JPH0522928Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an actual projector used to project an enlarged image of a manuscript onto a screen, and in particular, the invention relates to an actual projector used to project an enlarged image of a manuscript onto a screen, and in particular, without moving the manuscript itself. The present invention relates to an apparatus configured to be able to project an image on a document at any location by moving the document table.

(Prior Art) Conventionally, at seminars, product presentations, etc., the easiest way to project an image of a manuscript onto a screen and give an explanation is to use a slide device,
OHP (overhead projector) devices are used, but in the case of such devices,
It is necessary to form an image on a special film.

On the other hand, a physical projector that can directly project an image of an original onto a screen has the ability to directly project an image of any original onto the screen, and can reproduce not only the original but also the actual object on the screen. Since then, it has been used very conveniently.

As this actual projector, a device having a configuration as shown in FIG. 8 has conventionally been used. In the actual projector 1 shown in FIG. 8, a mirror 11 is provided inside the main body 10 with the mirror 11 tilted at approximately 45 degrees, and both sides of the mirror 11 are many lamps 1
2... are arranged, and a lens 13 is further provided in the front portion of the main body 10, so as to project image light.

Then, light from the lamp 12 is applied to the document set on the glass stage 26 provided on the top surface of the main body 10 and pressed by the document cover 30, and the reflected light of the image of the document is reflected by the lens 13.
It is configured so that it can be enlarged and projected onto a screen through the projector.

In addition, in the conventional physical projector, the glass stage 26 provided at the top of the main body 10 is formed to fit an A4 size document, and is optimal for the A4 size document. The lamps are placed so that they can illuminate the area.

Then, the document is positioned in correspondence with the glass stage 26, and with the document cover 30 pressed against the document, the lamp is turned on to project the image of the document onto the screen. There is.

(Problem to be solved by the invention) However, in the conventional physical projector as described above, the original is set in correspondence with the glass stage, and the lamp is turned on to illuminate the image surface of the original. Since the image is projected onto a screen, if it is necessary to move the image plane of the original, open the original cover, move the original, and then project it onto the screen again to change the position of the image. It is necessary to confirm the following.

This type of operation requires centering the image if the document size is larger than A4 size, and once the image surface is projected on the screen,
It is necessary to perform complicated operations such as confirming the position of the image. Therefore, there are problems in that the above-described image positioning increases the burden on the operator and reduces the efficiency of projection.

This work could be done by adjusting the position of the image relative to the glass stage with the lamp on, but the actual projector uses a very bright lamp of 1KW or more. Looking directly at the light from the lamp has a great effect on the eyes, and furthermore, in a dimly lit room, light leaking from the actual projector may spoil the atmosphere of the room.

Furthermore, when exchanging originals to a physical projector, it is necessary to repeat the above-mentioned operations, which requires a lot of effort to operate the device, which currently requires improvement. be.

(Purpose of the invention) The present invention is intended to eliminate the drawbacks of the conventionally used devices as described above. It is an object of the present invention to provide an apparatus which is configured to be able to perform projection as desired, and which can alternately project two originals in the case of small-sized originals.

(Means and effects for solving the problem) This invention forms a part on the top of the main body to place the original, illuminates the original with a lamp installed inside the main body, and reflects the light of the image with a mirror. The present invention relates to an actual projector configured to form an image through a lens and perform projection.

The present invention includes an intermediate slide member that is slidable in the front-rear direction with respect to the main body, and an original document mounting table that is slidable in the left-right direction of the main body with respect to the intermediate slide member, on the upper part of the main body. The document is placed on the top surface of the table and covered by the document cover, and the opening of the intermediate slide member is formed longer in the front and back direction relative to the opening on the top surface of the main body. On the other hand, this is a device in which the glass stage of the document mounting table is formed wide.

Therefore, in the actual projector of the present invention,
After setting the original on the original placing table, the image position of the original can be moved without opening the original cover, and the burden on the operator can be reduced. In addition, in the explanation of this invention, the front-back direction and the left-right direction are
When the lens portion of the device is viewed from the rear side, the axial direction of the lens is referred to as the front-rear direction, and the direction perpendicular thereto is referred to as the left-right direction.

In addition, in the case of small-sized originals, the physical projector of the present invention can replace the other original while the image surface of one original is being irradiated. This makes it possible to improve the efficiency of projection.

(Example) The configuration of the actual projector of the present invention will be explained according to the illustrated example.

As shown in FIG. 1, the physical projector 1 of the present invention includes a main body 10 having an opening 15 formed in the upper part;
An intermediate slide member 20 that is slidable in the front-rear direction on the upper part of the main body 10, an original document mounting table 25 that is slidable in the left-right direction on the upper part of the intermediate slide member 20, and a hinge on the upper part of the original document mounting table 25. and a document cover 30 which is provided so as to be openable and closable via the document cover 30.

