JPH11161216A - Image information display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image information display system, which is provided with an excellent eye-catching effect and a long apparatus life and can be run at low costs because of its energy saving performance. SOLUTION: An image information display system constructed of a transparent member 10, a hologram screen 11 stuck to the transparent member 10, and a projector 12 projecting image information to the hologram screen 11 is provided with a sensor 13 sensing an environment condition inside a visibility angle 15 of the hologram screen 11 and a controller 14 controlling the projector 12 on the basis of a signal from the sensor 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video information display system for presenting video information such as a moving image or a still image.

[0002]

2. Description of the Related Art Conventionally, as means for presenting video information composed of still images, moving images, etc. to passers-by and observers widely in a showroom or the like, a video information display comprising a screen and a supply device for supplying the video information to the screen. The system is being used. Specifically, video information recorded on video tapes, optical discs, slides, and the like is reproduced and presented using a display device such as a CRT or a liquid crystal panel connected to various reproducing devices such as a VCR, an LD player, and a projector. I was

[0003]

[Problems to be Solved] However, it is difficult to draw the attention and attention of passers-by and observers only with the video information that flows indiscriminately, and it is difficult to perform effective advertisement and publicity. That is, the eye catch effect was small.

Further, when using the video information display system, it is necessary to adjust the video information so that a passerby or an observer can easily see the video information. When the video information is difficult to recognize due to insufficient adjustment, the ability to appeal to passers-by and observers is weak,
It may be difficult to obtain a high eye catching effect. Since the adjustment value in this case depends on the environment in which the video information display system is installed, it is difficult to set the adjustment value in advance. Particularly, in the video information display system installed outdoors or in a part facing the outdoors, there is a problem that an optimal adjustment value changes every moment depending on time, weather conditions, and seasons.

Since the video information display system is used in a state where video information is always presented, the reproducing device and the display device are always in operation. Therefore, the power consumed by each of these devices is large, and there is a problem in energy saving and running cost reduction. In addition, there is another problem that the operating time of the reproducing device and the display device becomes longer, so that the life of these devices becomes shorter.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a video information display system which has an excellent eye catch effect, saves energy, has a low running cost, and has a long equipment life.

[0007]

According to a first aspect of the present invention, there is provided a transparent member, a hologram screen attached to the transparent member, and an irradiation device for irradiating the hologram screen with image information. An image information display system, comprising: a sensor for sensing an environmental condition; and a control device configured to control the irradiation device based on a signal from the sensor.

As the hologram screen, a transmission hologram screen can be used. Also,
As the hologram screen, a reflection hologram screen can be used.

Further, it is preferable to use a transparent hologram screen in order to further enhance the eye catch effect. Thereby, it is possible to configure so that a person can see the displayed product, the background and the like behind the hologram screen through the hologram screen. In addition, since it is possible to make a seemingly sudden appearance of image information in a seemingly empty space (actually, a transparent member and a hologram screen are installed), it is possible to draw a great deal of attention and attention from people. In addition, since it is possible to configure so as not to obstruct the field of view of a person, the degree of freedom of the video information display system can be increased.

As the transparent member, glass for a show window made of various kinds of glass and resin, rear glass and windshield of various moving bodies (automobiles, ships, airplanes, trains, etc.), construction of sales offices, retail stores and the like. Object window glass,
A transparent wall made of glass or plastic disposed around a room such as a guest room can be cited.

As the irradiation device, a slide projector,
Various devices such as an OHP (over head projector), a projector, a projector, and the like that can irradiate a still image, a moving image, and the like can be used. Also, image information can be supplied to the irradiation device from the outside. In this case, examples of the supply device include a reproducing device such as a video tape and an optical disk, and an information device such as a personal computer connected to the Internet.

It should be noted that the hologram screen cannot be seen unless image information (irradiation light) emitted from the irradiation device hits the hologram screen and is not within a conical space formed by diffraction and diffusion. There is a feature that can not. Therefore, the image information of the hologram screen can be viewed only in a region where the individual conical spaces formed by the image information (irradiation light) hitting each part of the hologram screen are overlapped. This area is the viewing angle. The details of the viewing angle will be described later.

Further, a plurality of video information display systems according to the present invention can be installed and used in cooperation with each other. In this case, the sensors of each video information display system can be separately provided (Embodiment 2), and the sensors can be shared with each other.

The operation of the present invention will be described below. An image information display system according to the present invention includes a sensor for sensing an environmental state within a viewing angle of a hologram screen, and a control device configured to control the irradiation device based on a signal from the sensor. This makes it possible to automatically change the image information from the irradiation device to the optimum one or stop the irradiation of the image information from the irradiation device according to the environmental state within the viewing angle.

For example, when the illuminance within the viewing angle is high,
By increasing the brightness of the video information or changing the video information to one having a higher brightness, it is possible to provide video information that is easy for humans to see. For example, when a human voice is detected within the viewing angle, it is considered that a person exists within the viewing angle, and the irradiation device can be activated to provide image information to the person.

