WO2014108006A1 - 一种可自由折叠的柔性led屏幕 - Google Patents

一种可自由折叠的柔性led屏幕 Download PDF

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Publication number
WO2014108006A1
WO2014108006A1 PCT/CN2013/088649 CN2013088649W WO2014108006A1 WO 2014108006 A1 WO2014108006 A1 WO 2014108006A1 CN 2013088649 W CN2013088649 W CN 2013088649W WO 2014108006 A1 WO2014108006 A1 WO 2014108006A1
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WO
WIPO (PCT)
Prior art keywords
screen
led
sub
screens
led sub
Prior art date
Application number
PCT/CN2013/088649
Other languages
English (en)
French (fr)
Inventor
刘延平
Original Assignee
深圳市维世科技有限公司
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 深圳市维世科技有限公司 filed Critical 深圳市维世科技有限公司
Priority to KR1020147005853A priority Critical patent/KR101692125B1/ko
Priority to SG2014014856A priority patent/SG2014014856A/en
Priority to MX2014013538A priority patent/MX349091B/es
Priority to AU2013317305A priority patent/AU2013317305B2/en
Priority to JP2014555937A priority patent/JP5889442B2/ja
Priority to BR212014031356U priority patent/BR212014031356U2/pt
Priority to RU2014112075/07A priority patent/RU2576242C2/ru
Priority to CA2855934A priority patent/CA2855934C/en
Publication of WO2014108006A1 publication Critical patent/WO2014108006A1/zh
Priority to ZA2014/05969A priority patent/ZA201405969B/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/007—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for shipment or storage
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2999/00—Subject-matter not otherwise provided for in this subclass

Definitions

  • the present invention relates to LED displays for video display, and more particularly to a flexible LED screen that is freely rotatable.
  • the LED screen is a kind of LED display that displays text, graphics, images, animations, quotes, videos, and video signals.
  • a display such as various information.
  • LED screen applications are becoming more widespread.
  • existing LEDs The display screen cannot be folded at will, especially in large angles, which makes it very inconvenient to carry, store, install and disassemble. Especially for large LED screens, handling and storage, installation and disassembly are very difficult.
  • the present invention provides a foldable flexible LED in order to solve the technical problem that the existing LED display screen is inconvenient to be retracted, installed, handled and stored. Screen.
  • the invention provides a freely foldable flexible LED screen comprising a plurality of LED sub-screens and a PCB placed in the LED sub-screen housing The board, the LEDs on the PCB board, and the wires that are electrically connected to each PCB board. Adjacent LED sub-panels are connected by a relatively freely rotatable connection mechanism.
  • the connecting mechanism comprises a rotating rod, a rotating shaft disposed at two ends of the rotating rod;
  • the housing of the sub-screen includes a front shell and a rear shell, and the edges of the front shell and the rear shell are symmetrically provided with a groove, and the rotating shafts at both ends of the rotating rod are respectively mounted on the adjacent two LEDs a recess of the front screen and the rear shell is further provided with a cover connecting the rotating shaft, and a cover corresponding to the rotating shaft is provided with a rotating shaft groove which is rotationally connected with the rotating shaft, and the rotating shaft
  • the groove is a cylindrical hole or an elliptical column hole.
  • the rotating rod is connected by at least two sections of the shaft hinge.
  • the connecting mechanism comprises a mandrel disposed at an edge of the casing and adjacent two LEDs
  • the mandrel in the sub-screen housing constitutes a rotationally connected connecting rod, and the hole connected to the mandrel on the connecting rod is a circular hole or an elliptical hole.
  • the connecting rod is formed by at least two rods hingedly connected.
  • the connecting rod is integrally connected by screws by two semi-connecting blocks of the axis of the symmetrical connecting rod.
  • the connecting mechanism comprises a length of flexible rope, the two ends of the flexible rope are provided with connecting heads, and the two connecting heads are respectively stuck to adjacent LEDs In the card slot of the sub-screen housing.
  • the connecting mechanism comprises a whole flexible rope, and a connecting leg disposed on the whole flexible rope, the connecting
  • the connectors are respectively snapped into the slots of the corresponding LED sub-screen housings.
