Audio playback device and speaker device

Abstract

To provide a speaker device that can provide a wide sound field while reducing cost, facilitating miniaturization, and providing a large degree of freedom in terms of exterior design.SOLUTION: A speaker device (92) includes a speaker unit (3B), an enclosure (1B), in which the speaker unit (3B) is mounted, and an audio reflection member (7B), which is disposed inside the enclosure (1B), facing the speaker unit (3B) and has a plane (7Ba), whose vertical line (CL7B) is non-parallel to an axis line (CL3B) of the speaker unit (3B).SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to an audio reproduction device and a speaker device. [Background technology]

[0002] It is desirable for the reproduced sound from an audio reproduction device and a speaker device to enable a listener to perceive a wider sound field. Patent Document 1 describes a speaker device equipped with a rotation means for changing the orientation of a speaker unit by rotation. The speaker device described in Patent Document 1 is said to be capable of widening the sound field by rotating the speaker unit outward using the rotation means. Patent Document 2 describes a speaker device that includes a speaker array facing forward and speakers facing outward on each of the left and right sides of the speaker array. The speaker device described in Patent Document 2 is said to be able to obtain a wide sound field on both sides by using the speakers facing outward. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 2738401 [Patent Document 2] Patent No. 5565044 Summary of the Invention [Problem to be solved by the invention]

[0004] The speaker device described in Patent Document 1 is expensive because it is equipped with a rotating means. The speaker device described in Patent Document 2 needs to be equipped with a speaker unit facing outward in addition to a speaker unit facing forward. This makes it difficult to reduce the size of the speaker device, and limits the freedom of the exterior design.

[0005] Therefore, an object of the present invention is to provide an audio reproduction device and a speaker device which can produce a wide sound field while keeping costs down, easily making the device compact, and allowing a high degree of freedom in terms of exterior design. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention has the following configurations 1) and 2). 1) A speaker unit; On the front an attached enclosure; The perpendicular line is not parallel to the axis of the speaker unit. a sound reflecting member disposed inside the enclosure and having a flat surface facing the speaker unit, the sound reflecting member being oriented in a first direction; of a pair of speaker units spaced apart from each other in a second direction perpendicular to the first direction so as to face the A main body portion disposed between the pair of speaker portions, A part of the sound emitted from the speaker unit into the space within the enclosure is reflected by the plane and vibrates the sub-vibration part including the front surface of the enclosure as a reflected sound, and the sound generated by the vibration of the sub-vibration part due to the reflected sound and emitted into the external space and the sound directly emitted from the speaker unit into the external space are synthesized and heard. The sound reflection member of each of the pair of speaker units is The above These are audio reproduction devices arranged so that as the perpendicular lines extend in the one direction, they are spaced apart from each other in the second direction. 2) A speaker unit; The speaker unit On the front an attached enclosure; Located within the enclosure a sound reflecting member having a plane facing the speaker unit, the plane being not parallel to the axis of the speaker unit and perpendicular to the placement member; Equipped with The flat surface of the sound reflecting member is located closer to the speaker unit than the placement member in the axial direction of the speaker unit, and a part of the sound emitted from the speaker unit into the space within the enclosure is reflected by the flat surface and vibrates the auxiliary vibration part including the front surface of the enclosure as reflected sound, and the sound generated by the vibration of the auxiliary vibration part due to the reflected sound and emitted into the external space and the sound directly emitted from the speaker unit into the external space are synthesized and heard. It is a speaker device. Effect of the Invention

[0007] According to the present invention, it is possible to suppress costs, easily reduce size, and provide a wide sound field while allowing a large degree of freedom in exterior design. [Brief description of the drawings]

[0008] [Figure 1]FIG. 1 is a perspective view showing the appearance of an audio device 91 which is an example of an audio reproducing device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along the line S2-S2 in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along the line S3-S3 in FIG. [Figure 4] FIG. 4 shows a sound reflecting member 7 provided in an audio device 91, where (a) is a front view, (b) is a top view, and (c) is a side view. [Diagram 5] FIG. 5 is a vertical cross-sectional view of a conventional speaker device 192 taken along a horizontal plane. [Figure 6] FIG. 6 is a vertical cross-sectional view of the speaker device 192. As shown in FIG. [Figure 7] FIG. 7 is a vertical cross-sectional view taken along a horizontal plane of a speaker device 92 which is an example of a speaker device according to an embodiment of the present invention. [Figure 8] FIG. 8 is a vertical cross-sectional view of the speaker device 92. As shown in FIG. [Figure 9] FIG. 9 is a top view for explaining the sound field that the listener H perceives from the sound reproduced by the audio device 91. As shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The audio reproduction device and the speaker device according to the embodiment of the present invention will be described with reference to an audio device 91 and a speaker device 92, which are respective examples.

