Loudspeaker device

A technology of loudspeaker and passive radiator, applied in frequency/direction characteristic devices, sensors, sensor parts and other directions, can solve the problem of inability to obtain physical adsorption effect, achieve large volume expansion effect, realize miniaturization, and expand bass range Effect

Active Publication Date: 2008-04-23
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, almost no physical adsorption effect can be obtained in the high frequency band above 100 to 200 Hz
Therefore, if it is intended to use granular activated carbon with an average particle diameter of 0.1 mm or more as the activated carbon 92 to obtain a volume expansion effect, there is a big problem that its use is limited to a speaker device for bass below 100 Hz.

Method used

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Examples

Experimental program
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no. 1 Embodiment approach

[0102] A speaker device according to a first embodiment of the present invention will be described with reference to FIG. 1 . FIG. 1 is a cross-sectional view showing the structure of an example of the speaker device according to the first embodiment. In FIG. 1 , the speaker device includes a box 10 , a speaker unit 11 , a gas adsorbent 12 , and a shielding member 13 . In addition, the speaker device shown in FIG. 1 is a sealed type speaker device.

[0103] The speaker unit 11 is, for example, an electrodynamic speaker. The speaker unit 11 is installed in an opening portion formed in the front upper portion of the box body 10 . The gas adsorbent 12 is, for example, powdery activated carbon (hereinafter referred to as powdered activated carbon) having an average particle diameter of 0.01 to 0.03 mm. In addition, the above-mentioned powdery activated carbon is obtained by pulverizing activated carbon produced from, for example, coconut husks as a plant material to an average ...

no. 2 Embodiment approach

[0121] A speaker device according to a second embodiment of the present invention will be described with reference to FIG. 4 . Fig. 4 is a cross-sectional view showing the structure of an example of the speaker device according to the second embodiment. The speaker device of the present embodiment differs from the speaker device of the first embodiment in that it is a speaker device of a so-called phase inversion method including a passive radiator 21 . Hereinafter, the difference will be mainly explained.

[0122] In FIG. 4 , the speaker device includes a box 20 , a speaker unit 11 , a gas adsorber 12 , a shielding member 13 , a passive radiator 21 , and a partition 22 . In addition, the speaker unit 11, the gas adsorption body 12, and the shielding member 13 shown in FIG. 4 are the same as those of the said 1st Embodiment, and are assigned the same code|symbol, and description is abbreviate|omitted.

[0123] The speaker unit 11 is installed in an opening portion formed in ...

no. 3 Embodiment approach

[0132] A speaker device according to a third embodiment of the present invention will be described with reference to FIG. 7 . 7 is a diagram showing a side cross-sectional view of an example of a speaker device according to a third embodiment and a rear view partially showing a cross-section. The speaker device of the present embodiment differs from the speaker device of the first embodiment in that it is a speaker device of a so-called phase inversion method including an audio port 31 . In addition, the speaker device according to the present embodiment differs from the speaker device according to the first embodiment in that it further includes a dividing arrangement mechanism 32 to divide and arrange the gas adsorbent 12 . Hereinafter, the difference will be mainly explained.

[0133] In FIG. 7 , the speaker device includes a box 30 , a speaker unit 11 , a gas adsorber 12 a , a shielding member 13 , an acoustic port 31 , and a division arrangement mechanism 32 . In additi...

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Abstract

A speaker device has a cabinet, a speaker unit fixed to the cabinet, and powder-like gas adsorption bodies for physically adsorbing gas present in the space in the cabinet. The average particle diameter of the gas adsorption bodies is less than 0.1 mm. The speaker device is capable of reproducing rich bass sound and is small in size, and in the speaker device, the bass range is extended, lowering in a sound pressure level is prevented, and a volume expansion effect is exhibited also in a high frequency range equal to or above 100-200 Hz.

Description

technical field [0001] The present invention relates to loudspeaker devices, and more particularly, to loudspeaker devices that achieve rich bass reproduction in a compact enclosure. Background technique [0002] In conventional speaker devices, it has been difficult to realize a speaker device capable of reproducing bass in a compact size due to the influence of sound rigidity present in the internal space of the cabinet. The bass reproduction limit is determined by the rigidity of the sound, that is, the volume inside the box. Therefore, as one means for solving the problem of the bass reproduction limit, a speaker device in which activated carbon blocks are arranged inside a cabinet has been proposed (for example, refer to Patent Document 1). [0003] Fig. 18 is a cross-sectional view showing the structure of a main part of a conventional speaker device. In FIG. 18 , a conventional speaker device includes a cabinet 90 , a speaker 91 for a woofer, activated carbon 92 , a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/02H04R1/28
CPCH04R1/2803H04R2499/15H04M1/035H04R2499/13H04R1/2819H04R1/2834H04R2499/11H04R1/02H04R1/28
Inventor 佐伯周二松村俊之
Owner GOERTEK INC
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