Ventilation structure of cargo box in a vehicle

Abstract

To provide a ventilation structure of a cargo box of a vehicle making it possible to effectively separate a foreign matter from outside air introduced into the inside of the cargo box through an introduction passage.SOLUTION: In a ventilation structure of a cargo box 12 of a vehicle, an introduction passage 19 through which travel wind of a vehicle is introduced as outside air to the inside of the cargo box 12 is formed. The ventilation structure includes a filter member 21 disposed to match a circulation cross section of outside air in the introduction passage 19. The filter member 21 passes outside air and separates a foreign matter contained in the outside air from the outside air. When outside air passes through the filter member 21, a foreign matter such as water contained in the outside air adheres to the filter member 21. Thus, the foreign matter such as water is separated from the outside air. Accordingly, a foreign matter can be effectively separated from outside air introduced into the inside of the cargo box 12 through the introduction passage 19.SELECTED DRAWING: Figure 2

Description

Technical Field

[0005] , ,

[0001] The present invention relates to a ventilation structure of a cargo box in a vehicle.

Background Art

[0002] Patent Document 1 describes a ventilation structure for ventilating the inside of a cargo box of a vehicle. In this ventilation structure, an introduction passage is formed to introduce the running wind of the vehicle into the cargo box as outside air. In the introduction passage, an intrusion prevention body is formed to separate foreign matters such as water from the passing outside air by narrowing the flow area of the outside air in the introduction passage. The outside air passing through the introduction passage is introduced into the inside of the cargo box after the separation of foreign matters by the intrusion prevention body, and then is led out to the outside after passing through the inside of the cargo box.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described ventilation structure of the cargo box in the vehicle, although foreign matters such as water contained in the outside air passing through the introduction passage can be separated from the outside air to some extent by the intrusion prevention body, there is room for improvement in effectively separating foreign matters from the outside air.

Means for Solving the Problems

[0005] Hereinafter, each aspect of the ventilation structure of the cargo box in the vehicle for solving the above problems will be described. (Aspect 1) In a ventilation structure for a cargo bed box in a vehicle, which has an introduction passage for introducing the airflow from the vehicle as outside air into the cargo bed box, the structure includes a filter member arranged to correspond to the flow cross-section of the outside air in the introduction passage, and the filter member separates foreign matter contained in the outside air from the outside air while allowing the outside air to pass through.

[0006] According to the above configuration, outside air is introduced into the cargo box through an intake passage when the vehicle is in motion. A filter member for separating foreign matter from the outside air is positioned in the intake passage so as to correspond to the flow cross-section of the outside air in the intake passage. Therefore, the outside air introduced into the cargo box from the intake passage passes through the filter member positioned in the intake passage. When the outside air passes through the filter member, foreign matter such as water contained in the outside air adheres to the filter member, thereby separating the foreign matter from the outside air. This effectively separates foreign matter from the outside air introduced into the cargo box through the intake passage. As a result, it is possible to effectively suppress the entry of foreign matter into the cargo box along with the outside air.

[0007] (Aspect 2) A ventilation structure for a cargo bed box in a vehicle according to Embodiment 1, wherein a cover panel is positioned above the roof panel of the cargo bed box to form the intake passage between it and the roof panel, and a canopy is formed at the front end of the cover panel of the vehicle to guide outside air that hits the front panel of the cargo bed box and flows upward when the vehicle is in motion into the intake passage.

[0008] With the above configuration, when the vehicle is in motion, outside air hits the front panel of the cargo box and flows upward. This upward-flowing outside air then hits the awning and is guided into the intake passage between the roof panel and the cover panel of the cargo box. Therefore, outside air can be efficiently introduced into the intake passage when the vehicle is in motion.

