JP7268405B2 - 3D image display device and floating display - Google Patents

Description

TECHNICAL FIELD The present invention relates to a floating-in-air display, and more particularly to a floating-in-air display comprising a stereoscopic image display device and a mirror device.

Conventionally, there has been proposed a reflector array (mirror device) including a plurality of unit optical elements each having two reflecting surfaces arranged in an upright posture (see, for example, Patent Document 1). According to this mirror device, a real image of an object can be projected at a plane-symmetrical position with respect to the mirror device.

For example, by combining a flat display having a backlight as a light source and the mirror device, an image displayed on the flat display can be formed at a predetermined position.

Publication No. 2001-56474

However, an image displayed on a flat panel display using a backlight as a light source is displayed by light emitted from the backlight passing through a liquid crystal layer, an optical sheet, or the like, and the brightness of the displayed image may vary. There were limits. When a flat display and a mirror device are combined, the user sees an image formed by the light emitted from the flat display and reflected by the mirror device, making it difficult to display a bright image. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to realize a stereoscopic image display device and a floating display that display a bright stereoscopic image.

A stereoscopic image display device according to a first aspect includes a transparent member, a group of light emitting elements arranged on the transparent member, a plurality of rotating bodies rotatable about a common rotating shaft, and an image signal supplied from the outside. parallel/serial conversion circuits for converting the order of data arrangement from parallel to serial; a plurality of fixed terminals supplied with image signal data output from the parallel/serial conversion circuits; and a rotary terminal that is sequentially electrically connected to the plurality of fixed terminals by the rotation of the rotary body; and a serial/parallel conversion circuit for outputting to the light emitting element group.

A stereoscopic image display device according to a second aspect is the stereoscopic image display device according to the first aspect, wherein the light emitting element groups of the plurality of rotating bodies are arranged on mutually different planes including the rotation axis.
A stereoscopic image display device according to a third aspect is the stereoscopic image display device according to the first or second aspect, wherein the transparent member has a shape in which circles centered on the rotation axis are stacked.

A stereoscopic image display device according to a fourth aspect is the stereoscopic image display device according to the third aspect, wherein the transparent member has a substantially V-shaped cross section including the rotation axis, and the plurality of transparent members are arranged in a radial direction of the circle. are arranged so as to overlap each other.
A stereoscopic image display device according to a fifth aspect is the stereoscopic image display device according to the third aspect, wherein the transparent member has a cylindrical shape, and a plurality of the transparent members are arranged so as to overlap in the radial direction of the circle.

A stereoscopic image display device according to a sixth aspect is the stereoscopic image display device according to the third aspect, wherein each of the plurality of rotating bodies is aligned with the rotating shaft in a cross section including the rotating shaft on the rotating body. A plurality of light emitting element groups arranged symmetrically are provided.

A floating-in-air display according to a seventh aspect comprises a three-dimensional image display device according to any one of the first to sixth aspects, two reflecting surfaces arranged orthogonal to each other, and light emitted from the three-dimensional image display device. a mirror device in which unit optical elements are arranged in a matrix and have an entrance for incidence; .

According to the present invention, it is possible to realize a stereoscopic image display device and a floating display that display a bright stereoscopic image.

FIG. 1 is a diagram schematically showing one configuration example of a stereoscopic image display device according to a first embodiment. FIG. 2 is a diagram schematically showing one configuration example of a drive circuit that drives the stereoscopic image display device of the first embodiment. FIG. 3 is a diagram schematically showing the configuration of a unit light-emitting element including a red element, a green element, and a blue element in each light-emitting element group of the stereoscopic image display device of the first embodiment. FIG. 4 is a diagram schematically showing an example of an image that can be displayed by the stereoscopic image display device of the first embodiment; 5A is a diagram for explaining an example of image signal data supplied to the first rotator when displaying the image shown in FIG. 4. FIG. 5B is a diagram for explaining an example of image signal data supplied to the first rotator when displaying the image shown in FIG. 4; FIG. 6A is a diagram for explaining an example of image signal data supplied to the second rotator when displaying the image shown in FIG. 4. FIG. 6B is a diagram for explaining an example of image signal data supplied to the second rotator when displaying the image shown in FIG. 4; FIG. 7A is a diagram for explaining an example of image signal data supplied to the third rotor when displaying the image shown in FIG. 4. FIG. 7B is a diagram for explaining an example of image signal data supplied to the third rotator when displaying the image shown in FIG. 4; FIG. FIG. 8 is a diagram schematically showing one configuration example of the floating display of the first embodiment. FIG. 9 is a diagram schematically showing one configuration example of the stereoscopic image display device of the second embodiment.

