JPH0368930A - Overhead projector device - Google Patents

Abstract

PURPOSE:To automatically set a frame around an image surface by interlockingly moving opposed side members under the platen of an overhead projector. CONSTITUTION:A frame member is automatically moved until information is obtained by a size detecting sensor 45 provided in the paper conveyance path of a film feeding device 20, the frame is moved corresponding to an original size and the film is taken out from an original tray 21 to be positioned on the platen 6 by an arm 30. The members 81 and 82 of the frame 80 have the same structure. By providing rods 83 in parallel from the end parts of the members 81 and 81a and driving a rack 84 and a pinion 85 with a motor 86', the frame members are interlockingly moved. The member 82 is driven by a motor 86 and both members 81 and 82 are automatically positioned with the signal of a sensor. In the case of using and projecting a frameless film original, the frame is clearly projected on a screen by such constitution. The motor is reversely rotated with an original ejection signal and the frame is restored to a home position.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an overhead projector system 2i (hereinafter referred to as a 0-port P system) that forms an image on a transparent film and projects the image onto a screen. In addition, when using a film original without a frame, a frame is automatically set around the image, and a frame is automatically set around the image. The present invention relates to an overhead projector device capable of projecting a JITIIJI image.

(Prior Art) OHP devices are conveniently used to display diagrams, explanations, etc. on a screen instead of a blackboard when a lecture ministry provides an explanation at a lecture meeting or the like. This O-NIP device is of the type that reflects light onto the image of @Maki and projects it onto a screen via a lens and mirror.
A so-called anti-rope type device and a so-called transmission type device are used, which transmit light through a transparent film and project the transmitted light onto a screen via a lens and a mirror.

For example, in the case of a transmission type 011P device, the first
The one shown in FIG. 7 is generally used.

In the illustrated conventional OHP device 1, a lamp 8 and a reflector device as shown in FIG.
includes a Fresnel lens 7 and a platen 6 as a light focusing means.
and.

Further, as shown in FIG. 17, a head section 10 is disposed from the side of the apparatus main body 2 via an arm 13, and a lens 11 provided with a focus adjustment means is disposed on the head section 1o. , a mirror 12 is provided above it. Note that the arm 13 supporting the head portion is provided to the main body 2 of the device 2f via a hinge 13a, and
When the position is not in use, the arm is swung close to the main body of the device, and the head portion is configured to be stored in contact with the top surface of the main body of the device.

In the OHP apparatus 1 having the above-described configuration, as shown in FIG. 18, the light from the lamp 8 is transmitted through the film original UP set on the platen 6, and the transmitted light is An image is formed by a lens 11, reflected by a mirror 12, and displayed on a screen 14.

(Problems to be Solved by the Invention) However, when using the conventional OHP apparatus as described above, there are cases in which a film original with a frame is used, and cases in which a film without a frame is used. When using a film with a frame, the frame part of the film is projected onto the screen, so the projected image is separated by the frame, giving a clear impression of the image part. There is an advantage.

On the other hand, when a frameless film is used, the dividing portions of the image are unclear, resulting in a blurred area around the image surface, causing a problem that the impression of the image becomes weak.

Therefore, when using a frameless film as described above, a method is used in which a frame is placed on top of the film placed on a platen to match the size of the film, and the frame is projected onto the screen. be. However, as mentioned above, using a separately provided frame member
For speakers who are close to the screen and giving explanations,
This will force you to perform extremely troublesome operations. Furthermore, each time the image projected on the screen by the O-P device changes, the
Operating the OHP device by oneself has the disadvantages of interrupting the explanation and requiring the speaker to travel a relatively long distance each time to operate the OHP device. There are drawbacks.

In addition, as mentioned above, in order to solve the problem that the work of setting film in an OHP device is inefficient, automatic film feeding means is used as shown in Japanese Utility Model Application Publication No. 49-4632. It is proposed that.

In the conventional apparatus, for example, as shown in FIG. 19, a document tray 2 is provided on one side of the OHP apparatus 1.
1, and a discharge tray 24 is arranged on the other side, and furthermore, conveying roller means 23, 23, etc. are provided at a predetermined interval above the platen of the OHP device. .

Then, each time the film original is moved, the original tray 2 is
The feed roller device ff22 provided in 1 and the conveyance roller means 2
3 to eject the film original on the 0-port P device to the ejection tray 24, and set a new film original on the platen E.