[0009] (Aspect 3) A cover panel is positioned above the roof panel of the cargo bed box to form the intake passage between itself and the roof panel, and a communication hole is formed in the roof panel to connect the intake passage to the inside of the cargo bed box, the filter member is positioned upstream of the communication hole in the direction of the flow of outside air through the intake passage when the vehicle is in motion, and a shielding plate is positioned behind the communication hole in the intake passage to block the space between the roof panel and the cover panel. This is a ventilation structure for a cargo bed box in a vehicle according to (Aspect 1) or (Aspect 2).

[0010] With the above configuration, foreign matter can be separated from the outside air by the filter member before the outside air passing through the intake passage is introduced into the cargo bed box through the communication hole. Furthermore, on the vehicle rear side of the intake passage beyond the communication hole, the space between the roof panel and the cover panel is closed by a shielding plate. Therefore, the shielding plate prevents the outside air passing through the intake passage from flowing beyond the communication hole to the vehicle rear side instead of into the cargo bed box through the communication hole. As a result, outside air can be efficiently introduced into the cargo bed box through the communication hole.

[0011] (Aspect 4) The introduction passage extends from the front of the vehicle to the rear of the vehicle, and a waterproof cover is provided in the introduction passage that protrudes from a location in front of the vehicle beyond the communication hole in the roof panel and extends towards the rear of the vehicle above the communication hole (Ventilation structure for a cargo bed box in a vehicle according to Embodiment 3).

[0012] According to the above configuration, outside air flows through the intake passage from the front to the rear of the vehicle, then wraps around the waterproof cover from the rear to the front of the vehicle, and is introduced into the cargo box through the communication hole. Therefore, even if the outside air contains water that cannot be separated by the filter member, the water is separated from the outside air as the outside air wraps around the waterproof cover. In this way, the outside air from which the water has been separated can be introduced into the cargo box.

[0013] (Aspect 5) A ventilation structure for a cargo bed box in a vehicle according to any one of (Aspect 1) to (Aspect 4), wherein a cover panel is positioned above the roof panel of the cargo bed box to form the introduction passage between itself and the roof panel, a communication hole is formed in the roof panel that connects the introduction passage to the inside of the cargo bed box, and a water-stopping plate is provided in the introduction passage that protrudes from the roof panel to prevent the flow of water along the roof panel toward the communication hole.

[0014] According to the above configuration, when outside air passes through the intake passage, water contained in the outside air separates from the outside air and accumulates on the roof panel of the cargo bed box. The water-stopping plate can prevent this water from flowing toward the communication hole. Therefore, it is possible to prevent the water from entering the interior of the cargo bed box through the communication hole.

[0015] (Aspect 6) The introduction passage is connected to the interior of the cargo bed box via a communication hole, and an opening panel is installed inside the cargo bed box so as to cover the communication hole, and the opening panel has a plurality of openings that open in different directions to the interior of the cargo bed box. A ventilation structure for a cargo bed box in a vehicle according to any one of (Aspect 1) to (Aspect 5).

[0016] According to the above configuration, when cargo is loaded into the cargo box, even if one of the openings in the opening panel is blocked by the cargo, the likelihood of another opening facing a different direction being blocked by the cargo is reduced. Therefore, it is possible to prevent the communication holes from being blocked by the cargo inside the cargo box.

[0017] (Aspect 7) A ventilation structure for a cargo bed box in a vehicle according to any one of (Aspect 1) to (Aspect 6), wherein an outlet passage is formed to discharge the air inside the cargo bed box to the outside, and the filter member is also arranged in the outlet passage so as to correspond to the cross-section of the air flow in the outlet passage.

[0018] According to the above configuration, when the vehicle is running, the outside air introduced from the introduction passage into the interior of the cargo box passes through the interior of the cargo box and is then led outside from the discharge passage. Even if the outside air enters the interior of the cargo box through the discharge passage due to the natural wind when the vehicle is parked or the running wind when the vehicle is moving backward, the filter member can separate foreign matters such as water from the outside air, so that the outside air can be prevented from entering the interior of the cargo box together with the foreign matters.

