CN104183199A - LED display screen - Google Patents
LED display screen Download PDFInfo
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- CN104183199A CN104183199A CN201410443097.3A CN201410443097A CN104183199A CN 104183199 A CN104183199 A CN 104183199A CN 201410443097 A CN201410443097 A CN 201410443097A CN 104183199 A CN104183199 A CN 104183199A
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Abstract
Provided is an LED display screen. A first heat radiating device is arranged in a box body, modules are arranged in a matrix mode on the front end face of the box body, a rear cover is fixed on the rear end face of the box body, a connecting mode of the rear cover and the box body is a detachable connecting mode, heat radiating holes are formed in the rear cover, and the modules comprise face covers, LED lamp plates and module housings. The front sides of the LED lamp plates are LED welding faces, LED light-emitting tubes are welded on the LED welding faces, the back sides of the LED lamp plates are integrated circuit welding faces, and second heat radiating devices are added on the integrated circuit welding faces of the LED lamp plates and are thermo-magnetic heat radiators. The LED display screen has the advantages of being light in weight, low in cost, good in heat radiating effect, stable in light efficiency and power, energy-saving and environment-friendly. In addition, the lumens depreciation of the LED light-emitting tubes is very low, the service life of the LED display screen is prolonged, and fault occurrence probability is reduced.
Description
Technical field
The invention belongs to LED display technical field, relate to the good LED display of a kind of radiating effect.
Background technology
LED is a kind of semiconductor display device not growing up in the sixties, the seventies, along with the progress of semiconductor material synthetic technology, monocrystalline manufacturing technology and P-N knot formation technology, the performances such as the glow color of light emitting diode, brightness are improved and enter rapidly mass and practical production.Enter after the eighties, LED improves greatly in emission wavelength scope and aspect of performance, and to start to form flat panel display product be LED display.The late nineteen eighties, LED display was the novel information display media developing rapidly in the whole world,, long service life high with reliability, the feature such as adaptive capacity to environment is strong, cost performance is high, use cost is low, in short decades, shoot up as the main product of flat pannel display, and be widely used in a plurality of fields such as industry, traffic, market, sports tournament.
Along with the use on a large scale of LED display, product quality is uneven, occurs problems.New Year's Day in 2011, the LED display of Zhejiang Province's JiaoTong Building is on fire suddenly; In October, 2012, the unexpected breaking out of fire of LED giant-screen on Zhujiang New City flower city square, Guangzhou; Outside, Kai De shopping center, Western Central Plaza, Xizhimen LED display is on fire; The LED ad display screen breaking out of fire that Nanjing Qinhuai District in 2012 is one more than 100 square metre; In the end of the year 2013, Guangzhou's Baiyun International Airport LED display is on fire, suffers heavy losses; In February, 2014, the LED display in the venue of WCBA Beijing burns out smolders.
The quality of LED display causes the extensive concern of industry again, how effectively to avoid LED display on fire, improves Product Safety and this problem of stability, and pendulum is in face of all LED display suppliers.Analyze reason, mainly because power lead is aging, product quality problem, heat dissipation problem, later maintenance cause not in time, wherein heat dissipation problem is topmost reason, existing LED display major part is all to adopt fan or Aluminium Radiator heat radiation, fan itself can produce certain power consumption and heat, and the cost of raw material of Aluminium Radiator, maintenance cost are large, radiating effect is not very desirable, easily breaks down.
Summary of the invention
The present invention is in order to overcome the defect of prior art, designed a kind of LED display, have lightweight, cost is low, good heat dissipation effect, optical efficiency and power is relatively stable, the feature of energy-conserving and environment-protective, and the light decay of LED luminotron is very little, extend the serviceable life of LED display, reduced the Probability of fault.
The concrete technical scheme that the present invention takes is: a kind of LED display, comprise casing, module, power supply, control enclosure, module, power supply, control enclosure is all fixedly connected with casing, in casing, be provided with the first heat abstractor, module becomes matrix form to arrange at the front end face of casing, on the rear end face of casing, be fixed with bonnet, bonnet is detachable connection with the connected mode between casing, on bonnet, offer louvre, module comprises face shield, LED lamp plate, formwork, the front of LED lamp plate is LED face of weld, on LED face of weld, be welded with LED luminotron, the back side of LED lamp plate is integrated circuit face of weld, on integrated circuit face of weld, be welded with integrated circuit, power input, signal input part, power input is connected with power supply, signal input part is connected with the output terminal of control enclosure, key is: on the integrated circuit face of weld of LED lamp plate, set up the second heat abstractor, the second heat abstractor is thermal magnon heating radiator.
