JP6997930B2 - Aircraft and sign display method - Google Patents

Description

The present invention relates to an air vehicle and a sign display method.

Conventionally, a technique for displaying a sign using an air vehicle is known. For example, Patent Document 1 describes this kind of technology. Patent Document 1 describes an unmanned aerial vehicle that displays a warning message on a display and displays a pedestrian crossing, a stop sign, or the like on the road by a projector in order to control the traffic of pedestrians and vehicles.

Special Table 2018-89455 Gazette

By the way, in the event of a disaster such as a landslide or flooding, it is necessary to promptly implement traffic restrictions that prohibit traffic to sections where danger is expected in order to prevent the occurrence of secondary disasters. As in Patent Document 1, a warning message is displayed on the display, and a pedestrian crossing, a stop sign, etc. are displayed on the road by a projector, as in Patent Document 1, because it is possible to quickly reach a place with a poor foothold. It is conceivable to use the body for traffic regulation in the event of a disaster. However, the display functions of displays and projectors consume a large amount of power, and there is room for improvement in terms of securing the operating time of the flying object.

The present invention has been made in view of such a situation, and an object of the present invention is to provide an air vehicle capable of displaying a highly visible sign while suppressing power consumption.

The flying object of one aspect of the present invention includes an air flow generator for generating an air flow for flight and an expansion member having an injection port, and the air flow generator includes air in a direction different from that during flight. By generating a flow, air can be injected from the injection port to inflate the expansion member.

According to the present invention, it is possible to provide an air vehicle capable of displaying a highly visible sign while suppressing power consumption.

It is a front view which shows the state which the expansion member of the flying body which concerns on 1st Embodiment of this invention contracted. It is a front view which shows the expanded state of the expansion member of the flying body which concerns on 1st Embodiment of this invention. It is an enlarged perspective view which shows the periphery of the expansion member of the contracted state of the flying object which concerns on 1st Embodiment of this invention. It is an enlarged perspective view which shows the periphery of the expansion member in the expanded state of the flying object which concerns on 1st Embodiment of this invention. It is an enlarged plan view which shows the periphery of the expansion member of the contracted state of the flying object which concerns on 1st Embodiment of this invention. It is an enlarged plan view which shows the periphery of the expansion member in the expanded state of the flying object which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows the state which the injection port of the expansion member of the flying body which concerns on 1st Embodiment of this invention is closed. It is a schematic diagram which shows the state which the injection port of the expansion member of the flying body which concerns on 1st Embodiment of this invention is open. It is a block diagram which shows the electric structure about the control device of the flying object which concerns on 1st Embodiment of this invention. It is a flowchart which shows the sign display method of the traffic regulation by the flying object which concerns on 1st Embodiment of this invention. It is a front view which shows the expanded state of the expansion member of the flying body which concerns on 2nd Embodiment of this invention.

Hereinafter, non-limiting exemplary embodiments of the present invention will be described with reference to the drawings.

The flying object according to the present embodiment is a drone that can fly unmanned. In addition, "unmanned flight possible" means that a person can fly without boarding the flying object, and includes not only the case where autonomous flight is possible but also the case where the flying object is remotely controlled by a person.

The flying object 1 according to the first embodiment of the present invention will be described. FIG. 1 is a front view of the flying object 1 in a state where the expanding member 40 is contracted, and FIG. 2 is a front view of the flying object 1 in a state where the expanding member 40 is inflated.

As shown in FIGS. 1 and 2, the flying object 1 includes a main body portion 11, an arm portion 12 extending from the main body portion 11, and an air flow generator 19 for generating an air flow for flying the flying object 1. An expansion member 40 capable of displaying a sign, an expansion support member 50 supporting the expansion member 40, an open drive device 60 for opening the injection port 41, and an angle changing device 30 for changing the direction of the air flow generator 19. , Equipped with.

The main body 11 is located at the center of the flying object 1 in a plan view. A leg portion 13 that comes into contact with the landing plane is arranged on the lower side of the main body portion 11. Further, the main body 11 includes a control device 100, a camera 102, and the like that perform various controls of the flying object 1 described later.

The arm portion 12 is a support portion in which one end thereof is connected to the main body portion 11 and an air flow generator 19 is arranged at the other end portion (hereinafter referred to as the tip portion). In the present embodiment, each of the six (plural) arm portions 12 extends radially (diameterally) from the main body portion 11 in a plan view. Further, the arm portion 12 extends in a substantially horizontal direction. The distance between the six arm portions 12 is equal in the circumferential direction in a plan view.

The air flow generator 19 is a device that generates an air flow for the flying object 1 to fly. The air flow generator 19 includes a rotary blade 20 and a rotary blade drive unit 21. The rotary blade drive unit 21 is arranged on the tip end side of the arm unit 12, and rotates the rotary blade 20 by a built-in forward / reverse rotatable motor. The rotation of the rotary blade 20 generates an air flow flowing in a predetermined direction.

