Display device

Abstract

The utility model discloses a display device. The display device of the utility model comprises a bottom housing for accommodating a display panel; a top case for opening and closing the bottom case; the locking unit is provided with a locking rod which is pivotally connected to the bottom shell and can be clamped to the top shell or released from the top shell; the locking unit includes: a cam providing a pivot axis of the lock bar between the bottom housing and the lock bar, extending in a radial direction of the pivot axis to come into contact with the bottom housing; the cam includes: a first surface located between the pivot shaft and the top housing to form a curved surface; the second surface is opposite to the first surface by taking the pivot shaft as a reference to form a linear surface; and a third surface located between the first surface and the second surface, forming a curved surface from the second surface, and forming a step raised relative to the first surface.

Description

Technical Field

[0001] The utility model relates to a display device. Background Art

[0002] With the development of the information society, the requirements for display devices have been continuously increasing in various forms. Correspondingly, in recent years, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), VFD (Vacuum Fluorescent Display), and OLED (Organic LightEmitting Diode) have been researched and used.

[0003] Among them, the LCD panel may include a TFT (Thin FilmTransistor) substrate and a color substrate facing each other across a liquid crystal layer, and may display an image using light provided by a backlight unit. In addition, the OLED panel may display an image by depositing an organic layer capable of self-luminance on a substrate formed with a transparent electrode.

[0004] Recently, there have been many researches on display devices that can be used outdoors. At the same time, there have been many researches on structures for improving the storage and portability of display devices. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the aforementioned problems and other problems.

[0006] Another purpose may be to provide a structure that can easily store and carry a display device.

[0007] Another purpose may be to provide a structure that can improve the durability and rigidity of a portable display device.

[0008] Another purpose may be to provide a heat dissipation structure for a portable display device.

[0009] Another purpose may be to provide a shock absorption structure for a portable display device.

[0010] Another purpose may be to provide a locking structure for a portable display device.

[0011] Another purpose may be to provide a locking structure for a portable display device that improves the usability.

[0012] Another object may be to provide a portable display device in which the opening / closing angle of a locking structure is reduced.

[0013] Another object may be to provide a locking structure for a display device with improved durability.

[0014] According to one aspect of the present invention for achieving the above or another object, a display device may include: a bottom case that houses a display panel; a top case that opens and closes the bottom case; and a locking unit having a lock lever pivotally connected to the bottom case and capable of being locked to or unlocked from the top case; the locking unit includes: a cam that provides a pivot axis of the lock lever between the bottom case and the lock lever and extends radially toward the pivot axis to contact the bottom case; the cam includes: a first surface located between the pivot axis and the top case, forming a curved surface; a second surface facing the first surface with the pivot axis as a reference, forming a straight surface (plane); and a third surface located between the first surface and the second surface, forming a curved surface from the second surface and forming a step that rises relative to the first surface.

[0015] The effects of the display device of the present invention will be described as follows.

[0016] According to at least one embodiment of the embodiments of the present invention, a structure capable of easily storing and carrying a display device can be provided.

[0017] According to at least one embodiment of the embodiments of the present invention, a structure capable of improving the durability and rigidity of a portable display device can be provided.

[0018] According to at least one embodiment of the embodiments of the present invention, a heat dissipation structure of a portable display device can be provided.

[0019] According to at least one embodiment of the embodiments of the present invention, a shock absorption structure of a portable display device can be provided.

[0020] According to at least one embodiment of the embodiments of the present invention, it includes: a third surface that protrudes in a direction facing the lock lever with the pivot axis as a reference and forms a curved surface; and a second surface that extends from the third surface and forms a straight surface; thereby being able to provide a locking structure of a display device capable of distinguishing between an unlocking operation and a locking operation.

[0021] According to at least one embodiment of the embodiments of the present invention, the second surface forming the closing ramp of the cam is formed as a straight surface, thereby being able to improve the holding force of the unlocking state of the locking structure. In addition, the close contact force between the locking unit and the case is increased, thereby being able to reduce the jitter and unnecessary movement of the locking lever.

[0022] According to at least one embodiment among the embodiments of the present invention, it includes a recessed portion formed in a cam and a corresponding stopper portion, thereby minimizing the phenomenon that the locking unit rotates more than the designed pivot angle. Accordingly, a locking structure of a display device with improved durability can be provided.

[0023] According to at least one embodiment among the embodiments of the present invention, the cam includes a fourth surface whose second surface as a closing ramp becomes larger as the distance from the pivot axis increases, thereby minimizing the phenomenon that the locking unit in the released state rotates more than the designed angle. Accordingly, a locking structure of a display device with improved durability can be provided.

[0024] According to at least one embodiment among the embodiments of the present invention, the cam is formed such that the distance between the locking position and the pivot axis is greater than the distance between the unlocking position and the pivot axis, so that the difference in ramp height between the locking position and the nose end can be reduced. Accordingly, the driving force applied by the user to unlock the locking unit can be reduced. The user can unlock the locking unit easily and quickly.

[0025] According to at least one embodiment among the embodiments of the present invention, the ramp height of the third surface decreases as it gets closer to the locking position from the nose end, thereby forming the locking holding force of the locking unit.

[0026] According to at least one embodiment among the embodiments of the present invention, the curvature of the convex surface of the third surface is greater than the curvature of the nose end surface of the third surface, thereby improving the locking holding force of the locking unit.

[0027] From the following detailed description, the additional scope to which the present invention is applicable will become apparent. However, those skilled in the art can clearly understand various changes and modifications within the spirit and scope of the present invention. Therefore, it should be understood that the detailed description and specific embodiments such as the preferred embodiments of the present invention are given only by way of example. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figures 1 to 52 It is a diagram showing an example of a display device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the drawings. Regardless of the drawing numbers, the same or similar components are given the same reference numerals, and repeated description thereof is omitted.

[0030] Regarding the suffixes “module” and “unit” of the components used in the following description, they are given or mixed only for the convenience of writing the specification, and they do not have a meaning or function that distinguishes each other.

[0031] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of related well-known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the drawings are only used to help understand the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the drawings, and should be understood to include all changes, equivalents and substitutes within the scope of the ideas and technologies of this specification.

[0032] Terms including ordinal numbers such as "first" and "second" may be used to describe various components, but the components are not limited by such terms. The terms are only used for the purpose of distinguishing one component from other components.

[0033] When referring to a certain component being "connected" or "coupled" to another component, it should be understood that it may be directly connected or coupled to the other component, but there may also be other components between them. Conversely, when referring to a certain component being "directly connected" or "directly coupled" to another component, it should be understood that there are no other components between them.

[0034] Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0035] In this application, terms such as "including" or "having" are only used to specify the existence of features, numbers, steps, actions, components, parts or combinations thereof recorded in the specification, and are not intended to exclude the existence or addition of one or more other features or numbers, steps, actions, components, parts or combinations thereof.

[0036] The direction indicators of up U, down D, left Le, right Ri, front F and rear R shown in the figure are only for convenience of description, and the technical ideas disclosed in this specification are not limited thereto.

[0037] The display panel of the present utility model may be an LCD panel or an OLED panel, but the types of display panels applicable to the present utility model are not limited thereto.

[0038] Referring to Figure 1 and Figure 2 , the display device 1 may include a base 10, a cover 20, a hinge 30, an arm 50, and a display 70.

[0039] The base 10 may have an overall flat box shape. The placement part 10S may be formed by being recessed downward on the top surface of the base 10. The size of the placement part 10S may correspond to the size of the display 70. For example, the base 10 may be made of plastic. The base 10 may be referred to as the lower body 10, the lower case 10, the lower cover 10, the bottom box 10, the bottom box body 10, or the bottom shell 10.

[0040] The cover 20 may have an overall flat box shape. The appearance of the cover 20 may be similar to the appearance of the base 10. The recessed part 20S may be formed on one side of the cover 20 and may be opposite to the placement part 10S with respect to the display 70. For example, the cover 20 may be made of plastic. The cover 20 may be referred to as the upper body 20, the upper case 20, the upper cover 20, the top box 20, the top box body 20, or the top shell 20.

[0041] One side of the hinge 30 may be adjacent to or located on one side of the base 10, and may be combined with the base 10, and one side of the hinge 30 may rotate about the central axis of the hinge 30. The other side of the hinge 30 may be adjacent to or located on one side of the cover 20, and may be combined with the cover 20, and the other side of the hinge 30 may rotate about the central axis of the hinge 30. The one side of the base 10 may be one long side of the base 10, and the one side of the cover 20 may be one long side of the cover 20 adjacent to the one long side of the base 10. For example, a plurality of hinges 30 may be spaced apart from each other along the one long side. The number of hinges 30 may be two.

[0042] The arm 50 may extend in a direction intersecting the base 10. The arm 50 may have an overall square lumber shape. The groove 10G may be formed by being recessed downward in the placement part 10S and may have a shape corresponding to the arm 50. One end of the arm 50 may be adjacent to and located on one end of the groove 10G. The arm 50 may be rotatably coupled to the base 10 about a first axis adjacent to the one end of the arm 50 (refer to Figure 1 Rt). The first axis may be parallel to the left - right direction. The other end of the arm 50 may be coupled to the central part of the back surface of the display 70. The display 70 may be rotatably coupled to the arm 50 about a second axis adjacent to the other end of the arm 50 (refer to Figure 1 Rd). The second axis may be parallel to the first axis. The arm 50 may be referred to as the pole 50, the bar 50, or the lever 50.

