Crime prevention device for vehicle

1. A vehicle security system comprising:

intrusion determining means for transmitting a transmission wave in a vehicle and determining, based on an output of a reflected wave of the transmission wave, whether or not a body intrudes into the vehicle; and

adjacent body detecting means for detecting a body adjacent to the vehicle,

wherein said intrusion determining means determines that the body has intruded into the vehicle when the output of the reflected wave is within a predetermined range and the intrusion determining means determines that the body is not adjacent to the vehicle based on information provided by the adjacent body detecting means, and

wherein said intrusion determining means determines that the body has not intruded into the vehicle, when the output of the reflected wave is within the predetermined range and the adjacent body detecting means detects the body adjacent to the vehicle.

2. The vehicle security system as claimed in claim 1 ,

wherein the vehicle includes a front side and a rear side,

wherein the transmission wave and the reflected wave are transmitted and received on the front side of the vehicle, and

wherein the adjacent body detecting means detects the body outside of the vehicle adjacent to the front side.

3. The vehicle security system as claimed in claim 2 ,

wherein the vehicle includes a front seat disposed inside the vehicle at the front side, and

wherein the adjacent body detecting means detects the body outside of the vehicle adjacent to the front seat.

4. The vehicle security system as claimed in claim 1 ,

wherein the vehicle includes a front side and a rear side,

wherein the transmission wave and the reflected wave are transmitted and received on the rear side of the vehicle, and

wherein the adjacent body detecting means detects the body outside of the vehicle adjacent to the rear side.

5. The vehicle security system as claimed in claim 4 ,

wherein the vehicle includes a rear seat disposed inside the vehicle at the rear side, and

wherein the adjacent body detecting means detects the body outside of the vehicle adjacent to the rear seat.

6. The vehicle security system as claimed in claim 1 , further comprising:

reporting means for reporting an intrusion when said intrusion determining means determines that the body intrudes into the vehicle.

7. The vehicle security system as claimed in claim 6 , the intrusion is reported via an alarm light or an alarm sound unit.

8. The vehicle security system as claimed in claim 1 ,

wherein the intrusion determining means includes an intrusion sensor such that the transmission wave is an electromagnetic wave transmitted by the intrusion sensor, and

wherein the adjacent body detecting means includes a distance sensor that detects a distance between the body and the vehicle.

9. The vehicle security system as claimed in claim 1 , wherein the output of the reflected wave is a voltage that is output by an intrusion sensor that correlates to an amplitude of the reflected wave.

10. A vehicle security system comprising:

an intrusion determining unit that transmits a transmission wave in a vehicle and that determines based on an output of a reflected wave of the transmission wave, whether or not a body intrudes into the vehicle; and

an adjacent body detecting unit that detects a body adjacent to the vehicle,

wherein said intrusion determining unit determines that the body has intruded into the vehicle when the output of the reflected wave is within a predetermined range and the intrusion determining unit determines that the body is not adjacent to the vehicle based on information provided by the adjacent body detecting unit, and

wherein said intrusion determining unit determines that the body has not intruded into the vehicle, when the output of the reflected wave is within the predetermined range and the adjacent body detecting unit detects the body adjacent to the vehicle.

11. The vehicle security system as claimed in claim 10 ,

wherein the vehicle includes a front side and a rear side,

wherein the transmission wave and the reflected wave are transmitted and received on the front side of the vehicle, and

wherein the adjacent body detecting unit detects the body outside of the vehicle adjacent to the front side.

12. The vehicle security system as claimed in claim 11 ,

wherein the vehicle includes a front seat disposed inside the vehicle at the front side, and

wherein the adjacent body detecting unit detects the body outside of the vehicle adjacent to the front seat.

13. The vehicle security system as claimed in claim 10 ,

wherein the vehicle includes a front side and a rear side,

wherein the transmission wave and the reflected wave are transmitted and received on the rear side of the vehicle, and

wherein the adjacent body detecting unit detects the body outside of the vehicle adjacent to the rear side.

14. The vehicle security system as claimed in claim 13 ,

wherein the vehicle includes a rear seat disposed inside the vehicle at the rear side, and

wherein the adjacent body detecting unit detects the body outside of the vehicle adjacent to the rear seat.

15. The vehicle security system as claimed in claim 10 , further comprising:

a reporting part that reports an intrusion when said intrusion determining unit determines that the body intrudes into the vehicle.

16. The vehicle security system as claimed in claim 15 , the intrusion is reported via an alarm light or an alarm sound unit.

17. The vehicle security system as claimed in claim 10 ,

wherein the intrusion determining unit includes an intrusion sensor such that the transmission wave is an electromagnetic wave transmitted by the intrusion sensor, and

wherein the adjacent body detecting unit includes a distance sensor that detects a distance between the body and the vehicle.

18. The vehicle security system as claimed in claim 10 , wherein the output of the reflected wave is a voltage that is output by an intrusion sensor that correlates to an amplitude of the reflected wave.