LIGHTING BOARD UNIT, LAMP LIGHTING DEVICE, EMERGENCY LIGHT DEVICE, AND GUIDE LIGHT DEVICE

摘要

PURPOSE: To reduce malfunction caused by a high frequency noise and increase reliability of automatic checking operation by wiring and mounting an electronic circuit element of an automatic checking function circuit on a circuit board without being affected by a power source circuit element of an emergency lighting circuit and a high frequency circuit element. CONSTITUTION: A high frequency noise is produced by operation of a charging transformer 9 or an inverter transformer 11. An electronic circuit element such as diodes D2 -D5 in an automatic checking function circuit 18 is wired and mounted on a circuit board 25 in the position away from the charging transformer 9 or the inverter transformer 11, and thereby is hardly affected by the high frequency noise. Reliability in checking operation by batch control in a centralized control part is enhanced.