CN201539821U

CN201539821U - Cooling device for LED lamp

Info

Publication number: CN201539821U
Application number: CN 200920181245
Authority: CN
Inventors: 王景慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-30
Filing date: 2009-10-30
Publication date: 2010-08-04
Anticipated expiration: 2019-10-30

Abstract

Disclosed is a cooling device for LED lamp, comprising a cone body made from high heat-conductive materials. The side wall of the cone body is in ladder shape. One side of the cone body is formed with a reflecting face for assembling LED light-emitting element. The heat emission structure of the cooling device can be flexibly expanded as the amount and power of LED element, thus completely releasing the heat quantity of LED element. The cooling device made from light and thin metal materials with good cooling effect not easily results in the glass bulb shell broken up when used for the LED glass bulb, and greatly reduces the weight and volume of the whole lamp when used for metal or plastic lampshade.

Description

The heat abstractor that is used for the LED lamp

Technical field

The utility model relates to the structure of light fixture, specifically is meant a kind of heat abstractor of the LED of being used for lamp.

Background technology

Traditional incandescent lamp bulb mainly is made up of several parts such as filament, glass housing, lamp holders.Incandescent lamp bulb is to make according to the fuel factor principle of electric current, and after bulb connected rated voltage, electric current was heated to incandescent state by filament, thereby it is luminous to generate heat.The tungsten that filament is big by resistivity, fusing point is high is made, and tungsten is a kind of metallic element, easily oxidation, and temperature is high more, and oxidation is fast more, and for preventing tungsten oxidation at high temperature, bulb all is evacuated.In addition, tungsten can also produce the distillation and the phenomenon of sublimating, and therefore the bulb more than 60 watts charges into gases such as nitrogen, argon, can hinder distillation at high temperature.Because the filament temperature in when work is very high, most energy has slatterned with the form of infra-red radiation, and the electric light transformation efficiency is lower, and because filament temperature is very high, evaporate also very fast, so the life-span also big the shortening, greatly about about 1000 hours.

Electricity-saving lamp mainly is to heat to filament by ballast, greatly when the 1160K temperature, filament just begins to launch electronics (because being coated with some electronics powder on filament), the electron collision ar atmo produces inelastic collision, obtain energy after the ar atmo collision and clashed into mercury atom again, mercury atom transition after absorbing energy produces ionization, send the ultraviolet ray of 253.7nm, ultraviolet ray excited light-emitting phosphor, because the temperature of filament is about 1160K during fluorescent lamp operation, temperature 2200K-2700K than incandescent lamp work is much lower, so the also big raising of its life-span reached more than 5000 hours.

The LED light emitting diode is to be made by several layers of very thin doped semiconductor materials, the electronics that one deck band is excessive, another layer be electronics and form " hole " of positively charged for want of, when electric current passes through, electronics and hole mutually combine and give off energy, thereby give off radiance.The LED bulb mainly is to adopt LED to replace the filament of incandescent lamp as light source.Because distribute heat is bigger during LED work, particularly works simultaneously for high-power, a plurality of LED, its caloric value is bigger, must dispel the heat for LED lamp envelope design heat abstractor specially.The heat abstractor of existing LED bulb is one to be connected the radiating seat between lamp holder and cell-shell, this radiating seat generally adopts the aluminium of high thermal conductivity coefficient to make, comprise the cylindrical shell that two ends connect, cylinder body outer wall is provided with into the fin of radial distribution, and the heat that LED sends is distributed by this radiating seat.This kind radiating mode poor effect, and this radiating seat is comparatively heavy with respect to glass shell, makes the glass shell fragmentation easily, has certain potential safety hazard.In addition, the radiating seat that high-capacity LED lamp uses is bulky, more is not suitable for being built in the glass bulb cavity and uses.

The utility model content

The utility model provides a kind of heat abstractor of the LED of being used for lamp, its main purpose is the LED thermal component of built-in efficiently radiates heat under the situation that does not change traditional glass bulb or the existing size of shot-light glass Lamp cup, overcome the bad problem of existing LED lamp heat radiation, realize that life size glass bulb or shot-light glass Lamp cup can install the purpose in more high-power LED lamp source, make the conventional bulb needn't be because of using the design of LED lamp source update all instead with light fixture and shot-light light fixture.

The utility model provides a kind of heat abstractor of the LED of being used for lamp, another main purpose is effectively to solve the heat dissipation problem and the weight issue of high-capacity LED PAR lamp, the LED thermal component of metal or the built-in efficiently radiates heat of nonmetal PAR lamp lamp housing, overcome the bad problem of existing LED PAR lamp heat radiation, radiator structure of the present utility model can be along with the quantity of LED assembly, power and elasticity enlarges area of dissipation, can discharge the heat of LED assembly fully; Therefore the purpose that the PAR lamp can the more high-power LED lamp of implement device source, simultaneously because of the utility model adopts metal material light laminated and that radiating effect is excellent made, even the high-power PAR lamp of 30W, weight does not have the problem of weight gently fully yet

The utility model adopts following technical scheme: be used for the integral heat emission device of LED bulb, comprise a conical surface body of being made by highly heat-conductive material, the sidewall of this conical surface body is stepped, and a side of this conical surface body is formed for assembling the reflective surface of LED luminescence component.

The aforementioned integral heat emission device that is used for the LED bulb, its reflective surface is formed at the medial surface of this conical surface body.

The aforementioned integral heat emission device that is used for the LED bulb, its reflective surface is formed at the lateral surface of this conical surface body.

The bottom surface or the side of each of described reflective surface layer ladder are used to assemble the LED luminescence component, and each side is a taper surface.

The aforementioned integral heat emission device that is used for the LED bulb, the cross section of its conical surface body are circle, triangle or other polygon.

The aforementioned integral heat emission device that is used for the LED bulb, its conical surface body are provided with the through wires hole that passes for the power line that connects LED luminescence component and power supply.

By above-mentioned description to the utility model structure as can be known, compare with prior art, the utlity model has following advantage: one, radiator structure of the present utility model can increase and elasticity expansion area of dissipation along with quantity, the power of LED assembly, therefore can discharge the heat of LED assembly fully; Two, the utility model can adopt light laminated and metal material that radiating effect is excellent is made, when being used for the LED glass bulb, be difficult for making the fragmentation of glass cell-shell, it is the most feasible scheme at the built-in thermal component of glass lamp housing, if when design is used in metal or plastic lamp shade or PAR lamp, the weight of whole lamp body is greatly reduced; Three, when heat abstractor of the present utility model is built in the glass cell-shell, can prolong traditional processing technology with existing incandescent glass bulb, produce easily; Four, the utility model adopts spill ladder thermal component or convex ladder thermal component, and the LED assembly can discharge according to the luminous specification demand of bulb, realize forward 120 ° luminous or to around 360 ° luminous.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the utility model embodiment one;

Fig. 2 is the sectional structure schematic diagram of the utility model embodiment two;

Fig. 3 is the sectional structure schematic diagram of the utility model embodiment three;

Fig. 4 is the external structure schematic diagram of the utility model embodiment three;

Fig. 5 is the sectional structure schematic diagram of the utility model embodiment four;

Fig. 6 is the sectional structure schematic diagram of the utility model embodiment six;

Fig. 7 is the sectional structure schematic diagram of the utility model embodiment seven;

Fig. 8, Fig. 9 are the sectional structure schematic diagram of two other embodiment of the utility model;

Figure 10 is the vertical view or the upward view of the utility model thermal component.

The specific embodiment

The specific embodiment of the present utility model is described with reference to the accompanying drawings.

Embodiment one

Adopt a kind of LED bulb of the utility model heat abstractor,, comprise lamp holder 1, plastic housing 2, glass cell-shell 3, heat abstractor 4, LED luminescence component 5 and be the power module of LED luminescence component 5 power supplies, not shown this power module with reference to Fig. 1.Plastic housing 2 is connected between lamp holder 1 and the glass shell 3, and above-mentioned power module can be arranged in this plastic housing 2, is each LED luminescence component 5 power supply.Heat abstractor 4 is built in this glass cell-shell 3, constitutes a heat transfer cavity 30 between this heat abstractor 4 and this glass cell-shell 3, is filled with heat-conducting medium gas in this heat transfer cavity 30.Each LED luminescence component 5 is sticked on heat abstractor 5 by heat-conducting substrate 51.

With reference to Fig. 1, this heat abstractor 4 is up big and down small conical surface body, its sidewall is stepped, the lateral surface of this conical surface body promptly forms a reflective surface towards the side of glass cell-shell 3, each LED luminescence component 5 is installed on the bottom surface of this each layer of reflective surface ladder, and each bottom surface is provided with the through wires hole that passes for the power line that connects LED luminescence component 5 and power supply.When each LED luminescence component 5 was luminous, its heat that distributes was given heat-conducting medium gas in the heat transfer cavity 30 through heat abstractor 4 conduction, again by the heat-conducting medium gas conduction to glass cell-shell 3, outwards distribute by glass cell-shell 3.

Embodiment two

With reference to Fig. 2, the heat abstractor 4 of present embodiment is basic identical with the structure of embodiment one, each LED luminescence component 5 that difference only is present embodiment is arranged in the side of each layer ladder of the reflective surface of this heat abstractor 4, and the side of each layer ladder is taper surface, thereby its light emission direction is different.

Embodiment three

Adopt a kind of LED shot-light of the utility model heat abstractor, with reference to Fig. 3, comprise the lampshade 6, heat abstractor 4, LED luminescence component 5 of lamp holder 1, metal or plastic material and be the power module of LED luminescence component 5 power supplies, the top of lampshade 6 is provided with power source cavity 61, described power module is installed in this power source cavity 61, not shown this power module.With reference to Fig. 4, described lampshade 6 is provided with louvre 60, is used for the heat that LED luminescence component 5 produces is shed.

Described heat abstractor 4 is installed in the lampshade 6, and lampshade 6 bottom openings are provided with glass cover-plate 7.This heat abstractor 4 is up-small and down-big conical surface body, and the medial surface of this conical surface body i.e. down side forms a reflective surface, and its each LED luminescence component 5 is arranged in the bottom surface of each layer ladder of these heat abstractor 4 reflective surfaces.

Embodiment four

Adopt a kind of LED shot-light of the utility model heat abstractor, with reference to Fig. 5, the structure of its structure and the foregoing description three is basic identical, and difference is that lampshade 6 tops of present embodiment do not have the structure of power source cavity, and the power supply of this LED shot-light adopts external structure.

Embodiment five

Adopt a kind of LED PAR lamp of the utility model heat abstractor, with reference to Fig. 3 and Fig. 5, the main clear glass lamp housing that adopts, the structure and the radiating mode of its internal structure and radiating mode and the foregoing description one are basic identical, difference is the lamp housing moulding difference of two embodiment, the spherical glass lamp housing of embodiment one cooperates convex ladder thermal component, can have concurrently realize downward 120 ° luminous and simultaneously to around 360 ° of luminous effects.The tubaeform glass lamp housing of present embodiment employing cooperates spill ladder thermal component, can concentrate and realize downward 120 ° of luminous effects, avoids running off and distributes part light to the place of shining outside the target area.Present embodiment is fit to apply to Down lamp light fixture and the bulkhead lamp capable and the shot-light light fixture of indoor use.

Embodiment six

Adopt a kind of LED shot-light of the utility model heat abstractor, with reference to Fig. 6, comprise lamp holder 1, heat abstractor 4, LED luminescence component 5 and be the power module of LED luminescence component 5 power supplies, the top of heat abstractor 4 is provided with power source cavity 61, described power module is installed in this power source cavity 61, not shown this power module.This heat abstractor 4 is simultaneously as lampshade.The bottom opening place of heat abstractor 4 is provided with glass cover-plate 7.

The heat that present embodiment discharges each LED luminescence component 5, via heat abstractor 4, just lampshade directly distributes the heat that LED luminescence component 5 produces.Because the heat abstractor 4 of present embodiment is not cover another layer material (glass, metal-back or plastic housing) again as Fig. 3 or Fig. 5 outside the lampshade, can directly abundant and outer gas heat-shift, radiating effect is even more ideal.

Embodiment seven

Adopt a kind of LED shot-light of the utility model heat abstractor, with reference to Fig. 7, the structure of its structure and the foregoing description eight is basic identical, and difference is that heat abstractor 4 tops of present embodiment do not have the structure of power source cavity, and the power supply of this LED shot-light adopts external structure.

With reference to Fig. 8 and Fig. 9, shown other two kinds of structures of the utility model heat abstractor, its difference only is that its ladder number of plies is less, sequencable LED luminescence component negligible amounts is applicable to the LED bulb of lower-wattage.

With reference to Figure 10, more than the cross section of heat abstractor 4 among each embodiment can be circle, equilateral triangle, square, regular pentagon, regular hexagon or other polygon.

Above-mentioned only is the specific embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. be used for the heat abstractor of LED lamp, it is characterized in that: comprise a conical surface body of being made by highly heat-conductive material, the sidewall of this conical surface body is stepped, and a side of this conical surface body is formed for assembling the reflective surface of LED luminescence component.

2. the heat abstractor that is used for the LED lamp as claimed in claim 1 is characterized in that: described reflective surface is formed at the medial surface of this conical surface body.

3. the heat abstractor that is used for the LED lamp as claimed in claim 1 is characterized in that: described reflective surface is formed at the lateral surface of this conical surface body.

4. as claim 2 or the 3 described heat abstractors that are used for the LED lamp, it is characterized in that: the bottom surface of each of described reflective surface layer ladder is used to assemble the LED luminescence component.

5. as claim 2 or the 3 described heat abstractors that are used for the LED lamp, it is characterized in that: the side of each of described reflective surface layer ladder is used to assemble the LED luminescence component, and this each side is a taper surface.

6. the heat abstractor that is used for the LED lamp as claimed in claim 1 is characterized in that: the cross section of described conical surface body is circle, triangle or other polygon.

7. the heat abstractor that is used for the LED lamp as claimed in claim 1 is characterized in that: described conical surface body is provided with the through wires hole that passes for the power line that connects LED luminescence component and power supply.