JP6521680B2 - Sound control device for consciousness control, and home appliance provided with the same - Google Patents

Description

  The present invention relates to an awareness control sound emission device that performs control such that the sound environment in a residential space is comfortable, and a home appliance including the same.

  Heretofore, various techniques have been proposed for preventing sound leakage using a masking effect (see, for example, Patent Documents 1 and 2). The masking effect is that when two types of sound signals are propagated in the same space, one listener (in the space) hears the other sound (masking sound) and the noise is difficult to hear in the listener in the space. Phenomenon. Most of this type of technology radiates masking sound toward the area where the speaker that is the source of the target sound is located, and the adjacent area via a wall or screen. As the masking sound, a person's speech, an air conditioning sound, a sound of the natural world (for example, a wind or a wave), and the like are used.

  For example, when a conference is being performed in a conference area in an environment where the work area and the conference area are adjacent, in order to make it difficult to hear the talker's speech (noise) to the work area adjacent to the conference area Emits a sound (masking sound). This is a technology based on the idea of speech privacy, and by doing this, the speech of the conferee is transmitted to the work area and the person in the work area is not bothered, and Information is not leaked to people in the area.

  In addition, communication between equipment that generates the sound you want to hear (target sound) such as TV and radio via a communication means and equipment that generates noise such as a vacuum cleaner is performed, and if noise occurs, the volume of the target sound is automatic What makes target sound easy to hear by raising with is proposed (for example, refer to patent documents 3).

Patent No. 5103973 gazette JP, 2012-194528, A JP, 2014-100281, A

  However, in the prior art as described in Patent Documents 1 and 2, in the case where the target sound which is the sound to be heard is present in the same space in addition to the noise which is the sound which you do not want to hear There is a problem that masking makes it difficult to hear the target sound.

  Moreover, although the said technique can also be applied to a general household, when using the sound of an air conditioner as a masking sound, for example, in order to put out the sound of a ventilation fan in a general household, a temporary effect is acquired with respect to the sound of a ventilation fan. However, due to the difference in frequency characteristics, there is a problem that the masking sound can be heard as noise. In addition, when a natural sound is used as a masking sound, it is a sound that can not be heard in ordinary homes, so the ability to hear such a sound gives an aurally unnatural sense, which is also aurally psychological. Also had the problem of giving discomfort.

  Further, since the conventional technology as described in Patent Document 3 is a simple sound pressure control, the audibility such as the frequency is not considered, that is, the acoustic characteristics of the living space are not considered, etc. In practice, when a person listens, there is a problem that it is difficult to obtain the effect of making the target sound easy to hear.

  The present invention has been made in consideration of the above problems, and makes it difficult to hear only the noise even when the target sound exists in the same space in addition to the noise (in order to make the noise inconspicuous) It is an object of the present invention to provide a sound control apparatus for controlling awareness, which can effectively make the target sound easy to hear (make it possible to concentrate on the target sound), and a home appliance provided with the same.

  The sound control apparatus for consciousness control according to the present invention is provided in a household appliance that generates a noise and includes a fan that generates a flow of air, has a vent opening through which the air passes, and is generated from the household appliance. A peak is present in a band other than the frequency band where a peak in the frequency characteristic of noise exists, and an awareness control sound for making the noise inconspicuous is emitted when the air passes through the vent opening.

  According to the sound control apparatus for consciousness control according to the present invention, the person in the consciousness control area is provided in the household electric appliance that generates the noise and radiates the consciousness control sound that makes the noise inconspicuous from the same direction as the noise. Noise and awareness control sound can be recognized as one sound. Therefore, when the target sound is present in the same living space in addition to the noise, the noise is made less noticeable and the target sound is made easier to hear by directing the consciousness of the person in the consciousness control area to the consciousness control sound. be able to.

It is a side view which shows the example of introduction of the sound emission apparatus for consciousness control which concerns on Embodiment 1 of this invention. It is a figure which shows the time-axis waveform of the sound source which concerns on Embodiment 1 of this invention. It is a figure which shows the frequency characteristic concerning Embodiment 1 of this invention. It is a figure which shows the evaluation result by the radiation presence or absence of the sound for consciousness control in the sound emission apparatus for consciousness control which concerns on Embodiment 1 of this invention. It is a schematic diagram of the ventilation fan provided with the sound emission apparatus for consciousness control which concerns on Embodiment 1 of this invention. It is a schematic diagram of the vacuum cleaner provided with the sound emission apparatus for consciousness control which concerns on Embodiment 2 of this invention.

