| 摘要 |
PURPOSE: To materialize high resolution and miniaturization within a set temperature by forming a circuit pattern on the inner surface of an electric supply of a fluorescent lamp having an almost same size as an incandescent lamp, and by mounting an electric element to it. CONSTITUTION: A bent fluorescent lamp 14 contained in an almost spherical translucent enclosure 11 having an equal or similar shape to that of an incandescent lamp is attached to a heat insulating board 12 having a heat insulating space 15 in the middle. A power supply part 2a is formed into a cylinder shape after an electric element 18 is mounted on a pattern of an aluminum circuit board, junctions are connected, one end is covered by the heat insulating board 12 and the other end is covered by another lid plate 20 for the aluminum circuit board and a base 19, Accordingly, heat from an arc tube 1 is insulated by the space 15, heat generated from the element 18 is directly transmitted to a case 16 and is radiated by convection and radiation, so that a temperature rise is suppressed. |
