Patent ID: 12216506

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Description will now be given in detail according to exemplary embodiments disclosed herein, with reference to the accompanying drawings. For the sake of brief description with reference to the drawings, the same or equivalent components may be denoted by the same reference numbers, and description thereof will not be repeated.

In general, suffixes such as “module” and “unit” may be used to refer to elements or components. Use of such suffixes herein is merely intended to facilitate description of the specification, and the suffixes do not have any special meaning or function.

In the present disclosure, that which is well known to one of ordinary skill in the relevant art has generally been omitted for the sake of brevity. The accompanying drawings are used to assist in easy understanding of various technical features and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. As such, the present disclosure should be construed to extend to any alterations, equivalents and substitutes in addition to those which are particularly set out in the accompanying drawings.

It will be understood that although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

It will be understood that when an element is referred to as being “connected with” another element, there may be intervening elements present. In contrast, it will be understood that when an element is referred to as being “directly connected with” another element, there are no intervening elements present.

A singular representation may include a plural representation unless context clearly indicates otherwise.

In the present application, it should be understood that the terms “comprises, includes,” “has,” etc. specify the presence of features, numbers, steps, operations, elements, components, or combinations thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and rear (R) shown in the drawings are only for convenience of description, and the technical concept disclosed in the present specification is not limited thereto.

Referring toFIG.1, a display device1may include a head10. The head10can display an image. The head10may be referred to as a display10or a display unit10.

The head10may include a first long side LS1, a second long side LS2opposite to the first long side LS1, a first short side SS1adjacent to the first long side LS1and the second long side LS2, and a second short side SS2opposite to the first short side SS1. Meanwhile, for convenience of explanation, it is illustrated and described that the lengths of the first and second long sides LS1and LS2are longer than the lengths of the first and second short sides SS1and SS2, but a case in which the lengths of the first and second long sides LS1and LS2are approximately equal to the lengths of the first and second short sides SS1and SS2may be possible.

A direction parallel to the short sides SS1and SS2of the head10may be referred to as a first direction DR1or an up-down direction. A direction parallel to the long sides LS1, LS2, and long Side of the head10may be referred to as a second direction DR2or a left-right direction. A direction perpendicular to the long sides LS1and LS2and the short sides SS1and SS2of the head10may be referred to as a third direction DR3or a front-rear direction.

A direction in which the head10displays an image may be referred to as a front direction (F, z), and a direction opposite to this may be referred to as a rear direction R. The side of the first short side SS1may be referred to as a left side (Le, x). The side of the second short side SS2may be referred to as a right side Ri. The side of the first long side LS1may be referred to as an upper side (U, y). The side of the second long side LS2may be referred to as a lower side D.

The first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2may be referred to as an edge of the head10. In addition, a point where the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2meet each other may be referred to as a corner.

A point where the first short side SS1and the first long side LS1meet may be a first corner C1. A point where the first short side SS1and the second long side LS2meet may be a second corner C2. A point where the second short side SS2and the second long side LS2meet may be a third corner C3. A point where the second short side SS2and the first long side LS1meet may be a fourth corner C4.

Referring toFIGS.1and2, the display device1may include a base20, a pole30, and a motion module MM.

The base20may have a flat cylinder shape as a whole. The base20may be placed on the ground. For example, a plurality of moving wheels20w(seeFIG.34) may be mounted on the lower surface of the base20. Accordingly, a user can smoothly move the base20on the ground. The base20may be referred to as a moving base.

The pole30may extend long in the vertical direction. The lower end of the pole30may be coupled to the base20. The pole30may be adjacent to the periphery of the upper surface of the base20. A handle39may be coupled to the upper end of the pole30. The pole30and the above-described base20may be collectively referred to as a stand.

The motion module MM may extend in a direction intersecting the pole30. One side of the motion module MM may be coupled to a rear side of the head10. The other side of the motion module MM may be adjacent to the upper end of the pole30, and may be coupled to the pole30. An articulated connector40may be coupled to the rear side of the head10, an elevating module60may be coupled to the pole30, and an arm50may connect the articulated connector40and the elevating module60.

Accordingly, the head10may be supported by the motion module MM, the pole30, and the base20, and may be spaced upward from the ground.

Referring toFIGS.3and4, the head10may include a display panel11, a middle cabinet12, a frame13, an end frame14, and a back cover15.

The display panel11may form the front surface of the head10. For example, the display panel11may be an OLED panel, an LCD panel, or an LED panel. The display panel11may divide an image into a plurality of pixels and output an image by matching color, brightness, and saturation for each pixel. The display panel11may be divided into an active area in which an image is displayed and a de-active area in which an image is not displayed. The display panel11may generate light corresponding to a color of red, green, or blue according to a control signal.

The middle cabinet12may extend along the periphery of the display panel11. A horizontal portion12H may be positioned in the front direction of the display panel11. A vertical portion12V may intersect the horizontal portion12H, and may cover the side surface of the display panel11. A front pad11F may be positioned between the horizontal portion12H and the display panel11, and may be coupled to the horizontal portion12H. A rear pad11R may be opposite to the front pad11F with respect to the display panel11. For example, the middle cabinet12may include a metal or plastic material. The middle cabinet12may be referred to as a side frame or a guide panel.

The frame13may be positioned in the rear direction of the display panel11. Electronic components such as a printed circuit board (PCB) may be coupled to the rear surface of the frame13. For example, the frame13may include a metal material. The frame13may be referred to as a plate or a module cover.

A fixing portion13H may protrude rearward from the rear surface of the frame13. The fixing portion13H may be a pemnut. A distance between the fixing portions13H may comply with a Video Electronics Standards Association (VESA) standard.

The end frame14may form a periphery of the head10. The horizontal portion14H may be positioned in the front direction of the horizontal portion12H of the middle cabinet12. The vertical portion14V may cover a side surface of the vertical portion12V of the middle cabinet12. For example, the end frame14may include a metal or plastic material. Meanwhile, in some embodiment, the end frame14may be omitted, and in this case, the middle cabinet12may form the periphery of the head10.

The back cover15may form a rear surface of the head10. The back cover15may be positioned in the rear direction of the frame13and may be coupled to the frame13. A portion of the frame13including the aforementioned fixing portion13H may be exposed to the outside through a hole15hformed in the center of the back cover15. For example, the back cover15may include a metal or plastic material. For example, a jersey made of a fabric material may be detachably coupled to the rear surface of the back cover15.

Referring toFIGS.4and5, a fixing member41may be positioned in the hole15hof the back cover15, and may be positioned in the rear direction of the frame13.

A fixing plate41amay have a circular plate shape as a whole, and may include a fixing hole41H aligned with the fixing portion13H. A spacing between the fixing holes41H may comply with the VESA standard. A fixing ring41bmay be positioned between the outer circumference of the fixing plate41aand a portion defining the hole15hof the back cover15, and may be coupled or fixed thereto. A fastening member such as a screw may be fastened to the fixing portion13H through the fixing hole41H. Accordingly, the fixing member41may be coupled to or fixed to the frame13.

Referring toFIGS.5and6, the articulated connector40may include the aforementioned fixing member41. A front bracket42may be positioned in the rear direction of the fixing member41, and may have a plate shape as a whole. A pair of first protrusions42amay protrude upward from the upper side of the front bracket42, and may be spaced apart from each other in the left-right direction. A pair of second protrusions42bmay protrude downward from the lower side of the front bracket42, and may be spaced apart from each other in the left-right direction. The pair of first protrusions42aand the pair of second protrusions42bmay be inserted and coupled to holes (not shown) formed in the fixing plate41a. Accordingly, the front bracket42may be detachably coupled to the fixing plate41a(seeFIG.11).

A pivot shaft44may extend in the front-rear direction. The diameter of a head44aof the pivot shaft44may be greater than the diameter of a body44b. The body44bmay have a cylindrical shape in which a part of a side surface is cut-out. A pair of cut-outs44cand cut-outs may be formed on the side surface of the body44b, and may be opposite to each other. The hole42hof the front bracket42may be formed in the center of the front bracket42, and may be penetrated by the body44b. The shape of the hole42hof the front bracket42may be the same as the shape of the longitudinal cross-section of the body44b. Accordingly, the pivot shaft44and the front bracket42may rotate together with respect to the axial direction of the pivot shaft44. That is, the pivot shaft44may provide a pivot axis.

A front grab45amay be positioned between the head44aand the front surface of the front bracket42. The hole45ahof the front grab45amay be aligned with the hole42hof the front bracket42, and may have the same shape as the hole42h. The body44bmay penetrate the holes45ahand42h. Protrusions45afmay protrude rearward from around the periphery of the front grab45a, may be spaced apart from each other at intervals of 90 degrees, and may be inserted and coupled to a groove or hole42fof the front bracket42. Accordingly, the coupling between the pivot shaft44and the front bracket42may be further strengthened by the front grab45a.

Referring toFIGS.7and8, the rear bracket43may be positioned in the rear direction of the front bracket42. The rear bracket43may include a mount43F, a left wing43L, and a right wing43R.

The mount43F may face the front bracket42and may have a circular mount hole43Fh. The body44bof the pivot shaft44may penetrate the mount hole43Fh, and may rotate independently of the mount43F within the mount hole43Fh. In other words, even when the pivot shaft44rotates, the rear bracket43may not rotate. For example, at least one washer43Fw may be positioned between the front bracket42and the mount43F, and may have a circular hole through which the body44bpasses.

