CN214198505U

CN214198505U - Heat dissipation assembly and car lamp LED module with same

Info

Publication number: CN214198505U
Application number: CN202120093123.XU
Authority: CN
Inventors: 张文阳
Original assignee: Suzhou Chuangside New Material Co ltd
Current assignee: Suzhou Chuangside New Material Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-14
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a heat dissipation assembly and have its car light LED module, heat dissipation assembly includes radiator, graphite flake and LED chip subassembly, and the radiator links through the wire electricity with LED chip subassembly, and the one side that is close to the radiator on the LED chip subassembly is the copper base plate, and the laminating has the graphite flake on the copper base plate, and the contact surface phase-match of the two, and the graphite flake is on the radiator, has used this heat dissipation assembly in the car light LED module, the utility model discloses heat dissipation assembly can improve the radiating efficiency and the radiating effect of LED chip subassembly through increasing the graphite flake that does benefit to heat conduction volume between copper base plate and radiator, and the butt face that covers its and copper base plate that the graphite flake is as big as possible can improve heat conduction efficiency; meanwhile, the heat dissipation performance of the car lamp LED module with the heat dissipation assembly can be improved.

Description

Heat dissipation assembly and car lamp LED module with same

Technical Field

The utility model relates to a car light LED module technical field especially relates to radiator unit and have its car light LED module.

Background

The LED light source has the advantages of energy conservation, environmental protection, long service life and the like. The prior art proposes a virtual filament, which guides the light emitted from an LED light source into a light guide rod to simulate the light emitting characteristics of a conventional filament, so that the filament can directly replace the conventional filament. As in application No. 201920083543.2, entitled lighting device, a first light guide is disclosed, which includes a first light guide part and a second light guide part, the second light guide part includes a light emitting surface, and light emitted from a light source is at least partially coupled into the first light guide part and emitted from the light emitting surface of the second light guide part, so that the light guide rod can be used in a vehicle lamp LED module due to its light emitting characteristics.

Lock above-mentioned leaded light stick and be used for car light LED module on LED chip subassembly, but because the long-time work of LED chip subassembly, can give the leaded light stick with heat transfer, if unable quick effectual cooling to the LED chip, can influence the life of LED chip and leaded light stick to influence the life of car light LED module.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a radiator unit and have its car light LED module, radiator unit can improve the radiating efficiency and the radiating effect of LED chip subassembly through increase the graphite flake that does benefit to heat conduction heat between copper base plate and radiator, and the graphite flake covers its butt face with the copper base plate as big as possible, can improve heat conduction efficiency; meanwhile, the heat dissipation performance of the car lamp LED module with the heat dissipation assembly can be improved.

In order to achieve the above purpose, the utility model adopts the technical scheme that: radiating component, including radiator, graphite flake and LED chip subassembly, the radiator passes through the wire electricity with LED chip subassembly and links, the last one side that is close to the radiator of LED chip subassembly is the copper base plate, the laminating has the graphite flake on the copper base plate, and the contact surface phase-match of the two, the graphite flake butt is on the radiator.

As a further optimization, an adhesive layer is arranged on the graphite sheet, and the graphite sheet is attached to the copper substrate or the radiator through the adhesive layer.

As a further optimization, the bonding layer is a double-sided adhesive tape.

The utility model also provides a car light LED module, including radiator unit and epitheca and leaded light stick, the leaded light stick passes the epitheca, its other end butt in on the LED chip subassembly, the epitheca locking is on radiator unit.

As a further optimization, the LED chip assembly is provided with a through hole for locking the body of the LED chip assembly.

As a further optimization, the LED chip assembly includes a copper substrate, an aluminum substrate and LED chip units, the aluminum substrate is fixed on the copper substrate, the LED chip units are disposed on a side of the aluminum substrate away from the copper substrate, the LED chip units include a plurality of LED chips arranged in a matrix, and the light guide rod abuts against the LED chips.

