JP2008236165A - Device for zoom rating at low angle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for zoom rating at low angle which can perform zoom operation with a thumb of a hand holding a grip without performing a work to remove the grip which is attached to a camera instrument from the first. <P>SOLUTION: A grip main body and the device for zoom rating at low angle are provided with a main body for the device; a thumb ring which is attached to the main body, is rotatable forwardly and reversely, and gives an instruction for controlling a zoom motor of a lens unit attached to the camera instrument by rotating forwardly or reversely; a thumb ring operation unit which is prepared to the thumb ring, and is operated so as to rotate the thumb ring forwardly or reversely by the thumb of a hand which holds the grip main body; and an attaching means which freely attaches/detaches the main body to/from the grip apparatus for the camera instrument in a condition that the thumb ring operation unit is placed nearly on an axis line of the front side supporting unit. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-angle grip device for an ENG camera, and particularly to a low-angle grip for an ENG camera equipped with a zoom operation member for performing a zoom operation on a grip for holding the ENG camera by hand when shooting a subject at a low angle. Relates to the device.

  2. Description of the Related Art Conventionally, a low angle grip device for an ENG camera has been proposed in which a zoom operation member for performing a zoom operation is attached to a grip for gripping the ENG camera when photographing a subject at a low angle (for example, Patent Document 1).

  The low angle grip apparatus described in Patent Document 1 will be described with reference to the drawings.

  As shown in FIG. 6, the low-angle grip device 18 'described in Patent Document 1 includes a grip 20', a thumb ring 22 'rotatably provided at the front end of the grip 20' (the grip 20 on the upper surface and both side surfaces thereof). ), A potentiometer 20A ′ for detecting the rotation of the thumb ring 22 ′, a front support member 50 ′ and a rear support member 60 ′ for supporting the grip 20 ′, and a front support A base member 82 ′ to which the member 50 ′ and the rear support member 60 ′ are attached, a screw 84 ′ and the like are provided for fixing the base member 82 ′ and the like to the upper surface of the camera device (not shown).

In this low-angle grip device 18 ', the zoom operation is performed by rotating the thumb ring 22' forward and backward with the thumb of the hand holding the grip 20 '. That is, when the thumb ring 22 'is rotated, the rotation angle of the thumb ring 22' is detected by the potentiometer 20A ', and the detected rotation angle and the like are transmitted to a drive unit (not shown) via a control cable (not shown). Sent. The drive unit rotates the zoom ring (not shown) by controlling the rotation speed, rotation direction, etc. of the zoom motor (not shown) in the lens apparatus according to the transmitted rotation angle of the thumb ring 22 ', etc. Move the zoom lens.
Japanese Patent Laid-Open No. 11-98388

  However, in Patent Document 1, in order to perform a zoom operation with the thumb of the hand holding the grip 20 ′, the operation of removing the grip originally attached to the camera device (the upper surface thereof) and the low-angle grip device 18 ′ are performed. Two operations are required to attach the device to the ENG camera device (the upper surface thereof).

  The present invention has been made in view of such circumstances, and can perform a zoom operation with the thumb of the hand holding the grip without performing the work of removing the grip originally attached to the camera device. An object is to provide a zoom rate device.

  The invention according to claim 1 includes a grip body, a front support portion extending upward from the upper surface of the camera device and continuing to the front end of the grip body, and extending upward from the upper surface of the camera device to the rear end of the grip body. In a low-angle zoom rate device that is detachably attached to a camera device grip device having a continuous rear support portion, the zoom rate device body and the zoom rate device body are attached to the zoom rate device body so as to be able to rotate forward and backward. A thumb ring that gives an instruction to control a zoom motor of a lens device mounted on the camera device by being rotated forward and backward, and a thumb that is provided on the thumb ring and that grips the grip body. A thumbling operation unit operated to rotate the thumbling forward and backward, and the thumbling operation unit is an abbreviation of the front support portion. In a state of being located on a line, characterized in that it comprises a mounting means for removably mounted to the zoom rate apparatus body gripping device for the camera device.

