JP3899351B2 - Document camera integrated projection device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document camera-integrated projection apparatus having a function of capturing and projecting a document original as a subject in addition to a function of inputting and projecting a video image signal or a screen signal of a personal computer from the outside. .

Instead of a conventional OHP (overhead projector) that transmits light through a transparent film on which a document to be displayed is drawn and projects the light, a transparent plate such as glass is recently disclosed in Patent Document 1 In general, a catalog, a book, or the like is placed with the document surface facing downward, and an image signal obtained by imaging with a camera from below is projected by a liquid crystal projector.

Such a conventional document camera-integrated projection apparatus will be described with reference to FIG. FIG. 8 is described in Patent Document 2. An opening provided in a frame 52 that forms the upper surface of the apparatus main body 51 is covered with a glass plate 54 that is a transparent plate, and a document or the like is covered on the glass plate 54. The projecting object 55 is placed with its surface to be projected facing down, irradiated with light from a light source 56 provided below the glass plate 54, and the image is taken by a camera 57.

At that time, the projection object 55 is fixed so as not to be displaced, and the light from the light source 56 that has passed through the projection object 55 and the light source 56 that has passed through the portion of the glass plate 54 that is not covered by the projection object 55. The document cover 58 covers the projection object 55 and the glass plate 54 in order to prevent the light from leaking out to the surroundings or from the outside light entering the camera 57.

FIG. 9 is an external view of such a document camera-integrated projection apparatus, and the same components as those in FIG. 8 are denoted by the same reference numerals. Here, the document cover 58 provided on the frame 52 of the main body 51 is drawn in a closed state. A projection lens 59 is provided on one side of the main body 51, and an operation panel 60 is provided on the frame 52.

Furthermore, an input / output panel 61 is provided on the other side surface of the main body 51, to which a video image signal or a screen signal cable of a personal computer is connected, and an external signal can be projected from the projection lens 59. ing.

When using a document camera-integrated projection apparatus having these configurations, it is common to operate the state of image light during projection so that the projected image is easy to see. For example, if the projection target is an ornamental video image, it is rare to change the initial projection setting during projection. However, when a presentation is made using a document document, the video light is frequently used during projection. It is assumed that the state of this is changed.

For example, while projecting a single document, zoom and vertical / horizontal scrolling are used, and when projecting multiple document originals, vertical and horizontal rotation and brightness adjustment are generally performed in addition to the zoom and scroll. Is. Further, during the presentation, the projection of the document original and other external signals may be switched.

Japanese Patent Laid-Open No. 7-36116 (2nd page, FIG. 1 and FIG. 2) JP-A-8-314008 (2nd page, FIG. 5)

These operations are performed by operating an operation panel 60 or a remote controller 62 provided on the main body 51 as shown in FIG. However, the document camera-integrated projection device is not an exception to the user's request for lightness, thinness and miniaturization. The size of the operation panel 60 is also limited. Also, the size of the remote controller 62 is limited due to the requirement of being able to fit in one hand and be carried freely.

For this reason, in addition to the fact that it is difficult to sufficiently increase the area of the entire operation panel,
The number of operation items has increased as the control functions of projected images have been diversified due to recent technological advances. However, when document camera-integrated projection devices are widely accepted in the market, it is necessary to assume that elderly people and young people will operate, and it is difficult to operate an operator with reduced visual acuity and fine fingertips. There has been a demand for an operation panel that is easy for operators to handle.

The present invention has been created to solve the above-described problems. An operation panel having excellent visibility and operability is provided for a document camera-integrated projection apparatus without increasing the outer shape of the apparatus body. The purpose is to supply.

As a first aspect of the present invention, a document document camera-integrated projection device that images a document document on a transparent plate with the document surface facing downward and images the image from below by a camera and projects image data obtained by the imaging. A projection unit that modulates illumination light from a light source and emits image light from a projection lens, a document imaging unit that includes the transparent plate and the camera as a component, and an upper part of the transparent plate A document cover provided so as to be freely opened and closed; and an operation panel for operating at least the state of the image light. The operation panel is provided on the document cover, and the document cover includes the document camera integrated projection device. Is openable and detachable with respect to the main body.
Provided is a document camera-integrated projection apparatus characterized in that infrared light emitting means for transmitting a control signal output from the operation panel to the main body is provided on at least a pair of diagonals of the document cover .

Further, according to a second aspect of the present invention, the document cover has a hinge for opening and closing, and one end of at least one of the hinges has an electrical contact terminal. providing document camera-integrated projection apparatus according the first aspect, wherein a and rechargeable battery is an operation panel driving power supply provided to the document cover is connected.

