CN110528420B

CN110528420B - Display device

Info

Publication number: CN110528420B
Application number: CN201810516278.2A
Authority: CN
Inventors: 廻本一夫
Original assignee: Kaboy Co ltd
Current assignee: Kaboy Co ltd
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2022-06-24
Anticipated expiration: 2038-05-25
Also published as: CN110528420A

Abstract

The invention provides a novel display device which is light in weight, low in manufacturing cost and capable of easily adjusting magnetic force. The display device includes a display device main body (10) having an annular flange (20) and a plurality of magnet members (30) detachably attached to the flange (20), the flange (20) has a plurality of attachment holes (40) along its circumferential direction, to which the magnet members (30) are attached, and the magnet members (30) accommodate permanent magnets (32) in top covers (31) detachably attached to the attachment holes (40). Thus, the weight of the whole display device can be reduced, the manufacturing cost can be reduced, and the adsorption force can be easily adjusted only by appropriately increasing or decreasing the number of the magnet members (30) to be mounted.

Description

Display device

Technical Field

The present invention relates to a display device such as a steel vehicle deck detachably installed on a motor vehicle carrier.

Background

Conventionally, a vehicle transport ship exclusively used for transportation of automobiles has a plurality of vehicle decks in a ship, and each deck is provided with a plurality of display devices for displaying routes of vehicles for motor transportation, parking positions thereof, and attention during traveling. As one of the display devices, a cone shaped cone which is easily detachable and installed is used, but the cone for the automobile carrier is larger than a cone which is generally installed to improve visibility from a driver's seat of the motor vehicle, and a large cone having a height of more than 1.5m is used, for example.

In addition, since such a cone for a large vehicle carrier is made of a light synthetic resin as in a general cone, an annular weight member (weight) is placed on a flange portion at a bottom portion thereof in order to stably install the cone, and the flange portion is pressed by the weight thereof so as not to move or rattle. However, since the ring-shaped counterweight needs a certain amount of weight, for example, a weight of at least about 10kg, in order to stabilize the cone, a large amount of labor is required for the installation, transportation, and removal operations.

Therefore, as shown in, for example, patent document 1 below, the present inventors have proposed a new counterweight for a display device, which is formed as a separate annular counterweight incorporating a magnet, is attached to a flange of a cone, and is attracted to a vehicle deck made of steel by an attractive force of the magnet incorporated in the counterweight to press the cone so that the cone is not moved, and the weight of the entire counterweight can be reduced, and a display device using the new counterweight for a display device. Further, patent document 2 below proposes a triangular pyramid in which a magnet is mounted in advance on a base.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2015-143418

Patent document 2: japanese patent laid-open publication No. 2014-105561

Disclosure of Invention

Problems to be solved by the invention

Further, in the counter weight for a display device and the display device using the counter weight for a display device of patent document 1, since the display device and the counter weight are separate bodies, there is a problem that they need to be combined when they are installed. Further, since the annular weight needs to secure a certain level of strength for firmly holding the plurality of magnets, it is desirable to have a certain level of weight and to further reduce the weight. Further, since the display device and the counterweight are configured as separate bodies, the overall manufacturing cost increases.

On the other hand, the triangular pyramid of patent document 2 has a structure in which a sheet-like magnet is adhered to the entire bottom surface of the base portion, and therefore, it is difficult to adjust the attraction force (magnetic force), and when it is installed on a vehicle deck made of steel as described above, depending on the installation position and situation, there is a possibility that the attraction force is low, the stability is insufficient, or conversely, the attraction force is too high to be detached, and it is difficult to secure the stability, the operability, and the like.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a novel display device which is lightweight and inexpensive to manufacture, and which can easily adjust magnetic force.

Means for solving the problems

In order to solve the above problem, a first aspect of the present invention is a display device including a display device main body having an annular flange which is brought into contact with a magnetic surface, and a plurality of magnet members which are detachably attached to the flange, wherein the flange has a plurality of attachment holes to which the magnet members are respectively attached along a circumferential direction thereof, and the magnet members are configured such that permanent magnets are accommodated in a top cover which is detachably attached to the attachment holes.

