JP5206076B2 - Display device - Google Patents

Description

  The present invention relates to a display device in which a real image of an image displayed on a display panel is formed at a position different from that of the display panel and the image is observed.

As a display device that displays an image displayed on a display panel such as a liquid crystal display panel at a position different from the display panel, conventionally, an image displayed on the display panel is arranged at a position different from the display panel. Some display a pseudo-stereoscopic image by projecting onto a screen (see Patent Document 1 and Patent Document 2).
Japanese Patent Laid-Open No. 2001-25036 JP 2005-221690 A

  However, the display image by the conventional display device is an image projected on the screen and is observed together with the screen, so that the stereoscopic effect is poor.

  An object of the present invention is to provide a display device capable of displaying a real image of an image displayed on a display panel as an image floating in a space different from the display panel.

The display device according to the invention of claim 1, and a case member all around having a transparent cylindrical barrel portion, so that the display surface of the image becomes perpendicular to the radial direction of the cylindrical portion, An image display means disposed on one end side in the cylindrical portion, and the image display means is inclined in a direction inclined by a predetermined angle from a normal line of the display surface to a direction along the center line of the cylindrical portion. The light having the directivity is arranged so that the light as the image is emitted from the display surface, and the light as the image is projected onto the inner peripheral surface of the cylindrical portion. Reflecting the light as the image so that the light as the image reflected by the peripheral surface forms an image in a space on the other end side of the cylindrical portion with respect to the display surface, the image display means The display surface is rotatably arranged around a central axis .

According to a second aspect of the present invention, in the display device according to the first aspect, the cylindrical portion receives at least part of the light as the image projected from the display surface onto the inner peripheral surface of the cylindrical portion. It is formed to reflect on the inner peripheral surface .

According to a third aspect of the present invention, in the display device according to the second aspect, the cylindrical portion is arranged so that the center line coincides with the display surface .

  According to the display device of the present invention, the real image of the image displayed on the display panel can be displayed like an image floating in a space different from the display panel.

(First embodiment)
1 to 4 show a first embodiment of the present invention. FIG. 1 is a partially cut perspective view of a display device, FIG. 2 is a plan view of the display device, and FIG. 3 is a cross-sectional view of the display device. It is.

  As shown in FIGS. 1 to 3, the display device has a cylindrical case member 1 and one end side in the case member 1, with an image display surface 6 facing the inner peripheral surface of the case member 1, The display surface 6 is disposed substantially perpendicular to the radial direction of the case member 1, and the light 8 corresponding to the display image is transmitted from the display surface 6 to the normal direction 6 a of the display surface 6. The display panel 5 emits light in a direction inclined at a predetermined angle θ toward the other end of the case member 1.

  In the display device of this embodiment, the case member 1 is formed of a cylindrical body 2 that is transparent on the entire circumference, and the display panel 5 is disposed on one end side in the case member 1 formed of the cylindrical body 2 on the display side. The surface 6 is opposed to the inner peripheral surface of the case member 1 opposite to the predetermined observation direction 10, and the display surface 6 is substantially perpendicular to the radial direction of the case member 1, A center position of the display surface 6 is arranged so as to coincide with a center line (front center line of the cylindrical body 2) 2a of the case member 1, and is fixed to a display panel support plate 3 provided at one end of the case member 1. ing.

  The display panel 5 displays an image on a black background. For example, a liquid crystal display comprising a liquid crystal display element and a surface light source arranged to face the surface opposite to the display surface of the liquid crystal display element. It consists of a self-luminous display panel such as a panel or an organic EL (electroluminescence) display panel.

  When the liquid crystal display panel is used for the display panel 5, the surface light source is set in advance in the above direction (the other direction of the case member 1 with respect to the normal direction 6 a of the display surface 6 of the display panel 5). A prism sheet for directing parallel light toward a direction inclined at an angle θ) or for refracting light emitted from the display surface in the above direction on the display surface side of the liquid crystal display element. And / or a lens sheet or the like is disposed. Further, when the self-luminous display panel is used for the display panel 5, a prism sheet and / or a lens sheet that emits light emitted from the display surface into parallel light and emits the light in the above direction on the display surface side, etc. Place.

  The display device displays an image on the display panel 5, the emitted light 8 from the display surface 6 of the display panel 5 is reflected by the inner peripheral surface of the case member 1, and the display in the case member 1 is displayed. A real image 9 corresponding to the display image of the display panel 5 is formed in a space in the other end direction than the panel 5, and the real image 9 is observed from the observation direction 10 in the outer periphery of the case member 1. .

