JPS63124042A - Image reader - Google Patents

Abstract

PURPOSE:To improve the titled reader in strength by shortening a distance between a camera and a vertical supporting member, so that it can be operated easily, by providing the vertical supporting member of the camera on the placing table of an image to be read, so as to be oblique against the placing table. CONSTITUTION:A vertical supporting member 5 is provided obliquely on one corner of the placing table 2. Also, a horizontal supporting member 4 is provided on the vertical supporting member 5, and a camera 3 is attached to the member 4. Moreover, the up-and-down motion of the vertical supporting member 5, the expansion and contraction of the horizontal supporting member 4, and the turning of the camera 3 can be executed freely. In this state, an original 1 is placed on the placing table 2, brought to an image pickup and displayed on a monitor display part 6. Accordingly, since the vertical supporting member is provided obliquely, the reader can be strengthened in strength by supporting the horizontal supporting member of the camera, and also, even if a vertical original and a horizontal original are moved to the right and left, and forward and backward, it is hardly interfered with the vertical supporting member, and the operability can be improved.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an image reading device.

[Prior Art] As a conventional frog device, the one shown in FIG. 6 is known.

In the figure, l is the object to be read, e.g.
2 is a mounting table on which yAAl1 is placed.

Reference numeral 3 denotes a camera disposed above the mounting table 2 and facing the mounting table 2. The camera 3 is slidably supported by a horizontal support member 4 and can be slid in the direction of the arrow.

Reference numeral 5 denotes a vertical support member that is integrated with the horizontal support member 4, and a monitor display unit 6 that outputs the image captured by the camera 3 is mounted on the lower side of the vertical support member 5 on the side facing the mounting table 2. It is mounted with an upward slope, and its upper part is recessed to prevent light from outside from entering the display section 6 of the liquid crystal display television. In other words, by arranging the monitor display section 6 in this manner, the distance from the monitor display section 6 to the document 1 is maintained approximately the same from the user who is directly facing the mounting table 2, making it easier for the user to see and use the document. It's a good thing.

Reference numeral 7 designates a changeover switch for switching modes via a switch circuit, 8 a switch for M: and fl, and 9 a switch for white balance adjustment of the camera 3. In other words, the white balance is automatically adjusted by turning on the switch 9, but it also adjusts depending on the type of external light, for example, fluorescent lamps, daytime sunlight, or incandescent lamp light. It is also possible to adjust the white balance manually.

Conventionally, in this type of apparatus, the camera manual section and support member are disposed perpendicularly to a flat document. In this type of support method, the horizontal y I won't be able to do it. In order to display this part on the monitor, it was necessary to slide the vertical document back and forth, or to slide the camera manually back and forth.

(Problems to be Solved by the Invention) However, when a document is slid back and forth, it is necessary to prevent the leading edge of the document from interfering with the vertical support member, and the distance between the camera unit and the vertical support member becomes large. It also has the disadvantage of becoming weaker in terms of strength.
Moreover, sliding the camera section back and forth complicates the structure and increases costs.Furthermore, when the operator operates the mode switch, the operator's hand is reflected on the monitor, making it unsightly. However, there was a problem in that the monitor was sometimes difficult to see when viewed from the front.

The present invention has been made to solve these problems individually or all together, by shortening the distance between the camera inlet and the vertical support, increasing the strength, and To provide an image reading device which is easy to see and has good operability, without interfering with a vertical support part and without showing an operator's hand on a monitor even when the image reading device is slid in the left-right and front-back directions.

[Means for solving problems]

This invention attempts to achieve the above object by arranging the support means diagonally with respect to the leg removal means.

[Effect]

In this invention, since the support means is disposed diagonally with respect to the facial contouring means, the distance between the input section and the vertical support section can be reduced.
It is strong and does not interfere with the vertical support even when sliding vertical and horizontal originals in the left-right and front-back directions, and the operator's hands are not visible on the monitor, allowing for easy operation.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. Reference numerals 1 to 9 indicate the same/corresponding parts as those of the conventional device to avoid duplication of explanation. In the figure, a camera 3 is rotatably supported, can be rotated in the direction of the arrow, and converts an image of a document l on a mounting table 2 into an electrical signal. It has a built-in photoelectric conversion section (not shown). As shown in FIG. 2, a support member 4.5, which is a support means, is disposed obliquely to an input section of a camera incorporating a photoelectric conversion section, which is a reading means for reading the image.

In addition, the top surface of the mounting table 1 is kept achromatic white or gray, but if it were white, the amount of light received by the photoelectric conversion unit in the camera 3 would be too large and the output would become saturated. Since there is a risk that the white balance cannot be adjusted correctly, it is preferable to keep the white balance in a gray color with low reflectance and adjust the white balance. Alternatively, the white balance may be manually adjusted depending on whether the light is an incandescent lamp or not.

Reference numeral 10 denotes a knob that makes the horizontal support member 4 movable or fixed in the vertical direction together with the vertical support member 5. By rotating the knob 10, the knob 10 is attached to a vertical movement base 11 that holds the members 4 and 5 vertically. The stiffener can be fixed in a predetermined position by pressing the tip (not shown) of the stiffener. 1
2 is an external input terminal for inputting a video signal from the outside. The video signal input manually from the external input terminal 12 can be outputted to the monitor display section 6 as described later, and the video signal can also be taken out from the monitor terminal 13. Reference numeral 14 denotes an illumination lamp that illuminates the monitor display section 6.