[0043] The display 70 may include a display panel 71 and a side cover 72. The display panel 71 may define the front of the display 70 and may display images. The side cover 72 may extend along the periphery of the display panel 71 and may cover the sides of the display panel 71. The first portion 72U may define the upper side of the side cover 72, and the second portion 72D may define the lower side of the side cover 72. The third portion 72L may define the left side of the side cover 72, and the fourth portion 72R may define the right side of the side cover 72. The display 70 may be referred to as a display unit 70 or a display module 70.

[0044] For example, the user may pivot the arm 50 about the first axis. When the arm 50 pivots, the position of the other end of the arm 50 may become higher. The user may rotate the display 70 about the second axis so that the display panel 71 faces forward. The user may adjust the angle of the arm 50 relative to the base 10 and the angle of the display 70 relative to the arm 50.

[0045] As another example, the user may pivot the arm 50 about the first axis. When the arm 50 pivots in the reverse direction, the position of the other end of the arm 50 may become lower. In addition, the arm 50 may be placed on the groove 10G. The user may rotate the display 70 about the second axis so that the display panel 71 faces upward.

[0046] Referring to Figure 2 and Figure 3 , the user may pivot the cover 20 about the central axis of the hinge 30 so that the cover 20 overlaps the base 10. The display panel 71 may be sandwiched between the base 10 and the cover 20.

[0047] The locks 10a, 10b of the base 10 may be provided on the other side of the base 10 opposite to the side near the hinge 30. The locks 10a, 10b may be referred to as lock assemblies 10a, 10b or locking units 10a, 10b. The recessed portions 20a, 20b of the cover 20 may be provided on the other side of the cover 20 opposite to the side near the hinge 30. After overlapping the cover 20 on the base 10, the user may lock the locks 10a, 10b in the recessed portions 20a, 20b. Thus, the user may store the display 70 inside the base 10 and the cover 20 for carrying. In addition, a handle (not shown) that can be grasped by the user's hand may be installed on the button 10c formed on one side of the base 10.

[0048] Referring to Figure 4 , the display 70 may include a display panel 71, a side cover 72, backlight units 73, 74, a frame 75, and a rear cover 76.

[0049] The display panel 71 may form the front surface of the display 70 and may display an image. The display panel 71 may display an image by causing a plurality of pixels to output RGB (Red, Green or Blue) of each pixel at a timing. The display panel 71 may be divided into an active area for displaying an image and a de-active area for not displaying an image. The display panel 71 may include a front substrate and a rear substrate that face each other across a liquid crystal layer. The display panel 71 may be referred to as an LCD panel.

[0050] The front substrate may include a plurality of pixels formed of red, green, and blue sub-pixels. The front substrate may output light corresponding to red, green, or blue according to a control signal.

[0051] The rear substrate may include a plurality of switching devices. The rear substrate may switch a pixel electrode. For example, the pixel electrode may change the molecular arrangement of the liquid crystal layer according to a control signal input from the outside. The liquid crystal layer may include a plurality of liquid crystal molecules. The arrangement of the plurality of liquid crystal molecules may change corresponding to the voltage difference generated between the pixel electrode and the common electrode. The liquid crystal layer may transmit or block the light provided from the backlight units 73, 74 to the front substrate.

[0052] The side cover 72 may surround the periphery of the display panel 71 and may cover the side surface of the display panel 71. The side cover 72 may be coupled to or support the display panel 71. The side cover 72 may be referred to as a guide panel 72, a side frame 72, or an intermediate case 72.

[0053] The backlight units 73, 74 may be located behind the display panel 71. The backlight units 73, 74 may include a plurality of light sources. The backlight units 73, 74 may be coupled to the front of the frame 75. The backlight units 73, 74 may be driven in a full drive mode or a local drive mode such as local dimming, impulsive drive, etc. The backlight units 73, 74 may include an optical sheet 74 and an optical layer 73.

[0054] The optical sheet 74 may uniformly transmit the light of the light source to the display panel 71. The optical sheet 74 may be formed of a plurality of layers. For example, the optical sheet 74 may include a prism sheet, a diffusion sheet, or the like. On the other hand, the coupling portion 74d of the optical sheet 74 may be coupled to the frame 75 and / or the rear cover 76.

[0055] The frame 75 can be located behind the backlight units 73, 74, and can support a plurality of components of the display 70. The edge of the frame 75 can be fixed to the side cover 72. For example, structures such as the backlight units 73, 74, and the PCB (Printed Circuit Board) provided with a plurality of electronic devices can be coupled to the frame 75. For example, the frame 75 can be made of a metal material. The frame 75 can be referred to as the main frame 75, the module cover 75, or the cover bottom 75.

[0056] The rear cover 76 can cover the rear of the frame 75. The rear cover 76 can be coupled to the frame 75. For example, the rear cover 76 can be made of a metal or plastic material.

[0057] Referring to Figure 5 , the display 70 can include a display panel 71, a side cover 72, a frame 75, and a rear cover 76.

[0058] The display panel 71 can form the front of the display 70 and can display an image. The display panel 71 can divide the image into a plurality of pixels and match the color, brightness, and saturation of each pixel to output the image. The display panel 71 can be divided into an active area for displaying an image and a de-active area for not displaying an image. The display panel 71 can generate light corresponding to red, green, or blue according to a control signal. The display panel 71 can be referred to as an OLED panel.

[0059] The side cover 72 can surround the periphery of the display panel 71 and can cover the side of the display panel 71. The side cover 72 can be coupled to or support the display panel 71. The side cover 72 can be referred to as the guide panel 72, the side frame 72, or the intermediate box 72.

[0060] The frame 75 can be located behind the display panel 71, and the display panel 71 can be coupled to the frame 75. The edge of the frame 75 can be fixed to the side cover 72. A plurality of electronic components can be mounted on the frame 75. For example, the frame 75 can be made of a metal material. The frame 75 can be referred to as the main frame 75, the module cover 75, the cover bottom 75, or the panel frame 75.

[0061] The rear cover 76 can cover the rear of the frame 75. The rear cover 76 can be coupled to the frame 75. For example, the rear cover 76 can be made of a metal or plastic material.

[0062] Referring to Figure 6 , the base 10 can include a bottom 11, a frame 12, a top 13, a jacket 15, and a substrate 16.

[0063] The bottom 11 can define the bottom surface of the base 10 and can generally have a square tray shape. The bottom 11 can be referred to as the outer shell 11, or the outer shell body 11, or the bottom part 11, or the cover body 11, or the tray 11. The locks 10a, 10b can be provided on the side surface of the bottom 11.

[0064] The frame 12 can form the skeleton of the base 10. The frame 12 can be located on the bottom 11 and can be combined with the bottom 11.

[0065] The top 13 can define the top surface of the base 10 and can generally have a plate shape. The top 13 can face the bottom 11 with reference to the frame 12 and can cover the frame 12. The top 13 can be detachably combined with the frame 12 and / or the bottom 11. The top 13 can be referred to as the top part 13, the cap 13, the top shell 13, or the top plate 13.

[0066] The placement part 10S and the groove 10G can be formed on the top surface of the top 13. The recessed part 10M can be adjacent to one end of the groove 10G and can be recessed from the top surface of the groove 10G to the lower side. One end of the arm 50 (refer to Figure 1 ) can be pivotally combined with the recessed part 10M.

[0067] For example, the mounting part 10MB can be formed by being recessed from the top surface of the top 13 to the lower side, and the battery Bt (refer to Figure 1 ) can be detachably mounted on the mounting part 10MB. The battery Bt can supply power to the display 70 (refer to Figure 1 ) and can be charged. As another example, the battery Bt can also be built between the frame 12 and the top 13.

[0068] The sheath 15 and the substrate 16 can be located between the frame 12 and the top 13 and can be combined with the frame 12. At least one device 16M can be mounted on the substrate 16. The device 16M can be an electronic device that generates heat during operation. The device 16M can be referred to as the heat-generating device 16M. For example, the device 16M can be an IC chip or an SOC (System On Chip).

[0069] Refer to Figure 7 , the frame 12 can be formed of a high-strength ultra-lightweight material. For example, the frame 12 can be formed by magnesium die-casting. The frame 12 can include a first beam part 121 and a second beam part 122. The frame 12 can be referred to as the bottom frame 12, or the box frame 12, or the bottom box frame 12, or the bottom shell frame 12.

[0070] The first beam portion 121 may form an inner beam 121. The inner beam 121 may include a first portion 121a, a second portion 121b, a third portion 121c, and a fourth portion 121d. The first portion 121a may face the fourth portion 121d. The second portion 121b may face the third portion 121c. The first portion 121a may connect one end of the second portion 121b and one end of the third portion 121c, and the fourth portion 121d may connect the other end of the second portion 121b and the other end of the third portion 121c. For example, the first portion 121a, the second portion 121b, the third portion 121c, and / or the fourth portion 121d may have the same cross-sectional shape as each other.

[0071] The second beam portion 122 may form outer beams 122a, 122b, 122c, 122d and cross beams 122e, 122f, 122g. The outer beams 122a, 122b, 122c, 122d may include a first portion 122a, a second portion 122b, a third portion 122c, and a fourth portion 122d. The first portion 122a may face the fourth portion 122d. The second portion 122b may face the third portion 122c. The first portion 122a may connect one end of the second portion 122b and one end of the third portion 122c, and the fourth portion 122d may connect the other end of the second portion 122b and the other end of the third portion 122c. For example, the first portion 122a, the second portion 122b, the third portion 122c, and / or the fourth portion 122d may have the same cross-sectional shape as each other.

