WO2024048814A1 - Support de dispositif électronique et dispositif d'affichage - Google Patents

Support de dispositif électronique et dispositif d'affichage Download PDF

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Publication number
WO2024048814A1
WO2024048814A1 PCT/KR2022/013058 KR2022013058W WO2024048814A1 WO 2024048814 A1 WO2024048814 A1 WO 2024048814A1 KR 2022013058 W KR2022013058 W KR 2022013058W WO 2024048814 A1 WO2024048814 A1 WO 2024048814A1
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WO
WIPO (PCT)
Prior art keywords
distance
electronic device
unit
fixed frame
moving frame
Prior art date
Application number
PCT/KR2022/013058
Other languages
English (en)
Korean (ko)
Inventor
손창우
권오관
윤상호
홍을표
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to PCT/KR2022/013058 priority Critical patent/WO2024048814A1/fr
Publication of WO2024048814A1 publication Critical patent/WO2024048814A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback

Definitions

  • the present invention relates to an electronic device stand equipped with a sensor that measures the height of the stand in order to automatically control the height of the vertical portion whose height changes, and a display device equipped with the same.
  • LCD Liquid Crystal Display
  • FED Field Emission Display
  • PDP plasma display panels
  • electroluminescence devices electroluminescence devices
  • the liquid crystal panel of the liquid crystal display device includes a liquid crystal layer, a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween, and can display images using light provided from a backlight unit.
  • organic light emitting display devices are self-luminous devices, they do not have a backlight compared to liquid crystal display devices and have advantages in response speed, viewing angle, etc., so they are attracting attention as next-generation displays.
  • a plurality of them are arranged in the vertical direction or arranged so that the longitudinal direction faces vertically.
  • the electronic device stand that supports the display device needs to have an adjustable structure so that the display body can be placed at various heights and angles, and electronic device stands equipped with an automation function that automatically adjusts for accurate control have also been released. It is becoming.
  • the purpose of the present invention is to provide an electronic device stand equipped with a sensor that measures the height of the stand in order to automatically control the height of the vertical part whose height changes, and a display device equipped with the same.
  • Base portion located on the mounting surface; a vertical portion extending upward from the base portion and varying in length; a horizontal portion rotatably connected to the top of the vertical portion; and an electronic device coupling part connected to an end of the horizontal part, wherein the vertical part includes a fixed frame connected to the base part; a moving frame connected to the horizontal portion; a driving unit that controls the distance between the moving frame and the fixed frame; A distance sensor that detects the distance between the moving frame and the fixed frame; And it provides an electronic device stand including a reflector located at the top of the fixed frame and facing the distance sensor.
  • the distance detection sensor may include a Time of Flight (ToF) sensor including a light emitting unit that outputs an infrared signal and a light receiving unit that detects a reflected infrared signal.
  • ToF Time of Flight
  • the TOF sensor may have a field of view within 22°.
  • the TOF sensor may have a larger field of view at a short distance and a smaller field of view at a long distance.
  • the TOF sensor can measure a straight line distance of 200 mm or more.
  • the reflector may include a metal material.
  • the reflector may include a white coating surface.
  • the reflector may have a side of 25 mm or more.
  • It may further include a limit switch that is located in parallel with the distance sensor on the moving frame and generates a limit signal that stops the driving unit when the reflector touches the reflector.
  • It may further include a second case covering between the moving frame and the fixed frame, and an inner surface of the second case may have a dark color.
  • the driving unit includes a motor fixed to the moving frame; a lead screw extending from the motor; and a moving block inserted into the lead screw and fastened to the fixed frame, wherein when the lead screw is rotated by the motor, the moving block moves along the lead screw and the gap between the moving frame and the fixed frame This can change.
  • the driving unit further includes a damper cylinder, and the reflector is located between the lead screw and the damper cylinder, and may include a groove corresponding to the shape of the damper cylinder on one side.
  • the reflector may include screws fastened to the fixing frame at protruding portions on both sides of the groove.
  • One side of the moving frame to which the horizontal portion is fastened may extend in the horizontal direction.
  • the base portion may further include a clamp for fixing to a table, etc.
  • a display unit that outputs an image
  • a back cover located on the back of the display unit; and a stand coupled to the back cover to support the display unit
  • the stand includes: a base portion located on a mounting surface; a vertical portion extending upward from the base portion and varying in length; a horizontal portion rotatably connected to the top of the horizontal portion; and a coupling portion connected to an end of the horizontal portion and coupled to the back cover
  • the vertical portion includes: a fixed frame connected to the base portion; a moving frame connected to the horizontal portion; a driving unit that controls the distance between the moving frame and the fixed frame; A distance sensor that detects the distance between the moving frame and the fixed frame; and a reflector located at the top of the fixed frame and facing the distance sensor.
  • the electronic device stand of the present invention can detect the height of the vertical part and automatically control the height to an accurate level.
  • Electronic device stands have a small sensor volume and can detect absolute position without increasing the size.
  • 1 is a block diagram for explaining each configuration of the display device of the present invention.
  • FIG 2 and 3 are perspective views showing an example of the display device of the present invention.
  • Figure 4 is a diagram showing the internal structure of the electronic device stand of the present invention.
