JP2000295505A - Video camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video camera that effectively emits sound from a speaker with a sufficient volume in an operating mode of the video camera where a liquid crystal display panel is contained in a liquid crystal display panel container and monitored while its liquid crystal display screen is exposed to the outside of the camera. SOLUTION: A biaxial hinge mechanism 2 raises/falls down and turns a liquid crystal display panel 3 externally mounted on a video camera main body 1, a liquid crystal display panel container section 4 of the video camera main body section 1 that contains the liquid crystal display panel 3 has a speaker opening 5, the biaxial hinge mechanism 2 supports the liquid crystal display panel 3 downward at the video camera main body 1. When the liquid crystal display panel 3 is not in use, the liquid crystal display panel 3 covers the speaker opening 5. When the liquid crystal display panel 3 is monitored, the speaker opening 5 is communicated externally via a sound path 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera apparatus having a liquid crystal display panel capable of undulating and reversing operations, and more particularly, to a video camera apparatus having a liquid crystal screen facing the front side in a liquid crystal panel storage section of a video camera body. In the use state of the monitor operation, a sound emission passage is secured so that sound from a speaker can be emitted with a sufficient volume.

[0002]

2. Description of the Related Art Hitherto, various types of video camera apparatuses provided with an external liquid crystal display panel of, for example, 2 to 3 inches, which can be raised and lowered and inverted by a biaxial hinge mechanism have been proposed. The angle of the liquid crystal display panel is set in accordance with various video shooting modes, so that video shooting can be performed while watching the video projected on the liquid crystal screen, or the recorded video can be monitored by the liquid crystal display panel.

[0003] When the liquid crystal display panel is not used,
The video camera is stored in the LCD panel storage on the side of the video camera body with the LCD screen on the back.

On the other hand, as a further different use example of the liquid crystal display panel, it is possible to monitor a recorded image while the liquid crystal screen is stored in a liquid crystal panel storage section of a video camera main body with the liquid crystal screen facing up.

Here, an example of a conventional video camera device will be described with reference to FIGS. FIG. 12 is a perspective view of the video camera device, and FIG. 13 is a side view of the video camera device as viewed from the liquid crystal display panel side.

A video camera main body is denoted by reference numeral 1, and a liquid crystal display panel 3 is mounted on the video camera main body 1 with a biaxial hinge mechanism 2 rotatable in the X-axis and Y-axis directions shown in FIG. The liquid crystal display panel 3 normally performs video shooting while viewing the image projected on the liquid crystal screen 3a in the upright position as shown in FIG. In addition, the liquid crystal display panel 3 can be flipped by 180 ° in the upright position. In this rotated state, the liquid screen 3a faces the photographing side, so that the video photographing or the photographing can be performed while showing the image to the subject. The user himself can take a video while watching the image.

When the liquid crystal display panel 3 is not used, the liquid crystal display panel 3 is stored in the liquid crystal panel storage section 4 with the liquid crystal screen 3a on the back side. Further, as shown in FIG. 13, the liquid crystal display panel 3 can be stored in the liquid crystal panel storage section 4 with the liquid crystal screen 3a facing upward, and the video recorded in this storage state can be monitored.

[0008]

By the way, in this kind of video camera apparatus, various switches for operating the video camera are arranged on the storage surface of the liquid crystal panel storage section 4 and a speaker for audio is provided. Are provided.

When the sound emitting opening 5 is used in a position where the liquid crystal display panel 3 is in the upright state as shown in FIG. 12, the sound emitting opening 5 is not blocked at all, and is generated from the speaker. In the usage mode in which the recorded image is stored in the liquid crystal panel storage section 4 and the recorded video is monitored as shown in FIG. 5 is blocked, so that there is a problem that the volume is reduced and the sound becomes difficult to hear.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem. Even in a usage mode in which a liquid crystal screen is stored in a liquid crystal panel storage unit with a liquid crystal display on the front side and monitored, sound generated from a speaker can be sufficiently obtained. It is an object of the present invention to obtain a video camera device that can effectively emit sound with a high volume.

[0011]

In order to achieve the above object, a video camera apparatus according to the present invention provides a speaker system which emits sound when a liquid crystal display section is stored in a liquid crystal panel storage section with a liquid crystal screen facing up. A sound emission passage communicating with the opening is provided.

