Projection system

Abstract

To suppress an influence by a projector stand on a sound output from a loudspeaker in a configuration of a projector equipped with the projector stand.SOLUTION: A projection system includes a projector, a stand base, a first arm part and a second arm part. An exterior housing of the projector includes a first wall part, a second wall part, a third wall part, a fourth wall part, a fifth wall part and a sixth wall part. In the projector, a first loudspeaker is arranged at a first corner part formed of the second wall part and the third wall part, and a second loudspeaker is arranged at a second corner part formed of the second wall part and the fourth wall part. When the projection system is used in a second attitude in which an optical axis extends in a third axial direction, an area at which the first loudspeaker overlap the first arm part is smaller than an area at which the first loudspeaker does not overlap the first arm part, in planar viewing of the projection system in a second axial direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a projection system. [Background technology]

[0002] Conventionally, projectors with speakers arranged inside an exterior housing are known (see, for example, Patent Document 1). In the projector described in Patent Document 1, speakers are arranged in the left and right corners on the rear side opposite the front side where an image is projected. Furthermore, among projectors that project images, there is known one that has a projector support base that rotatably supports the projector (see, for example, Patent Document 2). This type of projector allows the user to freely adjust the direction of the image light projected by the projector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-143004 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-027369 Summary of the Invention [Problem to be solved by the invention]

[0004] When a projector support stand is used for a projector having a speaker, the projector support stand may block the sound output port, which may affect the sound output from the speaker. [Means for solving the problem]

[0005] One aspect of the present disclosure is a projection system including a projector, a stand base that supports the projection system when the projection system is installed, and a first arm and a second arm that are coupled to the projector and the stand base and connect the projector and the stand base, the projector having a projection lens, an exterior housing, and a speaker, the speaker having a first speaker and a second speaker, and the exterior housing supports the projection system. and a sixth wall portion located vertically below the fifth wall portion, the sixth wall portion being located vertically below the fifth wall portion, and the fifth wall portion being located vertically below the fifth wall portion, the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the fifth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, the fifth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being located vertically below the fifth wall portion, and the fifth wall portion being located vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the sixth wall portion being vertically below the fifth wall portion, and the fifth wall portion being vertically below the fifth wall portion, and the sixth ... the second speaker is disposed inside the exterior housing at a first corner formed by the second wall portion and the fourth wall portion, the projector is rotatable relative to the first arm portion and the second arm portion around a rotation axis extending in the second axial direction, the first arm portion has a first tip portion connected to the third wall portion of the projector via a first connection portion and a first base portion connected to the stand base, and has at least one bent portion between the first tip portion and the first base portion, and the second arm portion has a second connection portion and a second base portion connected to the stand base, and has at least one bend between the second tip portion and the second base portion, and when the projection system is used in a second position in which the optical axis extends in a third axis direction, when the projection system is viewed in a plane in the second axis direction, the area where the first speaker and the first arm overlap is smaller than the area of ​​the first speaker that does not overlap with the first arm.

[0006] One aspect of the present disclosure is a projection system including a projector, a stand base that supports the projection system when the projection system is installed, and a first arm and a second arm that are coupled to the projector and the stand base and connect the projector and the stand base, the projector having a projection lens, an exterior housing, and a speaker, the speaker having a first speaker and a second speaker, the exterior housing connecting the projection system to the projection lens, When used in a first posture in which the optical axis of the projection lens extends in a first axis direction, the projection lens has a first wall portion on which the projection lens is provided, a second wall portion facing an opposite side to the first wall portion in a direction along the first axis, a third wall portion and a fourth wall portion facing opposite sides to each other in a direction along a second axis perpendicular to the first axis, a fifth wall portion facing opposite sides to each other in a direction along a third axis perpendicular to the first axis and the second axis, and a sixth wall portion located vertically below the fifth wall portion, a speaker is disposed inside the exterior housing at a second corner formed by the second wall and the fourth wall, the projector is rotatable relative to the first arm and the second arm about a rotation axis extending in the second axial direction, the first arm has a first tip connected to the third wall of the projector via a first connection part, a first base connected to the stand base, and a first intermediate part connecting the first tip and the first base, and has at least one bent part between the first tip and the first base, and the second arm has a second connection part a second tip portion connected to the fourth wall portion of the projector via a second base portion connected to the stand base, and a second intermediate portion connecting the second tip portion and the second base portion, and at least one bent portion is provided between the second tip portion and the second base portion, and when the projection system is used in a second position in which the optical axis extends in a third axis direction, an area where the first speaker and the first arm portion overlap is smaller than an area of ​​the first speaker that does not overlap with the first arm portion when the projection system is viewed in a plane in the second axis direction.It is a projection system. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a projection system according to a first embodiment. [Figure 2] FIG. 1 is a perspective view of a projection system. [Figure 3] FIG. 1 is a side view of a projection system. [Figure 4] FIG. 1 is a side view of a projection system. [Figure 5] FIG. 10 is a side view of the projection system in a third position. [Figure 6] FIG. 10 is a side view of the projection system in a third position. [Figure 7] FIG. 10 is a side view of a projection system according to a second embodiment. [Figure 8] FIG. 10 is a side view of a projection system according to a second embodiment. [Figure 9] FIG. 10 is a side view of a projection system according to a third embodiment. [Figure 10] FIG. 10 is a side view of a projection system according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In each drawing, arrows indicate directions in an installed state of the projection system 1. The symbol UP indicates upward, the symbol FR indicates forward, and the symbol R indicates rightward. Although not shown, the opposite direction of the symbol UP indicates downward, the opposite direction of the symbol FR indicates backward, and the opposite direction of the symbol R indicates leftward. In addition, an axis parallel to the symbol FR is defined as the first axis, an axis parallel to the symbol R is defined as the second axis, and an axis parallel to the symbol UP is defined as the third axis. In the description, directions such as front-back, left-right, and up-down are based on the projection system 1 in FIG. 1 unless otherwise specified.

