JP2024122555A - Work vehicles - Google Patents

Abstract

To solve the problem that in a tractor in which an air conditioning unit is mounted on a cabin, the air conditioning unit is arranged at a lower side of a seat in the cabin and an air-conditioning duct and the like is arranged from the lower side of the seat, so that a living space of the cabin becomes narrow; and provide a work vehicle having a cabin securing a wide living space.SOLUTION: A work vehicle comprises: a front duct 33F which guides air-conditioning air discharged from an air conditioning unit 30 mounted at one of right and left side on an upper side of a cabin 23 into a front part air outlet port 34a, 34b at a front side in the cabin 23 and a side part air outlet port 34c, 34d at the other side that is an opposite side to the side where the air conditioning unit 30 is mounted; and a rear duct 33R which guides the air-conditioning air into a side part air outlet port 34e at the side where the air-conditioning unit 30 is mounted in the cabin 23 and a rear part air outlet port 34f at a rear part side.SELECTED DRAWING: Figure 4

Description

The present invention relates to a work vehicle equipped with a cabin.

Conventionally, there are tractors that have an air conditioning unit installed in the cabin in which the operator sits (see Patent Document 1).

JP 2012-224278 A

However, the air conditioning unit is located below the seats in the cabin, and locating the air conditioning ducts from below the seats would narrow the living space in the cabin, reducing the driver's ability to control the vehicle and making the driver feel more likely to feel claustrophobic or oppressive, resulting in increased physical and mental fatigue.

The present invention has been made in consideration of the above, and provides a work vehicle equipped with a cabin that ensures a spacious living space.

The invention described in claim 1 is a work vehicle equipped with a traveling device 4 and a cabin 23 in which a driver sits, and is provided with a front duct 33F that guides the conditioned air discharged from an air conditioning unit 30 provided on one of the upper left and right sides of the cabin 23 to front air outlets 34a, 34b on the front side of the cabin 23 and side air outlets 34c, 34d on the other left and right sides opposite the side on which the air conditioning unit 30 is provided, and a rear duct 33R that guides the conditioned air to the side air outlet 34e on the side on which the air conditioning unit 30 is provided in the cabin 23 and the rear air outlet 34f on the rear side, and the front intake port 33Fa of the front duct 33F is wider than the rear intake port 33Ra of the rear duct 33R.

According to the invention described in claim 1, the air conditioning unit 30, the front duct 33F, the rear duct 33R, and the multiple air outlets 34a, 34b, 34c, 34d, 34e, and 34f are provided at the top of the cabin 23, so that a large living space can be secured inside the cabin 23.

In addition, by making the front intake 33Fa of the front duct 33F, which has a longer air blowing distance, wider than the rear intake 33Ra of the rear duct 33R, which has a shorter air blowing distance, conditioned air can be sent evenly from the air conditioning unit 30 to the multiple air outlets 34a, 34b, 34c, 34d, 34e, and 34f around the inside of the cabin 23, making it possible to change the temperature inside the cabin 23 as evenly as possible and creating an environment that is easy to work in.

The invention described in claim 2 is a work vehicle described in claim 1 in which conditioned air is guided to a storage chamber 32 that keeps PET bottles 30a, 30b, canned bottles, etc., cool and/or warm through a rear duct 33R, and a rear air outlet 34f is provided in the storage chamber 32.

According to the invention described in claim 2, the rear duct 33R guides conditioned air to the storage compartment 32 that keeps PET bottles 30a, 30b and canned bottles cool and/or warm, and the storage compartment 32 is provided with a rear air outlet 34f, so that the storage compartment 32 can be positioned using the conditioned air guide path, ensuring a large living space in the cabin 23.

The invention described in claim 3 is a work vehicle described in claim 2 in which the storage compartment 32 is disposed on the rear side of the cabin 23, its bottom is located above the bottom of the air conditioning unit 30, a rear air outlet 34f is provided on the opening and closing door 32a of the storage compartment 32, the upper side of the opening and closing door 32a of the storage compartment 32 opens downward toward the front on a pivot shaft provided at the bottom, and the storage compartment 32 and the rear air outlet 34f are located behind the operator's seat 21.

