SEGMENTED WARMING LUMINAIRE WITH INTEGRATED AIR MULTIPLIER

Abstract

The invention provides a system (1) comprising a fan assembly (100) with a plurality of nozzle openings (115a, 115b, . . . ) for creating air flows (111a, 111b, . . . ), the fan assembly (100) configured to provide the air flows (111a, 111b, . . . ) in at least two non-parallel directions (112a, 112b, . . . ), wherein the at least two non-parallel directions (112a, 112b, . . . ) are configured within a virtual cone (30) having an apex angle () selected from the range of 10-170 and having a cone axis (31), a control system (200) configured to control the air flows (11a, 111b, . . . ), the system (1) further comprising a light source (10) configured to generate light source light (11), and the system (1) further comprising heating elements (113a, 113b, . . . ) for heating the respective flows (111a, 111b, . . . ).

Claims

1. A system comprising a fan assembly with a plurality of nozzle openings for creating air flows, the system further comprising a plurality of heating elements, with each air flow having an associated heating element wherein the system is configured to provide the air flows in at least two non-parallel directions with the air flows having respective air flow temperatures (Ta, Tb, . . . ), wherein the at least two non-parallel directions are configured within a virtual cone having an apex angle () selected from the range of 10-170 and having a cone axis, the system further comprising a control system configured to control the air flows, wherein controlling the air flows comprises controlling the respective air flow temperatures (Ta, Tb, . . . ) of the air flows and one or more of a flow velocity and a flow rate of the air flows, and the system further comprising a light source configured to generate light source light, wherein the system further comprises a user interface for independently selecting the air flow temperatures (Ta, Tb, . . . ) of the air flows.

2. The system according to claim 1, wherein the heating elements are comprised by the nozzle openings or are configured downstream of the nozzle openings.

3. The system according to claim 1, wherein downstream of one or more of the nozzle openings the fan assembly comprises one or more curved surfaces along which one or more of the air flows can flow, and wherein the one or more curved surfaces comprises one or more of the heating elements.

4. The system according to claim 1, wherein the control system is configured to provide in a controlling mode one or more pulsed air flows, wherein one or more of heating element temperatures of one or more heating elements vary in time with a frequency selected from the range of 1 s.sup.1-1 min.sup.1, and with a peak-to-peak temperature amplitude selected from the range of 0.5-5 C.

5. The system according to claim 1, wherein the control system is further configured to control the light source.

6. The system according to claim 1, wherein the light source light has an optical axis (O), wherein the system is configured to provide the light source light with the optical axis (O) of the light source light and the cone axis having a mutual angle () selected from the ranges of 0-80 and 100-180, wherein the system is configured to provide the air flows having mutual angles with the cone axis selected from the ranges of 10-80, wherein the system comprises at least three nozzle openings, wherein the fan assembly is configured to provide at least three air flows in at least three mutually non-parallel directions, and wherein the control system is configured to control one or more of the flow velocity and flow rate of each of the at least three air flows escaping from the at least three nozzle openings.

7. The system according to claim 1, wherein the plurality of nozzle openings are configured in an annular configuration, wherein the light source comprises an annular light exit window, and wherein (a) the plurality of nozzle openings perimetrically surround a light exit window and/or the light source.

8. The system according to claim 1, wherein the fan assembly is configured to create air flows with a product of the air flow (m.sup.3/s) and the air velocity (m/s) of at least 0.05 m.sup.4/s.sup.2 through the nozzle openings, wherein the nozzle openings have one or more dimensions selected from a length, a width and a diameter in the range of 0.2-10 mm, and wherein the fan assembly comprises one or more impellers.

9. The system according to claim 1, wherein the fan assembly comprises a duct for a fluid connection between an air inlet and one or more nozzle openings, wherein the duct comprises an air filter, wherein the air filter has an air filter cross-section (A1), wherein the duct has a duct cross-section (A2) at a position where the air filter is configured, and wherein the filter cross-section (A1) and the duct cross-section (A2) have a ratio (A1/A2) selected from the range of 0.3-0.95.

10. The system according to claim 1, wherein the system is configured for suspension, wherein the system comprises a top part and a down part, wherein the light source is configured to provide the light source light propagating in a direction away from one or more of the top part and the down part, and wherein the fan assembly is configured to provide the air flows propagating in a direction away from the down part.