  • the adjacent two LEDs The end surface of the sub-screen housing is provided with a convex and convex positioning mechanism, and the positioning mechanism is a spherical groove provided on an end surface of the casing and a spherical boss disposed on the end surface of the other casing to cooperate with the spherical groove.
  • the LED The housing of the sub-screen includes a front shell and a rear shell, the edge of the rear shell is symmetrically provided with a line slot, and the middle portion of the rear shell is further provided with an isolation boss.
  • the invention combines the LED sub-screen 1 into a large screen in the longitudinal and lateral directions.
  • the composed screen can be folded vertically or horizontally. After the screen is folded, the volume is small, the weight is lighter than the traditional box screen, and the transportation and storage cost are lower. Since the LED sub-screen can be relatively freely rotated and folded, the user can easily realize the curved screen, the spherical shape, the cylindrical shape and the like. And the installation is simple and convenient.
  • Figure 1 is a schematic illustration of a flexible LED screen of the present invention that is freely foldable
  • Figure 1a is a perspective view of a rotating lever in a first embodiment of the present invention
  • Figure 1b is a schematic exploded view of the connecting mechanism of the first embodiment of the present invention.
  • Figure 1c is a schematic view of the connection of the first embodiment of the present invention.
  • Figure 2a is a perspective view of a rotating lever in a second embodiment of the present invention.
  • 2b is a schematic structural view of the LED sub-panel of the second embodiment of the present invention when bent to overlap;
  • 3a and 3b are perspective views of two link structures in a third embodiment of the present invention.
  • Figure 3c is a schematic exploded view of the connecting mechanism of the third embodiment of the present invention.
  • 3d is a schematic structural view of the LED sub-panel of the third embodiment of the present invention when folded to overlap;
  • Figure 4a is a perspective view of a connecting rod in a fourth embodiment of the present invention.
  • Figure 4b is a schematic exploded view of the connecting mechanism of the fourth embodiment of the present invention.
  • 4c is a schematic structural view of the LED sub-panel of the fourth embodiment of the present invention when bent to overlap;
  • Figure 5 is a perspective view of a connecting mechanism in a fifth embodiment of the present invention.
  • Figure 6 is a perspective view of a connecting mechanism in a sixth embodiment of the present invention.
  • Figure 7a is a schematic view of the positioning mechanism of the present invention.
  • Figure 7b is a schematic view showing the connection of the positioning mechanism of the present invention.
  • Figure 8a is a rear view of the LED sub-screen of the present invention.
  • Figure 8b is a schematic view showing the connection of adjacent two LED sub-screen wires of the present invention.
  • Fig. 8c is a structural schematic view of the LED sub-panel of the present invention when bent to overlap.
  • the present invention provides a freely foldable flexible LED screen which is formed by splicing a plurality of LED sub-screens 1 .
  • the LED sub-screen 1 has a PCB inside the housing, and the PCB has an LED 25 and a wire 22 electrically connected to each PCB.
  • LED sub-screens adjacent to the top, bottom, left, and right 1 is connected by a connection mechanism 103 which is relatively free to rotate.
  • LED sub-screen 1 is a pre-processed small LED screen, which is the basic unit board and its size is generally 200 * 200 Between mm and 80 * 80mm, it can be square or rectangular.
  • LED sub-screen 1 How many sets of connection mechanism 103 are provided on one side, which can be based on LED The size of the sub-screen and the pixel pitch are selected. In order to achieve a special display effect of LED screen transparency and reduce the weight and ventilation of the display to reduce the wind resistance, a plurality of holes can also be provided on the PCB board.
  • Wire 22 The main role is to transmit electrical signals and power. They can be connected in one direction, such as a vertical or horizontal connection, or in two directions, that is, the wires 22 are connected in both the longitudinal and lateral directions.
  • the connecting mechanism 103 includes: a rotating rod 2, and a rotating shaft disposed at two ends of the rotating rod 3 .
  • the housing of the LED sub-screen 1 comprises a front shell and a rear shell, the edges of the front shell and the rear shell are symmetrically provided with a groove 4, and the rotating shafts 3 at both ends of the rotating rod are respectively mounted on the adjacent two LEDs
  • the recess of the sub-panel housing, and the recesses of the front and rear shells are further provided with covers 5 and 6 , and the cover 5 corresponding to the rotating shaft 3 is provided with a rotating shaft groove 7 which cooperates with the rotating shaft 7
  • the shaft groove is a cylindrical hole or an elliptical column hole (see Figure 3b).
