JPS6237378B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a camera self-timer operation display device, more specifically, the completion of operation of the camera self-timer is indicated by flashing a strobe device built into the camera. , relates to a self-timer operation display device.

When the camera's self-timer is activated, the light emitting diode flashes and the piezoelectric sound element generates an intermittent sound to indicate that the self-timer is in operation, and when the self-timer completes operation, 2. Description of the Related Art A self-timer operation display device is already known in which a light emitting diode stops emitting light and a piezoelectric sounding element stops generating light to indicate the completion of the self-timer operation. In addition, some self-timer operation display devices reduce the blinking interval of the light emitting diode or the sounding interval of the piezoelectric sound element as the self-timer time elapses, until the shutter starts operating. There are also devices that allow you to identify the waiting time.

However, in such a self-timer operation display device that indicates the operation of the self-timer by light emission from a light emitting diode or sound from a piezoelectric sound element, the light emission brightness of the light emitting diode is low, and the volume of the piezoelectric sound element is also low. Because it was small, it had the disadvantage that in bright or noisy places, it was difficult to determine when the self-timer had finished operating and the shutter had turned off.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned conventional drawbacks, an object of the present invention is to provide a charging switch for a camera incorporating a strobe device, which charges the flash light emitting power of the strobe device while the self-timer is operating, and a charging switch that charges the flash light source of the strobe device when the self-timer is activated. A light-emission timing for selecting either a light-emitting switch for indicating self-timer operation that causes the strobe device to emit flash light, and a light-emitting switch for flash photography consisting of the light-emitting switch for indicating self-timer operation and a synchronization switch for normal flash photography. To provide a self-timer operation display device for a camera, which is provided with a selection switch and displays completion of the self-timer operation by flashing a strobe device.

According to the present invention, when the self-timer is used even during non-stroboscopic photography, since the strobe device emits a flash, it is possible to clearly determine whether the self-timer has completed its operation. At this time, since the flash light emission of the strobe device is performed in conjunction with the completion of the closing operation of the shutter, there is no risk of overexposure due to this light emission.
Furthermore, when photographing with a strobe, the flash of the strobe device is emitted as usual when the shutter is fully opened.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

FIG. 1 shows the external appearance of a camera equipped with a self-timer operation display device of the present invention. This camera 1 is a so-called lens shutter camera, and has a photographic lens barrel 3 that supports a photographic lens 2 protruding from the center of its front surface. On the front of 1,
A finder window 4 and a distance measuring window 5 are arranged in parallel. A self-timer set member 6 and a self-timer start member 7 are provided on the left side (in the drawing) of the photographic lens barrel 3, respectively. Further, on the right side (in the figure) of the photographic lens barrel 3, a pop-up button 9 for raising the flash light emitting section 8 of the strobe device is provided. The flashlight emitting section 8 is formed of a rectangular parallelepiped with a light emitting window 8a formed on the front surface, and is located in a storage section 1a (see FIG. 2) formed by cutting out the upper right corner of the front surface of the camera 1. It is housed in the camera 1, and its outer surface is flush with the outer surface of the camera 1, so that it is integrated into the camera 1. When the pop-up button 9 is pressed, the flash light emitting unit 8 is activated.
As shown in FIG. 2, it protrudes upward from the storage portion 1a and takes a flash photography position where it floats above the top surface of the camera 1.

Further, on the top surface of the camera 1, there are provided a photographic film winding knob 11, a shutter release button 12, and a photographic film rewinding knob 13, respectively. Furthermore, a rear cover 15 is provided on the back side of the camera 1 using a hinge 14 so as to be openable and closable.