11. A method for providing one or more of an air flow and light in a space, the method comprising providing one or more of (a) one or more of the air flows having respective air flow temperatures (Ta, Tb, . . . ) and (b) the light source light in the space with the system according to claim 1 and further comprising independently selecting the air flow temperatures (Ta, Tb, . . . ) of the air flows.

12. The method according to claim 11, wherein the system further comprises the air filter the method further comprising filtering air in the space.

13. The method according to claim 11, wherein the system is configured pendant.

14. A computer program product when running on a computer which is functionally coupled to or comprised by the system according to claim 1, is capable of bringing about the method.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0092] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:

[0093] FIGS. 1a-1b schematically depict some embodiments of the system;

[0094] FIG. 2 schematically depict some uplight and/or downlight aspects;

[0095] FIGS. 3a-3c schematically depict some possible embodiments;

[0096] FIGS. 4a-4e schematically depict some aspects and embodiments of the system and its application;

[0097] FIGS. 5a-5d schematically depict some embodiments and aspects; and

[0098] FIG. 6 schematically depicts an application.

[0099] The schematic drawings are not necessarily on scale.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0100] FIG. 1a schematically depicts an embodiment of a system 1 as described herein, which comprises a fan assembly 100 with a plurality of nozzle openings 115, which individual nozzle openings are indicated with references 115a,115b, . . . . The fan assembly is configured to create (mutually divergent) air flows 111a, 111b, . . . (from one or more of the nozzle openings).

[0101] Indications like 115a,115b, . . . indicate that at least two of such element may be available. Further, indications like 115a,115b, . . . indicate a plurality of the element 115, with the individual elements being indicated with 115a,115b, . . . .

[0102] During use, one or more air flows 111 may be generated. However, the system is configured to provide the air flows 111a, 111b, . . . in at least two non-parallel directions 112a, 112b, . . . . Though the system is configured to provide the air flows 111a, 111b, . . . in at least two non-parallel directions 112a, 112b, . . . , this does not imply that during use always all air flows are provided. For instance, one may switch between air flows, or reduce the number of air flows in a direction where no air flow is desired, etc. To that end the system may further include a control system (see also below).

[0103] The fan assembly 100 may include a plurality of nozzles 110, with the individual nozzles being indicted with references 110a, 110b, etc. Note that the air flow generating device (see also below) as well as the nozzles may substantially be enclosed by a housing 7, with only the nozzle openings 115 (optionally) visible. Here, the nozzle openings 115 are configured in a virtual closed arc, which may be round or oval. By way of example, six nozzle openings 115 are depicted. In this schematically depicted embodiment the plurality of nozzle openings 115a, 115b, . . . are configured in an annular configuration. The system may also comprise an inlet 116 (e.g. at the top of the system).

[0104] The nozzle openings 115 can substantially have any shape. Here, by way of example six nozzle openings 115 are depicted, which have an oval shape. In specific embodiments, the nozzle openings have one or more (smallest) dimensions selected from a length (L), a width W and a diameter in the range of 0.2-10 mm, especially 0.5-5 mm, such as 1-5 mm. Width W and length L are indicated in the drawing. The nozzle opening define a cross-sectional area. The total cross-sectional are for all nozzle openings 115 may be at least 20 cm.sup.2, such as even at least 50 cm.sup.2, to provide the desired flows.

[0105] In embodiments, the system 1 may further comprise a light source 10, such as a solid state light source, like a LED, configured to generate light source light 11. The light source light has an optical axis O. Here, the system 1 is configured as downlighter, though alternatively or additionally, the system 1 may also be configured as uplighter.

[0106] The at least two non-parallel directions 112a, 112b, . . . are configured within a virtual cone 30 having an apex angle selected from the range of 10-170, such as 20-120, like 30-150. A cone having a diameter twice as large as the length of the cone axis has a cone angle of 90. The virtual cone further has a cone axis 31. The apex angle can also be defined as a cone angle. The apex angle of the virtual cone 30 in FIG. 1a is about 75.

[0107] Note that here the optical axis O and the cone axis 31 are parallel in this schematically depicted embodiment. Even more, in this embodiment the optical axis O and the cone axis 31 (substantially) coincide.

