JPS60189734A - Setting device for light emission condition of flash discharge bulb - Google Patents

Abstract

PURPOSE:To simplify the structure and to reduce the size as much as possible by moving sliding members composed of the 1st-the 3rd sliding plates which are provided with a film sensitivity scale, a stop scale, a photographic distance display, a light emission quantity setting scale, etc., mutually in parallel. CONSTITUTION:A guide number dial 10 is so constituted that the three sliding members composed of the 1st sliding plate 20 provided with the film sensitivity scale and stop scale in parallel, the 2nd sliding plate 30 which has the photographic distance display corresponding to the stop scale and is slidable according to a set value of the quantity of light emission, and the 3rd sliding plate 40 which has selection window 41 and 42 for the stop scale and corresponding photographic distance display to be set and operates associatively with a stop condition setting circuit are moved mutually by operating operation knobs 22 and 32, and 51 and 52, so when many graduations on the scale are provided, the structure does not become complicate, the device itself is reduced in size, and gradations are displayed closely. Consequently, each graduation is viewed easily and this is convenient to operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light emission condition setting device for a flash discharge light emitting device used for photography.

This type of light emitting condition setting device is widely known as a so-called guide number dial, and today, it is made by sliding a plurality of scale plates vertically or horizontally and interacting with each other. film sensitivity scale,
Those with a vertical or horizontal structure that display an aperture scale or a distance scale are often used.

By the way, in a guide number dial having such a structure, as the number of scale steps (for example, the number of steps of the aperture scale and distance scale) increases, the number of plates must be increased, and if the number of plates is limited, It is necessary to increase the size of the plate.

For this reason, the guide number dial described above tends to be large in size, and its mounting position is restricted. For example, in a grip-type flash discharge light emitting device, it cannot be mounted on the top or side of the light emitting body provided at the top of the grip. This has the disadvantage that both scale reading and operability are inconvenient.

On the other hand, due to the structure of the conventional guide number dial described above, the intervals between each scale row are wide (for example, the distance between the aperture scale and the distance scale, and between the distance scale and the light emission setting scale are wide, so it is difficult to compare). The drawback is that the scale is difficult to read.Therefore, there are many straight lines between the scale rows to display the corresponding scale positions, but the symbols, lines, etc. get mixed up, making the dial surface complicated. , it is not necessarily easy to read.

The present invention solves the above-mentioned drawbacks.The first purpose is to simplify the structure and reduce the size as much as possible, and the second purpose is to make the intervals between each scale row close to each other so that the corresponding scale can be read. The goal is to make it easier.

Therefore, in the present invention, the first sliding plate has a film sensitivity scale and an aperture scale attached in parallel, and a shooting distance display corresponding to the aperture scale, and the first sliding plate has a film sensitivity scale and an aperture scale attached in parallel, and the first sliding plate has a photographing distance display corresponding to the aperture scale, and the first sliding plate has a film sensitivity scale and an aperture scale attached in parallel. a third sliding plate which has a selection section for selecting an aperture scale to be set and a corresponding photographing distance display and is linked to an aperture condition setting circuit; and a film sensitivity scale. A flashlight comprising a fixed display section for specifying the light emission condition, and the first, second, and third sliding plates are moved in parallel to enable setting and reading of the light emission conditions. We propose a light emission condition setting device for discharge light emitters.

Further, the dependent inventions of the present invention can be easily understood from the examples described below.

An embodiment in which the light emitting condition setting device of the present invention is implemented in a grip type flash discharge light emitting device will be described below.

Fig. 1 is a perspective view partially showing a grip type flash discharge light emitting device, Fig. 2 is a partial rear view of the flash discharge light emitting device, Fig. 3 is a partially enlarged view of Fig. 2, and Fig. 4 is a partially enlarged view of the flash discharge light emitting device. The figure is a cross-sectional view taken along the line A-A in Figure 3, Figure 5 is a partial cross-sectional view taken along the line B-B in Figure 3, and Figure 6 is an exploded view showing the components of the guide number dial. FIG.

In these figures, 1 is a light emitter body, 2 is a grip, 3 is a light emitter receiver integral with the grip 2, and 4 is a U-shaped frame 4 for attaching the light emitter body 1 to the receiver 3. .

The grip 2 includes a bracket (not shown) on the lower side, and this bracket is fixed to the bottom surface of the camera. Also,
The light emitter body 1 is equipped with a zoom head 1a, and the illustration shows a state of wide-angle illumination.From this, advancing the head 1a a certain distance will change the standard illumination angle, and further advancing the head 1a will change the telephoto illumination angle. Become. On the other hand, the light emitting part of the light emitter body 1 can be intermittently rotated in the horizontal and vertical directions.

The grip type flash discharge light emitting device constructed in this way is well known.As can be seen from FIGS. 2 and 3, the guide number dial 10 is provided on the back side of the light emitting device receiving portion 3. Note that the dial scale is omitted in FIG. 2.

As detailed in FIG. 6, the guide number dial 10 includes a first sliding plate 20 on which a film sensitivity scale row and an aperture scale row are attached in parallel, and a second sliding plate 20 on which a distance scale row is attached. The main components are the plate 30 and a third sliding plate 40 for selecting the aperture scale to be set and the distance scale corresponding thereto.

The first sliding plate 20 has a film sensitivity scale made of ordinary opaque characters, an aperture scale made of transparent characters, and other parts are opaque. A drive plate 21 that moves along a guide rail provided in the light emitting device receiver is detachably fixed to the sliding plate 20, and an operation knob 22 is provided at one end of the drive plate 21.

The second sliding plate 30 is an opaque plate with a distance scale formed in transparent letters, and a drive Fj, 31 that moves on a guide rail provided in the light emitting device receiving portion is detachably fixed thereto.

This drive plate 3I is provided with an operation knob 32.
2 protrudes through the second sliding plate 30. In addition, the second sliding plate 30 may be provided with a distance scale in feet display using transparent characters on the side in parallel with the distance scale row in meter display shown in the figure.

Further, a light emitting amount setting switch 34 is linked to the groove 33 formed in the drive plate 31, which allows the light emitting amount to be manually regulated as full, 1/2, 1/4, etc. , the switch 34 is operated as the second sliding plate 30 slides.

The third sliding plate 40 described above is a strip-shaped thin plate made of an opaque material, and has a selection window 41 for displaying an aperture scale and a selection window 42 for displaying a distance scale arranged side by side in the width direction of the plate. Note that the selection window 41 is a four-sided hole having a size to display one aperture scale, while the selection window 42 is a four-sided hole formed so as to include three adjacent distance scales.

The third sliding plate 40 is assembled so as to be freely movable in the longitudinal direction, and its side portions 40a or 40b extend rearward along the inside of the light emitting device receiver 3 as it moves. . For this reason, it is preferable that the third sliding plate 40 be formed of a thin elastic plate.

Further, the third sliding plate 40 is provided with two small holes 43,44, into which operating knobs 51,52 raised from a moving box 50, which will be described below, are inserted.

The moving box 50 is shown to be movable in the horizontal direction in FIG. 3 according to the guide rail provided inside the light emitting device receiving section, but there is a click stop mechanism in the moving box 5o and the inside of the light emitting device receiving section 3. The moving box '50 is moved in increments according to the scale intervals of the aperture scale and the distance scale. The small sphere 53 and spring 54 in FIG. 4 are constituent members of the click stop mechanism. Illumination windows 55.56 having the same shape as the selection windows 41.42 described above are formed on the surface of the moving box 50 so as to face the selection windows 41.42.

On the other hand, the light emitted from the light emitting diode 57 (see FIG. 4) is emitted from the irradiation window 55, and the light emitted from the light emitting diode 58.
Four light emitting diodes are installed in the moving box 5o so that any of the light emitting diodes 59 and 60 (see FIG. 5) irradiates the moving box 5o. The chevron shaped member provided to cover the light emitting diode 59 is a half mirror 61, and the light emitted from the light emitting diode 58, 60 is reflected by the inclined side of the half mirror 61 and radiated from the irradiation window 56. be. The half mirror 61 has a horizontal portion (the irradiation window 5
6) may be a half mirror, the inclined portion may be a total reflection mirror, and the horizontal portion may be a space.

The above-mentioned light emitting diodes 58, 59, 6o can be used to emit light of different colors. For example, the light emitting diode 58 is configured to emit yellow light, the light emitting diode 59 is configured to emit red light, and the light emitting diode 60 is configured to emit blue light.

A slide switch contact piece 62 is provided on the back side of the moving box 50.
．． 63 is fixed, and the switch contacts 62,63 contact switch contacts on a substrate 70 provided in the emitter receiver. Many switch contacts are lined up on the board 70, and switching is performed as the switch contacts 62 and 63 move, and the aperture condition setting circuit is interlocked with this.

When the guide number dial 10 is assembled, the aperture scale row portion of the first sliding plate 20 and the distance scale row portion of the second sliding plate 30 are located on the back side of the third sliding plate 40, that is, the third sliding plate. 40 and the moving box 50.

Therefore, the aperture scale moves between the selection window 41 and the irradiation window 55, and the distance scale moves between the selection window 42 and the irradiation window 56.

The front surfaces of the first, second, and third sliding plates 20, 30, and 40 described above are covered with a transparent plate 80, as shown in FIG. A decorative board 90 is attached.

As can be seen from FIG. 6, the transparent plate 80 has a convex portion 81 formed in a thin portion that matches the width of the decorative plate 90, and furthermore, this convex portion 81 is provided with an elongated guide hole 82. .

Operation knobs 51 and 52 that stand up from the moving box 50 are inserted into the guide hole 82, and the tips of these operation knobs 51 and 52 slightly protrude from the convex portion 81.

An elongated hole 83 provided on the upper right side of the transparent plate 80 allows insertion of the operating knob 22 for sliding the first sliding plate 20, and an elongated hole 84 provided on the left side allows the second sliding plate 30 to be slid. These insert the operating knob 32 to move the operating knob 22.
There are 32 guide holes.

Also, a through hole 85 formed in the lower left portion of the transparent plate 80
The operation knob 100 of the power switch is protruded, and the through hole 86 is
The switch knob 101 for automatically adjusting light emission (auto) and manual light emission is made to protrude.

As detailed in FIG. 6, the above-mentioned decorative plate 90 has a fitting hole 91 in the convex portion 81 of the transparent plate 80 and an elongated hole 92.93 formed to match the guide hole 83.84 in the transparent plate 80. Further, a scale for setting the amount of light emission is provided near the elongated hole 93. In addition, this decorative plate 90 includes ASA
, F, , m, etc. are attached at appropriate locations.

Next, the operation of the guide number dial 1o described above will be explained.

First of all, when setting the conditions for automatic flash control, please check the operation manual 1.
01 to auto position A and operate the power switch 1
00 to the ON position.

When the power switch is turned on, the light emitting diode 57 immediately lights up, and one of the light emitting diodes 58, 59, and 60 lights up according to the irradiation angle position of the zoom head 1a. That is, when the zoom head 1a is at the wide-angle illumination position, the light emitting diode 58 is turned on, when it is at the standard illumination angle position, the light emitting diode 59 is turned on, and when it is at the telephoto illumination angle position, the light emitting diode 60 is turned on.

Assuming that the zoom head 1a is set at the standard illumination angle position, the light emitting diode 59 lights up immediately upon turning on the power switch.

On the other hand, if each operating knob 22, 32, 51, 52 is in the state shown in FIG.
, l 2.17, the light-emitting diode 57.59 illuminates the aperture scale F=4 and the distance scale 12, and these scales stand out as translucent characters. Note that each scale selected as described above is displayed on the transparent plate 8.
It can be read through the convex surface part 81 of o.

Although the film sensitivity scale is not a translucent character, this scale can also be read through the convex portion 81.

In this way, if the film sensitivity is set to ASA=100 and the aperture value is set to F=4, it can be determined that the effective photographing distance is 12 m.

When the zoom head 1a is set to the wide-angle irradiation position, the light emitting diode 58 lights up and the distance scale 8.5 appears as transparent letters, so under the above conditions, the effective shooting distance is 8.5 m, and the zoom When the head 1a is set at the telephoto irradiation position, the distance scale 17 appears as transparent letters under the lighting of the light emitting diode 60, so under the above condition setting, the effective photographing distance is 17 m.

As already mentioned, if you use light-emitting diodes 58, 59, and 60 that emit light of different colors, the distance scale 8.5 in the wide-angle irradiation setting will be yellow, and the distance scale 12 in the standard irradiation setting will be red. Characters, distance scale 1 at telephoto illumination cent.
7 appears as a blue character, making it easy to identify these scales.

Next, when changing the film sensitivity scale from ASA=100 to 200, move the operating knob 22 to the right in FIG. slide.

FIG. 7 shows this condition setting state, and the third sliding plate 4
The aperture scale F=5.6 appears in the 0 selection window 41. Other operations are the same as in the case of FIG. 3, and settings such as the film sensitivity scale ASA=400.800 are also the same, and the display of the aperture scale changes as the film sensitivity scale changes.

When changing the aperture value condition from the state shown in FIG. 3, the operation knobs 51 and 52 are moved. That is, the third sliding plate 40 is slid by the operating knobs 51 and 52 until the intended aperture scale appears on the selection window 41.

Note that, as described above, the moving box 50 moves together with the third sliding plate 40.

FIG. 8 shows the aperture scale set at F=2.8. As shown in the figure, the distance scale displayed in the selection window 42 changes in response to the new set value of the aperture scale. Other operations are the same as in Figure 3, other aperture scale F = 5.6
．． The same applies to settings such as 8, . . .

Next, when manually emitting light, set the operation knob 101 to M.
Move to position. This operation switches the automatic light emitting circuit to a non-operating state and the manual light emitting circuit to an operable state, but the light emitting diode 57 provided in the moving box 50
．． 58, 59, and 60 are lit.

When the operation knob 32 for setting the amount of light emission is in the full position, the same conditions as above are set, and the operation knob 32 is set to 1/1.
When moving according to the scales of 2.1/4.1/8, . . . , the distance scale displayed in the selection window 42 changes.

FIG. 9 shows a state where the amount of light emission is set to 1/4, and it can be seen that under the conditions of film sensitivity ASA=100 and aperture value F=4, the shooting distance is 6 m.

If the zoom head 1a is set at the wide-angle or telephoto position, this distance will be 4.2 m or 8.5 m.

Note that when performing auto flash following manual flash, or when manual flash is in the cent state, the operation knob 101 is
When the camera is erroneously operated to the auto position A, the photograph may be underexposed unless the operation knob 32 is at the full 1 position.

In other words, if you fire the flash automatically with the operation knob 32 set to the 1/4 scale, the maximum effective distance that can be photographed will be 6 m at the standard flash angle, but the maximum effective distance in the case of automatic flash is determined according to the aperture scale. For example, there is a risk of making a mistake and taking a flash photograph of a subject at a distance of 12 m with an aperture value of F=4. However, since a distance scale according to the set value of the amount of light emission appears in the selection window 42, as long as flash photography is performed according to this distance scale, the above problem will not occur.

The above drawback can be solved by preventing the operating knob 101 from moving to the auto position A unless the operating knob 32 is moved to the ful1 position.

On the other hand, it is possible to configure the camera to automatically emit light while changing the set value of the amount of light emitted.

In this case, the operation knob 101 is moved to the auto position A, and the operation knob 32 for setting the light emission amount is moved to 1/2.1/4.1/
8.Move to one of the following positions.

With this configuration, since the maximum effective distance that can be photographed is determined according to the set value of the amount of light emitted, it is necessary to take pictures using automatic light emission within the range of the distance scale corresponding to the set value of the amount of light emitted. For example, if the luminescence amount setting value is set to 1/4,
Flash photography is required within 6m.

It would be advantageous if the amount of light emission could be set arbitrarily and the flash could be fired automatically, allowing continuous light emission when photographing at close distances.

As described above, the light emission condition setting device according to the present invention has a first
, the second and third sliding plates are the main structural members, and these sliding members are configured to move relative to each other.
Even when providing a large number of scale steps, the structure does not become complicated.
The form of the device itself can be made smaller.

In addition, since each scale, that is, the film sensitivity scale, aperture scale, distance display, and light emission setting scale, are displayed close to each other, the corresponding scales are easy to see and are extremely convenient for operation. .

