Front portion structure of vehicle body

Abstract

The present application provides a vehicle body front structure. In the vehicle body front structure, cooling efficiency of a heat exchanger is improved. The vehicle body front structure (1) has: a heat exchanger assembly (10) including at least one heat exchanger (13, 14, 15); a protection member (35) provided on a front surface of a lower portion of the heat exchanger assembly, having air permeability; a pair of left and right air guide members (40) provided in front of left and right side edges of the heat exchanger assembly, extending upward and downward and extending toward the front; a first sealing member (61) sealing a gap between each air guide member and the protection member; and a second sealing member (62) sealing a gap between each air guide member and the heat exchanger assembly.

Description

Technical Field

[0001] This invention relates to a front structure of a vehicle body. Background Technology

[0002] In recent years, research and development efforts have been underway to improve energy efficiency in order to ensure the use of sustainable and advanced energy sources and to make them more trustworthy and reliable to a wider range of people. Patent Document 1 discloses a front body structure comprising a rectangular panel body supported by a body frame, a radiator and condenser for an air conditioning unit supported on the inner side of the panel body, and an air guide component extending forward from the panel body. The air guide component directs airflow to the radiator and condenser.

[0003] Existing technical documents

[0004] Patent Document 1: Japanese Patent Application Publication No. 11-129935 Summary of the Invention

[0005] The problem that the invention aims to solve

[0006] However, in the front body structure of Patent Document 1, there is a gap between the panel body and the radiator and condenser. Therefore, there is a problem that the driving air guided by the air guide component flows through the gap between the panel body and the radiator and condenser.

[0007] In view of the above background, the objective of this invention is to improve the cooling efficiency of the heat exchanger in the front structure of a vehicle body. Furthermore, the objective of this invention is to improve energy efficiency by increasing the cooling efficiency of the heat exchanger.

[0008] Methods for solving problems

[0009] To address the aforementioned issues, one aspect of the present invention is a vehicle front structure (1) comprising: a heat exchanger assembly (10) including at least one heat exchanger (13, 14, 15); a protective member (35) disposed on the lower front surface of the heat exchanger assembly and having ventilation; a pair of left and right air guide members (40) disposed in front of the left and right side edges of the heat exchanger assembly, extending vertically and forward; a first sealing member (61) sealing the gap between each of the air guide members and the protective member; and a second sealing member (62) sealing the gap between each of the air guide members and the heat exchanger assembly.

[0010] This method allows for efficient guidance of airflow to the heat exchanger assembly. Consequently, the cooling efficiency of the heat exchanger can be improved in the front structure of the vehicle body. Furthermore, by improving the cooling efficiency of the heat exchanger, energy efficiency can be increased.

[0011] In the above manner, each of the air guide components may have: a lower abutment portion (50) that abuts against the protective member via the first sealing member; and an upper abutment portion (51) that abuts against the heat exchanger assembly via the second sealing member, the upper abutment portion being disposed rearward relative to the lower abutment portion.

[0012] This method can reduce the gap between the heat exchanger assembly and protective components and the air guide components.

[0013] In the above-described manner, a partition (2) may also be provided, which has: a pair of left and right longitudinal beams (3) extending vertically; an upper member (4) extending horizontally and connected to the upper end of each of the longitudinal beams; and a lower member (5) extending horizontally and connected to the lower end of each of the longitudinal beams. The heat exchanger assembly is disposed inside the partition, and the left and right air guide components have fastening parts (42) fastened to the corresponding longitudinal beams on the left and right sides.

[0014] According to this method, the load applied to the air guide component from the front can be transferred to the baffle, making it difficult to apply load to the heat exchanger assembly.

[0015] In the above manner, it is preferred that the air guide component has a main body (41) extending forward and backward, and the fastening part is formed as a plate facing forward and backward and is disposed at the rear end of the main body.

[0016] According to this method, the load applied to the air guide component from the front is efficiently transferred to the baffle via the fastening part.

[0017] In the above manner, at least one of the heat exchangers may have: a first heat exchanger (13); a second heat exchanger (14) disposed in front of the upper part of the first heat exchanger; and a third heat exchanger (15) disposed in front of the lower part of the first heat exchanger, with the protective member disposed in front of the third heat exchanger.

[0018] According to this method, the protective component can protect the heat exchanger assembly from foreign objects flying from the front and bottom of the heat exchanger assembly.

