CN201206814Y

CN201206814Y - LED lamp

Info

Publication number: CN201206814Y
Application number: CNU2008200940182U
Authority: CN
Inventors: 刘军; 陈永东; 翁世勋
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 lamp holder, a radiator connected with the lamp holder, as well as a plurality of LED module groups arranged on the radiator; the radiator comprises a heat conductor with a central axis, and a plurality of cooling fins arranged around the heat conductor; and an angle is formed between the cooling fins and the axis of the heat conductor. The radiator of the LED light fitting has compact structure and larger cooling area and can achieve good cooling of the light fitting in a limited size so as to solve the heat problem of high-power LED light fittings. In addition, the cooling fins of the radiator form an angle with the axis of the heat conductor, so that the irradiation angle of the light produced by the LED module groups on the radiator can be deflected toward a certain direction, thereby meeting the lighting need of user-specific directions.

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 the heat that the light emitting diode that power, brightness are big more or its module produce is big more, and is difficult to 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.So satisfy the LED light lamp radiating requirements of high power, high brightness so that it can operate as normal prevent light decay, just must provide area of dissipation very big radiator.The common like this radiator shared volume in light fixture that can cause is big, and overall lamp is specifically long-pending also big, makes this fitting structure volume be difficult to apply in room lighting greatly.

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.Simultaneously, the irradiated area that the irradiating angle that this is limited obtained has wherein again, and a part is that user institute is unwanted, therefore how realizing the illumination of led lamp specific direction, to improve the utilization rate of its light, also is a big problem of the required solution of present industry.

The utility model content

In view of this, be necessary to provide a kind of and have smaller size smaller and heat radiation is good, can realize the led lamp of the illumination of specific direction again.

A kind of led lamp, it comprises a lamp socket, a radiator that is connected with this lamp socket and is installed on some light emitting diode module on this radiator, described radiator comprises that one has the heat carrier of central axis and places some radiating fins of heat carrier periphery, and the axis of described radiating fin and heat carrier is an angle.

The heat spreader structures compactness of this led lamp, and have big area of dissipation, can in limited volume, realize the good heat radiating of light fixture, and then solve the heating problem of High Power LED light fixture.The axis of the radiating fin of this radiator and heat carrier is an angle in addition, makes the irradiating angle that is installed on the light that the light emitting diode module on the radiator sends towards the certain orientation beat, thereby satisfies the illumination needs of user's specific direction.

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 the three-dimensional enlarged diagram of the radiator among Fig. 2.

The specific embodiment

Please refer to Fig. 1-2, the utility model led lamp comprises a lamp socket 10, a radiator 20 that is connected with this lamp socket 10 and some being sticked in three light emitting diode module 30 of this radiator 20 peripheries.

Lamp socket 10 comprises a crown top of burner 12, be connected on this crown top of burner 12 one first lid 14 and with one second lid 16 of these first lid, 14 make-ups.This crown top of burner 12 is a standard thread crown top of burner, adapts to the common formula lamp holder that screws togather.This first lid 14 is a bowl bodies of being made by plastic material, and it comprises a taper connection portion (indicating) and the one first bowl of wall 142 that is connected with this connecting portion that the bottom is connected with the crown top of burner 12.This first bowl of wall 142 is a bore uniform circular body, and its upper end forms an opening, and this first bowl of wall 142 evenly offers three installing holes 1420 at the inwall periphery of opening part, is used for supplying screw rod spare (figure does not show) thereby passes with second lid 16 screwing togather.Evenly offer some air vents 144 on this first bowl of wall 142.

