Holographic display device

Abstract

The present application provides a holographic display device, including a support frame, a curved transparent sheet, a display screen assembly, a light-shielding film, a translucent substrate, and a light source. The present application arranges a translucent substrate and a light-shielding film in front of the display screen assembly. When a user stands in front of the curved transparent sheet, the line of sight first passes through the light-shielding film to the translucent substrate, and then the line of sight is reflected by the translucent substrate to the light-shielding film. Since a light source is arranged in the accommodating chamber, the light intensity in the accommodating chamber is greater than the light intensity outside. The light emitted by the light source is diffusely reflected by the light-shielding film, so that the line of sight cannot be emitted from the accommodating chamber. In combination with the light emitted by the translucent substrate through the display screen assembly, a holographic image effect is achieved in which the display screen is suspended in the accommodating chamber. Therefore, the holographic display device can effectively solve the limitation of traditional holographic equipment that needs to be used in a dark environment through the light source, eliminates the structural design of the inclined semi-reflective glass, and reduces the floor space.

Description

Technical Field

[0001] The present application belongs to the field of holographic projection technology, and more specifically, relates to a holographic display device. Background Art

[0002] Currently, holographic equipment typically uses tilted semi-reflective glass or holographic film installed in the middle of a holographic cabinet, with a display screen or projector installed on top. This creates 3D imaging based on the principles of light reflection and diffraction. Because reflection and diffraction weaken light intensity, optimal imaging requires a low ambient light level. Furthermore, tilted semi-reflective glass or holographic film requires a large footprint, resulting in numerous limitations and limited adaptability for holographic equipment. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a holographic display device to solve the problems in the related art that the holographic equipment needs to be used in an environment with weak external light, occupies a large area, and has poor adaptability.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are:

[0005] A holographic display device is provided, comprising a support frame, a curved transparent sheet mounted on one end of the support frame, and a display screen assembly mounted on the other end of the support frame, wherein the support frame, the curved transparent sheet, and the display screen assembly enclose a accommodating chamber; the holographic display device further comprises a shading film for diffusely reflecting light in the accommodating chamber, a translucent substrate for reflecting light emitted from the display screen assembly to form a holographic image, and a light source for illuminating the accommodating chamber; the shading film is mounted on the inner circumferential surface of the curved transparent sheet facing the display screen assembly, the translucent substrate is mounted on the side of the display screen assembly facing the shading film, and the light source is mounted on the support frame.

[0006] In one embodiment, the support frame includes a frame and two cover plates respectively covering the two opposite open ends of the accommodating chamber, the two cover plates are respectively installed at the two ends of the frame, and the frame is provided with a through hole connecting the display screen assembly and the translucent substrate; the arc-shaped transparent sheet, the shading film and the translucent substrate are all arranged on one side of the frame, the display screen assembly is arranged on the other side of the frame, and the light source is installed on the cover plate.

[0007] In one embodiment, the light source includes light emitting units respectively mounted on the cover plates, and each of the light emitting units is electrically connected to the display screen assembly.

[0008] In one embodiment, the display screen assembly includes a display screen body mounted on the support frame and a main control unit for controlling the display screen body; the main control unit is electrically connected to the display screen body.

[0009] In one embodiment, the holographic display device further includes a rear cover for covering the display screen assembly, and the rear cover is mounted on the support frame.

[0010] In one embodiment, a plurality of heat dissipation holes are provided on the rear shell.

[0011] In one embodiment, the rear shell is arc-shaped, the cross-sections of the arc-shaped transparent sheet and the rear shell are both semicircular, and the cross-sectional area of the arc-shaped transparent sheet is equal to the cross-sectional area of the rear shell.

[0012] In one embodiment, the light-shielding film is a honeycomb-shaped film layer.

[0013] In one embodiment, the holographic display device further includes a touch panel for adjusting the image angle of the display screen assembly; the touch panel is mounted on the support frame, and the touch panel is electrically connected to the display screen assembly.

