WO2024019193A1

WO2024019193A1 - Display device

Info

Publication number: WO2024019193A1
Application number: PCT/KR2022/010694
Authority: WO
Inventors: 김윤주; 박우석; 김용남; 이태연; 이승협
Original assignee: 엘지전자 주식회사
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2024-01-25

Abstract

A display device is disclosed. The display device of the present disclosure may comprise: a base; a pole which extends from the base; a head which includes a display panel; and a support arm which extends in the direction intersecting the pole and the head, and connects the pole and the head to each other, wherein the support arm may comprise a gas spring which has one end connected to the head and the other end connected to the pole, and is inclined relative to the longitudinal direction of the support arm.

Description

display device

This disclosure relates to a display device.

As the information society develops, the demand for display devices in various forms is increasing, and in response to this, in recent years, LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent display), and VFD (Vacuum Fluorescent) have been developed. Various display devices such as OLED (Organic Light Emitting Diode) and OLED (Organic Light Emitting Diode) are being researched and used.

Among these, the LCD panel has a TFT substrate and a color substrate that face each other with a liquid crystal layer in between, and can display images using light provided from a backlight unit. Additionally, OLED panels can display images by depositing an organic material layer capable of emitting light on its own on a substrate on which transparent electrodes are formed.

Recently, much research has been conducted on structures that freely adjust the angle or position of the display.

The present disclosure aims to solve the above-described problems and other problems.

Another object may be to provide a display device with a stand supporting the head.

Another purpose may be to provide a structure that can freely adjust the angle or height of the head.

Another purpose may be to provide a structure in which the position of the stand supporting the head can be freely changed.

According to one aspect of the present disclosure for achieving the above or other objects, a display device includes: a base; a pole extending from the base; A head having a display panel; And, it may include a support arm that extends in a direction intersecting the pole and the head and connects the pole and the head, wherein the support arm has: one end connected to the head and the other end connected to the pole. As a gas spring, it may include a gas spring inclined with respect to the longitudinal direction of the support arm.

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

According to at least one of the embodiments of the present disclosure, a display device including a stand supporting a head can be provided.

According to at least one of the embodiments of the present disclosure, a structure capable of freely adjusting the angle or height of the head can be provided.

According to at least one of the embodiments of the present disclosure, a structure in which the position of the stand supporting the head can be freely changed can be provided.

Additional scope of applicability of the present disclosure will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the present disclosure may be clearly understood by those skilled in the art, the detailed description and specific embodiments such as preferred embodiments of the present disclosure should be understood as being given only as examples.

1 to 32 are diagrams showing examples of display devices according to embodiments of the present disclosure.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

The suffixes “module” and “part” for components used in the following description are given or used interchangeably only for the ease of preparing the specification, and do not have distinct meanings or roles in themselves.

Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present disclosure are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are only for convenience of explanation, and are hereby used in this specification. The disclosed technical idea is not limited.

1 and 2, the display device 1 may include a head 10. The head 10 can display images. The head 10 may be referred to as a display 10 or a display unit (10).

The head 10 is located on the first long side (LS1), the second long side (LS2) opposite the first long side (LS1), the first long side (LS1), and the second long side (LS2). It may include an adjacent first short side (SS1) and a second short side (SS2) opposite the first short side (SS1). Meanwhile, for convenience of explanation, the lengths of the first and second long sides LS1 and LS2 are shown and described as being longer than the lengths of the first and second short sides SS1 and SS2. It may be possible that the length of (LS1, LS2) is approximately the same as the length of the first and second short sides (SS1, SS2).

The direction parallel to the short sides (SS1, SS2) of the head 10 may be referred to as the first direction (DR1) or the vertical direction. The direction parallel to the long sides (LS1, LS2) of the head 10 may be referred to as the second direction (DR2) or the left and right direction. The direction perpendicular to the long sides (LS1, LS2) and short sides (SS1, SS2) of the head 10 may be referred to as the third direction DR3 or the front-back direction.

The direction in which the head 10 displays an image may be referred to as the front (F, z), and the opposite direction may be referred to as 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 bottom (D).

The first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) may be referred to as 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 may be called a corner.

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).

The display device 1 may include a base 20, a pole 30, and a motion module MM.

The base 20 may have an overall flat cylinder shape. Base 20 may be placed on the ground.

The pole 30 may extend in a vertical direction. The lower end of the pole 30 may be coupled to the base 20. Pole 30 may be adjacent to the periphery of base 20.

The motion module MM may extend in a direction intersecting the pole 30. One side of the motion module (MM) may be coupled to the top of the pole 30. The other side of the motion module (MM) may be coupled to the rear side of the head (10). A rotatable connector (40) can be coupled to the rear of the head (10), and a support arm (50) can connect the head (10) and the pole (30). The rotary connector 40 may be referred to as connector 40. The base 20, pole 30, support arm 50, and rotary connector 40 may be collectively referred to as stands 20, 30, 50, and 40.

Accordingly, the head 10 may be supported by the motion module MM, the pole 30, and the base 20, and may be spaced upward from the ground.

Meanwhile, the power cable (CW) can be connected to an external power source. The plug (CWa) of the power cable (CW) may be connected to an outlet (concentric plug), and the jack (CWb) of the power cable (CW) may be connected to the base 20. A battery (not shown) may be installed in the base 20, pole 30, and/or head 10, and may be charged or discharged by power supplied through a power cable (CW). The display device receives power from the battery and can be operated while disconnected from the power cable (CW).

Referring to FIGS. 2 and 3, 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.

The display panel 11 may form the front of the head 10. For example, display panel 11 may be an OLED panel, an LCD panel, or an LED panel. The display panel 11 can divide an image into a plurality of pixels and output an image with color, brightness, and saturation for each pixel. The display panel 11 may be divided into an active area where images are displayed and a de-active area where images are not displayed. The display panel 11 may generate light corresponding to the colors of red, green, or blue depending on the control signal.

The middle cabinet 12 may extend along the perimeter of the display panel 11. The horizontal portion 12H may be located in front of the display panel 11. The vertical portion 12V may intersect the horizontal portion 12H and cover the side of the display panel 11. For example, the middle cabinet 12 may include metal or plastic. The middle cabinet 12 may be referred to as a side frame or guide panel.

