JPH0430859Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a portable video camera, and particularly to a structure for attaching a view finder to a camera body.

[Summary of the idea]

This invention is the first portable video camera with a viewfinder attached to the camera body.
Using a substantially L-shaped arm consisting of an arm part and a second arm part, the arm is arranged so that the first arm part can freely rotate in the horizontal direction and the second arm part can freely rotate in the vertical direction. is supported by the camera body,
By supporting the viewfinder on the second arm so that it can rotate freely in the vertical direction, the horizontal position, vertical position, and inclination angle of the viewfinder relative to the camera body can be adjusted according to various shooting conditions. can be adjusted freely.

[Conventional technology]

First, a conventional portable video camera will be explained with reference to FIG.

This portable video camera (hereinafter simply referred to as camera) 1 has a lens 3 attached to the front part 2a of a camera body 2, a battery case 4 etc. attached to the rear part 2b, and a handle 5 attached to the upper part 2c. A view finder 6 is attached to one side 2d of the camera body 2. This view finder 6 is arranged around one side of the camera body 2 around a horizontal rotation axis 7 near its front end.
It is supported rotatably in the vertical direction (direction of arrows a and a') along d, and is configured to be tilt adjustable so that its finder portion 6a faces up and down at an angle of about 45 degrees.

When using this camera 1, the camera body 2 is generally placed on the photographer's shoulder, and the inclination angle of the viewfinder 6 is adjusted in accordance with the position of the photographer's eyes. Even when the camera 1 is tilted upward or downward to photograph an elevation angle shot or a depression angle shot, the inclination angle of the viewfinder 6 is adjusted appropriately.

[Problem that the invention attempts to solve]

By the way, in recent years, taking advantage of the mobility of the portable video camera 1, this camera 1 has been increasingly used for filming movies, etc., but in this type of filming, the film director himself has traditionally been able to select the shot that the cameraman is aiming for. It is often done to check the viewfinder 6 by looking at it. However, in this case, in the conventional camera 1, the position of the viewfinder 6 is limited to one side 2d of the camera body 2, so when the camera body 2 is mounted on a tripod or the like, the director must move the camera body 2 each time. When the camera body 2 is placed on the photographer's shoulder, the camera body 2
must be placed on the shoulders of the director each time. Therefore, even if an attempt is made to take advantage of the mobility of the camera 1, it is very troublesome during actual photographing.

In addition, the conventional camera 1 has a viewfinder 6.
The adjustment range of the tilt angle of the camera body 2 is insufficient, especially when the photographer holds the handle 5 of the camera body 2.
When photographing at a low angle by suspending the camera at a low position, the angle of inclination of the viewfinder 6 is insufficient, resulting in less freedom in the photographing angle. Furthermore, if the camera body 2 is mounted on a tripod or the like, even if you try to look into the viewfinder 6 from the rear of the camera body 2, the viewfinder section 6
There was also a problem that a was too far away from the eye position.

Therefore, the present invention allows the horizontal position, vertical position, and inclination angle of the viewfinder relative to the camera body to be freely adjusted.

[Means for solving problems]

The present invention includes a camera body, a viewfinder, and a first arm portion and a second arm portion for connecting these.
the first arm is supported by the camera body so as to be rotatable in the horizontal direction about a vertical axis of rotation; The arm part is configured to be freely rotatable in the vertical direction about the horizontal axis of the first arm part, and the view finder is supported by the second arm part so as to be freely rotatable in the vertical direction about the horizontal axis of rotation. This is what I did.

[Effect]

According to the present invention, the horizontal position of the viewfinder relative to the camera body can be freely adjusted by rotating the first arm in the horizontal direction. It is possible to peek from. Furthermore, by vertically rotating the second arm, the vertical position of the viewfinder relative to the camera body can be freely adjusted. Furthermore, by rotating the viewfinder in the vertical direction, the inclination angle of the viewfinder can be freely adjusted. Therefore, the degree of freedom of photographing angles can be greatly improved according to various photographing conditions.

〔Example〕

An embodiment of the portable video camera according to the present invention will be described below with reference to FIGS. 1 to 6B.

