GB 18408-2015 English PDF (GB18408-2015)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get Quotation: Click GB 18408-2015 (Self-service in 1-minute)
Historical versions (Master-website): GB 18408-2015
Preview True-PDF (Reload/Scroll-down if blank)

GB 18408-2015: Photometric characteristics of devices for the illumination of rear registration plates of motor vehicles and their trailers
GB 18408-2015
Photometric characteristics of devices for the illumination of rear registration plates of motor vehicles and their trailers
ICS 43.040.20
T38
National Standards of People's Republic of China
Replacing GB 18408-2001
After the car and trailer license plate illumination device light performance
Issued on. 2015-10-09
2016-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
All the technical contents of this standard is mandatory.
This standard rule according to GB /1.1-2009 given draft.
This standard replaces GB 18408-2001 "after the car and the trailer license plate light illumination device performance," compared with GB 18408-2001
Representing the main changes are as follows.
--- Modify the previous edition Chapter 2, "Normative references";
--- Revised edition before Chapter 3, "Definition and Classification," to Chapter 3, "Terms and Definitions";
--- Revised edition before Chapter 4, "General requirements" to Chapter 5, "requirements";
--- Increase the Chapter 4, "Classification and different types of lighting devices";
--- Remove the previous version Chapter 5, "light performance" related content into this version of Chapter 5, "5.4 light distribution requirements";
--- Remove the previous version in Chapter 6, "light and color", relevant content into this version of Chapter 5, "5.3 light color requirements";
--- Remove the previous version Chapter 7, "on the light bulb provisions," related content into this version of Chapter 5, "5.2 source requirements";
--- Remove the previous version in Chapter 8, "brightness test methods", edition Chapter 6, "test" into the relevant content;
--- Remove the previous version in Chapter 9, "light color testing methods" edition Chapter 6, "test" into the relevant content;
--- Revised edition before Chapter 10, "inspection rules"; instead edition Chapter 7, "Inspection Rules";
--- Increased Chapter 8, "the transition period requirements";
--- Increased requirements for light source module;
--- Increased the use of a light source module devices with optical performance test methods.
The standard proposed by the Ministry of Industry and Information Technology.
This standard by the National Automotive Standardization Technical Committee (SAC/TC114) centralized.
This standard was drafted. Changzhou Xingyu lights Co., Ministry of Public Security Traffic Management Research Institute.
The main drafters of this standard. Zhucai Ping, Huang Limin, Hu Xinwei.
This standard replaces the standards previously issued as follows.
--- GB 18408-2001.
After the car and trailer license plate illumination device light performance
1 Scope
This standard specifies the general license plate lighting device requirements, light requirements, the requirements of light color, light vehicles and their trailers and their performance after test
Methods and inspection rules.
This standard applies only to the car and trailer with license plate illumination device.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 4785 Installation regulations for car and trailer exterior illumination and light signaling devices
GB 15766.1 size bulbs for road vehicles, electrical and luminous requirements
ECER37 Uniform provisions concerning the certification of motor vehicles and their trailers lamps with filament lamps certified (Uniform provides
concerningtheapprovaloffilamentlampsforuseinapprovedlampunitsofpower-drivenvehiclesand
oftheirtrailers)
3 Terms and Definitions
GB 4785, GB 15766.1 defined terms and definitions apply to this document.
Category 4 with different types of illumination device
4.1 Classification of the lighting device
After use in accordance with the license plate illumination device is divided into three categories 1, 2 (see Figure 1).
Millimeters
Illumination region a) Class 1 device is 440mm × 140mm
1 license plate means and all kinds of test points Figure
Millimeters
Illumination region b) Class 2 unit of 440mm × 220mm
Illumination region c) 3 type arrangement of 300mm × 165mm
If a lighting device used for two or more kinds of license plate, according to the position indicated by the manufacturer, by the above related drawings get together
Measurement points required to test, if the distance between two measuring points is less than 30mm, only one of them need to be measured.
Figure 1 (cont.)
Class 1 device illumination area is 440mm × 140mm, type 2 is 440mm × 220mm, 3 classes of 300mm × 165mm.
View of the inner dotted line to the intersection of the center luminance measurement points.
4.2 different types of lighting device
The main difference in the following terms have the rear registration plate illuminating device.
--- Trade name or trademark;
--- Characteristics of the optical system (light intensity level, light distribution angle, the type of filament lamp, light source module, etc.);
--- In light of the incident angle of the license plate.
5 Requirements
5.1 General Requirements
5.1.1 rear registration plate illumination device such that the entire surface of the license plate visible at a given angle in Figure 2.
A viewing angle region and only the license plate and the spatial position of the illumination device related; viewing angle mounted on the vehicle license plate area should also meet the relevant
National standards; viewing angle should be considered to be part of the lighting device shutter should be blocked in the direction of maximum consideration should minimize occluded range.
Visible range of the illumination area 2 in FIG.
5.1.2 lighting device manufacturer should provide one or more lighting devices with respect to the spatial position of the license plate, the installation should be made according to the lighting device
Any point on the surface of the angle of incidence of no more than clear 82 °, the angle of illumination light emitting surface of the device should be, the end furthest from the license plate test
And, if more than one illuminating device, the above requirements apply only to the illumination area of the illumination device involved.
