Projection system

Abstract

The utility model provides a projection system, which is characterized in that in the structure that a projector is provided with a projector bracket, the projector bracket suppresses the influence on the output of sound from a loudspeaker. The projection system includes a projector, a holder base, a first arm portion, and a second arm portion, an exterior case of the projector includes a first wall portion, a second wall portion, a third wall portion, a fourth wall portion, a fifth wall portion, and a sixth wall portion, a first speaker of the projector is disposed at a first corner portion formed by the second wall portion and the third wall portion, and a second speaker of the projector is disposed at a second corner portion formed by the second wall portion and the third wall portion. The second speaker is disposed at a second corner portion formed by the second wall portion and the fourth wall portion, and when the projection system is used in a second posture in which the optical axis extends in the third axis direction, the projection system is viewed in plan view in the second axis direction. A region where the first speaker overlaps the first arm portion is smaller than a region where the first speaker does not overlap the first arm portion.

Description

TECHNICAL FIELD

[0001] The utility model relates to a projection system. BACKGROUND

[0002] Conventionally, a projector having a speaker disposed in an outer casing is known (for example, see Patent Document 1). In the projector described in Patent Document 1, a speaker is disposed at the left and right corner portions on the back side opposite the front side on which an image is projected.

[0003] In addition, in a projector in which an image is projected, a projector having a projector support table that supports the projector in a rotatable manner is known (for example, see Patent Document 2). In such a projector, a user can arbitrarily adjust the direction of the image light projected by the projector.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2022-143004

[0005] Patent Document 2: Japanese Patent Application Publication No. 2016-027369

[0006] When a projector support table is applied to a projector having a speaker, the projector support table blocks the sound output port, and there is concern that the output of sound from the speaker will be affected. SUMMARY

[0007] One embodiment of the present disclosure is a projection system including a projector, a stand base that supports the projection system in a set state of the projection system, and a first arm portion and a second arm portion that are connected to the projector and the stand base and connect the projector and the stand base, the projector including a projection lens, an outer casing, and a speaker including a first speaker and a second speaker, the outer casing including a first wall portion in which the projection lens is provided, a second wall portion that faces a side opposite to the first wall portion in a direction of a first axis along which the projection lens is disposed, a third wall portion and a fourth wall portion that face opposite sides of each other in a direction of a second axis perpendicular to the first axis, and a fifth wall portion and a sixth wall portion that face opposite sides of each other in a direction of a third axis perpendicular to the first axis and the second axis, the sixth wall portion being lower than the fifth wall portion in a vertical direction, the first speaker being disposed in a first corner portion constituted by the second wall portion and the third wall portion inside the outer casing, the second speaker being disposed in a second corner portion constituted by the second wall portion and the fourth wall portion inside the outer casing, the projector being capable of relatively rotating with respect to the first arm portion and the second arm portion about a rotation axis extending in the direction of the second axis, the first arm portion including a first end 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, the first end portion and the first base portion having at least one bent portion therebetween, the second arm portion including a second end 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, the second end portion and the second base portion having at least one bent portion therebetween, in a case where the projection system is used in a second posture in which the optical axis extends in a direction of a third axis, an area in which the first speaker overlaps with the first arm portion is smaller than an area in which the first speaker does not overlap with the first arm portion when the projection system is viewed from above in the direction of the second axis.

[0008] One embodiment of the present disclosure is a projection system including a projector, a stand base that supports the projection system in a set state of the projection system, and a first arm portion and a second arm portion that are connected to the projector and the stand base, and connect the projector and the stand base, the projector including a projection lens, an outer casing, and a speaker including a first speaker and a second speaker, the outer casing including a first wall portion in which the projection lens is provided, a second wall portion that faces a side opposite to the first wall portion in a direction of a first axis along which an optical axis of the projection lens extends, a third wall portion and a fourth wall portion that face each other in a direction of a second axis perpendicular to the first axis, and a fifth wall portion and a sixth wall portion that face each other in a direction of a third axis perpendicular to the first axis and the second axis, the sixth wall portion being lower than the fifth wall portion in a vertical direction, the first speaker being disposed in a first corner portion constituted by the second wall portion and the third wall portion in an inside of the outer casing, and the second speaker being disposed in a second corner portion constituted by the second wall portion and the fourth wall portion in the inside of the outer casing, the projector being capable of relatively rotating with respect to the first arm portion and the second arm portion about a rotation axis extending in the direction of the second axis, the first arm portion including 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, the first tip portion and the first base portion having at least one bent portion therebetween, the second arm portion including 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, the second tip portion and the second base portion having at least one bent portion therebetween, in a case where the projection system is used in a second posture in which the optical axis extends in a direction of a third axis, the projection system is viewed from above in the direction of the second axis, and an area in which the first speaker overlaps with the first arm portion is smaller than an area in which the first speaker does not overlap with the first arm portion. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 FIG. 1 is a perspective view of a projection system according to Embodiment 1.

[0010] Figure 2 FIG. 2 is a perspective view of the projection system.

