JPS638893Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a photographic device comprising a camera and a strobe device detachably attached to the camera. Conventionally, in the above-mentioned photographic device, simply attaching the strobe device to the strobe mounting shoe fixed to a fixed location on the outer wall of the camera,
They were preparing to emit light or performing various operations such as emitting light.

However, when simply attaching a strobe device to a camera, the positional relationship between the camera and the strobe device remains unchanged, and unless a special means such as an indicator light is used, there is no need to prepare for flashing or start firing. It is difficult to judge from the outside whether the shutter is ready for operation, and even if an indicator light were provided, there was an extremely high risk of the shutter being released at an inappropriate time.

This invention allows the mounting legs of the strobe device to be slidably attached to the strobe device, so that when the strobe device is attached to the camera, it can be set to the "strobe mounting position" where the strobe is not used, and the strobe usage position. The strobe light can be moved to two positions, the strobe operating position, and by changing the position, it can be clearly and easily seen from the outside whether or not the strobe is capable of emitting light. By providing a strobe light control switch in this strobe device that enables the strobe device to fire only when it is in the “strobe operation position,” it is possible to prevent the shutter from being released at the wrong time. It is an object of the present invention to provide a photographic device that completely eliminates the defects of the conventional devices by preventing the strobe device from emitting light.

Hereinafter, the present invention will be specifically explained based on illustrated embodiments.

1 and 2, the strobe device 3 is attached to the camera 1 by fitting the mounting leg 4 of the strobe device 3 into the strobe mounting shoe 2 fixed to the right outer wall of the camera 1. An example of lateral connection is shown.

The mounting legs 4 of the strobe device 3 are provided so as to be able to slide up and down with respect to the strobe device 3. The "strobe operating position" 3B shown in FIG. By doing this, it is extremely easy and clear to see from the outside whether the strobe device 3 is in an operable state. In this case, if the height of the strobe device 3 is set to be approximately the same as that of the camera 1, the "mounting position" 3A is set.
Even if the camera 1 is carried with the strobe device 3 attached, there are no unevenness between the two, making it very easy to carry.

The above camera 1 has a well-known configuration,
On the front, there is a photographic lens 5 and a viewfinder window 6.
Also, on the upper left side, there is a film winding knob 7a and a shutter release button 8.
However, on the upper right side, there is a film rewind knob 7.
b are provided respectively. On the other hand, the strobe device 3 is also of a well-known configuration, with a light emitting window 9 on the front, a discharge luminous tube 10 inside the window 9, and a reflector 11 on the back. It is provided.

Next, a partial structure of the mounting leg 4 of the strobe device 3 and the strobe mounting shoe 2 of the camera 1 will be described with reference to FIGS. 3 and 4.

In FIG. 3, a leg portion 13 is fixed to an outer wall 12 of the camera 1 and protrudes from the bottom portion 2a of the strobe mounting shoe 2. As shown in FIG. The leg portion 13 has an insulating tube 1
A conductive rod 15 is inserted through the shoe 2, and its right end portion is connected to the contact end 15 on the outer surface of the shoe 2.
a, and its left end portion protrudes inward of the camera 1 to form a connection end 15b. This connecting end 15b is connected by a conductor 16a to a fixed terminal 17a of a synchro switch 17, which is closed by the shutter release. The movable contact piece 17b of the synchro switch 17 is connected to the conductor 16.
By b, the leg 13 of the strobe mounting shoe 2
It is connected to the.

