Patent Publication Number: US-2021188141-A1

Title: Vehicle seat and vehicle headrest

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2019-228516 filed on Dec. 18, 2019, the disclosure of which is incorporated by reference herein. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a seat for a vehicle and to a headrest for a vehicle. 
     Related Art 
     Japanese Patent Application Laid-Open (JP-A) No. 2008-295597 discloses a headrest incorporating a film speaker that serve as an electronic apparatus. In the headrest recited in JP-A No. 2008-295597, one end side of a lead cable is connected to the film speaker and another end side of the lead cable is connected to an amplifier via the interior of a stay member. 
     In a case in which a vehicle seat is tilted in order to enlarge a luggage compartment or the like, an operation to detach a headrest from a seat back may be required. However, in the headrest recited in JP-A No. 2008-295597, because the lead cable extends from the headrest to the seat back through the stay member, it may not be easy to detach the headrest. 
     SUMMARY 
     The present disclosure provides a vehicle seat and a vehicle headrest that, in a configuration in which an electronic apparatus is incorporated in a headrest main body portion, may enable easy detachment of the headrest. 
     A vehicle seat of a first aspect of the present disclosure includes: a seat back rotatably connected to an end portion at a seat rear side of a seat cushion; an electric power supply portion provided at an outer face of the seat back; a headrest main body portion removably attached to the seat back, an electronic apparatus being incorporated in the headrest main body portion, and the electronic apparatus being operable due to electric power being supplied thereto; and a power supply line that extends from the headrest main body portion and is connectable to the electric power supply portion. 
     In the first aspect of the present disclosure, the seat back is rotatably connected to the end portion at the seat rear side of the seat cushion. The electric power supply portion is provided at the outer face of the seat back. The headrest main body portion is removably attached to the seat back. The electronic apparatus is incorporated in the headrest main body portion, and the power supply line extends from the headrest main body portion. The power supply line may be connected to the electric power supply portion provided at the outer face of the seat back. Hence, electric power may be supplied from the electric power supply portion to the headrest main body portion via the power supply line. 
     Because the electric power supply portion is provided at the outer face of the seat back, the power supply line may be detached from the electric power supply portion easily. 
     In second aspect of the present disclosure, in the first aspect, a battery may be provided inside the headrest main body portion, and the battery may be chargeable by electric power supplied from the electric power supply portion via the power supply line. 
     In the second aspect of the present disclosure, the battery may be charged up, and the electronic apparatus incorporated in the headrest main body portion may be used even in a state in which the headrest is detached from the seat back. 
     In a third aspect of the present disclosure, in the first aspect or the second aspect, the electric power supply portion may include a connection port to which the power supply line is connectable, the connection port opening toward a side thereof at which the headrest main body portion is disposed. 
     In the third aspect of the present disclosure, because the connection port of the electric power supply portion opens to the side thereof at which the headrest main body portion is disposed, the power supply line extending from the headrest main body portion may be connected to the connection port easily. 
     In a fourth aspect of the present disclosure, in the third aspect, in addition to the connection port, the electric power supply portion may further include an other-apparatus connection port to which another electronic apparatus is connectable. 
     In the fourth aspect of the present disclosure, the electric power supply portion is equipped with the other apparatus connection port to which the another electronic apparatus may be connected. Thus, an electronic apparatus such as a smart phone carried by a vehicle occupant or the like may be charged. 
     In a fifth aspect of the present disclosure, in any one of the first to fourth aspects, the electric power supply portion may be provided at a face at the seat rear side of the seat back. 
     In the fifth aspect of the present disclosure, the electric power supply portion is provided at the face at the seat rear side of the seat back. Therefore, when the headrest is being detached from the seat back, the power supply line connected to the electric power supply portion may be detached easily, from the seat rear side of the seat back. Moreover, when the headrest is being attached to the seat back, the power supply line may be connected to the electric power supply portion easily, from the seat rear side of the seat back. 
