JPH086124A - Automatic winding camera provided with stroboscopic unit - Google Patents

Abstract

PURPOSE:To make a recovery value high and an automatic winding camera inexpensive by reusing the stroboscopic board recovered from the recovered film unit with a lens for the automatic winding camera. CONSTITUTION:The stroboscopic board 50 on which an electric flash light emitting xenon lamp tube 7, a trigger switch 10 detecting the opening/closing states of a shutter blade 36 and a stroboscopic circuit for letting the xenon lamp tube 7, emit electric flash light based on the trigger switch 10 are mounted is recovered from the film unit with the lens, the extended part of the recovered stroboscopic board 50 is cut off and simultaneously an exchange for a booster transformer having a half boosting rate is executed to reuse the recovered stroboscopic board 50 for the automatic winding camera.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic winding camera with a strobe unit, and more particularly to an automatic winding camera with a strobe unit having a strobe unit collected from a film unit with a lens.

[0002]

2. Description of the Related Art Conventionally, a film unit with a lens, which has been known as a single-use camera, is provided with a mechanism for simply winding up a film in order to provide it at a low cost, and is simply configured with a minimum number of parts necessary for photographing. Has been done. There are many variations of this lens-equipped film unit, and among them, "Sharp Run Flash" (trade name), which has a strobe function, is widely known.

As shown in FIG. 6, a main body 1 of the "quick-run flash" is provided with a finder 2 and a photographing lens 3, and a film storage chamber 4 and a cartridge chamber 5 are formed at the left and right ends of the main body 1, respectively. ing. An unexposed film is wound in advance in the film storage chamber 4, and a cartridge for winding the exposed film is arranged in the cartridge chamber 5.
A winding knob 6 is provided on the upper portion of the cartridge chamber 5, and the winding knob 6 winds the exposed film frame by frame.

A strobe substrate 8 is provided on the right end of the main body 1.
Is attached, and the strobe light emitting portion 7 is provided on the upper end portion of the strobe substrate 8. A main capacitor 9 is provided behind the strobe light emitting unit 7, and the main capacitor 9
Is charged with electric charges for causing the strobe light emitting section 7 to emit light. A trigger switch 10 is attached to the left end portion of the strobe board 8, and the spring terminal 1 of the trigger switch 10 is attached.
0A and 10B project above the taking lens 3. The trigger switch 10 is turned on when the spring terminals 10A and 10B come into contact with each other.

The projection 11 is supported so as to interlock with the opening / closing operation of a shutter blade (not shown), and moves downward to the position shown in FIG. 6 when the shutter blade is opened. Therefore, when the shutter blade is opened, the spring terminal 10A is pushed down by the protrusion 11, the spring terminals 10A and 10B come into contact with each other, and the trigger switch 10 is turned on. As a result, the opening of the shutter blade is detected. Further, electrode terminals 13 and 14 are provided at the lower end of the strobe substrate 8. Electrode terminal 1
4 is provided at the end of the extension portion 8A of the strobe substrate 8 as shown in FIG. The battery 1 is used for the electrode terminals 13 and 14.
2 is attached, and the battery 12 is electrically connected to the circuit of the strobe substrate 8 via the electrode terminals 13 and 14.

[0006] Then, in the case of stroboscopic photography with the "quick-run flash," a charge switch (not shown) is turned on.
Then, the main capacitor 9 is charged with a predetermined electric charge from the battery 12, and after charging is completed, the shutter button is pressed to photograph a desired subject. In this case, when the shutter button is pressed to open the shutter blade, the spring members 10A and 10B pressed down by the protrusion 11 come into contact with each other and the trigger switch 10 is pressed.
Turns on. As a result, the electric charge charged in the main capacitor 9 is discharged and the strobe light emitting section 7 emits light.
In FIG. 7, 9A is a step-up transformer, and the step-up transformer 9A boosts the voltage of the battery 12 to generate the main capacitor 9A.
Increase the charging voltage of.

[0007]

By the way, this type of lens-equipped film unit can be easily obtained at a general store like a photographic film unit, and can be developed in a DPE store as it is after completion of photographing. You can request.
Then, the components of the film unit with lens collected at the DPE store at the time of development are reused as the components of the film unit with lens newly produced. However, in order to increase the recovery value, it is desired to reuse the recovered products for products other than the lens-equipped film unit. In particular, among the recovered products, the strobe unit includes the strobe light emitting section 7, the main capacitor 9, etc., and these parts have a relatively long life and are highly valuable in terms of cost.

