Special requirements for neon electronic transformers (figure)

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 terms in the following documents become the terms of this standard by reference to 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 Cycle Inspection Counting Sampling Procedures and Tables (Applicable to Inspection of Process Stability)
GB 9149 General requirements and safety requirements for transformers for tubular discharge lamps with no-load output voltage exceeding 1 000 V (GB 19149-2003, IEC 61050; 1991, IDT)

3 definition

3.1 neon tube neon lamp

Low pressure cold cathode glow discharge lamp.

3.2 ne tube neon glow lamp

The lamp is filled with neon tubes of helium. The light emitted by this type of lamp is directly emitted by the xenon glow discharge.

3.3 Mercury argon tube mercury-argon glow lamp

The lamp is filled with neon tubes of 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 same group light

A set 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 tube clear bulb

In the mercury argon tube, the powder tube and the electrode joint (or the sintered portion) are not coated with powder.

3.7 initial characteristics inital characteristics

The characteristics of the lamp through the initial ignition point of 100h.

3.8 life life

The cumulative time that the lamp ignites when it is not working properly.

3. 9 average life average life

In the life test with the number of test samples 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 sum of the life of the N/2th and N/2+1 lamps 1/2 (N is an even number) is called the average life of the batch of lamps.

3.10 illuminance maintenance rate lux maintenance

For the same distance, the ratio of the illuminance of the lamp to the specified time and the initial illuminance value of the lamp is expressed as a percentage.

4 Technical conditions

4. 1 appearance

4.1.1 Glass tubes and phosphor coatings should not have defects that affect the illuminating effect and use.

4.1.2 After the initial ignition 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 be obvious

4.1.4 There shall be no significant difference in the color of the colored lamps in the same group of lamps.

4.1.5 The length of the tube at the tube joint coated with phosphor shall not exceed 5 mm 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 lamp shall comply with the requirements of Table 1.
Table 1 Photoelectric performance parameters of the lamp

Serial number lamp type color starting voltage
(maximum) V lamp voltage V lamp current mA brightness
(minimum) × 103cd / ┫ 1 氖 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. An argon-filled colored glass neon tube with 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 Life of neon tubes

No. Lamp 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 the axial tension of 20 N. The connecting part should be coated with moisture-proof, heat-resistant and durable paint or covered with 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 methods

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 normally and keep the ignition point.

5.7 The test of the glass tube temperature (4.7) at the electrode of the lamp is carried out in accordance with the provisions of Appendix D.

5.8 Lamp temperature sudden change test (4.8) Put the test lamp into the oven, gradually warm up to 100K ± 5K above the water temperature of the sink, and keep the temperature for 15 minutes, then take out the speed from the oven and put it into the sink.

6 Acceptance rules

6.1 Neon tubes must be tested by the manufacturer before they can be shipped. In order to verify the quality of the lamps and the requirements of this standard, the manufacturer shall carry out the delivery test and routine test of the quality of the lamps, according to GB/T2828, GB respectively. /2829 execution.

6.2 The settlement test items and the qualified judgment conditions are shown in Table 3.
Table 3 Settlement test items and qualification conditions

No. Test item Test clause Inspection level Sampling plan Qualified quality level AQL % Technical requirements Test method 1 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

6.3 The test items and the qualified judgment conditions of the routine test shall comply with the provisions of Table 4. If one test item of the test tube does not meet the requirements of Table 4, the routine test is considered unqualified.
Table 4 Routine test items and qualification 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 30 3 [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 The average life expectancy is determined according to the test method specified in 5.3, and then compared with 4.3 to judge whether it is qualified or not.

6.4 If the routine test fails, the batch of lamps shall be unqualified. At this time, the production and acceptance shall be stopped immediately. The accepted products shall be stopped from the factory. At the same time, the cause of the failure shall be studied and effective measures shall be taken until the new case Production and acceptance can only be resumed after passing the test.

6.5 Routine tests shall be conducted at least once a quarter (where the average life test and illumination maintenance rate are not less than once a year). Every time the structure, manufacturing process or material changes of the lamp may affect the performance of the lamp, it shall be routine. test.

6.6 The manufacturer may provide a routine test report to the ordering party.

7 signs, 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.


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