CN201206806Y

CN201206806Y - LED lamp

Info

Publication number: CN201206806Y
Application number: CNU2008200940074U
Authority: CN
Inventors: 张文祥; 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; the radiator is provided with a substrate and a plurality of cooling fins formed on the substrate; a heat conductor is formed on the substrate; the cross section of the heat conductor is triangular; and longitudinally upward height of the heat conductor gradually decreases along one end of the conductor to the other end. Through the inclined heat conductor structure and the structure of the triangular cross section, the LED light fitting enables an LED module group arranged on the light fitting to form a certain angle with the horizontal plane so as to increase the irradiation angle of the light fitting under the premise of not increasing the number of the LEDs, thereby increasing the illuminated area and meeting the customized needs in lighting angle.

Description

Led lamp

Technical field

The utility model relates to a kind of led lamp with 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.

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 a radiator, this radiator has a substrate and is formed at some radiating fins on the substrate, and a heat carrier is formed on the described substrate, the cross section of this heat carrier is triangular in shape, and the height of this heat carrier on vertically reduces to the other end gradually along the one end.

This led lamp is provided with the high thermal conductivity energy on radiator heat carrier dispels the heat to light emitting diode module, can effectively solve the heating problem of High Power LED light fixture.The structure of this heat carrier inclination and triangular-section, make light emitting diode module mounted thereto and horizontal plane form certain included angle, under the prerequisite of the quantity that does not increase light emitting diode, increased the irradiating angle of light fixture, and then increased lighting area, and can also satisfy the needs of user's specific illumination angle simultaneously.

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 of led lamp among Fig. 1.

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

Fig. 5 is the side view of 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 heat carrier 20 on this radiator 10 and the light emitting diode module 30 on heat carrier 20 of being sticked.This radiator 10 and heat carrier 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.

Radiator 10 comprises that the end face that a substrate 12, some first radiating fins 142 that formed by the downward extension in the bottom surface of substrate 12 reach by substrate 12 extends upward some second radiating fins 144 that form.The roughly rectangular bulk of substrate 12, it has two long relatively longitudinally limits and two horizontal relative short edges.The outer peripheral position of relative heat carrier 20 offers some first through holes 124 on the substrate 12, and these first through holes 124 are used for heat carrier 20 is installed on substrate 12.Also offer some second through holes 125 around first through hole 124, these second through holes 125 pass for fixture (figure does not show) and are used for fixing this led lamp.First radiating fin 142 is perpendicular to substrate 12 and extension longitudinally parallel to each other.Centre position along substrate 12 reduces gradually to the height of two side directions, first radiating fin 142 of substrate 12, thereby the bottom of radiator 10 is arcuation (please join Fig. 4).Second radiating fin 144 relies on the position of dual-side perpendicular to substrate 12 and the end face that is distributed in substrate 12.Height along edge direction second radiating fin 144 of the interior side direction substrate 12 of substrate 12 reduces gradually.Second radiating fin 144 and first radiating fin 142 are parallel to each other, and form the runner 140 that air feed stream passes through between two adjacent first radiating fins 142 and two adjacent second radiating fins 144, the bearing of trend of these runners 140 is parallel with the long limit of substrate 12.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 second radiating

fin

144 and 142 cut-outs of part first radiating fin along the direction vertical with first radiating fin 142.Also be provided with the groove 18 of some cut-out first radiating fins 142 on the bottom surface 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.