[0019] In the above method, the gap between the left and right sides of the first heat exchanger and the left and right sides of the second heat exchanger may be sealed by the third sealing component 63.

[0020] According to this method, leakage of airflow from the gap between the first heat exchanger and the second heat exchanger can be suppressed.

[0021] In the above-described manner, the first heat exchanger, the second heat exchanger, and the third heat exchanger may each have an upstream manifold (20, 25, 30), a downstream manifold (21, 26, 31), and a plurality of heat dissipation pipes (22, 27, 32) connecting the upstream manifold and the downstream manifold. The upstream manifold and the downstream manifold extend vertically and are spaced apart on the left and right sides, and the plurality of heat dissipation pipes extend horizontally. The upper contact portion abuts against the upstream manifold or the downstream manifold of the second heat exchanger via the second sealing member.

[0022] This method allows for efficient guidance of airflow to the cooling ducts.

[0023] Invention Effects

[0024] Based on the above structure, the cooling efficiency of the heat exchanger can be improved in the front structure of the vehicle body. Furthermore, by improving the cooling efficiency of the heat exchanger, energy efficiency can be increased. Attached Figure Description

[0025] Figure 1 It is a three-dimensional diagram of the front structure of the vehicle body.

[0026] Figure 2 This is a front view of the front structure of the vehicle body.

[0027] Figure 3 It is a schematic cross-sectional view of the upper part of the front structure of the vehicle body.

[0028] Figure 4 It is a schematic cross-sectional view of the lower part of the front structure of the vehicle body.

[0029] Figure 5 This is an enlarged sectional view showing the lower left end of the front structure of the vehicle body.

[0030] Figure 6 This is a side view of the air guide component on the left, viewed from the right.

[0031] Explanation of reference numerals in the attached figures

[0032] 1: Front structure of the vehicle body

[0033] 2: Bulkhead

[0034] 3: Longitudinal beam

[0035] 4: Upper component

[0036] 5: Lower component

[0037] 10: Heat exchanger assembly

[0038] 13: First heat exchanger (heat exchanger)

[0039] 14: Second heat exchanger (heat exchanger)

[0040] 15: Third heat exchanger (heat exchanger)

[0041] 20: First upstream manifold (upstream manifold)

[0042] 21: First downstream manifold (downstream manifold)

[0043] 22: First heat pipe (heat pipe)

[0044] 25: Second upstream manifold (upstream manifold)

[0045] 26: Second downstream manifold (downstream manifold)

[0046] 27: Second heat pipe (heat pipe)

[0047] 30: Third upstream manifold (upstream manifold)

[0048] 31: Third downstream manifold (downstream manifold)

[0049] 32: Third heat pipe (heat pipe)

[0050] 35: Protective components

[0051] 40: Air guide components

[0052] 41: Main body

[0053] 42: Fastening part

[0054] 50: Lower contact part

[0055] 51: Upper contact part

[0056] 61: First sealing component

[0057] 62: Second sealing component

[0058] 63: Third sealing component Detailed Implementation

[0059] Hereinafter, an embodiment of the front body structure 1 of the present invention will be described with reference to the accompanying drawings. In this embodiment, the front body structure 1 constitutes the front of the body of a four-wheeled vehicle. Furthermore, the direction used for explanation is based on the driver of the vehicle to which the front body structure 1 of the present invention is applied.

[0060] like Figure 1 and Figure 2As shown, the front structure 1 of the vehicle body has a partition 2 and a heat exchanger assembly 10. The partition 2 is located at the front end of the front structure 1 and is generally rectangular in shape. The partition 2 has a pair of vertically extending left and right longitudinal beams 3, an upper member 4 connected to the upper end of each of the longitudinal beams 3, and a lower member 5 connected to the lower end of each of the longitudinal beams 3. The upper member 4 is positioned on the rear side relative to the lower member 5, and the partition 2 is in a rearward tilted state.

[0061] An upper air guide component 6 extending to the left and right and forward is provided at the lower front end of the upper component 4. The upper air guide component 6 is a component that guides the driving air from the front of the vehicle toward the heat exchanger assembly 10. The upper air guide component 6 has a flange portion 7 and a plate portion 8 that are connected to the upper component 4. The flange portion 7 has a front-to-rear facing surface and is connected to the upper component 4 on its rear surface. The plate portion 8 is connected to the lower end of the flange portion 7 and extends forward.

