| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED lighting fixture for a vehicle suppressing the temperature rise of an LED element to suppress a decrease in the amount of light emission and to restrain a service life from being shortened by the degradation of the LED element by providing a heat radiating means of high reliability and excellent heat radiation efficiency with a simple measure to cope with a fault at the worst. <P>SOLUTION: A lighting fixture portion 1 formed by storing a light source unit 5 including an LED light source 6 and a heat sink 11 is airtightly connected to a circulating fan module portion 20 located at the lower front part of the lighting fixture portion 1 and formed by storing a circulating fan 22, and the other end of a ventilation duct 30 with one end airtightly connected to the circulating fan module portion 20 is airtightly connected to the lighting fixture portion 1. The heat sink 11 is forcibly air-cooled with air circulated by the circulating fan 22 in a closed passage formed by the lighting fixture portion 1, the circulating fan module portion 20 and the ventilation duct 30, thus suppressing the temperature rise of the LED light source 6. <P>COPYRIGHT: (C)2011,JPO&INPIT |
