JPH0572592U - In-vehicle speaker device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a vehicle-mounted speaker device of high sound quality that does not hinder the driver's visual field behind and is excellent in design. [Constitution] The cabinet 1 includes a low-frequency duct 9 provided on the front surface of a low-frequency speaker unit 2 and a mid-high frequency duct 10 provided on the front surface of a mid-high frequency speaker unit 3.
Are joined to a laterally elongated thin duct 11 having an opening 4 at the other end. In addition, the rear tray 5 behind the rear seat 7 has a rear seat top surface 7
It is provided so as to project from a. The cabinet is attached to the attachment portion 6 so that the top surface portion 1
It is installed in the rear tray 5 so that a is on the rear tray 5 surface and the opening 4 is on the rear tray front surface 5a.
Therefore, the cabinet 1 and the rear tray 5 are integrally configured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle-mounted speaker device installed on a rear tray in a vehicle compartment.

[0002]

[Prior Art]

 In recent years, speaker devices have been required to have high sound quality not only for indoor use but also for vehicle use. For this reason, in-vehicle speaker devices installed on the rear tray are often equipped with a speaker box on the rear tray in order to improve the sound quality, as compared to the conventional speaker unit installed directly inside the rear tray. ing.

[0003]

[Problems to be solved by the device]

 In the conventional vehicle-mounted speaker device having such a structure, when the driver confirms the rear side while the vehicle is traveling, the speaker box arranged on the rear tray obstructs the rear view of the driver. As a result, the driver was unable to perform sufficient rearward confirmation due to the narrow rear view. As described above, the conventional in-vehicle speaker device has a problem in safety while the vehicle is running. Therefore, in order to improve this safety, if the speaker box is made compact by using a small speaker, the problem that high sound quality cannot be obtained with this speaker device occurs. In addition, by arranging the speaker box on the rear tray, for example, when it is used in a car with a simple interior, the speaker box does not match this interior and was not very suitable in terms of design. ..

Therefore, the present invention solves the drawbacks of the above-mentioned conventional example and is excellent in safety because the speaker device does not hinder the rear view of the driver while the vehicle is traveling. It is an object of the present invention to provide a high-quality in-vehicle speaker device that is excellent in design.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the vehicle-mounted speaker device according to the present invention is the speaker device according to the first invention, in which the rear tray 5 in the vehicle compartment is provided so as to project beyond the top surface 7a of the rear seat 7. 1 and 17 are provided with a low-frequency speaker unit 2 and a mid-high frequency speaker unit 3, low-frequency ducts 9 and 18 in front of the low-frequency speaker unit 2, and the mid-high frequency speaker unit. Formed on the front surface of 3 are horn-shaped ducts 10 and 19 for mid-high range, and further formed thin ducts 11 and 21 in which the respective ducts 9, 10, 18 and 19 are joined, and the thin mold Are configured to have openings 4 and 22 at the other ends of the ducts 11 and 21, respectively. A part of the rear tray 5 is configured by a part of the cabinets 1 and 17, and a side of the cabinets 1 and 17 is formed. Person The elongated openings 4 and 22 are located on the front surface 5a of the rear tray so as to face the front of the passenger compartment. In the second invention, the rear tray 5 inside the passenger compartment is located above the top surface 7a of the rear seat 7. Cabinets 13 and 17 of the speaker device, which are provided in a protruding manner, are provided with a low-frequency speaker unit 2 and a mid-high frequency speaker unit 3, and a low-frequency duct 9 is provided in front of the low-frequency speaker unit 2. , 18 and a horn-shaped duct for mid-high range 10 and 19 formed on the front surface of the speaker unit for mid-high range 3, and a thin duct 11 in which the respective ducts 9, 10, 18, 19 join. 21 and also has openings 4 and 22 at the other ends of the thin ducts 11 and 21. The cabinets 13 and 17 are located inside the rear tray 14. The cabinets 13 and 17 are provided with the openings 4 and 22 which are elongated in the lateral direction and are exposed to the space inside the vehicle through the elongated holes 15 which are provided in the front surface of the rear tray 14 in the lateral direction. This is characterized.

As a modification of the in-vehicle speaker device in the first and second inventions, the ducts 9 and 18 formed on the front surface of the low frequency speaker unit 3 are formed in a horn shape. Alternatively, the thin ducts 11 and 21 are formed in a horn shape.