  • the rotating shaft 3 with the rotating lever constitutes a connection that allows the adjacent two LED sub-panels 1 to be freely rotatable.
  • the rotating shaft 3 is designed at both ends of the rotating rod 2, and the adjacent LED sub-screen 1 is rotated and folded around the rotating shaft 3, 360 can be used.
  • the rotation of the degree is distributed to the two rotating shafts, that is, each LED sub-screen 1 only needs to rotate around the rotating shaft.
  • the degree can be reduced, which can reduce the space required for rotation, realize the folding and connection of thicker screens, and ensure the spacing of each pixel after the screen is expanded.
  • On the housing and PCB there is also a rotating rod 2 Rotate the required rotation groove 105, which is designed between the gaps of the LEDs and does not affect the display effect of the LEDs.
  • the connecting mechanism is substantially the same as that of the first embodiment, except that the rotating lever 2 is The two sections are connected by a hinge 30.
  • the rotating rod can also be hinged by a plurality of segments as needed.
  • the structure is designed with three reels that can be used to achieve a larger thickness of the screen.
  • the connection mechanism includes: disposed on the LED sub-screen 1
  • the mandrel 9 of the upper, lower, left and right edges of the casing and the mandrel 9 on the casing of the adjacent two LED sub-screens 1 form a rotationally connected connecting rod
  • the hole connected to the mandrel on the connecting rod is a circular hole 12 ( Figure 3a Shown) or elliptical hole 13 (as shown in Figure 3b).
  • the connecting rods may be integrally connected by the two semi-connecting blocks 10 of the axis of the symmetrical connecting rod by screws 11.
  • the connecting mechanism is substantially the same as that of the first embodiment, except that the connecting rod is a rod-shaped member and is composed of two rods 14 Hinged.
  • the connecting rod can also be hinged by a section of the rod body or a plurality of sections of the rod body as needed.
  • the connecting mechanism can also adopt a length of flexible cord 18, and the two ends of the flexible cord are provided with a connector 17 .
  • the connectors at the two ends are used to respectively be stuck in the card slots of the adjacent LED sub-screen housings, thereby connecting the LED sub-panels.
  • the flexible cord of the embodiment 18 Wire ropes, nylon ropes or other flexible materials can also be used.
  • the joints 17 can be made of materials such as copper or aluminum-zinc alloy.
  • the casing is further provided with a concave steel wire bending groove 104 at the connection with the steel wire rope.
  • the concave steel wire bending grooves may not be used.
  • a groove corresponding to the wire bending groove can also be provided on the PCB.
  • the length of the wire 22 between adjacent sub-screens 1 is greater than the length of the wire rope 18
  • the length of the wire rope 18 is such that the protective wire 22 is not broken.
  • the wire rope 18 can also be used as an electrical connection, ie the wire is partially replaced by a wire 22 Used as a power or electrical signal transmission line.
  • the wire rope in this embodiment is provided in a section between each sub-screen, and the whole screen is connected in series by a length of steel wire and a sub-screen, and the weight of the lower part is borne by the connection of the top wire rope and the casing.
  • This has a weak overall load-bearing capacity and is suitable for smaller, lighter screens.
  • the connecting mechanism can also adopt a whole wire rope 19, and the connecting heads are arranged on the entire elastic rope.
  • the connector is used to respectively be stuck in the card slots of the corresponding LED sub-screen housings.
  • the weight of the screen is borne by the entire wire rope 19, and each sub-screen is simply attached to the wire rope 19 It is therefore suitable for larger and heavier screens.
  • the end surface (transverse direction, longitudinal end surface) of the casing is provided with a convex and convex positioning mechanism, and the positioning mechanism is a spherical groove 20 provided at an end surface of the casing and a spherical shape matched with the spherical groove 20 provided at the end surface of the other casing. Boss 21 .
