JPH0743247U - Device for attaching a slide projector to a tripod for a camera - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to use a tripod for a camera as an installation stand for a slide projector. [Structure] A female screw for fixing to a tripod head of a camera is directly attached to the bottom of a slide projector (claim 1). A female screw for fixing to the tripod platform of the camera,
Instead of being attached directly to the bottom of the slide projector, it is attached to the bottom of a plate-like or box-like stand for installing the slide projector (claim 2). The female screw for fixing to the tripod head of the camera tripod is attached to the bottom of the attachment attached to the slide projector instead of directly attaching to the bottom of the slide projector (claim 3).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for mounting a slide projector on a tripod for a camera so that the tripod for the camera can be used as an installation stand for the slide projector.

[0002]

[Prior art]

 All of the commercially available slide projectors examined by the applicant were set up for use on a table or other table, and none of them could be attached to a camera tripod. In addition, the applicant's research on the invention of the slide projector described in the past Japanese Utility Model Bulletin was not related to the device for mounting on a tripod for a camera.

[0003]

[Problems to be solved by the device]

 Since the conventional slide projector needs to be installed and used on a table such as a table, if the height of the installed table and the projection screen does not match, the sliding feet on the front of the projector cannot be used. If you need to adjust the height and change the projection angle, and the height still does not match or the projection angle is too tight and the projection screen is distorted, place a book or box on the bottom of the slide projector to raise the height. It was necessary to adjust the height. Such adjustment of the projection angle and height often requires trial and error, and is quite complicated, and when adjusting the height by stacking books or boxes, a few slide projectors are installed. Problems such as tilting to the side and instability due to improper installation could occur.

[0004]

[Means for Solving the Problems]

 In the case of claim 1: A female screw (5) is attached to the bottom of the slide projector (1), and the slide projector (1) is directly attached to the tripod platform (2) of the camera. In the case of claim 2, a plate-shaped or box-shaped base (3) having female screws attached to the bottom is fixed to a camera tripod platform (2), and a slide projector (1) is mounted on the base (3). ) Is installed. In the case of claim 3, the attachment (4) having a female screw attached to the bottom is fixed to a camera tripod platform (2), and the slide projector (1) is attached to the camera tripod via the attachment (4). To do.

[0005]

[Action]

 With this structure, the slide projector can be easily and firmly installed on the tripod for the camera. It is also easy to remove the slide projector from the camera tripod.

[0006]

【Example】

 In the case of claim 1, as shown in FIG. 1, so that the slide projector (1) can be directly attached to the tripod platform (2) for the camera, near the center of gravity position of the lower part of the slide projector (1), Install the female screw (5 in Figure 4). In the case of claim 2: As shown in FIG. 2, a plate-shaped or box-shaped platform (3) for installing the slide projector (1) is prepared, and a tripod platform for a camera ( Attach the female screw (5 in Fig. 4) for fixing to 2). In the case of claim 3: As shown in FIG. 3, an attachment (4) to be mounted on the slide projector (1) is prepared, and a female for fixing the attachment to the tripod head (2) of the camera at the bottom thereof. Install the screws (5 in Figure 4).

[0007]

[Effect of device]

 Securely mount the slide projector on the camera tripod by inserting and tightening the male screw attached to the camera platform tripod head to the female screw of the device for mounting the slide projector camera tripod of the present invention. You can Since the camera tripod can adjust the height of the platform and adjust the vertical and horizontal angles extremely quickly, accurately, and easily, by attaching a slide projector to it, a slide projector for the projection screen can be installed. The height and projection angle can be adjusted quickly, accurately and easily. It should be noted that the inventor, when projecting a slide shot with a fisheye lens on a flat screen by a slide projector, if the fisheye lens used for shooting was used as the lens of the slide projector, the projection was in a normal perspective. (The straight line is a straight line, and the size of the object is inversely proportional to the square of the projection distance.) (In other words, a slide shot with a normal lens is exactly the same as a projection with a normal slide projector). When the projection angle of the slide projector to the screen is changed (left / right / up / down, etc.), this projection changes naturally as if you looked around by moving the eyeball, and you are in the actual place. It was discovered that a phenomenon such as "you can experience the perception of a three-dimensional space" will occur. Outline collection, see 4059). By the way, in order to change the projection angle of a conventional slide projector, it cannot be done while it is installed on a stand, so it is necessary to hold the slide projector in your hand.In that case, the projection is stable. However, if you could attach the slide projector to a camera tripod, you could smoothly change the projection angle, rather than holding it in your hand. It is possible to obtain a projection that changes stably. This is the second effect of the present invention.

[Brief description of drawings]

1 is a side view of the present invention and claim 1;

FIG. 2 is a side view of the present invention and claim 2;

FIG. 3 is a side view of the present invention and claim 3;

FIG. 4 is a cutaway sectional view of a mounting portion of a tripod head for a camera.

[Explanation of symbols]

(1) is a slide projector (2) is a tripod platform for a camera (3) is a plate-like or box-like base for installing the slide projector (1) (4) is an attachment to be attached to the slide projector (1) (5) is a female screw for fixing the tripod head (2) for the camera

[Procedure amendment]

[Submission date] July 22, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Added

[Correction content]

[Scope of utility model registration request]

Claims (3)

[Scope of utility model registration request] 1. A mounting device for a camera tripod of a slide projector, wherein a female screw for fixing the camera tripod tripod head is directly attached to the bottom of the slide projector. 2. A female screw for fixing a tripod head for a camera to the bottom of a slide projector instead of directly attaching to the bottom of the slide projector. A device for mounting the slide projector of item 1 on a tripod for a camera. 3. The camera of the slide projector according to claim 1, wherein the female screw for fixing the tripod head of the camera is attached to the bottom of an attachment attached to the slide projector instead of directly attaching to the bottom of the slide projector. Device for mounting on a tripod.