Far image display device

Abstract

The utility model relates to a far image display device, which comprises a semi-transparent and semi-reflecting plate, a concave mirror and a distance adjusting piece. The axial direction of the concave mirror is horizontal, and the concave surface of the concave mirror faces the semi-transparent and semi-reflective plate. One end of the spacing adjusting piece is connected with the upper end of the concave mirror, the other end of the spacing adjusting piece is hinged to the upper end of the semi-transparent and semi-reflecting plate, and the spacing adjusting piece can adjust the horizontal spacing between the semi-transparent and semi-reflecting plate and the concave mirror. The semi-transparent and semi-reflective plate can turn over up and down around the upper end of the semi-transparent and semi-reflective plate relative to the concave mirror and can be selectively fixed at any position within the turning range so as to adjust the included angle between the lower end of the semi-transparent and semi-reflective plate and the horizontal direction. The structure is simple, image sources in different placement states can be displayed by rotating the semi-transparent and semi-reflecting plate and / or adjusting the horizontal distance between the semi-transparent and semi-reflecting plate and the upper end of the concave mirror through the distance adjusting part, and the imaging quality can be conveniently adjusted. And the remote image display device is suitable for remote image display of horizontally placed books and magazines, display screens of mobile computers with different turning angles and other image sources with different included angles with the horizontal direction.

Description

Technical Field

[0001] This utility model relates to the field of far-image display technology, and in particular to a far-image display device. Background Technology

[0002] The far-viewing display device consists of a semi-transparent and semi-reflective plate and a concave mirror. The surface of the image source, such as a book or magazine, must have a certain angle with the semi-transparent and semi-reflective plate. The image light reflected from the image source is transmitted to the semi-transparent and semi-reflective plate, then reflected by the semi-transparent and semi-reflective plate to the concave mirror. After being reflected and magnified by the concave mirror, it passes through the semi-transparent and semi-reflective plate and enters the human eye. This increases the distance between the user and the image and magnifies the image, thereby relaxing the user's eyes and reducing the user's risk of myopia.

[0003] In traditional far-image display devices, the semi-transparent and semi-reflective plate and the concave mirror have a fixed angle. Because the image light reflected from the image source is perpendicular to the image source surface, and the image source surface and the semi-transparent and semi-reflective plate must have a certain angle for the image light to be reflected and transmitted between the image source surface, the semi-transparent and semi-reflective plate, and the concave mirror, this design is only suitable for displaying image sources such as horizontally placed books and magazines located below the device. It is not suitable for image sources such as screens placed at an angle to the horizontal. Furthermore, traditional far-image display devices are mounted on the outer frame of a cabinet, making them bulky, and the image source must be placed inside the outer frame during use, which is cumbersome. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a multi-angle far-view display device, which solves the technical problem that traditional far-view display devices can only be used for displaying far-view images of books and magazines laid flat below the far-view display device.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] In a first aspect, this utility model provides a remote image display device, including a semi-transparent and semi-reflective plate and a concave mirror, and also includes a spacing adjustment component;

[0009] The concave mirror is horizontal in axis, and the concave surface of the concave mirror faces the semi-transparent and semi-reflective plate.

[0010] One end of the spacing adjustment component is connected to the upper end of the concave mirror, and the other end is hinged to the upper end of the semi-transparent and semi-reflective plate. The spacing adjustment component can adjust the horizontal spacing between the semi-transparent and semi-reflective plate and the concave mirror.

[0011] The semi-transparent and semi-reflective plate can be rotated up and down relative to the concave mirror around its upper end and can be selectively fixed at any position within the rotation range to adjust the angle between the lower end of the semi-transparent and semi-reflective plate and the horizontal direction.

[0012] According to this utility model, the spacing adjustment component includes a first rotating plate and a second rotating plate;

[0013] The first end of the first rotating plate is rotatably hinged to the first end of the second rotating plate about a horizontal axis, the second end of the first rotating plate is rotatably hinged to the upper end of the semi-transparent and semi-reflective plate about a horizontal axis, and the second end of the second rotating plate is rotatably hinged to the upper end of the concave mirror about a horizontal axis.

