JPH07110512A - Camera - Google Patents

Abstract

PURPOSE:To improve operability by performing the locking release and the popping-up or a stroboscopic device, irradiating angle varying action, mirror- down action in a camera, and shutter charge action with the normal and the reversal rotation of the same motor. CONSTITUTION:When the motor M2 for driving a stroboscope starts normally rotating, a blade 10a releases a retaining lever 12 from a fixing and locking member in the stroboscope, the case 2 of a stroboscopic unit is popped up by spring force, and the zooming of the stroboscope is performed by the continuous normal rotation of the motor M2. A motor M2 succeedingly reversely rotates, a mirror driving gear 61 rotates counterclockwise so as to pop up the main mirror 60 against a spring, and holds the mirror at the position of the upper dead point of a cam 61a. At this time, the shutter charge gear 62 rotates clockwise, a shutter charge lever 63 becomes free, and photographing is performed. After finishing the photographing, the motor M2 reversely rotates again, and mirror-down, stroboscopedown, and the shutter charge are executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera having an auto pop-up strobe device built-in or removable.

[0002]

2. Description of the Related Art Conventionally, the following camera has been proposed as a camera having an auto pop-up strobe device.

The lock of the strobe device locked at the storage position in the camera is released by a dedicated magnet to pop up the strobe device from the inside of the camera, and after the photographing is completed, the mechanical mechanism charging motor in the camera is charged. A device for returning the strobe device to the storage position by power (Japanese Patent Application Laid-Open No. HEI-2)
-18537).

The strobe device pops up when the motor rotates in the forward direction, and subsequently the strobe device drives the irradiation angle varying mechanism when the motor rotates in the same direction (Japanese Patent Application No. 2-332682 by the present applicant). ).

A dedicated motor for driving the strobe device is provided. With the motor, pop-up of the strobe device, variable irradiation angle operation, pop-down of the strobe device,
(Japanese Utility Model Publication No. 1-166327).

The motor rotates in the forward direction to pop up and pop down the strobe device, the motor rotates in the reverse direction to drive the irradiation angle varying mechanism, and the power transmission is switched by the manual clutch to wind the film by the motor. Driving a return mechanism (Japanese Patent Laid-Open No. 1-16493)
3 gazette).

[0007]

The above-mentioned conventional techniques have the following drawbacks, respectively.

(A) In the structure disclosed in the above-mentioned (Japanese Patent Laid-Open No. 2-18537), a dedicated magnet for unlocking the strobe device is required, and therefore a space for the magnet is provided. There is a drawback that it is necessary in the camera and the cost is high.

(B) The above-mentioned (Japanese Patent Application No. 2-333282)
The configuration disclosed in Japanese Patent No. 3) has a drawback in that it is difficult to use because it is necessary to manually push down the strobe device to return the pop-up strobe device to the storage position. Further, in this configuration, the locking of the strobe device is released by one-way rotation of the motor, and the strobe device is popped up by the force of the spring. Therefore, even if the power supply voltage is reduced, the pop-up operation of the strobe device may be adversely affected. However, since the motor is temporarily stopped after the strobe device pops up and then the motor is restarted to drive the irradiation angle variable mechanism, a release time lag occurs during stroboscopic photography. There is a drawback that.

(C) The above-mentioned (Actual Kaihei 1-166327)
In the configuration disclosed in Japanese Laid-Open Patent Publication No. 2003-187, since a dedicated motor is required for the strobe device, a space occupied by the motor is required and the cost of the camera is increased. Also, with this configuration, the pop-up of the strobe device is performed by the power of the motor, so if the voltage of the battery mounted on the camera drops, the pop-up speed will also drop, and therefore, the strobe will not be ready to shoot quickly. There is a risk that.

(D) The above-mentioned (JP-A-1-164933).
In the configuration disclosed in Japanese Laid-Open Patent Publication No. 2003-331, the strobe device is popped up by the rotation of the motor in the first direction, and the irradiation angle variable mechanism is driven by the rotation of the motor in the second direction. In order to operate the mechanism, it is necessary to reverse the motor once. Therefore, there is a disadvantage that a time lag occurs between the pop-up of the strobe device and the irradiation angle changing mechanism, and the camera cannot be ready for shooting. Further, when the film is rewound, the connection of the power transmission mechanism has to be manually switched, so that the operability is poor and it is difficult to use.

