CN103968343A - Heat dissipating device and lighting device with same - Google Patents
Heat dissipating device and lighting device with same Download PDFInfo
- Publication number
- CN103968343A CN103968343A CN201310030557.5A CN201310030557A CN103968343A CN 103968343 A CN103968343 A CN 103968343A CN 201310030557 A CN201310030557 A CN 201310030557A CN 103968343 A CN103968343 A CN 103968343A
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- heat abstractor
- driver
- curved profile
- matrix
- container cavity
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Abstract
The invention relates to a heat dissipating device (100) used for the driver of a lighting device. The heat dissipating device comprises a base body (1), wherein the base body (1) comprises an outer wall (11) and an inner wall (12), wherein the inner wall (12) defines an accommodating cavity (13) used for accommodating the driver, the outline of the cross section of the accommodating cavity (13) is designed to be a smoothly transitional curve outline, and the curve outline is designed for enabling the straight-line distance of two points, farthest away from the surface of the driver, of the curve outline to be smaller than the straight-line distance of the two farthest points of the curve outline.
Description
Technical field
The present invention relates to a kind of heat abstractor for lighting device.In addition the invention still further relates to, a kind of lighting device of the heat abstractor with the above-mentioned type.
Background technology
LED alternative lamp substitutes traditional lighting device, for example incandescent lamp and fluorescent lamp more and more.This is because such alternative lamp is more energy-conservation, size is less and have the longer life-span.Along with the development of technology, itself can realize higher efficiency LED encapsulation, and its life-span reaches 50,000 hours.But in the time that LED and LED driver, thermal management device and optical element are together integrated in alternative lamp, how the efficiency of alternative lamp and life-span highly depend on designing driver, heat abstractor and optical element.The good row of heat who how LED driver is distributed falls apart in surrounding environment, has become the key factor of the luminous efficiency of restriction LED lighting device.
In conventional LED lighting device, LED driver is arranged in the container cavity of radiator conventionally, and this container cavity is usually designed to columniform cavity.After LED driver is placed in this container cavity, in this container cavity, inject casting glue.Heat from LED driver is delivered on radiator by casting glue, and further row falls apart in surrounding environment.But a significant defect of this columniform cavity is, has larger gap between LED driver and the radiator inwall of formation cavity.In order to obtain good heat conductivility, must this region be filled up by casting glue, this has improved the cost of whole lighting device significantly, and this is because the cost of casting glue is relatively high, has also increased the overall weight of lighting device simultaneously.In addition, because the spacing between LED driver and radiator inwall is relatively large, this has also strengthened the length of thermally conductive pathways, and this is unfavorable for improving the integral heat sink performance of lighting device.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of heat abstractor for lighting device, this heat abstractor allows to fill with the casting glue of relatively small amount, has reduced cost, and can obtain better heat dispersion simultaneously.In addition the invention allows for, a kind of lighting device of the heat abstractor with the above-mentioned type.
First object of the present invention realizes thus by a kind of heat abstractor for lighting device, this heat abstractor comprises matrix, this matrix comprises outer wall and inwall, this inwall limits the container cavity for holding driver, wherein, the curved profile that the cross section profile of container cavity is designed to seamlessly transit, wherein, air line distance between farthest 2 of the mutual distance that air line distance between farthest 2 of the surface that this curved profile is designed to the distance driver that makes curved profile is less than curved profile, thereby make the surface of inwall and driver keep as far as possible little spacing.The cross section of the container cavity in traditional heat abstractor is circular, that is to say, this circular round dot is consistent apart from the distance of the inwall that limits container cavity, so after the location positioning of driver, mate for the size to driver, will inevitably cause some region of driver and the spacing of inwall excessive.And the curved profile of the inwall of restriction container cavity of the present invention on cross section adjusted, in specific region, the trend of curved profile is modified, that is to say the distance having reduced between inwall and the surface of driver, thereby needn't fill too much Embedding Material, and also reduce the length of thermally conductive pathways, improved the heat dispersion of heat abstractor.
Propose according to the present invention, curved profile is designed to have through first diameter of 2 farthest of the mutual distance on center the junction curve profile of curved profile with perpendicular to the first diameter and through the Second bobbin diameter at the center of curved profile, and wherein the length of the first diameter is greater than the length of Second bobbin diameter.Such curved profile width is in a first direction larger, and in the second direction vertical with first direction, width is less.Because there is larger width in the plane that driver limits at its circuit board conventionally, thickness in the direction perpendicular to circuit board is relatively little, so after drive arrangement is in container cavity, circuit board is resisted against on the inwall that limits container cavity in a first direction, and driver distance with respect to this inwall in second direction has been shortened effectively.
