattern. Accordingly, the master module is configured to execute its active lighting pattern in response to a respective start command. Such a start command for the master module may be generated by the control unit of the master module. However, as will be discussed in more detail further below, the slave modules or the control unit may also be configured to generate start commands for the master module in addition to another slave module.

[0046] In an embodiment, the master module is further configured to generate a stop command. Such a stop command can be either a dedicated stop command for a particular module or modules, or a global stop command for all modules. In response to the respective stop command, the module stops or terminates the execution of its respective active light pattern. The stop command, in particular the global stop command, can be used in particular to terminate the lighting of the room in which the lighting system is installed.

[0047] In certain embodiments with a local user interface, the local user interface is arranged to be movable, in particular pivotable, between a fold-out configuration and a fold-in configuration, in which the user interface protrudes from the front face of the master module and in which the user interface is flush with the front face of the master module.

[0048] Such a movably positioned local user interface is advantageous in terms of both space consumption and design / aesthetics. In a fold-in configuration, the local user interface may simply form part of the front face of the master module and essentially "disappear." In a fold-out configuration, such a local user interface provides sufficient space for all desired input / output elements, such as a display, keys, and / or touch screen.

[0049] Depending on the pattern in which the lighting elements are arranged, one or more lighting elements of the master module may be integrated into the local user interface, which are visible together with the other lighting elements of the master module in a fold-in configuration.

[0050] In an alternative embodiment, the local user interface is integrated in a non-movable manner into the master module. In this embodiment, the user interface may be recessed against the front face of the master module, and the front wall of the master module itself is arranged to be pivotable or removable, for example via a user-operable snap-in or click-in connection. When the front wall is removed or pivoted away from the body of the master module, the local user interface is accordingly accessible, but is otherwise hidden and optically disappears.

[0051] In an embodiment, the master module includes a remote device communication interface. The master module may be configured to receive at least one light pattern via the remote device communication interface. Such remotely generated light patterns may function as active and / or available light patterns, as further described below. The remote device communication interface may be part of the control unit of the master module or may be operably coupled to the control unit of the master module.

[0052] The remote device communication interface may be separate, integral and / or identical to the remote control device communication interface as previously described. Via the remote device communication interface, new lighting patterns may be transferred to the lighting system in a suitable manner. The remote device communication interface may, for example, be or include a WLAN and / or LAN interface. In this way, lighting patterns may, for example, be purchased from a lighting system supplier and transmitted directly to the lighting system by the supplier as remotely generated lighting patterns.

[0053] In an embodiment, the master module includes a plurality of sensors, where the sensors are each configured to provide a respective sensor signal dependent on at least one environmental parameter, and the master module may be configured to control operation of the lighting elements of at least one module of the plurality of modules dependent on a number of the sensor signals.

[0054] Such sensors may include room climate sensors, such as, for example, room temperature sensors, humidity sensors, and also, for example, oxygen and / or carbohydrate sensors, and / or photo or light sensors. Control of the operation of the lighting elements in dependence on such sensor signals allows an additional use of the lighting system for monitoring and indicating relevant environmental conditions. The control unit of the master module may in particular be configured to control the lighting elements to continuously or repeatedly compare one or more sensor signals with respective threshold values ​​and to emit a light alarm or warning if the threshold value is exceeded. The master module may further be configured to transmit information determined by the one or more sensors, such as measurements, alarms, and / or warnings, to a remote device, for example a smartphone.

[0055] In addition to the control of the lighting elements depending on the sensor signal, the issuance of alarms or warnings depending on the sensor signal may also be advantageously configured, parameterized and / or activated or deactivated via a user interface and / or a remote device, as described above. Furthermore, one or more sensors, in particular light sensors, may control the switching on and off of the edge lighting elements as will be further described below. In a further embodiment, one or more sensors as previously described may be arranged in a slave module.

[0056] In an embodiment, the modules are each configured to store a plurality of respective available light patterns. The master module may be configured to generate respective selection commands for each module. Each module is configured to select one of the respective available light patterns as a respective active light pattern in response to the respective selection command.

[0057] Each module that stores multiple available light patterns allows for flexible use and modification of light patterns in a convenient manner while minimizing communication activity between modules. Such available light patterns may be pre-installed, may be user-defined light patterns, and / or may be remotely generated light patterns. In a typical embodiment, all modules store the same available light patterns. However, alternatively, different modules may store different available light patterns.

