CN204986526U - LED illumination optical assembly good and high colour rendering dispels heat - Google Patents

LED illumination optical assembly good and high colour rendering dispels heat Download PDF

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Publication number
CN204986526U
CN204986526U CN201520405834.0U CN201520405834U CN204986526U CN 204986526 U CN204986526 U CN 204986526U CN 201520405834 U CN201520405834 U CN 201520405834U CN 204986526 U CN204986526 U CN 204986526U
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China
Prior art keywords
led
led chip
rgb
primary color
optical assembly
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Expired - Fee Related
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CN201520405834.0U
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Chinese (zh)
Inventor
刘东芳
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Chongqing Pinjian Photoelectricity Engineering Co Ltd
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Chongqing Pinjian Photoelectricity Engineering Co Ltd
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Abstract

The utility model discloses a LED illumination optical assembly good and high colour rendering dispels heat, including metal radiating piece and a plurality of RGB three primary colors LED chip, the metal radiating piece is provided with the line layer on being positive, the metal radiating piece still is provided with a plurality of recess on being positive, the RGB three primary colors LED chip package be in in the recess, the metal radiating piece is at every the both sides of recess all be provided with with the LED chip solder joint of line layer electricity federation, LED chip solder joint with be connected with the wire between the two poles of the earth of RGB three primary colors LED chip, the device can effectively solve the difficult problem of LED heat dissipation and colour rendering, shortens the heat dissipation way of LED light, improves LED luminous efficacy, improve the LED colour rendering, make the LED light send soft warm white light, do not hinder eyes, give other people the eye and feel comfortable.

