JP3082130B2 - Sound equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to audio equipment such as a radio cassette.

[0002]

2. Description of the Related Art In recent years, loudspeakers are often arranged on the top surface of audio equipment for the purpose of creating a sound field and improving the directivity of a treble section. Also, in an audio device having a plastic cabinet such as a radio cassette, a speaker is often arranged on the top surface in order to improve directivity.

Conventionally, most audio equipment having a plastic cabinet has a structure in which the cabinet can be divided into an upper cabinet and a lower cabinet, and a boss is provided in the upper cabinet to fix a speaker. Therefore, the dividing lines of the upper and lower cabinets can be seen from the front of the audio equipment, which is not preferable in terms of design. In addition, undesired portions such as sink marks generated during plastics molding are visible.

Further, in the case where a panel, operation buttons, and the like are mounted on the front of the audio equipment, in a structure in which the cabinet is divided into upper and lower cabinets, there is a problem that it is difficult to manufacture a molding die for the cabinet.

In a configuration in which a high-range speaker is arranged on the top surface and a low-range speaker is arranged on the front of the audio equipment, a mounting member for mounting the low-range speaker on the dividing line between the upper and lower cabinets is integrated with the cabinet. Cannot be configured.

Further, in order to arrange a loudspeaker for the high frequency range on the top surface of the audio equipment and a loudspeaker for the low frequency range on the front surface so that the sounds of the respective speakers do not interfere with each other, the backs of the respective speakers must be arranged. It is necessary to seal inside the cabinet.
In the structure in which the cabinet is divided into upper and lower parts, it is difficult to make the back part of the speaker a closed structure for the above-mentioned purpose.

[0007]

A conventional problem to be solved by the present invention is that, in an audio equipment having a speaker on a top surface and a speaker on a front surface, respectively, a cabinet having a two-part upper and lower configuration is preferable in terms of acoustic performance and design. Is that there is no configuration.

Accordingly, an object of the present invention is to provide a configuration in which a cabinet which is preferable in terms of acoustic performance and design can be easily assembled.

[0009]

According to a first aspect of the present invention, there is provided a cabinet formed by connecting a front cabinet and a rear cabinet, and a hole formed by opposing a notch on a dividing line on a top surface of the cabinet. , A cylindrical cover fitted in a cover insertion hole provided in the bottom of the concave, and a lid fitted in the cylindrical cover and fitted in the upper part of the hole. A top speaker,
And a front speaker provided on the front of the cabinet.

According to a second aspect of the present invention, in the first aspect of the present invention, the lid has a top surface and a side wall fitted into a hole of a cabinet, and a part of the top surface. And a part of the side wall, a through-hole is provided, and a top surface net is attached to the through-hole, and the through-hole is directed to a front direction and a side direction of the audio equipment.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a diffuser is provided between a lower portion of the lid and the top speaker.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the front speaker includes a vertical partition in the cabinet, a wall of the cabinet, and a top of the cabinet. It is configured to be arranged in a closed space formed by a side wall of a dent on a surface, a bottom surface, and a cylindrical cover fitted to the bottom surface.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the tape cassette insertion portion covers the dividing line on the top surface of the cabinet and is provided between the two lids. And an operation button.

According to a sixth aspect of the present invention, the top speaker according to any one of the first to fifth aspects is a mid-high range speaker and the front speaker is a low range speaker. Things.

[0015]

With the above arrangement, the dividing line of the cabinet is not visible from the front of the audio equipment, and the back of the top speaker is covered, and the entire top speaker is in a closed space. There is no interference with sound.

According to the second aspect of the present invention, in addition to the above operation, the sound from the top speaker is radiated in the front and side directions of the audio equipment.

Further, in the invention according to claim 3, there is an effect of diffusing the sound of the top speaker in addition to any of the above functions.

Further, in the invention according to claim 4, in addition to any of the above functions, the sound of the front speaker does not interfere with the sound of the top speaker in the audio equipment.

In addition, in addition to any of the above-mentioned functions, in the invention according to the fifth aspect, there are few dividing lines that cover the dividing line on the top surface and are visible from the upper surface.

According to the sixth aspect of the present invention, sound in the middle and high frequency ranges is radiated from the top surface of the acoustic device, and low frequency range is radiated from the front surface of the acoustic device, and the sound effect is good.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an audio equipment of a radio cassette, and a plastic cabinet 2 is formed by connecting a front cabinet 2a and a rear cabinet 2b, and a dividing line 3 is provided between the front and rear cabinets 2a and 2b. Is formed. On the front surface of the audio device 1, a front net 4 that radiates a low-frequency range to the left and right is provided. On the top surface of the audio device 1, a top surface net 5 that radiates a middle and high range to the left and right is provided. A front speaker 6 for a low frequency range is arranged in a through hole of the audio device 1 behind the front net 4, and a top speaker 7 for a middle and high range is arranged below the top net 5. A lid 9 having a side wall 8 is provided on the upper surface of the top speaker 7 provided on the top surface, and a notch 10 of the front cabinet 2 a provided at each part of the dividing line 3.
It is arranged by fitting the side wall 8 into a hole 12 formed by the notch 11 of the rear cabinet 2b. The top surface net 5 extends over a part of the upper surface of the lid 9 and a part of the side wall 8, and is provided in a formed through hole as shown in FIG. Therefore, the mid-high range from the top speaker 7 is radiated through the top net 5 in the front direction and the left and right side directions of the audio device 1.

The top speaker 7 is covered with a cylindrical cover 14 having a bottom surface 13 and an open top surface, and a step portion 15 on the side wall of the cylindrical cover 14. A small hole 16 is provided in a side wall above the step portion 15. The cylindrical cover 14 has an upper end flange 17 and a lid 9.
Between the lower edge 9a of the top speaker 7 and the
7a, and a rib 15a provided on the step 15 is provided on a cover 18 at the bottom 18a of the recess 18 below the hole 12 formed by the notches 10, 11 of the front cabinet 2a and the rear cabinet 2b. It is mounted on the periphery of the insertion hole 19.

