Projection cabinet, and projection system

Abstract

To improve the reliability of positioning accuracy of a projection cabinet.SOLUTION: A projection cabinet 2 comprises: a cabinet body 10 as a housing that houses a projector 3 projecting emitting projection light Lp as light as a projection image P to be projected on a wall surface W, and has an opening 31 as a first opening through which the projection light Lp passes; a lower assembly 20 that is arranged in the cabinet body 10 as an installation part where the projector 3 is installed; and a projection 21p that is arranged on the cabinet body 10 as a projection projecting toward the wall surface W. The projection 21p is brought into contact with the wall surface W to locate the projector 3 at a predetermined position for displaying the projection image P on the wall surface W.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a projection cabinet and a projection system.

Background Art

[0002] A cabinet described in Patent Document 1 is known as a movable furniture in a state where a projector is housed. According to the cabinet described in Patent Document 1, a user can easily align the cabinet at an appropriate projection position. For aligning the cabinet, the lid of the cabinet is used. After the user opens the lid and makes the end of the lid protrude toward the wall side, the user can move the cabinet and bring the end of the lid into contact with the wall to align the cabinet at an appropriate projection position. Note that the appropriate projection position is a position where a rectangular projection image can be projected onto a screen.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] If machining errors or assembly errors occur in the lid used for aligning the cabinet, the alignment accuracy may decrease, which may cause distortion and image quality degradation in the projection image. Therefore, further improvement in the reliability of the alignment accuracy is desired.

Means for Solving the Problems

[0005] The projection cabinet according to one aspect of the present application houses a projector that emits light as a projection image projected onto a projection surface, and includes a housing having a first opening through which the light passes, an installation portion disposed in the housing on which the projector is installed, and a protruding portion disposed in the housing and protruding toward the projection surface side. By bringing the protruding portion into contact with the projection surface, the projector is positioned at a predetermined position for displaying the projection image on the projection surface.

[0006] A projection system according to one aspect of the present application is a projection system including a projector that emits light as a projection image projected onto a projection surface, and a projection cabinet that houses the projector. The projection cabinet includes a housing having a first opening through which the light passes, an installation portion disposed in the housing on which the projector is installed, and a protruding portion disposed in the housing and protruding toward the projection surface side. By bringing the protruding portion into contact with the projection surface, the projector is positioned at a predetermined position for displaying the projection image on the projection surface.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5A

Figure 5B

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Mode for Carrying Out the Invention

[0008] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the following drawings, for ease of viewing of each component, the size scales may be shown differently depending on the component. Also, hereinafter, for convenience of explanation, three axes orthogonal to each other are defined as the X-axis, Y-axis, and Z-axis, and the direction parallel to the X-axis is also referred to as the "X-axis direction", the direction parallel to the Y-axis is also referred to as the "Y-axis direction", and the direction parallel to the Z-axis is also referred to as the "Z-axis direction". Also, the tip side of the arrow direction of each axis is also referred to as the "plus side", and the opposite side is also referred to as the "minus side". Also, hereinafter, the surface on the minus side in the X-axis direction is referred to as the "front surface", the surface on the plus side in the X-axis direction is referred to as the "rear surface", the surface on the minus side in the Y-axis direction is referred to as the "left side surface", the surface on the plus side in the Y-axis direction is referred to as the "right side surface", the surface on the plus side in the Z-axis direction is referred to as the "upper surface", and the surface on the minus side in the Z-axis direction is referred to as the "lower surface".

[0009] 1. Projection System 1.1. Schematic Configuration and Installation Mode of the Projection System The schematic configuration and installation mode of the projection system 1 will be described with reference to FIGS. 1 to 4. FIG. 1 is a front perspective view showing the schematic configuration and installation mode of the projection system 1. FIG. 2 is a rear perspective view showing the schematic configuration and installation mode of the projection system 1. FIG. 3 is a right side view showing the schematic configuration and installation mode of the projection system 1. FIG. 4 is a top view showing the schematic configuration and installation mode of the projection system 1. In FIGS. 3 and 4, the description of the Web camera 5, the controller 6, and the correction unit 7 is omitted.

[0010] As shown in FIG. 1 or FIG. 2, the projection system 1 includes a projection cabinet 2 and a projector 3 mounted on the projection cabinet 2. The projection cabinet 2 can be paraphrased as furniture. The projection cabinet 2 has a cabinet main body 10 and an operation panel 4. In the present embodiment, the cabinet main body 10 is an example of a housing. The cabinet main body 10 has a lower assembly 20 and an upper assembly 30, and is box-shaped as a whole.

[0011] The projector 3 is housed between the lower assembly 20 and the upper assembly 30. More specifically, the projector 3 is installed on the upper surface of the lower assembly 20 and is housed in a state where it is surrounded by the upper assembly 30 above and on all four sides. In the present embodiment, the lower assembly 20 is an example of an installation part.

[0012] An opening 31 is provided on the upper surface of the upper assembly 30. The opening 31 is an opening provided to allow the projection light Lp emitted from the projection light source unit 3p of the projector 3 to pass through. In the present embodiment, the opening 31 is an example of a first opening.

[0013] The projection cabinet 2 has casters 28 at the four corners of the lower surface of the lower assembly 20. If the lock of the caster 28 is released, the user can move the projection cabinet 2 to a desired location. For example, the user can move the projection cabinet 2 from a living room to a conference room or from one conference room to another conference room.

[0014] The user installs the projection cabinet 2 at a predetermined projection position in the conference room. At this time, the projection cabinet 2 is installed so that its back faces the wall surface W. Specifically, as shown in FIGS. 3 and 4, the user moves the projection cabinet 2 and brings the entire end face 21f of the protrusion 21p of the lower assembly 20 into contact with the wall surface W. The position where the entire end face 21f of the protrusion 21p of the lower assembly 20 abuts against the wall surface W is the predetermined projection position. In the present embodiment, the position where the protrusion 21p of the lower assembly 20 abuts against the wall surface W is an example of a predetermined position where the projector 3 displays the projection image P on the wall surface W as a projection surface. Note that the predetermined position can be rephrased as the predetermined projection position. Further, the protrusion 21p is an example of a protruding portion.