As described above, according to the present invention, the state and type of video information are automatically changed in response to various environmental conditions that change from moment to moment within a viewing angle, or provision of video information is provided. Start and stop can be performed. Therefore, it is possible to provide video information having a high eye-catching effect that can sufficiently draw attention of a person.

Further, according to the present invention, since the irradiation device can be configured to automatically operate as required, the substantial operation time of the irradiation device can be shortened. Therefore, the power consumption of the irradiation device can be reduced, and the running cost can be reduced. Further, since the operation time of the irradiation device can be shortened, the life of the device can be extended.

As described above, according to the present invention, it is possible to provide a video information display system which has an excellent eye catch effect, saves energy, has a low running cost, and has a long equipment life.

Next, as in the second aspect of the present invention, it is preferable that the viewing angle is a region where the luminance is equal to or higher than K0 / 2 (K0 is a luminance value in front of the center of the hologram screen). Since the luminance is high within the viewing angle, the person can recognize the image information on the hologram screen as a bright and clear image. Therefore, it is possible to present video information having a high eye catching effect.

In the range where the luminance is less than K0 / 2, it is possible for a person to check the image information, but it may be difficult to check the contents of the image information. For this reason,
The eye catch effect may be reduced. The brightness of the hologram screen has the highest value at the center. The details of K0 and the viewing angle will be described later.

Next, it is preferable that the sensor is an illuminance sensor. This makes it possible to obtain a video information display system capable of presenting optimal video information corresponding to the brightness within the viewing angle.

Next, it is preferable that the video information display system has a speaker for providing audio information, and the sensor is a volume sensor. Thus, it is possible to obtain a video information system that can present audio information together with video information and that has an excellent eye catching effect.

Further, since the sound volume within the viewing angle can be sensed by the sound volume sensor, feedback control of the speaker becomes possible, and the audio information and the audio information can be provided as the optimum sound volume for the environmental condition. In this case, the operation of the speaker can be stopped to reduce the running cost of the device or prolong the life of the device.

Next, it is preferable that the sensor is configured to detect the entry of a person into the viewing angle as described above. Thus, it is possible to obtain an image information display system capable of activating the irradiation device to irradiate image information or switching image information when a person enters the viewing angle of the hologram screen.

Also, the hologram screen is inconspicuous,
It is difficult for a person to recognize a screen where no video information is displayed. For this reason, by using the present invention, it is possible to make it appear as if the video information suddenly appears in an empty space, and a high eye catching effect can be obtained.

Further, as described above, according to the present invention, it becomes possible to operate the irradiation device when a person enters the viewing angle. Therefore, the operation time of the irradiation device can be shortened, and power consumption and running cost can be saved. In addition, the life of the device can be extended.

As the sensor, an infrared sensor, a voice sensor, a vibration sensor, or a weight sensor provided on a floor or the like can be used. These sensors can be used alone or in combination of plural types.

It is preferable that the sensor not only detects that a person has entered the viewing angle but also that a person has left the viewing angle. Then, based on a signal from the sensor, the control device causes the irradiation device to radiate image information when a person enters the viewing angle, and stops the irradiation device when a person leaves the viewing angle. It is preferable to configure. Thereby, the effect of the present invention can be obtained more reliably.

Next, as in the sixth aspect of the present invention, the video information display system can be installed and used on a moving body. As described above, by using a transparent hologram screen, a transparent video information display system that does not obstruct the field of view can be obtained. Such a video information system has an effect that it is hardly hindered by driving or the like, and hardly obstructs viewing the state outside the moving body. For this reason, the video information display system according to the present invention is suitable for installation on a moving object.

The video information display system installed on the moving object can be used for displaying driving support information such as car navigation, displaying warning information outside the moving object, and the like. When the moving body is an automobile, it can be used as, for example, a display device for an occupant in a rear seat.

Next, according to a seventh aspect of the present invention, the video information display system includes at least two video information display systems provided on a moving body.
It is preferably installed between two seats. Thus, the hologram screen can be prevented from being directly exposed to direct sunlight, so that the hologram screen can be prevented from being deteriorated early. Specifically, discoloration and performance deterioration due to ultraviolet rays and deterioration due to heat from direct sunlight can be prevented.

Next, it is preferable that the hologram screen is configured to be able to be stored when not in use, as in the invention described in claim 8. As a result, the limited space inside the moving body can be effectively used. Further, by storing the battery when not in use, it is possible to further prevent the above-described discoloration and performance deterioration due to ultraviolet rays and deterioration due to heat from direct sunlight. Further, the construction work for the moving body can be facilitated. Specifically, it is preferable that the hologram screen is configured to be of a winding type, a folding type, and a detachable type.

Further, the hologram screen can be arranged on a sunroof surface. In this case, it is possible to configure so that the video information can be observed in the state of the full flat sheet. Further, as another configuration example, the hologram screen can be integrated (or buried) with a driver seat, a passenger seat, or a headrest (see FIG. 14 described later).
reference).

