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公开(公告)号：EP3331326A1
公开(公告)日：2018-06-06
申请号：EP16830233.9
申请日：2016-07-01
CPC分类号： B60Q1/00 , B60Q1/04 , B60Q1/34 , H05B33/083
摘要： The invention achieves suitable operations related to turning on and off a light. For this purpose, the invention comprises: a voltage conversion unit for receiving a direct current voltage, performing voltage conversion, and supplying a drive current to a light source unit having a light-emitting element; a bypass switch forming a bypassing path for the drive current to bypass the light-emitting element; and a control unit controlling the voltage conversion unit and the bypass switch. When lighting the light-emitting element of the light source unit, the control unit first places the bypass switch in the on state and then causes the voltage conversion by the voltage conversion unit to start, and thereafter, turns the bypass switch off and causes the light-emitting element to illuminate.
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公开(公告)号：EP3984820A1
公开(公告)日：2022-04-20
申请号：EP20822545.8
申请日：2020-06-10
摘要： A scanning light source 100 includes a semiconductor light source 110 and a motor 120, and scans output light of the semiconductor light source 110 in front of a lamp according to the movement of the motor 120. A constant current driver 220 supplies a driving current I LED to the semiconductor light source 110 according to a light source control signal S6. A light source control signal generator 210 generates the light source control signal S6 so as to obtain a light distribution pattern that corresponds to light distribution instruction data. A delay time measurement device 260 measures the delay time τ required for the transition of the on/off states of the semiconductor light source 110 from the change of the light source control signal S6.
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公开(公告)号：EP3738830A1
公开(公告)日：2020-11-18
申请号：EP19738824.2
申请日：2019-01-09
发明人： KIKUCHI, Satoshi , MURAKAMI, Kentarou , TSUCHIYA, Toshiyuki , MURAMATSU, Takao , YANAGIZU, Shohei , ICHIKAWA, Tomoyuki
摘要： A scanning light source 10 includes a light source 110, and scans the output light of the light source 110 ahead of a lamp. A control apparatus 200 controls the lighting on/off state of the semiconductor light source in synchronization with the scanning operation of the scanning light source 10. The control apparatus 200 judges the presence or absence of an abnormal state with at least one from among (i) a timing immediately before switching from a lighting-on state to a lighting-off state and (ii) a timing immediately before switching from a lighting-off state to a lighting-on state as a judgment timing.
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公开(公告)号：EP3634090A1
公开(公告)日：2020-04-08
申请号：EP19211541.8
申请日：2016-07-01
摘要： The present invention realizes an appropriate operation of turning-on and turning off lighting. A lighting circuit includes a voltage conversion unit which is configured to receive a DC voltage to perform voltage conversion and supply a drive current to a light source unit including a plurality of light emitting elements, a bypass path which includes a plurality of bypass switches which are connected in parallel with the light emitting elements and are connected in series; and a control unit which is configured to control the voltage conversion unit and the bypass switches. In the lighting circuit, when turning off all of the light emitting elements from a state where at least one light emitting element is on, the control unit controls the voltage conversion to stop after turning on all of the bypass switches.
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