JPH0946564A - Video camera device provided with liquid crystal display monitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video camera device provided with a liquid crystal display monitor capable of detecting whether or not the liquid crystal display monitor is connected to a video camera main body and controlling automatically a power supply state of the liquid crystal display monitor. SOLUTION: This video camera device provided with a liquid crystal display monitor in which the liquid crystal display monitor 2 capable of monitoring a photographed image or a reproduced image by the video camera is attached detachably to a video camera main body 1, and the liquid crystal display monitor 2 monitors a video image with the video camera main body 1 while being separated from the video camera main body 1 in terms of an infrared ray signal is provided with connection detecting terminals 38c, 23c and 38d, 23d detecting the presence of connection of a connector jack 38 and a connector plug 23 connecting the video camera main body 1 and the liquid crystal display monitor 2 so as to control on/off the power supply of the liquid crystal display monitor 2 with a signal from a control circuit 53 in response to the removal state of the liquid crystal display monitor 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes a liquid crystal monitor unit capable of monitoring a photographed image or a reproduced image by a video camera detachable from the main body of the video camera, and separates the liquid crystal monitor unit from the main body of the video camera. The present invention relates to a video camera device with a liquid crystal monitor capable of monitoring an image with an infrared signal between itself and the video camera main body in this state.

[0002]

2. Description of the Related Art Conventionally, many types of video camera devices having a liquid crystal monitor of this type have been proposed. This liquid crystal monitor is generally electrically connected to the back of the video camera body and supported so that the angle can be changed. However, there is one in which the liquid crystal monitor is detachable from the video camera body. .

However, the model in which the liquid crystal monitor can be separated from the main body of the video camera is separated from the main body of the video camera when shooting without using the liquid crystal monitor depending on the usage mode (TPO: Time Place Occasion) of the video camera device. This makes shooting easier. Therefore, the liquid crystal monitor removed from the video camera body does not have any function.

Therefore, the applicant of the present invention proposes a video camera device in which the liquid crystal monitor is separated from the video camera main body so that an image can be monitored with the video camera main body by an infrared signal. Proposed in No. 14469.

In this video camera device, the video camera body and the liquid crystal monitor each have a dedicated power source,
Even when the liquid crystal monitor is connected to the video camera main body, it is necessary to operate the power source of the video camera main body and the power supply of the liquid crystal monitor, which is troublesome.

Also, an infrared signal transmitting / receiving circuit when the liquid crystal monitor is detached from the video camera body and used, and a signal line circuit when the liquid crystal monitor is attached to the video camera body and used. It is necessary to change the operation, and similarly, the operation is troublesome.

Further, when the liquid crystal monitor is attached to the main body of the video camera for use, it is unnecessary to send and receive the infrared signal, so that the power supply of the sending and receiving circuits must be turned off.

The present invention has been made to solve the above-mentioned problems, and detects whether or not the liquid crystal monitor is connected to the video camera body, and automatically controls the power supply state of the liquid crystal monitor. It is an object of the present invention to provide a video camera device with a liquid crystal monitor that can be used.

Further, there is obtained a video camera device with a liquid crystal monitor capable of detecting whether or not the liquid crystal monitor unit is connected to the main body of the video camera and automatically switching between the infrared signal transmitting / receiving circuit and the signal line circuit. The purpose is to

[0010]

In order to achieve the above object, a video camera device with a liquid crystal monitor according to the first aspect of the present invention has a liquid crystal monitor unit capable of monitoring a captured image or a reproduced image by the video camera. A video camera device with a liquid crystal monitor that can be attached to and detached from the main body, and an image can be monitored by an infrared signal between the liquid crystal monitor and the video camera main body in a state of being separated from the video camera main body. The main body section has a function of detecting whether or not the liquid crystal monitor section is connected by the conductive connection section, and controls the power supply of the liquid crystal monitor section according to the attachment / detachment state of the liquid crystal monitor section.

