Field of the invention

The present invention relates to a lighting assembly, more particularly a lighting assembly with lighting and ventilating properties. The invention further relates to a mounting piece for a module, particularly a lighting module.

Background

Ventilating of a space has long been taking place. It is important to keep the air in a building healthy, wherein air is discharged and/or supplied. In order to provide such a ventilation in a building use is often made of controlled ventilation systems and ventilation grates. This has the drawback that these ventilation grates are deemed aesthetically inferior, particularly when clumps of dust accumulate on the grates. In addition, the grates take up a part of the surface of a wall or ceiling in which the ventilation grates are mounted. This has the drawback that less space is available for placing furniture, decorative items or another functional module.

Attempts have already been made to provide a hidden ventilation system. A first example hereof is provision of a ventilation grate above a cupboard and out of view. Another example is to combine the ventilation with a light fixture in order to provide a light-ventilation fixture.

The existing light-ventilation fixtures however have drawbacks: not only is it complex to mount them on the ceiling, they are also difficult to manufacture from a production engineering viewpoint, for instance due to a large number of components. They are additionally also difficult to set so as to provide a well-distributed ventilation of a space. Several known light-ventilation fixtures make use of an electric fan whereby the ventilation flow can be controlled. Such an assembly however has the drawback that the electric fan makes an undesired sound.

Summary

The object of embodiments of the invention is to reduce or solve the above stated problems. More particularly, the object of embodiments of the invention is to provide a simplified lighting assembly with ventilation option which for instance allows an easy control of the air throughflow and which can be produced and mounted in simple manner from a production engineering viewpoint.

An embodiment of the invention provides for this purpose a lighting assembly with a lighting module, a first valve piece, a second valve piece, and fastening means for coupling the lighting module to the first and/or the second valve piece. The first valve piece is intended to be fastened fixedly in a wall, such as a ceiling, and to be connected to a ventilation pipe for admitting an airflow through and/or along the first valve piece. The second valve piece is mounted movably relative to the first valve piece, all this such that an air throughflow through and/or along the first and second valve piece is controllable by moving the second valve piece relative to the first valve piece. The fastening means comprise a shaft part which preferably realizes a mutual coupling of the first valve piece, the second valve piece and the lighting module.

Embodiments of the invention are based on the insight that it is important to provide a space with a desired quantity of clean air. For this purpose it must be possible to control the air flow rate of the air being supplied to the space and/or discharged from the space in correct manner. By providing the above described lighting assembly in a wall of the space, for instance in a wall and/or a ceiling, the flow rate can be controlled in simple manner.

Embodiments are further based on the insight that the flow rate control can be provided with a simple lighting assembly with a small number of components, wherein complex components are avoided. Not only can this facilitate the production process of the components of the lighting assembly, it can also simplify the mounting process of the assembly in a wall.

The shaft part preferably protrudes through or into the first and second valve piece and in this way fastens them. In this way the components of the assembly can be connected in simple manner.

In a possible embodiment the second valve piece is clamped between the first valve piece and the lighting module at the position of the shaft part, or the first valve piece is clamped between the second valve piece and the lighting module at the position of the shaft part.

The first and/or the second valve piece preferably has a jacket which at least partially surrounds the lighting module.

The first valve piece is preferably provided with at least one first ventilation hole and the second valve piece is preferably provided with at least one second ventilation hole, and the second valve piece is preferably mounted movably relative to the first valve piece such that an overlap between the at least one first ventilation hole and the at least one second ventilation hole is controllable. In this way the air throughflow flowing via the overlap through the ventilation holes can be set correctly, for instance in accordance with the volume and/or surface area of the space to be ventilated.

In an embodiment the second valve piece is mounted rotatably around a central axis which coincides with an axis of the shaft part. By designing the assembly in this way it is ensured that the air flow rate through and/or along the first valve piece can be controlled in simple manner with a simple rotation of the second valve piece. In a preferred embodiment the axial position of the second valve piece remains substantially constant during a rotation thereof.

In an embodiment the second valve piece has a second wall which makes contact with a first wall of the first valve piece associated therewith, wherein the at least one second ventilation hole lies in the second wall and the at least one first ventilation hole lies in the first wall. It is hereby ensured that there is no space for draught holes and/or draught paths along which air can flow in uncontrolled manner. The assembly is preferably configured such that the first valve piece and the second valve piece can slide over each other along the second and first wall.

In an embodiment the second valve piece is provided with a first end part which lies against or close to the first valve piece, a jacket which extends from the first end part and which at least partially surrounds the lighting module, and open second end. The second valve piece is rotatable by manipulation of the jacket by an operator. Because the assembly is designed in this way, the operator can easily set the flow rate in that the operator has easy access to the jacket. The air flow rate can hereby be adjusted both before the assembly is placed in a wall and after the assembly is placed in the wall.

In an embodiment the lighting module comprises a housing, a light source arranged in the housing and a connecting element for connecting the housing to the shaft part.

In an embodiment the connecting element comprises a hinge, such that the housing is orientable. In this way the direction of a light beam emitted by the light module can be adjusted.

In an embodiment the shaft part runs through the centre of the first and second valve piece. By having the shaft part run through the assembly in this way these components of the assembly can be connected in simple manner without making use of complex components.

In an embodiment the first valve piece has a jacket part which extends around the second valve piece, wherein the jacket part bounds a passage with a variable section, preferably a section with a surface area which decreases, for instance gradually or in steps, in accordance with the distance to the lighting module. The second valve piece is movable along an axis of the jacket part. By designing the first valve piece with the jacket part such that the jacket part surrounds the second valve piece, it is ensured that the air throughflow between the jacket part and the second valve piece can be adjusted by moving the second valve piece. Since the jacket part narrows, for instance obliquely or in steps and for instance in upward direction, the effective air throughflow space between the second valve piece and the jacket part can be adjusted. The skilled person will appreciate that the movement of the second valve piece can be selected from: a translation or a combination of a translation and a rotation, for instance a translating movement in a direction parallel to the central axis, for instance using a screw thread.

In an embodiment the shaft part comprises a threaded rod. It is preferably the case that the lighting module is provided with a bore which is configured to co-act with the threaded rod. The second valve piece is preferably provided with a bore which is configured to co-act with the threaded rod, such that the second valve piece is movable upward/downward along the threaded rod. The skilled person will appreciate here that upward refers to the direction toward the wall and downward the direction away from the wall. In an embodiment it is the case that the side wall of the jacket part tapers obliquely or in steps in central direction and toward an upper end of the first valve piece, wherein the upper end is intended to be directed toward the wall. In an embodiment the shaft part is a hollow shaft part with a throughfeed channel which is for instance configured to accommodate electric cabling. In this way the lighting module can be provided with current, which can be supplied via the electric cabling.

In an embodiment the assembly comprises a mounting piece. The mounting piece preferably has a jacket which is provided, preferably at an outer end thereof, with at least one outward directed flange in order to form at least one stop surface which is intended to lie against a wall, such as a ceiling, when the mounting piece is in the position in which it is mounted in the wall. An installer can hereby build the assembly into a wall opening in simple and neatly finished manner.