First, as shown in FIGS. 1 and 2, this portable video camera (hereinafter simply referred to as camera) 11 has a lens 13 attached to the front part 12a of the camera body 12, and a battery case 1 to the rear part 12b.
A handle 15 is attached to the upper part 12c. Reference numeral 17 denotes a view finder, and this view finder 17 is attached to the camera body 12 by an arm 20 so that its horizontal position, vertical position, and inclination angle with respect to the camera body 12 can be freely adjusted.

That is, as shown in FIGS. 1 to 3, the arm 2
0 is the first arm part 21 and this first arm part 21
The second arm portion 22 is connected to one end portion 21a at a substantially right angle, forming a substantially L-shape. Note that the first arm portion 21 and the second arm portion 22 may be formed integrally. Further, the first arm section 21 and the second arm section 22 are formed in the shape of a hollow pipe, and a cable 24 for signal connection between the camera body 12 and the viewfinder 17 is inserted into the inside thereof.

The rotation shaft 2 is attached to a protruding piece 26 horizontally protruding from the front corner of the upper part 12c of the camera body 12.
7 is provided vertically, and the other end portion 21b of the first arm portion 21 is loosely fitted horizontally into a holder 28 provided at the bottom of this rotating shaft 27. As a result, the first arm portion 21 is supported so as to be rotatable in the horizontal direction (arrow b, b' direction) about the rotating shaft 27, and the first arm portion 21 is rotated around the horizontal axis P. It is configured to be rotatable around the center.
As the first arm part 21 rotates about the axis P, the second arm part 22 is configured to be freely rotatable in the vertical direction (in the direction of arrows c and c').

Next, a locking means 30 is provided above the front portion 12a of the camera body 12. This locking means 30 consists of a fixed holder 31 fixed to the camera body 12, and a movable holder 33 rotatably supported by the fixed holder 31 by a shaft 32.
Engagement grooves 34 and 35 each having a substantially U-shape are formed. The movable holder 33 is configured to be tightened to the fixed holder 31 by a tightening screw 36. A locking means 37 is provided in front of the other side 12e of the camera body 12, and this locking means 37 locks the locking means 30.
It is configured in the same way (the same reference numerals are given).

Then, as shown in FIG.
horizontally in the direction of arrow b, and the first arm portion 21 is secured to both holders 31 and 33 of the locking means 30.
The first arm portion 2 is inserted between the engaging grooves 34 and 35 of the
1 is configured to be locked in its pivoted position. In addition, as shown in FIG.
1 is horizontally rotated in the direction of arrow b', its first arm portion 21 is locked by the locking means 37. The rotation of the first arm portion 21 about the axis P, that is, the second arm portion 22, can be stopped at any rotational position by the frictional resistance caused by the strength of tightening the tightening screw 36. It can also be completely locked.

Next, the vertical rotation of the second arm section 22 accompanying the rotation of the first arm section 21 is regulated by the stopper mechanism 40 . That is, as shown in FIGS. 1 to 4B, a stopper ring 41 is placed on the outer periphery of the first arm section 21 at approximately the center thereof to form a double structure. The protrusion 42 is inserted into a groove 43 provided along the circumferential direction of the stopper ring 41, and the first arm 21 and the stopper ring 41 are configured to be relatively rotatable within a predetermined range. and groove 43
A stopper protrusion 44 is provided on the outer periphery of the stopper ring 41 at a position opposite from It is configured to abut against the portion 45 from above or below.

Next, as shown in FIGS. 1 to 3, a horizontal rotation shaft 48 is provided at the tip 22a of the second arm portion 22, and the viewfinder 17 is rotated vertically ( It is rotatably supported in the directions of arrows d and d'. That is, as shown in FIG. 3, a rectangular attachment part 49 formed at the center outer circumference of the viewfinder 17 is inserted into the rotating shaft 48, and a spacer 51 and a parting part are attached to the threaded part 50 formed on the rotating shaft 48. A nut 53 is tightened via a screw 52. And farewell 5
The viewfinder 17 is configured to be stopped at any rotational position due to the frictional resistance caused by 2.

Next, vertical rotation of the viewfinder 17 is restricted by a stopper mechanism 55. That is, as shown in FIGS. 1, 3, 5A, and 5B, the mounting portion 49 of the viewfinder 17
A stopper lever 56 is vertically rotatably supported by a horizontal shaft 57, and a horizontal stopper pin 58 provided at the tip of the stopper lever 56 comes into contact with a stepped portion 49a of the mounting portion 49. is configured to be Also stopupapin 5
8 also protrudes horizontally toward the second arm portion 22 side, and both side edges 22b, 22 of the second arm portion 22
c.

