CN218237411U - Radiator, radiating assembly and spotlight - Google Patents

Abstract

The utility model provides a radiator, which comprises a first side wall part, a first end part and a second end part, wherein the first side wall part is surrounded into a tubular structure and forms a radiating cavity inside, and the first end part and the second end part are arranged at two ends of the first side wall part; the first side wall part is provided with a first base and a second base with height difference on the inner side, first radiating fins are arranged on the first base at intervals, and first air openings are formed between the adjacent first radiating fins; second cooling fins are arranged on the second base at intervals, and second air openings are formed between the adjacent second cooling fins; the heat dissipation cavity is mutually communicated with the first air opening and the second air opening, and the heat dissipation cavity, the first air opening and the second air opening form a first heat dissipation channel together. The radiator effectively radiates the lamp part connected with the radiator in a convection mode and a heat conduction mode. The utility model discloses still provide radiator unit and shot-light including this radiator.

Description

Radiator, radiating assembly and spotlight

Technical Field

The utility model belongs to the technical field of the technique of LED lamps and lanterns production and specifically relates to a radiator, radiator unit and shot-light is related to.

Background

The LED lamp, as a solid-state semiconductor device that converts electric energy into visible light, has the advantages of high brightness, low power consumption, environmental protection, impact resistance, and stable performance, and thus is widely used in home lighting and commercial lighting.

In order to increase the illumination, a LED lamp with a medium-high power light source device is generally used in outdoor lighting places. Due to poor heat dissipation performance, the LED lamps with medium and high power are easy to break down under the condition of overhigh temperature, and the service life of the lamp is influenced. Therefore, the LED lamp provides better heat dissipation requirements on the lamp body assembly.

The prior art discloses a high-power LED surface-mounted down lamp, including power supply module, radiator subassembly and light-emitting component, be equipped with a plurality of radial louvres on the bottom, the louvre corresponds with the radiating fin position that is equipped with on the radiator, be equipped with a plurality of air vents on light-emitting component's the lamp ring, the inside encapsulation of radiator has the liquid heat transfer working medium of latent heat of vaporization moreover. In the use process, air enters from the vent hole on the lamp ring and flows out from the heat dissipation hole of the bottom cover, and the direction of the formed convection channel is perpendicular to the projection direction of the light source assembly. The radiator of the LED surface-mounted down lamp is of a sealed hollow cylindrical structure, and mainly utilizes a plurality of gas-liquid composite phase changes in the grooves to dissipate heat in the heat dissipation process, namely the convective heat dissipation of the LED surface-mounted down lamp needs to be combined with the phase change heat dissipation.

Therefore, how to provide a heat dissipation mechanism for enhancing convection heat dissipation of a lamp is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

In order to solve the above-mentioned problem that prior art exists, the utility model provides a radiator has set up first fin and second fin respectively through first base and the second base that has the difference in height, and the first wind gap and the second wind gap that form separately communicate with each other with the heat dissipation cavity, finally form heat dissipation channel, effectively dispel the heat to the lamps and lanterns part that meets with this radiator through the mode of convection current. The utility model discloses still provide the radiator unit including this radiator to and the shot-light.

In order to achieve the above object, the present invention provides the following technical solutions:

the radiator comprises a first side wall part, a first end part and a second end part, wherein the first side wall part is surrounded into a cylindrical structure and forms a radiating cavity inside, and the first end part and the second end part are arranged at two ends of the first side wall part;

the first side wall part is provided with a first base and a second base with height difference on the inner side, first cooling fins are arranged on the first base at intervals, and a first air opening is formed between the adjacent first cooling fins;

second cooling fins are arranged on the second base at intervals, and second air openings are formed between the adjacent second cooling fins;

the heat dissipation cavity is communicated with the first air opening and the second air opening, and the heat dissipation cavity, the first air opening and the second air opening form a first heat dissipation channel together.

In the radiator, a first side wall part forms a cylindrical structure in a surrounding way, and a hollow radiating cavity is formed inside the first side wall part; and the first base and the second base with height difference are arranged on the inner side of the first side wall part, the first base and the second base are also positioned in the heat dissipation cavity and are respectively provided with a first cooling fin and a second cooling fin for forming a first air port and a second air port, and the first air port and the second air port are communicated with the heat dissipation cavity to form a first heat dissipation channel, so that air can be introduced into the heat dissipation cavity through the first air port or the second air port and finally flows out of the second air port or the first air port, the temperature of a lamp part connected with the heat sink can be reduced, and the normal operation of the lamp is ensured.

