CN202082776U

CN202082776U - Automotive head lamp with multiple light forms

Info

Publication number: CN202082776U
Application number: CN201120091827XU
Authority: CN
Inventors: 李路祥; 郭岩松; 周志庆
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2011-03-31
Filing date: 2011-03-31
Publication date: 2011-12-21
Anticipated expiration: 2021-03-31

Abstract

The utility model discloses an automotive head lamp with multiple light forms, which consists of a lamp bulb, a reflecting mirror, a light-shading plate, an ellipsoidal lens, a light-shading rotating shaft and a step motor; the light-emitting point of the lamp bulb is positioned on the focal point of the reflecting mirror; the ellipsoidal lens is fixed in front of the reflecting mirror and shares the same optical axis with the reflecting mirror; the light-shading plate is mounted between the reflecting mirror and the ellipsoidal lens and is positioned below the light axis of the ellipsoidal lens; the light-shading rotating shaft is horizontally mounted above the light-shading plate and is perpendicular to the optical axis of the ellipsoidal lens; a plurality of axial light-shading strips with different widths are arranged on the side surface of the light-shading rotating shaft; the output shaft of the step motor is coaxially connected with the light-shading rotating shaft; and the driving signal input end of the step motor is connected with a control circuit. For the automotive head lamp with multiple light forms, the brightness and the light illumination direction of the head lamp are determined jointly by the plurality of light-shading strips on the light-shading rotating shaft and the light-shading plate; the light forms of the head lamp can be adjusted by changing the rotation angle of the light-shading rotating shaft, so that the light forms are matched with the running environment; and the safety of driving a car is improved greatly.

Description

Many light shape car headlamp

Technical field

The utility model relates to a kind of car headlamp with multiple light illumination mode, belongs to the lighting device technical field.

Background technology

Headlamp is the road illumination device of automobile, and in order to ensure traffic safety, car headlamp should have multiple smooth shape, to adapt to the different running environments of automobile.For example in the urban district, should use dipped beam during travels down, need use distance light when not having the travels down of car, when the sleet travels down, should use rainy day light shape or the like so that remote illumination to be provided on opposites such as highways.The light shape of car headlamp is by its light distribution mechanism decision, the light distribution mechanism of headlamp generally is made of speculum, lens, shadow shield, the shape and the relative position between the parts of each parts all are changeless in the tradition headlamp light distribution mechanism, therefore its light shape is single, general every lamp can only be realized a kind of smooth shape, multipotency is realized two kinds of light shapes of far light and near light, is difficult to adapt to running environment complicated and changeable, can not satisfy the safe driving requirement.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of many light shape car headlamp, to satisfy the needs of safe driving.

Problem described in the utility model realizes with following technical proposals:

A kind of many light shape car headlamp, by bulb, speculum, shadow shield, the ellipsoid lens, shading rotating shaft and stepper motor are formed, the luminous point of described bulb is positioned on the focus of speculum, described ellipsoid lens be fixed in speculum the place ahead and with the same optical axis of speculum, described shadow shield is installed between speculum and the ellipsoid lens and is positioned at the below of ellipsoid lens axis, described shading rotating shaft level is installed on the top of shadow shield and perpendicular to the optical axis of ellipsoid lens, its side is provided with the different axial shield bars of a plurality of width, the output shaft of described stepper motor is connected with the shading rotating shaft is coaxial, its driving signal input connection control circuit.

Above-mentioned many light shape car headlamp, described Stepping Motor Control circuit is made up of single-chip microcomputer, rainfall light sensor, vehicle speed sensor, headlamp switch and far and near light dimmer switch, the signal output part of described rainfall light sensor and vehicle speed sensor connects the P0.3 and the P0.4 port of single-chip microcomputer respectively, described headlamp switch and far and near light dimmer switch one termination power positive pole, the other end connects the P0.0 and the P0.1 port of single-chip microcomputer respectively, and the P1.0 port of described single-chip microcomputer connects the driving signal input of stepper motor.

Above-mentioned many light shape car headlamp also comprises the left and right rudder change-over switch in the formation of described Stepping Motor Control circuit, described left and right rudder change-over switch one termination power positive pole, and the other end connects the P0.2 port of single-chip microcomputer.

The utility model is provided with the shading rotating shaft above the shadow shield of orthodox car headlamp, determine the brightness and the direction of illumination of headlamp jointly by a plurality of shield bars in the shading rotating shaft and shadow shield, just can adjust the light shape of headlamp by the corner that changes the shading rotating shaft, make it to be complementary, improved traveling security greatly with running environment.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sectional view of shading rotating shaft;

The electrical schematic diagram of the stepping motor control circuit that Fig. 3 is.

Each label is among the figure: 1, shading rotating shaft; 2, shadow shield; 3, ellipsoid lens; 4, bulb; 5, speculum; 6, control circuit; A, B, C, D, E, F, shield bars; M, stepper motor; U1, single-chip microcomputer; U2, rainfall light sensor; U3, vehicle speed sensor; K1, headlamp switch; K2, far and near light dimmer switch; K3, left and right rudder change-over switch.

