JP2007058004A - Photographic accessory case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photographic accessory case advantageous in terms of prevention of flaw on a photographic accessory and also advantageous in terms of prevention of the adhesion of dust when carrying a camera in which the photographic accessory is coupled with the edge of the lens of the camera. <P>SOLUTION: When taking out a close-up lens 30 from the photographic accessory case 38, a user grasps the external barrel part 44 of a first case 40 with his (her) left hand and grasps the external barrel part 54 of a second case 50 with his (her) right hand from a notch 4402, and pulls out the second case 50 from the first case 40, then detaches the second case 50 from a frame body 32. The second case 50 forming a part of the accessory case 38 is used as the lens cover (lens cap) of the close-up lens 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a case of a photographing accessory used in a camera such as a close-up lens, a conversion lens, or a filter.

Shooting accessories used for cameras such as close-up lenses, conversion lenses, filters, etc. are housed in cases and are commercially available.
On the other hand, a case where a part of a case that accommodates an interchangeable lens in the market is also used as a rear cap of the interchangeable lens has been proposed, but these photographing accessories are connected to the tip of the camera lens. When used, there is currently no cover to be attached to the photographing accessory (see, for example, Patent Document 1).
JP-A-11-352580

For this reason, when the camera is carried with the photographing accessory connected to the tip of the lens of the camera, the photographing accessory is liable to be scratched or dusty.
The present invention has been made in view of such circumstances, and an object of the present invention is to prevent damage to the shooting accessory when the camera is carried with the shooting accessory connected to the tip of the lens of the camera. It is another object of the present invention to provide a photographing accessory case that is advantageous in preventing dust from adhering.

  In order to achieve the above-described object, the present invention provides a photographic accessory that includes a frame and an optical member supported inside the frame, and a base for the frame is attached to the distal end of a camera barrel. An accessory case, wherein the photographing accessory case includes a first case and a second case, and the first case has a bottom plate portion having an outer diameter larger than an outer diameter of the frame, An outer cylinder portion that is erected from the outer periphery of the bottom plate portion and has an inner diameter that is larger than the outer diameter of the frame body, and a base portion of the frame body that is provided on the bottom plate portion or the outer cylinder portion. The second case is erected from an upper plate portion having an outer diameter larger than the outer diameter of the frame body, and an outer periphery of the upper plate portion. Dimensions that the outer diameter is inserted inside the outer cylinder part of the first case Its inner diameter with the formation is characterized in that it comprises an outer cylindrical portion which is detachably coupled to the tip portion of the frame body located opposite to the base portion.

In the present invention, when the accessory for photographing is accommodated in the accessory case for photographing, the frame of the accessory for photographing is accommodated inside the outer cylindrical portion of the first case, the base of the frame is coupled to the engagement / disengagement portion, The outer cylinder part of the second case is coupled to the front part of the frame body inside the outer cylinder part of the one case. Therefore, the base side of the frame body is covered with the bottom plate part of the first case, and the front part side of the frame body Is accommodated in a state covered with the upper plate of the second case.
Further, when the photographing accessory is used, the base portion of the frame body is attached to the tip of the camera barrel, and the second case is used as a cover by being engaged and disengaged from the front portion of the frame.
That is, when the photographing accessory is, for example, a lens, the second case functions as a photographing accessory case and also functions as a lens cover, and when the photographing accessory is, for example, a filter, the second case. The case functions as an accessory case for shooting and also functions as a filter cover.

