Backpack unit

Abstract

To disclose a technology capable of suppressing a user from feeling hot when the user shoulders a shouldering unit.SOLUTION: A shouldering unit includes a body and a base member. The body is provided with a cooling fan. The base member is provided with: a back plate fitted to the body; and a harness fitted to the back plate and worn by a user. The harness is provided with a cooling port and at least one shoulder belt worn by the user's shoulder. The cooling fan flows in or flows out the cooling air via the cooling port of the base member.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a backpack unit. [Background technology]

[0002] Patent Document 1 discloses a backpack-type unit. The backpack-type unit includes a main body and a base member. The base member includes a back board attached to the main body and a harness attached to the back board and worn by the user. The harness includes at least one shoulder belt worn on the user's shoulders. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-109303 Summary of the Invention [Problem to be solved by the invention]

[0004] When a user wears such a backpack-type unit on their back, heat may build up where the base member comes into contact with the user's body, causing the user to feel hot. This specification discloses a technology that can prevent the user from feeling hot when wearing a backpack-type unit on their back. [Means for solving the problem]

[0005] The backpack-type unit disclosed herein includes a main body and a base member. The main body includes a cooling fan. The base member includes a back panel attached to the main body and a harness attached to the back panel and worn by a user. The harness includes a cooling port and at least one shoulder strap worn on the user's shoulders. The cooling fan directs cooling air in or out through the cooling port in the base member.

[0006] According to the above configuration, the cooling fan can be operated while the user is wearing the backpack-type unit, thereby cooling the user's body, thereby preventing the user from feeling too hot when wearing the backpack-type unit. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a perspective view of the backpack-type unit 2 of the first embodiment. [Figure 2] 1 is a block diagram of a main body 4 of the first embodiment. [Figure 3] FIG. 2 is a rear view of the base member 6 of the first embodiment. [Figure 4] FIG. 2 is a front view of the base member 6 of the first embodiment. [Figure 5] FIG. 2 is a cross-sectional view of the main body 4 of the first embodiment. [Figure 6] FIG. 10 is a front view of the base member 6 of the first embodiment with the shoulder belts 54 and waist belt 58 in an open position. [Figure 7] FIG. 2 is a cross-sectional view of the harness 34 of the first embodiment with the shoulder belt 54 and waist belt 58 open. [Figure 8] FIG. 10 is a front view of a base member 6 of a second embodiment. [Figure 9] FIG. 10 is a cross-sectional view of a harness 34 of a second embodiment with shoulder belts 54 and waist belt 58 open. [Figure 10] FIG. 10 is a front view of a base member 6 of a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Representative, non-limiting embodiments of the present invention will now be described in detail with reference to the drawings. This detailed description is intended simply to provide those skilled in the art with details for implementing preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Additionally, additional features and inventions disclosed below can be used separately or in conjunction with other features and inventions to provide further improved backpack units, methods of making and using the same.

[0009] Furthermore, the combinations of features and steps disclosed in the following detailed description are not essential to practicing the invention in its broadest sense, but are described solely to specifically illustrate exemplary embodiments of the invention. Furthermore, the various features of the exemplary embodiments described above and below, and those described in the independent and dependent claims, do not necessarily have to be combined in the exact embodiments described herein, or in the exact order listed, to provide additional and useful embodiments of the invention.

[0010] All features described in this specification and / or claims are intended to be disclosed individually and independently of one another as limitations on the original disclosure and claimed particulars, apart from any configuration of features described in the examples and / or claims. Furthermore, all numerical ranges and group or aggregation descriptions are intended to disclose intermediate configurations thereof as limitations on the original disclosure and claimed particulars.

[0011] In one or more embodiments, the cooling port may be positioned near the user when the user is wearing the harness.

[0012] According to the above configuration, when cooling air flows in or out through the cooling port, the cooling air flows near the user's body, which can further reduce the user's feeling of heat when wearing the backpack unit.

[0013] In one or more embodiments, when the user is wearing the harness, the cooling ports may face the user.

[0014] According to the above configuration, when cooling air flows in or out through the cooling port, the cooling air flows along the surface of the user's body, which can further reduce the user's feeling of heat when wearing the backpack unit.

[0015] In one or more embodiments, the harness may further include a back pad that contacts the user's back when the user is wearing the harness, and the cooling ports may face the portion of the user's back that is in contact with the back pad when the user is wearing the harness.

[0016] When a harness includes a back pad, the back pad comes into contact with the user's back, which can easily trap heat in the user's back. According to the above configuration, when cooling air flows in or out through the cooling port, the cooling air flows along the surface of the portion of the user's back that comes into contact with the back pad. This further reduces the user's feeling of heat when wearing the backpack-type unit.

[0017] In one or more embodiments, the harness may further include a back pad that contacts the user's back when the user wears the harness. When the user wears the harness, a non-contact space may be formed between the user's back and the backboard, where the back pad is not disposed. The cooling port may face the non-contact space when the user wears the harness.

[0018] When a harness is equipped with a back pad, the back pad comes into contact with the user's back, which tends to trap heat in the user's back. With the above configuration, when cooling air flows in or out through the cooling port, the cooling air flows along the surface of the user's back in a non-contact space. This further reduces the user's feeling of heat when wearing the backpack-type unit.

[0019] In one or more embodiments, the cooling ports may be located in the shoulder belt.

[0020] When a user wears a backpack-type unit, the shoulder straps come into contact with the user's shoulders, which can easily cause heat to build up in the user's shoulders. With the above configuration, when cooling air flows in or out through the cooling port, the cooling air flows along the surface of the user's shoulders. This can further reduce the user's feeling of heat when wearing the backpack-type unit.

[0021] In one or more embodiments, the harness may further comprise a waist belt that is worn around the waist of the user, and the cooling port may be located in the waist belt.

[0022] When the harness is equipped with a waist belt, the waist belt comes into contact with the user's waist, which tends to trap heat in the user's waist. With the above configuration, when cooling air flows in or out through the cooling port, the cooling air flows along the surface of the user's waist. This can further reduce the user's feeling of heat when wearing the backpack-type unit.