The first valve piece is preferably provided with a connecting means for connecting the first valve piece to the mounting piece, wherein the connecting means is preferably selected from: a click- fit system, a sealing ring. A click-fit system ensures that the first valve piece can be built into the mounting piece in rapid and simple manner. The sealing ring ensures that the first valve piece can clamp itself in the mounting piece and has the advantage that no undesired airflow can flow between the first valve piece and mounting piece.

The connecting means preferably comprises at least two resilient elements which are preferably formed integrally with the first valve piece, which resilient elements are configured to coact with corresponding notches of the mounting piece. In this way an installer can insert the first valve piece into the mounting piece in rapid and simple manner without using tools.

In an embodiment the second valve piece is provided with a narrowed portion, for instance for carrying the airflow in the direction of the lighting module. In this way the airflow can also contribute to the discharge of heat of the lighting module. A cooling can thus be provided to the lighting module, whereby the lifespan thereof can be extended.

The first valve piece is preferably configured to supply or discharge an airflow of a ventilation system, wherein the first and second valve piece are preferably substantially wholly concealed in a wall, for instance a ceiling, and for instance in a mounting piece which is arranged in the wall.

In an embodiment the second valve piece is provided with a central part and one or more movable blades, wherein the shaft part preferably runs through the central part. The central part and the one or more movable blades are preferably provided with a coupling mechanism, for instance with toothed wheels, which is configured such that the position of the one or more movable blades is controllable by rotating the central part, preferably around the shaft part. In this way the air flow rate can be adjusted by adjusting the position of the one or more movable blades.

In a possible embodiment the second valve piece is an integrally formed part. In another possible embodiment the second valve piece comprises a plurality of mutually coupled parts.

In a preferred embodiment an axial position of the second valve piece, as seen along an axis of the shaft part, remains substantially constant during movement thereof. In other variants another functional module, and particularly another electrical module, can be provided in the assembly instead of a lighting module. The functional module can for instance comprise one or more of the following elements: a camera, a loudspeaker, a light source, a sensor, such as for instance a motion sensor or a smoke detector, a filter.

In an embodiment the lighting module is mounted in independently rotatable manner, wherein the rotation of the lighting module does not cause rotation of the second valve piece, and wherein the functional module is thus rotated into a desired position without affecting the position of the second valve piece.

In an embodiment the at least one first ventilation hole is bounded by a peripheral wall with a height hl, wherein the height hl is smaller than 2 cm, preferably smaller than 1.5 cm, still more preferably smaller than 1 cm, still more preferably smaller than 0.5 cm and/or the at least one second ventilation hole is bounded by a peripheral wall with a height h2, wherein the height h2 is smaller than 2 cm, preferably smaller than 1.5 cm, still more preferably smaller 1 cm, still more preferably smaller than 0.5 cm.

A further aspect of the invention provides a method for providing ventilation in a space (R), wherein the method comprises the following steps of: providing a lighting assembly with one or more features as described here and assembling and mounting the lighting assembly in a wall, such as a ceiling, of the space; connecting the first valve piece to a ventilation pipe for supplying or discharging an airflow; setting an air throughflow through and/or along the first and second valve piece of the lighting assembly by moving the second valve piece relative to the first valve piece.

In an embodiment of the method the airflow is provided by an airflow generating means lying outside the lighting assembly, and comprises the step of setting the air throughflow on the basis of a distance between the airflow generating means and the lighting assembly and/or on the basis of a volume of the space and/or on the basis of a surface area of the space. This has the advantage that the space is subjected to a lesser extent to sound coming from the airflow generating means.

A further aspect of the invention relates to a mounting piece intended to be built into a wall, such as a ceiling wall, for the purpose of mounting a module, such as a lighting module. The mounting piece comprises an outer jacket and an inner jacket received therein. The outer and inner jacket are dimensioned and arranged such that an opening between a first end of the outer jacket and a first corresponding end of the inner jacket forms a ventilation mouth; wherein the mounting piece comprises a connecting wall between the inner jacket and the outer jacket, at a distance from the first end; wherein the outer jacket is provided between the first end and the connecting wall with at least one ventilation opening for connecting a ventilation pipe. The further aspect is based on the insight that the installation of a module, particularly a functional module such as for instance a lighting module, a camera module, a sound module, in a wall can be facilitated and ventilation can simultaneously be provided.

The ventilation mouth can thus supply and/or discharge air to/from a space. This air is supplied/discharged via the ventilation pipe. The mounting piece is preferably built into the wall of a dropped ceiling (VP), also known as a “false” ceiling or a “lowered” ceiling. This is understood to mean a ceiling wherein a space is made between the overlying floor and the ceiling by means of ceiling plates and/or ceiling profiles and a suspension system. The dropped ceiling lies at a distance from the overlying floor.

The inner jacket is preferably configured to receive the module therein. In this way an installer can mount the module in the mounting piece in simple manner. “Mounting” is here understood to mean: a module being wholly or partially received in the mounting piece, but also the module being suspended under the mounting piece, for instance via a suspension cable running through the mounting piece. The module can for instance be configured to be received directly in the mounting piece, for instance via a snap-fit mechanism. According to an alternative, the inner jacket can be configured with a suspending means to which an installer can fasten the module.

It is preferably the case that the inner jacket, the outer jacket and the connecting wall are manufactured integrally from one piece. Hereby, the production of the mounting piece is simplified and the components of the mounting piece need not be assembled separately.

In an embodiment the inner jacket bounds a space in which the module is at least partially receivable.

In an embodiment the outer jacket is provided with an outward directed flange for forming a stop surface intended to lie against a wall, such as a ceiling.

In an embodiment the flange is provided with a plurality of openings. Such openings, for instance formed as radially directed elongate slots, can be used for throughfeed of throughfeed elements, for instance a screw, therein, such that the mounting piece can be fastened to the ceiling.

In an embodiment a surface area of the ventilation mouth varies less than 20% from a surface area of the at least one ventilation opening in the outer jacket.

In an embodiment a peripheral edge of the ventilation opening extends in a first plane; and a peripheral edge of the ventilation mouth extends in a second plane. The first plane and second plane are oriented substantially perpendicularly of each other. This has the advantage that the distance between the dropped ceiling and overlying floor need not be great.

In an embodiment the inner jacket and/or the outer jacket has a substantially cylindrical form. The inner jacket and/or the outer jacket can however also have a different form, for instance prismatic, conical and so on. The section of the inner and/or outer jacket can be constant or variable, as seen along an axis of respectively the inner and/or outer jacket. None of the following elements are preferably present in the lighting assembly and/or mounting piece: a fan, an electrically controlled airflow generating means. Such a means can however be connected to the ventilation opening in the outer jacket.

The inner dimensions of the mounting piece preferably correspond at least partially with outer dimensions of the module in order to preclude or prevent an airflow therebetween.

A further aspect of the invention relates to a method for building a module into a wall, such as a ceiling wall, wherein the method comprises the following steps of: providing a wall opening; mounting the mounting piece as described above in the wall; and mounting a module in the mounting piece, for instance by fastening in the inner jacket or by suspension, wherein a suspending means runs through the inner jacket.

The wall is preferably a ceiling wall of a dropped ceiling. In this way the functionality of the module, for instance lighting and/or detection and/or monitoring, can be provided in a space in combination with a supply and/or discharge of air, this in a compact manner.

