JPH04357Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a camera equipped with an acoustic notification device capable of audibly notifying information such as camera shutter speed, self-timer operation, and battery check results.

<Prior art> In conventional cameras, various warnings and notifications such as camera shake shutter speed, self-timer activation, battery check results, etc. are made by generating sounds to better draw the photographer's attention. That is known. However, on the other hand, there are cases where it is not desirable to generate sound, and if the photographer does not need an acoustic warning or notification, there is a device configured to selectively stop the generation of the sound, for example. It was proposed in Utility Model Application No. 56-85820.

<Problems to be solved by the invention> However, in conventional cameras that use sound to issue various warnings and notifications as described above, there are cases where normal photography is performed while generating sound at the photographer's request. Although there is a function that allows you to selectively switch between normal shooting without generating sound, the switching operation member is provided separately from the operation member necessary for normal shooting. As a result, photographers often end up not using the above functions, and the configuration has not been designed to allow the above functions to be fully utilized.
In addition, since the switching operation member described above is provided on the exterior of the camera in addition to the operation member for normal shooting, the operation members become complicated and it is difficult for the photographer to understand and remember how to operate the switching operation member. There were some drawbacks.

The purpose of the present invention is to eliminate the above-mentioned disadvantages in a conventional camera that uses sounds to issue various warnings and notifications, and can selectively stop the sound when it is not needed. We have made further improvements to solve this problem, and we have made further improvements to improve the sound generation and
To provide a camera equipped with an acoustic alarm device whose non-occurrence switching function can be fully utilized and whose operation method is easy.

<Means for Solving the Problems> The present invention provides a first imaging circuit that operates the imaging circuit with the generation of sound under specific conditions during normal imaging.
and a second state in which the photographing circuit operates in the same manner as the first state except that no sound is generated during normal photographing, in which the photographing circuit operates in the first state. a first position in which the circuit is operable; and a second position in which the imaging circuit is operable in the second state.
By providing a single manual operation member that can be switched between the first position and a third position that disables the photographing circuit, the photographer can receive various warnings and notifications during normal photographing. The generation/non-occurrence switching function is fully utilized and the switching operation can be easily performed.

<Function> When the switching operation member is in the third position, the photographing circuit becomes inoperable and no photographing is performed. When the switching operation member is switched from the third position to the first position, the photographing circuit is activated with the generation of a warning/notification sound, and normal photographing becomes possible. On the other hand, when the switching operation member is switched from the third position to the second position, the photographing circuit operates in exactly the same way as when it is switched to the first position, except that the sound for warning and notification is not generated. Normal shooting is possible.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The acoustic notification device of one embodiment shown in FIGS. 1 to 3 is a camera-brake shutter speed (a speed at which the user is likely to cause camera shake when shooting, for example, a speed slower than 1/60 second) in automatic shutter speed control. The results of the timer operation and battery check can be announced by sound.

FIG. 1 shows the top surface of a single-lens reflex camera, in which an interchangeable lens 4 is attached to a body 2. On the upper surface of the body 2, a film sensitivity setting dial 8 and a rewind knob 10 are coaxially rotatably provided on the left side of the pentaprism cover section 6 in the figure, and a battery check button 12 is provided on the side thereof.
is located. Further, on the right side of the pentaprism cover part 6 in the figure, there is a film number display window 14,
Winding lever 16 and shutter release button 18
around the shutter release button 18 is a disc-shaped shutter speed setting dial 20.
is rotatably provided. The shutter speed setting dial 20 has the symbol "A" representing automatic shutter speed control, and the symbol "1, 2, 4..." representing manually set shutter speeds 1, 1/2, 1/4...1/1000 seconds, respectively. ...1000" symbol, a "B" symbol representing bulb setting, and a "P" symbol representing program automatic exposure control are marked. Turn the setting dial 20 so that one of these symbols matches the index 2a. By rotating it, you can set the desired shutter speed and exposure control mode. Note that the part 20a of the setting dial 20 marked with the "P" symbol is formed to protrude in the radial direction from the other outer circumferential parts, so that the "P" symbol is easy to visually understand, and It can also be recognized by the tactile sensation of the fingers. By this,
This makes it easy to check settings for program automatic exposure settings, which are often set.