The left wing43L may extend in the rear direction from the left side of the mount43F. The right wing43R may extend in the rear direction from the right side of the mount43F. A plurality of members45cdescribed later (45c1,45c2,45c3,45c4,45c5) may be coupled to the mount43F at between the left wing43L and the right wing43R.

A rear grab45clmay be opposite to the washer43Fw with respect to the mount43F, and may have a circular hole45chthrough which the body44bof the pivot shaft44passes. The protrusions45cfmay protrude in the front direction from around the periphery of the rear grab45c1, may be spaced apart from each other at intervals of 90 degrees, and may be inserted and coupled to a groove or hole42Ff of the mount43F. Accordingly, the rear grab45c1may be coupled to the rear surface of the mount43F.

In addition, a plurality of fixing holes45caand a plurality of slots45cbmay be formed to penetrate the rear grab45c1in the thickness direction of the rear grab45c1, and may be separated from each other in the circumferential direction of the rear grab45c1. The plurality of fixing holes45caand the plurality of slots45cbmay be alternately positioned in the circumferential direction of the rear grab45c1. For example, the fixing holes45caor the slots45cbmay be spaced apart from each other at intervals of 90 degrees. In the circumferential direction of the rear grab45c1, the length of the slot45cbmay be greater than the length of the fixing hole45ca.

A disc45c2may be positioned in the rear direction of the rear grab45c1, and may have a hole45c2hthrough which the body44bof the pivot shaft44passes. The shape of the hole45c2hmay be the same as the shape of the longitudinal cross-section of the body44b. A plurality of bosses45ccmay protrude from the front surface of the disc45c2toward the rear grab45c1, and may be spaced apart from each other in the circumferential direction of the disc45c2. For example, the bosses45ccmay be spaced apart from each other at intervals of 90 degrees. The size of the boss45ccmay be the same as or correspond to the size of the fixing hole45ca. That is, when the boss45ccis inserted into the fixing hole45ca, the rotation of the disc45c2and the pivot shaft44may be limited by the rear grab45c1. Further, when the boss45ccis inserted into the slot45cb, the disc45c2and the pivot shaft44may rotate within the trajectory of a slot45cb.

The washer45c3may be positioned in the rear direction of the disc45c2, and may have a circular hole (no reference numeral) through which the body44bof the pivot shaft44passes.

A disc spring45c4may be opposite to the disc45c2with respect to the washer45c3, and may have a circular hole (no reference numeral) through which the body44bof the pivot shaft44passes. The disc spring45c4may be resilient and may be convex in the front direction or rear direction. The disc spring45c4may generate an elastic force in the axial direction of the pivot shaft44. For example, the disc spring45c4may be provided as a pair. In this case, the first disc spring45c41and the second disc spring45c42may be convex in different directions. The first disc spring45c41may be convex in the rear direction, and the second disc spring45c42may be convex in the front direction from the rear direction of the first disc spring45c41. Accordingly, the overall elastic force of the first and second disc springs45c41and45c42may be strengthened.

A cap45c5may be positioned in the rear direction of the disc spring45c4, and may have a hole45c5hthrough which the body44bof the pivot shaft44passes. The shape of the hole45c5hmay be the same as the shape of the longitudinal cross-section of the body44b. The cap45c5may be coupled to or fixed to the distal end of the body44b.

Accordingly, the pivot shaft44may rotate together with the front bracket42, the front grab45a, the disc45c2, and the cap45c5. In addition, the pivot shaft45may rotate independently of the washer43Fw, the rear bracket43, the rear grab45c1, the washer45c3, and the disc spring45c4. In other words, even when the pivot shaft45rotates, the washer43Fw, the rear bracket43, the rear grab45c1, the washer45c3, and the disc spring45c4may not rotate.

Besides, a user may pivot the head10(seeFIG.5) with respect to the pivot shaft44. For example, the head10may be pivoted within a range of +90 degrees to −90 degrees. In addition, due to the elastic force of the above-described disc spring45c41,45c2, the head10may maintain a certain pivot angle, as long as an external force greater than or equal to a certain level is not applied. In addition, during the pivoting movement of the head10, a user may feel a fastening feeling according to the fastening of the boss45ccand the fixing hole45caor the slot45cb. That is, when the boss45cccomes out of the slot45cband is inserted into the fixing hole45ca, a user can feel that the head10is positioned at a pivot angle of 0 degrees, +90 degrees, or −90 degrees.

Meanwhile, a left protrusion42L may be positioned between the center and the left side of the front bracket42, and may protrude in the rear direction from the front bracket42. A right protrusion42R may be positioned between the center and the right side of the front bracket42, and may protrude in the rear direction from the front bracket42. In addition, a stopper43S may protrude upward from the upper side of the mount43F, and may be positioned on the rotation trajectory of the left protrusion42L and the right protrusion42R. Accordingly, the stopper43S may limit the rotation of the front bracket42and the pivot shaft44to a certain angle.

Referring toFIG.9, a holder47may be positioned between the left wing43L and the right wing43R. A holder body470may cover the rear direction of the mount43F of the rear bracket43. A first part47L may protrude toward the mount43F from a left side portion of the holder body470, and may be adjacent to the left wing43L. A second part47R (seeFIG.7) may protrude from a right side portion of the holder47toward the mount43F, and may be adjacent to the right wing43R.

Atilt shaft46may extend in the left-right direction. The tilt shaft46may penetrate the left wing43L, the first part47L, the second part47R, and the right wing43R. A head (no reference numeral) that is one end of the tilt shaft46may be seated on a side surface of the left wing43L. The other end of the tilt shaft46may be threaded, and a fastening member46dsuch as a nut may be fastened to the other end of the tilt shaft46on the right wing43R.

In addition, the tilt shaft46may have a cylindrical shape as a whole, and may be fixed to the left wing43L and the right wing43R. The tilt shaft46may be rotatably coupled to the holder47. That is, the tilt shaft46may provide a tilt axis. At least one washer46vmay be positioned between the second part47R and the right wing43R, and may have a circular hole through which the tilt shaft46passes.

An elastic member46bmay be positioned between the left wing43L and the right wing43R. The elastic member46bmay be wound around the outer circumference of the tilt shaft46a plurality of times, and may have elasticity. The elastic member46bmay be a coil-shaped spring.

In addition, a portion46bof the elastic member46amay extend in a direction intersecting the tilt shaft46without being wound around the tilt shaft46. A seating portion43hmay protrude in the rear direction from the lower side of the mount43F of the rear bracket43, and may be adjacent to the left wing43L. The seating portion43hmay have a groove into which a portion of the elastic member46ais inserted. That is, a portion of the elastic member46amay be caught in the groove of the seating portion43h.

In addition, one end of the elastic member46amay be formed in the above mentioned portion46b. A disc spring46wmay be adjacent to the other end46cof the elastic member46a, and may be positioned between the elastic member46aand the second part47R. The disc spring46wmay have a circular hole (no reference numeral) through which the tilt shaft46passes. The disc spring46wmay have elasticity and may be convex in a direction toward the elastic member46a. The disc spring46wmay generate an elastic force in the axial direction of the tilt shaft46. The washer46umay be positioned between the disc spring46wand the second part47R, and may have a circular hole through which the tilt shaft46passes.

Accordingly, the tilt shaft46may rotate together with the rear bracket43, the front bracket42, and a plurality of members45c5,45c4,45c3,45c2,45c1,43Fw,45a, and44. In response to the rotation of the tilt shaft46, the head10(seeFIG.5) fixed to the front bracket42may be tilted up or down. In this case, the elastic member46amay provide a force for supporting the head10inclined at a certain angle. In addition, the disc spring46wmay add a force for maintaining the angle of the head10inclined at a certain angle, as long as an external force greater than or equal to a certain level is not applied.

For example, the head10may be tilted within the range of +25 degrees to −25 degrees. In addition, due to the elastic force of the above-described elastic member46aand the disc spring46w, the head10may maintain a certain tilt angle, as long as an external force greater than or equal to a certain level is not applied.

Meanwhile, a pin47P may be fixed to the first part47L and/or the second part47R. For example, the pin47P may protrude to the left from the side surface of the first part47L.

In this case, the guide groove43gmay be formed while being depressed in the front direction from the rear end of the left wing43L. A reference point43gamay contact the pin47P in a state in which the head10(seeFIG.5) is not inclined up or down. An up groove43gbmay be formed by drawing an arc in a first rotation direction from the reference point43ga. A down groove43gcmay be formed by drawing an arc from the reference point43gain a second rotation direction opposite to the first rotation direction.

Here, the tilt shaft46may rotate in the first rotation direction or the second rotation direction. When the tilt shaft46rotates in the first rotation direction, the pin47P may relatively move on the down groove43gc. The rotation of the tilt shaft46may be limited as the down groove43gcis caught by the pin47P. When the tilt shaft46rotates in the second rotation direction, the pin47P may relatively move on the up groove43gb. The rotation of the tilt shaft46may be limited as the up groove43gbis caught by the pin47P.

Accordingly, a maximum angle at which the head10can be tilted upward may be determined according to the length of the up groove43gb. In addition, a maximum angle at which the head10can be tilted downward may be determined according to the length of the down groove43gc. For example, the head10may be tilted within the range of +25 degrees to −25 degrees.

Referring toFIG.10, a first rotation unit48may be positioned in the rear direction of the holder47. A first connection portion471may connect the holder47and the first rotation unit48. For example, the holder47, the first connection portion471, and the first rotation unit48may be formed as one body.