[0072] The cross beams 122e, 122f, 122g may include vertical portions 122e, 122f and a horizontal portion 122g. The horizontal portion 122g may be parallel to the first portion 121a and / or the fourth portion 121d of the inner beam 121 between the first portion 121a and the fourth portion 121d of the inner beam 121. The horizontal portion 122g may cross the second portion 121b and the third portion 121c of the inner beam 121, and may cross the second portion 122b and the third portion 122c of the outer beams 122a, 122b, 122c, 122d.

[0073] The vertical portions 122e, 122f may include a first vertical portion 122e and a second vertical portion 122f. The first vertical portion 122e may be located between the second portion 121b and the third portion 121c of the inner beam 121, and may intersect the first portion 121a and / or the fourth portion 121d of the inner beam 121. The first vertical portion 122e may intersect the first portion 122a and / or the fourth portion 122d of the outer beams 122a, 122b, 122c, 122d. The second vertical portion 122f may be located between the second portion 121b and the third portion 121c of the inner beam 121, and may intersect the first portion 121a and / or the fourth portion 121d of the inner beam 121. The second vertical portion 122f may intersect the first portion 122a and / or the fourth portion 122d of the outer beams 122a, 122b, 122c, 122d.

[0074] Referring Figure 8 and Figure 9 , the horizontal portions 122g of the cross beams 122e, 122f, 122g may include a bottom 122g1, side portions 122g2, and a top 122g3. The bottom 122g1 may form the bottom surface of the horizontal portion 122g of the cross beams 122e, 122f, 122g.

[0075] The side portions 122g2 may bend and extend from the bottom 122g1. The top 122g3 may bend and extend from the side portions 122g2. For example, the bottom 122g1, the top 122g3, and the side portions 122g2 may be U-shaped as a whole.

[0076] Thereby, the rigidity of the frame 12 can be improved.

[0077] With Figure 7 and Figure 8 referring together Figure 10 and Figure 11 , the first portion 121a of the inner beam 121 may include a bottom 121a1, side portions 121a2, and a top 121a3. The bottom 121a1 may form the bottom surface of the first portion 121a of the inner beam 121.

[0078] The side portions 121a2 may bend and extend from the bottom 121a1. The top 121a3 may bend and extend from the side portions 121a2. For example, the top 121a3 and the side portions 121a2 may be H-shaped as a whole.

[0079] The first portion 122a of the outer beams 122a, 122b, 122c, 122d of the second beam portion 122 may include a bottom 122a1, side portions 122a2, and a top 122a3. The bottom 122a1 may form the bottom surface of the first portion 122a of the outer beams 122a, 122b, 122c, 122d.

[0080] The side part 122a2 can be bent and extended from the bottom part 122a1. The top part 122a3 can be bent and extended from the side part 122a2. For example, the bottom part 122a1, the top part 122a3, and the side part 122a2 can be U-shaped as a whole.

[0081] Thus, the rigidity of the frame 12 can be improved.

[0082] Refer to Figure 11 and Figure 7 As shown in FIGS. and, the first part 122a of the outer beams 122a, 122b, 122c, 122d can cross the third part 122c of the outer beams 122a, 122b, 122c, 122d. For example, the cross-section of the first part 122a of the outer beams 122a, 122b, 122c, 122d can be H-shaped as a whole, and the cross-section of the third part 122c can be H-shaped as a whole. Thus, the corner rigidity of the frame 12 can be improved.

[0083] The first part 122a of the outer beams 122a, 122b, 122c, 122d can cross the second part 122b of the outer beams 122a, 122b, 122c, 122d. For example, the cross-section of the first part 122a of the outer beams 122a, 122b, 122c, 122d can be H-shaped as a whole, and the cross-section of the second part 122b can be H-shaped as a whole. Thus, the corner rigidity of the frame 12 can be improved.

[0084] The fourth part 122d of the outer beams 122a, 122b, 122c, 122d can cross the third part 122c of the outer beams 122a, 122b, 122c, 122d. For example, the cross-section of the fourth part 122d of the outer beams 122a, 122b, 122c, 122d can be H-shaped as a whole, and the cross-section of the third part 122c can be H-shaped as a whole. Thus, the corner rigidity of the frame 12 can be improved.

[0085] The fourth part 122d of the outer beams 122a, 122b, 122c, 122d can cross the second part 122b of the outer beams 122a, 122b, 122c, 122d. For example, the cross-section of the fourth part 122d of the outer beams 122a, 122b, 122c, 122d can be H-shaped as a whole, and the cross-section of the second part 122b can be H-shaped as a whole. Thus, the corner rigidity of the frame 12 can be improved.

[0086] Refer to Figure 12, the cover 150 may include a lower case 151 and an upper cover 154. The lower case 151 may be in the shape of a tub that provides an accommodation space inside. For example, the lower case 151 may be an injection molded product formed of a flame retardant material. The lower case 151 may be a material with enhanced chemical resistance characteristics. To achieve light weight, the lower case 151 may have an opening. The lower plate 152 may be located at the bottom of the lower case 151. The lower plate 152 may include metal. The lower plate 152 may cover the opening of the lower case 151.

[0087] At least one electronic device 16M may be mounted on the substrate 16. For example, the substrate 16 may be a power supply unit PSU or a main board. The substrate 16 may be located on the lower plate 152.

[0088] The upper plate 153 may be located on the substrate 16. The upper plate 153 may include metal. The upper plate 153 may face the lower plate 152.

[0089] The upper cover 154 may cover the upper plate 153 and may enclose the lower case 151. The upper cover 154 may include metal. For example, the upper cover 154 may be aluminum. The upper cover 154 may be coupled to the lower case 151.

[0090] Accordingly, the chemical resistance of the substrate 16 on which a plurality of electronic devices 16M are mounted can be improved.

[0091] Referring to Figure 13 and Figure 14 , the cover 150 may include a docking opening 151d. The docking opening 151d may be formed on the side surface of the cover 150. A recessed side wall 151b may be formed around the docking opening 151d. The recessed side wall 151b may be recessed by forming a step from the outer side wall 151a of the cover 150 toward the inside.

[0092] The connectors 16M1, 16M2 mounted on the substrate 16 may be exposed to the outside through the docking opening 151d. A lower cover 151c may be formed on the lower side of the docking opening 151d. The lower cover 151c may support the connectors 16M1, 16M2 exposed from the docking opening 151d and / or the substrate 16 on the lower side of the connectors 16M1, 16M2. The lower cover 151c may protrude from the recessed side wall 151b. The outer surface of the lower cover 151c may correspond to the outer surface of the outer side wall 151a.

[0093] Clearances G1, G2 may be formed between the connectors 16M1, 16M2 and the docking opening 151d. The clearances G1, G2 may include a first clearance G1 and a second clearance G2. The first clearance G1 may be formed between the connectors 16M1, 16M2 and the left or right inner surface of the docking opening 151d. The second clearance G2 may be formed between the connectors 16M1, 16M2 and the upper inner surface of the docking opening 151d.

[0094] Accordingly, not only can the chemical resistance be improved, but also an external impact can be prevented from being applied to the main components.

[0095] Referring to Figure 15 and Figure 16 , the control boards 70a, 70b, 70c can be mounted or fixed to the back surface of the frame 75 of the display 70. For example, the control boards 70a, 70b, 70c can be a power supply board 70a or a daughter board 70b or a source PCB 70c. The control boards 70a, 70b, 70c can be mounted with a plurality of electronic devices, and heat can be generated when the plurality of electronic devices are driven.

[0096] The flexible cable CA can electrically connect the power supply board 70a and the display panel 71. The power supply board 70a can adjust the power and / or signal of the light source provided to the display 70. The power supply board 70a can be referred to as a light source driving board 70a. The daughter board 70b can process the image information provided to the display panel 71 (referring to Figure 1 ). The source PCB 70c can be mounted or fixed adjacent to the lower side of the frame 75 to the back surface of the frame 75. The COF 70CA can electrically connect the source PCB 70c and the display panel 71.

[0097] The shielding member 77 can cover the control boards 70a, 70b, 70c. The shielding member 77 can be referred to as a first shielding member 77 or a display shielding member 77 or a heat sink 77 or a heat dissipating fin 77. For example, the shielding member 77 can be a graphite sheet. The shielding member 77 can cover the power supply board 70a. The shielding member 77 can overlap at least a part of the power supply board 70a.

[0098] Referring to Figure 17 and Figure 18 , the housing 150 having the power supply unit 16 (referring to Figure 6 ) built therein can be mounted or coupled to the frame 12 of the base 10. The main board 19a can be adjacent to the housing 150 of the power supply unit 16, and can be mounted or coupled to the frame 12 of the base 10. The power supply unit 16 can supply the required power to the display device 1 (referring to Figure 1 ). The main board 19a can process the image information displayed through the display panel 71 and / or the voice information provided through the speaker assembly. The power supply unit 16 and / or the main board 19a can generate heat when driven.

[0099] The baffle 19b can cover a part of the main board 19a, and can be mounted or fixed to the frame 12. The baffle 19b can prevent the main board 19a from being physically damaged and electrically damaged.

