AIR OUTLET

Description

[0001] The invention relates to an air vent having a housing with an air duct in which a decorative element, at least one first slat and at least one second slat are arranged.

[0002] Air vents are used to disperse air supplied by an air conditioning system or other ventilation device. They can also be used to deflect the dispersed air. In vehicles, air vents are used to bring fresh air, temperate air, and / or conditioned air into the passenger compartment. Vehicles can be, for example, motor vehicles such as cars, trucks or buses, trains, airplanes, or ships.

[0003] In air vents, in addition to controlling the deflection of the air, the amount of air delivered can often also be regulated. A throttle device can be provided for this purpose. The throttle device can regulate the amount of supplied air via a control device, whereby the control device can be arranged or coupled with an operating device for deflecting the air flow or separately from such an operating device. Such an operating device can be provided, for example, in the region of an outlet opening.

[0004] Air vents in motor vehicles can be located in various positions. For example, air vents in motor vehicles are located near a vehicle's dashboard, near the A-, B-, or C-pillar, on the roof, or in other locations. State of the art

[0005] Air vents with a very low discharge height compared to their discharge width (and vice versa) are known from the prior art. These air vents are also referred to as gap vents. Such air vents have, for example, egg-shaped air guide elements that are rigidly arranged, i.e., immovably, in an air duct section, with air ducts formed between the air guide element and the opposing wall sections. Air can be supplied to these air ducts alternately or jointly, with the air being supplied to one of the areas via a vane that is pivotally mounted on the rear of the air guide element.

[0006] Such an air vent is described, for example, in DE 10 2013 210 055 B3. This air vent also has louvers that are positioned upstream of the vane in the airflow direction and spaced apart from it. These vanes are also located in a section of the air duct that is separate from the section of the air duct in which the air is deflected via the vane and the air guide element.

[0007] The air vent has several disadvantages. First, the lateral air deflection via the slats, which are spaced apart in the direction of airflow and positioned in front of the vent, is insufficient. The air can only be deflected laterally to a very limited extent by the slats.

[0008] Furthermore, the air vent in DE 10 2013 210 055 B3 exhibits significant pressure differences when the blade is in its fully pivoted position compared to a neutral position. This can lead to noise generation when the blade is in its fully pivoted position.

[0009] The varying pressure conditions in the various positions of the blade also worsen lateral air deflection. The more the airflow is throttled into one of the two partial air ducts, the less effective the lateral air deflection is via the louvres positioned in front of the blades in the direction of airflow.

[0010] The air guide element and the vane of the air vent of DE 10 2013 210 055 B3 are designed, in all disclosed embodiments and in the claimed embodiment, as an air guide element consisting of two components, namely the rigid air guide element and the vane movably arranged on the rear side. However, as explained above, the design of such an elongated air guide element with a movable rear side has a number of disadvantages.

[0011] DE 102 02 926 A1 discloses an air nozzle with a pivotably mounted guide element. The guide element serves to deflect the air and is mounted in a section with curved side walls. To control the air deflection, an adjusting element is coupled to the guide element, so that the guide element pivots in the opposite direction when the adjusting element is pivoted. In interaction with the curved side walls, a downward airflow can be generated, for example, by pivoting the adjusting element downward.

[0012] US 2008 0 146 139 A1, WO 2016 / 075 111 A1, DE 20 2012 100 243 U1, and US 2011 0 319 005 A1 each disclose an air vent having at least one first louvre in the region of the air outlet opening and second louvres arranged transversely thereto behind it. An actuating element enables the adjustment of the first and second louvres to influence the direction of the airflow exiting the vent. Furthermore, a throttle device can be provided in the region of the air inlet of the vent, which allows the airflow introduced into the vent to be regulated. Task

[0013] In contrast, the object of the invention is to provide an air vent which has a very simple structure compared to the prior art, eliminates the problems of the prior art and represents an alternative solution to the air vents known from the prior art. Solution

[0014] The above-mentioned object is achieved according to the invention by an air vent according to independent claim 1. The air vent comprising a housing with an air duct in which a decorative element, at least one first slat and at least one second slat are arranged, wherein the decorative element is arranged in a section of the air duct facing an air outlet opening, the at least one first slat is arranged upstream of the decorative element in the air duct in the air flow direction, the at least one second slat is arranged upstream of the at least one first slat in the air flow direction in a section of the air duct facing an air inlet opening, the at least one first slat and the at least one second slat are pivotally mounted on and / or in the housing, by means of the at least one second slat, the amount of air supplied into a first region and into a second region of the at least one first slat can be regulated, the at least one first slat is pivotally mounted substantially orthogonally to the pivot axis of the at least one second slat and substantially orthogonally to a longitudinal axis of the decorative element,and the decorative element and the at least one first slat are arranged in a first section of the air duct and the at least one second slat is arranged in a second section of the air duct, wherein the first section has curved wall sections opposite the decorative element and the second section has a smaller flow cross-section than the first section.