  That is, a predetermined angle θ is inclined in the other end direction of the case member 1 from the display surface 6 of the display panel 5 disposed on one end side in the case member 1 with respect to the normal direction 6a of the display surface 6. The light 8 emitted in the opposite direction is transmitted from the display panel 5 in the case member 1 by the inner peripheral surface of the case member 1 made of the transparent cylindrical body 2 on the side facing the display surface 6 of the display panel 5. Is also reflected toward the space in the other end direction.

  The inner peripheral surface of the case member 1 forms a real image at a position corresponding to the radius of curvature of the reflecting surface by the function of the concave reflecting mirror, so that the display panel 5 in the case member 1 Also, the real image 9 is formed in the space in the direction of the other end.

  In the display device of this embodiment, the display panel 5 is arranged with the display surface 6 aligned with the center line 2a of the case member 1, and the curvature radius of the inner peripheral surface of the case member 1 is The real image 9 is set to be formed at a position on the center line 2a of the case member 1, and the real image 9 is formed on a surface obtained by extending the display surface of the display panel 5 in the direction of the center line 2a. Form an image.

  FIG. 4 shows a display image 7 viewed from the display surface 6 side of the display panel 5 and the real image 9 viewed from the observation direction 10. The display image 7 of the display panel 5 is in a black background. Therefore, the real image 9 is an image that appears to float in a space without a background.

  The real image 9 viewed from the observation direction 10 is an image in which the left and right are reversed in the direction along the circumferential direction of the case member 1 with respect to the display image 7 viewed from the display surface 6 side of the display panel 5. However, since the display panel 5 is arranged with the display surface 6 facing away from the observation direction 10, the real image 9 observed from the observation direction 10 is the display as shown in FIG. It is an image in the same direction as the display image 7 viewed from the display surface 6 side of the panel 5.

  Thus, the display device reflects the emitted light 8 from the display panel 5 arranged on one end side in the case member 1 by the inner peripheral surface of the case member 1, and Since a real image 9 corresponding to the display image 7 of the display panel 5 is formed in a space in the other end direction than the display panel 5, the real image of the image displayed by the display panel 5 is converted into the display panel 5. 5 can be displayed at a position different from 5 like an image floating in the space in the case member 1.

  In the above embodiment, the radius of curvature of the inner peripheral surface of the case member 1 is set so as to form the real image 9 at a position on the center line 2a of the case member 1. May be set so that the real image 9 is formed at a position shifted from the center line 2a of the case member 1 in the observation direction 10 or in the opposite direction, and the display panel 5 is configured in the above-described embodiment. (Position where the display surface 6 is aligned with the center line 2a of the case member 1) may be arranged at a position shifted in the observation direction 10 or in the opposite direction.

  Further, the display device of the above embodiment includes the case member 1 made of the cylindrical body 2 that is transparent on the entire circumference, but the case member 1 has at least the side facing the observation direction 10 to be transparent. A reflection film may be formed on the inner peripheral surface opposite to the observation direction 10, or may be made of a cylindrical body in which the peripheral wall on the opposite side is formed of a reflection plate such as a metal plate. Is not limited to a cylindrical shape, and may be a semi-cylindrical shape whose side facing the observation direction 10 is open to the outside.

(Second Embodiment)
5 to 7 show a second embodiment of the present invention. FIG. 5 is a partially cut perspective view of the display device, and FIG. 6 is a plan view of the display device. In this embodiment, components corresponding to those of the display device of the first embodiment are denoted by the same reference numerals, and description of the same components is omitted.

  In this display device, light corresponding to a display image is applied to one end side of a case member 1 formed of a cylindrical body 2 that is transparent on the entire circumference in the other end direction of the case member 1 with respect to the normal direction of the display surface 6. The display panel 5 that emits light in a direction inclined at a predetermined angle has its display surface 6 opposed to the inner peripheral surface of the case member 1, and the display surface 6 is substantially in the radial direction of the case member 1. The display panel 5 is provided so as to be rotatable about the center of the cylinder of the case member 1. In this embodiment, the display panel 5 is arranged at the center of the display surface. The position of the case member 1 is set so as to be rotatable around the center line 2a so as to coincide with the center line 2a of the case member 1, and the curvature radius of the inner peripheral surface of the case member 1 is set on the center line 2a of the case member 1 Corresponding to the display image of the display panel 5 at the position It is set so as to image a real image 9.

  In this embodiment, a turntable 4 that rotates about the center line 2a of the case member 1 is provided on the inner surface of the display panel support plate 3 provided at one end of the case member 1. The display panel 5 is fixed on the top.