A cable holder49may be positioned in the rear direction of the front bracket42, and may be penetrated by the rear bracket43and the holder47. The cable holder49may be coupled to the left wing43L and the right wing43R through a fastening member such as a screw. A first plate49aand a second plate49bmay have a ring shape as a whole, and may be spaced apart from each other in the front-rear direction. Accordingly, a cable (not shown) may be wound around the cable holder49at between the first plate49aand the second plate49b.

Referring toFIGS.11and12, as described above, the front bracket42may be detachably coupled to the fixing plate41a(seeFIG.5).

A cover40c1may cover the rear direction of the cable holder49, and the first rotation unit48may pass therethrough (see40hinFIG.12). A fastening member49f1,49f2may penetrate the cable holder49to protrude in the rear direction, and may be coupled to the inner side of the cover40c1. For example, the fastening member49f1,49f2may be a screw or a bolt.

Referring toFIGS.13and14, the arm50may include arm body51,52. The arm body51,52may extend in a direction inclined upward by a certain angle (acute angle) with respect to a horizontal plane. The arm body51,52may extend parallel to the horizontal plane. For example, an upper arm body51and a lower arm body52may be coupled to each other in a vertical direction. As another example, the upper arm body51and the lower arm body52may be formed as one body. The arm50may be referred to as a rod50or a link50.

A front portion of the upper arm body51may be spaced upward from a front portion of the lower arm body52. A front groove50g1may be formed in the front portion of the arm body51,52and may have a “U” shape that is opened in the front direction. A rear portion of the upper arm body51may be spaced upward from a rear portion of the lower arm body52. A rear groove50g2may be formed in the rear portion of the arm body51,52, and may have a “U” shape that is opened in the rear direction.

An upper insertion hole51amay be formed to vertically penetrate the front portion of the upper arm body51, and may face the front groove50g1. An upper fastening hole51bmay be formed to vertically penetrate the rear portion of the upper arm body51, and may face the rear groove50g2.

A lower fastening hole52amay be formed to vertically penetrate the front portion of the lower arm body52, and may be aligned with the upper insertion hole51a. A lower insertion hole52bmay be formed to vertically penetrate the rear portion of the lower arm body52, and may be aligned with the upper fastening hole51b.

Meanwhile, a cable groove50cmay be formed on the lower surface of the lower arm body52, and may extend along the length direction of the lower arm body52. The cable C (seeFIG.19) may be positioned in the cable groove50c.

Meanwhile, a portion of the upper surface of the upper arm body51may have a recessed shape. In this case, a plurality of ribs51rmay be provided in the portion of the upper surface of the upper arm body51. Accordingly, the rigidity of the arm body51,52can be secured while reducing the weight of the arm body51,52.

Referring toFIG.15, a cover ring40c2may extend along the circumference of the cover40c1, and may be detachably coupled to the fixing ring41b(seeFIG.11).

An upper cover53may cover the surface of the upper arm body51(seeFIG.14). A lower cover54may cover the surface of the lower arm body52(seeFIG.14). The upper cover53and the lower cover54may be formed separately, or may be formed as one body.

The first rotation unit48may be inserted into the front groove50g1, and may be rotatably coupled to the arm50. The second rotation unit68may be inserted into the rear groove50g2, and may be rotatably coupled to the arm50. Meanwhile, the second rotation unit68may protrude from a vertical member61described later toward the rear groove50g2.

Referring toFIGS.15and16, the first rotation unit48may include a first body480, a first fastening member48a, a first upper fixing washer48b, a first disc spring48d, a first upper washer48e, a first upper bushing48f, a first lower bushing48g, a first lower washer48h, and a first lower fixing washer48c. The first rotation unit48may be referred to as a first swivel unit48or a first swivel module48.

The first body480may be opened vertically. The first body480may have a donut shape as a whole. For example, the first body480may be formed as one body with the first connection portion471. The first body480may be inserted into the front groove50g1.

The first fastening member48amay extend in a vertical direction. The first fastening member48amay be inserted into the arm50through the upper insertion hole51a(seeFIG.14), and may penetrate a hole480hformed in the center of the first body480. A head48ahof the first fastening member48amay be positioned inside the upper arm body51. The first fastening member48amay be screwed into the lower fastening hole52a(seeFIG.14).

The first upper fixing washer48bmay be positioned in the lower side of the head48ahof the first fastening member48a, and may be penetrated by the first fastening member48a. The first upper fixing washer48bmay be fixed to the inner side of the upper arm body51. For example, the first upper fixing washer48bmay be a toothed lock washer. A tooth48btof the first upper fixing washer48bmay be inserted and coupled to a groove (no reference numeral) formed in the inner side of the upper arm body51.

The first disc spring48dmay be positioned in the lower side of the first upper fixing washer48b. The first disc spring48dmay have elasticity, and may be convex toward the first upper fixing washer48b. The first disc spring48dmay generate an elastic force in the axial direction of the first fastening member48a.

The first upper washer48emay be positioned in the lower side of the first disc spring48d, and may be penetrated by the first fastening member48a. The first upper washer48emay have a ring shape.

The first upper bushing48fmay be opposite to the first disc spring48dwith respect to the first upper washer48e. The first fastening member48amay penetrate the first upper bushing48f. The first upper bushing48fmay have a cylindrical shape in which a flange (no reference numeral) is formed in an upper end. The flange of the first upper bushing48fmay contact on the first upper groove480aformed along the circumference of the hole480hin the upper surface of the first body480. A portion (no reference numeral) of the first upper bushing48fmay be inserted into the hole480hof the first body480, may be positioned between the inner circumferential surface of the first body480and the outer circumferential surface of the first fastening member48a, and may be in contact with the inner circumferential surface of the first body480and the outer circumferential surface of the first fastening member48a.

The first lower bushing48gmay be opposite to the first upper bushing48f, and may be spaced downwardly from the first upper bushing48f. The first fastening member48amay penetrate the first lower bushing48g. The first lower bushing48gmay have a cylindrical shape in which a flange (no reference numeral) is formed in a lower end. The flange of the first lower bushing48gmay contact on the first lower groove480bformed along the circumference of the hole480hin the lower surface of the first body480. A portion (no reference numeral) of the first lower bushing48gmay be inserted into the hole480hof the first body480, may be positioned between the inner circumferential surface of the first body480and the outer circumferential surface of the first fastening member48a, and may be in contact with the inner circumferential surface of the first body480and the outer circumferential surface of the first fastening member48a.

The first lower washer48hmay be positioned in the lower side of the first lower bushing48g, and may be penetrated by the first fastening member48a. The first lower washer48hmay have a ring shape.

The first lower fixing washer48cmay be opposite to the first lower bushing48gwith respect to the first lower washer48h, and may be penetrated by the first fastening member48a. The first lower fixing washer48cmay be fixed to the inner side of the lower arm body52. For example, the first lower fixing washer48cmay be a toothed lock washer. A tooth48ctof the first lower fixing washer48cmay be inserted and coupled to a groove (no reference numeral) formed in the inner side of the lower arm body52.

Accordingly, the first body480may rotate with respect to the first fastening member48a. That is, the first fastening member48amay provide a first swivel shaft. In addition, due to the elastic force of the first disc spring48ddescribed above, the head10may maintain a certain swivel angle, as long as an external force greater than or equal to a certain level is not applied.

Meanwhile, the first groove48gmay be formed along the circumferential direction of the first body480in the side surface of the first body480. The first groove48gmay face the inside of the front groove50g1. A first protrusion511may protrude from the front groove50g1toward the first groove48g, and may be inserted into the first groove48g. The length of the first protrusion511may be smaller than the length of the first groove48g. That is, when the first body480rotates with respect to the first fastening member48a, the first protrusion511may relatively move along the first groove48g. The rotation of the first body480may be limited as one end or the other end of the first groove48gis caught by the first protrusion511.

Accordingly, the maximum angle at which the head10can be rotated left and right may be determined according to the length of the first groove48g.

Referring toFIGS.15and17, the second rotation unit68may include a second body680, a second fastening member68a, a second lower fixing washer68b, a second disc spring68d, a second lower washer68e, a second lower bushing68f, a second upper bushing68g, a second upper washer68h, and a second upper fixing washer68c. The second rotation unit68may be referred to as a second swivel unit68or a second swivel module68.

The second body680may be opened vertically. The second body680may have a donut shape as a whole. The second body680may be connected to the vertical member61through a second connection portion611. For example, the second body680, the second connection portion611, and the vertical member61may be formed as one body. The second body680may be inserted into the rear groove50g2.

The second fastening member68amay extend in a vertical direction. The second fastening member68amay be inserted into the arm50through the lower insertion hole52b(seeFIG.14), and may penetrate the hole680hformed in the center of the second body680. The head68ahof the second fastening member68amay be positioned in the inner side the lower arm body52. The second fastening member68amay be screwed into the upper fastening hole51b(seeFIG.14).

The second lower fixing washer68bmay be positioned in the upper side of the head68ahof the second fastening member68a, and may be penetrated by the second fastening member68a. The second lower fixing washer68bmay be fixed to the inner side of the lower arm body52. For example, the second lower fixing washer68bmay be a toothed lock washer. A tooth68btof the second lower fixing washer68bmay be inserted and coupled to a groove (no reference numeral) formed in the inner side of the lower arm body52.

The second disc spring68dmay be positioned in the upper side of the second lower fixing washer68b. The second disc spring68dmay have elasticity, and may be convex toward the second lower fixing washer68b. The second disc spring68dmay generate an elastic force in the axial direction of the second fastening member68a.

The second lower washer68emay be positioned in the upper side of the second disc spring68d, and may be penetrated by the second fastening member68a. The second lower washer68emay have a ring shape.

