JP2017125980A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide, for a stroboscopic device comprising a multi-axial expansion mechanism, a drip-proof mechanism which reduces a bending load on electric wiring in expanding/storing actions.SOLUTION: An imaging apparatus comprises: a holding member which holds a light emission unit, the holding member being capable of moving to a storage/expansion position; and a link mechanism consisting of one or more link members coupling together a first shaft held by an imaging apparatus body and a second shaft held by the holding member, the holding member being provided with an opening through which electric wiring connected to the light emission unit passes. A first link member coupled to the holding member is fixed integrally to the second shaft, a shutter member is fixed integrally to the second shaft, and the electric wiring passes between the holding member and shutter member in the opening, an interval between the holding member and shutter member in the opening being narrower when the holding member is located at the storage position than when at the expansion position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an image pickup apparatus including a strobe device, and more particularly to an image pickup device in which a light emitting unit of a strobe device is movable between two positions, a storage position and a light emission position.

  2. Description of the Related Art Conventionally, an imaging apparatus such as a digital camera generally includes a strobe device that performs auxiliary light emission for photographing. In such an imaging apparatus, there is a problem that strobe light projected at an angle of view is partially blocked by the lens barrel or the apparatus body.

  Therefore, in such an imaging device, the light emitting unit is stored compactly when not issued, but at the time of light emission, the light emitting unit can be deployed at a position away from the center of the lens to suppress light emission shielding. Some have a strobe deployment mechanism.

  Among the imaging apparatuses as described above, a mechanism that deploys by a multi-axis link mechanism is known (Patent Document 1).

JP2015-118319A

  In such a multi-axis deployment mechanism, power supply to the light emitting unit is generally performed by a flexible substrate connected to the light emitting unit. If drip-proof performance is required in such a camera, it is necessary to prevent water droplets from entering the light-emitting unit holding unit that holds the light-emitting unit so that the water droplets do not contact the electrical terminals of the light-emitting unit. It is. Therefore, it is necessary to narrow the opening of the flexible substrate provided in the light emitting unit holding portion as much as possible and to hold the flexible substrate by the opening.

  By the way, in such a multi-axis deployment mechanism, the rotating shaft of the light emitting unit holding part and the opening of the flexible substrate are usually provided close to each other. Is extended and bent. For this reason, if the flexible substrate is held by the opening, the movement of the flexible substrate is fixed, so that the flexible substrate is stretched and bent at the pin point of the opening during the strobe deployment / storage operation. If it does so, only the part near the opening part of a flexible substrate will be fatigued, and there exists a problem that it will become easy to fracture | rupture.

  An object of the present invention is to provide an imaging apparatus that realizes a drip-proof mechanism that reduces a bending load applied to a flexible substrate during deployment and storage in a strobe device having a multi-axis deployment mechanism.

In order to achieve the above object, an imaging apparatus according to the present invention includes:
With a light emitting unit,
A holding member for holding the light emitting unit;
The holding member is movable to two positions, a storage position and a deployment position;
A multi-joint link mechanism including one or more link members that connect a first shaft held by the imaging apparatus main body and a second shaft held by the holding member;
In the imaging device, in the holding member, an opening through which an electrical wiring connected to the light emitting unit passes is provided in the vicinity of the second axis.
A first link member connected to the holding member via the second shaft is fixed integrally with the second shaft;
A shutter member is integrally fixed to the second shaft,
The electrical wiring passes between the holding member and the shutter member in the opening,
The distance between the holding member and the shutter member in the opening is narrower when the holding member is positioned at the deployed position than when the holding member is positioned at the storage position.

  According to the present invention, it is possible to provide an imaging apparatus that realizes a drip-proof mechanism that reduces a bending load applied to a flexible substrate during deployment and storage in a strobe device that includes a multi-axis deployment mechanism.

