JPH0364075B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display device, and more particularly to a display device that displays a desired image using a light emitting array formed by aligning a plurality of point light sources.

[Prior Art] Skylighter (trademark) has been well known as a display device that utilizes the afterimage effect of the human eye.As shown in FIG. It consists of light-emitting rods arranged in an array, and when the light-emitting rods are swung once, the LED 20 is controlled to blink in accordance with a desired graphic pattern.

Therefore, by simply making one swing, this skylighter creates a desired image, for example, the letter "A", on the trajectory plane 200 for this one swing by utilizing the afterimage effect of the eye.
etc. can be easily displayed.

[Problems to be solved by the invention] However, such a skylighter can only display an image while a person swings the light-emitting rod in space, so the same image pattern is continuously displayed for a long time. Moreover, it had the disadvantage that it was not suitable for displaying long messages, etc.

Purpose of the Invention The present invention has been made in view of such conventional problems, and its purpose is to stably and continuously create a desired image pattern in space by utilizing the afterimage effect of the human eye. The object of the present invention is to provide a display device capable of displaying images.

[Means and effects for solving the problem] Furthermore, the first invention according to the present application provides a light source that is formed by arranging a plurality of point light sources and arranged at predetermined intervals along the rotation direction on the rotation locus plane. three color light emitting columns of red, green, and blue; a rotation driving means for rotationally driving each of these color light emission columns along the rotation locus plane; and a blinking control circuit that controls the point light sources of each color light emitting column to blink in synchronization with the rotation of the color light emitting column according to each brightness image pattern.

The present invention is characterized in that an arbitrary color image is displayed along the rotation locus plane of the color light emitting array.

Further, a second invention according to the present application provides a light emitting array formed by arranging a plurality of light emitting arrays formed by arranging a plurality of point light sources on a plurality of rotation locus planes having different radii around a common rotation axis. a rotary driving means for rotationally driving each of the light emitting columns along each corresponding rotation locus plane, and a blinking unit for controlling the point light sources of each light emitting column to blink in synchronization with the rotation of each light emitting column according to a predetermined stereoscopic image pattern. A control circuit.

The present invention is characterized in that an arbitrary stereoscopic image is displayed within the plane of the rotation locus of the light emitting array.

Furthermore, a third invention according to the present application provides three point light sources of red, green, and blue that are formed by arranging a plurality of point light sources and are arranged at predetermined intervals along the rotation direction on a common rotation locus plane. A group of color light emitting columns each arranged on a plurality of rotation locus planes having different radii around a common rotation axis, and each set of color light emitting columns is rotationally driven along the corresponding rotation locus plane. A rotation driving means and a point light source of each of the red, green, and blue color light emitting columns are controlled to blink in synchronization with the rotation of the light emitting column according to each red, green, and blue three-dimensional brightness image pattern for synthesizing a predetermined three-dimensional color image. a blinking control circuit;
including.

The present invention is characterized in that an arbitrary three-dimensional color image is displayed within the rotation locus plane of the color light emitting array.

[Embodiment] Next, a preferred embodiment of the display device according to the present invention will be described based on the drawings.

1. Configuration of the First Embodiment FIGS. 1 and 2 show a preferred embodiment of the display device according to the present invention. A rotating disk 14 is rotatably mounted and fixed via a shaft 12, and this rotating disk 14 is rotated at a desired rotational speed by driving a motor 16 that is housed within the base 10 and is directly connected to the rotating shaft 12. Driven.

In the embodiment, a rod 18 of a predetermined height is erected on the outer circumferential side of the upper surface of the rotary disk 14, and a plurality of point light sources 20 are linearly arranged on the outer surface of the rod 18 to form a light emitting array. 22 is formed.

In the embodiment, the light emitting array 22 is formed by arranging seven point light sources 20-1 to 20-7, and each of these point light sources 20 is an LED.

With the above configuration, the light emitting array 22
By driving the motor 16, the motor 16 is rotated along a cylindrical rotation locus plane with a radius r.

The characteristic feature of the present invention is that the light emitting array 22
The object of the present invention is to display a desired image on a rotation locus surface that is rotationally driven.

For this reason, the device of the present invention is provided with a blinking control circuit 24 that controls blinking of the light emitting array 22 according to a predetermined image pattern in synchronization with its rotation.