As one means of the sound emission passage, the liquid crystal display panel is supported to be biased up or down with respect to the biaxial hinge mechanism, so that the liquid crystal display panel is turned upside down in the liquid crystal panel storage section. When stored, the sound emission opening of the speaker in the liquid crystal panel storage is exposed, and the sound generated from the sound emission opening can be emitted to the outside with sufficient volume through the sound emission passage.

As another means of the sound emission passage, the sound emission opening of the speaker is arranged at a position protruding from the liquid crystal panel storage portion of the liquid crystal display panel, and when the liquid crystal display portion is not used, the sound emission opening is formed from the liquid crystal display panel. The sound emission opening of the speaker is hidden by the extended cover piece. Thereby, when the liquid crystal display panel enters the monitor operation state, the sound emission opening of the speaker is exposed, and this can be emitted outside with a sufficient volume through the sound emission passage of the sound generated from the sound emission opening. .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a video camera device according to the present invention will be described with reference to the drawings. still,
The same components as those of the conventional video camera device shown in FIGS. 12 and 13 are denoted by the same reference numerals and described.

FIG. 1 is a side view of a video camera apparatus according to an embodiment of the present invention, in which a liquid crystal display panel is stored in a liquid crystal panel storage section with its liquid crystal screen on the back side when viewed from the liquid crystal display panel side. FIG. 2 is a rear view of the video camera apparatus viewed from the finder side, and FIG. 3 is a view of the monitor operating state in which the liquid crystal display panel is stored in the liquid crystal panel storage section with the liquid crystal screen facing up, as viewed from the liquid crystal display panel side. FIG. 4 is a side view of the video camera device, and FIG. 4 is a rear view of the video camera device similarly viewed from the finder side.

The liquid crystal display panel 3, which is mounted externally on the video camera body 1, is supported by a biaxial hinge mechanism 2 which is rotatable in the X-axis and Y-axis directions at a portion deviated downward from the center. Inverting and reversing operations are possible.

On the other hand, the sound emission opening 5 of the speaker 6 provided in the liquid crystal panel housing 4 is arranged above the housing surface. Therefore, in the non-use state in which the liquid crystal display panel 3 is stored in the liquid crystal panel storage section 4 with the liquid crystal screen 3 a on the back side, the sound emission opening 5 of the speaker 6 is completely closed by the liquid crystal display panel 3.

When the liquid crystal display panel 3 is turned to the monitor operation state in which the liquid crystal screen 3a is turned upside down and stored in the liquid crystal panel storage section 4, the liquid crystal display panel 3 is biased and supported by the biaxial hinge mechanism 2. 3 and 4
As shown in FIG. 7, a part of the liquid crystal panel housing 4 can be seen above the liquid crystal display panel 3, so that a part of the sound emission opening 5 of the speaker 6 is exposed and the sound emission opening 5 emits sound. The passage 7 allows communication with the outside. At this time, the liquid crystal display panel 3 has the upper corner on the back side formed into a large round shape 3b and cut out, so that the entire sound emission opening 5 is opened and communicates with the sound emission passage 7.

As described above, in the video camera device according to an example of the present invention, in the monitor operation state in which the liquid crystal screen 3a is turned over to the front side and housed in the liquid crystal panel housing 4, the sound emission communicating with the sound emission opening 5 of the speaker 6 is provided. Since the sound path 7 can be effectively secured, the sound from the speaker 6 can be emitted from the sound emission opening 5 through the sound emission path 7 with a sufficient volume, and a clear sound can be heard.

Further, by designing the lower end of the liquid crystal display panel 3 to be at the same horizontal level as the bottom surface of the video camera main body 1 in the monitor operation state of the liquid crystal display panel 3, the video camera device can be placed on a desk or the like. Since the bottom surface of the video camera body 1 and the lower end of the liquid crystal display panel 3 are grounded simultaneously when placed, the stability when the video camera device is placed can be improved.

