JPH0878U - SLR camera with built-in flash device - Google Patents

Abstract

(57) [Abstract] [Purpose] The wiring member connected to the light emitting part of the built-in flash device is laid out so as to improve the assembly work efficiency and effectively use the space. A built-in flash device 40 is provided which is attached to the upper cover 20 and is rotatable between a use position where the light emitting unit 44 can emit flash light and a storage position where the light emitting unit 44 is stored after use. The device 40 is provided with a holding portion that holds the light emitting portion 44, a pair of hollow arm portions that extend from both ends of the holding portion toward the rear side of the camera, and the distal ends of the pair of arm portions. A main body case 41 including rotating shaft portions 42 and 43 connected to the shaft supporting portions 21 and 22 arranged at the rear side.
Is provided. Rotating shaft portion 4 provided at the tips of the pair of arm portions
At least one of 2 and 43 is hollow, and the light emitting portion 44
A plurality of electrical wiring members 45 whose one ends are connected to each other are drawn into the inside of the upper cover 20 through the hollow space of one arm portion and the hollow rotation shaft portion 43 provided in this arm portion. Get caught

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a single-lens reflex camera having a built-in flash device in which a light emitting unit is rotatable between a use position and a storage position where flash light can be emitted.

[0002]

[Prior art and its problems]

 As this type of single-lens reflex camera with a built-in flash device, for example, the one disclosed in Japanese Utility Model Laid-Open No. 58-1804541 is known. This camera has a hollow rotation shaft that rotatably supports the built-in flash device, and inserts a plurality of lead wires, one end of which is connected to the light emitting part, inside the rotation shaft. The other end of the lead wire is pulled out from both ends of and is guided inside the camera body. Generally, considering the assemblability of the camera, it is desirable to bundle the above wiring members such as the lead wires together and run them inside the camera.However, in the configuration where the lead wires are drawn from both ends of the rotary shaft as described above, It is necessary to re-bundle the separated lead wires inside the camera body, which is inefficient in assembling work and disadvantageous in space.

An object of the present invention is to provide a single-lens reflex camera with a built-in flash device in which the wiring member connected to the light emitting portion of the built-in flash device is devised so as to improve the assembly work efficiency and effectively use the space. To do.

[0004]

[Means for Solving the Problems]

 The present invention relates to an upper cover of a single-lens reflex camera, and a built-in flash device that is attached to the upper cover and is rotatable between a use position where a light emitting unit can emit flash light and a storage position where the light emitting unit is stored after use. It is applied to a single-lens reflex camera with a built-in flash device and has the following configuration to solve the above problems. The built-in flash device includes (a) a holding part for holding the light emitting part, (b) a pair of hollow arms extending from both ends of the holding part toward the rear side of the camera, and (c) tips of the pair of arms. And a rotation shaft part connected to a shaft support part arranged on the rear side of the side surface of the upper cover for supporting the rotation of the built-in flash device. At least one of the rotating shafts provided at the tips of the pair of arms is hollow, and the plurality of electrical wiring members whose one end is connected to the light emitting unit are provided in the hollow space of one arm and this space. It is drawn into the inside of the upper cover through the hollow rotating shaft provided on the arm.

[0005]

[Action]

 Plural electrical wiring members, one end of which is connected to the light emitting part, are pulled into the inside of the upper cover through the hollow space of one arm part and the hollow rotation shaft part provided in this arm part. Get caught

[0006]

【Example】

1 to 8 show an embodiment of the present invention. As shown in FIG. 2, which is a perspective view of the entire camera with a built-in flash device, a flash unit body 40 is integrally attached to the central portion of the upper part of the camera body 1, and as shown in FIG. It is rotatable about the set rotation axis O between the storage position A and the use positions B ₁ and B ₂ . Here use position B1 is normal flash position light emission surface faces the object, B ₂ is the light emitting surface is bounced emission position for-called bounce emission directed upward of the subject. Further, in this embodiment, the flash body 40 is rotated by about 35 degrees from the storage position A to the use position B _1, and about 80 degrees by the use position B ₂ . In FIG. 1, 61 is a pentaprism, and 62 is an eyepiece lens, which form a finder optical system 60.

In FIG. 3, which is a sectional view taken along the line III-III of FIG. 1, the finder optical system 60 formed by the eyepiece lens 61 and the pentaprism 61 is surrounded by the upper surface cover 20 of the pentaprism 61. A solid rotating shaft 21 is coaxially provided on one side surface of the top cover 20, and a hollow rotating shaft 22 is coaxially provided on the other side surface thereof. The flash unit main body 40 is attached to the shafts (shaft supports) 21 and 22. A holding member 41, which is entirely deformed into a substantially U-shape, is rotatably supported by bearings (rotating shafts) 42 and 43.