[0009] [1. Embodiment 1] 1 is a perspective view of a projection system 1 according to a first embodiment of the present disclosure, as viewed from above and front left of the projection system 1. FIG. 2 is a perspective view of the projection system 1, as viewed from below and rear left of the projection system 1.

[0010] The projection system 1 includes a projector 10 that projects an image and a stand 40 that supports the projector 10. The projector 10 is disposed on the stand 40 so as to be rotatable.

[0011] The projector 10 has an exterior housing 20 that is substantially rectangular parallelepiped in shape. The projector 10 of this embodiment has a sixth wall 26, side plate portions provided on the front, rear, left, and right sides of the sixth wall 26, and a fifth wall 25 provided opposite the sixth wall 26. The side plate portions are composed of a first wall 21, a second wall 22, a third wall 23, and a fourth wall 24.

[0012] The first wall portion 21 is provided with a projection lens 11 that projects image light such as moving images and still images from the projector 10. FIG. 1 shows the optical axis OA of the image light that the projection lens 11 projects onto a projection surface. The optical axis OA is the central axis of the projected image, and is, for example, a virtual axis that passes through the optical center of the projection lens 11. In FIG. 1, the image of the projector 10 is projected forward, and the optical axis OA is horizontal to the installation surface.

[0013] In this embodiment, the projection system 1 has a first posture in which the optical axis OA of the projector 10 is horizontal to the installation surface. Furthermore, the angle of the optical axis OA with respect to the horizontal in the first posture is set to 0 degrees, and a posture in which the first wall portion 21 is tilted downward within a range of the angle of the optical axis OA greater than 0 degrees and equal to or less than 90 degrees is set to a second posture. Furthermore, the angle in the first posture is set to 0 degrees, and a posture in which the first wall portion 21 is tilted upward within a range of the angle of the optical axis OA greater than 0 degrees and equal to or less than 90 degrees is set to a third posture.

[0014] 5, the projector 10 has a first corner 20L and a second corner 20R. The first corner 20L is formed by a second wall 22 and a third wall 23. The second corner 20R is formed by the second wall 22 and a fourth wall 24.

[0015] The projector 10 includes speakers 13 therein. The speakers 13 include a first speaker 13L disposed at the first corner 20L and a second speaker 13R disposed at the second corner 20R. In this embodiment, as shown in Fig. 3, the speakers 13 are disposed closer to the sixth wall 26 than the middle between the fifth wall 25 and the sixth wall 26 in a side view.

[0016] An output hole 14 is provided at the rear of the projector 10. The output hole 14 is formed from the third wall portion 23 to the second wall portion 22 and from the fourth wall portion 24 to the second wall portion 22, respectively. The projector 10 outputs sound output from the speaker 13 through the output hole 14 to the outside of the exterior housing 20. In this embodiment, as shown in FIG. 3 , the output hole 14 is provided closer to the sixth wall portion 26 than the midpoint between the fifth wall portion 25 and the sixth wall portion 26 in a side view, and overlaps with the speaker 13.

[0017] An exhaust section 15 is provided on the third wall section 23 and the fourth wall section 24 of the projector 10. The exhaust section 15 has a plurality of oval exhaust holes. The exhaust section 15 exhausts heat from the projector 10 using a fan provided inside the projector 10.