The second lower bushing68fmay be opposite to the second disc spring68dwith respect to the second lower washer68e. The second fastening member68amay penetrate the second lower bushing68f. The second lower bushing68fmay have a cylindrical shape in which a flange (no reference numeral) is formed in the lower end. The flange of the second lower bushing68fmay contact on the second lower groove680aformed along the circumference of the hole680hin the lower surface of the second body680. A portion (no reference numeral) of the second lower bushing68fmay be inserted into the hole680hof the second body680, may be positioned between the inner circumferential surface of the second body680and the outer circumferential surface of the second fastening member68a, and may be in contact with the inner circumferential surface of the second body680and the outer circumferential surface of the second fastening member68a.

The second upper bushing68gmay be opposite to the second lower bushing68f, and may be upwardly spaced from the second lower bushing68f. The second fastening member68amay penetrate the second upper bushing68g. The second upper bushing68gmay have a cylindrical shape in which a flange (no reference numeral) is formed in an upper end. The flange of the second upper bushing68gmay contact on the second upper groove680bformed along the circumference of the hole680hin the upper surface of the second body680. A portion (no reference numeral) of the second upper bushing68gmay be inserted into the hole680hof the second body680, may be positioned between the inner circumferential surface of the second body680and the outer circumferential surface of the second fastening member68a, and may be in contact with the inner circumferential surface of the second body680and the outer circumferential surface of the second fastening member68a.

The second upper washer68hmay be positioned in the upper side of the second upper bushing68g, and may be penetrated by the second fastening member68a. The second upper washer68hmay have a ring shape.

The second upper fixing washer68cmay be opposite to the second upper bushing68gwith respect to the second upper washer68h, and may be penetrated by the second fastening member68a. The second upper fixing washer68cmay be fixed to the inner side of the upper arm body51. For example, the second upper fixing washer68cmay be a toothed lock washer. A tooth68ctof the second upper fixing washer68cmay be inserted and coupled to a groove (no reference numeral) formed in the inner side of the upper arm body51.

Accordingly, the second body680may rotate with respect to the second fastening member68a. That is, the second fastening member68amay provide a second swivel shaft. In addition, due to the elastic force of the above-described second disc spring68d, the head10can maintain a certain swivel angle, as long as an external force greater than or equal to a certain level is not applied.

Meanwhile, the second groove68gmay be formed along the circumferential direction of the second body680in the side surface of the second body680. The second groove68gmay face inward of the rear groove50g2. The second protrusion512may protrude from the rear groove50g2toward the second groove68g, and may be inserted into the second groove68g. The length of the second protrusion512may be smaller than the length of the second groove68g. That is, when the second body680rotates with respect to the second fastening member68a, the second protrusion512may relatively move along the second groove68g. The rotation of the second body680may be limited as one end or the other end of the second groove68gis caught by the second protrusion512.

Accordingly, the maximum angle at which the head10can be rotated left and right may be determined according to the length of the second groove68g.

Referring toFIG.18, the arm50may extend in a direction intersecting the head10and the pole30. The arm50may connect the articulated connector40and the elevating module60. The second rotation unit68of the elevating module60and the vertical member61may be connected through the second connection portion611. The second connection portion611may penetrate the pole30.

The vertical member61may extend in the length direction of the pole30. The vertical member61may be accommodated in the pole30. A partition wall61wmay be adjacent to the upper end of the vertical member61.

The pole30may extend in a vertical direction, and surround the vertical member61. A plurality of ribs30a,30b,30c, and30dmay be positioned between the pole30and the vertical member61, and may be spaced apart from each other in the circumferential direction of the pole30. The first rib30a, the second rib30b, the third rib30c, and the fourth rib30dmay be positioned in a vertex of an arbitrary rectangle inside the pole30.

In addition, the lower end31of the pole30may be inserted and coupled to a port21formed in the upper surface of the base20. For example, the port21may have a monticule shape.

Referring toFIGS.19and20, the vertical member61may have a cylindrical shape cut in half as a whole. The rear and lower sides of the vertical member61may be opened, and the upper side may be blocked by the partition wall61w.

The upper shaft62may extend in the length direction of the vertical member61. The upper shaft62may have a cylindrical shape with an upper side blocked. At least a portion of the upper shaft62may be accommodated in the vertical member61. A protrusion62amay protrude upward from the upper side of the upper shaft62, and may penetrate the partition wall61w. A fastening member62bsuch as a nut may be screwed to the protrusion62aon the partition wall61w. Accordingly, the upper shaft62may be detachably coupled to the vertical member61.

A cap69T may be fitted on the upper end of the vertical member61, and may be flat. A mount69M may be positioned on the cap69T, and may be fastened to the plurality of ribs30a,30b,30c,30d(seeFIG.18) through the vertical fastening member69F1. A handle body39aof the handle39may be opposite to the cap69T with respect to the mount69M, and may be fastened to the mount69M through a horizontal fastening member69F2. The handle body39amay have a track shape as a whole, and may be covered by a handle cover39b(seeFIG.2).

Referring toFIG.21, a stem63smay extend in a vertical direction and may be aligned with the vertical member61. The lower end of the stem63smay be inserted into the port21of the base20.

A gas spring62,63may include the above-described upper shaft62and a lower shaft63connected to the upper shaft62in an up-down direction. The lower shaft63may extend in the length direction of the upper shaft62, and may have a smaller diameter than the upper shaft62. That is, the lower shaft63may be inserted into the upper shaft62. The lower end of the lower shaft63may be fixed on the stem63s.

A clamp64,65may be opposite to the vertical member61with respect to the upper shaft62. In other words, the upper shaft62may be positioned between the vertical member61and the clamp64,65. For example, the clamp64,65may be provided in plurality. For example, the first clamp64and the second clamp65may be spaced apart from each other in the up-down direction.

The first clamp64may include a first semi-cylinder640, a first left flange641, and a first right flange642. The first semi-cylinder640may contact the outer circumference of the upper shaft62. The first left flange641may extend from one side of the first semi-cylinder640to the left, and may be coupled to a first portion61s1of the vertical member61through a fastening member64F. The first right flange642may extend from the other side of the first semi-cylinder640to the right, and may be coupled to a second portion61s2of the vertical member61through a fastening member (not shown).

The second clamp65may include a second semi-cylinder650, a second left flange651, and a second right flange652. The second semi-cylinder650may contact the outer circumference of the upper shaft62. The second left flange651may extend from one side of the second semi-cylinder650to the left, and may be coupled to a third portion65s1of the vertical member61through the fastening member65F. The second right flange652may extend from the other side of the second semi-cylinder640to the right, and may be coupled to a fourth portion (not shown) of the vertical member61through a fastening member (not shown).

Accordingly, the upper shaft62may be detachably coupled to the vertical member61. In addition, the upper shaft62can move down or up along the lower shaft63.

Referring toFIGS.21and22, a roller66a,66b,67a,67bmay be adjacent to the clamp64,65. For example, a first roller66a,66bmay be adjacent to the first clamp64, and a second roller67a,67bmay be adjacent to the second clamp65.

The first roller66a,66bmay include a first left roller66aand a first right roller66b. A body66a1aof a first left pin66almay penetrate the first left roller66aand a left side portion61L of the vertical member61. A flange66a1bof the first left pin66almay be positioned between the first left roller66aand the left side portion61L. The first left roller66amay be coupled to the left side portion61L through the first left pin66al. A body66b1aof a first right pin66b1may penetrate the first right roller66band a right side portion61R of the vertical member61. A flange66b1bof the first right pin66b1may be positioned between the first right roller66band the right side portion61R. Accordingly, the first right roller66bmay be coupled to the right side portion61R through the first right pin66b1.

For example, the second roller67a,67bmay have the same shape as the first roller66a,66b. That is, the contents described above with respect to the first rollers66aand66bmay be equally applied to the second rollers67aand67b. Accordingly, the second left roller67amay be coupled to the left side portion61L, and the second right roller67bmay be coupled to the right side portion61R.

In addition, the left roller66a,67amay be positioned between a third rib30cand a fourth rib30d, and may be in contact with the third rib30cand the fourth rib30d. The right roller66b,67bmay be positioned between a first rib30aand a second rib30b, and may be in contact with the first rib30aand the second rib30b. For example, the roller66a,66b,67a,67bmay have an oil groove through which a fluid such as oil flows. For example, the roller66a,66b,67a,67bmay include a Poly Oxy Methylene (POM) material.

Accordingly, the vertical member61can be smoothly raised or lowered inside the pole30by the roller66a,66b,67a,67b.

Referring toFIGS.21and23, the first left flange641of the first clamp64may be positioned between the third rib30cand the fourth rib30d. The first right flange642of the first clamp64may be positioned between the first rib30aand the second rib30b. The first clamp64may include a first center protrusion64a, a first left protrusion64b, and a first right protrusion64c.

The first center protrusion64amay protrude from the first semi-cylinder650toward the inner side of the pole30, and may contact the inner side of the pole30. For example, a plurality of first center protrusions64amay be spaced apart from each other, and may be parallel to each other. The first left protrusion64bmay protrude from the first left flange641toward the third rib30c, and may contact the third rib30c. The first right protrusion64cmay protrude from the first right flange642toward the second rib30b, and may contact the second rib30b. Accordingly, the first center protrusion64a, the first left protrusion64b, and the first right protrusion64cmay cause friction between the vertical member61and the pole30.