It is an object of the present invention to provide a camera that does not have the drawbacks of the prior art mentioned above.

[0013]

In order to realize a structure that does not have the above-mentioned drawbacks of the prior art, the unlocking and pop-up of the strobe device and the irradiation angle variable mechanism are all performed by one-way continuous rotation of the motor. It is desirable that the pop-up of the strobe device, the down movement of the mirror in the camera, and the shutter charge operation are performed by the reverse continuous rotation of the motor. The present invention is constructed based on such an idea.

[0014]

Embodiments of the present invention will be described below with reference to FIGS.

In FIG. 7, reference numeral 1 denotes an upper cover as an exterior of the camera body, which constitutes a part of the camera body. Two
Is a case of a strobe unit, which is rotatably supported by the upper cover 1 and forms a skeleton of the strobe unit. Reference numeral 2a is an oblong hole, which has a role of passing a lead wire 40, which will be described later, and absorbing movement of a member due to zooming. Reference numeral 2b denotes a fitting hole provided in the case 2, into which a pin 66b described later is rotatably fitted. Reference numeral 3 is a strobe cover that forms the appearance of a strobe unit, and is a case 2
Fixed to. Reference numeral 4 denotes a panel which covers the entire surface of the strobe unit, and has a Fresnel lens portion 4a for controlling strobe light and a window portion 4b corresponding to a red eye preventing lamp described later. Reference numeral 5 denotes a base plate, a plurality of gear shafts, a bearing 5a having an outer periphery as a rotating shaft of the case 2, and a bearing 5
It has b and a spring hook 5c, and is fixed to the back side of the upper cover 1 with a screw.

Reference numeral 6 denotes a gear, which is connected to the motor M2 fixed to the main body of the camera or the mirror BOX and the motor M2 and meshes only with one direction of rotation from a gear train including a planetary gear mechanism described later. . Reference numerals 7 and 8 denote gears, and the rotation of the gear 6 is transmitted from the gear 7 to the gear 8.

Reference numeral 9 is a gear meshing with the gear 8 and includes a main plate 5
Is rotationally fitted to the inner circumference of the bearing 5a. A gear 10 meshes with the gear 9, and has a blade portion 10a on one surface. Reference numeral 11 is a lever, which includes a shaft portion 11a, a protrusion 11b, and a spring hook 11
c, the switch pushing portion 11d, the shaft portion 11a is the bearing 5
It is rotatably supported on the inner circumference of b. The switch pushing portion 11d turns on the switch SW3 when the lever 11 moves during pop-up. Reference numeral 12 denotes a tightening lever having a claw portion 12b, which has a protrusion 12a near the claw portion 12b and is fixed to a shaft 11a of the lever 11. Reference numeral 13 is a spring, one end of which is attached to the spring hook 5c of the main plate 5 and the other end of which is the lever 1
The tension lever 12 is urged to rotate in the counterclockwise direction, that is, the claw portion 12b in the locking direction. Reference numeral 14 denotes a bearing, a part of which is fixed to the upper cover 1 and a part of which serves as a rotating shaft of the case 2.

Cases 2 and 15R have an upper cover 1
It is a screw that serves as a stopper when it rotates in the protruding direction, and is fastened to the upper cover. Reference numeral 16 denotes a spring that biases the case 2 in a protruding pop-up direction. The spring 16 is attached to a part of the outer periphery of the bearing 14, and one arm can be screwed on the screw 15R and the other arm can be hooked on the case 2. Reference numeral 17 is a fixed locking member having a hook 17a for hooking the claw portion 12b of the tension lever 12, and has cam portions 17b and 17c as shown in detail in FIG.
The cam portion 17c is an arc from the rotation axis of the case 2 and is fixed to the case 2.