[0058] In an embodiment, the lighting system is configured to transmit a lighting pattern from a master module to a number of slave modules. The lighting pattern may advantageously be transmitted via a module communication interface of the master module and the slave module. The transmitted lighting pattern may be, for example, a user-defined lighting pattern inputted via a user interface or a remotely generated lighting pattern. As a method, the lighting pattern may be distributed from the master module to the slave modules. The lighting system may be configured to distribute the lighting pattern to a specific slave module, to a number of slave modules, or to all slave modules.

[0059] In embodiments in which the slave modules are configured to store only a single lighting pattern, i.e., their respective active lighting pattern, rather than storing multiple available lighting patterns each, changing the lighting pattern is possible by transmitting the lighting pattern from the master module to the slave module.

[0060] In an embodiment, the slave modules are each configured to generate a respective start command for at least one other module. Generally, the at least one other module may be any module or group of modules including the master module. This type of embodiment is particularly advantageous in connection with meta-lighting patterns as described below. A meta-lighting pattern is a lighting pattern that is executed simultaneously or sequentially by a number of different modules. Typically, an active lighting pattern is a single-run lighting pattern. By way of example, a single-run lighting pattern executed by a module as an active lighting pattern may be a running light lighting pattern that includes sequentially controlling the lighting elements of each module such that the running light moves from one end of the module, e.g., the left end, to an opposing end of the respective module, e.g., the right end. Assuming that a number of modules are arranged in a row, a corresponding running light meta-lighting pattern may include the running light moving from the left side of the left-most module to the right side of the right-most module. To execute such a running light meta-lighting pattern in a coordinated and synchronous manner, each module may generate a start command for its respective adjacent module on the right side upon completion of execution of its running light lighting pattern. By the right-most module generating a start command for the left-most module, the meta lighting pattern of the running lights is made up of single-run lighting pattern executions by the individual modules, while each may be executed as an infinitely infinite lighting pattern. Thus, while the meta lighting pattern may be, and typically is, an infinite lighting pattern, the active lighting patterns of the individual modules are themselves single-run lighting patterns. Advantageously, the execution of its active lighting pattern by the master module may also be initiated via a start command generated by the slave module.

[0061] A slave module may be configured to generate a start command for one, several or all of the other modules. In general, the start command may be generated by a module depending on the execution of the active light pattern of the respective module, in particular at a certain point in time of the execution of the active light pattern by the respective module. The point or points in time at which the start command for at least one further module is generated may form part of the light pattern.

[0062] In an embodiment, each module is configured to store a respective unique module identifier and to transmit the respective unique module identifier to at least one other module of the plurality of modules. The unique module identifier is advantageous for exchanging information between selected modules, for example, when transmitting start and / or stop commands or transmitting lighting patterns as previously described.

[0063] In an embodiment, the control unit of the master module is configured to store a position map, the position map reflecting the position of each module relative to each other module. A local user interface and / or a remote user interface as previously described may be configured to input the position map, for example via a touch screen, and / or the position map may be received from another remote device as previously described. The single modules may be identified, for example via their respective module identifiers as previously described. The position map is particularly advantageous during the execution of a meta-lighting pattern as previously described. In a particularly advantageous embodiment, the master module is configured to transmit the position map to each of the slave modules, each of which is configured to receive and store the position map. Given a meta-lighting pattern, the lighting system may be configured to automatically determine the timing of a start command for each module based on the positions of the modules or their relative positions.

[0064] Optionally, one, some, or all of the modules may further include spot lighting elements, which may be located, for example, in a central region of the respective module. Such spot lighting elements may be more powerful than the further lighting elements. Spot lighting elements are particularly useful for providing additional lighting to a room on demand. In embodiments in which one, some, or all of the modules include spot lighting elements, such spot lighting elements may be switched on and off individually and / or in combination via a user interface. In an embodiment, as previously described, switching on and off the spotlights is only possible with the lighting system switched on. However, in an alternative embodiment, switching on and off the spot lighting elements is independent of the operating state of the lighting system.

