APPRATUS FOR ALRAM OF DOOR LOCKING STATUS USING VIBRO SPEAKER

PURPOSE: A vehicle door locking state alarm device is provided to improve the convenience of a user by emitting light through an LED display part after sensing door open of the user and to prevent a robbery of a vehicle. CONSTITUTION: A contact detector(112) is formed on a door handle of a vehicle and senses the contact of a user. A door state receiver(111) receives and amplifies a locking signal or an unlocking signal of a door locking device of the vehicle. A microcontroller determines whether the user is normal user or not according to locking state of a door when user contact is sensed. An LED display part(116) is comprised of a plurality of LED lamps which emits a red color or a blue color according to control of the microcontroller. A vibration amplifier and a vibration speaker extract a pre-stored melody by the control of the microcontroller. [Reference numerals] (111) Door state receiver; (112) Contact detector; (113) Microcontroller; (114) Vibration amplifier; (116) LED display part; (AA) Door locking switch