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national standards of People's Republic of China
National Standard GB19261-2003 of the People's Republic of China General requirements and safety requirements for neon tubes (optional) 1 Scope This standard specifies the definition, main dimensions, basic parameters, technical requirements, test methods and inspection rules for neon tubes. This standard is applicable to neon lamps with an outer diameter of 8mm to 14 mm and filled with helium or mercury-argon mixed gas. 2 Normative references The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. Any dated reference file. All subsequent amendments (not including errata content) or revisions do not apply to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents are available. For undated references, the latest edition applies to this standard. GB/T 2828 batch-by-batch inspection sampling procedure and sampling table (for continuous batch inspection) GB/T 2829 periodic inspection counting sampling procedure and table (for inspection of process stability) GB 9149 no-load output voltage exceeds 1 General requirements and safety requirements for transformers for neon lamps of 000 V (Neon transformers) (GB 19149-2003, IEC 61050; 1991, IDT) 3 Definition 3.1 neon tube neon lamp Low pressure cold cathode glow discharge lamp. 3.2 neon glow lamp neon tube filled with helium. The light emitted by this type of lamp is directly emitted by the xenon glow discharge. 3.3 Mercury-argon glow lamp A neon tube filled with argon and mercury. The light emitted by the lamp is ultraviolet light emitted by mercury atoms during glow discharge, and the phosphor layer coated on the inner wall of the lamp tube is excited to emit visible light or emit visible light through the colored glass. 3.4 Same group light A group of lamps of the same color used in the same project. 3.5 effective length effective length The length of the light-emitting part of the lamp, denoted by L. Unit m. 3.6 Clear bulb In the mercury argon tube, the unbonded part of the junction (or sintering) between the tube and the electrode. 3.7 Initial characteristics initial characteristics Characteristics of the lamp after initial ignition point of 100h. 3,8 Lifetime The cumulative time that the lamp ignites when it is not working properly. 3. 9 average life in the life test of the test sample number N, according to the order of damage of the lamp, the life of the (N +1)/2 lamp (N is an odd number) or the N/2 and N /2 1/2 of the sum of the life of +1 lamps (N is an even number) is called the average life of the lamp. 3.10 Illumination maintenance rate lux maintenance is the ratio of the illuminance of the lamp to the specified time and the initial illuminance value of the lamp at the same distance, expressed as a percentage. 4 Technical conditions 4. 1 Appearance 4.1.1 Glass tube and phosphor coating should not have defects that affect the lighting effect and use. 4.1.2 After the initial ignition point of the lamp, there shall be no obvious oxidized mercury deposits on the pipe wall. 4.1.3 The curved part of the lamp shall not have obvious 4.1.4 The color of the lamp in the same group shall not be obvious. Difference. 4.1.5 The length of the tube at the lamp joint with fluorescent powder shall not exceed 5mm, and shall not be obviously black. 4.1.6 The end of the exhaust pipe of the lamp shall be smooth and shall not have spikes. 4.1 .7 Straight tubular lamps shall not have S-shaped bending, and bow bending shall not exceed 3 mm/m. 4.2 The initial characteristics of the lamps shall comply with the requirements of Table 1. Table 1 Photoelectric performance parameters of the lamps No. Voltage (maximum) V Lamp voltage V Lamp current mA Brightness (minimum value) ×103cd/┫ 1 Tube red 1 100+1 200L 350+470 L～ 500+650 L～ 25 1.5 2 Mercury argon tube green 400 +450 L 300+220 L～ 400+400 L 3.0 3 Blue 1.4 4 White 2.8 5 Yellow 2.8 Note: L is the effective length. The argon-filled colored glass neon tube has a brightness of not less than 50% of the transparent glass tube of the same specification. 4.3 The life and illuminance maintenance rate of the tube shall not be lower than the values ​​specified in Table 2. Table 2 Neon tube life number lamp Tube type average life h illuminance maintenance rate η (flame point to 2000h) % 1 氖 tube ≥ 10000 ≥ 95 2 mercury argon tube ≥ 8000 ≥ 90 4.4 The connection of the lamp lead wire should be firm and should be able to withstand 20 N axial tension. The connecting part should be coated with a moisture-proof, heat-resistant, durable paint or covered with an insulating material. 