[0015] As shown in FIG. 1 or FIG. 2, after the projection cabinet 2 is installed at a predetermined projection position, the projector 3 is activated, and the projection light Lp is projected from the projection light source unit 3p toward the wall surface W. In the present embodiment, the wall surface W is an example of a projection surface. The projection surface is not limited to the wall surface W. The projection surface may be not only a rigid plane but also a screen formed of cloth or a sheet.

[0016] As shown in FIG. 2 or FIG. 4, the projection light source unit 3p is a part where the projection light Lp generated inside the projector 3 exits the housing of the projector 3. In other words, the projection light source unit 3p is an exit port through which the projector 3 emits the projection light Lp. The projection light source unit 3p is preferably covered with a translucent plate such as glass or synthetic resin, but may be an opening.

[0017] As shown in FIG. 1 or FIG. 2, when the projection light Lp is projected from the projection light source unit 3p of the projector 3 onto the wall surface W, the projection image P is displayed on the wall surface W. In the present embodiment, the projection light Lp is an example of light.

[0018] The screen size S of the projection image P is, for example, 80 inches. The screen size S is not limited to 80 inches. For example, it may be 100 inches or 120 inches. Further, the projection image P is rectangular. That is, the lengths of the diagonals of the projection image P are equal, and the midpoint of the diagonal of the projection image P coincides with the image center Cp.

[0019] 1.2. Size and Throw Ratio of the Projection System When the projection system 1 is installed at a predetermined projection position, the projection system 1 is designed such that the positional relationship from the floor surface FL or the wall surface W has a predetermined size according to the screen size S of the projection image P. FIGS. 1 to 3 show the definitions of each dimension regarding the predetermined size.

[0020] As shown in FIG. 3, the dimension Ph is the height from the floor surface FL where the projection cabinet 2 is installed to the upper surface of the lower assembly 20 where the projector 3 is installed. Specifically, the upper surface of the lower assembly 20 is the upper surface of the pedestal 21. Note that the upper surface of the lower assembly 20 or the upper surface of the pedestal 21 is an example of the installation surface where the projector 3 is installed.

[0021] The dimension Dh is the height from the floor surface FL where the projection cabinet 2 is installed to the lower end of the projection image P. The dimension Pd is the length from the end face 21f of the protrusion 21p that abuts against the wall surface W as the projection surface to the rear surface 3b of the projector 3. In the present embodiment, the rear surface 3b of the projector 3 is an example of the surface on the projection surface side of the projector 3. The dimension Ch is the height from the floor surface FL to the upper surface of the upper assembly 30.

[0022] The dimension Yd indicates the projection distance and is the length from the center of the projection light source unit 3p to the wall surface W as the projection surface. As shown in FIGS. 1 and 2, the dimension Zw indicates the horizontal length of the projection image P.

[0023] FIG. 5A is a table showing each screen size S of the projection system 1 and each dimension Dh, Ph, Pd. The numerical values described in the table indicate the preferred values of each dimension for each screen size S of two types of projectors A and B with different specifications. The projector A and the projector B are each an example of the projector 3.

[0024] Projector A and projector B have different slow ratios. Specifically, projector A has a smaller slow ratio than projector B and is a short-focus projector.

[0025] First, each screen size S and each dimension Dh, Ph, Pd of projector A will be described. The screen size S indicates the size of the projected image P and is in inches. In projector A, when the target screen size is 100 inches, the minimum value of the projected image P is 100 inches and the maximum value is 105 inches. The target screen size indicates the desired screen size to be displayed on projector A.

[0026] When the screen size S of the projected image P of projector A is the minimum value of 100 inches, it is preferable to set the dimension Dh to 75.0 cm, the dimension Ph to 38.0 cm, and the dimension Pd to 9.0 cm. It is preferable to set the values of each dimension Dh, Ph, Pd in this way. By setting the values of each dimension Dh, Ph, Pd in this way, a high-quality rectangular projected image P with suppressed distortion and image quality degradation can be easily displayed on the wall surface W without fine adjustment.

[0027] Note that the dimension Ch is set to a value between the dimension Dh and the dimension Ph. Preferably, as shown in FIG. 2, when it is set to the same value as the height of the table T in the conference room, the sense of unity with the table T can be enhanced.

[0028] From the table in FIG. 5A, when the screen size S of the projected image P of projector A is from 80 inches to 126 inches, it is preferable that the dimension Dh is 75.0 cm or more and 95.0 cm or less, the dimension Ph is 34.0 cm or more and 64.0 cm or less, and the dimension Pd is 2.0 cm or more and 20.0 cm or less. By making the projection system 1 have such specifications, a high-quality rectangular projected image P with suppressed distortion and image quality degradation can be easily displayed on the wall surface W without fine adjustment.

[0029] Next, each screen size S and each dimension Dh, Ph, Pd of projector B will be described. When the target screen size of projector B is 80 inches, the minimum value of the projected image P is 80 inches and the maximum value is 84 inches.

[0030] When the screen size S of the projected image P of projector B is the minimum value of 80 inches, it is preferable to set the dimension Dh to 75.0 cm, the dimension Ph to 35.0 cm, and the dimension Pd to 16.0 cm. By setting the values of each dimension Dh, Ph, Pd in this way, a high-quality rectangular projected image P with suppressed distortion and image quality degradation can be easily displayed on the wall surface W without fine adjustment.

[0031] From the table in Fig. 5A, when the screen size S of the projected image P by projector B is from 80 inches to 126 inches, it is preferable that the dimension Dh is 75.0 cm or more and 95.0 cm or less, the dimension Ph is 23.0 cm or more and 57.0 cm or less, and the dimension Pd is 16.0 cm or more and 47.0 cm or less. By setting the projection system 1 to such specifications, a high-quality rectangular projected image P with suppressed distortion and image quality degradation can be easily displayed on the wall surface W without fine adjustment.

[0032] Fig. 5B is a table showing the throw ratios of projector A and projector B. The throw ratio is the value obtained by dividing the dimension Yd by the dimension Zw. For projector 3, the shorter the projection distance when displaying the projected image P on the wall surface W, the smaller the throw ratio of the projection optical system.

