JPS6216109Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the mounting structure of a speaker mounted on a vehicle such as an automobile.

Conventionally, speakers installed in vehicles such as automobiles have been installed on an instrument panel in front of a driver's seat, a side door, or the like. For this reason, if you adjust the volume of the speaker so that the person in the driver's seat can easily hear it, the person in the rear seat will have a hard time hearing it, and if you adjust the volume to the person in the rear seat, it will be difficult for the person in the driver's seat to hear. The problem is that the sound is high pitched and noisy. For this reason, some cars have speakers installed on the rear seat side, but since the devices are duplicated, there are problems such as higher costs and space requirements.

Furthermore, as shown in FIG. 1, conventional speakers have mainly been cone-shaped speakers 1;
The cone part 1a has the fate of unavoidable split vibration in the high range, and it is difficult to drive from the low range to the high range with one speaker, so this speaker is used in 2-way, 3-way, etc. Although there are some methods that have solved the problem, they are difficult and expensive to manufacture.
In addition, in the cone-type speaker 1, the diameter R of the cone portion 1a must be increased in order to produce a bass range, which increases the depth H. Moreover, since the resonance box 2 is required, the depth H is not suitable for use in a vehicle. The request to make it smaller was not included.

The present invention was developed in view of the above-mentioned conventional problems, and it allows sound to flow evenly to the front and rear of the vehicle interior, or to the left and right sides, using a single speaker. It is an object of the present invention to provide a mounting structure for a full-plane drive type planar speaker that allows the sound to flow through the entire surface.

To this end, the mounting structure of the present invention includes a case having a substantially box-shaped cross section, a base plate fixed inside the case so as to partition the case into front and back, and a plurality of magnets protruding from one side of the base plate. and a diaphragm disposed parallel to and spaced from the base plate in a case on one side of the base plate, and the case has a front opening opened on the one side of the base plate. A rear opening is formed on the other side of the base plate, and an acoustic space is formed between the rear opening and the other side of the base plate when the rear opening is closed. A lid is provided to be openable and closable, and the base plate is provided with a plurality of small holes penetrating in the front-rear direction, and the diaphragm is provided with a plurality of protrusions facing the magnet, and a plurality of protrusions facing the magnet, and a plurality of ridges extending in the direction of the magnetic flux of the magnet. A voice coil is disposed perpendicular to the vehicle interior, and the case is attached to a partition member that partitions the interior of the vehicle into front and back, or a partition wall that divides the interior of the vehicle from the outside of the vehicle. It was designed to achieve the objectives of the period.

The present invention will be described below with reference to illustrative embodiments.

Figures 2 and 3 show an example in which a full-plane drive type flat speaker a is attached to a cab-over type box-shaped car A. The driver's seat side 11 and the rear seat side 12 are partitioned by a partition rod 13, which is a partition member detachably attached to a side wall, ceiling, or floor surface, and the full-plane drive type flat speakers a are located on the left and right sides of the partition rod 13. is installed.

As shown in FIG. 4, the full-plane drive type planar speaker a includes a case 17 having a substantially box-shaped cross section, a base plate 15 fixed within the case 17 so as to partition the case 17 into front and rear parts, and the base plate 15. A plurality of magnets 14 protruding from one side 15b and one side 1 of the base plate 15.
It consists of a diaphragm 16 and the like arranged in parallel with the base plate 15 at a distance in the case 17 on the 5b side.

A front opening 17a is opened on the side of the case 17 opposite to one side 15b of the base plate 15, and the other side 15c of the base plate 15 is opened.
A rear opening 17b is opened on the opposite side. A protection net 23 is provided in the front opening 17a. Further, the lid 1 is connected to the rear opening 17b via a hinge 34 at its lower end.
8 is attached so that it can be opened and closed. The lid 18
is normally closed by a locking device 19 provided at its upper end. And the lid 18
In the closed state, an acoustic space 22 is formed between the lid 18 and the other side surface 15c of the base plate 15.

The base plate 15 is provided with a plurality of small holes 15a penetrating in the front-rear direction. Further, a plurality of protrusions 16a are provided on the diaphragm 16 at a position facing the magnet 14. Further, the diaphragm 16 is provided with a voice coil (not shown) arranged in a direction perpendicular to the direction of the magnetic flux of the magnet 14.

The fully driven flat speaker a configured as described above is connected to the partition rod 13 via the bracket 20 with the front opening 17a facing the driver's seat side 11 and the rear opening 17b facing the rear seat side 12. It is fixed with screws. When a passenger in the rear seat 12 wants to hear the sound, the lid 18 is opened to let the sound flow to the rear. When the lid 18 is closed, the sound emitted from the rear surface of the diaphragm 16 is transmitted through the plurality of small holes 15a formed in the base plate 15 and into the acoustic space 22.
The acoustic space 22 absorbs sounds from the rear, and prevents sounds emitted from the rear from coming out from the front opening 17a. An amplifier, a switch, etc. for outputting to the flat speaker a are provided on the instrument panel on the driver's seat side 11 and on the side wall on the rear seat side 12. According to this embodiment, it is possible to send equal sound to the driver's seat side 11 and the rear seat side 12, so that broadcasts and the like can be heard at a suitable volume on both seat sides.

Further, according to this embodiment, the flat speaker a is attached to the partition bar 13 so as to protrude slightly toward the rear seat side 12, but the partition bar 13 is provided at a position that does not hinder the movement of the occupant. Therefore, the planar speaker a does not get in the way.

