WO2014175183A1

WO2014175183A1 - Speaker device, and head piece

Info

Publication number: WO2014175183A1
Application number: PCT/JP2014/061059
Authority: WO
Inventors: 和明平川
Original assignee: ヤマハ株式会社
Priority date: 2013-04-24
Filing date: 2014-04-18
Publication date: 2014-10-30
Also published as: CN105144744A; EP2991367B1; EP2991367A4; EP2991367A1; CN105144744B

Abstract

Provided is a speaker device capable of transmitting high-quality sound to a user located in front, and providing an increased degree of design freedom. The speaker device is provided with: a speaker unit installed facing upward; a head piece disposed over the speaker unit; and a light-emitting element disposed between the speaker unit and the head piece at a position such that the transmission of sound is not interrupted. The head piece includes a reflector reflecting the sound emitted by the speaker unit in a lateral direction, and the light-emitting element is disposed facing the reflector. The reflector may comprise a plane with the shape of two triangles extending from a lower edge corner of a back plate toward upper sides of a sound emitting opening joined together.

Description

Speaker device and headpiece

The present invention relates to a speaker device and a head piece provided with a speaker unit facing upward.

Generally speaking, many speaker devices have a box shape in which a speaker unit is attached to the front, which is the front direction to the user. Therefore, the front surface touching the user's eyes is whether the speaker unit is exposed or covered with a net-like front grille. Many decorations could not be applied because the propagation of the sound emitted by the speaker unit should not be hindered. For this reason, the conventional speaker device lacked decorativeness. The following speaker devices are known as conventional speaker devices.

JP 2007-274313 A

JP 09-098495 A

JP 2007-037058 A

Japanese Patent Laid-Open No. 11-075277

Therefore, if the speaker unit is provided on the top surface or the side surface, the front surface touching the user's eyes can be freely decorated, but if the speaker unit is provided in such a direction, the sound emitted is of good sound quality. It did not propagate to the user. Further, although it is conceivable to provide a member that reflects the sound emitted upward or sideward in the front direction, there is a concern that the speaker device may be made undecorative by the member. In other words, there is room for improvement with respect to decorating the speaker device while ensuring the acoustic performance of the speaker device.

Therefore, the present invention is intended to decorate the speaker device while ensuring the acoustic performance of the speaker device, and in particular, can transmit sound with good sound quality to the user in the front, and the design It is an object of the present invention to provide a speaker device with an increased degree of freedom and a headpiece used in the speaker device.

The speaker device of the present invention includes a first speaker unit that is installed upward, and a reflector that is provided on the first speaker unit and reflects the sound emitted by the first speaker unit in a direction including a horizontal component. And a light emitting element disposed between the first speaker unit and the head piece and facing the reflector.

In another aspect of the present invention, the head piece has a substantially cubic body portion and a skirt formed around the lower portion of the body portion, and the bottom plate of the body portion includes the first speaker unit. An opening having a diameter substantially the same as the aperture of the main body is formed, a sound emission port is formed on two adjacent side surfaces of the four side surfaces of the main body portion, and the other than the two adjacent side surfaces of the four side surfaces. A back plate for restricting the propagation direction of the sound is formed on the other two side surfaces, and the light emitting element is on the inner side of the skirt and between the bottom plate and the first speaker unit. It may be installed at the corner on the side.
Further, the reflector may have a surface having a shape obtained by joining two triangles respectively connecting a lower end angle of the back plate and an upper edge of the sound emission opening.
In addition, the light emitting element may be installed at a position closer to a corner on the sound emitting side than the opening formed in the bottom plate in a plan view.

The speaker device of the present invention further includes second and third speaker units arranged in a vertical direction below the first speaker unit, each in a different direction. Each of the third speaker units may be input with signals of different channels.
The second and third speaker units are housed in one speaker box, and the one speaker box is arranged in the vertical direction with respect to the second and third speaker units, and the second And you may have a bass-reflex port opened in the middle direction of the direction of the 3rd speaker unit.
Moreover, even if it installs so that the said 2nd and 3rd speaker unit may be located between a listener and the wall surface which reflects the sound emitted from the said 2nd and 3rd speaker unit, the wall surface side. good.

In addition, the speaker device of the present invention further includes a second speaker unit installed on the back side of the housing and provided toward the back direction, and the back side receives sound emitted from the second speaker unit. It may be arranged to face at least one reflecting wall.
In addition, the speaker device of the present invention may be installed at a corner of a room so that the sound emitted from the second speaker unit is reflected by two adjacent walls as the at least one wall. .
The speaker device of the present invention may be installed such that the sound emitted from the second speaker unit is reflected on one wall as the at least one wall.
The reflector may be configured to reflect and propagate the sound emitted by the first speaker unit in a wider angle range than when the straight sound travels straight from the first speaker unit.

Further, the speaker device of the present invention is disposed at a distance from the wall surface, the speaker device is provided on the surface of the housing facing the wall surface, and a speaker grille having a plurality of holes formed therein, A speaker unit that is disposed inside the speaker grill and emits sound toward the wall surface; and a light emitting unit that is disposed inside the speaker grill and emits light toward the wall surface through the speaker grill. It may be a thing.
The speaker grill may be formed of expanded metal or hunting metal.
Moreover, the said housing | casing is substantially square pillar shape, and the said speaker grille may be provided over two adjacent side surfaces of the said housing | casing.
Further, the light emitting unit has a plurality of light emitting elements,
The plurality of light emitting elements may be arranged along the tangent side of the two adjacent side surfaces.

