JP2014216741A - Speaker device and head piece to be used in speaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker device for propagating sound with excellent sound quality to a user in front of the device and increasing the degree of freedom in design.SOLUTION: A speaker device includes a speaker unit arranged to face upward; a head piece arranged on the speaker unit; and a light emitting element arranged at a position not to block the propagation of sound between the speaker unit and the head piece. The head piece includes a reflector for laterally reflecting sound emitted by the speaker unit. The light emitting element is arranged to face the reflector. The reflector may have a surface in a shape where two triangles from the lower end corner of a back board to the upper sides of a sound emission port are joined.

Description

  The present invention relates to a speaker box provided with a speaker unit facing upward.

  In general, many speaker devices have a box shape in which a speaker unit is attached to a front surface which is a front direction to a 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.

JP 2007-274313 A

  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.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a speaker device capable of propagating sound with good sound quality to a user in front and having a higher degree of design freedom, and a headpiece used in the speaker device.

  The speaker device according to the present invention includes a speaker unit installed upward, a headpiece provided on the speaker unit, and a light emitting element provided at a position that does not hinder the propagation of sound between the speaker unit and the headpiece. And. The headpiece has a reflector that reflects the sound emitted by the speaker unit in the lateral direction, and the light emitting element is provided toward the reflector.

In another embodiment 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 body portion has an opening having a diameter substantially the same as the diameter of the speaker unit. A bottom plate, a sound outlet provided by cutting out two adjacent side surfaces of the four side surfaces of the main body, and a back plate as a wall surface of the other two side surfaces. The light emitting element is provided at the corner on the sound emission side between the bottom plate inside the skirt and the speaker unit.
Further, the reflector may be a surface having a shape obtained by joining two triangles directed from the lower end corner of the back plate toward the upper side of the sound emission opening.

  The headpiece according to the present invention is a sound reflecting member provided on the front surface of the speaker unit, and has a substantially cubic main body and a skirt formed below the main body. The main body is a bottom plate having an opening having a diameter substantially the same as the diameter of the speaker unit, a sound outlet provided by cutting out two adjacent side surfaces, and a wall surface on the other two side surfaces, and restricts the sound propagation direction. And a reflector, which is a surface formed by joining two triangles directed from the lower end corner of the back plate toward the upper side of the sound emission port.

  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.

External view of speaker which is embodiment of this invention The perspective view of the headpiece and speaker unit which are embodiment of this invention Three views of headpiece and speaker unit Headpiece perspective The 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 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 an 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 housing 11 of the speaker 1 has a substantially quadrangular prism shape, and has a shape whose width slightly narrows 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 speakers 21 and 22 on the back side is provided on the back side of the housing 11. The speaker unit 20 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. Above the speaker unit 20, a head piece 10 which is another embodiment of the present invention is provided. 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 speaker 1 with the headpiece 10 and the speaker unit 20 taken out. FIG. 3 is a three-view diagram of the headpiece 10 and the speaker unit 20. 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 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 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 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 is in contact with the flange 20 </ b> A 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 transmitted sound is reflected by the reflector 105 as indicated by an arrow 201 in the figure and propagates so as to spread diagonally forward on the left and right. 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 head piece 10 including the reflector 105 is formed of 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.

  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.

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

Claims (4)

A speaker unit installed upward;
A headpiece provided on the speaker unit and having a reflector that reflects the sound emitted by the speaker unit in a lateral direction;
A light emitting element provided toward the reflector at a position between the speaker unit and the head piece and not impeding the propagation of sound between the speaker unit and the head piece;
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,
The bottom plate of the main body is opened with a diameter substantially the same as the diameter of the speaker unit,
Of the four side surfaces of the main body, two adjacent side surfaces are cut out to form a sound emission port, and the other two side surfaces are back plates that regulate the propagation direction of the sound,
The speaker device according to claim 1, wherein the light emitting element is provided between the bottom plate on the inner side of the skirt and the speaker unit and at a corner portion on the sound emission side.   The speaker device according to claim 2, wherein the reflector is a surface formed by joining two triangles from a lower end corner of the back plate toward an upper side of the sound emission port. A sound reflecting member provided in front of the speaker unit,
A substantially cubic body and a skirt formed under the body;
The main body is
A bottom plate having an opening having substantially the same diameter as the diameter of the speaker unit;
A sound outlet provided by cutting out two adjacent sides;
A back plate which is a wall surface of the other two side surfaces and regulates the propagation direction of the sound;
A reflector that is a surface formed by joining two triangles directed from the lower end corner of the back plate toward the upper side of the sound emission opening;
Headpiece equipped with.