This standard specifies the photometric performance, test methods and inspection rules of the front position lamps, rear position lamps, clearance lamps and brake lamps of automobiles. This standard applies to various types of front position lamps, rear position lamps, clearance lamps and brake lamps used on M, N and O class automobiles and trailers. GB 5920-1999 Photometric performance of front position lamps, rear position lamps, clearance lamps and brake lamps of automobiles and trailers GB5920-1999 Standard download decompression password: www.bzxz.net

GB5920--1999
The performance indicators of this standard are equivalent to the Annex 6 of the United Nations Economic Commission for Europe (ECE) "Agreement on the adoption of uniform certification conditions and mutual recognition of certification for motor vehicle equipment and components": Amendment 1 of the revised version of Regulation No. 7, including Supplement 2 of the 02 series amendments implemented on January 26, 1994 (E/ECE/324, E/ECE/TRANS/505, March 4, 1994). The main differences between this standard and the previous version (GB5920-1994) are as follows: a. The photoelectric performance parameters of various types of bulbs have been deleted, and it is only stipulated that bulb replacement devices should use bulbs that comply with the provisions of GB15766.1. b. The relevant provisions of S3 brake lights have been added. c. The requirements for light distribution performance have been added for single lamps marked with "D" (which can be used as single lamps or as dual lamp components) and dual lamps.
d. The corresponding provisions for non-replaceable light source devices and multi-light source devices have been added. This standard shall replace GB 5920-1994 from the date of implementation. This standard was proposed by the State Machinery Industry Bureau. This standard is under the jurisdiction of the National Automobile Standardization Technical Committee. This standard was drafted by the Shanghai Automobile Lighting Research Institute. The main drafters of this standard are Zhou Guoping and Pu Xiaojun. This standard was first issued in March 1986.
National Standard of the People's Republic of China
Photometric characteristics of front and rear position lamps, end-outline marker lamps and stop lamps for motor vehicles and their trailers
Photometric characteristics of front and rear position lamps, end-outline marker lamps and stop lamps for motor vehicles and their trailersGB 5920-1999
Replaces GB5920-1994
This standard specifies the photometric characteristics, test methods and inspection rules of front and rear position lamps, end-outline marker lamps and stop lamps for motor vehicles. This standard applies to various types of front position lamps, rear position lamps, clearance lamps and brake lamps used in M, N and O category vehicles and trailers. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB4599--1994 Photometric performance of automobile headlamps GB-4785--1998 Installation regulations for external lighting and signal devices of automobiles and trailers GB15766.1-1995 Requirements for the size and photoelectric performance of road motor vehicle bulbs 3 Definitions
This standard adopts the following definitions.
3.1 Front position lamp
A lamp that indicates the presence and width of the vehicle when viewed from the front of the vehicle. 3.2 Rear position lamp
A lamp that indicates the presence and width of the vehicle when viewed from the rear of the vehicle. 3.3 Clearance lamps
Lamps installed at the outermost edge of the vehicle and as close to the top as possible to indicate the width of the vehicle; for some vehicles and trailers, they are used to supplement the front position lamps and rear position lamps to draw special attention to the whole. 3.4 Brake lamps
Lamps that indicate to other road users behind the vehicle that the vehicle is braking. Brake lamps can be illuminated by a retarder or similar device. 3.5 Device
An assembly of lighting or signaling devices consisting of a light source (in some cases, an optical system), a light-transmitting surface and a lamp body. The device may consist of one or more lamps. If it consists of more than one lamp, it may be: 3.5.1 Independent lamp
A lamp with separate light-emitting surfaces, separate light sources and lamp body; 3.5.2 Combined lamp
A lamp with separate light-emitting surfaces, separate light sources and a common lamp body; Approved by the State Administration of Quality and Technical Supervision on September 17, 1999 188
Implementation on July 1, 2000
3.5.3 Composite lamp
GB 5920 -- 1999
A lamp with separate light sources or a single light source working under different conditions, and a light-emitting surface and a lamp body that are fully or partially shared. 3.6 Single lamp
Refers to a device or a component of a device, which has one function, one light-emitting surface in the direction of its base axis, and one or more light sources. For its installation on the vehicle, a single lamp also refers to an assembly consisting of two independent lamps or combination lamps, which, whether identical or not, have the same function and whose apparent surface projection on the reference axis after installation is not less than 60% of the minimum rectangular area enclosed by the apparent surface in the direction of the above-mentioned reference axis. In the above case, when each lamp marked with "D" in such a single lamp requires certification, it shall be certified as a "D" type lamp. Note: For devices that can be used as both a single lamp and as a component of a dual lamp, the letter "D" shall be marked to the right of the additional symbol of its certification mark. 4 Technical requirements
4.1 General provisions
4.1.1 Front position lamps, rear position lamps, clearance lamps and brake lamps shall be designed and manufactured to ensure that they meet the use requirements and comply with the photometric performance requirements of 4.3 of this standard under normal use conditions even if they are subject to vibration. 4.1.2 Front position lamps and rear position lamps can be combined into combination lamps, compound lamps and hybrid lamps, and can also be used as clearance lamps. 4.1.3 The light color and chromaticity characteristics of front position lamps, rear position lamps, clearance lamps and brake lamps shall comply with the provisions of GB4785. 4.2 Provisions on light sources
4.2.1 Replaceable lamps shall use lamps that comply with the provisions of GB15766.1 4.2.2 The nominal voltage of non-replaceable light source devices is 12V or 24V, and their photoelectric parameters are agreed upon by the manufacturer and the user. 4.3 Light distribution performance
The luminous intensity of the front position lamp, rear position lamp, clearance lamp and brake lamp in the direction of the reference axis shall comply with the provisions of Table 1. 4.3.1bzxz.net
Table 1. Luminous intensity of the front position lamp, rear position lamp, clearance lamp and brake lamp in the direction of the reference axis Luminous intensity
Front position lamp, front corridor lamp
Front position lamp combined with headlamp
Rear position lamp, rear corridor lamp
One luminous intensity level (S1 category)
Two luminous intensity levels (S2
Brake lamp
S3 category brake lamp
Minimum value
Single lamp marked with "D\
1)The maximum value of the single lamp multiplied by 1.4 gives the total value of the maximum luminous intensity of the two lamps. When two lamps with the same function (whether the same or not) are combined into one device, if the projection of the luminous surface of each lamp on a plane perpendicular to the longitudinal symmetry plane of the vehicle is not less than 60% of its minimum circumscribed rectangle, the device should be regarded as a single lamp for vehicle installation. For a single lamp with multiple light sources:
When any one of the light sources fails, the minimum luminous intensity value requirements should still be met. When all light sources are on, the maximum luminous intensity of a single lamp not marked with "D\" may exceed the specified value for a single lamp, but shall not exceed the specified value for a double lamp. 5920—1999
4.3.2 The minimum geometric visibility angle of front position lamps, rear position lamps, clearance lamps and brake lamps shall comply with the provisions of GB4785, and within the minimum geometric visibility angle range, the luminous intensity shall comply with the following provisions: 4.3.2.1 In each measuring direction shown in Figures 1 and 2, the luminous intensity shall not be less than the product of the percentage in each measuring direction and the minimum luminous intensity value specified in Table 1.
Note: The degrees in the figure are the horizontal angle with the hh line and the vertical angle with the - line. 20
Figure 1 Light distribution of front position lamps, rear position lamps, clearance lamps and brake lamps (except S3) 10°
Figure 2 Light distribution of S3 brake lamps
4.3.2.2 The luminous intensity in any visible direction shall not exceed the maximum value specified in Table 1. 4.3.2.3 For For rear position lamps mixed with brake lamps, the luminous intensity is allowed to be 60cd at and below the horizontal plane 5° downward from the horizontal. 4.3.2.4 In any visible direction, the luminous intensity of the front position lamp, rear position lamp and corridor lamp shall not be less than 0.05cd. 4.3.2.5 In any visible direction, the luminous intensity of the brake lamp with one luminous intensity level shall not be less than 0.3cd. The luminous intensity of the brake lamp with two luminous intensity levels shall not be less than 0.3cd for daytime use and not less than 0.07cd for night use. 4.3.2.6 For rear position lamps mixed with brake lamps, the ratio of the luminous intensity measured within the range of 5° above and below and 10° to the left and right of the horizontal when both lamps are lit and the rear position lamp is lit alone shall be at least 5:1. If the brake lamp has two luminous intensity levels, this requirement must be met under night conditions.