  According to the first aspect of the present invention, since the zooming device main body is detachably mounted on the camera device in a state where the thumbling operation portion is positioned on the substantial axis of the front support portion, The zoom operation can be performed with the thumb of the hand holding the grip, simply by retrofitting the low-angle zoom rate device to the grip that was originally attached, without removing the grip that was originally attached to the camera device. Can be done. In addition, since the thumb ring operating part is located on the substantially axis line of the front support part, the zoom operation can be performed very easily by the thumb of the hand holding the grip. In other words, the cameraman places the index finger at the corner portion where the grip body and the front support portion are connected and holds the grip body (the index finger is placed at the corner portion even if the center of gravity of the camera device and the lens device is taken into consideration). It is easy to hold and appropriate, and can be said to be the most natural gripping method), and the thumbling (thumbing operation unit) can be operated with the thumb of the gripped hand.

  According to a second aspect of the present invention, in the first aspect of the present invention, the mounting means detachably mounts the zoom rate apparatus main body to the front support portion.

  According to the second aspect of the present invention, the thumb ring operating part can be positioned on the substantially axis of the front support part simply by detachably attaching the zoom rate apparatus main body to the camera apparatus.

  The invention according to claim 3 further includes a switch that is turned on and off by being operated with a thumb of a hand holding the grip body in the invention according to claim 1 or 2, wherein the switch includes the switch The zoom rate apparatus main body part is disposed within a reachable range of the thumb of the hand gripping the grip main body and in front of and above the thumbling operation unit.

  According to the third aspect of the present invention, since the switch is arranged in the reachable range of the thumb of the hand holding the grip body and in front of and above the thumb ring operating portion, zooming is performed by the thumb of the hand holding the grip. Operations and switch operations can be performed in a natural flow of operation.

  According to a fourth aspect of the present invention, in the invention according to the second or third aspect, the attachment means is a hand that grips the grip body at a corner portion that is a connection portion between the grip body and the front support portion. It is formed so that the space where an index finger is located is formed.

  According to the invention described in claim 4, the mounting means is formed so that a space is formed in which the index finger of the hand holding the grip body is located at a corner portion which is a connection portion between the grip body and the front support portion. Therefore, the index finger of the hand holding the grip body does not interfere with the mounting means.

  According to the present invention, it is possible to provide a low-angle zoom rate device that can perform a zoom operation with the thumb of the hand holding the grip without performing the work of removing the grip originally attached to the camera device. Become.

  Hereinafter, a low-angle grip device for an ENG camera according to a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of an ENG camera equipped with a low angle zoom rate device according to a first embodiment of the present invention. FIG. 2 is a perspective view of the low angle zoom rate device of the ENG camera according to the first embodiment of the present invention.

  As shown in FIG. 1, the ENG camera 10 includes a camera device 12 and a lens device 14. The camera device 12 is equipped with an image pickup device that picks up the subject light guided from the lens device 14, a VTR device that records an image signal obtained by the image pickup device, and the like. The lens device 14 includes optical members such as a focus lens, a zoom lens, and a diaphragm, and these lenses and the diaphragm are driven by a rotation operation of the focus ring, the zoom ring, and the iris ring.

  The lens device 14 is equipped with a drive unit (not shown). A zoom motor (servo motor) or the like is mounted in the drive unit, and the zoom motor meshes with a gear formed on the circumferential surface of the zoom ring through a gear. The zoom motor is remotely controlled by inputting the rotation angle of the thumb ring and the like from the outside via a control cable connected to a terminal provided in the drive unit. It should be noted that the lens operation can be switched from servo to manual by a switch provided in the drive unit.

  A grip device 20 for gripping the ENG camera is provided on the upper surface of the camera device 12. The grip device 20 includes a grip body 21, a front side fixing portion 22a fixed to the upper surface of the camera device 12, and a front side support portion 22b extending upward from the front side fixing portion 22a and continuing to the front end of the grip body 21. The grip support 22, the rear side fixing part 23 a fixed to the upper surface of the camera device 12, and the upper side of the rear side fixing part 23 a (upwardly illustrated in the left side in FIG. 1) are continuous to the rear end of the grip body 21. A rear grip support 23 having a rear support 23b.

[Configuration of Low Angle Zoom Rate Device 30]
A low angle zoom rate device 30 is detachably attached to the grip device 20 (front support portion 22b). As shown in FIGS. 1 and 2, the low-angle zoom rate device 30 is mounted so that the zoom rate device main body 33, the thumb ring 36, and the zoom rate device main body 33 are detachably attached to the grip device 20 fixed to the camera device 12. Means 38 and the like are provided.