In the embodiment, the blinking control circuit 24 is provided within the rotating disk 14 and is electrically connected to the motor 16 and power source 38 using well-known means such as a slip ring.

Function The present embodiment has the above-mentioned configuration, and its function will be explained next.

When attempting to display a desired image, for example the letter "A", using the apparatus of this embodiment, the motor 16 is first driven, and the light emitting array 22 is moved to the third position along the cylindrical rotation trajectory surface 200. It is rotated as shown in the figure.

Then, in synchronization with the rotation of the light emitting array 22, each point light source 20 is sequentially blinked according to a predetermined image pattern, in this case, "A" every time the light emitting array 22 comes to a desired rotational position. Control.

That is, in the device of the embodiment, each time the light emitting array 22 comes to the position θ ₁ on the rotation trajectory plane 200, the point light source 20
-2 to 20-7 are turned on, and then the point light sources 20-1 and 20-4 are turned on every time the position θ ₂ θ ₃ θ ₄ is reached.
Each time the position of θ ₂ is reached, the point light sources 20-2 to 20-7 are controlled to turn on.

By doing so, a desired figure, in this case "A", is displayed on this rotation trajectory plane as shown in FIG. 4 due to the afterimage effect of the eye.

Further, by performing blinking control according to such a predetermined image pattern at each position on the rotation trajectory surface 200 of the light emitting array 22, an arbitrary message or figure consisting of a plurality of characters can be displayed on the rotation trajectory surface 200. Furthermore, by gradually moving the blinking control position in synchronization with the rotation of the light emitting array 22, the displayed image can be sequentially moved to the left or right. Furthermore, by changing the image pattern and performing the blinking control while synchronizing with the rotation of the light emitting array 22, it is also possible to display a simple moving image on the rotation trajectory surface 200.

In this embodiment, the light emitting array 22 is formed by arranging seven point light sources 20, but the number of these point light sources 20 may be increased or decreased as desired depending on the type of image to be displayed. is preferred.

Further, in this embodiment, the case where the light emitting array is driven along the cylindrical rotation trajectory surface 200 has been described as an example, but the present invention is not limited to this, and the light emission array 22 can be driven along the rotation trajectory surface of other shapes. It is also possible to drive rotationally along. In this case, for example, the rod 18 is bent along a predetermined curved line.
By arranging the point light sources 20 above to form a light emitting array 22, a predetermined image can be similarly displayed along the rotation locus plane of the rod 18.

Blinking Control Circuit Next, a specific example of the blinking control circuit 24 used in the embodiment shown in FIG. 1 will be described.

FIG. 5 shows a specific example of the blinking control circuit 24 used in this embodiment. A character generator 32 in which character data representing a character is stored in advance.

FIG. 6 shows the data contents of each character stored in the character generator 32. In the embodiment, the data representing each character is the storage address of the character data,
It consists of five pieces of data: character data representing the contents of the character, and a character call code for calling the character.

Then, by operating various input keys arranged on the keyboard 34 and selecting character data stored in the character generator 32, the device of the embodiment displays an image of the selected character in a light emitting array. An image is displayed on the rotation locus plane 200 of 22.

The specific configuration of a circuit according to an embodiment that selects a character stored in the character memory 32 and displays it on the rotation locus plane 200 will be described below in order.

(a) Setting the input mode In the embodiment, the keyboard 34 is provided with an up key 36a, a down key 36b, an input key 36c, and a mode switching key 36d.

The circuit of the embodiment initializes all conditions by turning on the power supply 38 and enters a state of waiting for an input from the input key 34.

Here, in order to set the circuit of the embodiment to the input mode, first the mode switching key 36d
Touch to operate.

As a result, the signal output from the mode switching key 36d is transmitted to the buffer 40 and the I/O port 42.
is input to the arithmetic circuit 44 via the arithmetic circuit 4
4 controls the entire circuit to input mode.

That is, when the input mode signal is input from the mode selector switch 36d, the arithmetic circuit 44 first selects the motor 1 via the motor driver 46.
6 is stopped, and a triangular mark "▲" indicating that the entire circuit is set to the input mode is displayed on the input monitor 50 via the monitor driver 48.

(b) Setting the display image Once the circuit is set to the input mode in this way, the next step is to set the image pattern to be displayed on the rotation trajectory plane 200. In the embodiment, this setting operation is performed by selecting arbitrary characters singly or in combination from a plurality of characters stored in the character generator 32.

