WO2000065561A1

WO2000065561A1 - Display desk

Info

Publication number: WO2000065561A1
Application number: PCT/JP2000/002633
Authority: WO
Inventors: Hiroaki Kitano
Original assignee: Japan Science And Technology Corporation
Priority date: 1999-04-22
Filing date: 2000-04-21
Publication date: 2000-11-02
Also published as: JP3643907B2; JP2000305482A

Abstract

A display desk (10, 20, 30, 40, 50, 60) capable of projecting from below an image onto the top plate (11, 21) of a desk used at meetings, and permitting writing on the top plate surface with a marker or the like, comprising a horizontal, platy top plate (11, 21) of a transparent material, and a projection means (12, 23) disposed below the top plate, for projecting an image onto the top plate, wherein the top plate is provided with a translucent surface (11a) onto which to project an image, and is roughened on the upper face (11d) thereof, whereby meetings can be held while an image is projected on the top plate, the image is operated on with a keyboard on the top plate, if necessary, and writing is made on the top plate.

Description

Detailed display and desk technology

The present invention relates to a ray desk configured to project an image from below onto a desk top. Background art

Conventionally, when a meeting or the like is held by a large number of people, a necessary image is projected onto a screen provided on the wall of the meeting room or the wall itself as a so-called presentation using a project evening.

However, in the case of the projection image configured as described above, since the participants of the conference or the like need to turn their faces on the screen or the wall to view the projected image, the discussion between the participants is interrupted. Sometimes. In addition, in order to enhance the visibility of the projected image, it is necessary to make the surroundings slightly darker, which may hinder the smooth operation of a conference or the like.

Furthermore, when it is desired to write a description on a projected image using a marker or the like, it is necessary to separately prepare a so-called white board or the like as a screen and use it.

In view of the above points, the present invention provides a display desk which projects an image from below onto a tabletop of a desk used in a conference or the like and enables writing on the surface of the tabletop with a marker or the like. It is intended to be. Disclosure of the invention

In order to achieve the above object, according to one aspect of the present invention, the apparatus includes a top plate made of a transparent material, and a projection unit disposed below the top plate and projecting an image toward the top plate. The top plate has a semi-transmissive surface on which an image is projected, and is configured such that at least a part of the upper surface including the image projection region is roughened. You.

The display desk according to the present invention is preferably configured such that the top plate sandwiches a semi-permeable sheet with two glass sheets.

The display desk according to the present invention is preferably arranged such that the upper surface of the top plate and the semi-transmissive surface are close to each other.

Further, in the display desk according to the present invention, preferably, a reflection member for bending an optical path is disposed obliquely with respect to the top plate in an optical path between the projection means and the top plate.

The display desk according to the present invention is preferably arranged such that the reflection member is disposed at an angle of approximately 45 degrees with respect to the top plate, and the projection means projects an image in a substantially horizontal direction. More preferably, the reflecting member has a reflecting surface on the surface of the flat plate.

The display desk according to the present invention is preferably provided with a rotating optical system that can rotate an incident light beam around the optical axis by an arbitrary angle between the projection means and the top plate. The system can be built into the projection means.

Further, in the display desk according to the present invention, a keyboard device can be provided on the top surface of the top plate adjacent to the image display position of the top plate by the projection means. Furthermore, a display desk according to another aspect of the present invention includes a top plate made of a transparent material and having at least a part of the upper surface including an image projection area roughened, and a top plate disposed below the top plate. Projecting means for projecting an image toward the camera, imaging means arranged above the top board for imaging an area of the image projected on the top board, and an electronic computer for inputting an imaging signal from the imaging means. It is characterized by:

The present invention is configured as described above, and an image is projected from below onto the transparent top plate by the projecting means. Therefore, when conducting a meeting or the like, all the participants hold the top plate of the display desk. By sitting in a surrounding chair so that all participants face each other, the image projected on the translucent surface of the tabletop from below can be viewed from above.

Therefore, it is possible to obtain an image display that is easy to see even when the surroundings are bright, and each participant can view the image while facing each other without significantly changing the face direction. Since discussions can be held face-to-face, meetings and other operations can be conducted smoothly.

If you want to add an explanation to the image, write it with a marker or the like on the roughened upper surface of the top plate. Can be. Therefore, there is no need to use a screen that is also used as a whiteboard as in the past.

