CN202001932U - Light-emitting diode (LED) street lamp of high luminous efficiency and high color-rendering property - Google Patents

Light-emitting diode (LED) street lamp of high luminous efficiency and high color-rendering property Download PDF

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Publication number
CN202001932U
CN202001932U CN2010206575847U CN201020657584U CN202001932U CN 202001932 U CN202001932 U CN 202001932U CN 2010206575847 U CN2010206575847 U CN 2010206575847U CN 201020657584 U CN201020657584 U CN 201020657584U CN 202001932 U CN202001932 U CN 202001932U
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CN
China
Prior art keywords
led
street lamp
led chip
heat sink
rgb
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Expired - Fee Related
Application number
CN2010206575847U
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Chinese (zh)
Inventor
刘东芳
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HEYUAN CHIUYUE OPTOELECTRONICS TECHNOLOGY Co Ltd
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HEYUAN CHIUYUE OPTOELECTRONICS TECHNOLOGY Co Ltd
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Priority to CN2010206575847U priority Critical patent/CN202001932U/en
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Publication of CN202001932U publication Critical patent/CN202001932U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

Abstract

The utility model discloses a light-emitting diode (LED) street lamp of high luminous efficiency and a high color-rendering property, which comprises a lamp casing (1). One side of the lamp casing (1) is provided with an installment tube (6), the inside of the lamp casing (1) is provided with a driving power supply, the lamp casing (1) is provided with a metal radiation element (2), the front face of the metal radiation element (2) is provided with a circuit layer and a plurality of arc grooves (4), each of the arc grooves (4) is provided with red green blue (RGB) three-primary-color LED chips (3), the two sides of each arc groove (4) of the metal radiation element (2) are provided with LED chip welding points (5) which are electrically connected with the circuit layer, and the LED chip welding points are electrically connected with the two electrodes of each RGB three-primary-color LED chip through wires. The LED street lamp seals the RGB three-primary-color LED chips into the metal radiation element to form a solidified body of the LED and the metal radiation element, shorten radiation routes of the LED street lamp and improve the luminous efficiency and the color-rendering property of the LED.