The frame 13 may be located behind the display panel 11. Electronic components such as a printed circuit board (PCB) may be coupled to the rear of the frame 13. For example, the frame 13 may include a metal material. The frame 13 may be referred to as a mount plate or module cover.

The end frame 14 may form a perimeter of the head 10. The horizontal portion 14H may be located in front of the horizontal portion 12H of the middle cabinet 12. The vertical portion 14V may cover the side of the vertical portion 12V of the middle cabinet 12. For example, the end frame 14 may include metal or plastic.

The back cover 15 may form the rear of the head 10. The back cover 15 may cover the rear of the frame 13 and may be coupled to the frame 13.

Referring to FIGS. 3 and 4 , the backlight unit 110 may be located between the display panel 11 and the frame 13 and may be coupled to the frame 13. At this time, the display panel 11 may be referred to as an LCD panel. The backlight unit 110 may include an optical layer 111 and an optical sheet 112. The optical layer 111 may include a substrate 111a, at least one light source 111b, a reflective sheet 111c, and a diffusion plate 111d.

The substrate 111a may be coupled to the front of the frame 13. The substrate 111a may have a plate shape or may be composed of a plurality of straps spaced apart from each other in the vertical direction. At least one light source 111b may be mounted on the substrate 111a. For example, the light source 111b may include a light emitting diode (LED). An electrode pattern for connecting the adapter and the light source 111b may be formed on the substrate 111a. The reflective sheet 111c may be located in front of the substrate 111a. The reflective sheet 111c may have a hole 111h where the light source 111b is located. The diffusion plate 111d may be located in front of the reflective sheet 111c. The spacer 111s may support the rear side of the diffuser plate 111d between the reflective sheet 111c and the diffuser plate 111d.

The optical sheet 112 may be located in front of the diffusion plate 111d. The back of the optical sheet 112 may be in close contact with the diffusion plate 111d, and the front of the optical sheet 112 may be in close contact with or adjacent to the back of the display panel 11. The optical sheet 112 may include at least one of a diffusion sheet or a prism sheet. The coupling portion 112d may be formed on at least one edge of the optical sheet 112.

Accordingly, light from the light source 111b may be provided to the display panel 11 through the diffusion plate 111d and the optical sheet 112. Meanwhile, the display panel 11 of the present disclosure may be an OLED panel or another type of panel that does not require the backlight unit 110 described above.

Referring to FIGS. 3 and 5, the backlight unit 110' may be located between the display panel 11 and the frame 13 and may be coupled to the frame 13. At this time, the display panel 11 may be referred to as an LCD panel. The backlight unit 110' may include an optical layer 111' and an optical sheet 112. The optical layer 111' may include a substrate 111a', at least one light source 111b', a reflective sheet 111f, and a light guide plate 111e. The light guide plate 111e may be located between the frame 13 and the optical sheet 112 and may be supported by the frame 13.

The substrate 111a' may be adjacent to the periphery of the light guide plate 111e and may be coupled to the frame 13. At least one light source 111b' may be mounted on the substrate 111a'. For example, the light source 111b' may include a light emitting diode (LED). An electrode pattern for connecting the adapter and the light source 111b' may be formed on the substrate 111a'. The reflective sheet 111f may be positioned between the frame 13 and the light guide plate 111e and may be supported by the frame 13.

Accordingly, light from the light source 111b' may be provided to the display panel 11 through the light guide plate 111e and the optical sheet 112. Meanwhile, the display panel 11 of the present disclosure may be an OLED panel or another type of panel that does not require the above-described backlight unit 110'.

Referring to FIG. 6, the gas springs 51 and 52 may include a cylinder 51 and a piston rod 52 connected to the cylinder 51. The cylinder 51 may be blocked at both ends. The piston rod 52 may extend in the longitudinal direction of the cylinder 51 and may have a smaller diameter than the cylinder 51. A portion of the piston rod 52 may be inserted into the cylinder 51.

These gas springs 51 and 52 may adopt a conventional gas spring structure in which compressed gas (for example, compressed nitrogen) is filled. Compressed gas may be charged inside the cylinder 51. The piston rod 52 may penetrate one surface of the cylinder 51, and a piston may be fixed to the end. The piston may be located inside the cylinder 51, and the internal space of the cylinder 51 may be divided into two spaces. The two spaces may communicate with each other through an orifice formed in the piston. The area of one surface of the piston connected to the piston rod 52 may be smaller than the area of the other surface of the piston opposite to the one surface. Accordingly, by controlling the flow of gas passing through the orifice, the overall length of the gas springs 51 and 52 can be adjusted by tensioning or compressing the gas springs 51 and 52. Gas springs 51 and 52 may be referred to as

supports

51 and 52.

The first end fitting (51a) may protrude from the end of the cylinder (51). A first pin hole (51ah) may be formed in the first end fitting (51a). The first pin hole 51ah may be referred to as a first eyelet (51ah, first eyelet).

The second end fitting 52a may protrude from the end of the piston rod 52. A second pin hole (52ah) may be formed in the second end fitting (52a). The second pin hole 52ah may be referred to as a second eyelet (52ah, second eyelet).

The clip 53 may include a first clip 53a and a second clip 53b. The second end fitting (52a) may be sandwiched between the first clip (53a) and the second clip (53b). The first clip 53a may have an overall disk shape. The first clip 53a may have

grooves

532 and 533 corresponding to the movement trajectory of the second end fitting 52a. The first groove 532 may be depressed in one surface 531 of the first clip 53a facing the second end fitting 51a, and the second end fitting 52a may be seated thereon. The second groove 533 may be recessed in the first groove 532 and may be spaced apart from the second end fitting 52a. The rear pin 534 may protrude from the first groove 532 and may be inserted into the second pin hole 52ah. The second clip 53b and the first clip 53a may be left and right symmetrical or may have shapes corresponding to each other.

At this time, a fastening member such as a screw may pass through the hole 53hb of the second clip 53b and be fastened to the hole 53ha of the first clip 53a. Accordingly, the second clip 53b can be coupled to the first clip 53a. Additionally, the gas springs 51 and 52 can rotate around the rear pin 534.

Meanwhile, the second upper hole 53P and the second lower hole 53Q may be formed by penetrating the clip 53 in the thickness direction of the clip 53 and may be located behind the rear pin 534. . The second upper hole 53P may be located above the second lower hole 53Q.