[0007]

[Action]

 In the in-vehicle speaker device having such a structure, due to the structure of the cabinet, a duct is formed on the front surface of the low-frequency speaker unit, and a horn-shaped duct is also formed on the front surface of the mid-high frequency speaker unit. Therefore, it is possible to obtain a speaker device having good bass characteristics, high sound pressure level in the middle and high frequencies, and high sound quality.

Here, in general, when a horn-shaped duct is formed on the front surface of the speaker unit, when the speaker is a low-frequency speaker, this duct is used in order to reproduce a sufficiently low frequency. The cut-off frequency must be reduced by increasing the opening area of the opening of the duct, and the opening area of the duct opening must be increased to improve the connection with the low-frequency speaker even in the case of a speaker for the middle and high frequencies. It is necessary to increase it to lower the cutoff frequency. Therefore, generally, in a speaker device in which ducts are formed in front of the low-frequency speaker and the mid- and high-frequency speakers, and at least one of the ducts has a horn shape, the opening portion of each of the ducts is different from each other. Since it is formed by the opening, the speaker device itself has a very large opening. However, in the cabinet of the speaker device of the present invention, the respective ducts are merged into a common duct to share the duct, and the common duct has an opening, so that the low-frequency speaker and the mid-high frequency speaker are respectively separated. The duct will also share the opening, and this cabinet can have only one opening. Therefore, in the speaker device cabinet of the present invention, the opening has an opening area required for the low-frequency speaker and the mid-high frequency speaker duct, but its size is the same as that of the general speaker device described above. Can be smaller than the opening. As a result, the common duct of the cabinet itself can be made thin and its opening can be made thin without increasing the width of the cabinet.

Further, such a cabinet is configured integrally with the rear tray so that a part thereof forms a part of a rear tray that is provided so as to project from the top surface of the rear seat. , The opening is located on the front of the rear tray and is arranged so as to face the front of the passenger compartment.In the case of an on-vehicle speaker device, the opening of the duct is thin and long in the lateral direction, so the protrusion of the rear tray needs to be almost high. As a result, the driver of the car can see only a small amount of the front of the rear tray and the thin opening of the cabinet when looking backwards, and the speaker device does not obstruct the rear view.

Further, the cabinet is arranged inside a rear tray that is provided so as to project from the top surface of the rear seat, and the opening of the cabinet is inserted through a hole provided in the front surface of the rear tray to the vehicle. Even in an in-vehicle speaker device that faces an indoor space, since the opening of the duct is long and thin in the horizontal direction, the hole in the front of the rear tray is also long and thin in the same direction as the opening of the duct. It can be made thin, and it does not make the protrusion of the rear tray high, and it does not obstruct the driver's visual field when looking backwards, as described above.

As described above, the in-vehicle speaker device of the present invention has excellent safety in that it does not hinder the driver's rear view, and further, this speaker device is used in a simple interior car. However, because the cabinet is almost hidden and the speaker device has a thin opening, it is not very noticeable, which is an excellent design.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail. 1 is a side sectional view of a vehicle-mounted speaker device according to the first embodiment, FIG. 2 is a perspective view of the vehicle-mounted speaker device according to the first embodiment, and FIGS. 3 and 4 show a cabinet used in the first embodiment. 3 is a side sectional view, and FIG. 4 is an exploded perspective view seen from the bottom. 5 is a side sectional view of the in-vehicle speaker device of the second embodiment, FIG. 6 and FIG. 7 are views of a cabinet used in the in-vehicle speaker device of the modified example of the second embodiment, and FIG. Figures and 7 are exploded perspective views from the bottom. 1 to 7, 1 is a cabinet, 1a is a top surface, 1b is a bottom plate, 2 is a low-frequency speaker unit, 3 is a mid-high frequency speaker unit, 4 is an opening, 5 is a rear tray, and 5a is a rear tray front surface. , 6 is a mounting portion, 7 is a rear seat, 7a is a rear seat top surface, 8 is a rear window, 9 is a low frequency duct, 10 is a mid-high frequency duct, 11 is a duct, 12 is a partition plate, 13 is a cabinet, Reference numeral 14 is a rear tray, 15 is a hole, 16 is a mounting portion, 17 is a cabinet, 17a is a bottom plate, 18 is a low frequency duct, 19 is a mid-high frequency duct, 20 is a mid-high frequency duct opening, 21 is a duct, 22 Is an opening.

