JPH05145808A - View finder mounting device for camera - Google Patents

Abstract

PURPOSE:To obtain an effective photographic form at camera photographing, to simplify the structure, to make the device light and to reduce the cost and to prevent occurrence of a play of the mounting device. CONSTITUTION:A dovetail groove 7 is adopted for a guide groove of a 1st slider unit 6 and slopes 11a-11d in matching with groove walls 7a, 7b of the dovetail groove 7 are formed to four end ridges of a shoe 11. Thus, since the two end ridges corresponding to two sides in parallel with each other in the four end ridges of the shoe 11 are fitted to both groove walls 7a, 7b at mount of the finder, the mount direction of the view finder 16 with respect to the 1st slider unit 6 is set in four directions to enhance the degree of freedom of the mounting position of a view finder 17. Furthermore, since the finder mounting structure by means of the fitting of 4 sets of the two end ridges among the four end ridges of the shoe 11 to the dovetail groove 7 is attained, it is not required to add newly a rotary mechanism or the like different from a conventional mounting device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewfinder mounting device for a camera suitable for use in, for example, a portable video camera.

[0002]

2. Description of the Related Art Generally, in a television camera, the position of the operator's eyes is adjusted by advancing / retreating a viewfinder as a means for knowing an accurate shooting state at the time of shooting by the camera in the front-back direction or the left-right direction of the camera body. It is widely known that there is a camera viewfinder mounting device that has the function of enhancing the operability of the camera, or the function of enhancing the portability of the camera by positioning the viewfinder by rotating it above the camera body when carrying the camera. Has been.

Conventionally, a viewfinder mounting device for a camera of this type has a mounting member mounted on the camera body for holding a slide shaft that moves forward and backward, and a slide shaft that is provided in front of the mounting member so as to be movable back and forth. It is provided with a fixed moving member and a supporting member having a shoe that is rotatably provided on the moving member and that guides the viewfinder main body in the left-right direction and has a rectangular shape in plan view.

[0004]

By the way, in the viewfinder mounting device of this type of camera, inclined surfaces are formed on both side edges of the shoe (side edges corresponding to two sides parallel to each other). Since the viewfinder main body is provided with the dovetail groove having the groove wall that fits in, the mounting direction of the viewfinder with respect to the support member is limited to two directions. As a result, there is a problem in that the degree of freedom in the mounting position of the viewfinder is lowered, and an effective shooting form cannot be obtained when shooting with the camera.

Therefore, it is conceivable to increase the degree of freedom of the mounting position of the viewfinder by, for example, a rotating mechanism, but in this case, not only the structure becomes complicated, but also the entire device becomes heavy. Further, there has been an inconvenience that the apparatus rattles and the cost increases due to an increase in the number of parts constituting the rotating mechanism.

The present invention has been made in view of the above circumstances, and it is possible to obtain an effective photographing mode at the time of photographing with a camera, to simplify the structure, to reduce the weight of the entire apparatus, and to reduce the cost. (EN) A viewfinder mounting device for a camera, which can prevent the occurrence of rattling of the device.

[0007]

In a viewfinder mounting apparatus for a camera according to the present invention, the guide groove of the first slider unit is formed by a dovetail groove whose fitting surface with respect to the shoe of the second slider unit is inclined. An inclined surface that fits the fitting surface of the dovetail groove is formed at the four edges of the shoe.

[0008]

In the present invention, when the finder is attached, the two end edges of the four end edges of the shoe, which correspond to the two sides parallel to each other, can be fitted into the groove walls on both sides of the dovetail groove.

[0009]

Embodiments of the present invention will be described in detail below with reference to embodiments shown in the drawings.

FIG. 1 is an exploded perspective view showing a viewfinder mounting device for a camera according to the present invention, and FIGS. 2 (A) to 2 (C).
FIG. 4A is a plan view, a front view, and a right side view showing a shoe of a viewfinder mounting device for a camera according to the present invention.

In FIG. 1, reference numeral 1 is a main body for a video camera, and an image pickup lens (not shown) is provided at the front end.
A lens mount adapter 2 having a mounting hole 3a, which is opened in the front-rear direction, is attached to the front part of the upper end surface.
A holding body 3 having 3b is provided.

Reference numerals 4 and 5 are guide rods extending in the front-rear direction, and are fixed to the holding body 3 with their rear end portions facing the mounting holes 3a and 3b.

Reference numeral 6 denotes a first slider unit which moves forward and backward, and is composed of two upper and lower unit elements 6a and 6b which can be fitted to each other.
Has been inserted into. A guide having a dovetail groove 7 as a guide groove that extends in the left-right direction of the main body 1 and that opens upward is provided on the upper end surface of the upper unit element 6a of the unit elements 6a and 6b of the first slider unit 6. 8 is attached. Reference numeral 9 is an operation lever for fixing the first slider unit 6 to the guide rods 4, 5.

