JP4568643B2 - 3D image display device - Google Patents

Description

  The present invention relates to a three-dimensional image display device, and more particularly to a three-dimensional image display device that displays a three-dimensional image by moving a light emitting element by driving a drive mechanism.

In recent years, many techniques for displaying stereoscopic images have been proposed, and various techniques such as those using holography and those using parallax between human eyes have been proposed. Such a stereoscopic image display technique can be used for various purposes such as use as a display device for displaying an advertisement or the like. As a device for displaying a stereoscopic image, the display panel is arranged on a rotatable support member proposed by the present applicant, and the light emitting elements on the display panel are converted into a three-dimensional image at a predetermined position as the support member rotates. Some of them are made observable by lighting them in correspondence (for example, see Patent Document 1).
JP 2004-40667 A

  The three-dimensional image displayed on the three-dimensional image display apparatus proposed by the present applicant can be observed from more directions than a stereoscopic image displayed by another conventional method. For example, a viewer can observe a three-dimensional image from any direction outside the support member. However, in practical use, it is desired to enable more diverse video expressions, such as being able to display realistic 3D images.

  Accordingly, the present invention has been made in view of the above circumstances, and as one aspect for realizing a practical three-dimensional image display device, a three-dimensional image display device that enables various video expressions is provided. The purpose is to provide.

  In order to solve the above problems, a three-dimensional image display device according to an aspect of the present invention includes a driving mechanism, a light emitting display unit that includes a light emitting element and is moved by driving of the driving mechanism, and a projection surface on which light is projected. And a projection display unit that is disposed so that a light-emitting displayable area defined by the movement of the light-emitting display unit and the projection surface are observed to overlap each other when the projection surface is observed.

  According to this aspect, it is possible to observe a three-dimensional image in which the image displayed in the light emission display possible area and the image displayed on the projection surface are superimposed. By combining different image display methods in this way, more various video representations are possible. For example, it is possible to display a realistic 3D image. Provided.

  The light emitting display unit may be rotated around a predetermined rotation axis, and at least a part of the projection surface of the projection display unit may be disposed closer to the rotation axis than the light emitting display unit. In this way, the image can be displayed on the projection display unit provided on the inner side with respect to the rotation radius direction than the image displayed by the light emitting display unit. For example, the background of the image displayed on the light emitting display unit It is possible to display a realistic three-dimensional image such as displaying on the projection display unit.

  The light-emitting display unit includes a plurality of light-emitting elements having different distances from the rotation axis, and the projection display unit projects the background of the three-dimensional image displayed by the light-emitting display unit from a predetermined image projector. It may be displayed. In this way, since the background of the 3D image can be displayed by the projection display unit while the 3D image is displayed by the light emitting display unit, a 3D image that looks closer to the real world is displayed. Therefore, it becomes possible to observe a realistic three-dimensional image.

  The light emitting display unit may include a light emitting element support surface exposed around the light emitting element, and the reflection luminance of the projection surface of the projection display unit may be higher than the reflection luminance of the light emitting element support surface. In this way, when the light emitting element support surface passes the light beam directed to the projection surface by the rotation of the light emitting display unit, the light reflected by the projection surface is more light than the light reflected by the light emitting element support surface. Also become stronger. For this reason, the three-dimensional image in which the image displayed on the light emitting display unit and the image displayed on the projection display unit overlap can be observed more clearly.

  Moreover, you may further provide the image projector which projects an image on a projection surface. Also according to this aspect, it is possible to observe an image in which an image displayed in the light emission display possible region and an image projected on the projection surface overlap each other.

  The three-dimensional image display device according to the present invention includes a drive mechanism, a support member connected to the drive mechanism so as to be rotatable around a predetermined rotation axis, and the rotation axis together with the support member as the drive mechanism is driven. A light-emitting element array that includes a plurality of rotating light-emitting elements, demarcating a light-emitting displayable area by rotating the light-emitting elements, and a screen disposed in the vicinity of the rotation axis so as to be surrounded by the light-emitting displayable area; May be provided.