Referring to FIG. 7, the pole cap 39 may include a hemispherical head 391 and a rectangular parallelepiped-shaped body 392. The lower part of the clip 53 may be inserted into the groove 39G formed in the head 391. A fastening member such as a screw may pass through the hole 39Fh of the body 392 and be fastened to the hole 53Fh formed in the lower portion of the clip 53. Accordingly, the clip 53 can be fixed to the pole cap 39.

Referring to FIG. 8, the

joints

42 and 43 of the rotatable connector 40 may be next to the first end fitting 51a. The

joints

42 and 43 may have an overall ping-pong club shape. The

joints

42 and 43 may include an upper part 421 and a rear part 422.

The upper part 421 may have a circular plate shape. The rear part 422 may protrude rearward from the upper part 421. The groove 423 may be depressed on one side facing the first end fitting 51a of the rear part 422. The front pin 424 may protrude from the groove 423 and may be inserted into the first pin hole 51ah. Accordingly, the gas springs 51 and 52 can rotate around the front pin 424.

Meanwhile, the first upper hole 42R and the first lower hole 42S may be formed by penetrating the rear part 422 in the thickness direction of the rear part 422 and may be located in front of the front fin 424. You can. The first upper hole 42R may be located above the first lower hole 42S.

Referring to FIG. 9, the lower arm 54 may be located above the gas springs 51 and 52. The lower arm 54 may include a first lower bar 541, a second lower bar 542, and a lower bridge 543. The first lower bar 541 and the second lower bar 542 may extend long and may be spaced apart from each other. The longitudinal direction of the

lower bars

541 and 542 may correspond to a straight line connecting the first lower hole 42S and the second lower hole 53Q. The lower bridge 543 may connect the upper side of the first lower bar 541 and the upper side of the second lower bar 542.

The first lower pin (Fs) is the first hole (542a) of the second lower bar 542, the first lower hole (42S) of the rear part 422, and the first hole (542a) of the first lower bar (541). 541a) can be penetrated in sequence. One end of the lower arm 54 may be coupled to the rear part 422 by the first lower pin (Fs). The lower arm 54 may rotate around the first lower pin (Fs).

The second lower pin (Fq) is the second hole 542b of the second lower bar 542, the second lower hole 53Q of the clip 53, and the second hole 541b of the first lower bar 541. ) can be penetrated one after another. The other end of the lower arm 54 may be coupled to the clip 53 by a second lower pin (Fq). The lower arm 54 can rotate around the second lower pin (Fq).

Accordingly, the lower arm 54 can connect the clip 53 and the

joints

42 and 43. The lower arm 54 may surround a portion of the gas springs 51 and 52.

Referring to FIG. 10, the upper arm 55 may be located above the lower arm 54. The upper arm 55 may include a first upper bar 551, a second upper bar 552, and an upper bridge 553. The first upper bar 551 and the second upper bar 552 may extend long and be spaced apart from each other. The longitudinal direction of the

upper bars

551 and 552 may correspond to a straight line connecting the first upper hole 42R and the second upper hole 53P. The upper bridge 553 may connect the upper side of the first upper bar 551 and the upper side of the second upper bar 552.

The first upper pin (Fr) includes the first hole 552a of the second upper bar 552, the first upper hole 42R of the rear part 422, and the first hole of the first upper bar 551 ( 551a) can be penetrated in sequence. One end of the upper arm 55 may be coupled to the rear part 422 by a first upper pin (Fr). The upper arm 55 may rotate around the first upper pin (Fr).

The second upper pin (Fp) includes the second hole 552b of the second upper bar 552, the second upper hole 53P of the clip 53, and the second hole 551b of the first upper bar 551. ) can be penetrated one after another. The other end of the upper arm 55 may be coupled to the clip 53 by a second upper pin (Fp). The upper arm 55 may rotate around the second upper pin (Fp).

Accordingly, the upper arm 55 can connect the clip 53 and the

joints

42 and 43. The upper arm 55 may surround a portion of the lower arm 54.

Referring to FIGS. 11 and 12, the upper protrusion 42ST may protrude downward from the lower surface of the upper part 421 and may extend in the circumferential direction of the upper part 421. The upper protrusion 42ST may extend along the arc of the upper part 421. The upper groove 42g may be formed in the central portion of the lower surface of the upper part 421. The vertical pin 42P may protrude downward from the central portion of the upper groove 42g.

The ball hinge 41 may be located below the upper part 421. The ball hinge 41 may include a body 410, a ring 41R, and a ball 41S. The ring 41R may be seated in the upper groove 42g, and the vertical pin 42P may penetrate the ring 41R. The body 410 may protrude from a side surface of the ring 41R in the radial direction of the ring 41R. The spherical ball 41S may be coupled to the end of the body 410 and may be located outside the

joints

42 and 43. For example, the protrusion 41T may be formed on the surface of the ball 41S and may form the end of the ball hinge 41.

The lower part 43 may have a circular plate shape. The lower part 43 may oppose the upper part 421 with respect to the ball hinge 41. The lower part 43 and the upper part 421 may be symmetrical up and down, or may have shapes that correspond to each other. The lower protrusion 43ST may protrude upward from the upper surface of the lower part 43 and may extend in the circumferential direction of the lower part 43. The lower protrusion 43ST may extend along an arc of the lower part 43. The upper surface of the lower protrusion 43ST may contact the lower surface of the upper protrusion 42ST. A fastening member such as a screw may pass through the hole 43h of the lower part 43 and be fastened to the hole 42h of the upper part 421.

Accordingly, the lower part 43 may be coupled to the upper part 421, and the ball hinge 41 may be sandwiched between the lower part 43 and the upper part 421. The ball hinge 41 can rotate around the vertical pin 42P.

Meanwhile, a portion of the rear part 422 may be located in a cut-out (see 43e of FIG. 12, cut-out) of the lower part 43 and the upper part 421.