Next, as in the ninth aspect of the present invention, the sensor is a vibration sensor, and the control device detects a shake of the irradiation image information due to the vibration of the moving body based on a signal from the vibration sensor. It is preferable that the correction is made (see FIG. 15). According to a tenth aspect of the present invention, the sensor is a vibration sensor, and the control device suppresses the vibration of the irradiation device itself due to the vibration of the moving body based on a signal from the vibration sensor. Preferably, it is configured (see FIG. 16).

When installing various display devices on a moving body,
In particular, a structure in which image information is projected by an irradiation device has a problem that an image is blurred due to vibration of a moving body. This problem is prominent in large vehicles such as buses and trucks. According to the present invention, vibration is detected using a vibration sensor, and data constituting image information is electrically corrected based on the detected signal, and then the light is irradiated from an irradiation device, thereby correcting image blur. can do.

Alternatively, a mechanism for suppressing the vibration itself of the irradiation device is provided, and this mechanism is driven based on a signal from the vibration sensor to correct a blur of an image. According to these, it is possible to obtain a video information display device capable of seeing video information with little blur on a moving body.
In addition, as a device for absorbing the vibration of the irradiation device, a damper, a pierzo actuator, and the like can be given.

Next, as in the eleventh aspect of the present invention, the video information display system is preferably configured to be controlled by a central controller connected via a communication line.
Accordingly, when managing each video information display system, the central control device can collectively manage and operate the video information display systems, so that labor and labor can be saved.

As the above-mentioned communication line, a line such as a public line, a dedicated line or the like for voice communication (telephone line), a line such as an optical cable for moving image distribution used in a cable television or the like, or a satellite communication is used. Various communication lines can be used regardless of whether they are wired or wireless, such as lines using radio waves such as CS digital. In addition, the Internet or the like can be used.

The data of the video information to be irradiated can be placed on the video information display system side, but can also be placed on the central control device side. In this case, since the management of the video information can be performed collectively on the central control device side, the management cost can be reduced.

For example, when a new product presentation is held simultaneously at each branch, office, etc., the video information display system according to the present invention is arranged at each branch, office, etc., and the central control device is arranged at the head office, etc. Then, new product information can be distributed to various places from here. In this case, it is possible to save the trouble of previously delivering new product information to various places.

Similarly, for example, a video information display system can be installed at each affiliated store in a chain store or the like, and the central control device can be installed at the head office. As a result, the same effect as described above can be obtained. In addition, the product information can be updated only by updating the data of the video information set in the central control device, and the trouble of updating at each affiliated store can be eliminated. it can. In addition,
When the video information is stored in the central control device, it is preferable to use a high-speed line (such as a dedicated broadband line) as a communication line.

Next, as in the twelfth aspect of the present invention, the central control device obtains a signal from the sensor via the communication line, and controls the irradiating device based on the signal to control the hologram. It is preferable that the image information is irradiated on the screen. Thereby, the effect of the present invention can be reliably obtained.

Next, it is preferable that the hologram screen records a diffuser. Thus, an effect of transmitting a full-color image can be obtained.

[0044]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A video information display system according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG.
The image information display system 1 of the present embodiment includes a transparent member 10, a hologram screen 11 attached to the transparent member 10, and an irradiation device 12 for irradiating the hologram screen 11 with image information.

As shown in FIGS. 2 and 3, a sensor 13 for detecting that the person 8 enters the viewing angle 15 of the hologram screen 11, and the hologram screen based on a signal from the sensor 13. And a control device 14 configured to control the irradiating device 12 so as to irradiate the image information 11 with the image information.

FIG. 1 shows a showroom 20 in which the video information display system 1 according to the present embodiment is installed. The hologram screen 11 is of a transmission type,
The transparent member 10 attached is a window glass in the show room 20. Displayed products 21 are displayed behind the hologram screen 11. When the video information is not displayed, the displayed product 21 can be viewed through the hologram screen 11.

The principle of the transmission hologram screen will be briefly described. An irradiation device is arranged on the back side of a screen (hologram screen) composed of hologram elements, and the irradiation device irradiates image information. This video information forms an image on the hologram screen to form a real image. The transmitted light scattered and transmitted from the real image enters human eyes, so that the human can confirm the real image.

The sensor 13 is fixed to a ceiling 29 outside the showroom 20, and the irradiation device 12 is fixed to the ceiling 29 inside the showroom 20 by an arm 126. The lens unit 1 that irradiates the image information of the irradiation device 12
Reference numeral 25 is operable. The sensor 13 is an infrared sensor. The irradiation device 12 is a liquid crystal projector.

Then, the above and below ceiling 2 of the showroom 20
The control device 14 is arranged at 90. The control device 14 is connected to both the sensor 13 and the irradiation device 12. The control device 14 includes an optical disk on which video information is recorded, and a reproducing device storing the optical disk. The reproducing device and the irradiation device 12 are connected by a cable for transmitting video information.