  Hereinafter, embodiments of the present invention will be described based on the drawings. The present invention is not limited by the embodiments described below. Moreover, in the following drawings, the relationship of the magnitude | size of each structural member may differ from an actual thing.

Embodiment 1
FIG. 1 is a side view showing an introduction example of the consciousness control sound emission device 31 according to the first embodiment of the present invention.
In the first embodiment, in order to make the sound environment in the living space 100 comfortable, a consciousness control sound is used. Note that FIG. 1 shows an example in which the consciousness control sound emission device 31 is introduced into the living space 100 of a general household, and in the living space 100, the open kitchen 10 and the living room 20 are adjacent to each other and they are counter 19 It is divided by Moreover, the dotted line in FIG. 1 has shown the boundary line of the open kitchen 10 and the living 20. As shown in FIG. Further, arrow 16 in FIG. 1 is noise, arrow 17 is sound for awareness control, arrow 18 is propagation sound from noise fan 11 (noise + awareness control sound), and arrow 24 is propagation sound from TV 21. Each is shown.

  The consciousness control sound emission device 31 according to the first embodiment radiates a consciousness control sound, which is a sound that urges human beings' attention (interest and the like), from the same direction as the noise. Then, by making the listener recognize the noise and the awareness control sound as one sound (same sound) and directing the listener's awareness to the awareness control sound which is not an unpleasant sound, the noise which is an unpleasant sound Make it less noticeable.

  In the first embodiment, the ventilation fan 11 in the open kitchen 10 as a noise generation source (hereinafter referred to as a noise generation source) and the TV 21 in the living 20 as a target sound generation source (hereinafter referred to as a target sound generation source). An example is described. Furthermore, the audience 40 who is sitting on the sofa 22 of the living room 20 and is watching the TV 21 is the sound control target person for awareness control, and the sofa 22 and the audience 40 are the ventilation fan 11 which is a noise source and the target sound source. It is located in the awareness control area 23 between the TV 21 and the TV.

  Here, the consciousness control sound target person is a person whose target sound can be easily heard by radiating the consciousness control sound, and the consciousness control area 23 is an area where the consciousness control sound target person is present. This is an area where the target sound can be easily heard by making the noise inconspicuous with the awareness control sound.

  As the awareness control sound, in order to make the noise unnoticeable, a sound that has frequency characteristics different from the frequency characteristics of the noise and urges a human's perceptive attention (interest or the like) is used. Specifically, when noise and awareness control sounds are recognized as one sound from the results of subjective evaluation experiments conducted in advance and physiological response experiments (such as heart rate and brain waves), The frequency determined not to be used is used.

  In addition, as noise generation sources other than the ventilation fan 11, there are a dishwasher, an air conditioner, a refrigerator, a microwave oven and the like, and other target sound generation sources include a radio, a component, an instrument and the like.

  When the cooker 41 in the open kitchen 10 operates the ventilation fan 11 to perform cooking, the propagation sound (hereinafter also referred to as noise) from the ventilation fan 11 is transmitted to the viewer 40 who is watching the TV 21 in the living room 20 Do. Therefore, it is difficult for the viewer 40 to hear the propagation sound (target sound) from the TV 21 due to the noise.

  Therefore, in the first embodiment, the consciousness control sound is emitted from the same direction as the noise, and the target person for the awareness control sound is made to recognize the noise and the sound for the awareness control as one sound (same sound), By directing awareness to the control sound, the sound (noise) of the ventilation fan 11 is made less noticeable, and the effect that the viewer 40 can easily hear the sound of the TV 21 (target sound) is used.

  The consciousness control sound radiation device 31 emits a consciousness control sound, and is disposed closer to the ventilation fan 11 which is a noise source than the consciousness control area 23. The reason is to radiate the consciousness control sound from the same direction as the noise, and to allow the person for consciousness control sound to recognize the noise and the sound for consciousness control as one sound.

  When the consciousness control sound emission device 31 is disposed at a position opposite to the ventilation fan 11 with respect to the consciousness control area 23, the person for the sound for the consciousness control has different noises and sounds for the consciousness control. It will be recognized as When this happens, the target sound for consciousness control sound is made to recognize noise and sound for consciousness control as one sound, and by directing awareness to the sound for consciousness control which is not unpleasant sound, noise which is unpleasant sound is obtained. It will not be possible to make it inconspicuous.

