JP2568805Y2 - Speaker device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loudspeaker device which mounts a portable audio device such as a headphone stereo to amplify reproduced sound.

[0002]

2. Description of the Related Art Conventionally, some portable audio equipment such as a headphone stereo does not have a speaker for loudspeakers. Therefore, when listening to reproduced sound by a plurality of persons, a headphone stereo or the like is connected to a separate speaker. The sound is reproduced.

When a portable audio device is connected to a separate speaker and used, there are two blocks of the portable audio device and a separate speaker. Therefore, there is a disadvantage that the function as a portable is impaired.

Therefore, there has been proposed a speaker device in which a portable audio device can be housed in a speaker device having a speaker, or a separate speaker and a portable audio device can be housed integrally via a cabinet body. Have been.

[0005]

By the way, as described above, in the conventional speaker device, the reproduced sound is amplified while the headphone stereo and the like are housed. Therefore, when the wired remote control type headphone stereo and the like are housed, There is a problem that the operation of the headphone stereo or the like using the wired remote control cannot be performed from outside the speaker device.

Accordingly, an object of the present invention is to easily perform a remote control operation of the volume from outside a speaker device on which a portable audio device of a wired remote control type is mounted.

[0007]

According to the present invention, there is provided a speaker device which accommodates a portable audio device inside the device, and has a speaker and an output terminal to which an output audio signal is supplied from an audio signal. A resistor is inserted into a common portion of a signal path for a speaker and an output terminal from the remote controller. The remote control has a volume control means including at least a variable resistor for volume control and is detachable from the output terminal. When connected to a speaker device via an output terminal, the volume of the speaker is adjusted by varying the variable resistor of the remote controller by the ratio of the variable resistor to the resistor. Things.

[0008]

First, the portable audio device H is connected to the speaker device S.
Is placed on the placing section 8. Next, the output terminal (jack) 4 of the speaker device S is connected to the output terminal 5 of the portable audio device H.
Connect to 0. Further, a separate headphone 51 having a volume adjusting function, for example, is connected to the jack 4 of the speaker device S. When the volume adjustment dial S1 of the headphone 51 is adjusted, the resistance values of the variable resistors RL and RR change. Therefore, the resistance between the variable resistors RL and RR of the headphone 51 and the resistors RA and RB inserted in the common portion is changed. The ratio changes. Therefore, the audio signals SL, supplied to the speakers 3a, 3b,
The sound volume can be adjusted by changing the SR level. Therefore, by adjusting the volume adjustment dial S1 of the headphones 51, the speaker 3 can be easily adjusted from outside the speaker device S.
The volume output from a and 3b can be remotely controlled.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the speaker device S, FIG. 2 is a right side view thereof, and FIG. 3 is a sectional view taken along line II of FIG. In the figure, reference numeral 1 denotes a cabinet main body that houses a headphone stereo H of a wired remote control type, and has a substantially egg shape. Reference numeral 2 denotes a substantially crescent-shaped protection net, which is disposed at both ends (left and right in FIG. 1) of the cabinet body 1 and on the front surfaces (left surfaces in FIG. 2) of the speakers 3a and 3b, respectively. 4 is a remote control (hereinafter, referred to as
A jack for connecting the plug 52 of the headphone 51 having an operation unit 53 (referred to as “remote control”), and is arranged on one side (right side in FIG. 1) of the cabinet body 1 so as to be flush with the outer surface thereof. (See FIG. 3). The jack 4 is an output terminal for outputting audio signals SL and SR from audio terminals L and R of a headphone stereo H described later, and receives a remote control signal SA from a generator 53a of a remote control signal for the headphones 51 described later. Is what you do. The same applies to a jack 50 of a headphone stereo H described later.

Below the jack 4, as shown in FIG. 3, a disk-shaped volume adjusting dial 30 is provided.
Attached to. As shown in FIGS. 1 and 3, the dial 30 partially protrudes from the cabinet 1. Reference numeral 5 denotes a lid for opening the upper side and the back side (the right side in FIG. 2) of the cabinet body 1 as shown in FIG. That is, an upper plate 5a having substantially the same thickness as that of the cabinet body 1 is provided at the upper end of the lid body 5 and the cover body 5 is engaged with and disengaged from the cabinet body 1 near the upper end thereof (not shown). An enabling locking means is provided.

At the lower end of the lid 5, there is provided a tilting means 7 for tilting the lid 5 with respect to the cabinet body 1. Then, by removing the locking means, the lid 5 falls down with the tilting means 7 as a fulcrum, as shown in FIG. A cushioning member 6 for alleviating collision or the like of the headphone stereo H during storage movement is adhered to the back surface (the upper surface in FIG. 2) of the lid 5.

