CN218544356U

CN218544356U - COB light source radiator

Info

Publication number: CN218544356U
Application number: CN202223170814.9U
Authority: CN
Inventors: 顾晓东
Original assignee: Acp Changzhou Heat Exchanger Co ltd
Current assignee: Acp Changzhou Heat Exchanger Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-02-28
Anticipated expiration: 2032-11-28

Abstract

The application relates to a COB light source radiator is used in lamps and lanterns heat dissipation technical field, and it is equipped with the mount including heat dissipation cover, heat dissipation cover top, is equipped with the liquid cooling subassembly on the mount for on the liquid cooling subassembly was located to the base plate of installation COB light source, the heat that the base plate that the liquid cooling subassembly absorbed and was used for installing the COB light source transmitted outwards gives off. The application has the following effects: increase the heat exchange area between COB light source and the radiator, derive the heat that the COB light source produced fast, promote the radiating efficiency.

Description

COB light source radiator

Technical Field

The application relates to the technical field of lamp heat dissipation, in particular to a COB light source radiator.

Background

COB light source is high power integrated area light source in the simple sense, and is a high light efficiency integrated area light source technology which directly pastes LED chips on the mirror surface with high light reflection rate. When the high-power COB light source emits light, part of energy is converted into heat, so that the temperature of the lamp is increased, and the aging of the LED chip is accelerated. Therefore, in order to ensure the normal operation of the lamp, the generated heat must be dissipated in time.

Chinese patent No. CN202709059U discloses a street lamp radiator with a COB integrated light source, which includes a heat exchanger, a finned tube and a fixing flange, the finned tube and the heat exchanger are filled with working medium with boiling point lower than 100 ℃ in vacuum, the bottom surface of the heat exchanger is tightly attached to the back of a substrate integrating an LED light source, and a lighting device is mounted on a vertical lamp post of a street lamp through the fixing flange.

However, in the related art, the contact area between the COB light source and the heat sink is small, only the heat at the position in contact with the bottom surface of the heat exchanger can be absorbed by the heat exchanger, and the heat generated by the COB light source cannot be quickly guided into the heat sink for heat dissipation, which easily causes the problem of low heat dissipation efficiency of the lamp.

SUMMERY OF THE UTILITY MODEL

In order to improve COB integrated optical source's street lamp radiator among the correlation technique and COB light source area of contact little to so that the heat is difficult to derive the radiator fast and outwards gives off, so that the low problem of lamps and lanterns radiating efficiency, this application provides a COB light source radiator.

The application provides a COB light source radiator adopts following technical scheme:

the utility model provides a COB light source radiator, includes the heat dissipation cover, heat dissipation cover top is equipped with the mount, be equipped with the liquid cooling subassembly on the mount for the base plate of installation COB light source is located on the liquid cooling subassembly, the heat that the base plate that the liquid cooling subassembly absorbs and is used for installing the COB light source transmitted gives off outwards.

Through adopting above-mentioned technical scheme, the COB light source is installed in the heat exchanger that looses, and the heat that produces when the COB light source is luminous outwards gives off, and most heat transfer is absorbed by the liquid cooling subassembly fixed with the base plate on the base plate, and all the other parts are with the form of heat radiation on transmitting the heat exchanger, are absorbed and give off external environment by the heat exchanger that looses, and the heat exchanger that looses mutually supports with the liquid cooling subassembly, and the heat that the all-round COB light source that absorbs gives off has higher radiating efficiency.

Optionally, the liquid cooling assembly comprises a liquid storage tank, a condensing reflux pipe and a spiral heat absorption pipe, and working media are filled in the liquid storage tank and the spiral heat absorption pipe;

the liquid reserve tank is located in the heat exchanger that looses and with the mount joint for the base plate of installation COB light source is fixed in on the liquid reserve tank, the reflux condenser pipe is installed the top of liquid reserve tank and with the liquid reserve tank intercommunication, spiral heat absorption pipe is located in the heat exchanger that looses and with the inner wall looks butt of heat exchanger that looses, spiral heat absorption pipe with the liquid reserve tank intercommunication.