The self-timer set member 6 and self-timer start member 7 are connected to a well-known self-timer mechanism, as shown in FIG. This self-timer mechanism includes a shutter release member 21 that operates a shutter (not shown) disposed inside the camera 1 in conjunction with pressing of the shutter release button 12, and a shutter release member 21 that operates the shutter release member 21 when the shutter release button 12 is pressed. A shutter actuating member 23 that is pushed down via a moving lever 22, a main drive shaft 24 to which this shutter actuator 23 is integrally fixed, one end of which is fixed to the main drive shaft 24, and the other end of which is attached to a fixed member of the camera 1 (not shown). A self-timer driving mainspring spring 25 is fixed to a main drive shaft 24 and is arranged to wind around a main drive shaft 24, a one-way clutch mechanism consisting of a clutch gear 26, a clutch plate 27 and a clutch ring 28; A spacer plate 29 inserted between the directional clutch mechanism and the mainspring spring 25, and three stepped gears 3.
1 to 33 and gears 34 are sequentially meshed with each other, and a timing mechanism includes an escape wheel 35 provided coaxially with the gear 34 and an anchor 36 that engages with and disengages from the escape wheel 35. The main part thereof is constituted by a stop lever 37 whose one end is connected to the self-timer start member 7 and whose other end is adapted to prevent the intermittent movement of the pallet pallet 36.

The shutter operating member 23 is provided with an operating portion 23a and a stopper portion 23b, which are two projecting pieces.
It is designed to engage with a. When the self-timer setting member 6 is rotated and set in the counterclockwise direction shown by the arrow, the shutter operating member 23 is activated by the charge portion 6a.
a is pushed and rotated counterclockwise, which rotates the main drive shaft 24 and serves to store the driving force in the mainspring spring 25 when the self-timer is activated.
Further, when the self-timer start member 7 is rotated and operated in the clockwise direction indicated by the arrow, it is rotated clockwise by the stored force charged in the mainspring spring 25, and is pushed by the operating portion 23a. The actuated portion 22a, which is one end of the movable lever 22, is pushed and moved to rotate the push lever 22 counterclockwise, which serves to push down the shutter release member 21 and operate the shutter.

Note that the maximum rotation position of the shutter operating member 23 in the counterclockwise direction is determined by the stopper portion 23b.
is determined by abutting against a stopper member (not shown), and the position of the self-timer in the non-set state after moving back clockwise is determined by abutment of the operating portion 23a against a stopper member 38. It is becoming more and more defined.

The push lever 22 is formed of an inverted L-shaped lever pivotally mounted on a support shaft 39, and is connected to the operating portion 23 of the shutter operating member 23.
One end of a coil spring 41 that biases the push lever 22 counterclockwise is engaged with one arm provided with the actuated portion 22a that engages with the lever 22a. Further, the other arm of the pushing lever 22 has a pushed piece 21a whose tip end projects from the shutter release member 21.
The pushing part 22b is engaged with the pushing part 22b.

When the shutter operating member 23 is rotated counterclockwise, the push lever 22
3a collides with the actuated portion 22a and the coil spring 41
When the actuating portion 23a passes by, the pushing portion 22b rotates counterclockwise due to the restoring elasticity of the coil spring 41, and the pushing portion 22b releases the pressed portion of the shutter release member 21. It is designed to stop at the position where it abuts against the piece 21a. and,
When the shutter operating member 23 rotates clockwise, the operating portion 23a collides with the actuated portion 22a and is pushed counterclockwise, and the pushed portion 22b directs the pushed piece 21a downward. and press down.
The shutter release member 21 is pushed down to release the shutter.

The main drive shaft 24 includes, from its tip end, a support shaft portion 24a to which the self-timer set member 6 is rotatably pivoted, a mounting shaft portion 24b to which the shutter operating member 23 is fixed, and one end of the mainspring spring 25. A rotating shaft portion 24c that is fixedly wound and a mounting shaft portion 24d that fixes the clutch plate 27 are coaxially formed in this order. The mounting shaft portions 24b and 24d have an oval-shaped cross section with cut-off plane portions on their symmetrical side surfaces. The fitting holes 23c and 27a fit together to integrally attach the actuating member 23 and the clutch plate 27.