[0010] First, the configuration of audio device 91 will be described with reference to FIGS. Fig. 1 is an external perspective view of audio device 91. Fig. 2 is a cross-sectional view taken at the S2-S2 position in Fig. 1, and Fig. 3 is a cross-sectional view taken at the S3-S3 position in Fig. 2. For ease of explanation, the up / down, left / right, front / rear directions are defined as directions indicated by arrows in Fig. 1. In this example, the front / rear direction is defined as the first direction, the left / right direction as the second direction and the X-axis direction, and the up / down direction as the third direction.

[0011] The audio device 91 is a so-called speaker-integrated stereo sound reproducing device. 1 and 2, an audio device 91 has a cabinet 1, a main body 2, and a pair of left and right speaker units 3L, 3R. Speaker nets 4 are removably attached to the speaker units 3L, 3R, respectively. The cabinet 1 is made of wood, for example, and has a rectangular box shape. In detail, the cabinet 1 has a front panel 11, a top panel 12, a left panel 13, a right panel 14, a rear panel 15, and a bottom panel 16.

[0012] The main body 2 is housed inside the central part of the cabinet 1, and the front panel 2a is exposed to the outside through an opening 11a formed in the front plate 11. The main body 2 is configured to include a CD player section, a tuner section, an amplifier section, and the like.

[0013] In FIG. 2, a pair of left and right speaker mounting holes 11b, 11b are formed on the left and right sides of an opening 11a in a front plate 11 of the cabinet 1. The speaker units 3L and 3R are attached to the pair of speaker mounting holes 11b, 11b with their output surfaces, on which the diaphragms 3La and 3Ra are widely exposed, facing forward (first direction). The axes CL3L and CL3R of the pair of speaker units 3L and 3R are parallel and extend in the front-rear direction. The pair of speaker units 3L and 3R are each electrically connected to the main body 2. The audio device 91 outputs stereo audio signals generated by a CD player or the like in the main body 2 and amplified by an amplifier to the front as stereo audio from a pair of left and right speaker units 3L, 3R.

[0014] As shown in FIG. 2, inside the cabinet 1, on both the left and right sides of the main body 2 disposed in the center in the left-right direction, partition walls 51, 52 are provided which divide the internal space of the cabinet 1 into left and right spaces. That is, audio device 91 has, on the left side of main body 2, a speaker section 8L including an enclosure 1L consisting of a front panel 11, a top panel 12, a left side panel 13, a rear panel 15, a bottom panel 16, and a partition wall 51, and a speaker unit 3L. The audio device 91 also has, on the right side of the main body 2, a speaker section 8R including an enclosure 1R consisting of a front panel 11, a top panel 12, a right side panel 14, a rear panel 15, a bottom panel 16, and a partition wall 52, and a speaker unit 3R.

[0015] The audio device 91 includes a pair of speaker sections 8L, 8R spaced apart in the left-right direction, and a main body section 2 disposed between the pair of speaker sections 8L, 8R. In the audio device 91, the speaker units 3L, 3R of the pair of speaker sections 8L, 8R are disposed so as to face the same forward direction in the front-rear direction.

[0016] Inside the speaker section 8L, an almost sealed space VL is formed by the enclosure 1L as a back cavity of the speaker unit 3L. Similarly, inside the speaker section 8R, an almost sealed space VR is formed by the enclosure 1R as a back cavity of the speaker unit 3R.

[0017] Next, the internal structure of the speaker units 8L, 8R will be described. The speaker unit 8R is configured symmetrically with respect to the speaker unit 8L. Therefore, the speaker unit 8L will be described as a representative with reference to Figs. 3 and 4. Fig. 3 is a cross-sectional view taken along the line S3-S3 in Fig. 2. Fig. 4 is a three-sided view of the sound reflecting member 7 provided in the speaker units 8L, 8R, where (a) is a front view, (b) is a top view, and (c) is a right side view. Hereinafter, when the sound reflecting members 7 of the speaker units 8L, 8R are to be distinguished from each other, they will be referred to as sound reflecting members 7L, 7R.

[0018] As shown in FIGS. 2 to 4, the speaker section 8L has an enclosure 1L, a speaker unit 3L, a duct 17, a bottom reinforcing plate 18, and a sound reflecting member 7L. The duct 17 is a resonance tube that makes the speaker unit 8L a so-called rear bass reflex type. As shown in Fig. 3, the rear end of the duct 17 is fixed to the rear panel 15 as an opening 15a, and the internal space Vd of the duct 17 communicates with the external space Vgb behind the speaker unit 8L through the opening 15a.

[0019] The bottom reinforcing plate 18 is a rectangular thin plate member that is long in the front-rear direction when viewed from above, and is attached to the upper surface of the bottom plate 16 by adhesive or the like. The bottom reinforcing plate 18 is made of wood, for example, and is attached so that the orientation of the wood fibers is in the front-to-rear direction. The bottom reinforcing plate 18 may be made of laminated wood that does not have a fiber orientation direction. The duct 17 has the function of conditioning the sound reproduced by the speaker unit 8L, and the bottom reinforcement plate 18 directly increases the rigidity of the enclosure 1L and indirectly has the function of conditioning the sound reproduced by the speaker unit 8L by increasing the rigidity of the enclosure 1L. The components arranged to protrude into the enclosure 1L, including the duct 17 and the bottom reinforcing plate 18, excluding the speaker unit 3L, are referred to as arranged components K. In addition, the arranged components K also include components (such as sound absorbing materials) housed in the enclosure 1L.

[0020] The sound reflecting member 7L is a member that reflects sound and is disposed inside the enclosure 1L. As shown in Fig. 4, the sound reflecting member 7L has a triangular prism shape whose cross section is, for example, a right-angled triangle. The sound reflecting member 7L is made of, for example, wood. The mounting surface 7Lb of the sound reflecting member 7L, which is one hypotenuse of a right triangle in the cross-sectional shape, is a flat surface, and is a surface that is attached in close contact with the upper surface of the bottom plate 16, for example. The sound reflecting member 7 is attached so that the reflecting surface 7La, which is a flat surface that forms the hypotenuse of a right-angled triangle in the cross-sectional shape, faces forward in the speaker section 8L and faces the speaker unit 3L. The reflecting surface 7La reflects and refracts a portion of the sound emitted backward from the speaker unit 3L. The reflecting surface 7La is inclined at an angle θa with respect to the mounting surface 7Lb. The cross-sectional shape of the sound reflecting member 7L may be a triangle other than a right-angled triangle, a rectangle, or the like. The angle θa is, for example, greater than or equal to 35° and less than 90°.

[0021] As shown in FIG. 2, the sound reflecting member 7L is attached to the bottom plate 16 in such a position that the right side of the speaker unit 8L is inclined forward at an angle θbL with respect to the X-axis direction which is the left-right direction. As a result, the perpendicular line CL7L of the reflecting surface 7La is not parallel to the axis CL3L of the speaker unit 3L, and is inclined leftward and upward as it moves forward. The position of the sound reflecting member 7L in the enclosure 1L is forward of the front end position P1 of the duct 17 and the bottom reinforcing plate 18, which are the arranged members K, in the front-rear direction.

[0022] In the right speaker unit 8R, the duct 17 and the bottom reinforcing plate 18 are attached in the same position and with the same shape as in the speaker unit 8L. However, the mounting posture of the sound reflecting member 7R is different, and in the speaker unit 8R, the sound reflecting member 7R is mounted on the bottom plate 16 in a posture in which the left side is tilted forward at an angle θbR with respect to the X-axis direction which is the left-right direction. As a result, the perpendicular line CL7R of the reflecting surface 7Ra is not parallel to the axis CL3R of the speaker unit 3R, and is inclined to the right and upward as it moves forward.