According to the camera 11 configured as described above,
As shown in FIG.
7 horizontally in the direction of arrow b, the viewfinder 17 is placed on the side 12d of the camera body 12 in a normal use state. Then, as shown in FIG. 2, the first arm portion 21
When rotated horizontally in the direction of arrow b' about the rotation axis 27, the view finder 17 is placed in front of the camera body 12 and perpendicular to the camera body 12, and the view finder 17 of the view finder 17 is rotated horizontally in the direction of arrow b'. It becomes possible to look into the camera from a direction perpendicular to the camera body 12. Note that the first arm portion 21 is fixed in both of the above positions by locking means 30 and 37, respectively.
7 may be constructed with a screw shaft, and the first arm portion 21 may be fixed in the middle between both positions.

Next, in the state shown in FIG. 1 or FIG. It is moved in a large circular trajectory with the radius of the length of the two-arm portion 22, and the vertical position of the view finder 17 can be adjusted up and down. View view finder 1 here
Since the movement of 7 is a circular trajectory, the view finder 17 can select two positions, front and rear, at the same vertical position.

By the way, in this embodiment, the first arm portion 2
Since the cable 24 is inserted inside the first and second arm parts 22, the cable 24 does not interfere with the rotation of the arm 20, and has the advantage that it is not easily affected by external radio waves. however,
When the cable 24 is inserted into the rotating arm 20, if the arm 20 is rotated without limit, the cable 24 may be twisted and broken.
It is necessary to provide a stopper to restrict rotation. Here, using a simple stopper, the arm 20 can be moved 360°.
Arm 2 cannot be rotated at an angle greater than
This results in an unrotatable range of 0.

However, in this embodiment, as shown in FIG. 4A, when the second arm section 22 is rotated in the direction of the arrow c, the first arm section 21 that is rotated integrally with the second arm section 22 is rotated in the direction of the arrow c. The protrusion 42 is moved within the groove 43 of the stopper ring 41, and the protrusion 42 is brought into contact with one end 43a of the groove 43. Then, the protrusion 42
, one end 43a of the groove 43 is pressed, and the stopper ring 41 is also rotated in the direction of arrow c. Then, the stopper protrusion 44 of the stopper ring 41 abuts the protrusion 45 of the camera body 12 from above, thereby stopping the rotation of the second arm portion 22 in the direction of arrow c. On the other hand, as shown in Figure 4B, the second
When the arm portion 22 is rotated in the direction of arrow c',
The protrusion 42 of the first arm portion 21 is connected to the stopper ring 4
1, the stopper protrusion 44 of the stopper ring 41 is rotated until it abuts the protrusion 45 of the camera body 12 from below, and at this point, the arrow c of the second arm part 22 Rotation in the ' direction is stopped. Therefore, the non-rotatable range θ ₁ of the stopper ring 41 is absorbed by the relative rotation range θ ₂ of the first arm portion 21 with respect to the stopper ring 41, and as a result, the second arm portion 22 has a large rotation range of 360° or more. It becomes possible to rotate over an angle, and the second
The range in which the arm portion 22 cannot rotate can be eliminated. Since the stopper mechanism 40 is configured as a rotating stopper mechanism in this way, the stopper mechanism 40
This makes it possible to rotate the second arm portion 22 by more than 360 degrees while preventing the cable 24 from twisting.

Next, as shown in FIG. 1 or 2, the arm 20
When the view finder 17 is rotated vertically in the directions of arrows d and d' about the rotating shaft 48 while the view finder 1 is freely rotated, the view finder 1
The inclination angle of 7 can be freely adjusted.

By the way, when the view finder 17 is rotated in the direction of the arrow d as shown in FIG. 5A, the stopper lever 56 is configured to be rotatable.
The viewfinder 17 is rotated until the stopper pin 58 of the stopper lever 56 is sandwiched between the stepped portion 49a of the mounting portion 49 and one side edge 22b of the second arm portion 22. On the other hand, when the view finder 17 is rotated in the direction of arrow d' as shown in FIG. The view finder 17 is rotated until it is turned. Therefore, the rotation range θ ₃ of the stopper lever 56 with respect to the viewfinder 17 allows the stopper pin 58 to be moved toward the viewfinder 17.
As a result, the viewfinder 17 can rotate over a large angle of 360° or more (approximately 400° in this case), similarly to the second arm portion 22 described above. , the range in which the viewfinder 17 cannot be rotated can be eliminated. In this way, since the stopper mechanism 55 of the view finder 17 is constituted by a rotating stopper mechanism, twisting of the cable 24 due to the rotation of the view finder 17 can be prevented.
The viewfinder 17 can be rotated more than 360°.

