JPS6358326A - Confirming device for light emission of stroboscope - Google Patents

Abstract

PURPOSE:To easily confirm whether or not an stroboscope main body emits light by guiding part of light to the finder of a camera by an optical guide part provided to a camera body additionally. CONSTITUTION:The stroboscope main body 10 equipped with the light guide plate 30 is mounted on a top body panel projected on the camera body. A light guide 27 is provided in the front of the top body panel 4 and external light is guided in directly unless the stroboscope 10 is mounted to light the finder. When the stroboscope 10 is mounted, the external light is obtained from the light guide plate 30 on the top surface of the stroboscope 10 and guided in the light guide 27 through optical paths 30b and 30a. When the stroboscope 10 emits light, part of the flash light is guided to the light guide by light guide plates 30b and 30a from a flash light source 31 through the slot of a reflection part 32 to illuminate the finder. Consequently, the light emission of the stroboscope 10 is confirmed to eliminate misexposure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a strobe light emission confirmation device suitable for use in a camera equipped with a strobe device for flash photography.

[Conventional technology]

Strobe devices, also known as electronic flash devices, are necessary for taking appropriate photographs indoors or at night, and are either attached to the camera body or side, or are integrated. Various methods have been proposed in the past.

And flash IJ using such a strobe device!
Shadows were created by checking the charging status of the strobe device using a confirmation lamp, then looking through the viewfinder, focusing, etc., and operating the release switch.

[Problem that the invention seeks to solve]

By the way, the problem with flash photography mentioned above is that the photographer usually performs the release operation while looking through the IF, so it is difficult to confirm whether or not the strobe device is flashing at the IF. There was a J-slip that caused problems such as missed shots. That is, 1
-4 Strobe devices may be damaged if you neglect to check that charging is complete and perform the release operation while the battery is insufficiently charged, or if there is a contact failure at the connection to the camera body, etc.
There are times when the flash does not occur due to circumstances such as death, and in such cases, the photographing fails due to insufficient exposure.

This problem is particularly noticeable when performing flash photography indoors with a certain amount of brightness or at twilight.
Did you properly and reliably check the strobe lighting status? ') It is necessary to take some measures.

[Means for solving problems]

In order to meet such requests, the strobe light emission confirmation device according to the present invention has a flash light source installed inside the strobe body, and the leakage light from the strobe flash is reflected into the viewfinder on the camera body side. A light guide plate is provided to guide the light.

[Effect]

According to the present invention, leakage light during strobe flash is guided to the camera body side via the light guide plate.

By making the inside of the viewfinder E" brighter, it is possible to reliably check the strobe light emission state.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

Figures 1 to 6 show a camera-mounted strobe device to which an embodiment of the strobe light emission confirmation device according to the present invention is applied. , the single-lens reflex camera indicated by the symbol l is shown in Figures 191 and 191 from fS3 and Figure 4. The photographing lens 3 is detachably attached to the front of the camera body 2, and the upper center of the camera is attached to the inside of the body 2. It is formed as a raised warship portion 4 to match the shape of a pentaprism (not shown) incorporated in the warship. At the rear of the upper end of the warship section 4, there is provided an accessory shoe 6 having a terminal section 5 that serves as a section for transmitting electrical signals such as a flash start signal and flash condition information to and from the strobe device 10. ing. Note that reference numerals 7.7 in FIG. 4 indicate power terminal portions provided at two locations on the left and right sides of the lens mount portion on the front side of the camera body 2.

Then, the camera-mounted strobe device 1 in this embodiment
0 is attached to the warship part 4 which is raised on the camera body 27 as described above, by loading from the front side of the body 2 as shown in FIG. The strobe body 11 is equipped with a strobe body 11. That is, this strobe main body 11 has an engaged portion (in this embodiment, guide rails 8° 8 provided on both sides of the end of the warship portion 4) formed on the camera body 2 side in the front-rear direction. The engaging portion (in this example, the protruding portion 12.12) that engages with the
is formed, and in this secured state, a locking part (in this embodiment, the operation push button 13 A movable terminal block 14) that can be moved downwardly is provided.

In the figure, reference numeral 15 indicates a light emitting window provided on the front end of the strobe body 11, and reference numerals 16 and 16 indicate 'It!' on the front side of the body 2. , a power terminal 16.16 that is plug-connected to the source terminal portion 7.7. As is clear from FIGS. It is provided so as to protrude from the lower end of the end side. Here, the power terminal parts 7, 7 on the body side into which these power terminals 16, 16 are inserted are configured as shown in a#S FIG. It is constructed such that it is normally closed by an elastic sheet 7b made of resin or the like, and is opened only when the terminal 16, 16 is inserted. That is, the present embodiment exemplifies a strobe device 10 of a type that charges and flashes by using a power source housed in, for example, the bottom of the camera body 2.

Further, in the strobe device 10 according to this embodiment, the rear part of the main body 11 corresponds to the fP:, part 4, and the fP.
The lower surface is formed with a recess so as to cover the side parts, and the front block part 11a on the front side is located on the front side of the warship part 4, and the lower part is attached so as to avoid the photographing lens 2. It is formed with a curved surface. Here, reference numeral 17 in FIG. 1 is a capacitor built into the strobe main body 11, and other parts necessary for the strobe are appropriately built into this main body 11.

The camera-mounted strobe device 10 having such a configuration has the strobe main body 11 connected to the camera body 2.
From the n2 side, slide rail 8,
8 and the protruding portion 12.12, the slide is loaded as shown by arrow A in FIG. By preventing IF from being removed from the body 2, it can be easily, reliably, and stably attached to the upper and front portions of the warship section 4.

Here, - the L downward movement operation of the movable terminal blowing lever 14 by the operation push button 13 as the locking part described above is performed as shown in FIGS. 1 and 5.
A simple explanation will be given using the figure and fi6 diagram. That is,
In the figure, reference numeral 20 indicates a shaft portion that descends while rotating through a low hole 21a portion of a lock plate portion 21 formed on the strobe body 11 side when pressed by the push button 13; energizing return spring, 23
is a mark member which is attached to the lower part of the push button 13 and colored red or the like to make it possible to identify whether the push button 13 is in a depressed state. The movable terminal block 14 is provided at the lower end of the shaft 20, and engages with or disengages from the recess 6a formed by the accessory shoe 6 in accordance with the downward movement of the shaft, and when it is lowered, the movable terminal block 14 The terminal 24 built into the accessory shoe 6 is configured to selectively contact the terminal portion 5 provided on the accessory shoe 6 to perform signal transmission. Such operation will be easily understood from FIGS. 1 and 6.

What is required of the lock plate part 21 on the body 2 side that supports the shaft part 20 described above is that it can be lowered by pressing the push button 13 to obtain the engaged state by the movable terminal block 14, and , by maintaining the low and low state, and by operating such as rotating the push button 13, the locked state can be released and returned to the initial state. It is sufficient to adopt a lock structure protrusion as appropriate. Here, in this embodiment, as shown in FIG. 5, the instruction mark 25 on the push button 13 side is rotated and locked from the free mark 26a on the fixed side to the lock mark 26b, and is also rotated in the opposite direction. This figure shows a configuration in which a free state is achieved by returning the robot to its original position.

According to such a strobe device 10, the center of gravity of the strobe part is low and compact when the strobe device is installed, and this makes it possible to obtain a strobe device that does not affect photographing operations. Moreover, since it is installed in a good manner so as to cover the 4 portions of the body warship section, it has the advantage of being able to have an external shape that does not give an unnatural feeling. # In addition, with this configuration that skillfully utilizes the space above and in front of the body warship section 4, there are no problems such as a high center of gravity or bulkiness as in the past, and even when carrying around, etc. It can be easily and stylishly carried as it is.

Further, in the above-mentioned camera 1, a light guide 27 is usually provided on the front of the body warship section 4 as a light source, and when looking through the finder 28, it illuminates the data display section at the periphery of the screen. However, in the above-mentioned strobe device 10, the light guide 27 portion becomes faded and data cannot be displayed by illumination as it is. For this reason, in this embodiment, a light guide plate 30 made of, for example, a transparent synthetic resin material is disposed on the −L side of the strobe body 11, and this
It passes through the interior and has its end 30a opposed to the light guide 27 of the warship section 4, thereby making it possible to appropriately and reliably introduce outside light into the finder 28.

