JP6469488B2 - Flight equipment - Google Patents

Description

  The present invention relates to an unmanned flying device used for various purposes, and in particular, a flight that can dissipate and cool the heat generated by a built-in electronic device or the like without providing a special cooling device. It relates to the device.

  Conventionally, unmanned flying devices have been used for various purposes. In such a flying device, since the capacity of the power supply that can be mounted is limited, it is necessary to reduce the size and weight of the device in order to increase the flight duration. However, such a flying device needs to perform not only the flight but also other predetermined operations depending on the application, so that the operation necessary for the application can be performed and the flight duration can be increased. It is necessary to achieve both.

  For example, as a flying device used for security purposes, an invention relating to a flying device having a photographing function as described in Patent Document 1 below is disclosed. The flying device of the present invention can fly to a position where the suspicious person detected by the sensor can be photographed from above, photograph the suspicious person while tracking the suspicious person, and transmit the photographed image to an external security device.

JP 2014-146141 A

  In the invention of the conventional flying device as described in Patent Document 1, when a necessary operation is performed, a built-in electronic device that performs the operation generates heat. If this heat is excessively generated, the electronic device is damaged or the operation accuracy of the electronic device is lowered. Therefore, the function of dissipating heat from the electronic device and cooling the electronic device is essential. As a means for realizing such a function, it is conceivable to provide a cooling device such as a conventionally known cooling fan in the flying device. However, if a cooling device is separately provided, the flying device becomes larger and heavier, so that the power consumption for flying increases and the duration of the flight becomes shorter.

  The present invention has been made to solve the problems in the conventional flying device described above, and reliably dissipates the heat generated by the components incorporated in the flying device without providing a special cooling device. The purpose is to be able to.

The flying device according to claim 1 is:
A body with built-in parts,
A plurality of rotor blades disposed around the body;
A first ventilation portion formed in the main body so as to communicate with the inside and the outside of the main body and disposed on the windward side of the air flow generated by the rotation of the rotary blade or in the vicinity of the rotation surface of the rotary blade;
A second ventilation part disposed in the main body so as to communicate with the inside and the outside of the main body and disposed on the leeward side of the airflow generated by the rotation of the rotary blade;
It is characterized by having.

The flying device according to claim 2 is the flying device according to claim 1,
The outer shape of the main body on the rotating surface of the rotating blade is a curved surface along the rotation trajectory of the rotating blade, and the first ventilation portion is formed on the curved surface.

The flying device according to claim 3 is the flying device according to claim 2,
The first ventilation portion is formed along the rotation direction of the rotor blade.

The flying device according to claim 4 is the flying device according to any one of claims 1 to 3,
A holding part that holds the rotary blade on the windward side and that has a built-in component that communicates with the inside of the main body,
The holding portion includes a third ventilation portion that communicates the inside and the outside of the holding portion at a position facing the rotating surface.

The flying device according to claim 5 is the flying device according to any one of claims 1 to 4,
The component is arranged in an air circulation path from the second ventilation portion to the first ventilation portion inside the main body.

  According to the first aspect of the present invention, when the rotor blade is rotated for flight, the air pressure on the windward side of the airflow is lower than the air pressure on the leeward side of the airflow with the rotating surface of the rotor blade as the boundary surface. As a result, lift is generated, and the main body rises and can fly. At this time, as the air pressure generated by the airflow generated by the rotor blades decreases, the air inside the main body is sucked out from the first ventilation section and the outside air passes through the second ventilation section. As a result, a flow sucked into the inside of the main body is formed. This makes it possible to efficiently cool components such as electronic components inside the main body without using a separate cooling device by using the rotating operation of the rotor blades rotated for flight.

  According to the flight device of the second aspect, the gap between the rotor blade and the main body can be made minute. Therefore, when the rotor blade is rotated for flight, the first ventilation portion is moved from the inside of the main body. After that, the air flow toward the outside is more likely to occur. That is, air is easily sucked out of the main body from the first ventilation portion. For this reason, the flow of air can be reliably generated inside the main body, and the cooling effect of the components inside the main body can be further enhanced.