The expansion member 40 is for displaying a sign such as a message composed of warning characters and figures for traffic regulation in the event of a disaster. The expansion member 40 is arranged at a position further radially outside the tip portion of the arm portion 12 in a plan view and not in contact with the rotary blade 20 even if it rotates. The "diameter outside" here is the side away from the main body 11 when the center of gravity or the center of the main body 11 of the flying object 1 is the starting point in a plan view. In the flying object 1 of the present embodiment, a total of two expansion members 40 are arranged, and the two expansion members 40 are arranged so as to face each other with the main body portion 11 interposed therebetween. The expansion member 40 arranged on one side of the main body 11 is in a positional relationship facing the tip of one of the six arm portions 12. Similarly, the expansion member 40 arranged on the other side of the main body 11 is also the tip end portion of one arm portion 12 extending in a direction opposite to the above-mentioned arm portion 12 among the six arm portions 12. It becomes a positional relationship facing the.

Next, the configuration of the expansion member 40 will be described. FIG. 3 is an enlarged perspective view of the periphery of the air flow generator 19 of the flying object 1 and the inflated member 40 in the contracted state, and FIG. 4 is an enlarged perspective view of the periphery of the air flow generator 19 and the inflated member 40 in the expanded state. Is an enlarged plan view of the periphery of the air flow generator 19 and the inflated member 40 in the contracted state, and FIG. 6 is an enlarged plan view of the periphery of the air flow generator 19 and the expanded member 40 in the expanded state.

The expansion member 40 of the present embodiment has a contracted state folded in a bellows shape on the main body 11 side (state shown in FIG. 1) and an expanded state expanded vertically and radially outward (state shown in FIG. 2). It is composed of a cloth-like member that can be deformed into. During flight, the inflatable member 40 is held in a contracted state in order to suppress the generation of air resistance caused by the inflatable member 40. As will be described later, after the aircraft 1 lands in a dangerous area where traffic regulation is required, the expansion member 40 transitions from the contracted state to the expanded state in order to display the traffic regulation sign. The inflatable member 40 displays characters, figures, colors, or combinations thereof that convey a message in an inflated state. For example, characters such as "closed" are described.

The expansion member 40 has an injection port 41 into which air is injected at one end, and is configured in a bag shape in which the other end (hereinafter, the tip portion) is closed. In the expansion member 40, the injection port 41 is located on the main body 11 side, and the tip portion is located radially outside the injection port 41. As shown in FIG. 4, in the expanded state, the inflatable member 40 extends in the vertical direction and the radial direction outward, and is formed in a substantially cylindrical shape in which the tip portion is closed.

The inlet 41 has a substantially circular shape in the expanded state, and is formed at a position facing the tip of the arm portion 12 in a plan view. In the contracted state, the edge of the injection port 41 is linearly closed.

The configuration of the injection port 41 will be described with reference to FIGS. 7A and 7B. FIG. 7A is a view of the injection port 41 in the closed state as viewed from the main body 11 side, and FIG. 7B is a view of the injection port 41 in the open state as viewed from the main body 11 side.

A pair of hinge portions 42, 43 are attached to the edges of the injection port 41 at positions facing each other across the center of the injection port 41, and a pair of wires 44, 45 are hung between the pair of hinge portions 42, 43. Passed.

As shown in FIGS. 7A and 7B, the hinge portion 42 includes a pair of hinge pieces 42a and 42b, and a torsion coil spring 42c as a urging member arranged at the connecting portion thereof. The hinge portion 42 is arranged so that the axis of the torsion coil spring 42c is parallel to the longitudinal direction of the expansion member 40 in the expanded state. The torsion coil spring 42c urges a pair of hinge pieces 42a and 42b so that the injection port 41 is in an open state.

As shown in FIGS. 7A and 7B, the hinge portion 43 includes a pair of hinge pieces 43a and 43b, and a torsion coil spring 43c as a urging member arranged at the connecting portion thereof. The hinge portion 43 is arranged so that the axis of the torsion coil spring 43c is parallel to the longitudinal direction of the expanding member 40 in the expanded state. The torsion coil spring 43c urges a pair of hinge pieces 43a and 43b so that the injection port 41 is in an open state.

The pair of wires 44, 45 are attached along the edge of the inlet 41. Specifically, one end of the wire 44 is attached to the hinge piece 42a, and the other end is attached to the hinge piece 43a. One end of the wire 45 is attached to the hinge piece 42b, and the other end is attached to the hinge piece 43b. As shown in FIG. 7A, when the injection port 41 is closed, the hinge pieces 42a and 42b of the hinge portion 42 and the hinge pieces 43a and 43b of the hinge portion 43 are closed and the wires 44 and 45 are close to each other and extend in parallel. ing. As shown in FIG. 7B, when the injection port 41 is open, the hinge portions 42 and 43 are opened, the wire 44 is curved upward, the wire 45 is curved downward, and the distance between the hinge portions 42 and 43 is formed. Becomes shorter.