[0014] When the first end of the first rotating plate and the second rotating plate rotate relative to each other around the horizontal axis, the horizontal distance between the semi-transparent and semi-reflective plate and the concave mirror can be adjusted.

[0015] According to this utility model, the spacing adjustment component further includes an angle locking component;

[0016] The angle locking assembly includes a disc, a sleeve, and a rod;

[0017] The first ends of the first rotating plate and the second rotating plate are both hinged to the disk body around a horizontal axis, and the peripheral wall of the disk body is provided with a plurality of limiting grooves at intervals along its circumference;

[0018] A sleeve is fixed on the side wall of the first or second rotating plate, with the first end of the sleeve facing the peripheral wall of the disc body;

[0019] The insertion rod is movably inserted into the sleeve along the axial direction of the sleeve;

[0020] When the insert rod moves away from the first end of the sleeve until it is disengaged from the limiting groove, the first end of the first rotating plate and the first end of the second rotating plate can rotate relative to each other around the horizontal axis.

[0021] When the insertion rod moves toward the first end of the sleeve and is inserted into one of the limiting grooves on the disc body, the first end of the first rotating plate and the first end of the second rotating plate are locked together.

[0022] According to this utility model, the peripheral wall of the disc body is provided with scales corresponding to the plurality of limiting grooves;

[0023] When the insert rod moves into one of the limiting slots on the disc body, the scale is used to indicate the included angle between the first end of the first rotating plate and the first end of the second rotating plate.

[0024] According to this utility model, the angle locking component further includes an elastic element;

[0025] The elastic element is sleeved on the peripheral wall of the insertion rod extending from the first end of the sleeve. One end of the elastic element abuts against the limiting platform of the peripheral wall of the insertion rod, and the other end abuts against the end of the first end of the sleeve.

[0026] According to this utility model, it also includes a first frame and a second frame;

[0027] The concave mirror is fixed to the first frame;

[0028] The semi-transparent, semi-reflective plate is fixed to the second frame.

[0029] According to this utility model, the second frame has a groove or handle for gripping.

[0030] The second frame is equipped with a fill light that can be directed toward the image source.

[0031] According to this utility model, a height-adjustable support bracket is fixedly provided on the side of the first frame away from the second frame, which can support it on the working surface; or,

[0032] The VESA chassis is fixedly mounted on the side of the first frame away from the second frame.

[0033] According to this utility model, it also includes a multi-stage telescopic rod, the two ends of which are hinged to the first frame and the second frame, and the multi-stage telescopic rod can extend and shorten along its own axis.

[0034] According to this utility model, a hydrophobic and dustproof layer is laid on the side of the semi-transparent and semi-reflective plate away from the concave mirror.

[0035] (III) Beneficial Effects

[0036] The beneficial effects of this utility model are as follows: The remote image display device provided by this utility model mainly consists of a semi-transparent and semi-reflective plate, a concave mirror, and a telescopic rod. Its structure is simple. In use, the device is placed above the image source, and the horizontal distance between the semi-transparent and semi-reflective plate and the upper end of the concave mirror is adjusted by rotating the semi-transparent and semi-reflective plate and / or by adjusting the spacing adjustment component. This allows for the display of images from image sources in different placement states and convenient adjustment of image quality. This operation is relatively simple and convenient, and it is suitable for displaying images from image sources with different angles to the horizontal, such as horizontally placed books and magazines, and mobile computer displays with different flip angles. It has wide applicability, meeting the display needs of different image sources and different user groups. Simultaneously, the angle between the lower end of the semi-transparent and semi-reflective plate and the horizontal direction can be easily adjusted, preventing excessive tilting of the semi-transparent and semi-reflective plate from affecting the viewing experience. After adjusting the angle by flipping up and down, it is fixed in the current position, ensuring the stability of the semi-transparent and semi-reflective plate during use. Furthermore, when not in use, the lower end of the semi-transparent and semi-reflective plate can be rotated toward the concave mirror, and the horizontal distance between the semi-transparent and semi-reflective plate and the upper end of the concave mirror can be reduced by adjusting the spacing, thereby reducing the overall size of the far-image display device and making it easier to store. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the image display device of this utility model when used with an image source placed at an angle to the horizontal direction.

