CN101566281A - LED fixture with heat-dissipating structure - Google Patents
LED fixture with heat-dissipating structure Download PDFInfo
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- CN101566281A CN101566281A CNA2009100311936A CN200910031193A CN101566281A CN 101566281 A CN101566281 A CN 101566281A CN A2009100311936 A CNA2009100311936 A CN A2009100311936A CN 200910031193 A CN200910031193 A CN 200910031193A CN 101566281 A CN101566281 A CN 101566281A
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- light emitting
- emitting diode
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Abstract
The invention discloses an LED fixture with a heat-dissipating structure, which comprises a lamp shade part, an illuminating part and at least one heat-dissipating unit, wherein the inner lateral surface of the lamp shade part can accommodate the illuminating part and can project a light source sent by the illuminating part; the illuminating part comprises a circuit board and at least one LED; the LED is arranged on the circuit board, and a position of a radiating fin corresponding to the LED on the circuit board is provided with a bore; a position of the lamp shade part corresponding to the bore is provided with a through hole; and one end of the heat-dissipating unit passes through the through hole and the bore in turn and is directly or indirectly contacted with the radiating fin, while the other end is riveted on a metal cover to conduct heat produced by the LED to the metal cover. Therefore, the LED in the fixture is provided with a proprietary heat-dissipating pipeline, the heat dissipation can be enhanced, and the service life of the fixture is effectively prolonged.
Description
Technical field
The present invention relates to a kind of light fixture with light emitting diode, the particularly a kind of heat that light emitting diode produced can being passed on the metal cap apace improving radiating efficiency, and is applied to the light fixture on the backlight liquid crystal display module.
Background technology
Because the modern is for the selection of buying electronic installation, all with frivolous as overriding concern, therefore, society is mostly with liquid crystal flat panel display (Liquid Crystal Display now, abbreviation LCD) panel is as the main flow of display product, because the product (as: television set of these LCD panels, monitor, mobile computer ... Deng) use cathode-ray tube (Cathode-Ray Tube compared to tradition, abbreviation CRT) display product of video picture, it is more compact that volume seems, the user not only moves these LCD products easily, nor need the too much space of planning, in order to putting these products, and then increase the availability in space effectively.
General speech, because liquid crystal itself is a luminescent material not, so the LCD panel mainly relies on backlight module, as its sufficient brightness of supply and the light source that is evenly distributed, make its normally show image, at present, backlight module on the market uses cold-cathode tube (CCFL) or light emitting diode (Light-emittingdiode usually, be called for short LED) as light emitting source, but because light emitting diode in contrast to cold-cathode tube, not only have outside the saturation degree of higher color, more can further promote contrast, and can effectively save the consume of the energy, prolong the service life of LCD panel product, because cold-cathode tube in use, be continue to light luminous, therefore, in the display frame of LCD panel, having many black partly when (promptly not light requirement line), mainly is the light that blocks cold-cathode tube by liquid crystal light valve, at this moment, cold-cathode tube is luminous because of continuing, so can consume the many energy, but if with light emitting diode as light emitting source, then in the display frame of LCD panel, have many black partly the time, then the light of the light emitting diode of the dark space part in the corresponding picture can be weakened or extinguishes, reaching energy-saving effect, and can effectively improve the contrast of light and shade, moreover, light emitting diode itself and unlike as the cold-cathode tube contains the composition of mercury or some heavy metals, so can avoid causing environmental pollution, and its life-span can reach more than tens thousand of hours, and then effectively reduce displacement cost or generation of waste, therefore, with light emitting diode as the LCD product of light emitting source to become main flow gradually.