The clutch gear 26 has a bearing hole 26 in the center.
b is bored, and this bearing hole 26b is rotatably fitted to the mounting shaft portion 24d of the driving shaft 24. The clutch gear 26 has a circular recess 26a formed in its front surface, and the clutch plate 27 and clutch ring 28 are housed in the recess 26a. The clutch plate 27 has a clutch ring 28 on its outer periphery.
The clutch gear 26 is a circular plate having three notches 27b for loosely fitting the clutch gear 26, and when the plate 27 is rotated clockwise,
The clutch ring 28 is held between the clutch plate 27 and the clutch gear 26, and the rotational movement is transmitted to the clutch gear 26. Also, when the plate 27 rotates counterclockwise, the clutch ring 28
is loosely moved between the clutch plate 27 and the clutch gear 26, so that rotational motion is not transmitted to the clutch gear 26.

The escape wheel 35 is provided so as to be integrated with the final stage gear 34 of the reduction gear train through a rotation shaft 42, and the pallet pallet 36 is connected to the support shaft 43.
The engaging portions at both ends thereof are swingably provided so as to engage and disengage between the teeth of the escape wheel 35. The stop lever 37 is swingably supported by a support shaft 44, and the other arm includes a horizontally bent piece that abuts one end of the ankle 36 to prevent intermittent movement. A portion 37a is formed. Further, one end of a tight coil spring 45 is attached to the other arm, giving the stop lever 37 the habit of rotating counterclockwise. In normal life, this rotation due to the habit is caused by the locking portion 7 extending from the self-timer start member 7.
This is prevented by abutting the engaged portion 37b, which is an end of one arm of the stop lever 37, with the stop lever 37.
Then, when the self-timer start member 7 is rotated in the clockwise direction indicated by the arrow and the locking portion 7a pushes the locked portion 37b of the stop lever 37,
The stop lever 37 rotates clockwise around the support shaft 44, and the blocking portion 37a retreats from the position where it contacts the pallet pallet pallet 36, and the timing operation is started by the cooperation of the pallet pallet 36 and the escape wheel 35. It's becoming like that.

The self-timer mechanism configured in this manner further includes a movable contact member 51 that constitutes a charging switch S ₂ (see FIG. 9) for charging the power source for flash emission of the strobe device while the self-timer is operating. and a fixed contact piece board 52 are connected.
That is, an oval-shaped fitting hole 53a formed in a mounting plate 53 to which the movable contact piece member 51 is fixed is fitted into the mounting shaft portion 24d that protrudes from the bearing hole 26b of the clutch gear 26 toward the rear side. Mounting plate 53
is fixed, and a fixed contact piece board 52 is arranged behind this mounting plate 53.

The movable contact piece member 51 has two long and short conductive contact pieces 51a and 51b, and both contact pieces 51
a, 51b are partially arc-shaped stationary contact patterns 54a, 5 provided concentrically on the stationary contact base 52;
4b, respectively. The fixed contact piece pattern 54a is formed shorter than the fixed contact piece pattern 54b, the short contact piece 51b is always in contact with the pattern 54b, and the long contact piece 51a is in contact with the pattern 54a during the operation of the self-timer. (See FIGS. 4A to 4C). Both patterns 54 above
a and 54b are connected through lead wires to an electric circuit of a self-timer operation display device, which will be described in detail later in FIG. 9.

On the other hand, the pop-up mechanism of the flash light emitting section 8 of the strobe device is constructed as shown in FIG. That is, from the left rear position of the bottom surface of the rectangular parallelepiped flash light emitting unit 8, a pillar 61 made of a rectangular prism for supporting and guiding the light emitting part projects downward. A rectangular guide hole 1 is drilled in the left rear position of the bottom of the storage compartment 1a.
b (see Fig. 2), and is slidably fitted into it. At the lower end of this support 61, there is a protrusion 6 for being locked.
1a protrudes toward the left, and a mounting portion 61b for fixing movable contact members 66, 67, which will be described later, protrudes toward the right. Further, an extensible coil spring 62 is inserted between the bottom of the support column 61 and a stationary member (not shown) of the camera 1, and this coil spring 62 is inserted upward into the flash unit 8. This gives them the habit of moving toward the target.

