Vehicle seat

1. A vehicle seat, comprising:

a panel;

a pad supported by the panel, a bottom surface of the pad contacting an upper surface of the panel;

a skin material covering a upper surface of the pad; and

a sensor provided between the upper surface of the pad and the skin material for acquiring information on a seat occupant,

wherein the pad is provided with a through hole passed from the upper surface of the pad to the bottom surface of the pad, and a recess formed in the bottom surface of the pad and connected to the through hole, the sensor being connected to a wire harness extending in the through hole and the recess,

wherein an air passage extending from the bottom surface to the upper surface is formed in the pad,

wherein the through hole is formed so as to avoid the air passage,

wherein the air passage includes a collecting portion opening on the bottom surface of the pad, and a branch part branched from the collecting portion and opening on the upper surface of the pad,

wherein a ventilation groove is formed in the panel at a position corresponding to the open end of the collecting portion, and

wherein the ventilation groove extends to communicate with the open end of the collecting portion and to communicate with the internal space of a cabin so that the ventilation groove and the bottom surface of the pad cooperate to form a part of the air passage which communicates with the internal space of the cabin.

2. The vehicle seat according to claim 1 , wherein the recess extends from the through hole to an edge of the bottom surface of the pad.

3. The vehicle seat according to claim 1 , wherein

the upper surface of the panel faces vertically, the pad is placed on the upper surface of the panel so as to be rotatable around a center located in a rear end portion thereof, and the recess extends rearward from the through hole.

4. The vehicle seat according to claim 1 , wherein the pad includes a plurality of members made of different materials, and the through hole is formed in one of the members.

5. The vehicle seat according to claim 1 , wherein a locking portion for fixing a child seat is formed on the upper surface of the pad, and the through hole is formed so as to avoid the locking portion.

6. The vehicle seat according to claim 1 , wherein a heater cloth having a heater wire is provided on the upper surface of the pad, and the through hole is positioned so as to avoid the heater cloth.

7. The vehicle seat according to claim 1 , wherein one end of the through hole is provided at a position avoiding a pressure receiving area defined as an area on the upper surface of the pad to which a load of a seat occupant is directly applied.

8. The vehicle seat according to claim 7 , wherein the upper surface of the panel faces vertically, the pad is positioned on the upper surface of the panel, and the through hole is provided behind the pressure receiving area.

9. The vehicle seat according to claim 1 , wherein the open end of the branch part is formed in the front of the sensor.

10. The vehicle seat according to claim 1 , wherein the pad has a rigid part that forms an outer periphery of a back part thereof, and a soft part that forms a front part thereof and a central part of the back part thereof,

wherein the soft part has a higher flexibility than the rigid part,

wherein the soft part is connected to the rigid part,

wherein the through hole is passed through both the soft part and the rigid part so that an open end on a back surface is formed in the rigid part, and

wherein the diameter of the through hole formed in the rigid part is larger than the diameter of the through hole formed in the soft part.