With the liquid crystal monitor-equipped video camera device having the above-described structure, the power supply of the video camera main body is turned off while the liquid crystal monitor is attached to the main body of the video camera. The unit can detect and automatically turn off the power of the liquid crystal monitor unit.

Further, by connecting the liquid crystal monitor unit to the video camera main body unit from the use state in which the liquid crystal monitor unit is separated and the image signal from the video camera main unit unit is monitored by the infrared signal, the conductive connection is made. The unit can detect the infrared signal and automatically turn off the power of the receiving and transmitting circuits.

Further, in the video camera device with a liquid crystal monitor according to the second aspect of the present invention, the liquid crystal monitor unit capable of monitoring a picked-up image or a reproduced image by the video camera is attachable to and detachable from the main body of the video camera. Is a video camera device with a liquid crystal monitor that can monitor the image by infrared signals with the video camera main body in a state where it is separated from the video camera main body. With a function to detect at the connection part, the monitor image of the LCD monitor part is automatically converted into a signal line by the conductive connection part when the liquid crystal monitor part is attached to the video camera body part by the detection of the conductive connection part, and an infrared signal when it is removed. It is designed to be switched to.

With the liquid crystal monitor-equipped video camera device thus constructed, when the liquid crystal monitor unit is attached, it can be detected by the conductive connection unit and the video signal from the video camera main unit can be monitored by the signal line. it can. Further, when the liquid crystal monitor is detached, it can be detected by the conductive connecting portion and the video signal from the video camera main body can be monitored by the infrared signal.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a video camera device with a liquid crystal monitor according to the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the entire appearance of the video camera device as seen from the front side, and FIG. 2 is a perspective view of the overall appearance of the same as seen from the back side.

The video camera device comprises a video camera body 1 containing a video camera mechanism portion and a VTR mechanism portion, and a liquid crystal monitor 2 which is detachably supported on the back side of the video camera body 1. There is.

First, the structure of the video camera body 1 will be described. On the front upper part of the video camera body 1, a taking lens 3, a microphone 4, a zoom switching lens 5, a start /
There is a stop button 6 and a video camera operation and V
There is a power switch 7 that also serves as a switch for TR operation, and a viewfinder 8 and a speaker 9 are provided on the upper rear portion.

A hinge 10 is provided on a part of the video camera body 1.
There is a battery lid 11 that can be opened and closed with the fulcrum as a fulcrum, and a battery (not shown) that serves as a power source for the video camera device is housed inside. Further, the back of the video camera body 1 becomes a back lid 12, and the back lid 12 is opened by operating the knob 13, and the tape cassette can be taken in and out from a VTR mechanism portion (not shown) built in the video camera body 1. You can

Further, an infrared transmission / reception mechanism 14 for transmitting and receiving signals between the video camera body 1 and the liquid crystal monitor 2 using infrared rays is arranged at an upper part of one side of the video camera body 1. There is. The infrared transmitting / receiving mechanism 14 will be described in detail later.

The liquid crystal monitor 2 supported on the rear surface of the video camera main body 1 has a monitor main body portion 15 having a built-in circuit board and a liquid crystal screen on the rear surface side of the monitor main body portion 15. Liquid crystal panel unit 1 having 16
7, the power supply unit 18 of the monitor body 15 and the power supply unit 1
8 and a battery 19 as a power source connected to the battery 8.

FIG. 3 shows a perspective view in which the above-mentioned liquid crystal monitor 2 is separated from the video camera body 1, and FIG. 4 shows a mechanism for attaching and detaching the liquid crystal monitor 2 and the video camera body 1.

The monitor main body 15 and the liquid crystal panel 17 are rotatably coupled at the upper end thereof by a hinge 20, and the liquid crystal panel 17 is rotated with respect to the monitor main body 15 at a predetermined rotation with the hinge 20 as a fulcrum. It can be stopped at a moving angle. Also, the monitor body 15 and the liquid crystal panel 1
7 is electrically connected by a flexible substrate (not shown).