Hereinafter, embodiments will be described with reference to the drawings. However, it should be noted that the drawings are schematic or conceptual, and the dimensions, proportions, etc. of each drawing are not necessarily the same as the actual ones. Also, even when the same parts are shown in the drawings, there are cases in which the dimensional relationships and ratios are shown differently. In particular, several embodiments shown below are examples of apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention can be is not specified. In the following description, elements having the same functions and configurations are denoted by the same reference numerals, and redundant description will be given only when necessary.

(First embodiment)
FIG. 1 is a diagram schematically showing one configuration example of a stereoscopic image display device according to a first embodiment.
The stereoscopic image display device of this embodiment includes first to fourth rotating bodies 10 to 40 and a support section 50 that supports the first to fourth rotating bodies 10 to 40 . The first to fourth rotors 10 to 40 rotate about a common rotation axis AX, and the widths h of the first to fourth rotors 10 to 40 in the direction of the rotation axis AX are equal to each other.

The first rotating body 10 includes a transparent member 12, a first light emitting element group L1A, and a second light emitting element group L1B.
The transparent member 12 has, for example, a tubular shape formed by stacking circles with a radius r1 (r1>0) around the rotation axis AX in the direction in which the rotation axis AX extends, and has a substantially V-shaped cross section passing through the rotation axis AX. Shape. The transparent member 12 is made of a material that transmits light, such as a transparent resin material.

The first light emitting element group L1A and the second light emitting element group L1B are arranged, for example, on the inner surface of the transparent member 12 (the surface facing the second rotor 20) along the direction in which the rotation axis AX extends. The second light emitting element group L1B is arranged at a position overlapping the first light emitting element group L1A when the transparent member 12 is rotated by 180°. That is, the first light emitting element group L1A, the second light emitting element group L1B, and the rotation axis AX are arranged on one cross section of the transparent member 12, and the first light emission The element group L1A and the second light emitting element group L1B are arranged at positions that are symmetrical with respect to the rotation axis AX. Therefore, when the first rotating body 10 is rotated about the rotation axis AX, the first light emitting element group L1A and the second light emitting element group L1B follow the same orbit.

The second rotating body 20 includes a transparent member 22, a third light emitting element group L2A, and a fourth light emitting element group L2B.
The transparent member 22 has, for example, a cylindrical shape in which circles with a radius r2 (r1>r2>0) centered on the rotation axis AX are stacked in the direction in which the rotation axis AX extends. It is V-shaped. The transparent member 22 is arranged inside the transparent member 12 of the first rotor 10 . The transparent member 22 is made of a material that transmits light, such as a transparent resin material.

The third light emitting element group L2A and the fourth light emitting element group L2B are arranged, for example, on the inner surface of the transparent member 22 (the surface facing the third rotor 30) along the direction in which the rotation axis AX extends. The fourth light emitting element group L2B is arranged at a position overlapping with the third light emitting element group L2A when the transparent member 22 is rotated by 180°. That is, the third light emitting element group L2A, the fourth light emitting element group L2B, and the rotation axis AX are arranged on one cross section of the transparent member 22, and the third light emission The element group L2A and the fourth light emitting element group L2B are arranged at positions that are symmetrical with respect to the rotation axis AX. Therefore, when the second rotating body 20 is rotated about the rotation axis AX, the third light emitting element group L2A and the fourth light emitting element group L2B follow the same orbit.

The third rotating body 30 includes a transparent member 32, a fifth light emitting element group L3A, and a sixth light emitting element group L3B.
The transparent member 32 has, for example, a cylindrical shape in which circles with a radius r3 (r2>r3>0) centered on the rotation axis AX are stacked in the direction in which the rotation axis AX extends. It is V-shaped. The transparent member 32 is arranged inside the transparent member 22 of the second rotating body 20 . The transparent member 32 is made of a material that transmits light, such as a transparent resin material.

