Patent ID: 7161477

Claim:
A seat belt alarm apparatus, comprising: seat belt detection means for detecting whether or not a seat belt is fastened; alarm means for prompting the fastening of said seat belt; alarm drive means for driving said alarm means; and alarm control means for outputting a drive signal to said alarm drive means, wherein said alarm control means has at least two types of alarm patterns having a different alarm mode respectively; said alarm control means outputs a drive signal having a weak alarm pattern after an ignition switch is turned on, when said seat belt detection means detects that said seat belt is unfastened and when a vehicle speed is equal to or less than a set vehicle speed; said alarm control means outputs said drive signal having a continuous strong alarm pattern when said seat belt detection means detects that said seat belt is unfastened and said vehicle speed is more than said set vehicle speed until said seat belt detection means detects that said seat belt is fastened; and said alarm control means continuously outputs said drive signal having said strong alarm pattern even if said vehicle speed becomes equal to or less than said set vehicle speed thereafter.