JP2021111958A - Speaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker device for efficiently visualizing a diaphragm such as a speaker unit. SOLUTION: The speaker device has a light emitting unit 8 that blinks at a frequency within a predetermined range with respect to a predetermined reference frequency, and a diaphragm 13 to which light from the light emitting unit is irradiated. [Selection diagram] FIG. 6

Description

The present disclosure relates to a speaker device.

Conventionally, a device for appreciating the blinking of a strobe itself (for example, Patent Document 1 below) and a technique for creating a visual effect by irradiating a diaphragm of a speaker with light (for example, Patent Document 2 below). ) Has been proposed.

Japanese Unexamined Patent Publication No. 2006-148503 Japanese Patent Publication No. 2012-513704

The technique described in Patent Document 1 described above does not visualize the diaphragm of the speaker. Further, in the technique described in Patent Document 2, since the blinking of the light source is controlled based on the modulation of the input audio signal, real-time processing is required, which leads to an increase in processing cost and a complicated circuit configuration. There was a risk.

The present disclosure has been made in view of the above points, and one of the objects of the present disclosure is to provide a speaker device in which blinking of a light emitting unit (light source) is controlled without being based on modulation of an input audio signal. do.

This disclosure is
A light emitting part that blinks at a frequency within a predetermined range with respect to a predetermined reference frequency,
It is a speaker device having a diaphragm to which light from a light emitting unit is irradiated.

FIG. 1 is a diagram that is referred to when the technique that is the premise of one embodiment is explained. FIG. 2 is a diagram that is referred to when the technique that is the premise of one embodiment is explained. FIG. 3 is a diagram that is referred to when the technique that is the premise of one embodiment is explained. FIG. 4 is a diagram that is referred to when the technique that is the premise of one embodiment is explained. FIG. 5 is a diagram showing an external example of the speaker device according to the embodiment. FIG. 6 is a diagram showing a part of an example of the internal structure of the speaker device according to the embodiment. FIG. 7 is a diagram for explaining an example of an electrical configuration of the speaker device according to the embodiment. FIG. 8 is a diagram showing an example of an impedance curve. FIG. 9 is a diagram for explaining a modified example. FIG. 10 is a diagram for explaining a modified example. FIG. 11 is a diagram for explaining a modified example. FIG. 12 is a diagram for explaining a modified example. FIG. 13 is a diagram for explaining a modified example.

Hereinafter, embodiments and the like of the present disclosure will be described with reference to the drawings. The explanation will be given in the following order.
<One Embodiment>
<Modification example>
The embodiments and the like described below are suitable specific examples of the present disclosure, and the contents of the present disclosure are not limited to these embodiments and the like.
Unless otherwise specified, the dimensions, materials, shapes, relative arrangements thereof, directions such as up / down / left / right, etc. of the constituent members described in the embodiments are limited to the scope of the present disclosure. It is not intended to be limited to, but merely an example of explanation. The size and positional relationship of the members shown in each drawing may be exaggerated to clarify the explanation, and only a part of the reference reference numerals is used to prevent the illustration from becoming complicated. It may be illustrated.

<One Embodiment>
[About the technology that is the premise of this embodiment]
First, in order to facilitate the understanding of the present disclosure, the techniques underlying the present embodiment will be described. In the present embodiment, the movement of the diaphragm is visualized by irradiating the diaphragm of the speaker device with the stroboscope using the principle of the stroboscope.

FIG. 1 is a diagram showing, for example, the movement of a 55 Hz sine wave for 1 second. 55Hz is a frequency closer to the low frequency among the low-frequency bass sounds in music. When the speaker device is driven at 55 Hz, the diaphragm moves slowly in the music signal, but the diaphragm still moves too fast to be seen by the naked eye.

FIG. 2 is a diagram assuming a case where a diaphragm driven by a 55 Hz sine wave shown in FIG. 1 is irradiated with a 50 Hz strobe extended by 0.2 seconds. It repeats turning on for 0.002 seconds and turning off for 0.018 seconds. Due to the frequency shift from the frequency (55 Hz) at which the diaphragm operates, the phase at the moment of shining gradually shifts.

