Display device

Abstract

A display device is disclosed. The display device of the present disclosure comprises: a base; a head spaced apart from the base and having 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 coupled to the pole so as to be movable in the longitudinal direction of the pole; and an arm extending in a direction intersecting the head and the pole, one end of which is connected to the articulated connector and the other end of which is connected to the elevating module.

Description

Technology Field

[0001] The present disclosure relates to a display device. Background Technology

[0002] As the information society develops, the demand for display devices is increasing in various forms. In response to this, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electroluminescent Display), VFD (Vacuum Fluorescent Display), and OLED (Organic Light Emitting Diode) have recently been researched and are being used.

[0003] Among these, the LCD panel is equipped with a TFT substrate and a color substrate facing each other with a liquid crystal layer in between, and can display an image using light provided from a backlight unit. Additionally, the OLED panel can display an image by depositing a self-emissive organic layer on a substrate having a transparent electrode formed thereon.

[0004] Recently, much research has been conducted on structures that allow for the free adjustment of the angle or position of display panels. The problem to be solved

[0005] The present disclosure aims to solve the aforementioned problems and other problems.

[0006] Another objective may be to provide a display device equipped with a stand for a display panel.

[0007] Another objective may be to provide a structure that allows the angle or position of a head equipped with a display panel to be freely adjusted.

[0008] Another objective may be to provide a structure capable of independently implementing various motion movements of the display panel, such as pivot movement, tilt movement, swivel movement, and elevation movement.

[0009] Another objective may be to provide a mechanism that can automatically adjust the head's motion in a user-friendly manner.

[0010] Another purpose may be to provide a structure that can securely attach a cradle for mounting a device, such as a smartphone, to the head.

[0011] Another purpose may be to provide a structure that can wirelessly charge a smartphone mounted on a cradle. means of solving the problem

[0012] According to one aspect of the present disclosure for achieving the above or other purposes, a display device may comprise: a base; a head spaced apart from the base and having 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 along the longitudinal direction of the pole; and an arm extending in a direction intersecting the head and the pole, one end of which is connected to the articulated connector and the other end of which is connected to the elevating module. Effects of the invention

[0013] The effects of the display device according to the present disclosure are described as follows.

[0014] According to at least one of the embodiments of the present disclosure, a display device having a stand for a display panel can be provided.

[0015] According to at least one of the embodiments of the present disclosure, a structure can be provided that allows the angle or position of a head equipped with a display panel to be freely adjusted.

[0016] According to at least one of the embodiments of the present disclosure, a structure can be provided that can independently implement various motion movements of a display panel, such as pivot movement, tilt movement, swivel movement, and elevation movement.

[0017] According to at least one of the embodiments of the present disclosure, a mechanism capable of automatically adjusting the motion of a head in a user-friendly manner can be provided.

[0018] According to at least one of the embodiments of the present disclosure, a structure can be provided that can firmly connect a cradle for mounting a terminal such as a smartphone to a head.

[0019] According to at least one of the embodiments of the present disclosure, a structure capable of wirelessly charging a smartphone mounted on a cradle can be provided.

[0020] Further scopes of the applicability of the present disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present disclosure are clearly understood by those skilled in the art, specific embodiments, such as the detailed description and preferred embodiments of the present disclosure, should be understood as being given merely as examples. Brief explanation of the drawing

[0021] FIGS. 1 to 42 are drawings illustrating examples of display devices according to embodiments of the present disclosure. Specific details for implementing the invention

[0022] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted.

[0023] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0024] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art may obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that they include all modifications, equivalents, and substitutions that fall within the concept and technical scope of this disclosure.

[0025] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0026] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0027] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0028] In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] The directional indications of Up (U), Down (D), Left (Le), Right (Ri), Front (F), and Rear (R) shown in the drawings are for convenience of explanation only and do not limit the technical concepts disclosed in this specification.

[0030] Referring to FIG. 1, the display device (1) may include a head (10). The head (10) may display an image. The head (10) may be referred to as a display (10) or a display unit (10, display unit).

[0031] The head (10) may include a first long side (LS1), a second long side (LS2) facing the first long side (LS1), a first short side (SS1) adjacent to the first long side (LS1) and the second long side (LS2), and a second short side (SS2) facing the first short side (SS1). Meanwhile, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are shown and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it is also possible for the lengths of the first and second long sides (LS1, LS2) to be approximately the same as the lengths of the first and second short sides (SS1, SS2).

[0032] The direction parallel to the short side (SS1, SS2) of the head (10) can be called the first direction (DR1) or the up-and-down direction. The direction parallel to the long side (LS1, LS2) of the head (10) can be called the second direction (DR2) or the left-right direction. The direction perpendicular to the long side (LS1, LS2) and the short side (SS1, SS2) of the head (10) can be called the third direction (DR3) or the front-back direction.

[0033] The direction in which the head (10) displays an image can be called the front (F, z), and the opposite direction can be called the rear (R). The first short side (SS1) can be called the left side (Le, x). The second short side (SS2) can be called the right side (Ri). The first long side (LS1) can be called the upper side (U, y). The second long side (LS2) can be called the lower side (D).

[0034] The first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) can be referred to as the edges of the head (10). Additionally, the point where the first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) meet each other can be referred to as a corner.

[0035] The point where the first short side (SS1) and the first long side (LS1) meet may be the first corner (C1). The point where the first short side (SS1) and the second long side (LS2) meet may be the second corner (C2). The point where the second short side (SS2) and the second long side (LS2) meet may be the third corner (C3). The point where the second short side (SS2) and the first long side (LS1) meet may be the fourth corner (C4).

[0036] Referring to FIGS. 1 and 2, the display device (1) may include a base (20), a pole (30), and a motion module (MM).

[0037] The base (20) may have an overall flat cylinder shape. The base (20) may be placed on the ground. For example, a plurality of moving wheels (20w, see FIG. 34) may be mounted on the lower surface of the base (20). Accordingly, the user can move the base (20) smoothly on the ground. The base (20) may be referred to as a moving base.

[0038] The pole (30) can be extended vertically. The lower end of the pole (30) can be attached to the base (20). The pole (30) can be adjacent to the perimeter of the upper surface of the base (20). A handle (39) can be attached to the top of the pole (30). The pole (30) and the aforementioned base (20) can be collectively referred to as a stand.

[0039] The motion module (MM) may extend in a direction intersecting the pole (30). One side of the motion module (MM) may be connected to the rear side of the head (10). The other side of the motion module (MM) may be adjacent to the top of the pole (30) and may be connected to the pole (30). An articulated connector (40) may be connected to the rear side of the head (10), and an elevating module (60) may be connected to the pole (30), and an arm (50) may connect the articulated connector (40) and the elevating module (60).

[0040] Accordingly, the head (10) can be supported by the motion module (MM), pole (30), and base (20) and can be spaced upward from the ground.

[0041] Referring to FIGS. 3 and 4, the head (10) may include a display panel (11), a middle cabinet (12), a frame (13), an end frame (14), and a back cover (15).

[0042] The display panel (11) can form the front surface of the head (10). For example, the display panel (11) may be an OLED panel, an LCD panel, or an LED panel. The display panel (11) can output an image by dividing the image into multiple pixels and matching the color, brightness, and saturation for each pixel. The display panel (11) may be divided into an active area where the image is displayed and a de-active area where the image is not displayed. The display panel (11) can generate light corresponding to the color red, green, or blue according to a control signal.

[0043] The middle cabinet (12) may extend along the perimeter of the display panel (11). The horizontal section (12H) may be located in front of the display panel (11). The vertical section (12V) may intersect the horizontal section (12H) and cover the side of the display panel (11). The front pad (11F) may be located between the horizontal section (12H) and the display panel (11) and may be attached to the horizontal section (12H). The rear pad (11R) may face the front pad (11F) with respect to the display panel (11). For example, the middle cabinet (12) may be made of metal or plastic material. The middle cabinet (12) may be referred to as a side frame or a guide panel.

[0044] The frame (13) may be located at the rear of the display panel (11). Electronic components, such as a PCB (Printed Circuit Board), may be attached to the rear of the frame (13). For example, the frame (13) may be made of a metal material. The frame (13) may be referred to as a plate or a module cover.

[0045] The fixing part (13H) may protrude rearward from the rear of the frame (13). The fixing part (13H) may be a pham nut. The spacing between the fixing parts (13H) may comply with VESA (Video Electronics Standards Association) standards.

[0046] The end frame (14) can form the perimeter of the head (10). The horizontal portion (14H) can be located in front of the horizontal portion (12H) of the middle cabinet (12). The vertical portion (14V) can cover the side of the vertical portion (12V) of the middle cabinet (12). For example, the end frame (14) may be made of metal or plastic material. Meanwhile, according to an embodiment, the end frame (14) may be omitted, in which case the middle cabinet (12) may form the perimeter of the head (10).

[0047] The back cover (15) may form the rear of the head (10). The back cover (15) may be located at the rear of the frame (13) and may be attached to the frame (13). A portion of the frame (13), including the aforementioned fixing portion (13H), may be exposed to the outside through a hole (15h) formed in the center of the back cover (15). For example, the back cover (15) may be made of metal or plastic material. For example, a jersey made of fabric material may be detachably attached to the rear of the back cover (15).

[0048] Referring to FIGS. 4 and 5, the fixing member (41) may be located in the hole (15h) of the back cover (15) and may be located at the rear of the frame (13).

[0049] The fixing plate (41a) may have a circular plate shape overall and may be provided with fixing holes (41H) aligned with the fixing portion (13H). The spacing between the fixing holes (41H) may conform to VESA standards. The fixing ring (41b) may be located between the outer circumference of the fixing plate (41a) and the portion defining the hole (15h) of the back cover (15), and may be coupled to or fixed thereto. A fastening member, such as a screw, may be fastened to the fixing portion (13H) through the fixing holes (41H). Accordingly, the fixing member (41) may be coupled to or fixed to the frame (13).

