CN104832859B - 一种远近光一体的前照灯 - Google Patents
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Abstract
本发明公开了一种远近光一体的前照灯,包括LED光源模块、集光装置和透镜;LED光源模块发出远光或近光经集光装置传输射出后,再经透镜折射后出射,形成近光或远光的配光光型;本发明采用LED光源作为远近光一体设计光源,并且省去电机或电磁阀机构,简化模组结构,提高整个模组使用寿命;并且提高远近光变换的响应速度,LED光源响应速度较快,这样由近光灯变换为远光灯,或者由远光灯变换为近光灯时,模组响应时间相应缩短。
Description
技术领域
本发明涉及汽车照明领域,具体涉及一种远近光一体的前照灯。
背景技术
目前大部分汽车为了节省空间及造型需求,在设计时,将远光灯与近光灯设计成一体式的结构。传统的远近光照明灯具有H4光源,包含两个灯丝,采用一个反射镜形成远近光一体的设计。也有投影灯式的设计,采用同一个光源、反射镜和透镜,与单功能投影灯不同的是,挡板可以活动,处在两个位置,由电机或者电磁阀来完成在两个位置的转换,这种结构在远近光变化的过程中,响应时间比较长。随着光源技术的发展,LED光源光效更高,寿命更长,但采用LED作为远近光一体设计光源时,电机或电磁阀的寿命将影响整个模组的寿命。现有的前照灯不仅远近光响应时间过长,且模组使用寿命短。
发明内容
本发明的目的在于克服现有技术的不足,提供一种能够提高远近光变换的响应速度,且提高整个模组使用寿命的远近光一体的前照灯。
为了实现上述目的,本发明采用的技术方案为:
该种远近光一体的前照灯,包括LED光源模块、集光装置和透镜;LED光源模块发出远光或近光经集光装置传输射出后,再经透镜折射后出射,形成近光或远光的配光光型。
所述LED光源模块包括LED近光灯光源及LED远光灯光源。
所述集光装置包括LED近光灯光源的近光集光装置和LED远光灯光源的远光集光装置;所述近光集光装置包括靠近LED近光灯光源的近光灯光耦合器和近光输出端,所述远光集光装置包括靠近LED远光灯光源的远光灯光耦合器和远光输出端。
所述LED近光灯光源的近光输出端设在所述透镜的焦点处;所述LED远光灯光源的远光输出端设在透镜焦点后方。
所述LED远光灯光源的远光输出端设在透镜焦点后方2-4mm处。
所述LED远光灯光源的远光输出端设在透镜焦点后方3mm处。
所述LED近光灯光源的近光输出端形成的明暗截止线的拐点位置位于透镜的中心线上;所述LED近光灯光源的近光输出端设于所述LED远光灯光源的远光输出端的上方。
所述LED近光灯光源的近光输出端形成的明暗截止线斜线为15°倾角,或者所述LED近光灯光源的近光输出端形成的明暗截止线斜线为45°倾角。
所述LED远光灯光源的远光输出端和所述LED近光灯光源的近光输出端相贴合。
所述透镜为非球面投影透镜;所述集光装置由透明导光材料制成。
本发明的优点在于:该种远近光一体的前照灯,采用LED光源作为远近光一体设计光源,并且省去电机或电磁阀机构,简化模组结构,提高整个模组使用寿命,并且提高远近光变换的响应速度;LED光源响应速度较快,这样由近光灯变换为远光灯,或者由远光灯变换为近光灯时,模组响应时间相应缩短。
附图说明
下面对本发明说明书各幅附图表达的内容及图中的标记作简要说明:
图1为本发明远近光一体的前照灯的结构示意图。
图2为图1远近光一体的前照灯的仰视示意图。
图3为图1远近光一体的前照灯的右视示意图。
图4为图1远近光一体的前照灯的正视示意图。
图5为图4远近光一体的前照灯的A-A剖视示意图。
图6(A)和图6(B)为远近光一体的前照灯的光输出端的结构示意图。
图7为GB25991中的LED前照灯配光屏幕图。
上述图中的标记均为:
1——LED光源模块;1L——LED近光灯光源;1H——LED远光灯光源;2——集光装置;2L——近光集光装置;2H——远光集光装置;21——光耦合器;21L——近光灯光耦合器;21H——远光灯光耦合器;22——光输出端;22L——近光输出端;22H——远光输出端;3——透镜。
具体实施方式
下面对照附图,通过对最优实施例的描述,对本发明的具体实施方式作进一步详细的说明。
该种远近光一体的前照灯,包括LED光源模块1、集光装置2和透镜3,集光装置2设于LED光源模块1和透镜3之间;LED光源模块1发出远光或近光经集光装置2传输射出后,再经透镜3折射后出射,形成近光或远光的配光光型。采用LED光源作为远近光一体设计光源,并且省去电机或电磁阀机构,简化模组结构,提高整个模组使用寿命,并且提高远近光变换的响应速度。
LED光源模块1包括LED近光灯光源1L及LED远光灯光源1H。LED近光灯光源1L作为近光的发光光源,LED近光灯光源1L为一颗以上,LED远光灯光源1H作为远光的发光光源,LED远光灯光源1H为一颗以上。LED近光灯光源1L及LED远光灯光源1H的数目不局限为一颗,具体数目根据实际需求调整设置。
