Detailed test the reliability of LED lightingon December 5th, 2011 at 2:04 AM
Emerging as a source of strength, led the way with the traditional light sources emitting different. It is the use of semiconductors PN section of electrons and holes in the compound to light. Different ways of decision-emitting LED and is essentially different from the traditional light source, also determines its own uniqueness.
First, LED small, single high-power LED chip size is generally only 1 square millimeter, with the outside packaging material, an LED is usually only a few millimeters in diameter, multi-chip LED mixed light as an integrated multi-LED chips, These slightly larger dimensions. This exterior lighting design brings high flexibility, LED bulb lamps can be made as needed point, line or area light source, also can customize the structural characteristics of the lamp size, more see the light but not light to achieve good results. More and more modern building of glass walls and other new mining more material, which makes the traditional way of foreign investment and lighting have been gradually replaced by means of light illumination, and LED lighting is an excellent choice of light, and help reduce light interference and light pollution.
Second, LED colorful, outgoing light color is good. Monochrome monochrome LED emitted light is better, which is the light from the LED chip principle of the decision, with different luminous materials, you can get different colors of monochromatic light, while, on the basis of the blue chips, with yellow phosphor, you can get different color temperature of white light LED, or by the red, green, blue color LED chip package to an LED which, using the corresponding optical design to achieve three-color light mixed light.
Third, LED’s long life, fast response, you can repeatedly switch. High-power LED in the normal life of working conditions can be up to 50,000 hours or more, and, LED response quickly, while the LED can be repeated without switching operation or performance of their life have a harmful effect. This point is very different from traditional light sources. If you repeatedly switch incandescent, their life down very quickly; ordinary fluorescent lamps, each switch will result in the loss of electrode emission materials, so often the life of the lamp switch will lead to rapid decline. For the high-pressure gas discharge lamp, the light will repeatedly switch the electrodes caused by the same very negative impact, and that this type of light source can not achieve hot start, that lamp off after a certain time to be cooled in order to start again . Therefore, the need to repeatedly switch operation for some effects in terms of lighting, LED has a unique advantage.
Fourth, LED light color can achieve rapid and diverse changes. As noted above, the red, green and blue color LED chip package together, the three will be issued to mixed light shade, you can get a white light. If we are red, green, blue three chips to control, you can change the color light output of light in the proportion of stars in order to achieve full light output LED color changes. Thus, an LED is like a palette, you can deploy depending on the needs of different colors of light, which is the traditional light source can not be done. LED fast response, easy to control, so you can achieve the fast light color, variety of changes, we can use this feature LED, constructed many dynamic effects.
Fifth, LED can be used to build a variety of patterns. As the LED small, solid structure, the response time is short, we can build some LED graphics; then these graphics then be combined to achieve certain design effect. Now, in the city streets, businesses and stores, we can see a lot of planes built by the LED pattern or three-dimensional graphics, designs and graphics to achieve these very compelling results. In addition, we can focus on a large scale LED control, the whole building’s exterior as a dynamic screen display.
1 Damp heat test: After the impact test fixture, there could be no leakage, no bright lighting and other electrical anomalies.
Test method: according to the rated input voltage led lights lighting power; through the relay control lamp at normal temperature and pressure impact test,
Test set: lighting 30s, lights 30s, circulation 10,000.
After lighting the impact tests, the leakage can not occur, lighting does not shine and other electrical anomalies.
(2) will be led by the regulator input voltage to the lamp for the maximum rated input voltage of 1.1 times; the lamps above method up and down, left and right, respectively, before and after the test in three directions for 30 minutes.
Will be led lamps placed in a room temperature of 25 ℃ environment;
Temperature cycle test: the regulator will be led by the input voltage to the lamp for the minimum rated input voltage of 0.9 times;
3 led lights will be placed in a constant temperature and humidity box, constant temperature and humidity box is set to 95% relative humidity, the temperature is 45 ℃;
Test method: reference standard: experience in the industry
After lighting the impact of temperature and pressure tests, leakage can not occur, lighting does not shine and other electrical anomalies.
4 impact test temperature and pressure: the led lamps placed in a room temperature of 60 ℃;
The vibration of the vibration tester speed to 300 rev / min, amplitude to 2.54 cm, start vibrating instrument;
Test method: low-voltage and low-temperature impact test: the led lamps placed in a test box, test box temperature can be adjusted rate of temperature change; for objects: led lamps (lamps finished with leddriver)
led lamps vibration test: Test requirements: Test method: After the vibration test fixture, can not occur off parts, structural damage, and abnormal lighting does not shine.