CN104344942A - Typical area environmental adaptability test method for LED (light emitting diode) street lamp - Google Patents
Typical area environmental adaptability test method for LED (light emitting diode) street lamp Download PDFInfo
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- CN104344942A CN104344942A CN201410576950.9A CN201410576950A CN104344942A CN 104344942 A CN104344942 A CN 104344942A CN 201410576950 A CN201410576950 A CN 201410576950A CN 104344942 A CN104344942 A CN 104344942A
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Abstract
The invention discloses a typical area environmental adaptability test method for an LED (light emitting diode) street lamp. The method comprises the following steps that (1) the LED street lamp is arranged in a low-air-pressure test box, and LED street lamp samples in the box are placed on every two layers so that air can flow among the samples; (2) according to storage conditions of environmental conditioning test boxes in different typical areas, the continuous exposing is carried out for a period of time under the storage conditions; (3) after the continuous exposing, different storage conditions of the test boxes are conditioned again according to the environment of different typical areas, in addition, under the storage conditions, the voltage of the lamp is regulated to the rated work voltage, whether the samples can normally start to work or not is observed, and if test samples fails, the storage conditions are maintained for continuous work for a period of time; (4) the steps are repeatedly circulated for many times, and the test is completed.
Description
Technical field
The present invention relates to a kind of LED street lamp performance test methods, especially relate to a kind of method of testing of environmental suitability of LED street lamp type area, whether meeting the environmental suitability requirement of type area for detecting LED street lamp.
Background technology
As the light source of new generation that the whole world is gazed at most, LED is because of advantages such as its high brightness, low energy consumption, low in calories, nontoxic, recyclable application again, and 21 century of being known as has the green illumination light source of Developing prospect most.Although the speed of development of LED street lamp is swift and violent, the standard of LED street lamp relatively lags behind.In fact, each department, to the standard of LED street lamp, index are not quite similar, but for regional disparity, environmental suitability becomes an important indicator, and its otherness will affect the quality of the performance of LED street lamp.
Existing LED environmental suitability test, the weatherability of main examination sample, comprises high temperature storage and work, low tempertaure storage and work, for under typical weather conditions, such as the severe cold area, plateau in southwest, the severe cold area in northeast do not have the requirement of environmental suitability.
Industry and association have formulated series of standards for LED street lamp, for the test method of environmental test aspect, and the deficiency below ubiquity:
The first, the test method of examination environmental suitability is single, fails effectively to simulate LED street lamp weather conditions run in actual use.
The second, the weather condition factor examination for domestic type area is abundant not, and test condition does not have the representativeness to LED street lamp environmental suitability.
Summary of the invention
The object of the present invention is to provide the method for testing of a kind of LED street lamp type area environmental suitability, can effectively examine LED street lamp whether to meet the environmental suitability requirement of type area.
Foregoing invention object realizes by following technical measures: a kind of method of testing of environmental suitability of LED street lamp type area, comprises
(1) install LED street lamp in chamber, in case, LED street lamp sample interlayer is put and gas can be flowed at sample room;
(2) according to the storage requirement of the environmental modulation chamber of different type area, LED street lamp sample continues to expose a period of time under this storage requirement;
(3) after continuing exposure, the different storage requirements of chamber are again regulated according to the environment of different type area, and under this storage requirement, LED street lamp sample voltage is regulated to be rated operational voltage, observe sample and whether normally can start work, as test specimen no-failure, then keep this storage requirement continuous firing a period of time;
(4) repetitive cycling above-mentioned steps 2, more than 3 time, test completes.
Method of testing of the present invention specifically comprises the following steps:
(S1) install LED street lamp in low pressure test chamber, in case, LED street lamp sample interlayer is put and gas can be flowed at sample room; Low pressure test chamber meets GB/T2423.1 and tests the test condition specified in Ad and GB/T2423.21 test M;
(S2) with the speed being no more than 1 DEG C/min, test the temperature inside the box is down to-40 DEG C, makes test sample reach temperature stabilization at this temperature;
(S3) with the speed being no more than 10kPa/min, pressure in chamber is dropped to 50kPa;
(S4) under the storage requirement of the low-temperature and low-pressure of above-mentioned steps S2, S3 adjustment, this temperature and pressure condition is kept to continue to expose 16h;
(S5), after continuing to be exposed to 16h, with most rapid rate, case internal gas pressure is returned to normal pressure immediately, then with the speed being no more than 1 DEG C/min, test the temperature inside the box is increased to-25 DEG C, make test specimen reach temperature stabilization at this temperature.
(S6) with the speed being no more than 10kPa/min, pressure in chamber is dropped to 60kPa;
(S7) under the storage requirement of the low-temperature and low-pressure of above-mentioned steps S5, S6 adjustment, LED street lamp voltage is regulated to be rated operational voltage, observe sample and whether normally can start work, as test sample no-failure, then keep this temperature and pressure condition continuous firing 8h;
(S8) step S2 to S7 is a test loop, and in repetitive cycling 10 cycle, test completes.
In above-mentioned steps S1, if described chamber is the chamber of forced-air convection type, the Lights section of LED street lamp should back to chamber air outlet.
In above-mentioned steps S1, adopt putting of netted spacer layer supports LED street lamp, to avoid causing product local overheating situation.
In above-mentioned steps S2, for warranty test sample reaches temperature stabilization at this temperature, adopt and thermopair is installed on LED street lamp lamp body, guarantee that sample reaches environment temperature.
Method of testing of the present invention comprises the following steps:
(A 1) installs LED street lamp in temperature test chamber, and in case, LED street lamp sample interlayer is put and gas can be flowed at sample room; Temperature test chamber meets GB/T2423.1 and tests the test condition specified in Ad and GB/T2423.3;
Humiture in chamber is reached 40 DEG C, 95%RH by the fastest rate temperature change that (A 2) can regulate according to chamber, makes test sample be issued to temperature stabilization in this humiture;
Under the storage requirement of the temperature that (A 3) regulates at above-mentioned steps S2 and case humidity, this temperature and humidity condition is kept to continue to expose 4h;
After (A 4) continues to be exposed to 4h, with most rapid rate, the temperature inside the box is down to-25 DEG C immediately, makes test sample reach temperature stabilization at this temperature, now can produce at lamp surface and freeze;
Under the storage requirement of the temperature that (A 5) regulates at above-mentioned steps S4 and case humidity, light fixture voltage is regulated to be rated operational voltage, observe sample and whether normally can start work, as test specimen no-failure, then keep this temperature and pressure condition continuous firing 4h;
(A 6) step S2 to S5 is a test loop, and in repetitive cycling 6 cycle, test completes.
In above-mentioned steps A1, if described chamber is the chamber of forced-air convection type, the Lights section of LED street lamp should back to chamber air outlet.
In above-mentioned steps A1, adopt putting of netted spacer layer supports LED street lamp, to avoid causing product local overheating situation.
In above-mentioned steps A2, for warranty test sample reaches temperature stabilization at this temperature, adopt and thermopair is installed on LED street lamp lamp body, guarantee that sample reaches environment temperature.
Compared with prior art, method of testing of the present invention has following beneficial effect:
The inventive method considers the environmental work requirement of LED street lamp in type area, according to the climatic characteristic of highlands and the climatic characteristic of severe cold area, the influence factor that in using in conjunction with LED street lamp is actual, working temperature is high, thermal value large, temperature shock air pressure change causes LED technique, to reality use in can run into environmental suitability, consider air pressure change on the impact of equipment; Consider that icing phenomenon is on the impact of equipment; Whether whether equipment can normally startup optimization and low-temperature and low-pressure run duration occur losing efficacy after low-temperature and low-pressure stores, in icing situation, whether normally whether can occur inefficacy under startup optimization and low temperature severe cold environment; The inventive method effectively can reflect whether LED street lamp meets the environmental suitability requirement of type area.
Embodiment
Embodiment one
For Tibet Plateau, there is certain adaptive representativeness of southwest plateau climatic environment.Plateau climate area has height above sea level, the feature that temperature is low, and winter half year is presented as cold substantially, dry, and rainfall is rare, and much wind, summer half year is that rainfall is many substantially, the environmental characteristics of many hails.
For this climatic characteristic, LED street lamp must have the storage capability of low-temperature and low-pressure, also under low-temperature and low-pressure environment, normally must start work, the harsh grade selecting low-temperature and low-pressure according to this environmental quality is: low-temperature and low-pressure storage temperature :-40 DEG C, air pressure: 50kPa, open-assembly time: 16h.Low-temperature and low-pressure working temperature is-25 DEG C, air pressure: 60kPa, open-assembly time: 8h.
According to method of testing of the present invention, comprise the following steps:
(S1) use low pressure test chamber that GB/T2423.1 should be able to be kept to test Ad and GB/T2423.21 and test the test condition specified in M;
(S2) LED street lamp is installed in chamber, if when chamber is the chamber of forced-air convection type, LED street lamp light source part should back to chamber air outlet, in case, the space arrangement of sample must can ensure that gas can flow at sample room, the interlayer supporting LED street lamp adopts netted spacer layer supports, avoids causing product local overheating situation as far as possible;
(S3) with the speed being no more than 1 DEG C/min, test the temperature inside the box is down to-40 DEG C, makes test specimen reach temperature stabilization at this temperature.For warranty test sample reaches temperature stabilization at this temperature, thermopair can be installed on LED street lamp lamp body, guarantee that sample reaches environment temperature;
(S4) with the speed being no more than 10kPa/min, pressure in chamber is dropped to 50kPa;
(S5) as when pressure has reached the storage requirement of low-temperature and low-pressure in S3, S4 in sample temperature and case, this temperature and pressure condition is kept to continue to expose 16h;
(S6), after low-temperature and low-pressure period of storage has arrived 16h, with most rapid rate, case internal gas pressure is returned to normal pressure immediately, then with the speed being no more than 1 DEG C/min, test the temperature inside the box is increased to-25 DEG C, make test specimen reach temperature stabilization at this temperature;
(S7) with the speed being no more than 10kPa/min, pressure in chamber is dropped to 60kPa;
(S8) as when in sample temperature and case, pressure has reached the storage requirement of S6, S7 low-temperature and low-pressure, light fixture voltage is regulated to be rated operational voltage, observe sample and whether normally can start work, as test specimen no-failure, then keep this temperature and pressure condition continuous firing 8h;
(S9) step (S2) to (S8) is a test period, and carry out 10 periodic tests altogether, test completes.
Embodiment two
For northeast ice box, LED street lamp is under day and night temperature changes huge environmental baseline, the impact brought must be changed by adaptive temperature, condensation can be produced on street lamp time street lamp is stored in the daytime, time jumpy to night temperatures, can icing phenomenon be produced, now require that street lamp can start steady operation under the prerequisite not affecting performance.
For these weather conditions, selected harsh grade: high temperature: 40 DEG C, humidity: 95%RH, exposes 4h, low-temperature working :-25 DEG C, open-assembly time: 4h.
Comprise the following steps according to the described method of inspection:
(S1) serviceability temperature chamber should be able to keep GB/T2423.1 to test the test condition specified in Ad and GB/T2423.3;
(S2) LED street lamp is installed in chamber, if when chamber is the chamber of forced-air convection type, LED street lamp light source part should back to chamber air outlet, in case, the space arrangement of sample must can ensure that gas can flow at sample room, the interlayer supporting LED street lamp adopts netted spacer layer supports, avoids causing product local overheating situation as far as possible;
(S3) according to the rate temperature change that sweat box is the fastest, humiture in chamber is reached 40 DEG C, 95%RH, make test specimen be issued to temperature stabilization in this humiture.For warranty test sample reaches temperature stabilization at this temperature, thermopair can be installed on LED street lamp lamp body, guarantee that sample reaches environment temperature;
(S4) as sample temperature and case humidity reached storage requirement in S3 time, keep this temperature and humidity condition continue expose 4h;
(S5) after 4h, with most rapid rate, the temperature inside the box is down to-25 DEG C immediately, makes test specimen reach temperature stabilization at this temperature, now can show to produce icing phenomenon at light fixture.
(S6) as when pressure has reached cryogenic conditions in S5 in sample temperature and case, regulate light fixture voltage to be rated operational voltage, observe sample and whether normally can start work, as test specimen no-failure, then keep this temperature and pressure condition continuous firing 4h;
(S7) step (S2) to (S6) is a test period, and carry out 6 periodic tests altogether, test completes.
In the various embodiments described above, LED street lamp failure phenomenon comprises:
1, there is the situation of not working in whole lamp or single LEDs;
2, there is scintillation in whole lamp or single LEDs;
3, there is phosphor powder layer obscission in whole lamp or single LEDs;
4, there is obvious colour temperature variation phenomenon in whole lamp or single LED lamp, and namely apparent glow color is undergone mutation, as become " blue light " etc. by " white light ".
Above-described embodiment is only for understanding the present invention's, not be used for limiting practical range of the present invention, relevant those of ordinary skill in the art, on described technical scheme basis, multiple change can also be made, atmospheric pressure value can be adjusted according to local height above sea level minimum, adjust low temperature range value etc. according to local minimum temperature.Namely all equalizations done according to content of the present invention change and modify, all by the scope of protection of the invention is contained.
Claims (9)
1. a method of testing for LED street lamp type area environmental suitability, is characterized in that comprising:
(1) install LED street lamp in chamber, in case, LED street lamp sample interlayer is put and gas can be flowed at sample room;
(2) according to the storage requirement of the environmental modulation chamber of different type area, LED street lamp sample continues to expose a period of time under this storage requirement;
(3) after continuing exposure, the different storage requirements of chamber are again regulated according to the environment of different type area, and under this storage requirement, LED street lamp sample voltage is regulated to be rated operational voltage, observe sample and whether normally can start work, as test specimen no-failure, then keep this storage requirement continuous firing a period of time;
(4) repetitive cycling above-mentioned steps 2, more than 3 time, test completes.
2. method of testing according to claim 1, is characterized in that comprising following concrete steps:
(S1) install LED street lamp in low pressure test chamber, in case, LED street lamp sample interlayer is put and gas can be flowed at sample room; Low pressure test chamber meets GB/T2423.1 and tests the test condition specified in Ad and GB/T2423.21 test M;
(S2) with the speed being no more than 1 DEG C/min, test the temperature inside the box is down to-40 DEG C, makes test sample reach temperature stabilization at this temperature;
(S3) with the speed being no more than 10kPa/min, pressure in chamber is dropped to 50kPa;
(S4) under the storage requirement of the low-temperature and low-pressure of above-mentioned steps S2, S3 adjustment, this temperature and pressure condition is kept to continue to expose 16h;
(S5), after continuing to be exposed to 16h, with most rapid rate, case internal gas pressure is returned to normal pressure immediately, then with the speed being no more than 1 DEG C/min, test the temperature inside the box is increased to-25 DEG C, make test specimen reach temperature stabilization at this temperature.
(S6) with the speed being no more than 10kPa/min, pressure in chamber is dropped to 60kPa;
(S7) under the storage requirement of the low-temperature and low-pressure of above-mentioned steps S5, S6 adjustment, LED street lamp voltage is regulated to be rated operational voltage, observe sample and whether normally can start work, as test sample no-failure, then keep this temperature and pressure condition continuous firing 8h;
(S8) step S2 to S7 is a test loop, and in repetitive cycling 10 cycle, test completes.
3. method of testing according to claim 1 and 2, is characterized in that: if described chamber is the chamber of forced-air convection type, the Lights section of LED street lamp should back to chamber air outlet.
4. method of testing according to claim 3, is characterized in that: adopt putting of netted spacer layer supports LED street lamp in chamber.
5. method of testing according to claim 2, is characterized in that: in described step S2, adopts and installs thermopair on LED street lamp lamp body, guarantee that sample reaches environment temperature.
6. method of testing according to claim 1, is characterized in that comprising following concrete steps:
(A1) install LED street lamp in low pressure test chamber, in case, LED street lamp sample interlayer is put and gas can be flowed at sample room; Low pressure test chamber meets GB/T2423.1 and tests the test condition specified in Ad and GB/T2423.3;
(A2) humiture in chamber is reached 40 DEG C, 95%RH by the fastest rate temperature change that can regulate according to chamber, makes test sample be issued to temperature stabilization in this humiture;
(A3) at the temperature of above-mentioned steps S2 adjustment and the storage requirement of case humidity, this temperature and humidity condition is kept to continue to expose 4h;
(A4) after continuing to be exposed to 4h, with most rapid rate, the temperature inside the box is down to-25 DEG C immediately, makes test sample reach temperature stabilization at this temperature, now can produce at lamp surface and freeze;
(A5) at the temperature of above-mentioned steps S4 adjustment and the storage requirement of case humidity, light fixture voltage is regulated to be rated operational voltage, observe sample and whether normally can start work, as test specimen no-failure, then keep this temperature and pressure condition continuous firing 4h;
(A6) steps A 2 is a test loop to A5, and in repetitive cycling 6 cycle, test completes.
7. method of testing according to claim 6, is characterized in that: if described chamber is the chamber of forced-air convection type, the Lights section of LED street lamp should back to chamber air outlet.
8. the method for testing according to claim 6 or 7, is characterized in that: adopt putting of netted spacer layer supports LED street lamp in chamber, to avoid causing product local overheating situation.
9. method of testing according to claim 6, is characterized in that: adopt and install thermopair on LED street lamp lamp body, guarantee that sample reaches environment temperature.
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| CN102494708A (en) * | 2011-10-27 | 2012-06-13 | 广州威凯检测技术有限公司 | Method and device for verifying low-temperature test capacity of electric and electronic product |
| US20130127372A1 (en) * | 2011-11-17 | 2013-05-23 | Atlas Materials Testing Technology, Llc | Power supply for xenon lamps in an accelerated weathering test apparatus |
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Application publication date: 20150211 |