JP2007322820A - Projector and projector apparatus using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide projectors that can be arranged one on or below another in a stack, automatically recognize the disposition in which they are arranged one on or below another, and display bright projection images on the screen, and to provide a projector apparatus using two such projectors. <P>SOLUTION: The projector apparatus has a first switch 31 disposed on the upper face 21 of a case 2 and a second switch 71 disposed on the under face 22 thereof. When the first switch 31 is turned on, an image generating means 12 generates a combination of images so as to project on the screen an image to be projected and a black image to be connected to the lower part of the image. When the second switch 71 is turned on, the image generating means 12 generates a combination of images so as to project on the screen an image to be projected and a black image to be connected to the upper part of the image. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a projector that projects an image on a screen, and in particular, a projector capable of projecting images from a plurality of projectors on a single screen, and a projector device that uses two such projectors in a stacked manner. It is about.

  A projector that projects an image on a screen includes a light source, an optical engine that converts the light emitted from the light source into an image, and a zoom for enlarging and projecting the image output from the optical engine on the screen. It has a lens. In recent years, projectors are increasingly used for home theaters and classrooms. Compact and lightweight projectors are widely used because of their good portability and low price.

  The small and light projector projects an image on a small screen in a small room such as a home theater or classroom, and can project an image with sufficient brightness when projecting an image on the small screen. it can. On the other hand, when an image is projected on a large screen in a large room using the same projector, the image projected on the large screen may not be sufficiently bright. If the brightness is insufficient, the color of the projected image will be poor or the contrast will be low, making it difficult to view.

  Therefore, a method is adopted in which two (plural) small projectors as described above are stacked and the same image is projected onto one screen from each projector. According to this method, the images from the two projectors are projected on the screen, and the apparent brightness of the images becomes brighter (see JP-A-11-258565, etc.).

  Also, images from two projectors are complementarily imaged on a screen using a reflection mirror to compensate for brightness (see Japanese Patent Application Laid-Open No. 5-323259). Images from two projectors Have also been proposed (Japanese Patent Laid-Open No. 8-62565).

  Further, the invention described in Japanese Patent Application Laid-Open No. 2002-77778 projects a plurality of partial images generated by a plurality of projector apparatuses so as to partially overlap each other and draws one image on one screen. Has also been proposed.

JP 11-258565 A JP-A-5-323259 JP-A-8-62565 JP 2002-77778 A

  However, in the case of stacking two small projectors and projecting the same image emitted from each projector onto one screen, there is no adjustment so that the images projected on the screen from two small projectors are accurately overlapped. It must be troublesome. In addition, when a slight vibration or impact is applied, the projector may move, and the accuracy of overlaying images projected on the screen may be reduced, resulting in an image that is difficult to see.

  The invention described in Japanese Patent Application Laid-Open No. 11-258565 is for stacking projectors up and down, and the projector disposed on the upper side and the projector disposed on the lower side must be adjusted separately. It takes time and effort.

  In the invention described in JP-A-5-323259, a reflecting mirror must be prepared in addition to the projection apparatus, and in the invention described in JP-A-8-62565, a polarizing beam splitter is prepared in addition to the projection apparatus. I have to do it. In addition, the positions of the reflecting mirror, the polarizing beam splitter, and the projection device must be set accurately, which is troublesome to handle.

  Furthermore, in the invention described in Japanese Patent Application Laid-Open No. 2002-77778, images generated by a plurality of projectors are projected onto a screen so as to partially overlap, and the brightness of the overlapped portion is adjusted. It takes time to adjust the height.

  Therefore, the present invention can be used by stacking up and down, and a projector capable of automatically matching a part of the projected image from each projector onto the screen with high accuracy and displaying a bright projected image on the screen, and the projector. An object is to provide a projector apparatus using two projectors.

  In addition, the present invention can be used by being stacked one above the other, and can automatically recognize that it is arranged above or below, and accordingly, two projectors that can be handled easily and two such projectors are used. An object is to provide a projector device.