[0015] The arrangement enables improved lateral air deflection compared to the prior art, as the air deflection occurs closer to the area of ​​the air outlet opening. The second louvre, which is intended to guide air flowing in via the air inlet opening into the first and second areas of the at least one first louvre, is positioned upstream of the at least one first louvre in the air flow direction and is located in the area of ​​an air inlet opening for the air duct. The air is deflected into a front section facing the air outlet opening via the second louvre in a rear section of the air duct via the formation of the wall sections in the housing.

[0016] In further designs with a movable decorative element, which then serves as an air guide element, air deflection can occur via the air guide element in conjunction with the wall sections. Especially in air vents with a very low air outlet height compared to an air outlet width (so-called joint vents), air deflection via the second louvre is sufficient and can be provided to the same extent as, for example, in the prior art if the necessary device (second louvre) for deflecting the incoming air flow is arranged at a significant distance from the decorative element or an air guide element. Incoming air is first guided via the second louvre into a first and / or second region of the at least one first louvre, depending on the position of the second louvre. This results in an initial air deflection, for example upwards and downwards.The air is then deflected laterally depending on the supply to the two areas of the at least one first louvre. Since the lateral deflection occurs in a front section of the air duct facing the air outlet opening, it is maintained and is not weakened by additional air deflection via the curvature of the opposite side walls.

[0017] The decorative element extends in the longitudinal direction of the air outlet opening and can only serve as an air guide element if the decorative element is relocated (e.g. as an additional louvre). There is also no air deflection via the decorative element if it is designed as a roller or cylinder, since the distance to the housing walls is not changed by rotating the decorative element. In the technical teaching described here, the air deflection is controlled by the at least one second louvre, which specifies the supply to the various areas of the at least one first louvre. The air then flows along the opposite wall sections and is deflected downwards, for example, if the air flow is lower in a lower area of ​​the air duct. The air flow is greater in the upper area, so that the larger air flow determines the direction of the output air due to the superposition of the output partial air flows.Tests have shown that the air deflection is based on the design of the opposing wall sections, with the opposing wall sections running parallel to the decorative element and parallel to the pivot axis of the second louvre. The decorative element therefore has no effect on the air deflection and therefore cannot technically be considered an air guiding element, since no air deflection or "air guidance" occurs through it. If, on the other hand, the decorative element is designed as an additional louvre and pivotably mounted in opposite housing walls, it can be referred to as an air guiding element. However, this is not the case for designs with a rigidly arranged decorative element.

[0018] The decorative element can further serve to conceal a coupling area of ​​a plurality of first slats and can be provided as a bearing for an operating element which is pivotably and / or displaceably mounted.

[0019] The decorative element can have various cross-sectional shapes and extends across the larger width of the air outlet opening. The decorative element is essentially arranged so that it extends centrally over the air outlet opening.

[0020] The air vent described herein therefore represents a different concept than that described, for example, in DE 10 2013 210 055 B3. The prior art design discloses a substantially elongated air guide element, consisting of a rigidly arranged air guide element and a wing movably mounted thereon. Lateral air deflection is fundamentally only possible to a very limited extent with this system, since, on the one hand, the already laterally deflected air flows over the air guide element and, on the other hand, the laterally deflected air is additionally subordinate to the air deflection via the wing, with the air deflection via the wing occurring after the lateral air deflection.

[0021] Instead of a single second louvre, in further embodiments, several second louvres can be pivotably mounted on or in the housing, causing air deflection orthogonally to the air deflection via the at least one first louvre. Thus, the second louvre can also be formed from at least two interconnected partial louvres or sections. A connection can be made, for example, via a film hinge or a pivot bearing. In still further embodiments, the at least one second louvre can also be designed as a so-called flexible louvre. Flexible louvres are deformable and can be made of a flexible material for this purpose. A device can then deform the flexible louvre to deflect the air.