The monitor main body 15 has a pair of hooks 21 and 21 on the upper front surface thereof, and the lock pin 22 on the lower front surface of the monitor main body portion 15. The lock pin 22 has a flat surface only in the lower portion thereof. The reduced diameter portion 22a is formed. Further, on the front surface of the monitor main body portion 15, a connector plug 23 as a conductive connecting portion composed of multiple terminals, and further,
The remote control signal light emitting element 24 is provided at another position.

On the other hand, the monitor main body 15 is provided with an infrared light receiving element 25. The infrared light receiving element 25 is rotatable in a free angle direction by a universal joint 27 supported on the monitor body 15 via a bracket 26. Reference numeral 28 is a cord that electrically connects the monitor body 15 and the infrared light receiving element 25.

In addition, the power supply unit 1 with respect to the monitor main body unit 15
Reference numeral 8 is fixed integrally, and a lock knob 29 for attaching and detaching the above-mentioned battery 19 to the housing portion on the back side of the power source unit 18 as shown in FIG. 2, and lights when the battery 19 is sufficiently usable. In addition, an indicator lamp 30 that blinks when the remaining amount is low and a brightness adjustment dial 31 for the liquid crystal screen 16 are provided.

Further, on the lower rear portion of the monitor main body portion 15, an LCD monitor display ON / OFF switch 32 and a start / stop button 3 for video shooting by the video camera main body 1 are provided.
3 and a zoom button 34.

In the liquid crystal monitor 2 having the above-described structure, when the monitor main body 15 is connected to the video camera main body 1, the hook portion 21 above the monitor main body 15 is attached to the video camera main body 1.
The lock pin 22 is arranged inside the lock hole 36 by inserting the lock pin 22 into the lock hole 36 provided on the back surface of the video camera body 1 while engaging with the recess 35 formed in the back surface of the video camera body 1. Snap spring 3 as shown in FIG.
The reduced diameter portion 22a of the lock pin 22 is engaged with 7 and can be mechanically coupled.

At this time, the connector plug 23 is inserted into the connector jack 38 as a conductive connecting portion provided on the video camera main body 1 side to electrically connect the monitor main body 15 and the video camera main body 1. You can still,
When the monitor main body 15 is connected to the video camera main body 1, the lower flat portion of the lock pin 22 is brought into contact with the bottom of the lock hole 36, so that the monitor main body 15 is prevented from rattling up and down and the connector plug. It is possible to avoid damage to the connector 23 and the connector jack 38 and electrical contact failure.

Next, the detailed structure of the infrared transmitting / receiving mechanism 14 will be described with reference to FIG. A cylindrical outer cylinder 40 is fixed in the container 39 that constitutes the housing.
An elevating cylinder 41 that can move up and down is housed inside. A guide hole 40a formed in the outer cylinder 40 from the elevating cylinder 41
An arm piece 42 is provided to project through.

The elevating cylinder 41 is provided with a light guide member 43 made of acrylic resin or the like, and two infrared emitting LED elements 44 arranged in parallel on the upper part of the light guide member 43. The light guide member 43 has an infrared incident window 43a facing the same direction as the LED element 44 below the infrared emitting LED element 44 on the upper front side, and a reflecting surface 43b for reflecting the infrared ray incident from the incident window 43a at a right angle. The bottom surface has an emission window 43c through which infrared rays reflected by the reflection surface 43b are emitted.

These light guide members 43 and infrared emitting LEDs
The element 44 includes an entrance window 43 a and an exit window 43 a of the light guide member 43.
c and the infrared emitting LED element 44 are covered with a light-shielding cover so that the tip of the LED element 44 is exposed to form a transmitting / receiving section 45.
The transmitter / receiver 45 is fitted to the elevating cylinder 41 at the fitting portion 46 in the circumferential direction, so that the infrared light emitting LED element 44 and the light guide member 43 described above together with the transmitter / receiver 45 form a circle with the fitting portion 46 as a rotating portion. It can rotate in the circumferential direction.

