CN204300786U - A kind of cold ground LED with heating and heat radiation dual-use function - Google Patents
A kind of cold ground LED with heating and heat radiation dual-use function Download PDFInfo
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- CN204300786U CN204300786U CN201520002285.2U CN201520002285U CN204300786U CN 204300786 U CN204300786 U CN 204300786U CN 201520002285 U CN201520002285 U CN 201520002285U CN 204300786 U CN204300786 U CN 204300786U
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Abstract
一种具有加热与散热双重功能的寒地LED灯，涉及一种适用于高寒地区的LED灯，本实用新型为解决现有LED灯无法在高寒地区进行低温启动、驱动电源和半导体发光元件散热能力差的问题。本实用新型所述具有加热与散热双重功能的寒地LED灯，它包括驱动电源、半导体发光元件和散热片，驱动电源为半导体发光元件提供启动电压或稳定工作电压，散热片和驱动电源均安装在半导体发光元件的底座上，它还包括石墨膜，石墨膜覆在半导体发光元件的底座上，且位于半导体发光元件的底座和散热片之间；它还包括温控开关电路和加热驱动电路，温控开关电路包括温度传感器、A/D转换电路和温控开关；本实用新型应用于高寒地区。
A cold-region LED lamp with dual functions of heating and heat dissipation relates to an LED lamp suitable for high-cold regions. The utility model aims to solve the problem that the existing LED lamps cannot be started at low temperatures in high-cold regions, and the driving power and heat dissipation capabilities of semiconductor light-emitting elements bad question. The cold LED lamp with dual functions of heating and heat dissipation described in the utility model includes a driving power supply, a semiconductor light-emitting element and a heat sink, and the driving power provides a starting voltage or a stable working voltage for the semiconductor light-emitting element. On the base of the semiconductor light emitting element, it also includes a graphite film, the graphite film is covered on the base of the semiconductor light emitting element, and is located between the base of the semiconductor light emitting element and the heat sink; it also includes a temperature control switch circuit and a heating drive circuit, The temperature control switch circuit includes a temperature sensor, an A/D conversion circuit and a temperature control switch; the utility model is used in alpine regions.
Description
Technical field
The utility model relates to a kind of LED being applicable to extremely frigid zones.
Background technology
LED has the many merits such as life-span long, energy-efficient, environmental protection due to it, becomes the optimal selection of alternative conventional light source.LED is made up of semiconductor light-emitting elements and driving power, wherein the on state characteristic of semiconductor light-emitting elements and operating ambient temperature closely related.Temperature can affect barrier parameters between its dissufion current, conductive electric current, knot, and then affect its conducting, angle of cut-off, temperature waft coefficient, main material ingredient due to the semiconductor element of Circuits System is silicon, silicon all cannot normally work at low temperature (generally below-25 DEG C) and high temperature (generally more than 50 DEG C), so LED cannot normally work under the low temperature environment on cold ground at present.
Due to LED operationally, usually only have the electric energy conversion of 15%-25% to be luminous energy, all the other energy of 75% ~ 85% mainly with the form of lattice vibration transform heat energy.Semiconductor light-emitting elements mainly relies on driving power to power, and the operating ambient temperature of existing driving power is-25 DEG C to 50 DEG C, and under psychro-environment, and driving power and semiconductor light-emitting elements cannot normal start-up and operations; Meanwhile, driving power and semiconductor light-emitting elements operationally will produce a large amount of heat, and heat accumulation is too high, directly affects the normal work and use life-span of LED.
Therefore at extremely frigid zones, solve LED and start fast under low-temperature working environment, and heat radiation in the course of the work ensures the key normal using, extend LED service life, reduce light decay.
Graphite film is a kind of Novel heat-conducting heat sink material, and its heat conduction and heat radiation effect clearly.
Utility model content
The utility model object is the problem cannot carrying out cold-starting, driving power and semiconductor light-emitting elements heat-sinking capability difference in order to solve existing LED at extremely frigid zones, provides a kind of cold ground LED with heating and heat radiation dual-use function.
A kind of cold ground LED with heating and heat radiation dual-use function described in the utility model, it comprises driving power, semiconductor light-emitting elements and fin, driving power provides starting resistor or stable operating voltage for semiconductor light-emitting elements, fin and driving power are installed on the base of semiconductor light-emitting elements, it also comprises graphite film, graphite film overlays on the base of semiconductor light-emitting elements, and between the base and fin of semiconductor light-emitting elements;
It also comprises temperature switch circuit and heat driven circuit, and temperature switch circuit comprises temperature sensor, A/D change-over circuit and temperature detect switch (TDS); Temperature sensor is arranged on outside graphite film, temperature sensor exports the temperature signal collected to A/D change-over circuit, temperature detect switch (TDS) is exported to after A/D conversion, temperature detect switch (TDS) produces on-off model and exports heat driven circuit to, and heat driven circuit drives driving power heats or stop heating to graphite film.
