JP3523152B2 - Vehicle speaker system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle speaker system which uses a window glass surface of a vehicle and has excellent acoustic characteristics.

As is well known, in recent vehicles such as passenger cars, a plurality of speakers are mounted at appropriate locations in the vehicle (for example, inside the front and rear doors, rear parshell portion, A-pillar portion, etc.) and are suitable. Has a stereo effect.

However, in the vehicle, as described above, the location of the speaker is limited spatially, in terms of height, and in the direction of hearing aid, so that there is a limit to the improvement of acoustic characteristics. there were.

That is, in the case of the above-mentioned speaker installation place, it is excellent in that an appropriate vacant space (dead space) which is not so conspicuous is used, but due to the spatial limitation, most of the speakers are bare single bodies. In most cases, it is not installed with sufficient acoustic effect. In addition, since the sound source is near the passenger's feet inside the door, its height is a problem, and there is a problem that the sound source is on the occupant's occipital region in the rear parschel part, and there is too much space in the A-pillar part. There was a problem that it was small and could only support small speakers.

On the other hand, in a general indoor speaker system, for example, a closed type speaker cabinet (box) structure as shown in FIG. 11 or a bass reflex type speaker cabinet structure as shown in FIG. 12 is adopted. .

In the cabinet structure of FIG. 11, since the speaker body 10 is attached to the front side (baffle) 21 side of the sealed speaker cabinet 20, sound waves emitted from the rear side of the speaker body 10 (from the front side) A sound wave whose phase is exactly opposite to the sound wave) is effectively contained. As a result, the sound waves from the rear side are mixed with the sound waves on the front side, and the adverse effects such as canceling each other are eliminated, so that good sound quality can be obtained. Further, the airtightness of the air inside the speaker cabinet 20 is increased due to the closed structure.

Further, in the cabinet structure of FIG. 12, a duct (pipe portion) 22 and a simple port (hole) are provided on the baffle 21 side of the speaker cabinet 20 to which the speaker body 10 is attached, and the cabinet structure allows the speaker to be installed. Since sound waves from the rear side of the main body 10 are inverted and guided to the front side, abundant volume can be obtained. Especially with this structure, low frequency bass sounds
Since it is guided to the side, the reproduction range in the low sound range can be expanded.

Further, in such a cabinet structure, in order to improve the sound quality from the surface of the material used, the propagation speed of sound waves (longitudinal wave or bending wave) in the material, the resonance frequency of the material, etc. are taken into consideration. It is said that it is preferable to use a material that is as hard as possible, has a large thickness, and is heavy in weight. From such a viewpoint, Lauan plywood and particle board are often used.

Furthermore, in the case of the cabinet structure, there is a fear that the strength may be insufficient and resonance may occur.
As a higher-grade product, for example, as shown in FIG. 13, there is proposed a structure in which a cross-shaped reinforcing member 23 and a splint-like reinforcing member 24 are incorporated in the front and rear or side surfaces of the cabinet 20. is there.

[0010]

However, in the above-mentioned conventional vehicle speaker system, since the installation location is limited as described above, even if the optimum condition for the speaker system is known, it is very difficult to solve the problem. It is impossible to obtain an acoustic space in such an optimal shape, and some compromise is required, but also in terms of materials, various sound absorbing materials (sound absorbing materials) are used for the interior of the door and the rear par shell. Materials) and interior materials, which may cause unnecessary sound absorption and sound leakage, and may cause unnecessary metal sound reflection in the metal frame part such as the A-pillar, which causes problems in acoustic characteristics. there were. Further, in a vehicle, various vehicle parts are often arranged in the vicinity of the embedded speaker, so that there is a problem that resonance occurs with them and the sound quality is deteriorated.

The present invention has been made in view of such a conventional situation, and by utilizing a window glass surface of a vehicle,
An object of the present invention is to provide a vehicle speaker system having excellent acoustic characteristics, which can ensure a sufficiently large acoustic space and can also match the height and direction with respect to an occupant.

[0012]

According to a first aspect of the present invention, a flat plate-shaped speaker holder made of a hard material with a speaker main body mounted inside a window glass surface of a vehicle is appropriately spaced. The speaker system for a vehicle is characterized in that an acoustic space is formed between the window glass surface and the speaker holder.

The invention according to a second aspect of the present invention is characterized in that the flat speaker holder is made of a transparent or translucent hard resin and is attached to a window recessed portion of a window glass surface in a vehicle. The vehicle speaker system according to claim 1.