FIG. 3 is a diagram in which the strobe state is returned to 1 second. The movement of the diaphragm is visualized as an illusion of a difference of 5 Hz movement. In general, with moving visual acuity, the movement of the diaphragm up to 10 Hz can be clearly seen, and it can be recognized that the diaphragm is moving up to 20 Hz. Therefore, it is possible to visualize up to about ± 20 Hz of the strobe frequency.

FIG. 4 is a diagram showing a frequency distribution of a predetermined music signal. The horizontal axis of FIG. 4 indicates the frequency (Hz), and the vertical axis indicates the passage of time and the level. FIG. 4 shows an example of a signal level of a predetermined music signal from 0 to 200 Hz. Since the peak frequency moves according to the beat of the music, it seems that the diaphragm moves according to the music even if the strobe frequency is fixed. Even if the song changes, the frequency that people perceive as a beat is almost the same, so there is a beat at about 40 to 110 Hz. In addition, the frequency at which the diaphragm of the speaker vibrates greatly is limited. When the strobe frequency is determined in consideration of these two factors, the strobe light emission cycle (frequency) is set, for example, between 60 and 90 Hz.

That is, since the magnitude of the amplitude differs greatly between the frequency at which the amplitude of the speaker's vibrating plate is maximized (hereinafter, _{appropriately referred to as the maximum amplitude frequency f 0) and the other frequencies, the amplitude greatly deviates from the maximum amplitude.} Visualizing the movement of the vibrating plate by frequency is not effective. _{Therefore, if the light emitting portion is blinked near the maximum amplitude frequency f 0} of the diaphragm of the speaker, the frequency difference can be visualized, and further, the movement of the diaphragm of the speaker is visualized so that the user can easily recognize it. be able to. In addition, the music signal can be analyzed in real time, and the movement of the diaphragm can be efficiently visualized without being based on the result. Based on the above, a detailed explanation of the present embodiment will be given.

[Example of appearance of speaker device]
FIG. 5 is a diagram showing an external example of the speaker device (speaker device 1) according to the present embodiment. The speaker device 1 has a rounded triangular columnar shape as a whole. The top surface portion 3a of the speaker device 1 is provided with an operation unit 4 for performing operation input such as a power button and a touch panel. A display may be provided on the top surface portion 3a. Further, the speaker device 1 may have a size that allows it to be stationary or a size that allows it to be carried.

A speaker unit is provided on the largest side surface portion 3b of the speaker device 1. For example, the speaker unit 5 and the speaker unit 6 are provided so as to be arranged in the horizontal direction on the upper side of the side surface portion 3b. Further, the speaker unit 7 is provided at a position closer to the lower side of the side surface portion 3b and between the speaker unit 5 and the speaker unit 6. The speaker unit 5 and the speaker unit 6 are, for example, a full-range speaker unit, and the speaker unit 7 is a woofer speaker unit. Further, each speaker unit is, for example, a dynamic type speaker unit. A light emitting unit 8 is provided above the periphery of the speaker unit 7.

FIG. 6 is a diagram showing an example of an internal structure in the vicinity of the speaker unit 7 of the speaker device 1. The speaker device 1 has a magnetic circuit 11 and a voice coil 12, and the voice coil 12 is attached to the vicinity of the center of the diaphragm 13. The peripheral edge of the diaphragm 13 on the distal end side is attached to the frame 16 via the edge 14 and the fixing portion 15.

A light emitting unit 8 is provided on the sound radiation direction side (front side of the speaker unit 7) of the diaphragm 13. The light emitting unit 8 includes an LED (Light Emitting Diode) 8a, which is an example of a light emitting element, and a lens 8b. The lens 8b is a member for diffusing and guiding the light LT emitted from the LED 8a to the diaphragm 13.

