JPH0635592Y2 - Speaker device - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a speaker device, and particularly to a television (TV).
The present invention relates to a speaker device which can be compactly combined with a receiver and which is capable of obtaining excellent bass reproduction.

(B) Conventional technology In recent years, the spread of stereo broadcasting in TV broadcasting and hi-fi
Against the backdrop of the widespread use of VTRs, video discs, etc. and the related enhancement of video software for movies, music, etc., we aimed to improve the sound quality of TV receivers, and especially in conventional TV receivers, it is regarded as very important. Attempts have been made to emphasize the low-pitched (heavy bass) reproduction that had not been done and to obtain a rich sense of presence.

By the way, as a means for designing a sound quality that particularly emphasizes reproduction of low-pitched sound in a stereo device, etc.
As described in Japanese Patent Publication No. 84 (H04R3 / 14), etc.,
As shown in the figure, the R signal given to the terminal (1) and the L signal given to the terminal (2) are fed to the channel divider (3).
To the R signal in the mid-high range,
It is supplied to the right speaker (5) through the signal dedicated amplifier (4), and the mid-high range L signal is the mid-high range L signal dedicated amplifier (6).
There is a so-called 3D stereo reproduction system in which the monaural signal in the low frequency range is supplied to the left speaker (7) via the, and the low range monaural signal is supplied to the low frequency speaker (9) via the low frequency amplifier (8).

To install a speaker system including heavy bass reproduction in a relatively limited space like a TV receiver,
The 3D system is a very effective means from the viewpoint that the space can be significantly reduced, and an example of a conventional TV receiver incorporating such a 3D system speaker system is shown in FIGS. 7 and 8.

In the conventional example shown in FIG. 7, a large-diameter speaker (10) for bass reproduction is used.
Speaker box (1 located under the TV receiver body (13)
1) Other left and right mid-high range reproduction speakers (12) (12)
In the conventional example shown in FIG. 8, the low frequency reproduction speaker (14) is attached to one corner of a box-shaped horn (16) arranged below the TV receiver body (15). However, in order to achieve good bass sound in any of these methods, it is inevitable to increase the diameter of the speaker and increase the internal volume of the speaker box, especially in the case of the former TV receiver. The volume of the entire receiver was inevitably large.

(C) Problems to be solved by the present invention The present invention has been made in view of the above points, and when combined with a TV receiver, heavy bass can be reproduced without inviting an increase in the size of the TV receiver. It is intended to provide a speaker device.

(D) Means for Solving the Problem In the speaker device of the present invention, a bass reproduction speaker is provided at one end of a box body formed by bending a long tubular body at a plurality of places and the other end is opened. Or a configuration in which a drone cone is arranged.

(E) Action With the above configuration, the speaker device for heavy bass reproduction can be downsized.

(F) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows an external perspective view of a TV receiver embodying the present invention. (17) is a TV receiver body, (18) is a speaker device, and the speaker device (18) has a rectangular cross section. The long tubular body (19) is bent into a U-shape to form a speaker box (27), and the cylindrical support bodies (20) (21) are provided at both ends and corners of the long tubular body (19). ) (22) (23) are integrally provided. A slit-shaped sound emission hole (24) is provided on the peripheral surface of the support (20) (21), and a speaker (2) for exclusive use of 3D type deep bass sound reproduction is provided in the one support (20).
5) is arranged as shown in the sectional view of FIG. 3 or FIG.

In the case of FIG. 3, the speaker (25) is arranged so that its cone surface faces the bottom surface of the support (23), and in the case of FIG. 4, the speaker (25) has a cone surface whose cylindrical surface ( It is arranged so as to face the corner of the long tubular body (19) provided with 23). Further, nothing is provided in the other support (21) and it is in an open state, or a drone cone (26) is provided for the purpose of phase correction.

The resonance frequency o of the speaker box (27) is approximately given as o = Vs / 4L (where Vs is the speed of sound) when the total length is (L).

Experimentally, the cross section is a square with a side of about 5 cm, and the total length (L) is
When a long cylindrical body of about 1.3 m was made and a small bass reproduction speaker unit with a diameter of 8 cm and a drone cone were used, very good bass could be reproduced.

