Patent Description:
Unexamined <CIT> discloses a camera having a sliding-type of lens protective cover. The camera includes a cover part provided on a front surface of the camera and manually movable, and a lens part (object) to be shielded by the slid cover. This allows a user to open and close the cover to protect the lens part (object). The document <CIT> discloses in an example, a view shutter that may include a slider to move along a bezel of an electronic device. The slider may move along the bezel between an open position and a closed position. An example view shutter may also include a camera aperture disposed on the slider. The camera aperture may be aligned with a camera disposed behind the slider if the slider is in the open position, and the slider may obstruct a view of such a camera if the slider is in the closed position. Additionally, an example view shutter may also include a slider magnet disposed on the slider, a first holding magnet coupled to the bezel, and a second holding magnet coupled to the bezel. The document <CIT> discloses an image pickup device that is connected with a computer. A video program is installed in the computer. The image pickup device includes an image pickup module and a monitor program. The image pickup module is controlled by the video program to capture an image. The image pickup module includes a lens and a shielding cover in front of the lens. When the monitor program detects an execution status of the video program, the shielding cover is driven to move to a position where the lens is not shielded by the shielding cover. When the monitor program detects a non-execution status of the video program, the shielding cover is driven to move to a position where the lens is shielded by the shielding cover. The document <CIT> discloses a lens protecting apparatus for a cellular phone camera. The lens protecting apparatus of the present invention includes a base, which has an opening, through which a lens of the camera is exposed, a coil, which is mounted to the base and is supplied with current, a lens cover, which is rotatably mounted to the base to open or close the opening, and a magnet, which is mounted to the lens cover to form a magnetic field around the coil. The magnet is moved by force generated by the current and the magnetic field, and the lens cover opens or closes the opening using the magnet, to thus move it.

The present disclosure provides a cover opening and closing device in which a cover can be opened and closed without being directly touched.

A cover opening and closing device according to one aspect of the present disclosure is a cover opening and closing device according to claim <NUM>.

A cover opening and closing device according to another aspect of the present disclosure is a cover opening and closing device according to claim <NUM>.

According to the present disclosure, the cover can be opened and closed without being directly touched.

Exemplary embodiments will be described below in detail with reference to the drawings as appropriate. However, descriptions more detailed than necessary may be omitted. For example, detailed descriptions of already well-known matters, and duplicated descriptions of substantially identical configurations may be omitted. These omissions are intended to avoid excessive redundancy in the following description, and to facilitate understanding of those skilled in the art. Note that the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter recited in the appended claims.

Moreover, in the following exemplary embodiments, a description will be given of an example in which a cover opening and closing device is mounted on a monitor (which is an example of a display apparatus) to be attached to a passenger seat of an aircraft. However, the present disclosure is not limited to this example.

A first exemplary embodiment will be described below with reference to <FIG>.

<FIG> is an external view of a monitor having a cover opening and closing device built therein according to the first exemplary embodiment. Monitor <NUM> includes frame 11a that is an outer portion of monitor <NUM> and display 11b that is a portion where an image is displayed. Frame 11a is an example of a housing of the cover opening and closing device and thus an example of a housing of monitor <NUM>. Frame 11a includes transmission part <NUM>. Frame 11a includes a camera mounted therein. The camera can capture an image through transmission part <NUM>.

Frame 11a is made of a material, such as resin, aluminum, or glass, which does not have a magnetic force by itself and can transmit a magnetic force.

Transmission part <NUM> is a transparent circular member. For example, transmission part <NUM> is made of transparent resin or transparent glass. Note that in the present exemplary embodiment, transmission part <NUM> is a transparent member and is formed integrally with frame 11a. Frame 11a is a portion that is subjected to decoration, such as coating, which does not allow light to pass therethrough. Transmission part <NUM> is a portion that is not subjected to decoration, that is, a transparent portion.

