JP4940942B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner that is used in combination with a heating heat exchanger that uses hot water or the like as a heating heat source and an electric heating element as an auxiliary heat source, and is mounted in an instrument panel of a vehicle. It is suitable for use in air conditioning cases.

  Conventionally, as this type of vehicle air conditioner, for example, the one disclosed in Patent Document 1 is known. That is, an evaporator that is a cooling heat exchanger that cools air and a heater core that is a heating heat exchanger that heats air are arranged in series in an air conditioning case that forms an air passage. An electric heater is arranged on the downstream side of the air flow of the heater core so that the air heated by the heater core is further heated and blown out into the passenger compartment.

In addition, the electric heater includes an energizing heat generating portion that generates heat, a fin that transmits heat generated from the energizing heat generating portion to the air, an electrical component that supplies power to the energized heat generating unit, and a housing member that houses the electrical component Etc. are integrally formed. That is, the PTC heater formed with the PTC element as the energization heat generating portion to which electric power is supplied when heating is arranged as an electric heater on the downstream side of the air flow of the heater core.
JP 2006-213232 A

  However, according to the PTC heater as in Patent Document 1, in addition to supplying electric power to the energizing heat generating unit, the electrical component unit is configured to selectively drive a plurality of energizing heat generating units, and to overheat the energizing heat generating unit. A protection circuit that prevents or regulates large currents and a control circuit for intercommunication with an external control device may be required.

  In other words, if a drive circuit, a protection circuit, a control circuit, and the like are provided in the electrical component, the size of the housing member that accommodates the electrical component is increased. Thereby, there exists a problem which the arrangement | positioning space of the housing member in the one side of an air conditioning case becomes large.

  Specifically, when the energizing heat generating portion is arranged on the downstream side of the air flow of the heater core and the electric heater is arranged so that the housing member protrudes outward from one side surface of the air conditioning case, the side of the air conditioning case in the instrument panel However, there is a problem that mountability with other parts in the direction is lowered.

  Further, in the air conditioning case, since the downstream side of the air flow of the heater core is formed on the rear side of the vehicle, the length of the one side surface side of the air conditioning case to the rear end of the vehicle cannot be increased. That is, if the housing member is formed in an L shape with respect to the plurality of energized heat generating portions and is formed so as to extend to the rear side of the vehicle along one side surface of the air conditioning case, the total extending length is increased. There are limitations.

  Accordingly, an object of the present invention has been made in view of the above points, and mounting an air conditioning case on a vehicle by forming an electric heater using a housing member having a low protruding height outward from the side of the air conditioning case. It is in providing the vehicle air conditioner which can aim at the improvement of property.

In order to achieve the above object, the technical means described in claims 1 and 2 are employed. That is, in the invention according to claim 1, an air conditioning case (11) that forms an air passage, a heating heat exchanger (13) that heats the air that is disposed in the air conditioning case (11) and passes therethrough, In a vehicle air conditioner comprising: an electric heater (30) having an energized heat generating part (33) that is disposed downstream of the air flow of the heating heat exchanger (13) and heats air passing therethrough. The exchanger (13) is arranged on one side of the air conditioning case (11) so that the pipe connection portion (19) protrudes outward, and the air conditioning case (11) includes the pipe connection portion (19). A convex part (11a) projecting outward is formed on the opposite side so that the heating heat exchanger (13) can be accommodated, and the electric heater (30) is an electric part for operating the energizing heat generating part (33). (37) and at least the terminal portion of the power system ( Bei example a housing member (35) for housing electrical equipment section (37) therein has an 8 and 39), electrical equipment section between one end portion of the heat-generating unit terminal portions (38, 39) (33) (37) is electrically connected, the housing member (35) is formed integrally with one end of the energizing heat generating portion (33), and the housing member (35) is opposed to the pipe connecting portion (19). The housing member (35) is arranged on the downstream side of the air flow of the heat exchanger for heating (13) (33). ) From one end of the air-conditioning case (11) in an approximately L shape along the upstream direction of the air flow in the air-conditioning case (11). It is formed so as to extend along the outer side of the air conditioning case (11) A housing member (35) having a low protruding height is formed, and the housing member (35) has a concave portion (35a) that does not interfere with the convex portion (11a) formed on one side surface of the air conditioning case (11). It is characterized by being formed .