[0108] The system 1, as schematically depicted here is configured for suspension (pendant). The system 1 may comprise a top part 3 and a down part 4. The light source 10 is configured to provide the light source light 11 propagating in a direction away from one or more of the top part 3 and the down part 4, here in a direction away from the down part 4. However, especially the fan assembly 130 is configured to provide the air flows 111a, 111b, . . . propagating in a direction away from the down part 4.

[0109] The system 1 may further include a control system 200 configured to control the air flows 111a, 111b, . . . . The control system may be integrated in the housing 7 (as schematically depicted in FIG. 1b); or may be external thereof (as schematically depicted in FIG. 1a). Further, the control system 200 may include a user interface 220, which may be integrated in the system or which may be remote, such as comprised by a remote control (see also FIG. 1b). The control system 200 may further be configured to control the light source 10. The system may be equipped with sensors to sense the air quality for automatically performing air purification.

[0110] The system 1 may have a main axis MA, especially when the device may have a cylindrical like shape or a conical like shape or a beam like shape. The main axis MA may especially coincide with at least one virtual cone 30.

[0111] The system, or more especially the device depicted that comprises the fan assembly 100 and the light source 10, as schematically depicted in FIG. 1a is shaped like a cone and centered around a revolution axis, where a central opening or light exit window (see below) is centered around the axis. However, this shape of the system 1 or of the housing 7 is a non-limiting example of the many possible shapes. For instance, referring to FIG. 1b, this may be a cross-section of a conically shaped system 1, but this may also be the cross-section of a regular pyramid(-like) shape, such as a triangular shaped pyramid or a square (rhombic) pyramid or a rectangular pyramid, or a pentagonal pyramid, etc. etc.

[0112] One may also state that the at least two non-parallel directions 112 of the air flows 111 are defined by a first virtual cone 30 and a second virtual cone 30, one having a cone apex 1, which has the herein indicated lower value of at least 10, and one having a cone apex 2, which has the herein indicated upper value of 170. The air flows 111 have directions 112 within these two cones 30,30. The virtual cones 30 and 30 share the cone axis 31. This is schematically indicated in FIG. 1b. The apexes of the two virtual cones point in the same direction (here upwards). The apex angles in FIG. 1b are about 15 (1) and 150 (2).

[0113] As the first virtual cone 30 has (thus) an apex angle of (at least) 10, the angle of the air flows 111 is thus at least 5 with the virtual cone axis 30, such as at least 10. Therefore, especially, such as also depicted schematically in FIG. 1b, the system (1) is configured to provide the air flows 111a, 111b, . . . having (mutual) angles 1, 2, . . . with the cone axis 31 selected from the ranges of 5-85, even more especially 10-80. More especially, the directions 112a, 112b, . . . and the cone axis 31 have mutual angles 1, 2, . . . selected from the ranges of 10-80, such as at least 20, like in the range of 20-70.

[0114] Here, the system 1 has again a main axis MA. The optical axis O is configured parallel to the main axis MA. The fan assembly 100 is configured to provide the air flows 111a, 111b, . . . in at least two non-parallel directions 112a, 112b, . . . having (mutual) angles 1, 2, . . . with the main axis MA selected from the ranges of 5-85, even more especially 10-80, more especially selected from the ranges of 20-70. As in this embodiment the main axis MA substantially coincide with the virtual cone axis 31, the values for and may be (substantially) equal.

[0115] Further, the system 1 is configured to provide the light source light 11 with the optical axis O and the cone axis 31 having a mutual angle selected from the ranges of 0-80 and 100-180. In FIG. 1b, the angle is 0; as the system is a downlighter and down fan.

[0116] Reference 1100 indicates a luminaire with an integrated fan assembly. This may be part of the system 1, such as when the system further comprises a user interface, or this may in embodiments be the system 1 (when e.g. a user interface is integrated in the luminaire 1100).

[0117] In FIG. 1b, a remote control 225 is indicated, which may include a user interface 220 for providing instructions to the control system 200. Here, by way of example the control system 200 is integrated in the housing 7.

[0118] FIG. 2 schematically depicts the orientation of the optical axis relative to the cone axis 31. The light source light 11 with the optical axis O and the cone axis 31 have a mutual angle selected from the ranges of 0-80 (downlight) and 100-180 (uplight). Only by way of example (two) beams are depicted that have non-zero angles with the cone axis 31.

