CN104154460A - Light-emitting device and illuminating device comprising same - Google Patents
Light-emitting device and illuminating device comprising same Download PDFInfo
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- CN104154460A CN104154460A CN201310176728.5A CN201310176728A CN104154460A CN 104154460 A CN104154460 A CN 104154460A CN 201310176728 A CN201310176728 A CN 201310176728A CN 104154460 A CN104154460 A CN 104154460A
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Abstract
The invention relates to a light-emitting device comprising a light-emitting unit and at least one heat-dissipating unit. The light-emitting unit comprises a shell and a light-emitting module arranged in the shell, wherein a part of the shell conducts heat. The light-emitting device is characterized in that the heat-dissipating unit comprises a heat transferring part and at least one cooling part, wherein the heat transferring part makes contact with the shell, and the cooling part at least receives heat transferred from the heat transferring part and dissipates the heat. The invention further relates to an illuminating device comprising the light-emitting device.
Description
Technical field
The present invention relates to a kind of light-emitting device and comprise the lighting device of this light-emitting device.
Background technology
In modern lighting engineering, electronic installation, the relevant lighting device that particularly relates to lighting engineering are applied more and more widely, wherein, LED lighting engineering is widely used in lighting device, has used the lighting device of this technology to have good illumination effect, energy-conservation and illumination efficiency advantages of higher.Along with the popularity rate of such lighting device is more and more higher, the mechanical performance of the lighting device of user to such and heat conductivility have proposed more and more higher requirement.In addition,, along with fast development and the extensive use of LED chip technology, the requirement of the heat radiation to LED chip is also more and more higher.In order to meet the height heat radiation requirement of the heat abstractor to being provided for LED chip, the heat abstractor of being made up of thermal conductance metal material or thermal conductance plastic material is invented and is widely used.Wherein, for example; LED technology is widely used in street lamp field; and conventionally can produce so a large amount of heats when the work of the street lamp of design; so need to there is the heat abstractor of powerful heat sinking function; so not only make the lighting device of street lamp can be more heavy, but also can be because this extra design bring higher cost cost.
A solution of the prior art proposes, use the heat abstractor being made by Sheet Metal Forming Technology or expressing technique, this kind of heat abstractor can adopt metal or plastic material to make, and can advantageously be arranged on and adopt on the lighting device that COB technology assembles.But use the lighting device of described heat abstractor still to there is on the one hand the shortcoming that deadweight is larger.On the other hand, this heat abstractor, the especially heat abstractor manufactured by Sheet Metal Forming Technology, have high thermal conductance impedance, therefore this heat abstractor, for lighting device, particularly still has further improved space aspect the radiating effect of lighting device.
Another solution of the prior art proposes, form the heat abstractor of lighting device with heat pipe, this kind of heat abstractor is because the design of heat pipe can be used larger housing, so aspect quality, use the lighting device of this kind of heat abstractor not reduce a lot, in addition, as the design of other traditional heat abstractors, because designed housing can affect the whole circulation of air effect of lighting device, even so increased extra fin, therefore the radiating effect of lighting device can't improve.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of novel light-emitting device.This light-emitting device through flexibly design, to light-emitting device itself with comprise that the lighting device of this light-emitting device provides the mode of reliable and high efficiency heat radiation.In addition, because adopted the design of new space structure, this light-emitting device not only has advantages of lighter weight, particularly there is lighter heavy burden in the load-bearing region of luminescence unit, also can effectively dispel the heat with the form of radiation or convection current with external environment, for example ambient air, and the heat-sink unit of light-emitting device can compatible multiple different luminescence unit design, make this kind of design adapt to different applied environments.
A kind of light-emitting device is proposed according to the present invention, this light-emitting device comprises luminescence unit and at least one heat-sink unit, wherein said luminescence unit comprises the housing of part heat conduction and is contained in the luminescence component in described housing, it is characterized in that, described heat-sink unit comprises heat transfer part and at least one cooling segment, wherein at least described heat transfer part contacts with described housing heat conduction, and described cooling segment at least receives the heat of transmitting from described heat transfer part and dispels the heat.By heat transfer part and cooling segment are engaged, the object that can realize is, the heat mainly by heat transfer part, luminescence unit being produced transmits efficiently, and by cooling segment, the heat receiving is carried out to favourable heat radiation, can guarantee that thus light-emitting device meets higher cooling requirement in running.Simultaneously this design abandoned directly by cooling segment together with housing design to carry out the design of contact heat radiation, make thus housing without the larger cooling segment of carrying deadweight.
