CN203586139U - Cooling fin and lighting device with same - Google Patents
Cooling fin and lighting device with same Download PDFInfo
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- CN203586139U CN203586139U CN201320623775.5U CN201320623775U CN203586139U CN 203586139 U CN203586139 U CN 203586139U CN 201320623775 U CN201320623775 U CN 201320623775U CN 203586139 U CN203586139 U CN 203586139U
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- substrate
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- fin
- ligthing paraphernalia
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The utility model provides a lighting device which is of a structure with no need for an insulation sheet and capable of restraining discharging from a substrate to a cooling fin. The lighting device (100) is provided with a light source body (11) and the cooling fin (21), wherein the light source body (11) forms a light emitting element (13) on the surface of the substrate (12), and the cooling fin (21) dissipates heat of the light source body (11). The light source body (11) is arranged on the cooling fin (21) under the state that the light source body (11) contacts with a back surface (12b) of the substrate (12). Groove portions (21d and 21d) are formed in the overlapping part of the cooling fin (21) and the back surface (12b) of the substrate (12) locally.
Description
Technical field
The utility model relates to a kind of fin (heat sink) and possesses the technology of the ligthing paraphernalia of this fin.
Background technology
All the time, known substrate surface possesses the light source body No. 2013-51375, TOHKEMY (for example, with reference to) of light-emitting component.Such light source body can be for being called as ligthing paraphernalia of LED module etc.This ligthing paraphernalia makes the thermal transpiration of light source body via fin.As an example of LED module, have the COB(Chip on Board that forms light emitting diode, wiring diagram on substrate) type light emitting module etc.
Utility model content
The problem that utility model will solve
Yet such ligthing paraphernalia must suppress the generation by the caused leakage current of lightning surge (lightning surge).Particularly, such ligthing paraphernalia, even because large voltage has been born in thunderbolt, also must be able to suppress to discharge to fin from substrate.Therefore,, in the ligthing paraphernalia of prior art, its structure suppresses to occur from substrate to fin the structure of electric discharge for clamp insulating trip between light source body and fin.This structure example is as disclosed by No. 2013-65456, TOHKEMY.But, from the viewpoint that reduces costs, boosts productivity, need to abandon the ligthing paraphernalia of insulating trip.
The disclosed fin of the application, object is to provide the fin of electric discharge can occur from substrate with simple OILS STRUCTURE DEPRESSION.The object of the disclosed ligthing paraphernalia of the application is to provide and can suppresses to occur from substrate to fin with simple structure the ligthing paraphernalia of electric discharge.
Solving the disclosed ligthing paraphernalia of method the application of problem, is to possess at substrate surface to have the light source body of light-emitting component and make the ligthing paraphernalia of fin of the thermal transpiration of described light source body.Described light source body is installed on described fin under the state contacting with described substrate back.The part contacting on described fin, with described substrate back is formed with groove partly.
The disclosed ligthing paraphernalia of the application, take said structure as basis, can adopt following such form.
That is, in the disclosed ligthing paraphernalia of the application, preferably, the structure that described groove is formed than described substrate side surfaces more in the inner part for forming the medial surface of this groove.
In the disclosed ligthing paraphernalia of the application, preferably, described groove is the structure that makes electric conductor from being arranged at described substrate form longlyer than setting to the creepage distance of described medial surface.
In the disclosed ligthing paraphernalia of the application, preferably, the structure that described groove is formed than the side of described substrate more in the outer part for forming the lateral surface of this groove.
In the disclosed ligthing paraphernalia of the application, preferably, described groove is the structure that makes the space length from described substrate side surfaces to described lateral surface form longlyer than setting.
In the disclosed ligthing paraphernalia of the application, preferably, make described groove for forming the bottom side structure that form parallel with described substrate back of this groove.
In the disclosed ligthing paraphernalia of the application, preferably, described groove is the structure that makes the space length from described substrate back to described bottom side form longlyer than setting.
The disclosed fin of the application, is that the fin that electric component has been installed is installed, and it has the installed surface that described substrate is installed, and is formed with partly groove in the part overlapping with described substrate back of described installed surface.
If adopt the disclosed fin of the application and ligthing paraphernalia, can discharge to fin from substrate with simple OILS STRUCTURE DEPRESSION.
Accompanying drawing explanation
Fig. 1 means the figure of the structure of ligthing paraphernalia 100.
Fig. 2 is the enlarged drawing of region Ra in Fig. 1.
Fig. 3 is the figure that arrow Xa direction is observed from Fig. 2.
Fig. 4 is the perspective view of fin.
Fig. 5 means the top view of fin lower surface.