[0065] Further optionally, the module may include one or more edge lighting elements. The edge lighting elements may be provided along the edge of the module, in particular the edge of the front surface of the module respectively, and may illuminate or light the edge. The edge lighting elements are advantageously provided at the free edge of the outermost module in the mounted configuration. Depending on the particular pattern in which the modules are arranged, the edge lighting elements may be provided along one or more edges. The edge lighting elements, like the spot lighting elements, may be activated and deactivated or switched on and off independently of the execution of the lighting pattern. Furthermore, the edge lighting elements may be switched on and off in a time-controlled manner and / or may be controlled via one or more sensors, e.g. light sensors. [Brief description of the drawings]

[0066] [Figure 1] 1 shows a schematic diagram of an embodiment of a lighting system; [Diagram 2] FIG. 2 illustrates a block diagram of an embodiment of a master module. [Diagram 3] FIG. 2 illustrates a block diagram of an embodiment of a slave module. [Figure 4] 1 shows a schematic front view of an embodiment of a module. [Diagram 5] 1 shows a schematic diagram of an exemplary arrangement of a master module and multiple slave modules. [Figure 6] 1 shows a schematic diagram of a further exemplary arrangement of a master module and multiple slave modules; [Figure 7] 1 shows a schematic diagram of a further exemplary arrangement of a master module and multiple slave modules; [Figure 8] FIG. 1 shows a schematic diagram of a master module in a fold-out configuration according to the present disclosure. [Figure 9] FIG. 1 shows a schematic diagram of a slave module according to the present disclosure. [Figure 10] 9 shows a schematic exploded view of the master module according to FIG. 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0067] FIG. 1 shows a schematic diagram of a lighting system 1 including a plurality of modules 2 in an exemplary arrangement. The illustrated configuration includes one master module 2.1 and six slave modules 2.2. This arrangement is selected for illustrative purposes only. Any customized arrangement or pattern is possible, and any number of modules 2 is possible. The illustrated modules 2 each include a mounting interface 3 configured to mount the respective module 2 on a wall or ceiling. The modules 2 each further include a control unit 4 configured according to any embodiment as disclosed in the general description above. The illustrated modules 2 each further include a plurality of lighting elements 6 operably coupled to the control unit 4 of the respective module 2, the lighting elements 6 being realized as four-color LEDs. The master module 2.1 includes a power supply unit 7 configured to be connected to an external power source, in particular a line voltage power source. The illustrated modules 2 are structurally separate and distinct. They are arranged in a side-by-side arrangement and coupled to each other in a mounted and operable configuration. The modules 2 are interconnected to each other to form the illustrated arrangement by a plurality of mechanical module interconnection interfaces 2.3 configured to mechanically interconnect each module 2 with adjacent modules 2. The master module 2.1 of the power supply unit 7 further includes a power distribution interface with four power distribution interface connectors on its four sides. Additionally, the slave modules 2.2 each include a power receiving interface with four power receiving interface connectors on its four sides. Each power receiving interface connector is configured to couple with the power distribution interface connector of the master module 2.1 when the respective slave module 2.2 is adjacent to the master module or, alternatively, to the power receiving interface connector of an adjacent slave module.It is noted that in the illustrated configuration, only two of the four power distribution interface connectors are in each case coupled to the power receiving interface connectors of the adjacent slave module 2.2 (i.e., on the right side and bottom side of the master module 2.1), while the power distribution interface connectors on the left side and top side are left unconnected in the illustrated configuration. Similarly, the power receiving interface connectors on the free sides of the master module 2.2 are left unconnected.

[0068] FIG 2 shows a block diagram of an embodiment of a master module 2.1 according to the present disclosure, and FIG 3 shows a block diagram of an embodiment of a slave module 2.2. As an example, the master module 2.1 and the slave module 2.2 in FIG 1 can be designed according to FIG 2 and FIG 3.

[0069] The illustrated modules 2.1, 2.2 each include a mounting interface 3 for mounting the respective module 2 to a wall or ceiling. Additionally, the master module 2.1 and the slave module 2.2 each include a respective control unit 4, although the control unit 4 of the master module 2.1 is configured to operate differently and provide additional functionality compared to the control unit 4 of the slave module 2.2 and as previously explained in the general description. The modules 2.1, 2.2 each further include a module communication interface 5 operably coupled to the control unit 4 of the respective module. The module communication interface 5 may be a dedicated wired communication interface with a corresponding connector, a wireless communication interface, or may be integrated with a power supply and distribution as previously explained in the general description and below. The modules 2.1, 2.2 each further include a plurality of lighting elements 6 operably coupled to and controlled by the control unit 4 of the respective module.