Heat carrier 20 places on the end face of substrate 12.Heat carrier 20 is made by the material with high-termal conductivity such as copper, aluminium or its alloy.In the present embodiment, heat carrier 20 is a heat-conducting block that separates with radiator 10, is appreciated that ground, and this heat carrier 20 one that can make progress from the end face of the substrate 12 of radiator 10 extends to form.This heat carrier 20 also is not limited to the metal heat-conducting piece, can be the phase change radiator, forms cavity in it, fills hydraulic fluid utilizes liquid in it phase change process conduction heat then, as heat pipe, soaking plate etc.The cross section of heat carrier 20 is triangular in shape, and heat carrier 20 is along extending on the longitudinal direction of substrate 12.The top 21 of heat carrier 20 is parallel with second radiating fin 144 and place centre position on the end face of substrate 12.The height transversely of heat carrier 20 reduces to its both sides gradually along its top 21, and two sides of heat carrier 20 (indicate) along its top 21 symmetries, thereby two sides of heat carrier 20 form the inclined plane that certain included angle is arranged with the end face of substrate 12.Forming some installing holes 201 on two sides of heat carrier 20 is used for light emitting diode module 30 is mounted thereon.First through hole 124 on the outward flange of heat carrier 20 on the counterpart substrate 12 also offers some third through-holes 205, in order to heat carrier 20 is installed on the radiator 10.Heat carrier 20 height in the vertical 23 reduces to its front end 22 gradually along its rear end, thus the end face of the top 21 of heat carrier 20 and substrate 12 in the vertical shape (please join Fig. 5) in an angle.Second radiating fin 144 places the both sides of heat carrier 20.

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 arranged on two sides of heat carrier 20 equably.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.

During the assembling of this led lamp, heat carrier 20 places on the end face of substrate 12 of radiator 10, and the circuit board 31 of light emitting diode module 30 places on the two sides of heat carrier 20.

Please also refer to Fig. 4 and Fig. 5, during this led lamp work, the heat that light emitting diode module 30 produces can be absorbed by heat carrier 20 and be delivered in time on the substrate 12 of radiator 10, thereby can not assemble near light emitting diode module 30.Crossing first, second radiating fin 142,144 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 142,144 of first, second radiating fins and be flowed out by two short side 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 limits 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, reduced the weight of radiator 10 simultaneously, therefore, this radiator 10 is under the condition that does not increase its volume and radiating fin density and have higher radiating efficiency.The utility model can solve the heat dissipation problem of led lamp in conjunction with heat carrier 20 heat-conductive characteristic efficiently in addition.

Be certain included angle because be arranged on the substrate 12 of circuit board 31 and radiator 10 on the two sides of heat carrier 20, 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.In addition, because heat carrier 20 height in the vertical increases to its rear end 22 gradually along front end 22, place the circuit board 31 of rear end 22 parts of heat carrier 20 to raise up, thereby the irradiating angle of light emitting diode 32 when being horizontally disposed with mutually specific energy to direction beat shown in Fig. 5 arrow, its irradiated area towards this direction is increased, to satisfy the illumination needs of user under this angle.

Claims

1. led lamp, comprise a radiator, this radiator has a substrate and is formed at some radiating fins on the substrate, it is characterized in that: a heat carrier is formed on the described substrate, the cross section of this heat carrier is triangular in shape, and the height of this heat carrier on vertically reduces to the other end gradually along the one end.

2. led lamp as claimed in claim 1 is characterized in that: described heat carrier is the phase change radiator.

3. led lamp as claimed in claim 1 is characterized in that: described heat carrier and radiator are one-body molded.

4. led lamp as claimed in claim 1 is characterized in that: described radiating fin comprises first radiating fin and second radiating fin that is formed at described substrate two opposite surfaces, and the described heat carrier and second radiating fin are in the same surface of substrate.

5. led lamp as claimed in claim 4 is characterized in that: described heat carrier places the middle position of substrate, and the two sides of heat carrier are symmetrical distribution along the top of heat carrier, and described second radiating fin is distributed in the both sides of heat carrier.

6. led lamp as claimed in claim 4 is characterized in that: described first radiating fin and second radiating fin are parallel to each other, and described heat carrier longitudinal extension direction is parallel with described first, second radiating fin bearing of trend.

7. led lamp as claimed in claim 6, it is characterized in that: the both sides of described substrate are provided with some the extension and the otch of cut-off parts first radiating fin and second radiating fin at least in it, the bearing of trend of these otch is perpendicular to the bearing of trend of first, second 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 heat carrier.

9. led lamp as claimed in claim 7, it is characterized in that: the groove that also is provided with some cut-out first 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: described light emitting diode module comprises some circuit boards, and each circuit board is provided with some light emitting diodes, and described circuit board is sticked on the two sides of heat carrier.