According to the invention described in claim 3, the storage 32 is disposed at the rear side of the cabin 23, and its bottom is positioned higher than the bottom of the air conditioning unit 30, so that a large living space can be secured within the cabin 23.

In addition, a rear air outlet 34f is provided on the opening and closing door 32a, which further reduces the space required for the air conditioning unit.

In addition, the opening and closing door 32a of the storage compartment 32 is configured so that the upper side opens downward toward the front on a pivot shaft provided at the bottom, and the storage compartment 32 and the rear air outlet 34f are located behind the operator's seat 21, so that conditioned air can be sent to the rear of the operator's seat 21, improving the comfort of the cabin 23. Even if the opening and closing door 32a opens unintentionally and the plastic bottles 30a, 30b, etc. inside fall out, the positioning ensures safety by making it unlikely for them to hit the pilot seated in the operator's seat 21.

The invention described in claim 4 is the work vehicle described in claim 2 in which a storage compartment 32 is disposed behind the rear duct 33R, which is biased toward the interior side of the cabin 23 behind the air conditioning unit 30, and a position information acquisition device 31 that acquires vehicle position information is disposed in the space formed by the air conditioning unit 30 and the storage compartment 32 at a rear position within the left-right width of the air conditioning unit 30.

According to the invention described in claim 4, the air conditioning unit 30, rear duct 33R, storage 32, and position information acquisition device 31 can be arranged compactly by utilizing the upper space of the cabin 23, thereby ensuring a large living space inside the cabin 23.

The invention described in claim 5 is a work vehicle described in any one of claims 2 to 4, in which a recess 32c is provided on the inner bottom surface of the storage bay 32 to prevent the bottle 30a from rolling, and a space 25a is provided between the storage bay 32 and the cabin roof 25.

According to the invention described in claim 5, a recess 32c is provided on the inner bottom surface of the storage 32 to prevent the bottles 30a from rolling, so the bottles 30a stored therein can be prevented from rolling due to the movement or vibration of the aircraft, and can be prevented from falling into the cabin 23 when the opening and closing door 32a is pushed open.

In addition, a space 25a is provided between the storage room 32 and the cabin roof 25, so that heat from the cabin roof 25 is not directly transferred to the storage room 32.

The invention described in claim 6 is a work vehicle described in any one of claims 2 to 4, in which the monitor 35 is placed in a portion of the cabin 23 where the interior space is enlarged by curving the front duct 33F, and the front air outlets 34a, 34b located at the top of the windshield 28 blow conditioned air toward the bottom of the windshield 28.

According to the invention described in claim 6, the monitor 35 is placed in a portion of the cabin 23 where the interior space is enlarged by curving the front duct 33F, so that the living space of the cabin 23 can be made larger and the monitor 35 can be placed in a location where it is easily visible, enabling efficient work.

In addition, the front air outlets 34a, 34b located at the top of the windshield window 28 blow conditioned air toward the bottom of the windshield window 28, which also serves as an anti-fogging function (defroster) for the windshield window 28, preventing a decrease in visibility.

The invention described in claim 7 is a work vehicle described in any one of claims 2 to 4, in which the cabin roof 25 protrudes forward of the windshield window 28 at the front of the cabin 23, and the wiper 40 of the windshield window 28 is stored under the front protruding portion of the cabin roof 25 when not in operation.

According to the invention described in claim 7, the cabin roof 25 protrudes forward of the windshield window 28 at the front of the cabin 23, and the wipers 40 of the windshield window 28 are stored under the front protruding portion of the cabin roof 25 when not in operation, thereby improving forward visibility.

