Used to measure product quality is the product standard, for product standards, people of insight are called technical law. I. The composition of the product standard system LED is a new lighting appliance product. LED products include its own, supporting control devices and lighting products that use it as a light source. The standard clauses related to these products are mainly composed of the following aspects. 1. Terms related to people's life and property safety in use of the product As an electrical product, the safety requirements in use are the most important part recognized internationally. In this regard, almost all of our product standards are equivalent to IEC standards. Even if it is our own safety standard, we basically refer to IEC standards and/or Or ANSI and other standards, and are promulgated and implemented as mandatory standards. For example, GB19510/IEC61347 lamp control device series and GB7000/IEC60598 lamp series standards and most of the provisions of the light source safety standards fall into this category. 2. Performance requirements of the LED, the control device and the lamp itself The actual purchase of a product by a consumer is a function of the use of the purchased product, and the use of the product is based on the assessment of performance terms in this area. The LED products used for lighting and corresponding accessory products are no exception. The newly formulated (approved draft) "Performance Requirements for LED Modules for General Lighting", "Performance Requirements for Self-Balancing LED Lamps for General Lighting" and "DC Modules for LED Modules" In the performance requirements of AC electronic control devices, the indicators such as luminous efficiency, color characteristics, light failure, lifetime, and energy efficiency, as well as the distribution luminosity and efficiency index of the lamps and lanterns embody this requirement. 3, LED, control devices and lamps meet the requirements of mutual cooperation This part of the standard can be divided into: (1) Design requirements for light source control devices The lamp control device serves the light source. It should be said that the safety indicators of lamp control devices are the most important, but most of their assessment requirements are the same as those of other electric appliances, and therefore they are easier to understand. As compared with the requirements of the light source, its internal mechanism is relatively esoteric, and the normal working state of the light source is mainly provided by the control device. The matching performance of the control device and the light source is directly related to the luminous efficiency and luminous stability of the light source. And service life, and affect the overall energy efficiency of the system. (2) Design requirements for light sources After the light source is installed in the lamp, its working condition depends on the design structure of the lamp. If the lamp's design structure is unreasonable, it will also seriously affect the normal operation and service life of the light source. For example, road lamps using LEDs require not only a good seal of the lamp to ensure dustproof and waterproof functions, but also a good heat dissipation function to ensure that the LED's junction temperature is still at a reasonable level under many adverse conditions. . 4, assessment of the power of the work of lighting appliances As an electrical appliance, it must comply with the assessment requirements of the power supply in order to ensure the normal operation of the power supply system and maintain a high power supply efficiency. The assessment terms in this area include GB17625, 1/IEC61000-3-2 line power factor, supply current harmonics, and voltage drop and flicker of GB17625, 2/IEC61000-3-3. 5. Electromagnetic interference restrictions on the outside world and resistance to external electromagnetic interference As electrical appliances, electromagnetic interference (EMI) on other electrical appliances should be limited, such as power terminal interference and radiation disturbance in GB17743/CISPR15, and it must be able to resist all possible electromagnetic interference (EMS), such as IEC61547, FCC, etc. In terms of resistance to various electromagnetic interference. Second, lighting LED and its final product should Use standard identification and introduction From the related contents introduced above, we can know that for any product, it is generally not a single standard that can completely cover all assessment requirements. Any product standard is for a certain aspect of the corresponding product, and applies to certain The range. Generally, multiple standards complement each other, cite, and support each other to form a complete standard system. This is the current practice adopted by various standards systems in the world. 1. Standards for LED lighting fixtures and final application products Due to the separation of the industries left behind by China's planned economy and the narrow knowledge of many lighting industry practitioners, we often hear people say that "LED lighting fixtures and final application products do not have current assessment standards." In fact, this argument is Very naive. For example, various final application products using LEDs as a light source do not have any changes in the functions and product attributes of the lamps or self-ballasted lamps that they constitute. Therefore, the current standard requirements of the lamps and lanterns almost cover their assessment contents. At present, all kinds of lamps and lanterns using LED light sources must meet the safety standards, electromagnetic compatibility requirements and light distribution requirements of the lamps. In addition, the assessment criteria for on-site lighting effects of this type of lighting are also fully suitable for such lighting. In other words, the assessment requirements for lighting products using LEDs as light sources (which are also terminal products for applications) have long existed. However, there are still many practitioners in our industry who do not recognize it. 2, LED control device product standards In terms of LED control devices, internationally, the IEC61347-2-13 safety standard requirements and ICE62384 performance requirements have been met internationally in the previous year. China's corresponding national standards have been submitted for approval this year. These two standards and the reference GB19510, 1/IEC61347-1 standard and China's corresponding EMC standards have formed a complete assessment requirements for lighting LED control devices. In addition, in the GB/TXXXX/ICE62384 LED module control device performance requirements standard (approved draft), also increased the LED control device energy efficiency assessment requirements. The implementation of these standards can effectively control the current status of low-efficiency current-limiting current limitations in LED current limiting and the existence of unsafe hidden dangers. Even for some control devices that do not limit the flow of LEDs and stabilize the flow, they only have the function of adjusting the function of each group of LEDs to change light, discolor, and light and dark, and they already have GB19510, 12/IEC61347-2-11. Special requirements for miscellaneous electronic circuits used in conjunction with luminaires" assessment criteria. It should be said that the already-accepted and soon-to-be-announced standards for the evaluation of lighting LED and module control devices have been well established. 