[0022] Furthermore, the air vent can also have a throttle device that serves to regulate the amount of air supplied. The throttle device can have two shell-like elements that are pivotally mounted relative to each other, so that the air duct is closed by moving them toward each other. This has the advantage that the throttle device itself does not cause air deflection when throttled.

[0023] The housing of the air vent can have rounded air outlet edges in the area of ​​the air outlet opening, which are designed in such a way that, by utilizing the Coanda effect, an air flow expansion can be achieved and air deflection is supported. The air deflection orthogonal to the at least one first louvre is thereby further improved.

[0024] Furthermore, the decorative element can be curved at its end facing the air inlet and / or the air outlet in such a way that an air flow expansion can be achieved by utilizing the Coanda effect. In designs with an air guide element, this can also further assist air deflection.

[0025] In further embodiments, the decorative element can be mounted so as to be displaceable in the direction of air flow and can then also serve as an air guiding element. This creates the possibility of providing a diffuse or spot-heavy air flow. In a first position, a diffuse air flow can be provided, wherein the air guiding element is located at a first distance from the air outlet opening or the wall sections of the air duct in this area. In this position of the air guiding element, a diffuse air flow can be emitted, wherein, for example, rounded air outlet edges support the widening of the air flow to provide the diffuse air flow. If the air guiding element is moved to a second distance from the air outlet opening or the wall sections of the air duct.If the wall sections of the air duct in this area are located, a spot-heavy airflow can be provided, with the outflowing air being concentrated differently than at the initial distance between the air guide element and the air outlet opening. The discharged air impinges on different areas of the air guide element. The discharged airflow is then accordingly different if the air guide element has differently shaped areas.

[0026] The movable mounting of the air guide element provides additional control over the airflow. The distance between the air guide element and the housing allows the flow cross-section in the area of ​​the air outlet opening to be adjusted accordingly, providing a diffuse airflow or a spot-focused airflow.

[0027] The decorative element can either be rigidly arranged in the housing of the air vent or be mounted in a movable, for example, displaceable or pivotable, manner in the housing, and then function as an air guide element. An air guide element can be pivotably mounted in the housing such that the flow cross-section between the air guide element and the opposite wall sections of the air duct can be changed by pivoting the air guide element, analogous to a displacement of the air guide element. The air deflection orthogonal to the at least one first slat is thereby further improved. A pivotable air guide element supports the air deflection, since the air guide surface, along which a main air stream can flow, extends in the direction selected for air deflection by pivoting the air guide element.

[0028] With the air vent, two partial air streams are created in the air outlet area, which can collide. Depending on the position of the second slat, the air is deflected, for example, upwards or downwards, depending on the air directed into the corresponding areas between the decorative element and the opposite wall sections.

[0029] The arrangement with a second louvre, which is arranged upstream of the at least one first louvre in the direction of air flow, also offers the advantage over known designs from the prior art that no noise is generated due to pressure losses, since incoming air, due to the arrangement of the at least one first louvre in front of the decorative element in the direction of air flow, also allows air distribution into an area of ​​the air duct that would be closed off if the second louvre were arranged directly on the decorative element. The at least one first louvre therefore ensures that air can get between the decorative element and the opposite wall section in all positions of the second louvre. However, in the maximum pivoted positions of the second louvre, the air flowing in between only accounts for a small proportion of the total air flow and therefore does not cause any additional air deflection.

[0030] The decorative element can additionally have a cross-sectional shape with curved sections designed to achieve a permanent airflow expansion. For this purpose, the decorative element has correspondingly curved sections.

[0031] In addition, the air vent can have an operating element that is movably mounted on and / or in the decorative element and coupled to the at least one first slat and / or the second slat. In versions with a pivotably mounted air guide element, this can cause the second slat to pivot in the opposite direction when pivoted. For this purpose, for example, gear sections can be provided, with a first gear section arranged on the air guide element and a second gear section arranged on the second slat or coupled to these, and the gear sections meshing with one another. In addition, an operating element can be provided that only acts on the second slat when the decorative element is rigidly arranged or mounted so that it can move in the direction of air flow. The at least one first slat can also be pivoted using an operating element.For this purpose, the control element can be mounted on a rigidly or movably arranged decorative element so that it can be displaced in the longitudinal direction of the decorative element. The pivoting of at least one first slat is then achieved via a coupling device.