[0100] The shielding member 18 can cover the main board 19a. The shielding member 18 can be referred to as the second shielding member 18 or the base shielding member 18 or the heat sink 18 or the heat dissipation fin 18. The shielding member 18 can overlap with all or at least a part of the main board 19a. For example, the shielding member 18 can be a graphite sheet.

[0101] Referring to Figure 19 and Figure 20 , the cover 20 can be opened and closed centering around the hinge 30 (referring to Figure 1 ), the display 70 can be received inside the base 10. The display 70 can be moved outside the base 10 through the arm 50 or received on the base 10. If the display 70 is received in the base 10, the display 70 and the base 10 can be arranged side by side and face each other.

[0102] The side cover 72 can cover the side of the display panel 71, and the rear cover 76 can be located behind the display panel 71 and combined with the side cover 72. The control board 70a can be located between the display panel 71 and the rear cover 76. For example, the control board 70a can be a light source driving board 70a, and when the control board 70a is driven, high temperature may be generated. The heat generated in the control board 70a can be discharged to the outside through the rear cover 76.

[0103] The main board 19a installed on the frame 12 of the base 10 can be located between the frame 12 and the top 13. When the main board 19a is driven, a large amount of heat may be generated, and the heat can be discharged to the outside through the top 13.

[0104] The first shielding member 77 can be located between the control board 70a and the rear cover 76. The first shielding member 77 can be fixed or adhered to the rear cover 76. For example, the first shielding member 77 can be a graphite sheet. The second shielding member 18 can be located between the main board 19a and the top 13.

[0105] Referring together to Figure 15 and Figure 17 , Figure 15 the back surface of the display 70 facing the base 10 can be shown, Figure 17 the front surface of the base 10 facing the display 70 can be shown.

[0106] The cover 150 built-in with the power supply unit 16 (referring to Figure 6 ) may generate high temperature. The light source driving board 70a may generate high temperature. When the display 70 is received in the base 10, the cover 150 built-in with the power supply unit 16 may not overlap with the light source driving board 70a. Thus, the heat generated in the cover 150 and the heat generated in the light source driving board 70a can be evenly dispersed in the display device 1.

[0107] When the display 70 is housed in the base 10, the light source driving board 70a and the main board 19a can overlap at least a part. The heat generated in the light source driving board 70a and the heat generated in the main board 19a may be discharged to each other and accumulate.

[0108] The heat generated in the light source driving board 70a can be dissipated by being dispersed in the horizontal direction through the first shielding member 77. The heat generated in the main board 19a can be dissipated by being dispersed in the horizontal direction through the second shielding member 18. For example, the first shielding member 77 and the second shielding member 18 can overlap a part or at least a part. As another example, the first shielding member 77 can also be aligned without overlapping with the second shielding member 18. As another example, the first shielding member 77 can form a boundary with the second shielding member 18 and be adjacent. Thus, the heat generated in the main board 19a and the heat generated in the light source driving board 70a can be dispersed without accumulating.

[0109] Thus, even when the display 70 is housed in the base 10, the heat generated by driving the display 70 can be evenly dispersed and dissipated.

[0110] Refer to Figure 21 , the second shielding member 18 can include a first piece portion 18a, a second piece portion 18b, and a third piece portion 18c.

[0111] The first piece portion 18a can be located between the main board 19a and the light source driving board 70a, and can cover the main board 19a. The second piece portion 18b can extend from the first piece portion 18a. The second piece portion 18b can form an inclination that decreases from the first piece portion 18a.

[0112] The second piece portion 18b can bend and extend from the first piece portion 18a toward the bottom of the frame 12 of the base 10. The third piece portion 18c can be located on the bottom of the frame 12 of the base 10, and can cover the bottom of the frame 12.

[0113] The first piece portion 18a can have a negative slope toward the second piece portion 18b. The slope of the first piece portion 18a can be smaller than the slope of the second piece portion 18b.

[0114] Thus, the moisture that may be formed on the second shielding member 18 covering the main board 19a as the main board 19a is opened and closed can be discharged via the first piece portion 18a, the second piece portion 18b, and the third piece portion 18c.

[0115] Refer to Figures 22 to 24 , the bumper 80 can include a main body 81 and a wall 83. The main body 81 can be a first member 81 that extends relatively wide and has a predetermined thickness. The wall 83 can be a second member 83 that extends in a direction intersecting the extending direction of the main body 81. The wall 83 can be formed integrally with the main body 81.

[0116] A groove 82 may be formed on the top surface of the main body 81 and may be adjacent to the wall 83. There may be a plurality of grooves 82. The plurality of grooves 82 may include a first groove 82a and a second groove 82b. The first groove 82a may extend along the inner side surface of the wall 83 and may be adjacent to the second groove 82b. The second groove 82b may extend along the inner side surface of the wall 83 and may be adjacent to the first groove 82a.

[0117] An apron 83a may be formed on the outer side of the wall 83. The apron 83a may be formed larger than the wall 83 on the outer side of the wall 83. The left and right ends and / or the lower end of the apron 83a may extend outside the wall 83.

[0118] The insert 85 may extend downward from the main body 81 and may face the wall 83 and / or the apron 83a. The insert 85 may be parallel to the apron 83a. The insert 85 may face the apron 83a with the wall 83 as a reference. The fixing rib 85a may protrude and be formed from the inner side surface of the insert 85. The sealing rib 85b may protrude and be formed from the outer side surface of the insert 85. There may be a plurality of sealing ribs 85b, and the plurality of sealing ribs 85b may be formed parallel to and spaced apart from each other.

[0119] Reference Figures 25 to 27 , the buffer member 80 may be coupled to the side cover 72 of the display 70 (reference Figure 1 ). The main body 81 of the buffer member 80 may contact the back surface of the frame 75 or be supported by the back surface of the frame 75. The wall 83 of the buffer member 80 may be located on the cut-out part 72c of the side cover 72. The cut-out part 72c of the side cover 72 may be inserted between the insert 85 of the buffer member 80 and the apron 83a of the wall 83. The depth of the cut-out part 72c may correspond to the height of the wall 83.

[0120] The rear cover 76 may cover the back surface of the frame 75 and may be coupled to the frame 75 and / or the side cover 72. The coupling protrusion 76a may protrude from the front surface of the rear cover 76 at the corners of the rear cover 76. The coupling protrusion 76a may be inserted into the groove 82 of the buffer member 80.

[0121] The guide panel 79 may be inserted between the frame 75 and the side cover 72 and may support the back surface of the display panel 71 near the edge. The guide panel 79 may have a locking portion 79a. The locking portion 79a may protrude from the outer side surface of the guide panel 79 at the corners of the guide panel 79. When the buffer member 80 is inserted into the cut-out part 72c of the side cover 72, the fixing rib 85a of the buffer member 80 may be engaged and fixed with the locking portion 79a of the guide panel 79.

[0122] Reference Figure 28 and Figure 29, the optical layer 73 may be located between the frame 75 and the display panel 71. The guide panel 79 may be coupled to the frame 75 and may support the back surface of the display panel 71 near the edge. The display panel 71 may be fixed to the guide panel 79 by an adhesive member AD. The inner top 72b may cover the front surface of the edge of the display panel 71 and may be coupled to the guide panel 79 between the guide panel 79 and the side cover 72. The buffer layer BF is fixed to the inner side of the inner top 72b and may face the front surface of the display panel 71. The buffer layer BF may form a gap with the front surface of the display panel 71.

[0123] The side cover 72 may cover the front surface of the display panel 71 near the edge and may cover the side surfaces of the guide panel 79 and / or the inner top 72b. The main body 81 of the buffer member 80 is located between the frame 75 and the rear cover 76, and the wall 83 of the buffer member 80 may connect the side cover 72 and the rear cover 76. The peripheral edge 83a of the buffer member 80 may protrude more than the outer surface of the side cover 72.

[0124] Thus, it is possible to absorb the impact applied to the corners of the display 70 that may occur when the display 70 is received in the base 10 (refer to Figure 19 ) to protect the display 70.

[0125] Refer to Figure 30 , the cover 20 may include an outer cover 210, an intermediate frame 240, and an inner cover 250. The outer cover 210 may be in the shape of a tub and may have an accommodation space provided therein. The intermediate frame 240 may be coupled to the inner side of the outer cover 210, and the inner cover 250 may be coupled to the intermediate frame 240. The intermediate frame 240 may be located between the outer cover 210 and the inner cover 250.

[0126] The speaker assembly 220 may be located between the intermediate frame 240 and the outer cover 210 and may be coupled or fixed to the outer cover 210. The hinge assembly 230 may be fixed to the outer cover 210. The hinge assembly 230 may be located between the intermediate frame 240 and the outer cover 210.

[0127] Refer to Figure 31 , the outer cover 210 may include a central portion 211, side portions 212, and a plurality of ribs FR, SR, CR. The central portion 211 may form the flat plate of the outer cover 210. The side portions 212 may extend from the central portion 211 and may form walls or dams on the outer contour of the central portion 211.

[0128] A plurality of ribs FR, SR, CR may include a center rib FR, side ribs SR, and corner ribs CR. A plurality of center ribs FR may be formed on the inner surface of the center portion 211. The plurality of center ribs FR may form a matrix that intersects with each other. A plurality of side ribs SR may be formed on the inner surface of the side portion 212. The side ribs SR may be connected to the center ribs FR. A plurality of corner ribs CR may be formed on the inner surface of the corners formed by the side portions 212.