Embodiment according to the latter two aspects discussed above are described in the following clauses. . Mounting piece (60) intended to be built into a wall for mounting of a module (300), such as a lighting module, comprising an outer jacket (61) and an inner jacket (62) received therein; wherein the outer and inner jacket are dimensioned and arranged such that an opening between a first end of the outer jacket and a first corresponding end of the inner jacket forms a ventilation mouth (63); wherein the mounting piece comprises a connecting wall (64) between the inner jacket and the outer jacket, at a distance from the first end; wherein the outer jacket is provided between the first end and the connecting wall with at least one ventilation opening (65) for connecting a ventilation pipe (VB). . Mounting piece according to the foregoing clause, wherein the inner jacket is configured to receive the module therein. . Mounting piece according to clause 1 or 2, wherein the inner jacket, the outer jacket and the connecting wall are manufactured integrally from one piece. . Mounting piece according to any one of the foregoing clauses, wherein the inner jacket bounds a space in which the module is at least partially receivable. . Mounting piece according to any one of the foregoing clauses, wherein the outer jacket (61) is provided with an outward directed flange (601) to form a stop surface intended to lie against a wall, such as a ceiling. . Mounting piece according to the foregoing clause, wherein the flange (601) is provided with a plurality of openings (602). Mounting piece according to any one of the foregoing clauses, wherein the inner jacket has an inner wall which is provided with connecting means (67), which are configured to connect the module to the mounting piece. Mounting piece according to any one of the foregoing clauses, wherein a surface area of the ventilation mouth varies less than 20% from a surface area of the at least one ventilation opening in the outer jacket, preferably less than 15%, still more preferably less than 10%. Mounting piece according to any one of the foregoing clauses, wherein a peripheral edge of the ventilation opening (65) extends in a first plane; and wherein a peripheral edge of the ventilation mouth (63) extends in a second plane; and wherein the first plane and second plane lie substantially perpendicularly of each other. Mounting piece according to any one of the foregoing clauses, wherein the inner jacket has a substantially cylindrical form. Mounting piece according to any one of the foregoing clauses, further comprising a flow regulation means (700) configured to adjust a flow passage between the ventilation mouth (63) and the at least one ventilation opening (65). Mounting piece of according to previous claim, wherein the flow regulation means (700) comprise a moveable flow adjustment part (720) configured to define in a first and second position a first and second flow passage between the ventilation mouth (63) and the at least one ventilation opening (65), said first and second flow passage being different. Mounting piece of according to previous claim, wherein the moveable flow adjustment part (720) is arranged between the outer jacket (61) and the inner jacket (62). Mounting piece according to claim 12 or 13, wherein the moveable flow adjustment element (720) is a disc-like element with at least one opening (721) which is arranged rotatably around a central axis of the inner jacket. Mounting piece according to any of the claims 12-14, wherein the flow regulation means (700) comprise a further flow adjustment part (710) arranged between the outer jacket (61) and the inner jacket (62) and configured to cooperate with the moveable flow adjustment part to define the first and second flow passage. Mounting piece according to the previous claim, wherein the further flow adjustment element (710) is a disc-like element with at least one opening (711) which is arranged between the outer jacket and the inner jacket. Mounting piece according to any one of the foregoing clauses, wherein the inner jacket (62) comprises a removable portion (301a’) configured to receive a functional module, preferably a light module (300). 8. Mounting piece according to claim 15 or 16 and 17, wherein the moveable flow adjustment element (720) and the further flow adjustment element (710) are removable arranged between the removable portion (301a’) and the rest of the inner jacket (62). 9. Mounting piece of according to previous claim, wherein the flow regulation means (700) comprise a flow adjustment part removably arranged between the inner jacket and the outer jacket, such that the flow adjustment part can be selected from a set of different flow adjustment parts. 0. Mounting piece according to any one of the foregoing clauses, wherein the inner jacket (62) is removably connected to the connection wall (64). 1. Mounting piece according to any one of the foregoing clauses, wherein the outer jacket has a shape which is more curved at an upper side opposite the ventilation opening (65) than at an upper side where the ventilation opening is provided. 2. Mounting piece according to any one of the foregoing clauses, wherein the ventilation opening is delimited by a tube-like portion (65a). 3. Method for building a module into a wall, such as a ceiling wall, wherein the method comprises the steps of: providing a wall opening; mounting the mounting piece according to any one of the foregoing clauses in the wall; and mounting a module, for instance by fastening in the inner jacket or by suspension, wherein a suspending means (330) runs through the inner jacket. 4. Method according to the foregoing clause, wherein the wall is a ceiling wall of a dropped ceiling.

Brief description of the figures

The present invention will be further elucidated on the basis of a number of by no means limitative exemplary embodiments of assemblies according to the invention with reference to the accompanying drawings.

Figure 1 shows a perspective view of an embodiment of a lighting assembly in assembled state, as seen from an underside.

Figure 2 shows a perspective view of the lighting assembly of figure 1 in assembled state, as seen from an upper side.

Figure 3 shows a top view of the lighting assembly of figure 1 in assembled state.

Figure 4 shows a cross-section of the lighting assembly shown in figure 3 along section line AA. Figure 5 shows an exploded perspective view of the lighting assembly of figure 1.

Figures 6-8 show a second embodiment of a lighting assembly. Figure 6 shows a perspective view of an embodiment of a lighting assembly. Figure 7 shows a bottom view of the lighting assembly shown in figure 6. Figure 8 shows a cut-away perspective view of the lighting assembly of figure 7. Figures 9-11 show a third embodiment of a lighting assembly. Figure 9 shows a cut-away perspective view of a lighting assembly. Figures 10 and 11 show components of the lighting assembly of figure 9 in more detail.

Figure 12 shows a cross-sectional view of the lighting assembly shown in figure 9 in assembled state and built into a wall.

Figure 13 shows a schematic illustration of an embodiment of a lighting-ventilation system which provides ventilation to a space R.

Figure 14 shows a perspective view of an embodiment of a mounting piece with a lighting module. Figure 15 shows a bottom view of the mounting piece of figure 14.

Figure 16 shows a cross-sectional view of the mounting piece of figure 15 along section line AA and a ventilation pipe.

Figure 17 shows the mounting piece shown in figure 14, built into a false ceiling, wherein a module and ventilation pipe are connected to the mounting piece.

Figure 18 shows a perspective view of an embodiment of a lighting assembly.

Figure 19 shows a perspective view of the lighting assembly of figure 18, as seen from an upper side. Figure 20 shows a cut-away perspective view of the lighting assembly of figure 18. Figure 20A shows a detail view of the lighting assembly of figure 20.

Figures 21, 22, 23, 24, 25 A, 25B, 25C, 26, 27A and 27B illustrate a further embodiment of a lighting assembly. Figure 21 shows an exploded perspective view of the lighting assembly. Figure 22 is a perspective view of the first valve piece. Figure 23 is a perspective view of the second valve piece. Figure 24 is a perspective view of the mounting piece. Figures 25 A, 25B and 25C show perspective views of the complete lighting assembly in the assembled state, the lighting assembly without the mounting piece, and the lighting assembly without the mounting piece and the second valve piece. Figure 26 is an exploded perspective view of the lighting module. Figures 27A and 27B are sections along two diametral planes of the assembly of Figure 25 A.