[0038] Figure 2 for Figure 1 Rear view;

[0039] Figure 3 for Figure 2 Enlarged view of point C;

[0040] Figure 4 This is an exploded view of the stent;

[0041] Figure 5 This is a top view of the bracket (the support plate is not shown).

[0042] Figure 6 This is a side view of the image display device of the present invention when used to display an image source that is tilted in a horizontal direction;

[0043] Figure 7 This is a side view of the image display device of the present invention when used to display a horizontally placed image source;

[0044] Figure 8 This is a diagram illustrating the stored state.

[0045] Figure 9 A remote image display device for setting a first limiting plate and a second limiting plate, which is used to display a side view of the device when an image source is tilted in a horizontal direction;

[0046] Figure 10 A schematic diagram of the retracted state of the far-image display device with the first and second limiting plates.

[0047] [Explanation of Labels in the Attached Image]

[0048] 1; Semi-transparent and semi-reflective sheet;

[0049] 2; Concave mirror;

[0050] 3: Spacing adjustment component; 31: First rotating plate; 32: Second rotating plate; 321: First limiting plate; 33: Angle locking assembly; 331: Disc body; 3311: Limiting groove; 3312: Hinge shaft; 332: Sleeve; 333: Insert rod; 3331: Limiting platform; 334: Elastic component; 335: Nut;

[0051] 4; First frame; 41; Second limiting plate;

[0052] 5; Second framework;

[0053] 6; Shaft;

[0054] 8; bracket; 81; slide rail; 82; vertical plate; 83; pressure plate; 84; nut; 85; screw; 86; support plate;

[0055] 9; Multi-stage telescopic pole;

[0056] 10: VESA chassis;

[0057] A: Books and magazines; B: Mobile computer. Detailed Implementation

[0058] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper" and "lower" are used interchangeably with... Figure 1 The orientation is used as a reference.

[0059] See Figure 1-10 The remote image display device proposed in this embodiment of the utility model is capable of displaying a remote image of the observation surface of the object to be viewed below.

[0060] The remote image display device includes a semi-transparent and semi-reflective plate 1, a concave mirror 2, and a spacing adjustment component 3.

[0061] The concave mirror 2 is horizontal in axis, and its concave surface faces the semi-transparent and semi-reflective plate 1. One end of the spacing adjustment component 3 is connected to the upper end of the concave mirror 2, and the other end is hinged to the upper end of the semi-transparent and semi-reflective plate 1. The spacing adjustment component 3 can adjust the horizontal spacing between the semi-transparent and semi-reflective plate 1 and the concave mirror 2. The semi-transparent and semi-reflective plate 1 can be rotated up and down relative to the concave mirror 2 around its upper end and can be selectively fixed at any position within the rotation range to adjust the angle between the lower end of the semi-transparent and semi-reflective plate 1 and the horizontal direction.

[0062] This remote image display device is suitable for displaying remote images from image sources that are placed horizontally or tilted in a horizontal direction.

[0063] See Figure 7 When it is necessary to display images of books, magazines, etc., placed horizontally on a work surface such as a desktop, the image source is placed below the image display device. The semi-transparent and semi-reflective plate 1 is rotated so that the semi-transparent and semi-reflective plate 1 rotates up and down around its upper end relative to the concave mirror 2 until there is a certain angle with the surface of the image source. This allows the image light emitted vertically from the surface of the image source to be transmitted vertically upward to the semi-transparent and semi-reflective plate 1 above. Then, it is reflected by the side of the semi-transparent and semi-reflective plate 1 near the concave mirror 2 to the concave surface of the concave mirror 2. Finally, it is reflected and amplified by the concave surface of the horizontally axial concave mirror 2 and passes through the semi-transparent and semi-reflective plate 1 into the human eye.