The luminous efficiency of light emitting diode is directly proportional with the heat that itself produces; that is to say the brightness high light emitting diode of healing; the heat that the is produced height of also can healing; so the radiator structure of light emitting diode itself is just very important; because too high heat; not only cause light emitting diode to damage easily; more can make and utilize the light fixture of light emitting diode as light emitting source; for a long time; under the situation of high heat; the degree of accelerated ageing; and seriously shorten service life of product; therefore; shown in 1 figure; as the sectional schematic diagram of traditional light emitting diode 1 after encapsulation is dispatched from the factory; this light emitting diode 1 comprises a diffuser 11; one chip 13; one loading plate (submount) 15 and a fin 17; because the concrete annexation of light emitting diode 1 has been mature technology now; here no longer be described in detail; when this light emitting diode 1 normal operation; and emit beam; the heat that this chip 13 is produced; can be passed to the external world apace via this fin 17; can effectively reduce the heat of this light emitting diode 1 integral body; but; because light emitting diode 1 must be contained on the circuit board; could form a complete illuminating part; and normally obtain the supply of power supply; and circuit board is generally the material of insulation; and heat transfer efficiency is all comparatively bad; still more; people make light fixture that good projection effect can be arranged; common meeting reflective material of coating one deck (as: saturated polynary ester) on a lampshade medial surface; like this when light emitting diode 1 is contained in this lampshade together with circuit board; will make the heat that this light emitting diode 1 is produced; be accumulated in large quantities in this lampshade; cause this light fixture to make that because of overheated assembly of its inner or contiguous this light fixture is aging, that accelerates product eliminates the throw-over degree.
So how have the light fixture of light emitting diode at tradition, improve, so that effectively solve the above problems, become promptly at present that each is made, the manufacturer of design panel or light fixture desires most ardently an important topic of solution.
Summary of the invention
The light fixture that has light emitting diode at above-mentioned tradition, exist and be difficult for heat radiation, cause the backlight module that uses this light fixture easily, understand problems such as generation component is aging easily, the technical problem to be solved in the present invention provides a kind of led lamp of tool radiator structure.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of led lamp of tool radiator structure, be applied on the backlight liquid crystal display module, comprise a lampshade portion, one illuminating part and at least one heat-sink unit, wherein said lampshade portion comprises a metal cap and a reflection lamellar body, described reflector plate system is coated on the medial surface of described metal cap, and the medial surface of described metal cap can hold described illuminating part, so that the light source that described illuminating part sent, can be via the reflecting effect of described reflection lamellar body, and distribute towards the outside of described metal cap, in addition, described illuminating part comprises a circuit board and at least one light emitting diode, each described light emitting diode is located on the described circuit board, and on the described circuit board corresponding to the position of a fin of each described light emitting diode, be respectively equipped with a perforate, the position of the corresponding described perforate of described lampshade portion, then be provided with a through hole, one end of described heat-sink unit passes described through hole and described perforate in regular turn, and directly touch mutually with the fin of described light emitting diode, perhaps touch mutually with the fin of described light emitting diode indirectly by a thermal grease, its other end then is connected on the described metal cap, so that with the heat that described light emitting diode produced, conduct on the described metal cap by described heat-sink unit, to improve the integral heat sink efficient of described light fixture, because each light emitting diode in the light fixture all has an exclusive hot channel, the heat of self can be conducted to metal cap apace, and by large tracts of land that metal cap had, strengthen heat radiation, thereby can effectively prolong the service life of light fixture.
As another kind of embodiment, comprise a lampshade portion and an illuminating part, wherein said lampshade portion comprises a metal cap and a reflection lamellar body, described reflector plate system is coated on the medial surface of described metal cap, and the medial surface of described metal cap can hold described illuminating part, so that the light source that described illuminating part sent, can be via the reflecting effect of described reflection lamellar body, and distribute towards the outside of described metal cap, described illuminating part comprises a circuit board and at least one light emitting diode, each described light emitting diode is located on the described circuit board, and on the described circuit board corresponding to the position of a fin of each described light emitting diode bottom, be respectively equipped with a perforate, the position of the corresponding described perforate of described lampshade portion is towards the direction of described light emitting diode, punching press is provided with a heating column, the end of described heating column passes described perforate, and directly or indirectly touch mutually with the fin of described light emitting diode, each light emitting diode in the described light fixture can see through described heating column, the heat of self is conducted on the metal cap apace, to strengthen radiating effect.
Preferably, described led lamp still comprises a backboard, described lampshade portion can abut on the described backboard, and the position of corresponding each the described through hole of described backboard, be respectively equipped with backboard perforation, each described heat-sink unit can pass each described backboard perforation, through hole and perforate in regular turn, and directly or indirectly touches mutually with the fin of described light emitting diode, the heat that described light emitting diode was produced can be passed on the described backboard.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is existing light-emitting diode structure sectional schematic diagram.
Fig. 2 is originally to be the structural representation of the embodiment of the invention one.
Fig. 3 is originally to be the structural representation of the embodiment of the invention two.
