CN201836669U

CN201836669U - LED lamp

Info

Publication number: CN201836669U
Application number: CN2010202380430U
Authority: CN
Inventors: 黄柱联
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2011-05-18
Anticipated expiration: 2020-06-25

Abstract

The utility model discloses an LED lamp, which comprises a lamp socket assembly, a graphite radiator, an LED metal substrate, an LED chip and housing assembly arranged on the LED metal substrate. The LED metal substrate is fixed to the lamp socket assembly by a locking bolt assembly sequentially passing through the central part of the LED metal substrate and the graphite radiator and connecting with the lamp socket assembly. The thermal source at the back side of the LED metal substrate is in close contact with the front end face of the graphite radiator.Due to the close contact between the graphite radiator and the metal substrate, the LED lamp has a good heat radiation effect. Meanwhile, the two ends of the locking bolt assembly are respectively fixed to the lamp socket assembly and the LED metal substrate after passing through the central part of the graphite radiator, so that the LED lamp has the advantages of simple and reasonable structure, convenient installation and reliable usage. According to the utility model, a light fixture is combined with a power supply, which can not only be used separately but also be used in conjunction with other housings by arranging on the housings.

Description

A kind of LED light fixture

Technical field

The utility model relates to a kind of LED illuminating lamp, especially high-power LED lighting.

Background technology

Power consumption is little, the advantage of long service life because LED has, and is extensive use of in a lot of fields, especially uses in light fixture.

At present, LED generally can only use in the small-power light fixture, comprises ornament lamp etc., and can't realize commercialization in powerful lighting, and as street lamp etc., the big more light efficiency of power is low more, and the life-span is short more, and tracing it to its cause is because heat dissipation problem.That is to say that the key problem of light source is still dispelled the heat at present, it is bad to dispel the heat, and can cause the LED light decay to be accelerated, and light efficiency reduces, the lost of life, and reliability reduces, and maintenance cost raises.

Certainly, some high-power LED light fixtures are also arranged on the market in exemplary use, but, usually the radiator structure of these products is very complicated, includes bulky aluminium alloy heat radiator, so not only expends a large amount of resources, difficulty is installed, and, still be difficult to real effectively the solution by these structures at present and be higher than 5W, the heat dissipation problem as 50W or above high-power LED illuminating lamp still causes shorten the service life of these light fixtures.

In addition, also there are some to adopt the graphite radiating material using as the LED light fixture of radiator, it has the advantage that radiating rate is fast, efficient is high, can improve the service life of LED greatly, especially service life of great power LED, but the structure of the LED light fixture of these use graphite radiating bodies is still unreasonable at present, and result of use is still waiting to improve.

Summary of the invention

In order to solve the above problems, the purpose of this utility model is to provide a kind of rational in infrastructure, good heat dissipation effect, assembles LED light fixture simply and easily.

The technical scheme that the invention for solving the technical problem adopted is:

A kind of LED light fixture, comprise lamp base component, graphite radiating body, LED metal substrate, be arranged at led chip and cover member on the LED metal substrate, the LED metal substrate is fixed on the lamp base component by the clamping screw assembly that passes its central part, graphite radiating body successively and be connected to lamp base component, and the thermal source place, the back side of LED metal substrate closely contacts with the front end face of graphite radiating body.

Further, the circumferential outer surface of described graphite radiating body exposes.

Further, described cover member and LED metal substrate are connected and fixed, and cover the front end of led chip, and described cover member comprises outer outlet body, installing ring and connecting ring, lock between connecting ring and the LED metal substrate, outer outlet body is threaded on the connecting ring by installing ring.

Further, the radiator air vent that is arranged at the graphite radiating body back side is arranged on the described lamp base component.

Further, on the rear end face of described graphite radiating body the heat radiation groove is arranged.

Further, described heat radiation groove is concentric a plurality of ring-types hole groove.

Further, the height of the upper surface of described ring-type hole groove is reduced gradually by middle mind-set edge.

Further, described graphite radiating body is a revolving body.

Further, described lamp base component comprises connector, lampholder shell, power supply apparatus and connecting plate, connector is fixed on the top of lampholder shell, power supply apparatus is installed in the inner chamber of lampholder shell, outer cover of lamp holder is connected with the clamping screw assembly by the connecting plate that installs and fixes with it, is electrically connected between power supply apparatus and the led chip.

Further, the clamping screw assembly comprises hitching post and the upper and lower clamping screw of being with cable hole, hitching post is inserted in the through hole of graphite radiating body, its two ends install and fix with lamp base component and LED metal substrate respectively by upper and lower clamping screw, and the power input line of led chip passes from this cable hole.

