JPH03200230A - Information setting device for camera - Google Patents

Abstract

PURPOSE:To confirm all the information in a selected mode at a glance by attachably and detachably fixing a display board for displaying the information on 1st or 2nd photographing mode on its respective surfaces on the upper part of a rotary dial which is provided rotatably to a camera main body and sets photographing information in every set position. CONSTITUTION:A recessed part 21 is provided on the upper surface side of the dial main body 20 and the display board 30 is engaged and fitted there with almost no gap. By screwing the screw part of a fitting screw 40 in the screw part 25 of the through hole 24 of the rotary shaft 23 of the dial main body 20, the display board 30 is fixed to the dial main body 20 without slipping through. The display in the case of shutter time priority being a 1st exposure mode is provided on one surface 32 of the display board 30 in a circumferential direction and the display in the case of stop priority being a 2nd exposure mode is provided on the 2nd display surface 33 in the circumferential direction. Thus, the information in the selected mode is all displayed on the display board mounted on the rotary dial and a photographer can confirm all the information at a glance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera information setting device for inputting and setting photographing information such as shutter speed and aperture value.

[Prior art] Conventionally, as an information setting device for a camera, there is a device disclosed in Japanese Patent Application Laid-Open No.
There are some proposals such as No. 9621.

This is an automatic exposure camera that allows you to select both shutter speed (TV) and aperture (AV) priority modes, allowing you to set TV information and AV information using the same input method, such as a rotary dial. , a configuration in which switching display can be performed by covering up either the TV information or the Av information displayed on the outer periphery and the inner periphery of the display disk, respectively, in conjunction with the switching operation of the priority mode switching means. It has become.

Information on the selected mode can be confirmed through a fan-shaped window formed in the member covering the display disk.

[Problems to be Solved by the Invention] However, the above-described conventional example has the following drawbacks.

(1) The displayed results are viewed through a fan-shaped window, and the TV and AV information can only be seen on both sides, making it impossible to see the entire display with the naked eye. I don't know.

(2) Because the display is switched on a flat surface, the display space on the inner circumference of the display disk is narrower than on the outer circumference, making the display difficult to see, or to avoid this, the display can be displayed on the inside. Limited by mode.

(3) The structure is complicated because the display switching mechanism is linked to the switching operation of the mode switching means.

SUMMARY OF THE INVENTION An object of the present invention is to provide a camera information setting device that has a simple configuration and allows you to check all information for a selected mode at a glance.

[Means for Solving the Problems] The gist of the present invention is to provide a rotary device that is rotatably provided to the camera body and that sets shooting information that is held non-rotatably for each setting position. A dial and information regarding the first shooting mode are displayed on one side, and information regarding the second aircraft mode is displayed on the opposite side to the one side, and either side is displayed on the top of the rotary dial. There is provided an information setting device for a camera, comprising a display plate that is detachably attached even when facing upward, and a fixing means for fixing the display plate to the rotary dial.

[Function] The information setting device of the camera configured as described above displays information regarding the first shooting mode and information regarding the second shooting mode on both sides of the display board, so that the information setting device for the camera configured as described above displays information regarding the first shooting mode and information regarding the second shooting mode, so that it is possible to select the shooting mode to be selected. By attaching the camera to the rotary dial with the display facing upward, you can check all the shooting information for the selected mode at a glance.

[Embodiment] Figs. 1 to 7 show an embodiment of a camera information setting device according to the present invention.

In FIG. 1 and FIG. 2, 20 is a dial body formed in a circular shape, and a hollow rotating shaft 23 formed on the back side rotatably fits into and penetrates the fitting hole 11 of the exterior cover IO. As shown in FIG. 5, it is arranged at the top of the camera body C. In addition, a recessed portion 21 is formed in the upper surface of the dial body 20, so that a display plate 30 (to be described later) can be fitted thereto almost without any gaps. By screwing into the screw portion 25 of the through hole 24 of the rotating shaft 23, the display plate 30 is fixed to the dial body 20 without coming off.

