JP2022070997A - Sound collecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound collecting device whose operating status is easy to understand.

SOLUTION: A sound collecting device includes a light emission display unit composed of a light emission display device of a light emission display switch 10 that switches between a first display state in which light is emitted from the entire surface of a single light emitting surface and a second display state in which light is emitted from a part of the light emitting surface according to the operating state of a microphone 20.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a sound collecting device.

There may be a demand for a light emitting display device capable of uniformly emitting light on a light emitting surface having a certain area or emitting light only in a part of a region of the light emitting surface. In such a light emitting display device, it is assumed that a plurality of light sources are provided and only a part of the light emitting surface is turned on by lighting only a part of the plurality of light sources.

When only a part of the light emitting surface is made to emit light in this way, the boundary between this light emitting area and the adjacent extinguished area is clear, that is, the brightness changes stepwise at the boundary between the light emitting area and the extinguished area. Often it is ideal to do.

For example, Japanese Patent Application Laid-Open No. 2011-60706 describes a cone-shaped or bowl-shaped (bowl-shaped) light-shielding partition wall provided so as to partition between a plurality of LED light sources and a plurality of LED light sources, and an LED provided on the partition wall. A display device is disclosed having a plurality of lenses that change light emitted from a light source into upward parallel rays, and a diffuser plate that is arranged so as to cover the plurality of lenses and diffuses the parallel rays emitted from the lenses.

In the display device described in the above publication, the light emitted from the LED light source is changed into an upward parallel ray by a lens, so that the shape of the lens is complicated, and this lens is a factor that pushes up the manufacturing cost.

Display devices are provided in various devices, but sound collecting devices, such as audio input / output devices for remote conference systems, also require a display device for displaying the operating state of a microphone. As an example, Japanese Patent Application Laid-Open No. 2008-154055 discloses a video conference device including a liquid crystal display panel as a display device.

The liquid crystal display panel of the video conference device described in the publication can easily confirm the displayed contents only from the front of the device. Therefore, in the video conference device of the above publication, many of the participants seated around the device cannot confirm the operating state of the device, for example, whether or not the microphone is enabled.

Japanese Unexamined Patent Publication No. 2011-60706 Japanese Unexamined Patent Publication No. 2008-154055

In view of the above inconvenience, it is an object of the present invention to provide a sound collecting device whose operating state is easy to understand.

The sound collecting device according to one aspect of the present invention made to solve the above problems includes a microphone, a first display state in which light is emitted from the entire surface of a single light emitting surface, and light from a part of the light emitting surface. It is provided with a light emitting display unit that switches between a second display state for emitting light and a second display state according to the operating state of the microphone.

The operating state of the sound collecting device according to one aspect of the present invention is easy to understand.

It is a schematic cross-sectional view of the light emission display device of one Embodiment of this invention. It is a schematic cross-sectional view of the light emission display switch of one Embodiment of this invention. It is a schematic exploded perspective view of the light emission display switch of FIG. It is a schematic plan view of the light emission display switch of FIG. It is a schematic perspective view of the sound collecting device provided with the light emission display switch of FIG. FIG. 5 is a schematic perspective view showing a state in which the upper portion of the housing of the sound collecting device of FIG. 5 is removed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[Light emission display device]
FIG. 1 shows a light emitting display device according to an embodiment of the present invention. The light emission display device converts light rays incident from the first surface (back surface) into diffused light and emits light from a second surface (front surface: hereinafter may be referred to as light emitting surface S) opposite to the first surface. It includes a light guide member 1 and a plurality of point light sources 2 arranged at intervals on the back surface side of the light guide member 1.

In the present specification, the "front surface" and "back surface" are defined as the "front surface" on the observer side and the "back surface" on the opposite side, but the placement location and the placement direction of the light emitting display device are limited. Is not intended.

