JP2002023674A - Tile type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tile type display device in which visibility in the oblique direction with respect to the screen is improved and the effect for advertisement is significantly improved. SOLUTION: A liquid crystal display device 3 connected to a personal computer 9 is embedded in a road 1 and the liquid crystal display device 3 is covered with a reinforced glass case 6 with the upper face of the case 6 keeping the same level as the road 1. A lens part having a gradually increasing index nearer to both sides of the liquid crystal display device 3 is formed in the lid of the case 6 so that the beams emitted from the liquid crystal display device 3 gradually splay near the periphery of the device to form a hemisphere viewing range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tile type display device which displays an image on a road surface, a ceiling surface or a wall surface and is used as a medium for an advertisement or the like.

[0002]

2. Description of the Related Art At present, display devices used for advertisements and the like are widely used, from small wall-mounted display devices to large display devices installed on the walls of buildings on the streets. These conventional display devices are all viewed at a height similar to or higher than the pedestrian's line of sight.

[0003]

By the way, people often look down unconsciously. Therefore, the conventional display device cannot be seen unless a person intentionally looks at it. Further, the conventional display device has poor visibility from an oblique direction, and the image looks distorted as if it were compressed. For this reason, the advertising function of the display device may not be sufficiently exhibited. The present invention has been made in view of the above problems, and an object of the present invention is to provide a tile-type display device in which visibility in an oblique direction is improved, and an advertising effect is dramatically improved. is there.

[0004]

Therefore, a tile-type display device according to a first aspect of the present invention provides an image display device connected to image control means such as a personal computer on a floor surface, a road surface, a ceiling surface, or a wall surface. It is characterized by being buried.

According to a second aspect of the present invention, in the tile type display apparatus according to the first aspect, visibility is improved by controlling application software installed in a personal computer.

Further, according to a third aspect of the present invention, in the tile type display device, an image display connected to image control means such as a personal computer is provided on a floor, a road, a ceiling, or a wall, and the image display is provided with an inclined surface. A lens unit for securing a visual field from an angle is provided, and the lens unit is provided so as to be flush with the floor surface, road surface, ceiling surface, or wall surface.

According to a fourth aspect of the present invention, in the tile type display apparatus according to the third aspect, the refractive index of the lens portion is set so as to gradually increase from the inner side to the outer peripheral side. The light beam emitted from the vessel is diffused as it travels outward.

According to a fifth aspect of the present invention, there is provided the tile type display device according to the third or fourth aspect, wherein a plurality of image displays are provided in the lens unit to provide visibility from a plurality of directions. Is improved.

According to a sixth aspect of the present invention, in the tile type display apparatus according to the first to fifth aspects, the display form of video content and / or audio content is converted and controlled / managed. A control unit having an application program to be installed is provided between image and / or sound control means such as a personal computer and an image display and / or sound output device.

Further, the tile type display device according to claim 7 is the tile type display device according to claim 6, wherein an advertisement OS for managing advertisement contents and a vision system OS for managing a control unit.
Is mounted on image control means such as a personal computer.

In the present invention, the display screen of the liquid crystal display is set and controlled by a personal computer or a video deck, and the control means and the liquid crystal display may be connected cordlessly. For example, when the liquid crystal display is installed on a horizontal surface such as a floor or a road surface, the liquid crystal display is installed in a flat state such that the upper surface of the liquid crystal display is exposed on the floor or the road surface. The contents of the display screen are mainly store advertisements, events, television broadcasts, movies, direction instructions, traffic information, weather disaster information, and the like, but may be other transmission information. For example, it may be one that guides a person by a band-shaped graphic flowing in a certain direction or an image of a swimming fish.

[0012] Also, pseudo-stereoscopic images (so-called 3D images) are created by application software to be introduced into a personal computer so that the images stand up from a horizontal plane, or images with a wide depth are displayed, and the images are displayed in an oblique direction. May be improved. The installation location of the display device of the present invention is not particularly limited, and it is not limited to a retail store, a convenience store, a department store, a hotel, a game center, an airport building, a station building, an office building, a community space, a vehicle road, a promenade, an apartment, a meeting place, and a school. It can be widely installed on floors, roads, ceilings, or walls of hospitals, government buildings, vehicles, ships and the like.