50 is a click plate provided around the fitting hole 11 on the back side of the exterior cover 10; 60 is a click spring provided with a click spring portion 61 on one side and an engaging portion 62 on the other side; , is fixed to the shaft end 26 of the rotating shaft 23 of the dial body 20, and by rotating the dial body 20, the convex portion 61a attached to the tip of the click spring portion 61 is biased, and the circumference of the click plate 50 is biased. It fits into a click groove 51 formed in the dial body 2, giving a click feeling.
Missing 0 is prevented. Note that the engaging portion 62 formed on the other side of the click spring 60 is a photographing information input portion that generates an electrical signal for inputting the rotation of the dial body 20, that is, the photographing information setting to the microcomputer of the camera body. (70, 80), which will be described later.

Reference numeral 30 denotes a display plate formed in the shape of a disc whose thickness gradually decreases from the center to the circumferential direction, and as shown in FIGS. )32
is provided with a display in the circumferential direction for the first exposure mode, shutter time priority, and a second display surface 33, which is the opposite surface to the first display surface 32, is provided with a display indicating the second exposure mode. An aperture priority display is provided in the circumferential direction.

Further, when the display plate 30 is fitted into the recess 21 of the dial body 20, the upper surface portion 27 of the dial body 20 is formed on a curved surface that is continuous with the curved surface of the surface thereof, and the dial body 20 and the display plate 30 so as to have an apparently integrated spherical shape.

The display board 30 also has a donut shape with an empty space in the center, and a flange portion 30a that comes into contact with the head of a screw 40 for mounting the display board is formed around the empty space. The first screw receiving surface 36 on the first display surface 32 side of the flange portion 30a and the second screw receiving surface 37 on the second display surface 33 side are located at the first peaks on the respective display surface sides. Surface portion 34
, are formed on counterbore surfaces having different depths from the second top surface 35. In this embodiment, in the state shown in FIG. 1 in which the display plate 30 is fitted to the dial main body 20 with the first display surface 32 facing upward, the first display surface 32 is placed on the top surface, and the first display surface 32 is in contact with the flat bottom 21a of the recess 21 of the dial main body 20. 2 top surface 35 and the first screw receiving surface 3
In the state shown in FIG. 4 in which the display plate 30 is fitted to the dial body 20 with the distance from If the distance between the first top surface 34 and the second screw receiving surface 37 that abuts is 12.2, then β, 〉β2
I'm trying to make it happen.

Therefore, in order to select the first exposure mode, the first
Place the display plate 30 on the dial body 2 with the display surface 32 facing up.
0, and for installation, select the tip position of the tip 41 of the screw 40 (hereinafter referred to as the first pushing position) and the second exposure mode when screwing the screw 40 to the predetermined tightened position. In order to do this, the display plate 30 is attached to the dial body 20 with the second display surface 33 facing upward, and the mounting is done using screws 4.
0 to a predetermined tightened position, the mounting position is the tip position of the tip part 41 of the screw 40 (hereinafter referred to as the second pushed position). 23, the first push-in position is located above the second push-in position, and this difference in position is used to switch between the first exposure mode and the second exposure mode. An electrical switching signal is obtained. Note that this signal switching mechanism will be described later.

Furthermore, if the display plate 30 rotates relative to the dial body 20 while the display plate 30 is attached to the dial body 20, proper settings cannot be made, so in this embodiment, a notch 31 is formed in the display plate 30. At the same time, the display board 30
A positioning protrusion 22 into which the notch 31 fits is formed on the inner circumference of the recess 21 into which the notch 31 fits.