[0023] The angles θbL and θbR are each set in the range of more than 0° to 45° or less. Moreover, the angle θbR is set to be the same as the angle θbL. As a result, in the sound reflecting members 7L, 7R of each of the pair of speaker units 3L, 3R, the reflecting surfaces 7La, 7Ra become surfaces that become spaced apart from each other in the left-right direction as the respective perpendicular lines CL7L, CL7R extend forward. The sound reflecting member 7, when attached to the bottom plate 16, increases the rigidity of the enclosure 1L to condition the sound reproduced by the speaker units 8L, 8R, and has the function of expanding the sound field of the reproduced sound from the audio device 91 as perceived by a listener.

[0024] The speaker unit 8L can be separated from the cabinet 1 and made into a speaker device 92 having a sound reflecting member 7B as the sound reflecting member 7. The sound reproduced by the speaker unit 8L using this speaker device 92 will be described with reference to Figs. 7 and 8. For comparison, the sound reproduced by a conventional speaker device 192 in which the sound reflecting member 7B is removed from the speaker device 92 will also be described with reference to Figs. 5 and 6.

[0025] Fig. 5 is a horizontal cross-sectional view of a speaker device 192 that does not have a sound reflecting member 7B, and Fig. 6 is a vertical cross-sectional view of the speaker device 192. Fig. 7 is a horizontal cross-sectional view of a speaker device 92 that has a sound reflecting member 7B in comparison with the speaker device 192, and Fig. 8 is a vertical cross-sectional view of the speaker device 92.

[0026] 5 and 6, the speaker device 192 includes an enclosure 1A and a speaker unit 3A. The enclosure 1A is made of wood, for example, and is formed in the shape of a rectangular parallelepiped box. In more detail, the enclosure 1A includes a front plate 11A, a top plate 12A, a left plate 13A, a right plate 14A, a rear plate 15A, and a bottom plate 16A. The speaker unit 3A is attached to a front plate 11A, and a duct 17A and a bottom reinforcing plate 18A are attached inside the enclosure 1A, similar to the speaker section 8L of the audio device 91. Inside the speaker device 192, the enclosure 1A forms a space VLA that is substantially sealed except for the duct 17A, as a back cavity of the speaker unit 3A.

[0027] The speaker unit 3A is connected to an external audio output device corresponding to the main body 2, and converts an audio signal received from the audio output device into sound by vibration of the diaphragm 3Aa, and outputs the sound. From the speaker unit 3A, sound F1 is output forward, and sound F1B is output into a space VLA, which is a back cavity at the rear.

[0028] The sound F1B travels rearward generally along the axis CL3A of the speaker unit 3A and is reflected by the inner surface of the enclosure 1A, forming a sound field in the space VLA that is not biased in the left-right and up-down directions. Therefore, the enclosure 1A minutely vibrates with vibration VR1 in a direction that increases or decreases the volume of the space VLA without any bias in the left-right and up-down directions. As a result, the listener H positioned in front of the speaker device 192 hears a composite sound of the sound F1 emitted directly from the speaker unit 3A into the external space Vg and the sound emitted into the external space Vg by the vibration VR1 of the enclosure 1A, and an auditory sound field AR1 is formed.

[0029] Since the speaker device 192 is configured symmetrically, the sound field AR1 is symmetrical about the axis CL3A of the speaker unit 3A.

[0030] 7 and 8, the speaker device 92 has an enclosure 1B and a speaker unit 3B similar to those of the speaker device 192. The enclosure 1B is made of wood, for example, and is formed in a rectangular box shape. In detail, the enclosure 1B has a front plate 11B, a top plate 12B, a left plate 13B, a right plate 14B, a rear plate 15B, and a bottom plate 16B. The speaker unit 3B is attached to a front plate 11B, and inside the enclosure 1B, a duct 17B and a bottom reinforcing plate 18B are attached as a mounting member K, similar to the speaker section 8L of the audio device 91. Inside the speaker device 92, the enclosure 1B forms a substantially sealed space VLB as a back cavity of the speaker unit 3B, except for an opening 15Ba at the rear end that communicates with the external space of the duct 17B.

