Japanese Light Industry (JELMA) on October 8, 2010 led to the direct light source LED light tube formulated the "L-type lamp with a straight mouth tube LED light system (general lighting)" (JEL801: 2010) standards. Office buildings and other commonly used straight-tube fluorescent alternatives, straight tube LED lights are more strongly expectations. Although Japan and South Korea, the market has made LED lights available in straight tube, but the manufacturers to get involved in small and medium enterprises as the center, mainly because there is no standard lamp manufacturers while serving products hesitant. The standards will drive the popularity of straight-tube LED light.
LED lights in the straight tube, the tube had been pointed out that compatibility, brightness, weight and other aspects and safety issues. The standard that can address those concerns by adding content. JELMA Toru Takeuchi Senior Managing Director and Technology Minister Yagi two sensitive government recently accepted an interview with this site, describes the background of standards and standard features, and more.
- Please talk about the process of standards development
JELMA: lighting lamps must first be used to ensure safety and compatibility. Currently on the market are mostly straight-tube LED light power needed for the construction of the lighting apparatus, or straight tube fluorescent lamps LED lights mounted directly on the seat. In terms of power input, both as an ordinary fluorescent lamp ends as input from the product, there are only from the side of the input products. In this case, the compatibility of lamp out of the question.
But still most of the mouth of the tube lights and straight tube fluorescent lamps with the same "G13" type. Therefore, consumers mistake prone LED lights do not have the compatibility of their access lamp lighting apparatus of the situation. And in Japan, with the G13 lamps lighting the mouth of diverse styles, from the old to the latest of both. Different from the power circuit, and therefore can not say that any lighting LED lamps can be used to replace fluorescent lamps.
At present, there appears straight-tube LED light is not too much, the seller Shangqie able to teach the correct use of the consumer. However, this increased circulation of light, this will not be able to maintain the standard of service that consumers most likely to use the case of an error. Lamp lighting available in the market as many as hundreds of millions. Even that caused by the misuse of accident frequency of only ppm level, so every year dozens occurred. JELMA not to be able to access all of the mouth of G13 lamps straight fluorescent lamps play safe "security votes."
For this reason, in the development of straight-tube LED light standards, we decided not to use the G13 lamp port models. Changed the name of its "L-type" light mouth. In this way, straight tube can prevent access to use LED lights error straight fluorescent lamps for lighting the.
- Please explain the main lamp export standard features
JELMA: not only for single lamp, but also on the use of straight-tube lamps LED lighting systems set the standard. Systems generally have four characteristics. The first is set in the lamp power circuit outside of DC supply to the lamp. In other words, eliminating the power supply circuit single tube, into the DC drive. Second is the use of the L-type light mouth. Then the lamp can be replaced. Finally, the end face from the side of the lamp power (unilateral power.)
The biggest reason the external power supply circuit is to improve straight-tube luminous efficiency of LED lights. LED lights at this stage to reach as much as through the straight tube fluorescent lamps 40W-class brightness and efficiency. External circuit to the power mode is taken into account so as to increase the lamp within the optical deSign freedom to improve the brightness and efficiency.
Will have the mouth of L-type lamp holder to be replaced was designed for long-term use of lighting can ensure high security. In either light, lamp holders, after long-term use can not avoid deterioration. The lamp to be replaced after the design will ensure the long-term use of lighting.
Unilateral power to change is to improve the safety of LED lamps. LED lights in the words of both ends of the electrode, the electrode access lamp even if the unilateral mouth, the hand contact with the other side of electrodes also occurs when the electric shock. Focused through the side of the electrode can avoid this risk of electric shock. In addition, although straight-tube fluorescent terminals at both ends, but the lamp electrodes at both ends will have access to light when the power port, so do not worry about electric shock.
- It was also pointed out that the existence of straight-tube LED light the danger of falling. The development of standards made this point what kind of consideration?
JELMA: Indeed, the fluorescent lamps 40W-class products only 200g, and the market in the straight tube type LED light still weighing more than 600g of product. LED lamp heat will lead to bending, the use of heat shrink process may occur, along with the risk of falling. Does not set standards, when in the long-term use LED lamps will allow consumers to worry.
Therefore, the standard of shrinking Note 1) and bending Note 2) were provided. Compared with the use of fluorescent glass, most of the LED lights use the resin material susceptible to the impact of shrinking and bending.
Note 1) The provisions of this standard will shrink as the ambient temperature difference of 50K between the mouth when the lamp and the light changes to control the distance of 2.0mm or less.
Note 2) The lamp itself, the standard will be defined as the weight of the central deflection due to the Department of 10mm or less.
- Please tell us about the specific brightness values and other performance indicators
JELMA: In the current straight-tube LED light, the more prominent is the high vertical illumination, no less than the fluorescent products as a selling point. The standards to all aspects of no less than fluorescent lamps, fluorescent lamps, and no difference with the use of the focus for consideration. For example, for the replacement of fluorescent lamps 40W-class products, to develop a day of white LED lights straight flux tube reaches more than 2300lm, color rendering index of 80 or more, and the angle of 120 degrees in the lamp light range, less than the overall luminous flux 70% and so forth.
These values are provided a clear reason. For example, 2300lm the flux tube is taken into account dozens of other uses determined by the actual use conditions. Under the same setting compared with 40W fluorescent level, this is needed to obtain the same luminous flux illuminance. Moreover, "the range of 120 degrees in less than 70% luminous flux" is sure to pay attention to. It features allow light to reach over 120 degrees full part. With the use of lighting control board to get the desired reflection of light directed by such a lamp lighting apparatus is difficult to use only under the Fang Mingliang lamp. In addition, the light does not reach the tube around it, will appear "because the walls are dark, but under the Fang Mingliang feel uncomfortable" situation. To prevent this, we must meet this condition.
In the standard-setting stage, JELMA joined the company put forward the views of the conditions are too stringent. The conditions set by the standard is technically a very high threshold indeed. But do not do so, there will be differences in the use of fluorescent lamp than that. LED is still in the development process, so in the future to improve the efficiency and brightness of LED consider setting such a value.
- It was noted that there are products LED lights "flicker" problem
JELMA: For the lamp current waveform flowing in, we require that "volatility is not more than 1.3." This is to prevent flicker. Volatility refers to the lamp current flowing in the denominator of the average, to changes in current were calculated for the molecular value. This provides the maximum value of 1.4, then the current flowing in the lamp will periodically close to zero. Not more than 1.3, then it will not happen this phenomenon. Moreover, we will wave to 100Hz or more provisions of the cycle.
- The standards took how long?
JELMA: about 1 year. 2009, JELMA to "promote the popularity of LED lighting right - issues and measures" in the name, released on the market selling straight fluorescent lamps for performance comparison of the survey report and put forward as an opportunity to summarize the relevant standards. JELMA tube member companies engaged in the development for many years. Although the LED light source for new, but its cultivation as a lamp lighting the problems that may arise, such as these enterprises have been under the fluorescent light of experience can make rough guess. These experiences in the standard formulation has been well spent.
- In the international standardization will take action?
JELMA: is considering proposals to international standards. We recently in the International Electrotechnical Commission (IEC) presented at the meeting of the standards, interest was aroused. Buy books from overseas, the standard advice is also very much.
LED lights straight tube, the tube had been pointed out that compatibility, brightness, weight and other aspects of security problems. The standard that can address those concerns by adding content. JELMA Senior Managing Director Toru Takeuchi b and Technology Minister Yagi sensitive government recently accepted an interview with this site, describes the background of standards and standard features, and more.