Next, FIGS. 6A and 6B show the case where the second arm section 22 and the view finder 17 are rotated according to various photographing conditions.
The solid line state in FIG. 6A is when the camera body 12 is mounted on a tripod or the like and the view finder 17 is looked into from the rear of the camera body 12. By making the viewfinder portion 17a substantially in line with the second arm portion 22, the viewfinder portion 17a can be brought close to the eye position. Also, the one-dot chain line state is when shooting at a low angle, and the second
By rotating the arm portion 22 downward and directing the viewfinder portion 17a upward, the viewfinder portion 17a can be viewed from above the camera body 12. Furthermore, FIG. 6B shows the second arm portion 22.
This is a case where the viewfinder 17 is set horizontally at each position by rotating the viewfinder 17 in the vertical direction, and even if the vertical position of the viewfinder 17 varies, the optical axis of the viewfinder 17 and the lens 13 are always aligned. By making the optical axis parallel to the
It is possible to prevent these optical axis deviations (parallax), and eliminate discomfort during photographing.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various effective changes can be made based on the technical idea of the present invention.

For example, in the embodiment, the first arm part is configured to be able to freely rotate in the horizontal direction within an angle range of 0 to 90 degrees, but by further rotating the first arm part at an angle of 90 degrees or more, the view finder can be attached to the other side of the camera body. It is also possible to position the

[Effect of idea]

This invention allows you to freely adjust the horizontal position, vertical position, and inclination angle of the viewfinder relative to the camera body, eliminating restrictions on shooting angles and increasing the degree of freedom in accordance with various shooting conditions. can be significantly improved. Therefore, when using this camera to shoot a movie, etc., by positioning the viewfinder perpendicular to the camera body, the movie director himself can see the shot the cameraman is aiming at from the side of the camera body. Since the director can check the view through the viewfinder, there is no need for the director to move around or carry the camera on his shoulder, which is extremely convenient.

In addition, the vertical position and tilt angle of the viewfinder can be adjusted freely, so even when shooting at a low angle by hanging the camera in a low position, the viewfinder can be adjusted to suit any shooting situation. be able to. Furthermore, when the camera body is mounted on a tripod, etc., the second
By rotating the arm to the rear and positioning the view finder to the rear, you can look into the view finder from the rear of the camera body at a very close position, so even when using the camera on a tripod, etc. Usability can be significantly improved.

[Brief explanation of drawings]

Figures 1 to 6B show an embodiment of the present invention, in which Figure 1 is a perspective view of the entire camera in normal use, and Figure 2 is a perspective view of the camera when the first arm is rotated in the horizontal direction. FIG. 3 is a partially cutaway plan view of the main parts, and FIGS. 4A and 4B are perspective views of the entire camera in a state where the
Figures 5A and 5B are a sectional view taken along the line, and Figures 5A and 5B show the stopper mechanism of the viewfinder. Figure 3 is a sectional view taken along the line, and Figures 6A and 6B are schematic side views of the entire camera in use. be. 7th
The figure is a side view of the entire conventional camera. In addition, in the symbols used in the drawings, 11...portable video camera, 12...camera body, 17
... Viewfinder, 20 ... Arm, 21
...First arm section, 22... Second arm section, 27
...rotating shaft, 28... holder, 30... locking means, 37... locking means, 40... stopper mechanism, 48... rotating shaft, 55... stopper mechanism.

Claims (1)

[Claims for Utility Model Registration] The camera comprises a camera body, a viewfinder, and an arm formed into a substantially L-shape by a first arm part and a second arm part to connect these parts; The first arm part is supported by the main body so as to be rotatable in the horizontal direction about a vertical axis of rotation, and the second arm part is freely rotatable in the vertical direction about the horizontal axis of the first arm part. The portable video camera is configured such that the view finder is supported by the second arm portion so as to be rotatable in the vertical direction about a horizontal axis of rotation.