[0031] The speaker unit 3B is connected to an audio output device corresponding to the main body 2, and converts an audio signal received from the audio output device into sound by vibration of the diaphragm 3Ba and outputs the sound. From the speaker unit 3B, sound F1 is outputted into the space in front, and sound F1B is outputted into the space VLB in the rear.

[0032] The sound F1B travels rearward generally along the axis CL3B of the speaker unit 3B and is reflected by the inner surface of the enclosure 1B to form a sound field in the space VLB that is not biased in the left-right and up-down directions. Therefore, the enclosure 1B minutely vibrates with vibration VR1 in a direction that increases or decreases the volume of the space VLB without bias in the left-right and up-down directions. This vibration VR1 generates sound F3.

[0033] Furthermore, the speaker device 92, unlike the speaker device 192, has a sound reflecting member 7B. As shown in Fig. 4, the sound reflecting member 7B is formed in the same shape as the sound reflecting member 7L. That is, the sound reflecting member 7B has a reflecting surface 7Ba as a flat surface corresponding to the reflecting surface 7La of the sound reflecting member 7L.

[0034] As shown in FIGS. 7 and 8, a part of the sound F1B emitted from the speaker unit 3B into the space VLB within the enclosure 1B is reflected by the reflecting surface 7Ba of the sound reflecting member 7B to become a reflected sound F2. 7, the sound reflecting member 7B is attached at an angle θb with respect to the X-axis direction so that the right side is the front side. Also, the sound reflecting surface 7Ba of the sound reflecting member 7B is an inclined plane that inclines backward as it goes upward. That is, the perpendicular line CL7B of the reflective surface 7Ba is not parallel to the axis CL3B of the speaker unit 3B, and tilts leftward and upward as it moves forward. In other words, the use posture of the speaker device 92 is defined as a posture in which the perpendicular line CL7B of the reflective surface 7Ba is not parallel to the axis CL3B of the speaker unit 3B, and tilts leftward and upward as it moves forward when viewed from in front of the axis CL3B. Therefore, the sound F2 reflected by the reflecting surface 7Ba changes its traveling direction, is refracted to the left and upward, and travels mainly diagonally upward and forward to the left.

[0035] The reflected sound F2 reaches the sub-vibration section 1BH, which is a portion of the enclosure 1B in front of the sound reflecting member 7B. The sub-vibration section 1BH is indicated by a dashed line in Fig. 7 and Fig. 8, and mainly includes the front panel 11B, the front part of the left side panel 13B, and the front part of the top panel 12B. The sub-vibration unit 1BH vibrates with vibration VR2 in the direction facing the upper left front and the lower right rear, which increases or decreases the volume of the space VLB depending on the traveling direction of the reflected sound F2, and generates sound F4. That is, the sub-vibration portion 1BH of the enclosure 1B emits the sound F3 generated by the vibration VR1 and the sound F4 generated by the vibration VR2 into the external space Vg.

[0036] As a result, the listener H of the reproduced sound, who is located in front of the speaker device 92, hears the following sounds: a synthesized sound of sound F1 emitted directly from the speaker unit 3B into the external space Vg, sound F3 emitted into the external space Vg by vibration VR1 of the entire enclosure 1B, and sound F4 emitted into the external space Vg mainly by vibration VR2 of the auxiliary vibration part 1BH of the enclosure 1B. The listener H recognizes an auditory sound field AR2 by the synthesized sound of sound F1, sound F3, and sound F.

[0037] The sound field AR2 is synthesized with the sound F4 emitted toward the upper left front, which is generated by the vibration VR2 of the sub vibration part 1BH, in the sound field AR1 (shown by the dashed line in Figs. 7 and 8). This allows the listener H to recognize the sound field AR2 as a sound field that is expanded toward the upper left more than the sound field AR1.

[0038] In general, it is better for the sound field recognized by the listener H from the sound reproduced by the stereo sound reproduction device to be wider in the left-right and up-down directions. Therefore, the speaker device 92, which recognizes a sound field that is expanded diagonally upward and forward to the left, is suitable as a left channel speaker. The speaker device 92 can be made to have a sound field that expands to the right and upward by reversing the installation angle of the sound reflecting member 7B from left to right and installing it in an inclined position with the left end facing forward, as in the sound reflecting member 7R shown in Figure 2. That is, the speaker device 92 allows the listener H to auditorily recognize the sound field AR2 expanded in accordance with the orientation of the reflecting surface 7Ba of the sound reflecting member 7B.