  According to this invention, the heat exchanger for heating (13) and the energizing heat generating part (33) are arranged in the air conditioning case (11) generally in parallel along the flow direction of the wind. By the way, although the piping connection part (19) of the heat exchanger (13) for a heating is arrange | positioned at the one side surface side of an air conditioning case (11), the air conditioning case (11) of the side which a pipe connection part (19) opposes. ) Has a free space formed on one side.

  Therefore, in the present invention, on one side surface of the air conditioning case (11) on the opposite side of the pipe connection portion (19), one side surface side of the air conditioning case (11) in which the energizing heat generating portion (33) is disposed, By forming the housing member (35) so as to extend along one side surface of the air conditioning case (11) where the heat exchanger (13) for heating is disposed from one side surface, the side surface side of the air conditioning case (11) An electric heater (30) using a housing member (35) having a low protruding height can be formed. Thereby, the mounting property to the vehicle of an air-conditioning case (11) can be improved.

  According to the present invention, the air conditioning case (11) has the ends of the heating heat exchanger (13) outward from both side surfaces of the air conditioning case (11) in order to secure a predetermined air passage with low ventilation resistance. A protrusion (11a) is formed so as to protrude.

  Therefore, the housing member (35) is formed with a concave portion (35a) that does not interfere with the convex portion (11a) of the air conditioning case (11), so that the housing has a low protruding height outward from the side surface of the air conditioning case (11). An electric heater (30) using the member (35) can be formed.

  According to this invention, the empty space on the one side of the air conditioning case (11) on the opposite side of the pipe connecting portion (19) can be utilized by forming the housing member (35) in a substantially L shape. . In addition, since the downstream side of the air flow of the heat exchanger for heating (13) is the rear side of the vehicle in the air conditioning case (11), there is a limit to increasing the total length of the short side, but the air conditioning case ( 11) There is a space in which the total length can be increased in the upstream direction of the air flow.

In the invention according to claim 2 , the electrical component (37) is characterized in that at least one of a drive circuit, a protection circuit, and a control circuit related to the energization heat generating portion (33) is configured in the housing member (35). Yes.

  According to the present invention, the physique of the housing member (35) is increased by providing the circuit in the electrical part (37). However, as described above, the height of the protrusion of the air conditioning case (11) to the outside on the side surface side is increased. An electric heater (30) using a lower housing member (35) can be formed. Thereby, the whole air-conditioning case (11) can be reduced in size. Therefore, it is suitable for an air conditioner using an electric heater (30) having the above circuit.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment mentioned later.

  Hereinafter, a vehicle air conditioner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a longitudinal sectional view showing an overall configuration of an air conditioning unit 10 of a vehicle air conditioner in the present embodiment. FIG. 2A is a front view showing a schematic configuration of the PTC heater 30, and FIG. 2B is a plan view shown in FIG. FIG. 3 is a partial cross-sectional view showing an arrangement of the PTC heater 30 in the air conditioning case 11.

  The ventilation system of the vehicle air conditioner according to the present embodiment is roughly divided into two parts, a blower unit (not shown) and an air conditioning unit 10 shown in FIG. The blower unit (not shown) is arranged offset from the center to the passenger seat side in the lower part of the instrument panel (instrument panel) in the vehicle interior, whereas the air conditioning unit 10 is an instrument in the vehicle interior. Of the lower part of the panel, it is arranged at a substantially central part in the vehicle left-right direction.

  As is well known, the blower unit (not shown) includes an inside / outside air switching box that switches between the inside air (vehicle interior air) and the outside air (vehicle outside air), and a blower that sucks and blows air through the inside / outside air switching box. It is configured. The air conditioning unit 10 is of a type in which both an evaporator 12 that is a heat exchanger for cooling and a heater core 13 that is a heat exchanger for heating are integrally incorporated in one common air conditioning case 11.

  The air conditioning case 11 is formed from a molded product made of a resin material having a certain degree of elasticity and excellent strength, such as polypropylene, in order to form an air passage. The air-conditioning case 11 is specifically composed of a plurality of divided cases. The plurality of divided cases accommodate the devices such as the heat exchangers 12 and 13 and a door described later, and then a fastening means such as a metal spring clip or a screw. Thus, the air conditioning unit 10 is configured as a single unit.

  The air conditioning unit 10 is arranged in a substantially central portion below the instrument panel (instrument panel) in the passenger compartment in the form shown in FIG. An air inlet portion 14 is formed on the side surface in front of the vehicle. Air blown from the blower unit described above flows into the air inlet portion 14.