  • Figure 5 is a cross-sectional view taken along line A-A of Figure 2.
  • Figure 6 is a cross-sectional view taken along line B-B of Figure 3.
  • Figure 7 is a diagram showing the electronic device stand electrical part of the present invention.
  • Figure 8 is a cross-sectional view taken along line C-C of Figure 3.
  • Figure 9 is a graph showing performance according to the type of reflector.
  • Figure 10 is a graph showing the signal of the distance sensor and the moving distance and error of the driving unit.
  • the display device 100 described in this specification is, for example, an intelligent display device 100 in which a computer support function is added to the broadcast reception function, and while faithful to the broadcast reception function, an Internet function, etc. is added, and a handwriting input is used. It can be equipped with a more user-friendly interface, such as a device, touch screen, or spatial remote control. In addition, by supporting wired or wireless Internet functions, it is possible to connect to the Internet and a computer and perform functions such as email, web browsing, banking, or gaming. A standardized general-purpose OS can be used for these various functions.
  • the display device 100 described in the present invention for example, various applications can be freely added or deleted on a general-purpose OS kernel, so various user-friendly functions can be performed. More specifically, the display device 100 can be, for example, a network TV, HBBTV, smart TV, etc., and in some cases can also be applied to a smartphone.
  • Figure 1 is a block diagram for explaining each configuration of the display device 100.
  • the display device 100 may include a communication unit 110, an input unit 120, a sensing unit 124, an output unit 150, a control unit 180, a storage unit 185, and a power supply unit 190.
  • the configuration shown in FIG. 1 may include only some of the configurations, or one configuration may perform two functions.
  • the communication unit 110 may include a broadcast reception unit 111 including a tuner unit and a demodulation unit.
  • the tuner unit of the broadcast receiver 111 may select a broadcast signal corresponding to a channel selected by the user or all previously stored channels among broadcast signals received through an antenna or cable.
  • the tuner unit can convert the selected broadcast signal into an intermediate frequency signal or a baseband video or audio signal.
  • the tuner unit can sequentially select broadcast signals of all broadcast channels stored through a channel memory function among received broadcast signals and convert them into intermediate frequency signals or baseband video or audio signals.
  • the demodulator of the broadcast receiver 111 may receive the digital IF signal (DIF) converted by the tuner unit and perform a demodulation operation.
  • the demodulator may perform demodulation and channel decoding and then output a stream signal (TS).
  • the stream signal may be a multiplexed video signal, audio signal, or data signal.
  • the stream signal output from the demodulator may be input to the control unit 180.
  • the control unit 180 can output video through the display unit 151 and audio through the audio output unit 152.
  • the external device interface unit 112 can connect an external device and the display device 100 to receive video signals, audio signals, and control signals from the external device.
  • the interface unit 112 can be connected wired/wireless to external devices such as a DVD (Digital Versatile Disk), Blu ray, game device, camera, camcorder, computer (laptop), etc.
  • the external device interface unit 112 transmits video, voice, or data signals input from the outside through a connected external device to the control unit 180 of the display device 100. Additionally, video, voice, or data signals processed by the control unit 180 can be output to a connected external device.
  • the external device interface unit 112 may include a wired type and a wireless type.
  • the wired type includes a physical terminal provided on the display device 100, and the wireless type can be connected to an external device through an antenna that receives wireless signals.
  • the wired type has a USB terminal, CVBS (Composite Video Banking Sync) terminal, component terminal, S-video terminal (analog), and DVI (Digital Visual Interface) so that video and audio signals from an external device can be input to the display device 100. ) terminal, HDMI (High Definition Multimedia Interface) terminal, RGB terminal, D-SUB terminal, etc.
  • the wireless type can perform short-range wireless communication with other electronic devices located nearby.
  • the display device 100 is, for example, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and Digital Living Network Alliance (DLNA). It can be networked with other electronic devices according to communication standards such as.
  • RFID Radio Frequency Identification
  • IrDA infrared data association
  • UWB Ultra Wideband
  • ZigBee ZigBee
  • DLNA Digital Living Network Alliance
  • the network interface unit 113 can access a certain web page through a connected network or another network linked to the connected network. In other words, you can access a certain web page through a network and transmit or receive data with the corresponding server. In addition, you can receive content or data provided by a content provider or network operator.
  • the network interface unit 113 can select and receive a desired application from among applications that are open to the public through a network.
  • the network interface unit 113 may transmit or receive predetermined data to and from a user terminal connected to a network with the display device. Additionally, it is possible to transmit or receive certain data to and from a server that stores game scores.
  • the input unit 120 includes a microphone 121 that collects sound, a user input unit 123 that detects the user's command, a sensor unit that senses the status of the display device and surrounding conditions, and a signal that receives signals from the remote control device 127. It may include a remote signal receiver 125.
  • the microphone 121 can recognize the user's voice or surrounding sounds, and in particular, receives the user's voice and processes it into electrical voice data.
  • Various noise removal algorithms may be implemented in the microphone 121 to remove noise generated in the process of receiving an external acoustic signal.
