JPS61191174A - Photographing device - Google Patents

Abstract

PURPOSE:To improve operability by locking a turning means in an about middle position of the turning range and facilitating determination of the direction of a video camera though picture blur is not prevented. CONSTITUTION:When it is unnecessary to prevent picture blur, a yawing lock screw 56 and a pitching lock screw 59 are rotated and are engaged with notched parts 55 and 58. Since notched parts 55 and 58 are V-shaped and center parts of V shapes are provided in the center positions of the turning ranges, they are locked in about center positions of turning ranges of actuators 48 and 51, and a camera body 11 is operated together with a hand grip 34 as one body without moving the camera body 11 because power supplied to control circuits 46 and 49 are cut off.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a photographing device such as a video camera.

Conventional technology With the spread of video tape recording in recent years, there are many opportunities to use a video camera to take pictures, and there is a demand for a video camera that can perform stable camera work with less image blur even without the use of a tripod. Been 2 = -7, so there is.

An example of the conventional photographing device mentioned above will be described below with reference to the drawings. Conventionally, this type of photographing device has had a structure as shown in the front and side views of FIGS. 4 and 5, as shown in, for example, Japanese Patent Application Laid-Open No. 53-64175. In other words, it is a directional gyro with a built-in rotor that rotates at high speed at the center.

A case 1 is supported by a horizontal gimbal 3 with left and right horizontal axes 2, and the horizontal gimbal 3 is further supported by a vertical gimbal 5 with left and right gimbal axes 4. Similarly, a rotor case 6 at the center of the vertical gyro is supported by a horizontal ginopal 7 and a vertical ginopal 8, and a video camera 9 and the like are installed on the rotor case 6. Therefore, by rotating the directional gyro and the vertical gyro at high speed, the video camera 9 is stable even when shooting in a shaking state, and it is possible to obtain a shooting surface image with little image blur.

Problems to be Solved by the Invention However, in the above-mentioned configuration, since a high-speed rotating gyroscope is used, the device becomes large and heavy, so the entire device must be installed and used. In addition to the problem of lack of mobility, even if the device is made small enough to allow hand-held shooting, it is possible to stop the image stabilization means such as a gyro when there is no need to prevent image stabilization. There was a problem that it was difficult to determine the direction because the camera was in an unstable state.

In order to solve the second problem, the photographing device of the present invention includes a camera body having a photoelectric conversion means for converting an optical image from a photographing lens for photographing a subject into an electrical signal; A rotating means for rotating the camera body by a predetermined amount in a yawing direction (or a pitching direction), and a locking means for locking the rotating means at a position approximately in the middle of a rotation range of the rotating means. It's something to prepare for.

The present invention has a two-piece configuration that does not use a large and heavy gyro as in the past, making it easy to create a compact and lightweight configuration. Since it is possible to lock the camera at an intermediate position within the range, it is possible to easily determine the direction of the video camera even when image blur prevention is not performed.

Embodiment Hereinafter, a photographing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of the main parts of a photographing device according to an embodiment of the present invention, in which a camera body 11 has a photographing lens 12 on the front surface for photographing a subject, and The optical image is converted into an electrical signal by an image sensor 13 such as a CCD provided on the focal plane of the photographic lens 12. This electrical signal is converted into a predetermined video signal by the video circuit 14 and transmitted to the camera terminal 15 provided on the bottom surface of the camera body 11. The camera body 11 has a concave portion 16 on the bottom surface, and a convex portion 1 on the top surface of the rotating plate 17.
It is engaged with 8. The rotary plate 17 is rotatably supported by a ball bearing 20 press-fitted into the intermediate plate 19 about approximately the center of gravity of the camera body 11 and the rotary plate 17, and the lower surface of the rotary plate 17 has a magnetic Material back plate 2
A ring-shaped magnet 22, which has been magnetized as required, is bonded through the magnet 1. Furthermore, a stator winding 24 is bonded to two surfaces of the intermediate plate 19 at a position facing the magnet 22 via a stator flat plate 23 made of a magnetic material. A rotating plate terminal 25 that can come into contact with the camera terminal 15 is provided at the center of the convex portion 18 of the rotating plate 17, and can transmit video signals and the like supplied to the camera terminal 16. Furthermore, a ring-shaped magnet 27 that is magnetized in a predetermined manner is adhered to the right side of the intermediate plate 19 via a bank plate 26 made of a magnetic material, and a ring-shaped magnet 27 made of a magnetic material is attached to the left side of the fixed plate 28. A stator winding 30 is bonded to a position facing the magnet 27 via a stator flat plate 29 . Intermediate plate 1
9 has a shaft portion 31 on the right side, and a ball bearing 32 press-fitted into the fixed plate 28 connects the camera body 11 and the rotating plate 1.
7 and the intermediate plate 19 so as to be rotatable about the approximate center of gravity of the intermediate plate 19. Note that the intermediate plate 19 is connected to the magnet 2
7 and the stator flat plate 29, it is stably held without falling off.