<Light guide member>
The light guide member 1 can be formed of a material having a transparent resin and a fine particle-like light diffusing material dispersed in the resin. The light guide member 1 internally scatters radial light rays emitted from a point light source 2 and incident on the back surface so that the light emitted from the light emitting surface S becomes mainly diffused light. As a result, the person observing from the front surface side of the light guide member 1 does not recognize the point light source 2 on the back surface side, but recognizes that the light emitting surface S of the light guide member 1 emits surface light.

The light guide member 1 divides the light emitting surface S into a plurality of light emitting regions A corresponding to one or a plurality of point light sources 2 directly below (two in the illustrated example, but may be three or more). It has a light-shielding structure that reduces the transmission of light rays to adjacent light-emitting regions.

The planar shape of the light emitting surface S can be any shape such as a square shape, a circular shape, an annular shape, and a strip shape. The shape of each light emitting region A is not particularly limited, but it is preferable that the light emitting surface S is defined by being divided by a straight line in terms of simplifying the light-shielding structure described later.

The lower limit of the vertical height (distance from the back surface to the front surface) of the light guide member 1 is the maximum value of the horizontal distance (distance in the direction along the surface where the point light source 2 is provided) from the point light source 2 to the center of the light shielding structure. 100% is preferable, and 120% is more preferable. On the other hand, as the upper limit of the vertical height of the light guide member 1, 200% of the maximum value of the horizontal distance from the point light source 2 to the center of the light shielding structure is preferable, and 180% is more preferable. If the vertical height of the light guide member 1 is less than the lower limit, the light incident from the point light source 2 cannot be sufficiently diffused, and the brightness variation of the light emitting surface S may become too large. On the contrary, when the vertical height of the light guide member 1 exceeds the upper limit, the thickness of the light emitting display device may be unnecessarily increased, and the light incident from the point light source 2 cannot be sufficiently transmitted. The brightness of the light emitting surface S may decrease.

The light-shielding structure can be configured to have a slit 3 formed so as to extend upward from the back surface side.

The slit 3 may be opened on the surface of the light guide member 1, but the slit 3 is not opened on the surface of the light guide member 1 so that the entire light emitting surface S can emit light (light is emitted from the entire light emitting surface S). It is preferably formed.

It is preferable that the slit 3 has a layer that does not transmit light inside in order to surely suppress the entry of light into the adjacent light emitting region A. Specifically, by inserting a light-shielding plate 4 into the slit 3 as shown in the figure or applying a paint that reflects or absorbs light to the inner surface of the slit 3, light can be prevented from crossing the slit 3. can do. In particular, by inserting the light-shielding plate 4, the boundary between the light-emitting region A that emits light and the light-emitting region A that is extinguished becomes clear while the light-emitting display device is relatively easy to manufacture. Therefore, the display of the light emission display device becomes easy to understand.

The minimum thickness of the portion of the light guide member 1 left on the front surface side (second surface side) of the slit 3, that is, the minimum thickness of the light guide member 1 in the front and back directions at the portion where the slit 3 is formed. The lower limit is preferably 0.5 mm, more preferably 0.8 mm. On the other hand, the upper limit of the minimum thickness of the portion of the slit 3 of the light guide member 1 left on the second surface side is preferably 3.0 mm, more preferably 2.0 mm. When the minimum thickness of the portion of the slit 3 of the light guide member 1 left on the second surface side is less than the lower limit, the brightness in the vicinity of the boundary becomes insufficient when the light emitting regions A on both sides are turned on. There is a risk that the light guide member 1 may be easily broken. On the contrary, when the minimum thickness of the portion of the slit 3 of the light guide member 1 left on the second surface side exceeds the upper limit, the amount of light transmitted to the adjacent light emitting region A cannot be sufficiently suppressed. When only one of the light emitting areas A on both sides is turned on, the boundary of the light emitting area A may become unclear.