The beneficial effects of the utility model are: because this LED lighting adopts the mode that closely contacts between graphite radiating body and the metal substrate, has better heat radiating effect, it is simple in structure, in light weight, volume is little, easily, be easy to the temperature of led chip is remained on below 60-70 ℃, make the operate as normal of high-power LED illuminating lamp, result of use and service life can not be affected because of heat radiation, go for 10W, 50W, even the above high-power LED illuminating lamp of 50W, and be by after the clamping screw assembly is passed graphite radiating body central part, the structure that two ends install and fix with lamp base component and LED metal substrate respectively, it is simple and reasonable, and it is very convenient to install, use reliable, light fixture of the present utility model and power supply combination can be used separately, also can be used on other housing by assembly.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the schematic appearance of the utility model light fixture;

Fig. 2 is a cutaway view of the present utility model;

Fig. 3 is a fractionation structural representation of the present utility model.

The specific embodiment

With reference to Fig. 1-Fig. 3, a kind of LED light fixture of the present utility model, comprise lamp base component 1, graphite radiating body 2, LED metal substrate 3, be arranged at led chip 4 and cover member 5 on the LED metal substrate 3, led chip 4 can be directly or is arranged at indirectly on this LED metal substrate, as can directly being encapsulated on the substrate, or be arranged on this metal substrate by the additional metals substrate, be coated with sealing on the led chip, in the sealing fluorescent material etc. can be arranged, LED metal substrate 3 is by passing its central part successively, the clamping screw assembly 6 that graphite radiating body 2 is connected to lamp base component 1 is fixed on the lamp base component 1, and the thermal source place, the back side of LED metal substrate 3 closely contacts with the front end face of graphite radiating body 2.

Wherein, led chip can have a plurality of, and led chip is around being arranged on the metal substrate, be specifically as follows along being circular layout, but be not limited to annulus, side's ring or other loopful around or semi-ring around shape.

Described metal substrate can have the metal material of heat sinking function for aluminium base, copper pedestal etc.

This graphite radiating body is to be cut or straight forming forms by the graphite radiating material, and that the preparation method of graphite radiating material has is multiple, can adopt China the related technology of patent publication us and make, these technology comprise that being documented in application number is 200510054362.X, 200910061901.0,200910061323.0 Deng the preparation method in the patent documentation, in addition, this graphite radiating material comprises that also the technology of the applicant in the patent of invention of being applied for not long ago is obtained, graphite granule is wherein arranged to a certain extent in order, form microchannel carbon pipe, produce stack effect, heat dispersion is good, heat transfer coefficient is higher than metal materials such as fine copper, reaches as high as 2156W/ (Km ²), be applicable to that making various radiating pieces, particularly electronics high-speed motion produces dissipation of heat energy, sets forth no longer one by one at this.

Wherein, described graphite radiating body 2 is preferably revolving body, and is rational in infrastructure, manufactures simple.In addition, as preferred implementation, the circumferential outer surface of described graphite radiating body 2 exposes, and does not have blocking of other housing, thereby the heat that makes the graphite radiating body be absorbed from the LED metal substrate can distribute from outer surface faster, strengthens its radiating effect.

Further, the radiator air vent 10 that is arranged at graphite radiating body 2 back sides is arranged on the described lamp base component 1, promote the circulation of air, thereby avoid the heat generation of graphite radiating body upper surface to gather, promote its radiating effect.For further improving radiating effect, heat radiation groove 20 is arranged on the rear end face of described graphite radiating body 2, described heat radiation groove 20 can be preferably concentric a plurality of ring-types hole groove.

In addition, the height of the upper surface of described ring-type hole groove is reduced gradually by middle mind-set edge, and the heat that the top is distributed forms vortical flow, quickens heat radiation.

And described lamp base component 1 comprises connector 11, lampholder shell 12, power supply apparatus 13 and connecting plate 14, connector 11 is fixed on the top of lampholder shell 12, power supply apparatus 13 is installed in the inner chamber of lampholder shell 12, outer cover of lamp holder 12 is connected with clamping screw assembly 6 by the connecting plate 14 that installs and fixes with it, be electrically connected between power supply apparatus 13 and the led chip 4, on the connector above the power supply apparatus 13 11, also can offer power supply heat sinking hole 15 simultaneously.

