JP2000221920A - Continuous action image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent reduction of contrast even in the case of receiving a light. SOLUTION: A static image signal has little different time with respect to each of display devices 6, and is an image signal which becomes a continuous action as a whole image when seen from a moving body such as a train. Since the image is given as an electric signal, rewriting of the content of a picture memory is sufficient for changing the content of the image. Therefore, any image can be displayed and plural images can be displayed, too. A multiple image is prevented by shortening an image display time compared with a display suspending time of the image, to thereby obtain a more natural and clear image. Light absorbers 104 as a contrast improving means are arranged on the periphery of the display device 6. Since the external light, such as the light of a train or the like, can be prevented from being superimposed on an image display face by the light absorbers 104, the contrast of the image can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuously operating image display device. Specifically, a plurality of video display devices are arranged on the inner wall surface of a tunnel or the like, and one frame of a continuous video and one still image of a related continuous image are allocated to the plurality of video display devices, and the respective still images are allocated. By turning on and off at the same time, a moving image can be displayed, and the contrast of the moving image is improved by providing a contrast improving means around a part of the video display device.

[0002]

2. Description of the Related Art Conventionally, as an image display apparatus applied in a subway tunnel, there is an image display apparatus which provides a frame-advance image from outside the vehicle to a passenger of a vehicle passing through the tunnel. It has been proposed (Japanese Patent Laid-Open No. 5-0)
27197, JP-A-5-040448, JP-A-5-224617, etc.).

In such an image display device, for example, a plurality of image display means of a terminal for displaying an image are arranged at predetermined intervals on a wall surface in a tunnel. Each image display means blinks a still image of each frame constituting a moving image to display several frames or several 1
Video (motion picture) consisting of 0 frames of images
The display is enabled.

[0004]

By the way, in this type of conventional image display device, since the image display means is installed near the wall surface as described above, the contrast of the image is deteriorated by the reflection of light. I will. For example, as shown in FIG. 25, a plurality of image panels (image display means) 6 are arranged at regular intervals on the wall surface 5a of the tunnel 5, and each image panel 6 is provided with a light source. Reference numeral 2 denotes a track on which the train passes.

As described above, the image panel is simply arranged on the tunnel wall 5a. Although the inside of the tunnel is dark, when the passenger rides on the vehicle and looks at the wall surface 5a, it is not completely dark due to the illumination inside the vehicle and the reflection of emergency lights provided in the tunnel 5, for example. In particular, this tendency becomes remarkable when the vehicle approaches the installation wall surface 5a.
The effect on the image of the non-dark area due to this reflection, that is, the effect on the observed image of the non-dark area when the image panel that becomes a continuous image blinks at a cycle determined by the traveling speed of the vehicle at once is described below. .

[0006] When the frequency of the flickering stimulus increases, the visual perception does not perceive as flicker, but perceives as if stimulated by continuous light. A general moving image display uses this visual characteristic to realize a moving image by sequentially displaying continuous images on a display surface at a fixed position at a predetermined period that is perceived as continuous light.

It goes without saying that the continuous image display device described in the prior art utilizes the same principle. However, the continuous image display device flashes and illuminates the image panel at a cycle determined by the interval between the image panels and the speed of the vehicle, and an observer moving with the vehicle always displays an image at a fixed position at the moment of the flashing. By being displayed, a moving image is observed at a fixed position like the display.

Therefore, the difference between the general moving image display and the continuous image display device installed in the tunnel is that the displayed image physically moves at every blinking cycle. That is, the wall surface (ineffective area) between images displayed during that time also passes through the field of view.

At this time, if the invalid area scatters outside light and passes through the invalid area at a high speed, the scattered light of the invalid area is visually mixed with the display image portion of the image panel, and the panel image itself is not observed. Raise the black level. This is the same phenomenon that the top, which is painted in black and white in a fan shape on the top, appears to be gray when rotated at high speed. As a result, the scattered light in the invalid area is superimposed on the display panel image which should be originally at the black level, and as a result, the contrast of the panel image is deteriorated.

When the image display device is installed in a location outside the tunnel where external light flows, the external light directly enters the image display surface. Therefore, there is also a problem that the image is superimposed on a display panel image which should be originally at a black level, and as a result, the contrast of the image is deteriorated.

In view of the above, the present invention has solved such a conventional problem. By arranging a light absorber or the like on a part of the periphery of each image display surface arranged along the traveling direction of the moving body. Another object of the present invention is to provide a continuous operation video display device that improves the contrast of a video (moving image) observed during traveling.

[0012]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a moving body carrying a person and a position along a traveling direction that can be seen from the moving body. In a continuous video display device comprising a plurality of video display devices arranged and display control means for simultaneously flashing images on the video display device, the plurality of video display devices are displayed along a traveling direction of the moving object. A means for improving the contrast of a display image in the device is provided on a part of the periphery of the video display device.

