JP2560868B2 - In-vehicle speaker device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle-mounted speaker device that provides a speaker reproduction sound to a wide range inside a vehicle such as a sightseeing bus or a train.

[Conventional technology]

FIG. 5 and FIG. 6 are, for example, configuration diagrams of a state where the conventional vehicle-mounted speaker device described in “MK series bus catalog” issued by Mitsubishi Motors Corporation is mounted on a vehicle as viewed from the front and side. And in the drawing,
(1) is the body of a sightseeing bus, (2) is the ceiling inside the car, (3)
Is a side window, (4) is a seat, (5) is a plurality of full-band speakers mounted on the vehicle interior ceiling (2) at predetermined intervals, and (6) is a luggage rack.

As described above, the conventional in-vehicle speaker device is configured, and the speaker (5) is applied to the vehicle interior ceiling (2) by utilizing the structural material (framework) itself that constitutes the vehicle body (1). Installed at intervals.

 Next, the operation of the above configuration will be described.

That is, the in-vehicle broadcast and the guide sound are radiated into the vehicle as reproduced sound from a plurality of all-band speakers (5) attached to the vehicle interior ceiling (2), and can be heard by a person sitting on the seat (4). It is like this.

[Problems to be Solved by the Invention]

Therefore, the speaker cannot be installed in a place where there is no structural material, and the number of installed speakers is limited, and for a person sitting near the full band speaker (5), the full band speaker (5 ) Can be heard well, but
It is difficult for a person who sits between the speakers for full band and away from the speaker for full band (5) to hear the reproduced sound of the speaker for full band (5), and the reproduced sound is blocked by the luggage rack (6). However, there was a drawback that the reproduced sound was difficult to hear.

As described above, the conventional vehicle-mounted speaker device cannot provide a wide uniform reproduction sound field in the entire vehicle, and is indispensable especially for AV, which has been actively performed in tourist buses in recent years. It was difficult to reproduce a large sound field.

The present invention has been made in view of the above problems, and is capable of emitting the reproduced sound of the speaker to the entire interior of the vehicle regardless of the structure constituting the vehicle body and without being blocked by the luggage rack. It is an object of the present invention to provide a speaker device for use.

[Means for solving the problem]

In order to achieve the above object, a vehicle-mounted speaker device according to the present invention includes an indirect sound speaker system installed in a luggage rack portion in a vehicle and a direct sound speaker system installed in a central portion of a vehicle interior ceiling. The indirect sound speaker system includes a speaker mounting portion provided near the side window of the luggage rack, and a plurality of speaker mounting portions arranged so that the sound emitting surface is close to the side window surface. The direct sound speaker system includes a plurality of band speakers and a rear plate that is provided behind the all band speakers and shields the main space of the luggage rack from each other. A mountain-shaped speaker cabinet having left and right baffle surfaces, and a sound emission surface facing each of the baffle surfaces inside the mountain-shaped speaker cabinet. And a plurality of speaker units which are not, characterized in that the orientation of the sound emitting surface of the speaker unit is given directionality such as the orientation of the baffle surface facing the aisle seat and window-side sheet side.

[Action]

According to the present invention, the sound radiated from the full-band speaker of the indirect sound speaker system provided on the side of the luggage rack in the vehicle toward the side window surface is reflected at the same time as the radiation and is reflected in the aisle seat and window seat side directions. The sound emitted from the speaker unit of the direct sound speaker system installed in the central part of the vehicle interior ceiling propagates directly to the aisle seats and window seats. To go. Therefore, the sound reproduced from the speaker is radiated to the whole area of the vehicle to expand the sound field, and therefore, regardless of whether the seat is the aisle side seat or the window side seat, the person who is seated on any of the seats will be able to You can comfortably listen to both the indirect sound and the direct sound of the sound as speaker playback sound.

Example of Invention

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a configuration in which a vehicle-mounted speaker device according to the present invention is mounted on a vehicle, FIG. 2 is an enlarged cross-sectional view of a main part of the indirect sound speaker system in FIG. 1, and FIG. FIG. 1 is an enlarged cross-sectional view of a main part of the direct sound speaker system in FIG. 1, and FIG. 4 is a side view showing a state in which the vehicle-mounted speaker device according to the present invention is mounted in a vehicle. In these drawings, the same components as those of the conventional example shown in FIGS. 5 and 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the drawing, (7) is a rear plate standing upright on the side window (3) side of the luggage rack (6), (8) is a speaker mounting surface provided on the luggage rack (6), and (9) is the entire band. Speaker for all bands, and a plurality of them are arranged at arbitrary positions on the speaker mounting surface (8) so that the front surface of the speaker (9) for all bands is slightly separated in a direction facing the side window (3). Is installed. Speaker for all bands (9)
The installation space (8a) is completely cut off from the main space portion (6a) of the luggage rack (6) due to the presence of the rear plate (7), and the rear plate (7) and the speaker mounting surface are A cabinet for the full band speaker (9) is formed by (8).

In this way, the in-vehicle speaker system for indirect sound is constructed.