The locking lever 63 is attached to the locking protrusion 61a.
The locking portion 63a extends so that it can be engaged. This locking lever 63 is formed of a vertically elongated lever that is swingably disposed around a support shaft 64, and the locking portion 63a has one arm end extending upward and facing horizontally backward. It is formed by being bent.
Further, one end of a compressible coil spring 65 is engaged with the other arm end of the locking lever 63 that extends downward, and the lever 63 is rotated clockwise around a support shaft 64. We are given the habit of doing so. This rotation due to habit is regulated by the middle of the other arm of the locking lever 63 coming into contact with the pop-up button 9. When the pop-up button 9 is pressed, the locking lever 63 rotates counterclockwise around the support shaft 64, and the locking protrusion 61a and the locking portion 6
3a, the flash light emitting unit 8 is lifted upward by the elasticity of the coil spring 62. Moreover, when the flashlight emitting part 8 is pushed down into the storage part 1a, the locking protrusion 6
The locking part 63a is pushed around on the lower surface of 1a and temporarily rotates counterclockwise, but when the locking part 63a gets over the locked protrusion 61a, the coil spring 65
It moves back clockwise by the tightening elasticity of the flash unit 8 and serves to lock the flashlight emitting unit 8 in the storage position again.

Two movable contact pieces 66 and 67, each having two conductive contact pieces 66a, 66b and 67a, 67b, are fixed to the mounting portion 61b. Contact piece 6 of the movable contact piece member 66
6a and 66b are fixed contact strip patterns formed so that the contact pieces 66b extend longer than the contact pieces 66a in the horizontal direction, and are formed in parallel in the vertical direction on the left side of the fixed contact piece substrate 68. 69a, 6
9b, respectively. The fixed contact piece pattern 69a is the fixed contact piece pattern 69
b, so that the contact piece 66a is always in contact with the flash light emitting unit 8 when it is in either the strobe shooting position or the stowed position, and the fixed contact piece pattern 69b is ,
The contact piece 66b comes into contact only when the flashlight emitting unit 8 is in the strobe photographing position (see FIGS. 6A and 6B). Therefore, the movable contact piece member 66 and the fixed contact piece patterns 69a and 69b are arranged so that when the flash light emitting section 8 takes the strobe photographing position,
It constitutes a strobe power switch _S1 that starts charging the strobe device, and the fixed contact patterns 69a and 69b are connected to an electric circuit of a self-timer operation display device, which will be described later in FIG. 9, through lead wires. There is.

Further, the contact piece 67a of the movable contact piece member 67,
67b is formed so that the contact piece 67a extends longer than the contact piece 66b in the horizontal direction, and the contact piece 67b extends further further than the contact piece 67a. The contact piece 67a is adapted to come into contact with a fixed contact piece pattern 71a formed vertically in the middle right of the fixed contact piece substrate 68. In addition, the contact piece 67b
are fixed contact strip patterns 71b ₁ and 71b ₂ formed vertically in sequence near the right end of the fixed contact strip board 68.
selectively come into contact with That is, the contact piece 67a is always in contact with the fixed contact piece pattern 71a, the contact piece 67b is in contact with the fixed contact piece pattern _71b2 at the storage position of the flashlight emitting unit 8 (see FIG. 6A), and at the strobe photography position. Fixed contact piece pattern 7
1b ₁ (see Figure 6B). As a result, the movable contact member 67 and the fixed contact patterns 71a, 71b ₁ and 71b ₂ select whether the strobe device emits a flash when the shutter is fully opened or when the shutter closes. The fixed contact patterns 71a, 71b ₁ , 71b ₂ are connected to the electric circuit of the self-timer operation display device detailed in FIG _. 9 through lead wires. It is connected to the.

Reference numerals 72a and 72b in FIG. 5 indicate lead wires that connect the flash discharge tube F (see FIG. 9) housed in the flash light emitting unit 8 to the electric circuit of the self-timer operation display device. .

