CN210979775U - Lighting device radiator and lighting device - Google Patents

Abstract

The embodiment of the application provides a lighting device radiator and a lighting device, relates to the field of machinery, and aims to solve the problem that the defect rate is high when the lighting device radiator is manufactured in an integrally formed mode in the related technology. The lighting device heat sink may include: a first heat sink member and a second heat sink member; the first heat sink piece is axially butted with the second heat sink piece; the first heat dissipation part is provided with a first heat dissipation rib, a plurality of heat dissipation ribs are arranged on the periphery of the first heat dissipation rib, the second heat dissipation part is provided with a second heat dissipation rib, and the first heat dissipation rib is in butt joint with the second heat dissipation rib; an opening is formed between each radiating fin of the plurality of radiating fins and the second radiating part to form an upper convection channel and a lower convection channel. By adopting the radiator provided by the embodiment of the application, the length of a single radiating part can be reduced, and the defect rate of the radiating part of the formed lighting device can be reduced.

Description

Lighting device radiator and lighting device

Technical Field

The invention relates to the technical field of machinery, in particular to a radiator of a lighting device and the lighting device.

Background

During the operation of the lighting device, part of the electric energy is converted into heat. If the heat cannot be discharged in time, the life of the relevant components is affected.

For example, the optical cavity of a lighting device such as a spot lamp is deep, and the matched heat radiator is slender. The radiator can be generally manufactured by adopting an integrally formed process, and for some radiators with slender structures, the integrally formed radiator has high defect rate, so that the production cost of the radiator is high, and further the cost of the lighting device needing the radiator is also high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a lighting device radiator and a lighting device, and aims to solve the problem that in the related art, the lighting device radiator is manufactured in an integrally formed mode, and the defect rate is high.

In a first aspect, embodiments of the present application provide a lighting device heat sink, which may include: a first heat sink member and a second heat sink member; the first heat sink piece is axially butted with the second heat sink piece; the first heat dissipation part is provided with a first heat dissipation rib, a plurality of heat dissipation ribs are arranged on the periphery of the first heat dissipation rib, the second heat dissipation part is provided with a second heat dissipation rib, and the first heat dissipation rib is in butt joint with the second heat dissipation rib; an opening is formed between each radiating fin of the plurality of radiating fins and the second radiating part to form an upper convection channel and a lower convection channel.

Optionally, the plurality of fins are ring-shaped structures, and each of the plurality of fins is arranged at intervals.

Optionally, a clamping groove is formed in the first heat dissipation part, and a clamping hook matched with the clamping groove in the first heat dissipation part is arranged on the second heat dissipation part; the first heat dissipation part and the second heat dissipation part are in axial butt joint through the clamping grooves and the clamping hooks.

Optionally, the hook is a wedge-shaped hook, and the first heat dissipation part and the second heat dissipation part are rotatably fastened with the hook through the clamping groove.

Optionally, the inner wall of the first heat sink piece is provided with first threads, the outer wall of the second heat sink piece is provided with second threads matched with the first threads, and the first heat sink piece and the second heat sink piece are axially butted through the first threads and the second threads.

In a second aspect, embodiments of the present application provide a lighting device, which may include any one of the lighting device heat sinks provided in the first aspect; the lighting device may further include a light source disposed at a light source mounting part on the first heat sink member.

Optionally, the first heat dissipating part has a barrel-shaped structure, the first heat dissipating part has an accommodating cavity with an open end, and the bottom of the accommodating cavity is the light source mounting part.

Optionally, the lighting device further comprises: a first lens disposed at a first mounting location of the second heat sink; and a second lens disposed at a second mounting location of the second heat sink.