  According to this aspect, the image is displayed by the rotation of the light emitting element array in the light emitting display possible area surrounding the screen disposed in the vicinity of the rotation axis. At this time, the observer can see the screen behind the image displayed in the light emitting display possible region by the light emitting element array. Therefore, it is possible to express more various images by using the light emitting element array and the screen together.

  According to the present invention, it is possible to express various images such as displaying a realistic 3D image.

  Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating a state in which a 3D image is displayed on the 3D image display apparatus 100 according to the present embodiment. In order to facilitate understanding of the configuration and operation of the 3D image display apparatus 100 according to the present embodiment, first, a state during operation of the 3D image display apparatus 100 will be described with reference to FIG.

  The three-dimensional image display device 100 includes a base 2, a table 3, a screen 25, and an image projector 30. The disk-shaped table 3 is rotatably connected to the base 2. As will be described later with reference to FIG. 2, the table 3 is rotated in the rotation direction T about the central axis of the disk-shaped table 3 by the drive mechanism provided inside the base 2.

  The cylindrical screen 25 is fixed to the center of the upper surface of the table 3 so as to be coaxial with the rotation axis of the table 3. A projection surface 27 is formed on the cylindrical surface of the screen 25. As indicated by an arrow P, an image is projected from the image projector 30 toward the projection plane 27. The image projector 30 is disposed away from the screen 25 so that an image corresponding to the size of the projection surface 27 can be projected.

  On the upper surface of the table 3, a plurality of display boards 16 are fixed from the outside of the screen 25 to the outer periphery of the table 3 as described later with reference to FIGS. 2 and 3. A plurality of light emitting diode units 42 are fixed to each display panel 16. As the plurality of display boards 16 are rotated together with the table 3, a donut-shaped light emitting displayable area 35 is defined outside the screen 25 so as to surround the screen 25. Therefore, when the projection surface 27 is observed, the projection surface 27 and the light emission displayable region 35 are observed to overlap each other. In the figure, the light emission displayable area 35 is shown as an area surrounded by a one-dot chain line. Each display panel 16 is not shown in FIG. 1 because it rotates at high speed during the operation of the three-dimensional image display apparatus 100.

  In the light emitting display capable region 35, each of the plurality of light emitting diode units 42 blinks corresponding to the three-dimensional image to be displayed as the table 3 rotates. Then, a three-dimensional image can be observed in the light emission display possible region 35 by the afterimage effect. In the present embodiment, the background of the three-dimensional image displayed in the light emission displayable area 35 is projected from the image projector 30 onto the projection surface 27 of the screen 25.

  For example, as shown in FIG. 1, a three-dimensional image of the automobile 80 is displayed in the light emission displayable area 35, and still images such as mountains, blue sky, and sun as backgrounds are displayed on the screen 25. it can. Then, since the background is displayed, it is possible to observe a realistic three-dimensional image as compared to displaying only the automobile 80. Alternatively, the state where the fish is swimming is displayed as a three-dimensional moving image in the light emitting displayable area 35, and an underwater image as a background is displayed on the screen 25, and the fish swimming in the water is realistic three-dimensional. It can also be displayed as an image.

  Next, with reference to FIG. 2 and FIG. 3, the structure and effect | action of the three-dimensional image display apparatus 100 which concern on this embodiment are demonstrated in detail. FIG. 2 is a schematic cross-sectional view showing a cross section including the rotation axis of the 3D image display apparatus 100 according to the present embodiment. FIG. 3 is a plan view showing a planar arrangement of the display panel 16 in the present embodiment.