Description

A kind of LED illumination optical assembly that is good and high-color rendering that dispels the heat
Technical field
The utility model relates to a kind of LED illumination optical assembly that is good and high-color rendering that dispels the heat.
Background technology
LED illumination lamp structure is primarily of lampshade, metal heat sink, power supply, LED light source composition.Along with the progress of semi-conductor industry technology, light emitting diode cost performance improves day by day, and it is trend of the times that LED illumination lamp replaces traditional lighting lamp.
At present, on market the most weld metal material of the LED of all LED illumination lamp substrate (as aluminium base) on.The sinking path of whole illuminating lamp: outside LED → pcb board (aluminium base) → thermal conductive insulation glue → metal shell → lamp body, although the metal substrates such as aluminium base have very excellent heat conductivility and the electrical insulation properties of high strength, but sinking path is oversize, the heat that LED produces not easily is got rid of, and causes LED junction temperature to raise.The rising of LED junction temperature can make the current amplification factor of transistor increase sharply, and causes collector current to increase, makes again junction temperature raise further, finally cause LED to lose efficacy.In addition, LED illumination lamp works under being in high temperature for a long time, can cause the bad phenomenon such as the insulating properties of illuminating lamp are degenerated, the heat ageing of component damage, material, low melting point weld cracking, solder joint come off.
Radiating treatment has become one of vital challenge in LED illumination lamp design, namely tighten at framework, when operating space is more and more less, 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 and the life-span of product simultaneously.In view of the requirement of LED to radiating condition is higher, the limit value if PN junction junction temperature is above standard, LED will aggravate light decay, lowers efficiency, and even quits work.So heat dissipation problem is the most scabrous key of LED illumination lamp.
In addition, the preparation method of white light LEDs main flow is that blue-light LED chip excites yellow fluorescent powder, luminous flux and the higher white light of luminous efficiency can be obtained, be difficult to the white light obtaining low colour temperature high-color rendering, because emission spectrum does not have a continuous spectrum characteristic, ruddiness composition is lacked, so colour temperature is high and colour rendering is poor in spectrum.At present, the scheme of blue-light LED chip and yellow fluorescent powder mixing is difficult to realize in the low colour temperature of 4, below 000K and the white light of Ra>80 high-color rendering.The color drift of great power LED be not only aging by fluorescent material caused by, main factor is the change of material itself.Encapsulating material (as silica gel etc.) is easily aging under the irradiation of ultraviolet light, the lost of life, and the color drift of LED can be caused serious.Send to make LED and do not hinder eyes, to the comfortable warm white light of human eye perceives, just need improve LED colour rendering.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of LED illumination optical assembly that is good and high-color rendering that dispels the heat, and this device effectively can solve a difficult problem for LED heat radiation and colour rendering, shortens the sinking path of LED illumination lamp, improves LED luminous efficiency; Improve LED colour rendering, make LED illumination lamp send soft warm white light, do not hinder eyes, comfortable to human eye perceives.
For solving the problem, the utility model adopts following technical scheme:
A kind of LED illumination optical assembly that is good and high-color rendering that dispels the heat, comprise metal heat sink and several RGB three-primary color LED chips, described metal heat sink front is provided with line layer, described metal heat sink front is also provided with several grooves, described RGB three-primary color LED chip package is in described groove, described metal heat sink is provided with the LED chip solder joint with described line layer Electricity Federation in the both sides of each described groove, is connected with wire between the two poles of the earth of LED chip solder joint and described RGB three-primary color LED chip.
Preferably, silica gel is filled with between described RGB three-primary color LED chip and described groove.
Preferably, described groove is circular groove.
Preferably, described for groove be square groove.
Preferably, by regulating the operating current of RGB three-primary color LED chip, dominant wavelength and the luminous intensity of the light that RGB three-primary color LED chip is sent are optimized combination, and the luminous intensity ratio of described RGB three-primary color LED chip is that 3(is red): 6(is green): 1(is blue).
Owing to have employed above-mentioned structure, the present invention add phosphor technologies with traditional blue light compared with its light efficiency high, colour rendering index is high, light decay is low, colour temperature drift is little, adopt RGB three primary colours mixing luminous intensity distribution, by the proportioning regulating the operating current of three-primary color LED chip to regulate RGB three primary colours, the light of shades of colour can be obtained.Advantage is that efficiency is high, use is flexible, and because luminescence is all from red, green, blue three kinds of LED, do not need to carry out spectrum conversion, therefore its Minimal energy loss, most effective.Simultaneously because RGB three-primary color LED can be luminous separately, and its luminous intensity can regulate separately, therefore has higher flexibility.
" RGB three-primary color LED chip " integration packaging in " metal heat sink ", is formed " LED and metal heat sink firming body ", effectively can shorten the sinking path of LED by the present invention.
The beneficial effects of the utility model are:
(1), one or more groups " RGB three-primary color LED chip " is encapsulated in " metal heat sink ", shortens sinking path, good heat dissipation effect, LED work light efficiency is high, long service life.
(2), " RGB three-primary color LED chip " takes distributed layout in same " metal heat sink ", take vertical, horizontal radiating treatment, area of dissipation increases, effectively can solve the drawback of the heat radiation difficulty that LED exists, effectively reduce junction temperature during LED work, avoid causing irreversibility light decay.
(3), compared with, with traditional blue light adding phosphor technologies, adopt " RGB three-primary color LED chip " to be potted directly in " metal heat sink ", its light efficiency is high, and colour rendering index is high, and light decay is low.
(4), compared with adding phosphor technologies with traditional blue light, " RGB three-primary color LED chip " is adopted to be potted directly in " metal heat sink ", owing to not needing the encapsulating materials such as fluorescent material, there will not be the bad problems such as the encapsulating materials such as fluorescent material are aging, effectively can solve the problem of colour temperature drift.
(5), LED is cold light source, and photochromic soft, free from glare, contains some pernicious gases unlike other light source, and LED waste products recoverable, be real green energy conservation product.
(6), LED light source is a kind of high hardness resin illuminator but not tungsten filament glass etc. easily damage light source, therefore seismic force is relatively high, and environment temperature adaptive faculty is strong.
(7), in the production of LED illumination lamp, because " RGB three-primary color LED chip " is potted directly in " metal heat sink ", the raw material such as aluminium base and heat-conducting silicone grease can be saved, on LED illumination lamp is produced, at least reduce three road manufacturing procedures simultaneously, be suitable for LED illumination lamp batch production.
(8), low colour temperature (about 3000K) high-color development LED optical assembly, soft warm white light, does not hinder eyes, comfortable to human eye perceives.
(9), because " RGB three-primary color LED chip " is potted directly in " metal heat sink ", effectively solving the heat dissipation problem of LED illumination lamp, is exactly improve LED luminous efficiency.In this context, sustainment rate >=98% of LED illumination lamp 5000 hours luminous fluxes, sustainment rate >=96% of 10000 hours luminous fluxes.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Consult a kind of LED illumination optical assembly that is good and high-color rendering that dispels the heat shown in Fig. 1, dispel the heat LED illumination optical assembly that is good and high-color rendering, comprise metal heat sink 1 and several RGB three-primary color LED chips 3, described metal heat sink 1 front is provided with line layer, described metal heat sink 1 front is also provided with several grooves 2, described RGB three-primary color LED chip 3 is encapsulated in described groove 2, described metal heat sink 1 is provided with the LED chip solder joint 4 with described line layer Electricity Federation in the both sides of each described groove 2, wire 5 is connected with between the two poles of the earth of LED chip solder joint 4 and described RGB three-primary color LED chip 3.
A preferred embodiment in the utility model, is filled with silica gel between described RGB three-primary color LED chip 3 and described groove 2.
A preferred embodiment in the utility model, described groove 2 is circular groove.
A preferred embodiment in the utility model, described be groove 2 is square groove.
A preferred embodiment in the utility model, by regulating the operating current of RGB three-primary color LED chip 3, dominant wavelength and the luminous intensity of the light that RGB three-primary color LED chip is sent are optimized combination, and the luminous intensity ratio of described RGB three-primary color LED chip is that 3(is red): 6(is green): 1(is blue).
A kind of method for packing of LED illumination optical assembly of the good and high-color rendering of dispelling the heat: comprise following implementation step:
(1), groove is set in metal heat sink, RGB three-primary color LED chip is placed in groove, filling gel between RGB three-primary color LED chip and groove, arranges LED chip solder joint in the both sides of groove, the line layer Electricity Federation of LED chip solder joint and metal heat sink;
(2), P, N pole of RGB three-primary color LED chip helps to determine on LED chip solder joint by beating gold thread and connecting or determine machine with side, then makes aluminium base copper foil circuit according to production requirement in the front of metal heat sink
Take this method for packing, RGB three-primary color LED chip and metal heat sink become a LED and metal heat sink firming body.Compared with the outer sinking path of LED → pcb board (metal heat sink) → thermal conductive insulation glue → metal shell → lamp body, the sinking path of the illuminating lamp adopting this encapsulation technology to design is, outside LED and metal heat sink firming body → lamp body, decrease three roads heat radiation steps.Adopt the good heat dissipation effect of the LED lamp of the present invention's encapsulation, effectively can reduce temperature during RGB three-primary color LED chip operation, good effect is played to raising LED light effect and color developing.
(2), by regulating the operating current of three-primary color LED chip, the dominant wavelength of the light sent due to three kinds of LED chip generally: ruddiness is 615 ~ 620nm, and green glow is 530 ~ 540nm, and blue light is 460 ~ 470nm.Reach best light efficiency, can through the dominant wavelength proportioning of experimental selection the best in the dominant wavelength ranges of these three kinds of light.If in order to improve colour rendering index, blue light (460nm), green glow (525nm), ruddiness (635nm) can be adopted to combine, the dominant wavelength proportioning of this light can obtain best colour rendering index (reaching more than 95), and lowest color temperature can accomplish 2700K.Dominant wavelength and the luminous intensity of the light that three kinds of LED chip are sent are optimized combination, and it is red that the ratio for the luminous intensity of three kinds of LED red, green, blue chips orientates 3(as): 6(is green): 1(is blue).
Owing to have employed above-mentioned structure, the present invention add phosphor technologies with traditional blue light compared with its light efficiency high, colour rendering index is high, light decay is low, colour temperature drift is little, adopt RGB three primary colours mixing luminous intensity distribution, by the proportioning regulating the operating current of three-primary color LED chip to regulate RGB three primary colours, the light of shades of colour can be obtained.Advantage is that efficiency is high, use is flexible, and because luminescence is all from red, green, blue three kinds of LED, do not need to carry out spectrum conversion, therefore its Minimal energy loss, most effective.Simultaneously because RGB three-primary color LED can be luminous separately, and its luminous intensity can regulate separately, therefore has higher flexibility.
" RGB three-primary color LED chip " integration packaging in " metal heat sink ", is formed " LED and metal heat sink firming body ", effectively can shorten the sinking path of LED by the present invention.
The beneficial effects of the utility model are:
(1), one or more groups " RGB three-primary color LED chip " is encapsulated in " metal heat sink ", shortens sinking path, good heat dissipation effect, LED work light efficiency is high, long service life.
(2), " RGB three-primary color LED chip " takes distributed layout in same " metal heat sink ", take vertical, horizontal radiating treatment, area of dissipation increases, effectively can solve the drawback of the heat radiation difficulty that LED exists, effectively reduce junction temperature during LED work, avoid causing irreversibility light decay.
(3), compared with, with traditional blue light adding phosphor technologies, adopt " RGB three-primary color LED chip " to be potted directly in " metal heat sink ", its light efficiency is high, and colour rendering index is high, and light decay is low.
(4), compared with adding phosphor technologies with traditional blue light, " RGB three-primary color LED chip " is adopted to be potted directly in " metal heat sink ", owing to not needing the encapsulating materials such as fluorescent material, there will not be the bad problems such as the encapsulating materials such as fluorescent material are aging, effectively can solve the problem of colour temperature drift.
(5), LED is cold light source, and photochromic soft, free from glare, contains some pernicious gases unlike other light source, and LED waste products recoverable, be real green energy conservation product.
(6), LED light source is a kind of high hardness resin illuminator but not tungsten filament glass etc. easily damage light source, therefore seismic force is relatively high, and environment temperature adaptive faculty is strong.
(7), in the production of LED illumination lamp, because " RGB three-primary color LED chip " is potted directly in " metal heat sink ", the raw material such as aluminium base and heat-conducting silicone grease can be saved, on LED illumination lamp is produced, at least reduce three road manufacturing procedures simultaneously, be suitable for LED illumination lamp batch production.
(8), low colour temperature (about 3000K) high-color development LED optical assembly, soft warm white light, does not hinder eyes, comfortable to human eye perceives.
(9), because " RGB three-primary color LED chip " is potted directly in " metal heat sink ", effectively solving the heat dissipation problem of LED illumination lamp, is exactly improve LED luminous efficiency.In this context, sustainment rate >=98% of LED illumination lamp 5000 hours luminous fluxes, sustainment rate >=96% of 10000 hours luminous fluxes.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (5)

