CN216716154U - Elastic heat dissipation part and lamp - Google Patents
Elastic heat dissipation part and lamp Download PDFInfo
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- CN216716154U CN216716154U CN202220185923.9U CN202220185923U CN216716154U CN 216716154 U CN216716154 U CN 216716154U CN 202220185923 U CN202220185923 U CN 202220185923U CN 216716154 U CN216716154 U CN 216716154U
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- heat transfer
- temperature element
- heat sink
- heat dissipation
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Abstract
The utility model provides an elastic heat radiating piece and a lamp, which are elastic structures integrally formed by bending a metal plate, and comprise a heat conducting part and a heat transfer part, wherein the heat conducting part is formed by bending one side of the heat transfer part and forms an opening structure with the heat transfer part, and a high-temperature element is clamped in the opening structure; in an assembly state, the heat conduction part is contacted with the front surface of the high-temperature element, and the bending angle of the heat conduction part and the heat transfer part is larger than the corresponding bending angle in an initial state; the heat transfer part is fixed with the external fixing surface of the heat radiating piece, and the high-temperature element is connected and fixed with the heat transfer part; the thermal expansion coefficient of the heat sink material is smaller than that of the sandwiched high-temperature element shell material. The high-temperature element can be tightly attached to the heat dissipation piece by combining the forming angle and the material of the high-temperature element, and the problem of partial loss of the heat dissipation function caused by virtual contact or small contact area is solved; meanwhile, due to the difference of the thermal expansion coefficients, when the temperature of the high-temperature element is increased, the heat dissipation part is attached to the high-temperature element more tightly, and the heat conduction effect is better.
Description
Technical Field
The utility model relates to the technical field of illumination, in particular to an elastic heat dissipation piece and a lamp.
Background
The existing lamps such as spot lamps are mostly driven by aluminum fixing frames, and heat is conducted in a radiation heat dissipation mode by driving a shell to be in contact with the fixing frames. Although the heat conductivity coefficient of the aluminum material is excellent, the aluminum fixing frame is difficult to be tightly attached to a driver due to the low elastic modulus of the aluminum fixing frame, and gaps are reserved, and the conduction area is difficult to control due to the reserved gaps; on the other hand, air in the gap causes poor heat conductivity, which affects the driving heat dissipation efficiency and further affects the heat dissipation of the whole lamp. In addition, the fixing frame is fixed by screws, the depth of the lamp body influences the screw installation, and the labor cost is increased.
SUMMERY OF THE UTILITY MODEL
In view of the above problems in the prior art, according to an aspect of the present invention, an elastic heat sink is provided, which is an elastic structure formed by integrally bending a metal plate, and includes a heat conducting portion and a heat transferring portion, wherein the heat conducting portion is formed by bending one side of the heat transferring portion and forms an opening structure with the heat transferring portion, and a high temperature element is clamped in the opening structure;
in an assembly state, the heat conduction part is contacted with the front surface of the high-temperature element, and the bending angle of the heat conduction part and the heat transfer part is larger than the corresponding bending angle in an initial state;
the heat transfer part is fixed with a first fixing surface outside the heat dissipation part, and the high-temperature element is connected and fixed with the heat transfer part;
the thermal expansion coefficient of the heat sink material is smaller than that of the sandwiched high-temperature element shell material.
The design of the elastic structure is combined with the forming angle and the material of the elastic structure, so that the high-temperature element can be tightly attached to the heat dissipation piece, the problem that the heat dissipation function is partially lost due to virtual contact or small contact area of the existing product is solved, and the effect on a high-power product is particularly obvious. Meanwhile, the material with the thermal expansion coefficient smaller than that of the sandwiched high-temperature element is used, so that the heat dissipation part is attached to the high-temperature element more tightly along with the increase of the temperature of the high-temperature element, and the heat conduction effect is better.
Furthermore, the heat dissipation part also comprises a heat dissipation part which is formed by bending from one end of the heat transfer part, and in an assembly state, the bending angle of the heat dissipation part and the heat transfer part is smaller than the corresponding bending angle in an initial state. The elasticity of heat dissipation part is with its second stationary plane of outside closely laminating, improves the heat conduction effect when fixed heat dissipation spare.
Furthermore, a buckle structure is arranged on the heat transfer part of the heat dissipation piece, and the heat dissipation piece is embedded and fixed with the edge of the first fixing surface through the buckle structure. Fix the replacement with the screw assembly and buckle the structure, carry out the assembly of couple formula with the radiating piece, make heat transfer portion can closely laminate with first stationary plane is whole, can simplify the assembly process, promote assembly efficiency, effectively increase heat conduction area simultaneously.
Preferably, the heat dissipation member is made of hot-dip galvanized steel material, so that the requirements on heat dissipation effect and structural deformation can be better met.
Preferably, the thickness of the heat dissipation member is in the range of 0.4-0.8mm, so that the requirements of assembly and clamping can be well met.
Further, a heat conduction gasket is arranged on the contact surface of the heat dissipation piece and the high-temperature element, and the thermal expansion coefficient of the material of the heat dissipation piece is smaller than that of the material of the heat conduction gasket. The heat-conducting gasket is arranged, so that the heat dissipation requirement can be better met, and different sizes and specifications of high-temperature elements can be better met.
Further, the heat conduction portion of the heat sink has a warped edge. The warped edge is designed to facilitate lifting and assembly of the high temperature component.
Further, the area of the heat conduction portion of the heat sink is smaller than the area of the heat transfer portion.
According to another aspect of the utility model, a lamp is further provided, which includes any one of the heat dissipation members, a light source, a lamp body, a driver and a rear cover, wherein the driver is fixed in the heat dissipation member, the heat dissipation member is fixed with the plane of the lamp body supporting column through a buckle structure, and the heat dissipation member of the heat dissipation member is fixedly pressed with the rear cover. According to the scheme, through the improvement of the structure and the material, the heat dissipation problem can be effectively solved, meanwhile, the assembly of the lamp is simplified, and the lamp has the advantages of effectively fixing the driving and increasing the heat dissipation benefit.
Further, the driving of the lamp adopts a heat-conducting plastic shell. By using the heat-conducting plastic of the bulb heat-radiating piece for reference, the heat-conducting plastic is applied to a driving product, and the heat-conducting plastic with different heat-conducting coefficients can be adopted, so that the heat-conducting requirements of different power designs can be met, and the cost can be reduced. PCR (post-consumer recycle) plastics may also be used to meet the demand for sustainable recycling economy.
The utility model improves the common high-temperature element heat dissipation part of the lamp in the prior art, selects materials by the design of an elastic structure and the combination of thermal expansion characteristics, overcomes the problem of virtual contact of an aluminum fixing frame, greatly increases the contact area of the heat dissipation part and the fixing surface of the lamp body, and improves the heat dissipation effect; meanwhile, the assembly process of the whole lamp is simplified, and the assembly efficiency is improved.
Drawings
The accompanying drawings, which are included to provide an understanding of the embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model.
FIG. 1 is an exploded view of a lamp according to an embodiment of the present invention;
FIG. 2 is an assembly view of a drive and heat sink in one embodiment of the present invention;
FIG. 3 is an assembly view of the driving member, the heat sink and the lamp body according to an embodiment of the present invention;
FIG. 4 is a schematic view of a heat dissipation device according to an embodiment of the present invention;
FIG. 5 is a schematic view of a driving profile according to an embodiment of the present invention.
The meaning of each number in the figure: 1. the LED lamp comprises a face ring, 2 glass, 3 a reflective cup, 4 a light source support, 5 a light source, 6 a lamp body, 7 a heat dissipation member, 8 a drive, 9 a rear cover, 10 a swing rod, 11 a power supply head, S1, S2, S3, S4, S5 a screw, 71 a heat conduction part, 72 a heat transfer part, 73 a heat dissipation part and 74 a buckle structure.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The following further describes the design of the present invention with reference to specific examples.
Fig. 1 is an exploded view of a lamp according to an embodiment of the present invention, fig. 2 is an assembly view of a driving and heat dissipating member according to the embodiment of the present invention, and fig. 3 is an assembly view of the driving and heat dissipating member and a lamp body according to the embodiment of the present invention. In this embodiment, the glass 2 is snap-fitted with the face ring 1 and is screwed on the ribs of the lamp body 6, the reflective cup 3 is screwed on the light source support 4, the back of the light source 5 is coated with heat-conducting silicone grease, and 4 screws S3 lock the light source support 4 and the lamp body 6 to form an optical combination structure of the whole lamp. The driving part 8 is fixed on the heat dissipation part 7 by a screw S5, the heat conduction part 71 of the heat dissipation part 7 is tightly pressed on the front surface of the driving part 8, the buckling structure 74 of the heat dissipation part 7 is tightly clamped on the supporting column of the lamp body 6, the heat conduction part 72 of the heat dissipation part 7 is tightly attached to the plane of the supporting column of the lamp body 6, and the rear cover 9 is locked by a screw S2 (a threaded fastening agent needs to be screwed) and then tightly presses the heat dissipation part 73 of the heat dissipation part 7 to form a heat dissipation main body; the power source head 11 is combined with the swing arm, and a swing structure is formed by tightly matching the screw S4 with the rear cover 9.
Fig. 4 is a schematic diagram of a heat dissipating member in the present embodiment, which is an elastic structure formed by integrally bending a metal plate, and includes a heat conducting portion 71 contacting with the driver 8, a heat transferring portion 72 contacting with a supporting cylindrical surface inside the lamp body 6, a heat dissipating portion 73 contacting with the rear cover 9, and a fastening structure 74 for fixing.
The heat conducting part 71 has a certain elastic deformation and is tightly attached to the driving Tc temperature surface to reduce the driving temperature; in order to enable the heat conduction part to have elastic deformation, the bending angle of the heat conduction part 71 is slightly smaller than 90 degrees, in the embodiment, the bending angle of the heat conduction part 71 is 88 degrees, and the heat conduction part can be tightly pressed on the Tc temperature surface after being assembled.
The heat dissipation part 73 is in elastic contact with the rear cover 9, so that the heat dissipation part 7 and the lamp body 6 are tightly pressed by elasticity and are not easy to shake, and the heat dissipation part 7 is tightly attached to the rear cover 9 to enhance heat conduction; in order to allow the elastic deformation, the bending angle of the heat dissipating part 73 is slightly larger than 90 °, in this embodiment, as shown in the dashed line box in fig. 3 (b), the bending angle of the heat dissipating part 73 is 92 °, and the rear cover 9 can be pressed after assembly. In another preferred embodiment, the plane of the heat dissipation part 73 may be punched out in the shape of the surface of the rear cover to further increase the heat conductive contact area.
The snap structure 74 is used to hook-mount the heat sink to the support pillar plane of the lamp body 6, as shown in fig. 3 (a), instead of the conventional screw mounting, so that the entire plane of the heat transfer portion 72 is attached to the support pillar plane, thereby greatly increasing the heat-conducting contact area and simplifying the mounting process.
In another preferred embodiment, the thickness of the heat sink is controlled to be between 0.4-0.8mm based on assembly and clamping considerations; based on heat dissipation and deformation considerations, the material of the heat sink is selected from hot-dip galvanized Steel (SGCC).
In another preferred embodiment, as shown in fig. 2 (a), the heat conducting portion 71 is designed with a warped rim to facilitate the assembly of the lift and the drive.
In another preferred embodiment, a heat conducting pad is added between the heat conducting part 71 and the front surface of the driver 8 in order to better satisfy heat dissipation and to satisfy drivers of different size specifications. Specifically, a heat-conducting silicone sheet with certain viscosity can be adopted for a smaller-sized driver, and a metal patch is adopted for a longer-sized driver, such as a copper film coating structure which has a double-layer structure, wherein one layer is a copper layer in contact with a heat-conducting part, and the other layer is an adhesive layer fixed with the driver, such as an adhesive layer, so as to meet the requirements of different powers, environments and design schemes. In the aspect of heat conductivity, for a low-power lamp, a silica gel sheet with the heat conductivity of 1.0-5.0W/(m.K) is adopted, and the heat conductivity is preferably 3.0W/(m.K); for high-power lamps, the thickness range of the copper film patch is 0.01-0.3mm, and 0.1mm is preferably selected.
