JPH0753070Y2 - Electronic flash mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an electronic flash mounting device capable of switching the screen of a camera vertically and horizontally without changing the position of the electronic flash.

[Conventional technology]

Conventionally, in handheld photography using an electronic flash (hereinafter referred to as "EF"), it was common to attach the EF to a hotshot provided on the camera side and fix the camera and the EF together for photography. .

[Problems to be solved by the device]

However, in such a conventional E-bottom mounting method, since the camera and the EF are integrally fixed, if the camera is rotated 90 degrees to switch the screen of the camera vertically and horizontally, the EF
Also moves between the upper side and the side of the camera.

As a result, one screen position was illuminated from above.
The EF irradiation light is emitted from the side at the other screen position, and the shadow of the subject changes from the bottom to the side.

In this way, when the shadow appears on the side of the subject, not only does it look very unnatural, but when a group of people is photographed, the person behind is the shadow of the person in front.

In order to avoid this, some photographers connect the EF to the tuning terminal of the camera with a stretchable tuning cord without attaching it to the camera's hot shoe, and hold the camera with one hand,
The other hand may be used to hold the EF above the camera for shooting.

However, with such a method, it is difficult to stably hold the camera and the EF, which often causes camera shake, and it is also difficult to accurately direct the EF irradiation light toward the subject, which may cause uneven illumination. There is.

The present invention has been made in view of the above points, and it is an object of the present invention to provide an EF mounting device that can always hold the EF position above the camera even when the screen of the camera is switched vertically and horizontally.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, this invention rotatably mounts a camera mount that can be held together with a camera on a frame, and at the top of the frame, an electronic flash connected to a camera side tuning terminal and a tuning cord. It is an electronic flash mounting device that is equipped with a hot shoe for use, and by rotating the camera mount 90 degrees around the optical axis of the shooting lens, the screen can be switched vertically and horizontally without changing the position of the hot shoe. The pedestal is provided with a rotation support plate having a ring-shaped bearing portion, an electronic flash attachment plate provided orthogonal to the rotation support plate, and an upper portion of the electronic flash attachment plate. And a lock plate biased in the optical axis direction by a spring, and the camera mount is mounted on the bearing portion. A rotatable ring portion which is rotatably mounted and through which the photographing lens can be inserted, a pedestal of the camera integrally formed orthogonal to the rotatable ring portion, and a circumference of the rotatable ring portion which is divided into four equal parts. It has positioning grooves which are provided at two adjacent positions and into which the lock plate thickness can be fitted, and the distance between the camera mounting surface of the pedestal and the rotation center of the rotary ring portion is determined by the seating surface of the camera and the optical axis. An electronic flash mounting device having a distance equal to the distance between the electronic flash and the electronic flash.

[Action]

With the above configuration, even if the camera mount is rotated 90 degrees and the screen is switched between portrait and landscape, the EF is always located above the camera and the shadow of the subject appears sideways. To be done.

Also, at any screen position, the camera and EF are integrated via the EF mounting device, so it is not necessary to separately hold the camera and EF, and camera shake and EF irradiation direction deviation are reliably prevented. be able to.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view showing the structure of an embodiment of the present invention in a partial cross section, FIG. 2 is a front view thereof, and FIG. 3 is a rear view thereof.

The camera mount includes a mount 10 and a camera mount 20 rotatably mounted on the mount 10.

The gantry 10 forms a rotation support plate 11, and a ring-shaped bearing portion 12 is formed below the rotation support plate 11.

A lock plate 13 is mounted on the upper part of the rotation support plate 11 so as to be slidable up and down, and a spring 14 urges the lock plate 13 downward in the figure, and a slide knob 15 is planted on the lock plate 13. Installed, by inserting the long hole 11a of the rotation support plate 11 to project forward, by pressing the slide knob 15 upward in the figure,
The lock plate 13 can be moved upward against the biasing force of the spring 14.

Further, an EF mounting plate 16 is integrally formed on the upper part of the pedestal 10 orthogonally to the rotation support plate 11, and a hot shoe 7 is provided on the upper part of the EF mounting plate 16 to which an EF (not shown) can be removably mounted, The base of the tuning cord 8 having a spiral stretchability is connected to the contact, and the tuning terminal 9 is attached to the free end of the tuning cord 8.

On the other hand, as shown in FIG. 1, the camera mount 20 has a rotating ring portion that can be rotatably mounted on the bearing portion 12 of the rotation supporting plate 11.
21 and a pedestal 22 formed integrally with the rotary ring portion 21 at right angles to each other. The distance D between the camera mounting surface 22a of the pedestal 22 and the rotation center C of the rotary ring portion 21 can be mounted on the pedestal 22. The distance from the seating surface 1a on the bottom of the camera 1 to the optical axis A of the taking lens 2 is made equal, and the taking ring 2 can be inserted through the rotary ring portion 21.

Then, while attaching the camera tightening screw 23 to the pedestal 22,
As shown in FIG. 3, a pair of positioning pins 24, 24 are planted at predetermined positions on the left and right sides of the camera, and the positioning pins 24, 24 are fitted into the positioning holes on the bottom of the camera to tighten the camera tightening screw.
23 into the tripod screw hole on the camera side to mount the camera 1 on the base 22
Camera locking screw 23 and positioning pins 24, 24 so that the taking lens 2 can be inserted through the rotary ring portion 21 while being fixed to
The position of is set.

In addition, a positioning groove into which the lower end of the lock plate 13 can be fitted in two places that divide the circumference of the outer peripheral portion of the rotary ring portion 21 into four equal parts.
21a are respectively cut so that the camera mount 20 can be locked at two positions rotated by 90 degrees.

Further, a camera mount side release button 25 having a screw hole 25a for cable release is provided at a position corresponding to the camera side release button 3 and the cable attached to the screw hole 25a by pressing the release button 25 or the screw hole 25a. By operating a release (not shown), the release button 3 of the camera 1 is pressed so that the camera side can be released.

To mount the camera mount 20 configured in this way on the gantry 10, the rotary ring portion 21 is inserted from the rear side of the bearing portion 12 of the rotary support plate 11, and the retaining ring 26 is inserted from the front side.
A plurality of set screws 2 are provided so that the rotating ring portion 21 and the retaining ring 26 can be rotated by sandwiching the ring-shaped rib 12a of the bearing portion 12.
It should be fixed integrally by 7.

Next, the operation of the embodiment having the above configuration will be described.

When the camera 1 in the state shown in FIGS. 1 to 3 is fixedly mounted on the base 22, the photographing lens optical axis A of the camera 1 is fixed to the camera mount 20.
The camera 1 coincides with the rotation axis passing through the center C of the rotating ring portion 21, and the camera 1 is fixed in the horizontal screen state to be in the state shown in FIG.

In this state, the EF is attached to the hot shoe 7 and the tuning terminal 9 of the tuning cord 8 is connected to the tuning terminal 4 of the camera 1 and then the slide knob 15 is pushed upward to push the lock plate 13 to the urging force of the spring 14. When the lock plate 13 is moved upward against the above, the lower end portion of the lock plate 13 is separated from the positioning groove 21a of the rotary ring portion 21, and the camera mount 20 becomes rotatable.

Here, when the pressing of the slide knob 15 is released while rotating the camera mount 20 to which the camera 1 is fixed with respect to the base 10 in the clockwise direction in FIG. 2, for example, the camera mount 20 is rotated by 90 degrees. The locking plate 13 is fitted into the other positioning groove 21a by the urging force of the spring 14 and its rotation is blocked, and the camera 1 is fixed in the vertical screen state and brought into the state shown in FIG.

At this time, the tuning cord 8 does not extend due to its elasticity and hinder the rotation of the camera 1.

When the camera mount 20 is rotated in the opposite direction from this state, the horizontal screen state is restored again.

Since the EF is always above the camera in any screen state, the shadow of the subject does not appear laterally. Further, since the rotation axis of the camera mount 20 and the optical axis of the photographing lens 2 are always coincident with each other, and the center of gravity of the camera 1 is usually near the optical axis of the photographing lens, the camera is mounted for switching the vertical and horizontal screens. Even if the table 20 is rotated, the position of the center of gravity of the camera 1 does not move significantly, and the operability is extremely good.

In addition, only the hot shoe is provided on the camera side,
If the tuning terminal is not provided, a well-known adapter for converting the hot shoe into the tuning terminal may be attached to the hot shoe and the tuning terminal on the adapter side may be used.

In the above-described embodiment, in order to make the apparatus as compact as possible, the height of the hot shoe 7 provided on the upper part of the pedestal 10 is kept to the minimum necessary for the camera 1 to be rotatable.

Therefore, the EF illumination has no degree of freedom, the illumination effect may not be sufficient, and the red-eye effect may appear when photographing a person.

In order to solve such a problem, a height changing adapter 30 as shown in FIGS. 6 and 7 may be used.

The adapter 30 has a main body 31 having a U-shaped cross section, and a hot shoe 32 fixed to an upper protruding portion 31a thereof, and the lower protruding portion 31b is provided on both sides of the EF mounting plate 16 of the mount 10. Pair of ribs 31c, 31c slidably fitted in the guide grooves 16a, 16a
To form.

Further, a tightening screw 33 and a stopper screw 34 are respectively screwed to the lower protruding portion 31c from the upper and rear portions, the ribs 31c and 31c are fitted into the guide grooves 16a and 16a, and the adapter 30 is mounted from the rear side, and the stopper screw is attached. When the head of 34 is in contact with the rear wall surface of the EF mounting plate 16 and the tightening screw 33 is screwed in, the lower protrusion 31b is lifted, and the upper surfaces of the ribs 31c and 31c are guided by the guide groove.
The adapter 30 is fixed to the gantry 10 by being pressed against the upper wall surface of 16a.

When the adapter 30 is attached, the contacts of the upper and lower hotshoes 32 and 7 are automatically connected by the connecting cord 35, and the tuning contacts on the camera side are the tuning cord 8, the hot shoe 7, and the connecting cord. EF (not shown) attached to the hot shoe 32 through the 35 and the hot shoe 32
EF emission from a high position is possible.

Therefore, if you prepare various adapters with different heights, you can install the EF at any height.

Instead of this adapter 30, as shown in FIG.
Alternatively, the EF mounting plate 40 may be attached so as to be vertically movable, and the EF mounting plate 40 may be fixed by a tightening screw 41 at a desired position.

Further, the EF mounting plates 16 and 40 or the adapter 30 are composed of two members, and an angle adjusting means capable of vertically changing the angle of the hot shoe is provided between them, or the hot shoe and the EF
If an angle adjustment adapter that has the same function as this is interposed between and, the irradiation light can be accurately directed to the subject during close-up photography, and indirect illumination with bounce light is also possible if necessary. Becomes

[Effect of device]

As described above, according to the present invention, since the hot shoe and the tuning cord are provided on the upper part of the mount for rotatably mounting the camera mount that can be held together with the camera, the camera mount can be rotated 90 degrees. Even if you switch the screen of the camera vertically and horizontally, the EF is always located above the camera. Therefore,
The unnaturalness and inconvenience that the shadow of the subject is laterally generated at any of the vertical and horizontal screen positions are eliminated.

Further, since the camera and the EF are integrated via the EF mounting device, it is not necessary to separately hold them, and it is possible to reliably prevent camera shake and deviation in the EF irradiation direction.

Then, the rotating ring part of the camera mount through which the photographing lens can be inserted is rotatably mounted on the bearing part of the mount, and the distance between the camera mount surface of the base of the camera mount and the rotation center of the rotary ring part is Since the distance between the seating surface of the camera and the optical axis of the taking lens is made equal, by rotating the camera mount, the camera can be guided around the bearing part with a large diameter and rotate very smoothly around the optical axis of the taking lens. It is possible and durability is secured.

Further, since the circumference of the large-diameter rotating ring portion is divided into four equal parts and the positioning groove for inserting the lock plate is provided, it is possible to accurately set the camera position when switching the vertical and horizontal screens.

[Brief description of drawings]

FIG. 1 is a partial sectional side view showing an embodiment of the present invention in relation to a camera, FIG. 2 is a front view thereof, and FIG. 3 is a rear view showing a state in which the camera is removed. FIG. 5 is a perspective view showing a horizontal screen state when the camera is mounted, FIG. 5 is a perspective view showing a vertical screen state of the same, and FIG. 6 is a front view showing an essential part of another embodiment of the present invention. FIG. 7 is a side view thereof, and FIG. 8 is a perspective view showing a main part of still another embodiment of the present invention. 1 ... Camera, 2 ... Shooting lens 3 ... Camera side release button, 4 ... Camera side tuning terminal 7,32 ... Hot shoe, 8 ... Synchronization code 10 ... Cross stand, 11 ... Rotary support plate 12 ... … Bearing part, 13 …… Lock plate 14 …… Spring, 15 …… Slide knob 20 …… Camera mounting base, 21 …… Rotating ring part 22 …… Pedestal, 23 …… Camera tightening screw 24 …… Positioning pin 25 ...... Camera mount side release button 26 …… Retaining ring, 30 …… Adapter

Claims (1)

[Scope of utility model registration request] 1. A camera mount (20) which can be gripped together with a camera (1) is rotatably mounted on a frame (10), and is tuned to a camera side tuning terminal (9) on an upper part of the frame (10). An electronic flash flash connection (7) connected by a cord (8) is provided, and the camera mount (2
An electronic flash mounting device in which the screen (0) is switched 90 degrees around the optical axis (A) of the taking lens (2) to switch the screen vertically and horizontally without changing the position of the hot shoe (7). The mount (10) includes a rotation support plate (11) having a ring-shaped bearing portion (12), and an electronic flash attachment plate (11) provided orthogonal to the rotation support plate (11). 16), a hot shoe (7) provided on the upper part of the electronic flash mounting plate (16), and a lock plate (13) biased in the optical axis direction by a spring (14), The camera mount (20) is mounted rotatably on the bearing portion (12) and is orthogonal to the rotating ring portion (21) through which the taking lens (2) can be inserted. The pedestal (22) of the camera (1) integrally formed, Positioning groove (21) which is provided at two adjacent positions by dividing the circumference of the rotary ring portion (21) into four equal parts and into which the lock plate (13) can be fitted.
a), the distance (D) between the camera mounting surface (22a) of the pedestal (22) and the rotation center (C) of the rotating ring portion (21) is determined by the seating surface of the camera (1) ( An electronic flash mounting device characterized in that the distance between 1a) and the optical axis (A) is made equal.