WO2015056295A1

WO2015056295A1 - Projection system

Info

Publication number: WO2015056295A1
Application number: PCT/JP2013/077954
Authority: WO
Inventors: 尾崎　勝
Original assignee: 株式会社ユナイテッドスマイルズ
Priority date: 2013-10-15
Filing date: 2013-10-15
Publication date: 2015-04-23

Abstract

Provided is a projection system that can be appreciated even in the state of peripheral light being present. The projection system, which is provided with a projector that projects an image and an affixing section that affixes a subject that is the subject of projection of the image, houses the projector and the affixing section in the same casing.

Description

Projection system

The present invention relates to a projection system that projects and displays images and images using a three-dimensional object as a screen.

Projection mapping that realizes a new video expression different from a flat screen by using a three-dimensional object as a screen is known (Patent Document 1). As one of the projection mappings, there is an architecture mapping that uses several high-intensity projectors and projects an image on a building or a large building. In architecture mapping, the distance between the projector and the building that projects the image is relatively large. In addition, since the audience who sees the image also sees from a distance, the angle to the building is shallow, and the difference in the projection distance with respect to the depth of the building is not large as a percentage. Moreover, since it implements outdoors, there exists a fault that it can perform only at night without sunlight.

JP 2013-118596 A

In contrast, desktop mapping has been proposed in which small projectors project images onto small desktop items. Desktop mapping projects images on small objects (objects) that can be placed on a desktop, and can be performed indoors.

In the architecture mapping described above, the top surface of the building cannot be seen because it is viewed as if looking up at the building that will be the screen. On the other hand, in desktop mapping, you can look down on the small item on which the image is projected, so you can see the top. In other words, in the case of architecture mapping, viewers see the building from a distance, so that the viewer sees the image they see as a “face”, whereas in desktop mapping, they can look at multiple faces of small items on which images are projected. Since it is possible, it is possible to give the viewer a “three-dimensional” feeling. As a result, desktop mapping has the advantage of better visual effects than architectural mapping.

However, since projection mapping projects images using a projector, it can only be viewed in an environment with little ambient light. Even when performing indoors as in desktop mapping, the entire room needs to be darkened to some extent. In addition, it is necessary to secure a projection distance according to the performance of the projector as the distance between the projector and the object on which the image is projected. Therefore, a certain amount of space is required to perform projection mapping. For these reasons, until now, projection mapping has been mostly performed as a transient event. Even in the case of a permanent display, it was usual to use a large projector with a large amount of light. In addition, since a showroom usually has a relatively bright space using ceiling lights and downlights, it has been difficult to always display in such a bright showroom.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a projection system (projection mapping system) that has a small area and can be always viewed.

The projection system according to the present invention is a projection system including a projector that projects an image and a fixing unit that fixes an object that is a projection target of the image, and the projector and the fixing unit are provided in the same casing. It is housed.

In the present invention, the projector for projecting the image and the fixing unit for fixing the object to be projected of the image are housed in the same housing. For this reason, once the projector and the object are set, there is no need to set them again. The exclusive area is the installation area of the chassis. Therefore, it can be installed in a relatively small place, and after installation, it is possible to always appreciate images.

The projection system according to the present invention is characterized in that the casing has a window part that allows the object to be visually recognized from the outside.

In the present invention, an image projected on the object can be viewed from the outside by providing a window part that allows the object to be visually recognized from the outside.

The projection system according to the present invention is characterized in that the window portion includes a plate glass and a light shielding film fixed to one surface of the plate glass.

In the present invention, by providing a light shielding film in the window portion, it is possible to view the image projected on the object from the outside while restricting the incidence of light from the outside.

The projection system according to the present invention is characterized in that the casing has a reflector that reflects an image emitted from the projector and projects the image onto the object.

In the present invention, since the reflecting plate for reflecting the image emitted from the projector and projecting it on the object is provided, it is possible to secure an appropriate projection distance between the projector and the object while reducing the size of the housing. It becomes possible.

The projection system according to the present invention is characterized in that the reflecting plate is a stainless steel plate having a mirror shape.

In the present invention, since the mirror-like stainless steel plate is used as the reflector, the reflectance is uniform on the entire surface of the plate, and a uniform image can be projected onto the object.
Also, by using a single reflecting surface without using a mirror, it is possible to prevent the image projected on the object from appearing double, to make the image appear sharper, and to maintain the resolution.

The projection system according to the present invention is characterized in that the angle at which an image is reflected is fixed so as to be changeable.

