JPH0876228A - Display device - Google Patents

Abstract

PURPOSE: To provide a display device capable of displaying efficiently plural kinds of information in a small space and reducing the number of parts. CONSTITUTION: The display device of camera capable of selecting either a timer mode of sequentially rotating pointer 11 in accordance with the clocking time of a timer means or an information display mode of rotating the rotary pointer 11 in accordance with information different from the clocking time is provided with a main indicating part 11a and an auxiliary indicating part 11b extended in opposite directions across the center of the rotation of the rotary pointer 11. An index 12 for indicating the number of photographic picture frame is provided around the rotational path of the rotary pointer 11 and indexes 13-16 corresponding to other information are provided at intervals of a pitch of 30 deg. taking the start position of the main indicating part 11a of the rotary pointer 11 in the timer made as a reference.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device such as a camera for displaying various kinds of photographing information with a rotating pointer.

[0002]

2. Description of the Related Art As a display device for displaying various kinds of photographing information such as the number of frames photographed by a camera, as shown in FIG. 7, a pointer S rotated by a driving source such as a stepping motor is rotated every 30 °. Scale Ia and typical numerical indicators Ib to I
In addition to providing the index I having e, the operation of the pointer S is rotated by 6 ° per second with the numerical index Ib as the start position, and the shooting frame number display mode in which it is rotated corresponding to the shooting frame number. There is one that can be switched between and.

[0003]

In the display device of FIG. 7,
In order to display the number of frames to be photographed, it is sufficient for the index I to be 36 frames (216 ° for one frame 6 °), and the index of the range A exceeding this is useless. Further, in order to display information other than the number of photographed frames, it is necessary to provide another display section B,
A separate drive mechanism is required, which causes a cost increase.

An object of the present invention is to provide a display device capable of efficiently displaying a plurality of types of information in a small space and reducing the number of parts.

[0005]

To explain the present invention in association with FIG. 1 showing an embodiment, the present invention is different from the timekeeping mode in which the rotary pointer 11 is rotated in correspondence with the timekeeping time of the timekeeping means. It is applied to a display device capable of selecting one of the information display modes for rotating the rotary pointer 11 in accordance with information. For the above-mentioned purpose, at least two types of information to be displayed in the information display mode are provided, and the rotation pointer 11 includes a main instruction portion 11a and an auxiliary instruction portion 11b which extend in 180 ° different directions with the rotation center interposed therebetween. Around the rotation path of the rotation pointer 11, a plurality of types of indicators 12 to 16 corresponding to a plurality of types of information provided as display targets in the information display mode are provided in the main instruction unit 11a during the timekeeping mode. It is achieved by arranging in the rotational direction of the rotary pointer 11 with the start position as a reference at an angular pitch that is an integral multiple of the rotation angle (6 °) of the rotary pointer corresponding to the time counting unit in the time counting mode. When the display device is applied to a camera, the information to be displayed in the information display mode includes, for example, at least two types including the number of film frames. The index 12 for displaying the number of frames to be photographed is 1 at a pitch of 6 ° per frame in the rotating direction of the rotary pointer 11 with reference to the start position of the main indicating portion 11a of the rotary pointer 11 in the timekeeping mode.
It is advisable to provide graduations 120 lined up by 80 ° or more. In addition, following the index 12 of the number of photographed frames, the index 1 corresponding to other information
It is preferable to provide 3 to 16 together with the division index 17 arranged in the rotation direction of the rotary pointer 11 at an angular pitch of an integral multiple of 6 °.

[0006]

When the information display mode is selected, the rotary pointer 11 is rotationally driven by the tip of the main indicator 11a so as to point to one of the indexes 12 to 16 in accordance with the information to be displayed. On the other hand, when the timekeeping mode is selected, the rotary pointer 11 is rotationally driven from a predetermined start position in accordance with the timekeeping time. At this time, since the indexes 12 to 16 corresponding to a plurality of types of information are arranged at an angular pitch that is an integral multiple of the rotation angle of the rotary pointer 11 corresponding to the time unit with reference to the rotation start position of the rotary pointer 11, The timekeeping time can be read by the relative position of the main indicator 11a of the rotary pointer 11 and the indexes 12-16. If it is difficult to accurately read the timekeeping time only with the main instruction unit 11a, the auxiliary instruction unit 1
The timed time can be specified by using the indicated position of 1b. When a scale 120 is arranged on the index 12 for indicating the number of frames photographed by the camera and arranged at a pitch of 6 ° per frame for 180 ° or more,
Main indicator 11a or auxiliary indicator 11b of the rotary pointer 11
Even if any one of them deviates from the index 12, the other is always in the position to indicate the scale 120 in 6 ° increments, and the timekeeping time can be accurately specified. When indexes 13 to 16 of other information are provided together with the delimiter index 17, the index 12 to the main instruction unit 1
Even if 1a and the auxiliary instruction section 11b are detached, it is easy to read the indicated position.