Preferably, curved profile is oval, and wherein, the first diameter is oval-shaped major axis, and Second bobbin diameter is described oval-shaped minor axis.Oval-shaped curved profile is more prone to processing and processes, and this has reduced the manufacture difficulty according to heat abstractor of the present invention to a certain extent.In addition, the cross section profile of matrix is also designed to ellipse accordingly, and the cross section profile of this matrix matches with the cross section profile of container cavity, to be conducive to save the material of manufacturing heat abstractor.
Further propose according to the present invention, heat abstractor also comprises the multiple fin that are formed on outer wall, and wherein fin is arranged so that on outer wall the line between the free end of fin connects into circle.Fin has increased the contact area of heat abstractor and surrounding air significantly, and this has also further improved the heat dispersion according to heat abstractor of the present invention.In addition, this arrangement of fin on outer wall makes heat abstractor form on the whole the cylindrical of a standard, and this is conducive to heat abstractor and is installed in traditional position to be installed.
Advantageously, fin has the cross section of T shape.The cross section of this T shape has further increased the area of dissipation of heat abstractor, has improved the heat dispersion of heat abstractor.
Preferably, matrix and fin are made into integration.Can be made into according to heat abstractor of the present invention by a manufacturing process, reduced the manufacturing cost of heat abstractor.
A preferred design according to the present invention proposes, and matrix is made of metal, and metal has higher thermal conductivity, and this is conducive to improve the heat dispersion of heat abstractor.
Preferably, heat abstractor also includes insulation shell, be arranged in container cavity to insulation shell form fit, and drive arrangement is in insulation shell.Insulation shell is kept apart the matrix of driver and metal reliably, prevents the generation of possible leaky.Advantageously, insulation shell is made up of insulating and heat-conducting plastics.
Another preferred design according to the present invention proposes, and matrix is made up of insulating and heat-conducting plastics.This has reduced the weight of heat abstractor on the whole.But, it may be noted that at this, the insulating and heat-conducting plastics of making matrix or insulation shell is construed as such plastics, and it is electric insulation, but has the relatively good capacity of heat transmission.
Another object of the present invention realizes by a kind of lighting device, and this lighting device comprises the radiator of light source and driver and the above-mentioned type, wherein, and in the container cavity of drive containment in the matrix of radiator.Lighting device according to the present invention has better heat dispersion, and it is with low cost, easy to manufacture simultaneously.
Propose according to the present invention, in container cavity, fill Embedding Material.Embedding Material can be transmitted to the heat of driver on heat abstractor well.
Preferably, light source is LED light source.LED light source has advantages of that the life-span is long, luminous efficiency is high and environmental protection.
It should be understood that the feature of different exemplary embodiment described herein can be bonded to each other if do not have other dated especially.
Brief description of the drawings
Accompanying drawing forms the part of this description, for helping further to understand the present invention.These accompanying drawings illustrate embodiments of the invention, and are used for illustrating principle of the present invention together with description.Identical parts represent with identical label in the accompanying drawings.Shown in figure:
Fig. 1 is the sectional view according to heat abstractor of the present invention, in this heat abstractor, is furnished with driver;
Fig. 2 is the sectional view according to lighting device of the present invention.
Detailed description of the invention
In being discussed in more detail below, reference forms the accompanying drawing of the part of this description, wherein, shows and can implement specific embodiments of the invention in the mode of illustration.About figure, use with reference to the direction of described accompanying drawing such as " top ", " end ", 'fornt', 'back', " leading ", " trailing " directional terms.Because the assembly of the embodiment of the present invention can be placed on many different directions, thus direction term only for explanation, and without any restriction the meaning.It should be understood that and can use other embodiment, and can carry out structure or logical changes under the prerequisite that does not deviate from scope of the present invention.So, describes in detail and should not be understood to the restrictive meaning below, and the present invention is defined by the appended claims.
Fig. 1 shows according to the sectional view of heat abstractor 100 of the present invention.As seen from the figure, this heat abstractor 100 comprises matrix 1, and wherein, matrix 1 comprises outer wall 11 and inwall 12, and inwall 12 limits the container cavity 13 for holding described driver.Further visible in the drawings, driver 4 is arranged in this container cavity 13.