In the present invention, since the angle of reflecting the image on the reflector is fixed so that it can be changed, the projection angle of the image can be easily adjusted according to the position, size, and shape of the object. It becomes.

The projection system according to the present invention is characterized in that the casing has a limiting plate for limiting a projection range of an image emitted by the projector.

In the present invention, since the projection range of the image emitted by the projector is limited by the limiting plate, the image can be projected only on the object.

A projection system according to the present invention includes: an image storage unit that stores an image; and an image output unit that reads an image from the image storage unit and outputs the read image to the projector. The portion is housed in the housing.

In the present invention, since an image storage unit or the like in which an image to be projected is stored is also housed in the housing, it can operate in a stand-alone manner.

The projection system according to the present invention includes an audio storage unit that stores audio information, an audio output unit that reads audio information from the audio storage unit, converts the read audio information into an audio signal, and outputs the audio signal; And a speaker that outputs the sound, wherein the sound storage unit, the sound output unit, and the speaker are housed in the housing.

In the present invention, the voice storage unit that stores the voice information, the voice output unit that converts the voice information into the voice signal, and the speaker that outputs the voice signal as voice are housed in the housing, so that it can operate stand-alone. It becomes.

The projection system according to the present invention includes a wireless communication unit that performs wireless communication, and the wireless communication unit is housed in the casing.

In the present invention, it is possible to exchange and control data with the outside by providing the wireless communication unit. For example, it is possible to update image data and audio data from the outside, and to control the start / end of the projection operation.

In the present invention, since the projector can be stored in the housing and the object for projecting the image can be stored in the housing, the area necessary for installing the housing is ensured and the installation is performed once. Once completed, it is possible to view the video at all times thereafter.

It is a perspective view which shows one structural example of a projection system. It is a partial longitudinal cross-sectional view of a housing | casing. It is a partial longitudinal cross-sectional view of a housing | casing. It is a partial cross-sectional view of a housing | casing. It is a partial cross-sectional view of a housing | casing. It is a perspective view of an exhibition stand. It is a longitudinal cross-sectional view of the housing | casing to which the exhibition stand etc. were fixed. It is explanatory drawing for notionally showing operation | movement of a projection system. It is a perspective view which shows an example of a mask plate. It is a perspective view which shows an example of the projector side holder which comprises a mask holder. It is a perspective view which shows an example of the reflecting plate side holder which comprises a mask holder. It is a perspective view which shows an example of a mask holder. FIG. 9B is a plan view of the mask holder shown in FIG. 9A. It is a perspective view which shows an example of a reflecting plate. It is a perspective view which shows an example of a reflecting plate support part. It is a fragmentary longitudinal cross-sectional view of the housing | casing to which the exhibition stand etc. were fixed. It is a block diagram which shows the hardware structural example of a control apparatus. It is a perspective view which shows an example of a target object. It is a perspective view which shows an example of the target object in which the image was projected.

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

FIG. 1 is a perspective view showing one configuration example of the projection system 1. The projection system 1 includes a housing 10, a control device 20, a projector 30, an optical system 40, a wireless communication unit 50, an amplifier 60, a speaker unit 70, and an object 80.

The housing 10 has a vertically long rectangular parallelepiped shape. The top plate, bottom plate, and back plate of the housing 10 are made of metal, for example, an iron plate, a stainless steel plate, or the like. Each inner surface is painted black with matte black or black paint. The front glass and the side surface of the housing 10 are fitted with plate glass. An exhibition stand 17 (fixed portion) is fixed inside the housing, and an object 80 is installed on the display stand 17. The mela baking coating is a melamine resin baking coating. Screen painting is painting performed using screen printing technology.

The control device 20 reads an image stored in a content DB (Database) 21 (image storage unit, audio storage unit), generates an image suitable for the object 80 to be projected, and outputs the image to the projector 30. When an image suitable for the object 80 is stored in the content DB 21 in advance, the control device 20 may output the read image to the projector 30 as it is. The content DB 21 is composed of, for example, a hard disk, SSD (Solid State Drive).

Projector 30 projects the image received from control device 20 onto object 80. The optical system 40 plays a role of adjusting the image from the projector 30 so as to be projected at an appropriate position. The optical system 40 includes a mask plate 41 (restriction plate) and a reflection plate 42.

The object 80 is a three-dimensional object on which an image from the projector 30 is projected. The object 80 is preferably fixed to the display stand 17, but if the position of the object 80 does not easily shift, it may be installed without being fixed.