However, although providing a means for moving the film original as described above can reduce the burden on the G4 performer, it is relatively difficult to position the film original. By providing a large protruding member on the OHP device, there is a problem that the space occupied by the OHP device becomes very large.

On the other hand, when a roll film is used instead of a film original cut to a predetermined size, there is a method as shown in Japanese Utility Model Publication No. 52-37227.

The device shown in this conventional example has a configuration as shown in FIG. 20, and has a film feeding section 27 on the 14 side at the 0HPH position, and a film winding section 27 on the 14 side at the 0HPH position. A feeding device d26 in which S28 is arranged is provided.

The lecturer then drives the winding unit 28 for a time corresponding to one frame of the film in accordance with the order of the explanation, and gives an explanation using the image of the film located on the platen at the 0HP5A position. I can do it.

However, as mentioned above, using a long film is relatively easy to make with a versatile film like photographic film, but it is difficult to use a long film for a very large screen such as A4 size. However, there is a problem in that it is difficult to apply.

When using a general OHP device, other items are appropriately written on the image surface of the film original and projected onto the screen, but when using a long film like the one mentioned above, the frames are replaced. The disadvantage is that it cannot be used.

As mentioned above, using a film manuscript cut to a certain size means that you can rearrange the film arbitrarily to suit the content of the lecture, or add necessary information to the image surface of the film. It is very convenient because it can be done. However, when using a frameless film, there is a problem that the periphery of the image projected on the screen may be blurred.

(Object of the invention) The present invention is directed to the conventionally used OH
An object of the present invention is to provide a device that can automatically set a frame around a frameless film when a frameless film is used in a P device.

<Means and effects for solving the problems> O of the present invention
The HP device is provided with a lamp inside the main body of the device, and a platen is provided on the top of the main body of the device, and the light of the lamp is transmitted through the image of the film original placed on the platen. The light is focused by a lens and reflected through a mirror,
The present invention relates to a device configured to project images onto a screen.

The overhead projector device of the present invention combines a film feeding device comprising a means for setting a film document on a platen of the projector device and a means for returning the film document. , the lower part of the platen of said apparatus is provided with opposing side members movable respectively in order to set a frame around the image on the film, said frame members being adapted to the size of the film or the direction of film transport; They are moved together to form a frame around the image plane and are projected.

In addition, in the overhead projector device of the present invention, instead of moving the frame member as described above, a light transmitting portion is provided inside the disk according to a certain film size (), and the film is moved. The disk can be configured to be rotated in accordance with the vertical and horizontal feed of the disk.

Further, the film feeding device provided in combination with the overhead projector device of the present invention includes a main body portion composed of a document tray, a paper feeding device, and a paper conveying device, and a film document fed out from the paper conveying device. ,
An arm member for positioning on the platen, and the film feeding device has a document tray and an ejection tray disposed on the side opposite to the overdrive device main body. and a means for performing an operation of returning the film original, and detects the orientation of the original while moving the film from the original tray to the platen, and moves the frame member. It can be configured to

In addition, in the apparatus of the present invention, when the film original placed on the platen of the overhead projector device by the film feeder is placed on the original tray at the neck of the film feeder 5A, Positioning is performed in a regulated state according to the feeding direction or size by multiple sets of paper guide devices on both sides, and the film original set on the platen is aligned with the optical axis of the platen. It can be configured such that the center can be set.

Since the overhead projector device of the present invention has the above-described configuration, when a frameless film is used, a frame can be automatically formed around the projected image, and it is possible to create a frame for the audience. This makes it possible to make a strong impression on the contents of the screen projected on the screen.

In addition, the frame member of the present invention can automatically set the range of movement of each frame member according to the size of the film or the feeding direction, so it is possible to prevent the burden on the speaker. It is.

Furthermore, the OHP device of the present invention can be combined with the main body of the OHP device,
In addition to being able to use a film feeding device and reducing the space occupied by the film feeding device, it is also possible to easily and reliably set the film original, and it is possible to set the film original on the platen. Be sure to place the film original in the center of the OHP device! d is done.

In addition, in the device of the present invention, in addition to the frame setting operation, the magnification change of the 0-head P\i device and the movement of the film document on the platen and in the film feeder can be controlled remotely. Since this can be done using a means, the presenter can operate the OHP device from a distance.

(Example) The configuration of the 0-port P device of the present invention will be explained according to the illustrated example.