The second described heat abstractor is the thermal magnon heating radiator of the stratiform made by pyromagnetic working material, and the thickness of the second heat abstractor is 0.1～0.2mm.
The first described heat abstractor is also the thermal magnon heating radiator of the stratiform made by pyromagnetic working material, and the first heat abstractor is arranged on the inside surface of bonnet, and the thickness of the first heat abstractor is 0.1～0.2mm.
The output voltage of described power supply is 3.3V DC voltage.
Described louvre place is provided with rain-proof eaves.
The invention has the beneficial effects as follows: on the integrated circuit face of weld of LED lamp plate, set up thermal magnon heating radiator as the second heat abstractor, pyromagnetic working material belongs to dynamic heat radiation classification, very strong with the exchange capacity of cold air, radiating effect is well more a lot of than common copper radiator, Aluminium Radiator and fan, average every watt of power consumption only needs the pyromagnetic working material of 8～20g, is only equivalent to 1/5～1/10 of Aluminium Radiator, and weight is lighter, carbon emission amount in material manufacture process is lower, energy-conserving and environment-protective.Thermal magnon heating radiator is except having the feature of rapid heat dissipation of aluminium alloy, also there is phonon feature, under thermal motion state, can produce sinusoidal wave concussion, thereby generation heat radiation, further improved radiating effect, so hot weather thermal magnon heating radiator can externally dispel the heat by the radiating mode of phonon, with the heat dissipation characteristics that guarantees that LED display is good, extend its serviceable life.In addition, dissipation of heat in casing out after, under the effect of thermal magnon heating radiator, in casing, can form the thermal field air-flow along heat propagation direction transverse shifting, in each louvre position, can produce the spirality thermal field air-flow of rotation, heat interchanging area and heat exchange efficiency that this has just strengthened thermal field and cold air, further improved heat transfer effect.
Because lighting rear chip temperature at every turn, LED all can experience once process from low to high, and the luminescence efficiency of LED chip raises with the temperature of chip and reduces, the operating voltage of LED chip also reduces with the temperature rising of chip, so optical efficiency and power after LED lights all reduce with the rising of temperature at every turn.Common Aluminium Radiator temperature rise is very high, the optical efficiency of LED and power reduce a lot, and the temperature rise of thermal magnon heating radiator is very low, general control is at 5～15 ℃, lower 25～30 ℃ than common Aluminium Radiator, so optical efficiency and power are relatively stable, make the light decay of LED luminotron very little simultaneously, greatly extended the serviceable life of LED display.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In accompanying drawing, 1 represents casing, and 2 represent module, and 3 represent bonnet, and 4 represent rain-proof eaves.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
Embodiment 1, different from the existing LED display of dispelling the heat with fan is to set up the second heat abstractor on the integrated circuit face of weld of LED lamp plate, the second heat abstractor is the thermal magnon heating radiator of the stratiform made by pyromagnetic working material, the thickness of the second heat abstractor is 0.1～0.2mm, the radiating effect of thermal magnon heating radiator is than common copper radiator, Aluminium Radiator and fan are well a lot, average every watt of power consumption only needs the pyromagnetic working material of 8～20g, only be equivalent to 1/5～1/10 of Aluminium Radiator, weight is lighter, carbon emission amount in material manufacture process is lower, energy-conserving and environment-protective, improved the radiating effect of LED display simultaneously, extended the serviceable life of LED display.
Provide three groups of asynchronous experimental datas of power below, in the power of the existing LED display of dispelling the heat with fan in every group and embodiment 1, the power of display screen equates, after lighting same time, measures the temperature in casing, and the data obtained is as shown in table 1:
Table 1
Known by the data in table 1, when power is identical, in embodiment 1, the interior temperature of the casing of display screen is lower than temperature in the casing of the existing LED display of dispelling the heat with fan, the mean value that temperature reduces number percent is 5.45%, so the radiating effect of display screen is better in embodiment 1, the temperature in casing 1 is lower, so optical efficiency and power are relatively stable, make the light decay of LED luminotron very little simultaneously, greatly extended the serviceable life of LED display.