Incidentally, the mounting position of the flat speaker a can be freely positioned vertically, horizontally, or horizontally according to the vehicle.
Further, in the embodiment described above, the flat speaker a is attached to the partition rod 13, but the mounting method is not limited to this, and can be mounted in any manner, such as hanging it from the ceiling or standing it up from the floor. Further, in the above embodiment, the planar speaker a is fixed to the partition rod 13 with the screw 20, but by rotatably supporting the planar speaker a at its center in the vertical direction or in its horizontal direction. The direction of the planar speaker a can be adjusted freely.

The planar speaker a repels the magnet 14 by the magnetic force generated from the coil wound around the diaphragm 16, causes the diaphragm 16 to vibrate, and the diaphragm 1
A plane wave is transmitted in front of 6.

Incidentally, a plane wave is also generated on the rear side of the diaphragm 16, but
This plane wave is transmitted through the small hole 1 made in the magnet 14.
5a to the acoustic space 22, and when the lid 18 is closed, the plane wave is absorbed in the acoustic space 22,
Good quality sound is obtained on the driver's seat side 11, and on the rear seat side 12, the sound emitted from the front of the flat speaker a resonates as a backtone. When the locking device 19 is removed and the lid 18 is opened, the plane waves generated from the front side of the diaphragm 16 propagate to the driver's seat side 11, and the plane waves generated from the back side of the diaphragm 16 propagate to the rear seat side 12. Therefore, if the passenger is riding only on the driver's seat side 11, the lid 18 will be closed, and if the passenger is riding on both the driver's seat side 11 and the rear seat side 12, the lid 18 will be closed. Open lid 18 and listen.

Although the front opening 17a is formed in the case 17 and the protective net 23 is provided in the front opening 17a, the present invention is not limited to this. The front opening 17a may have a plurality of communicating small holes.

Figures 5 and 6 show an example in which a flat speaker a is attached to a bonnet type car B, and the method of attachment is the same as the installation method to the cab over type box type car A. Then, it is attached to a partition rod 26 that is a partition member between the driver's seat side 24 and the rear seat side 25. This embodiment is most suitable for taxis, etc., and can be used in the same way as the embodiment of the cab-over type box-shaped car A. Furthermore, even if the car has the same bonnet type, as shown in Fig. 7, in the hatchback type car C, if a flat speaker a is installed behind the driver's seat 27, the hatch 28 can be opened to enjoy music etc. outside the car. I can do it.

8 to 10 show another embodiment of the present invention, and in this embodiment, a side part of the vehicle body, for example, a door 29 forming a partition wall that partitions the interior of the vehicle D from the outside of the vehicle. A flat speaker a' is installed between an inner panel 30 and an outer panel 31. A protective net 32 is stretched over the opening 30a of the inner panel 30 to protect the front surface of the flat speaker a', and an opening 31a of the outer panel 31 is provided with a lid 33 that can be opened and closed. By opening the lid 33, the sound emitted from the rear surface of the flat speaker a' can be transmitted to the outside of the vehicle. The lid 33 is lockable. still,
In this embodiment, the planar speaker a' is designed so that it does not protrude into or out of the vehicle.

15' is the base plate, 16' is the diaphragm, 1
7' is a case, and 22' is an acoustic space.

As described above, according to the present invention, fully-driven flat speakers that can provide almost the same tone color and sound quality for both front and back sounds are installed at appropriate positions in the vehicle interior, so that sound flows evenly into the vehicle interior. Therefore, wherever you are, you can listen to broadcasts at a reasonable volume, and costs can be reduced because there is no need for rear-seat speakers.

Furthermore, according to the present invention, by attaching the planar speaker to the partition member or partition wall, the planar speaker can be installed so as not to get in the way, making it easier and safer for passengers to move.

Further, according to the present invention, depending on the vehicle type and the mounting location, it is possible to enjoy music etc. while relaxing outside the vehicle.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a cone-shaped speaker;
The figure shows a side view of a fully-driven flat speaker installed in a cab-over type box car, Figure 3 is a rear view of the same as the above, and Figure 4 is an enlarged view of the same as the above when the flat speaker is installed. 5 is a side view showing the flat speaker installed in a bonnet type vehicle, FIG. 6 is a rear view of the same as above, and FIG. 7 is a side view showing the flat speaker installed in a hatchback vehicle. , Figure 8 is a side view showing the state when a flat speaker is attached to the side (door) of the vehicle body.
FIG. 9 is a rear view of the same as the above, and FIG. 10 is an enlarged sectional view of section P in FIG. 11, 24, 27 are on the driver's seat side, 12, 25 are on the rear seat side, 13, 26 are partition rods, a, a' are full-plane drive type flat speakers, 15, 15' are base plates,
16, 16' are diaphragms, 17, 17' are cases, 1
8 and 33 are lids, 28 are hatches, and 29 are doors.

Claims (1)

[Scope of utility model registration request] A case having a substantially box-shaped cross section, a base plate fixed within the case so as to partition the case into front and back, a plurality of magnets protruding from one side of the base plate, and a case on one side of the base plate. The case has a diaphragm disposed parallel to the base plate with a space therebetween, and the case has a front opening opened on one side of the base plate and an opening on the other side of the base plate. a rear opening is formed, the rear opening being openably and closably provided with a lid that forms an acoustic space between the rear opening and the other side surface of the base plate when the rear opening is closed; The base plate has a plurality of small holes penetrating it in the front and back direction,
Further, the diaphragm is provided with a plurality of protrusions facing the magnet and a voice coil arranged in a direction perpendicular to the direction of magnetic flux of the magnet, and the case is provided with a partition that partitions the interior of the vehicle into front and back. A mounting structure for an in-vehicle fully-driven flat speaker, characterized in that it is attached to a component or a partition wall that partitions the inside of a vehicle and the outside of the vehicle.