The OHP device 1 of the present invention shown in FIG. 1 can use the device shown in the conventional example, and has a lamp and a reflecting means arranged inside the main body to reflect the light of the lamp. , by condensing light through a Fresnel lens, transmitting it through a film original placed on a platen installed above, forming an image using a lens device installed in the head, and reflecting it on a mirror. , and is configured so that it can be projected onto a screen.

Further, in the embodiment of the present invention, the platen 6 provided at the upper part of the main body 2 of the OHP apparatus is provided so as to be movable in directions toward and away from the head section 10.

The motor 19 is driven based on a signal input via a remote control receiver 3a provided on the side of the main body 2 to drive the platen 6 upward, thereby forming a zoom mechanism. .

In the embodiment of the OHP apparatus of the present invention, the platen 6 is attached to a support arm 16, and a rack 17 provided on the arm 16 has a pinion 18 driven by a motor 19.
I'm trying to make it fit together. Further, in the embodiment described above, a speed reduction mechanism or the like is disposed between the motor and the pinion 18, so that even when a pulse motor or the like is used, the platen can be moved up and down slowly.

The motor 19 is driven in the forward and reverse directions by a signal inputted through the receiving section 3a, thereby vertically moving the platen 6 through the arm 16, thereby producing an image of the film original. It is possible to perform operations to enlarge and reduce the surface.

Therefore, in the OHP apparatus of the present invention, when enlarging or reducing a part of the image surface of a film original and projecting the image, the remote control device can be used to effectively perform the operation. Therefore, it is possible to obtain a device that can be easily operated without the trouble of switching lenses as in the case of conventional devices.

Note that in the illustrated OHP device 1, the main body 2
A fan 4 is provided to dissipate heat from the lamp, and in order to direct the heat emitted by the fan in a fixed direction, an exhaust guide means is provided at the position of the fan. By arranging the switch mechanism 3 and the remote control receiver 3a of the device on the side of the exhaust air guide means, the device can be configured compactly.

(Step projection frame setting means provided in 01-IPlf&) The embodiment shown in Fig. 2 is for displaying a frame on the image projected on the screen when using frameless film. In this embodiment, the frame member 80 is arranged on the lower surface of the platen 6, and as will be described later, the frame members for setting the four sides are made into a pair of frame members on both sides. It is possible to form a frame according to the size of the film original by driving the motor 86.

The movement of the frame member is carried out by a size detection sensor 45 provided on the paper transport path of the film transport device 20, which detects the transport direction and size of the film when the film document is moved within the paper transport path. By performing these operations and inputting the information to the control device, the frame member is moved in accordance with the detected size of the film original.

The above-described movement of the frame member is automatically performed after the film original is taken out from the original tray, passes through the paper conveyance path, and is positioned on the platen by the arm member.

The movement mechanism of the frame member can be performed by a mechanism as shown in FIGS. 3 and 4. In this example of the moving mechanism, FIG. 3 shows a drive mechanism for a frame member 81.81a that increases AI in the vertical direction of the film document by +1, and FIG. 4 shows a drive mechanism for the frame member 82.82a for the horizontal direction of the film document. The driving avA of . In each of the above embodiments, the drive means for the frame members are described using the same reference numerals, so the drawings in Group 2 are as follows:
This will be explained using FIG. 3 as a representative example.

In the embodiment shown in FIG. 3, each frame member 8
1. From the end of 81a, make it parallel,
A rod 83.83 is provided.

In addition, racks 84 are provided on opposing surfaces of the zero points, and one binion 85 is provided for each rack 84.
is arranged, and by driving the binion with the motor 86, the two frame members 81.81a on both sides are moved in the direction of moving toward and away from each other. Then, as described above, by moving the frame members 81.81a, a frame for the vertical screen of the film original is set.

Similarly, the frame member 82.82a shown in FIG.
The horizontal frame of the film original is automatically set based on the signal from the sensor, and the frame for the film original is formed by moving the frame members from all four sides. be able to,
When projecting using frameless film, a frame can be clearly projected on the screen.

Furthermore, when projection of the film original is finished and the film original on the platen is ejected by the arm, the motor is driven in the opposite direction by the compensation signal, and each frame member returns to its home position. Then, special equipment is prepared for loading the next film original.

Another embodiment of the frame member of the present invention, shown in FIG. 3 shows another example for configuration.