Here, the light absorber as the contrast improving means reduces scattered light between the image display surfaces (ineffective area portion) due to reflection by external light or the like, and the scattered light is visually superimposed on the display image display portion. It acts to prevent that.

Further, the light shielding plate as a contrast improving means acts so as to prevent external light from being directly incident on the image display surface and to prevent the scattered light from being superimposed on a display image which should be black.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. The following embodiment is a case where the present invention is applied to a continuous operation image display device which can be viewed as a continuous operation image.

FIG. 1 shows an embodiment to which the present invention is applied. In this example, a train 4 is used as a moving body which can run on a traveling path 3 on which rails 2 are installed and which can carry a person.
Further, display devices 6 functioning as image display means are arranged in a row at predetermined intervals on a portion that can be seen from the train 4 through the window 4a, in this example, on a wall surface 5a of the tunnel 5 where the traveling path 3 is formed. Thus, the continuous operation video display device 1 is configured.

The display device 6 is supplied with a still image signal for displaying a predetermined still image. In this example, a two-dimensional display device in which a plurality of LEDs (light emitting diodes) are arranged in a matrix. (L
(ED display device).

A plurality of LED display devices 6 are mounted on the wall surface 5a in a line at a predetermined interval, and a part of the periphery of the plurality of LED display devices 6 is projected on the LED display device 6. Contrast improving means 100 is provided for preventing the contrast of the displayed image from lowering.

The reason why the contrast is lowered is that the black level of the image displayed on the LED display device 6 is raised by external light, and as a result, the black level shifts to the gray level side. For this reason, the contrast improving unit 100 controls the light from the periphery of the LED display device 6 to LE.
It functions as a unit for preventing the light from entering the display surface of the D display device 6. Therefore, this contrast improving means 10
As 0, a light absorbing layer, a light shielding layer, and the like can be considered.

The embodiment shown in FIG.
In this case, a light absorber 104 is provided as a contrast improving means in a space (ineffective area portion) 102 between the areas 6 and 6. As the light absorber 104, a corrugated plate (a light metal plate such as aluminum or a resin plate) is used, and external light (light of a train, illumination light in a tunnel 5, etc.) incident between the LED display devices 6 and 6 is used. ) Are absorbed or scattered (diffusely reflected) and do not reach the image display surface of the LED display device 6.

For example, as shown in FIG. 3, the height of the corrugated sheet is lower than the thickness of the LED display device 6, and the width thereof is L as shown in FIG.
A light absorber 104 substantially equal in length to the vertical direction of the ED display device 6 is used.

The light absorber 104 has, for example, a triangular cross section as shown in the figure so that the light does not scatter and reach the image display surface even if the train 4 enters from any direction. The number of triangular waves is arbitrary.

The light absorber 104 is arranged in parallel with the LED display device 6 as shown in FIG. When a matte coating or the like is applied to the surface of the light absorber 104, the light absorption effect and the light attenuation effect can be further enhanced. It is also conceivable that the scattered light indirectly enters from the upper and lower wall surfaces 5a of the LED display device 6. Therefore, in order to prevent external light from entering from the upper and lower wall surfaces 5a, as shown in FIG.
6 may be applied. As the light absorbing layer 106, a black paint or the like can be considered. The area on which the light absorbing layer 106 is applied is several cm to prevent reflection to the LED display device 6.
The width is several tens cm.

As described above, by forming the means 100 for preventing external light from being scattered all around the LED display device 6, the contrast of the image displayed on the LED display device 6 can be greatly improved. it can.

FIG. 5 et seq.
5 and 6, a light absorbing layer 1 is provided on a wall surface 5a around an LED display device 6 as shown in FIGS.
06 is applied. By applying the light absorbing layer 106 so as to surround the LED display device 6 in this manner, LE
Since reflection of light from around the D display device 6 can be effectively prevented, the contrast of an image can be improved.
In this case, the distance from the wall surface 5a to the image display surface of the LED display device 6 is increased to some extent, that is, the thickness of the device itself of the LED display device 6 is set to, for example, 10 to 15 cm, so that the reflected light is more effectively prevented. it can. As the light absorbing layer 106, the above-described black coating can be used.

Furthermore, it is more effective to attach a hood (not shown) in units of several cm to the LED display device 6 itself so as to surround the image display surface. Of course, as shown in FIG. 7, the light absorbing layer 106 may be applied only to the section of the invalid area between the LED display devices 6. That is, the light absorbing layer 106 can be applied only to a part of the periphery of the LED display device 6. Of course, even if the wall surface 5a is formed as a dark achromatic rough surface, external light can be absorbed, so that a certain effect can be expected.