[0023] In one or more embodiments, the harness may further include a waist belt that is worn around the waist of the user and a cooling port located in the waist belt. The cooling fan may direct cooling air in or out through the cooling ports located in the shoulder belt and the cooling port located in the waist belt.

[0024] When the harness is equipped with a waist belt, the waist belt comes into contact with the user's waist, which tends to trap heat in the user's waist. With the above configuration, when cooling air flows in or out through the cooling port located in the waist belt, the cooling air flows along the surface of the user's waist. This can further reduce the user's feeling of heat when wearing the backpack-type unit.

[0025] In one or more embodiments, the main body may include a battery that powers the cooling fan.

[0026] According to the above configuration, even if the backpack-type unit does not have an external power source that supplies power to the cooling fan, the cooling fan can be operated.

[0027] In one or more embodiments, the body may be connectable to an electric implement having a motor, and the battery may provide power to the motor of the electric implement.

[0028] According to the above configuration, when a user carries a backpack-type unit that supplies power to an electric work machine, the user can be prevented from feeling hot.

[0029] In one or more embodiments, the cooling fan may be configured to have an adjustable airflow rate.

[0030] According to the above configuration, the air volume of the cooling fan can be adjusted according to the degree of heat felt by the user.

[0031] In one or more embodiments, the main body may include an operating portion for operating the cooling fan.

[0032] According to the above configuration, the user can control the operation of the cooling fan via the operation unit.

[0033] In one or more embodiments, the operating unit may include a switch for switching the cooling fan between an on state and an off state.

[0034] According to the above configuration, the user can operate the cooling fan when desired by operating the changeover switch.

[0035] In one or more embodiments, the cooling fan may be configured to have an adjustable airflow rate, and the operation unit may include an airflow rate adjustment switch for adjusting the airflow rate of the cooling fan.

[0036] According to the above configuration, the user can adjust the air volume of the cooling fan to a desired air volume by operating the air volume adjustment switch.

[0037] In one or more embodiments, the harness may include an air passageway in communication with the cooling port, and when the cooling fan is activated, cooling air may flow through the air passageway.

[0038] According to the above configuration, the cooling air flows through the air flow path, thereby cooling the harness, which further reduces the user's feeling of heat when wearing the backpack-type unit.

[0039] (First Example) A backpack-type unit 2 according to an embodiment will be described with reference to Figures 1 to 5. The backpack-type unit 2 is used by being carried on the back of a user. Hereinafter, when the backpack-type unit 2 is carried on the back of a user, the direction perpendicular to the user's back will be referred to as the front-to-back direction, the direction perpendicular to the front-to-back direction will be referred to as the up-to-down direction, and the direction perpendicular to both the front-to-back direction and the up-to-down direction will be referred to as the left-to-right direction.

[0040] As shown in FIG. 1, the backpack-type unit 2 includes a main body 4 and a base member 6. The main body 4 is removably attached to the base member 6. In this embodiment, the main body 4 is a large backpack-type power supply device. The main body 4 weighs, for example, 5 to 10 kg. Charging power is supplied to the main body 4 from an external source via a power source (not shown) connected to the main body 4. The main body 4 is connected to an electric work machine (not shown) having a motor via a connection cord 22, and supplies discharged power to the motor. A user can carry the backpack-type unit 2 on their back and work by holding the electric work machine in their hands. By using the backpack-type unit 2, the user can use the electric work machine for long periods of time.

[0041] The main body 4 includes a main body casing 8, a handle 10, a battery 12 (see FIG. 2), a cooling fan 14, an operation unit 16 (see FIG. 4), and a control unit 18 (see FIG. 2). The handle 10 is rotatably attached to the upper part of the main body casing 8. When the user is not carrying the backpack-type unit 2 on his / her back, the handle 10 can be held by the user. By holding the handle 10, the user can detach the main body 4 from the base member 6 and easily carry it around.

[0042] The battery 12 shown in Fig. 2 is housed inside the main body casing 8. The battery 12 is, for example, a chargeable and dischargeable secondary battery. The power of the battery 12 is supplied via a connection cord 22 to an electric work machine (not shown) having a motor.

[0043] 1, the cooling fan 14 is attached to the lower left side of the main body casing 8. The cooling fan 14 is, for example, an axial flow fan. The cooling fan 14 is operated by power supplied from the battery 12.

[0044] As shown in FIG. 4, the operation unit 16 is attached to the main body casing 8 via a connection cord 24. The operation unit 16 includes a selector switch 26 and an airflow adjustment switch 28. The selector switch 26 switches the cooling fan 14 between an on state and an off state. The airflow adjustment switch 28 adjusts the airflow rate of the cooling fan 14. The airflow adjustment switch 28 is configured to switch between, for example, a strong airflow mode with a high airflow rate and a weak airflow mode with a low airflow rate.

[0045] 2 is housed inside the main body casing 8. The control unit 18 supplies power from the battery 12 to the cooling fan 14 in response to signals supplied from the selector switch 26 and the airflow adjustment switch 28.

[0046] 3, the base member 6 includes a back plate 32 and a harness 34. The main body 4 (see FIG. 1) is detachably attached to the back plate 32. The back plate 32 includes a first back plate 36 and a second back plate 38.

[0047] The first back panel 36 has two lower engagement portions 40, one upper engagement portion 42, a right-side attachment portion 44, and a left-side attachment portion 46. The two lower engagement portions 40 are disposed near the lower end of the first back panel 36. The one upper engagement portion 42 is disposed near the upper end of the first back panel 36. When the main body 4 (see FIG. 1) is attached to the back panel 32, the two lower engagement portions 40 and the one upper engagement portion 42 engage with the front surface of the main body casing 8 (see FIG. 1). The right-side attachment portion 44 is disposed near the right end of the lower part of the first back panel 36. The left-side attachment portion 46 is disposed near the left end of the lower part of the first back panel 36.

