Due to the improvement of LED improvement technology and the cost reduction, LED lighting products are more and more popular among consumers. Among them, the LED tube is a substitute for the traditional fluorescent tube, and its application proportion is also increasing.
According to the statistics of the High-tech Research Institute LED Research Institute (GGII), the output value of China's LED lamp market reached 15.5 billion in 2017, second only to bulbs, and is the second-largest sub-product of indoor lighting. The annual output value increased year-on-year. The speed reached 30.6%.
Benefiting from the increasingly stable quality of LED lamp products, the strong demand in overseas markets, the replacement of traditional lighting and the gradual improvement of the channel layout of various enterprises, China's LED lamp market can still maintain a growth rate of 21.7% in 2018. It can be seen that the LED lamp market still has a broad market space.
As a global lighting leader, Philips Lighting has introduced T8 LED tubes for T8 fluorescent tube retrofits. It is reported that Philips Lighting has introduced standard, enhanced and super bright three-color brightness to meet different lighting requirements of T8 LED tubes, and each product meets CE, KEMA, TUV, RoHS and other certification requirements.
High-tech LEDs have learned that Philips lighting LED tubes are energy efficient and greatly reduce power consumption. The product replacement is convenient, the long life is long, the operation and maintenance cost is reduced, and the comprehensive benefit of the enterprise is improved.
As we all know, Philips Lighting continues to improve LED lamps, and its products have reached the leading level in the industry. It is worth mentioning that at the "2017 High-tech LED Annual Meeting and Golden Globe Awards Ceremony", its T8 LED tube beats many participating companies with its excellent performance, and won the lighting product evaluation LED straight tube light class gold ball. prize.
In order to gain an in-depth understanding of the performance of Philips Lighting T8 LED tubes in terms of optoelectronic performance and safety, this year's high-tech LEDs will compare the Philips lighting T8 LED tubes with three domestic famous brand samples and one unbranded sample. .
text
1 electrical performance parameters
Get 5 samples of test data, the first thing to focus on is the electrical performance parameters of the product. All five samples were operated at 220V. We found that the five samples were lower in terms of power factor, but the Philips lighting samples were higher than the other samples, mainly because the five samples used a low PF drive.
In terms of measured power, the deviation of the Philips illumination sample is -3.46%, the deviation of sample A is 6.72%, the deviation of sample B is -4.2%, the deviation of sample C is -2.29%, and the deviation of sample D. It is 9.22%. As can be seen from the above data, in terms of power accuracy, sample C> Philips illumination sample> Sample B> Sample A> Unbranded sample. (where ">" stands for "better than")
2 light parameters
Philips lighting samples and samples A, B, C color temperature is 4000K, in terms of optical parameters are comparable; and sample D color temperature is 6500K, so the light efficiency and average illumination is not comparable with the other four samples.
In terms of luminous flux, Philips lighting samples were the highest and sample D performed the worst. Among them, sample B is closest to the Philips illumination sample. The luminous fluxes of samples A, B, and C and Philips illumination samples differed by 11.60%, 3.14%, and 21.23%.
In terms of light efficiency, Philips has the highest illumination sample, followed by sample B, and sample C and sample A have relatively low light efficiency. Among them, samples A, B, C and Philips lighting samples differed in light efficiency by 20.03%, 2.39% and 16.98%.
In terms of average illuminance, sample B had the highest average illuminance value, followed by Philips illumination samples, and sample C and sample B had a difference of 28.78% in average illuminance.
3 safety factor
All five samples were tested in strict accordance with IEC 62776 (Safety Requirements for Double-Ended LED Lamps). The test report shows that all five samples use the lamp head according to IEC60061-1 and use the gauge inspection according to IEC60061-3 to ensure the interchangeability of the lamp cap.
In addition, from the data point of view, samples A, C, D have electrical connections at both ends of the lamp during the insertion process, do not meet the safety requirements of the pins during insertion, and therefore do not meet the IEC 62776 (double-ended LED lamp safety requirements) standards; Sample B satisfies no contact current even when the switch is turned to 'off'. However, the way of the extra switch does not meet the requirements of IEC 62776. In actual product installation and use, 100% safety cannot be guaranteed.
Philips lighting samples use pure single-ended wiring, and there is no electrical connection at both ends of the lamp during insertion, in accordance with IEC 62776.