[0050] Referring to FIGS. 5 and 6, the articulated connector (40) may be provided with the aforementioned fixing member (41). The front bracket (42) may be located at the rear of the fixing member (41) and may have an overall plate shape. A pair of first protrusions (42a) may protrude upward from the upper edge of the front bracket (42) and may be spaced apart from each other in the left-right direction. A pair of second protrusions (42b) may protrude downward from the lower edge of the front bracket (42) and may be spaced apart from each other in the left-right direction. A pair of first protrusions (42a) and a pair of second protrusions (42b) may be inserted into and coupled with holes (not shown) formed in the fixing plate (41a). Accordingly, the front bracket (42) may be detachably coupled to the fixing plate (41a) (see FIG. 11).

[0051] The pivot shaft (44) may be extended in the forward and backward directions. The diameter of the head (44a) of the pivot shaft (44) may be larger than the diameter of the body (44b). The body (44b) may have a cylindrical shape with a portion of its side cut out. A pair of cut-outs (44c) may be formed on the side of the body (44b) and may face each other. A hole (42h) of the front bracket (42) may be formed in the center of the front bracket (42) and may be penetrated by the body (44b). The shape of the hole (42h) of the front bracket (42) may be the same as the shape of the cross-sectional area of ​​the body (44b). Accordingly, the pivot shaft (44) and the front bracket (42) may rotate together about the axial direction of the pivot shaft (44). That is, the pivot shaft (44) may provide a pivot axis.

[0052] The front grab (45a) can be positioned between the head (44a) and the front of the front bracket (42). The hole (45ah) of the front grab (45a) can be aligned with the hole (42h) of the front bracket (42) and can have the same shape as the hole (42h). The body (44b) can pass through the holes (45ah, 42h). The protrusions (45af) can protrude rearward from the circumference of the front grab (45a), can be spaced apart from each other at 90-degree intervals, and can be inserted into and coupled with the groove or hole (42f) of the front bracket (42). Accordingly, the coupling between the pivot shaft (44) and the front bracket (42) can be made more secure by the front grab (45a).

[0053] Referring to FIGS. 7 and 8, the rear bracket (43) may be located behind the front bracket (42). The rear bracket (43) may include a mount (43F), a left wing (43L), and a right wing (43R).

[0054] The mount (43F) may face the front bracket (42) and may have a circular mount hole (43Fh). The body (44b) of the pivot shaft (44) may pass through the mount hole (43Fh) and may rotate independently of the mount (43F) within the mount hole (43Fh). In other words, even if the pivot shaft (44) rotates, the rear bracket (43) may not rotate. For example, at least one washer (43Fw) may be positioned between the front bracket (42) and the mount (43F) and may have a circular hole through which the body (44b) passes.

[0055] The left wing (43L) may extend rearward from the left side of the mount (43F). The right wing (43R) may extend rearward from the right side of the mount (43F). A plurality of members (45c: 45c1, 45c2, 45c3, 45c4, 45c5) described below may be coupled to the mount (43F) between the left wing (43L) and the right wing (43R).

[0056] The rear grab (45c1) may be positioned opposite the washer (43Fw) to the mount (43F) and may be provided with a circular hole (45ch) through which the body (44b) of the pivot shaft (44) passes. The protrusions (45cf) may protrude forward from the circumference of the rear grab (45c1), may be spaced apart from each other at 90-degree intervals, and may be inserted into and coupled with the groove or hole (42Ff) of the mount (43F). Accordingly, the rear grab (45c1) may be coupled to the rear surface of the mount (43F).

[0057] Additionally, a plurality of fixing holes (45ca) and a plurality of slots (45cb) may be formed by penetrating the rear grab (45c1) in the thickness direction of the rear grab (45c1) and may be spaced apart from each other in the circumferential direction of the rear grab (45c1). The plurality of fixing holes (45ca) and a plurality of slots (45cb) may be positioned alternately in the circumferential direction of the rear grab (45c1). For example, the fixing holes (45ca) or the slots (45cb) may be spaced apart from each other at 90-degree intervals. In the circumferential direction of the rear grab (45c1), the length of the slot (45cb) may be greater than the length of the fixing hole (45ca).

[0058] The disc (45c2) may be located at the rear of the rear grab (45c1) and may be provided with a hole (45c2h) through which the body (44b) of the pivot shaft (44) passes. The shape of the hole (45c2h) may be the same as the shape of the cross-sectional surface of the body (44b). A plurality of bosses (45cc) may protrude toward the rear grab (45c1) from the front of the disc (45c2) and may be spaced apart from each other in the circumferential direction of the disc (45c2). For example, the bosses (45cc) may be spaced apart from each other at 90-degree intervals. The size of the bosses (45cc) may be the same as or correspond to the size of the fixing hole (45ca). That is, when the boss (45cc) is inserted into the fixed hole (45ca), the rotation of the disk (45c2) and the pivot shaft (44) can be restricted by the rear grab (45c1). Also, when the boss (45cc) is inserted into the slot (45cb), the disk (45c2) and the pivot shaft (44) can rotate within the trajectory of the slot (45cb).

[0059] The washer (45c3) may be located at the rear of the disk (45c2) and may have a circular hole (not shown) through which the body (44b) of the pivot shaft (44) passes.

[0060] The disc spring (45c4) may be positioned opposite the disc (45c2) with respect to the washer (45c3) and may have a circular hole (not shown) through which the body (44b) of the pivot shaft (44) passes. The disc spring (45c4) may have elasticity and may be convex forward or backward. The disc spring (45c4) may generate an elastic force in the axial direction of the pivot shaft (44). For example, the disc spring (45c4) may be provided as a pair. In this case, the first disc spring (45c41) and the second disc spring (45c42) may be convex in different directions. The first disc spring (45c41) may be convex backward, and the second disc spring (45c42) may be convex forward from the rear of the first disc spring (45c41). Accordingly, the total elasticity of the first and second disc springs (45c41, 45c42) can be strengthened.

[0061] The cap (45c5) may be located at the rear of the disc spring (45c4) and may have a hole (45c5h) through which the body (44b) of the pivot shaft (44) passes. The shape of the hole (45c5h) may be the same as the shape of the end face of the body (44b). The cap (45c5) may be attached to or fixed to the end of the body (44b).

[0062] Accordingly, the pivot shaft (44) can rotate together with the front bracket (42), front grab (45a), disc (45c2), and cap (45c5). Also, the pivot shaft (45) can rotate independently of the washer (43Fw), rear bracket (43), rear grab (45c1), washer (45c3), and disc spring (45c4). In other words, even if the pivot shaft (45) rotates, the washer (43Fw), rear bracket (43), rear grab (45c1), washer (45c3), and disc spring (45c4) may not rotate.

[0063] Additionally, the user can pivot the head (10, see FIG. 5) with respect to the pivot shaft (44). For example, the head (10) can pivot within a range of +90 degrees to -90 degrees. Also, due to the elastic force of the aforementioned disc springs (45c41, 45c2), the head (10) can maintain a certain pivot angle unless an external force exceeding a certain level is applied. Furthermore, during the pivot movement of the head (10), the user can feel the connection between the boss (45cc) and the fixing hole (45ca) or slot (45cb). That is, when the boss (45cc) comes out of the slot (45cb) and is inserted into the fixing hole (45ca), the user can feel that the head (10) is positioned at a pivot angle of 0 degrees, +90 degrees, or -90 degrees.

[0064] Meanwhile, the left projection (42L) can be positioned between the center and the left side of the front bracket (42) and can protrude rearward from the front bracket (42). The right projection (42R) can be positioned between the center and the right side of the front bracket (42) and can protrude rearward from the front bracket (42). Additionally, the stopper (43S) can protrude upward from the upper side of the mount (43F) and can be positioned on the rotational trajectory of the left projection (42L) and the right projection (42R). Accordingly, the stopper (43S) can limit the rotation of the front bracket (42) and the pivot shaft (44) to a certain angle.

[0065] Referring to FIG. 9, the holder (47) may be positioned between the left wing (43L) and the right wing (43R). The holder body (470) may cover the rear of the mount (43F) of the rear bracket (43). The first part (47L) may protrude toward the mount (43F) from the left side of the holder body (470) and may be adjacent to the left wing (43L). The second part (47R, see FIG. 7) may protrude toward the mount (43F) from the right side of the holder (47) and may be adjacent to the right wing (43R).

[0066] The tilt shaft (46) can be extended in the left and right directions. The tilt shaft (46) can pass through the left wing (43L), the first part (47L), the second part (47R), and the right wing (43R). The head (not labeled), which is one end of the tilt shaft (46), can be seated on the side of the left wing (43L). The other end of the tilt shaft (46) can be threaded, and a fastening member (46d), such as a nut, can be fastened to the other end of the tilt shaft (46) on the right wing (43R).

[0067] Also, the tilt shaft (46) may have a cylindrical shape overall and may be fixed to the left wing (43L) and the right wing (43R). The tilt shaft (46) may be rotatably coupled to the holder (47). That is, the tilt shaft (46) may provide a tilt axis. At least one washer (46v) may be located between the second part (47R) and the right wing (43R) and may have a circular hole through which the tilt shaft (46) passes.

[0068] The elastic member (46b) may be positioned between the left wing (43L) and the right wing (43R). The elastic member (46b) may be wound multiple times around the outer circumference of the tilt shaft (46) and may have elasticity. The elastic member (46b) may be a coil-shaped spring.

[0069] Also, a portion (46b) of the elastic member (46a) may extend in a direction intersecting the tilt shaft (46) without being wound around the tilt shaft (46). The seating portion (43h) may protrude rearward from the lower edge of the mount (43F) of the rear bracket (43) and may be adjacent to the left wing (43L). The seating portion (43h) may have a groove into which a portion of the elastic member (46a) is inserted. That is, a portion of the elastic member (46a) may be caught in the groove of the seating portion (43h).

[0070] Additionally, one end of the elastic member (46a) may be formed in the part (46b). A disc spring (46w) may be adjacent to the other end (46c) of the elastic member (46a) and may be located between the elastic member (46a) and the second part (47R). The disc spring (46w) may have a circular hole (not shown) through which the tilt shaft (46) passes. The disc spring (46w) may have elasticity and may be convex in the direction toward the elastic member (46a). The disc spring (46w) may generate an elastic force in the axial direction of the tilt shaft (46). A washer (46u) may be located between the disc spring (46w) and the second part (47R) and may have a circular hole through which the tilt shaft (46) passes.

