JPS6288898A - Television camera device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention shows the configuration of a television camera equipped camera device having a rotary table. In FIG. 5, 1 is a television camera with a lens 2 attached. 3 is a rotating table, which rotates around a rotating shaft 4. A cable 5 transmits video signals, power, and the like.

Next, the operation of the above-mentioned conventional example will be explained with reference to FIGS. 5 and 6. The rotation of the motor 31 in the rotary table 3 is transmitted through the deceleration mechanism 32, the lip mechanism 33, and rotates the rotary shaft 4. Change the direction of camera 1. Here, if two sets of motor deceleration hand mechanism-slip mechanism systems are prepared, one of them can rotate the camera in the horizontal direction, and the other can rotate the camera in the vertical direction.

Problems to be Solved by the Invention However, in the above-described embodiment, the television camera 1 cannot rotate around the rotation axis 4 that is distant from the center of gravity, and the rotary table 3 requires a large driving torque.

Further, the structure becomes complicated because the deceleration mechanism 32 and the slip mechanism 33 are required before the rotation of the motor inside the rotary table is transmitted to the rotary shaft 4. In other words, the rotary table 3 requires a large drive torque and a complicated structure, resulting in a large shape and heavy weight. Furthermore, since the cable 5 moves in a large circle as the television camera 1 rotates, a space is required around the rotating table.

The present invention eliminates the drawbacks of the above-mentioned conventional examples, and provides an excellent television camera device that can reduce the size of the rotating table, reduce the weight, simplify the structure, and further narrow the space for the rotating chamber. The purpose is to provide

In order to achieve this object, the present invention provides a system in which the rotary shaft of the rotary table is hollow and passes through a position close to the center of gravity of the television camera or its camera head, and the rotation is performed by a surface-corrugated ultrasonic motor. It is designed to be driven.

Function: Therefore, the device including the rotating system can be made smaller, and if the rotating shaft is hollow, the wire can be passed through the hollow shaft, which is further advantageous.

Embodiment Below, the explanation will be given with reference to the embodiment shown in FIGS.
It is rotatable with respect to the four-turn table 13. 17 is a hollow rotating shaft fixed to the rotating table holding plate 20. 1
8.19 is a surface wave type ultrasonic motor (this motor itself is already known, for example, Japanese Patent Laid-Open No. 59-185179).
．． The relationship with the rotating table 13 will be explained as shown in FIG. 4, where 19a is a part of the stator, 19b is a rotor part, and A is a wire passage route.

16 supplies power to the camera head section 11, receives output from the head section 11, processes it, and outputs it to the monitor or V
This is the camera body that supplies output to the TR.

Next, the operation of the above embodiment will be explained. The rotation axis 14 and 17 of the camera rad 11 pass through a position close to its center of gravity.
rotate around. By operating the surface waveform ultrasonic motor 18, the camera radar 11 is tilted and rotated around the rotation axis 14, and by operating the surface waveform ultrasonic motor 19, the camera radar 11 is tilted and rotated around the rotation axis 17. Pan rotation. A cable 15 from the camera head connects to the camera body 16 through rotating shafts 14 and 17.

As described above, according to this embodiment, by dividing the television camera into the force 7, the dot part 11, and the camera body part 16, the camera part to be rotated can be made compact, and the rotating shafts 14 and 17 can be By passing the head near the center of gravity, the rotational torque is reduced, and the surface waveform ultrasonic motor 18
．． By performing the rotational drive at 19, a reduction mechanism and a slip mechanism for the motor are not required, so that the rotating table 13 can be made smaller and lighter. Furthermore, by making the rotating shafts 14 and 17 hollow and passing the cable from the camera head section 11 to the camera body section 16, the space required for installing the rotating table 13 can be reduced.

Effects of the Invention Although the embodiments have been explained above, according to the present invention, the rotating shaft can be directly driven by the surface waveform ultrasonic motor as shown in FIG.
As a television camera, if only the head part is used, a small device with a rotation function can be obtained.

Although the motor is provided on one side of the camera head, it may be provided on both sides.

[Brief explanation of drawings]

1.2 are a front view and a side view of a television camera device according to an embodiment of the present invention, FIG. 3 is a block diagram thereof, FIG. 4 is a cross-sectional perspective view around the rotating shaft through which a wire passes, and FIG. 5 6 is a configuration diagram of a conventional television camera device, and FIG. 6 is a block diagram showing the flow of power transmission of a motor in the same device. 11...Camera head section, 18.19...Surface waveform ultrasonic motor, 14.17...Rotation axis. 6m Patent Attorneys Toshio Nakao 1 person Figure 1/f-1-Omera Herad L2 --- Lens Figure 2 Figure 13 Figure 4 Figure 6

Claims (3)

[Claims] (1) The television camera or its head is rotatable about at least a tilt axis or a pan axis;
A television camera device provided with means for starting them with a surface waveform ultrasonic motor. (2) The television camera device according to claim 1, wherein the tilt axis and the pan axis are hollow. (3) The television camera device according to claim 1, wherein a cable is passed through a tilt axis and a pan axis.