4, installation
As we all know, the traditional fluorescent tube is replaced by an LED tube. It is not directly removed from the tube as we replace the traditional fluorescent tube. Then, the new LED tube is directly mounted on the bracket without any modification of the line. Such a transformation method not only fails to achieve the desired energy-saving effect, but also causes the LED tube to be damaged. In order to replace the traditional fluorescent tube with the LED tube, the relevant lines in the bracket must be adjusted and modified. Whether it is a double-ended LED or a single-ended LED, the circuit needs to be modified during installation.
However, some of the double-ended LEDs have an internal electrical connection between the two ends. When one end of the double-ended LED is inserted into the charged socket, the other suspended end is energized. In practical applications, since the installation user often cannot distinguish whether the lamp switch has cut off the power, when the double-ended LED lamp is inserted at one end, the other end of the pin can cause electric shock and additional damage to the human body due to possible electric shock of the installer.
Single-ended LED lights are safer than double-ended LEDs. The high-tech LED noticed that the Philips lighting samples were single-ended power-in type, and the samples A, C, and D used double-ended power input, and the risk of electric shock during installation was high.
Sample B uses a transition scheme with a double-ended wiring add-on switch. Sample B may have an electric shock when the switch is turned on, and no electric shock when the switch is turned off. In addition, for the sample B scheme, if the start switch is not set to the closed state when the lamp is installed, the LED lamp cannot be lit.
Therefore, sample B is a transitional solution, which not only does not comply with the IEC standard, but also causes user confusion. Philips lighting samples do not have this concern.
In contrast, Philips Lighting's single-ended solution is safer and meets IEC standards.
5, the price
As can be seen from the above table, although the Philips lighting samples are significantly higher than other brands in the total purchase price, the difference is not very obvious, which means that the advantages of Philips lighting samples in luminous flux can effectively compensate. Its price disadvantage.
In terms of power, sample C has the smallest deviation, followed by Philips. At the same time, in terms of power factor, Philips lighting power factor is relatively high, which indicates that Philips lighting samples are converted to heat and other reactive power is relatively low during operation, which increases equipment utilization and reduces line power loss.
At the same time, Philips lighting samples have the best performance in terms of light efficiency. At the same power, Philips lighting samples are the most illuminating and brightest. In addition, Philips lighting samples have an absolute advantage in terms of safety. From a safety point of view, Philips lighting is the first choice. After all, for consumers, safety is priceless.
Summary: As the world's leading brand and lighting industry leader, Philips Lighting strictly adheres to international advanced standards in terms of electrical performance, efficacy, illumination and safety of LED tubes. From this comparison and evaluation, it was found that Philips LED tube has performed well in all aspects of optoelectronics. At the same time, from the perspective of consumer safety, Philips Lighting has carefully considered the safety of all aspects of consumers in the product design stage.
As an outstanding work of internationally renowned brands, Philips Lighting LED Tubes will be loved by consumers for its superior performance.
Motorcycle MP3 player with speaker
5 inch digital car bass tube with FM transmitter
Specifications:
1) With5 inch speaker, which makes music sounds more perspective.
2) Embedded amplifier, shows us a professional amplifier and subwoofer, which makes subwoofer smart, fashionable and perfectly.
3) Support USB, SD card slot and MP3 format ( line in socket), which provides you more music source are supported by our WeiDa subwoofers.
4) With remote control function
5) Previous/next button, bass
6) High power output.
7) FM radio function for option.
8) 12V
9) 6850C
10) Audio output
11) +10/-10 songs
12) Indicator light
13) Volume control
14) Pause playback
15) Remote control
16) Stations memory
17) Auto seek stations
18) Power output: 2x15W
19) USB mobile charger
20) Digital songs selection(by remote control)
21) Last position memory
22) Built in remote receiver
23) Repeat and mute function
24) EQ effect: Pop-rock-classic-jazz
25) Power direct connector, TRE OUT connector
26) USB port, SD-MMC slot, AUX in, compatible mp3 format
Optional voltage: DC12V or 24V, AC220V.
With plastic cover on both ends for option.
Motorcycle MP3 player with speaker,High Quality Motorcycle MP3 player with speaker,Motorcycle MP3 player with speaker Details, CN
Jiangmen soundrace electronics and technology co.,ltd. , https://www.soundracegroup.com