JPH0617421Y2 - Speaker system for car stereo - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is a car stereo speaker system in which the reproduced sound range is expanded to ultra-low frequencies.

<Prior Art> In a conventional car stereo device, a high-frequency receiver section and a low-frequency amplifier section are usually attached to the dashboard or in the vicinity thereof, and a speaker system is usually attached to the rear seat rear left and right ends. However, when a so-called three-dimensional stereo system in which only the low-range speaker is placed in the rear center of the rear seat, especially when aiming for 4-channel playback sound, it can be installed by installing it on the lower left and right ends of the windshield or on the ceiling. Was uplifted. However, in conventional automobiles (especially passenger cars), especially when traveling on gravel roads, the wheel tires pick up irregularities on the road surface, and the heavy low-pitched noise that travels through the wheels and bearings accumulates in the vehicle interior as noise. , The playback sound quality of the car stereo device was hindered. Also, the car stereo device is not disregarded for the reproduction of the low range, but rather the low range is tabooed and it tried to obtain a good reproduction in the middle and high range as much as possible, so sufficient reproduction sound quality Couldn't get

<Problems to be solved by the invention> However, recently, the road conditions have improved and the gravel-covered road surface has almost disappeared, while a high-quality paved road surface has become available.
With improvements made to the wheel tires of automobiles, the low-pitched rumbling noise is no longer heard in the passenger compartment. In this way, the low range noise in the passenger compartment has been improved to be low,
Since it's becoming quieter, the mid-to-high range playback range is no longer sufficient.

Therefore, the purpose of the present invention is to supplement the unsatisfactory level in the reproduced sound range, particularly in the ultra-low range, to give the listener a soft sense of presence.

<Means for Solving the Problems> The structure of the present invention for achieving the above object will be described with reference to FIG. 1 and FIG. 2 corresponding to the embodiments. The present invention has an inclined rear plate (9). The sound emitting duct (11) is placed toward the rear window glass (10) and the bottom plate
The above-mentioned opening of the speaker box (2) in which the speaker for super-low-pitched sound (1) is attached to the speaker sound-emitting opening (4) formed in (3).
A speaker system for a car stereo in which (4) is attached so as to be opposed to an opening (6) formed in a partition plate (5).

<Operation> As described above, the present invention attaches the ultra low-pitched speaker (1) downward to the opening (4) formed in the bottom plate (3) of the speaker box (2), and further installs the partition plate (5). ) Speaker box (2)
Since the sound emission hole (6) is formed at a position facing the opening (4) of the bottom plate (3) of the car, the sound generated from the front surface of the diaphragm of the super bass speaker (1) is generated in the rear trunk room (7) of the automobile. ), It does not enter the vehicle interior (8) and deteriorates the sound quality in the vehicle interior. Since a duct (11) that acts as a high-cut, low-pass filter is attached to the surface of the rear wall plate (9) of the speaker box (2) facing the rear window glass (10), the super bass speaker (1) The sound generated from the rear surface of the diaphragm can be emitted into the vehicle compartment (8).

<Embodiment> An embodiment of the present invention will be described with reference to FIGS. 1 and 2 below. On the partition plate (5) for separating the passenger compartment (8) from the rear seat (12) and the trunk room (7). A speaker box (2) having a mid-high range speaker (13) attached to the front is arranged at an appropriate distance from the rear window glass (10). Then, the super bass speaker (1) is attached downward to the opening (4) formed in the bottom plate (3) of the speaker box (2), and the rear wall plate (9) is inclined rearward. ) Is provided with a duct (11) that acts as a high-cut low-pass filter.
Such a speaker box (2) has a sound emission opening (6) formed in a partition plate (5) and a bottom plate (3) of the speaker box (2).
The opening (4) formed in the
(9), through the rear window glass (10) at regular intervals,
The duct (11) is mounted so that it faces the rear windshield (10).

In that case, of the sound generated from the rear surface of the diaphragm of the super bass speaker (1), only the required super bass range is emitted from the duct (11) and reflected by hitting the rear window glass (10). Rear window glass (10) and speaker box
(2) The rear wall plate and the rear wall plate form a horn, so that super bass can be efficiently radiated into the vehicle compartment (8) with less noise.
In this way, since the ultra bass has a long wavelength, even in a stereo type speaker system, even if the ultra bass speaker (1) is provided in only one of them, the location of the ultra bass source cannot be specified, and it is sufficient. The purpose of the three-dimensional effect can be reached. Similarly, as a bass speaker of the ternary system, even if one speaker is installed in the center of the partition plate (5) with the other speaker separated, the effect can be sufficiently exhibited.

In this way, in the vehicle compartment (8), in the mid-high range, the sound directly enters the listener's ear from the mid-high range speaker (13), and after super bass, is reflected and expanded by the rear windshield (10), Since it spreads softly in the vehicle interior (8), you can enjoy excellent playback sound quality with a clear and natural stereo feeling.In this case, in the speaker box (2) Of course, it is acoustically cut off from the bass speaker (1), and the mid-to-high range speaker (13) also reproduces the bass range between the mid-high range and the super-low range. Alternatively, the speaker for super bass (1) may receive it, or both speakers (13) and (1) may share it.

<Other Embodiments> As shown in FIG. 1 above, the super bass speaker (1) is arranged downward in the speaker box (2), but as another embodiment, as shown in FIG. A speaker for super bass (1)
Is attached upward to the opening (4) of the bottom plate (3) of the speaker box (2), the internal speaker of the speaker box (2) can be made small and compact.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to only the structures of these embodiments.
The present invention can be appropriately modified and carried out within a range that achieves the object of the present invention and has the following effects.

<Effect of device> Since the device of the present invention has the above-mentioned structure, it is a space for super bass (1)
The sound output to the trunk room (7) is
Since it is not consumed in the vehicle (7) and enters the vehicle compartment (8), the reproduced sound quality in the vehicle compartment (8) is not impaired.

Also, the duct (11) of the rear wall plate (9) of the speaker box (2)
By using the filter effect, it is possible to radiate the ultra low tone with less noise to the vehicle interior by the reflected sound from the rear window glass (10) and the horn effect, and to reproduce the car stereo reproduction that contains unprecedented ultra low tone. You can enjoy the sound quality.

Therefore, the existing low-frequency amplifier can be used as it is, which is advantageous in terms of cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of the present invention, FIG. 2 is an external view, and FIG. 3 is a sectional view showing another embodiment of the present invention. In the figure, (1) is a super bass speaker, (2) is a speaker box,
(3) is the bottom plate, (4) is the bottom plate opening, (5) is the partition plate, (6) is the partition plate opening, (9) is the rear plate, (10) is the rear window glass, (11) Is a duct.

Claims (1)

[Scope of utility model registration request] Claims: 1. A sound emission duct (11) arranged on an inclined rear plate (9) is arranged toward a rear window glass (10), and a speaker sound emission is formed on a bottom plate (3). Speaker box (2) with the ultra-low-pitched speaker (1) attached to the opening (4)
The car stereo speaker system in which the opening (4) is attached so as to face the opening (6) formed in the partition plate (5).