JPH0540616Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an unnecessary recording prevention device for a video camera using a vibration-sensitive switch.

(Prior art) A conventional video camera is equipped with a recording switch at hand. When the recording switch is pressed once, the recording circuit is turned on and shooting is possible. When the recording switch is then pressed again, The recording circuit
It was configured so that it would be turned off and photography would become impossible.

(Problem that the invention aims to solve) However, conventional video cameras are not equipped with a means to prevent forgetting to turn off the recording switch. If you forget, the recording circuit will remain on, so if you are carrying a video camera with you, unnecessary objects such as the ground will be photographed while shaking a lot, wasting battery power. Not only that, but there was also the problem that the video tape was wasted.

This invention was made to solve the conventional problems as described above. If you forget to turn off the recording switch and the video camera experiences vibrations above a certain level, it will sense the vibrations and record the video. The purpose of this is to turn off the recording circuit and prevent unnecessary recording due to forgetting to turn off the recording switch.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the unnecessary recording prevention device for a video camera of the present invention has a recording prevention circuit having a vibration-sensitive switch that turns on/off at the recording switch.
The recording circuit is connected to a recording circuit that is turned off, and when the vibration sensitive switch is turned on while the recording circuit is turned on, the recording circuit is turned off.
Next, a control circuit is provided that keeps the recording circuit OFF until the recording switch turns ON the recording circuit, and the recording prevention circuit is configured to keep the recording circuit OFF.
The configuration includes a manual release switch to turn it off.

The vibration sensitive switch has an inner contact and an outer contact surrounding the inner contact, the outer contact is fixed to a fixed member, and the inner contact is connected to the outer side by an elastic support rod that is long in the axial direction of the outer contact. A device is used that is swingably supported with a gap maintained between it and the contact point.

(Function) In this invention, when vibration is applied to the video camera,
The vibration causes the inner contact supported by the elastic support rod to swing and contact the outer contact surrounding the inner contact to turn on the vibration sensitive switch.

If this vibration-sensitive switch is turned on while the recording circuit of the video camera is turned on, the recording circuit is turned off by the control circuit.
This recording circuit is held in its OFF state until the next time the recording circuit is turned ON.

Therefore, if the user forgets to turn off the video recording switch, when the vibration-sensitive switch is turned on due to vibrations caused by carrying the video camera around, the recording circuit is turned off, preventing unnecessary recording.

Also, if you only install a recording prevention circuit, there is a possibility that in situations where the camera is subject to vibrations, such as when taking pictures while riding in a car, the vibrations will turn off the recording circuit and make it impossible to take pictures. However, this recording prevention circuit is equipped with a manual release switch that turns off the recording prevention circuit, so this release switch can be used to turn off the recording prevention circuit.
If you turn it off, you can take pictures without any problems even when the camera is subject to vibrations.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The drawings show an unnecessary recording prevention device according to an embodiment of the present invention.

In this unnecessary recording prevention device A, a recording prevention circuit 2 having a vibration sensitive switch 1 is connected to a recording circuit 4 having a recording switch 3.

The vibration sensitive switch 1 has a cylindrical inner contact 11 and a ring-shaped outer contact 12 surrounding the inner contact 11, and the outer contact 12 is fitted and fixed within a switch case 13 as a fixing member. The inner contact 11 is fixed to the tip of an axially long elastic support rod 14 of the outer contact 12, and the elastic support rod 1
4 is fixed to the end face of the switch case 13, and there is a gap 1 between the inner contact 11 and the outer contact 12.
5 and is swingably supported. In this case, in this embodiment, by providing the elastic support rod 14 obliquely with respect to the normal installation direction of the video camera,
One vibration-sensitive switch 1 is designed to be able to sense vertical and lateral vibrations, but there are two types: one with the elastic support rod oriented horizontally so as to be sensitive to vertical vibrations, and the other with the elastic support rod oriented vertically so as to be sensitive to lateral vibrations. Two vibration sensitive switches, one oriented and one oriented, may be used.