FIG. 1 is a left side view of a combine harvester according to an embodiment of the present invention. FIG. 2 is a right side view of the combine harvester according to the embodiment of the present invention. 1 is a plan view of a combine harvester according to an embodiment of the present invention. 1 is a plan cross-sectional view of a cabin of a combine harvester according to an embodiment of the present invention. FIG. 2 is a right-side cross-sectional view of a cabin of a combine harvester according to an embodiment of the present invention. 1 is a front cross-sectional view of a main part of a cabin of a combine harvester according to an embodiment of the present invention. 1 is a right-side cross-sectional view of a main part of a cabin of a combine harvester according to an embodiment of the present invention. FIG. 1 is a cross-sectional view for explaining the operation of a hot and cold storage unit of a combine harvester according to an embodiment of the present invention. FIG. 1 is a front cross-sectional view of a main part of a cabin of a combine harvester according to an embodiment of the present invention. 1 is a bottom cross-sectional view of a cabin of a combine harvester according to an embodiment of the present invention. FIG. 1 is a front cross-sectional view of a main part of a cabin of a combine harvester according to an embodiment of the present invention. 1 is a right-side cross-sectional view of a main part of a cabin of a combine harvester according to an embodiment of the present invention. FIG. 1 is a left side cross-sectional view of a main part of a cabin of a combine harvester according to an embodiment of the present invention. FIG.

The following describes a combine harvester 1, which is an example of a work vehicle according to an embodiment of the present invention, with reference to the attached drawings. Note that to facilitate understanding, directions are conveniently indicated as the front side, the rear side, the right hand side, and the left hand side as seen by the operator, but the configuration is not limited to these.

<Overall configuration of the combine>
1 to 3, the combine harvester 1 has a traveling device 4 on the lower side of a chassis 2, on which a pair of left and right traveling crawlers 3 are stretched, which travel on the soil surface, and on the left and right sides of the chassis 2, a threshing device 6 that threshes and sorts the stalks that are clamped and transported by a feed chain 5, a grain tank 7 as a storage device for temporarily storing the grains, and a grain discharging auger 8 that discharges the grains stored in the grain tank 7 to the outside of the machine, and a straw disposal device 9 is mounted on the rear end of the threshing device 6. The grain discharging auger 8 is raised and lowered by operating an auger lifting cylinder when discharging grains.

In front of the threshing device 6, a harvesting device 15 is suspended from the front end of the chassis 2 so that it can be raised and lowered freely relative to the soil surface by a harvesting lifting cylinder. The harvesting device 15 has a grass dividing body 11 that divides the uncut stalks from the front end, a raising section 12 that raises the divided stalks, a cutting blade section 13 that cuts the raised stalks, and a supply adjustment transport section that rakes in the harvested stalks and adjusts the handling depth during transport and transfers them to the feed chain 5.

The upper rear part of the harvesting device 15 is provided with an operating device for controlling the operation of the combine harvester 1, and an operating seat 21 where the operator sits. An engine 22 is mounted below the operating seat 21, and the grain tank 7 is located at the rear. A cabin 23 is provided to cover the operating device and operating seat 21. The traveling device 4, threshing device 6, harvesting device 15, operating device, engine 22, cabin 23, etc. are mounted on the chassis 2 of the combine harvester.

The monitor 35 installed in the cabin 23 also displays a grain tank full alarm when the full sensor detects that the grain tank 7 is full of grain, a fuel out alarm when the fuel out sensor detects that there is little fuel remaining in the fuel tank, and various other support messages from the control device.

