CN203500963U - LED spotlight - Google Patents
LED spotlight Download PDFInfo
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- CN203500963U CN203500963U CN201320591781.7U CN201320591781U CN203500963U CN 203500963 U CN203500963 U CN 203500963U CN 201320591781 U CN201320591781 U CN 201320591781U CN 203500963 U CN203500963 U CN 203500963U
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- Prior art keywords
- radiator
- reflector
- light
- led
- led lamp
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Abstract
The utility model relates to an LED spotlight. The LED spotlight comprises a lamp holder, inside of which is provided with a power supply; an LED lamp panel provided with an integrally packaged LED lamp bead and electrically connected with the power supply; a reflection element used for adjusting angles of light emitted by the LED lamp bead; and a radiator installed at one end of the lamp holder and provided with an openmouthed cavity. The LED lamp panel and the reflection element are disposed in the cavity; a wall of the radiator comprises a core body and a radiating layer wrapped on the surface of the core body, and the core body is prepared by metal or metal alloy; and an external surface of the radiator is provided with a plurality of outer radiating fins, which are arranged with intervals, outwardly extending along the radial direction of the radiator, and an interior surface of the radiator is provided with a plurality of inner radiating fins, which are arranged with intervals, inwardly extending along the radial direction of the radiator. The utility model is designed to provide the LED spotlight with good heat dissipation capability and relatively low light loss.
Description
Technical field
the utility model relates to a kind of LED shot-light.
Background technology
shot-light is due to the illumination mode that adopts solid luminescent diode as light source, and its life-span depends primarily on solid LED light source heat dissipating layer and divides.LED shot-light is when work, the electric energy conversion that has 80% left and right has become heat energy, the electric energy conversion of 20% left and right is luminous energy, because LED chip is in when work, the junction temperature of itself (Tj) and the light emission rate relation that is inversely proportional to, temperature is higher, light emission rate is lower, light loss is also just larger, and when LED chip reaches its maximum operation (service) temperature, LED chip even can break down.LED junction temperature has direct relation to the life-span of LED, light decay, colour temperature skew.Therefore, the design and fabrication of radiator has great importance in LED shot-light, and the performance of radiator will directly affect all many-sides such as the body luminous flux, security, service life of LED shot-light.
the heat radiation of shot-light divides again passive heat radiation and active heat removal.Passive heat radiation refers to and relies on the thermal conductivity of its LED shot-light member itself and thermal diffusivity and member efficiently radiates heat face and shape heat is conducted and distribute, as the heat dissipating layer part that coefficient of heat transfer is higher is set; Active heat removal refers to that the radiating element that relies on fan, refrigeration wafer etc. need to consume electric energy dispels the heat.Take MR16 shot-light as example, in the mode that adopts passive heat radiation, under internationally accepted standard size, can accept Tj lower than under 90 degree Celsius, the luminous flux of its LED shot-light is almost difficult to surpass 500 lumens, under this passive heat dissipation design, LED components and parts generally reach 10～25% through the luminous flux proportion of goods damageds of reflector or lens, only have and adopt the mode of active heat removal just likely to make the luminous flux of the light that LED shot-light sends approach 500 lumens.But adopt the mode of active heat removal, because increasing the radiating element that is used as heat radiation purposes, go out to increase outside cost, also increased device failure probability, cause shot-light service life to reduce, and radiating element also can power consumption cause light transmittance efficiency to reduce, this mode is also because the parts of LED shot-light are more, inconvenience is installed.
Utility model content
for the problems referred to above, the purpose of this utility model is to provide a kind of LED shot-light, and its heat-sinking capability is good, light loss is less.
for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
a LED shot-light, it comprises:
lamp socket, its inside is provided with power supply;
lED lamp plate, is provided with the LED lamp pearl of integration packaging and is electrically connected mutually with described power supply on it;
reflecting element, it is for the angle of the light adjusting described LED lamp pearl and send;
radiator, it is arranged on one end of described lamp socket, described radiator has a uncovered cavity and the wall that surrounds this cavity, described LED lamp plate, reflecting element are arranged in described cavity, the heat dissipating layer that the wall of described radiator comprises core body and is coated on described core surface, described core body is made by metal or metal alloy, on the outer surface of described radiator, along radiator, extend radially outwardly and be formed with a plurality of spaced outer fin, on the inner surface of described radiator, along radiator, extend radially inwardly and be formed with a plurality of spaced interior fin.
