CN215862929U

CN215862929U - Light source module and lighting device

Info

Publication number: CN215862929U
Application number: CN202121813089.5U
Authority: CN
Inventors: 曹春雷; 杜冬冬
Original assignee: Huzhou Mingshuo Optoelectronic Technology Co ltd; Tunghsu Technology Group Co Ltd
Current assignee: Huzhou Mingshuo Optoelectronic Technology Co ltd; Tunghsu Technology Group Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-02-18
Anticipated expiration: 2031-08-04

Abstract

The utility model provides a light source module and a lighting device, belonging to the technical field of lighting, wherein the light source module comprises a radiator, a light source component and a graphene heat conducting piece; the radiator comprises a bottom plate and radiating fins which are arranged on one side of the bottom plate and used for leading the radiation; the light source assembly is arranged on one side of the bottom plate, which is far away from the radiating fin, and comprises a light source arranged corresponding to the center of the bottom plate; the graphene heat conducting piece is filled between the light source and the radiator and used for conducting heat generated by the light source to the radiator. According to the utility model, the graphene heat-conducting piece is filled in the gap between the light source and the radiator, so that the heat of the light source is rapidly LED out, the temperature difference between the light source and the radiating platform is reduced, the temperature difference between the radiator and the light source is controlled within 2 ℃, the heat conduction efficiency of the LED chip is greatly improved, the temperature of the light source chip is kept within a good range, the light attenuation of the light source chip is reduced, and the service life of the light source is prolonged.

Description

Light source module and lighting device

Technical Field

The utility model belongs to the technical field of illumination, and particularly relates to a light source module and an illumination device.

Background

The LED light source module has the advantages of energy conservation, high efficiency, environmental protection and the like, and gradually replaces the traditional incandescent lamp and energy-saving lamp, and is widely applied to ordinary families. Because the LED is a point light source and has a small area, only 30-50% of the input electric energy is output in a light form, and the rest 50-70% of the input electric energy is released in a heat form, the heat productivity of the LED is large and concentrated, and meanwhile, the heat has a large influence on the light emission of the LED. In order to solve the technical problem, a heat sink is required to dissipate heat, usually the LED is mounted on the surface of the heat sink to dissipate heat, however, the larger the power of the LED, the larger the volume of the heat sink is required, which not only results in larger volume and heavier weight of the LED lamp, but also results in higher price.

In addition, the standardized light source module formed on the basis of a high-power COB (chip on board) is adopted in the prior art, and due to the fact that the heat flux density is concentrated, the heat of the light source is not easy to be led out, the heat dissipation area of the standardized module is similar, the heat radiation is almost the same, and therefore the service life is not easy to guarantee when the standard module is used for high power.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a light source module and a lighting device to accelerate the heat dissipation of a light source in the light source module.

In order to achieve the above object, the present invention provides a light source module, which includes:

the radiator comprises a bottom plate and radiating fins which are arranged on one side of the bottom plate and used for leading the radiation;

the light source assembly is arranged on one side of the bottom plate, which is far away from the radiating fin, and comprises a light source arranged in the center position corresponding to the bottom plate;

the graphene heat conducting piece is filled between the light source and the radiator and used for conducting heat generated by the light source to the radiator.

In the embodiment of the utility model, the number of the radiating fins is multiple, the radiating fins are arranged in parallel at intervals along the length direction of the bottom plate, and a radiating channel is formed between any two adjacent radiating fins.

In the embodiment of the utility model, the bottom plate comprises a mounting plate and end plates arranged at two ends of the mounting plate, the mounting plate is arranged in a concave manner relative to the end plates, the light source assembly is arranged on the mounting plate, the mounting plate is horizontally arranged, and each radiating fin is vertical to the mounting plate.

In an embodiment of the utility model, at least a portion of the fins on the back side of the end plate have a height less than the height of the fins on the back side of the mounting plate.

In the embodiment of the utility model, the heights of the plurality of radiating fins on the back surface of the mounting plate are all the same, and the heights of the plurality of radiating fins on the back surface of the end plate are in a decreasing trend along the direction departing from the mounting plate.

In the embodiment of the utility model, the back surface of the mounting plate is provided with a terminal interface for connecting a terminal wire, and the terminal wire is led out from between the two radiating fins.