Next, the expansion support member 50 that supports the expansion member 40 will be described. The expansion support member 50 is a pair of rod-shaped members for supporting the expansion member 40 radially outside the arm portion 12 in a plan view. In the present embodiment, since the two expansion members 40 are arranged on the flying object 1, a total of four expansion support members 50 are arranged.

The expansion support member 50 extends radially from the main body 11 in a plan view. The expansion support member 50 is formed to have a length longer than that of the arm portion 12. One end (hereinafter, the base end portion) of the expansion support member 50 is connected to the open drive device 60 built in the main body portion 11, and the other end (hereinafter, the tip portion) is connected to the hinge portions 42, 43 of the expansion member 40. Will be done.

In the present embodiment, the expansion support member 50 is arranged on both sides in the circumferential direction of the arm portion 12 whose tip portions face the expansion member 40 in a plan view. That is, in a plan view, each expansion support member 50 is located between the arm portions 12 adjacent to each other in the circumferential direction.

Next, the open drive device 60 will be described. The open drive device 60 is a device that opens the injection port 41 of the inflated member 40 in the contracted state by moving the inflatable support member 50. The open drive device 60 includes a motor that changes the angle of the pair of expansion support members 50 with respect to the arm portion 12 whose tip portion faces the expansion member 40. In the present embodiment, the open drive devices 60 are arranged at two locations inside the main body portion 11 and are connected to the base end portions of the pair of expansion support members 50, respectively.

As shown in FIGS. 5 and 6, the open drive device 60 operates to bring the tips of the pair of expansion support members 50 close to each other. As a result, a force is applied so that the pair of hinge portions 42, 43 come close to each other. In other words, the open drive device 60 drives each of the pair of expansion support members 50 so that the angle formed by the pair of expansion support members 50 becomes smaller in a plan view. As a result, the wires 44 and 45 are curved upward and downward, respectively, and the injection port 41 is opened.

In the present embodiment, the hinge pieces 42a and 42b are urged in the direction away from each other by the urging force of the torsion coil spring 42c, and the hinge pieces 43a and 43b are urged in the direction away from each other by the torsion coil spring 43c. Therefore, it is possible to surely prevent the situation where the wires 44 and 45 are biased to one side.

Next, a configuration for contracting the expansion member 40 in the radial direction will be described. As shown in FIG. 3, a linear member 46 and an engaging member 47, which are members for maintaining a contracted state, are attached to the expanding member 40. One end of the linear member 46 is fixed to the inner radial outer end of the expansion member 40. Then, a disk-shaped engaging member 47 is fixed to the end of the linear member 46 on the side opposite to the side connected to the expansion member 40. The length of the linear member 46 is shorter than the length from the closed end of the expansion member 40 to the injection port 41.

As shown in FIG. 3, in the contracted state, by engaging the engaging member 47 with the gap between the wires 44 and 45 of the injection port 41 on the outside of the expansion member 40, the tip of the expansion member 40 is on the injection port 41 side. It is held in a state of being attracted to. That is, the length of the expansion member 40 on the outer side in the radial direction is substantially equal to the length of the linear member 46. As a result, it is possible to suppress the expansion of the inflatable member 40 to the outside in the radial direction in the contracted state, and it is possible to prevent an increase in air resistance during flight.

As shown in FIG. 4, when the injection port 41 is opened, the wires 44 and 45 are separated from each other in the vertical direction, so that the engaging member 47 is disengaged from the gap between the wires 44 and 45 and the expansion member 40 is radially separated from the injection port 41. The pulling force to the side is released. The disengaged engaging member 47 remains inside the expanding member 40 as it is.

Next, the angle changing device 30 will be described. The angle changing device 30 is a device that changes the direction of the air flow generated from the air flow generating device 19 by changing the angle of the rotating shaft A of the rotary blade 20. In the present embodiment, of the six air flow generators 19, they are connected to two air flow generators 19 arranged at positions facing the expansion member 40 in a plan view. That is, a total of two angle changing devices 30 are arranged on the flying object 1.

The angle changing device 30 of the present embodiment includes a joint mechanism 31 and an angle changing motor 32.

The joint mechanism 31 is arranged at the tip of the arm portion 12. The air flow generator 19 is supported by the joint mechanism 31 so as to be able to change the angle with respect to the arm portion 12. The joint mechanism 31 of the present embodiment holds the rotary wing 20 together with the rotary wing drive unit 21, and rotates the rotary wing drive unit 21 with the movable shaft B as the center of rotation so that the angle of the rotary wing 20 can be changed. Will be done. The movable axis B is an axis extending in a direction orthogonal to the extending direction of the arm portion 12 in a plan view.

