JP2020185834A - Air blow part - Google Patents

Abstract

To provide an air blow part which can elongate an arrival distance of air current which is blown to a blowout object while suppressing increase in physique.SOLUTION: A defroster blowout part 50 comprises: a defroster duct 51 which forms a blowout flow passage 510 through which air blown out toward a windscreen W passes; and a defroster blowout member 52 which forms a defroster blowout hole 520 in a flat hole shape which blows out air toward the windscreen W. A hole peripheral edge part 521 which surrounds the defroster blowout hole 520 of the defroster blowout member 52 is so configured as to include: a pair of long edge parts 522, 523 which so extend as to face each other; and a pair of short edge parts 524, 525 which are connected to both ends of the pair of long edge parts 522, 523. One of the pair of long edge parts 522, 523 and the pair of short edge parts 524, 525 is provided with a diffusion suppression part 53 which suppresses diffusion of air current which is blown out to a blowout object from the defroster blowout hole 520.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to an air blowing portion that blows air toward a blowing target.

Conventionally, in order to increase the reach of the airflow that becomes the working airflow, an auxiliary airflow hole that forms a support airflow that prevents the air drawn into the working airflow from being drawn in is provided around the main airflow hole that forms the working airflow. Air nozzles are known (see, for example, Patent Document 1). The air nozzle described in Patent Document 1 is formed so that a plurality of auxiliary outlet holes surround the main outlet holes at equal intervals in a satellite shape at the peripheral edge of the main outlet holes.

Japanese Unexamined Patent Publication No. 8-318176

By the way, if a plurality of auxiliary outlet holes are to be formed so as to surround the main outlet holes at equal intervals in a satellite shape with respect to the air outlet portion, it is necessary to increase the peripheral portion of the main outlet holes. This is not preferable because it causes an increase in the physique of the air blowing portion.

An object of the present disclosure is to provide an air blowing portion capable of increasing the reach of the airflow blown to the blowing target while suppressing the increase in size of the physique.

The invention according to claim 1
It is an air blowing part that blows air toward the blowing target.
Ducts (51, 61, 71, 81) forming blowout channels (510, 610, 710, 123B) through which air blown toward the blowout target passes, and
Hole-forming members (52, 62, 63, 72) that form flat hole-shaped outlet holes (520, 620, 630, 720, 730, 820) that blow air toward the blow target on the downstream side of the air flow of the duct. , 73, 82), and
Among the hole forming members, the hole peripheral portions (521, 621, 631, 721, 731, 821) surrounding the blowout holes are paired with long edge portions (522, 523, 622, 623, 632, 633, which extend opposite to each other. 722, 723, 732, 733, 822, 823) and a pair of short edge portions (524) that are connected to both ends of the pair of long edge portions and face each other with a distance larger than the distance between the pair of long edge portions. , 525, 624, 625, 634, 635, 724, 725, 734, 735, 824, 825), and one of the pair of long edges and the pair of short edges is to be blown out from the blow hole. A diffusion suppression unit (53, 66, 67, 76, 77, 83) that suppresses the diffusion of the airflow blown out to the airflow is provided.

According to this, the diffusion suppressing portion provided at the peripheral portion of the hole of the blowout hole makes it difficult for the airflow blown out to the blowout target to diffuse, so that the reach of the airflow blown out from the blowout hole to the blowout target can be lengthened. In particular, the diffusion suppressing portion is provided on one of a pair of long edge portions and a pair of short edge portions constituting the hole peripheral edge portion. For this reason, it is possible to reduce the physique of the air blowing portion as compared with the case where the diffusion suppressing portions are provided so as to surround the blowing holes in a satellite shape at equal intervals.

Therefore, according to the air blowing portion of the present disclosure, it is possible to increase the reach of the airflow blown out to the blowing target while suppressing the increase in size of the physique.

The reference reference numerals in parentheses attached to each component or the like indicate an example of the correspondence between the component or the like and the specific component or the like described in the embodiment described later.

It is a schematic diagram which shows the interior side of the vehicle including the defroster blowing part which concerns on 1st Embodiment. It is a schematic sectional view of the air-conditioning unit including the defroster blowing part which concerns on 1st Embodiment. It is a schematic top view which shows the defroster blowing part which concerns on 1st Embodiment. FIG. 3 is a sectional view taken along line IV-IV of FIG. It is a schematic diagram which shows the interior front of the vehicle including the defroster blowing part which concerns on 1st Embodiment. It is a schematic top view which shows the defroster blowing part which becomes the comparative example of 1st Embodiment. FIG. 6 is a sectional view taken along line VII-VII of FIG. It is explanatory drawing for demonstrating the flow of the airflow blown out from the defroster blowing part which concerns on 1st Embodiment. It is a schematic diagram which shows the 1st modification of the defroster blowing part which concerns on 1st Embodiment. It is a schematic diagram which shows the 2nd modification of the defroster blowing part which concerns on 1st Embodiment. It is a schematic cross-sectional view which shows the defroster blowing part which concerns on 2nd Embodiment. It is a schematic top view which shows the interior front of the vehicle including the face blowing part which concerns on 3rd Embodiment. It is a schematic front view which shows the interior front of the vehicle including the face blowing part which concerns on 3rd Embodiment. It is explanatory drawing for demonstrating the flow of the airflow blown out from the face blowing part which concerns on 3rd Embodiment. It is a schematic front view which shows the interior front of the vehicle including the face blowout part which concerns on 4th Embodiment. It is explanatory drawing for demonstrating the flow of the airflow blown out from the face blowing part which concerns on 4th Embodiment. It is a schematic front view which shows the interior front of the vehicle including the foot blowing part which concerns on 5th Embodiment. It is a schematic bottom view in the front of the interior of the vehicle including the foot blowing portion according to the fifth embodiment. It is explanatory drawing for demonstrating the flow of the airflow blown out from the foot blowing part which concerns on 5th Embodiment. It is a schematic bottom view in the front of the interior of the vehicle including the foot blowing portion according to the sixth embodiment. It is explanatory drawing for demonstrating the flow of the airflow blown out from the foot blowing part which concerns on 6th Embodiment. It is a schematic cross-sectional view of the air conditioning unit including the cold air blowing part which concerns on 7th Embodiment. It is an enlarged view of the XXIII part of FIG. It is sectional drawing of XXIV-XXIV of FIG. It is explanatory drawing for demonstrating the flow of the airflow blown out from the cold air blowing part which concerns on 7th Embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following embodiments, the same reference numerals may be assigned to parts that are the same as or equivalent to those described in the preceding embodiments, and the description thereof may be omitted. Further, when only a part of the component is described in the embodiment, the component described in the preceding embodiment can be applied to the other part of the component. The following embodiments can be partially combined with each other as long as the combination does not cause any trouble, even if not explicitly stated.

(First Embodiment)
This embodiment will be described with reference to FIGS. 1 to 8. In the present embodiment, an example in which the air blowing portion of the present disclosure is applied to the defroster blowing portion 50 will be described. The arrows indicating up / down, front / rear, and left / right in each drawing indicate the vertical direction DR1, the front-rear direction DR2, and the width direction DR3 in the vehicle-mounted state.

The air conditioner unit 10 together with a blower unit (not shown) constitutes a ventilation system for a vehicle air conditioner. As shown in FIG. 1, the air conditioning unit 10 is arranged inside the instrument panel IP located at the foremost part of the interior of the vehicle 1. The instrument panel IP is installed in front of the seat S on which the occupant sits. The seat S has a seat cushion Sc that supports the vicinity of the buttocks of the occupant and a seat back Sb that supports the vicinity of the back of the occupant.

Although not shown, the blower unit is composed of an inside / outside air switching box and a blower that sucks and blows air through the inside / outside air switching box. The inside / outside air switching box is formed with an outside air introduction port for introducing outside air (that is, vehicle interior air) and an inside air introduction port for introducing inside air (that is, vehicle interior air). The outside air introduction port and the inside air introduction port are opened and closed by the inside / outside air switching door.

The blower includes a centrifugal fan, a drive motor, and a scroll case. Specifically, the blower has two sets of a centrifugal fan and a scroll case. The blower unit can switch the air suction mode to an outside air mode for blowing outside air, an inside air mode for blowing inside air, and an inside / outside air two-layer mode for distinguishing between outside air and inside air.

As shown in FIG. 2, in the air conditioning unit 10, an evaporator 14 and a heater core 16 which are means for controlling the temperature of the blown air are housed inside the air conditioning case 12. The air conditioning case 12 is made of a molded product of a resin (for example, polypropylene) having a certain degree of elasticity and excellent strength.

The air conditioning case 12 is composed of a plurality of divided cases. That is, the air conditioning case 12 is composed of a combined body in which a plurality of divided cases are integrally connected by fastening means such as metal spring clips and screws.

Although not shown, two air inlets are formed on the side surface of the most front portion of the air conditioning case 12. The two air inlets are connected to two sets of scroll cases arranged in the blower unit so that the outside air flows into the first air inlet and the inside air flows into the second air inlet in the inside / outside air two-layer mode. Has been done.

Inside the air conditioning case 12, the upper and lower partition plates 121 are formed so as to extend over the entire width direction DR3. The upper and lower partition plates 121 are integrally molded with the air conditioning case 12. The air passage formed inside the air conditioning case 12 is divided into a first air passage 122 and a second air passage 123 by an upper and lower partition plate 121.

The first air passage 122 is a passage located above the upper and lower partition plates 121, and is configured so that the air flowing in from the first air inlet flows. Further, the second air passage 123 is a passage located below the upper and lower partition plates 121, and is configured so that the air flowing in from the second air inlet flows. The second air passage 123 is arranged on the lower side of the first air passage 122. Then, in the case of the inside / outside air two-layer mode, the outside air flows through the first air passage 122, and the inside air flows through the second air passage 123.

An evaporator 14 is arranged inside the air conditioning case 12 immediately after the air inlet. The evaporator 14 is arranged inside the air conditioning case 12 so as to cross each of the first air passage 122 and the second air passage 123. Specifically, the vertical dimension of the vertical DR1 of the evaporator 14 is formed to be substantially the same as the vertical dimension of the air conditioning case 12. Although not shown, the dimension of the width direction DR3 of the evaporator 14 is formed to be substantially the same as the width dimension of the air conditioning case 12.

