JPH03270575A - Power supply device - Google Patents

Abstract

PURPOSE:To supply power continuously by fitting an accessory to a battery mount section removably and mounting at least two batteries removably to the accessory so as to device the power supply such that one battery is selected when other battery is worn. CONSTITUTION:Batteries 10 are fitted respectively to a couple of battery mount parts 21b, 21b of a video light 21 fitted to a battery mount part 2a of a VTR main body 2 so that other battery 10 is automatically selected when one battery 10 is worn. Thus, the power is continuously supplied to the VTR main body 2 and the video light 21, consecutive shot is attained and the operation convenience is much improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power supply device used in video tape recorders, cameras, and the like.

[Summary of the Invention] The present invention provides a power supply device for supplying power to a video tape recorder and/or camera from a battery, in which accessory parts are detachably attached to the battery mounting portion of the video tape recorder and/or camera. By attaching at least two removable batteries to this accessory and automatically switching to the other battery when one battery runs out, it is possible to provide power to the video tape recorder and/or camera and the accessory. It is designed to be continuously supplied.

[Prior Art] For example, a small, easily portable VTR with an integrated camera has a removable battery attached to the VTR body.
Power is now supplied to the VTR itself. To explain this in detail with reference to FIG. 3, reference numeral 1 denotes a camera-integrated VTR, and a battery 1.0 is detachably attached to a battery attachment 112a provided on the back of the VTR main body 2. In addition, a video light 20 as an accessory for indoor or night photography is detachably attached to the top side of the VTR body 2 via a shoe 21 for attaching accessories attached to the top of the VTR body 2. A battery IO is also detachably attached to a battery attachment IE 20a provided on the back of the video light 20.

[Problems to be solved by invention E] However, in the conventional camera-integrated VTR1, the VT
Only one battery IO is attached to the R main unit 2, and the shooting time is determined by the lifespan of the battery 10. If the battery IO is completely exhausted, shooting will be temporarily interrupted and another battery IO will be installed. I had to replace it with a new one, and couldn't shoot continuously.

In addition, a battery I
O is attached to supply power to each separately. For example, if the battery 10 on the VTR main body 2 side is completely exhausted, the battery 10 on the video light 20 side is automatically connected to the VTR main body 2 side. Since there is no function to switch the supply to the VTR body 2, remove the exhausted battery 10 from the VTR main unit 2, and if there is no spare battery IO or a spare battery IO, remove the battery 10 from the video light 20 and replace it. Therefore, the work of replacing the battery 10 was complicated and the usability was very poor.

Accordingly, the present invention provides a video tape recorder capable of continuously supplying power to the video tape recorder and/or camera and its accessories by automatically switching to the other battery when one of at least two batteries is exhausted. and/or provides a power supply device for a camera.

[Means for solving the problem] An accessory is detachably attached to the battery attachment part of a video tape recorder and/or a camera, and at least two batteries are detachably attached to the accessory, so that one of the batteries is depleted. Then you can switch to the other battery.

[Operation] When one of the at least two batteries is exhausted, it is automatically switched to the other battery, so that the video tape recorder and/or camera and its accessories are each continuously supplied with power.

[Example] Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a camera-integrated VTR to which the power supply device of this embodiment is applied, and the back of its main body 2 is a battery mounting portion 2a. This battery mounting portion 2a is composed of a bottle-shaped child terminal 3, a terminal 4, and the like. A video light (accessory part) 21 is attached to the battery mounting portion 2a of the VTR main body 2.
The video light 21 can be detachably attached to the video light 21 by means of engagement and locking portions (not shown) formed on the video light 21 and the video light 21, respectively. By attaching the video light 21 to the battery attachment part 2a of the VTR body 2, the child terminal 3.4 of the battery attachment part 2a and the pair of spring-shaped metal plates 22.22 on the front side of the video light 2I are connected to each other. are in contact with each other. This video light 2I has a light section 21a on the front upper side, and a pair of battery attachments 1<21b on the upper and lower rear sides.

It has become 21b. Each of these batches, Riichi attachment part 21
The battery 10 is attached to each battery mounting part 2 in b and 21b.
The battery 1b and the battery 10 can be detachably attached to each other by means of engagement and locking parts (not shown) formed on the battery 10, respectively. Each of the batteries 10 may be of either a rechargeable back type or a case type with a plurality of built-in dry batteries, and can be attached to the pair of battery attachment parts 21b, 21b of the video light 21. + of part 21b.

The terminals 23 and 24 are in contact with each pair of spring-shaped metal plates II and 11 of each of the batteries 1O, so that power can be supplied to the VTR main body 2 and the video light 21, respectively. . 1. Also, a switch 25 is provided on one side of the video light 21 to turn on/off the light of the light section 21a, and the video light 2I is connected to the V by a connection cord 26 and its plug 27.
It is connected to the remote terminal 5 of the TR main body 2. and,
The video light 21 has a built-in power supply device 30. The circuit of this power supply device 30 is shown in FIG. This power supply device 30 includes a control circuit 31 that reads a battery down signal from the remote terminal 5 of the VTR main body 2;
This control circuit 31 automatically switches to the other battery 10 when one battery IO is exhausted, and also includes a relay circuit 32 and the like that lights up the light emitting diode 33 when the battery is down.

Furthermore, when one battery IO is depleted, the battery down display will begin to flash on the electronic viewfinder 6 provided on the VTR body 2 side, and the above display will disappear when the other battery 10 is automatically switched. By looking at the icon, the user can easily know that the battery IO has been automatically switched.

According to the above embodiment, the batteries 10 are respectively attached to the pair of battery attachment parts 21b, 21b of the video light 21 attached to the battery attachment part 2a of the VTR main body 2, and when one battery 10 is exhausted, the other battery 10 is VT
Power can be continuously supplied to the R main body 2 and the video light 21, enabling continuous shooting, further improving usability.

In this way, even if one battery IO is completely exhausted, the VTR will automatically switch to the other battery IO.
Since power is continuously supplied to the main body 2 and the video light 2I, even when replacing one exhausted battery 10, the power can be supplied to the VTR main body 2 and the video light 21 from the other battery 10 without temporarily interrupting shooting. It can be supplied continuously, and by alternately replacing the battery lO, it becomes possible to take continuous photographs for an extremely long time.

Further, the video light 21 has a function as a battery holder in addition to the function of illumination.

In the above embodiment, the power supply device is applied to a camera-integrated VTR, but the power supply device is not limited to this, and can be applied to cameras such as video tape recorders and still cameras for recording and/or playback. Of course it can be done.

2 is a schematic diagram of a camera-integrated VTR, FIG. 2 is a circuit diagram of a power supply device, and FIG. 3 is a schematic diagram of a conventional camera-integrated VTR.

l...Camera integrated VTR, 10, battery 21
・Video light (accessory parts), 30 Power supply device.

[Effects of the Invention] As described above, according to the present invention, an accessory part is detachably attached to the battery attachment part of a video tape recorder and/or a camera, and at least two batteries are detachably attached to the accessory part. In addition, when one battery is exhausted, it is possible to switch to the other battery, so that power can be continuously supplied to the video tape recorder and/or camera and the attached parts.

[Brief explanation of drawings]

Claims (1)

[Claims] (1) Attach an accessory part removably to the battery attachment part of the video tape recorder and/or camera, and attach at least two batteries to the accessory part in a removable manner, and when one battery runs out, switch to the other battery. A power supply device characterized by being flexible.