Further, when the projection of the image from the projection means is not performed, it can be used as a normal desk having a translucent top plate.

When the top plate is formed by sandwiching a semi-permeable sheet between two sheet glasses, flatness is achieved by sandwiching a thin semi-permeable sheet between the two sheet glasses. While maintaining the strength, the strength of the entire top plate can be ensured.

When the upper surface of the top plate and the semi-transmissive surface are arranged close to each other, the shift of the double image due to the reflection between the semi-transmissive surface and the upper surface of the top plate is reduced, and an easy-to-view image can be obtained. it can.

In the case where a flat reflecting member for bending the optical path is disposed obliquely with respect to the top plate in the optical path between the projection unit and the top plate, the projection unit is located below the top plate. The reflector is arranged in the direction of inclination of the reflector from the reflector, so that the top plate can be freely set to the optimum height for meetings and the like, and the top plate can be adjusted from the projection means via the reflector. Since the distance to the semi-transmissive surface can be increased, the cost of the projection means can be reduced, and an image with less distortion can be projected.

When the reflecting member is disposed at an angle of about 45 degrees with respect to the top plate, and the projecting means is arranged to project an image in a substantially horizontal direction, the light is reflected from the projecting means. The reflected light of the image projected on the semi-transmissive surface of the top plate via the member returns to the projecting means via the reflecting member again, and this reflected light enters other parts of the top plate to generate a noise image. And an easy-to-view image can be projected.

When the reflecting member has a reflecting surface on the surface of the flat plate, the projection light from the projecting means is reflected by the reflecting surface of the reflecting member. It is easy to see because there is no double reflection on the glass surface and reflective film Images can be projected.

If a rotating optical system that can rotate the incident light beam around the optical axis by an arbitrary angle is provided between the projection means and the top, the positional relationship between the projection means and the top is changed. The image projected on the semi-transparent surface of the tabletop can be rotated in any direction without any need, so that an upright image can be displayed to each participant as necessary. .

In this case, when the rotating optical system is incorporated in the projection means, the rotating optical system is moved together with the projection means when the projection means is moved, so that portability is improved. At the same time, when the projection means is installed on the top plate again, it is not necessary to position the rotating optical system with respect to the projection means, and the setting can be easily performed.

When a keyboard device is provided on the top surface of the top plate adjacent to the image display position of the top plate by the projection unit, various information devices such as a personal computer, a word processor, etc. By inputting this image signal, the display desk can be used as a display device of these information devices. As a result, it can be used as a display / monitor when using a personal computer in a relatively small space in a general home or SOHO, and can be used as a normal work desk or table when not in use.

In addition, by taking an image of the top board with imaging means, for example, a CCD camera, and sending an imaging signal to an electronic device such as a computer connected thereto, the written content can be stored and processed in the computer. Therefore, image information from, for example, a personal computer connected to the projection means is projected onto the top plate, and the contents of the meeting are written on the top plate with an aqueous marker or the like, and the written contents are photographed together with the image information by the imaging means. Then, by sending this information to a personal computer, the latest information can be recorded, stored, and played back. BRIEF DESCRIPTION OF THE FIGURES

BRIEF DESCRIPTION OF THE DRAWINGS It will be more understood. The embodiments shown in the accompanying drawings are not intended to specify the invention, but are merely used for facilitating explanation and understanding.

In the figure,

FIG. 1 is a schematic side view showing a configuration of a first embodiment of a display desk according to the present invention.

FIG. 2 is a partially enlarged sectional view of a top plate in the display desk of FIG. FIG. 3 is a schematic side view showing the configuration of the second embodiment of the display desk according to the present invention.

FIG. 4 is a partially enlarged sectional view of a reflection member of the display desk shown in FIG.

FIG. 5 is a schematic side view showing the configuration of the third embodiment of the display desk according to the present invention.

FIG. 6 is a schematic side view showing the configuration of the fourth embodiment of the display desk according to the present invention.

FIG. 7 is a plan view showing a rotating state of an image on the display desk of FIG.

FIG. 8 is a schematic side view showing the configuration of the fifth embodiment of the display desk according to the present invention.

