Apparatus for ventilating door trim of vehicle

Abstract

The present invention relates to a ventilation device for a vehicle door trim capable of selecting a wind type, and more specifically, to a technology that forms a duct for strong wind, a duct for no wind, and a path setting duct capable of setting the airflow path inside the door trim, thereby enabling strong wind or no wind without airflow to be discharged from the door trim into the vehicle interior according to the passenger's selection.

Description

Technology Field

[0001] The present invention relates to a ventilation device for a vehicle door trim capable of selecting a wind type, and more specifically, to a technology that forms a duct for strong wind, a duct for no wind, and a path setting duct capable of setting the airflow path inside the door trim, thereby enabling strong wind or no wind without airflow to be discharged from the door trim into the vehicle interior according to the passenger's selection. Background Technology

[0002] Modern automobiles are evolving beyond the concept of a simple means of transportation into living spaces. Accordingly, vehicle interior ventilation systems are also being continuously developed to provide a comfortable environment for passengers.

[0003] A vehicle ventilation system is a device for cooling or heating the vehicle interior by introducing outside air into the vehicle interior or by heating or cooling the air circulating within the vehicle interior. The air conditioning case is equipped with an evaporator for cooling and a heater core for heating, and is configured to discharge the air cooled or heated by the evaporator or heater core through an air outlet formed in the vehicle's interior space.

[0004] However, as shown in Fig. 1(a), this conventional vehicle ventilation device had a problem in that the air discharged through the air outlet (1) blows out toward the front of the passenger and comes into direct contact with the passenger, causing the passenger to feel the airflow excessively and the discomfort index to rise.

[0005] In addition, in the case of a vehicle ventilation seat that is widely applied to automobiles recently, as shown in FIG. 1(b), air introduced into the duct (3) through a blower (2) travels along the air flow path (4) of the duct (3) and is discharged into the interior of the vehicle through a plurality of holes (5, 6) formed in the duct (3). At this time, the flow rate of air is concentrated in the hole (5) located close to the blower (2), and the strength of the wind discharged through the hole (5) located close to the blower (2) and the hole (6) located far away is not uniform, so the passenger does not feel an even airflow sensation on their buttocks and back, but feels an airflow sensation concentrated only in some areas.

[0006] Meanwhile, prior art related to vehicle ventilation devices includes Korean Patent Publication No. 10-2022-0077985. The problem to be solved

[0007] The present invention has been devised to solve the problems of the prior art described above, and aims to provide a technology that allows strong wind or windless air without airflow to be discharged from the door trim into the vehicle's interior according to the passenger's choice by forming a duct for strong wind, a duct for no airflow, and a path setting duct capable of setting the airflow path inside the door trim. means of solving the problem

[0008] A ventilation device for a vehicle door trim capable of selecting a wind type according to the present invention for achieving the above objective comprises: an air inlet section that introduces and mixes air from the vehicle interior and air cooled or heated in the vehicle's air conditioning system; a path setting duct that sets the flow path of the air mixed in the air inlet section; a strong wind duct that strongly discharges the mixed air introduced from the path setting duct into the vehicle interior; and a windless duct that discharges the mixed air introduced from the path setting duct into the vehicle interior as a windless wind without airflow sensation.

[0009] At this time, the air inlet comprises: an air conditioning air inlet that is connected to the vehicle's air conditioning system and into which cooled or heated air is introduced; and an interior air inlet that sucks in the vehicle's interior air; wherein the interior air inlet comprises: a blower for sucking in the vehicle's interior air; and a filter provided to purify the vehicle's interior air sucked in through the blower.

[0010] In addition, the path setting duct is characterized by comprising: a mixed air inlet into which air mixed from the air inlet is introduced; a first discharge port communicating with the strong wind duct; a second discharge port communicating with the windless duct; and a shield rotatably formed inside the path setting duct to set the flow path of the mixed air.

[0011] In addition, the above-described wind duct is characterized by being formed by including: a first duct assembly comprising an inlet communicating with a first discharge port of the path setting duct; a plurality of discharge ports for discharging mixed air introduced through the inlet; and a second duct assembly comprising a plurality of coupling holes that are fitted together with the plurality of discharge ports of the first duct assembly; and a protrusion on which a wind discharge port is formed.

