一种LED型的机动车前照灯 LED type motor vehicle headlight
技术领域 Technical field
本实用新型属于机动车的照明灯具，特别是一种LED型的机动车前照灯。 The utility model belongs to a lighting fixture of a motor vehicle, in particular to an LED type motor vehicle headlight.
背景技术 Background technique
前照灯，结构一般由灯罩、灯壳、反光碗、灯丝灯泡、灯座、防尘盖、灯光调整螺钉等组成。灯泡内有两条灯丝，一条为远光灯丝，一条为近光灯丝。远光灯丝位于反光碗的焦点上，其反射光线是平行水平光线，在配光屏幕上呈椭圆状光斑；近光灯丝则位于反光碗焦点的上方，其反射光线为向下的平行光线，在配光屏幕上产生明暗截止线。前照灯的灯光高低可以通过灯光调整螺钉来进行调节。这种采用灯丝灯泡的前照灯存在照明耗电耗能较大、熄火情况下照明持续时间短、灯泡寿命短等缺陷。因此目前已经出现了采用LED光源的前车灯，用以克服照明耗电耗能较大、熄火情况下照明持续时间短、灯泡寿命短等问题。 Similar vehicles currently in common use
The headlights are generally composed of a lampshade, a lamp housing, a reflective bowl, a filament bulb, a lamp holder, a dust cover, and a light adjustment screw. There are two filaments in the bulb, one for the high beam and one for the low beam. The high beam is located at the focus of the reflective bowl, and the reflected light is parallel horizontal light, and has an elliptical spot on the light distribution screen; the low beam filament is located above the focus of the reflective bowl, and the reflected light is downward parallel light. A cut-off line is formed on the light distribution screen. The headlights can be adjusted by the light adjustment screws. Such a headlamp using a filament bulb has drawbacks such as large energy consumption of lighting, short duration of illumination in the event of flameout, and short lamp life. Therefore, the front lamp adopting the LED light source has been appeared to overcome the problems of large energy consumption of the lighting, short duration of illumination in the case of flameout, and short lamp life.
前照灯不好布置，与处在外段光杯相配合的LED灯也不便于固定安装、且对内段光杯发射的光线和与其配合的LED灯发射的光线造成一定的遮挡；二是由于LED灯最亮的中心发光点朝前方直照，会对来车驾驶员和其它道路使用者造成眩目或不舒适感，容易产生交通事故，车辆道路行驶安全效果差，而且光照不均匀性过大，照明效果不佳甚至有害。 Chinese Patent No. 201110375197.3 provides an LED front light that can be used as a motor vehicle
Headlights. The structure comprises a low beam group, a high beam group, a PCB board and a heat sink; the low beam group and the high beam group are mounted on the PCB board, and the rear part of the PCB board is provided with a heat sink; The low beam group includes an LED lamp and a low beam; the high beam group includes an LED lamp and a high beam; the inner surface of the low beam and the high beam are mirrored, and the The mirror surface is divided into a plurality of irregular free-form surfaces along the axial direction; the cups of the low-light cup and the high-beam cup are respectively divided into at least three segments in the axial direction, and each segment illuminates different regions. The shortcomings of this technical solution are as follows: because the high beam and the low beam are arranged coaxially and arranged in front and rear according to the axis, the total length of the mirror and the lamp body is long.
The headlights are not well arranged, and the LED lights that are matched with the outer light cups are not convenient for fixed installation, and the light emitted by the inner light cups and the light emitted by the LED lights cooperated with them are blocked; secondly, The brightest central light-emitting point of the LED light is directed straight ahead, which will cause dazzling or uncomfortable feeling to the driver and other road users. It is easy to cause traffic accidents, the road driving safety effect is poor, and the illumination unevenness is excessive. Large, poor lighting or even harmful.
Chinese Patent No. 201120376957.8 provides an LED lamp with temperature protection function. The structure comprises a reflective bowl, an LED driving circuit unit fixed on the reflective bowl and an LED chip, wherein the LED chip has a temperature sensor on the chip base, and the signal output end of the temperature sensor and the LED The feedback signal input terminal of the drive circuit unit is connected. From the illustration, the direction of the brightest central light-emitting point of the LED light forms an angle of 90° with the axis of the light cup, that is, the brightest central light-emitting point of the LED light is toward the reflective bowl, which is refracted toward the front by the reflective bowl, and can solve the most The bright central glow point causes glare problems. However, this technical solution is not suitable for use due to such defects.