FIG. 5 shows a video camera device according to another embodiment of the present invention, in which a liquid crystal display panel is stored in a liquid crystal panel storage portion with its liquid crystal screen on the back side, when viewed from the liquid crystal display panel side when not in use. FIG. 6 is a rear view of the video camera apparatus viewed from the finder side, and FIG. 7 is a view showing the operation state of the monitor in which the liquid crystal display panel is stored in the liquid crystal panel storage section with the liquid crystal screen facing up from the liquid crystal display panel side. FIG. 8 is a rear view of the video camera device viewed from the finder side similarly.

Biaxial hinge mechanism 2 of video camera body 1
The liquid crystal display panel 3 is mounted on a central portion thereof and supported by a biaxial hinge mechanism 2 so that the liquid crystal display panel 3 can be inverted and inverted.

On the upper part of the liquid crystal panel housing part 4 in which the liquid crystal display panel 3 is housed, an opening 8 which is cut off in a semicircular shape on the side of the video camera main body 1 and is flush with the liquid crystal panel housing part 4.
Are formed. The opening 8 has a liquid crystal panel storage 4
The part of the sound emission opening 5 of the speaker 6 arranged at the corresponding position is adapted to correspond. The liquid crystal display panel 3 is
In the non-use state in which the liquid crystal display panel 4 is stored in the liquid crystal panel storage section 4 with the back side a, the opening 8 is closed by the semicircular cover piece 9 integrally formed with the liquid crystal display panel 3, and the sound emission opening 5 Is hidden from view.

When the liquid crystal display panel 3 is turned into a monitor operation state in which the liquid crystal screen 3a is turned over to the front side and stored in the liquid crystal panel storage section 4, the cover piece 9 is closed as shown in FIGS. A part of the sound emission opening 5 that has been exposed is exposed from the opening 8, and this opening 8 becomes the sound emission passage 10, so that the sound emission opening 5 can be communicated with the outside by the sound emission passage 10. At this time, the liquid crystal display panel 3 is cut out at the upper corner on the back side in a large round shape 3b, so that the entire sound emission opening 5 is opened and communicates with the sound emission passage 10.

As described above, in the video camera device according to another embodiment of the present invention, in the monitor operation state in which the liquid crystal screen 3a is turned over to the front side and housed in the liquid crystal panel housing 4, the sound emitting opening 5 of the loudspeaker 6 is connected. Since the communicating sound emitting passage 10 can be effectively secured, the sound from the speaker 6 can be emitted from the sound emitting opening 5 through the sound emitting passage 10 with a sufficient volume, and a clear sound can be heard. it can.

In the monitor operating state of the liquid crystal display panel 3, the lower end of the cover piece 9 formed integrally with the liquid crystal display panel 3 is designed to be at the same horizontal level as the bottom of the video camera body 1. When the video camera device is placed on a desk or the like, the bottom surface of the video camera body 1 and the lower end of the cover piece 9 are simultaneously grounded, so that the stability when the video camera device is placed can be improved.

By the way, a large number of parts are required for fixing a speaker provided in a video camera device. For example, a method has been widely adopted in which a speaker is held by a sheet metal with a cushion material interposed therebetween, and the sheet metal is fixed to a boss on a cabinet side by screws. However, it is conceivable to use a printed circuit board disposed in the vicinity of the sheet metal instead of the sheet metal. However, this method has not been implemented because there is a concern about excessive stress on the printed circuit board when the printed circuit board is screwed.

Further, since the speakers have some dimensional variations during the manufacturing stage, the speakers in a fixed state have a backlash, which causes a so-called chattering sound when the speakers are driven.

FIG. 9 shows a speaker fixing structure which solves the above-mentioned problem. A cushion material 11 made of elastic rubber is attached to an annular rib (not shown) formed on the outer periphery of the back surface of the sound emission opening 5, and the sound emission side frame of the speaker 6 is brought into contact with the cushion material 11. A pair of bosses 13 are provided on the outer peripheral side of the speaker 6 on the back surface of the cabinet 12.
The outer peripheral edge of the rear surface of the speaker 6 is held by the holder 14 inserted into the speakers 3 and 13.

FIG. 10 shows a state in which the holder 14 is viewed from the back.
Shown in The holder 14 is, for example, a C-shaped molded product such as POM (polyacetal), and has tubular support portions 15, 15 inserted into the bosses 13, 13 at opposing portions near both ends, respectively. Tubular support 1
5, ribs 16 and 16 are formed inside, and a dowel 17 projecting longer than the rib 16 is formed in the middle of the ribs.

