Lighting control device

Abstract

The purpose of the present disclosure is to achieve an increase in light sources for an on-board lamp and to achieve sophistication or diversification of lighting functions. A lighting control device (101) according to the present disclosure comprises: a lighting control unit (11) that determines the modulation states of a plurality of light sources; and a communication unit (12) that is interposed between the lighting control unit (11) and the plurality of light sources and that transmits, through serial communication, instructions regarding the modulation states of the plurality of light sources. The communication unit (12) transmits and receives information by dividing the plurality of light sources into a plurality of groups according to the priorities of the light sources and sequentially selecting, from among the plurality of groups, a communication destination for each communication cycle of the serial communication. The number of light sources constituting each group of the plurality of groups is, for light sources constituting each group and having a high priority, smaller than the number of light sources having a low priority.

Images