On the other hand, as shown in FIG. 7, in connection with the shutter drive mechanism, a flash light switch S ₄ for flash photography and a flash switch S ₅ for self-timer operation indication are used as trigger switches for the flash discharge tube F of the strobe device. are arranged respectively. That is, the shutter drive mechanism includes a rotary disk 73 for driving the shutter, which rotates once in relation to one photographing operation;
A shutter drive lever 74 that swings back and forth once in conjunction with one rotation of the rotary disk 73, and two upper and lower shutter blades 75 that open and close in conjunction with one reciprocation of the drive lever 74 (however, (The upper shutter blade is not shown in the figure.), and is arranged near the shutter drive lever 74 by pressing pieces 74a and 74b provided on the shutter drive lever 74. A light emitting switch _S4 for flash photography and a light emitting switch _S5 for indicating self-timer operation are opened and closed, respectively.

The shutter drive rotary disk 73 is adapted to rotate once in the direction of the arrow by a rotation shaft 76 in accordance with one photographing operation, and an eccentric pin 77 is provided near the periphery of the upper surface thereof. It is planted.
This eccentric pin 77 is attached to the shutter drive lever 74.
A long hole 7 bored in the horizontal drive section formed by the first arm end of the
It is inserted into 4c. The shutter drive lever 74 is formed of a Y-shaped lever that is swingably disposed around a horizontal support shaft 78, and the portion opposite to the first arm provided with the horizontal drive section is It branches into a second arm on which a shutter drive pin 79 is erected, and a third arm on which the pressing pieces 74a and 74b are formed. The pressing piece 74a for closing the light emitting switch _S4 for flash photography is formed of a raised piece formed by bending a part of the middle part of the third arm, and is also used to display the self-timer operation. The pressing piece 74b for closing the light emitting switch _S5 is formed of an upright piece formed by bending the tip of the third arm. The shutter blade 75 is swingably supported at its base by a support shaft 81,
The shutter drive pin 79 is fitted into a long hole 81a drilled near the base thereof.

The above-mentioned flash photography light-emitting switch _S4 and self-timer operation display light-emitting switch _S5 each include two conductive contact members 82a, each made of a plate spring member.
82b and 83a, 83b,
The contact piece member 82 is
When a and 83b are pushed and moved, 2
two contact pieces 82a and 82b and 83a and 83
b are in contact with each other, and the switches S ₄ and S ₅ are closed.

The closing timings of each of the switches S ₄ and S ₅ are selected as shown in FIGS. 8A to 8C. That is,
In the state before photographing starts, as shown in FIG. 8A, the shutter blade 75 is closed and the switches S ₄ and S ₅ are open.
Then, when the shutter release member 21 is pushed down to start photographing, the rotating disc 73
The shutter is rotated counterclockwise to the fully open position shown in FIG. 8B. Then, the shutter drive lever 74 is swung clockwise around the support shaft 78, and the pressing piece 74a pushes the contact piece member 82a to close the flash photography light emitting switch _S4 .
Subsequently, when the rotary disk 73 rotates further, the shutter drive lever 74 starts to move counterclockwise around the support shaft 78, and the contact piece member 82a, which has escaped the pressure of the pressing piece 74a, uses its own elasticity. It is restored to its original position and switch _S4 is released. When the rotary disk 73 further rotates, the shutter blade 75 is further narrowed down from the fully closed state during non-photography, as shown in FIG. 8C. As a result, the contact piece member 83b is pushed by the pressing piece 74b of the shutter drive lever 74 that swings counterclockwise around the support shaft 78, and the self-timer operation display light emitting switch _S5 is activated. Closed. Then, when the rotary disk 73 rotates once and returns to the state before the start of photography as shown in FIG. escapes from the restriction of the pressing piece 74b and returns to its original position due to its own elasticity, and the switch _S5 is opened.

Note that the conductive contact members 82a, 82b, 83a, and 83b forming the switches _S4 and _S5 are respectively connected to the electric circuit of the self-timer operation display device detailed in FIG. 9 through lead wires. Of course. In addition, in Fig. 7, the symbol O
indicates the central optical axis of the photographic lens 2 (see FIG. 1).