The first embodiment of the embodiment shown in FIGS.
If it is used as the base of a TV receiver as shown in the figure, it can be combined with a TV receiver in a very compact manner.

Hereinafter, this specific embodiment will be described with reference to FIGS. 9 to 15. FIG. 9 is an external perspective view showing a case where the speaker device (40) of the present invention is used as a base. The speaker device (40) has cylindrical supports (41a) (41b) at both ends and corners.
U-shaped upper load horn half (42) having (41c) (41d) and cylindrical support (43a) at both ends and corners as well.
While bonding the U-shaped lower load horn half body (45) having (43b) (43c) (43d) to the fin base device (46) with the lower load horn half body (45). It is formed by arranging in the lower part. It should be noted that openings (44a) (44b) for deep bass sound emission are provided on the bottom surface of the cylindrical supporters (43a) (43b) of the lower load horn half body (45).

10 to 13 are views for explaining the assembly of the upper load horn half body (42) and the lower load horn half body (45), and a cylinder at one end of the upper load horn half body (42). The speaker support bosses (41a) have speaker mounting bosses (46a) (46b) (46c) (46d) and lower load horn half body pressing bosses (47a) (47b) (47c) (47d) around the supporter (41a). Cylindrical support (41b) provided at every other interval and at the other end.
Also as in the above, the boss (48a) for attaching the drone cone
(48b) (48c) (48d) and lower load horn half body pressing bosses (47a) (47b) (47c) (47d) are provided at equal intervals.

The upper load horn half body (42) configured as described above
As shown in FIG. 10 (a), the cone paper of the speaker (49) is directed upward to the cylindrical support (41a) at one end of the speaker, and holes (50a) (50b) (50c) provided in the speaker (49) are provided. ) (50d) and the cylindrical support (41a) for mounting the speaker (4)
6a), (46b), (46c), and (46d) are opposed to each other, and then screwed. Similarly, as shown in FIG. 10 (b), the cone paper of the drone cone (50) is directed upward to the cylindrical support body (41b) at the other end of the upper load horn half body (42). Holes (51a) (51b) (51 provided in (50)
c) (51d) and the drone cone mounting bosses (47a) (47b) (47c) (47d) of the cylindrical support (41a) are opposed to each other and then screwed with screws or the like.

Next, as shown in FIG. 12, a speaker connecting cord (53) to which a cord stopper (52) is attached in advance is used to pull out the cord provided on the step portion (54) of the upper load horn half body (42). Insert into the hole (55) and connect the cord (53) to the speaker (49). Further, as shown in FIG. 11, a plurality of lead wire fixing ribs (56a) (56b) (56c) are provided on the back surface of the upper load horn half body (42), and the ribs (56a) ( The cord (53) is meandered to 56b) and (56c) and temporarily fixed and fixed with an adhesive or the like. Thereafter, as shown in FIG. 12, the cord stopper (52) is press-fitted into the cord drawing hole (55), and the cord stopper (52) is sealed with an adhesive or the like to complete the attachment of the cord (52). .

The upper load horn half body (42) and the lower load horn half body (45) thus formed are bonded with an adhesive or the like as shown in FIG. 13 to complete the load horn (57).
As will be described later, a step (A) is provided between the cylindrical supporters (43a) (43b) of the lower load horn half body (45) and other portions. Also, the upper load horn half (4
2) and the lower load horn half body (45) are joined, the pressing bosses (47a) (47b) of the upper load horn half body (42)
(47c) (47d) and the screw insertion holes (58a) (58b) (58c) (58d) of the lower load horn half body (45) must be accurately overlapped.