In the embodiment of the frame 1180a shown in FIG. 5,
A rack is formed around the frame member 87, and the frame member is rotatably provided inside an annular frame guide and can be rotated in the direction of the arrow by a drive motor 89. .

Further, the frame member 87 has a light transmitting portion 87b in the center thereof.
is provided, and the periphery thereof is formed as a light blocking portion 87a. The light transmitting portion 87b is arranged so that the film original is A4, for example.
If the target size is a size, it is formed to fit A4 size. On the other hand, if the film document is of A3 size, another member can be attached to the frame guide and used.

When using the frame member configured as described above, when the film document passes through the paper conveyance path in the film feeding device shown in FIG. feed mode is detected. The motor 89 is driven by the feeding direction information, and when a film original is set on the platen, the frame member is set at a position corresponding to the film original.

As mentioned above, by providing a frame member at the bottom of the platen, even when using frameless film, a frame is automatically set for the image projected on the screen, making it possible to keep the screen clear. can be shown.

(When disposing a film feeding device in combination with an OHP device) The embodiment shown in FIG. It shows. The film original P can be set on a platen provided on a part of the stage 5 of the apparatus main body 2 by a film original feeding means provided in the film feeding device 20.

In the film feeding device ff120 of the present invention described above,
The arm member 30 is protruded from the upper part of the device main body 2 t! On the other side, a document tray 21 and a discharge tray 24 are provided vertically.

Then, the film original P is sent out from the original tray and discharged onto the platen by a paper feeding device provided inside the film feeding device 20, and the film original is moved and set on the platen by the arm member 30, To enable image projection.

In addition, when replacing the film original, the arm member 3
0 to move the film original on the platen toward the film feeding device, move it toward the ejection tray by a conveying means provided inside the film feeding device, and then feed a new film original from the document tray 21. Make sure to do the following.

In the apparatus of the present invention, operations such as moving the film original can be performed using a remote control operating device 9 shown in FIG. 6a. The remote control operating device 9 includes a power switch 9a, a clear button 9b,
A button 9c for feeding and discharging film originals, and buttons 9d and 9e for zooming are provided.

Of these operation buttons, buttons 9b and 9c are used to send signals to the film feeding device to control the transport of the film original, and among the other buttons, the zoom button 9d and 9e are used when moving the platen up and down to enlarge or reduce the image surface, as will be described later.

In the overhead projector device equipped with the automatic film feeding device of the present invention, 0HPiffi
Control of the operation of the zoom function and operation of feeding the film document by the film feeder can be performed using the remote control device 9. Therefore, when giving a lecture using the 0-port P device, the lecturer can By performing remote control from the position of the screen, it is possible to easily switch screens and perform other operations.

(Configuration of Film Feeding Device) The examples shown in FIGS. 7 and 8 show the configuration of the film feeding device 20 of the present invention. FIG. 7 is a sectional view of the film feeding device, and FIG. 8 is a sectional view of the film feeding device. Figure 3 shows a top view of the device with the cover removed.

In the film feeding device 20 of the present invention, as shown in FIG. 6, an arm member 30 is provided so as to be retractable toward the upper part of the platen of the OHP device, and a document tray is provided on the other side. and a discharge tray 24. In the case shown in FIG. 7, the document tray is omitted, and the end portion of the document tray is shown by a guide 21a connected to the document tray.

The arm member 30 disposed on the main body side of the film feeding device 20 has a pad 31 made of soft rubber or the like having a relatively large rJ friction coefficient at the lower end of the arm member 30 . By pressing the pad against the film original, the film original can be moved on the platen 6 following the movement of the arm member.

An arm drive device 35 is provided for the arm member 30, and the drive device 35 is connected to the arm support frame 40.
A binion 36 is engaged with a rack 32 provided on the arm member, and a drive shaft 37 of the binion is driven to move the arm member 30 in the front-rear direction. .

Further, an arm support frame 40 that supports the arm member 30 is connected to a solenoid 42 via a link 43, and is swung through a shaft (not shown) as the solenoid 42 is turned on and off. Further, a spring 41 is provided on the opposite side of the driving means using the solenoid, and the arm support frame 40 is caused to swing by the spring 41 and the solenoid.

By swinging the arm support frame 40, the arm member 30 is caused to swing about the pinion 36, and the pad 30 provided at the tip of the arm member 30 is moved.
can take two positions: a position where it is suppressed relative to the film original, and a position where it is separated from the film original.

