JP2015166215A - On-vehicle heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle heating device that can suitably blow hot air to an area around legs of a seated person when installed below a seat.SOLUTION: An on-vehicle heating device 1A includes: a suction guide portion 3 having a suction port before a seat cushion and serving as a suction passage of outside air; an air blowing portion 4 for sucking outside air to inside through the suction guide portion 3; a hot air formation portion 5 having a heater therein to form hot air by heating the air blown from the air blowing portion 4; a blowout portion 6 with right and left blowout portions 6b, 6a and a central blowout portion 6c for blowing out the hot air from the hot air formation portion 5; and a blowout direction adjustment portion for vertically adjusting a direction of the hot air blown out from the right and left blowout portions 6b, 6a on the basis of a temperature of the hot air.

Description

  The present invention relates to a heating device mounted on a vehicle such as an automobile, and more particularly to an in-vehicle heating device installed below a vehicle seat.

  2. Description of the Related Art Conventionally, as a heating device (on-vehicle heating device) mounted on a vehicle such as an automobile, a type that is installed below a vehicle seat (seat) and heats a user's feet is known.

  For example, Patent Document 1 discloses a vehicle seat that can cool and heat the feet of a user sitting on the seat with small energy. The vehicle seat includes a blower provided on a seat cushion or a seat back, an intake duct and an exhaust duct extending from the blower, and a heat supply device. The air intake duct has an air intake opening that opens to the front of the seat cushion, the air exhaust duct has an air exhaust opening that opens to the front of the seat cushion, and the heat supply device heats the air flowing from the air intake opening to the air exhaust opening. Or supply cold energy.

JP 2011-254882 A

  However, in the vehicle seat disclosed in Patent Document 1, the intake port is provided in the front center portion of the seat cushion, and the exhaust ports are provided on the left and right sides of the intake port. For this reason, when heating the feet of the seated occupant, depending on the direction of the warm air, it may directly hit the lower part of the knee of the seated occupant, and may cause low-temperature burns especially when a woman wearing a skirt is used for a long time.

  The present invention has been made to solve such a problem, and provides an in-vehicle heating device capable of suitably sending warm air to a seated person's feet when installed below a seat. For the purpose.

  An in-vehicle heating device according to the present invention is an in-vehicle heating device installed in front of a lower portion of a seat cushion, which is a seat seating portion of a vehicle, in order to solve the above-described problem, and an intake port is provided in front of the seat cushion. A warm air that forms a warm air by heating the air blown from the blower unit by providing a suction guide part serving as an outside air suction passage, a blower part that sucks the outside air through the suction guide part, and a heater inside A forming part, a left and right blowing part that blows out the warm air from the warm air forming part, a blowing part provided with a central blowing part, and a direction of the warm air that blows out from the left and right blowing parts based on the temperature of the warm air A blowing direction adjusting section that adjusts up and down.

  According to the above configuration, since the direction of the warm air blown from the left and right outlets is adjusted based on the temperature of the warm air, the warm air can be suitably blown to the entire feet of the user seated on the seat cushion. It becomes.

The in-vehicle heating device having the above-described configuration includes a temperature detection unit that detects the temperature of the hot air, and the blowing direction adjustment unit blows out the hot air when the detected temperature is lower than a predetermined threshold. If the detected temperature is higher than a predetermined threshold, the direction in which the warm air is blown out may be adjusted downward. According to this configuration, it is possible to eliminate the concern of low-temperature burns during long-time use.

  Moreover, in the vehicle-mounted heating device having the above-described configuration, the blowing direction adjusting unit may be configured to adjust the direction of warm air blown from the left and right blowing units with a spring made of a shape memory alloy and a bias spring. According to this structure, warm air can be suitably blown to the seated person's feet with a simpler structure.

  Moreover, in the vehicle-mounted heating device having the above-described configuration, the blowing direction adjusting unit may be configured to adjust the direction of the warm air blown from the left and right blowing units with a bimetal. According to this structure, warm air can be suitably blown to the seated person's feet with a simpler structure.

  Further, in the on-vehicle heating device having the above-described configuration, when the power is turned on, the left and right blowing portions are directed in a direction corresponding to a calf in a seated state of a seated person on which the on-vehicle heating device is installed, and the central blowing portion is The configuration may be directed to the floor surface in the vehicle interior.