[0018] 3, the exhaust section 15 is provided closer to the fifth wall section 25 than the midpoint between the fifth wall section 25 and the sixth wall section 26 in a side view. This allows the projector 10 to easily release heat in the first position and efficiently exhaust heat. In addition, the exhaust heat from the exhaust section 15 is prevented from being transmitted to the speaker 13 and affecting the performance of the speaker 13.

[0019] The stand 40 includes a substantially disc-shaped stand base 30 and a pair of left and right stand frames 50 extending from the sides of the stand base 30. The stand 40 supports the projector 10 from the left and right by the stand frames 50. The projector 10 is held by the stand 40 in a state where it is suspended above the installation surface.

[0020] Fig. 3 is a side view of the projection system 1, as viewed from the left side of the projection system 1. Fig. 4 is a side view of the projection system 1, as viewed from the right side of the projection system 1.

[0021] The stand frame 50 has a first arm 50L and a second arm 50R. The stand frame 50 extends left and right from the front side of the stand base 30, and then extends rearward and upward to be connected to the projector. The first arm 50L is connected to the third wall 23 of the projector 10 by a first connection portion 54L.

[0022] The first arm 50L is integrally formed including a first tip 51L and a first base 52L. A first connection portion 54L is provided on the first tip 51L. The first tip 51L is connected to the third wall 23 of the projector 10 by the first connection portion 54L. The first base 52L is connected to the stand base 30.

[0023] The angle formed between the first tip portion 51L and the first base portion 52L is within a range of 90 degrees or more and 160 degrees or less. That is, the first arm portion 50L has a bent portion formed by the first tip portion 51L and the first base portion 52L in a side view. In other words, the first arm portion 50L is formed into a curved structure in a side view.

[0024] The first arm 50L and the second arm 50R are formed to have a symmetrical structure. That is, the second arm 50R is connected to the fourth wall 24 of the projector 10 by a second connecting portion 54R.

[0025] The second arm 50R is integrally formed with a second tip 51R and a second base 52R. A second connection 54R is provided on the second tip 51R. The second tip 51R is connected to the fourth wall 24 of the projector 10 by the second connection 54R. The second base 52R is connected to the stand base 30.

[0026] The angle formed between the second tip portion 51R and the second base portion 52R is in the range of 90 degrees or more and 160 degrees or less. That is, the second arm portion 50R has a bent portion formed by the second tip portion 51R and the second base portion 52R in a side view. In other words, the second arm portion 50R is formed into a curved structure in a side view.

[0027] The projector 10 can be rotated in the vertical direction relative to the stand 40 by the first connection part 54L and the second connection part 54R. That is, the projection system 1 can rotate the projector 10 in the vertical direction around a virtual line connecting the first connection part 54L and the second connection part 54R as a rotation axis.

[0028] The first connecting portion 54L and the second connecting portion 54R are provided midway between the first wall portion 21 and the second wall portion 22 in a side view. This positions the center of the projector 10 close to the rotation axis, thereby restricting the rotation of the projector 10 due to its own weight.

[0029] Fig. 5 is a side view of the projection system when the optical axis OA is at an angle of 90 degrees with respect to the horizontal in the third position, as viewed from the front of the projection system 1. Fig. 6 is a side view of the projection system when the optical axis OA is at an angle of 90 degrees with respect to the horizontal in the third position, as viewed from the left of the projection system 1.

[0030] 5, the first speaker 13L and the second speaker 13R are provided from the middle between the first wall portion 21 and the second wall portion 22 toward the second wall portion 22. That is, the first speaker 13L is provided between the first connecting portion 54L and the second wall portion 22. The second speaker 13R is provided between the second connecting portion 54R and the second wall portion 22. This prevents the exhaust heat from the exhaust portion 15 from being transmitted to the speaker 13 and affecting the performance of the speaker 13.

[0031] 6, because the stand frame 50 is curved, in the third position, of the area of ​​the first speaker 13L of the projector 10 in a side view, the area where the first speaker 13L and the first arm 50L overlap is smaller than the area where the first speaker 13L and the first arm 50L do not overlap. Similarly, of the area of ​​the second speaker 13R, the area where the second speaker 13R and the second arm 50R overlap is smaller than the area where the second speaker 13R and the second arm 50R do not overlap. Therefore, the area where the sound output from the speaker 13 is blocked by the stand frame 50 is reduced. In other words, the effect of the stand frame 50 on the sound output from the speaker 13 is suppressed.