1. the LED illumination optical assembly that is good and high-color rendering that dispels the heat, it is characterized in that: comprise metal heat sink (1) and several RGB three-primary color LED chips (3), described metal heat sink (1) front is provided with line layer, described metal heat sink (1) front is also provided with several grooves (2), described RGB three-primary color LED chip (3) is encapsulated in described groove (2), described metal heat sink (1) is provided with the LED chip solder joint (4) with described line layer Electricity Federation in the both sides of each described groove (2), wire (5) is connected with between the two poles of the earth of LED chip solder joint (4) and described RGB three-primary color LED chip (3).
2. the LED illumination optical assembly of the good and high-color rendering of heat radiation according to claim 1, is characterized in that: be filled with silica gel between described RGB three-primary color LED chip (3) and described groove (2).
3. the LED illumination optical assembly of the good and high-color rendering of heat radiation according to claim 1, is characterized in that: described groove (2) is circular groove.
4. the LED illumination optical assembly of the good and high-color rendering of heat radiation according to claim 1, is characterized in that: described groove (2) is square groove.
5. the LED illumination optical assembly of the good and high-color rendering of heat radiation according to claim 1, it is characterized in that: by regulating the operating current of RGB three-primary color LED chip, dominant wavelength and the luminous intensity of the light that RGB three-primary color LED chip is sent are optimized combination, and the luminous intensity ratio of described RGB three-primary color LED chip is that 3(is red): 6(is green): 1(is blue).
CN201520405834.0U 2015-06-14 2015-06-14 LED illumination optical assembly good and high colour rendering dispels heat Expired - Fee Related CN204986526U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160120

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