The angle changing motor 32 is built in the tip of the arm portion 12. By driving the angle changing motor 32, the joint mechanism 31 rotates with the movable shaft B as a fulcrum, and the angle of the rotating shaft A of the rotary blade 20 is changed.

When flying the flying object 1 or when the flying object 1 is made to stand by without expanding the expansion member 40, the rotation axis A of the rotary blade 20 with respect to the arm portion 12 is orthogonal to the extension direction of the arm portion 12. It is held in a state of being along the vertical direction. On the other hand, when the expansion member 40 is expanded, the angle changing motor 32 is driven so that the rotation axis A is tilted outward in the radial direction so as to be substantially parallel to the extending direction of the arm portion 12. That is, when the expansion member 40 is expanded, the direction of the rotation axis A of the rotary blade 20 is changed from the vertical direction to the horizontal direction. When the rotary shaft A of the rotary blade 20 is along the horizontal direction, the rotary shaft A of the rotary blade 20 faces the injection port 41 of the expansion member 40.

Next, the direction of the air flow generated from the air flow generator 19 with respect to the rotation direction of the rotary blade 20 and the direction of the rotation axis A will be described. As shown in FIGS. 3 and 5, in a state where the rotary axis A of the rotary blade 20 is along the vertical direction, when the motor of the rotary blade drive unit 21 rotates in the forward direction, an air flow flowing downward from the rotary blade 20 is generated. do.

Here, as shown in FIGS. 4 and 6, the rotation direction of the motor of the rotor blade drive unit 21 and the generation direction of the air flow in a state where the rotation axis A of the rotor blade 20 is tilted in the horizontal direction by the angle changing device 30. The relationship with is explained. When the motor of the rotary blade drive unit 21 is rotated in the forward direction, an air flow flowing from the rotary blade 20 toward the main body portion 11 side is generated. On the other hand, when the motor of the rotary blade drive unit 21 rotates in the reverse direction, an air flow is generated from the rotary blade 20 toward the outside in the radial direction as shown by arrows F in FIGS. 4 and 6.

In the present embodiment, after the injection port 41 of the inflated member 40 in the contracted state is opened by the open drive device 60, the rotation axis A of the rotary blade 20 is tilted horizontally by the angle changing device 30, and the motor of the rotary blade drive unit 21 is used. Is rotated in the reverse direction to generate an air flow flowing outward from the rotary blade 20 in the radial direction. As a result, air flows into the inside of the expansion member 40, and the expansion member 40 expands toward the outside in the radial direction to enter an expansion state. As a result, the expansion member 40 on which the sign is drawn can be carried in a contracted state, and the expansion member 40 can be greatly expanded by utilizing the air flow of the air flow generator 19 used for flight. Therefore, it is possible to display a sign with high visibility while suppressing power consumption.

Next, the control device 100 will be described. FIG. 8 is a block diagram showing an electrical configuration of the control device 100 of the flying object 1.

The control device 100 is a computer that has, for example, a CPU, a memory, and the like and executes a control program, and executes various control processes such as flight of the flying object 1. The control device 100 includes a power supply device such as a battery 101, a detection unit such as a camera 102, a communication device 103 that transmits and receives signals to and from an external device such as an operation controller and GPS, a gyro sensor 104, an acceleration sensor 105, and an altitude sensor 106. Various electronic devices such as are electrically connected.

As shown in FIG. 8, the control device 100 includes a flight control unit 110 that controls the flight of the flying object 1, an open control unit 120, and an air flow control unit 130. The flight control unit 110 is composed of a part of a program stored in the control device 100.

The flight control unit 110 controls the flight of the flying object 1 based on various information from the camera 102, the communication device 103, the gyro sensor 104, the acceleration sensor 105, the altitude sensor 106, and the like. The flight control unit 110 adjusts the rotation speed of the rotary blade 20 and the like by controlling the drive of the rotary blade drive unit 21.

The open control unit 120 changes the angle of the expansion support member 50 based on the information from the rotary wing drive unit 21, the flight control unit 110, and the like indicating that the flying object 1 has landed at the position where the sign should be displayed. The drive device 60 is driven to open the injection port 41 of the expansion member 40.

The air flow control unit 130 drives the angle changing motor 32 based on the information indicating that the injection port 41 from the open drive device 60, the open control unit 120, etc. has been opened, and drives the rotation shaft of the rotary blade 20. Change the angle of A. Then, by changing the rotation direction of the motor of the rotary blade drive unit 21, an air flow that reverses the rotation direction of the rotary blade 20 is generated.