Next, the viewing angle of the hologram screen 11 will be described. 2 shows a state where the showroom 20 and the video information display system 1 are viewed from above (a plan view), and FIG. 3 shows a state when viewed from the side (a side view).
The viewing angle 15 of the hologram screen 11 is within the fan-shaped range shown in FIG. Within this range, the brightness is K
0/2 or more. Here, K0 is the luminance of the central front face G of the hologram screen 11. The shape of the viewing angle is a conical shape.

Hereinafter, the viewing angle will be described in more detail. In FIG. 2, irradiation light 17 (containing image information) emitted from the irradiation device 12 reaches the hologram screen 11 while spreading in a fan shape. The irradiation light 17 hitting the end E of the hologram screen 11 is scattered and transmitted here and spreads in a fan shape. The fan shape formed at this time is denoted by reference numeral 161. Further, reference numeral 162 denotes a sector formed on the other end F of the hologram screen 11. The new sector formed by the overlapping portion of the two sectors 161 and 162 has the viewing angle 15.

In FIG. 3, similarly, the irradiation light 17 hitting the end H of the hologram screen 11 is scattered and transmitted, and spreads out in a sector 163. When it hits the end I, it spreads out in a sector 164. The new sector formed by the overlapping portion of the two sectors 163 and 164 has a viewing angle of 1
It becomes 5. Note that, since these descriptions have been made with reference to FIGS. 2 and 3 in a plan view, the state in which the irradiation light 17 is diffused is expressed as a fan shape. However, since the light is diffused in space, the viewing angle 15 becomes a conical shape. .

Next, K0 and the viewing angle will be described with reference to FIGS.
Will be shown more specifically. In the figure, point G is a point in the center front of the hologram screen 11,
The brightness here is K0. The point G is the brightest part on the hologram screen 11.

In FIGS. 2 and 3, the viewing angle 15 is a fan-shaped section shown in FIG. 2, and within this viewing angle 15, video information reflected on the hologram screen 11 can be viewed. Then, the luminance of the hologram screen 11 decreases with the distance.

The operation and effect of this embodiment will be described. Sensor 1
3 senses that the person 8 passing in front of the showroom 20 has entered the viewing angle 15 and sends a signal to the controller 14. In response to this, the control device 14 activates the reproducing device and the irradiation device 12 and sends out the video information to the irradiation device 12. Video information is displayed on the hologram screen 11.

Since the hologram screen 11 is transparent and is attached to a window glass, which is a transparent member, the hologram screen 11 is inconspicuous in a state where image information is not displayed, thereby making it difficult for the person 8 to pay attention. However, person 8
Enters the viewing angle 15, the irradiation device 12 is activated, so that the image information is suddenly displayed on the window glass (transparent member 10) which looks as if there is nothing from the person 8. As a result, the attention and interest of the person 8 is greatly attracted to the video information. That is, a high eye catching effect can be obtained.

Thereafter, the person 8 leaves and leaves from within the viewing angle 15. Upon sensing this, the sensor 13 sends a signal to the controller 14. The control device 14 stops the reproducing device and the irradiation device 12. For this reason, the operation time of the irradiation device 12 is only during the time when the person 8 is within the viewing angle 15, and can be greatly reduced as compared with the case where the video information is constantly transmitted. As a result, the power consumption of the device can be saved,
Running costs can be reduced. Further, since the operation time of the device can be shortened, the life of the device can be extended.

As described above, according to the present embodiment, it is possible to provide a video information display system which has an excellent eye catching effect, saves energy, has a low running cost, and has a long equipment life.

Although a transmission type hologram screen is used in this embodiment, a reflection type hologram screen shown below can be used. The principle of the reflection hologram screen will be briefly described. An irradiation device is arranged on the front side of the hologram screen, and image information is emitted from the irradiation device. This video information forms an image on the hologram screen to form a real image. The reflected light scattered and reflected from the real image enters the human eyes, so that the human can confirm the real image.

The hologram screen can be manufactured by forming an interference fringe on a photosensitive member using diffused light passing through a light diffuser such as frosted glass as object light and using diffused light as reference light. The transmission hologram screen is manufactured by irradiating the reference light and the object light from the same direction, and the reflection hologram screen is manufactured by irradiating from the opposite directions. Also in this case, a video information display system similar to the present embodiment can be obtained.

Embodiment 2 This embodiment describes a configuration example in which three video information display systems 31 to 33 are installed in a show room 20, as shown in FIGS. As shown in FIGS. 4 and 5, three video information display systems 31 to 3 according to the present example.
Reference numeral 3 denotes a transparent member 10 which is a window glass and three hologram screens 111 to 111 adhered to the transparent member 10.
113 and three irradiation devices 121 to 123 for irradiating the hologram screens 111 to 113 with image information. The hologram screens 111 to 1
13 is a lateral direction (moving direction of the person 8) with respect to the transparent member 10.
Are attached side by side.