On the other hand, (10) is a mountain-shaped speaker cabinet in which a plurality of mountain-shaped speaker cabinets are arranged in a row in the front-rear direction at the central portion of the vehicle interior ceiling.
(11) and (11) are the above-mentioned mountain speaker cabinet (10)
Is a baffle surface formed on the left and right sides of the. (12),
A plurality of speaker units (12) are provided inside the mountain-shaped speaker cabinet (10), and the speaker units are arranged so that the sound emission surfaces face the baffle surfaces (11) and (11). The front part of (12) is attached.

The direction of the baffle surfaces (11), (11) is such that the reproduced sound emitted from the speaker units (12), (12) is seated on the aisle seat (14) and window seat (15) in the vehicle. The passage-side seat (14) and the window-side seat (15) are oriented so as to be radiated toward.

In this way, the direct sound speaker system in the vehicle is configured.

The baffle surfaces (11) and (11) are either provided with an opening at the center or formed in a mesh portion, and the speaker units (12) and (12) are provided.
The sound emitted from the outside is efficiently emitted to the outside. (13) is the speaker unit (12), (1
The dustproof net attached to the front of 2), and (16) the floor.

 Next, the operation of the above configuration will be described.

First, by the indirect sound speaker system installed on both left and right sides in the vehicle, the reproduced sound emitted from the full band speaker (9) provided on the luggage rack (6) side is directed to the side window (3) surface. At the same time as being radiated, it is reflected by the side window (3) and radiated as an indirect sound toward the passage side seat (14) and the window side seat (15). On the other hand, due to the direct sound speaker system installed in the central part of the vehicle interior ceiling, the left and right baffle surfaces of the mountain-shaped speaker cabinets (10) installed in the central part of the vehicle interior ceiling (2) in a row in the front-rear direction. The reproduced sound radiated from the sound radiation surface of the speaker unit (12) mounted on (11) and (11) is directly radiated toward the passage side seat (14) and the window side seat (15).

In this manner, the indirect sound speaker system and the direct sound speaker system radiate the direct sound and the indirect sound as a speaker reproduced sound in a wide range in the vehicle, so that the aisle seat (14) or the window seat Everyone in the car, regardless of who is seated in (15), can enjoy the realistic speaker reproduction sound due to the indirect sound or the direct sound. Therefore, for example, it is possible to reproduce the effect of expanding the sound field, which is indispensable for AV and the like, which has recently been performed on a sightseeing bus or the like, in a natural form.

In the above embodiments, the application to a sightseeing bus as a vehicle has been described as an example, but the vehicle-mounted speaker device is applied not only to a sightseeing bus but also to a vehicle such as a train having a luggage rack. It goes without saying that the same effect can be expected.

〔The invention's effect〕

As described above, according to the vehicle-mounted speaker device of the present invention, it is possible for a person sitting in any of the seats in the vehicle to have a simple structure in which a slight improvement is added to a vehicle such as a bus or a train. However, there is an effect that it is possible to provide a speaker reproduction sound with a realistic sensation by indirect sound or direct sound.

[Brief description of drawings]

FIG. 1 is a front view of a configuration in which a vehicle-mounted speaker device according to the present invention is mounted on a vehicle, and FIG. 2 is an enlarged cross-sectional view of an essential part of the indirect sound speaker system in FIG.
1 is an enlarged cross-sectional view of a main part of the direct sound speaker system in FIG. 1, FIG. 4 is a side view showing a state in which a vehicle-mounted speaker device according to the present invention is mounted on a vehicle, and FIG. 5 is a conventional vehicle-mounted speaker system. FIG. 6 is a front view of the speaker device mounted on the vehicle, and FIG. 6 is a side view of the conventional vehicle speaker device mounted on the vehicle. (2) …… Ceiling in the car, (3) …… Side window,
(6) …… Luggage rack, (7) …… Rear panel, (8) …… Speaker mounting surface, (9) …… Speaker for all bands, (10) ……
Mountain speaker cabinet, (11) …… Baffle surface,
(12) …… Speaker unit, (14) …… Aisle side seat, (15) …… Window side seat. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A speaker system for indirect sound installed in a luggage rack portion in a vehicle, and a speaker system for direct sound installed in a central portion of a vehicle interior ceiling, wherein the indirect sound speaker system comprises: A speaker mounting portion provided near the side window, a plurality of full-band speakers arranged so that the sound emitting surface is close to the side window surface on the speaker mounting portion, and a speaker behind the full-band speaker. The direct sound speaker system is provided with a rear face plate that is provided to shield the main space of the luggage rack from the main space. The direct sound speaker system is a mountain-shaped speaker having left and right baffle faces arranged in a row in the front-rear direction in a central portion of a vehicle interior ceiling. The speaker includes a cabinet and a plurality of speaker units arranged inside the mountain-shaped speaker cabinet so that the sound emission surfaces face the baffle surfaces. Vehicle-mounted speaker apparatus in which the direction of the sound emitting surface of the unit is made to have directionality in the direction of the baffle surface facing the aisle seat and window-side sheet side.