Through adopting above-mentioned technical scheme, the overwhelming majority of heat that produces when the COB light source is luminous passes through the base plate and transmits to the liquid reserve tank on, and working medium in the liquid reserve tank is heated the evaporation, forms the ascending entering condensation back flow of steam, and at the ascending in-process of steam, the heat gives off gradually to external environment in, and then steam is condensed by the cooling of condensation back flow and forms the working medium liquid drop, and the working medium liquid drop flows back to in the liquid reserve tank under the action of gravity, continues the heat absorption.

In addition, the spiral heat absorption pipe is abutted to the inner wall of the heat dissipation cover, heat absorbed by the working medium in the spiral heat absorption pipe is transferred to the heat dissipation cover, and the heat dissipation cover releases heat to the environment through heat radiation, so that the heat dissipation efficiency of the radiator is further improved.

Optionally, the mount includes that a pair of is fixed to be propped, and is a pair of fixed propping links to each other through connecting the clamp, and is a pair of enclose between the fixed propping and close and form the confession the through-hole that the reflux condenser pipe passed, the mount is kept away from the one end of through-hole is fixed in through fixing bolt on the heat exchanger that looses.

Through adopting above-mentioned technical scheme, a pair of fixed the propping of connection clamp connection, fixed propping is fixed on the heat exchanger that looses through fixing bolt, has accomplished the demountable installation to the mount, when having made things convenient for actual installation, mount joint reflux condenser.

Optionally, the condensation reflux pipe is sleeved with a condensation sleeve on the side wall, a cavity is formed in the condensation sleeve, and cooling liquid is filled in the cavity.

Through adopting above-mentioned technical scheme, set up condenser sleeve and cover and locate the condenser reflux pipe on, the coolant liquid of pouring into in the condenser sleeve cavity absorbs the heat of condenser reflux pipe transmission, has accelerated the condensing rate of condenser reflux pipe to working medium steam, and then has promoted the heat absorption efficiency of liquid cooling subassembly.

Optionally, the side wall of the condensation sleeve is wound with a heat dissipation strip, and the heat dissipation strip is fixed on the condensation sleeve.

Through adopting above-mentioned technical scheme, the heat that the condenser sleeve absorbed is partly absorbed by the coolant liquid in the condenser sleeve, and remaining part still remains on the condenser sleeve, consequently winds on the condenser sleeve lateral wall and establishes the heat dissipation strip, and the heat that the condenser sleeve absorbed is given the heat dissipation strip and then outwards gives off, promotes the heat absorption effect of condenser sleeve.

Optionally, a plurality of radiating fins are arranged on the side wall of the radiating cover at intervals along the circumferential direction, and an airflow channel is formed between every two adjacent radiating fins.

Through adopting above-mentioned technical scheme, set up a plurality of radiating fins on the heat exchanger that looses, increased the area of contact of heat exchanger and external environment, and then promoted the radiating efficiency of heat exchanger that looses. In addition, an airflow channel is formed between every two adjacent radiating fins, and heat dissipation is accelerated along with airflow flowing, so that the purpose of rapid cooling is achieved.

Optionally, the heat dissipation cover is provided with heat dissipation holes at the positions of the airflow channels in a penetrating manner, the heat dissipation holes are horn holes with the aperture gradually decreasing from outside to inside, and the heat dissipation holes are arranged in an inclined manner towards the substrate for mounting the COB light source.

Through adopting above-mentioned technical scheme, set up the louvre on the heat exchanger that looses, made things convenient for inside and outside circulation of air of heat exchanger, utilize the air current to take away the heat that a part COB light source gived off, dispel the heat with higher speed.

Optionally, an air exhaust fan is installed on the fixing frame, and an air inlet of the air exhaust fan faces the heat dissipation cover.