[0064] See Figure 6 When it is necessary to display an image source such as the screen of a mobile computer B placed on an inclined working surface, the image light reflected from the surface of the image source is inclined in the vertical direction and cannot be directly transmitted to the semi-transparent and semi-reflective plate 1 above because the surface of the image source is inclined in the horizontal direction. Therefore, it is necessary to increase the horizontal distance between the semi-transparent and semi-reflective plate 1 and the concave mirror 2 by adjusting the distance 3 so that the image light emitted vertically from the surface of the image source can be transmitted to the side of the semi-transparent and semi-reflective plate 1 near the concave mirror 2 on the front upper side. At the same time, it is also necessary to rotate the semi-transparent and semi-reflective plate 1 so that the semi-transparent and semi-reflective plate 1 is rotated up and down relative to the concave mirror 2 around its upper end so that there is a certain angle between the semi-transparent and semi-reflective plate 1 and the surface of the image source. This allows the image light transmitted to the side of the semi-transparent and semi-reflective plate 1 near the concave mirror 2 to be reflected to the concave surface of the concave mirror 2, and then reflected and amplified by the concave surface of the horizontally inclined concave mirror 2 before passing through the semi-transparent and semi-reflective plate 1 and entering the human eye.

[0065] As shown above, this telephoto display device mainly consists of a semi-transparent and semi-reflective plate 1, a concave mirror 2, and a spacing adjustment component 3. Its structure is simple. In use, the device is placed above the image source, and the horizontal spacing between the semi-transparent and semi-reflective plate 1 and / or the upper end of the concave mirror 2 is adjusted by rotating the semi-transparent and semi-reflective plate 1 and / or by adjusting the spacing adjustment component 3. This allows for the display of images from image sources in different placement states and convenient adjustment of image quality. This operation is relatively simple and convenient, and it is suitable for displaying images from image sources with different angles to the horizontal, such as horizontally placed books / magazines A and mobile computer screens B with different flip angles. It has wide applicability, meeting the display needs of different image sources and different user groups. Simultaneously, the semi-transparent and semi-reflective plate 1 of this telephoto display device can be easily adjusted to change the angle between its lower end and the horizontal direction, preventing excessive tilting of the semi-transparent and semi-reflective plate 1 from affecting the viewing experience. After adjusting the angle by flipping it up and down, it is fixed in the current position, ensuring the stability of the semi-transparent and semi-reflective plate 1 during use. Furthermore, when not in use, the lower end of the semi-transparent semi-reflective plate 1 can be rotated toward the concave mirror 2 and the horizontal distance between the semi-transparent semi-reflective plate 1 and the upper end of the concave mirror 2 can be reduced by the spacing adjustment component 3, so as to reduce the overall size of the far-image display device and facilitate its storage.

[0066] Preferably, during use, the semi-transparent and semi-reflective plate 1 is rotated until the angle between its lower end and the horizontal direction is not less than 45° to avoid excessive tilting of the semi-transparent and semi-reflective plate 1, which would affect the user's viewing experience.

[0067] Preferably, a hydrophobic and dustproof layer is laid on the side of the semi-transparent and semi-reflective plate 1 away from the concave mirror 2 to protect the semi-transparent and semi-reflective plate 1.

[0068] Furthermore, the spacing adjustment component 3 includes a first rotating plate 31 and a second rotating plate 32.

[0069] The first end of the first rotating plate 31 is rotatably hinged to the first end of the second rotating plate 32 about a horizontal axis, the second end of the first rotating plate 31 is rotatably hinged to the upper end of the semi-transparent and semi-reflective plate 1 about a horizontal axis, and the second end of the second rotating plate 32 is rotatably hinged to the upper end of the concave mirror 2 about a horizontal axis.