[0032] The air vent can have a plurality of first louvers, with the second louver having a plurality of coupling sections via which the first louvers are connected to the second louver. In this embodiment, the second louver can serve, in addition to its air-guiding function, as a driver for pivoting the first louvers. This further simplifies the design of the air vent.

[0033] The air vent can further comprise a plurality of first slats, wherein the first slats have a recess on their front side facing the air outlet opening and surround the decorative element at least in part at the rear. The sections of the first slats that surround the decorative element at least in part are located in the first region and in the second region of the first slat. The lateral air deflection via the first slats is thereby further improved, since the first slats are directed further toward the air outlet opening.

[0034] According to the invention, the entire flow cross-section of the air duct can be varied via the at least one second slat. The flow cross-section in a neutral position of the at least one second slat in the first section corresponds to the flow cross-section in the second section. This further improves air deflection. In addition, the decorative element can be located in a central section. Air deflection via appropriately designed wall sections that have a curve is also improved with a central decorative element. The at least one first slat is arranged in a section that, according to the invention, is located in the transition from the first section to the second section.

[0035] In further embodiments, the flow cross-section of the air duct and / or the flow cross-section of the decorative element can be designed such that the cross-sectional area in the section of the air duct due to the decorative element is a maximum of 20% smaller than the cross-sectional area of ​​the air duct in the second section located behind it.

[0036] In further embodiments, the air vent can be illuminated. For this purpose, components of the air vent can be made of an at least partially translucent plastic and, for example, have a coating that leaves only a certain area exposed for illumination. In further embodiments, translucent plastics can also be incorporated. The illumination can be provided via fiber optics and / or lighting elements, such as light-emitting diodes. Furthermore, the lighting can be controlled such that the illumination changes depending on the temperature of the outgoing air and the air volume. Adaptation of the lighting to weather, light, and daytime conditions can also be provided.

[0037] The components of the air vent can be made of plastic and can therefore be produced cost-effectively in large quantities using an injection molding process.

[0038] The air vent has several advantages over known designs, as it achieves improved lateral air deflection and prevents noise by completely closing off partial air ducts.

[0039] Further features, advantages and design options emerge from the following description of figures of non-limiting embodiments. Brief description of the drawings

[0040] In the drawings shows: Fig. 1 is a schematic representation of an air vent of a first embodiment; Fig. 2 is a schematic representation of the air vent of Fig. 1 in a pivoted position; Fig. 3 a schematic representation of the air outlet of Fig. 1in a further pivoted position; Fig. 4 shows a schematic representation of an air vent of a second embodiment; and Fig. 5 shows a perspective representation of components of an air vent of a third embodiment.

[0041] Components with the same reference numerals in the drawings essentially correspond to one another unless otherwise indicated. Furthermore, the illustration and description of components that are not essential to understanding the technical teachings disclosed herein are omitted. Detailed description of implementation examples

[0042] The Fig. 1 to 3show various designs of an air vent 10. Such air vents 10 can be arranged, for example, in a vehicle's dashboard. The air vents 10 are designed as gap vents and therefore have a low discharge height and a large discharge width. However, the gap vents can also be arranged such that the larger extent of the air outlet opening extends substantially vertically or obliquely.

[0043] The air vents 10 of the first to third embodiments are made of plastic. They can therefore be manufactured cost-effectively in large quantities using an injection molding process. The plastic design of the air vents 10 also applies to their components, such as an air guide element 30, a first louvre 40, a second louvre 50, the housing 12, an operating element 60, and a shaft 70.

[0044] Fig. 1shows a schematic representation of an air vent 10 of a first embodiment. The air vent 10 has a housing 12. The housing 12 is divided into a first section and a second section, wherein the first section has opposing curved wall sections 14 and the second slat 50 is pivotally mounted in the second section. First slats 40 and an air guide element 30 are pivotally mounted in the first section. The air guide element 30 is a pivotable decorative element, so it is referred to below as the air guide element 30.