[0014] In one embodiment, the holographic display device further includes a support platform supporting the support frame and a driving component for driving the support platform to rotate; the driving component is connected to the support platform.

[0015] One or more of the above-mentioned technical solutions in the embodiments of the present application have at least one of the following technical effects: By respectively disposing a translucent substrate and a light-shielding film in front of the display screen assembly, when a user stands in front of the curved transparent sheet, their line of sight first passes through the light-shielding film to the translucent substrate, and then is reflected by the translucent substrate back to the light-shielding film. Because a light source is provided in the accommodating chamber, the light intensity in the accommodating chamber is greater than the external light intensity. The light emitted by the light source is diffusely reflected by the light-shielding film, preventing the line of sight from escaping from the accommodating chamber. Together with the light emitted by the translucent substrate through the display screen assembly, a holographic image effect is achieved, with the display screen suspended in the accommodating chamber. Therefore, the holographic display device, through the light source, can effectively overcome the limitation of traditional holographic devices requiring use in dark environments, eliminating the structural design of tilted semi-reflective glass and reducing the footprint. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a holographic display device provided in an embodiment of the present application;

[0018] Figure 2 An exploded schematic diagram of a holographic display device provided in an embodiment of the present application;

[0019] Figure 3 A schematic cross-sectional view of a front view of a holographic display device provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the three-dimensional structure of the support frame provided in an embodiment of the present application;

[0021] Figure 5 A schematic cross-sectional view of a top view of a holographic display device provided in an embodiment of the present application.

[0022] Among them, the main marks of the drawings in the figure are:

[0023] 1-support frame; 11-frame; 110-through hole; 12-cover plate; 13-touch panel;

[0024] 2-display screen assembly; 21-display screen body; 22-main control unit;

[0025] 3-back cover; 30-heat dissipation holes;

[0026] 4-arc-shaped transparent sheet; 5-accommodating chamber; 6-light-shielding film; 7-translucent substrate; 8-light-emitting unit. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0028] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0030] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0033] See also Figures 1 to 3, the holographic display device provided by the present application is now described. The holographic display device includes a support frame 1, an arc-shaped transparent sheet 4 installed at one end of the support frame 1, and a display screen assembly 2 installed at the other end of the support frame 1. The support frame 1, the arc-shaped transparent sheet 4 and the display screen assembly 2 enclose a closed accommodating chamber 5. The holographic display device also includes a light-shielding film 6 for diffusely reflecting the light in the accommodating chamber 5 to block the light inside the accommodating chamber 5, a translucent substrate 7 for transmitting the light emitted by the display screen assembly 2 to form a holographic image, and a light source (not shown) for illuminating the accommodating chamber 5; the light-shielding film 6 is installed on the inner circumference of the arc-shaped transparent sheet 4 facing the display screen assembly 2, the translucent substrate 7 is installed on the side of the display screen assembly 2 facing the light-shielding film 6, and the light source is installed on the support frame 1. Among them, the translucent substrate 7 can be semi-reflective and translucent glass; the arc-shaped transparent sheet 4 can be made of transparent glass, and neither is limited here. This structure, by placing a translucent substrate 7 and a light-shielding film 6 in front of the display assembly 2, allows a user standing in front of the curved transparent sheet 4 to see their line of sight first through the light-shielding film 6 to the translucent substrate 7. This line of sight is then reflected back to the light-shielding film 6 by the translucent substrate 7. Because the light source is located in the accommodating chamber 5, the light intensity within the accommodating chamber 5 is greater than that outside. Light from the light source is diffusely reflected by the light-shielding film 6, preventing it from escaping the accommodating chamber 5. This light, combined with the light emitted by the translucent substrate 7, transmits light from the display assembly 2, creating a holographic image effect where the display screen appears suspended within the accommodating chamber 5. Therefore, this holographic display device, through its light source, effectively overcomes the limitation of traditional holographic devices requiring dark environments, eliminating the need for tilted semi-reflective glass and reducing floor space.