The evaporator 14 is a refrigerant evaporator that evaporates the refrigerant in a vapor compression refrigeration cycle apparatus. The evaporator 14 is a cooling heat exchanger that cools air by the latent heat of vaporization of the refrigerant. The evaporator 14 is arranged so as to penetrate through a through hole provided in the upper and lower partition plates 121. The upper part of the evaporator 14 is located in the first air passage 122, and the lower part is located in the second air passage 123. As a result, the evaporator 14 cools the air flowing through the first air passage 122 at the upper part and cools the air flowing through the second air passage 123 at the lower part.

Further, on the downstream side (that is, the rear side) of the air flow of the evaporator 14, the heater core 16 is arranged at a predetermined interval from the evaporator 14. The heater core 16 is formed so that the vertical dimension of the vertical DR1 is smaller than the vertical dimension of the air conditioning case 12. Further, although not shown, the dimension of the heater core 16 in the width direction DR3 is formed to be substantially the same as the width dimension of the air conditioning case 12.

The heater core 16 is a heating heat exchanger that heats the blast air that has passed through the evaporator 14 and is cooled to generate warm air. The heater core 16 heats the blown air by exchanging heat between the engine cooling water whose temperature has been raised by the exhaust heat of the engine and the blown air.

The heater core 16 is arranged so as to penetrate through a through hole provided in the upper and lower partition plates 121. The upper part of the heater core 16 is located inside the first air passage 122, and the lower part is located inside the second air passage 123. As a result, the heater core 16 heats the air flowing through the first air passage 122 at the upper part and the air flowing through the second air passage 123 at the lower part.

Specifically, the first air passage 122 is divided into an upper side warm air passage 122A and an upper side bypass passage 122B by an upper side partition portion 124 provided in the space where the heater core 16 is arranged. The upper partition portion 124 is arranged adjacent to the upper portion of the heater core 16. The upper partition portion 124 has a concave shape so as to cover the upper portion of the heater core 16. The upper warm air passage 122A is an air passage that passes through the upper part of the heater core 16. Further, the upper bypass passage 122B is formed above the heater core 16 and is a passage for allowing cold air that has passed through the evaporator 14 to bypass the heater core 16.

On the other hand, the second air passage 123 is divided into a lower warm air passage 123A and a lower bypass passage 123B by a lower partition portion 125 provided in the space where the heater core 16 is arranged. The lower partition portion 125 is arranged adjacent to the lower part of the heater core 16. The lower partition portion 125 has a concave shape so as to cover the lower portion of the heater core 16. The lower warm air passage 123A is an air flow passage that passes through the lower part of the heater core 16. Further, the lower bypass passage 123B is formed below the heater core 16 and is a passage for allowing cold air that has passed through the evaporator 14 to bypass the heater core 16.

In the upper part of the air conditioning case 12, a first air mix door 181 is arranged between the evaporator 14 and the heater core 16. The first air mix door 181 is composed of a sliding door that slides and moves substantially parallel to the front surface of the heater core 16. The first air mix door 181 is slidable between the maximum heating position that closes the upper bypass passage 122B and the maximum cooling position that closes the upper warm air passage 122A.

The first air mix door 181 adjusts the air volume ratio between the hot air passing through the upper hot air passage 122A and the cold air passing through the upper bypass passage 122B. Then, the hot air passing through the upper side hot air passage 122A and the cold air passing through the upper side bypass passage 122B are merged in the first mixing space 126 inside the air conditioning case 12 and mixed to reach a desired temperature. ..

Further, in the lower part of the air conditioning case 12, a second air mix door 182 is arranged between the evaporator 14 and the heater core 16. The second air mix door 182 is composed of a sliding door that slides and moves substantially parallel to the front surface of the heater core 16. The second air mix door 182 is slidable between the maximum heating position that closes the lower bypass passage 123B and the maximum cooling position that closes the lower warm air passage 123A.

The second air mix door 182 adjusts the air volume ratio between the hot air passing through the lower warm air passage 123A and the cold air passing through the lower bypass passage 123B. Then, the hot air passing through the lower side hot air passage 123A and the cold air passing through the lower side bypass passage 123B are merged in the second mixing space 127 inside the air conditioning case 12 and mixed to reach a desired temperature. ..

The air-conditioning case 12 is formed with a plurality of blowout openings for blowing air flowing inside the air-conditioning case 12 into the vehicle interior. Specifically, the air conditioning case 12 is formed with a defroster opening 20, a face opening 22, and a foot opening 24.

The defroster opening 20 is formed in a portion of the upper surface of the air conditioning case 12 adjacent to the first mixing space 126. An air conditioner air adjusted to a desired temperature flows into the defroster opening 20 in the first mixing space 126. The defroster opening 20 is opened and closed by the defroster door 21, and the inflow of air conditioning air is switched by this opening and closing.

A defroster blowing portion 50 constituting the air blowing portion of the present disclosure is connected to the defroster opening 20. The defroster blowout portion 50 is a blowout portion that blows out air-conditioned air whose temperature is adjusted by the air-conditioning unit 10 toward the inside of the windshield W. The defroster blowout unit 50 targets the windshield W as a blowout target. The defroster blowing portion 50 has a defroster duct 51 and a defroster blowing member 52.

The defroster duct 51 is a duct that forms an outlet flow path 510 through which air blown toward the inside of the windshield W passes. The end of the defroster duct 51 on the upstream side of the air flow is connected to the defroster opening 20. Further, the end of the defroster duct 51 on the downstream side of the air flow is connected to the defroster blowing member 52.

The defroster blowing member 52 is a hole forming member that forms a defroster blowing hole 520 that blows air toward the inside of the windshield W. The defroster blowing member 52 is connected to the downstream side of the air flow of the defroster duct 51. The defroster blowing member 52 is fixed to the instrument panel IP by being fitted into an opening formed on the upper surface of the instrument panel IP.

The defroster blowout hole 520 targets the windshield W as a blowout target and is open to the instrument panel IP adjacent to the windshield W. The defroster outlet hole 520 has a flat hole shape.

As shown in FIG. 3, the defroster outlet hole 520 is composed of an elongated hole-shaped outlet hole extending in the width direction DR3 of the vehicle 1. In the defroster outlet hole 520, the dimension of the width direction DR3 when viewed from the air outlet direction is larger than the dimension of the front-rear direction DR2.

The defroster blowout member 52 has a hole peripheral edge portion 521 that surrounds the defroster blowout hole 520. The hole peripheral edge portion 521 is connected to both ends of the pair of long edge portions 522 and 523 extending opposite to each other and the pair of long edge portions 522 and 523, and is larger than the distance between the pair of long edge portions 522 and 523. It is configured to include a pair of short edge portions 524 and 525 facing each other at intervals.

The defroster blowout member 52 is installed on the instrument panel IP so that a pair of long edge portions 522, 523 of the defroster blowout hole 520 extend along the width direction DR3 of the vehicle 1.

The hole peripheral edge portion 521 is provided with a diffusion suppressing portion 53 that suppresses the diffusion of the airflow blown from the defroster blowing hole 520 to the inside of the windshield W. Specifically, the diffusion suppressing portion 53 is provided on the second long edge portion 523 of the pair of long edge portions 522 and 523, which has a large distance from the windshield W in the front-rear direction DR2. That is, the diffusion suppressing portion 53 is provided on the first long edge portion 522 and the pair of short edge portions 524, 525, which are close to the windshield W in the front-rear direction DR2, among the pair of long edge portions 522 and 523. Absent.

As shown in FIGS. 3 and 4, the diffusion suppressing unit 53 forms a plurality of microchannels 531 and a plurality of microchannels 532 that guide a part of the airflow flowing through the blowout channel 510 to the plurality of microholes 531. It is configured to include part 533.

The plurality of fine holes 531 are for jetting a part of the airflow flowing from the blowout flow path 510 to the defroster blowout hole 520 toward the windshield W. The plurality of fine holes 531 are composed of holes having an opening area smaller than that of the defroster outlet hole 520. The plurality of microholes 531 are formed side by side at equal intervals in the second long edge portion 523. The plurality of fine holes 531 are composed of round holes. The plurality of fine holes 531 are composed of through holes penetrating the front and back surfaces of the hole peripheral edge portion 521. The plurality of microholes 531 may be arranged at different intervals.

The partition portion 533 partitions the blowout flow path 510 and the fine flow path 532. The area of the plurality of fine flow paths 532 formed by the partition portion 533 is substantially constant from the upstream side to the downstream side of the air flow.

Returning to FIG. 2, the face opening 22 is formed in a portion of the upper surface of the air conditioning case 12 located behind the defroster opening 20. Air-conditioned air adjusted to a desired temperature flows into the face opening 22 in the first mixing space 126. The face opening 22 is opened and closed by the face door 23, and the inflow of air conditioning air is switched by this opening and closing.

A face outlet 60 is connected to the face opening 22. The face blowing portion 60 is a blowing portion that blows out air-conditioned air whose temperature is adjusted by the air-conditioning unit 10 toward the upper side of the seat cushion Sc on which the occupant of the vehicle 1 sits. The face blowing portion 60 targets the seat back Sb that supports the upper body of the occupant. The face blowing portion 60 includes a face duct 61, a first face blowing member 62, a second face blowing member 63, a third face blowing member 64, and a fourth face blowing member 65.

The face duct 61 is a duct that forms an outlet flow path 610 through which air blown upward toward the seat cushion Sc passes. The end of the face duct 61 on the upstream side of the air flow is connected to the face opening 22. Further, the face duct 61 is branched into four on the downstream side of the air flow, and the ends of the branched portion on the downstream side of the air flow are the first face blowing member 62, the second face blowing member 63, and the third face blowing member. 64, connected to the fourth face blowing member 65.

As shown in FIG. 5, the first face blowing member 62 and the second face blowing member 63 are blown out above the seat cushion Scd on the right side on which the driver is seated. Further, the third face blowing member 64 and the fourth face blowing member 65 are intended to blow out above the left seat cushion SCP on which the passenger is seated.

The first face blowing member 62 is a hole forming member that forms a center face blowing hole 620 that blows air-conditioned air from the center side of the vehicle 1 in the width direction DR3 toward the upper side of the seat cushion Scd on the right side on which the driver sits. ..