The display device of the present invention may be installed three-dimensionally from the floor surface to the wall surface (that is, from the horizontal plane to the vertical plane). For example, it is installed on a plurality of surfaces or on the entire inner surface (floor surface, ceiling surface, wall surface) of a closed space such as a room of a condominium or a narrow passage, and a pseudo-realistic image of a natural scenery (so-called virtual reality). (Video) may be displayed.

The size of the liquid crystal display is desirably set on the basis of architectural tiles, and the final size is determined on the assumption that several tiles are combined into one display screen size. . The entire liquid crystal display can be housed in a sturdy glass case in a watertight manner, so that the liquid crystal display can be installed in water in a pool or an aquarium. The sturdy structure of the case can withstand considerable weight and prevent damage due to impact. Also, in the upper lid part of the glass case,
A lens is formed from a special transparent material, and this lens portion is a portion through which display light from the liquid crystal display passes.

The refractive index of the lens is set to be continuously different as it goes to both sides of the lens, so that the emitted light beam spreads in a hemispherical shape as it goes away from the liquid crystal display. That is, the refractive index of the lens is determined depending on where the reference of the distance from the light emitting unit at the viewpoint height position is set. In connection with this, the size of each lens, the angle between the light emitting unit and the lens axis, and the like are determined, and the distance from the light emitting unit to the road surface is determined. As a specific method of setting the refractive index, there is a method of preparing a plurality of lenses having different thicknesses or lenses having different refractive indexes (materials), and combining these lenses integrally. Of course, as long as the components such as the refractive index satisfy the condition that can be integrally connected, a uniformly continuous lens structure may be used. It should be noted that, depending on the configuration of the lens, it is possible to enlarge the image size and display it by making it function as a magnifying (condensing) lens.

Also, a plurality of image displays may be provided in the lens unit to display images having directivity in a plurality of directions. For example, when a guidance display of an amusement park or an assembly store is performed, a specific image (for example, guidance information in the traveling direction) is visually recognized when viewed from a specific direction of front, rear, left, and right. The image may be made visible. In the present invention, an audio output device can be integrally installed together with the liquid crystal display device. In particular, the volume is measured for a road surface space, and the display is provided by adding compactness, strength, and durability corresponding to the numerical value. It can be an integrated speaker.

As shown in FIGS. 9 and 10, it is desirable that the viewing range of the display device of the present invention is 360 degrees so that it can be viewed evenly from all directions. For this purpose, the liquid crystal display is set so as to be within the field of view of a person from the point where the person enters the circumference of a radius of 7 meters. Be able to recognize speech.

For example, when recognizing a screen displayed by a display device placed on a horizontal plane from a viewpoint moving on the horizontal plane, it is more difficult to recognize the display screen as the viewpoint becomes farther due to a change in the viewing angle accompanying the movement. become.
This occurs because images arranged in the vertical direction of the field of view are compressed in the vertical direction according to the change in the viewing angle. By the way, since the light emitted from the light emitting portion shows straightness, refracting this light through a lens arranged on the light emitting surface side of the display device solves the problem of image compression.

When a person passes on a road surface on which the display device is embedded, the liquid crystal display 2 enters the person's sight unconsciously.
Also, when viewing the liquid crystal display surface from an oblique direction, since the image on the liquid crystal display surface is refracted by the lens, the viewing angle with respect to the image increases, and the image is viewed from directly above without being compressed in the vertical direction. It is visually recognized in the same front image as that of FIG.