[0070] The master module 2.1 further includes a power supply unit 7 configured to be connected to an external power source and including an input supply connector 7.2. The input supply connector 7.2 may generally be designed in the same manner as known for wall or ceiling mountable lamps or lighting systems and may include, for example, screw terminals for electrical coupling to a line voltage supply source. The illustrated power supply unit 7 includes a power distribution interface 7.1 and the slave module 2.2 includes a power receiving interface 2.2.1. The power receiving interface 2.2.1 of the slave module 2.2 includes a plurality of power receiving interface connectors 2.2.1.1 configured to alternatively couple with the power distribution interface 7.1, in particular the power distribution interface connector 7.1.1 of the master module 2.1 or the power receiving interface connector 2.2.1.1 of another slave module.

[0071] In some embodiments, the power supply unit 7 includes either a central power adapter 7.1.2 configured to transform or convert the line voltage for use by the modules 2.1, 2.2, as is generally known in the art. The central power adapter 7.1.2 may in particular provide a lower voltage, for example 12V or 24V, as either an AC voltage or a DV voltage, at its output side. In such an embodiment, the output side of the central power adapter 7.1.2 is connected to the power distribution interface 7.1. The central power adapter 7.1.2 in such an embodiment is configured and dimensioned to supply power to the slave module 2.2 in addition to the master module 2.1. In such an embodiment, in addition to the power distribution interface 7.1 and thus the power distribution interface connector 7.1.1 of the master module 2.1, the power receiving interface 2.2.1 and thus the power receiving interface connector 2.2.1.1 of the slave module 2.2 are also designed according to the output of the central power adapter 7.1.2 of the master module 2.1.

[0072] Alternatively, the power distribution interface 7.1 is electrically connected directly to an external power source, and each of the modules is supplied with power as provided by the external power source or the line voltage power source. In such an embodiment, the master module 2.1 as well as the slave module 2.2 includes a separate local power adapter 8. Such a local power adapter 8 may be designed in the same manner as previously described in relation to the central power adapter 7.1.2, but is generally configured and dimensioned only to supply power to the respective module 2.1, 2.2. In such an embodiment, the power distribution interface 7.1, and thus the power distribution interface connector 7.1.1 of the master module 2.1 as well as the power receiving interface 2.2.1 and thus the power receiving interface connector 2.2.1.1 of the slave module 2.2 are also designed for line voltage.

[0073] The master module 2.1 further includes a local user interface 2.1.1 operably coupled to the control unit 4 of the master module 2.1. In the illustrated embodiment, the control unit 4 of the master module 2.1 is also configured to operably couple to the local user interface 2.1.1 and / or the remote user interface 2.1.2 via the remote user interface 2.1.2. The control unit 4 of the master module 2.1 may be controlled to generate initial start commands, thereby switching the lighting system 1 on and off or between an operational and inoperative state of the lighting system, programming or inputting new lighting patterns, selecting an active lighting pattern from a plurality of available lighting patterns, etc. In the illustrated embodiment, the master module 2.1 also includes an optional remote device communication interface 2.1.4, for example, for receiving lighting patterns from a remote device, e.g., a server, and / or for receiving firmware or software updates, etc.

[0074] To communicate with the remote user interface 2.1.2, the master module 2.1 includes a remote control device communication interface 2.1.3, which may be designed as a wireless remote control device communication interface 2.1.3, operably coupled with the control unit 4 of the master module 2.1, and may include, for example, one or more of a Bluetooth interface, a WLAN interface, and / or a ZigBee interface. The remote device communication interface 2.1.4 may be separate from the remote control device communication interface 2.1.3 or may be partially or completely integrated therewith, i.e. the same interface may function as both the remote control device communication interface 2.1.3 and the remote device communication interface 2.1.4.

[0075] The module communication interface 5 of each module 2 is configured for communication or data exchange with another module 2. Typically, the module communication interface 5 of each module 2 is configured to communicate or exchange data with each of the other modules 2.

