CN210035427U

CN210035427U - Heat-conducting plastic radiator of LED mining lamp

Info

Publication number: CN210035427U
Application number: CN201920919772.3U
Authority: CN
Inventors: 沈博; 金慧星; 巩玉钊; 张光辉; 周永松
Original assignee: Hangzhou New Material Technology Ltd By Share Ltd
Current assignee: Hangzhou New Material Technology Ltd By Share Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-02-07
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a LED industrial and mining lamp thermal conductivity plastic radiator, it includes thermal base plate and the radiating element of making by thermal conductivity plastic, the radiating element is located the thermal base plate back, the radiating element includes a plurality of long radiating rib pieces, well radiating rib piece and short radiating rib piece, long radiating rib piece, the length and the heat radiating area of well radiating rib piece and short radiating rib piece decrease progressively in proper order, long radiating rib piece, well radiating rib piece and short radiating rib piece are all fixed at the thermal base plate back and are radial equipartition around the thermal base plate center, well radiating rib piece is located between the adjacent long radiating rib piece, short radiating rib piece is located between radiating rib piece and the long radiating rib piece and/or is located between the adjacent well radiating rib piece, long radiating rib piece, the clearance between well radiating rib piece and the short radiating rib piece forms the radiating channel that is linked together. The utility model discloses heat conduction is effectual, and the radiating effect is good, and the radiating efficiency is high.

Description

Heat-conducting plastic radiator of LED mining lamp

Technical Field

The utility model relates to a radiator especially relates to a LED industrial and mining lamp thermal conductive plastic radiator.

Background

Industrial and mining lamps are lamps used in production operation areas of factories and mines. The mining lamp is developed from the original traditions such as a sodium lamp mining lamp and a mercury lamp mining lamp to the LED mining lamp which is adopted nowadays mostly, and the indication, the lighting effect and the energy consumption are greatly improved.

However, the industrial and mining lamp usually has a large size and a large heat productivity, and the radiator structure of the industrial and mining lamp plays a very critical role in the performance of the lamp. The radiator that adopts on present LED industrial and mining lamp is mostly the natural convection formula radiator of externally dispersing the sunflower structure, for example, the grant bulletin No. CN206018545U, the grant bulletin day 2017.03.15's Chinese patent discloses a LED industrial and mining lamp radiator, the radiator includes first panel, the second panel and locate a plurality of anchor pieces between first panel and the second panel, a plurality of anchor pieces rivet with first panel and second panel respectively, a plurality of anchor pieces are spaced each other and are enclosed and form annular. The radiator has the following defects: the heat energy of the heat source is LED out through the middle columnar structure, and then is dissipated to the air through the surrounding flaky structures, so that the heat conduction effect is not ideal, the heat dissipation efficiency is low, and the heat dissipation requirement of the high-power LED mining lamp heat radiator cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve prior art's LED industrial and mining lamp radiator heat conduction effect unsatisfactory, the technical problem that the radiating efficiency is low provides a heat conduction is effectual, and the radiating effect is good, the LED industrial and mining lamp thermal conductivity plastic radiator that the radiating efficiency is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the heat-conducting plastic radiator of the LED mining lamp comprises a heat-conducting base plate and a heat-radiating unit, wherein the heat-radiating unit is made of heat-conducting plastic, the heat-radiating unit is located on the back face of the heat-conducting base plate, the heat-radiating unit comprises a plurality of long heat-radiating fins, middle heat-radiating fins and short heat-radiating fins, the lengths and heat-radiating areas of the long heat-radiating fins, the middle heat-radiating fins and the short heat-radiating fins are sequentially decreased gradually, the long heat-radiating fins, the middle heat-radiating fins and the short heat-radiating fins are all fixed on the back face of the heat-conducting base plate and are radially and uniformly distributed around the center of the heat-conducting base plate, the middle heat-radiating fins are located between the adjacent long heat-radiating fins, the short heat-radiating fins are located between the. The heat conducting base plate and the heat radiating unit in the utility model are both made of heat conducting plastic, the weight is light, the cost is low, the radiation heat radiating effect is good, and the heat radiating unit comprises a plurality of long heat radiating fins, middle heat radiating fins and short heat radiating fins; the utility model discloses well long radiating fin, well radiating fin and short radiating fin are all fixed at the heat conduction base plate back and are radial equipartition around heat conduction base plate center, and well radiating fin is located between the adjacent long radiating fin (can set up radiating fin in the polylith between the adjacent long radiating fin), and short radiating fin is located between well radiating fin and the long radiating fin and/or is located between the adjacent well radiating fin (when being provided with the radiating fin in the polylith between the adjacent long radiating fin, also can be provided with short radiating fin between the adjacent well radiating fin this moment), and the clearance between long radiating fin, well radiating fin and the short radiating fin forms the radiating channel that is linked together, the utility model discloses optimize the improvement to the range distribution mode of long radiating fin, well radiating fin and short radiating fin, form mutual intercommunication between long radiating fin, well radiating fin and the short radiating fin, The heat dissipation channel with uniform heat dissipation guarantees that heat can be dissipated from the middle part to all around in all directions under the condition that a large heat dissipation area is guaranteed, so that the heat dissipation rate and the radiation heat dissipation effect are guaranteed, and the stable working temperature of the LED mining lamp can be maintained.

