JPH05227343A - Picture input device - Google Patents

Abstract

PURPOSE:To keep an original platen to be clean at all time by setting removably a sheet of the original platen placing the original on the sheet placing plate provided to an upper side of a main body so as to simply replace a dirty sheet. CONSTITUTION:A sheet placing plate 13 is fixed to an upper side of a main body 3 with a screw 14 and a thin flexible white original platen sheet 15 is removably placed to an upper face of the sheet placing plate 13. Moreover, a flexible vinyl sheet or plastic sheet or the like is used for the original platen sheet 15. When originals are repetitively placed onto the original platen sheet 15, the sheet is dirt or damaged. When a clip 15a is grasped to tuck up the sheet placing plate 13, since projections 15b, 15c are removed from the slot, the original platen sheet 15 is simply removed from the main body 3. Then, the projections 15b, 15c of a new original platen sheet 15 are inserted to the slot respectively and the sheet is simply replaced at a prescribed position of the main body 3.

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 picking up an image of a document and transmitting a video signal.

[0002]

2. Description of the Related Art A main body having a document mounting surface formed on the upper surface thereof and a main circuit board incorporated therein, a pair of arms which can be raised and lowered on the main body, and a CCD provided on the free end side of the arms. An image input device composed of a built-in image pickup head and a pair of illuminating parts for illuminating the document mounting surface is disclosed in Japanese Utility Model Publication Nos. 1-117172 and 1-117173.
No., Actual Kaihei 1-119275, Actual Kaihei 1-1927
It is described in each publication of No. 6. Such an image input device is convenient because it can be easily visualized on a CRT from a flat printed matter or a photograph placed on the document placing surface to a three-dimensional object such as a part.

By the way, in this image input apparatus, 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. , Its flatness is secured. Further, the document mounting surface is screwed to the main body portion, but the metal plate and the resin plate are fixed from the bottom side of the main body portion so that the screw is not imaged on the CRT together with the original document.

[0004]

However, the original placing surface on which the original is repeatedly placed may be soiled or scratched, and in this state, for example, a small original or an original recorded on a transparent sheet is imaged. Occasionally, an image in which the document is mixed with the stains and scratches is displayed on the CRT, so that accurate information may not be transmitted. In order to solve such a problem, a dirty metal plate or resin plate may be replaced to keep the original placement surface clean. However, in the conventional image input device described above, the metal plate or resin plate is the main body. Since it is screwed from the bottom side of the part, the user could not easily replace it. Further, since the metal plate or the thick resin plate is used for the document mounting surface, there is a problem that the weight of the image input device becomes heavy.

The present invention has been made in view of the above circumstances.
An object of the present invention is to provide a lightweight image input device that allows a user to easily maintain the original placement surface in a clean state and also secures the flatness of the original placement surface.

[0006]

In order to achieve the above-mentioned object, in the image input apparatus of the present invention, an original placing surface on which an original is placed is formed by a sheet detachably provided on the upper surface of the main body. ing. In addition, the main body has a honeycomb structure to enhance the strength.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of an image input apparatus of the present invention when replacing a document table sheet. The image input device 2 includes a main body 3, which will be described in detail later, an imaging head 4 that captures an original, a main arm 5 that rotatably supports the imaging head 4, and a pair of illumination units 6 provided on the main arm 5. , 7 and. The main arm 5 is provided so as to be able to rise and fall with respect to the main body portion 3, and the illumination portions 6 and 7 are provided so as to be slidable and capable of being raised and lowered with respect to the main arm 5 via columns 8. When the main arm 5 and the lighting units 6 and 7 are laid down, they are housed within the outline of the main body 3 as shown in FIG. 4, so that the image input device 2 is compact and highly portable. Becomes

A sheet mounting plate 13 is provided on the upper surface of the main body 3.
Are fastened with screws 14, and a thin and flexible white platen sheet 15 is detachably placed on the upper surface of the sheet placing plate 13. The document table sheet 1
5 includes a highly flexible sheet or plate, for example, a vinyl sheet or a plastic sheet is used. The clip portion 1 to be picked up when detached from the document table sheet 15
5a and a pair of protrusions 15b for positioning when mounted,
15c and 15c are respectively formed on the back side. Screw 1
Since 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. Therefore, in the image input device of the present invention,
The sheet placing plate 13 that is conventionally performed from the bottom side of the main body unit 3
This can be done more easily than screwing to the main body 3.