Next, an embodiment of the present invention when the photographing accessory is a close-up lens will be described with reference to the drawings.
FIG. 1A is a perspective view of a camera with a close-up lens attached to the tip of a lens barrel, and FIG. 1B is a camera with a second case of a photographing accessory attached to the close-up lens. FIG. 2 is a cross-sectional view of a close-up lens.
As shown in FIG. 1, the camera 10 is a digital still camera. A grip 14 is provided on the right side of the camera body 12, and a lens barrel 16 in which a lens is incorporated is provided on the left side of the camera body 12. An imaging device is disposed at the rear end of the tube 16, and a strobe device 18 is provided on the left side of the camera body 12 so as to be able to appear and retract. The strobe device 18 can be swung around the vertical axis and back and forth behind the strobe device 18. A liquid crystal display 20 that displays an image taken by the image sensor so as to be swingable is provided, a shutter button 22 is provided on the upper surface of the grip portion 14, and a hot shoe 24 for attaching an external strobe is provided. It has been.

The close-up lens 30 is detachably attached to the tip of the lens barrel 16.
As shown in FIG. 2, the close-up lens 30 includes a frame body 32 and a lens 34 that is an optical member supported inside the frame body 32.
The frame 32 is made of metal or hard synthetic resin.
A male screw 3202 that can be screwed into the female screw at the tip of the lens barrel 16 is formed at the base portion 32 </ b> A of the frame 32.

3A is a plan view of a photographing accessory case containing a close-up lens, FIG. 3B is a front view of the same section, FIG. 4 is a side view of the photographing accessory case containing a close-up lens, and FIG. ) Is a perspective view of the first case, (B) is a sectional front view of the first case, FIG. 6 (A) is a perspective view of the second case, (B) is a sectional front view of the second case, and FIG. Explanatory drawing in the case of taking out a close-up lens from an accessory case is shown.
The photographing accessory case 38 of the present embodiment accommodates the close-up lens 30.
The photographing accessory case 38 includes a first case 40 and a second case 50.
The first case 40 and the second case 50 are both made of a synthetic resin that is softer (has flexibility) than the frame body 32 so that the close-up lens 30 is not easily damaged, and as such a synthetic resin, For example, polypropylene, polystyrene, ABS resin, etc. can be used.

As shown in FIG. 5, the first case 40 includes a bottom plate portion 42, an outer cylinder portion 44, and an engagement / disengagement portion 46.
The bottom plate portion 42 is formed in a circular shape with an outer diameter larger than the outer diameter of the frame body 32.
The outer cylinder portion 44 is erected from the outer periphery of the bottom plate portion 42, and has an inner diameter that is larger than the outer diameter of the frame body 32.
In the present embodiment, the bottom plate portion 42 of the first case 40 is formed with a larger outer diameter than the outer cylinder portion 44, and the bottom plate portion 42 is formed with a flange 42 </ b> A that extends annularly outward in the radial direction of the outer cylinder portion 44. Has been.
In addition, the second case 50 formed in an open shape toward the distal end of the outer cylinder portion 44 at two positions spaced by 180 degrees in the circumferential direction of the outer cylinder portion 44 and accommodated inside the outer cylinder portion 44. A notch 4402 is formed for locking the finger to the outer cylindrical portion 54 and taking out the second case 50.
The engagement / disengagement portion 46 is provided on the bottom plate portion 42 or the outer cylinder portion 44 and is formed so that the base portion 32A of the frame body 32 is detachably coupled.
In the present embodiment, a male screw 3202 is formed on the base portion 32A of the frame body 32, and the engaging / disengaging portion 46 is erected from the bottom plate portion 42 coaxially with the outer cylinder portion 44 inside the outer cylinder portion 44, and the male screw 3202 is provided. It is formed of an inner cylinder portion having an inner diameter of a dimension to be engaged / disengaged, and the male screw 3202 is elastically supported on the inner peripheral surface of the inner cylinder portion.

