JP6570180B2 - Document camera - Google Patents

Description

  The present invention provides a camera head at the tip of an arm that is rotatably mounted on a base, images documents such as documents and models placed on the mounting surface of the base with the camera head, and uses the image on a monitor TV. The present invention relates to a document camera that outputs or projects onto a screen with a video projector.

  As one type of document camera, Japanese Patent Application Laid-Open No. 2013-121051 discloses a base provided with an operation unit, a first arm assembled to the front end of the center of the base so as to be rotatable in the front-rear direction, There is disclosed a document camera including a second arm that is assembled to the front end portion of the arm so as to be rotatable in the front-rear direction, and a camera head that is assembled to the front end portion of the second arm so as to be rotatable in the front-rear direction.

  In this document camera, an arm storage recess is formed in the center of the base. And the 1st arm is assembled | attached to the base so that rotation is possible between the lying position which falls in the arm storage recessed part of a base, and the standing position which stands up from the front-end part of a base, and extends diagonally forward. . The second arm is assembled so as to be rotatable between a lying position where the second arm falls on the first arm and a standing position standing from the first arm or a parallel extending position extending from the first arm in parallel to the first arm. ing. Further, the camera head is assembled so as to be rotatable between a position rising from the second arm and a parallel extending position extending in parallel to the second arm.

  When the document camera is not used, the first arm can be folded into the arm storage recess, and the camera head and the second arm can be folded into the first arm with the camera head in the parallel extension position. In the folded state, the upper surfaces of the second arm and the camera head are substantially flush with the upper surface of the base.

  In the above-described conventional document camera, the first arm and the second arm are overlapped and stored in the arm storage recess, so that it is difficult to reduce the thickness when the document camera is folded.

  On the other hand, in the document camera disclosed in Japanese Patent Application Laid-Open No. 2011-119554, a lying position where the first arm falls on the side surface of the base, and a standing position where the first arm stands up from the front end of the base and extends obliquely forward. It is assembled | attached to the front side edge part of the base in the front-back direction so that rotation in the front-back direction is possible. The second arm falls between the first arm and the lying position, and the front-rear direction between the standing position rising from the first arm or the parallel extending position extending from the first arm in parallel to the first arm. It is assembled to be rotatable. The camera head is assembled to the tip of the second arm so as to be pivotable in the front-rear direction, and protrudes from the second arm to the inside of the base.

  When the document camera is folded, the side surfaces of the first arm and the second arm are overlapped with each other and the overlapped arms are overlapped with the side surface of the base. The camera head is superimposed on the front surface of the base. In this way, the arms of the arms are not overlapped, but the sides of the arms are overlapped, so that the thickness of the document camera when folded can be reduced. However, since the first arm and the second arm are superimposed on the side surface of the base, it is difficult to reduce the width of the document camera when folded.

JP 2013-121051 A Japanese Patent Application Laid-Open No. 2011-119954

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a document camera that can reduce the thickness and width when folded.

The invention described in claim 1 is a base, a first arm assembled to the front end portion of the base so as to be pivotable in the front-rear direction, and a first arm assembled to the front end portion of the first arm so as to be pivotable in the front-rear direction. 2 arms, and a camera head assembled to the front end of the second arm so as to be pivotable in the front-rear direction,
The first arm is assembled to the base so as to be rotatable between a parallel extension position where the first arm extends forward in parallel with the base and a standing position where the first arm stands upward from the front end of the base,
The second arm is rotatable between a parallel position where the second arm is parallel to the first arm and a standing position where the second arm stands up from the first arm, and extends from the first arm to the front in parallel with the standing position and the first arm. It is assembled so that it can rotate between the parallel stretch positions,
The camera head is assembled so as to be rotatable between a parallel position where the camera head is parallel to the second arm and a position where the camera head stands from the second arm.
When folding the camera, set the first arm in the parallel extension position, the second arm in the parallel position, and the camera head in the parallel position,
A document camera in which the upper surface of the base, the upper surface of the first arm, the upper surface of the second arm, and the upper surface of the camera head are substantially flush when the camera is folded,
Each of the first arm and the second arm has a U-shaped planar shape composed of a pair of left and right arm pieces and a bottom portion connecting both arm pieces,
When the camera is folded, the second arm falls between both arm pieces of the first arm, and the camera head falls between both arm pieces of the second arm.

