JP2858711B2 - Image input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input device, and more particularly, to an image input device for capturing a document and transmitting a video signal.

[0002]

2. Description of the Related Art A main body having a document mounting surface formed on an upper surface and a main circuit board built therein, a pair of arms which can be raised and lowered on the main body, and a CCD provided at a free end of the arm. An image input device composed of a built-in image pickup head and a pair of illuminating units for illuminating the original mounting surface is disclosed in Japanese Utility Model Laid-Open No. 1-117172 and 1-111773.
No., Japanese Utility Model Application No. 1-119275, Japanese Utility Model Application No. 1-1927.
No. 6, each publication. Such an image input device is convenient because it can easily produce images on a CRT from a flat printed matter or a photograph placed on a document placing surface to a three-dimensional object such as a part.

By the way, in this image input device, since a light original and a heavy component are placed on the original placing surface as described above, a metal plate or a thick resin plate is used for the original placing surface. , To ensure its flatness. The document placing surface is screwed to the main body. The metal plate and the resin plate are fixed from the bottom side of the main body so that the screws are not imaged together with the document on the CRT.

[0004]

However, the original placing surface on which the original is repeatedly placed may be stained or scratched. In this state, for example, a small original or an original recorded on a transparent sheet is imaged. Occasionally, an image in which the dirt and scratches are mixed in a document is displayed on a CRT, so that accurate information may not be transmitted. To solve such a problem, the contaminated metal plate or resin plate may be replaced to keep the document placing surface clean. However, in the above-described conventional image input device, the metal plate or resin plate is Since it was screwed from the bottom side of the part, it could not be easily replaced by the user. Further, since a metal plate or a thick resin plate is used for the document placing surface, the weight of the image input device is increased.

[0005] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide an image input apparatus which enables a user to easily maintain a document placing surface in a clean state and easily, and reduces the weight while securing the flatness of the document placing surface.

[0006]

According to the present invention, there is provided an image input apparatus, comprising: a solid-state imaging device for imaging a document;
Imaging head with built-in element
The imaging head is placed above the main body in the upright position.
An image input device comprising:
The sheet on which the original is placed on the top of the main unit can be removed
Provided, attached to the top of the main body at the edge of this sheet
Positioning projection for determining the position when
And a clip part to be gripped when detached from the upper surface of the
It is a thing. The main body has a honeycomb structure.
Things. Also, the projecting portion has the clip portion inside.
A pair is provided symmetrically at the center of the heart, and the seat is
It is symmetrical about the clip part.
You.

[0007]

FIG. 1 shows an example of an image input apparatus according to the present invention when a document table sheet is replaced. The image input device 2 includes a main body 3, which will be described in detail later, an imaging head 4 for imaging a document, a main arm 5 for rotatably supporting the imaging head 4, and a pair of illumination units 6 provided on the main arm 5. , 7. The main arm 5 is provided so as to be able to move up and down with respect to the main body 3, and the lighting units 6 and 7 are provided so as to be slidable and up and down with respect to the main arm 5 via a column 8. When the main arm 5 and the lighting units 6 and 7 are respectively turned down, they are stored in the outline of the main body unit 3 as shown in FIG. 4, so that the image input device 2 becomes compact and portable. Becomes

A sheet mounting plate 13 is provided on the upper surface of the main body 3.
Are fixed by screws 14, and a thin and flexible white document table sheet 15 is removably mounted on the upper surface of the sheet mounting plate 13. The platen sheet 1
Reference numeral 5 includes a flexible sheet or plate, for example, a vinyl sheet or a plastic sheet. A clip portion 15a is formed at the center of the back edge of the document table sheet 15 when the clip is removed.
A pair of protrusions 15b and 15c for positioning at the time of mounting are formed at symmetrical positions . That is, the manuscript
The base sheet 15 has a symmetrical shape with respect to the clip portion 15a.
So that even if one side gets dirty,
It can be used with the other side facing up. The screw 1
4 is shielded by the document table sheet 15, the sheet mounting plate 13 can be fixed to the main body 3 from the upper surface side of the main body 3. For this reason, in the image input device of the present invention,
Conventionally, the sheet mounting plate 13 which is operated from the bottom side of the main body 3
This can be easily performed as compared with the case where the screws are attached to the main body 3.