As shown in FIG. 4, each of the irradiation devices 121 to 1
23 is mounted on a gantry 128 and placed on the floor. Further, a sensor and a control device (not shown) are provided and connected to the irradiation devices 121 to 123. Also, reference numeral 151
153 are viewing angles corresponding to the respective hologram screens 111 to 113. Others are the same as the first embodiment.

The operation and effect of this embodiment will be described. As shown in FIG. 5, the person 8 moves downward from above the drawing. The person 8 enters the viewing angle 151. The sensor detects that a person has entered the position indicated by reference numeral 81 and sends a signal to the control device. In response, the control device sets the irradiation device 121
Is activated to irradiate the hologram screen 111 with video information.

The person 8 continues to move and the viewing angle 151
From the inside, enters the viewing angle 152, and reaches the position 82. The sensor detects this and sends a signal to the control device.
As a result, the control device stops the irradiation device 121, starts the irradiation device 122, and transfers the image information to the hologram screen 1.
Irradiate No. 12.

Further, the person 8 moves, separates from the viewing angle 152, enters the viewing angle 153, and reaches the position 83.
The sensor detects this and sends a signal to the control device. In response to this, the control device stops the irradiation device 152 and
Activate 53. Then, the hologram screen 113 is irradiated with the video information. After that, the person 8 moves the viewing angle 15
Leave inside 3. The sensor senses this and sends a signal to the controller. The control device stops the irradiation device 123.

As described above, the video information display systems 31 to 33 according to the present embodiment can display video information at a position interlocked with the movement of the person 8. For this reason, a dynamic effect that video information appears and disappears with the movement of the person 8 can be obtained. Therefore, the video information display systems 31 to 33 according to the present example can easily call attention and attention of a person, and can obtain a high eye catch effect.

The same image information may be displayed continuously from the irradiating devices 121 to 123 (the remaining irradiating light from the irradiating device 121 may be displayed continuously).
2 illuminates, etc.), and different video information can be displayed.

Embodiment 3 In this embodiment, as shown in FIG. 6, a description will be given of a configuration example in which many video information display systems are collectively controlled using a central controller. As shown in FIG. 6, the video information display system 1
Is a central control unit 3 composed of a large computer, various workstations, etc. connected via various communication lines.
Controlled by 0.

A communication line connecting the central control device 30 and each video information display system 1 will be described. As shown in FIG. 6, the central control device 30 and the relay device 31 are connected by a line 310 made of an optical fiber cable. The relay device 31 is also a control device for CATV program distribution. The relay device 31 and each video information display system 1 are connected by a CATV line 311.

As shown in FIG. 6, the central control unit 30 and the video information display system 1 are connected by a public line. In this case, the central control unit 30 is connected to the public line 32 via a line 320, and the respective video information display systems 1 are connected from the public line 32 via an extension network 35. As for the line 320, a public line can be used. The public line 32 and the extension network 3
Reference numeral 5 denotes a line (analog or digital) for voice transmission used for telephone.

As shown in FIG. 6, the central control unit 30 is connected to a satellite broadcasting communication satellite 33 by a radio wave line 330, and the communication satellite 33 uses a satellite broadcasting radio wave line 331. Each video information display system 1 is connected. Others are the same as the first embodiment.

In each of the video information display systems 1 according to the present embodiment, the sensor detects that a person has entered the viewing angle and sends a signal to the control device. The control device receiving this signal distributes the video information via the line 311, the relay device 31, the line 310, or via the extension network 35, the public line 32, the line 320, or via the line 331, the communication satellite 33, the line 330. Request to the central control unit 30 to perform the operation. In response to this, the central control device 30 sends out video information to each video information system 1. The control device that has received the video information activates the irradiation device and sends the received video information to the irradiation device. Thus, the irradiation device irradiates the hologram screen with the image information, and the image information is displayed on the hologram screen.

Thereafter, the sensor of each video information system 1 detects that the person has left the viewing angle. Upon receiving a signal from the sensor, the control device stops the irradiation device and requests the central control device 30 to stop the video information. Upon receiving this, the central control unit stops transmitting the video information.

As a result, in managing each video information display system 1, the central control device 30 can manage and operate the video information display system 1 collectively, so that labor and labor can be saved. In addition, the central control device 30 manages video information.
Since the operations can be performed collectively, the management cost can be reduced.

Embodiment 4 As shown in FIG. 7, this embodiment is a video information display system using a weight sensor as a sensor for detecting that a person has entered a viewing angle. As shown in FIG. 7, the video information display system 1 of this example includes a transparent member 10, a hologram screen 11,
2, a control unit 14 and the like, and a showroom 20
It is installed in.

A weight sensor 139 capable of sensing the weight is embedded in the floor 209 in front of the showroom 20. The range in which the weight sensor 139 can sense the weight is set to the area where the above-mentioned viewing angle is projected on the floor 209. Other configurations are the same as those of the first embodiment, and have the same functions and effects as those of the first embodiment.