A coil spring 47 is stretched between the bottom of the elevating cylinder 41 and the bottom of the outer cylinder 40. The spring force of the coil spring 47 causes the elevating cylinder 41 and the transmitter / receiver 4 to cooperate with each other.
Infrared light emitting LED element 44 and light guide member 43 covered with 5
Is pushed up, and the infrared emitting LED element 44 and the entrance window 43a of the light guide member 43 project from the opening window 39a on the upper surface of the container 39. That is, when the head portion of the transmitter / receiver portion 45 protruding from the opening window 39a of the container 39 is pushed down against the spring force of the coil spring 47, the elevating cylinder 41 is locked in a pushed state by a lock mechanism (not shown), and infrared rays are emitted. The light emitting LED element 44 and the entrance window 43a of the light guide member 43 are hidden inside the opening window 39a of the container 39. When the head of the transmitter / receiver 45 is pushed again from this state, the lock mechanism of the elevating cylinder 41 is released and infrared rays are emitted. The so-called push-push type locking mechanism in which the LED element 44 and the entrance window 43a of the light guide member 43 project again from the opening window 39a of the container 39.

On the other hand, there is a wiring board 48 at the bottom of the container 39. The wiring board 48 has a remote control light receiving unit 4
9 is provided, and the remote control signal light receiving element 50 has a remote control signal light receiving element 50 at a position facing the incident window 43a of the light guide member 43 described above. Further, the cord 44 a drawn from the above-mentioned infrared emitting LED element 44 is wired in a predetermined circuit of the wiring board 48. Further, a micro switch 51 is arranged on the wiring board 48 at a position corresponding to the arm piece 42 of the outer cylinder 40 described above.

Infrared transmitter / receiver 14 constructed in this way
Is attached to the video camera main body 1 via a rotating means 52. The rotating means 52 is not shown in detail, but the infrared transmitting / receiving mechanism 14 is rotated with respect to the video camera main body 1 only in the vertical direction. It may be configured to freely rotate in the horizontal direction as well as in the vertical direction as needed. Of course,
The infrared transmitting / receiving mechanism 14 and the video camera body 1 are electrically connected to each other through the turning means 52.

FIG. 7 shows an example of the circuit configuration of the video camera body 1 and the liquid crystal monitor 2 described above. In FIG. 7, the same parts as those shown in FIGS. 1 to 6 are designated by the same reference numerals.

In the video camera body 1, the control circuit indicated by reference numeral 53 controls the power supply circuit 55 to which the battery 54 is connected, and the power is supplied to the mechanical deck 56 and the like. The control circuit 53 is connected to an infrared emitting LED element 44 via a mechanical deck 56, a connector plug 38, a video / audio signal recording / reproducing circuit 57, and an infrared transmitting circuit 58, and the control circuit 53 is a remote control light receiving unit 49. The remote control signal from the remote control signal light receiving element 50 and the operation signal from the button group such as the start / stop button 6 are input.

The video / audio signal recording / reproducing circuit 57 is connected to the mechanical deck 56, and the video and audio signals from the video / audio signal recording / reproducing circuit 57 are transmitted by the infrared transmitting circuit 58.
And to the connector jack 38.

The subject image from the lens 3 of the video camera body 1 is converted into a video signal by the CCD camera 59 and input to the video / audio signal recording / reproducing circuit 57 via the amplifier 60 and the video signal processing circuit 61. It further,
The audio input to the microphone 4 is input to the video / audio signal recording / reproducing circuit 57 via the amplifier 62 and the audio signal processing circuit 63.

Further, the connector jack 38 is a control signal from which a video / audio signal recording / reproducing circuit 57 outputs a video / audio signal output video / audio signal output terminal 38a and a control circuit 53 outputs a control signal. The output terminal 38b is provided with connection detection terminals 38c and 38d for detecting a connection state with the liquid crystal monitor 2 and a ground terminal 38e.

