| 摘要 |
PROBLEM TO BE SOLVED: To suppress a rise in the temperature of a luminous body, and also restrain a luminous color from the luminous body from fluctuating.SOLUTION: A control unit 20 receives a signal indicating the strength of light to be emitted by a light-emitting unit 10, and controls a luminous body 12 according to this signal. Specifically, the control unit 20 selects the number of drive luminous bodies 12a which are the luminous body 12 to be driven to emit light on the basis of the received signal. Then the control unit 20 selects, as a first example, a drive luminous body so that, while the selected number is being satisfied, an average value of distance between adjacent drive luminous bodies 12a is largest. Furthermore, the control unit 20 selects, as a second example, a drive luminous body 12a so that, when the number of other drive luminous bodies 12a adjacent to the drive luminous body 12a concerned (an adjacent number) is examined with respect to all drive luminous bodies 12a, an average value or a maximum value of the adjacent number is smallest, while the selected number is being satisfied. |