The power switch operating member 22 is as shown in FIG.
It has an operation knob 22a and a display section 22b, and further has a contact brush 24 and a contact brush 26 (shown in FIG. 3) on the lower surface of the display section 22b, and is rotatably provided coaxially with the setting dial 20. There is. On the top surface of the display section 22b, "ON" indicating the first power supply position, a picture of a wavefront indicating a sound wave marked immediately next to it, a symbol "OFF" indicating the non-power supply position, and a symbol indicating the second power supply position are displayed. Only the symbol “ON” is marked. Power switch operation member 22
is configured such that any one of these symbols is clicked at a position where it can be observed from the display window 2b of the upper cover.

FIG. 3 shows the electrical circuitry within the camera.

Power from the power source E can be supplied to each circuit via the power switch 28. The power switch 28 includes a contact piece 28a and contact pieces 2 arranged along the sides of the contact piece 28a.
8b and 28c, and when the power switch operating member 22 described above is in the first power supply position or the second power supply position, the contact piece 28a is moved by the contact piece brush 24.
and the contact piece 28b or 28c are short-circuited to be in a conductive state, and to be in a non-conductive state when the operating member 22 is in the non-power supply position.

The switch 30 has contact pieces 30 and 30b, and only when the power switch operation member 22 is in the first power supply position, both contact pieces 30a and 30b are short-circuited by the contact piece brush 26 to be in a conductive state. Become.
The acoustic alarm activation circuit 32 becomes operable when the switch 30 becomes conductive, so the sounding body 32a emits sound in response to a signal from a photometry calculation circuit 34, a delay circuit 36, or a battery check circuit 38, which will be described later. It becomes possible to occur.

The release switch 40 is closed in conjunction with the depression of the shutter release button 18. Delay circuit 3
6 outputs a release signal to an electromagnetic release device 42 in response to the closing of the release switch 40, immediately during normal photography, and after a predetermined time when setting a self-timer. Electromagnetic release device 42
Upon receiving this release signal, the electromagnetic mechanism is activated to start a predetermined photographing operation of a mirror mechanism and a shutter mechanism (not shown).

The first photometry switch 44a is also closed in conjunction with the depression of the shutter release button 18. Furthermore, the second photometric switch 44b is closed in conjunction with the operation of the electromagnetic mechanism of the electromagnetic release device 42.
As a result, the photometry calculation circuit 34 starts photometry of the subject brightness in response to the press of the shutter release button 18, and thereafter, even if the press of the release button 18 is released, the electromagnetic mechanism continues to operate. Since the second photometric switch 44b is closed during this period, the photometric calculation continues.

The photometry calculation circuit 34 outputs a shutter speed signal when automatic shutter speed control is set, and a shutter speed signal and an aperture signal when programmed automatic exposure control is set, based on subject brightness, film sensitivity, and the like. This shutter speed signal is input to the shutter speed control circuit 46 and the acoustic notification activation circuit 32. The acoustic notification activation circuit 32 causes the sounding body 32a to generate a sound when the shutter speed signal is lower than a limit level corresponding to the camera shake shutter speed. Further, the shutter speed control circuit 46 controls the shutter speed of a shutter mechanism (not shown) based on the level of the shutter speed signal. Note that the aperture signal is input to the aperture aperture control circuit 48. The aperture aperture control circuit 48 controls the aperture aperture (not shown) of the interchangeable lens 4 based on the level of this aperture signal.

The battery check switch 50 is closed in conjunction with the depression of the battery check button 12. The battery check circuit 38 is activated by closing the switch 50, and when the voltage of the power source E is higher than a predetermined level, the battery check circuit 38 activates the light emitting diode drive circuit 52 to cause the light emitting diode 52a to emit light, and also activates the acoustic alarm activation circuit. A notification signal is output to the circuit 32 to cause the circuit 32 to operate the sounding body 32a.

When the self-timer setting is performed, the third photometry switch 44c, switch 54 and switch 5
6 is closed. Along with this, the delay circuit 36
After the release switch 40 is closed, it is set to output a release signal after a predetermined time count. This delay circuit 36 outputs an activation signal during a predetermined time count. This activation signal is input to the self-timer activation display circuit 58 via the switch 54. As a result, the display circuit 58 causes the light emitting diode 58a to blink. On the other hand, the activation signal is transmitted to the acoustic notification activation circuit 3 via the switch 56.
2 is input. Thereby, the notification activation circuit 32 generates sound from the sounding body 32a.

