JPH0713500A - Manual turning display device - Google Patents

Abstract

PURPOSE:To provide the manual turning display device constituted in such a manner that the entire part of the device can be repetitively rotated by a simple operation in the state of directing the surface of a light emitting cell array toward a specified direction and that a prescribed image can be stably displayed within the plane of rotation even if the fluctuation in the speed of the rotation is large. CONSTITUTION:This manual turning display device has a device body 1 which is arranged linearly with the many light emitting cells 3 in its surface part along a longitudinal direction in the form of a slender and nearly bar form, an operating fulcrum member 4 which is freely rotatable around the axial line in the direction orthogonal with the longitudinal direction of this device body 1, a rotation detecting means which obtains the relative rotating position information and rotating speed information of the operating fulcrum member 4 with respect to the device body 1 by detecting the marks of rotating markers, a storage means which stores the image data to be displayed and a display control means which successively reads out the image data from the storage means in synchronization with the detection signals by this rotation detecting means and drives the light emitting cell array 2 according to the image data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual rotary display device for displaying an image due to an afterimage effect on a rotating surface of a finger by rotating the finger.

[0002]

2. Description of the Related Art The following structure is disclosed in Japanese Utility Model Publication No. 3-50541 as a rotary display device utilizing the afterimage effect of the eye. This conventional device is attached to a rotating body such as a wheel of a bicycle, and a large number of light emitting elements are linearly arranged in the radial direction with respect to the center of rotation. When the device rotates with the wheels, the light emitting element array is rotationally scanned. By the combination of the rotational scanning of the light emitting element array and the time-series emission control of each light emitting element, an image due to the afterimage effect is displayed so as to float in the space of the rotational scanning surface.

That is, in synchronization with the rotational scanning of the light emitting element array, the image data to be displayed is read out from the memory, and the respective light emitting elements are controlled to blink according to the image data. Correctly synchronizing the rotation of the device with the display control is extremely important for stable display of an intended image.

In the above conventional apparatus, a position signal output means such as a magnet is attached to a support frame (bicycle frame) that supports a rotating body (wheel of a bicycle), and the rotating body is provided with a position close to the position signal outputting means. There is provided a signal generating means for generating a rotation synchronizing signal each time it passes. That is, one rotation synchronization signal is generated each time the rotating body makes one rotation. Then, a predetermined time Δt has elapsed since the rotation synchronization signal was generated.
After that, the display output operation starts. Further, the latest average cycle of the rotation synchronization signal (inversely proportional to the rotation speed) is always obtained, and the delay time Δt is variably set so as to be proportional to the cycle. As a result, an image is displayed at a specific rotation phase position even if the rotation speed changes.

A display device in which a light emitting element array is rotationally scanned by a motor at a constant number of rotations (for example, Japanese Patent Laid-Open No. HEI-2)
No. 213892), the feedback-type synchronous control as described above is not always necessary, but a display device for a vehicle whose rotation speed fluctuates irregularly, such as a wheel of a bicycle, does not necessarily have a stable display. Synchronous control is required.

The following toys having the same display principle as described above have been conventionally known. While holding one end of the elongated rod-shaped display device by hand and repeating the swing to the left and right, the light emitting cell array is reciprocally scanned within the fan-shaped surface. Further, inside the device, signal processing of sequentially reading image data stored in the memory and blinking each light emitting cell according to the image data is repeated at a constant speed. If the processing speed of the display control coincides with the speed and phase of the swing motion of the apparatus, the intended image appears on the scanning surface.
If the swing motion is not in the display control, the light emitting cells only seem to blink irregularly,
Even if you see the image, it is greatly distorted, partly broken, or inverted.

[0007]

The rotary display device to which the present invention is directed is a device that is held and rotated by a person, and is intended mainly for use as a toy. That is, by manually swinging a long and narrow rod-shaped device, the light-emitting cell array is rotated and scanned, and an image is displayed in the space of the rotation surface.

On the other hand, the above-mentioned conventional manual swing type toy type display device has the following problems in addition to the above problem that stable display cannot be performed. Since the reciprocating swing is manually performed, the scanning range of the light emitting cell array is narrower than that of the rotary type. Therefore, it is possible to grasp one end of the rod-shaped device with a hand and swing it around in one direction. However, in that case, it is difficult to rotate with the mounting surface of the light emitting cell array always oriented in a fixed direction, and it is also difficult to reduce the radius of rotation to a certain extent or more.