The fifth light emitting element group L3A and the sixth light emitting element group L3B are arranged, for example, on the inner surface of the transparent member 32 (the surface facing the fourth rotating body 40) along the direction in which the rotation axis AX extends. The sixth light emitting element group L3B is arranged at a position overlapping the fifth light emitting element group L3A when the transparent member 32 is rotated by 180°. That is, the fifth light emitting element group L3A, the sixth light emitting element group L3B, and the rotation axis AX are arranged on one cross section of the transparent member 32, and the fifth light emission is performed on the cross section of the transparent member 32 including the rotation axis AX. The element group L3A and the sixth light emitting element group L3B are arranged at positions that are symmetrical with respect to the rotation axis AX. Therefore, when the third rotating body 30 is rotated about the rotation axis AX, the fifth light emitting element group L3A and the sixth light emitting element group L3B follow the same orbit.

The fourth rotor 40 includes a transparent member 42, a seventh light emitting element group L4A, and an eighth light emitting element group L4B.
The transparent member 42 has, for example, a cylindrical shape in which circles with a radius r4 (r3>r4>0) centered on a common rotation axis AX are stacked in the direction in which the rotation axis AX extends. is approximately V-shaped. The transparent member 42 is arranged inside the transparent member 32 of the third rotor 30 . The transparent member 42 is made of a material that transmits light, such as a transparent resin material.

The seventh light emitting element group L4A and the eighth light emitting element group L4B are arranged along the direction in which the rotation axis AX extends, for example, on the inner surface of the transparent member 42 (the surface on the rotation axis AX side). The eighth light emitting element group L4B is arranged at a position overlapping the seventh light emitting element group L4A when the transparent member 42 is rotated by 180°. That is, the seventh light emitting element group L4A, the eighth light emitting element group L4B, and the rotation axis AX are arranged on one cross section of the transparent member 42, and the seventh light emission is performed on the one cross section of the transparent member 42 including the rotation axis AX. The element group L4A and the eighth light emitting element group L4B are arranged at positions that are symmetrical with respect to the rotation axis AX. Therefore, when the fourth rotating body 40 is rotated about the rotation axis AX, the seventh light emitting element group L4A and the eighth light emitting element group L4B pass through the same orbit.

Each of the first light emitting element group L1A to the eighth light emitting element group L4B includes a plurality of light emitting elements. The light-emitting elements constituting the first light-emitting element group L1A to the eighth light-emitting element group L4B are elements that can be turned on and off by current or voltage, and each element has a size of several millimeters or less ( (millimeter order or less) is desirable. Specifically, μ-LEDs and mini-LEDs can be employed as the light emitting elements constituting the first light emitting element group L1A to the eighth light emitting element group L4B.

The first light emitting element group L1A to the eighth light emitting element group L4B may include light emitting elements of multiple colors. Each of the first light emitting element group L1A to the eighth light emitting element group L4B includes, for example, a plurality of unit light emitting elements (shown in FIG. 3) including a red light emitting element LR, a green light emitting element LG, and a blue light emitting element LB. may be In each light emitting element group, light emitting elements of the same color may be arranged in stripes along the direction of the rotation axis AX, and light emitting elements of a plurality of colors may be arranged along the direction of the rotation axis AX. It may be arranged in a line form periodically in the order of blue or the like.
Note that the first light emitting element group L1A to the eighth light emitting element group L4B are arranged on the inner surfaces of the first to fourth rotating bodies 10 to 40, but are arranged on the outer surfaces of the first to fourth rotating bodies 10 to 40. may have been

The first to fourth rotating bodies 10 to 40 are arranged so as to overlap in the radial direction of a circle centered on the rotation axis AX (the direction in which r1, r2, r3, and r4 extend). The first to fourth rotors 10 to 40 are fixed at one end of the direction in which the common rotation axis AX extends (Z-axis direction), and are supported so as to rotate simultaneously about the rotation axis AX. It is held in part 50 .