This second lid 16 is an inversion bowl bodies of being made by plastic cement or metal material, and it comprises an annular joint portion 160 and the one second bowl of wall 162 that is connected with this joint portion 160.The diameter of this joint portion 160 is slightly less than the diameter of the crown top of burner 12, forms screw thread 1600 on the inwall of this joint portion 160 and is used for being connected with the bottom of radiator 20.The bore of the first half that this second bowl of wall 162 is connected with this joint portion 160 increases from top to bottom gradually, the first half of this second bowl of wall 162 evenly offers and the corresponding some perforation 164 of the number of light emitting diode module 30, and these perforation 164 are passed for the source line group that connects light emitting diode module 30 (figure does not show); These second bowl of wall 162 the latter half is bore uniform circular body, the opening of its openings of sizes and first lid 14 is suitable, evenly offering some passages 166 on this ring bodies enters in the space of first and second lid 14,16 formation for air-flow, and this second bowl of wall 162 evenly is provided with three screws (figure does not show) at the inwall periphery of opening, and these screws are corresponding with the installing hole 1420 of first lid 14 respectively to combine this first and second lid 14,16 to cooperate with the screw rod spare that passes this installing hole 1420.The space that this first and second lid 14,16 is combined together to form can ccontaining this led lamp electron rectifier devices such as (figure do not show).

Please also refer to Fig. 3, radiator 20 is made into integration by the good material of heat conductivility such as metal material such as aluminium, copper or its alloy.This radiator 20 comprises the heat carrier 22 of a tubular, and there is a through hole 25 at these heat carrier 22 centers.The outer wall of this heat carrier 22 radially outward is extended with some Thermal Arms 24 radially along it, and these Thermal Arms 24 distribute symmetrically about the central axis of this heat carrier 22.Each Thermal Arm 24 have one along heat carrier 22 width and radially along the axial length of heat carrier 22, the width that Thermal Arm 24 footpaths make progress is increased to the bottom gradually by the top of heat carrier 22, also promptly increases gradually from top to bottom along the axis direction of heat carrier 22.The length of each Thermal Arm 24 on axially is identical with the length of heat carrier 22, also is that Thermal Arm 24 extends axially the outer wall that runs through whole heat carrier 22.Thereby radiator 20 integral body are up-small and down-big stage body profile.The quantity of the quantity respective leds module 30 of these Thermal Arms 24, thus in different embodiment, can be different quantity, and be three Thermal Arms 24 of corresponding three light emitting diode module 30 in the present embodiment.Each Thermal Arm 24 is vertically extended some to radiating fin 240 by its both sides, all about Thermal Arm 24 symmetries of correspondence, and the length of these radiating fins 240 is increased to the free end direction gradually by the root of Thermal Arm 24 to radiating fin 240 for each.Each radiating fin 240 all is inclined to set with heat carrier 22, so forms an angle between the axis of each radiating fin 240 and heat carrier 22.The terminal of each Thermal Arm 24 all is connected with outermost radiating fin 240 inner surfaces, so the outer surface of each Thermal Arm 24 outermost a pair of radiating fin 240 is a smooth surfaces.The bottom of this heat carrier 22 extends the connecting portion 28 that formation one is hollow tubular downwards, and the periphery of this connecting portion 28 is provided with screw thread, thereby can be screwed with the joint portion 160 of second lid 16 so that radiator 20 is installed on the lamp socket 10.

Refer again to Fig. 2, each light emitting diode module 30 comprises a strip circuit board 32, and the shape size of this circuit board 32 is suitable with the outermost radiating fin 240 of radiator 20, and several light-emitting diodes 34 are installed on this circuit board 32 side by side.

This led lamp is when assembling, and screw rod spare passes the installing hole 1420 of first lid 14 and the screwhole spiro bonding of second lid 16, and first and second lid 14,16 is combined.The connecting portion 28 of the bottom of radiator 20 is fixedlyed connected with the joint portion 160 on second lid 16.Light emitting diode module 30 be sticked each of radiator 20 to outermost radiating fin 240 on.Can fill heat-conducting medium between light emitting diode module 30 and the corresponding radiating fin 240, to increase the capacity of heat transmission between them as heat-conducting glue and so on.

