provide additional illumination angle of light near the corner of the road ahead of the vehicle or to provide supplemental illumination for the lighting or the back side of the vehicle. Corner lights on the road when ambient lighting conditions are not sufficient, auxiliary lighting play a role in providing a guarantee for traffic safety. This lamp especially for road ambient lighting conditions inadequate area lighting play a secondary role.
1. Cornering lamp classification and action
There are two car horn lamp.
A method for providing supplemental illumination to the near corner of the road ahead of the vehicle is about to turn lamps, installed at both sides of the longitudinal plane of symmetry of the vehicle, domestic and international standards and regulations such angular lamps are: Chinese standard GB / T 30511-2014 “car horn lamp light distribution performance,” EU regulations ECE R119 “uniform provisions concerning the auto corner lights certified”, Society of automotive engineers regulations SAE J852 “motor vehicle with a front lamp.”
Another vehicle is about to reverse or slow row, is to provide auxiliary lighting lamps or rear side of the vehicle, mounted on a vehicle side, rear or down installation. This corner lamp has domestic and international standards and regulations: ECE R23 “Uniform provisions concerning motor vehicles and trailers reversing lights authentication”, SAE J1373 “vehicle length less than 9.1 m after the vehicle cornering lamp”, will be referred to as ECE R23 which cornering lamp lights slow.
2. Compare angle of performance specifications
cornering lamp for automobiles require various different standards, are connected to the diagonal of the lamp a light distribution performance of the standards and regulations circuits compare differences and other related provisions.
of the light distribution properties
GB / T 30511-2014 comparison with the light distribution properties are shown in Table 1 ECE R119, the light distribution angle of a light measurement screen light distribution of FIG measurement screen shown in Figure 1, corresponding to FIG. 1 to be mounted For a vehicle left corner lamp (lamp mounted on the right angle when the vehicle, will replace L R), the geometrical visibility angles shown in Figure 2.
By comparison: two of the three standard key 2.5D-30L, 2.5D-45L, 2.5D-60L and the minimum geometric requirements of the visible light distribution of light intensity within the range of the minimum value is the same, the light distribution in the light distribution area GB / T 30511-2014 dark region on the basis of the requirements of the ECE R119 made some changes, and the requirements of the light distribution of the bright area below the required ECE R119 measured from the light distribution properties uniform requirement.
of the light distribution performance requirements of SAE J852 are shown in Table 2. Table 2 corresponding to the mounting angle of the lamp in FIG. 2 and the left side of the vehicle cornering lamp geometrical visibility angles made (if the angle of the right side of the vehicle lamp is mounted, will be replaced by L R), positioning the test points shown in Figure 3.
by ECER119 and GB / T 30511-2014 Contrast: SAE J852 in the three key points 2.5D-30R, 2.5D-45R, 2.5D-60R is higher than the minimum requirements of the optical requirements of ECE R119 and GB / T 30511-2014, and in the light distribution SAE J852 dark light distribution area ratio requirements ECE R119 and GB / T 30511-2014 more specifically and in detail, the maximum light intensity of the bright area is unspecified, the distance measuring light distribution property required area of not less than 3 m.
ECE R23 in slow running lamp light distribution performance requirements in Table 3.
SAE J1373 performance requirements of the light distribution shown in Table 4, Table 4 corresponds to the left lamp mounted on the vehicle in terms of angle (angle when the vehicle lamp is mounted on the right side, will be replaced by L R).
Table 1 GB / T 305511-2014 and ECE R119 light distribution performance GB / T 30511-2014ECE R1192.5D-30L: minimum 240 cd2.5D-30L: minimum 240 cd2.5D-45L: Min 400 cd2.5D-45L: minimum 400 cd2.5D-60L: minimum 240 cd2.5D-60L: 240 cd all directions on the minimum
direction by the horizontal line HH all the reference axis direction than 1.0U the light intensity 300 cd maximum limit which limits the maximum intensity 300 cd
0.57D left and right limit of the maximum intensity line 600 cd
the maximum value of light intensity by the horizontal plane of the reference axis 600 cd0.57D the limit of the maximum intensity in all directions 10 000 cd0.57D less, which intensity maximum limit 14 000 cd geometry of the visible range, the light intensity is minimum value within the range of 1.0 cd geometrical visibility, the light the minimum value intensity measured is 1.0 cd light distribution performance measurement distance, the distance measurement can be applied shall ensure that the optical performance of photometric inverse square law with distance, should ensure that the square of the distance can be applied in the reciprocity law photometry
tABLE 2 the light distribution performance requirements of SAE J852 test area or test point standard 10U ~ 90U-45L ~ 85R maximum 125 cd4U-45L ~ 85R maximum Value 200 cd
2U-45L ~ 85R maximum 300 cd1U-45L ~ 85R maximum 400 cdH-90L ~ 85R maximum 500 cd2.5D-30R minimum 300 cd2.5D-45R smallest minimum 500 cd2.5D-60R value of 300 cd light distribution performance measurement distance ≥3 m
Note: (1) allows any test point ± 1/4 ° deviation. Allowing 2 ° taper angle in the range of 10U ~ 90U-45L ~ 85R reaches the maximum test area 500 cd.