The first light emitting element group L1A, the third light emitting element group L2A, the fifth light emitting element group L3A, and the seventh light emitting element group L4A are arranged on different planes including the rotation axis AX. For example, the plane on which the first light emitting element group L1A is arranged and the plane on which the third light emitting element group L2A is arranged form an angle of 45° around the rotation axis AX. The plane on which the third light emitting element group L2A is arranged and the plane on which the fifth light emitting element group L3A is arranged form an angle of 45° around the rotation axis AX. The plane on which the fifth light emitting element group L3A is arranged and the plane on which the seventh light emitting element group L4A is arranged form an angle of 45° around the rotation axis AX.

FIG. 2 is a diagram schematically showing one configuration example of a drive circuit that drives the stereoscopic image display device of the first embodiment.
FIG. 3 is a diagram schematically showing the configuration of a unit light-emitting element including a red element, a green element, and a blue element in each light-emitting element group of the stereoscopic image display device of the first embodiment.

The support portion 50 is fixed to one end of each of the first to fourth rotors 10 to 40, for example, in the direction in which the rotation axis AX extends. The support unit 50 includes a parallel/serial conversion circuit C1 that converts an externally supplied image signal from a parallel signal to a serial signal, and a fixed terminal of a brush C2 that supplies the serial signal to the first to fourth rotating bodies 10 to 40. (not shown).

Each of the first to eighth light emitting element groups L1A to L4B is connected to a rotating terminal (not shown) of the brush C2, and converts a serial signal supplied to the rotating terminal into a parallel signal to generate the first to eighth light emitting element groups. It includes a serial/parallel conversion circuit C3 that supplies light to L1A to L4B, and a plurality of unit light emitting elements A1, A2, . . . (or B1, B2, .

The parallel/serial conversion circuit C1 receives, for example, image signal data, clock signals, and synchronization signals (for example, horizontal synchronization signals and vertical synchronization signals) from the outside. For example, the parallel/serial conversion circuit C1 receives in parallel image signal data to be displayed on the plurality of unit light emitting elements A1, A2, . . . Red element, green element, and blue element corresponding to the arrangement order of the light emitting elements A1, A2, . Output to

The brush C2 has, for example, a plurality of fixed terminals corresponding to the resolution for switching the display of the first to eighth light emitting element groups L1A to L4B, corresponding to the first to eighth light emitting element groups L1A to L4B. It has eight rotating terminals.

For example, the brush C2 includes a first rotating terminal corresponding to the first light emitting element group L1A of the first rotating body 10, a second rotating terminal corresponding to the second light emitting element group L1B, and a 72 pieces arranged at positions where they are electrically connected to the first rotary terminal and the second rotary terminal in order when the first rotary terminal and the second rotary terminal are rotated, and arranged every 5° in the orbit of rotation of the first rotary terminal and the second rotary terminal. and a first fixed terminal of The first fixed terminals may include, for example, a terminal for transmitting image signal data, a terminal for transmitting clock signals, and a terminal for transmitting synchronization signals.

Similarly, the brush C2 includes a third rotating terminal corresponding to the third light emitting element group L2A of the second rotating body 20, a fourth rotating terminal corresponding to the fourth light emitting element group L2B, and a terminal for rotating the second rotating body 20. 72 arranged at a position to be electrically connected to the third rotary terminal and the fourth rotary terminal in order when they are being rotated, and arranged every 5° in the orbit in which the third rotary terminal and the fourth rotary terminal rotate. and second fixed terminals. The second fixed terminals may include, for example, a terminal for transmitting image signal data, a terminal for transmitting clock signals, and a terminal for transmitting synchronization signals.

Further, the brush C2 includes a fifth rotating terminal corresponding to the fifth light emitting element group L3A of the third rotating body 30, a sixth rotating terminal corresponding to the sixth light emitting element group L3B, and the third rotating body 30 rotating. 72 pieces arranged at 5° intervals in the trajectory of rotation of the fifth and sixth rotary terminals, and are arranged at positions sequentially electrically connected to the fifth and sixth rotary terminals when the and a third fixed terminal of The third fixed terminal may include, for example, a terminal that transmits image signal data, a terminal that transmits a clock signal, and a terminal that transmits a synchronization signal.