  In the air conditioning case 11, an evaporator 12 is disposed at a rear portion of the vehicle immediately after the air inlet 14. The evaporator 12 is arranged in the left-right direction of the vehicle so as to cross the passage in the air-conditioning case 11 in a thin shape in the vehicle front-rear direction. As is well known, the evaporator 12 absorbs the latent heat of evaporation of the refrigerant in the refrigeration cycle from the blown air to cool the blown air.

  A heater core 13 is arranged at a predetermined interval on the downstream side of the air flow of the evaporator 12 (the lower side behind the vehicle). The heater core 13 is disposed in the air conditioning case 11 so as to be inclined toward the rear side of the vehicle. As is well known, the heater core 13 exchanges heat between hot hot water (engine cooling water) and air passing through the air conditioning case 11.

  A PTC heater 30, which is an electric heater, is disposed substantially parallel to the heater core 13 on the downstream side of the air flow of the heater core 13. The configuration of the PTC heater 30 and the arrangement form of the PTC heater 30 and the heater core 13 will be described later.

  Next, in the air passage in the air conditioning case 11, in the upper part of the heater core 13, a cold air bypass passage 15 that bypasses the heater core 13 and cool air flows, and a hot air passage that flows through the heater core 13 and flows hot air. 17 are formed.

  In each of the cold air bypass passage 15 and the hot air passage 17, the mixing ratio of the hot air heated by the heater core 13 and the PTC heater 30 and the cold air that bypasses the heater core 13 through the cold air bypass passage 15 is adjusted. A flat air mix door 16 is arranged.

  The air mix door 16 is integrally connected to a rotating shaft 16a disposed in the horizontal direction adjacent to the vicinity of the upper portion of the heater core 13, and is rotatable with the rotating shaft 16a in the vehicle vertical direction. The air mix door 16 serves as a temperature adjusting means for adjusting the temperature of air blown into the passenger compartment by adjusting the mixing ratio. Further, the rotation shaft 16a is rotatably supported by the air conditioning case 11, and one end portion of the rotation shaft 16a protrudes outside the air conditioning case 11, and is coupled to a link mechanism (not shown), so that the temperature of the air conditioner It is rotated by a control mechanism (an actuator such as a servo motor).

  In the air conditioning case 11, a wall surface 18 that extends in the vertical direction with a predetermined gap between the PTC heater 15 and the PTC heater 15 is formed integrally with the air conditioning case 11 on the downstream side of the air of the PTC heater 15. Has been. By this wall surface 18, the warm air is led upward through the warm air passage 17 immediately after the PTC heater 15.

  In the air conditioning case 11, the air that mixes the cold air and the hot air by combining the cold air from the cold air bypass passage 15 and the hot air from the hot air passage 17 is provided downstream of the air mix door 16 in the air flow. A mixing unit 20 is formed.

  In the upper part of the air conditioning case 11 at the downstream end of the air flow of the air mixing unit 20, a defroster opening 21 is formed in the front part of the vehicle so as to open upward in the vehicle front direction. The defroster opening 21 is supplied with temperature-controlled conditioned air from the air mixing unit 20 and is connected to a defroster outlet through a defroster duct (not shown). Air conditioned air is blown toward the inner surface.

  A flat plate-like defroster door 22 is installed on the upstream side of the airflow of the defroster opening 21. The defroster door 22 is a door unit that opens and closes a flow path of conditioned air flowing into the defroster opening 21. The defroster door 22 is rotatably supported by a rotating shaft 22 a disposed in the horizontal direction adjacent to the upper end of the defroster opening 21 near the upper surface of the air conditioning case 11.

  A face opening 23 is formed on the rear side of the defroster opening 21 so as to open upward. The face opening 23 is supplied with temperature-controlled air from the air mixing unit 20 and is connected to a face outlet and a side face outlet through a face duct and a side face duct (not shown). Air conditioned air is blown out from the exit and side face outlet toward the upper body of the passenger.

  A flat face door 24 is installed on the upstream side of the air flow of the face opening 23. The face door 24 is door means for opening and closing the flow path of the conditioned air flowing into the face opening 23. The face door 24 is rotatably supported by a rotating shaft 24 a disposed in the horizontal direction in the vicinity of the defroster opening 21 of the air conditioning case 11 and adjacent to the upper end of the face opening 23.

