JP3115292U - Windmill-type rotating signboard with rotation suppression - Google Patents

Abstract

[PROBLEMS] To rotate a signboard in synchronism with a windmill using only natural energy wind power, and to introduce a highly unique design. Provide a signboard.
A windmill or blade that receives wind for causing a rotational motion, or a wing portion and a signboard portion are structurally separated, and the windmill portion and the signboard portion are connected or interlocked with a rotating shaft that rotates. This greatly expands the structural constraints on the signboard and enables the introduction of highly unique designs. By linking the windmill part and the signboard part on the rotating shaft with magnetic force, the windmill part rotates in proportion to the wind speed during strong winds, but the signboard part slips due to the rotation until it can balance with the magnetic force, When the wind is strong, the rotation of the signboard is not proportional to the rotation of the windmill, and is limited to a certain limit.
[Selection] Figure 1

Description

The present invention relates to a windmill-type rotating signboard that uses only natural energy wind power to rotate the signboard in synchronism with the windmill, and suppresses the number of rotations in strong winds.

Devices that rotate signboards using an electric motor that uses electric energy as a drive source have been widely put into practical use. In addition, the signboard rotated by wind power displays a desired advertisement on the windmill, blades, and wings themselves. However, windmills and wings receive wind and convert them into rotational motion. For the first purpose, the shape of the windmill and wings are greatly limited, and due to this shape restriction, a unique design is adopted. It ’s hard. That is, there is little freedom as a signboard and it is difficult to put it into practical use as an effective signboard. In addition, wind turbines, blades, and wings will rotate at high speed if there is no control function in strong winds, and the characters and designs displayed on them will not be decipherable and will not serve as signs.

  A signboard using a windmill displays a desired advertisement on the windmill or wing, but is naturally constrained by its shape due to the structure that rotates by receiving wind power. By being restricted by the shape, the effect as a signboard is low. Therefore, the windmill portion and the signboard portion are separated, and the signboard portion is connected to or synchronized with the windmill portion. By greatly reducing the restrictions on the shape of the signboard portion, it is possible to give the signboard portion uniqueness and design, and to solve the above-mentioned drawbacks. In addition, when the wind turbine rotates at high speed during strong winds, the number of rotations of the signboard portion is suppressed to a constant rotation so as to solve the above-mentioned drawbacks.

  In the present invention, a windmill portion that receives wind and a billboard portion that is used for advertisement are separated from each other and are connected by a rotating shaft. Fix the windmill part to the rotating shaft. A disk with magnets on the circumference is fixed to the same axis of rotation. It has the same rotation axis as the rotation axis and fixes the signboard part that can rotate freely. A disk opposite to the disk on which the magnet is arranged is fixed to the sign portion. By fixing the disks with these two magnets facing each other, the rotation axis of the windmill part and the signboard part are made the same, but by structurally separating, the restriction on the signboard shape is greatly reduced, The problem is solved. The rotation of the signboard rotates in synchronization with the windmill until this balance is achieved due to the magnetic coupling between the disks, and does not follow the high-speed rotation of the windmill that breaks the balance.

  As described above, by separating the windmill part and the signboard part of the present invention from the structure, the structural restrictions on the signboard part are greatly relaxed, and a design with a high advertising effect as a signboard and a highly unique signboard It becomes feasible. Due to its simple structure, rotation during strong winds is suppressed, and it will not lose its use as a signboard. Unlike billboards that are rotated by electric motors, they rotate with the power of a windmill, so they can be used as environmentally friendly billboards that use natural energy and as an environmentally friendly billboard. Useful.

  In order to rotate even in a low wind, a paddle type windmill, a Savonius type windmill having a high starting force, or a complex or modified windmill thereof is used and fixed to a vertical rotating shaft. The upper and lower ends of the rotating shaft are attached to ball bearings, and the ball bearings are respectively fixed to the support frame. The rotating shaft is free to rotate with respect to the support frame and is rotated by the windmill. A thin disk rotating in the same direction is fixed to this rotating shaft. The magnetic poles of the magnets are arranged on one side of the disk. A ball bearing is attached to the rotating shaft at the lower or upper part of the windmill, and the signboard portion is fixed to the bearing. The sign portion is free to rotate with respect to the rotation axis. A disk having the same shape as the disk on which the magnet attached to the rotating shaft is arranged and having the magnetic poles arranged in reverse is fixed to the upper or lower part of the sign so that the center of rotation is the same. The windmill part and the signboard part are arranged so that the two disks face each other. The number of rotations of the signboard can be adjusted by the size of the disk, the size of the magnet, and the gap between the magnets.