[0011] Figure 3 FIG. 3 is a side view of the projection system.

[0012] Figure 4 is a side view of the projection system.

[0013] Figure 5 is a side view of the projection system in the third posture.

[0014] Figure 6 is a side view of the projection system in the third posture.

[0015] Figure 7 is a side view of the projection system of Embodiment 2.

[0016] Figure 8 is a side view of the projection system of Embodiment 2.

[0017] Figure 9 is a side view of the projection system of Embodiment 3.

[0018] Figure 10 is a side view of the projection system of Embodiment 4.

[0019] Explanation of Reference Signs

[0020] 1: projection system; 10: projector; 11: projection lens; 13: speaker; 13L: first speaker; 13R: second speaker; 14: output hole; 15: exhaust portion; 20: outer housing; 20L: first corner portion; 20R: second corner portion; 21: first wall portion; 22: second wall portion; 23: third wall portion; 24: fourth wall portion; 25: fifth wall portion; 26: sixth wall portion; 30: support base; 40: support; 50: support frame; 50L: first arm portion; 50R: second arm portion; 51L: first end portion; 51R: second end portion; 52L: first base portion; 52R: second base portion; 54L: first connection portion; 54R: second connection portion; 150L: first arm portion; 151L: first end portion; 152L: first base portion; 155L: third connection portion; 250L: first arm portion; 251L: first end portion; 252L: first intermediate portion; 253L: first base portion; 255L: third connection portion; 350L: first arm portion; 352L: first intermediate portion; OA: optical axis. DETAILED DESCRIPTION

[0021] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the drawings, the direction in the set state of the projection system 1 is indicated by an arrow. The symbol UP indicates the upper side, the symbol FR indicates the front side, and the symbol R indicates the right side. Although not illustrated, the opposite direction of the symbol UP indicates the lower side, the opposite direction of the symbol FR indicates the rear side, and the opposite direction of the symbol R indicates the left side. In addition, an axis parallel to the symbol FR is defined as a first axis, an axis parallel to the symbol R is defined as a second axis, and an axis parallel to the symbol UP is defined as a third axis. In the description, if not specifically described, the description of the directions such as the front and rear, the left and right, and the upper and lower is made in the order of the first axis, the second axis, and the third axis. Figure 1 The projection system 1 is a reference for the following description.

[0022] [1. Embodiment 1]

[0023] Figure 1 is a perspective view of the projection system 1 to which Embodiment 1 of the present disclosure is applied, and is a view of the entire projection system 1 viewed from the left front upper side. Figure 2 is a perspective view of the projection system 1, and is a view of the projection system 1 viewed from the left rear lower side.

[0024] 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 configured to be able to rotate with respect to the stand 40.

[0025] The projector 10 has a substantially rectangular parallelepiped-shaped outer casing 20. The projector 10 of the present embodiment has a sixth wall portion 26, side plate portions provided to the front, the rear, the left, and the right of the sixth wall portion 26, and a fifth wall portion 25 provided to be opposed to the sixth wall portion 26. The side plate portions are constituted by a first wall portion 21, a second wall portion 22, a third wall portion 23, and a fourth wall portion 24.

[0026] A projection lens 11 that projects an image light of a dynamic image, a still image, or the like from the projector 10 is provided to the first wall portion 21. Figure 1 An optical axis OA of the image light projected by the projection lens 11 to a projection surface is illustrated. The optical axis OA is a central axis of the projected image, and is, for example, an imaginary axis that passes through the optical center of the projection lens 11. In the following description, the direction of the optical axis OA is indicated by an arrow. Figure 1 In the present embodiment, the image of the projector 10 is projected toward the front, and the optical axis OA is horizontal to the setting surface.

[0027] In the present embodiment, the projection system 1 takes a state in which the optical axis OA of the projector 10 is horizontal to the setting surface as a first posture. In addition, the angle formed by 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 inclined to the lower side in a range in which the angle formed by the optical axis OA is greater than 0 degrees and is 90 degrees or less is taken as a second posture. Furthermore, the angle formed in the first posture is set to 0 degrees, and a posture in which the first wall portion 21 is inclined to the upper side in a range in which the angle formed by the optical axis OA is greater than 0 degrees and is 90 degrees or less is taken as a third posture.

[0028] As Figure 5 shown, the projector 10 has a first corner portion 20L and a second corner portion 20R. The first corner portion 20L is formed by a second wall portion 22 and a third wall portion 23. The second corner portion 20R is formed by the second wall portion 22 and a fourth wall portion 24.

[0029] The projector 10 has a speaker 13 inside. The speaker 13 has a first speaker 13L disposed in the first corner portion 20L and a second speaker 13R disposed in the second corner portion 20R. In the present embodiment, as Figure 3 shown, in a side view, the speaker 13 is disposed closer to the sixth wall portion 26 side than the middle of the fifth wall portion 25 and the sixth wall portion 26.

[0030] An output hole 14 is provided in the rear portion 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 housing 20. In the present embodiment, as Figure 3 shown, in a side view, the output hole 14 is disposed closer to the sixth wall portion 26 side than the middle of the fifth wall portion 25 and the sixth wall portion 26 and overlaps the speaker 13.