On the other hand, the outer wall 18 of the strobe device 3 is vertically bored with a long hole 18a as a guide part, and the mounting leg 4 is attached to the flanges 19a, 19.
It is slidably pivoted in this long hole 18a so as to sandwich the outer wall 18 at points b. A piston-shaped connector 20 is slidably fitted inside the mounting leg 4, and a contact end 20a is formed at the left end of the connector 20, and the conductive rod 15 It is adapted to come into contact with the contact end 15a of. Further, a flange portion 20b is provided at the right end portion, and a storage chamber 1 provided inside the mounting leg 4.
This flange 20b is pressed leftward by a spring 21 interposed within 9c.
Therefore, the connector 20 is given a habit of causing its abutting end 20a to abut against the contacting end 15a. A contact 23 to which a spring 21 is electrically connected via a conductor 22 is fixed to the right end of the mounting leg 4 . This contact 23 is located on the outer wall 18.
The strobe light emission control switch 2 is connected to the strobe light emission control switch 2 along with a contacted piece 25 made of an elastic contact piece supported by an insulating stationary body 24 protruding from a portion below the mounting leg 4.
6.

A detection rod 27 as a switch opening/closing member for detecting that the strobe device 3 is attached to the camera 1 is slidably fitted in the upper part of the outer wall 18, and a power switch is mounted on the right end 27a of the detection rod 27. 2
The free ends of the elastic contact pieces 28a of No. 8 are loosely fitted. The power switch 28 is composed of an elastic contact piece 28a and a fixed contact piece 28b, and both contact pieces 28
The bases of a and 28b are supported by an insulating stationary body 29 protruding from the outer wall 18. Detection rod 27
Due to the elasticity of the elastic contact piece 28a, the detection part 27b provided at the left end portion of the elastic contact piece 28a is moved to the outer wall 12 of the camera 1.
It is given the habit of changing the direction in which it comes into contact with the object.

Each of the switches 17, 26 and 28 is incorporated into a strobe circuit 30 as shown in FIG. In FIG. 5, a power supply 31 includes a main capacitor 32, a trigger capacitor 33, a series circuit of voltage dividing resistors 34 and 35, and the discharge luminous tube 10, which are connected in parallel to each other.
It is connected via a power switch 28. A trigger transformer 36 and the strobe light emission control switch 26 are connected to both ends of the trigger capacitor 33.
A series circuit with the synchro switch 17 is connected to the trigger transformer 36, and a trigger electrode 37 of the discharge luminous tube 10 is connected to the secondary side of the trigger transformer 36. The trigger capacitor 33, trigger transformer 36, discharge luminous tube 10, etc. constitute a light emitting circuit in the present device.

Next, the operation of the present device shown in FIGS. 3 to 5 will be explained.

First, on the strobe mounting screen 2 of camera 1,
The slidable mounting legs 4 of the strobe device 3 are fitted so as to place the strobe device 3 in the "strobe mounting position" 3A (see FIG. 1). When the strobe device 3 is attached to the camera 1 in this way, the detection part 27b of the detection rod 27 is connected to the outer wall 12 of the camera 1.
, the detection rod 27 is pushed into the outer wall 18 of the strobe device 3, and as a result, the power switch 28 is closed. Further, the contact end 20a of the connector 20 of the strobe device 3 contacts the contact end 15a of the conductive rod 15 in the shoe 2, and the conductive rod 15
is electrically connected to the contact 23 via the connector 20, the spring 21, and the conductor 22. In addition, the movable contact piece 17 of the trigger switch 17
b is a conductor 38 buried in the conductor 16b, the strobe mounting shoe 2, and the mounting leg 4;
(see FIG. 3) and is electrically connected to a trigger transformer 36 (see FIG. 5) by a line 39.

When the strobe device 3 is attached to the camera 1 in this way, the charging circuit of both capacitors 32 and 33 is closed by closing the power switch 28, and charging starts at this "strobe mounting position" 3A. However, in this state, since the strobe light emission control switch 26 is open, the discharge luminous tube 10 does not operate even if the shutter release is performed.