That is, when selecting the first exposure mode with shutter priority as shown in FIG. 5(a) and when selecting the second exposure mode with aperture priority as shown in FIG. 5(b), each All information such as setting values in the mode will not be obscured (displayed), so by rotating the dial body 20 provided at the top of the camera body C,
By matching the value displayed as 0 with the index A provided on the camera body C, the photographing conditions are set at that value. First and second display surfaces 32 of the display board 30.
33 is provided with a common information display, and the notch 3
A self-timer display 38a indicating a self-timer mode and a battery check display 38b indicating a camera battery check are provided in order from position 1 in the counterclockwise direction, and a program shooting display is provided in an adjacent position clockwise from the notch 31. A program mode display 38c is provided to display, and the notch 31 is set to a lock position, and for this purpose, a lock position display 22a is provided on the positioning convex portion 22 of the dial body 20 into which this notch 31 fits. .

In addition to the above-mentioned common displays, the first display surface 32 also displays B,
4 (1/4) 8 (1/8) ' 15 (1/
15), 30 (1/30), 60 (1/60), 1
25 (1/125) 250 (1/250), 5
00 (11500) 1000 (1/1000), 2
There are a total of 15 displays including the display of 000 (1/2000), and the click grooves 51 of the click plate 50 are arranged in such a way that the clicks are activated at the positions where these display parts correspond to the above-mentioned index A. It is formed.

In addition, on the second display surface 33, the above-mentioned common display is displayed at the same position as the first surface, and instead of the shutter speed display position, the aperture value (1, 0, 1
,4,2,0,2,8,4,0,5,6,8,0,11
, 0, 16, 0122, 0, 32, 0) are displayed, and a click is applied at a position where each display position matches the index A.

On the other hand, when operating the battery check on the dial body 20, when the self-timer display 38a is aligned with the index A, the battery check display 38b is rotated clockwise to the index A position and the finger is removed from the dial body 20.
The dial main body 20 is returned to the position of the self-timer display 38a by an automatic return spring mechanism shown in FIG. 12, and the battery check is canceled.

When setting the battery check position, a buzzer is used to issue a battery check warning, as will be described later.

Figures 12(a) and 12(b) show the automatic return spring mechanism.

Reference numeral 500 denotes an automatic return spring, which is formed by deforming a plate spring into a circular shape. One end 511 fixed to the camera body C is a fixed end, and the other end is a movable end 512 which is L-shaped. The 12th
It is held as shown in Figure (a).

On the other hand, a dial stopper 51 is provided on the dial body 20.
4 is provided, and when the dial body 20 is rotated clockwise and passes the self-timer position, the dial stopper 514 engages with the movable end 512 of the automatic return spring 500, and when the dial body 20 is rotated further, the automatic return spring 514 begins to deform and returns. Power is accumulated. Then, when the dial main body 20 is rotated to the battery check position and the finger is removed from the dial main body at that position, the dial main body 20 is rotated counterclockwise by the return force of the automatic return spring 514, and the battery check is released and the self- It will return to the timer position.

In this embodiment, when switching the exposure mode, it is necessary to remove the screw 40 for installation, and for reinstallation, when screwing the screw 40 into the dial body 20, the screw 40 must be removed.
In order to prevent excessive tightening of the zero, a spring is used to automatically return the battery check display to the self-timer display position.

That is, for installation, the screw 40 is tightened with a right-hand screw with a clockwise direction. The dial body 20 is rotated clockwise by force (.

The spring force of the above-mentioned automatic return spring is made to have a strong urging force to some extent (thereby, during installation, the screw 40 is tightened against the urging force of the automatic return spring, so
When the battery check position is reached, it is sufficiently tightened and a battery check can be performed at the same time.

Further, in this embodiment, when the display plate 30 is attached to the recess 21 of the dial body 20, the bottom 21a of the recess 21 is
By making the display panel 30 a flat surface and a spherical shape, a space 21b is provided between the outer peripheral side of the bottom portion 21a and the lower display surface of the display panel 30. As shown, after removing the screw 40, the positioning protrusion 22 is installed.
When the display board 30 is pushed downward with a finger on the opposite side, as shown in FIG. The display board 30 can be easily taken out by lifting up and pinching it, and even if the display board 30 is attached to the recessed part 21 of the dial body 20 to the extent that it appears to be integrated with the dial body 20, the exposure mode can be changed. This makes it easier to reverse the display board.