For example, the second clamp65may be spaced downward from the first clamp64, and may have the same shape as the first clamp64. That is, the above description of the first clamp64may be identically applied to the second clamp65. Accordingly, the second center protrusion65a, the second left protrusion65b, and the second right protrusion65cof the second clamp65may cause friction between the vertical member61and the pole30.

Accordingly, the position (height) of the vertical member61with respect to the base20may be uniformly maintained by a friction force between the protrusion64a,64b,64c,65a,65b,65cand the pole30, as long as an external force greater than or equal to a certain level is not applied.

Meanwhile, the length of the left protrusion64b,65band the right protrusion64c,65cmay be smaller than the length of the center protrusion64a,65a. Accordingly, the pole30may include a plurality of ribs30a,30b,30c, and30d, and the rigidity of the pole30may be sufficiently secured.

Referring back toFIGS.22and23, a cable groove61gmay be formed in a front portion61F of the vertical member61, and may be formed to be elongated in the vertical direction. A cable C may be inserted into the cable groove61g. The cable C may be disposed along the cable groove50c(seeFIG.14) of the arm50, and may be electrically connected to the head10. In addition, the cable C may be disposed along the stem63s(seeFIG.21), and may be electrically connected to electronic components such as a battery Bt (seeFIG.1) disposed inside the base20.

Referring toFIG.24, the head10may be spaced upwardly from the base20. A user may pivot the head10. In this case, a pivot axis may pass through the center of the head10and may be orthogonal to the head10. Referring to the left drawing ofFIG.24, the head10may be placed in a landscape mode. Referring to the right drawing ofFIG.24, the head10may be placed in a portrait mode.

Referring toFIG.25, a user may tilt the head10. In this case, the tilt axis may be a horizontal axis which is positioned in the rear direction of the center of the head10and parallel to the head10. A user may swivel the head10. In this case, a first swivel axis may be a vertical axis adjacent to one end of the arm50. Alternatively, a second swivel axis may be a vertical axis adjacent to the other end of the arm50. A user may raise or lower the head10from the pole30. At this time, the minimum height and the maximum height of the head10may be formed by engaging the arm50into the hole30hhformed in the pole30.

The above-described pivoting, tilting, swiveling, and elevating operations of the head10may be implemented independently of each other. For example, the head10may be pivoted within a range of +90 degrees to −90 degrees. For example, the head10may be tilted within the range of +25 degrees to −25 degrees. For example, the head10may be swiveled within a range of +65 to −65 degrees. For example, the head10may be positioned at 1,065 to 1,265 mm from the base20or the ground, based in a landscape mode.

Referring toFIG.26, a cradle90may include a front part91, a middle part92, and a rear part93. The middle part92may be positioned in the rear direction of the front part91, and may be coupled to the front part91. The rear part93may be opposite to the front part91with respect to the middle part92, and may be coupled to the middle part92.

Referring toFIGS.27and28, the front part91may include a first part91a, a second part91b, and a third part91c. The front surface of the first part91amay have a shape corresponding to the rear surface of a portion adjacent to the circumference of the back cover15among the rear surface of the back cover15(seeFIG.2). The front surface of the first part91amay be curved. The second part91bmay be bent in the front direction from the upper end of the first part91a. The angle between the second part91band the first part91amay be an obtuse angle. The third part91cmay be bent downward from the front end of the second part91b. The angle between the third part91cand the second part91bmay be a right angle or slightly greater than 90 degrees. Accordingly, the first part91amay have a shape in which a portion of an upper portion of the curved disc is cut off, and the second part91band the third part91cmay have a hook shape as a whole.

At least one magnet91M may be coupled to the first part91a. For example, a first magnet91M1, a second magnet91M2, and a third magnet91M3may be seated in a groove formed on the rear surface of the first part91a. Preferably, a plurality of magnets91M1,91M2, and91M3may be symmetrically disposed in the first part91a.

A support portion91V may be adjacent to the upper end of the first part91, and may protrude in the rear direction from the rear surface of the first part91. The support portion91V may extend in the left-right direction. A left fixing pin91P1may be fixed to one end of the support portion91V, and a right fixing pin91P2may be fixed to the other end of the support portion91V. A reinforcing portion91S1may have a hook shape, and may be inserted into the support portion91V For example, a single reinforcing portion91S1may extend long in the left-right direction along the support portion91V. For another example, one of a pair of reinforcing portions91S1may be adjacent to the left fixing pin91P1, and the other may be adjacent to the right fixing pin91P2.

Referring toFIG.29, the middle part92may be seated on the rear surface of the first part91a. The middle part92may have a shape corresponding to the first part91a, and may be penetrated by the support portion91V. In this case, the left fixing pin91P1(seeFIG.28) may be inserted into one side of the middle part92, and the right fixing pin91P2(seeFIG.28) may be inserted into the other side of the middle part92. Accordingly, the middle part92may be coupled to the front part91. Meanwhile, the first left cover pin92P1may be aligned with the left fixing pin91P1, and may close a hole formed in one side of the middle part92. In addition, the first right cover pin92P2may be aligned with the right fixing pin91P2, and may close a hole formed in the other side of the middle part92.

An axis holder92A,92B may protrude the rear direction from the lower portion of the middle part92. For example, the axis holder92A,92B may include a first axis holder92A and a second axis holder92B that are spaced apart from each other in the left-right direction.

The first axis holder92A may include a first insertion portion92alhaving a first insertion hole92a2and a first fixing portion92a3having a first fixing hole92a4. The first fixing member92a5such as a nut may be fixed to the inner side of the first fixing portion92a3and may be aligned with the first fixing hole92a4and the first insertion hole92a2.

The second axis holder92B may include a second insertion portion92b1having a second insertion hole92b2and a second fixing portion92b3having a second fixing hole92b4.

The second fixing member92b5such as a nut may be fixed to the inner side of the second fixing portion92b3and may be aligned with the second fixing hole92b4and the second insertion hole92b2.

For example, the second axis holder92B and the first axis holder92A may be symmetrical.

A fixing pin92S1,92S2may protrude in the rear direction from the lower portion of the middle part92. The fixing pin92S1,92S2may be adjacent to the axis holder92A,92B. For example, the fixing pin92S1,92S2may include a first fixing pin92S1and a second fixing pin92S2spaced apart from each other in the left-right direction.

The first fixing pin92S1may be adjacent to the first axis holder92A, and may protrude in the rear direction from the rear surface of the middle part92. The second fixing pin92S2may be adjacent to the second axis holder92B, and may protrude in the rear direction from the rear surface of the middle part92. For example, the second fixing pin92S2may have the same shape as the first fixing pin92S1.

Referring toFIGS.29and30, the rear part93may be positioned in the rear direction of the middle part92, and may face the middle part92.

A leaf93A,93B may protrude from the lower portion of the rear part93toward the middle part92. The leaf93A,93B may be positioned between the insertion portion92al,92b1and the fixing portion92a3,92b3of the axis holder92A,92B. A fastening member93F1,93F2such as a bolt may penetrate the insertion portion92al,92b1, the leaf93A,93B, and the fixing portion92a3,92b3, and may be fastened to the fixing member92a5,92b5. For example, the leaf93A,93B may include a first leaf93A that is penetrated by a first fastening member93F1at between the first insertion portion92aland the first fixing portion92a3, and a second leaf93B that is penetrated by a second fastening member93F2at between the second insertion portion92b1and the second fixing portion92b3.

Accordingly, the rear part93may rotate with respect to the fastening member93F1,93F2. That is, the fastening member93F1,93F2may provide a hinge axis of the rear part93.

An elastic member93S1,93S2may have elasticity, and may extend in the length direction of the fixing pin92S1,92S2. The fixing pin92S1,92S2may be inserted into the elastic member93S1,93S2. One end of the elastic member93S1,93S2may be fixed to the middle part92, and the other end of the elastic member93S1,93S2may be fixed to the rear part93. For example, the elastic member93S1,93S2may be a spring. For example, the elastic member93S1may include a first elastic member93S1wound around the outer circumference of the first fixing pin92S1and a second elastic member93S2wound around the outer circumference of the second fixing pin92S2.

Meanwhile, the left portion93L of the rear part93may have a first hole through which the first fastening member93F1passes, and a first cover pin93P1may close the hole. In addition, the right portion93R of the rear part93may have a second hole through which the second fastening member93F2passes, and a second cover pin (not shown) may close the second hole.

Referring toFIGS.26and31, when the rear part93may rotate clockwise with respect to the above-described hinge axis93F1,93F2by an external force applied to the rear part93, the elastic member93S1,93S2may be compressed and elastically deformed. That is, when the external force applied to the rear part93is released, the elastic member93S1,93S2may be extended and restored, and may rotate counterclockwise with respect to the above-described hinge axis93F1,93F2by the elastic force of the elastic member93S1,93S2.

Referring toFIG.26, in the initial state of the cradle90, the upper portion of the rear part93may be in contact with contact or adjacent to the middle part92.

Referring toFIG.31, a user may rotate the rear part93clockwise with respect to the above-described hinge axis93F1,93F1, and may insert a terminal Mo such as a smartphone into between the middle part92and the rear part93. In this case, the rear part93may press the terminal Mo to the middle part92by the elastic force of the elastic member93S1,93S2. Accordingly, the terminal Mo may be stably fixed to the cradle90.

Meanwhile, a middle pad92V may protrude in the rear direction from the rear surface of the middle part92. In addition, the rear pad93V may protrude in the front direction from the rear part93. A pad92V,93V made of a cushioning material such as rubber or silicon may alleviate an impact applied to the terminal Mo or minimize the occurrence of scratches on the terminal Mo by the cradle90.