  • the spherical boss 21 and the spherical groove 20 When each sub-screen is expanded into a plane, the spherical boss 21 and the spherical groove 20 When the two sides are engaged with each other, the sub-screens can be fixed to each other in the up, down, front and back directions to ensure that the gap between the top and bottom of the sub-screen is uniform, and the left and right distances of the sub-screen are fixed by the wire or the rotating shaft, thereby ensuring the uniformity of the distribution of the pixels on the entire screen and ensuring the screen. Does not warp, ensuring the overall flatness of the screen. When the screen is retracted, the spherical groove and the spherical boss can be separated from each other without interference, and will not affect the retracting process of the screen.
  • the housing of the LED sub-screen 1 includes a front case 101 and a rear case 102, and the rear case 102.
  • One end edge is symmetrically provided with a line slot 23, and an intermediate boss 24 is also provided in the middle of the rear case.
  • the LED sub-screen 1 can be joined into a large screen in the longitudinal and lateral directions.
  • Large screen LEDs can be achieved with the controller and power supply Video display.
  • the composed screen can be folded vertically or horizontally.
  • the screen is small in size, lighter in weight than the traditional cabinet screen, lower in transportation and storage costs, and simple to install. Due to LED
  • the sub-screen can be rotated and folded relatively freely, and the user can easily realize the curved screen, the spherical shape, the cylindrical shape and the like, and is convenient to use.
  • the LED sub-screen 1 of the present invention can be used alone, without a housing, and only requires a PCB Just use it for places that don't require protection.
  • the PCB can also be processed with a full potting or semi-filling process for outdoor or underwater work.

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  • General Physics & Mathematics (AREA)