[Configuration of Zoom Rate Device Body 33]
As shown in FIGS. 1, 2, and 3, the zoom rate apparatus main body 33 includes a cylindrical body 31 and a box-shaped body 32. A thumb ring 36 is rotatably attached to the cylindrical body 31. In the cylindrical body 31, a potentiometer (not shown) for detecting the rotation angle of the thumb ring 36 is incorporated. The rotation angle of the thumb ring 36 detected by the potentiometer is output from a terminal 31b provided on one end face 31a of the cylindrical body 31, and transmitted to the drive unit via a control cable C connecting the terminal 31b and the drive unit. Is done.

  A cylindrical body 31 is provided with a box-like body 32 above it. One end surface 32 a of the box-shaped body 32 is formed substantially flush with the one end surface 31 a of the cylindrical body 31. A switch 32b for switching the operation content of the thumb ring 36 is provided on the one end face 32a. For example, the switch 32b can be set to telephoto when the thumb ring 36 is rotated to the right and wide when the thumb ring 36 is rotated to the left (when the switch 32b is set in the left direction in FIG. 4). Further, by switching the switch 32b, it is possible to set the thumb ring 36 to be wide when rotated to the right and to tele when rotated to the left.

  As shown in FIGS. 2 and 3, the box-like body 32 is formed with an inclined surface 32c between the upper surface and the other end surface, and a switch 32d (for example, an image currently being broadcast) is formed on the inclined surface 32c. Is provided on the monitor or the like. That is, the switch 32d is disposed in a zoom rate device main body 33 portion that is within the reachable range of the thumb of the hand holding the grip main body 21 of the camera device 12 and is located in front of and above the thumb ring operating unit 34. The on / off state of the switch 32d is output from the terminal 31b and transmitted to the lens device 14 and the like via the control cable C.

[Configuration of the thumb ring 36]
The thumb ring 36 includes a thumb ring operating portion 34 and a semi-cylindrical body 35. The thumb ring operating portion 34 is formed with a recess 34a for placing the thumb of the hand holding the grip body 21 (three recesses on the upper and both sides in the figure are illustrated). A semi-cylindrical body 35 in which a part of the outer peripheral surface is cut out in the axial direction is continuously provided at one end of the thumb ring operating portion 34. The thumb ring operating portion 34 is rotatably attached to the cylindrical body 31 of the zoom rate apparatus main body 33 through the cutout portion 35 a of the semi-cylindrical body 35.

  When the thumb ring 36 is rotated forward and backward with the thumb, the rotation angle or the like is detected by a potentiometer (not shown) provided in the zoom rate device main body 33, and the detected rotation angle or the like is detected by the zoom rate device main body. The signal is transmitted to the drive unit via a terminal 31b provided at 33 and a control cable C connected to the terminal 31b.

[Mounting means 38 of the zoom rate apparatus main body 33]
A plate body 37 is fixed to the other end surface 31c of the cylindrical body 31 of the zoom rate apparatus main body 33 by screws or the like. As shown in FIG. 2, on the surface of the plate 37 opposite to the side on which the cylindrical body 31 is fixed, there is a recess 38a into which the front grip support 22 of the grip device 20 is fitted, and the recess 38a. Female screw portions 38b disposed on both sides are provided. Both ends 38d and 38d of the half ring member 38c are screwed to the female screw portions 38b and 38b, respectively. Since the cross section formed by the half ring member 38c and the recess 38a is set to be slightly narrower than the cross section of the front grip support 22 of the grip device 20, the half ring member 38c is formed on each of the female thread portions 38b and 38b. The zoom rate device 30 can be detachably attached to the grip device 20 by screwing both ends 38d and 38d. Further, as shown in FIG. 2, the mounting means 38 and the thumb ring operating portion 34 are arranged on the same axis on the same surface side of the plate body 37, so that only the zoom rate device 30 is mounted on the grip device 20. The thumbling operation part 34 can be positioned substantially on the axis of the front support part 22b.

  The half ring member 38c is formed so as to incline in a tapered manner from the upper end of the both ends toward the center. As a result, a space S in which the index finger of the hand holding the grip body 21 is positioned is formed at the corner portion, which is a connection portion between the grip body 21 and the front support portion 22b (see FIGS. 1 and 5). The index finger of the hand holding the main body 21 and the mounting means 38 do not interfere with each other.

[Usage example of low angle zoom rate device 30]
Next, a usage example of the low-angle zoom rate device 30 having the above configuration will be described.