Referring to FIG. 13, the mount 45 may have an overall disk shape with a hole in the center. The mount body 451 may form the outer peripheral surface of the mount 45, and the

engaging grooves

45a, 45b, and latch grooves may be formed on the outer peripheral surface of the mount 45. The first groove 452 may be formed by recessing from the front of the mount body 451 to the rear. The second groove 453 may be formed by recessing backward from the center of the first groove 452, and may have a smaller width than the first groove 452. The third groove 454 may be formed by recessing backward from the center of the second groove 453, and may have a smaller width than the second groove 453. The mount hole 450h may be formed through the central portion of the third groove 454 and may have a diameter equal to or larger than that of the ball 41S. Each of the first groove 452, the second groove 453, and the third groove 454 may have a ring shape.

More than half of the balls 41S may be located in front of the third groove 454. In other words, the ball 41S may penetrate the mount hole 450h, and more than half of the ball 41S may be located inside the

grooves

452, 453, and 454.

The friction member 44 may be located in front of the third groove 454 and may contact the surface of the ball 41S. The inner surface of the friction member 44 may be formed along the surface of the ball 41S. For example, the friction member 44 may include materials such as rubber, silicon, and resin. For example, two friction members 44 may be provided. The first friction member 441 may be seated in the third groove 454 and may contact a stepped portion between the third groove 454 and the second groove 453. The second friction member 442 may be located in front of the first friction member 441 and may be spaced apart from a stepped portion between the first groove 452 and the second groove 453. The contact area between the second friction member 442 and the ball 41S may be larger than the contact area between the first friction member 441 and the ball 41S. The friction member 44 may be referred to as a friction washer (44).

14 and 15, the pusher 46 may be seated in the first groove 452. A fastening member such as a screw may pass through the hole 46h of the pusher 46 and be fastened to the hole 452h formed in the first groove 452. Accordingly, the pusher 46 can be fastened to the mount 45.

The rib 460C may protrude rearward from the rear of the pusher 460 and may surround the side of the friction member 44. The rib 460C may contact or be adjacent to the second groove 453 (see FIG. 13). A portion of the rear surface of the pusher 46 and the rib 460C may contact the surface of the second friction member 44 (see contact surface 460CL in FIG. 15). Accordingly, the pusher 46 can press the friction member 44 to the surface of the ball 41S. Additionally, the frictional force of the friction member 44 with respect to the ball 41S can be adjusted using the fastening member that fastens the pusher 46 to the mount 45. In other words, the more strongly the pusher 46 is fastened to the mount 45 with the fastening member, the greater the friction force can be.

15 and 16, the guide hole 46D may be formed in the center of the pusher 46, and the protrusion 41T may be located. The boundary of the guide hole 46D may be formed around the protrusion 41T and may limit the rotational trajectory of the ball 41S, that is, the movement trajectory of the protrusion 41T. The boundary of the guide hole 46D may be referred to as a guide wall or stopper. The guide hole 46D may be a square-shaped hole.

Rotation of the mount 45 and the pusher 46 relative to the ball hinge 41 may be restricted as the boundary of the guide hole 46D hits the protrusion 41T. Meanwhile, depending on the embodiment, the protrusion 41T may be omitted.

The cap 47 may be coupled to or contact the front of the pusher 46. The cap 47 may cover the front of the pusher 46 and may be spaced apart from the protrusion 41T.

Referring to FIG. 17, the upper cover 40C1 may be located on the rear part 422, and a fastening member such as a screw penetrates the upper cover 40C1 to form the upper hole 42ha of the rear part 422, as shown in FIG. 10). The lower cover 40C2 may be located below the rear part 422, and a fastening member such as a screw penetrates the lower cover 40C2 and is fastened to the lower hole 40hb (see FIG. 11) of the rear part 422. It can be.

The first inner cover 56a and the second inner cover 56b may oppose each other with respect to the upper arm 55, and a fastening member such as a screw penetrates the hole 55Fh of the upper arm 55. Thus, it can be fastened to the

inner covers

56a and 56b.

The first outer cover 57a and the second outer cover 57b may be opposite to each other with respect to the

inner covers

56a and 56b, and may be coupled or attached to the

inner covers

56a and 56b.

Referring to FIG. 18, the gas springs 31 and 32 may include a cylinder 31 and a piston rod 32 connected to the cylinder 31. The cylinder 31 may be blocked at both ends. The piston rod 32 may extend in the longitudinal direction of the cylinder 31 and may have a smaller diameter than the cylinder 31. A portion of the piston rod 32 may be inserted into the interior of the cylinder 31.

These gas springs 31 and 32 may adopt a conventional gas spring structure in which compressed gas (for example, compressed nitrogen) is filled. Compressed gas may be charged inside the cylinder 31. The piston rod 32 may penetrate the lower surface of the cylinder 31, and a piston may be fixed to the end. The piston may be located inside the cylinder 31, and the internal space of the cylinder 31 may be divided into two spaces. The two spaces may communicate with each other through an orifice formed in the piston. The area of the lower surface of the piston connected to the piston rod 32 may be smaller than the area of the upper surface of the piston. Accordingly, by controlling the flow of gas passing through the orifice, the overall length of the gas springs 31 and 32 can be adjusted by tensioning or compressing the gas springs 31 and 32. The gas springs 31 and 32 may be referred to as

supports

31 and 32.

The first end fitting (31a) may protrude from the end of the cylinder (31). A first pin hole (31ah) may be formed in the first end fitting (31a). The first pin hole 31ah may be referred to as a first eyelet (31ah, first eyelet).

The second end fitting (32a) may protrude from the end of the piston rod (32). A second pin hole (32ah) may be formed in the second end fitting (32a). The second pin hole 32ah may be referred to as a second eyelet (32ah).

The block 37 may include a first block 37a and a second block 37b. The first end fitting 31a may be sandwiched between the first block 37a and the second block 37b. The first block 37a may have a semi-cylindrical shape. The first groove 37g may be formed on one surface of the first block 37a facing the first end fitting 31a, and the first end fitting 31a may be seated thereon. The first pin 37P may protrude from the first groove 37g and may be inserted into the first pin hole 31ah. The second block 37b may be left and right symmetrical with the first block 37a, or may have shapes corresponding to each other. The block 37 may be referred to as a clip (37). A fastening member such as a screw may pass through the hole 370b of the second block 37b and be fastened to the hole 370a of the first block 37a. Accordingly, the second block 37b can be coupled to the first block 37a.