  Hereinafter, an embodiment will be described with reference to the accompanying drawings. Reference numeral 1 denotes a windmill made of an appropriate material such as FRP, C-FRP, or highly durable plastic, and is connected to a vertical rotating shaft 3. An example is a four-blade paddle type windmill. The windmill is preferably a paddle type windmill or a Savonius type windmill having high startability in order to rotate the sign even when the wind speed is low. Moreover, in order to use for an advertisement, these compound and deformation type windmills may be used.

  The upper and lower ends of the rotating shaft 3 are fixed to ball bearings, and these ball bearings are fixed to the upper support frame 1 and the lower support frame 9, respectively. The upper support frame 1 and the lower support frame 9 are fixed to a support column 10 and installed at an arbitrary location by the support column 10. The rotating shaft is free to rotate with respect to the upper support frame 1 and the lower support frame 9 and is rotated by the rotation of the windmill.

  A windmill side disk 4 is fixed to the rotating shaft 3. The windmill side disk 4 is provided with a windmill side magnet 6 having the same magnetic pole on one surface of the disk. The signboard 5 has the same shape as the windmill-side disk 4 and the signboard-side disk 8 in which the signboard-side magnet 7 is arranged on one side of the disk so as to be symmetrical with the windmill-side disk 4 so that the rotation center is the same as the rotation center of the signboard. Secure to. The windmill side magnet 6 and the signboard side magnet 7 are arranged so as to have different attracting forces.

  A ball bearing 11 is attached to the upper and lower vertical shaft centers of the signboard 5, and this ball bearing is fixed to the rotary shaft 3. The signboard 5 is rotatable with respect to the rotary shaft 3, but the signboard rotates in conjunction with the windmill by the attractive force of the windmill side magnet 6 and the signboard side magnet 7. The signboard needs to be lightweight in order to enhance uniqueness, design, or rotation. For this purpose, a sheet-like or film-like lightweight material such as polyester or polyethylene is attached or fixed to a frame of lightweight aluminum, FRP, C-FRP or the like.

  The signboard 5 rotates in synchronism with the windmill by the attraction force of the windmill side magnet 6 and signboard side magnet 7, but when the windmill 2 is rotated more than this attraction force, the signboard 5 is slipped and can be rotated in synchronization. I can't. That is, the number of rotations of the sign 5 is suppressed. The number of rotations to be suppressed is related to the magnet's attractive force and the mass of the sign 5, and the windmill side disk 4, the signboard side disk, the windmill side disk magnet, the signboard side disk magnet, and the gap between the magnets are adjusted. Thus, the number of rotations to be suppressed can be changed.

It is an elevation which shows the Example of the windmill type rotation signboard with rotation suppression of this invention. Sectional drawing of the rotation suppression function part of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper support frame 2 Windmill 3 Rotating shaft 4 Windmill side disk 5 Signboard 6 Windmill side disk magnet 7 Signboard side disk magnet 8 Signboard side disk 9 Support frame bottom 10 Post 11 Signboard fixed ball bearing

Claims (2)

  A windmill with two or more rotor blades that receives wind and is connected to a vertical rotating shaft that is connected to this rotor blade. The rotor blade is connected to the rotating shaft by a connecting member separately from the structure. The windmill-type rotating signboard is characterized in that it uses no energy other than wind power, such as an electric motor. It has a disk with a magnet that is connected to the rotating shaft of the windmill and rotates in the same way as the rotating shaft, and a disk with a magnet that faces the disk with the magnet. The rotating shaft and the rotating shaft are the same, and the rotating shaft rotates. 2. The windmill according to claim 1, wherein the windmill is a free signboard and is rotated by a magnet's attractive force, and cannot follow a rotation greater than the attractive force, and the rotational speed is suppressed.

Images