Inside the main body 10, a mirror 11 and a lamp are provided, as in the case of conventionally used devices.The lamp illuminates the document, and the mirror 11 directs the image light toward the lens 13. The light is reflected and focused by the lens 13 to form an image on a screen (not shown).

Each member constituting the actual projector of the present invention is
As seen in the exploded perspective view of the figure, an opening 15 is provided in the upper cover of the main body 10, and a pair of guide rails 16, 16a are provided on both sides of the opening 15.
are placed.

Intermediate slide member 20 located at the top of the main body
is provided with sliding members 22, 22a guided by the guide rails 16, 16a on the lower surface, and
Guide rails 23 and 23a are provided on the top surface and are arranged at right angles to the sliding member 22.

Furthermore, the opening 21 formed in the center of the intermediate slide member 20 is smaller than the opening 15 of the main body.
Although the width direction is the same, the longitudinal direction is formed with sufficient margin, so that even when the intermediate slide member 20 is moved in the front and back direction with respect to the main body, the opening 21 It is provided in such a manner that it can sufficiently cover the image surface of the document on which it is positioned.

Further, the document mounting table 25 located on the upper surface of the intermediate slide member 20 is provided with sliding members 27, 27a on its lower surface to be guided by the guide rail 23 of the intermediate slide member.
By guiding the document placing table 25 along the line 3, the document placing table 25 can move in the left-right direction with respect to the main body 10.

Further, a large-sized glass stage 26 is provided at the center of the document mounting table 25. This glass stage 26 is made of transparent glass, and is designed to set an original on the glass stage 26. The original is placed on the glass stage and is pressed by the original covers 30, 30a. By doing this, the image surface of the original is projected.

The document cover provided at the top of the device is divided into two parts, and can be opened and closed by handles 31 and 31a provided on each cover 30 and 30a. . Further, the document covers 30 and 30a are attached to a cover holding member 33 fixed to the document table 25.
They are supported via hinges (not shown), and each is provided so that it can be opened and closed independently with respect to the document mounting table 25. Both document covers are connected together using a locking mechanism 35 as shown in FIG. 4, so that the two document covers can be opened and closed simultaneously with respect to the document table.

The locking mechanism 35 shown in FIG. 4 is an example of a fixing member for a document cover, and a locking bar 36 is slidable against a guide 37 provided at the top of one document cover 30. A locking portion 38 is provided on the other document cover 30a, and the locking bar 36 locks both document covers 30,
By fixing 30a, the document cover 3
0 and 30a can be opened and closed at the same time.

When the locking mechanism is removed, each document cover can be opened and closed independently, and while the image of the document set at the bottom of the document cover 30 is being irradiated, the other document cover 30a can be opened. It is also possible to perform operations to prepare the next manuscript.

The guide rail and sliding member shown in FIG. 3 are an example of a mechanism for guiding the movement of each member of the present invention. 20, a sliding member 22 provided on the lower surface of the intermediate slide member 20 is adapted to be engaged with a guide rail 16 provided on the upper surface of the main body 10.

Then, the sliding member 22 is connected to the guide rail 16
By sliding in the longitudinal direction, the intermediate slide member 20 is moved in the front-rear direction relative to the main body. By providing a similar mechanism between the intermediate slide member 20 and the document table 25, the document table 25 can be moved in the left-right direction with respect to the intermediate slide member 20.

Furthermore, the device of the present invention is not limited to the use of the sliding member of the mechanism shown in the drawings, but can also use a sliding guide member of any other mechanism.

In order to position the movable member at the top of the main body of the present invention, as shown in FIG. Marks 40, 40a, 40b are provided. This mark is also used to predict the center of the original when a small-sized original is set corresponding to each of the original covers 30 and 30a. can be done arbitrarily.

Furthermore, the device of the present invention detects the opening/closing state of the document cover and the moving position of the document table, and automatically controls the lighting of the lamps as shown in FIGS. 6 and 6a. Switches 42 to 45 are provided so that the As the above-mentioned switch, for example, a micro switch can be used, and the arm of the micro switch is swung by each actuating member to perform detection. A switch mechanism can be used.

Among these switches, switches 42 and 43
are operated by the protrusions 28, 28a provided on the document table 25, and are operated by the switches 44, 4.
5 are provided to be operated by document covers 30 and 30a, respectively.

The switches are combined to form a lighting circuit between the power source 41 and the lamp 12 as shown in FIG. 7, and when any of the switch combinations is connected in series, the lamp 12 is turned on. so that the image of the original can be projected.