Fig. 4 is originally to be the structural representation of the embodiment of the invention three.
The specific embodiment
The present invention is a kind of led lamp of tool radiator structure, be mainly used in the backlight liquid crystal display module, be primarily aimed at traditional light-emitting diode structure feature, overall structure to light fixture improves, so that can effectively improve the heat transfer efficiency of whole light fixture, in the while in service life that effectively prolongs light fixture, give full play to the advantage that light emitting diode has.
Embodiment one
As shown in Figure 2, led lamp 2 comprises a lampshade portion 21, one illuminating part 23 and at least one heat-sink unit 25, wherein lampshade portion 21 comprises a metal cap 211 and a reflection lamellar body 213, metal cap 211 has a section configuration, and side forms an accommodation space 210 within it, illuminating part 23 is positioned at accommodation space 210, reflection lamellar body 213 is saturated polynary ester (Polyethylene Terephthalate, abbreviation PET) plastic material, and be coated on the medial surface of metal cap 211, so that the light source that illuminating part 23 is sent, can be via the reflection of reflection lamellar body 213, and distribute towards the outside of metal cap 211.
Referring to Fig. 2, illuminating part 23 comprises a circuit board 231 and at least one light emitting diode 233, wherein light emitting diode 233 is traditional light emitting diode construction, therefore, itself be provided with a fin 234, light emitting diode 233 is located on the circuit board 231, can obtain the power supply of circuit board 231, and normal operation, corresponding to the position of the fin 234 of each light emitting diode 233, be respectively equipped with a perforate 235 on the circuit board 231, perforate 235 runs through circuit board 231, lampshade portion 21 is provided with at least one through hole 215, and when illuminating part 23 was placed in the accommodation space 210 of lampshade portion 21, each perforate 235 was corresponding to each through hole 215.
In this embodiment, with each heat-sink unit 25 serves as that the heat radiation rivet is an example, describe, one end of each heat-sink unit 25 passes through hole 215 and perforate 235 in regular turn, directly touch mutually with the fin 234 of light emitting diode 233, its other end then connects (riveted) on metal cap 211, because the heat-conducting effect of heat-sink unit 25 is better than the heat-conducting effect of the fin 234 of light emitting diode 233, heat that so light emitting diode 233 can be produced, conduct to apace on the metal cap 211, and then effectively improve the integral heat sink efficient of led lamp 2, thus, because each light emitting diode 233 in the led lamp 2 all has an exclusive hot channel (being heat-sink unit 25), the heat of self can be conducted to apace on the metal cap 211, and, strengthen heat radiation, so can effectively prolong the service life of led lamp 2 by the large tracts of land that metal cap 211 is had.
In other embodiment of the present invention ground, the producer can be according to the demand of producing, or the design of product, and make the fin of heat-sink unit and light emitting diode integrally formed, to avoid in the process of riveted, one end excessive compression of heat-sink unit causes light emitting diode breaking circuit plate to light emitting diode.
Embodiment two
As shown in Figure 3, led lamp 3 comprises a lampshade portion 31, one illuminating part 33, one backboard 34 and at least one heat-sink unit 35, wherein lampshade portion 31 comprises a metal cap 311 and a reflection lamellar body 313, reflection lamellar body 313 is coated on the medial surface of metal cap 31, to improve the reflecting effect of lampshade portion 31, and a side of lampshade portion 31 is provided with at least one through hole 315 (among Fig. 3, overlap with heat-sink unit 35), illuminating part 33 can be contained in the medial surface of lampshade portion 31, and the light source that it sent, can be via the reflection of reflection lamellar body 313, distribute in the outside towards metal cap 311, illuminating part 33 comprises a circuit board 331 and at least one light emitting diode 333, each light emitting diode 333 is located on the circuit board 331, and the position of the fin 334 of circuit board 331 corresponding each light emitting diode 333 be respectively equipped with a perforate 335, and each perforate 335 is still corresponding with each through hole 315 respectively.
331 of fin 334 and circuit boards still are provided with a thermal grease 37, the heat-conducting effect of thermal grease 37 is better than the heat-conducting effect of the fin 334 of light emitting diode 333, the section configuration of backboard 34 is U type (only showing a part of backboard 34 among Fig. 3), and be metal material, one side of lampshade portion 31 can be resisted against on the backboard 34, and the position of backboard 34 corresponding each through hole 315 then is respectively equipped with backboard perforation 340 (among Fig. 3, overlapping with heat-sink unit 35).