  According to a second aspect of the present invention, in the document camera according to the first aspect, the width of the base and the width of the first arm are approximately the same.

  According to a third aspect of the present invention, in the document camera according to the first aspect, the base is provided with suction means for detachably sucking the base on the base mounting surface.

    According to a fourth aspect of the present invention, in the document camera according to the first aspect, a support plate extending forward from a front end portion of the base is provided on a bottom surface of the base.

  According to a fifth aspect of the present invention, in the document camera according to the first aspect, when the camera is folded, a gap for inserting a finger is formed between the tip of the camera head and the bottom of the U-shape of the second arm. Features.

According to a sixth aspect of the present invention, in the document camera according to the first aspect, the third arm is interposed between the second arm and the camera head so that the third arm can be rotated in the front-rear direction. Assembly,
The camera head is assembled so as to be rotatable in the left-right direction of the third arm.

  According to a seventh aspect of the present invention, in the document camera according to the sixth aspect, the fourth arm is interposed between the third arm and the camera head, and the camera head is moved by a rotation shaft extending in the longitudinal direction of the fourth arm. The fourth arm is assembled to the tip of the fourth arm so as to be rotatable around a rotation axis.

  According to the first aspect of the present invention, when the camera is folded, the second arm falls on the inside of the first arm extending forward from the front end of the base, and the camera head falls on the inside of the second arm. Therefore, the base, the first arm, and the second arm do not overlap vertically. Further, since the side surfaces of the base, the first arm, and the second arm do not overlap each other, the width when the camera is folded can be made as narrow as possible, and the base can be folded into a flat shape.

  According to the second aspect of the present invention, since the width of the base and the width of the first arm are approximately the same size, it can be folded into a rectangular compact form.

  According to the third aspect of the present invention, when the camera is used, the base is placed on the base mounting surface by the magnet or sucker serving as the suction means, so that the camera head located diagonally above the front of the base can be Therefore, it is possible to prevent the camera head from falling over and being unable to take an image due to the weight of the camera head.

  According to the fourth aspect of the present invention, when the camera is used, the support plate prevents the camera head located obliquely above the front of the base from falling down on the base mounting surface due to the weight of both arms and the camera head and being unable to image. Can prevent.

  According to the fifth aspect of the present invention, when the folded camera is set in a use state, the camera head is pulled by putting a finger in the gap between the tip of the camera head and the bottom of the U-shape of the second arm. If it wakes up, the camera head stands up from the second arm, so it is easy to use.

  According to the sixth aspect of the present invention, it is possible to widen the shooting use range by the camera head, and the usability is improved.

  According to the seventh aspect of the present invention, it is possible to further expand the photographing use range by the camera head, and the usability is improved.

It is a perspective view which shows the folded form of the document camera which concerns on 1st Example of this invention. It is a perspective view which shows one form of use of the document camera. It is the partially broken side view which shows the 1st arm, 2nd arm, 3rd arm, 4th arm, and camera head of the document camera. It is a perspective view which shows the form in the middle of setting the document camera to a use form. It is a perspective view which shows the form in the middle of setting the document camera to a use form. It is a perspective view which shows the form in the middle of setting the document camera to a use form. 3 is a perspective view showing a third arm, a fourth arm, and a camera head 16 of the document camera. FIG. 3 is a perspective view showing a third arm, a fourth arm and a camera head 16 of the document camera. It is a perspective view which shows the support plate for the document camera. It is a perspective view which shows the support plate. It is a perspective view which shows the document camera which attached the support plate. It is a perspective view which shows another support plate. It is a perspective view which shows the document camera installed in the base. It is a perspective view which shows the other base for document cameras. It is a perspective view which shows the document camera installed in the other base. It is a perspective view which shows the document camera which concerns on 2nd Example. It is the partially broken side view which shows the 1st arm, 2nd arm, 3rd arm, 4th arm, and camera head of the document camera which concerns on 2nd Example.