  According to the flight device of the third aspect, the first airflow is more easily generated more efficiently when the rotor blades are rotated from the inside of the main body to the outside through the first ventilation portion. A ventilation part can be arranged.

  According to the flying device described in claim 4, when the rotor blade is rotated for flight, the air pressure on the windward side of the air current is lower than the air pressure on the leeward side of the air current with the rotating surface of the rotor blade as a boundary surface. Thus, lift is generated, and the main body can fly. At this time, as the air pressure generated by the airflow generated by the rotor blades decreases, the air inside the holding portion communicating with the main body is sucked out from the third ventilation portion and the outside air is secondly discharged. A flow is formed which is sucked into the main body through the ventilation portion. This makes it possible to efficiently cool not only the inside of the main body but also the electronic parts and the like inside the holding part by using the rotating operation of the rotor blades rotated for flight. can do.

  According to the flying device of the fifth aspect, when the rotor blades are rotated for flight, the air that has flowed into the main body from the outside through the second ventilation portion follows the flow path inside the main body. And flows out of the main body from the first ventilation section. Here, parts to be cooled are arranged in the flow path in the main body, and the flowing air hits these parts to perform efficient cooling.

It is a top view of the flying device of an embodiment. It is the perspective view which looked at the flight apparatus of embodiment from diagonally upward. It is a front view of the flying device of an embodiment. It is a right side of the flying device of an embodiment. It is a rear view of the flying device of an embodiment. It is a bottom view of the flying device of an embodiment. It is the perspective view which looked at the flight apparatus of embodiment from diagonally downward. It is a typical fragmentary sectional view of the main part and holding part of the flying device of an embodiment.

The configuration of the flying device of the embodiment will be described with reference to FIGS.
As shown in FIGS. 1 to 7, the flying device 1 includes a top portion 2 that protrudes in a substantially spherical shape, a flat substantially star-shaped bottom portion 3, and four concave side portions 4 that connect the top portion 2 and the bottom portion 3. And a main body 5 generally constituted by As shown in FIG. 8, the inside of the main body 5 is a cavity, and inside this part, components 6 such as a control unit necessary for flying the flying device 1 and performing a specific mission are stored. ing. The components 6 include electronic components that generate heat during operation, electronic components such as batteries, and mechanical components such as various mechanisms. Four legs 7 are attached to the bottom 3 of the main body 5 at intervals of 45 degrees in the circumferential direction so that the main body 5 can be supported horizontally on a flat landing surface.

  As shown in FIGS. 1 to 7, four holding portions 8 are connected to the spherical top portion 2 of the main body 5. As shown in FIGS. 2 to 5, each holding portion 8 is a curved arm body that matches the spherical shape of the top portion 2 of the main body 5, and extends downward from the top portion 2 of the main body 5. Moreover, as shown in FIG.1 and FIG.6, each holding | maintenance part 8 is arrange | positioned at a 45 degree space | interval in the horizontal surface. Further, as shown in FIG. 8, the inside of each holding portion 8 is hollow and communicates with the inside of the main body 5.

  As shown in FIGS. 1 to 7, a rotary blade 9 that generates lift is attached to the tip of each holding portion 8. Each rotor blade 9 is composed of two blades and is connected to a motor (not shown) built in the tip of the holding portion 8. As shown in FIGS. 1 and 3 to 6, the four rotating blades 9 have the respective rotation axes parallel to each other, and the rotating surfaces PR of the respective rotating blades 9 coincide with each other. Therefore, in a state where the flying device 1 has landed on a horizontal plane, the rotary surfaces PR of the rotary blades 9 are in a common horizontal plane, and the horizontal plane is at a position approximately half the height of the main body 5. As shown in FIGS. 1, 2, and 6, a protection unit 10 surrounding the four rotary blades 9 is connected to the tip of each holding unit 8, and covers the rotary blades 9. Reduces the risk of contact with surrounding objects.