Further, in the manual rotary type display device to which the present invention is applied, the device is rotated so that a person swings the device by hand. Therefore, the rotation of the device in this case is more than that of the wheel of the bicycle of the prior art. Is further unstable, and due to the relationship with gravity, the speed fluctuation during one rotation tends to be large. Therefore, even if some kind of rotating body support frame is provided and the conventional synchronization control mechanism as described above is adopted, it is possible that the rotation operation with large speed fluctuation and the display control may not be correctly synchronized, and the expected display is displayed. You may not be able to do it.

The present invention has been made on the basis of the technical background as described above, and a basic first object thereof is to repeat the entire device by a simple operation with the surface of the light emitting cell array oriented in a certain direction. It is easy to do the manual operation of rotating,
(EN) It is an object to provide a manually rotatable display device that can be easily operated by a child to display an image as intended.

A second object of the present invention is to provide a manually rotatable display device capable of stably displaying a predetermined image on the rotating surface even if the speed of the device rotated by manual operation is large. To provide.

Further, a third object is to realize a function of reading an image arbitrarily created by a user into the apparatus and making the image data as a display object with an inexpensive structure.

[0013]

According to a first aspect of the present invention, there is provided a manual rotary type display device, which is in the form of an elongated rod and has a large number of light emitting cells linearly arranged in the longitudinal direction on its surface portion. The device main body, an operation fulcrum member which is attached to one end portion of the device main body through an appropriate bearing mechanism and is rotatable around an axis line in a direction orthogonal to the longitudinal direction of the device main body, and the operation inside the device main body. A rotation detection unit that obtains information on a relative rotational position and rotation speed of the operation fulcrum member with respect to the apparatus body by detecting a mark of a rotation marker that rotates integrally with the fulcrum member; The storage means for storing the image data to be displayed by the rotational scanning of the light emitting cell array and the image data from the storage means in synchronization with the detection signal from the rotation detection means. Sequentially reading out the data, in which a display control means for driving said light emitting cell array in accordance with the image data.

A manual rotary type display device according to a second aspect of the present invention is characterized in that a plurality of marks for dividing one rotation into a plurality of marks are formed on the rotation marker in the rotation detecting means.

In addition to the structure of the first or second invention, the manual rotary display device according to the third invention is arranged close to and parallel to the light emitting cell array, and emits light from the light emitting cell. The photoelectric conversion cell array optically arranged to receive the reflected light from the original illuminated by the light source, the light emission control of the light emitting cell and the output read control of the photoelectric conversion cell are synchronized to each other, and First control means for reading a linear image on the original along the conversion cell array, and the light emitting cell array and the photoelectric conversion cell array are rotationally scanned on the original about the operation fulcrum member, The first control means is repeatedly operated in synchronization with the detection signal from the rotation detection means, and the image data sequentially obtained from the photoelectric conversion cell array is operated by the operation. The is that a second control means for storing in the memory means.

[0016]

The operation fulcrum member, which is rotatable with respect to the main body of the apparatus, is fixed by a human finger. Then, the apparatus main body becomes rotatable with respect to the operation fulcrum member. The apparatus main body is in the form of an elongated rod, and the operation fulcrum member is provided at one end thereof. Therefore, when the device main body hangs around the operation fulcrum member fixed with fingers, the device main body easily rotates around the operation fulcrum member when the fingers are slightly rotated in that state. By this operation, the light emitting cell array can be repeatedly rotationally scanned in space with the light emitting cell array being oriented in a fixed direction.

Since the main body of the apparatus is rotating with respect to the operation fulcrum member during the above operation, the rotation position information and the rotation speed information are obtained from the rotation detecting means. The display control means operates in synchronization with the rotation detection signal, and time-series light emission control of the light emitting cell array is performed according to the image data stored in the storage means. As a result, the image due to the afterimage effect is stably displayed in space in synchronization with the rotational position and speed of the light-emitting cell array that is rotationally scanned.

According to the structure of the second aspect of the invention, in particular, the rotation detecting means detects the fluctuation of the rotation speed of the main body of the apparatus during one rotation, and the display control means operates in accordance with the detection signal. The display is stable even if the rotation speed of fluctuates greatly during one rotation.

In the manual rotary display device of the third invention, arbitrary image data can be stored in the storage means as follows.