  • the microphone 121 does not simply collect the user's voice and convert it into voice data and store it in the storage unit 185 or transmit it to an external device through the communication unit 110, but it can analyze the voice data and recognize it as a user command. It may also function as a user input unit 123.
  • the microphone 121 may be mounted on a remote control device 127 to be described later in addition to the main body of the display device 100 and transmitted to the control unit 180 through the remote signal receiver 125.
  • the user input unit 123 is a device through which the user inputs control commands to control the display device.
  • the user input unit 123 may be comprised of a keypad, button, touch pad, or touch screen.
  • the user input unit 123 has a hard key button, the user can input a command related to the display device 100 through a push operation of the hard key button.
  • the user input unit 123 has a touch screen, the user can input commands related to the display device 100 through the remote control device 127 by touching a soft key on the touch screen.
  • the user input unit 123 may be provided with various types of input means that the user can operate, such as scroll keys and jog keys, and this embodiment does not limit the scope of the present invention.
  • the number of display devices 100 in which the user input unit 123 in the form of a physical button exposed to the outside has been minimized has increased. Instead, a minimal physical button is located on the back or side, and user input can be received through the remote control device 127 through a touchpad or a remote signal receiver 125, which will be described later.
  • the remote signal receiver 125 can input commands related to the display device 100 through the remote control device 127 equipped with the user input unit 123.
  • the remote signal receiver 125 is the user input unit 123 of the entire unit, and receives signals from the remote control device 127 according to various communication methods such as RF (Radio Frequency) communication method and infrared (IR) communication method, so it is connected to the wireless communication unit. It may belong.
  • RF Radio Frequency
  • IR infrared
  • the sensing unit 124 refers to a device that detects changes within the display device 100 or external changes.
  • a device that detects changes within the display device 100 or external changes.
  • proximity sensor e.g., proximity sensor, illumination sensor, touch sensor, infrared sensor, ultrasonic sensor, optical sensor, e.g. , camera), a voice sensor (e.g., a microphone), a battery gauge, and an environmental sensor (e.g., a hygrometer, a thermometer, etc.).
  • display devices 100 that can move or change the direction of the display have appeared, and may be equipped with a gyro sensor, an acceleration sensor, etc. to detect the posture of the display device.
  • control unit 180 can check the status of the display device 100 and notify the user when a problem occurs or control it to maintain the best condition by adjusting it on its own.
  • the content, image quality, size, etc. of the image provided to the display unit 151 can be controlled differently depending on the viewer or ambient light level detected by the sensing unit 124 to provide an optimal viewing environment.
  • the number of functions mounted on display devices increases and the number of sensing units 124 increases along with them.
  • the output unit 150 is a device that provides visual and auditory information to the user through a display device, and may include a display unit 151 and an audio output unit 152.
  • the display unit 151 may generate a driving signal by converting an image signal, data signal, OSD signal, or control signal processed by the control unit 180 or an image signal, data signal, or control signal received from the interface unit.
  • the display unit 151 may include a display panel including a plurality of pixels.
  • a plurality of pixels provided in the display panel may include RGB subpixels.
  • a plurality of pixels provided in the display panel may include RGBW subpixels.
  • the display unit 151 may convert image signals, data signals, OSD signals, control signals, etc. processed by the control unit 180 to generate driving signals for a plurality of pixels.
  • the display unit 151 can be a PDP (Plasma Display Panel), LCD (Liquid Crystal Display), OLED (Organic Light Emitting Diode), flexible display, etc., and can also be capable of a 3D display. It may be possible.
  • the 3D display unit 151 can be divided into a glasses-free type and a glasses type.
  • the display device 100 includes a display unit 151 that occupies most of the front area and a case that covers the rear side of the display unit 151 and packages the display unit 151.
  • the display device 100 has a display unit 151 that can be bent, such as LED (Light Emitting Diodes) or OLED (Organic Light Emitting Diodes), to implement a curved screen beyond a flat surface. can be used.
  • LED Light Emitting Diodes
  • OLED Organic Light Emitting Diodes
  • the backlight unit is a device that uniformly supplies the light source and the light supplied from the light source to the liquid crystal located on the front.
  • the backlight unit became increasingly thinner, it was possible to implement a thin LCD, but it is difficult to implement the backlight unit using a flexible material, and when the backlight unit is bent, it is difficult to supply light uniformly to the liquid crystal, causing a problem in that the brightness of the screen changes.
  • each element that makes up the pixel emits light on its own, so it can be implemented in a curved manner without using a backlight unit.
  • each element since each element emits its own light, even if the positional relationship with neighboring elements changes, its brightness is not affected, so the flexible display unit 151 can be implemented using LED or OLED.
  • OLED Organic Light Emitting Diode
  • OLED uses three types of phosphor organic compounds, including red, green, and blue, which have a self-luminous function. Electrons and positively charged particles injected from the cathode and anode are used to emit light. Since it is a light-emitting display product that utilizes the phenomenon of self-emitting light by combining within organic materials, there is no need for a backlight (halo device) that reduces color.
  • the LED (Light Emitting Diode) panel is a technology that uses one LED element as one pixel, and the size of the LED element can be reduced compared to the prior art, making it possible to implement a curved display unit 151.