Preferably, the front surface of the heat-conducting substrate is provided with an assembling concave cavity, the middle of the assembling concave cavity is provided with a mounting hole, the cavity bottom of the assembling concave cavity is provided with a heat-conducting metal plate, one side of the mounting hole, which is positioned on the back surface of the heat-conducting substrate, is fixedly provided with a supporting column, and a through hole communicated with the mounting hole is formed in the supporting column. The assembly cavity is used for holding, installation LED light source board, but the heat conduction speed between LED light source board and the heat conduction base plate of being made by thermal conductive plastic is slower, for the heat conduction speed that improves between LED light source board and the heat conduction base plate, the utility model discloses compound heat conduction metal sheet at the bottom of the chamber of assembly cavity, heat conduction metal sheet can be aluminum plate etc. and heat conduction performance of heat conduction metal sheet is splendid, can transmit the heat that LED light source board produced to the heat conduction base plate on fast through metal heat conduction mode, thereby improve greatly the utility model discloses a heat conduction speed, in addition, heat conduction metal sheet plays the effect of skeleton, can avoid the heat conduction base plate to take place warp in injection moulding and use.

Preferably, the upper portion of the outer side face of the heat-conducting substrate is provided with an extending convex edge, the edge of the extending convex edge is provided with a downward-folding surrounding edge, the outer end of the long heat-radiating fin extends to the downward-folding surrounding edge and is connected with the downward-folding surrounding edge, the inner end of the long heat-radiating fin extends to the supporting column and is connected with the supporting column, the outer end of the middle heat-radiating fin extends to the downward-folding surrounding edge and is connected with the downward-folding surrounding edge, a gap is reserved between the inner end of the middle heat-radiating fin and the supporting column, the distance from the inner end of the short heat-radiating fin to the supporting column is larger than the distance from the inner end of the middle heat-radiating fin to the supporting column, and heat-radiating holes are arranged at corresponding positions of the extending convex edge between the long heat-radiating fin and the middle heat-radiating fin. The structure of the utility model can lead the hot air along the heat dissipation channel to the space surrounded by the extending convex edge, the downward folding surrounding edge, the long heat dissipation fins and the middle heat dissipation fins, and form convection and exchange with the outside cold air under the action of temperature difference through the heat dissipation holes, thereby enabling the heat to be rapidly transmitted from the middle part to the periphery in all directions, and being beneficial to accelerating the heat dissipation rate; the louvre still is favorable to alleviateing the utility model discloses a whole weight.

Preferably, the inner end of the long radiating fin is provided with a fillet notch, and the fillet notch is matched with the end face of the supporting column to form a positioning concave cavity.

Preferably, the angle between the long heat dissipation fins is 15 °.