  First, the low angle zoom rate device 30 is mounted on the grip device 20 of the camera device 12. That is, the front support portion 22b of the grip device 20 is fitted into the recess 38a in a state where the thumb ring operating portion 34 is positioned on the substantial axis of the front support portion 22b. Then, both ends 38d and 38d of the half ring member 38c are screwed to the female screw portions 38b on both sides of the concave portion 38b. As shown in FIG. 2, the mounting means 38 and the thumb ring operating portion 34 are arranged at a predetermined interval on the same axis on the same surface side of the plate 37, so that the zoom rate device 30 is attached to the grip device 20. By doing so, it is possible to position the thumbling operation part 34 on a substantially axial line of the front support part 22b. Next, the terminal 31b of the low angle zoom rate device 30 and the terminal of the drive unit are connected by a control cable.

  As a result, the grip body 21 can be obtained simply by retrofitting the low-angle zoom rate device 30 to the grip 20 originally attached without removing the grip device 20 originally attached to the camera device 12. The zoom operation can be performed with the thumb of the hand holding the.

  Next, when the subject is photographed at a low angle, the grip body 21 is held as shown in FIG. At this time, the half ring member 38c is formed so as to be inclined from the upper end of both ends toward the central portion, and the hand holding the grip main body at the corner portion which is the connecting portion between the grip main body 21 and the front support portion 22b. Since the space S in which the index finger is located is formed (see FIGS. 1 and 5), the index finger of the hand gripping the grip body 21 and the mounting means 38 do not interfere with each other, and it is easy to grip.

  Next, if necessary, the thumb ring operating unit 34 is operated with the thumb of the hand holding the grip body 21 to rotate the thumb ring 36. When the thumb of the thumb ring 36 is operated, the thumb ring operating portion 34 is positioned substantially on the axis of the front support portion 22b (see FIG. 1 and the like), so that the zoom operation can be performed very easily by the thumb of the hand holding the grip body 21. Can be performed. That is, as shown in FIG. 5, the cameraman places the index finger on the corner S where the grip body 21 and the front support 22b are connected and holds the grip body 21 (the center of gravity of the camera device 12 and the lens device 14). In view of the above, it is easy to hold the index finger at the corner portion S, which is appropriate and can be said to be the most natural gripping method.) The thumb ring 36 (the thumb ring operation unit 34) Can be operated.

  Further, the switch 32d is disposed in the zoom rate device main body 33 portion which is within the reachable range of the thumb of the hand gripping the grip main body 21 and is located in front of and above the thumb ring operating portion 34 (see FIG. 5 and the like). . As a result, the thumb ring 36 and the switch 32 can be operated with the thumb in the natural flow of movement with the thumb of the hand holding the grip body 21.

  As described above, according to the low-angle zoom rate device 30 of the present embodiment, the zoom rate device main body 33 is moved to the camera device 12 (front side) while the thumbling operation unit 34 is positioned on the substantial axis of the front support unit 22b. Since the mounting means 38 is detachably mounted on the support portion 22b), the grip (front support portion 22b) originally mounted without removing the grip device 20 originally mounted on the camera device 12 is provided. The zoom operation can be performed with the thumb of the hand holding the grip body 21 only by performing the work of retrofitting the low-angle zoom rate device 30 to the above. In addition, since the thumb ring operating part 34 is positioned on the substantially axis line of the front support part 22b (see FIG. 1 and the like), it is possible to perform the zoom operation very easily with the thumb of the hand holding the grip body 21. . That is, as shown in FIG. 5, the cameraman places the index finger on the corner S where the grip body 21 and the front support 22b are connected and holds the grip body 21 (the center of gravity of the camera device 12 and the lens device 14). In view of the above, it is easy to hold the index finger at the corner portion S, which is appropriate and can be said to be the most natural gripping method.) The thumb ring 36 (the thumb ring operation unit 34) Can be operated.

  Further, since the mounting means 38 and the thumb ring operating portion 34 are arranged at a predetermined interval on the same axis on the same surface side of the plate body 37 (see FIG. 2 and the like), the zoom rate device main body 33 is attached to the camera device 12. The thumb ring operating part 34 can be positioned substantially on the axis of the front support part 22b simply by being detachably attached to the (front support part 22b).