[0048] The second back panel 38 is attached to the upper part of the first back panel 36 from the front. The second back panel 38 protrudes from the upper part of the first back panel 36 on both the left and right sides, and the second back panel 38 has two right-side mounting portions 48 and two left-side mounting portions 50. The two right-side mounting portions 48 are located on the right side of the upper part of the first back panel 36, and the two left-side mounting portions 50 are located on the left side of the upper part of the first back panel 36.

[0049] As shown in Fig. 4, the harness 34 is detachably attached to the back panel 32. The harness 34 is worn by a user when in use. The harness 34 includes at least one (two in this embodiment) shoulder belt 54, at least one (two in this embodiment) back pad 56, and a waist belt 58.

[0050] The shoulder belts 54 are made of a breathable fabric material that allows moisture to pass through. The two shoulder belts 54 include a right shoulder belt 60 and a left shoulder belt 62. When the harness 34 is worn on a user, the right shoulder belt 60 is worn on the user's right shoulder, and the left shoulder belt 62 is worn on the user's left shoulder. At this time, the contact surface 60a of the right shoulder belt 60 comes into contact with the user's right shoulder, and the contact surface 62a of the left shoulder belt 62 comes into contact with the user's left shoulder.

[0051] The back pad 56 is made of a breathable fabric material that allows moisture to pass through. The two back pads 56 include a right back pad 64 and a left back pad 66. When the harness 34 is worn by a user, the contact surface 64a of the right back pad 64 comes into contact with the upper right side of the user's back, and the contact surface 66a of the left back pad 66 comes into contact with the upper left side of the user's back. The right back pad 64 is formed integrally with the right shoulder belt 60. The left back pad 66 is formed integrally with the left shoulder belt 62.

[0052] As shown in FIG. 3 , the right back pad 64 is detachably attached to the second back panel 38 via the two right attachment portions 48 of the second back panel 38. The tip of the right shoulder belt 60 is detachably attached to the first back panel 36 via the right attachment portion 44 of the first back panel 36. The left back pad 66 is detachably attached to the second back panel 38 via the two left attachment portions 50 of the second back panel 38. The tip of the left shoulder belt 62 is detachably attached to the first back panel 36 via the left attachment portion 46 of the first back panel 36.

[0053] The waist belt 58 shown in FIG. 4 is made of a moisture-permeable fabric material that allows moisture to pass through. The waist belt 58 is detachably attached to the lower part of the first back panel 36. When the harness 34 is worn by a user, the waist belt 58 is worn around the user's waist. At this time, a contact surface 58a of the waist belt 58 comes into contact with the user's waist. In addition, the operating unit 16 is detachably attached to the waist belt 58 via a buckle 68.

[0054] When a user works while wearing the backpack-type unit 2, for example, heat tends to build up at the contact points between the user's body and the harness 34. This can cause the user to feel hot while working. The backpack-type unit 2 of this embodiment is equipped with a cooling structure 72 for cooling the user's body.

[0055] As shown in FIG. 5 , the cooling structure 72 includes a cooling fan 14, a main body-side flow path 74, and main body-side communication ports 76, 78, and 80. The cooling fan 14, the main body-side flow path 74, and the main body-side communication ports 76, 78, and 80 are disposed in the main body 4. The main body-side flow path 74 is formed within the main body casing 8. The main body-side flow path 74 includes a lower flow path 74a extending from the cooling fan 14 to the right, a central flow path 74b extending upward from the right end of the lower flow path 74a, a right branch flow path 74c extending from the upper end of the central flow path 74b to the right, and a left branch flow path 74d extending from the upper end of the central flow path 74b to the left. The main body-side communication port 76 is disposed near the connection between the lower flow path 74a and the central flow path 74b. The main body-side communication port 78 is disposed in the right branch flow path 74c. The main body side communication port 80 is disposed in the left branch flow path 74d. The main body side communication ports 76, 78, 80 all pass through the front surface of the main body casing 8. The front surface of the main body casing 8 is the surface that faces the back plate 32 (see FIG. 3) when the main body 4 is attached to the base member 6 (see FIG. 3).

[0056] As shown in FIG. 3, the cooling structure 72 further includes back panel-side communication ports 82, 84, and 86. The back panel-side communication port 82 penetrates the first back panel 36 in the thickness direction (front-to-back direction). The back panel-side communication ports 84 and 86 each penetrate the second back panel 38 in the thickness direction (front-to-back direction). The back panel-side communication port 84 is disposed between the two right-side mounting portions 48. The back panel-side communication port 86 is disposed between the two left-side mounting portions 50. When the main body 4 (see FIG. 5) is attached to the base member 6, the back panel-side communication port 82 is connected to the main body-side communication port 76 (see FIG. 5), the back panel-side communication port 84 is connected to the main body-side communication port 78 (see FIG. 5), and the back panel-side communication port 86 is connected to the main body-side communication port 80 (see FIG. 5).

[0057] As shown in FIG. 6, the cooling structure 72 further includes harness-side communication ports 90, 92, and 94 and a plurality of cooling ports 96. In FIG. 6, the harness-side communication ports 90, 92, and 94 are hidden and not visible, but are illustrated by dashed lines. The harness-side communication port 90 is disposed on the non-contact surface 64b (see FIG. 7) of the right back pad 64. The non-contact surface 64b of the right back pad 64 is the surface that does not come into contact with the user's back when the right back pad 64 is in contact with the user's back, and is the surface opposite the contact surface 64a of the right back pad 64. The harness-side communication port 92 is disposed on the non-contact surface 66b of the left back pad 66. The non-contact surface 66b (see FIG. 7) of the left back pad 66 is a surface that does not come into contact with the user's back when the left back pad 66 is in contact with the user's back, and is the surface opposite the contact surface 66a of the left back pad 66. The harness-side communication port 94 is disposed on the non-contact surface 58b of the waist belt 58. The non-contact surface 58b of the waist belt 58 is a surface that does not come into contact with the user's waist when the waist belt 58 is worn around the user's waist, and is the surface opposite the contact surface 58a of the waist belt 58. When the main body 4 (see FIG. 5) is attached to the base member 6, the harness-side communication port 90 is connected to the back board-side communication port 84 (see FIG. 3), the harness-side communication port 92 is connected to the back board-side communication port 86 (see FIG. 3), and the harness-side communication port 94 is connected to the back board-side communication port 82 (see FIG. 3).