As a further optimization, the light guide rod comprises a first light guide part and a second light guide part which are connected, the second light guide part is a conical body and extends out of the upper shell, a white coating is coated on the surface of the second light guide part to form a light emitting surface, the vertical section of the first light guide part along the central axis of the first light guide part is circular or oval, and one side of the first light guide part, which is far away from the second light guide part, abuts against the LED chip.

As a further optimization, the first light guide part and the second light guide part have the same central axis.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the heat dissipation component can improve the heat dissipation efficiency and the heat dissipation effect of the LED chip component by adding the graphite flake which is beneficial to heat conduction between the copper substrate and the radiator, and the graphite flake covers the butt joint surface of the graphite flake and the copper substrate as much as possible, so that the heat conduction efficiency can be improved;

2. the car light LED module is with leaded light stick butt on LED chip subassembly, makes it and LED chip butt, locks LED chip subassembly on the radiator through the epitheca, forms the car light LED module that has the radiating effect good, has longer life.

Drawings

Fig. 1 is the structure diagram of the car light LED module of the present invention.

Fig. 2 is a structural diagram of the light guide rod of the present invention.

Fig. 3 is a front view of the light guide rod of the present invention without a white coating.

Fig. 4 is a right side view of the light guide rod of the present invention without a white coating.

In the figure, 1, a radiator; 10. a locking hole; an LED chip assembly; 20. a through hole; an LED chip unit; an LED chip; 22. an aluminum substrate; 220. positioning holes; 23. a copper substrate; 31. a housing; 310. a first locking hole; 311. assembling a groove; 32. a top block; 320. a second locking hole; 321. a notch; 300. perforating; 4. a light guide rod; 41. a first light guide part; 411. a first central axis; 42. a second light guide part; 421. a second central axis; 43. a white coating; 5. a graphite sheet.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 4, the heat dissipation assembly includes a heat sink 1, a graphite sheet 5 and an LED chip assembly 2, the heat sink 1 is electrically connected to the LED chip assembly 2 through a wire (not shown), one side of the LED chip assembly 2 close to the heat sink 1 is a copper substrate 22, the copper substrate 22 is attached with the graphite sheet 5, contact surfaces of the two match, and the graphite sheet 5 abuts against the heat sink 1.

The graphite flake which is beneficial to conducting heat is added between the copper substrate and the radiator, so that the heat dissipation efficiency and the heat dissipation effect of the LED chip assembly can be improved, the LED chip assembly can be kept at a normal working temperature, and the influence of long-time high-temperature work on the service life of the LED chip assembly is prevented; meanwhile, the graphite sheet covers the abutting surface of the copper substrate as much as possible, so that the heat conduction efficiency can be improved.

The graphite sheet 5 is provided with an adhesive layer, and the graphite sheet 5 is attached to the copper substrate 23 or the radiator through the adhesive layer. The graphite flake can be directly positioned on copper base plate and radiator, is fixed in the graphite flake between the two through outside locking effect, also can laminate the graphite flake on copper base plate or radiator through the double faced adhesive tape, has better fixed effect.

The utility model also provides a car light LED module, including radiator unit, and epitheca and leaded light stick 4, the epitheca includes casing 31 and kicking block 32, leaded light stick 4 passes the casing of epitheca, assembly groove 311 has on this casing, then compress tightly the leaded light stick in the casing through kicking block 32 embedding assembly groove, have on the kicking block with leaded light stick assorted breach 321 that is used for holding the leaded light stick, the kicking block is locked through locking the spiral shell selection through the second locking hole 320 of its body and the first locking hole 310 on the casing, the other end butt of leaded light stick is on LED chip 211 on LED chip subassembly 2, the epitheca locks on radiator unit's radiator 1.

The LED chip assembly 2 comprises a copper substrate 23, an aluminum substrate 22 and LED chip units 21, wherein the aluminum substrate 22 is fixed on the copper substrate 23, the LED chip units 21 are arranged on one side of the aluminum substrate 22 away from the copper substrate 23, the LED chip units 21 comprise a plurality of LED chips 211 arranged in a matrix shape, and the light guide rod 4 abuts against the LED chips 211.