     In a sixth aspect of the present disclosure, in any one of the first to fourth aspects, the electric power supply portion may be provided at an outer side, in a seat width direction, of an upper end portion of the seat back relative to a region of attachment of the headrest main body portion. 
     In the sixth aspect of the present disclosure, relative to the region of attachment of the headrest main body portion at the upper end portion of the seat back, the electric power supply portion is provided at the seat width direction outer side. Consequently, the power supply line is connected to the electric power supply portion in a state in which the power supply line is pulled out from the headrest main body portion in the seat width direction. Therefore, even if an extra length of the power supply line is long due to a height level of the headrest main body portion being lowered, the power supply line flexes in the seat width direction. As a result, incidences of the power supply line impeding a rear seat occupant may be suppressed. 
     A seventh aspect of the present disclosure may further comprising a winding mechanism that retractably winds the power supply line. 
     In the seventh aspect of the present disclosure, the winding mechanism may be operated and an extra length portion of the power supply line may be wound thereon. Conversely, the power supply line may be unwound from the winding mechanism. Thus, the power supply line may be connected to the electric power supply portion even when a distance from the headrest main body portion to the electric power supply portion is far. 
     In an eighth aspect of the present disclosure, in any one of the first to seventh aspects, the electronic apparatus may include at least one of a speaker or a microphone. 
     In the eighth aspect of the present disclosure, when a speaker is incorporated at the headrest main body portion, sound may be outputted to a vehicle occupant without the provision of a separate speaker. Further, when a microphone is incorporated at the headrest main body portion, voice messages uttered by a vehicle occupant may be collected without the provision of a separate microphone. 
     A vehicle headrest of a ninth aspect of the present disclosure includes: a headrest main body portion removably attached to a seat back of a vehicle seat; an electronic apparatus incorporated in the headrest main body portion, the electronic apparatus being operable due to electric power being supplied thereto; and a power supply line that extends from the headrest main body portion and is connectable to an electric power supply portion provided at an outer face of the seat back. 
     In the ninth aspect of the present disclosure includes the headrest main body portion that is to be removably attached to a seat back. The electronic apparatus is incorporated in the headrest main body portion, and the power supply line extends from the headrest main body portion. The power supply line may be connected to the electric power supply portion provided at the outer face of the seat back. Hence, electric power may be supplied from the electric power supply portion to the headrest main body portion via the power supply line. 
     The power supply line may be easily detached from the electric power supply portion provided at the outer face of the seat back. 
     In the first aspect of the present disclosure, a headrest that may be easily detached may be provided in a configuration in which an electronic apparatus is incorporated in a headrest main body portion. 
     In the second aspect of the present disclosure, a range of uses of the headrest may be broadened. 
     In the third aspect of the present disclosure, the power supply line may be connected and detached easily. 
     In the fourth aspect of the present disclosure, charging of another apparatus may be conducted easily. 
     In the fifth aspect of the present disclosure, mounting and removal of the headrest may be carried out efficiently. 
     In the sixth aspect of the present disclosure, comfort of a vehicle occupant sitting on a rear seat may be excellently maintained. 
     In the seventh aspect of the present disclosure, design characteristics of the headrest may be improved, in addition to which the power supply line may be connected to the electric power supply portion even when the headrest main body portion and the electric power supply portion are apart. 
     In the eighth aspect of the present disclosure, a number of electronic apparatuses provided in the vehicle may be reduced. 
     In the ninth aspect of the present disclosure, a headrest that may be easily detached may be provided in a configuration in which an electronic apparatus is incorporated in a headrest main body portion. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Exemplary embodiments of the present disclosure will be described in detail based on the following figures, wherein: 
         FIG. 1  is a perspective view, seen diagonally from a seat front-left side, illustrating an upper portion of a vehicle seat equipped with a vehicle headrest according to a first exemplary embodiment; 
         FIG. 2  is a side view, seen from the seat left side, of principal portions of the vehicle seat according to the first exemplary embodiment; 
         FIG. 3  is a schematic view illustrating a winding mechanism provided at the vehicle headrest according to the first exemplary embodiment; 
         FIG. 4  is a side view, corresponding to  FIG. 2 , illustrating principal portions of a vehicle seat equipped with a vehicle headrest according to a second exemplary embodiment; 
         FIG. 5  is a rear view, seen from the seat rear side, illustrating an upper portion of the vehicle seat according to the second exemplary embodiment; and 
         FIG. 6  is a rear view, seen from the seat rear side, illustrating a variant example of the vehicle seat. 