That is, this setting operation is started by first touching the up key 36a or the down key 36b and selecting an arbitrary character from the character generator 32.

These up key 36a or down key 3
When 6b is touched, this signal is sent to the arithmetic circuit 44 via the buffer 40 and I/O port 42.
Each time such a signal is input, the arithmetic circuit 44 sequentially reads out the characters stored in the character generator 32 and displays them on the input monitor 50 via the monitor driver 48.

The operator, while looking at the input monitor 50, repeatedly touches the up key 36a or the down key 36b until a desired character is displayed on the input monitor 50.

Then, when the desired character is displayed on the monitor 50, the input key 36c is touched. As a result, the arithmetic circuit 44
The character call code of the character displayed on 0 is written and stored in the pattern memory 58 as display data.

In this manner, the apparatus of the embodiment completes the selection and setting operation for one character.

In addition, when setting an image pattern consisting of multiple characters using the device of the embodiment,
The selection and setting operation described above may be repeated for each of these characters.

For example, when setting an image pattern consisting of three characters "A", "B", and "C", first perform the selection setting operation for "A", then the selection setting operation for "B", and then the selection setting operation for "C". '' may be performed sequentially.

At this time, the up key 36a is used to search for characters in the order of "A", "B", "C", and "D" shown in FIG. D”
This is used when searching for characters in the order of "C", "B", and "A", that is, in the reverse direction. Therefore, if you select an image pattern consisting of the three characters "A", "B", and "C" using the up key 36a or the down key 36b, and then perform the setting operation using the input key 36c, the pattern memory is Character calling codes for displaying images in the order of "ABC" are written and stored in 58.

(c) Image display Once the image pattern setting is completed in this way and the character call code is written and stored in the pattern memory 58, the entire circuit is then set to display mode and the set image pattern is displayed. This is necessary.

In the embodiment, such setting of the display mode is performed by touching the mode changeover switch 36d, and the arithmetic circuit 44 switches the entire circuit to the display mode at the same time as the display mode signal of the mode changeover switch 36b is input. Control.

When the entire circuit is set to the display mode in this way, the arithmetic circuit 44 is connected to the I/O port 42,
The motor 16 is driven via a motor driver 46 to control the rotation of the rotating disk 14 at a constant speed.

As a result, the light emitting array 22 formed on the rod 18 is rotated at a constant speed along the cylindrical rotation trajectory surface 200.

At this time, the rotational position θ of the light emitting array 22 is determined by counting the output of the rotary encoder 54 provided on the motor 16 with a counter 56, and inputting the output of this counter 56 to the arithmetic circuit 44 via the I/O port 42. It is detected by

Based on the rotational position detection signal of the light emitting array 22 input in this way, the arithmetic circuit 44 operates the LED driver 5 according to the image pattern of the character set in the pattern memory 58.
9 to control each point light source of the light emitting array 22 to blink.

That is, the device of the embodiment sequentially reads corresponding character data from the character generator 32 based on the character call code stored in the pattern memory 58 in synchronization with the rotational position of the light emitting array 22, and The light emitting array 22 is controlled to blink via the LED driver 59 according to the data.

For example, when the character code "03H" representing the character "A" is set in the pattern memory 58, the arithmetic circuit 44 activates the character generator 32 in synchronization with the rotational position θ of the light emitting array 22. The character data representing "A" is "3FH", "44H", "44H", "44H",
They are read out in the order of "3FH" and the light emitting array 22 is controlled to blink according to the timing chart shown in FIG. Note that the H at the end is a code used to represent a hexadecimal number.

That is, the arithmetic circuit 44 operates the character generator 3 every time the light emitting array 22 comes to the rotational position θ ₁ .
Read the data of “3FH” from 2. This "3FH" data becomes "00111111" when converted into a binary number. Here, bit 7
.about.1 correspond to the point light sources 20-1 to 20-7, respectively.

The arithmetic circuit 44 outputs a pulse having a width L that turns on the point light sources 20 to 2-20-7 based on the character data "00111111" converted into a binary number.

In addition, the arithmetic circuit 44 reads the character code "44H" from the character generator 32 every time the light emitting array 22 comes to the position of the rotation angle θ ₂ , θ ₃ , or θ ₄ and similarly converts it into a binary number. 7th
As shown in the figure, a pulse with a width L that turns on the point light sources 20-1 and 20-4 is output.