Holder 38 may be located between block 37 and pole cap 39. The insertion space 38g may be formed on the upper surface of the holder 38. A fastening member such as a screw may pass through the hole 38Fh formed in the holder 38 through the insertion space 38g and be fastened to the hole 37Fh of the block 37. Accordingly, the holder 38 can be coupled to the block 37. The body 392 of the pole cap 39 may be inserted into the insertion space 38g. Fastening members Ba and Bb, such as screws, may pass through the hole 38ha formed on the side of the pole cap 39 and be fastened to the hole 39h formed on the side of the body 392. Accordingly, the holder 38 can be coupled to the pole cap 39.

Referring to FIG. 19, the stopper 33S may be adjacent to the lower end of the cylinder 31 and may be fixed to the outer peripheral surface of the cylinder 31. The upper ring 33U may be located between the stopper 33S and the block 37, and the cylinder 31 may penetrate therethrough. There may be a plurality of upper rings (33U).

The spacer 35 may be adjacent to the second end fitting 32a and may be fixed to the outer peripheral surface of the piston rod 32. The thickness of the spacer 35 may be equal to the minimum gap between the second end fitting 32a and the cylinder 31.

The stem 34 may include a first stem 34a and a second stem 34b. The second end fitting 32a may be sandwiched between the first stem 34a and the second stem 34b. The first stem 34a may have a semi-cylindrical shape that is long vertically. The seating portion 34S may be formed on one surface of the first stem 34a facing the cylinder 31, and a portion of the spacer 35 may be seated thereon. The groove 34g may be formed on one surface of the cylinder 31, and a portion of the piston rod 32 may be located therein. The second end fitting 32a may be seated on one surface of the cylinder 31. The second pin 34P may protrude from the one surface of the cylinder 31 and may be inserted into the second pin hole 32ah. The second stem 34b may be left and right symmetrical with the first stem 34a, or may have shapes corresponding to each other. A fastening member such as a screw may pass through the hole 341bh of the second stem 34b and be fastened to the hole 341ah of the first stem 34a. Accordingly, the second stem 34b may be coupled to the first stem 34a.

Referring to FIG. 20, the stem 34 may include a first part 341 surrounding a portion of the gas springs 31 and 32 described above, and a second part 342 connected to the first part 341. You can. The diameter of the first part 341 may be larger than the diameter of the second part 342.

The lower ring 33D may be adjacent to the first part 341 and the second part 342 may penetrate therethrough. That is, the lower ring 33D may surround a portion of the side surface of the second part 342. A plurality of lower rings 33D may be provided.

20 and 21, the inner sleeve 36 may be located below the lower ring 33D and may surround the side of the second part 342 of the stem 34. A fastening member such as a screw may pass through the hole 36h of the inner sleeve 36 and be fastened to the stem 34. Accordingly, the inner sleeve 36 can be coupled to the stem 34. Meanwhile, the diameter of the lower ring 33D may be larger than the diameter of the inner sleeve 36.

21 and 22, the inner sleeve 36 may include a cover portion 361 and an insertion portion 362. The cover portion 361 may extend long in the vertical direction and cover most of the stem 34 (see FIG. 20). The insertion portion 362 may extend downward from the bottom of the cover portion 361 and cover the remaining portion of the stem 34. The diameter of the insertion part 362 may be larger than the diameter of the cover part 361. The hole 36h may be formed on the side of the insertion portion 362.

The depression 20P may be formed on the upper surface of the base 20. The depression 20P may be located around the base 20. The shape and diameter of the recessed portion 20P may correspond to the shape and diameter of the insertion portion 362.

The outer sleeve (30M) may be located between the insertion portion 362 and the head 391 of the pole cap 39, and may form the outer surface of the pole 30. The upper part of the outer sleeve 30M may be coupled to the holder 38 through fastening members (Ba, Bb, see FIG. 18). For example, the fastening members Ba and Bb may penetrate the outer sleeve 30M and be coupled to the holder 38, and the heads of the fastening members Ba and Bb may be caught on the surface of the outer sleeve 30M. there is.

Referring to FIGS. 22 and 23, the first hole 34h may be formed at the bottom of the stem 34. The second hole 20Ph may be formed in the depression 20P and may be aligned with the first hole 34h. The insertion portion 362 may be inserted into the recessed portion 20P, and a fastening member such as a screw may penetrate the second hole 20Ph from below the recessed portion 20P and be fastened to the first hole 34h. there is. Accordingly, the pole 30 can be coupled to the base 20.

Meanwhile, depending on the embodiment, one of the first hole 34h and the second hole 20Ph may be a pin hole, and a pin inserted into the pin hole may be located in the other one. The pin and the pin hole may be electrically connected by contacting each other. In this case, through the electrical connection between the pin and the pin hole, the electronic components installed on the base 20 and the electronic components installed on the pole 30, support arm 50, and/or head 10 are electrically connected to each other. You can.

A plurality of wheels 20W1, 20W2, 20W3, 20W4, and 20W5 may be mounted on the lower surface of the base 20. Accordingly, the user can freely move the display device placed on the ground.

Referring to FIGS. 24 and 25 , a plurality of electronic components M1, M2, and M3 may be located between the display panel 11 and the back cover 15. For example, a plurality of electronic components M1, M2, and M3 may be mounted on the front of the back cover 15. For another example, the plurality of electronic components M1, M2, and M3 may be mounted on the front or back of the frame 13 (see FIG. 3) located in front of the back cover 15. Examples of a plurality of electronic components (M1, M2, M3) are as follows.

The power supply board (M1) can provide power to each component of the display device. For example, a rechargeable battery may be mounted on the head 10, pole 30, and/or base 20, and may be connected to the power supply board M1. The main board (M2) can control the display device. A timing controller board (TC) may be electrically connected to the display panel 11 through a cable (not shown) and may provide an image signal to the display panel 11.

The coupling hole 15H may be formed in the center of the back cover 15 and may be aligned with the rotatable connector 40. A portion of the rotatable connector 40 may pass through the coupling hole 15H.

The first latch projection 15F may be formed on a portion of the back cover 15 that forms a boundary of the coupling hole 15H. The second latch projection 16F may be opposite the first latch projection 15F with respect to the rotary connector 40.

The first latch groove 45a may be formed in the mount 45 and may be caught on the first latch protrusion 15F. A second latch groove 45b may be formed in the mount 45 and may be caught on the second latch protrusion 16F.

