CN218634237U - Sound box - Google Patents

Abstract

The utility model belongs to the technical field of the speaker, concretely relates to audio amplifier. The utility model discloses an audio amplifier includes box and two at least first speakers, and on two at least first speakers located the box, two at least first speakers set up along the first direction interval, and can follow the first direction motion along the first speaker of the at least one end of first direction, and wherein, first direction is crossing with the horizontal direction. According to the sound box, the at least two first loudspeakers are arranged at intervals along the first direction, the first loudspeakers at least one end of the first direction can move along the first direction, so that the distance between the first loudspeakers arranged at two ends along the first direction is changed, the beam width of sound waves formed by the at least two first loudspeakers is adjusted, the distance between a reflection point of the beam reaching the sound reflection plate and the sound box is adjusted to be larger than the distance between a listener and the sound box, interference of reflected waves is reduced, and the sound box can receive good listening effect after the distance between the listener and the sound box is changed.

Description

Sound box

Technical Field

The utility model belongs to the technical field of the speaker, concretely relates to audio amplifier.

Background

The directivity of a sound source represents the spatial distribution of the intensity of the sound radiated by the sound source. The directivity control in the vertical direction can effectively avoid the reflection of the ceiling and the ground in a room to sound, and avoid the serious sound pollution problem caused by too much reflected sound at a listening position. But the beam width requirements are different for different listening locations, or different room heights.

As shown in fig. 1, when a listener is located at a position L1 from the existing sound box device, the sound wave emitted by the existing sound box device is not reflected by the ceiling and the bottom surface, the reflected sound falls at a position behind the listener, and the reflected sound is not superposed with the normal sound wave emitted by the existing sound box device, so that the listening effect of the listener is not affected. When the listener moves to the position L2 from the sound box equipment, because the wave beam width of the sound wave emitted by the existing sound box equipment is fixed, the sound wave is reflected by the ceiling and the bottom surface, and the reflected sound falls on the front position of the listener, so that the reflected sound is superposed with the normal sound wave emitted by the existing sound box equipment, and the listening effect of the listener is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the fixed problem of beam width of the sound wave that current audio amplifier equipment sent at least. This object is achieved by:

the utility model discloses a first aspect provides an audio amplifier, the audio amplifier includes:

a box body;

the loudspeaker box comprises at least two first loudspeakers, wherein the at least two first loudspeakers are arranged on the box body, the at least two first loudspeakers are arranged at intervals along a first direction, the first loudspeakers at least one end of the first direction can move along the first direction, and the first direction is intersected with the horizontal direction.

According to the sound box, the at least two first loudspeakers are arranged at intervals along the first direction, and the first loudspeaker at least one end of the first direction can move along the first direction, so that the space size between the first loudspeakers arranged at two ends along the first direction is changed, the beam width of sound waves formed by the at least two first loudspeakers is reduced, the space size between the reflected sound formed by the at least two first loudspeakers and the sound box is increased, and the listener can receive a good listening effect after the space size between the listener and the sound box is increased.

In addition, according to the utility model discloses a loudspeaker box still can have following additional technical characterstic:

in some embodiments of the invention, the first direction is a vertical direction.

In some embodiments of the present invention, the first speaker disposed at both ends along the first direction is movable along the first direction, respectively.

In some embodiments of the present invention, the sound box further comprises a driving unit, the driving unit is provided with at least one driving end, the driving end is connected to the first speaker along the end portion arranged in the first direction, and is used for driving the first speaker to move.

In some embodiments of the present invention, the driving unit includes two driving ends, two the driving ends are respectively connected to the first speaker along the two ends of the first direction.

The utility model discloses an in some embodiments, drive unit is linear drive motor, linear drive motor's both ends are equipped with the output shaft respectively, the output shaft forms the drive end, the output shaft pass through the support frame with first speaker links to each other.

In some embodiments of the present invention, the speaker further includes a supporting seat, the supporting seat is disposed on the box, the supporting seat is disposed on the supporting seat in a sliding connection manner, and the linear driving motor is disposed on the supporting seat or the box.

