CN113105808A

CN113105808A - Self-cooling heat-conducting coating for LED lamp

Info

Publication number: CN113105808A
Application number: CN202110073991.6A
Authority: CN
Inventors: 颜志兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-07-13

Abstract

The invention discloses a self-cooling heat-conducting coating for an LED lamp, which belongs to the technical field of heat-conducting coatings, can improve the heat conducting property of a coating by improving the raw materials of the coating, simultaneously improve the forming strength of the coating, innovatively introduce self-cooling microspheres into the coating, can continuously absorb heat in the heat-conducting coating, then conduct the heat to single-point thermal expansion balls inside, thereby triggering the directional expansion action of the single-point thermal expansion balls, extrude water-containing sponge containing water to force the water-containing sponge to release partial water, gather the water through a water containing cover until the water completely flows down to be mixed with saltpeter powder, absorb a large amount of heat to freeze when the water-containing sponge is dissolved in water, thereby quickly cooling the surrounding coating environment, indirectly achieving the purpose of heat dissipation through a heat absorption mode, and simultaneously can recycle the saltpeter powder and the water after ice blocks are melted and evaporated, the independent cooling can be continuously realized, and the heat dissipation effect of the coating is improved.

Description

Self-cooling heat-conducting coating for LED lamp

Technical Field

The invention relates to the technical field of heat-conducting coatings, in particular to a self-cooling heat-conducting coating for an LED lamp.

Background

The LED display screen is a flat panel display, is composed of small LED module panels, is used for displaying various information such as characters, images, videos, video signals and the like, and can really play a role in displaying only by a backboard. In the prior art, aluminum magnesium alloy is generally adopted as an LED backboard.

According to the characteristics of the aluminum-magnesium alloy, the LED back plate has the advantages that: 1. corrosion resistance; 2. high strength; 3. the electromagnetic shielding performance is excellent; 4. coloring is easier compared to other aluminum-based materials; 5. good thermal conductivity; 6. has certain impact resistance.

But it has the limitations brought by the material itself: 1. the thermal conductivity is lower than that of materials such as pure aluminum, magnesium-based alloy and the like, and when the material is applied to a cold light LED, the problem of heat dissipation exists when the LED is in a high-temperature environment (because the aluminum-magnesium-containing alloy is not heat-resistant, and is volatile or even burnt out); 2. the brittleness is large, the fatigue performance is poor, and the material is easy to break under the action of large impact force or periodic cyclic stress; 3. the heat dissipation of the heat generated by the LED material is most important by air conduction (rather than conventionally thought to be radiation and light energy conversion, since most of the radiant heat still exists in the LED element, the light energy conversion is the same), and the poor formability of the al-mg alloy makes it more costly to make a micro heat sink structure suitable for convection with air.

Adopt the form of heat conduction coating to assist the backplate to carry out high-efficient heat dissipation among the prior art, but the radiating effect is very limited, can not reach the calorifacient efficiency of backplate far away, and especially when to the LED lamp of airtight encapsulation, its heat distributes more limitedly, can't satisfy the heat dissipation demand of almag backplate.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a self-cooling heat-conducting coating for an LED lamp, which can improve the heat conducting property of a coating by improving the raw materials of the coating, improve the forming strength of the coating, innovatively introduce self-cooling microspheres embedded in the coating, continuously absorb heat in the heat-conducting coating, and then conduct the heat to internal single-point thermal expansion balls so as to trigger the directional expansion action of the single-point thermal expansion balls, extrude water-containing sponge containing moisture to force the water-containing sponge to release partial moisture, gather the moisture through a water containing cover, continuously store the moisture to a certain amount under the accumulation action of an upper arc water collecting plate, continuously move downwards under the action of gravity until the moisture completely flows down to be mixed with saltpeter powder, absorb a large amount of heat to freeze when dissolved in water, and further quickly cool the surrounding coating environment, the mode through the absorption heat comes indirect radiating purpose that reaches, melts and can carry out recycle with moisture after the evaporation at the ice-cube simultaneously, and the realization that can be the continuation is independently cooled down, improves the coating radiating effect.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A self-cooling heat-conducting coating for an LED lamp comprises the following raw materials in parts by weight: 30-40 parts of epoxy resin, 40-50 parts of graded heat-conducting filler, 0.5-1 part of dispersing agent, 15-25 parts of diluent, 0.2-0.4 part of curing agent, 1-9 parts of silicon carbide and 10-20 parts of self-cooling microspheres.