Optionally, the first lens is accommodated in the accommodating cavity of the first heat sink, the first lens has a recess, and the light source is disposed opposite to the recess.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

in embodiments of the present application, the heat sink may include a first heat sink portion and a second heat sink portion, which may be axially butted into a complete heat sink. In this way, by connecting a plurality of heat dissipation portions to form a complete heat sink, the length of a single heat dissipation portion can be reduced, and the defect rate of the formed heat dissipation portion can be reduced. Therefore, compared with the related art, the production cost of the radiator can be reduced by adopting the mode; further, the production cost of the lighting device requiring the use of the lighting device heat sink can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a heat sink of a lighting device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the lighting device shown in FIG. 1 after the heat sink is axially abutted;

FIG. 3 is a top view of the lighting device of FIG. 1 with the heat sink axially abutted;

fig. 4 is a schematic view of a docking structure of a heat sink of a lighting device according to an embodiment of the present disclosure;

fig. 5 is a schematic view of another docking structure of a heat sink of a lighting device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an illumination device according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram illustrating a thermodynamic analysis of an illumination device according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram illustrating a thermodynamic analysis of various illumination devices provided in embodiments of the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, a lighting device heat sink 100 provided in an embodiment of the present application may include a first heat sink piece 101 and a second heat sink piece 102. The first heat sink piece 101 is axially butted against the second heat sink piece 102.

Optionally, in an embodiment of the present application, a locking groove 1011 may be disposed on the first heat sink member 101, and a locking hook 1021 matching the locking groove 1011 on the first heat sink member 101 may be disposed on the second heat sink member 102. The hook 1021 can be a wedge-shaped hook, and the first heat sink 101 and the second heat sink 102 are rotatably engaged with the hook 1021 through the slot 1011.

In an embodiment of the present application, the second heat sink 102 may be abutted with the first heat sink 101, and after the engaging groove 1011 is abutted with the engaging hook 1021, the second heat sink 102 may be rotated, for example, referring to fig. 1, the second heat sink 102 may be rotated clockwise until it is difficult to continue to rotate between the first heat sink 101 and the second heat sink 102.

Thus, the wedge-shaped buckles can reduce the gap between the joint surfaces of the first heat sink part 101 and the second heat sink part 102, thereby facilitating the heat in the first heat sink part 101 to be transferred to the second heat sink part 102 and improving the heat dissipation performance of the heat sink.

In other embodiments of the present application, a hook may be provided on the first heat sink member 101, and a hook may be provided on the second heat sink member 102. Also, the direction of the wedge-shaped hook may be reversed. Other cases are not to be enumerated here.

In an embodiment of the present application, the first heat sink part 101 may be provided with a first heat dissipation rib 1013, a plurality of heat dissipation fins 1012 may be arranged on the periphery of the first heat dissipation rib 1013, and the second heat sink part 102 may be provided with a second heat dissipation rib 1022, and the first heat dissipation rib 1013 may be butted against the second heat dissipation rib 1022. Thus, the contact area between the radiator 100 and the air can be increased by the heat dissipation ribs 1013, and the heat dissipation performance of the radiator 100 can be improved. In addition, the first heat dissipation rib 1013 and the second heat dissipation rib 1022 are butted, so that heat generated by the first heat dissipation rib 1013 is transferred to the second heat dissipation rib 1022, and the heat is transferred to the second heat dissipation part 102, thereby improving the heat dissipation performance of the heat sink 100.

In an embodiment of the present application, each of the plurality of fins 1012 may have an opening 1014 between it and the second heat sink piece 102, forming an upper and lower convection passage. Thus, the openings 1014 are provided to facilitate the circulation of air, and the heat radiation performance of the heat sink 100 can be improved.

In this way, in an embodiment of the present application, the heat sink 100 may include the first heat sink piece 101 and the second heat sink piece 102, and the first heat sink piece 101 and the second heat sink piece 102 may be axially butted into a complete heat sink. In this way, by connecting a plurality of heat dissipation portions to form a complete heat sink, the length of a single heat dissipation portion can be reduced, and the defect rate of the formed heat dissipation portion can be reduced. Thus, the production cost of the radiator can be reduced in this way compared with the related art.

In addition, it should be noted that, for example, in the technical field of spot lamps, a radiator of a spot lamp is generally slender, and by adopting the radiator of the illumination device provided by the embodiment of the present application in the spot lamp, the production cost of the radiator of the illumination device can be effectively reduced.

Alternatively, in an embodiment of the present application, the plurality of fins 1012 may have a ring structure, and each of the plurality of fins 1012 may be disposed at intervals. Thus, the plurality of fins 1012 may have gaps therebetween, and the gaps between the fins facilitate air circulation, thereby improving the heat dissipation performance of the heat sink 100. Of course, in other embodiments of the present application, the plurality of fins 1012 may have a rectangular configuration, and the shape thereof is not limited thereto.