On the other hand, an ordinary camera capable of exchanging films (especially, a camera which automatically winds and rewinds a film by using a motor, which is referred to as an automatic winding camera) is relatively expensive, so that automatic winding is possible. There is a desire to buy cameras at low prices. The present invention has been made in view of the above circumstances, and it is possible to reuse a strobe unit collected from a collected film unit with a lens in an automatic winding camera to increase the collection value and to reduce the price of the automatic winding camera. It is an object of the present invention to provide an automatic winding camera with a strobe unit capable of performing.

[0009]

In order to achieve the above-mentioned object, the present invention provides an automatic winding camera with a strobe unit for automatically winding and rewinding a film by driving a motor, in which the film is collected from a film unit with a lens. And a strobe board on which a strobe light emitting section, a detection switch for detecting the open / closed state of the shutter blades, and a strobe circuit for causing the strobe light emitting section to emit light based on the detection switch are mounted. And the drive power source for the motor are the same power source.

[0010]

According to the present invention, the strobe board on which the strobe light emitting portion, the detection switch for detecting the open / closed state of the shutter blades, and the strobe circuit for causing the strobe light emitting portion to emit light based on the detection switch are mounted, is used as a lens. From the attached film unit. Then, the extension 8 of the strobe substrate 50 collected from the film unit with lens
A is cut and replaced with a step-up transformer 56 having a step-up ratio of 1/2, and reused for an automatic hoisting camera.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic winding camera with a strobe unit according to the present invention will be described below in detail with reference to the accompanying drawings. still,
1 to 4, the same members as those of the lens-equipped film unit shown in FIGS. 6 and 7 are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a perspective view showing a main part of an automatic hoisting camera with a strobe unit according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a circuit diagram of a strobe most used in the camera, and FIG. 4 is a shutter operation. 5A and 5B are schematic diagrams of the film feeding device of the camera. In the case 17 of the automatic winding camera 16 shown in FIG. 5, a cartridge 18 is housed at the left end and a winding spool 19 is supported at the right end. The take-up spool 19 has gears G ₁ and G _2.
And G ₃ are connected to the motor 20 so that the rotational force can be transmitted.

A sun gear G ₄ is meshed with the gear G ₂ , and a planet gear G ₅ is meshed with the sun gear G ₄ . When the sun gear G ₄ rotates in the clockwise direction, the planet gear G ₅ revolves in the clockwise direction (arrow A direction) while rotating in the counterclockwise direction. As a result, the planet gear G ₅ is changed to the gear G ₆
, The rotational force of the planetary gear G ₅ is changed to the gears G ₇ , G ₈ ,
It is transmitted to the cartridge shaft 22 via G ₉ , G ₁₀ and the rewinding fork 21. In this case, the film cartridge shaft 22 and the winding spool 19 are rotated clockwise to rewind the film 24 into the film cartridge 18.

On the other hand, when the sun gear G ₄ rotates counterclockwise, the planet gear G ₅ revolves in the counterclockwise direction (arrow B) while rotating in the clockwise direction. When the planet gear G ₅ revolves in the direction of the arrow B, the mesh between the planet gear G ₅ and the gear G ₆ is released, and the patrone shaft 22 becomes free.
The rotational force of the motor 20 is transmitted only to the winding spool 19 via the gears G ₁ and G ₂ . As a result, the winding spool 19 rotates counterclockwise, and the film 24 is wound on the winding spool 19 by one frame.

In FIG. 1, a main body 30 is housed in the case 17. On the left side of the main body 30 is a cartridge 18
A winding spool 19 (see FIG. 5) is rotatably supported on the right side of the main body 30 (see FIG. 5).
The body 30 is provided with a finder 32 and a taking lens 34. Further, as shown in FIG. 4, the main body 30 has a shutter housing 44, and the shutter blades 36 are rotatably supported on the shutter housing 44 about a pin 38. A lever 40 is formed on an upper end portion of the shutter blade 36, and an upper end portion of a spring 42 is locked to a pin 40A of the lever 40.

The lower end of the spring 42 is locked to the shutter housing 44 via a pin 44A. This allows
The shutter blades 36 are urged by a spring 42 counterclockwise about the pin 38. Pin 40A has opening groove 30A
(See FIG. 1) It is movably fitted into the partition plate 46, and the opening groove 30A is formed on a partition plate 46 so as to form an arc centered on the pin 38. Further, a pin 36A is formed at the upper end of the shutter blade 36, the pin 36A is movably fitted in the opening groove 30B (see FIG. 1), and the opening groove 30B is formed in an arc centered on the pin 38. It is formed on the partition plate 46.