The second face blowing member 63 is a hole forming member that forms a side face blowing hole 630 that blows air-conditioning air from the right side of the width direction DR3 of the vehicle 1 toward the upper side of the seat cushion Scd on the right side on which the driver sits.

The third face blowout member 64 is a hole forming member that forms a center face blowout hole 640 that blows air-conditioned air from the center side of the vehicle 1 in the width direction DR3 toward the upper side of the left seat cushion SCP on which the passenger sits. ..

The fourth face blowout member 65 is a hole forming member that forms a side face blowout hole 650 that blows air-conditioning air from the left side of the vehicle 1 in the width direction DR3 toward the upper side of the seat cushion Scp on the left side on which the passenger sits.

The face blowing members 62 to 65 are fixed to the instrument panel IP by being fitted into the openings formed on the upper surface of the instrument panel IP.

Each face outlet hole 620, 630, 640, 650 is open to the instrument panel IP. Each face outlet hole 620, 630, 640, 650 has a flat hole shape. Specifically, each of the face outlet holes 620, 630, 640, and 650 is composed of elongated hole-shaped outlet holes extending in the vertical DR1 of the vehicle 1. In each of the face outlet holes 620, 630, 640, and 650, the dimension of the width direction DR3 when viewed from the air outlet direction is smaller than the dimension of the vertical direction DR1.

Returning to FIG. 2, the foot opening 24 is formed in a portion adjacent to the second mixing space 127 in the rear portion of the vehicle of the air conditioning case 12. The air-conditioned air adjusted to a desired temperature in the second mixing space 127 flows into the foot opening 24. The foot opening 24 is opened and closed by the foot door 25, and the inflow of air conditioning air is switched by this opening and closing.

A foot outlet 70 is connected to the foot opening 24. The foot blowing portion 70 is a blowing portion that blows out air-conditioned air whose temperature is adjusted by the air-conditioning unit 10 toward the lower side of the seat cushion Sc on which the occupant of the vehicle 1 sits. The foot blowing portion 70 targets the lower part of the seat cushion Sc that supports the lower body of the occupant. The foot blowing portion 70 has a foot duct 71, a first foot blowing member 72, a second foot blowing member 73, a third foot blowing member 74, and a fourth foot blowing member 75.

The foot duct 71 is a duct that forms an outlet flow path 710 through which air blown upward toward the seat cushion Sc passes. The end of the foot duct 71 on the upstream side of the air flow is connected to the foot opening 24. Further, the foot duct 71 is branched into four on the downstream side of the air flow, and the ends of the branched portion on the downstream side of the air flow are the first foot blowing member 72, the second foot blowing member 73, and the third foot blowing member. 74, connected to the fourth foot blowout member 75.

As shown in FIG. 5, the first foot blowing member 72 and the second foot blowing member 73 are blown out below the seat cushion Scd on the right side on which the driver is seated. Further, the third foot blowing member 74 and the fourth foot blowing member 75 are targeted for blowing below the seat cushion Scp on the left side on which the passenger is seated.

The first foot blowing member 72 is a hole forming member that forms a center foot blowing hole 720 that blows air-conditioned air from the center side of the vehicle 1 in the width direction DR3 toward the lower side of the seat cushion Scd on the right side on which the driver sits. ..

The second foot blowing member 73 is a hole forming member that forms a side foot blowing hole 730 that blows air-conditioning air from the right side of the width direction DR3 of the vehicle 1 toward the lower side of the seat cushion Scd on the right side on which the driver sits.

The third foot blowout member 74 is a hole forming member that forms a center foot blowout hole 740 that blows air-conditioned air from the center side of the vehicle 1 in the width direction DR3 toward the lower side of the left seat cushion Scp on which the passenger sits. ..

The fourth foot blowout member 75 is a hole forming member that forms a side foot blowout hole 750 that blows air-conditioning air from the left side of the vehicle 1 in the width direction DR3 toward the lower side of the left seat cushion SCP on which the passenger sits.

Each foot blowing member 72 to 75 is fixed to the instrument panel IP by being fitted into an opening formed on the lower surface of the instrument panel IP.

Each foot outlet hole 720, 730, 740, 750 is open to the instrument panel IP. Each foot outlet hole 720, 730, 740, 750 has a flat hole shape. Specifically, each foot outlet hole 720, 730, 740, 750 is composed of an elongated hole-shaped outlet hole extending in the front-rear direction DR2 of the vehicle 1. In each of the foot outlet holes 720, 730, 740, and 750, the dimension of the width direction DR3 when viewed from the air ejection direction is smaller than the dimension of the front-rear direction DR2.

Returning to FIG. 2, the upper and lower partition plates 121 extend to the vicinity of the rear wall portion on the rear side of the vehicle of the air conditioning case 12, and also play a role of partitioning the first mixing space 126 and the second mixing space 127. An upper and lower communication port 26 is formed at the rear end of the upper and lower partition plates 121 on the rear side of the vehicle. The first mixing space 126 and the second mixing space 127 communicate with each other through the upper and lower communication ports 26. An opening / closing door 27 is arranged at the upper / lower communication port 26. The opening / closing door 27 is connected to an electric actuator (not shown), and the electric actuator is configured to open / close the upper / lower communication port 26. The opening / closing door 27 is set at a position where the upper / lower communication port 26 is closed in the inside / outside air two-layer mode, and is set at a position where the upper / lower communication port 26 is opened when the mode is other than the inside / outside air two-layer mode.

Next, the outline of the control system of the air conditioning unit 10 will be described. The air conditioning unit 10 is configured to be automatically controlled by a control device (not shown). The control device is composed of a processor, a microcomputer including a memory, and the like. When the start switch of the vehicle 1 is turned on, power is supplied to the control device from the in-vehicle battery.

The control device controls various devices arranged in the blower unit and the air conditioning unit 10 according to a preset program. Then, a sensor signal from the sensor group, an operation signal from the operation panel for air conditioning installed on the instrument panel, and the like are input to the control device. The operation panel is provided with a temperature setting switch for setting a set temperature in the room, a blowout mode setting switch, an inside / outside air mode setting switch, an air conditioning mode setting switch, and the like.

Various devices arranged in the air conditioning unit 10 are connected to the control device. For example, a first air mix door 181 and a second air mix door 182, a defroster door 21, a face door 23, a foot door 25, an opening / closing door 27, and the like are connected to the control device. The control device controls the air conditioning unit 10 to an appropriate state by controlling various devices.

Next, the operation of the vehicle air conditioner will be described with reference to FIG. When the blowout mode is set to the face mode by the blowout mode setting switch on the operation panel, the position of the face door 23 is controlled by the control device to the open position for opening the face opening 22. As a result, the air-conditioned air temperature-controlled by the air-conditioning unit 10 is blown out from the face blowing portion 60 toward the upper body of the occupant as shown by the arrow F1 in FIG.

Further, when the blowout mode is set to the foot mode by the blowout mode setting switch on the operation panel, the position of the foot door 25 is controlled to the open position where the foot opening 24 is opened by the control device. As a result, the air-conditioned air temperature-controlled by the air-conditioning unit 10 is blown out from the foot blowing portion 70 toward the feet of the occupant, as shown by the arrow F2 in FIG.

Further, when the blowout mode is set to the defroster mode by the blowout mode setting switch on the operation panel, the position of the defroster door 21 is controlled to the open position for opening the defroster opening 20 by the control device. As a result, the air-conditioned air temperature-controlled by the air-conditioning unit 10 is blown out from the defroster blowing portion 50 toward the inside of the windshield W as shown by the arrow F3 in FIG.

The defroster blowing portion 50 of the present embodiment is provided with a diffusion suppressing portion 53 with respect to the hole peripheral portion 521 of the defroster blowing hole 520. The diffusion suppression unit 53 suppresses the diffusion of the airflow blown from the defroster outlet hole 520 toward the inside of the windshield W. As a result, the reach of the airflow blown from the defroster blowout hole 520 to the windshield W becomes longer.

Here, FIGS. 6 and 7 show a defroster outlet CE as a comparative example of the defroster outlet 50 of the present embodiment. The defroster blowing portion CE of the comparative example is provided in that a plurality of fine holes Hs constituting the diffusion suppressing portion D surround the defroster blowing holes Hb in a satellite manner at equal intervals. It is different from part 50. Other configurations of the defroster outlet CE of the comparative example are the same as those of the defroster outlet 50 of the present embodiment.

In the defroster blowout portion CE of the comparative example, fine holes Hs are formed in the entire peripheral portion of the hole peripheral portion of the defroster blowout hole Hb. That is, the diffusion suppressing portion D is also provided on the long edge portion where the distance from the windshield W is small. Therefore, in the defroster blowing portion CE of the comparative example, the dimension Lce of the front-rear direction DR2 is larger than the dimension L of the front-rear direction DR2 of the defroster blowing portion 50 of the present embodiment. As a result, the defroster blowing portion CE of the comparative example has a larger physique than the defroster blowing portion 50 of the present embodiment.

Further, in the defroster blowing portion CE of the comparative example, the diffusion suppressing portion D is provided on the long edge portion where the distance from the windshield W is small. In such a structure, the jet flow from the diffusion suppressing portion D collides with the inner surface of the windshield W to generate a vortex, and the vortex easily disturbs the air flow blown out from the defroster outlet hole Hb. Such turbulence of the airflow is not preferable because it causes a short reach of the airflow. Further, when the fine holes Hs are formed in the entire peripheral portion of the defroster outlet hole Hb, the diffusion suppressing portion D itself becomes a ventilation resistance, and the air volume decreases due to an increase in pressure loss.

On the other hand, in the defroster blowing portion 50 of the present embodiment, the diffusion suppressing portion 53 is provided only on the second long edge portion 523 of the hole peripheral edge portion 521. According to this, the diffusion suppression unit 53 suppresses the diffusion of the airflow blown from the defroster outlet hole 520 to the inside of the windshield W. Specifically, as shown in FIG. 8, most of the airflow flowing through the blowout channel 510 inside the defroster duct 51 is blown out from the defroster blowout hole 520 to the inside of the windshield W. At this time, a part of the air flow flowing through the blowout flow path 510 flows into the plurality of fine flow paths 532 and is blown out as a jet from the plurality of fine holes 531. The jets blown out from the plurality of fine holes 531 function as an air curtain that suppresses the diffusion of the airflow, so that the diffusion of the airflow blown out from the defroster blowout holes 520 to the inside of the windshield W is suppressed. Since the windshield W exists as a barrier near the inner surface of the windshield W, it is difficult for the airflow to diffuse.