[0032] [2. Embodiment 2] Embodiment 2 will be described. In embodiment 2, parts configured similarly to embodiment 1 above will be assigned the same reference numerals and descriptions thereof will be omitted. Furthermore, the first arm portion 150L and the second arm portion in embodiment 2 are bilaterally symmetrical as in embodiment 1, and descriptions thereof will be omitted.

[0033] 7 and 8 are side views of the projection system 1 in the third posture in embodiment 2, where the angle of the optical axis OA with respect to the horizontal is 90 degrees, as viewed from the left of the projection system 1. In other words, FIGS. 7 and 8 are views of the projector 10 rotated upward by 90 degrees.

[0034] In the first embodiment, the first arm 50L is configured such that the first tip 51L and the first base 52L are integral with each other. In the second embodiment, the first arm 150L is configured such that the first tip 151L and the first base 152L are separate from each other.

[0035] In the second embodiment, the other end of the first tip portion 151L and one end of the first base portion 152L are rotatably connected by a third connecting portion 155L. The angle formed between the first tip portion 151L and the first base portion 152L can be changed to an angle between 0 degrees and 90 degrees by rotation. This reduces the overlap between the first speaker 13L and the first arm 150L in a side view, thereby preventing the stand frame 50 from blocking the sound output from the output hole 14 and affecting the sound output from the speaker 13.

[0036] 3. Embodiment 3 Embodiment 3 will be described. In embodiment 3, parts configured similarly to embodiment 2 above will be assigned the same reference numerals and descriptions thereof will be omitted. Furthermore, the first arm portion 250L and the second arm portion in embodiment 3 are bilaterally symmetrical as in the above-described embodiments, and descriptions thereof will be omitted.

[0037] FIG. 9 is a side view of the projection system 1 in the third position according to the third embodiment, as viewed from the left.

[0038] In the second embodiment, the first arm 150L is configured with a first tip 151L and a first base 152L as separate bodies. In the third embodiment, the first arm 250L is formed with a first tip 251L, a first intermediate body 252L, and a first base 253L. The first tip 251L, the first intermediate body 252L, and the first base 253L are each configured as separate bodies.

[0039] One end of the first intermediate portion 252L and the other end of the first tip portion 251L are rotatably connected by a third connecting portion 255L. The other end of the first intermediate portion 252L is connected to one end of the first base portion 253L. The other end of the first base portion 253L is connected to the stand base 30.

[0040] The first arm portion 250L is formed such that the angle formed between the first tip portion 251L and the first base portion 253L is within a range of 90 degrees or more and 180 degrees or less. The angle formed between the first tip portion 251L and the first intermediate portion 252L is within a range of 90 degrees or more and 180 degrees or less. The angle formed between the first intermediate portion 252L and the first base portion 253L is within a range of 90 degrees or more and 180 degrees or less. In other words, the first arm portion 250L is formed into a curved structure by the first tip portion 251L, the first intermediate portion 252L, and the first base portion 253L in a side view.

[0041] Therefore, the overlap between the first speaker 13L and the first arm 250L is reduced in side view. In other words, the stand frame 50 is prevented from blocking the sound output from the output hole 14, and the effect on the sound output from the speaker 13 is suppressed.

[0042] [4. Embodiment 4] A description will be given of embodiment 4. In embodiment 4, parts configured in the same manner as in embodiment 2 above will be given the same reference numerals and descriptions thereof will be omitted.

[0043] FIG. 10 is a side view of the projection system 1 in the third position according to the fourth embodiment, as viewed from the left.

[0044] In the third embodiment, the first tip portion 251L, the first intermediate portion 252L, and the first base portion 253L are components that are substantially rectangular in side view. In the fourth embodiment, the first intermediate portion 252L is formed in a curved shape in side view.

[0045] Therefore, the overlap between the first speaker 13L and the first arm 350L is reduced in side view. In other words, the stand frame 50 is prevented from blocking the sound output from the output hole 14, and the effect on the sound output from the speaker 13 is suppressed.

[0046] 5. Other Embodiments The above-described embodiments merely show one mode in which the present disclosure is applied, and any modifications and applications are possible within the scope of the gist of the present disclosure.

[0047] In each of the above-described embodiments, the first arm 50L, 150L, ​​250L, 350L may be configured as a single body combining the first tip 51L, 151L, 251L, the first intermediate portion 252L, 352L, and the first base 52L, 152L, 253L, or may be configured as separate bodies. Similarly, the second arm in each embodiment may be configured as a single body or may be configured as separate bodies.