Accordingly, the rotatable connector 40 can be detachably coupled to the back cover 15. Alternatively, the rotary connector 40 may be coupled to the back cover 15 by a fastening member such as a screw penetrating the cap 47 and fastening to the coupling plate 15PL. Alternatively, the rotary connector 40 may be coupled to the back cover 15 by magnetically coupling the magnet provided in the cap 47 to the coupling plate 15PL (including iron (Fe) material).

Referring to FIG. 26, the rotatable connector 40 can be coupled to the head 10, and the support arm 50 can connect the rotatable connector 40 and the pole 30.

The piston rods 32 of the gas springs 31 and 32 may be fixed to the

stems

341 and 342, and the cylinders 31 of the gas springs 31 and 32 may move up and down (see Mv). Accordingly, the height of the head 10 relative to the ground can be adjusted.

6 and 27, a stepped portion (TL) of the clip 53 may be formed between one surface 531 and the first groove 532. The step portion TL may extend along a parabola. The first straight portion TL1 of the step portion TL may extend along the first straight line LN1. The second straight portion TL2 of the step portion TL may extend along the second straight line LN2. The curved portion TL3 of the step portion TL may connect the first straight portion TL1 and the second straight portion TL2. The angle between the first straight portion TL1 and the second straight portion TL2 may be an acute angle.

The end of the second end fitting 52a may contact the curved portion TL3. The curvature of the curved portion TL3 may correspond to the curvature of the distal end of the second end fitting 52a. The gas springs 51 and 52 may rotate about the second tilt axis F2 between the first straight part TL1 and the second straight part TL2 (see T11 and T12 in FIG. 27). The second tilt axis F2 may be the central axis of the rear fin 534. When the second end fitting 52a contacts the first straight part TL1 or the second straight part TL2, rotation of the gas springs 51 and 52 may be restricted. For example, in response to the tilting of the gas springs 51 and 52, the height of the head 10 may be raised by 90 mm upward or lowered by 90 mm from the state in which the support arm 50 is parallel to the horizontal line.

Meanwhile, the second upper fin (Fp) and the second lower fin (Fq) may be located behind the second tilt axis (F2). The second lower pin (Fq) may be located above the second tilt axis (F2), and the second upper pin (Fp) may be spaced upward from the second lower pin (Fq). The second upper fin (Fp) and the second lower fin (Fq) may be located on a vertical line.

9 and 27, a stepped portion (TR) may be formed between the rear part 422 and the groove 423. The step portion (TR) may extend along the swoosh. The step portion TR may include a straight portion TR1 and a curved portion TR2.

The peripheral surface of the first end fitting 51a may include a first straight part 51a1, a second straight part 51a2, and a round part 51a3. The first straight part 51a1 and the second straight part 51a2 may extend in the longitudinal direction of the gas springs 51 and 52. The round part 51a3 can connect the first straight part 51a1 and the second straight part 51a2 and contact the curved part TR2. The curvature of the round part 51a3 may correspond to the curvature of the curved part TR2. The gas springs 51 and 52 may rotate about the first tilt axis F1. The first tilt axis F1 may be the central axis of the front fin 424. When the curved portion TR2 contacts the first straight portion 51a1 or the second straight portion 51a2, rotation of the gas springs 51 and 52 may be restricted.

Meanwhile, the first upper fin (Fr) and the first lower fin (Fs) may be located in front of the first tilt axis (F1). The first upper fin (Fr) may be located parallel to or below the first tilt axis (F1), and the first lower fin (Fs) may be spaced downward from the first upper fin (Fr). The first upper fin (Fr) and the first lower fin (Fs) may be located on a vertical line.

27 and 28, the load W10 of the head 10 may act as a reaction force W11 on the ball hinge 41, and the reaction force W11 may act as a reaction force W12 on the rear part 422. You can.

For example, the weight of the head 10 may be 4.5 kg, and the horizontal distance D40 between the first upper pin (Fr) and the second upper pin (Fp) may be 215.5 mm. At this time, the moment to lower the rear part 422 due to the load of the head 10 may be about 969.75 kgf·mm, which is the product of the reaction force (W12) and the horizontal distance (D40). For example, the horizontal distance D50 between the first tilt axis F1 and the second upper pin Fp may be 201.8 mm. At this time, the moment to raise the rear part 422 by the gas springs 51 and 52 may be the product of F (Gas), Sin (theta), and the horizontal distance (D50), and this moment to raise is the above-mentioned lowering moment. When is equal to the moment (969.75kgf·mm), the head 10 can maintain equilibrium without sagging. Here, theta may be an angle (acute angle) between the longitudinal direction of the gas springs 51 and 52 of the support arm 50 parallel to the horizontal line and the horizontal line. That is, F(Gas) is the longitudinal force of the gas springs 51 and 52, and can be 4.806kgf·mm/Sin(theta) for the above equilibrium. As theta is greater than 0, the gas springs 51 and 52 may be advantageous in maintaining the above equilibrium.

For example, the angle (theta 50) between the gas springs (51, 52) and the horizontal line may be 4.6 degrees, and the horizontal distance (D50) between the first tilt axis (F1) and the second upper pin (Fp) may be It could be 201.8mm. At this time, the moment to raise the rear part 422 by the gas springs 51 and 52 is the product of F (Gas), Sin (4.6 degrees), and horizontal distance (D50), that is, 16.2 × F (Gas) kgf · It can be mm. Here, F (Gas) may be the force of the gas springs 51 and 52, and when it corresponds to about 60 kg (≒ 969.75/16.2), the moment to lower and the moment to raise the rear part 422 can be balanced. .

Accordingly, the support arm 50 is a gas spring inclined with respect to the longitudinal direction of the support arm 50, that is, the horizontal direction, in a state parallel to the horizontal line (see the support arm 50 located in the center of T11 and T12 in FIG. 27). The head 10 can be supported by (51, 52).

Referring to FIG. 29, the support arm 50 may be tilted downward by 25 degrees (T11, see FIG. 27) from the horizontal line around the second tilt axis F2.

