A detection device which is a torque sensor, comprising: a conductive member (31, 32, 40, 41, 42, or 43) provided to be conductive to a grounded member having a ground potential; a facing member (30 or 44) having at least one portion facing the conductive member; and two sensor portions (51, 53, or 55), each including a sensor element (512 or 532) which is a magnetism sensor element, a sensor main body (511 or 531) and a grounded terminal (517, 537, or 557), the sensor element being disposed in a sensor placement region which is located between the conductive member and the facing member and in which a distance between the conductive member and the facing member is shortest, the sensor main body sealing the sensor element, and the grounded terminal protruding from the sensor main body and connected to a ground, wherein the conductive member is a first magnetism collection ring arranged in a radial direction around a torsion bar arranged in an axial direction and being configured to convert applied toque to a torsional displacement, the conductive member having a first base portion (38 or 48) and a first magnetism collection portion (311, 321, 401, 411, 421, or 431) protruding radially and outwardly in the radial direction from the first base portion, wherein the facing member is a second magnetism collection ring arranged in a radial direction around the torsion bar, the facing member having a second base portion (38 or 48) and a second magnetism collection portion (301 or 441) protruding radially and outwardly in the radial direction from the second base portion and facing the first magnetism collection portion, wherein the sensor placement region is a region where the first magnetism collection portion and the second magnetism collection portion face each other, wherein the sensor element detects magnetic flux between the first magnetism collection portion and the second magnetism collection portion, and wherein the conductive member is provided to be conductive such that static electricity or noise can be transmitted to the grounded terminal or a grounded wiring portion (617, 657, 663, or 677) connected to the grounded terminal in a conductive region different from the sensor placement region, characterized in that the first magnetism collection portion (401 or 411) has an escape portion (405 or 415) protruding in a radial direction of the conductive member as defined by the magnetism collection ring and away from the first base portion, wherein the escape portion has a tip bent toward the grounded terminal and is provided to be conductive to the grounded terminal. a conductive member (31, 32, 40, 41, 42, or 43) provided to be conductive to a grounded member having a ground potential; a facing member (30 or 44) having at least one portion facing the conductive member; and two sensor portions (51, 53, or 55), each including a sensor element (512 or 532) which is a magnetism sensor element, a sensor main body (511 or 531) and a grounded terminal (517, 537, or 557), the sensor element being disposed in a sensor placement region which is located between the conductive member and the facing member and in which a distance between the conductive member and the facing member is shortest, the sensor main body sealing the sensor element, and the grounded terminal protruding from the sensor main body and connected to a ground, wherein the conductive member is a first magnetism collection ring arranged in a radial direction around a torsion bar arranged in an axial direction and being configured to convert applied toque to a torsional displacement, the conductive member having a first base portion (38 or 48) and a first magnetism collection portion (311, 321, 401, 411, 421, or 431) protruding radially and outwardly in the radial direction from the first base portion, wherein the facing member is a second magnetism collection ring arranged in a radial direction around the torsion bar, the facing member having a second base portion (38 or 48) and a second magnetism collection portion (301 or 441) protruding radially and outwardly in the radial direction from the second base portion and facing the first magnetism collection portion, wherein the sensor placement region is a region where the first magnetism collection portion and the second magnetism collection portion face each other, wherein the sensor element detects magnetic flux between the first magnetism collection portion and the second magnetism collection portion, and wherein the conductive member is provided to be conductive such that static electricity or noise can be transmitted to the grounded terminal or a grounded wiring portion (617, 657, 663, or 677) connected to the grounded terminal in a conductive region different from the sensor placement region, characterized in that the first magnetism collection portion (401 or 411) has an escape portion (405 or 415) protruding in a radial direction of the conductive member as defined by the magnetism collection ring and away from the first base portion, wherein the escape portion has a tip bent toward the grounded terminal and is provided to be conductive to the grounded terminal.