The wireless communication unit 50 is hardware that performs communication in accordance with a standard such as WiFi. The amplifier 60 amplifies the audio data associated with the image and outputs it to the speaker unit 70. The speaker unit 70 outputs sound.

2A and 2B are partial longitudinal sectional views of the housing 10. 3A and 3B are partial cross-sectional views of the housing 10. FIG. 2A shows the upper part of the housing 10, and FIG. 2B shows the lower part of the housing 10. FIG. 3A shows a front portion of the housing 10, and FIG. 3B shows a rear portion of the housing 10. Plate glasses 15 and 16 (window portions) are attached so that the front, right side, and left side of the housing 10 can be seen inside. The

plate glasses

15 and 16 are sandwiched and fixed by an outer frame and an inner fixed frame. The outer frame includes two outer frame members 111 and two outer frame members 112. The

outer frame members

111 and 121 are rod-shaped members having an L-shaped cross section. The outer frame member 111 is a member that extends up and down the casing 10. The outer frame member 121 is a member that extends to the left and right of the housing. The

outer frame members

111 and 121 are formed of a stainless steel plate or an iron plate.

The inner fixed frame includes fixed

frame members

131 and 132 and two fixed frame members 141. The fixed

frame members

131 and 132 are rod-shaped members having a hollow cross-sectional rectangular shape. The cross-sectional area of the fixed frame member 132 is larger than that of the fixed frame member 131. The fixed frame member 141 has a U-shaped cross section, but one of the plate-like portions facing substantially parallel is shorter than the other. The outer frame member 121 is a member extending from side to side. The fixed

frame members

131 and 132 are members extending vertically, and the fixed frame member 141 is a member extending horizontally. The fixed

frame members

131, 132, 141 are formed of an iron plate or a stainless steel plate.

A film is affixed to the surfaces of the

plate glasses

15 and 16. The purpose of the film is to reduce light incident from the outside to the inside of the housing 10. Another object is to prevent the face of a person who sees the image projected on the target part from being reflected on the glass. Cushioning materials 15a are provided on the end surfaces of the

plate glasses

15 and 16 for protection. The cushion material 15a is formed of a soft and durable material, such as polyethylene or 66 nylon.

As described above, since the

glass plates

15 and 16 are fitted on the front surface and the left and right side surfaces of the housing 10, it is possible to visually recognize the object 80 placed inside.
The fixed

frame members

131, 132, and 141 are formed of an iron plate or a stainless steel plate, but are not limited thereto, and may be formed of other metals. Further, if the strength condition is satisfied, it may be formed of a resin or the like.
Further, the plate glass may be a transparent plastic plate as long as a desired transmittance can be secured and the strength condition is satisfied.

FIG. 4 is a perspective view of the display stand 17. The display stand 17 has a substantially U shape when viewed from the side. The front is open. The display stand 17 is formed of a stainless steel plate or an iron plate. The display stand 17 is hollow. The projector 30, the optical system 40, and the like are accommodated in the upper portion 171 of the display stand 17. In the upper part 171 of the display stand 17, a lower opening 171a is provided in order to project an image from the projector 30 inside. In addition, an upper opening 171 b for accessing the optical system 40 is provided. In the side portion 172 of the display stand 17, the control device 20, the wireless communication unit 50, and the like are accommodated. In the lower part 173 of the display stand 17, an amplifier 60, a speaker unit 70, and the like are accommodated. The display stand 17 is painted in a matte black color by black melody baking, screen coating or the like so that light from the outside is not reflected.

FIG. 5 is a longitudinal sectional view of the housing 10 to which the display stand 17 and the like are fixed. The right side of FIG. 5 is the front surface. The display stand 17 having a substantially U shape when viewed from the side is fixed to the inside of the housing 10 with screws b1, b2, etc. so that the front is an opening. A projector 30 and an optical system 40 are accommodated in the upper part of the display stand 17. The wireless communication unit 50 and the control device 20 are housed inside the back side of the display stand 17. An amplifier 60 and a speaker unit 70 are accommodated in the lower part of the display stand 17. A plate glass 16 to which a film is attached is fitted on the front surface of the housing 10. In addition, arrangement | positioning of the projector 30 shown in FIG. 5, the optical system 40, etc. is an example, and is not restricted to this. Other arrangements may be used as long as the image can be appropriately projected onto the object and the necessary functions such as unnecessary projection light not leaking to the outside can be realized.