For example, the weight of the head 10 may be 4.5 kg, and the horizontal distance D41 between the first upper pin (Fr) and the second upper pin (Fp) may be 202.3 mm. At this time, the moment to lower the rear part 422 due to the load of the head 10 may be about 910.3 kgf·mm, which is the product of the reaction force (W12) and the horizontal distance (D41).

For example, the angle theta 51 between the gas springs 51 and 52 and the horizontal line may be 16.5 degrees, and the horizontal distance D51 between the first tilt axis F1 and the second upper pin Fp is It may be 188.7 mm, and the vertical distance (H51) between the first tilt axis (F1) and the second upper pin (Fp) may be 71.6 mm. At this time, the moment to lower the rear part 422 by the gas springs 51 and 52 is the product of F (Gas), Sin (16.5 degrees), and horizontal distance (D51), that is, 53.6 × F (Gas) kgf · It can be mm. In addition, the moment to raise the rear part 422 by the gas springs 51 and 52 is the product of F (Gas), Cos (16.5 degrees), and vertical distance (H51), that is, 68.6 × F (Gas) kgf · It can be mm. Here, F (Gas) may be the force of the gas springs 51 and 52, and when 910.3 + 53.6 × F (Gas) < 68.6 × F (Gas), that is, F (Gas) > 60 kg, the rear part (422 ) The moment to lower and the moment to raise can be in equilibrium. At this time, the length L51 of the gas springs 51 and 52 may be smaller than the length L50 of the gas springs 51 and 52 of the support arm 50 parallel to the horizontal line (see FIG. 28).

Accordingly, the support arm 50 can support the head 10 in a state inclined 25 degrees downward from the horizontal line (see the support arm 50 located at T11 in FIG. 27).

Referring to FIG. 30, the support arm 50 may be tilted upward by 25 degrees (T12, see FIG. 27) from the horizontal line around the second tilt axis F2.

For example, the weight of the head 10 may be 4.5 kg, and the horizontal distance D42 between the first upper pin (Fr) and the second upper pin (Fp) may be 202.3 mm. At this time, the moment to lower the rear part 422 due to the load of the head 10 may be about 910.3 kgf·mm, which is the product of the reaction force (W12) and the horizontal distance (D42).

For example, the angle (theta 52) between the gas springs (51, 52) and the horizontal line may be 26.9 degrees, and the horizontal distance (D52) between the first tilt axis (F1) and the second upper pin (Fp) may be It may be 188.7 mm, and the vertical distance (H52) between the first tilt axis (F1) and the second upper pin (Fp) may be 75.3 mm. At this time, the moment to lower the rear part 422 by the gas springs 51 and 52 is the product of F (Gas), Cos (26.9 degrees), and vertical distance (H52), that is, 67.1 × F (Gas) kgf · It can be mm. In addition, the moment to raise the rear part 422 by the gas springs 51 and 52 is the product of F (Gas), Sin (26.9 degrees), and horizontal distance (D52), that is, 85.3 × F (Gas) kgf · It can be mm. Here, F (Gas) may be the force of the gas springs 51 and 52, and when 910.3 + 67.1 × F (Gas) < 85.3 × F (Gas), that is, F (Gas) > 50 kg, the rear part (422 ) The moment to lower and the moment to raise can be in equilibrium. At this time, the length L52 of the gas springs 51 and 52 may be greater than the length L50 of the gas springs 51 and 52 of the support arm 50 parallel to the horizontal line (see FIG. 28).

Accordingly, the support arm 50 can support the head 10 in a state inclined 25 degrees upward from the horizontal line (see the support arm 50 located at T12 in FIG. 27).

Referring to FIG. 31, the head 10 may be spaced upward from the base 20. The user can pivot the head 10. The pivot axis may pass through the center of the head 10 and be perpendicular to the head 10, and may be defined by the ball 41S (see FIG. 15). Referring to the left picture of FIG. 31, the head 10 can be placed in landscape mode. Referring to the picture on the right of FIG. 32, the head 10 can be placed in portrait mode.

Referring to FIG. 32, the user can tilt the head 10. The tilt axis of the head 10 is a tilt axis (Axs) defined by the ball 41S (see FIG. 15), a first tilt axis (Ax1, F1, see FIG. 27), or a second tilt axis (Ax2, F2, (see FIG. 27).

The user can swivel the head 10. The swivel axis of the head 10 may be the swivel axis Ays defined by the ball 41S (see FIG. 15) or the swivel axis Ay defined by the vertical pin 42P (see FIG. 16).

The user can pivot the head 10. The pivot axis of the head 10 may be the pivot axis Azs defined by the ball 41S (see FIG. 15).

The user can adjust the height of the head 10 by adjusting the length of the pole 30.

1 to 32, a display device according to one aspect of the present disclosure includes: a base; a pole extending from the base; A head having a display panel; And, it may include a support arm that extends in a direction intersecting the pole and the head and connects the pole and the head, wherein the support arm has: one end connected to the head and the other end connected to the pole. As a gas spring, it may include a gas spring inclined with respect to the longitudinal direction of the support arm.

The angle between the longitudinal direction of the support arm and the gas spring may be an acute angle.

The gas spring includes: a cylinder defining the end of the gas spring; Additionally, it may include a piston rod defining the other end of the gas spring, and the overall length of the cylinder and the piston rod may be variable.

The display device may further include: a connector connecting the head and the cylinder, and the support arm may include: a first end fitting protruding from an end of the cylinder, the first end fitting comprising: It may be rotatably coupled to the connector about an axis parallel to the thickness direction of the first end fitting.

The support arm may further include a clip connecting the piston rod and the pole, and the gas spring may include a second end fitting protruding from an end of the piston rod, and the second end fitting may be rotatably coupled to the clip about an axis parallel to the thickness direction of the second end fitting.

The support arm may further include an arm adjacent to the gas spring and rotatably coupled to the connector and the clip, wherein the arm: penetrates the connector and is parallel to the rotation axis of the first end fitting. a first pin that provides a rotation axis of the arm and is located in front of the rotation axis of the first end fitting; Additionally, it may include a second pin that penetrates the clip, provides a rotation axis of the clip parallel to the rotation axis of the second end fitting, and is located behind the rotation axis of the second end fitting.

