CN201187757Y

CN201187757Y - LED light fitting

Info

Publication number: CN201187757Y
Application number: CNU2008200430207U
Authority: CN
Inventors: 樊邦弘
Original assignee: Heshan Lide Electronic Enterprise Co Ltd
Current assignee: Heshan Lide Electronic Enterprise Co Ltd
Priority date: 2008-01-17
Filing date: 2008-01-17
Publication date: 2009-01-28
Anticipated expiration: 2018-01-17

Abstract

The utility model discloses an LED lamp which comprises an outer casing, a bottom casing, an aluminum base plate installed at the inner side of the bottom casing, a plurality of LEDs installed on the aluminum base plate and a plurality of light distribution cups, wherein, at least one LED, one transmitting cover arranged at the inner side of the bottom casing of a sealing cover and one power box installed at the rear end of a outer casing are collocated in each light distribution cup. The LED lamp is characterized in that a heat radiation device which is made of heat conducting material, installed at the outer side of the bottom casing and at the inner side of the outer casing and tightly contacted with the aluminum base plate is also included, and the heat radiation plate is composed of a bottom plate, heat conductive pipes and heat radiating fins arranged on the bottom plate as well as heat radiating fins arranged on the heat conductive pipes. The heat conductive pipes adopt U shapes and are symmetrically distributed at both sides of the rectangular bottom plate, the U-shaped arc part is welded on the bottom plate, the open end of the U shape extends out of the bottom plate, and the long plate-shaped heat radiating fins are uniformly inserted and welded on both terminals of the open end at intervals. The cross sections of the heat radiating fins on the bottom plates present L shapes. A device which is connected with the LED lamp and used for loading the LED lamp is also included.

Description

A kind of LED light fixture

Affiliated technical field

The utility model relates to a kind of light fixture, especially a kind of LED light fixture.

Background technology

The existing device form that is used to dispel the heat is various, mode also has nothing in common with each other, for example circulated water-cooled, air-cooled or the like, adopt these existing modes, its heat abstractor volume all can be done greatlyyer usually, heavier, and cost is also than higher, and these all are unsuitable for as giving the heat radiation of LED light fixture, especially is unsuitable for as dispelling the heat to the bigger LED light fixture of power, because such LED light fixture is made up of a plurality of LED array of light bulbs usually, it needs area of dissipation wider, if adopt circulated water-cooled, air-cooled these existing modes that waits, its heat abstractor volume can do more, weight is heavier, and cost is higher.The LED bulb is as light source, the temperature of its life-span when luminous is directly relevant, if the temperature of led chip is higher when luminous, then its light decay is just very fast, when light decay acquires a certain degree, LED bulb luminous just very faint, the LED bulb will wear out, that is to say that the height of temperature influenced the short long of its service life when the LED bulb was luminous.Like this, as light source, in order to prolong its service life as far as possible, it is necessary that the LED bulb is dispelled the heat in good time effectively with the LED bulb.People are are also researching and developing effective and efficient manner and the device to LED light fixture heat radiation always.

Summary of the invention

The purpose of this utility model is in order to solve the problem of above-mentioned proposition, provides that a kind of volume is little, the LED light fixture of good heat dissipation effect, long service life.

To achieve these goals, the technical solution adopted in the utility model is a kind of LED light fixture, comprise shell, drain pan, be installed in the aluminium base of drain pan inboard, be installed in a plurality of LED and a plurality of luminous intensity distribution cup on the aluminium base, dispose at least one LED in each luminous intensity distribution cup, the diffuser of capping drain pan inboard and be installed in the power pack of outer casing back, it is characterized in that: the heat abstractor that constitutes by Heat Conduction Material that comprises also that be installed in the drain pan outside and shell inboard and an aluminium base closely contact, described heat abstractor is by base plate, be arranged on heat pipe and radiating fin on the base plate, the radiating fin that is arranged on the heat pipe is formed.

Described heat pipe contains the liquid that is used to absorb and conduct heat for the metal catheter of sealing in the pipe, described heat pipe has one at least, and every heat pipe has at least an end to stretch out outside base plate.

Described heat pipe is for " U " shape and have four.

Described base plate is a rectangle, and described heat pipe is symmetrically distributed in the both sides of base plate, and the arc part of " U " shape of heat pipe is welded on the base plate, and the openend of " U " shape stretches out outside base plate.

The described radiating fin that is arranged on the heat pipe is a plurality of, each fin is long slab shape and offers patchhole corresponding to openend the two poles of the earth of " U " shape of heat pipe, and this radiating fin interts evenly and at intervals and is welded on openend the two poles of the earth of " U " shape of above-mentioned heat pipe.

The cross section that the described radiating fin that is arranged on the base plate is a plurality of and each fin is L-shaped, and the welding of this radiating fin and base plate is fixed into the rectangle fins group, and the length of " L " shape holds outward that hull shape becomes opening.

Described heat abstractor closely contacts with aluminium base by base plate and is fixing.

Described power pack is installed on the base plate of outer casing back.

Also comprise a device that is used to carry the LED light fixture that is connected with described LED light fixture.

The utility model compared with prior art its beneficial effect has: since heat abstractor by base plate, be arranged on heat pipe and the radiating fin on the base plate, the radiating fin that is arranged on the heat pipe is formed, and all radiating fins all outward shell be formed with opening, be convenient to the cross-ventilation heat radiation, so the utility model volume is little, in light weight, good heat dissipation effect, can solve the heat dissipation problem of 200WLED light fixture.In environment temperature is below 35 degrees centigrade the time, and LED substrate aluminium base temperature is no more than 65 degrees centigrade.Can prolong LED light fixture service life like this.