<FIG> is a cross-sectional view of an area around the camera and the cover opening and closing device according to the first exemplary embodiment. Frame 11a includes camera <NUM> that is an example of an object. The cover opening and closing device according to the present exemplary embodiment includes guide <NUM> disposed between frame 11a and camera <NUM> and fixed to frame 11a, and cover <NUM> movable within guide <NUM>. That is, guide <NUM> accommodates cover <NUM>. More specifically, cover <NUM> is accommodated in a space between guide <NUM> and frame 11a.

Guide <NUM> has opening <NUM>, through which camera <NUM> can capture an image, at a position between camera <NUM> and transmission part <NUM>. In addition, in order not to affect an operation of cover <NUM>, guide <NUM> is made of a material, such as resin, which does not have a magnetic force by itself and can transmit a magnetic force. Cover <NUM> can move, along guide <NUM>, between a first position where cover <NUM> overlaps camera <NUM> and shields camera <NUM> as illustrated in <FIG> and a second position where cover <NUM> does not shield camera <NUM> as illustrated in <FIG>. <FIG> and <FIG> will be described later. Guide <NUM> has a lateral dimension more than twice a lateral dimension of cover <NUM> such that cover <NUM> moved to the second position does not shield camera <NUM>. A lateral direction of guide <NUM> corresponds to a longitudinal direction of guide <NUM>, for example. A lateral direction of cover <NUM> corresponds to a longitudinal direction of cover <NUM>, for example. In the first exemplary embodiment, guide <NUM> has a rectangular cross section, with its long side directed laterally, between transmission part <NUM> and opening <NUM>.

Opening <NUM> is disposed on an optical axis of camera <NUM> and has a dimension such that a field of view of camera <NUM> is not shielded. For example, opening <NUM> is formed by hollowing out a portion of guide <NUM>, or is embedded with transparent resin or transparent glass that allows light to pass through. In the first exemplary embodiment, opening <NUM> is formed by hollowing out guide <NUM> into a cylindrical shape so as to have a diameter the same as that of transmission part <NUM>.

Cover <NUM> is a member including a magnetically attractive material or a magnetically repulsive material. Examples of the magnetically attractive material include an iron-based material and a heteropolar magnet. An example of the magnetically repulsive material includes a homopolar magnet. In this case, one surface of each of magnet <NUM> and cover <NUM> is a monopolar magnet. For attraction, cover <NUM> is disposed with its pole different from that of magnet <NUM> being directed to a surface of frame 11a. For repulsion, cover <NUM> is disposed with its pole the same as that of magnet <NUM> being directed to the surface of frame 11a. Cover <NUM> has a thickness less than a depthwise dimension of guide <NUM>. A depth direction of guide <NUM> corresponds to a normal direction of frame 11a or a normal direction of a display surface of display 11b. Cover <NUM> has a heightwise dimension and a lateral dimension that are less than a heightwise dimension of guide <NUM>, but are equal to or greater than a heightwise dimension of transmission part <NUM>. A height direction of cover <NUM> corresponds to a height direction of monitor <NUM>. The lateral direction of cover <NUM> corresponds to a lateral direction of monitor <NUM>, for example, a longitudinal direction of monitor <NUM>. In the first exemplary embodiment, cover <NUM> has a cylindrical shape having a diameter greater than that of transmission part <NUM>. Under no magnetic force applied to cover <NUM>, cover <NUM> is in contact, on its lower surface, with guide <NUM> by its own weight. At this time, cover <NUM> is in contact, at a certain point, side, or surface somewhere, with guide <NUM> or frame 11a, due to a gravitational force applied to cover <NUM> or inclination of cover <NUM>, in a depth direction or in the lateral direction of cover <NUM> (for example, the longitudinal direction of cover <NUM>).

Next, a moving position of cover <NUM> will be described with reference to <FIG> and <FIG>. <FIG> is an explanatory enlarged view of an area around the cover opening and closing device with the camera being shielded by the cover according to the first exemplary embodiment. <FIG> is an explanatory enlarged view of the area around the cover opening and closing device with the camera not being shielded by the cover according to the first exemplary embodiment.