Through adopting above-mentioned technical scheme, air exhaust fan's air intake sets up towards heat dissipation cover, and the hot-air in the heat dissipation cover is constantly taken out from heat dissipation cover by air exhaust fan, and under the atmospheric pressure effect, the air that has the lower temperature in the external environment constantly has gushes into heat dissipation cover through heat dissipation cover's opening and louvre, forms the air current and blows through COB light source surface, takes away the heat that the COB light source gived off to reach rapid cooling's purpose.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the COB light source is arranged in the heat dissipation cover, heat generated when the COB light source emits light is emitted outwards, most of the heat is transmitted to the substrate and absorbed by the liquid cooling assembly fixed with the substrate, the rest of the heat is transmitted to the heat dissipation cover in a heat radiation mode and absorbed by the heat dissipation cover, and the heat dissipation cover and the liquid cooling assembly are matched with each other, so that the heat emitted by the COB light source is better absorbed, and the COB light source has higher heat dissipation efficiency;

2. the heat generated when the COB light source emits light is transferred to the liquid storage tank through the substrate, the working medium in the liquid storage tank is heated and evaporated to form steam which rises to enter the condensing reflux pipe, the heat is gradually dissipated to the external environment in the steam rising process, then the steam is cooled and condensed by the condensing reflux pipe to form working medium liquid drops, and the working medium liquid drops flow back to the liquid storage tank under the action of gravity and continue to absorb heat;

3. the air intake of the air exhaust fan is arranged towards the heat dissipation cover, hot air in the heat dissipation cover is continuously exhausted by the air exhaust fan, the air with lower temperature in the external environment flows into the heat dissipation cover through the opening and the heat dissipation holes of the heat dissipation cover under the action of air pressure, the air flow is formed to blow the COB light source, the heat dissipated from the surface of the COB light source is taken away, and the rapid cooling is carried out.

Drawings

FIG. 1 is a schematic diagram of a liquid cooling assembly in an embodiment of the present application.

Fig. 2 is a schematic diagram of a COB light source heat sink in the embodiment of the present application.

Fig. 3 is a sectional view of a condensing sleeve in an embodiment of the present application.

Reference numerals are as follows: 1. a heat dissipation cover; 11. heat dissipation holes; 2. a fixed mount; 21. fixing a support; 22. a through hole; 3. a liquid cooling assembly; 31. a liquid storage tank; 32. a condensing reflux pipe; 33. a spiral heat absorbing pipe; 4. a substrate; 5. connecting a hoop; 6. fixing the bolt; 7. a condensing sleeve; 71. a cavity; 8. a heat dissipating strip; 9. a heat dissipating fin; 10. an air flow channel; 12. an air exhaust fan.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses COB light source radiator.

Referring to fig. 1, a COB light source is a high-power integrated surface light source formed by directly attaching an LED chip to a mirror metal substrate 4 with high light reflection rate, and when the high-power COB light source emits light, part of energy is converted into heat, so that the temperature of a lamp is increased, and aging of the LED chip is accelerated.

Referring to fig. 1 and 2, a COB light source radiator includes heat exchanger 1 and installs mount 2 on heat exchanger 1, and heat exchanger 1 covers and locates on the COB light source. Be equipped with liquid cooling subassembly 3 on the heat exchanger 1 that looses, produced heat when liquid cooling subassembly 3 constantly absorbs the COB light source and gives off external environment to reach and reduce COB light source department temperature, prolong this COB light source life's purpose.

In the embodiment of the present application, the heat dissipation cover 1 is made of aluminum material, and has good thermal conductivity.

Referring to fig. 1 and 2, the liquid cooling module 3 includes a liquid storage tank 31, and the substrate 4 is welded to a bottom wall of the liquid storage tank 31. Working medium is filled in the liquid storage tank 31. The working medium selected in the embodiment of the application is ethanol solution, and the ethanol solution is easy to evaporate to form ethanol steam after absorbing heat. The top of the liquid storage tank 31 is communicated with a condensation return pipe 32, the bottom of the liquid storage tank is communicated with a spiral heat absorption pipe 33, and the side wall of the spiral heat absorption pipe 33 is abutted against the inner wall of the heat dissipation cover 1.

In this application embodiment, reflux condenser 32, liquid storage tank 31 and spiral heat absorption pipe 33 integrated into one piece set up, and inside intercommunication forms closed cavity. The condensation return pipe 32, the liquid storage tank 31 and the spiral heat absorption pipe 33 are all made of stainless steel materials, and have good heat conduction performance.

