JP4062505B2 - Table type display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a table type display device.
[0002]
[Prior art and problems to be solved by the invention]
When discussing while looking at the display screen, several people often use a large display device that can easily point the display screen with a finger or write something on or near the display screen. . As a display device used in such a case, it is considered that a table type display device having a display surface on the upper side is preferable instead of a vertical one. In discussions using a vertical display device such as a front projection projector, the number of people who explain using a screen is basically limited to one. This is because the screen can be enclosed at approximately the same distance, and explanations using the screen can be performed in the same manner by all the people who participate in the discussion, and the discussion is active.
[0003]
As a conventional table-type display device that can be used for such applications, there is an apparatus having a configuration having a hood for suppressing external light in order to display a large screen in a space-saving manner with good visibility on a desk surface. Yes (see, for example, Patent Document 1). There is also a table type information terminal device in which a screen surface is formed on a table surface (see, for example, Patent Document 2). Furthermore, an input / output device (for example, refer to Patent Document 3) that can perform key operations by photographing the movement of fingers on the display surface from above, and display by photographing the movement of hands on the display surface from above. A projection device that can perform a moving operation (for example, see Patent Document 4), a display device that can display an easy-to-see image at each position of the person facing the camera (for example, see Patent Document 5), and a display arranged on the front and the desk surface. There are also known desks (see, for example, Patent Document 6).
[0004]
There is also a display device that includes a transmissive screen having a writing surface on which a writing image can be formed and a camera. The display device captures the writing image with a camera on the back and digitizes the writing.
[0005]
[Patent Document 1]
JP 2000-166656 A
[Patent Document 2]
JP 2000-284851 A
[Patent Document 3]
JP 2000-298544 A
[Patent Document 4]
JP-A-10-164467
[Patent Document 5]
Japanese Patent Laid-Open No. 10-288932
[Patent Document 6]
JP-A-8-62722
[0006]
[Problems to be solved by the invention]
Such table type display devices currently have the following problems.
(1) No material is prepared in advance for discussion, and the paper documents and notes in the hands of participants are digitized on the spot, displayed as images, and written discussions. There are many. However, at present, there is a need for troublesome and prone to stop the flow of discussion, such as reading the documents with a scanner or the like in another place and then transferring and displaying the data.
(2) It is impossible to write something on the display surface by hand, and at most, it allows a pre-programmed operation to be performed using the touch panel. Of course, handwritten contents cannot be converted into electronic data and combined with display contents.
(3) In a state where a person surrounds the table, only some (one or two) people can view the display contents from the front. In addition, when performing screen operations, writing, etc., it is natural that the screen should be positioned in front of the body, but it is difficult to do so.
(4) If an attempt is made to place his / her materials on the table surface, there is no space on the table surface, and an operation device such as a keyboard cannot be placed.
(5) The area of the table surface, especially the length tends to be large. Therefore, even if it is desired to move the display device from room to room, it is difficult to pass through the doorway. On the other hand, if the table surface is made smaller, the screen must be made smaller, reducing visibility.
[0007]
The above-described conventional technology does not consider these problems, and of course does not provide any solution.
[0008]
The present invention has been made in view of the above-mentioned conventional problems, and a table-type display that enables the discussion of paper documents and notes at hand to be digitized on the spot, displayed as an image, and discussed while writing, etc. An object is to provide an apparatus.
[0009]
In addition, the present invention can shoot images written by handwriting, materials such as books, shadows of fingers and hands, etc., and convert those images into electronic data or operate display images from the positions of fingers and hands. It is an object of the present invention to provide a table-type display device that has been made possible.
[0010]
It is another object of the present invention to provide a table-type display device that improves the operability by allowing people surrounding the table to easily view the display contents from the front.
[0011]
It is another object of the present invention to provide a table type display device that does not require an operation device such as a keyboard on the table surface.
[0012]
A further object of the present invention is to provide a table type display device in which the length of the table surface does not have to be very large, and the entrance and the like do not become an obstacle during movement.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a table-type display device according to claim 1 of the present invention has an image display unit, and at least the image display unit. , Transparent A top plate formed of a light member; A housing for holding the top plate on the upper surface; Projection means for projecting an image from the lower side of the top plate to the image display unit, and drawn on the image display unit Or On the image display Placed object Body Imaging means for photographing through the image display unit; And means for blocking light projection by the projection means when photographing is instructed to the image pickup means, the projection means, the image pickup means, and means for blocking the light projection. Above Case Body Part In Place It is characterized by.