[0034] In one embodiment, see Figure 3 and Figure 4 As a specific embodiment of the holographic display device provided in this application, the support frame 1 includes a frame 11 and two cover plates 12 that cover the two opposing open ends of the accommodating chamber 5. The two cover plates 12 are mounted at either end of the frame 11. The frame 11 is provided with a through hole 110 that connects the display assembly 2 and the translucent substrate 7. The curved transparent sheet 4, light-shielding film 6, and translucent substrate 7 are all located on one side of the frame 11, while the display assembly 2 is located on the other side of the frame 11. The light source is mounted on the cover plates 12. This structure supports the display assembly 2 and the translucent substrate 7 through the frame 11, facilitating assembly and disassembly. The two cover plates 12 cover the opposing open ends of the curved transparent sheet 4 and, in conjunction with the translucent substrate 7, cover the other open end of the curved transparent sheet 4, thereby sealing the accommodating chamber 5 and providing certain light-shielding, waterproof, and dust-proof properties. The through hole 110 allows light from the image displayed by the display assembly 2 to pass through, forming a holographic image after passing through the translucent substrate 7.

[0035] In one embodiment, first grooves are correspondingly provided on the two cover plates 12, and the two ends of the translucent substrate 7 can be respectively extended into the corresponding first grooves to achieve fixation; alternatively, the translucent substrate 7 can also be bonded to the frame 11; or cooperate with the first groove to play a dual fixing role; alternatively, first card grooves are provided on the opposite sides of the frame 11 in the vertical reverse direction, and the two ends of the translucent substrate 7 can be respectively extended into the corresponding first card grooves to achieve fixation; or cooperate with the first groove to play a dual fixing role. First arcuate grooves that are adapted to the cross-section of the arcuate transparent sheet 4 are correspondingly provided on the two cover plates 12, and the two ends of the arcuate transparent sheet 4 can be respectively extended into the corresponding first arcuate grooves to achieve fixation. Of course, in other embodiments, the connection between the arcuate transparent sheet 4 and the translucent substrate 7 and the support frame 1 can also be adjusted according to actual needs, and this is not the only limitation.

[0036] In one embodiment, see Figure 2 and Figure 3 As a specific embodiment of the holographic display device provided by the present application, the light source includes a light-emitting unit 8 respectively mounted on each cover plate 12, and each light-emitting unit 8 is electrically connected to the display screen assembly 2. This structure, by arranging the light-emitting unit 8 on each cover plate 12, can make the light intensity in the accommodating chamber 5 greater than the light intensity of the external environment, so that the internal light cannot be emitted from the curved transparent sheet 4 after being diffusely reflected by the light-shielding film 6, thereby facilitating the formation of a holographic image and facilitating the use of the holographic display device in a dark environment, with good adaptability. Among them, the light-emitting units 8 on each cover plate 12 are arranged in a one-to-one correspondence, forming a symmetrical distribution structure, and the light uniformity in the accommodating chamber 5 is good. In other embodiments, a plurality of light-emitting units 8 can also be arranged on a single cover plate 12; the arrangement and number of the light-emitting units 8 on each cover plate 12 can be adjusted according to actual needs; each light-emitting unit 8 can also be controlled by a separate power supply, which is not limited here.

[0037] In one embodiment, see Figure 2 and Figure 3 As a specific embodiment of the holographic display device provided in this application, the display screen assembly 2 includes a display screen body 21 mounted on the support frame 1 and a main control unit 22 for controlling the display screen body 21. The display screen body 21 is disposed between the translucent substrate 7 and the main control unit 22, and the main control unit 22 is electrically connected to the display screen body 21. In this structure, the display screen body 21 is used to display images, and the main control unit 22 is used to control the display screen body 21, such as controlling the display screen body 21 to display different images and providing operating current to the display screen body 21.