preferably, described heat dissipating layer is made by heat-conducting plastic, and heat-conducting plastic comprises plastic substrate and the inorganic filler of the following micron to nano grade size dispersion in plastic substrate.
preferably, described heat dissipating layer is made by heat conduction paint.
preferably, the thickness of described heat dissipating layer is 10 microns to 5 millimeters.
preferably, one or more in aluminum or aluminum alloy, copper or copper alloy, magnesium alloy of described core body are made.
in some specific embodiment, described reflecting element is reflector, described reflector has reflective inner surface, the reflection opening being formed by described reflective inner surface edge, at described reflection opening part, extend radially outward the annular turn-up portion of formation and the through hole forming in described reflector bottom, described turn-up portion is installed on radiator and reflector is positioned at the cavity of radiator at least partly, the corresponding described through hole setting of described LED lamp plate so that the light that LED lamp pearl sends through the reflective inner surface of described reflector, reflect away, in described turn-up portion along offering a plurality of spaced holes on its circumferencial direction, the space forming between corresponding two the adjacent interior fin in described hole and reflector arranges so that the air-flow in described cavity is connected with the external world.
in some specific embodiment, described reflecting element is lens, and described lens are arranged in the cavity of described radiator and cover described LED lamp pearl.
at some preferably in embodiment, described reflecting element comprises reflector and lens, described reflector has reflective inner surface, the reflection opening being formed by described reflective inner surface edge, at described reflection opening part, extend radially outward the annular turn-up portion of formation and the through hole forming in described reflector bottom, described turn-up portion is installed on radiator and reflector is positioned at the cavity of radiator at least partly, described lens are arranged on reflection opening part, described LED lamp plate is arranged near the through hole of described reflector bottom so that the direct transmission of upper surface of the light part scioptics that described LED lamp pearl sends is gone out, part scioptics side refracts to shot-light inside and via reflector, is reflected back lens again, in described turn-up portion along offering a plurality of spaced holes on its circumferencial direction, the space forming between corresponding two the adjacent interior fin in described hole and reflector arranges so that the air-flow in described cavity is connected with the external world.
more preferably, described reflector is made by high reflected P C.
more preferably, described reflector is made of metal.
the utility model adopts above structure, and tool has the following advantages:
1, radiator is by be coated with the better heat conduction paint of one deck heat dispersion or composite plastic at metal or metal alloy core body, combine the advantage of the two, good rigidity and the intensity both with metal, there is again heat dispersion and heat conductivility that heat conduction paint or composite plastic are good, the heat-sinking capability that has effectively improved LED shot-light, effectively reduces light loss;
2, fin is all set on the inside and outside wall of radiator, fin is only externally set compared to existing technology, area of dissipation is larger, and the air of radiator inside is also circulated, can better the LED shot-light inner product torrid zone be gone out and be distributed to extraneous air, radiating efficiency is higher, effectively reduces light decay.
Accompanying drawing explanation
accompanying drawing 1 is decomposing schematic representation of the present utility model;
accompanying drawing 2 is top view of the present utility model;
accompanying drawing 3 is cutaway view vertically in accompanying drawing 2;
the structural representation that accompanying drawing 4 is radiator of the present utility model;
accompanying drawing 5 is the decomposing schematic representation of lens of the present utility model, reflector, LED lamp plate and radiator;
accompanying drawing 6 is light transmission of the present utility model and refraction schematic diagram.
in above accompanying drawing: 1, lamp socket; 11, power supply; 2, radiator; 21, core body; 22, heat dissipating layer; 23, outer fin; 24, interior fin; 3, LED lamp plate; 4, reflector; 41, through hole; 42, reflective inner surface; 43, reflection opening; 44, turn-up portion; 441, hole; 5, lens.
The specific embodiment
below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be those skilled in the art will recognize that, protection domain of the present utility model is made to more explicit defining.
shown in accompanying drawing 1-6, a kind of LED shot-light, it comprises:
reflecting element, it is for the angle of the light adjusting described LED lamp pearl and send;
described reflecting element comprises reflector 4 and lens 5, described reflector 4 has reflective inner surface 42, the reflection opening 43 being formed by described reflective inner surface 42 edges, at described reflection opening 43 places, extend radially outward the annular turn-up portion 44 of formation and the through hole 41 forming in described reflector 4 bottoms, described turn-up portion 44 is installed on radiator 2 and reflector 4 is positioned at the cavity of radiator 2 at least partly, described lens 5 are arranged on reflection opening 43 places, described LED lamp plate 3 is arranged on to be sentenced near the through hole 41 of described reflector bottom the light that described LED lamp pearl is sent and goes out via the internal surface reflection of lens 5 and reflector 4, in described turn-up portion 44 along offering a plurality of spaced holes 441 on its circumferencial direction, the space setting forming between corresponding two the adjacent interior fin 24 in described hole 441 and reflector 4 so that the air-flow in described cavity be connected with the external world.The surface texture of reflector 4 is time micron to nano grade micro-structural.