  The base 2 includes a disk-shaped top plate 21 and a bottom plate 22, and a cylindrical side plate 23 that fixes and connects the top plate 21 and the bottom plate 22 at their outer peripheral portions. A rotation transmission shaft 5 whose upper end is fixed to the center of the table 3 extends downward from the center of the table 3. The rotation transmission shaft 5 passes through the top plate 21 and extends downward into the base 2. The upper part of the rotation transmission shaft 5 is rotatably supported on the top plate 21 by a bearing 6 fixed to the top plate 21. A lower portion of the rotation transmission shaft 5 is rotatably supported on the bottom plate 22 by a bearing 6 fixed to the bottom plate 22.

  A gear 7 is coaxially coupled to the central portion of the rotation transmission shaft 5. A gear pinion 9 is meshed with the gear 7 so as to be able to transmit rotational motion. The motor 8 is fixed to the bottom plate 22. The motor pinion 9 is coaxially fixed to the output shaft of the motor 8 and is rotated by driving the motor 8. Further, the gear 7 is meshed with an encoder pinion 11 so as to be able to transmit rotational motion. The encoder pinion 11 is fixed coaxially so that the rotary motion can be transmitted to the rotary encoder 10 fixed to the bottom plate 22. In the present embodiment, the rotation transmission shaft 5, the gear 7, the bearing 6, the motor pinion 9, and the motor 8 constitute a drive mechanism that rotates the table 3.

  With this configuration, when the motor 8 is driven, the motor pinion 9 is rotated. The rotation of the motor pinion 9 is transmitted to the rotation transmission shaft 5 through the gear 7. The rotation transmission shaft 5 is rotatably supported by the base 2 and is fixed to the center of the table 3. Therefore, the rotation of the rotation transmission shaft 5 causes the table 3 to rotate in the rotation direction T shown in FIG. 3 with the rotation transmission shaft 5 as a rotation axis. The screen 25 and each display board 16 are rotated together with the table 3. The rotation angle of the table 3 is detected by the rotary encoder 10 through the gear 7 and the encoder pinion 11. The table 3 is rotated at, for example, 600 rpm.

  Now, a screen 25 and a plurality of display boards 16 are fixed on the table 3. The table 3 is a support member for the screen 25 and the display board 16. Each display panel 16 extends vertically upward from the upper surface of the table 3 in a direction parallel to the rotation axis of the table 3. On each display panel 16, a plurality of light emitting diode units 42 are arranged in a line in a direction parallel to the rotation axis of the table 3. Each display panel 16 has a length and a width such that a required number of light emitting diode units 42 can be arranged according to the specifications of the three-dimensional image display device 100. The surface of each display panel 16 on which the light emitting diode units 42 are arranged faces outward in the radial direction of the table 3.

  The surface exposed to the outside of each display panel 16 is black. This enhances the contrast between the light emitted from each light emitting diode unit 42 and the surface of each display panel 16 exposed to the outside around each light emitting diode unit 42, thereby facilitating observation of the displayed three-dimensional image. Because. Further, when each display board 16 passes an image projected from the direction P toward the screen 25 by the image projector 30 by rotation of the table, an image projected on the surface of each display board 16 is not conspicuous. It is also to do.

  Each of the plurality of light emitting diode units 42 includes a red light emitting diode, a green light emitting diode, and a blue light emitting diode, and can emit light of any color by appropriately emitting the three primary colors of red, green, and blue. It is comprised so that it may become.

  As shown in FIG. 3, a first display panel group 51 and a second display panel group 52 including a plurality of display panels 16 are arranged on the table 3. In the first display panel group 51, the display panel closest to the rotation axis (hereinafter referred to as “first innermost display panel”. The same applies to other display panel groups) 61 from the rotation axis. The distance from the rotation axis is increased every time the angle is increased by a certain amount in order to a separated display panel (hereinafter referred to as “first outermost display panel”. The same applies to other display panel groups) 71. The display panels 16 are arranged in a spiral and are fixed on the table 3 so as to increase by a certain amount and approach the outer peripheral portion. For example, the angle increases by 8 degrees, and the distance from the center of rotation increases by 7 mm. Each display panel 16 of the second display panel group 52 is also fixed on the table 3 like the first display panel group 51.