[0071] Accordingly, the tilt shaft (46) can rotate together with the rear bracket (43), the front bracket (42), and a plurality of members (45c5, 45c4, 45c3, 45c2, 45c1, 43Fw, 45a, 44). In response to the rotation of the tilt shaft (46), the head (10, see FIG. 5) fixed to the front bracket (42) can be tilted up or down. At this time, the elastic member (46a) can provide a force to support the head (10) tilted at a certain angle. Additionally, the disc spring (46w) can provide a force to maintain the angle of the head (10) tilted at a certain angle, as long as an external force exceeding a certain level is not applied.

[0072] For example, the head (10) can be tilted within a range of +25 degrees to -25 degrees. Also, due to the elastic force of the aforementioned elastic member (46a) and the disc spring (46w), the head (10) can maintain a certain tilt angle unless an external force exceeding a certain level is applied.

[0073] Meanwhile, the pin (47P) can be fixed to the first part (47L) and / or the second part (47R). For example, the pin (47P) can protrude to the left from the side of the first part (47L).

[0074] At this time, the guide groove (43g) can be formed by being recessed forward from the rear end of the left wing (43L). The reference point (43ga) can come into contact with the pin (47P) without the head (10, see FIG. 5) being tilted up or down. The up groove (43gb) can be formed by drawing an arc in the first rotational direction from the reference point (43ga). The down groove (43gc) can be formed by drawing an arc in the second rotational direction opposite to the first rotational direction from the reference point (43ga).

[0075] Here, the tilt shaft (46) may rotate in the first rotation direction or the second rotation direction. When the tilt shaft (46) rotates in the first rotation direction, the pin (47P) may move relatively along the down groove (43gc). The rotation of the tilt shaft (46) may be limited by the down groove (43gc) engaging with the pin (47P). When the tilt shaft (46) rotates in the second rotation direction, the pin (47P) may move relatively along the up groove (43gb). The rotation of the tilt shaft (46) may be limited by the up groove (43gb) engaging with the pin (47P).

[0076] Accordingly, the maximum angle at which the head (10) can be tilted upward can be determined according to the length of the up groove (43gb). Also, the maximum angle at which the head (10) can be tilted downward can be determined according to the length of the down groove (43gc). For example, the head (10) can be tilted within the range of +25 degrees to -25 degrees.

[0077] Referring to FIG. 10, the first rotation unit (48) may be located at the rear of the holder (47). The first connecting part (471) may connect the holder (47) and the first rotation unit (48). For example, the holder (47), the first connecting part (471), and the first rotation unit (48) may be formed as one body.

[0078] The cable holder (49) may be located at the rear of the front bracket (42) and may be penetrated by the rear bracket (43) and the holder (47). The cable holder (49) may be connected to the left wing (43L) and the right wing (43R) through a fastening member such as a screw. The first plate (49a) and the second plate (49b) may have an overall ring shape and may be spaced apart from each other in the front-rear direction. Accordingly, a cable (not shown) may be wound around the cable holder (49) between the first plate (49a) and the second plate (49b).

[0079] Referring to FIGS. 11 and 12, as described above, the front bracket (42) can be detachably coupled to a fixed plate (41a, see FIG. 5).

[0080] The cover (40c1) can cover the rear of the cable holder (49) and the first rotating unit (48) can pass through it (see 40h in FIG. 12). The fastening members (49f1, 49f2) can pass through the cable holder (49) and protrude to the rear, and can be coupled to the inside of the cover (40c1). For example, the fastening members (49f1, 49f2) may be screws or bolts.

[0081] Referring to FIGS. 13 and 14, the arm (50) may include arm bodies (51, 52). The arm bodies (51, 52) may extend upward at a certain angle (acute angle) with respect to the horizontal plane. The arm bodies (51, 52) may also extend parallel to the horizontal plane. For example, the upper arm body (51) and the lower arm (52) may be joined together in a vertical direction. As another example, the upper arm body (51) and the lower arm body (52) may be formed as one body. The arm (50) may be referred to as a rod or a link.

[0082] The front portion of the upper arm body (51) may be spaced upward from the front portion of the lower arm body (52). The front groove (50g1) may be formed in the front portion of the arm body (51, 52) and may have a "U" shape that is open forward. The rear portion of the upper arm body (51) may be spaced upward from the rear portion of the lower arm body (52). The rear groove (50g2) may be formed in the rear portion of the arm body (51, 52) and may have a "U" shape that is open backward.

[0083] The upper insertion hole (51a) can be formed by penetrating the front portion of the upper arm body (51) in a vertical direction and may face the front groove (50g1). The upper fastening hole (51b) can be formed by penetrating the rear portion of the upper arm body (51) in a vertical direction and may face the rear groove (50g2).

[0084] The lower fastening hole (52a) can be formed by penetrating the front portion of the lower arm body (52) in a vertical direction and can be aligned with the upper insertion hole (51a). The lower insertion hole (52b) can be formed by penetrating the rear portion of the lower arm body (52) in a vertical direction and can be aligned with the upper fastening hole (51b).

[0085] Meanwhile, the cable groove (50c) may be formed on the lower surface of the lower arm body (52) and may extend along the longitudinal direction of the lower arm body (52). The cable (C, see FIG. 19) may be located in the cable groove (50c).

[0086] Meanwhile, a portion of the upper surface of the upper arm body (51) may have a recessed shape. At this time, a plurality of ribs (51r) may be provided on the portion of the upper surface of the upper arm body (51). Accordingly, the rigidity of the arm body (51, 52) can be secured while reducing the weight of the arm body (51, 52).

[0087] Referring to FIG. 15, the cover ring (40c2) can be extended along the circumference of the cover (40c1) and can be detachably coupled to the fixing ring (41b, see FIG. 11).

[0088] The upper cover (53) can cover the surface of the upper arm body (51, see FIG. 14). The lower cover (54) can cover the surface of the lower arm body (52, see FIG. 14). The upper cover (53) and the lower cover (54) may be formed separately or as one body.

[0089] The first rotation unit (48) can be inserted into the front groove (50g1) and can be rotatably coupled to the arm (50). The second rotation unit (68) can be inserted into the rear groove (50g2) and can be rotatably coupled to the arm (50). Meanwhile, the second rotation unit (68) can protrude toward the rear groove (50g2) from the vertical member (61) described later.

[0090] Referring to FIGS. 15 and 16, the first rotation unit (48) may include a first body (480), a first fastening member (48a), a first upper fixing washer (48b), a first disc spring (48d), a first upper washer (48e), a first upper bushing (48f), a first lower bushing (48g), a first lower washer (48h), and a first lower fixing washer (48c). The first rotation unit (48) may be referred to as the first swivel unit (48) or the first swivel module (48).

[0091] The first body (480) may be open vertically. The first body (480) may have a donut shape overall. For example, the first body (480) may be formed as one body with the first connecting part (471). The first body (480) may be inserted into the front groove (50g1).

[0092] The first fastening member (48a) may be extended in a vertical direction. The first fastening member (48a) may be inserted into the arm (50) through the upper insertion hole (51a, see FIG. 14) and may pass through the hole (480h) formed in the center of the first body (480). The head (48ah) of the first fastening member (48a) may be located on the inner side of the upper arm body (51). The first fastening member (48a) may be screw-coupled to the lower fastening hole (52a, see FIG. 14).

[0093] The first upper fixing washer (48b) may be located below the head (48ah) of the first fastening member (48a) and may be penetrated by the first fastening member (48a). The first upper fixing washer (48b) may be fixed to the inside of the upper arm body (51). For example, the first upper fixing washer (48b) may be a toothed lock washer. The teeth (48bt, tooth) of the first upper fixing washer (48b) may be inserted and coupled into a groove (not shown) formed on the inside of the upper arm body (51).

[0094] The first disc spring (48d) may be located below the first upper fixing washer (48b). The first disc spring (48d) may have elasticity and may be convex toward the first upper fixing washer (48b). The first disc spring (48d) may generate an elastic force in the axial direction of the first fastening member (48a).

[0095] The first upper washer (48e) may be located below the first disc spring (48d) and may be penetrated by the first fastening member (48a). The first upper washer (48e) may have a ring shape.

[0096] The first upper bushing (48f) may be opposed to the first disc spring (48d) with respect to the first upper washer (48e). The first fastening member (48a) may penetrate the first upper bushing (48f). The first upper bushing (48f) may have a cylindrical shape with a flange (not shown) formed at the top. The flange of the first upper bushing (48f) may contact the first upper groove (480a) formed along the hole (480h) on the upper surface of the first body (480). A part (not labeled) of the first upper bushing (48f) may be inserted into a hole (480h) of the first body (480), may be positioned between the inner surface of the first body (480) and the outer surface of the first fastening member (48a), and may come into contact with the inner surface of the first body (480) and the outer surface of the first fastening member (48a).

[0097] The first lower bushing (48g) may be positioned opposite the first upper bushing (48f) and may be spaced downward from the first upper bushing (48f). The first fastening member (48a) may penetrate the first lower bushing (48g). The first lower bushing (48g) may have a cylindrical shape with a flange (not shown) formed at the bottom. The flange of the first lower bushing (48g) may come into contact with the first lower groove (480b) formed along the hole (480h) on the lower surface of the first body (480). A part (not labeled) of the first lower bushing (48g) can be inserted into a hole (480h) of the first body (480), positioned between the inner surface of the first body (480) and the outer surface of the first fastening member (48a), and can come into contact with the inner surface of the first body (480) and the outer surface of the first fastening member (48a).

[0098] The first lower washer (48h) may be located on the lower side of the first lower bushing (48g) and may be penetrated by the first fastening member (48a). The first lower washer (48h) may have a ring shape.

[0099] The first lower fixing washer (48c) may be positioned opposite the first lower bushing (48g) to the first lower washer (48h) and may be penetrated by the first fastening member (48a). The first lower fixing washer (48c) may be fixed to the inside of the lower arm body (52). For example, the first lower fixing washer (48c) may be a toothed lock washer. The teeth (48ct, tooth) of the first lower fixing washer (48c) may be inserted and coupled into a groove (not shown) formed on the inside of the lower arm body (52).