Note that the display board 30 has a planar shape, and the bottom 21 of the recess 21
Even if a is made into a convex spherical shape, the display board 30 can be easily taken out in the same way.

Next, a signal switching mechanism for obtaining an electrical switching signal between the first exposure mode and the second exposure mode, and a dial main body 2 are provided.
The photographing information input unit that generates an electrical photographing information signal in response to the rotation of the camera will be described with reference to FIGS. 1 and 2.

Reference numeral 90 denotes a dial base plate fixed to the camera body C. In the above-mentioned installation, a hollow shaft 100 is fixed through the screw 40 coaxially, and a phase detection board 80 is mounted on the top surface concentrically with the axis of the hollow shaft 100. Fixed. On the surface of this phase detection plate 80 is a pattern section 8 that generates an electrical photographing information signal that is connected to the control microcomputer of the camera body.
1 is provided. Reference numeral 70 denotes a section seat that is rotatably attached to the hollow shaft 100 facing the pattern section 81. A brush 72, which is a conductive section that contacts the pattern section 81, is fixed to the lower surface of the section seat. It is urged toward the phase detection board 80 by a thrust member 73 having spring properties. Further, an engagement pin 71 is protruded from the upper surface side of the section seat 70, and engages with an engagement portion 62 formed at the other end of the click spring 60, and is integrated with the rotation of the dial body 20. The sectioning seat 70 is rotated.

On the other hand, a GND piece 101 is fixed to the lower end of the hollow shaft 100 on the back side of the dial base plate 90, and the ground piece 101 can be contacted with the GND piece 101 on the back side of the dial base plate 90, and the tip end is attached to the hollow shaft 100. A changeover switch movable piece 120 having spring properties extending to the hole position is provided, and the changeover switch movable piece 120 and the GND section 101 are used to obtain a switching signal between the first exposure mode and the second exposure mode. It constitutes a normally closed mode selector switch. The mode changeover switch is turned on and off by a changeover pin 110 that is inserted through the hollow shaft portion of the hollow shaft 100 from below so as to be movable in the axial direction. The lower end head 110a of the switching bottle 110 is always in contact with the tip of the switching switch movable piece 120, and the switch movable piece 120 is connected to the GND section 1 by the spring force.
It can be pushed up to a position where it makes contact with 01. At that time, the tip of the switching bin 110 is connected to the dial body 2.
0 (hereinafter referred to as the push-up position), and when the switching bin 110 is pushed down against the spring force of the switch movable piece 120, the mode switching switch is activated. Turn off.

In this embodiment, the operation of the switching bin 110 is carried out using screws 40 to fix the display board 30, and as described above, the first display surface 32 of the display board 30 is turned upward. In the exposure mode, as shown in FIG. In the case of the second exposure mode in which the display surface 33 faces upward, as shown in FIG.
For installation, the second push-in position, where the lower end of the screw 40 is located, is changed to a position below the push-up position of the bottle 110.

Therefore, in the case of the first exposure mode, the installation is done with screws 4
Since the switching bin 110 is not pushed down by 0, the mode switching switch is in the closed state and the first
In the case of the second exposure mode, the switching bin 110 is pushed down by the screw 40, the mode selection switch is opened, and the second exposure mode is inputted to the microcomputer. An OFF signal indicating the exposure mode is input to the microcomputer.

When setting the first exposure mode, which is shutter priority,
During installation, the changeover bin 110 is not pushed down by the screw 40 and the mode changeover switch is in the closed state, so even if the screw 40 is not screwed in, the mode changeover switch is in the closed state. Outputs an on signal indicating the exposure mode. For this reason, in this embodiment, the same display as that displayed on the first display surface 32 of the display board 30 showing the information of the first exposure mode is displayed on the bottom surface of the recessed part 21 of the dial body 20 as shown in FIG. It is set up as shown.

That is, when the first exposure mode, which prioritizes the shutter speed, is often used, there is no need to attach the display plate 30 to the dial body 20, and the setting value displayed on the bottom of the recess 21 of the dial body 20 is displayed. You can set the shutter speed by looking at the .