[0062] A lower air guide component 11 is provided at the lower front end of the lower component 5. The lower air guide component 11 is a component that guides the driving air from the front of the vehicle toward the heat exchanger assembly 10. The lower air guide component 11 extends to the left and right and is inclined forward.

[0063] The heat exchanger assembly 10 is disposed inside the partition 2. The heat exchanger assembly 10 includes heat exchangers 13, 14, and 15. Heat exchangers 13, 14, and 15 can be cross-flow type heat exchangers. Heat exchangers 13, 14, and 15 have a first heat exchanger 13, a second heat exchanger 14, and a third heat exchanger 15. The second heat exchanger 14 is disposed in front of the upper part of the first heat exchanger 13. The third heat exchanger 15 is disposed in front of the lower part of the first heat exchanger 13. A cooling fan 16 with a rotating shaft extending in the front-rear direction is disposed behind the first heat exchanger 13. The cooling fan 16 cools the heat exchangers 13, 14, and 15 by rotating and blowing air into them.

[0064] The first heat exchanger 13 functions as a radiator for an internal combustion engine. The first heat exchanger 13 is connected via piping to a water jacket installed in the internal combustion engine body, turbocharger, etc. The first heat exchanger 13 is a device for cooling the cooling water (hereinafter referred to as the first cooling water) for the internal combustion engine that circulates through the piping. The cooling water's temperature rises as it circulates in heat sources constituting the internal combustion engine (e.g., the cylinder head).

[0065] like Figure 3 as well as Figure 4As shown, the first heat exchanger 13 has a first upstream manifold 20, a first downstream manifold 21, and a plurality of first heat dissipation pipes 22. The first upstream manifold 20 and the first downstream manifold 21 are arranged on the left and right sides, spaced apart. The plurality of first heat dissipation pipes 22 connect the first upstream manifold 20 and the first downstream manifold 21. A plurality of heat dissipation fins (not shown) are arranged between the plurality of first heat dissipation pipes 22. Cooling water flows from the first upstream manifold 20 through the plurality of first heat dissipation pipes 22 to the first downstream manifold 21.

[0066] The first upstream manifold 20 distributes the cooling water flowing in from the internal combustion engine. The first upstream manifold 20 is a hollow component extending vertically. The first upstream manifold 20 is made of metal. The first upstream manifold 20 is located on the left side of the first heat exchanger 13. The cooling water accumulated in the first upstream manifold 20 flows into a plurality of first radiator pipes 22.

[0067] Multiple first heat dissipation pipes 22 allow cooling water to flow from a first upstream manifold 20 to a first downstream manifold 21. Each first heat dissipation pipe 22 is a hollow component extending laterally. The first heat dissipation pipes 22 can be formed with decreasing thickness. The multiple first heat dissipation pipes 22 can be formed of an aluminum alloy with high thermal conductivity. The heat of the cooling water flowing within the multiple first heat dissipation pipes 22 is transferred to multiple heat sinks and released into the air. Thus, the cooling water is cooled. The cooling water flowing out of the multiple first heat dissipation pipes 22 flows into the first downstream manifold 21.

[0068] The first downstream manifold 21 is a hollow component extending vertically. The first downstream manifold 21 is made of metal. The first downstream manifold 21 is located on the right side of the first heat exchanger 13. Cooled water accumulated in the first downstream manifold 21 flows to the internal combustion engine main body through piping.

[0069] The second heat exchanger 14 functions as a condenser for an air conditioning unit. The second heat exchanger 14 is connected to the vehicle's air conditioning system via piping. The second heat exchanger 14 is a device for cooling the refrigerant circulating through the piping. The refrigerant's temperature rises as it is compressed by the air compressor.

[0070] The second heat exchanger 14 has a second upstream manifold 25, a second downstream manifold 26, and a plurality of second heat dissipation pipes 27. The second upstream manifold 25 and the second downstream manifold 26 are arranged on the left and right sides, spaced apart. The plurality of second heat dissipation pipes 27 connect the second upstream manifold 25 and the second downstream manifold 26. A plurality of heat sinks (not shown) are arranged between the plurality of second heat dissipation pipes 27.

[0071] The refrigerant flows from the second upstream manifold 25 to the second downstream manifold 26 through multiple second heat dissipation pipes 27. The structure of the second heat exchanger 14 for cooling the refrigerant is the same as that of the first heat exchanger 13 for cooling the first cooling water, so the description is omitted.