  It is another object of the present invention to provide a projector that can be disposed both above and below, and that can be easily handled, and a projector device that uses two such projectors.

  Furthermore, the present invention provides a projector device capable of displaying a bright projected image on a screen at a lower cost than a large projector capable of projecting substantially the same projected image by projecting images by stacking small projectors vertically. The purpose is to do.

  In order to achieve the above object, the present invention provides a projector having a case, video generation means for generating a video disposed inside the case, and legs disposed on a lower surface of the case, The projector has a first switch provided on the upper surface and a second switch provided on the lower surface, and the image generation means of the projector into which the first switch has been connected is connected to the image to be projected and the lower part thereof. The image is generated so that the black image is projected on the screen, and the image generating means of the projector in which the second switch is turned on projects the image to be projected and the black image connected to the upper part on the screen. Thus, the video is generated.

  According to this configuration, when either the first switch or the second switch is turned on, the projector automatically automatically displays the image to be projected and the black image to be projected. It can be projected on the screen connected to the top or bottom.

  A projector apparatus that includes two projectors having the above-described configuration, stacks up and down so that the optical axes of projection images projected from the two projectors are parallel, and simultaneously projects images on a screen. The second switch formed on the lower surface of the projector disposed is turned on by the projector disposed below, and the first switch formed on the upper surface of the projector disposed below is disposed by the projector disposed above. The images formed by the two projectors are overlapped with the images to be projected on the screen.

  According to this configuration, by arranging the two projectors stacked one above the other, it is possible to automatically recognize that the projectors are up or down. Further, the projector that has been recognized as being above generates a black image connected to the image to be projected. Further, the projector recognized as being below generates a black image connected to the image to be projected. By projecting the image generated by each projector onto the screen, the image to be projected generated by each projector can be displayed in an overlapping manner.

  That is, the projected images projected from the two projectors stacked one above the other can be automatically superimposed, and a bright projected image can be displayed on the screen.

  Further, it is not necessary to make fine adjustments or change settings when stacking the projectors, and it is possible to easily display a bright projected image on the screen.

  Furthermore, since the projector can be arranged either above or below, it is possible to brighten the projected image on the screen easily and inexpensively.

  The said structure WHEREIN: The said 1st switch and the said 2nd switch may be provided in the innermost part of the engagement recessed hole formed in the upper surface and lower surface of the said case. The first switch and the second switch may be push button switches, and the first switch input means and the second switch input means may be bosses protruding from the upper surface and the lower surface of the case, respectively. Furthermore, a part of the leg portion may be used as the second switch input means.

  In order to achieve the above object, the present invention can be configured as follows: a rectangular parallelepiped case, a video generation unit arranged inside the case to generate a video, and generated by the video generation unit A projection lens for enlarging and projecting the image on a screen, and legs provided at three points on the lower surface of the case, one of the legs is a fixed leg member, and the other two are lengths. Projector apparatus comprising two projectors that are adjustable long leg members that can be adjusted, and stacking the two projectors vertically so that the optical axes of the projected images are parallel, and simultaneously projecting images onto the screen The image projected on the screen forms an image area where the projection images projected from the two projectors overlap and a non-image area where the projection images do not overlap. The upper surface of the case has a pair of first bosses that are integrally projected from the upper surface, and a pair of concave holes in which the first push button switch is disposed at the innermost portion. The lower surface has a second boss and a pair of recesses in which the second push button switch is disposed at the innermost portion. When the projectors are stacked one above the other, By adjusting the variable length leg member to be the shortest and stacking it on the lower projector, the distal ends of the fixed leg member and the second boss of the upper projector are formed in the concave hole. The first push button switch is inserted and the pair of first bosses of the lower projector is inserted into the pair of recesses of the upper projector so that the second push button switch is pressed and the first push button is pressed. The image generation means of the projector whose button has been pressed generates an image so that an image to be projected on the image area and a black image are projected on a non-image area connected to the lower part of the image area, and The image generation means of the projector having pressed the second push button switch projects the same image as the image to be projected onto the image area and a black image onto the non-image area connected to the upper part of the image area. A projector apparatus that generates an image.

