JP2558618Y2 - Underwater camera case - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera case for underwater photography, which houses a camera so as to photograph underwater.

[0002]

2. Description of the Related Art In general, to photograph underwater, a camera is housed in a sealed underwater photographing camera case and photographing is performed.

As shown in FIG. 6, the camera case for underwater photography has a camera housed in a cylindrical camera case 20 and has a front opening covered with a transparent plate 21 such as a glass plate.
A back cover 22 is detachably attached to the rear opening so that the camera can be taken in and out.

In order to cover the front opening of the camera case 20 with the transparent plate 21 tightly closed, as shown in FIG. The frame 23 is attached to the camera case 20 by the fastening screw 24.

[0005]

[0005] However, the camera case 20 as described above has a problem that the transparent plate 2 can be used during shooting underwater.
If air bubbles adhere to the front surface of the transparent plate 21, even if the camera case 20 is rocked to eliminate the air bubbles, the air bubbles cannot be easily removed because the frame 23 protrudes from the peripheral edge of the front surface of the transparent plate 21.
There is a problem that distortion is generated in an image captured by bubbles.

Therefore, an object of the present invention is to provide a camera housing case for underwater photography which can easily remove air bubbles adhering to the front surface of the transparent plate.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a camera housing case for underwater photography according to the present invention has a structure in which a bubble escape groove connecting an inner edge and an outer edge thereof is formed at a predetermined interval in a frame. It was adopted.

[0008]

In the camera case for underwater photography according to the present invention having the above-described structure, bubbles adhering to the front surface of the transparent plate are easily swung and displaced through the bubble escape groove formed in the frame. Can be removed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1, 2 and 3, a camera case 1 for underwater photography is made of a stainless steel case body 2 formed in the shape of a rectangular tube, and a transparent glass plate for covering the front opening. 3, a frame body 4 that covers the periphery of the transparent plate 3, and a back cover 5 that covers the back opening of the case body 2.

In the case main body 2 described above, a front tube 6 for holding the transparent plate 3 and a rear tube 7 made of a square pipe forming a camera housing are integrally formed by welding. A stepped through hole 6a is formed in the front cylindrical portion 6, and the through hole 6a
The transparent plate 3 is fitted into the supporting member 6 and is supported by the stepped portion 6b to prevent it from falling off. An annular groove 6c is formed on the front surface of the step portion 6b, and an O-ring 8 is fitted therein (see FIG. 4). Next, a large-diameter back cover fitting portion 7a into which the back cover 5 is fitted is formed in the rear cylindrical portion 7, and the back cover 5 is supported by a support portion 7b, which is the bottom surface, so as not to come off.

The frame 4 is composed of a frame front 9 covering the periphery of the transparent plate 3 and an annular frame rear 10 fitted on the peripheral surface of the transparent plate 3. As shown in FIG. 2, a plurality of bubble escape grooves 11 connecting the inner edge and the outer edge of the frame front portion 9 are formed radially at predetermined intervals. Also, the frame rear part 1
A tapered surface 10a extending outward is formed at the leading end of 0 (see FIG. 4).

The back cover 5 has a tray shape having a flange portion 5a. In order to attach the back cover 5 to the back opening of the case body 2, a back cover frame 12 to be superimposed on the flange portion 5a and a pair of pressing plates 13 which engage with the case body 2 and press the back cover frame 12 are provided. (See FIG. 5).

Then, as shown in FIG.
The transparent plate 3 is fitted with two O-rings 8 externally fitted into the front opening, and the two O-rings 8 are fitted into the through holes 6a of the front cylinder part 6 and the frame fitting 14 and the rear part of the frame body. 10 and the transparent plate 3 has a stepped portion 6b of the front cylindrical portion 6 and a frame front portion 9
And an annular sheet packing material 15 therebetween. Therefore, the frame 4 is connected to the front cylinder 6 of the case body 2.
The transparent plate 3 is tightly attached to the front opening of the case body 2 by securely attaching the transparent plate 3 to the case body 2 with the fastening screws 16.

At this time, the transparent plate 3 is arranged without tilting with respect to the frame 4 only by pressing the frame 4 by the tapered surface 10 a of the frame rear portion 10 of the frame 4. Also, a ridge 1 is provided on the contact surface of the frame fitting 14 which contacts the sheet packing material 15.
4a is formed to prevent the sheet packing material 15 from falling off when the frame 4 is pressed by water pressure.

Next, in the rear opening of the case body 2, a large-diameter back cover fitting portion 7a of the cylindrical portion 7 is provided with a tapered frame fitting 1a.
9, the back cover 5, the back cover frame 12, and the pressing plate 13 are sequentially fitted,
It is prevented from falling off by the support part 7b and is overlapped. Also,
An O-ring 8 is fitted into the tapered surface 19 a of the tapered frame fitting 19 and the tapered surface 5 a formed on the peripheral edge of the back cover 5.
Then, as shown in FIG. 5, a locking portion 13 a formed at one end of the pressing plate 13 is locked in a locking groove 17 formed in the rear cylinder portion 7 and tightened into a screw hole 13 b formed in the pressing plate 13. Screw 1
8 are engaged. The fastening screw 18 is used for the back cover frame 12.
When it is fitted into the guide holes 12a formed at the four corners and firmly tightened, the back cover frame 12 presses the flange portion 5a of the back cover 5, and the back cover 5 is attached in a sealed manner. When the back cover 5 is removed, the fastening screw 18 is removed, and the pressing plate 13 and the back cover frame 12 are removed in this order, so that the hermeticity inside the case body 2 is gradually lost. 5 does not become difficult to remove due to a pressure difference.

The underwater photographing camera case 1 configured as described above has a sealing property, and the camera can be easily put in and out of the camera case 1 by attaching and detaching the back cover 5.

Further, even if bubbles adhere to the front surface of the transparent plate 3 during underwater photography, the bubbles can be easily discharged from the bubble escape groove 11 formed in the frame 4 by shaking the camera case 1. .

[0018]

As described above, the underwater photographing camera case of the present invention can easily eliminate bubbles attached to the front surface of the transparent plate, so that the photographed image is not distorted. Demonstrate.

[Brief description of the drawings]

FIG. 1 is a partially cutaway longitudinal sectional view of an embodiment.

FIG. 2 is a front view of the same.

FIG. 3 is a rear view of the above.

FIG. 4 is an enlarged view of a main part of FIG. 1;

FIG. 5 is an exploded perspective view of a part A in FIG. 1;

FIG. 6 is a perspective view of a conventional example.

FIG. 7 is a sectional view of a main part of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underwater camera case 2 Case main body 3 Transparent plate 4 Frame 5 Back lid 6 Front cylinder of case main body 7 Rear cylinder of case main body 9 Frame front of frame 10 Rear of frame of frame 11 Air bubble escape Groove 12 Back cover frame 13 Press plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A transparent plate for covering a front opening of a cylindrical case body is mounted between a frame body covering the peripheral edge thereof and the case body, and a back cover is detachably attached to the rear opening. A camera case for underwater photography, wherein a plurality of air bubble escape grooves connecting an inner edge and an outer edge thereof are formed at predetermined intervals in the frame body.