Referring to fig. 1, most of the heat generated by the COB light source is transferred to the ethanol solution in the liquid storage tank 31 through the substrate 4 welded on the liquid storage tank 31, the ethanol solution is heated and evaporated to form ethanol vapor, the ethanol vapor continuously rises in the condensation return pipe 32 and is continuously cooled by the condensation return pipe 32 in the rising process to form ethanol droplets, the ethanol droplets flow back into the liquid storage tank 31 under the action of gravity, the heat is absorbed again and evaporated to form ethanol vapor, the above process is circulated repeatedly, and the purpose of continuously absorbing heat to reduce the temperature of the COB light source is achieved.

Referring to fig. 1 and 2, in addition, heat that the COB light sources fail to transfer to the substrate 4 is transferred to the spiral heat absorbing pipe 33 and the heat dissipation cover 1 in the form of heat radiation, and the spiral heat absorbing pipe 33 and the heat dissipation cover 1 are abutted to each other for heat transfer, and a part of heat is consumed in the process. The spiral heat absorption pipe 33 transfers heat to the ethanol solution, and evaporation of the ethanol solution is accelerated to realize heat dissipation; the heat dissipation cover 1 dissipates heat to the external environment, and the heat dissipation cover and the external environment are mutually matched, so that the heat dissipation efficiency of the radiator is further improved.

Referring to fig. 1 and 3, in the embodiment of the present application, a plurality of the reflux condenser pipes 32 are provided, the reflux condenser pipes 32 are radially arranged, and bottoms of the reflux condenser pipes 32 are communicated with each other. The plurality of condensing return pipes 32 are arranged, so that the condensing speed is increased, and the heat dissipation efficiency of the liquid cooling assembly 3 is improved.

In addition, in order to further improve the heat dissipation efficiency of the condenser/return pipe 32, the condenser/return pipe 32 is sleeved with the condenser sleeve 7. In this application embodiment, condensation sleeve 7 is the aluminium alloy pipe that link up from top to bottom, and integrated into one piece is equipped with heat dissipation strip 8 on condensation sleeve 7, and heat dissipation strip 8 is the heliciform and fixes on condensation sleeve 7's lateral wall, has cavity 71 in the condensation sleeve 7, has filled the coolant liquid in the cavity 71, and the coolant liquid that uses in this application embodiment is the ethylene glycol that mechanical field is often used for cooling down.

When the condensing and returning pipe 32 cools the ethanol vapor, the condensing sleeve 7 continuously absorbs the heat transferred by the condensing and returning pipe 32 and emits the heat to the external environment through the heat radiating strips 8.

Referring to fig. 2, further, in this embodiment of the application, a plurality of heat dissipation fins 9 are uniformly distributed on the outer wall of the heat dissipation cover 1 along the circumferential direction, and the heat dissipation fins 9 and the heat dissipation cover 1 are integrally formed, so that the contact area between the heat dissipation cover 1 and the external environment is increased, and the heat dissipation efficiency is improved.

Referring to fig. 2, an airflow channel 10 is formed between any two adjacent heat dissipation fins 9, a plurality of heat dissipation holes 11 are formed in the heat dissipation cover 1 at the airflow channel 10, and an air exhaust fan 12 is installed on the fixing frame 2. In the embodiment of this application, louvre 11 is the bellmouth hole that the aperture outside-in reduces gradually, and louvre 11's orientation COB light source direction slope sets up. The extraction fan 12 is a commercially available axial fan.

When the air exhaust fan 12 operates, hot air inside the heat dissipation cover 1 is continuously sucked, and under the action of air pressure, cold air outside the heat dissipation cover 1 continuously flows into the heat dissipation cover 1 through the lower end opening of the heat dissipation cover 1 and the heat dissipation holes 11 to replace the hot air inside the heat dissipation cover 1, so that the ambient temperature of the COB light source is reduced.

In addition, set up louvre 11 horn structure that the aperture reduces gradually from outside to inside, when the air in the external world leads to the less one end in aperture from the great one end in 11 apertures of louvre, the air receives the compression, and the velocity of flow becomes fast, can take away more heats in the short time, forms cold wind and blows over COB light source surface, takes away the heat, derives the heat that produces when the COB light source is luminous fast.