4.3.2.7 Within the range shown in the figure above, the luminous intensity distribution should be uniform, that is, the luminous intensity in any measurement direction within the range should not be lower than the minimum value of the specified test point in the grid where the measurement direction is located. 190
5 Test method
GB59201999
5.1 The test darkroom, devices and equipment should comply with the provisions of GB4599. 5.2 Voltage or luminous flux during photometric measurement
5.2.1 For non-replaceable light source lamps, the measurement should be carried out at a voltage of 13.5V or 28.0V. 5.2.2 For bulb-replaceable devices, the corresponding standard bulbs should be used and the measurement should be carried out at the reference luminous flux specified in GB15766.1. 5.3 Before the photometric test, the bulb should be ignited at the voltage during the test so that its light performance tends to be stable. 5.4 The distance of the photometric test should ensure that the inverse square law of photometric distance can be applied. 5.5 The test equipment shall ensure that the detector angle is between 10' and 1° when observed from the reference center of the luminaire. 5.6 The luminous intensity in any measurement direction in the diagram shall ensure that its angular deviation is no more than 15'. 5.7 The measurement of the measuring angle is based on the reference axis (indicated by the manufacturing drawing). 5.8 Photometric measurement of luminaires with several light sources 5.8.1 For non-replaceable light sources or other light sources: If necessary, the manufacturer shall provide the special power supply required for such light sources and measure at the voltage specified by the manufacturer. 5.8.2 For light sources using replaceable bulbs: When the luminaire is equipped with mass-produced bulbs, its luminous intensity at 13.5V or 28.0V shall be between the minimum or maximum values ​​specified in this standard and corrected according to the luminous flux deviation of the selected type of bulb. Alternatively, standard bulbs may be used in turn at each bulb position, measured at the specified reference luminous flux and accumulated. 5.9 Chromaticity measurement shall use a light source with a color temperature of 2856K (equivalent to International Commission on Illumination A light source). For lamps using non-replaceable light sources, the measurement should be carried out at a voltage of 13.5V or 28.0V. 6 Inspection rules
6.1 Determination of different types of front position lamps, rear position lamps, clearance lamps and brake lamps If there are differences in the following main aspects, they are considered to be different types; 6.1.1 Trade name or trademark;
6.1.2 Characteristics of the optical system (luminous intensity level, etc.); 6.1.3 Type of bulb or light source used;
6.1.4 For brake lamps with two luminous intensity levels, the system used to reduce the intensity of light at night; 6.1.5 Structure and shape of the device.
6.2 Front position lamps, rear position lamps, clearance lamps and brake lamps applying for certification shall be subject to type inspection and product consistency inspection. The light distribution performance inspection of bulb-replaceable devices shall use standard bulbs. In case of objections, it is allowed to replace standard bulbs and retest. The bulbs used in the devices in this standard shall be certified products. Before the bulbs are certified, they shall be products confirmed by special testing agencies designated by relevant national authorities.
6.2.1 Type inspection
The determination of the same type of devices involved in this standard shall be in accordance with the provisions of 6.1 of this standard. 6.2.1.1 For products applying for certification, the manufacturer shall provide: a) three copies of drawings sufficient to identify the characteristics of the type of lamp, including the detailed characteristic structure of the light distribution mirror, and indicating the reference axis (H-0°, V=0°), the reference center and the geometric position installed on the vehicle; b) 2 sample lamps (the bulb replacement device includes the bulb). 6.2.1.2 Each sample lamp shall comply with the provisions of 4.1 and 4.2 of this standard. 6.2.1.3 Tested according to the test method of Article 5 of this standard, each sample lamp shall comply with the provisions of 4.3 and 4.1.3 of this standard. 6.2.2 Product consistency inspection
6.2.2.1 For products that have passed the type inspection, the consistency of the product shall be determined by randomly selected sample lamps. 191
GB59201999
6.2.2.2 The test shall be carried out according to the test method in Section 5 of this standard. The randomly selected sample lamps shall comply with the provisions of Sections 4.3 and 4.1.3 of this standard, but the minimum value shall be relaxed to 80% of the specified value.
6.2.2.3 The sampling plan and judgment rules shall be agreed upon by the manufacturer and the user. 192
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