  In the air conditioning case 11, a foot ventilation path 27 is formed in a portion on the vehicle rear side above the warm air passage 17. The foot ventilation path 27 is supplied with conditioned air whose temperature is controlled from the air mixing section 20, and a foot opening 28 is formed at the air downstream end of the foot ventilation path 27.

  The foot opening 28 is connected to a front seat foot outlet and a rear seat foot outlet via a front seat foot duct and a rear seat foot duct (not shown). Air-conditioned air is blown out from the foot outlet toward the passenger's feet.

  A butterfly-like foot door 26 is installed on the upstream side of the air flow in the foot ventilation path 27. The foot door 26 is a door means that opens and closes the flow path of the conditioned air flowing into the foot ventilation path 27. The foot door 26 is rotatably supported by a rotating shaft 26a arranged in the horizontal direction at a portion below the rear end of the face opening 23 from the vehicle rear end.

  Here, the defroster door 22, the face door 24, and the foot door 26 described above are door means for switching the blowing mode, and one end portions of the rotary shafts 22a, 24a, 26a are projected to the outside of the air conditioning case 11, and are shown in the figure. It is connected to a link mechanism that does not, and is operated in conjunction by a blow mode switching mechanism (an actuator such as a servo motor).

  Next, the structure of the PTC heater 30 arrange | positioned in the air flow downstream of the heater core 13 is demonstrated. As shown in FIGS. 2A and 2B, the PTC heater 30 includes a pair of holding members 31, 32, a plurality (three in this example) of energizing heat generating portions 33, a plurality of fins 34, and a housing member. 35 and an electrical equipment section 37.

  The holding members 31 and 32 are members that support both ends of the plurality of energized heat generating portions 33. The energization heat generation part 33 is a heating element that is formed of a tube-shaped metal tube and in which a PTC element having resistance temperature characteristics is disposed, and generates heat by energizing the PTC element with electric power. In the present embodiment, a plurality (three in this example) are arranged at predetermined intervals in the vertical direction of the vehicle.

  The plurality of fins 34 are formed of thin plate fins such as aluminum having good heat transfer characteristics, and a plurality of fins 34 are fitted in the outer shape of the energization heat generating portion 33 and stacked in the horizontal direction. In addition, the fins disposed near the outer shape of the energization heat generating portion 33 are formed to be bent in an L shape and joined to the outer shape of the energization heat generation portion 33 in order to increase the contact area between the fin and the energization heat generation portion 33. ing.

  The energization heat generating portion 33 and the fin 34 formed between the pair of holding members 31 and 32 are core portions, and the air is further heated when the air that has passed through the heater core 13 passes through the core portion. .

  The housing member 35 is a resin housing formed of a heat-resistant resin material (for example, 66 nylon, polybutadiene terephthalate, etc.). The power supply system and signal system terminal portions 38 and 39 are provided therein, and the housing member 35 is provided therein. In order to accommodate the electrical component portion 37 to be disposed, it is integrally configured to be fitted to one end surface of the left holding member 31.

  Here, the terminal part 38 of the power supply system is a connector for supplying power from a battery mounted on the vehicle, and is connected to a connector of power supply wiring (not shown). Further, the signal system terminal unit 39 is a connector for performing mutual communication with a control device (not shown) for controlling the air conditioner, and is connected to a signal wiring connector (not shown).

  The electrical unit 37 is an electrical circuit that electrically connects the power supply system and signal system terminal units 38 and 39 and one end of the plurality of energization heat generation units 33, and includes at least the plurality of energization heat generation units 33. A power supply circuit is provided for selectively operating the power supply.

  Further, in order to integrally configure the PTC heater 30, as an electrical component, in addition to the power supply circuit, a drive circuit that selectively drives a plurality of energized heat generating units 33, an overheat prevention or large amount of the energized heat generating unit 33. A protection circuit for regulating the current or a control circuit for mutual communication with a control device (not shown) to the outside may be added.

  By adding at least a drive circuit, a protection circuit, and a control circuit to the electrical unit 37, the PTC heater 30 can be configured integrally. However, the provision of these electric circuits in the electrical component portion 37 tends to increase the size of the housing member 35. Further, when the housing member 35 is generally disposed outside the air conditioning case 11 and protrudes outward from the air conditioning case 11, the housing member 35 has a problem that mountability on the vehicle is lowered.

