Many customers reflect, don't know how to judge the quality of the
LED spotlights, light assertion is not way to listen to the lighting manufacturer.
In this from the perspective of objective, look at how to judge the quality of the LED tube light is more scientific.
As a manufacturer of LED tube light, LED lighting lamps and lanterns, sound floating photoelectric according to years of experience in production, research and development, project, to teach you how to judge the quality of the LED tube light.
One, overall appearance, parameter when buying LED spotlights, we must first do is check the appearance of lamps and lanterns, in addition to see whether the appearance of the lamp body whether bright and clean, the craft is exquisite in place, but also to meet the needs of the project, carefully measure the lamp body appearance of a variety of conditions, whether fit demands.
Surface of lamps and lanterns, for example, the color of the ring is in line with the project requirements, installation is appropriate, the lamp body parameters such as height, diameter, whether in accordance with the project requirements.
Second, stroboscopic canister light stroboscopic will pose threat to vision, and the success of the project, recommends the choose and buy the LED tube light, first ask the stroboscopic depth this data.
Moreover, teach you a spontaneous distinguish stroboscopic tip: when get the LED tube light, insert the power supply light LED tube light, and then using a mobile phone camera close to the shiny surface, if there is stroboscopic phenomenon can be observed.
Three, light quality comparison in terms of the comparison of light quality, you can at the same time open the same manufacturer to produce the same type of LED spotlights, observe its and flare, light color and brightness are the same, as a product but also a significant difference, then prove that it is inferior product, in theory, the same factory production out of the tube light is not light color and brightness of inconsistent problem.
Positive spot side there (see and flare:
Especially to observe side light, is there a pair of light)
Four, the cooling performance to judge a lamps and lanterns of radiator do well, the most direct method is to measure the lamps and lanterns to work when the temperature of the LED chip, namely the junction temperature.
Here, we suggest that the intensity of illumination method junction temperature measurement in half an hour, to judge the merits of the lamps and lanterns of the radiator.
Due to the LED junction temperature rise, high luminous flux will decline.
So, only need to measure the intensity of illumination of the lamps and lanterns as in the same position change, can the launch of the junction temperature changes.
Practice: 1, choose a place without external light interference, had better be in the evening, turn off the other lights.
2, cold light, measuring a location of the intensity of illumination, immediately write down the readings for the cold illumination.
3, the lamps and lanterns and light meter position unchanged, lamps and lanterns of continuous work.
4, after half an hour, and then read the illuminance values here, write down the readings for the hot intensity of illumination.
5, if the two Numbers about (
1015%)
Basic good, the lamps and lanterns of the cooling system.
6, if the two Numbers are far,
More than 20%)
, the lamps and lanterns of the cooling system is questionable.
In this list several products on the market the luminous flux vs junction temperature curve of chip, from which we can see how many lumen flux decline, thus indirectly that junction temperature rose to how many degrees Celsius.
Graph: Mr OSLON SSL 80 White chips, luminous flux 15% lower than 25 ℃, the junction temperature has more than 120 ℃, basic can determine the cooling system is not qualified.
Graph: OSRAM E5 (
5630).
Chip, luminous flux decreased by 20% at 25 ℃, junction temperature has more than 140 ℃, basic can determine the cooling system is not qualified.
Graph: the INFOR (
Sound floating photoelectric)
如果- - - - - -
IDL01003 chips, increased junction temperature from 25 ℃ to 40 ℃, the luminous flux is go up.
Then began to decline, to 120 ℃, the flux decline about 10%.
Basic can determine the cooling system is good.
Sound photoelectric LED downlight IF -
IDL01003 radiator, sound float photoelectric radiator has the following advantages: to meet the national standards of all aluminium, combined with the cold forging process, optimize the product and improve from the structure, as the integration of the radiator, thermal resistance, uniform temperature, is better than die casting and stretching process, the cooling effect is ideal.
In general, according to the above points, basic can objectively judge the quality of the LED tube light.
Wish you can choose the lamps and lanterns, completes the project.
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