JP2853120B2 - Speaker system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker system in which a speaker unit having no driver is arranged on the back side of a speaker cabinet. 2. Description of the Related Art Generally, a speaker unit having no driver, for example, a speaker system having a drone cone, is often arranged together with a speaker unit having a driver mounted in a sealed structure on the front side of a speaker cabinet. In this case, the speaker cabinet cannot be reduced in size due to the necessity of disposing the drone cone on the front side. For this reason, in recent years, a speaker unit having a driver has been arranged in a sealed structure on the front side of a speaker cabinet, and a drone cone as a speaker unit without a driver has been arranged on the rear side of the speaker cabinet. Attempts have been made to reduce the size. In this case, the drone cone disposed on the rear side of the speaker cabinet is protected by the speaker grill, similarly to the speaker unit having the driver disposed on the front side of the speaker cabinet. Problems to be Solved by the Invention However, in the conventional device, since the speaker grill provided on the back of the speaker cabinet is of a flat plate shape, when the speaker cabinet is arranged in a bay window, a chest or the like, the speaker cabinet is not provided. The back surface abuts against the wall surface, so that sound emission from the drone cone is interrupted, and there is a disadvantage that a rich low-temperature feeling cannot be obtained. The present invention solves such a conventional drawback, and even when arranged in a bay window, a chest or the like, sound emission from a speaker unit having no driver arranged on the back of the speaker cabinet is not interrupted. It is an object of the present invention to provide a speaker system capable of reproducing rich bass feeling. Means for Solving the Problems In order to achieve the above object, a speaker system according to the present invention is provided on a rear outer surface of a speaker cabinet in which a speaker unit having no driver is arranged, so as to protect the speaker unit. The cover having a U-shaped cross section having a predetermined projecting height from the speaker cabinet, and having a sound emission hole all around the surface facing the back surface of the speaker cabinet and the surface holding the predetermined projecting height. Characterized in that the speaker unit is mounted from the outside of the speaker unit without the same with the same screw. Operation The present invention has the above-described configuration, and in the case where the speaker cabinet is arranged in a bay window, a chest or the like and the back surface thereof abuts against a wall surface, only the back surface of the cover having the U-shaped cross section abuts on the wall surface, and the surrounding area is not surrounded. The provided sound emission hole is not blocked by the wall surface. Therefore, the sound emission from the speaker unit having no driver is emitted without being interrupted from the sound emission holes around the cover having the U-shaped cross section, and a rich bass sound is reproduced. Embodiment Hereinafter, a speaker system of the present invention will be described with reference to the drawings of the embodiment. 1 to 3 show an embodiment of the present invention. Fig. 1 ~
In FIG. 3, reference numeral 1 denotes a wooden speaker cabinet, and a front panel 2 made of plastic is attached to the front of the speaker cabinet by wood screws 3. A speaker unit 4 for a woofer is fixed to the front panel 2 from its inner surface by screws (not shown), and a speaker unit 5 for a tweeter is fixed from its outer surface by screws (not shown). A jetty 6 is projected from the inner surface of the front panel 2 so as to cover a mounting position of the speaker unit for the woofer, and a tip of the jetty 6 is a sealing bush made of an elastic body provided on a front surface of the speaker cabinet 1. 7
, The woofer speaker unit 4 is mounted in the speaker cabinet 1 in a sealed structure. Here, by attaching the front panel 2 to the front surface of the speaker cabinet 1 with the wood screws 3, the tip of the jetty 6 is pressed against the closed bush 7. Reference numeral 8 denotes a drone cone disposed on the back of the speaker cabinet 1, and reference numeral 9 denotes a cover for protecting the drone cone 8. The drone cone 8 is attached to the back of the speaker cabinet 1 with a wood screw 10 together with the cover 9. The cover 9 has a substantially U-shaped cross section. The cover 9 has a sound emission hole 9a on a peripheral wall thereof, and also has a sound emission hole 9b on a wall surface facing the drone cone 8. Reference numeral 11 denotes a speaker terminal mounted on the back of the speaker cabinet 1, and although not shown, a speaker unit 4 for a woofer in the speaker cabinet 1.
It is connected to the. Here, the cover 9 having a U-shaped cross section is used.
Of the speaker terminal 11 from the rear outer surface of the speaker cabinet 1 is equal to the height of the speaker terminal 11 projecting from the rear outer surface of the speaker cabinet 1. Reference numeral 12 denotes a speaker grill which is detachable from the front panel 2, and reference numeral 13 denotes a connection line between the speaker units 4 and 5. In such a configuration, when the speaker cabinet 1 is arranged in a bay window, a chest, or the like, and the rear surface thereof is in contact with the wall surface, the wall surface having the sound emission holes 9b of the cover 9 and the speaker terminal 11 are formed in the bay window glass, the chest rear wall. The cover 9 has a substantially U-shaped cross section and has a predetermined protruding height, so that a gap is formed between the cover glass and the bay window glass, the rear wall of the chest, and the like, and the cover 9 is provided on the peripheral wall of the cover 9. The sound output hole 9a is not blocked. Therefore, the sound emitted from the drone cone 8 provided on the back surface of the speaker cabinet 1 is emitted to the outside for reproduction of rich low-pitched sound without being interrupted. In the above embodiment, the protrusion height of the speaker terminal 11 provided on the back surface of the speaker cabinet 1 is equal to the protrusion height of the cover 9, but it should be lower than the protrusion height of the cover 9. Thereby, when the back of the speaker system collides with the window glass, the chest rear wall, or the like, damage to the window glass or damage to the speaker terminal itself can be minimized. Effects of the Invention As described above, according to the present invention, the speaker cabinet has a U-shaped cross section so as to protect a speaker unit having no driver disposed on the rear side of the speaker cabinet on the rear outer surface of the speaker cabinet. Since a cover with sound emission holes was attached to the surface corresponding to the back and the entire periphery of the surrounding wall, even if there was a barrier such as a bay window glass, chest back wall, etc. on the back side of the speaker cabinet, it was specified between the barrier and the barrier. A gap can be ensured, and the sound emission hole can be constantly emitted from the back of the speaker cabinet to the outside. Therefore, it is possible to realize a speaker system that performs rich low-temperature sensation reproduction without interrupting sound emission from the back of the speaker cabinet. In addition, since the cover having a U-shaped cross section is attached to the outer surface of the rear surface of the speaker cabinet with the same screws together with the speaker unit having no driver, there is a feature that the number of parts and the number of operations are not increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear view showing an embodiment of the speaker system of the present invention, FIG. 2 is an enlarged sectional view of the speaker system, FIG.
The figure is an enlarged sectional view of a main part of the speaker system. 1. Speaker cabinet, 4. Speaker unit for woofer, 8. Drone cone, 9 Cover.

Claims (1)

(57) [Claims] A speaker system in which a speaker unit A having a driver mounted in a sealed structure is disposed on a front side of a speaker cabinet, and a speaker unit B having no driver is disposed on a rear side of the speaker cabinet. The rear outer surface has a predetermined protruding height from the rear outer surface so as to protect the speaker unit B, and surrounds a surface facing the rear surface of the speaker cabinet and a surface holding the predetermined protruding height all around. A speaker system, wherein a cover having a U-shaped cross section having a sound emission hole is attached from the outside of the speaker unit B with the same screw. 2. The projecting height of the U-shaped cross section of the cover from the rear outer surface of the speaker cabinet is larger than the projecting height of the speaker terminal provided on the rear surface of the speaker cabinet from the rear outer surface. The speaker system according to claim 1.