  • LED TVs used LEDs as a light source for the backlight unit that supplied light to the LCD, but the LEDs themselves did not constitute a screen.
  • the display unit may include a plurality of pixels (R, G, B).
  • a plurality of pixels (R, G, B) may be formed in each area where a plurality of data lines and a plurality of gate lines intersect.
  • a plurality of pixels (R, G, B) may be placed or arranged in a matrix form.
  • the plurality of pixels (R, G, B) include a red (R) subpixel, a green (Green, 'G') subpixel, and a blue (Blue, 'B') subpixel. It can be included.
  • the plurality of pixels (R, G, B) may further include a white (hereinafter referred to as 'W') subpixel.
  • the side of the display unit 151 that displays images may be referred to as the front or front side.
  • the display unit 151 displays an image
  • the side from which the image cannot be observed may be referred to as the rear or back side.
  • the display unit 151 is composed of a touch screen and can be used as an input device in addition to an output device.
  • the audio output unit 152 receives the audio-processed signal from the control unit 180 and outputs it as audio.
  • the control unit 180 may include at least one processor, and may control the overall operation of the display device 100 using the processor included therein.
  • the processor may be a general processor such as a central processing unit (CPU).
  • the processor may be a dedicated device such as an ASIC or another hardware-based processor.
  • the control unit 180 demultiplexes the stream input through the tuner unit, demodulator, external device interface unit 112, or network interface unit 113, or processes the demultiplexed signals for video or audio output. Signals can be generated and output.
  • the video signal processed by the control unit 180 may be input to the display unit 151 and displayed as an image corresponding to the video signal. Additionally, the image signal processed by the control unit 180 may be input to an external output device through the external device interface unit 112.
  • the voice signal processed by the control unit 180 may be output as sound to the audio output unit 152. Additionally, the voice signal processed by the control unit 180 may be input to an external output device through the external device interface unit 112. Although not shown in FIG. 2, the control unit 180 may include a demultiplexer, an image processor, etc. This will be described later with reference to FIG. 3.
  • control unit 180 may control overall operations within the display device 100.
  • control unit 180 may control the tuner unit 111 to select (tuning) a broadcast corresponding to a channel selected by the user or a previously stored channel.
  • control unit 180 can control the display device 100 by a user command or internal program input through the user input interface unit 173. Meanwhile, the control unit 180 can control the display unit 151 to display an image. At this time, the image displayed on the display unit 151 may be a still image or a moving image, and may be a 2D image or a 3D image.
  • control unit 180 can cause a certain 2D object to be displayed in the image displayed on the display unit 151.
  • the object may be at least one of a connected web screen (newspaper, magazine, etc.), EPG (Electronic Program Guide), various menus, widgets, icons, still images, videos, and text.
  • EPG Electronic Program Guide
  • control unit 180 may modulate and/or demodulate the signal using an amplitude shift keying (ASK) method.
  • ASK amplitude shift keying
  • the amplitude shift keying (ASK) method may refer to a method of modulating a signal by varying the amplitude of the carrier wave according to the data value, or restoring an analog signal to a digital data value according to the amplitude of the carrier wave.
  • control unit 180 may modulate an image signal using an amplitude shift keying (ASK) method and transmit it through a wireless communication module.
  • ASK amplitude shift keying
  • control unit 180 may demodulate and process an image signal received through a wireless communication module using an amplitude shift keying (ASK) method.
  • ASK amplitude shift keying
  • the display device 100 can easily transmit and receive signals with other video display devices placed adjacent to it, even without using a unique identifier such as a MAC address (Media Access Control Address) or a complex communication protocol such as TCP/IP. You can.
  • a unique identifier such as a MAC address (Media Access Control Address) or a complex communication protocol such as TCP/IP.
  • the display device 100 may further include a photographing unit.
  • the photography unit can photograph the user.
  • the photographing unit can be implemented with one camera, but is not limited to this, and can also be implemented with a plurality of cameras. Meanwhile, the photographing unit may be embedded in the display device 100 on the upper part of the display unit 151 or may be placed separately. Image information captured by the photographing unit may be input to the control unit 180.
  • the control unit 180 may recognize the user's location based on the image captured by the photographing unit. For example, the control unit 180 may determine the distance (z-axis coordinate) between the user and the display device 100. In addition, the control unit 180 can determine the x-axis coordinate and y-axis coordinate in the display unit 151 corresponding to the user's location.
  • the control unit 180 may detect the user's gesture based on each or a combination of images captured from the photographing unit or signals detected from the sensor unit.
  • the storage unit 185 may store programs for processing and controlling each signal in the control unit 180, or may store processed video, audio, or data signals.
  • the storage unit 185 stores application programs designed for the purpose of performing various tasks that can be processed by the control unit 180, and selects some of the stored application programs at the request of the control unit 180. can be provided.
  • the program stored in the storage unit 185 is not particularly limited as long as it can be executed by the control unit 180.
  • the storage unit 140 may perform a function for temporarily storing video, voice, or data signals received from an external device through the external device interface unit 112.
  • the storage unit 185 can store information about a certain broadcast channel through a channel memory function such as a channel map.
  • the storage unit 185 in FIG. 1 is shown as being provided separately from the control unit 180, the scope of the present invention is not limited thereto, and the storage unit 185 may be included in the control unit 180.