Fig. 6 means C1-C1 section in Fig. 3 and the figure of C2-C2 section.
Fig. 7 is the figure that arrow Xb and arrow Xc direction are observed from Fig. 6.
Fig. 8 is the stereogram of ligthing paraphernalia 100, and Fig. 8 A is the stereogram of observing from top, and Fig. 8 B is the stereogram from beneath.
Description of reference numerals
100: ligthing paraphernalia, 1: light source portion, 11: light source body, 12: substrate, 12b: the back side, 12s: side, 12A: electrode, 12Ac: circuit, 12C: electrode, 12Cc: circuit, 13: light-emitting component, 2: main part, 21: fin, 21d: groove, 21iw: medial surface, 21ow: lateral surface, 21bw bottom side, 3: power supply unit, 31: supply unit, 4: fixator, Dx: creepage distance, Dy: space length, Dz: space length
The specific embodiment
First, the ligthing paraphernalia 100 of embodiment of the present utility model is briefly described.As an example, use the Down lamp (downlight) of imbedding a part and install in ceiling etc. as ligthing paraphernalia 100.
Fig. 1 means the figure of the structure of ligthing paraphernalia 100.In addition, the direction parallel with gravity direction is defined as to " above-below direction V ".The direction vertical with gravity direction is defined as to " horizontal direction H ".
Light source portion 1 possesses light source body 11.In the present embodiment, light source body 11 is on substrate 12 surfaces, to form the COB type light emitting module of light-emitting component 13.In addition, light source body 11 is not limited to COB type light emitting module, and the SMD(Surface mount device of LED chip (LED chip) is installed on substrate surface) type light emitting module etc., as long as at least possess light source, just do not limit its form.Light-emitting component 13 is LED(Light emitting diode).The light that light-emitting component 13 sends, by lampshade (shade) 14 refractions, is reflected plate (reflector) 15 reflections, thereby irradiates to any direction.In addition,, for the light source body 11 in the present embodiment, on substrate 12, be provided with two electrode 12A, 12C(with reference to Fig. 6, Fig. 7).Electrode 12A is anode, and (with reference to Fig. 7) is connected with light-emitting component 13 via circuit 12Ac.Electrode 12C is negative electrode, and (with reference to Fig. 7) is connected with light-emitting component 13 via circuit 12Cc.Electrode 12A, 12C and circuit 12Ac, 12Cc are disposed near the outer peripheral edges of substrate 12 of rectangle.Electrode 12A, 12C are disposed near the bight of subtend of substrate 12.But, for configuration of electric conductor etc., be not limited to this.In addition, in this manual, electrode 12A, 12C and circuit 12Ac, 12Cc are called to " electric conductor ".
Below the detailed structure of fin 21 is described.
Fig. 2 is the enlarged drawing of the region Ra in Fig. 1.Fig. 3 is the figure that the arrow Xa direction from Fig. 2 is observed.Fig. 4 is the perspective view of fin 21.Fig. 5 means the top view of fin 21 lower surfaces.
Installed surface 21A forms abreast with respect to horizontal direction H.Installed surface 21A is upper, and screw (not shown) arranges abreast with respect to above-below direction V.In addition, fixator 4, the upper position overlapping with screw is provided with through hole (not shown).Therefore, fixator 4 is fixed on installed surface 21A by the screw 4S via through hole.In addition,, in order to keep light source body 11, on fixator 4, match and formed recess 4d with the shape that forms the substrate 12 of this light source body 11.Therefore, light source body 11 is fixed on installed surface 21A under the state that embeds recess 4d.That is to say, under the state that light source body 11 contacts with installed surface 21A at least a portion of the back side of substrate 12 12b, be installed on fin 21(with reference to Fig. 6).
And then, on installed surface 21A, with the position that a part for substrate 12 overlaps, be formed with groove 21d, 21d.That is to say, on fin 21, with the part that a part of the back side 12b of substrate 12 overlaps, be formed with partly groove 21d, 21d.Like this, the ligthing paraphernalia 100 of the present embodiment, one of them is characterised in that, the part overlapping in a part of the back side 12b with substrate 12, part arranges groove 21d, 21d.Below, to describing based on the technique effect that groove 21d, 21d produce is set.In addition, two of the present embodiment groove 21d, 21d are independent mutually.
