CN202024169U - Light emitting diode (LED) desk lamp convenient to realize heat radiation - Google Patents
Light emitting diode (LED) desk lamp convenient to realize heat radiation Download PDFInfo
- Publication number
- CN202024169U CN202024169U CN2011200586363U CN201120058636U CN202024169U CN 202024169 U CN202024169 U CN 202024169U CN 2011200586363 U CN2011200586363 U CN 2011200586363U CN 201120058636 U CN201120058636 U CN 201120058636U CN 202024169 U CN202024169 U CN 202024169U
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- led
- heat radiation
- desk lamp
- base plate
- aluminium base
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Abstract
The utility model discloses a light emitting diode (LED) desk lamp convenient to realize heat radiation, which comprises a base (1), a support frame (2) and a metal heat radiation element (3), wherein a power supply is arranged in the base, the support frame is connected with the base and the metal heat radiation element, an aluminum base plate (4) is arranged on the metal heat radiation element, a plurality of LED chips (5) are arranged on the aluminum base plate, a circuit layer is arranged on the aluminum base plate, a plurality of circular arc-shaped grooves (6) are arranged on the aluminum base plate, the LED chips are arranged in the circular arc-shaped grooves, the aluminum base plate is provided with LED chip welding points (7) electrically connected with the circuit layer at both sides of each circular arc-shaped groove, and the LED chip welding points are electrically connected with two electrodes of the LED chips through conducting wires. The LED chips are encapsulated into the aluminum base plate for forming an LED and aluminum base plate solidification body, and one heat radiation step is reduced. The LED desk lamp has the advantages that the heat radiation effect is good, the work temperature of the LED chip can be effectively reduced, and a good effect is realized on improving the LED lighting effect and prolonging the service life.
Description
Technical field
The utility model relates to a kind of lighting, specifically is meant a kind of LED desk lamp of convenient heat radiation.
Background technology
LED desk lamp structure mainly is made up of base, support, 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 desk lamp replaces the traditional lighting lamp.
At present, on the market on the substrate (as aluminium base) of the most weld metal material of the LED of all LED desk lamps.The heat radiation approach of whole LED desk 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 desk 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 desk lamp come off.
Radiating treatment has become one of vital challenge in the design of LED desk 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 desk lamp.
The utility model content
The purpose of this utility model is to provide the LED desk lamp that heat transference efficiency is high between a kind of LED and the substrate.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the LED desk lamp of convenient heat radiation, comprise base, support, metal heat sink, be provided with power supply in the base, described support connects base and metal heat sink, be equiped with aluminium base on the described metal heat sink, aluminium base is provided with several led chips, aluminium base is provided with line layer, described aluminium base is provided with several circular grooves, described led chip is arranged in the circular groove, and 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, and the led chip solder joint is electrically connected with the two poles of the earth of led chip by lead.
Be filled with thermal conductive insulation glue between described led chip and the circular groove.
Be provided with thermal conductive insulation glue between described metal heat sink and the aluminium base.
Be equiped with the frosted lampshade on the described metal heat sink.
Owing to adopted above-mentioned structure, the utility model is encapsulated into led chip in the aluminium base, forms LED and aluminium base firming body, and it has following beneficial effect:
(1), because led chip directly is encapsulated on the aluminium base, take the vertical, horizontal radiating treatment, area of dissipation increases, and can effectively solve the drawback of the heat radiation difficulty that LED exists, the junction temperature when having effectively reduced LED work avoids causing the irreversibility light decay.
(2), because " led chip " is potted directly on " aluminium base ", in the production of LED desk lamp, reduced one manufacturing procedure of " LED is welded on the aluminium base ", be suitable for the LED desk lamp and produce in batches.
(3), because " led chip " is potted directly on " aluminium base ", and the LED desk lamp reaches 80000 hours service life, as calculating by 8 hours every days, the theoretical life-span is more than 27 years, be the general lighting lamp 10-20 doubly, even higher.
(4), 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.
(5), 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.