  In this invention, when it installs in the downward direction of a sheet | seat by the above structure, there exists an effect that the vehicle-mounted heating apparatus which can ventilate warm air suitably to a seated person's step can be provided.

The schematic diagram which shows an example of the heating state of the seated person's step by the vehicle-mounted heating apparatus which concerns on Embodiment 1 of this invention. FIG. 2 is a cross-sectional view showing a state in which the left and right outlets 6a and 6b blow out warm air upward, showing an example of the configuration of the in-vehicle heating device shown in FIG. In the figure, (b) is a cross-sectional view along the AA plane shown in (a). Front view of the in-vehicle heating device shown in FIG. Sectional drawing in the BB surface which shows the state which the right-and-left blowing parts 6a and 6b of the vehicle-mounted heating apparatus shown in FIG. Sectional drawing which shows an example of a structure of the vehicle-mounted heating apparatus which concerns on Embodiment 2 of this invention, and the right-and-left blowing parts 6a and 6b blow off warm air upwards, (a) is B- shown to (b). It is sectional drawing in B surface, (b) is sectional drawing in the AA surface shown to (a). Sectional drawing in the BB surface which shows the state which the right-and-left blowing parts 6a and 6b of the vehicle-mounted heating apparatus shown in FIG. 5 and 6 are enlarged cross-sectional views showing the blowing direction of hot air from the blowing unit 6 of the in-vehicle heating device shown in FIGS. 5 and 6, wherein (a) is the left and right blowing units 6 a and 6 b shown in FIG. It is a cross-sectional enlarged view which shows a state, (b) is a cross-sectional enlarged view which shows the state from which the right-and-left blowing parts 6a and 6b of FIG. Sectional drawing which shows an example of a structure of the vehicle-mounted heating apparatus which concerns on Embodiment 3 of this invention, and the right-and-left blowing parts 6a and 6b blow off warm air upwards, (a) is B- shown to (b). It is sectional drawing in B surface, (b) is sectional drawing in the AA surface shown to (a). Sectional drawing in the BB surface which shows the state which the right-and-left blowing parts 6a and 6b of the vehicle-mounted heating apparatus shown in FIG. 8 and 9 are enlarged cross-sectional views showing the blowing direction of hot air from the blowing unit 6 of the in-vehicle heating device shown in FIGS. 8 and 9, wherein (a) blows the warm air upward by the left and right blowing units 6a and 6b shown in FIG. 8 (a). It is a cross-sectional enlarged view which shows a state, (b) is a cross-sectional enlarged view which shows the state from which the right-and-left blowing parts 6a and 6b of FIG. The schematic diagram which shows an example of the heating state of a seated person's step by the vehicle-mounted heating apparatus shown in FIG.2, FIG.5, FIG.8 The schematic diagram which shows an example of the heating state of a seated person's step by the vehicle-mounted heating apparatus shown in FIG.4, FIG.6, FIG.9

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout the drawings, and redundant description thereof is omitted.

(Embodiment 1)
[Configuration example of in-vehicle heating system]
First, an example of the configuration of the in-vehicle heating device 1A according to the first embodiment will be specifically described with reference to FIGS. As shown in FIG. 1, in-vehicle heating device 1 </ b> A according to the present embodiment is attached to the lower front side of seat cushion 31 of seat 30 installed in the interior of vehicle 100.

  First, the seat 30 will be described. The seat 30 shown in FIG. 1 includes a seat cushion 31, a seat back 32, and the like. The seat cushion 31 serves as a seating portion and the seat back 32 serves as a backrest portion. The seat back 32 is attached to the seat cushion 31 via a reclining device (not shown), and the inclination angle of the seat back 32 can be changed.

  The in-vehicle heating device 1 </ b> A includes an intake guide portion 3, a blower portion 4, a hot air forming portion 5, a blowout portion 6, and the like configured in the housing 2 as shown in FIG. That is, the in-vehicle heating device 1A has a structure unitized by the housing 2, and operates only by supplying power from the outside. Therefore, in addition to the case where the vehicle 100 is previously installed on the seat 30 when the vehicle 100 is shipped, if there is a space below the seat cushion 31 of the seat 30, it can be installed on the seat 30 by retrofitting. Furthermore, in addition to the seat 30 on which the seated person 20 who is the driver of the vehicle 100 shown in FIG.