Referring back toFIGS.1and2, a hook91b,91cof the cradle90may be caught on the end frame14. Specifically, the third part91cof the front part91may be caught on the horizontal portion14H (seeFIG.3) of the end frame14, the second part91bmay be positioned on the vertical portion14V (seeFIG.3) of the end frame14, and the first part91amay be positioned on the rear surface of the back cover15. Accordingly, the cradle90may be detachably coupled to the circumference of the head10.

Referring toFIG.32, the cradle90may be coupled to any point on the circumference of the head10. In addition, the cradle90may be more strongly coupled to the head10by using the magnetic force of the aforementioned magnet91M (seeFIG.27). For example, a position at which the cradle90is coupled to the head10by using the above magnetic force may correspond to a position of a plate16described later.

At least one plate16may be positioned between the frame13(seeFIG.3) and the back cover15, and may be coupled to the frame13and/or the back cover15. The plate16may be made of a magnetic substance such as iron Fe. The plate16may be formed flat, or may be curved along the curvature of the first part91a(seeFIG.28) of the cradle90. For example, the plate16may be provided in plurality.

A first plate16aand a second plate16bmay be adjacent to the upper side of the head10, and may be spaced apart from each other in the left-right direction. For example, the first plate16amay be positioned in the left side of a vertical line VL passing through a center O of the head10, and the second plate16bmay be positioned in the right side of the vertical line VL. A third plate16cmay be adjacent to the left side of the head10, and a fourth plate16dmay be adjacent to the right side of the head10. For example, the third plate16cand the fourth plate16dmay be positioned on a horizontal line HL passing through the center O of the head10or slightly offset upward or downward therefrom.

Accordingly, at the position of the plate16, the cradle90may be more strongly coupled to the head10by the magnetic attraction between the magnet91M (seeFIG.27) and the plate16.

Meanwhile, a gyro sensor17may be mounted on the frame13at between the frame13and the back cover15. For example, the display device may include one gyro sensor17. For example, the gyro sensor17may be positioned apart from the vertical line VL and the horizontal line HL. As another example, the display device may include a plurality of gyro sensors17. The sensing value of the gyro sensor17may vary according to a pivot angle of the head10. Accordingly, the gyro sensor17may detect a pivot of the head10and a mode (ex., a landscape mode or a portrait mode) of the head10.

Referring toFIGS.33and34, a controller of the display device may detect a landscape mode (see the left drawing ofFIG.34) or a portrait mode (see the right drawing ofFIG.34) of the head10, based on information obtained from the gyro sensor17(seeFIG.32) (S10).

The controller may adjust the aspect ratio of the image according to the landscape mode or the portrait mode of the head10, and may output an image through the display panel11(S11).

Referring toFIG.35, the controller C0of the display device may control the operation of the display device. The controller C0may be electrically connected to components of the display device.

The display panel11, a main board Mb, a power supply board Pu, and a Timing Controller board (T-CON board) Tc may be electrically connected to the controller C0. The main board Mb, the power supply board Pu, and the T-CON board Tc may be mounted on the rear surface of the frame13(seeFIG.3). The main board Mb may control the display device. The controller C0may be implemented as the main board MB or may be a higher-order control unit that controls the main board Mb or the like. The power supply board Pu may receive power from a battery Bt (seeFIG.1) and/or an external power source through a cable, and may provide power to each component of the display device. The T-CON board Tc may provide an image signal to the display panel110.

A speaker SPK may be electrically connected to the controller C0. The speaker SPK may be installed in the head10, the pole30, the arm50, and/or the base20, and may provide sound.

The gyro sensor17may be electrically connected to the controller C0.

A communication unit Cm may include a near field communication (NFC) module N1and/or a Wi-Fi module N2. The NFC module N1(seeFIG.13) may be mounted in the frame13at between the frame13and the back cover15, and may be adjacent to the right and lower sides of the head10. A user may connect the head10and the terminal Mo by tagging the terminal to the NFC module N1. The Wi-Fi module N2(seeFIG.13) may be mounted in the frame13at between the frame13and the back cover15, and may be adjacent to the upper side of the head10. The head10may access the network through the Wi-Fi module N2.

An input unit Pm may be electrically connected to the controller C0. A user may input a command or signal to the controller C0through the input unit Pm. For example, the input unit Pm may be a button Bu, the display panel11, and/or a microphone Mc. The button Bu (seeFIG.32) may be mounted in the frame13at between the frame13and the back cover15, and may be adjacent to the left side and the lower side of the head10. A user may control the head10by handling the button Bu. The display panel11may be implemented as a touch type, and a user may control the display device by touching the display panel11. The microphone Mc may be installed in the display device, and a user may control the display device by inputting a voice into the microphone Mc. For example, the input unit Pm may be a remote controller Rc that is handled by a user and communicates with the display device, or may be an application App that is installed in the user's terminal (smartphone) and communicates with the display device.

Referring toFIGS.35and36, the motor410may be coupled to the rear surface of the frame13through a motor mount410a. The motor410may be a motor capable of adjusting a rotation direction, a rotation angle, and a rotation speed. The motor410may be a step motor.

A worm413may be fixed to a rotation shaft411of the motor410through a coupling member412, and may rotate together with the rotation shaft411. A worm wheel414may be engaged with a thread formed on the outer circumferential surface of the worm413. The axis of rotation of the worm413may be parallel to the left-right direction, and the axis of rotation of the worm wheel414may be parallel to the up-down direction.

A drive shaft44sof the pivot shaft44may be opposite to the body44bwith respect to the head44a, and may be fixed to the worm wheel414.

Accordingly, when the motor410is driven, the pivot shaft44may rotate in a first rotation direction or in a second rotation direction opposite to the first rotation direction. That is, the head10(seeFIG.24) may be automatically pivoted.

A disc indicator418may be adjacent to a distal end of the worm413, and may be fixed to the distal end of the worm413. The disc indicator418may include a plurality of holes (no reference numeral) that are spaced apart from each other in the circumferential direction of the disc indicator418.

A rotation sensor419may be adjacent to the disc indicator418, and may be fixed to one side of a gear box410bmounted in the frame13while accommodating the worm413and the worm wheel414. The rotation sensor419may have a horseshoe shape. A light emitting unit and a light receiving unit of the rotation sensor419face each other but may be spaced apart from each other. The disc indicator418may rotate while passing between the light emitting unit and the light receiving unit according to the rotation of the worm413. In response to the rotation of the disc indicator418, the light of the light emitting unit may penetrate the hole of the disc indicator418or be blocked by the disc indicator418.

Accordingly, the rotation sensor419may detect the number of rotations and/or the amount of rotation of the motor410.

The above-described motor410and the rotation sensor419may be electrically connected to the controller C0. That is, the controller C0may control the pivot of the head10(seeFIG.24) by adjusting the operation of the motor410, based on information obtained from the rotation sensor419.

Referring toFIGS.37and38, a user's terminal Mo may communicate with the head10through a communication unit Cm (seeFIG.35). That is, a user tags the terminal Mo to the NFC module N1(seeFIG.35), or connects the head10to a network through the Wi-Fi module N2, so that a screen of the terminal Mo can be mirrored to the head10(S20).

The controller C0may identify the landscape mode or the portrait mode of the terminal Mo, based on information obtained from the terminal Mo through the communication unit Cm (S21).

The controller C0may pivot the head10according to the landscape mode or the portrait mode of the terminal Mo (S22). When the terminal Mo is in the landscape mode, the controller C0may pivot the head10in the landscape mode (see the left drawing ofFIG.38) by adjusting the rotation of the motor410(seeFIG.36). When the terminal Mo is in the portrait mode, the controller C0may pivot the head10in the portrait mode (see the right drawing ofFIG.38) by adjusting the rotation of the motor410(seeFIG.36).

The controller C0may adjust the aspect ratio of the image according to the landscape mode or the portrait mode of the head10, and may output an image through the display panel11(S23).

Referring toFIGS.39to41, the controller C0may recognize the terminal Mo mounted on the head10by using the cradle90, based on information obtained from the gyro sensor16(seeFIG.32) (S30). The display panel of the terminal Mo may be provided on the front surface of the terminal Mo, and a camera My of the terminal Mo may be provided on the rear surface of the terminal Mo.

The controller C0may identify the position of the terminal Mo mounted on the head10, based on the information obtained from the gyro sensor16(S31).

The controller C0may pivot the head10according to the position of the identified terminal Mo (S32).

Referring to (a) ofFIG.40, in the landscape mode of the head10, when the terminal Mo is in a position P1corresponding to the fourth plate16d, the controller C0may convert the head10from the landscape mode to the portrait mode by rotating the head10clockwise by 90 degrees. When the terminal Mo is in a position P4corresponding to the third plate16c, the controller C0may convert the head10from the landscape mode to the portrait mode by rotating the head10counterclockwise by 90 degrees.

Further, in the landscape mode of the head10, if the terminal Mo is in a position P2corresponding to the second plate16bor a position P3corresponding to the first plate16a, the controller C0can maintain the landscape mode of the head10.

Referring to (b) ofFIG.40, in a first portrait mode of the head10, the first and second plates16aand16bmay be adjacent to the left side of the head10. In the first portrait mode of the head10, when the terminal Mo is in a position Q1corresponding to the second plate16bor a position Q2corresponding to the first plate16a, the controller C0may convert the head10from the first portrait mode to the landscape mode by rotating the head10counterclockwise by 90 degrees.