In some embodiments of the invention, the at least two first speakers are mid-range speakers or tweeters.

In some embodiments of the present invention, the speaker box further comprises at least one second speaker, and the at least one second speaker is disposed outside the length range of the at least two first speakers along the first direction.

In some embodiments of the present invention, the first speaker is a high pitch speaker, and the second speaker is a mid-pitch speaker.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated with like reference numerals throughout the drawings. Wherein:

fig. 1 is a schematic structural view of the relative position between a sound wave beam and a listener of a conventional loudspeaker device;

FIG. 2 is an isometric view of an acoustic enclosure according to an embodiment of the present application;

fig. 3 is a schematic front structure view of a sound box according to an embodiment of the present application;

fig. 4 is a schematic back structure view of a sound box according to an embodiment of the present application;

fig. 5 is a schematic view of a relative position structure between a sound wave beam and a listener of a loudspeaker box according to an embodiment of the present application.

The reference numerals in the drawings denote the following:

1': existing loudspeaker equipment;

1: a sound box;

10: a box body and 11: a chute;

20: a first speaker;

30: linear drive motor, 31: an output shaft;

40: a support frame;

50: a supporting seat;

60: a second speaker.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. This spatially relative term is intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "in 8230 \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In order to enhance the directivity of sound and improve the listening effect of a listener, the present application proposes a sound box, which adjusts the beam width of sound waves radiated from the sound box by adjusting the distance between speakers located at two ends.

With reference to fig. 2 to 4, the sound box 1 of the present invention includes a box 10 and at least two first speakers 20, the at least two first speakers 20 are disposed on the box 10, the at least two first speakers 20 are disposed at intervals along a first direction, and the first speakers 20 at least one end of the first direction can move along the first direction, wherein the first direction intersects with a horizontal direction.

Specifically, the number of the at least two first speakers 20 may be two, but is not limited to two, and may also be more. For ease of description, the present application is illustrated as including only two first speakers 20. The two first speakers 20 are spaced apart from each other along the first direction, that is, the two first speakers 20 are not overlapped with each other along a direction perpendicular to the first direction, so as to ensure that a beam can be formed between the two first speakers 20 along the first direction. And at least one first loudspeaker 20 can move along the first direction, thus change and locate the interval size between the first loudspeaker 20 of both ends along the first direction, and then regulate the beam width formed by two first loudspeakers 20, in order to regulate the beam to reach the interval from baffle of the sound baffle and loudspeaker and is greater than the listener to the interval of the loudspeaker, reduce the interference of reflected wave, thus guarantee the listener can receive the good listening effect after the interval size with loudspeaker 1 changes.

As one of the embodiments, when the listener moves away from the sound box, the beam width of the sound box 1 needs to be adjusted to narrow, so that the reflection points of the beams reaching the sound reflection boards, such as the floor and the ceiling, fall behind the listener (i.e. the side away from the sound box), and the uniformity of the listening effect is ensured, in this case, the distance between the first speakers 20 arranged at the two ends along the first direction needs to be increased; when the listener moves in a direction close to the cabinet, it is necessary to adjust the beam width widening of the cabinet 1 so that the reflection points of the beams reaching the sound reflection boards such as the floor and the ceiling fall behind the listener to ensure the uniformity of the listening effect, and at this time, it is necessary to reduce the distance between the first speakers 20 provided at both ends in the first direction.

When the number of the first speakers 20 is three or more, at least one first speaker 20 at an end in the first direction can be moved in the first direction, thereby changing a size of a space between the first speakers 20 provided at both ends in the first direction.

In some embodiments of the present invention, the first direction is a vertical direction, thereby facilitating the setting of the first speaker 20 and the determination of the pitch size of the first speakers 20 at both ends along the vertical direction.