[0076] The illustrated master module 2.1 further comprises a number of sensors 9 configured to provide respective sensor signals in dependence on at least one environmental parameter. The master module 2.1 is configured to control the operation of the lighting elements 6 of at least one of the plurality of modules 2 in dependence on a number of the sensor signals, as will be explained in more detail in the general description.

[0077] The control unit 4 of each module 2 is generally a semiconductor-based circuit that typically includes one or more programmable components, such as a microcontroller that executes corresponding code, and / or dedicated circuitry, as will be explained in more detail in the general description. Further electronic components and modules, such as sensors 9, remote control device communication interface 2.1.3 and / or remote device communication interface 2.1.4, may be partially or fully integrally formed with the control unit 4.

[0078] FIG. 4 shows a schematic front view of a module 2, which can be either a master module 2.1 or a slave module 2.2. The front face 2.4 of the illustrated module 2 faces the room in which the lighting system 1 is installed or is facing away from the wall or ceiling in which the module 2 is installed. The footprint is square, for example with an edge length of 500 mm, while the overall shape of the illustrated module 2 is disk-shaped, with a thickness of the module 2 in a typical range of 20 mm to 100 mm. The lighting elements 6 of the illustrated module 2 include a plurality of light-emitting diodes (LEDs), advantageously four-color LEDs. The control unit 4 of each module 2 is generally configured to individually control a single lighting element 6 and a single color of each lighting element. The tubular mounting interface 3 is also visible in FIG. 4 for illustrative purposes, but is typically only visible and accessible after removal of the front wall of the module 2.

[0079] Figures 5-7 show various geometric arrangements of the lighting system 1. Figure 5 exemplarily shows a square arrangement of nine modules 2. The modules 2 in the illustrated arrangement each have an identical footprint, for example a footprint of 500 mm x 500 mm, that allows them to be arranged next to each other. The square tessellation of the illustrated modules 2 is advantageous from a design and aesthetic point of view, since it is possible to arrange the modules such that an inner module is completely surrounded by an adjacent module 2. The illustrated arrangement of the modules 2 has the advantage of forming an uninterrupted pattern and covering an entire wall or ceiling. It is noted that the illustrated exemplary footprint is not mandatory. As already explained in the general description, other more complex footprint shapes may be used. Any one of the nine modules 2 may be a master module 2.1, the others being slave modules 2.2.

[0080] Fig. 6 shows an arrangement with, for example, four modules 2 in total arranged in a row or along a line. By way of example, the leftmost module is the master module 2.1 and the other modules are slave modules 2.2. However, the master module 2.1 may also have any other position in an arrangement according to Fig. 6 as desired and / or necessary, for example depending on the position of an external power supply.

[0081] 7 shows a cross-shaped arrangement of one master module 2.1 and four adjacent slave modules 2.2. This arrangement is shown to demonstrate that the modules 2 need not be arranged in a square, rectangle, or in a line, but could theoretically be arranged in any desired pattern. Further illustratively, the master module 2.1 is shown in the center, but could be in any position as previously explained.

[0082] Figure 8 shows an embodiment of a master module 2.1 with a fold-out configuration of the local user interface 2.1.1. Figure 9 shows a master module 2.1 with a fold-in configuration of the local user interface 2.1.1, which also serves a slave module 2.2. Therefore, apart from the local user interface 2.1.1, the following description of the master module 2.1 also refers to the slave module, which is not specifically distinguished.

[0083] The modules are circumferentially constrained by a frame 2.6. In the illustrated embodiment, the frame 2.6 is made of extruded profiles and includes module interconnection interfaces 2.3 for interconnecting the modules 2 via bolts. In alternative designs, the frame 2.6 may be manufactured by machining, for example milling, or may be molded, stamped, die-cut, etc. The frame 2.6 exemplarily has four segments that define the four sides of the module and combine to form the peripheral wall of the module. The illustrated master module 2.1 includes a number of power distribution interface connectors arranged on each side of the master module 2.1. To access the power distribution interface connectors, corresponding slits 2.9 are foreseen in the frame 2.6. In the case of the slave modules, the power receiving interface connectors are similarly arranged in the same position on the respective module. When an electrical connection is established between the master module 2.1 and an adjacent slave module 2.2, a corresponding intermediate connector element may be coupled between the power distribution interface connector and the power receiving interface connector. This also applies to the electrical connection between the power receiving interface connectors of adjacent slave modules. In embodiments in which the module communication interface is a wired interface with a dedicated module communication interface connector, such module communication interface connectors may be generally arranged in the same manner, e.g., accessible via the same slit 2.9 or separately.