As a preferred embodiment of the present invention, the first heat dissipation fins are radially distributed on the back surface of the first base, one end of the first heat dissipation fin is connected to the first base, and the other end of the first heat dissipation fin extends toward the second end; the first tuyere has a structure with a narrow inner part and a wide outer part.

As a preferred embodiment of the present invention, the second heat dissipation fins are radially distributed on the front surface of the second base, one end of the second heat dissipation fin is connected to the second base, and the other end of the second heat dissipation fin extends toward the first end; the second tuyere has a structure with a narrow inner part and a wide outer part.

As a preferred embodiment of the present invention, the height of the second fin is greater than the height of the first fin.

As a preferred embodiment of the present invention, the first base and the second base are both arc-shaped structures, and the second base is closer to the second end portion than the first base.

As a preferred embodiment of the present invention, a baffle is disposed between the first base and the second base, the baffle is connected to the ends of the first base and the second base respectively, and the baffle is parallel to the first heat sink or the second heat sink.

As a preferred embodiment of the present invention, at least one of the second tuyere is aligned with the first tuyere.

The utility model provides a heat radiation assembly, including lid and foretell radiator, the lid covers on the radiator, the lid includes the apron and follows the second lateral wall portion that the apron border was extended out, second lateral wall portion laminating connect in the outside of first lateral wall portion.

As a preferred embodiment of the present invention, the cover plate has been provided with a heat dissipation through hole, the first end portion abuts against the cover plate, and the heat dissipation through hole is communicated with the heat dissipation cavity and forms a second heat dissipation channel.

In the heat dissipation assembly, in the process of convection heat dissipation, one part of air can flow out from the horizontal direction, and the other part of air can flow out from the vertical direction, so that the heat dissipation efficiency is improved.

The utility model also provides a shot-light, including lamp shade, power spare and light source spare to and foretell radiator unit, the power spare is installed in the heat dissipation cavity, the light source spare is installed in the lamp shade, the radiator with lamp shade fixed connection, just second end butt in the roof of lamp shade.

The spotlight adopts the heat dissipation assembly, so that heat generated by the light source part and the power supply part can be dissipated to the outside in time, and the normal work of the lamp is ensured.

Based on foretell technical scheme, the utility model discloses the technological effect who gains does:

(1) In the radiator provided by the utility model, low-temperature air can enter from the air opening at one side and flow out from the air opening at the other side after passing through the radiating cavity; moreover, because the air ports on the two sides are not on the same horizontal plane, the air flow can be filled in the heat dissipation cavity in the process of rising and then flows out, so that the air in the heat dissipation cavity can be supplemented, and the temperature of the radiator and the components connected with the radiator can be reduced.

(2) The utility model discloses a radiating assembly has installed the lid additional on the structure basis of radiator, has seted up the heat dissipation through-hole on the lid. The hot air in the heat dissipation cavity can also flow out through the heat dissipation through holes, so that a heat dissipation channel is increased, and the heat dissipation efficiency is improved. The spotlight comprising the heat dissipation assembly can effectively dissipate heat, and ensures the working performance and the service life.

Drawings

Fig. 1 is a schematic structural view of the heat sink of the present invention at one of the viewing angles.

Fig. 2 is a schematic structural view of the heat sink of the present invention at another viewing angle.

Fig. 3 is an exploded view of the heat sink assembly of the present invention.

Fig. 4 is a schematic structural diagram of the cover body of the present invention.

Fig. 5 is an exploded view of the spotlight of the present invention.

Fig. 6 is a cross-sectional view of the spotlight of the present invention.

Fig. 7 is the heat flow chart of the spot lamp in operation.

Detailed Description

To facilitate an understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings and specific examples. The preferred embodiments of the present invention are illustrated in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Fig. 1 is a schematic structural view of a heat sink of this embodiment at one viewing angle, fig. 2 is a schematic structural view of the heat sink of this embodiment at another viewing angle, and referring to fig. 1 and fig. 2 in combination, a heat sink 100 is assembled in a lamp for dissipating heat generated by lamp components such as a light source component and a power source component to the outside to ensure that the lamp works in a normal temperature range. The heat sink 100 includes a first end portion 1, a second end portion 2 and a first side wall portion 3, wherein the first side wall portion 3 surrounds to form a cylindrical structure, that is, the heat sink 100 is integrally cylindrical, and is applicable to columnar or cylindrical lighting apparatuses such as down lamps, (guide rails) spot lamps and the like.