[0038] In one embodiment, the depth of through hole 110 is equal to the thickness of display screen body 21. Display screen body 21 extends into through hole 110 and can be bonded to translucent substrate 7. Display screen body 21 can be fixed to frame 11 by screws. This structure, on the one hand, facilitates the support and fixation of display screen body 21; on the other hand, extending display screen body 21 into through hole 110 reduces the area occupied by display screen body 21.

[0039] In one embodiment, a second slot is provided at the bottom of the frame 11, and the bottom of the display screen body 21 can be inserted into the second slot to achieve positioning and installation; or, a third slot is vertically provided on two opposite side walls of the frame 11, and the two ends of the display screen body 21 are respectively inserted into the corresponding third slots to achieve positioning and installation; or, the second slot and the third slot are provided at the same time to achieve simultaneous multi-sided fixation of the display screen body 21, which can improve the fixing effect of the display screen body 21; or, second grooves are correspondingly provided on the two cover plates 12, and the two ends of the display screen body 21 are respectively inserted into the corresponding second grooves to achieve fixation; or, the display screen body 21 is directly bonded to the frame 11; or, in combination with the second groove, a double fixing effect is achieved. Of course, in other embodiments, the connection between the display screen body 21 and the support frame 1 can also be adjusted according to actual needs, and this is not the only limitation.

[0040] In one embodiment, see Figure 1 and Figure 2 As a specific embodiment of the holographic display device provided in this application, the holographic display device also includes a rear shell 3 for covering the display screen assembly 2, and the rear shell 3 is mounted on the support frame 1. This structure allows the display screen assembly 2 to be covered by the rear shell 3, improving the safety and aesthetics of the holographic display device. The two cover plates 12 may each be provided with a second arcuate groove, and the two ends of the rear shell 3 may be respectively inserted into the corresponding second arcuate groove for fixation. In other embodiments, the connection between the rear shell 3 and the support frame 1 can also be adjusted according to actual needs, and this is not a sole limitation here.

[0041] In one embodiment, see Figure 1 and Figure 2 As a specific embodiment of the holographic display device provided in this application, a plurality of heat dissipation holes 30 are provided on the rear housing 3. This structure allows the heat generated by the display screen body 21 and the main control unit 22 to be promptly discharged through the heat dissipation holes 30, thereby extending the service life of the holographic display device. In other embodiments, the holographic display device may further include a heat dissipation fan for dissipating heat from the display screen assembly 2. The heat dissipation fan may be mounted on the support frame 1 and electrically connected to the main control unit 22. The heat dissipation effect of the display screen assembly 2 can be improved by the heat dissipation fan. The heat dissipation fan can be arranged opposite to the heat dissipation holes 30 to form air convection, further improving the heat dissipation effect.

[0042] In one embodiment, see Figure 5 As a specific embodiment of the holographic display device provided by the present application, the back shell 3 is arc-shaped, and the cross-sections of the arc-shaped transparent sheet 4 and the back shell 3 are both semicircular. The cross-sectional area of the arc-shaped transparent sheet 4 is equal to the cross-sectional area of the back shell 3. In this structure, the connection between the arc-shaped transparent sheet 4 and the back shell 3 can form a complete cylindrical structure. When a user views the image displayed on the display screen assembly 2 from the front of the arc-shaped transparent sheet 4, the semicircular mirror image formed by the translucent substrate 7 and the light-shielding film 6 can form a visual illusion of a complete cylinder with the semi-cylindrical arc-shaped transparent sheet 4 and the semi-cylindrical back shell 3. The image viewed by the user is suspended in the center of the cylinder, and the holographic image effect is better. In other embodiments, the back shell 3 can also have other configurations, such as square, etc., which is not limited here.

[0043] In one embodiment, as a specific implementation of the holographic display device provided herein, the light-shielding film 6 is a honeycomb-shaped film layer. This structure provides excellent diffuse reflection of light, thereby facilitating the formation of clear holographic images. In other embodiments, the light-shielding film 6 may also have other configurations, and this is not intended to be a limitation.