Incidentally, in the section of means and action for solving the above problems for explaining the constitution of the present invention, the drawings of the embodiments are used for making the present invention easy to understand. It is not limited to.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is a top view of a camera to which the display device of this embodiment is applied. In the figure, 1 is a camera body, 2
Is a taking lens barrel, and 3 is a release button. Reference numeral 4 denotes a mode selection dial for selecting the exposure control mode of the camera, which is rotatable around the release button 3. When the mode selection dial 4 is operated to set the index 4a to the index "OFF" on the camera body 1 side, various operations of the camera stop. When the index 4a is aligned with the index "P", the camera determines both the shutter speed and the aperture value, and when the index "A" is aligned, the camera determines the shutter speed corresponding to the aperture setting value. The exposure is controlled in the aperture priority mode, and when the index "T" is reached, the exposure is performed only while the release button 3 is fully pressed.

A command dial 5 generates a pulse signal according to the rotation direction and the rotation amount. 6 is an AF mode button, 7 is a correction mode button, and 8 is a self-timer button. The self-timer button 8 is used to set and activate the self-timer. When the pushing time is within a predetermined second, a single timer is set in which the exposure operation is performed only once, and the timer is activated by releasing the pushing operation. It
When the self-timer button 8 is continuously pressed for a predetermined time or more, a double timer is set in which the exposure operation is performed twice at regular intervals. The functions of the AF mode button 6 and the correction mode button 7 will be described later.

Reference numeral 9 is a pointer-type display for displaying various kinds of photographing information. As shown in detail in FIG.
Is a counter display unit 10 that mainly displays the number of film frames, and an exposure correction amount display unit 2 that displays the exposure correction amount.
0, a distance display unit 30 that displays distance information, and a diaphragm display unit 40 that displays diaphragm information.

The counter display unit 10 has a pointer 11 which is driven to rotate by a stepping motor (not shown), a frame number indicator 12 for displaying the number of frames to be photographed, and a film rewinding state indicating that the camera is in a film rewinding state. Index 13 and single timer index 14 indicating the self-shooting state by the single timer
And a double-timer index 15 indicating a self-shooting state by the double-timer, and a film-absence index 16 including a letter “E” indicating absence of the film. Hereinafter, the rewind index 13 to the film absence index 16 will be referred to as the mode index 13
It may be collectively referred to as "~ 16".

The pointer 11 is 1 with the center of rotation RC interposed therebetween.
It has a main instruction portion 11a and an auxiliary instruction portion 11b extending in different directions by 80 °. The main instruction portion 11a is formed in a triangular shape that becomes thinner as it goes away from the center of rotation, and the auxiliary instruction portion 11b.
Is formed with a constant width narrower than the base end side of the main indicating portion 11a. As a result, the pointer 11 has an arrow-shaped appearance that faces the pointing direction of the main pointing portion 11a. Therefore, the main instruction section 11a and the auxiliary instruction section 11b are clearly distinguished,
There is no risk of confusing the indicated position of the pointer 11 by 180 °.

The number-of-frames index 12 includes a scale 120 engraved in a clockwise direction around the rotation center of the pointer 11 at a pitch of 6 °, and a typical number of frames to be photographed (10th frame, 20th frame and 30th frame in the illustrated example). Numerical indexes 121, 122, 123 indicating the number of frames are provided. When the pointer 11 is arranged so as to be parallel to the optical axis direction of the photographic lens (not shown) and the tip of the main indicating portion 11a points to the front side of the camera (dotted line position in FIG. 3A), the main indicating portion 11a The scale 120 is positioned so that the leading end and the position of the scale 120 indicating the number of imaged frames "0" coincide with each other. 36 graduations are provided corresponding to the maximum number of photographic frames of the film mounted on the camera, which is 36. Since each frame is 6 °, the scale 120 as a whole is 216 °. Mode indicators 13 to 16 are scale 1
30 counterclockwise from the position where the number of shooting frames of 20 is "0"
They are arranged at a pitch.

The exposure correction amount display section 20 has a pointer 21 which is rotationally driven by a stepping motor (not shown), and an index 22 which is arranged along the rotation path of the pointer 21 and is provided with a numerical value indicating the exposure correction amount. . Correction mode button 7 (see FIG. 2)
If you rotate the command dial 5 while pressing, the exposure compensation amount will change from -2 to + depending on the direction and amount of rotation.
It changes between two steps, and the pointer 21 rotates to a position indicating the set exposure correction amount.