In an embodiment of the utility model, the light source module further includes a lens and a waterproof silicone ring sleeved on the periphery of the lens, the light source is covered in the lens, and the waterproof silicone ring is in sealing fit with the edge of the lens.

In the embodiment of the utility model, the light source module further comprises a gland used for pressing the lens on the mounting plate, and the mounting plate and the waterproof silica gel ring are detachably connected with the gland.

In the embodiment of the utility model, the gland is provided with the avoidance hole corresponding to the lens, and the shape of the lens is consistent with that of the avoidance hole and can be exposed from the avoidance hole.

In an embodiment of the present invention, a lighting device is also provided, where the lighting device includes the light source module described above.

Through the technical scheme, the light source module provided by the embodiment of the utility model has the following beneficial effects:

when the installation, install the light source subassembly on the bottom plate, the bottom plate deviates from one side of light source subassembly and is provided with graphite alkene heat-conducting piece, and the clearance between the bottom plate of light source and fin adopts graphite alkene heat-conducting piece to fill to the heat that produces the light source via the fin of bottom plate conduction to the radiator back, the fin dispels the heat to the heat that produces. And, in order to raise the heat-dissipating efficiency of the heat sink, apply the heat-dissipating coating on both sides of each heat sink. According to the utility model, the graphene heat-conducting piece is filled in the gap between the light source and the radiator, so that the temperature difference between the radiator and the light source is controlled within 2 ℃, the heat conduction efficiency of the LED chip is greatly improved, the temperature of the light source chip is kept within a good range, the light attenuation of the LED chip is reduced, and the service life of the LED is prolonged; moreover, the graphene heat conducting piece is arranged between the heat dissipation platform of the radiator and the light source, so that the heat of the light source can be quickly led out, and the temperature difference between the light source and the heat dissipation platform is reduced.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of a light source module according to an embodiment of the utility model;

FIG. 2 is an exploded view of a light source module according to an embodiment of the present invention;

FIG. 3 is a schematic front view illustrating a light source module according to an embodiment of the utility model;

fig. 4 is a schematic top view illustrating a light source module according to an embodiment of the utility model.

Description of the reference numerals

1 Heat sink 22 light source

11 bottom plate 3 graphene heat-conducting silica gel

111 mounting panel 4 waterproof silica gel circle

112 end plate 5 gland

12 heat sink 51 relief hole

2 light source assembly 6 terminal wire

21 lens 61 terminal interface

Detailed Description

The following detailed description of specific embodiments of the utility model refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the utility model and are not restrictive thereof.

The following describes a light source module according to the present invention with reference to the accompanying drawings.

Referring to fig. 1 and 2, in an embodiment of the present invention, a light source module is provided, where the light source module includes a heat sink 1, a light source assembly 2, and graphene thermal silica gel 3; the radiator 1 comprises a bottom plate 11 and a plurality of radiating fins 12 arranged on the back surface of the bottom plate 11, wherein two side surfaces of each radiating fin 12 are coated with radiating coatings; the light source assembly 2 is arranged on the front surface of the bottom plate 11, and the light source assembly 2 comprises a lens 21 and a light source 22 covered in the lens 21; the graphene heat conducting piece is graphene heat conducting silica gel 3, the graphene heat conducting silica gel 3 is filled between the light source 22 and the radiator 1, and the graphene heat conducting silica gel 3 is used for conducting heat generated by the light source 22 to the radiator 1. The light source 22 is a standardized light source module based on an array formed by LED lamp beads within 1W or 3W, and the light source module has the advantages of light source dispersion and good heat dissipation performance.

Further, as shown in fig. 3, the back surface of the bottom plate 11 is below the bottom plate 11, and the front surface of the bottom plate 11 is above the bottom plate 11. When the LED lamp is installed, the light source assembly 2 is installed on the bottom plate 11, gaps between the light source 22 and the bottom plate 11 of the radiating fin 12 are filled with the graphene heat-conducting silica gel 3, so that heat generated by the light source 22 is conducted to the radiating fin 12 on the back face of the radiator 1 through the bottom plate 11, and the radiating fin 12 radiates the generated heat. Also, in order to improve the heat dissipation efficiency of the heat dissipation fins 12, a heat dissipation coating is applied to both sides of each of the heat dissipation fins 12. Light source subassembly 2 includes that 60 w's COB forms with the cooperation of glass lens 21, can realize fine grading effect to satisfy the road demand. According to the utility model, the graphene heat-conducting silica gel 3 is filled in the gap between the light source 22 and the radiator 1, so that the temperature difference between the radiator 1 and the light source 22 is controlled within 2 ℃, the heat conduction efficiency of the LED chip is greatly improved, the temperature of the light source 22 chip is kept within a good range, the light attenuation of the LED chip is reduced, and the service life of the LED is prolonged; moreover, the graphene heat conducting silica gel 3 is bound between the heat dissipation platform of the heat sink 1 and the light source 22, so that the heat of the light source 22 is rapidly led out, the temperature difference between the light source 22 and the heat dissipation platform is reduced, and the power of the light source module is further improved.