Preferably, the short heat dissipation fins have heights smaller than the heights of the long heat dissipation fins and the middle heat dissipation fins, respectively. The short radiating fins are respectively shorter than the long radiating fins and the middle radiating fins, so that air can generate convection in different directions, and the convection effect is enhanced.

Preferably, the heat conduction base plate is disc-shaped, a plurality of injection molding copper nuts are embedded in the heat conduction base plate, a plurality of connecting columns are arranged on the back of the heat conduction base plate, and the injection molding copper nuts are embedded in the connecting columns. The heat conducting substrate is disc-shaped, and heat can be prevented from being gathered in the central area.

Preferably, the heat conducting base plate, the long heat radiating fins, the middle heat radiating fins, the short heat radiating fins, the extending convex edges, the downward-folded surrounding edges, the supporting columns and the connecting columns are of a homogeneous and integrated structure which is formed in an injection molding and integrated mode. The heat conducting base plate, the long heat radiating fins, the middle heat radiating fins, the short heat radiating fins, the extending convex edges, the downward folded surrounding edges, the supporting columns and the connecting columns are of a homogeneous and integrated structure which is formed in an injection molding mode, and the processing is convenient.

Preferably, the heat-conducting metal plate is provided with a plurality of embedding holes, and the heat-conducting substrate and the embedding holes are mutually embedded. The embedding holes can improve the bonding strength between the heat-conducting metal plate and the heat-conducting substrate, so that the heat-conducting metal plate and the heat-conducting substrate are not easy to separate.

Preferably, the insertion hole is an oblong hole.

Therefore, the utility model discloses following beneficial effect has:

(1) the heat conducting metal plate is compounded at the cavity bottom of the assembling cavity, and heat generated by the LED light source plate can be quickly transferred to the heat conducting base plate in a metal heat conducting mode, so that the heat conducting speed of the utility model is greatly improved, in addition, the heat conducting metal plate plays a role of a framework, and the heat conducting base plate can be prevented from warping and deforming in the injection molding and using processes;

(2) the long radiating fins, the middle radiating fins and the short radiating fins have different temperatures by adopting the radiating fins with different lengths and radiating areas, and air near the radiating fins with higher temperature can actively circulate to the radiating fins with lower temperature to form convection, so that the radiating effect and the radiating efficiency are favorably improved;

(3) the arrangement and distribution modes of the long radiating ribs, the middle radiating ribs and the short radiating ribs are optimized and improved, and radiating channels which are communicated with one another and uniformly radiate heat are formed among the long radiating ribs, the middle radiating ribs and the short radiating ribs, so that the heat can be radiated from the middle part to the periphery in all directions under the condition of ensuring a large radiating area, the radiating rate and the radiating effect are ensured, and the stable working temperature of the LED mining lamp is maintained.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic perspective view of another perspective of the present invention.

Fig. 4 is a top view of fig. 3.

In the figure: heat conduction base plate 1, assembly cavity 2, mounting hole 3, heat conduction metal sheet 4, long radiating fin 5, well radiating fin 6, short radiating fin 7, heat dissipation channel 8, support column 9, through-hole 10, extension chimb 11, turn over surrounding edge 12 down, louvre 13, fillet breach 14, copper nut 15 moulds plastics, spliced pole 16, embedding hole 17.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