[0084] The frame 2.6 of each module is further configured to accommodate a lighting element carrier 2.7 (see FIG. 10) on which the lighting elements are arranged. Both modules 2 are covered by a front wall or front panel 2.8. In the illustrated embodiment, the front wall 2.8 is made of a transparent material. The illustrated master module 2.1 includes a pivotally arranged local user interface 2.1.1. The local user interface 2.1.1 protrudes from the front surface 2.4 of the master module 2.1 in the illustrated fold-out configuration (FIG. 8) and is flush with the front surface 2.4 of the master module 2.1 in the fold-in configuration (FIG. 9). In this configuration, the visible appearance of the master module 2.1 generally corresponds to or is identical to that of the slave module.

[0085] FIG. 10 shows an exploded view of the master module 2.1 according to FIG. 8. The illustrated master module 2.1 is designed as a sandwich structure. In the illustrated embodiment, the master module 2.1 comprises a base plate 2.5 made of lightweight building board. In the illustrated embodiment, the base plate 2.5 is designed as a honeycomb structure. Alternatively, a combination of cupboard, fiberboard or a thin board and a foam material or fabric attached thereon is also possible. The illustrated master module 2.1 is limited in the circumferential direction by a frame 2.6, which in this embodiment is made of extruded profiles. Alternatively, a frame 2.6 made of other materials such as sheet metal, composites or reinforced composites is also possible. The illustrated module interconnection interface 2.3 is configured to receive a connection element, in particular a bolt, which is partially inserted in the module interconnection interface 2.3 and aligned with the module interconnection interface 2.3 of the adjacent module. In the illustrated embodiment, the front wall 2.8 is made of a transparent polymer. For example, glass, plexiglass or other transparent materials are possible. The master module 2.1 is placed in the mounting interface and assembled with the help of a central connection element which interconnects the base plate 2.5, the lighting element carrier 2.7 and the cover plate 2.8 of the module 2 and also interconnects the whole module 2 to the wall or ceiling where it is mounted. Apart from the local user interface 2.1.1, the design and exploded view of the slave module 2.2 are generally identical. [Explanation of symbols]

[0086] 1. Lighting system 2 Module 2.1 Master Module 2.1.1 Local User Interface 2.1.2 Remote User Interface 2.1.3 Remote Control Device Communication Interface 2.1.4 Remote Device Communication Interface 2.2 Slave Module 2.2.1 Power receiving interface 2.2.1.1 Power Receiving Interface Connector 2.3 Module Interconnection Interface 2.4 Front 2.5 Base plate 2.6 Frames 2.7 Lighting element carrier 2.8 Front wall 2.9 Slits 3. Mounting Interface 4. Control Unit 5 Module Communication Interface 6 Lighting elements 7 Power supply unit 7.1 Power Distribution Interface 7.1.1 Power Distribution Interface Connector 7.1.2 Central Power Adapter 7.2 Input power connector 8 Separate local power adapter 9 Sensors