[0070] When the first ends of the first rotating plate 31 and the second rotating plate 32 rotate relative to each other around the horizontal axis, the horizontal distance between the semi-transparent and semi-reflective plate 1 and the concave mirror 2 can be adjusted. This adjustment method is simple and convenient.

[0071] Meanwhile, when not in use, the first ends of the first rotating plate 31 and the second rotating plate 32 can be rotated relative to each other around the horizontal axis until the side walls of the first rotating plate 31 and the second rotating plate 32 are in contact with each other, and the lower end of the semi-transparent and semi-reflective plate 1 is rotated toward the concave mirror 2 so that the side walls of the semi-transparent and semi-reflective plate 1 and the concave mirror 2 are in contact with each other, so as to reduce the overall volume of the far-image display device and facilitate its storage.

[0072] Specifically, in order to precisely adjust and lock the included angle between the first end of the first rotating plate 31 and the first end of the second rotating plate 32, so as to precisely adjust and lock the horizontal distance between the semi-transparent and semi-reflective plate 1 and the concave mirror 2, the distance adjustment component 3 also includes an angle locking component 33.

[0073] The angle locking assembly 33 includes a disc 331, a sleeve 332, and a plug 333.

[0074] The first ends of both the first rotating plate 31 and the second rotating plate 32 are rotatably hinged to the disc body 331 about a horizontal axis. Multiple limiting grooves 3311 are spaced apart along the circumferential direction on the peripheral wall of the disc body 331. A sleeve 332 is fixed to the side wall of either the first rotating plate 31 or the second rotating plate 32, with the first end of the sleeve 332 corresponding to the peripheral wall of the disc body 331. An insert rod 333 is movably inserted into the sleeve 332 along its axial direction.

[0075] When the insertion rod 333 moves away from the first end of the sleeve 332 and disengages from the limiting groove 3311, the first end of the first rotating plate 31 and the first end of the second rotating plate 32 can rotate relative to each other around the horizontal axis to adjust the included angle between the first end of the first rotating plate 31 and the first end of the second rotating plate 32.

[0076] After the included angle between the first end of the first rotating plate 31 and the first end of the second rotating plate 32 is adjusted, the insertion rod 333 is moved towards the first end of the sleeve 332 into a limiting groove 3311 on the insertion disc 331. The first end of the first rotating plate 31 and the first end of the second rotating plate 32 are locked and cannot rotate relative to each other, so as to lock the included angle between the first ends of the first rotating plate 31 and the second rotating plate 32.

[0077] Therefore, this angle locking component can conveniently lock and adjust the included angle between the first ends of the first rotating plate 31 and the second rotating plate 32.

[0078] It should be noted that the hinge damping between the upper ends of the first rotating plate 31 and the semi-transparent semi-reflective plate 1, and between the upper ends of the second rotating plate 32 and the concave mirror 2, is set to be adjustable and maintain the included angle between the upper ends of the first rotating plate 31 and the semi-transparent semi-reflective plate 1, and the included angle between the upper ends of the second rotating plate 32 and the concave mirror 2.

[0079] Specifically, see Figure 9 A first limiting plate 321 is provided parallel to the top of the first end of the second rotating plate 32. The first limiting plate 321 protrudes from the first end of the second rotating plate 32 to limit the maximum included angle between the first rotating plates 31 and 32 during rotation adjustment to 180°, that is, to limit the first rotating plate 31 and 32 from rotating to... Figure 10 The storage states shown are rotated relative to each other until they are in a position where Figure 9 The first rotating plate 31 and the second rotating plate 32 shown are in a straight line.

[0080] Specifically, the end face of the disc 331 is provided with scales corresponding to a plurality of limiting grooves 3311. When the insertion rod 333 moves into a limiting groove 3311 on the disc 331, the scale is used to indicate the angle between the first end of the first rotating plate 31 and the first end of the second rotating plate 32, so that the operator can accurately adjust the angle.