Furthermore, the arithmetic circuit 44 reads the character code "3FH" from the character generator 32 every time the light emitting array 22 comes to the position of rotation angle θ ₅ ,
Similarly, a pulse having a width L that turns on the point light sources 18-2 to 18-7 is output.

Therefore, in _the device of the embodiment, when the light emitting array 22 rotates, each point light source 20 of the light emitting array 22 is controlled to blink as shown in _FIG . , the letter "A" can be displayed as an image using the afterimage effect of the eyes.

Furthermore, by setting a message consisting of a plurality of characters in the pattern memory 58, this setting message can be continuously displayed as an image along the rotation locus plane 200 of the light emitting array 22.

Furthermore, in order to change the display contents in the display device of the embodiment, it is sufficient to touch the mode changeover switch 36d again and set a new image pattern according to the procedure described above.

Configuration of Second Embodiment FIGS. 8 and 9 show a preferred embodiment of the second invention according to the present application. Three rods 18R, 18G, at a predetermined height with an interval of
18B is erected. A plurality of red, green and blue point light sources 20R, 20G and 2 are provided on the outer surface of each of these rods 18R, 18G and 18B, respectively.
0B are aligned to form three color light emitting columns 22R, 22G and 22B of red, green and blue.

With the above configuration, when the motor 16 is driven, the red
The three color light emitting arrays 22R, 22G and 22B of green and blue are rotationally driven along a cylindrical rotation trajectory surface 200 with a radius r.

A characteristic feature of the present invention is that a desired color image is displayed on the rotation trajectory surface 200 on which the color light emitting array 22 is rotationally driven in this manner.

As is well known, it is possible to synthesize any color by using the three colors of red, green, and blue, and therefore, three color light emissions that are rotationally driven along the same rotation trajectory plane 200 are possible. Rows 22R, 22G
and 22B at the same rotational position with a predetermined combination of brightness, a desired color can be synthesized.

The apparatus of the present invention displays a color image using such a principle of color synthesis, and therefore, the red, red, and blue lights that synthesize a predetermined color image in synchronization with the rotation of each of the color light emitting columns 22, Each color light emitting column 22R, 2 according to each brightness image pattern of green and blue
Blinking control circuit 24 that controls blinking of 2G and 22B
has been established.

Function The present embodiment has the above-mentioned configuration, and its function will be explained next.

When using the apparatus of this embodiment to display an image of a desired color, for example, a white letter "A", the motor 16 is first driven.

As a result, the three color light emitting columns 22R, 22G, and 22B of red, green, and blue rotate on the same cylindrical rotation locus surface 200 with a phase difference of 120 degrees.

In synchronization with the rotation of the light emitting array 22, each time the light emitting arrays 22R, 22G, and 22B come to the same rotational position, each point light source 2 of the light emitting array 22
0 is controlled to blink according to a predetermined image pattern, in this case "A".

By doing this, the three red, green, and blue
The red, green, and blue letters "A" drawn by the color light emitting arrays 22R, 22G, and 22B of the book are superimposed and synthesized at the same location on the rotation trajectory surface 200.

Therefore, by adjusting the brightness of red, green, and blue at this time, the letter "A" can be displayed as a color image with any color, and when displaying the white letter "A", The red, green, and blue letters "A" having the same brightness may be superimposed and synthesized.

For example, when displaying the yellow letter "A", the red and green letters "A" are displayed with the same brightness, and the blue letter "A" is displayed with the brightness of 0.
All you have to do is combine the colored letter "A".

In this way, according to the apparatus of this embodiment, a color image having a desired color can be displayed on the rotation trajectory plane 200 of the color light emitting array 22.

Blinking Control Circuit FIG. 10 shows a specific example of the blinking control circuit 24 used in the device of this embodiment, and is the same as the blinking control circuit 24 of the first embodiment shown in FIG. The same reference numerals are given to the members, and the explanation thereof will be omitted.

In the blinking control circuit 24 of this embodiment, the character data shown in FIG. 6 is stored in the character generator 32, and in addition to this, color data representing eight types of colors shown in FIG. 11 are stored. .

Here, as shown in FIG. 11, each color data stored in the character generator 32 includes a color call code, a color storage start address, and the red, green, and blue colors necessary to synthesize the desired color. It is composed of each luminance data.