When the motor M2 is driven as shown in FIGS. 3 to 5, the rotation is transmitted to the gears 6 to 10, and the blade portion 10a of the gear 10 resists the spring 13 to project the lever 11. Push down 11b. Then, the tension lever 12 is rotated in the clockwise direction like the lever 11, the claw portion 12b of the tension lever 12 is released from the hook 17a of the fixed locking member 17, and the case 2 is rotated in the protruding direction by the bias of the spring 16. The protrusion 12a starts to move and the protrusion 12a moves to the cam portion 17 of the fixed locking member 17.
abut b.

Further, the case 2 is rotated, and the case 2 is rotated by the force of the spring 16, whereby the fixed locking member 17
The protrusions 12a of the tension lever 12 are pushed by the cam portions 17b to 17c of the lever so that the tension lever 12 rotates until the protrusion 11b of the lever 11 separates from the rotation region of the blade portion 10a of the gear 10 in the region of the cam portion 17c. (Figs. 4-5). That is, the tension lever 1 is moved by the blade 10a.
2 is released, the case 2 is moved up, the tightening lever 12 is further released by the movement of the case 2, the protrusion 11b of the lever 11 is rotated outside the rotation region of the blade 10a, and the rotation of the motor M is further rotated. And tension lever 12
I am trying not to communicate to. Also, the protrusion 12a is the spring 1
While a constant frictional force is generated in the arc portion of the cam portion 17c by the urging force of 3, the strobe case 2 has screws 15L and 15L.
It rotates in the protruding direction until it comes into contact with R (FIGS. 3 to 5).

A gear 18 is coaxially fixed to the gear 9 in the upper cover 1 and is transmitted to the rotating case 2. Reference numerals 19 and 20 are idlers for transmitting the rotation of the gear 18. 21 has a cam 21a on one surface and a contact piece 31 on the other surface.
The gear (see FIG. 8) is fixed. 32 is a contact piece 31
Is a substrate (see FIG. 8) that slides, and detects the phase of the cam 21a. As described above, the gears 19 to 21 are rotatably supported by the shaft of the case 2. 22 is a roller 22 that traces the bearing and the cam 21a that are rotatably mounted on the shaft of the case 2
It is a transmission lever having a push portion 22b that pushes a and the holder 27. Reference numeral 23 denotes a spring, which is mounted on the outer periphery of the bearing of the transmission lever 22 and has one end on the case 2 and the other end on the holder 2 described later.
Can be multiplied by 7. A pressing plate 24 is screwed to the case 2 with the gears 19 to 21 and the transmission lever 22 being pressed.

Reference numeral 25 is a xenon tube, which is fastened to the reflection shade 26 with rubber (not shown). A holder 27 holds the xenon tube 25 and the reflection shade 26. A holding member 28 is fixed to the inside of the case 2. 29 is a holding member 2
8 is a shaft held by 8 and extends perpendicular to the plane of the panel 4. Reference numeral 30 denotes a rail, which has a shaft 29 and a flat rail-shaped elongated hole 30a, and is fixed to the inside of the case 2. As shown in FIG. 9, one of the holders 27 is axially slidably supported by a shaft 29, and the other of the holders 27 is slidably held by a rail portion 30a of a rail 30 at a boss portion 27b. Then, one end of the spring 23 is hooked on the protrusion 27a of the holder 27, the holder 27 is biased toward the panel 4, and the reverse rotation direction is regulated by the transmission lever 22.

That is, as shown in FIG. 2, the transmission lever 22 is swung based on the cam displacement of the cam portion 21a of the gear 21 which is rotationally transmitted from the motor M2, and the pushing portion 22b causes the protrusion 27a of the holder 27 to move to the spring 23. Push against, holder 2
The xenon tube 25 of No. 7 and the light emitting part of the reflection shade 26 are attached to the panel 4
And reciprocate vertically.

Next, 33 is a red-eye preventing lamp, and 34 is a reflecting shade for condensing the light, which is fixed to the back side of the window 4b portion of the panel 4. As described above, as shown in FIG. 8, the case 2 is divided into three rooms, and the 25 to 27 light emitting units that move to the center are
The driving mechanisms 18 to 24 are laid out on the left side, and the red-eye prevention lamp units 33 and 34 are laid out on the right side. A lead wire 40 extends through the bearing 14 to one side portion of the case 2 and is connected to the lamp 33, and further connected to the xenon tube 25 through the elongated hole 2a.