In particular, when a person arrives right above the liquid crystal display 2, a three-dimensional space is associated with the refraction effect of the lens, and a realistic sense of reality can be experienced by both eyes and hearing.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a cross-sectional view showing a display device according to the present invention, FIG. 2 is an overall system diagram showing the display device and image control means, and FIG. FIG. 4 is a conceptual diagram of the operation, and FIG. 4 is a conceptual diagram of the operation for explaining a case where the light beam from the light emitting unit is obliquely incident on the lens unit.
6A and 6B are conceptual explanatory views showing a visual field range within a predetermined distance from the light emitting section, and FIGS. 6A and 6B are conceptual explanatory views showing an example in which the light emitting section and the lens section are arranged in a single direction. (B),
8C is a conceptual explanatory view showing an example in which a light emitting unit and a lens unit are arranged bidirectionally, and FIGS. 8A and 8B are conceptual explanatory views showing an example in which a light emitting unit and a lens unit are arranged in four directions. FIG. 9 is a conceptual plan view illustrating a view range of the display device, and FIG.
Is a sectional view of FIG. 9, and FIG. 11 is a system block diagram of the display device of the present invention.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes a road surface (floor surface) such as a shopping street or a department store where there are many pedestrians, and a liquid crystal display device 2 is embedded in the road surface 1. The liquid crystal display device 2 constitutes a part of a road surface tile and includes a liquid crystal display 3 as an image display means, and a sound board 4 and a speaker 5 arranged below and beside the liquid crystal display 3. ing. The sound board 4 and the liquid crystal display 3
Special tempered glass case 6 that is a sturdy waterproof box
The case 6 has a strength of 200
It is designed to be able to withstand even heavy objects weighing more than kg.

In FIG. 2, reference numeral 7 denotes a control room provided near the liquid crystal display device 2. In the control room 7, a personal computer 9 having an input / output unit 8 and an AV device 10 are arranged. . The personal computer 9 functions as a driving unit for image control, and is connected to the liquid crystal display 3 via a pin code fiber (communication line) 11. Further, the AV device 10 as the audio control driving means is connected to the speaker 5 via the pin code fiber 12. Thus, each character image signal and audio signal sent from the personal computer 9 and the AV device 10 can be output through the liquid crystal display 3 and the speaker 5, respectively.

Next, the detailed structure of the liquid crystal display 3 will be described. As shown in FIG. 1, reference numeral 13 denotes a pair of upper and lower glass substrates, and the periphery of the pair of glass substrates 13 is airtightly bonded with a sealing material (not shown). A spacer 14 is interposed between the pair of glass substrates 13 and a liquid crystal layer 15 is formed. A pair of polarizing plates 16 are provided on both the upper and lower sides of the glass substrate 13.
Are in phase with each other by 90 degrees.

The liquid crystal layer 15 is provided below the lower polarizing plate 16.
, And a fluorescent tube 18 facing one end of the light guide plate 17 are provided. The light emitted from the fluorescent tube 18 travels straight toward the liquid crystal layer 15 via the light guide plate 17. The upper surface of the upper polarizing plate 16 is covered with a lid 6a of the case 6, and the lid 6a of the case 6 is formed with lens portions a to d having different refractive indexes continuously.

The lens section a is placed horizontally, and the liquid crystal display 3
The light from the head travels vertically upward. The lens portion b adjacent to the lens portion a corresponds to the light that has traveled straight from the liquid crystal display 3 at an angle α, and the lens portion b is positioned so that the light reaches each predetermined position at the viewpoint height EL. The refractive index of b is set. Similarly, the lens portions c and d successively adjacent to the lens portion b correspond to light that has traveled straight from the liquid crystal display 3 at a predetermined inclination angle β, and this light reaches each predetermined position of the viewpoint height EL. Thus, the refractive indices of the lens units c and d are set.

That is, the refractive indices of the lens portions a to d gradually increase toward both sides of the liquid crystal display 3 so that the light emitted toward the outer periphery of the liquid crystal display 3 gradually expands. The upper polarizing plate 16 serves as a light emitting unit 19 for the lens units a to d as shown in FIG.

Next, the operation of the present embodiment will be described with reference to FIGS. First, when the light from the light emitting unit 19 is perpendicularly incident on the lens units a to d, as shown in FIG. 5, a person passing directly above the liquid crystal display 3 displays the display screen as it is through the lens unit a. Visible. On the other hand, a person passing through a place distant from the liquid crystal display 3 has a poorer visibility on the display screen as the distance increases. However, in this case, since the oblique direction lens portions b to d are provided on one side of the lens portion a for the upward direction, the light beam from the light emitting portion 19 is refracted and proceeds so as to spread to the left and right sides. For this reason, even if a person is about 7 m away from the liquid crystal display 3 and looks at the display screen from an oblique direction, the image on the display screen is not compressed in the vertical direction, and as if viewed from directly above the front. Visible.