The heat-conducting plastic radiator for the LED mining lamp comprises a heat-conducting substrate 1 and a heat-radiating unit, wherein the heat-conducting substrate 1 and the heat-radiating unit are both made of heat-conducting plastic, the heat-conducting substrate is disc-shaped, a plurality of injection-molded copper nuts 15 are embedded in the heat-conducting substrate, the upper part of the outer side surface of the heat-conducting substrate extends outwards to form an extending convex edge 11, the edge of the extending convex edge extends downwards to form a lower folded surrounding edge 12, an assembly concave cavity 2 is formed in the front surface of the heat-conducting substrate in a concave mode, a heat-conducting metal plate 4 is compounded at the cavity bottom of the assembly concave cavity, the heat-conducting metal plate is an aluminum plate, a plurality of embedding holes 17 are formed in the heat-conducting metal plate; the back of the heat conducting base plate is provided with a plurality of connecting columns 16 (as shown in figures 3 and 4), injection molding copper nuts are embedded in the connecting columns, one side of the mounting hole, which is positioned on the back of the heat conducting base plate, protrudes outwards to form a supporting column 9, a through hole 10 communicated with the mounting hole is formed in the supporting column, the heat radiating unit comprises a plurality of long heat radiating fins 5, middle heat radiating fins 6 and short heat radiating fins 7, the lengths and heat radiating areas of the long heat radiating fins, the middle heat radiating fins and the short heat radiating fins are sequentially reduced, the long heat radiating fins, the middle heat radiating fins and the short heat radiating fins are all fixed on the back of the heat conducting base plate and are radially and uniformly distributed around the center of the heat conducting base plate, the middle heat radiating fins are positioned between the adjacent long heat radiating fins, the short heat radiating fins are positioned between the middle heat radiating fins and the long heat radiating fins, the outer ends of the long heat, the included angle between the long heat-radiating fins is 15 degrees, the inner ends of the long heat-radiating fins are provided with fillet notches 14, the fillet notches are matched with the end surfaces of the supporting columns to form positioning concave cavities, the outer ends of the middle heat-radiating fins extend to the downward folding surrounding edge and are connected with the downward folding surrounding edge, gaps are reserved between the inner ends of the middle heat-radiating fins and the supporting columns, the outer ends of the short heat-radiating fins extend to the edge of the heat-conducting base plate and are reserved with the downward folding surrounding edge, gaps are reserved between the inner ends of the short heat-radiating fins and the supporting columns, the heights of the short heat-radiating fins are respectively smaller than those of the long heat-radiating fins and the middle heat-radiating fins, the distances from the inner ends of the short heat-radiating fins to the supporting columns are larger than those from the inner ends of the middle heat-radiating fins to the supporting columns, heat-radiating holes 13 are arranged at the corresponding positions, the heat conducting base plate, the long heat radiating fins, the middle heat radiating fins, the short heat radiating fins, the extending convex edges, the lower folding surrounding edges, the supporting columns and the connecting columns are of a homogeneous and integrated structure which is formed in an injection molding mode.

The utility model discloses a heat dissipation principle does: the heat generated by the LED light source plate is quickly transferred to the heat conducting base plate in a metal heat conducting mode through the heat conducting metal plate, the heat conducting base plate transfers the heat to the heat radiating fins (long heat radiating fins, middle heat radiating fins and short heat radiating fins) to exchange heat with air, and the long heat radiating fins, the middle heat radiating fins and the short heat radiating fins have different temperatures due to different heat radiating areas of the long heat radiating fins, the middle heat radiating fins and the short heat radiating fins, so that the air near the heat radiating fins with higher temperature can actively circulate to the heat radiating fins with lower temperature to form convection, and the heat radiating effect and the efficiency are improved; the hot air in the heat dissipation channel is quickly guided to the space surrounded by the extending convex edge, the downward folded surrounding edge, the long heat dissipation fins and the middle heat dissipation fins along the heat dissipation channel, and forms convection and exchange with the outside cold air under the action of temperature difference, so that the heat can be quickly transmitted from the middle part to the periphery in an all-around mode, and the heat dissipation rate is accelerated.

The utility model discloses a LED industrial and mining lamp thermal conductive plastic radiator can obtain through the integrated into one piece that moulds plastics, and production simple process, and the main material is thermal conductive plastic, and whole matter is light, and is with low costs, and heat conduction effect is good with the radiating effect, and the radiating efficiency is high, can satisfy the heat dissipation requirement of high-power LED industrial and mining lamp radiator, has great using value and wide market prospect.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent structure transform of doing to above embodiment the utility model discloses technical scheme's protection scope.