[0031] An exhaust portion 15 is provided in the third wall portion 23 and the fourth wall portion 24 of the projector 10. The exhaust portion 15 is provided with a plurality of long circular exhaust holes. The exhaust portion 15 exhausts heat of the projector 10 by a fan provided inside the projector 10.

[0032] As Figure 3 shown, in a side view, the exhaust portion 15 is disposed closer to the fifth wall portion 25 side than the middle of the fifth wall portion 25 and the sixth wall portion 26. Thus, the projector 10 is easily heat-dissipated in the first posture, and heat dissipation is efficiently performed. In addition, heat waste of the exhaust portion 15 is suppressed from being transferred to the speaker 13 to affect the performance of the speaker 13.

[0033] The stand 40 has a substantially disc-shaped stand base 30 and a pair of left and right stand frames 50 extending from the side portions 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 of floating from the placement surface.

[0034] Figure 3 is a side view of the projection system 1, which is a view of the projection system 1 as viewed from the left. Figure 4 is a side view of the projection system 1, which is a view of the projection system 1 as viewed from the right.

[0035] The stand frame 50 has a first arm portion 50L and a second arm portion 50R. The stand frame 50 extends to the left and right from the front surface side of the stand base 30, and then extends rearward and upward to be coupled to the projector. The first arm portion 50L is coupled to the third wall portion 23 of the projector 10 via a first coupling portion 54L.

[0036] The first arm portion 50L is formed in one piece including a first tip portion 51L and a first base portion 52L. The first coupling portion 54L is provided to the first tip portion 51L. The first tip portion 51L is coupled to the third wall portion 23 of the projector 10 via the first coupling portion 54L. The first base portion 52L is coupled to the stand base 30.

[0037] An angle formed by the first tip portion 51L and the first base portion 52L is formed in a range of 90 degrees or more and 160 degrees or less. That is, the first arm portion 50L forms a bent portion by the first tip portion 51L and the first base portion 52L when viewed in side view. In other words, the first arm portion 50L is formed in a configuration that is bent when viewed in side view.

[0038] The first arm portion 50L and the second arm portion 50R are formed in left-right symmetry. That is, the second arm portion 50R is coupled to the fourth wall portion 24 of the projector 10 via a second coupling portion 54R.

[0039] The second arm portion 50R is formed in one piece including a second tip portion 51R and a second base portion 52R. The second coupling portion 54R is provided to the second tip portion 51R. The second tip portion 51R is coupled to the fourth wall portion 24 of the projector 10 via the second coupling portion 54R. The second base portion 52R is coupled to the stand base 30.

[0040] An angle formed by the second tip portion 51R and the second base portion 52R is formed in a range of 90 degrees or more and 160 degrees or less. That is, the second arm portion 50R forms a bent portion by the second tip portion 51R and the second base portion 52R when viewed in side view. In other words, the second arm portion 50R is formed in a configuration that is bent when viewed in side view.

[0041] The projector 10 is rotatable in the up-down direction with respect to the stand 40 by means of the first coupling portion 54L and the second coupling portion 54R. That is, the projection system 1 is capable of rotating the projector 10 in the up-down direction with an imaginary line coupling the first coupling portion 54L and the second coupling portion 54R as a rotation axis.

[0042] The first coupling portion 54L and the second coupling portion 54R are provided to the middle of the first wall portion 21 and the second wall portion 22 when viewed in side view. Thus, the center of the projector 10 and the rotation axis are disposed in close proximity, and therefore, the rotation of the projector 10 due to the weight of the projector 10 is limited.

[0043] Figure 5Fig. 10 is a side view of the projection system when the angle that the optical axis OA makes with the horizontal is 90 degrees in the third posture, and is a view of the projection system 1 as seen from the front. Figure 6 Fig. 11 is a side view of the projection system when the angle that the optical axis OA makes with the horizontal is 90 degrees in the third posture, and is a view of the projection system 1 as seen from the left.

[0044] As shown in Fig. 12, the first speaker 13L and the second speaker 13R are disposed closer to the second wall portion 22 than to the middle of the first wall portion 21 and the second wall portion 22. That is, the first speaker 13L is disposed between the first connecting portion 54L and the second wall portion 22. The second speaker 13R is disposed between the second connecting portion 54R and the second wall portion 22. Therefore, the exhaust portion 15 is inhibited from transferring the waste heat to the speakers 13 and from affecting the performance of the speakers 13. Figure 5

[0045] As shown in Fig. 13, since the support frame 50 is curvedly disposed, in a side view, in the third posture, the area of the first speaker 13L in which the first speaker 13L overlaps the first arm portion 50L is less than the area of the first speaker 13L in which the first speaker 13L does not overlap the first arm portion 50L. Similarly, the area of the second speaker 13R in which the second speaker 13R overlaps the second arm portion 50R is less than the area of the second speaker 13R in which the second speaker 13R does not overlap the second arm portion 50R. Therefore, the area in which the output sound from the speakers 13 is blocked by the support frame 50 is reduced. That is, the support frame 50 is inhibited from affecting the output of the sound from the speakers 13. Figure 6

[0046] [2. Embodiment 2]

[0047] Embodiment 2 will be described. In Embodiment 2, portions that are similarly configured as in Embodiment 1 described above are labeled with the same reference numerals and the description thereof will be omitted. In addition, the first arm portion 150L and the second arm portion in Embodiment 2 are left-right symmetrical as in Embodiment 1, and thus the description thereof will be omitted.