FIG. 9 shows a specific example of the electric circuit of the self-timer operation display device. The electric circuit of this self-timer operation display device is constructed by connecting the above-mentioned switches S ₁ to S ₅ to the electric circuit of the strobe device.

In FIG. 9, the electric circuit of the strobe device surrounded by a two-dot chain line is composed of a power supply circuit section consisting of a DC-DC converter and a flash light emitting circuit section for causing the flash discharge tube F to emit flash light. The above power supply circuit section includes a DC power supply E ₀ , converter transistors Q ₁ and Q ₂ , and a step-up transformer L consisting of a primary coil L ₁ , a secondary coil L ₂ , and a tertiary coil L ₃
, a capacitor _C1 for stabilizing oscillation operation, a base bias resistor _R1 , and a rectifying diode _D1 .

The DC power supply E ₀ has its positive terminal connected to the common ground line E ₁ through a parallel connection of the strobe power switch S ₁ and the charging switch S ₂ ,
Between the negative pole of the power supply E ₀ and the line E ₁ , a series circuit of a resistor R ₁ and a capacitor C ₁ and a tertiary coil are connected.
A series circuit of L ₃ and a parallel connection of transistors Q ₁ and Q ₂ is connected to each other. The transistors Q ₁ and Q ₂ are formed of PNP type transistors whose bases, collectors and emitters are connected to each other, and the collectors are connected to the tertiary coil L ₃ and the emitters are connected to the common ground line.
E ₁ , the base is the primary coil L ₁ and the secondary coil
Each is connected to the other end of _L2 . One end of the primary coil _L1 is connected to the connection point between the resistor _R1 and the capacitor _C1 , and one end of the secondary coil _L2 is connected to the anode of the diode _D1 .

The power supply circuit section configured in this way is
When S ₁ or S ₂ is closed, the transistor
An oscillation circuit consisting of Q ₁ , Q ₂ and the transformer L excites a high voltage boosted to the secondary coil L ₂ of the transformer L, and this high voltage is rectified by the rectifier diode D ₁ . It serves to supply the flash light emitting circuit section in the next stage.

The flashlight circuit section above is the main capacitor
C ₂ , neon lamp B for charging completion indication, trigger capacitor C ₃ , trigger transformer T
The main part thereof is composed of a flash discharge tube F and a flash discharge tube F. The main capacitor C ₂ is connected between the cathode of the diode D ₁ and the line E ₁ , and in parallel with the main capacitor C ₂ is a series circuit consisting of a resistor R ₂ and a neon lamp B for indicating charging completion. , a series circuit of a coil L ₀ , a flash discharge tube F, and a primary coil T ₁ of a trigger transformer T,
each connected. A series circuit of a resistor R ₃ and a capacitor C ₃ is connected between the connection point between the resistor R 2 and the neon lamp B and the connection point between the flash discharge tube F _and the primary coil T ₁ . . The secondary coil T ₂ of the transformer T has one end connected to the cathode of the flash discharge tube F, and the other end connected to the trigger electrode F _T of the flash discharge tube F. Furthermore, the connection point between the resistor _R3 and the capacitor _C3 is connected to the light emission timing selection switch _S3.
This switch is connected to the movable contact terminal of
One fixed terminal a of _S3 is connected to the common ground line E1 through the flash photography light emitting switch _S4 , and the other fixed terminal b is connected to the common ground line _E1 through the self timer operation display light emitting switch _S5 . Note that the fixed terminal a corresponds to the fixed contact piece pattern 71b ₁ , and the fixed terminal b corresponds to the fixed contact piece pattern _71b2 .

The flash light emitting circuit section configured in this manner controls the trigger capacitor _C3 by closing the flash photography light emitting switch _S4 or the self-timer operation display light emitting switch _S5 in response to switching of the flash timing selection switch _S3 . Both ends are short-circuited, and the current flowing through the primary coil T ₁ generates a high voltage in the secondary coil T ₂ , which is applied to the trigger electrode F _T and flashes due to the charge in the main capacitor C ₂ . It serves to start the flash light emission of the discharge tube F.

As described above, the self-timer operation display device of the present invention is configured.