On the other hand, the control circuit 64 of the liquid crystal monitor 2 controls the power supply circuit 65 to which the battery 19 is connected, and the power is supplied to the liquid crystal drive circuit 66 and the like. The control circuit 64 has a liquid crystal display circuit 1 through a liquid crystal drive circuit 66.
6 and a backlight 68 via a backlight drive circuit 67, and the liquid crystal screen 16 is illuminated by the backlight 68.

Further, a connector plug 23 is connected to the control circuit 64, and the connector plug 23 is an image from the video / audio signal recording / reproducing circuit 57 of the video camera body 1 and an image for inputting an audio signal to the liquid crystal screen 16. , An audio signal input terminal 23a, a control signal input terminal 23b for inputting a control signal from the control circuit 53, connection detection terminals 23c and 23d for detecting a connection state with the video camera body 1, and a ground terminal 23.
e.

Further, the infrared light receiving element 25 of the liquid crystal monitor 2
Is connected to the infrared receiving circuit 69. The liquid crystal driving circuit 66 includes an infrared receiving circuit 69, a video / audio signal input terminal 2
3a, and the changeover switch 70 is changed over by a signal from the control circuit 64.

Further, the remote control signal light emitting element 24 and the control circuit 64 are controlled by operation signals from operation buttons such as the start / stop button 33.

Next, the operation of the present invention will be described. When the liquid crystal monitor 2 is connected to the video camera body 1, the connector plug 23 of the liquid crystal monitor 2 and the connector jack 38 of the video camera body 1 are electrically connected. By connecting the connector plug 23 and the connector jack 38, the connection detection terminals 38c and 2
The control circuit 53 of the video camera main body 1 detects the state in which 3c is connected, and an infrared light emission L is transmitted via the infrared transmission circuit 58 by a signal from the control circuit 53.
The ED element 44 is not driven, and the video and audio signals are output from the video and audio signal output terminal 38a.

On the other hand, the state where the connection detection terminals 23d and 38d are connected is the control circuit 6 of the liquid crystal monitor 2.
4 detects and the signal from the control circuit 64 causes the changeover switch 70 to switch to the video / audio signal input terminal 23a side.

As a result, the video and audio signals during video recording or playback are input from the video and audio signal output terminal 38a on the video camera body 1 side to the video and audio signal input terminal 23a on the liquid crystal monitor 2 side to drive the liquid crystal. The liquid crystal screen 16 is displayed on the monitor by the circuit 66 and can be used as a normal usage mode of the video camera device.

In the above-described normal use state, the video camera body 1 and the liquid crystal monitor 2 are connected to the control signal output terminal 38b and the control signal input terminal 23b, so that the power supply circuit 5 on the video camera body 1 side is connected.
5 and the power supply circuit 65 on the liquid crystal monitor 2 side are connected, so that the batteries 54 and 19 are commonly supplied to the video camera body 1 and the liquid crystal monitor 2. However, when the voltage values of the batteries 54 and 19 are extremely different from each other, a so-called known shutdown circuit that drops the battery voltage having a high voltage value may be provided.

Further, the control circuit 53 of the video camera main body 1 monitors the power states of the video camera main body 1 and the liquid crystal monitor 2, and when the power switch of the video camera main body 1 side is turned off, this off state is set. The signals are control signal output terminal 38b and control signal input terminal 2
The control circuit 64 on the liquid crystal monitor side is controlled via 3b, and the power switch on the liquid crystal monitor 2 side is automatically turned off. Although the power switch of the video camera body 1 and the liquid crystal monitor 2 are provided independently,
When the video camera body 1 and the liquid crystal monitor 2 are connected, the state of the power switch of the video camera body 1 is prioritized.

