A child car seat that includes a headrest portion that is adjustable with respect to the car seat base in a vertical and horizontal direction, wherein the adjustment of the headrest in a vertical direction is accomplished via a screw-type mechanism.

The head and neck support system includes a pair of rods, a frame having an upper portion and a lower portion, and a pad having an attachment device, a first surface and a second surface. The pad wraps around the frame so as to form a loop to hold the head of a user against the second surface. The pad can have an eye mask or face mask section for a resting or sleeping position for the user. The lower portion of the frame is aligned with the back of the user so that the weight of the user stabilizes the frame. The rods connect the lower portion and the upper portion of the frame so that stabilization from the back of the user supports the pad and head of the user.

A back frame structure of a vehicle seat, the back frame structure including: a pair of side frames extending in an upper and lower direction; and an upper frame that connects upper end sides of the side frames in a bridging manner, the upper frame including: a main body part having a substantially inverted U-shaped cross-section opened downward; and a cover member attached to the main body part so as to close at least a part of an opening end side in the cross-section of the main body part.

A vehicle seat includes: a seat cushion; a seat back that is connected to a rear part of the seat cushion; a head rest; and a connected member that is provided in the head rest. The head rest is arranged on top of the seat back in a standing state through the connecting member. The connecting member has a frame part, which constitutes a frame of the head rest, and a bracket part, which is fixed to the seat back side, in an integrated manner.

A system for securing a human head in an upright position during sitting is presented. The device includes a band, a pad section, and an attachment member. The band is configured to wrap around a portion of the head and a sitting device. The pad section is coupled to the band and configured to engage a portion of the human head. The attachment member secures the band around the head in order to maintain the upright orientation of the head. Additive materials and safety members may be used to increase comfort, function, and safety of the device.

A headrest in one aspect of the present disclosure comprises a first frame member, a second frame member, a displacement mechanism to displace the second frame member with respect to the first frame member, a first guide shaft, a first bearing portion through which the first guide shaft is inserted, a second guide shaft, a second bearing portion through which the second guide shaft is inserted, a first fixing portion that comprises a first insertion hole into which one end of the first guide shaft is inserted, and a second fixing portion that comprises a second insertion hole into which one end of the second guide shaft is inserted.

A headrest in one aspect of the present disclosure comprises a first frame member, a second frame member, a displacement mechanism configured to displace the second frame member with respect to the first frame member, a first guide shaft, and a second guide shaft arranged at a position shifted in a substantially vertical direction and in a substantially horizontal direction with respect to the first guide shaft.

A headrest structure is provided and includes a body and two supporting rods. The body includes a covering cushion and an automated external defibrillator (AED). The AED is enclosed by the covering cushion. Each of the supporting rods includes a linking end and a combining end opposite to the linking end, and each of the supporting rods is connected to the body with the linking end so as to support the body. Based on this, the AED is assembled in the body to improve the applicability of the AED, so that patients experiencing cardiac arrest can be treated properly and instantly.

A device for the variable fixing of a headrest to a vehicle seat, having a receptacle (1), which forms a receiving space (5) for receiving a headrest support (6), and having a locking rocker (7) which, by means of an actuation movement of an actuation element (11), can be rotated from a locking position, in which a locking section (18) of the locking rocker (7) projects into the receiving space, into a release position, in which the locking section (18) does not project into the receiving space or projects into the receiving space (5) to a lesser extent than in the locking position, is characterized in that the direction of the actuation movement is not oriented perpendicular to the axis of rotation (25) about which the locking rocker (7) is rotatable.

To enable an output sound of a speaker unit to be output as a surface sound source in a limited space. A three-dimensional knitted fabric is provided at a position substantially facing speaker units while being given tension in a surface direction. Since the tension is applied, a pair of ground knitted fabrics constituting the three-dimensional knitted fabric and a connecting yarn extending back and forth between the ground knitted fabrics vibrate due to their elastic action. In particular, string vibration is generated in the connecting yarn. Due to this vibration, output sounds of the speaker units are propagated in the surface direction of the three-dimensional knitted fabric, and as a result, the three-dimensional knitted fabric propagates and radiates acoustic waves of a surface sound source.