As shown in FIG. 3, the holding member 41 holds the light emitting unit 44 so as to be positioned on the front side of the camera, and the holding unit extending in the longitudinal direction of the camera, and from both sides of the holding unit to the back side of the camera. It is composed of a pair of hollow arms extending along the sides of the pentaprism 61, and the inner surface of each arm is in close contact with the vertical surfaces on both sides of the upper cover 20. The rotation shafts 21 and 22 of the holding member 41 are set on the side of the finder optical system 60 on the camera back side of the top cover 20. A light emitting portion 44 such as a xenon tube is provided in the holding member 41, and a plurality of lead wires 45, one end of which is connected to the light emitting portion 44, are bundled in one arm portion and in the hollow rotary shaft 22. That is, it is drawn into the camera body 1 through the bearing 43, and the other end is connected to a boosting circuit (not shown). The front side of the camera of the light emitting unit 44 is a light emitting surface F.

The rotation mechanism of the holding member 41 will be described. In FIG. 3, a torsion spring 46 is externally inserted on the solid rotating shaft 21 and the bearing 42, one end 461 of the spring 46 is hooked on a spring hooking pin 411 projecting from the holding member 41, and the other end 462. Is hooked on a spring hooking ring 24 screwed to the rotary shaft 21 by a screw 23, so that the holding member 41 is attached toward the use positions B ₁ and B ₂ (upward in the plane of FIG. 3). It is energized. The urging force is locked and positioned at the storage position A and the use positions B ₁ and B ₂ , respectively, as described below.

At the use positions B ₁ and B ₂ , the holding member 41 is held and fixed as follows. In FIG. 3, a hole 25 is formed in the peripheral surface of the rotary shaft 21, and a spring 26 and a ball 27 are inserted in the hole 25 to urge the ball 27 outward. On the other hand, the inner peripheral surface of the bearing 42 is provided with a cam surface 421, cam grooves 422 and 423, respectively, as shown in FIGS. 4 to 6, and the ball 27 is in contact with the cam surface 421 at the storage position A.

Then, when the holding member 41 is rotated to the use position B ₁ (FIG. 5), the ball 27 engages with the cam groove 422, and the holding member 41 is held and fixed at the position B ₁ . When the holding force is released and the holding member 41 is rotated to the use position B ₂ (FIG. 6), the ball 27 engages with the cam groove 423, and the holding member 41 is held and fixed at the position B ₂ . In FIGS. 4 and 5, reference numerals 2 and 3 denote spring-type switch contact pieces fixed to the upper cover 20. The switch contact piece 3 is provided with a pin 4 at its tip, and the head of the pin 4 is The elastic force allows the upper cover 20 to project. When the holding member 41 is in the storage position A, as shown in FIG. 4, the head of the pin 4 is retracted from the upper cover 20 and the switch contact pieces 2 and 3 are separated from each other, so that the holding member 41 moves to the use position B ₁ , When held at B ₂ , the switch contact pieces 2 and 3 come into contact as shown in FIG. 5, and the use of the flash unit is permitted.

Next, the locking mechanism of the flash unit will be described with reference to FIG. 3 and FIGS. 7 and 8 which are sectional views taken along line VII-VII thereof. A sliding knob 5 is provided on the upper wall 28 of the upper cover 20, and a lever 7 is connected to the inner surface side of the upper wall 28 via a pin 6. Claws 8a and 8b protruding from the top cover 20 toward the front of the camera are provided at both ends 71 and 72 of the lever 7, respectively. The claws 8a and 8b are constantly urged toward the front of the camera by a torsion spring 9 provided on a pin 29 provided upright from the top cover 20. Since the holding member 41 is provided with engaging holes 413, 414 facing the claws 8a, 8b, when the holding member 41 is in the storage position A (FIGS. 3, 7), the two claws 8a, 8b is inserted into and engaged with the engagement holes 413, 414, and the turning force of the holding member 41 by the spring 46 is locked.

As shown in FIG. 8, when the knob 5 is operated rearward of the camera against the spring 9, the claws 8 a and 8 b retract from the engaging holes 413 and 414, and the holding force of the spring 46 causes the holding member 41 to move. Is the use position B₁, B₂Rotate toward. Then, first, as shown in FIG. 5, the ball 27 is engaged with the cam groove 422 so that its rotation is locked, and the holding member 41 moves to the use position B.₁Is held. At this time, the light emitting surface F faces the subject as shown in FIG. Its position B₁From the holding member 41 to the use position B₂When the ball 27 and the cam groove 422 are disengaged from each other by further rotating toward the use position B, the spring force of the spring 46 causes the holding member 41 to move to the use position B. ₂ 6, the ball 27 engages with the cam groove 423 as shown in FIG. 6, and the holding member 41 moves to the use position B.₂It is held and fixed by (Fig. 1, Fig. 6). At this time, the light emitting surface F 1 faces upward from the subject, and so-called bounce light emission is possible.