The light guide rod is abutted to the LED chip assembly to be abutted to the LED chip assembly, the LED chip assembly is locked on the radiator through the upper shell, the vehicle lamp LED module with a good radiating effect is formed, and the service life is long.

The bottom end of the upper shell is provided with a positioning pin, the aluminum substrate is provided with a positioning hole 220, and the light guide rod can be accurately butted with the LED chip through the positioning action of the positioning pin and the positioning hole 220; be equipped with perforation 300 on the epitheca, be equipped with through-hole 20 on the LED chip subassembly, be equipped with locking hole 10 on the radiator, through the locking bolt who imbeds locking hole 10 behind passing perforation 300 and through-hole 20 in proper order, can be with the accurate fixed in LED chip subassembly position.

The light guide rod 4 comprises a first light guide part 41 and a second light guide part 42 which are connected, the second light guide part 42 is a conical body and extends out of the upper shell 31, a white coating 43 is coated on the surface of the second light guide part 42 to form a light emitting surface, the vertical section of the first light guide part 41 along the central axis is circular or oval, and one side of the first light guide part 41 far away from the second light guide part 42 is abutted to the LED chip 211; the first light guide parts 41 and the second light guide parts 42 have the same central axis.

The first light guide part and the second light guide part are integrally formed and are coaxially arranged, the first central axis 411 of the first light guide part and the second central axis 421 of the second light guide part are positioned on the same straight line, namely the first light guide part and the second light guide part have rotational symmetry, so that the light guide rod is installed on an LED module of the automobile lamp, the module can be directly installed without angle adjustment and positioning during installation, and convenience and accuracy of the installation of the light guide rod on the LED module of the automobile lamp and the installation of the module are improved; the light enters from the side, far away from the second light guide part, of the first light guide part, part of the light directly enters the second light guide part through the first light guide part in the direction parallel to the central axis of the first light guide part, the other part of the light enters the second light guide part after being refracted inside the first light guide part, and the reflection of the light in the second light guide part is increased through the white coating on the surface of the second light guide part, so that the light can be emitted in a concentrated manner in the second light guide part.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The heat dissipation assembly is characterized by comprising a heat radiator, a graphite sheet and an LED chip assembly, wherein the heat radiator is electrically connected with the LED chip assembly through a wire, one side, close to the heat radiator, of the LED chip assembly is a copper substrate, the copper substrate is laminated with the graphite sheet, the contact surfaces of the copper substrate and the graphite sheet are matched, and the graphite sheet is abutted to the heat radiator.

2. The heat dissipation assembly of claim 1, wherein the graphite sheet is provided with an adhesive layer, and the graphite sheet is attached to the copper substrate or the heat spreader through the adhesive layer.

3. The heat dissipation assembly of claim 2, wherein the adhesive layer is a double-sided tape.

4. The car light LED module is characterized by comprising the heat dissipation assembly as claimed in any one of claims 1 to 2, an upper shell and a light guide rod, wherein the light guide rod penetrates through the upper shell, the other end of the light guide rod abuts against an LED chip on the LED chip assembly, and the upper shell is locked on the heat dissipation assembly.

5. The vehicle lamp LED module according to claim 4, wherein the LED chip assembly is provided with a through hole for locking the body of the LED chip assembly.

6. The vehicle lamp LED module according to claim 4, wherein the LED chip assembly comprises a copper substrate, an aluminum substrate and LED chip units, the aluminum substrate is fixed on the copper substrate, the LED chip units are arranged on the side of the aluminum substrate away from the copper substrate, the LED chip units comprise a plurality of LED chips arranged in a matrix shape, and the light guide rod abuts against the LED chips.

7. The vehicular lamp LED module according to claim 6, wherein the light guide rod comprises a first light guide part and a second light guide part which are connected, the second light guide part is a cone-shaped body and extends out of the upper shell, a white coating is coated on the surface of the second light guide part to form a light emitting surface, the vertical cross section of the first light guide part along the central axis of the first light guide part is circular or elliptical, and one side of the first light guide part, which is far away from the second light guide part, abuts against the LED chip.

8. The vehicular lamp LED module according to claim 7, wherein the first light guide part and the second light guide part have the same central axis.