[0072] The third heat exchanger 15 functions as a radiator for the hybrid power system. The third heat exchanger 15 is connected via piping to a water jacket installed in the electronic control unit, motor, etc. The third heat exchanger 15 is a device for cooling the hybrid power system's cooling water (hereinafter referred to as third cooling water), which circulates through the piping. The third cooling water's temperature rises as it circulates in the electrical components (e.g., motors, etc.) constituting the hybrid power system.

[0073] The third heat exchanger 15 has a third upstream manifold 30, a third downstream manifold 31, and a plurality of third heat dissipation pipes 32. The third upstream manifold 30 and the third downstream manifold 31 are arranged on the left and right sides with a gap between them. The plurality of third heat dissipation pipes 32 connect the third upstream manifold 30 and the third downstream manifold 31. A plurality of heat sinks (not shown) are arranged between the plurality of third heat dissipation pipes 32.

[0074] The third cooling water flows from the third upstream manifold 30 through multiple third heat dissipation pipes 32 to the third downstream manifold 31. The structure of the third heat exchanger 15 for cooling the third cooling water is the same as that of the first heat exchanger 13 for cooling the first cooling water, so the description is omitted.

[0075] The electrical components constituting the hybrid power system have a lower permissible heat resistance temperature than the heat source constituting the internal combustion engine. Therefore, the third cooling water needs to be cooled to a lower temperature than the first cooling water. Therefore, the length of the third radiator 32 can also be configured to be longer than the length of the first radiator 22.

[0076] like Figure 1 and Figure 2 As shown, a protective member 35 is disposed in front of the third heat exchanger 15. The protective member 35 is a component used to protect the heat exchangers 13, 14, and 15 from foreign objects (such as flying stones) flying from the front and below of the vehicle. The protective member 35 is disposed on the lower air guide member 11. The protective member 35 can be formed into a rectangular shape from resin material. The protective member 35 has multiple vent holes 36 extending from front to back. Thus, the protective member 35 is breathable. The multiple vent holes 36 can be arranged in a grid pattern when viewed from the front. A pair of left and right air guide members 40 are disposed on the left and right sides of the protective member 35.

[0077] A pair of left and right air guide components 40 are disposed in front of the left and right side edges of the heat exchanger assembly 10. The pair of left and right air guide components 40 are components that guide the airflow from the front of the vehicle toward the heat exchanger assembly 10. The pair of left and right air guide components 40 are arranged symmetrically with respect to the front-rear central axis of the vehicle. Hereinafter, the air guide component 40 disposed on the left side will be described. The description of the air guide component 40 on the right side will be omitted.

[0078] The air guide component 40 is formed of resin material. The air guide component 40 has a main body 41, a fastening part 42, and an abutment part 43.

[0079] like Figure 1 as well as Figure 6 As shown, the main body portion 41 extends vertically and forward. The main body portion 41 has a lower main body portion 44 and an upper main body portion 45 disposed above the lower main body portion 44. The lower main body portion 44 constitutes the lower part of the main body portion 41. The upper main body portion 45 constitutes the upper part of the main body portion 41. The lower part of the lower main body portion 44 slopes upward and forward. The upper part of the upper main body portion 45 slopes downward and forward. A recess is formed between the lower main body portion 44 and the upper main body portion 45.

[0080] like Figures 3 to 5 As shown, the front part of the main body 41 is offset to the right relative to the rear part of the main body 41. A fastening part 42 is provided on the left side of the rear part of the main body 41. An abutting part 43 is provided on the right side of the rear part of the main body 41.

[0081] The fastening part 42 extends to the left from the rear left side of the main body 41. The fastening part 42 is formed as a plate facing forward and backward. The rear surface of the fastening part 42 is fastened to the left longitudinal beam 3. (As shown) Figure 1 As shown, the fastening part 42 has an upper fastening part 48 that is fastened to the upper part of the longitudinal beam 3 and a lower fastening part 49 that is fastened to the lower part of the longitudinal beam 3. By fastening the upper fastening part 48 and the lower fastening part 49 to the longitudinal beam 3, the air guide component 40 is connected to the partition plate 2.

[0082] like Figure 2 and Figure 6 As shown, the abutment portion 43 extends to the right from the rear right side of the main body portion 41. The abutment portion 43 has a lower abutment portion 50 and an upper abutment portion 51 connected to the lower abutment portion 50.