The term “transparent” as used in the present specification includes what is called translucent or the like having low transparency, and the transparent member refers to a member other than a so-called opaque member that cannot be visually recognized through the member.
[0014]
In order to achieve the above object, according to the second aspect of the present invention, in the table type display device according to the first aspect, the top plate has a photographing transparent window portion and is located on the photographing transparent window portion. object Body A second imaging means for photographing through the transparent window for photographing; in front Record Case Body Part It is characterized by comprising.
[0015]
In order to achieve the above object, according to the third aspect of the present invention, in the table type display device of the first aspect, the top plate has a transparent window for photographing, and the imaging means is disposed on the image display section. Drawn on Or On the image display Placed object Body A first shooting state of shooting through the image display unit, and the shooting transparent window Placed object Body Switching means for switching to the second photographing state for photographing through the transparent window for photographing; in front Record Case Body Part It is characterized by comprising.
[0016]
In order to achieve the above object, according to the fourth aspect of the present invention, in the table type display device according to any one of the first to third aspects, at least an operation device such as a keyboard is placed below the top plate. Possible flat part in front Record Case It is provided on the body.
[0017]
According to the fifth aspect of the present invention, in order to achieve the above object, in the table type display device of the fourth aspect, the flat portion corresponding portion of the top plate is formed transparently.
[0018]
In order to achieve the above object, according to the sixth aspect of the present invention, in the table type display device according to any one of the first to fifth aspects, in front The top plate has a circular shape and is approximately in the center or near the center of the top plate. in front Arrange the image display section, in front Record Case The body has a cylindrical shape, in front The top plate Case It is characterized by being arranged concentrically with the body.
[0019]
In order to achieve the above object, the table type display device according to any one of claims 2 to 5, in front The top plate has a circular shape and is approximately in the center or near the center of the top plate. in front The image display section in front On the peripheral side of the top plate in front A transparent window for shooting in front The device body has a cylindrical shape, in front The top plate Case It is characterized by being arranged concentrically with the body.
[0020]
In order to achieve the above object, according to the eighth aspect of the invention, in the table type display device of the fifth aspect, in front The top plate has a circular shape and is approximately in the center or near the center of the top plate. in front The image display section in front On the peripheral side of the top plate in front Transparent window for shooting in front Place a transparent part corresponding to the flat part, in front Record Case The body has a cylindrical shape, in front The top plate Case It is characterized by being arranged concentrically with the body.
[0021]
In order to achieve the above object, the table type display device according to any one of claims 1 to 8, wherein the top plate and the top plate Case The body can be horizontally rotated integrally around a vertical axis.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view (A) and a schematic sectional view (B) showing a first embodiment of a table type display device according to the present invention, and FIG. 2 is a functional block diagram thereof. The apparatus according to the present embodiment is called a so-called collaboration table or a collaboration table having both an image display function and an image capturing function, and is structurally mainly a top plate 21 and a casing that is an apparatus main body. 47. The top plate 21 has a disk shape, and the casing 47 has a cylindrical shape. These are concentrically combined so that a plurality of people can gather around the table without making the table surface too large. is there.
[0023]
The top plate 21 is made of, for example, a transparent member such as polycarbonate or glass, and is almost entirely covered with a screen member 11 such as a transmission screen having excellent diffusibility. Then, a rear projection display unit 49 is provided in a substantially central part or in the vicinity of the central part, and the transparent window part for photographing 48 is formed without being provided with the screen member 11 in a part of the peripheral part, so that the photographing transparent window part 48 is formed. A part of the peripheral edge on the opposite side is also provided as the transparent window 50 for operation without being provided with the screen member 11 and remains transparent. Further, it is preferable that the surface of the top plate 21 is subjected to Teflon (registered trademark) processing so that characters, figures, etc. can be written with a dry marker for whiteboard.
