| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a longer operating life by a structure of efficiently radiating heat from an LED of a fishing lamp to the outside, maintaining the temperature of the LED to be the maximum rated temperature or less, and maintaining characteristics of the LED for a long time, and to prevent an accident from occurring such that the voltage lowers too far and an engine does not start when a battery for starting the engine is used as parallel use, and the power is used for a long time. <P>SOLUTION: A substrate 3 on which the LED 1 is mounted is made thin in 0.05 mm or less by forming a copper foil in a polyimide with a thin-film technology. The heat generated by the LED is quickly efficiently transmitted to a radiation fin through a metal plate on the back of the substrate to be radiated outside. A temperature sensor 7 is installed in the center of the substrate in which the temperature rises the most to detect the temperature. The temperature of the LED is controlled so as not to exceed the maximum rating. Deterioration in the characteristic of the LED is prevented, achieving the longer operating life of the LED. When using the battery for starting the engine as parallel use, the output voltage is monitored, and the LED fishing lamp is automatically turned off when the output voltage goes under the setting voltage, preventing the accident from occurring such that the engine does not start. <P>COPYRIGHT: (C)2013,JPO&INPIT |
