An air conditioning register includes: a retainer, fins, a connecting plate and a drive mechanism; wherein: connecting pins of the fins are engaged with cam grooves provided in the connecting plate so that all fins are connected to the connecting plate, wherein: each of the cam grooves has a parallel blowing zone for bring adjacent fins into a parallel blowing mode, and has a diffusion blowing zone for bringing adjacent fins into a diffusion blowing mode; and the drive mechanism is provided with an allowing part which allows the connecting plate to move in the arrangement direction of the fins, while maintaining the zone where each connecting pin is positioned in each cam chamber in the parallel blowing zone, when the operation of tilting the fins is performed with the fin shafts as a fulcrum, and only when each connecting pin is in the parallel blowing zone.

A vehicular register apparatus includes an apparatus body having a ventilation path with a downstream end provided as a blow outlet to a vehicle room. Fins are arranged in the ventilation path. The fins are spaced to each other in a first direction intersecting with an airflow direction. Each of the fins extends in a second direction intersecting with the airflow direction and the first direction. The fins respectively have shaft parts for supporting the fins on the apparatus body. The apparatus body includes guide passages for swingably and slidably supporting the shaft parts. The guide passages are formed so as to be apart in the first direction from each other toward the vehicle room.

A blowing device of an air conditioner includes a case (20) connected to an air conditioner of a vehicle; a ventilating flow path (50) formed from an inlet port (50c) to an outlet port (50d) of the case (20); a first inclined portion (51) provided on the inlet port (50c) side of the case (20); a second inclined portion (52) provided on the outlet port (50d) side of the case (20); an intermediate portion (53) formed between the first inclined portion (51) and the second inclined portion (52) in the case (20); and an airflow direction changing device (40) provided in the ventilating flow path (50) and capable of changing an airflow direction of an inflow wind through the inlet port (50c) toward a space between the outlet port (50d) and the intermediate portion (53), wherein the airflow direction changing device (40) includes a plurality of fins (40f) inclined in conjunction with each other.

An air outlet nozzle, in particular for a motor vehicle, includes: a tube-shaped nozzle body; a first air guide element which is arranged in the tube-shaped nozzle body, and which is in contact with the tube-shaped nozzle body and forms a screw shape; a second air guide element which is arranged in the tube-shaped nozzle body, and which is in contact with the tube-shaped nozzle body and forms a screw shape. The first air guide element and the second air guide element are offset from one another in the tube-shape nozzle body, such that a first airway and a second airway are formed in the tube-shaped nozzle body. A moving adjustment element closes the first airway in a first position, and releases the first airway in a second position.

The invention concerns a ventilator for a motor vehicle passenger compartment, intended to deliver an air flow towards a space to be conditioned, which comprises: an opening through which an air flow flows during operation, a flared guiding surface (S), extending from the opening, a needle valve (25) comprising a needle valve head (27) with: a tip (29) situated at the end of the needle valve (25), a maximum width portion corresponding in shape to the opening (O), with dimensions of between 80% and 100% of those of the opening (O), a base (33) flared in the direction of flow linking the head (29) to an elongate body (31), the needle valve (25) being able to move in translation between two end positions including: a deployed end position in which the widest portion of the needle valve head (27) is downstream from the opening (O) in the direction of the space to be conditioned, the air flow then being laminar and guided by the guiding surface (S) in a divergent flow, a retracted end position in which the widest portion of the needle valve head (27) is upstream from the opening (O), the air flow then being laminar and guided by the tip (29) of the needle valve (25) in a convergent flow.

A heat control method for a heat control device, particularly for a vehicle interior, is disclosed. The method involves detecting, delimiting and positioning various parts of the body of an occupant (U), measuring thermal or physiological parameters regarding various parts of the body of the occupant (U) and/or the vehicle interior around the occupant (U), establishing a plurality of thermal comfort indices (I.sub.n), each thermal comfort index (I.sub.n) corresponding to one of the parts of the body of the occupant (U) taking into account a feeling of warmth or of cold in the associated body part, and of which the absolute value is at a minimum in a comfortable situation, and regulating the operation of a heat control device (3) to minimize a sum of the absolute values of the comfort indices (Σ|I.sub.n|) in order to create a regulated thermal environment around the occupant (U).

A fluid discharge device includes a base portion defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage, and a grill portion disposed to adjust a flow direction of the fluid blown from the opening. The grill portion includes a flow passage forming body defining a main flow passage and an auxiliary flow passage. In the flow passage forming body, the auxiliary flow passage surrounds the main flow passage and the auxiliary flow discharged from the auxiliary flow passage flows outside of the main flow discharged from the main flow passage. The flow passage forming body is configured such that a direction of the auxiliary flow discharged from the auxiliary flow passage corresponds to the direction of the main flow discharged from the main flow passage, when the flow direction of the fluid blown out of the opening is adjusted.

A blow-off device (10) is equipped with a wind direction variable means (40) and a pressure adjustment unit (60) in a ventilation passage (50). The wind direction variable means is rotatably provided in the ventilation passage and can change a conditioned air from the inflow port (50c) toward a blow-off port (50d) and a second inclined part (52r) along an intermediate part (53r). The pressure adjustment unit prevents the pressure of the ventilation passage from exceeding a predetermined value by releasing the conditioned air to the outside of the ventilation passage. A bypass inlet (66) of the pressure adjustment unit is provided on an upstream side of an end portion (42d) in a +X direction at the time of maximum rotation of the wind direction variable means.

An air discharge device is configured to discharge an air flow. The air discharge device includes a main hole for discharging an air flow as a working air flow, an auxiliary hole provided around the main hole to discharge a support air flow, and a vortex suppression structure configured to suppress development of vortices generated in a velocity boundary layer of the working air flow at a downstream side of an outlet of the main hole. This vortex suppression structure is configured to make a central portion of the thickness of the velocity boundary layer of the working air flow at the downstream side of the outlet of the main hole to be closer to a mainstream of the support air flow, at the downstream side of the outlet of the main hole.

An air vent is provided for directly introducing air into a passenger compartment of a vehicle. The air vent has at least one outlet opening and at least one deflecting surface which is arranged in the region of the outlet opening, which runs radially outwards with respect to a flow direction of the air flowing in the direction of the deflecting surface, and by which the air flowing in the direction of the deflecting surface can be deflected radially outwards using the Coanda affect. An intuitively controllable and inexpensively producible air vent is achieved in that the shape and arrangement of the deflecting surface is adapted to a flow speed of the air flowing in the direction of the deflecting surface such that it is equally probable that the air flowing in the direction of the deflecting surface is deflected radially outwards by the deflecting surface or it is not.