CN211979351U

CN211979351U - Three-dimensional display device with simple body

Info

Publication number: CN211979351U
Application number: CN202020612728.0U
Authority: CN
Inventors: 张枫
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-11-20
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a simple three-dimensional display device, which comprises a rotating mechanism, a projection screen and projection equipment; the projection screen rotates around a vertical axis under the driving of the rotating mechanism; rotating arms are respectively arranged on two sides of the projection screen, and the rotating arms and the projection screen synchronously rotate under the driving of the rotating mechanism; the two rotating arms are provided with the projection devices, and the two projection devices are symmetrically arranged on two sides of the projection screen to project two-dimensional images onto the projection screen respectively. The three-dimensional display device has simple structure, low cost and easy popularization; the quality of the volume three-dimensional image is better than that of a display device of a conventional four-side spectroscope, and the volume three-dimensional image with higher quality formed by two-dimensional images of a plurality of angles can be displayed.

Description

Three-dimensional display device with simple body

Technical Field

The utility model relates to a body three-dimensional display technical field especially relates to a simple and easy body three-dimensional display device.

Background

Volumetric three-dimensional stereoscopic display is a stereoscopic display technique based on which a three-dimensional image having a physical depth of field can be directly observed. The currently common volumetric three-dimensional displays are mostly used for displaying showcases. The stereo display system is generally a quadrangular pyramid formed by four static special spectroscopes, each spectroscope faces a display device, each display device outputs each picture information of an object to be displayed respectively and transmits the picture information to the corresponding spectroscope, the spectroscope reflects the light of each spectroscope back to human eyes, and the picture is synthesized to form a suspended stereo display. The display device is a projector for projecting and displaying a picture onto the corresponding beam splitter.

Since the three-dimensional image actually seen by the human eye at the beam splitter is actually a two-dimensional image displayed by the display device, when the human looks around the three-dimensional image, only four-angle pictures corresponding to the four beam splitters can be actually seen; when the display is used for product display, more details of the product cannot be observed, so the display still has poor effect in practical exhibition application. A volumetric three-dimensional display apparatus of publication No. CN110364096A provides an apparatus and an imaging method that can display a fine volumetric three-dimensional image, however, the apparatus is relatively complicated in structure.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a simple and easy body three-dimensional display device can solve the more complicated and inconvenient problem of building of current body three-dimensional display device structure.

The technical scheme of the utility model is realized like this:

a simple three-dimensional display device comprises a rotating mechanism, a projection screen and a projection device; the projection screen rotates around a vertical axis under the driving of the rotating mechanism; rotating arms are respectively arranged on two sides of the projection screen, and the rotating arms and the projection screen synchronously rotate under the driving of the rotating mechanism; the two rotating arms are provided with the projection devices, and the two projection devices are symmetrically arranged on two sides of the projection screen to project two-dimensional images onto the projection screen in a direct projection or reflection mode respectively.

As a further alternative of the simple three-dimensional display device, the two projection apparatuses are disposed on both sides of the projection screen and directly project two-dimensional images onto the projection screen.

As a further alternative of the simple three-dimensional display device, the two projection apparatuses are disposed on both sides of the projection screen and project a two-dimensional image onto the projection screen through a mirror.

As a further alternative of the simple three-dimensional display device, two reflectors are provided, and are respectively disposed on the rotating arm, and the reflectors rotate synchronously with the projection apparatus.

As a further alternative of the simplified three-dimensional display device, the reflector is an annular reflector, the annular reflector takes the vertical axis as a center, and the fixing ring is arranged outside the projection screen.

As a further alternative of the simple three-dimensional display device, the rotating mechanism includes a base, a rotating spindle, and a motor; the rotating main shaft is arranged on the base, and the motor is in driving connection with the rotating main shaft; the projection screen is arranged on the rotating main shaft, and the two rotating arms are arranged on two sides of the rotating main shaft.

As a further alternative of the simple three-dimensional display device, a conductive slip ring is arranged on the rotating main shaft, and the two projection devices are connected through the conductive slip ring.

As a further alternative of the simplified three-dimensional display device, the base is hollow, a part of the rotating spindle is inserted into the base, and the motor is disposed in the base.

As a further alternative of the simple three-dimensional display device, the rotating arm is foldable or telescopic.

The beneficial effects of the utility model are that: the three-dimensional display device has simple structure, low cost and easy popularization; the quality of the volume three-dimensional image is better than that of a display device of a conventional four-side spectroscope, and the volume three-dimensional image with higher quality formed by two-dimensional images of a plurality of angles can be displayed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a simplified three-dimensional display device according to a first embodiment;

fig. 2 is a schematic structural diagram of a simplified three-dimensional display device according to a first embodiment;

fig. 3 is a schematic structural diagram of a simplified three-dimensional display device according to a second embodiment;

FIG. 4 is a schematic top view of a simplified three-dimensional display device according to a second embodiment;

FIG. 5 is a schematic structural diagram of a simplified three-dimensional display device according to a third embodiment;

fig. 6 is a schematic top view of a simplified three-dimensional display device according to a third embodiment.

In the figure: 1. a rotation mechanism; 11. a base; 12. rotating the main shaft; 13. a conductive slip ring; 2. a projection screen; 3. a projection device; 4. a rotating arm; 5. a mirror.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example one

Referring to fig. 1-2, a simplified volumetric three-dimensional display device is shown comprising a rotary mechanism 1, a projection screen 2 and a projection apparatus 3; the projection screen 2 rotates around a vertical axis under the driving of the rotating mechanism 1; rotating arms 4 are respectively arranged on two sides of the projection screen 2, and the rotating arms 4 are driven by the rotating mechanism 1 to rotate synchronously with the projection screen 2; the two rotating arms 4 are respectively provided with the projection equipment 3, and the two projection equipment 3 are symmetrically arranged on two sides of the projection screen 2 to respectively project two-dimensional images onto the projection screen 2.