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  • Microelectronics & Electronic Packaging (AREA)
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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract

一种可自由折叠的柔性LED屏幕，包括多块LED子屏（1），置于LED子屏（1）壳体内的PCB板、设于PCB板上的LED和电性连接各PCB板的导线（22），相邻的LED子屏（1）之间通过可相对自由转动的连接机构（103）连接，连接机构（103）包括转动杆（2）、设于该转动杆（2）两端的转轴（3）；所述LED子屏（1）的壳体包括前壳和后壳，前壳和后壳的边缘对称设有凹槽（4），所述转动杆（2）两端的转轴（3）分别安装于相邻两LED子屏（1）壳体的一凹槽（4）中，而前壳和后壳的凹槽（4）中还设有连接所述转轴（3）的封盖（5，6），与转轴（3）对应的封盖（5，6）设有与转轴（3）构成转动连接的转轴槽（7）。该由LED子屏（1）拼接而成的大屏幕可以纵向或横向折叠，折叠后体积小，重量轻，运输存储方便，且LED子屏（1）可相对自由转动和折叠，很容易实现弧形、球形、圆柱等异形屏幕。

Description

一种可自由折叠的柔性LED屏幕 技术领域
本发明涉及视频显示的 LED 屏幕，尤其是涉及一种可自由转动折叠的柔性 LED 屏幕。
背景技术
LED 屏幕是一种靠 LED 的亮、灭来显示文字、图形、图像、动画、行情、视频、录像 信号 等各种信息的显示屏。随着 LED 技术的成熟与普及， LED 屏幕应用越来越广。但是，现有 LED 显示屏不能随意折叠，特别不能大角度的折叠，使得搬运、存储、安装、拆卸时均非常不便，尤其是大型 LED 屏幕，搬运和存储、安装、拆卸更是非常困难。
发明内容
本发明为了解决现有的 LED 显示屏不便于收放、安装、搬运和存储的技术问题，提供一种可折叠的柔性 LED 屏幕。
本发明提供的一种可自由折叠的柔性 LED 屏幕，其包括多块 LED 子屏，置于 LED 子屏壳体内的 PCB 板、设于 PCB 板上的 LED 和电性连接各 PCB 板的导线。相邻的 LED 子屏之间通过可相对自由转动的连接机构连接。
较优的，所述连接机构包括转动杆、设于该转动杆两端的转轴；所述 LED 子屏的壳体包括前壳和后壳，前壳和后壳的边缘对称设有凹槽，所述转动杆两端的转轴分别安装于相邻两 LED 子屏壳体的一凹槽中，而前壳和后壳的凹槽中还设有连接所述转轴的封盖，与转轴对应的封盖设有与转轴构成转动连接的转轴槽，该转轴槽为圆柱孔状或椭圆柱孔状。
较优的，所述的转动杆至少由两段杆体铰链连接而成。
较优的，所述连接机构包括设于壳体边缘的心轴、与相邻两 LED 子屏壳体中的心轴构成转动连接的连杆，连杆上与心轴连接的孔为圆孔或椭圆孔。
较优的，所述的连杆至少由两段杆体铰链连接而成。
较优的，所述的连杆由对称连杆轴线的两个半连接块通过螺钉连接成一体。
较优的，所述的连接机构包括一段柔性绳，该柔性绳的两端设有连接头，两连接头分别卡于相邻 LED 子屏壳体的卡槽中。
较优的，所述的连接机构包括一整根柔性绳、间隔设于该整根柔性绳上的连接头，该连
接头分别卡于对应的 LED 子屏壳体的卡槽中。
较优的，所述的相邻两 LED 子屏壳体的端面设有凹凸球形的定位机构，该定位机构为设于一壳体端面的球形凹槽和设于另一壳体端面的与所述球形凹槽配合的球形凸台。
较优的，所述 LED 子屏的壳体包括前壳和后壳，后壳的边缘对称设有藏线槽，后壳的中部还设有隔离凸台。
本发明将 LED 子屏 1 在纵向和横向两方向连接拼成一块大屏幕。组成后的屏幕可以纵向或横向折叠。屏幕折叠后体积很小，重量相对于传统的箱体屏更轻，运输、存储成本更低，由于 LED 子屏可以相对自由转动和折叠，用户很容易实现弧形、球形、圆柱等异形屏幕，而且使用安装简单方便。
附图说明
下面结合实施例和附图对本发明进行详细说明，其中：
图1 是本发明 可自由折叠的柔性 LED 屏幕 的示意图；
图1a 是本发明第一实施例中转动杆的立体图；
图1b是本发明第一实施例连接机构的爆炸示意图；
图1c 是本发明第一实施例的连接示意图；
图2a 是 本发明第二实施例中转动杆的立体图；
图2b是本发明第二实施例的 LED 子屏弯折至叠合时的结构示意图；
图3a 和图3b 是 本发明第三实施例中两种连杆结构的立体图；
图3c 是本发明 第三实施例连接机构的爆炸示意图；
图3d 是本发明第三实施例的 LED 子屏弯折至叠合时的结构示意图；
图4a 是 本发明 第四实施例中连杆的立体图；
图4b 是本发明 第四实施例连接机构的爆炸示意图；
图4c 是本发明第四实施例的 LED 子屏弯折至叠合时的结构示意图；