In a preferred design according to the present invention, multiple described cooling segments arrange in pairs, and described heat transfer part contacts with described housing heat conduction, and described cooling segment is positioned at both sides, described heat transfer part.Multiple cooling segments can absorb heat from housing at diverse location, and to different direction distribute heats, improve the radiating effect of cooling segment.The design of this symmetry is also conducive to manufacture and the assembling of light-emitting device.
Preferably, described heat transfer part contacts with a side heat conduction of the bright dipping side away from described luminescence unit of described housing, and described cooling segment is positioned at respectively the both sides of described housing in the direction transverse to light direction.In different region in the cooling segment that is co-located at light-emitting device backlight side can being arranged in to same plane from heat transfer part like this, avoid cooling segment and heat transfer part to be vertically stacked on the design on housing, reduced thus the thickness of light-emitting device.
Preferably, described cooling segment comprises the local contact area of the side direction contacting with described housing heat conduction.By so direct contact, the heat that is passed to housing from luminescence unit can distribute through this part contact area.
Preferably, described cooling segment on transverse to light direction with respect to the unsettled setting of described housing.This unsettled design can realize the possibility of the interactive convection current between heat abstractor and surrounding air.In addition, can for example support cooling segment in housing both sides by means of other support components of light-emitting device, avoid thus increasing housing load.
Preferably, described heat transfer part comprises heat-conducting part section and from the extended connecting portion section in described heat-conducting part section two ends, described heat-conducting part section contacts with described housing heat conduction, and two described connecting portion sections contact with the described cooling segment heat conduction of attaching troops to a unit respectively.Like this, form the simple mechanical connection of heat transfer part and cooling segment, and formed the transmission path of heat.
Preferably, described heat transfer part is heat pipe.Heat pipe, as simply and effectively design, provides the effect that heat is transferred to different place and region to this light-emitting device.
Preferably, described cooling segment is radiation fin array.The cooling segment that is designed to radiation fin array can be realized the radiating mode of radial pattern, and has formed effective heat radiation approach.
Preferably, described housing limits closed cavity.This housing, as the cavity that holds luminescence unit, can effectively be realized luminescence unit is carried out to technical grade protection.
Preferably, described housing comprises the base of heat conduction and the cover body of printing opacity, and described base and described cover body limit described cavity jointly.The base of housing and cover body can form the protection to holding luminescence unit wherein after engaging.
Preferably, described cover body is lens.Luminescence unit is covered by cover body, and cover body is as optical unit, and the light that luminescence unit is launched exhales through described cover body.
Preferably, the quantity of described heat-sink unit is multiple, heat-sink unit arrangement in a row described in each.The heat-sink unit of multiple arrangement in a rows provides the heat radiation approach of different directions and diverse location to light-emitting device.Multiple heat-sink units can be arranged according to different application conditions along the horizontal or longitudinal direction of housing, to improve radiating effect.
Preferably, described heat-sink unit is at the direction arrangement in a row extending longitudinally of described luminescence unit.The heat-sink unit arranging like this can form specific heat dissipation region, forms in other words the heat sinking array being for example arranged in parallel with each other, thereby for light-emitting device provides in specific region, and be the effect of carrying out heat radiation by specific direction.
Preferably, described light-emitting device also comprises the framework that described luminescence unit and described heat-sink unit are installed together.By framework, luminescence unit and heat-sink unit are fixedly installed in light-emitting device.
Preferably, described framework comprises upper frame and underframe, and described upper frame and described underframe clamp described luminescence unit and described heat-sink unit from heat radiation side and the bright dipping side of described light-emitting device respectively.Framework is fixed together luminescence unit and heat-sink unit, and has realized firmly mechanical connection.
Preferably, described upper frame and described underframe comprise respectively at least one louvre of attaching troops to a unit in described at least one cooling segment.The heat that light-emitting device can be produced by means of louvre be discharged light-emitting device outside by cooling segment, guarantees that thus the current path of light-emitting device between inside and outside is lasting unimpeded.
Preferably, described luminescence component comprises circuit board and be arranged at least one LED chip on described circuit board, and wherein said circuit board is fixed in a side of described housing energy heat conduction.Luminescence component can be by the housing parts of heat conduction, the heat of generation is passed to after housing in air again or heat transfer part passes.
Second object of the present invention realizes by so a kind of lighting device, and described lighting device comprises according to above-described at least one light-emitting device.This lighting device can utilize novel light-emitting device to reach effective heat radiation object, and can be suitable for being applied to various illumination apparatus and have the environment of volume requirement.
Preferably, described lighting device is outdoor illumination.This kind of lighting device can meet the various requirement of outdoor lighting, and has good radiating effect.