[0083] The lower abutment portion 50 forms the lower part of the abutment portion 43. The lower abutment portion 50 is disposed in the vertical direction at a position corresponding to the lower main body portion 44. The lower abutment portion 50 has a surface facing forward and backward. The lower abutment portion 50 is disposed at a distance from the protective member 35.

[0084] The upper abutment portion 51 forms the upper part of the abutment portion 43. The upper abutment portion 51 is positioned vertically in a direction corresponding to the upper main body portion 45. The upper abutment portion 51 has a surface facing forward and backward. The upper abutment portion 51, the fastening portion 42, and the main body portion 41 form a T-shape when viewed from above (see reference). Figure 3 The upper abutment portion 51 is disposed rearward relative to the lower abutment portion 50. The lower end of the upper abutment portion 51 is connected to the upper end of the lower abutment portion 50 via a stepped portion 52.

[0085] The stepped portion 52 has a surface that extends forward and backward and faces upward and downward. The stepped portion 52 is disposed between the lower main body portion 44 and the upper main body portion 45 in the vertical direction. The upper abutment portion 51 is disposed at a distance from the second heat exchanger 14. A connecting portion 54 extending to the right is formed at the upper end of the upper abutment portion 51.

[0086] The connecting part 54 is connected to the upper abutting part 51 and the upper end of the main body part 41. The rear surface of the connecting part 54 is connected to the front surface of the flange part 7 of the upper air guide member 6. Thus, the air guide member 40, the upper air guide member 6, and the partition 2 are connected.

[0087] like Figures 3 to 5 As shown, the gaps between the air guide component 40, heat exchangers 13, 14, 15, and protective component 35 are sealed by sealing components 61, 62, and 63, respectively. Sealing components 61, 62, and 63 are formed of a flexible rubber material. Sealing components 61, 62, and 63 include a first sealing component 61, a second sealing component 62, and a third sealing component 63. The first sealing component 61, the second sealing component 62, and the third sealing component 63 can be formed of the same material. Alternatively, the first sealing component 61, the second sealing component 62, and the third sealing component 63 can also be formed of different materials.

[0088] The first sealing member 61 seals the gap between the lower abutment portion 50 of the air guide member 40 and the protective member 35. The first sealing member 61 extends vertically along the lower abutment portion 50 and the protective member 35. The rear surface of the lower abutment portion 50 abuts against the front surface of the protective member 35 via the first sealing member 61.

[0089] The second sealing member 62 seals the gap between the upper abutment portion 51 of the air guide member 40 and the second upstream manifold 25 or the second downstream manifold 26 of the second heat exchanger 14. The second sealing member 62 extends vertically along the upper abutment portion 51. The rear surface of the upper abutment portion 51 of the left air guide member 40 abuts against the second upstream manifold 25 via the second sealing member 62. The rear surface of the upper abutment portion 51 of the right air guide member 40 abuts against the second downstream manifold 26 via the second sealing member 62.

[0090] The third sealing member 63 seals the gap between the left and right sides of the first heat exchanger 13 (i.e., the first upstream manifold 20 or the first downstream manifold 21) and the left and right sides of the second heat exchanger 14 (i.e., the second upstream manifold 25 or the second downstream manifold 26). The third sealing member 63 extends vertically along the left and right sides of the second heat exchanger 14. The front of the left and right sides of the first heat exchanger 13 abuts against the rear of the left and right sides of the second heat exchanger 14 via the third sealing member 63.

[0091] The effects of the front body structure 1 of the present invention will be described below. The front body structure 1 includes at least one heat exchanger assembly 10, a ventilated protective member 35, and a pair of left and right air guide members 40. The protective member 35 is disposed on the lower front surface of the heat exchanger assembly 10. The pair of left and right air guide members 40 are disposed in front of the left and right side edges of the heat exchanger assembly 10, and have a main body portion 41 extending vertically and forward. The gap between each air guide member 40 and the protective member 35 is sealed by a first sealing member 61. The gap between each air guide member 40 and the heat exchanger assembly 10 is sealed by a second sealing member 62.