Next, a sign display method using the flying object 1 will be described with reference to FIG. 9. FIG. 9 is a flowchart showing a sign display method using the flying object 1. In this embodiment, a sign display method for traffic regulation by the flying object 1 in the event of a disaster such as an earthquake or a heavy rain will be described as an example.

First, the control device 100 acquires the coordinates of a dangerous area where flooding, landslides, and the like are likely to occur from the camera 102, the communication device 103, and the like (S1).

The flight control unit 110 controls the rotation of the motor of the rotor blade drive unit 21 based on the acquired coordinate information to fly to the dangerous area (S2). Since the expanding member 40 of the flying object 1 during flight is in a contracted state, the air resistance received during flight is suppressed.

Upon arriving at the dangerous area, the flight control unit 110 searches for a flat and stable landing point based on the information of the camera 102 and the like, and lands at the found landing point while controlling the rotation of the motor of the rotor blade drive unit 21 ( S3).

When the flying object 1 lands, the open control unit 120 drives the open drive device 60 to bring the tips of the pair of expansion support members 50 that support the expansion member 40 close to each other (S4). Specifically, by driving the open drive device 60, the connection portions of each of the pair of expansion support members 50 and the expansion member 40 come close to each other. That is, the open drive device 60 moves the pair of expansion support members 50 so as to shorten the distance between each of the pair of expansion support members 50 and each connection portion of the expansion member 40. As a result, the wires 44 and 45 are curved and separated in the vertical direction, and the injection port 41 is opened. Further, when the wires 44 and 45 are separated from each other in the vertical direction, the engaging member 47 is disengaged from the gap between the wires 44 and 45, and the force for pulling the expansion member 40 toward the injection port 41 in the radial direction is released.

When the inlet 41 is opened, the air flow control unit 130 drives the angle changing motor 32 to tilt the rotation axis A of the rotary blade 20 from the vertical direction to the horizontal direction (S5).

With the rotary shaft A tilted in the horizontal direction, the air flow control unit 130 reversely rotates the motor of the rotary blade drive unit 21, and an air flow is generated from the rotary blade 20 toward the injection port 41 of the expansion member 40. Let me. By this air flow, air is sent to the injection port 41 of the expansion member 40 (S6).

When air flows into the injection port 41, the expansion member 40 folded in a bellows shape expands radially outward. The expanded state of the expanding member 40 is maintained for a predetermined time requiring traffic regulation (S7).

According to the present embodiment, the injection port 41 of the expansion member 40 flies in a closed state, the injection port 41 is opened in a state where the flying object 1 lands, and the expansion member 40 is operated by the air flow of the air flow generator 19. Can be inflated. As a result, it is possible to reduce the generation of air resistance that hinders flight by the expansion member 40 during flight, and the expansion member 40 on which a sign is drawn using the air flow of the air flow generator 19 used for flight after landing. Can be greatly expanded. In addition, it is not necessary to maintain the display of the sign in the air, and it is possible to avoid the consumption of electric power required to maintain the flying object 1 in a stable state in the air. Therefore, it is possible to quickly regulate traffic in dangerous areas and display highly visible signs while suppressing power consumption.

Next, the flying object 1A according to the second embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 10 is a front view showing a state in which the expansion member 40A of the flying object 1A is inflated. As shown in FIG. 10, the flying object 1A includes a main body portion 11, an arm portion 12 extending from the main body portion 11, an air flow generator 19 for generating an air flow for flying the flying object 1A, and a label. It is provided with an expansion member 40A capable of displaying the above, an expansion support member 50A for supporting the expansion member 40A, and an open drive device 60 for opening the injection port 41.

As shown in FIG. 10, the expansion member 40A is arranged above the air flow generator 19. In the flying object 1A of the present embodiment, a total of two expansion members 40A are arranged, and the two expansion members 40 are arranged so as to face each other with the main body portion 11 interposed therebetween in a plan view. The expansion member 40 arranged on one side of the main body 11 is in a positional relationship facing the rotation axis A of one of the rotation blades 20 of the six air flow generators 19. Similarly, the expansion member 40 arranged on the other side of the main body 11 is also arranged so as to correspond to the above-mentioned rotary blade 20 among the rotary blades 20 of the six air flow generators 19 with the main body 11 interposed therebetween. The positional relationship is such that the rotary blade 20 faces the rotation axis A of the rotary blade 20.

The expansion member 40A of the present embodiment is composed of a cloth-like member that can be deformed into a contracted state folded in a bellows shape in the vertical direction and an expanded state expanded in the vertical direction and the radial direction. Similar to the inflatable member 40 of the first embodiment, the inflatable member 40A is held in a contracted state in order to suppress the generation of air resistance during flight, and after the flying object 1A lands in a dangerous area requiring traffic regulation, Transition from contracted state to expanded state to display traffic regulation signs.

