JPH11174580A - Device for confirming angle of visibility of camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confirm the angle of visibility to the same extent as actual photographing by using a simple appliance before installing a camera. SOLUTION: By folding synthetic resin or cardboard, a main body 1 is formed in the shape of a bottomless pyramid body. An aperture on a narrow-mouth side is set as an ocular port 2, and a front surface plate 3 formed of a transparent plate is attached to an aperture on a wide-mouth side. A frame line 4 corresponding to the angle of visibility of the camera is drawn on the plate 3. The frame line 4 is provided in accordance with a lens(standard, wide-angle, etc.), used in the camera. By providing the plate 3 for every lens and making the outside of the frame line 4 translucent, the angle of visibility is easily confirmed. By providing plural projecting parts at the periphery part of the plate 3 and corresponding slits at the edge part of the main body 1, the plate 3 is attached to the main body 3. By providing a projection part on either of two surfaces forming one ridge of the pyramid body being the main body 1 and a slit on the other and fitting the projection part in the slit, the main body 1 is made a knockdown type one, and it is folded and housed in a housing case.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera viewing angle checking device, and more particularly to a camera viewing angle checking device that does not use a camera.

[0002]

2. Description of the Related Art When a surveillance camera (hereinafter abbreviated as a camera) is installed, it is necessary to confirm a surveillance range, that is, a viewing angle of the camera with an installer (user). The viewing angle of the camera can be predicted visually by a professional engineer,
It is difficult for the installer to understand only by explanation, and in order to avoid trouble after installation due to differences in speculation, there are cases where it is necessary to install a camera and connect a monitor and have the installer see the live-action screen, the viewing angle There is a problem that it takes time and effort to confirm the confirmation.

[0003]

SUMMARY OF THE INVENTION In view of the foregoing, an object of the present invention is to make it possible to confirm the viewing angle to the same extent as that of a real photograph without using a camera by using a simple device.

[0004]

In order to achieve the above object, in the camera viewing angle confirmation apparatus of the present invention, the narrow opening of the bottomless truncated pyramid-shaped main body is used as the eyepiece, and the wide opening is used as the eye opening. A front panel made of a transparent plate is provided on the front panel, and a frame line corresponding to the viewing angle of the camera is drawn on the front panel so that the viewing range corresponding to the viewing angle of the camera can be confirmed by looking through the front panel from the eyepiece. .

[0005] The front panel is provided for each lens used in the camera, and a frame line corresponding to the viewing angle of the lens used is drawn on each front panel.

[0006] Also, the portion of the front plate outside the frame is made translucent,
The viewing angle may be easily checked.

Alternatively, a frame of a viewing angle corresponding to each lens is drawn on the front plate corresponding to the lens mounted on the camera, so that the viewing angles of a plurality of lenses can be confirmed with one front plate. Good.

A plurality of protrusions are provided on the peripheral edge of the front plate, and a slit is provided in a main body portion corresponding to the protrusion. Each protrusion of the front plate is fitted into a corresponding slit of the main body, and the front plate is inserted into the main body. May be attached.

[0009] Further, a protruding portion is provided on one of two surfaces forming one ridge of the bottomless quadrangular pyramid of the main body, and a slit corresponding to the protruding portion is provided on the other side, and the protruding portion is fitted into the slit to assemble into a pyramid shape. It may be an expression.

[0010] Then, the opposing 2 of the bottomless quadrangular pyramid of the main body.
The center of the surface may be folded in a valley fold, and a storage case may be provided. The storage case may be stored together with the front plate in the storage case, so that it can be easily carried.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIG. 1 is a perspective view of a main part of an embodiment of a camera viewing angle confirmation device according to the present invention. In the figure, 1 is the body of the camera viewing angle confirmation device, 2 is the eyepiece,
Reference numeral 3 denotes a front plate formed of a transparent member, and reference numeral 4 denotes a frame line indicating the viewing angle drawn on the front plate 3. The main body 1 is formed by bending a member such as synthetic resin or cardboard to form a bottomless pyramid (square horn).
The front opening 3 is attached to the opening on the wide-mouth side.

The front plate 3 is made of a transparent resin or the like.
For example, as shown in FIG. 2, a “standard” frame line indicating a viewing angle when a standard lens is mounted on one front panel 3 and a “wide angle” indicating a viewing angle when a wide-angle lens is mounted. Draw a frame line and so on. The figure shows an example in which there are two types of lenses. If there are three or more types of lenses, the number of frame lines is increased according to the number of types. Alternatively, the front plate 3 may be provided for each type of lens, such as for a standard lens or a wide-angle lens, and may be dedicated to each lens. In this case, the outer portion of the frame line of each front plate may be made semi-transparent by coloring or the like so that the viewing angle can be seen at a glance.

