CN201844247U

CN201844247U - Light high-efficient radiating LED lamp

Info

Publication number: CN201844247U
Application number: CN201020550758XU
Authority: CN
Inventors: 毛有强
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2011-05-25
Anticipated expiration: 2020-09-30

Abstract

The utility model relates to a light high-efficient radiating LED lamp, in particular to a radiator used for an LED lamp. The light high-efficient radiating LED lamp comprises a radiator, the radiator comprises a substrate and at least one group of radiating components fixed on the substrate, each group of radiating component comprises a support and a plurality of radiating fins, each support is fixed on the substrate and is in heat conduction connection with the substrate, the radiating fins are fixed on each support and is in heat conducting connection with the support, and further the radiating fins are parallelly fixed on each support at intervals from top to bottom. The light high-efficient radiating LED lamp is large in radiating area and fine in radiating effect, has the prolonged service life, and resolves problems that an existing LED lamp which adopts radiating bars is smaller in surface area and not ideal in radiating effect, the service life of the LED lamp is affected, and the like.

Description

The lightweight high-efficiency heat radiating LED lamp

Technical field

The utility model relates to a kind of lightweight high-efficiency heat radiating LED lamp, relates in particular to a kind of radiator of the LED of being used for light fixture.

Background technology

LED is applied in various occasions as a kind of novel illumination light source just more and more widely with outstanding advantages such as its energy-saving and environmental protection, luminous efficiency height, life-span length.Adopt high-power LED light source to be applied in and can be used as large-scale light fixture use such as street lamp, wall lamp in the light fixture now.But great power LED produces a large amount of heats when work, if untimely distributing, then can make LED owing to high temperature suffers damage, influence service life, owing to use very complicated at the environment of outdoor lighting, need to reserve bigger area of dissipation, realize better radiating effect, could guarantee the height reliability that LED does down.Adopt conventional heat dissipation technology to improve and reserve area of dissipation, need to increase and use a large amount of metal materials, thereby make light fixture weight very big, influenced the security of light fixture.

CN101373061A discloses a kind of LED light fixture; comprise heat-radiating substrate, led light source assembly, light permeable protection; the led light source assembly comprises several LED and circuit radiating bottom plate; led light source assembly and heat-radiating substrate are fixedly connected and conduct heat to heat-radiating substrate by the circuit radiating bottom plate; light permeable protection is tightly connected mutually with heat-radiating substrate, and the back side of heat-radiating substrate is provided with several heat-radiating rod that is arranged in array.There are the following problems for above-mentioned LED light fixture: the surface area of heat-radiating rod is less, is difficult to guarantee the height reliability of LED light fixture under abominable temperature environment, if increase cooling surface area, then needing to add large substrates increases heat-radiating rod, strengthens the weight of light fixture.

Summary of the invention

The utility model purpose is to provide a kind of area of dissipation big, good heat dissipation effect, can prolong the LED light fixture lightweight high-efficiency heat radiating LED lamp in service life, having solved existing cloth LED light fixture adopts the surface area of heat-radiating rod existence less, radiating effect is undesirable, has influenced the problems such as service life of LED light fixture.

Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: it comprises radiator, described radiator comprises substrate and at least one group of radiating subassembly that is fixed on the substrate, every group of radiating subassembly comprises supporter and some fin, described supporter is fixed on the substrate and forms heat conduction with substrate and is connected, and described some fin are fixed on the supporter and form heat conduction with supporter and are connected; Described some fin parallel interval from top to bottom are fixed on the supporter.Radiating subassembly of the present utility model adopts the form of fixing some fin on supporter, the heat that led chip produces is passed to substrate earlier, be passed to supporter via substrate again, supporter is passed to most of heat on the fin again, make the surface area of supporter and the surface area of fin all play thermolysis, every group of radiating subassembly can also be provided with a plurality of supporters as required in addition, increase the heat conduction of fin and substrate, thereby improved the area of dissipation of radiator greatly, improve the radiating effect of LED light fixture, prolonged the service life of LED light fixture.Fin parallel with substrate surface and from top to bottom fixed interval on supporter, thereby can form the heat dissipation channel parallel with substrate surface, be convenient to enter in the heat dissipation channel from the wind of all directions, the cross-ventilation in the enhance heat passage, thus improve radiating effect.