In addition to the four keys 36a to 36d described above, there is a color key 36 on the input board 34 of the embodiment.
e is provided, and up or down keys 36a, 36b are provided when selecting and setting the character mentioned above.
is touched to set the character selection, and the color key 36e is also touched to set the color of the selected character.

After selecting and setting the character and the color in this way, the user then touches the input key 36c. As a result, the character calling code of the set character is written and stored in the pattern memory 58, and at the same time, the color calling code of the selected color is written and stored in the color memory 60.

Therefore, for example, if a white character "A", a yellow character "B", and a red character "C" are selected and set as an image pattern, three character calling codes "03H", "04H", and "05H" are stored in the pattern memory 58. Three color call codes "07H", "06H", and "04H" are written and stored in the color memory 60 corresponding to each of these character call codes.

After setting the image pattern in this manner, when the mode switching key 36d is touched, the arithmetic circuit 44 switches the entire circuit to the display mode, and displays the red, green, and blue colors according to the timing chart shown in FIG. Each color light emitting column 22R, 22
G and 23B are controlled to blink according to predetermined red, green, and blue brightness image patterns.

That is, the arithmetic circuit 44 reads a character representing the image pattern set in the memory 58 from the character generator 32, and adjusts red, green, and blue so that the same image based on this image pattern is displayed superimposed at the same location. each color light emitting column 22
Controls blinking of R, 22G and 22B. and,
At the same time, the arithmetic circuit 44 reads each red, green, and blue luminance data necessary to synthesize the colors set in the memory 60 from the character generator 32, and generates each red, green, and blue image pattern. Perform brightness adjustment.

By doing this, the color light emitting array 22
A desired color image can be displayed satisfactorily on the cylindrical rotation trajectory surface 200.

For example, first, when displaying a color image of the white character "A", the character call code for the character "A" is read from the memory 58, and at the same time, the color call code for the color "white" is read from the memory 60. . Based on the code read in this way, the color light emitting columns 22R, 22G and 22B are
The blinking control is performed at the following timing.

First, the arithmetic circuit 44 reads the character data of the letter "A" from the character generator 32 into an image according to the timing chart shown in FIG. 12 based on the character read code "03H" written and stored in the pattern memory 58. Read out sequentially as a pattern.

Then, in accordance with the image pattern read out in this manner, the arithmetic circuit 44 performs the following operation every time each of the red, green, and blue color light emitting columns 22R, 22G, and 22B comes to the rotational position θ=0 to 20 degrees. Control flashing.

By doing this, the red character "A" is displayed as an image every time the red color light emitting array 22R comes to the rotational position θ=0 to 20 degrees.

Similarly, the green color light emitting column 22G is delayed by 120 degrees in phase with respect to the red color light emitting column 22R.
= Every time a rotational position of 0 to 20 degrees is reached, a green letter "A" is similarly displayed as an image. Similarly,
The blue color light emitting line 22B is delayed in phase by 240 degrees with respect to the red light emitting line 22R, and displays the blue letter "A" as an image every time it reaches a rotational position of θ=0 to 20 degrees.

Therefore, the red, green, and blue letters "A" are superimposed and displayed at the rotational position of θ=0 to 20 degrees. At this time, in order to display the letter "A" in the set color, the brightness of the red, green, and blue letters "A" is individually adjusted according to the color call code set in the color memory 60.

Such brightness adjustment, for example, using the timing chart shown in FIG.
There are two possible methods: a method of controlling the amplitude H of each pulse that drives 0, and a method of controlling the width L of the pulse.

Here, the method of adjusting the brightness by controlling the amplitude H of the pulse has a problem in that the peripheral circuitry used is complicated because it is necessary to perform analog control on each pulse voltage.

Therefore, in the circuit of the embodiment, the latter method is used, and a method of duty-controlling the pulse width L for driving the point light source 20 is adopted.

For example, when displaying the white letter "A", when controlling the blinking of each of the red, green, and blue color light emitting columns 22R, 22G, and 22B, it is simultaneously stored in the color memory 60. color calling code, in this case "07H"
Based on this, red, green, and blue brightness data "FF", "FF", and "FF" are sequentially read out from the character generator 32 according to the timing shown in FIG. 5
Input to 9R, 59G, 59B.