According to this configuration, since the magnet member is integrally attached to each of the attachment holes of the flange, the magnet member is attracted to a vehicle deck made of magnetic steel, and the like, and firmly presses the flange, thereby enabling the display device main body to be stably installed. As a result, since no weight for pressing the flange is required, the entire display device can be reduced in weight, and the manufacturing cost can be reduced. Further, the attraction force can be easily adjusted by appropriately increasing or decreasing the number of the magnet members attached to the respective attachment holes of the flange.

A second aspect is the display device of the first aspect, wherein the top cover includes a cylindrical top cover main body having a lower opening for receiving the permanent magnet, and a lid portion that closes an upper opening of the top cover main body and has a diameter larger than a diameter of the mounting hole, and a protrusion portion is provided on an outer peripheral surface of the top cover main body.

With this configuration, the attachment can be easily performed only by inserting the top cover into each of the attachment holes of the flange from above. Further, since the protrusion provided on the outer peripheral surface of the top cover main body is engaged with the lower edge of the mounting hole after mounting, the top cover does not easily come off from the mounting holes.

A third aspect is the display device of the second aspect, wherein a cavity is provided in the top cover main body. According to such a structure, even if the top cover main body is extended (raised) or increased in size, the weight can be further reduced while suppressing the increase in weight.

A fourth aspect is the display device according to the second or third aspect, wherein a gap is provided between an edge portion of the lower opening of the top cover main body and the permanent magnet housed in the top cover main body. According to such a structure, even when the flange portion is placed on the steel vehicle deck, the edge portion of the lower opening portion of the roof main body is in contact with the deck, and the permanent magnet therein can be prevented from directly contacting the vehicle deck.

A fifth aspect is characterized in that, in the display device of the first to fourth aspects, the permanent magnet is a neodymium magnet. In this way, when a neodymium magnet, which is one of rare earth magnets, is used, strong attraction force can be obtained even with a small number of magnet members due to its strong magnetic force, and therefore, the amount of magnet members used can be reduced, thereby achieving weight reduction and cost reduction.

A sixth aspect is the display device of the first to fifth aspects, wherein the display device main body has a conical shape or a columnar shape with the flange as a bottom. According to such a configuration, optimum display suitable for an installation position, visibility, a purpose of use, and the like can be performed.

A seventh aspect is characterized by comprising a display device main body having an annular flange and a plurality of magnet members detachably attached to the flange, the flange having a plurality of attachment holes for attaching the magnet members to each other along a circumferential direction thereof, and the attachment holes forming a housing case for housing a permanent magnet therein and holding the magnet by a top cover. According to such a structure, in addition to the above-described effects, the permanent magnet 32 can be prevented from coming off, and can be reliably prevented from being stolen.

Effects of the invention

According to the present invention, since the magnet member is integrally attached to each attachment hole of the flange, the magnet member is attracted to a deck made of magnetic steel or the like and firmly presses the flange, thereby enabling the display device main body to be stably installed. As a result, since no weight for pressing the flange is required, the entire display device can be reduced in weight, and the manufacturing cost can be reduced. Further, the attraction force can be easily adjusted by appropriately increasing or decreasing the number of the magnet members attached to the respective attachment holes of the flange.

Drawings

Fig. 1 is an overall perspective view showing one embodiment of a display device 100 of the present invention.

Fig. 2 is an enlarged perspective view showing the vicinity of the bottom of the display device 100 of the present invention.

Fig. 3 is an enlarged perspective view of the display device 100 of the present invention as viewed from the bottom thereof.

Fig. 4 is an exploded perspective view showing the structure of the magnet member 30.

Fig. 5 is a vertical cross-sectional view showing a state before the magnet member 30 is attached to the attachment hole 40.

Fig. 6 is a vertical cross-sectional view showing a state in which the magnet member 30 is mounted in the mounting hole 40.

Fig. 7 is a partially enlarged cross-sectional view showing another embodiment of the magnet member 30.

Fig. 8 is a perspective view showing an example in which the reflective material 11 is also attached to the lower section of the display device main body 10

Fig. 9 is a cross-sectional view showing an example in which the folded-back portion 21 is formed along the peripheral edge portion of the flange 20.

Fig. 10 is an exploded perspective view showing another embodiment of the magnet member 30.

Fig. 11 is an exploded cross-sectional view showing another embodiment of the magnet member 30.

Fig. 12 is a sectional view showing another embodiment of the magnet member 30.

Fig. 13 is an overall perspective view showing another embodiment of the display device 100 of the present invention.

Fig. 14 is a partially enlarged cross-sectional view showing another embodiment of the display device 100 of the present invention.

Fig. 15 is a partially enlarged cross-sectional view showing another embodiment of the display device 100 of the present invention.

Fig. 16 is a partially enlarged cross-sectional view showing another embodiment of the display device 100 of the present invention.

Description of the reference numerals

100: display device

10: display device main body

11: reflective material

20: flange

21: fold-back part

30: magnet component

31: top cover

32: permanent magnet

33: top cover main body

33 a: end of the lower opening

33 b: protrusion

33A: upper header body

33B: lower top cover main body

34: cover part

35: protrusion part

40: mounting hole

41: accommodating case

41 a: slit

41 b: protrusion

42: plane top cover

42 a: top cover main body

42 b: protrusion

c: gap

S: hollow spaces

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is an overall perspective view showing one embodiment of a display device 100 of the present invention, fig. 2 is an enlarged perspective view showing the vicinity of the bottom thereof, and fig. 3 is a perspective view seen from the bottom thereof. The display device 100 is used by being installed on a steel vehicle deck of an automobile carrier as described above, and includes an annular flange 20 at a lower end of the conical display device body 10, and a plurality of

magnet members

30 and 30 … … (six magnet members are provided at 60 ° intervals around the center in the present embodiment) at the flange 20, as shown in the drawing.

The display device main body 10 is formed of a hollow cylindrical material having excellent impact resistance, for example, a synthetic resin such as polyethylene, soft polyethylene, EVA resin, and soft vinyl chloride. Further, by attaching a reflecting material 11 or the like to a part of the outer surface thereof, or attaching another display member (not shown) or the like to the ceiling thereof, it is possible to display, for example, the route of a vehicle which has been moved in the ship, the parking position thereof, and the like during traveling. In addition to the conical shape, the display device main body 10 may have a columnar shape (rod shape), a tree shape, or other shapes, and may have a shape suitable for the installation position, the visibility, the purpose of use, or the like.

The flange 20 is provided to horizontally (at a right angle) project outward from the lower end of the display device main body 10, and is formed by press molding or the like integrally with the display device main body 10 made of the synthetic resin or the like. The flange 20 is a single plate material, and has a thickness substantially the same as that of the display device main body 10, for example, a thin plate of about 2mm to 5 mm.

As shown in fig. 2 and 3, the magnet members 30 are detachably attached to the plurality of attachment holes 40 and 40 … … from above the plurality of attachment holes 40 and 40 … … (six are provided at 60 ° intervals around the center in the present embodiment) formed along the circumferential direction of the flange 20, respectively, and include a top cover 31 made of metal, synthetic resin, or the like, and a permanent magnet 32, as shown in fig. 4.

As shown in fig. 4, the top cover 31 has a cylindrical or disk-shaped permanent magnet 32 housed in a cylindrical top cover body 33 having an open lower portion. That is, the top cover 31 has the following structure: the upper opening portion of the top lid main body 33 is closed by the flange-shaped lid portion 34, and a plurality of (four at 90 ° intervals around the center in the present embodiment) tapered protruding portions 35 extending in the axial direction are provided on the outer peripheral surface of the lower opening side thereof, and the permanent magnets 32 are housed inside the top lid 31 and adhesively fixed to the lower surface of the lid portion 34 of the top lid 31 with an adhesive or the like.

Further, since the outer diameter of the top cover main body 33 is smaller than the diameter of the mounting hole 40 and the outer diameter of the flange-like lid portion 34 is larger than the diameter of the mounting hole 40, the top cover main body 33 can be fitted into the mounting hole 40 from above the flange 20, and the lid portion 34 functions as a stopper and comes into contact with the upper surface of the flange 20 around the mounting hole 40, as shown in fig. 5 and 6.

As shown in the drawing, the distal ends of the plurality of

projections

35, 35 provided on the outer peripheral surface of the lower opening side of the top cover main body 33 are positioned to protrude outward from the edge of the mounting hole 40, and thereby engage with the edge of the mounting hole 40 to prevent the top cover main body 33 from coming off after mounting. In addition, since the mounting hole 40 and the top cover main body 33 are made of synthetic resin and are bent and deformed to some extent when the magnet member 30 is mounted to the mounting hole 40, the magnet member 30 can be instantly mounted by merely pressing it from above. Further, the magnet member 30 can be removed from the mounting hole 40 by strongly pushing up from the lower side thereof.

As shown in fig. 6, a gap c of about 1mm is formed between the end portion 33a of the lower opening of the roof main body 33 and the permanent magnet 32 housed in the roof main body 33, and even when the end portion 33a of the lower opening of the roof main body 33 is in contact with a floor (a vehicle deck) or the like, the permanent magnet 32 is not in direct contact with the floor. The upper surface of the lid portion 34 covering the upper opening of the cap main body 33 may be a flat disc shape, but it is desirable that the upper surface is formed into a slightly domed spherical shape as shown in the drawing, for example, in order to maintain a suitable strength without being easily damaged in appearance, rolling by a tire of a vehicle, or the like.

The permanent magnet 32 is not particularly limited, and known alnico magnets, ferrite magnets, rare-earth magnets, and the like can be used, but among them, rare-earth magnets having particularly strong attracting force are preferably used. Further, as the rare-earth magnet, samarium-cobalt magnets including samarium and cobalt, and neodymium magnets including neodymium and iron are known, and it is preferable to use a neodymium magnet particularly from the viewpoints of magnetic force, cost, and the like.

In the display device 100 of the present invention having such a configuration, when the flange 20 side is placed at a predetermined position on a steel plate deck of a motor carrier or the like, the plurality of

magnet members

30, 30 attached to the flange 20 strongly adhere to the magnetic steel plate deck by the magnetic force thereof and firmly press the flange 20, thereby stably setting the display device main body 10. Further, since the display device main body 10 is held by the magnetic force as described above, it can be attached to a wall surface, a ceiling surface, a pillar, a door, and the like made of a steel plate, not only a floor surface in a ship. Further, if the structure is a structure attracted by magnets, the structure can be easily attached to other steel structures including, of course, a roof, not only a ship but also a vehicle.

As a result, since the weight for pressing the flange 20 as in the conventional example is not required, the weight of the entire display device can be reduced, and the manufacturing cost can be reduced. Further, the attracting force can be easily adjusted by appropriately increasing or decreasing the number of the magnet members 30 attached to the respective attachment holes 40 of the flange 20 or changing the type of the permanent magnet 32. For example, when high stability (attraction force) is required, the magnet members 30 are mounted on all of the six mounting holes 40 as shown in fig. 2, but when not so high stability (attraction force) is required, if a total of three magnet members 30 are mounted every other one, it is possible to further reduce the weight and cost. In this regard, the same applies to changing the kind (magnetic force) of the permanent magnet 32 to be used.

Further, the magnet member 30 can be easily attached by simply inserting the top cover 31 into each of the mounting holes 40 of the flange 20 from above the mounting hole 40. Further, since the protrusion 35 provided on the outer peripheral surface of the top cover main body 33 is engaged with the lower edge of the mounting hole 40 after mounting, the top cover 31 does not easily come off from each mounting hole 40.

Further, since the magnet member 30 has the gap c between the end portion 33a of the lower opening of the top cover main body 33 and the permanent magnet 32 housed in the top cover main body 33, even when the flange 20 is partially roughly and directly provided on a steel deck, the permanent magnet 32 inside the top cover main body 33 does not directly contact the deck, and thus damage to the permanent magnet 32 due to impact or the like at the time of installation can be prevented. Further, a resin may be further applied to fill the gap c.