FIG. 6 is an explanatory diagram for conceptually showing the operation of the projection system 1. The control device 20 reads image data (still image or moving image) from the content DB 21. The control device 20 outputs the read image data to the projector 30. When the image data stored in the content DB 21 is general data, the control device 20 does not output the image as it is, but converts it into an image suitable for the object 80.

Control device 20 reads out audio data output in conjunction with image data from content DB 21. The control device 20 outputs the read audio data to the amplifier 60. The amplifier 60 converts the sound data into a sound signal and outputs sound through the speaker unit 70.

The light emitted from the projector 30 passes through the mask plate 41, is reflected by the reflecting plate 42, and is projected onto the object 80.

FIG. 7 is a perspective view showing an example of the mask plate 41. The mask plate 41 includes a main body portion 41a, a handle portion 41b, and an opening portion 41c. The main body portion 41a and the handle portion 41b are plate-shaped. The mask plate 41 is formed of a metal plate, for example, an iron plate. The plate-like portions of the main body portion 41a and the handle portion 41b are both painted with black mellar and are matte black. The handle portion 41b protrudes from the main body portion 41a from a predetermined angle. An opening 41c is provided at a substantially central portion of the main body 41a. The shape of the opening 41c in plan view is a polygon. The shape of the opening 41c should be determined by the shape and size of the object 80 and the angle at which the image is projected. The shape of the opening 41c shown in FIG. 7 is merely an example. It should be noted that light diffraction occurs at the edge of the opening 41c, resulting in out-of-focus, etc., and the edge of the opening 41c may be tapered to reduce this.

FIG. 8A is a perspective view showing an example of the projector side holder 431 constituting the mask holder 43. FIG. 8B is a perspective view showing an example of the reflector side holder 432 constituting the mask holder 43. The projector side holder 431 includes a base 431a having a rectangular plate shape and a plate shape, and includes two holding portions 431b extending in substantially vertical directions from both ends in the longitudinal direction of the base 431a. The projector-side holder 431 has an inverted L shape when viewed from the side. The projector side holder 431 is formed of a metal plate such as a stainless steel plate. Note that the projector-side holder 431 may be formed of resin or the like as long as the processing accuracy and strength required for the projector-side holder 431 can be ensured.

The reflector-side holder 432 has a rectangular plate-like base 432a and a plate-like shape, and includes two holding portions 432b extending from both longitudinal ends of the base 432a in an obtuse angle with the base. The reflector side holder 432 is formed of a metal plate such as a stainless steel plate. If the processing accuracy and strength required for the reflector-side holder 432 can be secured, the reflector-side holder 432 may be formed of resin or the like.

FIG. 9A is a perspective view showing an example of the mask holder 43. FIG. 9B is a plan view of the mask holder 43 shown in FIG. 9A. The mask holder 43 is formed by fixing the projector side holder 431 and the reflector side holder 432 together. As shown in FIG. 9A, the holding unit 431b of the projector side holder 431 and the holding unit 432b of the reflector plate side holder 432 are fixed so as to contact each other. The mask plate 41 is inserted between the two holding portions 432b.

FIG. 10 is a perspective view showing an example of the reflector 42. The reflection plate 42 includes a main body portion 42a and a fixing portion 42b. Both the main body portion 42a and the fixing portion 42b are plate-shaped. The reflecting plate 42 is formed of a metal that can be mirror-finished, for example, a stainless steel plate. At both ends in the longitudinal direction of the reflecting plate 42, fixing portions 42b that rise substantially vertically from the main body portion 42a are formed. The fixing portion 42b is formed with a screw hole 42c in which a round hole and an oblong hole are integrated.

FIG. 11 is a perspective view showing an example of the reflector support 44. The reflection plate support portion 44 includes a base portion 44a having a rectangular plate shape, and a support portion 44b extending in a substantially vertical direction from both longitudinal ends of the base portion 44a. The reflection plate support 44 is formed of a metal plate such as a stainless steel plate. Note that the reflector support 44 may be formed of resin or the like as long as the processing accuracy and strength required for the reflector support 44 can be ensured. Each support portion 44b is formed with a screw hole 44c in which a round hole and an oblong hole are integrated. The elongated round hole is provided along the longitudinal direction of the support portion 44.