As shown in FIG. 3, a mounting portion 8 for mounting the headphone stereo H is disposed substantially at the center of the cabinet main body 1. Both sides of this mounting portion 8 (FIG. 3)
Right and left speakers 3a and 3b are attached to the positions facing the protection nets 2 and 2, respectively. In the cabinet 1, as shown in FIGS. 1 and 3, a battery 31 and an amplifier 32 are arranged near the mounting portion 8.

A relay cord 9 is led out of the jack 4, and the relay cord 9 is connected to a jack 50 of the headphone stereo H by a remote control signal SA as shown in FIG.
And a plug 10 for connecting audio signals SL and SR reproduced by the headphone stereo H is provided in series. A relay section 11 is provided substantially at the center of the relay cord 9. From the relay section 11, audio signals SL, SR from the headphone stereo H are transmitted to the left and right speakers 3a, 3a.
The lead wires 12a, 12a and the ground wires 12b, 12b for supplying the power to the speaker b are drawn out, and these wires are connected to the left and right speakers 3a, 3b, respectively.

FIG. 4 is a circuit diagram of the headphone 51.
Between the left and right audio terminals R and L of the plug 52 and the left and right speaker units 54L and 54R, variable resistors RL and RR for adjusting the volume of the speaker units 54L and 54R when the headphones 51 are used. It is connected. The movable element positions of these variable resistors RL and RR are determined by the volume adjustment dial S1 provided on the housing of the remote control operation unit 53.
(See FIG. 3).

When the volume of the headphone 51 is adjusted by the volume adjustment dial S1, the variable resistors RL and RR control the current of the audio signal flowing through the speaker units 54L and 54R. The current flowing through 54L and 54R decreases, and the volume decreases. On the other hand, when the resistance values of the variable resistors RL and RR are reduced, the current flowing through the speaker units 54L and 54R increases, and the volume increases.

A remote control signal SA consisting of operation buttons S2 to S5 and resistors R3 to R5 is provided between the remote control terminal RMT of the plug 52 and the ground terminal GND.
3a are arranged. Here, S2 is a play (PLAY) button, S3 is a rewind (REW) button, S4 is a fast forward (FF) button, and S5 is a stop (STOP) button. These operation buttons S2 to S5 are also arranged on the housing of the remote control operation unit 53 (see FIG. 3). By pressing each of the operation unit buttons S2 to S5, the plug 5
A signal (remote control signal SA) having a different voltage level is supplied to the second remote control terminal RMT, whereby a remote control operation is performed.

FIG. 5 is a circuit diagram of the cabinet body 1. The audio terminals L and R of the jack 4 are connected to the left and right speakers 3.
ground terminal GND of jack 4 via coils b and 3a
Connected to each other. An amplifier 32 is connected in front of the speakers 3b and 3a, and variable resistors RSL and RSR for adjusting the volume of the speakers 3b and 3a are connected in front of the amplifier 32. The positions of the movers of these variable resistors RSL and RSR are adjusted by a volume adjustment dial 30 arranged in the cabinet 1 (FIG. 1).
To FIG. 3).

Audio terminals L and R and ground terminal GND
Are the audio terminals L and R of the plug 10 and the ground terminal GN
D. The remote control terminal RMT of the jack 4 is connected to the remote control terminal RMT of the plug 10. A predetermined value (2.2 KΩ in this example) is provided between the connection points PA and PB between the variable resistors RL and RR of the headphones 51 and the speakers 3 b and 3 a and the audio terminals L and R of the plug 10.
Are connected respectively.

FIG. 6 is a circuit diagram of a main part of the headphone stereo H. The remote control terminal RMT of the jack 50 is connected to the controller 55. Jack 50
Are connected to the left and right audio signals S of the output amplifier 56.
L and SR are connected to output terminals. The ground terminal GND of the jack 50 is grounded.

In this embodiment, first, as shown in FIG. 2, the lid 5 is folded down to open the upper and lower surfaces of the cabinet body 1. Next, the user places the headphone stereo H on the placement unit 8. Headphone stereo H in this case
Is a direction in which the jack 50 of the headphone stereo H is directed toward the jack 4 of the cabinet body 1 (the left side in FIG. 3). Then, the plug 10 arranged on the cabinet body 1 is connected to the jack 50 of the headphone stereo H. Subsequently, the lid 5 is raised and closed. That is, the headphone stereo H is housed in the speaker device S. Then, the plug 52 of the headphones 51 is connected to the jack 4 of the cabinet body 1. In this state, the headphone stereo H inside the cabinet body 1 is operated from outside the cabinet body 1.

