JPH10213844A - Stroboscopic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stroboscopic device which can be disposed in narrow space and is excellent in assemblability. SOLUTION: In this stroboscopic device, a matellic clip 65 is provided to go along on the back surface of a metallic reflector positioned at the rear of a xenon tube 71, and the clip 65 is provided with a pair of elastic holding legs 66, interposing and holding the tube 71 at both ends of the reflector by advancing to the front of both ends, and a supporting surface brought into contact with the back surface of the reflector when the pair of elastic holding legs 66 holds the tube 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera strobe device.

[0002]

2. Description of the Related Art A strobe of a camera has a structure in which a xenon tube, which is a light emitter, is fixed to a reflector. Conventionally, a xenon tube penetrated through a reflector was wrapped with an elastic body such as silicon rubber at both ends, and this was fixed by pulling it toward the reflector. However, since silicon rubber or the like is routed on the back side of the reflector, a space at least for the thickness of the rubber is required behind the reflector. In order to dispose the strobe device in the strobe body which becomes narrower as the camera becomes smaller, it is necessary to make the fixing means of the xenon tube thinner.

[0003] In addition to a cathode and an anode connected to both ends of the xenon tube, a lead wire for applying a trigger voltage to the xenon tube is fixed to the strobe near the xenon tube in a conductive state. When this lead wire is soldered directly to a reflector, heat escapes to a wide reflective surface, and the solder itself spreads, so that it is difficult to fix the lead wire and the assembling property is poor.

[0004]

SUMMARY OF THE INVENTION The present invention can be installed in a small space,
Moreover, it is an object of the present invention to provide a strobe device excellent in assemblability.

[0005]

SUMMARY OF THE INVENTION In the strobe device of the present invention, a metal clip is arranged along the back surface of a metal reflector located behind a xenon tube, and the metal clip is advanced to the front surface at both ends of the reflector. Then, a pair of elastic holding legs for sandwiching and holding the xenon tube, and a support surface that is in close contact with the back surface of the reflector when the pair of elastic holding legs hold the xenon tube are provided.

In this reflector, insertion portions for inserting elastic holding legs of a metal clip are formed at both ends in the length direction of the xenon tube, and the elastic holding legs are inserted from the back side of the reflector. Can be.

[0007] The supporting surface of the metal clip is preferably located substantially at the center of the pair of elastic holding legs, and preferably has a mountain-shaped cross section along the reflector having a mountain-shaped cross section. When the inner angle of the chevron shape in the free state of the support surface is formed smaller than the inner angle of the cross-sectional chevron shape of the reflector, the support surface is elastically deformed to expand at the time of mounting, and can be brought into close contact with the back surface of the reflector.

The support surface is provided with a constricted portion, and the outside of the constricted portion can be used as a soldering portion of a lead wire for applying a trigger voltage to the xenon tube. The provision of the constriction facilitates the soldering operation. In addition, since a trigger lead wire is connected to a part of the metal clip, a pair of elastic holding legs that sandwich and hold the xenon tube can be used as trigger electrodes.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of a camera using a self-propelled film cartridge to which a strobe device according to the present invention is applied. This camera has a zoom lens barrel 21 at the front center of the camera body 11. The zoom lens barrel 21 includes first and second lens barrels 22 and 23, and is movable between a retracted position in the optical axis direction and a front photographable position (zoom range). The retractable type is housed in the camera body 11. The zoom lens barrel 21 is driven in the optical axis direction by a zoom motor provided inside the camera body 11. The camera body 11 includes a fixed cover 13, a storage cover 14, and a slide cover 15 for protecting the stored zoom lens barrel 21 on the front. The fixed cover 13 is fixed to the camera body 11, and the slide cover 15 is supported along a slide rail 16 so as to be able to advance and retreat in the longitudinal direction of the camera body 11. Further, the storage cover 14 is interlocked with the slide cover 15 and closes a vertically long rectangular opening formed between the fixed cover 13 and the slide cover 15 in a closed state in which the slide cover 15 is in contact with the fixed cover 13 (FIG. 1), the slide cover 15 moves in the same direction as the slide cover 15 in the open state separated from the fixed cover 13, and moves completely to the rear surface of the slide cover 15 to move the zoom lens barrel 21.
Is exposed (see FIG. 2).