In this embodiment, a timer can be provided in the control device 14 so that the irradiation device 12 can be automatically started and terminated according to the time zone. Further, a touch switch or the like may be provided so that the person 8 can start and stop the irradiation device 12 freely.

Fifth Embodiment As shown in FIGS. 8 to 11, this embodiment describes a video information display system using an illuminance sensor capable of sensing the amount of light within a viewing angle as the sensor. As shown in FIG. 8, the image information display system 1 of the present embodiment includes a transparent member 10, a hologram screen 11 attached to the transparent member 10, and an irradiation device 12 for irradiating image information. Illuminance sensors 131 and 132 for sensing environmental conditions are provided, and the control device 14 is configured to be able to adjust the amount of irradiation light 17 emitted from the irradiation device 12 based on signals from the illuminance sensors 131 and 132. Become.

The image information display system 1 includes the interior light 20
It is installed between the showroom 20 illuminated at 8 and the outdoor 40 illuminated by the sun 49. That is, the window glass that separates the showroom 20 from the outside 40 is the transparent member 10. The illuminance sensor 131 is installed within a viewing angle on the outdoor side of the transparent member 10. The illuminance sensor 132 is installed in the showroom 20.
The hologram screen 11 is of a transmission type.

Next, a method of manufacturing the hologram screen 11 according to this embodiment will be described with reference to FIG. After the optical path of the coherent light 61 emitted from the laser light source 51 is bent by the mirror 52, it is split by the half mirror 53 into an optical path for the object light 621 and an optical path for the reference light 631. Then, the light 62 emitted from one side (left side in the drawing) is reflected by a mirror 54.
1. After being converted into parallel light through an objective lens 542 and an off-axis parabolic mirror 543, the object light 621 is transmitted through the diffusion plate 56 and is incident on the photosensitive material 58 through the half mirror 57.

On the other hand, the other light 6 exiting the half mirror 53
3 is converted into divergent light by an objective lens 553 through mirrors 551 and 552, and then enters the photosensitive material 58 as reference light 631 through a half mirror 57.

As a result, a transmission type hologram in which the diffusion plate 56 is recorded is formed on the photosensitive material 58, and this becomes the hologram screen 11 according to the present embodiment. By irradiating the obtained hologram screen 11 with irradiation light 171 from the direction of the reference light 631 in FIG. 9 using the irradiation device 12, the diffracted light 172 transmitted through the hologram screen 11 is obtained.
Can be the same light as the light diffused by the diffusion plate 56.

Instead of a hologram screen which can be manufactured by such a manufacturing method, a transparent substrate having a visual field selection function (for example, Angle 21 manufactured by Nippon Sheet Glass Co., Ltd. or Sumitomo Chemical Co., Ltd.) Screen made by Lumisty Co., Ltd.).

Next, as shown in FIGS. 10A and 10B, the hologram screen 11 of this embodiment and the transparent member 10 are joined by a transparent adhesive 101 via a film 102 made of polyester. I have. Further, FIG.
As shown in (a), the polyester polarizing film 103 with the hard coat 104 can be bonded to the outermost layer of the hologram screen 11 using the transparent adhesive 101.

By providing the hard coat 104, the hologram screen 11 can be prevented from being damaged by cleaning or the like (the effect of improving the scratch resistance can be obtained). The hard coat 104 needs to have a pencil hardness of 1H or more in order to achieve the above object. The polyester film 102 has a thickness of 140 μm, and the polyester deflection film 103 has a thickness of 90 μm.

FIG. 10B shows the anti-reflection film 105.
And polyester film 10 with hard coat 104
2 on the outermost layer of the hologram screen 11
01 is provided. When the hard coat 104 is provided outside the antireflection film 105, the scratch resistance is improved,
Since the antireflection effect is lost, the antireflection film 105 needs to be provided inside the antireflection film 105. The antireflection film 105 has an effect of reducing noise light due to interface reflection on the back surface side of the hologram screen 11.

Further, an antireflection film can be provided on the outermost layer of the polyester polarizing film 104 with the hard coat 104 in FIG. FIG.
Regardless of (a) and (b), an antifouling film that can reduce the adhesion of dirt may be provided outside the antireflection film 105.

The function and effect of this embodiment will be described. As shown in FIG. 8, when observing the image information irradiated on the hologram screen 11, (1) the hologram screen 1
1, the reflected light 481 of the observer side background 48 on the front and back surfaces
(2) Light 211 from the exhibition product 21 which is the background on the back side of the hologram screen 11, and noise light other than the light constituting the video information is observed by the two.

In this example, the illuminance sensor 131 is installed within the viewing angle of the transparent member 10 on the outdoor 40 side. The illuminance sensor 132 is installed in the showroom 20. The two illuminance sensors 131 and 132 can detect the illuminance on the outside 40 side and the inside of the showroom 20, respectively. Utilizing this, the signals from the illuminance sensors 131 and 132 are input to the control device 14, and when the illuminance detected by both sensors is high, the light amount of the irradiation light emitted from the irradiation device 12 is increased. Increase the brightness of the image projected on the hologram screen. This makes it possible to make the noise light inconspicuous and enhance the visibility of the image.