This led lamp in use, light emitting diode module 30 is transmitted to the heat that comes out on the radiating fin 240 that is in contact with it, and further evenly is delivered on the entire radiator 20 again.The outer wall of the heat carrier 22 of this radiator 20, Thermal Arm 24 and outer-finned 240 directly contact with ambient air heat is dispersed in the ambient air and go.And the through hole 25 in the heat carrier 22 of radiator 20 is communicated with the space of first and second lid 14,16 formation and form a current path, air can be entered from the air vent 144,166 of this first, second lid 14,16, be heated with its inner surface heat exchange in heat carrier 22, last via through holes 25 flows out takes away heat again; Perhaps when this led lamp and opposite location shown in Figure 1 were placed, air can enter from the bottom of heat carrier 22, and the through hole 25 through heat carrier 22 in is taken away heat from passage 144,166 outflows of this first, second lid 14,16 then.Radiator 20 compact conformations of this led lamp, has bigger area of dissipation again, can strengthen airflow effectively and strengthen the area that radiator 20 contacts with air-flow with the current path that lamp socket 10 forms circulation in this radiator 20 simultaneously, thereby well solve the heating problem of this High Power LED module 30.

Because of light emitting diode module 30 is subjected to the restriction of certain irradiating angle, the wide vertical line that all is distributed in light-emitting diode 34 that each light-emitting diode 34 sends is in the bullet scope of center line.The radiating fin 240 and the heat carrier 22 of the radiator 20 in the utility model are inclined to set, make the light emitting diode module that is sticked on outermost radiating fin 240 30 and the lengthwise bearing of trend of heat carrier 22 that certain included angle be arranged, so the irradiating angle of light emitting diode module 30 when vertically being provided with mutually specific energy to beat above the horizon, its irradiated area towards the top of led lamp is increased, and can eliminate the irradiation blind area that is present in the led lamp top when light emitting diode module 30 vertically is provided with.This set of this radiating fin 240 has reduced the unwanted irradiation light towards the led lamp bottom of user, and increased irradiation light towards the led lamp top, can satisfy the illumination needs of user under this angle, improve the utilization rate of light fixture light, made it more appropriate to room lighting.

Claims

1. led lamp, it comprises a lamp socket, a radiator that is connected with this lamp socket and is installed on some light emitting diode module on this radiator, described radiator comprises that one has the heat carrier of central axis and places some radiating fins of heat carrier periphery, and it is characterized in that: the axis of described radiating fin and heat carrier is an angle.

2. led lamp as claimed in claim 1 is characterized in that: described light emitting diode module posts on described radiating fin.

3. led lamp as claimed in claim 1, it is characterized in that: described heat carrier is tubular, and its outer wall extends some Thermal Arms that distribute symmetrically along its axis, the radial width of described Thermal Arm is reduced to the other end by an end gradually along the axis direction of described heat carrier, and described radiating fin is formed at the both sides of Thermal Arm.

4. led lamp as claimed in claim 3 is characterized in that: the radial width of described Thermal Arm is reduced to the other end by the end near lamp socket gradually along the axis direction of heat carrier.

5. led lamp as claimed in claim 3, it is characterized in that: the radiating fin on the both sides of described Thermal Arm is perpendicular to described Thermal Arm and about described Thermal Arm symmetry, and the length of the radiating fin of each Thermal Arm the same side is increased progressively to the free end direction by the root of described Thermal Arm.

6. led lamp as claimed in claim 5 is characterized in that: the outer surface of the outermost a pair of radiating fin of described radiator is one to be used to post the plane of light emitting diode module.

7. as any described led lamp among the claim 3-6, it is characterized in that: described lamp socket comprise a standard crown top of burner, one first lid that is connected with the crown top of burner and with one second lid of the first lid make-up.

8. led lamp as claimed in claim 7 is characterized in that: described first lid and second lid are provided with some passages, and the inner chamber of described passage and described heat carrier forms a current path.

9. led lamp as claimed in claim 7 is characterized in that: the heat carrier bottom of described radiator extends to form a junction downwards, and described connecting portion is connected with second lid of lamp socket.