Apart from this, the assembly of the fin base device (46) will be described with reference to FIG. FIG. 14 is an exploded perspective view of the fin base device (46), which comprises an upper fin base (59), a decorative ring (60) and a lower fin base (61). ing. There are a plurality of ribs (62) (62) along the outer periphery on one surface of the upper fin base (59), and the rib (62) has four ribs.
Screw insertion holes (63a) (63b) (63c) (63d) are provided at the locations. Therefore, there is a gap (64) between the ribs (62).
As described later, the deep bass reproduced from the gap (64) is emitted over the entire circumference. Then, an adhesive or the like is applied to the other surface of the upper fin base (59) to make a hole (65 in the decorative ring (60) made of aluminum.
a) (65b) (65c) (65d) and the upper fin base (5
9) Screw insertion holes (63a) (63b) (63c) (63
Place so that d) face each other, and fix with an adhesive.
The lower fin base (61) is also provided with screw insertion holes (66a) (66b) (66c) (66d), and the screw insertion holes (66a) (66a) (66b) (66c) (66d) s. Screw insertion hole (63) provided on the upper fin base (59) with decorative ring
Similarly, the fin base device (46) is completed by arranging a), (63b), (63c), and (63d) so as to face each other and fixing them with an adhesive or the like. On the lower surface of the lower fin base (61), four rubber feet (67) (67) (67) (67) are approximately 90.
It is attached in the relation of °.

Fin base device assembled in this way (46)
Abut the ribs (62) on the lower opening surfaces (44a) (44b) of the cylindrical support at both ends of the lower load horn half body (45), and screw them together with screws and at the corners of the cylinder. The speaker device (40) is completed by attaching the rubber feet (68) to the flat supports (43a) (43b), respectively. At this time, since the height of the fin base device (46) is set to A, when the fin base device (46) is screwed onto the lower opening surfaces (44a) (44b) of the lower load horn half body (45). , Speaker devices (40)
The bottom surface of is made flush.

(G) Effect of the Invention As described above, according to the present invention, it can be combined in a TV receiver or compactly with a TV receiver, and excellent bass can be reproduced. In addition, the upper load horn half body and the speaker are attached by a boss provided on the upper load horn half body,
Alternatively, not only can the drone cone be connected, but also the upper half of the load horn and the lower half of the load horn are firmly fixed, so that the chattering noise due to the vibration of the speaker can be prevented.

Furthermore, because the rib of the fin base abuts the lower opening surface of the lower half of the load horn, a gap is created between the bottom of the load horn and the rib, and the reproduced sound from the speaker and drone cone is effective through this gap. Can be emitted.

[Brief description of drawings]

FIG. 1 is an external perspective view of a television receiver provided with the speaker device of the present invention, FIG. 2 is an external perspective view of the speaker device of the present invention, and FIGS. 3 and 4 are main parts of FIG. FIG. 5 is a sectional view showing a different embodiment, FIG. 5 is a sectional view showing a main part of a speaker device according to still another embodiment of the present invention, and FIG.
FIG. 7 and FIG. 8 are block diagrams of a 3D type stereo reproduction apparatus, and are diagrams showing a conventional speaker apparatus. FIG. 9 is an external perspective view showing a concrete example of FIG. 3, and FIG. 10 (a).
(B) is a diagram for explaining the assembly of the upper load horn half body and the speaker or drone cone, and FIG. 11 (a).
(B) is a top view for explaining the fixing of the lead wire and an enlarged view of a main part, and FIG. 12 (A) (B) is an enlarged view of the main part for explaining the attachment of the cord stopper. FIG. 13 is an enlarged view of an essential part for explaining the assembly of the upper load horn and the lower load horn, FIG. 14 is an exploded perspective view for explaining the assembly of the fin base device, and FIG. 15 is the load horn and the fins. It is an exploded perspective view for explaining an assembly of a base device. (19) …… Long tubular body, (25) …… Bass reproduction speaker, (26) …… Dron cone, (40) …… Speaker device, (42) …… Upper load horn half, (45) ) …… Lower Rhodon half, (46) …… Fin base device, (57)…
… Road horn.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Hara, 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Koji Sato 2-18, Keihan Hondori, Moriguchi City, Osaka Sanyo Denki Incorporated (72) Inventor Akira Yoshino 2-18 Keihan-hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References Open 62-159095 (JP, U) Open 63-183769 (JP) , U)

Claims (1)

[Scope of utility model registration request] 1. A box body formed by bending a long tubular body at a plurality of places is composed of a pair of upper and lower load horn halves, and an electronic device main body is mounted on both ends of the pair of upper and lower load horn halves. A cylindrical support is formed, a bass reproduction speaker is arranged on one of the cylindrical supports, and a sound emission hole is formed or a drone cone is arranged on the other cylindrical support, A speaker device, wherein a fin base device having a plurality of ribs is provided on a lower bottom surface of the cylindrical support.