Vessel rotating-window device

Abstract

The present invention relates to a vessel rotating-window device which ensures a field of view by removing a rotating shaft that rotates a viewing-window, and which can reduce friction by using magnetism when the viewing-window rotates. The vessel rotating-window device of the present invention comprises: a fixed unit provided at a fixed window of the vessel; a rotating unit which is rotatably provided in the fixed unit, and which includes the viewing-window through which the outside can be observed from the inside of the vessel; an operating unit provided at the fixed unit and the rotating unit so as to rotate the rotating unit; and a friction-reducing module for reducing friction between the fixed unit and the rotating unit by using magnetism when the rotating unit rotates.

Description

Marine rotating window device

[0001] The present invention relates to a rotating window device for ships, and more specifically, to a rotating window for ships that secures a field of view by eliminating the rotation axis that rotates the viewing window and reduces friction when the viewing window rotates by utilizing magnetism.

[0002] Generally, ships are equipped with rotating windows on the fixed front windows of the wheelhouse to ensure visibility even in weather conditions such as snow or rain. The basic principle of the rotating window is to install a disc-shaped viewing pane on the fixed window, and when the pane is rotated using a motor, water droplets or foreign matter on the surface of the window are removed by centrifugal force.

[0003] However, since the motor for rotating the viewing window is located in the center of the window, there is a problem in that the viewing area through the window, which allows one to see the outside, is reduced by the motor. In other words, there is a problem where the field of view is obstructed by the rotating window, which was provided to ensure visibility.

[0004] Therefore, various technological developments are being made to solve these problems.

[0005] The proposed prior art swivel window (Republic of Korea Utility Model No. 1986-0003222) comprises a cylindrical fixed frame having an inner surface with a V-shaped cross-sectional shape, a rotating frame having an outer surface with a V-shaped cross-sectional shape corresponding to the V-shape of the fixed frame, a gap is left between the outer surface and the inner surface of the fixed frame, and a transparent plate is attached thereto, an air blowing means for levitating the rotating frame within the fixed frame by blowing compressed air into the gap, and a driving means for rotating the rotating frame levitating within the fixed frame. The air blowing means includes a slit extending across the entire circumference of the inner surface of the fixed frame. When compressed air is blown into the air blowing means, air is forcefully blown into the gap from the slit, and this air exerts force on the outer surface of the rotating frame to support the rotating frame rotatably within the fixed frame. As the rotating frame is rotated by the driving means, water droplets attached to the transparent plate attached to the rotating frame A technology is proposed that ensures good visibility by removing it through centrifugal force.

[0006] However, although conventional swivel windows can minimize obstruction of the view caused by the motor by moving the position of the motor, there are still problems in securing the view because the rotation axis is located in the center of the window and there is a power transmission means connecting the rotation axis and the motor, and there are problems such as reduced energy efficiency and frequent breakdowns due to friction occurring when the viewing window rotates.

[0007] The present invention was created to resolve the problems of the aforementioned prior art, and aims to provide a rotating window device for ships that secures a clear view from the wheelhouse and reduces friction when the viewing window rotates by removing the rotation axis at the center of the rotating window.

[0008] A rotating window device for a ship according to the present invention comprises a fixed unit installed in a fixed window of a ship, a rotating unit rotatably installed in the fixed unit and including a viewing window provided to allow observation of the outside from the inside of the ship, an operating unit installed in the fixed unit and the rotating unit to rotate the rotating unit, and a friction reduction module that reduces friction between the fixed unit and the rotating unit by utilizing magnetism when the rotating unit rotates.

[0009] The friction reduction module comprises a first magnet unit installed on the rotating unit and a second magnet unit installed on the fixed unit so as to allow a repulsive force to act with the first magnet unit.

[0010] The fixed unit has a support hole formed therein, and the rotating unit supports the viewing window and includes a rotating body installed to be movable along the circumferential direction on the inner surface of the support hole so as to be rotatable about the center of the support hole, wherein the first magnet unit is installed on the outer surface of the rotating body opposite to the inner surface of the support hole, and the second magnet unit is installed on the fixed unit opposite to the first magnet unit.