Further, the headpiece of the present invention includes a substantially cubic main body having a bottom plate in which an opening having a diameter substantially equal to the diameter of the speaker unit is formed, and a skirt formed between the main body and the speaker unit. And a reflector that reflects the sound emitted by the speaker unit, wherein the headpiece is installed above the speaker unit facing upward, and the main body is adjacent to one of the four side surfaces. A sound emission port is formed on the two side surfaces, and a back plate for restricting the sound propagation direction is formed on two side surfaces of the four side surfaces other than the two adjacent side surfaces. The surface of the shape which joined the two triangles which respectively connect the lower end angle | corner of the said back board and the upper edge of the said sound emission opening | mouth of the said sound emission opening | mouth.

According to the present invention, sound can be reflected and propagated in the direction of the user even if the speaker unit is not facing the front of the user, and the sound reflection surface can be decoratively illuminated with light.

(A) And (B) is an external view of the speaker apparatus which is 1st Embodiment of this invention. 1 is a perspective view of a head piece and a speaker unit according to a first embodiment of the present invention. (A) thru | or (C) is a three-plane figure of a headpiece and a speaker unit. It is a perspective view of a head piece. It is a figure which shows the advancing direction of the sound emitted from a speaker unit, and the advancing direction of the light irradiated from LED. (A) thru | or (C) is an external view of the speaker apparatus which is 2nd Embodiment of this invention. It is an internal block diagram of a speaker apparatus. It is a rear view of the state which removed the speaker grill of the speaker apparatus. It is a top view which shows the example of the installation form of a speaker apparatus. It is a block diagram of the electronic circuit of a speaker apparatus. It is a perspective view which shows the example of the installation form of the speaker apparatus which is 3rd Embodiment of this invention. It is a perspective view of a head piece. (A) thru | or (C) is an external view of the speaker apparatus which is 4th Embodiment of this invention. (A) And (B) is an external view of the speaker apparatus which removed the speaker grille. (A) And (B) is a figure which shows the example of the mesh shape of a speaker grille. It is a figure which shows an example of the installation form of a speaker apparatus. It is a figure which shows the form of the overlap of the shadow projected when the light of LED passes a speaker grille. It is a figure which shows an example of the shadow projected on a wall from a speaker apparatus. It is a figure which shows an example of the shadow projected on a wall from a speaker apparatus. It is a figure which shows an example of the shadow projected on a wall from a speaker apparatus.

[First embodiment]
A speaker and a headpiece to which the present invention is applied will be described with reference to the drawings.
FIG. 1 is an external view of a speaker 1 according to a first embodiment of the present invention. FIG. 4A is a front view, and FIG. 4B is a left side view. In this embodiment, the term “speaker” is used as the name of a device having a speaker unit that is a sounding body and a housing (speaker box) that houses the speaker unit.

As shown in the figure, the casing 11 of the speaker 1 has a substantially quadrangular prism shape, and has a shape whose width is slightly narrowed upward. In other words, it has a quadrangular pyramid shape. The slope of the side with respect to the vertical plane is 2 percent. As shown in the figure, the speaker 1 is installed with the side (ridge line) facing the front instead of the surface. Moreover, the

speaker units

20, 21, and 22 are provided on the upper surface and the rear surface side, and are not provided on the front surface side. A decorative illumination element such as an LED is provided on the front side instead of the speaker unit. A rod-shaped pillow 13 is provided at the bottom of the housing 11. The speaker 1 is supported by the pillow 13 and the disk-shaped base 14 provided at the lower end of the pillow 13. As described above, the speaker provided with the vertically long casing 11 and having the ridge line (angular direction) installed on the front instead of the surface has a characteristic shape and fits well when installed in the corner of the room. .

A speaker grill 12 that covers the

rear speakers

21 and 22 is provided on the rear side of the housing 11. The speaker unit 20 (an example of the first speaker unit) provided upward is fixed to the upper end of the speaker box 30 which is a space formed in the upper part of the housing 11. The head piece 10 of the present invention is provided further above the speaker unit 20. The speaker unit 20, the speaker box 30, and the head piece 10 constitute the speaker device of the present invention.

FIG. 2 is a perspective view of the head piece 10 and the speaker unit 20 taken out from the speaker 1. 3A is a plan view of the headpiece 10 and the speaker unit 20, FIG. 3B is a front view, and FIG. 3C is a right side view. FIG. 4 is a perspective view of the headpiece 10 and shows the internal circuit board 40. In the following description, left and right when the speaker 1 is viewed from the front with the user's line of sight are used for the description in the left and right direction. As for the description of the headpiece 10 in the vertical direction, the vertical direction in a state where the headpiece 10 is installed above the front of the speaker unit 20 installed upward is used.

As shown in FIG. 2, the headpiece 10 has a substantially rectangular parallelepiped shape. However, since the head piece 10 has an integral shape with the housing 11, the head piece 10 is slightly narrowed upward, and the outer diameter (the length of the diagonal line) of the top plate 102 is slightly smaller than the outer diameter of the bottom plate 103. . The head piece 10 includes an upper main body 101 having a sound emission port 110 and a lower skirt 106, and the main body 101 has a substantially cubic shape. The bottom plate 103 of the headpiece 10 has a circular opening 103A at the center. The diameter of the opening 103 </ b> A is substantially the same as the diameter of the speaker unit 20.