Description of drawings

Fig. 1 is an outside drawing of the present utility model;

Fig. 2 is STRUCTURE DECOMPOSITION figure of the present utility model;

Fig. 3 is the schematic diagram of base plate sweating heat conduit of the present utility model;

Fig. 4 is the schematic diagram of the peripheral luminous intensity distribution cup of LED of the present utility model;

Fig. 5 is the structural representation that is arranged on the radiating fin on the base plate of the present utility model.

The specific embodiment

Followingly the utility model is further described with reference to accompanying drawing:

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of LED light fixture of the utility model, comprise shell 1, drain pan 2, be installed in the aluminium base 3 of drain pan 2 inboards, be installed in a plurality of LED4 and a plurality of luminous intensity distribution cup 5 on the aluminium base 3, dispose at least one LED4 in each luminous intensity distribution cup 5, the diffuser 6 of capping drain pan 2 inboards and be installed in the power pack 7 of shell 1 rear end, the heat abstractor 8 that constitutes by Heat Conduction Material that comprises also that be installed in drain pan 2 outsides and shell 1 inboard and an aluminium base 3 closely contact, described heat abstractor 8 is by base plate 81, be arranged on heat pipe 82 and radiating fin 83 on the base plate 81, the radiating fin 821 that is arranged on the heat pipe 82 is formed.Described heat pipe 82 contains the liquid that is used to absorb and conduct heat for the metal catheter of sealing in the pipe, described heat pipe 82 has one at least, and every heat pipe 82 has at least an end to stretch out outside base plate 81.Generally, for reaching better radiating effect, described heat pipe 82 is for " U " shape and have four.Described base plate 81 is a rectangle, and described heat pipe 82 is symmetrically distributed in the both sides of base plate 81, and the arc part of " U " shape of heat pipe 82 is welded on the base plate 81, and the openend of " U " shape stretches out outside base plate 81, as shown in Figure 3.The described radiating fin 821 that is arranged on the heat pipe 82 is a plurality of, each fin 821 offers patchhole for long slab shape and corresponding to openend the two poles of the earth of " U " shape of heat pipe 82, and this radiating fin 821 interts evenly and at intervals and is welded on openend the two poles of the earth of " U " shape of above-mentioned heat pipe 82.The described radiating fin 83 that is arranged on the base plate 81 is a plurality of and cross section each fin 83 is L-shaped, as shown in Figure 5.This radiating fin 83 is fixed into the rectangle fins group with base plate 81 welding, and the length of " L " shape holds outward that hull shape becomes opening, so that the cross-ventilation heat radiation.Heat abstractor 8 described in the utility model closely contacts with aluminium base 3 by base plate 81 and is fixing, and like this, the heat that is beneficial to that LED4 on the aluminium base 3 is sent conducts and dissipates.Described power pack 7 is installed on the base plate 81 of shell 1 rear end, and the heat that power supply and control section are produced does not have influence on LED4.The utility model also comprises a device that is used to carry the LED light fixture that is connected with described LED light fixture, and this device can be a support bar, so that as street lamp, also can be a supporting seat, so that as booth desk lamp tool.

Claims

1. LED light fixture, comprise shell, drain pan, be installed in the drain pan inboard aluminium base, be installed in the power pack that disposes the diffuser of at least one LED, capping drain pan inboard in a plurality of LED on the aluminium base and a plurality of luminous intensity distribution cup, each luminous intensity distribution cup and be installed in outer casing back, it is characterized in that: the heat abstractor that constitutes by Heat Conduction Material that comprises also that be installed in the drain pan outside and shell inboard and an aluminium base closely contact, described heat abstractor by base plate, be arranged on heat pipe and the radiating fin on the base plate, the radiating fin that is arranged on the heat pipe is formed.

2. LED light fixture according to claim 1 is characterized in that: described heat pipe contains the liquid that is used to absorb and conduct heat for the metal catheter of sealing in the pipe, described heat pipe has one at least, and every heat pipe has at least an end to stretch out outside base plate.

3. LED light fixture according to claim 1 and 2 is characterized in that: described heat pipe is for " U " shape and have four.

4. LED light fixture according to claim 3 is characterized in that: described base plate is a rectangle, and described heat pipe is symmetrically distributed in the both sides of base plate, and the arc part of " U " shape of heat pipe is welded on the base plate, and the openend of " U " shape stretches out outside base plate.

5. LED light fixture according to claim 4, it is characterized in that: the described radiating fin that is arranged on the heat pipe is a plurality of, each fin is long slab shape and offers patchhole corresponding to openend the two poles of the earth of " U " shape of heat pipe, and this radiating fin interts evenly and at intervals and is welded on openend the two poles of the earth of " U " shape of above-mentioned heat pipe.

6. LED light fixture according to claim 5, it is characterized in that: the cross section that the described radiating fin that is arranged on the base plate is a plurality of and each fin is L-shaped, the welding of this radiating fin and base plate is fixed into the rectangle fins group, and the length of " L " shape holds outward that hull shape becomes opening.

7. LED light fixture according to claim 6 is characterized in that: described heat abstractor closely contacts with aluminium base by base plate and is fixing.

8. LED light fixture according to claim 7 is characterized in that: described power pack is installed on the base plate of outer casing back.

9. LED light fixture according to claim 1 is characterized in that: also comprise a device that is used to carry the LED light fixture that is connected with described LED light fixture.