CN210183515U

CN210183515U - Device for adjusting sound wave projection direction

Info

Publication number: CN210183515U
Application number: CN201921555538.3U
Authority: CN
Inventors: Xiongchao Yang; 杨雄超
Original assignee: Shenzhen True Technology Service Co Ltd
Current assignee: Shenzhen True Technology Service Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-03-24
Anticipated expiration: 2029-09-19

Abstract

The utility model provides a device of direction is thrown to adjustment sound wave sets up on the audio amplifier, the device includes the refraction board, with refraction board swivelling joint's connecting plate, the refraction board passes through the damping pivot with the connecting plate and is connected, the connecting plate is fixed and is used for connecting the refraction board on the stereo set. The utility model has the advantages that: the angle of the refraction plate is adjusted according to the listening position of a user, so that richer medium-high frequency sound waves are obtained, and the definition of the whole sound is improved.

Description

Device for adjusting sound wave projection direction

Technical Field

The utility model relates to a stereo set accessory field, in particular to device of projection direction of high frequency sound wave in the adjustment.

Background

The loudspeaker of the sound box in the current market is arranged on any side, wherein the projection direction of the high-frequency sound wave is relatively fixed and is not adjustable. Due to the appearance and the structure, the installation position of the loudspeaker influences the projection direction of the medium-high frequency sound wave, so that a user cannot obtain the optimal listening experience. The invention solves the problem very conveniently, so that the medium-high frequency sound wave signal which determines the sound definition is not limited by the installation position of the loudspeaker any more.

Disclosure of Invention

In order to achieve the object, the utility model provides an adjust device that sound wave throws direction after loudspeaker installation face increases the sound wave refraction device, can adjust the direction of throwing of medium-high frequency sound wave to make loudspeaker installation face on the audio amplifier select more freely, be realized through following technical scheme.

The utility model provides an adjustment sound wave throws device of direction, sets up on the audio amplifier, the device includes the refraction board, with refraction board swivelling joint's connecting plate, the refraction board passes through the damping pivot with the connecting plate and is connected, the connecting plate is fixed and is used for connecting the refraction board on the stereo set.

Furthermore, the device also comprises an angle device which is arranged on the connecting plate or the sound box so that the center of the damping rotating shaft corresponds to the center of the angle device.

Furthermore, the angle between the refraction plate and the plane where the sound box is located is 20-90 degrees.

Furthermore, the connecting plate is fixed on one surface or the side surface of the sound box with the loudspeaker.

Furthermore, the connecting plate can be replaced by a sound box panel, and the sound box panel and the refraction plate are connected through a damping rotating shaft.

The utility model has the advantages that: the adjustable medium-high frequency sound wave refraction plate is arranged on the surface, close to the loudspeaker, of the loudspeaker box, the angle of the refraction plate is adjusted according to the listening position of a user, richer medium-high frequency sound waves are obtained, and the definition of the whole sound is improved.

Drawings

Fig. 1 is a schematic view of the structure of the device of the present invention.

Fig. 2 is a schematic structural view of the device of the present invention installed in a sound box.

Fig. 3 is a schematic view of the angle device of the present invention.

Fig. 4 is a schematic diagram of the audio tester of the present invention.

Fig. 5 is a graph of an audio tester in a normal state of a sound box in the prior art.

Fig. 6 is a graph of the audio tester when the angle between the refraction plate and the sound box is 20 °.

Fig. 7 is a graph of the audio tester when the angle between the refraction plate and the sound box is 45 °.

Fig. 8 is a graph of the audio tester when the angle between the refraction plate and the sound box is 70 degrees.

Fig. 9 is a graph of the audio tester when the angle between the refraction plate and the sound box is 90 °.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1-3, a device 10 for adjusting sound wave projection direction is disposed on a sound box 20, the device 10 includes a refraction plate 11 and a connection plate 12 rotatably connected to the refraction plate, the refraction plate is connected to the connection plate through a damping rotation shaft 13, and the connection plate is fixed on the sound box and used for connecting the refraction plate. In the embodiment of the present invention, the device is directly connected to the speaker panel through the damping shaft 13.