Motor vehicle headlights: First, it is impossible to realize a headlight with both low beam and high beam conversion; second, the lower side of the reflective surface of the reflective bowl forms a light-receiving corner, so that the brightness of the forward-illuminated beam is uneven, and the illumination effect is not good.
发明内容 Summary of the invention
LED 型的机动车前照灯 ，可以克服现有技术的缺陷。 In order to overcome the existing
The headlights of the headlights have a light between the low beam and the high beam in the headlights, and the brightest central light emitting point of the LED lights directly toward the front, causing glare and uneven illumination of the forward beam. The mirror has defects such as light dead angle, and the object of the present invention is to provide an improved
LED type motor vehicle headlamps can overcome the drawbacks of the prior art.
。 The technical solution adopted by the utility model to solve the technical problem is: an LED type motor vehicle headlight
The utility model comprises a lamp cup body, a mirror, a light transmitting mirror, an LDE lamp, an LED driving circuit board and a heat sink, wherein the mirror is arranged on the inner wall surface of the lamp cup, the light transmitting mirror is arranged on the front port of the lamp cup body, and the radiator is provided On the lamp cup body, the LED driving circuit board is mounted on the heat sink, the LDE lamp is connected and fixed on the LED driving circuit board and is in the lamp cup body, and the power end of the LED driving circuit board can be connected to the lamp external power source through the wire, and its characteristics Yes: the inner cavity of the lamp cup is divided into an upper side portion and a lower side portion by a horizontally-shaped partition plate, the inner wall surface of the upper side portion is provided with a low beam reflector, and the lower side portion is partitioned by the partition plate to the left side. a portion of the right side portion, the left side portion and the inner wall portion of the right side portion are respectively provided with a high beam reflector, and the upper side portion, the left side portion and the right side portion are respectively disposed on the horizontally-displaced partition plate The LDE lamp, the center of the LDE lamp has a light-emitting point oriented perpendicular to the horizontally-shaped partition plate and directly illuminates the low beam reflector or the high beam reflector respectively
。 The above technical solution
The heat sink may be mounted on the outer back surface of the lamp cup body, and the heat absorbing end of the heat sink extends from the outer back surface of the horizontally-shaped partition plate into the horizontally-shaped partition plate, and the LED driving circuit board is mounted on the heat sink. The LDE lamps on the LED drive circuit board are exposed to the upper side portion, the left side portion or the right side portion respectively by the apertures on the horizontally-displaced partition plate
下侧部分分隔成左侧部分和右侧部分的隔板可以为一带有双弧线的隔板，该双弧线与呈水平状态的隔板一起构成所述两个远光灯反光镜的边缘。 The above technical solution will
The partition partitioned into the left side portion and the right side portion of the lower side portion may be a partition having a double arc which, together with the partition plate in a horizontal state, constitutes the edge of the two high beam mirrors .
上述技术方案的 所述左侧部分和右侧部分之间的隔板上可以设置有一前位置灯。 A front position light may be disposed on the partition between the left side portion and the right side portion of the above technical solution.
上述技术方案的所述 前位置灯可以是一LED灯或白炽灯等。 The front position light of the above technical solution may be an LED lamp or an incandescent lamp or the like.
上述技术方案的所述 灯杯体的内腔部，从正面看可以是呈圆形状。 The inner cavity portion of the lamp cup body of the above aspect may have a circular shape when viewed from the front.
上侧部分的LDE灯可以是处于远光灯反光镜的焦点上方位置，以使近光灯反光镜所反射的光线为向下的平行光线，在配光屏幕上产生明暗截止线；所述布置在左侧部分和右侧部分的LDE灯可以是处于各自的远光灯反光镜的焦点位置，以使远光灯反光镜所反射的光线为平行水平光线，在配光屏幕上呈明亮椭圆状光斑。 The arrangement of the above technical solution is
The LDE lamp of the upper side portion may be located above the focus of the high beam reflector such that the light reflected by the low beam reflector is a downward parallel light, and a cut-off line is generated on the light distribution screen; The LDE lamps in the left and right portions may be in the focus position of the respective high beam mirrors such that the light reflected by the high beam reflector is parallel horizontal light and brightly elliptical on the light distribution screen. Spot.
