CN201935049U - Light emitting diode (LED) spot light with good heat radiation and high color rendering - Google Patents

Light emitting diode (LED) spot light with good heat radiation and high color rendering Download PDF

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Publication number
CN201935049U
CN201935049U CN2010206575334U CN201020657533U CN201935049U CN 201935049 U CN201935049 U CN 201935049U CN 2010206575334 U CN2010206575334 U CN 2010206575334U CN 201020657533 U CN201020657533 U CN 201020657533U CN 201935049 U CN201935049 U CN 201935049U
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CN
China
Prior art keywords
led
light
rgb
led chip
aluminium base
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Expired - Fee Related
Application number
CN2010206575334U
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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 CN2010206575334U priority Critical patent/CN201935049U/en
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Publication of CN201935049U publication Critical patent/CN201935049U/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a light emitting diode (LED) spot light with good heat radiation and high color rendering, which comprises a wire box (6), wherein a drive power supply is arranged in the wire box (6), the side part of the wire box (6) is provided with a lamp adapter (1), the rear part of the lamp adapter (1) is provided with a metal heat radiating piece (2), the front part of the lamp adapter (1) is provided with an aluminum substrate (7) which is attached onto the metal heat radiating piece (2), the front surface of the aluminum substrate (7) is provided with a circuit layer, a plurality of arc grooves (4) are arranged on the front surface of the aluminum substrate (7), a plurality of Red-Green-Blue (RGB) three-basic-color LED chips (3) are respectively arranged in the arc grooves (4), the aluminum substrate (7) is provided with LED chip welding points (5) which are electrically connected with the circuit layer at two sides of each RGB three-basic-color LED chips (3), and each LED chip welding point (5) is electrically connected with two electrodes of each RGB three-basic-color LED chip (3) through a conducting wire. Due to adoption of the LED spot light, the working temperature of the RGB three-basic-color LED chips can be reduced, and the LED rendering and the service life can be well improved.

Description

The LED shot-light of the good and high-color rendering of heat radiation
Technical field
The utility model belongs to the technical field of lighting, specifically is meant a kind of LED shot-light of dispel the heat good and high-color rendering.
Background technology
LED shot-light structure mainly is made up of line box, lamp holder, metal heat sink, power supply, led light source.Be mainly used in interior decoration illuminations such as store display show window, restaurant, dining room, show local lightings such as the Room, the artistic Room, museum, office, reading room.The illumination of atmosphere such as bar, disco, Karaoke.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 shot-light replaces traditional shot-light.
At present, on the market on the substrate (as aluminium base) of the most weld metal material of the LED of all LED shot-lights.The heat radiation approach of whole LED shot-light: 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 shot-light 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 shot-light come off.
Radiating treatment has become one of vital challenge in the design of LED shot-light, 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 shot-light.
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 a kind of and improves heat transference efficiency between led chip and the substrate, makes LED send soft warm white light, does not hinder eyes, gives human eye perceives comfortable, the LED shot-light 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 shot-light of dispel the heat good and high-color rendering, comprise the line box, be provided with driving power in the line box, the sidepiece of described line box is provided with lamp holder, the rear portion of lamp holder is provided with metal heat sink, the front portion of lamp holder is provided with the aluminium base that is attached on the metal heat sink, the front of described aluminium base is provided with line layer, the front of 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 filled with thermal conductive insulation glue between described aluminium base and the metal heat sink.
The top of described line box is provided with guide-rail coupling member.
Described metal heat sink is made by aluminium, is column, and its side face is evenly equipped with fin.
Owing to adopted above-mentioned structure, LED shot-light of the present utility model is encapsulated into RGB three-primary color LED chip in the aluminium base, forms LED and aluminium base firming body, 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 shot-light, reduced one manufacturing procedure of " LED is welded on the aluminium base ", be suitable for the LED shot-light and produce in batches;
(5), because " RGB three-primary color LED chip " is potted directly on " aluminium base ", and the LED shot-light reaches 80000 hours service life, as calculating by 8 hours every days, the theoretical life-span is more than 27 years, be common shot-light 10-20 doubly, even higher;
(6), 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;
(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 shot-light switching 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 shot-light is up to IP54, LED shot-light light source electrical equipment is integrated, install simple, easy maintenance;
(10), since " RGB three-primary color LED chip " be potted directly on " aluminium base ", effectively solved the heat dissipation problem of LED shot-light, sustainment rate 〉=96% of sustainment rate 〉=98%, the 10000 hour luminous flux of 5000 hours luminous fluxes of LED shot-light;
(11), than energy-conservation more than 70% with traditional shot-light of illumination;
(12), because " RGB three-primary color 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 shot-light work conducts to shell rapidly;
(13), the constant-current driving power supply of shot-light 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), guide-rail coupling member can be convenient to LED shot-light described in the utility model is installed on the guide rail, is convenient to move and adjust the position of LED shot-light like this.
Description of drawings
Fig. 1 dispels the heat well and the stereogram of the LED shot-light 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 shot-light of the good and high-color rendering of heat radiation described in the utility model comprises line box 6, is provided with driving power in the line box 6.The top of the line box of stating 6 is provided with guide-rail coupling member 8.Guide-rail coupling member can be convenient to LED shot-light described in the utility model is installed on the guide rail, is convenient to move and adjust the position of LED shot-light like this.The sidepiece of described line box 6 is provided with lamp holder 1, and the rear portion of lamp holder 1 is provided with metal heat sink 2, and metal heat sink 2 is made by aluminium, is column, and its side face is evenly equipped with fin, and fin can increase the area that radiator contacts with air, further strengthens radiating efficiency.The front portion of described lamp holder 1 is provided with the aluminium base 7 that is attached on the metal heat sink 2, is filled with thermal conductive insulation glue between described aluminium base 7 and the metal heat sink 2.The front of described aluminium base 7 is provided with line layer, the front of aluminium base 7 is provided with several circular grooves 4, described RGB three-primary color LED chip 3 is arranged in the circular groove 4, is filled with thermal conductive insulation glue between described RGB three-primary color LED chip 3 and the circular groove 4.Aluminium base 7 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.
The utility model is when concrete encapsulation, circular groove is set on aluminium base, RGB three-primary color LED chip is placed in the circular groove, between RGB three-primary color LED chip and circular groove, fill thermal conductive insulation glue, in the both sides of circular groove the led chip solder joint is set, the led chip solder joint is electrically connected with the line layer of aluminium base, the P of RGB three-primary color LED chip, the N utmost point require to make aluminium base copper foil circuit at the copper foil layer of aluminium base according to actual production by playing the gold thread connection or deciding machine group with group and decide to the led chip solder joint then.Take this method for packing, RGB three-primary color LED chip and aluminium base become a LED and aluminium base firming body.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 shot-light 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 (5)

