TWI549521B - Sound playback device - Google Patents

Description

Audio player

The present invention relates to a speaker defined by International Classification No. H04R, and more particularly to a playback device in which a plurality of tweeters are provided on the same casing to increase the range of directivity.

In general, the sound waves emitted by the tweeters have obvious directivity, and the ability of the human ear to distinguish the direction of the sound source is also dominated by high frequency bands. Therefore, in designing the sound, in order to reduce the high-frequency speaker when the sound wave is emitted, the sound wave with high directivity is likely to cause uneven propagation in the space, and generally the high-frequency speaker is mounted on different boxes. The uniformity of sound wave propagation is improved by the arrangement and distribution of the boxes in space to solve the problem of high frequency directivity. However, currently there is a lack of a playback device capable of accommodating both high-frequency speakers and low-frequency speakers at the same time, and at the same time improving the problem of high-frequency directivity and mutual interference between speakers.

In view of this, the main object of the present invention is to provide a playback device in which high-frequency speakers in different directions are disposed on the same box, thereby improving the problem of high-frequency directivity and achieving a full-range sound effect surround effect.

Another object of the present invention is to provide a playback device on the same cabinet A tweeter and a low frequency speaker are provided and do not affect each other.

In order to achieve the above object, the present invention provides a sound effect playback apparatus comprising a case, a low frequency speaker and at least two high frequency speakers. The box body has a bottom wall, a side wall and a support portion. The side wall ring is disposed above the bottom wall, and the support portion is disposed below the bottom wall. The bottom wall and the support portion together form a cavity, and one side of the support portion is provided with at least one bass outlet that communicates with the cavity. The woofer is placed on the bottom wall and its sound direction is downward. The at least two high-frequency loudspeakers are disposed on the side wall of the casing and have different sounding directions to form a surround sound effect.

Thereby, the tweeters in different directions are arranged in the box, which can effectively increase the uniformity of the playing device during sound wave propagation, so that the sound effect playing device is in a full-range surround state and the high and low-frequency speakers are not mutually connected to each other. interference.

1‧‧‧Player

10‧‧‧ cabinet

11‧‧‧ bottom wall

12‧‧‧ side wall

121‧‧‧ round hole

13‧‧‧Support

131‧‧‧ bass outlet

14‧‧‧ top wall

141‧‧‧opening

15‧‧‧ sound chamber

16‧‧‧ cavity

20‧‧‧Tem loudspeaker

30‧‧‧Low speaker

40‧‧‧ Cover

Fig. 1 is an exploded perspective view showing the casing of the first embodiment of the present invention.

Fig. 2 is a perspective view showing a playback apparatus according to a first embodiment of the present invention.

Figure 3 is a perspective view of a playback device in accordance with a second embodiment of the present invention.

In order to better understand the features of the present invention, the sound effect playback apparatus of the present invention provides two embodiments and is described below in conjunction with the drawings. Please refer to Figures 1 to 3. The same components are used for the same components in each embodiment to facilitate identification.

The main components of the full-range surround sound playback device 1 of the present invention comprise a casing 10, four high-frequency loudspeakers 20 and a low-frequency loudspeaker 30. The structure of each component and the relationship between them are as follows: Please refer to Figure 1 first. The casing 10 can be a hollow quadrangular pyramid having a bottom wall 11, a side wall 12, a support portion 13, and a top wall 14. The side wall 12 is disposed above the bottom wall 11 and the bottom wall 11 and the side wall 12 define a sound chamber 15 to enhance the resonance effect of the sound waves emitted by the playback device 1. The support portion 13 is disposed under the bottom wall 11, the bottom wall 11 and the support portion 13 together form a cavity 16, and one side of the support portion 13 is equiangularly opened in different directions with four bass outlets 131 to form The effect of surround sound. The top wall 14 is disposed above the bottom wall 11 and the top wall 14 is connected to the side wall 12 and defines an opening 141. The opening 141 is configured to insert a sound guiding tube (not shown). Increase the low frequency.