Optionally, in the embodiment of the present application, the first heat sink piece 101 and the second heat sink piece 102 may be of a cast aluminum structure, and since an aluminum material has a good thermal conductivity and a low density, the parts supported by the aluminum material are light in weight and suitable for being used as a lamp material. Of course, in other embodiments of the present application, the first heat sink 101 or the second heat sink 102 may also be a cast copper structure, an injection molded structure, or the like, which is not listed here.

In other embodiments of the present application, the axial interface of the first heat sink piece and the second heat sink piece can also be achieved in other ways. In other embodiments of the present application, the abutting portions of the first heat sink piece 101 and the second heat sink piece 102 may be respectively provided with matching threads, and the axial abutting of the first heat sink piece 101 and the second heat sink piece may be achieved through a threaded structure.

For example, referring to fig. 4, in an embodiment of the present application, an inner wall of the first heat sink piece 101 may be provided with first threads 2011, an outer wall of the second heat sink piece 102 may be provided with second threads 2021, and axial butt joint of the first heat sink piece 101 and the second heat sink piece 102 may be achieved through a thread fit connection between the first threads 2011 and the second threads 2021.

In other embodiments of the present application, the axial interface of the first heat sink piece and the second heat sink piece can also be achieved in other ways. Referring to fig. 5, in an embodiment of the present application, a card slot 3011 may be disposed on the first heat sink member 101, and a card hook 3021 matching the card slot 3011 on the first heat sink member 101 may be disposed on the second heat sink member 102. The first heat sink piece 101 and the second heat sink piece 102 can be axially butted by the clamping slots 3011 and the clamping hooks 3021.

The embodiment of the application provides a lighting device. The lighting device may comprise any of the lighting device heat sinks described above. Thus, the lighting device heat sink shown in fig. 1 to 3 is used for illustration.

Referring to fig. 6, a lighting device 400 provided in an embodiment of the present application may include a lighting device heat sink 100, where the lighting device heat sink 100 may include a first heat sink portion 101 and a second heat sink portion 102, the lighting device 400 may further include a light source 403, and the light source 403 may be disposed on a light source mounting portion 4012 on the first heat sink portion 101, in an embodiment of the present application, the light source 403 may be an L ED light bead, a light bulb, or other light emitting elements, which are not listed here.

Alternatively, in an embodiment of the present application, the first heat sink member 101 may have a barrel-shaped structure, the first heat sink member 101 may have a receiving cavity 4011 therein, and the light source mounting portion 4012 may be located at a bottom of the receiving cavity 4011.

Optionally, the illumination device 400 may further include a first lens 404 and a second lens 405. In an embodiment of the present application, the first lens 404 may be disposed on a first mounting location of the second heat sink piece 102, and the second lens 405 may be disposed on a second mounting location of the second heat sink piece 102. In this way, for a relatively slender heat sink, the first heat sink member 101 may be attached in place, the first lens 404 and the second lens 405 may be disposed on the second heat sink member 102 first, and the second heat sink member 102 having the first lens 404 and the second lens 405 may be butted to the first heat sink member 101, so that the first heat sink member 101 and the second heat sink member 102 are integrally connected. In this way, the mounting of the first lens 404 and the second lens 405 is facilitated.

It should be noted that, in the related art, since the heat sink is an integrated structure, a cavity in the integrated structure where the first lens and the second lens are disposed is also relatively long and thin, and it is difficult to dispose the lenses into the relatively long and thin cavity in an actual production process, which may result in a low production efficiency of the lighting device. By adopting the scheme provided by the embodiment of the application, the lens can be conveniently installed, and the production efficiency of the lighting device can be improved.

Of course, it should be noted that in other embodiments of the present application, the lighting device may only have the first lens, that is, the lighting device may only have one lens. In other embodiments of the present application, the illumination device may not be provided with a lens.