In the present embodiment, each heat-sink unit 35 is a heat radiation screw, and an end of each heat-sink unit 35 can screw togather in regular turn and pass backboard perforation 340, through hole 335 and perforate 315, and the position is in the position of the fin 334 of contiguous light emitting diode 333, to be connected with thermal grease 37, its other end then is locked together on the backboard 34, so, the heat that light emitting diode 333 is produced, can pass through thermal grease 37 and heat-sink unit 35 in regular turn, and conduct on the backboard 34, strengthen heat radiation with the large tracts of land that sees through backboard 34, and reduce the heat that led lamp 3 is accumulated, and then effectively improve the integral heat sink efficient of led lamp 3.
The said heat-sink unit of the embodiment of the invention is not only to be defined in aforesaid heat radiation rivet or heat radiation screw; and can be other shape or structure; as long as its can be directly or indirectly with the heat that light emitting diode produced; conduct on the metal cap, be heat-sink unit of the present invention, in other embodiments of the invention; produce the dealer for saving cost; only use the preferable metal cap of reflectivity, and do not use the reflection lamellar body, also within protection scope of the present invention.
Embodiment three
As shown in Figure 4, led lamp 4 comprises a lampshade portion 41 and an illuminating part 43, wherein lampshade portion 41 comprises a metal cap 411 and a reflection lamellar body 413, reflection lamellar body 413 is the medial surfaces that are coated on metal cap 411, and a side punching press of lampshade portion 41 is provided with at least one heating column 415, the end of heating column 415 is to extend towards the direction of the medial surface of metal cap 411, illuminating part 43 can be contained in the medial surface of metal cap 411, comprise a circuit board 431 and at least one light emitting diode 433, each light emitting diode 433 is provided in a side of on the circuit board 431, and on the circuit board 431 corresponding to the position of a fin 434 of each light emitting diode 433, be respectively equipped with a perforate 435, and each perforate 435 is still corresponding with each heating column 415 respectively, end for each heating column 415 can pass through hole 435, and directly touch mutually with the fin 434 of light emitting diode 433, perhaps see through a thermal grease 47 that is located between circuit board 431 and the fin 434, and touch mutually with the fin 434 of light emitting diode 433 indirectly, so, each light emitting diode 433 in the led lamp 4 can see through heating column 415, the heat of self is conducted on the metal cap 411 apace, to strengthen radiating effect.
The above is preferred embodiment of the present invention, and the interest field that the present invention advocated is not limited thereto; press all this technology those skilled in the art that are familiar with; according to the disclosed technology contents of the present invention, the equivalence that can expect easily changes, all should be within protection category of the present invention.
Claims (9)
- The led lamp of 1 one kinds of tool radiator structures is characterized in that comprising:One lampshade portion comprises a metal cap, and a side of described lampshade portion is provided with at least one through hole;One illuminating part, be contained in the medial surface of described metal cap, comprise a circuit board and at least one light emitting diode, each described light emitting diode is located on the described circuit board, and on the described circuit board corresponding to the position of a fin of each described light emitting diode bottom, be respectively equipped with a perforate, still respectively corresponding each the described through hole of each described perforate;At least one heat-sink unit, the one end passes described through hole and described perforate, and touch mutually with the fin of described light emitting diode directly or indirectly, its other end then is connected on the described metal cap, the heat that described light emitting diode was produced can be conducted on the described metal cap.
- The led lamp of 2 tool radiator structures according to claim 1 is characterized in that: an end of described heat-sink unit is resisted against on the fin of described light emitting diode.
- The led lamp of 3 tool radiator structures according to claim 1, it is characterized in that: an end of described heat-sink unit is positioned at the position of the fin of contiguous described light emitting diode, and be provided with a thermal grease between an end of described heat-sink unit and the fin of described light emitting diode, so that the heat that described light emitting diode produced is passed on the described heat-sink unit by described thermal grease.
- 4 led lamps according to claim 1 or 2 or 3 described tool radiator structures is characterized in that: wherein said lampshade portion still comprises a reflection lamellar body, and described reflection lamellar body is coated on the medial surface of described metal cap.