By the way, the lens arrangement of FIG. 3 has a disadvantage that the distance between the road surface height FL and the light emitting section 19 becomes long. Therefore, in order to shorten the distance between the road surface height FL and the light emitting unit 19, a description will be given of a lens arrangement in a case where a light beam from the light emitting unit 19 is obliquely incident on the lens units b to d. That is, as shown in FIG. 4, even if a person is about 7 m away from the liquid crystal display 3, the light beam from the light emitting unit 19 is refracted and spread through the lens units b to d as described above. Therefore,
The image can be clearly recognized as a normal planar image without compressive distortion in the image.

In short, even if a light beam is emitted from the surface of the light emitting portion 19 at an oblique angle (α, β) and is incident perpendicularly or obliquely to the lens surface, the light is refracted by the lens portions b to d. The range of the emitted light on the road surface 1 is expanded as the light travels to the outside. Therefore, a person whose distance from the liquid crystal display 3 is within a radius R = 7 m changes the display screen in any direction within a range from the road surface height FL to the viewpoint height EL of H = 1.60 to 1.70 m. It can be easily recognized even from

Next, the positional relationship between the light emitting portion 19 of the liquid crystal display 3 and the lens portions a to d will be described. The number and arrangement of these can be of various types. 6 to 8 show specific examples. FIGS. 6A and 6B show the light emitting unit 1.
9 and four sets of lens parts a to d are separated from each other and are provided at 90-degree intervals in the circumferential direction. A plurality of display screens "A" are individually kept facing forward from the cross direction. Is visually recognized. FIG. 7A, FIG. 7B or FIG.
Makes two sets of the light emitting part 19 and the lens parts a to d adhere to each other,
It is of a bidirectional arrangement type provided in opposite directions on a straight line in the horizontal or vertical direction, and the display screen “A” is visually recognized as a pair of facing faces from both sides in the linear direction. Further, FIG.
(A) and (B) show four sets of four display screens “A” provided at one 90-degree circumferential direction on one light-emitting part 19 by bringing one set of the light-emitting part 19 and the lens parts a to d into close contact with each other. The display screen "A" is visually recognized from any cross direction.

As shown in FIG. 11, according to the present invention, a control unit 20 equipped with an application program for converting and controlling the display form of data of video contents and audio contents is mounted on a personal computer 9 and a liquid crystal display device (image display device). Device 2) and a speaker (sound output device) 5 to control the display device 2 and the speaker 5 by mainly converting data of image / sound contents into a target display form. .

The personal computer 9 is equipped with an advertising OS for managing advertising contents and a vision system OS for managing a control unit. Each advertising content is filed in a file format determined by the advertising OS, and the advertising OS manages the files (recognition of the file format, arrangement of data, and data for interfacing with the control unit). Conversion).

The control unit 20 is provided with a display AP which is an application program for controlling and managing a video and audio monitor. The control unit 20 includes an image / audio data file sent by the vision system OS and a vision system OS. The setting data of the various functions set in step (1) is controlled and managed by this, and the video / audio data is reproduced based on the contents of the various setting functions. Further, when a problem occurs (when an image becomes insufficient or current consumption increases), status information is transmitted to the vision system OS. Specifically, the OS for advertising and the system OS for vision are Windows, M which are OSs of the personal computer 9 in consideration of versatility.
The display AP is programmed in the C language, and the corresponding microcomputer is programmed in the program area F corresponding to acOS, Linux, etc.
If it is a lash type, this program can be installed there using a dedicated tool (a C compiler of a microcomputer, a program writing tool, etc.).
In addition, by mounting a video card on the personal computer 9, V
It is also possible to monitor video data such as TR.

The present invention is not limited to the above embodiment.
In the above embodiment, the display device is embedded on a flat road surface. However, the display device can be embedded on an inclined road surface. Further, the liquid crystal display may be installed alone or a plurality of these may be arranged to form a matrix. The installation location of the display device is not particularly limited, and it is a retail store, a convenience store, a department store, a hotel, a game center, an airport building, a station building, an office building, a community space, a vehicle road, a promenade, an apartment, a meeting place, a school, a hospital. Needless to say, it can be widely installed on floors, roads, ceilings or wall surfaces of government buildings, vehicles, ships and the like. In addition, switching is performed by a sensor that detects the approach of a person, so that the display and sound output of the image are controlled, a sensor that detects the pressure generated by stepping on the foot or pressing with a finger is added, and the image is added. The information may be changed or desired information can be selectively displayed.

