JPH0529096B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an enlargement projection device for optically enlarging and projecting photographs, drawings, etc., and particularly for displaying images that are dynamically or automatically switched. The present invention relates to a display image variable enlargement projection device suitable for displaying images.

[Conventional technology and problems]

Currently, many electric signboards with fluorescent lights inside are installed in buildings of all sizes, mainly for advertising purposes, and in coffee shops and other stores, panels are installed to decorate the interior of the store or for advertisements. An electric light panel is installed that illuminates photos and drawings of landscapes, people, illustrations, etc. with internal fluorescent lights.

However, these electric signboards and electric panels are bulky and require a large installation space, and the installation structure must also be sturdy, which poses the problem of requiring a great deal of effort and expense for installation and maintenance. It was hot. Another problem was that the displayed content was fixed, and to change it the electronic signboard or the electronic panel itself had to be replaced.

This invention was made in view of the above circumstances,
The purpose of this is to make it possible to easily change the display for advertising and interior decoration, which has conventionally been based on electric panels and electric signboards, and to provide animation and flexibility. An object of the present invention is to provide a simple, compact, and inexpensive display image variable enlargement projection device.

[Means for solving problems]

In order to solve the above problems, the present invention includes a carrier mounting part 5 to which the display image carrier 4 can be detachably mounted, a light source 6, and an enlarged projection of the display image on the display image carrier 4 using the light from the light source 6. The projector unit 1 is equipped with an optical system that controls the lighting time of the light source 6 in a variably settable manner, and a trigger input terminal ₁₅₁ that starts the control when a trigger signal is input, and an end of the control. This configuration incorporates a power supply control means 12 having a trigger output terminal 15 ₂ that outputs a trigger signal at the time of the operation.

[Operation] In the variable display image enlargement projection device configured as described above, the display image carrier is mounted on the carrier mounting portion, and the display image of the display image carrier is Project onto the opposite projection surface.

In addition, when a plurality of devices are arranged facing the projection surface, the trigger input terminal and trigger output terminal of each device are connected in sequence, and the trigger output of the previous device sequentially operates the subsequent device. For example, by attaching a display image carrier of each device with a slightly shifted movement, it is possible to give movement to the sequentially projected images and create an animation-like display.

At this time, the projection time of the projection image of each of the devices projected onto the projection plane is set for each device, and furthermore, the magnification of the projected image is also determined for each device.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG.
and the power supply control means 1 built into the unit 1.
It consists of 2.

As shown in the figure, the projector unit 1 includes a casing 2 suspended from the other end 21 of a support rod 9 which has a mounting bracket 21 at one end 20 that is fixed to a support member, and the casing 2 and a lens surface 8'. and a projection lens 8 suspended from one end side 20 of the support rod 9 so as to face each other.

The casing 2 is provided with a carrier attachment part 5 on a surface facing the lens surface 8', to which a display image carrier 4 such as a slide film can be detachably attached, and a display image carrier to which the carrier attachment part 5 is attached. An opening 3 is formed on the opposing surface facing the opening 3 . On the other hand, inside the casing 2, there is a light source 6 such as a krypton lamp, and a light source 6 such as a krypton lamp.
The device includes a parabolic reflector 7 that reflects the emitted light emitted from the aperture 3 into substantially parallel light toward the aperture 3, and a power supply control means 12.

As shown in FIG. 2, the power supply control means 12 includes a power supply circuit for the light source 6 of the projector unit 1, a lamp drive circuit 22 consisting of a timer circuit such as a flip-flop that turns on the light source 6 for a set time, and
It consists of a setting device 13 that variably sets the on time of each timer circuit by a setting knob 14, and controls the operation and operation time of the light source 6 of the projector unit 1 in a variably setting manner.

Furthermore, the power supply control means 12 has a trigger input terminal 15 ₁ that operates the lamp drive circuit 22 by a trigger input, and when the lamp drive circuit 22 is turned off.
The trigger output terminal ₁₅₂ outputs a trigger output.

Also, supported on one end 20 side of the support rod 9,
The projection lens 8 that enlarges and projects the display image on the display image carrier 4 is adjustable in the front-rear direction indicated by arrow A and in the angle direction inclined with respect to the opposing surface of the casing 2 indicated by arrow B. The projection angle, focus, projection distance, magnification, etc. of the projected image on S can be easily changed.

This embodiment is configured as described above,
When this projection device is used alone, the display image carrier 4 is mounted on the carrier mounting portion 5, and the lamp drive circuit 22 of the power supply control means 12 is activated to display the carrier image of the display image carrier 4 on the opposing projection surface. Display.

