JPH09163197A - Video camera equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record/reproduce an image accurately without being affected by heat by dissipating the heat generated from electronic components or the like in the inside of a video cassette main body efficiently without being stayed in the inside of the video cassette main body. SOLUTION: One end 28A of the equipment faces a heat generating source 9 and other end 28B is provided with a heat dissipation members 28A, 28B with a high heat conductivity extended along an outer circumferential face 4A of a battery container section 4 arranged to a side of an equipment main body 2. The heat generated from the heat generating source 9 is dissipated via the battery container section 4 parted from the inside of the equipment main body 2 with a heat dissipation member 28 and with a comparatively large surface area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact video camera device, and more particularly, to a video camera device in which heat generated from an electronic element or the like is efficiently dissipated.

[0002]

2. Description of the Related Art A video camera device with a built-in camera, which uses a tape cassette as a recording medium, has a tape cassette mounted therein and records and reproduces a photographed image signal and a necessary audio signal on a magnetic tape in which the tape cassette is housed. It is composed of a recording / reproducing unit and an imaging unit for imaging a desired subject.

Conventional video camera devices are large and heavy, and have been generally used for business purposes. However, the video camera device has been made smaller and lighter due to the use of an 8 mm video cassette, and video shooting has become possible with a simple operation, and the development of a consumer small video camera device has been rapidly advanced. ing. Along with this, the video camera device has been drastically reduced in size and weight, has improved portability, and has started to be popularized for consumer use.

[0004]

By the way, the video camera device is miniaturized and lightened according to the needs of the user and the mounting density is increased, but on the other hand, since the power consumption is not changed, There is a possibility that heat generated from a heat source such as an element may be trapped inside and adversely affect electronic circuits and tapes. In addition, the video camera device is made of plastic or the like having a low thermal conductivity in order to reduce the weight of the device body, and since air convection hardly occurs inside due to high-density mounting, the heat generated from the heat source is not generated. However, there is a problem in that the particles are not released to the outside and are more likely to stay inside the apparatus body, and the temperature locally rises inside the apparatus body.

For example, in electronic equipment and the like, slits for heat dissipation are appropriately provided in each part of the apparatus main body. However, in a video camera device, it is difficult to provide such a heat dissipation slit in appearance, and inconvenience easily occurs in terms of a dustproof action such as dust entering.
It cannot be adopted.

Therefore, the present invention was proposed in order to solve the above-mentioned problems, and the heat generated from electronic parts and the like is efficiently radiated without being trapped inside the apparatus main body. It is an object of the present invention to provide a video camera device which can record and reproduce images without being affected by heat and can achieve further miniaturization and thinning.

[0007]

In order to achieve the above-mentioned object, a video camera device according to the present invention has a battery housing in which one end is exposed to a heat source and the other end is arranged laterally. The heat dissipating member having a large thermal conductivity is provided along the outer peripheral surface of the portion.

Further, a grip cover formed of an elastic material is joined to the outer peripheral portion of the battery housing so as to surround the heat dissipation member.

In the video camera device constructed as described above, one end of the heat dissipation member is exposed to the battery housing part which is isolated from the inside of the device body and has a relatively large surface area. Since the heat generated from such things does not stay inside the device body, it is efficiently radiated,
Image recording / reproduction is performed without being affected by heat, and it is possible to further reduce the size and thickness.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.

In the portable video camera device 1 according to the embodiment, a recording / reproducing unit, which will be described later, is built in the device body 2 and an image pickup unit is provided. An 8 mm video cassette tape is used for the video camera device 1. For example, as shown in FIGS.
It has a horizontally long rectangle. An area extending from the front surface portion to the left side surface portion of the device main body 2 is formed in a substantially semi-cylindrical shape in the device main body 2 to form a battery storage portion 4 for storing the battery 3 serving as a power source therein. ing. In this specification, the front-rear, left-right, and up-down directions are used with the front side of the drawing as the front with reference to FIG.

As shown in FIG. 1, the video camera device 1 is provided with a lens 5 constituting an image pickup section at the right upper corner of the front surface of the apparatus body 2. The lens 5 is combined with the front portion of the lens barrel, the details of which are omitted, and the captured image enters the lens barrel. A diaphragm mechanism, a zoom mechanism, and the like are attached to the lens barrel, and an image conversion element (CCD) arranged at the rear end converts the incident image into a video image. This video image is displayed on the liquid crystal display 12 and recorded on a video tape by a recording operation.