[Electrical configuration example]
FIG. 7 is a block diagram for explaining an electrical configuration example of the speaker device 1. The speaker device 1 includes, for example, an amplifier 21, a speaker driver 22, and a strobe signal generator 23. A music signal is input to the speaker device 1. The music signal input to the speaker device 1 is amplified by the amplifier 21 and then supplied to the speaker driver 22. Then, when the speaker driver 22 operates, the sound corresponding to the music signal is reproduced from the speaker device 1.

The strobe signal generator 23 generates a blinking frequency of the light emitting unit 8, specifically, the LED 8a. The blinking frequency of the LED 8a is set to a frequency within a predetermined range from the reference frequency. The reference frequency is the maximum amplitude frequency f ₀ of the diaphragm 13. As described above, the blinking frequency of the LED 8a is, for example, in consideration of the human dynamic vision and the fact that the movement of the diaphragm 13 cannot be efficiently visualized if it is too far from _{the maximum amplitude frequency f 0 of the diaphragm 13.} , The maximum amplitude frequency is set to about ± 20 Hz from _{f 0.} As a specific example, if the maximum amplitude frequency f ₀ is 80 Hz, the LED 8a blinks at 75 Hz generated by the strobe signal generator 23. The light emitted from the LED 8a is applied to the diaphragm 13.

The music signal may be supplied to the speaker device 1 by wire or wirelessly. If necessary, a configuration such as a communication unit and a jack may be added to the speaker device 1 as appropriate.

[Operation example of speaker device 1]
When the music signal is reproduced by the speaker device 1, the LED 8a blinks at a predetermined frequency. The predetermined frequency is a frequency within a predetermined range from the reference frequency which is the maximum amplitude frequency f _{0 of the diaphragm 13, and is a preset frequency in the present embodiment.} By irradiating the diaphragm 13 with the light LT emitted from the LED 8a, the movement of the diaphragm 13 can be visualized.

The blinking of the LED 8a does not necessarily have to be synchronized with the reproduction of the music signal. For example, when the power of the speaker device 1 is turned on, the LED 8a may start blinking at the frequency described above. Further, a mode for turning off the blinking of the LED 8a may be set.

Further, in the present embodiment, the frequency of the diaphragm 13 is set to a preset frequency, but the blinking frequency of the LED 8a is within a predetermined range from the reference frequency which is _{the maximum amplitude frequency f 0 of the diaphragm 13.} May be switched.

[Maximum amplitude frequency f ₀ ]
The maximum amplitude frequency f ₀ can be defined as, for example, the frequency at which the amplitude of the diaphragm 13 is maximized when a predetermined audio signal is input to the speaker device 1. The maximum amplitude of the diaphragm 13 can be directly measured with a laser displacement meter or the like.

The amplitude of the diaphragm 13 can also be estimated by measuring the impedance carp with an acoustic measuring instrument. FIG. 8 shows an example of the impedance curve of the entire speaker box equipped with the speaker driver (which may have a passive radiator).

In FIG. 8, the horizontal axis represents frequency (Hz), and the vertical axis represents impedance (Ω) and amplitude (mm). Further, the line L1 in FIG. 8 shows an impedance curve, the line L2 shows the amplitude distribution of the speaker unit, and the line L3 shows the amplitude distribution of the passive radiator.

In the case of a dynamic speaker unit, the impedance curve has two maximum values. The amplitude of the speaker driver becomes the maximum value near the maximum value of the two impedance curves, so select either one. The frequency corresponding to the selected maximum value is the maximum amplitude frequency f ₀ . In the case of a passive radiator, the maximum amplitude is near the middle of the two maximum values of the impedance curve. The frequency corresponding to this maximum amplitude becomes the maximum amplitude frequency f ₀ . The bass reflex type also has the same impedance curve and speaker driver amplitude relationship. In the case of the closed type, the maximum value of the impedance curve is one, and the maximum amplitude of the speaker driver appears on the lower frequency side than that. The frequency corresponding to this maximum amplitude can be defined as the _{maximum amplitude frequency f 0.}

[Example of effect obtained by this embodiment]
According to the present embodiment described above, the movement of the diaphragm 13 can be efficiently visualized without analyzing the music signal input to the speaker device 1. Therefore, it is possible to prevent an increase in the calculation cost required for processing and a complicated circuit configuration.

