JPH04353Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a camera in which a strobe light emitting device is built into the camera body, and a strobe light emitting device other than the built-in strobe light emitting device is attached to the camera and used. The present invention relates to a control mechanism that prevents the light emitting section of the built-in strobe from interfering with the attachment of the separate strobe device.

[Conventional technology] Conventional camera accessory mounting seat (hereinafter referred to as "shu")
In contrast, with a strobe light emitting device that is attached to the camera by inserting a mounting foot, the mounting foot is located behind the irradiation surface of the strobe light emitting device in order to bring the irradiation surface closer to the subject. It is normal to have

On the other hand, in a camera that incorporates a strobe light emitting device into the camera body, when the flash is emitted, the light emitting section consisting of the light emitting tube, reflecting member, condensing member, etc. protrudes from the camera body, thereby closing the charging circuit necessary for emitting light. Many of them are designed to make it happen. When the light emitting part is made to protrude upward from the camera body, it is generally called a pop-up type, but like a single-lens reflex camera, a pentaprism is attached to the top of the camera body. In many cases, cameras equipped with a light-emitting device incorporate a light-emitting portion by utilizing the empty space at the front of the light-emitting device, so that the light-emitting portion protrudes upward when the light is emitted, and this is called a swing-up type camera. This type of built-in strobe light emitting device (hereinafter referred to as built-in strobe)
In both cases, in order to save light emission power and improve portability, the light emitting part protrudes from the camera body only when the required light is emitted, and in conjunction with this, the required light emission power is charged to the capacitor, and when not in use, The light emitting section is housed within the camera body to reduce its bulk, and at the same time the charging circuit is opened to serve as a power saving means.

[Problems to be solved by the invention] With such a camera with a built-in strobe, it is not possible to meet the request for shooting with a large amount of light due to the space limitations of the strobe light emitting device that can be incorporated into the camera. In addition, sometimes the rechargeable battery for the built-in strobe installed in the camera is exhausted and cannot produce the desired amount of light, or the time required to charge it is extremely long. In such a case,
There are times when it is necessary to attach and use a strobe light emitting device other than the built-in strobe using the above-mentioned shoe. However, when the built-in strobe is in use, that is, when the light emitting part is in the use position protruding from the camera body, if you try to use it by attaching another strobe light emitting device, this separately installed strobe light emitting device will not work properly. If the mounting foot of the separate strobe light emitting device collides with the light emitting part of the built-in strobe and cannot be fully inserted into the camera shoe, resulting in a poor connection with the synchro terminal built into the shoe. I've been there before.

Therefore, in this invention, when the built-in strobe is in use and its light-emitting part protrudes outside the camera body, when another strobe light-emitting device is attached to the shoe, the built-in strobe's light-emitting part is automatically disabled. It is an object of the present invention to provide a built-in strobe control mechanism for a camera that can be stored in a normal position and used as a separate strobe light emitting device.

[Means for solving the problem] Therefore, in the present invention, when the mounting foot of the separate strobe light emitting device is inserted into the shoe attached to the camera body, the built-in strobe that is protruding is The light emitting part is actuated in the return direction so that it moves to a position where it is not in use.

[Function] According to the present invention having the above configuration, even when the built-in strobe is in use, when the mounting foot of the separate strobe light emitting device is inserted into the shoe, the light emitting unit is stored in the non-use position. The built-in strobe becomes unused. Therefore, even if a separate strobe light emitting device is attached to the shoe while the built-in strobe is in use, each strobe light emitting device will not interfere with each other and the separate strobe light emitting device can operate normally. .

[Example] The present invention will be described in detail below with reference to the accompanying drawings showing the case where the present invention is applied to the above-mentioned swing-up type single-lens reflex camera.

Figures 1 and 2 are side views of a single-lens reflex camera equipped with the control mechanism of the present invention taken along a vertical plane including the photographing optical axis, and Figure 1 shows a separately installed strobe light emitting device. Figure 2 shows the built-in strobe in use.

In the figure, reference numeral 10 denotes an outer cover that covers the pentaprism of the camera body.A shoe 11 is fixed to the top surface of the outer cover 10, and a storage chamber 12 for storing a strobe light emitting unit is provided near the front part 10a of the outer cover. ,
A light emitting section 14 of a built-in strobe is housed within this storage chamber 12. The light emitting unit 14 includes a xenon tube 16a and a reflecting mirror 16b.
There is a dustproof/windproof lens 16 on the front of b that covers these.
It is surrounded by a housing 16 having c.

Leg levers 18 are integrally formed on both sides of the rear end of the housing 16, and the rear ends of the leg levers 18 are rotatably attached to the outer cover 10 via a shaft 20.
The leg lever 18 moves up and down about this shaft 20, and then moves down and returns to its original position. Therefore, the light emitting part 14 is movable between an unused position in which it is housed in the storage chamber 12 and a used position in which it is raised and protrudes from the outer cover front part 10a. When the light emitting part 14 is in the unused position, the upper surface of the housing 16 forms a part of the outer cover 10 and the storage chamber 12 is closed.
Close the opening.

A claw piece 18a is provided on the leg lever 18 near the shaft 20, and this claw piece 18a is located inside the outer cover 10 when the light emitting part 14 is stored in the outer cover front part 10a. In the use state in which the light emitting part 14 is raised upwardly and protrudes above the outer cover front part 10a, it is fitted into a notch 11a formed in the shoe 11 and positioned within the shoe 11.

A helical spring 22 is wound around the shaft 20, and one end of this spring 22 is engaged with the leg lever 18, and the other end is engaged with the outer bottom surface of the outer cover 10, so that the leg lever 1
8 is always biased clockwise in the figure, that is, in a direction in which the light emitting portion 14 is raised and raised from the outer cover front portion 10a.

Reference numeral 24 denotes a lever lever that is swingably attached to the inside of the outer cover 10 via a shaft. The upper part of the foot lever 24 is formed with a claw part 24a that engages with a pin 18b installed in the leg lever 18, and the other end is formed with a groove 24b extending radially around the above-mentioned axis. .

A helical spring 2 is attached to the shaft of the foot lever 24.
6 and engages one end with the foot lever 24 and the other end with a pin implanted in the outer cover 10, so that the foot lever 24 is rotated counterclockwise in the figure, that is, the claw portion 24a is Pin 1 of leg lever 18
It is constantly biased in the direction of engagement with 8b.

A slide button 28 is attached to the side surface of the outer cover 10 so as to be slidable in the horizontal direction, and a part of the slide button 28 is exposed to the outside through a window cut in the outer cover 10. In addition, the slide button 28 has a foot lever 24.
A pin 28a that fits into the groove 24b is implanted.

Therefore, when the photographer slides the slide button 28 from the outside of the outer cover 10 to the left in the figure, the pin 28a of the slide button 28 also slides to the left, and the groove 24b fits the pin 28a. The foot lever 24 rotates clockwise, and the claw portion 24a and pin 1
8b is disengaged. The leg lever 18 released from the restraint by the foot lever 24 moves to the leg lever 1.
The light emitting part 14 is rotated clockwise by the biasing force of the spring 22 pushing up the outer cover front part 10a.
The claw piece 18a of the leg lever 18 enters into the cutout groove 11a of the shoe 11, resulting in the use state shown in FIG. 2.

When the mounting foot 32 of the separate strobe light emitting device 30 is inserted into the shoe 11 from the rear (right side in the figure) in the usage state where the light emitting unit 14 protrudes as shown in FIG. The tip of the claw 18a comes into contact with the claw piece 18a and presses it forward, pushing the leg lever 18 around the shaft 20 against the urging force of the spring 22, so that the light emitting part 14
is rotated in a counterclockwise direction, and the light emitting part 14, which is moved downward by this movement, is housed in the storage chamber 12. Mounting foot 3
2 is completely inserted into the shoe 11, the pin 18b of the leg lever 18 comes into sliding contact with the inclined surface of the claw portion 24a of the foot lever 24, and pushes the foot lever 24 clockwise, thereby causing the claw portion 24a, which has once retreated, to rotate. The light-emitting portion 14 is returned to its non-use position by downward movement, and does not emit light.

Although not shown in the figure, when the light emitting unit 14 is in an unused position, the charging circuit and light emitting switch circuit of the built-in strobe are cut off, and the light emitting unit 14 is turned off.
Of course, when the built-in strobe 4 is in the operating position, the charging circuit and the light emitting switch circuit of the built-in strobe are closed, and the built-in flash emits light in synchronization with the shutter.

Although an embodiment in which the present invention is applied to a single-lens reflex camera has been described above, the present invention is not limited to the above embodiment, and in particular, the light emitting section 14
Various methods can be applied to the above-mentioned pop-up type elevating mechanism and the locking mechanism linked thereto.

[Effects of the invention] As is clear from the above explanation, according to the built-in strobe control mechanism of the invention, if you try to attach another strobe light emitting device to the shoe while the built-in strobe is in use, the strobe light will not fire. Since the mounting foot of the separate strobe light emitting device presses the leg lever that governs the change in the position of the built-in strobe light emitting device, the built-in strobe light emitting device becomes unused, so the separate strobe light emitting device can be reliably attached to the shoe.

Further, since the built-in strobe cannot be put into use when the separate strobe light emitting device is attached to the shoe, the built-in strobe does not operate or emit light inadvertently.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing the main parts of an embodiment of the present invention with a separate strobe light emitting device attached to the shoe, and Fig. 2 shows the main parts of the same embodiment when the built-in strobe is used. FIG. 3 is a cross-sectional view taken along the - line in FIG. 2, and FIG. 4 is a plan view of the shoe in the same embodiment. 10...Outer cover, 11...Show, 12...
Storage chamber, 14... Light emitting part, 16... Housing,
18... Leg lever, 18a... Claw piece, 24... Foot lever, 28... Slide button, 30... Separate strobe light emitting device, 32... Mounting foot.

Claims (1)

[Claims for Utility Model Registration] (1) A storage section for storing a strobe light emitting section is provided in the upper part of the camera body, and the strobe light emitting section is installed in this storage section via a protrusion mechanism, and this light emitting section is installed in the storage section. In a camera that is configured to be displaced between a stored, unused position and a used position where it is projected outside by the protruding mechanism, a separate strobe light emitting device is provided for a shoe mounted near the storage section. A built-in strobe control mechanism for a camera, wherein the protruding mechanism that is moved by inserting a mounting foot of the camera is configured to move the light emitting section toward the stored position. (2) the protruding mechanism is rotatably mounted via a shaft 20 located below the shoe 11;
A leg lever 18 that supports the housing 16 of the light emitting part 14 and a notch groove 11a that is provided protruding near the shaft 20 of the leg lever 18 and bored in the bottom of the shoe 11 when the light emitting part 14 is in the use position. a spring 22 that always biases the leg lever 18 in a direction in which the light emitting section 14 protrudes upwardly toward the use state position; A built-in strobe control mechanism for a camera according to claim 1, which includes a locking member for holding and fixing in this state.