As shown in FIG. 2, the video camera device 1 has a liquid crystal display 12 on the back surface of the device body 2 of the video camera device 1. The liquid crystal display 12 displays the image captured by the image capturing unit or the reproduced image.

The liquid crystal display 12 is rotatably attached to the apparatus main body 2 via a hinge mechanism 13 so that the position with respect to the apparatus main body 2 can be freely changed and the orientation of the liquid crystal display 12 can be changed. It is assembled. Therefore,
When taking a picture at a low angle, for example, the video camera device 1 makes the picture take easily by rotating the liquid crystal display 12 upward by about 45 degrees. Then, the liquid crystal display 12 is used as a finder when the video camera device 1 performs shooting, and is also used as a monitor for viewing a reproduced image.

The liquid crystal display 12 is provided with a plurality of display operation buttons 14 for operating the display screen on a plate-like arm portion provided between the hinge mechanisms 13. The display operation button 14 is used to adjust the color, brightness and noise of the screen of the liquid crystal display 12.

Further, the apparatus main body 2 is provided with an operation display section 15 in a substantially central region of the upper surface thereof. On the operation display unit 15, the set function is displayed by each operation button 16 described later. Therefore, it is easy to identify which function the video camera device 1 is used to operate.

A plurality of operation buttons 16 are provided in the vicinity of the operation display section 15. This operation button 16
Has a role of a play button, a record button, etc. for activating a recording / playback unit housed inside the apparatus main body 2. Therefore, for example, when a reproduction button, which is one of the operation buttons 16, is pressed and operated, the recording / reproducing unit inside the apparatus main body 2 is activated, and the image captured and recorded by the video camera apparatus 1 is displayed on the liquid crystal display. It is displayed on the display unit 12.

Further, in the main body 2 of the apparatus, a microphone portion 17 is arranged in a substantially central region on the upper side of the front surface. A stereo microphone (not shown) for collecting external sound is provided inside the microphone unit 17.

Then, the microphone body 1 is provided in the apparatus body 2.
7 and a recording lamp 18 near the image pickup lens 5, respectively.
Are arranged. The recording lamp 18 is turned on when recording a video image captured by the video camera device 1. Therefore, the recording lamp 18 facilitates identification of whether or not the video camera device 1 is recording.

Further, a plurality of second operation buttons 19 are arranged on the rear surface of the apparatus main body 2 between the liquid crystal display 12 and the right side surface portion. The second operation button 19 is, for example, an operation for displaying the date or the month and day on the image, a fade-in for gradually outputting the image and sound from the white screen or the mosaic screen, and a fade-out for muting the image and sound on the contrary. It is provided to do.

Since the second operation button 19 is arranged at the facing position where the grip portion 22 described later is provided, it supports the video camera device 1 when the video camera device 1 is used. The video camera device 1 can be operated easily with the hand opposite to the hand.

An external input terminal 20 for joining with an external device is provided on the right side surface of the apparatus main body 2 adjacent to the second operation button 19.

On the right side surface of the main body of the apparatus, a speaker 21 is provided above the external input terminal 20 so as to emit a sound signal reproduced by the recording / reproducing section.

Further, a cassette holder opening operation portion (not shown) is arranged at the substantially central portion of the bottom surface of the apparatus main body 2. The cassette holder opening operation section is provided so as to slide, and when it is slid, the internal locking means is released, and the substantially central portion of the bottom surface of the apparatus main body 2 is opened, so that the inside of the apparatus main body 12 is opened. The cassette holder provided is exposed. Then, in a state where the cassette holder is exposed, a tape cassette around which a magnetic tape having a width of 8 mm is wound is loaded into the cassette holder.

In the video camera device 1, the left side region of the front face of the device body 2 is formed to bulge into a substantially semi-cylindrical shape so that the side face region that straddles the left side face and the rear face is formed as the grip portion 22. It A grip cover 23 made of a rubber sheet is joined to the outer peripheral portion 4A of the battery housing portion 4 that constitutes the grip portion 22. Grip part 22
Allows the user to grip the video camera device 1 in a good state by the above-described configuration of the substantially semi-cylindrical bulge shape and the thickness of the device main body 2 and the non-slip action and fit of the grip cover 23. Has become.