In addition, the brush C2 includes a seventh rotating terminal corresponding to the seventh light emitting element group L4A of the fourth rotating body 40, an eighth rotating terminal corresponding to the eighth light emitting element group L4B, and the fourth rotating body 40 rotating. 72 pieces arranged at 5° intervals in the trajectory of rotation of the seventh rotary terminal and the eighth rotary terminal. and a fourth fixed terminal of The fourth fixed terminal may include, for example, a terminal for transmitting image signal data, a terminal for transmitting clock signals, and a terminal for transmitting synchronization signals.

The rotating terminals of the brush C2 are electrically connected to a plurality of fixed terminals in sequence for each unit time, and receive corresponding image signal data from the fixed terminals for each unit time and output to the serial/parallel conversion circuit C3.

The serial/parallel conversion circuit C3 converts the serial image signal data supplied from the rotating terminal of the brush C2 into parallel image signal data for causing the red element, the green element and the blue element to emit light, and generates a synchronizing signal and a clock signal. are output to the respective unit light emitting elements. The serial/parallel conversion circuit C3 can be realized by V-by-OneHS, for example.

A current corresponding to image signal data supplied at a predetermined timing in synchronization with a synchronization signal is applied to each of the red, green and blue elements included in the light emitting element groups L1A and L1B (switches SR and SG , SB are closed), and light is emitted at a timing corresponding to the display image.

FIG. 4 is a diagram schematically showing an example of an image that can be displayed by the stereoscopic image display device of the first embodiment;
5A and 5B are diagrams for explaining an example of image signal data supplied to the first rotator when displaying the image shown in FIG. 4. FIG.

For example, when converting the position on the rotating body from the rotating coordinate system to the three-dimensional XYZ coordinate system, the conversion is performed by x=r·cos φ, y=r·sin φ, z=z, and φ=ωt. is possible. Here, z is a position coordinate in the direction of the rotation axis AX when the lower end of the rotating body is zero, and x and y are position coordinates orthogonal to each other on a position plane orthogonal to the rotation axis AX. r is the distance between the rotation axis AX and the rotating body in z, Φ is the rotation angle, ω is the rotation angular velocity, and t is the time.

In this example, the letters "HOT" are displayed in red by the first rotating body 10 .
Here, an example is shown in which each of the first light emitting element group L1A and the second light emitting element group L1B includes seven unit light emitting elements (A1-A7, B1-B7). The unit light emitting elements A1 to A7 are arranged side by side on the inner surface of the transparent member 12 in the order of A1, A2, . Similarly, the unit light emitting elements B1-B2 are arranged side by side in the order of B1, B2, . ing.

Further, the first rotating body 10 rotates, for example, at a rotation period T (=100 msec (10 Hz) or more and 200 msec (5 Hz) or less), (0/72)×T, (1/72)×T, (71 /72)×T, (72/72)×T, and the time of one period is equally divided into 72 to control the display of the first light emitting element group L1A and the second light emitting element group L1B. Therefore, it is possible to switch the display state of the first light emitting element group L1A and the second light emitting element group L1B each time the first rotating body 10 rotates by 5° (360°/72).

For example, the position where the first light emitting element group L1A is initially arranged is 0°, the position where the second light emitting element group L1B is arranged is 180°, and the transparent member 12 opens the first rotor 10. The positive direction of rotation is the counterclockwise direction when viewed from the side where the

At this time, in the first light emitting element group L1A, the red light emitting elements of the unit light emitting elements A2 to A6 emit light at the positions of 240°, 255°, 265°, 275°, and 295°, and the red light emitting elements at the positions of 245° and 250° The red light emitting element of unit light emitting element A4 emits light at the position of 270°, the red light emitting elements of unit light emitting elements A2 and A6 emit light at positions of 285°, 290°, 300° and 305°. of the red light emitting element emits light.

In the second light emitting element group L1B, the red light emitting elements of the unit light emitting elements B2 to B6 emit light at the positions of 240°, 255°, 265°, 275°, and 295°, and the unit light emitting elements at the positions of 245° and 250°. The red light emitting element of the element B4 emits light, the red light emitting elements of the unit light emitting elements B2 and B6 emit light at the position of 270°, and the unit light emitting element B2 emits red light at the positions of 285°, 290°, 300° and 305°. The device emits light.