An operation panel 16 is provided on the front side of the main body 3.
However, on the back side, there are provided bracket portions 17 for pivotally supporting the main arm 5 so as to be able to move up and down. The operation panel 16 is provided with various switches such as a main switch 18, a lighting switch 19 for lighting the illumination units 6 and 7, and an imaging switch 20 for imaging. The bracket 17 is provided with a lock mechanism (not shown), and the main arm 5 is stopped at the standing position shown in FIG. 1 or the storage position shown in FIG.

FIG. 2 shows the main body in which the internal mechanism of the bracket is omitted and the sheet mounting plate and the cover of the bracket are partially broken. This cover 17a
Has a notch 25 formed at the front center so that the main arm 5 can be folded. Further, a pair of slots 26 and 27 into which the protrusions 15b and 15c are fitted are formed on the front surface of the cover 17a. This cover 17a
After the sheet mounting plate 13 is mounted, it is fixed to the main body 3 having a honeycomb structure as shown by screws 14. The sheet mounting plate 1 screwed to the upper surface of the main body 3 as described above.
3 is not deformed or distorted, so that even if the thickness is reduced, the flatness of the document table sheet 15 is ensured.

As shown in FIG. 1, the main arm 5 has a box-shaped case main body 30 and a pair of arm portions 32, 33 formed on the case main body 30 and supporting the imaging head 4.
Consists of Locking claws are formed at the ends of the arm portions 32 and 33, respectively. These locking claws are fitted into locking portions formed on the main body 3, and the main body 3 and the main arm 5 are engaged.
Do a lock with. A main circuit board 34 for performing image processing is provided inside the case main body 30 as shown in FIG.
In addition to a control circuit for controlling the driving of the CCD, a video signal processing circuit for converting a photoelectric signal obtained from the CCD into a video signal, an adjustment circuit used for adjusting these circuits at a factory, and the like are incorporated.

The image pickup head 4 has a CCD 37 and this C
It has a built-in zoom lens 38 arranged below the CD 37. When the zoom lens 38 forms an image of the document 39 placed on the document table sheet 15 on the CCD 37, the CCD 37 converts the optical image into a photoelectric signal. This photoelectric signal is transmitted to the main circuit board 34 via a code, and is converted into a video signal by the video signal processing circuit. This video signal is output to the CRT 41 via the connection cord 40. Reference numeral 42 denotes a power cord.

The illuminating units 6 and 7 are arranged symmetrically with respect to the optical axis of the zoom lens 38, but have the same configuration. The lighting unit 6 includes a lamp 45 that emits daylight,
A reflecting plate 46 for reflecting light emitted obliquely upward from
A substantially U-shaped protection cover 47 having an opening formed on the lower side. The reflective surface 4 is provided on the outer inner wall of the protective cover 47.
A regulating plate 49 for preventing light from the lamp 45 from directly irradiating the document table sheet 15 is formed at an inner end of the plate 8. Since the column 8 is attached to the main arm 5 with an appropriate friction, the lighting units 6 and 7 do not slide or rotate carelessly after being set at a desired position.

Hereinafter, the operation of the image input apparatus according to the present invention will be described. This image input device 2
Connects the connection cord 40 to the CRT 41 and the power cord 42 to the A
To the C line, and place the original 39 on the platen sheet 1
Place on 5. Even if the original 39 is a metal part and is heavy, for example, the original table sheet 15 is a sheet mounting plate 13 screwed to the main body 3 having a honeycomb structure.
Since it is placed on a flat surface, the flatness is not impaired because it does not dent.

Thereafter, when the main switch 18, the lighting switch 19, and the imaging switch 20 are sequentially turned on, the original 39
Is imaged on the CCD 37 via the zoom lens 38.
The photoelectric signal sent from the CCD 37 is converted into a video signal by the main circuit board 34, output to the CRT 41 via the connection cord 40, and is imaged.