The substantially cubic main body 101 has four side surfaces, of which two

side surfaces

111 and 112 on the front side are notched and opened as sound emission ports 110. Wall plates are provided on the two

side surfaces

113 and 114 on the back side, and serve as a back plate 104 that restricts the sound from spreading backward. On the inner side of the main body 101, the lower side (lower end) vertex 105 </ b> C sandwiched between the two

side surfaces

113 and 114, which are the back plate 104, and the two side surfaces, which are the sound emission ports 110 (notched). Reflectors 105 (105A and 105B), which are two triangular surfaces that connect the upper sides of 111 and 112 (the upper edge of the sound outlet 110), are formed. Since the main body 101 is substantially cubic, the left and

right surfaces

105A and 105B of the reflector 105 are at an angle of about 45 degrees with respect to a horizontal plane such as the bottom plate 103, respectively.

As described above, the skirt 106 is formed around the bottom plate 103 of the headpiece 10 so as to face downward. The height of the skirt 106 is about a quarter of the height of the entire head piece 10. The skirt 106 is assembled so that the lower end of the skirt 106 contacts the flange 20A of the speaker unit 20. In the assembled state, the speaker unit 20 and the headpiece 10 share the central axis.

The headpiece 10 and the speaker unit 20 are screwed together and fixed to the housing 11. Thereby, the speaker unit 20 is attached to the upper end of the speaker box 30. The upper end of the speaker box 30 is opened in the shape of the flange 20A of the speaker unit 20, and the speaker unit 20 is mounted on the upper portion, thereby closing the opening and forming a closed space inside.

A space 120 corresponding to the height of the skirt 106 is formed between the speaker unit 20 and the bottom plate 103 of the headpiece 10. The circuit board 40 is provided in the space 120. The circuit board 40 is provided on the front left side, that is, near the lower side of the opened left side surface 111, avoiding the positions of the speaker unit 20 and the opening 103A of the bottom plate 103. An LED 41 is provided on the circuit board 40. The LED 41 is provided at the front center of the headpiece 10, that is, at the front end portion on the front side. By providing the LED 41 at this position, it is not directly visible to the user. Even if the user looks in, it is not visible because of the top plate 102.

FIG. 5 is a diagram showing the traveling direction of sound propagating through the headpiece 10 and the traveling direction of light. The speaker unit 20 is installed below the headpiece 10 and directly above the same central axis. Since the surface of the reflector 105 of the headpiece 10 is about 45 degrees, sound is emitted upward from the speaker unit 20. The sound is reflected by the reflector 105 as indicated by an arrow 201 in the figure and propagated so as to spread diagonally forward on the left and right (an example of a direction including horizontal and horizontal components). As a result, even when sound is emitted upward from the speaker unit 20, it is reflected by the reflector 105 and can be propagated forward and to the left and right with little loss. Further, since it is not necessary to provide a speaker grill on the front surface, the degree of freedom in designing the front surface is improved.

Further, the headpiece 10 including the reflector 105 is molded from resin and is smooth but not a mirror surface. That is, if it is a sound wave, you may think that it reflects regularly, but the thing of a short wavelength like light is considered to be irregularly reflected. The diffuse reflection is a phenomenon in which incident light is reflected in all directions, and it appears as if it is bright (shining). Since the LED 41 is provided on the near side of the space 120 below the bottom plate 103, the LED 41 is not visible to the user. When the LED 41 is lit, the inside of the headpiece 10, that is, the top plate 102, the back plate 104, and the reflector 105 is illuminated as indicated by an arrow 202 in the drawing. In particular, the reflector 105 receives strong light and causes irregular reflection to shine brightly (note that the arrow of irregular reflection light is omitted in the figure). Thereby, the speaker 1 can produce not only music but also a decorative atmosphere.

Note that the speaker 1 and the headpiece 10 are not limited to the shapes described above. Modifications can be made without departing from the spirit of the present invention. For example, the speaker unit 20 of the speaker device 1 can be disposed downward and the headpiece 10 can be disposed below the downward speaker unit 20. When the speaker unit 20 and the headpiece 10 are thus arranged, the reflector 105 has two triangular surfaces that connect the upper end angle of the back plate and the lower sides of the left side surface 111 and the right side surface 112, respectively. . As a result, even if sound is emitted downward from the speaker unit 20, the sound is reflected by the reflector 105 and can be propagated forward and left and right with little loss. Further, the head piece 10 may not include the LED 41.

[Second Embodiment]
Next, a second embodiment will be described. In the description of the second embodiment, members used in the first embodiment may be denoted by the same reference numerals and description thereof may be omitted.

Here, 2nd Embodiment was created based on the following knowledge.

A general stereo speaker system includes speaker boxes for left and right channels, and these are arranged on the left and right (see, for example, Patent Document 2). For this reason, an installation area becomes large, it is difficult to install in the corner of the room, and the degree of freedom in design is low.