4.5 The lamp should still start and ignite normally after the vibration test. 4.6 The lamp should be able to start and ignite normally in the high temperature range of -40 ° C ~ 50 ° C. 4.7 The temperature of the glass tube at the electrode of the lamp should be lower than 55 °C. 4.8 The lamp should be able to withstand the 100K temperature sudden change test without damage. 5 Test method 5.1 Appearance quality of the lamp (4.1) Check or measure by visual inspection or vernier caliper. 5.2 The initial characteristics of the lamp (4.2) are measured in accordance with the provisions of Appendix A and Appendix B. 5.3 Lamp life and illuminance maintenance rate (4.3) Test methods specified in Appendix C and Appendix B. 5.4 The connection fastness of the lamp lead-out line (4.4) is checked with a dynamometer with an error of not more than 0.1 N. The moisture-proof cover is visually inspected. 5.5 Vibration resistance of the lamp (4.5) The test is to fix the lamp rigidly on the vibrating table. The vibration frequency of the vibrating table should be 1 Hz~30 HZ, 2 mm amplitude, 5 min vertical vibration, and the input end is added. Check the starting voltage and check if the lamp is normally ignited. 5.6 The temperature range (4.6) of the normal operation of the lamp is to separate the lamp in the environment of -40 ° C and +50 ° C for 2 h, respectively, and check the lamp under low temperature and high temperature environment, under the specified starting voltage. Whether it can start and maintain the ignition point normally. 5.7 The test of the glass tube temperature (4.7) at the electrode of the lamp tube is carried out according to the provisions of Appendix D. 5.8 The temperature change test of the lamp tube (4.8) Put the test tube into the oven and gradually Warm up to 100K ± 5K above the water temperature of the water tank, and keep the temperature for 15 minutes, then take out the speed from the oven and put it into the water tank. 6 Acceptance rule 6.1 The neon tube must pass the manufacturer's inspection before it can be shipped. In order to check whether the quality of the lamp is And the requirements of this standard, the manufacturer should carry out the delivery test and routine test of the quality of the lamp, respectively, according to GB/T2828, GB/2829. 6.2 Settlement test items and qualified judgment conditions are shown in Table 3. Table 3 Settlement test items and qualified judgment conditions No. Test items Test items Inspection level Sampling plan Qualified quality level AQL % Technical requirements Test method Appearance 4.1 5.1 Special inspection level S-3 Once 6.5 2 Firmness 4.4 5.4 4.0 3 Starting voltage 4.2 5.2 4 Lamp voltage 5 Brightness 63 The test items and qualification conditions of the routine test shall comply with the requirements of Table 4. If there is a test item in the test tube, the test item does not meet the table. For the provisions of 4, the routine test is considered unqualified. Table 4 Routine test items and qualified judgment conditions No. Test item Test clause Unqualified quality level RQL % Sample size judgment array Technical requirements Test condition 1 Vibration resistance 4.5 5.5 [0.1] 2 High and low temperature test 4.6 5.6 3 Electrode glass temperature 4.7 5.7 4 Temperature difference sudden change test 4.8 5.8 5 Illuminance maintenance rate 4.3 5.3 6 Average life AA Determine the average life expectancy according to the test method specified in 5.3, and then compare with 4.3 to judge whether it is qualified or not. 6.4 If the routine test fails, the batch of lamps will be unqualified. At this time, production and acceptance should be stopped immediately, and the accepted products should be stopped. The reasons for the non-conformity should be studied and effective measures should be taken until the new routine test is passed before the production and acceptance can be resumed. 6.5 Routine tests are not less than once a quarter (where the average life test and illuminance maintenance rate are not Less than one time. Every time the structure, manufacturing process or material changes of the lamp may affect the performance of the lamp, routine tests shall be carried out. 6.6 The manufacturer may provide routine test reports to the ordering party. 7 Marking, packaging, transportation 7.1 The manufacturer shall attach a quality inspection certificate to each group of neon tubes delivered for use. The manufacturer's name shall be clearly indicated on the certificate; the product type; the manufacturing year, month and product standard number. 7.2 Packaging transportation is mutually agreed between the manufacturer and the user.