JPH0535653Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image input device, and more specifically, to an image input device that captures an image of a document and sends out a video signal.

[Conventional technology]

2. Description of the Related Art Image input devices are provided that capture an image of a document with a video camera and send the resulting video signal to a CRT monitor or video deck. Among such image input devices, as shown in FIG. 4, a first example of such an image input device includes a cover 33 that is attached to a main body base 31 having a document placement surface 32 so as to be openable and closable. A fluorescent lamp 34 fixed to the cover 33 illuminates the document 35 placed on the document placement surface 32 . The image of the document 35 illuminated in this way is projected onto the main body base 31 by a mirror 36 attached to the cover 33.
The structure is such that the light is reflected toward a video camera 37 installed inside the camera.

In addition, a post with a video camera attached was installed at the base of the main body, and an image input device was installed that illuminated the document with a lighting lamp attached to the base of the main body to take an image. An image input device is also known in which an illumination lamp is rotatably attached to both sides of a column and images are taken.

[Problem that the invention attempts to solve]

However, in the image input device 30 as in the first example, since the video camera 37 is built into the main body base 31, it is difficult to make the main body base 31 thinner, which poses an obstacle to making the entire device more compact. There is. Furthermore, since the fluorescent lamp 34 is fixed to the cover 33 of a limited size, for example, when capturing an image of a glossy color print or the like as the original 35,
As shown in the optical path 40 in FIG. 4, the light from the fluorescent lamp 34 is reflected by the original 35 and the mirror 36 and is directly incident on the video camera 37, which has the disadvantage that flare is likely to occur and the image contrast is likely to decrease. be.

Furthermore, with a support and a light provided at the base of the main unit, it is not possible to store the video camera, light, etc. in a compact manner when storing or carrying when not in use, and the support is mounted on both sides of the support. Those equipped with illuminating lights had the disadvantage that the illuminating lights could not be accommodated within the outline of the base of the main body when folded.

[Purpose of invention]

This invention was developed to solve the above-mentioned problems, and it can be folded compactly within the contour of the base of the main body when not in use.
It is an object of the present invention to provide an image input device equipped with an illumination means capable of illuminating a document placed on a document placement surface without causing uneven illumination during use.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a head support member with an imaging head attached to the top thereof, which can be freely raised and lowered at the base of the main body provided with a document placement surface, and which illuminates the document placement surface during use. An illumination light is set diagonally above and to the side of the document placement surface, and an illumination light support member is provided on the base of the main body so that the illumination light can be folded up and down along the document placement surface when not in use. It is something.

In addition to the above configuration, by setting the illumination lamp outside the document placement surface, the light from the illumination lamp is prevented from reflecting off the document surface and directly entering the photographing head, and furthermore, the arm and It is advantageous to provide a pair of illumination lights on each side of the head support member to provide uniform illumination.

In addition to the above configuration, the head support member is laid down along the document placement surface, and then the illumination light support members are rotated so as to cover the upper part of the head support member. Since the lamps are laid down at positions sandwiching the head support member between them, the lamps can be quickly set by a simple operation of raising each lamp support member.

[Action]

According to the above configuration, when in use, the illumination light support member is rotated to set the illumination light diagonally above and to the side of the document placement surface, and the head support member is erected to place the document on the document placement surface. . If you set the illumination light diagonally above and to the side of the document placement surface in this way,
Since direct reflected light from the document surface and direct light from the illumination lamp do not enter the imaging head, it is possible to clearly image the document and send out a video signal. Further, when not in use, by laying down the head support member and rotating the illumination light support member, the illumination light can be folded compactly along the document placement surface.

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

〔Example〕

In FIG. 1 showing the usage state of the image input device 1 of the present invention, the image input device 1 is roughly divided into a main body base 2 forming the bottom of the image input device 1, and a main body base 2 that is rotatably provided. A pair of support columns 4, a head portion 3 rotatably attached to the free end side of the support column 4, and a pair of grooves 2a formed on both sides of the main body base 2 for rotation. It is composed of an arm 6 and a pair of illumination lights 5 supported at the ends of the arm 6.