[0039] The speaker unit 8L of the audio device 91 has the same structure as the speaker device 92. That is, as shown in Fig. 2, the sound reflecting member 7L is attached to the bottom plate 16 at an angle θbL with respect to the X-axis direction so that the right end side faces forward, similar to the sound reflecting member 7B. Further, the speaker unit 8R is attached to the bottom plate 16 with the sound reflecting member 7R inclined at an angle θbR with respect to the X-axis direction so that the left end side faces forward.

[0040] As a result, as shown in Figure 9, an audio device 91 equipped with sound reflecting members 7L, 7R produces a sound field AR2 that is recognized by a listener H located in front, which is expanded to the left and right, respectively, compared to the sound field AR1 in the case where the audio device 91 does not have the sound reflecting members 7L, 7R. In addition, since the sound reflecting members 7L, 7R have reflecting surfaces 7La, 7Ra that are inclined rearward as they approach the upper side, the sound field AR2 recognized by the listener H is expanded upward as compared to the sound field AR1.

[0041] In the speaker device 92, in the usage posture, the perpendicular line of the reflecting surface 7Ba is inclined at least in the left-right direction when viewed from the position of the listener H, i.e., when viewed from the front side of the axis CL3B of the speaker unit 3B. This allows the listener H to recognize a sound field AR2 that is wide in at least either the left or right direction.

[0042] The speaker sections 8L, 8R of the audio device 91 and the speaker device 92 have sound reflecting members 7L, 7R and sound reflecting members 7B mounted at positions closer to the front end position P1 of the positioning member K in the directions of the axes CL3L, CL3R, and CL3B of the speaker units 3L, 3R, and speaker unit 3B. In other words, at least a part of the reflecting surfaces 7La, 7Ra, 7Ba is located closer to the front end position P1 of the arrangement member K attached inside the enclosures 1L, 1R, and 1B in the direction of the axes CL3L, CL3R, and CL3B. In this case, the arrangement members K are the ducts 17, 17B and the bottom reinforcing plates 18, 18B. For this reason, in the case of the speaker device 92, the reflected sound F2 reflected by the reflecting surface 7Ba of the sound reflecting member 7B directly vibrates the sub-vibration unit 1BH of the enclosure 1B with the vibration VR2 to generate sound F4 without being reflected again by the arrangement member K. This is the same for the speaker units 8L and 8R. This allows the listener H to more clearly recognize the expansion effect of the expanded sound field AR2.

[0043] As described above, the audio device 91 and the speaker device 92, which are sound reproduction devices, can obtain a wide sound field without rotating the speaker units 3L, 3R and the speaker unit 3B. Therefore, the audio device 91 and the speaker device 92 can be reduced in cost and easily miniaturized. Furthermore, the audio device 91 and the speaker device 92 can obtain a wide sound field even if the speaker units 3L, 3R and 3B are attached in a posture facing forward without being inclined relative to the enclosures 1L, 1R and 1B. Therefore, the audio device 91 and the speaker device 92 can be made compact and have a large degree of freedom in terms of their external design.

[0044] The embodiment described above in detail is not limited to the above-mentioned configuration, and may be modified without departing from the spirit and scope of the present invention.

[0045] In the audio device 91, which is an audio reproduction device, the speaker units 8L, 8R and the main body 2 do not need to be integrated by the cabinet 1. The audio device 91 may be configured as a set of the main body 2 and a pair of speaker devices 92 in which the angle θb of the sound reflecting member 7B is symmetrical on the left and right.