As illustrated in <FIG>, cover <NUM> shielding camera <NUM> and transmission part <NUM> are set in the same position. As illustrated in <FIG>, when cover <NUM> is positioned so as to shield camera <NUM>, camera <NUM> cannot capture an image of a subject at a position facing monitor <NUM>.

On the other hand, as illustrated in <FIG>, when cover <NUM> is positioned so as not to shield camera <NUM>, camera <NUM> can capture, through opening <NUM> and transmission part <NUM>, an image of the subject at the position facing monitor <NUM>.

An operation of the cover opening and closing device configured as described above will be described with reference to <FIG> and <FIG>. <FIG> is an explanatory cross-sectional view of the area around the cover opening and closing device with the cover attracted to the magnet being moved to the position where the cover shields the camera in the first exemplary embodiment. <FIG> is an explanatory cross-sectional view of the area around the cover opening and closing device with the cover being moved by the magnet to the position where the cover does not shield the camera in the first exemplary embodiment.

Cover <NUM> includes a magnetically attractive material. When magnet <NUM> is brought close to the surface of frame 11a, cover <NUM> is attracted to the magnet and brought close to frame 11a. In this state, magnet <NUM> is moved in the lateral direction, and thereby, cover <NUM> can be moved under an attractive force of magnet <NUM> to the second position where cover <NUM> does not shield camera <NUM> as illustrated in <FIG>. Here, when magnet <NUM> is brought away from the surface of frame 11a, in a case where the lower surface of cover <NUM> is in contact with guide <NUM>, cover <NUM> rests on guide <NUM>, and in a case where cover <NUM> is floating from guide <NUM>, cover <NUM> drops onto and rests on guide <NUM>. When cover <NUM> at the second position where cover <NUM> does not shield camera <NUM> as illustrated in <FIG> is to be moved to the first position where cover <NUM> shields camera <NUM> as illustrated in <FIG>, magnet <NUM> needs only to be brought close to the surface of frame 11a and oppositely moved from the second position.

In a case where cover <NUM> includes a magnetically repulsive material, when magnet <NUM> is brought close to the surface of frame 11a, cover <NUM> repels the magnet and moves away from frame 11a. In this state, magnet <NUM> is positionally moved in the lateral direction (for example, the longitudinal direction of cover <NUM>), and thereby, cover <NUM> can be moved under a repulsive force of magnet <NUM> to the second position where cover <NUM> does not shield camera <NUM> as illustrated in <FIG>. Here, when magnet <NUM> is brought away from the surface of frame 11a, in the case where the lower surface of cover <NUM> is in contact with guide <NUM>, cover <NUM> rests on guide <NUM>, and in the case where cover <NUM> is floating from guide <NUM>, cover <NUM> drops onto and rests on guide <NUM>. When cover <NUM> at the second position where cover <NUM> does not shield camera <NUM> is to be moved to the first position where cover <NUM> shields camera <NUM>, as in the case where cover <NUM> is attracted to magnet <NUM>, magnet <NUM> needs only to be brought close to the surface of frame 11a and moved. As described above, guide <NUM> is configured to allow magnet <NUM> to move cover <NUM> between the first position where cover <NUM> shields camera <NUM> and the second position where cover <NUM> does not shield camera <NUM>.

As described above, in the present exemplary embodiment, monitor <NUM> includes camera <NUM> and cover <NUM> that is magnetically movable.

This prevents cover <NUM> from being directly touched from the outside of monitor <NUM>. Thus, for example, an airline that provides monitor <NUM> can prevent, for example, a passenger using monitor <NUM> from moving the position of cover <NUM>. Furthermore, when the cover needs to be opened and closed, cover <NUM> can be moved from the outside of monitor <NUM> by using a magnet.

A second exemplary embodiment will be described below with reference to <FIG> and <FIG>.