[0048] Figure 7 Fig. 14 is a side view of the projection system 1 in Embodiment 2 when the angle that the optical axis OA makes with the horizontal is 90 degrees in the third posture, and is a view of the projection system 1 as seen from the left. In other words, Fig. 14 is a view of the projection system 1 as seen from the left when the projection apparatus 10 is turned upward by 90 degrees. Figure 8 Fig. 15 is a side view of the projection system 1 in Embodiment 2 when the angle that the optical axis OA makes with the horizontal is 90 degrees in the third posture, and is a view of the projection system 1 as seen from the front. In other words, Fig. 15 is a view of the projection system 1 as seen from the front when the projection apparatus 10 is turned upward by 90 degrees. Figure 7 Fig. 16 is a side view of the projection system 1 in Embodiment 2 when the angle that the optical axis OA makes with the horizontal is 90 degrees in the third posture, and is a view of the projection system 1 as seen from the left. In other words, Fig. 16 is a view of the projection system 1 as seen from the left when the projection apparatus 10 is turned upward by 90 degrees. Figure 8 Fig. 17 is a side view of the projection system 1 in Embodiment 2 when the angle that the optical axis OA makes with the horizontal is 90 degrees in the third posture, and is a view of the projection system 1 as seen from the front. In other words, Fig. 17 is a view of the projection system 1 as seen from the front when the projection apparatus 10 is turned upward by 90 degrees.

[0049] In Embodiment 1, the first arm portion 50L is configured as a unit of the first tip portion 51L and the first base portion 52L. In Embodiment 2, the first arm portion 150L is configured as a unit of the first tip portion 151L and the first base portion 152L. ​​

[0050] In Embodiment 2, the other side end portion of the first end portion 151L is linked to the one side end portion of the first base portion 152L by the third connecting portion 155L in a rotatable manner. By the rotation, the angle formed by the first end portion 151L and the first base portion 152L can be deformed to an angle of 0 degrees or more and 90 degrees or less.

[0051] Thus, in a side view, the overlap of the first speaker 13L and the first arm portion 150L is reduced. Therefore, the sound output from the output hole 14 is suppressed from being blocked by the stand frame 50, and the output of the sound from the speaker 13 is suppressed from being affected.

[0052] [3. Embodiment 3]

[0053] Embodiment 3 will be described. In Embodiment 3, the same reference numerals are given to the portions configured similarly to Embodiment 2 described above, and the description thereof will be omitted. In addition, the first arm portion 250L and the second arm portion in Embodiment 3 are left-right symmetrical similarly to each of the above-described embodiments, and thus the description thereof will be omitted.

[0054] Figure 9 is a side view of the projection system 1 in the third posture in Embodiment 3, and is a view of the projection system 1 observed from the left side.

[0055] In Embodiment 2, the first arm portion 150L is configured by the first end portion 151L and the first base portion 152L as separate bodies. In Embodiment 3, the first arm portion 250L is formed by a first end portion 251L, a first intermediate portion 252L, and a first base portion 253L. The first end portion 251L, the first intermediate portion 252L, and the first base portion 253L are configured as separate bodies, respectively.

[0056] The one side end portion of the first intermediate portion 252L and the other side end portion of the first end portion 251L are linked by the third connecting portion 255L in a rotatable manner. The other side end portion of the first intermediate portion 252L and the one side end portion of the first base portion 253L are linked. The other side end portion of the first base portion 253L and the stand base 30 are linked.

[0057] The angle formed by the first end portion 251L of the first arm portion 250L and the first base portion 253L is formed in a range of 90 degrees or more and 180 degrees or less. In addition, the angle formed by the first end portion 251L and the first intermediate portion 252L is formed in a range of 90 degrees or more and 180 degrees or less. Furthermore, the angle formed by the first intermediate portion 252L and the first base portion 253L is formed in a range of 90 degrees or more and 180 degrees or less. That is, in a side view, the first arm portion 250L is formed in a configuration bent by the first end portion 251L, the first intermediate portion 252L, and the first base portion 253L.

[0058] Accordingly, the overlap of the first speaker 13L and the first arm portion 250L is reduced when viewed from the side. That is, the sound output from the output hole 14 is prevented from being blocked by the stand frame 50, and the output of sound from the speaker 13 is prevented from being affected.

[0059] [4. Embodiment 4]

[0060] Embodiment 4 will be described. In Embodiment 4, portions configured similarly to those of Embodiment 2 described above are denoted by the same reference numerals and the description thereof will be omitted.