Therefore, the bottom portion 18a of the recess 18 divides the inside of the cabinet 2 into upper and lower portions, and the back portion of the front speaker 6 and the top surface of the front speaker 6 prevent the sounds from the front speaker 6 and the top speaker 7 from interfering with each other. The front and top speakers 6 and 7 are separated from the back of the speaker 7 to form separate enclosed spaces 20a,
20b. Reference numeral 21 denotes a diffuser arranged on the upper surface of the top speaker 7 and on the lower surface of the lid 9, and diffuses the mid-high range from the top speaker 7 to the surroundings. Reference numeral 22 denotes a partition wall provided in the front and rear longitudinal direction in the cabinet 2. The closed space 20 is formed by the bottom 18 a and the side 18 b of the recess 18.
a.

Reference numeral 23 denotes a penetrating boss, and 24 denotes the audio equipment 1.
The tape cassette insertion portion 25 provided on the top surface also shows an operation button, and is arranged between the left and right lids 9 on the top surface so that the dividing line 3 is inconspicuous.

Hereinafter, a method of assembling the audio device 1 having the above-described configuration and the effects thereof will be described.

Since the cabinet 2 is assembled by connecting the front cabinet 2a and the rear cabinet 2b, it is easy to assemble and a dividing line can be seen in front of the audio equipment as seen in the conventional example of dividing into upper and lower parts. There is no.

A cover 9 for covering the top of the top speaker 7
By inserting the side wall 8 into the hole 12 formed by the notch portion of the front cabinet 2a and the notch portion 11 of the rear cabinet 2b facing each other, the dividing line 3 can be seen from the upper surface of the audio device 1. Inconspicuous. Therefore, it is preferable in design.

The top speaker 7 has a hole 12 in the cabinet 2.
It is arranged in the cylindrical cover 14 inserted into the cover insertion hole 19 of the bottom part 18a of the recess 18 formed by the lower end 9a of the lid 9 and the upper end flange 17 of the cylindrical cover 14. Since the upper peripheral edge of the speaker 7 is clamped, its attachment is easy.

In addition, the back of the top speaker 7 is covered with the cylindrical cover 14 and is entirely surrounded by the side 18b and the bottom 18a of the recess 18, so that it is disposed in the closed space 20b. The sound characteristics are good without interfering with the sound. Of course, the front speaker 6 is disposed in the closed space 20a formed by the partition wall 22, the side wall of the cabinet 2 and the bottom 18a of the recess 18 in the cabinet 2, and does not interfere with the sound of the top speaker 7, so that the sound is acoustic. Good characteristics.

On the top surface of the audio device 1, a portion provided with the tape cassette insertion portion 24 and the operation buttons 25 is more preferable in design since the visualization of the dividing line 3 is reduced.

[0031]

As is apparent from the above description, since the acoustic device of the present invention has a cabinet formed by combining the front cabinet and the rear cabinet, the dividing line is on the top surface and cannot be seen from the front. Preferred for design.

In addition, a lid that covers the top of the top speaker is arranged on the dividing line on the top so as to make the dividing line inconspicuous. Moreover, the top speaker is easily inserted from the top into the recess formed in the top of the cabinet, and is disposed in the closed space formed by the cylindrical cover and the bottom of the recess. It has good sound characteristics without mutual sound interference.

[Brief description of the drawings]

FIG. 1A is a front view of an audio device according to an embodiment of the present invention. FIG.

FIG. 2 is an enlarged cross-sectional view of a main part of the audio device taken along line AA in FIG.

FIG. 3 is an enlarged sectional view of a main part in the direction of arrows BB in FIG. 1 (b).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Audio equipment 2 Cabinet 2a Front cabinet 2b Rear cabinet 3 Dividing line 6 Front speaker 7 Top speaker 8 Side wall 9 Lid body 10, 11 Notch part 12 hole 14 Cylindrical cover 18 Depression 18a Bottom part 19 Cover insertion hole 20a, 20b Sealing Space 21 Diffuser 22 Partition wall 24 Tape cassette insertion part 25 Operation button

Claims (6)

(57) [Claims] 1. A cabinet formed by joining a front cabinet and a rear cabinet, a recess which is a hole formed by opposing a notch on a dividing line on a top surface of the cabinet, and a cover provided at a bottom of the recess. A top speaker disposed between a tubular cover fitted into the insertion hole, a lid fitted into the tubular cover and fitted over the hole, and a front speaker provided on the front of the cabinet A sound device comprising: 2. The lid has a top surface and a side wall that fits into a hole of a cabinet, and a through hole is provided through a part of the top surface and a part of the side wall. The acoustic device according to claim 1, wherein a net is mounted, and the through-hole is directed to a front direction and a side direction of the acoustic device. 3. The acoustic device according to claim 1, wherein a diffuser is provided between a lower portion of the lid and the top speaker. 4. A front speaker is a hermetically sealed structure comprising a vertical partition in a cabinet, a cabinet wall, a concave side wall and a bottom surface on the top surface of the cabinet, and a cylindrical cover fitted on the bottom surface. 4. The acoustic device according to claim 1, wherein the acoustic device is arranged in a space. 5. The audio device according to claim 1, wherein a dividing line on a top surface of the cabinet is covered, and a tape cassette insertion portion and an operation button are provided between the two lids. 6. The speaker according to claim 1, wherein the top speaker is a speaker for a middle and high range, and the front speaker is a speaker for a low range.
6. The acoustic device according to any one of items 1 to 5.