3. Standards for LED and its module products for lighting For lighting LEDs and their modules, the product standards in this area are emerging and need to continuously improve. This year, China has formulated the "Safety Requirements for Self-Balancing LED Lights Above 50 V for General Lighting" and "Performance Requirements for Self-Balancing LED Lamps for General Lighting". This product is used independently and has a higher correlation with other accessory products. With its small features, its standards are relatively complete. Coupled with the applicable EMC assessment standards, has basically become a complete assessment system. For lighting LEDs and their LED modules, the five standards developed this year, “General Terms and Definitions for LED and LED Modules for General Lightingâ€, “Test Methods for LED Modules for General Lightingâ€, “Safety Requirements for LED Modules for General Lighting,†and “General Performance Requirements for LED Modules for Lighting, and Industry Standards "Performance Requirements for Light-Emitting Diodes for General Lighting" (has become a draft for approval). The five standards formulated this year have greatly improved the assessment requirements for the finished products. It should be said that when these lighting LED standards reported this year were promulgated, China’s standard system for lighting LEDs and their final products has been Basic formation. Third, the existing general LED lighting and its final product standard defects According to the contents of the first part of the product standard system components in the first part of this article, to review the current (and forthcoming) standards of the second part of this article and the content of these standards, it can be found that there are obvious defects in some product standards that use LEDs as a light source. The performance in the following aspects: 1, as a lighting source, because of its own particularity, must meet the coordination requirements of the control device to work with it, for example: in the fluorescent lamp performance standards and HID light source standards for each The specifications of the lamps all give the “ballast design requirementsâ€, which can make the control device provide a normal work for the light source during use, exert its specialty, and ensure the suitable conditions for the service life of the light source. There is no such requirement in the performance standards for lighting LEDs. 2, as a light source, are generally installed in lamps or similar devices can be used as a commodity sold to consumers, due to the particularity of the work of the light source, but also to the lighting requirements. For example, in the standards of fluorescent lamps and HID lamps, “luminaire design requirements†will be given. It is required that when designing lamps and lanterns, attention should be paid to meeting the corresponding requirements put forward by the light source and providing a good working condition for the work of the light source so that the light source can be utilized. Can guarantee the service life of the light source in the lamp. However, there is no such part in the related standards for lighting LEDs that have been submitted for approval. 3, lamps and lanterns belong to durable consumer goods, so in the safety requirements of lamps and lanterns, the durability test project requires that after the light source abnormal state test and replace the light source, the lamps and lanterns can still work normally, in the heat test, to measure the internal electronic components And the temperature of the component, in the continuous work to achieve thermal equilibrium, the surface temperature exceeds the tc value. The junction temperature of the LED light source during operation is an important parameter related to the light efficiency and service life, but there are currently no relevant requirements for measurement and limitation in the luminaire standards. The above three points are the most important link for lighting LEDs into the general lighting field. They play a vital role in the light source products and the final lighting products. However, at present, there is a clear disconnect between this industry in China. The main reasons are two aspects. First, the LED and its module manufacturers have not conducted serious verification on the mass-produced products, and failed to provide the corresponding product for each type of product under typical working conditions. The corresponding curve of Vf-junction temperature and the corresponding curve of light effect-junction temperature also do not provide the temperature limit value of the reference point measured by the LED light source under the typical working condition. Another reason is that the vast majority of lighting manufacturing companies do not fully understand and realize that, as a light source, in addition to satisfying general safety requirements, light efficiency requirements, and EMC requirements, LEDs used as light sources must also ensure that the LED When all kinds of the most unfavorable conditions occur, it is still necessary to ensure its good working conditions, so that the characteristics of long-life LED can be fully exerted. Fourth, efforts and prospects In the process of formulating relevant standards for general lighting LEDs that had been submitted for approval in 2008, a few people of insight in the country have considered the above problems, but suffer from the lack of sufficient verification data and relevant information, so they cannot rush to include this part of the content. Writing into these standards, only the industry-standard “Light Emitting Diode Performance Requirements for General Lighting,†presents a comparatively crude light efficiency-junction temperature characteristic curve and reference thermal resistance measurement method. This explains, on the other hand, the inadequacy of these standards for this year's approval of LEDs as general lighting sources and the features that will need to be revised in the near future. At the Olympic Games in the previous year, the advantages of LED products for lighting in the field of landscape decorative lighting and display lighting have been fully demonstrated. However, as professional and technical personnel in this field, one should be clearly aware that LED enters the field of general lighting. There are still many difficulties that need to be overcome on the road, including: 1. As a responsible manufacturer of lighting LEDs and their modules, in addition to improving the LED light efficiency, color rendering index, and maintaining the consistency of color temperature, it is still necessary to study and give every batch production. Model specifications of the LED Vf-junction temperature curve, junction temperature - light efficiency curve, and reference temperature measurement point requirements when working in lamps, not only for the final lighting product design needs, but also for LED light source production companies The improvement of their own technical standards and the development of the product. 2. As a lighting designer and lighting manufacturer, they should fully understand the various curves provided by LED light source companies and the meanings of various parameters. In addition to ensuring that the lamps meet the requirements of safety, EMC, and light distribution performance, the lamps should be designed. In all kinds of possible adverse conditions, it can also ensure that the LED has a good working environment with sufficient margin. Only in this way can the LED ensure its long-life characteristics at higher light efficiency levels. 3. As scientific research and testing institutions and professional standardization technical committees, we should study the characteristics of the lighting LED and its modules, research more suitable standard LED lights, and propose better and more complete measurement methods to make our country in this respect. The detection level reached the international advanced ranks. At the same time, it guides LED manufacturing companies to test out a reliable Vf-junction temperature curve and junction temperature-light efficiency curve for each stereotyped LED light source. And early completion of this product standard improvement work. Only the majority of employees in the manufacturing process of LED and its final products can correctly identify the applicable standards, understand the current deficiencies, self-improvement, and can implement this correct and comprehensive understanding into product design. Then the application level of products such as lighting LEDs and their lamps and lanterns will make great progress, and the technical level of LED and its final products will also reach a new height.