Vehicle accessory

A vehicle accessory comprising a light controlling sheet which is attached on a windshield of a vehicle, a rearview mirror which ensures rear view of the vehicle, and a mirror support member which is secured on the windshield and supports the rearview mirror,

• wherein the rearview mirror comprises:
• a mirror housing which is connected to the mirror support member;
• a mirror plate of which light reflectance changes according to a value of voltage;
• a front light receiving sensor which detects light entered from the front of the vehicle;
• and
• a rear light receiving sensor which detects light entered from the rear of the vehicle,
• the light controlling sheet is a flexible transparent sheet of which light transmittance changes according to a value of voltage, and
• the mirror housing encloses:
• a circuit board which applies a value of voltage according to a received light quantity of the rear light receiving sensor to the mirror plate, and applies a value of voltage according to a received light quantity of the front light receiving sensor to the light controlling sheet;
• and
• a power supply unit which supplies power to the circuit board.