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    LAMP UNIT
    8.
    发明公开
    LAMP UNIT 审中-公开

    公开(公告)号：EP4265959A1

    公开(公告)日：2023-10-25

    申请号：EP21906360.9

    申请日：2021-12-02

    申请人： KOITO MANUFACTURING CO., LTD.

    发明人： MURAMATSU, Teppei ,  UGAJIN, Yuta

    IPC分类号： F21S41/24 ,  F21S41/255 ,  F21S41/32 ,  F21S41/663 ,  F21W102/135 ,  F21Y115/10

    摘要： A light unit including a projection lens can form a low-beam light distribution pattern and a high-beam light distribution pattern appropriately in addition to promoting a cost reduction based on a reduction in the number of components of the light unit. It is configured in such a manner that a light guide (40) is placed between a light source (20) and a projection lens (30), and includes a first exit surface (42A) for emitting light for a low-beam light distribution pattern and a second exit surface (42B) for emitting light for an additional light distribution pattern that is added to form a high-beam light distribution pattern. In addition, the light guide (40) is configured in such a manner as to be provided with a mirror surface portion (42C1) on a connection surface (42C) extending toward the back of the unit from a lower edge (42Aa) of the first exit surface (42A) to an upper edge (42Ba) of the second exit surface (42B). As a result, light from a light-emitting element (22D) that has been emitted through the second exit surface (42B) and reached the connection surface (42C) is reflected by the mirror surface portion (42C1) to be used as the light for forming the additional light distribution pattern.