Design principle of the present invention is, cross section profile to container cavity 13 is modified, the curved profile that makes the cross section profile of container cavity 13 be designed to seamlessly transit, air line distance between farthest 2 of the mutual distance that air line distance between farthest 2 of the surface that this curved profile is designed to the distance driver 4 that makes curved profile is less than curved profile, and then make inwall 12 and the surface of driver 4 keep minimum spacing.For this reason, curved profile is designed to have through the first diameter X of 2 farthest of the mutual distance on center the junction curve profile of curved profile with perpendicular to the first diameter X and through the Second bobbin diameter Y at the center of curved profile, and wherein the length of the first diameter X is greater than the length of Second bobbin diameter Y.In the specific embodiment illustrating in the drawings, this curved profile is actually ellipse, and the first diameter X is oval-shaped major axis, and Second bobbin diameter Y is oval-shaped minor axis.See on the whole, it is oval-shaped column cavity that container cavity 13 is designed to cross section.But, although it is pointed out that and point out that in the present embodiment it is oval that container cavity 13 is established cross section at this, but this cross section is not restricted to ellipse, can certainly be multiple circles tangent to each other or oval.
Visible in Fig. 1, driver 4 comprises circuit board 41 and is arranged in the multiple electronic devices 42 on circuit board 41.The width of circuit board 41 is obviously greater than the height at electronic device 42, in other words the integral thickness of island driver 4.And circuit board 41 is namely arranged in the direction of the first diameter X at major axis, the two ends of circuit board 41 are resisted against on inwall 12, and the distance of electronic device 42 distance inwall 12 in the direction of Second bobbin diameter Y obviously can be shorter, the internal capacity that has so just relatively reduced container cavity 13, has namely correspondingly reduced the amount that is filled in the Embedding Material 5 in this container cavity 13.In addition, from Fig. 1, further, the cross section profile of matrix 1 is also oval, and matrix 1 can be mated with the cross section profile of container cavity 13, thereby reduces the material cost of manufacturing heat abstractor 100.
In addition, heat abstractor 100 also comprises the multiple fin 14 that are formed on outer wall 11, and wherein fin 14 is arranged so that on outer wall 11 line between the free end of fin 14 connects into circle.This arrangement of fin 14 on outer wall 11 makes heat abstractor 100 form on the whole the cylindrical of a standard, and this is conducive to heat abstractor 100 and is installed in traditional position to be installed.In the present embodiment, fin 14 has the cross section of T shape.The cross section of this T shape has further increased the area of dissipation of heat abstractor 100, has improved the heat dispersion of heat abstractor 100.In addition, matrix 1 is made into integration with fin 14, and certainly, the two also can be separately made.
In the present embodiment, matrix 1 is made of metal.In order to meet the electric insulation requirement in the middle of driver 4 and heat abstractor 100, heat abstractor 100 also includes insulation shell 2, be arranged in container cavity 13 to insulation shell 2 form fit, and driver 4 is arranged in by insulating and heat-conducting plastics and makes in insulation shell 2.
In another optional embodiment of the present invention, matrix 1 also can be made up of insulating and heat-conducting plastics.In this case, matrix 1 itself can play the effect of insulation, therefore no longer needs to be equipped with independent insulation shell 2.
Fig. 2 shows according to the sectional view of lighting device 200 of the present invention.As seen from the figure, this lighting device comprises the light source and the driver 4 that are designed to LED light source 3, in the container cavity 13 of the matrix 1 of this drive arrangement radiator 100 shown in Figure 1.In this container cavity 13, be also filled with Embedding Material 5.Due to this special structure outline design of container cavity 13, make the inwall 12 that limits container cavity 13 more near driver 4, this has shortened from driver to matrix 1 thermally conductive pathways significantly, and has reduced the loading of Embedding Material 5, has reduced the production cost of lighting device 200.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any amendments of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Reference number
1 matrix
11 outer walls
12 inwalls
13 container cavities
14 fin
2 insulation shells
3 light sources, LED light source
4 drivers
41 circuit boards
42 electronic devices
5 Embedding Materials
X the first diameter
Y Second bobbin diameter
100 heat abstractors
200 lighting devices
Claims (14)
1. the heat abstractor for the driver of lighting device (100), comprise matrix (1), described matrix (1) comprises outer wall (11) and inwall (12), described inwall (12) limits the container cavity (13) for holding described driver, it is characterized in that, the curved profile that the cross section profile of described container cavity (13) is designed to seamlessly transit, wherein, air line distance between farthest 2 of the mutual distance that air line distance between farthest 2 of the surface that described curved profile is designed to make driver described in the distance of described curved profile is less than described curved profile.