     
    
    
     DETAILED DESCRIPTION 
     First Exemplary Embodiment 
     A vehicle seat  10  at which a vehicle headrest  12  according to a first exemplary embodiment is employed is described with reference to the drawings. The arrow FR, arrow UP and arrow RH that are marked as appropriate in the drawings indicate, respectively, a seat front side, seat upper side and seat right side of the vehicle seat  10 . Herebelow, where descriptions are given using the directions front, rear, upper, lower, left and right, unless particularly specified, these represent the front and rear in the seat front-and-rear direction, upper and lower in the seat vertical direction, and left and right in the seat width direction. 
     The vehicle seat  10  according to the present exemplary embodiment is provided with a seat cushion, which is not illustrated in the drawings. The seat cushion is structured to be capable of supporting the buttock area and thigh area of a vehicle occupant sitting on the vehicle seat  10  from the seat lower side. 
     A lower end portion of a seat back  14  is rotatably connected to an end portion at the seat rear side of the seat cushion. The seat back  14  extends in the seat vertical direction. The lower end portion of the seat back  14  is connected to the seat cushion that is not illustrated in the drawings. 
     Side support portions  14 A are provided at two seat width direction end portions of the seat back  14 . The side support portions  14 A project to the seat front side from the two seat width direction end portions of the seat back  14 . The side support portions  14 A are formed in shapes that enfold side portions of the vehicle occupant sitting on the vehicle seat  10  in the seat width direction. 
     As an example in the present exemplary embodiment, the seat back  14  may be tilted by the seat back  14  being turned relative to the seat cushion that is not illustrated in the drawings. The vehicle seat is structured such that, by the seat back  14  being tilted, the seat cushion that is not illustrated in the drawings and the seat back  14  are made substantially coplanar in a “full-flat” state. 
     As illustrated in  FIG. 2 , an electric power supply portion  36  is provided at an outer face of the seat back  14 . As an example, the electric power supply portion  36  according to the present exemplary embodiment is provided at a face at the seat rear side of the seat back  14 , and is equipped with a connection port  36 A that opens toward the seat upper side, which is to say the side of the electric power supply portion  36  at which a headrest main body portion  16  is disposed. A power supply line  38 , which is described below, is connectable to the connection port  36 A. The electric power supply portion  36  is electronically connected to a power source, which is not illustrated in the drawings, installed in the vehicle. 
     As illustrated in  FIG. 1 , the vehicle headrest  12  is provided at an upper end portion of the seat back  14 . The vehicle headrest  12  according to the present exemplary embodiment includes the headrest main body portion  16 , speakers  18  that serve as an electronic apparatus, microphones  20  that serve as the electronic apparatus, aroma release devices  22 , a battery  32 , a winding mechanism  42 , and the power supply line  38 . 
     The headrest main body portion  16  is provided with a base portion  16 A that extends in the seat width direction and is capable of supporting the head area of the vehicle occupant from the seat rear side. The base portion  16 A is formed substantially in a board shape with a thickness direction in the seat front-and-rear direction. A cushion member  24  is attached to a face at the seat front side of the base portion  16 A. The cushion member  24  is formed with, for example, a pad provided with air permeability or the like. 
     The speakers  18  are provided inside the base portion  16 A. The speakers  18  are disposed at each of two seat width direction end portions of the base portion  16 A. Each speaker  18  is electronically connected with a speaker amplifier, which is not illustrated in the drawings, incorporated in the headrest main body portion  16 . When the speakers  18  are supplied with electric power, the speakers  18  operate, converting inputted electronic signals to sound and outputting the sound. 
