JPH0943692A - Camera with built-in electronic flashing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the leakage of a current at the time of flashing in the case where an outside case member covering a flashing unit is journaled on a top cover is made of a metallic member to add a quality appearance to a camera. SOLUTION: A metallic outside case member 21 to which a flashing part cover 22 made of an insulating material is integrally fitted on the inside surface by the fitting of pawls 21a and 21b is fixed by machine screws 35a and 35b, so as to cover the flashing unit 23 journaled (32) on the top cover 41 of a camera body 40, so that at the time of flashing, a high current is prevented from leaking to the metallic outside case member 21 and the camera can be comparatively compactly formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera incorporating an up / down electronic flash device, and more particularly to an insulating structure for preventing leakage of the flash device when a metal is used for the appearance.

[0002]

2. Description of the Related Art Conventionally, a camera having a built-in electronic flash device that moves up and down has a flash device unit to which a light emitting portion of the flash device is attached, which is formed by a plastic material. FIG. 6 shows a camera in which the flash light emitting portion of such a conventional example is casing with a plastic material.
And FIG. 7. An electronic flash unit 3 including a flash light emitting portion is provided on the upper lid 1a of the camera body 1 so as to be covered by an external component 2. The electronic flash unit 3 includes a case 4 having a trigger coil (not shown) and its case. A flash light emitting portion 8 composed of a xenon tube 5, a reflection shade 6 and a front panel 7 is formed in the front part, and is rotatably supported by an upper lid 1a by a support shaft 9 connected to the case 4 and is attached to the case 4. The upper lid 1a is provided in the arc-shaped guide groove 4a provided.
The guide pin 10 provided at the position is engaged so that the up / down operation can be performed between the storage standby position in FIG. 6 and the raised light emitting position in FIG. 7. The xenon tube 5 and its trigger coil control signal line are connected to a control circuit (not shown) in the camera body 1 by a lead wire group 11, and a light emission trigger signal emitted by the trigger coil is directly input to the xenon tube 5 to emit light. I am letting you.

[0003]

By the way, in recent years, a method of using a metal member for the exterior component 2 has been adopted in order to obtain a high-grade feeling, but it is formed of a plastic material as in the above-mentioned conventional example. If the external parts are replaced with metal parts as they are, the following problems occur. Since a large current flows in the electronic flash unit 3 in order to cause the xenon tube 5 to emit light, if a conducting member such as a metal is present nearby, the electronic flash unit 3 will leak during flashing, and the xenon tube 5 will be able to emit light for an appropriate time. It's gone. For example,
It has been known that, as a measure against leakage, the distance between the metal component and the trigger coil to which a voltage of about 5 KV is applied needs to be separated by about 5 mm or more. However, if a distance of 5 mm is attempted, the electronic flash unit becomes large in size, which is not suitable for the miniaturized camera which is the current mainstream. Also,
Since the external parts, which are metal members, are pressed, they do not have the degree of freedom in shape unlike the external parts formed of conventional plastic materials.

In view of the problems of the above-mentioned conventional example, the present invention as set forth in claims 1 to 3 leaks a current flowing at the time of flashing light when a metal member is used for the exterior parts covering the flashing device unit in order to obtain a high quality feeling. It is an object of the present invention to provide a camera with a built-in electronic flash device that can prevent the occurrence of such a phenomenon and can be downsized. It is another object of the present invention to provide a camera with a built-in electronic flash device in which a metal exterior part covering the flash device unit can be easily attached.

[0005]