<Modification example>
Although one embodiment of the present disclosure has been specifically described above, the content of the present disclosure is not limited to the one embodiment described above, and various modifications based on the technical idea of the present disclosure are possible.

The shape and the like of the speaker device can be changed as appropriate. FIG. 9 is a diagram showing an external example of the speaker device (speaker device 1A) according to the modified example. The speaker device 1A has, for example, a portable size and generally has a box-shaped housing 31. A speaker unit 33 and a speaker unit 34 are provided on the side surface 32 of the housing 31. The speaker unit 33 is a speaker for the L (Left) channel, and the speaker unit 34 is a speaker for the R (Right) channel. A passive radiator 35 is provided between the speaker unit 33 and the speaker unit 34.

Further, a support member 36 is provided on the side surface 32 of the housing 31. The support member 36 has a plate-shaped member 36a extending from between the speaker unit 33 and the passive radiator 35 to the vicinity of the center of the speaker unit 33.

Further, a support member 37 is provided on the side surface 32 of the housing 31. The support member 37 has a plate-shaped member 37a extending from between the speaker unit 34 and the passive radiator 35 to the vicinity of the center of the speaker unit 34.

As shown in FIG. 10, a light emitting portion 51 is provided on the inside (the side facing the speaker unit 33) near the tip of the plate-shaped member 36a. The light emitting unit 51 includes an LED 51a and a lens 51b. In this example, the light emitting unit 51 is arranged so as to face substantially the center of the speaker unit 33. Therefore, the light LT emitted from the LED 51a of the light emitting unit 51 can uniformly irradiate the diaphragm 41 of the speaker unit 33. Although not shown, a light emitting portion is similarly provided inside the plate-shaped member 37a. In this example, in order to prevent a decrease in sound pressure, it is preferable to make the plate-shaped members 36a and 37a as small as possible to support them like a cantilever.

Other modifications will be explained. In the above-described embodiment, the light emitting portion is arranged on the front side of the diaphragm (the side in the sound radiation direction) to irradiate the diaphragm, but on the rear side of the diaphragm (the side opposite to the sound radiation direction side). A light emitting portion may be arranged to irradiate the diaphragm from the rear side. Since the light emitting portion is not arranged on the sound radiation direction side, the movement of the diaphragm can be visualized and the sound pressure can be prevented from dropping. Further, light emitting portions may be provided on both the front side and the rear side of the diaphragm. Further, the music signal up to several seconds ago may be analyzed so that the strobe frequency is adjusted according to the characteristics of the music signal as the analysis result. Since such processing does not continuously change the frequency as in modulation, it can be realized without significantly complicating the processing. Further, for example, it may be used while switching between using it like a flash by lighting the light emitting unit for about several hundred ms and using it as a stroboscope as in the above-described embodiment.

This technology can be applied not only to the diaphragm of the speaker unit but also to the passive radiator. That is, by applying this technology, it is possible to visualize the movement of the passive radiator. In this case, a strobe signal generator for a light emitting unit that irradiates the passive radiator with light is provided.

In the above-described embodiment, the number of light emitting units may be a plurality of light emitting units instead of one. When a plurality of light emitting units are provided, the frequency at which each light emitting unit blinks may be the same, or may be different so that the user can select the light emitting unit. Further, one light emitting unit may have a plurality of LEDs and one lens that diffuses and guides the light.

Here, a modified example when the present technology is applied to a passive radiator will be specifically described. FIG. 11 is a view (cross-sectional view) showing an external example of the speaker device (speaker device 1B) according to the modified example. The speaker device 1B has, for example, a size that can be carried around, and generally has a tubular housing 61.