图5 是 本发明 第五实施例中连接机构的立体图；
图6 是 本发明 第六实施例中连接机构的立体图；
图7a 图是本发明 定位机构的示意图；
图7b 是本发明定位机构啮合的连接示意图；
图8a 是 本发明 LED 子屏背面视图；
图8b 是本发明相邻两 LED 子屏导线连接示意图；
图8c 是本发明 LED 子屏弯折至叠合时的结构示意图。
具体实施方式
如图 1 所示，本发明提供的一种可自由折叠的柔性 LED 屏幕，由多块 LED 子屏 1 拼接而成。 LED 子屏 1 壳体内设有 PCB 板， PCB 板上设有 LED 25 以及电性连接各 PCB 板的导线 22 。而在上、下、左、右相邻的 LED 子屏 1 之间通过可相对自由转动的连接机构 103 连接。 LED 子屏 1 为预先加工好的小块 LED 屏幕，作为基本单位板，其尺寸一般在 200 * 200 mm 至 80 *80mm 之间，可以是正方形，也可以是矩形。 LED 子屏 1 一侧边设置多少套连接机构 103 ，可以根据 LED 子屏的大小、像素间距来选定。为了实现 LED 屏幕通透的特殊显示效果以及减轻显示屏的重量和通风以降低风阻， PCB 板上也可以设有多个孔洞。导线 22 主要作用是传递电信号和供电。可以一个方向连接，如纵向或横向连接，也可以两个方向连接，即纵向和横向都采用导线 22 连接。
请阅图 1a至图1c， 本发明第一实施例中，连接机构 103 包括：转动杆 2 、设于该转动杆两端的转轴 3 。 LED 子屏 1 的壳体包括前壳和后壳，前壳和后壳的边缘对称设有凹槽 4 ，转动杆两端的转轴 3 分别安装于相邻两 LED 子屏壳体的一凹槽中，而前壳和后壳的凹槽中还设有封盖 5 、 6 ，与转轴 3 对应的封盖 5 设有与转轴配合的转轴槽 7 ，该转轴槽为圆柱孔状或椭圆柱孔状（请阅图 3b ）。用螺钉 8 将两侧的封盖 5 、 6 与前壳和后壳连接成一体，壳体凹槽 4 以及封盖 5 的转轴槽 7 与转动杆的转轴 3 构成使得相邻两 LED 子屏 1 可以自由转动的连接。
由于转动杆 2 两端设计了转轴 3 ，相邻 LED 子屏 1 以转轴 3 为中心旋转折叠时，可以把 360 度的回转分配到两个转轴上，即每个 LED 子屏 1 只需绕转轴旋转 180 度即可，这样可以减少旋转所需的空间，实现了较厚屏幕的折叠和相互之间的连接，同时保证屏幕展开后各个像素点的间距一致。壳体和 PCB 上面，还设计有转动杆 2 转动所需的转动槽 105 ，转动槽设计在 LED 的空隙之间，不会影响 LED 的显示效果。
如图2a、图2b 所示，本发明的第二实施例，其连接机构大体上与第一实施例的相同，不同的是：转动杆 2 由两段杆体由铰链 30 连接而成。根据需要转动杆还可以由多段杆体铰接而成。该结构设计了三个转轴，可用来实现厚度更大的屏幕的折叠。
如图 3a~ 图 3d 所示，本发明的第三实施例，连接机构包括：设于 LED 子屏 1 壳体上、下、左、右边缘的心轴 9 、与相邻两 LED 子屏 1 壳体上的心轴 9 构成转动连接的连杆，连杆上与心轴连接的孔为圆孔 12 （如图 3a 所示）或椭圆孔 13 （如图 3b 所示）。本实施例中，连杆可以由对称连杆轴线的两个半连接块 10 通过螺钉 11 连接成一体。
如 4a~ 图 4c 所示，本发明的第四实施例，其连接机构大体上与第一实施例的相同，不同的是：连杆为杆状构件，并由两段杆体 14 铰接而成。根据需要连杆还可以由一段杆体或多段杆体铰接而成。
如图 5 所示，连接机构还可以采用一段柔性绳 18 ，该柔性绳的两端设有连接头 17 。两端的连接头用于分别卡于相邻 LED 子屏壳体的卡槽中，从而将各块 LED 子屏连接起来。本实施例柔性绳 18 采用钢丝绳，也可以采用尼龙绳或其他柔性材料的绳子，连接头 17 可以用铜或铝锌合金等材料制作。请阅图 1 ，为了在折叠时能提供给钢丝足够弯折的空间，达到自由折叠的目的，壳体在与钢丝绳连接处还设置有内凹的钢丝弯折槽 104 。当然，当 LED 子屏之间的距离足够宽的时候，也可以不要内凹的钢丝弯折槽。 PCB 板上也可以设置与钢丝弯折槽相应的凹槽。相邻子屏 1 之间的导线 22 长度大于钢丝绳 18 的长度，以致钢丝绳 18 受力，达到保护导线 22 不被拉断之目的。钢丝绳 18 也可以用作电性能连接，即用钢丝绳部分替换导线 22 用作电源或电信号传输线。本实施例中的钢丝绳是设于每块子屏之间的一段一段的，整个屏幕是由一段钢丝与一块子屏这样依次串接起来，下面的重量由顶部钢丝绳和壳体的连接来承担，这样整体承重能力较弱，适用于较小、较轻的屏幕。
如图 6 所示，连接机构也可以采用一整根钢丝绳 19 ，在整根弹性绳上间隔的设置连接头 17 ，该连接头用于分别卡于对应的各块 LED 子屏壳体的卡槽中。这样屏幕的重量由整根钢丝绳 19 来承担 ，各块子屏仅仅是附着在钢丝绳 19 上，因此适用于较大较重的屏幕。