  Further, since the switch 32d is disposed in the reachable range of the thumb of the hand holding the grip body 21 and in front of and above the thumb ring operating portion 34 (see FIG. 5 and the like), the thumb of the hand holding the grip body 21 is disposed. Thus, zoom operation and switch operation can be performed in a natural flow of operation.

  Further, the mounting means 38 is formed so that a space S where the index finger of the hand holding the grip body 21 is located is formed in a corner portion that is a connection portion between the grip body 21 and the front support portion 22b. That is, since the half ring member 38c is formed so as to be tapered toward the center from the upper end of both ends (see FIGS. 1 and 5), the index finger of the hand holding the grip body 21 and the mounting means 38 are attached. Is easy to grip without interference.

  In the present embodiment, the zoom rate apparatus main body 33 has been described as being detachably attached to the front support portion 22b, but the present invention is not limited to this. For example, the zoom rate device main body 33 may be detachably attached to the rear support portion 23b or the grip main body 21 or the like.

  In the present embodiment, the low-angle grip device is described as being detachably attached to the ENG camera, but the present invention is not limited to this. For example, it can be mounted on other types of cameras.

  Further, in the present embodiment, the mounting means 38 has a recess 38a, an internal thread portion 38b disposed on each side of the recess 38a, and a half ring member for screwing both ends 38d and 38d to the internal thread portions 38b and 38b, respectively. Although described as 38c, the present invention is not limited to this. Various other mounting means can be employed.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

1 is a side view of an ENG camera equipped with a low angle zoom rate device according to a first embodiment of the present invention. It is a perspective view of the low angle zoom rate device of the ENG camera which is the first embodiment of the present invention. FIG. 3 is a side view of the low angle zoom rate device shown in FIG. 2. FIG. 3 is a rear view of the low angle zoom rate device shown in FIG. 2. It is a figure for demonstrating the usage example of the low angle zoom rate apparatus which is 1st embodiment of this invention. It is a figure for demonstrating a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... ENG camera, 12 ... Camera apparatus, 14 ... Lens apparatus, 20 ... Grip apparatus, 21 ... Grip main body, 22 ... Front side grip support, 22a ... Front side fixing part, 22b ... Front side support part, 23 ... Rear side grip support Body, 23a ... rear side fixing part, 23b ... rear side support part, 30 ... low angle zoom rate device, 31 ... cylindrical body, 31a ... one end face, 31b ... terminal, 31c ... other end face, 32 ... box-like body, 32a ... One end surface, 32b ... Switch, 32c ... Inclined surface, 32d ... Switch, 33 ... Zoom rate apparatus main body, 34 ... Thumb ring operation part, 34a ... Recess, 35 ... Semi-cylindrical body, 35a ... Notch part, 36 ... Thumb ring 37 ... Plate body 38 ... Mounting means 38a ... Recessed portion 38b ... Female thread portion 38c ... Half ring member 38d ... End portion C ... Control cable

Claims (4)

The grip body,
A front support portion extending upward from the upper surface of the camera device and continuing to the front end of the grip body;
A rear support portion extending upward from the upper surface of the camera device and continuing to the rear end of the grip body;
In a low angle zoom rate device that is detachably attached to a camera grip device equipped with
A zoom rate device body;
A thumb ring which is mounted on the zoom rate device main body so as to be able to rotate forward and backward, and which gives an instruction to control a zoom motor of a lens device mounted on the camera device by being rotated forward and backward.
A thumb ring operating portion that is provided on the thumb ring and is operated to rotate the thumb ring forward and backward by a thumb of a hand holding the grip body;
Mounting means for detachably mounting the zoom rate device main body to the camera device grip device in a state in which the thumbling operation unit is positioned substantially on the axis of the front support unit;
A low-angle zoom rate device comprising:   The low-angle zoom rate apparatus according to claim 1, wherein the mounting unit detachably mounts the zoom rate apparatus main body to the front support portion. It further comprises a switch that is turned on and off by being operated with the thumb of the hand holding the grip body,
The switch is disposed in a zoom rate device main body portion that is within a reachable range of a thumb of a hand that holds the grip main body and is located in front of and above the thumbling operation portion. 2. A low-angle zoom rate device according to 2. The mounting means is formed so that a space is formed in which a forefinger of a hand holding the grip body is located at a corner portion which is a connection portion between the grip body and the front support portion. The low angle zoom rate device according to claim 2 or 3.

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