JPH0453397A - Back load horn type speaker unit - Google Patents

Abstract

PURPOSE:To easily maintain the efficiency and a powerful sound of a low sound frequency signal by allowing a sound coming from a front face of a speaker unit to radiate directly and reproducing a sound going to back side through a lone horn. CONSTITUTION:One end of a pipe 3 faces a rear part of a speaker 1 provided to a rectangular front face plate 5, the other end of the pipe 3 is directed to the front side of the speaker 1 and the diameter of the pipe 3 is made spread from the one end to the other end. Thus, the sound coming from the front side of the speaker 1 radiates directly and the sound going to the rear side is reproduced through the pipe 3. Thus, the efficiency and a powerful sound of a low sound frequency signal of the back load horn type speaker unit are easily maintained simultaneously.

Description

[Detailed Description of the Invention] [Industrial Application Field] The invention of this application relates to a speaker unit, particularly a backload horn type speaker unit 1-.
The sound emitted from the front of the speaker unit is radiated directly, while the sound emitted from the rear is reproduced through a long horn to increase efficiency and the sense of volume in the bass range.

[Conventional technology]

Examples of this type of speaker unit include those shown in FIGS. 3 and 4.

This device is formed as a box as a whole, and as shown in the same figure, a speaker (1) is provided at the upper front of the device and a horn (2) is formed inside. This bone (2) is constructed in such a manner that a plate material is installed between both side walls of the box body, one end of which communicates with the speaker (1), and the other end of which is opened at the bottom of the speaker (1). It's Nishide.

The horn (2) is set to gradually widen from the speaker (1) toward the open end.

Therefore, the sound emitted from the front of the speaker (1) is directly radiated, and the sound emitted from the rear is reproduced through the horn (2), thereby increasing the efficiency and the volume of the bass range.

However, with the above-mentioned type, there are problems in that it is not easy to manufacture the entire unit, and the exclusive space of the units I~ is large.

[Problem to be solved by the invention]

Therefore, the invention of this application aims to provide a hack load bone type speaker unit that is easy to manufacture as a whole while maintaining efficiency and a sense of volume in the bass range, and also to free up the exclusive space of the unit when not in use. An object of the present invention is to provide a bank load horn type speaker unit that can be made small.

[Means to try to solve the problem]

The invention according to claim 1 of this application relates to a hackroad bone type speaker unit, in which a speaker (1) is provided on a front plate, and a pipe (3) is provided at the rear of the speaker (1).
) is faced, the other end of the pipe (3) is directed toward the front side of the speaker (1), and the diameter of the pipe (3) increases from one end toward the other end, as claimed in claim 2. The described invention includes a speaker (1) provided on a front plate, a pipe (3) arranged on the rear side of the front plate, and one end of the pipe (3) facing the rear of the speaker (1). The other end is opened from the opening of the front plate, and the pipe (3
) expands in diameter from the speaker (1) toward the open side.

Also 1. In the invention set forth in claim 3, regarding the invention set forth in claim 2, the speaker (1) is disposed at an upper part of the front plate, and the other end position of the pipe (3) is located below the speaker (1). .

Furthermore, in the invention set forth in claim 4, regarding the invention set forth in claim 2 or 3, the speaker (1) is surrounded by an enclosure (4) provided at the rear of the front plate, and a pipe ( 3) One end is attached.

In the invention according to claim 5, the above-mentioned claims 1 to 4
Regarding the invention described in any one of the above, the pipe (3) is constituted by a bellows.

Further, in the invention set forth in claim 6, regarding the invention set forth in any one of claims 1 to 5, the pipe (3) is detachably attached to the front plate.

[Effect]

The invention of this application has the following effects.

(Action of the invention according to any one of claims 1 to 3) In this device, the sound emitted from the front of the speaker (1) is directly radiated, and the sound emitted from the rear is reproduced through the pipe (3). .

This product can be manufactured by simply attaching the pipe (3) to the front plate, and the pipe functions as a conventional horn.

(Operation of the invention according to claim 4) Since the front plate is provided with the enclosure (4), two kinds of sound waves having opposite phases are mutually blocked, and mutual cancellation of the sound waves is eliminated.

(Action of the invention according to claim 5) While the pipe (3) itself can be freely deformed, the pipe (3)
) can be easily attached to the front plate.

(Action of the invention as claimed in claim 6) When the pipe (3) is attached, it has the function as the speaker unit 1~ like the conventional one, and the pipe (3)
3) When removed, it becomes thinner.