Brief Description of the Drawings

[0019] [Figure 1] It is a perspective view schematically showing the whole vehicle. [Figure 2] It is a cross-sectional view showing the intake duct and the structure around it in the vehicle of FIG. 1. [Figure 3] It is a perspective view showing an example of the filter member. [Figure 4] It is a perspective view showing an example of the filter member. [Figure 5] It is a cross-sectional view showing the structure around the second communication hole in the cargo box of the vehicle of FIG. 1. [Figure 6] It is a perspective view showing the opening panel arranged near the second communication hole of FIG. 5.

Embodiments for Carrying out the Invention

[0020] Hereinafter, an embodiment of the ventilation structure of the cargo box in a vehicle will be described with reference to FIGS. 1 to 6. As shown in FIG. 1, as a vehicle 11 such as a truck, a vehicle equipped with a cargo box 12 into which luggage is loaded is known. The interior of the cargo box 12 in such a vehicle 11 is likely to be heat-trapped and the temperature is likely to rise due to the waste heat of the small mobile refrigerator 13 or the like. For this reason, in the vehicle 11, a ventilation structure for introducing the running wind as outside air into the interior of the cargo box 12 is adopted. In this ventilation structure, by introducing the running wind as outside air into the interior of the cargo box 12, the interior of the cargo box 12 is efficiently ventilated. In other words, the heat in the cargo box 12 is efficiently released to the outside.

[0021] Next, the ventilation structure described above will be explained in detail. In this ventilation structure, the airflow from the vehicle 11 is introduced into the cargo box 12 as outside air using an intake duct 14 and a first communication hole 15 provided on the front end side of the vehicle 11 within the cargo box 12. The outside air introduced into the cargo box 12 passes through the cargo box 12 from the front to the rear of the vehicle 11. Furthermore, the outside air is led to the outside using a second communication hole 16 provided on the rear end side of the vehicle 11 within the cargo box 12. The structure around the intake duct 14 and the first communication hole 15, and the structure around the second communication hole 16 in the above ventilation structure will be described in detail below.

[0022] <Structure around the intake duct 14 and the first communication hole 15> As shown in Figure 2, the intake duct 14 is attached to the roof panel 17 of the cargo box 12. The ceiling of the intake duct 14 is located above the roof panel 17 and serves as a cover panel that forms an intake passage 19 between it and the roof panel 17. A solar panel 18 for generating solar power is attached to the ceiling of the intake duct 14. The intake duct 14 is realized by utilizing the solar panel 18 and the structure that supports the solar panel 18 on the roof panel 17. The roof panel 17 has the first communication hole 15 formed therein, which connects the intake passage 19 to the inside of the cargo box 12.

[0023] An inlet 20 for outside air in the intake passage 19 is formed at the front end of the intake duct 14, i.e., the left end in Figure 2. A filter member 21 is attached to the inlet 20. The filter member 21 is positioned to correspond to the flow cross-section of outside air in the intake passage 19 (inlet 20). In other words, the filter member 21 is positioned to cover the entire flow cross-section of outside air in the intake passage 19. The filter member 21 separates foreign matter such as water contained in the outside air from the outside air while allowing the outside air to pass through.

[0024] As the filter member 21, the perforated metal 22 shown in Figure 3 can be used. The perforated metal 22 is formed from a plate having numerous holes 22a. The outside air can pass through the numerous holes 22a of the perforated metal 22. As the outside air passes through the holes 22a, foreign matter such as water contained in the outside air adheres to the area around the holes 22a of the perforated metal 22. This separates the foreign matter from the outside air.

[0025] Alternatively, the nonwoven fabric 23 shown in Figure 4 may be used as the filter member 21. The nonwoven fabric 23 is made up of numerous fibers 23a. The outside air can pass through the gaps between the numerous fibers 23a of the nonwoven fabric 23. As the outside air passes through the gaps between the numerous fibers 23a, foreign matter such as water contained in the outside air adheres to the numerous fibers 23a of the nonwoven fabric 23. This separates the foreign matter from the outside air.