Referring to fig. 2, in the embodiment of the present application, in order to facilitate the installation of the liquid cooling assembly 3, the fixing frame 2 adopts a detachable structure. Specifically, the fixing frame 2 includes a pair of fixing supports 21, the pair of fixing supports 21 are connected through a connecting clamp 5, a through hole 22 for clamping the condensation return pipe 32 is formed between the pair of fixing supports 21, two ends of the fixing support 21 are respectively provided with a fixing bolt 6, and the fixing bolt 6 fixes the fixing support 21 on the heat dissipation cover 1.

The implementation principle of this application embodiment COB light source radiator does: COB light source is installed in heat dissipation cover 1, and the heat that produces when the COB light source is luminous outwards gives off, and most heat transfer is absorbed by liquid cooling subassembly 3 with 4 welded of base plate on 4 base plates, and the rest transmits heat dissipation cover 1 with the form of heat radiation on, is absorbed by heat dissipation cover 1, and heat dissipation cover 1 uses with the cooperation of liquid cooling subassembly 3, absorbs the heat that the COB light source gived off better for this COB light source radiator has higher radiating efficiency.

The above embodiments are not intended to limit the scope of the present application, and therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a COB light source radiator which characterized in that: including heat dissipation cover (1), heat dissipation cover (1) top is equipped with mount (2), be equipped with liquid cooling subassembly (3) on mount (2) for base plate (4) of installation COB light source are located on liquid cooling subassembly (3), liquid cooling subassembly (3) absorb the heat that base plate (4) that are used for installing the COB light source transmitted and outwards give off.

2. The COB light source heat sink of claim 1, wherein: the liquid cooling assembly (3) comprises a liquid storage tank (31), a condensation return pipe (32) and a spiral heat absorption pipe (33), and working media are filled in the liquid storage tank (31) and the spiral heat absorption pipe (33);

liquid reserve tank (31) are located in heat dissipation cover (1) and with mount (2) joint for base plate (4) of installation COB light source are fixed in on liquid reserve tank (31), install condensing reflux pipe (32) the top of liquid reserve tank (31) and with liquid reserve tank (31) intercommunication, spiral heat absorption pipe (33) are located in heat dissipation cover (1) and with the inner wall looks butt of heat dissipation cover (1), spiral heat absorption pipe (33) intercommunication liquid reserve tank (31).

3. The COB light source heat sink of claim 2, wherein: mount (2) are including a pair of fixed (21) that prop, and are a pair of fixed (21) that prop link to each other through connecting clamp (5), and are a pair of it closes the formation confession to enclose between the fixed (21) that props through-hole (22) that condenser reflux pipe (32) passed, mount (2) are kept away from the one end of through-hole (22) is fixed in through fixing bolt (6) on heat exchanger (1).

4. The COB light source heat sink of claim 2, wherein: the condensing reflux pipe (32) is provided with a condensing sleeve (7) in the side wall in a sleeved mode, a cavity (71) is arranged in the condensing sleeve (7), and cooling liquid is filled in the cavity (71).

5. The COB light source heat sink of claim 4, wherein: the side wall of the condensation sleeve (7) is wound with a heat dissipation strip (8), and the heat dissipation strip (8) is fixed on the condensation sleeve (7).

6. The COB light source heat sink of claim 1, characterized in that: a plurality of radiating fins (9) are arranged on the side wall of the radiating cover (1) at intervals along the circumferential direction, and an airflow channel (10) is formed between every two adjacent radiating fins (9).

7. The COB light source heat sink of claim 6, wherein: the radiating cover (1) is provided with radiating holes (11) in the air flow channel (10) in a penetrating mode, the radiating holes (11) are horn holes with the hole diameters gradually reduced from outside to inside, and the radiating holes (11) are obliquely arranged towards a substrate (4) used for installing COB light sources.

8. The COB light source heat sink of claim 1, characterized in that: an air exhaust fan (12) is installed on the fixing frame (2), and an air inlet of the air exhaust fan (12) faces the heat dissipation cover (1).