As shown in FIG. 6, the second case 50 includes an upper plate part 52 and an outer cylinder part 54.
The upper plate portion 52 is circular with an outer diameter that is larger than the outer diameter of the frame 32 and smaller than the inner diameter of the outer cylinder portion 44 so as to be inserted inside the outer cylinder portion 44 of the first case 40. Is formed.
The outer cylinder portion 54 is erected from the outer periphery of the upper plate portion 52 and has an outer diameter that is dimensioned to be inserted inside the outer cylinder portion 44 of the first case 40 and has an inner diameter that is opposite to the base portion 32A. It is formed in a size that is detachably coupled to the front portion 32B of the frame body 32 to be engaged.
In the present embodiment, a plurality of bulging portions 5402 that bulge radially inward of the inner surface of the outer cylinder portion 54 are formed on the inner surface of the outer cylinder portion 54 of the second case 50 at intervals in the circumferential direction. When the second case 50 is put on the tip 32B of the frame 32, the bulging portions 5402 are configured to be detachably coupled to the outer peripheral surface of the tip 32B of the frame 32. More specifically, an imaginary cylindrical surface connecting the inner surfaces of the plurality of bulged portions 5402 is expanded in the radial direction by the outer peripheral surface of the tip portion 32B, and the outer cylindrical portion 54 is caused by elastic force to return inward in the radial direction. The frame 32 is configured to be supported by the tip 32B.
Further, a bulging portion 5202 continuous with the bulging portion 5402 is also provided on the outer peripheral portion of the inner surface of the upper plate portion 52, and when the second case 50 is put on the tip 32 </ b> B of the frame body 32, The tip of the tip portion 32 </ b> B is configured to come into contact with the bulging portion 5202.
As shown in FIGS. 3B and 4, the protruding height from the bottom plate portion 42 of the outer cylinder portion 44 of the first case 40 is the same as that when the base portion of the frame body 32 is coupled to the engagement / disengagement portion 46. The close-up lens 30 is inserted inside the case 40, the second case 50 is put on the front part 32B of the frame 32, and the outer cylinder part 54 is coupled to the front part 32B. In a state where the lens 30 is housed in the photographing accessory case 38, the tip of the outer cylinder portion 44 of the first case 40 and the upper plate portion 52 of the second case 50 are in the axial direction (optical axis direction) of the close-up lens 30. ) In the vicinity of each other.

In the present embodiment, the close-up lens 30 is accommodated in the photographing accessory case 38 such that the frame 32 is accommodated inside the outer cylindrical portion 44 of the first case 40 and the base 32A of the frame 32 is cylindrical. It is coupled to the inner peripheral surface of the engagement / disengagement part 46 (elastically supported in the present embodiment) and is accommodated inside the first case 40.
Further, the outer cylinder portion 54 of the second case 50 is coupled to the tip portion 32B of the frame body 32 inside the outer cylinder portion 44 of the first case 40, and the tip portion 32B of the frame body 32 is covered with the second case 50. .
Accordingly, in the close-up lens 30, the base portion 32 </ b> A of the frame body 32 is covered with the bottom plate portion 42 of the first case 40, and the body portion of the frame body 32 is formed between the outer cylinder portion 44 of the first case 40 and the second case 50. It is covered with the outer cylinder part 54, and is accommodated in a state where the front part 32B of the frame 32 is covered with the upper plate part 52 of the second case 50.

When taking out the close-up lens 30 from the photographing accessory case 38, as shown in FIG. 7, for example, the left hand holds the flange 42A of the outer cylindrical portion 44 of the first case 40 and the right hand from the notch 4402 When the outer cylinder portion 54 of the case 50 is grasped and the second case 50 is pulled out from the first case 40, the base portion 32 </ b> A of the frame body 32 is detached from the inner peripheral surface of the cylindrical engagement / disengagement portion 46 and is closed together with the second case 50. The up lens 30 is removed from the first case 40.
When the close-up lens 30 is attached to the tip of the lens barrel 16, the base 32A side of the frame 32 of the close-up lens 30 is grasped with one hand, and the outer tube portion 54 of the second case 50 is held with the other hand. After the second case 50 is removed from the frame body 32, the base 32 </ b> A of the frame body 32 of the close-up lens 30 is coupled to the tip of the lens barrel 16.
Alternatively, with the second case 50 attached to the close-up lens 30, the base portion 32 </ b> A of the frame body 32 is coupled to the tip of the lens barrel 16, and the close-up lens 30 is attached to the lens barrel 16. The two cases 50 are grasped by one hand, the main body 12 of the camera 10 is grasped by the other hand, the second case 50 is pulled out from the frame body 32 and removed from the close-up lens 30.