As described above, according to the defroster blowing portion 50 of the present embodiment, it is difficult for the air volume to decrease and the physique to become large due to the above-mentioned increase in pressure loss, and it is possible to suppress the diffusion of the air flow in the direction away from the windshield W. As a result, it is possible to sufficiently prevent the windshield W from fogging due to the air flow from the defroster outlet hole 520.

In the defroster blowing portion 50 of the present embodiment described above, the airflow blown out to the blowing target is less likely to be diffused by the diffusion suppressing portion 53 provided at the hole peripheral portion 521 of the defroster blowing hole 520. Therefore, the reach of the airflow blown from the defroster blowing hole 520 to the blowing target can be lengthened.

In particular, the diffusion suppressing portion 53 is provided only on the second long edge portion 523 of the pair of long edge portions 522, 523 and the pair of short edge portions 524 and 525 constituting the hole peripheral edge portion 521. Therefore, the physique of the defroster blowing portion 50 can be made smaller than that in the case where the diffusion suppressing portion 53 is provided so as to surround the defroster blowing holes 520 in a satellite shape at equal intervals.

Specifically, the diffusion suppression unit 53 is composed of a plurality of fine holes 531. According to this, the jets blown out from the plurality of fine holes 531 function as an air curtain that suppresses the diffusion of the airflow, so that the diffusion of the airflow blown out to the blown target is suppressed. As a result, the reach of the airflow blown from the defroster blowout hole 520 to the blowout target can be lengthened.

Further, the diffusion suppressing portion 53 is configured to include a partition portion 533 that forms a plurality of fine flow paths 532 that guide a part of the air flow flowing through the blowout flow path 510 to the plurality of fine holes 531. According to this, the outlet flow path 510 and the plurality of fine flow paths 532 are separated by the partition portion 533 inside the defroster duct 51. As a result, the airflow flowing through the plurality of microchannels 532 can be blown out as a jet from the plurality of microholes 531.

Here, when the airflow is blown from the defroster outlet hole 520 along the inner surface of the windshield W, the windshield W exists as a barrier near the inner surface of the windshield W, so that the airflow is unlikely to diffuse. Therefore, it is not necessary to provide the diffusion suppressing portion 53 near the inner surface of the windshield W.

Nevertheless, when the diffusion suppressing portion 53 is provided on the first long edge portion 522 having a small distance from the windshield W, the diffusion suppressing portion 53 itself becomes a ventilation resistance, and the air volume decreases due to an increase in pressure loss. The decrease in air volume can be eliminated by expanding the opening area of the defroster outlet hole 520, but in this case, there is a trade-off that the physique of the defroster outlet portion 50 becomes large.

On the other hand, in the present embodiment, the diffusion suppressing portion 53 is provided on the second long edge portion 523, which has a large distance from the windshield W. Therefore, it is difficult for the air volume to decrease due to the increase in pressure loss and the physique of the defroster blowing portion 50 to become large, and it is possible to prevent the air flow from diffusing in the direction away from the windshield W. As a result, fogging of the windshield W can be sufficiently suppressed by the air flow from the defroster outlet hole 520.

(First modification of the first embodiment)
In the first embodiment, a plurality of fine holes 531 of the diffusion suppressing portion 53 are made of round holes, but the present invention is not limited to this. The plurality of fine holes 531 may be formed in a hole shape other than a round hole. For example, as shown in FIG. 9, the plurality of fine holes 531 may be formed in a substantially square hole shape. This also applies to the second embodiment.

(Second modification of the first embodiment)
In the first embodiment, a plurality of microholes 531 formed by through holes penetrating the front and back surfaces of the hole peripheral portion 521 have been exemplified, but the present invention is not limited thereto. As shown in FIG. 10, the plurality of microholes 531 may be composed of a plurality of holes formed by partitioning an elongated elongated hole with a plurality of partition plates 534.

(Other Modified Examples of First Embodiment)
In the first embodiment, the diffusion suppressing portion 53 provided in the second long edge portion 523 is illustrated, but the present invention is not limited to this. If the diffusion of the airflow from the defroster outlet hole 520 can be suppressed, the diffusion suppression unit 53 may be used as one of the first long edge portion 522 and the pair of short edge portions 524 and 525 instead of the second long edge portion 523. It may be provided. This also applies to the subsequent embodiments.

In the first embodiment, a diffusion suppressing portion 53 is added to the defroster blowing portion 50 that blows air toward the windshield W, but the present invention is not limited to this. For example, when a side defroster blowing portion for blowing air toward the side glass is provided for the vehicle, a diffusion suppressing portion may be added to the side defroster blowing portion.

In the first embodiment, the face blowing portion 60 is exemplified by the face duct 61, the first face blowing member 62, the second face blowing member 63, the third face blowing member 64, and the fourth face blowing member 65. However, it is not limited to this. The face blowing portion 60 may be composed of, for example, a face duct 61, a first face blowing member 62, and a third face blowing member 64. The face outlet holes 620, 630, 640, and 650 are illustrated to have a flat hole shape, but the present invention is not limited to this, and may be, for example, a substantially circular shape or a substantially square shape. This also applies to the following second, fifth, sixth, and seventh.

In the first embodiment, the first foot blowing member 72, the second foot blowing member 73, the third foot blowing member 74, and the fourth foot blowing member 75 are fixed to the instrument panel IP. Not limited to. The foot blowing members 72 to 75 do not have to be fixed to the instrument panel IP. This also applies to the subsequent embodiments.

In the first embodiment, the foot blowing portion 70 is exemplified by a foot duct 71, a first foot blowing member 72, a second foot blowing member 73, a third foot blowing member 74, and a fourth foot blowing member 75. However, it is not limited to this. The foot blowing portion 70 may be composed of, for example, a foot duct 71, a first foot blowing member 72, and a third foot blowing member 74. The foot outlet holes 720, 730, 740, and 750 are illustrated to have a flat hole shape, but the present invention is not limited to this, and may be, for example, a substantially circular shape or a substantially square shape. This also applies to the following second, third, fourth, and seventh embodiments.

(Second Embodiment)
Next, the second embodiment will be described with reference to FIG. In this embodiment, the parts different from the first embodiment will be mainly described.

In the blowout flow path 510 inside the defroster duct 51, the flow velocity of the airflow near the wall surface tends to be smaller than that at a position away from the wall surface due to wall surface loss. Therefore, if a plurality of fine flow paths 532 are formed near the inner wall surface of the defroster duct 51, the flow rate of air flowing through the fine flow paths 532 will not be sufficient.

Therefore, as shown in FIG. 11, the diffusion suppression unit 53 of the present embodiment has a constricted flow shape in which the plurality of fine flow paths 532 have a flow path area that decreases from the upstream side to the downstream side of the air flow. ..

Specifically, the diffusion suppressing portion 53 is configured such that the distance L1 between the partition portion 533 on the upstream side of the air flow and the inner wall surface of the defroster duct 51 is larger than the distance L2 on the downstream side of the air flow. Has been done.

Other configurations are the same as those in the first embodiment. The defroster blowing portion 50 of the present embodiment has the same configuration as that of the first embodiment, and the effect produced from the configuration can be obtained in the same manner as that of the first embodiment.

In particular, the defroster blowing portion 50 of the present embodiment has a plurality of fine flow paths 532 of the diffusion suppressing portion 53 having a contracted flow shape. According to this, it is possible to increase the flow velocity of the air flow while ensuring the flow rate of the air flow flowing through the plurality of fine flow paths 532. That is, according to the defroster blowing portion 50 of the present embodiment, a high-speed jet can be blown out from the plurality of fine holes 531. This is particularly effective in increasing the reach of the airflow blown out to the blowing target.

(Third Embodiment)
Next, the third embodiment will be described with reference to FIGS. 12 to 14. In this embodiment, the parts different from the first embodiment will be mainly described.

In the present embodiment, the first face blowing member 62 and the second face blowing member 63 of the face blowing portion 60 have a structure in which the diffusion of the air flow is suppressed. The face blowing portion 60 has a structure in which not only the first face blowing member 62 and the second face blowing member 63 but also the third face blowing member 64 and the fourth face blowing member 65 suppress the diffusion of airflow. You may be.

As shown in FIG. 12, the first face blowing member 62 and the second face blowing member 63 are set at a portion of the instrument panel IP located in front of the seat S on the right side on which the driver sits. The first face blowing member 62 is set on the center side of the vehicle 1 in the width direction DR3. Further, the second face blowing member 63 is set on the right side of the width direction DR3 of the vehicle 1 with respect to the first face blowing member 62.

As shown in FIG. 13, the center face outlet hole 620 is composed of an elongated hole-shaped outlet hole extending in the vertical direction DR1 of the vehicle 1. In the center face outlet hole 620, the dimension of the vertical DR1 when viewed from the air outlet direction is larger than the dimension of the width direction DR3.

The first face blowing member 62 has a hole peripheral edge portion 621 surrounding the center face blowing hole 620. The hole peripheral edge portion 621 is connected to both ends of the pair of long edge portions 622 and 623 extending opposite to each other and the pair of long edge portions 622 and 623, and is larger than the distance between the pair of long edge portions 622 and 623. It is configured to include a pair of short edge portions 624 and 625 facing each other at intervals.

The first face blowing member 62 is installed in the instrument panel IP so that a pair of long edge portions 622 and 623 of the center face blowing hole 620 extend along the vertical DR1 of the vehicle 1.

The hole peripheral portion 621 of the center face blowout hole 620 is provided with a diffusion suppression portion 66 that suppresses the diffusion of the airflow blown out from the center face blowout hole 620 above the seat cushion Scd on the right side on which the driver sits. Specifically, the diffusion suppressing portion 66 is provided on the first long edge portion 622 of the pair of long edge portions 622 and 623, which has a small distance from the seat cushion Scd in the width direction DR3. That is, the diffusion suppressing portion 66 is provided on the second long edge portion 623 and the pair of short edge portions 624, 625, which have a large distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 622 and 623. Absent. The diffusion suppression unit 66 of the present embodiment is configured in the same manner as the diffusion suppression unit 53 described in the first and second embodiments. That is, the diffusion suppression unit 66 is configured to include a plurality of fine holes 661, a partition portion for forming a plurality of fine flow paths that guide a part of the airflow flowing through the blowout flow path 610 to the plurality of fine holes 661, and the like. ..

