CN201934965U - LED bulb with good radiation and high color rendering - Google Patents

LED bulb with good radiation and high color rendering Download PDF

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Publication number
CN201934965U
CN201934965U CN2010206575033U CN201020657503U CN201934965U CN 201934965 U CN201934965 U CN 201934965U CN 2010206575033 U CN2010206575033 U CN 2010206575033U CN 201020657503 U CN201020657503 U CN 201020657503U CN 201934965 U CN201934965 U CN 201934965U
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CN
China
Prior art keywords
led
rgb
led chip
aluminium base
color rendering
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Expired - Fee Related
Application number
CN2010206575033U
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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 CN2010206575033U priority Critical patent/CN201934965U/en
Application granted granted Critical
Publication of CN201934965U publication Critical patent/CN201934965U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an LED bulb with good radiation and high color rendering, which comprises a lamp head (1) and a radiator (2), wherein the lamp head (1) is internally provided a power supply, the radiator (2) is provided with an aluminum substrate (3) which is provided with a plurality of LED chips (4) with three primary colors of RGB (red, green and blue) and also provided with a line layer and a plurality of circular arc grooves (5), the LED chips (4) with the three primary colors of RGB are arranged in the circular arc grooves (5), two sides of each circular arc grooves (5) are provided with LED chip welding dots (6) electrically connected with the line layer by the aluminum substrate (3), and the LED chip welding dots (6) are electrically connected with two poles of the LED chip (4) with the three primary colors of RGB through a guide line. The LED bulb has good radiating effect, can effectively lower the temperature of the LED chip with the three primary colors of RGB in work, and plays a good role in improving the color rendering and the service life of the LED.

