JP2016136206A - Projection method and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide projection method and apparatus enabling projection at an illuminance that is as high as possible, using a projector with a low illuminance.SOLUTION: A projection method uses a plurality of projectors 2 and a single object (S) to be projected, and superimposes images projected from the plurality of projectors to project the images on the single object to be projected.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a projection method and apparatus for projecting an image projected from a projector to a target position.

This type of projection apparatus is disclosed in Patent Document 1, for example.
In this projection apparatus, a projector is arranged opposite to a signboard installed outdoors, and an image is projected onto the signboard by the projector.

  The amount of information notified by the signboard can be greatly increased by changing the advertising content on the signboard with such a projection device.

JP 2005-266190 A

Incidentally, in recent years, video projection methods called projection mapping and installation have been used.
In this projection mapping and installation, the object to be projected is often a large-scale structure such as a building, and the projected area tends to be huge.

  Accordingly, when performing projection mapping or installation, a large illuminance is required, but there is a problem that the conventional projector described above cannot cope with it.

  On the other hand, although there is a projector with high illuminance that enables projection mapping and installation, it is an extremely large and expensive device, and it is difficult to perform projection mapping and installation easily.

  The present invention has been made in view of such conventional problems, and it is an object of the present invention to provide a projection method and apparatus capable of projecting high illuminance as much as possible using a low illuminance projector. .

  In order to solve the above-described problem, the projection method of the present invention uses a plurality of projectors and a single projection object, and superimposes images projected from the plurality of projectors, thereby superimposing the single projection object. Projecting on the body.

  With such a configuration, a plurality of images projected from each projector are superimposed and projected on the projection object, and the illuminance of the image on the projection object is increased.

  Here, by making the images projected from the projectors the same image, the effect of further increasing the illuminance can be obtained.

  In this way, since the required illuminance is realized by a plurality of projectors, the illuminance required for each projector can be reduced, and as a result, the necessary illuminance can be secured using an inexpensive projector. Can do.

  Further, the projection device of the present invention comprises a plurality of projectors and a plurality of video transmission means that are mounted on each of these projectors and transmit the images projected from these projectors to positions separated from the projectors, Each of these video transmission means converts a video projected while being enlarged from the projector into a non-enlarged video with a light beam having a predetermined cross section, and the video converter connected to the video converter. The non-enlarged image converted in step (b) is transmitted in a state where it is shielded from external light, and the non-enlarged image is attached to the terminal portion of the image guide tube and transmitted to the terminal portion of the image guide tube. And a plurality of projectors that project the enlarged images, and project the images projected by the respective projectors to the same projection target. Characterized in that it is adapted to project superimposed on top.

  With this configuration, an image output from the projector is converted into a non-enlarged image by the image converter to be a predetermined light flux, and then guided to the projector through the image guide tube. , And projected through this projector.

  Therefore, the installation positions of the projectors of the projectors can be adjusted by the video guide tubes connected to the projectors, and the projectors can be positioned at a close distance.

  Thereby, the positional relationship between each projector and a single projection object is made uniform, and the deviation of the image projected from each projector projected onto the projection object is suppressed. be able to.

  Thus, according to the projection apparatus of the present invention, the above-described projection method of the present invention can be effectively implemented.

In addition, since the projector and the projector can be installed apart from each other, the projector can be installed in a place where a cooling effect is easily obtained in a state where the projector is installed at a position suitable for projection. it can.
Alternatively, it can be installed in a place that is less susceptible to climatic conditions.

  As a result, it is possible to suppress a decrease in the performance of the projector due to overheating, or it is possible to suppress the occurrence of condensation in the projector.

  On the other hand, by arranging the projector indoors in the building, arranging the video guide tube through the outer wall of the building, and connecting the projector to the indoor side end of the video guide tube, The projector can be positioned in a well-conditioned space to efficiently suppress overheating.

  In addition, since the existing building equipment is used, the rise in the protection equipment for the projector can be minimized.

  Further, the projection apparatus of the present invention may be configured such that a casing is provided so as to surround the plurality of projectors, and an air conditioner is provided in the casing.

  By adopting such a configuration, it is possible to prevent the projection apparatus from being overheated or dewed in a situation where the projection apparatus has to be used outdoors, and to ensure a satisfactory operation.

  Further, a plurality of the video guide tubes are connected so that their axis intersects, and the non-enlarged video guided from one video guide tube is sent to these connecting portions in the axial direction of the other video guide tube. It can be set as the structure which provides a direction changer.

With such a configuration, a video transmission path can be set freely.
Therefore, for example, the projection apparatus can be installed avoiding obstacles, and the application range can be greatly expanded.