FIG. 9 is a schematic side view showing the configuration of the sixth embodiment of the display desk according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

FIG. 1 shows a first embodiment of a display 'desk according to the present invention. In FIG. 1, a display desk 10 is composed of a horizontal plate-like top plate 11 made of a transparent material, and a projection means disposed below the top plate 11 and projecting an image toward the top plate. 1 and 2.

As shown in FIG. 2, the top plate 11 has a milky white as a semi-transmissive surface on which an image is projected. It is constructed by sandwiching a color sheet 11a between two glass plates 11b and 11c.

The milky white sheet 11a is, for example, a single specification milky white film, and the glass llb, 11c may be a float glass having a thickness of about 6 mm or 8 mm, respectively.

Further, the upper surface 1 Id of the top plate 11 is roughened by non-reflective processing, for example, by MG-10 processing by chemical treatment.

The rough surface finish may be of such an extent that ink such as a marker at the time of writing adheres well as described later.

The projection means 12 is a projector having a known configuration, and is configured to project an image via a projection lens having a predetermined focal length based on an image signal input from, for example, a personal computer 13. Have been.

Here, the projecting means 12 is arranged such that the focal point of the image is positioned on the milky sheet 1 la as a semi-transmissive surface of the top plate 11 so that the projection position is below the top plate 11 directly below the top plate 11. The optical axis is arranged vertically.

The display desk 10 according to the first embodiment of the present invention is configured as described above, and the projection light projected from the projection means 12 based on the image signal input from the personal computer 13 is illuminated. The light is emitted from below toward the plate 11 and is focused on the milky white sheet 11a as a semi-transmissive surface of the top plate 11, and an image is formed on the lower surface of the milky white sheet 11a.

In this case, when the user looks at the top plate 11 from above, an image formed on the lower surface of the milky white sheet 1 1a can be observed through the upper glass 1 lb and further through the milky white sheet 11a. .

Here, when the user writes an explanation or the like on the image while viewing the image, for example, using a water-based marker, the surface of the top plate 11, that is, the upper surface 1 1 lb of the upper glass plate 1 1 Write to d. At this time, since the upper surface 11d of the glass plate 11b is roughened, the ink of the water-based marker adheres favorably to the upper surface 1Id, and writing can be performed reliably.

FIG. 3 shows a second embodiment of the display 1 desk according to the present invention. Figure In 3, the display desk 20 includes a horizontal plate-like top plate 21 made of a transparent material, and an optical path bend disposed below the top plate 21 and disposed obliquely with respect to the top plate. Reflective member 22 and projection means 23 disposed in the optical path bent by the reflective member 22 and projecting an image toward the top plate 21 via the reflective member 22. I have. The top board 21 has the same configuration as the top board 11 of the display 'desk 10 shown in FIG.

The reflection member 22 is disposed below the top plate 21 as shown in the figure, and is disposed obliquely with respect to the top plate 21 so as to have an inclination angle of 0.

Here, as shown in FIG. 4, the reflection member 22 is configured by including a reflection film 22a on the surface of a flat plate.

The reflecting member 22 is specifically formed by, for example, applying an aluminum reflective coating to a surface of a soda lime glass as a reflecting film, for example, by vacuum evaporation. The surface of the reflection film 22 has a flatness of, for example, about 100 mR so as to be a mirror surface.

The projection means 23 has the same configuration as the projection means 12 in the display desk 10 shown in FIG. 1, and projects an image based on an image signal input from the personal convenience display 24. I do.

Here, the projection means 23 is arranged such that the focal position of the image is located on the milky white sheet 11a as a semi-transmissive surface of the top plate 21 via the reflection member 22. The display 20 according to this embodiment is configured as described above. After the projection light from the projection means 23 is reflected by the reflection surface 22 a of the reflection member 22, the top plate 21 , And is focused on the milky white sheet 11a as a semi-transmissive surface of the top plate 21, and an image is formed on the lower surface of the milky white sheet 11a. In this case, when the user looks at the top plate 21 from above, observe the image formed on the lower surface of the milky white sheet 1 1a through the upper glass plate 1 lb, and further through the milky white sheet 11a. be able to.