[0048] 6. Summary of the Disclosure A summary of this disclosure is provided below. (Supplementary Note 1) A projection system comprising: a projector; a base that supports the projection system when the projection system is installed; and a first arm and a second arm that are coupled to the projector and the stand base and connect the projector and the stand base, wherein the projector has a projection lens, an exterior housing, and a speaker, the speaker having a first speaker and a second speaker, and the exterior housing connects the projection system to the projection lens. When used in a first position in which the optical axis of the projection lens extends in a first axis direction, the projection lens has a first wall portion on which the projection lens is provided, a second wall portion facing an opposite side to the first wall portion in a direction along the first axis, a third wall portion and a fourth wall portion facing opposite sides to each other in a direction along a second axis perpendicular to the first axis, a fifth wall portion facing opposite sides to each other in a direction along a third axis perpendicular to the first axis and the second axis, and a sixth wall portion located vertically below the fifth wall portion, the second speaker is disposed at a first corner portion of the exterior housing, the second speaker is disposed at a second corner portion formed by the second wall portion and the fourth wall portion inside the exterior housing, the projector is rotatable relative to the first arm portion and the second arm portion around a rotation axis extending in the second axis direction, the first arm portion has a first tip portion connected to the third wall portion of the projector via a first connection portion and a first base portion connected to the stand base, and has at least one bend portion between the first tip portion and the first base, the second arm portion has a second tip portion connected to the fourth wall portion of the projector via a second connection portion and a second base portion connected to the stand base, and has at least one bend portion between the second tip portion and the second base, when the projection system is used in a second position in which the optical axis extends in the third axis direction, by viewing the projection system in a plane in the second axis direction, an overlapping area between the first speaker and the first arm is smaller than an overlapping area of ​​the first speaker that does not overlap with the first arm. This means that when the projection system is used in a position where the optical axis of the projection lens of the projector is facing vertically upward, the arms do not interfere with the sound output from the speakers, improving the sound output from the speakers.

[0049] (Appendix 2) A projection system as described in Appendix 1, wherein the connection portion between the first arm and the projector is located midway between the first wall portion and the second wall portion of the third wall portion when the projection system is viewed in a plane in the second axis direction, and the first speaker is located between the midway and the second wall portion. As a result, since the center of gravity of the projector is located near the middle, by arranging the connection part in the middle position, it is possible to suppress rotation of the projector due to its own weight. Therefore, in the first position, it is possible to prevent changes in the sound while the projection system is in use due to unintentional rotation of the projector.

[0050] (Appendix 3) The projection system described in Appendix 2, wherein the projector is provided with an exhaust section, and when the projection system is viewed in a plane in the second axis direction, the exhaust section is located closer to the fifth wall section than the midpoint between the fifth wall section and the sixth wall section, and the first speaker and the second speaker are located closer to the sixth wall section than the midpoint between the fifth wall section and the sixth wall section. As a result, hot air generated inside the projector rises upward in the first position, so it is preferable to provide the exhaust section closer to the fifth wall than the midpoint between the fifth and sixth walls. In this case, by providing the first speaker closer to the sixth wall than the midpoint between the fifth and sixth walls, the exhaust section can be provided without interfering with the speaker. In other words, the impact of heat exhausted from the exhaust section on speaker performance can be reduced.

[0051] (Appendix 4) A projection system described in any one of Appendices 1 to 3, wherein at least a portion of the first arm is bent at an angle of 90 degrees or more and 160 degrees or less at the bending portion of the first arm, and at least a portion of the second arm is bent at an angle of 90 degrees or more and 160 degrees or less at the bending portion of the second arm. This reduces interference of the arms with the sound output from the speaker when the projection system is used in a position where the optical axis of the projection lens of the projector faces vertically upward.

[0052] (Appendix 5) A projection system described in any one of Appendices 1 to 3, wherein the first tip portion and the first base portion are configured separately and are rotatably connected to each other, and the second tip portion and the second base portion are configured separately and are rotatably connected to each other. This makes it possible to adjust the area that the arm covers over the first speaker of the projector when the projection system is used in a position where the optical axis of the projection lens of the projector faces vertically upward, thereby reducing the interference of the arm with the sound output from the speaker.

[0053] (Appendix 6) A projection system described in any one of Appendices 1 to 3, wherein the first arm portion is configured integrally with the first tip portion and the first base portion, and the second arm portion is configured integrally with the second tip portion and the second base portion. This allows the projection system to maintain a more stable posture while in use, preventing unintended changes in the sound output from the speakers.