When the illuminance detected by both sensors is low, the image becomes bright when the amount of irradiation light is large,
Halation may occur. In this case,
The light quantity of the irradiation light 17 from the irradiation device 12 can be reduced, and the visibility of an image can be improved. When the illuminance sensors 131 and 132 detect a value equal to or higher than the illuminance expected to be unable to avoid the influence of noise light even when the light amount is maximized, the irradiation device 12 can be stopped.

As described above, according to this embodiment, the video information from the irradiation device is changed to the optimum one in accordance with the environmental state within the viewing angle, or the irradiation of the video information from the irradiation device is stopped. can do.

In this embodiment, the light quantity of the irradiation light is adjusted. However, since the luminance of the image is inversely proportional to the irradiation area of the irradiation light, the enlargement / reduction mechanism by adjusting the position of the lens unit of the irradiation device 12 is used. The luminance of the image can be adjusted by changing the irradiation area of the irradiation light. In addition, since some video information has sufficient visibility even when the surroundings are bright, the video information itself can be switched to secure the eye catch effect. In addition, the illuminance sensor may be a luminance meter that can detect the luminance of the displayed product 21 behind the image with the background 48 within the viewing angle.

Further, as shown in FIG. 11, another illuminance sensor 135 is installed toward the hologram screen 11, and
The illuminance of the direct sunlight 490 from the sun 49 may be sensed, and when the illuminance becomes a certain value or more, the awning 45 for blocking the direct sunlight 490 may be operated. As the awning 45, eaves, blinds, curtains, and the like can be used.

Embodiment 6 This embodiment describes a video information display system having a speaker for providing audio information. As in the first embodiment, the image information display system includes a transparent member, a hologram screen attached to the transparent member, and an irradiation device that irradiates the hologram screen with image information. The hologram screen includes a volume sensor for detecting a volume within a viewing angle of the hologram screen, and a control device configured to control the irradiation device and the speaker based on a signal from the sensor.

The control device starts and stops the irradiation device according to the sound volume within the viewing angle detected by the sound volume sensor.
It is configured so that the volume of the speaker can be adjusted.

When a certain volume of sound is detected within the viewing angle by the sound volume sensor, it is considered that a person has arrived at and around the viewing angle, and the control device activates the irradiation device and the speaker. . If the volume sensor cannot detect a certain volume of sound within the viewing angle, the control device stops the irradiation device and the speaker, assuming that no person exists within and around the viewing angle.

Further, when the sound volume sensor detects noise of a predetermined magnitude or more within the viewing angle, the control device controls the volume of the speaker so that the sound of the speaker can be clearly heard by a person within the viewing angle. Adjust to larger. On the other hand, if the volume sensor can only sense a sound of a predetermined volume or less within the viewing angle, it is considered that the viewing angle is in a quiet state, and the above-mentioned control device is provided with a speaker so that a person is not uncomfortable. Adjust the volume of the smaller. Others are the same as the first embodiment.

The video information display system of this embodiment can provide audio information together with video information, and can provide the volume of the audio information at a volume corresponding to the condition within the viewing angle. The effect can be obtained. In addition, in order to make it easier to detect the sound volume within the viewing angle, the volume sensor has a greater effect when a directional sound sensor provided with a reflector that can collect sounds within the viewing angle is used.

Embodiment 7 In this embodiment, as shown in FIGS. 12 to 16, a case will be described in which an information display system is installed in an automobile which is a moving body. As shown in FIGS. 12 and 13, the display unit 100 including the transparent member 10 and the hologram screen 11 is suspended from the ceiling of the moving body 7 between the driver's seat 71 and the passenger's seat 72.
0 and is arranged so that the person 8 in the rear seat 73 can see the video information.

As shown in FIG. 12, a vibration sensor 133 is provided in the information display system 1 of this embodiment, and the control device 14 is controlled based on a signal from the vibration sensor 133.
Is configured to correct the blur of the video information due to the vibration of the moving body.

Details of this configuration will be described with reference to FIG. The signal from the vibration sensor 133 is transmitted to the controller 14
It is input to the electric correction circuit inside. The video information is input to the irradiation device 12 from a source 120 such as a video deck. The electric correction circuit of the control device 14 applies the inverse correction of the vibration to the image information input to the irradiation device 12, and thereafter irradiates the display unit 100 with the image information from the irradiation device 12. Others are the same as the first embodiment.

Since the video information display system 1 is mounted on the moving body 7, the video information is shaken by the vibration when the moving body 7 travels, and is seen by the person 8. However,
In this example, after the image information is corrected based on the signal from the vibration sensor 133, irradiation is performed from the irradiation device 12, so that the influence of the vibration is canceled and a correct image without blur can be viewed. Others have the same operation and effects as the first embodiment.