Next, the operation of this self-timer operation display device will be explained separately for non-stroboscopic photography and strobe photography.

(1) In the case of non-stroboscopic photography (normal natural light photography) Since photography is performed with the flash unit 8 of the strobe device in the retracted position, as shown in Figure 6A.
As shown in , the strobe power switch _S1 is open, and the flash timing selection switch _S3 is connected to the fixed terminal b.
It has been switched over. In this state, when the self-timer is set by rotating the self-timer setting member 6 counterclockwise,
As shown in FIG. 4A, the movable contact piece member 51 takes the most rotated position in the counterclockwise direction, and at this time, the contact piece 51a is in a non-contact state with the fixed contact piece pattern 54a, and the contact piece 51b is fixed. It comes into contact with the contact piece pattern 54. Therefore, charging switch _S2 is in an open state.

When the self-timer start member 7 is operated clockwise to start the self-timer, the stopper member 37 rotates clockwise around the support shaft 44, and the pallet lever 36 moves the member 3
7 is lifted, the pallet wheel 36 and the escape wheel 35 cooperate with each other due to the stored elasticity of the mainspring spring 25 to start timing operation. As a result, the main drive shaft 24 begins to rotate slowly at a constant speed, the movable contact member 51 integrated with the shaft 24 rotates clockwise, and the contact member 51a is brought into contact with the fixed contact as shown in FIG. 4B. It comes into contact with the one-sided pattern 54a. That is, the charging switch _S2 is in a closed state. Therefore, the power supply circuit of the strobe device starts operating and charges the main capacitor _C2 with electric charge for flash discharge.

When the main drive shaft 24 further rotates clockwise and the movable contact member 51 moves back to the non-operating position of the self-timer set member 6, as shown in FIG. The pattern 54a is brought into a non-contact state again, and the charging switch _S2 is opened again. The main capacitor _C2 of the strobe device is charged to a voltage high enough to cause the flash discharge tube F to emit a flash while the charging switch _S2 is closed when the self-timer is activated.

On the other hand, at approximately the same time as the charging of the main capacitor C ₂ is completed, the actuating portion 23a of the shutter operating member 23 pushes and moves the actuated portion 22a due to the clockwise rotation of the main drive shaft 24. Rotate the lever 22 counterclockwise around the support shaft 39. As a result, the pushing portion 22b
, the pressed piece 21a is pushed down, and the shutter release member 21 starts operating the shutter. Then, the rotating disk 73 starts rotating counterclockwise from the position shown in FIG. 8A, and the shutter is fully opened as shown in FIG. 8B.
The pressing piece 74a is a light emitting switch S ₄ for flash photography.
close. However, since the light emitting time selection switch _S3 is now switched to the fixed terminal b connected to the self-timer operation display light emitting switch _S5 , both ends of the trigger capacitor _C3 are not shorted when switch _S4 is closed. , flash light emission from flash discharge tube F does not occur. Therefore, normal photography is performed using extraneous light.

After the rotary disk 73 rotates and closes the shutter, it rotates further and the shutter blade 75 becomes further narrowed down than the fully closed state when not photographing, as shown in FIG. 8C. The light-emitting switch _S5 for indicating the operation of the self-timer is closed by the piece 74b. Then,
Both ends of trigger capacitor C ₃ are connected to the switch.
A short circuit is made through S ₅ , S _{3 ,} etc., and the flash discharge tube F emits a flash. Therefore, the flash allows the person being photographed to know that the self-timer has completed its operation and the shutter has been turned off. The flash of the flash discharge tube F to indicate the operation of the self-timer occurs after the shutter is closed, so there is no risk of exposing the photographic film surface, and since it is very bright, it can be easily and reliably identified even in bright places. can do.