[0058] The plurality of cooling ports 96 includes one or more shoulder side cooling ports 98, one or more back side cooling ports 100, and one or more (ten in this embodiment) waist side cooling ports 102. The one or more shoulder side cooling ports 98 include one or more right shoulder side cooling ports 104 and one or more left shoulder side cooling ports 106.

[0059] The right shoulder-side cooling port 104 is arranged on the right shoulder belt 60. The one or more right shoulder-side cooling ports 104 include one or more (eight in this embodiment) first right shoulder-side cooling ports 108 and one or more (three in this embodiment) second right shoulder-side cooling ports 110 (see FIG. 7 ). The eight first right shoulder-side cooling ports 108 are arranged on the contact surface 60a of the right shoulder belt 60. The eight first right shoulder-side cooling ports 108 are aligned in a row along the longitudinal direction of the contact surface 60a of the right shoulder belt 60. When the right shoulder belt 60 is worn on the user's right shoulder, the eight first right shoulder-side cooling ports 108 are located near and face the user's right shoulder.

[0060] The three second right shoulder-side cooling ports 110 shown in FIG. 7 are arranged near the boundary between the contact surface 60a (see FIG. 6) and the non-contact surface 60b of the right shoulder belt 60. The non-contact surface 60b of the right shoulder belt 60 is the surface that does not come into contact with the user's right shoulder when the right shoulder belt 60 is fastened to the user's right shoulder, and is the surface opposite the contact surface 60a of the right shoulder belt 60. The three second right shoulder-side cooling ports 110 are aligned in a row along the longitudinal direction of the right shoulder belt 60. When the right shoulder belt 60 is fastened to the user's right shoulder, the three second right shoulder-side cooling ports 110 are near the user's right shoulder and face the user's face or neck.

[0061] As shown in FIG. 6, the left shoulder-side cooling port 106 is arranged on the left shoulder belt 62. The one or more left shoulder-side cooling ports 106 include one or more (eight in this embodiment) first left shoulder-side cooling ports 112 and one or more (three in this embodiment) second left shoulder-side cooling ports 114 (see FIG. 7). The eight first left shoulder-side cooling ports 112 are arranged on the contact surface 62a of the left shoulder belt 62. The eight first left shoulder-side cooling ports 112 are aligned in a row along the longitudinal direction of the contact surface 62a of the left shoulder belt 62. When the left shoulder belt 62 is worn on the user's left shoulder, the eight first left shoulder-side cooling ports 112 are located near and face the user's left shoulder.

[0062] The three second left shoulder-side cooling ports 114 shown in Fig. 7 are arranged near the boundary between the contact surface 62a (see Fig. 6) and the non-contact surface 62b of the left shoulder belt 62. The non-contact surface 62b of the left shoulder belt 62 is the surface that does not come into contact with the user's left shoulder when the left shoulder belt 62 is worn on the user's left shoulder, and is the surface opposite to the contact surface 62a of the left shoulder belt 62. The three second left shoulder-side cooling ports 114 are aligned in a row along the longitudinal direction of the left shoulder belt 62. When the left shoulder belt 62 is worn on the user's left shoulder, the three second left shoulder-side cooling ports 114 are near the user's left shoulder and face the user's face or neck.

[0063] 6, the one or more back-side cooling ports 100 include one or more (three in this embodiment) right-side cooling ports 116 and one or more (three in this embodiment) left-side cooling ports 118. The three right-side cooling ports 116 are arranged on the contact surface 64a of the right-side back pad 64. The three right-side cooling ports 116 are aligned in a row along the longitudinal direction of the contact surface 64a of the right-side back pad 64. When the right-side back pad 64 is in contact with the user's back, the three right-side cooling ports 116 are located near the user's back and face the user's back.

[0064] The three left back-side cooling ports 118 are arranged on the contact surface 66a of the left back pad 66. The three left back-side cooling ports 118 are aligned in a row along the longitudinal direction of the contact surface 66a of the left back pad 66. When the left back pad 66 is in contact with the user's back, the three left back-side cooling ports 118 are near the user's back and face the user's back.

[0065] The ten lumbar cooling ports 102 are arranged on the contact surface 58a of the waist belt 58. The ten lumbar cooling ports 102 are aligned in a row along the longitudinal direction of the contact surface 58a of the waist belt 58. When the waist belt 58 is worn around the waist of the user, the ten lumbar cooling ports 102 are located near and face the user's waist.

[0066] 7, the cooling structure 72 further includes an air flow path 122. Cooling air flows through the air flow path 122 by operation of the cooling fan 14. The air flow path 122 includes one or more shoulder-side air flow paths 124, one or more back-side air flow paths 126, and one or more (one in this embodiment) waist-side cooling flow paths 128.

[0067] The one or more shoulder-side air channels 124 include one or more (one in this embodiment) right shoulder-side air channels 130 and one or more (one in this embodiment) left shoulder-side air channels 132. The right shoulder-side air channel 130 is defined inside the right shoulder belt 60. The right shoulder-side air channel 130 is in communication with the outside of the right shoulder belt 60 via a plurality of right shoulder-side cooling ports 104. The left shoulder-side air channel 132 is defined inside the left shoulder belt 62. The left shoulder-side air channel 132 is in communication with the outside of the left shoulder belt 62 via a plurality of left shoulder-side cooling ports 106.

[0068] The one or more back-side air flow paths 126 include one or more (one in this embodiment) right-back-side air flow paths 134 and one or more (one in this embodiment) left-back-side air flow paths 136. The right-back-side air flow path 134 is defined inside the right-side back pad 64. The right-back-side air flow path 134 is connected to the outside of the right-side back pad 64 via three right-back-side cooling ports 116. The right-back-side air flow path 134 also communicates with the right-shoulder-side air flow path 130. The right-back-side air flow path 134 is also connected to the main body-side flow path 74 (see FIG. 5) via the harness-side communication port 90, the back panel-side communication port 84 (see FIG. 3), and the main body-side communication port 78 (see FIG. 5). The left-back-side air flow path 136 is defined inside the left-side back pad 66. The left back-side air flow path 136 communicates with the outside of the left back pad 66 via three left back-side cooling ports 118. The left back-side air flow path 136 also communicates with the left shoulder-side air flow path 132. The left back-side air flow path 136 also communicates with the main body-side flow path 74 (see FIG. 5) via the harness-side communication port 92, the back panel-side communication port 86 (see FIG. 3), and the main body-side communication port 80 (see FIG. 5).