[0016] In addition, the document platen sheet 15 is provided with a document 39
If the is repeatedly placed, it may become dirty or scratched. At this time, when the clip portion 15a placed on the back side of the notch 25 is grasped and turned up from the sheet placing plate 13, the projecting portions 15b and 15c come off the slots 26 and 27, so that the document table sheet 15 is removed. It can be easily removed from the main body 3. When the projecting portions 15b and 15c of the new document table sheet 15 are fitted into the slots 26 and 27, respectively, and the document table sheet 15 is set on the sheet placing plate 13, the document table sheet 15 Positioned in position. By exchanging the document table sheet 15, the document placing surface of the image input device 2 of the present invention can always be kept clean. The platen sheet 15 is clipped
Since it is symmetrical about the part 15a,
Turn the sheet 15 over so that the surface without scratches or dirt faces up
The projections 15b and 15c are fitted into the slots 26 and 27, respectively.
The next image can be taken immediately,
It is also economical.

After use, the document 39 is removed from the platen sheet 15, the main switch 18 is turned off, and the CRT
Remove the connection cord 40 from the power cord 41 and the power cord 42 from the AC line. Then, the lighting units 6 and 7 are lowered and slid, and are brought into close contact with the main arm 5. Thereafter, when the main arm 5 is folded down, the main body 3 is folded together with the illuminating portions 6 and 7 within the outline of the main body portion 3, so that the image input device 2 has a compact shape that is convenient to carry as a whole. In the image input device 2, the document table sheet 1
Since not only the sheet mounting plate 13 but also the sheet mounting plate 13 is made thinner, its weight can be reduced. In the above-described embodiment, the document table sheet 15 is made white on the document placing surface, but the document table sheet 15 may be of another color as long as it is opaque.

[0018]

As described above, according to the present invention, the image input apparatus of the present invention is removably seat for placing a document on the upper surface of the body portion is provided, the edge of the sheet, on the upper surface of the main body portion
Positioning protrusions that determine the position when attaching
The clip part that is gripped when detached from the top of the body
Since the form was, briefly grabbed the clip portion of the soiled sheet over door
And clean sheet
The fixed projection can always be easily set at a fixed position, and the surface on which the document is placed can always be kept clean. Also, since the main body has a honeycomb structure,
Even if a sheet is used for the document placing surface, its flatness can be ensured, so that its weight can be reduced and the overall thickness when stored can be reduced. Also protruding
Parts are provided in pairs symmetrically about the clip part.
So that the seat is symmetrical about the clip.
So that even if one side of the sheet gets dirty, it will be turned over
Use the same sheet with the other clean side facing up.
And the next image can be taken promptly.
It is also economical.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an image input device when a document table sheet is replaced.

FIG. 2 is a perspective view showing a part of a main body part cut away.

FIG. 3 is a perspective view of the image input device during imaging.

FIG. 4 is a perspective view of the image input device when stored.

[Explanation of symbols]

 Reference Signs List 2 Image input device 3 Main unit 4 Imaging head 5 Main arm 6, 7 Illumination unit 13 Sheet mounting plate 15 Platen sheet 34 Main circuit board 37 CCD 39 Document

Claims (3)

(57) [Claims] An imaging head unit having a built-in solid-state imaging device for imaging a document; and a supporting unit provided on the main body unit so as to be able to undulate and support the imaging head unit above the main body unit in an upright state. In the image input device, a sheet on which an original is placed is detachably provided on an upper surface of the main body, and an edge of the sheet is attached to an upper surface of the main body.
Positioning projection that determines the position when attaching
The clip part that is gripped when detached from the top of the body
An image input device, characterized in that it is formed . 2. The image input device according to claim 1, wherein said main body has a honeycomb structure. 3. The projecting portion is located at the left of the clip portion as a center.
A pair is provided at a right symmetric position, and the sheet is
It is characterized by being symmetrical about the top part
The image input device according to claim 1.