It should be noted that the heat dissipation coatings on the two side surfaces of the heat dissipation plate 12 are made of a fluororesin composite material containing graphene, which may also be referred to as an RLCP (reversible liquid crystal phase change material based on graphene) graphene fluororesin composite material, and this composite material can enhance infrared radiation and improve the heat dissipation efficiency of the heat dissipation plate 12. Furthermore, the emissivity of the surface of the common heat sink 1 is 0.2, and after the RLCP graphene fluororesin composite material coating is added, the emissivity is increased to 0.7, so that the external radiation and the stored heat are greatly enhanced.

In an embodiment of the present invention, the graphene thermal silica gel 3 is composed of carbon nanotubes, graphene, phase change capsule particles, and silicone oil. The thermal conductivity of the single-layer graphene or the multi-layer graphene is far higher than that of the graphite powder and the silver powder, and the thermal conductivity coefficient of the whole heat-conducting silica gel can be greatly improved by adding the graphene; the carbon nano tube can form an effective heat conduction grid in the heat conduction silica gel, so that the contact thermal resistance between interfaces is reduced, and the purposes of improving the heat conduction performance of the heat conduction silica gel and prolonging the service life are achieved; the phase change capsule particles increase the specific surface area of the material, remarkably improve the absorption rate of the initial temperature of the hot end and achieve the purpose of rapid heat absorption. The graphene heat-conducting silica gel 3 has the advantages that point-line-plane full three-dimensional grid distribution is formed in the fluid, high heat conductivity and good fluidity are achieved, the heat dissipation efficiency of the heat-conducting silica gel is greatly improved, and the service life of the heat-conducting silica gel is greatly prolonged.

Further, the volume percentage range of the silicone oil is 30-50%; the carbon nano tube, the graphene and the phase change capsule particles jointly form an additive, the volume percentage range of the additive is 50% -70%, wherein the mass ratio of the carbon nano tube in the additive is 5% -15%, the mass ratio of the graphene is 50% -65%, and the mass ratio of the phase change capsule particles is 20% -45%. In the actual process of preparing the graphene heat-conducting silica gel 3, the operation can be carried out according to the proportioning range, and the performances of the prepared graphene heat-conducting silica gel 3 are slightly different in different proportioning, but the overall heat-conducting effect is not greatly different.

In the embodiment of the present invention, the heat dissipation fins 12 are comb-shaped, the plurality of heat dissipation fins 12 are arranged in parallel and at intervals along the length direction of the bottom plate 11, and a heat dissipation channel is formed between any two adjacent heat dissipation fins 12, so as to accelerate the heat dissipation of each heat dissipation fin 12 and prevent the influence of too small distance between each heat dissipation fin 12 on the heat dissipation. The utility model achieves the purposes of temperature equalization and material saving at all parts of the radiating fins 12 of the radiator 1 through the reasonable design of the radiating channels and the radiating fin 12 structures of the aluminum profile radiator 1.

In the embodiment of the present invention, the bottom plate 11 includes a mounting plate 111 and end plates 112 disposed at two ends of the mounting plate 111, the mounting plate 111 is recessed relative to the end plates 112, the light source assembly 2 is mounted on the mounting plate 111, the mounting plate 111 is disposed horizontally, and each of the heat dissipation fins 12 is perpendicular to the mounting plate 111. The end plate 112 is the slope setting, along the direction downward sloping gradually of keeping away from mounting panel 111, forms a space that is used for holding light source module 2 between the end plate 112 at mounting panel 111 and both ends to do not receive external influence when making light source module 2 install on mounting panel 111.