  In the first embodiment, the consciousness control sound radiation device 31 is provided in the intake port 13 formed on the front side of the housing 12 of the ventilation fan 11, and the air generated along with the driving of the blower 14 of the ventilation fan 11 is generated. By passing through the ventilation opening 32 formed in the consciousness control sound emission device 31, a consciousness control sound is generated. That is, at the same time the noise generated with the driving of the blower 14 is radiated through the air inlet 13, the awareness control sound generated by the air passing through the ventilation opening 32 is also radiated to the viewer 40. Note that the consciousness control sound radiation device 31 may be provided in the entire intake port 13 or may be provided in a part of the intake port 13.

  FIG. 2 is a diagram showing a time-axis waveform of a sound source according to Embodiment 1 of the present invention, and FIG. 3 is a diagram showing frequency characteristics according to Embodiment 1 of the present invention. The horizontal axis in FIG. 2 represents time (mS), and the vertical axis represents the output voltage (V). FIG. 2 (a) shows the time axis waveform of the ventilation fan 11 which is a sound source according to the first embodiment. (Analog signal) is shown, and FIG. 2B shows a time axis waveform (analog signal) of the TV 21 which is a sound source according to the first embodiment. The horizontal axis in FIG. 3 represents frequency (Hz) and the vertical axis represents amplitude (dB). FIG. 3 illustrates the fast Fourier transform (FFT) after converting the time axis waveform of FIG. 2 into a digital signal. It shows the frequency characteristics obtained by processing.

  Here, it is difficult to say that the sound of the TV 21 is various media such as music, drama, movie, news and the like depending on the media to be broadcast / reproduced, and it is not a stationary acoustic characteristic. Although there are differences between male and female voices that are included in the broadcast, there is a characteristic that the feature amount is in the frequency band from 500 Hz to 3 kHz.

  Among human auditory characteristics, 1 kHz has the most audible characteristic as seen in the known Zwicker loudness curve (not shown), and the auditory response is dull at low frequencies. In addition, it is known that the frequency band up to around 3 kHz is the easiest to hear in consideration of high frequency and age.

  In fact, in the frequency characteristic of the sound propagating from the TV 21 etc., the sound that can be explained in the above-mentioned frequency band 500 Hz to 3 kHz is propagated. Therefore, in order to make it easy to hear the sound from the TV 21 or the like, it is important to be able to reliably hear the sound in the 500 Hz to 3 kHz band.

  As awareness control sound that is most effective for each noise, as shown in Fig. 3, sound with frequency characteristics where the peak exists in a band other than the frequency band where the peak in the noise frequency characteristics exists Make it a sound. The purpose is to direct the consciousness control sound target to the consciousness control sound target person and to make the noise inconspicuous, so the consciousness is in a band other than the frequency band where the peak that is the characteristic frequency characteristic of the noise exists. By matching the peaks of the control sound, the noise can be made inconspicuous.

  In addition, the sound pressure level of the awareness control sound is such that the average sound pressure level of the peak in the frequency characteristics of the awareness control sound is up to about 3 dB lower than the average sound pressure level of the peak in the noise frequency characteristics. It is formed in. The reason for adjusting the sound pressure level in this way is that the highest effect is obtained from the evaluation result described later. This effect has also been confirmed from the results of subjective evaluation experiments, physiological response evaluation experiments and the like.

  FIG. 4 is a diagram showing an evaluation result based on the presence / absence of radiation of the consciousness control sound in the consciousness control sound radiation device 31 according to the first embodiment of the present invention. 4 (a) shows the audible response to the sound (noise) of the ventilation fan 11 by the presence or absence of the radiation for the awareness control sound, and FIG. 4 (b) shows the sound of the TV 21 due to the radiation presence / absence for the awareness control sound About the sensitivity of the hearing with respect to the target sound), the result of having carried out the subjective evaluation with a seven-step semantic scale using an adjective pair with respect to 50 persons with normal hearing who sat on sofa 22 of living 20 shown in FIG. 1 is shown.

