JPS59201033A - Overhead projector provided with copying function - Google Patents

Abstract

PURPOSE:To prepare immediately a transparent original from an original if necessary by forming a titled projector by a machine body provided with copying function, an original over provided on its upper face, and a head provided on its upper position. CONSTITUTION:An original cover 2 is attached to the upper face of a machine body 1 so that its one end side is supported by a supporting shaft 4, and the other end side is freely openable and closeable in the upper and lower directions, and a reflecting member 5 and a Fresnel lens 6 are provided on its back face. A head 3 is attached to the tip part of a support 7 attached so as to be freely attachable and detachable to the back face of the machine body 1. A transparent sheet is contained in a paper feed device instead of a copy form, a copying original is placed on an original placing platen 13, and when a copying operation button is pushed after closing the cover 2, a transparent original 8 can be obtained instantaneously from the copying original. The cover 2 is closed, the transparent original 8 is placed on the Fresnel lens 6, and when a projection button is pushed, the original 8 is irradiated by an illuminating lamp 9, and its reflected light passes through a projection lens 10 and a reflecting mirror 12 in the head 3, and reaches a screen 11.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an overherad projector,
In particular, it relates to an Overherad projector with a copying function.

[Prior art]

Conventional over-the-top projectors include a type that illuminates a transparent original from below and projects a transmitted image of the transparent original onto a screen through a projection lens and a reflection mirror disposed above the upper surface of the projector;
A type is known in which a transparent original is illuminated from above and the reflected image of the transparent original is projected onto a screen through a projection lens and reflection mirror placed above the top of the projector. The transparent originals used for the projector include simple figures, characters, etc., except for simple originals that can be created directly by hand. It is created by copying the required image onto a transparent sheet using a copying machine such as an electrophotographic copying machine.

Therefore, when giving classes or explanations using an overhead projector at schools or various explanation halls, etc., there is no particular problem if the explanation can be completed with only a transparent manuscript prepared in advance, If it becomes necessary to explain by projecting a portion of a document, book, etc. on a screen, it is necessary to create a transparent original using a copying machine, so it is necessary to interrupt the explanation midway through. In addition, since copying machines are not usually installed in classrooms and explanation halls, it takes a considerable amount of time to create copies, and has the disadvantage of requiring long interruptions.

[Purpose of the invention]

The present invention eliminates and improves these drawbacks of the prior art, and even when it becomes necessary to project a part of a document or book that has not been made into a transparent original on a screen during an explanation, it can be quickly and easily used. The object of the present invention is to provide an over-the-air projector with a copying function that can cope with the above problems.

[Structure of the invention]

The present invention is a type of over-the-top projector that illuminates a transparent document from above and projects the reflected image onto a screen, and includes a main body with a copying function, a document cover provided on the top surface of the device, and a document cover provided above the device. It consists of a head provided at a certain position. That is, in the present invention, a reflective member and a Fresnel lens are installed on the back side of a document cover that is provided on the top surface of a machine body having a copying function and presses a copy document onto a document table during copying, and the machine body includes: A head is provided above the Fresnel lens and includes an illumination lamp, a projection lens, and a reflection mirror, and illuminates a transparent original placed on the Fresnel lens from above and projects the image onto a screen. When used as a copying machine, the document cover must be opened and a copy document placed on the document table, while when used as an overhead glossier, the document cover must be opened. When it is closed, a transparent original is placed on the frame lens installed on the back.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG.
1), a document cover (2) that can be opened and closed on its upper surface, and a head (3) provided above the document cover (2).

That is, the document cover (2) is supported at one end on the upper surface of the main body (1) by a spindle (4), and this spindle (4)
It is attached so that it can be opened and closed from the other end side in the vertical direction with the other end as the center, and a reflecting member (5) and a Fresnel lens (6) are provided on the back side. In addition, since the surface of the Fresnel lens (6) may be damaged, use a transparent material, such as transparent plastic, to protect the surface.
- sheets may be stacked.

On the other hand, the head (8) is attached to the tip of a strut (7) that is detachably attached to the back of the main body (1), and the underside of the head (3) is attached to a frame lens (
6) An illumination lamp (9) for illuminating the transparent original (8) placed on the transparent original (8) and a projection lens αQ for enlarging the reflected image of the transparent original (8) are provided, and a head ( 3) is provided with one reflective mirror α for projecting the reflected image onto the screen α]).

In addition, the above-mentioned support (7) can be rotated left and right using the lower end of the support (7), which is a part of the main body (1), as a fulcrum, and can be tilted to the left or right. When using the device of the present invention as a copying machine,
It is possible to prevent the head (3) from getting in the way. Further, in FIG. 1, α1 is a document placement table on which a copy document is placed when the apparatus of the present invention is used as a copying machine.

When the apparatus of the present invention is used as a copying machine (=, open the original cover (2), place the original to be copied (not shown) on the original mounting table α4 of the main body (1), and After closing the cover (2), by pressing the copy operation button (not shown) provided on the top surface of the machine body (1), the copying operation is started and a copy is obtained. ) By storing a transparent sheet in place of copy paper in the paper feeder (not shown) of the printer, a transparent original can be instantly obtained from a copy original.

When using the device of the present invention as an OVERRAD projector, close the document cover (2) and place the transparent document (
8) and press the projection button (not shown) provided on the top surface of the main body +11 to display the transparent original (8).
) is irradiated by the illumination lamp (9), the irradiated light hits the reflective member (5) and is reflected, and the reflected light is reflected by the Fresnel lens (
6) and the transparent original (8), passes through the projection lens α0) in the head (3) and the reflection mirror α, reaches the screen η, and projects the image of the transparent original (8). It is.

〔Effect of the invention〕

Since the Over Rad projector of the present invention has both a copying function and a projection function, it can be used to enlarge a part of a book, etc., in addition to a transparent manuscript prepared in advance during an explanation at various explanation venues. When it becomes necessary to project something onto a screen, you can create a transparent original from that original on the spot, so you can respond quickly and there is no need to interrupt the explanation in the middle, which is extremely convenient. . Moreover, the practical effects of the present invention are great, such as the fact that the mounting table for placing a transparent original for an over-the-top projector and the original cover for a copying machine can be used together, making the entire device more compact. be.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Figure '41 is an explanatory diagram for explaining the present invention in detail. 3 Detailed explanation of the invention (1)...Airframe body (2)...
・Document cover (3)...Head (4)
)... Support shaft (5)... Reflective member
(6)... Fresnel lens (7)...
・Post (8)...Transparent manuscript (9)
......Lighting lamp α0...Projection lens α...Screen α Proverb...
Reflection mirror α1...Original table

Claims (1)

[Scope of Claims] A document force provided on the upper surface of a main body of a machine having a copying function, which presses a copy document onto a document table during copying. A reflecting member and a Fresnel Thin 1 are installed on the back of the par, and the body of the aircraft is provided with an illumination lamp, a projection lens, and a reflecting mirror located above the Fresnel lens, which are placed on the Fresnel lens. An over-the-top projector equipped with a copying function, characterized in that it is equipped with a head that illuminates a transparent original document from above and projects the image onto a screen.