(6), the LED desk lamp switch starts soon, power is little, no stroboscopic is not easy visual fatigue, energy-conserving and environment-protective.
(7), the dustproof and waterproof grade that adopts of LED desk lamp is up to IP54, LED desk lamp light source electrical equipment is integrated, moulding is lightly attractive in appearance, install simple, easy maintenance.
(8), since " led chip " be potted directly on " aluminium base ", effectively solved the heat dissipation problem of LED desk lamp, sustainment rate 〉=96% of sustainment rate 〉=98%, the 10000 hour luminous flux of 5000 hours luminous fluxes of LED desk lamp.
(9), can be more than 70% than conventional table Lantern Festival with illumination.
(10), 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 desk lamp work conducts to shell rapidly.
(11), the constant-current driving power supply of desk lamp 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.
(12), 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 desk lamp of convenient heat radiation.
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 desk lamp of convenient heat radiation described in the utility model comprises base 1, support 2, metal heat sink 3, is provided with power supply in the base 1, and described support 2 connects base 1 and metal heat sink 3.Metal heat sink 3 is made by aluminium, and metal heat sink 3 peripheries are provided with fin.Be equiped with aluminium base 4 on the described metal heat sink 3, be provided with thermal conductive insulation glue between described metal heat sink 3 and the aluminium base 4.Aluminium base 4 is provided with several led chips 5, and aluminium base 4 is made up of line layer (copper foil layer), heat conductive insulating layer and metal-based layer.Described aluminium base 4 is provided with several circular grooves 6, and described led chip 5 is arranged in the circular groove 6, is filled with thermal conductive insulation glue between described led chip 5 and the circular groove 6.Described aluminium base 4 is provided with the led chip solder joint 7 that is electrically connected with line layer in the both sides of each circular groove 6, led chip solder joint 7 is electrically connected by lead the two poles of the earth with led chip 5.Be equiped with the frosted lampshade on the described metal heat sink, the light free from glare that the lampshade of abrasive material can make light fixture send.
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 desk lamp of the utility model substrate, the temperature in the time of can effectively reducing led chip work can play good effect to improving LED light efficiency 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 makes things convenient for the LED desk lamp that dispels the heat, comprise base (1), support (2), metal heat sink (3), base is provided with power supply in (1), described support (2) connects base (1) and metal heat sink (3), be equiped with aluminium base (4) on the described metal heat sink (3), aluminium base (4) is provided with several led chips (5), aluminium base (4) is provided with line layer, it is characterized in that: described aluminium base (4) is provided with several circular grooves (6), described led chip (5) is arranged in the circular groove (6), aluminium base (4) is provided with the led chip solder joint (7) that is electrically connected with line layer in the both sides of each circular groove (6), led chip solder joint (7) is electrically connected by lead the two poles of the earth with led chip (5).
2. according to the LED desk lamp of the described convenient heat radiation of claim 1, it is characterized in that: be filled with thermal conductive insulation glue between described led chip (5) and the circular groove (6).
3. according to the LED desk lamp of claim 1 or 2 described convenient heat radiations, it is characterized in that: be provided with thermal conductive insulation glue between described metal heat sink (3) and the aluminium base (4).
4. according to the LED desk lamp of claim 1 or 2 described convenient heat radiations, it is characterized in that: described metal heat sink is equiped with the frosted lampshade on (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200586363U CN202024169U (en) | 2011-03-08 | 2011-03-08 | Light emitting diode (LED) desk lamp convenient to realize heat radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200586363U CN202024169U (en) | 2011-03-08 | 2011-03-08 | Light emitting diode (LED) desk lamp convenient to realize heat radiation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202024169U true CN202024169U (en) | 2011-11-02 |
Family
ID=44849118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200586363U Expired - Fee Related CN202024169U (en) | 2011-03-08 | 2011-03-08 | Light emitting diode (LED) desk lamp convenient to realize heat radiation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202024169U (en) |
-
2011
- 2011-03-08 CN CN2011200586363U patent/CN202024169U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150308 |
|
| EXPY | Termination of patent right or utility model |