That is, the front edge of the pair of dowels 17 of the holder 14 is brought into contact with the outer peripheral edge of the rear surface of the speaker 6 to hold the speaker 6. Thereafter, the printed circuit board 19 on which the circuit component 18 is mounted is placed on the tubular support portions 15 and 15 of the holder 14, and the printed circuit board 19 is set with the set screws 20.
The fixing of the speaker 6 is completed by fixing the speaker 6 to the bosses 13 at 20.

According to the fixing structure of the loudspeaker 6 configured as described above, even if the loudspeaker 6 has a dimensional variation in a manufacturing stage, the loudspeaker 6 is not tightened when the holder 14 is strongly tightened with the set screws 20. The leading end of the dowel 17 is crushed in accordance with the variation in the size, thereby absorbing the variation in the size, and the speaker 6 can be fixed without rattling. Accordingly, since the outer peripheral portion of the frame of the speaker 6 and the cushion member 11 can be in close contact with each other, it is possible to reliably prevent the occurrence of chattering sound and to eliminate a decrease in image quality due to chattering vibration. In addition, since the looseness of the speaker 6 can be eliminated, no excessive stress is applied to the screwed printed circuit board 19.

Further, since the above-described structure for fixing the speaker 6 is employed, a conventional sheet metal, screws and cushions for fixing the sheet metal are not required, so that the number of parts can be reduced and the thickness of the entire fixing structure can be reduced. There is an advantage that the thickness can be reduced.

On the other hand, in the video camera device, as a measure to prevent static electricity charged in the cabinet 12 from being charged on the frame of the speaker 6, a distance is provided between the sound emission opening 5 and the frame of the speaker 6. That was being done. However, in such a method, as the speaker becomes smaller, the opening area of the sound emission opening becomes smaller,
As a result, there is a problem that sound quality is deteriorated.

FIG. 11 shows a countermeasure against static electricity of a speaker which has solved the above-mentioned problem. That is, in the present invention, the charging is prevented by using the cushion material 11 for preventing the chattering sound of the speaker 6.

The cushioning material 11 according to the present invention is made of a member obtained by mixing conductive particles such as carbon in an elastomer rubber at an appropriate ratio, and has a ring-shaped terminal portion 11a inserted into the boss 13 at a part of the cushioning material 11. It is integrally molded.

The cushion material 11 thus configured is
The terminal portion 11 a is inserted into the hook 13, and the cushion material 11 is positioned on the rib 21 formed on the outer peripheral portion of the sound emission opening 5. An earth pattern 22 made of silver foil paper, copper foil, or the like is formed in advance on the cabinet portion around the boss 13 by bonding or the like.
By inserting the terminal portion 11a of the
Is electrically conductively connected.

With this configuration, the static electricity charged on the cabinet 12 of the video camera main body 1 is guided to the conductive cushion material 11 without being charged on the frame of the speaker. Since the sound can be effectively dropped, the sound emitting opening of the speaker can have a sufficient opening area to prevent deterioration of sound quality. Further, since a special net for preventing static electricity is not required between the cabinet 12 and the speaker, the cost can be reduced.

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

In the example shown in FIGS. 3 and 4, the case where the sound emitting opening 5 of the speaker 6 is provided on the upper side of the liquid crystal panel housing 4 is described. It is also conceivable to provide the speaker with a sound emission opening. In this case, if a biaxial hinge mechanism is provided at a position deviated to the upper part of the liquid crystal display panel 3, the liquid crystal display panel 3 is turned over and the monitor is turned over. When activated,
From the lower part of the liquid crystal display panel 3, the sound emission opening of the speaker is exposed and the sound can be heard.

In another example shown in FIGS. 5 and 6,
Also in the case where the sound emission opening of the speaker is provided on the lower side of the liquid crystal panel storage section 4, when the liquid crystal display panel is not in use, the sound emission opening is closed by a cover piece and the sound emission opening is released in the monitor operation state of the liquid crystal display panel. The sound opening may be exposed so that the sound can be heard.