Although the above-described plurality of LED display devices 6 are applied to a case where a continuous moving image is obtained by being installed inside the tunnel 5, the present invention can be applied outside the tunnel 5. In that case, as the contrast improving means 100, a light shielding body 110 (110a, 110a) as shown in FIG.
b) may be provided in parallel on both upper and lower ends of the LED display device 6.

In this case, the plurality of LED display devices 6 are shown in FIG.
As shown in the figure, the vehicle is attached and fixed to one end of the holding plate 112 so as to face the train 4 while maintaining a predetermined distance.

Whether the passenger 113 in the train 4 is standing and looking out of the window 114 or sitting down and looking at the car window, the LED display device 6 is displayed by the respective eyes 115 and 116. Is fixed so that it can be watched.

Then, the upper light shield 110a is provided so that the outside light 118 does not reach the image display surface of the LED display device 6.
Is selected. With the lower light shield 110b, external light and scattered light can be more effectively prevented. Light shield 11
0 may be a box-shaped structure as shown in FIG. In this case, the contrast improving effect is enhanced by using a box-shaped structure that has been subjected to a process such as matting.

As described above, the light absorber 104 and the light absorbing layer 10
The provision of the light shield 6 or the light shield 110 on a part or the entire periphery of the LED display device 6 prevents external light, scattered light, and the like from reaching the video display surface of the LED display device 6, Of the video levels, the black level is less prominent. Thereby, the deterioration of the contrast can be improved.

By the way, each of the plurality of LED display devices 6 according to the present invention is supplied with a still image signal which is operated continuously. FIG. 11 shows a continuous operation video display device 1 for supplying the still video signal. In FIG. 11, the same parts as those in FIG.

In FIG. 11, a continuous operation video display device 1
Is an image memory 7 for supplying each still image signal to an LED display device 6 using a two-dimensional LED display element.
And an image memory control device 8 for controlling the image memory 7
And a video signal supply device 9 which is provided between the video signal supply device 9 and the LED display device 6 and intermittently intermittently transfers a still image signal from the image memory 7 to the plurality of L signals.
It comprises a buffer memory 10 to be supplied to the ED display device 6.

As the image memory 7, a random access memory (RAM) or the like can be used. A still image signal that is sequentially and continuously operated and supplied from a video signal supply device 9 using the image memory 7 is a video signal that is an image in which motion is continuous as a moving image, and forms a so-called animation moving image 1. This is the same as the video signal for each frame. Therefore, it is also a signal representing a still image such as one frame of a movie film.

The video signal supply device 9 has a first monitor 13
, The second monitor 15 and the image input device 14 are connected. Further, a signal line 12 from the video signal supply device 9 is connected to the buffer memory 10, whereby the operation of the buffer memory 10 is controlled.

In the continuous operation video display device 1 configured as described above, the operation of taking in a still image signal into the image memory 7 will be described first. A jumping rabbit is illustrated as a still image that is sequentially and continuously operated. Then, still images 6A, 6B, 6C, 6D, and 6E in which the rabbit is seen to jump from different windows 4a as shown in FIG. 12 will be described.

First, a still image 6A showing the rabbit before jumping
Is input from the image input device 14 to the image memory control device 8 and the still image is confirmed on the second monitor 15, and if the still image to be used is determined, the address of the image memory 7 is designated and the still image 6A Is stored in the image memory 7.

Next, the still image 6B showing the next motion of the rabbit is taken into the image memory control device 8 by the image input device 14, and the image is confirmed on the second monitor 15,
A different address of the image memory 7 is designated and the still image 6 is stored at that address.
B is stored. Similarly, the respective addresses up to the still image 6E are designated and stored in the image memory 7.

The stored five still images can be simultaneously checked on the multi-display monitor 13, for example.

As an example, five still images have been described.
Of course, in actual application of the present invention, the most popular example is 30 still images per second. In this case, for example, 90 still images are required to display for 3 seconds. Needless to say. Hereinafter, the description will be continued using five still images for the sake of simplicity.

As the image input device 14 for inputting a still image to the image memory control device 8, a telecine can be considered first. Telecine is a device for converting one frame per frame from a normal movie film into a television signal, and is capable of converting a still image of 24 frames per second into a television signal of 30 frames per second.

Since images for commercial use are generally taken with a silver halide film, a telecine is used as the image input device 14. If a commercial video is shot by a video camera, a video tape recorder (VTR) with a still image playback function or the like is used as the image input device 14. Further, when an original still image is shot using a VTR dedicated to animation creation, the VTR itself can be the image input device 14. If the moving image to be finally used is determined, the reproduced moving image of the VTR is sent to the image memory control device 8 as it is, and the frame synchronization signal included in the reproduced image signal is detected and the image memory 7 can also be stored.

