JPH062889U - Speaker - Google Patents

Abstract

(57) [Abstract] [Purpose] By providing a variable mechanism that changes the direction of sound in the speaker body, the sound emitted from the speaker can be changed in any direction and the place where no sound can be heard is eliminated. A loudspeaker body 1, a louver unit 30 rotatably attached to a loudspeaker mount base 2 arranged on the front surface of the loudspeaker body 1, and a louver 35 pivotably supported by the louver unit 30. And a variable mechanism 3 having, and rotating and tilting the variable mechanism changes the direction of the sound generated from the speaker body 1 in an arbitrary direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a speaker, and more particularly to a speaker provided with a variable mechanism that changes the direction of output sound and appropriately transfers the sound in a required direction.

[0002]

[Prior art]

 In the conventional speaker, as shown in FIG. 6, the sound output from the speaker a is directly emitted from the conical horn b to the outside.

[0003]

[Problems to be solved by the device]

 However, in the above-described conventional speaker, the directivity of sound is limited. Therefore, when a plurality of large automobiles such as four (sp1 to sp4) are arranged in the front row as shown in FIG. The sound of the speaker sp1 does not directly reach the guide G standing outside the pointing range of the speaker sp1. Therefore, the guide G hears the sound reflected by the glass, the wall, etc., and the confirmation of the sound, that is, the communication may be neglected. Further, FIG. 8 shows a state in which four speakers are installed in a conventional passenger car, and in this case also, there is a problem similar to or similar to the problem described above.

According to the present invention, by providing a variable mechanism for changing the direction of sound in the speaker body, the sound emitted from the speaker can be changed in an arbitrary direction to eliminate a place where no sound can be heard. An object is to provide a speaker that can be used.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the present invention provides a speaker main body, a speaker mount mounted on the front surface of the speaker main body, and a louver unit rotatably attached to the speaker mount. And a variable mechanism having a louver pivotably supported by the louver unit.

[0006]

[Action]

 The sound emitted from the speaker body is reflected by the louver unit that rotates with respect to the speaker body and the louver that tilts with respect to this louver unit, and the direction of the sound is changed to an arbitrary direction.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a speaker of the present invention.

FIG. 2 is a cross-sectional view showing a mounted state of a main part.

The speaker of the present invention comprises a speaker body 1, a speaker mount base 2 mounted on the front surface of the speaker body 1, and a variable mechanism 3.

The speaker body 1 has a flange 11 formed around a circular opening and a fixing hole 12 for the speaker mount base 2 formed in the flange 11.

The speaker mount base 2 has an annular band 21 and mounting pieces 22 protruding outward at 90-degree intervals on the outer circumference of the annular band 21, and the annular band 21 is for fixing to the speaker body 1. A hole 23 and a mounting hole 24 for the variable mechanism 3 are formed in the mounting piece 22.

The variable mechanism 3 includes a louver unit 30 formed in an annular shape and a louver 35 pivotally supported by the louver unit 30 so as to be tiltable.

The louver unit 30 has a speaker mount base 22 and a mounting long hole 32 formed in an annular portion 31, and is provided with two pairs of support pieces 33 that are bent upward at the periphery. Similar to that shown in FIG. 4, a bolt fastening shaft hole 34 is formed in the support piece 33, and a rotary shaft 36 of a louver 35 is pivotally supported in the shaft hole 34.

Two louvers 35 are provided and are pivotally supported by each of a pair of support pieces 33 formed in the louver unit 30. Each louver 35 connects two flat plates 37, 37 ′ by a hinge 38 so that the angle can be adjusted, and forms a rotary shaft 36 at the end of the flat plate 37. The rotary shaft 36 is inserted into a shaft hole 34 formed in the louver unit 30 and is pivotally supported so as to be tiltable with respect to the louver unit 30. In this embodiment, the tilt angle can be adjusted by the rotary shaft 36 as well as the angle by the hinge 38. However, as shown in FIGS. 3 and 4, the angle adjustment is performed by using the bent louver 35a. It is also possible to provide a screw (for tightening) portion on 37 and perform it at one place with a bolt or the like. Alternatively, the louver 35 may be formed of a flat plate 37 as shown in FIG.

To attach the variable mechanism 3 to the speaker mount base 2, as shown in FIG. Align with the mounting long hole 32, and tighten with the bolt 4 through the spacer 41 and the washer 42. As a result, the variable mechanism 3 rotates with respect to the speaker mount 2 within the range of the mounting elongated hole 32. The rotation angle can be adjusted by the length of the long hole.

[0017]

[Effect of device]

 As explained above, a variable mechanism that changes the direction of the generated sound is provided in front of the speaker body, and by changing the direction of the generated sound to the desired direction, the place where the sound does not reach is eliminated and normal You can check the sound and speech.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a speaker of the present invention.

FIG. 2 is a cross-sectional view of an essential part showing a mounted state of a variable mechanism of the present invention.

FIG. 3 is a side view showing a second embodiment of the present invention.

FIG. 4 is a perspective view showing a main part of a second embodiment of the present invention.

FIG. 5 is a side view showing a third embodiment of the present invention.

FIG. 6 is a side view showing a conventional speaker.

FIG. 7 is an explanatory diagram illustrating a conventional problem.

FIG. 8 is a simplified diagram showing a conventional passenger car with four speakers installed.

[Explanation of symbols]

 1 Speaker Main Body 2 Speaker Mount Base 3 Variable Mechanism 21 Annular Band 22 Mounting Piece 24 Mounting Hole 30 Louver Unit 31 Annular Portion 32 Mounting Long Hole 33 Supporting Piece 35 Louver 36 Rotating Shaft 37 Flat Plate

Claims (1)

[Scope of utility model registration request] 1. A speaker main body, a speaker mount base disposed on the front surface of the speaker main body, a louver unit rotatably attached to the speaker mount base, and a tiltable pivotally supported unit. And a variable mechanism having a louver.