[0119] FIG. 3a schematically depicts an embodiment of the system 1 comprising at least three nozzle openings 115a, 115b, . . . , wherein the fan assembly 100 is configured to provide at least three air flows 111a, 111b, . . . in at least three mutually non-parallel directions 112a, 112b, . . . , and wherein the control system 100 is configured to control one or more of the flow velocity and flow rate of each of the at least three air flows 111a, 111b, . . . escaping from the at least three nozzle openings 115a, 115b, . . . . Note that each of the flow directions 112a, 112b, . . . have a mutual angle with the cone axis 31 of at least 10 such as at least 20, though especially not larger than 80. Note that the device or housing 7 has a square or rectangular cross-section.

[0120] As can be derived from e.g. FIGS. 1a, 1b and 3a, the system 1 may be configured to provide the air flows 111a, 111b, . . . and the light source light 11 with the optical axis O of the light source light 11 and one or more directions 112a, . . . having mutual angles selected from the ranges of 10-80 and 100-170. Further, also two or more flow directions may have mutual angles selected from the ranges of 10-80 and 100-170. Especially, at least two or more flow directions have mutual angles selected from the ranges of 10-80. Note that when a multitude of flow directions are available (in the same virtual cone), a plurality of subsets of two flow directions may comply with this condition, though adjacent flows may have flow directions that may have smaller mutual angles.

[0121] FIG. 3b schematically depicts an embodiment of the system 1 wherein the light source 10 comprises an annular light exit window 13. For instance, a plurality of solid state light source may be configured upstream from the light exit window 13 (solid state light sources not visible in the drawing). Here, the system 1 also comprises a plurality of annular nozzles openings 115. Here, by way of example three annular nozzles openings 115 are depicted over each other. Note that one or more of these nozzle openings may include a plurality of different nozzle openings 115a, 115b, . . . . This is schematically indicated in the upper annular nozzle opening, which includes in fact nozzle opening 115a (right), nozzle opening 115b (left), and a third nozzle opening 115c (at the back) of the housing. The dashed lines indicates the sections wherein the respective nozzle openings 115a, 115b, etc. are configured. Only by way of example schematically three sections are depicted. Also two, or more than three section may be used. The two other rings may provide further nozzle openings that may optionally be independently controlled form the nozzle openings 115a, 115b, 115c of the upper annular nozzle opening, but which may optionally also be subdivided in the same three sections. Note that here both the nozzle openings 115 are configured in an annular configuration and the light exit window is configured in an annular configuration.

[0122] FIG. 3c schematically depicts a similar type of embodiment as schematically depicted in FIG. 3b. However, here the light exit window 13 is not hollow but substantially closed. Hence, where in FIG. 3b the light exit window 13 is a closed arc, here the light exit window 13 is a closed circle, square, triangle, rectangle, etc., whatever shape is selected. References 116 indicate openings (air inlets) for sucking air into the fan assembly. As indicated above, the term fan assembly may also refer to a plurality of fan assemblies (that may independently be controlled).

[0123] FIG. 3c also schematically depicts an embodiment of the system 1 further comprising a plurality of heating elements 113a, 113b, . . . . The heating elements are indicated with reference 113. To distinguish different heating elements, these are indicated with references 113a, 113b, etc., with for each flow 111 at least a heating element 113. The different heating elements 113a, 113b, etc., may thus be used for different flows 111a, 111b, etc. For instance, the heating elements may be flow-through (heating) elements. Instead of or additional to the heating elements, cooling elements may be applied. Thus in specific embodiments, references 113 may also refer to cooling elements or, more in general, to temperature control elements.

[0124] Cooling elements can be used to actively cool the air flow(s).

[0125] FIG. 4a schematically depicts part of a system 1, which may for instance be a part of the system 1 also schematically depicted in FIG. 3b. Reference 125 schematically indicates an impeller as example of an air flow generating device 120.