The five still images stored in the image memory 7 in this manner are supplied to the buffer memory 10 via the transfer line 11 under the control of the image memory controller 8. The buffer memory 10 is provided for each LED display device 6
Has an address corresponding to. Therefore, the still image 6A supplied from the image memory 7 is, for example, the address A of the buffer memory 10.
Is stored in the LED, thereby the LED of FIG.
A still image 6 is displayed on the rightmost LED display device of the display devices 6.
A is to be displayed. In the same manner, each still image is supplied from the buffer memory 10 to each LED display device 6 while being controlled by the image memory control device 8.

Next, supply of a still image from the buffer memory 10 to the LED display device 6 will be described. Since the present invention aims to provide a device in which train passengers can view moving images by arranging still images that are sequentially operated in sequence, the LED display device 6 needs to perform intermittent display. The intermittent display is also disclosed in the above-mentioned three prior art patent publications, so the detailed description thereof will be omitted. However, the intermittent display of the present invention is a unique intermittent display not found in the conventional example. It is characterized by performing.

That is, in the present invention, the image memory controller 8 controls the buffer memory 10 to intermittently supply a still image to the LED display device as shown in FIG. Is set to t1 and the still image supply stop time is set to t2, intermittent display is performed such that a time relationship of 100t1 <t2 is satisfied.

The image memory controller 8 transmits a control signal (for example, a signal shown in FIG. 13) for controlling the operation of the buffer memory 10 to the buffer memory 10 via the signal line 12. The buffer memory 10 receiving this control signal sets the time t.
During one, the still images stored at the respective addresses are simultaneously supplied to the corresponding LED display devices 6. Thereby, the LED display device 6 simultaneously displays the respective still images.

Next, during the time t2, the buffer memory 10
Stops the supply of the still image to the LED display device 6. As a result, the LED display device stops displaying the still image, and the display screen becomes dark.

If this operation is continuously performed, the LED display device 6 performs a blinking display in which the LED is turned on for the time t1 and darkened for the time t2. According to the applicant's experiments,
Although the relationship between t1 and t2 depends on various conditions, 200t1
= T2 to 1000t1 = t2, and a moving image with clear and smooth motion without blur was obtained. If t1 is less than or equal to 100t1 = t2 (that is, 100t1> t2), a satisfactory moving image could not be obtained. This is because, due to the afterimage effect of the human eye, if the lighting time of a still image of a certain frame is long, these two frames will be seen at the same time even when looking at the next frame, and the image will flow as if it were actually seen. This is probably because the image is blurred or appears as a multiple image.

In the above experimental example, the adjacent still image is 1 mm
This is a case where the still image can be visually recognized without blurring due to the movement even if the image is shifted. In that case, 60
In the case of km / H, the display device interval is 53c as described later.
Assuming that m, the optimum display time t1 at that time is t1 = (1/30) seconds × (1/530 mm).

The relationship between the display time and the display stop time described above differs depending on the running speed of the train, the amount of light emitted from the LED display device 6, the size of the display device 6, and the like. It has been found that the still image hardly blurs within the above-mentioned range, and can be viewed as a clearer still image.

FIG. 14 schematically shows the relationship between the train 4 and the plurality of LED display devices 6 installed in the tunnel 5 when the display time is selected as described above. However,
In this figure, the image is shown so as to be displayed before or after the train 5 passes, but this is merely a schematic diagram. Actually, an image is displayed only from the time when the head of the train 5 passes through the first LED display device 6 until the time when the train 5 passes.

The buffer memory 10 is used for intermittent display control.
Of course, the same intermittent display is also possible by intermittently supplying the power (power) of the LED display device in the relationship shown in FIG.

Now, in order for a continuous still image to be visually recognized by the human eye as a moving image, 24 frames per second in the case of a movie, and 1 second in the case of the NTSC standard in the case of television. 30 frames, 1 for PAL standard
25 frames are required per second. Therefore, at least 24 frames / sec is required to obtain a normal moving image,
In the present embodiment, 30 frames / sec will be described as an example.

When the LED display device 6 is installed on the tunnel wall 5a of the train 4, the installation interval, the size of the display device 6, and the like will be described. The installation interval varies depending on the traveling speed of the train 4, and the size of the LED display device 6 varies depending on the facing distance between the train 4 and the wall surface 5a. (Table 1) shows the hourly speed, the second speed, and the installation interval of the train 4.

[0055]

[Table 1]

As can be seen from Table 1, the speed is 60 kph
m of the moving object (train 4) is 16.6 m at a second speed. Since 30 frames of still images must exist during this 16.6 m, the installation interval is 16.6 m / 30 = 53.
cm. Therefore, it is understood that the size of the LED display device 6 used in the horizontal direction is limited by the installation interval.

