| 摘要 |
PURPOSE:To facilitate controls by furnishing a residual illumination circuit, putting off delayed from main illumination, locating the clock start point identical to the point of time where the logical sum of lighting-up of a plurality of main illuminations is attained. CONSTITUTION:A control board 10 sends control signals to on/off terminal units 11-14 via a transmission line 15 to control the A, B systems of main illuminations, residual lamp 7, and insecticide lamp 8. First the main illumination A is lit followed by lighting-up of the other main B after passage of a certain time, and at the same time, the residual lamp 7 and insecticide lamp 8 are lit up. At the time of putting off, the main illumination A is put off followed by the other B after passage of a certain time. Clocking of delay times of the resudual lamp 7 is started at the point of time when there is a logical sum of the point of timewith either of the main illuminations A, B lighted. After passage of delay time, the residual lamp 7 and insecticide lamp 8 are put off. Thereby the clock start point in the timing of circuit operation is specified to ensure that the residual lamp circuit is controlled easily. |