  In this embodiment, as described above, the four rotor blades 9 are arranged such that the respective rotation axes are parallel to each other and the respective rotation surfaces PR are in the same plane. The arrangement is not limited to this. For example, each rotation axis is inclined in the central direction so that the extension line intersects at one point above the top portion 2 of the main body 5, and the lower side of each rotation surface PR is inclined outward from the main body 5 side. The rotation axis may be inclined in the central direction so that the extension line intersects at one point below the bottom 3 of the main body 5, and the lower side of each rotation surface PR faces the main body 5 side. Alternatively, the arrangement may be inclined so as to face inward.

  As shown in FIG. 8, the inside of the holding portion 8 is a cavity, and necessary parts 6 and the like are housed in the inside as well as the main body 5. Examples of the component 6 housed in the holding unit 8 include an electronic device such as an ESC (electric speed controller) that generates heat during operation. This ESC is provided in the middle of the circuit connecting the battery housed in the main body 5 and the motor housed in the tip of the holding unit 8, and the current supplied from the battery to the motor based on an instruction from the control unit In the embodiment, the device is arranged at the central portion of the holding portion 8 or closer to the main body 5 than this. .

  As shown in FIG. 6, the outer shape of the side portion 4 of the main body 5 on the rotation surface PR of each rotor blade 9 is a concave and arcuate curved surface along the rotation locus L of each rotor blade 9. Then, as shown in FIGS. 2 to 5, 7, and 8, the side portion 4 of the curved main body 5 has a slit-like shape parallel to the rotation surface PR at a position above the rotation surface PR. A first ventilation portion 11 is formed. The 1st ventilation part 11 is a through-hole, and connects the inside and the exterior of the main body 5. Here, the position above the rotating surface PR is the windward side of the airflow generated by the rotation of the rotating blade 9, and the position of the rotating blade 9 is lower than the leeward side of the airflow that is a position below the rotating surface PR. At the time of rotation, the atmospheric pressure becomes low.

  As shown in FIGS. 6 and 7, a slit-like second ventilation portion 12 is formed on the bottom portion 3 of the main body 5. The 2nd ventilation part 12 is also a through-hole, and connects the inside and the outside of the main body 5. The second ventilation portion 12 is at a position below the rotation surface PR, but the position below the rotation surface PR is the leeward side of the airflow generated by the rotation of the rotary blade 9, and the rotation surface PR. The air pressure is higher when the rotor blades 9 are rotated than the upwind side of the airflow, which is an upper position.

  As shown in FIGS. 6 to 8, the holding portion 8 has a third ventilation for passing the inside and the outside of the holding portion 8 on the side of the holding portion 8 that faces the rotation surface PR of the rotary blade 9. A portion 13 is formed. The 3rd ventilation part 13 is a through-hole, and connects the inside of the holding | maintenance part 8 and the main body 5, and the exterior. Since the third ventilation portion 13 is provided on the lower surface of the holding portion 8 with the rotary blade 9 attached to the lower side of the tip, the third ventilation portion 13 is located above the rotational surface PR of the rotary blade 9. The position of the third ventilation portion 13 is the windward side of the airflow generated by the rotation of the rotary blade 9 and the position below the rotation surface PR, similarly to the position where the first ventilation portion 11 is provided. Compared to the leeward side of the airflow, the atmospheric pressure becomes lower when the rotary blade 9 rotates.

  As shown in FIGS. 3 and 7, a camera 14 and two illumination devices 15 are attached to the front side of the main body 5. As shown in FIGS. 6 and 7, the bottom 3 of the main body 5 is provided with an external connection terminal 16 for charging, and when landing, it is connected to the charging electrode provided on the ground facility. It can be done.

The operation of the flying device 1 according to the embodiment will be described with reference to FIGS.
In the flying device 1, when the rotor blade 9 is rotated, the air pressure on the windward side of the air current is lower than the air pressure on the leeward side of the air current with the rotation surface PR of the rotor blade 9 as a boundary surface, thereby generating lift. Therefore, the main body 5 can be raised, stopped in the air, or allowed to fly.