[0061] Figure 10 is a side view of the projection system 1 in the third posture in Embodiment 4, and is a view of the projection system 1 viewed from the left.

[0062] In Embodiment 3, the first tip portion 251L, the first intermediate portion 252L, and the first base portion 253L are members in a substantially rectangular shape when viewed from the side. In Embodiment 4, the first intermediate portion 352L is formed in a curved shape when viewed from the side.

[0063] Accordingly, the overlap of the first speaker 13L and the first arm portion 350L is reduced when viewed from the side. That is, the sound output from the output hole 14 is prevented from being blocked by the stand frame 50, and the output of sound from the speaker 13 is prevented from being affected.

[0064] [5. Other Embodiments]

[0065] The above-described embodiments are merely one way of applying the present disclosure, and can be arbitrarily modified and applied without departing from the spirit of the present disclosure.

[0066] In the above-described embodiments, the first arm portion 50L, 150L, 250L, 350L can be configured as one body in which the first tip portion 51L, 151L, 251L, the first intermediate portion 252L, 352L, and the first base portion 52L, 152L, 253L are combined, or can be configured as a separate body. The second arm portion in each of the embodiments can also be configured as one body or as a separate body.

[0067] [6. Summary of the Present Disclosure]

[0068] Hereinafter, a summary of the present disclosure will be described.

[0069] (Auxiliary Note 1) A projection system having a projector, a stand base that supports the projection system in a set state of the projection system, and a first arm portion and a second arm portion that are linked with the projector and the stand base to connect the projector and the stand base, the projector having a projection lens, an outer casing, and a speaker having a first speaker and a second speaker, the outer casing having, in a case where the projection system is used in a first posture in which an optical axis of the projection lens extends in a first axis direction, a first wall portion that is provided with the projection lens, a second wall portion that is directed toward a side opposite to the first wall portion in a direction along the first axis, a third wall portion and a fourth wall portion that are directed toward opposite sides to each other in a direction along a second axis that is perpendicular to the first axis, and a fifth wall portion and a sixth wall portion that are directed toward opposite sides to each other in a direction along a third axis that is perpendicular to the first axis and the second axis, the sixth wall portion being lower than the fifth wall portion in a vertical direction, the first speaker being disposed in a first corner portion constituted by the second wall portion and the third wall portion inside the outer casing, and the second speaker being disposed in a second corner portion constituted by the second wall portion and the fourth wall portion inside the outer casing, the projector being relatively rotatable with respect to the first arm portion and the second arm portion about a rotation axis that extends in the second axis direction, the first arm portion having a first tip portion connected with the third wall portion of the projector via a first connection portion, and a first base portion linked with the stand base, at least one bent portion being present between the first tip portion and the first base portion, the second arm portion having a second tip portion connected with the fourth wall portion of the projector via a second connection portion, and a second base portion linked with the stand base, at least one bent portion being present between the second tip portion and the second base portion, in a case where the projection system is used in a second posture in which the optical axis of the projection lens extends in a third axis direction, an area in which the first speaker overlaps with the first arm portion is smaller than an area in which the first speaker does not overlap with the first arm portion when the projection system is viewed from above in the second axis direction.

[0070] Thus, in a case where the projection system is used in a posture in which the optical axis of the projection lens of the projector is directed upward in the vertical direction, the arm portion does not interfere with the output sound of the speaker, and thus the sound output from the speaker can be improved.

[0071] (Auxiliary Note 2) The projection system according to the auxiliary note 1, wherein, when the projection system is viewed from above in the second axis direction, the first connection portion of the first arm portion is located in the third wall portion at a middle between the first wall portion and the second wall portion of the projector, and the first speaker is located between the middle and the second wall portion.

[0072] Thus, the center of gravity of the projector is located near the middle, so by providing the connection portion at the middle, the rotation of the projector due to its own weight can be suppressed. Therefore, in the first posture, changes in sound during use of the projection system due to accidental rotation of the projector can be prevented.

[0073] (Paragraph 3) The projection system according to any one of Paragraphs 1 to 2, wherein the projector has an exhaust portion, the exhaust portion is provided at a position closer to the fifth wall portion than to the middle of the fifth wall portion and the sixth wall portion when the projection system is viewed from above in the second axis direction, and the first speaker and the second speaker are provided at positions closer to the sixth wall portion than to the middle of the fifth wall portion and the sixth wall portion.

[0074] Thus, in order to cause the hot air generated inside the projector to rise upward in the first posture, it is preferable that the exhaust portion be provided at a position closer to the fifth wall portion than to the middle of the fifth wall portion and the sixth wall portion. At this time, by providing the first speaker closer to the sixth wall portion than to the middle of the fifth wall portion and the sixth wall portion, the exhaust portion can be provided without interfering with the speaker. That is, it is possible to reduce the case where the waste heat of the exhaust portion affects the performance of the speaker.