[0033] First, the throw ratio of projector A will be described. The aspect ratio indicates the aspect ratio of the projected image P. Wide indicates the throw ratio at the wide end of the projection optical system, and Tele indicates the throw ratio at the tele end of the projection optical system. For example, when the aspect ratio is 16:9, the throw ratio of Wide is 0.16 and the throw ratio of Tele is 0.22. From the table in FIG. 5B, the slow ratio of projector A is 0.16 or more and 0.29 or less.

[0034] Next, the slow ratio of projector B will be described. For example, when the aspect ratio is 16:10, the slow ratio of Wide is 0.27 and the slow ratio of Tele is 0.37. From the table in FIG. 5B, the slow ratio of projector B is 0.27 or more and 0.44 or less.

[0035] 2. Projection Cabinet The configuration of the projection cabinet 2 will be described with reference to FIGS. 6 to 11. FIG. 6 is an exploded perspective view of the projection cabinet 2. FIG. 7 is an exploded perspective view of the cabinet body 10. FIG. 8 is a front perspective view of the projection cabinet 2. FIG. 9 is a rear perspective view of the projection cabinet 2. FIG. 10 is an enlarged right side view of the protrusion 21p. FIG. 11 is a plan view of the operation panel 4.

[0036] As shown in FIG. 6, the projection cabinet 2 has a cabinet body 10 and an operation panel 4. As shown in FIG. 7, the cabinet body 10 is composed of a lower assembly 20 and an upper assembly 30, and considering maintainability, the lower assembly 20 and the upper assembly 30 are disassemblably combined.

[0037] For the combination of the lower assembly 20 and the upper assembly 30, fixing members such as metal fittings are used. Note that the fixing members are provided at positions that are not visible from the outside so as not to damage the appearance. The appearance can be regarded as aesthetics.

[0038] 2.1. Lower Assembly As shown in FIGS. 6 and 7, the lower assembly 20 has a rectangular parallelepiped shape surrounded by six sides by a pedestal 21, a right side plate 22, a left side plate 23, a front plate 24, a front cover 26, a bottom plate 25, and a back lower cover 27. Casters 28 are provided at the four corners of the lower surface of the bottom plate 25.

[0039] The two casters 28 on the front side are locked, and the two casters 28 on the back side are not locked. Note that, as will be described later, since the projection cabinet 2 can be carried by the handle 29, it may be configured not to have the casters 28.

[0040] As shown in FIGS. 8 and 9, an accommodation space 20s is provided inside the lower assembly 20. The accommodation space 20s can be accessed via a front cover 26 provided on the front surface of the lower assembly 20 so as to be openable and closable, or a back lower cover 27 provided on the back surface of the lower assembly 20 so as to be openable and closable.

[0041] As shown in FIG. 8, by opening the front cover 26, the user can access the speaker 12 and the internal video IF (Interface) 13 accommodated in the accommodation space 20s from the front surface of the projection cabinet 2.

[0042] The internal video IF 13 is a port for video and / or audio, and has ports such as MIDI (Musical Instrument Digital Interface) and USB (Universal Serial Bus). The internal video IF 13 is connected to an AV (Audio Visual) input port 8 provided in the upper assembly 30, and a video signal and / or an audio signal is supplied from an external device via the AV input port 8.

[0043] The speaker 12 is an AV device capable of outputting a large volume. In the present embodiment, the speaker 12 is installed in the accommodation space 20s in a state of being attached to a 19-inch rack shelf.

[0044] The speaker 12 is accommodated when it is assumed to be used in a situation where a large volume is required, such as in a large conference room or an open space. Therefore, when a large volume is not required, the speaker 12 may not be accommodated.

[0045] As shown in FIG. 9, by opening the back lower cover 27, the user can access the internal power tap 14 housed in the accommodation space 20s from the back of the projection cabinet 2. The notch 27h provided in the back lower cover 27 can be used as a handle when opening the back lower cover 27.

[0046] Power cords of devices such as the projector 3, the speaker 12, the power supply port 11 provided in the upper assembly 30, and the web camera 5 are connected to the internal power tap 14, and AC power is supplied from an outlet (not shown) via the AC (Alternating Current) inlet 9 provided on the right side plate 22.

[0047] In addition, in the accommodation space 20s, a rack mount angle 15 for forming a 19-inch rack space 15s conforming to the EIA (Electronic Industries Alliance) standard is provided. 19-inch devices such as conference system devices and batteries are stored in the 19-inch rack space 15s.

[0048] 2.1.1. Pedestal As shown in FIGS. 6 and 7, the pedestal 21 is the top plate of the lower assembly 20. The projector 3 is installed on the upper surface of the pedestal 21. In other words, the pedestal 21 has an installation surface on which the projector 3 is installed. The pedestal 21 has a fixing portion 21c, a through hole 21a, a protrusion 21p, a handle 29, a wiring hole 17, and a supporter 16.

[0049] 2.1.1.1. Fixing of the projector The fixing portion 21c is provided to fix the projector 3 to the upper surface of the pedestal 21. By having the fixing portion 21c, displacement of the installation position of the projector 3 in the projection cabinet 2 is suppressed due to movement of the projection cabinet 2 or the like.

[0050] The fixing portion 21c is provided at two locations corresponding to the positions of the legs 3m of the projector 3. In this embodiment, the fixing portion 21c is a concave portion. By fitting the tip of the leg 3m of the projector 3 into the concave portion, the projector 3 is fixed. Note that the fixing portion 21c is not limited to a concave portion. For example, it may be a through hole, an L-shaped columnar body, an angle, a bracket, or the like. Also, the location where the fixing portion 21c is arranged is not limited to two locations. The necessary number of fixing portions 21c for suppressing the positional deviation of the projector 3 may be provided at necessary locations.

[0051] 2.1.1.2. Opening for Projector Intake The through hole 21a is an opening for intake of the projector 3 and is provided at a position corresponding to the intake port of the projector 3 on the pedestal 21. Through the through hole 21a, the projector 3 can stably intake necessary and sufficient cooling air via the through hole 21a. In this embodiment, the through hole 21a is an example of the second opening.