The second face blowing member 63 has a hole peripheral edge portion 631 surrounding the side face blowing hole 630. The hole peripheral edge 631 is connected to both ends of the pair of long edge portions 632 and 633 extending opposite to each other and the pair of long edge portions 632 and 633, and is larger than the distance between the pair of long edge portions 632 and 633. It is configured to include a pair of short edge portions 634 and 635 facing each other at intervals.

The second face blowing member 63 is installed on the instrument panel IP so that a pair of long edge portions 632 and 633 of the side face blowing holes 630 extend along the vertical DR1 of the vehicle 1.

The hole peripheral portion 631 of the side face blowout hole 630 is provided with a diffusion suppression portion 67 that suppresses the diffusion of the airflow blown out from the side face blowout hole 630 above the seat cushion Scd on the right side on which the driver sits. Specifically, the diffusion suppressing portion 67 is provided on the first long edge portion 632 of the pair of long edge portions 632 and 633, which has a small distance from the seat cushion Scd in the width direction DR3. That is, the diffusion suppressing portion 67 is provided on the second long edge portion 633 and the pair of short edge portions 634, 635, which have a large distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 632 and 633. Absent. The diffusion suppression unit 67 of the present embodiment is configured in the same manner as the diffusion suppression unit 53 described in the first and second embodiments. That is, the diffusion suppression unit 67 is configured to include a plurality of fine holes 671, a partition portion for forming a plurality of fine flow paths that guide a part of the airflow flowing through the blowout flow path 610 to the plurality of fine holes 671. ..

The face blowing portion 60 of the present embodiment is provided with diffusion suppressing portions 66, 67 with respect to the hole peripheral edges 621 and 631 of the first face blowing member 62 and the second face blowing member 63. The diffusion suppression portions 66 and 67 suppress the diffusion of the airflow blown from the center face outlet hole 620 and the side face outlet hole 630 toward the driver's upper body. As a result, the reach of the airflow blown from the center face blowout hole 620 and the side face blowout hole 630 to the driver's upper body can be increased.

Specifically, in the first face blowing member 62 and the second face blowing member 63 of the present embodiment, the diffusion suppressing portions 66 and 67 are provided only on the first long edge portions 622 and 632 of the hole peripheral portions 621 and 631. It is provided. Therefore, as shown in FIG. 14, the diffusion suppressing portions 66 and 67 suppress the diffusion of the airflow blown from the side close to the seat cushion Scd in the center face blowing hole 620 and the side face blowing hole 630. As a result, a comfortable air flow can easily reach the driver seated on the seat cushion Scd.

On the other hand, the airflow blown from the side far from the seat cushion Scd in the center face outlet hole 620 and the side face outlet hole 630 diffuses around the driver seated in the seat cushion Scd, so that the surroundings of the driver are comfortable. Can be in a state.

According to the face blowout portion 60 configured in this way, the airflow from the center face blowout hole 620 and the side face blowout hole 630 can provide a comfortable air-conditioning feeling to the occupants and also make the passenger compartment comfortable. it can.

In the face blowing portion 60 of the present embodiment described above, the diffusion suppressing portions 66 and 67 are provided only in the first long edge portions 622 and 632 of the center face blowing hole 620 and the side face blowing hole 630.

As a result, the diffusion of the airflow blown out from the side close to the seat cushion Scd in the center face blowout hole 620 and the side face blowout hole 630 is suppressed, so that a comfortable airflow reaches the driver seated in the seat cushion Scd. It will be easier. Further, the physique of the face blowing portion 60 can be reduced as compared with the case where the diffusion suppressing portions 66 and 67 are provided so as to surround the center face blowing holes 620 and the side face blowing holes 630 at equal intervals in a satellite shape. ..

(Modified example of the third embodiment)
In the third embodiment, a plurality of fine holes 661 and 671 of the diffusion suppressing portions 66 and 67 are exemplified, but the present invention is not limited to this. The plurality of fine holes 661 and 671 may be formed in a hole shape other than a round hole. For example, the plurality of fine holes 661 and 671 may be formed in a substantially square hole shape. This also applies to the fourth embodiment.

In the third embodiment, a plurality of microholes 661 and 671 are illustrated as having through holes penetrating the front and back surfaces of the hole peripheral portions 621 and 631, but the present invention is not limited to this. The plurality of fine holes 661 and 671 may be composed of a plurality of holes formed by partitioning an elongated elongated hole with a plurality of partition plates.

(Fourth Embodiment)
Next, the fourth embodiment will be described with reference to FIGS. 15 and 16. In the present embodiment, the parts different from the third embodiment will be mainly described.

As shown in FIG. 15, the first face blowing member 62 has a second length of a pair of long edge portions 622 and 623 forming the center face blowing hole 620, which has a large distance from the seat cushion Scd in the width direction DR3. A diffusion suppressing portion 66 is provided with respect to the edge portion 623. That is, the diffusion suppressing portion 66 is provided on the first long edge portion 622 and the pair of short edge portions 624, 625, which are smaller in distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 622, 623. Absent. The diffusion suppression unit 66 of the present embodiment is configured in the same manner as that of the third embodiment.

The second face blowing member 63 is diffused with respect to the second long edge portion 633 having a large distance from the seat cushion Scd in the width direction DR3 among the pair of long edge portions 632 and 633 forming the side face blowing hole 630. A suppression unit 67 is provided. That is, the diffusion suppressing portion 67 is provided on the first long edge portion 632 and the pair of short edge portions 634, 635, which are smaller in distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 632 and 633. Absent. The diffusion suppression unit 67 of the present embodiment is configured in the same manner as that of the third embodiment.

The face blowing portion 60 of the present embodiment is provided with diffusion suppressing portions 66, 67 with respect to the hole peripheral edges 621 and 631 of the first face blowing member 62 and the second face blowing member 63. The diffusion suppression portions 66 and 67 suppress the diffusion of the airflow blown from the center face outlet hole 620 and the side face outlet hole 630 toward the driver's upper body. As a result, the reach of the airflow blown from the center face blowout hole 620 and the side face blowout hole 630 to the driver's upper body can be increased.

Specifically, in the first face blowing member 62 and the second face blowing member 63 of the present embodiment, the diffusion suppressing portions 66 and 67 are provided only in the second long edge portions 623 and 633 of the hole peripheral portions 621 and 631. It is provided.

Therefore, as shown in FIG. 16, the airflow blown from the side far from the seat cushion Scd in the center face blowout hole 620 and the side face blowout hole 630 diffuses around the driver seated on the seat cushion Sc. Therefore, the surroundings of the driver can be made comfortable.

On the other hand, the diffusion suppressing portions 66 and 67 suppress the diffusion of the airflow blown from the side close to the seat cushion Scd in the center face blowing hole 620 and the side face blowing hole 630. This makes it difficult for the comfortable airflow around the driver seated on the seat cushion Scd to diffuse to the outside.

As described above, in the configuration in which the diffusion suppressing portions 66 and 67 are provided in the second long edge portions 623 and 633 having a large distance from the seat cushion Scd, the airflow from the center face outlet hole 620 and the side face outlet hole 630 is supplied. You can concentrate around the driver. This is particularly effective in providing comfortable air conditioning with high immediate effect.

In the face blowing portion 60 of the present embodiment described above, the diffusion suppressing portions 66 and 67 are provided only in the second long edge portions 623 and 633 of the center face blowing hole 620 and the side face blowing hole 630.

As a result, the diffusion of the airflow blown from the distant side to the seat cushion Scd in the center face blowout hole 620 and the side face blowout hole 630 is suppressed, so that a comfortable airflow reaches the driver seated in the seat cushion Scd. It will be easier. Further, the physique of the face blowing portion 60 can be reduced as compared with the case where the diffusion suppressing portions 66 and 67 are provided so as to surround the center face blowing holes 620 and the side face blowing holes 630 at equal intervals in a satellite shape. ..

(Fifth Embodiment)
Next, the fifth embodiment will be described with reference to FIGS. 17 to 19. In this embodiment, the parts different from the first embodiment will be mainly described.

In the present embodiment, the first foot blowing member 72 and the second foot blowing member 73 of the foot blowing portion 70 have a structure in which the diffusion of the air flow is suppressed. The foot blowing portion 70 has a structure in which not only the first foot blowing member 72 and the second foot blowing member 73 but also the third foot blowing member 74 and the fourth foot blowing member 75 suppress the diffusion of airflow. You may be.

As shown in FIG. 17, the first foot blowing member 72 and the second foot blowing member 73 are set at a portion of the instrument panel IP located in front of the seat S on the right side on which the driver sits. The first foot blowing member 72 is set on the center side of the vehicle 1 in the width direction DR3. Further, the second foot blowing member 73 is set on the right side of the vehicle 1 in the width direction DR3 with respect to the first foot blowing member 72.

As shown in FIG. 18, the center foot outlet hole 720 is composed of an elongated hole-shaped outlet hole extending in the front-rear direction DR2 of the vehicle 1. In the center foot outlet hole 720, the dimension of the front-rear direction DR2 when viewed from the air outlet direction is larger than the dimension of the width direction DR3.

The first foot blowing member 72 has a hole peripheral edge portion 721 surrounding the center foot blowing hole 720. The hole peripheral edge portion 721 is connected to both ends of the pair of long edge portions 722 and 723 extending opposite to each other and the pair of long edge portions 722 and 723, and is larger than the distance between the pair of long edge portions 722 and 723. It is configured to include a pair of short edge portions 724 and 725 facing each other at intervals.

The first foot blowout member 72 is installed on the instrument panel IP so that a pair of long edge portions 722 and 723 of the center foot blowout hole 720 extend along the front-rear direction DR2 of the vehicle 1.