  • the storage unit 185 includes volatile memory (e.g., DRAM, SRAM, SDRAM, etc.), non-volatile memory (e.g., flash memory, hard disk drive (HDD), and solid state drive (Solid- It may include at least one of state drive (SSD), etc.).
  • volatile memory e.g., DRAM, SRAM, SDRAM, etc.
  • non-volatile memory e.g., flash memory, hard disk drive (HDD), and solid state drive (Solid- It may include at least one of state drive (SSD), etc.
  • SSD state drive
  • the power supply unit 190 may supply corresponding power throughout the display device 100.
  • power can be supplied to the control unit 180, which can be implemented in the form of a system on chip (SOC), the display unit 151 for displaying images, and the audio output unit 152 for audio output. You can.
  • SOC system on chip
  • the power supply unit 190 may include a converter (not shown) that converts AC power to DC power and a Dc/Dc converter (not shown) that converts the level of DC power.
  • the power supply unit 190 receives power from the outside and serves to distribute power to each component.
  • the power supply unit 190 may use a method of supplying AC power by directly connecting to an external power source, and may include a power supply unit 190 that includes a battery and can be used by charging.
  • the charging holder can be connected to the display device through a terminal exposed to the outside, or the built-in battery can be charged when approached wirelessly.
  • the block diagram of the display device 100 shown in FIG. 1 is only a block diagram for an embodiment of the present invention, and each component of the block diagram is integrated according to the specifications of the display device 100 that is actually implemented. It may be added or omitted.
  • two or more components may be combined into one component, or one component may be subdivided into two or more components.
  • the functions performed by each block are for explaining embodiments of the present invention, and the specific operations or devices do not limit the scope of the present invention.
  • FIG 2 and 3 are perspective views showing an example of the display device 100 of the present invention.
  • the display device 100 of the present invention includes a main body 100' including a display unit and a back cover covering the back of the display unit 152, and a stand 200 for placing the main body 100' in a desired location by the user. ) may include.
  • the description will be made based on the stand 200 on which the display device 100 is mounted.
  • the electronic device stand 200 of the present invention is used to support various electronic devices in addition to the main body 100' of the display device 100. Available.
  • the electronic device stand 200 of the present invention includes a base portion 220 fixed to a mounting surface, a vertical portion 210 extending in the vertical direction from the base portion 220, and a horizontal portion extending in the horizontal direction from the vertical portion 210.
  • 230 and an end of the horizontal portion 230 may include a coupling portion 240 coupled to an electronic device.
  • the base portion 220 can have a structure that is fixed on a table and can also be in the form of a base plate 221 with a large support area. As shown in FIG. 2, when the base plate 221 of a small size is provided, the fixing force is It may include a clamp 223 into which the table is inserted.
  • the base portion 220 and the vertical portion 210 are rotatably coupled through the first rotating portion (1), and the horizontal portion 230 and the vertical portion 210 are also rotatably coupled through the second rotating portion (2). can do.
  • the third rotating part 3 located between the horizontal part 230 and the coupling part 240 can change the direction of the display body 100' by rotating the coupling part 240 with respect to the horizontal part 230. You can.
  • the first rotating parts (1) to the third rotating parts (3) rotate around a vertical rotation axis, and the rotation of the four members (210, 220, 230, and 240) in the three rotating parts is combined to display the display as shown in FIG.
  • the horizontal position of the main body 100', the front-to-back position, and the direction in which the display main body 100' faces can be adjusted.
  • the coupling part 240 may further include a fourth rotating part 4 centered in the horizontal direction so that the display body 100' can rotate in the vertical direction.
  • the height of the display body 100' may vary when used by multiple users. Additionally, recently, the height of the desk can be adjusted, so when a user alternately uses the display device 100 in a sitting state and a standing state, the height of the display device 100 may need to be adjusted.
  • the vertical portion 210 has a variable length and can control the height of the electronic device, including the display body 100' located in the coupling portion 240.
  • the vertical portion 210 has a multi-stage shape in which the second case 212 is inserted into the first case 211, depending on the degree to which the second case 212 is inserted into the first case 211.
  • FIG. 3 shows that the second case 212 is further inserted inside the first case 211, lowering the height of the moving frame 214, thereby forming the horizontal portion 230, the coupling portion 240, and the display body 100. ') can also be lowered.
  • FIG. 4 is a diagram showing the internal structure of the electronic device stand 200 of the present invention.
  • the vertical part 210 includes a fixed frame 213 located on the upper part of the base part 220, a movable frame 214 disposed at a distance from the upper part of the fixed frame 213 and coupled to the horizontal part 230, , may include a driving unit 250 that adjusts the gap between the moving frame 214 and the fixed frame 213.
  • the first case 211 may cover the fixed frame 213 and the second case 212 may cover the driving unit 250 located between the moving frame 214 and the fixed frame 213. Since the second case 212 moves in the vertical direction, the first case 211 may have a height that can cover the bottom of the second case 212.
  • the moving frame 214 may have a size corresponding to the cross-sectional size of the second case 212, and may have a shape extending toward the portion where the horizontal portion 230 is coupled as shown in FIG. 4.