[0026] As shown in Figure 2, a canopy 25 is formed at the front end of the ceiling of the intake duct 14, i.e., the left end in Figure 2, which guides the outside air that flows upward when the vehicle 11 is in motion, hitting the front panel 24 of the cargo box 12, to the inlet 20 of the intake passage 19. The canopy 25 is at the front end of the ceiling of the intake duct 14, protruding forward from a position corresponding to the upper end of the inlet 20, and is inclined to be located further forward and downward. This allows the canopy 25 to guide the outside air into the interior of the intake passage 19.

[0027] The intake passage 19 extends from the front of the vehicle to the rear of the vehicle, that is, from the left side to the right side in Figure 2. Therefore, when the vehicle 11 is in motion, the outside air guided into the intake passage 19 enters the first communication hole 15 through the intake passage 19, and is then introduced into the cargo bed box 12 via the first communication hole 15. As can be seen from this, the filter member 21 is located upstream of the first communication hole 15 in the direction of the flow of outside air flowing through the intake passage 19 when the vehicle 11 is in motion.

[0028] An air dam 26, which functions as a mounting base for the solar panel 18, is provided at the rear end of the intake duct 14, i.e., the right end in Figure 2. The air dam 26 is positioned on the rear side of the vehicle, i.e., the right side in Figure 2, behind the first communication hole 15 in the introduction passage 19, and acts as a shielding plate that closes the space between the roof panel 17 and the solar panel 18.

[0029] An air return plate 27 is positioned in the introduction passage 19, rearward of the vehicle from the first communication hole 15 and in front of the air dam 26, protruding from the roof panel 17 and blocking the space between the roof panel 17 and the solar panel 18. This air return plate 27, like the air dam 26, also serves as a shielding plate.

[0030] A waterproof cover 28 is positioned in the intake passage 19, protruding from a point in the roof panel 17 that is further forward than the first communication hole 15, and extending towards the rear of the vehicle above the first communication hole 15. As a result, outside air introduced into the intake passage 19 flows from the front to the rear of the vehicle, then wraps around the waterproof cover 28 from the rear to the front of the vehicle, and is then introduced into the cargo box 12 through the first communication hole 15.

[0031] The intake passage 19 is provided with water-stopping plates 29 and 30 that protrude from the roof panel 17 to block the flow of water toward the first communication hole 15 along the roof panel 17. The water-stopping plate 29 is positioned to surround the first communication hole 15 and extends in the width direction of the vehicle 11. The water-stopping plate 30 is positioned between the first communication hole 15 and the air return plate 27 and extends in the width direction of the vehicle 11.

[0032] The roof panel 17 is sloped downwards toward both sides in the width direction of the vehicle 11. Therefore, once water is separated from the outside air in the introduction passage 19 before the outside air flows into the first communication hole 15, the water flows along the water-stopping plates 29, 30, etc. toward both sides in the width direction of the vehicle 11. Furthermore, the water flows toward the front of the vehicle 11 toward both sides in the width direction of the vehicle 11 and is discharged downwards from the front end of the roof panel 17.

[0033] An opening panel 32 is installed inside the cargo box 12 so as to cover the first communication hole 15. The opening panel 32 has multiple openings 32a and 32b that open in different directions to the interior of the cargo box 12. Therefore, outside air that flows from the introduction passage 19 to the first communication hole 15 flows into the interior of the opening panel 32 through the first communication hole 15, and further flows into the interior of the cargo box 12 through the openings 32a and 32b of the opening panel 32. Opening 32a opens toward the front of the vehicle 11. Therefore, outside air passing through opening 32a is blown toward the front of the vehicle inside the cargo box 12. Opening 32b opens toward the rear of the vehicle 11. Therefore, outside air passing through opening 32b is blown toward the rear of the vehicle inside the cargo box 12.