[0054] (Appendix 7) A projection system described in any one of Appendices 1 to 3, wherein at least a portion of the first arm is bent at an angle of 0 degrees or more and 90 degrees or less at the bending portion of the first arm, and at least a portion of the second arm is bent at an angle of 0 degrees or more and 90 degrees or less at the bending portion of the second arm. This reduces the interference caused by the arms with the quality of the sound output from the projector's speaker when the projection system is used in a position where the optical axis of the projector's projection lens is facing vertically upward.

[0055] (Appendix 8) A projection system described in any one of Appendices 1 to 3, wherein the first arm portion has a shape that curves at the bend of the first arm portion, and the second arm portion has a shape that curves at the bend of the second arm portion. This allows the arm to be shaped to bypass the first speaker when the projection system is used in a position where the optical axis of the projector's projection lens is facing vertically upward, thereby reducing the interference caused by the arm with the quality of the sound output from the projector's speaker.

[0056] (Supplementary Note 9) A projection system comprising: a projector; a base that supports the projection system when the projection system is installed; and a first arm and a second arm that are coupled to the projector and the stand base and connect the projector and the stand base, wherein the projector has a projection lens, an exterior housing, and a speaker, the speaker having a first speaker and a second speaker, and the exterior housing is configured to project the projection system in a direction such that the optical axis of the projection lens is aligned in a first axis direction. When used in a first posture in which the projection lens extends, the projection lens has a first wall portion on which the projection lens is provided, a second wall portion facing an opposite side to the first wall portion in a direction along the first axis, a third wall portion and a fourth wall portion facing opposite sides to each other in a direction along a second axis perpendicular to the first axis, a fifth wall portion facing opposite sides to each other in a direction along a third axis perpendicular to the first axis and the second axis, and a sixth wall portion located vertically below the fifth wall portion, The projector is disposed inside the housing at a second corner formed by the second wall and the fourth wall, and the projector is rotatable relative to the first arm and the second arm about a rotation axis extending in the second axial direction, the first arm having a first tip connected to the third wall of the projector via a first connection part, a first base connected to the stand base, and a first intermediate part connecting the first tip and the first base, and having at least one bent part between the first tip and the first base, and the second arm being connected to the projector via a second connection part. a second tip portion connected to the fourth wall portion of the stand, a second base portion connected to the stand base, and a second intermediate portion connecting the second tip portion and the second base portion, and at least one bend portion is provided between the second tip portion and the second base portion, and when the projection system is used in a second position in which the optical axis extends in a third axis direction, when the projection system is viewed in a plane in the second axis direction, the area where the first speaker and the first arm overlap is smaller than the area of ​​the first speaker that does not overlap with the first arm. This reduces interference of the arms with the sound output from the speaker when the projection system is used in a position where the optical axis of the projection lens of the projector faces vertically upward.

[0057] (Appendix 10) The projection system described in Appendix 9, wherein, when the projection system is viewed in a plane in the second axis direction, the first connection portion is located in the middle between the first wall portion and the second wall portion of the third wall portion, and the first speaker is located between the middle and the second wall portion; and when the projection system is viewed in a plane in the second axis direction, the second connection portion is located in the middle between the first wall portion and the second wall portion of the fourth wall portion, and the second speaker is located between the middle and the second wall portion. As a result, since the center of gravity of the projector is located near the middle, by locating the connection part in the middle position, it is possible to suppress rotation of the projector due to its own weight. This makes it possible to reduce changes in sound quality during use, which would otherwise occur when the first position is in the first position and would be caused by the projector's own weight.

[0058] (Appendix 11) The projection system described in Appendix 10, wherein the projector is provided with an exhaust section, and when the projection system is viewed in a plane in the second axis direction, the exhaust section is located closer to the fifth wall section than the midpoint between the fifth wall section and the sixth wall section, and the speaker is located closer to the sixth wall section than the midpoint between the fifth wall section and the sixth wall section. By positioning the first speaker closer to the sixth wall than the middle point between the fifth and sixth walls, the exhaust section can be positioned without interfering with the speaker, reducing the impact of heat emitted from the exhaust section on speaker performance.

[0059] (Appendix 12) The projection system described in any one of Appendices 9 to 11, wherein, in the first arm, the angle formed by the first tip end and the first base end is within a range of 90 degrees or more and 180 degrees or less, the angle formed by the first tip end and the first intermediate end is within a range of 90 degrees or more and 180 degrees or less, and the angle formed by the first intermediate end and the first base end is within a range of 90 degrees or more and 180 degrees or less, and in the second arm, the angle formed by the second tip end and the second base end is within a range of 90 degrees or more and 180 degrees or less, the angle formed by the second tip end and the second intermediate end is within a range of 90 degrees or more and 180 degrees or less, and the angle formed by the second intermediate end and the second base end is within a range of 90 degrees or more and 180 degrees or less. This reduces interference of the arms with the sound output from the speaker when the projection system is used in a position where the optical axis of the projection lens of the projector faces vertically upward.