Here, when the user writes a description or the like on the image while viewing the image, the user may use, for example, a water-based marker to make a surface of the top plate 21, that is, the upper glass plate 11. Write on the upper surface 1 1 d of b. At this time, the glass plate lib Since the upper surface 11d is roughened, the ink of the water-based marker adheres favorably to the upper surface 11d, and writing can be performed reliably. Further, in this case, since the optical path of the projection means 23 is bent by the reflection member 22, it is not necessary to dispose the projection means 23 directly below the top plate 21, and the inclination of the reflection member 22 is not required. The height of the top plate 21 can be set to an optimal height for a conference or the like, and the height of the top plate 21 can be set from the projection means 23 to the top plate 21 via the reflection member 22. Since the distance can be made sufficiently long, the focal length of the projection lens of the projection means 23 may be long, the cost of the projection means 23 can be reduced, and an easy-to-view image with less distortion can be obtained. it can.

FIG. 5 shows a third embodiment of the display desk according to the present invention. In FIG. 5, the display desk 30 has substantially the same configuration as the display desk 20 shown in FIG. 3, and the inclination angle 0 of the reflection member 22 is set to approximately 45 degrees, and the projection desk is projected. The configuration is different only in that the optical axis of the means 23 is disposed substantially horizontally.

According to the display desk 30 having such a configuration, the display desk 20 operates in the same manner as the display desk 20 in FIG. 3, and the projection unit 23 transmits the light to the semi-transmissive surface of the top plate 21 via the reflection member 22. The reflected light of the projected image returns to the projecting means via the reflecting member 22 again. Therefore, the reflected light is re-reflected by the reflecting member and is incident on another portion of the top plate, so that an easy-to-view image can be projected without becoming a noise image.

FIG. 6 shows a fourth embodiment of the display desk according to the present invention. In FIG. 6, the display desk 40 has substantially the same configuration as the display 'desk 30 shown in FIG. 5, and is provided between the projection means 23 and the top plate 21, and in the case shown in FIG. Immediately before the means 23, the configuration is different only in that a rotating optical system 41 capable of rotating an incident light beam around the optical axis by an arbitrary angle is provided.

The rotating optical system 41 has a known configuration, and rotates the internal prism around the optical axis so that the emitted light beam is rotated by an arbitrary angle around the optical axis with respect to the incident light beam. It has become.

According to the display desk 40 having such a configuration, the display shown in FIG. An image projected on the semi-transmissive surface of the top plate 21 from the projection means 23 via the reflecting member 22 is rotated by operating the rotating optical system 41, while acting in the same manner as the disc 30. Will be. As a result, the image shown in FIG. 7A is rotated sideways by the operation of the rotating optical system 41, for example, as shown in FIG. 7B. Therefore, when there are a large number of participants around the top board 21, by appropriately operating the rotating optical system 41, an upright image is displayed for each participant as necessary. be able to.

FIG. 8 shows a fifth embodiment of the display 'desk according to the present invention. In FIG. 8, the display desk 50 has substantially the same configuration as the display and desk 30 shown in FIG. 5, and the area of the image projected on the top plate 21 is located above the top plate 21. The configuration is different only in that an imaging unit 51 for imaging is provided.

The imaging means 51 is, for example, a CCD camera or the like having a known configuration. The imaging means 51 includes an image projected on a semi-transmissive surface of the top plate 21 and a roughened surface of a glass plate above the top plate 21. An image of the written content is written.

Further, the imaging means 51 preferably outputs an imaging signal to, for example, a personal computer 24.

According to the display 'desk 50 having such a configuration, it operates in the same manner as the display desk 30 of FIG. 5, and the description written for the image projected on the semi-transmissive surface of the top plate 11 And the like are captured together with the image and output to the personal computer 24 or the like, so that the written contents can be stored together with the image. FIG. 9 shows a sixth embodiment of the display desk according to the present invention. In FIG. 9, the display desk 60 has substantially the same configuration as the display desk 30 shown in FIG. 5, and is adjacent to the image display position projected on the top plate 21. It is different only in that a keyboard device 61 is disposed on the upper surface of the device.

The keyboard device 61 has a known configuration, and is connected to a personal computer 24 as an input device. In addition to the personal computer 24, it can be connected to various information devices that require a display monitor such as a word processor. It may be continued.

According to the display desk 60 having such a configuration, the display desk 60 of FIG. 5 operates in the same manner as the display-desk 30 and can be used as a display device of the personal computer 24, and the personal computer 24 When not in use, it can be used as a normal work desk or table.

Therefore, when it is desired to use various information devices such as a personal computer in a relatively small space such as a general home or SOHO, it can be used as a display device that also serves as a desk.