Referring to FIGS. 1 to 2, four tweeters 20 are respectively embedded and fixed to the four side walls 12 in a dispensing manner, and the tweeters 20 are equiangularly spaced around the casing 10. The playback device 1 can uniformly transmit high-frequency sound waves in various directions to form a 360-degree high-frequency surround sound effect. In addition, a circular hole 121 is further provided in one of the side walls 12 for the passage of a wire (not shown) required for the playback device 1, and the circular hole 121 is sealed after the wire is assembled.

The low frequency speaker 30 is locked to the bottom wall 11 of the cabinet 10, and the sound emitting direction of the low frequency speaker 30 is downward, so that the low frequency speaker 30 can propagate sound waves toward the bass outlets 131.

In use, since the tweeter 20 is provided in different directions of the side wall 12 of the playback apparatus 1, the uniformity of the playback apparatus 1 during sound wave propagation can be effectively increased. The high frequency speaker 20 requires a smaller resonant cavity and a relatively smaller volume, so that when the tweeter 20 and the low frequency speaker 30 are also disposed in the case 10, the volume required for the case 10 is not increased too much. The low frequency speaker 30 is bulky and has no problem of directivity. The provision of the low frequency speaker 30 on the bottom wall 11 makes the casing 10 relatively stable in structure and enhances the effect of acoustic resonance by the sound chamber 15.

Since the low frequency speaker 30 is also capable of emitting high frequency sound waves, in order to suppress the mutual influence between the high and low frequency speakers 20, 30, the present invention further provides a second embodiment, please refer to FIG. Compared with the foregoing first embodiment, the main difference of the second embodiment is that a cover plate 40 is respectively disposed on the four bass outlets 131 of the support portion 13, and the cover plate 40 is connected to the support portion 13 and shields at least a portion. The bass outlet 131 reduces the size of each of the bass outlets 131 to be partially closed, thereby suppressing the high-pitched components of the sound waves emitted by the low-frequency speaker 30.

It should be noted that although the casing 10 of the first embodiment is a hollow quadrangular pyramid, the casing 10 may be changed to other shapes, such as a hollow square column type, as long as it can be in different directions of the casing 10. Any of the tweeters 20 can be provided. The number of sets of the tweeter 20 should not be limited to four in the above embodiment, and it may be set to two, three or more instead, as long as at least two tweeters 20 have different sounds. The direction allows the playback device 1 to form a full-range surround sound effect.

Finally, it must be noted that the constituent elements disclosed in the foregoing embodiments of the present invention are merely illustrative and are not intended to limit the scope of the present invention, and other structural changes that are easily conceivable, or alternatives to other equivalent elements. Changes should also be covered by the scope of the patent application for this case.

1‧‧‧Player

11‧‧‧ bottom wall

12‧‧‧ side wall

13‧‧‧Support

131‧‧‧ bass outlet

16‧‧‧ cavity

20‧‧‧Tem loudspeaker

30‧‧‧Low speaker

Claims (6)

A sound effect playing device, comprising: a box body having a bottom wall, a side wall ring is disposed above the bottom wall, and a supporting portion is disposed under the bottom wall, the bottom wall and the supporting portion form a cavity together And at least one bass outlet connected to the cavity is provided on one side of the support portion; a low frequency speaker is disposed on the bottom wall and the sound emitting direction is downward; at least two high frequency speakers are disposed on the side wall of the cabinet And the at least two high frequency speakers have different sounding directions, so that the high frequency is in a surrounding state; wherein the at least one bass outlet is partially closed. The sound effect playback device of claim 1, wherein the housing has a top wall opposite to the bottom wall for inserting a sound guide tube. The sound effect playing device of claim 1, wherein the side wall and the bottom wall define a sound chamber, and the high frequency speakers are disposed at equal angular intervals on the side wall. The sound effect playback device of any of claims 1 to 3, wherein the housing is a hollow quadrangular pyramid. The sound effect playback device of claim 4, wherein the number of the at least two high frequency speakers is four. The sound effect playing device of claim 1 or 2, further comprising a cover plate connecting the case and partially shielding the bass outlet.