  In order to achieve the above object, the present invention can be configured as follows: a rectangular parallelepiped case, a video generation unit arranged inside the case to generate a video, and generated by the video generation unit Two projectors having a projection lens for enlarging and projecting the image on a screen, and a leg portion provided on the lower surface of the case and having three leg members for supporting the case; A projector device capable of stacking up and down projectors so that the optical axes of the projected images are parallel and projecting images onto the screen at the same time, the images projected on the screen are the two projectors An image area where the projected images projected from the projector overlap and a non-image area where the projected images do not overlap are formed, and the upper surface of the case is formed from the upper surface. A pair of bosses projecting physically, and three concave holes into which the legs of the projector disposed at the top are inserted when the projector is placed one above the other, The lower surface of the case has a pair of recesses into which the ends of the pair of bosses of the projector disposed at the bottom when the projectors are stacked one above the other. A first push button switch is disposed at the innermost part of the hole, and a second push button switch is disposed at the innermost part of the recess. Two first push button switches of the upper projector are simultaneously pressed by the legs of the upper projector, and the second push button switch of the upper projector is 2 by the boss of the lower projector. The image generation means of the projector that is pressed simultaneously and the first push button switch is pressed projects an image to be projected onto the image area and a black image onto a non-image area connected to the lower part of the image area. The image generation means of the projector that has generated the image and the second pushbutton switch is pressed is the same image as the image to be projected on the image area and a non-image connected to the upper part of the image area A projector apparatus that generates an image so that a black image is projected onto an area.

  According to the present invention, a projector that can be used by being stacked up and down, automatically matches a part of the projection image from each projector to the screen accurately, and displays a bright projection image on the screen, and the projector. A projector apparatus using two projectors can be provided.

  Further, according to the present invention, the projector can be used by being stacked up and down, can automatically recognize that it is arranged above or below, and can easily handle the projector, and two projectors can be used. It is possible to provide a projector device.

  Furthermore, according to the present invention, it is possible to provide a projector that can be disposed both above and below, and that can be easily handled, and a projector device using two such projectors.

  In addition, according to the present invention, a projector device that can display a bright projected image on a screen at a lower cost than a large projector that can project substantially the same projected image by projecting images by stacking small projectors on top and bottom. Can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a diagram of a projector apparatus in which two projectors according to the present invention are stacked one above the other. As shown in FIG. 1, the projector apparatus A is a projection apparatus that projects an image on a screen Sc, and is stacked on a first projector 1a installed on an installation table Ta such as a table and the first projector 1a. And a second projector 1b. The first projector 1a and the second projector 1b have the same configuration, and for convenience, the configuration of the first projector 1a will be mainly described.

  2 is a plan view of the projector used in the projector apparatus shown in FIG. 1, FIG. 3 is a bottom view of the projector shown in FIG. 2, and FIG. 4 is a side sectional view of the first projector shown in FIG. As shown in FIG. 4, the first projector 1 a is disposed inside the case 2, the light source 11 that emits light, the optical engine 12 that generates an image from the light emitted from the light source 11, and the optical engine 12. And a projection lens 13 for enlarging and projecting the image generated in (1) onto the screen Sc.

  As shown in FIG. 2, the upper surface 21 of the case 2 is provided with two engagement concave holes 3, 3 and cylindrical first bosses 4, 4 protruding integrally from the upper surface. Yes. The first switches 31 and 31 (but not limited to the first tact switches 31 and 31 here) are disposed in the innermost portions of the engagement concave holes 3 and 3.

  As shown in FIG. 3, the lower surface 22 of the case 2 includes a leg portion 5, a second boss 6 disposed on the lower surface, and two concave portions 7 and 7 disposed on a diagonal line. . Second switches 71 and 71 (but not limited to the second tact switches 71 and 71 here) are provided at the innermost part of the recesses 7 and 7.