That is, when the arm member 30 moves the film document during paper feeding, the support frame 40 is swung counterclockwise by the operation of the solenoid as shown by the chain line in FIG. takes a position where it presses the film original, and in this state, the pad 31 is moved over the platen 6, thereby moving the film original to the left side in the figure.

Also, when ejecting a film original, the film original on the platen 6 is moved toward the ejection means by driving the arm member while the pad is sliding on the platen, as in the case of feeding the paper. Let them do it.

In addition to the above-mentioned drive device for the arm member, the film feeding device of the present invention includes a paper feeding means for feeding the film original from the original tray toward the platen, and a paper feeding means set on the platen 6 inside the main body. A discharge device is provided for moving the film original to the discharge tray 24.

As a means for feeding paper from the original tray, a paper feeding device 50 is used for the guide 21a arranged at the end of the original tray.
are placed. This paper feeding device 150 includes a paper feeding roller 5
1 and a separating member 52 are provided to face each other, and means for pressing the separating member 52 toward the paper feed roller 51 with a predetermined pressure is provided.

The sheet feeding device feeds the film originals one by one toward the paper transport path 53 while performing a sorting operation on the film originals, and the transport roller device 54 sends the film originals onto the platen of the OHP device. .

During the feed 1iiff, a paper sensor is provided in front of the paper feeder, and the paper sensor detects a film document on the document tray, thereby driving the paper feeder. Furthermore, as shown in FIG.
are placed.

The sensor 45 is for detecting the size of the film original being transported, and detects the size of the film original and whether the feeding direction is vertical or horizontal, and inputs the information to the υNll device. Operations such as controlling the movement affi of the arm member are performed.

In order to return the film original from above the platen 6 to the paper feeder, a return device is disposed below the paper feeder. This film document returning device is composed of a discharge roller 5
6, and a discharge port 57 which is formed by expanding upper and lower guide plates on the platen side of the roller, so that a film original sent from above the platen 6 by an arm member can be easily guided to the discharge port 57. do it like this.

Further, a sensor 5 is provided on the platen side of the discharge roller 56.
8 is provided, and operations such as setting the driving time of the ejection roller can be performed based on information that a film original is detected by the sensor 58.

(Conveyance of film original in film feeding device) In the film feeding Hi!j of the present invention as shown in FIGS. 2 and 3 described above, when feeding the film original from the document tray, the film feeding device In response to the feed signal inputted to , the paper feeding device is operated, and the film original is sent out from the original tray and discharged onto the platen 6 .

After the film original is ejected onto the platen,
The moving distance of the arm member 30 is set corresponding to the size. As described above, the size of the film original is determined by the sensor 45, and the feeding time of the film original, such as l1tll1, is determined by each roller device for a certain period of time after passing the sensor. By performing tllm to drive the film original, it is possible to accurately feed the film original.

After the film original is fed onto the platen 6 as described above, the solenoid 42 is activated to swing the arm member 30 counterclockwise, and with the film original pressed by the pad 31, the arm is driven. Rotate the binion of device 35.

Then, by driving the pinion 36, the arm member 3
0, while pressing the film original with the pad 31,
The li! is moved in the direction of the arrow X by a distance corresponding to the niceness of the film original! II will be done.

Thereafter, the solenoid 42 is turned off and the spring 4
The frame 40 is returned with a force of 1 to rotate the binion in the opposite direction and return the arm member 30 to the position shown by the solid line in the figure. That is, by housing the arm member inside the main body, the shadow of the arm is prevented from appearing when the film image is projected onto the screen. By the above operation, the film original is set with the center of the original aligned with the center of the optical axis on the platen.

As described above, when a command to replace the film wtm is given manually after the film has been placed on the platen and an image has been projected, the arm member 30 is first projected above the platen. , after the pad 31 has been moved to a predetermined position above the platen, the solenoid 42 is turned on and causes the arm support frame 40 to swing, thereby pressing the pad 31 against the film document.

Then, the pinion 36 is driven to move the arm member 30 in the retracting direction (arrow x1 direction) to move the film original toward the discharge port 57.

When the leading edge of the film original is detected by the sensor 58, the drive of the ejection roller 56 is started to move the film original toward the ejection tray 24.
After the sensor 58 detects the film original, the discharge roller continues to be driven for a certain period of time.

When the film original set on the platen is ejected as described above, the film original is then fed from the original tray.