[0045] The housing 12 has an air inlet opening 16 in the second section and an air outlet opening 18 in the first section. An air duct 20 is defined between the air inlet opening 16 and the air outlet opening 18, through which incoming air is guided via the air inlet opening 16 through the air outlet 10. In the second section, in the region of the air inlet opening 16, the housing 12 has a connection to a ventilation device such as an air conditioning system. Conditioned air is supplied to the air outlet 10 via the air conditioning system. By pivoting the second louvre 50 and the air guide element 30 as well as the first louvres 40, the air discharged via the air outlet opening 18 can be deflected.

[0046] In the area of ​​the air outlet opening 18, the upper wall section 14 extends further forward than the wall section 14 located below it. The design of the wall sections 14 in the area of ​​the air outlet opening 18 depends on the respective application and / or the design specifications and / or the desired air deflection. The wall sections 14 are curved, thereby achieving air deflection. Fig. 1In the neutral position shown, an air flow supplied via the air inlet opening 16 is not deflected and flows essentially in a straight line out of the air outlet opening 18. In this case, the two partial air flows that occur between the wall sections 14 and the air guide element 30 can meet in the area of ​​the air outlet opening 18, thereby forming the straight air outlet flow. In pivoted positions of the air guide element 30 and the second slat 50, one of the partial air flows becomes larger, so that it dominates the air deflection and thus the air deflection upwards and downwards (see Fig. 2 and 3 ) is caused.

[0047] The second louvre 50 has a substantially V-shaped section at its end facing the air outlet opening 18. This section serves to direct the air flowing in via the air inlet opening 16 into a first region of the first louvre 40 and a second region of the first louvre 40. The second louvre 50 serves to direct the air flow into the corresponding regions of the first louvre 40.

[0048] The second slats 40 have in the Fig. 1 shown first embodiment, a contour that is designed according to the curvature of the wall sections 14. The first slats 40 also have bearing pins 42, via which the first slats 40 are mounted in the housing 12 of the air vent 10. The mounting of the second slat 50 is in Fig. 1not shown. However, the second slat 50 is also pivotably mounted in opposite side walls of the housing 12 and coupled to the air guide element 30. The air guide element 30 is also pivotably mounted in the opposite housing walls of the housing 12 via bearings (not shown). The air guide element 30 has a curved shape at the front and in a central region. The surface facing the air outlet opening 18 has a substantially parabolic cross-section. The design of the air guide element 30 can assist the air deflection, particularly in the pivoted positions.

[0049] For air deflection, the air guide element 30 and the second louvre 50 are pivotably mounted in the opposite housing walls of the air vent 10. The first louvres 40 are pivotably mounted about pivot axes S in the opposite wall sections 14 of the housing 12.

[0050] Fig. 2 shows a schematic representation of the air outlet 10 of Fig. 1in a first pivoted position. In the position shown, air is deflected downwards. This is achieved by air flowing in via the air inlet opening 16 being guided through the second louvre 50 into an upper region of the first louvres 40. The air flow is therefore divided in the second section of the housing 12. The incoming air then reaches the upper region of the first louvres 40 and is deflected laterally by the first louvres 40, i.e., orthogonally to the second louvre 50. Since the deflection via the first louvres 40 occurs after the air flow has been fed into the upper or, accordingly, lower region of the louvres 40, the lateral air deflection via the first louvres 40 in the region of the air outlet opening 18 is not weakened.After the incoming air has been additionally deflected via the first slats 40 or has flowed through the upper region of the first slats 40 without lateral deflection, the air is deflected via the curvature of the wall sections 14, at . Fig. 2 of the upper wall section 14, such that the air flow is discharged downwards. For this purpose, the air guide element 30 has been pivoted downwards, providing intuitive control for the user. Pivoting the air guide element 30 also supports the downward air deflection, since the surface of the air guide element 30, which faces the main flow direction, also runs in the main flow direction.

[0051] In addition to the improved lateral air deflection via the second slats 40, the distance between the second slat 50 and the air guide element 30 ensures that even in the Fig. 2shown maximum position, wherein the second slat 50 rests directly against a housing wall of the air vent 10, no disturbing noises occur due to strong pressure differences caused by a partial blockage of the air duct 20. This ensures that incoming air can pass between the second slat 50 and the air guide element 30 into the lower area of ​​the first section. Although the amount of incoming air into the lower area is significantly lower and therefore does not influence the air deflection, it prevents excessive pressure differences in the various positions of the components and thus prevents the formation of noise. An outflow in the lower area in the region of the air outlet opening 18 can be tolerated, since this does not significantly influence the air outlet and the air deflection downwards.