The operating device is equipped with various operating tools such as a main speed change lever that operates a speed change actuator that switches between forward/reverse travel and stopping and main speed change when operated forward/reverse by an operator seated in the operating seat 21, a left/right traveling actuator that operates the left/right side clutches and left/right side brakes of the left/right traveling crawlers 3, 3 when tilted left/right to perform left/right steering when traveling straight and turning in various turning modes, and a steering lever that operates the harvesting lifting cylinder when operated forward/backward to raise/lower the harvesting device 15, a harvesting/removal lever that operates the harvesting/removal clutch actuator to turn the harvesting device 15 and the threshing device 6 on and off, an auger operating lever that moves the position of the discharge port 8a at the tip of the threshing auger 8 up and down by operating the auger lifting cylinder and left and right by operating the left/right turning actuator, and an auger drive switching lever that operates the auger drive electromagnetic clutch that turns the drive of the threshing auger 8 on and off to discharge the grains in the grain tank 7 from the discharge port 8a to the outside of the machine.

<Cabin 23>
As shown in Figures 1 to 3, the cabin 23 is configured in a box shape with a cabin roof 25 provided on the upper part of a cabin frame 24 whose base is fixed to the chassis 2, and is equipped with a door 26 that opens and closes at the front and has a right glass window 26a on the right side, a left glass window 27 on the left side, a windshield window 28 on the front side, and a rear glass window 29 on the rear side.

As shown in Figures 4 to 7, an air conditioning unit 30 is provided in the upper left central position in the front-to-rear direction inside the cabin 23, and a GNSS unit 31 as a location information acquisition device and a hot/cold storage unit 32 as a storage unit for keeping PET bottles 30a, 30b, canned bottles, etc., cold and hot are provided behind the air conditioning unit 30.

The GNSS unit 31 is positioned within the left-right width of the air conditioning unit 30, and the hot/cold storage unit 32 is positioned so that its left side overlaps with the right side of the air conditioning unit 30.

In addition, by arranging the GNSS unit 31 within the front-to-rear width of the hot/cold storage unit 32, it can be positioned without protruding beyond the rear of the cabin 23.

As a result, the air conditioning unit 30, GNSS unit 31, and hot/cold storage 32 can be compactly arranged in the upper left space inside the cabin 23.

In addition, the GNSS unit 31 and the hot/cold storage unit 32 are positioned by utilizing the dead space behind the air conditioning unit 30, and the air conditioning unit 30 and the hot/cold storage unit 32 are positioned so that they overlap in the left-right direction, making it possible to effectively utilize the space within the cabin 23 and preventing the unit from protruding significantly into the living space within the cabin 23 or protruding outside the cabin 23.

In addition, by installing the GNSS unit 31 inside the cabin 23, the appearance is improved.

The underside of the GNSS unit 31 is configured to be higher than the underside of the hot/cold storage unit 32, improving rear visibility.

The GNSS unit 31 is positioned to the left of the left end of the operator's seat 21, ensuring a spacious interior space.

The front duct 33F extends from the front right side of the air conditioning unit 30 toward the front of the upper part of the cabin 23, curves (detouring) so that it juts out to the left in front of the air conditioning unit 30, then extends from the left side to the right side of the front part of the cabin 23, and further extends rearward on the right side of the cabin 23 to the right side of the operator's seat 21.

The front duct 33F has left and right front air outlets 34a, 34b at the front of the cabin 23, and front and rear right air outlets 34c, 34d at the right of the cabin 23 as side air outlets.

The left and right front air outlets 34a, 34b located at the front of the cabin 23 are configured to blow conditioned air downward and also serve to prevent fogging of the windshield window 28 (defroster).

The monitor 35 is located in the area where the front left part of the front duct 33F is curved (detouring) to make the interior space of the cabin 23 larger.

The monitor 35 is attached so that it is embedded into the interior side of the interior panel 36, creating a sense of unity and a good appearance, as if it were embedded in the interior panel 36.

The monitor 35 is also positioned above the underside of the interior panel 36 to prevent light reflections, and is located to the left of the rearview mirror (or rearview monitor) 37 located in the center of the front left and right, making it easy for the operator seated in the operator's seat 21 to see.

