JP3271254B2 - Camera lens holding device for video camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding device for mounting a photographic lens structure for a video camera to a camera base.

[0002]

2. Description of the Related Art FIG. 4 is a schematic arrangement view of a video camera to which a conventional holding structure is applied. In FIG. 4, a photographing lens structure 52 of a video camera 51 includes a camera cabinet 53 and a camera board 54 as a camera base.
It has a rigid structure directly attached with screws 55. The photographing lens structure 52 is a zoom lens, and has a driving motor 56 for zooming operation.

[0003]

In the video camera 51 having such a conventional structure, when zooming operation is performed, vibrations are generated together with a motor driving sound and a radiation sound such as a meshing sound between power transmission gears (not shown). . In addition, these radiated sounds and vibrations are transmitted to the camera cabinet 53 and the camera board 54.
, And this is input to a microphone 57 attached to the video camera 51 and recorded as noise. This becomes a problem particularly as the sensitivity of the microphone 57 is improved and the performance is increased. Also,
The vibration frequency of this noise ranges from 50 Hz to 10 KHz. Further, in the case where the photographing lens structure is rigidly connected with screws as in the conventional structure, there is a problem in that an impact force at the time of a drop or the like is directly transmitted to the photographing lens structure and the photographing lens structure is easily broken.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to enhance the effect of absorbing radiation noise and vibration generated from the photographic lens assembly side, reduce the recording of noise, and An object of the present invention is to provide a video camera lens holding device having a structure capable of protecting the lens assembly from external impacts or the like.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a video camera lens holder for mounting a lens having a drive motor on a camera body. A soft material for vibration absorption / sound insulation formed in a mat shape by enclosing silicon or the like, wherein the soft material is an imaging lens assembly including the drive motor except for a lens opening of the imaging lens assembly. The camera lens unit is formed so as to cover substantially the entire outer side of the camera lens unit , and is attached to the camera body via the flexible material.

[0006]

SUMMARY OF] According to this configuration, since there is no the radiation noise and vibration generated from the drive motor or the like of the photographing lens structure side is recorded as a noise has been recorded medium absorbed by soft resistant material, recording good quality Will be possible. Also , when the camera falls,
Even when subjected to external shock, the shock can be protected photographic lens structure and absorbed by the soft property material. Without fixing the photographic lens structure directly camera body, since the fixed via a soft resistance material flexibility can be obtained, even if some design changes to the mounting portion is caused can be used, the taking lens assembly Can be shared.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partially cutaway front view showing a schematic configuration of a video camera according to an embodiment of the present invention, and FIG. 2 is a partially cutaway perspective view showing the video camera of FIG. In FIG. 1 and FIG. 2, this video camera 1
A lens opening 2a of the taking lens assembly 2 and a microphone 3 are provided on the front side, and a finder section 4 is provided on the rear side.

The photographing lens structure 2 has a structure in which the photographing lens structure 2 is attached to a camera cabinet 5 and a camera substrate 6 as a camera base via a soft resin material ( soft material for vibration absorption and sound insulation ) 7. The photographing lens structure 2 is a zoom lens and a driving motor 8 for performing a zooming operation.
Is installed.

As shown in FIG. 3, the soft resin material 7 is a mat-like material obtained by enclosing gel-like silicon 10 which is almost liquid-like in a bag-like body 9 formed of a soft rubber thin film. Which is formed into a lens opening 2a of the photographing lens structure 2.
The photographing lens structure 2 including the drive motor 8 except for the portion
Is mounted so as to wrap around the entire outside of the camera, and is handled together with the photographing lens structure 2 in a unit shape. In addition, when making this soft resin material 7, 5
The structure is such that sound and vibration in a frequency band of 0 Hz to 10 KHz can be absorbed.

When the photographing lens structure 2 is mounted on the camera body, the photographing lens structure 2 is not directly in contact with the camera cabinet 5 and the camera substrate 6, but the soft resin covering the outside of the photographing lens structure 2 is used. The members are brought into contact with each other via the material 7, and then fixed and held by means (not shown).

Therefore, according to the structure of the embodiment constructed as described above, the driving motor 8 on the photographing lens structure 2 side is used.
Since the radiation sound and vibration generated from the above are not absorbed by the soft resin material 7 and recorded on the recording medium as noise,
High quality recording becomes possible. Further, by changing the material of the bag-like body 9 and the silicon 10 constituting the soft resin material 7, the effect can be easily obtained so that the desired vibration isolating point can be obtained. Furthermore, even if the camera falls or receives an external impact, the impact can be absorbed by the soft resin material 7 to protect the photographic lens assembly 2. The photographing lens structure 2 is connected to a camera base (camera cabinet 5 and camera board).
6) is not directly fixed, but is fixed via the soft resin material 7, so that a degree of freedom can be obtained, and it can be used even if a slight design change or the like occurs in the mounting portion. Can be achieved.

The structure of the above embodiment discloses a structure in which a gel-like silicon 10 almost close to a liquid is sealed in a bag-like body 9 made of a soft resin material 7 formed of a soft rubber thin film. was, but if a structure that can absorb the radiated sound from the taking lens structure 2 side, in which no problem at other than silicon 10.

[0013]

As described in the foregoing, according to the holding device of the video camera taking lens assembly according to the present invention, the radiation noise or vibration <br/> soft resistant material generated from the driving motor or the like of the photographing lens structure side , And is not recorded as noise on the medium, so that high-quality recording is possible. Also, when dropped such as a camera, even when subjected to external shock, the shock can protect the photographic lens structure and absorbed by soft resistant material, the impact resistance is improved. Without fixing the photographic lens structure directly camera body, since the fixed via a soft resistance material flexibility can be obtained, even if some design changes to the mounting portion is caused can be used, the taking lens assembly Can be shared, and costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a schematic configuration of a video camera according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the video camera of FIG. 1 partially cut away.

FIG. 3 is a sectional view of a main part of a single soft resin material.

FIG. 4 is a schematic arrangement view of a video camera to which a conventional holding structure is applied.

[Explanation of symbols]

1 the video camera 2 photographing lens structure 5 Camera cabinet (Camera body) 6 camera board (camera body) 7 soft resin material (vibration absorption, sound insulation soft material) 8 drive motor 9 bag-like member 10 gelatinous silicon

Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G02B ⁷ /02-7/105 H04N 5/222-5/257

Claims (1)

(57) [Claims] 1. A device for holding a photographing lens structure for a video camera, wherein the photographing lens structure equipped with a drive motor is mounted on a camera base, wherein a vibration is formed in a mat shape by enclosing gel-like silicon or the like in a soft bag-like body. A soft material for absorption and sound insulation, wherein the soft material covers substantially the entire outside of the photographing lens structure including the drive motor except for a lens opening of the imaging lens structure; in conjunction with being, the imaging holding device of a video camera for photographing lens structure of the lens structure and wherein the mounting is brought into contact through the flexible member to the camera body.