According to the projection device of the present invention, even if the illuminance of the projected image is limited, the illuminance can be increased by using a plurality of the projectors and superimposing the images projected from these projectors. .
As a result, it is possible to realize projection mapping and installation that require high illuminance while suppressing a rise in equipment.

1 shows a first embodiment of the present invention and is a perspective view showing an outline of a configuration of a projection apparatus. FIG. 1 is a front view of a projection apparatus according to a first embodiment of the present invention. 1, showing the first embodiment of the present invention, is an exploded view of video transmission means. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view illustrating an operation of a first embodiment of the present invention. The 2nd Embodiment of this invention is shown and it is a side view for demonstrating an action | operation. 3 shows a third embodiment of the present invention and is a longitudinal sectional view of a projection apparatus. FIG.

  First, prior to the description of the projection method of the present invention, a first embodiment of a projection apparatus for suitably carrying out the method will be described with reference to FIGS.

  In FIG. 1, reference numeral 1 denotes a projection apparatus according to the present embodiment. The projection apparatus 1 is mounted on a plurality (four in the present embodiment) of projectors 2 and each of these projectors 2. A plurality of video transmission means P for transmitting the video projected from the projector 2 to a position separated from the projector 2, and each of these video transmission means P is enlarged from the projector 2 as shown in FIG. However, the image converter 3 that converts the projected image into a non-enlarged image having a light beam of a predetermined cross section, and the non-enlarged image converted by the image converter 3 connected to the image converter 3 The image guide tube 4 that transmits in a state shielded from external light, and the non-enlarged image that is attached to the terminal portion of the image guide tube 4 and transmitted to the terminal portion of the image guide tube 4 The projector 5 that projects while enlarging an image, and the direction converter 6 that changes the guide direction of the non-enlarged video guided by the video guide tube 4, and the plurality of projectors 5 are respectively The image projected by the projector 5 is superimposed on the same projection object and projected.

  The projector 2 includes a projection lens 7 for enlarging and projecting an image sent from a personal computer (not shown) (see FIG. 3), and the image converter 3 is connected to the projection lens 7 via a coupler 8. It is like that.

  The video converter 3 is constituted by a lens having an optical characteristic opposite to that of the projection lens 7 and is connected to the video guide tube 4 via a coupler 9 provided at one end of the video guide tube 4. It is like that.

The video guide tube 4 has an inner diameter that does not cause interference with the non-enlarged video that travels straight, and is formed of a metal or resin having a small amount of thermal expansion and contraction and thermal conductivity.
The image guide tube 4 is made of a light-shielding material to prevent outside light from affecting the non-enlarged image passing through the inside.

  The projector 5 is constituted by a lens having substantially the same optical characteristics as the projection lens 7 attached to the projector 2, and the video guide tube 4 or the direction via a coupler 10 provided at one end. It is connected to the converter 6.

  In this embodiment, the direction changer 6 uses an elbow tube bent at 90 °, and a mirror 11 for bending the incident non-enlarged image by 90 ° is mounted on the inside thereof. .

  Couplers 12 and 13 are provided at both ends of the direction changer 6 so that the video guide tube 4 or the projector 5 is connected via the couplers 12 and 13. It has become.

  A plurality of the video guide tubes 4 and the direction changers 6 are used as necessary.

  As shown in FIGS. 1 and 2, the projectors 5 connected to the projectors 2 using such video transmission means P are positioned in close proximity to each other.

  As described above, the projection directions of the projectors 5 positioned close to each other are set so that the respective focal points become a single focal point F as shown in FIG.

  The projection apparatus 1 according to the present embodiment configured as described above performs projection on the screen S as the projection target installed at the focal position (focal point F) of each projector 5.

  Images projected from the respective projectors 2 are guided to the respective projectors 5 by the respective image transmission means P, and from these projectors 5 to the screens S arranged to face each other as shown in FIG. Projected.

  Here, as described above, the screen S is positioned on the single focal point F on which the projectors 5 are focused. Thus, the screens S are projected from the respective projectors 5. Are projected on the screen S so as to overlap each other.

Therefore, the light amount of the image projected from each projector 5 is integrated on the screen S to become a large light amount.
As a result, the illuminance of the image on the screen S is much larger than the illuminance of the image obtained by the single projector 2.

  By obtaining a high-illuminance video in this way, it can be applied to projection mapping and installation where a high-illuminance video is required.

  In addition, since a plurality of low-illuminance and low-priced projectors 2 can be combined to generate a high-illuminance image, the cost of equipment necessary for performing the above-described projection mapping and installation can be reduced.