Referring to FIG. 2, a planetary gear mechanism for transmitting the output of the motor M2 will be described. Output gear 51 of motor M2
Is transmitted to the sun gear 53 via the transmission gear 52. A frictionally coupled planetary lever 54 is coupled to the central axis of the sun gear 53, and the planetary gear 5 is coupled to the planetary lever 54.
5 is pivotally supported. Therefore, the sun gear 53, the planetary lever 54, and the planetary gear 55 form a planetary gear mechanism.

Reference numeral 56 denotes a charge transmission gear, which meshes with the mirror drive gear 61 and the strobe down gear 65. Further, the mirror drive gear 61 is a shutter charge gear 62.
The gears 56, 61, 62 and 65 have the same number of teeth. The transmission gear 56 is provided with a mechanical phase signal detector MES (not shown), and the mirror drive gear 61 and the shutter charge gear 6 are provided.
2. The phase of the strobe down gear can be detected. The mirror drive gear 61 is provided with a mirror drive cam 61a on the back surface thereof,
When 6 rotates clockwise, the mirror drive gear 61 rotates counterclockwise and contacts the drive pin 60a of the main mirror 60 to jump the main mirror 60 against a spring (not shown) about a rotation shaft 60b. The cam 61a is raised and held at the top dead center position. At this time, the shutter charge gear 62
Rotates in the clockwise direction, the shutter charge cam 62a provided in the shutter charge gear 62 also rotates in the clockwise direction, and the first roller portion 63a of the first shutter charge lever 63 held at the top dead center is the shutter charge cam. It falls to the cam bottom of 62a.

The first shutter charge lever 63 has a second roller portion 13b which comes into contact with the second shutter charge lever 64, and the shutter charge cam 6 is provided.
When the top dead center of 2 escapes, it becomes free and the shutter can run.

The phase at this position is the mechanical phase detection unit ME.
Detected at S, the rotation of the motor M2 is controlled.
A strobe down lever 66 is slidably supported in the vertical direction, and pins 66a and 66b are planted at both ends thereof.

The pin 66a comes into contact with the strobe down cam 65a to slide the strobe down lever 66 downward. The pin 66b is rotatably fitted in the fitting hole 2b of the case 2, and the case 2 is moved by sliding the strobe down lever 66 downward.
The entire strobe unit can be rotated to the storage position via the.

At the mirror-up position, the strobe down gear 65 rotates counterclockwise, but the strobe down cam 65a is in the cam bottom phase with respect to the pin 66a. When the shutter travels, the motor M2 reversely rotates and the charge transmission gear 56 rotates clockwise. The mirror 6 held at the top dead center of the mirror 61a
Since 0 is released from top dead center, it returns to the down position by a spring (not shown). At the same time, the shutter charge gear 62
Rotates counterclockwise and the shutter charge cam 62
The cam lift portion of a contacts the first roller portion 63a and the first shutter charge lever 63 rotates counterclockwise to charge the second shutter charge lever 64 via the second roller 63b. As shown in FIG. 2, when the shutter charge gear 62 rotates clockwise to the top dead center position of the shutter charge cam 62a, the motor M2 is stopped by the mechanical phase signal MES of the charge transmission gear 56. The strobe down gear 65 rotates counterclockwise in synchronism with the shutter charge, and the cam lift portion of the strobe down cam 65a abuts on the pin 66a so that the strobe down lever 6 is released.
6 slides downward. When the strobe down lever 66 slides downward, the strobe unit moves the spring 16 around the rotation axis of the gear 65 and the bearing 14.
As shown in FIG. 3, the claw portion 1 of the tightening lever 12 is resisted against
2b slides downward until the hook 17a of the fixed locking member 17 is engaged, and further the strobe down cam 6
The pin 66a is rotated beyond the top dead center of 5a to a position corresponding to the cam bottom of the strobe down cam 65a, and the strobe down lever is not restricted when the strobe unit is next raised. This position coincides with the shutter charge completion position, and the mechanical phase detection unit M provided with the charge transmission gear 56.
Detected by ES, the motor M2 is controlled.