<FIG> is an explanatory enlarged view of an area around a cover opening and closing device with an object being shielded by a cover according to the second exemplary embodiment. <FIG> is an explanatory enlarged view of the area around the cover opening and closing device with the object not being shielded by the cover according to the second exemplary embodiment. Guide <NUM> is basically the same as guide <NUM> according to the first exemplary embodiment in terms of a material and a relationship between the guide and each of transmission part <NUM> and opening <NUM>. However, guide <NUM> has a third position between the first position where cover <NUM> shields camera <NUM> and the second position where cover <NUM> does not shield camera <NUM>, the third position being a position where guide <NUM> has, on its lower side, a freely selected portion raised like protrusion <NUM> in a direction opposite to a direction of gravitational force applied to monitor <NUM>. That is, protrusion <NUM> protrudes in vertical direction D1 (see <FIG>). Protrusion <NUM> can prevent cover <NUM> under no magnetic force applied thereto from moving between the first position where cover <NUM> shields camera <NUM> and the second position where cover <NUM> does not shield camera <NUM>. Cover <NUM> is movable along guide <NUM>.

An operation of the cover opening and closing device configured as described above will be described below. Since the freely selected portion on the lower side of guide <NUM> is raised like protrusion <NUM> in the direction opposite to the direction of gravitational force applied to monitor <NUM>, cover <NUM> is guided by its own weight to either the first position where cover <NUM> shields camera <NUM> as illustrated in <FIG> or the second position where cover <NUM> does not shield camera <NUM> as illustrated in <FIG>, without stopping at any position, such as the third position, between the first position and the second position. In order to move cover <NUM> between the first position and the second position, similarly to the first exemplary embodiment, magnet <NUM> is brought close to the surface of frame 11a to cause cover <NUM> to attract or repel and to be moved.

As described above, in the present exemplary embodiment, with provision of protrusion <NUM> in guide <NUM>, cover <NUM> spontaneously moves by its own weight to either the first position where cover <NUM> shields camera <NUM> or the second position where cover <NUM> does not shield camera <NUM>. As long as cover <NUM> is not moved by using magnet <NUM>, it is possible to reduce an unintended positional change of cover <NUM>, which is caused by vibrations or the like, between the first position where cover <NUM> shields camera <NUM> and the second position where cover <NUM> does not shield camera <NUM>.

This makes it possible to reduce the movement of cover <NUM> beyond the third position, for example, even when cover <NUM> undergoes vibrations transmitted from an aircraft, and involves changes in the direction of gravitational force due to a tilt of the aircraft.

A third exemplary embodiment will be described below with reference to <FIG>.

<FIG> is an explanatory cross-sectional view of an area around a cover opening and closing device with a cover having elastic forces acting in both directions (two-way directions) of a depth according to the third exemplary embodiment. Cover <NUM> has a depthwise natural length greater than a width of guide <NUM>. Cover <NUM> under no magnetic force applied thereto has repulsive elastic forces acting in both direction a and direction b. For example, cover <NUM> integrally includes a plurality of different components as a configuration in which a magnetically attractive portion or a magnetically repulsive portion containing iron powder or the like is provided at a periphery (edge) of an elastically deformable portion made of rubber or resin. Alternatively, for example, cover <NUM> includes one component such as an elastic body including rubber or resin blended with iron powder. Then, cover <NUM> is deformed when being attracted to or repelled by a magnetic force. The heightwise dimension and the lateral dimension of cover <NUM> are less than the heightwise dimension of guide <NUM>, but are equal to or greater than the dimension of transmission part <NUM>. In the third exemplary embodiment, cover <NUM> has a cylindrical shape having a diameter greater than that of transmission part <NUM>. Cover <NUM> is movable along guide <NUM>.

