| 摘要 |
A self-powered, heat-activated LED exhaust tip assembly ( 10 ) that is comprised of three major elements: a cylindrical enclosure ( 12 ), a heat conducting sub-assembly ( 80 ) and an electronics circuit ( 130 ). The sub-assembly ( 80 ) consists of an external heat conducting plate ( 82 ), and an enclosure-internal heat conductive horizontal structure ( 110 ) that is attached to the plate ( 82 ) through a heat conductive vertical rod ( 98 ). When heated vehicle exhaust gases pass through the enclosure ( 12 ), the gases heat the structure ( 110 ) and the heat is then transferred to the plate ( 92 ) via the rod ( 98 ). The heat from the plate ( 82 ) is transferred to a peltier device ( 132 ) that interfaces with the plate ( 82 ). The heated peltier device ( 132 ) produces a first d-c voltage ( 11 ) that is applied to a DC to DC converter ( 134 ), where a second d-c voltage ( 13 ) is produced. The output of the converter ( 134 ) is applied to an application specific integrated circuit (ASIC) ( 136 ) that produces a set of LED control signals that illuminate a set of LEDs.
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