When the strobe unit is manually lowered in the state of FIG. 2, it is pushed down and locked until the claw portion 12b and the hook 17a are engaged, and the strobe down lever 66 is driven and slides downward. . If the shutter charge operation is performed as it is, the strobe down lever 66
Has a configuration in which even if the battery is simply charged empty, it can be lowered manually or automatically lowered by the motor M2 in conjunction with the shutter charging operation.

FIG. 10 is a circuit block diagram of the camera of this embodiment.

The PRS is for performing camera control. For example, a CPU (Central Processing Unit) ROM, RAM,
It is a one-chip microcomputer (hereinafter, abbreviated as a microcomputer) having an A / D conversion function. The microcomputer PRS controls a series of camera operations such as automatic exposure control, automatic focus detection, strobe control, film winding, and mechanical charging according to the camera sequence program stored in the ROM.

Therefore, the microcomputer PRS is provided with the synchronous communication signals SO, SI, SCLK and the communication selection signals CLCM, CS.
The DR and CDR are used to communicate with the peripheral circuits and the lens in the camera body to control the operation of each circuit and lens.

SO is a data signal output from the microcomputer PRS, SI is a data signal output from the microcomputer PRS, and SCLK is a synchronous clock of the signals SO and SI.
The LCM is a lens communication buffer circuit, which supplies power to the lens power supply terminal while the camera is operating, and when the selection signal CLCM from the microcomputer PRS is at a high potential level (hereinafter abbreviated as “H”), the camera. And becomes a communication buffer between lenses. That is, when the microcomputer PRS sets the selection signal CLCM to "H" and sends out predetermined data from the signal SO in synchronization with the synchronization clock SCLK, the buffer circuit LCM causes the synchronization clock SCLK and the signal SO to pass through the camera-lens indirect point. Output the buffer signal to the lens. Similarly, a signal such as the lens focal length from the lens is output as a signal SI, and the microcomputer PRS inputs the signal SI as data from the lens in synchronization with the synchronization clock SCLK.

SDR is a drive circuit of a line sensor device for focus detection which is composed of a CCD or the like, and is selected when the communication selection signal CSDR is "H", and signals SO, SI,
It is controlled using the clock SCLK.

SPC is an exposure control photometric sensor that receives light from a subject through the taking lens, and its output S
The SPC is input to the analog input terminal of the microcomputer PRS, A / D converted, and then used for automatic exposure control (AE) according to a predetermined program.

DDR is a circuit for switch detection and display, which is selected when the signal CDRD is "H" and the signal S is selected.
Microcomputer PR using O, SI and synchronous clock SCLK
It is controlled by S. FMS is a film feed detection circuit,
The detection output is input to the circuit DDR as the signal SFMS.
MES is a mechanical phase detection circuit such as a shutter and a mirror.
The detection output is input to the circuit DDR as the signal SMES.

FLS detects the presence or absence of pop-up or the zoom phase by the phase detection circuit of the strobe and outputs the signal SFLS.
Is input to the circuit DDR. X is a switch which is turned on when the front curtain has finished running, and CN2 is a switch which is turned on when the rear curtain has finished running.

That is, the display of the display member DSP of the camera is switched based on the data sent from the microcomputer PRS, and switches or status signals interlocking with various states of the camera are notified to the microcomputer PRS by communication.

The switches SW1 and SW2 are interlocked with a release button (not shown), and the switch SW1 is turned on when the release button is pushed down in the first stage, and the switch SW2 is turned on when the release button is pushed down to the second stage. . The microcomputer PRS is a switch SW as described later.
When 1 is turned on, photometry, automatic focus adjustment, strobe pop-up, and red-eye prevention light emission are performed, and when switch SW2 is turned on, exposure control, strobe light emission, and film winding are performed. SW3 is a switch for detecting the completion of strobe pop-up, and detects the movement of the lever 11 described above. M1 is a film feeding motor, M2 is a motor for mirror up / down, shutter charge and strobe pop-up, and zoom drive. Each drive circuit MDR
Forward rotation and reverse rotation are controlled by 1 and MDR2. The signals M1F, M1R, M2F and M2R input from the microcomputer PRS to the drive circuits MDR1 and MDR2 are signals for motor control.

