JPS5937533A - Picture projector - Google Patents

Abstract

PURPOSE:To display current time, elapsed time, etc., on a screen adjacently to an image of an original even during picture projection by providing an information display board relative to time information adjacently to the original, and operating it by a driving means. CONSTITUTION:A light source lamp 3 is turned on, the original 14 is placed on original placing glass 6, and the position of a projection lens 7 is adjusted to project the picture on the original 14 on the screen 15. At this time, a display selection panel 13 is operated properly to put a time clock generator 11 in operation, and signals indicating the current time and the elapsed time from the operatin point of the display selection panel 13 are sent to a liquid crystal driver 10; and a transmission type liquid crystal display panel 9 is operated by the signals to display numbers showing the current time and elapsed time on the display panel 9, thereby enlarging and displaying them on the screen 15 together with the image of the original 14.

Description

DETAILED DESCRIPTION OF THE INVENTION A transmissive or reflective image projection device that projects onto a screen, a so-called O-head projector.
It is related to.

In a conventional image projection device called an overhead projector, when projecting an image of a document onto a screen, it is necessary to prevent ambient scattered light from shining onto the surface of the document and making the image on the screen fade. In order to see them, it is necessary to darken the room by turning off the lights or closing the blinds.

For this reason, when holding briefing sessions or meetings using an image projection device, it is difficult to check the time by looking at the clock while the image is being projected onto the screen, which can lead to inaccurate time management of proceedings. There was an inconvenience.

The present invention relates to an improvement of an image projection device that eliminates such inconveniences, and its purpose is to provide an image that is adjacent to or the same as the image of the original projected on the screen even while the image projection device is projecting. An object of the present invention is to provide an image projection device that can display the current time or the elapsed time of a meeting, etc., partially superimposed on the corner of the image.

An embodiment of the present invention illustrated in the drawings will be described below.

Reference numeral 1 relates to a transmission type image projection device, and a light source lamp 3 is provided in a lower part of a casing 2 of the transmission type image projection device 1.
When a reflecting mirror 4 is disposed below the light source lamp 3,
In addition, a condenser lens 5 is arranged above the light source lamp 3.

Further, a document placing glass 6 is stretched above the condensing lens 5, and a projection lens 7 and a reflecting mirror 8 are sequentially arranged above the condensing lens 5.
The image of rB+l+ is projected onto the screen 15.

Further, the lower surface-corner of the glass 6 for placing the document l1i12;
A transmissive segment display type liquid crystal display panel 9 is integrally attached to one corner diagonally to the main body 1, and the yt projected from the C source lamp 3 is displayed on the same A transmissive liquid crystal display panel. The time and elapsed time displayed on the display panel 9 are transmitted through the panel 9 and projected onto the screen 15 in the 111th place of hours and minutes.

Furthermore, the above-mentioned transmissive liquid crystal display panel has 90 inputs! /]y
The input terminal of the liquid crystal driver 10 is connected to the output terminal of the time clock generator 11.

Further, the input terminal of the time clock generator 11 is connected to the output terminal of the reference signal generator 12, and the input terminal of the time clock generator 11 is connected to the output terminal of the reference signal generator 12.
is a small batch separately from the power source of the image projection device 1 such as the light source lamp 3! Regardless of whether or not the power supply is connected to the image projection device 1, both the generators 11 and 12 operate normally, and the time clock generator 11 is displayed on the display selection panel. 13 is attached, and by operating the display selection panel 13, the display can be deleted when unnecessary,
It is now possible to arbitrarily select black and white reversal of the display, in which only the display is projected in white or black, and it is also possible to set the time and to switch the time that has elapsed from a predetermined time as desired. It is configured.

Since the illustrated embodiment is constructed as described above, the light source lamp 3 is turned on and the document 14 is placed on the document placement glass 6.
′? i: If the position of the projection lens 7 is set appropriately, the light projected from the light source lamp 3 will be focused by the condensing lens 5 onto the original [14] on the document placement glass 6, and the original 1 will be
The image on screen 4 is clearly projected onto screen 15.

At this time, when the display selection panel 13 is operated appropriately, the time clock generator 11 is operated by the control signal from the display selection panel 13, and the current time and display selection panel 13 are operated.
A signal representing the elapsed time since the operation is sent to the liquid crystal driver 10.
The transmissive liquid crystal display panel 9 is operated by the operation signal 0 of the liquid crystal driver, and numbers indicating the current time and elapsed time are displayed on the display panel 9, as shown in FIG. As shown, when the current time is enlarged and displayed in one corner of the screen 15, one corner diagonally opposite to this and K rrrt +1. ν"tll is enlarged and displayed.

In the embodiment described above, the current time and elapsed time are displayed in hour and minute numbers.
It also displays numbers in seconds and letters AM and PM to indicate morning and afternoon, and roughly shows the elapsed time, 〃minutes left〃, 〃
Display the text "○ minutes have elapsed" not only in the corner of the screen 15 but also in the center of the screen 15 as necessary, or
It is also possible to display characters such as "Please wait for a while" and "Starting soon". In such an embodiment, instead of the time clock generator 11, a microcomputer that makes these determinations may be used. .

Furthermore, when applying the present invention to a reflective image projection device,
A reflective liquid crystal display panel can be used instead of a transmissive liquid crystal display panel, and a segment display can also be replaced by a reflective liquid crystal display panel.
+1 ivy display may also be used. Especially in the case of character display
IJ hook indication is suitable.

According to the present invention, even when the image of the original is being projected on the screen, the time information display board is operated by the time information display board driving means so that the time information is displayed together with the image of the original. Therefore, the current time and other time information can be easily and accurately known without brightening the projection location.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram illustrating an embodiment of an image projection apparatus according to the present invention, and FIG. 2 is a perspective view of a document placement glass in the embodiment. 1... Transmissive image projection device, 2... Casing, 3
...Light source lamp, 4...Reflection mirror, 5...Condenser lens, 6...Glass for document placement, 7...Projection lens, 81.1 Reflection mirror, 9...Transmission type Segment display type liquid crystal display panel, 10...LCD driver, month...
Time clock generator, 12...Reference signal generator, 1
3...Display selection panel, 14...Manuscript, 1s-...
screen.

Claims (1)

[Claims] In an image projection device for projecting an image on a transparent or opaque document onto a screen, when a time information display board is disposed adjacent to the document, a means for driving the same time information display board is also provided. An image projection device characterized by: