CN105318211A - High-protection lamp with heat dissipation enhanced by grapheme - Google Patents

Abstract

The invention discloses the technology of a high-protection lamp with heat dissipation enhanced by graphene, and belongs to the technical field of LED illumination. The high-protection lamp is technically characterized in that 3 COB light source small modules 2 are connected in series and fixed to a support 3 to form a 240-degree wide-illumination light source. A power supply driver 6 is arranged in the support 3 to form an integral support. The bottom of the support is fixed to a heat dissipation bottom shell 5 and soaked in sealed cooling liquid 9. The cooling liquid is formed by doping dimethyl silicone oil into graphene. Graphene is also added to a light-transmitting PC cover material, and the heat dissipation performance of PCs is enhanced. The surface of the heat dissipation bottom shell is coated with heat dissipation efficiency increasing paint which is mainly prepared from waterborne hydroxy acrylic resin and graphene. By means of the lamp, adverse effects of water, fog, moisture and the like in the outside world on the lamp are effectively isolated while heat dissipation is enhanced, and the safety protection performance is outstanding.

Description

A kind of height protection light fixture of Graphene enhance heat

(1) technical field

The present invention relates to a kind of height protection light fixture of Graphene enhance heat, belong to technical field of LED illumination.

(2) background technology

LED illumination, due to the physical characteristic of semiconductor, easily by the invasion and attack of the too high and extraneous mist tide of temperature, affects result of use, causes potential safety hazard, even breaks down, and hinders the performance of advantage.Improve protective capacities, improve the structure of light fixture, reduce the impact of unfavorable factor, improving reliability is realize non-maintaining purpose.

The non-maintaining primary condition of LED illumination is light fixture fault-free within the specified operating period, does not also need to safeguard or overhaul.This just requires that the dependability of light fixture is high, and the quality assurance and the probability of failure that causes by extraneous undesirable element that comprise itself are few.High protection light fixture is set about from these two aspects exactly, solves light fixture dependability problem targetedly, and improves the adaptability of light fixture to environment for use.

Along with appearance and the constantly progress of specular removal COB light source chip, it can be placed in immersion or liquid-cooling LED lighting, be a new difficult problem.The very little and caloric value of COB light source chip volume is large, and in lamp, cooling fluid is in natural convection, and heat transfer coefficient is lower, if can not efficiently radiates heat, will burn out light source chip.

(3) summary of the invention

For reaching fault-free, non-maintaining target, improving dependability, needing to carry out from the electrical protection of lamp interior and environmental protection two aspect in the external world.Internal electric protects the technical guarantee mainly manufactured and designed, and comprises light emitting module operating temperature and controls and for light fixture ubiquity power supply short slab problem, protect the requirement being all higher than general light fixture, reach higher electricity index ability to bear.External environment safeguard procedures are, the workpiece such as light source module and driving power, carry out hermetically sealed protection and immersion cooling heat dissipation, avoid the invasion of external environment water, mist, tide, and meet can steady operation under most high ambient temperature.

Inner electrical protection is except manufacturing process guarantee, for solving the power supply short slab problem that LED lamp exists, circuit design double heat radiation two-stage lightning protection overvoltage protection and current constant control, application resonance soft switch circuit, obtain high efficiency, the high-quality circuit structure of low circuit stress, improves the reliability of power work and the abnormal ability to bear of circuit to greatest extent.

Grapheme material has that thermal conductivity is high, structure is frivolous and almost colourless transparent feature, utilize it to come key that enhance heat is reliability.Sealing protection assembly to be covered by the PC of printing opacity and radiator drain pan of holding concurrently combines.Infiltrate Graphene in the PC cover raw material of printing opacity, improve heat transfer and heat dispersion, can partial heat be distributed, the more important thing is that drain pan is held concurrently the surface peening radiating treatment of radiator.The inside is filled with the colourless cooling liquid of heat conductive insulating of graphene-containing, the heat that produces when light emitting module and power supply driver work can be made to be transferred to PC by heat conduction cooling fluid and to cover and radiator is held concurrently shell.The Graphene mixed layer of surface adhesion, increases heat-sinking capability, makes light source and power supply in hermetic container, with the lower temperature difference of external environment, can meet the working condition of heat dissipation balancing.The light that light emitting module sends penetrates colourless cooling fluid efficiently and anti-dazzle PC covers, irradiate outside, reach bright and soft lighting effect, and be applicable to various application scenario, the environment for use that especially humidity, waterproof, explosion-proof etc. requirement of shelter are strict and place.

