| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED lamp, of which size reduction is realized by taking the size of a conventional incandescent lamp, krypton lamp, and halogen lamp into consideration, and in which a heat-radiating member for radiating heat from an LED light source part will not give adverse effects to the power supply circuit part, as much as possible. <P>SOLUTION: The LED lamp has a light source part 10, a power supply circuit part 20, a heat-radiating member 30, a power source housing case 40, and a base 50, or the like. The heat-radiating member is arranged so as to surround the outer circumference of the LED light source part and the power supply circuit part, and has a cylindrical part 31 with its lower end portion open, and supports the LED power source part so that the heat generated of the LED light source part is conducted. The power source housing case is arranged, with at least the upper end portion inserted inside from the lower end opening of the heat-radiating member and houses and supports the power supply circuit part at the lower side of the LED light source part. The base for inputting power from the outside is installed at the lower end side of the power source housing case. The outline of the portion in where the power source housing case is inserted in the heat-radiating member is different from the shape of the inner space of the heat-radiating member. <P>COPYRIGHT: (C)2009,JPO&INPIT |