[0012] In addition, the above-mentioned windless duct is formed by including a third duct assembly and a fourth duct assembly that are joined together, and is characterized in that an air flow path communicating with the second discharge port of the path setting duct is formed inside the third duct assembly and the fourth duct assembly.

[0013] In addition, the third duct assembly is characterized by comprising: a plurality of holes for discharging mixed air flowing through the air flow path; and a plurality of flow guide ribs for dispersing the mixed air flowing through the air flow path over the entire surface area of ​​the air flow path. Effects of the invention

[0014] The ventilation device for a vehicle door trim capable of selecting a wind type according to the present invention forms a duct for strong wind, a duct for no wind, and a path setting duct capable of setting the air movement path inside the door trim, so that strong wind or no wind without airflow can be discharged from the door trim into the interior of the vehicle according to the passenger's selection.

[0015] That is, when the occupant operates the vehicle's main display panel to select the discharge of a strong wind from the door trim, the shield of the path setting duct rotates to open the first discharge port, and the air flowing through the opened first discharge port is strongly discharged into the vehicle's interior through the strong wind duct.

[0016] Meanwhile, when the occupant operates the vehicle's main display panel to select the discharge of airflow-free wind from the door trim, the shield of the path setting duct rotates to open the second discharge port, and the air flowing through the opened second discharge port is discharged into the vehicle's interior in the form of airflow-free indirect wind through the windless duct.

[0017] At this time, in the present invention, a plurality of micro-holes are formed in the center trim coupled to the windless duct and in the fabric attached to the outer surface of the center trim, so that air discharged through the plurality of holes of the third duct assembly of the windless duct passes through the micro-holes of the center trim and the micro-holes of the fabric in a double manner and is discharged into the interior of the vehicle, thereby enabling the discharge of windless air without a sense of airflow that can be felt as a gentle breeze even to passengers located at a close distance.

[0018] In addition, in the present invention, a plurality of flow guide ribs are formed in the air flow path of the third duct assembly of the windless duct, so that the air flowing through the air flow path is dispersed over the entire surface area of ​​the air flow path by the plurality of flow guide ribs, thereby ensuring a uniform flow rate over the entire surface area of ​​the air flow path.

[0019] That is, as the mixed air entering and flowing through the air flow path strikes multiple flow guide ribs and is dispersed to both sides of the air flow path, the flow rate of the mixed air discharged through multiple holes of the third duct assembly becomes uniform.

[0020] Therefore, since mixed air is uniformly discharged through multiple holes of the third duct assembly, the wind finally discharged into the vehicle interior through the micro-holes of the center trim and fabric is also discharged with a constant wind intensity across the entire surface area of ​​the micro-holes of the center trim and fabric, allowing the occupant to feel an even airflow throughout.

[0021] In addition, the present invention can simultaneously perform the functions of a ventilation system and an air purification system by drawing in indoor air, filtering out foreign substances through a filter, mixing it with air introduced from the vehicle's air conditioning system, and then discharging it back into the vehicle's interior.

[0022] In addition, in the present invention, by mixing the air from the vehicle interior introduced through the indoor air inlet with the cooled or heated air introduced through the air conditioning air inlet and discharging it into the vehicle interior, the volume of air discharged from the door trim can be increased without adding equipment with a complex structure, or significantly increasing production costs and energy consumption.

[0023] Specifically, in the case of conventional vehicle air conditioning systems, the airflow from the system alone is insufficient, and increasing the configuration of the system to increase airflow leads to an increase in the size of the system itself, resulting in a significant increase in production costs and energy consumption.

[0024] On the other hand, in the present invention, by simply adding an indoor air inlet with a simple structure consisting of a blower and a filter to an air inlet where an air conditioning air inlet is formed, the air inside the vehicle introduced through the indoor air inlet is added and mixed with the cooled or heated air introduced through the air conditioning air inlet and then discharged from the door trim, thereby increasing the volume of air discharged from the door trim without adding equipment with a complex structure, or significantly increasing production costs and energy consumption.