Another method of use is to use a plurality of projector units 1 facing a wall or a screen S installed on a wall, as shown in FIG. In this case, each projector unit 1 is fixed to a support member such as a ceiling using a mounting bracket 21, and the optical axis L of each unit 1 is directed in one direction of the screen S (from end B to end A in the embodiment).
Adjust the mounting location and direction so that they shift sequentially. In this way, in this projector unit 1, the projection lens 8 and the casing 2 on which the display image carrier 4 is attached can be fixed to the support member at the same time using the mounting bracket 21, so installation is easy. Settings are also easy.

Next, after adjusting the projection lens 8 of each projector unit 1 and arbitrarily determining the magnification of the projected image so as to obtain the best projection effect, the optical axis L is aligned along one direction of the screen S. Trigger input terminal 15 ₁ and trigger output terminal 1 between the arranged projector units 1
5 and ₂ are connected in a ring shape as shown in FIG.
The lamp drive circuit 22 detects that the lamp drive circuit 22 of the projector unit 1 in the previous stage is turned off from on, and its timer circuit is turned on for the time set by each setting device. The projector units 1 are sequentially driven in circulation.

In this way, this projection device has the power supply control means 12 equipped with the trigger input/output terminals 15 ₁ and 15 ₂ built into the casing 2 of the projection unit 1, so that connections between a large number of devices arranged can be easily performed. be able to.

In this way, each projector unit 1 that is ready for projection is equipped with a slide film as a display image carrier 4 on which, for example, a picture of a horse with its legs in slightly different positions is recorded, and each projector unit 1 is compared. If the rotation is driven sequentially at short intervals, enlarged projected images of the horse with slightly different leg positions will be projected on the screen S from the b end to the a end, with a slight shift. A clear, continuous animation-like projected image of a horse galloping across the screen S from end B to end A is repeatedly projected, giving a strong impact to the viewer.

Also, at this time, this display increases the magnification of the projected image as it approaches the a end, increasing the size of the displayed horse, etc., to create a sense of perspective and provide a highly expressive display. You can also do it like this.

Furthermore, at this time, by increasing the number of projector units 1, the interval between the projection images projected onto the screen S is reduced, and the operating time of each projector unit 1 is shortened.
By switching the projected images quickly, it is possible to display continuous projected images that resemble smooth animation.

In addition, if slide films of landscape photographs of different places, photographs of different people, illustrated characters, etc. are attached to each projector unit, and the slide films are sequentially cycled at relatively long intervals, such as one minute or more, those different displays can be displayed. The image is sequentially enlarged and projected while moving on the screen S.

In this way, with this projection device, the highly expressive animation-like display can be changed simply by replacing the display image carrier 4 such as a slide.
Maintenance requires no effort or cost.

Furthermore, by shifting the focal points of a plurality of projector units from each other, the displayed image can be enlarged and projected onto different positions on the uneven screen S.

The casing 2 can be separated near the front edge of the reflecting mirror 7 for purposes such as replacing the light source 6.

Further, the projector unit 1 is not limited to the structure shown in FIG. 1, and the projection lens 8 is telescopic type like a normal telescope or screw type like a telephoto lens of a camera. It may be attached to the

Further, in the embodiment, a case has been described in which the optical axis L of each of the devices arranged facing the screen S is shifted, but the invention is not limited to this.
For example, as shown in FIG. 5, the optical axes L may be aligned.

〔effect〕

The present invention is constructed as described above, and by incorporating a power supply control means having a trigger input/output terminal into the projector unit, it is possible to arrange a large number of units and to display them in addition to projecting a display by a single unit. By simply connecting the trigger input/output terminals of each unit, the units can be activated in sequence and the projected image can be projected repeatedly in a moving image, making it possible to perform a wide variety of projection displays, making it ideal for advertising and promotions. Ideal for use as a projector for interior decoration.

Further, since the moving images can be easily connected to each other, it is easy to make the moving images smooth by increasing the number of units.

[Brief explanation of the drawing]

FIG. 1 is a partial vertical sectional view showing an embodiment of the present invention, FIG. 2 is a block diagram of the power supply control means, and FIG.
4 is a block diagram showing the connection of the power supply control means of each of the variable display image enlargement projection apparatuses shown in FIG. 3, and FIG. 5 is an action diagram showing another embodiment. 1...Projector unit, 2...Casing, 3
...Opening, 4...Display image carrier, 5...Carrier attachment part, 6...Light source, 7...Reflector, 8...
Projection lens, 12... Power control means, 13... Setting device, 15 ₁ ... Trigger input terminal, 15 ₂ ... Trigger output terminal, 22... Lamp drive circuit.

[Claims]

1. A light source for projecting light, a holding part that holds a slide film, a projection optical system that projects an image of the slide film onto a screen using a light beam emitted from the light source, and a projection optical system that projects an image of the slide film onto a screen due to thermal deformation of the slide film caused by the light source. and an adjusting means for adjusting the focus of the projection optical system based on the output of the focus detecting means. A slide projector featuring