[0129] Accordingly, the rigidity of the outer cover 210 can be improved, and it will not be damaged due to impacts applied to the side and / or corners of the outer cover 210.

[0130] Referring to Figure 32 , the speaker assembly 220 may be fixed to the inside of the outer cover 210. There may be a plurality of speaker assemblies 220. The plurality of speaker assemblies 220 may include a first speaker assembly 220A and a second speaker assembly 220B. The first speaker assembly 220A may be a left speaker, and the second speaker assembly 220B may be a right speaker. The first speaker assembly 220A and the second speaker assembly 220B may provide stereo sound.

[0131] There may be a plurality of speaker cables SL1, SL2. The first speaker cable SL1 may be connected to the first speaker assembly 220A. The second speaker cable SL2 may be connected to the second speaker assembly 220B. The speaker cables SL1, SL2 may supply power and voice signals to the speaker assembly 220. The speaker cables SL1, SL2 may be routed inside the outer housing 210. The speaker cables SL1, SL2 may pass through the hinge assembly 230.

[0132] Referring to Figure 33 and Figure 34 , the hinge assembly 230 may include an upper bracket 231, a lower bracket 232, a hinge shaft 233, and a reinforcing member 236. The upper bracket 231 may be in the shape of a bent plate. The upper bracket 231 and the lower bracket 232 may be connected by the hinge shaft 233. An elastic member 234 may be coupled to the hinge shaft 233. For example, the elastic member 234 may be a helical spring 234, and the hinge shaft 233 may be inserted into the helical spring 234. One end of the helical spring 234 may be supported on the lower bracket 232, and the other end of the helical spring 234 may be supported on the upper bracket 231.

[0133] The reinforcing member 236 may be referred to as a reinforcing bracket 236. The reinforcing member 236 may include a fixing portion 236a and an expanding portion 236b. The fixing portion 236a may be combined or fixed to the upper bracket 231 by a fastening member f. The expanding portion 236b may extend from the fixing portion 236a. The expanding portion 236b may be L-shaped as a whole. The expanding portion 236b may be fixed to the outer cover 210 (refer to Figure 32)。The reinforcing member 236 may further include a cover portion 236c. The cover portion 236c may extend from the fixing portion 236a. The cover portion 236c may cover the hinge shaft 233.

[0134] The hinge shaft 233 may include a shaft body 233a, a receiving groove 233b, and a cap 233c. The shaft body 233a may hinge-connect the upper bracket 231 and the lower bracket 232. The receiving groove 233b may be recessed inward from the outer surface of the shaft body 233a and extend longitudinally. One end of the receiving groove 233b may be formed at the end of the shaft body 233a, and the other end of the receiving groove 233b may be formed on the side surface of the shaft body 233a. The receiving groove 233b may be L-shaped as a whole.

[0135] The speaker cables SL1, SL2 may be routed in the receiving groove 233b. The speaker cables SL1, SL2 may be inserted from one end of the receiving groove 233b and routed toward the other end of the receiving groove 233b. The cap 233c may be combined with the shaft body 233a while covering the receiving groove 233b. The cap 233c may fixedly accommodate the speaker cables SL1, SL2 in the receiving groove 233b.

[0136] Referring to Figure 35 and Figure 36 , the upper bracket 231 may be fixed to the inner side surface of the outer cover 210. The lower bracket 232 may be fixed to the frame 12 of the base 10.

[0137] The speaker cables SL1, SL2 (refer to Figure 32 ) may be routed to be received in the hinge shaft 233 of the hinge assembly 230 inside the outer cover 210. The speaker cables SL1, SL2 may be routed through the hinge shaft 233 to the base 10.

[0138] Referring to Figure 37 , the inner cover 250 may be coupled to the intermediate frame 240. The inner cover 250 may be detachably coupled or fixed to the intermediate frame 240. The inner cover 250 may be coupled to the intermediate frame 240 through coupling sets D, E, F, G. The coupling sets D, E, F, G may be plural.

[0139] The first coupling set D may be adjacent to the first long side LS1 of the cover 20 and may be arranged along the first long side LS1. The second coupling set E may be arranged adjacent to the first short side SS1 and / or the second short side SS2. For example, the second coupling set E may be closer to the first long side LS1 than the second long side LS2.

[0140] The third coupling group F can be disposed in a central region between the first long side LS1 and the second long side LS2 and / or between the first short side SS1 and the second short side SS2. The fourth coupling group G can be adjacent to the second long side LS2 and can be disposed along the second long side LS2. The fourth coupling group G can be disposed along the first short side SS1 and / or the second short side SS2.

[0141] Referring to Figure 38 , the first coupling group D can include an insertion end 241 and a retaining hole 251. The intermediate frame 240 can include the insertion end 241. The insertion end 241 can protrude and extend from the intermediate frame 240. The retaining hole 251 can be formed on the bottom surface of the inner cover 250. The retaining hole 251 can have a hole that extends long. The insertion end 241 can be inserted into the retaining hole 251. The insertion end 241 can hold the retaining hole 251, thereby preventing the inner cover 250 from moving away from or detaching from the intermediate frame 240.

[0142] Referring to Figure 39 , the second coupling group E can include an insertion hole 242 and a retaining member 252. The insertion hole 242 can be formed in the intermediate frame 240. The retaining member 252 can protrude and bend from the inner side surface of the inner cover 250. For example, the retaining member 252 can be in the shape of a hook. The retaining member 252 can be inserted into the insertion hole 242 and can hold one side surface of the insertion hole 242. The retaining member 252 can pull the insertion hole 242, thereby preventing the inner cover 250 from moving away from or detaching from the intermediate frame 240.

[0143] Referring to Figure 40 , the third coupling group F can include a retaining end 243 and a retaining rod 253. The intermediate frame 240 can include the retaining end 243. The retaining end 243 can extend long from the intermediate frame 240. The inner cover 250 can include the retaining rod 253. The retaining rod 253 can protrude and bend from the inner side surface of the inner cover 250. The retaining end 243 can be placed on the retaining rod 253. The retaining end 243 can hold the retaining rod 253, thereby preventing the inner cover 250 from moving away from or detaching from the intermediate frame 240.

[0144] Referring to Figure 41, the fourth connection group G may include a movable rod 244 and a rod hole 254. The inner cover 250 may include the rod hole 254, and the movable rod 244 may extend from the intermediate frame 240. The rod hole 254 may be formed to protrude from the inner side surface of the inner cover 250. The movable rod 244 may be inserted into the rod hole 254 of the inner cover 250. The movable rod 244 may include a first portion 244a, a second portion 244b, a third portion 244c, and a fourth portion 244d. The first portion 244a may protrude and extend from the intermediate frame 240. The second portion 244b may be bent and extended from the first portion 244a at a first angle. For example, the first angle may be an obtuse angle. The third portion 244c may be bent and extended from the second portion 244b at a second angle. For example, the second angle may be an acute angle. The fourth portion 244d may be bent and extended from the third portion 244c at a third angle. For example, the third angle may be greater than the second angle and less than the first angle. The fourth portion 244d may be locked in the rod hole 254. The user may push the first portion 244a and / or the second portion 244b by inserting a tool between the inner cover 250 and the intermediate frame 240, so that the movable rod 244 is disengaged from the rod hole 254.

[0145] Referring to Figures 42 to 44 , the locking units 10a, 10b may include a lower body 110b, an upper body 110c, and a locking rod 110a. The lower body 110b may be coupled to the outer side surface of the bottom 11 of the base 10. The lower body 110b may be coupled or fixed to the frame 12 by a fastening member f. The upper body 110c may be located between the outer cover 210 of the cover 20 and the intermediate frame 240, and may be coupled or fixed to the outer cover 210. The upper body 110c may extend long from the cover 20 toward the base 10.

[0146] The lower body 110b may be in contact with the outer surface of the bottom 11 of the base 10, and the lower body 110b may include: a fixing portion 111, fixed to the frame 12; and a lower rib 112, protruding from the upper end surface of the fixing portion 111 and facing the upper body 110c.

[0147] The upper body 110c may include: a fixing portion 118, fixed to the outer cover 210 of the cover 20; and an upper hook 117, extending long from the fixing portion 118 and bent toward the locking rod 110a, and engaging with the lower rib 112.

[0148] The lock lever 110a may include a lever body 113, a locking hook 114, and a pivot bushing 115b coupled to a pivot pin 115a. The pivot pin 115a may extend longitudinally along the axial direction of the pivot shaft. The lock lever 110a may rotate about the pivot pin 115a. The lever body 113 may extend longitudinally and may seesaw or pivot or tilt relative to the lower body 110b. The pivot bushing 115b may connect the lever body 113 of the lock lever 110a and the lower body 110b. About the pivot pin 115a, the lock lever 110a may pivot or tilt or seesaw relative to the lower body 110b. The locking hook 114 may be formed at the upper end of the lever body 113 and may bend downward from the lever body 113 toward the lower body 110b and / or the upper body 110c.

[0149] When the cover 20 is closed by covering the base 10, the upper hook 117 of the upper body 110c may contact or engage with the lower rib 112 of the lower body 110b. As the lock lever 110a rotates about the pivot pin 115a, the locking hook 114 may be locked to the upper hook 117 of the upper body 110c. Thus, the cover 20 may be fixed to the base 10.

[0150] Referring Figure 45 , the lock lever 110a may include: a pivot bushing 115b located between the lever body 113 and the bottom housing 10; and a cam 116 extending from the pivot bushing 115b.

[0151] The pivot bushing 115b may be connected to the lock lever 110a. The pivot bushing 115b and the lock lever 110a may be formed integrally. The pivot bushing 115b may extend along the axial direction of the pivot shaft of the lock lever 110a. The pivot bushing 115b may rotate about the pivot shaft RX of the lock lever 110a. The lock lever 110a may pivot integrally with the pivot bushing 115b. The pivot bushing 115b may be coupled to the bottom housing 10 by the pivot pin 115a. For example, the lock lever 110a may be pin-coupled to the bottom housing 10 by the pivot pin 115a passing through the pivot bushing 115b. The pivot shaft of the lock lever 110a may pass through the pivot pin 115a. That is, the pivot pin 115a may be located on the pivot shaft. The pivot shaft of the lock lever 110a may be an imaginary axis that becomes the pivot center of the lock lever 110a. The pivot pin 115a and the pivot bushing 115b of the lock lever 110a may be referred to as physical devices extending along the axial direction of the pivot shaft.

[0152] The cam 116 can be formed on the rod body 113 at the periphery of the pivot bushing 115b. The cam 116 can extend radially from the pivot bushing 115b. The cam 116 can extend in the rotational direction of the pivot axis RX. The cam 116 can be connected to the rod body 113. The cam 116 can be integrally formed with the pivot bushing 115b. For example, the cam 116 can be integrally formed with the rod body 113 and the pivot bushing 115b. Thus, when the pivot bushing 115b rotates, the cam 116 and the rod body 113 can pivot together.

[0153] When the pivot bushing 115b rotates, the cam 116 can pivot while contacting the bottom housing 10. The cam 116 can include ramps 116a, 116b that contact the bottom housing 10. The ramps 116a, 116b can be part of the circumferential surface of the cam 116. The ramps 116a, 116b can refer to the area or outer surface where the pivoting cam 116 contacts the bottom housing 10. The distance between the ramps 116a, 116b and the pivot axis can change as the cam 116 pivots. The ramps 116a, 116b can include: an opening ramp, the distance from the pivot axis becoming farther as the locking of the locking units 10a, 10b is released; and a closing ramp, the distance from the pivot axis becoming farther as the locking units 10a, 10b are locked. The ramps 116a, 116b can include a nose formed between the opening ramp and the closing ramp. The nose can be the position on the ramps 116a, 116b that is farthest from the pivot axis. The nose can protrude radially from the pivot bushing 115b.

[0154] Hereinafter, the distance between the ramps 116a, 116b and the pivot axis can be referred to as the ramp height.

[0155] The ramps 116a, 116b can be divided into a first ramp 116b and a second ramp 116a with the nose as a reference.

[0156] The first ramp 116b can contact the bottom housing 10. The first ramp 116b can be part of the ramps 116a, 116b. The first ramp 116b can protrude radially from the pivot bushing 115b. The first ramp 116b can protrude in the direction opposite to the rod body 113 with the pivot bushing 115b as a reference. The first ramp 116b can extend in the rotational direction of the pivot axis. The lock lever 110a locked to the top housing 20 can contact the bottom housing 10 by means of the first ramp 116b.

[0157] The second slope 116a may extend from the first slope 116b. The second slope 116a may be part of the slopes 116a, 116b. The second slope 116a may extend in the rotational direction of the pivot axis. For example, the second slope 116a may extend from the first slope 116b in the clockwise direction. The second slope 116a of the lock lever 110a that is locked to the top case 20 may be spaced apart from the bottom case 10.

[0158] The cam 116 may include a first portion 116c extending from the slopes 116a, 116b. The first portion 116c may extend from the first slope 116b. The first portion 116c may extend in the rotational direction of the pivot axis. The first portion 116c may extend from the first slope 116b toward the lever body 113. The first portion 116c may form a step with the first slope 116b. For example, the first portion 116c may extend counterclockwise about the pivot axis while getting lower from the first slope 116b. The first portion 116c may not contact the bottom case 10.

[0159] Hereinafter, the first slope 116b may be referred to as the third portion 116b, and the second slope 116a may be referred to as the second portion 116a.

[0160] Refer to Figure 46 , the first slope 116b, the second slope 116a, the first portion 116c extending from the first slope 116b, and the fourth portion 116d extending from the second slope 116a of the cam 116 that contact the bottom case 10 will be described.

[0161] The slopes 116a, 116b may include a nose end P2 protruding radially from the pivot shaft sleeve 115b. The nose end P2 may be located between the first slope 116b and the second slope 116a. The distance between the nose end P2 and the pivot axis RX may be greater than the distance between the first slope 116b and the pivot axis RX. The distance between the nose end P2 and the pivot axis RX may be greater than the distance between the second slope 116a and the pivot axis RX. For example, the slopes 116a, 116b may include a nose end at the second position P2 located between the first slope 116b and the second slope 116a. For example, the distance between the second position P2 and the pivot axis RX may be greater than the distance between the first slope 116b and the pivot axis RX. For example, the distance between the second position P2 and the pivot axis RX may be greater than the distance between the second slope 116a and the pivot axis RX.

[0162] The first ramp 116b can protrude radially from the pivot bushing 115b. The first ramp 116b can extend in the rotational direction of the pivot axis RX. The first ramp 116b can extend from the nose end P2 that protrudes radially from the pivot bushing 115b. For example, the first ramp 116b can extend from the nose end P2 at the second position P2 to the third position P3 spaced apart in the counterclockwise direction with respect to the pivot axis RX. That is, the first ramp 116b can be formed between the second position P2 and the third position P3. The distance between the second position P2 and the pivot axis RX can be greater than the distance between the third position P3 and the pivot axis RX. The distance between the first ramp 116b and the pivot axis RX can decrease as it moves away from the nose end P2. The first ramp 116b can be formed to protrude radially from the pivot bushing 115b. For example, the first ramp 116b can be a convex curved surface formed on the cam 116.

[0163] The lock lever 110a locked to the top case 20 can contact the bottom case 10 by means of the first ramp 116b. The first ramp 116b can include a locking point Pb that is a position where the locked lock lever 110a contacts the bottom case 10.

[0164] The first ramp 116b can be divided into a nose end portion 1162b and a protruding portion 1164b centered on the locking position Pb. The first ramp 116b can include the nose end portion 1162b formed between the locking position Pb and the nose end P2. The nose end portion 1162b can extend from the nose end P2 in the counterclockwise direction to the locking position Pb. The nose end portion 1162b can be formed as a convex curved surface protruding radially with respect to the pivot axis RX.

[0165] The first ramp 116b can include the protruding portion 1164b extending from the locking position Pb. The protruding portion 1164b can extend from the nose end portion 1162b. For example, the protruding portion 1164b can extend from the locking position Pb in the counterclockwise direction with respect to the pivot axis RX to the third position P3. The protruding portion 1164b can be formed as a convex curved surface protruding radially with respect to the pivot axis RX.

[0166] The curvature of the nose end portion 1162b can be smaller than the curvature of the protruding portion 1164b. That is, the curvature of the convex curved surface formed on the protruding portion 1164b can be greater than the curvature of the convex curved surface formed on the nose end portion 1162b, thereby improving the locking performance of the locking units 10a, 10b. The ramp height of the first ramp 116b decreases as it gets closer to the third position P3 from the nose end P2, and the rate of decrease of the ramp height in the protruding portion 1164b can be greater than the rate of decrease of the ramp height in the nose end portion 1162b.

[0167] The first part 116c can extend from the first ramp 116b. The first part 116c can extend from the protrusion 1164b. The first part 116c can be a part of the cam 116 extending from the third position P3. The distance between the first part 116c and the pivot axis RX can decrease as it gets farther away from the ramps 116a, 116b. The distance between the first part 116c and the pivot axis RX can be referred to as the height of the first part 116c.

[0168] The first part 116c can form a step with the first ramp 116b. The step can be a difference in height. The first part 116c and the first ramp 116b can be sharply connected. The first part 116c can include a recess 1162c that is sharply connected to the first ramp 116b. The recess 1162c can be formed to be recessed in the direction of the center of the pivot axis RX. For example, the recess 1162c can extend recessedly from the third position P3 in the counterclockwise direction of the pivot axis RX, and the connecting portion of the recess 1162c and the first ramp 116b can be sharply formed. The height of the recess 1162c can decrease as it gets farther away from the first ramp 116b.

[0169] The first part 116c can include a protrusion 1164c extending from the recess 1162c. The protrusion 1164c can smoothly extend from the recess 1162c. The first part 116c can include an inflection point Pc located between the protrusion 1164c and the recess 1162c. The inflection point Pc can be the position where the depression and protrusion of the first part change. For example, the protrusion 1164c can extend protrudedly from the inflection point Pc in the counterclockwise direction of the pivot axis RX. The height of the protrusion 1164c can decrease as it gets farther away from the inflection point Pc.

[0170] The locking units 10a, 10b can include a stopper 111b that adjusts the pivoting angle of the locking lever 110a. The stopper 111b can set the maximum angle of the locking lever 110a. The locking lever 110a can pivot until it contacts the stopper 111b. The locking lever 110a in contact with the stopper 111b can no longer pivot. Thereby, the stability and durability of the locking structure of the display device can be improved.