[0075] (Paragraph 4) The projection system according to any one of Paragraphs 1 to 3, wherein at least a part of the curved portion of the first arm portion is curved at an angle of 90 degrees or more and 160 degrees or less, and at least a part of the curved portion of the second arm portion is curved at an angle of 90 degrees or more and 160 degrees or less.

[0076] Thus, when the projection system is used in a posture in which the optical axis of the projection lens of the projector faces upward in the vertical direction, it is possible to reduce the case where the arm portion interferes with the sound output from the speaker.

[0077] (Paragraph 5) The projection system according to any one of Paragraphs 1 to 3, wherein the first tip portion and the first base portion are constituted separately and connected to each other in a rotatable manner, and the second tip portion and the second base portion are constituted separately and connected to each other in a rotatable manner.

[0078] Thus, when the projection system is used in a posture in which the optical axis of the projection lens of the projector faces upward in the vertical direction, it is possible to adjust the area of the arm portion that covers the first speaker of the projector. Thus, it is possible to reduce the case where the arm portion interferes with the sound output from the speaker.

[0079] (Paragraph 6) The projection system according to any one of Paragraphs 1 to 3, wherein the first arm portion is integrally constituted including the first tip portion and the first base portion, and the second arm portion is integrally constituted including the second tip portion and the second base portion.

[0080] Thus, in the use of the projection system, the posture of the projection system can be further stabilized. Thus, it is possible to prevent unexpected changes in the sound output from the speaker.

[0081] (Paragraph 7) The projection system according to any one of Paragraphs 1 to 3, wherein at least a part of the curved portion of the first arm portion is curved at an angle of 0 degrees or more and 90 degrees or less, and at least a part of the curved portion of the second arm portion is curved at an angle of 0 degrees or more and 90 degrees or less.

[0082] Thus, in the use of the projection system in the posture in which the optical axis of the projection lens of the projector is directed upward in the vertical direction, it is possible to reduce the quality of the sound output from the speaker of the projector that is obstructed by the arm portion.

[0083] (Paragraph 8) The projection system according to any one of Paragraphs 1 to 3, wherein the first arm portion is curved at a curved portion of the first arm portion, and the second arm portion is curved at a curved portion of the second arm portion.

[0084] Thus, in the use of the projection system in the posture in which the optical axis of the projection lens of the projector is directed upward in the vertical direction, it is possible to form the shape in which the arm portion passes around the first speaker, and thus it is possible to reduce the quality of the sound output from the speaker of the projector that is obstructed by the arm portion.

[0085] (Auxiliary Note 9) A projection system having: a projector; a stand base that supports the projection system in a set state of the projection system; and a first arm portion and a second arm portion that are linked with the projector and the stand base, connecting the projector and the stand base, the projector having a projection lens, an outer casing, and a speaker having a first speaker and a second speaker, the outer casing having, in a case where the projection system is used in a first posture in which an optical axis of the projection lens extends in a first axis direction, a first wall portion provided with the projection lens, a second wall portion on a side opposite to the first wall portion in a direction along the first axis, a third wall portion and a fourth wall portion facing each other on sides opposite to each other in a direction along a second axis perpendicular to the first axis, and a fifth wall portion and a sixth wall portion facing each other on sides opposite to each other in a direction along a third axis perpendicular to the first axis and the second axis, the sixth wall portion being lower than the fifth wall portion in a vertical direction, the first speaker being disposed in a first corner portion constituted by the second wall portion and the third wall portion inside the outer casing, and the second speaker being disposed in a second corner portion constituted by the second wall portion and the fourth wall portion inside the outer casing, the projector being relatively rotatable with respect to the first arm portion and the second arm portion about a rotation axis extending in the second axis direction, the first arm portion having a first tip portion connected to the third wall portion of the projector via a first connection portion, a first base portion linked with the stand base, and a first intermediate portion connecting the first tip portion and the first base portion, the first tip portion and the first base portion having at least one bent portion therebetween, the second arm portion having a second tip portion connected to the fourth wall portion of the projector via a second connection portion, a second base portion linked with the stand base, and a second intermediate portion connecting the second tip portion and the second base portion, the second tip portion and the second base portion having at least one bent portion therebetween, in a case where the projection system is used in a second posture in which the optical axis extends in a third axis direction, the area in which the first speaker overlaps with the first arm portion is smaller than the area in which the first speaker does not overlap with the first arm portion when the projection system is viewed in the second axis direction.

[0086] Thus, in a case where the projection system is used in a posture in which the optical axis of the projection lens of the projector faces upward in the vertical direction, the case in which the arm portion interferes with the sound output from the speaker can be reduced.

[0087] (Paragraph 10) The projection system according to Paragraph 9, wherein, when the projection system is viewed from above in the second axis direction, the first connection portion is located in the middle of the first wall portion and the second wall portion among the third wall portions, and the first speaker is located between the middle and the second wall portion, and when the projection system is viewed from above in the second axis direction, the second connection portion is located in the middle of the first wall portion and the second wall portion among the fourth wall portions, and the second speaker is located between the middle and the second wall portion.