The strobe device 3 attached to the camera 1 at the "strobe mounting position" 3A is then slid on the mounting leg 4 toward the "strobe operating position" 3B (see FIG. 2). When the strobe device 3 reaches the "strobe operating position" 3B, the click stop protrusion 18b (see FIG. 3) provided at the bottom of the outer wall 18 engages in the recess 4a provided in the flange 19a of the mounting leg 4. As shown in Figure 4,
This strobe device 3 is locked at this position. Then, the contact 23 of the mounting leg 4 comes into sliding contact with the contacted piece 25, the strobe light emission control switch 26 is closed, and the light emission circuit of the strobe device 3 is placed in an operable state. Note that the power switch 28 is in the front position 3.
Continuing from A, it is kept closed.

When the shutter release button 8 (see Figure 2) is pressed in this state, the synchro switch 17 is closed, the trigger capacitor 33 is discharged, the trigger transformer 36 is activated, and a high voltage is applied to the trigger electrode 37. , thereby the discharge arc tube 10
conducts, the main capacitor 32 discharges, and the discharge luminous tube 10 emits light.

In addition, in the present invention, a mounting leg 4 is provided for slidingly displacing the strobe device 3 with respect to the camera 1.
The mounting method, the configuration of each switch, and the connection method to the strobe circuit can be arbitrarily changed by known means.

In addition, the present invention has a strobe device 3 mounted on the side of the camera 1 as shown in FIGS. 1 and 2, and a strobe device 3 mounted on the top of the camera 1 as shown in FIGS. This can also be fully applied when installing the device 3'.

FIG. 6 shows a state in which a slidable mounting leg 4' of a strobe device 3' is attached to a strobe mounting shoe 2 fixed to the upper part of the camera 1. The position of the strobe device 3 in this case is
At the "strobe mounting position"3'A, the shutter release button 8 is covered by the strobe device 3' so that it cannot be pushed in.

When the strobe device 3' is now slid on the mounting leg 4' and placed in the "strobe operating position"3'B as shown in FIG. 7, it becomes possible to emit strobe light. When the synchro switch 17 is closed at this position 3'B, strobe light is emitted, as in the previous embodiment. In addition,
In this case, the mechanical and electrical coupling means between the strobe device 3' and the mounting leg 4' are almost the same as those shown in FIGS. 3 and 5.

As mentioned above, according to the present invention, the strobe device itself can be moved to change the strobe mounting position.
Since the "strobe operating position" and "strobe operating position" can be easily distinguished, it is possible to completely avoid unforeseen accidents such as accidentally releasing the shutter at the wrong time and failing to shoot with the flash. be able to.

Furthermore, according to the present invention, when the strobe device is moved toward the "strobe operating position," it is moved away from the photographic lens, thereby preventing the so-called red-eye phenomenon from occurring. There are also advantages to being able to do so.

[Brief explanation of drawings]

1 and 2 show an example of application of the present invention,
A front view of a camera and a strobe device, FIGS. 3 and 4 are partial cross-sectional views of a camera strobe device showing an embodiment of the present invention, and FIG. 5 is an example of a strobe circuit to which the present invention is applied. 6 and 7 are front views of a camera and a strobe device, showing other application examples of the present invention. 1...Camera, 2...Strobe installation shoe,
3, 3'... Strobe device, 4, 4'... Mounting legs, 3A, 3'A... "Strobe mounting position" 3
B, 3'B... "Strobe operating position".

Claims (1)

[Claims for Utility Model Registration] The strobe can be attached and detached from the camera by the mounting parts 2 and 4, which are made up of a strobe mounting shoe 2 provided on the wall of the camera body 1 and mounting legs 4 provided on the wall of the strobe 3. In the photographic device, the mounting leg is provided with a guide portion 18a that slidably holds the mounting leg 4 along the outer wall of the strobe between the strobe operating position 3B and the strobe mounting position 3A; a strobe light emission control switch 26 having a contactor 23 and a contacted piece 25 disposed adjacent to the guide portion, the strobe light emission control switch 26 being brought into a closed state by abutting upon movement to the strobe operating position; A detection member 2 is provided on the outer wall of the strobe and is pressed against the camera outer wall during the mounting operation to the camera to close a power switch 28 in the strobe.
7. A photographic device characterized by comprising the following.