  Therefore, in this embodiment, the housing member 35 is formed so that the housing member 35 protrudes outward on one side of the air conditioning case 11 in which the heater core 13 and the PTC heater 30 are provided side by side, and the height is lowered. Specifically, as shown in FIGS. 2B and 3, the outer shape of the housing member 35 is formed in an L shape with respect to the energizing heat generating portion 33, and the heater core 13 is disposed on the short side thereof. The air conditioning case 11 is formed along one side surface.

  By the way, as shown in FIG. 3, since the piping connection part 19 for introducing hot water into the heater core 13 is provided outside the side surface of the air conditioning case 11 in which the heater core 13 is arranged, The housing member 35 is configured to be disposed on the opposite side of the pipe connection portion 19.

  Thus, the height of the housing member 35 protruding outward from the side surface of the air conditioning case 11 can be reduced, and the overall size can be increased by taking a large dimension in the depth direction (air flow direction). it can. Therefore, the electrical part 37 having the drive circuit, the protection circuit, and the control circuit can be accommodated in the housing member 35.

  Furthermore, in order to accommodate the tank portion 13a13b of the heater core 13, a convex portion 11a protruding outward may be formed on one side surface of the air conditioning case 11, as shown in FIG. In this case, the housing member 35 may be formed so as not to interfere with the convex portion 11a. More specifically, in the outer shape of the housing member 35, a concave portion 35 a may be formed along a side surface of the air conditioning case 11.

  According to the vehicle air conditioner according to the embodiment described above, the PTC heater 30 is electrically connected to the power supply and signal system terminal portions 38 and 39 and the one end portions of the plurality of energized heat generating portions 33 via the electrical equipment portion 37. The housing member 35 is integrally formed with one end of the plurality of energizing heat generating portions 33, and the housing member 35 is disposed outside the air conditioning case 11 on the side of the heater core 13 facing the pipe connecting portion 19. It is configured to be arranged.

  According to this, the heater core 13 and the PTC heater 30 are arranged in the air conditioning case 11 generally in parallel along the wind flow direction. In other words, the pipe connection portion 19 of the heater core 13 is arranged on one side of the air conditioning case 11, but an empty space is formed on one side of the air conditioning case 11 on the opposite side of the pipe connection 19. .

  Therefore, in the present embodiment, on one side surface of the air conditioning case 11 on the opposite side of the pipe connection portion 19, from one side surface of the air conditioning case 11 where the energizing heat generating portion 33 of the PTC heater 30 is disposed, and one side surface thereof. By forming the housing member 35 so as to extend along one side surface of the air conditioning case 11 in which the heater core 13 is arranged, the housing member 35 having a low protruding height outward from the side surface side of the air conditioning case 11 was used. A PTC heater 30 can be formed. Thereby, the mounting property to the vehicle of the air-conditioning case 11 can be improved.

  Further, the air conditioning case 11 is formed with convex portions 11a protruding outward so as to accommodate the tank portions 13a and 13b of the heater core 13 on both side surfaces in order to secure a predetermined air passage with low ventilation resistance. In some cases.

  Therefore, as in the present embodiment, the housing member 35 is formed with a concave portion 35a that does not interfere with the convex portion 11a of the air conditioning case 11, so that the housing member 35 having a low protruding height outward from the side surface of the air conditioning case 11 can be obtained. The used PTC heater 30 can be formed.

  Further, the housing member 35 is formed in a substantially L-shaped outer shape, and the short side thereof is arranged along the upstream direction of the air flow in the air conditioning case 11, so that the housing member 35 is substantially L-shaped. By forming it in a shape, it is possible to utilize an empty space on one side of the air conditioning case 11 on the opposite side of the pipe connecting portion 19.

  By the way, since the downstream side of the air flow of the heater core 13 is the rear side of the vehicle in the air conditioning case 11, there is a limit to increasing the total length of the short side, but in the upstream direction of the air flow in the air conditioning case 11 There is a space where the total length can be increased.

  The electrical component section 37 includes at least one of a drive circuit, a protection circuit, and a control circuit related to the plurality of energization heat generating sections 33 in the housing member 35, and thus the circuit is provided in the electrical component section 37, thereby Although the physique becomes large, as described above, the PTC heater 30 using the housing member 35 with a low protruding height outward from the side surface of the air conditioning case 11 can be formed. Thereby, the air conditioning case 11 whole can be reduced in size. Therefore, it is suitable for an air conditioner using the PTC heater 30 having the above circuit.