[0069] The waist-side cooling flow path 128 is defined inside the waist belt 58. The waist-side cooling flow path 128 communicates with the outside of the waist belt 58 via ten waist-side cooling ports 102. The waist-side cooling flow path 128 also communicates with the main body-side flow path 74 (see FIG. 5) via the harness-side communication port 94, the back panel-side communication port 82 (see FIG. 3), and the main body-side communication port 76 (see FIG. 5).

[0070] Next, a method for cooling the user's body by operating the cooling fan 14 will be described. First, a case where cooling air flows out from multiple cooling ports 96 by operating the cooling fan 14 will be described. When the user is wearing the backpack-type unit 2 (see FIG. 1) on their back and operates the selector switch 26 (see FIG. 4) on the operation unit 16 to switch the cooling fan 14 shown in FIG. 5 to the on state, the cooling fan 14 operates. As shown in FIG. 5, when the cooling fan 14 operates, the cooling air sent out from the cooling fan 14 flows into the main body-side flow path 74 from outside the main body 4 via the cooling fan 14. The inflowing cooling air flows to the main body-side communication ports 76, 78, and 80.

[0071] The cooled air that has flowed to the main body-side communication port 76 flows from the main body-side flow path 74 through the main body-side communication port 76, the back panel-side communication port 82 (see FIG. 3), and the harness-side communication port 94 (see FIG. 7) and into the waist-side cooling flow path 128 (see FIG. 7) in the waist belt 58. As shown in FIG. 7, the inflowing cooled air flows through the waist-side cooling flow path 128 and exits the waist belt 58 through the ten waist-side cooling ports 102. The exiting air flows along the surface of the user's waist and cools the user's waist. Because the waist belt 58 is made of a breathable fabric material, moisture is absorbed near the waist belt 58 while the cooled air flows through the waist-side cooling flow path 128, reducing stuffiness around the user's waist. Furthermore, when the cooled air flows through the waist-side cooling flow path 128, the waist belt 58 is cooled, making the user less likely to feel hot.

[0072] As shown in FIG. 5, the cooled air that has flowed to the main body-side communication port 78 flows from the main body-side flow path 74 through the main body-side communication port 78, the back panel-side communication port 84 (see FIG. 3), and the harness-side communication port 90 (see FIG. 7) into the right back-side air flow path 134 (see FIG. 7) in the right back pad 64. As shown in FIG. 7, a portion of the cooled air that has flowed in flows through the right back-side air flow path 134 and then flows out of the right back pad 64 from the three right back-side cooling ports 116. The outflowing cooled air flows along the surface of the user's back and cools the user's back. The remainder of the cooled air flowing through the right back-side air flow path 134 flows from the right back-side air flow path 134 into the right shoulder-side air flow path 130. The cooled air flows out of the right shoulder belt 60 through the eight first right shoulder-side cooling ports 108 and also flows out of the right shoulder belt 60 through the three second right shoulder-side cooling ports 110. The cooled air flowing out of the eight first right shoulder-side cooling ports 108 flows along the surface of the user's right shoulder, cooling it. The cooled air flowing out of the second right shoulder-side cooling ports 110 flows along the surface of the user's face or neck, cooling it. Because the right back pad 64 and the right shoulder belt 60 are made of a breathable fabric material, moisture is absorbed near the right back pad 64 and the right shoulder belt 60 as the air flows through the right back-side air flow path 134 and the right shoulder-side air flow path 130, reducing stuffiness around the user's right shoulder and back. Furthermore, when the cooled air flows through the right back-side air flow path 134 and the right shoulder-side air flow path 130, the right back pad 64 and the right shoulder belt 60 are cooled, making the user less likely to feel hot.

[0073] As shown in FIG. 5, the cooled air that has flowed to the main body-side communication port 80 flows from the main body-side flow path 74 through the main body-side communication port 80, the back panel-side communication port 86 (see FIG. 3), and the harness-side communication port 92 (see FIG. 7) into the left back-side air flow path 136 (see FIG. 7) in the left back pad 66. As shown in FIG. 7, a portion of the cooled air that has flowed in flows through the left back-side air flow path 136 and then flows out of the left back pad 66 through the three left back-side cooling ports 118. The flowing-out cooled air flows along the surface of the user's back and cools the user's back. The remainder of the cooled air flowing through the left back-side air flow path 136 flows from the left back-side air flow path 136 into the left shoulder-side air flow path 132. The cooled air flows out of the left shoulder belt 62 through the eight first left shoulder-side cooling ports 112 and the three second left shoulder-side cooling ports 114. The cooled air flowing out of the eight first left shoulder-side cooling ports 112 flows along the surface of the user's left shoulder, cooling it. The cooled air flowing out of the second left shoulder-side cooling ports 114 flows along the surface of the user's face or neck, cooling it. Because the left back pad 66 and the left shoulder belt 62 are made of a breathable fabric material, moisture is absorbed near the left back pad 66 and the left shoulder belt 62 as the air flows through the left back-side air flow path 136 and the left shoulder-side air flow path 132, reducing stuffiness around the user's left shoulder and back. When the cooled air flows through the left back-side air flow path 136 and the left shoulder-side air flow path 132, the left back pad 66 and the left shoulder belt 62 are cooled, making the user less likely to feel hot.