As shown in fig. 2 to 5, the two first speakers 20 form a speaker array, and assuming that the array elements are point sound sources and have no directivity, the directivity function at the receiving point is as follows:

where θ is an angle between the receiving point and the speaker array, i.e., a beam width, k is a wave number, N is the number of array elements, and d is an array element pitch, i.e., a pitch size between the first speakers 20 disposed at both ends. For example, the sound box 1 of the present application is installed in a room, the height of the room is 2.7m, the height of the center position of the speaker array is 1.35m, the position of the human ear is the same as the center position of the speaker array, the listening distance L3 is 2m, and the sound source frequency is 2kHz. In this case, the required beam width is about 68 °, and the distance between the two first speakers 20 is about 12cm, so that the reflected waves of the speaker array can be ensured to fall behind the listener, and the listening quality of the listener can be ensured. When the listening distance moves to the far end and the distance L3 from the sound box 1 is 3m, due to the increase of the listening distance, the distance between the first speakers 20 at the two ends needs to be increased, so as to reduce the beam width, the corresponding beam width is 48 °, at this time, the distance between the two first speakers 20 needs to be increased to about 16cm, so as to ensure that the reflected waves of the speaker array fall behind the listener, and ensure the listening quality of the listener.

Referring to fig. 2 to 4, in some embodiments of the present invention, the first speakers 20 disposed at both ends along the first direction are respectively movable along the first direction.

Specifically, both the first speakers 20 may be moved in a first direction, close to or apart from each other, thereby maximally adjusting the beam width. Wherein, the front of the cabinet 10 facing the listener is provided with a sliding slot 11, and the sound outlet end of the first speaker 20 is inserted into the sliding slot 11 and communicated with the outside of the cabinet 10, so as to output sound waves and move along the sliding slot 11.

When the number of the first speakers 20 is three or more, the first speakers 20 at both end portions in the first direction are respectively movable in the first direction, thereby changing the size of the interval between the first speakers 20 provided at both end portions in the first direction.

Referring to fig. 2 to 4, in some embodiments of the present invention, the sound box 1 further includes a driving unit, the driving unit is provided with at least one driving end, and the driving end is connected to the first speaker 20 located at the end along the first direction and used for driving the first speaker 20 to move. The driving end of the driving unit controls the first loudspeaker 20 to move along the first direction, so that the adjustment of the space size between the first loudspeakers 20 is achieved, and the automation control degree of the sound box 1 is further improved. In some embodiments of the present application, the size of the space between the two first speakers 20 can also be adjusted by manual adjustment.

Referring to fig. 2 to 4, in some embodiments of the present invention, the driving unit includes two driving ends, and the two driving ends are respectively connected to the first speaker 20 disposed at two ends along the first direction. The two driving ends respectively control the two first speakers 20 to move along the first direction, so that the two first speakers 20 are close to or far away from each other, and the beam width can be conveniently adjusted.

Referring to fig. 2 to 4, in some embodiments of the present invention, the driving unit is a linear driving motor 30, two ends of the linear driving motor 30 are respectively provided with an output shaft 31, the output shaft 31 forms a driving end, and the output shaft 31 is connected to the first speaker 20 through a supporting frame 40.

Specifically, the first speaker 20 is fixed on the support frame 40, and the support frame 40 is connected to the output shaft 31 of the linear driving motor 30, so that the support frame 40 is driven by the linear driving motor 30 to move, and the first speaker 20 is driven to move along the first direction.

Referring to fig. 2 to 4, in some embodiments of the present invention, the sound box 1 further includes a supporting seat 50, the supporting seat 50 is disposed on the box 10, the supporting frame 40 is disposed on the supporting seat 50 in a sliding connection manner, and the linear driving motor 30 is disposed on the supporting seat 50 or the box 10.

Specifically, the support base 50 is fixed inside the cabinet 10, and the linear driving motor 30 is fixed on the support base 50 and is disposed at a middle position of the support base 50 in a vertical direction. Supporting seat 50 includes the bottom plate and locates the curb plate of bottom plate both sides along vertical direction, and linear drive motor 30 is fixed in on the bottom plate, and the relative medial surface that sets up of both sides board is equipped with the spout, the both sides of support frame 40 be equipped with spout assorted slide rail, thereby the slide rail is pegged graft to the spout in realize the sliding connection between support frame 40 and supporting seat 50, guarantees that support frame 40 and first speaker 20 move along vertical direction under linear drive motor 30's effect.