Preferably, described lighting device is street lamp.Be applied to the lighting device of street lamp, because its weight saving, it is more reasonable that device volume distributes, so effect is better.
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 shows according to the exploded view of light-emitting device of the present invention embodiment;
Fig. 2 shows according to the schematic diagram of single heat-sink unit of the present invention embodiment;
Fig. 3 shows according to the schematic diagram of lighting device of the present invention embodiment.
Detailed description of the invention
Fig. 1 shows according to the exploded view of light-emitting device 10 of the present invention embodiment.In the present embodiment, this light-emitting device 10 comprises luminescence unit 1, heat-sink unit 2 and the framework 6 for holding them and be fixed together.Luminescence unit 1 and heat-sink unit 2 such as, integrate with the mechanical connection manner, the connection of the form fit such as snap fit or embedding that are applicable to by framework 6, can be arranged on simply and easily in light-emitting device 10 thus, and be fixed and maintain.According to the present invention, described luminescence unit 1 also has housing 3 and luminescence component 4, housing 3 comprise in figure, be positioned at top can heat conduction base 3.1 and be positioned at the cover body with translucent effect 3.2 of below.Cover body 3.2 can be designed to have the lens of optical characteristics; and together form cavity with base 3.1; luminescence component 4 is housed inside in this cavity by housing 3; and protected by housing 3; can reach so good technical grade protection; for example form the measures such as waterproof and dustproof, to ensure the stable working environment of luminescence component 4.
Proposing especially according to the present invention, can be one or more for the quantity of the heat-sink unit 2 of luminescence unit 1, and in the present embodiment, light-emitting device 10 has five heat-sink units 2.The heat-sink unit 2 that structure is identical comprises respectively heat transfer part 2.1 and a pair of cooling segment 2.2, wherein heat transfer part 2.1 contacts with housing 3 heat conduction with right side from the left side shown in figure respectively, and cooling segment 2.2 at least receives the heat of transmitting from heat transfer part 2.1 and dispels the heat.
In a unshowned embodiment, cooling segment also can only design the side at housing according to design and application situation.
Luminescence component 4 can be designed to have one or more LED chips 4.2 and for being electrically connected and fixing the circuit board 4.1 of described chip 4.2, LED chip 4.2 can carry chip technology (COB) according to plate and be arranged on circuit board, and be to install by some specific arrangement mode, realize reliably electrical connection, can realize like this linearity or to other forms of wide range lighting effect.The part of this housing 3 can be designed to heat conduction, and heat-sink unit 2, in the time being designed to be connected with described housing 3 heat conduction contacts, can reaching direct absorption heat and transmit until the object of distribute heat like this.
As shown in Figure 1, the arrangement that the heat-sink unit 2 that this light-emitting device 10 has can be embarked on journey along the longitudinal direction of luminescence unit 1, thus can form the heat-dissipating structure that can cover luminescence unit 1 longitudinal direction, single heat-sink unit 2 will be described in more detail below.As can be seen from Figure 1, formed by upper frame 6.1 and underframe 6.2 for framework 6 fixing and support cooling segment 2.2.On upper frame 6.1 and underframe 6.2, be also provided with multiple louvres 7, heat-sink unit 2 from luminescence unit 1 absorbs heat can through this louvre 7 by dissipation of heat to air.In addition, in the present embodiment, be opened in louvre on upper frame 6.1 and underframe 6.2 7 preferably mutually corresponding with cooling segment 2.2 respectively, for example every group of louvre 7 being opened on upper frame 6.1 and underframe 6.2 can limit the installing space that holds a corresponding cooling segment 2.2.Like this, in vertical direction, the louvre 7 that cold air can flow through paired setting enters lighting device 20 smoothly and in large quantities, forms convection current with the cooling segment 2.2 that is arranged on the heat radiation type in heat-sink unit 2.Based on this design, can significantly improve the radiating effect of heat-sink unit 2, and obtain larger area of dissipation.
Next structure and the effect of single heat-sink unit 2 will be introduced in detail according to Fig. 2.Fig. 2 shows according to the schematic diagram of single heat-sink unit of the present invention embodiment.As shown in Figure 2, single heat-sink unit 2 comprises heat transfer part 2.1 and is arranged on symmetrically a pair of cooling segment 2.2 of 2.1 both sides, heat transfer part.Cooling segment 2.2 can be designed as local thermal conductivity region near the side of heat transfer part 2.1, contacts under certain condition with the side zones heat conduction of housing 3.In addition, the Main Function of cooling segment 2.2 is at least to receive the heat of transmitting from heat transfer part 2.1, to dispel the heat as the main radiator portion of heat-sink unit 2.Heat transfer part 2.1 is designed to have heat-conducting part section 2.11 and connecting portion section 2.12, heat-conducting part section 2.11 is carried out heat conduction by connecting portion section 2.12 with cooling segment 2.2 and is contacted, the heat absorbing from luminescence unit 1 through heat-conducting part section 2.11 like this, can be passed to cooling segment 2.2 through connecting portion section 2.12.