驱动电路板可以由印刷电路板体和安装在其上的电路部分构成，电路部分可以由型号AL8806的驱动器集成电路及其外围的稳压二极管、电容、电阻、电感器作对应连接构成。 The LED of the above technical solution
The driving circuit board can be composed of a printed circuit board body and a circuit portion mounted thereon, and the circuit portion can be constituted by a driver integrated circuit of the model AL8806 and a peripheral Zener diode, a capacitor, a resistor and an inductor.
由于采用 LED 灯作为光源，所以整车电路承载的电流小，电缆短路的几率小，不容易发热，有利于道路行驶安全；
The utility model has the beneficial effects that since the inner cavity of the lamp cup is divided into the upper side part and the lower side part by the partition plate in a horizontal state, the inner wall surface of the upper side part is provided with a low beam reflector and the lower side part is partitioned by the partition plate. Separated into a left side portion and a right side portion, the left side portion and the right side portion are respectively provided with a high beam mirror, and the upper side portion, the left side portion and the right side portion are in a horizontal state. Each of the LDE lamps is arranged on the upper side, so that the headlights can realize the far and near light changes, and the light between the low beam and the high beam in the headlight does not have mutual occlusion; due to the LDE lamp center The light-emitting point is oriented perpendicular to the horizontally-displaced partition and directly illuminates the low beam reflector or the high beam reflector, respectively, and does not directly face forward, so that the light is reflected forward by the reflection of the mirror Parallel injection, soft light, uniform beam brightness, especially for the driver and other road users, there is no glare or discomfort, can reduce traffic accidents and improve vehicle road safety; The inner cavity of the lamp cup is divided into an upper side part and a lower side part by a horizontally-shaped partition plate, and the LDE lamp is arranged on the horizontally-displaced partition plate, and the upper side part, the left side part or the right side part inner wall surface are not Will produce a light dead angle, so the forward beam is uniform in brightness and the lighting effect is good;
Since the LED light is used as the light source, the current carried by the whole vehicle circuit is small, the probability of the cable short circuit is small, and it is not easy to generate heat, which is beneficial to road driving safety;
Since the front position light can also be disposed on the partition between the left side portion and the right side portion, the front position light can be combined in the headlight of the motor vehicle, thereby improving the use function of the headlight and saving the machine. Motor car to be installed separately
The cost of the front position light.
以下结合实施例对本实用新型作更具体的描述。 The present invention will be more specifically described below in conjunction with the embodiments.
图1是本实用新型一个实施例的正面示意图。 1 is a front elevational view of one embodiment of the present invention.
图2是图1的A-A剖视示意图。 Figure 2 is a cross-sectional view taken along line A-A of Figure 1.
图3是图1的B-B剖视示意图。 Figure 3 is a cross-sectional view taken along line B-B of Figure 1.
图4是图1的任一个LED驱动电路板上电路部分的线路原理图。 4 is a circuit schematic diagram of a circuit portion of any of the LED drive circuit boards of FIG. 1.
In the figure: 1, lamp cup body; 2, mirror; 3, light-transmitting mirror; 4, LDE lamp; 5, LED drive circuit board; 6, radiator; 7, horizontal state of the partition; 8, upper side Part; 9, low beam reflector; 10, partition; 11, left part; 12, right part; 13 and 14, high beam reflector; 15, front position light; 16, endothermic end; , orifice; 18 and 19, LDE lamps.