(Other embodiments)
In the above embodiment, the tank portions 13a and 13b of the heater core 13 are disposed in the air conditioning case 11 so as to face the air conditioning case 11 in the horizontal direction. May be arranged in the air conditioning case 11 so as to face the air conditioning case 11 in the vertical direction.

  In this case, the pipe connection part 19 is provided on one side of the air conditioning case 11, but the opposite side of the pipe connection part 19 is an empty space. A projecting portion 11 a is formed on one side of the air conditioning case 11 on the opposite side of the pipe connection portion 19 in order to hermetically seal the gap between the end of the heater core 13 and the side surface of the air conditioning case 11.

  Therefore, by forming the recess 35 a in the housing member 35, it is possible to form the PTC heater 30 using the housing member 35 that protrudes outward from the side surface side of the air conditioning case 11.

  Further, in the above embodiment, the electrical unit 37 is formed by the drive circuit, the protection circuit, and the control circuit related to the plurality of energization heat generating units 33, but at least an electrical circuit related to the power supply system is formed and the electrical system related to the signal system is formed. A circuit may be provided outside.

  Further, in the above embodiment, the three energized heat generating portions 33 are arranged, but a single energized heat generating portion 33 may be arranged. Moreover, you may comprise so that three or more several electricity_generation heat | fever generating parts 33 may be arranged. Further, although the PTC heater 30 is configured by using the PTC element for the energization heat generation portion 33, the PTC heater 30 using the PTC element is not limited, and an electric heater using a heating wire for the energization heat generation portion 33 may be used.

It is a longitudinal section showing the whole air conditioning unit 10 composition of a vehicle air conditioner in one embodiment of the present invention. (A) in one Embodiment of this invention is a front view which shows schematic structure of the PTC heater 30, (b) is a top view shown to (a). It is a fragmentary sectional view showing the arrangement form of PTC heater 30 to air-conditioning case 11 in one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Air-conditioning case 11a ... Convex part 13 ... Heater core (heat exchanger for heating)
19 ... Piping connection part 30 ... PTC heater (electric heater)
33 ... energization heat generation part 35 ... housing member 35a ... concave part 37 ... electrical equipment part 38 ... terminal part, power supply system terminal part 39 ... terminal part, signal system terminal part

Claims (2)

An air conditioning case (11) forming an air passage;
A heating heat exchanger (13) for heating the air passing through the air conditioning case (11);
In the vehicle air conditioner, comprising: an electric heater (30) having an energized heat generating part (33) that heats the air that is disposed downstream of the air flow of the heat exchanger for heating (13) and passes therethrough;
The heating heat exchanger (13) is:
The pipe connection part (19) is arranged on one side of the air conditioning case (11) so as to protrude outward,
The air conditioning case (11) is formed with a convex portion (11a) protruding outward so as to accommodate the heating heat exchanger (13) on the opposite side of the pipe connection portion (19),
The electric heater (30)
An electrical component (37) for operating the energization heat generation unit (33);
E Bei a housing member (35) for accommodating said electrical equipment section has at least the power supply system terminal unit of the (38, 39) and (37) therein,
Thereby electrically connected via the electrical part (37) between one end portion of the heat-generating portion and the terminal portion (38, 39) (33), said housing member (35) is the electric heating unit (33) is one end and integrally formed of, and is configured such that the housing member (35) is arranged outside of the air conditioning case of the opposite side (11) of the pipe connection portion (19) ,
The housing member (35) is substantially L-shaped from the one end portion of the energizing heat generating portion (33) disposed on the downstream side of the air flow of the heating heat exchanger (13). It is arranged along the upstream direction of the air flow inside, and is formed so as to extend along one side surface of the air conditioning case (11) where the heat exchanger for heating (13) is arranged. 11) forming the housing member (35) with a low protruding height outward on the side surface side,
The vehicle air conditioner, wherein the housing member (35) is formed with a recess (35a) that does not interfere with the protrusion (11a) formed on one side of the air conditioning case (11) . The electrical part (37), according to claim 1, wherein the driving circuit according to the electric heating unit (33), the protection circuit, and the at least one control circuit configured in said housing member (35) in Vehicle air conditioner.

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