[0100] Accordingly, the first body (480) can rotate relative to the first fastening member (48a). That is, the first fastening member (48a) can provide a first swivel axis. In addition, due to the elastic force of the aforementioned first disc spring (48d), the head (10) can maintain a certain swivel angle unless an external force exceeding a certain level is applied.

[0101] Meanwhile, the first groove (48g) may be formed along the circumferential direction of the first body (480) on the side of the first body (480). The first groove (48g) may face inward toward the front groove (50g1). The first projection (511) may protrude from the front groove (50g1) toward the first groove (48g) and may be inserted into the first groove (48g). The length of the first projection (511) may be smaller than the length of the first groove (48g). That is, when the first body (480) rotates relative to the first fastening member (48a), the first projection (511) may move relatively along the first groove (48g). The rotation of the first body (480) may be limited by one end or the other end of the first groove (48g) being caught on the first projection (511).

[0102] Accordingly, the maximum angle at which the head (10) can rotate left and right can be determined according to the length of the first groove (48g).

[0103] Referring to FIGS. 15 and 17, the second rotation unit (68) may include a second body (680), a second fastening member (68a), a second lower fixing washer (68b), a second disc spring (68d), a second lower washer (68e), a second lower bushing (68f), a second upper bushing (68g), a second upper washer (68h), and a second upper fixing washer (68c). The second rotation unit (68) may be referred to as a second swivel unit (68) or a second swivel module (68).

[0104] The second body (680) may be open vertically. The second body (680) may have a donut shape overall. The second body (680) may be connected to the vertical member (61) through the second connecting part (611). For example, the second body (680), the second connecting part (611), and the vertical member (61) may be formed as one body. The second body (680) may be inserted into the rear groove (50g2).

[0105] The second fastening member (68a) may be extended in a vertical direction. The second fastening member (68a) may be inserted into the arm (50) through the lower insertion hole (52b, see FIG. 14) and may pass through the hole (680h) formed in the center of the second body (680). The head (68ah) of the second fastening member (68a) may be located on the inner side of the lower arm body (52). The second fastening member (68a) may be screw-coupled to the upper fastening hole (51b, see FIG. 14).

[0106] The second lower fixing washer (68b) may be located on the upper side of the head (68ah) of the second fastening member (68a) and may be penetrated by the second fastening member (68a). The second lower fixing washer (68b) may be fixed to the inner side of the lower arm body (52). For example, the second lower fixing washer (68b) may be a toothed lock washer. The teeth (68bt, tooth) of the second lower fixing washer (68b) may be inserted and coupled into a groove (not shown) formed on the inner side of the lower arm body (52).

[0107] The second disc spring (68d) may be located on the upper side of the second lower fixing washer (68b). The second disc spring (68d) may have elasticity and may be convex toward the second lower fixing washer (68b). The second disc spring (68d) may generate an elastic force in the axial direction of the second fastening member (68a).

[0108] The second lower washer (68e) may be located on the upper side of the second disc spring (68d) and may be penetrated by the second fastening member (68a). The second lower washer (68e) may have a ring shape.

[0109] The second lower bushing (68f) may be opposed to the second disc spring (68d) with respect to the second lower washer (68e). The second fastening member (68a) may penetrate the second lower bushing (68f). The second lower bushing (68f) may have a cylindrical shape with a flange (not shown) formed at the bottom. The flange of the second lower bushing (68f) may come into contact with the second lower groove (680a) formed along the hole (680h) on the lower surface of the second body (680). A part (not labeled) of the second lower bushing (68f) may be inserted into a hole (680h) of the second body (680), may be positioned between the inner surface of the second body (680) and the outer surface of the second fastening member (68a), and may come into contact with the inner surface of the second body (680) and the outer surface of the second fastening member (68a).

[0110] The second upper bushing (68g) may be positioned opposite the second lower bushing (68f) and may be spaced upward from the second lower bushing (68f). The second fastening member (68a) may penetrate the second upper bushing (68g). The second upper bushing (68g) may have a cylindrical shape with a flange (not shown) formed at the top. The flange of the second upper bushing (68g) may come into contact with the second upper groove (680b) formed along the hole (680h) on the upper surface of the second body (680). A portion (not labeled) of the second upper bushing (68g) may be inserted into a hole (680h) of the second body (680), may be positioned between the inner surface of the second body (680) and the outer surface of the second fastening member (68a), and may come into contact with the inner surface of the second body (680) and the outer surface of the second fastening member (68a).

[0111] The second upper washer (68h) may be located on the upper side of the second upper bushing (68g) and may be penetrated by the second fastening member (68a). The second upper washer (68h) may have a ring shape.

[0112] The second upper fixing washer (68c) may be positioned opposite the second upper bushing (68g) to the second upper washer (68h) and may be penetrated by the second fastening member (68a). The second upper fixing washer (68c) may be fixed to the inside of the upper arm body (51). For example, the second upper fixing washer (68c) may be a toothed lock washer. The teeth (68ct, tooth) of the second upper fixing washer (68c) may be inserted and coupled into a groove (not shown) formed on the inside of the upper arm body (51).

[0113] Accordingly, the second body (680) can rotate relative to the second fastening member (68a). That is, the second fastening member (68a) can provide a second swivel axis. In addition, due to the elastic force of the aforementioned second disc spring (68d), the head (10) can maintain a certain swivel angle unless an external force exceeding a certain level is applied.

[0114] Meanwhile, the second groove (68g) may be formed along the circumferential direction of the second body (680) on the side of the second body (680). The second groove (68g) may face inward toward the rear groove (50g2). The second projection (512) may protrude from the rear groove (50g2) toward the second groove (68g) and may be inserted into the second groove (68g). The length of the second projection (512) may be smaller than the length of the second groove (68g). That is, when the second body (680) rotates relative to the second fastening member (68a), the second projection (512) may move relatively along the second groove (68g). The rotation of the second body (680) may be limited by one end or the other end of the second groove (68g) being caught on the second projection (512).

[0115] Accordingly, the maximum angle at which the head (10) can rotate left and right can be determined according to the length of the second groove (68g).

[0116] Referring to FIG. 18, the arm (50) can be extended in a direction that intersects the head (10) and the pole (30). The arm (50) can connect the articulated connector (40) and the lifting module (60). The second rotation unit (68) of the lifting module (60) and the vertical member (61) can be connected through a second connecting part (611). The second connecting part (611) can penetrate the pole (30).

[0117] The vertical member (61) may extend along the longitudinal direction of the pole (30). The vertical member (61) may be accommodated inside the pole (30). The partition wall (61w) may be adjacent to the top of the vertical member (61).

[0118] The pole (30) can be extended in a vertical direction and can surround a vertical member (61). Multiple ribs (30a, 30b, 30c, 30d) can be located between the pole (30) and the vertical member (61) and can be spaced apart from each other in the circumferential direction of the pole (30). The first rib (30a), the second rib (30b), the third rib (30c), and the fourth rib (30d) can be located at the vertices of any square inside the pole (30).

[0119] And, the lower end (31) of the pole (30) can be inserted and coupled into a port (21) formed on the upper surface of the base (20). For example, the port (21) may have a monticule shape.

[0120] Referring to FIGS. 19 and 20, the vertical member (61) may have a cylinder shape that is cut in half overall. The rear and lower sides of the vertical member (61) may be open, and the upper side may be blocked by a partition wall (61w).

[0121] The upper shaft (62) may extend along the longitudinal direction of the vertical member (61). The upper shaft (62) may have a cylindrical shape with the upper end closed. At least a portion of the upper shaft (62) may be received inside the vertical member (61). A protrusion (62a) may protrude upward from the upper side of the upper shaft (62) and may penetrate the partition wall (61w). A fastening member (62b), such as a nut, may be screw-coupled to the protrusion (62a) on the partition wall (61w). Accordingly, the upper shaft (62) may be detachably coupled to the vertical member (61).

[0122] The cap (69T) can be fitted onto the top of the vertical member (61) and can be flat. The mount (69M) can be positioned on the cap (69T) and can be fastened to a plurality of ribs (30a, 30b, 30c, 30d, see FIG. 18) via a vertical fastening member (69F1). The handle body (39a) of the handle (39) can be positioned opposite the cap (69T) to the mount (69M) and can be fastened to the mount (69M) via a horizontal fastening member (69F2). The handle body (39a) can have a track shape overall and can be covered by a handle cover (39b, see FIG. 2).

[0123] Referring to FIG. 21, the stem (63s) can be extended in a vertical direction and aligned with a vertical member (61). The lower end of the stem (63s) can be inserted into a port (21) of the base (20).

[0124] The gas spring (62, 63) may include the aforementioned upper shaft (62) and a lower shaft (63) connected to the upper shaft (62) from top to bottom. The lower shaft (63) may extend along the longitudinal direction of the upper shaft (62) and may have a smaller diameter than the upper shaft (62). That is, the lower shaft (63) may be inserted into the inner side of the upper shaft (62). The lower end of the lower shaft (63) may be fixed on a stem (63s).

[0125] The clamps (64, 65) may be positioned opposite the vertical member (61) with respect to the upper shaft (62). In other words, the upper shaft (62) may be positioned between the vertical member (61) and the clamps (64, 65). For example, the clamps (64, 65) may be provided in multiple numbers. For example, the first clamp (64) and the second clamp (65) may be spaced apart from each other in the vertical direction.

[0126] The first clamp (64) may include a first semi-cylinder (640), a first left flange (641), and a first right flange (642). The first semi-cylinder (640) may contact the outer circumference of the upper shaft (62). The first left flange (641) may extend to the left from one side of the first semi-cylinder (640) and may be coupled to a first part (61s1) of the vertical member (61) via a fastening member (64F). The first right flange (642) may extend to the right from the other side of the first semi-cylinder (640) and may be coupled to a second part (61s2) of the vertical member (61) via a fastening member (not shown).

[0127] The second clamp (65) may include a second semi-cylinder (650), a second left flange (651), and a second right flange (652). The second semi-cylinder (650) may contact the outer circumference of the upper shaft (62). The second left flange (651) may extend to the left from one side of the second semi-cylinder (650) and may be coupled to the third part (65s1) of the vertical member (61) via a fastening member (65F). The second right flange (652) may extend to the right from the other side of the second semi-cylinder (640) and may be coupled to the fourth part (not shown) of the vertical member (61) via a fastening member (not shown).