An arbitrary image is drawn on paper with a felt pen, for example. The device main body is placed on the paper, and the front surface, in which the light emitting cell array and the photoelectric conversion cell array are arranged in parallel, faces the paper surface. Then, by fixing the operation fulcrum member with fingers and rotating the main body of the apparatus along the plane of the drawing with the finger as a center, the reading scanning is performed similarly to the rotational scanning at the time of display. Also at this time, a detection signal is obtained from the rotation detecting means. The first control means and the second control means operate in synchronization with the detection signal, and an image on the paper illuminated by the light emitting cell array is read by the photoelectric conversion cell array in a dot-decomposed form. The image data is stored in the storage means.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic form of a manual rotary type display device according to an embodiment of the present invention. The main body case 1 has a flat rod shape, and 16 LEDs (light emitting diodes) 2 are arranged in a straight line at regular intervals on the front part of the main body case 1 and attached to the main body case 1. PTs (phototransistors) 3 are arranged and attached in a straight line, and the LED array 2 and the PT array 3 are arranged in parallel at a predetermined interval. The arrangement pitch of the PT array 3 is twice the pitch of the LED array 2, and one PT element 3 is located next to the two LED elements 2.

A rotary ring 4 corresponding to the operation fulcrum member is mounted on the base end of the main body case 1. The mounting structure of the rotating ring 4 is shown in detail in FIG. The base end portion of the main body case 1 itself is formed in a ring shape,
The rotary ring 4 is fitted in the inner circumference of the ring.
The rotary ring 4 integrally has flanges 4a and 4b at both ends, and the flanges 4a and 4b are in contact with the outside of the front surface and the outside of the back surface of the body case 1, respectively. A sliding member 5 made of a low friction member such as Teflon is provided at a portion of the main body case 1 where the rotary ring 4 abuts so that the rotary ring 4 smoothly rotates with respect to the main body case 1.

The inner diameter of the rotating ring 4 is such that a person's finger just fits in it. When using the display device, the finger is passed through the rotating ring 4, the finger is made substantially horizontal, and the device is used as a fulcrum. The whole is hung. Then, the hand is moved so as to draw a small circle with the fingertip, and the body case 1 is rotated around the finger passed through the ring 4. At this time, the rotary ring 4 is fixed to the finger, and the main body case 1 rotates around the ring 4. That is, the ring 4 rotates relative to the body case 1.

In order to detect the relative rotation of the ring 4 with respect to the main body case 1, the following rotation detecting means is provided. As shown in FIG. 2, a rotary marker plate 6 spreading like a flange is fixed to the outer periphery of the cylindrical portion of the rotary ring 4 penetrating the inside of the main body case 1. As shown in FIG. 3, optical marks are formed on the rotary marker plate 6 along the circumference at intervals of 10 degrees. The marks include one zero point mark (Z mark) in one turn and fine scale marks (P marks) at intervals of 10 degrees.

As shown in FIG. 2, the main body case 1 has a built-in wiring board 7 on which the LED array 2 and the PT array 3 and the circuits described later are mounted, and the end portion of the board 7 is composed of a photo interrupter. The rotation sensor 8 is attached. As shown in FIG. 4, the photo interrupter (rotation sensor) 8 is composed of a pair of a light emitting diode 8a and a phototransistor 8b, which face the mark row of the rotary marker plate 6 as shown in FIG. To detect.

As shown in FIG. 4, the control and signal processing of the device including the light emission control of the LED array 2 and the output reading control of the PT array 3 are all performed by a one-chip microcomputer (hereinafter referred to as a microcomputer) 9. The display data is stored in the memory 10 in a bitmap format,
It is accessed by the microcomputer 9. A change in the output signal of the rotation sensor 8 due to the rotation of the rotation marker plate 6 is a rotation detection signal, and this signal is input to the microcomputer 9 and becomes a basic signal of operation timing. The switch 11 also functions as a power switch of the apparatus and an operation mode changeover switch, and a signal indicating the selected operation mode is input to the microcomputer 9.

The operation modes are the display mode in which the device is rotated in the space as described above to display by the LED array 2, and the image data to be displayed in the PT array 3.
There is a reading mode for reading by.

The processing procedure of the microcomputer 9 in the display mode is shown in the flowchart of FIG. This process is divided into an interrupt process executed in response to a rotation detection signal from the rotation sensor 8 and an interrupt process executed in response to a display clock generated as described later.