  When the camera 10 with the close-up lens 30 attached to the tip of the lens barrel 16 is carried, the outer cylinder portion 54 of the second case 50 is coupled to the tip portion 32B of the frame 32 and the tip portion 32B is covered with the second case 50. The second case 50 is used as a lens cover (lens cap) of the close-up lens 30 by detaching the second case 50 from the front portion 32B.

Therefore, according to the present embodiment, the photographing accessory case 38 is used as a lens case when the close-up lens 30 is sold (at the time of distribution) or not in use, as in the conventional case. The second case 50 that forms a part of the photographing accessory case 38 can be used as the lens cover (lens cap) of the close-up lens 30 when the camera 10 with the lens 30 is carried. It is advantageous for preventing the close-up lens 30 from being damaged, and is advantageous for preventing dust from adhering.
In the present embodiment, since the flange 42A is formed on the bottom plate portion 42 of the first case 40, the first case 40 can be securely grasped by placing a finger on the flange 42A, and the close-up lens 30 can be taken out. This is advantageous for simple execution.
Further, in a state where the close-up lens 30 is accommodated in the photographing accessory case 38, the distal end of the outer cylinder portion 44 of the first case 40 and the upper plate portion 52 of the second case 50 are in the axial direction of the close-up lens 30. Since they are positioned in the vicinity of each other in the (optical axis direction) direction, the dimension along the optical axis direction of the close-up lens 30 of the photographing accessory case 38 when the close-up lens 30 is accommodated is shortened. This is advantageous.
In addition, the holding force that the inner surface of the outer cylindrical portion 54 of the second case 50 is detachably coupled to the outer peripheral surface of the tip portion 32B of the frame body 32. In the present embodiment, the plurality of bulging portions 5402 are frame bodies. After attaching the close-up lens 30 covered with the second case 50 to the lens barrel 16 by appropriately setting the holding force to be detachably coupled to the outer peripheral surface of the tip 32B of the 32, the second case The second case 50 is held only when the main body 12 of the camera 10 is grasped with one hand and the main body 12 of the camera 10 is grasped with the other hand, that is, when the main body 12 larger than the frame body 32 is grasped and pulled away with a larger force. The frame 32 may be detachable. Such a configuration is more advantageous for preventing the close-up lens 30 from being scratched, and more advantageous for preventing dust from adhering. .

In addition, in a state where the close-up lens 30 is accommodated in the photographing accessory case 38, the second case 50 is formed to have a dimension that protrudes from the tip of the outer cylindrical portion 44 of the first case 40, and the second case 50 is formed. When removing the case 50 from the first case 40, the upper plate portion 52 of the second case 50 may be gripped. In this case, the notch 4402 is unnecessary, but if configured as in the embodiment, This is advantageous for shortening the dimension along the optical axis direction of the close-up lens 30 of the photographing accessory case 38 when the close-up lens 30 is accommodated.
In the embodiment, the case where the engagement / disengagement portion 46 is provided on the bottom plate portion 42 of the first case 40 has been described. However, the engagement / disengagement portion 46 may be provided on the outer cylinder portion 44. As the structure of the portion 46, various conventionally known structures can be employed.
In the embodiment, a plurality of bulging portions 5402 are formed on the inner surface of the outer cylindrical portion 54 of the second case 50, and these bulging portions 5402 can be engaged with and disengaged from the outer peripheral surface of the front portion 32B of the frame body 32. However, the bulging portion 5402 may be omitted, and the inner surface of the outer cylindrical portion 54 may be directly engaged with and disengaged from the outer peripheral surface of the front portion 32B of the frame body 32.
In the embodiment, the case where the photographing accessory is a close-up lens has been described. However, the photographing accessory can be applied to various other things such as a conversion lens and a filter.