(4) accompanying drawing explanation

Accompanying drawing is schematic diagram of the present invention.1. for printing opacity PC covers.2. be illuminator module.3. be support.4. be sealed silicon cushion rubber.5. for drain pan is held concurrently radiator.6. be power supply driver.7. be lead-in wire sealed silicon cushion rubber.8. be E27 screw socket.9. be heat conduction cooling fluid, principal component is dimethicone.10. be carbonaceous material, mainly Graphene.

(5) detailed description of the invention

As shown in drawings, 2. external environment protection employing three COB light source modules, by the level interval of 120 °, are fixed on the conical support top 3. that vertical plane becomes 240 °, the light source of composition wide-angle luminescence.Just to light source distance be about 15mm be printing opacity and the PC cover lid that can partly dispel the heat 1..6. the power supply driver of light fixture integration, is fixedly mounted on the centre position in support.5. the root of support and drain pan radiator of holding concurrently is connected and fixed, 5. radiator drain pan of holding concurrently uses aluminium sheet drawing and forming, 1. use screw thread meshing with printing opacity PC cover, 4. joint has sealed silicon cushion rubber, 9. the heat conductive insulating cooling fluid that is impregnated with Graphene is soaked and is fixed on light source on support and power supply, the heat produced is absorbed by cooling fluid and is transmitted to heat radiation drain pan, is dispersed in outside air by drain pan.The principal component of heat conductive insulating cooling fluid is dimethicone.For enhance heat ability, 10. drain pan outer surface adheres to Graphene composite material, and the stack layer of generation forms the micro channel of air.The excellent thermal conductivity of Graphene adds the ride-through capability that the contact area of heat dissipation interface and air and heat break through interface barrier, increases distributing of heat, becomes enhance heat from short Synergistic technique.Lead-in wire sealed silicon cushion rubber is 7. for filling with liquid sealing, and 8. screwed union is plant-grid connection.Waterproof, explosion-proof application requirements water joint.By above-mentioned structural measure, make light fixture can meet the specific operation of heat dissipation balancing in hermetic situation.

Have the humidity of particular/special requirement, waterproof, explosion-proof etc. place to electricity consumption, for reaching the double insulation protection of the insulation crust of laws and regulations requirement, light fixture drain pan is held concurrently radiator, can use heat-conducting plastic compression molding.The Heat Conduction Materials such as the base-material of plastics and Graphene are mixed in proportion, reach certain critical value, pressure injection plastics external morphology produces heat conduction network chain, and is built into microchannel, absorb outside air to exchange with inner heat energy, produce thermal convection current width and penetrate effect, reach the effect of heat conduction and heat radiation, and keep insulating properties, although the capacity of heat transmission is high not as metal, the power of corresponding light fixture will reduce, and equally also can meet thermally equilibrated steady working condition, reaches again the laws and regulations requirement of insulation crust.

Above structure is also applicable to the LED illumination lamp that SMD lamp pearl is light source.

Claims (4)

1. the height protection light fixture of a Graphene enhance heat, its technical characteristic is that COB light source is fixed on above support, power supply driver is arranged in support, frame bottom is fixed on heat radiation drain pan, inside the cooling fluid being immersed in sealing, cooling fluid forms by dimethicone is graphene-doped, and printing opacity PC adds Graphene in covering, and heat radiation drain pan surface scribbles Graphene heat radiation synergy coating.

2. the height protection light fixture of Graphene enhance heat according to claim 1, the quantity of COB light source chip is 1-4 block, evenly distributed on support, forms wide illumination light source.

3. the height protection light fixture of Graphene enhance heat according to claim 1, printing opacity PC covers and heat radiation drain pan is that spiral shell line Tooth closes, and joint has silica gel sealing ring, and wrinkle folding ripple is arranged at the bottom of heat radiation drain pan, forms hermetically sealed printing opacity, the lamp outer casing that can dispel the heat.

4. the height protection light fixture of Graphene enhance heat according to claim 1, the Graphene heat radiation synergy coating that heat radiation drain pan surface scribbles, binding agent used is water-borne acrylic resin, and formal name used at school is hydroxy acid copolymer.