An operation panel 16 is provided on the front side of the main body 3.
However, bracket portions 17 that support the main arm 5 so that the main arm 5 can be raised and lowered are provided on the rear side. 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 portion in which the internal mechanism of the bracket portion is omitted and the seat mounting plate and the cover of the bracket portion are partially broken. This cover 17a
A notch 25 is formed at the center of the front side so that the main arm 5 can be folded. Further, on the front surface of the cover 17a, there are formed a pair of slots 26, 27 into which the protrusions 15b, 15c are fitted. This cover 17a
After the sheet placing plate 13 is placed, the sheet placing plate 13 is fixed to the main body 3 having the honeycomb structure as shown by the screws 14. The sheet mounting plate 1 is screwed to the upper surface of the body 3 as described above.
Since 3 does not deform or distort, the flatness of the document table sheet 15 is ensured even if it is made thin.

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

The image pickup head 4 has a CCD 37 and a C
A zoom lens 38 arranged below the CD 37 is incorporated. 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 sent to the main circuit board 34 via a code and 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 indicates a power cord.

The illuminators 6 and 7 are arranged symmetrically with respect to the optical axis of the zoom lens 38, but since the configurations are the same, the description will be given only for the illuminator 6. The illumination unit 6 includes a lamp 45 that emits daylight color and the lamp 45.
A reflection plate 46 that reflects light emitted obliquely upward from
It comprises a substantially U-shaped protective 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.
8A and 8B, a regulating plate 49 is formed at the inner end portion thereof to prevent the light from the lamp 45 from directly irradiating the document table sheet 15. Since the pillar 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.

The operation of the image input device of the present invention thus constructed will be described below. This image input device 2
Connect the connection cord 40 to the CRT 41 and the power cord 42 to A
The original 39 is connected to each of the C lines and the original 39 is placed on the original table sheet 1.
Place on 5. Even if the original 39 is, for example, a metallic part and has a heavy weight, the original table sheet 15 is screwed to the sheet placing plate 13 on the main body 3 having a honeycomb structure.
Since it is placed on, the flatness is not impaired because it is not dented.

Thereafter, when the main switch 18, the lighting switch 19 and the image pickup switch 20 are turned on in sequence, the document 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 visualized.

Further, the document table sheet 15 becomes dirty or scratched when the document 39 is repeatedly placed.
At this time, the clip portion 1 placed on the back side of the notch 25
When 5a is gripped and rolled up from the sheet placing plate 13, the projecting portions 15b and 15c are removed from the slots 26 and 27, so that the document table sheet 15 can be easily removed from the main body portion 3. Then, when the projecting portions 15b and 15c of the new original platen sheet 15 are fitted into the slots 26 and 27, respectively, and the original platen sheet 15 is set on the sheet placing plate 13, the original platen sheet 15 is set to a predetermined position on the main body 3. Be positioned in position. By replacing the document table sheet 15, the document placement surface of the image input device 2 of the present invention can be kept clean at all times.

After use, the original 39 is removed from the original table sheet 15, the main switch 18 is turned off, and the CRT is
Remove the connection cord 40 from 41 and the power cord 42 from the AC line. Then, the illumination units 6 and 7 are laid down and slid to be brought into close contact with the main arm 5. Thereafter, when the main arm 5 is laid down, the main body 5 is folded into the outline of the main body 3 together with the illumination parts 6 and 7, so that the image input device 2 as a whole has a compact shape that is convenient to carry. Then, 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 thin, the weight thereof can be reduced. It should be noted that in the above-described embodiment, the document table sheet 15 is white on the document placement surface, but the document table sheet 15 may be any other color as long as it is opaque.

[0018]

As described above, in the image input apparatus of the present invention, the sheet on which the original is placed is detachably provided on the upper surface of the main body, and the sheet is placed on the original placing surface.
When the sheet is soiled, the sheet can be easily replaced, so that the original placement surface can be kept clean at all times. In addition, 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 the weight can be reduced and the overall thickness at the time of storage can be reduced. be able to.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a main body part with a part broken away.

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

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

[Explanation of symbols]

 2 Image Input Device 3 Main Body 4 Imaging Head 5 Main Arm 6,7 Illuminator 13 Sheet Placement Plate 15 Document Plate Sheet 34 Main Circuit Board 37 CCD 39 Document

Claims (2)

[Claims] 1. An image pickup head section having a built-in solid-state image pickup element for picking up an image of a document, and a support section which is provided on the main body section so as to be up and down and supports the image pickup head section above the main body section in a standing state. In the image input device, a sheet on which an original is placed is detachably provided on the upper surface of the main body. 2. The image input device according to claim 1, wherein the main body has a honeycomb structure.