A circular power supply / photographing switch 24 is disposed on the back side of the upper surface of the grip portion 22. The power / shooting switch 24 switches the video camera device 1 between two positions, a camera mode and a video mode, to start and end video shooting. Further, these various functions are displayed on the operation display unit 15.

A circular dial operation unit 24 is rotatably attached to the center of the upper surface of the battery storage unit 4. The dial operation unit 24 is a program selection dial for automatically performing recording according to the subject and the shooting condition.

A zoom operation section 26 is arranged above the front surface of the battery housing section 4. This zoom operation unit 26
Is driven left and right along the arc surface of the grip portion 22 to drive the zoom mechanism of the lens barrel described above.

In the video camera device 1, since the power switch 24 and the zoom operation unit 26 are arranged at positions where the thumb and forefinger can reach in a natural state when gripping the grip unit 22 by hand, It is possible to easily operate the video camera device 1. Further, the video camera device 1 can easily perform video shooting while watching the display screen of the liquid crystal display 12.

A grip belt 27 is arranged on the side surface of the grip portion 22. The grip belt 27 has both ends hooked on a pair of upper and lower hooking portions on the left side surface of the apparatus body 2, and is provided between the side surface formed on the grip portion 22 and the grip belt 27 from the back side of the apparatus body 2. The user grips by passing a hand through the formed space. Therefore, the user is
Since 2 is formed so as to have a bulge and is covered with the grip cover 23, the video camera device 1 can be handled in a stable state so that it can be easily gripped by the hand, and the side surface of the grip portion 22 and the grip belt 27 can be handled. The video camera device 1 can be easily carried because the video camera device 1 can be held simply by passing it through the space formed by.

As shown in FIG. 3, the video camera device 1 has a mechanical deck portion 7 in the center of the inside of the device body 2. The mechanical deck section 7 has a cassette holder for storing a tape cassette in which a magnetic tape having a width of 8 mm is stored, a tape drive mechanism and a loading mechanism for driving the magnetic tape of the stored cassette tape, and a magnetic tape is recorded. It comprises a magnetic head for reproduction, and a frame part for integrally mounting the cassette holder, the tape drive mechanism, the loading mechanism and the magnetic head.

In front of the mechanical deck section 7, an integrated circuit (I
C) and the DC-DC converter 9 and the like, and the digital board 8A and the analog board 8B are arranged to face each other.
Electric power is supplied to these circuit boards 8 from a power supply terminal 10 via a flexible cable 11.

When the cassette tape is mounted on the cassette holder and the standby operation is performed, the magnetic tape comes into contact with the magnetic head by being pulled out from the inside of the cassette tape. In this state,
When a recording / reproducing operation is performed, the magnetic tape is run by a tape drive mechanism.

By the way, the video camera device 1 of the present invention
Uses 7.2V DC to power the battery 3 when it is started up. In addition to this, various types of low voltage with little voltage fluctuation are required for electronic circuits such as ICs and LSIs. Therefore, the DC-DC converter 9 is provided on the circuit board 8. The DC-DC converter 9 is, for example, I
The voltage is converted into a predetermined voltage of 3.3V in the C system and 5V in the motor and supplied. . However, the DC-DC converter 9
When a DC voltage from the power supply terminal 10 is converted into a predetermined voltage, a conversion loss occurs and heat is generated.

The device main body 2 has the above-mentioned DC-
It has a heat source for generating heat from the DC converter 9, other ICs, motors, and the like. The heat generated from these heat sources is
There is a possibility that the temperature may locally rise inside the device body 2 made of plastic having a low thermal conductivity, and the temperature may locally rise inside the device body 2 to adversely affect the electronic circuit and the tape.

As described above, the video camera device 1 is a DC-DC device having a power supply circuit mounted on the circuit board 8, for example.
Since a large number of heat-generating components such as the converter 9 are provided and the whole is made small and thin, the constituent members, the circuit board, etc. are mounted in the device body 2 in high density. Almost no air convection occurs inside the main body 2.

Therefore, the video camera device 1 is provided with a heat dissipation plate 28 for efficiently dissipating the heat generated inside the device body 2. The heat dissipation plate 28 is formed of a thin copper plate having a high thermal conductivity, and is disposed along the front surface of the device body 2 between the circuit board 8 and the battery housing portion 4, as shown in FIGS. 3 to 5. It is set up.