[0025] In addition, in the present invention, since the air that is cooled or heated and introduced through an air conditioning air inlet formed to communicate with the air conditioning system of the vehicle is mixed with the indoor air sucked in through a blower and then discharged into the interior of the vehicle, it is possible to freely adjust the temperature of the air discharged from the door trim.

[0026] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0027] FIG. 1 is a drawing for explaining a conventional vehicle ventilation device. FIG. 2 is a drawing showing the state in which a ventilation device for a vehicle door trim, capable of selecting a wind type according to an embodiment of the present invention, is installed on the door trim. FIG. 3 is a drawing illustrating the overall configuration of a ventilation device for a vehicle door trim that allows selection of a wind type according to an embodiment of the present invention. Figure 4 is a drawing for explaining the detailed structure of the air inlet section of the overall configuration of the ventilation device shown in Figure 3. Figure 5 is a drawing for explaining the detailed structure of the path setting duct among the overall configuration of the ventilation device shown in Figure 3. Figure 6 is a drawing for explaining the detailed structure of a duct for strong winds among the overall configuration of the ventilation device shown in Figure 3. Figure 7 is a drawing for explaining the detailed structure of a windless duct among the overall configuration of the ventilation device shown in Figure 3. Figure 8 is a drawing for explaining the detailed structure of the third duct assembly of the windless duct shown in Figure 7. Specific details for implementing the invention

[0028] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. However, some components unrelated to the gist of the invention may be omitted or compressed; nevertheless, omitted components are not necessarily unnecessary for the present invention and may be combined and used by those skilled in the art to which the present invention pertains.

[0029] FIG. 2 is a drawing showing the state in which a ventilation device for a vehicle door trim, capable of selecting a wind type according to an embodiment of the present invention, is installed on the door trim; FIG. 3 is a drawing showing the overall configuration of a ventilation device for a vehicle door trim, capable of selecting a wind type according to an embodiment of the present invention; FIG. 4 is a drawing for explaining the detailed structure of the air inlet part among the overall configuration of the ventilation device shown in FIG. 3; FIG. 5 is a drawing for explaining the detailed structure of the path setting duct among the overall configuration of the ventilation device shown in FIG. 3; FIG. 6 is a drawing for explaining the detailed structure of the strong wind duct among the overall configuration of the ventilation device shown in FIG. 3; FIG. 7 is a drawing for explaining the detailed structure of the windless duct among the overall configuration of the ventilation device shown in FIG. 3; and FIG. 8 is a drawing for explaining the detailed structure of the third duct assembly of the windless duct shown in FIG. 7.

[0030] As illustrated in FIGS. 2 to 8, a ventilation device for a vehicle door trim capable of selecting a wind type according to an embodiment of the present invention is formed on the inner side of the door trim (10) and discharges a strong wind or a windless airflow from the upper side of the armrest (11) into the interior of the vehicle according to the selection of the occupant, and is formed by including an air inlet (100), a path setting duct (200), a strong wind duct (300), and a windless duct (400).

[0031] The air inlet section (100) is configured to mix air from the vehicle interior and air that has been cooled or heated in the vehicle's air conditioning system and then flow into a path setting duct (200). As shown in FIGS. 3 and 4, it consists of an air conditioning air inlet section (110) that communicates with the vehicle's air conditioning system and an interior air inlet section (120) formed on one side of the door trim (10) through which the vehicle's interior air is introduced.

[0032] The air conditioning air inlet (110) is connected to the air conditioning system of the vehicle, and air that has been cooled or heated through the air conditioning system is introduced through the air conditioning air inlet (110).

[0033] A blower (124) for sucking in air from the vehicle interior is formed in the indoor air inlet (120), and a first filter (121) and a second filter (122) are formed in front of the blower (124) and integrally coupled to the filter frame (123).

[0034] These first filter (121) and second filter (122) are provided to purify the air inside the vehicle that is sucked in by the blower (124), the first filter (121) is positioned in front of the second filter (122) to filter out large dust particles in the air, and the second filter (122) is positioned behind the first filter (121) to filter out fine dust particles in the air.