6A and 6B are diagrams for explaining an example of image signal data supplied to the second rotator when displaying the image shown in FIG. 4. FIG.
In this example, the second rotator 20 displays a stereoscopic image of the side surface of a blue truncated cone.

Here, an example is shown in which each of the third light emitting element group L2A and the fourth light emitting element group L2B includes seven unit light emitting elements (C1-C7, D1-D7). The unit light emitting elements C1 to C7 are arranged side by side along the direction substantially parallel to the rotation axis AX on the inner surface of the transparent member 22 in order of C1, C2, . Similarly, the unit light emitting elements D1-D2 are arranged side by side in the order of D1, D2, . ing.

Further, the second rotating body 20 rotates, for example, at a rotation period T (=100 msec (10 Hz) or more and 200 msec (5 Hz) or less), (0/72)×T, (1/72)×T, (71 /72)×T and (72/72)×T, one cycle time is equally divided into 72 to control the display of the third light emitting element group L2A and the fourth light emitting element group L2B. Therefore, it is possible to switch the display state of the third light emitting element group L2A and the fourth light emitting element group L2B each time the second rotating body 20 rotates by 5° (360°/72).

For example, the position where the third light emitting element group L2A is first arranged is 45°, the position where the fourth light emitting element group L2B is arranged is 225°, and the transparent member 22 opens the second rotor 20. The positive direction of rotation is the counterclockwise direction when viewed from the side where the

At this time, in the third light emitting element group L2A, the blue light emitting elements of the unit light emitting elements C1 to C7 emit light at all rotation angles. In addition, in the fourth light emitting element group L2B, the blue light emitting elements of the unit light emitting elements D1 to D7 emit light at all rotation angles.

7A and 7B are diagrams for explaining an example of image signal data supplied to the third rotator when displaying the image shown in FIG. 4. FIG.
In this example, the third rotating body 30 displays a stereoscopic image of the side of a green truncated cone.

Here, an example is shown in which the fifth light emitting element group L3A and the sixth light emitting element group L3B each include seven unit light emitting elements (E1-E7, F1-F7). The unit light emitting elements E1 to E7 are arranged side by side along the direction substantially parallel to the rotation axis AX on the inner surface of the transparent member 32 in order of E1, E2, . Similarly, the unit light emitting elements D1-D2 are arranged side by side in the order of D1, D2, . ing.

Further, the third rotating body 30 rotates, for example, at a rotation period T (=100 msec (10 Hz) or more and 200 msec (5 Hz) or less), (0/72)×T, (1/72)×T, (71 /72)×T, (72/72)×T, and the time of one period is equally divided into 72 to control the display of the fifth light emitting element group L3A and the sixth light emitting element group L3B. Therefore, it is possible to switch the display state of the fifth light emitting element group L3A and the sixth light emitting element group L3B each time the third rotating body 30 rotates by 5° (360°/72).

For example, the position where the fifth light emitting element group L3A is first arranged is 90°, the position where the sixth light emitting element group L3B is arranged is 270°, and the transparent member 32 opens the third rotor 30. The positive direction of rotation is the counterclockwise direction when viewed from the side where the

At this time, in the fifth light emitting element group L3A, the green light emitting elements of the unit light emitting elements E1 to E7 emit light at all rotation angles. Further, in the sixth light emitting element group L3B, the green light emitting elements of the unit light emitting elements F1 to F7 emit light at all rotation angles.

In this example, since the fourth rotating body 40 does not display a stereoscopic image, illustration of image signal data is omitted. In the fourth rotating body 40, similarly to the first to third rotating bodies 10 to 30, the seventh light emitting element group L4A and the eighth light emitting element group L4B each include seven unit light emitting elements (not shown). The seven unit light emitting elements are arranged in order from the opening side of the transparent member 42 along the direction substantially parallel to the rotation axis AX on the inner surface of the transparent member 42 .

Further, the fourth rotor 40 rotates, for example, at a rotation period T (=100 msec (10 Hz) or more and 200 msec (5 Hz) or less), (0/72)×T, (1/72)×T, (71 /72)×T and (72/72)×T, one cycle time is equally divided into 72, and the display of the seventh light emitting element group L4A and the eighth light emitting element group L4B is controlled. Therefore, it is possible to switch the display state of the seventh light emitting element group L4A and the eighth light emitting element group L4B each time the fourth rotating body 40 rotates by 5° (360°/72).

