JPH1051879A - Speaker unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker unit which has superior bass range reproduction capability and also has superior visual performance by providing a light- transmissive passive radiator diaphragm in front of the diaphragm of a dynamic speaker across an empty chamber, and providing a lamp for illumination in the empty chamber. SOLUTION: In front of the diaphragm 7 which reproduces sound output, the translucent passive radiator(PG) diaphragm 9 is provided across the space 13, and frequency characteristics of the bass range are adjusted by varying the space capacity of the space 13 or changing the materials, etc., of the PG diaphragm 9. Light emission bodies 15 of respective colors are provided in the space 13 and the light emission bodies 15 colored corresponding to frequency components of a sound output signal are made to illuminate according to the signal level. Consequently, a heavy low-pitched sound can be reproduced by a small-sized speaker, the output state of the reproduced sound can be viewed like a spectrum analyzer, and fantastic lighting is obtained through the translucent PG diaphragm 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bass reproduction type speaker unit, and more particularly to a speaker unit having a visual effect.

[0002]

2. Description of the Related Art In recent audio devices, it has been required to reproduce heavy bass contained in a music source or the like at a powerful volume with a small speaker. Against this background, a relatively large low-frequency dedicated speaker (super woofer) or a low-frequency speaker of a passive radiator type or the like is often provided in order to compensate for the low sound that is often insufficient with a small speaker. I have.

On the other hand, speakers are required to have not only good sound performance but also good design such as shape and color, that is, visual performance and function.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above problems, and an object of the present invention is to provide a speaker unit which is excellent in bass reproduction capability and visual performance. .

[0005]

In order to achieve the above object, a speaker unit according to the present invention comprises a dynamic speaker and a light-transmitting device having no driving source provided through a space in front of a diaphragm of the dynamic speaker. A passive radiator diaphragm and a lighting lamp provided in the room.

[0006] Further, the diaphragm of the dynamic speaker and the passive radiator diaphragm are dome protruding in the sound output direction.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram in one embodiment of the present invention. 1 is a donut type permanent magnet for forming a magnetic circuit. Reference numeral 2 denotes a pole piece forming a magnetic circuit, and a column-shaped center piece protrudes from the center of the soft iron disk. Reference numeral 3 denotes a plate formed of a donut type soft iron disk, which forms a magnetic circuit together with the permanent magnet 1 and the pole piece 2, and a slit (gap) into which a voice coil is inserted between the plate and the center piece.

Reference numeral 5 denotes a damper for holding a diaphragm (cone paper) 7 and a bobbin 6 around which the voice coil 4 is wound at a predetermined position, and is formed of a material such as cloth into a circular wave shape. 6
Is a bobbin around which the voice coil 4 is wound, and a diaphragm (cone paper) 7 is attached to an upper portion thereof. Reference numeral 7 denotes a diaphragm (cone paper), which is made of paper, resin, or the like, has a conical shape, has a bobbin 6 attached to a lower portion, and an upper portion (outer periphery).
Is fixed to a diaphragm holding ring 12 projecting from the frame by an elastic body so that the diaphragm 7 can vibrate while keeping the cone paper at a specific position, that is, to elastically hold the diaphragm 7. I have. Reference numeral 8 denotes a cap that covers the center opening of the bobbin 6 and also serves as a dust proof. Reference numeral 9 denotes a passive radiator diaphragm, which is formed of a translucent resin or a semi-translucent plate having a transparent surface provided with fine irregularities and having a diffusing surface. Have a possible hold. The frequency characteristics in the low frequency range can be adjusted by changing the thickness, material, etc. of the passive radiator diaphragm. Also, by changing the space capacity of the space 13, the frequency characteristics in the low frequency range can be adjusted.

The space 13 is a space closed by the frame 11, the diaphragm 7, the diaphragm holding ring 12, and the like of the speaker unit. 14 is a speaker frame 11
A plurality of light emitters 15 (a plurality of colors) are attached to the end of the holding metal fitting so as not to contact the vibration system of the speaker. The luminous body 15 has an LED.
(Light emitting diode), a light bulb or the like is used.