In the above configuration, the power switch operation member 2
2 is set to the non-power supply position, each electric circuit 32, 34, 36, 38, 42, 46, 48 of the camera
and 56 are all inactive. On the other hand, when the power switch operating member 22 is rotated counterclockwise from the non-power supply position and set to the first power supply position,
Each electric circuit can be operated by power from the power source E. Along with this, the acoustic notification activation circuit 32
is ready for operation, so when the shutter speed is controlled to the hand-brake shutter speed, while the self-timer is operating, and when the voltage of the power source E is at a predetermined level or higher during battery check, the sounding element 32a makes an acoustic sound. occurs.

Furthermore, when the power switch operating member 22 is rotated clockwise from the non-power supply position and set to the second power supply position, each electric circuit becomes operable, but the acoustic alarm activation circuit 32 becomes inactive. It does not cause any sound to be generated.

In addition to the above-mentioned examples, matters that can be alerted or notified by sound include the end of exposure during long exposure photography, the end of the photographic film, a state in which automatic exposure control is impossible, and autofocus in a camera that is capable of autofocus. Inoperation warning, flash device fully charged,
and completion of flash photography dimming.

<Effects of the invention> The present invention provides a first imaging circuit that activates the imaging circuit with the generation of sound under specific conditions during normal imaging.
and a second state in which the photographing circuit operates in the same manner as the first state except that no sound is generated during normal photographing, in which the photographing circuit operates in the first state. a first position in which the circuit is operable; and a second position in which the imaging circuit is operable in the second state.
The configuration includes a single manual operating member that can be switched between the first position and a third position that disables the imaging circuit, so that when the photographer starts normal photography, the sound generation is prevented. It is possible to appropriately and reliably select and set whether to perform photography with or without occurrence, depending on the situation at the scene and the preference of the photographer.

In addition, with the configuration of the present invention, the operator must select and use a shooting method with or without sound generation in the operating member that is operated first when starting shooting. Therefore, the function of switching between sound generation/non-generation will naturally be fully utilized.

Furthermore, the present invention specifically provides two positions on the single manual operation member to enable the imaging circuit,
The structure is such that you can switch between the generation and non-occurrence of sound by setting the camera to either of the two normally available shooting positions, so even those who are not familiar with the above switching function and its operation method can use it for the time being. If the camera is switched from the non-photographing position to one of the two positions mentioned above, normal photographing will be possible, so this will not cause any malfunction.

In addition, the present invention provides two operating positions for the operating member that switches the imaging circuit between activation and inactivation, and these two positions are used to switch between sound generation and non-generation. There is no need to provide a separate operating member, the exterior of the camera is not complicated, and the photographer is not confused about how to switch between generating and not generating sound.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a top view of a camera equipped with an acoustic alarm device, FIG. 2 is a top view of a manual operation member, and FIG. The figure is a circuit diagram of the camera. 22... Manual operation member, 34, 36, 38, 4
2, 46, 48, 52 and 58...photography circuit, 3
2 and 32a...Sound generating means.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a camera equipped with a release device for starting a photographic operation, a power switch for switching between a power supply state in which power is supplied to the release device and a non-power supply state in which power is not supplied; a first position that enables the operation of the sound generating circuit when the power switch is in the power supply state and a specific notification is made; a second position in which the sound generating circuit is inactivated when making a notification;
The power switch is provided so that it can be selectively set to one of three positions, including a third position that puts the power switch in a non-power supply state, and furthermore, a single switch that can display which of the three positions the power switch is set to is provided. A camera equipped with an acoustic notification device, characterized in that it has a manual operation member. 2. The camera according to claim 1, wherein the specific notification is made when the shutter speed signal from the photometry calculation circuit indicates a camera shake shutter speed. 3. The camera according to claim 1, wherein the specific notification is made when the self-timer is in operation. 4 When the manual operating member is in the first position, a battery check is performed with the generation of a sound, and when the manual operating member is in the second position, the battery check is performed without producing a sound. A camera according to claim 1 of the utility model registration claim, characterized in that: