With the development of commodity economy and the prosperity of urban economy, commercial lighting design has become more and more focused on aesthetics and modernization, and is increasingly moving towards attracting customers' focus, guiding customers to shop and providing a comfortable shopping environment. In the different lighting environment requirements of commercial lighting, a variety of lighting fixtures are derived. Among them, spotlights as a typical main light without a fixed scale, can create a good indoor lighting atmosphere. However, the previous technologies have limited the replacement of traditional ceramic metal halide lamps by LEDs in terms of light efficiency and heat dissipation, and delayed the promotion of LED applications in the field of commercial lighting. In order to further promote the application of LED in commercial lighting, Philips Lighting has released a new generation of commercial LED PAR30 spotlights to meet the replacement requirements of 70W ceramic metal halide lamps in terms of lumens and color temperature. This high-brightness, high-efficiency, high-quality product will lead commercial PAR spotlights into the LED era with its excellent heat dissipation, safety and precision. It is understood that Philips Lighting's new generation of commercial LED PAR30 spotlights, with a power of only 40W, a total luminous flux of 4,500 lumens, a color temperature of 3000K, can replace 70W ceramic metal halide lamps. In order to better concentrating performance, it is necessary to use a point light source with smaller size and higher brightness. At present, the COB chip in the world can not meet the design requirements. For this reason, Philips Lighting has specially customized the ceramic substrate COB chip, which is the first in the industry. The high-density, COB chip has a luminous efficacy of nearly 150 lumens per watt. Of course, there are not a few manufacturers that produce and sell PAR30 spotlights on the market, and the performance of the products is mixed. In order to gain a deep understanding of the performance of various brands of spotlights in the market, and to provide some reference to consumers, this year's high-tech LED specially selected four domestic and foreign brand spotlight samples for test comparison, from basic photoelectric parameters and so on. Aspects of the analysis. text 1 Product basic information In terms of product size, Philips, B brand, C brand and D brand four samples have a size of 95mm*95mm*125mm, and the size of the light-emitting surface is φ95mm, but the Philips and B brands have the largest effective light-emitting area. In terms of net weight of products, the net weight of Philips and B brands is 0.45kg, while the net weight of C and D brands is 0.2kg. Mainly because of the different materials used in the lamp cup, the Philips and B brand sample lamp cups use die-cast aluminum as a whole, which has good heat dissipation; the C brand and D brand samples use extruded aluminum + plastic parts, and the heat dissipation performance is relatively poor. From the appearance, Philips PAR30 spotlight sample product side of the light source is slightly higher than the lamp 5mm, revealing the side of the cooling hole, while boldly canceling the front cooling hole, the use of no border design, to maximize the luminous area. 2, basic photoelectric parameters 2.1 Electrical parameters Get a luminaire, we generally focus on the basic electrical performance parameters of the product, 4 samples are working at 220V voltage, we found that Philips and D brand are excellent in measured power and power factors, B brand in measured power and power The performance on the factors is poor. As we all know, the power factor is a factor that measures the efficiency of electrical equipment. The low power factor indicates that the reactive power of the circuit for alternating magnetic field conversion is large, thereby reducing the utilization of the device. The B brand and the C brand have smaller power factor values, and the efficiency of converting electrical energy into light energy is lower, and the generated reactive power (for example, heat) is higher. 2.2 Luminous flux and light efficiency When different lamps need to be compared in terms of light efficiency and other parameters, the respective power and related color temperature should be kept at a relatively consistent level. Since the D brand color temperature is 6000K, the Philips, B brand and C brand color temperature are 3000K, so the D brand The results of the sample efficacy test are not comparable to the other three samples. From the test results, Philips samples have the best performance in terms of luminous flux and light efficiency, and the B brand performs poorly with the C brand. In terms of luminous flux, the three samples differed greatly, with a difference of 57.83% and 35.8% respectively. In terms of light efficiency, the B and C brand samples differed from the Philips samples by 22.6% and 27.75%. As can be seen from the chart, the Philips PAR 30 spotlight sample has an absolute advantage in terms of luminous flux and efficacy. 2.3 Illuminance and central light intensity Same as above, because the color temperature of D brand is 6000K, the color temperature of Philips, B brand and C brand is 3000K, so the D brand sample illumination test results are not comparable with the other three samples. From the perspective of central illumination, Philips PAR 30 spotlight sample center has obvious illumination advantages, and B brand and C brand sample center illumination have a difference of 42.62% and 26.57%, respectively. 2.4 Illumination angle and beam angle The chart data shows that in terms of illumination angle, the Philips PAR30 spotlight sample has the largest angle and is the standard illumination angle; the B brand sample has the smallest illumination angle and high directivity, and can be used as a local illumination source. In terms of beam angle, Philips sample beam angle is the largest, the actual lighting effect is the largest spot, the widest scattering range; D brand beam angle is the smallest, the spot is the smallest, the center light intensity is also the largest. Comprehensive analysis In this evaluation, the photoelectric parameters of the test samples are based on the relative co-directional error measurement mode, and the measured data is not absolute, and only the objective comparison values ​​can be objectively reflected. From the basic optoelectronic test parameters analysis, Philips PAR 30 spotlight samples are excellent in terms of electrical parameters and optical parameters. In terms of the deviation between the nominal power and the measured power, the D brand sample is the best, and its power factor is not much different from that of the Philips sample; in terms of luminous flux, light efficiency and central illumination, Philips PAR 30 spotlights are higher than other samples. Less, can provide the best lighting effects. Summary: Philips Lighting is an internationally renowned brand and a leader in the lighting industry. The innovative technology and stable product service quality are impressive. Through this comparison, the Philips PAR30 spotlights performed well in all aspects. As an excellent product of the international leading brand, Philips PAR30 will lead the commercial PAR spotlight into the LED era. Metal Case IP65 Waterproof LED Driver Ideal for indoor and outdoor installations, including street lighting and architectural illumination, these highly efficient LED Drivers are protected from dust and moisture, providing outputs up to 150W.
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