Portable holographic projection device

Abstract

The utility model discloses a portable holographic projection device, which relates to the technical field of holographic projection application and comprises a frame, the bottom surfaces of four borders of the frame are respectively provided with a sliding chute, a plurality of limiting springs are connected in each group of sliding chutes, the bottom ends of each group of limiting springs are respectively connected with a corresponding limiting block, and the limiting blocks are arranged in the sliding chutes. The sliding groove in the frame is in sliding contact with the limiting blocks, and a limiting groove is formed in the bottom end of the side, facing the vertical center shaft of the frame, of each limiting block. The projection sheets are separated from each other by sequentially lifting the limiting blocks by different distances, then the projection sheets are sequentially folded inwards along the connecting positions of the projection sheets and the corresponding limiting blocks in the reverse direction according to the lifting sequence of the limiting blocks, the size of the device is reduced, when the projection sheets need to be used, the projection sheets face downwards, at the moment, the projection sheets are unfolded downwards, and the projection sheets are folded inwards. And the limiting blocks are sequentially pressed back according to the folding sequence of the screen sheets, so that the edges of the screen sheets are in contact again, and rapid unfolding of the device is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of holographic projection application, in particular to a portable holographic projection device. Background Art

[0002] Holographic projection is a technology that produces realistic three-dimensional images by recording and reproducing the interference pattern of light. The basis of holographic projection is the theory of optical interference. Interference refers to the phenomenon of relative enhancement or weakening of waves produced when two or more light waves are superimposed on each other. Holographic projection uses the principle of interference to record the phase and amplitude information of light waves. Holographic projection technology is widely used in scientific research, medical imaging, education and training, artistic expression, advertising and other fields. For example, in the field of medical imaging, holographic projection can provide clearer and more realistic three-dimensional anatomical models to help doctors diagnose and plan surgeries.

[0003] The structure of a holographic projection system usually includes the following main components: a holographic recording device, which is used to record the optical information of a three-dimensional object. It usually includes a laser light source, a beam splitter, an object stage and a holographic recording medium. The laser light source generates a beam of coherent light, which is divided into two parts by the beam splitter: one part is directly irradiated onto the holographic recording medium as a reference light; the other part, after being reflected or passing through the three-dimensional object, meets the reference light and forms an interference pattern, which is recorded on the holographic recording medium; the holographic recording medium is a medium for recording interference patterns, which can be holographic silver, holographic polymer, holographic glass, etc. The recording medium is very sensitive to the laser beam and can record the complex interference pattern; the holographic reproduction device, the holographic reproduction device is used to reproduce the three-dimensional image recorded on the holographic medium, it usually includes a laser light source, an optical system and a holographic projection, the laser light source generates a beam of coherent light, the optical system adjusts the beam into a form suitable for reproduction, and then irradiates the holographic projection on which the interference pattern is recorded; the holographic projection, the holographic projection is a special optical element that can reproduce the optical information of three-dimensional objects, the holographic projection is usually made of a holographic recording medium, it records the interference pattern, and can produce realistic three-dimensional images under the irradiation of light.

[0004] Currently, holographic display cabinets using holographic projection technology for display are widely used in the market. However, holographic display cabinets composed of holographic projection films are generally difficult to carry conveniently. They can generally only be placed in exhibition halls. It is troublesome to carry them to other places. In addition, holographic projection cabinets with some assembled structures are cumbersome to install, so it is difficult to meet social needs. Therefore, a holographic projection device that can quickly store and unfold is proposed to solve the above problems. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a portable holographic projection device to solve the technical problems that traditional devices are large in size, inconvenient to carry and cannot be quickly unfolded.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable holographic projection device, comprising a frame, the bottom surfaces of the four frames of the frame are all provided with sliding grooves, and each group of sliding grooves is connected to a plurality of limit springs, the bottom end of each group of limit springs is connected to a corresponding limit block, the sliding grooves in the frame are in sliding contact with the limit blocks, each of the limit blocks has a limit groove at its bottom end facing the vertical center axis of the frame, each limit block is rotatably connected to a projection piece through the limit groove, the edges of each projection piece are in movably contact, each projection piece cooperates with the corresponding limit groove, and the material of the projection piece is holographic glass.