Concrete, this heat-conducting part section 2.11 and/or connecting portion section 2.12 can be designed to heat pipe, heat pipe can be designed to be made up of metal or plastic material, heat pipe can be in contacting with housing 3 heat conduction and absorbing heat like this, cooling segment 2.2 transferring heats to design at heat pipe two ends, realize heat radiation.As shown in Figure 2, this cooling segment 2.2 has heat radiating fin structure, like this can be by thermal radiation effect, engage air and form convection current, to strengthen the effect of heat radiation, in addition, this heat radiating fin structure is so design preferably, is respectively arranged with heat radiating fin structure at the two ends of heat transfer part 2.1, certainly, according to applied environment or real needs, can only in wherein one end of heat transfer part 2.1, cooling segment 2.2 be set.By the two ends at heat pipe, heat radiating fin structure is set respectively, can be by heat-sink unit 2 from being set directly at the traditional design at the back side of luminescence unit 1, change into the side or the many sides place that are arranged on luminescence unit 1, like this, form a kind of flat design effect, reduced in vertical direction the thickness of lighting device 20, luminescence unit 1 is just without the directly deadweight of carrying heat-sink unit 2, but by being designed to upper frame 6.1 and underframe 6.2(referring to Fig. 1) the weight of framework carrying heat-sink unit 2, to avoid as far as possible, due to the overweight injury causing of heat-sink unit 2.Because heat pipe and housing 3 are made by Heat Conduction Material, therefore can be by mechanical connection manner heat conduction contact each other.Example as shown in FIG., can make heat pipe and housing 3 compress and be fixed together by the bolt shown in figure or analog, or realizes by welding.In addition being connected between heat pipe and fin can realize by riveted or welding.
By the single heat-sink unit 2 of such design, itself just can be formed as single module capable of being combined, like this by the permutation and combination of one or more modules, and such combination is arranged on housing 3, just can realize, according to the operating power size of lighting device 20 or the difference of concrete applied environment, change the quantity of heat-sink unit 2, for example 4 or 8, to reach the effect of effectively and targetedly dispelling the heat.
Fig. 3 shows according to the schematic diagram of lighting device 20 of the present invention embodiment.As shown in Figure 3, lighting device 20 according to an embodiment of the invention comprises luminescence unit 1 and heat-sink unit 2.Luminescence unit 1 and heat-sink unit 2 be by being arranged on the framework carried in lighting device 20, and be mounted fixingly, forms and have the stable light-emitting device 10 connecting.The light-emitting device 10 of such design as shown in the figure has the spatial distribution through effective design, and has in vertical direction less volume.Like this, this kind of lighting device 20 can be designed to street lamp, and be arranged on outdoor road pavement or throw light on towards specific direction, because the connection performance that it is inner good, luminescence unit needn't carry too much heavy burden, so in the case of the gross mass of lighting device 20 reduces, can avoid as much as possible because injury overweight and that cause.
Reference number
1 luminescence unit
2 heat-sink units
2.1 heat transfer part
2.11 heat-conducting part section
2.12 connecting portion section
2.2 cooling segment
3 housings
3.1 base
3.2 cover body
4 luminescence components
4.1 circuit board
4.2 LED chip
6 frameworks
6.1 upper frame
6.2 underframe
7 louvres
10 light-emitting devices
20 lighting devices.
Claims (20)
1. a light-emitting device (10), comprise luminescence unit (1) and at least one heat-sink unit (2), wherein said luminescence unit (1) comprises the housing (3) of part heat conduction and is contained in the luminescence component (4) in described housing (3), it is characterized in that, described heat-sink unit (2) comprises heat transfer part (2.1) and at least one cooling segment (2.2), wherein at least described heat transfer part (2.1) contacts with described housing (3) heat conduction, and described cooling segment (2.2) at least receives the heat of transmitting from described heat transfer part (2.1) and dispels the heat.
2. light-emitting device according to claim 1 (10), it is characterized in that, multiple described cooling segments (2.2) arrange in pairs, and described heat transfer part (2.1) contact with described housing (3) heat conduction, and described cooling segment (2.2) is positioned at both sides, described heat transfer part (2.1).