     Side portions  16 B project to the seat front side from the two seat width direction end portions of the base portion  16 A. The side portions  16 B are formed so as to enfold the head area of the vehicle occupant from both sides in the seat width direction. As an example in the present exemplary embodiment, the base portion  16 A and the side portions  16 B are connected via hinges, which are not illustrated in the drawings, such that angles of the side portions  16 B relative to the base portion  16 A may be manually adjusted. Thus, when the vehicle occupant wishes to conceal their face, the side portions  16 B may be moved toward the seat width direction inner sides thereof. On the other hand, when the vehicle occupant wishes to communicate with a nearby vehicle occupant, the side portions  16 B may be moved toward the seat width direction outer sides thereof. 
     The microphones  20  are provided in each of the left and right pair of side portions  16 B. Each microphone  20  is disposed at a lower end portion of the side portion  16 B. The microphone  20  is electronically connected with a microphone amplifier, which is not illustrated in the drawings, incorporated in the headrest main body portion  16 . When the microphones  20  are supplied with electric power, the microphones  20  operate, collecting voice messages uttered by the vehicle occupant sitting on the vehicle seat  10  and converting the voice messages to electronic signals to acquire the voice messages. 
     The aroma release devices  22  are provided at the side portions  16 B, at the seat rear side relative to the microphones  20 . Each aroma release device  22  is provided with a fan  22 A that blows air to the seat width direction inner side thereof. An aromatic substance accommodation portion, which is not illustrated in the drawings, is provided at the aroma release device  22 . In a state in which an aromatic substance is accommodated in the aromatic substance accommodation portion, electric power is supplied to the fan  22 A and the fan  22 A is operated. Thus, an aroma is released to the side thereof at which the vehicle occupant is disposed. 
     As illustrated in  FIG. 2 , a battery accommodation case  30  is provided at a face at the seat rear side of the base portion  16 A of the headrest main body portion  16 . The battery accommodation case  30  is fixed to the base portion  16 A. The battery  32  and the winding mechanism  42  (see  FIG. 3 ) are accommodated inside the battery accommodation case  30 . A Bluetooth (registered trademark) receiver is accommodated in the battery accommodation case  30 , such that signals may be received from an external communications terminal by wireless. 
     The battery  32  is configured to be capable of charging up when electric power is supplied thereto. The speakers  18 , microphones  20  and fans  22 A are electronically connected to the battery  32 . The power supply line  38  extends outside the headrest main body portion  16  from the battery  32 . As an example in the present exemplary embodiment, the power supply line  38  extending from the battery  32  extends to the outside of the headrest main body portion  16  via the winding mechanism  42  (see  FIG. 3 ). 
     The power supply line  38  extends toward the seat lower side from a rear face of the battery accommodation case  30 . A connector  40  is provided at the distal end of the power supply line  38 . The connector  40  may be inserted into the connection port  36 A of the electric power supply portion  36 . Thus, the power supply line  38  is connected to the electric power supply portion  36  via the connector  40 . Hence, when electric power is supplied from the electric power supply portion  36  to the battery  32  via the power supply line  38 , the battery  32  is charged up. As an example, the battery  32  according to the present exemplary embodiment is equipped with a pass-through function. Therefore, charging of the battery  32  and operation of the electronic apparatus may be conducted simultaneously. 
     The winding mechanism  42  is accommodated in the battery accommodation case  30  together with the battery  32 . As illustrated in  FIG. 3 , the winding mechanism  42  is structured so as to retractably wind up a length of the power supply line  38 . The winding mechanism  42  is equipped with a spindle  48  that is fixed to a frame  44 . A spool  46  in a substantially cylindrical shape is rotatably attached to the spindle  48 . The power supply line  38  is wound onto an outer periphery face of the spool  46 . 
     When the side of the power supply line  38  at which the connector  40  is provided is pulled, the spool  46  of the winding mechanism  42  rotates and the power supply line  38  is unwound. A button, which is not illustrated in the drawings, is provided at the winding mechanism  42 . When this button is pressed in a state in which the power supply line  38  has been unwound, the spool  46  rotates in a winding direction and takes up the power supply line  38 . 