Speaker units 62a and 62b and speaker units 63a and 63b are provided on the peripheral surface of the housing 61. In the illustrated example, the speaker units 63a and 63b are arranged so as to be located between the speaker units 62a and 62b. The speaker units 62a and 63a are speakers for the L channel, and the speaker units 62b and 63b are speakers for the R channel. The speaker units 62a and 62b are, for example, tweeter speaker units, and the speaker units 63a and 63b are, for example, woofer speaker units.

Decorative panels 61a and 61b are provided on the two cylinder mouths of the housing 61, respectively. The decorative panels 61a and 61b have openings, respectively, and passive radiators 65a and 65b are provided in the openings of the decorative panels 61a and 61b, respectively. Although the decorative panel 61b and the passive radiator 65b on the front side shown in the drawing will be described below, the decorative panel 61a and the passive radiator 65a are the same as the decorative panel 61b and the passive radiator 65b.

FIG. 12 is a diagram showing an example of an internal structure in the vicinity of the passive radiator 65b. The decorative panel 61b is, for example, black and has a light-shielding property. The decorative panel 61b may have another color or may have translucency. The decorative panel 61b and the passive radiator 65b close the tube mouth portion of the housing 61 (see FIG. 1). As described above, the passive radiator 65b (the same applies to the passive radiator 65a) is attached to the same housing 61 as the speaker units 62a and 62b and the speaker units 63a and 63b, and the inside of the housing 61 is sealed. ..

As shown in FIG. 12, the passive radiator 65b includes a diaphragm 66 and an edge 67. The diaphragm 66 vibrates to produce an effect by the light of the strobe. The diaphragm 66 includes a dressing panel 66a, a decorative cover 66b, and a light guide 66c. The diaphragm 66 is not limited to being composed of the three parts of the appearance panel 66a, the decorative cover 66b, and the light guide body 66c in this way. For example, these may be integrally formed and may be composed of one component.

The appearance panel 66a is made of, for example, resin. The shape of the diaphragm 66 and the appearance panel 66a is not limited to the disk shape as shown in the figure, and may be an oval shape or the like. The appearance panel 66a is, for example, black and has a light-shielding property. The decorative cover 66b is made of, for example, a cloth, and is provided so as to cover the front side (the side in the direction of sound radiation by the diaphragm 66) of the appearance panel 66a. The decorative cover 66b can be omitted.

The light guide body 66c is formed of a translucent member such as acrylic or polycarbonate. The light guide body 66c guides the light LT from the light emitting unit 68, which will be described later, to the outside (outside the housing 61). Specifically, the light guide body 66c is provided on the peripheral edge of the diaphragm 66 on the inner surface (rear surface) side. More specifically, the light guide body 66c is composed of an annular thin plate (for example, a transparent plate) along the edge of the appearance panel 66a, and is located on the rear side of the appearance panel 66a (the side in the direction of sound radiation by the diaphragm 66). It is provided on the periphery of the surface on the opposite side).

The edge 67 is formed of an elastic member such as rubber, and the diaphragm 66 is freely vibrated and attached to the decorative panel 61a. The edge 67 is composed of, for example, an annular member recessed in a semicircular cross section toward the inside of the housing 61, and is provided between the decorative panel 61a and the diaphragm 66. Specifically, the edge 67 is provided so as to close a part of the rear surface of the light guide body 66c and the opening of the decorative panel 61a. The edge 67 is, for example, black and has a light-shielding property. The edge 67 is not limited to the illustrated structure. For example, similarly to the edge 14 of the above-described embodiment (see FIG. 6), it may be composed of an annular member or the like projecting outward in a semicircular cross section toward the outside of the housing 61. In the above-described embodiment, as shown in FIGS. 5 and 6, the edge 14 is attached to the housing 2 of the speaker device 1 via the fixing member 15, but in this modification, the fixing member is attached. The structure is such that the edge 67 is attached to the housing 61 (decorative panel 61b) without intervention.