Figure 28 is an exploded perspective view of an embodiment of an assembly including a mounting piece with flow regulating means and an auxiliary mounting piece of a lighting module or other functional module.

Figures 29A, 29B and 29C show a perspective view looking at the bottom, a perspective view looking at the top, and a bottom view of the assembly of Figure 28 in the assembled state, respectively.

Figures 30A and 30B are a perspective view and a side view of a lighting assembly including a flow regulating means and a lighting module.

Figures 31-33 illustrate perspective views of another embodiment of an assembly including a mounting piece with flow regulating means and an auxiliary mounting piece of a lighting module or other functional module. Detailed description of exemplary embodiments

Corresponding elements with the same or similar properties and advantages are designated with the same reference numerals.

Figures 1-5 illustrate a first embodiment of a lighting assembly 1000. The lighting assembly 1000 comprises a lighting module 300, a first valve piece 100, a second valve piece 200, fastening means 400 for coupling the lighting module 300 to the first valve piece 100 and/or to the second valve piece 200, and a mounting piece 600 which is intended to be prearranged in a wall and is configured to receive the first valve piece 100, the second valve piece 200 and the lighting module 300. Figures 1 and 2 show the lighting assembly in assembled state, when looking at respectively an underside where the lighting module 300 is visible and an upper side were a part of the first and second valve piece 100, 200 are visible. Figure 5 shows the assembly 1000 in disassembled state.

The first valve piece 100 is intended to be fastened fixedly in a wall, such as a ceiling, here by means of the mounting piece 600, and to be connected to a ventilation pipe for the purpose of admitting an airflow through the first valve piece 100. The second valve piece 200 is mounted movably relative to the first valve piece 100, all this such that an air throughflow through the first and second valve piece 100, 200 is controllable by rotating the second valve piece 200 relative to the first valve piece 100. As can be seen best in Figures 4 and 5, the fastening means 400 comprise a shaft part 401 which here realizes a mutual coupling of first valve piece 100, second valve piece 200 and lighting module 300.

The shaft part 401 protrudes through the first and second valve piece 100, 200 and in this way fastens first valve piece 100 to second valve piece 200. At the position of shaft part 401 the second valve piece 200 is clamped between first valve piece 100 and lighting module 300. In the illustrated embodiment the shaft part 401 runs through the centre of the first and second valve piece 100, 200, and the throughflow is controlled by rotating second valve piece 200 relative to first valve piece 100. It is however also possible to envisage second valve piece 200 being arranged slidably relative to first valve piece 100, and shaft part 401 protruding for instance through an elongate slot in second valve piece 200, all this such that the position of shaft part 401 relative to the slot can be set by sliding second valve piece 200 relative to shaft part 401. In the illustrated embodiment shaft part 401 comprises a threaded rod 410 and a head 411, and lighting module 300 is provided with a bore 310 which is configured to co-act with the threaded rod 410, see Figure 5. Shaft part 401 can optionally be a hollow shaft part with a throughfeed channel 402 which is for instance configured to accommodate an electric wire or a control channel (for instance a data cable), see Figure 4. The skilled person will however appreciate that shaft part 401 can also be embodied without head, and that nuts can for instance be provided for fastening the upper and/or lower end of shaft part 401.

In the illustrated embodiment the second valve piece 200 has a jacket 203 which at least partially surrounds the lighting module 300. The lighting module 300 here protrudes partially downward from jacket 203, and lighting module 300 is orientable. For this purpose the necessary space is provided between jacket 203 and an outer wall of lighting module 300. It is however also possible for the lighting module to be arranged in a fixed position and to be surrounded partially or wholly by the jacket 203 here. In yet another possible embodiment the lighting module 300 is suspended at a distance from a ceiling and only a part of the suspending means run through jacket 203.

In the embodiment illustrated in Figures 1-5 the first valve piece 100 is provided with at least one first ventilation hole 122, preferably a plurality of ventilation holes 122, and the second valve piece 200 is provided with at least one corresponding second ventilation hole 222. Second valve piece 200 is mounted movably relative to first valve piece 100 such that an overlap between the at least one first ventilation hole 122 and the at least one second ventilation hole 222 is controllable, see Figure 2, 3 and 5. More specifically, second valve piece 200 is mounted rotatably around a central axis which coincides with an axis of shaft part 401, and the flow rate can thus be controlled in simple manner by rotating the second valve piece 200. Second valve piece 200 has a second wall 223 which makes contact with a first wall 123 of the first valve piece associated therewith, wherein the at least one second ventilation hole 222 lies in the second wall 223, and the at least one first ventilation hole 122 lies in the first wall 123.

Second valve piece 200 is provided with a first end part 201, formed here by the above stated second wall 223, which lies against or close to the first valve piece 100, the jacket 203 which extends from first end part 201 and here partially surrounds the lighting module 300, and an open second end 202. Second valve piece 200 is rotatable by manipulation of jacket 203, and particularly the second end 202 thereof, by an operator/installer.

In the embodiment illustrated in Figures 1-5 the lighting module 300 comprises a housing 301, a light source 302 arranged in the housing 301 and a connecting element 303, provided here with a bore 310, for connecting the housing 301 to the shaft part 401. In a possible embodiment the connecting element 303 comprises a hinge 304, such that housing 301 is orientable. First valve piece 100 has a jacket part 150 which extends partially around second valve piece 200, wherein the jacket part 150 has an axis which coincides here with the axis of the jacket 203 of second valve piece 200.

The mounting piece 600 has a jacket 650 which is provided, preferably at an outer end thereof, with at least one outward directed flange 601 to form at least one stop surface intended to lie against a wall, such as a ceiling, when mounting piece 600 is in the position in which it is mounted the wall. First valve piece 100 is provided with a connecting means 110 for connecting first valve piece 100 to the mounting piece 600, wherein the connecting means 110 is preferably selected from a click-fit system and/or a sealing ring. Connecting means 110 comprises here a plurality of resilient elements 110 which are preferably formed integrally with the first valve piece 100 and which are configured to co-act with corresponding notches 667 which are provided on an upper end of mounting piece 600. The notches 667 are here formed by arranging recesses in an upper edge of the jacket 650 of mounting piece 600.

Because the lower end 202 of jacket 230 is accessible, the second valve piece 200 can be rotated around the central shaft part 401 in order to adjust an overlap between the ventilation holes 122, 222 of first valve piece 100 and second valve piece 200, whereby the flow rate of an airflow LS can be controlled. The first wall 123 in which the ventilation holes 122 are provided preferably makes contact with second wall 223 in which the ventilation holes 222 of second valve piece 200 are provided. In this way the airflow is sent through the ventilation holes 122, 222 without flow losses occurring. Figure 2 shows an open position which allows a maximum air flow rate. The airflow can flow in both directions, so that the lighting assembly 1000 can be used to provide both an air supply in a space and an air discharge. The air flow rate can be reduced by rotating second valve piece 200, whereby the second wall 223 of second valve piece 200 slides over the first wall 123 of first valve piece 100. The displacement makes the overlap of ventilation holes 122, 222 smaller, so that less air can typically flow therethrough. Second valve piece 200 can be easily rotated in that the lower portion 202 is accessible, even after the assembly 1000 has been mounted in a wall.