Then, the operation of setting the film original and the operation of discharging the film document are repeated in sequence, and the speaker can continue his explanation using the 0)-IP device.

(Vapor guide in document tray) As shown in FIG. 9, the film feeder V! ! 20 original trays 21
, several sets of guides are provided to guide both sides of the film original. By the way, is the film feeding device shown in Figure 4? The ff 120 is provided with a remote control receiving section, as will be explained with reference to FIG. 15, and the operation of the device can be performed by a remote control operating device as shown in FIG. 1a. In the example shown in FIG. 9, the vapor guide indicated by reference numeral 60 is used as a guide for horizontal feeding, and the guide 61 is used for vertical feeding.

Then, the film original set on the original tray 21 is regulated on both sides by guides 60, 61, and fed out in the direction of arrow X by the paper feeding device. Then, the arm member 30 moves the arrow
By moving in the 1X1 direction, positioning toward the image projection position and movement toward the return device are performed.

The vapor guide provided on the document tray 21 of the film feeding device 2220 is constructed as shown in FIGS. 10 to 12. The embodiment of the guide shown in FIG. 10 shows the case where two sets of guides 60 and 61 are provided, and each guide has two guide plates on both sides facing the center of the document tray. They are numbered so that they can be moved symmetrically.

When the movement of the guide is shown in the case of the guide 60,
Rods 63, 63 are provided in parallel to each other on the guide plates on both sides, respectively, toward the opposing guide plates. These rods 63 are formed with racks 64 on opposite sides, and binions 65 are arranged for the racks on both sides.

After placing the film original on the tray, by moving one guide plate toward the film original, the other guide plate is also moved toward each other by the rack and pinion mechanism. This allows the film original to be positioned toward the center of the original tray. Note that the other guide device 61 is also capable of suppressing and positioning the film document by providing a moving mechanism having the same configuration as that of the guide 60.

Further, the embodiment shown in FIG. 11 shows a case where three sets of vapor guides are provided.

Each of these guides 60 to 62 uses a moving mechanism similar to that shown in FIG. 10 to press and position film originals of different sizes from both sides.
A film original sent onto the OHP[ff platen by the film feeding device is accurately centered when set on the platen.

Furthermore, in the embodiment shown in FIG. 12, two sets of guides are arranged, and of each guide, the guide 60 on the paper feeder side is used for positioning for horizontal feeding of A4 size sheets. , and other guides 61 are provided so as to be able to accommodate vertical feeding of A4 size items.

Then, with the A4 sheets mixed in length and width,
Even when the film document is set on the document tray 21, it is regulated by the corresponding guides so that the sheet feeding operation can be performed with the center of the film document aligned. Incidentally, the point r1 where the guide 61 is provided is A
It will be set slightly further back than the width of size 4.

(Arm member configuration and moving device 41) In the film feeding device of the present invention, the arm member 30 is configured as shown in FIGS. 13 and 14. The relationship with the drive means and the positioning mechanism at the end are shown.This arm member 30
As described above, the pad 31 is provided at the end on the platen side, and the stopper 33 is provided at the other end of the arm member.

A rack 3 is attached to the lower surface of the intermediate portion of the arm member 30.
2 is provided, and when the rack is engaged with the binion 36 and the binion is driven in the forward and reverse directions, the arm member is moved in the left-right direction in the figure.

In the arm member of the present invention, the rack 32 is formed on the lower surface of the arm member with predetermined spaces 34, 34a on both sides. Part 34 where this rack is not provided.
34a, when the arm member 30 is moved by the pinion 36 of the drive device 35, even if the arm member 30 moves a predetermined length, even if the drive aSS mechanism continues to operate.
The binion is provided to idle and stop feeding action on the arm member.

Further, in the above embodiment, when the arm member 30 is made to protrude above the platen, the end of the rack 32
A spring member 34b is provided in order to prevent the next returning action from being disabled if the rack and the binion become disengaged when the rack and the binion are disengaged when the feeding action is stopped due to idle rotation of the rack. I have to.

Therefore, when the arm member is projected onto the platen, even if the rack and the binion are disengaged and the binion still spins idly, when the binion stops rotating, the arm member is moved to the spring member 34b. It is held in such a state that it is moved to the rear by the force of. Then, when the arm member is returned next time, the meshing relationship between the binion and the rack can be easily restored, and the arm member 30 can be pulled back into the film feeding device.