In addition, " part " refers to the part overlapping with substrate 12 of installed surface 21A.In the present embodiment, " part " refers to the position at least overlapping with electric conductor, but the part comprising a little beyond the electric conductor of substrate 12 is also passable.In addition, groove 21d is formed in the situation with the whole position overlapping of the periphery edge of light source body 11, compares with the structure of the present embodiment, substrate 12 narrows down with the contact area of fin 21, compare with the structure of the present embodiment, the thermal diffusivity of light source body 11 reduces.In the present embodiment, for when guaranteeing the high-cooling property of light source body 11, suppress the electric discharge from light source body 11 to fin 21, form partly groove 21d.
In the present embodiment, groove 21d, 21d imitate the shape of substrate 12 and form.Particularly, groove 21d, 21d, form shape while overlooking and form the shape identical and curved rectangular hook-shaped (with reference to Fig. 4, Fig. 5) with the substrate 12 of rectangle.In addition, groove 21d, 21d are formed on the position (with reference to Fig. 6, Fig. 7) overlapping with the electric conductor arranging on substrate 12.
Like this, under the state that light source body 11 contacts with installed surface 21A at the back side of substrate 12 12b, be installed on fin 21.In addition, on fin 21, with the part that a part of the back side 12b of substrate 12 overlaps, be formed with partly groove 21d, 21d.Thus, for this ligthing paraphernalia 100, can partly and between fin 21 space be set at the electric conductor that forms substrate 12, thereby can suppress to discharge to fin 21 from substrate 12.Particularly, while flowing through overcurrent in the electric conductor of substrate 12, can suppress to discharge to fin 21 from electric conductor.In addition, this ligthing paraphernalia 100, for not needing the structure of insulating trip, therefore can make the heat of light source body 11 effectively to fin 21, transmit.
The technological thought of the present embodiment is, at the electric conductor that forms substrate 12, partly and between fin 21 space is set, thereby suppresses to occur electric discharge this point to fin 21 from substrate 12.That is, the shape of groove 21d and position, as long as be at least shape and the position overlapping with the electric conductor of substrate 12, just can suppress to discharge to fin 21 from substrate 12.Therefore, the position of groove 21d, 21d and shape can, according to the appropriate changes such as configuration of electric conductor, be not limited to the form of the present embodiment.
In addition, in the present embodiment, one of its feature is to have formed partly groove 21d on substrate 12.Particularly, groove 21d is formed at the position at least overlapping with conductive part of substrate 12.By such structure, can between conductive part and fin, form space, thereby can suppress the electric discharge from conductive part to fin 21.In addition, the contact area between substrate 12 and fin 21 can be guaranteed as far as possible, thereby the thermal diffusivity of light source body 11 can be guaranteed.In addition, suppose, in the situation that groove 21d is formed at the whole position overlapping with the periphery edge of light source body 11, to compare with the structure of the present embodiment, the contact area between substrate 12 and fin 21 narrows down, compare with the structure of the present embodiment, the thermal diffusivity of light source body 11 reduces.If the thermal diffusivity of light source body 11 is low, while making light source body 11 light, the situation that the temperature that there will be light source body 11 self to produce reaches a high temperature.There is high temperature in light source body 11, light dies down, the lifetime of light-emitting component is, the possibility of light-emitting component breakage becomes large.In such structure, if want to guarantee thermal diffusivity, for example, can consider to clamp the structure of insulating trip (transmitting heat but the thin slice of insulation) between substrate 12 and fin 21, but may occur the shortcomings such as component count increases, cost rises, assembling increase in man-hour.On the other hand, in the present embodiment, owing to forming partly groove 21d, thereby can guarantee as far as possible the contact area between substrate 12 and fin 21, thereby can not use insulating trip and guarantee the thermal diffusivity of light source body 11.Therefore, the temperature that can suppress light source body 11 rises, thereby can suppress the lifetime that light that light-emitting component sends died down, suppressed light-emitting component, the breakage that suppresses light-emitting component.In addition, in the present embodiment, owing to forming partly groove 21d, therefore can suppress the electric discharge from light source body 11 to fin 21.
In addition, fin 21 is preferably: the structure that smoothing techniques has been passed through in the region at least contacting with substrate 12 (except groove 21d) of installed surface 21A.By being such structure, can make the back side of substrate 12 and the contact area of installed surface 21A become large, can make the heat that light source body 11 sends to fin 21, transmit efficiently.
Then, specifically specify the groove 21d in the present embodiment, the shape of 21d, and consequent technique effect is described.
Fig. 6 means C1-C1 section in Fig. 3 and the figure of C2-C2 section.Fig. 7 is the figure that arrow Xb from Fig. 6 and arrow Xc direction are observed.
