CN201934966U - LED fluorescent tube high in lighting effect and color rendering - Google Patents
LED fluorescent tube high in lighting effect and color rendering Download PDFInfo
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- CN201934966U CN201934966U CN2010206575921U CN201020657592U CN201934966U CN 201934966 U CN201934966 U CN 201934966U CN 2010206575921 U CN2010206575921 U CN 2010206575921U CN 201020657592 U CN201020657592 U CN 201020657592U CN 201934966 U CN201934966 U CN 201934966U
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Abstract
The utility model discloses an LED fluorescent tube high in lighting effect and color rendering, which comprises a metallic heat-dissipating part (1) and a light cover (2). Two light holders (5) are respectively arranged at two ends of the metallic heat-dissipating part (1), a driving power source is arranged in the metallic heat-dissipating part (1), and a circuit layer and a plurality of arc grooves (3) are arranged on the metallic heat-dissipating part (1). A RGB (red, green and blue) LED chip (4) is arranged inside each arc groove (3), and LED chip welding spots (6) electrically connected with the circuit layer are respectively arranged on two sides of each arc groove (3) and electrically connected to the two poles of the corresponding RGB LED chip (4). The LED fluorescent tube is fine in heat dissipation effect, temperature of the RGB LED chips in operation can be effectively reduced, and illuminating efficiency, color rendering and service life of the LED can be effectively improved.
Description
Technical field
The utility model relates to a kind of lighting, specifically is meant the LED fluorescent tube of a kind of high light efficiency and high-color rendering.
Background technology
LED fluorescent tube structure mainly is made up of lampshade, metal heat sink, 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 fluorescent tube replaces traditional fluorescent tube.
At present, on the market on the substrate (as aluminium base) of the most weld metal material of the LED of all LED fluorescent tubes.The heat radiation approach of whole fluorescent tube: 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 fluorescent tube 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 fluorescent tube 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 fluorescent tube, 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 fluorescent tube, 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 the heat radiation approach of a kind of LED of shortening, makes it send soft warm white light, does not hinder eyes, gives human eye perceives comfortable, the LED fluorescent tube that LED light efficiency and colour rendering improve.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the LED fluorescent tube of high light efficiency and high-color rendering, comprise aluminum metal radiating piece and lampshade, the two ends of metal heat sink are provided with lamp holder, described metal heat sink is provided with line layer, described metal heat sink is provided with several circular grooves on the one side of line layer, 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 LED and the circular groove.
Described driving power is a constant-current driving power supply.
Described lampshade is the lampshade that the nanometer abrasive material is made.
Owing to adopted above-mentioned structure, the 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 fluorescent tube, 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, simultaneously in the production of LED fluorescent tube, reduced by three road manufacturing procedures at least, be suitable for the LED fluorescent tube 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), because " RGB three-primary color LED chip " is potted directly on " metal heat sink ", and the LED fluorescent tube reaches 80000 hours service life, as calculating by 8 hours every days, the theoretical life-span is more than 27 years, be common fluorescent tube 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 fluorescent lamp) unlike other light source, and the recyclable utilization of LED waste products, is real green energy conservation product;
(7), led light source is a kind of high hardness resin illuminator, and lampshade is damaged material easily such as non-glass, so seismic force is higher relatively, the environment temperature adaptive faculty is strong;
(8), the LED fluorescent tube, need not starter and ballast, start soon, power is little, no stroboscopic is not easy visual fatigue, energy-conserving and environment-protective;
(9), the dustproof and waterproof grade that adopts of LED fluorescent tube is up to IP54, LED fluorescent tube light source electrical equipment is integrated, install simple, easy maintenance;
(10), since " RGB three-primary color LED chip " be potted directly on " metal heat sink ", effectively solved the heat dissipation problem of LED fluorescent tube, 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 fluorescent tube;
(11), than energy-conservation more than 70% with traditional fluorescent tube (as fluorescent lamp) of illumination;
(12), 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 fluorescent tube work conducts to shell rapidly;
(13), the constant-current driving power supply of fluorescent tube 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), lampshade adopts nanometer abrasive material, the light free from glare that light fixture sends.
Description of drawings
Fig. 1 is the structural representation of the LED fluorescent tube of high light efficiency and high-color rendering.
Fig. 2 is the sectional view of the LED fluorescent tube 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 depicted in figs. 1 and 2, the LED fluorescent tube of high light efficiency described in the utility model and high-color rendering comprises metal heat sink 1 and lampshade 2, and the two ends of metal heat sink 1 are provided with lamp holder 5, are provided with driving power in the metal heat sink 1.Described metal heat sink 1 is provided with line layer, described metal heat sink 1 is provided with several circular grooves 3, be provided with RGB three-primary color LED chip 4 in the described circular groove 3, be filled with thermal conductive insulation glue between described RGB three-primary color LED chip 4 and the circular groove 3.Metal heat sink 1 is provided with the led chip solder joint 6 that is electrically connected with line layer in the both sides of each circular groove 3, led chip solder joint 6 is electrically connected by lead the two poles of the earth with RGB three-primary color LED chip 4.
The utility model is when concrete encapsulation, circular groove is set on metal heat sink, 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 metal heat sink, the P of RGB three-primary color LED chip, the N utmost point require to make copper foil circuit in metal heat sink 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 metal heat sink become a LED and metal heat sink 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 for outside LED and the metal heat sink firming body → lamp body, the step of only need dispelling the heat together just can solve the heat dissipation problem of LED illuminating 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 fluorescent tube of high light efficiency and high-color rendering, it is characterized in that: comprise metal heat sink (1) and lampshade (2), the two ends of metal heat sink (1) are provided with lamp holder (5), metal heat sink is provided with driving power in (1), described metal heat sink (1) is provided with line layer, described metal heat sink (1) is provided with several circular grooves (3), be provided with RGB three-primary color LED chip (4) in the described circular groove (3), metal heat sink (1) is provided with the led chip solder joint (6) that is electrically connected with line layer in the both sides of each circular groove (3), 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. according to the LED fluorescent tube 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 (4) and the circular groove (3).
3. according to the LED fluorescent tube of described high light efficiency of claim 1 and high-color rendering, it is characterized in that: described driving power is a constant-current driving power supply.
4. according to the LED fluorescent tube of claim 1 or 2 or 3 described high light efficiencies and high-color rendering, it is characterized in that: described lampshade (2) is the lampshade that the nanometer abrasive material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206575921U CN201934966U (en) | 2010-12-14 | 2010-12-14 | LED fluorescent tube high in lighting effect and color rendering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206575921U CN201934966U (en) | 2010-12-14 | 2010-12-14 | LED fluorescent tube high in lighting effect and color rendering |
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| Publication Number | Publication Date |
|---|---|
| CN201934966U true CN201934966U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206575921U Expired - Fee Related CN201934966U (en) | 2010-12-14 | 2010-12-14 | LED fluorescent tube high in lighting effect and color rendering |
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| CN (1) | CN201934966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075715A (en) * | 2011-10-26 | 2013-05-01 | 上舜照明（中国）有限公司 | LED (Light Emitting Diode) lamp housing and application thereof to LED lamp |
-
2010
- 2010-12-14 CN CN2010206575921U patent/CN201934966U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075715A (en) * | 2011-10-26 | 2013-05-01 | 上舜照明（中国）有限公司 | LED (Light Emitting Diode) lamp housing and application thereof to LED lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20121214 |