[0052] In this embodiment, since the projector 3 has intake ports at two locations, the center of the bottom surface and the front side, the through holes 21a are also provided at two locations corresponding to the intake ports. Note that the through hole 21a provided at one location may be composed of a plurality of through holes or slits formed by punching or slitting.

[0053] 2.1.1.3. Projection The projection 21p is a portion on the back side of the pedestal 21 and is the portion that protrudes most in the positive X-axis direction in the cabinet main body 10. As shown in FIG. 10, the projection 21p protrudes from the back surface of the back lower cover 27 or the back plate 39 of the upper assembly 30 by a length Pw. In this embodiment, the length Pw is 2 mm or more and 5 mm or less. By setting the dimension of the length Pw to 2 mm or more and 5 mm or less, the influence on the appearance can be minimized.

[0054] The end face 21f of the protrusion 21p constitutes a reference plane when positioning the projector 3 at a predetermined projection position. In the present embodiment, as shown in FIG. 4, the end face 21f is a continuous flat surface. Note that the end face 21f is not limited to a flat surface. The end face 21f may have irregularities as long as it can constitute a reference plane.

[0055] In the projection cabinet 2 of the present embodiment, the protrusion 21p used when positioning the projector 3 at a predetermined projection position is provided integrally with the pedestal 21. Further, the projector 3 is installed on the pedestal 21. In other words, the only component provided between the wall surface W with which the protrusion 21p abuts and the projector 3 is only one point of the pedestal 21.

[0056] Therefore, it is possible to reduce the possibility of manufacturing variations and assembly errors occurring. Furthermore, it is also possible to suppress the possibility of rattling occurring due to use and aging. Thus, the reliability of the alignment accuracy can be improved.

[0057] On the other hand, what is described in Patent Document 1 has a plurality of components including a lid, a bottom plate on which the projector is installed, and four panels provided between the lid and the bottom plate between the wall and the projector. Furthermore, the lid used for aligning the cabinet is composed of three plate-like members. In other words, the lid is composed of three components. As described above, since what is described in Patent Document 1 has a plurality of components between the wall and the projector, it is more susceptible to manufacturing variations and assembly errors than that of the present embodiment. Furthermore, what is described in Patent Document 1 is more likely to rattle due to use and aging than that of the present embodiment.

[0058] 2.1.1.4. Handle As shown in FIGS. 6 and 7, the handles 29 are provided on both the left and right sides of the pedestal 21. The handles 29 are used when moving the projection cabinet 2. For example, at a location with a step that the caster 28 cannot cross, the user can grasp the handle 29 by hand and lift the projection cabinet 2 to cross the step.

[0059] The right handle 29 is the part between the first hole 29a which is a through hole provided in the right plate 22 and the second hole 29b which is a through hole provided in the pedestal 21. The left handle 29 is the part between the first hole 29a which is a through hole provided in the left plate 23 shown in Fig. 9 and the second hole 29b which is a through hole provided in the pedestal 21.

[0060] As shown in Figs. 6 and 7, the first hole 29a and the second hole 29b communicate with each other through the accommodation space 20s of the lower assembly 20. The user can grasp the handle 29 by inserting a hand from the first hole 29a into the second hole 29b.

[0061] 2.1.1.5. Wiring holes, supporters, and mounting holes The wiring hole 17 is a hole for cabling. Five or six wiring holes 17 are arranged on the back 3b side of the projector 3. In this way, since the back 3b side of the projector 3 on the pedestal 21 is provided with a plurality of wiring holes 17, the wiring work is easy and beautiful cabling is possible.

[0062] The supporter 16 is provided at the four corners of the upper surface of the pedestal 21 at positions where it abuts against the inside of the upper assembly 30. The supporter 16 is a support that receives the load when the upper assembly 30 is pushed. Therefore, even if the user pushes the upper assembly 30, the entire projection cabinet 2 including the lower assembly 20 can be moved without difficulty.

[0063] As shown in Fig. 7, a mounting hole 22c is provided in the right plate 22. The AC inlet 9 is attached to the mounting hole 22c. The AC inlet 9 is a connector for connecting an AC cable.

[0064] 2.2. Upper assembly As shown in Fig. 6, the upper assembly 30 has a rectangular parallelepiped shape surrounded by five faces excluding the lower face by two top plates 35a, 35b, a right plate 36, a left plate 37, a front plate 38, and a back plate 39.

[0065] The upper assembly 30 is fixed to the upper surface of the pedestal 21. On the upper surface of the top plate 35a, an operation panel 4, a web camera 5, a controller 6, and a correction unit 7 are provided. Further, an AV input port 8 is provided on the right side surface of the right side plate 36.

[0066] 2.2.1. Opening for the projector projection light An opening 31 is provided on the upper surface of the upper assembly 30. The opening 31 is an opening for the projection light Lp of the projector 3. As described above, the projection light Lp emitted from the projection light source unit 3p passes through the opening 31 and is displayed on the wall surface W as a projection surface. The opening 31 exposes the projection light source unit 3p of the projector 3 in a plan view as shown in FIG. 4. As shown in FIG. 7, the opening 31 is a portion of the interval between the top plate 35a provided on the front side of the upper assembly 30 and the top plate 35b provided on the rear side.

[0067] 2.2.2. Opening for the projector exhaust As shown in FIG. 8, the notch 33 provided in the right side plate 36 is an opening for exhausting the projector 3, and is provided at a position corresponding to the exhaust port 3e on the right side surface of the projector 3. Further, as shown in FIG. 9, the notch 34 provided in the left side plate 37 is an opening for exhausting the projector 3, and is provided at a position corresponding to the exhaust port 3e on the left side surface of the projector 3.

[0068] With the notch 33 and the notch 34, the projector 3 can easily discharge the air exhausted from the projector 3 to the outside of the projection cabinet 2 through the notch 33 and the notch 34. In the present embodiment, the notch 33 and the notch 34 are an example of the third opening. Note that the notch 33 and / or the notch 34 may be a through hole, or may be composed of a plurality of through holes or slits formed by punching or slitting.