[0074] Next, a case where cooling air flows in from multiple cooling ports 96 due to operation of cooling fan 14 will be described. As shown in FIG. 7, when cooling fan 14 (see FIG. 5) is operated, cooling air flows from the vicinity of the user's waist into waist-side cooling flow path 128 via ten waist-side cooling ports 102. At this time, the cooling air flows along the surface of the user's waist, cooling the user's waist. After flowing through waist-side cooling flow path 128, the cooling air flows from waist-side cooling flow path 128 into main body-side flow path 74 (see FIG. 5) of main body 4 via harness-side communication port 94, back panel-side communication port 82 (see FIG. 3), and main body-side communication port 76 (see FIG. 5).

[0075] Furthermore, when the cooling fan 14 (see FIG. 5 ) is operated, cooled air flows from near the user's right shoulder into the right shoulder-side air flow path 130 via the eight first right shoulder-side cooling ports 108 and flows to the right back-side air flow path 134. At this time, the cooled air flows along the surface of the user's right shoulder, cooling the user's right shoulder. Furthermore, cooled air flows from near the user's face or neck into the right shoulder-side air flow path 130 via the three second right shoulder-side cooling ports 110 and flows to the right back-side air flow path 134. At this time, the cooled air flows along the surface of the user's face or neck, cooling the user's face or neck. Furthermore, cooled air flows from near the user's back into the right back-side air flow path 134 via the three right back-side cooling ports 116. At this time, the cooled air flows along the surface of the user's back, cooling the user's back. The cooling air flows through the right rear air flow path 134, and then flows from the right rear air flow path 134 into the main body side flow path 74 (see Figure 5) of the main body 4 via the harness side communication port 90, the back panel side communication port 84 (see Figure 3), and the main body side communication port 78 (see Figure 5).

[0076] Furthermore, when the cooling fan 14 (see FIG. 5 ) is operated, cooled air flows from near the user's left shoulder into the left shoulder-side air flow path 132 via the eight first left shoulder-side cooling ports 112 and flows to the left back-side air flow path 136. At this time, the cooled air flows along the surface of the user's left shoulder, cooling the user's left shoulder. Furthermore, cooled air flows from near the user's face or neck into the left shoulder-side air flow path 132 via the three second left shoulder-side cooling ports 114 and flows to the left back-side air flow path 136. At this time, the cooled air flows along the surface of the user's face or neck, cooling the user's face or neck. Furthermore, cooled air flows from near the user's back into the left back-side air flow path 136 via the three left back-side cooling ports 118. At this time, the cooled air flows along the surface of the user's back, cooling the user's back. The cooling air flows through the left rear air flow path 136, and then flows from the left rear air flow path 136 into the main body side flow path 74 (see Figure 5) of the main body 4 via the harness side communication port 92, the back panel side communication port 86 (see Figure 3), and the main body side communication port 80 (see Figure 5).

[0077] As shown in FIG. 5, all the air that has flowed into the main body side flow path 74 flows through the main body side flow path 74, and is then sent out by the cooling fan 14 and flows out to the outside of the main body 4.

[0078] (effect) In this embodiment, the backpack unit 2 includes a main body 4 and a base member 6. The main body 4 includes a cooling fan 14. The base member 6 includes a back panel 32 attached to the main body 4 and a harness 34 attached to the back panel 32 and worn by a user. The harness 34 includes a cooling port 96 and at least one shoulder strap 54 worn on the user's shoulders. The cooling fan 14 causes cooling air to flow in or out through the cooling port 96 in the base member 6.

[0079] According to the above configuration, the user's body can be cooled by operating the cooling fan 14 while the user is wearing the backpack-type unit 2. This makes it possible to prevent the user from feeling too hot when wearing the backpack-type unit 2.

[0080] Furthermore, when the user wears the harness 34, the cooling port 96 is located near the user.

[0081] According to the above configuration, the cooling air flows near the user's body when it flows in or out through the cooling port 96. This makes it possible to further reduce the user's feeling of heat when carrying the backpack-type unit 2 on their back.

[0082] Additionally, when the user wears the harness 34, the cooling port 96 faces the user.

[0083] According to the above configuration, the cooling air flows along the surface of the user's body when it flows in or out through the cooling port 96. This makes it possible to further reduce the user's feeling of heat when carrying the backpack-type unit 2 on their back.

[0084] The harness 34 also includes a back pad 56 that contacts the user's back when the user wears the harness 34. When the user wears the harness 34, the cooling ports 96 face the portion of the user's back that is in contact with the back pad 56.

[0085] When the harness is equipped with the back pad 56, the back pad 56 comes into contact with the user's back, which tends to trap heat in the user's back. With the above configuration, when cooling air flows in or out through the cooling port 96, the cooling air flows along the surface of the portion of the user's back that comes into contact with the back pad. This further reduces the user's feeling of heat when wearing the backpack-type unit 2.

[0086] Additionally, cooling ports 96 are located in the shoulder belt 54 .

[0087] When the user carries the backpack unit 2 on their back, the shoulder straps 54 come into contact with the user's shoulders, which can easily trap heat in the user's shoulders. With the above configuration, when cooling air flows in or out through the cooling ports 96, the cooling air flows along the surface of the user's shoulders. This can further reduce the user's feeling of heat when carrying the backpack unit 2 on their back.

[0088] The harness 34 further includes a waist belt 58 that is attached to the waist of the user. The cooling port 96 is disposed in the waist belt 58.

[0089] When the harness 34 includes the waist belt 58, the waist belt 58 comes into contact with the user's waist, which tends to trap heat in the user's waist. With the above configuration, when cooling air flows in or out through the cooling port 96, the cooling air flows along the surface of the user's waist. This further reduces the user's feeling of heat when carrying the backpack unit 2 on their back.

[0090] The harness 34 may further include a waist belt 58 that is worn around the waist of the user and a cooling port 96 that is arranged in the waist belt 58. The cooling fan 14 allows cooling air to flow in and out through the cooling port 96 that is arranged in the shoulder belt 54 and the cooling port 96 that is arranged in the waist belt 58.

[0091] When the harness 34 includes the waist belt 58, the waist belt 58 comes into contact with the user's waist, which tends to trap heat in the user's waist. With the above configuration, when cooling air flows in or out through the cooling ports 96 arranged in the waist belt 58, the cooling air flows along the surface of the user's waist. This makes it possible to further prevent the user from feeling overheated when carrying the backpack-type unit 2 on their back.