MG1 and MG2 are shutter front curtain and rear curtain running start magnets, which are used to generate signals SMG1 and SMG2, respectively.
The amplification transistors TR1 and TR2 are energized, and the microcomputer PRS controls shutter control.

LAMP is a lamp for preventing red eye and has a signal S
The LAMP and the amplification transistor Tr3 are energized, and the light emission control is performed by the microcomputer PRS.

FLS is a strobe circuit including a main capacitor and a xenon tube, and has a light emission signal FS and a light emission stop signal F.
PR via 0, charge start signal SC, charge completion signal CF
Controlled by S.

SW4 is a switch indicating whether or not the red-eye prevention mode is set.

The operation of the camera having the above structure will be described with reference to the flowchart of FIG. When a power switch (not shown) is turned on, power supply to the microcomputer PRS is started, and the microcomputer PRS starts executing the sequence program stored in the ROM. When the execution of the program is started by the above operation, the switch SW1 which is turned on by pressing the release button in the first step is detected after step 1, and when the switch SW1 is off, the process proceeds to step # 3 and the inside of the microcomputer is detected. All the control flags and variables set in the RAM are cleared and initialized.

Steps 2 and 3 are repeatedly executed until the switch SW1 is turned on or the power switch is turned off. When the switch SW1 is turned on, the process proceeds to step 4.

In step 4, the charge state of the strobe is checked, and if it is not charged, the process proceeds to step 5 and the microcomputer P
The RS outputs a strobe charge start signal SC to start charging and perform charging. When the charging is completed, a charging completion signal CF is generated, and the process proceeds to step 6 to execute a photometric subroutine for exposure control. The microcomputer PRS inputs the output SSPC of the photometric sensor SPC shown in FIG. 10 to an analog input terminal to perform A / D conversion, and calculates optimum shutter control value and aperture control value from the digital photometric value, and The necessity of using the strobe is judged and stored in a predetermined address of the RAM. Then, the AF operation in step 7 is completed, and if the strobe is required in step 8, the strobe is set to the use state. In the release operation, the shutter and diaphragm are controlled based on these values. Next, in step 9, the focal length of the lens used is detected. Here, the current focal length information of the taking lens is input to the microcomputer PRS via the lens communication buffer circuit. Next, the routine proceeds to step 10, where the microcomputer M2F signal is output to start the normal rotation of the motor M2, and
10 is rotated, the tightening by the tightening lever 12 is released, and the strobe is popped up by the spring 16. In step 11, it is detected whether or not the strobe has gone up by turning on the switch SW3.

Next, in step 12, it is checked whether or not the zoom position is the predetermined zoom position. That is, the strobe zoom detection board 3
The signal No. 2 is transmitted to the microcomputer PRS via the strobe phase detection circuit FLS, and the forward rotation of the motor M2 is stopped when the strobe irradiation angle position corresponding to the focal length of the photographing lens is reached. A pattern corresponding to the focal length (cam phase) is formed on the detection substrate 32, and the zoom state of the strobe can be detected by sliding the contact piece 31 on the pattern. The motor M2 continues to rotate forward until step 13, and zooms in continuously after pop-up. When the zoom drive is performed, the strobe pops up, so the tension release mechanism retracts to the non-engaged position and continues to swing, and the protrusion 11b of the lever 11 moves from the rotation region of the blade 10a.
Only the strobe zoom mechanism is driven.

Next, the routine proceeds to step 14, where it is judged from the state of the switch SW4 whether or not the red-eye prevention mode is set. If the red-eye prevention mode has not been set, the routine proceeds to step 18, and if the red-eye prevention mode has been set, the routine proceeds to step 15.