The cross-sectional shape of the slit 3 is not limited to a substantially constant width, and may be a triangular shape or a tapered shape in which the width of the end portion on the light emitting surface S side or the entire width decreases toward the light emitting surface S. In particular, when the slit 3 opens to the light emitting surface S or when the minimum thickness of the light guide member 1 at the portion where the slit 3 is formed is reduced, the slit is used to clarify the boundary of the light emitting region A. It is preferable that the width of 3 decreases toward the light emitting surface S.

The lower limit of the average thickness of the light-shielding plate 4 inserted into the slit 3 (or the average distance of the outer surface of the layer that does not transmit the opposing light) is preferably 0.5 mm, more preferably 0.8 mm. On the other hand, the upper limit of the average thickness of the light-shielding plate 4 or the like is preferably 3.0 mm, more preferably 2.0 mm. If the average thickness of the light-shielding plate 4 or the like is less than the lower limit, it may be difficult to form the light-shielding plate 4 or the like. On the contrary, when the average thickness of the light-shielding plate 4 or the like exceeds the upper limit, the brightness in the vicinity of the boundary thereof may be insufficient when the light emitting regions A on both sides of the slit 3 are turned on.

The light guide member 1 may have a recess 5 on the back surface for receiving each point light source 2. By providing the recess 5 in this way, the light emitted by the point light source 2 can be efficiently taken into the light guide member 1. The shape of the concave portion may be, for example, a spherical surface, a cylindrical surface, or the like.

The lower limit of the maximum width of the recess 5 is preferably twice the maximum width of the point light source 2 to be accommodated, and more preferably three times. On the other hand, the upper limit of the maximum width of the recess 5 is preferably 50%, more preferably 40%, of the center distance between the point light source 2 and the adjacent point light source. If the maximum width of the recess 5 is less than the lower limit, the point light source 2 may not be reliably accommodated in the recess 5, or the light emitted from the point light source 2 may not be efficiently taken into the light guide member 1. be. On the contrary, when the maximum width of the recess 5 exceeds the upper limit, the light emitted from the point light source 2 may not be efficiently taken into the inside of the light guide member 1 due to the overlap with the adjacent recess 5 and the slit 3. ..

The lower limit of the maximum depth of the recess 5 is preferably 1.0 times, more preferably 1.5 times, the maximum height of the point light source 2 to be accommodated. On the other hand, as the upper limit of the maximum depth of the recess 5, 40% of the average thickness of the light guide member 1 (slit 3 and the recess 5 are not considered) is preferable, and 30% is more preferable. If the maximum depth of the recess 5 is less than the lower limit, the point light source 2 may not be accommodated in the recess 5, and processing accuracy and mounting accuracy may be excessively required. On the contrary, when the maximum depth of the recess 5 exceeds the upper limit, the effective height of the light guide member 1 may be insufficient and the brightness of the light emitting surface S may be uneven.

<Point light source>
As the point light source 2, for example, a light emitting diode, a halogen lamp, an incandescent light bulb or the like can be used, and among them, a light emitting diode having a small size and excellent energy efficiency is particularly preferably used. Further, the light emitting diode used as the point light source 2 may be one in which elements having different wavelengths are formed side by side and emit white light, or one in which the color of light can be selected. Further, by providing a plurality of point light sources 2 having different wavelengths in each light emitting region A, the color of the light emitting region A may be selectable.

It is preferable that the plurality of point light sources 2 are arranged at equal intervals as much as possible. By arranging the plurality of point light sources 2 at equal intervals, it is possible to reduce the variation in the brightness of the light emitting surface S.

The method of arranging the plurality of point light sources 2 is not particularly limited, but as shown in the figure, a plurality of point light sources 2 are mounted on the surface of a common substrate 6, and the relative positions of the substrate 6 and the light guide member 1 are relative to each other. Can be a method of fixing. As described above, by using the common substrate 6, a plurality of point light sources 2 can be accurately and easily arranged on the back surface side of the light guide member 1.

<Advantage>
The light emitting display device has a small number of parts, is relatively simple in configuration, and does not require high accuracy in the shape of each component. Therefore, the light emission display device can be manufactured at a relatively low cost.