(2) In the case of strobe photography Since photography is performed with the flash unit 8 of the strobe device raised to the strobe photography position, the strobe power switch _S1 is closed as shown in Figure 6B. , Light emission timing selection switch S ₃
is switched to fixed terminal a. Therefore, when the pop-up button 9 is pressed to raise the flashlight emitting section 8, the power supply circuit section of the strobe device is activated and starts charging the main capacitor _C2 . Therefore, rotate the self-timer setting member 6 counterclockwise to set the self-timer, and then turn the self-timer start member 7.
When you operate the self-timer,
The contact piece 51a of the movable contact piece member 51 comes into contact with the fixed contact piece pattern 54a, and the charging switch _S2 is closed, but since the charging switch _S2 is connected in parallel with the strobe power switch _S1 , In this case, no effect is exerted on the self-timer operation display device.

On the other hand, by operating the self-timer start member 7, the main drive shaft 24 is rotated clockwise, and the shutter operating member 23 pushes down the shutter release member 21 via the push lever 22.
As a result, the shutter starts operating, and the rotary disk 73 rotates from the pre-photographing position shown in FIG. 8A to the fully open position of the shutter shown in FIG. Close the light emitting switch _S4 . Then, since the light emitting time selection switch S ₃ is now switched to the fixed terminal a connected to the switch S ₄ , both ends of the trigger capacitor C ₃ are connected to the switches S ₄ and S _3.
etc., and the flash discharge tube F emits flash light. Therefore, since the shutter is fully open, flash photography is performed. The person being photographed can know that the self-timer has been activated and the shutter has been turned off by the flash of the strobe device.

After this, as in the case described in (1), the self-timer operation display light-emitting switch _S4 is temporarily closed, but the light-emitting time selection switch _S3 is switched to the fixed terminal a. Therefore, the closing of switch _S4 has no effect on the self-timer operation indicator.

It goes without saying that the camera 1 provided with the self-timer operation display device described in the above embodiment functions normally even in normal photography without using the self-timer. That is, during non-strobe photography, the flash timing selection switch S ₃ is connected in series with the flash switch S ₅ for self-timer operation indication, but at this time the main capacitor C ₂
The flash discharge tube F does not emit flash light because it is not being charged. Further, during strobe photography, the flash discharge tube F emits a flash in the same manner as in the case (2) above.

As described above, according to the present invention, it is possible to provide a self-timer operation display device for a camera that is extremely convenient to use and eliminates the conventional drawbacks mentioned at the beginning of the specification.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a camera equipped with the self-timer operation display device of the present invention, and FIG. 2 is a perspective view of the camera shown in FIG. 1 with the flash unit of the strobe device raised. , FIG. 3 is an exploded perspective view of the self-timer mechanism disposed in the camera shown in FIG. 1 above, and FIGS. 4 A to C are interlocked with the self-timer mechanism shown in FIG. 5 is a perspective view of the pop-up mechanism of the flash unit of the strobe device installed in the camera shown in FIG. 1, and FIGS. Figure 5 is a diagram of the operation of the strobe power switch and flash timing selection switch that are linked to the pop-up mechanism shown in Figure 5, and Figure 7 is a perspective view of the shutter operating mechanism installed in the camera shown in Figure 1 above. , FIGS. 8A to 8C are operation diagrams of a flash photography light-emitting switch and a self-timer operation display light-emitting switch that are linked to the shutter operating mechanism shown in FIG. 7, and FIG. FIG. 2 is an electrical circuit diagram of a self-timer operation display device showing an embodiment. 1...Camera, 8...Flash light emitting unit of strobe device, 75...Shutter blade, S2...Charging switch, _S3 ...Flash timing selection switch, _{S4 ...} Flash light switch for flash photography, _S5 ... ...Light-emitting switch to indicate self-timer operation.

Claims (1)

[Scope of Claims] 1. A strobe device built into the camera body; a first charging switch that charges the flash light power source of the strobe device; 2nd to charge the power supply
a charging switch; a flash light switch for flash photography that causes the flash device to emit light when the shutter is fully opened; a light flash switch for self-timer operation display that causes the flash device to flash light in response to the closing operation of the shutter; A self-timer operation display device for a camera, comprising: a light emission timing selection switch that selectively switches whether the strobe device emits a flash using either a light emission switch or a light emission switch for self-timer operation indication. .