  As shown in FIG. 2 (a), the suction guide portion 3 constituting the suction passage is located in the upper stage, and the air blowing portion 4, the hot air forming portion 5, and the blowing portion 6 are located in the lower stage across the partition wall 2b. Has been placed. The suction guide portion 3 constitutes a suction passage having a square cross section, and is provided so as to connect the front of the in-vehicle heating device 1A (that is, the front of the seat cushion 31) and the blower portion 4. Thereby, the in-vehicle heating device 1A can easily suck the air flow (returned hot air) indicated by the block arrow F1 in FIG. 1 from the suction port 3a from the front of the seat cushion 31, so that the heating efficiency can be improved. . That is, since air with high temperature tends to move upward, it is more warm air when the blowing section 6 is arranged at the lower stage, hot air is blown out to the feet of the seated person 20, and the suction port 3a is arranged at the upper stage for inhalation. The flow can be formed more efficiently.

  Note that the specific shape of the suction guide portion 3 is not limited to the shape shown in FIG. 2, and the side surface may be opened in addition to the front surface, or other configurations known in the field of introducing an air flow. May be adopted.

  The blower section 4 is provided with a motor 4a and a fan 4b, and is disposed on the opposite side of the suction passage of the suction guide section 3 from the suction port 3a and at a lower stage with a partition wall 2b interposed therebetween. The fan 4b is fixed to the rotating shaft of the motor 4a, and is rotated by the motor 4a to form an air flow. Here, an opening 2c is provided in the partition wall 2b in order to send the outside air that has passed through the suction passage to the lower blowing section 4. The position and shape of the opening 2 c are formed so that the intake air is optimally performed according to the shape of the blower 4.

  The shape of the air blowing unit 4 in the present embodiment is a substantially disk shape corresponding to the shape of the fan 4b and the motor 4a accommodated therein, and a part of the shape protrudes and communicates with the hot air forming unit 5. It is connected to the. In addition, the specific structure of the ventilation part 4 is not specifically limited, For example, what is necessary is just the structure by which the well-known motor 4a and the fan 4b are provided in the well-known resin-made housing | casing.

  The hot air forming unit 5 is provided at a position closer to the blowing unit 6 than the blowing unit 4 (a position downstream from the blowing unit 4 and upstream from the blowing unit 6 with respect to the blowing direction), Air blown from the blower unit 4 is heated to form hot air. In addition, heaters 5 a, 5 b, and 5 c that extend in the width direction of the seat cushion 31 are provided inside the warm air forming unit 5. Therefore, the shape of the warm air forming portion 5 is a flat shape that extends in the width direction of the seat cushion 31.

  The heaters 5 a, 5 b, 5 c are composed of PTC heaters, ceramic heaters, etc., are substantially rod-shaped as shown in FIG. 2, and are provided in the hot air forming unit 5 in a state intersecting with the blowing direction from the blowing unit 4. It has been. Further, the air flow generated from the air blower 4 by providing a rectifying plate at a position on the air blower 4 side of the heater 5a, 5b, 5c in the warm air forming part 5 (position on the upstream side when the air blow direction is used as a reference). May be directed toward the heaters 5a, 5b, 5c. In addition, the specific structure of the warm air formation part 5 is not specifically limited, For example, what is necessary is just the structure by which the well-known rod-shaped heater 5a, 5b, 5c is provided in a well-known resin housing.

  Since the hot air forming part 5 is adjacent to the suction passage of the suction guide part 3 via the partition wall 2b, the outside air flowing through the suction path is warmed by a part of the heat generated by the heaters 5a, 5b, 5c. Thereby, the inhalation temperature of the outside air sucked into the blower unit 4 rises, and the overall thermal efficiency can be improved.

  The blowing unit 6 is a member that is located on the downstream side of the hot air forming unit 5 and that blows the hot air from the hot air forming unit 5 forward of the seat cushion 31. In this Embodiment, the inside becomes a warm air flow path which distribute | circulates warm air, and the left end part 6a used as the blower outlet which blows out warm air, the right blowing part 6b, and the central blowing part 6c in the front end (The left outlet 6a and the right outlet 6b are collectively referred to as the left and right outlets 6a and 6b).

  In the blowing part 6, since the warm air from the warm air forming part 5 is divided and sent to the left and right blowing parts 6a, 6b and the central blowing part 6c, the left blowing guide part 7a partitioned by the partition plates 8a, 8b, the right blowing A guide portion 7b and a central blowing guide portion 7c are provided on the upstream side of each (the left blowing guide portion 7a and the right blowing guide portion 7b are collectively referred to as left and right blowing guide portions 7a and 7b).

  As shown in FIG. 3, the left outlet 6a, the central outlet 6c, and the right outlet 6b are arranged in a straight line on the left side, the center, and the right side of the in-vehicle heating device 1A, respectively, as shown in FIG. Hot air F7, F9, and F8 are blown out.

  Further, as shown in FIG. 2A, the left blowing portion 6a, the central blowing portion 6c, and the right blowing portion 6b slightly protrude in the forward direction of the seat cushion 31 (in the direction of blowing warm air) from the suction port 3a. Are arranged as follows. By comprising in this way, it can prevent that the warm air from the blower outlet of a slit-shaped opening is suck | inhaled as it is from the inlet 3a.

Furthermore, the left blowing part 6a, the central blowing part 6c, and the right blowing part 6b are each configured to be rotatable with respect to the casing 2, and hot air F7, F9, and F8 are supplied from the slit-shaped opening. The blowing direction can be changed independently up and down. For example, the left blowing portion 6a is pivotally supported by the casing 2 and the partition plate 8a, the central blowing portion 6c is pivotally supported by the partition plate 8a and the partition plate 8b, and the right blowing portion 6b is pivotally supported by the partition plate 8b and the casing 2. This rotation angle can be, for example, about 30 ° upward to 45 ° downward with respect to the horizontal direction of the housing 2, but even if the rotation angle is changed, the flow of warm air is not hindered. The upstream sides of the left and right outlets 6a and 6b and the central outlet 6c are greatly opened.

  A temperature sensor 9 for detecting the temperature of the hot air from the hot air forming unit 5 is installed in the central blowing guide part 7c. In FIG. 2 (b), the temperature sensor 9 is attached to the central blowing guide part 7c, but is attached to any other position as long as the temperature of the hot air from the hot air forming part 5 can be measured. May be.

  Lever 11a, 11b which provided the long hole is being fixed to the rotating shaft 10a, 10b by the side of the housing | casing 2 of right-and-left blowing part 6a, 6b. In addition, cranks 12a and 12b each having a pin attached to the tip are fixed to the rotation shafts of the servo motors 13a and 13b fixed to the housing 2, and the pins are inserted into the elongated holes of the levers 11a and 11b, respectively. Yes. When the rotation shafts of the servo motors 13a and 13b rotate, the rotation shafts 10a and 10b rotate by pushing the levers 11a and 11b up and down while the pins attached to the cranks 12a and 12b slide through the elongated holes, and the left and right blowouts The rotation angles of the parts 6a and 6b are changed.

  Furthermore, in this embodiment, the vehicle-mounted heating device 1A includes a control unit (not shown) in order to control the rotation angles of the left and right blowing units 6a and 6b. The control unit (not shown) receives the temperature of the hot air detected by the temperature sensor 9 and compares it with a predetermined threshold value. When the temperature of the hot air becomes higher than a predetermined threshold, the control unit (not shown) operates the servo motors 13a and 13b to rotate the left and right blowing units 6a and 6b to change the direction in which the hot air is blown out. Adjust downward (in the direction of the vehicle floor).

  In the in-vehicle heating device 1A according to the present embodiment, the left and right outlets 6a and 6b are rotationally controlled by the temperature sensor 9, the levers 11a and 11b, the cranks 12a and 12b, the servo motors 13a and 13b, and a control unit (not shown). Therefore, these are collectively referred to as a blowing direction adjusting unit. The operation of rotating the left and right outlets 6a and 6b will be described in detail later.

[Operation example of in-vehicle heating system]
Next, an example of the operation of heating the feet of the seated person by the in-vehicle heating device 1A will be specifically described with reference to FIGS. 4, 11, and 12 in addition to FIGS.

  First, when the operation of the in-vehicle heating device 1A is started by operating an operation unit (not shown) provided in the vehicle 100 such as an automobile, the fan 4b is rotated by the motor 4a of the air blowing unit 4 and the air flow Is formed. As indicated by the block arrows F1 → F2 → F3 in FIG. 2, an air flow that flows from the blower 4 toward the hot air forming unit 5 is formed. This airflow flows so as to spread from the blower 4 in the width direction of the hot air forming unit 5. As shown in FIG. 2 (b), the hot air forming unit 5 includes rod-shaped heaters 5a, 5b, and 5c that intersect in the width direction (orthogonal in FIG. 2 (b)). The warm air is warmed by 5b and 5c, and flows from the warm air forming portion 5 toward the blowing portion 6 as indicated by the block arrows F4, F6, and F5.

  Here, since the warm air formation part 5 is adjacent to the suction passage of the suction guide part 3 through the partition 2b, generation | occurrence | production of a heat loss can be suppressed. Specifically, for example, in the case of a vehicle seat disclosed in Patent Document 1, an exhaust duct is connected to the front shield by connecting an exhaust duct from a blower. Here, since the heat supply device is provided in the exhaust duct, the heat energy from the heat supply device escapes to the surroundings through the exhaust duct before reaching the front shield (the front surface of the seat cushion). This causes heat loss and reduces heating efficiency.

On the other hand, in the present embodiment, since the hot air forming unit 5 is adjacent to the suction passage of the suction guide unit 3 through the partition wall 2b, a part of the heat generated by the heaters 5a, 5b, and 5c. The outside air flowing through the suction passage is warmed. Thereby, the suction temperature of the outside air sucked into the blower 4 is increased, and the overall heating efficiency can be improved.

  Hot air from the hot air forming part 5 flows to the left and right blowing guide parts 7a and 7b and the central blowing guide part 7c of the blowing part 6, and is sent to the left and right blowing parts 6a and 6b and the central blowing part 6c, respectively. As described above, the blowout portion 6 is provided with left and right blowout portions 6a and 6b and a central blowout portion 6c for blowing warm air to the front surface of the seat cushion 31, as shown in FIG. The left and right blow-out portions 6a and 6b and the central blow-out portion 6c are each formed with a slit-shaped opening that extends in the width direction. Therefore, as shown by the block arrows F7, F8, and F9 in FIG. 2, the blow-out portion 6 starts from the position below the suction port 3a in the state where the warm air is widened in the width direction of the seat cushion 31. Can be blown out.

  Thereby, the warm air (block arrows F7, F8, F9) from the left and right blowing parts 6a, 6b and the central blowing part 6c blown forward is blown out near the calf and the feet of the seated person 20. Thereafter, the warm air descends at the toes of the seated person 20 as shown by the block arrow in FIG. 1, hits the front dash lower panel 50, rises, and turns backward at the lower side of the instrument panel 60. As shown by the block arrow F1, the air flows from obliquely upward toward the suction port 3a. As a result, a circulation flow from the bottom to the top is formed at the feet of the seated person 20, so that the occurrence of temperature unevenness is effectively avoided in the entire feet of the seated person 20 seated on the seat cushion 31, It becomes possible to blow warm air suitably.

  In addition, since the air flow that warms the feet of the seated person 20 is sucked in from the suction port 3a and heated again by the hot air forming unit 5 and blown out from the blowing unit 6 due to the formation of the circulating flow, efficient heating is achieved. It becomes possible.

  Here, since the left and right outlets 6a and 6b are configured to be rotatable so that the direction of the outlets can be changed up and down, the outlets of the left and right outlets 6a and 6b are horizontal as shown in FIG. It can be directed more relatively upward. On the other hand, the outlet of the central outlet 6c is fixed relatively downward from the horizontal direction.

  Thereby, the warm air (block arrows F7, F8) blown forward from the left and right blowing parts 6a, 6b is blown in the direction corresponding to the calf of the seated person 20, and the warm air (block) from the central blowing part 6c. The arrow F9) is blown out toward the floor surface 40 in the vehicle interior.

  By setting the direction in which the warm air from the left and right outlets 6a and 6b and the central outlet 6c is blown out as described above, a rapid heating effect for the seated person 20 can be obtained particularly at the start of heating. That is, the warm air from the left and right outlets 6a and 6b (block arrows F7 and F8) directly warms the calf of the seated person 20 to obtain a rapid heating effect, and the hot air from the central outlet 6c (block arrow F9). ) Warms the feet of the occupant 20.

  At this time, if hot air is blown out toward the calf of the seated person 20 for a long time, especially when the woman wearing the skirt is the seated person 20, the warm air hits directly without going through the clothes and causes low-temperature burns. I am concerned about doing it.

  Therefore, the rotation angle of the left and right blowing parts 6a and 6b is changed by the servo motors 13a and 13b to change the direction in which the warm air is blown.

That is, at the start of heating, in order to obtain a rapid heating effect by directly heating the calves, the outlets of the left and right outlets 6a and 6b are relatively above the horizontal direction as shown in FIG.
The warm air (block arrows F7 and F8) is blown out from the left and right blow-out parts 6a and 6b, adjusted in the direction corresponding to the calf of the seated person 20. On the other hand, the outlet of the central outlet 6c is fixed so as to blow warm air (block arrow F9) relatively downward (in the direction of the floor surface 40 in the vehicle interior) from the horizontal direction. Thereby, a circulating flow as shown in FIG. 11 is formed.

  The temperature sensor 9 attached to the central blowing guide part 7c detects the temperature of the hot air, and when a control unit (not shown) receives that the temperature of the hot air has reached a predetermined threshold value or more, A control unit (not shown) operates the servo motors 13a and 13b. Then, the rotation shafts 10a and 10b of the left and right outlets 6a and 6b are rotated so that the outlets of the left and right outlets 6a and 6b are relatively lower than the horizontal direction (as shown in FIG. 40 direction). On the other hand, the outlet of the central outlet 6c is fixed so as to blow warm air (block arrow F9) relatively downward (in the direction of the floor surface 40 in the vehicle interior) from the horizontal direction. Thereby, a circulating flow as shown in FIG. 12 is formed.

  Here, the temperature serving as the predetermined threshold can be set to, for example, 70 ° C., but may be a temperature other than that and may be set by the seated person 20.

  Thereby, the warm air is not blown out toward the calf of the seated person 20 for a long time, and the concern that the seated person 20 causes the low temperature burn is eliminated. In addition, after obtaining a rapid heating effect for the seated person 20, the warm air from the left and right blowing parts 6a, 6b and the central blowing part 6c is blown out from the floor surface 40 toward the feet of the seated person 20, and the seated person 20 The area around the foot of the is warmed stronger and continuously.

(Embodiment 2)
In the in-vehicle heating device 1A according to the first embodiment, in order to rotate the left and right outlets 6a and 6b, the temperature of the hot air is detected by the temperature sensor 9 and the servo motors 13a and 13b are operated. The second embodiment is different in that it is rotated by a spring made of a shape memory alloy and a bias spring.

  Specifically, as shown in FIG. 5, the in-vehicle heating device 1 </ b> B according to the second embodiment is the same as the in-vehicle heating device 1 </ b> A according to the first embodiment with respect to the basic configuration, One ends of the shape memory alloy springs 14a and 14b are attached to the sides of the portions 6a and 6b close to the left and right ends of the casing 2, and the other ends are fixed to the partition walls 2b of the left and right blowing guide portions 7a and 7b, respectively.

  Also, one end of each of the bias springs 15a and 15b is attached to the side of the left and right outlets 6a and 6b close to the partition plates 8a and 8b, and the other end is fixed to the casing 2 of the left and right outlet guides 7a and 7b, respectively. . With this configuration, the shape memory alloy springs 14a and 14b bias the outlets of the left and right outlets 6a and 6b so as to rotate downward. Conversely, the bias springs 15a and 15b urge the air outlets of the left and right outlets 6a and 6b to rotate upward.

  At normal temperature, the force of the bias springs 15a and 15b is superior to the shape memory alloy springs 14a and 14b, respectively, and the outlets of the left and right outlets 6a and 6b are compared in the horizontal direction as shown in FIGS. 5 (a) and 7 (a). Turn upwards. Thereby, as shown in FIG. 11, at the start of heating, the calf can be directly warmed to obtain a rapid heating effect. On the other hand, the air outlet of the central outlet 6c is fixed so that warm air (block arrow F9) is blown relatively downward (in the direction of the floor 40 in the vehicle interior) from the horizontal direction, and the vicinity of the feet of the seated person 20 is also warmed. It is done.

When time elapses after the on-vehicle heating device 1B is operated, the shape memory alloy springs 14a and 14b are warmed by the hot air indicated by the block arrows F4 and F5, respectively. Above the predetermined temperature, the shape memory alloy springs 14a and 14b return to the original memorized shape, so that the force of the shape memory alloy springs 14a and 14b wins, and as shown in FIG. 6 and FIG. The outlets of the outlets 6a and 6b are adjusted relatively downward from the horizontal direction. Thereby, the warm air is not blown out toward the calf of the seated person 20 for a long time, and the concern that the seated person 20 causes the low temperature burn is eliminated. Moreover, after obtaining the rapid heating effect with respect to the seated person 20, as shown in FIG. 12, the warm air of the left and right blowing parts 6a, 6b and the central blowing part 6c is directed from the floor surface 40 toward the feet of the seated person 20. The area near the feet of the seated person 20 is more strongly and continuously warmed.

  When the power supplied to the in-vehicle heating device 1B is turned off by operating an operation unit (not shown) or by a key operation of the vehicle, the temperature of the shape memory alloy springs 14a and 14b returns to the normal temperature, and the bias The force of the springs 15a and 15b wins and the outlets of the left and right outlets 6a and 6b are returned relatively upward from the horizontal direction.

  In this manner, by combining the shape memory alloy springs 14a and 14b and the bias springs 15a and 15b, it can be operated as a simple actuator for rotating the left and right blowing portions 6a and 6b. In other words, the shape memory alloy springs 14a and 14b and the bias springs 15a and 15b can constitute a blowing direction adjusting unit.

  Therefore, with this configuration, in the in-vehicle heating device 1B according to the second embodiment, the temperature sensor 9, the levers 11a and 11b, the cranks 12a and 12b, the servo motors 13a and 13b, and the control of the in-vehicle heating device 1A according to the first embodiment. A part (not shown) becomes unnecessary. Therefore, warm air can be suitably blown to the seated person's feet with a simpler configuration.

(Embodiment 3)
In the in-vehicle heating device 1A according to the first embodiment, in order to rotate the left and right outlets 6a and 6b, the temperature of the hot air is detected by the temperature sensor 9 and the servo motors 13a and 13b are operated. The third embodiment is different in that it is rotated by bimetal.

  Specifically, as shown in FIG. 8, the in-vehicle heating device 1 </ b> C according to the third embodiment is the same as the in-vehicle heating device 1 </ b> A according to the first embodiment with respect to the basic configuration, The inner peripheral ends of the bimetal springs 16a and 16b wound around the rotating shafts 10c and 10d of the portions 6a and 6b are respectively fixed, and the outer peripheral ends of the bimetallic springs 16a and 16b are fixed to the housing 2, respectively. ing.

  The bimetal springs 16a and 16b are attached so that the outlets of the left and right outlets 6a and 6b are relatively upward from the horizontal direction as shown in FIGS. 8A and 10A at room temperature. Thereby, as shown in FIG. 11, at the start of heating, the calf can be directly warmed to obtain a rapid heating effect. On the other hand, the air outlet of the central outlet 6c is fixed so that warm air (block arrow F9) is blown relatively downward (in the direction of the floor 40 in the vehicle interior) from the horizontal direction, and the vicinity of the feet of the seated person 20 is also warmed. It is done.

  When the in-vehicle heating device 1C is operated, the bimetal springs 16a and 16b are respectively warmed by warm air indicated by the block arrows F4 and F5. Then, the rotation shafts 10c and 10d are gradually rotated, and the outlets of the left and right outlets 6a and 6b are adjusted relatively downward from the horizontal direction as shown in FIGS. 9 and 10B. Thereby, the warm air is not blown out toward the calf of the seated person 20 for a long time, and the concern that the seated person 20 causes the low temperature burn is eliminated. Moreover, after obtaining the rapid heating effect with respect to the seated person 20, as shown in FIG. 12, the warm air of the left and right blowing parts 6a, 6b and the central blowing part 6c is directed from the floor surface 40 toward the feet of the seated person 20. The area near the feet of the seated person 20 is more strongly and continuously warmed.

  When the power supplied to the in-vehicle heating device 1C is turned off by operating an operation unit (not shown) or by key operation of the vehicle, the temperatures of the bimetal springs 16a and 16b return to room temperature, and the left and right outlets 6a , 6b is returned relatively upward from the horizontal direction.

  Thus, the bimetal springs 16a and 16b operate as a simple actuator for rotating the left and right blowing portions 6a and 6b. That is, the blowing direction adjusting portion can be configured by the bimetal springs 16a and 16b.

