JPH03173297A - On-vehicle speaker equipment - Google Patents

Abstract

PURPOSE:To radiate a playback sound of a speaker over the entire cabin by providing directivity to the direction of a buffle face so that a sound radiation face of a speaker unit is directed toward an aisle seat and a window seat. CONSTITUTION:A playback sound radiating from a full band speaker 9 provided to a baggage shelf 6 in an indirect speaker system installed to the left and right in the cabin radiates toward a side window 3 and is reflected in the side window 3 and sound as indirect sound radiates in the direction of the aisle seat 14 and the window seat 15. On the other hand, a playback sound radiating from the sound radiation face of a speaker unit 12 mounted to left/right buffle faces 11, 11 of plural chevron speaker cabinets 10 in a line in the forward/ backward in the middle of in-cabin ceiling 2 radiates directly in the direction of the seats 14, 15 by direct sound speaker system installed in the middle of the in-cabin ceiling.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vehicle-mounted speaker device that provides speaker-reproduced sound over a wide area inside a vehicle such as a sightseeing bus or a train.

[Conventional technology]

FIGS. 5 and 6 are configuration diagrams of a state in which a conventional in-vehicle speaker device described in, for example, the "rMK Series Bus Catalog" published by Mitsubishi Motors Corporation is mounted on a vehicle, viewed from the front and side. In the drawing, (1)
is the body of a tourist bus, etc., (2) is the ceiling inside the car, (3) is the side window, (4) is the seat, (5) is the ceiling inside the car (
2) is a plurality of full-band speakers installed at predetermined intervals, and (6) is a luggage rack.

As described above, the conventional in-vehicle speaker device is configured, and the speakers (5) are mounted on the car interior ceiling (2) at equal intervals using the structural material itself that makes up the car body m. There is.

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

That is, in-car announcements and guide sounds are radiated into the car as reproduced sounds from a plurality of full-band speakers (5) attached to the ceiling (2) of the car, and can be heard by people sitting in the seats (4). It looks like this.

[Problems to be solved by the invention]

Therefore, it is not possible to install speakers in places without structural materials, and the number of speakers that can be installed is limited. ) can be heard clearly, but for those who are seated between the full-band speakers or away from the full-band speaker (5), it may be difficult to hear the full-band speaker (5)
It is difficult to hear the playback sound of the luggage rack (6
), which made it difficult to hear the reproduced sound.

As described above, with conventional car speaker systems, it is impossible to provide a wide, uniform reproduction sound field throughout the entire interior of the car.
In particular, it has been difficult to reproduce sound field expansion, which is indispensable for AV, etc., which has become popular in tourist buses and the like in recent years.

This invention was made in view of the above problems, and
To provide a vehicle-mounted speaker device capable of radiating reproduced sound from a speaker throughout the interior of a vehicle, regardless of the structure constituting the vehicle body and without being obstructed by luggage racks.

[Means for resolving issues]

In order to achieve the above object, the in-vehicle speaker device according to the present invention includes an indirect sound speaker system installed in a luggage rack area inside the car, and a direct sound speaker system installed in the central part of the ceiling inside the car. , the indirect sound speaker system includes a speaker mounting part provided near the side window of the luggage shelf, and a plurality of speakers arranged in the speaker mounting part so that the sound emission surface is close to the side window surface. The direct sound speaker system includes a speaker for all bands and a rear panel installed behind the speaker for all bands to isolate it from the main space of the luggage rack. A chevron-shaped speaker cabinet having individually arranged left and right baffle surfaces, and a plurality of speaker units arranged inside the chevron-shaped speaker cabinet so that a sound emission surface faces each of the baffle surfaces, The baffle surface is directional so that the sound emitting surface of the unit faces toward the aisle seat and the window seat.

[Effect]

According to this invention, the sound emitted toward the side window surface from the full-band speaker of the indirect sound speaker system installed on the side of the luggage rack inside the car is simultaneously reflected toward the aisle seat and the window seat. On the other hand, the sound emitted from the speaker unit of the direct sound speaker system installed in the center of the ceiling of the car is transmitted as direct sound toward the aisle seats and the window seats. To go. Therefore, the sound played by the speakers is radiated throughout the interior of the car, expanding the sound field.
Regardless of whether it is an aisle seat or a window seat, a person sitting on any seat can comfortably hear both the indirect sound and the direct sound as reproduced sound from the speaker.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

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

In the drawing, (7) is a rear plate installed near the side window (3) of the luggage shelf (6), and (8) is the rear plate installed near the side window (3) of the luggage shelf (6).
The speaker mounting surface (9) provided in 6) is an all-band speaker, and the front part of this all-band speaker (9) is slightly spaced apart in the direction facing the side window (3). A plurality of speakers are mounted at arbitrary positions on the speaker mounting surface (8). The installation space (8a) for the full-band speaker (9) is completely cut off from the main space (6a) of the luggage rack (6) by the presence of the rear panel (A). (7) and the speaker mounting surface (8) form a cabinet for the full-band speaker (9).