[0126] FIGS. 4b-4c schematically depict embodiments where the air flows 111 are generated at the inside of the system 1. In FIGS. 3b-3d the air flows were generated at the edges of the system 1. The fan assembly 100 comprises an air flow generating device 120, such as an impeller 125. The fan assembly 130 may comprise a duct 140 for a fluid connection between an air inlet 116 and one or more nozzle openings 115a, 115b, . . . . Here, the duct 140 comprises an air filter 150. Hence, in this way, with the luminaire also air may be purified. FIG. 4b also schematically depicts an embodiment of the system 1 further comprising a plurality of heating elements 113a, 113b, . . . . For instance, the heating elements 113 may be flow-through heating elements (see also FIG. 5d). Here, however, the heating elements 113 are depicted as element associated with a surface of the outlet 115a or a downstream (curved) surface (see further also FIG. 5c).

[0127] FIG. 4c schematically depicts an embodiment wherein the air filter 150 has an air filter cross-section A1, wherein the duct 140 has a duct cross-section A2 at a position 141 where the air filter 150 is configured, and wherein the filter cross-section A1 and the duct cross-section A2 have a ratio A1/A2 selected from the range of 0.3-0.95. This is schematically depicted in more detail in FIG. 4d, wherein the square indicates the cross section A2 of the duct 140 at position 141, wherein part of this cross section A2 is blocked by the filter 150 having a cross section A1, which is smaller than the cross section A2 of the duct 140. The ratio of A1/2 can also be larger than 0.95, such as even 1. In the latter variant, the filter is configured in the entire cross-section of the duct, and there is no bypass. When A1/A2 is larger than 0, but smaller than 1, there is some bypass or remaining part, indicated with reference 143, that can be used to increase the flow, but nevertheless air can be filtered and air in a space can be cleaned (removing of particles). The filter may optionally be configured as valve, thereby allowing a controllable ratio A1/2. Hence, the filter cross-section is especially the cross-section of the duct occupied by the filter (when seen along a duct axis). Alternatively or additionally, in embodiments, the ratio A1/A2 can be smaller than 1, and at least part of the remaining part, indicated with reference 143 of the duct can be closed with an controllable valve 146. This valve is optional. In this way, air filtering and air flow may even be better controlled. Hence, in embodiments the duct 140 can be intercepted by one or more of a valve and an air filter 150, wherein optionally stages are available wherein with a ratio of smaller than 1, nevertheless the bypass can be blocked with a valve. Hence, optionally the bypass is controllable. In FIG. 4b the cross-section of the air filter 150 and the duct 140 are at the position of the filter apparently substantially identical (no bypass). In FIG. 4d, reference DA indicates a duct axis, which is here perpendicular to the duct cross section A2.

[0128] Referring to FIGS. 3b-3d and 4a-4c, (a) the plurality of nozzle openings 115a, 115b, . . . perimetrically surround the annular light exit window 13 and/or the light source 10 or (b) wherein the plurality of nozzle openings 115a, 115b, . . . are perimetrically surrounded by the annular light exit window 13 and/or the light source 10.

[0129] Referring to FIGS. 3b, 4b, 4c, the embodiments schematically depicted therein and similar embodiments have a hollow inner part that can be illuminated, e.g. to create a specific ambiance

[0130] The system 1 can be used to illuminate a space, to provide one or more air flows in a space (such as for cooling), or to filter the air in the space. Especially, the system may thus be used for providing one or more of an air flow and light in a space 1000, the method comprising providing one or more of (a) one or more of the air flows 111a, 111b, . . . , and (b) the light source light 11 in the space 1000. This is schematically depicted in FIG. 4e. Here, by way of example the system 1 is configured pendant. Further, as schematically depicted in FIG. 4e, by way of example the system 1 comprises two subsets of mutually divergent air flows. Thereby, as here schematically depicted, air flows 111a and 111b, with mutually divergent directions 112a and 112b, respectively (which define a first virtual cone; not depicted), and air flows 111a and 111b, with mutually divergent directions 112a and 112b, respectively (which define a second virtual cone; not depicted) are provided. Further, by way of example also further air flows outside the virtual cones are provided in a direction anti-parallel to the cone axes (not depicted) of the virtual cones. Here, the further air flow which are directed up are also provided. These further air flows are indicated with reference 211, with a first further air flow 211a, having a direction 212a, and a second further air flow 211b, with a direction 212b. The system, here especially housing 7, includes a sensor 250. Further, two virtual hemispheres are defined, with the device or apparatus (or housing) comprising the fan assembly 100 and the light source 10 in the middle. The mutually divergent air flows 111 and the light source light 11 are provided in the same hemisphere (here the lower). By way of example, reference 1001 indicates a table. Of course, more objects or other objects may be available in the space.

