JP2004016522A - Speaker installed chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker installed chair, which does not blocks a seated person's view and prevents a deterioration in quality of sound to the seated person from speakers. <P>SOLUTION: The chair has a seat portion 1 and a backrest portion 2, and is provided with a headrest 3 at the upper part of the backrest 2. The speakers 5 are disposed on the right and left sides of the headrest 3, oriented to the ears 41 of the seated person, so as to be positioned at the end parts A1 or the vicinities of the end parts A1 of both sides of a visual field A with the front part when the seated person leans the head 4 against the headrest 3 as the center. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a speaker installation chair on which a speaker is installed.
[0002]
[Prior art]
Conventionally, a speaker installation chair in which a speaker is installed on a chair is used. The chair body includes a seat portion, a backrest portion, and a headrest provided on an upper portion of the backrest portion, and speakers are provided on left and right sides of the headrest.
[0003]
In such a speaker-installed chair, since only the occupant himself / herself listens to the sound from the loudspeaker, the loudspeaker is arranged in the vicinity of the occupant's ear so that the sound does not resonate as much as possible.
[0004]
However, if the speaker is arranged near the ear of the seated person, the speaker will obstruct the field of view of the seated person, and if the speaker is arranged at the rear part, the sound quality of the sound heard from the speaker will be poor.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of such a point, and an object of the present invention is to provide a speaker installation that does not obstruct the view of a seated person and prevents the sound quality of a sound heard from the speaker from being deteriorated. It is an object to provide a chair.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a speaker-installed chair according to the present invention comprises a chair having a seat portion 1 and a backrest portion 2 and a headrest 3 provided on an upper portion of the backrest portion 2, wherein a seated person has a head 4 The speakers 5 are respectively positioned on the left and right sides of the headrest 3 in the direction of the ears 41 of the occupants such that the speakers 5 are located outside the ends A1 on both sides of the field of view A with the front as the center when leaning against the headrest 3. Characterized by being arranged so as to face. With such a configuration, the speaker 5 does not need to be disposed within the view A of the seated person, so that the view A of the seated person is not obstructed, and the seated person does not feel discomfort.
[0007]
Further, it is preferable to dispose the speaker 5 on the side that makes an angle of about 90 ° from the front with respect to the seated person. With such a configuration, the speaker 5 can be disposed almost to the side of the seated person, and the sound from the speaker 5 enters perpendicularly to the ear 41 of the seated person and can be heard with good sound quality for the volume.
[0008]
Further, it is preferable that the speakers 5 be arranged horizontally. With such a configuration, space can be saved.
[0009]
Separate treble sound generators 51 and bass sound generators 52 are horizontally arranged side by side on the horizontally long speaker 5, and the treble sound generators 51 are arranged on the sides at an angle of approximately 90 ° from the front with respect to the occupant. Is preferred. With such a configuration, a high-pitched sound with a narrow directivity is perpendicular to the ears of the seated person and the sound quality heard by the seated person is improved.
[0010]
Further, it is preferable that the low-frequency sound generating section 52 of the speaker 5 in which the separate high-frequency sound generating section 51 and the low-frequency sound generating section 52 are formed be disposed behind the ear 41 of the seated person. With such a configuration, it is possible to prevent a low sound having a large sound pressure from entering the ears 41 perpendicularly so that a large load is imposed on the ears 41 of the seated person.
[0011]
In addition, it is preferable that sounds having substantially the same waveform are generated from the left and right speakers 5a and 5b with their phases shifted. With such a configuration, the seated person can hear the sound with the spread.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. As shown in FIG. 1, the speaker installation chair includes a seat 1 on which the buttocks of a human body are seated, and a backrest on which a seated person leans against a back so as to be continuously connected upward from a rear end of the seat 1. A headrest 3 provided at the upper end of the backrest portion 2 and against which the head 4 of the occupant rests, and a leg portion mounted on the floor from the seat portion 1 11 and armrests 12 on both sides of the seat 1. Further, the speaker 5 is provided on the headrest 3, the control unit 6 and the operation unit 7 are provided on the seat 1 and the armrest unit 12, respectively, and the control unit 6, the operation unit 7 and the speaker 5 are connected to the information line (not shown). )). The control unit 6 is provided inside or below the seat 1, and the operation unit 7 is provided on the upper surface of the armrest unit 12.