  The present invention will be described below with reference to the drawings. FIG. 1 shows a folded form of a document camera 10 according to a first embodiment of the present invention. FIG. 2 shows one usage pattern of the document camera 10. The document camera 10 includes a base 11, a first arm 12, a second arm 13, a third arm 14, a fourth arm 15, and a camera head 16.

  The base 11 is a flat box having a substantially rectangular planar shape, and includes a power switch 11a on the upper surface, a zooming switch 11b for adjusting the focal length of the imaging lens, an autofocus switch 11c for adjusting the focus of the imaging lens, and the like. Various operation switches are provided. A recess 11 d for assembling the base end of the first arm 12 is formed at the front end of the base 11. The base 11 has a permanent magnet 17 built therein.

  The first arm 12 has a U-shaped planar shape including a pair of left and right arm pieces 12 a and 12 b and a bottom portion 12 c that connects the arm pieces 12 a and 12 b, and has a width and a base having the same dimensions as the width of the base 11. It has the same thickness as the thickness of the base 11. A shaft portion 12 d that fits into the recess 11 d of the base 11 is integrally provided on the bottom portion 12 c of the first arm 12, and is assembled to the base 11 so as to be rotatable in the front-rear direction by the first rotation shaft 18. . The first arm 12 extends in parallel with the base 11 to the front of the base 11 (see FIG. 1), and stands up from the base 11 at an angle of about 60 degrees (see FIG. 2). ) To the base 11 so as to be rotatable between the two, and is held in the parallel extension position or the standing position by a click mechanism built in the shaft portion 12d.

  Similar to the first arm 12, the second arm 13 has a U-shape consisting of a pair of left and right arm pieces 13a, 13b and a bottom portion 13c that connects the arm pieces 13a, 13b. 19, the bottom portion 13c is assembled between the tip portions of the arm pieces 12a and 12b of the first arm 12 so as to be rotatable in the front-rear direction. The width of the second arm 13 is approximately the same as the distance between the arm pieces 12 a and 12 b of the first arm 12. The second arm 13 has the same thickness as the first arm 12. The second arm 13 falls between the arm pieces 12 a, 12 b of the first arm 12 and falls in parallel (side-by-side) to the first arm 12 (see FIG. 1), and from the tip of the first arm 12 to the second arm 13. The first arm is rotatable between a parallel extending position (see FIG. 2) extending in parallel with one arm 12 and can be rotated between an upright position rising from the first arm 12 forward or backward. 12 is assembled. The second arm 13 is held at an arbitrary rotation position by a friction mechanism provided along with the second rotation shaft 19.

  The third arm 14 has an elongated rectangular planar shape, and has a width substantially the same as the distance between the arm pieces 13 a and 13 b of the second arm 13 and a thickness the same as the second arm 13. The base end portion of the third arm 14 is assembled between the distal end portions of both arm pieces 13a and 13b of the second arm 13 so as to be rotatable in the front-rear direction by the third rotation shaft 20. The third arm 14 falls between the arm pieces 13a and 13b of the second arm 13 and falls in parallel (side by side) to the second arm 13 (see FIG. 1), and forward or backward from the second arm 13. The second arm 13 is assembled to the second arm 13 so as to be rotatable between a standing position (see FIG. 2). And it is hold | maintained in arbitrary rotation positions by the friction mechanism attached to the 3rd rotation axis | shaft 20. FIG.