When the power source of the video camera body 1 is on, for example, in the camera mode or the video mode, the power source of the liquid crystal monitor 2 is manually turned on by the power switch.

Next, a case where a video image is displayed on the liquid crystal monitor 2 while the liquid crystal monitor 2 is mechanically separated from the video camera body 1 will be described.

When the liquid crystal monitor 2 is separated from the video camera body 1, the connection detection terminal 38 on the video camera body 1 side.
The control circuit 53 detects that the connection detection terminal 23c on the liquid crystal monitor 2 side is not connected to c, and the control circuit 53 activates the infrared emitting LED element 44 via the infrared transmitting circuit 58.

On the other hand, on the LCD monitor 2 side, the connection detection terminal 2
The control circuit 64 detects that the connection detection terminal 38d on the video camera body 1 side is not connected to 3d, and by this, the changeover switch 70 can be switched to the infrared reception circuit 69 side by a signal from the control circuit 64. , Drives the infrared light receiving element 25.

For example, as shown in FIG. 6, the video camera body 1 and the liquid crystal monitor 2 face the infrared light emitting LED element 44 on the side opposite to the video shooting direction of the video camera body 1, and the infrared light emitting LED element 44 is directed to The infrared light receiving elements 25 of the liquid crystal monitor 2 are made to face each other.

Thus, by operating the start / stop button 33 of the operation button group of the liquid crystal monitor 2 and the liquid crystal monitor display on / off switch 32,
The infrared signal encoded is the remote control signal light emitting element 2
Light is emitted from 4. This infrared signal enters the remote control signal light receiving element 50 through the entrance window 43a of the infrared transmitting / receiving mechanism 14 of the video camera body 1. Here, the infrared signal is decoded into an electric signal and input by the control circuit 53, and the video from the video / audio signal recording / reproducing circuit 57,
The sound signal is encoded into an infrared signal and the infrared light emission LE
An infrared signal is emitted from the D element 44, and is emitted by the infrared light receiving element 25 of the liquid crystal monitor 2. Then, this infrared signal is decoded into an image and audio signal by the infrared receiving circuit 69, passes through the liquid crystal drive circuit 66, and is displayed on the liquid crystal screen 16.
The video and audio signals can be displayed on the monitor. still,
Video / audio signal recording / playback circuit 57 for video shooting
A video signal can be recorded by driving the mechanical deck 56 by a signal from the.

As described above, the video camera device with the liquid crystal monitor of the present invention is provided with the connector jack 38 and the connector plug 23, which are the attachment / detachment portions of the video camera body 1 and the liquid crystal monitor 2, and the connection detection terminals for detecting the attachment / detachment state. As a result, there is an advantage that the power supply state of the liquid crystal monitor 2 attached to the video camera body 1 can be automatically controlled.

Further, when the liquid crystal monitor 2 is attached, the circuit power of the infrared light emitting LED element 44 of the video camera body 1 and the infrared light receiving element 25 of the liquid crystal monitor 2 side is automatically cut off to save the power consumption. It has the advantage that

Further, in the video camera device with the liquid crystal monitor of the present invention, the connector jack 38 and the connector plug 23, which are detachable parts of the video camera body 1 and the liquid crystal monitor 2, are attached.
Since the connection detection terminal for detecting the attachment / detachment state is provided, the signal automatically changes to the signal by the signal line when the video camera body 1 and the liquid crystal monitor 2 are used for connection and the infrared signal when the liquid crystal monitor 2 is removed. There is an advantage that you can.

The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.

In the embodiment, the case where infrared rays are used as a signal for transmission / reception between the video camera body 1 and the liquid crystal monitor 2 has been described, but other signals may be used for transmission / reception.

[0061]

As described above, in the video camera device with a liquid crystal monitor according to the present invention, the video camera body has a function of detecting whether or not the liquid crystal monitor is connected by the conductive connection portion, and the liquid crystal monitor is attached or detached. Since the power supply of the liquid crystal monitor is controlled according to the state, it is possible to automatically control the power supply state of the liquid crystal monitor that is attached to the video camera body, and to improve the operability of the video camera device. There is an effect that can be extremely improved.