  The leg portion 5 includes a first leg member 51 and a second leg member 52 which are arranged symmetrically with respect to the front side (side close to the projection lens 13) with respect to the central axis, and the first leg portion 51 and the second leg member 52 on the back side on the central axis. It has the 3rd leg member 53 arrange | positioned so that it may become equidistance with the 2nd leg part 52. FIG.

  Screws are formed on the first leg member 51 and the third leg member 53 of the leg 5, and the length from the lower surface 22 can be adjusted by turning. The second leg member 52 is fixed so that the height (length) is constant (see FIG. 4). For example, the first projector 1a can be tilted left and right by rotating the first leg member 51, and the first projector 1a can be tilted back and forth by rotating the third leg member 53.

  The two engagement recesses 3 and 3 formed in the upper surface of the case 2 are a first engagement recess 32 and a second engagement recess 32 into which the tip of the second leg member 52 of the projector disposed at the upper part is inserted. It has the 2nd engagement concave hole 33 in which the front-end | tip of the boss | hub 6 is inserted. The second boss 6 is formed shorter than the length of the second leg member 52. The difference between the depth of the first engagement concave hole 32 and the depth of the second engagement concave hole 33 is the same as or substantially the same as the difference between the length of the second leg member 52 and the length of the second boss 6. Is formed. Further, the first bosses 4, 4 protruding from the upper surface 21 of the case 2 are formed at positions where the tips are inserted into the recesses 7, 7 of the case 2 disposed at the top.

  When the first tact switches 31 and 31 are simultaneously pressed, the first projector 1a recognizes that another projector is stacked on the upper surface 21. On the other hand, when the second tact switches 71 and 71 are simultaneously pressed, the first projector 1a is recognized as being stacked on another projector.

  As shown in FIGS. 2 and 3, two first tact switches 31 and 31 and two second tact switches 71 and 71 are provided, and operate when both switches are pressed. In this way, it is possible to prevent malfunctions by recognizing only when two switches are pressed simultaneously.

  A procedure for stacking and arranging the first projector 1a and the second projector 1b will be described. First, the first leg member 51 and the third leg member 53 of the leg portion 5 of the second projector 1b are rotated so that the length becomes the shortest. In this state, the tip of the second leg member 5b of the second projector 1b is in the first engagement recess 32 of the first projector 1a, and the tip of the second boss 6 of the second projector 1b is the second engagement recess 33. The second projector 1b is stacked on the first projector 1a so as to be inserted into the first projector 1a.

  The second leg member 52 and the second boss 6 of the second projector 1b are inserted into the first engagement concave hole 32 and the second engagement concave hole 33 of the first projector 1a, so that the first projector 1a of the first projector 1a. The first tact switches 31, 31 provided at the innermost part of the engagement concave hole 32 and the second engagement concave hole 33 are simultaneously pressed. By pressing the first tact switches 31 and 31 at the same time, the first projector 1a is arranged with the second projector 1b stacked on top, that is, the first projector 1a is stacked below the second projector 1b. It is possible to automatically recognize that it has been placed.

  When the second projector 1b is placed over the first projector 1a, the tips of the first bosses 4 and 4 of the first projector 1a are in the recesses 7 and 7 formed on the lower surface 22 of the second projector 1b. Inserted. The second tact switches 71 and 71 provided at the innermost part of the recesses 7 and 7 of the second projector 1b are pushed to the tips of the bosses 4 and 4 of the first projector 1a. The second projector 1b can automatically recognize that the second tact switches 71 and 71 are pressed at the same time so as to be stacked on the first projector 1a.

  FIG. 5 shows a projected image when an image is projected on the screen using the projector apparatus shown in FIG. As shown in FIG. 1, the first projector 1a and the second projector 1b are stacked such that the optical axes of the images projected from the projectors 1a and 1b are parallel to each other. That is, the screen image R projected on the screen Sc simultaneously from the first projector 1a and the second projector 1b is projected from the upper part of the first projection image L1 projected from the first projector 1a and the second projector 1b. An image region R1 (shaded portion in FIG. 5) in which the lower portion of the second projected image L2 overlaps is formed.