Embodiment 2, different from the existing LED display of dispelling the heat with fan be that the first heat abstractor is not fan but the thermal magnon heating radiator made by pyromagnetic working material, the first heat abstractor is arranged on the inside surface of bonnet 3, and the thickness of the first heat abstractor is 0.1～0.2mm.Compare with fan, itself can not produce power consumption and heat pyromagnetic working material, saved energy, compare with Aluminium Radiator, average every watt of power consumption only needs the pyromagnetic working material of 8～20g, is only equivalent to 1/5～1/10 of Aluminium Radiator, the cost of pyromagnetic working material is more lower slightly than the cost of common aluminium, possessed again feature lightweight, that consumptive material is few, working (machining) efficiency is high, therefore, the total cost of LED display reduces greatly simultaneously.In addition, and dispel the heat and compare with fan, alleviated the weight of LED display.
Provide three groups of asynchronous experimental datas of power below, in the power of the existing LED display of dispelling the heat with fan in every group and embodiment 2, the power of display screen equates, after lighting same time, measures the temperature in casing, and the data obtained is as shown in table 2:
Table 2
Known by the data in table 2, when power is identical, in embodiment 2, the interior temperature of casing 1 of display screen is lower than temperature in the casing of the existing LED display of dispelling the heat with fan, the mean value that temperature reduces number percent is 7.56%, so the radiating effect of display screen is better in embodiment 2, the temperature in casing 1 is lower, so optical efficiency and power are relatively stable, make the light decay of LED luminotron very little simultaneously, greatly extended the serviceable life of LED display.
Embodiment 3, different from the existing LED display of dispelling the heat with fan be that the first heat abstractor is not fan, but the thermal magnon heating radiator of the stratiform of being made by pyromagnetic working material, the first heat abstractor is arranged on the inside surface of bonnet 3, and the thickness of the first heat abstractor is 0.1～0.2mm; Meanwhile, on the integrated circuit face of weld of LED lamp plate, set up the second heat abstractor, the second heat abstractor is the stratiform thermal magnon heating radiator that the thickness made by pyromagnetic working material is 0.1～0.2mm.
As shown in Figure 1, a kind of LED display, comprise casing 1, module 2, power supply, control enclosure, module 2, power supply, control enclosure are all fixedly connected with casing 1, power supply is for exchanging the stabilized voltage supply that turns direct current, this electrical source power factor is greater than 0.95, overall efficiency is greater than 0.85, and the output voltage of power supply is 3.3V DC voltage, can reduce well the power consumption that LED display is unnecessary, thereby reach the object of energy-saving and emission-reduction, reduce the unnecessary power consumption of power supply itself, reduced the secondary step-down of power supply, reduced cost, improved efficiency, energy-conserving and environment-protective.Module 2 becomes matrix form to arrange at the front end face of casing 1, on the rear end face of casing 1, be fixed with bonnet 3, bonnet 3 is detachable connection with the connected mode between casing 1, in casing 1, be provided with the first heat abstractor, the first heat abstractor is not fan, but the thermal magnon heating radiator of the stratiform of being made by pyromagnetic working material, the first heat abstractor is arranged on the inside surface of bonnet 3, the thickness of the first heat abstractor is 0.1～0.2mm, on bonnet 3, offer louvre, louvre place is provided with rain-proof eaves 4, can prevent that rainwater from entering casing 1 inside by louvre, prevent module 2, power supply, control enclosure is corroded by rainwater, extend the serviceable life of LED display.
Module 2 comprises face shield, LED lamp plate, formwork, LED lamp plate and face shield, formwork is fixed by screw, the front of LED lamp plate is LED face of weld, on LED face of weld, be welded with LED luminotron, the back side of LED lamp plate is integrated circuit face of weld, on integrated circuit face of weld, be welded with integrated circuit, power input, signal input part, power input is connected with power supply, signal input part is connected with the output terminal of control enclosure, the input end of control enclosure can pass through netting twine, RS232, GPRS, 3G and computing machine communicate, by formwork, in the area of space that the front of LED lamp plate and face shield form, be provided with the two component casting glues of OPT314 with safeguard function, between formwork and casing 1, there is waterproof apron, formwork is fixedly connected with by screw with casing 1, the arranging of casting glue and waterproof apron can prevent that rainwater from entering in formwork and make LED integrated circuit and the corrosion of LED luminotron, can extend the serviceable life of LED lamp plate.