  • the moving frame 214 is formed in a slightly extended form from the vertically extending portion of the vertical portion 210 to provide a space for mounting the driving unit 250 and the sensor on the moving frame 214.
  • assembly is easy because the second hinge part fastened to the horizontal part 230 is arranged in the horizontal direction.
  • the fixed frame 213 can be configured as an injection molded product or a rigid bar extending vertically, and is covered by the first case 211, so it is not exposed to the outside.
  • FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2, and FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3.
  • FIG. 5 shows the vertical portion 210 in an extended state
  • FIG. 6 shows the vertical portion 210 in a contracted state, and specifically shows the structures of the driving unit 250 and the distance detection sensor 255.
  • the driving unit 250 is a linear motor 251 that moves in the vertical direction, and the invention can use a lead screw 252 that converts to linear motion using the rotational force of the motor 251.
  • the lead screw 252 is a bar-shaped member with threads formed on the outer surface and rotates by receiving rotational force from the motor 251.
  • the moving block 253 includes a hole in which a spiral groove corresponding to the thread of the lead screw 252 is formed, and the lead screw 252 penetrates the moving block 253 through the hole.
  • the moving block 253 has limited rotation and does not rotate when the lead screw 252 rotates but moves up and down.
  • the rotational force of the motor 251 can be converted into a straight driving force through the lead screw 252 and the moving block 253.
  • the motor 251 and the lead screw 252 are fastened to the fixed frame 213 or the moving frame 214, and the moving block 253 is fastened to the opposite side to close the gap between the moving frame 214 and the fixed frame 213. It can be adjusted.
  • electrical parts such as sensors, which will be described later, can be placed on the upper part of the vertical part 210 so that they can be easily electrically connected to the display body 100'. Therefore, it is advantageous in terms of wiring to place the motor on the moving frame 214 located on the upper side as shown in FIG. 5.
  • the moving block 253 is fastened to the fixed frame 213, and when the length of the vertical portion 210 is shortened, the lead screw 252 can be inserted into the fixed frame 213 as shown in FIG. 6.
  • the fixing frame 213 includes a space in which the lead screw 252 can be placed.
  • the second case 212 is introduced into the first case 211, and the length of the entire vertical portion 210 may be shortened by h3.
  • the driving unit 250 requires an additional configuration to connect the fixed frame 213 and the moving frame 214.
  • a guide bar 245 extending parallel to the lead screw 252 may be used to limit the horizontal movement of the movie block 253 without restricting its vertical movement.
  • the guide bar 245 may be coupled to one side of the moving frame 214 or the fixed frame 213, and the other side may be configured to have a hole into which the guide bar can be inserted.
  • the guide bar includes a lead screw 252 and By being spaced apart, it is possible to support the force applied in the lateral direction when the lead screw 252 rotates.
  • the guide bar may further use a damper cylinder 254 to limit sudden changes in length of the vertical portion 210.
  • a damper cylinder 254 to limit sudden changes in length of the vertical portion 210.
  • it is not a simple bar-shaped guide bar, but can have a damper cylinder (254_ structure) that acts as a piston inserted into the cylinder and buffers the force applied in the vertical direction.
  • a guide bar (piston) is located on the fixed frame 213, and a damper cylinder 254 is formed as a cylinder in which the guide bar is inserted at the top.
  • the damper cylinder 254 can cushion changes in the length of the vertical portion 210 and offset the rotational force caused by the lead screw 252 to guide the moving frame 214 to be driven only in the vertical direction.
  • An encoder may be provided to detect the rotational speed and direction of the motor 251, but since the encoder is a relative value, the position of the moving frame 214 where the motor 251 starts to drive cannot be known.
  • a separate sensor capable of detecting the height of the vertical portion 210 is required. Since the position of the moving frame 214 is variable, a sensor capable of measuring the distance in a non-contact manner is needed, and considering the size of the electronic device stand 200, a small sensor is needed.
  • a laser sensor is a device that measures distance using a laser.
  • the laser is a light source with high straightness, so it can accurately measure distance and has a wide measurable range.
  • the laser is not subject to interference from other light, so there is little change in performance due to external light sources.
  • the cost of the laser is high, the price of the laser sensor is also high.
  • Ultrasonic sensors are inexpensive and do not use light, so they are less affected by external light sources. However, it is greatly affected by surrounding objects and has a large wavelength, making it difficult to use in narrow spaces.
  • Linear scales that measure distances in a physical way such as encoders, are capable of measuring distances precisely, but have the problem of being expensive and bulky.
  • Flight time refers to distance measurement, and distance is measured through the time it takes for infrared rays to reflect and return.
  • the principle of measuring the return time of emitted light is the same for laser sensors, but the light source is infrared, which is inexpensive and the size of the light source is small enough to be mounted directly on a board.
  • infrared rays have a large angle of view because they do not travel in a straight line compared to lasers. Therefore, as the distance increases, it is difficult to accurately measure the distance due to the angle of view, and it is affected by external light, making it difficult to use in bright spaces.
  • the distance can be measured in the inner space of the second case 212, the sensitivity can be increased by using the reflector 256, and the measurable distance can be expanded by using a ToF sensor with a small field of view. You can.