in the light that described LED lamp pearl sends, the direct transmission of upper surface of most of scioptics 5 goes out, has little a part of light (being about 15%) to refract on the reflector 4 of shot-light inside scioptics side, and the light of this fraction reflexes in lens 5 again via the reflective inner surface of reflector 4.In prior art, only use lens, have 15～20% light loss.Comparatively speaking, the application is reclaimed lens 5 to be reflected back lens 5 again to 15～20% light of side refraction by reflector 4, reduces light loss, and global design can be down to loss below 10%, is even low to moderate 5%.
the utility model has reduced and in prior art, only has reflector or only have the light loss outside the LED light source irradiating angle that lens cause, has utilized fully LED light source, has improved optical efficiency; Also really solved the problem that human eye directly touches LED light outside design irradiating angle, the injury of having avoided high light that LED sends may cause human eye, and the dazzling and sense of discomfort causing thus simultaneously.
described heat dissipating layer 2 is made by heat-conducting plastic or heat conduction paint, and heat-conducting plastic comprises plastic substrate and the inorganic filler of the following micron to nano grade size dispersion in plastic substrate.The thickness of described heat dissipating layer is 10 microns to 5 millimeters.One or more in aluminum or aluminum alloy, copper or copper alloy, magnesium alloy of described core body are made.
compare with traditional composite, plastic substrate and inorganic filler are compound in nanometer range, and the interfacial area between two-phase is very large, chemical bond between Presence of an interface, form excellent cohesive force, can eliminate the mutually unmatched problem of organic/inorganic, form diverse characteristic and manifest.
surface by nano level material can be large, easily low-surface-energy can fall in reunion, eliminate surface charge, weaken surface polarity, with surface coverage modification, mechanochemical modification, theca externa modification, Topically active modification, high-energy surface modification, utilize precipitation reaction surface modification.Therefore this composite plastic has heat resistance raising; Thermal diffusivity significantly improves; Air-breathing property and hygroscopicity are lower; The advantages such as the size coefficient of expansion is lower.
the diameter of described inorganic filler is 10
-10
～10
-6
rice, the coefficient of heat transfer of described nano composite plastics is greater than 2000W/m
2
k, the thermal conductivity factor of described nano composite plastics is between 5-10W/mK.
the plastic substrate of composite plastic can be in polyamide-based (PA), PET series (PET), epoxy resin (Epoxy Resin), polyimides system (PI), polyphenylene sulfide system (PPS) a kind of.The inorganic filler of composite plastic is a kind of in carbon element, oxide based, nitride based, hydroxide system.The radiator 2 of being made by nano composite plastics has good thermal diffusivity.
the Merlon (PC, Polycarbonate) that described reflector 4 is reflected by height is made, and high reflected P C be take PC as base material, adds highly reflective material as filler in PC base material, as fluorescer etc.Described reflector 4 also can be made of metal.Reflector 4 can also be made by the engineering plastics that are coated with metal level on surface.
the present embodiment adopts said structure, the specifications design by it according to MR16 shot-light, and more than its luminous flux can reach 500 lumens, power can reach 7W.
the utility model adopts above structure, and tool has the following advantages:
1, radiator is by be coated with the better heat conduction paint of one deck heat dispersion or composite plastic at metal or metal alloy core body, combine the advantage of the two, good rigidity and the intensity both with metal, there is again heat dispersion and heat conductivility that heat conduction paint or composite plastic are good, the heat-sinking capability that has effectively improved LED shot-light, effectively reduces light loss;
2, fin is all set on the inside and outside wall of radiator, fin is only externally set compared to existing technology, area of dissipation is larger, and the air of radiator inside is also circulated, can better the LED shot-light inner product torrid zone be gone out and be distributed to extraneous air, radiating efficiency is higher, effectively reduces light decay.
the heat-conducting plastic of addressing in the utility model refers to and inorganic filler is dispersed in to the heat-conductive composite material forming in plastic substrate with sub-micron grade to nano-grade size.