According to the first aspect of the present invention, since most of the area of the upper surface of the document cover can be used as the operation panel, the area of each switch can be increased as compared with the conventional operation panel. Therefore, the display indicating the function of each switch can be enlarged, and even an operator who is poor in visual acuity or who is not good at fine work by the hand can easily recognize and operate.

Also, when projecting, it is common to darken the ambient light to make the projected image clearer, but in this case as well, the operation panel is composed of a large switch and a large display as described above, so that it is easy to recognize. It is also effective for operators with good vision in dimly lit environments.

And or originals cover and body to be separated, yet since the can communicate wirelessly, even when using this as a remote controller, to facilitate recognition and operation of the switch of the display.

Hinge becomes originals cover integrally to further separate from the body, since functions of the legs of the document cover, without touching the mounting surface is the lower surface even when placed on the post-separation table top or the like, It is possible to prevent scratching and adhesion of the lower surface, which is the document pressing surface, and in addition, according to the second aspect of the present invention, it is not necessary to replace the battery until the lifetime of the rechargeable battery is exhausted. Can be omitted.

Further, when the operation panel is provided on the document cover in this way, the upper surface of the document camera-integrated projection apparatus main body only needs to have an area for placing a document, and thus the entire apparatus can be reduced in size. It becomes.

Next, an embodiment of a document camera-integrated projection apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a document camera integrated projection apparatus according to the present invention. In FIG. 1, 1 is a document camera-integrated projection apparatus, 2 is an apparatus body, 3 is a projection lens, 4 is a document cover, 5 is an operation panel, and 6 is an input / output panel. FIG. 1A shows a state in which the document cover is closed, and FIG.
Indicates that the document cover is open.

Here, the usage method of this apparatus is demonstrated. First, a power switch (not shown) provided in the apparatus main body 2 is turned on to turn on the power supply of the entire apparatus. Thereby, the document image capturing unit, the image processing unit,
The input / output unit, the control unit, and the like are started up, and the light source lamp is turned on also in the projection unit, and the preparation for projection is completed. Next, the handle 20 shown in FIG. 1A is lifted to open the document cover 4 from the apparatus main body 2 as shown in FIG.

The document cover 4 is provided with a pair of hinges 21A and 21B. One of the hinges 21A and 21B is fixed to the document cover 4 with the rotating parts interposed therebetween, and the other is inserted into the recesses 22A and 22B provided in the apparatus main body. Has been. In addition, this hinge uses elasticity and friction to maintain a stationary state without closing the document cover 4 in the open position even when the supporting hand is opened.

Next, a document document (not shown) is placed on the glass transparent plate 9 with the document surface facing downward.
A document illumination (not shown) and a camera (not shown) are provided below the transparent plate, and a predetermined illumination light is irradiated to the downward document surface by the document illumination, and the camera images the image.

Image data obtained by this imaging is sent to an image processing circuit, and projection light modulated based on this data is emitted from the projection lens 3. In addition to projecting a document image in this way, an external video signal or analog RG is input to the input / output panel 6 provided on the side surface of the apparatus body 2.
By inputting the B signal, it is possible to project a video image or a personal computer screen image.

Of course, when projecting an external input signal such as a video image, the document cover 4 is normally projected with the document cover 4 closed on the apparatus body 2 side when projecting a document image. An operation panel 5 is provided on the upper surface of the closed document cover 4 as shown in FIG.

The operation panel 5 can be provided in a size that occupies most of the upper surface of the document cover 4 as shown in FIG. In the case of this embodiment, the outer dimension of the upper surface of the document cover 4 is 280 mm in length and 3 in width.
Whereas it is 20 mm, the outer dimensions of the operation panel 5 are 160 mm in length and 200 mm in width.

The operation panel 4 is configured with the contents shown in FIG. 3, for example. Each switch is a flat sheet type push button type, input switching 10, vertical / horizontal scroll 11, zoom 1
2. Vertical / horizontal rotation 13, brightness adjustment 14, and document image memory operation 15 are provided.

Each switch is formed to a size that will respond if it is pressed in the range of about □ 25 mm, and the entire surface of the operation panel 5 is covered with a single sheet to enhance the dust and drip proof performance. ing. In addition, the sheet may be embossed so that the position corresponding to each switch has a gently protruding shape.

Next, the configuration from operation to operation will be described. As shown in FIG. 4, when the operator operates the operation panel 5, the control unit 16 receives this information and drives the pair of infrared light emitting units 7A and 7B based on this information. The signal thus generated is received by a pair of infrared light receiving portions 8A and 8B provided in the apparatus main body 2, and based on this, the control portion 17 is in a state of image light to be projected, that is, as described above with reference to FIG. Control important matters.