Advantage of the present utility model: the utility model using mineral carbon film solves that LED in prior art cannot start at extremely frigid zones, the problem of driving power and semiconductor light-emitting elements heat-sinking capability difference, graphite film is overlayed on driving power and semiconductor light-emitting elements, graphite film can produce heat under supply voltage, is heated to the operating temperature that can normally run to fast driving power and semiconductor light-emitting elements.Localized hyperthermia can be uniformly transferred to whole fin area rapidly in the LED course of work simultaneously, and then realize LED and normally run fast, in LED normal course of operation, driving power and semiconductor light-emitting elements are dispelled the heat simultaneously, extend the service life of LED.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation with the cold ground LED of heating and heat radiation dual-use function described in the utility model;
Fig. 2 is a kind of control principle drawing with the cold ground LED of heating and heat radiation dual-use function described in the utility model.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, a kind of cold ground LED with heating and heat radiation dual-use function described in present embodiment, it comprises driving power 1, semiconductor light-emitting elements 2 and fin 3, driving power 1 provides starting resistor or stable operating voltage for semiconductor light-emitting elements 2, fin 3 and driving power 1 are installed on the base of semiconductor light-emitting elements 2, it also comprises graphite film 4, graphite film 4 overlays on the base of semiconductor light-emitting elements 2, and between the base and fin 3 of semiconductor light-emitting elements 2;
It also comprises temperature switch circuit and heat driven circuit 5, and temperature switch circuit comprises temperature sensor 6, A/D change-over circuit 8 and temperature detect switch (TDS) 7; Temperature sensor 6 is arranged on outside graphite film 4, temperature sensor 6 exports the temperature signal collected to A/D change-over circuit 8, temperature detect switch (TDS) 7 is exported to after A/D conversion, temperature detect switch (TDS) 7 produces on-off model and exports heat driven circuit 5 to, and heat driven circuit 5 drives driving power 1 pair of graphite film 4 to heat or stop heating.
The difference of detailed description of the invention two, this detailed description of the invention and detailed description of the invention one is, the thickness of graphite film 4 is 20 μm to 1500 μm.
Present embodiment preferably 20 μm to 1500 μm, with 100 μm for optimum value, through great many of experiments statistics, under this one-tenth-value thickness 1/10, the heat-conducting effect of graphite film 4 is best, and has elasticity packing space effect.
The difference of detailed description of the invention three, this detailed description of the invention and detailed description of the invention one is, semiconductor light-emitting elements 2 is PN junctions.
The difference of detailed description of the invention four, this detailed description of the invention and detailed description of the invention one is, it also comprises wireless signal transmitting device and wireless signal receiver, and the wireless signal output of described wireless signal receiver is connected with the wireless signal input of temperature detect switch (TDS) 7; The wireless signal that described wireless signal receiver is launched for receiving wireless signal transmitting device.
Present embodiment, after LED starts, adopts wireless signal transmitting device remote controller to send stopping heating signal, stops heating graphite film 4.
The difference of detailed description of the invention five, this detailed description of the invention and detailed description of the invention four is, wireless signal transmitting device is infrared signal emitter; Wireless signal receiver is infrared signal receiving apparatus.
The difference of detailed description of the invention six, this detailed description of the invention and detailed description of the invention four is, wireless signal transmitting device is Bluetooth signal emitter; Wireless signal receiver is Bluetooth signal receiving system.
Claims (3)
1. one kind has the cold ground LED of heating and heat radiation dual-use function, it comprises driving power (1), semiconductor light-emitting elements (2) and fin (3), driving power (1) provides starting resistor or stable operating voltage for semiconductor light-emitting elements (2), and fin (3) and driving power (1) are installed on the base of semiconductor light-emitting elements (2);
It is characterized in that, it also comprises graphite film (4), and graphite film (4) overlays on the base of semiconductor light-emitting elements (2), and is positioned between the base of semiconductor light-emitting elements (2) and fin (3);
It also comprises temperature switch circuit and heat driven circuit (5), and temperature switch circuit comprises temperature sensor (6), A/D change-over circuit (8) and temperature detect switch (TDS) (7); Temperature sensor (6) is arranged on graphite film (4) outside, temperature sensor (6) exports the temperature signal collected to A/D change-over circuit (8), temperature detect switch (TDS) (7) is exported to after A/D conversion, temperature detect switch (TDS) (7) produces on-off model and exports heat driven circuit (5) to, and heat driven circuit (5) drives driving power (1) to heat or stop heating to graphite film (4).
2. a kind of cold ground LED with heating and heat radiation dual-use function according to claim 1, it is characterized in that, the thickness of graphite film (4) is 20 μm to 1500 μm.
3. a kind of cold ground LED with heating and heat radiation dual-use function according to claim 1, it is characterized in that, semiconductor light-emitting elements (2) is PN junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002285.2U CN204300786U (en) | 2015-01-04 | 2015-01-04 | A kind of cold ground LED with heating and heat radiation dual-use function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002285.2U CN204300786U (en) | 2015-01-04 | 2015-01-04 | A kind of cold ground LED with heating and heat radiation dual-use function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204300786U true CN204300786U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520002285.2U Expired - Fee Related CN204300786U (en) | 2015-01-04 | 2015-01-04 | A kind of cold ground LED with heating and heat radiation dual-use function |
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| Country | Link |
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| CN (1) | CN204300786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698038A (en) * | 2016-12-09 | 2017-05-24 | 浙江三维橡胶制品股份有限公司 | Traction machine provided with safety protection fences and used for production of rubber conveying belt |
| CN108649414A (en) * | 2018-05-16 | 2018-10-12 | 青岛海信宽带多媒体技术有限公司 | Laser module and optical module |
-
2015
- 2015-01-04 CN CN201520002285.2U patent/CN204300786U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698038A (en) * | 2016-12-09 | 2017-05-24 | 浙江三维橡胶制品股份有限公司 | Traction machine provided with safety protection fences and used for production of rubber conveying belt |
| CN108649414A (en) * | 2018-05-16 | 2018-10-12 | 青岛海信宽带多媒体技术有限公司 | Laser module and optical module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 |