Power supply apparatus 13 can be in the following way with the Wiring structure that is electrically connected between the led chip 4, clamping screw assembly 6 comprises the hitching post 60 of being with cable hole 65 and last, following

clamping screw

61,62, hitching post 60 is inserted in the through hole 22 of graphite radiating body 2, hitching post 60 axially is provided with protruding card article 66, through hole 22 has corresponding draw-in groove, can further prevent the rotation of light fixture assembling back graphite radiating body 2, hitching post 60 is by last, following

clamping screw

61,62 install and fix with lamp base component 1 and LED metal substrate 3 respectively, the power input line of led chip 4 passes from this cable hole 65, is connected with power supply apparatus 13.

Further, described cover member 5 is connected and fixed with LED metal substrate 3, covers the front end of led chip 4.Wherein, described cover member 5 specifically can comprise outer outlet body 50, installing ring 51 and connecting ring 52, locking between connecting ring 52 and the LED metal substrate 3, being specially on the periphery of connecting ring 52 has connecting hole 54, and corresponding screw 35 is arranged on LED metal substrate 3, and both connect between the hole and connect by stove bolt 56 lockings, there is external screw thread in the outside of connecting ring 52, there is internal thread the inboard of installing ring 51, is threaded on the connecting ring 52 by installing ring 51, thus the fixed installation of realization outer outlet body 50.

When above-mentioned LED light fixture is worked, the heat that led chip produced is delivered on the metal substrate, because metal substrate contacts with the graphite radiating body, thereby can be delivered on the graphite radiating body fast by its heat that gathers, simultaneously, the graphite radiating body has good radiating effect, the temperature of led chip can be remained on below 60-70 ℃ easily, make the high-power LED illuminating lamp operate as normal, result of use and service life can not be affected because of heat radiation.

Certainly, the invention is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection domain of the present utility model.

Claims

1. LED light fixture, it is characterized in that: comprise lamp base component (1), graphite radiating body (2), LED metal substrate (3), be arranged at led chip (4) and cover member (5) on the LED metal substrate (3), LED metal substrate (3) is fixed on the lamp base component (1) by the clamping screw assembly (6) that passes its central part, graphite radiating body (2) successively and be connected to lamp base component (1), and the thermal source place, the back side of LED metal substrate (3) closely contacts with the front end face of graphite radiating body (2).

2. a kind of LED light fixture according to claim 1 is characterized in that: the circumferential outer surface of described graphite radiating body (2) exposes.

3. a kind of LED light fixture according to claim 2, it is characterized in that: described cover member (5) is connected and fixed with LED metal substrate (3), cover the front end of led chip (4), described cover member (5) comprises outer outlet body (50), installing ring (51) and connecting ring (52), locking between connecting ring (52) and the LED metal substrate (3), outer outlet body (50) is threaded on the connecting ring (52) by installing ring (51).

4. a kind of LED light fixture according to claim 1 is characterized in that: the radiator air vent (10) that is arranged at graphite radiating body (2) back side is arranged on the described lamp base component (1).

5. according to claim 1 or 4 described a kind of LED light fixtures, it is characterized in that: heat radiation groove (20) is arranged on the rear end face of described graphite radiating body (2).

6. a kind of LED light fixture according to claim 5 is characterized in that: described heat radiation groove (20) is concentric a plurality of ring-types hole groove.

7. a kind of LED light fixture according to claim 6 is characterized in that: the height of the upper surface of described ring-type hole groove is reduced gradually by middle mind-set edge.

8. according to claim 1,6 or 7 described a kind of LED light fixtures, it is characterized in that: described graphite radiating body (2) is a revolving body.

9. a kind of LED light fixture according to claim 1, it is characterized in that: described lamp base component (1) comprises connector (11), lampholder shell (12), power supply apparatus (13) and connecting plate (14), connector (11) is fixed on the top of lampholder shell (12), power supply apparatus (13) is installed in the inner chamber of lampholder shell (12), outer cover of lamp holder (12) is connected with clamping screw assembly (6) by the connecting plate (14) that installs and fixes with it, is electrically connected between power supply apparatus (13) and the led chip (4).

10. a kind of LED light fixture according to claim 1, it is characterized in that: clamping screw assembly (6) comprises the hitching post (60) and the upper and lower clamping screw (61,62) of band cable hole (65), hitching post (60) is inserted in the through hole (22) of graphite radiating body (2), its two ends install and fix with lamp base component (1) and LED metal substrate (3) respectively by upper and lower clamping screw (61,62), and the power input line of led chip (4) passes from this cable hole (65).