The elastic support rod 14 is electrically conductive, and its elastic force is set to such an extent that it does not respond to small vibrations during normal shooting, but is sensitive to large vibrations such as when casually carrying a video camera. There is.

Further, the recording prevention circuit 2 having the vibration sensitive switch 1 is provided with a release switch 5.
This release switch 5 is a manual button switch that is normally biased by a spring 51 to keep the recording prevention circuit 2 ON. is OFF
become.

The recording circuit 4 is turned on or off by the recording switch 3. First, when the recording switch 3 is pressed, the recording circuit 4 is turned on and becomes ready for shooting. When the recording switch 3 is pressed in this state, The circuit configuration is such that the recording circuit 4 is alternately turned on and off each time the recording switch 3 is pressed so that the recording circuit 4 is turned off and photography is disabled.

Further, the recording circuit 4 is provided with a control circuit 6, and this control circuit 6 is configured to control the recording circuit 4.
When the vibration sensitive switch 1 is turned on when it is ON,
The recording circuit 4 is turned OFF, and then the recording switch 3 is controlled to maintain the OFF state until the recording circuit 4 is turned ON.

Therefore, during normal shooting, pressing the recording switch 3 turns on the recording circuit 4, making it possible to shoot, and when you want to interrupt shooting, pressing the recording switch 3 again turns on the recording circuit. 4 is OFF
It becomes impossible to take pictures.

If you forget to turn off the recording switch 3 when interrupting shooting, the recording circuit 4 will
Since it is ON, shooting continues, but when vibration is applied due to carrying around the video camera, etc., the vibration sensitive switch 1 turns on in response to the vibration, and the control circuit 6 turns off the recording circuit 4. This prevents unnecessary recording.

Furthermore, when taking pictures in situations where there is a lot of vibration, such as when a car is running, simply installing the recording prevention circuit 2 will cause the vibration sensitive switch 1 to be turned on directly, making it impossible to take pictures. By pressing , the recording prevention circuit 2 is turned OFF, so that the recording circuit 4 is kept ON without being affected by vibrations, and photography can be performed without any trouble.

It should be noted that the present invention is not limited to the embodiments described above, and for example, the inner contact of the vibration sensitive switch may be made spherical, or the outer contact may be made cylindrical.

(Effects of the invention) As explained above, according to the invention, since the recording prevention circuit having a vibration-sensitive switch is connected to the recording circuit, unnecessary recording due to forgetting to turn off the recording switch is prevented, and battery power is saved. It is possible to prevent wasteful use of video tapes.

Furthermore, since a release switch is provided, it is possible to turn off the recording prevention circuit in a situation where there is a lot of vibration, and to take pictures normally without being affected by the vibration.

Further, since the vibration sensitive switch is a mechanical combination of an outer contact and an inner contact swingably supported by an elastic support rod, it has a simple structure and good response to vibration.

[Brief explanation of the drawing]

The drawing is an explanatory diagram showing an unnecessary recording prevention device according to an embodiment of the present invention. A...Unnecessary recording prevention device, 1...Vibration sensitive switch, 11...Inner contact, 12...Outer contact, 1
3... Switch case (fixing member), 14... Elastic support rod, 15... Gap, 2... Recording prevention circuit,
3... Recording switch, 4... Recording circuit, 5...
Release switch, 6...control circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] 1) A recording prevention circuit having a vibration-sensitive switch is connected to a recording circuit that is turned on and off by the recording switch, and the recording circuit is connected to a recording circuit that is turned on and off by the recording switch. A control circuit is provided that turns off the recording circuit when the vibration sensitive switch is turned on and keeps the recording circuit off until the recording switch turns on the recording circuit, and the recording prevention circuit includes: The recording prevention circuit
A device for preventing unnecessary recording for a video camera, characterized by being provided with a manual release switch to turn it off. 2) The vibration sensitive switch has an inner contact and an outer contact surrounding the inner contact, the outer contact is fixed to a fixed member, and the inner contact is connected to the outer contact by an elastic support rod that is long in the axial direction of the outer contact. 2. The unnecessary recording prevention device for a video camera according to claim 1, wherein the device is swingably supported with a gap maintained therebetween.