Note that in this example, the information settings are shutter speed and aperture value, and the case where these modes are selected is used as an example. The mode may be, for example, a program setting mode having a program diagram for the subject to be photographed.

FIG. 8 shows that the signal of the information setting device according to the present invention is input,
FIG. 2 is a diagram showing an example of a camera control circuit that drives and controls various devices.

In Fig. 8, 201 is a microcombiner, 202
203 is a pull-up resistor, and 203 is a mode changeover switch. The switch 203 is an open/close switch that is turned on when the dial is set to the shutter priority side and turned off when the dial is set to the aperture priority side.

The signal from the switch 203 is connected to the input P1 of the microcomputer 201, and when the switch 203 is on, a low signal is input to the microcomputer 201, and when it is off, a high signal is input to the microcomputer 201.
By reading this input port P1, 01 can determine whether the dial is set to give priority to the shutter or to the aperture.

80 is a phase detection board that detects rotation by a contact piece 72 that rotates in conjunction with the rotation of the dial of the camera, and a 4-bit position signal corresponding to the position of the dial is sent to the input port P3. P4. P5. It is input to P6.

208, 209.210.211 are pull-up resistors for detection, respectively, and P3. P4. P5. A low signal is input to each input port of P6 when the connected brush is touching a conductive part of the phase detection board, and a high signal is input when it is touching a non-conductive part. FIG. 11 shows P3 when priority values are selected for shutter priority and aperture priority. P4. P5. It shows the input state of signals to each input port of P6, where "0" in the figure means a low level input signal, and "1" means a high level input signal.

In FIG. 11, P3. P4. P5. If all input ports of P6 become low signal inputs and output 17",
In both shutter priority mode and aperture priority mode, the voltage of a power supply (not shown) is checked and a warning sound corresponding to the voltage is emitted. 246 is a sounding body for emitting the warning sound, and is connected to the output port P18 of the microcomputer 201. , driven by the microcomputer 201.

In FIG. 11, input boat P3. P4゜P5. When the input state of P6 is ro, O, O, IJ,
The self-timer operation mode is used for both shutter priority and aperture priority.

Similarly, in FIG. 11, input ports P3, P4. P5.
The input state of P6 is ro, O, l.

0'', the release operation is prohibited in both shutter priority mode and aperture priority mode, and the release operation is not performed even if the release button is pressed.

Also, input boat P3. P4. P5. The input state of P6 is r
o, 0, 1. When set to IJ, neither shutter priority nor aperture priority is performed, and the shutter speed and aperture value change simultaneously due to changes in brightness to maintain proper exposure. obtain. Switches to program automatic exposure mode. An example of the relationship between the shutter speed and the aperture value in the automatic exposure mode at this time is shown in FIG. 1O.

In other cases, priority setting values are determined according to FIG. 11 for both shutter priority and aperture priority.

For example, when shutter priority is being used, input port P3. P4. P5. The input state of P6 is rO, 1, O, O
J, 1/2000 seconds is set as the priority time. Similarly, when using aperture priority,
Input boat P3. P4. P5. The input state of P6 is "l.

0, l', IJ', F2, 8 will be set as the priority aperture value.

A switch 212 is linked to the release button, and is turned on by pressing the release button of the camera. The switch 212 provides input to the input port P7 of the microcomputer 201, so that the microcomputer 201 can read the state of the release button.

239 is a silicon photodiode for photometry; 240 is an AD converter that performs AD conversion on the photometry value output from the silicon photodiode 239; the photometry information is transmitted to the microcomputer 201 via a path line 241;

242 and 243 are resistors for dividing the voltage of the power supply battery; 244 is an AD converter for AD converting the divided voltage; and voltage information is transmitted to the microcomputer 201 via a pass line 245.

214 is a motor (M 1 ) for driving the opening and closing of the aperture 223 of the photographing lens.