Therefore, an invention of a speaker device is disclosed in which a plurality of speaker units are provided on all four side surfaces of a rectangular column-shaped elongated casing, and the casing is installed upright (see, for example, Patent Document 3). This speaker device delays and adjusts the timing at which each speaker unit outputs an audio signal, and outputs a sound beam that is a sound wave with directivity. Since this speaker device outputs an audio beam in the direction of the floor or ceiling of the room and reflects it multiple times, the indirect sound reaches the listener from many directions. Thereby, the effect that the listener does not feel the clear position of the speaker device is obtained.

Even in the speaker device described in Patent Document 2, since the left and right channel speaker rows are separately provided, there is a limit to slimming the housing. In addition, the speaker device described in Patent Document 2 cannot be decorated because a plurality of speaker units are provided on all four side surfaces of the housing as described above, and its design is limited. There's a problem.

Therefore, the present embodiment has been created for the purpose of providing a speaker device that enables stereo sound emission with a slim appearance.
6A and 6B are external views of the speaker device according to the second embodiment. FIG. 6A is a front view, FIG. 6B is a right side view, and FIG. 6C is a rear view. FIG. 7 is an internal configuration diagram of the speaker device. FIG. 8 is a rear view of the speaker device with the speaker grill removed.

The speaker device 1a according to the embodiment of the present invention includes a housing 11 in which a plurality of speakers are accommodated, a disk-shaped base 14 that supports the casing 11 from the floor, and a rod-like connection that connects the casing 11 and the base 14. The pillow 13 is provided. The casing 11 is supported by the pillow 13 and the base 14 and is erected in the vertical direction.

The housing 11 has a substantially quadrangular prism shape and is slightly narrower in the upward direction. In other words, it is a quadrangular pyramid shape (a shape obtained by cutting the apex side (head) of the quadrangular pyramid horizontally with a plane parallel to the bottom surface). The side surface of the housing 11 is inclined by 2 percent with respect to the vertical line.

The speaker grill 12 is provided so as to straddle the ridge line portion 18 of the housing as shown in FIG. In the following description, the direction of the ridge line portion 18 shown in FIG. 6C will be described as the back direction, and the direction of the opposite ridge line portion 19 shown in FIG. 6A will be described as the front direction. However, it is free to set which one is the front (toward the user). In the following description, it is assumed that the front direction is called the front and the back direction is called the rear. Moreover, the direction when the speaker apparatus 1a is seen from the user of the front direction is used for the left and right directions.

The inside of the housing 11 is partitioned by two partition plates, and has a structure having three spaces in the vertical direction. The middle space speaker box 30 in which the upper space accommodates the speaker unit 20 (an example of the first speaker unit), the stereo speaker box 31 in which the central space accommodates the

speaker units

21a and 22a, and the lower space is the electronic circuit 15 Is used as a circuit box 32 that accommodates.

FIG. 7 is an internal structure diagram of the state in which the front housing 11 is cut away. FIG. 8 is a rear view with the speaker grill 12 removed. As shown in FIGS. 7 and 8, the stereo speaker box 31 is opened on the back side, and the baffle plate 24 is provided in the opening. The baffle plate 24 is not a flat surface, but is curved to the left and right according to the shape of the quadrangular prism housing 11.

Speaker units

21 a and 22 a are attached to the baffle plate 24, and a bass reflex port 23 is provided. The speaker unit 21a (an example of a second speaker unit) is a right channel speaker unit, and is attached obliquely rearward to the right. The speaker unit 22a (an example of a third speaker unit) is a left channel speaker unit, and is attached obliquely left rearward. The

speaker units

21a and 22a are respectively attached in an oblique direction about 45 degrees to the left and right with respect to the back direction. The bass reflex port 23 is provided facing the back and opens into the stereo speaker box 31 through the duct 125. Since the bass reflex port 23 is mainly for emphasizing bass, there is little need to consider the channel and directivity. For this reason, the left and right channels are opened in the middle direction. The baffle plate 24 is covered with the speaker grill 12. The speaker grill 12 is made of a metal mesh, and is substantially flush with the housing 11 as shown in FIG.

Further, the mid-range speaker box 30 is open on the upper surface, and the speaker unit 20 is mounted upward in this opening. A headpiece 10 that reflects the sound emitted from the speaker unit 20 forward is provided above the speaker unit 20.

FIG. 9 is a plan view showing an installation form of the speaker device 1a. FIG. 6A is a diagram showing a state in which the rear surface of the speaker device 1a, that is, the

speaker units

21a and 22a are installed facing forward (toward the user). FIG. 5B is a diagram showing a state in which the speaker device is installed with the front facing forward and the

speaker units

21a and 22a facing the rear wall 300. FIG. In any case, audio signals of separate channels (in this embodiment, left and right channels) are input to the

speaker units

21a and 22a, respectively.

9A, the sound emitted from the

speaker units

21a and 22a propagates diagonally left front and diagonally right forward, respectively. As the sound propagates to the left and right, a sense of spread is given to the sound, and since the sound propagated to the left and right is the sound of different channels, a stereoscopic stereo sensation can be given to the user.

Further, as shown in FIG. 9B, when the

speaker units

21a and 22a are installed so as to face the wall 300, the sound emitted from the

speaker units

21a and 22a propagates while spreading to the left and right and propagates to the wall surface. Reflected in the vicinity of 300

areas

301 and 302. The reflected sound propagates forward and reaches the user. As a result, the left and right channel sounds emitted from the

speaker units

21 a and 22 a that are arranged in the vertical direction and do not have the arrangement width in the horizontal direction are released from the

areas

301 and 302 having the width in the horizontal direction on the wall surface 300. Propagating to the user like a sound that has been sounded, it is possible to make the user listen to a wide stereo sound.