The distance display unit 30 has a pointer 31 which is rotationally driven by a stepping motor (not shown) and an index 32 which is arranged along the rotation path of the pointer 31, and one end of the index 32 is at infinity. , And a character index 321 composed of the character “AF” are attached.

The operation of the pointer 31 changes according to the focus mode selected by the AF mode button 6 (see FIG. 2).
When the command dial 5 is rotated while pressing the AF mode button 6, a manual focus mode in which the photographer can arbitrarily set the shooting distance (hereinafter referred to as MF mode).
Is selected, and the set value of the shooting distance changes according to the rotation direction and the rotation amount of the command dial 5. At this time, the pointer 31 rotates to a position indicating the set shooting distance. MF
When the AF mode button 6 is pressed again from the mode,
The auto focus mode (hereinafter referred to as AF mode) in which the taking lens is automatically driven to the in-focus position is selected according to the subject distance detected by the distance measuring device of the camera. Move on the index 321.

The aperture display section 40 is provided with a pointer 41 which is rotationally driven by a stepping motor (not shown), and an index 4 which is arranged along the rotation path of the pointer 41 and is provided with a numerical value indicating the aperture value.
2 and. A character index 420 made up of the character “P” is attached to one end of the index 42. Mode selection dial 4
When the aperture priority mode is selected and the command dial 5 is rotated, the set value of the aperture changes according to the rotation direction and the amount of rotation, and the pointer 41 rotates to the position indicating the set aperture value. When the program exposure mode is selected by the mode selection dial 4 (see FIG. 2), the pointer 41 moves to the character index 420.

FIG. 4 is a view showing the arrangement of the control system of the camera of this embodiment. In the figure, reference numeral 50 is a control device composed of a microcomputer and its peripheral parts. The control device 50 performs sequence control of the camera and various calculations, and also executes a control program described later to control driving of the counter display unit 10 of the display 9.

The control device 50 is connected to the mode selection dial 4, the command dial 5, the AF mode button 6, the correction mode button 7, the self-timer button 8 and the display 9 as described above, and a photographing lens (not shown). A focal length detecting device 51 for detecting the focal length and a lens driving device 5 for driving the photographing lens according to a command signal from the control device 50.
2. Distance measuring device 53 for detecting subject distance, control device 50
A flash device 54 for illuminating an object according to a command signal from the watch 5, and a clock 5 for outputting information on the date and time.
5, film feeding device 56 for winding and rewinding film, and photographing frame number counting device 5 for counting the number of photographed frames
7. A half-press switch 58 that is turned on by half-pressing the release button 3 (see FIG. 2) described above, a release switch 59 that is turned on by fully-pressing the release button 3, and a film by driving a camera diaphragm or shutter. Exposure device 6 for exposing
A memory 61 that stores 0 and the current shooting condition is connected.

Then, the control unit 50 displays the set values of the focus mode and the aperture set by the AF mode button 6 and the like, the detected value of the distance measuring unit 53 and the calculated value by the control unit 50 itself. The exposure correction amount display unit 20, the distance display unit 30, and the aperture display unit 40 of No. 9 are controlled as described above, and the mode selection dial 4 is set to the index “P”, “A”.
Alternatively, when operated to the “T” position, the counter display processing shown in FIG. 5 is performed to control the display on the counter display unit 10.

In the process shown in FIG. 5, in step S1, it is determined whether or not the film is rewound based on the presence / absence of a film rewind signal from the film feeding device 56. If it is not in the rewinding state, the process proceeds to step S2, and it is determined from the stored contents of the memory 61 whether or not the self-timer photographing is selected by the self-timer button 8. If not in the self-shooting state, the process proceeds to step S3, and it is determined whether the timer mode is selected by the mode selection dial 4. If the timer mode is not selected, the process proceeds to step S4, the pointer 11 of the counter display unit 10 is rotated to a position on the frame number index 12 corresponding to the current number of photographed frames, and the process is ended.

When it is determined in step S1 that the film is in the rewinding state, the process proceeds to step S11, and the pointer 11 is rotated to the rewinding index 13. In the next step S12, it is determined whether or not the rewinding is completed based on the presence / absence of the rewinding end signal from the film feeding device 56. If the rewinding is in the middle, the determination is repeated until the end. When it is determined that the rewinding is completed, the process proceeds to step S13, the pointer 11 is rotated to the film absence index 16, and the process is completed.

