Vehicle-mounted air purification device

The utility model discloses a vehicle-mounted air purification device. The air purification device is arranged at the air outlet of an automobile air conditioner. The vehicle-mounted air purification device comprises a shell, an air inlet, an air outlet, a filter, a bamboo coal device, a purification module, a sensor, a controller, an attention device and a triggering device, wherein the filter, the bamboo coal device and the purification module are arranged inside the shell from the air inlet to the air outlet in sequence; the sensor is in signal connection with the controller; the controller is connected with an automobile control system; the purification module is electrically connected with an automobile power supply; the attention device and the triggering device are respectively connected with the controller. The vehicle-mounted air purification device has a multi-grade purification function, and can generate negative oxygen ions, so that the interior environment of an automobile is fresh and moist. Moreover, the air purification device can automatically inspect and alarm and is energy-saving, so that the PM (Particulate Matter) value of air inside an automobile is always at an optimal state, and a fresh and environment-friendly environment is provided for the interior of the automobile.