In order to achieve the above object, the present invention provides a camera with a built-in electronic flash device, in which an exterior member for covering the flash unit pivotally supported by the upper lid is made of metal so as to give a high-class feeling to the camera. The main feature is that the insulating member is interposed between the flash unit and the exterior member in order to prevent current leakage to the exterior member during flash light emission.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention as set forth in claim 1 is a camera having a built-in flash device capable of moving between a storage standby position and a light emitting position. A non-conductive cover member is interposed between a flash unit that is movably supported and has a flash emitting section and a trigger coil fixed thereto, and a metal exterior member that covers the flash unit. Further, in the present invention as set forth in claim 2, the flash light emitting portion comprises at least a front panel portion, a xenon tube, and a reflecting shade. Claim 3
In the present invention as shown in FIG. 3, the non-conductive cover member is molded by plastic and has substantially the same shape as the metal exterior member. Further, in the present invention as set forth in claim 4, the metal exterior member has both or one of a claw portion for hooking on the non-conductive cover or the flash unit or a screw hole portion for fixing. Further, the present invention as set forth in claim 5 is such that the claw portion of the metal exterior member is formed on the outermost portion of the metal exterior member by bending. According to the present invention having the above-mentioned structure, since the non-conductive cover member made of an insulating material such as a plastic material is interposed between the metal exterior component and the flash unit, the flash light emitting unit is provided. It is possible to prevent the electric current flowing when emitting light from leaking to the metal exterior member, and to operate safely. Further, claims 4 and 5
The present invention shown in, since the metal outer member has a claw portion to be hooked to the flash unit, or a screw hole for fixing is opened, the flash unit can be easily attached,
Further, the hook for hooking the metal exterior member can be easily manufactured by bending.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 is an exploded perspective view of a main part of the flash light emitting portion, FIG. 2 is a rear view of the flash light emitting unit, FIG. 3 is an internal top view of the flash light emitting portion, FIG. 4 is a sectional view taken along line AA of FIG. 3, and FIG. It is sectional drawing in the light emission standby position of a flash light emission part. In the figure, reference numeral 21 denotes a trapezoidal frame-shaped metal exterior member which is pressed with an aluminum material, and has inwardly projecting claws 21a and 21b and screw holes 21c and 21d provided at the lower edges of both side surfaces thereof. There is. Reference numeral 22 denotes a flash light emitting unit cover, which is formed of a plastic material and has a shape along the inner surface of the exterior member 21, and is interposed between the exterior member 21 and a flash unit 23 including a flash emitting unit 28 described later. Flash unit 23
Has a role to cover. In addition, since the flash light emitting unit cover 22 is made of a material, a large current flowing during light emission does not leak, and therefore does not leak to the metallic exterior member 21.

Further, the flash light emitting section cover 22 is provided with a pair of downwardly facing pins 22a, 22b and 22c, 22d on its both side surfaces facing the inner surface thereof.
Notches 22g and 22h are formed at the lower edges thereof, and hooks 22e and 2h are provided at the rear lower edges thereof, respectively.
2f is formed. Then, the claws 21a and 21b of the exterior member 21 are engaged with the notches 22g and 22h, and the flash light emitting unit cover 22 is integrated with the exterior member 21 by the elasticity of the material, and the pins 22a, 22b and 22 are formed.
c and 22d are pins 22a, 22b and 22c, 22d on a flash case 24 which constitutes a flash unit 23 described later.
24a, notch hole 24b and hole 2 provided so as to face each other
4c and the cutout hole 24d, respectively, and are positioned for positioning. The hooks 22e and 22f are provided in the flash case 2 respectively.
4 is inserted into the cutout holes 24b and 24d formed in the mounting member 4 and is attached to the flash case 24, and the integrated exterior member 21 and flash light emitting unit cover 22 are attached to the screws 35a and 3d.
It is fixed to the flash case 24 at 5b.

Next, 23 is a flash unit, and a flash case 24, which is a basic structure of the flash unit, is a top cover 41 of the camera body 40.
Is rotatably supported by a support shaft 32 on the flash case 24.
Xenon tube 25, reflector 26 and reflector 2 on the front side of the
A flash light emitting portion 28 including a front panel 27 to which 6 is fixed.
And the trigger coil 29 provided behind it are fixed,
A red-eye alleviating lamp unit 30 including a lamp and a reflecting shade-like socket for irradiating the lamp light is fixed to one side rear surface of the front panel 27 in parallel with the flash light emitting portion 28, and further, a hop-up position is attached to the flash case 24. Detection switch 31
Has been fixed.

Further, the flash case 2 of the flash unit 23
4 is provided with a guide groove 24e in accordance with its rotation locus, the guide pin 41a provided on the upper lid 41 is engaged with the guide groove 24e, and one of the contact pieces of the hop-up position detection switch 31 is It is located on the lower end side. Further, a spring 33 is provided between the flash unit 23 and the upper lid 41, and rotates about the support shaft 32 to move up and down between the storage standby position shown in FIG. 4 and the light emitting position shown in FIG. In the case of carrying out, the storage standby position is biased in the storage direction, and the light emission position is biased in the projecting direction.

Reference numeral 34 is a xenon tube 25 and a trigger coil 2
9. A group of lead wires extending from the lamp of the red-eye reduction lamp unit 30 and the hop-up position detection switch 31, respectively, and from the notch hole 24b of the flash case 24 to the upper lid 4.
It is connected to a substrate (not shown) in the camera body 40 through an opening (not shown).