Reference numeral 15 denotes a fixed base, to which the mounting base 2 and the monitor support 6 are fixed, while the camera 3 is attached to the fixed base 15 via the vertically movable base 11 together with the horizontal support member 4 and the vertical support member 5. Since the camera 3 is supported so as to be movable in the vertical direction, by moving the camera 3 in the vertical direction via the vertical movement table 11, the range of the photographing area on the a placement table 2 can be changed. Reference numeral 7 denotes a mode changeover switch, which will be described later, and is provided on the vertical support member 5.

Furthermore, the camera 3 can be rotated in the direction of the arrow in the vertical plane with respect to the horizontal support member 4 as shown in FIGS. By rotating the camera 3 in the direction of the blackboard 16, an image on the blackboard 16 can be captured.

21 is a power plug, 22 is an AC adapter, and the AC adapter 22 connects the camera 3. Since direct current DC is supplied to each part including the monitor display part 6, there is no need to provide a power supply for each part. 23 is a synthesizer capable of synthesizing images;
By turning on the mode selector switch 7, the external video signal manually input from the external input terminal 12 and the video output signal from the camera 3 are combined and output equally by the combiner IA 23, and By turning off the switch 7, only the video output signal from the camera 3 can be output.

24 is a distributor, 25 is a switch circuit, and in the switch circuit 25, when the mode selector switch 7 is turned "off", the external video signal inputted from the external input terminal 12 is cut off,
The supply to the distributor 24 is stopped. Further, in the distributor 24, when the mode selector switch 7 is in the "on" state and an external video signal is supplied from the external input terminal 12, the video signal is sent to the monitor display section 6 and the external monitor output terminal 13. distribute.

As shown in FIG. 2, 1 is a horizontal original, and 1' is a vertical original. Even if the horizontal original is shifted to the left or right with respect to the vertical support member 5, the original 1 does not interfere with the vertical support member 5. The length of the horizontal support member 4 can also be shortened since the horizontal support member 4 is arranged so as not to interfere even if the vertical original is shifted back and forth. In other words, even if the length of the horizontal support member is shortened, there is no problem when using the document because the document can be moved freely back and forth, left and right. In particular, in this type of device, it is desirable that the tip displacement of the horizontal support member 4 and the vertical support member 5 to which the camera is attached to the tip is small, and that it is small and lightweight and easy to transport when used for lectures, lectures, etc. It is something. When a load due to the weight of a camera, photoelectric conversion unit, etc. acts on the tip of the horizontal support member 4 as a cantilever, the tip displacement increases in proportion to the cube of the distance between the horizontal support member 4 and the vertical support member 5. Even from this fact, it can be seen that it is advantageous to be able to shorten the length of the horizontal support member 4. In addition, the moment due to the load acts on the tip of the vertical support member 5 that is the joint part with the horizontal support member 4, so that the vertical support member 5
The tip of the support member 4.5 will be displaced in proportion to the cube of the height, so in order to take into account the strength and suppress the displacement, the dimensions and weight of both support members 4.5 and 5 will increase as a whole. However, according to one embodiment of this invention, the length of the horizontal support member 4 can be shortened, thereby reducing space, reducing the amount of ffi, lowering costs, and providing a device with good performance.

As explained above, according to one embodiment of this invention, by arranging the horizontal support member 4 and the vertical support member 5 obliquely with respect to the input section of the camera 3, vertical and horizontal IIXM
Even if the vertical support member 5 is slid back and forth and left and right, it can be prevented from interfering with the vertical support member 5. Furthermore, since the distance between the camera 3 and the vertical support member 5 can be set short, sufficient strength of the horizontal support member 4 and the like can be ensured. In this embodiment, the vertical support part is arranged at the upper right corner as shown in FIG. That's fine, or anywhere else.

Furthermore, as shown in FIG. 3, by rotating the camera 3, an image of a blackboard 16 or the like can also be input. Furthermore, when touching the vertical support member, for example when adjusting the length of the vertical support member or operating the mode selector switch 7, the operator's hand can be operated without being displayed on the monitor, making it unsightly. In addition, the built-in monitor 6 is easy to see, and the space is small and the clutter is reduced.
It is possible to provide an image quality checking device that is low in cost, has good performance, and is easy to use and transport.

〔Effect of the invention〕

As described above, according to the present invention, by arranging the support means diagonally with respect to the reading means, the distance between the camera input section and the vertical support section can be shortened, which is advantageous in terms of strength. Even when a vertical document and a horizontal document are slid left, right, or backward, they do not interfere with the vertical support section, and the operator's hand does not appear on the monitor, making it easier to see and improve operability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the configuration of an image reading device to which an embodiment of the present invention can be applied, Fig. 2 is a plan view with the horizontal support section removed, and Fig. 3 is a view of the camera rotated. 4 is a plan view showing an example of the arrangement in use, FIG. 5 is a configuration diagram of the control circuit, and FIG. 6 is a perspective view showing a conventional device. 1-----Jj1g4 2------1 mounting table 3...--Camera 4--Horizontal support member 5...-Vertical support member In each figure, the same reference numerals are the same/equivalent Show parts.

Claims (1)

[Claims] It consists of a mounting table for an image to be read, a supporting means connected to the mounting table, and a reading means supported by the supporting means and reading the image on the mounting table, and the supporting means is connected to the reading means. An image reading device characterized in that it is arranged diagonally with respect to the image reading device.