  Also, in FIG. 4, ▪ indicates no emission of consciousness control sound, Δ indicates emission of consciousness control sound (A type), and ○ indicates a result of emission of consciousness control sound (B type), Between-,-, and-of ○, △, and △ indicate deviation ranges by 50 persons. Note that consciousness control sound (type A) is the sound for awareness control whose sound pressure level of the peak in the frequency characteristic is equal to the sound pressure level of the peak in the frequency characteristic of the noise. The control sound (B type) is an awareness control sound in which the average sound pressure level of the peak in the frequency characteristic is 3 dB lower than the average sound pressure level of the peak in the frequency characteristic of the noise.

  As shown in FIG. 4 (a), according to the hearing-impaired person sitting on the sofa 22 of the living room 20, a large proportion of people felt that the sound of the ventilation fan 11 was "unpleasant" without radiation of the awareness control sound. However, with radiation of the awareness control sound (type A), the proportion that feels "not both" increases, and with radiation of the awareness control sound (type B), the proportion that feels "not uncomfortable" You can see that it has increased.

  That is, it can be confirmed that the sound of the ventilation fan 11 is hard to hear (the noise is not noticeable) by radiating the awareness control sound, and furthermore, it is felt that the awareness control sound (type B) is not the most unpleasant. Can be confirmed. This is because when the control sound and the noise are reproduced at the same sound pressure level, various sounds appear to be generated randomly, and the sound of the hearing control person is directed to the sound of the normal hearing person. It is because you can not get rid of it.

  Therefore, it seems that various sounds are randomly generated by lowering the average sound pressure level of the peak in the frequency characteristic of the sound for awareness control to the average sound pressure level of the peak in the frequency characteristic of noise. It is possible to control the hearing control sound and direct the hearing control person's awareness to the control sound. And what feels most comfortable from the evaluation result is when the average sound pressure level of the peak in the frequency characteristics of the sound for awareness control is lowered by up to about 3 dB with respect to the average sound pressure level of the peak in the frequency characteristics of noise It is.

  If the average sound pressure level of the peak in the frequency characteristics of the awareness control sound is lower than 3 dB with respect to the average sound pressure level of the peak in the noise frequency characteristics, then the awareness control sound is gradually generated. The noises are also noticeable, and on the contrary, they feel uncomfortable. Therefore, it is preferable to set the average sound pressure level of the peak in the frequency characteristic of the awareness control sound to at most 5 dB with respect to the average sound pressure level of the peak in the frequency characteristic of noise.

  Also, as shown in FIG. 4B, according to the hearing-impaired person sitting on the sofa 22 of the living room 20, there was a high percentage of feeling that the sound of the TV 21 is "hard to hear" without radiation of the awareness control sound. In the presence of radiation for consciousness control sound (type A), the proportion that feels "Neither" is increased, and in the presence of emission of sound for awareness control (type B), the proportion that feels "sufficiently audible" is increased. I understand that

  That is, it can be confirmed that the sound of the TV 21 can be easily heard (the environment where the user can concentrate on the target sound) by emitting the awareness control sound. Furthermore, it can be confirmed that the consciousness control sound (type B) is most effective.

FIG. 5 is a schematic view of the ventilation fan 11 provided with the consciousness control sound emission apparatus 31 according to the first embodiment of the present invention.
In the first embodiment, the consciousness control sound radiation device 31 is provided in the intake port 13 formed on the front side of the housing 12 of the ventilation fan 11 and has a ventilation opening 32, and the air is driven by the blower 14. The flow of air is generated, and the accompanying air passes through the ventilation opening 32 to generate an awareness control sound. That is, at the same time the noise generated with the driving of the blower 14 is radiated through the air inlet 13, the awareness control sound generated by the air passing through the ventilation opening 32 is also radiated to the viewer 40.

  The ventilation openings 32 of the consciousness control sound radiation device 31 are not a single simple opening shape / area, but a plurality of types (3 types in the first embodiment) having different areas. The air flow is generated by the drive of the blower 14 and the air flows in the ventilation fan 11, but the air passes through the ventilation opening 32 and is sucked into the ventilation fan 11. At that time, at the end portion forming the ventilation opening 32 of the consciousness control sound emission device 31, the air flow is disturbed to generate a vortex, and a fluid sound is generated, and it passes through each ventilation opening 32 having different areas. Because the flow velocity is different, fluid sound of different frequency is generated and emitted.