The fourth arm has the same width and thickness as the third arm, and extends to the front end of the third arm from the front end of the third arm 14 by the fourth rotation shaft 21 (see FIG. 1). ) And a position at which the third arm 14 bends to the left or right from the tip thereof.
The camera head 16 has an elongated rectangular planar shape, has the same width and thickness as the fourth arm 15, and is provided with an imaging lens 16a on the bottom surface of the distal end portion. The camera head 16 is assembled to the distal end portion of the fourth arm 15 so as to be rotatable around the fifth rotation shaft 22 by a fifth rotation shaft 22 extending in the fourth longitudinal direction.

As shown in FIG. 1, in a state where the third arm 14, the fourth arm 15 and the camera head 16 are aligned, these three members fall between the arm pieces 13a and 13b of the second arm 13, and when they fall, The length is set so that a gap 10 a is formed between the bottom 13 c of the two arms 13 and the front end of the camera head 16 so that a finger can be inserted.
As shown in FIG. 3, the front end of the camera head 16 is provided with a latching step 16 b that can be hooked with a finger.

  A protruding end portion 14 a that protrudes outward from the third rotation shaft 20 is provided on the upper surface of the base end portion of the third arm 14. On the other hand, the bottom portion 12c of the first arm 12 is formed with a contact step portion 12e on which the lower surface of the protruding end portion 14a is placed when the third arm 14 is in the lying position. When the third arm 14, the fourth arm 15, and the camera head 16 are in the lying position, putting the finger in the gap 10 a and hooking the finger on the latching step portion 16 b to raise the camera head 16 causes the tip of the protruding end portion 14 a to Since the portion comes into contact with the contact step portion 12e, the second arm 13 stands up by a predetermined angle from the lying position with the contact portion of the protruding end portion 14a as a fulcrum.

The structure of the document camera 10 according to the present embodiment is as described above. Next, the usage method will be described.
The document camera 10 is folded and stored or carried as shown in FIG. 1 when not in use. In the folded state, the first arm 12 is in the parallel extension position, the second arm 13 falls between the arm pieces 12a and 12b of the first arm 12, and the third arm 14, the fourth arm 15 and the camera head 16 are Aligned in series, the second arm 13 falls between the arm pieces 13a and 13b. When the document camera 10 is folded, the document camera 10 has an elongated and flat box shape, and can be folded compactly.

  In order to image a document with the document camera 10, as shown in FIGS. 3 and 4, first, a finger is put into the gap 10a between the camera head 16 and the bottom 13c of the second arm 13, and the latching step 16b is moved. A finger is placed and the camera head 16 is raised in the direction of arrow A. Accordingly, the tip of the protruding end 14a of the third arm contacts the contact step 12e of the first arm 12, so that the second arm 13 is moved from the lying down position with the contact of the protruding end 14a as a fulcrum. Stand up in the direction of arrow B by a predetermined angle. Therefore, as shown in FIG. 5, the second arm 13 is further rotated in the direction of the arrow B to stand up from the first arm 12. Next, as shown in FIG. 6, the first arm 12 is rotated in the direction of the arrow C to stand up from the front end of the base 11. Subsequently, the second arm 13 is further rotated, and is rotated from the distal end portion of the first arm 12 to a position extending in parallel with the first arm 12. Through the above operation procedure, the document camera 10 is set to the first usage pattern shown in FIG.

  The document camera 10 set in the first usage pattern is placed on a desk or table having a magnetic top plate such as an iron plate, and is attracted to the top plate by a permanent magnet 17 built in the base 11. The material that is fixed and placed on the top is imaged by the camera head 16.

  When imaging the material, as shown in FIG. 7, the material in the left and right areas below the camera head 16 is imaged by rotating the camera head 16 left and right around the fourth rotation shaft 21. Can do. Furthermore, as shown in FIG. 8, by rotating the camera head 16 around the fifth rotation shaft 22, the imaging direction can be directed from the lower side of the camera head 16 to the horizontal direction or upward.