Further, the light emission display device can emit light from the entire light emitting surface S if all the point light sources 2 are turned on, and if the point light source 2 in any of the light emitting regions A is selectively turned on, specific light emission is performed. Only the region A can be made to emit light. As a matter of course, the light emission display device may turn off all the point light sources 2 so that the entire light emitting surface S is not emitted. Therefore, the light emission display device can have at least four display modes including the extinguishing mode.

Further, since the light emission display device has a light-shielding structure that reduces the transmission of light rays to the adjacent light-emitting region A, the point light source 2 is turned on and the light-emitting region A and the point light source 2 are turned off to emit light. The boundary with the light emitting region A which is not used is clear. Therefore, it is easy for the light emission display device to determine the lighting state.

[Emission display switch]
2 to 4 show a light emitting display switch 10 according to an embodiment of the present invention.

The light emitting display switch 10 includes a light emitting display device 11 according to an embodiment different from that of FIG. 1 of the present invention, an operation member 12 that can be operated by a user, and a detection mechanism 13 that detects an operation by the user of the operation member 12. Be prepared.

<Light emission display device>
The light emission display device 11 is formed in a substantially tubular shape, and is arranged at a distance between a light guide member 1 that converts light rays incident from one end surface into diffused light and emits light from the front surface, and a light guide member 1 on the back surface side. A plurality of point light sources 2 and a plurality of light-shielding plates 4 inserted into a plurality of slits 3 formed in the light guide member 1 are provided. The light-shielding plate 4 is provided on an operation member 12 described later.

The light guide member 1 (including the slit 3 and the recess 5), the point light source 2, and the light shielding plate 4 of the light emitting display device 11 in the light emitting display switch 10 are not particularly mentioned. The configuration of 1 (including the slit 3 and the recess 5), the point light source 2, and the light-shielding plate 4 can be the same. Therefore, the same components are designated by the same reference numerals, and duplicate description will be omitted.

In the light emitting display device 11, the light guide member 1 has a cylindrical shape having axes in the front and back directions, and is formed in a tapered shape whose diameter decreases toward the surface side. Further, the radial width of the back surface of the light guide member 1 is larger than the radial width of the front surface (light emitting surface S). Further, the light guide member 1 has a plurality of recesses 5 on the back surface, each of which receives a point light source 2. A plurality of point light sources 2 are arranged in an annular shape on the substrate 6 along the back surface of the light guide member 1 in accordance with such a light guide member 1.

The taper angle of the light guide member 1 is preferably an angle that allows the center of each point light source 2 to be located outside the light emitting surface S when viewed from the surface side. By not arranging the point light source 2 directly under the light emitting surface S in this way, the amount of light emitted from the light emitting surface S through the point light source 2 traveling straight through the light guide member 1 can be reduced. Can be done. As a result, it is possible to make it difficult for the user to feel the presence of the point light source 2, and the effect of making the light emitting surface S appear to be emitting light on the surface is enhanced.

Further, by making the width of the back surface of the light guide member 1 in the radial direction larger than the width of the light emitting surface S, more light emitted from the point light source 2 is taken into the light guide member 1, and the light emitting surface S of the light emitting surface S. The brightness can be improved.

The light guide member 1 of the present embodiment has two slits 3, and the annular light emitting surface S is divided into two light emitting regions A1 and A2. More specifically, the annular light emitting surface S has a first light emitting region A1 in which one point light source 2 is arranged directly below, and a second light emitting region A2 in which four point light sources 2 are arranged directly below. .. The light emitting display switch 10 may display the operating state of the device selected by the light emitting display switch 10 depending on the state in which the entire light emitting surface S emits light and the state in which only the first light emitting region A1 emits light. It is planned.

The light emission display device 11 further includes a light-shielding cover 7 that covers the peripheral surface of the light guide member 1. By providing the cover 7, the light emission display device 11 prevents the light emitted from the point light source 2 from a place other than the light emitting surface S of the light guide member 1, for example, from the side, from leaking to the outside.