Reference numeral 10 denotes a second slider unit which moves back and forth in the left-right direction, and has a shoe 11 having a rectangular shape in plan view which fits in the dovetail groove 7 and a holding member which is erected on the upper end surface of the shoe 11 and extends vertically. A rod (not shown), a fastening member 12 fixed to the upper end of the holding rod (not shown) and having a shaft holding curved surface 12a, the fastening member 12 and the shoe 11
And a lock ring 13 for fixing a viewfinder, which will be described later, that is held between the guide 8 and the holding rod (not shown). The shoe 11 of the second slider unit 10
Groove walls 7a, 7b of the dovetail groove 7 (fitting surface)
The inclined surfaces 11a to 11d conforming to are formed. Reference numeral 14 is an operating lever for fastening the shaft.

Reference numeral 15 is a shaft fitted to the shaft holding curved surface 12a.
It is fixed by the operation of 4, and a viewfinder 16 having an eyepiece lens 16a is rotatably provided at one end through a fixed arm 17.

In the figure, the alternate long and two short dashes line shows another mounting position of the viewfinder 16.

In the viewfinder mounting device for a camera constructed as described above, the two end edges (11a, 11c), (11b, 11d), (of the four end edges of the shoe 11 which are parallel to each other at the time of mounting the finder are parallel to each other. 11c,
11a), (11d, 11b) on both sides of the dovetail groove wall 7
It can be fitted to a and 7b.

Therefore, in this embodiment, the mounting directions of the viewfinder 16 with respect to the first slider unit 6 can be set to four directions, so that the degree of freedom of the mounting position of the viewfinder 16 with respect to the first slider unit 6 is increased. be able to.

In addition, in this embodiment, 4 of the shoe 11 is used.
Of the edges, four pairs of two edges (11a, 11c), (11
b, 11d), (11c, 11a), (11d, 11
b) and the dovetail groove 7 are fitted to each other, the first slider unit 6
Since the viewfinder 16 is attached to the, there is no need to newly add a rotating mechanism or the like unlike the conventional case.

In the present embodiment, the example applied to the video camera is shown, but the present invention is not limited to this, and it can be applied to various cameras such as a television camera for a broadcasting station as in the embodiment. Applicable.

Further, the present invention is not limited to the above-mentioned embodiment, and various modifications and changes can be made based on the technical idea of the present invention.

[0022]

As described above, according to the present invention, the guide groove of the first slider unit is formed by the dovetail groove whose fitting surface with respect to the shoe of the second slider unit is inclined, and the dovetail groove is fitted. Since the inclined surface that matches the surface is formed on the four edges of the shoe, the two edges corresponding to the two sides of the four edges of the shoe that are parallel to each other when fitting the finder are fitted to the groove walls on both sides of the dovetail groove. Can be made

Therefore, the viewfinder can be attached to the first slider unit in four directions, so that the degree of freedom of the viewfinder attachment position can be increased and an effective shooting mode can be obtained when shooting with the camera. it can.

Further, the viewfinder is attached to the first slider unit by fitting the two sets of two ends of the four ends of the shoe to the dovetail groove, which adds a rotating mechanism and the like as in the conventional case. Since there is no need, there is an advantage that the structure can be simplified, the weight of the entire apparatus can be reduced, and the cost can be reduced, and the rattling of the apparatus can be prevented.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a viewfinder mounting device of a camera according to the present invention.

2A to 2C are a plan view, a front view and a right side view showing a shoe of a viewfinder mounting device for a camera according to the present invention.

[Explanation of symbols]

1 ... Main body, 6 ... First slider unit, 7 ... Dovetail groove, 7
a, 7b ... Groove wall, 10 ... Second slider unit, 11
... Shoes, 11a to 11d ... Slopes, 16 ... Viewfinder.

Claims (1)

[Claims] 1. A first slider unit which has a guide groove extending in the left-right direction of a video camera body and which moves forward and backward, and a plane which is provided in the first slider unit so as to move forward and backward and is fitted in the guide groove. A viewfinder mounting device for a camera, comprising: a second slider unit having a rectangular shoe when viewed; and a viewfinder that is rotatably provided on the second slider unit and moves back and forth in the direction in which the guide groove extends. The groove is formed by a dovetail groove in which the fitting surface for the shoe is inclined,
A viewfinder mounting device for a camera, characterized in that inclined surfaces that match the fitting surface of the dovetail groove are formed at the four edges of the shoe.