When the red eye prevention mode is set, FIG.
The lamp LAMP (red-eye prevention lamp 33) is turned on by the "H" signal of the signal SLAMP of the microcomputer PRS at, to illuminate the subject and squeeze the pupil to prevent red-eye. Next step 1
In step 6, the state of the switch SW2 which is turned on when the release button is pressed in the second step is detected. Switch SW2
If is off, wait here. If the switch SW2 is on, the process proceeds to step 17. In step 17, the red-eye timer determines whether or not the time required to narrow the pupil has elapsed. If the required time has not elapsed, continue to light the lamp LAMP until the time has elapsed. When the required time has elapsed, the process proceeds to step 19. If it is determined in step 8 that the strobe is not necessary, the process proceeds to step 18 and it is determined whether the switch SW2 is on. Also, if the red eye prevention mode is not set in step 14, the process proceeds to step 18 and it is determined whether the switch SW2 is on. When the switch SW2 is turned on, the process proceeds to step 19 and the operation corresponding to the release operation is performed. That is, the signal M2R of the microcomputer PRS causes the motor M2 to rotate in the reverse direction, and the planet gear 55 is meshed with the mirror drive gear to perform the mirror-up operation. When the mirror up is completed, the signal SI is sent to the microcomputer PRS via the input phase detection circuit MES, and the motor M2 is stopped.
Next, the shutter front curtain magnet MG1 is excited by the signal SMG1 of the microcomputer PRS, and the shutter front curtain travels by a spring force (not shown) to expose the film. After that, the signal SMG2 is generated with a delay of a predetermined time based on the shutter seconds calculated in step 6, the shutter rear curtain magnet MG2 is excited, and the shutter rear curtain travels. When a strobe is required, this shutter time is set at the strobe sync second. If a strobe is required, the process proceeds to step 20, and the X contact that turns on when the running of the front curtain is completed is determined. Circuit D when the X contact turns on
A signal is sent to the microcomputer PRS via DR, and the strobe emits light in step 21 (flashes the xenon tube 25). The strobe will not fire if it is not needed. When the strobe emits light, the strobe emission stop signal FO is generated based on the output of the light control circuit (not shown), and the strobe emission is stopped. Next, the routine proceeds to step 22, where it is determined whether or not the trailing curtain has finished traveling. When the traveling of the rear curtain is completed, the switch CN2 is turned on, a signal is transmitted to the microcomputer PRS via the circuit DDR, and the routine proceeds to step 23. In step 23, the motor M2 reversely rotates based on the signal M2R, and the mirror down, the shutter charge and the strobe down are performed. When the mirror down, shutter charge and strobe down are completed, a signal is transmitted to the microcomputer via the mechanical phase detection circuit MES and the motor M
The reversal of 2 stops. Next, in step 24, the film is fed. The motor M1 normally rotates based on the signal MIF of the microcomputer PRS to wind up the film.

When the film for one frame is wound up, a signal is transmitted to the microcomputer PRS via the film signal detection circuit FMS, and the normal rotation of the motor M1 is stopped.

In step 25, it is checked whether or not the film is finished based on the film feeding in step 24. When the film is finished, the routine proceeds to step 26, where the microcomputer PRS outputs the M1R signal and the motor M1 rotates in the reverse direction.

When the motor M1 rotates in the reverse direction, the driving force of the motor is switched to the rewinding transmission system via the known planetary gear clutch, and the rewinding is automatically performed. If the film is not finished, the process proceeds to step 27 to determine the completion of charging, and if it is not charged, the process proceeds to step 28 to perform charging to prepare for the next shooting.

[0055]

As described above, in the camera of the present invention, unlocking, pop-up and irradiation angle changing operation of the strobe device are all performed by one-way continuous rotation of the motor M2, and the pop-down of the strobe device and the inside of the camera are performed. Since the mirror down operation and the shutter charge operation are performed by the continuous rotation in the reverse direction of the motor, all the operations required at the time of stroboscopic photography can be continuously and automatically performed by only one motor. Therefore, it is possible to get into the shooting position quickly, and there is no release time lag, so there is no risk of missing a photo opportunity.

Further, in the camera of the present invention, the motor M2 is not used also as the film rewinding motor, so that a manual switching operation or the like is unnecessary.
It is possible to provide a camera that is easy to use and has good operability.

[Brief description of drawings]

FIG. 1 is a flowchart showing functions and main operations of a camera according to the present invention.

FIG. 2 is a diagram showing a mechanism related to a strobe device of a camera of the present invention.