Further, the permanent magnet 32 of the magnet member 30 is attached to the inside of the top cover 31 by an adhesive or the like, but as shown in fig. 7, a plurality of projections 33b projecting inward from the inner peripheral side of the lower opening end portion 33a of the top cover main body 33 may be provided, and the lower end of the permanent magnet 32 may be pressed by the

projections

33b and 33b … …. With such a structure, the magnet member 30 can be prevented from falling off, and the magnet member 30 can be easily attached to the inside of the top cover body 33 simply by quickly pressing the magnet member.

Next, fig. 8 to 16 show another embodiment of the display device 100 of the present invention. First, in fig. 8, the reflective material 11 is attached not only to the upper stage portion but also to the lower stage of the display device main body 10, and this arrangement can further improve visibility. In fig. 9, a U-shaped or L-shaped folded portion 21 is integrally formed downward along the peripheral edge of the flange 20, and the strength of the flange 20 can be easily increased by this arrangement.

Next, in fig. 10 to 12, the structure of the magnet member 30 is made hollow (hollow) inside, and further weight reduction is achieved. That is, as shown in fig. 10 and 11, the magnet member 30 has a structure in which the cap main body 33 is composed of an upper cap main body 33A integrated with the lid 34 and a lower cap main body 338, and the lower cap main body 33B is connectable to and separable from a lower portion of the upper cap main body 33A via the screw portions 36a and 36B.

The magnet member 30 has a structure in which the permanent magnet 32 is attached to the lower cover main body 33B side, and a cavity S is formed in the upper cover main body 33A together with the lid 34. Therefore, as shown in fig. 12, if the lower cover main body 33B is attached (screwed) to the upper cover main body 33A, the length (height) of the cover main body 33 can be extended, and even then, the increase in weight can be suppressed, so that the entire weight can be further reduced.

Next, in fig. 13 to 15, a bottomed cylindrical housing case 41 is formed below each mounting hole 40, the permanent magnet 32 is housed in the housing case 41, and the permanent magnet 32 is restrained by a flat top cover 42. As shown in fig. 14, the flat top cover 42 has a plurality of (one, two in total) tapered protruding portions 42b formed on the opposing surfaces in the drawing on the outer side of a top cover main body 42a having a cylindrical inner cavity with an outer diameter capable of being accommodated in the mounting hole 40. As shown in fig. 15, when the permanent magnet 32 accommodated in the accommodating case 41 is accommodated in the mounting hole 40 in order to be restrained, the projection 42b of the flat top 42 is engaged with the slit 41a (one or two in total are provided on the facing surfaces in the drawing) formed in the accommodating case 41, thereby holding and preventing the permanent magnet 32 from falling off.

According to such a structure, in addition to the above-described effects, the permanent magnet 32 can be prevented from coming off and can be reliably prevented from being stolen. In addition to such a structure, as shown in fig. 16, if a U-shaped or L-shaped folded portion 21 is formed downward along the peripheral edge portion of the flange 20 or a reinforcing rib 22 extending in the circumferential direction and the radial direction is provided on the bottom surface of the flange 20, the strength of the flange 20 portion can be further improved while achieving a reduction in weight.

Claims

1. A display device is characterized in that a display panel is provided,

comprises a display device main body having an annular flange and a plurality of magnet members detachably attached to the flange,

the flange has a plurality of mounting holes along a circumferential direction thereof, through which all or a part of the plurality of magnet members are mounted, respectively, and,

the magnet member is configured to accommodate a permanent magnet in a top cover detachably attached to the mounting hole,

the top cover includes a cylindrical top cover main body having an open lower portion for accommodating the permanent magnet, and a lid portion closing an upper opening portion of the top cover main body and having a diameter larger than that of the mounting hole, and a protrusion portion is provided on an outer peripheral surface of the top cover main body.

2. The display device according to claim 1,

a cavity is provided within the cap body.

3. The display device according to claim 1,

a gap is provided between an edge portion of the lower opening portion of the top cover body and the permanent magnet housed in the top cover body.

4. The display device according to claim 2,

5. The display device according to any one of claims 1 to 4,

the permanent magnet is a neodymium magnet.

6. The display device according to any one of claims 1 to 4,

the display device main body is conical or columnar with the flange as the bottom.

7. The display device according to claim 5,