  When the document camera 10 is used, the use of the support plate 30 as shown in FIG. The support plate 30 shown in FIG. 9 is made of a thin iron plate, and includes a first plate 31 and a second plate 32 assembled to the first plate 31. The support plate 30 includes a first plate in which the first plate 31 and the second plate 32 are flush with each other, and a second plate so that the first plate 31 and the second plate 32 form an L shape as shown in FIG. A second configuration in which 32 is bent from one end of the first plate 31 can be exhibited.

In order to use the document camera 10 using the support plate 30, as shown in FIG. 11, the support plate 30 is bent into an L shape, and the base of the document camera 10 is placed on the second plate 32 that stands up from the first plate 31. 11 is adsorbed by a permanent magnet 17.
By using the support plate 30, even when the base 11 cannot be attracted to the top plate by the permanent magnet 17 such as a desk or table having a wooden top plate, the document camera 30 can be set up on the desk or the like.

When the document camera 10 is used, the use of the document camera 10 can be further improved by using the support plate 40 shown in FIG. 12, the pedestal 50 shown in FIG. 13, and the pedestal 60 shown in FIGS. .
The support plate 40 shown in FIG. 12 is made of a single thin iron plate and has an area necessary for use as a stage on which data is placed. The document is placed on the support plate 40, and the document camera 10 is attracted to the support plate 40 by the permanent magnet 17 so that the document on the support plate 40 can be imaged.

The pedestal 50 shown in FIG. 13 has an upper surface made of a magnetic material such as a thin iron plate, and when the document camera 10 stands up when the base 11 is attracted to the upper surface of the pedestal 50 by the permanent magnet 17, the document camera 10 It has the required weight so that it will not fall over due to its weight.
By using this pedestal 50, the camera head 16 of the document camera 10 can be set at a high position.

A pedestal 60 shown in FIG. 14 has an upper surface 61 made of a magnetic material, has a function as a charger, and can be connected to the base 11 of the document camera 10 via an attached connector 62.
The document camera can be installed upright on the pedestal 60 by attracting the base 11 to the upper surface 61 of the pedestal 60 with the permanent magnet 17. The pedestal 60 has a required weight so that the document camera 10 does not fall down due to the weight of the document mela 10 placed upright.

  According to the document camera 10 according to the present embodiment, when the camera head 16 is raised, the distal end portion of the protruding end portion 14 a of the third arm 14 provided at the base end portion of the camera head 16 is in contact with the first arm 12. Since the second arm 13 stands by a predetermined angle from the lying position with the contact portion of the projecting end portion 14a as a fulcrum, the second arm 13 is caused to set the document camera 10 to the use state. The direction can be determined instantly. For this reason, the operation procedure for setting the folded document camera 10 to the use state is easy to understand and easy to use.

  When the document camera 10 is folded, the second arm 13 lies sideways inside the first arm 12 extending forward from the front end of the base 11, and the third arm 14 and the fourth arm are located inside the second arm 13. 15 and the camera head 16 are lying down sideways. Therefore, the base 11, the first arm 12, the second arm 13, the third arm 14, the fourth arm 15, and the camera head 16 do not overlap vertically. In addition, since the width of the base 11 and the width of the first arm 12 are the same, the document camera 10 can be folded into a flat and elongated box shape, and is not bulky, which is convenient for storage and carrying.

  By attracting the base 11 to the top plate and side plates made of a magnetic material, the support plates 30 and 40, and the pedestals 50 and 60 with the permanent magnet 17, it is possible to prevent the document camera from falling down due to its weight and being unable to image.

  When the folded document camera 10 is set in a use state, the camera head 16 can be caused by inserting a finger into the gap between the tip of the camera head 16 and the bottom 13c of the U-shaped second arm 13, which is easy to use. Is good.

  Since the camera head 16 can be rotated to the left and right, and the direction of the imaging lens 16a can be changed by turning the camera head 16, it is possible to widen the shooting use range and improve usability.