- The led lamp of 5 one kinds of tool radiator structures is characterized in that comprising:One lampshade portion comprises a metal cap, and a side of described lampshade portion is provided with at least one through hole;One illuminating part, be contained in the medial surface of described metal cap, comprise a circuit board and at least one light emitting diode, each described light emitting diode is located on the described circuit board, and on the described circuit board corresponding to the position of a fin of each described light emitting diode bottom, be respectively equipped with a perforate, still respectively corresponding each the described through hole of each described perforate;One backboard, a side of one side and described lampshade portion leans, and the position of its corresponding each described through hole is respectively equipped with backboard perforation;At least one heat-sink unit, the one end passes described backboard perforation, described through hole and described perforate, and touch mutually with the fin of described light emitting diode directly or indirectly, its other end then is connected on the described backboard, the heat that described light emitting diode was produced can be conducted on the described backboard.
- The led lamp of 6 tool radiator structures according to claim 5, it is characterized in that: an end of described heat-sink unit is positioned at the position of the fin of contiguous described light emitting diode, and be provided with a thermal grease between an end of described heat-sink unit and the fin of described light emitting diode, so that the heat that described light emitting diode produced is passed on the described heat-sink unit by described thermal grease.
- 7 led lamps according to claim 5 or 6 described tool radiator structures is characterized in that: described lampshade portion still comprises a reflection lamellar body, and described reflection lamellar body is coated on the medial surface of described metal cap.
- The led lamp of 8 one kinds of tool radiator structures is characterized in that comprising:One lampshade portion comprises a metal cap, and a side punching press of described lampshade portion is provided with at least one heating column, and the end of described heating column extends towards the direction of the medial surface of described metal cap;One illuminating part, be contained in the medial surface of described metal cap, comprise a circuit board and at least one light emitting diode, each described light emitting diode is located on the described circuit board, and on the described circuit board corresponding to the position of a fin of each described light emitting diode, be respectively equipped with a perforate, respectively corresponding each the described heating column of each described perforate, and the end of each described heating column passes each described perforate, touching mutually with the fin of described light emitting diode directly or indirectly, and the heat that described light emitting diode produced can be conducted on the described metal cap.
- The led lamp of 9 tool radiator structures according to claim 8 is characterized in that: the end of described heating column is resisted against on the fin of described light emitting diode.The end of described heating column is positioned at the position of the fin of contiguous described light emitting diode, and be provided with a thermal grease between the fin of the terminal and described light emitting diode of described heating column, described lampshade portion comprises a reflection lamellar body, and described reflection lamellar body overlays on the side of described metal cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100311936A CN101566281A (en) | 2009-04-29 | 2009-04-29 | LED fixture with heat-dissipating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100311936A CN101566281A (en) | 2009-04-29 | 2009-04-29 | LED fixture with heat-dissipating structure |
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| CN101566281A true CN101566281A (en) | 2009-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2009100311936A Pending CN101566281A (en) | 2009-04-29 | 2009-04-29 | LED fixture with heat-dissipating structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102889524A (en) * | 2012-10-16 | 2013-01-23 | 广州市富胜照明灯具科技有限公司 | Honeycomb-convection heat-superconducting LED (light emitting diode) reflector lamp |
| CN103348177A (en) * | 2011-01-26 | 2013-10-09 | 李贞勋 | Led module and lighting assembly |
| CN112582524A (en) * | 2019-09-12 | 2021-03-30 | 群创光电股份有限公司 | Light emitting device and method for manufacturing the same |
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| CN101307893A (en) * | 2007-05-16 | 2008-11-19 | Nec照明株式会社 | Lighting device |
| CN201434226Y (en) * | 2009-04-29 | 2010-03-31 | 苏州世鼎电子有限公司 | Luminous diode lamp with heat radiation structure |
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| CN2585273Y (en) * | 2002-12-12 | 2003-11-05 | 葛世潮 | LED illumination device |
| CN1560672A (en) * | 2004-02-17 | 2005-01-05 | �Ѵ���ɷ�����˾ | Backlight module and heat radiation structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103348177A (en) * | 2011-01-26 | 2013-10-09 | 李贞勋 | Led module and lighting assembly |
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| CN112582524A (en) * | 2019-09-12 | 2021-03-30 | 群创光电股份有限公司 | Light emitting device and method for manufacturing the same |
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Application publication date: 20091028 |