[0035] For example, a pre-filter that filters out large dust particles may be used as the first filter (121), and a high-performance HEPA filter that filters out fine dust particles may be used as the second filter (122). In the present invention, the types of the first filter (121) and the second filter (122) are not limited, and various appropriate filters suitable for the purpose of forming each filter may be used, and it is also possible to additionally form a dehumidifying filter that removes moisture from the air.

[0036] As described above, the cooled or heated air introduced through the air conditioning air inlet (110) and the purified air from the vehicle interior introduced through the indoor air inlet (120) are mixed in the inner space of the blower (124) and then flow into the path setting duct (200) to be described later.

[0037] The path setting duct (200) is configured to set a flow path for air mixed in the air inlet (100) and selectively flow it to a strong wind duct (300) or a windless duct (400). As shown in FIGS. 3 and 5, it is formed by including a mixed air inlet (210) into which air mixed in the air inlet (100) is introduced, a first discharge port (220) communicating with the strong wind duct (300), a second discharge port (230) communicating with the windless duct (400), and a shield (240) rotatably formed inside the path setting duct (200) to set the flow path for the mixed air.

[0038] Referring to FIG. 5, the operation of the shield (240) is explained as follows: as in FIG. 5(b), the shield (240) rotates to close the second discharge port (230) and open the first discharge port (220), so that the mixed air introduced through the mixed air inlet (210) flows into the strong wind duct (300) through the first discharge port (220); and as in FIG. 5(c), the shield (240) rotates to close the first discharge port (220) and open the second discharge port (230), so that the mixed air introduced through the mixed air inlet (210) flows into the windless duct (400) through the second discharge port (230). At this time, although not shown in the drawing, a servo motor (not shown) for automatically performing the rotational movement of the shield (240) is formed to be connected to the rotation axis of the shield (240), and the occupant can control the rotational movement of the shield (240) by operating the main display panel of the vehicle.

[0039] The strong wind duct (300) is configured to strongly discharge mixed air introduced through the first discharge port (220) of the path setting duct (200) into the interior of the vehicle, and is formed by including a first duct assembly (310) and a second duct assembly (320) as shown in FIGS. 3 and 6.

[0040] In the first duct assembly (310), an inlet (311) and a plurality of discharge ports (322) are formed, and the inlet (311) is connected to the first discharge port (220) of the path setting duct (200), so that mixed air flows into the inner space of the first duct assembly (310) through the inlet (311), and the introduced mixed air flows along the inner space of the first duct assembly (310) and is discharged through the plurality of discharge ports (322).

[0041] A second duct assembly (320) has a protrusion (321) and a plurality of coupling holes (322) formed therein. The plurality of coupling holes (322) are fitted together with a plurality of discharge ports (322) of the first duct assembly (310) to serve to connect the first duct assembly (310) and the second duct assembly (320) to each other. The protrusion (321) is formed on the upper part of the second duct assembly (320) in a shape that protrudes forward (toward the interior of the vehicle), and a strong wind discharge port (321a) in the form of a narrow passage is formed between the upper surface and the lower surface.

[0042] After the first duct assembly (310) and the second duct assembly (320) are combined with each other, the center trim (12) is connected to the front of the second duct assembly (320), and when the strong wind duct (300) is connected to the center trim (12), the protrusion (321) of the second duct assembly (320) is inserted into the through groove (12a) formed in the longitudinal direction (front and rear direction of the vehicle) at the top of the center trim (12), and the protrusion (321) and the strong wind discharge port (321a) formed in the protrusion are exposed to the interior of the vehicle.

[0043] As shown in FIG. 6(b), the mixed air discharged through the multiple discharge ports (322) of the first duct assembly (310) by the above structure passes through the coupling hole (312) of the second duct assembly (320) and then passes through the strong wind discharge port (321a) formed in the form of a narrow passage on the upper protrusion (321) of the second duct assembly (320) and is strongly discharged into the interior of the vehicle.