Claims

1. A heat-conducting plastic radiator of an LED mining lamp is characterized by comprising a heat-conducting substrate (1) and a heat-radiating unit, wherein the heat-conducting substrate and the heat-radiating unit are both made of heat-conducting plastic, the heat dissipation unit is positioned on the back of the heat conduction substrate and comprises a plurality of long heat dissipation fins (5), middle heat dissipation fins (6) and short heat dissipation fins (7), the lengths and the heat dissipation areas of the long heat dissipation fins, the middle heat dissipation fins and the short heat dissipation fins are gradually decreased, the long heat dissipation fins, the middle heat dissipation fins and the short heat dissipation fins are all fixed on the back face of the heat conduction base plate and are radially and uniformly distributed around the center of the heat conduction base plate, the middle heat dissipation fins are located between the adjacent long heat dissipation fins, the short heat dissipation fins are located between the middle heat dissipation fins and the long heat dissipation fins and/or between the adjacent middle heat dissipation fins, and gaps among the long heat dissipation fins, the middle heat dissipation fins and the short heat dissipation fins form communicated heat dissipation channels (8).

2. The heat-conducting plastic radiator for the LED mining lamp as claimed in claim 1, wherein the front surface of the heat-conducting substrate is provided with an assembling cavity (2), the assembling cavity is provided with a mounting hole (3) in the middle, the cavity bottom of the assembling cavity is provided with a heat-conducting metal plate (4), one side of the mounting hole, which is positioned on the back surface of the heat-conducting substrate, is fixed with a supporting column (9), and the supporting column is provided with a through hole (10) communicated with the mounting hole.

3. The LED mining lamp heat-conducting plastic radiator as claimed in claim 2, the upper portion of heat conduction base plate lateral surface is equipped with extension chimb (11), the edge of extension chimb is equipped with down rolls over surrounding edge (12), long radiating fin's outer end extends to down rolls over the surrounding edge and links to each other with the surrounding edge that rolls over down, long radiating fin's inner extends to the support cylinder and links to each other with the support column, well radiating fin's outer end extends to down rolls over the surrounding edge and links to each other with the surrounding edge that rolls over down, leave the clearance between well radiating fin's the inner and the support column, short radiating fin's outer end extends to the edge of heat conduction base plate and leaves the clearance with rolling over down between the surrounding edge, leave the clearance between short radiating fin's the inner and the support column, short radiating fin's the inner is greater than well radiating fin's the distance, the extending convex edge is provided with heat dissipation holes (13) at the corresponding positions between the long heat dissipation fins and the middle heat dissipation fins.

4. The LED mining lamp heat-conducting plastic radiator as claimed in claim 2 or 3, wherein the inner ends of the long heat-radiating fins are provided with round-corner notches (14), and the round-corner notches and the end faces of the supporting columns are matched to form positioning cavities.

5. The LED mining lamp heat-conducting plastic radiator as claimed in claim 4, wherein the included angle between the long radiating ribs is 15 °.

6. The LED mining lamp heat-conducting plastic radiator as claimed in claim 5, wherein the short heat-radiating ribs are smaller in height than the long heat-radiating ribs and the middle heat-radiating ribs, respectively.

7. The LED mining lamp heat-conducting plastic radiator as claimed in claim 3, wherein the heat-conducting substrate is in a shape of a disc, a plurality of injection-molded copper nuts (15) are embedded in the heat-conducting substrate, a plurality of connecting columns (16) are arranged on the back of the heat-conducting substrate, and the injection-molded copper nuts are embedded in the connecting columns.

8. The LED mining lamp heat-conducting plastic radiator as claimed in claim 7, wherein the heat-conducting base plate, the long heat-radiating fins, the middle heat-radiating fins, the short heat-radiating fins, the extended convex edges, the folded-down surrounding edges, and the supporting columns and the connecting columns are of an injection-molded and integrally-molded homogeneous integral structure.

9. The heat-conducting plastic radiator for the LED mining lamp as claimed in claim 2, wherein a plurality of embedding holes (17) are formed in the heat-conducting metal plate, and the heat-conducting substrate is embedded in the embedding holes.

10. The heat-conducting plastic radiator for the LED mining lamp as claimed in claim 9, wherein the embedding hole is a long round hole.