In addition, a rear duct 33R is extended from the rear right side of the air conditioning unit 30 in a bifurcated manner toward the front and rear of the upper part of the cabin 23, and a left front air outlet 34e is provided as a side air outlet at the part where the rear duct 33R extended toward the front reaches the left side of the operator's seat 21, and the end extended toward the rear opens at the top of the hot and cold storage 32 to blow conditioned air into the hot and cold storage 32, and a left rear air outlet 34f is provided as a rear air outlet on the opening door 32a, so that conditioned air can be blown out to the rear of the operator's seat 21 to condition the back of the pilot.

The front intake port 33Fa at the base of the front duct 33F, which is connected to the front side of the right side of the air conditioning unit 30, is wider than the rear intake port 33Ra at the base of the rear duct 33R, which is connected to the rear side of the right side of the air conditioning unit 30.

Therefore, the front duct 33F is a long duct that runs from the left to the right through the front inside the cabin 23, where the four left and right front air outlets 34a, 34b and the front and rear right air outlets 34c, 34d are provided, but a sufficient volume of conditioned air can be secured from the air conditioning unit 30 through the wide front intake port 33Fa, allowing for good air conditioning.

In addition, the rear duct 33R has a relatively short path for blowing out conditioned air from the left front air outlet 34e near the air conditioning unit 30 and the left rear air outlet 34f via the hot/cold storage unit 32, so a sufficient air conditioning effect can be obtained even from the air conditioning unit 30 through the narrow rear intake 33Ra.

In addition, conditioned air is blown from the air conditioning unit 30 to the hot/cold storage 32 through the rear duct 33R, and fresh conditioned air is blown into the hot/cold storage 32 before being blown out from the left rear air outlet 34f, so the inside of the hot/cold storage 32 can always be cooled or heated with fresh conditioned air.

In addition, conditioned air is blown from the air conditioning unit 30 through the rear duct 33R to an upper position inside the hot/cold storage unit 32 and then blown out from the lower left rear air outlet 34f into the cabin 23, so the cooling and heating efficiency of the hot/cold storage unit 32 is excellent.

In addition, the left rear air outlet 34f is provided on the door 32a of the hot/cold storage unit 32, so it can be placed without having to provide additional space for the outlet, resulting in a simple and inexpensive configuration.

The front duct 33F and rear duct 33R are integrally formed from synthetic resin, and although they are separate front and rear ducts, by forming them integrally, manufacturing costs can be reduced without increasing the number of parts.

The underside of the hot/cold storage unit 32 is positioned higher than the underside of the air conditioning unit 30, ensuring a large space inside the cabin 23.

The hot/cold storage unit 32 is located in the upper left rear of the cabin 23 and does not obstruct the forward visibility of the pilot seated in the operator's seat 21.

The hot/cold storage 32 is located behind the operator's seat 21. Therefore, even if the plastic bottles 30a, 30b, etc. inside the hot/cold storage 32 fall, they will not hit the operator sitting in the operator's seat 21.

The hot/cold storage unit 32 is located near the backrest of the operator's seat 21. Therefore, the hot/cold storage unit 32 is not far from the operator's seat 21, which is the pilot's seat, making it easy to use.

The door 32a of the hot/cold storage 32 has a pivot shaft in the front-to-rear direction at the bottom end, and the top opens downward toward the front, so that the plastic bottles 30a, 30b, etc. placed inside will not fall out even if the door 32a is opened. In addition, a hook 32b that can be operated from the outside is provided at the top of the door 32a to keep it closed.

Hoses 30c of the air conditioning unit 30 are routed underneath the hot/cold storage unit 32, making effective use of the space underneath the hot/cold storage unit 32.

The rear left glass window 27a, located behind the left glass window 27, extends to the bottom of the hot/cold storage unit 32, improving visibility to the rear left.

As shown in FIG. 8, the hot/cold storage 32 can accommodate two 500 ml PET bottles 30a horizontally, or three 350 ml PET bottles 30b vertically.

As shown in FIG. 9, the hot/cold storage 32 has a recess 32c on the inside bottom surface to prevent a 500 ml plastic bottle 30a from rolling when stored horizontally.