[0069] 2.2.3. Aperture for Projector Focus Adjustment As shown in Fig. 8, the aperture 32 provided in the right side plate 36 is an aperture for adjusting the focus lever of the projector 3, and is provided at a position corresponding to the focus lever of the projector 3. By providing the aperture 32, the user can easily access the focus lever of the projector 3 and adjust the focus of the projected image P. Therefore, according to the projection cabinet 2 of the present embodiment, it is possible to suppress the operability of the projector 3 from being impaired.

[0070] 2.2.4. Mounting Holes As shown in Fig. 7, the upper assembly 30 has mounting holes 35h, 36c. The mounting hole 35h is provided in the top plate 35a. The web camera 5 is fixed to the top plate 35a using the mounting hole 35h. The web camera is a device for video conferencing equipped with a camera, a microphone, and a speaker.

[0071] The mounting hole 36c is provided in the right side plate 36. The AV input port 8 is attached to the mounting hole 36c. The AV input port 8 is composed of an HDMI (registered trademark) (High Definition Multimedia Interface) connector, a USB (Universal Serial Bus) connector, and the like.

[0072] As shown in Fig. 9, the power supply port 11 is attached to the left side plate 37. The power supply port 11 is attached using a mounting hole (not shown). The power supply port 11 is a port for USB power supply.

[0073] 2.2.5. Aperture for Maintenance As shown in Fig. 9, the back plate 39 is detachably attached to the top plate 35b. The user can open the back plate 39 by using the notch 39h of the back plate 39. By opening the back panel 39, a large opening can be provided on the back of the upper assembly 30. The user can utilize this opening to easily perform maintenance on the projector 3 and wiring work using the wiring hole 17.

[0074] 2.3. Operation Panel As shown in FIG. 11, the operation panel 4 has operation buttons 41, 42a, 42b, 43, 44, 45 for controlling the projector 3 and / or the speaker 12. In the present embodiment, the operation buttons 41, 42a, 42b, 43, 44, 45 are an example of operating elements.

[0075] The operation buttons 41, 42a, 42b, 43, 44, 45 are operation buttons corresponding to five types of functions: power, volume adjustment, mute, video source switching, and auto adjustment. In the present embodiment, the above five types of functions are selected from the perspective of usage frequency.

[0076] Power includes functions to turn on and off the power of the projector 3 and the speaker 12, and one operation button 41 is provided corresponding to these two functions. The operation button 41 is the power button.

[0077] By clicking the operation button 41, power-on is executed. Specifically, the projector 3 and the speaker 12 transition from the standby state to the startup state. Also, by long-pressing the operation button 41, power-off is executed. Specifically, the projector 3 and the speaker 12 transition from the startup state to the standby state.

[0078] Volume adjustment includes functions to increase the volume of the speaker 12 by one unit, decrease the volume by one unit, continuously increase the volume, and continuously decrease the volume, and two operation buttons 42 are provided corresponding to these four functions. The operation button 42a is the volume UP button, and the operation button 42b is the volume DOWN button.

[0079] Clicking the operation button 42a increases the volume of the projector 3 and the speaker 12 by one unit. Pressing and holding the operation button 42a increases the volume continuously. Clicking the operation button 42b decreases the volume by one unit. Pressing and holding the operation button 42b decreases the volume continuously.

[0080] The mute function includes a function of muting the projector 3 and the speaker 12 and a function of canceling the mute state, and one operation button 43 is provided corresponding to these two functions. The operation button 43 is a mute button. Muting is executed by clicking the operation button 43. In the muted state, the muted state is released by clicking the operation button 43.

[0081] The image source switching is a function for switching the image source of the projector 3, and one operation button 44 is provided in correspondence with this function. The operation button 44 is an image source switching button.

[0082] The image source is switched by clicking the operation button 44. Specifically, the content of the displayed projection image P is switched. Furthermore, if the projector 3 has multiple input terminals for image sources, the image source is cyclically switched each time the operation button 44 is clicked.

[0083] The automatic adjustment is a function for adjusting the angle of view of the projector 3 to a rectangle, and one operation button 45 is provided in correspondence with this function. The operation button 45 is an automatic adjustment button. Clicking the operation button 45 starts the angle of view adjustment, and when the angle of view adjustment is completed, the system returns to the start-up state.

[0084] The operation panel 4 may be a touch panel. In this case, various icons for operation are displayed on the display screen as the operation buttons 41, 42a, 42b, 43, 44, and 45. The user can perform operations related to the five types of functions described above by tapping or pressing and holding the icons.

[0085] On the operation panel 4, it is preferable that the number of types of functions that can be operated is 1 or more and 5 or less. By setting the number of types of functions that can be operated on the operation panel 4 to 1 or more and 5 or less, simple and intuitive operations can be performed.

[0086] In addition, when the number of types of functions that can be operated on the operation panel 4 is 4 or less, the necessary functions may be selected from the above-mentioned five types of functions: power supply, volume adjustment, mute, video source switching, and automatic adjustment. Also, functions other than the above-mentioned five types may be selected as the functions that can be operated on the operation panel 4.

[0087] Although a plurality of functions are assigned to each of the operation buttons 41, 42a, 42b, 43, 44, 45, the number of types of functions that can be operated by each of the operation buttons 41, 42a, 42b, 43, 44, 45 is 1 type. For example, two functions, namely the function of turning on the power and the function of turning off the power, are assigned to the operation button 41, but both are functions related to the power supply, and the number of types of functions is 1 type. In this way, by setting the number of types of functions assigned to each operation button 41, 42a, 42b, 43, 44, 45 to 1 type, a simple configuration can be achieved.

[0088] 2.4. Controller FIG. 12 is a block diagram showing the configuration of the controller 6. The controller 6 includes a CUP (Central Processing Unit) 61, a digital I / O (Input / Output) port 62, a plurality of I / Fs (Interfaces) 63a, 63b, 63c, and a digital I / O port 64.