At this time, as shown in FIG. 1A, the pair of infrared light emitting units 7A and 7B correspond to the pair of infrared light receiving units 8A and 8B, respectively, and communicate the same signals in parallel.
Further, in this embodiment, the infrared light receiving / emitting unit is provided at one set of diagonals, but this may be provided at another set of diagonals, or provided at two sets of diagonals for four systems of parallel communication. You may make it perform.

Next, the attachment structure of the document cover 4 will be described with reference to FIG. As described above, the pair of hinges 21A and 21B are inserted into the pair of recesses 22A and 22B provided in the apparatus main body 2 so as to be freely inserted and extracted, and separated from the apparatus main body 2 by lifting the document cover 4 upward. can do.

However, at the time of separation, a predetermined resistance (click feeling) is generated to prevent unintended separation. In this embodiment, a pair of hinges are used, but a larger number of hinges may be used, or a wide single hinge may be used.

The document cover 4 separated from the apparatus main body 2 in this way is the apparatus main body 2 as shown in FIG.
It can be used as a remote controller. At this time, since the infrared light emitting units 7A and 7B in the document cover 4 and the infrared light receiving units 8A and 8B in the apparatus main body 2 are also provided at the corners, the document cover 4 can be located in any direction around the apparatus main body 2. Even communication is possible. For example, when the document cover 4 is arranged at the position indicated by the solid line in FIG.
The infrared ray receiving unit 8A of the apparatus main body 2 receives the light emitted from the infrared ray issuing unit 7B.

Further, as shown in the side view of FIG. 7, the document cover 4 has a cushion layer 23 and a sheet 24 overlapped on the lower surface which is a document pressing surface. This cushion layer is disposed to absorb a slight unevenness caused by a crease or the like of the document and uniformly hold the document. Further, the sheet 24 is a smooth surface and has a white surface since it does not affect the image of the document to be imaged as much as possible. Therefore, when the document cover 4 is used separately from the apparatus main body, it is desirable to avoid the occurrence of scratches on the surface of the sheet 24 and the adhesion of dirt as much as possible.

Therefore, as shown in FIG. 7, the projections of the hinges 21A and 21B fixed to the document cover 4 come into contact with the placement surface 25, and the surface of the sheet 24 is separated from the placement surface 25, so that scratches and dirt can be generated. Adhesion can be reduced. Furthermore, by using a material having a high coefficient of friction such as an elastomer for the tip surface of the protrusions of the hinges 21A and 21B, a higher function as a leg portion is provided.

The driving power source of the operation panel 4 is preferably a battery, but in order to make it more suitable, in the present embodiment, the battery is a rechargeable battery, and at least one of the hinges 21A and 21B is electrically contacted. Since this is connected to the power source of the apparatus main body 2 while it is inserted into the recesses 22A and 22B of the apparatus main body 2, it is possible to supply power from the apparatus main body 2 to the rechargeable battery. .

The operation panel 5 provided on the document cover 4 has been described in detail above.
Needless to say, the conventional operation panel or the conventional remote controller is not exclusive, and can be coexisted as a single device, depending on the choice of the operator during operation.

The perspective view which shows one Embodiment of this invention The top view which shows one Embodiment of this invention The top view which shows one Embodiment of this invention The block diagram which shows one Embodiment of this invention The perspective view which shows one Embodiment of this invention The perspective view which shows one Embodiment of this invention The side view which shows one Embodiment of this invention Schematic diagram showing conventional technology Perspective view showing conventional technology

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Document camera integrated projection apparatus 2 Apparatus main body 3 Projection lens 4 Document cover 5 Operation panel 6 Input / output panel 7A, 7B Infrared light emission part 8A, 8B Infrared light reception part 9 Transparent board 16, 17 Control part 21A, 21B Hinge 22A, 22B Recess 23 Cushion layer 24 Seat 25 Mounting surface

Claims (2)

A document camera-integrated projection device that places a document document on a transparent plate with the document surface facing downward, images the image from below with a camera, and projects image data obtained by the imaging,
A projection unit that modulates illumination light from a light source and emits image light from a projection lens;
A document imaging unit having the transparent plate and the camera as a part of components;
A document cover provided to be openable and closable above the transparent plate;
An operation panel for operating at least the state of the image light,
The operation panel is provided on the document cover, and the document cover can be opened and closed with respect to the main body of the document camera-integrated projection apparatus, and is detachable.
A document camera-integrated projection apparatus, characterized in that infrared light emitting means for transmitting a control signal output from the operation panel to the main body is provided on at least a pair of diagonals of the document cover . The document cover has a hinge for opening and closing, and at least one end of the hinge has an electrical contact terminal,
2. The document camera-integrated projection apparatus according to claim 1 , wherein the contact terminal connects a power source of the main body to a rechargeable battery that is a power source for driving an operation panel provided on the document cover.

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