[0013]
As shown in FIGS. 1 and 2, the speakers 5 are provided with mounting portions 31 on both sides of the headrest 3 and are disposed inside the mounting portions 31. As shown in FIG. 2, the mounting portion 31 is configured so that the headrest 3 is positioned so as not to enter the view A of the occupant in the seat portion 1, that is, to be positioned outside (rearward) the side end A1 of the view A. It is formed on both sides. However, the field of view A in this case is the field of view when the occupant leans on the headrest 3 with the head 4 leaning forward D1. The speaker 5 (not shown in FIGS. 1 and 2) is provided inside the mounting portion 31.
[0014]
The speaker is disposed near the front end of the mounting portion 31, and is arranged such that the sound propagation direction from the sound generating portion (not shown) faces the ear 41 of the seated person. In particular, as shown in FIG. 3, the side D2 forms a 90 ° angle with the front D1 of the occupant, or the side D2 slightly, so that the sound enters vertically into the ear 41 of the occupant and is best heard by the occupant. The speaker 5 is disposed at the rear at an angle θ.
[0015]
According to the above configuration, by arranging the speaker 5 so as not to be located within the view A of the seated person, the seated person does not have an uncomfortable feeling without being obstructed by the view, and Since the sound propagation direction is directed to the direction of the ear 41 of the occupant, particularly, it is arranged almost to the side of the occupant, the sound from the speaker 5 enters perpendicularly to the ear 41 of the occupant, and the It sounds good.
[0016]
Further, it is preferable that the speakers 5 are arranged to be horizontally long (see FIG. 4). The mounting portion 31 of the speaker 5 is provided on the side of the headrest 3. By making the speaker 5 horizontally long, the horizontally long speaker 5 is arranged along the mounting portion 31 extending to the side (in the present embodiment, Buried) to save space.
[0017]
Next, another embodiment of the present invention will be described with reference to FIGS. In this case, the speaker 5 is arranged horizontally long as shown in FIG. 4 described above. In particular, as shown in FIG. 5, the treble generating section 51 and the bass generating section 52 are separately provided in the speaker 5, As shown in FIG. 6, the high sound generation unit 51 is arranged in the side direction D2 of the occupant, and the low sound generation unit 52 is arranged behind it. Since the treble has a narrow directivity and the bass has a wide directivity, by arranging it as in the present embodiment, the treble having a narrow directivity enters the seated person's ears vertically and the sound quality heard by the seated person is good. It is.
[0018]
Next, still another embodiment of the present invention will be described with reference to FIGS. This embodiment is substantially the same as the embodiment shown in FIGS. 5 and 6, except that the bass generating section 52 is arranged as far back as possible from the side of the seated person's ear. As shown in FIG. 7, the speaker 5 is formed in a substantially arc shape curved along the mounting portion 31 of the headrest 3, and compared to the speaker 5 shown in FIG. Are placed apart from each other. As shown in FIG. 7, the speaker 5 is curved and formed in a substantially arc shape, so that the speaker 5 can be arranged along the mounting portion 31 even if the high sound generation section 51 and the low sound generation section 52 are arranged apart from each other. FIG. 8 shows the arrangement of the speakers 5. In this example, the speakers 5 are shown at a position separated from the mounting portion 31 for convenience.
[0019]
In order to hear the bass at the same level as the treble, it is necessary to listen at a sound pressure greater than that of the treble. In this case, a heavy load is imposed on the ears 41 of the seated person. By locating 52 behind the side of the ear 41 of the seated person, since a low sound of a large sound pressure does not enter the ear 41 vertically, it is possible to prevent a large burden on the ear 41 of the seated person.
[0020]
Next, still another embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the phases of the sound waveforms of the speakers 5 (5a, 5b) arranged on the left and right are shifted.
[0021]
As shown in FIG. 9, the control unit 6 includes an amplifier circuit 61 and a regenerator 63, and the amplifier circuit 61 is further provided with a phase delay circuit 62. The reproducer 63 separately converts left and right sound information from a sound source medium (for example, a CD, DVD, video tape, or TV) into voltage changes and inputs the converted information to the amplifier circuit 61. The amplifier circuit 61 not only amplifies the left and right sound information but also shifts the phase by a phase delay circuit 62. As shown in FIG. 10, the original output signal of the sound information is the same for both the left and right speakers, but the right output signal and the left output signal are input to the left and right speakers 5a and 5b by the phase delay circuit 62 with a time lag of T2. , Sound.