     As illustrated in  FIG. 2 , headrest stays  34  extend to the seat lower side from the headrest main body portion  16 . The headrest stays  34  are formed in substantially cylindrical shapes and are provided as a left and right pair. Insertion holes into which the headrest stays  34  may be inserted are formed in the upper end portion of the seat back  14 . The headrest main body portion  16  is mounted at the seat back  14  by the headrest stays  34  being inserted into these insertion holes. Thus, the vehicle headrest  12  according to the present exemplary embodiment is removably attached to the seat back  14 . The headrest stays  34  are structured such that the headrest stays  34  may be locked at arbitrary positions. Thus, a height level of the vehicle headrest  12  may be adjusted to match a height level of the head area of the vehicle occupant. 
     Operation 
     Now, operation of the present exemplary embodiment is described. 
     In the vehicle seat  10  at which the vehicle headrest  12  according to the present exemplary embodiment is employed, the power supply line extends from the headrest main body portion  16 , and the power supply line  38  is connectable to the electric power supply portion  36  provided at the outer face of the seat back  14 . Therefore, electric power may be supplied from the electric power supply portion  36  to the headrest main body portion  16  via the power supply line  38 . 
     Because the power supply line  38  is connected to the electric power supply portion  36  provided at the outer face of the seat back  14 , the power supply line  38  may be detached from the electric power supply portion  36  easily. Thus, the vehicle headrest  12  that may be easily detached may be provided in the configuration in which the electronic apparatus is incorporated in the headrest main body portion  16 . 
     In the present exemplary embodiment, the electric power supply portion  36  is provided at the face at the seat rear side of the seat back  14 . Therefore, when the vehicle headrest  12  is being detached from the seat back  14 , the power supply line  38  connected to the electric power supply portion  36  may be detached easily, from the seat rear side of the seat back  14 . Moreover, when the vehicle headrest  12  is being attached to the seat back  14 , the power supply line  38  may be connected to the electric power supply portion  36  easily, from the seat rear side of the seat back  14 . Thus, mounting and removal of the vehicle headrest  12  may be carried out efficiently. 
     In particular, in a vehicle that is equipped with the vehicle seat  10  whose seat back  14  may be tilted and put into the full-flat state as in the present exemplary embodiment, there may be occasions on which an operation to detach the vehicle headrest  12  is necessary. On these occasions, the vehicle headrest  12  may be detached from the seat back  14  easily. 
     In the present exemplary embodiment, the chargeable battery  32  is provided. Therefore, the battery  32  may be charged up, and the electronic apparatus such as the speakers  18  and the like incorporated in the headrest main body portion  16  may be used even in the state in which the vehicle headrest  12  is detached from the seat back  14 . As a result, a range of uses of the vehicle headrest  12  may be broadened. For example, the vehicle headrest  12  may be detached from the seat back  14  and taken out of the vehicle and, in this state, play music from the speakers  18 . 
     In the present exemplary embodiment, because the connection port  36 A of the electric power supply portion  36  opens toward the side thereof at which the headrest main body portion  16  is disposed, the power supply line  38  extending from the headrest main body portion  16  may be connected to the connection port  36 A easily. As a result, the power supply line  38  may be connected and detached easily. Furthermore, because the power supply line  38  is pulled out from the headrest main body portion  16  and connected to the connection port  36 A in a substantially linear state, a deterioration in appearance may be suppressed, and incidences of the body of a vehicle occupant catching on the power supply line  38  may be suppressed. 