If the train passing speed at the place where the LED display device 6 is installed is determined, the LE
The installation interval and size of the D display device 6 are determined. In the above example, the speed is 60 km / h, and the installation interval is 53 cm. Therefore, the size of the LED display device 6 may be about 50 cm or less in width (thus, it is desirable that the length in the vertical direction is 50 cm or less). However, since the distance from the window of the train 4 to this LED display device is usually only about 50 cm, in consideration of this, the LED display device 6 having a width of about 25 to 40 cm is suitable.

As can be understood from Table 1 when the speed of the train 4 is higher, the size of the LED display device 6 can be correspondingly increased. If the distance from the LED display device 4a to the LED display device 6 is about 50 cm, the entire device may not be visible even if a very large LED display device is used. As described above, when the distance is 1 m or 2 m and the speed is high, the width of the LED display device 6 can be increased accordingly.

In the above description, one moving image (1
Still video signals which constitute a continuous operation and constitute one moving image content with one consistency) are stored in the image memory 7. However, in actual use, a plurality of moving image contents having different contents are stored. In some cases. This is because, for example, when a moving image is used for product promotion or advertisement, the contents of the moving image differ depending on the sponsor. Even if the contents of the moving images are different as described above, all of the contents of the moving images (hereinafter referred to as a program) are temporarily stored in the image memory 7.

One of the stored programs is supplied from the image memory 7 to the buffer memory 10 under the control of the image memory control device 8, and the LED display device 6 is driven intermittently to continuously A working video is displayed.

FIG. 15 schematically shows a plurality of programs stored in the image memory 7. When a plurality of programs are stored in the image memory 7, for example, a still video signal used for advertisement of cosmetics is stored in the program address 01 as shown in FIG. Similarly, in the program address 02, for example, a still video signal used for advertisement of a passenger car is stored. By the way, in the example of FIG.
, A whiskey is stored in 07, a cigarette is stored in 08, and a still image signal for advertisement is stored in 09.

How the data is stored is arbitrary. For example, when the data is stored using the image input device 14, the following operation is performed. First, a predetermined frame, which is a still video signal related to cosmetics, is taken in from the image input device 14 and given an address 01 in the image memory 7 and stored. Next, a predetermined number of frames of still video signals relating to the passenger car are fetched from the image input device 14 and designated in the address 02 and stored in the image memory 7. Thereafter, the remaining still video signals are stored for a predetermined number of frames in the same procedure.

A list storing a plurality of programs shown in FIG. 15 is called a program list. The program list can be confirmed on the monitors 13 and 15 if necessary.

The image memory control device 8 can usually be constituted by a personal computer. FIG. 16 shows an image memory controller 8 when a personal computer is used.
The following shows a specific configuration. The image memory controller 8 includes a ROM 81 as a memory in which a control program is stored, a central processing unit CPU 82, a keyboard 83 for inputting control information, and a mouse 84 in this example as an external input device.

The CPU 82 receives a detection signal from a detection device 85 for detecting that a train has approached the place where the LED display device 6 is installed. In this example, a sensor 85 for detecting that the tip of the train (driver's seat) has passed
Is installed on the side of the LED display device 6 closest to the tip of the train, and a signal that detects this passage is supplied to the CPU 82.

When the CPU 82 receives this detection signal,
The CPU 82 controls the buffer memory 10 to transmit the still video signal stored in the buffer memory 10 to the LED display device 6 via the signal line 12 in the above-described manner.

When the period during which the detection sensor 85 is operating has elapsed, that is, when the train has passed, the CPU 82 sends a display end signal to the buffer memory 10 via the signal line 12, and the LED display device 6 displays the program list 01. The continuous operation display related to the still image signal of the cosmetic is ended.

When the transmission of the program list 01 ends, the CPU 82 changes the program list from 01 to 0 this time.
Change to 2. As a result, the program list 02 stored in the image memory 7, in this example, a still image signal relating to the passenger car is sent to the buffer memory 10, and the contents of the buffer memory 10 are changed from cosmetics to image information of the passenger car.

When the detection sensor 85 detects that the next train has passed, the continuous operation video apparatus performs the same operation as described above, and enters a continuous display mode of another video. When the display operation is completed, the contents of the buffer memory 10 are rewritten from the program list 02 to the program list 03.

FIG. 1 is a flowchart showing the above operation.
It looks like 7.

That is, the contents of the program list 01 are stored in the buffer memory 10 as an initial mode in step S1. Next, in step S2, a signal from the detection sensor 85 indicating that the train has arrived is waited for. When the detection sensor 85 is turned on, the CPU 82 drives the buffer memory 10 intermittently in step S3. And step S4
When it is detected that the detection sensor 85 is turned off,
In step S5, the CPU 82 stops the operation of the buffer memory 10.