  The first innermost display board 61 and the second innermost display board 62 are both equal in distance from the rotation axis of the table 3 and are provided symmetrically with respect to the rotation axis at an angular interval of 180 degrees. Similarly, the first outermost display panel 71 and the second outermost display panel 72 are also provided symmetrically with respect to the rotation axis. Similarly, each of the other display panels 16 has a display panel 16 provided symmetrically with respect to the rotation axis. That is, the first display panel group 51 and the second display panel group 52 are arranged symmetrically with respect to the rotation axis.

  When each display board 16 is rotated together with the table 3 along with the rotation of the motor 8, the height of each display board 16, the rotation radius of the first innermost display board 61 and the second innermost display board 62, and the first A donut-shaped region defined by the rotation radii of the outermost display panel 71 and the second outermost display panel 72 becomes a light emitting display capable region 35 in which a three-dimensional image can be displayed by the blinking of each light emitting diode unit 42.

  The screen 25 is formed in a cylindrical shape, and is fixed on the table 3 with its central axis coinciding with the rotation axis of the table 3. A projection surface 27 for displaying an image projected from the image projector 30 is formed on the surface of the screen 25 facing outward in the radial direction. The screen 25 is disposed so that the projection surface 27 is closer to the rotation axis of the table 3 than the first innermost display plate 61 and the second innermost display plate 62. When the projection surface 27 is observed, the projection surface 27 and the light emission displayable area 35 are observed to overlap each other.

  Note that the reflection luminance of the projection surface 27 is higher than the reflection luminance of the surface exposed to the outside of each display panel 16 so that the image projected from the image projector 30 can be clearly displayed. Material and color are selected. Here, the reflection luminance means the luminance of light reflected when light is projected perpendicularly onto the projection surface 27.

  As shown in FIG. 2, a control device 17 including a microcomputer for controlling each light emitting diode unit 42 and its peripheral elements is further provided on the table 3. A rotary connector 18 for supplying power to the control device 17 and signals from the rotary encoder 10 is provided at the center of the table 3.

  The rotary connector 18 includes a rotating part 48 and a fixed part 49. A power supply cable connected to each display board 16 and the control device 17 from a power source (not shown) is connected to the fixing portion 49 of the rotary connector 18 through a cable introduction portion 50 provided inside the hollow rotation transmission shaft 5. Connected. The fixed portion 49 and the rotating portion 48 of the rotary connector 18 are connected to each other so as to be rotatable around a predetermined axis while being electrically connected. The rotary part 48 of the rotary connector 18 and each display board 16 are connected by a cable (not shown). The fixing portion 49 is fixed to the cable introducing portion 50 so that the rotating portion 48 is disposed coaxially with the rotation transmission shaft 5.

  For this reason, even if the table 3 rotates, the fixing | fixed part 49 fixed to the cable introduction part 50 does not rotate. On the other hand, the rotation unit 48 is connected to each display board 16 and the like fixed to the table 3 with a cable, and thus rotates with the rotation of the table 3. Since the rotating portion 48 and the fixed portion 49 are electrically connected, power can be supplied to each display panel 16 and the like even while the table 3 is rotating.

  With this configuration, while the table 3 is rotated by the drive mechanism including the motor 8 or the like, the control device 17 can control each display board 16 based on the rotation angle of the table 3 detected by the rotary encoder 10. A control signal is transmitted to each light emitting diode unit 42 so that each of the upper light emitting diode units 42 is turned on or off in correspondence with the three-dimensional image to be displayed. As a result, a three-dimensional image that can be observed from any direction outside the three-dimensional image display device 100 is displayed in the light-emitting displayable area 35 on the table 3. At the same time, an image serving as the background of the three-dimensional image displayed in the light emission displayable area 35 is projected from the image projector 30 toward the projection surface 27 of the screen 25.