[Example] Hereinafter, the structure of the invention of this application will be described with reference to drawings showing one example.

As shown in FIG. 1, the hackroad horn type speaker unit of this embodiment has circular upper and lower openings (50) and (51) provided in a rectangular front plate (5).
Speaker (1) is attached to part 0). An enclosure (4) is disposed on the front plate (5) to surround the speaker (1), thereby blocking two kinds of sound waves having opposite phases from each other, eliminating mutual cancellation of the sound waves, and producing low-frequency sound. I'm trying to make it grow.

Further, in this device, a pipe (3) formed by a bellows is provided on the rear side of the front plate (5) described above, and one end of this pipe (3) is connected to the enclosure (4), and the other end is connected to the enclosure (4). The end is attached so as to be open to the front side of the front plate (5) using the above-mentioned lower opening (51).

Since this Huckroad horn type speaker unit is configured as described above, the sound emitted from the front of the speaker (1) is directly radiated, and the sound emitted from the rear is reproduced through the pipe (3). Therefore, efficiency and the volume of the bass range are maintained. That is, the sound emitted from the speaker (1) toward the rear side is radiated forward along the path of the enclosure (4) → the pipe (3) → the lower opening (51).

In this embodiment, the pipe (3) is attached to the front plate (5) via the enclosure (4), but the pipe (3) may be attached directly to the front plate (5). .

Further, in the above embodiment, the pipe (3) is fixedly attached to the enclosure (4), but the attachment is not limited to this, and a known clamp may be used to attach and detach the pipe (3) to the enclosure (4). .

Further, in the above embodiment, the pipe (3) is formed of a bellows, but it may be formed of a normal hard pipe.

Then, one end of the pipe (3) may face the rear of the speaker (1), and the other end may be free without being attached to the front plate (5). [Effect of the Invention] The invention of this application , having the configuration as described above, has the following effects.

(Effects of the invention according to any one of claims 1 to 3) In this device, the sound emitted in front of the speaker (1) is directly radiated, and the sound emitted in the rear is reproduced through the pipe (3). As a result, it maintains the same efficiency and bass volume as conventional back-loaded horn-type speaker units.

Since this product can be manufactured by simply attaching the pipe (3) to the front plate, the entire unit can be manufactured very easily.

(Effect of the invention according to claim 4) Since the front plate is provided with the enclosure (4), two kinds of sound waves with opposite phases are blocked from each other, and there is no mutual cancellation of sound waves, so that the bass sound is extended. That will happen.

(Effects of the invention according to claim 5) Since the pipe (3) can be easily attached to the front plate, manufacturing is further facilitated compared to those according to claims 1 and 2.

(Effect of the invention as set forth in claim 6) When the pipe (3) is removed, the pipe (3) becomes thin, so the space occupied by the pipe (3) becomes small, and it can be stored in a small space when not in use.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a Hackroad horn type speaker unit according to the invention of this application. FIG. 2 is a front view of the backload horn type speaker unit. FIG. 3 is a side cross-sectional view of a conventional hackroad horn type speaker unit. FIG. 4 is a front view of a conventional hackroad horn type speaker unit. In the diagram, (1)...Speaker (3)...Pipe (4)
・・Enclosure

Claims (5)

[Claims] 1. A speaker (1) is provided on the front panel, one end of a pipe (3) is made to face the rear of the speaker (1), and the other end of the pipe (3) is directed to the front side of the speaker (1). A back-loaded horn type speaker unit featuring: 2. A speaker (1) is provided on the front plate, and a pipe (3) is provided on the rear side of the front plate, and the pipe (3)
One end faces the rear of the speaker (1), and the other end is opened from the opening of the front plate, and the pipe (3) expands in diameter from the speaker (1) toward the open side. Backloaded horn type speaker unit. 3. 3. A back-loaded horn type speaker unit according to claim 2, wherein the speaker (1) is disposed at an upper part of the front plate, and the other end of the pipe (3) is located below the speaker (1). 4. The speaker (1) is surrounded by an enclosure (4) provided at the rear of the front panel, and this enclosure (
4. The backload horn type speaker unit according to claim 1, wherein one end of the pipe (3) is attached to the backload horn type speaker unit. 5. 5. A backload horn type speaker unit according to claim 1, wherein the pipe (3) is constructed of a bellows. 6. A backload horn type speaker unit according to any one of claims 1 to 5, characterized in that the pipe (3) is detachably attached to the front plate.