In the above example, the position where the seventh light emitting element group L4A is first arranged is 135°, the position where the eighth light emitting element group L4B is arranged is 315°, and the fourth rotating body 40 is positioned at the transparent member 42. When viewed from the opening side, the counterclockwise direction is controlled as the positive rotation direction.

By supplying the image signal data to the first to fourth rotors 10 to 40 of the stereoscopic image display apparatus of the present embodiment as described above, "HOT" and red characters are displayed as shown in FIG. It is possible to display a stereoscopic image in which a green truncated cone is displayed inside and a blue truncated cone is displayed inside.

For example, a display image of a flat display having a backlight as a light source is visually recognized by a user after light emitted from the light source is transmitted through a liquid crystal layer, a plurality of optical sheets, or the like. On the other hand, in the stereoscopic image display device 100 of the present embodiment, the light emitted from the light emitting elements attached to the inner surface of the rotating body can be visually recognized by the user through a plurality of transparent members. It is possible to display a brighter image with little loss of emitted light.

FIG. 8 is a diagram schematically showing one configuration example of the floating display of the first embodiment.
The floating-in-air display of the present embodiment includes the stereoscopic image display device 100 and the mirror device 200 described above. The mirror device 200 can reflect the light emitted from the stereoscopic image display device 100 and project the stereoscopic image displayed by the stereoscopic image display device 100 at a plane-symmetrical position with respect to the mirror device 200 .

The mirror device 200 can employ an existing configuration, and is, for example, an optical element array in which unit optical elements having two reflecting surfaces are arranged in a matrix. In the above configuration, the two reflecting surfaces are arranged to form a right angle with each other, one end is the entrance and the other end is the exit, and the incident light is reflected once by each of the two reflecting surfaces. It is emitted from the exit port.

In the floating-in-air display of this embodiment, by arranging the stereoscopic image display device 100 on the entrance side of the mirror device 200, it is possible to display the stereoscopic image 300 on the exit side.

As described above, according to the present embodiment, the stereoscopic image display device 100 can display a bright stereoscopic image, and the stereoscopic image 300 displayed via the mirror device 200 can also be displayed brightly. be.
That is, according to this embodiment, it is possible to realize a stereoscopic image display device and a floating display that can display a bright stereoscopic image.

Moreover, the stereoscopic image display device 100 displays a stereoscopic image by rotating the rotating bodies 10 to 40. For example, it is dangerous for a child to touch the displayed stereoscopic image. There is no danger even if you try to touch the three-dimensional image 300 projected by. Therefore, according to the floating display, it is possible to display a stereoscopic image more safely.

FIG. 9 is a diagram schematically showing one configuration example of the stereoscopic image display device of the second embodiment.
In addition, in the following description, the same reference numerals are given to the same configurations as those of the above-described first embodiment, and the description thereof will be omitted.

A three-dimensional image display device 110 of this embodiment differs from that of the first embodiment described above in the shapes of the first to fourth rotating bodies 10 to 40 .
In the first embodiment described above, the first to fourth rotating bodies 10 to 40 have a substantially V-shaped cross section including the rotation axis AX, but in the present embodiment, the first to fourth rotating bodies 10 to 40 is a cylindrical shape with a height (width in the Z-axis direction) of h.
That is, the first rotating body 10 has a cylindrical shape in which circles centered on the rotation axis AX and having a radius r1 are stacked in the direction in which the rotation axis AX extends (Z-axis direction), and the radius r1 in the direction in which the rotation axis AX extends It does not change. The second rotating body 20 has a cylindrical shape in which circles with a radius r2 (<r1) centered on the rotation axis AX are stacked in the direction in which the rotation axis AX extends, and the radius r2 does not change in the direction in which the rotation axis AX extends. The third rotating body 30 has a cylindrical shape in which circles with a radius r3 (<r2) centered on the rotation axis AX are stacked in the direction in which the rotation axis AX extends, and the radius r3 does not change in the direction in which the rotation axis AX extends. The fourth rotating body 40 has a cylindrical shape in which circles with a radius r4 (0<r4<r3) centered on the rotation axis AX are stacked in the direction in which the rotation axis AX extends. It does not change.