[0128] Accordingly, the upper shaft (62) can be detachably coupled to the vertical member (61). Also, the upper shaft (62) can move up or down along the lower shaft (63).

[0129] Referring to FIGS. 21 and 22, rollers (66a, 66b, 67a, 67b) may be adjacent to clamps (64, 65). For example, the first rollers (66a, 66b) may be adjacent to the first clamp (64), and the second rollers (67a, 67b) may be adjacent to the second clamp (65).

[0130] The first roller (66a, 66b) may include a first left roller (66a) and a first right roller (66b). The body (66a1a) of the first left pin (66a1) may penetrate the first left roller (66a) and the left portion (61L) of the vertical member (61). The flange (66a1b) of the first left pin (66a1) may be located between the first left roller (66a) and the left portion (61L). The first left roller (66a) may be connected to the left portion (61L) through the first left pin (66a1). The body (66b1a) of the first right pin (66b1) may penetrate the first right roller (66b) and the right portion (61R) of the vertical member (61). The flange (66b1b) of the first right pin (66b1) can be positioned between the first right roller (66b) and the right portion (61R). Accordingly, the first right roller (66b) can be connected to the right portion (61R) through the first right pin (66b1).

[0131] For example, the second roller (67a, 67b) may have the same shape as the first roller (66a, 66b). That is, the description above regarding the first roller (66a, 66b) may be applied in the same way to the second roller (67a, 67b). Accordingly, the second left roller (67a) may be connected to the left side (61L), and the second right roller (67b) may be connected to the right side (61R).

[0132] Additionally, the left roller (66a, 67a) may be positioned between the third rib (30c) and the fourth rib (30d) and may come into contact with the third rib (30c) and the fourth rib (30d). The right roller (66b, 67b) may be positioned between the first rib (30a) and the second rib (30b) and may come into contact with the first rib (30a) and the second rib (30b). For example, the roller (66a, 66b, 67a, 67b) may be provided with an oil groove through which a fluid such as oil flows. For example, the roller (66a, 66b, 67a, 67b) may be made of POM (Poly Oxy Methylene) material.

[0133] Accordingly, the vertical member (61) can smoothly rise or fall inside the pole (30) by means of the rollers (66a, 66b, 67a, 67b).

[0134] Referring to FIGS. 21 and 23, the first left flange (641) of the first clamp (64) may be located between the third rib (30c) and the fourth rib (30d). The first right flange (642) of the first clamp (64) may be located between the first rib (30a) and the second rib (30b). The first clamp (64) may include a first center protrusion (64a), a first left protrusion (64b), and a first right protrusion (64c).

[0135] The first center protrusion (64a) can protrude from the first semi-cylinder (650) toward the inside of the pole (30) and can come into contact with the inside of the pole (30). For example, a plurality of first center protrusions (64a) can be spaced apart from each other and can be parallel to each other. The first left protrusion (64b) can protrude from the first left flange (641) toward the third rib (30c) and can come into contact with the third rib (30c). The first right protrusion (64c) can protrude from the first right flange (642) toward the second rib (30b) and can come into contact with the second rib (30b). Accordingly, the first center protrusion (64a), the first left protrusion (64b), and the first right protrusion (64c) can cause friction between the vertical member (61) and the pole (30).

[0136] For example, the second clamp (65) may be spaced downward from the first clamp (64) and may have the same shape as the first clamp (64). That is, the above description regarding the first clamp (64) may be applied equally to the second clamp (65). Accordingly, the second center protrusion (65a), the second left protrusion (65b), and the second right protrusion (65c) of the second clamp (65) may cause friction between the vertical member (61) and the pole (30).

[0137] Accordingly, the position (height) of the vertical member (61) relative to the base (20) can be maintained at a constant level by the frictional force between the protrusions (64a, 64b, 64c, 65a, 65b, 65c) and the pole (30) unless an external force exceeding a certain level is applied.

[0138] Meanwhile, the lengths of the left protrusions (64b, 65b) and the right protrusions (64c, 65c) may be smaller than the length of the center protrusions (64a, 65a). Thus, the pole (30) can be provided with multiple ribs (30a, 30b, 30c, 30d), and sufficient rigidity of the pole (30) can be secured.

[0139] Referring again to FIGS. 22 and 23, the cable groove (61g) can be formed in the front portion (61F) of the vertical member (61) and can be formed vertically. The cable (C) can be inserted into the cable groove (61g). The cable (C) can be arranged along the cable groove (50c, see FIG. 14) of the arm (50) and can be electrically connected to the head (10). Also, the cable (C) can be arranged along the stem (63s, see FIG. 21) and can be electrically connected to an electronic component, such as a battery (Bt, see FIG. 1), placed inside the base (20).

[0140] Referring to FIG. 24, the head (10) can be spaced upward from the base (20). The user can pivot the head (10). At this time, the pivot axis may pass through the center of the head (10) and be orthogonal to the head (10). Referring to the left side of FIG. 24, the head (10) can be placed in a horizontal mode. Referring to the right side of FIG. 24, the head (10) can be placed in a vertical mode.

[0141] Referring to FIG. 25, the user can tilt the head (10). At this time, the tilt axis may be a horizontal axis located behind the center of the head (10) and parallel to the head (10). The user can swivel the head (10). At this time, the first swivel axis may be a vertical axis adjacent to one end of the arm (50). Alternatively, the second swivel axis may be a vertical axis adjacent to the other end of the arm (50). The user can raise or lower the head (10) from the pole (30). At this time, the minimum height and maximum height of the head (10) may be formed by the arm (50) being caught in a hole (30hh) formed in the pole (30).

[0142] The pivot, tilt, swivel, and elevating movements of the head (10) described above can be implemented independently of each other. For example, the head (10) can be pivoted within a range of +90 degrees to -90 degrees. For example, the head (10) can be tilted within a range of +25 degrees to -25 degrees. For example, the head (10) can be swiveled within a range of +65 degrees to -65 degrees. For example, the head (10) can be positioned 1,065 to 1,265 mm from the base (20) or the ground, based on horizontal mode.

[0143] Referring to FIG. 26, the cradle (90) may include a front part (91), a middle part (92), and a rear part (93). The middle part (92) may be located behind the front part (91) and may be coupled to the front part (91). The rear part (93) may be opposite the front part (91) with respect to the middle part (92) and may be coupled to the middle part (92).

[0144] Referring to FIGS. 27 and 28, the front part (91) may include a first part (91a), a second part (91b), and a third part (91c). The front of the first part (91a) may have a shape corresponding to the rear of the back cover (15, see FIG. 2) that is adjacent to the circumference of the back cover (15). The front of the first part (91a) may be curved. The second part (91b) may be bent forward from the top of the first part (91a). The angle between the second part (91b) and the first part (91a) may be obtuse. The third part (91c) may be bent downward from the front end of the second part (91b). The angle between the third part (91c) and the second part (91b) may be a right angle or slightly greater than 90 degrees. Accordingly, the first part (91a) may have a shape in which a portion of the upper part of the curved disc is cut off, and the second part (91b) and the third part (91c) may have a hook shape overall.

[0145] At least one magnet (91M) can be coupled to the first part (91a). For example, the first magnet (91M1), the second magnet (91M2), and the third magnet (91M3) can be seated in a groove formed on the rear surface of the first part (91a). Preferably, a plurality of magnets (91M1, 91M2, 91M3) can be symmetrically arranged in the first part (91a).

[0146] The support member (91V) may be adjacent to the top of the first part (91) and may protrude rearward from the rear of the first part (91). The support member (91V) may extend in the left-right direction. The left fixing pin (91P1) may be fixed to one end of the support member (91V), and the right fixing pin (91P2) may be fixed to the other end of the support member (91V). The reinforcing member (91S1) may have a hook shape and may be inserted into the interior of the support member (91V). For example, a single reinforcing member (91S1) may extend long in the left-right direction along the support member (91V). As another example, one of a pair of reinforcing members (91S1) may be adjacent to the left fixing pin (91P1), and the other may be adjacent to the right fixing pin (91P2).

[0147] Referring to FIG. 29, the middle part (92) can be seated on the rear surface of the first part (91a). The middle part (92) may have a shape corresponding to the first part (91a) and may be penetrated by a support member (91V). At this time, the left fixing pin (91P1, see FIG. 28) may be inserted into one side of the middle part (92), and the right fixing pin (91P2, see FIG. 28) may be inserted into the other side of the middle part (92). Accordingly, the middle part (92) can be coupled to the front part (91). Meanwhile, the first left cover pin (92P1) may be aligned with the left fixing pin (91P1) and may close the hole formed on one side of the middle part (92). Additionally, the first right cover pin (92P2) can be aligned with the right fixing pin (91P2) and can close the hole formed on the other side of the middle part (92).

[0148] The shaft holders (92A, 92B) may protrude rearward from the lower part of the middle part (92). For example, the shaft holders (92A, 92B) may include a first shaft holder (92A) and a second shaft holder (92B) that are spaced apart from each other in the left and right directions.

[0149] The first shaft holder (92A) may include a first insertion part (92a1) having a first insertion hole (92a2) and a first fixing part (92a3) having a first fixing hole (92a4). A first fixing member (92a5), such as a nut, may be fixed to the inside of the first fixing part (92a3) and may be aligned with the first fixing hole (92a4) and the first insertion hole (92a2).

[0150] The second shaft holder (92B) may include a second insertion part (92b1) having a second insertion hole (92b2) and a second fixing part (92b3) having a second fixing hole (92b4). A second fixing member (92b5), such as a nut, may be fixed to the inside of the second fixing part (92b3) and may be aligned with the second fixing hole (92b4) and the second insertion hole (92b2).

[0151] For example, the second axis holder (92B) and the first axis holder (92A) can be symmetrical.

[0152] The fixing pins (92S1, 92S2) may protrude rearward from the lower part of the middle part (92). The fixing pins (92S1, 92S2) may be adjacent to the shaft holders (92A, 92B). For example, the fixing pins (92S1, 92S2) may include a first fixing pin (92S1) and a second fixing pin (92S2) that are spaced apart from each other in the left and right directions.