Therefore, when the shutter blade 36 rotates about the pin 38, the pin 36A and the pin 40A move in the opening groove 30B and the opening groove 30A, respectively. And
When the pin 36A comes into contact with the upper end of the opening groove 30B,
The shutter blade 36 is held at the position shown in FIG. 4, and the photographing lens 34 is closed. Further, a projection 36B is formed on the upper end portion of the shutter blade 36 so as to come into contact with a drive portion 46 of a drive lever (not shown).

When a shutter button (not shown) is depressed, the drive lever moves to the shutter release position, and the drive portion 46 kicks the projection 36B. As a result, the shutter blade 36 rotates clockwise against the urging force of the spring 42, and the photographing lens 34 is opened. In this way, when the shutter blade 36 rotates clockwise, the pin 36A moves downward along the opening groove 30B.

A strobe unit 4 is provided at the right end of the main body 30.
8 are provided. The strobe unit 48 includes a strobe board 50, and a hole 50 is formed at the left end of the strobe board 50.
A is formed. Positioning pin 30C in hole 50A
And the positioning pin 30C is formed on the main body 30. Further, a holding claw 30D is formed on the main body 30,
The holding claw 30D is locked to the upper edge of the strobe board 50.
As a result, the strobe unit 48 is held at the right end portion (see FIG. 2) of the main body 30.

In this state, the spring terminals 10A and 10B of the trigger switch 10 project below the pin 36A of the shutter blade 36. Therefore, when the shutter blade 36 rotates in the clockwise direction and the pin 36A moves downward along the opening groove 30B, the pin 36A pushes down the spring terminal 10A of the trigger switch 10, and the spring terminals 10A and 10B.
Contact each other and the trigger switch 10 is turned on. Further, on the strobe substrate 50, electrode pads P ₁ and P ₁ of the charge switch 55 are formed. When the charge button 55A is pressed, the charge switches 55 are turned on by energizing the electrode pads P ₁ and P ₁ .

Next, referring to FIG. 3, the strobe unit 48 is shown.
The strobe circuit 51 will be described. The strobe unit 48 has a strobe substrate 50, and the strobe substrate 50 is obtained by cutting the extension 8A of the strobe substrate 8 of the lens-equipped film unit shown in FIGS. Therefore,
Only one battery electrode terminal 13 remains on the flash substrate 50. In the strobe circuit 51 of the strobe board 50, a battery 54 and a charge switch 55 are connected to a blocking oscillation type booster circuit 52. Since the battery 54 is also used as a drive power source for the motor 20 shown in FIG. 5, the battery 54 has three times the voltage (1.5 V) of the lens-equipped film unit shown in FIG.
A voltage of V is required.

The step-up circuit 52 has a step-up transformer 56, a transistor 58, and a diode 60, and the turn ratio between the primary winding P and the secondary winding S of the step-up transformer 56 is set to 1: 120. In this case, since the battery 54 is set to twice the voltage of the lens-equipped film unit in FIG. 6, the winding ratio of the step-up transformer of the lens-equipped film unit is 1: 2.
With respect to 40, the turn ratio of the step-up transformer 56 is 1: 120.
Set to.

As a result, the charge switch 55 is turned on.
Then the main capacitor 9 and the trigger capacitor 6
2 can be charged with the same charge as in the case of the film unit with a lens. Transistor 58 forms an oscillator and redirects battery 54 current to alternating current. In addition, the diode 60 rectifies the current boosted by the boosting transformer 56 and converts it into direct current again.

As a result, the trigger capacitor 62 is charged via the charging resistor 64, and the main capacitor 9 is also charged.
Is the charging time of the trigger capacitor 62 and the charging resistor 6
A value that is equal to the time constant determined by 4 is used. Further, the strobe circuit 51 is provided with a neon tube 66 in series with the resistor 68, and the neon tube 66 lights up when the charging of the trigger capacitor 62 is completed.

When the trigger switch 10 is turned on in conjunction with the opening operation of the shutter blade 36, the electric charge of the trigger capacitor 62 is rapidly discharged, and the trigger transformer 70 is discharged.
A high voltage is applied to the grid 74 of the xenon lamp tube 7 via. As a result, the gas in the xenon lamp tube 7 is excited, the resistance of the xenon lamp tube 7 decreases, the main discharge of the electric charge of the main capacitor 9 starts, and the xenon lamp tube 7 instantaneously emits a strong flash. . In FIG. 3, F is a feedback winding.