For mounting, the second valve piece, the first valve piece and the lighting module 300 can be mutually coupled via the fastening means 400, and the thus formed assembly can be snapped into the mounting piece 600 in simple manner using the integrated connecting means 110, 667. Clever design of the connecting means 110, 667 of first valve piece 100 and/or mounting piece 600 enables the first valve piece 100 to secure itself easily in mounting piece 600, and an installer can assemble the lighting assembly 1000 and provide it on or in a wall W in simple manner. Another example of a suitable connecting means 110 is the click-fit system which is shown in Figure 10 and will be further discussed below. The mounting piece (not shown in Figure 10) can here be designed correspondingly to receive one or more resilient arms 110 which are arranged on first valve piece 100, all this such that the first valve piece 100 can clamp itself fixedly in the mounting piece 600. The mounting piece 600 is further designed to be inserted into a wall opening in simple manner, wherein the flange 601 is provided to be placed against a wall surface.

Figure 3 shows a bottom view of the lighting assembly 100 and shows that the flange 601 is configured with slots 602. The flange 601 surrounds the jacket 650 of mounting piece 600 on a lower edge thereof and is formed integrally with jacket 650. In an alternative embodiment, as for instance shown in figure 8, the flange 601 is a separate component which can be connected to jacket 650 with a connecting means 601a, such as for instance a screw. In yet other embodiments no flange is provided, but the mounting piece 600 is configured to receive a finishing ring (not shown) which is arranged after placing of the mounting piece 600. Finishes with finishing material such as paint and plaster can optionally be applied. Figure 12 illustrates that a finishing material Wp can be provided, which is applied after insertion of mounting piece 600 in order to neatly finish the whole. In other embodiments the lighting assembly 1000 is arranged directly, optionally seamlessly, in a wall opening, optionally with further finishing.

Figure 4 shows that the jacket 203 is configured with a narrowed portion 230 which guides the air toward the lighting module 300, whereby heat discharge can also take place, particularly a heat discharge via convection in addition to the typically already present heat conduction by thermally conductive materials of components of lighting module 300. The dimensions of outer jacket 150 of first valve piece 100 preferably substantially correspond to the dimensions of the inner wall 604 of jacket 650 of mounting piece 600, so that there is no space between these walls 150, 604 for an undesired airflow. In determined embodiments a seal (not shown) can further be provided, for instance a rubber sealing ring.

As shown in Figure 4, the mounting piece 600 is formed integrally with the flange 601. Flange 601 can also be connected to mounting piece 600 in modular manner, for instance using a connecting element 601a, for instance a screw as shown in figure 8. Flange 601 is typically used to lie against the wall during insertion of the mounting piece 600 into a wall opening of a wall W and/or into a ventilation pipe VB. The dimensions of mounting piece 600 are preferably substantially equal to the dimensions of the wall opening and/or of the ventilation pipe, such that the mounting piece 600 fits therein and/or such that the mounting piece 600 can be clamped fixedly therein. The second valve piece 200 preferably has a height h3, measured along an axis of shaft part 401, and a diameter d3 which is measured at a bottom end of the second valve piece 200 perpendicularly of the axis of the shaft part, wherein the height h3 > 0.4 * diameter d3. Still more preferably, it is the case that h3 > 0.5 * d3, or h3 > 0.6 * d3.

Figure 5 shows that first valve piece 100 and second valve piece 200 can be fastened with the fastening means 400. The shaft part 401 runs along a central axis of lighting assembly 1000 and thus connects first valve piece 100 to second valve piece 200 and lighting module 300 via connecting element 303. Mounting accessories such as washers 403a and 403b can optionally be provided. The mounting accessories can further provide for a seal between the central shaft part 401 and the central openings in the first and second valve 100, 200, so that the airflow does not flow via the central opening and only via the overlap of the ventilation holes 122, 222.

The lighting module 300 typically comprises one or more of the following elements: a light source 302, such as one or more light-emitting diodes LED, an optical element such as a lens, a reflector, a collimator, and so on. In further embodiments the lighting module 300 can be replaced by another functional module, or be expanded with functions other than lighting. The functional module can for instance comprise one or more of the following elements: a sensor, such as an image or sound sensor, a motion sensor, a smoke detector, a loudspeaker, a camera, and so on.

Figures 21, 22, 23, 24, 25 A, 25B, 25C, 26, 27A and 27B illustrate a further embodiment of a lighting assembly which is similar to the embodiment of Figures 1-5 and for which the same reference numerals have been used to refer to similar components.

The lighting assembly 1000 comprises a lighting module 300, a first valve piece 100, a second valve piece 200, and fastening means 400 for coupling the lighting module 300 to the first and/or the second valve piece 100, 200 and/or to a mounting element mounted in or on a wall, such as mounting piece 600 illustrated in Figure 21. The first valve piece 100 is intended to be connected to a ventilation pipe for admitting an airflow through and/or along the first valve piece. The first valve piece 100 may be arranged in or on a wall, such as a ceiling, e.g., using a mounting piece 600 as indicated in Figure 21. The second valve piece 200 is mounted movably relative to the first valve piece 100, such that an air throughflow through and/or along the first and second valve piece 100, 200 is controllable by moving the second valve piece 200 relative to the first valve piece 100.

The fastening means may comprise a shaft part 401, see Figures 27A and 27B which preferably realizes a mutual coupling of the first valve piece 100, the second valve piece 200 and the lighting module 300. The shaft part 401 may be a separate part or may an integral part of any one of the first valve piece 100, the second valve piece 200 and the lighting module 300. The shaft part 401 may protrude through or into the first and second valve piece 100, 200 and in this way fastens them, while the second valve piece 200 remains movable, preferably rotatable, relative to the first valve piece 100. In the illustrated embodiment, the second valve piece 200 is clamped between the first valve piece 100 and the lighting module 300 at the position of the shaft part 401. Preferably, the second valve piece 200 is mounted rotatably around a central axis which coincides with an axis of the shaft part 401.

In other non-illustrated embodiments, the second valve piece may me translatable with respect to the first valve piece, and the fastening means do not comprise a shaft part. For example, the second valve piece could have a guide element which is slidable in a groove of the first valve piece. In such an embodiment the fastening means comprise the guide element and the groove.

The second valve piece 200 has a jacket 203 which at least partially surrounds the lighting module 300 in the assembled state, see Figure 25 A and 25B.

The first valve piece 100 is provided with at least one first ventilation hole 122, here six ventilation holes 122, and the second valve piece 200 is provided with at least one second ventilation hole 222, here six ventilation holes. The second valve piece 200 is mounted movably relative to the first valve piece 100 such that an overlap between the at least one first ventilation hole 122 and the at least one second ventilation hole 222 is controllable. It is noted that the ventilation holes 122, 222 may have substantially the same shape but may also have a different shape. Also, it is possible to provide a plurality of smaller openings in one of the first and the second valve pieces 100, 200, and one or more larger openings in the other one.