As preferably, described supporter is the inner tubing hot-pipe that is provided with cavity, described tubing hot-pipe comprises the body with internal cavities, be filled with capillary structure in the internal cavities of body and meet the easily liquid medium of gasification of heat, the lower end of body is condensation end and is embedded in substrate that described fin is distributed in body and is positioned at the above position of substrate.Because vacuum in the body, liquid medium of being filled such as pure water add portions additive or its body fluid body easily gasifies, LED or other electronic component work heat that produces and the heat that is collected at substrate are taken away in liquid gasification after the body lower end absorbs heat, rise and condensation gradually in liquid medium gasification back, the heat transferred fin is distributed via fin, condensed liquid medium is through getting back to the body lower end under capillary structure effect and the gravity effect, thereby said process constantly circulates and reduces the node operating temperature of LED or other electronic components, realizes the good heat radiating of LED light fixture.Described body is the U type, and the turn of bilge of U type body is the body lower end, and fin is distributed on two vertical portions of U type body, adopts U type body can have two condensation ends, thus the better thermal conduction effect of tool cloth; Or described body is the L type, and the horizontal part of L type body is the body lower end, and fin is distributed on the vertical portion of L type body.The liquid medium of meeting the easy gasification of heat is a heat pipe liquid medium commonly used.

As preferably, the same position of every fin is provided with at least one or a circle air-vent, thereby forms a convection channel that makes progress, and produces stack effect, increases new air convection channel, further enhance heat effect.

As preferably, be provided with the combination that a circle and supporter closely contact at the upper surface of every fin and the binding site of supporter and/or lower surface position, described combination and fin integrative-structure, thus can strengthen the heat conductivility of fin and supporter.

As preferably, as preferably, both are integrative-structures at least among described fin, supporter, the substrate three, thereby reduce thermal resistance, improve radiating effect.

As preferably, described supporter is formed with top-down cavity, and the cavity inwall can be used as cooling surface area, further the enhance heat effect.

As preferably, the hypomere of described supporter is provided with horizontal cross-ventilation hole, thereby can strengthen cross-ventilation, and the draining blowdown improves radiating effect.

As preferably, described substrate is the plate-type heat-pipe that inside is provided with cavity, and cavity is filled with the easily liquid medium of gasification of capillary structure, support member and chance heat, and substrate top is the heat pipe condensation end, and the substrate bottom is the heat pipe evaporation ends.Liquid medium absorbs in the substrate bottom and gasifies after the LED lamp conducts the heat of coming, thereby reduce the temperature of substrate bottom, rise and condensation gradually in liquid medium gasification back, distribute for fin via fin the supporter and the further conduction on heat transferred substrate top, condensed liquid medium is through getting back to the body lower end under capillary structure effect and the gravity effect, thereby said process constantly circulation is realized the good heat radiating of LED light fixture to the substrate cooling.Wherein, plate-type heat-pipe can be strengthened the heat radiation cooling effect of radiator to the LED light fixture as substrate, thereby prolong the service life of LED light fixture.

As preferably, described radiator is made of the array radiating subassembly, and described array radiating subassembly is dot matrix and arranges.Radiating subassembly adopts dot matrix to arrange, no matter upper surface of base plate or substrate side surfaces are set, and the passage that forms between radiating subassembly all plays the forced convertion radiating effect that strengthens wind.

Therefore, it is big to the utlity model has area of dissipation, and good heat dissipation effect can prolong characteristics such as LED light fixture service life.

Description of drawings

Fig. 1 is the plan structure schematic diagram of the utility model first embodiment;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the plan structure schematic diagram of the utility model second embodiment;

Fig. 4 is the sectional structure schematic diagram of the utility model the 3rd embodiment.

The specific embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1: light-duty LED light fixture comprises radiator, as depicted in figs. 1 and 2, radiator comprises substrate 1 and is fixed on the many groups of radiating subassemblies 2 that are matrix distribution of substrate 1 upper surface, substrate 1 is a solid sheet metal, every group of radiating subassembly 2 comprises supporter 3 and multi-disc fin 4, the cross section of supporter 3 is rounded, supporter 3 is vertically fixed on the upper surface of substrate 1 and forms heat conduction with substrate by its lower end and is connected, multi-disc fin 4 vertical with the short transverse of supporter 3 and from top to bottom parallel interval be fixed on the supporter 3, be one of the forming structure and form heat conduction with supporter and is connected of fin 4 and supporter 3, the same position of every fin is provided with one and encloses air-vent 5.

Embodiment 2: light-duty LED light fixture comprises radiator, as shown in Figure 3, radiator comprises substrate 1 and is fixed on the many groups of radiating subassemblies 2 that are matrix distribution of substrate 1 upper surface, substrate 1 is the plate-type heat-pipe that inside is provided with cavity 9, cavity 9 is surrounded by upper shell 7 and lower house 8 and forms, and is supported by support member 11 between upper shell 7 and the lower house 8, and cavity 9 is filled with capillary structure 10 and water, substrate top is that upper shell 7 is the heat pipe condensation end, and the substrate bottom is that lower house is the heat pipe evaporation ends.Every group of radiating subassembly 2 comprises supporter 3 and multi-disc fin 4, the cross section of supporter 3 is rounded, supporter 3 is vertically fixed on the upper surface of substrate 1 and forms heat conduction with substrate by its lower end and is connected, multi-disc fin 4 vertical with the short transverse of supporter 3 and from top to bottom parallel interval be fixed on the supporter 3, be one of the forming structure and form heat conduction with supporter and is connected of fin 4 and supporter 3, the same position of every fin is provided with one and encloses air-vent 5.