A space 25a is provided between the top surface of the hot/cold storage unit 32 and the cabin roof 25, so that the temperature of the cabin roof 25 is not directly transferred to the hot/cold storage unit 32.

As shown in FIG. 10, the base of the mounting portion 35a of the monitor 35 is attached to a monitor mounting hole 35b provided on the underside of the interior panel 36, giving the monitor 35 a neat appearance.

The bottom of the hot/cold storage unit 32 is attached to the cold storage unit mounting hole 32d provided on the underside of the interior panel 36, giving it a neat appearance.

In the above embodiment, an example of a hot/cold storage unit 32 is shown as a storage unit, but it may be a cold storage unit that operates using cold air from the air conditioning unit 30, or a warm storage unit that operates using hot air from the air conditioning unit 30.

In summary, the air conditioning unit 30, front duct 33F, rear duct 33R, and multiple air outlets 34a, 34b, 34c, 34d, 34e, and 34f are provided at the top of the cabin 23, ensuring a large living space inside the cabin 23.

In addition, by making the front intake 33Fa of the front duct 33F, which has a longer air blowing distance, wider than the rear intake 33Ra of the rear duct 33R, which has a shorter air blowing distance, conditioned air can be sent evenly from the air conditioning unit 30 to the multiple air outlets 34a, 34b, 34c, 34d, 34e, and 34f around the inside of the cabin 23, making it possible to change the temperature inside the cabin 23 as evenly as possible and creating an environment that is easy to work in.

In addition, the rear duct 33R guides the conditioned air to the hot/cold storage 32 that keeps PET bottles 30a, 30b and canned bottles cool or warm, and the hot/cold storage 32 is provided with a rear air outlet 34f, so the hot/cold storage 32 can be positioned using the conditioned air guide path, ensuring a large living space inside the cabin 23.

In addition, the hot/cold storage 32 is located at the rear of the cabin 23, and its bottom is positioned higher than the bottom of the air conditioning unit 30, ensuring a large living space inside the cabin 23.

In addition, a rear air outlet 34f is provided on the opening and closing door 32a, which further reduces the space required for the air conditioning unit.

In addition, the door 32a of the hot/cold storage 32 is configured to open downwards toward the front on a pivot shaft provided at the bottom, and the hot/cold storage 32 and the rear air outlet 34f are located behind the operator's seat 21, so that conditioned air can be sent to the rear of the operator's seat 21, improving the comfort of the cabin 23. Even if the door 32a opens unintentionally and the plastic bottles 30a, 30b, etc. inside fall out, the positioning ensures safety by making it unlikely for them to hit the operator seated in the operator's seat 21.

In addition, the air conditioning unit 30, rear duct 33R, hot/cold storage 32, and location information acquisition device 31 can be arranged compactly by utilizing the upper space of the cabin 23, ensuring a spacious living space inside the cabin 23.

In addition, the monitor 35 is placed in a location where the front duct 33F is curved to enlarge the interior space of the cabin 23, ensuring a large living space in the cabin 23 and allowing the monitor 35 to be placed in a location where it is easily visible, enabling efficient work.

In addition, the front air outlets 34a, 34b located at the top of the windshield window 28 blow conditioned air toward the bottom of the windshield window 28, which also serves as an anti-fogging function (defroster) for the windshield window 28, preventing a decrease in visibility.

As shown in Figures 11 to 13, a wiper 40 is installed on the upper outer surface of the windshield window 28.

The cabin roof 25 protrudes forward beyond the windshield window 28 at the front of the cabin 23.

The wiper 40 has a typical structure in which its base is supported so as to be freely rotatable on an offset plate 39 fixed to the front protrusion of the cabin roof 25, and when not in operation, it is stored in a horizontal position beneath the front protrusion of the cabin roof 25.

As a result, the wiper 40 is stored under the front protrusion of the cabin roof 25 when not in operation, improving forward visibility.