6, the electronic circuit 15 is built in the circuit box 32 of the housing 11. FIG. 10 is a block diagram of the main part of the electronic circuit 15. The electronic circuit 15 includes a controller 50, a signal processing unit 51, an audio amplifier 52, an input selection unit 53, a Bluetooth (registered trademark) communication circuit 54, a cable connector 55, and the like.

The controller 50 is composed of a microcomputer. The controller 50 is connected to a light receiving circuit 40a that receives an infrared signal transmitted by an infrared remote controller (not shown). The light receiving circuit 40 a includes a light receiving element 42 provided in front of the housing 11, converts the received infrared signal into an electronic signal, and inputs the electronic signal to the controller 50. Based on the signal input from the light receiving circuit 40a, the controller 50 selects an input signal in the input selection unit 53, adjusts the sound quality in the signal processing unit 51, adjusts the volume of the audio amplifier 52, and turns on / off the Bluetooth communication circuit 54. Turn off.

The signal processing unit 51 adjusts the sound quality of the (2-channel stereo) audio signal input from the input selection unit 53, extracts the mid-range components from the left and right channel signals, synthesizes them, and combines them with the third channel. Output as an audio signal. That is, the signal processing unit 51 functionally includes

bandpass filters

66 and 67 and a mixer 68. The audio amplifier 52 functionally includes three-

channel amplifier circuits

64, 65, and 69, and amplifies the left-channel, right-channel, and mid-range audio signals, respectively. The amplifier circuit 64 amplifies the left channel audio signal and outputs the signal to the speaker 22a. The amplifier circuit 65 amplifies the right channel audio signal and outputs the signal to the speaker 21a.

In the electronic circuit 15, a right channel audio signal is input to the speaker unit 21a, and a left channel audio signal is input to the speaker unit 22a. That is, as shown in FIG. 9B, the speaker unit 21a. , 22a is assigned to the left and right channels when installed so as to face the wall 300 (opposite to the user). However, in the case of the arrangement as shown in FIG. . Further, a reverse switch may be provided so that the channels of the audio signal input from the input selection unit 53 to the

amplifier circuits

64 and 65 and the band pass filters 66 and 67 can be switched.

As described above, the speaker unit 20 provided on the upper surface of the housing 11 reinforces mid-range sound. The band-pass filter 66 extracts a mid-range (for example, 100 Hz to 7 kHz) from the audio signal of the left channel and outputs it to the mixer 68. Similarly, the band-pass filter 67 extracts the mid-range from the right channel audio signal and outputs it to the mixer 68. The mixer 68 synthesizes the input mid-range audio signal of the left channel and the mid-range audio signal of the right channel, and outputs this synthesized signal to the amplifier 69. The amplifier 69 amplifies the mid-range synthesized signal and outputs it to the speaker unit 20. Therefore, the synthesized sound in the middle range of the left and right channels is emitted from the speaker unit 20. Further, the bands extracted by the bandpass filters 66 and 67 are not limited to the middle sound range. Even when sound in a band other than the mid-range is emitted from the speaker unit 20, it is possible to obtain an effect corresponding to each band.

In the above embodiment, the two

speaker units

21a and 22a are vertically arranged on the baffle plate 24, but the number is not limited to two. Also, the number of audio channels input to the plurality of speaker units is not limited to two.

Note that the shape of the housing 11 of the speaker device 1a is not limited to a quadrangular frustum shape, and may be a substantially columnar shape such as a truncated cone shape, a columnar shape, or a polygonal columnar shape. Any component of this embodiment can be freely modified without departing from the spirit of the present invention.
Moreover, as shown in FIG. 4, the head piece 10 of the speaker device 1a may include the LED 41 inside as shown in FIG. 4, or may not include the LED 41 inside the head piece 10. good.

[Third Embodiment]
Next, a third embodiment will be described. In the description of the third embodiment, members used in the first embodiment and the second embodiment may be denoted by the same reference numerals and description thereof may be omitted.
Here, the third embodiment is created based on the following knowledge.

The speaker unit is almost a point sound source, but when the distance is increased, an acoustic space called a sound field can be formed by sound diffusion. In order to form this sound field, a certain distance or more is required between the user who is a listener and the speaker device.

Also, in the case of a stereo system, the left and right channel speakers need to be separated to some extent in order to have the stereo localization between the left and right channel audio. For this purpose, a speaker device (speaker box) having a width on the left and right is required, for example, as shown in Patent Document 2.

However, there are cases where it is not possible to keep the distance between the user and the speaker device in a small room or the like, and in such a case, it is not possible to give a sufficient spread to the emitted sound. In addition, the left and right speaker boxes may not be installed with sufficient distance due to the space of the installation location or the case structure. In such cases, the stereo orientation and spaciousness may be sufficiently produced. could not. Furthermore, if the speaker device housing is designed around the arrangement of the speaker units, the degree of freedom in design is reduced, and a speaker device with a novel design cannot be obtained.

