CN201206808Y

CN201206808Y - LED lamp

Info

Publication number: CN201206808Y
Application number: CNU2008200940093U
Authority: CN
Inventors: 帅春江; 余光; 赖振田
Original assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2008-05-23
Filing date: 2008-05-23
Publication date: 2009-03-11
Anticipated expiration: 2018-05-23

Abstract

An LED light fitting comprises a radiator and an LED module group thermally connected with the radiator; the radiator comprises a substrate and a plurality of cooling fins extended out of one surface of the substrate; a lug is extended and formed on the other surface of the substrate and is triangular in cross section; a plurality of soaking plates are attached on the lug; and the LED module group is attached on the soaking plates. The LED light fitting adopts soaking plates to cool the light-emitting diodes and can achieve good cooling of light fittings in a limited size, and can solve the heat problem of high-power LED light fittings. In addition, the lug formed on the radiator of the LED light fitting enables the irradiation area of the LED light fitting to be increased.

Description

Led lamp

Technical field

The utility model relates to a kind of led lamp that has heat abstractor.

Background technology

LED source is as a kind of emerging third generation light source, though can't replace traditional incandescent lamp on a large scale now, it has advantages such as long working life, energy-saving and environmental protection, and is generally had an optimistic view of by market.And the module of being made up of light emitting diode at present can produce light source high-power, high brightness, thus will be widely, revolutionaryly replace traditional conventional lighting sources such as incandescent lamp, and then become the main light source that meets the energy-conserving and environment-protective theme.

Yet along with the power of light emitting diode or its module, the increase of brightness, the heat of its generation is also increasing, and is difficult to especially distribute in the less relatively led lamp of volume.So light emitting diode remains at big heat dissipation technology bottleneck, this also is the most crucial part of difficult breakthrough of high-power at present, the high brightness LED lamp tool marketization.The general heat sink conception of industry is that a radiator is set in this light fixture at present, heat is dispersed in the surrounding air with the mode that the free convection air contacts by this spreader surface.Yet only rely on traditional radiator to be difficult to satisfy the radiating requirements of the light emitting diode module of high power high luminance.

In addition, because light emitting diode all has certain irradiating angle, and the light emitting diode in the led lamp all is arranged on the straight circuit board usually, makes the irradiated area of light fixture limited, all is difficult to make the user satisfied under a lot of situations.

The utility model content

In view of this, be necessary to provide a kind of heat radiation good, can increase the led lamp of lighting area again.

A kind of led lamp, comprise that a radiator reaches and the hot linked light emitting diode module of radiator, this radiator comprises a substrate and the some radiating fins that extended by substrate one surface, extending to form a cross section on another surface of this substrate is leg-of-mutton projection, some soaking plate are sticked on this projection, and this light emitting diode module is sticked on described soaking plate.

This led lamp utilization have high thermal conductivity can soaking plate heat that light emitting diode module is produced pass on the radiator and then fast and distribute, can effectively solve the heating problem of High Power LED light fixture.The projection that forms on this radiator in addition, the light direction that makes light emitting diode mounted thereto is to substrate both sides side-sway, under the prerequisite of the quantity that does not increase light emitting diode, increased the irradiating angle of light emitting diode, and then increased the lighting area of led lamp.

With reference to the accompanying drawings, the utility model will be further described in conjunction with specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional combination figure of a preferred embodiment of the utility model led lamp.

Fig. 2 is the three-dimensional exploded view of led lamp among Fig. 1.

Fig. 3 is another visual angle figure figure of led lamp among Fig. 1.

Fig. 4 is the front view of led lamp among Fig. 1.

Fig. 5 marks the upward view of air-flow trend for led lamp among Fig. 1.

The specific embodiment

Please refer to Fig. 1-3, the utility model led lamp comprises a radiator 10, place the some soaking plate 20 on this radiator 10 and the light emitting diode module 30 on soaking plate 20 of being sticked.This radiator 10 and soaking plate 20 are used for to light emitting diode module 30 heat radiations, make light emitting diode module 30 remain on the interior work of temperature range of its permission.In the utility model, soaking plate 20 is the plate shaped heat pipe that inside has capillary structure and liquid.

The projection 15 that radiator 10 comprises a substrate 12, extended the some radiating fins 14 form and extended to form by another surface of substrate 12 by a surface of substrate 12.The roughly rectangular bulk of substrate 12.Radiating fin 14 is perpendicular to substrate 12 and extension longitudinally parallel to each other.Form the runner 140 that the air feed stream on the longitudinal direction passes through between the per two adjacent radiating fins 14.These runners 140 are parallel with the long limit of substrate 12.Middle part along substrate 12 reduces gradually to the height of the both sides of substrate 12 radiating fin 14, thereby the bottom of radiator 10 curved (please join Fig. 4).The both sides of substrate 12 offer some otch facing each other 16 respectively, and these otch 16 extend to substrate 12 in and with 14 cut-outs of part radiating fin along the direction vertical with radiating fin 14.Also be provided with the groove 18 of some cut-out radiating fins 14 on the end face of substrate 12, these grooves 18 extend along the direction parallel with otch 16, and each groove 18 all directly is connected with wherein pair of notches 16.In the present embodiment, the quantity of groove 18 is less than the logarithm of otch 16, and the pair of notches 16 of whenever being separated by offers a groove 18.