[0092] According to this structure, the airflow entering from the front of the vehicle through the protective member 35 is guided by the air guide member 40 to the heat exchanger assembly 10. The gap between the air guide member 40 and the protective member 35 is sealed by the first sealing member 61, thus preventing airflow leakage from the gap. Furthermore, the gap between the air guide member 40 and the heat exchanger assembly 10 is sealed by the second sealing member 62, thus preventing airflow leakage from the gap. Therefore, the airflow can be efficiently guided to the heat exchanger assembly 10. As a result, the cooling efficiency of the heat exchangers 13, 14, and 15 can be improved in the front structure 1 of the vehicle body. Furthermore, by improving the cooling efficiency of the heat exchangers 13, 14, and 15, energy efficiency can be improved.

[0093] The air guide component 40 has a lower abutment portion 50 and an upper abutment portion 51. The lower abutment portion 50 abuts against the protective member 35 via a first sealing member 61. The upper abutment portion 51 abuts against the heat exchanger assembly 10 via a second sealing member 62. In addition, the upper abutment portion 51 is disposed rearward relative to the lower abutment portion 50.

[0094] The protective member 35 is provided on the lower front surface of the heat exchanger assembly 10. Therefore, the upper part of the heat exchanger assembly 10 is offset rearward relative to the protective member 35. By arranging the upper abutment portion 51 as described above, the upper abutment portion 51 can be arranged close to the heat exchanger assembly 10, and the lower abutment portion 50 can be arranged close to the protective member 35. Therefore, the gap between the heat exchanger assembly 10, the protective member 35, and the air guide member 40 can be reduced. Thus, the front structure 1 of the vehicle body can be compactly constructed.

[0095] The front structure 1 of the vehicle body has a partition 2. The partition 2 has a pair of vertically extending longitudinal beams 3, an upper member 4, and a lower member 5. The upper member 4 extends to the left and right and connects to the upper ends of the respective longitudinal beams 3. The lower member 5 extends to the left and right and connects to the lower ends of the respective longitudinal beams 3. A heat exchanger assembly 10 is disposed inside the partition 2. The left and right air guide components 40 have fastening parts 42 that are fastened to the corresponding longitudinal beams 3 on the left and right sides.

[0096] Therefore, when a load is applied to the air guide component 40 from the front, the load is transmitted to the partition plate 2 via the fastening part 42. As a result, it is difficult to apply a load to the heat exchanger assembly 10.

[0097] The air guide component 40 has a main body 41 extending forward and backward. The fastening part 42 is formed into a plate facing forward and backward and is provided at the rear end of the main body 41.

[0098] As a result, the contact area between the fastening portion 42 of the air guide component 40 and the partition 2 increases. Therefore, the load applied to the air guide component 40 from the front is efficiently transferred to the partition 2 via the fastening portion 42. In addition, since the running air pushes the fastening portion 42 against the partition 2, the sealing performance of the first sealing member 61 and the second sealing member 62 is improved. Moreover, since the running air is guided along the front-to-back extending main body portion 41, the running air can be efficiently guided to the heat exchanger assembly 10.

[0099] At least one heat exchanger 13, 14, 15 has a first heat exchanger 13, a second heat exchanger 14, and a third heat exchanger 15. The second heat exchanger 14 is disposed in front of the upper part of the first heat exchanger 13. The third heat exchanger 15 is disposed in front of the lower part of the first heat exchanger 13. A protective member 35 is disposed in front of the third heat exchanger 15.

[0100] Therefore, the protective element 35 is positioned in front of the heat exchanger assembly 10. This protects the heat exchanger assembly 10 from foreign objects flying in from the front and below. Furthermore, three different heat exchangers 13, 14, and 15 can be installed in one heat exchanger assembly 10.

[0101] The gap between the left and right sides of the first heat exchanger 13 and the left and right sides of the second heat exchanger 14 is sealed by the third sealing component 63.

[0102] This prevents leakage of airflow from the gap between the first heat exchanger 13 and the second heat exchanger 14. Consequently, the airflow can be efficiently guided to the first heat exchanger 13.