[0034] <Structure around the second communication hole 16> As shown in Figure 5, the second communication hole 16 is formed near the rear end of the vehicle in the side panel 33 of the cargo bed box 12. The side panel 33 has an outlet passage 34 that leads the air inside the cargo bed box 12 to the outside. The second communication hole 16 is located at the opening of the outlet passage 34 to the inside of the cargo bed box 12. Therefore, as outside air is introduced into the cargo bed box 12 when the vehicle 11 is running, the air inside the cargo bed box 12 is led out to the outlet passage 34 via the second communication hole 16, and then led out to the outside from the outlet passage 34.

[0035] A filter member 35, similar to the filter member 21, is attached to the opening in the outlet passage 34 that leads to the interior of the cargo bed box 12, i.e., the second communication hole 16. Furthermore, a filter member 36, similar to the filter member 21, is attached downstream of the filter member 35 in the direction of airflow in the outlet passage 34. These filter members 35 and 36 are arranged to correspond to the airflow cross-section in the outlet passage 34. In other words, the filter members 35 and 36 are arranged to cover the entire airflow cross-section in the outlet passage 34.

[0036] An opening panel 37 is installed inside the cargo bed box 12 so as to cover the second communication hole 16. As shown in Figure 6, the opening panel 37 has a plurality of openings 37a, 37b, 37c, 37d, and 37e that open in different directions to the interior of the cargo bed box 12. Opening 37a opens toward the front of the vehicle 11, opening 37b opens toward the rear of the vehicle 11, and opening 37c opens toward the center in the width direction of the vehicle 11. Furthermore, opening 37d opens toward upward, and opening 37e opens toward downward.

[0037] Air inside the cargo bed box 12 flows into the opening panel 37 through the openings 37a, 37b, 37c, 37d, and 37e of the opening panel 37. Therefore, air from the cargo bed box 12 flows into the openings 37a, 37b, 37c, 37d, and 37e from different directions. This air is led out to the outlet passage 34 through the second communication hole 16 shown in Figure 5. The air led out to the outlet passage 34 is then led out to the outside of the cargo bed box 12 by passing through the outlet passage 34 from the front of the vehicle to the rear of the vehicle.

[0038] Next, the effects and advantages of the ventilation structure of the cargo box 12 in the vehicle 11 of this embodiment will be described. (1) When the vehicle 11 is in motion, outside air is introduced into the cargo box 12 through the intake passage 19. A filter member 21 for separating foreign matter from the outside air is positioned at the intake opening 20 of the intake passage 19 so as to correspond to the flow cross-section of the outside air in the intake passage 19. Therefore, the outside air introduced into the cargo box 12 from the intake passage 19 passes through the filter member 21 positioned in the intake passage 19. When the outside air passes through the filter member 21, foreign matter such as water contained in the outside air adheres to the filter member 21, thereby separating the foreign matter from the outside air. This effectively separates foreign matter from the outside air introduced into the cargo box 12 via the intake passage 19. As a result, it is possible to effectively suppress foreign matter from entering the cargo box 12 along with the outside air.

[0039] (2) When the vehicle 11 is in motion, outside air hits the front panel 24 of the cargo box 12 and flows upward. The outside air that flows upward in this manner hits the canopy 25 and is guided into the intake passage 19 located between the roof panel 17 of the cargo box 12 and the ceiling of the intake duct 14. Therefore, outside air can be efficiently introduced into the intake passage 19 when the vehicle 11 is in motion.