<Operating member>
The operation member 12 is arranged inside the light guide member 1. Therefore, the operating member 12 is formed in a frustum shape having a tapered outer peripheral surface along the inner peripheral surface of the light guide member 1, and the top surface is configured to be operated by the user. Further, the operation member 12 is provided with a light-shielding plate 4 so as to project vertically to the outer peripheral surface.

The operating member 12 can be integrally formed with the light-shielding plate 4 by using a material having a light-shielding property.

Further, the operating member 12 may have a region capable of transmitting light in the central portion in a plan view. In this case, the operation member 12 can be turned on by arranging the point light source 2 directly below the region where light can be transmitted. The light-transmitting region of the operating member 12 may be patterned in a plan view to form an arbitrary design. The operation member 12 can be used, for example, as a power display that lights up when the light emission display switch 10 is turned on.

In the present embodiment, the operation on the operation member 12 is an operation touched by the user. That is, the light emission display switch 10 is a touch sensor that detects that the user touches the operation member 12.

<Detection mechanism>
The detection mechanism 13 is an electric circuit including an electrode pattern 14 formed on a surface of the substrate 6 facing the operation member 12, and configured to detect a change in the capacitance of the operation member 12. Therefore, the detection mechanism 13 of the present embodiment has a conductive sponge 15 arranged in a compressed state between the operation member 12 and the substrate 6 so that the operation member 12 can be reliably connected to the electrode pattern 14.

<Advantage>
The light emitting display switch 10 can switch between a state in which the entire light emitting surface S emits light evenly and a state in which only a part of the light emitting region A1 emits light according to the operation of the operating member 12. Further, when only the light emitting region A1 emits light, the light emitting display switch 10 has a clear boundary, so that the user can easily grasp the operating state.

[Sound collector]
5 and 6 show a sound collecting device according to an embodiment of the present invention. The sound collecting device includes a light emitting display switch 10 of FIG. 2 and a microphone 20 whose operating state is switched according to the operation of the light emitting display switch 10. Further, the sound collecting device of the present embodiment further includes a speaker 30, and is configured to function as a remote conference terminal, that is, an audio input / output device of the remote conference system.

The "operating state" of the microphone 20 is not limited to the operation of the microphone 20 itself, for example, the arrangement state of the sound insulating member that hinders the incident of sound sound on the microphone 20, and the microphone before being output from the sound collecting device to the outside. It means the overall state of the device related to the sound collection of the microphone 20, including the signal processing method applied to the audio signal output from 20 and the setting state such as the amplification factor.

In the sound collecting device, these components are provided in the housing 40, and the light emitting surface S of the light guide member 1 of the light emitting display switch 10 and the surface of the operating member 12 touched by the user are exposed from the housing 40. are doing. The microphone 20 and the speaker 30 can be arranged inside the region where the sound wave of the housing 40 is formed, as in the present embodiment, but may be exposed from the housing 40.

In the sound collecting device, the light emitting display unit configured by the light emitting display device 11 of the light emitting display switch 10 emits light from the entire surface of a single light emitting surface S (first light emitting region A1 and second light emitting region A2). The first display state for emitting light and the second display state for emitting light from a part of the light emitting surface S (first light emitting region A1) can be switched according to the operating state of the microphone 20. That is, in the sound collecting device, the light emitting regions A1 and A2 for lighting the point light source 2 are switched according to the operating state of the microphone 20.

<Microphone>
The microphone 20 converts an external sound into an electric signal. The microphone 20 has two operating states, a mute-off state that outputs an electric signal and a mute-on state that does not output an electric signal, by operating the light emission display switch 10. More specifically, the detection mechanism 13 of the light emission display switch 10 It is switched when the operation of the operation member 12 is detected.