Therefore, the present embodiment has been created for the purpose of enabling sound to be emitted with a slim speaker device installed in a narrow place.
The configuration of the speaker device 1b according to the third embodiment is the same as that of the speaker device 1a of the second embodiment. FIG. 6 (A) is a front view, FIG. 6 (B) is a right side view, and FIG. It is a rear view. FIG. 8 is a rear view of the speaker device 1b with the speaker grill 12 removed.

FIG. 11 is a perspective view showing an example of an installation form of the speaker device 1b. As shown in FIG. 11, the speaker device 1 b is installed with the ridge line portion 19 sandwiched between two side surfaces as the front surface (user direction). In the following description, the front direction is referred to as the front, and the back direction is referred to as the rear. Moreover, the direction when the speaker apparatus 1b is seen from the user of the front direction is used for the left and right directions.

In the speaker device 1b, the speaker units 21a and 22b are provided obliquely backward. For this reason, as shown in FIGS. 6B and 6C, the speaker grill 12 is provided on the back side of the housing 11. As shown in FIG. 6C, the speaker grill 12 is provided across the ridge line portion 18 of the housing.

FIG. 12 is a perspective view of the head piece 10. The headpiece 10 includes an upper main body portion 101 having a sound emission port 110, a top plate 102 disposed on the upper surface of the main body portion 101, and a lower skirt 106. The main body 101 has a substantially cubic shape. The bottom plate 103 of the headpiece 10 has a circular opening 103A at the center. The diameter of the opening 103A is substantially the same as the diameter of the speaker unit 20 (an example of the first speaker unit).

On the inner side of the main body 101, the lower apex 105 </ b> C between the two

side surfaces

113 and 114, which are the back plate 104, and the two

side surfaces

111 and 112, which are the sound emission ports 110 (notched). Reflector 105 (105A, 105B) which is a surface of two triangles connecting the upper side is formed. Since the main body 101 is substantially cubic, the left and

right surfaces

The sound emitting surface of the speaker unit 20 is installed below the headpiece 10 and directly above the same central axis. Further, the surface of the reflector 105 of the headpiece 10 is disposed to face the sound emitting surface of the speaker unit 20, and the inclination angle thereof is about 45 degrees. Therefore, the sound emitted upward from the speaker unit 20 is reflected by the reflector 105 and propagated so as to spread diagonally forward on the left and right as indicated by an arrow 201a shown in FIG. As a result, the sound is emitted upward from the speaker unit 20, reflected by the reflector 105, and can be diffused and propagated from the front side of the side surface of the housing 11 to the front left and right direction with a small loss with a short distance.

Further, as shown in FIG. 11, the speaker device 1b is installed with its back facing the wall 80 in front of one wall 80 (an example of at least one wall). There is no speaker unit or speaker grill on the front side of the speaker device 1b, and the degree of decorative freedom on the surface visible to the user is high.

Further, as shown in FIG. 9B, the

speaker units

21a and 22a face the wall 300 (an example of at least one wall), but each face in a direction inclined to the left and right with respect to the front direction of the wall 300. The left channel audio signal is input to the speaker unit 22a (an example of the second speaker unit), and the right channel audio signal is input to the speaker unit 21a (an example of the second speaker unit). The sound emitted by the

speaker units

22 a and 21 a propagates while spreading to the left and right and is reflected near the

areas

302 and 301 of the wall surface 300. The reflected sound propagates forward and reaches the user. As a result, the sound of the left and right channels emitted from the

speaker units

22a and 21a propagates in the direction of the user via the

speaker units

22a and 21a-

areas

302 and 301, and through a longer distance than when directly propagated. Reach the user. As a result, it is possible to make the sound broader than directly propagating. Also, the sound of the left and right channels is reflected by the

areas

302 and 301 of the wall surface 300, so that the sound generation positions of these left and right channels are virtually localized in the

areas

302 and 301, and the sound is emitted from the

areas

302 and 301. Can be transmitted to the user, and the stereo sound with a sense of localization having a breadth can be heard. Here, the wall 300 may be a substantially vertical plane that reflects sound, and is not necessarily a wall of a building.

In this way, the sound emitted from the

speaker units

21a and 22a is reflected by the wall surface 300 and propagates in the user direction, and the sound emitted from the speaker unit 20 is reflected by the reflector 105 of the headpiece 10 and is directed to the user direction. Therefore, even if the distance between the speaker device 1b and the user is short, it is possible to make the user listen to a sound that spreads beyond the actual distance. Moreover, as shown in FIG. 4, the head piece 10 of the speaker device 1b may include the LED 41 inside as shown in FIG. 4, or may not include the LED 41 inside the head piece 10. good.

[Fourth Embodiment]
Next, a fourth embodiment will be described. In the description of the fourth embodiment, members used in the first to third embodiments may be assigned the same reference numerals and description thereof may be omitted.
Here, the fourth embodiment is created based on the following knowledge.
Proposals have been made to use the speaker device not only as an audio device but also as decorative illumination. For example, Patent Document 4 discloses an audio system invention in which a light source and a rotating body are provided inside a speaker box, and light reflected from the surface of the rotating body is irradiated from the opening of the speaker box to the outside of the speaker box. It is disclosed.

In the speaker device described in Patent Document 4, light is emitted from the speaker box, and the light rotates according to the sound to be emitted to produce a decorative effect. However, the rotating body and the motor are placed in the speaker box. Since it is a structure which provides and rotates a rotary body with a motor, there exists a problem that an apparatus will enlarge and become complicated.