The hole peripheral portion 721 of the center foot blowout hole 720 is provided with a diffusion suppression portion 76 that suppresses the diffusion of the airflow blown out from the center foot blowout hole 720 below the seat cushion Scd on the right side on which the driver sits. Specifically, the diffusion suppressing portion 76 is provided on the first long edge portion 722, which has a small distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 722 and 723. That is, the diffusion suppressing portion 76 is provided on the second long edge portion 723 and the pair of short edge portions 724, 725, which have a large distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 722 and 723. Absent. The diffusion suppression unit 76 of the present embodiment is configured in the same manner as the diffusion suppression unit 53 described in the first and second embodiments. That is, the diffusion suppression unit 76 is configured to include a plurality of fine holes 761, a partition portion for forming a plurality of fine flow paths that guide a part of the airflow flowing through the blowout flow path 710 to the plurality of fine holes 761 and the like. ..

The second foot blowout member 73 has a hole peripheral edge portion 731 that surrounds the side foot blowout hole 730. The hole peripheral edge portion 731 is connected to both ends of the pair of long edge portions 732 and 733 extending opposite to each other and the pair of long edge portions 732 and 733, and is larger than the distance between the pair of long edge portions 732 and 733. It is configured to include a pair of short edge portions 734, 735 facing each other at intervals.

The second foot blowout member 73 is installed on the instrument panel IP so that a pair of long edge portions 732 and 733 of the side foot blowout holes 730 extend along the front-rear direction DR2 of the vehicle 1.

The hole peripheral portion 731 of the side foot blowout hole 730 is provided with a diffusion suppression portion 77 that suppresses the diffusion of the airflow blown out from the side foot blowout hole 730 below the seat cushion Scd on the right side on which the driver sits. Specifically, the diffusion suppressing portion 77 is provided on the first long edge portion 732 of the pair of long edge portions 732 and 733, which has a small distance from the seat cushion Scd in the width direction DR3. That is, the diffusion suppressing portion 77 is provided on the second long edge portion 733 and the pair of short edge portions 734, 735, which have a large distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 732 and 733. Absent. The diffusion suppression unit 77 of the present embodiment is configured in the same manner as the diffusion suppression unit 53 described in the first and second embodiments. That is, the diffusion suppression unit 77 is configured to include a plurality of fine holes 771, a partition portion for forming a plurality of fine flow paths that guide a part of the airflow flowing through the blowout flow path 710 to the plurality of fine holes 771. ..

The foot blowing portion 70 of the present embodiment is provided with diffusion suppressing portions 76, 77 with respect to the hole peripheral edges 721 and 731 of the first foot blowing member 72 and the second foot blowing member 73. The diffusion suppressing portions 76 and 77 suppress the diffusion of the airflow blown from the center foot outlet hole 720 and the side foot outlet hole 730 toward the driver's feet. As a result, the reach of the airflow blown from the center foot blowout hole 720 and the side foot blowout hole 730 to the driver's feet can be increased.

Specifically, in the first foot blowing member 72 and the second foot blowing member 73 of the present embodiment, the diffusion suppressing portions 76 and 77 are provided only on the first long edge portions 722 and 732 of the hole peripheral portions 721 and 731. It is provided. Therefore, as shown in FIG. 19, the diffusion suppressing portions 76 and 77 suppress the diffusion of the airflow blown from the side close to the seat cushion Scd in the center foot blowing hole 720 and the side foot blowing hole 730. As a result, a comfortable air flow can easily reach the driver seated on the seat cushion Scd.

On the other hand, the airflow blown from the side far from the seat cushion Scd in the center foot blowout hole 720 and the side foot blowout hole 730 diffuses around the driver seated in the seat cushion Scd, so that the surroundings of the driver are comfortable. Can be in a state.

According to the foot blowout portion 70 configured in this way, the airflow from the center foot blowout hole 720 and the side foot blowout hole 730 can provide a comfortable air-conditioning feeling to the occupants and also make the passenger compartment comfortable. it can.

In the foot blowing portion 70 of the present embodiment described above, the diffusion suppressing portions 76 and 77 are provided only in the first long edge portions 722 and 732 of the center foot blowing hole 720 and the side foot blowing hole 730.

As a result, the diffusion of the airflow blown from the side close to the seat cushion Scd in the center foot blowout hole 720 and the side foot blowout hole 730 is suppressed, so that a comfortable airflow reaches the driver seated in the seat cushion Scd. It will be easier. Further, as compared with the case where the diffusion suppression portions 76 and 77 are provided so as to surround the center foot outlet holes 720 and the side foot outlet holes 730 at equal intervals in a satellite shape, the physique of the foot outlet 70 can be reduced. ..

(Modified example of the fifth embodiment)
In the fifth embodiment, a plurality of fine holes 761 and 771 of the diffusion suppressing portions 76 and 77 are illustrated as being composed of round holes, but the present invention is not limited thereto. The plurality of fine holes 761 and 771 may be formed in a hole shape other than a round hole. For example, the plurality of microholes 761 and 771 may be formed in a substantially square hole shape. This also applies to the sixth embodiment.

In the fifth embodiment, a plurality of microholes 761 and 771 are exemplified, but are not limited to those, in which a plurality of fine holes 761 and 771 are composed of through holes penetrating the front and back surfaces of the hole peripheral portions 721 and 731. The plurality of fine holes 761 and 771 may be composed of a plurality of holes formed by partitioning an elongated elongated hole with a plurality of partition plates.

(Sixth Embodiment)
Next, the sixth embodiment will be described with reference to FIGS. 20 and 21. In the present embodiment, the parts different from the fifth embodiment will be mainly described.

As shown in FIG. 20, the first foot blowing member 72 has a second length of a pair of long edge portions 722 and 723 forming the center foot blowing hole 720, which has a large distance from the seat cushion Scd in the width direction DR3. A diffusion suppressing portion 76 is provided with respect to the edge portion 723. That is, the diffusion suppressing portion 76 is provided on the first long edge portion 722 and the pair of short edge portions 724 and 725, which are smaller in distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 722 and 723. Absent. The diffusion suppression unit 76 of the present embodiment is configured in the same manner as the fifth embodiment.

Of the pair of long edge portions 732 and 733 forming the side foot blowout hole 730, the second foot blowout member 73 diffuses with respect to the second long edge portion 733 having a large distance from the seat cushion Scd in the width direction DR3. A suppression unit 77 is provided. That is, the diffusion suppressing portion 77 is provided on the first long edge portion 732 and the pair of short edge portions 734, 735, which are smaller in distance from the seat cushion Scd in the width direction DR3, among the pair of long edge portions 732 and 733. Absent. The diffusion suppression unit 77 of the present embodiment is configured in the same manner as the fifth embodiment.

The foot blowing portion 70 of the present embodiment is provided with diffusion suppressing portions 76, 77 with respect to the hole peripheral edges 721 and 731 of the first foot blowing member 72 and the second foot blowing member 73. The diffusion suppressing portions 76 and 77 suppress the diffusion of the airflow blown from the center foot outlet hole 720 and the side foot outlet hole 730 toward the driver's feet. As a result, the reach of the airflow blown from the center foot blowout hole 720 and the side foot blowout hole 730 to the driver's upper body can be increased.

Specifically, in the first foot blowing member 72 and the second foot blowing member 73 of the present embodiment, the diffusion suppressing portions 76 and 77 are provided only in the second long edge portions 723 and 733 of the hole peripheral portions 721 and 731. It is provided.

Therefore, as shown in FIG. 21, the airflow blown from the side far from the seat cushion Scd in the center foot blowout hole 720 and the side foot blowout hole 730 diffuses around the driver seated on the seat cushion Sc. Therefore, the surroundings of the driver can be made comfortable.

On the other hand, the diffusion suppressing portions 76 and 77 suppress the diffusion of the airflow blown from the side close to the seat cushion Scd in the center foot blowing hole 720 and the side foot blowing hole 730. This makes it difficult for the comfortable airflow around the driver seated on the seat cushion Scd to diffuse to the outside.

As described above, in the configuration in which the diffusion suppressing portions 76 and 77 are provided in the second long edge portions 723 and 733 having a large distance from the seat cushion Scd, the airflow from the center foot outlet hole 720 and the side foot outlet hole 730 is supplied. You can concentrate around the driver. This is particularly effective in providing comfortable air conditioning with high immediate effect.

In the foot blowing portion 70 of the present embodiment described above, the diffusion suppressing portions 76 and 77 are provided only in the second long edge portions 723 and 733 of the center foot blowing hole 720 and the side foot blowing hole 730.

As a result, the diffusion of the airflow blown from the far side to the seat cushion Scd in the center foot blowout hole 720 and the side foot blowout hole 730 is suppressed, so that a comfortable airflow reaches the driver seated in the seat cushion Scd. It will be easier. Further, as compared with the case where the diffusion suppression portions 76 and 77 are provided so as to surround the center foot outlet holes 720 and the side foot outlet holes 730 at equal intervals in a satellite shape, the physique of the foot outlet 70 can be reduced. ..

(7th Embodiment)
Next, the seventh embodiment will be described with reference to FIGS. 22 to 25. In this embodiment, the parts different from the first embodiment will be mainly described.

As shown in FIGS. 22 and 23, the air conditioning unit 10 of the present embodiment is provided with a cold air blowing portion 80 that blows cold air toward the second mixing space 127, which is a blowing target, inside the air conditioning case 12. The cold air blowing portion 80 has a hole forming member 82 forming a cold air blowing hole 820 for blowing cold air toward the second mixing space 127 and a cold air duct 81 constituting the lower bypass passage 123B in the air conditioning case 12. ..

The cold air duct 81 is a duct that forms a lower bypass passage 123B through which the cold air blown toward the second mixing space 127 passes. The end of the cold air duct 81 on the downstream side of the air flow is connected to the hole forming member 82. In this embodiment, the lower bypass passage 123B constitutes the outlet flow path. Further, the second mixed space 127 constitutes a confluence space where cold air and hot air merge.

The hole forming member 82 is a member that forms a cold air blowing hole 820 that blows air toward the second mixing space 127. The hole forming member 82 is connected to the downstream side of the air flow of the cold air duct 81. The hole forming member 82 is integrally formed with the air conditioning case 12.

The cold air blowing hole 820 has a flat hole shape. Specifically, as shown in FIG. 24, the cold air blowing hole 820 is composed of an elongated hole-shaped blowing hole extending in the width direction DR3 of the vehicle 1. The size of the width direction DR3 of the cold air blowing hole 820 when viewed from the air blowing direction is larger than the size of the front-rear direction DR2.