[0060] (Appendix 13) A projection system as described in Appendix 12, wherein the first tip portion, the first base portion, and the first intermediate portion are each configured separately and are rotatably connected to each other, and the second tip portion, the second base portion, and the second intermediate portion are each configured separately and are rotatably connected to each other. This makes it possible to adjust the area that the arm covers over the first speaker of the projector when the projection system is used in a position where the optical axis of the projection lens of the projector faces vertically upward, thereby reducing the interference of the arm with the sound output from the speaker.

[0061] (Appendix 14) A projection system as described in Appendix 12, wherein the first tip portion, the first base portion, and the first intermediate portion are integrally configured, and the second tip portion, the second base portion, and the second intermediate portion are integrally configured. This prevents the first tip portion from rotating relative to the second portion when the projection system is in use, thereby stabilizing the position of the projection system and reducing changes in the quality of the sound output from the speaker. [Explanation of symbols]

[0062] 1...Projection system, 10...Projector, 11...Projection lens, 13...Speaker, 13L...First speaker, 13R...Second speaker, 14...Output hole, 15...Exhaust section, 20...Exterior housing, 20L...First corner section, 20R...Second corner section, 21...First wall section, 22...Second wall section, 23...Third wall section, 24...Fourth wall section, 25...Fifth wall section, 26...Sixth wall section, 30...Stand base, 40...Stand, 50...Stand frame, 50L...Third 1 arm, 50R...second arm, 51L...first tip, 51R...second tip, 52L...first base, 52R...second base, 54L...first connection, 54R...second connection, 150L...first arm, 151L...first tip, 152L...first base, 155L...third connection, 250L...first arm, 251L...first tip, 252L...first intermediate part, 253L...first base, 255L...third connection, 350L...first arm, 352L...first intermediate part, OA...optical axis.

Claims

1. 1. A projection system comprising: a projector; a stand base that supports the projection system when the projection system is installed; and a first arm and a second arm that are coupled to the projector and the stand base and connect the projector and the stand base, the projector has a projection lens, an exterior housing, and a speaker; The speaker includes a first speaker and a second speaker, When the projection system is used in a first position in which the optical axis of the projection lens extends in a first axis direction, the exterior housing has: a first wall portion on which the projection lens is provided; a second wall portion facing opposite to the first wall portion in a direction along the first axis; a third wall portion and a fourth wall portion facing opposite to each other in a direction along a second axis perpendicular to the first axis; a fifth wall portion facing opposite to each other in a direction along a third axis perpendicular to the first axis and the second axis; and a sixth wall portion located vertically below the fifth wall portion; the first speaker is disposed inside the exterior housing at a first corner formed by the second wall portion and the third wall portion, the second speaker is disposed inside the exterior housing at a second corner formed by the second wall portion and the fourth wall portion, the projector is rotatable relative to the first arm and the second arm about a rotation axis extending in the second axis direction; the first arm has a first tip portion connected to the third wall portion of the projector via a first connection portion and a first base portion connected to the stand base, and has at least one bent portion between the first tip portion and the first base portion; the second arm has a second tip portion connected to the fourth wall portion of the projector via a second connection portion and a second base portion connected to the stand base, and has at least one bent portion between the second tip portion and the second base portion; when the projection system is used in a second posture in which the optical axis extends in a third axis direction, an area where the first speaker and the first arm portion overlap is smaller than an area of ​​the first speaker that does not overlap with the first arm portion when the projection system is viewed in a plan view in the second axis direction; Projection system.

2. the first connection portion between the first arm portion and the projector is located in the third wall portion at a midpoint between the first wall portion and the second wall portion when the projection system is viewed in a plan view in the second axis direction; the first speaker is located between the middle and the second wall portion; The projection system according to claim 1 .

3. the projector includes an exhaust unit; when the projection system is viewed in a plan view in the second axis direction, the exhaust section is provided on the fifth wall section side from an intermediate point between the fifth wall section and the sixth wall section, the first speaker and the second speaker are provided on the sixth wall portion side from an intermediate point between the fifth wall portion and the sixth wall portion, The projection system according to claim 2 .

4. At least a portion of the first arm is bent at an angle of 90 degrees or more and 160 degrees or less at a bent portion of the first arm, At least a portion of the second arm is bent at an angle of 90 degrees or more and 160 degrees or less at a bending portion of the second arm.