The fixing plate 28 has a recess 33 on the right side and engages with a protrusion 35 on the left side of the hand grip 34. Furthermore, the right side of the fixing plate 28 and Hanodog'J knob 34
A fixing plate terminal 36 and a grip terminal 37 are respectively provided on the left side surface 34 of the terminal so that they can come into contact with each other. Also, rotating plate 17. The intermediate plate 19 and the fixed plate 28 each have through holes 38, 39, and 40 through which lead wires are passed.

A finder mounting bracket 4 is attached to the top surface of the hand grip 34.
1 is provided, and a viewfinder 42 for checking the video signal is fixed. The hand grip 34 also includes a zoom switch 43 for electrically zooming the photographic lens 12, a VTR connection terminal 44. A recording switch 46 is provided for controlling the recording operation of the connected VTR. FIG. 2 is a block diagram showing electrical connections, and a control circuit 46 built in the intermediate plate 19 is connected to an angular velocity sensor 47 provided on the rotary plate 17, and a signal from the angular velocity sensor 47 is connected to the control circuit 46 built in the intermediate plate 19. Accordingly, an actuator 48 composed of a magnet 22, a stator winding 24, etc. is driven. The angular velocity sensor 47 detects camera shake in the yawing direction when rotating in a horizontal plane, and the control circuit 46 controls the actuator 48 so that the output of the angular velocity sensor 47 always approaches zero, thereby detecting camera shake in the horizontal direction. can be reduced.

Similarly, a control circuit 49 is built into the fixed plate 28, and the magnet 2
7, the stator winding 30, and the like. The angular velocity sensor 60 detects camera shake in the pitching direction rotating in a vertical plane, and the control circuit 49 controls the actuator 51 so that the output of the angular velocity sensor 5o always approaches zero, thereby detecting camera shake in the vertical direction. Shake can be reduced.

, the power supply 62 supplied to the VTR connection terminal 44 is connected to the i lip terminal 37 . Intermediate plate 19 via fixed plate terminal 36
is supplied to the rotating plate terminal 25. through the through holes 38, 39.40. Camera body 11 via camera terminal 15
is supplied to.

Next, the lock mechanism will be explained. The rotary plate 17 has a ■-shaped notch 55 as shown in the plan view of the main part in FIG.
FIG. 3 shows the locked state, and FIG. 1 shows the unlocked state. In the notch 55,
A yawing lock screw 56 provided on the intermediate plate 19 can be locked, and when the lock screw 56 is rotated and the notch 56 is pressed, a lock detection switch 57 detects this and cuts off the power supplied to the control circuit 46. It is configured to do so. Similarly, rotation of the actuator 510 can be locked by rotating the middle screw 69 in the pitching direction, and the power supply to the control circuit 49 is cut off by the lock detection switch 60.

The operation of the photographing apparatus configured as described above will be explained below. First, when the actuator 48°9 base 51 is not locked and the camera body 11 is rotatably supported, horizontal and vertical camera shake is detected by the angular velocity sensor 47°60, and the control circuit 46 detects camera shake in the horizontal and vertical directions. The actuator 48 is driven by the control circuit 49 to drive the actuator 61, and the angular velocity is set to 47.150.
By controlling the output so that it always approaches zero,
Even if the hand grip 34 held in the hand shakes due to camera shake or the like, the camera body 11 does not shake and a stable image can be taken, and this video can be recorded on a VTR (not shown) connected to the VTR connection terminal 44. can do.

Next, when there is no need to prevent image blurring, such as when photographing using a tripod or the like, the yawing lock screw 66 and the pitching lock screw 59 are rotated and engaged with the notches 55 and 58, respectively.

At this time, the notch 55.58 is V-shaped, and the center part of the letter 7 is provided at the middle position of the rotation range, so the actuator 48.51 is locked at approximately the middle position of the rotation range. Since the power supply to the control circuit 10-46 and 49 is also cut off, the camera body 11 can be operated integrally with the hand grip 34 without moving.

Also, the yawing lock screw 56. It is also possible to rotate only in one axis direction by operating the pitch/Glock screws 59 individually.

Effects of the Invention □ As described above, the present invention provides a camera body having a photoelectric conversion means for converting an optical image from a photographing lens for photographing a subject into an electrical signal, and a camera body that is arranged in a predetermined direction in the yawing direction (or pitching direction). , and a locking means that locks the rotating means at a position approximately in the middle of the rotating range of the rotating means, even when image blur prevention is not performed. It becomes easier to determine the direction of the camera, and operability can be improved.

[Brief explanation of drawings]

FIG. 1 is a structural diagram of the housing of a photographing device according to an embodiment of the present invention, FIG. 2 is a block diagram showing electrical connections, FIG. 3 is a plan view of the housing of the locking means, and FIG. A front view of a conventional photographing device, and FIG. 5 is a side view. 11... Camera body, 48... Actuator, 51... Actuator, 56 Yawing lock screw, 69... Binochino Glock screw. Name of agent: Patent attorney Toshio Nakao (1 person)
Ward◇ｑ Regret

Claims (1)

[Claims] a camera body having a photoelectric conversion means for converting an optical image from a photographing lens for photographing a subject into an electrical signal; a rotation means for rotating the camera body by a predetermined amount in a yawing direction (or a pitching direction); 1. A photographing device comprising: a locking means for locking the rotating means at a position approximately in the middle of a rotation range of the moving means.