In addition, in the first portrait mode of the head10, when the terminal Mo is in a position Q3corresponding to the fourth plate16d, the controller C0can maintain the head10in the first portrait mode.

Further, in the first portrait mode of the head10, when the terminal Mo is in a position Q4corresponding to the third plate16c, the controller C0may convert the head10from the first portrait mode to a second portrait mode described later by rotating the head10counterclockwise by 180 degrees.

Referring to (c) ofFIG.40, in the second portrait mode of the head10, the first and second plates16aand16bmay be adjacent to the right side of the head10. In the second portrait mode of the head10, when the terminal Mo is in a position R1corresponding to the first plate16aor a position R2corresponding to the second plate16b, the controller may convert the head10from the second portrait mode to the landscape mode by rotating the head10clockwise by 90 degrees.

In addition, in the second portrait mode of the head10, when the terminal Mo is in a position R3corresponding to the third plate16c, the controller C0can maintain the second portrait mode of the head10.

Further, in the second portrait mode of the head10, when the terminal Mo is at the position R4corresponding to the fourth plate16d, the controller C0may convert the head10from the second portrait mode to the first portrait mode by rotating the head10clockwise by 180 degrees.

The controller C0may adjust the aspect ratio of the image according to the landscape mode or the portrait mode of the head10, and may output an image through the display panel11(S33).

Referring toFIGS.35and42, a wireless charging unit19may be positioned between the plate16and the back cover15. The wireless charging unit19may be coupled to the frame13(seeFIG.3) and/or the back cover15. The wireless charging unit19may wirelessly provide electrical energy to an electronic device through an inductive coupling method or a resonance coupling method. The wireless charging unit19may receive power from a power supply board Pu.

An inductive coupling method uses a principle that when the strength of a current flowing in one coil of two adjacent coils is changed, the magnetic field is changed by the current, and thus, the magnetic flux passing through the other coil is changed, so that the induced electromotive force is generated. That is, without moving two conductors spatially, if a current in only one coil is changed while two coils are brought close to each other, an induced electromotive force is generated in the other coil. In this case, the frequency characteristic is not significantly affected, but the power efficiency is affected by the alignment and distance between a transmitter (i.e. the wireless charging unit) and a receiver (i.e. the terminal) including each coil.

A resonance coupling method uses a principle that a part of the magnetic field change generated by applying a resonance frequency to any one of two coils spaced apart by a certain distance is applied to the other coil of the same resonance frequency to generate an induced electromotive force. That is, when the transmitter and the receiver resonate respectively with the same frequency, the electromagnetic waves are transmitted through a short-range electromagnetic field, and thus there is no energy transfer when the frequencies are different. In this case, it may be significantly important to select a frequency. In addition, since there is no energy transfer between different resonant frequencies, a charging target device may be selected through resonant frequency selection.

The wireless charging unit19may include a coil19belectrically connected to a Printed Circuit Board (PCB)19a. The coil19bmay wirelessly charge the terminal Mo seated in a charging area15A of the back cover15.

Accordingly, the terminal Mo may be mounted on the back cover15through the above-described cradle90(seeFIG.2), and may be wirelessly charged by facing the coil19bwith respect to the charging area15A. For example, each of the plurality of wireless charging units19may be positioned in each of the plurality of plates16a,16b,16c, and16d. That is, the display device may provide a plurality of wireless charging areas.

The aforementioned wireless charging unit19may be electrically connected to the controller C0. The controller C0may identify the position of the terminal Mo mounted on the head10, based on the information obtained from the gyro sensor16(seeFIG.32). When it is recognized that the terminal Mo is mounted on the head10so that the terminal Mo overlaps the charging area15A, the controller C0may operate the wireless charging unit19. The controller C0may operate only the wireless charging unit19corresponding to the position of the terminal Mo among the plurality of wireless charging units19.

Next,FIG.43is an overview illustrating the back cover15having an opening or hole15hthrough which fixing portions13H and a click-type coupling part130are exposed (see alsoFIG.4). The click-type coupling part130allows for the fixing member41of the motion module (MM) to be quickly and easily click snapped onto the display device. As shown inFIGS.4and43, the fixing portions13H and click-type coupling part130are exposed through the opening15hof the back cover15on the frame13.

Also,FIGS.5and44illustrate the opening15hbeing closed by a fixing member41coupled to a rear of the frame13. That is, as shown inFIG.44, the fixing member41of the motion module (MM) is coupled to the frame13through the opening15hof the back cover15. Also, as shown inFIG.44, the click portion (engaging portions154) of the click-type coupling part130are exposed through openings41c(FIG.45) of the fixing member41of the motion module (MM). A release protrusion156of the click-type coupling part130also protrudes through a pin hole in the fixing member41.

In addition,FIGS.5and45illustrates the fixing member41positioned in the opening15hof the back cover15. As shown inFIGS.5and45, the fixing member41includes the fixing plate41a, which may have a circular plate shape, and the fixing ring41b. The pair of first protrusions42aand the pair of second protrusions42bof the connector40(FIGS.2and6) are aligned with the openings41cof the fixing member41. In addition, the fixing ring41bis positioned between the outer circumference of the fixing plate41aand a portion defining the opening or hole15hof the back cover15and may be coupled or fixed thereto. A fastening member such as a screw can be fastened to the fixing portions13H through the fixing holes41H. Accordingly, the fixing member41can be coupled to or fixed to the frame13. As shown inFIG.45, a pin hole is included in the fixing ring41and allows the release protrusion to pass therethrough and be pressed to release the connector40.

In more detail, as shown inFIG.45, the release protrusion156of the click-type coupling part130protrudes through a hole in the fixing ring41bof the fixing member41. Also, a width of the hole is greater than an outer diameter of the release protrusion156. In addition, the lower openings41cprovide the function of exposing the engaging portions154so that the lower protruding portions42bof the connector40can press against the engaging portion154.

Next,FIG.46is an overview illustrating the frame13with the back cover removed exposing the various Printed Circuit Boards (PCBs) provided on the rear surface of the frame13. As shown, the click-type coupling part130is attached to the rear surface of the frame13to secure the fixing member41with the engaging portions154of the click-type coupling part130. Thus, the motion module (MM) can be click-coupled to the display device.

Next,FIG.47includes overviews of the rear of the frame13including the click-type coupling part130coupled to the frame13.FIG.47also illustrates the fixing portions13H. As shown inFIG.47, the click-type coupling part130is disposed below the fixing portions13H so that the fixing portions13H are accessible when the fixing member41is removed. In addition,FIG.47also illustrates the click-type coupling part130including a fixing plate140coupled to the frame13and a click bracket150connected to the fixing plate14. Thus, the fixing plate140can be coupled to the frame13and the click bracket150can be coupled to the fixing plate140via screws135, for example.

In more detail,FIG.48is an exploded view of the click-type coupling part130including a fixing plate140to be coupled to the rear surface of the frame13and supporting a first end of an elastic member or spring160. In particular, the fixing plate140includes protruding guide pins142receiving the first ends of the springs160as shown inFIG.48. Also, the click-type coupling part130includes the click bracket150to be coupled to the fixing plate140via screws135passing through the click bracket150to be fastened to the fixing plate140and the frame13. In addition, as shown inFIG.48, the click bracket150includes elongated guide holes152guiding the click bracket150onto protruding threading portions143of the fixing plate140. The click bracket150can then be secured to the fixing plate140via the screws135engaging into the protruding threading portions143.FIG.48also illustrates the click bracket150having the release protrusion156to be protruded through a hole in the fixing member41(seeFIG.45). Pressing the release protrusion156can release the connector40from the display device.

In addition,FIG.48also illustrates the fixing plate140includes lower holes146and upper holes148used for mounting the fixing plate140to the frame13. In more detail, as shown inFIG.49, the frame13includes a frame protruding portion118extending through the upper hole148and a fastener, such as a screw116, passing through the lower hole146to secure the fixing plate140to the frame13. As shown inFIGS.48and49, the click bracket150is secured to the fixing plate140via the screws135extending through the elongated guide holes152in the click bracket150and being threaded into the protruding threading portions143of the fixing plate140. As shown inFIG.49, the screw116fixes the fixing plate140to the frame13along with the protruding portion118engaging into the upper hole148, such that rearward separation of the click-type coupling part130is prevented.FIG.49also illustrates the protrusion156of the click bracket150and a cross-sectional view of one of the springs160.

Next,FIG.50depicts a front view of the click-type coupling part130(seeFIGS.5and45). As shown inFIG.50, the lower ends of the springs160are supported on the protruding guide pins142and press the engaging portions154of the click bracket150upward into the openings41cof the fixing member41(see alsoFIG.45). Thus, with reference toFIGS.5,6and50, the process of connecting the articulated connector40(FIG.5) to the display device is as follows. That is, the first protrusions42aare inserted into the upper opening41c, and then the second protrusions42bpress the inclined surface of the engaging portions154and move the engaging portions154downward. When the second protrusions42bcontinue to press on the engaging portions154, the second protrusions42bpress away from the engaging portions154, and the engaging portions154move upward due to the force of the springs160. Therefore, the second protrusions42bare located between the frame13and engaging portions154and the articulated connector40is connected to the display device. Also, the user can press the release protrusion156(FIG.45), so the engaging portions154move downward, allowing the articulated connector40to be click-removed from the display device. Therefore, the articulated connector40is click-coupled and click-released to and from the frame13.

In addition,FIG.51depicts another front view of the click bracket150without the fixing plate140. In particular, the engaging portions154interact with the springs160, in which the upper end of the springs160bear against the click bracket150. The protruding threading portions143are also shown passing through the elongated guide holes152. Also, as shown, a vertical width of the elongated guide holes152is greater than a diameter of the protruding threaded portions143allowing the click-type coupling part130to move up and down with respect to the screw.