[0081] Specifically, the angle locking assembly 33 also includes an elastic element 334 for providing a restoring force to the insert 333 after the included angle adjustment is completed.

[0082] The elastic element 334 is sleeved on the peripheral wall of the first end of the sleeve 332 where the insertion rod 333 extends. One end of the elastic element 334 abuts against the limiting platform 3331 provided on the peripheral wall of the insertion rod 333, and the other end abuts against the end of the first end of the sleeve 332.

[0083] In the initial state, the end of the insertion rod 333 is inserted into a limiting groove 3311 on the disc body 331, and the spring 334 is in a relaxed state to lock the included angle between the first ends of the first rotating plate 31 and the second rotating plate 32.

[0084] When it is necessary to adjust the included angle between the first ends of the first rotating plate 31 and the second rotating plate 32, the operator pulls the insertion rod 333 so that the insertion rod 333 carries the pulling force and moves towards the first end of the sleeve 332 until the end of the insertion rod 333 disengages from the limiting groove 3311. The elastic element 334 contracts and deforms, and the first ends of the first rotating plate 31 and the first ends of the second rotating plate 32 can rotate relative to each other around the horizontal axis to adjust the included angle between them.

[0085] After the angle between the first ends of the first rotating plate 31 and the second rotating plate 32 is adjusted, the operator releases the insertion rod 333 so that the pulling force carried by the insertion rod 333 is canceled, the elastic element 334 returns and drives the insertion rod 333 to move away from the first end of the sleeve 332 and insert into a limiting groove 3311 on the disc body 331 to lock the angle between the first ends of the first rotating plate 31 and the second rotating plate 32.

[0086] Preferably, the elastic element 334 is a spring.

[0087] Specifically, two hinge shafts 3312 are fixed at intervals on the end face of the disc body 331. The two hinge shafts 3312 are respectively inserted into the hinge seats at the first ends of the first rotating plate 31 and the second rotating plate 32. The two hinge shafts 3312 extend out of the hinge seats at the first ends of the first rotating plate 31 and the second rotating plate 32 and are threadedly connected to nuts 335 to prevent the hinge shafts 3312 from disengaging from the hinge seats. Thus, the disc body 331 can be hinged so that the first ends of the first rotating plate 31 and the second rotating plate 32 can rotate around a horizontal axis.

[0088] Furthermore, the multi-angle far-view display device also includes a first frame 4 and a second frame 5.

[0089] The concave mirror 2 is inserted into and fixed to the first frame 4, and the semi-transparent and semi-reflective plate 1 is inserted into and fixed to the second frame 5, so as to support and protect the concave mirror 2 and the semi-transparent and semi-reflective mirror respectively.

[0090] See Figure 10 A second limiting plate 41 is provided on the upper end of the first frame 4 away from the second frame 5, and the second limiting plate 41 protrudes from the upper end of the first frame 4 to limit the maximum included angle between the second end of the second rotating plate 32 and the upper end of the concave mirror 2 to 180°, that is, to limit the first rotating plate 31 and the second rotating plate 32 from moving away from each other. Figure 9 The first rotating plate 31 and the second rotating plate 32 shown are in a straight line and rotate relative to each other until they are in a straight line. Figure 10 The storage status is shown.

[0091] Preferably, the second frame 5 is provided with a supplementary light that can face the image source to increase the brightness of the image light reflected from the surface of the image source and improve the imaging quality.

[0092] Preferably, the second frame 5 has a groove or handle for gripping, so that the operator can grip and push the second frame 5.

[0093] Specifically, a height-adjustable support 8 is fixedly installed on the side of the first frame 4 away from the second frame 5, capable of supporting the work surface; or,

[0094] A VESA chassis 10 is fixedly mounted on the side of the first frame 4 away from the second frame 5 to accommodate a height-adjustable VESA bracket. The VESA (Video Electronics Standards Association) chassis refers to a mounting chassis that conforms to common flat panel display mounting standards. A VESA bracket is a monitor stand or wall mount that conforms to VESA standards and can be mounted onto the VESA chassis 10.