Specifically, in practical applications, the two projection devices 3 and the projection screen 2 rotate synchronously, and during the rotation, the projection devices 3 project two-dimensional images onto the projection screen 2; the projection device 3 projects different two-dimensional images at different positions after rotating, wherein the two-dimensional images are images displayed by the three-dimensional image of the body at different angles; for example, the three-dimensional image of the body formed by the projection screen 2 can have pictures at thirty-six angles, that is, when a person walks a circle around the three-dimensional image of the body, the two-dimensional images at thirty-six different angles can be seen; this represents the need to project thirty-six different two-dimensional images during one revolution of each projection device 3.

In addition, in order to satisfy the persistence of vision and the fusion of vision of human eyes, when human eyes look at the projection screen 2 in one direction, the projection screen 2 should have at least twenty-four times of the same two-dimensional image in the direction within one second; in other words, the two projection devices 3 should be present twenty-four times in this direction, twelve times per projection device 3, so that the rotation mechanism 1 should rotate the projection screen 2 at least twelve revolutions per second. For the imaging principle of the volumetric three-dimensional image, a volumetric three-dimensional display device disclosed in publication No. CN110364096A may be referred to. The projection device 3 is a device capable of generating a projection image, having a light source, and having a projection lens. The swivel arm 4 is preferably perpendicular to the projection screen 2.

In the above solution, referring to fig. 2, the rotating mechanism 1 includes a base 11, a rotating spindle 12 and a motor; the rotating main shaft 12 is vertically arranged on the base 11, and the motor is in driving connection with the rotating main shaft 12; the projection screen 2 is arranged on the rotating main shaft 12, and the two rotating arms 4 are arranged on two sides of the rotating main shaft 12. In addition, in order to conveniently transmit the required electricity, signals, data and the like for the projection device 3, a conductive slip ring 13 is arranged on the rotating main shaft 12, and the two projection devices 3 are connected through the conductive slip ring 13.

In the above solution, in order to make the three-dimensional display device more compact, the base 11 is hollow, a part of the rotating spindle 12 is inserted into the base 11, and the motor is disposed in the base 11. In order to facilitate carrying the three-dimensional display device, the rotating arm 4 is foldable or retractable, and the bottom of the base 11 can be provided with moving wheels.

Example two

The principle of the second embodiment can be referred to the first embodiment, except that, referring to fig. 3 and 4, the two projection devices 3 are arranged on both sides of the projection screen 2 and project two-dimensional images onto the projection screen 2 through the reflecting mirror 5; the number of the reflecting mirrors 5 is two, the two reflecting mirrors are respectively arranged on the rotating arm 4, and the reflecting mirrors 5 and the projection equipment 3 synchronously rotate.

EXAMPLE III

The principle of the third embodiment can be referred to the first embodiment, except that, referring to fig. 5 and fig. 6, the two projection devices 3 are disposed on both sides of the projection screen 2 and project two-dimensional images onto the projection screen 2 through the reflecting mirror 5; the reflector 5 is an annular reflector, the annular reflector takes the vertical axis as a center, and a fixing ring is arranged outside the projection screen 2. The annular reflector can be formed by annularly arranging a plurality of planar reflectors; each mirror corresponds to an imaging angle of the three-dimensional image of the volume. The annular reflector can also be integrally formed.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A simple three-dimensional display device is characterized by comprising a rotating mechanism, a projection screen and projection equipment; the projection screen rotates around a vertical axis under the driving of the rotating mechanism; rotating arms are respectively arranged on two sides of the projection screen, and the rotating arms and the projection screen synchronously rotate under the driving of the rotating mechanism; the two rotating arms are provided with the projection devices, and the two projection devices are symmetrically arranged on two sides of the projection screen to project two-dimensional images onto the projection screen in a direct projection or reflection mode respectively.

2. The simplified three-dimensional display apparatus as claimed in claim 1, wherein the two projection devices are disposed on two sides of the projection screen and directly project two-dimensional images onto the projection screen.

3. The simplified three-dimensional display apparatus as claimed in claim 1, wherein the two projection devices are disposed on two sides of the projection screen and project two-dimensional images onto the projection screen through the reflective mirror.

4. A simplified three-dimensional display apparatus according to claim 3 and further comprising two reflecting mirrors, each reflecting mirror being mounted on the rotary arm, the reflecting mirrors rotating synchronously with the projection device.

5. The device of claim 3, wherein the reflector is a ring reflector centered on the vertical axis, and the fastening ring is disposed outside the projection screen.

6. The simplified three-dimensional display device according to claim 1, wherein the rotation mechanism comprises a base, a rotation spindle and a motor; the rotating main shaft is vertically arranged on the base, and the motor is connected with the rotating main shaft in a driving way; the projection screen is arranged on the rotating main shaft, and the two rotating arms are arranged on two sides of the rotating main shaft.

7. The simplified three-dimensional display apparatus as claimed in claim 6, wherein the rotating shaft is provided with a conductive slip ring, and the two projection devices are connected through the conductive slip ring.

8. The simplified three-dimensional display device according to claim 7, wherein the base is hollow, a portion of the rotating shaft is inserted into the base, and the motor is disposed in the base.

9. The simplified volumetric three-dimensional display apparatus as defined in claim 1 wherein the rotating arm is foldable or retractable.