Here, the diaphragm 66 itself functions as a passive radiator weight. That is, the appearance panel 66a, the decorative cover 66b, and the light guide body 66c each also serve as a passive radiator weight, and the vibration condition such as the resonance frequency of the diaphragm 66 is adjusted. This eliminates the need to separately attach a passive radiator weight to the diaphragm 66. In addition to the appearance panel 66a, the decorative cover 66b, and the light guide body 66c, a passive radiator weight may be provided to adjust the vibration condition.

The speaker device 1B has a light emitting unit. The light emitting unit is provided for each passive radiator, for example. Here, the light emitting unit 68 corresponding to the passive radiator 65b shown in FIG. 12 will be described, but the same applies to the light emitting unit corresponding to the passive radiator 65a. The light emitting unit 68 irradiates the diaphragm 66 of the passive radiator 65b with light LT, and is composed of, for example, an LED substrate including the LED 68a. The LED 68a is, for example, a high-brightness three-color (red, blue, green) LED. The light emitting unit 68 is not limited to this, and may use a monochromatic LED or the like. Like the light emitting unit 8 according to the above-described embodiment and the light emitting unit 51 according to the modified example, the light emitting unit 68 is provided so as to be in non-contact with the diaphragm 66, that is, at a position separated from the diaphragm 66. As a result, the movable resistance of the passive radiator 65b can be eliminated, and the original function can be lit without being impaired. Further, the light emitting unit 68 can be prevented from vibrating together with the diaphragm 66. Specifically, the light emitting unit 68 is provided by a support member or the like so as to face a position that does not hinder the vibration of the diaphragm 66, for example, a position substantially at the center of the diaphragm 66 in the housing 61.

Here, in the illustrated example, a structure is shown in which the light LT of the LED 68a is irradiated to substantially the entire area of the rear surface of the diaphragm 66, but the peripheral edge of the rear surface of the diaphragm 66, in other words, The configuration may be such that the light guide body 66c portion is irradiated. Although not shown here, the light emitting unit 68 guides the light emitted from the LED 68a to the diaphragm 66 (specifically, the light guide body 66c) as in the embodiment (for example, a lens). , Reflector) may be included. By providing the light guide member, the light guide efficiency can be improved. Further, as shown in the drawing, the light emitting unit 68 is not limited to one provided in one passive radiator, and for example, a plurality of light emitting units 68 may be provided. Thereby, the brightness can be increased. Further, the light emitting unit 68 may be attached to the diaphragm 66. For example, the light emitting unit 68 may be configured to arrange the plurality of LEDs evenly in an annular shape in the ring of the light guide body 66c on the inner surface of the appearance panel 66a. In this case, for example, a plurality of LEDs may be provided instead of the light guide body 66c, or the plurality of LEDs may function as passive radiator weights. As described above, the diaphragm 66 itself, which is a movable portion of the passive radiator 65b, may have a structure that emits light.

The speaker device 1B has a strobe signal generator (not shown) as in the above-described embodiment. The strobe signal generator generates the blinking frequency of the LED 68a. The blinking frequency of the LED 68a is set to a frequency within a predetermined range from the reference frequency. The reference frequency is the maximum amplitude frequency f ₀ of the diaphragm 66. As described above, the blinking frequency of the LED 68a is set, for example, from the maximum amplitude frequency f ₀ to about ± 20 Hz. The light LT emitted from the LED 68a irradiates the diaphragm 66.

The amplitude of the diaphragm 66 can be obtained by a laser displacement meter, an acoustic measuring instrument, or the like, as in the case of the diaphragm 13 according to the embodiment. The frequency of the diaphragm 66 of the passive radiator 65b has a large amplitude determined by the spring constant (for example, determined by the environment and physical conditions) in the enclosed space inside the housing 61. That is, it does not change depending on the music to be played, and the band that moves the most is determined to be this band, and the band that moves the most can be set _{to the maximum amplitude frequency f 0.}

An operation example of the speaker device 1B will be described below. When the music signal is reproduced by the speaker device 1B and the speaker units 63a, 63b and the like are driven, air vibration is generated in the housing 61. Then, the passive radiator 65b operates by the air vibration, that is, the diaphragm 66 vibrates (acoustic movable). At this time, the LED 68a blinks at a predetermined frequency. The predetermined frequency is a frequency within a predetermined range from the reference frequency which is the maximum amplitude frequency f _{0 of the diaphragm 66.} By irradiating the diaphragm 66 with the light LT emitted from the LED 68a, the movement of the diaphragm 66 can be visualized.