The device 10 still includes angle ware 30, angle ware 30 is an optional accessory, after the installation, paste the angle ware on the audio amplifier through double faced adhesive tape, the angle ware divide into 2 parts, the first part is used for measuring the angle of refraction board, including centre of a circle 32, scale district 33 and observation window 34, the second part is pasting portion 31, a side for pasting the portion of pasting through double faced adhesive tape or other sticky at the audio amplifier or connecting plate 12 with the angle ware, when pasting, the centre of a circle that will notice damping pivot 13 corresponds with the centre of a circle 32 of angle ware, the angle ware sets up on connecting plate or refraction board, use the junction of connecting plate and refraction board to set up the angle ware as the centre of a circle. During the use, through the observation window, the observation window is the fretwork, looks over the sideline that refracts the board from the observation window and is in the position of scale zone 33 and the concrete angle that corresponds. The user adjusts the refraction plate to a proper angle according to the requirement.

After the device is installed, the angle between the refraction plate 11 and the plane where the sound box 20 is located is 20-90 degrees. The effect is best in the angle range, the sound effect of each position is slightly different, and the angle of the refraction plate can be adjusted according to the preference of a user. The connecting plate is fixed on one surface or side surface of the sound box with the loudspeaker, the fixing plate can also be one panel of the sound box, and is connected with the diffusion plate 11 through the damping rotating shaft, so that the diffusion plate partially shields the loudspeaker 21.

When the user does not use the loudspeaker box, the refraction plate 11 can completely cover the loudspeaker box, the angle between the refraction plate 11 and the plane where the loudspeaker box 20 is located is close to 0 degree, and the loudspeaker box are protected to a certain extent.

As shown in fig. 4-9, are graphs of different angle audio testers. In the chart, the same sound box is used, and flatness curve changes caused by different angles of the refraction plate are used. In fig. 5-9, curve No. 1 (purple-red thin line) is a frequency curve with the horn sounding upward and no refraction plate; curve No. 2 (green thin line) in the figure is a frequency curve at a 20-degree elevation angle of the refraction plate; in the figure, the curve No. 3 (the thick yellow-green line) is a frequency curve of the refraction plate at an elevation angle of 30 degrees; in the figure, curve No. 4 (bold earth-red line) is a frequency curve of the refraction plate at an elevation angle of 45 degrees; the line No. 5 (blue bold line) in the figure is a frequency curve of the refraction plate at an elevation angle of 90 degrees; line 6 (grass green thin line) in the figure is a frequency curve of the refraction plate at an elevation angle of 60 degrees; in the figure, line 7 (emerald thin line) is a frequency curve of the refraction plate at an elevation angle of 70 degrees.

As shown in fig. 4, the test apparatus: LMS professional audio tester. And (3) testing environment: in the indoor space under the conventional acoustic condition, the test equipment is directly opposite to the sound box, so that the sound waves refracted by the refraction plate are transmitted to the test equipment in a concentrated manner. Through the integral analysis of all frequency curves, the difference degree of each curve is not large at the middle and low frequency parts under 1KHz signals, the difference is smaller towards the lower end frequency (the left direction of the transverse coordinate), and the difference is larger towards the higher end frequency (the right direction of the transverse coordinate), so that the loudness improvement of the medium and high end frequency (the frequency above 1 KHz) of the device of the refraction plate is obvious, and the high frequency improvement characteristics presented by different refraction angles are different. It can be seen from the figure that in the absence of the refractive plate means (curve No. 1), the signal decays significantly from 5kHz up to the loudness of the high frequency part of 20kHz, with the average loudness decaying by more than 5dB before 5 kHz. And the structure of having installed the refraction board additional, from reflection elevation angle 20 degrees to 90 degrees, 5kHz to the high-end frequency range of 20kHz, the loudness all has obvious promotion, and especially 20 degrees to 90 degrees elevation angle range are obvious.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an adjustment sound wave throws device of direction, sets up on the audio amplifier, its characterized in that, the device includes the refraction board, with refraction board swivelling joint's connecting plate, the refraction board passes through the damping pivot with the connecting plate and is connected, the connecting plate is fixed and is used for connecting the refraction board on the stereo set.

2. The device of claim 1, further comprising an angle device, wherein the angle device is arranged on the connecting plate or the sound box, so that the center of the damping rotating shaft corresponds to the center of the angle device.

3. The apparatus of claim 1, wherein the angle between the refraction plate and the plane of the enclosure is 20 ° to 90 °.

4. The apparatus of claim 1, wherein the connecting plate is fixed to a surface or side of the enclosure having the horn.

5. The apparatus of claim 1, wherein the connection plate is replaceable as a sound box panel, and the sound box panel and the refraction plate are connected by a damping rotation shaft.