[0036]

As described above, the present invention has the following excellent effects. (1) Since the liquid crystal display surface is unconsciously put into the view of many passers-by, the advertisement function of the display device is dramatically increased. (2) The luminous flux from the display screen spreads widely around the radial direction due to the refraction of the lens unit, so that even a person passing 6 to 7 meters away from the display device can clarify a normal image without distortion from any direction. Can be visually recognized. (3) A control unit equipped with an application program for converting and controlling the display format of video content and audio content data is provided between a personal computer, a liquid crystal display device (image display device) and a speaker (audio output device). The display and the speaker are controlled by converting the data of the image and sound contents to the desired display form, so that it is possible to support various OSs of personal computers, and the versatility of the whole device is improved. high.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a display device according to the present invention.

FIG. 2 is an overall system diagram showing a display device and image control means.

FIG. 3 is an operation conceptual diagram illustrating a case where a light beam from a light emitting unit is perpendicularly incident on a lens unit.

FIG. 4 is an operation conceptual diagram illustrating a case where a light beam from a light emitting unit is obliquely incident on a lens unit.

FIG. 5 is a conceptual explanatory diagram showing a visual field range within a predetermined distance from a light emitting unit.

FIG. 6 is a conceptual explanatory view showing an example in which a light emitting unit and a lens unit are arranged in a single direction.

FIG. 7 is a conceptual explanatory view showing an example in which a light emitting unit and a lens unit are arranged bidirectionally.

FIG. 8 is a conceptual explanatory view showing an example in which a light emitting unit and a lens unit are arranged in four directions.

FIG. 9 is a conceptual plan view illustrating a view range of a display device.

FIG. 10 is a longitudinal sectional view of FIG. 9;

FIG. 11 is a system block diagram of a display device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road surface 2 Liquid crystal display device 3 Liquid crystal display 4 Sound board 5 Speaker (sound generator) 6 Tempered glass case 6a Case lid 7 Control room 8 Input / output unit 9 Personal computer (image control means) 10 AV equipment 11 Pin code Fiber 12 Pin code fiber 13 Glass substrate 14 Spacer 15 Liquid crystal layer 16 Polarizing plate 17 Light guide plate 18 Fluorescent tube 19 Light emitting unit 20 Control unit a Lens unit b Lens unit c Lens unit d Lens unit

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kawa ▲ saki ▼ Kiyoto 569-3 Minamitakanabe, Takanabe-cho, Koyu-gun, Miyazaki Prefecture F-term within the joint-stock company Kawa ▲ saki ▼ Electricity F-term (reference) 5G435 AA00 BB12 DD02 EE27 EE33 FF05 FF08 GG01 GG02 GG21 GG24 HH02

Claims (7)

[Claims] 1. A tile type display device wherein an image display connected to image control means such as a personal computer is provided on a floor, a road, a ceiling or a wall. 2. The tile-type display device according to claim 1, wherein the visibility is improved by controlling application software installed in the personal computer. 3. An image display connected to image control means, such as a personal computer, is provided on a floor, a road, a ceiling or a wall, and a lens unit for securing a visual field from an oblique angle is provided on the image display. A tile-type display device, wherein the lens unit is provided so as to be flush with the floor surface, road surface, ceiling surface or wall surface. 4. The apparatus according to claim 1, wherein the refractive index of the lens portion is set so as to gradually increase from the inside toward the outer periphery, so that the light beam emitted from the image display device is diffused as it proceeds outward. Item 4. A tile type display device according to Item 3. 5. A plurality of image displays are provided in a lens unit,
The tile-type display device according to claim 3, wherein visibility from a plurality of directions is improved. 6. A control unit equipped with an application program for converting and controlling the display form of data of video content and / or audio content and controlling the image and / or audio control means such as a personal computer and an image display and / or an image display. The tile type display device according to claim 1, wherein the tile type display device is provided between the tile type display device and an audio output device. 7. An advertising OS for managing advertising content,
Vision system O for controlling the control unit
7. The tile type display device according to claim 6, wherein S is mounted on an image and / or sound control means such as a personal computer.