In this embodiment having the above construction, when the flash unit 23 is rotated from the storage standby position shown in FIG. 4 about the support shaft 32 to the light emitting position shown in FIG. 5, the guide pin 41a of the upper lid 41 is rotated. Is the guide groove 2 of the flash case 24
Since the hop-up position is regulated by contacting the lower end of 4e, the hop-up position of the flash unit 23 is regulated.
At this time, the hop-up position detection switch 31 comes into contact with the guide pin 41a and is turned on, so that the hop-up completion signal is output and the flash emission unit 28 is allowed to emit light. On the contrary, when the flash unit 23 should be in the original light emitting position, if there is no signal from the hop-up position detection switch 31, the camera judges that it is abnormal, and the hop-up position detection switch 31 displays some warning. It also has a role to play. And the flash unit 23
When the flash light is emitted at the hop-up position of
Even when the finger 1 is touched by the finger, since the flash light emitting unit cover 22 made of a non-conductive material is interposed, a large current during light emission does not leak to the exterior member 21.

The above-described up / down operation automatically hops up when the camera judges that flash light emission is necessary,
It may be manually performed when the photographer determines that flash light emission is necessary or intentionally desired. The mechanism for performing the hop-up and hop-down automatically or manually may be performed by a known technique such as via a driving unit connected to a motor or releasing the tension member by energizing an electromagnetic magnet.

[0014]

As described above, according to the present invention as set forth in claims 1 to 3, the non-conductive cover member is interposed between the flash unit and the metal exterior member that covers the flash unit, so that the flash light emitting unit is provided. Since a large current flowing when the light is emitted is prevented from leaking to the metal exterior member, it is possible to safely operate the camera, and a metal member is used for the exterior member, so that the camera has a high-class feeling. It becomes possible. Further, according to the present invention as set forth in claims 4 and 5, the metal exterior member has at least one of a nail for hooking on the non-conductive cover or the flash unit and / or a screw hole for fixing, and its outermost shape. By forming by metal bending, it is possible to easily assemble the flash unit and the non-conductive cover member and form the claw of the exterior member.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a flash light emitting portion of a camera with a built-in electronic flash device according to an embodiment of the present invention.

FIG. 2 is a rear view of the flash unit.

FIG. 3 is a top view of the flash unit.

FIG. 4 is a sectional view taken along the line AA of FIG. 3 in a state in which the flash unit is housed.

FIG. 5 is a sectional view of the flash unit in the light emission standby position.

FIG. 6 is a cross-sectional view of a conventional camera with a built-in electronic flash device in a state in which a flash unit is housed.

FIG. 7 is a sectional view of the flash unit in the light emission standby position.

[Explanation of symbols]

21 ... Metal exterior members, 21a, 21b ... Claws, 21
c, 21d ··· Screw hole, 22 · · Non-conductive flash light emitting part cover, 23 · · flash unit, 24 · · flash case, 24e · · guide groove, 25 · · xenon tube, 26 ·
.Reflector shades, 27 ... Front panel, 28 ...
29..Trigger coil, 30..red-eye reduction lamp unit, 31..hop-up position detection switch, 32 ..
.Supporting shafts, 33..Springs, 34..Lead wire groups, 35
a, 35b ··· screw, 40 ··· camera body, 41 · · upper lid, 41a · · guide pin.

Claims (5)

[Claims] 1. A camera including a flash device that can move between a storage standby position and a light emitting position, wherein the camera body is pivotally supported so as to be movable between the storage standby position and the light emitting position and emits a flash light. A camera with a built-in electronic flash device, characterized in that a non-conductive cover member is interposed between a flash unit fixed to the flash unit and a trigger coil and a metal exterior member covering the flash unit. 2. The camera with a built-in electronic flash device according to claim 1, wherein the flash light emitting section is composed of at least a front panel section, a xenon tube, and a reflector. 3. A camera with a built-in electronic flash device according to claim 1, wherein the non-conductive cover member is molded of plastic and has substantially the same shape as the metal exterior member. 4. The electron according to claim 1, wherein the metal exterior member has both or one of a claw portion for hooking on the non-conductive cover or the flash unit and a screw hole portion for fixing. Camera with built-in flash device. 5. The camera with a built-in electronic flash device according to claim 4, wherein the claw portion of the metal exterior member is formed on the outermost portion of the metal exterior member by bending.