The operation of the automatic winding camera with a strobe unit constructed as described above will be described. Collection of Film Unit with Lens When taking a picture with an automatic winding camera with a strobe unit, a charge switch 55 (not shown) is turned on to charge the main capacitor 9 and the trigger capacitor 62 with predetermined charges from the battery 54. When the charging of the trigger capacitor 62 is completed, the neon tube 66 lights up. Next, the shutter button is pressed to photograph the desired subject.

When the shutter button is pushed down, the drive lever moves to the shutter release position and the drive unit 4
Kick the protrusion 36B with 6. As a result, the shutter blade 36 rotates clockwise against the urging force of the spring 42 to open the photographing lens 34, and at the same time, the pin 36A moves downward along the opening groove 30B to move the trigger switch 10 to the bottom.
Push down the spring terminal 10A. As a result, the spring terminals 10A and 10B come into contact with each other and the trigger switch 10 is turned on.

When the trigger switch 10 is turned on, the electric charge of the trigger capacitor 62 is rapidly discharged, and a high voltage is applied to the grid 74 of the xenon lamp tube 7 via the trigger transformer 70. This allows the xenon lamp tube 7
The gas inside is excited, the resistance of the xenon lamp tube 7 decreases, the main discharge of the electric charge of the main capacitor 9 starts, and the xenon lamp tube 7 instantaneously emits a strong flash.

As described above, the extension portion 8A of the strobe board 8 of the lens-equipped film unit shown in FIG. 6 is cut, and the step-up transformer 56 is replaced with a winding ratio of 1: 120. Can be reused as

[0029]

As described above, according to the automatic winding camera with the strobe unit according to the present invention, the strobe light emitting portion, the detection switch for detecting the open / closed state of the shutter blade, and the strobe light emitting portion emitting light based on the detection switch. The strobe board on which the strobe circuit for performing the strobe is mounted is collected from the lens-equipped film unit. Then, the extension portion 8A of the strobe substrate 50 collected from the film unit with lens is cut, and the step-up ratio is set to 1
Replace with a step-up transformer 56 that becomes / 2 and reuse it for an automatic winding camera.

As a result, the strobe substrate recovered from the recovered lens-fitted film unit can be reused for the automatic winding camera to enhance the recovery value and reduce the price of the automatic winding camera.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of an automatic winding camera with a strobe unit according to the present invention.

FIG. 2 is a front view showing a main part of an automatic winding camera with a strobe unit according to the present invention.

FIG. 3 is a circuit diagram of a strobe most used in an automatic winding camera with a strobe unit according to the present invention.

FIG. 4 is an explanatory view for explaining the operation of the shutter of the automatic winding camera with a strobe unit according to the present invention.

FIG. 5 is an explanatory diagram for explaining the operation of the film feeding control device.

FIG. 6 is a front view of a film unit with a lens.

FIG. 7 is a rear view of a strobe board of a film unit with a lens.

[Explanation of symbols]

 7 ... Xenon lamp tube (strobe light emitting part) 8A ... Extension part 10 ... Trigger switch (detection switch) 16 ... Automatic winding camera with strobe unit 20 ... Motor 36 ... Shutter blade 50 ... Strobe board 51 ... Strobe circuit 56 ... Step-up transformer

Claims (4)

[Claims] 1. An automatic winding camera with a strobe unit that automatically winds and rewinds a film by driving a motor, and a detection switch for detecting the open / closed state of a strobe light emitting unit and shutter blades, which is collected from a film unit with a lens. And a strobe board on which a strobe circuit for causing the strobe light emitting section to emit light based on the detection switch is mounted, and the light emission power source of the strobe light emission section and the drive power source of the motor are the same power source. Automatic winding camera with strobe unit. 2. The self-winding camera with a strobe unit according to claim 1, wherein the strobe board is formed by cutting an extension portion on which a battery electrode plate is mounted and reusing it. 3. The step-up transformer of the strobe circuit according to claim 1, wherein the step-up transformer of the strobe circuit is replaced with a step-up transformer having a step-up ratio of 1/2 of that of the step-up transformer of the film unit with a lens. Automatic winding camera. 4. The self-winding camera with a strobe unit according to claim 1, wherein the strobe circuit is electrically connected to a drive power source of the motor.