具体实施方式 detailed description
，包括灯杯体1、反光镜2等、透光镜3、LDE灯4等、LED驱动电路板5等和散热器6，其中反光镜2设于灯杯体1内壁面上，透光镜3设于灯杯体1前端口上，散热器6设于灯杯体1上，LED驱动电路板5安装于散热器6上，LDE灯4连接固定于LED驱动电路板5上且处于灯杯体1内，LED驱动电路板5的电源端通过导线可接往灯外电源，其特征是：所述灯杯体1内腔由呈水平状态的隔板7分割为上侧部分8和下侧部分，上侧部分8的内壁面设置着一近光灯反光镜9，下侧部分由隔板10分隔为左侧部分11和右侧部分12，左侧部分11和右侧部分12的内壁面分别设置着一远光灯反光镜13、14，所述上侧部分8、左侧部分11或右侧部分12内在呈水平状态的隔板7上分别布置有一所述LDE灯4等，LDE灯4等的中心发光点的朝向与呈水平状态的隔板7垂直而分别直照着所述近光灯反光镜9或远光灯反光镜13、14。 Referring to Figures 1 to 3, the LED type motor vehicle headlights
The utility model comprises a lamp cup body 1, a mirror 2, a light transmissive mirror 3, an LDE lamp 4, etc., an LED driving circuit board 5 and the like, and a heat sink 6, wherein the mirror 2 is disposed on the inner wall surface of the lamp cup body 1 and the light transmitting mirror 3 is disposed on the front port of the lamp cup body 1, the heat sink 6 is disposed on the lamp cup body 1, the LED driving circuit board 5 is mounted on the heat sink 6, and the LDE lamp 4 is connected and fixed on the LED driving circuit board 5 and is in the lamp cup In the body 1, the power supply end of the LED driving circuit board 5 can be connected to the external power source through the wire, and the inner cavity of the lamp cup body 1 is divided into the upper side portion 8 and the lower side by the partition plate 7 in a horizontal state. In part, the inner wall surface of the upper side portion 8 is provided with a low beam mirror 9, and the lower portion is partitioned by the partition 10 into the left side portion 11 and the right side portion 12, and the inner wall portions of the left side portion 11 and the right side portion 12 are provided. A high-beam reflectors 13 and 14 are respectively disposed, and the LDE lamps 4 and the like are arranged on the partitions 7 in the horizontal state in the upper side portion 8, the left side portion 11 or the right side portion 12, respectively, and the LDE lamps are arranged. The center light-emitting points of 4 and the like are oriented perpendicular to the horizontally-deposited partitions 7 and directly illuminate the low beam mirrors 9 or the high beam mirrors 13, 14 respectively.
另外， 所述左侧部分11和右侧部分12之间的隔板10上设置有一前位置灯15 ；
上侧部分8的LDE灯4是处于近光灯反光镜9的焦点上方位置，以使近光灯反光镜9所反射的光线为向下的平行光线；布置在左侧部分11和右侧部分12的LDE灯18、19是分别处于远光灯反光镜13、14的焦点位置，以使远光灯反光镜13、14所反射的光线为平行水平光线。 In addition, a front position light 15 is disposed on the partition 10 between the left side portion 11 and the right side portion 12;
The heat sink 6 is mounted on the outer back surface of the lamp cup body 1, and the heat absorbing end 14 of the heat sink 6 extends from the outer back surface of the horizontally-disposed partition plate 7 into the partition plate 7 in a horizontal state, the LED drive circuit The LDE lamps 4 and the like which are respectively mounted on the upper and lower sides of the heat absorbing end 16 of the heat sink 6, the LED drive circuit board 5, and the like are respectively exposed by the apertures 17 and the like on the partition plate 7 in the horizontal state, respectively. The upper side portion 8, the left side portion 11 or the right side portion 12
The partition 10, which is partitioned into the left side portion 11 and the right side portion 12, is a partition having a double arc which, together with the partition plate 7 in a horizontal state, constitutes the reflection of the two high beam lights The edge of the mirrors 13 and 14; the front position lamp is an LED lamp; as shown in Fig. 1, the inner cavity portion of the lamp cup body has a circular shape when viewed from the front;
The LDE lamp 4 of the upper side portion 8 is at a position above the focus of the low beam mirror 9 such that the light reflected by the low beam mirror 9 is a downward parallel light; the left portion 11 and the right portion are arranged. The LDE lamps 18, 19 of 12 are in the focus positions of the high beam reflectors 13, 14, respectively, so that the light reflected by the high beam reflectors 13, 14 is parallel horizontal light.
驱动电路板5上电路部分的线路原理图，由型号AL8806的驱动器集成电路IC及其外围的稳压二极管D1和D2、电容C1～C4、电阻R1～R3、电感器L作对应连接构成，灯外电源由稳压二极管D1输入后，经过IC的处理后，从IC的1脚输出驱动信号，驱动LED灯发光。 Referring to Figure 4, LED
The circuit schematic diagram of the circuit part on the driving circuit board 5 is composed of the driver integrated circuit IC of the model AL8806 and its peripheral Zener diodes D1 and D2, capacitors C1 to C4, resistors R1 to R3, and inductor L for corresponding connection. After the external power supply is input from the Zener diode D1, after the IC process, the drive signal is output from the 1 pin of the IC to drive the LED light to emit light.