As mentioned above, to form the shape while overlooking be identical and curved rectangular hook-shaped with the shape of the substrate 12 of rectangle for groove 21d, 21d.That is the region that, groove 21d, 21d are formed on installation base plate 12 part around.Therefore, the interior sidewall surface that forms groove 21d, 21d is defined as to " medial surface 21iw ", the outer side surface that forms groove 21d, 21d is defined as to " lateral surface 21ow ".In addition, medial surface 21iw and the crossing wall of lateral surface 21ow are defined as to " bottom side 21bw ".
In the present embodiment, medial surface 21iw is arranged on respect to the crossing position of substrate 12 that light source body 11 has been installed.That is to say, for groove 21d, 21d, the medial surface 21iw that forms this groove 21d, 21d forms than the face direction inner side of the more close installed surface 21A of side 12s of substrate 12.
By being such shape, substrate 12 is fixed on the position of a part of a part of covering groove 21d of portion, the 21d of this substrate 12.Explain, because the position overlapping with electric conductor at substrate 12 is formed with groove 21d, 21d, thereby substrate 12 is fixed on and is provided with the part covering groove 21d of portion of electric conductor, the position of 21d.
Like this, for groove 21d, 21d, the medial surface 21iw that forms this groove 21d, 21d forms than the face direction inner side of the more close installed surface 21A of side 12s of substrate 12.Thus, for this ligthing paraphernalia 100, can guarantee that electric conductor from being arranged at substrate 12 till the creepage distance Dx of medial surface 21iw, therefore can suppress to discharge to fin 21 from substrate 12.
In addition,, in this ligthing paraphernalia 100, groove 21d, 21d make electric conductor from being arranged at substrate 12 form longlyer than setting to the creepage distance Dx of medial surface 21iw." setting " can be determined according to the voltage that applies in lightning surge test.For example, when making to apply voltage and being 4kV, it is more than 4mm can making creepage distance Dx, and when making to apply voltage and being 6kV, it is more than 6mm can making creepage distance Dx.This is rendered as and applies the every increase of voltage 1kV, and creepage distance Dx increases the relation of 1mm, but this relation that applies voltage and creepage distance Dx is only an example.
In addition, in the present embodiment, lateral surface 21ow is arranged at disjoint position while overlooking with respect to the substrate 12 that light source body 11 is installed.That is to say, for groove 21d, 21d, the lateral surface 21ow that forms this groove 21d, 21d forms than the face direction outside of the more close installed surface 21A of side 12s of substrate 12.
By being such shape, substrate 12 is fixed on the region that a part is around formed with groove 21d, 21d.If explain, the shape due to groove 21d, 21d imitation substrate 12 forms, so substrate 12 is fixed on the inside region that a part is around formed with groove 21d, 21d.
Like this, for groove 21d, 21d, the lateral surface 21ow that forms this groove 21d, 21d forms than the face direction outside of the more close installed surface 21A of side 12s of substrate 12.Thus, this ligthing paraphernalia 100 can be guaranteed the space length Dy from the side 12s of substrate 12 to lateral surface 21ow, therefore can suppress to discharge to fin 21 from substrate 12.If explain, for this ligthing paraphernalia 100, due to the space length Dy that can guarantee from the side 12s of substrate 12 to the angle part being formed by installed surface 21A and lateral surface 21ow, therefore can suppress to discharge to fin 21 from substrate 12.
In addition,, in this ligthing paraphernalia 100, groove 21d, 21d make the angle part being formed by installed surface 21A and lateral surface 21ow to lateral surface 21ow(from the side 12s of substrate 12) space length Dy form longlyer than setting." setting " can be determined according to the voltage that applies in lightning surge test.For example, when making to apply voltage and being 4kV, it is more than 4mm can making space length Dy, and when making to apply voltage and being 6kV, it is more than 6mm can making space length Dy.This is rendered as and applies the every increase of voltage 1kV, and space length Dy increases the relation of 1mm, but this relation that applies voltage and space length Dy is only an example.
And then in the present embodiment, bottom side 21bw arranges abreast with respect to the substrate 12 that light source body 11 has been installed.That is to say, for groove 21d, 21d, the bottom side 21bw that forms this groove 21d, 21d is parallel and form with respect to the back side 12b of substrate 12.
By being such shape, substrate 12 is parallel and fixing with respect to the bottom side 21bw that forms groove 21d, 21d.Explain, because the back side 12b of substrate 12 flatly forms, so substrate 12 is fixing abreast with respect to the bottom side 21bw that forms groove 21d, 21d.