Description

The LED bulb of the good and high-color rendering of heat radiation
Technical field
The utility model relates to a kind of lighting, specifically is meant a kind of LED bulb of dispel the heat good and high-color rendering.
Background technology
LED bulb structure mainly is made up of lamp holder, lampshade, radiator, power supply, led light source.Along with the semi-conductor industry development of technology, the light emitting diode cost performance improves day by day, and it is trend of the times that the LED bulb replaces conventional bulb, is widely used in the illumination in indoor places such as family, hotel, mansion, market, recreation ground, aisle, conference hall.
At present, on the market on the substrate (as aluminium base) of the most weld metal material of the LED of all LED bulbs.The heat radiation approach of whole LED bulb: 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, and causes collector current to increase, junction temperature is further raise, finally cause LED to lose efficacy.In addition, the LED bulb 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 bulb come off.
Radiating treatment has become one of vital challenge in the LED lamp envelope design, 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, lowers efficiency, even quits work.So heat dissipation problem is the most scabrous key of LED bulb.The life-span of LED is depended on its junction temperature fully in fact, as long as good the radiating treatment of LED bulb, it is no problem that the life-span of LED was brought up to more than 100,000 hours.
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 heat transference efficiency between a kind of RGB of raising three-primary color LED chip and the substrate, makes LED send soft warm white light, does not hinder eyes, gives human eye perceives comfortable, the LED bulb that colour rendering is good.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the LED bulb of dispel the heat good and high-color rendering, comprise lamp holder and radiator, be provided with power supply in the lamp holder, be equiped with aluminium base on the described radiator, aluminium base is provided with several RGB three-primary color LED chips, aluminium base is provided with line layer, described aluminium base is provided with several circular grooves, described RGB three-primary color LED chip is arranged in the circular groove, aluminium base 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.
Be provided with thermal conductive insulation glue between described radiator and the aluminium base.
Described radiator is provided with the lampshade of being made by the nanometer abrasive material.
Owing to adopted above-mentioned structure, the utility model is encapsulated into RGB three-primary color LED chip in the aluminium base, and it has following beneficial effect:
(1), " RGB three-primary color LED chip " takes distributed layout on same aluminium base, 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), add the fluorescent material technology with traditional blue light and compare, adopt " RGB three-primary color LED chip " to be potted directly on the aluminium base, its light efficiency height, the colour rendering index height, light decay is low.
(3), adding the fluorescent material technology with traditional blue light compares, adopt " RGB three-primary color LED chip " to be potted directly on the aluminium base, owing to do not need encapsulating material such as fluorescent material, bad problems such as encapsulating material such as fluorescent material is aging can not appear, can solve the problem of colour temperature drift effectively.
(4), because " RGB three-primary color LED chip " is potted directly on the aluminium base, in the production of LED bulb, reduced one manufacturing procedure of " LED is welded on the aluminium base ", be suitable for the LED bulb and produce in batches.
(5), because " led chip " is potted directly on " aluminium base ", and the LED bulb service life reaches 80000 hours, as calculating by 8 hours every days, the theoretical life-span is more than 27 years, be common bulb 10-20 doubly, even higher.
(6), LED is cold light source, photochromic soft, free from glare contains some pernicious gases (as containing poisonous mercury vapour in the electricity-saving lamp) unlike other light source, and the recyclable utilization of LED waste products, is real green energy conservation product.
(7), 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.
(8), the LED bulb 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.
(9), the dustproof and waterproof grade that adopts of LED bulb is up to IP54, LED bulb source electrical equipment is integrated, install simple, easy maintenance.
(10), since " led chip " be potted directly on " aluminium base ", effectively solved the heat dissipation problem of LED bulb, sustainment rate 〉=96% of sustainment rate 〉=98%, the 10000 hour luminous flux of 5000 hours luminous fluxes of LED bulb.
(11), than energy-conservation more than 80% with the conventional bulb (as incandescent lamp) of illumination.
(12), because " led chip " is potted directly on " aluminium base ", and the heat radiation approach shortens, and light fixture adopts the directional type radiating treatment, the heat that produces when making bulb work conducts to shell rapidly.
(13), the constant-current driving power supply of bulb 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.
(14), adopt the design of E27 lamp holder, lampshade employing nanometer abrasive material, the light free from glare that light fixture sends.
Description of drawings
Fig. 1 dispels the heat well and the structural representation of the LED bulb of 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 bulb of the good and high-color rendering of heat radiation described in the utility model comprises lamp holder 1, lampshade 7 and radiator 2.Described lamp holder 1 is the E27 lamp holder, and radiator 2 is made by aluminium, and radiator 2 peripheries are provided with fin, and lampshade 7 is made by the nanometer abrasive material, and lampshade 7 can play the effect of soft light.Be provided with power supply in the lamp holder 1.Be equiped with aluminium base 3 on the described radiator 2, be provided with thermal conductive insulation glue between described radiator 2 and the aluminium base 3.Aluminium base 3 is provided with several RGB three-primary color LED chips 4, and aluminium base 3 is made up of line layer (copper foil layer), heat conductive insulating layer and metal-based layer.Described aluminium base 3 is provided with several circular grooves 5, and described RGB three-primary color LED chip 4 is arranged in the circular groove 5, is filled with thermal conductive insulation glue between described RGB three-primary color LED chip 4 and the circular groove 5.Described aluminium base 3 is provided with the led chip solder joint 6 that is electrically connected with line layer in the both sides of each circular groove 5, led chip solder joint 6 is electrically connected by lead the two poles of the earth with RGB three-primary color LED chip 4.
Compare with traditional outer heat radiation approach of LED → pcb board (aluminium base) → thermal conductive insulation glue → metal shell → lamp body, the utility model heat radiation approach is outside LED and the aluminium base firming body → thermal conductive insulation glue → metal shell → lamp body, has reduced the step of dispelling the heat together.Adopt the good heat dissipation effect of the LED bulb of the utility model substrate, the temperature in the time of can effectively reducing RGB three-primary color LED chip operation can play good effect to improving LED colour rendering and life-span.
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. one kind dispels the heat well and the LED bulb of high-color rendering, it is characterized in that: comprise lamp holder (1), lamp holder is provided with power supply in (1), lamp holder (1) is provided with radiator (2), be equiped with aluminium base (3) on the described radiator (2), aluminium base (3) is provided with several RGB three-primary color LED chips (4), aluminium base (3) is provided with line layer, described aluminium base (3) is provided with several circular grooves (5), described RGB three-primary color LED chip (4) is arranged in the circular groove (5), aluminium base (3) is provided with the led chip solder joint (6) that is electrically connected with line layer in the both sides of each circular groove (5), led chip solder joint (6) is electrically connected by lead the two poles of the earth with RGB three-primary color LED chip (4).
2. the LED bulb of good according to the described heat radiation of claim 1 in high-color rendering is characterized in that: be filled with thermal conductive insulation glue between described RGB three-primary color LED chip (4) and the circular groove (5).
3. the LED bulb of good according to claim 1 or 2 described heat radiations in high-color rendering is characterized in that: be provided with thermal conductive insulation glue between described radiator (2) and the aluminium base (3).
4. the LED bulb of good according to claim 1 or 2 described heat radiations in high-color rendering, it is characterized in that: described radiator (2) is provided with the lampshade of being made by the nanometer abrasive material (7).
CN2010206575033U 2010-12-14 2010-12-14 LED bulb with good radiation and high color rendering Expired - Fee Related CN201934965U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206575033U CN201934965U (en) 2010-12-14 2010-12-14 LED bulb with good radiation and high color rendering

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Application Number Priority Date Filing Date Title
CN2010206575033U CN201934965U (en) 2010-12-14 2010-12-14 LED bulb with good radiation and high color rendering

Publications (1)

Publication Number Publication Date
CN201934965U true CN201934965U (en) 2011-08-17

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CN2010206575033U Expired - Fee Related CN201934965U (en) 2010-12-14 2010-12-14 LED bulb with good radiation and high color rendering

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105407568A (en) * 2015-11-24 2016-03-16 贵州剑河县复兴节能照明设备有限公司 Method for reducing LED headlamp luminous decay
CN106032894A (en) * 2015-03-10 2016-10-19 常州市武进区半导体照明应用技术研究院 A self-ballasting LED lamp and a preparation method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106032894A (en) * 2015-03-10 2016-10-19 常州市武进区半导体照明应用技术研究院 A self-ballasting LED lamp and a preparation method therefor
CN105407568A (en) * 2015-11-24 2016-03-16 贵州剑河县复兴节能照明设备有限公司 Method for reducing LED headlamp luminous decay

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

Granted publication date: 20110817

Termination date: 20121214