[0095] Therefore, by using bracket 8 or VESA bracket, the overall height of the far-view display device can be adjusted so that the height of the semi-transparent and semi-reflective plate 1 can be adapted to the eye level of adults and children of different heights, thereby expanding the range of people to whom the device is applicable.

[0096] More specifically, the bracket 8 can be configured in the following two ways:

[0097] The first configuration is as follows: the bracket 8 includes a slide rail 81, a vertical plate 82, a pressure plate 83, a nut 84, and a screw 85.

[0098] The slide rail 81 is vertically oriented and fixed on the side of the first frame 4 away from the second frame 5. The opening of the slide rail 81 is bent inward to form a resting part.

[0099] The vertical plate 82 is an elongated plate. The vertical plate 82 and the pressure plate 83 are spaced apart and both are located within the space enclosed by the slide rail 81. The pressure plate 83 includes a groove facing the vertical plate 82 and two horizontal portions extending outward horizontally along both sides of the opening of the groove. The groove of the pressure plate 83 is fixed with an axially horizontal nut 84.

[0100] The screw 85 is horizontally oriented and is inserted into and screwed into the groove and nut 84 in sequence, and then passes through the light hole on the vertical plate 82.

[0101] See Figure 5 When it is necessary to lock the bracket 8, rotate the screw 85 around the first direction so that the nut 84 drives the pressure plate 83 to move away from the vertical plate 82, until the two sides of the groove of the pressure plate 83 and the two horizontal parts are pressed against the abutment of the slide rail 81, so as to lock the pressure plate 83 on the slide rail 81, and then the screw 85 supports and fixes the height position of the vertical plate 82.

[0102] When the height of the bracket 8 needs to be adjusted, the screw 85 is rotated in the opposite direction of the first direction so that the nut 84 drives the pressure plate 83 to move toward the direction close to the vertical plate 82, until the two sides of the groove of the pressure plate 83 and the two horizontal parts are away from the abutment of the slide rail 81, so that the pressure plate 83 is released. Then, the height of the vertical plate 82 is adjusted by raising and lowering. The vertical plate 82 drives the pressure plate 83 to rise and fall synchronously through the screw 85, so as to realize the height adjustment of the bracket 8.

[0103] More specifically, a horizontally oriented support plate 86 is fixedly installed at the bottom of the vertical plate 82, which supports the working surface and improves the support strength.

[0104] The second configuration is as follows: the bracket 8 is a vertically oriented telescopic rod, which can vertically extend and retract to adjust the height of the bracket 8.

[0105] Preferably, the remote image display device further includes a multi-stage telescopic rod 9.

[0106] The first frame 4 and the second frame 5 are hinged at both ends of the multi-stage telescopic rod 9. The multi-stage telescopic rod 9 can extend and shorten along its own axis to be suitable for assisting in adjusting the spacing and / or the angle with the horizontal direction of the second frame 5, thereby improving the stability of the semi-transparent and semi-reflective plate 1.

[0107] It should be noted that the multi-stage telescopic rods 9 are all commonly used telescopic mechanisms, and their telescopic working principle will not be elaborated here.

[0108] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0109] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0110] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0111] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A far- field display device comprising a half- transmissive half- reflective plate (1) and a concave mirror (2), characterized in that, Further comprising a distance adjusting member (3); The concave mirror (2) is horizontally axially arranged, and the concave surface of the concave mirror (2) faces the half-transmission half-reflection plate (1); One end of the distance adjusting member (3) is connected to the upper end of the concave mirror (2), and the other end is hingedly connected to the upper end of the half-transmission half-reflection plate (1), and the distance adjusting member (3) can adjust the horizontal distance between the half-transmission half-reflection plate (1) and the concave mirror (2); The half-transmission half-reflection plate (1) can be flipped up and down relative to the concave mirror (2) around the upper end thereof and can be selectively fixed at any position within the flipping range to adjust the included angle between the lower end of the half-transmission half-reflection plate (1) and the horizontal direction.