In some embodiments, the first sidewall 3 may also be surrounded by a square structure, a triangular structure or other linear modeling structure, so as to be suitable for a lighting fixture such as a panel lamp or a flat panel lamp.

A heat dissipation cavity 30 of the heat sink 100 is formed inside the first side wall 3, and the first end portion 1 and the second end portion 2 are respectively disposed at both ends of the first side wall 3. The first end portion 1 and the second end portion 2 are also openings at the upper end and the lower end of the heat dissipation cavity 30, and are tightly attached to other components of the lamp, so that heat is conducted to the heat sink and then dissipated to the outside in an air convection or heat conduction manner.

It can be understood that the first end portion 1 and the second end portion 2 respectively have a first end surface and a second end surface, and the first end surface and the second end surface both have a planar structure, so as to be in fit connection with other lamp components.

In the present embodiment, the first end portion 1 is located at the upper end of the first side wall portion 3, and the second end portion 2 is located at the lower end of the first side wall portion 3; in some embodiments, the positions of the first end portion 1 and the second end portion 2 can be interchanged according to the shape of the connected component or the heat dissipation requirement, i.e. the first end portion 1 is located at the lower end of the first side wall portion 3, and the second end portion 2 is located at the upper end of the first side wall portion 3.

A first base 31 and a second base 32 having a height difference are provided inside the first sidewall 3, that is, the first base 31 and the second base 32 form an arc-shaped block structure along the inner sidewall of the first sidewall 3, but the first base 31 and the second base 32 are not on the same plane. In the present embodiment, the first base 31 and the second base 32 are provided at the position of the first side wall portion 3 near the second end portion 2, and the second base 32 is closer to the second end portion 2 than the first base 31.

As described above, when the heat sink 100 of the present embodiment is mounted, the first end portion 1 is located above and the second end portion 2 is located below, so that the front side is directed toward the first end portion 1 and the back side is directed away from the first end portion 1 in the description. In other embodiments, the heat sink 100 can also be turned upside down, i.e. the first end 1 is located below and the second end is located above, depending on the combined lamp components.

In the present embodiment, the first heat sink fins 41 are disposed on the back surface of the first base 31 at intervals, and the second heat sink fins 42 are disposed on the front surface of the second base 32 at intervals, as shown in fig. 1, the first heat sink fins 41 face away from the first end 1 and face toward the second end 2; the second fins 42 face the first end 1 upward and away from the second end 2.

A first air opening 410 is formed between adjacent first cooling fins 41, a second air opening 420 is formed between adjacent second cooling fins 42, and the first air opening 410 and the second air opening 420 are respectively communicated with the heat dissipation cavity 30, so that the heat dissipation cavity 30, the first air opening 410 and the second air opening 420 together form a first heat dissipation channel 101.

In the heat sink of the present embodiment, the first air inlet 410 located at the lower portion is an air inlet, and the second air inlet 420 located at the upper portion is an air outlet. In some embodiments, as shown in fig. 2, the heat sink is turned upside down, and the second port 420 is located below and is an inlet, and the first port 410 is located above and is an outlet. It will be appreciated that the air below is heated by heat conduction, creating a turbulent air flow from bottom to top, and the air flow will rise and exit from above.

In order to make the air flow smooth, the first heat dissipation fins 41 are radially distributed on the back surface of the first base 31, and one end of the first heat dissipation fin 41 is connected to the first base 31 and the other end thereof extends toward the second end 2 and is separated from each other, so that the first air opening 410 is formed to have a structure with a narrow inside and a wide outside. The first fins 41 together form a first heat dissipation surface at the second end 2, which is flush with the plane of the second end. In some embodiments, the first fins may also be arranged at different heights at the end facing the second end 2, forming a staggered structure.

Similarly to the arrangement of the first heat sink 41, the second heat sinks 42 are radially distributed on the front surface of the second base 32, one end of the second heat sink 42 is connected to the second base 32, and the other end extends toward the first end 1 and is separated from the first end, so that the second air inlet 420 is formed to have a structure with a narrow inside and a wide outside. The second fins 42 together form a second heat dissipation surface at the first end 1, which is flush with the plane of the first end. In some embodiments, the second fins may also be arranged at different heights at the end facing the first end portion 1, forming a staggered structure.