3. light-emitting device according to claim 2 (10), it is characterized in that, described heat transfer part (2.1) contacts with a side heat conduction of the bright dipping side away from described luminescence unit (1) of described housing (3), and described cooling segment (2.2) is positioned at respectively the both sides of described housing (3) in the direction transverse to light direction.
4. light-emitting device according to claim 3 (10), is characterized in that, described cooling segment (2.2) comprises the local contact area of the side direction contacting with described housing (3) heat conduction.
5. light-emitting device according to claim 3 (10), is characterized in that, described cooling segment (2.2) on transverse to described light direction with respect to the unsettled setting of described housing (3).
6. according to the light-emitting device (10) described in any one in claim 2-5, it is characterized in that, described heat transfer part (2.1) comprises heat-conducting part section (2.11) and from described heat-conducting part section (2.11) the extended connecting portion sections in two ends (2.12), described heat-conducting part section (2.11) contacts with described housing (3) heat conduction, and two described connecting portion sections (2.12) contact with described cooling segment (2.2) heat conduction of attaching troops to a unit respectively.
7. according to the light-emitting device (10) described in any one in claim 1-5, it is characterized in that, described heat transfer part (2.1) are heat pipes.
8. according to the light-emitting device (10) described in any one in claim 1-5, it is characterized in that, described cooling segment (2.2) is radiation fin array.
9. according to the light-emitting device (10) described in any one in claim 1-5, it is characterized in that, described housing (3) limits closed cavity.
10. light-emitting device according to claim 9 (10), is characterized in that, described housing (3) comprises the base (3.1) of heat conduction and the cover body (3.2) of printing opacity, and described base (3.1) and described cover body (3.2) limit described cavity jointly.
11. light-emitting devices according to claim 10 (10), is characterized in that, described cover body (3.2) is lens.
12. according to the light-emitting device (10) described in any one in claim 1-5, it is characterized in that, the quantity of described heat-sink unit (2) is multiple, heat-sink unit described in each (2) arrangement in a row.
13. light-emitting devices according to claim 12 (10), is characterized in that, described heat-sink unit (2) is at the direction arrangement in a row extending longitudinally of described luminescence unit (1).
14. according to the light-emitting device (10) described in any one in claim 1-5, it is characterized in that, described light-emitting device (10) also comprises the framework (6) that described luminescence unit (1) and described heat-sink unit (2) are installed together.
15. light-emitting devices according to claim 14 (10), it is characterized in that, described framework (6) comprises upper frame (6.1) and underframe (6.2), and described upper frame (6.1) and described underframe (6.2) clamp described luminescence unit (1) and described heat-sink unit (2) from heat radiation side and the bright dipping side of described light-emitting device (10) respectively.
16. light-emitting devices according to claim 15 (10), is characterized in that, described upper frame (6.1) and described underframe (6.2) comprise respectively at least one louvre (7) of attaching troops to a unit in described at least one cooling segment (2.2).
17. according to the light-emitting device (10) described in any one in claim 1-5, it is characterized in that, described luminescence component (4) comprises circuit board (4.1) and is arranged at least one LED chip (4.2) on described circuit board (4.1), wherein said circuit board (4.1) be fixed on described housing (3) can a side of heat conduction on.
18. 1 kinds of lighting devices (20), is characterized in that, comprise according at least one light-emitting device (10) described in any one in claim 1-17.
19. lighting devices according to claim 18 (20), is characterized in that, described lighting device (20) is outdoor illumination.
20. lighting devices according to claim 19 (20), is characterized in that, described lighting device (20) is street lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310176728.5A CN104154460A (en) | 2013-05-14 | 2013-05-14 | Light-emitting device and illuminating device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310176728.5A CN104154460A (en) | 2013-05-14 | 2013-05-14 | Light-emitting device and illuminating device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104154460A true CN104154460A (en) | 2014-11-19 |
Family
ID=51880031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310176728.5A Pending CN104154460A (en) | 2013-05-14 | 2013-05-14 | Light-emitting device and illuminating device comprising same |
Country Status (1)
| Country | Link |
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| CN (1) | CN104154460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671644A (en) * | 2019-10-09 | 2020-01-10 | 杭州清泉品牌管理有限公司 | Novel street lamp fin cleaning device utilizing renewable energy |
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| CN110671644A (en) * | 2019-10-09 | 2020-01-10 | 杭州清泉品牌管理有限公司 | Novel street lamp fin cleaning device utilizing renewable energy |
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