  In the present embodiment, since the table 3 is rotated at a high speed, each display board 16 is difficult to visually recognize. Therefore, the three-dimensional image displayed on the light emission display possible area 35 by each display board 16 is the light emission display possible area 35. It seems to be floating in the space inside. Therefore, if the cylindrical screen 25 is not provided, an object that exists beyond the 3D image display device 100 in the viewing direction and has nothing to do with the 3D image may enter the field of view. .

  However, in this embodiment, when observing a three-dimensional image displayed in front of the screen 25 in the line-of-sight direction, an irrelevant object that exists beyond the three-dimensional image display device 100 may enter the field of view. It is suppressed by the screen 25. This is because the projection surface 27 is arranged so as to be observed while overlapping the light emission display possible region 35. Therefore, when observing the displayed three-dimensional image, irrelevant objects are less likely to enter the field of view, so that the observer can observe the three-dimensional image with a greater sense of reality. Then, by projecting the background of the three-dimensional image displayed in the light emitting displayable area 35 onto the projection plane 27, the observer can observe an image with a more realistic feeling.

  In the present embodiment, a three-dimensional moving image is displayed in the light emission display possible area 35, and a still image as a background is displayed on the projection plane 27. At this time, since the image is displayed in the light emission displayable area 35 using the afterimage effect, the light emission displayable area 35 tends to display a moving image more easily than a still image. On the other hand, the image displayed on the projection surface 27 can also display a clear still image by appropriately selecting the image projector 30. As described above, in the present embodiment, by using both the display by light emission and the display by projection, a three-dimensional image combining a still image and a moving image can be displayed easily.

  Further, since the projection surface 27 is a cylindrical surface that rotates coaxially with the table 3, the projection surface 27 is continuous over the entire circumference in the rotation direction of the table 3, and the image projector 30 and the table 3 are rotated during the rotation of the table 3. The distance from the projection surface 27 is constant. Therefore, the image is clearly displayed on the projection surface 27 as if the image is projected on the stationary projection surface 27.

  Next, a first modification of the present embodiment will be described with reference to FIG. FIG. 4 is a schematic cross-sectional view showing a cross section including the rotation axis of the three-dimensional image display apparatus 100 according to the first modification of the present embodiment. In this modification, a cylindrical display plate 26 fixed to the ceiling cover 37 is used instead of the screen 25 and the image projector 30. The description of the same parts as those of the present embodiment described above will be omitted as appropriate.

  The three-dimensional image display device 100 in this modification includes a ceiling cover 37 and side covers 38 fixed on the base 2, and a cylindrical display board 26 fixed on the ceiling cover 37. The ceiling cover 37 is formed in a disk shape having the same size as the top plate 21 of the base 2. The side cover 38 is formed in a cylindrical shape coaxial with the rotation transmission shaft 5. The radius of the columnar space inside the side cover 38 is slightly longer than the radius of the table 3 so as not to prevent the rotation of the table 3. The lower end of the side cover 38 is fixed to the outer peripheral part of the upper surface of the top plate 21 of the base 2, and the upper end of the side cover 38 is fixed to the outer peripheral part of the lower surface of the ceiling cover 37. The ceiling cover 37 and the side cover 38 are formed of a transparent material such as glass or acrylic resin so that the displayed three-dimensional image can be observed.

  A cylindrical display plate 26 is fixed to the center of the lower surface of the ceiling cover 37. The cylindrical display board 26 is formed in a cylindrical shape coaxial with the rotation axis of the table 3. The cylindrical display panel 26 is disposed closer to the rotation axis of the table 3 than the first innermost display panel 61 and the second innermost display panel 62.