When the liquid crystal monitor is attached,
It is possible to automatically cut off the circuit power supply of the infrared transmitter of the video camera main body and the infrared receiver of the liquid crystal monitor 2 side to save the power consumption.

Further, in the video camera device with a liquid crystal monitor according to the present invention, the video camera body has a function of detecting whether or not the liquid crystal monitor is connected by the conductive connecting portion, and the monitor image of the liquid crystal monitor is displayed by the conductive connecting portion. When the LCD monitor is attached to the video camera body, the signal line by the conductive connection and the infrared signal are automatically switched when the LCD monitor is removed, so the signal type can be changed manually depending on the usage of the LCD monitor. Without switching
There is an effect that the usability of the video camera device can be dramatically improved.

[Brief description of drawings]

FIG. 1 is an external perspective view of a video camera device with a liquid crystal monitor as viewed from the front.

FIG. 2 is an external perspective view of a video camera device with a liquid crystal monitor as viewed from the back.

FIG. 3 is a perspective view of a liquid crystal monitor.

FIG. 4 is a configuration diagram of a mechanism for attaching and detaching a video camera body and a liquid crystal monitor.

FIG. 5 is a sectional view of an infrared transmitting / receiving mechanism.

FIG. 6 is a perspective view of a video camera main body and a liquid crystal monitor in a separated use state.

FIG. 7 is a block circuit diagram of a video camera body and a liquid crystal monitor.

[Explanation of symbols]

 1 Video camera main body 2 Liquid crystal monitor 16 Liquid crystal screen 19 Battery 23 Connector plug 23a Video and audio signal input terminal 23b Control signal input terminal 23c, 23d Connection detection terminal 24 Remote control signal light emitting element 25 Infrared light receiving element 38 Connector jack 38a Video and audio signal Output terminal 38b Control signal output terminal 38c, 38d Connection detection terminal 44 Infrared light emitting LED element 50 Remote control signal light receiving element 53 Control circuit 54 Battery 55 Power supply circuit 57 Video / audio signal recording / reproducing circuit 58 Infrared transmission circuit 64 Control circuit 65 Power supply circuit 66 Liquid crystal drive circuit 69 Infrared receiver circuit 70 Changeover switch

Claims (3)

[Claims] 1. A liquid crystal monitor unit capable of monitoring an image taken by a video camera or a reproduced image is detachably attached to the video camera main unit, and the liquid crystal monitor unit is separated from the video camera main unit. In a video camera device with a liquid crystal monitor capable of monitoring an image with an infrared signal from the video camera body, the video camera body has a function of detecting whether or not the liquid crystal monitor is connected by a conductive connection portion. A video camera device with a liquid crystal monitor, characterized in that the power source of the liquid crystal monitor unit is controlled according to the attachment / detachment state of the liquid crystal monitor unit. 2. A liquid crystal monitor unit capable of monitoring an image picked up by a video camera or a reproduced image is detachably attached to the video camera main unit, and the liquid crystal monitor unit is separated from the video camera main unit. In a video camera device with a liquid crystal monitor capable of monitoring an image with an infrared signal from the video camera body, the video camera body has a function of detecting whether or not the liquid crystal monitor is connected by a conductive connection portion. The monitor image of the liquid crystal monitor section is automatically switched to a signal line by the conductive connection section when the liquid crystal monitor section is attached to the video camera body section and an infrared signal when the liquid crystal monitor section is removed by detecting the conductive connection section. A video camera device with an LCD monitor characterized by: 3. The video camera device with a liquid crystal monitor according to claim 1, wherein when the liquid crystal monitor unit is attached to the video camera body, the circuit power of the infrared signal transmitting unit and the infrared signal receiving unit is turned off. Video camera device with LCD monitor.