[0089] The operation panel 4 is connected to the digital I / O port 62 via a cable. The projector 3 is connected to the I / F 63a, the speaker 12 is connected to the I / F 63b. The other device 18 may be connected to the I / F 63c. The correction unit 7 is connected to the digital I / O port 64.

[0090] The CPU 61 controls the projector 3 and / or the speaker 12 based on the operation signals from the operation panel 4. The correction unit 7 has sensors such as an illuminance sensor, and the CPU 61 corrects the projection luminance of the projector 3 to an appropriate value based on the signals from the correction unit 7.

[0091] 2.5. An example of cabling FIG. 13 is a diagram showing an example of the cabling of the projection cabinet 2. In the projection cabinet 2 of the present embodiment, in addition to the projector 3, the operation panel 4, the web camera 5, the controller 6, the correction unit 7, the AV input port 8, the AC inlet 9, the power supply port 11, the speaker 12, the internal video IF 13, and the internal power tap 14 are packaged in the cabinet main body 10. As shown in FIG. 13, the projection cabinet 2 is stored in a pre-cabled state so that it can be used immediately.

[0092] 2.6. An example of use case Next, an example of the use case of the projection cabinet 2 will be described. The user moves the projection cabinet 2 to a conference room and installs the projection cabinet 2 at a predetermined projection position. At this time, the user can easily install the projection cabinet 2 at the predetermined projection position by simply bringing the protrusion 21p of the projection cabinet 2 into contact with the wall surface W of the conference room.

[0093] The user connects a power cable to the AC inlet 9 of the projection cabinet 2 and connects the power cable to the outlet 72. In addition, the user connects the user's PC 71 to the AV input port 8. The user clicks the operation button 41 on the operation panel 4 to activate the projector 3 and the speaker 12.

[0094] The user clicks the operation button 45 to adjust the picture angle of the projector 3. The user operates the operation button 42a or the operation button 42b to adjust the volume. When the video source is not the desired source, the user operates the operation button 44 to change to the desired source.

[0095] When the use of the projection cabinet 2 is finished, the user clicks the operation button 41 to turn off the power of the projector 3 and the speaker 12. The user removes the power cable and the user's PC 71 from the projection cabinet 2 and tidies up the projection cabinet 2.

[0096] As described above, the projection cabinet 2 of the present embodiment houses a projector 3 that emits projection light Lp as light for a projection image P projected onto a wall surface W as a projection surface, and has a cabinet body 10 as a housing having an opening 31 as a first opening through which the projection light Lp passes, a lower assembly 20 as an installation portion disposed in the cabinet body 10 and on which the projector 3 is installed, and a protrusion 21p as a protruding portion disposed in the cabinet body 10 and protruding toward the wall surface W. By bringing the protrusion 21p into contact with the wall surface W, the projector 3 is positioned at a predetermined position for displaying the projection image P on the wall surface W.

[0097] Thus, in the projection cabinet 2 of the present embodiment, by bringing the protrusion 21p into contact with the wall surface W, the projector 3 is positioned at a predetermined position for displaying the projection image P on the wall surface W. Therefore, the reliability of the alignment accuracy can be improved.

[0098] Also, in the projection cabinet 2 of the present embodiment, the lower assembly 20 as the installation portion has a pedestal 21 on which the projector 3 is placed, and the protrusion 21p as the protruding portion is a part of the pedestal 21. Note that the protruding portion exemplified by the protrusion 21p is not limited to being configured as a part of the pedestal 21, and may be configured, for example, by installing resin, rubber, or the like at the tip of a protrusion extending from the pedestal 21. That is, the protruding portion may be configured to include a protrusion and resin, rubber, or the like. Thus, the protrusion 21p is a part of the pedestal 21. In other words, the component provided between the wall surface W as the projection surface and the projector 3 is only one point of the pedestal 21. Therefore, it is possible to reduce the possibility of manufacturing variations and assembly errors. Furthermore, it is also possible to suppress the possibility of rattling due to use or aging.

[0099] Also, in the projection cabinet 2 of the present embodiment, the pedestal 21 has a through hole 21a as a second opening disposed at a position corresponding to the intake port provided in the projector 3, and the cabinet body 10 as a housing has a notch 33 as a third opening disposed at a position corresponding to the exhaust port 3e provided on the side surface intersecting the bottom surface of the projector 3. Thus, the projection cabinet 2 of the present embodiment has openings at positions corresponding to the intake and exhaust ports of the projector 3. Therefore, the projection cabinet 2 can keep the intake and exhaust of the accommodated projector 3 in good condition, and the projector 3 can be stably operated.

[0100] Also, the projection cabinet 2 of the present embodiment further includes a handle 29 including a first hole 29a provided in the cabinet body 10 as a housing and a second hole 29b provided in the pedestal 21 and communicating with the first hole 29a through the accommodation space 20s as the space inside the cabinet body 10. Thus, the projection cabinet 2 has the handle 29 composed of the first hole 29a and the second hole 29b. Therefore, the projection cabinet 2 can be easily carried.

[0101] Also, in the projection cabinet 2 of the present embodiment, the pedestal 21 has a fixing portion 21c for fixing the projector 3. Therefore, it is possible to prevent the installation position of the projector 3 from shifting due to the transportation or the like of the projection cabinet 2.

[0102] Further, in the projection cabinet 2 of the present embodiment, an operation panel 4 is provided which is arranged in a cabinet body 10 as a housing and has a plurality of operation buttons 41, 42a, 42b, 43, 44, 45 as operators, and the number of types of functions operated by the plurality of operation buttons 41, 42a, 42b, 43, 44, 45 is one or more and five or less. Therefore, the user can operate the operation panel 4 simply and intuitively.

[0103] Also, in the projection cabinet 2 of the present embodiment, the number of types of functions operated by each operation button among the plurality of operation buttons 41, 42a, 42b, 43, 44, 45 is one type each. In this way, by making the number of types of functions assigned to each operation button 41, 42a, 42b, 43, 44, 45 one type each, the operation panel 4 can have a simple configuration.