Projection 15 end faces along substrate 12 one that makes progress is convexly equipped with formation, and projection 15 longitudinal extensions along substrate 12, and promptly its bearing of trend is parallel with the bearing of trend of radiating fin 14.The cross-sectional profiles of projection 15 is roughly triangular in shape, and its top 151 is positioned at the middle part of the end face of substrate 12.Projection 15 height 151 reduces to dual-side gradually along its top.Form some end differences 152 on the two sides of projection 15, these end differences 152 are symmetrical distribution along the top 151 of projection 15.Otch 16 is distributed in the both sides of projection 15.

Soaking plate 20 comprises one first soaking plate 21 and some second soaking plate 22.First soaking plate 21 is strip, and its cross section is a rectangle, and places on the top 151 of projection 15.Second soaking plate 22 is triangular prism shaped, and its cross section is all triangular in shape.Second soaking plate 22 is placed on the end difference 152 on protruding 15 two sides, thereby makes the two sides of projection 15 form level and smooth inclined plane, and the end face of this two inclined plane and substrate 12 is in a certain angle, is used for installing light emitting diode module 30 (please join Fig. 4).

Light emitting diode module 30 comprises the circuit board 31 of some strips, and each circuit board 31 is provided with some light emitting diodes 32.Each circuit board 31 is separately positioned on each soaking plate 20.Be appreciated that ground, these circuit boards 31 can replace with the big circuit board of a monoblock, and light emitting diode 32 can be matrix form and be arranged on this monoblock circuit board.

Please also refer to Fig. 4 and Fig. 5, during this led lamp assembling, first soaking plate 21 is attached on the top 151 of projection 15, and each second soaking plate 22 adheres on each end difference 152 of projection 15.Each circuit board 31 is sticked respectively on each soaking plate 20 again.Because second soaking plate 22 forms level and smooth inclined plane after being housed on the end difference 152, place the circuit board 31 on second soaking plate 22 therefore can form an angle with the end face of substrate 12.

During this led lamp work, because soaking plate 20 has higher heat conduction efficiency, the heat that light emitting diode module 30 produces can be absorbed by soaking plate 20 and be delivered in time on the projection 15 and substrate 12 of radiator 10, thereby can not assemble near light emitting diode module 30.Crossing radiating fin 14 by the natural air convection current at last is dispersed into heat in the surrounding air.In the present embodiment, a part of cooling air can flow along the runner 140 of 14 of radiating fins and be flowed out by two shorter lateral sides of such directions of this substrate 12, and a part of in addition air-flow can along otch 16 and groove 18 flows and flowed out by two long side directions of substrate 12.Like this, the cooling blast heat that will flow out and produce when taking away light emitting diode module 20 work by four direction.The setting of these otch 16 and groove 18 has strengthened the cross-ventilation of 14 of the radiating fins of radiator 10 greatly.Therefore, the utility model in conjunction with soaking plate 20 heat-conductive characteristic efficiently, can solve the heat dissipation problem of led lamp under the condition of volume that does not increase radiator and radiating fin density and have higher radiating efficiency.

Be certain included angle because be arranged on the substrate 12 of circuit board 31 and radiator 10 on the two sides of projection 15 of radiator 10, make that its irradiating angle of light that light emitting diode 32 sends can be to the expansion of the both sides of radiator 10, thereby increase towards the irradiated area of the both sides of radiator 10.Flatly be arranged on the substrate 12 with light emitting diode 32 and compare, under the identical prerequisite of the quantity of light emitting diode 32, the irradiated area of light emitting diode 32 of the present utility model is bigger.

Claims

1. led lamp, comprise a radiator and the light emitting diode module that is connected with radiator, this radiator comprises a substrate and the some radiating fins that extended by substrate one surface, it is characterized in that: extending to form a cross section on another surface of this substrate is leg-of-mutton projection, some soaking plate are sticked on this projection, and this light emitting diode module is sticked on described soaking plate.

2. led lamp as claimed in claim 1 is characterized in that: described soaking plate is a plate shaped heat pipe.

3. led lamp as claimed in claim 1 is characterized in that: form some end differences on the two sides of described projection, these end differences are symmetrical distribution along the top of projection.

4. led lamp as claimed in claim 3, it is characterized in that: described some soaking plate comprise that a cross section is that bar shaped soaking plate and some cross sections of rectangle is leg-of-mutton triangular prism shaped soaking plate, described bar shaped soaking plate place the projection the top, described triangular prism shaped soaking plate place the projection two sides on end difference on make these protruding both sides form level and smooth inclined plane.

5. led lamp as claimed in claim 3 is characterized in that: the top of described projection is positioned at the middle part of substrate.

6. led lamp as claimed in claim 1 is characterized in that: described light emitting diode module comprises some circuit boards, and each circuit board is provided with some light emitting diodes, and each circuit board is sticked respectively on each soaking plate.

7. led lamp as claimed in claim 1 is characterized in that: the both sides of described substrate are provided with some the extension and the otch of cut-off parts radiating fin at least in it, the bearing of trend of these otch is perpendicular to the bearing of trend of radiating fin.

8. led lamp as claimed in claim 7 is characterized in that: described otch is oppositely arranged in twos, and places the both sides of projection.

9. led lamp as claimed in claim 7, it is characterized in that: the groove that also is provided with some cut-out radiating fins on the described radiator, these grooves extend along the direction parallel with otch, and wherein at least one groove is connected with one of them otch.

10. led lamp as claimed in claim 1 is characterized in that: the height of this radiating fin reduces to the both sides of substrate gradually along the middle part of substrate.