集光装置2包括LED近光灯光源1L的近光集光装置2L和LED远光灯光源1H的远光集光装置2H;近光集光装置2L包括近光灯光耦合器21L和近光输出端22L,近光灯光耦合器21L位于近光集光装置2L靠近LED近光灯光源1L的一端上,近光输出端22L位于近光集光装置2L的另一端上;远光集光装置2H包括远光灯光耦合器21H和远光输出端22H,远光灯光耦合器21H位于远光集光装置2H靠近LED远光灯光源1H的一端上,远光输出端22H位于远光集光装置2H的另一端上。近光灯光耦合器21L及远光灯光耦合器21H将LED光源模块1发出的光线耦合到集光装置内,近光灯光耦合器21L及远光灯光耦合器21H靠近LED光源,能更多的收集LED光源发出的光线。光线在集光装置2中利用光的全反射原理进行传导,然后从光输出端输出,再经透镜3折射后出射。
LED近光灯光源1L的近光输出端22L设在透镜3的焦点处;LED远光灯光源1H的远光输出端22H可设在透镜3的焦点处;优选LED远光灯光源1H的远光输出端22H设在透镜3焦点后方,这样光线能按较好的路径进入透镜3后折射射出,能够提高光入射效率,达到较好的照明效果。
作为优选方案,LED远光灯光源1H的远光输出端22H设在透镜3焦点后方2-4mm处。即远光灯远光输出端22H距离近光灯近光输出端21H有2-4mm的距离。该种远近光一体的前照灯远光照明效果较好。
作为进一步地优选方案,LED远光灯光源1H的远光输出端22H设在透镜3焦点后方3mm处;光线能按较好的路径进入透镜3后折射射出,进一步地达到更好的照明效果。
LED近光灯光源1L的近光输出端22L形成的明暗截止线的拐点位置位于透镜3的中心线上;LED近光灯光源1L的近光输出端22L设于LED远光灯光源1H的远光输出端22H的上方。光线能按较好的路径进入透镜3后折射射出,进一步地达到更好的照明效果。
LED近光灯光源1L的近光输出端22L有特定的比较严格的形状,这个特定的形状有两种型式,这两种型式是依据LED前照灯配光法规GB25991-2010,具体的,LED近光灯光源1L的近光输出端22L形成的明暗截止线斜线为15°倾角,或者LED近光灯光源1L的近光输出端22L形成的明暗截止线斜线为45°倾角。
LED远光灯光源1H的远光输出端22H和LED近光灯光源1L的近光输出端22L相贴合。远光输出端22H和近光输出端22L比较贴合,能够保证光线折射效果,为了比较贴合,远光输出端22H依据近光灯输出端的形状进行配合设计。
同传统投影灯一样,透镜3为非球面投影透镜,节省成本;集光装置2由透明导光材料制成,如玻璃或PC或耐温PMMA制成等透明导光材料制成。集光装置2位置布置于LED光源模块1与透镜3之间,集光装置2将LED光源模块1发出的光线收集并由另外一个端口输出。光线在集光装置2中传导是利用光的全反射原理。为了更多的收集LED光源模块1发出的光线,集光装置2的输入端靠近LED光源模块1,并设计有光耦合器21,集光装置2的另外一端为光输出端22。
本发明提供的远近光一体的前照灯,采用LED光源作为远近光一体设计光源,并且省去电机或电磁阀机构,简化模组结构,提高整个模组使用寿命,并且提高远近光变换的响应速度。本方案所包含的部件有LED光源,透镜3与集光装置2,与传统的投影灯相比较减少了部件遮光板和转换电磁阀,通过增加LED光源来实现远光灯。LED光源响应速度较快,这样由近光灯变换为远光灯,或者由远光灯变换为近光灯时,模组响应时间相应缩短。
显然本发明具体实现并不受上述方式的限制,只要采用了本发明的方法构思和技术方案进行的各种非实质性的改进,均在本发明的保护范围之内。
Claims (3)
1.一种远近光一体的前照灯,其特征在于:包括LED光源模块、集光装置和透镜;LED光源模块发出远光或近光经集光装置传输射出后,再经透镜折射后出射,形成近光或远光的配光光型;所述LED光源模块包括LED近光灯光源及LED远光灯光源;所述集光装置包括LED近光灯光源的近光集光装置和LED远光灯光源的远光集光装置;所述近光集光装置包括靠近LED近光灯光源的近光灯光耦合器和近光输出端,近光灯光耦合器位于近光集光装置靠近LED近光灯光源的一端上,近光输出端位于近光集光装置的另一端上;所述远光集光装置包括靠近LED远光灯光源的远光灯光耦合器和远光输出端;远光灯光耦合器位于远光集光装置靠近LED远光灯光源的一端上,远光输出端位于远光集光装置的另一端上;所述LED近光灯光源的近光输出端设在所述透镜的焦点处;所述LED远光灯光源的远光输出端设在透镜焦点后方;所述LED远光灯光源的远光输出端设在透镜焦点后方3mm处;所述LED近光灯光源的近光输出端形成的明暗截止线的拐点位置位于透镜的中心线上;所述LED近光灯光源的近光输出端设于所述LED远光灯光源的远光输出端的上方;所述LED远光灯光源的远光输出端和所述LED近光灯光源的近光输出端相贴合。
2.如权利要求1所述的远近光一体的前照灯,其特征在于:所述LED近光灯光源的近光输出端形成的明暗截止线斜线为15°倾角,或者所述LED近光灯光源的近光输出端形成的明暗截止线斜线为45°倾角。
3.如权利要求1所述的远近光一体的前照灯,其特征在于:所述透镜为非球面投影透镜;所述集光装置由透明导光材料制成。
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