  At this time, the air inside the main body 5 is sucked out from the first ventilation portion 11 and the outside air is secondly ventilated as the air pressure generated by the airflow generated by the rotor blades 9 decreases. A flow that is sucked into the main body 5 through the portion 12 is formed. Therefore, inside the main body 5, an air circulation path from the second ventilation section 12 to the first ventilation section 11 is formed, and the air flow hits the components 6 arranged along the circulation path. Cool this. That is, even if a cooling device for cooling the component 6 is not provided, a flow of cooling air is created inside the main body 5 by using the rotating operation of the rotor 9 that is rotated for flight, The components 6 such as electronic components in the vicinity of the path can be efficiently cooled.

  Further, according to the flying device 1, as described above, the outer shape of the main body 5 is a curved surface along the rotation locus L of the rotary wing 9. That is, when the rotation surface PR of the rotor blade 9 is a virtual cut surface, the outer shape of the main body 5 is a shape along the rotation locus L of the rotor blade 9, that is, an arc shape that is concave inward of the main body 5. It has become. For this reason, the gap between the rotation locus L of the rotor blade 9 and the main body 5 is very small compared to the case where the outer shape of the main body 5 is flat or the like. From this gap, the gap is temporarily lower than the rotation plane PR (leeward side). Since the pushed-out air is difficult to return, the negative pressure generated in the vicinity of the main body 5 on the upper side (windward side) of the rotation surface PR is the first ventilation portion 11 and the holding portion 8 arranged on the curved surface of the main body 5. It acts effectively so as to suck out more air from the third ventilation portion 13 arranged in the.

  Furthermore, the shape of the 1st ventilation part 11 formed in the said curved surface is a horizontally long slit shape along the rotation direction of the rotary blade 9. FIG. In other words, the first ventilation portion 11 is rotated when the rotary blade 9 is rotated, for example, in the same slit shape that is arranged vertically so as not to follow the rotation direction of the rotary blade 9. The 1st ventilation part 11 can be arrange | positioned in the position which makes it easy to produce the air flow which goes to the exterior from the inside of the main body 5 via this. Therefore, a stronger negative pressure acts on the first ventilation portion 11 that is formed horizontally on the curved surface, and air is sucked out of the main body 5 from the first ventilation portion 11 with a strong force. In other words, airflow from the inside of the main body 5 toward the outside is likely to occur. For this reason, an air flow can be reliably generated inside the main body 5, and the cooling effect of the components 6 inside the main body 5 can be further enhanced.

  In addition, an air flow path from the second ventilation portion 12 to the first ventilation portion 11 is formed inside the main body 5 by the air flow generated by the rotor blades 9, and the second ventilation portion 12 of the main body 5. The air flow path from the first to the third ventilation part 13 formed in the holding part 8 communicating with the main body 5 is also formed. For this reason, not only the component 6 inside the main body 5 but also the component 6 such as the electronic component 6 inside the holding portion 8 can be efficiently cooled.

  In addition, the components 6 arranged inside the main body 5 and the holding portion 8 are not closely packed with each other and have an appropriate interval, and the gap is changed from the second ventilation portion 12 to the first ventilation portion 11 and the third ventilation portion. It is good also as what arrange | positions so that the path | route leading to the ventilation part 13 may be comprised. If it does in this way, the air which flowed in the inside of the main body 5 from the 2nd ventilation part 12 will flow through the various distribution channels comprised between these components 6 and the components 6, and as a result, more The component 6 can be effectively cooled.

As mentioned above, although embodiment which concerns on this invention was described, this invention is realizable as various embodiment other than said embodiment.
For example, in the above-described embodiment, a flying device having four rotor blades 9, that is, a so-called quadcopter has been described as an example. ), Etc., and can be applied to a so-called multicopter having a plurality of rotor blades 9 around the main body 5.

  In the above-described embodiment, the first ventilation portions 11 are provided for all of the side portions 4 corresponding to the four rotor blades 9, but may not be provided for all the side portions 4. The cooling efficiency required for the flying device 1 is experimentally examined, and the first ventilation portion 11 is appropriately provided for any one of the side portions 4 among the plurality of side portions 4 according to the required efficiency. It is good as well. Further, the third ventilation portion 13 is similar to this and may not be provided in all the holding portions 8.