In another preferred embodiment, the heat dissipation member is made of a metal material with a lower thermal expansion coefficient than that of the driving plastic shell and the heat-conducting gasket, according to the principle of thermal expansion and contraction, when the driving temperature rises, the driving plastic shell and the heat-conducting gasket with relatively higher thermal expansion coefficients have larger size increase, meanwhile, the metal driving fixing frame with the lower thermal expansion coefficient has smaller size increase, the gap between the driving fixing frame and the driving or heat-conducting gasket is relatively smaller, the attachment is tighter, and the heat-conducting capability effect is better.
Fig. 5 is a schematic external view of the lamp driving device in this embodiment, the driving housing may be made of thermal conductive plastics with different thermal conductivities, the thermal conductivity is preferably 0.6-1.0W/(m · K), and the thermal conductive agent used includes, but is not limited to, oxides, hydroxides, graphene, and the like. And PCR (post-consumer recycling) plastics can be adopted to realize sustainable development and low-carbon production.
In this embodiment, the surface of the high-temperature device is further provided with a heat-conducting silicone grease for heat conduction, the heat-conducting silicone grease is in a solid block form and is attached to the surface of the high-temperature device, and the heat conductivity coefficient is preferably 1.5-2.5W/(m · K).
The above embodiments provide detailed descriptions of the present invention, and it can be seen that, through the design of the elastic structure, the heat dissipation element can effectively improve the heat dissipation effect of high temperature elements such as a driver in a lamp and simplify the assembly process, and in combination with the heat conduction pad, a reasonable material is selected according to the actual lamp efficiency and design, so as to further improve the heat conduction efficiency.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and 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. The word 'comprising' does not exclude the presence of elements or steps not listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.
Claims (10)
1. An elastic heat dissipation part is characterized in that the elastic structure is formed by integrally bending a metal plate and comprises a heat conduction part and a heat transfer part, wherein the heat conduction part is formed by bending one side of the heat transfer part and forms an opening structure with the heat transfer part, and a high-temperature element is clamped in the opening structure;
in an assembly state, the heat conduction part is in contact with the front surface of the high-temperature element, and the bending angle of the heat conduction part and the heat transfer part is larger than the corresponding bending angle in an initial state;
the heat transfer part is fixed with a first fixing surface outside the heat dissipation part, and the high-temperature element is connected and fixed with the heat transfer part;
the thermal expansion coefficient of the material of the heat dissipation piece is smaller than that of the material of the sandwiched high-temperature element shell.
2. The heat sink according to claim 1, further comprising a heat sink portion bent from one end of the heat transfer portion, wherein in an assembled state, a bending angle between the heat sink portion and the heat transfer portion is smaller than a corresponding bending angle in an initial state.
3. The heat sink according to claim 1, wherein a snap structure is provided on the heat transfer portion, and the heat sink is fixed to the edge of the first fixing surface by the snap structure.
4. The heat sink of claim 1, wherein the heat sink is a hot-dip galvanized steel material.
5. The heat sink of claim 1, wherein the heat sink has a thickness in the range of 0.4-0.8 mm.
6. The heat sink of claim 1, wherein a thermally conductive gasket is disposed on an interface with the high temperature component, the heat sink material having a coefficient of thermal expansion less than the coefficient of thermal expansion of the thermally conductive gasket material.
7. The heat sink of claim 1, wherein the heat conduction portion has warped edges.
8. The heat sink according to claim 1, wherein an area of the heat conduction portion is smaller than an area of the heat transfer portion.
9. A lamp comprising the heat dissipating member of any one of claims 1 to 8, further comprising a light source, a lamp body, a driver and a rear cover, wherein the driver is fixed in the heat dissipating member, the heat dissipating member is fixed to a supporting pillar plane of the lamp body by a snap structure, and the heat dissipating member is fixed to the rear cover by pressing.
10. A light fixture as recited in claim 9, wherein said driver comprises a thermally conductive plastic housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220185923.9U CN216716154U (en) | 2022-01-24 | 2022-01-24 | Elastic heat dissipation part and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220185923.9U CN216716154U (en) | 2022-01-24 | 2022-01-24 | Elastic heat dissipation part and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216716154U true CN216716154U (en) | 2022-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220185923.9U Active CN216716154U (en) | 2022-01-24 | 2022-01-24 | Elastic heat dissipation part and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216716154U (en) |
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2022
- 2022-01-24 CN CN202220185923.9U patent/CN216716154U/en active Active
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