Then, the user places the camera at the position where the camera is to be installed, looks at the eyepiece of the main body 1, and checks whether the required visual field range is within the frame 4 of the front panel 3.

The main body 1 is assembled as shown in FIG. 3, and a protrusion 11 is formed on one of the two faces forming one edge of the bottomless quadrangular pyramid.
On the other hand, a slit 12 corresponding to the protrusion 11 is provided, the protrusion 11 is fitted into the slit 12 so as to be assembled into a pyramid shape, and a plurality of protrusions 13 are provided on the periphery of the front plate 3 and the main body is provided. Slits 14 corresponding to the protruding portions 13 are provided at the edge of the opening on the wide opening side of the
And the front plate 3 is attached to the main body 1. FIG. 4 is an exploded view of the main body 1 and a front view of the front plate 3, and the reference numerals of the protrusions and the slits correspond to the reference numerals of FIG.

Then, a storage case 21 shown in FIG. 5 is provided.
The central portions a of both sides of the bottomless quadrangular pyramid of the main body 1 are folded in a valley and folded, and stored in the storage case 21 together with the front plate 3 so that they can be easily carried without being bulky. 4 and 5 show examples (unit: mm) of dimensions of main parts of the main body 1, the front plate 3, and the storage case 21.

[0016]

As described above, according to the camera viewing angle checking device of the present invention, the viewing angle can be checked with a device formed of a lightweight member such as a synthetic resin or cardboard, and it can be assembled. This makes it easy to carry around, and allows the installer (user) to check the viewing angle almost the same as the actual image without installing the camera, which can prevent trouble after installation. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an embodiment of a camera viewing angle checking device according to the present invention.

FIG. 2 is an example of a front panel of the camera viewing angle confirmation device according to the present invention.

FIG. 3 is an exploded perspective view of a main part of an embodiment of a camera viewing angle confirmation device according to the present invention.

FIG. 4 is a development view of a main part of an embodiment of a camera viewing angle confirmation device according to the present invention.

FIG. 5 is an example of a storage case of the camera viewing angle confirmation device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Eyepiece 3 Front panel 4 Frame line showing viewing angle 11, 13 Projection part 12, 14 Slit 21 Storage case a Valley folding

Claims (7)

[Claims] 1. A front plate formed of a transparent plate is provided at an opening at a narrow opening side of a bottomless quadrangular pyramid-shaped main body, and a front plate formed of a transparent plate is provided at an opening at a wide opening side, and a frame corresponding to a viewing angle of a camera is provided on the front plate. Draw a line,
A camera viewing angle checking device that enables a user to check a viewing range corresponding to a viewing angle of a camera by looking through a front plate from an eyepiece. 2. The front panel according to claim 1, wherein the front panel is provided for each lens used in the camera, and a frame line corresponding to a viewing angle of the lens used is drawn on each front panel. Camera viewing angle confirmation device. 3. The camera viewing angle checking device according to claim 1, wherein an outer portion of the front plate is made translucent. 4. A frame having a viewing angle corresponding to each lens is drawn on the front panel so as to correspond to a lens mounted on a camera,
2. The camera viewing angle confirming device according to claim 1, wherein one front plate is adapted to correspond to a plurality of lenses. 5. A plurality of projections are provided on a peripheral edge of the front plate, and a slit is provided in a main body portion corresponding to the projection, and each projection of the front plate is fitted into the corresponding slit to attach the front plate to the main body. 5. The camera viewing angle checking device according to claim 1, wherein the camera viewing angle checking device is mounted. 6. A protruding portion is provided on one of two surfaces forming one ridge of the bottomless quadrangular pyramid of the main body, and a slit corresponding to the protruding portion is provided on the other side, and the protruding portion is fitted into the slit to assemble into a pyramid shape. 6. The camera viewing angle confirmation device according to claim 1, wherein the camera viewing angle confirmation device is an assembly type. 7. The storage device according to claim 6, further comprising a storage case, wherein the center portions of two opposing surfaces of the bottomless quadrangular pyramid of the main body are valley-folded, and can be stored in the storage case together with the front plate. Camera viewing angle confirmation device.