On the integrated circuit face of weld of LED lamp plate, set up the second heat abstractor, the second heat abstractor is the stratiform thermal magnon heating radiator that the thickness made by pyromagnetic working material is 0.1～0.2mm, average every watt of power consumption only needs the pyromagnetic working material of 8～20g, only be equivalent to 1/5～1/10 of Aluminium Radiator, lightweight, carbon emission amount in material manufacture process is low, energy-conserving and environment-protective.Thermal magnon spreader surface adopts electrostatic plastics-spraying technology to process, thermal magnon heating radiator relies on spiral helicine thermal field air-flow to dispel the heat, just as electrostatic plastic spraying can not affect magnetic field, electrostatic plastic spraying also can not affect the generation of thermal field and flow, and can utilize on the contrary the feature that electrostatic plastic spraying emissivity is high to improve radiating effect.For example, when the temperature of the thermal magnon heating radiator of naked leakage is 45 ℃, after using electrostatic plastics-spraying technology to process, the temperature of thermal magnon heating radiator can be reduced to 41 ℃, has further improved radiating effect.
Provide three groups of asynchronous experimental datas of power below, in the power of the existing LED display of dispelling the heat with fan in every group and embodiment 3, the power of display screen equates, after lighting same time, measures the temperature in casing 1, and the data obtained is as shown in table 3:
Table 3
Known by the data in table 3, when power is identical, in embodiment 3, the interior temperature of casing 1 of display screen is lower than the interior temperature of casing 1 of the existing LED display with fan cooling, the mean value that temperature reduces number percent is 12.84%, so the radiating effect of display screen is better in embodiment 3, the temperature in casing 1 is lower, so optical efficiency and power are relatively stable, make the light decay of LED luminotron very little simultaneously, greatly extended the serviceable life of LED display.
In sum, experimental data in table 1 and table 2 is known, in embodiment 1, the mean value of the temperature of display screen reduction number percent is 5.45%, in embodiment 2, to reduce the mean value of number percent be 7.56% to the temperature of display screen, so the radiating effect of display screen is better than the radiating effect of display screen in embodiment 1 in embodiment 2; Experimental data in table 2 and table 3 is known, in embodiment 2, the mean value of the temperature of display screen reduction number percent is 7.56%, in embodiment 3, the mean value of the temperature of display screen reduction number percent is 12.84%, so the radiating effect of display screen is better than the radiating effect of display screen in embodiment 2 in embodiment 3, so embodiment 3 is optimal case of the present invention, in embodiment 3, the optical efficiency of LED display and power are the most stable, make the light decay of LED luminotron minimum, the serviceable life of LED display is the longest simultaneously.
Claims (5)
1. a LED display, comprise casing (1), module (2), power supply, control enclosure, module (2), power supply, control enclosure is all fixedly connected with casing (1), casing is provided with the first heat abstractor in (1), module (2) becomes matrix form to arrange at the front end face of casing (1), on the rear end face of casing (1), be fixed with bonnet (3), bonnet (3) is detachable connection with the connected mode between casing (1), bonnet offers louvre on (3), module (2) comprises face shield, LED lamp plate, formwork, the front of LED lamp plate is LED face of weld, on LED face of weld, be welded with LED luminotron, the back side of LED lamp plate is integrated circuit face of weld, on integrated circuit face of weld, be welded with integrated circuit, power input, signal input part, power input is connected with power supply, signal input part is connected with the output terminal of control enclosure, it is characterized in that: on the integrated circuit face of weld of LED lamp plate, set up the second heat abstractor, the second heat abstractor is thermal magnon heating radiator.
2. a kind of LED display according to claim 1, is characterized in that: the second described heat abstractor is the thermal magnon heating radiator of the stratiform made by pyromagnetic working material, and the thickness of the second heat abstractor is 0.1～0.2mm.
3. a kind of LED display according to claim 1, it is characterized in that: the first described heat abstractor is also the thermal magnon heating radiator of the stratiform made by pyromagnetic working material, the first heat abstractor is arranged on the inside surface of bonnet (3), and the thickness of the first heat abstractor is 0.1～0.2mm.
4. a kind of LED display according to claim 1, is characterized in that: the output voltage of described power supply is 3.3V DC voltage.
5. a kind of LED display according to claim 1, is characterized in that: described louvre place is provided with rain-proof eaves (4).
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| CN201410443097.3A CN104183199A (en) | 2014-09-03 | 2014-09-03 | LED display screen |
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| CN201410443097.3A CN104183199A (en) | 2014-09-03 | 2014-09-03 | LED display screen |
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Cited By (2)
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| CN106455449A (en) * | 2016-11-16 | 2017-02-22 | 上海启钧电子有限公司 | Outdoor electronic equipment |
| CN108364580A (en) * | 2018-02-24 | 2018-08-03 | 深圳市豪胜电子有限公司 | The display device for mounting on vehicle that high definition is energy saving and structure is frivolous |
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Application publication date: 20141203 |