It should be noted that, in the present embodiment, the height of the second heat sink 42 is greater than the height of the first heat sink 41, so that the opening size of the second air opening 420 is greater than the opening size of the first air opening 410. This is to form an air pressure difference inside the heat sink, and the air with the temperature increased can flow out from the second air inlet 420 as the air outlet, and the low temperature air enters from the first air inlet 410 again for supplement. For better convection, at least one second tuyere 420 is required to be directed to the first tuyere 410.

Further, between the first base 31 and the second base 32, a baffle 33 is further disposed, and the baffle 33 is connected to the ends of the first base 31 and the second base 32, respectively, and is parallel to the first heat sink or the second heat sink. In this way, the projected circumferences of the first base 31 and the second base 32 at the first end 1 or the second end 2 are the same as the circumference of the bottom surface of the first sidewall 3. In some embodiments, the baffle 33 divides the first and second bases 31 and 32 into arcuate pieces of equal arc length.

It should be noted that, as shown in fig. 2, the first heat sink 41 may be partially disposed on the back surface of the second base 32, as well as on the back surface of the first base 31. The height of the first heat sink 41 provided on the back surface of the second base 32 is smaller than the height of the first heat sink provided on the back surface of the first base 31, but the first heat sink surfaces are formed on the second end portions. Similarly, the second heat sink 42 may be disposed not only on the front surface of the second base 32, but also the second heat sink 42 may be partially disposed on the front surface of the first base 31. Wherein the height of the second heat sink 42 disposed on the front surface of the first base 31 is smaller than the height of the second heat sink 42 disposed on the front surface of the second base 32, which together form a second heat dissipating surface at the second end.

The radiator is stacked with other components needing heat dissipation, on one hand, heat conduction can be carried out through the first end part and the second end part, and then the heat is radiated to the outside from the first side wall part; on the other hand, low-temperature air enters from the first air opening on one side, and after passing through the heat dissipation cavity, the air is also passively heated under the action of heat conduction, and heat turbulence rises to flow out from the second air opening on the other side, namely the air passes through the first heat dissipation channel, so that the temperature of the heat dissipation cavity and even the whole radiator is reduced, and the normal work of the lamp is ensured.

Example 2

Fig. 3 is an exploded view of the heat dissipation assembly of the present embodiment, fig. 4 is a schematic structural diagram of the cover of the present embodiment, and referring to fig. 3 and fig. 4 in combination, a heat dissipation assembly 200 includes a cover 5 and the heat sink 100 of embodiment 1, wherein the cover 5 covers the heat sink 100.

Specifically, the cover 5 includes a cover plate 51 and a second side wall portion 52, the second side wall portion 52 extends downward from an edge of the cover plate 51, when the cover 5 is connected to the heat sink 100, the second side wall portion 52 is attached to an outer side of the first side wall portion 3, and the cover plate 51 is attached to the first end portion 1.

The cover plate 51 is further provided with a heat dissipating through hole 511, and the heat dissipating through hole 511 is communicated with the heat dissipating cavity 30 of the heat sink 100 and forms a second heat dissipating channel 201. The first heat dissipation channel is a heat dissipation channel in the horizontal direction, and the second heat dissipation channel is a heat dissipation channel in the vertical direction.

On the basis of the structure, the low-temperature air is heated and rises after entering the heat dissipation cavity 30 from the first air opening 410, and not only can flow out from the second air opening 420, but also can flow out from the heat dissipation through hole 511 of the cover plate 51, so that the heat dissipation efficiency is effectively improved.

A heat sink 512 is disposed above the cover plate 51 to further dissipate heat to the outside by means of heat conduction.

Example 3

Fig. 5 is an exploded view of the spot light of the present embodiment, fig. 6 is a cross-sectional view of the spot light of the present embodiment, and with reference to fig. 5 and fig. 6, the spot light may be directly installed or installed on a ceiling, or the like through a guide rail, and includes a lamp shade 6, a power supply 7 and a light source 8, wherein the heat dissipation assembly 200 is fixedly installed above the lamp shade 6, the power supply 7 is installed in the heat dissipation cavity 30 inside the heat sink 100, the light source 8 is installed inside the lamp shade 6 and is attached to the top plate 61 of the lamp shade 6, and the second end 2 of the heat sink 100 abuts against the top plate 61 of the lamp shade 6.