  Further, a portion that does not overlap the second projection image L2 of the first projection image L1 (hereinafter referred to as the first non-image region R2a) is provided below the image region R1 of the screen image R, and a second portion is provided above the image region R1. A portion of the projected image L2 that does not overlap with the first projected image L1 (hereinafter referred to as a second non-image area R2b) is formed.

  FIG. 6A shows a projection image when the first projector is used alone, FIG. 6B shows a first projection image projected from the first projector of the projector apparatus shown in FIG. ) Shows a second projection image projected from the second projector of the projector apparatus shown in FIG. A projected image Te shown in FIG. 6A is an image when the first projector 1a or the second projector 1b is used alone, and projects a rectangular image of length a and width b on the screen Sc. .

  By arranging the second projector 1b in a stacked manner on the first projector 1a, the first tact switches 31, 31 of the first projector 1a are simultaneously pressed, and the first projector 1a is arranged below the second projector 1b. Recognize that At this time, as shown in FIG. 6B, the first projector 1a projects the projected image Te projected on the image area R1 of the screen image R in FIG. 5 and the first unprojected image projected on the first non-image area R2a. The optical engine 12 is adjusted so as to generate the first projection image L1 including L11. Although the first non-projected image L11 is not limited to this, here, an image that forms a black image (that is, a portion that is not irradiated with light from the light source) can be cited.

  By arranging the second projector 1b in a stacked manner on the first projector 1a, the second tact switches 71 and 71 of the second projector 1b are simultaneously pressed, and the second projector 1b is arranged above the first projector 1a. Recognize that At this time, as shown in FIG. 6C, the second projector 1b projects the projected image Te projected on the image area R1 of the screen image R in FIG. 5 and the second unprojected image projected on the second non-image area R2b. The optical engine 12 is adjusted so as to generate a second projection image L2 including L21. Similarly to the first non-projection image L11, the second non-projection image L21 forms a black image (that is, a portion not irradiated with light from the light source), but is not limited thereto.

  By stacking the first projector 1a on the second projector 1b, the optical engine 12 of the first projector 1a and the optical engine 12 of the second projector 1b are automatically adjusted. In this state, the first projected image L1 from the first projector 1a and the second projected image L2 from the second projector 1b are simultaneously projected on the screen Sc, so that the screen image R is displayed on the screen Sc. .

  At this time, as shown in FIG. 5, the image area R1 of the screen image R is vertical a2 and horizontal b, and the aspect ratio (aspect ratio) is a2 / b. The video shown in FIG. 6A is vertical a and horizontal b, and the aspect ratio is a / b. The video region R1 is a horizontally long image as compared to the image shown in FIG. 6A, but it is possible to project an undeformed image when projecting a horizontally long image such as a movie or HD broadcast. Further, even for an image with an aspect ratio of a / b, the upper and / or lower portions that do not significantly affect the content of the image may be removed, or an image with a vertically compressed image may be projected.

  Also, a black image is projected to the right and / or left of the image area R1, the image area R1 is adjusted so that the aspect ratio is a / b, and the image is enlarged to enlarge the size of the screen Sc. You may make it project by the magnitude | size suitable for. In this case, the image has to be enlarged larger, but since the images are projected from the two projectors 1a and 1b, a sufficiently bright image can be projected.

  FIG. 7 is a plan view of another example of the projector according to the present invention, and FIG. 8 is a bottom view of the projector shown in FIG. The projector shown in FIG. 7 has three engagement recesses 8 into which the tip of the leg is inserted on the top surface of the case 2 and the second boss provided on the bottom surface is omitted. The first projector 1a has the same configuration, and substantially the same parts are denoted by the same reference numerals.