Referring again to fig. 2-4, in some embodiments of the present invention, the at least two first speakers 20 are any one of a midrange speaker and a tweeter.

In particular, the two first speakers 20 may be both tweeters, or both midrange speakers.

Referring to fig. 2 to 4, in some embodiments of the present invention, the sound box 1 further includes at least one second speaker 60, and the at least one second speaker 60 is disposed outside the length range of the two first speakers 20 along the first direction. I.e. the second loudspeaker 60 is arranged outside the range of the first loudspeaker 20 at both ends in the first direction.

By arranging the second speakers 60 outside the length ranges of the two first speakers 20, the sound production range of the sound box 1 can be further improved, and the sound effect quality of the sound box 1 can be improved. Specifically, one second speaker 60 may be disposed at the top of the two first speakers 20 along the vertical direction, and one second speaker 60 may be disposed at the bottom of the two first speakers 20 along the vertical direction, so that the sound production range of the sound box 1 is increased by the second speakers 60 at both ends. Wherein the first speaker 20 may be a tweeter and the second speaker 60 may be a midrange speaker.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

In one embodiment of the present application, the sound box 1 includes a cabinet 10 and two first speakers 20 provided on the cabinet 10. The two first speakers 20 are spaced apart in a first vertical direction, and the two first speakers 20 are movable in the first direction, respectively. The sound box 1 further comprises a linear driving motor 30, two ends of the linear driving motor 30 in the vertical direction are respectively provided with an output shaft 31, and the two output shafts 31 are respectively connected with the two first speakers 20 through a supporting member 40, so as to drive the first speakers 20 to move in the vertical direction. The sound box further comprises a support seat 50, the support seat 50 is arranged inside the box body 10, the support frame 40 is arranged on the support seat 50 in a sliding connection mode, and the linear driving motor 30 is arranged on the support seat 50. The loudspeaker box 1 further comprises two second loudspeakers 60, wherein the two second loudspeakers 60 are respectively arranged at the top and the bottom of the loudspeaker array formed by the two first loudspeakers 20 along the vertical direction, the first loudspeakers 20 are high pitch loudspeakers, and the second loudspeakers 60 are middle pitch loudspeakers.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An acoustic enclosure, comprising:

a box body;

the loudspeaker box comprises at least two first loudspeakers, wherein the at least two first loudspeakers are arranged on the box body, the at least two first loudspeakers are arranged at intervals along a first direction, the first loudspeakers at least one end of the first direction can move along the first direction, and the first direction is intersected with the horizontal direction.

2. An acoustic enclosure according to claim 1, wherein the first direction is a vertical direction.

3. An acoustic enclosure according to claim 1 or 2, wherein the first loudspeakers provided at the two ends of the enclosure in the first direction are each movable in the first direction.

4. An acoustic enclosure according to claim 1 or 2, further comprising a drive unit, wherein the drive unit is provided with at least one drive end, and the drive end is connected to the first speaker provided at an end portion along the first direction and is configured to drive the first speaker to move.

5. The sound box according to claim 4, wherein the driving unit comprises two driving terminals, and the two driving terminals are respectively connected to the first speakers disposed at two ends along the first direction.

6. The sound box according to claim 5, wherein the driving unit is a linear driving motor, output shafts are respectively disposed at two ends of the linear driving motor, the output shafts form the driving end, and the output shafts are connected to the first speaker through a supporting frame.

7. The sound box of claim 6, further comprising a supporting base, wherein the supporting base is disposed on the box, the supporting frame is slidably disposed on the supporting base, and the linear driving motor is disposed on the supporting base or the box.

8. An acoustic enclosure according to claim 1 or claim 2, wherein the at least two first loudspeakers are midrange loudspeakers or tweeters.

9. An acoustic enclosure according to claim 1 or 2, further comprising at least one second loudspeaker, the at least one second loudspeaker being located outside the length of the at least two first loudspeakers in the first direction.

10. An acoustic enclosure according to claim 9, wherein the first loudspeaker is a tweeter and the second loudspeaker is a midrange loudspeaker.

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