CN201273934Y - Portable LED heat resistance test apparatus - Google Patents
Portable LED heat resistance test apparatus Download PDFInfo
- Publication number
- CN201273934Y CN201273934Y CN 200820151973 CN200820151973U CN201273934Y CN 201273934 Y CN201273934 Y CN 201273934Y CN 200820151973 CN200820151973 CN 200820151973 CN 200820151973 U CN200820151973 U CN 200820151973U CN 201273934 Y CN201273934 Y CN 201273934Y
- Authority
- CN
- China
- Prior art keywords
- temperature
- led
- heat sink
- thermo
- measurement device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a portable LED thermal resistance testing device. The LED thermal resistance testing device comprises a heating and cooling unit, a temperature measuring unit and a power supply unit which are connected with each other. The portable LED thermal resistance testing device is characterized in that the device also comprises a data acquisition control module which is separately connected with the LED and temperature measuring unit signal. The LED is installed in an enclosed space. The LED thermal resistance testing device can integrate the device into a portable measuring device with compacted structure. The device is suitable for field measurement, and at the same time, the requirements of heating and cooling can be satisfied.
Description
Technical field
The utility model relates to a kind of thermo-resistance measurement device, particularly a kind of novel compact conformation, portable light emitting diode (LED) thermo-resistance measurement device.
Background technology
Advantages such as the semiconductor lighting technology is energy-conservation because of it at present, the life-span is long are widely used.But because light emitting diode (LED) has the electric power that surpasses more than 70% will be converted into heat energy as the light source of light fixture, and the temperature resistant capability of LED device node is poor, therefore when using, LED must consider heat radiation, require the junction temperature of device to be lower than limit value, otherwise can cause LED decrease in efficiency, life-span reduction, photochromic skew, lose efficacy even.Make the application of LED illumination more reliable, should select the device of high-quality for use, comprise its heat resistance characteristic.Also there are not at present maturation, easy LED thermo-resistance measurement device.At first be because its volume is very little, next is that the junction temperature of LED is a temperature inside, can't externally directly measure by survey instrument, the measurement of the complexity of chamber provides a reference value by experiment, needing therefore to demand a kind of LED thermo-resistance measurement device that has compact temperature control module, is fit to in-site measurement urgently.
In addition, obtain to have the LED thermo-resistance measurement fixture of compact temperature control module, suitable in-site measurement, need to solve the problem of two aspects.At first be method of testing,, can't externally directly measure by survey instrument because the junction temperature of LED is a temperature inside.Difficulty on this method of testing is resolved in patent of invention " heat testing method of new LED car light luminous intensity distribution plate " (application number 200510030866.8, publication number CN1955730).
Next is the realization of method of testing.And the core of this method is heat sink temperature control.Specifically generally need be when carrying out thermal resistance measurement to the heat sink operation that in certain temperature range, heats up and lower the temperature.And the mode of heating of conventional resistance wire and liquid cooling can not satisfy the demand that heats up and lower the temperature simultaneously, and be difficult to be integrated into compact measurement mechanism, therefore on existing LED thermo-resistance measurement method basis, demand urgently needing a kind of suitable in-site measurement, compact conformation, promptly have the LED thermo-resistance measurement device of compact temperature control module.
The utility model content
For overcoming the problems referred to above, the purpose of this utility model is to provide a kind of portable LED thermo-resistance measurement device.Portable LED thermo-resistance measurement device of the present utility model can be integrated into this device compact conformation, portable measurement mechanism, and described device is fit to in-site measurement, and can satisfy the demand that heats up and lower the temperature simultaneously.
For achieving the above object, the utility model adopts following technical scheme:
A kind of novel portable LED thermo-resistance measurement device, described LED thermo-resistance measurement device comprises heating cooling unit, temperature measurement unit and the power supply unit that connects each other, it is characterized in that, described device also comprises data acquisition and the control module that is connected with LED and temperature measurement unit signal respectively, and described LED places enclosure space.
Heating cooling unit (temperature control module), the radiating fin of, semiconductor thermoelectric refrigeration sheet heat sink by shrinking neck type, band fan is formed, and its function is to provide uniform baseplate temp for measured device in than large-temperature range.
Temperature measurement unit comprises temperature sensor, platinum resistance and temperature transmitter, is used for measuring heat sink temperature, and temperature information is exported to data acquisition and control module.
Data acquisition and control module control semiconductor chilling plate heats cooling to heat sink.
Power supply unit is realized the switching of working current and little electric current in the method for testing, and the function of powering for thermoelectric module.
According to portable LED thermo-resistance measurement device of the present utility model, it is characterized in that: tested light emitting diode (LED) be positioned over the copper of confined space heat sink on; The heat sink connection with temperature measurement unit to test heat sink temperature T.
Temperature measurement unit connects data acquisition and control module (module) carries out the collection of heat sink temperature data, and light emitting diode (LED) also links to each other with control module with data acquisition on the other hand, to gather the pressure drop U at LED two ends; Data acquisition and control module are handled heat sink temperature T and the LED two ends pressure drop U that collects, and obtain the voltage temperature relation under this temperature.
Data acquisition and control module transfer to power supply unit with signal, and power supply unit removes to control coupled heating cooling unit, thereby change the heat sink temperature that links to each other with the heating cooling unit.The switching of working current and little electric current in the method for testing of power supply unit realization simultaneously, and be the thermoelectric module power supply in the heating cooling unit.
According to portable LED thermo-resistance measurement device of the present utility model, it is characterized in that: heat sink is a shrinking neck type heat conduction block.
Thus, can make the heat sink measured device that can be that uniform baseplate temp is provided.
According to portable LED thermo-resistance measurement device of the present utility model, it is characterized in that: temperature measurement unit 3 is for to be made up of platinum resistance and temperature transmitter.
Temperature measurement unit is used for measuring heat sink temperature, and temperature information is exported to data acquisition and control module 4.
According to portable LED thermo-resistance measurement device of the present utility model, it is characterized in that: the heating cooling unit is made up of semiconductor thermoelectric module and heat radiator with matching, controls semiconductor chilling plate by data acquisition and control module and heats cooling to heat sink; Power supply unit is realized the switching of working current and little electric current in the method for testing, and the function of powering for the semiconductor thermoelectric refrigeration sheet.
The advantage of portable LED thermo-resistance measurement device of the present utility model is: finishes simultaneously heat sink heating and cooling function by thermoelectric module, reduced the test duration, and also the temperature control module compact conformation, reliable operation.The semiconductor thermoelectric refrigeration sheet can be controlled at heat sink temperature below the room temperature simultaneously, therefore can test in more wide scope.Experiment shows, portable LED thermo-resistance measurement device of the present utility model can be at the scene measurement plane pasting type LED thermal resistance easily, the error of measurement is in 5.5%.
Description of drawings
Fig. 1 is a thermo-resistance measurement device temperature control module synoptic diagram of the present utility model,
Fig. 2 is a thermo-resistance measurement principle of device synoptic diagram of the present utility model.
Fig. 3 is the structural representation of thermo-resistance measurement device of the present utility model
Among the figure, 1 is LED in the confined space, and 2 is heat sink, and 3 is temperature measurement unit, 4 are data acquisition and control module, and 5 is power supply unit, and 6 are the heating cooling unit, and 7 is temperature sensor, 8 is thermoelectric module, and 9 is heat radiator, and 10 is cooling fan, and 11 is confined space.
Embodiment
Below in conjunction with the drawings and specific embodiments LED thermo-resistance measurement device of the present utility model is described further.
1 one kinds of thermo-resistance measurement devices that are used for LED of embodiment.
As shown in the figure, described LED thermo-resistance measurement device comprises heat sink 2, temperature measurement unit 3, data acquisition and control module 4, power supply unit 5, heating cooling unit 6.Described temperature measurement unit 3 comprises and connects platinum resistance and temperature transmitter; That described heating cooling unit 6 comprises is heat sink 2, semiconductor thermoelectric module 8 and heat radiator with matching 9.It utilizes heat-conducting silicone grease to make its tight contact each other, and compresses with bolt.
The time pass to the electric current of certain orientation in work, the even heating that thermoelectric module 8 is realized heat sink 2 bottoms by can also realizing the accurate control to heat sink temperature after demarcating, thereby obtains being higher than each temperature spot of environment temperature.
When needs reduced heat sink temperature, the current reversal of thermoelectric module 8 cooled off heat sink 2, heat sink temperature can be controlled under the environment temperature, has enlarged the measurement temperature range.This also is the remarkable advantage that temperature control module is different from other temperature control methods.
Again, in the process of test tested light emitting diode 1 be positioned over confined space 11 copper heat sink 2 on, guaranteeing the temperature homogeneity of device base plate, simultaneously heat sinkly isolate, to get rid of the interference of external environment with external environment heat.When measuring, at first provide little measuring current (less than 1mA) for tested LED by power supply unit 5, data acquisition and control module 4 obtain the magnitude of voltage at 1 two ends, temperature sensor in the temperature measurement unit 3 obtains heat sink 2 temperature, obtains the voltage-temperature relation under this temperature.
Thermo-resistance measurement device of the present utility model is specially adapted to LED.
Claims (5)
1. novel portable LED thermo-resistance measurement device, described LED thermo-resistance measurement device comprises heating cooling unit (6), temperature measurement unit (3) and the power supply unit (5) that connects each other, it is characterized in that, described device also comprises data acquisition and the control module (4) that is connected with LED (1) and temperature measurement unit signal respectively, and described LED places enclosure space.
2. portable LED thermo-resistance measurement device as claimed in claim 1, it is characterized in that, heating cooling unit (6) is made up of heat sink (2), the semiconductor thermoelectric refrigeration sheet (8), the heat radiator (9) that connect successively, and it utilizes heat-conducting silicone grease to make its tight contact each other, and compresses with bolt.
3. portable LED thermo-resistance measurement device as claimed in claim 1 is characterized in that, tested LED (1) is positioned on the copper heat sink (2) of confined space; Heat sink (2) are connected to test heat sink temperature T with temperature measurement unit (3).
4. portable LED thermo-resistance measurement device as claimed in claim 1 is characterized in that heat sink (2) are a shrinking neck type heat conduction block.
5. portable LED thermo-resistance measurement device as claimed in claim 1 is characterized in that temperature measurement unit (3) comprises temperature sensor, platinum resistance and temperature transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820151973 CN201273934Y (en) | 2008-08-15 | 2008-08-15 | Portable LED heat resistance test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820151973 CN201273934Y (en) | 2008-08-15 | 2008-08-15 | Portable LED heat resistance test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273934Y true CN201273934Y (en) | 2009-07-15 |
Family
ID=40884280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820151973 Expired - Lifetime CN201273934Y (en) | 2008-08-15 | 2008-08-15 | Portable LED heat resistance test apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273934Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116829A (en) * | 2010-12-21 | 2011-07-06 | 杭州远方光电信息股份有限公司 | Method and device for measuring thermal resistance of diode |
| CN102252200A (en) * | 2011-07-06 | 2011-11-23 | 卢会水 | Semiconductor refrigeration high-power LED lamp |
| CN103454006A (en) * | 2012-06-05 | 2013-12-18 | 北大方正集团有限公司 | Temperature monitoring circuit for light-emitting diode |
| CN103926517A (en) * | 2014-04-24 | 2014-07-16 | 重庆大学 | Device and method for testing thermal resistance of power type LED |
| CN105277587A (en) * | 2015-06-25 | 2016-01-27 | 西华大学 | Radiation performance tester for metal radiator |
| CN109211963A (en) * | 2017-06-30 | 2019-01-15 | 上海新微技术研发中心有限公司 | System and method for detecting thermal resistance of heat-conducting material |
| CN110857893A (en) * | 2018-08-23 | 2020-03-03 | 比亚迪股份有限公司 | Temperature sensor working threshold detection device |
| CN111693840A (en) * | 2020-06-18 | 2020-09-22 | 山东宝乘电子有限公司 | Method for testing thermal resistance of Schottky diode by utilizing reverse characteristic |
-
2008
- 2008-08-15 CN CN 200820151973 patent/CN201273934Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116829A (en) * | 2010-12-21 | 2011-07-06 | 杭州远方光电信息股份有限公司 | Method and device for measuring thermal resistance of diode |
| CN102252200A (en) * | 2011-07-06 | 2011-11-23 | 卢会水 | Semiconductor refrigeration high-power LED lamp |
| CN103454006A (en) * | 2012-06-05 | 2013-12-18 | 北大方正集团有限公司 | Temperature monitoring circuit for light-emitting diode |
| CN103926517A (en) * | 2014-04-24 | 2014-07-16 | 重庆大学 | Device and method for testing thermal resistance of power type LED |
| CN103926517B (en) * | 2014-04-24 | 2016-08-17 | 重庆大学 | The test device and method of power type LED thermal resistance |
| CN105277587A (en) * | 2015-06-25 | 2016-01-27 | 西华大学 | Radiation performance tester for metal radiator |
| CN105277587B (en) * | 2015-06-25 | 2018-08-21 | 西华大学 | Metal heat sink heat-dissipation performance test device |
| CN109211963A (en) * | 2017-06-30 | 2019-01-15 | 上海新微技术研发中心有限公司 | System and method for detecting thermal resistance of heat-conducting material |
| CN109211963B (en) * | 2017-06-30 | 2021-03-26 | 上海新微技术研发中心有限公司 | System and method for detecting thermal resistance of heat-conducting material |
| CN110857893A (en) * | 2018-08-23 | 2020-03-03 | 比亚迪股份有限公司 | Temperature sensor working threshold detection device |
| CN111693840A (en) * | 2020-06-18 | 2020-09-22 | 山东宝乘电子有限公司 | Method for testing thermal resistance of Schottky diode by utilizing reverse characteristic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201273934Y (en) | Portable LED heat resistance test apparatus | |
| CN103162856B (en) | A kind of contactless great power LED method for testing junction temperature | |
| CN201851958U (en) | LED (light-emitting diode) lamp capable of emitting light steadily | |
| CN105203940B (en) | A kind of thermoelectric element reliability evaluation system and method | |
| CN110426380B (en) | Transmission-type temperature-controllable testing device for laser-excited remote fluorescent material | |
| CN102221667B (en) | Measuring apparatus and method for diode chip | |
| CN101463984A (en) | Illuminating apparatus | |
| CN104748885A (en) | Method for measuring LED (Light Emitting Diode) junction temperature based on I-V feature curve | |
| TWI392882B (en) | Apparatus and method for measuring diode chip | |
| CN107544333A (en) | A kind of automation data intelligent monitor system based on mobile internet-of-things terminal | |
| CN107727951A (en) | A kind of thermo-electric generation monomer module thermoelectricity capability test table | |
| CN207007473U (en) | Semiconductor laser fiber coupling module test system | |
| CN202868371U (en) | Intelligent semiconductor heat dissipation light-emitting diode (LED) lamp | |
| CN105388181A (en) | Thermal resistance measurement sensor system | |
| CN102878455B (en) | Intelligent semiconductor heat radiating LED (light-emitting diode) lamp | |
| CN104807851A (en) | Point-to-point method and equipment for detecting coefficients of heat conductivity and heat dissipation of standard sample | |
| CN210532254U (en) | Solar intelligent street lamp | |
| CN207422161U (en) | A kind of automation data intelligent monitor system | |
| CN209640269U (en) | LED street lamp radiator thermo-resistance measurement heating module | |
| CN105021291B (en) | LED module calorifics interface measuring system and its measuring method | |
| CN208044433U (en) | A kind of integration test heat preservation module | |
| CN202868631U (en) | Radiator of light-emitting diode (LED) lighting set | |
| CN207504916U (en) | A kind of Internet of Things automated data intelligent monitor system | |
| CN204964034U (en) | LED module calorifics interface measurement system | |
| CN109282519A (en) | Heat transmits reversible mini thermoelectric heat refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090715 |