Alternatively, in an embodiment of the present application, the light source 403 may be disposed on a PCB (Printed Circuit Board). The PCB may be connected to a power source and the PCB may be used to power the light source. It should be noted that, in other embodiments of the present application, the light source 403 may not be disposed on the PCB, and the light source and the power supply may be directly connected by a wire, and the power supply may be used to supply power to the light source, which is not described in detail herein.

Alternatively, in an embodiment of the present application, the first lens 404 may be received in the receiving cavity 4011 of the first heat sink member 101. Alternatively, the first lens 404 may have a recess 4041 thereon, and the light source 403 may be disposed opposite to the recess 4041. In the embodiment of the present application, the second lens 405 may be disposed opposite to the first lens 404, so that the light entering through the concave portion 4041 of the first lens 404 is guided out of the heat sink by the second lens 405.

In this way, in an embodiment of the present application, the heat sink may include the first heat sink piece 101 and the second heat sink piece 102, and the first heat sink piece 101 and the second heat sink piece 102 may be axially butted into a complete heat sink. In this way, by connecting a plurality of heat dissipation portions to form a complete heat sink, the length of a single heat dissipation portion can be reduced, and the defect rate of the formed heat dissipation portion can be reduced. Therefore, compared with the related art, the production cost of the radiator can be reduced by adopting the mode; further, the production cost of the lighting device requiring the use of the lighting device heat sink can be reduced.

Referring to fig. 7 and 8, applicants have analyzed the four different heat sinks of fig. 8 using thermodynamic analysis software. Referring to fig. 8, the top left corner of the heat sink structure of fig. 8, the temperature of the simulation analysis is 94.9 ℃; in the radiator structure at the upper right corner in fig. 8, the temperature of simulation analysis is 95.3 ℃; in the radiator structure at the lower left corner in fig. 8, the temperature of simulation analysis is 91.5 ℃; the lower right hand corner of the heat sink structure in fig. 8, the temperature for the simulation analysis was 88.3 ℃. It can be concluded that the heat dissipation performance of the lighting device radiator can be further improved by arranging the heat dissipation fins.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the embodiments of the application, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A lighting device heat sink, wherein the heat sink comprises: a first heat sink member and a second heat sink member; the first heat sink piece is axially butted with the second heat sink piece; the first heat dissipation part is provided with a first heat dissipation rib, a plurality of heat dissipation ribs are arranged on the periphery of the first heat dissipation rib, the second heat dissipation part is provided with a second heat dissipation rib, and the first heat dissipation rib is in butt joint with the second heat dissipation rib; an opening is formed between each radiating fin of the plurality of radiating fins and the second radiating part to form an upper convection channel and a lower convection channel.

2. The heat sink as claimed in claim 1, wherein the plurality of fins are annular structures, and each of the plurality of fins is spaced apart.

3. The heat sink of claim 1,

the first heat dissipation part is provided with a clamping groove, and the second heat dissipation part is provided with a clamping hook matched with the clamping groove on the first heat dissipation part;

the first heat dissipation part and the second heat dissipation part are in axial butt joint through the clamping grooves and the clamping hooks.

4. The heat sink of claim 3,

the clamping hook is a wedge-shaped clamping hook, and the first heat dissipation part and the second heat dissipation part are rotationally buckled with the clamping hook through the clamping groove.

5. The heat sink of claim 1,

the inner wall of the first heat dissipation part is provided with first threads, the outer wall of the second heat dissipation part is provided with second threads matched with the first threads, and the first heat dissipation part and the second heat dissipation part are in axial butt joint through the first threads and the second threads.

6. A lighting device characterized in that it comprises a lighting device heat sink as claimed in any one of claims 1 to 5;

the lighting device further comprises a light source, and the light source is arranged on the light source mounting part on the first heat dissipation part.

7. The lighting device of claim 6,

the first heat dissipation part is of a barrel-shaped structure, an accommodating cavity with one open end is formed in the first heat dissipation part, and the bottom of the accommodating cavity is the light source installation part.

8. The lighting device of claim 6,

the lighting device further includes: a first lens disposed at a first mounting location of the second heat sink; and a second lens disposed at a second mounting location of the second heat sink.

9. The lighting device of claim 8,

the first lens is accommodated in the accommodating cavity of the first heat dissipation part, a concave part is arranged on the first lens, and the light source is arranged opposite to the concave part.

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