Therefore, the present embodiment is created for the purpose of providing a speaker device capable of decorative illumination with a simple configuration.
13A and 13B are external views of the speaker device 1c according to the fourth embodiment. FIG. 13A is a front view, FIG. 13B is a right side view, and FIG. 13C is a rear view. 14A and 14B are external views of the speaker device with the speaker grill removed. FIG. 14A is a right side view and FIG. 14B is a rear view.

The speaker device 1c according to the embodiment of the present invention includes a housing 11 in which a plurality of speakers are accommodated, a disk-shaped base 14 that supports the housing 11 from the floor, and a rod-like shape that connects the housing 11 and the base 14. The pillow 13 is provided. The casing 11 is supported by the pillow 13 and the base 14 and is erected in the vertical direction.

The speaker device 1c is installed with the ridge line portion 19 sandwiched between the two side surfaces as the front surface (user direction). In the following description, the front direction is referred to as the front, and the back direction is referred to as the rear. Moreover, the direction when the speaker apparatus 1c is seen from the user of the front direction is used for the left and right directions.

In the speaker device 1c, the speaker unit is provided not facing forward but facing backward. For this reason, as shown in FIGS. 13B and 13C, the speaker grill 12 is provided on the back side of the housing 11. Thereby, it is not necessary to provide the speaker grille 12 on the front side of the speaker device 1c, and the decorative LED 16 is provided on the ridge line portion 19 on the front surface of the housing 11.

The back speaker box 31 is open over two adjacent side surfaces on the back side, and a baffle plate 24 is provided in the opening. The baffle plate 24 is not a flat surface, but is curved to the left and right according to the shape of the housing 11 in the opening.

Speaker units

21a and 22a, a bass reflex port 23, and a plurality of LEDs 25 are attached to the baffle plate 24. The speaker unit 21a is a right channel speaker unit, and is attached obliquely rearward to the right. The speaker unit 22a is a left channel speaker unit, and is attached obliquely left rearward. The bass reflex port 23 opens into the stereo speaker box 31 through a duct. A plurality of LEDs 25 are arranged in the vertical direction on the ridge line portion (front surface viewed from the back) of the baffle plate 24. This figure shows an example in which five LEDs 25 are provided.

The baffle plate 24 is covered with the speaker grill 12. As shown in FIG. 13, the speaker grill 12 is formed substantially flush with the housing 11 and is curved left and right. The speaker grill 12 is a mesh-like plate material having a plurality of holes formed for the first purpose of protecting the

speaker units

21a and 22a. For example, the speaker grill 12 may be an expanded metal shown in FIG. The punching metal shown in B) is used.

Further, the upward speaker box 30 is open on the upper surface, and the speaker unit 20 is mounted upward in this opening. A headpiece 10 that reflects the sound emitted from the speaker unit 20 forward is provided above the speaker unit 20. As shown in FIG. 4, the headpiece 10 incorporates an LED 41. During the operation of the speaker device 1c, the LED 41 is lit to illuminate the inner surface of the headpiece 10 in a decorative manner.

FIG. 16 is a diagram illustrating an example of an installation form of the speaker device 1c. FIG. 17 is a diagram illustrating a form in which light from the LED 25 is transmitted through the speaker grill 12. As shown in FIG. 16, the speaker device 1c is installed with a wall 80 as a back along a corner or wall surface of the room. Since there is no speaker unit or speaker grill on the front side, the LED 16 is provided in a decorative manner, and the light from the LED 25 provided in the speaker grill 12 is projected toward the wall 80. Twelve patterns are projected on the wall 80, and function as a decorative interior unlike a general speaker device.

When a plurality of (five) LEDs 25 provided inside the speaker grill 12 emit light, the light of each LED 25 becomes a light and shadow pattern (pattern) by the mesh of the speaker grill 12 respectively. Then, the pattern of each LED 25 is projected onto the wall 80 while overlapping each other as shown in FIG. In FIG. 17, the speaker grill 12 is represented by a single line. However, as shown in FIG. 13, the speaker grill 12 is curved to the left and right in accordance with the shape of the housing 11, so The projected pattern becomes more complicated and the decorativeness can be improved.

18 to 20 are diagrams showing light and shadow patterns of the LED 25 projected onto the wall 80 from the speaker device. FIG. 18 shows an example in which expanded metal is used sideways as the speaker grill 12. FIG. 19 shows an example in which expanded metal is used in the vertical direction as the speaker grill 12. FIG. 20 shows an example in which punching metal is used sideways as the speaker grill 12.

When the expanded metal is used sideways, the speaker grille 12 having a horizontally long rhombus opening pattern as shown in FIG. When a plurality of lights transmitted through the opening pattern overlap, an intersecting light and shadow pattern spreading in the horizontal oblique direction as shown in FIG.

When the expanded metal is used in the vertical direction, the speaker grille 12 having a vertically long rhombus opening pattern obtained by rotating the shape shown in FIG. When a plurality of lights transmitted through the opening pattern overlap, an intersecting light and shadow pattern having a spread in a vertically oblique direction as shown in FIG.

When punching metal is used, the speaker grill 12 having an opening pattern in which round holes as shown in FIG. When a plurality of lights that have passed through the opening pattern overlap, a light and shadow pattern that is regularly repeated vertically and horizontally as shown in FIG.