  The cylindrical display board 26 extends downward from the center of the lower surface of the ceiling cover 37 toward the table 3. The lengths of the cylindrical display plate 26 and the display plates 16 in the rotation axis direction are substantially equal. The lower end of the cylindrical display plate 26 and the table 3 are not in contact with each other and the upper end of each display plate 16 and the ceiling cover 37 are not in contact so as not to prevent the rotation of the table 3 and each display plate 16.

  A plurality of light emitting diode units 42 are fixed to the surface of the cylindrical display panel 26 facing outward in the radial direction. The plurality of light emitting diode units 42 are arranged in a line parallel to the rotation axis of the table 3 from the upper end to the lower end of the cylindrical display panel 26. Further, the light emitting diode units 42 arranged in this line are arranged on the entire cylindrical surface. It is arranged over the circumference. Therefore, when the surface of the cylindrical display board 26 is observed from the outside of the ceiling cover 37 and the side cover 38, the light emission displayable area 35 and the image displayable area of the cylindrical display board 26 are observed overlapping each other.

  With this configuration, a three-dimensional image is displayed when the control device 17 blinks the light emitting diode units 42 provided on the display plates 16 and the cylindrical display plate 26 while the table 3 is rotating. At this time, the background of the three-dimensional image displayed on each display board 16 can be displayed on the cylindrical display board 26.

  In the present modification, the cylindrical display board 26 is disposed closer to the rotation axis than the display boards 16, so that the cylindrical display board 26 does not block the light emitted from the other display boards 16. . Therefore, since the light emitting diode units 42 can be densely arranged over the entire surface of the cylindrical display plate 26, the cylindrical display plate 26 clearly displays the background of the three-dimensional image displayed by each display plate 16. Can be displayed.

  When the image projector 30 and the screen 25 are used, an image is displayed only in an area on the screen 25 where the light from the image projector 30 is projected. In this modification, the surface of the cylindrical display plate 26 is displayed. Since the light emitting diode units 42 can be arranged over the entire area, an image can be displayed over the entire surface of the cylindrical display panel 26. Of course, for example, when the displayed image is observed from a specific direction, the light emitting diode unit may be provided only on a part of the surface corresponding to the specific direction.

  In addition, since the cylindrical display plate 26 is fixed to the ceiling cover 37 and does not rotate, the load on the motor 8 is smaller than when the screen 25 is fixed to the table 3. Furthermore, since it is not necessary to install the image projector 30, the three-dimensional image display device can be downsized and the cost can be reduced.

  Next, a second modification of the present embodiment will be described with reference to FIG. FIG. 5 is a schematic diagram showing a state in which a 3D image is displayed on the 3D image display apparatus 100 according to the second modification of the present embodiment. In the second modification, a ceiling cover 37 and a side cover 38 are provided as in the first modification, and the screen 25 is fixed to the ceiling cover 37. In FIG. 5, the ceiling cover 37 and the side cover 38 are not shown for easy understanding. In addition, description is abbreviate | omitted suitably about the location similar to this embodiment demonstrated previously.

  In the second modification, the screen 25 is formed in a flat plate shape. The upper end of the screen 25 is fixed to the center portion of the lower surface of the ceiling cover 37. The screen 25 extends from the center of the ceiling cover 37 toward the center of the upper surface of the table 3. A gap is provided between the lower end of the screen 25 and the upper surface of the table 3 so as not to prevent the rotation of the table 3, and the screen 25 and the table 3 are not in contact with each other.

  Further, the screen 25 is located on the inner side of the first innermost display panel 61 and the second innermost display panel 62 in the rotational radius direction so as not to hinder the rotation of the first innermost display panel 61 and the second innermost display panel 62. Provided. The rotary connector 18 may be fixed to the upper surface of the table 3, but may be provided, for example, on the lower end side of the rotation transmission shaft 5 when it is desired to increase the length of the screen 25 in the rotation axis direction.