Claims

1. A lighting system (1) including a plurality of modules (2), wherein the plurality of modules (2) includes a master module (2.1) and a plurality of slave modules (2.2), and each of the plurality of modules (2) has An attachment interface (3) for attaching each module (2) to a wall or ceiling, A control unit (4) configured to store the respective active lighting patterns of each module in each case, A module communication interface (5) operably connected to the control unit (4) of each module (2), And a plurality of lighting elements (6) operably connected to the control unit (4) of each module (2), The master module (2.1) includes a power supply unit (7), the power supply unit (7) is configured to be connected to an external power supply, the power supply unit (7) further includes a power distribution interface (7.1), and each of the plurality of slave modules (2.2) includes a power receiving interface (2.2.1) configured to be electrically connected to the power distribution interface (7.1), The master module (2.1) is configured to generate respective start commands for at least one module (2), and each module (2) is configured to autonomously execute the active lighting pattern of each module (2) in response to each of the start commands, The master module (2.1) includes a local user interface (2.1.1) operably connected to the control unit (4) of the master module (2.1), and / or the control unit (4) of the master module (2.1) is configured to be operably connected to a remote user interface (2.1.2), An illumination system (1), wherein each of the slave modules (2.2) is configured to generate respective start commands for at least one other module (2). **Claim 2** The illumination system (1) according to claim 1, wherein the master module (2.1) includes a local user interface (2.1.1) that is movably or pivotally arranged between a fold-out configuration and a fold-in configuration, and the local user interface (2.1.1) protrudes from the front face (2.4) of the master module (2.1) in the fold-out configuration and is flush with the front face (2.4) of the master module (2.1) in the fold-in configuration. **Claim 3** The illumination system (1) according to claim 1 or 2, wherein the master module (2.1) includes a remote device communication interface (2.1.4), and the master module (2.1) is configured to receive at least one lighting pattern via the remote device communication interface (2.1.4). **Claim 4** The illumination system (1) according to any one of claims 1 to 3, wherein the master module (2.1) includes a plurality of sensors (9), each of the plurality of sensors (9) is configured to provide respective sensor signals depending on at least one environmental parameter, and the master module (2.1) is configured to control the operation of the plurality of lighting elements (6) of at least one of the plurality of modules (2) depending on the sensor signals of the plurality of sensors (9). **Claim 5** Each of the plurality of modules (2) is configured to store a plurality of available lighting patterns, the master module (2.1) is configured to generate respective selection commands for each module (2), and each module (2) is configured to select, depending on the respective selection commands, one of the respective available lighting patterns as the respective active lighting pattern. The lighting system (1) according to any one of claims 1 to 4.

6. The lighting system (1) according to any one of claims 1 to 5, wherein the lighting system (1) is configured to transmit lighting patterns from the master module (2.1) to a plurality of the slave modules (2.2).

7. Each of the modules (2) is configured to store its own unique module identifier and to transmit the respective unique module identifier to at least one other module among the plurality of modules (2). The lighting system (1) according to any one of claims 1 to 6.

8. The control unit (4) of the master module (2.1) is configured to store a layout map, and the layout map reflects the position of each module with respect to each other module (2). The lighting system (1) according to any one of claims 1 to 7.

9. Each of the modules (2) includes a plurality of mechanical module interconnection interfaces (2.3), and each of the mechanical module interconnection interfaces (2.3) is configured to mechanically interconnect the respective module (2) with an adjacent module (2). The lighting system (1) according to any one of claims 1 to 8.

10. The lighting system (1) according to any one of claims 1 to 9, wherein each of said modules (2) has a footprint that enables planar filling of a wall or ceiling by said plurality of modules (2), or has the same footprint.

11. The lighting system (1) according to claim 10, wherein each of said modules (2) has a footprint corresponding to an equilateral triangle, a rectangle, a square, or a regular hexagon.

12. The lighting system (1) according to any one of claims 1 to 11, wherein said module (2) has a substantially flat or planar front face (2.4) in each case.

13. The lighting system (1) according to any one of claims 1 to 12, wherein said power distribution interface (7.1) includes a plurality of power distribution interface connectors (7.1.1), and each of said plurality of power distribution interface connectors is configured for simultaneous connection with said power receiving interface (2.2.1) of a respective different slave module (2.2).

14. The lighting system (1) according to claim 13, wherein said plurality of power distribution interface connectors (7.1.1) are arranged on different sides of said master module (2.1).

15. Each of said power receiving interfaces (2.2.1) of at least a plurality of slave modules (2.2) includes a plurality of power receiving interface connectors (2.2.1.1), and each of said plurality of power receiving interface connectors (2.2.1.1) is configured to be selectively connected to said power distribution interface (7.1) or a power distribution interface connector (7.1.1), or to be selectively connected to a power receiving interface connector (2.2.1.1) of another slave module (2.2). The lighting system (1) according to any one of claims 1 to 14.

16. The lighting system (1) according to claim 15, wherein the plurality of power receiving interface connectors (2.2.1.1) are arranged on different sides of each of the slave modules (2.2).

17. A master module (2.1) for use in the lighting system (1) according to any one of claims 1 to 16.

18. A slave module (2.2) for use in the lighting system (1) according to any one of claims 1 to 16.

19. Use of the lighting system (1) according to any one of claims 1 to 16 and / or the master module (2.1) according to claim 17 and / or the slave module (2.2) according to claim 18 for irradiating a room.

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