When it is determined in step S2 that the self-shooting state is set, the process proceeds to step S21, and it is determined whether or not the single timer is used for shooting. In the case of the single timer, the process proceeds to step S22, and the pointer 11 is rotated to the single timer index 14. When it is determined that the pointer is not the single timer, that is, the double timer, the process proceeds to step S23, and the pointer 11 is rotated to the double timer index 15. After rotating the pointer 11 to a predetermined position in steps S22 and S23, it is determined in step S24 whether or not self-shooting is completed (second timer shooting is completed in the double timer). The judgment is repeated before the self-shooting is completed. When it is determined that self-shooting has ended, the process proceeds to step S4, the current number of frames to be shot is displayed by the pointer 11, and the process ends.

When it is determined in step S3 that the time mode is selected (mode selection dial 4 is in the "T" position), the process proceeds to step S31, and it is determined whether the half-push switch 58 is on. When the half-push switch 58 is on, the process proceeds to step S32, and the pointer 11 is rotated to a position corresponding to the number of photographed frames 0 on the frame number index 12 as shown by the dotted line in FIG. When the half-push switch 58 is off, the process proceeds to step S4.

After the processing of step S32, step S3
At 3, it is determined whether the release switch 59 is on.
When it is off, the process returns to step S31, and when it is on, the process proceeds to step S34. In step S34, the pointer 11 is rotated clockwise by 6 ° per second based on the clock signal output from the clock 55. In a succeeding step S35, it is determined whether or not the release switch 59 is off, and when it is on, the determination is repeated until it is turned off. Release switch 59
When it is determined that the number is off, the process proceeds to step S4, the current number of frames is displayed, and the process ends.

As is apparent from the above, in the apparatus of the present embodiment, the number of frames indicator 12 provided on the rotation path of the single pointer 11 of the counter display unit 10 is kept to the minimum necessary, and the shooting frame is placed in the empty space. Since the mode indicators 13 to 16 for displaying information other than the number are arranged, it is possible to efficiently use the space on the rotation path of the single pointer 11 to display various types of information, and to reduce the number of parts. Significant reduction is possible. By the way, in the example of FIG. 7, the mode indexes 13 to 1
Since 6 needs to be placed on the rotation path of another pointer,
Higher costs are unavoidable due to an increase in pointers and pointer drive systems.

Further, in the embodiment, the scale 12 of the piece number indicator 12
0 is arranged at a pitch of 6 ° from the rotation start position of the pointer 11 in the time mode, corresponding to the time unit, and
Since the mode indexes 13 to 16 are also arranged at a 30 ° pitch, which is an integral multiple of the rotation angle (6 °) of the pointer 11 corresponding to the time unit, with reference to the position corresponding to the number of imaged frames 0 on the scale 120, the frames are arranged. Even if the scale 120 of the number index 12 has only 36 frames, the timekeeping time can be instantly grasped by the relative positions of the mode indexes 13 to 16 and the pointer 11.

FIG. 3 shows an example of the rotation position of the pointer 11 in the time mode. At the solid line position of FIG. 3 (a), 20 seconds have elapsed due to the number-of-pieces index 12, but at the position of FIG. About 40 seconds can be instantaneously grasped by the return index 13, and 47 to 48 seconds can be instantaneously grasped by the single timer index 14 and the double timer index 15 at the position of FIG. 3C.
Moreover, the main indicator 11a of the pointer 11 and the mode index 13-
When the elapsed time cannot be accurately specified by using only 16, the auxiliary instruction unit 11b can be used together. For example, in the case of FIG. 3B, it is difficult to determine whether 39 seconds or 40 seconds have passed with the main instruction section 11a alone, but since the auxiliary instruction section 11b indicates the position of the ninth frame of the scale 120, It turns out that 39 seconds have passed. In the example of FIG. 3C as well, since the auxiliary instructing portion 11b points to the position of the 17th frame of the scale 12, it can be seen that 47 seconds have elapsed at present. Further, as shown in FIG. 6, if the division indexes 17 are provided in the counterclockwise direction at a pitch of 30 ° from the position corresponding to the number of photographed frames “0” of the scale 120 in addition to the mode indexes 13 to 16, it is easier to read. Is.
In the case of FIG. 6A, the main instruction unit 11a can determine that 20 seconds have elapsed, and in the case of FIG. 6B, the auxiliary instruction unit 11b can determine that 47 seconds have elapsed.