[0024]
Furthermore, the top plate 21 has a large diameter so that the peripheral edge protrudes outward from the casing 47, and a keyboard 25 and a mouse (not shown) are disposed on the casing 47 at a portion located below the transparent window 50 for operation. A first upper substrate 26a for placing operation means such as For this reason, the keyboard 25 etc. on the 1st upper board | substrate 26a can be seen through the top plate 21. FIG. A second upper substrate 26b is provided on the side opposite to the first upper substrate 26a in the radial direction of the housing 47, and a handle 24 for rotating and moving the housing 47 is provided on both the substrate portions 26a and 26b. It is. The handle 24 is for grasping and operating when rotating the entire portion above the base substrate 40 described later. Note that the first upper substrate 26a and the second upper substrate 26b may not be separately provided as in the illustrated embodiment, but may be provided in an annular shape surrounding the entire circumference of the housing 47. This is convenient because there is a space for people around the device to place documents and belongings. Further, if a pen holder, a marker holder, or the like is provided on the first upper substrate 26a or the second upper substrate 26b, it is convenient to immediately place the pen on the top plate 21 when not in use. As the pen holder, the marker holder, etc., it is easy to take out a recess or groove, particularly a recess or groove having a triangular cross section, and it is easy to prevent it from dropping easily when the device is rotated.
[0025]
The casing 47 forms a bottom surface portion with the lower substrate 36 and the base substrate 40 on the upper side, covers the side with a side plate 28 fixed to the base substrate 40 so that external light does not enter inside, and shields the lower substrate. A hollow rotary shaft 34 passes through the center of the base plate 40 and 36. The top plate 21 is fixed on the side plate 28 with screws 44. If the side plate 28 is divided into a plurality of pieces in the circumferential direction of the housing 47, it is convenient for the internal inspection of the housing 47, etc. You can also. In addition, it is preferable to form at least the outer surface of the side plate 28 with a soft material, because it is possible to prevent accidents such as people who gather around the apparatus hit their legs and get injured.
[0026]
The hollow rotary shaft 34 is fixed to the base substrate 40 with screws 33, and a retaining member 35 is provided below the lower substrate 36 to prevent the retaining member 35 from coming off. A ball bearing 31 and a ball guide 32 fixed to the lower substrate 36 are provided between the base substrate 40 and the lower substrate 36 in order to prevent the ball bearing 31 from being removed from a predetermined position. Therefore, the base substrate 40 can smoothly rotate on the lower substrate 36. For this reason, people around the device can easily rotate in the direction they want to point, for example, in the direction in which the rear projection display unit 49 comes to the front of the user, in order to write on the rear projection display unit 49 with a marker or the like. It is possible to make it.
[0027]
In addition, a plurality of casters 37 with locks are provided on the lower substrate 36 of the housing 47 so that the entire apparatus can be moved. Therefore, the apparatus according to the present embodiment is not only easily moved by the caster 37 with the lock, but also does not increase in size by combining the disk-shaped top plate 21 and the cylindrical housing 47 concentrically as described above. In many cases, the entrance / exit is not an obstacle when moving.
[0028]
However, in order to reduce the weight of the apparatus as much as possible during movement and to reduce the outer size as much as possible, the top plate 21 can be removed as shown in FIG. In the figure, 44a is a screw hole. If necessary, the side plate 28 can be removed. If the portion above the lower substrate 36 rotates during movement, the movement becomes inconvenient. Therefore, by inserting the rotation stop pin 38 from above the base substrate 40 into the lower substrate 36, the base substrate 40 and the lower substrate are separated. 36 can be fixed so that it cannot be rotated.
[0029]
In addition to the movement, when the portion above the lower substrate 36 rotates, the power cord 30 led out through the hollow rotating shaft 34 may be twisted. Therefore, the one-turn prevention stopper 29 fixed to the base substrate 40 and the fixed stopper 39 fixed to the lower substrate 36 are provided so as to come into contact when the housing 47 makes almost one rotation, and the housing 47 cannot rotate more than one rotation. (See FIG. 5).
[0030]
A projector 45 is provided inside the casing 47, and the rear projection display unit 49, which is a part of the portion covered with the screen member 11 as described above, is a part where an image is projected by the projector 45. Further, inside the housing 47, a large mirror 27 that folds the projection of the projector 45 to the rear projection display unit 49, a CCD camera 42 that photographs the rear projection display unit 49 from the back through the large mirror 27, and a photographing optical path of the CCD camera 42. The small mirror 43 and the mirror rotating motor 23 that change the image to enable the photographing transparent window 48 to be photographed, the fluorescent lamp 22 that illuminates the photographing transparent window 48 from the back, and the shutter for blocking the projection of the projector 45 41, a personal computer (hereinafter simply referred to as a PC) 46 for performing image output for projection and input / output of control signals is provided. The power cord 30 for supplying power to each device is connected to each device through the hollow rotary shaft 34 as described above.
