| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of lighting unit capable of connecting an electronic component for surface mounting with one kind of bus bar, without enlarging the unit size while capable of changing luminescent color, and requiring no large light guiding part.SOLUTION: A lighting unit is provided with a first and a second bus bars of same shape in which two pairs of separated right and left contact spring pieces are formed for the upper and lower steps and which are inserted in a row in a housing 17, a first semiconductor light-emitting element 21 which is inserted in the housing 17 and is connected to the adjoining pair of right and left contact string pieces of the upper step of the first and the second bus bars, a second semiconductor light-emitting element 23 which is inserted in the housing 17 at a position offset to the first semiconductor light-emitting element 21 and is connected to the adjoining pair of right and left contact spring pieces of the lower step of the first and the second bus bars, and is lighted up to a color different from the first semiconductor light-emitting element 21, and a cover 13 in which the housing 17 is inserted inside and which has a light guide part 25 to which emitted light from the first semiconductor light-emitting element 21 and the second semiconductor light-emitting element 23 is transmitted. |