The camera is provided with a main switch that operates immediately before the slide cover 15 reaches the fully opened position from the closed position and when the slide cover 15 is slightly moved from the fully opened position to the closed position. The main switch is turned on immediately before the slide cover 15 reaches the fully open position from the closed position, and is turned off when the slide cover 15 is slightly moved from the fully open position to the closed position. When the main switch is turned on, the zoom motor starts in the extending direction, and the lens barrels 22 and 23 are driven to the photographable positions. On the other hand, when the main switch is turned off, the zoom motor starts in the storage direction, and the lens barrels 22 and 23 are retracted to the storage position.

A cylindrical grip 12 is formed on the front left side of the camera body 11.
A large mode dial 17 and a release button 19 on the shaft of the mode dial 17 are provided on the upper end face of the camera. The mode dial 17 is a click stop type rotary dial, and depending on the click stop position, an automatic exposure mode, a pre-flash mode for automatic exposure and red-eye reduction, a slow shutter mode, a bulb and forced strobe flash mode, a bulb mode, and a flash forcible flash. The flash mode and the flash stop mode can be selected alternatively. The release button 19 is a two-stage switch. When the shutter release button 19 is half-pressed, the photometry switch is turned on to perform photometry and distance measurement. When the release button 19 is fully pressed, the release switch is turned on to execute focusing, exposure processing, film winding processing, and the like.

A cover 1 is further provided on the front of the camera body.
Exposure window 27, AF with exposure 4, 15 open
A window 29 and a finder window 30 are provided.

A pop-up strobe 25 is provided on the upper surface of the camera body 11. The pop-up strobe 25 includes a strobe light emitting section 90 and a gear link mechanism that movably supports the strobe light emitting section 90.

FIGS. 4 to 6 show the operation state of the pop-up strobe 25 in the camera body 11. FIG. The strobe light emitting section 90 has a transparent strobe lens 91 disposed on the front surface thereof, and side plates 93 a, 9 a near the ends of the top plate 92.
3b is extended. Each side plate 93a, 93b is formed with a pair of overhang portions 94.

The camera body 11 has a strobe light emitting section 9
A strobe storage section 41 capable of storing 0 is formed.
The strobe light emitting section 90 includes left and right side plates 93a and 93b.
The non-use position (storage position) in the strobe storage section 41 and the camera body 1 are linked by a link mechanism 50 attached to the camera body 1.
1 and is movably supported at a usable position protruding therefrom. This link mechanism 50 has the same configuration on the left and right,
Hereinafter, only the link mechanism 50 provided on the side plate 93a (the left side in FIG. 4) will be briefly described.

The link mechanism 50 includes an L-shaped link 51 for supporting a strobe light emitting section 90, a C-shaped link 52 having one end connected to the L-shaped link 51 so as to be relatively rotatable,
The drive lever 53 supports the strobe light emitting section 90 at one end. The other ends of the C-shaped link 52 and the drive lever 53 are supported by a box-shaped strobe support 42.
Further, the L-shaped link 51 and the drive lever 53 are connected so as to be relatively rotatable. The link mechanism 50 pulls the stroboscopic light emitting portion 90 to the non-use position when the drive lever 53 is at the lower rotation position in FIG. 5, and when the drive lever 53 is at the upper rotation position in FIG.
Is popped up in a usable position.

Below the strobe support 42, there is disposed a lens barrel driven pin 55 which is advanced and retracted in the front-rear direction of the camera as the zoom lens barrel 21 moves between the storage position and the photographable position. . Engagement protrusion 57 of lens barrel driven pin 55
Is a rotary plate 58 pivotally supported at the lower portion of the strobe support 42.
And the first gear 59 coaxial with the rotation plate 58 is rotated accordingly. Drive lever 53
A second gear 48 that meshes with the first gear 59 is formed on the periphery of the rotation shaft portion. The drive lever 53 is urged by the torsion spring 49 to the upward turning position. Therefore, when the zoom lens barrel 21 is in the storage position, the gear 48,
59 locks the drive lever 53 in the lowered rotation position, and the strobe light emitting section 90 is in the non-use position. When the zoom lens barrel 21 advances to the photographable position, the torsion spring 49 is allowed to be bent and released, and the strobe light emitting unit 90 is linked to pop up to the use position.