[0131] The systems 1 shown in FIGS. 1a-1b, 3a-3c, 4a-4c and 4e all schematically depict integrated units, though in FIGS. 1a-1b the control system 200 and/or remote control are schematically depicted as not being part of the integrated unit (device or apparatus) comprising the fan assembly and light source. Note however that also in e.g. FIG. 4e the sensor 250 may be configured external from the device or apparatus comprising the fan assembly and light source.

[0132] The apparatus may in embodiments comprise a fan assembly and a light source. The apparatus is configured for creating a plurality of airflows to cool or heat the environment and to provide light to illuminate the space. The fan assembly has a plurality of nozzles for creating airflows. Each nozzle may include at least one nozzle opening. The direction of the airflow is configured within a virtual cylinder.

[0133] The apparatus may have a light exit window from which the light source light emanates in a direction away from the light source, e.g. downwards in a down lighter configuration.

[0134] The apparatus may preferably be positioned in a horizontal plane, e.g. pendant or ceiling version, and can have at least two set of nozzles with different directions relative to the central axis, enabling selectively control of the jets and airflows. If the apparatus is configured as a ceiling-version a distance between the apparatus and the ceiling has to be reserved to be able to suck in the air, or the apparatus itself has to implement an inlet volume itself.

[0135] The apparatus can also generate a warm airflow. To create the perception of a warm airflow, a temperature rise of e.g. about 5 C. should be realized compared to the body temperature. This temperature rise takes into account that the perception of the higher temperature is lowered because of the airflow (this airflow itself constituting in itself the cooling functionality). To increase the perception of the temperature rise the fan speed can be minimized. At a low speed the temperature drop caused by the flow is minimized and the heat transfer is increased because of the increase of the contact time of the air with the heater element. Further, by using a pulsed temperature profile the temperature difference can be minimized, e.g. up to about 2 C., or even up to 1.5 C., or even up to 1 C. Guided airflows can be spread across the apparatus. When the flows can independently be controlled, the characteristics of the various flows can be varied, e.g. high speed, low speed, warm air and cold air. The temperature of the airflow can be controlled by the power of the heater element and the speed of the fan.

[0136] For instance, ambient air may be heated with a block pulse with as base temperature the ambient temperature, and with a maximum temperature of 1 C. above, i.e. a peak-to-peak amplitude of 1 C. When a pulsed temperature profile is provided, such as e.g. sequentially 0.5 min. ambient temperature and 0.5 min. 1 C. above ambient temperature, a person may experience a warm air flow. Peak-to-peak amplitude is the change between peak (highest amplitude value) and trough (lowest amplitude value, which can be negative), which are in this example ambient +1 C. and ambient, respectively,

[0137] FIG. 5a shows an embodiment with the heater at the fan outlet. Herein, an example of a heating element 113 is shown, which is configure upstream of the nozzle opening 115.

[0138] The heater element can also be positioned in the nozzle outlet, see FIG. 5b. In the nozzle outlet also a lamella like structure for the heater can be applied. The heater can be positioned along the whole circumference of the nozzle opening. The position of the heater element can also be spread across the surface of the inner ring of the multifunctional luminaire, see FIG. 5c. This position makes use of the so called coanda effect. Fluid has the property to stick to a surface. The contact of the air with the heater element will increase the temperature of the flowing air. Hence, the heating elements may be comprised by the nozzle opening 115 and/or may be configured downstream of the nozzle openings 115. FIG. 5c schematically shows an embodiment wherein downstream of a nozzle opening 115 the fan assembly 100 comprises a curved surfaces 117 along which the (respective) air flow 111 can flow, and wherein the curved surface 117 may comprise the heating elements 113. For instance, a heating film may be applied. Such films are commercially available.

[0139] Alternatively or additionally, a flow through heating element 113 may be applied, comprising a plurality of electrically conductive wires or strips. FIG. 5d schematically depicts and embodiment electrically conductive wires or strips, indicates as electrically conductors 113a. Here, a kind of 2D array of wires is schematically depicted. Through the heating element 113, an air flow 111 may be expelled, which may be heated with the heating element.