above-described embodiment is only explanation technical conceive of the present utility model and feature; it is a kind of preferred embodiment; its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to Spirit Essence of the present utility model change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (10)
1. a LED shot-light, is characterized in that, it comprises:
Lamp socket, its inside is provided with power supply;
LED lamp plate, is provided with the LED lamp pearl of integration packaging and is electrically connected mutually with described power supply on it;
Reflecting element, it is for the angle of the light adjusting described LED lamp pearl and send;
Radiator, it is arranged on one end of described lamp socket, described radiator has a uncovered cavity and the wall that surrounds this cavity, described LED lamp plate, reflecting element are arranged in described cavity, the heat dissipating layer that the wall of described radiator comprises core body and is coated on described core surface, described core body is made by metal or metal alloy, on the outer surface of described radiator, along radiator, extend radially outwardly and be formed with a plurality of spaced outer fin, on the inner surface of described radiator, along radiator, extend radially inwardly and be formed with a plurality of spaced interior fin.
2. LED shot-light according to claim 1, is characterized in that: described heat dissipating layer is made by heat-conducting plastic.
3. LED shot-light according to claim 1, is characterized in that: described heat dissipating layer is made by heat conduction paint.
4. LED shot-light according to claim 1, is characterized in that: the thickness of described heat dissipating layer is 10 microns to 5 millimeters.
5. LED shot-light according to claim 1, is characterized in that: one or more in aluminum or aluminum alloy, copper or copper alloy, magnesium alloy of described core body are made.
6. LED shot-light according to claim 1, it is characterized in that: described reflecting element is reflector, described reflector has reflective inner surface, the reflection opening being formed by described reflective inner surface edge, at described reflection opening part, extend radially outward the annular turn-up portion of formation and the through hole forming in described reflector bottom, described turn-up portion is installed on radiator and reflector is positioned at the cavity of radiator at least partly, the corresponding described through hole setting of described LED lamp plate so that the light that LED lamp pearl sends through the reflective inner surface of described reflector, reflect away, in described turn-up portion along offering a plurality of spaced holes on its circumferencial direction, the space forming between corresponding two the adjacent interior fin in described hole and reflector arranges so that the air-flow in described cavity is connected with the external world.
7. LED shot-light according to claim 1, is characterized in that: described reflecting element is lens, and described lens are arranged in the cavity of described radiator and cover described LED lamp pearl.
8. LED shot-light according to claim 1, it is characterized in that: described reflecting element comprises reflector and lens, described reflector has reflective inner surface, the reflection opening being formed by described reflective inner surface edge, at described reflection opening part, extend radially outward the annular turn-up portion of formation and the through hole forming in described reflector bottom, described turn-up portion is installed on radiator and reflector is positioned at the cavity of radiator at least partly, described lens are arranged on reflection opening part, described LED lamp plate is arranged near the through hole of described reflector bottom so that the direct transmission of upper surface of the light part scioptics that described LED lamp pearl sends is gone out, part scioptics side refracts to shot-light inside and via reflector, is reflected back lens again, in described turn-up portion along offering a plurality of spaced holes on its circumferencial direction, the space forming between corresponding two the adjacent interior fin in described hole and reflector arranges so that the air-flow in described cavity is connected with the external world.
9. according to the LED shot-light described in claim 6 or 8, it is characterized in that: described reflector is made by high reflected P C.
10. according to the LED shot-light described in claim 6 or 8, it is characterized in that: the engineering plastics that described reflector is coated with high layer of reflective material by metal or surface are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591781.7U CN203500963U (en) | 2013-09-25 | 2013-09-25 | LED spotlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591781.7U CN203500963U (en) | 2013-09-25 | 2013-09-25 | LED spotlight |
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| Publication Number | Publication Date |
|---|---|
| CN203500963U true CN203500963U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320591781.7U Expired - Fee Related CN203500963U (en) | 2013-09-25 | 2013-09-25 | LED spotlight |
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| CN (1) | CN203500963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511926A (en) * | 2013-09-25 | 2014-01-15 | 苏州东亚欣业节能照明有限公司 | LED spotlight |
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2013
- 2013-09-25 CN CN201320591781.7U patent/CN203500963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511926A (en) * | 2013-09-25 | 2014-01-15 | 苏州东亚欣业节能照明有限公司 | LED spotlight |
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|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20140326 Termination date: 20160925 |