[0153] The first fixing pin (92S1) may be adjacent to the first shaft holder (92A) and may protrude rearward from the rear of the middle part (92). The second fixing pin (92S2) may be adjacent to the second shaft holder (92B) and may protrude rearward from the rear of the middle part (92). For example, the second fixing pin (92S2) may have the same shape as the first fixing pin (92S1).

[0154] Referring to FIGS. 29 and 30, the rear part (93) may be located behind the middle part (92) and may face the middle part (92).

[0155] The leaf (93A, 93B) may protrude from the lower part of the rear part (93) toward the middle part (92). The leaf (93A, 93B) may be positioned between the insertion part (92a1, 92b1) and the fixing part (92a3, 92b3) of the shaft holder (92A, 92B). A fastening member (93F1, 93F2), such as a bolt, may penetrate the insertion part (92a1, 92b1), the leaf (93A, 93B), and the fixing part (92a3, 92b3), and may be fastened to the fixing member (92a5, 92b5). For example, the leaf (93A, 93B) may include a first leaf (93A) that is penetrated by a first fastening member (93F1) between a first insertion part (92a1) and a first fixing part (92a3), and a second leaf (93B) that is penetrated by a second fastening member (93F2) between a second insertion part (92b1) and a second fixing part (92b3).

[0156] Accordingly, the rear part (93) can rotate with respect to the fastening members (93F1, 93F2). That is, the fastening members (93F1, 93F2) can provide a hinge axis for the rear part (93).

[0157] The elastic members (93S1, 93S2) may have elasticity and may extend in the longitudinal direction of the fixing pins (92S1, 92S2). The fixing pins (92S1, 92S2) may be inserted into the elastic members (93S1, 93S2). One end of the elastic members (93S1, 93S2) may be fixed to the middle part (92), and the other end of the elastic members (93S1, 93S2) may be fixed to the rear part (93). For example, the elastic members (93S1, 93S2) may be springs. For example, the elastic member (93S1) may include a first elastic member (93S1) wound around the outer circumference of the first fixing pin (92S1) and a second elastic member (93S2) wound around the outer circumference of the second fixing pin (92S2).

[0158] Meanwhile, the left side (93L) of the rear part (93) may have a first hole through which a first fastening member (93F1) passes, and a first cover pin (93P1) may close the hole. Also, the right side (93R) of the rear part (93) may have a second hole through which a second fastening member (93F2) passes, and a second cover pin (not shown) may close the second hole.

[0159] Referring to FIGS. 26 and 31, when the rear part (93) rotates clockwise about the aforementioned hinge axes (93F1, 93F2) due to an external force applied to the rear part (93), the elastic members (93S1, 93S2) can be compressed and elastically deformed. That is, when the external force applied to the rear part (93) is released, the elastic members (93S1, 93S2) can be extended and restored, and the rear part (93) can rotate counterclockwise about the aforementioned hinge axes (93F1, 93F2) by the elastic force of the elastic members (93S1, 93S2).

[0160] Referring to FIG. 26, in the initial state of the cradle (90), the upper part of the rear part (93) may be in contact with or adjacent to the middle part (92).

[0161] Referring to FIG. 31, the user can rotate the rear part (93) clockwise about the aforementioned hinge axis (93F1, 93F1) and insert a terminal (Mo), such as a smartphone, between the middle part (92) and the rear part (93). At this time, the rear part (93) can press the terminal (Mo) against the middle part (92) by the elastic force of the elastic members (93S1, 93S2). Accordingly, the terminal (Mo) can be stably fixed to the cradle (90).

[0162] Meanwhile, the middle pad (92V) may protrude backward from the rear of the middle part (92). Also, the rear pad (93V) may protrude forward from the rear part (93). Pads (92V, 93V) made of cushioning material such as rubber or silicone can mitigate impact applied to the terminal (Mo) or minimize scratches on the terminal (Mo) caused by the cradle (90).

[0163] Referring again to FIGS. 1 and 2, the hooks (91b, 91c) of the cradle (90) can be hooked onto the end frame (14). Specifically, the third part (91c) of the front part (91) can be hooked onto the horizontal portion (14H, see FIG. 3) of the end frame (14), the second part (91b) can be positioned on the vertical portion (14V, see FIG. 3) of the end frame (14), and the first part (91a) can be positioned on the rear surface of the back cover (15). Accordingly, the cradle (90) can be detachably coupled around the head (10).

[0164] Referring to FIG. 32, the cradle (90) can be attached at any point on the circumference of the head (10). Additionally, the cradle (90) can be attached more strongly to the head (10) using the magnetic force of the aforementioned magnet (91M, see FIG. 27). For example, the position where the cradle (90) is attached to the head (10) using the above magnetic force may correspond to the position of the plate (16) described later.

[0165] At least one plate (16) may be positioned between the frame (13, see FIG. 3) and the back cover (15) and may be coupled to the frame (13) and / or the back cover (15). The plate (16) may be a magnetic substance such as iron (Fe). The plate (16) may be formed flat or curved along the curvature of the first part (91a, see FIG. 28) of the cradle (90). For example, the plate (16) may be provided in multiple numbers.

[0166] The first plate (16a) and the second plate (16b) may be adjacent to the upper side of the head (10) and may be spaced apart from each other in the left and right directions. For example, the first plate (16a) may be located to the left of a vertical line (VL) passing through the center (O) of the head (10), and the second plate (16b) may be located to the right of the vertical line (VL). The third plate (16c) may be adjacent to the left side of the head (10), and the fourth plate (16d) may be adjacent to the right side of the head (10). For example, the third plate (16c) and the fourth plate (16d) may be located on a horizontal line (HL) passing through the center (O) of the head (10), or may be slightly offset upward or downward from it.

[0167] Accordingly, at the position of the plate (16), the cradle (90) can be more strongly coupled to the head (10) by the magnetic attraction between the magnet (91M, see FIG. 27) and the plate (16).

[0168] Meanwhile, a gyro sensor (17) may be mounted on the frame (13) between the frame (13) and the back cover (15). For example, the display device may have one gyro sensor (17). For example, the gyro sensor (17) may be positioned away from the vertical line (VL) and the horizontal line (HL). As another example, the display device may have multiple gyro sensors (17). The sensing value of the gyro sensor (17) may vary according to the pivot angle of the head (10). Accordingly, the gyro sensor (17) can detect the pivot of the head (10) and the mode of the head (10) (e.g., landscape mode or portrait mode).

[0169] Referring to FIGS. 33 and 34, the control unit of the display device can detect the horizontal mode (see left figure of FIG. 34) or vertical mode (see right figure of FIG. 34) of the head (10) based on information obtained from the gyroscope sensor (17, see FIG. 32) (S10).

[0170] The above control unit can adjust the aspect ratio of the image to match the horizontal or vertical mode of the head (10) and output the image through the display panel (11) (S11).

[0171] Referring to FIG. 35, the control unit (C0) of the display device can control the operation of the display device. The control unit (C0) can be electrically connected to the components of the display device.

[0172] The display panel (11), main board (Mb), power supply board (Pu), and T-CON board (Tc, Timing Controller board) can be electrically connected to the control unit (C0). The main board (Mb), power supply board (Pu), and T-CON board (Tc) can be mounted on the rear of the frame (13, see FIG. 3). The main board (Mb) can control the display device. The control unit (C0) may be implemented as the main board (MB) or may be a higher-level control unit that controls the main board (Mb), etc. The power supply board (Pu) can receive power from a battery (Bt, see FIG. 1) and / or an external power source via a cable and can provide power to each component of the display device. The T-CON board (Tc) can provide a video signal to the display panel (110).

[0173] The speaker (SPK) can be electrically connected to the control unit (C0). The speaker (SPK) can be installed on the head (10), pole (30), arm (50), and / or base (20) and can provide sound.

[0174] The gyro sensor (17) can be electrically connected to the control unit (C0).

[0175] The communication unit (Cm) may include a Near Field Communication (NFC) module (N1) and / or a Wi-Fi module (N2). The NFC module (N1, see FIG. 13) may be mounted on the frame (13) between the frame (13) and the back cover (15) and may be adjacent to the right and bottom sides of the head (10). A user can connect the head (10) and the terminal (Mo) by tagging the terminal to the NFC module (N1). The Wi-Fi module (N2, see FIG. 13) may be mounted on the frame (13) between the frame (13) and the back cover (15) and may be adjacent to the top side of the head (10). The head (10) can connect to a network through the Wi-Fi module (N2).

[0176] The input unit (Pm) can be electrically connected to the control unit (C0). The user can input commands or signals to the control unit (C0) through the input unit (Pm). For example, the input unit (Pm) may be a button (Bu), a display panel (11), and / or a microphone (Mc). The button (Bu, see FIG. 32) may be mounted on the frame (13) between the frame (13) and the back cover (15), and may be adjacent to the left and bottom sides of the head (10). The user can control the head (10) by operating the button (Bu). The display panel (11) may be implemented as a touch panel, and the user can control the display device by touching the display panel (11). The microphone (Mc) may be installed on the display device, and the user can control the display device by inputting voice into the microphone (Mc). For example, the input unit (Pm) may be a remote controller (Rc) operated by a user and communicating with a display device, or an application (App) installed on a user's terminal (smartphone) and communicating with a display device.

[0177] Referring to FIGS. 35 and 36, the motor (410) can be coupled to the rear of the frame (13) via a motor mount (410a). The motor (410) may be a motor capable of adjusting the rotation direction, rotation angle, and rotation speed. The motor (410) may be a stepper motor.

[0178] The worm (413) can be fixed to the rotation axis (411) of the motor (410) through a coupling member (412) and can rotate together with the rotation axis (411). The worm wheel (414) can engage with the screw threads formed on the outer surface of the worm (413). The rotation axis of the worm (413) can be aligned in the left-right direction, and the rotation axis of the worm wheel (414) can be aligned in the up-down direction.

[0179] The drive shaft (44s) of the pivot shaft (44) may be positioned opposite the body (44b) to the head (44a) and may be fixed to the worm wheel (414).