Table 3 ECE R23 in slow running lamp light distribution performance requirements of standard test area or test point requirements of any visible direction of the light intensity distribution performance measurement light 500 cd maximum distance ≥3 m
Note: ECE R23 in slow light test points or test area: the minimum vertical angle min = arctg (1- mounting height) / 10, the installation height of the unit is m, the maximum vertical angle miax = min + 11.3; horizontal angle: by the reference axis and perpendicular to the vehicle longitudinal plane, range: -90 ° ~ + 90 °. At this time, the standard is: directly to the side, front and rear light intensity is not more than 0.5 cd.
Table 4 SAE J1373 performance of the light distribution of the test area or test pad is required standard 2-1 / 2D-30L minimum 30 cd2-1 / 2D-45L minimum 60 cd2-1 / 2D-60L minimum of 30 cd by measuring the distance and above the level of intensity of the light distribution properties of the reference axis of maximum 600 cd ≥3 m
GB / T 30511-2014, ECE R23 and ECE R119 are not equipped with all three test points filament lamp of FIG. positioning bubbles are measured. 1 min and 30 min requirements. 1 min after lighting the light intensity of each spot to be illuminated by the lighting. 1 min and 30 min under HV point (ECE R119 may also 2.5D the ratio of light intensity on the illuminated point -45L) min 30 intensity measurements obtained by multiplying each point. The SAE J852 and SAE J1373 is no corresponding provision in this regard.
light and color chromaticity characteristics
GB / T 30511-2014, ECE R119, ECE R23, SAEJ1373 SAE J852, and the color of the light the lamp 4 corners of chromaticity diagram is shown in Table 5 requirements.
By contrast: ECE R119 and GB / T 30511-2014 angle of the light color of the lamp requirements are white, SAE J1373 requirements for color light mounted on the rear angle of the vehicle lamp is white, SAE J852 in mounting in front of the vehicle cornering lamp light color requires a number of options, may be white, yellow (amber), the selectivity between these three boundaries yellow or light-color coordinates region enclosed by a dotted line, Figure 4 chromaticity diagram.
Table 5 light color standard angle of the lamp light color in claim GB / T 30511-2014 white ECE R23 ECE R119 White White White SAE J1373
Note: SAE J852 standard of its light color: white to yellow (may be white or yellow (amber) or alternatively a region between the boundaries of the yellow or enclosed by a dotted line above three color light chromaticity coordinates, chromaticity diagram shown in Figure 4).
Optical properties
GB / T 30511-2014 requirements If filament lamp, the lamp shall meet the requirements of ECE R37 or GB 15766.1, ECER119 and ECE R23 requirements If a filament lamp, the bulb should meet ECE R37 regulations. Further ECE R23 and ECE R119 adds the requirement of the LED light source, if the LED light source, the LED light sources should meet the requirements of ECE R128. And SAE J1373 and SAE J852 requirements for the unspecified optical properties.
connection circuit
ECE R48, GB / T 30511-2014 and SAE J852 requirements should be high beam or low beam light allows the angle opens when the lamp is opened; the angular side of the vehicle lamp, vehicle only when the turn signal on the same side or the open side of the same steering angle change only allow the automatic opening from the vehicle to the straight position; when the turn signal is off and / or the steering angle has returned to the straight position, corner lights should be turned off automatically.
Further increases in ECE R48 requirements: when the reversing light is opened, the lamp can open angle, and the steering wheel and independently from the signal, down lights offWhen the lights should be closed at the same angle. ECE R48 and GB / T 30511-2014 requirements when the vehicle speed exceeds 40 km / h, the angle should not be opened lamp; SAE J852 requirements increase the vehicle at high speed (changing lanes) or stops, corner lights should be switched off, to avoid other road users caused discomfort. When ECE R48 requirements should be lit at the same slow light high beam or low beam light on, any of the following conditions, to allow slow lights automatically turn on until the vehicle speed reaches 10 km / h when the vehicle is traveling slowly. After the
(a) to manually start the engine (propulsion systems), before the first time the vehicle is started, or
(b) when reverse gear is engaged state, or the
(c) for assisting a parking operation system of the camera is on. After
When the preceding vehicle speed is greater than 10 km / h, slowly lamp should be automatically closed until opened again before the above-described conditions are satisfied. SAE J1373 requirements only when reverse gear is engaged state, and the engine is in the ignition switch when the engine operating state, is mounted in the rear opening of the vehicle cornering lamp can be otherwise closed.
E-tag and SAE marking
through E-tag ECE certification angle of the lamp is K, slow lamp E mark ML; by SAE authentication mounted SAE labeled front of the vehicle cornering lamp is K, the installation angle in the SAE or the rear side of the vehicle the lamp is labeled K2.
3. Test the light distribution angle of light
In the usual tests a light distribution angle of light often encountered with mixing the angle of F3 front fog lights, corner lights and such front of F3 fogThe lamp has a single light source operating at different conditions, a total light-emitting surface and a common lamp body.
In the light distribution tests will encounter two cases, the first case is consistent with its reference axis of the light source reference axis angle of F3 and front fog lamp, the light distribution in the laser alignment turntable after the lamp reference axis of the sighting light source, the light distribution turret same position for subsequent testing with light; the second case the lamp reference axis thereof relative to the reference light source angularly offset axially inward or upward offset constant angle, FIG. 6, or the angle of F3 front fog lamp geometry are visible while the angle of angularly offset inwardly and upwardly, the alignment of the laser light source lamp in a light distribution in this case the reference axis sighting turret with light turret angular position should be changed as appropriate fixture drawings.