[0052] Fig. 3 shows a schematic representation of the air outlet 10 of Fig. 1 in a further pivoted position, wherein the air guide element 30 has been pivoted upwards and, via the coupling with the second slat 50, has also been moved upwards to its maximum position. Accordingly, an upward deflection of the air occurs, with incoming air being guided essentially into the lower region of the air duct 20 in the first section and, due to the curvature of the lower section 14, is guided upwards. In addition, a small partial air flow can reach the upper region of the first section, so that no noise is generated, since strong pressure differences in the various positions of the second slat 50 and the air guide element 30 are prevented.

[0053] The first slats 40 can also be used to achieve lateral air deflection.

[0054] Fig. 4 shows a schematic representation of an air vent 10 of a second embodiment. Fig. 4 shows only components such as an operating element 60, a decorative element 80, a first slat 40, and a second slat 50, with different positions for the second slat 50 being schematically represented by the dashed lines. The second embodiment differs from the first embodiment essentially in that a cylindrical or roller-shaped decorative element 80 is provided instead of an air guide element 30. The decorative element 80 can also be rotated, whereby a coupling with the second slat 50, depending on the pivoting of the decorative element 80 via the operating element 60, achieves an opposite pivoting of the second slat 50 in order to ensure intuitive use.

[0055] Another difference between the first embodiment and the second embodiment is that the first slats 40 have a recess 44. The recess 44 allows the lateral air deflection via the first slats 40 to be further improved, since the upper and lower regions of the slats 40 extend further toward the air outlet opening 18. In other embodiments not shown, the upper and lower regions of the first slats 40 can also extend even further toward the air outlet opening 18.

[0056] Fig. 5 shows a perspective view of components of an air vent 10 of a third embodiment.

[0057] As already shown for the second embodiment, the first slats 40 have a recess 44. The decorative element 80 is in Fig. 5not shown in order to show the internal components. The decorative element 80 is also designed as a roller, as already for the second embodiment (see Fig. 4 ) shown. A gripper 62 of the operating element 60 is accommodated inside the decorative element 80. The operating element 60 is accessible from the outside via a recess in the decorative element 80 and, by being displaced upwards and downwards, can cause both a pivoting and a rotation of the decorative element 80 and the second slat 50. The operating element 60 can cause a pivoting of the first slats 40, for which purpose the operating element 60 is mounted on a shaft 70 so as to be displaceable along the longitudinal axis of the decorative element 80.

[0058] The gripper 62 is designed so that it can be moved along the shaft 70. For this purpose, the shaft 70 and the gripper 62 have guide means that enable the gripper 62 to be moved along the longitudinal axis of the shaft 70. Therefore, rotation of the gripper 62 about the shaft 70 is not possible. The shaft 70 and the gripper 62 are always pivoted together about the pivot axis of the shaft 70.

[0059] The shaft 70 has a gear portion 72 at at least one end portion. The gear portion 72 engages with a gear portion 54. The gear portion 54 is located at one end of a lever 52. The lever 52 is connected to the second plate 50.

[0060] The shaft 70 is pivotally mounted in the opposite side walls of the housing 12 via bearing pins 74 located at opposite ends of the shaft 70. The second louvre 50 is also pivotally mounted in the opposite side walls of the housing via the bearing pin 56. If the control element 60 is pivoted up and down, for example, a coupling with the second louvre 50 via the gear sections 54 and 72 causes an opposite pivoting movement. This allows the inflowing air to be directed into an upper region and a lower region of the first louvres 40. In addition, the control element 60 can be displaced along the shaft 70, causing the first louvres 40 to pivot. The first louvres 40 are movably coupled to one another via a coupling device.

[0061] The gripper 62 additionally has a Fig. 5not shown, has a fork-shaped connection to a bracket which is connected to a control slat 40 of a group of first slats 40. If the gripper 62 is moved, this causes the control slat 40 to pivot and, via the coupling between them, also causes the other first slats 40 to pivot.

[0062] Instead of the Fig. 5 In addition to the coupling of the operating element 60 via the gear sections 54 and 72 shown, a different coupling can also be provided between a decorative element 80 and a second slat 50. Furthermore, the coupling with the first slats 40 can also be implemented in a different way.