Here, in this modification, the movement of the diaphragm 66 is visualized by indirect light. More specifically, when the light LT by the LED 68a is applied to the diaphragm 66, the light LT is emitted to the outside through the light guide body 66c. As shown in the figure, the light LT (indirect light) emitted from the light guide body 66c irradiates the edge 67 as the irradiation target portion and the front surface (outer surface) of the decorative panel 61b, and the irradiated portion is indirect light. It is visually recognized by the user as an area. This indirect light area changes according to the movement of the diaphragm 66. Since the LED 68a blinks at a predetermined frequency, the movement (transformation) of the indirect light area is visualized. That is, the movement of the diaphragm 66 is visualized by the movement of the indirect light emitted along the peripheral edge of the diaphragm 66.

FIG. 13 is a diagram for explaining an example of the relationship between the state of the diaphragm 66 and the change in indirect light. As shown in the figure, when the diaphragm 66 is in the foremost state due to vibration (the state in which the diaphragm 66 is located in the foremost side), the portion irradiated with indirect light becomes wider than in other cases. That is, in the figure, the width of the annular indirect light area AR shown in the gray area is the widest. On the other hand, when the diaphragm 66 is in the final state (the state in which the diaphragm 66 is located at the rearmost side) due to vibration, the portion irradiated with indirect light becomes narrower than in other cases. That is, the width of the annular indirect light area AR becomes the narrowest. In the case of the neutral state (the state between the foremost state and the last state), the indirect light is in the state between the foremost state and the last state.

By visualizing the movement of the diaphragm 66 using indirect light in this way, it is possible to diversify the visualization in addition to the effects in the above-described embodiment. In this modified example, it is possible to express (direct) the feeling of moving. By illuminating the edge portion of the diaphragm 66 in this way, for example, it is possible to express an indicator. It should be noted that the mode of expression (effect) by indirect light (for example, the member to be irradiated by the indirect light, its shape, the mode of change in the indirect light area, etc.) is not limited to the illustrated one. Further, the structure may be such that the entire diaphragm 66 is illuminated as in the embodiment with or without the use of such indirect light. For example, by using the appearance panel 66a as a translucent member, the entire diaphragm 66 can be illuminated. Further, as in the embodiment, irradiation may be performed from a light emitting portion provided on the front side of the diaphragm 66.

The configurations, methods, processes, shapes, materials, numerical values, etc. given in the above-described embodiments and modifications are merely examples, and different configurations, methods, processes, shapes, materials, numerical values, etc. may be used as necessary. Alternatively, it may be replaced with a known one. In addition, the configurations, methods, processes, shapes, materials, numerical values, and the like in the embodiments and modifications can be combined with each other as long as there is no technical contradiction.

It should be noted that the contents of the present disclosure are not construed as being limited by the effects exemplified in the present specification.