[0042]

As described above, in the video camera device according to the present invention, the liquid crystal display section is housed in the liquid crystal panel housing section with the liquid crystal screen facing up and communicates with the sound emission opening of the speaker when the monitor is in operation. Since the sound emission passage is provided, the sound emission opening of the speaker of the liquid crystal panel storage unit communicates with the sound emission passage in the monitor operation use mode, whereby the sound generated from the sound emission opening is generated. There is an effect that sound can be emitted outside with sufficient volume through the sound emission passage.

[Brief description of the drawings]

FIG. 1 is a side view of a video camera device in a non-use state in which a liquid crystal display panel is stored in a liquid crystal panel storage section in an example of the present invention.

FIG. 2 is a rear view of the video camera device when the liquid crystal display panel is not used.

FIG. 3 is a side view of the video camera device in a monitor operation state in which a liquid crystal display panel is stored in a liquid crystal panel storage unit.

FIG. 4 is a rear view of the video camera device in a monitor operation state of the liquid crystal display panel.

FIG. 5 is a side view of the video camera device in a non-use state in which a liquid crystal display panel is stored in a liquid crystal panel storage section in another example of the present invention.

FIG. 6 is a rear view of the video camera device when the liquid crystal display panel is not used.

FIG. 7 is a side view of the video camera device in a monitor operation state in which the liquid crystal display panel is stored in the liquid crystal panel storage unit.

FIG. 8 is a rear view of the video camera device in a monitor operation state of the liquid crystal display panel.

FIG. 9 is a sectional view of a support structure of the speaker.

FIG. 10 is a perspective view of a holder that is a support member of the speaker.

FIG. 11 is a plan view of a cushion material for preventing static electricity of a speaker and a ground.

FIG. 12 is an external perspective view of a conventional video camera device.

FIG. 13 is a side view of the video camera device in a non-use state in which the liquid crystal display panel is stored in the liquid crystal panel storage unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Video camera main part, 2 ... Biaxial hinge mechanism, 3 ... Liquid crystal display panel, 3a ... Liquid crystal screen, 4 ... Liquid crystal panel storage part, 5 ... Sound emission opening, 6 ... Speaker, 7 ... Sound emission passage, 8
... Notch, 9 ... Cover piece, 10 ... Sound emission passage, 11 ... Cushion material, 12 ... Cabinet, 13 ... Boss, 14 ... Holder, 17 ... Dowel, 19 ... Printed circuit board, 20 ... Set screw, 22 ... Pattern ground

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoichi Miyajima 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Koji Yaginuma 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Takao Saito 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo Sony Corporation Inside (72) Yoshitake Takahashi 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Soni -Inc. (72) Inventor Osamu Minakami 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 5C022 AA11 AC03 AC11 AC61 AC71 AC78 5D017 AE28

Claims (3)

[Claims] 1. A liquid crystal display unit externally attached to a video camera main unit is made up-and-down and reversible by a two-axis hinge mechanism rotatable in the X-axis and Y-axis directions, and the liquid crystal display unit is housed therein. A non-use state in which the liquid crystal display unit is stored in the liquid crystal storage unit of the video camera main unit with the liquid crystal screen facing backward in a video camera device having a speaker sound emission opening on a storage surface of the video camera main unit. In the above, the sound emission opening of the speaker is concealed by the liquid crystal display, and the sound emission of the speaker is released in the monitor operation state in which the liquid crystal display is housed in the liquid crystal housing of the video camera body with the liquid crystal screen facing up. A video camera device, wherein a sound emission passage communicating with the opening is provided. 2. The video camera device according to claim 1, wherein the liquid crystal display unit is supported so as to be deviated upward or downward with respect to the biaxial hinge mechanism, and the liquid crystal display unit is not used in the liquid crystal display unit. A video sound camera, wherein a sound emission opening of the speaker is concealed by the portion, and a sound emission passage communicating with the sound emission opening of the speaker is formed in a monitor operation state of the liquid crystal display portion. apparatus. 3. The video camera device according to claim 1, wherein the sound emission opening of the speaker is disposed at a position protruding from a liquid crystal storage of the liquid crystal display, and the liquid crystal is not used when the liquid crystal display is not used. The sound emission opening of the speaker is concealed by a cover piece extending from the display unit, and the sound emission opening of the speaker is exposed and a sound emission passage is formed in the monitor operating state of the liquid crystal display unit. A video camera device characterized by the above-mentioned.