  The frequency of the fluid sound corresponds to a band other than the frequency band where the peak that is the characteristic frequency characteristic of the noise of the blower 14 as described above exists, and the area of the ventilation opening 32 is such that it can be a sound for awareness control. It has been adjusted. In the case where there are a plurality of operation modes (rotational speeds) of the ventilation fan 11, the ventilation openings 32 may be provided as much as the mode can be.

  Further, the consciousness control sound emission device 31 is configured to be removable from the housing 12 of the ventilation fan 11. Therefore, it is possible to drive the blower 14 of the ventilation fan 11 by attaching the sound control device 31 for consciousness control only when it is desired to radiate the sound for consciousness control into space, and remove the sound emission device 31 for consciousness control when unnecessary. The ventilation function by the ventilation fan 11 can be performed.

  As described above, according to the consciousness control sound emission apparatus 31 according to the first embodiment, the consciousness control sound is emitted from the same direction as the noise. Then, the target for control of sound for awareness control is made to recognize the noise and the sound for control for control as one sound (same sound), and the target for control of sound for target for control of consciousness is directed to the sound for control of consciousness that is not unpleasant. By making the noise, the unpleasant noise is made less noticeable. By doing so, in the case where the target sound exists in the same space in addition to the noise, it is possible to make the target sound easy to hear (make it an environment in which the target sound can be concentrated).

  Also, as the sound for awareness control, adjust the peak to a band other than the frequency band where the peak that is the characteristic frequency characteristic of noise is present, and set the average sound pressure level of the peak to the average sound of the peak in the frequency characteristic of noise Since the pressure is formed to be up to about 3 dB lower than the pressure level, it is possible to form a space in which the noise is inconspicuous and the target sound can be easily heard.

  In addition, the sound control device for sound control 31 is configured to generate sound for sound control when the air accompanying the drive of the blower 14 passes through the ventilation opening 32, so a sound radiating means such as a speaker is separately provided. It is possible to emit the sound for awareness control at low cost without providing it.

  Further, since the consciousness control sound emission device 31 is provided at the intake port 13 of the ventilation fan 11, the intake port 13 is a noise emission position at the intake port 13 where noise is easily emitted toward the viewer 40 of the TV 21. Can emit a consciousness control sound together, and the viewer 40 can be controlled effectively.

  Further, since the consciousness control sound radiation device 31 has a plurality of ventilation openings 32 of different areas, when there are a plurality of peaks that are characteristic frequency characteristics of noise, the peaks of bands other than the frequency band are In the form of having a plurality of peaks to be matched, it is possible to generate an awareness control sound that makes it easy to hear the target sound.

  Furthermore, since the consciousness control sound radiation device 31 is configured to be removable from the ventilation fan 11, the equipment manufacturer side needs the lineup as an option or an option for a loud sound model, or when the user wants to operate in a loud sound mode. Only the sound control device for consciousness control 31 can be attached, and when priority is given to the air flow performance (air cleaning etc.) of the equipment, it can be removed if you want to wash etc., and usage according to the scene and sales form becomes possible. . In addition, in FIG. 5, the sound emission apparatus 31 for consciousness control may be formed using the housing 12 of the ventilation fan 11, a part of design member, etc. According to it, according to the external appearance, it does not care about a separately dedicated member The sound emission device 31 for consciousness control can be attached without providing the.

  In the first embodiment, an example is shown in which the awareness control sound emission device 31 is introduced into the living space 100 including the open kitchen 10 and the living room 20, which is a relatively narrow space, but it is not limited thereto. It may be introduced into a wider space. Also, when there are multiple noise generation sources, installing the awareness control sound emission device 31 in the vicinity of each noise makes the noise inconspicuous over a wide range and makes it easier to hear the target sound (an environment where it is possible to concentrate on the target sound Can be

Second Embodiment
FIG. 6 is a schematic view of the vacuum cleaner 51 provided with the consciousness control sound emission apparatus 33 according to the second embodiment of the present invention.
Hereinafter, the second embodiment will be described, but the same parts as those in the first embodiment will be omitted, and the same or corresponding parts as those in the first embodiment will be denoted by the same reference numerals.