     In the present exemplary embodiment, because the winding mechanism  42  is provided, the winding mechanism  42  may be operated and an extra length portion of the power supply line  38  may be taken up. Conversely, the power supply line  38  may be unwound from the winding mechanism  42 . Thus, the power supply line  38  may be connected to the electric power supply portion  36  even when a distance from the headrest main body portion  16  to the electric power supply portion  36  is far. For example, the distance from the headrest main body portion  16  to the electric power supply portion  36  is further when the height level of the headrest main body portion  16  is higher. In this situation, the power supply line  38  may be connected to the electric power supply portion  36  by only a required length of the power supply line  38  being pulled out from the winding mechanism  42 . Therefore, design characteristics of the vehicle headrest  12  may be improved, in addition to which the power supply line  38  may be connected to the electric power supply portion  36  even when the headrest main body portion  16  and the electric power supply portion  36  are apart. 
     In the present exemplary embodiment, when the speakers  18  are incorporated in the headrest main body portion  16 , sound may be outputted to a vehicle occupant without the provision of a separate speaker. Further, when the microphones  20  are incorporated in the headrest main body portion  16 , voice messages uttered by the vehicle occupant may be collected without the provision of a separate microphone. Therefore, a number of electronic apparatuses provided in the vehicle may be reduced. 
     Second Exemplary Embodiment 
     Now, a vehicle seat  50  at which a vehicle headrest  52  according to a second exemplary embodiment is employed is described with reference to  FIG. 4  and  FIG. 5 . Structures that are the same as in the first exemplary embodiment are assigned the same reference symbols and, as appropriate, are not described. 
     As illustrated in  FIG. 4  and  FIG. 5 , the vehicle seat  50  at which the vehicle headrest  52  according to the present exemplary embodiment is employed differs from the first exemplary embodiment in the position of the electric power supply portion  36 . That is, the electric power supply portion  36  according to the present exemplary embodiment is provided at a seat width direction outer side of the upper end portion of the seat back  14 . 
     More specifically, the electric power supply portion  36  is provided at the seat left side of the seat back  14  relative to a region of attachment of the headrest main body portion  16 . Apart from an upper end portion of the electric power supply portion  36 , the electric power supply portion  36  is embedded in the seat back  14 . 
     The electric power supply portion  36  is provided with the connection port  36 A, which opens toward the seat upper side. The power supply line  38  is connectable to the connection port  36 A. The electric power supply portion  36  is electronically connected to the power source, not illustrated in the drawings, that is installed in the vehicle. 
     The battery  32  is accommodated in the battery accommodation case  30  of the vehicle headrest  52 , and the power supply line  38  extends outside the headrest main body portion  16  from the battery  32 . 
     The power supply line  38  according to the present exemplary embodiment extends toward the lower-left side from a side face at the left side of the battery accommodation case  30 . The connector  40  provided at the distal end of the power supply line  38  may be connected to the connection port  36 A of the electric power supply portion  36 . 
     Operation 
     Now, operation of the present exemplary embodiment is described. 
     In the vehicle seat  50  according to the present exemplary embodiment, the electric power supply portion  36  is provided at the seat left side of the upper end portion of the seat back  14  relative to the region of attachment of the headrest main body portion  16 . Consequently, the power supply line  38  is connected to the electric power supply portion  36  in a state in which the power supply line  38  is pulled out from the headrest main body portion  16  in the seat width direction. Therefore, even if an extra length of the power supply line is long due to the height level of the headrest main body portion  16  being lowered, the power supply line  38  flexes in the seat width direction in the manner of the power supply line  38  depicted by two-dot chain lines. As a result, incidences of the power supply line  38  impeding a rear seat occupant may be suppressed. Consequently, comfort of a vehicle occupant sitting on a rear seat may be excellently maintained. Other operations are similar to the first exemplary embodiment. 
     In the first exemplary embodiment and second exemplary embodiment described above, structures are described in which one of the connection port  36 A is formed at the electric power supply portion  36 . However, this is not limiting; a structure according to a variant example illustrated in  FIG. 6  may be employed. 
     Variant Example 
     In the present variant example as illustrated in  FIG. 6 , an electric power supply portion  60  is provided instead of the electric power supply portion  36 . Similarly to the first exemplary embodiment, the electric power supply portion  60  is provided at the face at the seat rear side of the seat back  14 . The electric power supply portion  60  is provided with a connection port  60 A that opens toward the seat upper side. 