[0044] The windless duct (400) is configured to discharge mixed air introduced through the second discharge port (230) of the path setting duct (200) into the interior of the vehicle as a windless wind without airflow, and is formed by including a third duct assembly (410) and a fourth duct assembly (420) as shown in FIG. 7.

[0045] In the fourth duct assembly (420), multiple path spaces are formed at multiple points in the extension direction, extending like tree branches to the left and right sides in the extension direction, and in the third duct assembly (410), multiple holes (411) are formed at points corresponding to the end points of the multiple path spaces extending like tree branches from the fourth duct assembly (420).

[0046] When the third duct assembly (410) and the fourth duct assembly (420) are combined, an air flow path (430) is formed, which is a space in which mixed air flows inside, and the air flow path (430) is connected to the second discharge port (230) of the path setting duct (200), so that mixed air flows into the air flow path (430) from the second discharge port (230).

[0047] The mixed air flowing in the air flow path (430) is discharged to the front of the third duct assembly (410) (towards the interior of the vehicle) through a plurality of holes (411) of the third duct assembly (410).

[0048] As described above, the mixed air discharged through the multiple holes (411) of the third duct assembly (410) passes through the micro-holes (12a, 13a) formed in the center trim (12) and fabric (13), which are sequentially connected to the front of the windless duct (400) as shown in FIG. 7(b), and is then discharged into the interior of the vehicle. Therefore, a windless air with no airflow sensation is discharged, which can be felt as a gentle breeze even to passengers located at a close distance.

[0049] At this time, as illustrated in FIG. 8, in the air flow path (430) of the third duct assembly (410) of the windless duct (400), a plurality of flow guide ribs (412) are formed at points corresponding to a plurality of path spaces along the extended direction of the air flow path (430). As the air flowing through the air flow path (430) is sequentially introduced into the plurality of path spaces in portions of the total amount by the plurality of flow guide ribs (412), it flows while being distributed over the entire area of ​​the air flow path (430), thereby ensuring a uniform flow rate over the entire area of ​​the air flow path (430).

[0050] That is, as the mixed air flowing into the air flow path (430) strikes the multiple flow guide ribs (412) and flows while being dispersed to both sides of the air flow path (430), the flow rate of the mixed air discharged through the multiple holes (411) of the third duct assembly (410) becomes uniform.

[0051] Therefore, since the mixed air is uniformly discharged through the multiple holes (411) of the third duct assembly (410), the wind finally discharged into the interior of the vehicle through the micro-holes (12a, 13a) of the center trim (12) and the fabric (13) is also discharged with a uniform wind intensity over the entire surface area of ​​the micro-holes (12a, 13a) of the center trim (12) and the fabric (13), so that the occupant can feel an even airflow sensation overall.

[0052] The operation process of the ventilation device for a vehicle door trim capable of selecting a wind type according to the embodiment of the present invention described above is as follows.

[0053] First, when the passenger operates the main display panel of the vehicle to select that a strong airflow be discharged from the door trim (10), the cover (240) of the path setting duct (200) rotates as in FIG. 5(b) to close the second discharge port (230) and open the first discharge port (220).

[0054] Afterwards, air that has been cooled or heated through the vehicle's air conditioning system is introduced through the air conditioning air inlet (110), and the blower (124) is operated so that air from the vehicle's interior is introduced through the indoor air inlet (120), mixed with each other in the inner space of the blower (124), then introduced into the inner space of the path setting duct (200) through the mixed air inlet (210) of the path setting duct (200), and then introduced into the inner space of the first duct assembly (310) of the strong wind duct (300) through the open first discharge port (220).

[0055] The mixed air introduced into the inner space of the first duct assembly (310) of the strong wind duct (300) flows sequentially through the multiple discharge ports (322) of the first duct assembly (310) and the connecting hole (312) of the second duct assembly (320) as shown in FIG. 6(b), and then passes through the strong wind discharge port (321a) formed in the form of a narrow passage on the upper protrusion (321) of the second duct assembly (320) and is strongly discharged into the interior of the vehicle.