[0104] The projection system 1 of the present embodiment is a projection system 1 including a projector 3 that emits projection light Lp as light as a projection image P projected onto a wall surface W as a projection surface, and a projection cabinet 2 that houses the projector 3. The projection cabinet 2 includes a cabinet body 10 as a housing having an opening 31 as a first opening through which the projection light Lp passes, a lower assembly 20 as an installation portion arranged in the cabinet body 10 where the projector 3 is installed, and a protrusion 21p as a protruding portion arranged in the cabinet body 10 and protruding toward the wall surface W. By bringing the protrusion 21p into contact with the wall surface W, the projector 3 is positioned at a predetermined position for displaying the projection image P on the wall surface W.

[0105] In this way, in the projection system 1 of the present embodiment, by bringing the protrusion 21p into contact with the wall surface W, the projector 3 is positioned at a predetermined position for displaying the projection image P on the wall surface W. Therefore, the reliability of the alignment accuracy can be enhanced.

[0106] Also, in the projection system 1 of the present embodiment, when the projector 3 is positioned at a predetermined position, the size of the projection image P on the wall surface W is 80 inches or more and 126 inches or less, the slow ratio of the projection system 1 is 0.16 or more and 0.29 or less, the height from the floor surface FL where the projection cabinet 2 is installed to the upper surface of the lower assembly 20 or the pedestal 21 as the installation surface where the projector 3 is installed is 340 mm or more and 640 mm or less, the height from the floor surface FL to the lower end of the projection image P is 750 mm or more and 950 mm or less, and the length from the end surface 21f of the protrusion 21p as the protruding portion in contact with the wall surface W to the rear surface 3b as the wall surface W side surface of the projector 3 is 20 mm or more and 200 mm or less.

[0107] Thus, when the size of the projection image P is 80 inches or more and 126 inches or less and the slow ratio is 0.16 or more and 0.29 or less, by setting each dimension within a predetermined range, the projection system 1 of the present embodiment can easily display a high-quality rectangular projection image P with reduced distortion and image quality degradation on the wall surface W without fine adjustment.

[0108] Also, in the projection system 1 of the present embodiment, when the projector 3 is positioned at a predetermined position, the size of the projection image P on the wall surface W is 80 inches or more and 126 inches or less, the slow ratio of the projection system 1 is 0.27 or more and 0.44 or less, the height from the floor surface FL where the projection cabinet 2 is installed to the upper surface of the lower assembly 20 or the pedestal 21 as the installation surface where the projector 3 is installed is 230 mm or more and 570 mm or less, the height from the floor surface FL to the lower end of the projection image P is 750 mm or more and 950 mm or less, and the length from the end surface 21f of the protrusion 21p as the protruding portion in contact with the wall surface W to the rear surface 3b as the wall surface W side surface of the projector 3 is 160 mm or more and 470 mm or less.

[0109] Thus, when the size of the projected image P is 80 inches or more and 126 inches or less, and the slow ratio is 0.27 or more and 0.44 or less, by setting each dimension within a predetermined range, the projection system 1 of the present embodiment can easily display a high-quality rectangular projected image P with reduced distortion and image quality degradation on the wall surface W without making fine adjustments.

[0110] As described above, the present invention has been described based on the preferred embodiments, but the present invention is not limited to the above-described embodiments. Further, the configuration of each part of the present invention can be replaced with any configuration that exhibits the same functions as those of the above-described embodiments, and any configuration can be added.

[0111] [Summary of the Present Disclosure] Hereinafter, a summary of the present disclosure will be appended. (Appendix 1) A housing that houses a projector that emits light as a projected image to be projected onto a projection surface, and has a first opening through which the light passes, An installation portion disposed in the housing and on which the projector is installed, A protruding portion disposed in the housing and protruding toward the projection surface side, and By bringing the protruding portion into contact with the projection surface, the projector is positioned at a predetermined position for displaying the projected image on the projection surface. Projection cabinet. Thereby, the reliability of the alignment accuracy can be improved. (Appendix 2) The installation portion has a pedestal on which the projector is placed, The protruding portion is a part of the pedestal. The projection cabinet according to Appendix 1. Thereby, the possibility of manufacturing variations and assembly errors can be reduced. Furthermore, the possibility of rattling due to use or aging can also be suppressed. (Appendix 3) The pedestal has a second opening disposed at a position corresponding to an air intake provided in the projector. The housing has a third opening disposed at a position corresponding to an exhaust port provided on a side surface intersecting the bottom surface of the projector. The projection cabinet according to Supplementary Note 2. Thereby, the intake and exhaust of the accommodated projector can be kept good, and the projector can be stably operated. (Supplementary Note 4) It includes a handle composed of a first hole provided in the housing and a second hole provided in the pedestal and communicating with the first hole through the space inside the housing. The projection cabinet according to Supplementary Note 2 or Supplementary Note 3. Thereby, the projection cabinet can be easily carried. (Supplementary Note 5) The pedestal has a fixing portion for fixing the projector. The projection cabinet according to any one of Supplementary Notes 2 to 3. Thereby, it is possible to suppress a deviation in the installation position of the projector due to the transportation or the like of the projection cabinet. (Supplementary Note 6) It is provided with an operation panel disposed in the housing and having a plurality of operators. The number of types of functions operated by the plurality of operators is one or more and five or less. The projection cabinet according to any one of Supplementary Notes 1 to 5. Thereby, the user can operate the operation panel simply and intuitively. (Supplementary Note 7) The number of types of functions operated by each of the plurality of operators is one type each. The projection cabinet according to Supplementary Note 6. Thereby, the operation panel can be configured simply. (Supplementary Note 8) A projection system including a projector that emits light as a projection image projected on a projection surface, and a projection cabinet that houses the projector, The projection cabinet is a housing having a first opening through which the light passes, An installation part that is disposed in the housing and where the projector is installed, and a protruding part that is disposed in the housing and protrudes toward the projection surface side, wherein by bringing the protruding part into contact with the projection surface, the projector is positioned at a predetermined position on the projection surface where the projection image is to be displayed, A projection system. Thereby, the reliability of the alignment accuracy can be enhanced. (Appendix 9) In a state where the projector is positioned at the predetermined position, the size of the projection image on the projection surface is 80 inches or more and 126 inches or less, the slow ratio of the projection system is 0.16 or more and 0.29 or less, the height from the floor surface where the projection cabinet is installed to the installation surface where the projector is installed is 340 mm or more and 640 mm or less, the height from the floor surface to the lower end of the projection image is 750 mm or more and 950 mm or less, the length from the end surface of the protruding part that contacts the projection surface to the surface of the projector on the projection surface side is 20 mm or more and 200 mm or less, The projection system according to Appendix 8. Thereby, without making fine adjustments, a high-quality rectangular projection image P with suppressed distortion and image quality degradation can be easily displayed on the wall surface W. (Appendix 10) In a state where the projector is positioned at the predetermined position, the size of the projection image on the projection surface is 80 inches or more and 126 inches or less, the slow ratio of the projection system is 0.27 or more and 0.44 or less, the height from the floor surface where the projection cabinet is installed to the installation surface where the projector is installed is 230 mm or more and 570 mm or less, the height from the floor surface to the lower end of the projection image is 750 mm or more and 950 mm or less, The length from the end face of the protruding portion that abuts against the projection surface to the surface on the projection surface side of the projector is 160 mm or more and 470 mm or less. The projection system according to Supplementary Note 8. As a result, without making fine adjustments, a high-quality rectangular projection image P with suppressed distortion and image quality degradation can be easily displayed on the wall surface W.