[0046] The reflection surface 7Ba of the sound reflection member 7B has only to have a plane that is not perpendicular to the axis CL3B of the speaker unit 3B. Therefore, the reflection surface 7Ba has only to have a perpendicular line CL7 that is not parallel to the axis CL3B and is inclined at least in the left-right direction. In the speaker device 92, the placement member K is not limited to the duct 17B and the bottom reinforcing plate 18B. In the space VLB, a part or member that is located rearward of the speaker unit 3B and protrudes from the inner surface of the enclosure 1B into the space VLB, and a member contained in the space VLB become the placement member K. [Explanation of symbols]

[0047] 1 Cabinet 1L, 1R, 1A, 1B Enclosure 1BH Sub-vibration section 11, 11A, 11B Front panel 11a opening 11b Speaker mounting hole 12, 12A, 12B Top plate 13,13A,13B Left side plate 14,14A,14B Right side plate 15,15A,15B Rear plate 15a,15Ba opening 16,16A,16B Bottom plate 17, 17A, 17B Duct 17a Front end surface 18,18A,18B Bottom reinforcement plate 2 Main unit 2a Front Panel 3L, 3R, 3A, 3B Speaker units 3Aa,3Ba diaphragm 4 Speaker Net 51,52 Partition wall 7,7B Sound reflecting material 7La,7Ra,7Ba reflective surface 7b Mounting surface 8L, 8R Speaker section 91 Audio equipment (audio playback equipment) 92,192 Speaker equipment AR1,AR2 sound field CL3L, CL3R, CL3A, CL3B Axis CL7L, CL7R, CL7B Perpendicular F1, F1B, F3, F4 audio F2 Reflected voice H Listener K placement material P1 Frontmost position Vgb,Vg External space VL,VR,Vd,VLA,VLB space Vgb external space VR1, VR2 vibration θa, θbL, θbR, θb angle

Claims

1. a pair of speaker sections including a speaker unit, an enclosure to which the speaker unit is attached on the front side, and a sound reflecting member disposed inside the enclosure, the sound reflecting member having a plane facing the speaker unit and a perpendicular line of which is not parallel to an axis of the speaker unit, the pair of speaker sections being spaced apart in a second direction perpendicular to the first direction so that the speaker unit faces one direction in the first direction; A main body portion disposed between the pair of speaker portions, A part of the sound emitted from the speaker unit into the space within the enclosure is reflected by the plane and vibrates the sub-vibration part including the front surface of the enclosure as a reflected sound, and the sound generated by the vibration of the sub-vibration part due to the reflected sound and emitted into the external space and the sound directly emitted from the speaker unit into the external space are synthesized and heard. An audio reproduction device in which the audio reflecting members of each of the pair of speaker units are arranged to be spaced apart from each other in the second direction as the perpendicular to the plane faces the one direction.

2. The audio reproduction device according to claim 1, characterized in that the normal to the plane of each of the sound reflecting members of the pair of speaker sections is inclined in the same direction relative to the first direction, that is, in a third direction perpendicular to the first direction and the second direction.

3. The pair of speaker units have a placement member inside the enclosure, 3. The sound reproducing device according to claim 1, wherein the plane is located closer to the speaker unit than the arrangement member is to the speaker unit in the axial direction of the speaker unit.

4. the sound reflection member has a triangular prism shape with a triangular cross section, one hypotenuse of the triangle being the flat surface facing the speaker unit, The plane is a surface that becomes the other hypotenuse of the triangle and is inclined with respect to a mounting surface that is attached in close contact with an upper surface of the bottom plate of the enclosure.

4. The audio reproducing device according to claim 1.

5. A speaker unit; an enclosure having the speaker unit attached to a front surface thereof; A placement member disposed within the enclosure; a sound reflection member disposed inside the enclosure and having a plane facing the speaker unit and whose perpendicular line is not parallel to an axis of the speaker unit; Equipped with The flat surface of the sound reflecting member is located closer to the speaker unit in the direction of the axis of the speaker unit than the positioning member, and a portion of the sound emitted from the speaker unit into the space within the enclosure is reflected by the flat surface and vibrates a sub-vibration part including the front surface of the enclosure as reflected sound, and the sound generated by the vibration of the sub-vibration part due to the reflected sound and emitted into the external space and the sound emitted directly from the speaker unit into the external space are combined and heard in this speaker device.

6. 6. The speaker device according to claim 5, wherein, in a usage position, the perpendicular line is inclined at least in the left-right direction when viewed from the direction of the axis of the speaker unit.

Images