[0056] Meanwhile, when the passenger operates the main display panel of the vehicle to select that airflow-free wind is discharged from the door trim (10), the cover (240) of the path setting duct (200) rotates as shown in FIG. 5(c) to close the first discharge port (220) and open the second discharge port (230).

[0057] Afterwards, air that has been cooled or heated through the air conditioning system of a vehicle is introduced through the air conditioning air inlet (110), and the blower (124) is operated so that air from the interior of the vehicle is introduced through the interior air inlet (120), mixed with each other in the interior space of the blower (124), then introduced into the interior of the path setting duct (200) through the mixed air inlet (210) of the path setting duct (200), and then introduced into the air flow path (430) of the windless duct (400) through the open second discharge port (230) and flows along the air flow path (430).

[0058] The mixed air flowing along the air flow path (430) of the windless duct (400) is discharged through a plurality of holes (411) of the third duct assembly (410) as shown in FIG. 7(b), then passes through the micro-holes (12a, 13a) formed in the center trim (12) and fabric (13), respectively, which are sequentially connected to the front of the windless duct (400), and then is discharged into the interior of the vehicle.

[0059] As described above, the mixed air discharged through the multiple holes (411) of the third duct assembly (410) passes through the micro-holes (12a, 13a) formed in the center trim (12) and fabric (13), respectively, and is then discharged into the interior of the vehicle, so that a windless airflow with no airflow sensation can be discharged, which can be felt as a gentle breeze even to passengers located at a close distance.

[0060] At this time, as shown in FIG. 8, a plurality of flow guide ribs (412) are formed in the air flow path (430) of the third duct assembly (410) of the windless duct (400), and the air flowing through the air flow path (430) is dispersed over the entire area of ​​the air flow path (430) by the plurality of flow guide ribs (412), thereby ensuring a uniform flow rate over the entire area of ​​the air flow path (430).

[0061] Specifically, in the case of a conventional vehicle ventilation seat, as shown in FIG. 1(b), air introduced into the duct (3) through a blower (2) travels along the air flow path (4) of the duct (3) and is discharged into the interior of the vehicle through a plurality of holes (5, 6) formed in the duct (3). At this time, the air flow is concentrated in the hole (5) located close to the blower (2), and the strength of the wind discharged through the hole (5) located close to the blower (2) and the hole (6) located far away is not uniform, so the passenger does not feel an even airflow sensation on their buttocks and back, but feels an airflow sensation concentrated only in some areas.

[0062] On the other hand, in the present invention, as the mixed air flowing into the air flow path (430) collides with the plurality of flow guide ribs (412) and flows while being dispersed to both sides of the air flow path (430), the flow rate of the mixed air discharged through the plurality of holes (411) of the third duct assembly (410) becomes uniform.

[0063] Therefore, since the mixed air is uniformly discharged through the multiple holes (411) of the third duct assembly (410), the wind finally discharged into the interior of the vehicle through the micro-holes (12a, 13a) of the center trim (12) and the fabric (13) is also discharged with a uniform wind intensity over the entire surface area of ​​the micro-holes (12a, 13a) of the center trim (12) and the fabric (13), so that the occupant can feel an even airflow sensation overall.

[0064] In addition, in the present invention, air from the vehicle interior introduced through the indoor air inlet (120) passes through the first filter (121) and the second filter (122) to filter out foreign substances, and is then mixed with cooled or heated air introduced through the air conditioning air inlet (110) and discharged back into the vehicle interior, thereby simultaneously performing the functions of a ventilation device and an air purification device.

[0065] In addition, in the present invention, the airflow of air discharged from the door trim (10) can be increased without adding equipment of a complex structure, significantly increasing production costs and energy consumption, by mixing the air from the vehicle interior introduced through the indoor air inlet (120) with the cooled or heated air introduced through the air conditioning air inlet (110) and discharging it into the vehicle interior.

[0066] Specifically, in the case of conventional vehicle air conditioning systems, the airflow from the system alone is insufficient, and increasing the configuration of the system to increase airflow leads to an increase in the size of the system itself, resulting in a significant increase in production costs and energy consumption.