The example shown in FIG. 114 is a plan view of the drive mechanism of the arm member 30, and as shown in the figure, the arm drive device 25 for driving the arm member is provided on both sides of the main body frame. The drive shaft 37 is supported by a bracket 39, 39a via a bearing, and a pinion 36 provided on the drive shaft. Further, a drive gear 38 is provided at one end of the drive shaft, and the gear 38 is driven in forward and reverse directions by a drive mechanism (not shown), and moves the arm member via a pinion. .

As described above, the support means for the arm member 30 is constituted by the support frame 40, and the frame 40 is provided with a swing mechanism using a solenoid and a spring.

(Other Embodiments of Arm Member Moving Mechanism) As shown in FIG. It is also possible to configure the film original so that it can be moved in the horizontal direction on the platen 6.

Further, in the embodiment shown in FIG. 15, an arm lateral movement device 70 is provided in a sealed manner on the arm member 30, and by operating the device 70 by a drive device 71, only the arm member 30 can be moved. Alternatively, the frame supporting the arm member 30 can be configured to move in the Y direction.

To this end, for example, it is possible to provide a lateral movement device to the arm support frame 40 shown in FIG. 14, and use the lateral movement device to move the arm member 30 in the lateral direction together with the frame. .

In the embodiment shown in FIG.
is provided, and the drive mechanism for the arm member 30 can be operated by the signal received via the receiving section 72.

Further, the receiving section is also provided in the embodiment described above, but in the case of this embodiment, the received operation information and the content of the operation in the film feeding device are displayed on the lamp provided on the display section 73. displayed by.

In the embodiment shown in FIG. 16, the arm member provided on the film feeding device 20 is constituted by an arm 75 with a roller, and a drive roller 76 is provided at the tip of the arm 75. In this embodiment, the arm 75 can be provided so as to be movable relative to the support mechanism of the film feeding device, as in the case of the arm member 30 described above, but a drive roller 76 is provided at the tip of the arm. As a result, there is no need to provide an eui for moving the arm relative to the frame of the film transport device.

After the film document is fed to the upper part of the 014P device main body 2 by the feeding means of the film feeding device 20, the roller is driven to move it on the platen 6,
By setting the film at a predetermined position on the platen 6, the image of the film original can be projected.

Further, as will be described later, in the arm 75 with a roller, when a means for vertically moving the platen 6 is provided, the arm can be oscillated so that the arm can follow the movement of the platen. It is also possible to provide moving means.

Furthermore, in order to prevent the shadow of the arm 75 from appearing when projecting the image of the film original,
When the P device is in operation, it is necessary to provide a mechanism for retracting the arm directly inside the film feeder 5A, or a mechanism for swinging the arm outside the optical path.

As mentioned above, by using a means for moving the arm in the lateral direction (Fig. 15), a means for moving the film document using a drive roller (Fig. 16), etc., the document can be set on the platen, for example. When enlarging a part of the image of a film original, the image position of the film original can be freely set.
Any part of the image can be easily enlarged and projected.

In addition to the above-mentioned t11 structure of the present invention, in the case of the arm 75 with rollers shown in FIG. By providing a means for arbitrarily pressing and driving the roller against the platen, it is possible to arbitrarily perform diagonal feeding of the film original.

In addition, the arm 7 can be used without driving those drive rollers.
5 in the paper feeding direction, the film original can be moved on the platen in both the setting direction and the discharging direction, as in the case where a pad is provided.

(Effects of the Invention) Since the overhead projector device of the present invention has the above-described configuration, it is possible to automatically form a frame around the projected image when using a frameless film. As a result, the contents projected on the screen can make a strong impression on the audience.

In addition, the frame member of the present invention can automatically set the range of movement of each frame member according to the size of the film or the feeding direction, so it is possible to prevent the burden on the speaker. It is.

Furthermore, the OHP device of the present invention can be combined with a film feeding device, and the space occupied by the film feeding device δ can be reduced.

The operation of setting the film original can be performed easily and reliably, and the film original set on the platen can be reliably placed in the center of the 0l-IP device.