The specific embodiment

Referring to Fig. 1, Fig. 2, the shape and the relative position of bulb 4 of the present utility model, speculum 5, shadow shield 2 and ellipsoid lens 3 immobilize, and the shading rotating shaft 1 of bulb 4 the place ahead shadow shields 2 tops links to each other with stepper motor M is coaxial, can lean on the driving of stepper motor M and rotates.Shading rotating shaft 1 is provided with a plurality of shield bars, be similar to the tooth on the gear, the (see figure 2) but the shape and size of shield bars have nothing in common with each other, when shield bars is positioned at that the top time will shelter from bulb the place ahead and by the part light of mirror reflects, thus corresponding a kind of smooth shape.The size and dimension of shield bars is determined according to luminous intensity distribution calculating and physical varification in the shading rotating shaft 1, corresponding a kind of driving of each shield bars institute light requirement shape.Single-chip microcomputer U1 judges the running environment of vehicle according to signals such as each sensor of vehicle and switches, determine best illumination light shape, and control signal sent to stepper motor M, stepper motor M receives the control signal that single-chip microcomputer U1 sends and drives the shading rotating shaft and turns to corresponding angle.

The realization of different light illumination modes:

Under original state, directly over shield bars A in the shading rotating shaft 1 is positioned at, this shield bars is realized left rudder dipped beam light shape light illumination mode, if vehicle travels on the left lateral road, when needing to use right standard rudder light shape, driver's operation left and right rudder change-over switch K3, single-chip microcomputer sends set of pulses signal to stepper motor M after receiving the change-over switch signal, stepper motor M drives shading rotating shaft 1 and rotates to directly over shield bars D is positioned at, and realizes right standard rudder dipped beam light shape light illumination mode, avoids causing dazzling to the opposite vehicle; When driver's operation dimmer switch K2 when distance light keeps off, single-chip microcomputer U1 sends corresponding pulse signal to stepper motor M after receiving this signal, stepper motor M drives shading rotating shaft 1 and rotates to directly over shield bars B is positioned at, and realizes distance light light shape light illumination mode; When detecting the speed of a motor vehicle by vehicle speed sensor U3, single-chip microcomputer U1 continues 30 seconds (this time can be demarcated) when being higher than 100 kilometers/hour, single-chip microcomputer U1 sends one group of corresponding pulse signal to stepper motor M, stepper motor M drives shading rotating shaft 1 and rotates to directly over shield bars E is positioned at, realize high-speed light shape light illumination mode, high-speed light shape is illuminated the road of farther distance; Continue 90 seconds (this time can be demarcated) and be lower than 60 kilometers/hour and when detecting car UV light brighter (as: the street lighting facility is arranged) when single-chip microcomputer U1 detects the speed of a motor vehicle by vehicle speed sensor U3 by rainfall light sensor U2, single-chip microcomputer U1 sends one group of corresponding pulse signal to stepper motor M, stepper motor M drives shading rotating shaft 1 and rotates to directly over shield bars F is positioned at, realize town road light shape light illumination mode, town road light shape makes the headlamp lighting scope wideer, is beneficial to driver's observation vehicle-surroundings and crossing situation effectively; When single-chip microcomputer detects by rainfall light sensor U2 that rainy and rainfall reaches certain value outside the car, single-chip microcomputer U1 sends one group of corresponding pulse signal to stepper motor M, stepper motor M drives shading rotating shaft 1 and rotates to directly over shield bars C is positioned at, realize rainy day light shape light illumination mode, rainy day light shape illumination can be avoided causing the driver dazzling because of surface gathered water reflection headlamp light;

Claims

1. the car headlamp of light shape more than a kind, it is characterized in that, described headlamp is by bulb (4), speculum (5), shadow shield (2), ellipsoid lens (3), shading rotating shaft (1) and stepper motor (M) are formed, the luminous point of described bulb (4) is positioned on the focus of speculum (5), described ellipsoid lens (3) be fixed in speculum (5) the place ahead and with the same optical axis of speculum (5), described shadow shield (2) is installed between speculum (5) and the ellipsoid lens (3) and is positioned at the below of ellipsoid lens (3) optical axis, described shading rotating shaft (1) level is installed on the top of shadow shield (2) and perpendicular to the optical axis of ellipsoid lens (3), its side is provided with the different axial shield bars of a plurality of width, the output shaft of described stepper motor (M) and coaxial connection of shading rotating shaft (1), its driving signal input connection control circuit.

2. according to the described many light shape of claim 1 car headlamp, it is characterized in that, the control circuit of described stepper motor (M) is by single-chip microcomputer (U1), rainfall light sensor (U2), vehicle speed sensor (U3), headlamp switch (K1) and far and near light dimmer switch (K2) are formed, the signal output part of described rainfall light sensor (U2) and vehicle speed sensor (U3) connects the P0.3 and the P0.4 port of single-chip microcomputer (U1) respectively, a described headlamp switch (K1) and far and near light dimmer switch (K2) termination power positive pole, the other end meets the P0.0 and the P0.1 of single-chip microcomputer (U1) respectively, and the P1.0 port of described single-chip microcomputer (U1) connects the driving signal input of stepper motor (M).

3. according to the described many light shape of claim 2 car headlamp, it is characterized in that, also comprise left and right rudder change-over switch (K3) in the formation of the control circuit of described stepper motor (M), described left and right rudder change-over switch (K3) termination power positive pole, the other end connects the P0.2 port of single-chip microcomputer (U1) respectively.