[0011] The above-described rotating unit further includes an insertion body protruding toward the fixed unit from the outer surface of the rotating body, and the fixed unit has an insertion groove formed on the inner surface of the support hole so that the insertion body can be inserted, the first magnet unit includes an insertion magnet part installed on the insertion body, and the second magnet unit has a support magnet part installed on the inner surface of the insertion groove opposite to the insertion magnet part.

[0012] The above-mentioned inlet magnet portion includes a first inlet magnet installed on at least one side of the sides of the inlet body that extend in a protruding direction relative to the rotating body, and the above-mentioned support magnet portion is installed on the inner circumference of the inlet groove opposite to the first inlet magnet and comprises a plurality of the first support magnets having the same polarity as the first inlet magnet.

[0013] The above-mentioned inlet magnet part includes a second inlet magnet installed at the end of the inlet body, and the above-mentioned support magnet part is installed on the inner circumference of the inlet groove opposite to the second inlet magnet, and is provided with the second support magnet having the same polarity as the second inlet magnet.

[0014] The first magnet unit includes a body magnet portion installed on the outer surface of the rotating body, and the second magnet unit is installed on the inner surface of the fixed unit opposite to the body magnet portion and has a protruding magnet portion having the same polarity as the body magnet portion.

[0015] The above body magnet part comprises first and second body magnets respectively installed on the outer surface of the rotating body facing each other with respect to the inlet body, and the above protruding magnet part comprises first and second protruding magnets installed on the inner surface of the fixed unit facing the first and second body magnets.

[0016] The above-mentioned rotating body includes a flange formed to protrude in a direction in which the outer diameter expands at an end corresponding to the exterior of the vessel, the first magnet unit includes a third rotor magnet installed on the side of the flange facing the fixed unit, and the second magnet unit is installed on the fixed unit facing the third rotor magnet and includes a third support magnet having the same polarity as the third rotor magnet.

[0017] The fixed unit is provided with a locking portion that is recessed to a predetermined depth from the edge toward the center on a side exposed to the outside of the vessel, and the rotating unit is installed on the flange and further comprises a rotating cover that extends in the expansion direction of the flange and is bent toward the interior of the vessel so that its end can be caught on the locking portion.

[0018] The above-mentioned locking portion has a plurality of installation grooves formed on the outer surface facing the rotating cover so that a bearing that rotatably supports the rotating cover or a packing member for maintaining watertightness between it and the rotating cover can be installed.

[0019] The shipboard rotating window device of the present invention has the advantage of being able to secure a clear view inside the ship by removing the rotation axis in the center of the viewing window, and by being equipped with a friction reduction module that reduces friction between the fixed unit and the rotating unit, thereby increasing energy efficiency and lowering the failure rate.

[0020] FIG. 1 is a perspective view of one embodiment of a rotating window device for a ship according to the present invention, and

[0021] FIG. 2 is an exploded perspective view of FIG. 1, and

[0022] FIG. 3 is a partially cutaway perspective view of FIG. 1, and

[0023] Figure 4 is a partial enlarged view of Figure 3.

[0024] Hereinafter, a rotating window device for ships according to an embodiment of the present invention will be described in detail with reference to the attached drawings. Since the present invention is susceptible to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed forms, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. Similar reference numerals have been used for similar components in the description of each drawing. With respect to the attached drawings, the dimensions of the structures are shown enlarged compared to the actual dimensions for the clarity of the present invention.

[0025] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0026] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0027] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0028] FIGS. 1 to 3 illustrate an embodiment of a rotating window device (10) for a ship according to the present invention.

[0029] The shipboard rotating window device (10) of the present invention comprises a fixed unit (100) installed in a fixed window (1) of a ship, a rotating unit (200) rotatably installed in the fixed unit (100) and including a viewing window (210) provided to allow observation of the outside from the inside of the ship, an operating unit (300) installed in the fixed unit (100) and the rotating unit (200) to rotate the rotating unit (200), and a friction reduction module (400) that reduces friction between the fixed unit (100) and the rotating unit (200) by using magnetism when the rotating unit (200) rotates.