215, 216 is PNP) transistor, 217, 21
8 is an NPN transistor.

The collectors of the PNP transistors 215, 216 are each connected to the ends of the motor M1, and the collectors of the NPN transistors 217, 218 are also respectively connected to the ends of the motor M1. Also, a PNP transistor 215.
Both emitters of transistors 216 and 216 are connected to the + side of a power supply (not shown), and emitters of NPN transistors 217 and 218 are both connected to one side of a power supply (not shown).

The bases of the PNP transistors 215 and 216 are connected to the microcomputer 2 through resistors 219 and 220, respectively.
01 output boat P8. Connected to P9.

The bases of the NPN transistors 217 and 218 are connected to the output ports PLO and pH of the microcomputer 1 via resistors 221 and 222, respectively.

With the above configuration, the forward and reverse rotation of the motor M1 can be arbitrarily controlled by the microcomputer 201.

224 rotates normally to feed photographic film (not shown);
This is a motor (M2) for raising and lowering the main mirror and charging the shutter spring in reverse rotation.

225, 226 are PNP) transistors, 227.22
8 is an NPN transistor.

The collectors of the PNP transistors 225 and 226 are connected to both ends of the motor M2, and the collectors of the NPN h range transistors 22 and 228 are also connected to both ends of the motor M2. Also PNP transistor 225
．． The emitters of transistors 226 and 226 are both connected to the + side of a power supply (not shown), and the emitters of NPN transistors 227 and 228 are both connected to one side of a power supply (not shown).

The bases of the PNP transistors 225 and 226 are connected to the output ports P12. of the microcomputer 201 via base resistors 229 and 230, respectively. Connected to F13.

The bases of the NPN transistors 227 and 228 are connected to the output ports P14. of the microcomputer 201 via resistors 231.232, respectively. Connected to F15.

With this configuration, the forward and reverse rotation of the motor M2 can be arbitrarily controlled by the microcomputer 201.

Reference numeral 233 denotes a magnet for unlocking the movement of the front shutter curtain (not shown), and 234 denotes a magnet for releasing the lock of the movement of the rear shutter curtain (not shown).

Magnet 233 is connected to the collector of NPN transistor 235 and magnet 234 is connected to the collector of NPN transistor 236.

The bases of the NPN transistors 235 and 236 are connected to the output ports P16. of the microcomputer 201 via base resistors 237 and 238, respectively. Connected to PI3.

With this configuration, the microcomputer 201 can arbitrarily control the front and rear curtains of the shutter.

Next, the operation of the electric circuit configured as described above will be explained according to the operation flowchart of the microcomputer 201 shown in FIG.

When the battery is inserted into the camera, the microcomputer 2
01 starts operation from step 1.

[Step 2] Input boat P3. P4. Read the input signals of P5 and P6 and set the release operation disabled state, i.e. r
o, 0, 1. Determine whether or not the state is OJ. If the release is prohibited, the process does not proceed to the following steps and returns to step 1. If the release is not prohibited, the process moves to step 2.

[Step 2] Input boat P3. P4. The input signals of P5 and P6 are similarly read to determine whether or not to check the power supply voltage, that is, whether or not the state is "0°, 0.0.OJ."

If you want to check the power supply voltage, go to step 19.
If not, proceed to step 3.

[Step 19] Communicates with the AD converter 244 via the pass line 245, checks the power supply voltage, and drives the output port P18 based on the result. When the power supply voltage is sufficient, the sounding body will sound at a fast frequency such as 8Hz,
When the voltage is low, the sounding body sounds at a slow frequency such as 2Hz.

[Step 3] Switch 21 linked to the release button
2 is read from boat P7.

If the input signal to the boat P7 is at a low level, the release button is pressed in, so the process moves to step 4 to start the release operation. If the input signal of the boat P7 is at a high level, the process returns to step 1, and the processes from step 1 to step 3 are repeated until the release button is pressed.

[Step 4] AD converter 2 via pass line 241
40 and inputs photometric information.