The expansion member 40A of the present embodiment is configured in a cylindrical shape having both ends open and an injection port 41A into which air is injected into the lower end. The inflatable member 40 of the first embodiment extends radially outward in the inflated state and the tip portion is closed, but the inflatable member 40A of the present embodiment extends upward in the inflated state and both ends are open. It is formed in a shape.

The inlet 41A has a substantially circular shape in the expanded state, and is arranged at a position facing the rotation axis A of the rotary blade 20. In the contracted state, the edge of the injection port 41A is closed in a straight line. Further, a pair of hinge portions 42, 43 are attached to the edges of the injection port 41A at positions facing each other with the center of the injection port 41A interposed therebetween, as in the injection port 41 of the first embodiment, and the pair of hinge portions 42 are attached. A pair of wires 44, 45 are hung between the wires 44 and 43.

The expansion support member 50A is a pair of rod-shaped members for supporting the expansion member 40A above the air flow generator 19. In the present embodiment, since the two expansion members 40A are arranged on the flying object 1A, a total of four expansion support members 50 are arranged.

In the expansion support member 50A, one end (hereinafter, base end) is connected to the open drive device 60 built in the main body 11, and the other end (hereinafter, tip) is a hinge of the expansion member. It is connected to units 42 and 43. The base end portion of the expansion support member 50A is arranged above the arm portion 12. Further, the expansion support member 50A is arranged at a position where the rotary blade 20 does not come into contact with the rotary blade 20 even if the rotary blade 20 rotates.

In the present embodiment, after the flying object 1A has landed in a dangerous area where traffic regulation is required, the open driving device 60 operates to bring the tips of the pair of expansion support members 50A closer to each other. As a result, the pair of hinge portions 42 and 43 approach each other, the wire 44 is curved toward the main body portion 11 in the radial direction, the wire 45 is curved outward in the radial direction, and the injection port 41A is opened above the rotary blade 20. Will be done. By rotating the motor of the rotary blade drive unit 21 in the reverse direction, an air flow upward from the rotary blade 20 is generated. As a result, air flows into the inside of the expansion member 40A, and the expansion member 40A expands upward to be in an expanded state.

According to the present embodiment, since the sign can be displayed so as to extend upward by the inflated member 40A, the visibility from a distance can be further improved. Further, since the injection port 41A of the expansion member 40A is located above the rotary blade 20, air can flow into the expansion member 40A without changing the angle of the rotation axis A of the rotary blade 20. Further, since the air flow generator 19 generates an air flow upward from the rotary blade 20 while the expansion member 40A is inflated, a downward force that presses the flying object 1A against the ground is applied, so that the flight Body 1A can be maintained in a more stable state.

As is clear from the above description, each embodiment of the present invention has an advantageous effect by each of the following configurations.

The flying object (1,1A) according to the embodiment of the present invention is an expansion member (40) having an air flow generator (19) for generating an air flow for flight and an inflatable injection port (41, 41A). , 40A) and an open drive device (60) that opens the injection port (41, 41A) of the expansion member (40, 40A), and the injection port (41, 41A) is opened by the open drive device (60). Later, the air flow generator (19) can inject air from the injection port (41, 41A) to inflate the expansion member (40, 40A). As a result, by writing a sign on the expansion member (40, 40A), it is possible to display with high visibility. As a result, the inflatable member (40, 40A) on which the sign is drawn can be carried in a compact state without opening the injection port (41, 41A) to a dangerous area where traffic regulation or the like is required. Further, the expansion member (40, 40A) can be greatly expanded by utilizing the air flow of the air flow generator (19) used for flight. Therefore, it is possible to display a sign with high visibility while suppressing power consumption.

In the flying object (1, 1A) according to the embodiment of the present invention, the air flow generator (19) generates an air flow in a direction different from that during flight when viewed from the main body (11), thereby generating an injection port (1). Air is injected from 41, 41A) to inflate the expansion member (40, 40A). As a result, the expansion member (40, 40A) can be expanded by an air flow in a direction different from that during flight, so that the arrangement of the expansion member (40, 40A) can be adjusted.

In the flying object (1,1A) according to the embodiment of the present invention, the air flow generator (19, 19A) has a rotary wing (20, 20A) that generates an air flow for flight by rotation, and rotates. By making the rotation direction of the blade (20, 20A) different from the rotation direction during flight, an air flow in a direction different from that during flight is generated to expand the expansion member (40, 40A). As a result, the direction of the air flow can be changed without changing the appearance of the flying object 1.

The flying object (1) according to the embodiment of the present invention is a rotary wing (20) in a state where the angle of the rotary axis (A) of the rotary wing (20) is different from the angle of the rotary axis (A) during flight. Make the direction of rotation different from the direction of rotation during flight. Thereby, various arrangement patterns of the expansion member (40) can be realized.