The microcomputer 9 performs the rotation measuring process of step 501 every time the output signal of the rotation sensor 8 is generated. In this process, it is discriminated whether the output signal of the rotation sensor 8 is the Z mark signal or the P mark signal, and the input period of the Z mark signal and the input period of the P mark signal are respectively measured. As described above, when the body case 1 is rotated by inserting the finger into the rotary ring 4, not only the P mark signal but also the Z mark signal is continuously generated at a cycle of a certain degree or less. This will be referred to as a stable rotation state. In the next step 502, it is determined from the measurement result of step 501 whether or not a predetermined stable rotation state is established.

When it is determined in step 502 that the rotation speed is stable, the flow branches from step 504 to step 505 or 506 depending on whether the latest input from the rotation sensor 8 is the Z mark signal or the P mark signal. If it is a P mark signal, the process proceeds to step 505, and based on the average period of the latest several pulses of the P mark signal measured in step 501, the variable frequency divider for display clock generation described next Set the parameter (dividing ratio) that determines the clock period to.

In this embodiment, assuming that the latest average period of the P mark signal is t1, a display clock having a period of t1 / 4 is generated inside the microcomputer 9. That is, one P mark signal is generated each time the rotation marker plate 6 rotates with respect to the rotation sensor 8 by 10 degrees, but four display clocks are generated for each P mark signal.

When it is recognized in step 504 that the signal is the Z mark signal, the display counter C1 is cleared in step 506, and the display flag F1 is displayed in step 507.
Set. On the other hand, if it is determined in step 503 that the stable rotation state is not set, the display flag F1 is reset.

On the other hand, every time the display clock generated as described above is generated, the processing from step 511 onward is performed. In the first step 511, the state of the display flag F1 is checked. If the flag F1 is not set, the process does not proceed to step 512 and thereafter.

The display flag F1 is set when the first Z mark signal is generated after it is determined that the state of the apparatus is the stable rotation state. In addition, P in the stable rotation state
The display clock is generated at a cycle of 1/4 of the average cycle of the latest several pulses of the mark signal.

When the display flag F1 is set, steps 512.fwdarw.513.fwdarw.514 are executed in response to the display clock, and display output control for one line is performed. That is, 16-bit display data for one line is read from the memory 10 by the addressing corresponding to the value of the display counter C1, and the 16-bit data is converted into 16 L data.
LE corresponding to the bit of "1" given in parallel to ED2
D2 is driven to light up. Then, the display counter C1 is incremented, and at the next step 515, it is confirmed whether or not the value of the counter C1 has reached the upper limit MAX, and until the value reaches MAX, the interrupt routine is directly exited, and MAX is reached.
If it reaches, the display flag F1 is reset in step 516 and the routine is exited.

As is clear from the above description, when the stable rotation state of the device continues, the image data of the memory 10 is sequentially read from the first line to the last line every one rotation, and the LED is read according to the data. The array 2 is driven to blink in time series. The display output speed at this time is determined by the cycle of the display clock, and the cycle is determined by the average cycle of the latest several pulses of the P mark signal. Therefore, within the range where it is recognized as a stable rotation state, even if the rotation speed of the device changes, the display output speed changes accordingly, so the position and size of the image displayed as if floating in space due to the afterimage effect. Is stable.

Display output is started at the timing when the Z mark signal is generated during one rotation. In order to start the display at an arbitrary position (rotational phase) within the rotation plane of the device, the Z mark signal may be generated at that rotation phase. Therefore, as shown in FIG. 1, a direction mark 12 is provided on the outer surface of the flange of the rotary ring 4. For example, when the device is rotated with the direction mark 12 of the rotary ring 4 into which the finger is inserted facing vertically upward, the display starts when the device reaches directly above.

Next, the operation of the reading mode will be described with reference to the flowchart of FIG. This is an operation mode in which an image drawn on paper is read by the LED array 2 and the PT array 3 on the same principle as a hand scanner for reading an original, and the image data is stored in the memory 10 as display data.

An arbitrary image is drawn on a suitable paper with a felt pen or the like in an appropriate size, the apparatus is placed on the paper, and the front surface having the LED array 2 and the PT array 3 is opposed to the paper. At this time, the flange 4a of the rotating ring 4 is protruding from the surface of the main body case 1, and the protrusion 1a provided at the tip of the main body case 1 causes the gap between the arrangement surface of the LED array 2 and the PT array 3 and the paper surface. The proper spacing is maintained. Then, the reflected light from the paper illuminated by LED2 is reflected by PD3.