2. heat abstractor according to claim 1 (100), it is characterized in that, described curved profile is designed to have through the center of described curved profile and connects first diameter (X) of 2 farthest of mutual distance on described curved profile and perpendicular to described the first diameter (X) and through the Second bobbin diameter (Y) at the center of described curved profile, the length of wherein said the first diameter (X) is greater than the length of Second bobbin diameter (Y).
3. heat abstractor according to claim 1 and 2 (100), is characterized in that, described curved profile is oval, and wherein, described the first diameter (X) is described oval-shaped major axis, and described Second bobbin diameter (Y) is described oval-shaped minor axis.
4. heat abstractor according to claim 3 (100), is characterized in that, the cross section profile of described matrix (1) is oval.
5. heat abstractor according to claim 4 (100), it is characterized in that, described heat abstractor (100) also comprises the multiple fin (14) that are formed on described outer wall (11), and wherein said fin (14) is arranged so that on described outer wall (11) line between the free end of described fin (14) connects into circle.
6. heat abstractor according to claim 5 (100), is characterized in that, described fin (4) has the cross section of T shape.
7. heat abstractor according to claim 5 (100), is characterized in that, described matrix (1) is made into integration with described fin (14).
8. heat abstractor according to claim 1 and 2 (100), is characterized in that, described matrix (1) is made of metal.
9. heat abstractor according to claim 8 (100), it is characterized in that, described heat abstractor (100) also includes insulation shell (2), be arranged in described container cavity (13) to described insulation shell (2) form fit, and described drive arrangement is in described insulation shell (2).
10. heat abstractor according to claim 9 (100), is characterized in that, described insulation shell (2) is made up of insulating and heat-conducting plastics.
11. heat abstractors according to claim 1 and 2 (100), is characterized in that, described matrix (1) is made up of insulating and heat-conducting plastics.
12. 1 kinds of lighting devices (200), comprise light source (3) and driver (4), it is characterized in that, described lighting device also comprises according to the radiator described in any one in claim 1 to 11 (100), wherein, described driver (4) is contained in the container cavity (13) in the matrix (1) of described radiator (100).
13. according to lighting device described in claim 12 (200), it is characterized in that, fill Embedding Material (5) in described container cavity (13).
14. lighting devices according to claim 12 (200), is characterized in that, described light source (3) is LED light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030557.5A CN103968343A (en) | 2013-01-25 | 2013-01-25 | Heat dissipating device and lighting device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030557.5A CN103968343A (en) | 2013-01-25 | 2013-01-25 | Heat dissipating device and lighting device with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103968343A true CN103968343A (en) | 2014-08-06 |
Family
ID=51238172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310030557.5A Pending CN103968343A (en) | 2013-01-25 | 2013-01-25 | Heat dissipating device and lighting device with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103968343A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201803159U (en) * | 2010-08-17 | 2011-04-20 | 史杰 | Efficient LED bulb |
| CN201992420U (en) * | 2011-03-09 | 2011-09-28 | 翁小翠 | High-power LED lamp with high radiating efficiency |
| CN202140920U (en) * | 2011-07-13 | 2012-02-08 | 浦江英孚光电科技有限公司 | Light-emitting diode (LED) street lamp |
| CN102644872A (en) * | 2012-04-01 | 2012-08-22 | 德清新明辉电光源有限公司 | Light-emitting diode (LED) lamp with good insulativity |
| CN102691997A (en) * | 2011-03-25 | 2012-09-26 | 欧司朗股份有限公司 | Radiation device and lighting device provided with same |
-
2013
- 2013-01-25 CN CN201310030557.5A patent/CN103968343A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201803159U (en) * | 2010-08-17 | 2011-04-20 | 史杰 | Efficient LED bulb |
| CN201992420U (en) * | 2011-03-09 | 2011-09-28 | 翁小翠 | High-power LED lamp with high radiating efficiency |
| CN102691997A (en) * | 2011-03-25 | 2012-09-26 | 欧司朗股份有限公司 | Radiation device and lighting device provided with same |
| CN202140920U (en) * | 2011-07-13 | 2012-02-08 | 浦江英孚光电科技有限公司 | Light-emitting diode (LED) street lamp |
| CN102644872A (en) * | 2012-04-01 | 2012-08-22 | 德清新明辉电光源有限公司 | Light-emitting diode (LED) lamp with good insulativity |
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Application publication date: 20140806 |
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