Next, when it is confirmed in step S6 that the video display mode is continued, the program list 01 is incremented by "1" in step S7, and the process returns to step S1 to wait for a similar video display operation. Becomes

When the video display mode ends, the video display processing program ends. As described above, since the program list is updated each time the train passes during the video display mode, the program of the video automatically displayed each time the train 4 passes can be rewritten. Therefore, the number of transmissions of each program provided to the passenger can be the same depending on the method of the transmission program.

In the above description, the program list is rewritten every time the train passes. However, the program list may be rewritten every five passes, for example, not every time the train passes, or the rewriting frequency may be changed for each program. Good.

For example, if the cosmetics in the program list 01 are to be displayed three times in succession, a still video signal relating to the cosmetics is sent to the buffer memory 10 and "3" is designated as frequency data indicating the display frequency. When the frequency data becomes “0”, a program rewriting process is performed. At the same time, the frequency data of the next program is also specified.

In order to perform such a process, first, as shown in FIG.
In addition to N (N = 1,...), The frequency data #M is input. Then, in step S8, the number of times the train 4 has passed is counted, and the same program is repeated until # M = 1. When # M = 1, the program #N is incremented and the frequency data #M in the new program is updated unless a display stop command is issued (step S).
7) Then, the process returns to step S1.

As described above, the display frequency can be set for each program. For example, it is also possible to display the still image signal for the cosmetics of the program 01 three times in a row and the still image signal for the passenger car in the program 02 up to five times in a row.

Alternatively, it is possible to change the display frequency during the time of the day. For example, if the program displays alcoholic beverages such as beer or whiskey, the frequency of display is increased after 5 pm to target the return time of office workers, and foods such as hamburgers In the case of a program that displays a kind of video, it is also possible to program such that the display frequency is changed according to the display time zone so that the display frequency is increased by focusing on the meal time zone. .

In order to change the display frequency of the display program under various conditions, it is necessary to change or rewrite data relating to the display frequency and time zone.

FIG. 19 shows an example of a program list in which the display time zone and the display frequency are considered. According to this example, for the cosmetics of the program list 01 and the passenger cars of the program list 02, the corresponding video is always displayed at a constant frequency regardless of the time zone, and the hamburger of the program list 03 is meal time from 11:00 to 13:00. The whiskeys and beers in the program list 07 are displayed concentratedly in the time period from 17:00 to 20:00.

FIG. 1 shows the determination of the time zone and the frequency.
9 is displayed on the monitor 15, for example, and the keyboard 83 is displayed.
The data of the time zone and the frequency are input using the mouse and the mouse 84.

The above display mode is an example in which only the time from when the train 4 arrives to when the train 4 passes is displayed.
In addition, for example, it is also possible to display for a predetermined time (for example, 3 seconds or 5 seconds) after the train 4 arrives. In short, the video display mode can be freely set by the transmission program.

The above description is of a method of creating a program list using the image input device 14 and storing the program list directly in the image memory 7, but it is also possible to use a program list created in advance. For example, a card including a memory called an electronic card in recent years can be used. In this case, an electronic card storing the program list shown in FIG. 19 together with the corresponding still image signals for a plurality of frames is used. In this case, the image memory 7 can be substituted for the image memory 7 by being inserted into the image memory control device 8.

Although the above-described video display operation has been described with respect to a case where a smooth moving image is displayed, depending on the expression of the video, it is sometimes more effective to take an awkward movement. Video display by so-called limited animation is also conceivable. In such a case, instead of displaying still images slightly different from each other at 30 frames per second, a still image signal of a smaller number of frames, for example, 15 frames, is displayed at a rate of 3 frames per second.
What is necessary is just to display 0 sheets.

In order to realize the limited animation, the image memory 7 is controlled so that a plurality of LED display devices 6 simultaneously use the still video signals of the image memory 7 in which continuous still images are stored.

For example, the first still video signal of the image memory 7 is transmitted to consecutive addresses (for example, A and B) of the buffer memory 10. Thereby, the buffer memory 10
The same still video signal is transmitted to two adjacent LED display devices. The second still video signal (2
The third still video signal is sent to consecutive addresses (for example, C and D) in the buffer memory 10 without using the video signal of the frame.

In this way, an image is displayed with half the image information as that of a normal moving image, so that the human eye sees a very awkward movement and exhibits a limited animation effect.

When the number of frames is reduced to １ ／, the operation described above is performed. The number of frames can be reduced to 1/3 or 1/4, and video can be displayed by simultaneously supplying video signals of the same frame to three or four LED display devices simultaneously. If the CPU 82 is used as the control means as described above,
Various video expressions can be realized only by controlling the address of the image memory.

In the above description, an LED display device has been described as an example of the display device 6.
Liquid crystal display (LCD display) instead of ED display
May be used. There are two types of liquid crystal display devices, a reflective type and a transmissive type. In either case, a strobe can be used as a blinking light source. In the case of a transmission type liquid crystal display device, a strobe is used as a backlight, and in the case of a reflection type liquid crystal display device, a strobe is simply used as a lighting device.