That is, by operating the operation buttons S2 to S5 of the operation section 53 of the headphone 51, a remote control signal SA is generated, and the remote control terminal RMT of the plug 52 is generated.
(See FIG. 4). As shown in FIG. 5, the remote control signal SA passes through the jack 4 of the cabinet body 1 and the remote control terminal RMT of the plug 10.
Supplied to This remote control signal SA is
As shown in (1), the signal is supplied to the controller 55 via the jack 50 of the headphone stereo H, whereby the operation of the headphone stereo H is controlled.

On the other hand, when the headphone stereo H is in the play state, the audio signals SL and SR are supplied from the output amplifier 56 in the headphone stereo H to the audio terminals L and R of the jack 50 as shown in FIG. You. And
As shown in FIG. 5, the audio signals SL and SR are supplied from the plug 10 of the cabinet body 1 to the left and right speakers 3a and 3b via the relay section 11. In this case, since the audio signals SL and SR are amplified by the amplifier 32,
The amplified sound is output from a and 3b. The volume of the speakers 3a and 3b can be adjusted by operating the volume adjustment dial 30 arranged on the speaker device S.

The volume of the speakers 3a and 3b can be adjusted by operating the volume adjustment dial S1 of the headphone 51. When the volume adjustment dial S1 of the headphone 51 is adjusted, the resistance values of the variable resistors RL and RR change, so that the resistance ratio between the variable resistors RL and RR and the resistors RA and RB changes. Therefore, the audio signals SL, supplied to the speakers 3a, 3b,
The level of the SR changes and the volume changes. In this case, if the resistance values of the variable resistors RL and RR are increased,
Since the levels of the audio signals SL and SR supplied to the speakers 3a and 3b increase, the volume output from the speakers 3a and 3b increases. On the other hand, when the resistance values of the variable resistors RL and RR are reduced, the levels of the audio signals SL and SR supplied to the speakers 3a and 3b are reduced.
The volume output from 3b decreases. That is, the volume output from the speakers 3a and 3b is adjusted in conjunction with the operation of the volume adjustment dial S1.

To remove the headphone stereo H from the cabinet main body 1, the procedure described above is reversed.

According to this embodiment, the volume can be easily remote-controlled from outside the speaker device S using the headphones 51 having a volume adjustment function. Further, according to this example, the headphone 51 attached to the headphone stereo H can be used, and the headphone 51 can be effectively used.

Although the above embodiment has been described with reference to an example in which the volume of the speaker device S is remotely controlled by the volume adjustment dial S1 of the headphones 51, a device without a headphone function may be used. In short, any device having a volume control function can be similarly applied.

In the above-described embodiment, the portable audio device is the headphone stereo H. However, the portable audio device is not limited to this, and can be applied to, for example, a CD player. In short, the present invention can be applied to any portable device.

Further, in the above-described embodiment, the example of the speaker device S in which the left and right speakers 3b and 3a are provided in the cabinet body 1 in advance has been described. However, the speaker device is not limited to this. The left and right independent speakers are mounted on the main body 1, and the present invention can be similarly applied to a speaker device that accommodates portable audio equipment.

[0029]

According to the present invention, for example, when headphones with a volume control function are connected to the output terminal of the output audio signal of the speaker device and the volume control dial is adjusted, the speaker and output from the variable resistor and the audio equipment are adjusted. Since the ratio of the resistance to the resistor inserted in the common part of the signal path to the terminal changes, the level of the audio signal supplied to the speaker changes, and the volume can be adjusted, and the volume can be easily controlled from outside the speaker device by remote control it can.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment.

FIG. 2 is a right side view of the embodiment.

FIG. 3 is a sectional view taken along line II of FIG. 2;

FIG. 4 is a circuit diagram of a headphone.

FIG. 5 is a circuit diagram of a cabinet body.

FIG. 6 is a circuit diagram of a main part of the headphone stereo.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet main body 3a, 3b Speaker 4, 50 jack 5 Lid 8 Mounting part 9 Relay cord 10, 52 Plug 11 Relay part 51 Headphone 53 Operation part RA, RB resistor RL, RR Variable resistor S Speaker device S1 Volume control Dial H Headphone stereo

Claims (1)

(57) [Scope of request for utility model registration] 1. A speaker device for accommodating a portable audio device inside the device and having a speaker and an output terminal to which an output audio signal from the audio signal is supplied, wherein the audio device transmits the audio signal to the speaker and the output terminal. A resistor is inserted into a common portion of the signal path, and a remote controller is provided which has a volume control means including at least a variable resistor for volume control and is detachable from the output terminal, and the remote control is connected via the output terminal. When the speaker is connected to the speaker device, the volume of the speaker is adjusted by the ratio of the resistance of the variable resistor to the resistance of the resistor by varying the variable resistor of the remote controller. Speaker device.