[0088] Thus, the center of gravity of the projector is located near the middle, and therefore, by providing the connection portions at the middle, the rotation of the projector due to the weight of the projector can be suppressed. Thus, in the first posture, the position of the first speaker is changed according to the weight of the projector, and the variation in sound in use can be reduced.

[0089] (Paragraph 11) The projection system according to Paragraph 10, wherein the projector has an exhaust portion, and when the projection system is viewed from above in the second axis direction, the exhaust portion is provided at a position closer to the fifth wall portion than to the middle of the fifth wall portion and the sixth wall portion, and the speaker is provided at a position closer to the sixth wall portion than to the middle of the fifth wall portion and the sixth wall portion.

[0090] Thus, by providing the first speaker closer to the sixth wall portion than to the middle of the fifth wall portion and the sixth wall portion, the exhaust portion can be provided without interfering with the speaker. The influence of the waste heat of the exhaust portion on the performance of the speaker can be reduced.

[0091] (Paragraph 12) The projection system according to any one of Paragraphs 9 to 11, wherein, in the first arm portion, an angle formed by the first tip portion and the first base portion is in a range of 90 degrees or more and 180 degrees or less, an angle formed by the first tip portion and the first middle portion is in a range of 90 degrees or more and 180 degrees or less, and an angle formed by the first middle portion and the first base portion is in a range of 90 degrees or more and 180 degrees or less, and, in the second arm portion, an angle formed by the second tip portion and the second base portion is in a range of 90 degrees or more and 180 degrees or less, an angle formed by the second tip portion and the second middle portion is in a range of 90 degrees or more and 180 degrees or less, and an angle formed by the second middle portion and the second base portion is in a range of 90 degrees or more and 180 degrees or less.

[0092] Thus, when the projection system is used in a posture in which the optical axis of the projection lens of the projector faces upward in the vertical direction, the arm portions can be prevented from interfering with the sound output from the speakers.

[0093] (Paragraph 13) The projection system according to Paragraph 12, wherein the first tip portion, the first base portion, and the first intermediate portion are separately formed and connected so as to be rotatable relative to each other, and the second tip portion, the second base portion, and the second intermediate portion are separately formed and connected so as to be rotatable relative to each other.

[0094] Thus, when the projection system is used in a posture in which the optical axis of the projection lens of the projector is directed upward in the vertical direction, the area of the arm portion covering the first speaker of the projector can be adjusted. Thus, the case where the arm portion interferes with the sound output from the speaker can be reduced.

[0095] (Paragraph 14) The projection system according to Paragraph 12, wherein the first tip portion, the first base portion, and the first intermediate portion are integrally formed, and the second tip portion, the second base portion, and the second intermediate portion are integrally formed.

[0096] Thus, when the projection system is used, the first tip portion does not rotate relative to the second tip portion, and thus the posture of the projection system can be stabilized. Thus, the case where the quality of the sound output from the speaker changes can be reduced.

Claims

1. A projection system, characterized by Having: a projector; a stand base that supports the projection system in a set state of the projection system; and a first arm portion and a second arm portion that are connected to the projector and the stand base, connecting the projector and the stand base, the projector has a projection lens, an outer casing, and a speaker, the speaker has a first speaker and a second speaker, in a case where the projection system is used in a first posture in which an optical axis of the projection lens extends in a first axis direction, the outer casing has: a first wall portion that is provided with the projection lens; a second wall portion that faces a side opposite to the first wall portion in a direction along the first axis; a third wall portion and a fourth wall portion that face opposite sides to each other in a direction along a second axis that is perpendicular to the first axis; and a fifth wall portion and a sixth wall portion that face opposite sides to each other in a direction along a third axis that is perpendicular to the first axis and the second axis, the sixth wall portion being lower than the fifth wall portion in a vertical direction, the first speaker is disposed in a first corner portion constituted by the second wall portion and the third wall portion inside the outer casing, the second speaker is disposed in a second corner portion constituted by the second wall portion and the fourth wall portion inside the outer casing, the projector is relatively rotatable with respect to the first arm portion and the second arm portion about a rotation axis that extends 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, having 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, and a second base portion connected to the stand base, having at least one bent portion between the second tip portion and the second base portion, in a case where the projection system is used in a second posture in which the optical axis extends in a third axis direction, the area in which the first speaker overlaps with the first arm portion is smaller than the area in which the first speaker does not overlap with the first arm portion when the projection system is viewed from above in the second axis direction.

2. The projection system according to claim 1, wherein when the projection system is viewed from above in the second axis direction, the first connection portion of the projector and the first arm portion are located in the third wall portion, between the first wall portion and the second wall portion, the first speaker is located between the second wall portion and the intermediate portion.

3. The projection system according to claim 2, wherein the projector has an exhaust portion, when the projection system is viewed from above in the second axis direction, the exhaust portion is provided at a position on the fifth wall portion side from an intermediate portion of the fifth wall portion and the sixth wall portion, the first speaker and the second speaker are provided at positions on the sixth wall portion side from the intermediate portion of the fifth wall portion and the sixth wall portion.

