| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to easily identify a light-emitting device hardly emitting light from a plurality of light-emitting devices connected in series.SOLUTION: A plurality of light-emitting devices 100 are connected in series to each other. A light-emitting device 100 comprises: a first terminal 142; a second terminal 144; a light-emitting unit 110; wiring 130; a switching unit 120; and a control unit 150. The light-emitting unit 110 is provided between the first terminal 142 and the second terminal 144. The wiring 130 is provided between the first terminal 142 and the second terminal 144 and is electrically in parallel with the light-emitting unit 110. The switching unit 120 performs switching between a state (connection state) in which the first terminal 142 and the wiring 130 are connected to each other and a state (non-connection state) in which the first terminal 142 and the wiring 130 are not connected to each other. The control unit 150 controls the switching unit 120. Specifically the switching unit 120 connects the wiring 130 to the first terminal 142 when a light-emitting unit 110 of another light-emitting device 100 is inspected. |