FIGS. 7 to 11 show a flash device in the flash light emitting section 90 of the pop-up flash 25. FIG. The reflecting umbrella 60 (see FIG. 7) made of a metal material is formed in an umbrella shape such that the front opening 61 faces the strobe lens 91 and the opening diameter gradually decreases as going inward from the front opening 61. I have. The inner wall 62 of the reflector 60 is closed in a cylindrical shape capable of holding a cylindrical tube, and the reflector 60 has a mountain-shaped cross section. A pair of side plates 63 are provided on both side surfaces of the reflector umbrella 60 to maintain the shape of the reflector umbrella 60. Both ends of the inner wall 62 inside the reflective umbrella 60 are cut out in a rectangular shape, and a pair of insertion openings (insertion portions) 64 are formed between the inner wall 62 and the both side plates 63 of the reflective umbrella 60. A pair of xenon tube holding legs 66 provided at both ends of a metal clip 65 are inserted into each insertion opening 64. Each xenon tube holding leg 66
Is composed of a pair of opposing legs 66a and 66b.

FIG. 8 is a perspective view of the metal clip 65. This metal clip 65 is made of phosphor bronze,
It has xenon tube holding legs 66 at both ends, a linear connecting portion 67 for connecting the legs, and a clip supporting portion 68 provided substantially at the center of the connecting portion 67. This clip support 68
Has a chevron shape along the back side of the reflective umbrella 60,
The inner angle of the chevron when the clip support 68 is in the free state is set to be smaller than the inner angle of the chevron in cross section of the reflector 60. When the pair of xenon tube holding legs 66 are inserted into the insertion openings 64 as far as they will go, the connection portions 67 and the clip support portions 68 abut against the back surface of the reflector 60. At this time, since the inner angle of the chevron shape of the clip support portion 68 is smaller than the inner angle of the cross-sectional chevron shape of the reflective umbrella 60, the clip support portion 68 can be expanded and adhere to the back surface of the reflective umbrella 60. In this mounted state, the xenon tube holding leg 66 in the free state has a shape shown by a two-dot chain line in FIG. 11, and a certain amount of elastic deformation in a direction in which the legs 66a and 66b are brought into and away from each other is possible. ing.

The thickness of the connecting portion 67 and the clip supporting portion 68 which are in close contact with the back surface of the reflector 60 are larger than the thickness of the conventional silicon rubber for fixing the xenon tube.
0 has a small amount of protrusion from the back side. Clip support 68
Is narrowed, and the soldering portion 69 is extended.
The trigger lead wire 70 is soldered to the soldering portion 69. Since the constriction is provided between the soldering portion 69 and the clip supporting portion 68, heat conduction from the soldering portion 69 to the clip supporting portion 68 can be suppressed to some extent. That is, the soldering section 69 is easily heated. Further, the solder is less likely to spread outside the soldered portion 69. For these reasons, the trigger lead 70 can be easily soldered. Workability is good if this soldering is performed before the xenon tube holding leg 66 is passed through the insertion opening 64.

With the metal clip 65 mounted,
A xenon tube 71 is mounted on the reflector 60. Xenon tube 7
Reference numeral 1 denotes a glass cylindrical straight tube in which xenon gas is sealed, and has both ends protruding from the side of the reflector 60. When attaching the xenon tube 71, the pair of xenon tube holding legs 66 are expanded to the state shown by the solid line in FIG. 11 to hold the xenon tube 71 therebetween. The expanded xenon tube holding leg 66 is in a state of being prevented from falling out of the insertion opening 64. At the same time, the clip support portion 68 is in close contact with the back surface of the reflector 60 in a state of being elastically deformed.
As a result, the xenon tube 71 is connected to the inner wall 62 of the reflector 60.
Is held in close contact with