FIG. 20 shows an embodiment of a continuously operating video display device 1 using a liquid crystal display device (LCD device) 6 as a display device.

In FIG. 20, the description overlapping with FIG. 11 is omitted, but in this embodiment, a plurality of strobe lights 20 and a strobe drive circuit 21 for driving the strobe lights 20 are provided. An image blink control signal output from the image memory control device 8 via the signal line 12 is supplied to a strobe drive circuit 21, which controls blinking of the strobe light 20.

Even when the strobe light 20 is used, the flashing duty ratio is the same as that of the LED display device. Therefore, the flash drive circuit 21 responds to the flashing control signal represented by the duty ratio shown in FIG. Works.

In FIG. 20, one strobe light 20 is provided corresponding to each of the liquid crystal display devices 6.
The size of the liquid crystal display device 6 to be used is 30 to 50 cm in width.
In the case of the size of the order, two or more liquid crystal display devices, for example, 2
One liquid crystal display device can be shared so that one strobe light 20 is used.

Next, a further modification of the above-described embodiment will be described.

First, the above case is a case where a still image video signal which becomes a continuous operation for the passengers on the train 4 is supplied to the respective display devices 6. On the other hand, a still image video signal that looks completely still to the passenger can be supplied to each display device 6. In this case, exactly the same video signal is stored in the image memory 7. It is easy to understand that if a video signal is simultaneously supplied to the display device 6 under the same conditions as in FIG. 14, a completely still video is displayed outside the vehicle window as shown in FIG.

Advantages of supplying such a still image include, for example, a notice provided by a mobile business owner to a passenger (only text information or a combination of text information and a picture).
This is because, in the case of similar notices provided by various public institutions, it is easier for passengers to interpret the contents if they are still images. This still image may slightly move in the direction opposite to the traveling direction of the train.

Second, a train has been described as a moving object.
In addition, an elevator, escalator, moving sidewalk, amusement park ride, road, and the like may be used. FIG. 22 shows a case where the present invention is applied to an elevator, in which a plurality of display devices 6 are arranged in a vertical line in a cavity side wall 70 while keeping a constant interval (see FIG. 23). Elevator 7
By supplying the image display contents in reverse with the up and down movement of 2, the person riding the elevator 72 can see a continuous image or a still image whether climbing or descending. For other contents, refer to the above-described embodiment.

Even in the case of such an elevator 72, since there is a glass-elevating device capable of observing the outside scenery recently, in the case of an elevating device into which external light enters, the light absorber 104, the light Either the absorption layer 106 or the light shield 110 or a combination thereof is applied to the contrast improving means 100.

FIG. 24 shows that the person riding on the escalator 74 can enjoy a continuous image or a still image. A plurality of display devices 6 are installed on the wall along the getting on and off of the escalator 74 and the traveling speed is reduced. The video timing is adjusted accordingly. And in this case, the box-shaped structure 1
By mounting the LED display device 6 inside 12, external light and scattered light can be blocked.

Third, in addition to commercial images for advertisements and publicity, video sources to be displayed include texts such as notices of mobile business entities such as subways and notices of public institutions as described above. A video source mainly based on information is conceivable.

Fourth, in the example of FIG.
Although 0 is provided on the video signal supply device 9 side, the configuration may be such that the buffer memory 10 is built in each of the display devices 6 side.

In this case, only a single signal line such as a coaxial cable or an optical cable from the image memory 7 needs to be installed in a tunnel or the like. Each display device 6
The required information is transmitted and stored by packet communication. Control signals (display timing signal, power control signal, etc.) for each display device 6 can also be transmitted from the video signal supply device 9 side using the same cable line.

Fifth, it is assumed that the speed of the moving object is constant. However, the present invention can be applied to other cases. In that case, if the traveling speed is detected and the display timing on each display device 6 is controlled based on the detection signal, a continuous video or a still video can be viewed.

Sixth, when the continuous operation image display device according to the present invention is applied in a tunnel, the installation place is not limited. It may be near the entrance of the tunnel or in the center of the tunnel. It is also possible to install at multiple locations in the same tunnel. In this case, the video can be displayed in conjunction with each other, or the video can be displayed independently.
Further, a network for displaying images may be constructed between stations. Can respond to emergencies.

[0105]

As is apparent from the above description,
In the present invention, since the contrast improving means is provided,
Even in a place such as a train where light or external light enters, deterioration of image contrast can be prevented, so that a clear moving image can always be enjoyed.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing an embodiment when the present invention is used in a tunnel.

FIG. 2 is a configuration diagram of a main part showing an embodiment when a light absorber is used as a contrast improving unit.