[0014] The invention of claim 3, wherein according to the present invention, the inside of the window glass surface of the vehicle, the rear-side mounting box-shaped speaker holder is an open type consisting loaded hard material of the speaker body, the window Glass surface and the spin
A vehicle speaker system, characterized in that an acoustic space is formed in a box portion of a car holder .

According to a fourth aspect of the present invention, the box-shaped speaker holder is made of a transparent or semi-transparent hard resin, and is attached to a part or all of the window recessed portion of the window glass surface in the vehicle. Claim 3 characterized by the above.
It is in the vehicle speaker system described .

The invention according to a fifth aspect of the present invention is characterized in that the box-shaped speaker holder is made of a transparent or semi-transparent hard resin and is attached to a window frame portion of a window glass surface in a vehicle. The vehicle speaker system according to claim 3 .

[0017]

1 to 3 show one embodiment of a vehicle speaker system according to the present invention.
Reference numeral 10 is a speaker body, and 30 is a flat speaker holder to which the speaker body 10 is attached.

The flat speaker holder 30 is made of a hard material, preferably a transparent or translucent hard resin such as an acrylic resin or a composite resin of acrylic resin and polycarbonate. The shape of the speaker holder 30 is a vehicle 100 such as a small wagon. The glass window 200 near the rear has a substantially rectangular shape corresponding to the window recessed portion 110 on the inside of the vehicle, and the speaker body 10 is mounted on one side (rear surface) side of the window window 200. A hole 31 made of a through hole is provided (upper position in the drawing). As shown by the chain line in FIG. 1, a duct (tube portion) 32 can be provided in the hole 31 portion if necessary, or a simple flat plate without the hole 31 can be used.

The speaker holder 3 thus constructed
0 is attached to the window recessed portion 110 inside the vehicle inside the window glass surface 210 of the glass window 200 forming a small window toward the rear of the vehicle as described above. Since this attachment is formed in advance in conformity with the shape of the window recessed portion 110, it is fitted from the inside of the vehicle, and the fixture 3 such as a screw is attached.
It can be easily done by fixing with 3. Also, this mounting state can be easily confirmed from the outside when the holder material is made of transparent or translucent resin. Furthermore, when a transparent or semi-transparent resin material is used, the window function is partially lost by the speaker main body 10, but it does not cause a great adverse effect. It should be noted that this attachment may be performed afterwards on a ready-made vehicle, or may be performed at the manufacturing stage of a factory. Of course, a predetermined wiring is provided on the speaker body 10 portion.

By mounting the speaker holder 30, the window glass surface 21 surrounded by the window recessed portion 110.
An acoustic space 300 for a speaker, which has a kind of cabinet structure, is formed between 0 and the speaker holder 30.

The acoustic space 300 has a sufficient spatial area as compared with the conventional speaker installation location using an appropriate empty space, and also constitutes a pseudo cabinet structure. Especially hall 31 and duct 3
When the number 2 is provided, the sound wave from the rear side of the speaker body 10 can also be guided into the vehicle interior, and a sufficient volume can be obtained.
Of course, this cabinet structure is a structure in which sound waves from the rear side are inverted, and thereby the reproduction range is expanded particularly in the low sound range. Even if the flat speaker holder 30 is a simple flat plate without the holes 31 and the like, the problem that the sound waves from the rear side of the speaker body 10 leak and mix with the sound waves on the front side is eliminated.

Further, in this cabinet structure, the speaker holder 30 itself is made of a hard resin such as acrylic resin or a composite resin of acrylic resin and polycarbonate, and the rear side of the speaker body 10 is the window glass surface 210.
Even with the hard wall surface and the window recessed portion 110, since it is usually made of a resin frame, it is made of an optimum material in terms of acoustic characteristics, and good sound quality can be obtained. Of course, this material structure can effectively prevent sound leakage from the speaker body 10 and resonance of the structural material itself due to the vibration of the speaker body 10.

Further, around the glass window 200,
Since there are almost no vehicle parts that resonate when the speaker body 10 is driven, and at least there is no unnecessary sound absorbing material part in the acoustic space 300 in the cabinet structure, good sound quality can be obtained from this aspect as well. .

Furthermore, this speaker holder 30
The height of the glass window 200 to which is attached is exactly the height for the ears of the occupant. Therefore, if the two speaker holders 30 are attached to the left and right windows in the vehicle, the sound wave propagation direction is optimum for the occupant, the volume is rich, and high-quality sound is obtained.