Description

The LED street lamp of high light efficiency and high-color rendering
Technical field
The utility model belongs to the technical field of lighting, specifically is meant the LED street lamp of a kind of high light efficiency and high-color rendering.
Background technology
At present, because led light source has advantages such as energy-saving and environmental protection, longevity, therefore be widely used in outdoor illumination field, especially for the bigger street lamp of electric consumption on lighting proportion.
In the market on the substrate (as aluminium base) of the most weld metal material of the LED of all LED street lamps.The heat radiation approach of whole street lamp: outside LED → pcb board (aluminium base) → thermal conductive insulation glue → metal shell → lamp body, though metal substrates such as aluminium base have very good heat conductivility and high-intensity electrical insulation properties, but the heat radiation approach is oversize, the heat that LED produces is difficult for getting rid of, cause the LED junction temperature to raise, the rising of LED junction temperature can make transistorized current amplification factor increase sharply, cause collector current to increase, junction temperature is further raise, finally cause the LED light efficiency to descend until inefficacy.In addition, the LED street lamp is under the high temperature work for a long time, can cause bad phenomenon such as insulating properties degeneration, components and parts damage, the heat ageing of material, low melting point weld cracking, the solder joint of street lamp come off.
In addition, the Heat Conduction Material that in heat radiation, adopts, a lot of LED manufacturers still use heat-conducting silicone grease as the heat conduction packing material always.The heat-conducting silicone grease that adopts is as the heat conduction packing material, it is along with the light fixture working time prolongs, and the main component silicone oil volatilization slowly of the inside becomes dry to the end, its heat conductivility will reduce greatly, has dispelled the heat affecting the normal of light fixture. and at this moment the life-span of light fixture is also and then influenced.
Radiating treatment has become one of vital challenge in the design of LED street lamp, promptly tighten at framework, under the more and more littler situation in operating space, how to solve the heat radiation of LED, the heat that PN junction is produced can distribute as soon as possible, not only can improve the luminous efficiency of product, also improve reliability of products and life-span simultaneously.In view of LED to the having relatively high expectations of radiating condition, the limit value if the PN junction junction temperature is above standard, LED will aggravate light decay, reduces luminous efficiency, even quits work.So, improve the light efficiency of LED street lamp, in fact just need to solve the heat dissipation problem of LED.
In addition, the preparation method of white light LEDs main flow is that blue-light LED chip excites the YAG:Ce3+ yellow fluorescent powder.Can obtain the higher white light of luminous flux and luminous efficiency.Shortcoming is the white light that is difficult to obtain low colour temperature high-color rendering, owing to lack the ruddiness composition in the spectrum, so colour temperature height and colour rendering is poor.At present, the scheme that blue-light LED chip and YAG:Ce3+ yellow fluorescent powder mix is difficult to be implemented in 4, low colour temperature and Ra that 000K is following〉white light of 80 high-color renderings.The color drift of great power LED is not only by the aging institute of fluorescent material and is caused that main factor is the variation of material itself.Encapsulating material (as silica gel etc.) aging easily under the irradiation of ultraviolet light, the lost of life can cause the color drift of LED serious.Do not hinder eyes for the LED lamp is sent, give the comfortable warm white light of human eye perceives, just need to improve the LED colour rendering.
The utility model content
The purpose of this utility model is to provide an a kind of difficult problem of the LED of solution heat radiation, shortens the heat radiation approach of LED, makes the light efficiency of LED and the LED street lamp that colour rendering improves.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the LED street lamp of high light efficiency and high-color rendering, comprise lamp housing, one side of lamp housing is provided with mounting pipe, be provided with driving power in the lamp housing, lamp housing is provided with metal heat sink, the front of described metal heat sink is provided with line layer, the front of metal heat sink is provided with several circular grooves, be provided with RGB three-primary color LED chip in the described circular groove, metal heat sink is provided with the led chip solder joint that is electrically connected with line layer in the both sides of each circular groove, the led chip solder joint is electrically connected by lead the two poles of the earth with RGB three-primary color LED chip.
Be filled with thermal conductive insulation glue between described RGB three-primary color LED chip and the circular groove.
Described metal heat sink is four, is distributed on the metal heat sink.
Described driving power is a constant-current driving power supply.
Owing to adopted above-mentioned structure, LED street lamp of the present utility model is encapsulated into RGB three-primary color LED chip in the metal heat sink, forms LED and metal heat sink firming body, and it has following beneficial effect:
(1), directly is encapsulated on " metal heat sink " owing to " RGB three-primary color LED chip ", take the vertical, horizontal radiating treatment, area of dissipation increases, and can effectively solve the drawback of the heat radiation difficulty of LED existence, junction temperature when having effectively reduced LED work avoids causing the irreversibility light decay;
(2), aspect the production of LED street lamp, because " RGB three-primary color LED chip " is potted directly on " metal heat sink ", can save raw material such as aluminium base and heat-conducting silicone grease, in the production of LED street lamp, reduce by three road manufacturing procedures at least simultaneously, be suitable for the LED street lamp and produce in batches;
(3), add the fluorescent material technology with traditional blue light and compare, adopt " RGB three-primary color LED chip " to be potted directly on " metal heat sink ", its light efficiency height, the colour rendering index height, light decay is low;
(4), adding the fluorescent material technology with traditional blue light compares, adopt " RGB three-primary color LED chip " to be potted directly on " metal heat sink ", owing to do not need encapsulating materials such as fluorescent material, bad problems such as encapsulating material such as fluorescent material is aging can not occur, can solve the problem of colour temperature drift effectively;
(5), since " RGB three-primary color LED chip " be potted directly on " metal heat sink ", the LED street lamp reaches 80000 hours service life, is more than 10 times of high-pressure mercury lamp;
(5), LED is cold light source, photochromic soft, free from glare contains some pernicious gases unlike other light source, and the recyclable utilization of LED waste products, is real green energy conservation product;
(6), led light source is that a kind of high hardness resin illuminator but not tungsten filament glass etc. damage light source easily, so seismic force is higher relatively, the environment temperature adaptive faculty is strong;
(7), the LED road lamp switch response time is short, no stroboscopic phenomenon, low colour temperature (about 3000K), soft warm white light is not hindered eyes, and is comfortable to human eye perceives;
(8), the dustproof and waterproof grade that adopts of LED street lamp is up to IP67, LED road-light light-source electrical equipment is integrated, install simple, easy maintenance;
(9), since " RGB three-primary color LED chip " be potted directly on " metal heat sink ", effectively solved the heat dissipation problem of LED street lamp, improve the LED luminous efficiency exactly; Under this prerequisite, sustainment rate 〉=96% of sustainment rate 〉=98%, the 10000 hour luminous flux of 5000 hours luminous fluxes of LED street lamp;
(10), than energy-conservation more than 70% with the conventional road lamp (as high-pressure mercury lamp) of illumination;
(11), because " RGB three-primary color LED chip " is potted directly on " metal heat sink ", and the heat radiation approach shortens, and light fixture adopts the directional type radiating treatment, the heat that produces when making street lamp work conducts to outside the shell rapidly;
(12), the constant-current driving power supply of street lamp has over-voltage over-current protection, the anti-surge surge protection of start, good functions such as EMI processing; Have the PFC circuit for rectifying, have higher power factor, improve the utilization rate of whole electrical network.
Description of drawings
Fig. 1 is the stereogram of the LED street lamp of high light efficiency and high-color rendering.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
As shown in Figure 1, the LED street lamp of high light efficiency described in the utility model and high-color rendering comprises lamp housing 1, one side lamp housing 1 be provided with mounting pipe 6, mounting pipe 6 is used for whole lamp body is installed in light pole.Be provided with driving power in the described lamp housing 1, described driving power is a constant-current driving power supply.Lamp housing 1 is provided with metal heat sink 2.Metal heat sink 2 is made by aluminium, is sheet, is evenly equipped with fin on its back, and fin can increase the area that radiator contacts with air, further strengthens radiating efficiency.The front of described metal heat sink 2 is provided with line layer, the front of metal heat sink 2 is provided with several circular grooves 4, be provided with RGB three-primary color LED chip 3 in the described circular groove 4, metal heat sink 2 is provided with the led chip solder joint 5 that is electrically connected with line layer in the both sides of each circular groove 4, led chip solder joint 5 is electrically connected by lead the two poles of the earth with RGB three-primary color LED chip 3.
Be filled with thermal conductive insulation glue between described RGB three-primary color LED chip 3 and the circular groove 4, the effect of thermal conductive insulation glue is to increase heat transfer efficiency, increases radiating efficiency.
The utility model is when concrete encapsulation, go up setting " circular groove " in " metal heat sink ", in " RGB three-primary color LED chip " placement " circular groove ", between " RGB three-primary color LED chip " and " circular groove ", be filled with thermal conductive insulation glue, both sides at " circular groove " are provided with " led chip solder joint ", " led chip solder joint " is arranged on " metal heat sink ", the P of RGB three-primary color LED chip, the N utmost point is fixed on " led chip solder joint " by playing the gold thread connection or deciding machine group with group, makes copper foil circuit according to the actual production requirement in " metal heat sink " then.Take this method for packing, RGB three-primary color LED chip and metal heat sink become one " LED and metal heat sink firming body ".Compare with " LED → pcb board (metal heat sink) → thermal conductive insulation glue → metal shell → lamp body is outer " heat radiation approach, adopt the heat radiation approach of the street lamp of this method for packing design to be " LED and metal heat sink firming body → lamp body are outer ", the step of only need dispelling the heat together just can solve the heat dissipation problem of LED street lamp.Adopt the light fixture good heat dissipation effect of such method for packing, the temperature when effectively reducing RGB three-primary color LED chip operation can improve LED luminous efficiency, colour rendering and service life effectively.
In a word; though the utility model has exemplified above-mentioned preferred implementation; but should illustrate; though those skilled in the art can carry out various variations and remodeling; unless such variation and remodeling have departed from scope of the present utility model, otherwise all should be included in the protection domain of the present utility model.