  Furthermore, the 1st ventilation part 11 should just be provided in the main body 5 above the rotation surface PR of the rotary blade 9, and is restricted to the position shown in FIGS. 3-5 of the above-mentioned embodiment. It is not a thing. The position of the 1st ventilation part 11 may be provided in the side part 4 above the position shown in FIGS. The second ventilation portion 12 may also be provided on the main body on the lower side (leeward side) than the rotation surface PR of the rotor blade 9, and the position shown in FIGS. 6 and 7 of the above-described embodiment. It is not limited to. For example, you may provide in the side part 4 of the main body 5 below the rotation surface PR in FIGS. Moreover, although the 1st ventilation part 11 is provided above the rotation surface PR of the rotary blade 9 (windward side), the effect which sucks out air from the inside can be acquired efficiently, but it is not restricted to this, A rotation surface Even if it is on the lower side (leeward side) of PR, if the first ventilation portion 11 is provided on the side portion 4 corresponding to the vicinity of the rotation surface PR of the rotary blade 9 shown in FIG. An effect can be obtained. In this case, the position of the first ventilation portion 11 in the vicinity of the rotation surface PR is determined by the air flow flowing from the upper side (windward side) to the lower side (leeward side) of the rotation surface PR of the rotor blade 9. As long as the position at which the effect of sucking out air from the inside of the main body 5 to the outside can be obtained by the above, the first ventilation portion 11 is arranged at various positions in the vicinity of the rotation surface PR of the rotary blade 9 to suck out the air. May be provided at a position where it can be confirmed experimentally.

  Further, in the above-described embodiment, the first ventilation portion 11 and the second ventilation portion 12 have a shape of a long round slit, and the third ventilation portion 13 has a plurality of round holes arranged in a substantially circular shape. Although the size is as shown in the figure, the shape and size of these ventilation portions are sucked by the airflow flowing from the upper side (windward side) to the lower side (leeward side) of the rotating surface PR of the rotor blade 9. Alternatively, the shape and size may be confirmed experimentally to obtain the suction effect. For example, as for the shape, the first ventilation part 11 is a plurality of round holes arranged in a substantially circular shape like the third ventilation part 13, or the first ventilation part along the rotation direction of the rotary blade 9. In the case of forming 11, a plurality of round holes may be arranged in series along the rotation direction of the rotary blade 9. The second ventilation portion 12 may also be a plurality of round holes arranged in a substantially circular shape like the third ventilation portion 13. Furthermore, the 3rd ventilation part 13 is good also as a slit shape like the 1st ventilation part 11 and the 2nd ventilation part 12. FIG.

DESCRIPTION OF SYMBOLS 1 ... Flight apparatus 4 ... The side part made into the curved surface along the rotation locus | trajectory of a rotary blade 5 ... Main body 6 ... Parts 8 ... Holding part 9 ... Rotary blade 11 ... 1st ventilation part 12 ... 2nd ventilation part 13 ... 3rd ventilation part PR ... Rotation surface of rotor blade

Claims (5)

A body containing the components,
A plurality of rotor blades disposed around the body;
A first ventilation portion formed in the main body so as to communicate with the inside and the outside of the main body and disposed on the windward side of the air flow generated by the rotation of the rotary blade or in the vicinity of the rotation surface of the rotary blade;
A second ventilation part disposed in the main body so as to communicate with the inside and the outside of the main body and disposed on the leeward side of the airflow generated by the rotation of the rotary blade;
A flying device characterized by comprising: 2. The flying device according to claim 1, wherein an outer shape of the main body on a rotating surface of the rotating blade is a curved surface along a rotation locus of the rotating blade, and the first ventilation portion is formed on the curved surface. The flying device according to claim 2, wherein the first ventilation portion is formed along a rotation direction of the rotary wing. A holding part that holds the rotary blade on the windward side and that has a built-in component that communicates with the inside of the main body,
The said holding | maintenance part was provided with the 3rd ventilation part which connects the inside and the exterior of the said holding | maintenance part in the position facing the said rotating surface. Flight equipment. 5. The component according to claim 1, wherein the component is disposed in an air flow path from the second ventilation portion to the first ventilation portion in the main body. Flight equipment.

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