[0031]
The apparatus according to the present embodiment basically displays the display screen of the PC 46 on the screen member 11, specifically, the rear projection display unit 49. That is, the display screen of the PC 46 is emitted from the projector 45, projected through the large mirror 27, and projected on the rear projection display unit 49. The CCD camera 42 takes a picture of the direction of the photographing transparent window 48 from the inside of the housing 47, sends the photographed image to the PC 46, and projects it on the rear projection display 49 by the projector 45 in the same manner as described above. Therefore, people in the vicinity of the apparatus of the present embodiment can see such an image from the periphery of the top board 21.
[0032]
The fluorescent lamp 22 is arranged so as to illuminate the shooting window 48 from the inside of the housing 47, and not only on the document or book document placed on the shooting window 48 but also on the shooting window 48. A subject such as a three-dimensional object located on the photographing window 48 can be illuminated even when placed or separated, and the CCD camera 42 can obtain a good image. More specifically, when the window photographing start signal is input to the PC 46 from the operation switch 51, the fluorescent lamp 22 is turned on, the mirror rotating motor 23 is rotated, and the small mirror 43 is rotated. The axis is directed to the shooting window 48, and an image of the subject in that direction is shot, and the image is transferred to the PC 46. The PC 46 projects the transferred image by the projector 45 and displays it on the rear projection display unit 49. Of course, it is possible to display only an image obtained by photographing using the photographing window 48 without displaying the display screen of the PC 46.
[0033]
Further, the CCD camera 42 is a character or figure drawn with a marker or the like on the rear projection display unit 49, or a three-dimensional object located on the photographing window unit 48 even if it is placed on the rear projection display unit 49 or away. You can also shoot subjects. However, when the projector 45 is projected on the rear projection display unit 49, the image and reflection components reach the CCD camera 42, and the retouched image is buried in them and cannot be photographed well. Therefore, the shutter 41 is closed and the projector 45 is closed. The projected image does not reach the rear projection display unit 49.
[0034]
That is, when a screen shooting start signal is input to the PC 46 from the operation switch 51, the shutter 41 is first closed, the mirror rotating motor 23 is rotated and the small mirror 43 is rotated, and the shooting optical axis of the CCD camera 42 is set to the large mirror 27. For example, a retouched image on the rear projection display unit 49 is captured, and the image is transferred to the PC 46. For example, the PC 46 synthesizes the screen projected on the rear projection display unit 49 and the photographed image, projects the synthesized image by the projector 45, and displays it on the rear projection display unit 49. For example, as shown in FIG. 3, from the state (FIG. 3A) in which there is an image 60 handwritten on the rear projection display unit 49, the shutter 41 is closed as described above, and this image (FIG. 3B) is captured. The shutter 41 is combined into another window of the PC 46 as a window of the PC 46 and displayed on the rear projection display unit 49, or only the photographed image is enlarged and displayed on the rear projection display unit 49. FIG. ) Can be stored as electronic data in a memory or the like. The portion other than the image 60 written by handwriting in FIG.
[0035]
In this embodiment, for example, as shown in FIG. 4, an image of the document 9 placed on the shooting window 48 is taken, and this is combined as a single window of the PC 46 so as to fit into another application screen. Thus, the image can be displayed on the rear projection display unit 49 (FIG. 4B), or only the photographed image of the document 9 can be enlarged and displayed on the rear projection display unit 49 (FIG. 4C). Of course, the composite display content shown in FIG. 4B can be stored as electronic data by the PC 46 in a memory or the like. Note that 9a in FIG. 4B indicates a composite image of the photographed image of the document 9. 4C shows an enlarged image of the photographed image of the document 9.
[0036]
FIG. 6 is a schematic perspective view (A) and a functional block diagram (B) showing a second embodiment of the table type display device according to the present invention. The apparatus according to the present embodiment is obtained by omitting the function of photographing characters, figures, and the like drawn on the rear projection display unit 49 by the CCD camera 42 from the previous embodiment. That is, the CCD camera 42 photographs the direction of the photographing transparent window 48 from the inside of the housing 47, transmits the image to the PC 46, and causes the projector 45 to display the rear projection display unit 49. Since other configurations are the same as those of the first embodiment, description thereof will be omitted.