2. The telecentric display device of claim 1, wherein The distance adjusting member (3) comprises a first rotating plate (31) and a second rotating plate (32); The first end of the first rotating plate (31) is hingedly connected to the first end of the second rotating plate (32) around a horizontal axis, the second end of the first rotating plate (31) is hingedly connected to the upper end of the half-transmission half-reflection plate (1) around a horizontal axis, and the second end of the second rotating plate (32) is hingedly connected to the upper end of the concave mirror (2) around a horizontal axis; When the first ends of the first rotating plate (31) and the second rotating plate (32) are relatively rotated around a horizontal axis, the horizontal distance between the half-transmission half-reflection plate (1) and the concave mirror (2) can be adjusted.

3. The telecentric display device of claim 2, wherein, The distance adjusting member (3) further comprises an angle locking assembly (33); The angle locking assembly (33) comprises a disc body (331), a sleeve (332) and a plug rod (333); The first ends of the first rotating plate (31) and the second rotating plate (32) are hingedly connected to the disc body (331) around a horizontal axis, and a plurality of limiting grooves (3311) are formed in the circumferential wall of the disc body (331) at intervals along the circumference thereof; The sleeve (332) is fixed on the side wall of the first rotating plate (31) or the second rotating plate (32), and the first end of the sleeve (332) faces the circumferential wall of the disc body (331); The plug rod (333) is movably inserted into the sleeve (332) along the axial direction of the sleeve (332); When the plug rod (333) moves away from the first end of the sleeve (332) to disengage from the limiting grooves (3311), the first ends of the first rotating plate (31) and the second rotating plate (32) can be relatively rotated around a horizontal axis; When the plug rod (333) moves towards the first end of the sleeve (332) to be inserted into one of the limiting grooves (3311) on the disc body (331), the first ends of the first rotating plate (31) and the second rotating plate (32) are locked.

4. The telephoto display device according to claim 3, wherein The disc body (331) is provided with a scale corresponding to the plurality of limiting grooves (3311); When the plug rod (333) is moved to be inserted into one of the limiting grooves (3311) on the disc body (331), the scale is used to indicate the included angle of the first ends of the first rotating plate (31) and the second rotating plate (32).

5. The telecentric display device of claim 3, wherein, The angle locking assembly (33) further comprises a resilient member (334); The resilient member (334) is sleeved on the peripheral wall of the first end of the sleeve (332) where the insertion rod (333) extends, one end of the resilient member (334) abuts against a limiting platform (3331) arranged on the peripheral wall of the insertion rod (333), and the other end abuts against the end of the first end of the sleeve (332).

6. The telecentric display device of claim 1, wherein, Further comprising a first frame (4) and a second frame (5); The concave mirror (2) is fixed on the first frame (4); The semi-transparent and semi-reflective plate (1) is fixed on the second frame (5).

7. The telecentric display device of claim 6, wherein, A groove or handle for holding is arranged on the second frame (5), A light supplementing lamp capable of being directed towards the image source is arranged on the second frame (5).

8. The telecentric display device of claim 6, wherein, A support (8) capable of being supported on a work surface and adjustable in height is fixed on the side of the first frame (4) away from the second frame (5); or, A VESA chassis (10) is fixed on the side of the first frame (4) away from the second frame (5).

9. The telecentric display device of claim 6, wherein, Further comprising a multi-stage telescopic rod (9), both ends of the multi-stage telescopic rod (9) are hinged to the first frame (4) and the second frame (5), and the multi-stage telescopic rod (9) is capable of being elongated and shortened along its own axis.

10. The telecentric display device of claim 1, wherein, A hydrophobic and dustproof layer is arranged on the side of the semi-transparent and semi-reflective plate (1) away from the concave mirror (2).

Images