Light bar
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United States of America Patent
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-
Dec 11, 2012
Grant Date -
Aug 18, 2011
app pub date -
Feb 15, 2010
filing date -
Feb 15, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A light bar system for a vehicle compartment includes a circuit board having a plurality of capacitive-type, user-activated switches, an electrical power source coupled to the circuit board, a light emitting diode (LED) coupled to the circuit board, and a light bar affixed to the circuit board. The user-activated switches are coupled to a vehicle accessory to control the level of operation of the vehicle accessory. The most recently actuated one of the user-actuated switches is detected by the circuit board and the circuit board provides a pulse width modulated (PWM) signal to the LED with a duty cycle of the PWM signal based on the most recently actuated switch. A higher duty cycle PWM signal corresponds to a higher setting of the accessory.
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