Both ends of the xenon tube 71 protrude into the overhang portion 94 of the strobe light emitting section 90, and a cathode 72 and an anode 73 are connected to both ends. The cathode 72 and the anode 73 are connected to a main capacitor (not shown). On the other hand, the trigger lead wire 70 is connected to a trigger circuit (not shown) for generating a high voltage. The xenon gas is electrically an insulator, and normally the electricity stored in the main condenser does not flow into the xenon tube 71. Then, the soldering portion 69 (the clip supporting portion 6) is connected via the trigger lead wire 70.
When a high voltage is applied to 8), the high voltage is transmitted to a pair of xenon tube holding legs 66 forming a part of the metal clip 65. When a high voltage is applied to the vicinity of the xenon tube 71, the insulation is broken. When the insulation is broken, the electricity stored in the main capacitor flows through the xenon tube 71 and discharges,
The xenon gas is heated by Joule heat at that time, and light is emitted. That is, the pair of xenon tube holding legs 66
Also serves as a trigger electrode of the strobe device.

The trigger circuit and the main capacitor are controlled by a CPU provided in the camera. For example,
It is controlled to emit light only when the pop-up strobe 25 is at the use position. In addition, the light emission of the strobe is controlled in conjunction with the light emission mode selected by the mode dial 17 and the automatic exposure mechanism of the camera.

As is clear from the above, the xenon tube 71
Since a pair of xenon tube holding legs 66 projecting from the inner wall 62 of the reflector 60 is used for fixing the reflector, there is almost no thickness of the member projecting to the back side of the reflector 60. in addition,
This xenon tube holding leg 66 can be used as a trigger electrode. Further, since the integrated metal clip 65 is merely fitted, the assembling property is good, and the soldering operation is facilitated because the soldering portion 69 is provided on a part of the metal clip 65.

In the above embodiment, the strobe device of the present invention is applied to a pop-up strobe with a built-in camera.
It goes without saying that the present invention is applicable to other types of strobes.

[0026]

As described above, according to the present invention, it is possible to provide a strobe device which can be arranged in a small space and which is excellent in assemblability.

[Brief description of the drawings]

FIG. 1 is a front view of a camera to which a strobe device according to the present invention is applied, with a taking lens housed.

FIG. 2 is a front view of the camera in a photographable state.

FIG. 3 is a plan view of the camera in a photographable state.

FIG. 4 is a front view of a pop-up strobe incorporating a strobe device according to the present invention in a use state.

FIG. 5 is a left side view of the pop-up strobe in a non-use (storage) state.

FIG. 6 is a left side view of the pop-up strobe in a usable state.

FIG. 7 is a front view showing a reflector of the strobe device of the present invention.

FIG. 8 is a perspective view showing a metal clip of the strobe device.

FIG. 9 is a front view of the strobe device.

FIG. 10 is a plan view of the strobe device.

FIG. 11 is a side view of the strobe device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Camera body 25 Pop-up strobe 41 Strobe storage part 42 Strobe support 50 Link mechanism 60 Reflective umbrella 64 Insertion opening (insertion part) 65 Metal clip 66 Xenon tube holding leg 67 Connection part 68 Clip support part 69 Soldering part 70 Trigger Lead wire 71 Xenon tube 90 Strobe light emitting part

Claims (6)

[Claims] 1. A metal clip is arranged along the back surface of a metal reflector located behind a xenon tube, and the metal clip advances to the front surface at both ends of the reflector to sandwich the xenon tube. A strobe device comprising: a pair of elastic holding legs for attaching and holding; and a support surface that is in close contact with the back surface of the reflector when the pair of elastic holding legs hold the xenon tube. 2. The strobe device according to claim 1, wherein
A strobe device in which a reflection umbrella is formed with insertion portions for inserting elastic holding legs of metal clips at both ends in the length direction of the xenon tube. 3. The strobe device according to claim 1, wherein the support surface of the metal clip is located substantially at the center of the pair of elastic holding legs, and has a mountain-shaped cross section along the reflector having a mountain-shaped cross section. Strobe device. 4. The strobe device according to claim 3, wherein
A strobe device in which the angle of the chevron in the free state of the support surface of the metal clip is smaller than the angle of the chevron in cross section of the reflector. 5. The strobe device according to claim 1, wherein a constricted portion is provided on the support surface, and a lead wire for applying a trigger voltage to the xenon tube is provided outside the constricted portion. Strobe device that is the soldering part of. 6. The strobe device according to claim 5, wherein
A strobe device in which a pair of elastic holding legs also serve as trigger electrodes.