As shown in Figures 22, 23 and 27 A, the second valve piece 200 has a second wall 223 which makes contact with a first wall 123 of the first valve piece 100 associated therewith, wherein the at least one second ventilation hole 222 lies in the second wall 223 and the at least one first ventilation hole 122 lies in the first wall 123. As illustrated, these walls 123, 223 may rotate along each other when the second valve piece 200 is rotated around the shaft part 401. The walls 123, 223 may be flat or curved or rounded. By giving the walls 123, 223 a suitable curvature, the properties of the air flow may be improved and turbulences may be reduced. In the illustrated embodiment, the wall portions of walls 123, 223 between the ventilation holes 122, 222 form rounded shoulders between the central axis and a jacket 150, 203 of the first and second valve piece 100, 200, respectively.

The second valve piece 200 is provided with a first end part 201 comprising the wall 223 with the ventilation holes 222. The first end part 201 lies against or close to the first valve piece 100, and in particular to the wall 123 of the first wall piece 100. The second valve piece 200 further has an open second end 202 and a jacket 203 which extends from the first end part 201 to the second end 222 and which at least partially surrounds the lighting module 300. The second valve piece 200 is movable, preferably rotatable, by manipulation of the jacket 203 by an operator. Preferably, the outer diameter of the jacket 203 is less than 10% smaller than the inner diameter of the mounting piece 600, more preferably substantially the same.

Figure 26 illustrates the lighting module 300. The lighting module 300 comprises a multipart housing 301a, 301b, 301c and a light source 302 arranged at least partly in the housing 301a, 301b, 301c. In the illustrated embodiment, the lighting module 300 comprises an optical unit 320 including housing part 301c with the light source 302 and optionally further components such as a heat sink 305 like or an optical element like a reflector and/or a collimator and/or a lens (not shown). Housing parts 301a and 301b are used to mount the optical unit 320 in the mounting piece 600. Upper housing part 301b is provided with an open lower end 315 and a partially open upper end 316, so that heat from the heat sink 305 of the optical unit 320 can be carried away through the partially open upper end 316. The upper end 316 is provided with a through-hole 317 for shaft part 401, see Figure 27 A. Optionally shaft part 401 may be integrated with housing part 301b. Housing part 301b further has a jacket 318 between the open lower end 315 and the upper end 316. Lower housing part 301a has a jacket 338 between an open lower end 335 and an open upper end 336. Connecting means 319, 339 are provided to connect upper housing part 301b to lower housing part 301a. In the illustrated embodiment, the connecting means comprise a rib 319 provided at an inner wall of jacket 318 and lugs 339 provided at upper end 336. The lugs 339 are configured to engage behind rib 319 to fix lower housing part 301a to upper housing part 301b. The skilled person understands that any other suitable connecting means may be used, and that the lugs 339 could also be provided to housing part 301b and the rib 319 to housing part 301a. Optionally, further lugs 329 may be provided to optical unit 320 which can also engage behind rib 319. Optionally also other connecting elements 331, 332 may be provided to an inner wall of housing part 301a. For example, when no optical unit is present, a dummy cover may be fitted in housing part 301a, and the assembly may be used only for venting purposes. This further improves the modularity of the system.

The shaft part 401 runs through the center of the first and second valve piece 100, 200. Preferably, the shaft part 401 comprises a threaded portion, e.g., an external threaded portion configured to cooperate with a nut 403b, see Figure 21 and 27 A. Alternatively, the second valve piece and/or the lighting unit and/or the first valve piece may be provided with a threaded hole which is configured to co-act with the threaded portion. The shaft part 401 may be a hollow shaft part with a through- feed channel 402 which is for instance configured to accommodate electric cabling. The mounting piece is shown in detail in Figure 24. The mounting piece 600 has a jacket 650 which is provided, preferably at a first outer end thereof, with at least one outward directed flange 601 to form at least one stop surface intended to lie against a wall, such as a ceiling, when the mounting piece 600 is in the position in which it is mounted the wall. The first valve piece 100 is provided with a connecting means 110, here a plurality of spring-mounted lugs, for connecting first valve piece 100 to the mounting piece 600. Alternatively and/or in addition, a sealing ring may be used between the first valve piece 100 and the mounting piece 600. The resilient lugs 110 are preferably formed integrally with the first valve piece 100 and are configured to co-act with corresponding notches 667 of the mounting piece. An inner wall 604 of the mounting piece 600 may be provided with guiding channels 668 for guiding protruding portions 111 of the first valve means 100. Further, the second outer end of the jacket 650 located inside the wall may be provided with an inwardly protruding circumferential edge 666 so that portions of the first valve piece 100 abut against this edge 666 when mounted in the mounting piece 600. In the illustrated embodiment the wall 123 is provided with outwardly protruding ribs 112 and a circumferential portion of the ribs 112 will abut against the edge 666 in the mounted position as illustrated in Figure 27 A.

In use the first valve piece 100 is connected to a ventilation pipe (not shown) for supplying and discharging an airflow. An air throughflow through and/or along the first and second valve piece 100, 200 may be set by moving, and in particular rotating, the second valve piece 200 relative to the first valve piece 100.

Figures 6-8 show a second embodiment of a lighting assembly 1000. The lighting assembly 1000 comprises a lighting module 300, a first valve piece 100, a second valve piece 200, fastening means 400 for coupling the lighting module 300 to the first valve piece 100 and/or to the second valve piece 200, and a mounting piece 600 which is intended to be prearranged in a wall and is configured to receive the first valve piece 100, the second valve piece 200 and the lighting module 300. Figures 6 and 7 show the lighting assembly in assembled state, when looking at respectively a side and an underside. Figure 8 shows the assembly 1000 in disassembled state.

The first valve piece 100 is intended for fastening fixedly in a wall, such as a ceiling, here by means of mounting piece 600, and for being connected to a ventilation pipe VB for the purpose of admitting an airflow through the first valve piece 100. The second valve piece 200 is mounted movably relative to the first valve piece 100, all this such that an air throughflow through the first and second valve piece 100, 200 is controllable by rotating the second valve piece 200 relative to the first valve piece 100. As can be seen best in Figure 8, the fastening means 400 comprise a shaft part 401 which here realizes a mutual coupling of first valve piece 100 and second valve piece 200.

The shaft part 401 protrudes through the first and second valve piece 100, 200 and in this way fastens first valve piece 100 to second valve piece 200. In the illustrated embodiment the shaft part 401 runs through the centre of the first and second valve piece 100, 200, and the throughflow is controlled by rotating second valve piece 200 relative to first valve piece 100. In the illustrated embodiment shaft part 401 comprises a threaded rod 410 and a head 411. The threaded rod can be secured by a nut (not shown) or can co-act with a bore in lighting module 300, as in the variant of Figures 1 -5. It is however also possible for lighting module 300 to be fastened in mounting piece 600 in other manner. Shaft part 401 can optionally be a hollow shaft part.

First valve piece 100 has a first ventilation hole 122 and second valve piece 200 has a second ventilation hole 222. The flow rate coming from the ventilation pipe VB can be controlled by rotating the second valve piece, so that the overlap between the ventilation holes 122, 222 is adjusted. First valve piece 100 is configured with connecting means 110 for connecting first valve piece 100 to mounting piece 600. In the shown embodiment first valve piece 100 is provided with tongues 110 with dimensions corresponding to dimensions of channels 667 which are provided in the jacket 650 of mounting piece 600.