4. The projection system according to any one of claims 1 to 3, wherein the first arm portion is bent at at least one bent portion thereof by an angle of 90 degrees or more and 160 degrees or less, and the second arm portion is bent at at least one bent portion thereof by an angle of 90 degrees or more and 160 degrees or less.

5. The projection system according to any one of claims 1 to 3, wherein the first tip portion and the first base portion are constituted separately and connected to each other in a rotatable manner, and the second tip portion and the second base portion are constituted separately and connected to each other in a rotatable manner.

6. The projection system according to any one of claims 1 to 3, wherein the first arm portion is constituted integrally including the first tip portion and the first base portion, and the second arm portion is constituted integrally including the second tip portion and the second base portion.

7. The projection system according to any one of claims 1 to 3, wherein the first arm portion is bent at at least one bent portion thereof by an angle of 0 degrees or more and 90 degrees or less, and the second arm portion is bent at at least one bent portion thereof by an angle of 0 degrees or more and 90 degrees or less.

8. The projection system according to any one of claims 1 to 3, wherein the first arm portion is in a shape bent at a bent portion thereof, and the second arm portion is in a shape bent at a bent portion thereof. having: a projector; a stand base which supports the projection system in a set state of the projection system; and a first arm portion and a second arm portion which are connected to the projector and the stand base, connecting the projector and the stand base, the projector has a projection lens, an outer casing, and a speaker, the speaker has a first speaker and a second speaker, in a case where the projection system is used in a first posture in which an optical axis of the projection lens extends in a first axis direction, the outer casing has: a first wall portion which is provided with the projection lens; a second wall portion which is directed toward a side opposite to the first wall portion in a direction along the first axis; 9. A projection system, characterized by a third wall portion and a fourth wall portion which are directed toward opposite sides to each other in a direction along a second axis perpendicular to the first axis; and a fifth wall portion and a sixth wall portion which are directed toward opposite sides to each other in a direction along a third axis perpendicular to the first axis and the second axis, the sixth wall portion being lower than the fifth wall portion in a vertical direction, the first speaker is disposed in a first corner portion constituted by the second wall portion and the third wall portion inside the outer casing, the second speaker is disposed in a second corner portion constituted by the second wall portion and the fourth wall portion inside the outer casing, the projector is relatively rotatable with respect to the first arm portion and the second arm portion about a rotation axis extending in the second axis direction, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The first arm portion has a first end portion connected to the third wall portion of the projector via a first connecting portion, a first base portion connected to the support base, and a first intermediate portion connecting the first end portion and the first base portion, the first end portion and the first base portion having at least one bent portion therebetween. The second arm portion has a second end portion connected to the fourth wall portion of the projector via a second connecting portion, a second base portion connected to the support base, and a second intermediate portion connecting the second end portion and the second base portion, the second end portion and the second base portion having at least one bent portion therebetween. In a case where the projection system is used in a second posture in which the optical axis extends in a third axial direction, an area in which the first speaker overlaps with the first arm portion is smaller than an area in which the first speaker does not overlap with the first arm portion when the projection system is viewed from above in the second axial direction.

10. The projection system according to claim 9, wherein the first connecting portion is located in the third wall portion between the first wall portion and the second wall portion when the projection system is viewed from above in the second axial direction, and the first speaker is located between the first wall portion and the second wall portion. the second connecting portion is located in the fourth wall portion between the first wall portion and the second wall portion when the projection system is viewed from above in the second axial direction, and the second speaker is located between the first wall portion and the second wall portion.

11. The projection system according to claim 10, wherein the projector has an exhaust portion, the exhaust portion is disposed on the fifth wall portion side from a middle of the fifth wall portion and the sixth wall portion when the projection system is viewed from above in the second axial direction, and the speaker is disposed on the sixth wall portion side from the middle of the fifth wall portion and the sixth wall portion.

12. The projection system according to any one of claims 9 to 11, wherein in the first arm portion, an angle formed by the first end portion and the first base portion is in a range of 90 degrees or more and 180 degrees or less, an angle formed by the first end portion and the first intermediate portion is in a range of 90 degrees or more and 180 degrees or less, an angle formed by the first intermediate portion and the first base portion is in a range of 90 degrees or more and 180 degrees or less, in the second arm portion, an angle formed by the second end portion and the second base portion is in a range of 90 degrees or more and 180 degrees or less, an angle formed by the second end portion and the second intermediate portion is in a range of 90 degrees or more and 180 degrees or less, an angle formed by the second intermediate portion and the second base portion is in a range of 90 degrees or more and 180 degrees or less.

13. The projection system according to claim 12, wherein the first end portion, the first base portion, and the first intermediate portion are respectively formed as separate bodies and are connected to each other in a rotatable manner. ​ ​ The second end portion, the second base portion, and the second intermediate portion are respectively formed separately and connected to each other in a rotatable manner.

14. The projection system of claim 12, wherein, The first end portion, the first base portion, and the first intermediate portion are integrally formed, The second end portion, the second base portion, and the second intermediate portion are integrally formed.

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