[0030] The fixed window (1) of the above-mentioned vessel is a front and rear glass window installed to observe the outside from the inside of the vessel's wheelhouse, and the outer wall of the vessel for observing the outside of the vessel may also be applied. In addition, the through hole (2) is a circular hole that penetrates the inside and outside of the vessel in the circular fixed window (1).

[0031] The above-mentioned fixed unit (100) has a support hole (101) formed on its inner surface and includes a support body (110) installed at a position adjacent to a through hole (2) penetrating the fixed window (1), and a locking part (140) is provided on the support body (110) that is recessed to a predetermined depth from the side exposed to the outside of the vessel toward the center.

[0032] The above support body (110) comprises a first support member (120) installed on the inner side of the fixed window (1) and a second support member (130) installed on the outer side of the fixed window (1) and passing through the through hole (2) of the fixed window (1) to be coupled with the first support member (120).

[0033] The first support member (120) is an annular hollow tube installed on the inner side of the fixed window (1) adjacent to the through hole (2). At this time, the hollow of the first support member (120) is positioned opposite the center of the through hole (2). In addition, there is a first screw thread on the inner circumference of the first support member (120).

[0034] The second support member (130) penetrates the through hole (2) and is coupled with the first support member (120). The second support member (130) penetrates the through hole (2) from the outside to the inside of the fixed window (1) and is a hollow tube having a support hole (101) formed therein. The second support member (130) protrudes rearward from the outer surface of the fixed window (1), and a support protrusion is formed on the outer circumference having a second screw thread that engages with the first screw thread.

[0035] The above-mentioned locking portion (140) is formed as a cylindrical shape that is recessed to a predetermined depth toward the center from the outer surface of the second support member (130) that is exposed to the outside of the vessel. The above-mentioned locking portion (140) is provided with a plurality of installation grooves (141) so that a packing member for maintaining watertightness between the bearing that rotatably supports the rotating cover (240) and the rotating cover (240) can be installed on the outer surface facing the rotating cover (240) to be described later.

[0036] The above-mentioned installation groove (141) is recessed inward to a predetermined depth from the outer surface of the second support member (130) and extends annularly along the circumferential direction. The above-mentioned installation groove (141) may be installed in multiple spaces spaced apart from each other in the front-rear direction according to the size of the locking part (140) and the user's settings.

[0037] Since the above bearing utilizes conventional bearing technology that reduces friction at the contact portion, additional technology is omitted. In addition, the above packing member also utilizes conventional watertight technology to seal the interior and exterior.

[0038] The second support member (130) has an insertion groove (131) formed on the inner circumference of the support hole (101) so that the insertion body (230) of the rotation unit (200), which will be described later, can be inserted. The insertion groove (131) is inserted to a predetermined depth outward from the inner circumference of the second support member (130) and extends along the circumferential direction.

[0039] Also, the second support member (130) is formed by screwing together two annular members (130a 130b) as shown in the drawing.

[0040] The above-described rotating unit (200) comprises a viewing window (210) provided to allow observation of the outside from the inside of the vessel, a rotating body (220) installed to be movable along the circumferential direction on the inner surface of the support hole (101) so as to support the viewing window (210) and rotate around the center of the support hole (101), an inlet body (230) protruding toward the second support member (130) from the outer surface of the rotating body (220), and a rotating cover (240) connected to the rotating body (220) and bent toward the inside of the vessel so that its end can be caught on the catch portion (140).

[0041] The above-mentioned viewing window (210) is formed in a circular shape corresponding to the above-mentioned through hole (2), and is made of a transparent material so that the outside can be observed from the inside of the vessel.

[0042] The above-mentioned rotating body (220) is extended in the front-rear direction and is provided with a main frame (221) of a hollow tube inserted into the support hole (101), a flange (222) protruding in a direction in which the outer diameter expands at the front end of the main frame (221) corresponding to the outside of the ship, and a stepped portion (223) protruding by a predetermined thickness toward the center of the main frame (221) from the inner circumference of the main frame (221) adjacent to the viewing window (210) to support the inner surface of the viewing window (201).