Note that the intervals between the LEDs 25 may be equal intervals or different intervals. In addition, all of the plurality of LEDs 25 may be constantly lit, but the blinking may be sequentially repeated at different timings. Thereby, the projected pattern can be changed.

Note that the shape of the housing 11 of the speaker device 1c is not limited to a quadrangular pyramid shape, and may be a truncated cone shape, a columnar shape such as a columnar shape, a polygonal prism shape, or a rectangular parallelepiped shape, and does not impair the spirit of the present invention. The deformation is free. Further, a speaker device used in an arrangement in which a speaker unit and illumination (light emitting unit) are arranged on the front surface of the speaker device and the front surface is opposed to the wall surface also belongs to the technical scope of the present invention.
Further, as in the first embodiment, the head piece 10 of the speaker device 1c may include the LED 41 inside as shown in FIG. 4 or may not include the LED 41 inside the head piece 10. good.

DESCRIPTION OF SYMBOLS 1 Speaker (device) 10 Headpiece 11 Housing 12 Speaker grill 20 Speaker unit 40 Circuit board 41 LED 101 Main body 102 Top plate 103 Bottom plate 103A Opening 104 Back plate 105 Reflector

1a Speaker device

21a Speaker unit

22a Speaker unit 23 Bus reflex port 300 Wall 1b Speaker device 80 Wall 1c Speaker device 25 LED

Claims

A first speaker unit installed upward;
A headpiece provided on the first speaker unit and having a reflector that reflects the sound emitted by the first speaker unit in a direction including a horizontal component;
A light emitting element disposed between the first speaker unit and the head piece and facing the reflector;
A speaker device comprising:
The head piece has a substantially cubic body part and a skirt formed around the lower part of the body part,
On the bottom plate of the main body, an opening having a diameter substantially the same as the diameter of the first speaker unit is formed,
Sound outlets are formed on two adjacent side surfaces of the four side surfaces of the main body, and the sound propagation direction is set on the other two side surfaces of the four side surfaces other than the two adjacent side surfaces. A regulating back plate is formed,
2. The speaker device according to claim 1, wherein the light emitting element is installed at a corner portion on the sound emitting side between the bottom plate and the first speaker unit inside the skirt. 3.
3. The speaker device according to claim 2, wherein the reflector has a surface formed by joining two triangles respectively connecting a lower end angle of the back plate and an upper edge of the sound emission opening.
4. The speaker device according to claim 2, wherein the light emitting element is installed at a position closer to a corner on the sound emitting side than the opening formed in the bottom plate in a plan view.
A second speaker unit and a third speaker unit arranged in a vertical direction below the first speaker unit, each in a different direction;
5. The speaker device according to claim 1, wherein signals of channels different from each other are input to each of the second and third speaker units. 6.
The second and third speaker units are accommodated in one speaker box,
The one speaker box has a bass reflex port that is arranged in the vertical direction with respect to the second and third speaker units and opens in an intermediate direction between the directions of the second and third speaker units. The speaker device according to claim 5.
6. The second and third speaker units are installed between a listener and a wall surface that reflects the sound emitted from the second and third speaker units so that the second and third speaker units are located on the wall surface side. Or the speaker apparatus of 6.
A second speaker unit installed on the back side of the housing and provided toward the back direction;
5. The speaker device according to claim 1, wherein the rear surface side is disposed so as to face at least one wall that reflects the sound emitted from the second speaker unit.
The speaker device according to claim 8, wherein the speaker device is installed at a corner of a room so that the sound emitted from the second speaker unit is reflected by two adjacent walls as the at least one wall.
The speaker device according to claim 8, wherein the speaker device is installed so that the sound emitted from the second speaker unit is reflected by one wall as the at least one wall.
11. The reflector according to claim 8, wherein the reflector reflects and propagates the sound emitted by the first speaker unit in a wider angle range than a case where the sound travels straight from the first speaker unit. Speaker device.
A speaker device arranged at a distance from a wall surface,
A speaker grill provided on the surface of the housing facing the wall surface and having a plurality of holes formed therein;
A speaker unit disposed inside the speaker grill and emitting sound toward the wall surface;
A light emitting unit disposed on the inside of the speaker grill and irradiating light toward the wall surface through the speaker grill;
A speaker device comprising:
The speaker device according to claim 12, wherein the speaker grill is formed of expanded metal or hunting metal.
The housing has a substantially quadrangular prism shape,
The speaker device according to claim 12 or 13, wherein the speaker grill is provided over two adjacent side surfaces of the casing.
The light emitting unit has a plurality of light emitting elements,
The speaker device according to claim 14, wherein the plurality of light emitting elements are arranged along a tangent of the two adjacent side surfaces.
A substantially cubic body having a bottom plate with an opening having a diameter substantially the same as the aperture of the speaker unit;
A skirt formed between the main body and the speaker unit;
And a reflector that reflects the sound emitted by the speaker unit, and a headpiece that is installed above the speaker unit facing upward,
The main body portion is formed with sound emission ports on two adjacent side surfaces of the four side surfaces, and the sound propagation direction is restricted on two side surfaces of the four side surfaces other than the two adjacent side surfaces. A back plate is formed,
The reflector is a headpiece having a surface formed by joining two triangles connecting the lower end corner of the back plate and the upper edge of the sound emission opening.