Now, according to the present invention, in the camera-mounted strobe device 10 having the above-described configuration, in the strobe body 11, a flash light source (discharge tube or the like) 31 is installed on the back side of the reflecting section 32, as shown in FIG. As shown in Fig. 2, the leakage light from the strobe flash can be detected by
It is characterized by the fact that it faces the light guide plate 30 that guides the inside. Here, according to this embodiment, a case is shown in which the light guide plate 30 that guides the above-mentioned external light to the light guide 27 of the body warship part 4 is used for 11f, and its practical effect is Although this is a large number, it is clear that it is not limited to this.

In addition, 33 in the figure is a light shielding plate disposed between the light guide plate 30 so as to cover the back side of the reflection unit 32, which is formed by holding the flash light source 31 with a leaf spring 34 or the like. As shown in FIG. 2, the light shielding plate 33 has a space formed in the reflection plate constituting the 1 reflection part 32, such as a part for attaching the end part of the flash light source 31i4 and the plate spring 34 for attaching it. Therefore, the amount of light leaking to the back side during the flash is too large,
This is to prevent the inside of the finder 28 from becoming brighter than necessary, and may be used selectively as needed.

According to such a configuration, the leaked light during the strobe flash goes around the light shielding plate 33 portion, a part of it is guided to the camera body side via the light guide plate 30, and momentarily passes through the viewfinder 28. This allows the photographer to easily and reliably check the strobe light emission state while looking into the finder 28.

Therefore, when the strobe does not flash, it becomes possible to take measures such as taking a picture again, and eliminates the conventional problem of failure to take pictures.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified or changed as appropriate. For example - in the embodiment described above, a strobe device;!
1io, a type in which the strobe main body 11 is attached from the front side of the camera body so as to cover the upper side and front side of the warship part 4 of the body h section is used. With such a strobe device 10, flashing conditions are particularly difficult to photograph. This has a great advantage because it is difficult to see from the person's side, but the present invention is not limited to this, and it may be a camera-mounted or integrated strobe having various conventionally known structures and shapes.
It is easy to understand that the effect can be achieved even when applied to 1. In this case, the structure of the introduction part of the leaked light to the light guide plate and the introduction part to the camera body side, and the arrangement position etc. It may be selected as appropriate and necessary.

〔Effect of the invention〕

As explained above, according to the strobe light emission confirmation device according to the present invention, the leakage light from the strobe flash is reflected into the viewfinder on the camera body side by directing the leaked light from the strobe flash to the back side of the reflection part in which the flash light source is installed inside the strobe body. Although the structure is simple and inexpensive, the photographer can easily and appropriately check the light emission status during strobe flash while looking through the viewfinder, which is better than the conventional method. This has various excellent effects, such as eliminating the problem of photographers not noticing that there is no flash, and missing shots.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing a strobe device to which a strobe light emission confirmation device according to the present invention is attached to a camera body, and FIG. 2 is an exploded perspective view showing the configuration of its main parts. Fig. 3 is a schematic exploded perspective view for explaining how the camera-mounted strobe device to which the present invention is applied is loaded into the camera body, Fig. 4 is a front view of the camera equipped with 32 strobes, and Fig. 5 is A schematic plan view showing the operation push button part as the part 1E of the strobe device, FIG. 6 is the operation 1i.
Condition 1! ,! FIG. ■・・・-eye reflex camera, 2...camera body. 4...11 (Original part, 6...Accessory shoe, 7...'Ichigen terminal part, lO...Camera-mountable strobe device, 11...Strobe body, 15 ...
- Light emitting window section, 16...Power terminal, 27...Light guide, 28...Finder, 30...Light guide plate, 31...Flash light source, 32...Reflection Part, 33
... Light shielding plate.

Claims (1)

[Claims] Strobe light emission characterized in that a light guide plate is provided on the back side of a reflective part in which a flash light source is installed in a strobe body attached to a camera body, which guides leaked light from the strobe flash into a finder on the camera body side. Confirmation device.