4. The projection system according to claim 1.

5. The first tip portion and the first base portion are configured as separate bodies and are rotatably connected to each other, The second tip portion and the second base portion are configured as separate bodies and are rotatably connected to each other.

4. The projection system according to claim 1.

6. the first arm portion is integrally formed including the first tip portion and the first base portion, The second arm portion is integrally formed including the second tip portion and the second base portion.

4. The projection system according to claim 1.

7. At least a portion of the first arm is bent at an angle of 0 degrees or more and 90 degrees or less at a bent portion of the first arm, At least a portion of the second arm is bent at an angle of 0 degrees or more and 90 degrees or less at a bending portion of the second arm.

4. The projection system according to claim 1.

8. The first arm portion has a shape that is curved at a bent portion of the first arm portion, and the second arm portion has a shape that is curved at a bent portion of the second arm portion.

4. The projection system according to claim 1.

9. 1. A projection system comprising: a projector; a stand base that supports the projection system when the projection system is installed; and a first arm and a second arm that are coupled to the projector and the stand base and connect the projector and the stand base, the projector has a projection lens, an exterior housing, and a speaker; The speaker includes a first speaker and a second speaker, When the projection system is used in a first position in which the optical axis of the projection lens extends in a first axis direction, the exterior housing has: a first wall portion on which the projection lens is provided; a second wall portion facing opposite to the first wall portion in a direction along the first axis; a third wall portion and a fourth wall portion facing opposite to each other in a direction along a second axis perpendicular to the first axis; a fifth wall portion facing opposite to each other in a direction along a third axis perpendicular to the first axis and the second axis; and a sixth wall portion located vertically below the fifth wall portion; the first speaker is disposed inside the exterior housing at a first corner formed by the second wall portion and the third wall portion, the second speaker is disposed inside the exterior housing at a second corner formed by the second wall portion and the fourth wall portion, the projector is rotatable relative to the first arm and the second arm about a rotation axis extending in the second axis direction; the first arm portion has a first tip portion connected to the third wall portion of the projector via a first connection portion, a first base portion connected to the stand base, and a first intermediate portion connecting the first tip portion and the first base portion, and has at least one bent portion between the first tip portion and the first base portion; the second arm portion has a second tip portion connected to the fourth wall portion of the projector via a second connection portion, a second base portion connected to the stand base, and a second intermediate portion connecting the second tip portion and the second base portion, and has at least one bent portion between the second tip portion and the second base portion; when the projection system is used in a second posture in which the optical axis extends in a third axis direction, an area where the first speaker and the first arm portion overlap is smaller than an area of ​​the first speaker that does not overlap with the first arm portion when the projection system is viewed in a plan view in the second axis direction; Projection system.

10. the first connection portion is located in a middle between the first wall portion and the second wall portion of the third wall portion when the projection system is viewed in a plan view in the second axis direction, and the first speaker is located between the middle and the second wall portion. the second connection portion is located in a middle between the first wall portion and the second wall portion of the fourth wall portion when the projection system is viewed in a plan view in the second axis direction, and the second speaker is located between the middle and the second wall portion. The projection system according to claim 9 .

11. the projector includes an exhaust unit, when the projection system is viewed in a plan view in the second axis direction, the exhaust section is provided closer to the fifth wall section than an intermediate portion between the fifth wall section and the sixth wall section, the speaker is provided closer to the sixth wall portion than the midpoint between the fifth wall portion and the sixth wall portion; The projection system according to claim 10.

12. In the first arm portion, an angle between the first tip portion and the first base portion in the range of 90 degrees or more and 180 degrees or less; an angle formed between the first tip portion and the first intermediate portion within a range of 90 degrees or more and 180 degrees or less; an angle between the first intermediate portion and the first base portion is within a range of 90 degrees or more and 180 degrees or less; In the second arm portion, an angle between the second tip portion and the second base portion in the range of 90 degrees or more and 180 degrees or less; an angle between the second tip portion and the second intermediate portion in the range of 90 degrees or more and 180 degrees or less; the angle between the second intermediate portion and the second base portion is in the range of 90 degrees or more and 180 degrees or less; 12. The projection system according to claim 9, wherein the projection system comprises:

13. the first tip portion, the first base portion, and the first intermediate portion are configured as separate bodies and are rotatably connected to one another; The second tip portion, the second base portion, and the second intermediate portion are configured separately from each other and are rotatably connected to each other. The projection system according to claim 12.

14. the first tip portion, the first base portion, and the first intermediate portion are integrally formed, The second tip portion, the second base portion, and the second intermediate portion are integrally formed. The projection system according to claim 12.

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