Like this, for groove 21d, 21d, the bottom side 21bw that forms this groove 21d, 21d is parallel and form with respect to the back side 12b of substrate 12.Thus, for this ligthing paraphernalia 100, because the back side 12b from substrate 12 is constant to the space length Dz of bottom side 21bw, therefore can suppress to discharge to fin 21 from substrate 12.If explain, for this ligthing paraphernalia 100, space length Dz from the back side 12b of substrate 12 to bottom side 21bw is constant and do not produce electric field and concentrate, and therefore can suppress to discharge to fin 21 from substrate 12.
In addition,, in this ligthing paraphernalia 100, groove 21d, 21d make the space length Dz from the back side 12b of substrate 12 to bottom side 21bw form longlyer than setting." setting " can be determined according to the voltage that applies in lightning surge test.For example, when making to apply voltage and being 4kV, it is more than 4mm can making space length Dz, and when making to apply voltage and being 6kV, it is more than 6mm can making space length Dz.This is rendered as and applies the relation that the every increase of voltage 1kV space length Dz increases 1mm, but this relation that applies voltage and space length Dz is only an example.
Then, other features of this ligthing paraphernalia 100 are described.
As mentioned above, this ligthing paraphernalia 100 be take the part overlapping at the back side 12b with substrate 12 and is provided with partly groove 21d, 21d as feature.Its object is to suppress to discharge to fin 21 from substrate 12.So substrate 12 is with respect to relative position, the relative angle of groove 21d, 21d, the installation site of light source body 11, setting angle become important.Therefore, this ligthing paraphernalia 100 can arrange a plurality of protruding 21P(with reference to Fig. 3, Fig. 4, Fig. 5 on installed surface 21A), can be with the position of regulation and the angle fixing holder 4 of regulation.
In this ligthing paraphernalia 100, protruding 21P arranges in the mode of the profile of the fixator 4 of the angle installation of the position along with regulation and regulation.Therefore,, if fixator 4 is fixing contiguously with whole protruding 21P, the inevitable position with regulation and the angle of regulation are mounted.But, configuration, the shape for protruding 21P do not limit.
In addition, the present embodiment is to being illustrated for the fin of ligthing paraphernalia, but purposes is not limited to ligthing paraphernalia.Fin of the present utility model, as long as the substrate that electric component has at least been installed can be installed, the thermal transpiration that can make electric component or substrate produce is just passable.
Claims (8)
1. a ligthing paraphernalia, is to possess at substrate surface to have the light source body of light-emitting component and make the ligthing paraphernalia of fin of the thermal transpiration of described light source body, it is characterized in that,
Described light source body is installed on described fin under the state contacting with the back side of described substrate, and the part overlapping on described fin, with described substrate back is formed with groove partly.
2. ligthing paraphernalia according to claim 1, is characterized in that,
For described groove, the medial surface that forms this groove forms more in the inner part than described substrate side surfaces.
3. ligthing paraphernalia according to claim 2, is characterized in that,
Described groove makes electric conductor from being arranged at described substrate form longlyer than setting to the creepage distance of described medial surface.
4. ligthing paraphernalia according to claim 1, is characterized in that,
For described groove, the lateral surface that forms this groove forms more in the outer part than the side of described substrate.
5. ligthing paraphernalia according to claim 4, is characterized in that,
Described groove makes the space length from described substrate side surfaces to described lateral surface form longlyer than setting.
6. ligthing paraphernalia according to claim 1, is characterized in that,
For described groove, the bottom side that forms this groove is parallel with described substrate back and form.
7. ligthing paraphernalia according to claim 6, is characterized in that,
Described groove makes from described substrate back till the space length of described bottom side forms longlyer than setting.
8. a fin, is the fin that the substrate that electric component has been installed is installed, it is characterized in that,
There is the installed surface that described substrate is installed,
The part overlapping with described substrate back at described installed surface is formed with groove partly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623775.5U CN203586139U (en) | 2013-10-10 | 2013-10-10 | Cooling fin and lighting device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623775.5U CN203586139U (en) | 2013-10-10 | 2013-10-10 | Cooling fin and lighting device with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203586139U true CN203586139U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320623775.5U Expired - Fee Related CN203586139U (en) | 2013-10-10 | 2013-10-10 | Cooling fin and lighting device with same |
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| Country | Link |
|---|---|
| CN (1) | CN203586139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019200870A (en) * | 2018-05-15 | 2019-11-21 | 三菱電機株式会社 | Heat sink and illuminating device |
-
2013
- 2013-10-10 CN CN201320623775.5U patent/CN203586139U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019200870A (en) * | 2018-05-15 | 2019-11-21 | 三菱電機株式会社 | Heat sink and illuminating device |
| JP7466265B2 (en) | 2018-05-15 | 2024-04-12 | 三菱電機株式会社 | Heat sink and lighting device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20201010 |