A smooth stage 10 for placing a document 9 is provided on the upper surface of the main body base 2, and an operation panel 11 is formed at the rear end. The operation panel 11 is provided with a main switch 24, a video switch 25 for sending out a video signal from the head section 3, a lighting switch 26 for the illumination lamp 5, and the like. In addition, on the side of the main body base 2,
An outlet 13 for taking in AC power and a connector 14 for sending out a video signal are attached. Note that a circuit unit and the like for driving the head section 3 are built in below the operation panel 11.

A box-shaped cover 7a is integrally fixed to the back side of the support column 4, and this cover 7a can be folded together with the support column 4 about the shaft 12 toward the main body base 2 side. Further, the shaft 12 is provided with a mechanism (not shown) for locking the cover 7a and the support column 4 in a predetermined position when they are raised.

The head section 3 consists of an imaging section 15 equipped with a well-known CCD solid-state imaging device inside, and a zoom lens 16 attached to the tip of the imaging section 15, converts the captured image into a video signal, and converts the captured image into a video signal. 4
The data is sent to an external CRT monitor or video floppy recorder via a cable and connector 14 provided inside.

The arm 6 is bent into an L-shape as shown in the figure, and is made of a pipe-like member having a flexible portion 6a in part, and one of its ends is connected to a pair of grooves formed on both sides of the main body base 2. 2a, respectively, so as to be rotatable. Furthermore, an illumination lamp 5 is attached to the other end via a connecting member 17.
The illumination light 5 consists of a modified elliptical base 5b and a cylindrical umbrella 5a that is rotatably attached to the base 5b and is open at the bottom. A fluorescent lamp 8 is attached.

Note that decorative lids 18 are attached to each of the grooves 2a via hinges 19 (see FIG. 3). This hinge 19 is loaded with a spring, and when the arm 6 is stored, the groove 2a is inserted into the decorative lid 18.
covered from the sides by

FIG. 2 shows the above-described image input device 1 in a stored state. Inside the image input device 1, the head unit 3 is housed with the zoom lens 16 inserted between the support 4, and the illumination lamp 5 is moved between the support 4 and the cover 7a by rotation of the arm 6. It is stored between the side wall. A cover 7b is provided above the head portion 3 to cover it. This cover 7b is mounted by being engaged with grooves provided at the four corners of the stage 10. Note that there is a handle 7 at the rear of the cover 7a for easy carrying.
c is attached.

To use the image input device 1 configured as described above, first remove the cover 7b from the state shown in FIG. 6
Rotate until it touches the hinge 19. next,
Hold the top of the pillar 4 and lift it up. As a result, the support column 4 and the cover 7a are rotated about the shaft 12, erected to a predetermined angle, and locked.
Furthermore, by rotating the head section 3, the zoom lens 1
6 is placed directly facing the stage 10, the image input device 1 is set to the state shown in FIG. Note that, at the same time, the decorative lid 18 is opened so as to be pushed down by the arm 6.

Once the image input device 1 is set in this way,
When the plug of the power cord and the connector on the CRT monitor side are connected to the outlet 13 and connector 14, respectively, and the main switch 24 is turned on, the head section 3 begins to operate. Next, stage 10
The document 9 is placed on the holder, the lighting switch 26 is turned on to light up the illumination lamp 5, and the video switch 25 is turned on to send a video signal to the CRT monitor. By operating the zoom lens 16 while observing the image displayed on the CRT monitor, focusing, determining the photographing magnification, and adjusting the brightness of the image, the video image of the document 9 is clearly displayed on the CRT monitor.

In FIG. 3, when the image input device 1 of the present invention is viewed from the front, the two-dot chain line indicates the stored state, the solid line indicates the set state, and the two-dot chain line of the right arm 6 indicates the angle of the flexible portion 6a. One adjusted state is shown. The angle adjustment of the flexible portion 6a is performed depending on the form of the document. For example, if the document is thin and flat, there is no need to adjust the angle of the flexible portion 6a. In this case, the illumination light directed toward the stage 10 from the illumination lamp 5 shown by the solid line uniformly illuminates the stage 10 and the surface of the document, and is reflected as shown in the figure. Since this reflected light and the direct light from the illumination lamp 5 are not directly incident on the zoom lens 16, flare and ghosts do not occur, and a clear image without unevenness can be captured.