In the second embodiment, a case where a vacuum cleaner 51 is assumed as a noise generation source as shown in FIG. 6 will be described.
In the second embodiment, the consciousness control sound emission device 33 is provided in the exhaust port 53 formed on the back side of the case 52 of the vacuum cleaner 51, has a ventilation opening 34, and is driven by the blower 54. A flow of air is generated, and the accompanying air passes through the ventilation opening 34 to generate an awareness control sound. That is, at the same time the noise generated with the driving of the blower 54 is radiated through the exhaust port 53, the awareness control sound generated by the air passing through the ventilation opening 34 is also radiated to the viewer 40.

  The ventilation opening 34 is not a single simple opening shape / area but a plurality of types (three types in the second embodiment) having different areas. At the same time as the air flows into the cleaner 51 by the drive of the blower 54, the air passes through the exhaust port 53. At this time, the air flow is disturbed at the end portion forming the ventilation opening 34 of the sound control device 33 for consciousness control, thereby generating a vortex and generating a fluid sound, and passing through each ventilation opening 34 having different areas. Because the flow rates are different, fluid sounds of different frequencies are generated and emitted.

  The frequency of the fluid sound corresponds to a band other than the frequency band where the peak that is the characteristic frequency characteristic of the noise of the fan 54 as described above exists, and the area of the ventilation opening 34 is such that it can be an awareness control sound. It has been adjusted. In the case where there are a plurality of operation modes (rotational speed) of the vacuum cleaner 51, the ventilation openings 34 may be provided as many as can correspond to the modes.

  Further, the consciousness control sound emission device 33 is configured to be removable from the housing 52 of the cleaner 51. Therefore, it is possible to drive the blower 54 of the vacuum cleaner 51 by attaching the sound control device 33 for consciousness control only when you want to radiate the sound for awareness control in space, and remove the sound emission device 33 for consciousness control when it is unnecessary The vacuum cleaner 51 can perform the function of suctioning dust.

  As described above, according to the consciousness control sound emission device 33 according to the second embodiment, the consciousness control sound is emitted from the same direction as the noise. Then, the target for control of sound for awareness control is made to recognize the noise and the sound for control for control as one sound (same sound), and the target for control of sound for target for control of consciousness is directed to the sound for control of consciousness that is not unpleasant. By making the noise, the unpleasant noise is made less noticeable. By doing so, in the case where the target sound exists in the same space in addition to the noise, it is possible to make the target sound easy to hear (make it an environment in which the target sound can be concentrated).

  Further, since the awareness control sound radiation device 33 is provided at the exhaust port 53 of the vacuum cleaner 51, it is transported to a wind speed where noise is higher than that of the air intake port (not shown), and the viewer 40 of the TV 21 is In the vacuum cleaner 51 which is easy to reach, an awareness control sound can be emitted together from the exhaust port 53 which is a noise radiation position, and awareness control can be performed effectively for the viewer 40.

  Reference Signs List 10 open kitchen, 11 ventilation fan, 12 housings, 13 intake ports, 14 blowers, 16 arrows (noise), 17 arrows (sound for awareness control), 18 arrows (propagating sound from ventilation fans), 19 counters, 20 living rooms, 21 TV, 22 Sofa, 23 Consciousness control area, 24 Arrow (propagated sound from TV), 31 Consciousness control sound emission device, 32 vent opening, 33 Consciousness control sound emission device, 34 vent opening, 40 viewers, 41 cooking Person, 51 vacuum cleaners, 52 housings, 53 exhaust ports, 54 blowers, 100 living space.

Claims (7)

It is provided in a household appliance that generates noise with a blower that generates an air flow,
Has a vent opening through which the air passes;
There is a peak in a band other than the frequency band where the peak in the frequency characteristic of the noise generated from the home appliance is present, and when the air passes through the ventilation opening, an awareness control sound that makes the noise inconspicuous Sound emission device for consciousness control characterized by emitting. The sound emission device for consciousness control according to claim 1, comprising a plurality of the ventilation openings different in area. The sound control system according to claim 1 or 2, wherein the air drawn into the home appliance emits the sound for controlling awareness when passing through the vent opening. The sound control apparatus according to claim 1 or 2 , wherein the air discharged from the home appliance emits the sound for controlling awareness when passing through the ventilation opening. The blower,
A household electrical appliance comprising the sound control apparatus for consciousness control according to any one of claims 1 to 4. A housing for housing the blower;
The household electric appliance according to claim 5, wherein the consciousness control sound radiation device is provided in the housing or integrally formed with the housing. The household electric appliance according to claim 6, wherein the consciousness control sound radiation device is detachably provided to the housing.

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