[0040] (3) When the vehicle 11 is in motion, outside air introduced into the intake passage 19 from the intake port 20 flows through the intake passage 19 into the first communication hole 15, and is then introduced into the cargo bed box 12 via the first communication hole 15. A filter member 21 is positioned at the intake port 20 of the intake passage 19. Therefore, before the outside air passing through the intake passage 19 is introduced into the cargo bed box 12 via the first communication hole 15, foreign matter such as water can be separated from the outside air by the filter member 21. In addition, on the vehicle rearward side of the intake passage 19 beyond the first communication hole 15, the space between the roof panel 17 and the ceiling of the intake duct 14 is closed by an air dam 26 and an air return plate 27. Therefore, the air dam 26 and air return plate 27 prevent the outside air passing through the intake passage 19 from flowing to the vehicle rearward side of the first communication hole 15 instead of flowing into the cargo bed box 12 via the first communication hole 15. As a result, outside air can be efficiently circulated into the cargo box 12 through the first communication hole 15.

[0041] (4) The outside air flows through the introduction passage 19 from the front to the rear of the vehicle, then wraps around the waterproof cover 28 from the rear to the front of the vehicle, and is introduced into the cargo box 12 through the first communication hole 15. Therefore, even if the outside air contains water that cannot be separated by the filter member 21, the water is separated from the outside air as the outside air wraps around the waterproof cover 28. In this way, the outside air from which the water has been separated can be introduced into the cargo box 12.

[0042] (5) The introduction passage 19 is provided with water-stopping plates 29 and 30 that protrude from the roof panel 17 to block the flow of water toward the first communication hole 15 along the roof panel 17. When outside air passes through the introduction passage 19, water contained in the outside air separates from the outside air and accumulates on the roof panel 17 of the cargo box 12. The water-stopping plates 29 and 30 can prevent this water from flowing toward the first communication hole 15. Therefore, it is possible to prevent the water from entering the interior of the cargo box 12 through the first communication hole 15.

[0043] (6) An opening panel 32 is installed inside the cargo box 12 so as to cover the first communication hole 15. The opening panel 32 has multiple openings 32a, 32b that open in different directions to the inside of the cargo box 12. Therefore, when cargo is loaded into the cargo box 12, even if one of the openings 32a, 32b of the opening panel 32 is blocked by the cargo, the possibility of the other openings 32a, 32b that open in different directions being blocked by the cargo is reduced. Thus, it is possible to prevent the first communication hole 15 from being blocked by the cargo inside the cargo box 12.

[0044] (7) When the vehicle 11 is in motion, outside air introduced into the cargo box 12 from the introduction passage 19 passes through the inside of the cargo box 12 and is then discharged to the outside through the discharge passage 34 via the second communication hole 16. Filter members 35 and 36, similar to the filter member 21, are attached to this discharge passage 34. Therefore, even if outside air enters the cargo box 12 through the discharge passage 34 due to natural wind when the vehicle 11 is stopped or wind when the vehicle 11 is moving in reverse, the filter members 35 and 36 can separate foreign matter such as water from the outside air. Thus, it is possible to prevent the outside air from entering the cargo box 12 together with foreign matter.

[0045] (8) An opening panel 37 is installed inside the cargo box 12 so as to cover the second communication hole 16. The opening panel 37 has multiple openings 37a, 37b, 37c, 37d, and 37e that open in different directions to the inside of the cargo box 12. One of the openings 37a, 37b, 37c, 37d, and 37e of the opening panel 32 may be blocked by the cargo loaded into the cargo box 12. However, the other openings 37a, 37b, 37c, 37d, and 37e that open in a different direction from the opening 37a, 37b, 37c, 37d, and 37e that are blocked by the cargo are less likely to be blocked by the cargo. Therefore, it is possible to prevent the second communication hole 16 from being blocked by the cargo inside the cargo box 12.

[0046] (9) The intake duct 14 is realized using the solar panel 18 and the structure for supporting the solar panel 18 on the roof panel 17. Therefore, the cost of installing the intake duct 14 on the cargo box 12 can be kept low.

[0047] The above embodiment can also be modified as follows, for example. The above embodiment and the following modifications can be combined and implemented to the extent that they do not contradict each other technically. The structure for introducing outside air into the cargo bed box 12 may be realized by providing a structure on the front panel 24 of the cargo bed box 12 that reverses the upstream and downstream airflow in the structure for guiding air out of the cargo bed box 12.