FIG. 12 is a partial longitudinal sectional view of the housing 10 to which the display stand 17 and the like are fixed. The right side of FIG. 12 is the front side of the housing 10, and the left side is the rear side of the housing 10. As shown in FIG. 12, the projector-side holder 431 of the mask holder 43 is fixed in the hollow interior of the display stand 17 at a position near the front side of the projector 30. Further, a reflector side holder 432 is fixed in the hollow interior of the display stand 17 so as to be in contact with the projector side holder 431. A mask holder 43 is configured by the projector side holder 431 and the reflector side holder 432. A mask plate 41 is held by the mask holder 43.

In front of the mask holder 43 (on the right side in FIG. 12), a reflector support 44 is fixed in the hollow interior of the display stand 17. The reflector support 44 is fixed to the display stand 17 such that the base 44a is located on the front side (right side in FIG. 12) of the housing and the support 44b extends to the rear of the housing. The reflection plate 42 is fixed so as to be sandwiched between the two support portions 44b. The fixing portion 42b of the reflection plate 42 is fixed to the support portion 44b of the reflection plate support portion 44 by screws b3 and nuts (not shown). An opening is provided below the reflector 42 and the reflector support 44. The projection light reflected by the reflecting plate is projected onto the object installed on the display stand 17 through this opening. The dimension d shown in FIG. 12 indicates the depth dimension of the opening.

As shown in FIG. 4, an upper opening 171 b is provided in the upper portion 171 of the display stand 17, and the optical system 40 can be accessed by removing the top plate of the housing 10. As described above, the mask holder 43 has a pocket shape, and the mask plate 41 is structured to be inserted into the mask holder 43 and fixed. Thereby, the mask plate 41 can be easily replaced.

Further, the reflector 42 is fixed to the reflector support 44 using screws and nuts. For example, a nut that is easy to loosen or tighten, such as a wing nut, is used. The position and angle of the reflector 42 can be adjusted by turning and loosening the screw or wing nut. Since the screw hole 42c of the fixing portion 42b of the reflecting plate 42 and the screw hole 44c of the support portion 44b are formed into a shape in which a round hole and a round long hole are integrated, the projection of the reflecting plate 42 and the projection is made by changing the screw position. The distance from the machine side 30 can be changed. Further, since the reflecting plate 42 can be rotated about the screw b3, the direction in which the light emitted from the projector 30 is reflected can be adjusted.

FIG. 13 is a block diagram illustrating a hardware configuration example of the control device 20. The control device 20 includes a CPU (Central Processing Unit) 201, a RAM (Random Access Memory) 202, a ROM (Read Only Memory) 203, an image output unit 204, an audio output unit 205, an interface unit 206, and a communication interface unit 207.

The CPU 201 controls each part of the hardware according to the control program 2P stored in the ROM 203. The RAM 202 is, for example, SRAM, DRAM, flash memory or the like. The RAM 202 temporarily stores various data generated when the CPU 201 executes the program.

The image output unit 204 has a function of outputting image data to be projected onto the object 80 to the projector 30. The audio output unit 205 outputs audio data output from the speaker unit 70 via the amplifier 60.

The interface unit 206 is connected to the content DB 21. The CPU 201 exchanges data with the content DB 21 via the interface unit 206.

The communication interface unit 207 is connected to the wireless communication unit 50. The CPU 201 communicates with other computers and the like via the communication interface unit 207 and the wireless communication unit 50.

The control device 20 configured as described above performs the following operation by the control program 2P. The CPU 201 reads content from the content DB 21 via the interface unit 206. Here, the content is moving image content. That is, it is composed of moving image data and audio data associated therewith. The CPU 201 outputs moving image data of the read content to the projector 30 via the image output unit 204. The CPU 201 performs D / A conversion on the audio data of the content by the audio output unit 205 and outputs the audio signal to the amplifier 60.

Next, image display by the projection system 1 according to the present embodiment will be described. FIG. 14A is a perspective view showing an example of the object 80. The object 80 has a rectangular parallelepiped shape, and each surface is a flat surface having no unevenness. FIG. 14B is a perspective view showing an example of the object 80 onto which an image is projected. As shown in FIG. 14B, by projecting an image onto a rectangular parallelepiped object 80, a visual image as if a window on the frame exists even though the object 80 is a simple rectangular parallelepiped. An effect can be obtained.

The projection system according to this embodiment has the following effects. Since the projector 30 is installed in the housing 10 and the object 80 can be fixed to the display stand 17 provided in the housing 10, once assembled, it is possible to always perform projection mapping. Become. That is, it is possible to always appreciate the image projected on the object 80. Further, by attaching a light shielding film to the plate glass of the casing, it is possible to execute projection mapping without darkening the periphery of the casing 10, and a permanent display is possible instead of a temporary display. It can also be displayed in a bright showroom with a ceiling light or downlight.