The present disclosure may also adopt the following configuration.
(1)
A light emitting part that blinks at a frequency within a predetermined range with respect to a predetermined reference frequency,
A speaker device having a diaphragm to which light from the light emitting unit is irradiated.
(2)
The speaker device according to (1), wherein the predetermined reference frequency is the maximum amplitude frequency at which the amplitude of the diaphragm is maximized.
(3)
The speaker device according to (1) or (2), wherein the light emitting unit has a frequency within a predetermined range with respect to the predetermined reference frequency and blinks at a preset frequency.
(4)
The speaker device according to (1) or (2), wherein the light emitting unit has a frequency within a predetermined range with respect to the predetermined reference frequency and blinks at a different frequency that can be switched.
(5)
The speaker device according to any one of (1) to (4), wherein the light emitting portion is provided on the side of the diaphragm in the direction of sound radiation.
(6)
The speaker device according to (5), wherein the light emitting unit is provided so as to face a substantially central position of the diaphragm.
(7)
The speaker device according to (5), wherein the light emitting unit includes a light guide member that guides light emitted from the light emitting unit to the diaphragm.
(8)
The speaker device according to any one of (1) to (7), wherein the light emitting portion is provided on the side opposite to the sound radiation direction side with respect to the diaphragm.
(9)
The speaker device according to any one of (1) to (8), wherein the light emitting unit includes one or a plurality of LEDs.
(10)
The speaker device according to any one of (1) to (9), wherein the diaphragm is a diaphragm of a speaker unit.
(11)
The speaker device according to any one of (1) to (9), wherein the diaphragm is a diaphragm of a passive radiator.
(12)
The speaker device according to any one of (1) to (11), wherein the light emitting unit is provided in non-contact with the diaphragm.
(13)
The speaker device according to (8), wherein the diaphragm includes a light guide body that guides light from the light emitting unit to the outside.
(14)
The speaker device according to (13), which has an irradiation target portion to which light from the light guide body is irradiated.
(15)
The speaker device according to (13) or (14), wherein the light guide body is provided on the inner peripheral edge of the diaphragm.
(16)
The speaker device according to (8), wherein the light emitting portion is provided so as to face a substantially central position of the diaphragm.
(17)
The speaker device according to (8), wherein the light emitting unit includes a light guide member that guides light emitted from the light emitting unit to the diaphragm.

1,1A, 1B ... Speaker device 7,33,34 ... Speaker unit 8,51,68 ... Light emitting unit 8a, 51a, 68a ... LED
8b, 51b ... Lens 13,41,66 ... Diaphragm 61a ... Decorative panel 65a, 65b ... Passive radiator 66c ... Light guide body 67 ... Edge

Claims (17)

A light emitting part that blinks at a frequency within a predetermined range with respect to a predetermined reference frequency,
A speaker device having a diaphragm to which light from the light emitting unit is irradiated. The speaker device according to claim 1, wherein the predetermined reference frequency is the maximum amplitude frequency at which the amplitude of the diaphragm is maximized. The speaker device according to claim 1, wherein the light emitting unit has a frequency within a predetermined range with respect to the predetermined reference frequency and blinks at a preset frequency. The speaker device according to claim 1, wherein the light emitting unit has a frequency within a predetermined range with respect to the predetermined reference frequency and blinks at a different frequency that can be switched. The speaker device according to claim 1, wherein the light emitting portion is provided on the side in the radiation direction of sound with respect to the diaphragm. The speaker device according to claim 5, wherein the light emitting portion is provided so as to face a substantially central position of the diaphragm. The speaker device according to claim 5, wherein the light emitting unit includes a light guide member that guides light emitted from the light emitting unit to the diaphragm. The speaker device according to claim 1, wherein the light emitting portion is provided on the side opposite to the sound radiation direction side with respect to the diaphragm. The speaker device according to claim 1, wherein the light emitting unit includes one or a plurality of LEDs. The speaker device according to claim 1, wherein the diaphragm is a diaphragm of a speaker unit. The speaker device according to claim 1, wherein the diaphragm is a diaphragm of a passive radiator. The speaker device according to claim 1, wherein the light emitting unit is provided in a non-contact manner with respect to the diaphragm. The speaker device according to claim 8, wherein the diaphragm includes a light guide body that guides light from the light emitting unit to the outside. The speaker device according to claim 13, further comprising an irradiation target portion to which light from the light guide body is irradiated. The speaker device according to claim 13, wherein the light guide body is provided on the inner peripheral edge of the diaphragm. The speaker device according to claim 8, wherein the light emitting portion is provided so as to face a substantially central position of the diaphragm. The speaker device according to claim 8, wherein the light emitting unit includes a light guide member that guides light emitted from the light emitting unit to the diaphragm.

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