  As shown in FIGS. 7 and 8, the upper surface 21 of the case 2 of the first projector 1 a is provided with an engagement concave hole 8 and cylindrical bosses 4, 4 protruding integrally from the upper surface 21. . The engagement concave hole 8 formed in the upper surface 21 of the case 2 is a first engagement concave hole 81 into which the first leg member 51 of the projector disposed at the upper portion is inserted when the projector is disposed at the upper portion. The second engagement concave hole 82 into which the second leg member 52 is inserted, and the third engagement concave hole 83 into which the third leg member 53 is inserted. In addition, first switches 84 and 84 (here, first tact switches 84 and 84) are disposed in the innermost portions of the second engagement concave hole 82 and the third engagement concave hole 83.

  When the projectors 1 shown in FIGS. 7 and 8 are stacked one above the other, the second leg member 52 and the third leg member 53 of the upper projector 1 press the first tact switches 84 and 84. As a result, the projector 1 arranged on the lower side can automatically recognize that it is arranged on the lower side. At this time, since it is not necessary to minimize the length of the leg member of the projector 1 disposed on the upper side, it is possible to easily stack them and to project a bright image on the screen.

  In the above embodiment, as an optical engine that generates a projected image, for example, a light source 11 using a DMD (Digital Mirror Device: registered trademark), a transmissive liquid crystal, a reflective liquid crystal, or the like. It is possible to widely adopt one capable of generating an image from the light of the light.

  By using the projector of the above embodiment, it is possible to project an image on the same screen from the projectors stacked one above the other without complicated fine adjustment, and the image of the overlapping portion (image area) of the projected image can be accurately You can superimpose well.

  In this way, it is possible to project a bright image on the screen by accurately superimposing the images in the image area without performing complicated operations.

  In addition, since the projectors of the above embodiments can be stacked without distinguishing between the top and bottom when stacking two pieces up and down, it is possible to save the trouble of checking the top and bottom and stacking when making a mistake in the top and bottom. A bright image can be projected on the screen with a simple operation.

  In each of the above-described embodiments, the tact switch is used as the first switch and the second switch. However, the present invention is not limited thereto, and a wide range of switches that can recognize that they are stacked are used. be able to. In addition, although it is assumed that the two are simultaneously pressed, it may be arranged so that no malfunction occurs, such as one or more.

  As mentioned above, although embodiment of invention was described concretely, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary.

  The present invention can be applied to a projector device for projecting an image on a screen.

2 is a projector device in which two projectors according to the present invention are stacked one above the other. It is a top view of the projector used for the projector apparatus shown in FIG. FIG. 3 is a bottom view of the projector shown in FIG. 2. FIG. 3 is a side sectional view of the first projector shown in FIG. 2. It is a figure of a projection image when an image is projected on a screen using the projector apparatus shown in FIG. FIG. (A) is a schematic diagram of a projected image when the first projector is used alone, and FIG. (B) is a schematic diagram of a first projected image projected from the first projector of the projector apparatus shown in FIG. FIG. 6C is a diagram showing an outline of the second projected image projected from the second projector of the projector apparatus shown in FIG. It is a top view of the other example of the projector concerning this invention. It is a bottom view of the projector shown in FIG.

Explanation of symbols

A, B Projector device 1a First projector 1b Second projector 2 Case 21 Lower surface 22 Upper surface 3 Engaging hole 31 First switch (first tact switch)
32 First engagement concave hole 33 Second engagement concave hole 4 First boss 5 Leg 51 First leg 52 Second leg 53 Third leg 6 Second boss 7 Recess 71 Second switch (second tact) switch)

Claims (7)