[Step 5] The state of the switch 3, which determines whether the dial is set to the shutter priority side or the aperture priority side, is read from the boat P1. If the input signal of boat P1 is low level, the dial is on the shutter priority side, so step 6 is performed to perform shutter priority calculation processing.
If the input signal of boat P1 is at a high level, the dial is set to the aperture priority side, so the process branches to step 8.

[Step 6] Input boat P3. P4. The shutter priority value is determined from the input signals of P5 and P6 according to FIG.

[Step 7] Based on the input photometric information and shutter priority value, an aperture value for proper exposure is calculated. However, in the program automatic exposure mode, the shutter speed and aperture value are determined according to the program diagram shown in FIG. After that, the process branches to step 10.

[Step 8] Even when the dial is set to the aperture priority side, input boat P3. P4. The aperture priority value is determined from the input signals of P5 and P6 according to FIG.

[Step 9] Based on the input photometric information and aperture priority value, the shutter speed required for proper exposure is calculated. However, similarly to the shutter priority mode, in the program automatic exposure mode, the shutter speed and aperture value are determined according to the program diagram shown in FIG. Then step l
Branch to O.

[Step 10] If the self-timer operation mode is selected, wait for 10 seconds to elapse. If it is not the self-timer operating mode, the process immediately moves to step 11.

[Step 11] Output a low level signal from the output port P12 to turn on the PNP transistor 225.

Further, a high level signal is output from the output port P13 to turn off the PNP transistor 226. Also, a low level signal is output from the output port P14 to turn off the NPN transistor 227.

In addition, a high level signal is output from the output boat P15,
Turn on NPN transistor 228. As a result, current flows through the motor M2 from left to right, causing the motor M2 to rotate in reverse. This flips up the camera's main mirror, making it ready for shooting.

[Step 12] Output a high level signal from the output port P8 to turn off the PNP transistor 215. In addition, a low level signal is output from output port P9, and PN
Turn on P transistor 216. Also output boat PL
A high-level signal is output from O to turn on the NPN transistor 217.

In addition, a low level signal is output from the output boat pH, and N
PN transistor 2Hl is turned off.

As a result, current flows through the motor M1 from right to left, and the motor M1 rotates in the normal direction. As a result, the aperture of the camera is driven in the direction of narrowing down the aperture. When the position has been narrowed down to a predetermined position, the output boat P8. P9. PIO and pH are all set to high level to stop motor M1.

[Step 13] A high level signal is output from the output port P16 for 10 milliseconds. As a result, the running of the shutter tip film is unlocked and the shutter tip film starts running.

[Step 14] Wait for the shutter opening time to end. This time is the priority set value in the case of shutter priority, and is the shutter time obtained as a calculation result for obtaining appropriate exposure for the set aperture value in the case of aperture priority. However, in the case of bulb photography with shutter priority, the process remains in step 14 until the release button on the camera side is released.
After the release button is released, the process moves to step 15.

As described above, the operation of the release button can be determined from the input signal of the input boat P1.

[Step 15] A high level signal is output from the output port P17 for 10 milliseconds. As a result, the running of the shutter rear curtain is unlocked and the shutter rear curtain starts running.

[Step 16] Output a low level signal from the output port P12 to turn on the PNP transistor 225.

In addition, a high level signal is output from the output boat P13,
Turn off PNP transistor 226. Also, a low level signal is output from the output port P14 to turn off the NPN transistor 227.

In addition, a high level signal is output from the output boat P15,
Turn on NPN transistor 228.

As a result, current flows through the motor M2 from left to right, causing the motor M2 to rotate in reverse.

As a result, the main mirror of the camera goes from being raised up to being lowered while simultaneously charging the shutter springs of both the front and rear curtains.

[Step 17] A low level signal is output from the output port P8 to turn on the PNP transistor 215. In addition, a high level signal is output from output port P9, and PN
Turn off P transistor 216. Also output boat P1
It outputs a low level signal from 0 to turn off the NPN transistor 217.

In addition, a high level signal is output from the output boat pH, and N
PN transistor 218 is turned on.

As a result, current flows through the motor M1 from left to right, causing the motor M1 to rotate in reverse.

As a result, the aperture of the camera becomes open.

[Step 18] Output a high level signal from the output port P12 to turn off the PNP transistor 225.

In addition, a low level signal is output from the output boat P13,
Turn on PNP transistor 226. Also, a high level signal is output from the output port P14 to turn on the NPN transistor 227.

In addition, a low level signal is output from the output boat P15,
Turn off NPN t-transistor 228.

As a result, current flows through the motor M2 from right to left, causing the motor M2 to rotate in the normal direction. As a result, one frame of exposed photographic film is fed, and the series of release operations is completed. After this, the process returns to step 1 and the above-described operations are repeated.

[Effects of the Invention] As explained above, according to the present invention, all information in the selected mode is displayed on the display board attached to the rotary dial, and the photographer can check all the information at a glance. For display in other modes, all information can be checked at a glance by flipping the display panel.

Furthermore, information for one mode can be displayed on one side of the display board, similar to a single mode dial, so a sufficient display space can be secured and a neat design can be achieved.

Furthermore, by making part of the rotary dial automatically returnable, when fixing the display board to the dial with screws, the spring force for automatic return can be used as a guide for the screw tightening force, and the rotation Tighten the screw until the dial rotates (When the rotary dial rotates to the set position in the automatic return range, a buzzer etc. may sound to notify the operator of this, and if this set position is used as the battery check position) You can also check the voltage at the same time.

[Brief explanation of drawings]

1 to 7 show an embodiment of the camera information setting device according to the present invention, in which FIG. 1 is a sectional view showing the setting state of the first exposure mode, FIG. 2 is an exploded perspective view, and FIG. Diagram (a)
(b) and (c) are a plan view of one side of the display board, a plan view and a cross-sectional view of the other side, FIG. 4 is a cross-sectional view showing the setting state of the second exposure mode, and FIG. ＞ , (b) is an external top view showing the setting state of the first exposure mode and the second exposure mode, FIGS. 6 and 7 are diagrams for explaining the operation to take out the display board, and FIG. Camera control block diagram, No. 9
The figure is a block diagram explaining its operation, Figure 10 is an exposure control diagram, Figure 11 is a diagram showing the correspondence between input signals and setting values, and Figures 12 (a) and (b) show the automatic return mechanism. FIG. lO: Camera exterior cover 20: Dial body 40: Mounting screws 60: Click spring 80: Phase detection board 100: Hollow shaft 120: Switch movable piece. 30: Display plate 50: Click plate 70: Section pressure 90: Dial base plate 110: Switching bin No. 3 Fig. 201- (b) Fig. 10 Fig. 1 Figure 2 (b)

Claims (1)

[Claims] 1. A rotary dial for setting shooting information that is rotatably provided on the camera body and is held non-rotatably for each setting position, and information regarding the first shooting mode is displayed on one side. a display board that displays information regarding the second shooting mode on a surface opposite to the one surface, and is detachably attached to the top of the rotary dial with either surface facing upward;
An information setting device for a camera, comprising a fixing means for fixing the display plate to the rotary dial. 2. The camera information setting device according to claim 1, wherein the fixing means is a screw member that is screwed into the rotary dial to tighten and fix the display plate. 3. The camera according to claim 1 or 2, wherein the rotary dial has automatic return means for automatically returning from one setting position other than the shooting information to a setting position adjacent to the setting position by a spring force. information setting device. 4. The information setting device for a camera according to claim 3, wherein the tightening direction of the screw member is opposite to the automatic return direction of the rotary dial by the automatic return means. 5. The information setting device for a camera according to claim 3, wherein the spring force of the automatic return means is set in accordance with the tightening force for fixing the display plate by the screw member. 6. The camera information setting device according to claim 1, 2, 3, or 4, further comprising a notification means for notifying when the rotary dial is set to one setting position other than shooting information. .