     The electric power supply portion  60  is provided with, in addition to the connection port  60 A, an other apparatus connection port  60 B at which another electronic apparatus is connectable. The other apparatus connection port  60 B opens toward the seat rear side and is formed in a shape that corresponds with a charging cable for a portable terminal such as a smartphone or the like. 
     Because the electric power supply portion  60  is equipped with the other apparatus connection port  60 B in the present variant example as described above, an electronic apparatus such as a smartphone carried by a vehicle occupant or the like may be charged up. That is, charging of another apparatus may be conducted easily. 
     In particular, when the other apparatus connection port  60 B opens toward the seat rear side as in the present variant example, a vehicle occupant sitting on a seat behind the vehicle seat  10  may easily use the other apparatus connection port  60 B. Note that a table or holder for placing an electronic apparatus such as a smartphone or the like on may be provided below the electric power supply portion  60 . Accordingly, there is no need for the vehicle occupant to continue holding the electronic apparatus in their hand during charging. 
     Above, vehicle seats  10  and  50  at which vehicle headrests  12  and  52  according to the first exemplary embodiment, the second exemplary embodiment and the variant example are employed are described, but it will be clear that numerous embodiments are possible within a scope not departing from the gist of the present disclosure. For example, in the exemplary embodiments described above, the battery  32  is provided inside the headrest main body portion  16  but this is not limiting; a headrest main body portion in which the battery  32  is not incorporated may be employed. In this case, the electronic apparatus may be used only in the state in which the power supply line  38  is connected to the electric power supply portion  36 . This vehicle headrest may be lower in weight than a structure incorporating the battery  32 . 
     In the exemplary embodiments described above, structures are described in which, as illustrated in  FIG. 1 , the speakers  18 , the microphones  20  and the fans  22 A of the aroma release devices  22  that serve as the electronic apparatus are incorporated in the headrest main body portion  16 , but this is not limiting. For example, a structure is possible in which only the speakers  18  are incorporated in the headrest main body portion  16 . Conversely, the headrest main body portion  16  that is employed may incorporate other electronic apparatus in addition to the speakers  18 , the microphones  20  and the aroma release devices  22 ; a structure is possible in which motors for driving the side portions  16 B of the headrest main body portion  16  are incorporated. 
     In the exemplary embodiments described above, structures are described in which one of the connection port  36 A is provided at the electric power supply portion  36 , and the connection port  60 A and other apparatus connection port  60 B are provided in the variant example, but this is not limiting. For example, structures may be employed in which three or more connection ports are formed at the electric power supply portion  36 . Further, structures may be employed in which the electric power supply portion  36  is provided at plural locations of the seat back  14 . 
     Alternative structures are possible, provided that the electric power supply portion  36  is a structure to which the power supply line  38  may be connected and that may supply electric power. That is, a structure is possible in which a protruding connection portion is provided instead of the connection port  36 A. In this case, a recess portion may be formed in the connector  40  at the distal end of the power supply line  38  and the power supply line  38  may be connected to the electric power supply portion  36 . 
     In the exemplary embodiments described above, the winding mechanism  42  illustrated in  FIG. 3  is employed, but this is not limiting. That is, an alternative winding mechanism may be employed provided that the alternative winding mechanism is capable of taking up the power supply line  38 . For example, a structure is possible in which the power supply line  38  is wound and unwound by a motor being driven and the spool  46  being rotated. In this structure, control may be performed so as to apply a constant tension to the power supply line  38 . Thus, the length of the power supply line  38  may be automatically adjusted even when the headrest main body portion  16  is raised or lowered. 
     In the exemplary embodiments described above, the height level of the headrest main body portion  16  is adjustable, but this is not limiting. That is, a structure is possible in which the height level of the headrest main body portion  16  relative to the seat back  14  cannot be adjusted. In this structure, because the distance from the headrest main body portion  16  to the electric power supply portion  36  does not vary, the winding mechanism  42  may be omitted.