JPH0610933U - Camera viewfinder structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To recognize that the power switch of the camera is off when looking through the viewfinder and improve the usability of the camera for the user. In a camera capable of shooting with different shooting sizes, a power switch 3 is integrally provided as a means for switching the shooting size, and a mask 22A for changing the field of view of the viewfinder by moving the viewfinder 2 back and forth by the switching means. 22B is provided. Then, when the power switch 3 is turned off, the masks 22A and 22B are configured to close almost the entire viewfinder field, and the user looks into the viewfinder and finds out that the viewfinder field is closed. Immediately recognize that the power switch is off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a camera capable of switching to different shooting sizes such as a standard size and a panoramic size, and more particularly to a finder structure thereof.

[0002]

[Prior art]

 Recently, a standard size (Leica size) camera has been proposed for performing panoramic size shooting. In such a camera, the viewfinder is designed according to the standard size, so it is necessary to mask the top and bottom of the viewfinder to switch to a horizontally long field of view when shooting panoramic size images. For this reason, conventionally, a mask with a shutter structure is provided above and below the viewfinder, and the mask is configured to be movable up and down.When shooting in standard size, the mask is retracted from the field of view of the finder, and when shooting in panoramic size. It has been proposed that the finder field of view be made into a horizontally long panoramic size by making it enter the finder field of view from above and below.

[0003]

[Problems to be solved by the device]

 By the way, such a mask is configured to be moved by a manual operation of a lever or the like, but since it is necessary to perform the operation every time the photographing size is switched, if the switching is forgotten or the switching is mistaken, The actual shooting size may not match the viewfinder field, resulting in incorrect shooting. In order to prevent this, there is a configuration in which the mask is operated in conjunction with the film frame of the camera or the focal length of the lens, or a display is made on the camera display unit according to the operation of the mask. It

However, since there is no direct structural relationship between the mask and the power switch of the camera, the viewfinder remains in the standard size or the panorama size even when the power switch is off. Therefore, the user may find that the power switch is off only when he / she tries to take a picture through the viewfinder, and may miss a chance to take a picture. An object of the present invention is to provide a camera finder structure in which the power switch is turned off when looking into the viewfinder and the usability of the camera is improved by the user.

[0005]

[Means for Solving the Problems]

 In the finder structure of the present invention, a power switch is integrally provided as a means for switching the photographing size, and a mask for moving the viewfinder of the finder forward and backward by the switching means is provided, and when the power switch is turned off, A mask is used to close almost the entire field of view of the finder.

[0006]

【Example】

 Next, the present invention will be described with reference to the drawings. FIG. 2 is a perspective view of a camera to which the present invention is applied, viewed from the rear side, and a viewfinder 2 is arranged on the upper part of the body 1 of a lens shutter type camera. Further, a slide type power switch 3 is arranged at a position adjacent to the finder 2. The power switch 3 can be switched in three steps and has a function of switching between a panorama mode and a standard mode in addition to a function of turning on / off the power. That is, when the power switch is operated to switch between the panorama mode and the standard mode, for example, a zoom motor (not shown) provided in the camera body is driven to adjust the focal length of the lens and the shape of the aperture to each shooting size. It can be configured to automatically switch to one. Incidentally, 4 is a camera display unit.

FIG. 1 is a perspective view of essential parts showing a related configuration of the power switch 3 and the finder 2. The power switch 3 has sliders 31 that are manually operated at three positions in the left-right direction with respect to the camera body. The slider has an operating portion 32 integrally formed on the front surface, and a cam portion 33 protruding from the upper surface. An A switch 34 and a B switch 35 are provided on the camera body side facing the cam portion 33 so that the slider 31 moves. They are arranged side by side. Then, the cam portion 33 sequentially engages with the A switch 34 and the B switch 35 according to the moving position of the slider 31, and the respective switches can be turned on.

On the other hand, the finder 2 is provided with a pair of masks 22A and 22B which are moved up and down while both side edges are guided by the left and right finder frames 21. The masks 22A and 22B are arranged so as to sandwich the finder 2 between them, and one ends of links 23A and 23B are pivotally attached to the masks 22A and 22B, respectively. The other ends of the links 23A and 23B are coaxially and pivotally attached to a part of the slider 31 of the power switch 3.