[0043] The main frame (221) has an outer diameter corresponding to the inner diameter of the support hole (101). The inner diameter of the main frame (221) is formed to be larger than or equal to the outer diameter of the viewing window (210). The rear end of the main frame (221) extends through the support hole (101) to come into contact with the operating unit (300) described later.

[0044] The protruding end of the flange (222) is formed in an annular shape so as to protrude at a position facing the front of the locking part (140). At this time, it is preferable that the flange (222) be screw-coupled to the main frame (221).

[0045] The above-mentioned insertion body (230) protrudes toward the second support member (130) from the outer surface of the main frame (221). More specifically, the insertion body (230) is formed with a square cross-section and is an annular shape extending in the circumferential direction. The cross-section of the insertion body (230) may be of various conventional cross-sectional shapes capable of preventing the rotational body (220) from detaching from the support body (110).

[0046] The rotating cover (230) is connected to the flange (222) and extends in the expansion direction of the flange (222), but is bent toward the interior of the vessel so that one end can be caught on the catch portion (140). The other end of the rotating cover (230) is extended in the protruding direction of the step portion (223) and is formed to support the outer surface of the viewing window (210). At this time, the rotating cover (230) is screw-coupled to the flange (222). In addition, the rotating cover (230) is extended along the front-rear length of the outer circumference of the catch portion (140) so that the bent end contacts the front surface of the second support member (130).

[0047] The above operating unit (300) is installed in the above fixed unit (100) and rotating unit (200) to rotate the above rotating unit (100), and is equipped with a magnetic field induction part (310) and a main magnet part (320).

[0048] The magnetic field induction unit (310) is installed on the rear surface of the second support member (130) that has passed through the through hole (2) to induce a magnetic field. The magnetic field induction unit (310) includes a coil wound to induce a magnetic field and a power supply unit that supplies power to the coil. At this time, the coil is installed on the rear surface of the second support member (130) at a predetermined interval along the circumferential direction. Meanwhile, since any conventional magnetic field induction technology capable of inducing a magnetic field can be applied to the magnetic field induction unit (310), additional technology is omitted.

[0049] The main magnet part (320) is installed along the circumferential direction on the outer surface of the rotating body (220) facing the magnetic field induction part (310) so as to interfere with the magnetic field induced by the magnetic field induction part (310) and to rotate the rotating unit (200) relative to the support body (110). In the main magnet part (320), permanent magnets of mutually different polarities are alternately arranged along the circumferential direction at predetermined intervals on the outer surface of the rotating body (220).

[0050] The above operating unit (310) preferably rotates the rotation unit (100) by inducing a magnetic field, but is not limited to this and any conventional rotation technology can be applied.

[0051] The friction reduction module (400) reduces friction between the fixed unit (100) and the rotating unit (200) by utilizing magnetism when the rotating unit (200) rotates, and comprises a first magnet unit (500) installed on the rotating unit (200) and a second magnet unit (600) installed on the fixed unit (200) so that a repulsive force can act with the first magnet unit (500).

[0052] The first magnet unit (500) is installed on the outer surface of the rotating body (220) facing the inner surface of the support hole (101), and is equipped with an inlet magnet part (510), a body magnet part (520), and a third rotating magnet (530).

[0053] The above-mentioned inlet magnet part (510) is installed on the inlet body (230) and comprises a first inlet magnet (511) installed on at least one side of the inlet body (230) that extends in a protruding direction relative to the rotating body (220), and a second inlet magnet (512) installed at the end of the inlet body (230).

[0054] The first inlet magnet (511) comprises a first-1 inlet magnet (511a) installed on the side of the inlet body (230) corresponding to the inner side of the vessel, and a first-2 inlet magnet (511b) installed on the side of the inlet body (230) corresponding to the outer side of the vessel. As shown in the drawing, it is preferable that the first inlet magnet (511) be a plurality of permanent magnets arranged at a predetermined distance from each other along the circumferential direction, but annular permanent magnets may also be applied.