[0092] The main body 4 also includes a battery 12 that supplies power to the cooling fan 14 .

[0093] According to the above configuration, even if the backpack-type unit 2 does not have an external power source that supplies power to the cooling fan 14, the cooling fan 14 can be operated.

[0094] The main body 4 can be connected to an electric work machine having a motor. The battery 12 supplies power to the motor of the electric work machine.

[0095] According to the above configuration, when a user carries the backpack unit 2 that supplies power to an electric operating machine on his / her back, the user can be prevented from feeling hot.

[0096] The cooling fan 14 is configured so that the air volume can be adjusted.

[0097] According to the above configuration, the air volume of the cooling fan 14 can be adjusted according to the degree of heat felt by the user.

[0098] The main body 4 also includes an operating unit 16 for operating the cooling fan 14 .

[0099] According to the above configuration, the user can control the operation of the cooling fan 14 via the operation unit 16.

[0100] The operation unit 16 also includes a changeover switch 26 for switching the cooling fan 14 between an on state and an off state.

[0101] According to the above configuration, the user can operate the changeover switch 26 to operate the cooling fan 14 when desired.

[0102] The cooling fan 14 is configured so that the air volume can be adjusted. The operation unit 16 is provided with an air volume adjustment switch 28 for adjusting the air volume of the cooling fan 14.

[0103] According to the above configuration, the user can adjust the air volume of the cooling fan 14 to a desired air volume by operating the air volume adjustment switch 28.

[0104] The harness 34 also has an air flow path 122 that communicates with the cooling port 96. When the cooling fan 14 operates, cooling air flows through the air flow path 122.

[0105] According to the above configuration, the cooling air flows through the air flow path 122, thereby cooling the harness 34. This makes it possible to further reduce the user's feeling of heat when carrying the backpack-type unit 2 on their back.

[0106] (Second Example) A second embodiment will be described with reference to Figures 8 and 9. In the second embodiment, only the differences from the first embodiment will be described, and the same parts as in the first embodiment will be denoted by the same reference numerals and will not be described again. In the second embodiment, the arrangement of the three right back-side cooling ports 116, the arrangement of the three left back-side cooling ports 118, and the arrangement of four of the multiple lumbar cooling ports 102 are different from those in the first embodiment. Hereinafter, the four of the multiple lumbar cooling ports 102 will be referred to as central lumbar cooling ports 202.

[0107] 8 are arranged near the boundary between the contact surface 64a and the non-contact surface 64b (see FIG. 9) of the right back pad 64. The three right back cooling ports 116 are arranged at the left end of the right back pad 64.

[0108] The three left back-side cooling ports 118 are arranged near the boundary between the contact surface 66a and the non-contact surface 66b (see FIG. 9) of the left back pad 66. The three left back-side cooling ports 118 are arranged at the right end of the left back pad 66. Each of the three left back-side cooling ports 118 faces each of the three right back-side cooling ports 116.

[0109] 9 are arranged near the boundary between the contact surface 58a (see FIG. 8) and the non-contact surface 58b of the waist belt 58. The four central waist-side cooling ports 202 are arranged at the upper end of the waist belt 58.

[0110] 8, a non-contact space 290 is formed between the right back pad 64 and the left back pad 66 (gap in the left-right direction) and between the back pad 56 and the waist belt 58 (gap in the up-down direction). When the harness 34 is worn by a user, the non-contact space 290 is located between the user's back and the backboard 32. Furthermore, when the harness 34 is worn by a user, the back pad 56 and the waist belt 58 are not located in the non-contact space 290. When the harness 34 is worn by a user, the three right back-side cooling ports 116, the three left back-side cooling ports 118, and the four central waist-side cooling ports 202 all face the non-contact space 290.

[0111] Next, a method for cooling the user's body by operation of the cooling fan 14 (see FIG. 5) will be described. Below, only the flow of cooling air through the three right back-side cooling ports 116, the three left back-side cooling ports 118, and the four central waist-side cooling ports 202 will be described. First, a case where cooling air flows out of multiple cooling ports 96 due to operation of the cooling fan 14 will be described. In FIG. 8, the direction of some of the cooling air flow is indicated by arrows. After operation of the cooling fan 14 causes cooling air to flow through the right back-side air flow path 134 (see FIG. 9) in the right back pad 64, the cooling air flows out from the three right back-side cooling ports 116 into the non-contact space 290. Furthermore, after flowing through the left back-side air flow path 136 (see FIG. 9) in the left back pad 66, the cooling air flows out from the three left back-side cooling ports 118 into the non-contact space 290. Furthermore, after the cooling air flows through the lumbar cooling flow passages 128 (see FIG. 9) in the waist belt 58, the cooling air flows out from the four central lumbar cooling ports 202 into the non-contact space 290. While flowing through the non-contact space 290, the flowing out cooling air flows along the surface of the user's back and cools the user's back. Thereafter, the cooling air flows in the direction of the arrow in FIG. 8 and flows out into the space outside the non-contact space 290.

[0112] Next, a case where cooling air flows in from multiple cooling ports 96 due to operation of cooling fan 14 will be described. When cooling fan 14 operates, cooling air flows in the opposite direction of the arrow in FIG. 8 from a space outside non-contact space 290 into non-contact space 290. While flowing through non-contact space 290, the inflowing cooling air flows along the surface of the user's back, cooling the user's back. Thereafter, the cooling air flows into right back-side air flow path 134 (see FIG. 9) via three right back-side cooling ports 116. The cooling air also flows into left back-side air flow path 136 (see FIG. 9) via three left back-side cooling ports 118. The cooling air also flows into waist-side cooling flow path 128 (see FIG. 9) via four central waist-side cooling ports 202.

[0113] (effect) In this embodiment, the harness 34 further includes a back pad 56 that comes into contact with the user's back when the user wears the harness 34. When the user wears the harness 34, a non-contact space 290 is formed between the user's back and the backboard 32, where the back pad 56 is not disposed. The cooling port 96 faces the non-contact space 290 when the user wears the harness 34.