In addition, in the above embodiment, a case has been described in which the flash discharge light emitter is equipped with an illumination angle control mechanism, but in the case of a flash discharge light emitter without such a control mechanism, the third sliding plate 40 The selection window 42 can be used to display a one-level distance scale, and the distance scale is not necessarily a numerical scale, but may be replaced with a plurality of bars indicating the shooting distance. An illumination light source for illuminating the scales may be provided as necessary, and these scales can be marked with letters of the public examination.

Further, it is optional to implement the light emission condition setting device according to the present invention in a flash discharge light emitting device other than the grip type, or to attach an aperture scale and a distance scale with opaque characters on a transparent sliding plate.

[Brief explanation of the drawing]

The drawings show an embodiment in which a light emitting condition setting device according to the present invention is implemented in a grip type flash discharge light emitting device, and FIG. 1 is a partially cutaway perspective view of the flash discharge light emitting device, and FIG. 3 is a partial enlarged view of FIG. 2; FIG. 4 is a partial sectional view taken along line A-A in FIG. 3; 5 is a partial sectional view taken along line B-B in FIG. 3, FIG. 6 is a perspective view showing the constituent members of the light emission condition setting device, and FIGS. 7, 8, and 9.
The figure is a partially enlarged view similar to FIG. 3 showing the operating state. ■...Light emitter body, 1a...Zoom head, 2...
Grip, 3... Light emitter receiving part, 1o... Guide number dial, 20... First sliding plate, 22... Operation knob, 3°... Second sliding plate, 32...・Operation, 4o・
...Third sliding plate, 41.42...Selection window, 5o...
Movement box, 51.52... Operation knob, 55.56.
...Irradiation window, 57.58.59.60...Light emitting diode, 80 Transparent plate, 90...Decoration board. Patent applicant Zanpasoku Co., Ltd. Figure 2 Figure 4 Figure 6

Claims (6)

[Claims] (1) A first sliding plate having a film sensitivity scale and an aperture scale attached in parallel, and a second sliding plate having a photographing distance display corresponding to the aperture scale, and which is slidable according to the light emission amount setting value. a third sliding plate having a sliding plate, a selection unit for selecting an aperture scale to be set and a corresponding photographing distance display, and interlocking with an aperture condition setting circuit; and a third sliding plate for specifying the film sensitivity scale. A flash discharge light emitting device, characterized in that the first, second and third sliding plates are moved in parallel to enable setting and reading of light emitting conditions. Light emission condition setting device. (2) The light emission condition setting device according to claim (1), wherein the photographing distance display attached to the second sliding plate comprises a distance scale having the same scale interval as the aperture scale. . (3) The light emission condition setting device according to claim 11, wherein the photographing distance display attached to the second sliding plate is composed of a plurality of bars corresponding to each of the aperture scales. . (4) An illumination light source for illuminating the selected aperture scale and photographing distance display is connected to the third sliding plate, so that the aperture scale and photographing distance display are displayed under the illumination. A light emission condition setting device according to claim ti). (5) In a flash discharge light emitting device equipped with a control mechanism for the emission angle, a first sliding plate has a film sensitivity scale and an aperture scale attached in parallel, and a distance scale is attached at the same scale interval as the aperture scale. and a second sliding plate that is slidable according to the light emission amount setting value, an aperture scale to be set, a specific distance scale corresponding thereto, and distances before and after the specific distance scale. It has a selection section that includes a scale for selection,
Further, a light emitting condition setting device is provided, which includes a third sliding plate interlocked with the aperture condition setting circuit, and a fixed display section for specifying the film sensitivity scale, and further includes a light emission condition setting device that is configured to specify the film sensitivity scale and the aperture condition setting circuit. A plurality of illumination light sources are provided, which correspond to the distance scales in the front stage and the rear stage, respectively, and are connected to the third sliding plate, and under normal light emission conditions, the specific distance scale is used to control the light emission irradiation angle. 1. A light emission condition setting device for a flash discharge light emitting device, characterized in that when setting a lower light emission condition, the distance scale of the preceding stage or the latter stage is displayed under illumination of the illumination light source. (6) Claim (2), wherein an illumination light source corresponding to the aperture scale to be set is connected to the third sliding plate, so that the aperture scale is illuminated and displayed together with the distance scale. The light emission condition setting device described.