Explanation of Reference Numerals

[0112] 1...Projection system, 2...Projection cabinet, 3...Projector, 3b...Rear surface, 3e...Exhaust port, 3m...Leg, 3p...Projection light source unit, 4...Operation panel, 5...Web camera, 6...Controller, 7...Correction unit, 8...AV input port, 9...AC inlet, 10...Cabinet body, 11...Power supply port, 12...Speaker, 13...Internal video IF, 14...Internal power tap, 15...Rack mount angle, 15s...19-inch rack space, 16...Support, 17...Wiring hole, 18...Other devices, 20...Lower assembly, 20s...Storage space, 21...Pedestal, 21a...Through hole, 21c...Fixing part, 21f...End face, 21p...Protrusion, 22...Right side plate, 22c...Mounting hole, 23...Left side plate, 24...Front plate, 25...Bottom plate, 26...Front cover, 27...Back lower cover, 27h...Notch, 28...Caster, 29...Handle, 29a...First hole, 29b...Second hole, 30...Upper assembly, 31...Opening, 32...Opening, 33, 34...Notches, 35a...Top plate, 35b...Top plate, 35h...Mounting hole, 36...Right side plate, 36c...Mounting hole, 37...Left side plate, 38...Front plate, 39...Back plate, 39h...Notch, 41, 42, 42a, 42b, 43, 44, 45...Operation buttons, 61...CPU, 62...Digital I / O port, 63a, 63b, 63c...I / F, 64...Digital I / O port, 71...PC, 72...Outlet, S...Screen size, Zw...Dimension, Dh...Dimension, Ch...Dimension, Ph...Dimension, Pd...Dimension, Yd...Dimension, Pw...Length, Cp...Image center, P...Projection image, Lp...Projection light, W...Wall surface, FL...Floor surface, T...Table.

Claims

1. A projection cabinet that houses a projector that emits light as a projection image projected onto a projection surface, and has a first opening through which the light passes; An installation part that is arranged in the housing and on which the projector is installed; A protruding part that is arranged in the housing and protrudes toward the projection surface side, and is provided with: By bringing the protruding part into contact with the projection surface, the projector is positioned at a predetermined position on the projection surface where the projection image is displayed. Projection cabinet.

2. The installation part has a pedestal on which the projector is placed, The protruding part is a part of the pedestal. The projection cabinet according to claim 1.

3. The pedestal has a second opening arranged at a position corresponding to an air intake provided in the projector, The housing has a third opening arranged at a position corresponding to an exhaust port provided on a side surface intersecting the bottom surface of the projector. The projection cabinet according to claim 2.

4. A handle comprising a first hole provided in the housing and a second hole provided in the pedestal and communicating with the first hole through a space inside the housing. The projection cabinet according to claim 2.

5. The pedestal has a fixing part for fixing the projector. The projection cabinet according to claim 2.

6. An operation panel having a plurality of operators is arranged in the housing, The number of types of functions operated by the plurality of operators is one or more and five or less. The projection cabinet according to claim 1.

7. The number of types of functions operated by each of the plurality of operators is one for each. The projection cabinet according to claim 6.

8. A projection system comprising a projector that emits light as a projection image projected onto a projection surface, and a projection cabinet that houses the projector, The projection cabinet is A housing having a first opening through which the light passes, An installation part that is arranged in the housing and on which the projector is installed, A protruding part that is arranged in the housing and protrudes toward the projection surface side, and has: By bringing the protruding part into contact with the projection surface, the projector is positioned at a predetermined position on the projection surface where the projection image is displayed. Projection system.

9. In a state where the projector is positioned at the predetermined position, The size of the projection image on the projection surface is 80 inches or more and 126 inches or less. The slow ratio of the projection system is 0.16 or more and 0.29 or less. The height from the floor surface where the projection cabinet is installed to the installation surface where the projector is installed is 340 mm or more and 640 mm or less. The height from the floor surface to the lower end of the projection image is 750 mm or more and 950 mm or less. The length from the end surface of the protruding portion that contacts the projection surface to the surface of the projector on the projection surface side is 20 mm or more and 200 mm or less. The projection system according to claim 8.

10. In a state where the projector is positioned at the predetermined position, The size of the projection image on the projection surface is 80 inches or more and 126 inches or less. The slow ratio of the projection system is 0.27 or more and 0.44 or less. The height from the floor surface where the projection cabinet is installed to the installation surface where the projector is installed is 230 mm or more and 570 mm or less. The height from the floor surface to the lower end of the projection image is 750 mm or more and 950 mm or less. The length from the end surface of the protruding portion that contacts the projection surface to the surface of the projector on the projection surface side is 160 mm or more and 470 mm or less. The projection system according to claim 8.

Images