At this time, even if the sound quality from the existing conventional speaker is insufficient as described above, the sound quality from the speaker body 10 of the vehicle speaker system of the present invention is excellent due to its excellent cabinet structure. Since it is prioritized from the viewpoint of the occupant, as a result, high quality sound quality can be obtained. When the vehicle speaker system of the present invention is mounted, it is possible to mutually adjust the settings of the speaker body 10 and the conventional speaker or the like adjacent thereto, or to bring the conventional speaker or the like in the proximity portion into a non-driving state.

4 to 6 show another embodiment of the vehicle speaker system according to the present invention. In this case, the speaker holder 40 is box-shaped and is also made of a hard material, preferably a transparent or semi-transparent hard resin, such as acrylic resin or a composite resin of acrylic resin and polycarbonate, and the inside thereof is the speaker body 10.
And a hole 41 formed of a through hole is formed on the front side thereof. The speaker holders 40 are, for example, two as a set, and the back door 1 of the vehicle 120 such as an off-road vehicle or a station wagon vehicle is used.
21 glass windows 200 are attached to the left and right corners.

The shape of this box portion is the glass window 20.
0 has a substantially rectangular shape corresponding to the left and right corners, and the back side (window glass surface 210 side) thereof may be an open type or a closed type. It is preferable that the upper surface and the lower surface of the box portion, and further the side surface of the box portion be fitted in the edge portion of the window frame portion of the glass surface 210. At this time, an appropriate stopper may be used between the box portion and the window frame portion, or a transparent or semitransparent adhesive tape or the like may be used so that the attached state does not easily come off.

Even when the speaker holder 40 is attached, an acoustic space for a speaker having a kind of cabinet structure is formed inside the window glass surface 210 as in the case of FIGS. The effect of is obtained.

When mounting the speaker holder 40, as shown in FIG. 7, a flat plate-shaped holder support 42 made of transparent or translucent resin is provided on the back side of the speaker holder 40 so that the upper and lower portions thereof extend from the box portion. The upper and lower protruding portions 42a and 42b can be inserted and attached in a gap between the window glass surface 210 and the window frame portion. This allows for a simple installation by just fitting.

Further, as shown in FIG. 8, a holder support 43 is provided on the back side thereof, which is a slide type crosspiece member in which at least one of the upper and lower portions thereof is extendably and contractably extended from the box portion. Protruding portion 43a,
43b can also be attached by, for example, inserting it into a gap between the window glass surface 210 and the window frame portion. It should be noted that this slide mechanism is composed of an elongated hole and a stopper, but is not limited to this. Further, since the holder support 43 has a rod shape having a relatively narrow width, the holder support 43 is not limited to the transparent or semitransparent resin, and may be a metal frame or the like. In any case, this structure enables simple attachment to the window glass surface 210 of a certain range by a simple sliding operation.

9 to 11 show still another embodiment of the vehicle speaker system according to the present invention.
In this case as well, the speaker holder 40 has the same structure as in the case of FIG. 4 to FIG. 6, and is one of the window recessed portions 110 on the inside of the vehicle in the glass window 200 of an off-road vehicle or a one-box type wagon vehicle. Attached to the section.

That is, the speaker holder 40 shown in FIG. 9 is fitted between the upper and lower parts at the right corner (the left corner and the center are also acceptable) of the window recess 110, and the speaker holder 4 shown in FIG.
0 is the right corner of the window recess 110 (left corner and center are also acceptable)
It is attached to the upper side (or the lower side is also possible). By these attachments, it becomes possible to optimally design or set the attachment position of the speaker main body to the occupant, and a great degree of freedom in design can be obtained.

Also in this partial mounting, when the speaker holder 40 is formed of a transparent or semitransparent resin, the window glass surface 21 is formed as in the case of FIGS. 1 to 3 described above.
Inside 0, an acoustic space for a speaker that forms a kind of cabinet structure is formed, and almost the same effect can be obtained.

The glass window 200 to which the present invention can be applied.
Are not limited to those in the above-described embodiment, but include all windows of a normal vehicle. The window also has a window recessed portion 110 having a depth as shown in FIGS. 1 to 3 and 9 to 10.
The window having a window may be a window having only the window glass surface 210 as shown in FIG.