The arm is: a lower arm surrounding a portion of the gas spring; a first lower pin providing a rotation axis of the lower arm penetrating the connector, and a second lower arm providing a rotation axis of the lower arm penetrating the clip. A lower arm having a lower pin; And, an upper arm surrounding a portion of the lower arm; a first upper pin providing a rotation axis of the upper arm penetrating the connector, and a second upper pin providing a rotation axis of the upper arm penetrating the clip. It may further include an upper arm having a, wherein the first upper pin may be spaced upward from the first lower pin, and the second lower pin may be spaced downward from the second upper pin. there is.

The first upper pin and the first lower pin may be located on a vertical line, the second upper pin and the second lower pin may be located on a vertical line, and the first upper pin may be located on a vertical line. It may be located parallel to or below the rotation axis of the end fitting, and the first lower pin may be located above the rotation axis of the second end fitting.

The display device may further include a rotatable connector positioned between the head and the support arm and coupled to the head and the support arm, wherein one end of the support arm is tiltable relative to the rotatable connector. can be combined

The rotatable connector includes: a joint coupled to the support arm; Additionally, it may include a ball hinge located between the joint and the head and coupled to the joint and the head, wherein the ball hinge includes: a ball; Additionally, it may include a mount coupled to the head and movably coupled to the ball along the surface of the ball.

The ball hinge may further include a friction member that contacts the surface of the ball and is seated on the mount.

The ball hinge may further include: a pusher opposed to the ball with respect to the friction member and coupled to the mount, wherein the pusher presses the friction member to the surface of the ball. You can.

The ball hinge may further include a protrusion protruding from the ball, and the pusher may include a guide hole formed to penetrate the pusher and where the protrusion is located, and the boundary of the guide hole may be: It may be located on the movement path of the protrusion.

The ball hinge includes: a body protruding from the ball; In addition, it may further include a ring opposed to the ball with respect to the body and swivelably coupled to the joint.

The pole includes: a stem extending in the longitudinal direction of the pole and fixed to the base; And, it may include a gas spring located between the stem and the support arm and coupled to the stem and the support arm.

Any or other embodiments of the present disclosure described above are not exclusive or distinct from each other. In certain embodiments or other embodiments of the present disclosure described above, each configuration or function may be used in combination or combined.

For example, this means that configuration A described in a particular embodiment and/or drawing may be combined with configuration B described in other embodiments and/or drawings. In other words, even if the combination between components is not directly explained, it means that combination is possible, except in cases where it is explained that combination is impossible.

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims

Base;

a pole extending from the base;

A head having a display panel; and,

A support arm extending in a direction intersecting the pole and the head and connecting the pole and the head,

The support arm is:

A gas spring having one end connected to the head and the other end connected to the pole; a display device including a gas spring inclined with respect to the longitudinal direction of the support arm.
According to claim 1,

A display device wherein the angle between the longitudinal direction of the support arm and the gas spring is an acute angle.
According to claim 1,

The gas spring:

a cylinder defining the end of the gas spring; and,

Includes a piston rod defining the other end of the gas spring,

A display device wherein the total length of the cylinder and the piston rod is variable.
According to clause 3,

Further comprising a connector connecting the head and the cylinder,

The support arm is:

comprising a first end fitting protruding from an end of the cylinder,

The first end fitting is,

A display device rotatably coupled to the connector about an axis parallel to the thickness direction of the first end fitting.
According to clause 4,

The support arm is:

Further comprising a clip connecting the piston rod and the pole,

The gas spring:

a second end fitting protruding from the end of the piston rod;

The second end fitting is,

A display device rotatably coupled to the clip about an axis parallel to the thickness direction of the second end fitting.
According to clause 5,

The support arm is:

Further comprising an arm adjacent to the gas spring and rotatably coupled to the connector and the clip,

The cancer is:

a first pin that penetrates the connector, provides a rotation axis of the arm parallel to the rotation axis of the first end fitting, and is located in front of the rotation axis of the first end fitting; and,

A display device comprising a second pin penetrating the clip, providing an axis of rotation of the clip parallel to an axis of rotation of the second end fitting, and positioned behind the axis of rotation of the second end fitting.
According to clause 6,

The cancer is:

A lower arm surrounding a portion of the gas spring, comprising a first lower pin providing a rotation axis of the lower arm penetrating the connector and a second lower pin providing a rotation axis of the lower arm penetrating the clip. lower arm; and,

An upper arm surrounding a portion of the lower arm, comprising a first upper pin providing a rotation axis of the upper arm penetrating the connector and a second upper pin providing a rotation axis of the upper arm penetrating the clip. Further comprising an upper arm that does,

The first upper pin is,

Spaced upward from the first lower pin,

The second lower pin is,

A display device spaced downward from the second upper pin.
According to clause 7,

The first upper pin and the first lower pin are located on a vertical line,

The second upper pin and the second lower pin are located on a vertical line,

The first upper pin is,

Located parallel to or below the rotation axis of the first end fitting,

The first lower pin is,

A display device positioned above the rotation axis of the second end fitting.
According to claim 1,

It is located between the head and the support arm and further includes a rotatable connector coupled to the head and the support arm,

The one end of the support arm is,

A display device tiltably coupled to the rotatable connector.
According to clause 9,

The rotatable connector:

A joint coupled to the support arm; and,

It is located between the joint and the head and includes a ball hinge coupled to the joint and the head,

The ball hinge:

ball; and,

A display device comprising a mount coupled to the head and movably coupled to the ball along a surface of the ball.
According to claim 10,

The ball hinge:

A display device further comprising a friction member in contact with the surface of the ball and seated on the mount.
According to claim 11,

The ball hinge:

Further comprising a pusher opposed to the ball with respect to the friction member and coupled to the mount,

The pusher is,

A display device that presses the friction member against the surface of the ball.
According to claim 12,

The ball hinge:

Further comprising a protrusion protruding from the ball,

The pusher:

It is formed through the pusher and includes a guide hole where the protrusion is located,

The boundary of the guide hole is,

A display device located on the movement path of the protrusion.
According to claim 10,

The ball hinge:

a body protruding from the ball; and,

A display device further comprising a ring opposed to the ball with respect to the body and swivelably coupled to the joint.
According to claim 1,

The above pole is:

a stem extending in the longitudinal direction of the pole and fixed to the base; and,

A display device comprising a gas spring located between the stem and the support arm and coupled to the stem and the support arm.