An operation of the cover opening and closing device configured as described above will be described with reference to <FIG>. <FIG> is an explanatory cross-sectional view of the area around the cover opening and closing device with the cover being attracted to a magnet and one of the elastic forces being reduced in the third exemplary embodiment. <FIG> is an explanatory cross-sectional view of the area around the cover opening and closing device with the cover repelling the magnet and one of the elastic forces being reduced in the third exemplary embodiment. As illustrated in <FIG>, cover <NUM> under no magnetic force thereto is fixed by repulsive forces acting in both direction a and direction b of the depth and frictional forces acting on both surfaces of cover <NUM>. As illustrated in <FIG>, when cover <NUM> is attracted to magnet <NUM>, cover <NUM> is deformed in direction a and the repulsive force acting in direction b is reduced. Thus, cover <NUM> is no longer fixed. On the other hand, as illustrated in <FIG>, when cover <NUM> is repelled by magnet <NUM>, cover <NUM> is deformed in direction b and the repulsive force acting in direction a is reduced. Thus, cover <NUM> is no longer fixed. With one repulsive force being reduced as illustrated in <FIG>, cover <NUM> can be moved together with lateral movement of magnet <NUM>. Then, when magnet <NUM> is brought away from the surface of frame 11a, the deformation of cover <NUM> is restored, and the repulsive forces act on both direction a and direction b again, resulting in fixing of cover <NUM>.

As described above, in the present exemplary embodiment, cover <NUM> is positionally fixed by the repulsive forces in the depth direction, and restrained from being positionally changed as long as cover <NUM> is not moved by using magnet <NUM>.

This makes it possible to restrain the movement of cover <NUM>, for example, even when cover <NUM> undergoes vibrations transmitted from an aircraft, and involves changes in the direction of gravitational force due to a tilt of the aircraft.

A fourth exemplary embodiment will be described below with reference to <FIG>.

<FIG> is an explanatory cross-sectional view of an area around a cover opening and closing device with an object being shielded by a cover in the fourth exemplary embodiment. Guide <NUM> is basically the same as guide <NUM> according to the first exemplary embodiment in terms of a material and a relationship between the guide and each of transmission part <NUM> and opening <NUM>. However, guide <NUM> has a third position, at which guide <NUM> has narrowed width La in a depth of a freely selected portion, between a first position where cover <NUM> shields camera <NUM> and a second position where cover <NUM> does not shield camera <NUM>. At the third position, guide <NUM> has portions protruding from both sides thereof in the depth direction and thereby has the narrowed width.

For example, cover <NUM> integrally includes a plurality of different components as a configuration in which a magnetically attractive portion or a magnetically repulsive portion containing iron powder or the like is provided at a periphery (edge) of an elastically deformable portion made of rubber or resin. Alternatively, for example, cover <NUM> includes one component such as an elastic body including rubber or resin blended with iron powder. Cover <NUM> under no magnetic force applied thereto has a natural length having width L1 greater than width La at the third position of guide <NUM>. However, when cover <NUM> is deformed by a magnetic force as illustrated in <FIG> to be described later, cover <NUM> has a length having width L2 less than width La at the third position of guide <NUM>. Cover <NUM> having a thickness across width L1 cannot pass through the third position of guide <NUM> because width L1 is greater than width La. Cover <NUM> deformed to a shape having width L2 can pass through the third position because width L2 is less than width La. The heightwise dimension and the lateral dimension of cover <NUM> are less than the heightwise dimension of guide <NUM>, but are equal to or greater than the dimension of transmission part <NUM>. In the fourth exemplary embodiment, cover <NUM> has a cylindrical shape having a diameter greater than that of transmission part <NUM>. Cover <NUM> is movable along guide <NUM>. As described above, guide <NUM> has a clearance at the third position. The clearance has a predetermined length (width La) in depth direction D2 (see <FIG>) of frame 11a.

