JPH045141A - Speaker device for automobile - Google Patents

Abstract

PURPOSE:To enable sufficiently low sound reproducing without harming an interior accommodation space by providing a spiral duct part having a spiral duct communicated with the front face of a speaker unit, at the rear part of an automobile, and communicating this spiral duct part with a sound radiating part provided at the interior front part by a center duct. CONSTITUTION:A spiral duct part 4, enclosed in the spare tire storage space 2 of a trunk room 3 at the rear part of a vehicle body 1, is formed into an integrated body provided with a speaker unit 5 and a spiral duct 6 connected airtightly to the front face of the speaker unit 5 so as to be communicated with its front face space. A center duct 7 is disposed in such a way as to be communicated with the spiral duct 6 and extended frontward along the lower face of the body 1, and this center duct 7 is formed using a center console. The front part of the center duct 7 is communicated with a sound radiating part 8 provided at an interior dash board part, and a spit hole 9 opened to the vehicle interior is provided thereto. A hollow foot vibration part 10 communicated with the front part of the center duct 7 is provided at the foot part of a front seat 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a speaker device for an automobile, and particularly to improvement of its acoustic effect.

[Conventional technology]

Conventionally, speaker devices for automobiles have been embedded in the inner wall surface of the vehicle body, dash board, or inner wall surface of the door.

Conventional speaker devices like this are buried in the walls and doors of the car so as not to damage the living space inside the car, and the speaker device, which has a speaker unit attached to a speaker box, can be brought into the car and installed. You can use more space inside the car compared to the original.

[Problem to be solved by the invention]

In conventional speaker devices such as those described above, the speaker device is buried in the wall surface of the vehicle interior, so it is difficult to provide a large width between the inner wall surface and the outer body of the vehicle, so it is necessary to have sufficient speaker box volume. There was a problem that sufficient regeneration could not be achieved, especially at low temperatures.

This invention was made in order to solve the above-mentioned problems, and the object is to obtain a speaker device for a car that can reproduce sufficient bass sound without impairing the interior living space of the car.

[Means to solve the problem]

A speaker device for an automobile according to the present invention is configured such that a spiral duct part that is integrally formed with a speaker unit and forms a spiral duct that communicates from the front part of the speaker unit is disposed in the rear space of the vehicle, and communicates with the spiral duct to the front of the vehicle. A sound emitting part having an air outlet is connected to the central duct toward the inside of the vehicle.

[Effect]

In this invention, the sound radiated from the front of the speaker unit travels through a long duct consisting of a swirl duct and a central duct, and is radiated from the sound radiating part toward the inside of the car, so that sufficient bass reproduction is achieved due to the backroad horn effect. .

〔Example〕

FIG. 1 is a perspective view of an automobile speaker device showing one embodiment of the present invention, FIG. 2 is a plan view showing its schematic configuration, and FIG.
The figure is a cross-sectional view, (1) is the car body, (2)
is the spare tire storage space in the rear trunk room (3) of this vehicle body (1), (4) is the Uzumaki duck 1 stored in this spare tire storage space (2),
A speaker device (51) and a swirling duct (6) that is airtightly connected to the front surface of the speaker device and passes through the space in front of the speaker device (51) are integrated. This is a central duct that communicates and extends forward along the underside of the vehicle body (1), and is configured using the center console. (8) Central duct on the N side (7)
Air outlet (9) that communicates with the front part of the car and is a sound emitting part installed in the dash board part of the car, and that opens toward the inside of the car.
have. 001 is arranged at the foot of the front seat (11) of the vehicle body (1), and has an internal hollow structure and connects to the central duct (7).
) A foot vibrating section that communicates with the front section.

Figure 4 is a perspective view of the above-mentioned whirlpool duct), part (4),
The figure is a sectional view thereof, FIG. 6 is a perspective view of the foot vibration plate 00), and FIG. 7 is a sectional view thereof.

In the speaker device with such a configuration, the sound pressure radiated from the front of the speaker unit (5) goes around the spiral duct (6) and is transmitted to the central duct (7), and is further transmitted to the sound emitting part ( Since the sound is radiated into the interior space from the air outlet (9) of 8), the sound is radiated from the front to the occupants in the front seat (11), and the sound from the ears and the sound pressure (wind pressure) from the front of the body are emitted. This allows you to feel the sound in its natural state. At this time, the length of the duct from the speaker unit (5) to the sound emission part (8) is the spiral duct l-f61.
Since the total length of the central duct is 71, effective bass reproduction is achieved by the duct effect (backload horn effect).

Further, a part of the sound pressure transmitted through the central duct (7) is transmitted to the front foot diaphragm (101), causing it to vibrate.

Therefore, the person seated in the front seat (11) can use this foot diaphragm GO.
By placing your feet on the +, you can feel the sound pressure from your feet, and in addition to feeling the sound pressure (wind pressure) from the front air outlet (9) in front of your body, you can also experience the sound with your whole body. It's a bastard.

Since the speaker unit (5) does not directly radiate sound toward the inside of the car, the restrictions on the installation location of the swirl duct part (4) are relaxed, and the space inside the car can be effectively utilized. In particular, by arranging the spiral duct portion (4) in the spare tire storage space (2) as in the above embodiment, effective space utilization is possible. If there is no need to store a spare tire in the spare tire storage space (2) conventionally provided in the trunk room (3) of an automobile, this speaker device can be installed using this space.

Moreover, since the center duct (7) can be formed by using the center console that communicates with the front and rear parts of the center of the vehicle, the interior living space of the vehicle is not impaired. This central duct (7) can also be used as a wiring space for various devices in the vehicle and as an air conditioning air duct, and in this case, it is effective if it is properly sealed.

Note that the speaker unit (5) may be one exclusively for bass reproduction, or may be another one.

〔Effect of the invention〕

As described above, according to the present invention, a spiral duct portion having a spiral duct leading from the front of the speaker unit is provided at the rear of the vehicle, and this is configured to communicate with the sound emitting portion provided at the front portion of the vehicle interior through the central duct. Therefore, it is possible to obtain a speaker device for an automobile that can obtain a back-loaded horn effect by using a long duct from the speaker unit to the sound emitting section, and can reproduce sufficient bass sounds without impairing the living space inside the car.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an automobile speaker device according to an embodiment of the present invention, and FIG. 2 is a plan view showing its schematic configuration.
3 is a sectional view thereof, FIG. 4 is a perspective view of the spiral duct portion, FIG. 5 is a sectional view thereof, FIG. 6 is a perspective view of the foot diaphragm, and FIG. 7 is a sectional view thereof. In the figure, (1) is the vehicle body, (2) is the spare tire storage space, (4) is the whirlpool duct, (5) is the speaker unit, (6) is the whirlpool duct, (7) is the center duct, and (8) is the whirlpool duct. (9) is a sound emitting part, and (9) is an air outlet. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] A whirlpool duct part that is integrated with the speaker unit, forms a whirlpool-shaped duct that communicates from the front part of the speaker unit, and is disposed in the rear space of the car, and a central duct that communicates with the whirlpool duct part and extends toward the front of the car. and a sound emitting section communicating with the front part of the central duct and having an air outlet toward the interior space of the vehicle.