[0067] On the other hand, in the present invention, by simply adding an indoor air inlet (120) with a simple structure consisting of a blower (124) and filters (121, 122) to an air inlet (100) in which an air conditioning air inlet (110) is formed, the air inside the vehicle introduced through the indoor air inlet (120) is added and mixed with the cooled or heated air introduced through the air conditioning air inlet (110) and then discharged from the door trim (10), the volume of air discharged from the door trim (10) can be increased without adding equipment of a complex structure, or significantly increasing production costs and energy consumption.

[0068] In addition, in the present invention, the temperature of the air discharged from the door trim (10) can be freely adjusted because the air that is cooled or heated and introduced through the air conditioning air inlet (110) formed to communicate with the air conditioning system of the vehicle is mixed with the air inside the vehicle sucked in through the blower (124) and then discharged into the interior of the vehicle.

[0069] Specifically, as shown in FIG. 1(b), conventional vehicle ventilation seats discharge the air inside the vehicle directly to the outside of the seat through the blower (2) into the duct (3), making it impossible to control the temperature of the discharged air.

[0070] On the other hand, in the present invention, the temperature of the air discharged from the door trim (10) can be freely adjusted as the air cooled or heated in the vehicle's air conditioning system is discharged through the door trim (10).

[0071] As described in detail above, the ventilation device for a vehicle door trim capable of selecting a wind type according to the present invention forms a duct for strong wind, a duct for no wind, and a path setting duct capable of setting the air movement path inside the door trim, so that strong wind or no wind without airflow can be discharged from the door trim into the interior of the vehicle according to the passenger's selection.

[0072] That is, when the occupant operates the vehicle's main display panel to select the discharge of a strong wind from the door trim, the shield of the path setting duct rotates to open the first discharge port, and the air flowing through the opened first discharge port is strongly discharged into the vehicle's interior through the strong wind duct.

[0073] Meanwhile, when the occupant operates the vehicle's main display panel to select the discharge of airflow-free wind from the door trim, the shield of the path setting duct rotates to open the second discharge port, and the air flowing through the opened second discharge port is discharged into the vehicle's interior in the form of airflow-free indirect wind through the windless duct.

[0074] At this time, in the present invention, a plurality of micro-holes are formed in the center trim coupled to the windless duct and in the fabric attached to the outer surface of the center trim, so that air discharged through the hole of the third duct assembly of the windless duct passes through the micro-hole of the center trim and the micro-hole of the fabric twice before being discharged into the interior of the vehicle, thereby enabling the discharge of windless air without a sense of airflow, which can be felt as a gentle breeze even to passengers located at a close distance.

[0075] In addition, in the present invention, a plurality of flow guide ribs are formed in the air flow path of the third duct assembly of the windless duct, so that air flowing through the air flow path is dispersed over the entire area of ​​the air flow path by the plurality of flow guide ribs (412), thereby ensuring a uniform flow rate over the entire area of ​​the air flow path.

[0076] That is, as the mixed air entering and flowing through the air flow path strikes multiple flow guide ribs and is dispersed to both sides of the air flow path, the flow rate of the mixed air discharged through multiple holes of the third duct assembly becomes uniform.

[0077] Therefore, since mixed air is uniformly discharged through multiple holes of the third duct assembly, the wind finally discharged into the vehicle interior through the micro-holes of the center trim and fabric is also discharged with a constant wind intensity across the entire surface area of ​​the micro-holes of the center trim and fabric, allowing the occupant to feel an even airflow throughout.

[0078] In addition, the present invention can simultaneously perform the functions of a ventilation system and an air purification system by drawing in indoor air, filtering out foreign substances through a filter, mixing it with air introduced from an air conditioning system, and then discharging it back into the vehicle's interior.

[0079] In addition, in the present invention, by mixing the air from the vehicle interior introduced through the indoor air inlet with the cooled or heated air introduced through the air conditioning air inlet and discharging it into the vehicle interior, the volume of air discharged from the door trim can be increased without adding equipment with a complex structure, or significantly increasing production costs and energy consumption.

[0080] Specifically, in the case of conventional vehicle air conditioning systems, the airflow from the system alone is insufficient, and increasing the configuration of the system to increase airflow leads to an increase in the size of the system itself, resulting in a significant increase in production costs and energy consumption.