[0180] Accordingly, when the motor (410) is driven, the pivot shaft (44) can rotate in a first rotational direction or a second rotational direction opposite to the first rotational direction. That is, the head (10, see FIG. 24) can be pivoted automatically.

[0181] The disc indicator (418) may be adjacent to the end of the worm (413) and may be fixed to the end of the worm (413). The disc indicator (418) may include a plurality of holes (not shown) spaced apart from each other in the circumferential direction of the disc indicator (418).

[0182] The rotation sensor (419) may be adjacent to the disc indicator (418) and may be fixed to one side of the gearbox (410b) mounted on the frame (13) while accommodating the worm (413) and the worm wheel (414). The rotation sensor (419) may have a horseshoe shape. The light-emitting part and the light-receiving part of the rotation sensor (419) may face each other but be spaced apart from each other. The disc indicator (418) may rotate and pass between the light-emitting part and the light-receiving part according to the rotation of the worm (413). In response to the rotation of the disc indicator (418), the light from the light-emitting part may pass through the hole of the disc indicator (418) or be blocked by the disc indicator (418).

[0183] Accordingly, the rotation sensor (419) can detect the number of rotations and / or amount of rotation of the motor (410).

[0184] The aforementioned motor (410) and rotation sensor (419) can be electrically connected to a control unit (C0). That is, the control unit (C0) can control the pivot of the head (10, see FIG. 24) by controlling the operation of the motor (410) based on information obtained from the rotation sensor (419).

[0185] Referring to FIGS. 37 and 38, the user's terminal (Mo) can communicate with the head (10) through a communication unit (Cm, see FIG. 35). That is, the user can tag the terminal (Mo) to an NFC module (N1, see FIG. 35) or connect the head (10) to a network through a Wi-Fi module (N2) to mirror the screen of the terminal (Mo) to the head (10) (S20).

[0186] The control unit (C0) can identify the horizontal mode or vertical mode of the terminal (Mo) based on information obtained from the terminal (Mo) through the communication unit (Cm) (S21).

[0187] The control unit (C0) can pivot the head (10) according to the horizontal mode or vertical mode of the terminal (Mo) (S22). If the terminal (Mo) is in horizontal mode, the control unit (C0) can pivot the head (10) to horizontal mode by adjusting the rotation of the motor (410, see FIG. 36) (see left figure of FIG. 38). If the terminal (Mo) is in vertical mode, the control unit (C0) can pivot the head (10) to vertical mode by adjusting the rotation of the motor (410, see FIG. 36) (see right figure of FIG. 38).

[0188] The control unit (C0) can adjust the aspect ratio of the image to match the horizontal or vertical mode of the head (10) and output the image through the display panel (11) (S23).

[0189] Referring to FIGS. 39 to 41, the control unit (C0) can recognize a terminal (Mo) mounted on a head (10) using a cradle (90) based on information obtained from a gyroscope sensor (16, see FIG. 32) (S30). The display panel of the terminal (Mo) may be provided on the front of the terminal (Mo), and the camera (Mv) of the terminal (Mo) may be provided on the rear of the terminal (Mo).

[0190] The control unit (C0) can identify the position of the terminal (Mo) mounted on the head (10) based on information obtained from the gyroscope sensor (16) (S31).

[0191] The control unit (C0) can pivot the head (10) according to the position of the identified terminal (Mo) (S32).

[0192] Referring to FIG. 40 (a), when the terminal (Mo) is at a position (P1) corresponding to the fourth plate (16d) in the horizontal mode of the head (10), the control unit (C0) can switch from horizontal mode to vertical mode by rotating the head (10) 90 degrees clockwise. When the terminal (Mo) is at a position (P4) corresponding to the third plate (16c), the control unit (C0) can switch from horizontal mode to vertical mode by rotating the head (10) 90 degrees counterclockwise.

[0193] Additionally, in the horizontal mode of the head (10), if the terminal (Mo) is at a position (P2) corresponding to the second plate (16b) or a position (P3) corresponding to the first plate (16a), the control unit (C0) can maintain the horizontal mode of the head (10).

[0194] Referring to FIG. 40 (b), in the first vertical mode of the head (10), the first and second plates (16a, 16b) may be adjacent to the left side of the head (10). In the first vertical mode of the head (10), if the terminal (Mo) is at a position (Q1) corresponding to the second plate (16b) or a position (Q2) corresponding to the first plate (16a), the control unit (C0) may switch from the first vertical mode to the horizontal mode by rotating the head (10) 90 degrees counterclockwise.

[0195] Additionally, in the first vertical mode of the head (10), if the terminal (Mo) is at a position (Q3) corresponding to the fourth plate (16d), the control unit (C0) can maintain the first vertical mode of the head (10).

[0196] Additionally, in the first vertical mode of the head (10), if the terminal (Mo) is at a position (Q4) corresponding to the third plate (16c), the control unit (C0) can switch from the first vertical mode to the second vertical mode described later by rotating the head (10) 180 degrees counterclockwise.

[0197] Referring to FIG. 40 (c), in the second vertical mode of the head (10), the first and second plates (16a, 16b) may be adjacent to the right side of the head (10). In the second vertical mode of the head (10), if the terminal (Mo) is at a position (R1) corresponding to the first plate (16a) or a position (R2) corresponding to the second plate (16b), the control unit (C0) can switch from the second vertical mode to the horizontal mode by rotating the head (10) 90 degrees clockwise.

[0198] Additionally, in the second vertical mode of the head (10), if the terminal (Mo) is at a position (R3) corresponding to the third plate (16c), the control unit (C0) can maintain the second vertical mode of the head (10).

[0199] Additionally, in the second vertical mode of the head (10), if the terminal (Mo) is at a position (R4) corresponding to the fourth plate (16d), the control unit (C0) can switch from the second vertical mode to the first vertical mode by rotating the head (10) 180 degrees clockwise.

[0200] The control unit (C0) can adjust the aspect ratio of the image to match the horizontal or vertical mode of the head (10) and output the image through the display panel (11) (S33).

[0201] Referring to FIGS. 35 and 42, the wireless charging unit (19) may be located between the plate (16) and the back cover (15). The wireless charging unit (19) may be coupled to the frame (13, see FIG. 3) and / or the back cover (15). The wireless charging unit (19) may provide electrical energy wirelessly to an electronic device through an inductive coupling method or a resonant coupling method. This wireless charging unit (19) may receive power from a power supply board (Pu).

[0202] Inductive coupling utilizes the principle that if the current flowing through one of two adjacent coils is changed, the magnetic field changes due to that current, which in turn changes the magnetic flux passing through the other coil, thereby generating an induced electromotive force. In other words, without moving the two wires spatially, if only the current in one coil is changed while the two coils are placed close together, an induced electromotive force is generated in the other coil. In this case, frequency characteristics are not significantly affected, but power efficiency may be affected by the alignment and distance between the transmitting device (i.e., wireless charging unit) and the receiving device (i.e., terminal) containing each coil.

[0203] The resonance coupling method utilizes the principle that when a resonance frequency is applied to one of two coils separated by a certain distance, a portion of the resulting change in the magnetic field is applied to the other coil at the same resonance frequency, thereby generating an induced electromotive force. In other words, when the transmitting and receiving devices resonate at the same frequency, electromagnetic waves are transmitted through the near-field electromagnetic field; conversely, if the frequencies are different, there is no energy transfer. In this case, the selection of the frequency can be a critical issue. Furthermore, since there is no energy transfer between different resonance frequencies, the target device for charging can be selected by choosing the resonance frequency.

[0204] The wireless charging unit (19) may include a PCB (19a, Printed Circuit Board) and a coil (19b, coil) electrically connected to the PCB (19a). The coil (19b) can wirelessly charge a terminal (Mo) placed in the charging area (15A) of the back cover (15).

[0205] Accordingly, the terminal (Mo) can be mounted on the back cover (15) via the aforementioned cradle (90, see FIG. 2) and can be wirelessly charged facing the coil (19b) with respect to the charging area (15A). For example, each of the plurality of wireless charging parts (19) can be located on each of the plurality of plates (16a, 16b, 16c, 16d). That is, the display device can provide a plurality of wireless charging areas.

[0206] The aforementioned wireless charging unit (19) can be electrically connected to a control unit (C0). The control unit (C0) can identify the position of a terminal (Mo) mounted on a head (10) based on information obtained from a gyroscope sensor (16, see FIG. 32). When the control unit (C0) recognizes that the terminal (Mo) is mounted on the head (10) so as to overlap with the charging area (15A), it can operate the wireless charging unit (19). The control unit (C0) can operate only the wireless charging unit (19) corresponding to the position of the terminal (Mo) among the plurality of wireless charging units (19).

[0207] Referring to FIGS. 1 to 42, a display device according to one aspect of the present disclosure may comprise: a base; a head spaced apart from the base and having 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 the longitudinal direction of the pole; and an arm extending in a direction intersecting the head and the pole, one end of which is connected to the articulated connector and the other end of which is connected to the elevating module.

[0208] The above-described articulated connector may include: a pivot module that rotates around a pivot axis orthogonal to the head, and the pivot module may include: a front bracket fixed to the rear of the head; a rear bracket located at the rear of the front bracket and coupled to the arm; and a pivot shaft that penetrates the front bracket and the rear bracket, is fixed to the front bracket, and is rotatably coupled to the rear bracket, thereby providing the pivot axis.

[0209] The pivot module may include: a rear grab that faces the front bracket with respect to the rear bracket, is fixed to the rear bracket, and is rotatably coupled to the pivot shaft; a cap fixed to the end of the pivot shaft; and a disc spring located between the rear grab and the cap, to which the pivot shaft is rotatably coupled.

[0210] The above disc spring may further include: a first disc spring convex in the direction toward the cap from the rear grab; and a second disc spring located between the first disc spring and the cap, convex in the direction toward the rear grab from the cap.

[0211] The pivot module may further include: a disk located between the rear grab and the disk spring, to which the pivot shaft is fixed; the disk may include: a plurality of bosses that protrude from the disk toward the rear grab and are spaced apart from each other in the circumferential direction of the disk; and the rear grab may further include: a plurality of fixing holes having a size corresponding to the bosses and spaced apart from each other in the circumferential direction of the rear grab; and a plurality of slots that extend in the circumferential direction of the rear grab, are longer than the fixing holes, and are alternately arranged with the plurality of fixing holes.