In the flying object (1,1A) according to the embodiment of the present invention, an air flow is generated after the injection port (41, 41A) is opened by the open driving device (60) with the flying object (1,1A) landing. A control unit (100) that controls the expansion of the expansion member (40, 40A) by injecting air from the injection port (41, 41A) by the device (19) is further provided. As a result, the expansion member (40, 40A) can be automatically expanded, so that it is not necessary to steer or instruct the flying object (1, 1A) after landing. Further, since the expansion member (40, 40A) is automated to expand after landing, the expansion member (40, 40A) does not expand during flight, and the power consumption can be reduced more reliably.

The flying object (1,1A) according to the embodiment of the present invention has a main body portion (11), an arm portion (12) extending from the main body portion (11) and supporting an air flow generator (19), and a main body portion. A plurality of expansion support members (50, 50A) arranged in the portion (11) or the arm portion (12) and connected to the expansion member (40, 40A) are further provided, and the open drive device (60) is the expansion support member (60). By moving 50,50A), the injection port (41,41A) is opened. As a result, the injection port (41, 41A) can be opened by using the member that supports the expansion member (40, 40A), so that an increase in the number of parts can be avoided.

In the flying object (1,1A) according to the embodiment of the present invention, the expansion member (40) is connected to a pair of expansion support members (50, 50A), and the open drive device (60) is a pair of expansion support members. By moving the pair of expansion support members (50, 50A) so as to shorten the distance between each connection portion of (50, 50A) and each connection portion of the expansion member (40), the injection port (41, 41A) is opened. open. As a result, a force is applied to the expansion member (40) from the two expansion support members (50, 50A), so that the injection port (41, 41A) can be opened more reliably.

In the flying object (1) according to the embodiment of the present invention, the expansion member (40) has a bag shape, an injection port (41) is formed at one end, and the other end is closed. As a result, the air injected from the injection port (41) does not escape from the other end of the expansion member (40) to the outside but collides with the other end and is diffused inside the expansion member (40), which is weaker. The expansion member (40) can be efficiently expanded by the air flow.

In the flying object (1) according to the embodiment of the present invention, a linear member (1) connected to the inside of the inflatable member (40) and having a length shorter than the injection port (41) to the other end of the inflatable member (40). 46) and an engaging member (47) fixed to the linear member (46) are further provided, and the engaging member (47) is engaged with the injection port (41) outside the expansion member (40). As a result, the other end side of the expansion member (40) is held in a state of being attracted to the injection port (41) side. As a result, the length from the other end side of the expansion member (40) to the injection port (41) side can be shortened, and the expansion member (40) in a more compact state can be transported. Therefore, the air resistance acting on the expansion member (40) during flight can be further reduced.

In the flying object (1A) according to the embodiment of the present invention, the expansion member (40A) has a cylindrical shape, and both ends are opened. As a result, the air flow injected from the injection port (40A) is not obstructed and exits from the expansion member (40A), so that the air flow collides with the expansion member (40A) to generate the flying object (1A). The force applied to the airframe (1A) can be suppressed, and the load applied to the flying object (1A) can be reduced.

In the flying object (1) according to the embodiment of the present invention, the expanding member (40) expands in a direction away from the center of the flying object (1) in a plan view. As a result, the expansion member (40) can be expanded in the left-right direction, so that a sign can be displayed so as to block the road, and traffic regulation can be performed more effectively.

In the flying object (1A) according to the embodiment of the present invention, the expansion member (40A) is located above the air flow generator (19) and expands upward. This makes it possible to display a highly distinguishable sign from a distance.

The sign display method according to the embodiment of the present invention includes a flying object (1,1A) including an air flow generator (19) for generating an air flow for flight and an expansion member (40, 40A) that expands due to the inflow of air. ) Is a sign display method for displaying a sign, which includes a step of landing an air vehicle (1,1A) including an expansion member (40, 40A) with the injection port (41, 41A) closed. With the aircraft (1,1A) landing, the step of driving the open drive device (60) that opens the injection port (41, 41A) and the open drive device (60) by the air flow generator (19). It includes a step of injecting air from the injection port (41, 41A) to inflate the expansion member (40, 40A). As a result, the inflatable member (40, 40A) on which the sign is drawn can be carried in a compact state to a dangerous area where traffic regulation or the like is required without opening the injection port (41, 41A) in the air. Therefore, it is possible to quickly reach the dangerous area with less electric power while suppressing the air resistance received by the flying object (1). Further, the expansion member 40 can be greatly expanded by utilizing the air flow of the air flow generator (19) used for flight after landing. Furthermore, since it is not necessary to maintain the display of the sign in the air, it is possible to avoid the consumption of electric power required to keep the flying object (1,1A) in a stable state in the air. Therefore, it is possible to quickly regulate traffic in dangerous areas and display highly visible signs while suppressing power consumption.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like to the extent that the object of the present invention can be achieved are included in the present invention. be.