[0037]
The operation of the present embodiment will be described with reference to a block diagram (FIG. 6B). When a window photographing start signal is input to the PC 46 from the operation switch 51, the fluorescent lamp 22 is turned on, and the CCD camera 42 captures an image. Transfer the image. The PC 46 projects the transferred image by the projector 45 and displays it on the rear projection display unit 49. Other operations are almost the same as those in the first embodiment.
[0038]
FIG. 7 is a schematic perspective view (A) and a functional block diagram (B) showing a third embodiment of the table type display device according to the present invention. The apparatus according to the present embodiment is configured such that the CCD camera 42 omits the function of photographing characters, figures, and the like drawn on the rear projection display unit 49 and realizes this function with another CCD camera 10. . That is, the first CCD camera 42 photographs the direction of the photographing transparent window portion 48 from the inside of the casing 47, transmits the image to the PC 46, and causes the projector 45 to display the rear projection display portion 49. Since other configurations are the same as those of the first embodiment, description thereof will be omitted.
[0039]
The operation of the present embodiment will be described with reference to a block diagram (FIG. 7B). When a window photographing start signal is input to the PC 46 from the operation switch 51, the fluorescent lamp 22 is turned on, and the first CCD camera 42 captures an image. Transfer the image to The PC 46 projects the transferred image by the projector 45 and displays it on the rear projection display unit 49. When a screen shooting start signal is input to the PC 46 from the operation switch 51, the shutter 41 is first closed, and the second CCD camera 10 takes an image and transfers the image to the PC 46. The PC 46 synthesizes the currently projected screen and the image, projects it with the projector 45, and displays it on the rear projection display unit 49.
[0040]
FIG. 8 is a schematic perspective view (A) and a functional block diagram (B) showing a fourth embodiment of the table type display device according to the present invention. In the apparatus of this embodiment, the direction of the photographing optical axis of the CCD camera 42 is not changed by the mirror rotation motor 23 and the small mirror 43 but is changed by using the rotation motor 13.
[0041]
The operation of the present embodiment will be described with reference to a block diagram (FIG. 8B). When a window shooting start signal is input to the PC 46 from the operation switch 51, the fluorescent lamp 22 is turned on, the rotary motor 13 is rotated, and the CCD camera 42 The photographing optical axis is directed toward the photographing transparent window portion 48, an image of a subject in that direction is photographed, and the image is transferred to the PC 46. The PC 46 projects the transferred image on the projector 45 and displays it on the rear projection display unit 49. When a screen shooting start signal is input from the operation switch 51 to the PC 46, the shutter 41 is closed, the rotary motor 13 rotates, the shooting optical axis of the CCD camera 42 is directed toward the large mirror 27, and the rear projection display unit 49. The above retouched image is taken and transferred to the PC 46. The PC 46 synthesizes the currently projected screen and the image, projects it with the projector 45, and displays it on the rear projection display unit 49.
[0042]
Of course, the size of the table surface, that is, the diameter of the top plate 21 may be determined in consideration of the number of people gathered around. For example, a diameter of several tens of centimeters or less would be sufficient if a few people are gathered. Of course, if the diameter of the top plate 21 is large, the number of people gathered in the surrounding area will increase. However, since it is desirable that all members can access the rear projection display unit 49 and the like evenly, it is desirable to use them. It is preferable to determine the diameter of the top plate 21 in consideration of the above.
[0043]
【The invention's effect】
As described above, the table-type display device according to the present invention can be handwritten on the image display unit using a marker pen or the like, so that images written by handwriting, materials such as books, fingers and hands, etc. The shadows can be converted to electronic data on the spot, and can be displayed as an image, and the people gathered around can discuss and discuss while writing.
[0044]
As described above, the table-type display device according to the fourth aspect allows the operation device such as a keyboard to be placed below the top plate. In addition to the above-mentioned common effects, the top surface of the top plate serving as the table surface can be used widely. There is an effect of becoming.
[0045]
As described above, the table-type display device according to claim 5 can visually recognize the operating device through the transparent portion of the top plate. Therefore, in addition to the same effect as the device of claim 4, the operability is improved. There is.
[0046]
As described above, the table type display device according to claims 6 to 8 has a circular top plate, Case Since the body is cylindrical, in addition to the effects common to the devices of each claim, there is an effect that people can easily gather around the table without making the table surface too large.
[0047]
As described above, the table-type display device according to claim 9 is a top plate. Case By allowing the body and the body to be rotated horizontally, there is an effect that everyone can access the table surface almost equally, in addition to the effects common to the apparatus of each claim.