[0212] The above-described articulated connector may include: a tilt module that rotates around a tilt axis extending horizontally and parallel to the head, and the tilt module may include: a rear bracket coupled to the rear of the head and rotatably coupled to the arm around the tilt axis; a tilt shaft that penetrates the rear bracket horizontally and is fixed to the rear bracket, wherein the tilt shaft provides the tilt axis; and an elastic member that is wound in a coil shape around the outer circumference of the tilt shaft and has one end that engages with the rear bracket.

[0213] The tilt module may further include at least one disc spring adjacent to the other end opposite to the one end of the elastic member, to which the tilt shaft is rotatably coupled, and which is convex toward the one end.

[0214] The tilt module may further include a holder to which the tilt shaft is rotatably coupled and which is coupled to the arm, and the holder may further include a pin protruding outwardly from the side of the holder, and the rear bracket may further include a guide groove in which the pin is located and which extends in an arc in the rotational direction of the rear bracket.

[0215] The above-described articulated connector may include: a first rotational unit that rotates around a first swivel axis extending vertically and parallel to the head, and the first rotational unit may include: a holder coupled to the rear surface of the head; a first body connected to the holder and having an opening vertically; and a first fastening member that penetrates the opening of the first body, is rotatably coupled to the first body, and is fixed to the arm, thereby providing the first swivel axis.

[0216] The first rotating unit may further include: a fixed washer adjacent to one end of the first fastening member, fixed to the inner side of the arm, through which the first fastening member passes; a disc spring facing the one end of the first fastening member with respect to the fixed washer, convex toward the fixed washer, through which the first fastening member passes; a washer facing the fixed washer with respect to the disc spring, through which the first fastening member passes; and a bushing facing the disc spring with respect to the washer, through which the first fastening member passes; wherein the bushing may further include a flange located on the first body and a part located in the opening of the first body.

[0217] The lifting module may include: a second rotating unit that rotates around a second swivel axis extending vertically and parallel to the pole, and the second rotating unit may include: a vertical member coupled to the pole; a second body connected to the vertical member and having an opening in the upper and lower directions; and a second fastening member that penetrates the opening of the second body, is rotatably coupled to the second body, and is fixed to the arm, and may include a second fastening member that provides the second swivel axis.

[0218] The lifting module may include: a vertical member located inside the pole, extending in the longitudinal direction of the pole, and coupled to the arm; a stem located between the vertical member and the base, coupled to the base, and extending in the longitudinal direction of the vertical member; a lower shaft fixed on the stem and extending in the longitudinal direction of the vertical member; and an upper shaft fixed inside the vertical member, extending in the longitudinal direction of the vertical member, and movable along the lower shaft.

[0219] The lifting module may further include: a roller coupled to one side of the vertical member and in contact with the inner surface of the pole; and a clamp coupled to the vertical member and facing the vertical member with respect to the upper shaft, and the clamp may include a protrusion that protrudes from the clamp toward the inner surface of the pole and in contact with the inner surface of the pole.

[0220] The display device may further include: a cradle that hangs on one side of the head, and a cradle having a magnet located inside the cradle; and the head may include: a back cover forming the rear surface of the head; and a plate facing the magnet with respect to the back cover; and the cradle may include: a front part where the magnet is located and contacts the back cover; a rear part located behind the front part; a rear part hinge-coupled to the front part with respect to a hinge axis between the front part and the rear part; and an elastic member located 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.

[0221] The display device may further include: a gyroscope sensor located on the head and detecting the coupling of the head and the cradle; and a control unit electrically connected to the gyroscope sensor, and the articulated connector may include: a pivot module that pivots together with the head; and the pivot module may include a motor and a power transmission member that transmits the power of the motor to the pivot axis of the pivot module, and the control unit may pivot the head based on information obtained from the gyroscope sensor.

[0222] The above display device may further include a wireless charging unit located between the plate and the back cover.

[0223] The above base may include a plurality of moving wheels coupled to the lower surface of the base.

[0224] Some or other embodiments of the present disclosure described above are not exclusive or distinct from one another. Some or other embodiments of the present disclosure described above may be used in combination or combined for their respective configurations or functions.

[0225] For example, this means that configuration A described in a specific embodiment and / or drawing and configuration B described in another embodiment and / or drawing can be combined. That is, even if the combination between configurations is not directly described, it means that combination is possible, except in cases where it is described that combination is impossible.

[0226] The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

Claims

Claim 1 A base; a head spaced apart from the base and including a display panel; a pole extending from the base toward the head; an articulated connector coupled to the head; a lifting module coupled to the pole so as to be movable along the longitudinal direction of the pole; and an arm, one end of which is connected to the articulated connector and the other end of which is connected to the lifting module, wherein the articulated connector comprises: a front bracket coupled to the head at the rear of the head; a rear bracket rotatably connected to the front bracket by a pivot shaft; and a holder rotatably connected to the rear bracket by a tilt shaft. And, the assembly includes a rotating unit connecting one side of the arm and the holder, wherein the arm includes: a front groove formed on one side of the arm, the rotating unit is inserted into the front groove of the arm and rotates in the front groove, and an upper fixing washer disposed on the upper side of the front groove of the arm includes: a tooth formed on the edge of the upper fixing washer and inserted into and fixed to the arm; and a lower fixing washer disposed on the lower side of the front groove of the arm includes: a tooth formed on the edge of the lower fixing washer and inserted into and fixed to the arm; and a fastening member inserted into the front groove of the arm and the rotating unit to provide a swivel shaft includes: an upper bushing inserted into the upper fixing washer and the lower fixing washer and disposed on the upper side of the rotating unit;A display device further comprising a lower bushing disposed on the lower side of the rotating unit, wherein the upper bushing comprises: a flange formed at the top of the upper bushing and contacting the upper surface of the rotating unit, and the lower bushing comprises: a flange formed at the bottom of the lower bushing and contacting the lower surface of the rotating unit, wherein the upper bushing in contact with the rotating unit rotates with respect to the upper fixing washer fixed to the arm in the front groove, and the lower bushing in contact with the rotating unit rotates with respect to the lower fixing washer fixed to the arm in the front groove. Claim 2 A display device according to claim 1, wherein the first direction of the pivot shaft and the second direction of the tilt shaft intersect each other, and the third direction of the swivel shaft and the second direction of the tilt shaft intersect each other. Claim 3 In claim 2, the first direction of the pivot shaft and the third direction of the swivel shaft intersect each other in a display device. Claim 4 In claim 1, the fastening member is a display device penetrating the upper fixing washer, the rotating unit, and the lower fixing washer. Claim 5 In claim 4, the front groove is formed by the upper and lower sides of the arm with one side of the arm open in the left-right direction, and the fastening member is a display device that penetrates the upper and lower sides of the arm in the front groove. Claim 6 In claim 1, the articulated connector comprises: a coil spring wound around the tilt shaft, one end of the coil spring being supported by the holder, and the other end of the coil spring being supported by the rear bracket, for a display device. Claim 7 A display device according to claim 6, wherein the rear bracket includes a seating portion that bends from the edge of the rear bracket, one end of the coil spring is fixed to the holder, the other end of the coil spring contacts the seating portion, and the coil spring provides elastic force to the holder or the rear bracket. Claim 8 In claim 1, the rotation unit is formed in a circular shape, and the front groove is formed in a shape corresponding to the rotation unit so that the rotation unit is inserted therein, and either the rotation unit or the front groove includes a rotation unit groove formed along the circumferential direction of the rotation unit, and the other of the rotation unit or the front groove includes a projection inserted into the rotation unit groove, and the rotation unit groove is a display device that restricts the movement of the projection. Claim 9 delete Claim 10 In claim 1, the above is a display device located in the radial direction of the swivel shaft provided by the fastening member. Claim 11 In claim 1, one side of the arm comprises: an upper arm body; and a lower arm body facing the upper arm body and spaced apart from the upper arm body, the front groove is located between the upper arm body and the lower arm body, and the rotation unit is a display device inserted into the front groove between the upper arm body and the lower arm body. Claim 12 In claim 11, the fastening member comprises: a fastening member head facing the upper fixing washer or the lower fixing washer, and the teeth of the upper fixing washer or the teeth of the lower fixing washer are a display device located around the fastening member head in the radial direction of the swivel shaft of the fastening member. Claim 13 In claim 12, the above is a display device inserted into a groove formed in the upper arm body or the lower arm body around the head of the fastening member. Claim 14 A base; a head spaced apart from the base and including a display panel; a pole extending from the base toward the head; an articulated connector coupled to the head; a lifting module coupled to the pole so as to be movable along the longitudinal direction of the pole; and an arm, one end of which is connected to the articulated connector and the other end of which is connected to the lifting module, wherein the articulated connector comprises: a front bracket coupled to the head at the rear of the head; a rear bracket rotatably connected to the front bracket by a pivot shaft; and a holder rotatably connected to the rear bracket by a tilt shaft. And, the assembly includes a rotating unit connecting one side of the arm and the holder, wherein the arm includes: a front groove formed on one side of the arm, the rotating unit is inserted into the front groove of the arm and rotates in the front groove, and an upper fixing washer disposed on the upper side of the front groove of the arm includes: a tooth formed on the edge of the upper fixing washer and inserted into and fixed to the arm; and a lower fixing washer disposed on the lower side of the front groove of the arm includes: a tooth formed on the edge of the lower fixing washer and inserted into and fixed to the arm; and a fastening member inserted into the front groove of the arm and the rotating unit to provide a swivel shaft includes: an upper bushing inserted into the upper fixing washer and the lower fixing washer and disposed on the upper side of the rotating unit; A display device further comprising a lower bushing disposed on the lower side of the rotating unit, wherein the upper bushing comprises a flange formed at the top of the upper bushing and contacting the upper surface of the rotating unit, and the lower bushing comprises a flange formed at the bottom of the lower bushing and contacting the lower surface of the rotating unit. Claim 15 In claim 14, the upper fixing washer faces the upper bushing, and the lower fixing washer faces the lower bushing, in a display device.

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