A rectangular parallelepiped case,
Video generation means arranged inside the case to generate video;
A projection lens for enlarging and projecting the image generated by the image generation means on a screen;
Two projectors, each having a leg portion provided at three points on the lower surface of the case, wherein one of the leg portions is a fixed leg member and the other two are variable length leg members whose lengths can be adjusted. Prepared,
A projector device capable of stacking the two projectors vertically so that the optical axes of the projected images are parallel, and simultaneously projecting images on the screen,
The image projected on the screen forms an image area where the projection images projected from the two projectors overlap and a non-image area where the projection images do not overlap,
The upper surface of the case has a pair of first bosses protruding integrally from the upper surface, and a pair of concave holes in which the first push button switch is disposed at the innermost portion.
The lower surface has a second boss and a pair of recesses in which the second push button switch is arranged at the innermost part,
When the projectors are stacked up and down, the variable length leg members of the projector disposed on the upper side are adjusted so as to be the shortest and are stacked on the lower projector so that the upper projector is disposed. The fixed leg member and the distal end of the second boss are inserted into the concave hole to press the first push button switch, and the distal ends of the pair of first bosses of the lower projector are connected to the upper projector. Inserted into the pair of recesses, and presses the second push button switch,
The image generation means of the projector whose first pushbutton switch has been pressed generates an image so that an image to be projected onto the image area and a black image are projected onto a non-image area connected to the lower part of the image area. In addition, the image generation means of the projector whose second push button switch has been pressed projects the same image as the image to be projected onto the image area, and a black image onto the non-image area connected to the upper part of the image area. A projector device that generates an image as described above. A rectangular parallelepiped case,
Video generation means arranged inside the case to generate video;
A projection lens for enlarging and projecting the image generated by the image generation means on a screen;
Two projectors having a leg portion disposed on the lower surface of the case and having three leg members for supporting the case;
A projector device capable of stacking the two projectors up and down so that the optical axes of projection images are parallel, and simultaneously projecting images on the screen,
The image projected on the screen forms an image area where the projection images projected from the two projectors overlap and a non-image area where the projection images do not overlap,
The upper surface of the case has a pair of bosses protruding integrally from the upper surface, and three concave holes into which the legs of the projector disposed at the upper part are inserted when the projector is placed one above the other. And
The lower surface of the case has a pair of recesses into which the ends of the pair of bosses of the projector disposed at the lower part are inserted when the projectors are stacked one above the other.
A first push button switch is arranged in the innermost part of two of the concave holes,
A second push button switch is arranged at the innermost part of the recess,
When the projectors are arranged one above the other, two first push button switches of the lower projector are simultaneously pressed by the legs of the upper projector, and the second push button switch of the upper projector Are pressed at the same time by the boss of the lower projector, and the image generation means of the projector whose first push button switch has been pressed has an image to be projected on the image area and a lower part of the image area. The image is generated so that a black image is projected on the non-image area connected to the image, and the image generation means of the projector whose second push button switch is pressed is the same as the image to be projected on the image area. A projector for generating an image so that a black image is projected on an image and a non-image area connected to the upper part of the image area apparatus. Case and
Video generation means arranged inside the case to generate video;
A projector having legs disposed on the lower surface of the case,
The case has a first switch provided on the upper surface and a second switch provided on the lower surface,
The image generation means of the projector in which the first switch is turned on generates an image so that the image to be projected and the black image connected to the lower part are projected on the screen, and the projector in which the second switch is turned on The image generating means generates the image so that the image to be projected and the black image connected to the image are projected on the screen. Two projectors according to claim 3 are provided,
A projector device that stacks up and down so that the optical axes of projection images projected from the two projectors are parallel, and simultaneously projects images on a screen,
The second switch formed on the lower surface of the projector disposed above is turned on by the projector disposed below, and the first switch formed on the upper surface of the projector disposed below is disposed above. Powered by the projector
An image formed by the two projectors, wherein the image to be projected overlaps on the screen.   5. The projector device according to claim 4, wherein the first switch and the second switch are provided in an innermost part of an engagement concave hole formed in an upper surface and a lower surface of the case.   The first switch and the second switch are push button switches, and the first switch input means and the second switch input means are bosses protruding from the upper surface and the lower surface of the case, respectively. The projector device according to claim 4.   The projector device according to claim 4, wherein a part of the leg is used as the second switch input unit.

Images