An operation of the cover opening and closing device configured as described above will be described with reference to <FIG> is an explanatory cross-sectional view of the area around the cover opening and closing device with the cover being magnetically deformed and passing through the narrowed position in the fourth exemplary embodiment. When cover <NUM> is at the first position where cover <NUM> shields camera <NUM> as illustrated in <FIG>, cover <NUM> under no magnetic force applied thereto is not subjected to a force by which cover <NUM> is fixed. Therefore, when cover <NUM> undergoes vibrations transmitted from an aircraft, and involves changes in the direction of gravitational force due to a tilt of the aircraft, cover <NUM> freely moves. However, since width L1 of cover <NUM> is greater than width La at the third position of guide <NUM>, cover <NUM> does not move to the second position beyond the third position. The same holds true for the case of cover <NUM> being at the second position, and cover <NUM> does not move to the first position from the second position beyond the third position.

However, as illustrated in <FIG>, when magnet <NUM> applies a magnetic force to cover <NUM>, cover <NUM> is deformed by an attractive force or a repulsive force to a shape having width L2 less than width La of the narrowed portion of guide <NUM>. At this time, cover <NUM> passes through the third position of guide <NUM> to be switched between the first position where cover <NUM> shields camera <NUM> and the second position where cover <NUM> does not shield camera <NUM>.

As described above, in the present exemplary embodiment, since depthwise thickness L1 of cover <NUM> is greater than width La of the narrowed portion of guide <NUM>, cover <NUM> can be restrained from being positionally changed beyond the third position as long as cover <NUM> is not moved by using magnet <NUM>.

This makes it possible to restrain the movement of cover <NUM> between the first position and the second position beyond the third position, for example, even when cover <NUM> undergoes vibrations transmitted from an aircraft, and involves changes in the direction of gravitational force due to a tilt of the aircraft.

The first to fourth exemplary embodiments have been described above as examples of the techniques disclosed in the present application. However, the techniques of the present disclosure are not limited to the first to fourth exemplary embodiments, and can also be applied to exemplary embodiments in which modifications, replacements, additions, omissions, and the like are made. In addition, new exemplary embodiments can be made by combining the constituent elements described in the first to fourth exemplary embodiments. In particular, the second exemplary embodiment may be combined with the third exemplary embodiment and the fourth exemplary embodiment.

Other exemplary embodiments will be described below as an example.

Although the shapes of transmission part <NUM>, guide <NUM>, opening <NUM>, and cover <NUM> are defined in the first exemplary embodiment, each shape is an example. As long as the similar effect can be obtained, these components may have, for example, a shape having an uneven height and an uneven thickness, and a shape having a combination of curved surface shapes.

In the third exemplary embodiment described above, cover <NUM> has the repulsive forces in the depth direction. However, the shape is an example. The direction in which the repulsive forces act may be, for example, the height direction instead of the depth direction of guide <NUM>. For example, an elastic body has, for example in its height direction, an upper portion including a magnetically attractive material or a magnetically repulsive material, and is attracted to or repelled by magnet <NUM> and then moved in the height direction. This causes heightwise deformation of cover <NUM>, and allows cover <NUM> to be positionally moved by being moved in the lateral direction while keeping the deformed state. When the magnet is brought away from cover <NUM> after the movement of cover <NUM>, the heightwise deformation of cover <NUM> is restored, and the elastic forces act in both directions of a height. Thus, the movement of cover <NUM> can be restrained.

In the fourth exemplary embodiment described above, guide <NUM> has portions protruding from both sides thereof in the depth direction and thereby has thickness La. However, guide <NUM> has only to have thickness La less than thickness L1 of cover <NUM> in a freely selected portion. Therefore, only one of surfaces of guide <NUM> in the depth direction may have a protruding portion, and the other may be flat.