The hole forming member 82 has a hole peripheral edge portion 821 that surrounds the cold air blowing hole 820. The hole peripheral edge portion 821 is connected to both ends of the pair of long edge portions 822 and 823 extending opposite to each other and the pair of long edge portions 822 and 823, and is larger than the distance between the pair of long edge portions 822 and 823. It is configured to include a pair of short edge portions 824 and 825 facing each other at intervals. A pair of long edge portions 822 and 823 of the cold air blowing holes 820 extend along the width direction DR3 of the vehicle 1.

The hole peripheral edge portion 821 is provided with a diffusion suppressing portion 83 that suppresses the diffusion of the airflow blown from the cold air blowing hole 820 into the second mixing space 127.

Specifically, the diffusion suppressing portion 83 is provided on the first long edge portion 822 of the pair of long edge portions 822 and 823, which has a small distance from the heater core 16 in the front-rear direction DR2. That is, the diffusion suppressing portion 83 is not provided in the second long edge portion 823 and the pair of short edge portions 824, 825 having a large distance from the heater core 16 in the front-rear direction DR2 among the pair of long edge portions 822 and 823. ..

As shown in FIGS. 23 and 24, the diffusion suppression unit 83 is composed of a plurality of fine holes 831. The plurality of fine holes 831 are for jetting a part of the airflow flowing through the lower bypass passage 123B from the cold air blowing hole 820 and blowing it toward the second mixing space 127. The plurality of fine holes 831 are composed of holes having an opening area smaller than that of the cold air blowing hole 820. The plurality of microholes 831 are formed side by side at equal intervals in the second long edge portion 823. The plurality of fine holes 831 are composed of round holes. The plurality of fine holes 831 are composed of through holes that vertically penetrate the peripheral portion 821 of the holes. The plurality of microholes 831 may be arranged at different intervals.

Subsequently, the flow of air in the cooling mode in the air conditioning unit 10 of the present embodiment will be described with reference to FIG. 25. In this example, how the air flows when the cold air passing through the bypass passages 122B and 123B is blown out from the face opening 22 will be described. In the cooling mode, the air suction mode is set to either the outside air mode or the inside air mode.

As shown in FIG. 25, the air flowing through the first air passage 122 passes through the evaporator 14 and is cooled. Then, the cold air that has passed through the evaporator 14 flows to the face opening 22 after passing through the upper bypass passage 122B and the first mixing space 126 without passing through the heater core 16.

On the other hand, the air flowing through the second air passage 123 passes through the lower bypass passage 123B without passing through the heater core 16. The cold air that has passed through the lower bypass passage 123B is turned upward by the vehicle rear portion of the air conditioning case 12, and then blown out to the second mixing space 127 through the cold air blowing hole 820. The cold air flowing into the second mixing space 127 flows to the face opening 22 after passing through the first mixing space 126.

Here, in the air conditioning unit 10, a part of the cold air that has passed through the lower bypass passage 123B is secondly mixed as a jet that crosses the outlet of the lower warm air passage 123A from the plurality of fine holes 831 constituting the diffusion suppression unit 83. It is blown out into space 127. At this time, the jets blown out from the plurality of fine holes 831 flow in parallel with the cold air blown out to the second mixing space 127 through the cold air blowout holes 820.

As a result, the cold air that has flowed into the second mixing space 127 from the lower bypass passage 123B through the cold air blowing hole 820 flows into the first mixing space 126 without being diffused into the lower warm air passage 123A.

That is, the cold air that has flowed into the second mixing space 127 functions as an air curtain in which the jets blown out from the plurality of fine holes 831 suppress the diffusion of the airflow, so that the cold air does not diffuse into the lower warm air passage 123A. It flows into the mixed space 126.

In the air conditioning unit 10 of the present embodiment described above, the diffusion suppressing unit 83 is provided in the cold air blowing unit 80 arranged inside the air conditioning case 12. According to this, it becomes difficult for the airflow blown out to the blown target by the diffusion suppressing unit 53 to diffuse. Therefore, the reach of the airflow blown from the cold air blowing hole 820 to the blowing target can be lengthened.

In particular, the diffusion suppressing portion 83 is provided only on the first long edge portion 822 of the pair of long edge portions 822 and 823 and the pair of short edge portions 824 and 825 constituting the hole peripheral edge portion 821 of the cold air blowing hole 820. There is. Therefore, the physique of the cold air blowing portion 80 can be made smaller than that in the case where the diffusion suppressing portion 83 is provided so as to surround the cold air blowing holes 820 in a satellite shape at equal intervals.

Specifically, the diffusion suppression unit 83 is composed of a plurality of fine holes 831. According to this, the jets blown out from the plurality of fine holes 831 function as an air curtain that suppresses the diffusion of the airflow, so that the diffusion of the airflow blown out to the blown target is suppressed. That is, the air flow generated by the diffusion suppression unit 53 makes it difficult for the air that has passed through the lower bypass passage 123B to diffuse to the heater core 16 side. As a result, it is possible to prevent the cold air flowing through the lower bypass passage 123B from unintentionally flowing into the heater core 16. As a result, the maximum cooling performance of the air conditioning unit 10 can be improved.

(Modified example of the seventh embodiment)
In the seventh embodiment, a plurality of fine holes 831 of the diffusion suppressing portion 83 are made of round holes, but the present invention is not limited to this. The plurality of fine holes 831 may be formed in a hole shape other than a round hole. For example, the plurality of fine holes 831 may be formed in a substantially square hole shape.

In the seventh embodiment, a plurality of microholes 831 having a through hole penetrating the front and back surfaces of the hole peripheral portion 821 are exemplified, but the present invention is not limited to this. The plurality of fine holes 831 may be composed of a plurality of holes formed by partitioning an elongated elongated hole with a plurality of partition plates.

(Other embodiments)
Although the typical embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and can be variously modified as follows, for example.

In the above-described embodiment, the diffusion suppression unit 53, 66, 67, 76, 77, 83 is exemplified by a plurality of microholes 531, 661, 671, 761, 771, 831, but is not limited thereto. .. The diffusion suppressing portions 53, 66, 67, 76, 77, 83 may be composed of, for example, a plurality of convex portions or concave portions that generate a spiral vortex flow having a vortex axis along the mainstream flow. In this case, the vortex generated by the diffusion suppression units 53, 66, 67, 76, 77, 83 functions as an air curtain that suppresses the diffusion of the airflow that blows out toward the blowout target, so that the airflow that blows out toward the blowout target reaches. It is possible to improve the distance.

In the above-described embodiment, the air-conditioning unit 10 in which the air-blowing portion of the present disclosure can be set to the inside / outside air two-layer mode is illustrated, but the present invention is not limited thereto. The air blowing portion of the present disclosure can also be applied to the air conditioning unit 10 that cannot be set to the inside / outside air two-layer mode. Further, the air blowing portion of the present disclosure can be widely applied to devices other than the air conditioning unit 10.

Needless to say, in the above-described embodiment, the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential and when they are clearly considered to be essential in principle.

In the above-described embodiment, when numerical values such as the number, numerical value, amount, range, etc. of the components of the embodiment are mentioned, when it is clearly stated that it is particularly essential, and in principle, it is clearly limited to a specific number. Except as the case, it is not limited to the specific number.

In the above-described embodiment, when referring to the shape, positional relationship, etc. of a component or the like, the shape, positional relationship, etc., unless otherwise specified or limited in principle to a specific shape, positional relationship, etc. Not limited to, etc.

(Summary)
According to the first aspect shown in part or all of the above-described embodiment, the air blowing portion is directed toward the blowing target with a duct forming a blowing flow path through which the air blown toward the blowing target passes. A hole forming member for forming a flat hole-shaped blowing hole for blowing air is provided. Of the hole forming members, the hole peripheral edges surrounding the blowout holes are connected to both ends of a pair of long edge portions extending opposite to each other and a pair of long edge portions, and are spaced apart from each other. It is configured to include a pair of short edges facing each other. One of the pair of long edge portions and the pair of short edge portions is provided with a diffusion suppressing portion that suppresses the diffusion of the airflow blown from the blowing hole to the blowing target.

According to the second aspect, the diffusion suppression unit has a smaller opening area than the blowout hole, and includes a plurality of fine holes that make a part of the airflow flowing from the blowout flow path to the blowout hole into a jet and blow out toward the blowout target. It is composed of. In this way, if the diffusion suppression unit is composed of a plurality of fine holes, the jets blown out from the plurality of fine holes function as an air curtain that suppresses the diffusion of the airflow, so that the diffusion of the airflow blown out to the blowout target can be achieved. It is suppressed. As a result, the reach of the airflow blown from the blowout hole to the blowout target can be lengthened.

According to the third aspect, the diffusion suppressing portion is configured to include a partition portion that forms a plurality of fine flow paths that guide a part of the air flow flowing through the blowout flow path to the plurality of fine holes. According to this, the blowout flow path and the plurality of fine flow paths are separated by the partition portion inside the duct. As a result, the airflow flowing through the plurality of microchannels can be blown out as a jet from the plurality of microholes.

According to the fourth aspect, the plurality of microchannels have a contracted flow shape in which the channel area decreases from the upstream side to the downstream side of the air flow. In this way, if the plurality of microchannels have a contracted flow shape, the flow velocity of the airflow flowing through the plurality of microchannels becomes high, so that a high-speed jet can be blown out from the plurality of microholes. This is particularly effective in increasing the reach of the airflow blown out to the blowing target.

According to the fifth aspect, the blowout hole is a defroster blowout hole that targets the windshield of the vehicle as a blowout target and opens to an instrument panel adjacent to the windshield to blow out air along the inner surface of the windshield. The hole forming member is installed on the instrument panel so that a pair of long edges of the blowout holes extend along the width direction of the vehicle. The diffusion suppressing portion is provided on the long edge portion of the pair of long edge portions, which has a large distance from the windshield in the front-rear direction of the vehicle.

When the airflow is blown from the defroster outlet along the inner surface of the windshield, the windshield is present as a barrier near the inner surface of the windshield, so that the airflow is unlikely to diffuse. Therefore, it is not necessary to provide a diffusion suppressing portion near the inner surface of the windshield.