As a result, the drive pulses shown in FIG. 7 are duty-controlled according to the duty control pattern shown in FIG. 13, and the brightness of the red, green, and blue letters "A" is adjusted.

Therefore, on the rotation locus plane 200 of the light emitting array 22, the color call code, in this case, the white character "A" designated by "07H" is displayed in color.

In this way, the device of the embodiment can display a motor image of a desired color on the rotation locus plane of the light emitting array 22.

As another method, the blinking control circuit 16 of the embodiment has the duty control characteristics shown in FIG. 13 between the red, green, and blue LED drivers 59R, 59G, and 59B and the I/O port 42. This can be achieved by providing a pulse oscillator 62 and generating the pulses shown in FIG. 13 in accordance with the input from the arithmetic circuit 44 using hardware.

Third Embodiment Next, a third embodiment of the invention according to the present application will be described based on the drawings. Incidentally, members corresponding to those in the first and second embodiments are designated by the same reference numerals, and their explanations will be omitted.

Structure FIG. 14 shows a preferred embodiment of the third invention according to the present application, and the display device of the embodiment has a plurality of rods 18 of a predetermined height on a rotating disk 14 in a radial direction. They are erected in a spiral pattern at predetermined intervals.

A plurality of point light sources 20 are arranged substantially linearly on the outer surface of each of these rods 18 to form a light emitting array 22.

With the above configuration, when each motor 16 is driven to rotate the rotary disk 14 at a predetermined speed, each light emitting array 22 formed on each rod 18 is generated along a plurality of cylindrical rotation locus surfaces with different radii. They are each driven to rotate.

A feature of the present invention is that a desired three-dimensional image is displayed using the light emitting array 22 that is rotationally driven along a plurality of cylindrical rotation locus planes having different radii.

Therefore, in the device of the present invention, each of the light emitting columns 22
A blinking control circuit 24 is provided which controls the point light sources 20 of each light emitting column 22 to blink in synchronization with the rotation of the light emitting column 22 in accordance with a predetermined three-dimensional image pattern.

Function The present embodiment has the above configuration, and its function will be explained next.

When displaying a desired three-dimensional image, such as a three-dimensional "flower" image, using the apparatus of this embodiment, first, the motor 16 is driven, and each light emitting column 2
2 is rotationally driven along a corresponding cylindrical rotation locus plane.

Then, in synchronization with the rotation of each light emitting column 22, each time each light emitting column 22 comes to a desired rotational position, each point light source 20 is converted into a predetermined three-dimensional image pattern, in this case a three-dimensional image representing a flower. Blinking is controlled sequentially according to the image pattern.

By doing so, a stereoscopic image representing a flower is displayed across a plurality of rotation locus planes due to the afterimage effect of the eye.

Blinking Control Circuit Next, a specific example of the blinking control circuit 24 used in this embodiment will be described. Incidentally, members corresponding to the circuit shown in FIG. 5 are given the same reference numerals and their explanations will be omitted.

FIG. 15 shows a specific example of the blinking control circuit 24 used in this embodiment,
The blinking control circuit 24 of the embodiment includes a plurality of light emitting columns, seven light emitting columns 22-1 and 22-2 in the embodiment.
...22-7 to LED driver 59-1, 59-2,
... 59-7, blinking is controlled using a time shearing method.

Here, in the apparatus of the embodiment, a stereoscopic image character is set in the character generator 32 as follows.

First, a three-dimensional image to be registered as a character is decomposed along each cylindrical rotation locus surface with a different radius corresponding to the light emission arrays 22-1, 22-2...22-7,
Each section data of the decomposed three-dimensional image is stored in each light emitting column 22-1, 22- in the character generator 32.
2, . . . 22-7 and is registered in the character generator 32 as data representing the corresponding image pattern.

By doing this, the circuit of the example becomes
Desired character data is read from the character generator 32, and each light emitting column 22-1, 22-
2,...22-7 are controlled to flash in synchronization with the rotation.

Therefore, each light emitting column 22-1, 22-2,...22
Images corresponding to each position of the three-dimensional image are displayed on the rotation trajectory plane of -7, and these images are combined to display a desired three-dimensional image, for example, a three-dimensional image as shown in FIG. 16. .

In this way, according to the device of the embodiment, it is possible to display a stereoscopic image across a plurality of cylindrical rotation locus planes by utilizing the afterimage effect of the eye.