[0044] In one embodiment, see Figure 1 and Figure 2 As a specific embodiment of the holographic display device provided by this application, the holographic display device also includes a touch panel 13 for adjusting the image angle of the display screen assembly 2. The touch panel 13 is mounted on the support frame 1 and is electrically connected to the display screen assembly 2. This structure allows the image angle of the display screen assembly 2 to be rotated 360 degrees via the touch panel 13, facilitating full-angle viewing of the image.

[0045] In one embodiment, as a specific embodiment of the holographic display device provided in the present application, the holographic display device further includes a support table (not shown) supporting the above-mentioned support frame 1 and a driving assembly (not shown) for driving the support table to rotate; the driving assembly is connected to the support table. In this structure, when the driving assembly drives the support table to rotate, it can also drive the support frame 1 to rotate, thereby enabling users to watch from multiple angles. Among them, the driving assembly can be a motor, and the motor can directly drive the support table to rotate; or the driving assembly and the support table can be connected through a gear assembly to improve the transmission efficiency, which is not the only limitation here.

[0046] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A holographic display device, characterized in that: The holographic display device comprises a support frame, an arc-shaped transparent sheet mounted on one end of the support frame, and a display screen assembly mounted on the other end of the support frame, wherein the support frame, the arc-shaped transparent sheet and the display screen assembly enclose a housing chamber; the holographic display device further comprises a light-shielding film for diffusely reflecting light in the housing chamber to block the light in the housing chamber, a translucent substrate for transmitting light emitted by the display screen assembly to form a holographic image, and a light source for illuminating the housing chamber; the light-shielding film is mounted on the inner circumferential surface of the arc-shaped transparent sheet facing the display screen assembly, the translucent substrate is mounted on the side of the display screen assembly facing the light-shielding film, the light source is mounted on the support frame, the light-shielding film is a honeycomb-shaped film layer, wherein the translucent substrate is semi-reflective and semi-transparent glass; The support frame includes a frame and two cover plates respectively covering the two opposite open ends of the accommodating chamber, the two cover plates are respectively installed at the two ends of the frame, and the frame is provided with a through hole connecting the display screen assembly and the translucent substrate; the arc-shaped transparent sheet, the shading film and the translucent substrate are all arranged on one side of the frame, the display screen assembly is arranged on the other side of the frame, the light source is installed on the cover plates, and the two cover plates are correspondingly provided with first arc-shaped grooves adapted to the cross-section of the arc-shaped transparent sheet, and the two ends of the arc-shaped transparent sheet are respectively extended into the corresponding first arc-shaped grooves for fixation.

2. The holographic display device according to claim 1, wherein: The light source includes light emitting units respectively installed on the cover plates, and each of the light emitting units is electrically connected to the display screen assembly.

3. The holographic display device according to claim 1, wherein: The display screen assembly includes a display screen body mounted on the support frame and a main control unit for controlling the display screen body; the main control unit is electrically connected to the display screen body.

4. The holographic display device according to claim 1, wherein: The holographic display device also includes a rear shell for covering the display screen assembly, and the rear shell is installed on the supporting frame.

5. The holographic display device according to claim 4, wherein: The rear shell is provided with a plurality of heat dissipation holes.

6. The holographic display device according to claim 4, wherein: The rear shell is in an arc shape, the cross section of the arc-shaped transparent sheet and the cross section of the rear shell are both semicircular, and the cross section area of the arc-shaped transparent sheet is equal to the cross section area of the rear shell.

7. The holographic display device according to any one of claims 1 to 6, wherein: The holographic display device also includes a touch panel for adjusting the image angle of the display screen assembly; the touch panel is installed on the support frame, and the touch panel is electrically connected to the display screen assembly.

8. The holographic display device according to any one of claims 1 to 6, wherein: The holographic display device further includes a support platform supporting the support frame and a driving component for driving the support platform to rotate; the driving component is connected to the support platform.

Images