[0140] FIG. 6 schematically depicts an application of the segmented luminaire. A-D may indicated different positions (or different persons), which may individually control different flows 111, indicated as flows 111a, 111b, and 111d, as to position C, no flow (111c) is provided. The ambient temperature may e.g. be 20 C. Flow 111a may e.g. be 20 C., flow B may e.g. be 22 C., and flow D may e.g. be 24 C.

[0141] Providing segmentation of the affected areas and persons, with a warm airflow, is one of the benefits of this invention compared to a conventional fan. Airflows with air at different temperatures can be generated. This will optimize the feeling of comfort and well-being for individual people, with their preferred wishes.

[0142] The multifunctional luminaire with combined light function, air multiplier function (cooler or heater) and air purification function can be applied for both consumer- and professional-applications.

Examples of consumer applications: dining room, bedroom, kitchen, bathroom and study. Examples of professional applications: lobby in hotel, waiting room, restaurants, canteens, etc. Additionally such set-up might be implemented in e.g. animal and horticulture applications.

[0143] In below table, parameters are indicated with which the apparent temperature can be controlled.

TABLE-US-00001 optional individual optional general general (flow) individual control control control (flow) control parameters parameters parameters parameters flow rate of flow rate of the the flows individual flows flow velocity flow velocity of of the flows individual the flows pulsed flow pulsed flow profile profile of of the flows the individual flows temperature of the respective heating elements pulsed temperature profile of the respective heating elements

[0144] In alternative time embodiments, a cooling element or a temperature control element may be applied, wherein the latter may be used for cooling or heating.

[0145] Note that in embodiments for cooling the flow control parameters such as flow rate and/or flow velocity can be used. For heating, the temperature of the control element may be controlled as well as also the flow control parameters such as flow rate and/or flow velocity, as heating the flow with a lower flow rate and/or lower flow velocity may be experienced warmer than with a higher flow velocity and/or higher flow rate.

[0146] As indicated above, in yet other embodiments, the system comprises temperature control elements that can only cool, or comprises temperature elements that can cool and heat. Hence, the herein described embodiments and the attached claims may also related to systems that are able to actively cool (not only cooling by providing a flow).

[0147] Therefore, in an aspect the invention also provides a system comprising a fan assembly with a plurality of nozzle openings for creating air flows, the system further comprising a plurality of temperature control elements, wherein one or more temperature control elements can heat or cool, especially heat and cool, wherein the system is configured to provide the air flows in at least two non-parallel directions, with the air flows having respective air flow temperatures (which can thus individually be controlled), the system further comprising a control system configured to control the air flows, wherein controlling the air flows comprises controlling the respective air flow temperatures of the air flows and one or more of a flow velocity and a flow rate of the air flows, and the system further comprising a light source configured to generate light source light. In specific embodiments the at least two non-parallel directions are configured within a virtual cone having an apex angle selected from the range of 10-170 and having a cone axis (see also above).

[0148] As indicated above, in specific embodiments the air flow velocity and/or air flow rate may especially individually be controlled for the different air flows.

[0149] As indicated above, in specific embodiments the temperature of the air flows can individually be controlled (which does not exclude that there are controlling modes wherein all temperature are essentially the same, but which may at least include at least a controlling mode wherein two or more air flows have different air flow temperatures).

[0150] The term substantially herein, such as in substantially all light or in substantially consists, will be understood by the person skilled in the art. The term substantially may also include embodiments with entirely, completely, all, etc. Hence, in embodiments the adjective substantially may also be removed. Where applicable, the term substantially may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term comprise includes also embodiments wherein the term comprises means consists of. The term and/or especially relates to one or more of the items mentioned before and after and/or. For instance, a phrase item 1 and/or item 2 and similar phrases may relate to one or more of item 1 and item 2. The term comprising may in an embodiment refer to consisting of but may in another embodiment also refer to containing at least the defined species and optionally one or more other species.

[0151] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0152] The system, apparatus and devices herein are amongst others described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation or devices in operation.

[0153] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb to comprise and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article a or an preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the device claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0154] The invention further applies to a device comprising one or more of the characterizing features described in the description and/or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterizing features described in the description and/or shown in the attached drawings.

[0155] The various aspects discussed in this patent can be combined in order to provide additional advantages. Further, the person skilled in the art will understand that embodiments can be combined, and that also more than two embodiments can be combined. Furthermore, some of the features can form the basis for one or more divisional applications.