In the fourth exemplary embodiment described above, guide <NUM> has the narrowed width in the depth of the freely selected portion. However, the shape is an example. Guide <NUM> may have the narrowed width, for example, in the height direction instead of the depth direction. For example, an elastic body has, for example in its height direction, an upper portion including a magnetically attractive material or a magnetically repulsive material, and is attracted to or repelled by magnet <NUM> and then moved in the height direction. This causes heightwise deformation of cover <NUM>, and allows cover <NUM> to be positionally moved by being moved in the lateral direction while keeping the deformed state. When the magnet is brought away from cover <NUM> after the movement of cover <NUM>, the heightwise deformation of cover <NUM> is restored, and the height of cover <NUM> becomes greater than the height of cover <NUM> at the third position. Thus, cover <NUM> can be restrained from being positionally changed beyond the third position.

In the first to fourth exemplary embodiments described above as an example, monitor <NUM> includes transmission part <NUM>. However, transmission part <NUM> may be an opening provided in monitor <NUM>.

In the first to fourth exemplary embodiments, transmission part <NUM> is made of a transparent material. However, transmission part <NUM> may be made of an opaque material as long as the camera is operable.

In the first to fourth exemplary embodiments, camera <NUM> is positioned at frame 11a of monitor <NUM>. However, camera <NUM> may be disposed in display 11b.

In the first to fourth exemplary embodiments, frame 11a and the guide are made of resin having no magnetic force. However, frame 11a and the guide may each have a magnetic force as long as their magnetic forces are weaker than the magnetic force of magnet <NUM> for operating the cover from the outside of frame 11a and the cover can be operated.

In the first to fourth exemplary embodiments, the moving direction of the cover is the lateral direction. However, the moving direction of the cover may be a direction different from the lateral direction, such as an oblique direction, a lengthwise direction, and a circumferential direction.

In the first to fourth exemplary embodiments described above, camera <NUM> is built in monitor <NUM>. However, camera <NUM> may be provided in the outside of monitor <NUM> so as to operate as a module of the camera by itself rather than being built in monitor <NUM>.

In the first to fourth exemplary embodiments described above, the object is camera <NUM>. However, the object may be any object that needs to be switched between an open state and a closed state. For example, the object may be a sensor configured to detect a state in front of monitor <NUM>, for example, brightness, a distance from the sensor to a close object, a temperature, or the like. For example, the object may be a light source itself or illumination that propagates light from a distant place by refraction or reflection. In addition, the surface of the object and the portion of opening <NUM> of guide <NUM> may be decorated with a design or coloring.

In the first to fourth exemplary embodiments, the monitor to be attached to the passenger seat of the aircraft has been described as an example. However, the passenger seat of the aircraft is an example as an attachment destination. The monitor may be attached, for example, to a wall and a ceiling other than the passenger seat. In addition, although an aircraft has been described as an example, another movable body may be possible. For example, the movable body may be a flying body other than an aircraft, a traveling vehicle, and a movable body that can be carried by a user.

Note that, the above exemplary embodiments are to exemplify the techniques in the present disclosure, and therefore, various modifications, replacements, additions, omissions, and the like can be made in the scope of the appended claims.

Claim 1:
A cover opening and closing device for shielding an object (<NUM>), the cover opening and closing device comprising:
a cover (<NUM>, <NUM>, <NUM>) attractable to or repellable by a magnet (<NUM>);
a guide (<NUM>, <NUM>) accommodating the cover (<NUM>, <NUM>, <NUM>); and
a housing (11a), covering the guide (<NUM>, <NUM>),
wherein
the cover (<NUM>, <NUM>, <NUM>) is accommodated in a space between the guide (<NUM>, <NUM>) and the housing (11a),
the guide (<NUM>, <NUM>) allows the cover (<NUM>, <NUM>, <NUM>) to be moved, by the magnet (<NUM>) outside the space, between a first position where the cover shields the object (<NUM>) and a second position where the cover (<NUM>, <NUM>, <NUM>) does not shield the object (<NUM>), and
characterized in that
the guide (<NUM>) includes a protrusion (<NUM>) between the first position and the second position, and
the protrusion (<NUM>) protrudes in a direction of gravitational force when the guide is arranged in a horizontal orientation.