On the other hand, the projector 2 may affect the projection function due to heat generated by the projector 2 or condensation due to a temperature difference between the inside and outside of the apparatus.
As a countermeasure, it is necessary to lower the temperature of the projector 2 and its surroundings.

  In the present invention, as described above, the projector 2 and the projector 5 are connected to each other by the video transmission means P, and the temperature of the projector 2 and its surroundings can be adjusted using this special configuration. Is possible.

A specific example of such temperature adjustment will be described with reference to FIG.
In this example, the projection apparatus 1 is installed in a building provided with an air conditioning facility C.

  That is, a through-hole is formed in the outer wall of the building indicated by symbol B in FIG.

  Then, the video transmission means P is inserted through the void tube 14, the projector 2 is connected to the indoor end, and the projector 5 is connected to the outdoor end.

By adopting such a configuration, while projecting to the outside through the video transmission means P, the air conditioner C provided in the building is used to project the projector 2 and the ambient air temperature. Can be adjusted.
Therefore, temperature adjustment using the existing air conditioning equipment C in the building is possible.
This is realized by using the video transmission means P as a constituent element in the projection apparatus 1 of the present invention.

On the other hand, it is assumed that the projection apparatus 1 is installed and used outdoors.
For example, as shown in FIG. 6, temperature adjustment in this case is performed by using a casing 21 whose interior is vertically partitioned by a partition wall 20 and incorporating the projector 2 and the air conditioner 22 in the casing 21. Can be done.

  That is, the plurality of projectors 2 are installed above the partition wall 20 in the casing 21, and the video transmission means P connected to the projectors 2 protrudes outside through the side wall of the casing 21. Let me.

  In addition, an internal heat exchanger 22a and an external heat exchanger 22b are installed in the lower part of the casing 21.

  Further, a ventilation hole 20a that connects the lower part and the upper part of the casing 21 is formed in the partition wall 20, and a blower fan 23 is installed so as to face the ventilation hole 20a.

  Then, the air cooled by the air conditioner 22 is sent to the upper part of the partition wall 20 by the blower fan 23 and the vent 20a to cool the projector 2 and the surrounding air.

  The air used for cooling in this way is discharged to the outside through the exhaust port 21 a formed above the side wall of the casing 21.

  Note that the shapes, dimensions, and the like of the constituent members shown in the embodiment are merely examples, and can be variously changed based on design requirements and the like.

DESCRIPTION OF SYMBOLS 1 Projector 2 Projector 3 Video converter 4 Video guide tube 5 Projector 6 Directional converter 7 Projection lens 8 Coupler 9 Coupler 10 Coupler 11 Mirror 12 Coupler 13 Coupler 14 Void tube 20 Partition wall 20a Vent 21 Casing 21a Exhaust 22 Air conditioner 22a Internal heat exchanger 22b External heat exchanger 23 Blower fan B Outer wall C Air conditioning equipment P Video transmission means S Screen (projected object)

Claims (7)

  A projection method characterized by using a plurality of projectors and a single projection object, superimposing images projected from the plurality of projectors, and projecting the images onto the single projection object.   The projection method according to claim 1, wherein images projected from each of the plurality of projectors are the same image.   A plurality of projectors, and a plurality of video transmission means that are mounted on each of the projectors and that transmit images projected from these projectors to positions separated from the projectors. A video converter for converting an image projected while being enlarged from the projector into a non-enlarged image having a light beam having a predetermined cross section, and the non-enlarged image converted by the image converter connected to the image converter. A video guide tube that transmits in a state shielded from external light, and a projection that is attached to the terminal portion of the video guide tube and projects the non-enlarged image transmitted to the terminal portion of the video guide tube while enlarging it And the plurality of projectors project the images projected by the respective projectors by superimposing them on the same projection object. Projection apparatus characterized by being made.   The projection apparatus according to claim 3, wherein the plurality of projectors project the same image.   The video guide tube is disposed through the outer wall of the building, the projector is connected to an indoor side end of the video guide tube, and the projection is performed on an outdoor side end of the video guide tube The projector according to claim 3, wherein a projector is connected, and the projector projects onto the projection object installed outdoors.   The projection apparatus according to claim 3, wherein a casing is provided so as to surround the plurality of projectors, and an air conditioner is provided in the casing. A plurality of the video guide tubes are connected so that their axis lines intersect, and the direction change is made so that the non-enlarged image guided from one guide tube is sent to these connecting portions in the axial direction of the other guide tube. 7. A projection apparatus according to claim 3, further comprising a device.