[0171] The stopper portion 111b may extend in the axial direction of the pivot axis RX. The stopper portion 111b may be radially spaced from the first portion 116c toward the pivot axis RX. A gap may be formed between the stopper portion 111b and the first portion 116c. The stopper portion 111b may be formed on the lower body 110b. The stopper portion 111b may protrude from the fixing portion 111 of the lower body 110b in the axial direction of the pivot axis RX of the locking lever 110a. The cam 116 may be located between the stopper portion 111b and the pivot axis RX. The first portion 116c may be located between the stopper portion 111b and the pivot axis RX. The stopper portion 111b may be formed in a shape corresponding to the recessed portion 1162c.

[0172] Referring Figure 47 , it may include a third surface S3 forming the first ramp 116b, a second surface S2 forming the second ramp 116a, a first surface S1 forming the first portion 116c, and a fourth surface S4 forming the fourth portion 116d.

[0173] The third surface S3 may be formed on the outer side surface of the cam 116. The third surface S3 may be a circumferential surface extending along the circumference of the cam 116. The third surface S3 may correspond to the first ramp 116b. The third surface S3 may be a part of the circumferential surface of the cam 116. The third surface S3 may be a convex curved surface formed along the circumference of the cam 116.

[0174] The third surface S3 may include a nose end surface S31 corresponding to the nose end portion 1162b. The nose end surface S31 may be a convex curved surface extending along the circumference of the cam 116. The nose end surface S31 may have a curvature. The nose end surface S31 may be formed in a curved manner.

[0175] The third surface S3 may include a convex surface S32 corresponding to the protruding portion 1164b. The convex surface S32 may extend from the nose end surface S31. The convex surface S32 may be a convex curved surface extending along the circumference of the cam 116. The convex surface S32 may have a curvature. The curvature of the convex surface S32 may be greater than the curvature of the nose end surface S31. The area of the convex surface S32 may be larger than the area of the nose end surface S31.

[0176] The second surface S2 may be formed on the outer side surface of the cam 116. The second surface S2 may be a circumferential surface extending along the circumference of the cam 116. The second surface S2 may be another part of the circumferential surface of the cam 116. The second surface S2 may be a flat surface formed along the circumference of the cam 116. The second surface S2 may extend flatly from the third surface S3.

[0177] The nose end P2 may be located between the third surface S3 and the second surface S2. The nose end P2 may be the line where the third surface S3 and the second surface S2 meet. The nose end P2 may be a line extending in the axial direction of the pivot axis RX between the third surface S3 and the second surface S2.

[0178] The first surface S1 may be formed on the outer side surface of the cam 116. The first surface S1 may be a circumferential surface extending along the circumference of the cam 116. The first surface S1 may be another part of the circumferential surface of the cam 116. The first surface S1 may be a curved surface formed along the periphery of the cam 116. The first surface S1 may extend convexly from the third surface S3.

[0179] The first surface S1 may include a concave surface S11 corresponding to the recessed portion 1162c. The concave surface S11 may be a concave curved surface extending along the periphery of the cam 116. The concave surface S11 may be formed in a curved manner. The boundary where the concave surface S11 and the third surface S3 meet may be formed sharply.

[0180] The first surface S1 may include a convex surface S12 corresponding to the protruding portion 1164c. The convex surface S12 may be a convex curved surface extending along the periphery of the cam 116. The convex surface S12 may be formed in a curved manner.

[0181] The inflection point Pc may be located between the convex surface S12 and the concave surface S11. The inflection point Pc may be the line where the concave surface S11 and the convex surface S12 meet. The inflection point Pc may be a line located between the convex surface S12 and the concave surface S11 and extending along the axial direction of the pivot axis RX.

[0182] The cam 116 may include a fourth portion 116d extending from the second ramp 116a. The fourth portion 116d may extend in a direction opposite to the first portion 116c with respect to the ramps 116a, 116b as a reference. The first portion 116c and the fourth portion 116d may be spaced apart from each other.

[0183] The fourth surface S4 may be formed on the outer side surface of the cam 116. The fourth surface S4 may be a circumferential surface extending along the circumference of the cam 116. The fourth surface S4 may be another part of the circumferential surface of the cam 116. The fourth surface S4 may correspond to the fourth portion 116d. The fourth surface S4 may be a curved surface formed along the periphery of the cam 116. The fourth surface S4 may extend convexly from the second surface S2.

[0184] Refer to Figure 48 , and describe the process of unlocking the locking units 10a, 10b.

[0185] The lock lever 110a may be unlocked as it detaches from the top housing 20. The lock lever 110a may be unlocked as it detaches from the upper body 110c. The lock lever 110a may be unlocked as the locking hook 114 detaches from the upper body 110c. The user may pull the locking hook 114 to unlock the locking state of the locking units 10a, 10b.

[0186] If the user pulls the lock lever 110a, the lock lever 110a can pivot in a direction away from the top housing 20. If the user pulls the lock lever 110a, the lock lever 110a can pivot counterclockwise about the pivot axis RX. As the lock lever 110a pivots, the cam 116 and the pivot shaft sleeve 115b can pivot together. As the lock lever 110a pivots, the ramp height can increase. The contact portion of the cam 116 that contacts the bottom housing 10 can move from the first ramp 116b towards the nose end P2.

[0187] Referring to Figure 49 , when the locking units 10a, 10b are unlocked, the nose end P2 can contact the bottom housing 10.

[0188] The ramp height can increase as the lock lever 110a rotates counterclockwise. The contact portion of the cam 116 that contacts the bottom housing 10 can move from the locked position Pb to the second position P2 where the nose end P2 is located. During this process, the height of the ramp can increase. To separate the lock lever 110a from the top housing 20, the user can apply a driving force.

[0189] If the lock lever 110a rotates, the distance between the stopper 111b and the recess 1162c can decrease. As the lock lever 110a rotates, the bottom housing 10 can contact along the first ramp 116b of the cam 116. To unlock the lock lever 110a, the user can rotate the lock lever 110a by a first pivot angle R1. The first pivot angle R1 can be the angle by which the first ramp 116b extends in the rotational direction about the pivot axis RX.

[0190] The tangent of the nose end P2 and the first ramp 116b can form an angle. The tangent of the nose end P2 can be a line that is orthogonal to the line connecting the pivot axis RX and the nose end P2 and that touches the nose end P2. For example, the tangent of the nose end P2 and the nose end portion 1162b can form a first angle theta1. Thus, the locking holding force of the locking unit can be formed.

[0191] The tangent of the nose end P2 and the second ramp 116a can form an angle. For example, the tangent of the nose end P2 and the second ramp 116a can form a second angle theta2.

[0192] The second angle theta2 formed by the tangent of the nose end P2 and the second ramp 116a can be greater than the first angle theta1 formed by the tangent of the nose end P2 and the first ramp 116b.

[0193] Referring to Figure 50 , the unlocked state of the locking unit will be described.

[0194] If the lock lever 110a is fully pulled out from the top case 20, the locking units 10a, 10b can be in an unlocked state. If the user fully pulls the lock lever 110a, the locking units 10a, 10b can pivot by a maximum angle. At this time, the stopper 111b can contact the recessed portion 1162c of the cam 116. The stopper 111b in contact with the recessed portion 1162c can resist the force of the user pulling the lock lever 110a. Thus, the stopper 111b can form the maximum angle of the lock lever 110a.

[0195] If the lock lever 110a is fully pulled, the cam 116 can contact the bottom case 10 by using the second slope 116a. At this time, the portion of the cam 116 in contact with the bottom case 10 can move from the nose end P2 to the second slope 116a. The straight surface of the second slope 116a can be in close contact with the bottom case 10. Since the second slope 116a is formed as a straight surface, the locking units 10a, 10b can form a holding force in the unlocked state.

[0196] Refer to Figure 51 , when the locking of the locking units 10a, 10b is released, the second slope 116a can contact the bottom case 10.

[0197] As the portion of the cam 116 in contact with the bottom case 10 moves from the nose end P2 to the second slope 116a, the heights of the slopes 116a, 116b can gradually become lower. Since the direction in which the lock lever 110a rotates is parallel to the direction in which the heights of the slopes 116a, 116b gradually become lower, the lock lever 110a passing through the nose end P2 automatically enters the unlocked state.

[0198] The second slope 116a can include an unlocking point Pa where the fully pulled lock lever 110a contacts the bottom case 10. The unlocking point Pa can be the position where the slope height of the second slope 116a is the lowest. That is, the slope height of the unlocking point Pa can be smaller than the slope heights of other positions of the second slope 116a.

[0199] The slope height of the unlocking point Pa can be smaller than the slope height of the locking point Pb. The difference between the slope height of the unlocking point Pa and the slope height of the nose end P2 can be greater than the difference between the slope height of the locking point Pb and the slope height of the nose end P2. Thus, the holding force in the unlocked state of the locking unit can be improved. In addition, the driving force that the user needs to apply in the locked state of the locking unit can be reduced. Thus, the usability of the locking unit can be improved.

[0200] The fourth portion 116d may extend from the second slope 116a. The fourth portion 116d may extend from the first position P1 of the second slope 116a. The first position P1 of the second slope 116a may be an end opposite to the second position P2 based on the unlocking position Pa. For example, the first position P1 may be one end of the second slope 116a, and the second position P2 may be the other end of the second slope 116a. The fourth portion 116d may extend clockwise from the first position P1 of the second slope 116a with the pivot axis as the center. At this time, the distance between the fourth portion 116d and the pivot axis may be greater than the height of the second slope 116a. Thus, in order to move the contact portion of the cam 116 from the unlocking position Pa where the slope height is the lowest to the fourth portion 116d, an additional driving force of the user may be required. That is, the lock bar 110a that contacts the bottom housing 10 using the second slope 116a can form an unlocking state retaining force.