  A projection surface 27 is formed on one surface of the screen 25. Since the screen 25 is surrounded by the light emission displayable area 35, the projection surface 27 and the donut-shaped light emission displayable area 35 are observed to overlap each other. An image as a background of the displayed three-dimensional image is projected from the image projector 30 onto the projection plane 27. Note that the projection surfaces 27 may be formed on both surfaces of the screen 25 and images may be projected onto the respective projection surfaces.

  Since the screen 25 is fixed to the ceiling cover 37 and is not in contact with the table 3, the screen 25 does not rotate even if the table 3 rotates. Therefore, the background can be clearly displayed on the projection surface 27. When the screen 25 is cylindrical, the projected image is curved. However, in the present modification, the screen 25 is a flat plate, which is preferable in that the projected image is not curved.

  The present invention is not limited to the above-described embodiments, and an appropriate combination of the elements of each embodiment is also effective as an embodiment of the present invention. Various modifications such as design changes can be added to each embodiment based on the knowledge of those skilled in the art, and embodiments to which such modifications are added can also be included in the scope of the present invention. Here are some examples.

  In the present embodiment, a light emitting diode (LED) is used as a light emitting element. However, the present invention is not limited to this. For example, light may be emitted as a pixel for displaying an image, such as a display using an organic EL or liquid crystal. Anything is possible. In the present embodiment, light of a desired color can be emitted by light emission of the three primary colors. However, the present invention is not limited to this, and may be, for example, monochromatic light emission.

  Further, in the present embodiment, the projection surface 27 as the projection surface is provided closer to the rotation axis than the light emission display possible region 35 defined by the rotation of each display plate 16 as the light emission display unit. Not limited to this. The projection display part should just be provided so that the light emission display possible area | region 35 and a projection surface may overlap and be observed when a projection surface is observed.

  For example, the projection surface may be provided so as to be included in the light emitting display capable region 35. As an example, a projection surface may be formed on a surface exposed to the outside in a light emitting display unit such as a surface facing the outer side in the rotational radius direction of each display panel 16.

  Further, the projection display unit may be provided farther from the rotation axis than the light emitting display unit. For example, the projection display unit may be provided so as to surround the light-emitting display unit so that the light-emitting displayable region and the projection surface overlap each other when the projection display unit is observed from the vicinity of the rotation axis.

  Or you may form a projection surface in the surface of support members, such as the table 3, which supports a light emission display part.

  In the present embodiment, the projection surface 27 has a circular cross section when viewed from the rotation axis direction, but is not limited thereto. For example, it may be a straight line, a polygon such as a rhombus, or a curve such as an ellipse, and can be selected as appropriate. In addition, it is preferable that the projection surface be provided continuously over the entire circumference in the rotation direction because light can be projected from an arbitrary direction even when the projection surface does not rotate with the light emitting display unit. When the projection surface rotates together with the light emitting display unit, the projection surface faces an arbitrary direction with a predetermined frequency as it rotates, so the projection surface has a discontinuous shape that is not provided over the entire circumference of the rotation direction. May be.

  When displaying the background on the projection display unit, it is not necessary that the entire projection surface is provided closer to the rotation axis than the light emission display unit, and at least a part of the projection surface is a rotation axis than the light emission display unit. As long as it is provided close to. In this case, it is preferable to display an image corresponding to the background on a part of the projection surface provided closer to the rotation axis than the light emitting display unit.

  In the present embodiment, the image projector 30 projects an image from the outside of the screen 25 toward the projection surface 27, but the image projector 30 is provided inside the screen 25 and is projected on the inner surface of the screen 25. And an image may be projected. In this case, it is preferable to use a so-called rear type screen so that the image projected inside the screen 25 can be observed from the outside.

  When a cover such as the ceiling cover 37 and the side cover 38 is provided as in the modification of the present embodiment, when an image is projected from the outside of the cover, for example, an antireflection film is formed on the surface of the cover. Antireflection treatment is preferably performed.