FIG. 3 is a partial sectional view thereof.

FIG. 4 is a partial plan view thereof.

FIG. 5 is a configuration diagram of a main part showing an embodiment when a light absorbing layer is used as a contrast improving means.

FIG. 6 is a partial sectional view thereof.

FIG. 7 is a partial plan view thereof.

FIG. 8 is a configuration diagram of a main part showing an embodiment when a light shielding body is used as a contrast improving means.

FIG. 9 is a partial cross-sectional view of the used state.

FIG. 10 is a perspective view of a main part showing another embodiment of a light shield.

FIG. 11 is an explanatory diagram showing details of an embodiment when the present invention is applied to a continuously operating video display device.

FIG. 12 is an explanatory diagram showing a vehicle window state when a still image is displayed on the LED display device.

FIG. 13 is an explanatory diagram illustrating a relationship between a display period of a still image and a display stop period according to the embodiment of the present invention.

FIG. 14 is a schematic diagram showing a relationship between a train traveling in a tunnel and an LED display device.

FIG. 15 is an explanatory diagram illustrating details of contents of a memory according to the embodiment of this invention;

FIG. 16 is an explanatory diagram showing a main part related to control of the present invention.

FIG. 17 is a flowchart illustrating an example of control according to the embodiment of the present invention (part 1).

FIG. 18 is a flowchart illustrating an example of control according to the embodiment of the present invention (part 2).

FIG. 19 is an explanatory diagram illustrating details of contents of a memory according to the embodiment of this invention;

FIG. 20 is an explanatory diagram showing details when a liquid crystal display device according to another embodiment of the present invention is used.

FIG. 21 is a conceptual diagram showing a relationship between a stationary continuous motion video display device and a passenger, which is another embodiment of the present invention.

FIG. 22 is a conceptual diagram (front view) showing the relationship of the continuous operation image display device when the moving object is an elevator.

FIG. 23 is a side view of FIG. 22 showing a relationship of the continuous operation image display device when the moving object is an elevator.

FIG. 24 is a conceptual diagram showing the relationship of the continuous motion video display device when the moving body is an escalator.

FIG. 25 is a conceptual diagram of a conventional continuous operation video display device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Continuous operation image display apparatus, 2 ... Rail, 3 ...
..Traveling paths, 4, 4a, moving bodies and windows, 5, 5a
..Tunnel and wall surfaces, 6, 6A, 6B, 6C, 6D,
6E: LED display device and still image, 7: Image memory, 8: Image memory control device, 9: Video signal supply device, 10: Buffer memory, 11, 12,
..Transmission lines, 13, 15 monitor, 14 image input device, 20 strobe light, 21 strobe light drive circuit, 81 read-only memory (ROM), 82 ..Central processing unit (CPU), 83
... keyboard, 84 ... mouse, 85 ... detection sensor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hirofumi Maruyama 4-1-1, Asahimachi, Atsugi-shi, Kanagawa Prefecture Inside Sony Marketing Inc. (72) Inventor Ryuichi Okumura 6-7-35 Kitashinagawa, Shinagawa-ku, Tokyo No. within Sony Corporation (72) Inventor Hiroshi Chiko 6-35 Kita Shinagawa, Shinagawa-ku, Tokyo F-term within Sony Corporation (reference) 5C082 AA34 BA20 BA41 BD07 CA85 DA87 MM10

Claims (9)

[Claims] 1. A moving object carrying a person, a plurality of image display devices arranged along a traveling direction at a position visible from the moving object, and an image of the image display device blinking all at once. And a display control unit for causing the plurality of video display devices to increase the contrast of display images along the traveling direction of the moving object, the display control unit comprising: A continuous operation video display device provided in a part. 2. The continuously operating image display device according to claim 1, wherein a light absorber is provided as said contrast improving means. 3. The light absorbing body has a length substantially equal to a width determined by a length of the image display surface in a vertical direction with respect to a direction in which the moving body runs, at least on a plane substantially the same as the image display surface. 3. The continuously operating image display device according to claim 2, wherein the continuous operation image display device is selected such that: 4. The continuous operation image display device according to claim 3, wherein said light absorber is a light absorption plate attached to said wall surface. 5. The continuous operation image display device according to claim 3, wherein said light absorber is substantially black painted on said wall surface. 6. The continuously operating image display device according to claim 1, wherein said contrast improving means is a light shielding plate. 7. The continuously operating image display device according to claim 6, wherein the light shielding plate is provided in parallel with a traveling direction and at least on one side of the display surface so as to block external light. . 8. The continuous operation image display device according to claim 1, wherein said contrast improving means is formed by a box-shaped integral structure. 9. The continuously operating video display device according to claim 8, wherein the structure is provided for each of the video display devices or for each of a plurality of video display devices.