[0081] On the other hand, in the present invention, by simply adding an indoor air inlet with a simple structure consisting of a blower and a filter to an air inlet where an air conditioning air inlet is formed, the air inside the vehicle introduced through the indoor air inlet is added and mixed with the cooled or heated air introduced through the air conditioning air inlet and then discharged from the door trim, thereby increasing the volume of air discharged from the door trim without adding equipment with a complex structure, or significantly increasing production costs and energy consumption.

[0082] In addition, in the present invention, since the air that is cooled or heated and introduced through the air conditioning air inlet formed to communicate with the air conditioning system of the vehicle is mixed with the indoor air sucked in through the blower and then discharged into the interior of the vehicle, it is possible to freely adjust the temperature of the air discharged from the door trim.

[0083] The preferred embodiments of the present invention described above are disclosed for illustrative purposes only, and those skilled in the art with ordinary knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes, and additions should be considered to fall within the scope of the claims of the present invention. Explanation of the symbols

[0084] Conventional Technology 1 : Air vent 2 : Blower 3 : Duct 4: Air flow path 5: Holes close to the blower 6: Hole far from the blower <The present invention> 10 : Door trim 11: Armrest 12 : Center trim 12a : Microhole 12b : Through groove 13 : Fabric 13a : Microholes 100 : Air inlet 110: Air conditioning air inlet 120: Indoor air intake 121 : First filter 122 : Second filter 123 : Filter Frame 124 : Blower 200 : Path setting duct 210: Mixed air inlet 220 : First discharge port 230 : Second discharge port 240 : Screen 300 : High-wind duct 310: 1st duct assembly 311 : Inlet 312 : Discharge port 320 : Second duct assembly 321 : Protrusion 321a : High-speed discharge outlet 322 : Connecting hole 400 : Windless duct 410: Third duct assembly 411 : Hall 412 : Flow guide rib 420 : 4th duct assembly 430: Air flow path

Claims

Claim 1 It comprises: an air inlet that introduces and mixes air from the vehicle interior and air that has been cooled or heated in the vehicle's air conditioning system; a path setting duct that sets the flow path of the air mixed in the air inlet; a high-wind duct that strongly discharges the mixed air introduced from the path setting duct into the vehicle interior; and a windless duct that discharges the mixed air introduced from the path setting duct into the vehicle interior as a windless breeze without airflow; wherein the path setting duct comprises: a mixed air inlet into which the air mixed in the air inlet is introduced; a first discharge port communicating with the high-wind duct; and a second discharge port communicating with the windless duct. and a shield rotatably formed inside the path setting duct to set the flow path of mixed air; wherein the windless duct is formed by including a third duct assembly and a fourth duct assembly that are coupled to each other, and an air flow path communicating with a second discharge port of the path setting duct is formed inside the third duct assembly and the fourth duct assembly, and the fourth duct assembly has multiple path spaces formed at multiple points along the extended direction that extend like tree branches to the left and right sides of the extended direction, and the third duct assembly has multiple holes formed at points corresponding to the end points of the path spaces of the fourth duct assembly for discharging mixed air flowing through the air flow path; and to disperse the mixed air flowing through the air flow path over the entire surface area of ​​the air flow path, it includes a plurality of flow guide ribs formed at points corresponding to the path space along the extended direction of the air flow path, and a center trim with sequentially formed micro-holes and a fabric with formed micro-holes are disposed in front of the third duct assembly, and the mixed air discharged through the plurality of holes of the third duct assembly passes through the micro-holes of the center trim and the fabric and is discharged into the vehicle interior, and the high-wind duct includes an inlet communicating with the first discharge port of the path setting duct;A ventilation device for a vehicle door trim capable of selecting a wind type, characterized by being formed by comprising: a first duct assembly including a plurality of discharge ports for discharging mixed air introduced through the inlet; and a second duct assembly including a plurality of coupling holes that are fitted and coupled with the plurality of discharge ports of the first duct assembly and a protrusion on which a strong wind discharge port is formed.

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