As shown in FIGS. 3 and 4, the cabinet 1 of the vehicle-mounted speaker device according to the first embodiment includes a low-frequency speaker unit 2 and a mid-high frequency speaker unit 3. A low-frequency duct 9 is formed on the front surface of the low-frequency speaker unit 2, and one surface of the wall surface of the low-frequency duct 9 is used to front the mid-high frequency speaker unit 3 on the front surface thereof. 10 are formed. Here, the interior of the mid-high range duct 10 is partitioned by a partition plate 12, so that the duct at the front of the mid-high range speaker unit 3 has a gradually changing cross-sectional area due to its varying width. It is shaped like a horn so that it becomes larger. Further, the cabinet 1 has a thin and thin shape in the lateral direction in which the wall surfaces of the ducts 9 and 10 facing the wall surfaces of the low-frequency duct 9 and the mid-high frequency duct 10 which are shared by each other are extended. The duct 11 is formed, and the other end of the duct 11 is open to the external space. Therefore, in this cabinet 1, the low-frequency duct 9 and the mid-high frequency duct 10, which were divided by the shared wall surface, are joined to the thin duct 11, and the duct 11 is thin and thin in the lateral direction. The opening portion 4 of the above guides to the external space. In other words, the cabinet 1 is configured such that the low-frequency duct and the mid-high frequency duct share the duct from the middle, so that the respective openings are also shared.

The vehicle-mounted speaker device of the first embodiment uses such a cabinet 1 and is configured as shown in FIGS. In the vehicle-mounted speaker device of the first embodiment, the rear tray 5 arranged behind the rear sheet 7 is provided so as to project from the rear seat top surface 7a. The rear tray 5 is partially configured by the top surface portion 1a of the cabinet 1 and the opening portion 4 described above. To explain this structure in more detail, the top surface portion 1a of the cabinet 1 is flush with the rear tray 5, and the opening 4 is flush with the rear tray front surface 5a. This cabinet 1 is installed on the rear tray 5 by attaching the bottom surface of the thin duct portion 11 to the attachment portion 6 formed on the extension surface from the rear seat top surface 7a to the rear seat 7 rear side. .. It should be noted that two cabinets 1 are installed on the surface of the rear tray 5, and the installation locations are the left and right positions of the rear tray 5. The above is the description of the structure of the in-vehicle speaker device of the first embodiment.

In such a vehicle-mounted speaker device of the first embodiment, due to its structure, the protruding height of the rear tray 5 is the same as the height of the opening portion 4 of the cabinet 1, and the opening portion 4 is laterally arranged. Since it is long and thin, the height of the rear tray 5 protruding is reduced accordingly. Therefore, in such a vehicle-mounted speaker device, when the driver checks backward, the speaker device hardly interferes with the rear view.

Explaining the vehicle-mounted speaker device of the second embodiment, the structure of the cabinet 13 used in this is a modification of the cabinet 1 of the first embodiment. The front duct of the low frequency speaker unit 2 is also made into a horn shape by partitioning with a partition plate. The cabinet 13 is used, and the vehicle-mounted speaker device of the second embodiment is configured as shown in FIG. In the vehicle-mounted speaker device of the second embodiment, the rear tray 14 arranged behind the rear seat 7 is provided so as to project from the rear seat top surface 7a. The cabinet 13 is arranged inside the rear tray 14, and the cabinet 13 is mounted on the lower surface of the rear tray 14 and the mounting portion 16 formed on the extension surface of the rear seat top surface 7a to the rear of the rear seat 7. Has been. Two cabinets 13 are installed in the rear tray 14, and the installation locations are the left and right positions of the rear tray 14. The rear tray 14 is provided with two laterally elongated holes 15 on the front surface thereof, and the openings of the cabinet 13 face the space in the vehicle interior through the holes 15, respectively. Here, the shape of the hole 15 is the same as the shape of the opening of the cabinet 13.