Figures 9-12 show a third embodiment of a lighting assembly 1000. The lighting assembly 1000 comprises a lighting module 300, a first valve piece 100, a second valve piece 200, fastening means

400 for coupling the lighting module 300 to the first valve piece 100 and/or to the second valve piece 200, and a mounting piece 600 which is intended to be prearranged in a wall and is configured to receive the first valve piece 100, the second valve piece 200 and the lighting module 300. Figures 10 and 12 show the lighting assembly in assembled state. Figure 9 shows the assembly 1000 in the disassembled state.

The first valve piece 100 is intended to be fastened fixedly in a wall, such as a ceiling, here by means of the mounting piece 600, and to be connected to a ventilation pipe (not shown) for the purpose of admitting an airflow through the first valve piece 100. Second valve piece 200 is mounted movably relative to first valve piece 100, all this such that an air throughflow through the first and second valve piece 100, 200 is controllable by rotating and translating second valve piece 200 relative to first valve piece 100. As can be seen best in Figure 12, the fastening means 400 comprise a shaft part

401 which here realizes a mutual coupling of first valve piece 100, second valve piece 200 and lighting module 300. The shaft part 401 protrudes through the first and second valve piece 100, 200 and in this way fastens first valve piece 100 to second valve piece 200. In the illustrated embodiment shaft part 401 runs through the centre of first and second valve piece 100, 200, and the throughflow is controlled by rotating and translating second valve piece 200 relative to first valve piece 100. In the illustrated embodiment shaft part 401 comprises a threaded rod 410 which co-acts with a bore in lighting module 300 as in the variant of Figures 1-5, and which likewise co-acts with a bore in second valve piece 200, such that second valve piece 200 is movable upward/downward along the threaded rod. Module 300 has a connecting element 303 which is configured with a bore so as to be connected to the lower part of shaft part 401. First valve piece 100 can be connected via connecting means 110 to mounting piece 600.

First valve piece 100 has the jacket part 150 which extends partially around second valve piece 200, see Figure 12, wherein the jacket part 150 bounds a passage with a variable section, preferably a section with a surfacerounsur area which decreases, for instance gradually or in steps, in accordance with the distance to the lighting module 300. Second valve piece 200 is movable along an axis (Ca) of jacket part 150, whereby the flow rate can be controlled. This is because the effective throughflow space D between second valve piece 200 and jacket part 150 can be adjusted by moving second valve piece 200 upward/downward.

Figure 12 shows the ventilation assembly in assembled state after being built into the wall W. The whole can optionally be finished with finishing materials Wp such as paint and plaster.

A method for providing a desired ventilation in a space R will be explained with reference to Figure 13. An airflow generating means LB provides an airflow LS, and this flow is carried via a network of ventilation pipes to the lighting assemblies so that clean air can be supplied to the space via the lighting assemblies. The airflow generating means is for instance an electric fan and is preferably placed outside the housing of the lighting assembly. An electric fan is preferably not present in or close to the lighting assembly, since this produces a sound which is typically considered unpleasant. The network of ventilation pipes can be built into the ceiling, above and through the ceiling or in a dropped ceiling, also known as a false ceiling. The air throughflow through ventilation assemblies 1000a, 1000b, 1000c, lOOOd is set on the basis of decision factors which are selected on the basis of for instance: the volume of the space, the surface area of the space, the distance of lighting assembly 1000 to the airflow generating means. The flow rate of the air throughflow is for instance set in accordance with the surface area and/or volume of the space. Figures 14-17 illustrate an embodiment of a mounting piece 600, intended to be built into a wall, for mounting a module 300 such as a lighting module. In this embodiment the mounting piece 600 itself provides a ventilation channel, and typically not the assembly with module 300 which is built into the mounting piece 600.

Mounting piece 600 has an outer jacket 61 and an inner jacket 62 received therein, and a connecting wall 64 between the inner jacket 62 and the outer jacket 61. The outer and inner jacket 61, 62 are dimensioned and arranged such that an opening between a first end 61a of outer jacket 61 and a first corresponding end 62a of inner jacket 62 forms a ventilation mouth 63. The connecting wall 64 extends between inner jacket 62 and outer jacket 61, at a distance from first end 61a. Outer jacket 61 is provided between the first end and the connecting wall 64 with at least one ventilation opening 65 for connecting a ventilation pipe VB. Inner jacket 62 is preferably configured to receive the module 300 at least partially therein. Inner jacket 62 can for instance have an inner wall which is provided with connecting means 67, which are configured to connect the module to the mounting piece. Inner jacket 62, outer jacket 61 and connecting wall 64 are preferably manufactured integrally from one piece.

Outer jacket 61 is preferably provided with an outward directed flange 601 to form a stop surface intended to lie against a wall, such as a ceiling. The flange 601 is preferably provided with a plurality of openings 602. Inner jacket 62 preferably has a substantially cylindrical form, although other forms are also possible.

The ventilation mouth 63 is bounded by the lower edge 62a of inner jacket 62 and the lower edge 61a of outer jacket 61. The functional module can secure itself in space 68 using connecting means 390, preferably at least one resilient element, still more preferably three resilient elements. The inner wall 62b of inner jacket 62 is preferably correspondingly designed to the connecting means 390 of functional module 300 so that the module 300 can be received in the space 68 and can secure itself therein. “Securing” is understood to mean that the module cannot fall down. The inner wall 62b can additionally or alternatively also be provided with engaging means (not shown) which can engage on the functional module so that it can be mounted in space 68. All this is preferably designed such that the functional module 300 can be connected removably to the mounting piece 600. In the shown embodiment the functional module 300 is provided with a resilient element 390 which can engage behind a protrusion 67. In another embodiment a fastening piece can first be secured in the space bounded by inner jacket 62, and wherein all this is designed such that the functional module can be fastened to the fastening piece. Air, for instance coming from the ventilation pipe VB, can flow through the ventilation mouth 63. The ventilation pipe VB can be connected to the ventilation opening 65 of the mounting piece 600. The coupling of ventilation pipe VB to mounting piece 600 can be provided by sliding the ventilation pipe over edges 65a of ventilation opening 65, optionally in combination with the use of one or more of the following: a clamping ring, a sealing ring, an intermediate mounting piece. The skilled person will appreciate that the ventilation pipe can be coupled to the ventilation opening 65 in different ways.

Mounting piece 600 is further provided with a flange 601, wherein the features, advantages and possible alternatives thereof have already been discussed above.

Figure 17 shows that a mounting piece 600 is arranged in the free space of a dropped ceiling. The functional module 300 is connected via suspending means/fastening piece 330 to the inner wall 62b of inner jacket 62. Module 300 is provided with cabling 57, wherein the cabling runs through space 68. The cabling can be chosen from: electric wires, data cables, suspension cables and the like. The dropped ceiling VP is situated at a distance dl from the overlying floor VL.