  • the ToF sensor applied to this embodiment must be able to detect a distance of up to h1 or more and a distance of at least h2 or less.
  • Figure 7 is a diagram showing the electrical part of the electronic device stand 200 of the present invention.
  • the length of the vertical portion 210 is shrunk, and the limit switch 257 and distance sensor 255 mounted on the moving frame 214 are shown. It may be placed adjacent to the motor 251 of the driving unit 250, and may further include a limit switch 257 that limits the driving range of the driving unit 250.
  • the limit switch 257 physically generates a stop signal when the top of the fixed frame 213 is touched to stop the operation of the motor 251 of the driving unit 250.
  • the driving range of the driving unit 250 is determined, and in this embodiment, the limit switch 257 may be located adjacent to the distance sensor 255.
  • the distance detection sensor 255 of the present invention is positioned toward the bottom of the movable frame 214 and can measure the distance to the fixed frame 213 at the bottom. That is, the distance sensor 255 measures the distance inside the vertical portion 210, and the space through which the light source of the distance sensor 255 passes may be located in the internal space surrounded by the second case 212.
  • the accuracy of the distance detection sensor 255 can be increased by painting the inside of the second case 212 in a dark color to block external light from entering.
  • the distance sensor 255 may be located on the outside of the vertical part 210 instead of inside the vertical part 210 to detect the distance to the desk. However, it may be affected by an external light source and the distance to the desk detected by the distance sensor 255 If another object is located in the area, the exact distance cannot be measured. Additionally, since the distance to be detected by the distance detection sensor 255 measures the entire length of the vertical portion 210 from the top of the vertical portion 210, a sensor that can measure a relatively long distance is needed.
  • ToF is affected by external light sources, it is more advantageous to measure it inside the vertical part 210 rather than outside.
  • the distance from the moving frame 214 to the fixed frame 213 only needs to be measured about half of the distance from the moving frame 214 to the desk, so even if a ToF sensor is used, the distance can be measured within a range with a relatively small error. .
  • the inside of the vertical part 210 is narrow because the above-mentioned driving part 250 is located, and as shown in FIG. 5, the top of the fixed frame 213 does not have an even plane, so it is detected from the distance sensor 255. It is difficult to accurately measure the distance to the edge of the fixture.
  • a reflector 256 may be provided at the top of the fixed frame 213 to provide a uniform surface. The distance can be measured by detecting the light emitted from the distance detection sensor 255 and returned after being reflected by the reflector 256.
  • Figure 8 is a cross-sectional view taken along line C-C of Figure 3.
  • Accuracy can be increased when the reflector 256 is formed to a size that can fill the empty space axb inside the second case 212 as much as possible. If it is too small, infrared rays may reach locations other than the reflector 256 and the reflectivity may drop from a distance.
  • the reflector 256 may be located between the lead screw 252 and the damper cylinder 254 of the driving unit 250, as shown in FIG. 7, and may have a maximum size within a range that does not interfere with other parts.
  • the motor 251 is located on the lower side and is spaced apart from the lead screw 252 so as not to contact it when the lead screw 252 rotates, and may be arranged to be in almost close contact with the damper cylinder 254 on the upper side.
  • the distance detection sensor 251 when using the reflector 256 having a size of 25mmx25mm or more, the distance detection sensor 251 can accurately measure the distance within an error range of up to 200mm.
  • It includes a groove corresponding to the shape of the damper cylinder 254, and the reflector 256 can be fixed to the top of the fixing frame 213 using protruding parts on both sides of the groove.
  • One end of the reflector 256 can generate a stop signal by contacting the limit switch 257 described above, and bearings may be provided on the left and right sides of the reflector 256 for smooth movement.
  • Figure 9 is a graph showing performance according to the type of reflector 256.
  • (a) is a graph showing the results when a light-colored (ivory) injection molded product is used as the reflector 256
  • (b) is a graph showing the results when a metal reflector 256 is used.
  • the horizontal direction refers to the distance
  • the vertical direction refers to the strength of the signal detected by the ToF sensor.
  • the purpose of testing was to implement a distance detection sensor (255) that has linearity and can be measured from 30mm to 200mm in order to detect the position of a moving part moving in a 170mm section.
  • a distance detection sensor 255
  • it was designed to deliver performance within a certain range both within 30mm and over 200mm.
  • ToF sensors generally have a field of view of about 25°, so an error of about 4-5mm can occur at a distance of about 200mm. If a ToF sensor with a smaller field of view, for example, has a field of view of about 18°, the error can be lowered to 2.5mm.
  • the error range of about 2.5 mm does not have a significant effect on the height control of the vertical portion 210.
  • ToF sensor that has a large angle of view at a close distance and reduces the angle of view smaller at a distance.
  • it has an angle of view of about 22° at a close distance, but when the distance increases, the angle of view can be reduced to about 18° to reduce errors.
  • the distance detection sensor 255 of the present invention uses infrared rays, if the distance is too close, the speed of reflected light is too short, making it difficult to measure the exact distance. Additionally, the distance to the adjacent lead screw 252, damper cylinder 254, and second case 212 and the distance to the reflector 256 are similar, making it difficult to accurately measure the distance. Therefore, the distance between the reflector 256 and the distance sensor 255 can be designed to have a minimum distance of about 30 mm.