[0007] By adopting the above technical solution, the limit blocks are lifted up in sequence to different distances, so that the slides are separated from each other, and then the slides are folded inward in sequence along the connection with the corresponding limit blocks in the opposite direction of the limit block lifting sequence, so as to reduce the volume of the device, and finally the device is put into the storage bag to complete the portable storage of the device. When it is needed, the slide is facing downward, and the slide is unfolded downward, and the limit blocks are pressed back in sequence according to the folding sequence of the slides, so that the edges of the slides are re-contacted, and the device is quickly unfolded.

[0008] The utility model is further configured such that the top surface inside each of the slide grooves is connected with a spring sheet corresponding to the limit block, each spring sheet in the slide groove does not interfere with the corresponding limit block, the bottom end of each spring sheet is connected with a clamping block, each limit block is provided with a clamping slot on the side away from the vertical center axis of the frame, each clamping block cooperates with the corresponding limit block through the corresponding clamping slot, and a gap is left between each clamping block and the slide groove on the side away from the vertical center axis of the frame.

[0009] By adopting the above technical solution, the spring sheet applies force to the card block toward the corresponding limit block, and the relative position between the limit block and the corresponding card block is determined by the limit groove. The gap between the card block and the card groove is to leave retreat space for the card block, ensuring that the card block can retreat when the limit block is pressed or lifted without affecting the movement of the limit block, and the card block can still keep the limit block stationary after the limit block stops moving.

[0010] In summary, the utility model mainly has the following beneficial effects:

[0011] The utility model sequentially lifts the limit blocks to different distances so that the slides are separated from each other, and then sequentially folds the slides inward along the connection with the corresponding limit blocks in the opposite direction according to the lifting sequence of the limit blocks, thereby reducing the volume of the device, and finally the device is stored in the storage bag to complete the portable storage of the device. When it is needed to be used, the slides are placed downward, and the slides are unfolded downward, and the limit blocks are sequentially pressed back according to the folding sequence of the slides, so that the edges of the slides are re-contacted, thereby completing the rapid unfolding of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the expanded structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the storage structure of the utility model;

[0014] Figure 3 It is a cross-sectional view of the overall structure of the utility model;

[0015] Figure 4 For the utility model Figure 3 A magnified view of the structure at center A;

[0016] Figure 5 For the utility model Figure 3 A magnified view of the structure at point B.

[0017] In the figure: 1, frame; 2, slide groove; 3, limit spring; 4, limit block; 5, slot; 6, block; 7, spring piece; 8, slide; 9, limit slot. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0019] The following describes an embodiment of the utility model based on its overall structure.

[0020] A portable holographic projection device, such as Figure 1-5As shown, it includes a frame 1, the bottom surfaces of the four frames of the frame 1 are all provided with slide grooves 2, and the interior of each group of slide grooves 2 is connected to a plurality of limit springs 3, and the bottom end of each group of limit springs 3 is connected to a corresponding limit block 4, the slide grooves 2 in the frame 1 are in sliding contact with the limit blocks 4, and each limit block 4 is provided with a limit groove 9 at the bottom end facing the vertical central axis of the frame 1, and each limit block 4 is rotatably connected to a slide 8 through the limit groove 9, and the edges of each slide 8 are in active contact, and each slide 8 is matched with the corresponding limit groove 9, and the slide The material of 8 is holographic glass. The limit blocks 4 are lifted up in sequence to different distances so that the slides 8 are separated from each other. Then, the slides 8 are folded inward in sequence along the connection with the corresponding limit blocks 4 in the reverse order of the limit blocks 4 being lifted up to reduce the volume of the device. Finally, the device is put into the storage bag to complete the portable storage of the device. When it needs to be used, the slide 8 is facing downward. At this time, the slide 8 is unfolded downward, and the limit blocks 4 are pressed back in sequence according to the folding order of the slide 8, so that the edges of the slides 8 are re-contacted to complete the rapid unfolding of the device.