Further, different configurations of the information display system 1 of the present example will be described. In this case, as shown in FIG. 16, the control device 14 is configured to suppress the vibration of the irradiation device 12 due to the vibration of the moving body 7 based on the signal from the vibration sensor 133.

The signal from the vibration sensor 133 is transmitted to the controller 1
4 is input to a vibration control mechanism 149 provided in the irradiation device 12. The video information is input to the irradiation device 12 from a source 120 such as a video deck in the same manner as described above. By the control device 14 operating the vibration control mechanism 149 based on the signal of the vibration sensor 133, the influence of the vibration of the moving body 7 in the irradiation device 12 is canceled. Even in this configuration, the same effect as described above can be obtained, and the person 8 can see a correct image without blurring. In addition,
In the configuration of this example, as shown in FIG.
The display unit 100 can be embedded on the back of the display.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory diagram of a video information display system according to a first embodiment.

FIG. 2 is an explanatory plan view of a viewing angle of a hologram screen of the video information display system according to the first embodiment;

FIG. 3 is an explanatory side view of a viewing angle of a hologram screen of the video information display system according to the first embodiment;

FIG. 4 is an explanatory side view of the video information display system according to the second embodiment;

FIG. 5 is an explanatory plan view of a video information display system according to a second embodiment;

FIG. 6 is an explanatory diagram of a number of video information display systems connected to a central control device according to the third embodiment.

FIG. 7 is an explanatory diagram of a video information display system using a weight sensor according to a fourth embodiment.

FIG. 8 is an explanatory diagram of a video information display system using an illuminance sensor according to a fifth embodiment.

FIG. 9 is an explanatory diagram of the method of manufacturing the hologram screen according to the fifth embodiment.

FIG. 10 is a cross-sectional explanatory view of (a) a hologram screen provided with a polyester deflecting film and (b) a holographic screen provided with an antireflection film according to a fifth embodiment.

FIG. 11 is an explanatory diagram of a video information display system according to a fifth embodiment in which a hologram screen is provided with a shade.

FIG. 12 is an explanatory diagram according to a seventh embodiment, in which a video information display system is provided on a moving object.

FIG. 13 is an explanatory diagram of a display unit installation state of the video information display system according to the seventh embodiment.

FIG. 14 is an explanatory diagram of another display unit installation state of the video information display system according to the seventh embodiment.

FIG. 15 is an explanatory diagram showing a system configuration of a video information display system according to a seventh embodiment.

FIG. 16 is an explanatory diagram showing a system configuration of a video information display system according to a seventh embodiment in which a vibration control mechanism is provided in an irradiation device.

[Explanation of symbols]

 1,31,32,33. . . 9. video information display system, . . Transparent member, 11. . . Hologram screen, 12 . . Irradiation device, 13. . . Sensors, 131, 132. . . Illuminance sensor 133. . . Vibration sensor, 14. . . Control device, 15. . . Viewing angle, 3. . . Central control unit,

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI G09F 27/00 G09F 27/00 C H04N 5/64 521 H04N 5/64 521F 5/74 5/74 Z Yasuhiro 1-1-1 Showa-cho, Kariya City, Aichi Prefecture Inside DENSO Corporation

Claims (13)

[Claims] 1. A sensor comprising: a transparent member; a hologram screen attached to the transparent member; and an irradiation device for irradiating the hologram screen with image information, and a sensor for sensing an environmental state within a viewing angle of the hologram screen.
A video information display system, comprising: a control device configured to control the irradiation device based on a signal from the sensor. 2. The video information display system according to claim 1, wherein the viewing angle is an area where the luminance is equal to or greater than K0 / 2 (K0 is a luminance value in front of the center of the hologram screen). 3. The video information display system according to claim 1, wherein said sensor is an illuminance sensor. 4. The method according to claim 1, wherein:
The video information display system includes a speaker for providing audio information, and the sensor is a volume sensor. 5. The method according to claim 1, wherein:
The image information display system, wherein the sensor is configured to detect an approach of a person into a viewing angle. 6. The method according to claim 1, wherein:
A video information display system, wherein the video information display system is installed on a moving object. 7. The video information display system according to claim 6, wherein the video information display system is installed between at least two seats provided on a moving body. 8. The video information display system according to claim 6, wherein said hologram screen is configured to be housed when not in use. 9. The method according to claim 6, wherein:
The sensor is a vibration sensor, and the control device is configured to correct a shake of the irradiation image information due to a vibration of the moving body based on a signal from the vibration sensor. system. 10. The apparatus according to claim 6, wherein the sensor is a vibration sensor, and the control device is configured to vibrate the irradiation device itself due to vibration of the moving body based on a signal from the vibration sensor. A video information display system, characterized in that the video information display system is configured so as to suppress noise. 11. The video information display system according to claim 1, wherein the video information display system is configured to be controlled by a central controller connected via a communication line. 12. The image according to claim 11, wherein the central control device acquires a signal from the sensor via the communication line, and controls the irradiation device based on the signal. Information display system. 13. The video information display system according to claim 1, wherein the hologram screen records a diffuser.