[Brief description of the drawings]
FIG. 1 is a perspective view (A) and a schematic sectional view (B) showing a first embodiment of a table type display device according to the present invention.
FIG. 2 is a functional block diagram of the same.
FIG. 3 is a diagram illustrating a display example of the handwritten image and a synthesis example.
FIG. 4 is a diagram illustrating an example of photographing, displaying, and synthesizing the original image.
FIG. 5A is a perspective view showing an exploded structure of the top board, and FIG. 5B is a plan view showing a stop operation during rotation.
FIG. 6 is a schematic perspective view (A) and a functional block diagram (B) showing a second embodiment of a table type display device according to the present invention.
FIG. 7 is a schematic perspective view (A) and a functional block diagram (B) showing a third embodiment of a table type display device according to the present invention.
FIG. 8 is a schematic perspective view (A) and a functional block diagram (B) showing a fourth embodiment of a table type display device according to the present invention.
[Explanation of symbols]
9 Manuscript
9a Original image
9b Enlarged image of original image
10 CCD camera
11 screen members
13 Rotating motor
21 top plate
22 fluorescent lamps
23 mirror rotation motor
24 handles
25 keyboard
26a first upper substrate
26b second upper substrate
27 large mirrors
28 side plate
29 One rotation prevention stopper
30 power cord
31 ball bearing
32-ball guide
33 screws
34 hollow rotating shaft
35 retaining
36 lower substrate
37 Caster with lock
38 rotation stop pin
39 fixed stopper
40 base substrate
41 shutter
42 CCD camera
43 small mirror
44 screws
44a is a screw hole
45 projector
46 personal computers
47 cases
49 Rear projection display
48 transparent window for shooting
50 operation transparent window
51 operation switch
60 handwritten images
61 Personal computer display image

Claims (9)

And having an image display unit, a top plate comprising at least the image display unit, formed by the transparency member,
A housing for holding the top plate on the upper surface;
Projecting means for projecting an image from below the top plate to the image display unit;
Imaging means for the body or those ones placed on the image display unit is drawn on the image display unit, photographed through the image display unit,
Means for blocking light projection by the projection means when photographing is instructed to the imaging means,
It said projection means, said imaging means, the table-type display device comprising a means for blocking the projection light to become disposed in the housing unit. In table type display device according to claim 1, wherein the top plate has a transparent window for imaging, a second imaging means for the body material located in said photographing transparent window portion on the photographing through the photographic transparency window table type display apparatus characterized by including prior Symbol housing portion. 2. The table-type display device according to claim 1, wherein the top plate has a transparent window for photographing, and the imaging means is drawn on the image display unit or placed on the image display unit. a first photographing condition for photographing the body through the image display unit, a switching means for switching the body material placed on the photographic transparent window portion on the second imaging condition for photographing through the photographic transparency window table type display apparatus characterized by including prior Symbol housing portion. In any of the table type display device of claims 1 to 3, and characterized by being provided it can be placed flat portion an operating device for at least a keyboard or the like positioned below the top plate before Symbol housing Table-type display device. 5. The table type display device according to claim 4, wherein the flat portion corresponding portion of the top plate is formed to be transparent. In any of the table type display device of claims 1 to 5, before Symbol top plate is circular, arranged before Symbol image display unit in the vicinity of substantially the center or central portion of the top plate, before Symbol housing cylinder has the form, before Symbol table type display device of the top plate, characterized by comprising arranging concentrically with said housing. In any of the table type display device of claims 2 to 5, before Symbol top plate is circular, a substantially central portion or near the central portion before Symbol image display section of the top plate, the peripheral edge of the front Symbol ceiling plate arranged before Symbol transparent window for imaging, before Symbol apparatus main body has a cylindrical, pre-Symbol table type display device of the top plate, characterized by comprising arranging concentrically with said housing. In table type display device according to claim 5, before Symbol top plate is circular, a substantially central portion or the central portion before Symbol image display unit in the vicinity of the top plate, transparent for pre Symbol photographing the periphery side of the front Symbol ceiling plate disposing a transparent portion corresponding to the window portion and the front Symbol plateau before Symbol housing has a cylindrical, pre-Symbol ceiling plate a table type display, characterized by comprising arranging concentrically with said housing apparatus. 9. The table type display device according to claim 1, wherein the top plate and the casing can be horizontally rotated integrally around a vertical axis.

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