In this way, a speaker system for indirect sound in a car is configured.

On the other hand, 00 is a mountain-shaped speaker cabinet in which a plurality of speaker cabinets are arranged in a row in the front and back direction in the center of the ceiling of the car, and 0υ,
αυ is a baffle surface formed on the left and right sides of the mountain-shaped speaker cabinet 01. (2).

A is a plurality of speaker units arranged inside the angle-shaped speaker cabinet (101), and the front part of the speaker unit α is arranged such that its sound emission surface faces the baffle surfaces αυ, 0υ. It is installed.

This baffle surface a11. The direction of αυ is such that the reproduced sound emitted from the speaker units 03, 0 is radiated toward the person seated on the aisle seat (I4 and the window seat α9) in the vehicle. It has directionality in the direction of the sheet αυ.

In this way, a speaker system for direct sound inside a car is configured.

It should be noted that each of the baffle surfaces aυ and 0υ has an opening in the center or is formed in the menu portion, and the speaker unit Q'IJ.

The sound radiated from I2 is efficiently radiated to the outside. 03 is the above speaker unit 13°OX
The dust-proof net attached to the front part of 5, I0 is the floor surface.

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

First, by the indirect speaker system installed on both the left and right sides of the vehicle, the reproduced sound emitted from the full-band speaker (9) installed on the luggage rack (6) side is directed toward the side window (3). At the same time as the sound is emitted, it is reflected by the side window (3) and is emitted as indirect sound toward the aisle seat 04 and the window seat 09. On the other hand, the direct sound speaker system installed in the center of the car ceiling (2) has a plurality of chevron-shaped speaker cabinets installed in a row in the front and back direction (the left and right baffle surfaces of the IG 0υ , 0υ, the reproduced sound emitted from the sound emitting surface of the speaker unit (2) is directly radiated toward the aisle seat α4 and the window seat 0.

In this way, the indirect sound speaker system and the direct sound speaker system radiate the direct sound and the indirect sound as sound reproduced by the speakers over a wide area in the car. Everyone in the car, regardless of who is sitting in the car, can enjoy the realistic sound reproduced by the speakers due to the indirect sound and direct sound. Therefore, for example, the effect of expanding the sound field, which is indispensable for AV and the like, which has been used in tourist buses in recent years, can be reproduced in a natural manner.

In the above embodiment, the application to a tour bus was explained as an example of the vehicle, but the above-mentioned in-vehicle speaker device can be applied not only to tour buses but also to vehicles such as trains equipped with luggage racks. Needless to say, the same effect can be expected.

(Effects of the Invention) As explained above, according to the in-vehicle speaker device according to the present invention, it is possible to sit in any seat in a vehicle such as a bus or train with a simple configuration that requires only slight improvements. This has the effect of providing realistic speaker reproduction sound using indirect sound and direct sound even to people who are living in the same room.

[Brief explanation of the drawing]

FIG. 1 is a front configuration diagram of the in-vehicle speaker system according to the present invention mounted on a vehicle, FIG. 2 is an enlarged cross-sectional view of the main parts of the indirect sound speaker system in FIG. 1, and FIG.
The figure is an enlarged sectional view of the main parts of the direct sound speaker system in Figure 1, Figure 4 is a side view of the in-vehicle speaker system according to the present invention installed in a vehicle, and Figure 5 is a conventional tonne-mounted speaker system. FIG. 6 is a configuration diagram of a conventional vehicle-mounted speaker device mounted on a vehicle, seen from the front. FIG. (2)...Car ceiling, (3)...Side window,
(6)...Luggage shelf, (7)...Rear plate, (8)...
・Speaker mounting surface, (9)...Speaker for all bands, 0
■...Mountain-shaped speaker cabinet. 0υ...baffle surface, 13...speaker unit,
α9: Aisle seat, α9: Window seat. In addition, the same symbols in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) The indirect sound speaker system is equipped with an indirect sound speaker system installed in the luggage rack part of the car and a direct sound speaker system installed in the center of the ceiling of the car, and the indirect sound speaker system is installed in the side window of the luggage rack. a speaker mounting portion provided near the speaker mounting portion; a plurality of full-band speakers disposed in the speaker mounting portion such that a sound emission surface is close to the side window surface; and a plurality of full-band speakers provided behind the full-band speaker. The direct sound speaker system includes a rear panel that blocks the main space of the luggage rack, and includes a mountain-shaped speaker cabinet having a plurality of left and right baffle surfaces arranged in a row in the front-rear direction at the center of the ceiling of the vehicle. , comprising a plurality of speaker units arranged inside the chevron-shaped speaker cabinet so that a sound emission surface faces each of the baffle surfaces,
An in-vehicle speaker device, wherein the baffle surface has directionality so that the sound emitting surface of the speaker unit faces toward the aisle seat and the window seat.