As the configuration of the microphone 20, any microphone such as a moving coil type microphone, a ribbon type microphone, and a condenser type microphone can be used. Further, although the microphone 20 is housed inside the device main body in the sound collecting device of the present embodiment, the microphone 20 may be provided so as to project from the device main body, for example, a gooseneck type microphone or the like.

Further, the microphone 20 may have directivity. Further, the sound collecting device may include a plurality of microphones. As a specific example, the sound collecting device may be provided with a microphone 20 having no directivity and a microphone 20 having directivity, and a plurality of microphones 20 having directivity are provided in different directions. You may. When a plurality of microphones 20 are provided, the sound collecting device may be configured so that the user can mute off only some of the microphones 20 by using a light emitting display switch 10 or other input means. , The direction in which the microphone 20 is in the mute-off state in the annular light emitting surface S of the light emitting display unit of the light emitting display switch 10, that is, the direction in which the microphone 20 can collect sound (output an electric signal). The light emitting region may emit light.

Further, the sound collecting device may be configured so that the strength (gain) of the audio signal output by the microphone 20 can be switched as the operating state of the microphone 20. In this case, the microphone 20 outputs, for example, the brightness, color, blinking pattern, etc. of the light emitting surface S of the light emitting display unit of the light emitting display switch 10, that is, the intensity, wavelength, blinking pattern, etc. of the light emitted by the point light source directly underneath. It may be changed according to the strength. When the sound collecting device includes a plurality of microphones 20 for which the intensity of the audio signal is adjusted, it is preferable that the brightness or color of the light emitting surface S is switched for each light emitting region.

In the sound collecting device, one microphone 20 may be associated with a plurality of light emitting regions of the light emitting surface S, and in this case, each light emitting region emits light with a brightness or a color indicating a gain in each corresponding direction of the microphone 20. You may.

Further, in the sound collecting device, one light emitting region of the light emitting surface S may correspond to a plurality of microphones 20. In this case, the color and brightness of the light emitting surface S may be a color or brightness in which colors indicating the states of the plurality of microphones 20 are superimposed. This superposition of colors may be a color obtained by additive mixing by superimposing light, or may be a color obtained by subtractive mixing by mixing inks.

As a specific example, when the sound collecting device has a microphone 20 having directivity and a microphone 20 having no directivity, when the microphone 20 having no directivity is in the mute-off state, the entire light emitting surface S is covered. When the microphone 20 having directivity is in the mute-off state, the light emitting region in the corresponding direction of the light emitting surface S is made to emit light in the second color, and the microphone 20 having no directivity and the directivity are emitted. When both microphones 20 are in the mute-off state, the region corresponding to the microphone 20 having the directivity of the light emitting surface S may emit light in a color in which the first color and the second color are mixed.

Further, the sound collecting device may be beamforming by a plurality of microphones 20. More specifically, the sound collecting device extracts only the sound from a specific direction by arithmetically processing the audio signals output by the plurality of microphones 20, and reduces the directional angle of the finally obtained audio signal. In the case of obtaining an audio signal having a small pointing angle as described above, the light emitting display device 11 may be configured to emit light in a light emitting region in a small angle range corresponding to the small pointing angle.

<Speaker>
The speaker 30 is a well-known mechanism that converts an electric signal into air vibration. When the sound collecting device is used as an audio input / output device for a remote conference system, the speaker 30 preferably has a large pointing angle from the viewpoint of providing uniform sound quality to a plurality of conference participants. .. When a single speaker 30 is provided, it is preferable to arrange the speaker 30 having a large directivity angle so as to generate sound upward.

Further, the sound collecting device may have a plurality of speakers 30 having directivity and different sound emitting directions, and may be configured so that the output can be stopped or the output level can be adjusted for each speaker 30. In this case, the light emitting region in the direction in which the speaker 30 emits sound may be turned on in the annular light emitting surface S of the light emitting display unit of the light emitting display switch 10, and the brightness or color corresponds to the output level of the corresponding speaker 30. Each light emitting region may be made to emit light. Further, the sound collecting device has a plurality of speakers 30 (array speakers) having substantially the same directivity (the directions may be slightly shifted), and is effective due to interference between the plurality of speakers 30. The directivity angles may be different, and the light emitting region in the direction corresponding to this effective directivity angle may be emitted.