Further, even when a mouse is used together with the keyboard device 61, friction between the ball of the mouse and the roughened surface of the top plate 21 can be ensured, so that the operability of the mouse can be improved. Become.

In the above-described embodiment, the glass plates 1 lb and 11 c constituting the top plates 11 and 21 may be any as long as the flatness of the milky white sheet 11 a can be maintained, and the necessary strength is obtained. It is desirable to keep the thickness as thin as possible from the optical point of view described below.

In other words, the glass plate 1 lb can be formed thinner to minimize the vertical deviation of the image projected on the milky white sheet 1 la and the writing of the upper surface 1 d of the glass plate 1 lb. desirable. Regarding the glass plate 11c, the reflected light of the image projected on the milky white sheet 11a is reflected again by the lower surface of the glass plate 11c and is incident on the milky white sheet 11a. Since a double image is formed, it is desirable to form the glass plate 1lc as thin as possible in order to minimize the displacement of the double image. Further, it is preferable that the top plate 11 minimize distortion of an image to be formed, but it is sufficient to maintain necessary flatness, and the top plate 11 is not limited to a linear shape but may be a curved surface or a curved surface. Can also be formed.

Further, in the above-described embodiment, the projection means 23 is configured to receive the image signal of the personal computer 24, not limited thereto. May be input.

As is apparent from the above description, according to the present invention, an image is projected from below onto the transparent top plate by the projection means. This displaySit in a chair around the desk top so that all participants face each other, and the image projected on the translucent surface of the top can be viewed from above from below. .

Therefore, it is possible to obtain an image display that is easy to see even when the surroundings are bright, and each participant can discuss while looking at the images while facing each other without significantly changing the face direction. The operation can be performed smoothly. If you want to add an explanation to the image, write the marker on the rough top surface of the top plate with a marker or the like. be able to. This eliminates the need to use a screen that is also used as a white boat as in the past. The information written by the marker can be easily erased with cloth or paper.

As described above, according to the present invention, an image is projected from below onto a tabletop of a desk used in a conference or the like, and writing on the surface of the tabletop with a marker or the like is possible. A display desk that can be applied to various uses is provided.

The present invention has been described with reference to exemplary embodiments, and various changes, omissions, and additions can be made in the embodiments without departing from the spirit and scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments, but to be understood to cover the scope defined by the elements recited in the claims and their equivalents. Industrial applicability

As described above, the display desk of the present invention is extremely useful in meetings and the like as a display desk capable of projecting an image from below onto the tabletop and writing the information on the surface of the tabletop with a marker or the like. is there.

Claims

The claim includes: a top plate made of a transparent material; and projection means disposed below the top plate and projecting an image toward the top plate.

A display desk, wherein the top plate has a semi-transmissive surface on which an image is projected, and at least a part of the upper surface including an image projection area is roughened. 2. The display 'desk' according to claim 1, wherein said top plate is constituted by sandwiching a semi-permeable sheet between two sheet glasses. 2. The display 'desk according to claim 1, wherein an upper surface of said top plate and a semi-transmissive surface are arranged close to each other. The display according to claim 1, wherein a reflection member for bending an optical path is provided in the optical path between the projection means and the top plate with respect to the top plate. desk. The reflection member is disposed at an angle of about 45 degrees with respect to the top plate, and the projection means is disposed so as to project an image in a substantially horizontal direction. Display 'Desk' as described in paragraph 4. The display 'desk according to claim 4, wherein the reflection member has a reflection surface on a surface of a flat plate. 2. The rotating optical system according to claim 1, wherein a rotating optical system capable of rotating an incident light beam around an optical axis by an arbitrary angle is provided between the projection means and the top plate. On display desk.

8. The display 'desk' according to claim 7, wherein said rotating optical system is built in projection means. 2. The display desk according to claim 1, wherein a keyboard device is provided on an upper surface of the top plate, adjacent to an image display position of the top plate by the projection means. 0. A top plate made of a transparent material and having at least a part of the upper surface including the image projection region roughened, a projection unit disposed below the top plate and projecting an image toward the top plate, What is claimed is: 1. A display desk, comprising: imaging means arranged above a board for imaging an area of an image projected on a top board; and an electronic computer for inputting an imaging signal from the imaging means.