The image reading for one line is performed as follows. The 16 LEDs 2 are driven in turn one by one in the arrangement order for a short time. When the first LED 2 is turned on, the output of the first PT 3 next to it is read. Second L
When the ED2 is turned on, the same output from the first PT3 as described above is read. Thus, the reading position is changed by changing the illumination position using the same PT3. Similarly, when the third and fourth LEDs 2 are lit, the second PT
Read the output of 3. The same process is performed thereafter, and 8 PD3s
The image for one line is decomposed into 16 dots and read by.

The reading / scanning operation on the paper surface is performed as follows. The direction mark 12 of the rotating ring 4
To the reading start line direction, fix the rotating ring 4 with a finger, and rotate the body case 1 around that,
It moves on the paper surface at a relatively slow speed within a predetermined range. At this time, the rotation start position is set considerably before the reading start line. The run-up section extends from this rotation start position to the reading start position.

The flowchart of FIG. 6 can be divided into an interrupt process responding to the output of the rotation sensor 8 and an interrupt process responding to a reading clock described later. Similar to the operation in the display mode, the rotation measurement process of step 601 is executed every time the output of the rotation sensor 8 is generated, and the periods of the Z mark signal and the P mark signal are measured. And in step 602,
According to the measurement result, it is determined whether or not the device is slowly rotating within a predetermined speed range (this state is referred to as a stable reading operation state). If it is not in the stable reading operation state, the reading flag F2 is reset in step 603, and the process returns to the waiting for interrupt.

If it is determined that the reading operation is stable during the approach section, step 60 is executed depending on whether the latest input from the rotation sensor 8 is the Z mark signal or the P mark signal.
4 to 605 or 606. If it is a P mark signal, the process proceeds to step 605, and the clock period is determined in the variable frequency divider for reading clock generation based on the average period of the latest several pulses of the P mark signal measured in step 601. The parameters are set so that the read clock is generated at 1/4 of the latest average period of the P mark signal as described above.

If the generation of the Z mark signal is recognized in step 604, it is assumed that the approach section has ended and the reading start position has been reached, the reading counter C2 is cleared (step 606), and the reading flag F2 is set ( Step 607).

After the read flag F2 is set, steps 612 → 613 each time a read clock is generated.
Is executed, 16-bit image data for one line is read in the manner described above, and is written in the memory 10 by the addressing corresponding to the value of the read counter C2. Then, the counter C2 is incremented so that the value of the counter C2 becomes M.
The data reading operation is repeated in synchronization with the clock until it becomes AX, and when C2 becomes MAX, the display flag F2
To reset. This means that the image data for one page is read from the paper and stored in the memory 10.

Next, another embodiment of the present invention will be described. The function of reading an arbitrary image and using it as display data in the above embodiment may be reduced. In that case, the memory 10
Is a cartridge-type non-volatile memory and can be freely attached / detached to / from the connector in the main body of the apparatus, the display image can be displayed by arbitrarily selecting the memory 10 storing various image data and mounting it in the apparatus. Can be changed. Further, a circuit system for externally writing arbitrary image data to the memory 10 inside the apparatus and a connector for external connection are attached to the apparatus, and the content of the memory 10 is changed using a predetermined writing apparatus. It may be configured to be possible.

Further, although the rotary ring 4 into which a finger is inserted is provided as the operation fulcrum member in the above-mentioned embodiment, the present invention is not limited to this. Another example of the operation fulcrum member is shown in FIG. The operation fulcrum member 13 is in the form of a rod protruding from the main body case 1 in the direction of the rotation axis thereof,
The shape is devised so that it can be easily grasped with fingers. When the main body of the apparatus is large and heavy, the rod-shaped operation fulcrum member 13 having the knob portion as shown in FIG. 7 is easier to rotate. Of course, the function of the rotary marker plate 6 in FIG. 2 can be provided integrally with the rotary ring 4. Further, when the present invention is implemented as a lower cost toy, the rotation detecting means may be configured to obtain a detection signal for each rotation.

[0048]

As described in detail above, in the manually rotatable display device according to the present invention, when the main body of the apparatus is hung with the operation fulcrum member fixed by the finger as a fulcrum, the finger is rotated a small amount. The device body easily rotates around the member. By this operation, the light emitting cell array can be repeatedly rotationally scanned in space with the light emitting cell array being oriented in a fixed direction. Since the main body of the apparatus is rotating with respect to the operation fulcrum member during this operation, the rotation position information and the rotation speed information are obtained from the rotation detecting means. The display control means operates in synchronization with the rotation detection signal, and time-series light emission control of the light emitting cell array is performed according to the image data stored in the storage means.
As a result, the image due to the afterimage effect is stably displayed in space in synchronization with the rotational position and speed of the light-emitting cell array that is rotationally scanned.