When the illumination device light-emitting surface of the license plate from the farthest edge of the license plate parallel to the edge of this center will be regarded as an illumination device made
Glossy end.
5.1.3 The device shall not direct light emitted backwards, with the exception of red light emitted from the lamp assembly and other composite.
5.2 light requirements
5.2.1 filament lamps shall comply with the requirements of GB 15766.1 or ECER37.
5.2.2 The light source module should be designed to even still be installed in the correct position in the dark.
5.2.3 The light source module shall be tamper-proof.
5.3 light color requirements
Rear registration plate illumination device light color should ensure that no significant changes in the color of the license plate.
5.4 light distribution requirements
5.4.1 Requirements for each measurement point shown in Figure 1, the luminance B of not less than 2.5cd/m2.
5.4.2 brightness illumination area should be uniform, the brightness gradient between any two points should be measured according to formula (1) Requirements.
| (B1-B2) |/L1-2 ≤2 × B0/cm (1)
Where.
B1, B2 --- two measuring points at any brightness, in units of candela per square meter (cd/m2);
Distance L1-2 --- B1 and B2 between centimeters (cm);
B0 --- each measurement point in the minimum brightness, the unit is candela per square meter (cd/m2).
6 Test methods
6.1 laboratory darkroom, plant and equipment
6.1.1 The laboratory darkroom should be no light leakage, which should not affect the environmental conditions of the light beam transmission properties and instrument accuracy.
6.1.2 should be used to measure the brightness of the DC power supply, electrical instrument accuracy is not less than 0.2, luminance meter shall be specified in the national test procedures
Of a luminance meter (which shows the value of error does not exceed 0.25).
6.1.3 should be measured in a measuring brightness) on the surface of a diffuse colorless known diffuse reflection coefficient. Luminance value of the test according to the needs of diffusely
1 shot was corrected. Same colorless diffuse surface size and the size of the license plate or more than one detection point zone size, the center should be placed
Set in the center of the measurement point.
6.1.4 colorless diffuse surface should be placed in a position before the normal position of the license plate and the fixing plate mounted at 2mm.
6.1.5 luminance measurements should be perpendicular to the surface of the diffuse colorless, and the deviation in each direction ≤5 °. Each test point (see Figure 1) with a diameter
25mm circular region representation.
6.2 with light test
6.2.1 bulb filament lamps shall be tested using standard light bulb in their reference luminous flux measured.
6.2.2 If the light source module shall respectively 6.75V, 13.5V or 28.0V measurements.
6.2.3 If the light source is through a dedicated power supply unit, said test voltage power supply unit should be used terminal input voltage.
6.2.4 In addition to the license plate illumination device equipped with filament bulb, the rest no license plate illumination device lights up after 1min and 30min
Brightness measured value shall comply with the minimum value.
6.2.5 lighting luminance value of each test point 1min after that can light up after 1min and bright lights after 30min measured by either
To calculate the ratio of the degree.
6.2.6 for multi-source device equipped with light measurement.
a) For non-replaceable light sources (filament lamps and other), the implementation of the provisions in accordance with 6.2.2 and 6.2.3.
b) For replaceable filament light bulbs, such as 6.75V, 13.5V or 28.0V measured brightness value should be corrected, correction factors
It is the ratio between the average flux and flux benchmark test voltage (6.75V, 13.5V or 28.0V) below. Each bulb Real
Luminous flux and the average deviation of the occasion does not exceed 5%. Or use standard bulbs in each light source position in its reference luminous flux
Under amount detection, the measured values for each position are added together.
1) CIEPublicationNo.17-1970, paragraph45-20-040.
6.3 light color test
6.2.1 to 6.2.3 by means of the power supply, change the color of the license plate after observation.
7 Inspection rules
7.1 Type inspection
7.1.1 Description This lighting device is intended to be a license plate belongs to Class I or Class 2 or Class 3. It shall indicate the spatial relationship between the device and the license plate of any
A lighting device type-approval application materials should contain.
A front license plate illumination device after a) the three drawings, rear license plate illumination device type detailed drawing legible and should have a
Map detail should draw the details of the optical components, including the cross-section.
b) a concise technical specifications, in addition to non-replaceable light source, should require the use of a filament lamp type.
c) two samples, equipped with the license plate and the test device.
7.1.2 Each sample shall comply with the provisions of 5.1 and 5.2.
7.1.3 tested in accordance with the provisions of Chapter 6, each sample shall conform to the corresponding provisions of 5.3 and 5.4.
7.2 Production consistency inspection
7.2.1 Qualified for type testing of products, with a random sample to determine the consistency of its production.
7.2.2 random sample shall conform to the corresponding provisions of 5.1 and 5.2.
7.2.3 conducted in accordance with Chapter 6 of the test, each sample shall conform to the corresponding provisions of 5.4, the brightness is not to be less than 2.0cd/m2, average brightness
Uniformity should meet 5.4.2, formula (1) by a factor of 2 of 3 instead.
8 transitional requirements
Since the implementation of the 8.1 standard, a new application type test vehicle with a rear license plate illumination device shall comply with the standard.
8.2 standard from the date of implementation of 24 months, should not be used in the production models will be produced according to GB 18408-2001 rear license plate illumination
Means.