Further, the power supply member 7 includes a power supply cover 71, a power supply board 72, and a power supply box 73, and the power supply board 72 is mounted in the power supply box 73 and covered by the power supply cover 71 and then mounted in the heat dissipation chamber as a whole.

The light source unit 8 includes a light emitting unit 82 and a light source fastener 71 fixedly coupled together and then mounted on the lamp housing 6 as a whole.

The spot lamp further comprises an optical piece 9 arranged inside the lamp shade 6, the optical piece 9 comprises a reflecting cup 91 and a front ring 92, and the optical piece 9 is arranged in the light emitting direction of the light source piece 8 so as to process light.

Fig. 7 is a heat flow diagram of the spot lamp of the present embodiment during operation, and as shown in fig. 7, when the spot lamp operates, both the light source element inside the lamp cover and the power source element inside the heat dissipation cavity generate heat. The low-temperature air enters the heat dissipation cavity from the first air opening at the lower part, and after the low-temperature air rises and traverses the radiator after being heated, one part of the low-temperature air flows out from the second air opening, and the other part of the low-temperature air flows out from the heat dissipation through hole of the cover plate; after the air flows out, the heat pressure difference exists in the heat dissipation cavity, and the low-temperature air continues to enter the heat dissipation cavity from the first air opening.

In addition, the heat generated by the light source part can exchange heat with the outside through the lampshade and the radiator; the heat generated by the power supply member may be heat-exchanged with the outside through the first sidewall portion of the heat sink. The radiator and the lampshade together radiate heat generated by the light source part and the power supply part to the outside, so that the working temperature in the lamp body is reduced, and the normal work of the lamp is ensured.

The foregoing is merely illustrative and explanatory of the structure of the present invention, which is described in more detail and with greater particularity, and is not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, numerous variations and modifications can be made without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.

Claims (10)

1. The radiator is characterized by comprising a first side wall part, a first end part and a second end part, wherein the first side wall part is surrounded into a cylindrical structure and forms a radiating cavity inside, and the first end part and the second end part are arranged at two ends of the first side wall part;

the first side wall part is provided with a first base and a second base with height difference on the inner side, first radiating fins are arranged on the first base at intervals, and first air openings are formed between the adjacent first radiating fins;

second cooling fins are arranged on the second base at intervals, and second air openings are formed between the adjacent second cooling fins;

the heat dissipation cavity is communicated with the first air opening and the second air opening, and the heat dissipation cavity, the first air opening and the second air opening form a first heat dissipation channel together.

2. The heat sink as claimed in claim 1, wherein the first fins are radially disposed on the back surface of the first base, one end of the first fin is connected to the first base, and the other end of the first fin extends toward the second end; the first tuyere has a structure with a narrow inside and a wide outside.

3. The heat sink as claimed in claim 1, wherein the second fins are radially distributed on the front surface of the second base, one end of the second fins is connected to the second base, and the other end extends toward the first end; the second tuyere has a structure with a narrow inside and a wide outside.

4. The heat sink of claim 1, wherein the height of the second fin is greater than the height of the first fin.

5. The heat sink of claim 1, wherein the first base and the second base are each arcuate in configuration, the second base being closer to the second end than the first base.

6. The heat sink as claimed in claim 5, wherein a baffle is disposed between the first base and the second base, the baffle is connected to the ends of the first base and the second base, respectively, and the baffle is parallel to the first fin or the second fin.

7. The heat sink as claimed in claim 6, wherein at least one of the second ports is aligned with the first port.

8. The heat sink assembly as claimed in any one of claims 1 to 7, wherein the cover covers the heat sink, the cover includes a cover plate and a second sidewall extending from an edge of the cover plate, and the second sidewall is attached to an outer side of the first sidewall.

9. The heat dissipating assembly of claim 8, wherein the cover plate defines a heat dissipating through hole, the first end abuts against the cover plate, and the heat dissipating through hole is in communication with the heat dissipating cavity to form a second heat dissipating channel.

10. The spot lamp is characterized by comprising a lamp shade, a power supply part, a light source part and the heat dissipation assembly of any one of claims 8 to 9, wherein the power supply part is installed in the heat dissipation cavity, the light source part is installed in the lamp shade, the heat sink is fixedly connected with the lamp shade, and the second end part is abutted to a top plate of the lamp shade.

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