Further, the graded heat-conducting filler is one or more of aluminum powder, ceramic powder, graphene powder, titanium dioxide, zinc phosphate, talcum powder, barium sulfate, calcium carbonate and mica iron oxide, and the particle size distribution interval is 5-30 μm.

Further, the dispersing agent is a styrene block copolymer.

Further, the diluent is a mixture of butyl ester, xylene and propylene glycol methyl ether acetate, and the mass percentage of the diluent is as follows: the butyl ester accounts for 30-50%, the dimethylbenzene accounts for 10-50%, and the propylene glycol methyl ether acetate accounts for 20-60%.

Further, the curing agent is polyamide 651.

Furthermore, the self-cooling microspheres comprise heat collecting hemispheres and delay hemispheres, the heat collecting hemispheres are symmetrically connected with the delay hemispheres, water-containing sponge is connected between the heat collecting hemispheres and the delay hemispheres, the lower end of the water-containing sponge is connected with a plurality of uniformly distributed single-point thermal expansion balls, a water containing cover is connected in the heat collecting hemispheres, the lower ends of the single-point thermal expansion balls are connected with heat conducting wires, the heat conducting wires sequentially penetrate through the water containing cover and the heat collecting hemispheres and extend to the outside, saltpeter powder is filled at the bottom sides of the water containing cover, the heat conducting wires absorb heat from the heat conducting coating and then conduct to the single-point thermal expansion balls, the directional expansion action of the single-point thermal expansion balls is triggered, the water containing sponge is squeezed to release moisture, then the moisture is mixed with the saltpeter powder after the gathering of the water containing cover, and.

Further, the water containing cover includes the section of catchmenting that the section of catchmenting, the unchangeable ponding section of internal diameter and the section of draining of internal diameter grow gradually that the internal diameter of a plurality of single-point thermal expansion balls are little down in proper order and contain, ponding section sliding connection has last arc catchment board, go up arc catchment board and gather and be connected with many elastic support between the hot hemisphere, gather the moisture that the section fully gathers the moisture that contains water sponge release, then carry to the last arc catchment board of ponding section, along with the increase of water yield, go up arc catchment board and begin to sink down until reaching the section of catchmenting, ponding is whole to flow down and mix and realize the cooling, goes up arc catchment board and can avoid the water yield too little and freeze the back with the saltpeter powder contact and hinder and continue to dissolve, lead to the cooling effect relatively poor, and go up arc catchment board gathering to the disposable.

Further, gather hot hemisphere and adopt the heat conduction material to make, the time delay hemisphere intussuseption is filled with phase transition and stores up cold material, gathers hot hemisphere and can gather heat and dissolve and evaporate the ice-cube to retrieve moisture with, and the time delay hemisphere can be in normal condition heat-retaining can offset partial cold volume, avoids once only cooling too much to cause the interference to the normal work of LED lamp, also can store cold volume continuation cooling simultaneously, improves the constancy of cooling, realizes the protection to the LED lamp when effectively radiating.

Further, single-point thermal expansion ball includes heat conduction hemisphere and thermal-insulated hemisphere, and heat conduction hemisphere and thermal-insulated hemisphere symmetric connection, crowded water hole has been seted up to thermal-insulated hemisphere upper end, sliding connection has the pressurized kicking block in the crowded water hole, it has the heating honeycomb piece to fill between heat conduction hemisphere and the thermal-insulated hemisphere, the cladding of heating honeycomb piece outer end has the cladding air film, and the cladding air film is connected with the pressurized kicking block, and the heat conduction hemisphere absorbs the heat that the conduction of conducting wire comes, heats the heating honeycomb piece, then the inside air inflation of being heated, and the cladding air film only can follow crowded water hole department inflation jack-up pressurized kicking block simultaneously, and then extrudees the release moisture to the sponge that contains water.

Further, the heat conduction hemisphere adopts the stereoplasm heat conduction material to make, thermal-insulated hemisphere and pressurized kicking block all adopt stereoplasm heat insulation material to make, the honeycomb structure is made to heating honeycomb piece adoption elastic heat conduction material, and the heat conduction hemisphere can fully absorb the heat that the conduction of heat conduction silk comes, and thermal-insulated hemisphere then completely cuts off heat direct conduction to the moisture sponge and leads to inside evaporation of water to influence subsequent extrusion release water's effect, the honeycomb structure of heating honeycomb piece can be abundant heat the inside air, improves the inflation effect of air, guarantees the extrusion effect of pressurized kicking block to the moisture sponge.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme can improve the raw materials of the coating, improve the heat conduction performance of the coating, improve the forming strength of the coating, innovatively introduce self-cooling microspheres to be pre-embedded in the coating, continuously absorb heat in the heat conduction coating and then conduct the heat to the single-point thermal expansion balls inside, thereby triggering the directional expansion action of the single-point thermal expansion balls, extruding the water-containing sponge containing water to force the water-containing sponge to release partial water, gathering the water through the water containing cover, continuously storing the water to a certain amount under the gathering action of the upper arc water collecting plate, continuously moving downwards under the action of gravity until the water completely flows down to be mixed with the niter powder, and the niter powder can absorb a large amount of heat to freeze when dissolved in water, thereby quickly cooling the surrounding coating environment and indirectly achieving the purpose of heat dissipation through the heat absorption mode, meanwhile, the saltpeter powder and the moisture can be recycled after the ice blocks are melted and evaporated, the independent cooling can be realized continuously, and the heat dissipation effect of the coating is improved.

(2) The self-cooling microsphere comprises a heat collecting hemisphere and a delay hemisphere, the heat collecting hemisphere is symmetrically connected with the delay hemisphere, a water-containing sponge is connected between the heat collecting hemisphere and the delay hemisphere, the lower end of the water-containing sponge is connected with a plurality of uniformly distributed single-point thermal expansion balls, a water containing cover is connected in the heat collecting hemisphere, the lower end of the single-point thermal expansion ball is connected with a heat conducting wire, the heat conducting wire sequentially penetrates through the water containing cover and the heat collecting hemisphere and extends to the outside, the bottom side of the water containing cover is filled with saltpeter powder, the heat conducting wire absorbs heat from a heat conducting coating and then conducts to the single-point thermal expansion balls, the directional expansion action of the single-point thermal expansion balls is triggered, the water-containing sponge is squeezed to release moisture, then the moisture is mixed with the saltpeter powder after gathering through the water containing cover.

(3) The water containing cover comprises a water collecting section with a large upper part and a small lower part and containing a plurality of single-point thermal expansion balls, a water discharging section with an unchanged inner diameter and a gradually increased inner diameter, an upper arc water collecting plate is connected in the water collecting section in a sliding manner, a plurality of elastic supporting rods are connected between the upper arc water collecting plate and the heat collecting hemispheres, water released by water-containing sponge is fully gathered in the water collecting section, then the water is conveyed to the upper arc water collecting plate in the water collecting section, along with the increase of water quantity, the upper arc water collecting plate begins to sink until reaching the water discharging section, the accumulated water flows down completely and is mixed with saltpeter powder to realize cooling, the upper arc water collecting plate can avoid the water quantity from being too little and contacting the saltpeter powder to freeze and then being blocked to be dissolved, the cooling effect is poor, and the upper arc water collecting plate gathers to the water with sufficient.

(4) Gather hot hemisphere and adopt the heat conduction material to make, the time delay hemisphere intussuseption is filled with phase transition and stores up cold material, gather hot hemisphere and can gather heat and dissolve and evaporate the ice-cube, thereby retrieve moisture with, and the time delay hemisphere can be in normal condition heat-retaining can offset partial cold volume, avoid once only cooling too much to cause the interference to the normal work of LED lamp, also can store cold volume continuation cooling simultaneously, improve the constancy of cooling, realize the protection to the LED lamp when effectively radiating.

(5) Single-point thermal energy ball includes heat conduction hemisphere and thermal-insulated hemisphere, and heat conduction hemisphere and thermal-insulated hemisphere symmetric connection, crowded water hole has been seted up to thermal-insulated hemisphere upper end, sliding connection has the pressurized kicking block in the crowded water hole, it has the heating honeycomb piece to fill between heat conduction hemisphere and the thermal-insulated hemisphere, the cladding of heating honeycomb piece outer end has the cladding gas membrane, and the cladding gas membrane is connected with the pressurized kicking block, the heat that the conduction of heat conduction silk comes is absorbed to the heat conduction hemisphere, heat the heating honeycomb piece, then the inside air inflation of being heated, the cladding gas membrane only can follow crowded water hole department inflation jack-up pressurized kicking block simultaneously, and then extrude release moisture to the sponge that contains water.

(6) The heat conduction hemisphere adopts the stereoplasm heat conduction material to make, thermal-insulated hemisphere and pressurized kicking block all adopt stereoplasm heat insulation material to make, the honeycomb structure is made to heating honeycomb piece adoption elastic heat conduction material, the heat conduction hemisphere can fully absorb the heat that the conduction of conducting wire comes, thermal-insulated hemisphere then completely cuts off heat direct conduction to the moisture sponge and leads to inside moisture evaporation, thereby influence the effect of subsequent extrusion release water, the honeycomb structure of heating honeycomb piece can be abundant heat the inside air, the expansion effect of air is improved, guarantee the extrusion effect of pressurized kicking block to the moisture sponge.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a self-cooling microsphere in a normal state according to the present invention;

FIG. 3 is a schematic structural diagram of a single-point thermal expansion ball according to the present invention;

FIG. 4 is a schematic structural diagram of the self-cooling microspheres of the present invention in a cooling state;

FIG. 5 is a schematic view of the structure of the moisture change of the present invention.

The reference numbers in the figures illustrate:

1 heat-collecting hemisphere, 2 time-delay hemisphere, 3 water-containing sponge, 4 water-containing cover, 5 heat-conducting wire, 6 single-point thermal expansion ball, 61 heat-conducting hemisphere, 62 heat-insulating hemisphere, 63 pressed top block, 64 coated air film, 65 heating honeycomb sheet, 7 upper arc water-collecting plate and 8 elastic supporting rod.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1, a self-cooling heat-conducting coating for an LED lamp includes the following raw materials in parts by weight: 30 parts of epoxy resin, 40 parts of graded heat-conducting filler, 0.5 part of dispersant, 15 parts of diluent, 0.2 part of curing agent, 1 part of silicon carbide and 10 parts of self-cooling microspheres.

The grading heat-conducting filler is one or more of aluminum powder, ceramic powder, graphene powder, titanium dioxide, zinc phosphate, talcum powder, barium sulfate, calcium carbonate and mica iron oxide, and the particle size distribution interval is 5-30 mu m.

The dispersant is a styrene block copolymer.

The diluent is a mixture of butyl ester, xylene and propylene glycol monomethyl ether acetate, and comprises the following components in percentage by mass: the butyl ester accounts for 30-50%, the dimethylbenzene accounts for 10-50%, and the propylene glycol methyl ether acetate accounts for 20-60%.

The curing agent is polyamide 651.

Referring to fig. 2 and 4, the self-cooling microsphere includes a heat collecting hemisphere 1 and a delay hemisphere 2, the heat collecting hemisphere 1 is symmetrically connected to the delay hemisphere 2, a water-containing sponge 3 is connected between the heat collecting hemisphere 1 and the delay hemisphere 2, the lower end of the water-containing sponge 3 is connected to a plurality of uniformly distributed single-point thermal expansion balls 6, a water containing cover 4 is connected to the heat collecting hemisphere 1, the lower end of the single-point thermal expansion ball 6 is connected to a heat conducting wire 5, the heat conducting wires 5 sequentially penetrate through the water containing cover 4 and the heat collecting hemisphere 1 and extend to the outer side, saltpeter powder 9 is filled at the bottom side of the water containing cover 4, the heat conducting wires 5 absorb heat from the heat conducting coating and then conduct the heat to the single-point thermal expansion ball 6 to trigger the directional expansion action of the single-point thermal expansion ball 6, the water-containing sponge 3 is squeezed to release water, and then the water is gathered by the water containing cover 4 and then mixed with the saltpeter powder 9, and the temperature is reduced by the characteristic that the water of the saltpeter powder 9 absorbs heat.

It includes the section of catchmenting that the water cover 4 includes a plurality of single-point thermal expansion balls 6 big-end-up in proper order and contains, the section of catchmenting of unchangeable ponding of internal diameter and the section of catchmenting of internal diameter grow gradually, ponding section sliding connection has last arc catchment board 7, it is connected with many elastic support rods 8 to go up between arc catchment board 7 and the heat-collecting hemisphere 1, gather the moisture that the section fully gathers the water-containing sponge 3 and release, then carry to the last arc catchment board 7 of ponding section, along with the increase of water yield, it begins to sink down until reaching the section of catchmenting to go up arc catchment board 7, ponding is whole to flow down and mixes the realization cooling with niter powder 9, go up arc catchment board 7 can avoid the water volume too little and icing back hindrance to continue dissolving with niter powder 9 contact, lead to the cooling effect relatively poor, and go up arc catchment board 7 gathering.

Please refer to fig. 5, the heat collecting hemisphere 1 is made of a heat conducting material, the delay hemisphere 2 is filled with a phase change cold storage material, the heat collecting hemisphere 1 can collect heat to heat, dissolve and evaporate the ice block, thereby recovering the water and the saltpeter powder 9, the delay hemisphere 2 can store heat in a normal state to offset part of cold energy, so as to avoid interference to normal work of the LED lamp caused by excessive one-time cooling, and meanwhile, can store cold energy for continuous cooling, improve the constancy of cooling, and protect the LED lamp while effectively radiating heat.

Referring to fig. 3, the single-point thermal expansion ball 6 includes a heat-conducting hemisphere 61 and a heat-insulating hemisphere 62, the heat-conducting hemisphere 61 and the heat-insulating hemisphere 62 are symmetrically connected, a water squeezing hole is formed in the upper end of the heat-insulating hemisphere 62, a pressure-bearing top block 63 is slidably connected in the water squeezing hole, a heating honeycomb sheet 65 is filled between the heat-conducting hemisphere 61 and the heat-insulating hemisphere 62, the outer end of the heating honeycomb sheet 65 is coated with a covering air film 64, the covering air film 64 is connected with the pressure-bearing top block 63, the heat-conducting hemisphere 61 absorbs heat conducted by the heat-conducting wire 5, the heating honeycomb sheet 65 is heated, then the internal air is heated to expand, meanwhile, the covering air film 64 can only jack up the pressure-bearing top block 63 from the water squeezing hole.

Heat conduction hemisphere 61 adopts the stereoplasm heat conduction material to make, thermal-insulated hemisphere 62 and pressurized kicking block 63 all adopt stereoplasm heat insulation material to make, heating honeycomb piece 65 adopts elastic heat conduction material to make cellular structure, heat conduction hemisphere 61 can fully absorb the heat that the conduction of heat conduction silk 5 comes, thermal-insulated hemisphere 62 then isolated heat direct conduction leads to inside moisture evaporation to moisture sponge 3, thereby influence the effect of subsequent extrusion release water, the cellular structure that heats honeycomb piece 65 can be abundant heats inside air, the expansion effect of air is improved, guarantee the extrusion effect of pressurized kicking block 63 to moisture sponge 3.

Example 2:

referring to fig. 1, a self-cooling heat-conducting coating for an LED lamp includes the following raw materials in parts by weight: 35 parts of epoxy resin, 45 parts of graded heat-conducting filler, 0.8 part of dispersant, 20 parts of diluent, 0.3 part of curing agent, 5 parts of silicon carbide and 15 parts of self-cooling microspheres.

The remainder was in accordance with example 1.

Example 3:

referring to fig. 1, a self-cooling heat-conducting coating for an LED lamp includes the following raw materials in parts by weight: 40 parts of epoxy resin, 50 parts of graded heat-conducting filler, 1 part of dispersant, 25 parts of diluent, 0.4 part of curing agent, 9 parts of silicon carbide and 20 parts of self-cooling microspheres.

The remainder was in accordance with example 1.

The invention can improve the heat conductivity of the coating by improving the raw materials of the coating, improve the forming strength of the coating, innovatively introduce self-cooling microspheres to be pre-embedded in the coating, the self-cooling microspheres can continuously absorb heat in the heat-conducting coating and then conduct the heat to the single-point thermal expansion balls 6 in the coating, thereby triggering the directional expansion action of the single-point thermal expansion balls 6, extruding the water-containing sponge 3 containing water to force the water-containing sponge 3 to release partial water, gathering the water through the water containing cover 4, continuously storing the water to a certain amount under the accumulation action of the upper arc water collecting plate 7, continuously moving the water downwards under the action of gravity until the water completely flows down to be mixed with the saltpeter powder 9, and the saltpeter powder 9 can absorb a large amount of heat to freeze when being dissolved in the water, thereby quickly cooling the surrounding coating environment, and indirectly achieving the purpose of heat dissipation through the heat absorption mode, meanwhile, after the ice blocks are melted and evaporated, the saltpeter powder 9 and the moisture can be recycled, the automatic cooling can be realized continuously, and the heat dissipation effect of the coating is improved.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a LED lamp is with heat conduction coating from cooling down which characterized in that: the material comprises the following raw materials in parts by weight: 30-40 parts of epoxy resin, 40-50 parts of graded heat-conducting filler, 0.5-1 part of dispersing agent, 15-25 parts of diluent, 0.2-0.4 part of curing agent, 1-9 parts of silicon carbide and 10-20 parts of self-cooling microspheres.

2. The self-cooling heat-conducting coating for the LED lamp according to claim 1, characterized in that: the grading heat-conducting filler is one or more of aluminum powder, ceramic powder, graphene powder, titanium dioxide, zinc phosphate, talcum powder, barium sulfate, calcium carbonate and mica iron oxide, and the particle size distribution interval is 5-30 mu m.

3. The self-cooling heat-conducting coating for the LED lamp according to claim 1, characterized in that: the dispersing agent is a styrene block copolymer.

4. The self-cooling heat-conducting coating for the LED lamp according to claim 1, characterized in that: the diluent is a mixture of butyl ester, xylene and propylene glycol monomethyl ether acetate, and comprises the following components in percentage by mass: the butyl ester accounts for 30-50%, the dimethylbenzene accounts for 10-50%, and the propylene glycol methyl ether acetate accounts for 20-60%.

5. The self-cooling heat-conducting coating for the LED lamp according to claim 1, characterized in that: the curing agent is polyamide 651.

6. The self-cooling heat-conducting coating for the LED lamp according to claim 1, characterized in that: the self-cooling microsphere comprises a heat collecting hemisphere (1) and a time delay hemisphere (2), the heat collecting hemisphere (1) is symmetrically connected with the time delay hemisphere (2), a water-containing sponge (3) is connected between the heat collecting hemisphere (1) and the time delay hemisphere (2), the lower end of the water-containing sponge (3) is connected with a plurality of uniformly distributed single-point heat expansion balls (6), a water containing cover (4) is connected in the heat collecting hemisphere (1), the lower end of the single-point heat expansion ball (6) is connected with a heat conducting wire (5), the heat conducting wire (5) sequentially penetrates through the water containing cover (4) and the heat collecting hemisphere (1) and extends to the outside, and saltpeter powder (9) is filled at the bottom side of the water containing cover (4).

7. The self-cooling heat-conducting coating for the LED lamp according to claim 6, wherein the coating comprises: hold water cover (4) and include in proper order big-end-up and contain the ponding section of a plurality of single-point thermal expansion balls (6), the ponding section that the internal diameter is unchangeable and the section of draining of internal diameter grow gradually, there is last arc board (7) of catchmenting in the ponding section sliding connection, it is connected with many elastic support rod (8) to go up arc board (7) of catchmenting and gather between hot hemisphere (1).

8. The self-cooling heat-conducting coating for the LED lamp according to claim 6, wherein the coating comprises: the heat-collecting hemisphere (1) is made of heat conducting materials, and the delay hemisphere (2) is filled with phase-change cold storage materials.

9. The self-cooling heat-conducting coating for the LED lamp according to claim 6, wherein the coating comprises: single-point thermal expansion ball (6) are including heat conduction hemisphere (61) and thermal-insulated hemisphere (62), and heat conduction hemisphere (61) and thermal-insulated hemisphere (62) symmetric connection, crowded water hole has been seted up to thermal-insulated hemisphere (62) upper end, sliding connection has pressurized kicking block (63) in the crowded water hole, it has heating honeycomb piece (65) to fill between heat conduction hemisphere (61) and thermal-insulated hemisphere (62), the cladding of heating honeycomb piece (65) outer end has cladding air film (64), and cladding air film (64) are connected with pressurized kicking block (63).

10. The self-cooling heat-conducting coating for the LED lamp according to claim 9, characterized in that: the heat-conducting hemisphere (61) is made of hard heat-conducting materials, the heat-insulating hemisphere (62) and the pressed top block (63) are both made of hard heat-insulating materials, and the heating honeycomb piece (65) is made of elastic heat-conducting materials and is of a honeycomb structure.