如图 7a 、图 7b 所示，相邻两 LED 子屏 1 壳体的端面（横向、纵向端面）设有凹凸球形的定位机构，该定位机构为设于一壳体端面的球形凹槽 20 和设于另一壳体端面的与球形凹槽 20 配合的球形凸台 21 。当各子屏幕展开为一个平面时，球形凸台 21 与球形凹槽 20 互相咬合，可以在上下前后四个方向把子屏相互固定，保证子屏上下前后的间隙一致，子屏的左右距离靠钢丝或转轴来固定，从而保证整个屏幕像素点分布的均匀性，确保屏幕不翘曲，保证屏幕的整体平整度。屏幕收放的时候，球形凹槽和球形凸台可以不干涉的互相分离，不会影响屏幕的收放过程。
如图 8a~ 图 8c 所示， LED 子屏 1 的壳体包括前壳 101 和后壳 102 ，后壳 102 的一端边缘对称设有藏线槽 23 ，后壳的中部还设有隔离凸台 24 。当子屏 1 折叠后，两个子屏 1 之间会有间隙空间，可以作为连接导线 22 的收纳空间，以便导线 22 不被挤压破坏，同时，在导线弯折的地方均设计有圆弧导向，保证导线可以安全的弧度弯折，从而增加导线的寿命。
使用本发明提供的连接机构，可以将 LED 子屏 1 在纵向和横向两方向连接拼成一块大屏幕。当配合 LED 控制器和供电电源后，就可以实现大屏幕的 LED 视频显示。组成后的屏幕可以纵向或横向折叠。屏幕折叠后体积很小，重量相对于传统的箱体屏更轻，运输、存储成本更低，而且安装简单方便。由于 LED 子屏可以相对自由转动和折叠，用户很容易实现弧形、球形、圆柱等异形屏幕，使用方便。本发明的 LED 子屏 1 可以单独使用，可以不需要壳体，仅仅需要 PCB 即可，用于不需要防护的场所。也可以用全灌封胶或半灌封胶工艺对 PCB 进行处理，适用于户外或水底工作。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种可自由折叠的柔性 LED 屏幕，包括多块 LED 子屏，置于 LED 子屏壳体内的 PCB 板、设于 PCB 板上的 LED 和电性连接各 PCB 板的导线，其特征在于：相邻的 LED 子屏之间通过可相对自由转动的连接机构连接。
  2. 如权利要求 1 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述连接机构包括转动杆、设于该转动杆两端的转轴；所述 LED 子屏的壳体包括前壳和后壳，前壳和后壳的边缘对称设有凹槽，所述转动杆两端的转轴分别安装于相邻两 LED 子屏壳体的一凹槽中，而前壳和后壳的凹槽中还设有连接所述转轴的封盖，与转轴对应的封盖设有与转轴构成转动连接的转轴槽，该转轴槽为圆柱孔状或椭圆柱孔状。
  3. 如权利要求 2 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述的转动杆至少由两段杆体由铰链连接而成。
  4. 如权利要求 1 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述连接机构包括设于壳体边缘的心轴、与相邻两 LED 子屏壳体中的心轴构成转动连接的连杆，连杆上与心轴连接的孔为圆孔或椭圆孔。
  5. 如权利要求 4 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述的连杆至少由两段杆体由铰链连接而成。
  6. 如权利要求 4 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述的连杆由对称连杆轴线的两个半连接块通过螺钉连接成一体。
  7. 如权利要求 1 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述的连接机构包括一段柔性绳，该柔性绳的两端设有连接头，两连接头分别卡于相邻 LED 子屏壳体的卡槽中。
  8. 如权利要求 1 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述的连接机构包括一整根柔性绳、间隔设于该整根柔性绳上的连接头，该连接头分别卡于对应的 LED 子屏壳体的卡槽中。
  9. 如权利要求 1 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述的相邻两 LED 子屏壳体的端面设有凹凸球形的定位机构，该定位机构为设于一壳体端面的球形凹槽和设于另一壳体端面的与所述球形凹槽配合的球形凸台。
  10. 如权利要求 1 所述的可自由折叠的柔性 LED 屏幕，其特征在于：所述 LED 子屏的壳体包括前壳和后壳，后壳的边缘对称设有藏线槽，后壳的中部还设有隔离凸台。
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