Claims (4)

1. the LED street lamp of high light efficiency and high-color rendering, it is characterized in that: comprise lamp housing (1), one side of lamp housing (1) is provided with mounting pipe (6), lamp housing is provided with driving power in (1), lamp housing (1) is provided with metal heat sink (2), the front of described metal heat sink (2) is provided with line layer, the front of metal heat sink (2) is provided with several circular grooves (4), be provided with RGB three-primary color LED chip (3) in the described circular groove (4), metal heat sink (2) is provided with the led chip solder joint (5) that is electrically connected with line layer in the both sides of each circular groove (4), led chip solder joint (5) is electrically connected by lead the two poles of the earth with RGB three-primary color LED chip (3).
2. according to the LED street lamp of described high light efficiency of claim 1 and high-color rendering, it is characterized in that: be filled with thermal conductive insulation glue between described RGB three-primary color LED chip (3) and the circular groove (4).
3. according to the LED street lamp of claim 1 or 2 described high light efficiencies and high-color rendering, it is characterized in that: described metal heat sink (2) is four, is distributed on the metal heat sink (2).
4. according to the LED street lamp of claim 1 or 2 described high light efficiencies and high-color rendering, it is characterized in that: described driving power is a constant-current driving power supply.
CN2010206575847U 2010-12-14 2010-12-14 Light-emitting diode (LED) street lamp of high luminous efficiency and high color-rendering property Expired - Fee Related CN202001932U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206575847U CN202001932U (en) 2010-12-14 2010-12-14 Light-emitting diode (LED) street lamp of high luminous efficiency and high color-rendering property

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206575847U CN202001932U (en) 2010-12-14 2010-12-14 Light-emitting diode (LED) street lamp of high luminous efficiency and high color-rendering property

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CN202001932U true CN202001932U (en) 2011-10-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104373838A (en) * 2014-06-30 2015-02-25 深圳大学 LED light source module and LED lamp
CN105737007A (en) * 2015-06-14 2016-07-06 重庆品鉴光电工程有限公司 LED illumination optical component with high heat dissipation and high colour rendering property, and encapsulation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104373838A (en) * 2014-06-30 2015-02-25 深圳大学 LED light source module and LED lamp
CN104373838B (en) * 2014-06-30 2016-03-23 深圳大学 A kind of LED light source module and LED lamp
CN105737007A (en) * 2015-06-14 2016-07-06 重庆品鉴光电工程有限公司 LED illumination optical component with high heat dissipation and high colour rendering property, and encapsulation method thereof

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111005

Termination date: 20121214