That is, the heat dissipation plate 28 has one end 28
A is positioned to face the circuit board 8 on which a heat generation source such as a DC-DC converter 9 constituting the power supply circuit section is mounted, and the other end 28 is provided through a lead-out slit 29 provided on the front surface of the apparatus body 2. And is pulled out to the outside, and is joined so as to wrap around the outer peripheral portion 4A of the battery housing portion 4. The lead-out slit 29 is formed on the front surface of the device body 2 along the battery housing portion 4, and the heat radiating plate 28 is pulled out to the outside, and the one end portion 21A of the grip cover 21 is inserted and fixed.

The heat sink 28 is pulled out from the lead-out slit 29 and joined to the outer peripheral portion 4A of the battery housing portion 4, and the surface thereof is covered with the grip cover 21. The grip cover 21 is formed of a rubber sheet as described above, and one end of the grip cover 21 is a lead-out slit 29 as shown in FIG.
The lead-out slit 29 is closed by being inserted into. As described above, the heat dissipation plate 28 has the grip portion 2
Although it is joined to the outer peripheral surface 4 </ b> A of the battery housing portion 4 that forms part 2, the grip cover 21 covers the outer peripheral surface 4 </ b> A, so that the user does not feel uncomfortable.

As described above, in the video camera device 1, one end 28A is opposed to the circuit board 8 on which a large number of heat-generating components are mounted, and the other end 28B is pulled out to the outside of the main body 2 to accommodate the battery. By providing the heat dissipation plate 28 joined to the outer peripheral portion 4A of the portion 4, the heat generated inside the device body 2 is efficiently released to the outside.

The battery accommodating portion 4 has a space portion which is separated from the inside of the apparatus body 2 by being formed into a tubular shape as a whole, and is a portion relatively unaffected by heat from the inside of the apparatus body 2. Is. Further, the battery storage portion 4 is a portion that secures a relatively large surface area. Therefore, the video camera device 1 efficiently radiates heat by guiding the other end portion 28B of the heat radiating plate 28 to the outer peripheral portion 4A of the battery housing portion 4. The video camera device 1 has such a configuration that heat is dissipated from the inside of the device main body 2, so that there is no place where the temperature is locally high and the temperature can be made uniform. In the video camera device 1, heat generated from a heat source or the like is used in the device body 2
The inconvenience that the control parts are adversely affected by being confined inside is eliminated, and recording and reproduction of images in a good state are performed. In the above-described video camera device 1, a so-called viewfinder type video camera device in which a captured image is converted into an image and displayed on a large liquid crystal liquid crystal display has been shown, but the present invention is not limited to the video camera device according to the present invention. It goes without saying that the present invention is also applied to a finder type video camera device in which a finder is arranged at one end side of a lens barrel in which an imaging lens is incorporated.

Further, in the video camera device 1, the heat dissipation plate 28 made of copper is used, but it is not limited to this, and there is no problem as long as it is a material having high thermal conductivity, for example, silver,
It may be an alloy containing aluminum or copper.

[0043]

As is apparent from the above description, according to the video camera device of the present invention, the heat dissipating member is provided in the battery accommodating portion which is isolated from the inside of the device body and has a relatively large surface area. By facing one end, the heat generated from electronic parts does not stay inside the main body of the device and is efficiently dissipated, so that recording and reproduction of images can be performed without being affected by the heat. It is possible to make the device smaller and thinner.

[Brief description of the drawings]

FIG. 1 is a perspective view from the front side of a video camera device according to the present invention.

FIG. 2 is a perspective view from the back side of the video camera device according to the present invention.

FIG. 3 is an exploded perspective view of a main part of the front surface of the video camera device according to the present invention.

FIG. 4 is a perspective view illustrating a configuration of a heat dissipation member of the video camera device according to the present invention.

FIG. 5 is a vertical cross-sectional view of a main part of a video camera device according to the present invention.

[Explanation of symbols]

 1 Video Camera Device 2 Device Body 3 Battery 4 Battery Storage 8 Circuit Board 9 DC-DC Converter (Heat Source) 23 Grip Cover 28 Heat Sink 29 Derivation Slit

Claims (2)

[Claims] 1. A heat dissipating member having a large thermal conductivity, one end of which faces a heat source and the other end of which extends along an outer peripheral surface of a battery housing portion which is arranged laterally of the apparatus body. A video camera device characterized in that 2. The grip cover formed of an elastic material is attached to the outer peripheral portion of the battery housing so as to surround the heat radiating member. Video camera device.