[0055] The second inlet magnet (512) is installed at the end of the inlet body (230) in a direction intersecting the first inlet magnet (511). It is preferable that the second inlet magnet (512) be a plurality of permanent magnets spaced apart from each other at a predetermined distance along the circumferential direction, but an annular permanent magnet may also be used.

[0056] The above body magnet part (520) is installed on the outer surface of the rotating body (220) and is equipped with first and second body magnets (521, 522) respectively installed on the outer surface of the rotating body (220) facing each other with respect to the inlet body (230).

[0057] More specifically, the first body magnet (511) is installed on the outer surface of the rotating body (230) adjacent to the first-1 inlet magnet (511a), and the second body magnet (512) is installed on the outer surface of the rotating body (230) adjacent to the first-2 inlet magnet (511b). It is preferable that the first and second body magnets (521, 522) each be a plurality of permanent magnets arranged at a predetermined distance from each other along the circumferential direction, but annular permanent magnets may also be applied to each.

[0058] The third rotor magnet (530) is installed on the side of the flange (222) facing the support body (110). Preferably, the third rotor magnet (530) is formed by a plurality of permanent magnets spaced apart from each other along the circumferential direction, but an annular permanent magnet may also be used.

[0059] The second magnet unit (600) is installed on the fixed unit (100) opposite to the first magnet unit (500) and is equipped with a support magnet part (610), a protruding magnet part (620), and a third support magnet (630).

[0060] The above support magnet part (610) is installed on the inner surface of the inlet groove (131) facing the inlet magnet part (510), and is installed on the inner surface of the inlet groove (131) facing the first inlet magnet (511), and is provided with a plurality of the first support magnets (611) having the same polarity as the first inlet magnet (511), and is installed on the inner surface of the inlet groove (131) facing the second inlet magnet (512), and is provided with the second support magnet (612) having the same polarity as the second inlet magnet (512).

[0061] The first support magnet (611) comprises a first support magnet (611a) installed on the inner circumference of the inlet groove (131) opposite to the first-1 inlet magnet (511a), and a first-2 support magnet (611b) installed on the inner circumference of the inlet groove (131) opposite to the first-1 inlet magnet (512a). As shown in the drawing, it is preferable that the first support magnet (611) be a plurality of permanent magnets arranged at a mutually predetermined interval along the circumferential direction, but an annular permanent magnet may also be applied.

[0062] The second support magnet (612) is installed on the inner circumference of the inlet groove (131) opposite to the second inlet magnet (512) in a direction intersecting the first support magnet (611). It is preferable that the second support magnet (612) be a plurality of permanent magnets arranged at a predetermined distance from each other along the circumferential direction, but an annular permanent magnet may also be applied.

[0063] The above protruding magnet part (620) is installed on the inner circumference of the support body (110) opposite to the body magnet part (520), and is provided with first and second protruding magnets (621, 622) having the same polarity as the body magnet part (520).

[0064] More specifically, the first protruding magnet (621) is installed on the inner circumference of the support body (110) opposite to the first body magnet (521), and the second protruding magnet (622) is installed on the inner circumference of the support body (110) opposite to the second body magnet (522). It is preferable that the first and second protruding magnets (621, 622) each be a plurality of permanent magnets arranged at a predetermined distance from each other along the circumferential direction, but annular permanent magnets may also be applied to each.

[0065] The third support magnet (630) is installed on the fixed unit facing the third rotor magnet (530) and has the same polarity as the third rotor magnet (530). It is preferable that the third support magnet (630) be a plurality of permanent magnets arranged at a predetermined distance from each other along the circumferential direction, but an annular permanent magnet may also be used.

[0066] The rotating window (10) for a ship according to the present invention described above is equipped with a first magnet unit (500) installed on the rotating unit (200) and a second magnet unit (600) installed on the fixed unit (100) so that a repulsive force can be operated with the first magnet unit (500), thereby having the advantage of being able to reduce friction with the fixed unit (100) when the rotating unit (200) rotates.

[0067] The description of the presented embodiments is provided to enable any person skilled in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not limited to the embodiments presented herein, but should be interpreted in the broadest possible scope consistent with the principles and novel features presented herein.