[0114] When the harness 34 includes the back pad 56, the back pad 56 comes into contact with the user's back, which tends to trap heat in the user's back. With the above configuration, when cooling air flows in or out through the cooling port 96, the cooling air flows along the surface of the user's back in the non-contact space 290. This further reduces the user's feeling of heat when carrying the backpack-type unit 2.

[0115] (Third Example) A third embodiment will be described with reference to Figure 10. In the third embodiment, only the differences from the first embodiment will be described, and the same parts as in the first embodiment will be denoted by the same reference numerals and will not be described again. In the third embodiment, the position at which the operating unit 16 of the main body 4 is attached is different from that in the first embodiment.

[0116] The operation unit 16 is detachably attached to the right shoulder belt 60 via a buckle 68. In this case, the user operates the selector switch 26 and the air volume adjustment switch 28 with, for example, the left hand. In a modified example, the operation unit 16 may be detachably attached to the left shoulder belt 62 via the buckle 68.

[0117] (Variation) In one embodiment, the body 4 may be integrally formed with the back plate 32 .

[0118] In one embodiment, the main body 4 may be a working machine, such as a dust collector, a blower, or a mist blower.

[0119] In one embodiment, the right shoulder belt 60 and the right back pad 64 may be separate pieces, and the left shoulder belt 62 and the left back pad 66 may be separate pieces.

[0120] In one embodiment, the right shoulder belt 60 and the left shoulder belt 62 may be integrally formed, and the right back pad 64 and the left back pad 66 may be integrally formed.

[0121] In one embodiment, the air flow passage 122 may be provided with a cushioning material, such as sponge or cotton, that allows air to flow therethrough.

[0122] In one embodiment, the waist belt 58, right shoulder belt 60, left shoulder belt 62, right back pad 64, and left back pad 66 may be integrally formed.

[0123] In one embodiment, the cooling structure 72 may further include another cooling fan. The other cooling fan may be disposed in the shoulder belt 54 or the waist belt 58.

[0124] In one embodiment, the backpack unit 2 may include an attachment member that houses the operating unit 16. In this case, the attachment member may be detachably attached to the shoulder belt 54, or may be detachably attached to the waist belt 58 or the main body 4.

[0125] In one embodiment, the air volume adjustment switch 28 may be configured to have a rhythm operation mode that automatically switches between a strong wind mode and a weak wind mode.

[0126] In one embodiment, the plurality of cooling ports 96 may include only one or two of one or more shoulder cooling ports 98, one or more back cooling ports 100, and one or more lumbar cooling ports 102.

[0127] In one embodiment, the changeover switch 26 and the airflow adjustment switch 28 may be attached to the main body 4 (for example, the main body casing 8). [Explanation of symbols]

[0128] 2: Backpack unit 4: Main unit 6: Base material 12: Battery 14: Cooling fan 16:Operation section 26: Switch 28: Air volume adjustment switch 32: Back plate 34: Harness 36: 1st back plate 38:Second back plate 54: Shoulder belt 56: Back pad 58: Waist belt 60: Right shoulder belt 62: Left shoulder belt 64: Right back pad 66: Left back pad 72: Cooling structure 96: Cooling port 98: Shoulder cooling port 100: Back cooling port 102: Waist cooling port 104: Right shoulder cooling port 106: Left shoulder cooling port 116: Right rear cooling port 118: Left rear cooling port 122: Air flow path 124: Shoulder air flow path 126: Back air flow path 128: Cooling channel on the lower back 130: Right shoulder air flow path 132: Left shoulder air flow path 134: Right rear air flow path 136: Left rear air flow path 202: Central waist cooling port 290: Non-contact space

Claims

1. The main body and A base member is provided, The main body is provided with a cooling fan, The base member is a back plate attached to the main body; a harness attached to the backboard and worn by a user; The harness is A cooling port; and at least one shoulder belt attached to the shoulder of the user, The cooling fan causes cooling air to flow in or out through the cooling port of the harness, The harness further includes a back pad that contacts the user's back when the user wears the harness; When the user wears the harness, a non-contact space is formed between the back of the user and the backboard, in which the back pad is not disposed; A backpack-type unit, wherein the cooling port faces the non-contact space when the user wears the harness.

2. The backpack unit of claim 1 , wherein the cooling port is positioned adjacent to the user when the user is wearing the harness.

3. 3. The backpack unit of claim 1 or 2, wherein the cooling port faces the user when the user is wearing the harness.

4. A backpack unit as described in any one of claims 1 to 3, wherein when the user wears the harness, the cooling port faces the part of the user's back that is in contact with the back pad.

5. 5. The backpack unit of claim 1, wherein the cooling port is located in the shoulder strap.

6. The harness further includes a waist belt attached to the waist of the user, 5. The backpack unit of claim 1, wherein the cooling port is located in the waist belt.

7. The harness is a waist belt worn around the waist of the user; a cooling port disposed in the waist belt, 6. The backpack unit of claim 5, wherein the cooling fan directs cooling air in and out through the cooling ports located in the shoulder belt and the cooling ports located in the waist belt.

8. 8. The backpack unit of claim 1, wherein the main body includes a battery that supplies power to the cooling fan.

9. The main body is connectable to an electric working machine having a motor, 9. The backpack unit of claim 8, wherein the battery powers the motor of the electric work machine.

10. 10. The backpack unit according to claim 1, wherein the cooling fan is configured so that the airflow rate is adjustable.

11. The backpack-type unit according to claim 1 , wherein the main body includes an operating unit for operating the cooling fan.

12. The backpack-type unit according to claim 11, wherein the operation unit includes a changeover switch for switching the cooling fan between an on state and an off state.

13. The cooling fan is configured so that the air volume can be adjusted, 13. The backpack-type unit according to claim 11, wherein the operation unit includes an air volume adjustment switch for adjusting the air volume of the cooling fan.

14. the harness includes an air flow path communicating with the cooling port; 14. The backpack unit of claim 1, wherein when the cooling fan is operated, air flows through the air flow path.

Images