FIG. 3 is a diagram showing a state in which the strobe device is locked at a storage position in a camera.

FIG. 4 is a view showing a state where the locking of the strobe device is about to be released.

FIG. 5 is a diagram showing a state where the strobe device is unlocked and the device pops up.

FIG. 6 is a view showing a cam that controls unlocking of the strobe device.

FIG. 7 is an exploded perspective view showing a related structure of a strobe device of a camera of the present invention.

8 is a cross-sectional view of the structure shown in FIG. 7 as seen from the front side of the camera.

FIG. 9 is a perspective view showing a structure related to an irradiation angle varying mechanism of a strobe device, FIG.
(B) is a view seen obliquely from the rear.

FIG. 10 is a block diagram showing a schematic structure of an electronic control system in the camera of the present invention.

[Explanation of symbols]

1 ... Top cover 2 ... Strobe unit case 3 ... Strobe unit cover 6-10, 18
-21 ... Gear 11 ... Lever 12 ... Tightening lever 13, 16, 23 ... Spring 14 ... Bearing 17 ... Fixed locking member 22 ... Lever 24 ... Suppression plate 25 ... Xenon tube 27 ... Holder M1 ... First motor M2 ... No. Second motor 60 ... Mirror 61 ... Mirror drive gear 62 ... Shutter charge gear 63 ... First shutter charge lever 64 ... Second shutter charge lever 65 ... Strobe down gear 66 ... Strobe down lever

Claims (4)

[Claims] 1. A camera capable of moving between a protruding position protruding from the camera and a housing position housed in the camera, and having a built-in or detachable strobe unit having a strobe light irradiation angle varying mechanism. A tightening mechanism that performs a locking operation for locking the strobe unit in the storage position and a locking release operation for unlocking the strobe unit, and moves the strobe unit from the protruding position to the storage position. A drive mechanism, a motor that supplies power to the tightening mechanism, the drive mechanism, and the irradiation angle varying mechanism, and a forward rotation of the motor is transmitted to the tightening mechanism and the irradiation angle varying mechanism to reverse the motor. A power transmission switching mechanism for transmitting directional rotation to at least the drive mechanism, and when the motor is rotated in the forward direction, first, the tightening mechanism causes the strobe unit to move. When the stop release is performed, the strobe unit is moved from the storage position to the projecting position, the irradiation angle varying mechanism is subsequently driven, and when the motor is rotated in the reverse direction, the strobe unit is driven by the driving mechanism. Is moved from the protruding position to the storage position. 2. A camera, which is movable between a projecting position projecting from the camera and a housing position housed in the camera, and in which a strobe unit having a strobe light irradiation angle varying mechanism is built-in or detachable, A tightening mechanism that performs a locking operation for locking the strobe unit in the storage position and a locking release operation for unlocking the strobe unit, and moves the strobe unit from the protruding position to the storage position. A drive mechanism, a motor that supplies power to the tightening mechanism, the drive mechanism, and the irradiation angle varying mechanism, and a forward rotation of the motor is transmitted to the tightening mechanism and the irradiation angle varying mechanism to reverse the motor. And a power transmission switching mechanism that transmits directional rotation to the drive mechanism and another driven mechanism in the camera. When the locking of the robo unit is performed, the strobe unit is moved from the stored position to the projecting position, the irradiation angle varying mechanism is subsequently driven, and when the motor is reversely rotated, the driving mechanism is driven. The strobe unit is moved from the projected position to the stored position by the motor, and the driven mechanism is driven by the motor through the power transmission switching mechanism. 3. The camera having a TTL finder optical system, a raising / lowering mirror, and a raising / lowering mechanism for the mirror, wherein the driven mechanism is the mirror raising / lowering mechanism and a shutter charge mechanism. Camera 4. A forward rotation of the motor is performed by an operation of unlocking the strobe unit, an operation of moving the strobe unit from the storage position to the protruding position, and an operation of driving the irradiation angle varying mechanism. The operation is continuously performed without stopping, and the operation of moving the strobe unit from the protruding position to the storage position and the operation of driving the driven mechanism are continuously performed without stopping the reverse rotation of the motor. The camera according to claim 2, wherein: