JP2002072299A - Stroboscopic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a miniaturized stroboscopic device. SOLUTION: This stroboscopic device equipped with an auxiliary light projecting device for focus detection 30, is provided with a battery housing chamber 50 surrounding the outer periphery of the device 30 by a J-shaped recessed part 50b by coupling plural battery cases to form almost J-shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flash device having an auxiliary light projecting device for focus detection.

[0002]

2. Description of the Related Art In a conventional strobe device, in order to increase the distance measurement accuracy of a camera, an auxiliary light for projecting auxiliary light (contrast pattern) toward an object when the object has low brightness or low contrast. A device equipped with an optical device is known. In this type of strobe device, in consideration of the design of the device or the strength of the battery cover, four batteries Bt serving as a driving power source are arranged in a vertical line as shown in FIG. 11 (b)
Although they are arranged in two rows vertically and two rows horizontally as shown in (c), the height of the entire strobe device (the length in the vertical direction in FIG. 11) is undesirably high in these battery arrays. Was. However, if an attempt is made to reduce the size of the strobe device, the space inside the device is reduced, so that the arrangement positions of the main condenser 41 and the auxiliary light emitting device 30 for strobe light emission are limited. Therefore, as shown in FIG. 11D, it is necessary to use a main capacitor 41 'having a small capacity which can be juxtaposed beside the auxiliary light emitting device 30, or to provide no auxiliary light emitting device. Therefore, even if the strobe device can be downsized, the main capacitor 41 '
However, when the camera is used, the amount of strobe light is reduced, and when the auxiliary light emitting device is not provided, it is impossible to improve the distance measurement accuracy.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a downsized strobe device.

[0004]

SUMMARY OF THE INVENTION An electronic flash device according to the present invention includes an auxiliary light emitting device for projecting auxiliary light for focus detection toward a subject, a battery capable of being inserted and removed, and a battery inserted thereinto, which is connected to the auxiliary light emitting device. It is characterized in that a battery housing portion for housing the outer periphery of the optical device is provided. According to this configuration, the battery can be stored in the device with good space efficiency, and even a strobe device equipped with an auxiliary light emitting device for focus detection can be downsized without reducing the amount of strobe light.

In the above-described strobe device, the battery has a cylindrical shape, and the battery housing is formed in a substantially rectangular shape by connecting a plurality of substantially cylindrical battery cases for housing one battery. It is preferable that the substantially U-shaped concave portion is fixed so as to surround the outer periphery of the auxiliary light emitting device.
Further, it is preferable that the battery accommodating portion is formed along at least two of the back, upper and lower surfaces of the auxiliary light emitting device.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 show a first embodiment of a strobe device to which the present invention is applied. The strobe device 10 includes a main body 20 having a connection terminal 21 connected to an accessory shoe of a camera.
The light-emitting unit 40 is rotated via the rotation shaft 42.

FIG. 1 is an external view of the back surface of the strobe device 10. On the back of the main unit 20, there is an LCD for displaying various information.
A display panel 22, a main switch 23 for switching on / off the power of the strobe device 10, a synchro mode switch 24 for selecting the first curtain / second curtain sync, and a plurality of operation buttons 25 operated when selecting each function. Is provided.

FIG. 2 is a front external view of the strobe device 10, and FIG. 3 is a partially cutaway view of FIG. The main body unit 20 includes a transmission panel 31 substantially at the center of the front, and an auxiliary light emitting device 30 for focus detection is provided behind the transmission panel 31. As shown in FIG. 4, the auxiliary light projecting device 30 includes a substrate 32 connected to a CPU (not shown) of the camera, an LED 33 serving as a light source,
A chart 34 for generating a contrast pattern in the light emitted by the ED 33 and an auxiliary projection lens 35 are provided.
The LED 33 is energized through the substrate 32 and emits light when the camera (CPU) determines that auxiliary light is necessary, for example, when the brightness or contrast is low. LED33
Is emitted from the transmissive panel 31 through the chart 34 and the auxiliary light projecting lens 35 to irradiate the subject. On the other hand, although not shown in detail, the light emitting unit 40 includes a Fresnel lens 40a, a xenon tube, a reflector, and a main condenser 41 in this order from the front. The main condenser 41 is a condenser for strobe light emission, and has a substantially cylindrical shape. Strobe light is Fresnel lens 4
It is emitted from 0a toward the subject.

FIGS. 5 and 6 are external views of the left side of the strobe device 10. FIG. An opening 50 a of a battery storage chamber 50 for storing four cylindrical batteries Bt is provided on a side surface of the main body 20.
Are formed. A battery cover 51 (FIG. 7) is provided in the opening 50a.
Is removable. The battery cover 51 closes the battery storage chamber 50 when mounted, and is integrated with the side surface shape of the main body 20. When the battery cover 51 is removed, the battery can be inserted or removed.