Claims

1. A fixed unit installed in a fixed window of a ship; A rotating unit rotatably installed on the fixed unit and comprising a viewing window configured to allow observation of the outside from the inside of the vessel; An operating unit installed in the above fixed unit and rotating unit to rotate the above rotating unit; and When the above rotating unit rotates, it uses magnetism to [between] the fixed unit and the rotating unit Characterized by having a friction reduction module that reduces friction. Rotating window device for ships.

2. In Claim 1, The above friction reduction module is A first magnet unit installed in the above-mentioned rotating unit and A first magnet unit and a fixed unit installed so that a repulsive force can act upon each other Characterized by having 2 magnet units Rotating window device for ships.

3. In Claim 2, The above-mentioned fixed unit has a support hole formed therein, and The above-mentioned rotating unit supports the above-mentioned viewing window and includes a rotating body installed to be movable along the circumferential direction on the inner surface of the support hole so as to be able to rotate about the center of the support hole; The first magnet unit is installed on the outer surface of the rotating body opposite to the inner surface of the support hole, and The second magnet unit is installed on the fixed unit facing the first magnet unit. Characterized by Rotating window device for ships.

4. In Claim 3, The above-described rotating unit further includes an inlet body protruding toward the fixed unit from the outer surface of the rotating body, and The above-mentioned fixed unit has an insertion groove formed on the inner circumference of the support hole so that the insertion body can be inserted, and The first magnet unit above includes an inlet magnet part installed in the inlet body, and The second magnet unit is characterized by having a support magnet part installed on the inner circumference of the inlet groove opposite to the inlet magnet part. Rotating window device for ships.

5. In Claim 4, The above-mentioned inlet magnet portion includes a first inlet magnet installed on at least one side of the sides of the inlet body that extend in a protruding direction relative to the rotating body; The above-described support magnet portion is installed on the inner circumference of the inlet groove opposite to the first inlet magnet, and is characterized by comprising a plurality of first support magnets each having the same polarity as the first inlet magnet. Rotating window device for ships.

6. In Claim 4, The above-mentioned inlet magnet part includes a second inlet magnet installed at the end of the inlet body; and The above-mentioned support magnet portion is installed on the inner circumference of the inlet groove opposite to the second inlet magnet, and is characterized by having a second support magnet having the same polarity as the second inlet magnet. Rotating window device for ships.

7. In Claim 4, The first magnet unit above includes a body magnet part installed on the outer surface of the rotating body; and The second magnet unit is installed on the inner circumference of the fixed unit opposite to the body magnet part, and is characterized by having a protruding magnet part having the same polarity as the body magnet part. Rotating window device for ships.

8. In Claim 7, The above body magnet portion comprises first and second body magnets respectively installed on the outer surface of the rotating body facing each other with respect to the inlet body; and The above protruding magnet portion is characterized by having first and second protruding magnets installed on the inner circumference of the fixed unit opposite to the first and second body magnets. Rotating window device for ships.

9. In Claim 4, The above-mentioned rotating body includes a flange formed to protrude in a direction in which the outer diameter expands at an end corresponding to the outside of the vessel; The first magnet unit includes a third rotor magnet installed on the side of the flange facing the fixed unit; The second magnet unit is installed on the fixed unit opposite to the third rotor magnet and is characterized by having a third support magnet having the same polarity as the third rotor magnet. Rotating window device for ships.

10. In Claim 9, The above-mentioned fixed unit is provided with a locking portion that is recessed to a predetermined depth from the edge toward the center on the side exposed to the outside of the vessel; The above-mentioned rotating unit is installed on the flange and further comprises a rotating cover that extends in the expansion direction of the flange and is bent toward the interior of the vessel so that its end can be caught on the catch portion. Rotating window device for ships.

11. In Claim 10, The above-mentioned locking portion is characterized by having a plurality of installation grooves formed on the outer surface facing the rotating cover so that a bearing that rotatably supports the rotating cover or a packing member for maintaining watertightness between it and the rotating cover can be installed. Rotating window device for ships.

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