In addition, in the apparatus of the present invention, in addition to setting the frame, changing the magnification of the OHP device and moving the film original on the platen and in the film feeder can be performed using remote control means. Therefore, the presenter can operate the OHP device from a distance.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an OHP device of the present invention, and Fig. 2 is a perspective view of an OHP device of the present invention.
An explanatory diagram when the device is provided with a frame member, Fig. 3 is a plan view of the frame member in the vertical direction of the film original, Fig. 4 is a plan view of the frame member in the horizontal direction of the film original, and Fig. 5 is the rotating frame. 6 is a side view of a device combining the 0-port P device of the present invention and a film feed device, FIG. 6a is an explanatory view of a remote control device, and FIG. 7 is a diagram of a film feed device of the present invention. side sectional view,
8 is a plan view thereof, FIG. 9 is a plan view of a device combining an OHP device and a film feeding device, FIG. 10 is an explanatory diagram of a guide member provided on a document tray, and FIGS. 11 and 12
The figures are explanatory diagrams of other embodiments of the guide member, and the first
Figure 3 shows the arm member and its drive! Explanatory diagram of lJ mechanism, 1st
Fig. 4 is a plan view showing the relationship between the arm member and its drive mechanism, and Fig. 15 is an explanatory diagram of the device for lateral movement of the arm member, ff! Fig. 16 is a side view when a roller is provided on the arm member, Fig. 17 is a perspective view showing the configuration of a general 0-port P device, Fig. 18 is an explanatory view without showing the state of projection by 0HPliff, Fig. 19 This figure is a side view of a conventional automatic film document feeder, and FIG. 20 is an explanatory diagram of a driving means when using a roll film. Code 1 in the diagram: OHP device, 2: device main body,
10... Head unit, 15... Platen vertical movement device, 20... Film feeding device, 21
...Document tray, 24...Ejection tray, 3o...Arm member, 31...Pad, 32...Rack, 35... ...Arm drive device, 36...Pinion, 4o...Arm support device, 42...Solenoid, 45...
... Paper size sensor, 50 ... Paper feeding device,
53... Paper conveyance path, 54... Conveyance roller device, 56... Discharge roller, 55, 58...
...Sensor, 60-62...Guide,
64...Rack, 65...Binion,
7o... Arm lateral movement bag d175, old... Arm with roller, 80, 80a... Frame device, 81
・82...Frame member, 87...Frame with rack. Figure 2 Figure 3 Figure 4 Figure 5 Figure 16 Figure 13 Figure 14 Figure 242-

Claims (4)

[Claims] (1) A lamp is provided inside the device main body, a platen is provided at the top of the device main body, the light from the lamp is transmitted through the film original placed on the platen, and the light that has passed through the screen is reflected by a lens. In an overhead projector device configured to condense light, reflect it through a mirror, and project it onto a screen, the overhead projector device includes an operation of setting a film original on a platen, and an operation of returning the film original. a film advance device having means for performing the above operations, and the opposing side members are each moved in motion to set a frame around the image on the film at the bottom of the platen of the overhead projector device. An overhead projector device, characterized in that the frame member is moved in accordance with the size of the film original or the film feeding direction to form a frame around the image plane and project the image. (2) The frame member is configured such that a light transmitting portion of a predetermined size according to the film size is provided inside the disc, and the disc can be rotated in accordance with the vertical and horizontal feeding of the film original. An overhead projector device according to claim 1, characterized in that: (3) A lamp is provided inside the device, a platen is provided at the top of the main body, the light from the lamp is transmitted through the image surface of the film original placed on the platen, and the light transmitted through the screen is transmitted through the lens. An overhead projector device configured to collect light, reflect it through a mirror, and project it onto a screen is used in combination with a film transport device, and the film transport device provided in combination with the overhead projector device is: The main body includes a document tray, a paper feeding device, and a paper transport device, and an arm member for positioning the film document sent out from the paper transport device on the platen, and the film transport device A document tray and an output tray are arranged on the opposite side of the overhead projector main body, and a means for detecting the orientation of the document is provided in the paper conveyance path of the main body, so that the document is directed from the document tray toward the platen. While moving the film document, based on the detected document orientation information,
The overhead projector device according to claim 1, characterized in that the frame member is configured to be moved. (4) When the film original placed on the platen of the overhead projector device by the film feeding device is placed on the document tray of the film feeding device, the film original is placed on both sides by a plurality of sets of paper guide devices, respectively. Positioning is performed in a regulated state according to the feeding direction or size of the film, and the film original set on the platen is set so that the center of the film original coincides with the optical axis of the platen. 4. The overhead projector device according to claim 3, wherein the frame member is also moved toward the center of the platen.