[0201] Reference Figure 52 , the nose end P2 may protrude from the ramps 116a, 116b in the radial direction of the pivot axis RX.

[0202] The ramps 116a, 116b may include: a first ramp 116b extending from the nose end P2 toward one rotation direction of the pivot axis RX; and a second ramp 116a extending toward another rotation direction of the pivot axis RX. The first ramp 116b and the second ramp 116a may be connected at the nose end P2. The first ramp 116b and the second ramp 116a may be connected sharply at the nose end P2. For example, the ramps 116a, 116b include: a first ramp 116b extending from the nose end P2 toward the counterclockwise direction of the pivot axis RX; and a second ramp 116a extending toward the clockwise direction of the pivot axis RX; the first ramp 116b and the second ramp 116a may be connected sharply at the nose end P2.

[0203] The first slope 116b and the second slope 116a may form an angle. That is, the first slope 116b and the second slope 116a may form an angle and be connected at the nose tip P2. The second slope 116a having a flat straight surface and the first slope 116b having a curved surface may form an angle and be connected at the nose tip P2. For example, an imaginary second plane SF2 extending from the second slope 116a and the first slope 116b connected to the nose tip P2 may form a third angle theta3.

[0204] The first slope 116b may include a nose end portion 1162b and a protrusion 1164b. The locking position Pb may be located between the nose end portion 1162b and the protrusion 1164b. The slope of the first slope 116b connected to the nose end P2 may be the slope of an imaginary straight line connecting the second position P2 where the nose end P2 is located and the locking position Pb. For example, an imaginary straight line SF1 connecting the second position P2 and the locking position Pb and an imaginary second straight line SF2 extending from the second slope 116a may form a third angle theta3.

[0205] The third angle theta3 formed by the first slope 116b and the second slope 116a meeting at the nose end P2 may be 20 degrees or more. For example, the imaginary straight line SF1 connecting the second position P2 and the locking position Pb and the imaginary second straight line SF2 extending from the second slope 116a may form a third angle theta3 of 25 degrees or more.

[0206] The cam 116 may include a base circle BC inscribed in the slopes 116a, 116b. The base circle BC may form the basic shape of the cam 116. In the base circle BC, when the cam 116 rotates, the distance between the bottom case 10 as a counterpart and the pivot axis RX of the cam 116 may remain unchanged. The slopes 116a, 116b may be more radially spaced apart than the base circle BC of the cam 116. The base circle BC of the cam 116 may have a base circle radius r forming a radius.

[0207] The protrusion amount of the cam 116 may be the amount by which the nose end P2 protrudes from the pivot axis RX with respect to the radius of the base circle. For example, the protrusion amount of the cam 116 may be the value LP2 - r obtained by subtracting the radius r of the base circle from the distance LP2 between the second position P2 and the pivot axis RX. The larger the amount by which the nose end P2 protrudes from the cam 116, the more the protrusion amount of the cam 116 may increase. Conversely, the smaller the amount by which the nose end P2 protrudes from the cam 116, the more the protrusion amount of the cam 116 may decrease.

[0208] The protrusion amount ratio of the cam 116 may be the protrusion amount of the cam 116 with respect to the radius of the base circle BC. That is, it may be the value obtained by dividing the protrusion amount of the cam 116 by the radius of the base circle BC. The larger the protrusion amount ratio of the cam 116, the more the locking force of the cam 116 may increase. The protrusion amount ratio of the cam 116 may be formed to be 0.02 or more. For example, the protrusion amount ratio of the cam 116 may be 0.024 or more. The protrusion amount ratio of the cam 116 may be formed in the range of 0.02 to 0.08. For example, the protrusion amount ratio of the cam 116 may be formed in the range of 0.03 to 0.071. Thereby, a locking structure that satisfies usability and locking performance can be provided.

[0209] Refer toFigures 1 to 52 , may include: a bottom case for accommodating a display panel; a top case for opening and closing the bottom case; and a locking unit having a lock lever pivotally connected to the bottom case and capable of being latched to the top case or released from the top case; the locking unit includes: a cam providing a pivot axis of the lock lever between the bottom case and the lock lever and extending radially toward the pivot axis to contact the bottom case; the cam includes: a first surface located between the pivot axis and the top case and forming a curved surface; a second surface facing the first surface with the pivot axis as a reference and forming a straight surface; and a third surface located between the first surface and the second surface, forming a curved surface from the second surface and forming a step raised relative to the first surface.

[0210] The first surface may include: a recess connected to the third surface and recessed to form the step.

[0211] The first surface may include: a protrusion extending from the recess and curved to form a convex curved surface.

[0212] May further include: a stopper spaced apart from the first surface in the radial direction of the pivot axis and extending in the axial direction of the pivot axis; the stopper may contact a recess of the locking unit separated from the top case.

[0213] The cam may include: a fourth surface extending from the second surface toward the lock lever and forming a curved surface; the distance between the fourth surface and the pivot axis may become larger as it is farther from the second surface.

[0214] The third surface and the fourth surface may protrude in the radial direction of the pivot axis, and the curvature of the third surface may be greater than the curvature of the fourth surface.

[0215] The third surface may include: a locking point, which is the position where the locking unit latched to the top case contacts the bottom case; the second surface may include: an un-locking point, which is the position with the shortest distance from the pivot axis in the second surface; the distance between the locking point and the pivot axis may be greater than the distance between the un-locking point and the pivot axis.

[0216] The cam may include: a nose end located between the third surface and the second surface; the distance between the third surface and the pivot axis decreases as the nose end approaches the locking point.

[0217] The tangent of the nose end and the third surface may form an angle.

[0218] The angle formed by the tangent of the nose end and the third surface can be smaller than the angle formed by the tangent of the nose end and the second surface.

[0219] The third surface can include: a nose end surface extending from the nose end as a convex curved surface; and a convex surface extending from the nose end surface; the curvature of the convex surface can be greater than the curvature of the nose end surface.

[0220] The distance between the second surface and the pivot axis can decrease and then increase as it moves away from the third surface.

[0221] Any embodiment or other embodiments of the foregoing present invention are not exclusive or different from each other. The respective components or functions of any embodiment or other embodiments of the foregoing present invention can be used in combination or combined.

[0222] For example, it means that component A described in a specific embodiment and / or in the drawings and component B described in other embodiments and / or in the drawings can be combined. That is, even if the combination between components is not directly described, unless it is clearly indicated that they cannot be combined, it means that they can be combined.

[0223] The detailed description above should not be construed as restrictive in all aspects, but should be understood as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention fall within the scope of the present invention.

Claims

1. A display device, characterized in that, Comprising: A display module, including a display panel; A bottom housing, to which the display module is movably connected; A top housing, hingedly connected to the bottom housing; And A locking unit, located on the opposite side of the hinge connecting the bottom housing and the top housing with respect to the bottom housing, fixing the top housing to the bottom housing, or releasing the fixing from the bottom housing; The locking unit includes: A lower body, coupled to the outer side of the bottom housing; A pivot shaft sleeve, connected to the lower body; A rod body, extending in a direction from the bottom housing toward the top housing, connected to the pivot shaft sleeve to pivot with respect to the lower body; and A pair of cams, formed on the rod body at the periphery of the pivot shaft sleeve, rotating together with the rod body, contacting the outer side surface of the bottom housing, and spaced apart from each other in the longitudinal direction of the pivot shaft sleeve.

2. The display device according to claim 1, wherein At least one of the pair of cams includes: A first part, forming a curved surface at the periphery of the cam; A second part, at the periphery of the cam, at least a part of the second part forming a plane; and A third part, formed between the first part and the second part, protruding from at least one of the first part and the second part.

3. The display device according to claim 2, wherein The at least one cam further includes: A recessed part, formed between the first part and the third part; The lower body further includes: A stop part, adjacent to the first part of the cam, contacting the recessed part when the cam rotates.

4. The display device according to claim 3, wherein The stop part forms a constant interval with the first part of the cam and is located around the first part of the cam; When the cam rotates, the stop part contacts the recessed part or is stuck to the third part.

5. The display device according to claim 1, wherein The bottom housing includes: A housing, forming an outer surface; and A frame, coupled to the inner side of the housing; The lower body includes a fixing part that contacts the outer surface of the housing and is fixed to the frame.

6. The display device according to claim 5, wherein The locking unit includes: A fastening member, fixing the fixing part of the lower body to the frame; The fastening member penetrates the frame and the housing and is inserted into the fixing part of the lower body.

7. The display device according to claim 1, wherein Further comprising: A rib, extending in the longitudinal direction of the pivot shaft sleeve between the pair of cams; The rib is located between the pair of cams, protrudes from the rod body and extends, and both ends of the rib are connected to the inner side surfaces of the pair of cams.

8. The display device according to claim 7, wherein The rib includes: A first rib, connected to one of the pair of cams; and A second rib, connected to the other of the pair of cams; The first rib is spaced apart from the second rib.

9. The display device according to claim 2, wherein In at least one of the pair of cams, When the locking unit fixes the top housing to the bottom housing, the third part contacts the outer surface of the bottom housing. When the locking unit releases the fixing of the top housing from the bottom housing, a part of the second part contacts the outer surface of the bottom housing.

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