Therefore, in the device of the present invention, when the switches 44 and 45 are closed at the same time, the document table 25 is moved to the right end, the switch 42 is activated by the protrusion 28a, and one document cover 30a is opened. When the original platen 25 is in the closed state and the original platen 25 is moved to the left end, the protrusion 28
When the switch 43 is actuated and the document cover 30 is closed, the lamp lighting circuit is connected in the above three cases, and the actual projector can perform the projection operation.

To further explain the operation of projecting an image of a document in the actual projector of the present invention, in the case of a large-sized document, the document covers 30 and 30a are opened together, and the screen is placed on the glass stage 26 of the document table 25. When the document is placed on the screen and the document cover is closed, the lamp is turned on and the image of the document is projected onto the screen.

In this state, move the intermediate slide member 20 of the screen in the front and rear directions, and move the original platen in the left and right directions, and move the projection screen while looking at the screen, thereby setting the desired image screen. can be placed in the center of the screen.

Furthermore, during the projection of the screen, other parts of the original can be easily moved to the center by mutual movement between the intermediate slide member and the original table as described above. becomes.

In addition, in the case of a small-sized document, open one document cover, set the document toward the right end of the glass stage 26, and place the mark 40b that specifies the center of the document on the intermediate slide member. When it is moved to a position aligned with the mark 40, the lighting circuit of the lamp is connected by this operation, so that the image of the original on the lower surface of the original cover 30 is projected.

Then, while the image of the original is being projected on the screen, open the other original cover 30a,
By preparing the next document and performing these operations alternately, it is possible to continuously project images on the screen.

Therefore, in the actual projector of the present invention,
Even if the opening at the top of the main unit is relatively narrow,
Or, even if the size of the manuscript is large,
As long as the vertical and horizontal directions are within the range covered by the opening of the intermediate slide member and the glass stage of the document mounting table, you can adjust the position of the image even while it is being projected onto the screen while looking at the screen. can be moved arbitrarily.

In the above-described embodiments of the present invention, the settings of the movement range of the intermediate slide member and the original table, the size of the opening and the glass stage, etc. can be formed arbitrarily, and the shape of the main body, the mirror,
Each member such as a lamp or a lens may have a mechanism similar to that of a conventionally used real projector.

Furthermore, in the actual projector of the present invention, the above-mentioned embodiments have been explained assuming the case of a single document, but the device of the present invention can also be used when using a thick document such as a book. In that case, a mechanism that allows the document cover to move up and down parallel to the cover holding member, and a mechanism that can detect the opening and closing of the document cover in this state, is used. By providing a switch, it is possible to operate the lighting circuit as described above.

(Effects of the invention) Since the actual projector of the invention has the above-mentioned configuration, the position of the image plane can be adjusted while the original cover is closed, the lamp is turned on, and the image is projected onto the screen. It can be moved, etc., and the position of the image plane can be easily set.

In addition, in the actual projector of the present invention, by sequentially setting small-sized originals on both sides of the glass stage, the projection operation can be continued in a continuous state, and there is no need to interrupt explanations, etc. It disappears.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the configuration of the actual projector of the invention, Fig. 2 is an exploded perspective view showing each component of the invention, Fig. 3 is an explanatory view showing the sliding mechanism of the invention, Fig. 4 The figure is a perspective view showing the structure of the locking mechanism of the document cover, and FIG. 5 is a perspective view showing the structure of the upper part of the device.
6 and 6a are explanatory diagrams showing the arrangement of the switch of the present invention, FIG. 7 is a circuit diagram for lighting the lamp, FIG. 8 is a side view of a conventional actual projector, and FIG. 8a is a diagram showing the arrangement of the switch of the present invention. is its plan view. Symbols in the diagram: 1... Actual projector, 10... Main body, 11... Mirror, 12... Lamp, 13...
Lens, 15... Opening, 20... Intermediate slide member, 21... Opening, 22... Sliding member, 23
...Guide rail, 25...Document mounting table, 26...
...Glass stage, 27...Sliding member, 30...
Document cover, 31... Handle, 33... Cover holding member, 35... Locking mechanism, 36... Locking bar, 37... Guide, 38... Locking portion, 42
~45...Switch.

Claims (1)

[Claim for Utility Model Registration] A part for placing an original is provided on the upper part of the main body, the original is irradiated by a lamp provided inside the main body, the light of the image is reflected by a mirror, and the image is formed through a lens. In a device configured to perform image projection, an intermediate slide member is provided at the top of the main body and is slidable in the front and rear directions with respect to the main body, and an intermediate slide member that is slidable in the left and right directions of the main body with respect to the intermediate slide member. A document mounting table is provided, and the document is placed on the upper surface of the document mounting table and is covered with a document cover, and the opening of the intermediate slide member is arranged in the front and rear direction with respect to the opening on the upper surface of the main body. An actual projector characterized in that the glass stage of the original table is formed to be long and wide in relation to the opening of the intermediate slide member.