LIGHT-EMITTING ELEMENT ILLUMINATION LAMP DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a light-emitting element illumination lamp device capable of improving safety and reliability by preventing influence on a main light source and a peripheral circuit by turning off the main light source when an error is detected in the main light source, and also capable of improving convenience for users and maintenance workers.

SOLUTION: A light-emitting element illumination lamp device 1 comprises: a main light source unit 20 which is turned on upon receiving electric power from a first power supply unit 10; a second power supply unit 30 which is connected to an AC power supply 2 to configure a standby power supply differently from the first power supply unit 10; a sub-light source unit 40 which is turned on upon receiving electric power from the second power supply unit 30; and a main control unit 50 which performs the entire control. The main light source unit 20 comprises: a main light source 21 having a light-emitting element LED; a first constant current control unit 23 which drives the main light source 21 with constant current; and a main light source error detection unit 25 which detects an error in the main light source 21. The sub-light source unit 40 includes a sub-light source 41 (sub-light-emitting element SLED) and a second constant current control unit 43 which drives the sub-light source 41 with constant current.

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