By adopting the optical system 40 including the mask plate 41 and the reflecting plate 42, it is possible to secure a sufficient projection distance from the projector 30 to the object 80 while reducing the size of the housing 10. In addition, since the viewer has a structure in which the lens of the projector 30 cannot be directly seen and the interior of the housing 10 is painted black, the position of the light source cannot be grasped. Therefore, it is possible to give the viewer an impression as if the object 80 is emitting light. It is possible to give a deeper impression than that.

Since the reflecting plate 42 is made of a metal that can be mirror-finished, the reflectance is uniform over the entire surface of the plate, and a uniform image can be projected onto the object.
Moreover, in the mirror which vapor-deposited metals, such as aluminum and silver, on the single side | surface of a glass plate, the image which two surfaces from which the distance of the glass surface and a metal vapor deposition surface differs from the projector 30 received was reflected. For this reason, the image projected on the target object appears to be doubled. However, since the reflecting plate 42 of the present embodiment has a single reflecting surface, the image projected onto the object is prevented from appearing in a doubled state, the image is displayed more sharply, and the resolution is also maintained. It becomes possible.

The mask plate 41 can be easily replaced, and the angle and position of the reflecting plate 42 can be adjusted, so that the object 80 having various shapes can be handled.

Furthermore, since the control device 20, the content DB 21, the amplifier 60, and the speaker unit 70 are also stored in the housing 10, they can be transported in an assembled state. The installation can be completed in a short time.

In addition, since the wireless communication unit 50 is provided, content can be transmitted and controlled from another device having a wireless function.

The content DB 21 is separate from the control device 20, but the control device 20 may be provided.
Similarly, the control device 20 may include the wireless communication unit 50 and the amplifier 60.
The image data for generating the image projected by the projector 30 and the sound data for generating sound output from the speaker unit 70 are stored in the content DB 21, but via the wireless communication unit 50, It is good also as acquiring from the outside.

The technical features (components) described in each embodiment can be combined with each other, and new technical features can be formed by combining them.
The embodiments disclosed herein are illustrative in all respects and should not be considered as restrictive. The scope of the present invention is defined not by the above-described meaning but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

DESCRIPTION OF SYMBOLS 1 Projection system 10 Housing 15 Plate glass (window part)
16 Flat glass (window)
17 Exhibition stand (fixed part)
171 Upper part 171a Lower opening part 171b Upper opening part 172 Side part 173 Lower part 20 Controller 201 CPU
202 RAM
203 ROM
204 Image output unit 205 Audio output unit 206 Interface unit 207 Communication interface unit 21 Content DB (image storage unit, audio storage unit)
30 Projector 40 Optical system 41 Mask plate (restriction plate)
42 reflector 50 wireless communication unit 60 amplifier 70 speaker unit 80 object

Claims

In a projection system comprising: a projector that projects an image; and a fixing unit that fixes an object that is a projection target of the image.
The projection system, wherein the projector and the fixed part are housed in the same casing.
The projection system according to claim 1, wherein the casing includes a window portion that allows the object to be visually recognized from the outside.
The projection system according to claim 2, wherein the window portion includes a plate glass and a light shielding film fixed to one surface of the plate glass.
The projection system according to any one of claims 1 to 3, wherein the casing includes a reflector that reflects an image emitted from the projector and projects the image onto the object.
The projection system according to claim 4, wherein the reflecting plate is a mirror-like stainless steel plate.
The projection system according to claim 4, wherein the reflection plate is fixed so that an angle at which an image is reflected can be changed.
The projection system according to any one of claims 1 to 6, wherein the casing includes a limiting plate that limits a projection range of an image emitted from the projector.
An image storage unit for storing images;
An image output unit that reads an image from the image storage unit and outputs the read image to the projector;
The projection system according to any one of claims 1 to 7, wherein the image storage unit and the image output unit are housed in the casing.
A voice storage unit for storing voice information;
A voice output unit that reads voice information from the voice storage unit, converts the read voice information into a voice signal, and outputs the voice signal;
A speaker that outputs the audio signal as audio;
The projection system according to any one of claims 1 to 8, wherein the voice storage unit, the voice output unit, and a speaker are housed in the housing.
A wireless communication unit for performing wireless communication;
The projection system according to any one of claims 1 to 9, wherein the wireless communication unit is housed in the casing.