Sectional view of the vicinity of the opening of the flexible board when the strobe unit is stored and deployed in this embodiment External appearance perspective view of the imaging apparatus main body showing the state when the strobe is housed and deployed in this embodiment Front perspective view and rear perspective view showing the strobe unit in an unfolded state in this embodiment. Sectional drawing which shows the expansion | deployment state of the strobe unit and the accommodation state in this embodiment In this embodiment, a perspective view of the shutter member and a cross-sectional view of the strobe deployed state

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  2A and 2B are external perspective views of the imaging apparatus according to the embodiment of the present invention. FIG. 2A shows a state in which the strobe is housed, and FIG. 2B shows a state in which the strobe is unfolded.

  A release lever 3 is provided on the side surface of the camera body 1. When the user operates the release lever 3 in the state of FIG. 2A, the flash unit 2 is unlocked and the flash unit 2 is placed on the top surface of the body. It protrudes (pops up) from the opening part of FIG. 2, and it will be in the state of FIG.2 (b).

  Next, the configuration of the strobe unit will be described.

  FIG. 3A is a front perspective view showing the deployed state of the strobe unit 2, and FIG. 3B is a rear perspective view of the same state.

  The first shaft 4 is held by the camera body, and the link member 5 is rotatably coupled to the camera body by the first shaft 4. The second shaft 6 is held by the link member 5, and the light emitting unit 7 is rotatably coupled to the link member 5 by the second shaft 6.

  The light emitting unit 7 includes a light emitting unit 8 composed of a xenon tube, a reflector, a Fresnel lens, and the like, and a holding member 9 that houses the light emitting unit 8. A flexible substrate 10 that supplies power to the light emitting unit 8 is connected to the light emitting unit 8. The flexible substrate 10 passes through an opening provided in the holding member 9, passes between the link member 5 and the flexible cover 11, and is coupled to a strobe driving substrate (not shown) provided in the camera body 1.

  FIG. 4A is a cross-sectional view of the strobe unit 2 in the unfolded state as seen from the side.

  The first torsion spring 12 inserted through the first shaft 4 is engaged with the camera body 1 at one end and the link member 5 at the other end, and urges the link member 5 counterclockwise about the first shaft 4. The biased link member 5 is held at the position shown in FIG.

  The second torsion spring 13 inserted through the second shaft 6 is engaged with the link member 5 at one end and the light emitting portion 7 at the other end, and urges the light emitting portion 7 clockwise about the second shaft 6. The urged light emitting portion 7 is held at the position shown in FIG. 4 by a locking portion described later.

  FIG. 4B is a cross-sectional view of the strobe unit 2 in a housed state as viewed from the side. When the user depresses the light emitting unit 7 from the state of FIG. 4A, the link mechanism is folded against the urging directions of the first and second torsion springs, and a lock lever (not shown) is provided on the holding member. The state shown in FIG. 4B is maintained by engaging with the joint portion 9a.

  Next, the drip-proof mechanism of the strobe unit will be described.

  1A and 1B are cross-sectional views of an opening provided in the holding member 9. FIG. 1A shows a state in which a strobe is housed, and FIG. 1B shows a state in which the strobe is unfolded.

  The second shaft 6 is fixedly held by the link member 5 and cannot rotate with respect to the link member 5. The second shaft 6 is integrally formed with its periphery covered by a rubber shutter member 14, and the shutter member is provided with a first protrusion 14a and a second protrusion 14b. The second shaft 6 and the shutter member 14 are located in the vicinity of the opening provided in the holding member 9, and the flexible substrate 10 passes between the holding member 9 and the shutter member 14 when exiting from the opening of the holding member 9. To do.

  In the state where the strobe is housed as shown in FIG. 1A, a gap wider than the thickness of the flexible substrate 10 is opened between the holding member 9 and the shutter member 14, and the flexible substrate 10 is also developed when the strobe is deployed. Can move freely.