  Therefore, with this configuration, in the in-vehicle heating device 1C according to the third embodiment, the temperature sensor 9, the levers 11a and 11b, the cranks 12a and 12b, the servo motors 13a and 13b, and the control of the in-vehicle heating device 1A according to the first embodiment. A part (not shown) becomes unnecessary. Therefore, warm air can be suitably blown to the seated person's feet with a simpler configuration.

  As mentioned above, although the vehicle-mounted heating apparatus which concerns on 1 aspect of this invention was demonstrated based on Embodiment 1-3, this invention is not limited to these embodiment. Unless it deviates from the meaning of this invention, the form which carried out various deformation | transformation which those skilled in the art can think to this embodiment, or the structure constructed | assembled combining the component in different embodiment is also contained in the scope of the present invention. .

  In the first to third embodiments, the suction guide portion 3 constituting the suction passage is located in the upper stage, and the air blowing portion 4, the hot air forming portion 5, and the blowing portion 6 are located in the lower stage across the partition wall 2b. Arranged. Not only this structure but the structure which replaced the upper stage and the lower stage can also be made. For example, the air blowing unit 4, the hot air forming unit 5, and the blowing unit 6 may be arranged in the upper stage inside the housing 2, and the suction guide unit 3 may be arranged in the lower stage.

  In the first to third embodiments, the vehicle-mounted heating devices 1A to 1C are installed in the space below the seat cushion 31. In addition to this configuration, when the seat cushion 31 can be processed, an embodiment in which an opening is provided on the front surface of the seat cushion 31 and a part or the whole of the in-vehicle heating devices 1A to 1C is embedded in the seat cushion 31 is also installed. Are included within the scope of the present invention.

  The in-vehicle heating device of the present invention has an effect that it is possible to blow warm air suitably on the feet of a seated person, and can be used widely and suitably in the field of a heating device attached to a vehicle seat such as an automobile.

1A, 1B, 1C In-vehicle heating device 2 Housing 2b Partition wall 2c Opening 3 Suction guide part 3a Suction port 4 Blower part 4a Motor 4b Fan 5 Hot air forming part 5a, 5b, 5c Heater 6 Blowing part 6a Left blowing part 6b Right blowing Part 6c Central outlet part 7a Left outlet guide part 7b Right outlet guide part 7c Central outlet guide part 8a, 8b Partition plate 9 Temperature sensor 10a, 10b, 10c, 10d Rotating shaft 11a, 11b Lever 12a, 12b Crank 13a, 13b Servo Motors 14a, 14b Shape memory alloy springs 15a, 15b Bias springs 16a, 16b Bimetallic springs 20 Seated person 30 Seat 31 Seat cushion 32 Seat back 40 Floor 50 Dash lower panel 60 Instrument panel 100 Vehicle

Claims (5)

An in-vehicle heating device installed in front of a lower portion of a seat cushion that is a seat seating portion of a vehicle,
An inhalation guide part having an inhalation port in front of the seat cushion and serving as an outside air inhalation path;
An air blowing section for sucking outside air into the inside through the suction guide section;
A hot air forming unit that includes a heater inside and heats the air from the air blowing unit to form hot air;
Left and right outlets for blowing out the hot air from the hot air forming part, an outlet part provided with a central outlet part,
A blowing direction adjusting unit that adjusts the direction of warm air blown out from the left and right blowing units based on the temperature of the warm air up and down,
An in-vehicle heating device.   A temperature detection unit for detecting the temperature of the hot air, and the blowing direction adjustment unit adjusts the direction of blowing the hot air upward when the detected temperature is lower than a predetermined threshold, and detects the detected temperature The in-vehicle heating device according to claim 1, wherein when the temperature is higher than a predetermined threshold, a direction in which the warm air is blown out is adjusted downward.   The in-vehicle heating device according to claim 1, wherein the blowing direction adjusting unit adjusts a direction of warm air blown from the left and right blowing units with a spring made of a shape memory alloy and a bias spring.   The in-vehicle heating device according to claim 1, wherein the blowing direction adjusting unit adjusts a direction of warm air blown out from the left and right blowing units by a bimetal. When turning on the power of the in-vehicle heating device,
The left and right outlets are directed in the direction corresponding to the calf in the seated state where the seated person of the seat where the in-vehicle heating device is installed,
The in-vehicle heating device according to any one of claims 1 to 4, wherein the central outlet is directed to a floor surface in a room of the vehicle.