  In this display device, the display panel 5 is rotated, and each time the display panel 5 rotates by the predetermined angle, the outer periphery of the three-dimensional object is divided into the display panel 5 by the predetermined angle. A plurality of images viewed from a plurality of directions are sequentially displayed.

  In the display device of this embodiment, the display panel 5 is rotatably provided in the circumferential direction of the case member 1 in the case member 1 composed of a cylindrical body 2 having a transparent entire circumference. The real image 9 that is emitted from 5 and reflected by the inner peripheral surface of the case member 1 and formed in the space of the case member 1 can be observed from substantially the entire circumferential direction of the case member 1.

  In addition, the display device is provided with the display panel 5 so that the display surface 6 can be rotated around the center line 2 a with the display surface 6 aligned with the center line 2 a of the case member 1. Since the radius of curvature is set so that the real image 9 is formed at a position on the center line 2 a of the case member 1, the real image 9 can be applied to any direction of the entire circumference of the case member 1. Can be displayed in the same size.

  Further, the display device intermittently rotates the display panel 5 at a rotation pitch of a predetermined angle, and each time the display panel 5 rotates the predetermined angle, the display panel 5 In order to sequentially display a plurality of images viewed from a plurality of directions obtained by dividing the outer circumference of each of the predetermined angles, the three-dimensional object is displayed for each observation direction around the case member 1. It is possible to display a real image 9 as seen from the surroundings while changing the angle.

  FIG. 7 shows a display image 7 viewed from the display surface 6 side for each rotation angle of the display panel 5 in the display device of this embodiment, and the orientation of the display surface 6 of the display panel 5 for each rotation angle. Shows the real image 9 viewed from the opposite direction.

  This display example is an example in which a plurality of images viewed sequentially from eight directions obtained by dividing the outer periphery of the three-dimensional object by 45 ° angles as shown in FIG. 6 are displayed on the display panel 5 in FIG. The angle described below the display panel 5 indicates the direction of the display surface 6 of the display panel 5, and the angle described above the real image 9 indicates the observation direction of the real image 9.

  In the display device of this embodiment, the image displayed on the display panel 5 may be a plurality of images viewed from a plurality of directions obtained by dividing the outer periphery of the three-dimensional object at other angles, and the three-dimensional object is displayed on the display panel 5. By sequentially displaying a plurality of images viewed from a plurality of directions divided for each angle smaller than 45 °, a real image 9 as viewed from a different direction can be obtained for a real image 9 viewed from different directions. Can be displayed.

  The image displayed on the display panel 5 at each rotation angle may be an image other than a plurality of images obtained by viewing the three-dimensional object from each of a plurality of directions. For example, the same image is displayed at each rotation angle. Thus, the same real image can be displayed in any direction along the entire circumference of the case member 1.

1 is a partially cut perspective view of a display device showing a first embodiment of the present invention. The top view of the display apparatus of a 1st Example. Sectional drawing of the display apparatus of a 1st Example. The figure which shows the display image seen from the display surface side of the display panel in the display apparatus of a 1st Example, and the real image seen from the observation direction. The partial cutaway perspective view of the display apparatus which shows the 2nd Example of this invention. The top view of the display apparatus of a 2nd Example. The display image seen from the display surface side for each rotation angle of the display panel in the display device of the second embodiment and the real image seen from the direction opposite to the direction of the display surface of the display panel for each rotation angle. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Case member, 2 ... Cylindrical body, 4 ... Turntable, 5 ... Display panel, 6 ... Display surface, 7 ... Display image of display panel, 8 ... Light emitted from display panel, 9 ... Real image, 10 ... Observation direction .

Claims (3)

A case member all around having a transparent cylindrical barrel portion,
Image display means arranged on one end side in the cylindrical portion so that an image display surface is perpendicular to the radial direction of the cylindrical portion;
With
The image display means emits light as the image having directivity in a direction inclined by a predetermined angle from a normal line of the display surface to a direction along the center line of the cylindrical portion, from the display surface. The light as the image is arranged so as to be projected onto the inner peripheral surface of the cylindrical portion ,
The cylindrical portion reflects the light as the image so that the light as the image reflected by the inner peripheral surface forms an image in a space on the other end side of the cylindrical portion with respect to the display surface,
The display device, wherein the image display means is arranged such that the display surface is rotatable about the center line as a center axis .   The said cylindrical part is formed so that at least one part of the light as the said image projected on the internal peripheral surface of this cylindrical part may be reflected in the said internal peripheral surface from the said display surface. The display device according to 1.   The display device according to claim 2, wherein the cylindrical portion is arranged so that the center line coincides with the display surface.

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