[0063] In the embodiments shown, the air guide elements 30 and the decorative elements 80 are always pivotably mounted in the housing 12. In other embodiments not shown, however, the decorative elements 80 can also be rigidly arranged in the housing 12. Furthermore, the air vents 10 can have lighting devices that provide illumination of components or areas of the air vent 10.

[0064] Unlike in the Fig. 1 to 3 As shown, the air guide element 30 can also have an operating element that is displaceably arranged on the section of the air guide element 30 facing the air outlet opening 18. Displacing such an operating element causes the first slats 40 to pivot. If the operating element is moved up and down, the air guide element 30 pivots and, via the coupling with the second slat 50, pivots in the opposite direction. List of reference symbols

[0065] 10 Air vent 12 Housing 14 Wall section 16 Air inlet opening 18 Air outlet opening 20 Air duct 30 Air guide element 40 First louvre 42 Bearing pin 44 Recess 50 Second louvre 52 Lever 54 Gear section 56 Bearing pin 60 Operating element 62 Grip 70 Shaft 72 Gear section 74 Bearing pin 80 Decorative element Swivel axis

Claims

1. An air vent (10), having a housing (12) with an air duct (20) in which a decorative element (80), at least one first blade (40) and at least one second blade (50) are arranged, wherein - the decorative element (80) is arranged in a section of the air duct (20) facing an air outlet opening (18), - the at least one first blade (40) is arranged upstream from the decorative element (80) in the air duct (20) in the direction of air flow, the at least one second blade (50) is arranged upstream from the at least one first blade (40) in the direction of air flow in a section of the air duct (20) facing an air inlet opening (16), - the at least one first blade (40) and the at least one second blade (50) are mounted in a pivotable manner on and / or in the housing (12), - the volume of air supplied into a first area and a second area of the at least one first blade (40) can be regulated by means of the at least one second blade (50), - the at least one first blade (40) is mounted essentially orthogonally to the pivot axis of the at least one second blade (50) and mounted essentially orthogonally to the longitudinal axis of the decorative element (80), - the decorative element (80) and the at least one first blade (40) are arranged in a first section of the air duct (20), and the at least one second blade (50) is arranged in a second section of the air duct (20), the first section having curved wall sections (14) positioned opposite the decorative element (80) and the second section having a smaller flow cross-section than the first section, and - the entire flow cross-section of the air duct (20) can be modified via the at least one second blade (50), characterised in that - the flow cross-section in a neutral position of the at least one second blade (50) in the first section corresponds to the flow cross-section in the second section, and - the at least one first blade (40) is arranged in a section which is located in the transition from the first section to the second section.

2. An air vent (10) according to claim 1, wherein the housing (12) has rounded air outlet edges in the area of the air outlet opening (18).

3. An air vent (10) according to claim 1 or 2, wherein the decorative element (80) at its end facing the air inlet opening (16) and / or at its end facing the air outlet opening (18) is formed in a curved manner such that an air flow expansion can be achieved by utilising the Coanda effect and the air deflection is supported.

4. An air vent (10) according to one of claims 1 to 3, wherein the decorative element is designed as an air control element (30) and is mounted so as to be adjustable in the direction of air flow.

5. An air vent (10) according to one of claims 1 to 3, wherein the decorative element is designed as an air control element (30) and is mounted in a pivotable manner in the housing (12) so that the flow cross-section between the air control element (30) and opposite wall sections (14) of the air duct (20) can be modified by pivoting the air control element (30).

6. An air vent (10) according to one of claims 1 to 5, wherein the decorative element (80) has a cross-sectional shape with curved sections designed in such a way that a sustained expansion of the air flow can be achieved.

7. An air vent(10) according to one of claims 1 to 6, having an operating element (60) which is movably mounted on and / or in the decorative element (80) and is coupled with the at least one first blade (40) and / or the at least one second blade (50).

8. An air vent (10) according to one of claims 1 to 7, having a plurality of first blades (40), wherein the at least one second blade (50) has a plurality of coupling sections by which means the first blades (40) are connected to the at least one second blade (50).

9. An air vent (10) according to one of claims 1 to 8, having a plurality of first blades (40), wherein the first blades (40) have a recess (44) on their front side facing the air outlet opening (18) and at least in sections surround the decorative element (80) on the rear side.