[0035]

As is apparent from the above description, the vehicle speaker system according to the present invention has the following excellent effects.

(1) First, in the vehicle speaker system of the present invention, the flat plate-shaped or box-shaped speaker holder is used so that the inside of the window glass surface of the vehicle and the flat plate-shaped speaker holder or the box-shaped speaker holder box In addition, since a pseudo cabinet-like acoustic space consisting of a relatively large space is formed, high quality sound quality can be obtained.

(2) In the acoustic space of this cabinet structure, the speaker holder is made of a hard resin, and the mounting surface is hard and is a thick window glass surface, so it is made of an optimal material in terms of acoustic characteristics. From this point as well, high quality sound quality can be obtained. Of course, since the cabinet structure consisting of this hard resin and the window glass surface has sufficient strength, a high-class cabinet structure can be realized without incorporating a crosspiece-like reinforcing member or a splint-like reinforcing member as in the conventional case. It

(3) Since the speaker holder is mounted on the window glass surface of the vehicle, the speaker body is installed at the optimum height and the optimum propagation direction when viewed from the passenger side. Also, high quality sound can be obtained.

(4) Further, when the speaker holder is provided with a hole or a duct, sound waves from the rear side of the speaker body can be smoothly introduced into the vehicle compartment, and a sufficient volume can be obtained. As a result, the reproduction range can be expanded particularly in the low tone range.

(5) Further, when the speaker holder is made of a transparent or semi-transparent hard resin, although the field of view is partially narrowed, the original function of the window is maintained as it is, and the mounting state can be easily confirmed. There is also.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an example of a vehicle speaker system according to the present invention.

FIG. 2 is a front view of the vehicle speaker system of FIG. 1 as seen from the inside of a vehicle.

3 is a rear view of the vehicle speaker system of FIG. 1 from the vehicle exterior side.

FIG. 4 is a front view from the inside of the vehicle, which is another example of the vehicle speaker system according to the invention.

5 is a perspective view showing a box-shaped speaker holder in the vehicle speaker system of FIG.

FIG. 6 is a perspective view of the vehicle speaker system of FIG. 4 as seen from the outside of the vehicle.

FIG. 7 is a perspective view showing a box-shaped speaker holder which is another example of the vehicle speaker system according to the invention.

FIG. 8 is a perspective view showing a box-shaped speaker holder which is another example of the vehicle speaker system according to the invention.

FIG. 9 is a perspective view showing a mounted state of a box-shaped speaker holder which is another example of the vehicle speaker system according to the invention.

FIG. 10 is a perspective view showing a mounted state of a box-shaped speaker holder which is another example of the vehicle speaker system according to the invention.

FIG. 11 is a vertical cross-sectional view showing a general closed-type speaker cabinet structure.

FIG. 12 is a vertical cross-sectional view showing a general bass reflex type speaker cabinet structure.

FIG. 13 is a vertical cross-sectional view showing another example of a general bass reflex type speaker cabinet structure.

[Explanation of symbols]

10 speaker body 30 flat speaker holder 31 hole 32 duct 40 box-shaped speaker holder 41 hole 42 holder support 43 holder support 100, 120 vehicle 110 window recess 200 glass window 210 window glass surface 300 acoustic space

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04R 1/02 102 H04R 1/02 101 B60R 11/02

Claims (5)

(57) [Claims] 1. A flat plate-shaped speaker holder made of a hard material on which a speaker body is mounted is mounted inside a window glass surface of a vehicle at an appropriate interval to provide an acoustic space between the window glass surface and the speaker holder. A speaker system for vehicles characterized by being formed. 2. The flat speaker holder is made of a transparent or translucent hard resin, and is attached to a window recessed portion of a window glass surface in a vehicle.
The vehicle speaker system described. 3. A rear side made of a hard material on which a speaker main body is mounted is an open type inside a window glass surface of a vehicle.
The mounting box-shaped speaker holder that, the window
There is sound on the glass surface and the box part of the speaker holder.
A vehicle speaker system characterized by forming a sound space . Wherein said box-shaped speaker holder made of a transparent or translucent hard resin, according to claim 3, characterized in that this was attached to a portion or all of the window recessed portion of the interior window glass surface Vehicle speaker system. 5. A method according to claim wherein said box-shaped speaker holder made of a transparent or translucent hard resin, characterized in that it has attached to the window frame portion of the vehicle window glass surface
The vehicle speaker system according to item 3 .