  In the present embodiment, one image projector 30 is provided, but a plurality of image projectors 30 may be provided so that an image is displayed on the entire circumference of the projection display unit with respect to the rotation direction of the light emitting display unit.

  In the present embodiment, the projection surface 27 of the cylindrical screen 25 is used as the projection surface, and an image is projected from the image projector 30 onto the projection surface 27. However, the present invention is not limited to this. For example, a display unit such as a screen on which a specific image desired to be displayed is drawn in advance can be employed without using the image projector 30. In this case, by using a screen in which light can be transmitted from one surface of the display unit to the other surface, and one surface is formed as a projection surface, and a backlight projector that projects light onto the projection surface. Also good. If it does in this way, the visibility of the image drawn on the screen can be improved by projecting light from the backlight projector.

  Further, in the present embodiment, each display plate 16 as the light emitting display unit is rotated by a driving mechanism so as to demarcate the light emitting display possible region 35, but the present invention is not limited to this and is driven. Any device may be used as long as it can be moved by driving the mechanism to define the light-emitting displayable area. For example, the light emitting display portion may be configured to demarcate the light emitting display capable region 35 by being reciprocated, such as in a racetrack shape, or the light emitting display portion can be light emitting displayed by reciprocating. The region 35 may be defined.

It is a schematic diagram which shows the state which displayed the three-dimensional image on the three-dimensional image display apparatus which concerns on this embodiment. It is a schematic sectional drawing which shows the cross section containing the rotating shaft of the three-dimensional image display apparatus which concerns on this embodiment. It is a top view which shows the plane arrangement | positioning of the display board in this embodiment. It is a schematic sectional drawing which shows the cross section containing the rotating shaft of the three-dimensional image display apparatus which concerns on the 1st modification of this embodiment. It is a schematic diagram which shows the state which displayed the three-dimensional image on the three-dimensional image display apparatus which concerns on the 2nd modification of this embodiment.

Explanation of symbols

  2 base, 3 table, 8 motor, 16 display board, 17 control device, 25 screen, 26 cylindrical display board, 27 projection surface, 30 image projector, 35 light emitting display possible area, 42 light emitting diode unit, 100 3D image display apparatus.

Claims (5)

A drive mechanism;
A light-emitting display unit that includes a light-emitting element and is rotated around a rotation axis by driving of the drive mechanism;
A projection display unit for displaying a background of a three-dimensional image displayed by the light-emitting display unit, the projection display unit including a projection surface on which light is projected, and defined by a rotational movement of the light-emitting display unit wherein the projection surface is observed to overlap when viewed in front Symbol projection surface, wherein the projection surface is surrounded by the light emitting display area surrounding said rotary shaft, shielding the view behind the light-emitting display area and A projection display unit arranged to be
A three-dimensional image display device comprising: The light emitting display unit includes a light emitting element support surface exposed around the light emitting element,
The three-dimensional image display device according to claim 1, wherein the reflection luminance of the projection surface of the projection display unit is higher than the reflection luminance of the light emitting element support surface. Three-dimensional image display apparatus according to claim 1 or 2, further comprising an image projector for projecting an image on the projection surface. A drive mechanism;
A support member coupled to the drive mechanism so as to be rotatable about a predetermined rotation axis;
A plurality of light emitting elements that rotate around the rotation axis together with the support member in accordance with driving of the drive mechanism, and a light emitting element array that demarcates a light emitting display possible region by rotation of the plurality of light emitting elements;
The light emitting display area displaying a background of the three-dimensional image displayed on and is provided to block the view behind the light-emitting display region, the light emitting display area is surrounded by surrounding the pre-Symbol rotation axis And a screen to
A three-dimensional image display device comprising: 5. The tertiary according to claim 4 , further comprising a plurality of the light emitting element arrays disposed at positions different from each other in a radiation direction from the rotation axis, and an image projector that projects an image on the screen. Original image display device.

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