A wiper motor 41 that drives the wiper 40 is provided inside the front end of the cabin roof 25. The drive shaft 41a of the wiper motor 41 passes through the offset plate 39, and by operating the rotary link mechanism of the wiper 40, the wiper 40 rotates back and forth between a horizontal inoperative position and a position facing vertically downward, wiping off water droplets and dirt adhering to the outer surface of the windshield window 28.

A washer nozzle 42 is provided in the center of the left and right of the offset plate 39, and the washer pump is activated by operating the operating device to spray cleaning water onto the outer surface of the windshield window 28.

4 Traveling device 21 Operation seat 23 Cabin 25 Cabin roof 25a Space 28 Windshield window 30 Air conditioning unit 30a Plastic bottle 30b Plastic bottle 31 Position information acquisition device (GNSS unit)
32 Storage (warm/cold)
32a Opening and closing door 32c Recess 33F Front duct 33Fa Front intake port 33R Rear duct 33Ra Rear intake port 34a Front air outlet (left front air outlet)
34b Front air outlet (right front air outlet)
34c Side air outlet (front right air outlet)
34d Side air outlet (rear right air outlet)
34e Side air outlet (left front air outlet)
34f Rear air outlet (left rear air outlet)
35 Monitor 40 Wiper

Claims (7)

A work vehicle equipped with a running gear (4) and a cabin (23) in which a driver sits, the work vehicle is provided with a front duct (33F) that guides the conditioned air discharged from an air conditioning unit (30) provided on one of the upper left and right sides of the cabin (23) to front air outlets (34a, 34b) on the front side of the cabin (23) and side air outlets (34c, 34d) on the other left and right sides opposite the side on which the air conditioning unit (30) is provided, and a rear duct (33R) that guides the conditioned air to a side air outlet (34e) on the side on which the air conditioning unit (30) is provided in the cabin (23) and a rear air outlet (34f) on the rear side, and the front intake port (33Fa) of the front duct (33F) is wider than the rear intake port (33Ra) of the rear duct (33R). A work vehicle as described in claim 1, characterized in that the rear duct (33R) guides conditioned air to a storage compartment (32) for keeping PET bottles (30a, 30b), canned bottles, etc., cool and/or warm, and a rear air outlet (34f) is provided in the storage compartment (32). The work vehicle according to claim 2, characterized in that the storage compartment (32) is disposed on the rear side of the cabin (23), its bottom is located above the bottom of the air conditioning unit (30), a rear air outlet (34f) is provided on the opening and closing door (32a) of the storage compartment (32), the opening and closing door (32a) of the storage compartment (32) is configured so that the upper side opens toward the front and downward on a pivot shaft provided at the bottom, and the storage compartment (32) and the rear air outlet (34f) are located behind the operator's seat (21). A work vehicle according to claim 2, characterized in that a storage compartment (32) is disposed behind a rear duct (33R) biased toward the interior side of the cabin (23) behind the air conditioning unit (30), and a position information acquisition device (31) for acquiring vehicle position information is disposed in a space formed by the air conditioning unit (30) and the storage compartment (32) at a rear position within the left-right width of the air conditioning unit (30). The work vehicle according to any one of claims 2 to 4, characterized in that a recess (32c) is provided on the inner bottom surface of the storage (32) to prevent the bottle (30a) from rolling, and a space (25a) is provided between the storage (32) and the cabin roof (25). A work vehicle according to any one of claims 2 to 4, characterized in that the monitor (35) is placed in a portion of the cabin (23) where the interior space is enlarged by curving the front duct (33F), and the front air outlets (34a, 34b) located at the top of the windshield window (28) blow conditioned air toward the bottom of the windshield window (28). A work vehicle as described in any one of claims 2 to 4, characterized in that the cabin roof (25) protrudes forward of the windshield window (28) at the front of the cabin (23), and the windshield window wiper (40) is stored under the front protruding portion of the cabin roof (25) when not in operation.