In the above embodiment, the base end portions of the expansion support members 50 and 50A are connected to the main body portion 11, but the base end portions of the expansion support members 50 and 50A may be connected to the arm portion 12.

In the above embodiment, two expansion members 40, 40A are arranged on the flying objects 1, 1A, but one expansion member 40, 40A may be arranged or three expansion members 40, 40A may be arranged, and the number thereof is particularly large. Not limited.

In the above embodiment, by driving the motor, the pair of expansion support members 50 and 50A approach each other to open the injection ports 41 and 41A, but the fastener that regulates the movement of the pair of expansion support members 50 approaching each other is provided. The inlets 41 and 41A may be opened by providing and removing the fasteners.

In the first embodiment, the linear member 46 and the engaging member 47 are used to keep the lengths of both ends of the expanding members 40 and 40A short, but the both ends of the expanding members 40 and 40A are gripped. The lengths of both ends of the expansion members 40 and 40A may be kept short by using a clip or the like.

The flying object 1 of the first embodiment has an injection port 41 at one end and includes a bag-shaped expansion member 40 whose tip is closed, but a cylindrical expansion in which both ends are opened instead of the expansion member 40. It may be configured to include the member 40A.

The flying object 1A of the second embodiment includes a cylindrical inflatable member 40A whose both ends are open, but even if the flying object 1A is provided with a bag-shaped inflatable member 40A whose tip is closed instead of the inflatable member 40. good.

Further, in each embodiment, the unmanned flying object is described as an example of the flying object, but the present invention is not limited to the unmanned flying object. For example, the present invention can be applied to an air vehicle that transports a person to a destination by unmanned maneuvering.

1,1A ... flying object, 19 ... air flow generator, 40, 40A ... expansion member, 41, 41A ... injection port, 60 ... open drive device

Claims (14)

An airflow generator that generates an airflow for flight,
With an inflatable member with an inlet,
The air flow generator is a flying object that injects air from the injection port and expands the expansion member by generating an air flow in a direction different from that during flight. The airflow generator has rotary wings that generate an airflow for flight by rotation.
The flying object according to claim 1, wherein an air flow in a direction different from that during flight is generated by making the rotation direction of the rotary blade different from the rotation direction during flight to expand the expansion member. The flying object according to claim 2, wherein the rotation direction of the rotary wing is different from the rotation direction during flight in a state where the angle of the rotation axis of the rotary wing is different from the angle of the rotation axis during flight. A control unit that injects air from the injection port and expands the expansion member by controlling the air flow generator to generate an air flow in a direction different from that during flight while the flying object has landed. The flying object according to any one of claims 1 to 3 to be further provided. The flying object according to any one of claims 1 to 3, further comprising a drive unit for changing the direction of the air flow generated by the air flow generator. The fifth aspect of claim 5 is provided with a control unit that controls to drive the drive unit so that the air flow generator can generate an air flow in a direction different from that during flight when the air vehicle has landed. Aircraft. The control unit controls to drive the drive unit so that the air flow generator can generate an air flow in a direction different from that during flight while the flying object has landed, and the air flow unit. The flying object according to claim 6, wherein air is injected from the injection port by controlling a generator to generate an air flow in a direction different from that during flight, and controlling the expansion of the expansion member. The flying object according to any one of claims 1 to 7, wherein the inflatable member has a bag shape, the injection port is formed at one end, and the other end is closed. A linear member connected to the inside of the inflatable member and having a length shorter than that from the injection port of the inflatable member to the other end.
Further provided with an engaging member fixed to the linear member,
The flying object according to claim 8, wherein the engaging member is engaged with the injection port on the outside of the expansion member, so that the other end side of the expansion member is held in a state of being attracted to the injection port side. .. The flying object according to any one of claims 1 to 7, wherein the inflatable member has a cylindrical shape and both ends are opened. The flying object according to any one of claims 1 to 10, wherein the expanding member expands in a direction away from the center of the flying object in a plan view. The flying object according to any one of claims 1 to 10, wherein the expansion member is located above the air flow generator and expands upward. The inflatable member is a cloth-like member that can be deformed into a contracted state folded in a bellows shape toward the center side of the flying object and an expanded state expanded in a direction away from the center of the flying object, and is an injection port. The flying object according to any one of claims 1 to 11, which transitions to the expanded state by injecting air from the air. A sign display method for displaying a sign using an air flow generator that generates an air flow for flight and an air vehicle provided with an expansion member that expands due to the inflow of air.
A step of landing the flying object with the inflatable member having an inlet, and
A label including a step of injecting air from the injection port and expanding the expansion member by generating an air flow in a direction different from that at the time of flight by the air flow generator in a state where the flying object has landed. Display method.

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