[0103] The first heat exchanger 13 has a first upstream manifold 20, a first downstream manifold 21, and a plurality of first heat dissipation pipes 22. The second heat exchanger 14 has a second upstream manifold 25, a second downstream manifold 26, and a plurality of second heat dissipation pipes 27. The third heat exchanger 15 has a third upstream manifold 30, a third downstream manifold 31, and a plurality of third heat dissipation pipes 32. The first upstream manifold 20 and the first downstream manifold 21, the second upstream manifold 25 and the second downstream manifold 26, and the third upstream manifold 30 and the third downstream manifold 31 extend vertically and vertically, and are arranged at intervals on the left and right sides. The plurality of first heat dissipation pipes 22 extend horizontally and horizontally, connecting the first upstream manifold 20 and the first downstream manifold 21. The plurality of second heat dissipation pipes 27 extend horizontally and horizontally, connecting the second upstream manifold 25 and the second downstream manifold 26. The plurality of third heat dissipation pipes 32 extend horizontally and horizontally, connecting the third upstream manifold 30 and the third downstream manifold 31. The upper contact portion 51 abuts against the second upstream manifold 25 or the second downstream manifold 26 of the second heat exchanger 14 via the second sealing member 62.

[0104] Thus, a pair of air guide components 40 guide the driving air to multiple heat dissipation pipes 22, 27, and 32. Furthermore, leakage of driving air from the gaps between the air guide components 40, the upstream manifolds 20, 25, and 30, and the downstream manifolds 21, 26, and 31 can be suppressed. Therefore, the driving air can be efficiently guided to the heat dissipation pipes 22, 27, and 32.

[0105] In addition, the first heat exchanger 13 is a radiator for an internal combustion engine, the second heat exchanger 14 is a condenser for an air conditioning unit, and the third heat exchanger 15 is a radiator for a hybrid power system.

[0106] This can improve the cooling efficiency of radiators for internal combustion engines, condensers for air conditioning units, and radiators for hybrid power systems.

[0107] The description of the specific embodiments has concluded, but the present invention is not limited to the above embodiments and can be widely modified. In the above embodiments, heat exchangers 13, 14, and 15 are of the cross-flow type, but the heat exchangers can also be of the downflow type. In this case, the upstream and downstream manifolds extend to the left and right, and the heat dissipation pipes extend upward and downward.

Claims

1. A vehicle body front structure, wherein the vehicle body front structure has: a heat exchanger assembly including at least one heat exchanger; a protector provided to a front surface of a lower portion of the heat exchanger assembly, and having air permeability; a pair of left and right air guide members provided to front portions of left and right side edges of the heat exchanger assembly, extending upward and downward, and extending toward the front; a first seal member that seals a gap between each of the air guide members and the protector; and a second seal member that seals a gap between each of the air guide members and the heat exchanger assembly, each of the air guide members has: a lower abutting portion that abuts against the protector via the first seal member; an upper abutting portion that abuts against the heat exchanger assembly via the second seal member; and a stepped portion including a surface that extends front and back and is oriented upward, the stepped portion connects a lower end of the upper abutting portion and an upper end of the lower abutting portion, the upper abutting portion is disposed offset rearward with respect to the lower abutting portion.

2. The vehicle body front structure according to claim 1, wherein the vehicle body front structure further has a partition having: a pair of left and right longitudinal members that extend upward and downward; an upper member that extends left and right, and connects to respective upper ends of the longitudinal members; and a lower member that extends left and right, and connects to respective lower ends of the longitudinal members, the heat exchanger assembly is disposed inside the partition, the left and right air guide members have fastening portions that are fastened to the corresponding longitudinal members left and right.

3. The vehicle body front structure according to claim 2, wherein the air guide members have a main body portion that extends front and back, a front portion of the main body portion is offset inward left and right with respect to a rear portion of the main body portion, the fastening portions are formed in a plate shape that is oriented front and back, and are provided to rear ends of the main body portions.

4. The vehicle body front structure according to claim 3, wherein the at least one heat exchanger has: a first heat exchanger; a second heat exchanger disposed front of an upper portion of the first heat exchanger; and a third heat exchanger disposed front of a lower portion of the first heat exchanger, the protector is disposed front of the third heat exchanger.

5. The vehicle body front structure according to claim 4, wherein a gap between left and right side portions of the first heat exchanger and left and right side portions of the second heat exchanger is sealed by a third seal member.

6. The vehicle body front structure according to claim 5, wherein the first heat exchanger, the second heat exchanger, and the third heat exchanger each have an upstream-side header, a downstream-side header, and a plurality of heat radiating tubes that connect the upstream-side header and the downstream-side header, the upstream-side headers and the downstream-side headers each extend upward and downward, and are disposed apart by a gap left and right, the plurality of heat radiating tubes extend left and right, the upper abutting portions each abut against the upstream-side header or the downstream-side header of the second heat exchanger via the second seal member. ​

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