Referring toFIGS.43to51, a display device includes a display panel11(FIG.3); a frame13disposed at a rear of the display panel11; a fixing member41disposed at a rear of the frame13and coupled to the frame13, the fixing member41including upper openings14cand lower openings14c; a connector40(FIG.6) including upper protruding portions42athat are inserted into the upper openings14cand including lower protruding portions42baligned with the lower openings14csuch that the lower protruding portions42bpress against the exposed engaging portions154; and a locking unit130coupled to a rear surface of the frame13, the locking unit130including engaging portions154passing through the lower openings41cand elastic members160extending and pressing the engaging portions154.

Further, the lower protruding portions42bare engaged with and press against the engaging portions154exposed through the lower openings41c, and the upper protruding portions42aare engaged with the fixing member41. In addition, the locking unit130includes a coupling body (fixing plate140) coupled to the rear surface of the frame13and supporting a first end of the elastic member160, the coupling body140including guide pins (protruding threaded portions143) protruding rearward from a rear surface of the coupling body140; and a support body (click bracket150) disposed at a rear of the coupling body140, and including the engaging portions154contacting a second end of the elastic member160, the support body150including guide holes152guiding the placement of the support150onto the guide pins143. In addition, a width of a corresponding guide hole152is greater than an outer diameter of a corresponding guide pin143.

In addition, the locking unit130further includes fastening members135coupled to the guide pins143inserted into the guide holes152, the fastening members135having a head in contact with a rear surface of the support body150. Also, the frame13includes a coupling portion having a threaded coupling hole and a protruding portion, and the coupling body140of the locking unit130further includes a lower hole146through which a fastening member116passes into the threaded coupling hole of the frame; and an upper hole148into which the protruding portion of the frame13is inserted.

In addition, the fixing member41includes a first recessed portion41acomprising a fixing plate41a; and a second recessed portion41bcomprising a fixing ring41b. Also, the upper and lower openings41care formed through the fixing plate41a. Further, the engaging portions154of the locking unit130are spaced rearward from a rear surface of the second recessed portion41b, the lower protruding portion42bof the connector40is engaged with the engaging portion154of the locking unit130, and the upper protruding portion42aof the connector40is engaged with a lateral wall of the second recessed portion41b. Also, the support body150of the locking unit130includes a release protrusion156for release the connector30, the fixing ring41bincludes a pin hold through which the release protrusion156passes, and a width of the pin hole is greater than an outer diameter of the release protrusion156.

Referring toFIGS.1to42, a display device according to an aspect of the present disclosure may include: a base; a head spaced apart from the base and including a display panel; a pole extending from the base in a direction in which the head is spaced apart from the base; an articulated connector coupled to the head; an elevating module movably coupled to the pole in a length direction of the pole; and an arm extending in a direction intersecting the head and the pole, the arm having one side connected to the articulated connector and the other side connected to the elevating module.

The articulated connector may include a pivot module rotating about a pivot axis orthogonal to the head, the pivot module may include: a front bracket fixed to a rear surface of the head; a rear bracket positioned behind the front bracket and coupled to the arm; and a pivot shaft which penetrates the front bracket and the rear bracket, which is fixed to the front bracket, and which is rotatably coupled to the rear bracket, the pivot shaft providing the pivot axis.

The pivot module may include: a rear grab which is opposite to the front bracket with respect to the rear bracket, and which is fixed to the rear bracket, and to which the pivot shaft is rotatably coupled; a cap fixed to a distal end of the pivot shaft; and a disc spring positioned between the rear grab and the cap, and to which the pivot shaft is rotatably coupled.

The disc spring may further include: a first disc spring convex from the rear grab toward the cap; and a second disc spring positioned between the first disc spring and the cap, and convex from the cap toward the rear grab.

The pivot module may further include a disc positioned between the rear grab and the disc spring, and to which the pivot shaft is fixed, the disc may include a plurality of bosses which protrude from the disc toward the rear grab, and which are spaced apart from each other in a circumferential direction of the disc, the rear grab may further include: a plurality of fixing holes which have a size corresponding to the boss, and which are spaced apart from each other in a circumferential direction of the rear grab; and a plurality of slots which extend in the circumferential direction of the rear grab, which are longer than the fixing hole, and which are alternately disposed with the plurality of fixing holes.

The articulated connector may include: a tilt module which is parallel to the head, and which rotates about a tilt axis extending in a horizontal direction, the tilt module may include: a rear bracket coupled to a rear surface of the head and rotatably coupled to the arm about the tilt axis; a tilt shaft penetrating the rear bracket in a horizontal direction and fixed to the rear bracket, the tilt shaft providing the tilt axis; and an elastic member which is wound around an outer circumference of the tilt shaft in a coil shape, and which has one end caught on the rear bracket.

The tilt module may further include at least one disc spring which is adjacent to the other end opposite to the one end of the elastic member, and to which the tilt shaft is rotatably coupled, and which is convex toward the one end.

The tilt module may further include a holder to which the tilt shaft is rotatably coupled, and which is coupled to the arm, the holder may further include a pin protruding outward from a side surface of the holder, the rear bracket may further include a guide groove in which the pin is positioned, and which extends while drawing an arc in a rotation direction of the rear bracket.

The articulated connector may include a first rotation unit which is parallel to the head, and which rotates about a first swivel axis extending in a vertical direction, the first rotation unit may include: a holder coupled to a rear surface of the head; a first body connected to the holder and opened up and down; and a first fastening member which penetrate the opening of the first body, and to which the first body is rotatably coupled, and which is fixed to the arm, the first fastening member providing the first swivel axis.

The first rotation unit may further include: a fixing washer which is adjacent to one end of the first fastening member, which is fixed to an inner side of the arm, and through which the first fastening member passes; a disc spring which is opposite to the one end of the first fastening member with respect to the fixing washer, which is convex toward the fixing washer, and through which the first fastening member passes; a washer which is opposite to the fixing washer with respect to the disc spring, and through which the first fastening member passes; and a bushing which is opposite to the disc spring with respect to the washer, and through which the first fastening member passes, the bushing including a flange positioned on the first body, and a portion positioned in the opening of the first body.

The elevating module may include a second rotation unit which is parallel to the pole, and which rotates about a second swivel axis extending in a vertical direction, the second rotation unit comprises: a vertical member coupled to the pole; a second body connected to the vertical member and opened up and down; and a second fastening member which penetrates the opening of the second body, to which the second body is rotatably coupled, and which is fixed to the arm, the second fastening member providing the second swivel axis.

The elevating module may include: a vertical member positioned inside the pole, extending in a length direction of the pole, and coupled to the arm; a stem positioned between the vertical member and the base, coupled to the base, and extending in a length direction of the vertical member; a lower shaft fixed on the stem, and extending in a length direction of the vertical member; and an upper shaft fixed to an inner side of the vertical member, extending in a length direction of the vertical member, and movable along the lower shaft.

The elevating module may further include: a roller coupled to one side of the vertical member, and in contact with an inner surface of the pole; and a clamp opposite to the vertical member with respect to the upper shaft, and coupled to the vertical member, the clamp may include a protrusion protruding from the clamp toward the inner surface of the pole, and in contact with the inner surface of the pole.

The display device may further include a cradle caught on one side of the head, the cradle including a magnet positioned inside the cradle, the head may include: a back cover forming a rear surface of the head; and a plate opposite to the magnet with respect to the back cover, the cradle may include: a front part at which the magnet is positioned and in contact with the back cover; a rear part positioned behind the front part, the rear part being hinged to the front part with respect to a hinge axis between the front part and the rear part; and an elastic member positioned between the front part and the rear part, fixed to the front part and the rear part, adjacent to the hinge axis, and providing elastic force to the rear part.

The display device further may include a gyro sensor positioned at the head, and detecting a coupling between the head and the cradle; and a controller electrically connected to the gyro sensor, the articulated connector may include a pivot module that pivots together with the head, the pivot module including a motor and a power transmission member for transmitting power of the motor to a pivot axis of the pivot module, and the controller is configured to pivot the head, based on information obtained from the gyro sensor.

The display device may further include a wireless charging unit positioned between the plate and the back cover.

The base may include a plurality of moving wheels coupled to a lower surface of the base.

The effect of the display device according to the present disclosure will be described as follows.

According to at least one of the embodiments of the present disclosure, it is possible to provide a display device having a stand of a display panel.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure that can freely adjust the angle or position of a head having a display panel.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure capable of implementing various motion operations of a display panel, such as a pivot motion, a tilt motion, a swivel motion, and an elevating motion, independently of each other.

According to at least one of the embodiments of the present disclosure, it is possible to provide a mechanism for automatically adjusting the motion of a head in a user-friendly manner.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure capable of firmly coupling a cradle for placing a terminal such as a smartphone to a head.

According to at least one of the embodiments of the present disclosure, it is possible to provide a structure capable of wirelessly charging a terminal such as a smartphone placed on a cradle.

Any or other embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or other embodiments of the present disclosure described above may be used jointly or combined in each configuration or function.

For example, it means that configuration A described in a specific embodiment and/or drawings may be combined with configuration B described in other embodiments and/or drawings. That is, even if the coupling between the components is not directly described, it means that the coupling is possible except for the case where it is described that the coupling is impossible.

The above detailed description should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present disclosure should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present disclosure are included in the scope of the present disclosure.