In particular, if the configuration of the second invention is adopted, the display image is stabilized even if the user is not accustomed to the rotation operation of the apparatus and the rotation speed of the apparatus greatly changes during one rotation.

In the manual rotary type display device of the third invention, arbitrary image data can be stored in the storage means as follows. For example, draw any image on paper with a felt-tip pen. The device main body is placed on the paper, and the front surface, in which the light emitting cell array and the photoelectric conversion cell array are arranged in parallel, faces the paper surface. Then, by fixing the operation fulcrum member with fingers and rotating the main body of the apparatus along the plane of the drawing with the finger as a center, the reading scanning is performed similarly to the rotational scanning at the time of display. Also at this time, a detection signal is obtained from the rotation detecting means. The first control means and the second control means operate in synchronization with the detection signal, and an image on the paper illuminated by the light emitting cell array is read by the photoelectric conversion cell array in a dot-decomposed form. The image data is stored in the storage means.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a manually rotatable display device according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a mounting portion of an operation fulcrum member in the same embodiment apparatus.

FIG. 3 is a front view of a rotation marker plate in the above-mentioned embodiment apparatus.

FIG. 4 is a circuit diagram showing an electrical configuration of the device of the above embodiment.

FIG. 5 is a flowchart showing a control procedure of a display mode in the apparatus of the above embodiment.

FIG. 6 is a flowchart showing a control procedure of a reading mode in the apparatus of the above embodiment.

FIG. 7 is a partial perspective view showing another embodiment of the operation fulcrum member.

[Explanation of symbols]

 1 Main Body Case 2 Light Emitting Cell Array 3 Photoelectric Conversion Cell Array 4 Rotating Ring (Operation Support Point Member) 5 Sliding Member 6 Rotation Marker Plate 8 Rotation Sensor 9 Microcomputer 10 Memory 13 Knob Type Operation Support Point Member

Claims (5)

[Claims] 1. An apparatus main body having a long and narrow substantially rod-like shape, on the surface of which a large number of light emitting cells are linearly arranged along the longitudinal direction, and an appropriate bearing mechanism at one end of the apparatus main body. And an operation fulcrum member that is rotatable around an axis of a direction orthogonal to the longitudinal direction of the device body, and a mark of a rotation marker that rotates integrally with the operation fulcrum member inside the device body. Then, rotation detection means for obtaining relative rotation position information and rotation speed information of the operation fulcrum member with respect to the apparatus main body, and image data to be displayed by rotational scanning of the light emitting cell array about the operation fulcrum member. Image data is sequentially read from the storage means in synchronization with the storage means for storing and the detection signal from the rotation detection means, and the image data is generated according to the image data. Manual rotation type display apparatus characterized by comprising a display control means for driving the cell array. 2. The operation fulcrum member comprises a ring member into which a fingertip fits and penetrates, and the ring member is rotatably fitted and attached to an inner periphery of a bearing hole formed in the apparatus body. The manual rotary display device according to claim 1, wherein the display device is a rotary display device. 3. The manual rotary display according to claim 1, wherein the operation fulcrum member integrally has a knob portion protruding from the apparatus main body in a direction of a rotation axis thereof and easily gripped by fingers. apparatus. 4. The manual rotation type display device according to claim 1, wherein the rotation marker in the rotation detection means is formed with a large number of marks for dividing one rotation into a large number. 5. A photoelectric conversion cell array which is arranged close to and parallel to the light emitting cell array and is optically arranged so as to receive reflected light from a document illuminated by the light from the light emitting cell, First control means for reading the linear image on the original along the light emitting cell array and the photoelectric conversion cell array by synchronizing the light emission control of the light emitting cell and the output reading control of the photoelectric conversion cell; When the photoelectric conversion cell array is rotationally scanned on the document around the operation fulcrum member, the first control means is repeatedly operated in synchronization with the detection signal from the rotation detection means, and the operation is performed. 2. A second control means for storing in the storage means image data sequentially obtained from the photoelectric conversion cell array. Manual rotation type display device according to claim 4.