Next, an explanation will be given of a vehicle-mounted speaker device which is a modified example of the second embodiment, which is an implementation of the vehicle-mounted speaker device of the above-mentioned second embodiment while changing the structure of the cabinet. The cabinet 17 used in the modified example is configured as shown in FIGS. 6 and 7, the cabinet 17 includes the low-frequency speaker unit 2 and the mid-high frequency speaker unit 3 on the same wall surface. A low-frequency duct 18 and a mid-high frequency duct 19 are formed on the front surfaces of the low-frequency speaker unit 2 and the mid-high frequency speaker unit 3, respectively. The mid-high frequency duct 19 is located inside the low-frequency duct 18. It is arranged. Here, the mid-high range duct 19 is formed up to the other end of the low-range duct 18, and its shape is a horn shape in which the cross-sectional area gradually increases as the width changes. On the front surface of the low-frequency duct 18, a thin and thin duct 21 is formed in the lateral direction, and the low-frequency duct 18 opens into this duct 21. At the same time, the mid-high frequency duct 19 also has a medium-high frequency. The area duct opening 20 opens into the duct 21. In addition, the duct 21 is also opened to the external space by a thin and thin opening 22 which is elongated in the lateral direction. For this reason, in this cabinet 17, the ducts that have been divided by providing the mid-high range duct 19 inside the low-range duct 18 are joined to the thin duct 21, and the duct 21 extends in the lateral direction. It is designed to be guided to the external space by the elongated thin opening 22. In other words, the cabinet 17 is also configured such that the duct for the low frequency range and the duct for the middle and high frequency ranges share the duct from the middle, thereby sharing the respective openings. Then, in the vehicle-mounted speaker device of the modified example in which the cabinet 17 is used, the cabinets 17 are arranged inside the rear tray 14 one by one on the left and right, as in the case of the second embodiment. The cabinet 22 is attached to the lower surface of the rear tray 14, and the openings 22 of the cabinet 17 face the space in the vehicle compartment through the laterally elongated holes 15 provided in the rear tray 14, respectively.

In the vehicle-mounted speaker device according to the second embodiment and the modification thereof, the protruding height of the rear tray 14 is determined by the height of the openings of the cabinets 13 and 17 due to its structure. Since this opening is elongated in the lateral direction and is quite thin, the protruding height of the rear tray 14 is accordingly reduced. Therefore, in the vehicle-mounted speaker device according to the second embodiment and the modification thereof, as in the first embodiment, the rear visual field of the driver is hardly obstructed.

Further, FIG. 8 shows a frequency characteristic diagram of the vehicle-mounted speaker device of the first embodiment. As shown in FIG. 8, the in-vehicle speaker device of Example 1 has a wide bass reproduction band and a high sound pressure level in the low range because the duct is formed in the front of the low-frequency speaker unit. Since a horn-shaped duct was formed in front of the speaker unit for the range, the sound pressure level in the mid-high range was also high. Since these ducts share an opening to increase the area that each duct can take, the cut-off frequency of the mid-high range speaker due to the horn-shaped duct is lowered, and the vehicle-mounted speaker device of the first embodiment. Has a good connection between the low range and the mid-high range.

The in-vehicle speaker device according to the present invention has been described above in detail based on an example considered to be typical. However, an embodiment of the in-vehicle speaker device according to the present invention is, for example, that the duct of the cabinet is a rear tray. It may be bent so that the internal space is not restricted, and the duct shared by the low-frequency duct and the mid-high frequency duct may also be horn-shaped. The projecting height and the position of the opening or the hole in the front of the rear tray that accompanies it may also be slightly changed according to the height of the rear seat, etc. as long as it does not hinder the driver's rear view. The present invention is not limited to the structure of the embodiment, and has the constituent requirements described in the above-mentioned utility model registration claim, exerts the function of the present invention, and has the effects described below. Insofar as it can be modified appropriately.