A surface area of ventilation mouth 63 preferably the various less than 20% from a surface area of the at least one ventilation opening 65 in outer jacket 61. A peripheral edge of the ventilation opening 6 preferably extends in a first plane and a peripheral edge of ventilation mouth 63 preferably extends in a second plane, wherein the first plane and the second plane lie substantially perpendicularly of each other. This has the advantage that the distance dl between the dropped ceiling VP and the overlying floor VL can be kept small. The available height of the space R can hereby be increased.

Figures 18-20 show yet another embodiment of a lighting assembly 1000. The second valve piece 200 is here provided with a central part 200a and movable blades 200b. The movable blades 200b are coupled to first valve piece 100 by pressing the blades 200b with the central portion 200a and pressing plate 420 by tightening the screws 420a. The one or more movable blades 200b preferably each have a rotation axis Ra which extends in a direction lying roughly perpendicularly of the central axis Ca. The first valve piece 100 is designed to receive a rotation shaft part 281 of the movable blade 200b in a correspondingly designed opening 283. In this way the rotation axis of the movable plate 200b lies perpendicularly of the direction of the airflow.

The movable blades are configured with toothed wheels 250 on which the teeth 251 of the central part 200a can engage. In this way the position of the movable blades can be adjusted, whereby the flow rate of the airflow LS is controllable. The central part 200a is further provided with a knob 210, preferably configured with an indicator which can indicate the position of the movable blades. Rotating the knob 210 causes the teeth 251 of the central part 200a to rotate the toothed wheels 250 of the movable blades so that the position of the blades 200b is adjusted. Knob 210 is further configured with a throughfeed channel 211 in which the central shaft part 401 of fastening means 400 can be received in order to keep the first valve piece and second valve piece together and provide a coupling therebetween.

The module 300 can be connected via a connecting element 303 to the central shaft part 401. As shown in Figure 20, the connecting element 303 is designed for connection to the central shaft part 401. Figure 20A shows the movable blades 200b in more detail. The blade 200b has a blade wall 280 which in a closed position extends substantially in a plane perpendicularly of the airflow. Rotation of the blade around its rotation axis Ra perpendicularly of the airflow enables the space in the ventilation hole 122 through which the airflow can flow to be adjusted.

Figures 28, 29 A, 29B and 29C illustrate a further embodiment of an assembly including a mounting piece 60 with flow regulation means 700 and an auxiliary mounting piece 301a’ of a lighting module (not shown) or other functional module. Figures 30A and 30B illustrate a similar lighting assembly including a flow regulating means 700 and a lighting module 300. Mounting piece 60 has an outer jacket 61 and an inner jacket 62 received therein, and a connecting wall 64 between the inner jacket 62 and the outer jacket 61.

The mounting piece 60 is similar to the previously described mounting piece 60 with this difference that the inner jacket 62 is formed in two parts: an upper part which is fixedly arranged in the outer jacket 61 and a lower part 301a’ which is removably arranged and configured to receive a functional module, such as a lighting module 300. The mounting piece 60 further comprises a flow regulation means 700 configured to adjust a flow passage between the ventilation mouth 63 and the at least one ventilation opening 65. The flow regulation means 700 comprise a moveable (preferably rotatable) flow adjustment part 720 configured to define in a first and second position a first and second flow passage between the ventilation mouth 63 and the at least one ventilation opening 65, said first and second flow passage being different. The moveable flow adjustment part 720 is arranged between the outer jacket 61 and the inner jacket 62. The moveable flow adjustment element 720 may be a disclike element with at least one opening 721 which is arranged rotatably around a central axis of the inner jacket 62. The flow regulation means 700 comprise a further flow adjustment part 710 arranged between the outer jacket 61 and the inner jacket 62 and configured to cooperate with the moveable flow adjustment part to define the first and second flow passage. The further flow adjustment element 710 is a disc-like element with at least one opening 711 which is arranged between the outer jacket and the inner jacket. Optionally, there may be provided a strain relief component 618 for a cable for connecting the functional module 300 arranged in the mounting piece 60.

The inner jacket 62 comprises a removable portion 301a’ configured to receive a functional module, preferably a light module 300. The removable portion 301a’ may be fixed using connection means 317, 617. The moveable flow adjustment element 720 and the further flow adjustment element 710 are removably arranged between the removable portion 301a’ and the rest of the inner jacket 62. The disc-like element 710 may be fixed to the inner jacket 62, e.g. using connection elements 716, 615, while the disc-like element 720 is rotatable. In that manner the overlap between the ventilation holes 711, 721 can be changed.

In another non-illustrated example, a plurality of different discs with different ventilation holes may be provided, and a user may select a suitable disc to be mounted in an area between the outer jacket 61 and the inner jacket 62 depending on the required air flow. Thus, in such an embodiment only disc 710 would be arranged, without disc 720, but disc 710 selected from a set of different discs depending on the desired air flow.

Figures 31-33 illustrate a further exemplary embodiment similar to the embodiment of Figure 28 in which the same or similar components have been indicated with the same reference numerals, and reference is made to the description given above.

In the embodiment of figure 31, the complete inner jacket 62 is removably arranged in the outer jacket 61. To that end the inner jacket 62 is provided with lugs 68 which fit in openings 69 provided in connection wall 64 between inner jacket 62 and outer jacket 61, see also Figures 32 and 33. Further the inner jacket 62 is fixed with screws 168 to connection wall 64. Optionally, lugs 68 may be provided with inwardly protruding lips 168” with through-holes for the screws 168 and O-rings 168’ may be provided between the lips 168” and the connection wall 64 to avoid that the screws fall on the ground when they are unscrewed. In this way, inner jacket may be removed in a very easy manner. Typically, fist outer jacket 61 with flange 601 will be fitted in a wall (e.g. by plastering over the flange 601), whereupon optionally a porous noise reducing material may be arranged in the ventilation opening. Next the inner jacket 62 may be arranged.

In the embodiment of Figure 31, the inner jacket 62 may be formed in one piece with disc 710.

Rotatably disc 720 may be similar to the one described above for Figure 28. The inner jacket 62 comprises a removable portion 301a’ configured to receive a functional module, preferably a light module 300. The removable portion 301a’ may be fixed using connection means 317, 67. The moveable flow adjustment element 720 is removably arranged between the removable portion 301a’ and the rest of the inner jacket 62. In that manner the overlap between the ventilation holes 711, 721 can be changed.

Optionally a dummy cover 800 may be provided to close outer jacket 65 during plastering. Optionally, a further dummy cover (not shown) may be provided to close inner jacket 62 when no light module is present. Such dummy cover may be fitted in removable portion 301a’ using e.g. connection means 332 provided on the inside of the removable portion 301a’.

Optionally an abutment means 820 (e.g. a bolt and nut fixed in a hole 821 at the inside of the inner jacket 62) may be provided to function as a stop for a functional module arranged in the inner jacket 62.

The upper end of the inner jacket 62 may be open so that a cable for feeding the lighting module 300 can pass therethrough.

As shown in Figure 32, the outer jacket may have a rounded shape at a side opposite the ventilation opening 65. In this manner, it will be possible to more easily arrange the outer jacket 65 in a hole in a wall, wherein tube-like portion 65a may be inserted first and the assembly may then be rotated to arrange the flange 601 against the wall.

The skilled person will appreciate that many modifications and variants can be envisaged within the scope of the invention, which is defined solely by the following claims.