In the sound collecting device, a microphone 20 is arranged on the front side of the device so as to collect sound from the front, and a speaker 30 is arranged so as to emit sound upward on the upper surface of the device from the rear side of the device away from the microphone 20. A light emitting display switch 10 is arranged between the microphone 20 and the speaker 30 in a plan view of the upper surface of the device. This makes it easy to operate the light emission display switch 10, and it is possible to suppress the microphone 20 from picking up the sound emitted by the speaker 30.

<Advantage>
The sound collecting device can selectively emit light from a plurality of light emitting regions A1 and A2, and includes a light emitting display switch 10 having a clear boundary between the light emitting regions A1 and A2, so that the user can easily operate the microphone 20. Can be grasped.

[Other embodiments]
The embodiments do not limit the configuration of the present invention. Accordingly, the embodiments may be omitted, replaced or added to components of each of the embodiments based on the description and common sense of the art, all of which are construed as belonging to the scope of the present invention. Should be.

In the light emitting display device, the light-shielding structure provided on the light guide member may be a structure other than the slit. Examples of the light-shielding structure other than the slit include a sheet inserted at the time of molding the light guide member, a wide groove, a notch, and the like.

In the light emission display device, the light guide member may not have a recess for receiving a point light source.

The planar shape of the light guide member of the light emitting display device is arbitrary, and the number and arrangement of point light sources directly underneath can be selected according to the shape and size of each light emitting region.

The configuration of the detection mechanism in the light emitting display switch is not particularly limited, and may be, for example, a contact mechanism for detecting the movement of the operating member, a pressure detecting mechanism for detecting the force acting on the operating member, or the like.

The speaker is not an indispensable configuration in the sound collecting device. Examples of the sound collecting device having no speaker include a broadcasting microphone device and the like.

Further, the embodiment of the sound collecting device of the present invention including the speaker is not limited to the one that functions as a remote conference terminal. As a specific example, a sound collecting device that is connected to the Internet and functions as a smart speaker that interacts with a user by voice by artificial intelligence is one of the typical embodiments of the sound collecting device of the present invention including the speaker.

The sound collecting device according to the present invention can be particularly suitably used for a remote conference system.

1 Light guide member 2 Point light source 3 Slit 4 Shading plate 5 Recess 6 Substrate 7 Cover 10 Light emission display switch 11 Light emission display device 12 Operation member 13 Detection mechanism 14 Electrode pattern 15 Conductive sponge 20 Microphone 30 Speaker 40 Housing S Light emitting surface A , A1, A2 light emitting area

Claims (8)

With a microphone
A light emitting display unit that switches between a first display state in which light is emitted from the entire surface of a single light emitting surface and a second display state in which light is emitted from a part of the light emitting surface according to the operating state of the microphone. A sound collecting device to be equipped. The sound collecting device according to claim 1, wherein the light emitting display unit emits light from a portion on the side where the microphone collects sound. Equipped with multiple microphones
The sound collecting device according to claim 2, wherein the sound collecting direction is determined by processing audio signals output by the plurality of microphones to obtain audio signals having different directing angles of sound collecting. The sound collecting device according to claim 1, claim 2 or claim 3, further comprising a speaker. The sound collecting device according to claim 4, wherein the light emitting display unit emits light from a portion on the side where the speaker emits sound. Equipped with multiple speakers
The sound collecting device according to claim 5, wherein the direction of sound emission is determined by different directivity angles due to interference between the plurality of speakers. The sound collecting device according to claim 4, claim 5 or claim 6, which functions as a remote conference terminal. The sound collecting device according to claim 4, claim 5 or claim 6, which functions as a smart speaker.

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