A signal output from the speaker, that is, a signal corresponding to the level of the signal in each frequency band of the output signal of the audio drive amplifier is supplied from the connection terminal 16 to each light emitting body 15, and the frequency component The luminous body 15 which is colored according to the light emission according to the signal level in the corresponding frequency band. Therefore, illumination having a color and brightness corresponding to the frequency characteristics of the sound output output from the speaker can be viewed through the translucent passive radiator diaphragm 9.

Next, the operation will be described. The output signal of the speaker drive amplifier of the audio device is a voice coil 4
Is input to And permanent magnet 1, pole piece 2,
The current from the drive amplifier flows through the voice coil 4 in the gap (in the magnetic field) of the magnetic circuit composed of the plate 3, and the voice coil 4 vibrates due to its electromagnetic action.
Then, the vibration is transmitted through the bobbin 6, and the diaphragm 7 vibrates to reproduce an acoustic output. And the vibration of the diaphragm 7 is
The light is transmitted to the passive radiator diaphragm 9 via the closed space 13. The transmission characteristics of the vibration passing through the closed space 13 change depending on the capacity of the closed space 13, and the frequency characteristics of the output reproduced sound from the passive radiator diaphragm 9 change. In addition, the resonance frequency of the bass changes depending on the mass of the passive radiator diaphragm 9 and the like. Therefore, by changing the capacity of the closed space 13 or changing the material or the like of the passive radiator diaphragm 9, it is possible to produce a distinctive bass sound.

On the other hand, the output of the drive amplifier is divided into a plurality of frequency bands, and a signal corresponding to the level of each frequency band is output to the plurality of light emitters 15. Therefore, the light emitting state of the light emitting body 15 changes according to the signal level of each frequency band. It is configured as a simple spectrum analyzer that allows visual observation of the frequency characteristics of the reproduced sound reproduced from the speaker.

FIG. 3 is a front view of the speaker unit of the present invention. The light emitters 15 are provided at appropriate intervals clockwise, and each light emitter 15 is supplied with a signal corresponding to a signal level in a frequency band of f1, f2,.
Each light emitter 15 emits light according to the signal. This lighting operation is performed via the passive radiator diaphragm 9 (semi-transparent).
The state of the sound output can be visually confirmed and can be confirmed by ear and eyes.

As described above, according to the present invention, it is possible to reproduce heavy bass with a small speaker, and to adjust the bass characteristics by changing the capacity of a closed space with a passive radiator diaphragm, and to emit light inside. With the body 15, the output state of the reproduced sound can be visually observed like a spectrum analyzer. Further, since the passive radiator diaphragm 9 is translucent and the light of the light emitting body 15 is appropriately diffused, a fantastic illumination is performed.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those of the first embodiment shown in FIG. The feature of this embodiment (difference from the first embodiment) is that the diaphragm 7 and the passive radiator diaphragm 9 of the dynamic speaker are both dome-shaped projecting in the sound output direction. For this reason, the strength of the diaphragms 7 and 9 is higher than that of a plate-like diaphragm, and distortion is reduced. Further, since the sound emission direction is wide, the directivity is improved.

[0016]

As described in detail above, according to the present invention, a speaker unit which is advantageous for low-frequency reproduction and excellent in visual effect can be provided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram according to a second embodiment of the present invention.

FIG. 3 is a front view of the speaker unit.

[Explanation of symbols]

 1 ... permanent magnet 2 ... pole piece 3 ... plate 4 ... voice coil 5 ... damper 6 ... ... bobbins

Claims (2)

[Claims] A dynamic loudspeaker; a light-transmitting passive radiator diaphragm having no driving source provided through a space in front of a diaphragm of the dynamic speaker; and a lighting device provided in the space. And a lamp unit. 2. The speaker unit according to claim 1, wherein the diaphragm of the dynamic speaker and the passive radiator diaphragm are dome protruding in the sound output direction.