  When the strobe is unfolded, the link member 5 and the second shaft 6 and the shutter member 14 move integrally as described above, so that the shutter member 14 moves to the holding member 9 according to the unfolding by the second torsion spring 13. In contrast, it rotates counterclockwise in the figure.

  1B, the first protrusion 14a of the shutter member 14 approaches the holding member 9, and the distance between the holding member 9 and the shutter member 14 is substantially the flexible substrate 10. It becomes the thickness of.

  On the other hand, in the gap between the holding member 9 and the shutter member 14 on which the flexible substrate 10 does not pass, the second protrusion 14b and the holding member 9 abut.

  In this way, when the strobe is deployed, the shutter member 14 closes the opening for the flexible substrate 10 provided in the holding member 9, so that it is difficult for water droplets to enter the light emitting portion 7, improving the drip-proof performance. Can be made.

  In the strobe unfolding operation, the gap between the holding member 9 through which the flexible substrate 10 passes and the shutter member 14 is wider than the thickness of the flexible substrate 10 until the strobe is completely unfolded. Can move freely.

  FIG. 5A is a single perspective view of the integrally formed second shaft 6 and shutter member.

  Third projections 14c higher than the first projections 14a are provided on both sides of the first projections 14a, respectively, and the flexible substrate 10 passes between the third projections 14c.

  FIG. 5B is a cross-sectional view of the third protrusion 14c through which the flexible substrate 10 does not pass, and shows a state where the strobe is in the deployed position. In this cross section, the third protrusion 14 c is in contact with the holding member 9. The aforementioned locking of the rotation of the light emitting portion 7 by the urging of the second torsion spring 13 is performed by the contact between the third protrusion 14c and the holding member.

  In the cross-sectional view 1 (b), the second protrusion 14b is in contact with the flexible substrate 10 with a weak force, whereas the third protrusion 14c in the cross-sectional view 5 is elastically deformed with respect to the holding member. While actively abutting. Therefore, since the flexible substrate 10 in the cross-sectional view 1B is not clamped between the holding member 9 and the shutter member 14, the stress received by the flexible substrate 10 is small even if it is repeatedly expanded and stored.

  By adopting the configuration as described above, intrusion of water droplets into the light emitting unit 9 is prevented in a state where the strobe is deployed, and stress during bending / extension received by the flexible substrate 10 during the strobe deployment / storage operation. Can be suppressed as much as possible.

1 camera body 4 first axis 5 link member 6 second axis 8 light emitting unit
9 Holding member, 10 Flexible substrate (electrical wiring), 14 Shutter member

Claims (3)

A light emitting unit (8),
A holding member (9) for holding the light emitting unit (8);
The holding member (9) is movable to two positions, a storage position and a deployment position;
A multi-node composed of one or more link members connecting the first shaft (4) held by the imaging device main body (1) and the second shaft (6) held by the holding member (9). With a link mechanism,
In the imaging device, the holding member (9) is provided with an opening in the vicinity of the second axis (6) through which the electric wiring (10) connected to the light emitting unit (8) passes.
The first link member (5) connected to the holding member (9) via the second shaft (6) is fixed integrally with the second shaft (6),
A shutter member (14) is integrally fixed to the second shaft (6),
The electrical wiring (10) passes between the holding member (9) and the shutter member (14) in the opening,
The distance between the holding member (9) and the shutter member (14) in the opening is narrower when the holding member (9) is positioned at the deployed position than when the holding member (9) is positioned at the storage position. An imaging device. The axial size of the second shaft (6) of the shutter member (14) is wider than the axial range of the second shaft (6) where the electrical wiring (10) is disposed,
When the holding member (9) is located at the unfolded position, the shutter member (14) is located outside the range where the electrical wiring (10) is disposed in the axial direction of the second shaft (6). The imaging device according to claim 1, wherein the imaging device is in contact with the member. The imaging device according to claim 1, wherein the shutter member is formed of an elastic member.