  • the reflector 256 may have a flat shape with minimal surface irregularities in order to reflect infrared rays.
  • the fixed frame 213 When the fixed frame 213 is molded by injection molding, it can be manufactured with the same injection molding material as the fixed frame 213. The surface material and color of injection-molded products can be freely adjusted, but their reflectivity is lower than that of metal.
  • FIG. 9 it is a graph showing the results of the distance detection sensor 255 when the reflector 256 is implemented with a bright colored injection molded material.
  • the distance detection sensor 255 no longer detects the distance. Cannot be measured (Section A).
  • the distance detection sensor 255 since the slope is gentle, the distance detection sensor 255 must be tuned for 1:1 matching, but there is a problem in that the error increases. Increase the intensity of light reaching the distance detection sensor 255 so that the slope of the graph between the distance to the actual reflector 256 and the distance detected by the distance detection sensor 255 is 1:1.
  • Figure 9(b) is a graph showing the results of the distance detection sensor 255 when a reflector 256 implemented using a metallic SUS steel plate is used to increase reflectivity.
  • the slope of the graph may also appear steeper than that of the injection reflector 256 in (a).
  • the distance between the distance sensor 255 and the reflector 256 is around 200 mm, the distance can be measured while maintaining almost linearity, and the distance can be measured with uniform accuracy even at a long distance.
  • the reflector 256 can be made of a metal material and coated with a bright color such as white to lower the reflectance. By manufacturing the reflector 256 so that the reflectance is between that of an injection molded product and a metal material, the distance detection sensor 255 can be controlled to measure an accurate value even at a short distance.
  • Figure 10 is a graph showing the signal of the distance sensor 255 and the moving distance and error of the driving unit 250.
  • the distance detection sensor 255 is synchronized according to the vertical movement of the actual driving unit 250, and the result is linear, and (b) represents the error between the two values. If the error is within ⁇ 5 on average, it can be judged as an accurate value, and the height of the vertical portion 210 can be automatically controlled using the distance detection sensor 255 of the present invention.
  • the electronic device stand 200 of the present invention can detect the height of the vertical portion 210 and automatically control it to an accurate height.
  • the electronic device stand 200 has a small distance sensor and can detect the absolute position without increasing the size.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention concerne un support de dispositif électronique qui peut être commandé automatiquement à une hauteur exacte en pouvant détecter la hauteur d'une partie verticale de celui-ci, le support de dispositif électronique comprenant : une partie de base positionnée sur une surface de repos ; une partie verticale qui s'étend vers le haut à partir de la partie de base et dont la longueur change ; une partie horizontale reliée de manière rotative à l'extrémité supérieure de la partie verticale ; et une partie de couplage de dispositif électronique reliée à une partie d'extrémité de la partie horizontale, la partie verticale comprenant : un cadre de fixation relié à la partie de base ; un cadre mobile relié à la partie horizontale ; une unité d'entraînement pour commander la distance entre le cadre mobile et le cadre de fixation ; un capteur de détection de distance pour détecter la distance entre le cadre mobile et le cadre de fixation ; et une plaque de réflexion qui est positionnée au niveau de l'extrémité supérieure du cadre de fixation et qui fait face au capteur de détection de distance.
PCT/KR2022/013058 2022-08-31 2022-08-31 Support de dispositif électronique et dispositif d'affichage WO2024048814A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200250276Y1 (ko) * 2001-07-10 2001-11-17 주식회사 와이드 자동 승하강 및 회전이 가능하게 하는 모니터의 스탠드장치
KR200268646Y1 (ko) * 2001-12-06 2002-03-16 주식회사 Korea 신예 평판형 모니터 스텐드
KR100654831B1 (ko) * 2004-12-22 2006-12-08 삼성전자주식회사 디스플레이지지장치
US20080265107A1 (en) * 2004-06-10 2008-10-30 Manuel Saez Mechanism for Positional Adjustment of an Attached Device
KR100967844B1 (ko) * 2010-04-09 2010-07-05 (주)한맥도시개발 벽체 두께 측정용 안전진단장비
CN111076034A (zh) * 2019-10-31 2020-04-28 嘉兴辉鸿五金有限公司 一种电子显示屏支架及使用方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200250276Y1 (ko) * 2001-07-10 2001-11-17 주식회사 와이드 자동 승하강 및 회전이 가능하게 하는 모니터의 스탠드장치
KR200268646Y1 (ko) * 2001-12-06 2002-03-16 주식회사 Korea 신예 평판형 모니터 스텐드
US20080265107A1 (en) * 2004-06-10 2008-10-30 Manuel Saez Mechanism for Positional Adjustment of an Attached Device
KR100654831B1 (ko) * 2004-12-22 2006-12-08 삼성전자주식회사 디스플레이지지장치
KR100967844B1 (ko) * 2010-04-09 2010-07-05 (주)한맥도시개발 벽체 두께 측정용 안전진단장비
CN111076034A (zh) * 2019-10-31 2020-04-28 嘉兴辉鸿五金有限公司 一种电子显示屏支架及使用方法

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