In the present embodiment, the rewinding indexes 13 and the like are arranged at a pitch of 30 ° subsequent to the number-of-pieces index 12, but the present invention is not limited to this, and the pointer 11 corresponding to the timing unit.
An angular pitch different from 30 ° may be adopted as long as it is an integer multiple of the rotation angle. The combination of information displayed by the hands 11 is not limited to the number of frames and other information, and various combinations may be adopted. It should be noted that the pointer 11 may make one round in 60 minutes. The scale 120 does not necessarily have to be 36 frames, but may be provided at 180 ° or more. This is because if the angle is 180 ° or more, either the main instruction section 11a or the auxiliary instruction section 11b always indicates the scale 120.

In the correspondence between the above embodiment and the claims,
The pointer 11 constitutes a rotation pointer, the clock 55 constitutes a timing means, and the frame number indicator 12 and the mode indicators 13 to 16 constitute indicators corresponding to a plurality of types of information. The case where the time mode is selected by the mode selection dial 4 corresponds to the timekeeping mode of the display device, and the other states correspond to the information display mode. The present invention is also applicable to display devices other than cameras.

[0031]

As described above, according to the present invention, a plurality of types of indexes corresponding to a plurality of types of information are used as a reference, and the rotation angle of the rotary pointer corresponding to the time unit is set with reference to the start position of the rotary pointer in the timekeeping mode. Since it is arranged at an angular pitch that is an integral multiple of, the timekeeping time can be read instantly by the relative position of the rotary pointer and the index in the timekeeping mode, and multiple timetables can be read by the single rotary pointer in the information display mode. Information can be selectively displayed. Therefore, it is possible to efficiently display a plurality of types of information in a small space and to provide an inexpensive display device that can reduce the number of parts. Moreover, since the main indicator and the auxiliary indicator are provided on the pointer, the indicated position of the main indicator can be accurately specified by using the auxiliary indicator.

[Brief description of drawings]

FIG. 1 is a plan view of a rotary pointer type display device according to an embodiment of the present invention.

FIG. 2 is a top view of a camera incorporating the display device according to the embodiment of the invention.

FIG. 3 is a diagram showing an operation of a counter display unit 10 of FIG. 1 in a time mode.

4 is a block diagram showing a circuit configuration of a control system of the camera shown in FIG.

5 is a counter display unit 10 by the control device 50 of FIG.
6 is a flowchart showing the procedure of the display process of FIG.

FIG. 6 is a diagram showing a modification of FIG.

FIG. 7 is a diagram showing an example of a rotary pointer type display device capable of selectively displaying the number of imaged frames and the time count.

[Explanation of symbols]

 9 indicator 10 counter 11 pointer 11a main indicator 11b auxiliary indicator 12 frame number indicator 13 rewind indicator 14 single timer indicator 15 double timer indicator 16 film absence indicator 17 break indicator 20 exposure correction amount indicator 30 distance indicator 40 aperture Display unit 50 Control device 55 Clock

Claims (3)

[Claims] 1. A display capable of selecting either a time counting mode in which a rotating pointer is rotated according to the time measured by a time measuring means or an information display mode in which the rotating pointer is rotated according to information different from the time measured. In the device, at least two types of information to be displayed in the information display mode are provided, and the rotation pointer is provided with a main instruction portion and an auxiliary instruction portion that extend in 180 ° different directions with the rotation center interposed therebetween. , Around the rotation path of the rotation pointer, a plurality of types of indicators corresponding to a plurality of types of information provided as a display target in the information display mode, the start position of the main indicator in the timekeeping mode, As a reference, a table is arranged in the rotation direction of the rotary pointer at an angular pitch that is an integer multiple of the rotation angle of the rotary pointer corresponding to the timekeeping unit in the timekeeping mode. Indicating device. 2. The display device is applied to a camera, and the information to be displayed in the information display mode is
At least two types including the number of shooting frames of the film are provided, and the index for displaying the number of shooting frames is the rotation direction of the rotary pointer based on the start position of the main instruction portion of the rotary pointer in the timekeeping mode. 2. The display device according to claim 1, further comprising graduations arranged at 180 [deg.] Or more at a pitch of 6 [deg.] Per frame. 3. The display device is applied to a camera, and the information to be displayed in the information display mode is
At least two types including the number of filmed frames are provided, and the index for displaying the number of filmed frames is 6 per frame in the rotating direction of the rotary pointer with reference to the start position of the rotary pointer in the timekeeping mode. An index corresponding to other information is provided along with the index of the number of shooting frames, along with a delimiter index that is aligned at an angular pitch of an integral multiple of 6 ° in the rotation direction of the rotary pointer. The display device according to claim 1, wherein the display device is provided.