[0048] In a structure for venting air from the cargo bed box 12, it is not necessarily required to provide an opening panel 37. In the structure for discharging air from the cargo box 12, either or both of the filter member 35 and the filter member 36 may be omitted.

[0049] The intake duct 14 for introducing outside air into the cargo box 12 does not necessarily have to utilize the solar panel 18 and the structure for supporting the solar panel 18 on the roof panel 17.

[0050] • Either or both of the water-stopping plates 29 and 30 may be omitted. • A waterproof cover 28 is not necessarily required. Either the air dam 26 or the air return plate 27 may be omitted.

[0051] Regarding the canopy 25, it is not necessarily required to install it. [Explanation of symbols]

[0052] 11…Vehicles 12... Cargo bed box 14…Intake duct 15...1st communication hole 16…Second communication hole 17…Roof panel 18…Solar panels 19… Introduction passage 20... Inlet 21…Filter component 24…Front panel 25... Eaves 26…Air Dam 27…Air return plate 28…Waterproof cover 29, 30…Water stop plate 32…Opening panel 32a, 32b...opening 33... Side panel 34... Lead-out passage 35, 36… Filter components 37…Opening panel 37a, 37b, 37c, 37d, 37e...opening

Claims

1. In a vehicle where an intake passage is formed to introduce the vehicle's airflow as outside air into the cargo box, the ventilation structure of the cargo box in the cargo box is as follows: The system includes a filter member arranged to correspond to the airflow cross-section in the introduction passage, The filter member separates foreign matter contained in the outside air from the outside air while allowing the outside air to pass through. Above the roof panel of the aforementioned cargo box, a cover panel is positioned to form the introduction passage between it and the roof panel. The roof panel has a communication hole formed therein that connects the access passage and the inside of the cargo box. The filter member is located upstream of the communication hole in the direction of the flow of outside air through the introduction passage when the vehicle is in motion. A shielding plate is positioned behind the vehicle in the aforementioned introduction passage, beyond the communication hole, to block the space between the roof panel and the cover panel. The aforementioned access passage extends from the front of the vehicle towards the rear of the vehicle. A ventilation structure for a cargo bed box in a vehicle, wherein the introduction passage is provided with a waterproof cover that protrudes from a location in the roof panel that is further forward than the communication hole and extends towards the rear of the vehicle above the communication hole.

2. In a vehicle where an intake passage is formed to introduce the vehicle's airflow as outside air into the cargo box, the ventilation structure of the cargo box in the cargo box is as follows: The system includes a filter member arranged to correspond to the airflow cross-section in the introduction passage, The filter member separates foreign matter contained in the outside air from the outside air while allowing the outside air to pass through. Above the roof panel of the aforementioned cargo box, a cover panel is positioned to form the introduction passage between it and the roof panel. The roof panel has a communication hole formed therein that connects the access passage and the inside of the cargo box. A ventilation structure for a cargo bed box in a vehicle, wherein the introduction passage is provided with a water-stopping plate that protrudes from the roof panel and prevents the flow of water along the roof panel toward the communication hole.

3. The ventilation structure for a cargo bed box in a vehicle according to claim 1 or 2, wherein a canopy is formed at the front end of the cover panel for the purpose of guiding outside air that hits the front panel of the cargo bed box and flows upward when the vehicle is in motion into the intake passage.

4. An opening panel is installed inside the cargo bed box so as to cover the communication hole, The ventilation structure for a cargo bed box in a vehicle according to claim 1 or 2, wherein the opening panel has a plurality of openings that open in different directions to the interior of the cargo bed box.

5. An outlet passage is formed to guide the air inside the cargo bed box to the outside. The ventilation structure for a cargo bed box in a vehicle according to claim 1 or 2, wherein the filter member is also arranged in the outlet passage so as to correspond to the cross-section of the airflow in the outlet passage.

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