AUXILIARY LIGHTING CONTROL CIRCUIT AND LIGHT-EMITTING DEVICE

• Main Author: NADA TOMOKAZU
• Format: Patent
• Language: English; Japanese
• Published: 12.03.2020
• Subjects: ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY

To provide an auxiliary lighting control circuit which enables even a general-purpose PWM lighting control device to stably obtain deep lighting control without flickering and is further matched to human sight characteristics, and a light-emitting device.SOLUTION: The present invention relates to an auxiliary lighting control circuit which is used for a PWM lighting control and connected with a light-emitting circuit. The auxiliary lighting control circuit comprises: a switching circuit which controls electrification to the light-emitting circuit by a switching element; and a delay circuit which generates an ON signal to the switching circuit by receiving a PWM pulse waveform. A pulse-on time of the pulse waveform is equal to or greater than a predetermined value, the auxiliary lighting control circuit is started by generating the ON signal during a partial period of the pulse-on time, and values of the ON signal at the time of start and the ON signal at the time of maximum output are different.SELECTED DRAWING: Figure 1 【課題】汎用のＰＷＭ調光装置によっても、ちらつきなく安定して深い調光が得られる、より人の視覚特性に合った調光補助回路および発光装置を提供する。【解決手段】ＰＷＭ調光に用いられ、発光回路と接続される調光補助回路であって、発光回路への通電をスイッチング素子によって制御するスイッチング回路と、ＰＷＭのパルス波形を受けて、スイッチング回路へのオン信号を生成する遅延回路を備え、パルス波形のパルスオン時間が所定の値以上で、オン信号がパルスオン時間の一部期間で生成されて立ち上がり、立ち上がり時のオン信号と最大出力時のオン信号の値は異なることを特徴とする。【選択図】図１