[Problem] To provide a car active ingredient-generating device: which has a configuration that can be made smaller so as to allow placement in an area of the car instrument panel that faces the interior of the car while also being capable of appropriately delivering air comprising the active ingredient, which has been generated by heating an active ingredient-generating member, into the interior of the car using the air stream of the car air conditioning device and for which replacement of the active ingredient-generating member is also simple. [Solution] The car active ingredient-generating device (5) is configured so that: the device is disposed in an area of the instrument panel (1) that faces the interior of the car a mat-shaped member (M) is detachably attached to an attachment part (28b) from an insertion port (7) on the interior side by heating the mat-shaped member (M), which has been attached on the attachment part (28b) and faces the air flow channel (28a), using the radiator plate (17) of a PTC heater device(15) facing the mat-shaped member (M) on the side opposite to the air flow channel (28a) to generate the active ingredient, the active ingredient is vaporized into the air flowing in the air flow channel (28a) and air comprising the active ingredient is delivered from the air flow channel (28a) into the interior of the car via an expanded portion (7a) of the insertion port (7).Le problème décrit par la présente invention est de fournir un dispositif générateur de principe actif pour voiture dont la configuration lui permet dêtre plus petit afin dêtre placé dans une zone du tableau de bord en regard de lintérieur de la voiture, et de pouvoir aussi diffuser convenablement, à lintérieur de la voiture à laide du flux dair du climatiseur, de lair comportant le principe actif généré grâce au chauffage dun élément générateur de principe actif. De plus, le remplacement de cet élément générateur de principe actif est simple. La solution de linvention porte sur