Embodiment 3: light-duty LED light fixture comprises radiator, as shown in Figure 4, radiator comprises substrate 1 and is fixed on the many groups of radiating subassemblies 2 that are matrix distribution of substrate 1 upper surface, substrate 1 is a solid sheet metal, every group of radiating subassembly 2 comprises supporter 3 and multi-disc fin 4, the cross section of supporter 3 is rounded, supporter 3 is vertically fixed on the upper surface of substrate 1 and forms heat conduction with substrate by its lower end and is connected, multi-disc fin 4 vertical with the short transverse of supporter 3 and from top to bottom parallel interval be fixed on the supporter 3, be one of the forming structure and form heat conduction with supporter and is connected of fin 4 and supporter 3, the same position of every fin is provided with one and encloses air-vent 5.

Supporter 3 is the inner tubing hot-pipe that is provided with cavity, tubing hot-pipe comprises the body 13 with internal cavities 12, be filled with capillary structure 14 in the internal cavities 12 of body 13 and meet the easily liquid medium of gasification of heat, the lower end of body is condensation end and is embedded in substrate 1, body 13 is the U type, the turn of bilge of U type body is the body lower end, and fin 4 is distributed on two vertical portions of U type body.

Protection domain of the present utility model is not limit and the foregoing description; substrate of the present utility model can be a solid sheet metal; the utility model also can use in the heat dissipation technology of other electronic component; the utility model is each novel characteristics and combination of features; and the radiator with feature of the present utility model can cloth in a LED light fixture more than two; be distributed in the diverse location of light fixture respectively, such as in the both sides of light fixture or the like.

Claims

1. lightweight high-efficiency heat radiating LED lamp, comprise radiator, it is characterized in that: described radiator comprises substrate and at least one group of radiating subassembly that is fixed on the substrate, every group of radiating subassembly comprises supporter and some fin, described supporter is fixed on the substrate and forms heat conduction with substrate and is connected, and described some fin are fixed on the supporter and form heat conduction with supporter and are connected; Described some fin parallel interval from top to bottom are fixed on the supporter.

2. lightweight high-efficiency heat radiating LED lamp according to claim 1, it is characterized in that described supporter is the inner tubing hot-pipe that is provided with cavity, described tubing hot-pipe comprises the body with internal cavities, be filled with capillary structure in the internal cavities of body and meet the easily liquid medium of gasification of heat, the lower end of body is condensation end and is embedded in substrate that described fin is distributed in body and is positioned at the above position of substrate.

3. lightweight high-efficiency heat radiating LED lamp according to claim 2 is characterized in that described body is the U type, and the turn of bilge of U type body is the body lower end, and fin is distributed on two vertical portions of U type body.

4. lightweight high-efficiency heat radiating LED lamp according to claim 2 is characterized in that described body is the L type, and the horizontal part of L type body is the body lower end, and fin is distributed on the vertical portion of L type body.

5. according to any described lightweight high-efficiency heat radiating LED lamp of claim 1-4, it is characterized in that: the same position of every fin is provided with at least one air-vent.

6. according to any described lightweight high-efficiency heat radiating LED lamp of claim 1-4, it is characterized in that: be provided with combination, described combination and the fin integrative-structure that a circle and supporter closely contact at the upper surface of every fin and the binding site of supporter and/or lower surface position.

7. according to any described lightweight high-efficiency heat radiating LED lamp of claim 1-4, it is characterized in that having both at least among described fin, supporter, the substrate three is integrative-structures.

8. according to any described lightweight high-efficiency heat radiating LED lamp of claim 1-4, it is characterized in that described supporter is formed with top-down cavity.

9. according to any described lightweight high-efficiency heat radiating LED lamp of claim 1-4, it is characterized in that the hypomere of described supporter is provided with horizontal cross-ventilation hole.

10. lightweight high-efficiency heat radiating LED lamp according to claim 1, it is characterized in that described substrate is the plate-type heat-pipe that inside is provided with cavity, cavity is filled with the easily liquid medium of gasification of capillary structure, support member and chance heat, and substrate top is the heat pipe condensation end, and the substrate bottom is the heat pipe evaporation ends.

11. lightweight high-efficiency heat radiating LED lamp according to claim 1 is characterized in that described radiator is made of the array radiating subassembly, described array radiating subassembly is dot matrix and arranges.