CN202024136U - Light emitting diode (LED) candle lamp with high lighting effect and high color rendering - Google Patents
Light emitting diode (LED) candle lamp with high lighting effect and high color rendering Download PDFInfo
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- CN202024136U CN202024136U CN2011200556048U CN201120055604U CN202024136U CN 202024136 U CN202024136 U CN 202024136U CN 2011200556048 U CN2011200556048 U CN 2011200556048U CN 201120055604 U CN201120055604 U CN 201120055604U CN 202024136 U CN202024136 U CN 202024136U
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Abstract
The utility model discloses a light emitting diode (LED) candle lamp with a high lighting effect and high color rendering, which comprises a lamp shade, an LED chip, a metal heat radiation element and a lamp head, wherein the lamp shade is in a burning flame shape, the LED chip is an LED chip with three primary colors: red, green and blue, an installing groove is arranged on the metal heat radiation element, the LED chip is arranged in the installing groove, the LED chip and the metal heat radiation element are bonded through heat conducting insulation glue, two LED chip welding points are arranged at the side edge of the installing groove, the LED chip welding points are arranged on a circuit of the metal heat radiation element, and two electrodes of the LED chip are respectively and electrically connected with the two LED chip welding points through welding wires. The LED candle lamp has the advantages of high color rendering, high lighting effect, long service life, energy saving and environment protection.
Description
Technical field
The utility model relates to a kind of candle lamp, the LED candle lamp of especially a kind of high light efficiency and high-color rendering.
Background technology
Owing to adopt candle as light emitting source, in use exist certain disaster hidden-trouble, so electric light occurred, its illuminator generally is the vacuum bulb that adopts tungsten filament, and the problem that this illuminator exists is that power consumption is big, and service life is short.
Because the LED lamp is a 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 a kind of green energy conservation product; Also be 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, and starts soon, and power is little, and no stroboscopic is not easy visual fatigue, so the LED lamp is widely used in the every field.
At present, on the market on the substrate (as aluminium base) of the most weld metal material of the LED of all LED candle lamps.The heat radiation approach of whole candle 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, and causes collector current to increase, junction temperature is further raise, finally cause LED to lose efficacy.In addition, the LED candle 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 candle lamp come off.
The Heat Conduction Material that the LED candle lamp adopts in heat radiation, 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 candle 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, lowers efficiency, even quits work.So heat dissipation problem is the most scabrous key of LED candle lamp.
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.
Therefore, be necessary the LED candle lamp is improved, with further raising light efficiency and colour rendering.。
Summary of the invention
The purpose of this utility model provides the LED candle lamp of a kind of high light efficiency and high-color rendering.
For achieving the above object, the technical scheme that the utility model adopted is:
The LED candle lamp of a kind of high light efficiency and high-color rendering, comprise lampshade, led chip, metal heat sink and lamp holder, this lampshade be shaped as combustion flame, described led chip is a red, green, blue three-primary color LED chip, on metal heat sink, be provided with and mounting groove, led chip is contained in the mounting groove, be bonded by thermal conductive insulation glue between led chip and the metal heat sink, side at mounting groove is provided with two led chip solder joints, this led chip solder joint is located on the circuit of metal heat sink, and the two poles of the earth of led chip are electrically connected with two led chip solder joints by bonding wire respectively.
The shape of described led chip is a disk, mounting groove be shaped as circular arc.
Described lamp holder is a lamp screw base.
Described led chip solder joint symmetry is located at the dual-side of mounting groove.
The two poles of the earth of described led chip are connected with the led chip solder joint by gold thread respectively.
Described led chip has six, and they are evenly distributed on the metal heat sink.
After the utility model adopts said structure, by the lampshade of flame moulding is set, and adopt the LDE lamp of forming by red, green, blue three-primary color LED chip and metal heat sink, adopt red, green, blue three-primary color LED chip, the proportioning of red, green, blue three primary colours can be regulated, versicolor light can be obtained; Efficient height, use owing to luminous all from three kinds of LED of red, green, blue, do not need to carry out the spectrum conversion flexibly, so its energy loss minimum, and be most effective; Simultaneously because the RGB three-primary color LED can be luminous separately, and its luminous intensity can regulate separately, so have higher flexibility; Colour rendering index Ra is respectively the white light more than 80～89 and 90.Simultaneously " red, green, blue three-primary color LED chip " is encapsulated in " metal heat sink ", forms " LED and metal heat sink firming body ", shorten the heat radiation approach, improved light fixture radiating effect and colour rendering.RGB three-primary color LED chip takes distributed layout on same metal heat sink, 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; Because " RGB three-primary color LED chip " is potted directly on " metal heat sink ", can saves raw material such as aluminium base and heat-conducting silicone grease, in the production of LED Projecting Lamp, reduced by three road manufacturing procedures at least simultaneously, be suitable for the LED Projecting Lamp and produce in batches; Adopt " RGB three-primary color LED chip " to be potted directly on " metal heat sink ", 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 occur, can solve the problem of colour temperature drift effectively; Reach 80000 hours its service life; Because " led chip " is potted directly on " metal heat sink ", effectively solved the heat dissipation problem of LED Projecting Lamp, improve the LED luminous efficiency, sustainment rate 〉=98% of 5000 hours luminous fluxes of LED Projecting Lamp, the sustainment rate of 10000 hours luminous fluxes 〉=96%, more energy-conservation more than 70% than traditional Projecting Lamp with illumination.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 partly cuts open structure chart for the utility model;
Fig. 2 is the enlarged drawing of the utility model LED lamp and metal heat sink.
Among the figure: 1 lampshade, 2 LED lamps, 2LED chip, 3 metal heat sink, 31 mounting grooves, 4 lamp holders, 5 thermal conductive insulation glues, 6LED chip welding spot, 7 bonding wires.
The specific embodiment
Shown in Fig. 1 and 2, the LED candle lamp of high light efficiency of the present utility model and high-color rendering, comprise lampshade 1, led chip 2, metal heat sink 3 and lamp holder 4, led chip 2 and metal heat sink 3 are located in the lampshade 1, this lampshade 1 be shaped as combustion flame, in the technical program, led chip 2 is red, green, blue three-primary color LED chip, on metal heat sink 3, be provided with and mounting groove 31, led chip 2 is contained in the mounting groove 31, be bonded by thermal conductive insulation glue 5 between led chip 2 and the metal heat sink 3, side at mounting groove 31 is provided with two led chip solder joints 6, two led chip solder joint 6 symmetries are established on the metal heat sink 3 of mounting groove 31 dual-sides, and the two poles of the earth of led chip 2 are electrically connected with led chip solder joint 6 by bonding wire 7 respectively.In the present embodiment, the shape of led chip 2 is disks, and the shape of mounting groove 31 corresponds to circular arc, and led chip 2 also can be the square shape sheet shape, adopts six led chips 2, and they are evenly distributed on the metal heat sink.Mounting groove 221 be shaped as circular arc.Lamp holder 4 adopts lamp screw base, adapts with existing light fixture head.Preferably the two poles of the earth of led chip 21 are connected with led chip solder joint 24 by gold thread respectively.
Adopt the red, green, blue three primary colours to mix luminous intensity distribution, add the fluorescent material technology with traditional blue light and compare its light efficiency height, the colour rendering index height, light decay is low, and the colour temperature drift is little.Regulate the proportioning of RGB three primary colours, can obtain versicolor light.And efficient height, use are flexibly, since luminous all from three kinds of LED of red, green, blue, do not need to carry out the spectrum conversion, so its energy loss minimum, most effective.Simultaneously because the RGB three-primary color LED can be luminous separately, and its luminous intensity can regulate separately, so have higher flexibility.Colour rendering index Ra is respectively the white light more than 80～89 and 90.
Take the LED candle lamp of this structure, " RGB three-primary color LED chip " directly is encapsulated on " metal heat sink ", can save attachment-aluminium base of LED, can effectively shorten the heat radiation approach like this, improves lamp luminescence efficient effectively.Compare with " LED → pcb board (aluminium base) → thermal conductive insulation glue → metal shell → lamp body is outer " heat radiation approach of traditional LED lamp, the heat radiation approach that adopts LED candle lamp of the present utility model is " LED is outer with the metal heat sink firming body → lamp body " step of only need dispelling the heat.Because " RGB three-primary color LED chip " directly is encapsulated on " metal heat sink ", takes the vertical, horizontal radiating treatment, area of dissipation increases, can effectively solve the drawback of the heat radiation difficulty of LED existence, junction temperature when having effectively reduced LED work, the light efficiency height avoids causing the irreversibility light decay; In the production of LED candle lamp, reduced by three road manufacturing procedures at least, be suitable for the LED candle lamp and produce in batches; 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; The LED candle lamp reaches 80000 hours service life, and as calculating by 8 hours every days, the theoretical life-span is 10-20 a times of common candle lamp more than 27 years, even higher.
LED candle lamp of the present utility model is widely used in window displaying, decorative lighting, sentiment illumination, the illumination of bar desktop, dinner party illumination etc.
Claims (6)
1. the LED candle lamp of high light efficiency and high-color rendering, comprise lampshade (1), led chip (2), metal heat sink (3) and lamp holder (4), it is characterized in that: this lampshade (1) be shaped as combustion flame, described led chip (2) is red, green, blue three-primary color LED chip, on metal heat sink (3), be provided with and mounting groove (31), led chip (2) is contained in the mounting groove (31), be bonded by thermal conductive insulation glue (5) between led chip (2) and the metal heat sink (3), side at mounting groove (31) is provided with two led chip solder joints (6), this led chip solder joint (6) is located on the circuit of metal heat sink (3), and the two poles of the earth of led chip are electrically connected with two led chip solder joints (6) by bonding wire (7) respectively.
2. the LED candle lamp of high light efficiency according to claim 1 and high-color rendering is characterized in that: the shape of described led chip (2) is a disk, mounting groove (31) be shaped as circular arc.
3. the LED candle lamp of high light efficiency according to claim 1 and high-color rendering is characterized in that: described lamp holder (4) is a lamp screw base.
4. the LED candle lamp of high light efficiency according to claim 1 and high-color rendering is characterized in that: described led chip (2) solder joint symmetry is located at the dual-side of mounting groove (31).
5. the LED candle lamp of high light efficiency according to claim 1 and high-color rendering is characterized in that: the two poles of the earth of described led chip (2) are connected with led chip solder joint (6) by gold thread respectively.
6. the LED candle lamp of high light efficiency according to claim 1 and high-color rendering is characterized in that: described led chip (2) has six, and they are evenly distributed on the metal heat sink (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200556048U CN202024136U (en) | 2011-03-04 | 2011-03-04 | Light emitting diode (LED) candle lamp with high lighting effect and high color rendering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200556048U CN202024136U (en) | 2011-03-04 | 2011-03-04 | Light emitting diode (LED) candle lamp with high lighting effect and high color rendering |
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| Publication Number | Publication Date |
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| CN202024136U true CN202024136U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200556048U Expired - Fee Related CN202024136U (en) | 2011-03-04 | 2011-03-04 | Light emitting diode (LED) candle lamp with high lighting effect and high color rendering |
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| CN (1) | CN202024136U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809073A (en) * | 2012-07-10 | 2012-12-05 | 苏州晶雷光电照明科技有限公司 | LED (Light Emitting Diode) decorative lamp |
-
2011
- 2011-03-04 CN CN2011200556048U patent/CN202024136U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809073A (en) * | 2012-07-10 | 2012-12-05 | 苏州晶雷光电照明科技有限公司 | LED (Light Emitting Diode) decorative lamp |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20150304 |
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| EXPY | Termination of patent right or utility model |