For example, the first to fourth rotating bodies 10 to 40 may be supported by a common surface on one end side, or may be supported by a common beam-like member. A support portion 50 is arranged on one end side of each of the first to fourth rotors 10 to 40 .

In this embodiment, for example, when converting the position on the rotating body from the rotating coordinate system to the three-dimensional XYZ coordinate system, x=r·cos φ, y=r * It is possible to transform by sin φ, z=z, φ=ωt.

Except for the above, the stereoscopic image display device of this embodiment is the same as that of the above-described first embodiment, and by combining it with the mirror device 200, it is possible to configure a floating display.

That is, according to this embodiment, it is possible to realize a stereoscopic image display device and a floating display that can display a bright stereoscopic image. Further, according to the floating display, it is possible to display a stereoscopic image more safely.

Moreover, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the present invention at the implementation stage. Further, various inventions can be formed by appropriate combinations of the plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, components across different embodiments may be combined as appropriate.
For example, in the above-described embodiments, the stereoscopic image display device includes four rotating bodies, but the stereoscopic display device may include at least two rotating bodies.
Moreover, each of the plurality of rotating bodies of the stereoscopic image display device may be provided with at least one light emitting element group. In that case as well, a stereoscopic image is displayed by arranging the light emitting element groups provided by the plurality of rotating bodies on mutually different planes including the rotation axis (so that they do not overlap each other when viewed from the side where the user views). It is possible to
Moreover, the plurality of rotating bodies of the stereoscopic image display device are not limited to the above shape. The shape of the rotating body may be appropriately changed according to the stereoscopic image to be displayed on the stereoscopic image display device.
In either case, the same effect as the above embodiment can be obtained.

DESCRIPTION OF SYMBOLS 10... 1st rotating body 20... 2nd rotating body 30... 3rd rotating body 40... 4th rotating body 12, 22, 32, 42... Transparent member 50... Support part 100, 110... Solid image Display device 200 Mirror device 300 Stereoscopic image A1-A7, B1-B2, C1-C7, D1-D7, E1-E7, F1-F7 Unit light emitting element C1 Parallel/serial conversion circuit C2 . . brush, C3 .. serial/parallel conversion circuit, L1A to L4B .. first to eighth light emitting element groups.

Claims (5)

a plurality of rotating bodies each comprising a transparent member and a group of light emitting elements disposed on the transparent member and rotatable about a common rotating shaft;
a parallel/serial conversion circuit for converting the arrangement order of image signal data supplied from the outside from parallel to serial;
a plurality of fixed terminals supplied with image signal data output from the parallel/serial conversion circuit;
a rotating terminal provided corresponding to each of the light emitting element groups and sequentially electrically connected to the plurality of fixed terminals by rotation of the rotating body;
a serial/parallel conversion circuit that converts the arrangement order of the image signal data received by the rotary terminal from serial to parallel and outputs the data to the light emitting element group;
The transparent member has a shape in which circles centered on the rotation axis are stacked,
each of the plurality of rotating bodies includes a plurality of light emitting element groups arranged line-symmetrically with respect to the rotating shaft in a cross section including the rotating shaft on the rotating body;
A plurality of the rotation terminals corresponding to the plurality of the light emitting element groups are provided, and the plurality of the rotation terminals output serial image data for causing the corresponding light emitting element groups to emit light to the serial/parallel conversion circuit. , stereoscopic image display device. 2. The three-dimensional image display device according to claim 1, wherein said light emitting element groups of said plurality of rotating bodies are arranged on mutually different planes including said rotation axis. 2. The stereoscopic image display device according to claim 1 , wherein the transparent member has a substantially V-shaped cross section including the rotation axis, and the plurality of transparent members are arranged so as to overlap in a radial direction of the circle. 2. The stereoscopic image display device according to claim 1 , wherein said transparent member has a cylindrical shape, and a plurality of said transparent members are arranged so as to overlap in a radial direction of said circle. a stereoscopic image display device according to any one of claims 1 to 4 ;
two reflective surfaces arranged perpendicular to each other; an entrance into which light emitted from the stereoscopic image display device is incident; and a mirror device in which unit optical elements are arranged in a matrix.

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