Furthermore, if the document is three-dimensional, the angle of the flexible portion 6a may be adjusted while observing the monitor to prevent light reflected from the surface of the document from entering the zoom lens 16. Clear images can be obtained.

Next, in order to store the image input device 1 of the present invention, first rotate the head section 3 and open the zoom lens 1.
6 is inserted between the pillars 4, the locking mechanism built in the shaft 12 is released from the locked state, and the pillars 4 are laid down. When the support column 4 is lowered, the operation panel 11 is covered by the cover 7a as shown in FIG. Next, if the flexible portion 6a has been operated, return it to its original position, and then fold the arm 6 in the same way as when folding an eyeglass frame. It will be stored. At this time, the decorative lid 18 is pulled back by a spring attached to the hinge 19 to cover the opening of the groove 2a.

Furthermore, one opening end of the cover 7b is brought into contact with the cover 7a, and the other opening is opened on the stage 1.
Cover 7b
Four protrusions (not shown) provided on the stage 10 are engaged with grooves provided on the four corners of the stage 10, and the cover 7b is attached to the main body base 2. In this way, the image input device 1 of the present invention is housed in a thin attaché case, and can be stored anywhere.
Alternatively, the handle 7c makes it easy to carry.

According to the image input device 1 of the present invention, the head portion 3 is positioned so that the zoom lens 16 directly faces the wall surface.
By rotating, even a large-sized original that cannot be placed on the stage 10 can be attached to a wall or the like and easily converted into a video signal.

[Effect of idea]

As explained above, according to the image input device of the present invention, the head support member with the imaging head attached to the top is provided in a freely undulating manner at the base of the main body provided with the document placement surface, and when in use, the head support member An illumination light for illuminating the document placement surface is set diagonally above and to the side of the document placement surface, and an illumination light support member that folds the illumination light along the document placement surface when not in use is undulated at the base of the main body. I tried to set it up freely. Therefore, when in use, it is possible to provide illumination light to the original placed on the document placement surface without causing uneven illumination, and when not in use, the illumination lamp can be folded compactly and stored within the outline of the base of the main body. It becomes possible to provide an image input device.

In addition to the above configuration, by setting the illumination lamp outside the document placement surface, it is possible to prevent the light from the illumination lamp from reflecting on the document surface and directly entering the photographing head. This makes it possible to obtain images with good contrast.

Further, in addition to the above configuration, by providing a pair of arms and illumination lights on the left and right sides of the head support member, more uniform illumination of the document can be achieved.

In addition to the above configuration, the head support member is laid down along the document placement surface, and then the illumination light support members are rotated so as to cover the upper part of the head support member. Since the lamps are laid down at positions sandwiching the head support member between them, the lamps can be quickly set using a simple device of raising each lamp support member.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention in use. FIG. 2 is a perspective view showing an embodiment of the present invention in a stored state. FIG. 3 is a schematic front view showing the embodiment of the present invention from the stored state to the set state, and also shows the irradiation state of illumination light. FIG. 4 is a schematic sectional view showing the state of use of the first conventional example. 1... Image input device, 2... Body base, 3...
Head part, 4... Support, 5... Lighting lamp, 6... Arm, 10... Stage.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A main body base with a document placement surface, an imaging head that takes an image of the original and sends out a video signal, and an undulating head support that supports the imaging head above the main body base. a member, an illumination lamp for illuminating the original set on the original document placement surface, and an illumination lamp that is attached to the base of the main body so as to be able to rise and fall freely, and in the upright position, supports the illumination light diagonally above and to the side of the document placement surface. The image input device further comprises an illumination lamp support member that folds the illumination lamp along the document placement surface in the collapsed position. 2. The illumination light support member is characterized in that the illumination light is set outside the document placement surface so that the illumination light from the illumination light does not directly reflect on the document placement surface and enter the imaging head. An image input device according to claim 1 of the utility model registration claim. 3. The image input device according to claim 2, wherein the illuminating lamp and the illuminating lamp supporting member are provided on the left and right sides of the main body base, respectively. 4. In the image input device according to claim 3 of the utility model registration, after the head support member is laid down along the document placement surface, the illumination light support member is arranged to cover the upper part of the head support member. The image input device is characterized in that the illumination lamps are brought down to positions sandwiching the head support member between them by rotating the illumination lamps respectively.