[0021]

【effect】

 The in-vehicle speaker device according to the present invention has the following effects. (1) Due to the structure of the cabinet, a low-frequency speaker unit has a duct or horn-shaped duct formed in front of it to improve bass characteristics, and a horn-shaped duct is also formed in front of the mid-high range speaker unit. As a result, the sound pressure level in the mid- and high-range increases, and because the opening area of the opening shared by these ducts is increased, the connection between the low-range speaker and the mid- and high-range speakers is improved, which results in a high-quality speaker. The device was obtained. (2) Since the ducts of the low-frequency speaker unit and the mid-high frequency speaker unit share the opening, each duct has a large opening area, but the opening of the cabinet itself has a large width. It has become possible to make it thin and thin in the lateral direction. This opening is located on the front of the rear tray, and the height of this opening determines the height of the rear tray protruding from the top surface of the rear seat.Therefore, the protruding portion of the rear tray does not become too high. It was As a result, with this on-vehicle speaker device, when the driver of the vehicle checks backward, the speaker device does not obstruct the rear view. As described above, this in-vehicle speaker device has excellent safety. (3) This on-vehicle speaker device has a cabinet placed in the rear tray, the height of the rear tray protruding is not very high, and the speaker device has a thin opening, so it is used in vehicles with a simple interior. However, this speaker device is excellent in terms of design without breaking the design of the interior.

[Brief description of drawings]

FIG. 1 is a side sectional view of an in-vehicle speaker device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the vehicle-mounted speaker device according to the first embodiment.

FIG. 3 is a side sectional view of a cabinet used in the in-vehicle speaker device of the first embodiment.

FIG. 4 is an exploded perspective view of the cabinet viewed from the bottom.

FIG. 5 is a side sectional view of an in-vehicle speaker device according to a second embodiment of the present invention.

FIG. 6 is a side sectional view of a cabinet used in a vehicle-mounted speaker device according to a modification of the second embodiment.

FIG. 7 is an exploded perspective view of the cabinet viewed from the bottom.

FIG. 8 is a frequency characteristic diagram of the in-vehicle speaker device according to the first embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet 1a Top part 1b Bottom plate 2 Low range speaker unit 3 Mid-high range speaker unit 4 Opening part 5 Rear tray 5a Rear tray front 6 Mounting part 7 Rear seat 7a Rear seat top surface 8 Rear window 9 Low range duct 10 Mid-high range duct 11 duct 12 partition plate 13 cabinet 14 rear tray 15 hole 16 mounting part 17 cabinet 17a bottom plate 18 low-frequency duct 19 mid-high range duct 20 mid-high range duct opening 21 duct 22 opening

Claims (4)

[Scope of utility model registration request] 1. A speaker device installed on a rear tray in a vehicle compartment, wherein the rear tray (5) is provided so as to protrude from a top surface (7a) of a rear seat (7), and a cabinet (1) of the speaker device is provided. , 17) includes a low-frequency speaker unit (2) and a mid-high frequency speaker unit (3), and the low-frequency speaker unit (2).
A low-frequency duct (9, 18) on the front side of the speaker, and a horn-shaped mid-high frequency duct (10, 19) on the front of the mid-high frequency speaker unit (3). 10, 18, 19) form a thin duct (11, 21) where the thin duct (11, 21) merges.
21) is configured to have an opening (4, 22) at the other end thereof, and a part of the cabinet (1, 17) constitutes a part of the rear tray (5). The in-vehicle speaker device is characterized in that the openings (4, 22) of (17) are located on the front surface (5a) of the rear tray so as to face the front of the passenger compartment. 2. A speaker device installed in a rear tray in a vehicle compartment, wherein the rear tray (5) is provided so as to protrude from a top surface (7a) of a rear seat (7), and a cabinet (13) of the speaker device is provided. , 17)
A low-frequency speaker unit (2) and a mid-high frequency speaker unit (3) are provided, a low-frequency duct (9, 18) is provided in front of the low-frequency speaker unit (2), and the mid-high frequency speaker unit Formed in the front of (3) is a horn-shaped mid-high range duct (10, 19), and further, a thin duct (11, 21) where the respective ducts (9, 10, 18, 19) join. And the thin duct (1
1, 21) is configured to have an opening (4, 22) at the other end thereof, and this cabinet (13, 17) is arranged inside the rear tray (14). The vehicle-mounted speaker device, wherein the openings (4, 22) of (1) are exposed to the space inside the vehicle compartment through holes (15) provided in the front surface of the rear tray (14). 3. The low-frequency duct (9, 18) formed on the front surface of the low-frequency speaker unit (3) is formed in a horn shape.
The in-vehicle speaker device described. 4. The vehicle-mounted speaker device according to claim 1, wherein the thin ducts (11, 21) are formed in a horn shape.