| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a figure indicating unit is reduced in quality and reliability due that various troubles such as damage to an LED chip, entrainment of air bubbles and the like occur when a lamp house is built in, where the lamp house is required to be built in a conventional method of manufacturing this kind of a figure indicating units. SOLUTION: A combination of LED chips 2 forming seven segments is arranged on a board 1, a transparent part 3 of transparent epoxy resin is formed on the board 1 through a primary transfer molding process so as to cover the segments, light shading grooves 3a each having an optional width are provided to the transparent part 3 so as to isolate the segments from each other, segment demarcating parts 4 of opaque epoxy resin are each provided in the light shading grooves 3a through a secondary transfer molding process, and then a seven segment LED figure indicating unit is capable of indicating the number of optional-numbered figures by optionally dividing the transparent part 3 in this manufacturing method. A lamp house assembly operation damaging an LED chip can be dispersed with, so that the problem can be solved. |