1. one kind dispels the heat well and the LED shot-light of high-color rendering, it is characterized in that: comprise line box (6), the line box is provided with driving power in (6), the sidepiece of described line box (6) is provided with lamp holder (1), the rear portion of lamp holder (1) is provided with metal heat sink (2), the front portion of lamp holder (1) is provided with the aluminium base (7) that is attached on the metal heat sink (2), the front of described aluminium base (7) is provided with line layer, the front of aluminium base (7) is provided with several circular grooves (4), described RGB three-primary color LED chip (3) is arranged in the circular groove (4), aluminium base (7) 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. the LED shot-light 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 (3) and the circular groove (4).
3. the LED shot-light of good according to claim 1 or 2 described heat radiations in high-color rendering is characterized in that: be filled with thermal conductive insulation glue between described aluminium base (7) and the metal heat sink (2).
4. the LED shot-light of good according to claim 1 or 2 described heat radiations in high-color rendering, it is characterized in that: the top of described line box (6) is provided with guide-rail coupling member (8).
5. the LED shot-light of good according to claim 1 or 2 described heat radiations in high-color rendering, it is characterized in that: described metal heat sink (2) is made by aluminium, is column, and its side face is evenly equipped with fin.
CN2010206575334U 2010-12-14 2010-12-14 Light emitting diode (LED) spot light with good heat radiation and high color rendering Expired - Fee Related CN201935049U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206575334U CN201935049U (en) 2010-12-14 2010-12-14 Light emitting diode (LED) spot light with good heat radiation and high color rendering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206575334U CN201935049U (en) 2010-12-14 2010-12-14 Light emitting diode (LED) spot light with good heat radiation and high color rendering

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Publication Number Publication Date
CN201935049U true CN201935049U (en) 2011-08-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566056A (en) * 2013-10-09 2015-04-29 德胜(苏州)洋楼有限公司 Adjusting type lamp box for log cabin indoor roof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566056A (en) * 2013-10-09 2015-04-29 德胜(苏州)洋楼有限公司 Adjusting type lamp box for log cabin indoor roof

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C17 Cessation of patent right
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Granted publication date: 20110817

Termination date: 20121214