FIG. 16 shows a document camera 10A according to the second embodiment of the present invention. A notch 12f is formed in the center of the bottom of the first arm 12 of the document camera 10A. As shown in FIG. 17, when the camera head 16 is raised, the protruding end 14b of the third arm 14 contacts the installation surface of the document camera 10A through the notch 12f, and the contact portion of the protruding end 14b is used as a fulcrum. Thus, the second arm 13 stands up by a predetermined angle from the lying position.
In addition, since the other structure of a present Example is the same as the document camera 10 which concerns on 1st Example, the same code | symbol is attached | subjected to the same structural member and description is abbreviate | omitted.

  In the document cameras 10 and 10A according to the first and second embodiments described above, the permanent magnet 17 is built in the base 11, but instead of the permanent magnet 17, a suction cup, double-sided adhesive tape, adhesive gel, etc. are provided on the bottom surface of the base 11. May be provided.

DESCRIPTION OF SYMBOLS 10, 10A ... Document camera 10a ... Gap 11 ... Base 12 ... 1st arm 12a, 12b ... Arm piece 12c ... Bottom part 12e ... Contact step part 13 ... 2nd arm 13a, 13b ... Arm piece 13c ... Bottom part 14 ... 1st 3 arms 14a, 14b ... projecting end 15 ... 4th arm 16 ... camera head 16a ... imaging lens 17 ... permanent magnet 18 ... first rotating shaft 19 ... second rotating shaft 20 ... third rotating shaft 21 ... third 4 rotation shafts 22 ... fifth rotation shafts 30, 40 ... support plates

Claims (7)

A base, a first arm assembled to the front end of the base so as to be pivotable in the front-rear direction, a second arm assembled to the tip of the first arm so as to be pivotable in the front-rear direction, and a tip of the second arm Equipped with a camera head that can be pivoted back and forth.
The first arm is assembled to the base so as to be rotatable between a parallel extension position where the first arm extends forward in parallel with the base and a standing position where the first arm stands upward from the front end of the base,
The second arm is rotatable between a parallel position where the second arm is parallel to the first arm and a standing position where the second arm stands up from the first arm, and extends from the first arm to the front in parallel with the standing position and the first arm. It is assembled so that it can rotate between the parallel stretch positions,
The camera head is assembled so as to be rotatable between a parallel position where the camera head is parallel to the second arm and a position where the camera head stands from the second arm.
When folding the camera, set the first arm in the parallel extension position, the second arm in the parallel position, and the camera head in the parallel position,
A document camera in which the upper surface of the base, the upper surface of the first arm, the upper surface of the second arm, and the upper surface of the camera head are substantially flush when the camera is folded,
Each of the first arm and the second arm has a U-shaped planar shape composed of a pair of left and right arm pieces and a bottom portion connecting both arm pieces,
A document camera characterized in that, when the camera is folded, the second arm falls between both arm pieces of the first arm and the camera head falls between both arm pieces of the second arm.   2. The document camera according to claim 1, wherein the width of the base and the width of the first arm are substantially the same size.   2. The document camera according to claim 1, wherein suction means for detachably attaching the base to the base mounting surface is provided on the base.   The document camera according to claim 1, further comprising a support plate extending forward from a front end portion of the base on a bottom surface of the base.   2. The document camera according to claim 1, wherein when the camera is folded, a gap into which a finger enters is formed between the tip of the camera head and the bottom of the U-shaped second arm. A third arm is interposed between the second arm and the camera head, and the third arm is assembled to the second arm so as to be pivotable in the front-rear direction.
2. The document camera according to claim 1, wherein the camera head is assembled so as to be rotatable in the left-right direction of the third arm.   A fourth arm is interposed between the third arm and the camera head, and the camera head is assembled to the tip of the fourth arm so as to be rotatable around the rotation axis by a rotation axis extending in the longitudinal direction of the fourth arm. The document camera according to claim 6.

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