[0021] The top surface of each slide groove 2 is connected with a spring piece 7 corresponding to the limit block 4. Each spring piece 7 in the slide groove 2 does not interfere with the corresponding limit block 4. The bottom end of each spring piece 7 is connected with a card block 6. A card slot 5 is opened on the side of each limit block 4 away from the vertical center axis of the frame 1. Each card block 6 cooperates with the corresponding limit block 4 through the corresponding card slot 5. A gap is left between each card block 6 and the slide groove 2 on the side away from the vertical center axis of the frame 1. The spring piece 7 applies a force toward the corresponding limit block 4 to the card block 6, and the relative position between the limit block 4 and the corresponding card block 6 is determined by the limit groove 9. The gap between the card block 6 and the card slot 5 is to leave space for the card block 6 to retreat, so as to ensure that the card block 6 can retreat when the limit block 4 is pressed or lifted, thereby not affecting the movement of the limit block 4, and the card block 6 can still keep the limit block 4 stationary after the limit block 4 stops moving.

[0022] Working principle: The spring piece 7 in the slide groove 2 on the bottom surface of the frame 1 applies a force to the card block 6 toward the corresponding limit block 4, and the relative position between the limit block 4 and the corresponding card block 6 is determined by the limit groove 9. The gap between the card block 6 and the card groove 5 is to leave space for the card block 6 to retreat, ensuring that the card block 6 can retreat when the limit block 4 is pressed or lifted, so as not to affect the movement of the limit block 4, and the card block 6 can still keep the limit block 4 stationary after the limit block 4 stops moving, wherein the limit spring 3 pulls the limit block 4 to prevent the limit block 4 from detaching from the frame The rack 1 is used, and the limit blocks 4 are lifted up in sequence to different distances, so that the slides 8 are separated from each other. Then, the slides 8 are folded inwards in sequence along the connection with the corresponding limit blocks 4 in the reverse order of the limit blocks 4 being lifted up, so as to reduce the volume of the device. Finally, the device is put into the storage bag to complete the portable storage of the device. When it is needed, the slides 8 are facing downwards. At this time, the slides 8 are unfolded downwards, and the limit blocks 4 are pressed back in sequence according to the folding order of the slides 8, so that the edges of the slides 8 are re-contacted, and the device is quickly unfolded.

[0023] On the basis of the above structure, in this embodiment, although the embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principle and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A portable holographic projection device, comprising a frame (1), characterized in that: The bottom surfaces of the four frames of the frame (1) are all provided with sliding grooves (2), and a plurality of limit springs (3) are connected inside each group of sliding grooves (2), and the bottom end of each group of limit springs (3) is connected to a corresponding limit block (4). The sliding grooves (2) in the frame (1) are in sliding contact with the limit blocks (4), and a limit groove (9) is provided at the bottom end of each limit block (4) facing the vertical center axis of the frame (1), and each limit block (4) is rotatably connected to a slide (8) through the limit groove (9).

2. A portable holographic projection device according to claim 1, characterized in that: The edges of each of the slide sheets (8) are in active contact with each other, and each of the slide sheets (8) is matched with a corresponding limiting groove (9).

3. A portable holographic projection device according to claim 2, characterized in that: The material of the slide film (8) is holographic glass.

4. A portable holographic projection device according to claim 1, characterized in that: The top surface of each slide groove (2) is connected to a spring sheet (7) corresponding to the limit block (4); each spring sheet (7) in the slide groove (2) does not interfere with the corresponding limit block (4); the bottom end of each spring sheet (7) is connected to a clamping block (6); a clamping slot (5) is provided on a side of each limit block (4) away from the vertical center axis of the frame (1); and each clamping block (6) cooperates with the corresponding limit block (4) through the corresponding clamping slot (5).

5. A portable holographic projection device according to claim 4, characterized in that: A gap is left between each of the clamping blocks (6) and the slide groove (2) on one side away from the vertical center axis of the frame (1).

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