According to this configuration, when the power switch 3 is off, the slider 31 is at the left position in FIG. 3A and the cam portion 33 is the A and B switches 34 and 3 as shown in FIG. 3A. 5 is not engaged and each switch is off. At this time, since the other ends of the pair of links 23A and 23B are located on the leftmost side, the one ends are brought close to each other, whereby the masks 22A and 22B are moved to the upper and lower center positions of the finder frame 21, As shown in FIG. 4A, the field of view of the finder 2 is almost blocked by both masks 22A and 22B.

When the slider 31 of the power switch 3 is operated to the right by one step, the slider 31 is moved to the central position and the cam portion 33 is engaged only with the A switch 34, as shown in FIG. Turn on 34. When the A switch 34 is turned on, a panorama size image is displayed on the camera display unit 4, or the focal length of the lens is set to a short state. At the same time, since the other ends of the links 23A and 23B are moved to the right side, the masks 22A and 22B are moved upward and downward, respectively, and the upper and lower parts of the finder 2 are moved as shown in FIG. 4B. Close to make the viewfinder view horizontally long for the panoramic size.

Further, when the slider 31 is operated to the right by one step, the slider 31 is located on the rightmost side, and the cam portion 33 also engages with the B switch 35, as shown in FIG. 3C. The B switch 35 is turned on together with the A switch 34. When the B switch 35 is turned on, the standard photographing is displayed on the display unit 4, the focal length of the lens is set to the standard, or any zooming is possible. At the same time, the other ends of the links 23A and 23B are moved to the rightmost side, and the masks 22A and 22B are moved upward and downward as much as possible, and the finder 2 is moved as shown in FIG. 4 (c). The entire field of view is opened and a standard size field of view is created.

Therefore, in this finder structure, the masks 22A and 22B move up and down in conjunction with the operation of the power switch 3 to change the field of view of the finder 2. Therefore, the shooting state of the camera and the field of view of the finder are automatically changed. One-to-one correspondence with can be taken appropriately. When the power switch 3 is off, the masks 22A and 22B completely close the viewfinder windows, so when the user looks into the viewfinder, the mask is in a dark state and the power switch is immediately recognized to be off. You can do that, and you won't miss a photo opportunity due to incorrect recognition.

FIG. 5 is a diagram showing another embodiment of the present invention, in which a rotary type power switch is used. By turning the knob 51 of the power switch 5, the power can be turned off, the panorama mode and the standard mode can be switched. An arm 53 is made to project in the radial direction on the rotary shaft 52 which is interlocked with the knob 51, and the other end of the link 23A, 23B connected to the masks 22A, 22B configured in the same manner as in the above-mentioned embodiment at the tip of the arm 53. Is pivoted. Therefore, in this structure, when the knob 51 of the power switch 5 is rotated to switch the switch, the arm 53 is rotated accordingly, which moves the links 23A and 23B to move the masks 22A and 22B up and down. , The viewfinder 2 field of view can be switched between fully closed, panoramic size and standard size. As a result, the finder is fully closed by the mask when the power is turned off, so that the user can recognize the power off, as in the above-described embodiment. In each of the above-described embodiments, the finder field is set to a substantially completely closed state by the mask when the power is off, but it may be closed so that the user can recognize that the power is off. May be

[0014]

[Effect of device]

 As described above, according to the present invention, the mask is provided to limit the field of view of the finder in conjunction with the power switch, and when the power switch is off, the mask closes the field of view of the finder so that the user can look into the finder. As a result, it is possible to immediately recognize that the power is turned off and never miss a photo opportunity. This has the effect of improving the usability of the camera.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a main part of an embodiment of a finder structure of the present invention.

FIG. 2 is a rear view of a camera to which the present invention is applied.

FIG. 3 is a front view of a main part for explaining the operation of the structure of FIG.

FIG. 4 is a diagram showing a viewfinder field state in each operation state of FIG. 3;

FIG. 5 is a front view showing the configuration of another embodiment of the present invention.

[Explanation of symbols]

 2 viewfinder 3 power switch 4 display section 5 power switch 21 viewfinder frame 22A, 22B mask 23A, 23B link 31 slider 33 cam section 34 A switch 35 B switch

Claims (1)

[Scope of utility model registration request] 1. In a camera capable of shooting with different shooting sizes, a power switch is integrally provided with a means for switching the shooting size, and a mask is provided for changing the field of view of the finder by being moved into and out of the viewfinder by the switching means. A finder structure for a camera, wherein the mask closes substantially the entire field of view of the finder when the power switch is turned off.