Nevertheless, when the diffusion suppressing portion is provided on the long edge portion where the distance from the windshield is small, the diffusion suppressing portion itself becomes a ventilation resistance, and the air volume decreases due to the increase in pressure loss. The decrease in air volume can be eliminated by expanding the opening area of the air outlet, but in this case, there is a trade-off that the physique of the air outlet becomes large.

On the other hand, if the diffusion suppression portion is provided on the long edge portion where the distance from the windshield is large, it is difficult for the air volume to decrease and the physique of the air blowout portion to increase due to the above-mentioned increase in pressure loss. It is possible to prevent the airflow from diffusing in the direction away from the windshield. As a result, fogging of the windshield can be sufficiently suppressed by the air flow from the defroster outlet hole.

According to the sixth aspect, the blowout hole is a face blowout hole that blows air toward the upper part of the seat cushion on which the occupant of the vehicle sits. The hole forming member is installed so that a pair of long edges of the blowout holes extend along the vertical direction of the vehicle. The diffusion suppressing portion is provided on the long edge portion of the pair of long edge portions, which has a large distance from the seat cushion in the width direction of the vehicle.

According to this, the airflow blown from the side close to the seat cushion in the face outlet hole diffuses around the occupant seated on the seat cushion, so that the occupant's surroundings can be made comfortable.

On the other hand, the diffusion suppressing portion suppresses the diffusion of the airflow blown from the side far from the seat cushion in the face outlet hole, so that the comfortable airflow around the occupant seated on the seat cushion is less likely to diffuse to the outside.

In this way, in the configuration in which the diffusion suppression portion is provided on the long edge portion where the distance from the seat cushion is large, the airflow from the face outlet is concentrated around the occupant to provide comfortable air conditioning with high immediate effect. be able to.
It can provide a comfortable air flow.

According to the seventh aspect, the blowout hole is a face blowout hole that blows air toward the upper part of the seat cushion on which the occupant of the vehicle sits. The hole forming member is installed so that a pair of long edges of the blowout holes extend along the vertical direction of the vehicle. The diffusion suppressing portion is provided on the long edge portion of the pair of long edge portions, which has a small distance from the seat cushion in the width direction of the vehicle.

According to this, the diffusion suppressing portion suppresses the diffusion of the airflow blown from the side close to the seat cushion in the face outlet hole, so that the comfortable airflow can easily reach the occupant seated on the seat cushion.

On the other hand, the airflow blown out from the side far from the seat cushion in the face outlet hole diffuses around the occupant seated on the seat cushion, so that the occupant's surroundings can be made comfortable.

In this way, in the configuration in which the diffusion suppression portion is provided on the long edge portion where the distance from the seat cushion is small, the airflow from the face outlet can provide a comfortable air-conditioning feeling to the occupants and the passenger compartment is also in a comfortable state. Can be.

According to the eighth aspect, the blowout hole is a foot blowout hole that blows air downward of the seat cushion on which the occupant of the vehicle sits. The hole forming member is installed so that a pair of long edges extend along the front-rear direction of the vehicle. The diffusion suppressing portion is provided on the long edge portion of the pair of long edge portions, which has a large distance from the seat cushion in the width direction of the vehicle.

According to this, the airflow blown from the side close to the seat cushion in the foot outlet hole diffuses to the vicinity of the feet of the occupant seated on the seat cushion, so that the occupant's feet can be in a comfortable state.

On the other hand, the diffusion suppressing portion suppresses the diffusion of the airflow blown from the side far from the seat cushion in the foot blowout hole, so that the comfortable airflow at the feet of the occupant seated on the seat cushion is less likely to diffuse to the outside.

As described above, in the configuration in which the diffusion suppressing portion is provided on the long edge portion having a large distance from the seat cushion, the airflow from the foot outlet can be concentrated on the feet of the occupant to provide a comfortable airflow.

According to the ninth aspect, the blowout hole is a foot blowout hole that blows air toward the lower side of the seat cushion on which the occupant of the vehicle sits. The hole forming member is installed so that a pair of long edges extend along the front-rear direction of the vehicle. The diffusion suppressing portion is provided on the long edge portion of the pair of long edge portions, which has a small distance from the seat cushion in the width direction of the vehicle.

According to this, the diffusion suppressing portion suppresses the diffusion of the airflow blown from the side close to the seat cushion in the foot blowout hole, so that the comfortable airflow can easily reach the feet of the occupant seated on the seat cushion.

On the other hand, the airflow blown out from the side far from the seat cushion in the foot outlet hole diffuses around the occupant seated on the seat cushion, so that the occupant's surroundings can be made comfortable.

In this way, in the configuration in which the diffusion suppression portion is provided on the long edge portion where the distance from the seat cushion is small, the airflow from the foot outlet can provide a comfortable air-conditioning feeling to the occupants and the passenger compartment is also in a comfortable state. Can be.

According to the tenth viewpoint, the blowout hole is a cold air blowout hole for blowing out a confluence space where hot air and cold air meet inside the air conditioning case of the air conditioning unit, and blowing cold air toward the confluence space. The diffusion suppression portion is provided on the long edge portion of the pair of long edge portions, which is arranged inside the air conditioning case and has a small distance from the heating heat exchanger that generates warm air.

According to this, since the cold air blown from the cold air blowing hole is less likely to diffuse to the heating heat exchanger side, it is possible to suppress an unintended temperature rise of the cold air. According to this, the maximum cooling performance in the air conditioning unit can be improved.

50 Defroster outlet (air outlet)
51 Defroster duct (duct)
510 Blow-out flow path 52 Defroster blow-out member (hole forming member)
520 Defroster outlet hole (outlet hole)
521 Hole peripheral part 522, 523 Pair of long edge parts 524, 525 Pair of short edge parts 53 Diffusion suppression part

Claims (10)

It is an air blowing part that blows air toward the blowing target.
Ducts (51, 61, 71, 81) forming blowout channels (510, 610, 710, 123B) through which air blown toward the blowout target passes, and
A hole forming member (52, 62, 63) that forms a flat hole-shaped blowout hole (520, 620, 630, 720, 730, 820) that blows air toward the blowout target on the downstream side of the air flow of the duct. , 72, 73, 82), and
Among the hole forming members, the hole peripheral portions (521, 621, 631, 721, 731, 821) surrounding the blowout hole are paired with long edge portions (522, 523, 622, 623, 632) extending so as to face each other. 633, 722, 723, 732, 733, 822, 823) and a pair of shorts that are connected to both ends of the pair of long edge portions and face each other with a distance larger than the distance between the pair of long edge portions. It is configured to include edges (524, 525, 624, 625, 634, 635, 724, 725, 734, 735, 824, 825) and is one of the pair of long edges and the pair of short edges. An air blowing unit provided with a diffusion suppressing unit (53, 66, 67, 76, 77, 83) that suppresses the diffusion of the airflow blown from the blowing hole to the blowing target. The diffusion suppressing portion has a smaller opening area than the blowout hole, and a plurality of fine holes (531, 661, etc.) that blow out a part of the airflow flowing from the blowout flow path to the blowout hole toward the blowout target. The air jet portion according to claim 1, further comprising 671, 761, 771, 831). The diffusion suppressing portion is configured to include a partition portion (533) that forms a plurality of microchannels (532) that guide a part of the airflow flowing through the blowout channel to the plurality of microholes (531). , The air blowing unit according to claim 2. The air blowing portion according to claim 3, wherein the plurality of fine flow paths have a contracted flow shape in which the flow path area becomes smaller from the upstream side to the downstream side of the air flow. The blowout hole is a defroster blowout that targets the windshield (W) of the vehicle (1) as the blowout target, opens into an instrument panel (IP) adjacent to the windshield, and blows air along the inner surface of the windshield. It is a hole (520)
The hole forming member (62) is installed in the instrument panel so that the pair of long edges (522, 523) of the outlet holes extend along the width direction of the vehicle.
The diffusion suppressing portion (53) is provided in the long edge portion (523) of the pair of long edge portions, which has a large distance from the windshield in the front-rear direction of the vehicle, according to claims 1 to 4. The air outlet according to any one of them. The blowout hole is a face blowout hole (620, 630) that blows air toward the upper side of the seat cushion (Sc) on which the occupant of the vehicle sits.
The hole forming member (62) is installed so that the pair of long edges (622, 623, 632, 633) of the blowout hole extend along the vertical direction of the vehicle.
The diffusion suppressing portion (66, 67) is provided in the long edge portion (623, 633) of the pair of long edge portions, which has a large distance from the seat cushion in the width direction of the vehicle. The air outlet according to any one of 1 to 4. The blowout hole is a face blowout hole (620, 630) that blows air toward the upper side of the seat cushion (Sc) on which the occupant of the vehicle sits.
The hole forming member (62) is installed so that the pair of long edges (622, 623, 632, 633) of the blowout hole extend along the vertical direction of the vehicle.
The diffusion suppressing portion (66, 67) is provided on the long edge portion (622, 632) of the pair of long edge portions, which has a small distance from the seat cushion in the width direction of the vehicle. The air outlet according to any one of 1 to 4. The outlet is a foot outlet (720, 730) that blows air downward from the seat cushion (Sc) on which the occupant of the vehicle sits.
The hole forming member (72) is installed so that the pair of long edge portions (722, 723, 732, 733) extend along the front-rear direction of the vehicle.
The diffusion suppressing portion (76, 77) is provided in the long edge portion (723, 733) of the pair of long edge portions, which has a large distance from the seat cushion in the width direction of the vehicle. The air outlet according to any one of 1 to 4. The outlet is a foot outlet (720, 730) that blows air downward from the seat cushion (Sc) on which the occupant of the vehicle sits.
The hole forming member (72) is installed so that the pair of long edge portions (722, 723, 732, 733) extend along the front-rear direction of the vehicle.
The diffusion suppressing portion (76, 77) is provided in the long edge portion (722, 732) of the pair of long edge portions, which has a small distance from the seat cushion in the width direction of the vehicle. The air outlet according to any one of 1 to 4. The outlet is a cold air outlet hole that blows cold air toward the confluence space (127) where hot air and cold air meet inside the air conditioning case (12) of the air conditioning unit (10). (820)
The diffusion suppressing portion is a long edge portion of the pair of long edge portions (822, 823) that is arranged inside the air conditioning case and has a small distance from the heating heat exchanger (16) that generates warm air. The air blowing unit according to any one of claims 1 to 4, which is provided in (822).

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