(A) is a perspective view of the camera with the close-up lens attached to the tip of the lens barrel, and (B) is a perspective view of the camera with the second case of the accessory for photographing attached to the close-up lens. It is. It is sectional drawing of a close-up lens. (A) is a top view of the accessory case for imaging | photography which accommodated the close-up lens, (B) is the cross-sectional front view. It is a side view of the accessory case for imaging | photography which accommodated the close-up lens. (A) is a perspective view of the first case, and (B) is a sectional front view of the first case. (A) is a perspective view of the second case, (B) is a sectional front view of the second case. It is explanatory drawing at the time of taking out a close-up lens from the accessory case for imaging | photography.

Explanation of symbols

30 …… Close-up lens, 32 …… Frame body, 38 …… Shooting accessory case, 40 …… First case, 42 …… Bottom plate portion, 44 …… Outer cylinder portion, 46 …… Unlocking portion, 50… ... second case, 52 ... upper plate part, 54 ... outer cylinder part.

Claims (7)

A photographic accessory case comprising a framing body and an optical member supported inside the framing body and containing a photographic accessory in which the base of the frame body is attached to the tip of a camera barrel,
The photographing accessory case comprises a first case and a second case,
The first case has a bottom plate portion having an outer diameter larger than the outer diameter of the frame body, and an inner diameter that is erected from the outer periphery of the bottom plate portion and whose inner diameter is larger than the outer diameter of the frame body. An outer cylinder portion formed, and an engagement / disengagement portion that is provided on the bottom plate portion or the outer cylinder portion and is detachably coupled to a base portion of the frame body,
The second case is provided with an upper plate portion having an outer diameter larger than the outer diameter of the frame body, and an outer diameter of the upper case portion from the outer periphery of the upper plate portion. An outer cylinder portion that is formed to have a size that is inserted into the frame body and that has an inner diameter that is detachably coupled to a front portion of the frame body that is positioned opposite to the base portion.
An accessory case for photography.   The projecting height of the outer cylinder portion of the first case from the bottom plate portion is such that the base portion of the frame body is coupled to the engagement / disengagement portion, and the outer portion of the second case is attached to the front portion of the frame body. In a state in which the cylindrical portions are coupled, the tip of the outer cylindrical portion of the first case and the upper plate portion of the second case are positioned in the vicinity of each other in the axial direction of the photographing accessory. The accessory case for photography according to claim 1 characterized by things.   The outer cylinder of the second case which is formed in an open shape toward the tip of the outer cylinder part at a plurality of locations spaced in the circumferential direction of the outer cylinder part of the first case and is accommodated inside the outer cylinder part The photographing accessory case according to claim 1, wherein a notch for locking a finger to the portion and taking out the outer cylindrical portion of the second case is formed.   A male screw that can be screwed into a female screw at the tip of a camera barrel is formed at the base of the frame body, and the engagement / disengagement portion is erected from the bottom plate portion inside the outer cylinder portion, and is engaged / disengaged from the male screw. 2. The photographing accessory case according to claim 1, wherein the photographing accessory case is formed of an inner cylinder portion having an inner diameter.   The bottom plate portion of the first case is formed with an outer diameter larger than that of an outer cylinder portion, and the bottom plate portion is formed with a flange that extends annularly outward in the radial direction of the outer cylinder portion. Item 1. An accessory case for photographing according to Item 1.   A plurality of bulging portions bulging radially inward of the inner surface are formed on the inner surface of the outer cylindrical portion of the second case at intervals in the circumferential direction, and these bulging portions are opposite to the base portion. 2. The accessory case for photographing according to claim 1, wherein the accessory case is detachably coupled to an outer peripheral surface of a front portion of the frame body positioned. 2. The photographing accessory case according to claim 1, wherein both the first case and the second case are made of a material softer than the frame.

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