[0022]
By doing so, it is possible to hear a sound having a spread in a narrow space (that is, a space surrounded by the mounting portion 31 of the headrest 3).
[0023]
As a means for shifting the phase of the sound, the sound may be spread using a DSP or the like without using the phase delay circuit 62 as in the present embodiment.
[0024]
【The invention's effect】
As described above, in the invention according to claim 1 of the present invention, a chair having a seat portion and a backrest portion and a headrest provided on an upper portion of the backrest portion, and a seated person holding the head on the headrest. Since the speakers are arranged on the left and right sides of the headrest so as to face the direction of the occupant's ears so as to be located outside or on both ends of the field of view centered on the front when leaning, Without placing a speaker in the field of view of the user, the field of view of the seated person is not hindered, and there is no feeling of oppression and a great relaxing effect can be obtained.
[0025]
According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the speakers are arranged on the sides at an angle of approximately 90 ° from the front with respect to the seated person, so that the speakers can be seated. The sound from the loudspeaker enters the ears of the occupant perpendicularly to the occupant's ears, so that the sound can be heard with good sound quality for the sound volume, and a greater relaxing effect can be obtained.
[0026]
According to the third aspect of the present invention, in addition to the effects of the first aspect of the present invention, the speakers are arranged horizontally, so that space can be saved.
[0027]
According to a fourth aspect of the present invention, in addition to the effects of the third aspect of the present invention, a high-frequency sound generating section and a low-frequency sound generating section are separately provided in a horizontally elongated speaker, respectively, in a horizontal direction. The generator is located on the side of the occupant at an angle of approximately 90 ° from the front, so the high-pitched narrow sound enters the occupant's ears vertically and the sound quality heard by the occupant is improved, resulting in a greater relaxation effect. Is obtained.
[0028]
According to a fifth aspect of the present invention, in addition to the effects of the third aspect of the present invention, the low-tone generating portion of the loudspeaker in which the separate high-tone generating portion and the low-tone generating portion are formed has an ear of a seated person. Is located behind the side of the vehicle, so that low-pitched sounds with large sound pressure do not enter the ears vertically, which can prevent a large burden on the occupant's ears and reduce the relaxing effect even when used for a long time. Nothing.
[0029]
According to the sixth aspect of the present invention, in addition to the effect of the first aspect of the present invention, since the left and right speakers generate sounds having substantially the same waveform with a phase shift, the speakers are placed in the ears of the occupant. A wide sound can be heard by the occupant in a narrow space close to.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a speaker installation chair of the present invention.
FIG. 2 is a plan view of a main part of the above.
FIG. 3 is a plan view of a main part of another example of the above.
FIG. 4 is a side view of a main part of still another example of the above.
FIG. 5 is a front view of the speaker.
FIG. 6 is a plan view of a main part of another embodiment of the present invention.
FIG. 7 shows a speaker according to still another embodiment of the present invention, wherein (a) is a front view and (b) is a side view.
FIG. 8 is a plan view of a main part of the above.
FIG. 9 is a configuration diagram of a main part of still another embodiment of the present invention.
FIG. 10 is a diagram showing an original sound waveform and different-phase sound waveforms input to left and right speakers in the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat part 2 Backrest part 3 Headrest 4 Head 41 Ears 5 Speaker A View A1 End

Claims (6)

In a chair having a seat portion and a backrest portion and a headrest provided on the upper portion of the backrest portion, outside of both ends of the field of view centered on the front when the seated person leans the head on the headrest. Alternatively, a speaker-installed chair, wherein speakers are arranged so as to be located near the ends so as to face the ears of the occupant on the left and right sides of the headrest, respectively. 2. The speaker installation chair according to claim 1, wherein the speaker is arranged on a side at an angle of about 90 [deg.] From the front with respect to the seated person. The speaker installation chair according to claim 1, wherein the speakers are arranged horizontally long. Separate treble generators and bass generators are separately arranged in the speaker in the horizontal direction, and the treble generators are arranged on the sides at an angle of approximately 90 ° from the front with respect to the occupant. The speaker installation chair according to claim 3. 4. The speaker installation chair according to claim 3, wherein the low sound generating portion of the speaker, in which the separate high sound generating portion and the low sound generating portion are formed, is disposed behind the side of the ear of the occupant. 2. The speaker installation chair according to claim 1, wherein sounds of substantially the same waveform are generated from the left and right speakers with a phase shift.

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