Fourth Embodiment Next, a fourth embodiment of the invention according to the present application will be described based on the drawings. Incidentally, members corresponding to the first to third embodiments are given the same reference numerals and their explanations will be omitted.

Configuration FIG. 17 shows a preferred embodiment of the fourth invention according to the present application.

The display device of the embodiment includes three color light emitting column groups 100R, 100G and 1 of red, green and blue.
00B on the rotating disk 12 with a phase difference of 120 degrees.

In this embodiment, each color light emitting column group 100
R, 100G and 100B are formed similarly to the third embodiment shown in FIG. 14 using seven color light emitting columns 22-1, 22-2, . . . 22-7, respectively.

With the above configuration, when the motor 16 is driven, three color light emitting arrays 22 of red, green, and blue are emitted along each cylindrical rotation locus surface having a different radius.
The sets R, 22G, and 22B are each rotated.

The characteristic feature of the present invention is that the color light emitting array group 1 is rotationally driven along a plurality of rotation locus planes as described above.
The objective is to display a desired three-dimensional color image using 00R, 100G and 100B.

For this reason, the device of the present invention synchronizes with the rotation of the light emitting array 22 and performs red, green, and blue stereoscopic brightness image patterns necessary for synthesizing a predetermined stereoscopic color image. Each color light emitting column group 100
A blinking control circuit 24 is provided to control blinking of R, 100G, and 100B.

Function The present embodiment has the above configuration, and its function will be explained next.

When using the apparatus of this embodiment to display a desired three-dimensional color image, for example, the motor 16 is first driven to drive each light emitting array 22 to rotate along the corresponding cylindrical rotation locus plane.

Then, each color light emitting column group 100 like this
In synchronization with the rotation of lights R, 100G, and 100B, each light emitting column group 100R, 100G, and 100B is sequentially controlled to blink in accordance with a predetermined stereoscopic brightness image pattern necessary for synthesizing a stereoscopic color image.

By doing so, it is possible to display a desired three-dimensional color image across a plurality of rotation locus planes by utilizing the afterimage effect of the eye.

Blinking Control Circuit Next, a specific example of the blinking control circuit 24 used in this embodiment will be described. Note that members corresponding to the circuits shown in FIGS. 5, 10, and 15 are designated by the same reference numerals, and their explanations will be omitted.

FIG. 18 shows a specific example of the blinking control circuit 24 used in this embodiment, and the blinking control circuit 24 of the embodiment is the circuit used in the second embodiment shown in FIG. The red, blue, and green color light emitting columns 22R, 22G, and 22B, which are formed in substantially the same manner as the above and existing on the same cylindrical rotation locus plane, are set as one set, and a three-dimensional color image is synthesized from each set of color light emitting columns. It seems like the flashing is controlled.

That is, when registering a desired three-dimensional color image character in the character generator 32, the three-dimensional color image is registered in each light emitting column 22-1, 22-1.
-2,...22-7 are decomposed into components on the cylindrical rotation locus plane. Then, the cross-sectional data of the decomposed three-dimensional color image is stored in each light emitting column 22-1, 22-1.
Character generator 32 as character data and color data corresponding to -2,...22-7
Register within.

Then, the characters and colors stored in this manner are sequentially read out from the character generator 32 corresponding to each cylindrical rotation trajectory surface, as in the second embodiment, and are displayed on a plurality of rotation trajectory surfaces. Display color images. By doing so, a desired three-dimensional color image is displayed on the rotating disk 14 as a composite image of images expressed on a plurality of cylindrical rotation locus planes.

As explained above, the display device according to each of the first to fourth embodiments can stably and continuously display a desired image or stereoscopic image by utilizing the afterimage effect of the human eye. , it is possible to easily and quickly change and switch the display images.

Furthermore, the display devices according to the first and second embodiments can reliably display messages consisting of long sentences, and by sequentially changing the displayed images at predetermined timing,
Images can be displayed dynamically.

Further, the display devices according to the third and fourth embodiments can display a stereoscopic image having a desired shape, and can move the stereoscopic image by sequentially changing the displayed stereoscopic image at a predetermined timing. It is also possible to display the

Therefore, the display device according to the present invention can be used for various purposes, such as as a window display or a message board, and can also be used as a variety of interior decoration items, for displaying menus in restaurants, etc., and for various other purposes. It becomes possible to use it widely.