When the holding member 41 in the use position B ₁ or B ₂ is manually rotated toward the storage position A, the side wall 415 (FIG. 7) of the holding member 41 surrounding the light emitting part 44 is placed on the upper surface. The pawls 8a and Bb protruding from the cover 20 are moved to the storage position A while being pressed, and at the storage position A, the pawls 8a and 8b are inserted into and engaged with the engagement holes 413 and 414 by the spring 9 to hold the holding member. 41 is held and fixed.

As shown in FIG. 3, the upper wall 28 of the upper cover 20 is exposed between the bearings 42 and 43 of the holding member 41 formed in a substantially U shape, and the upper wall 28 is exposed there as shown in FIG. By providing the sari shoe 10, an external flash unit 11 can be attached as shown in FIG. 1, and simultaneous light emission is possible together with the built-in flash unit. Further, if the lead wire 45 is made to pass through the center of the rotary shaft 22 as in the embodiment, the lead wire is less twisted and moved, and the durability thereof is further improved.

[0016]

[Effect of device]

 According to the present invention, a plurality of electrical wiring members, one end of which is connected to the light emitting unit, are passed through the hollow space of one arm and the hollow rotating shaft provided in the arm. Since it is configured to be pulled inside the cover, the following effects can be obtained. (1) The wiring members can always be efficiently bundled in a limited space inside the camera's top cover and built-in flash device body case, improving the assembly work efficiency and improving the camera body upper part. It is possible to improve usability without increasing the size. (2) Since the wiring member is passed through the space inside the hollow rotating shaft, it is not necessary to separately provide a hole for wiring, and the drip-proof and dust-proof effects in the upper cover and the body case are improved, and the reliability is improved. It is possible to improve the sex. (3) Rotation of the built-in flash device between the storage position and the use position reduces the tension and compression of the wiring member due to twisting and movement, improving durability. (4) A rotating shaft part provided on the arm part where the wiring member does not pass, with a torsion spring for urging the built-in flash device toward the use position and a fixing mechanism for holding and fixing the built-in flash device at the use position. It can be installed on the shaft support part without any trouble (without being disturbed by the wiring member).

[Brief description of drawings]

FIG. 1 is a side view showing the configuration of a single-lens reflex camera with a built-in flash device according to an embodiment of the present invention.

2 is an overall perspective view of the camera of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

5 is a cross-sectional view showing a main part of the camera of FIG. 1, showing a state in which the flash device is in a use position B ₁ .

FIG. 6 is a view similar to FIG. 5, in which the flash device is in a use position B;
₂ shows the state.

7 is a cross-sectional view taken along line VII-VII of FIG. 3, showing a state in which the flashlight device is in the storage position A. FIG.

FIG. 8 is a view similar to FIG. 7, showing a state in which the claw is retracted.

[Explanation of symbols]

 1 Camera Main Body 5 Knob 20 Top Cover 21 Solid Rotating Shaft 22 Hollow Rotating Shaft 26 Spring 27 Ball 40 Flasher Body 41 Holding Member 42, 43 Bearing 44 Light Emitting Part 45 Lead Wire 46 Torsion Spring 421 Cam Surface 422 Cam Groove 423 Cam groove F Light emitting surface

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Shoji Hara, 1-6-3 Nishi-oi, Shinagawa-ku, Tokyo Inside Oi Works, Nippon Optical Industry Co., Ltd. (72) Yoshio Sekine 1-6-3 Nishi-oi, Shinagawa-ku, Tokyo No. Japan Optical Industry Co., Ltd. Oi Works

Claims (3)

[Scope of utility model registration request] 1. An upper cover of a single-lens reflex camera, and a built-in flash that is rotatable between a use position attached to the upper cover and capable of flashing a light emitting unit and a storage position in which the light emitting unit is stored after use. A single-lens reflex camera with a built-in flash device, comprising: (a) a holding part for holding the light emitting part; and (b) extending from both ends of the holding part to the rear side of the camera. A pair of hollow arm portions, and (c) is connected to a shaft support portion that is provided at the tips of the pair of arm portions and that is pivotally supported for rotation of the built-in flash device and that is disposed behind the side surface of the upper cover. A main body case including a rotating shaft portion, and at least one of the rotating shaft portions provided at the ends of the pair of arm portions is hollow, and a plurality of one ends of which are connected to the light emitting portion. The electrical wiring member of the A single-lens reflex camera with a built-in flash device, wherein the single-lens reflex camera with a built-in flash device is drawn into the inside of the upper cover through the hollow rotation shaft provided on the arm. 2. A torsion spring for urging the built-in flash device toward the use position is externally attached to the rotating shaft portion provided on the arm portion through which the wiring member does not pass. A single-lens reflex camera with a built-in flash device according to claim 1, characterized in that the utility model is registered. 3. The built-in flash device is held at the use position on the rotating shaft portion provided on the arm portion through which the wiring member does not pass, and on the shaft supporting portion connected to the rotating shaft portion. The single lens reflex camera with a built-in flash device according to claim 1 or 2, wherein a fixing mechanism for fixing is provided.