[0010] The battery storage chamber 50 is provided in the main body 2 in FIG.
The battery case formed in a cylindrical shape extending in the left-right direction
These battery cases have a substantially rectangular shape (substantially L shape) in FIG. This battery storage room 50
A substantially L-shaped concave portion 50b is fixed in the main body 20 so as to surround the outer periphery of the auxiliary light emitting device 30 (FIG. 9). On the other hand, the battery Bt is inserted into or taken out of the battery storage chamber 50 from the positive or negative end via the opening 50a.
The battery Bt is stored in a substantially rectangular shape based on the shape of the battery storage room 50 in a state of being inserted into the electronic storage room 50. Therefore, the space in the main body 20 can be used efficiently,
It is possible to reduce the size of the strobe device as compared with the related art in which four batteries are arranged in one row or two rows.

As shown in FIG. 7, the battery cover 51 is formed in a substantially rectangular shape, and has a locking claw 51a protruding from one edge in the longitudinal direction. The locking claw 51 a engages with a locking groove 53 formed between the outer wall surface 52 of the battery storage chamber 50 and the outer surface of the main body 20, and holds the battery lid 51 attached to the main body 20. A finger hook 51b is formed on the battery cover 51 so that the battery cover 51 can be easily attached and detached.

In the first embodiment, a plurality of battery cases are connected to form a substantially rectangular shape, and the substantially rectangular concave portion 5 is formed.
Since the battery housing chamber 50 surrounding the outer periphery of the auxiliary light projecting device 30 is provided at 0b, the battery Bt is housed in the main body 20 with good space efficiency.

FIG. 10 shows a second embodiment of a strobe device to which the present invention is applied. Members substantially the same as those in the first embodiment are denoted by the same reference numerals. This second
The embodiment is different from the first embodiment in that the orientation of the battery
In this configuration, the battery storage chamber 50 is disposed upside down, and is substantially the same as the first embodiment except for this point. According to the second embodiment, effects similar to those of the first embodiment can be obtained.

Although the embodiment in which four batteries are housed has been described above, the present invention is not limited to this, and the present invention can be applied to a case where five or more batteries are housed. In this case, if the battery is housed along at least two of the rear, upper and lower surfaces of the auxiliary light emitting device, the battery can be housed in the main body with good space efficiency even if the number of batteries increases. it can. For example, the battery storage chamber may be formed in a U-shape, and the batteries may be stored so that the upper and lower surfaces or the back surface of the auxiliary light emitting device 50 are surrounded by the U-shaped recess.

[0015]

According to the present invention, the battery storage portion for storing the inserted battery so as to surround the outer periphery of the auxiliary light emitting device is provided, so that the battery can be stored in the device with good space efficiency.
Therefore, even a strobe device equipped with an auxiliary light emitting device can be downsized without reducing the amount of strobe light.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a strobe device to which the present invention is applied.

FIG. 2 is an external front view of the strobe device.

FIG. 3 is a partially cutaway view of FIG. 2;

FIG. 4 is a diagram showing a schematic configuration of an auxiliary light emitting device provided in the strobe device.

FIG. 5 is a left side view of the appearance of the strobe device (with a battery cover attached).

FIG. 6 is a left side view of the external appearance of the strobe device (with a battery cover removed).

FIG. 7 is a view showing a battery cover provided in the strobe device.

FIG. 8 is a right side view of the appearance of the strobe device.

FIG. 9 is a partially cutaway view of FIG. 8;

FIG. 10 is a view showing a second embodiment of a strobe device to which the present invention is applied.

FIG. 11 is a diagram illustrating a battery arrangement in a conventional flash device.

[Explanation of symbols]

 Reference Signs List 10 Strobe device 20 Main unit 21 Connection terminal 22 LCD display panel 23 Main switch 24 Synchro mode switch 25 Operation button 30 Auxiliary light emitting device 31 Transmitting panel 32 Board 33 LED 34 Chart 35 Auxiliary light emitting lens 40 Light emitting unit 40a Fresnel lens 41 Main condenser 42 Rotating shaft part 50 Battery storage chamber 50a Opening 50b Depressed part 51 Battery lid 51a Shaped claw 52 External wall surface 53 Shaped groove

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Jun Kidera 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Gaku Kogyo Co., Ltd. F-term (reference) 2H053 BA82 CA18

Claims (3)

[Claims] An auxiliary light projecting device for projecting auxiliary light for focus detection toward a subject; and a battery which can be inserted and removed so that the inserted battery surrounds the outer periphery of the auxiliary light projecting device. And a battery accommodating portion for accommodating the strobe. 2. The strobe device according to claim 1, wherein
The battery has a cylindrical shape, and the battery accommodating portion is formed in a substantially rectangular shape by connecting a plurality of substantially cylindrical battery cases accommodating one battery, and the substantially rectangular concave portion is formed. Is a flash device fixed so as to surround the outer periphery of the auxiliary light emitting device. 3. The strobe device according to claim 1, wherein
A strobe device wherein the battery accommodating portion is formed along at least two of the back, upper and lower surfaces of the auxiliary light emitting device.