[Effects of the Invention] As explained above, according to the present invention, a desired two-dimensional or three-dimensional image is stably and continuously displayed in space as a monochromatic or color image by utilizing the afterimage effect of the human eye. be able to.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing a preferred first embodiment of the display device according to the present invention, FIG. 2 is a plan explanatory diagram of the embodiment shown in FIG. 1, and FIG. An explanatory diagram of the cylindrical rotation locus plane of a rotationally driven light emitting array, FIG. 4 is an explanatory diagram showing the image display operation of the device shown in FIG. 1, and FIG. 5 is an explanatory diagram showing the blinking control used in the device shown in FIG. 1. A specific circuit diagram of the circuit, FIG. 6 is an explanatory diagram of data stored in the character generator of the circuit shown in FIG. 5, and FIG. 7 is an explanatory diagram of the timing chart and image of the circuit shown in FIG. 5. , FIG. 8 is an external perspective view showing a second preferred embodiment of the present invention, FIG. 9 is an explanatory plan view of the device shown in FIG. 8, and FIG. 10 is a blinking control used in the device shown in FIG. 8. Circuit diagram showing a specific example of the circuit, No. 11
The figure is an explanatory diagram of color data stored in the character generator of the circuit shown in Figure 10, and Figure 12 is a timing chart diagram of the circuit shown in Figure 10.
Fig. 13 is an explanatory diagram of the operation of the pulse oscillator used in the circuit of Fig. 10, Fig. 14 is an explanatory diagram showing a third preferred embodiment of the device according to the present invention, and Fig. 15 is the device shown in Fig. 14. 16 is an explanatory diagram of a three-dimensional image formed using the device shown in FIG. 14, and FIG. 17 is a circuit diagram showing a specific example of a blinking control circuit used in
18 is an explanatory diagram showing a preferred fourth embodiment of the device according to the present invention; FIG. 18 is a circuit diagram showing a specific example of the blinking control circuit used in the device shown in FIG. 17;
FIG. 9 is an explanatory diagram of a conventionally used skylighter. DESCRIPTION OF SYMBOLS 12... Rotating shaft, 14... Rotating disk, 16... Motor, 20... Point light source, 22... Light emitting column, 24... Blinking control circuit.

Claims (1)

[Claims] 1. Three color light emitting columns of red, green, and blue formed by arranging a plurality of point light sources and arranged at predetermined intervals along the rotational direction on the rotation trajectory surface; a rotary drive means for rotationally driving each color light emitting column along the rotation locus surface; and a rotary driving means for rotationally driving each color light emitting column along the rotation locus plane; What is claimed is: 1. A display device comprising: a blinking control circuit that controls blinking of a point light source in a light emitting column; 2. The display device according to claim 1, wherein the rotation drive means rotationally drives the color light emitting array along a cylindrical rotation locus plane. 3. A light emitting array group formed by arranging a plurality of light emitting arrays formed by arranging a plurality of point light sources on a plurality of rotation locus planes having different radii around a common rotation axis; a rotational driving means that rotates along a rotation locus plane; and a blinking control circuit that controls the point light sources of each light emitting column to blink in synchronization with the rotation of each light emitting column according to a predetermined three-dimensional image pattern, A display device characterized by displaying a three-dimensional image. 4. The display device according to claim 3, wherein the rotation driving means rotationally drives each light emitting column along a corresponding cylindrical rotation locus plane. 5 A set of three color light emitting columns of red, green, and blue, which are formed by arranging a plurality of point light sources and are arranged at predetermined intervals along the rotational direction on a common rotational locus plane, are arranged around a common rotational axis. A group of color light emitting columns each arranged on a plurality of rotation locus planes having different radii, a rotation driving means for rotationally driving each set of color light emission columns along the corresponding rotation locus plane, and a predetermined three-dimensional color image. a blinking control circuit that controls the point light sources of each of the red, green, and blue color light emitting columns to blink in synchronization with the rotation of the light emitting column according to each of the red, green, and blue stereoscopic brightness image patterns that synthesize the red, green, and blue color light emitting columns; A display device characterized by displaying a three-dimensional color image. 6. The display device according to claim 5, wherein the rotation driving means rotationally drives each set of color light emitting arrays along a corresponding cylindrical rotation locus surface.