In an embodiment of the utility model, the height of at least part of the fins on the back of the end plate is less than the height of the fins on the back of the mounting plate; preferably, the plurality of fins 12 on the back side of the mounting plate 111 are all the same height, and the plurality of fins 12 on the back side of the end plate 112 have decreasing heights in a direction away from the mounting plate 111. Because the light source assembly 2 is installed on the installation plate 111, the contact area between the light source assembly 2 and the installation plate 111 is the largest, so that the installation plate 111 has the largest influence on the heat generated by the light source assembly 2, and therefore the area of the heat dissipation fins 12 corresponding to the other side of the installation plate 111 is the largest, and the heat dissipation efficiency at the installation plate 111 can be improved. The heights of the heat dissipation fins 12 on the back of the end plates 112 at the two ends of the mounting plate 111 decrease progressively along the direction away from the mounting plate 111, and since the end plates 112 are farther away from the mounting plate 111, the influence of the heat generated by the light source assembly 2 on the end plates 112 is weaker, and in order to save cost, the areas of the heat dissipation fins 12 on the positions of the end plates 112 farther away from the mounting plate 111 are smaller, so that the purpose of heat dissipation is achieved, and material cost is saved.

In the embodiment of the utility model, the light source module further includes a waterproof silicone ring 4 sleeved on the periphery of the lens 21, and the waterproof silicone ring 4 is in sealing fit with the edge of the lens 21.

In the embodiment of the present invention, the light source module further includes a pressing cover 5 for pressing the lens 21 onto the mounting plate 111, and the mounting plate 111 and the waterproof silicone ring 4 are detachably connected to the pressing cover 5.

Understandably, as shown in fig. 4, the waterproof silicone ring 4 is sleeved at the edge of the lens 21, and is pressed with the mounting plate 111 of the heat sink 1 through the pressing cover 5, so as to realize the sealing effect between the lens 21 and the mounting plate 111 of the heat sink 1; in addition, waterproof silica gel circle 4 still plays waterproof effect, prevents that the light source module from influencing the work of lens 21 because of intaking in the use. And, through the pressfitting between gland 5 and the mounting panel 111 of fin 12, be fixed in the top of COB light source 22 to form required special grading, satisfy the road lighting demand.

In the embodiment of the present invention, the pressing cover 5 is formed with a relief hole 51 corresponding to the lens 21, and the shape of the relief hole 51 is identical to the shape of the lens 21, so that the lens 21 is exposed from the relief hole 51. The convex surface of the lens 21 is disposed toward the relief hole 51 of the cover 5 and is exposed from the relief hole 51, so that the cover 5 presses the lens 21 without affecting the use effect of the lens 21. In addition, the gland 5 is of an AD12 die-casting aluminum structure and is connected with the waterproof silica gel ring 4 and the mounting plate 111 through screws, and therefore the lens 21 is positioned stably and sealed. In other embodiments, the pressing cover 5 and the mounting plate 111 may also be detachably connected by clamping or bonding, so as to facilitate the detachment.

In the embodiment of the present invention, the back surface of the mounting board 111 is provided with the terminal interface 61 to which the terminal wire 6 is connected, and the terminal wire 6 is led out from between the two heat sinks 12. Specifically, the M15 integrated waterproof terminal realizes the effects of quick wire assembly and quick power supply plugging and unplugging, and improves the production efficiency and the maintenance efficiency to a certain extent. The M15 integrated waterproof terminal wire 6 is connected with the radiator 1 through a PG7 thread and a waterproof pad, so that the wire is stable and waterproof; and the terminal wire 6 is connected with the positive electrode and the negative electrode of the COB light source 22 in a welding mode, so that power supply of an external standard interface is realized.

In an embodiment of the present invention, a lighting device is also provided, which includes the light source module described above. The lighting device has the beneficial effects of the light source module because all technical characteristics of the light source module are adopted, and the description is omitted.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a light source module which characterized in that, light source module includes:

the radiator (1) comprises a bottom plate (11) and radiating fins (12) which are arranged on one side of the bottom plate (11) and used for leading heat dissipation;

the light source assembly (2) is arranged on one side, away from the radiating fins (12), of the bottom plate (11), and the light source assembly (2) comprises a light source (22) arranged in the center position corresponding to the bottom plate (11);

the graphene heat conduction piece is filled between the light source (22) and the heat sink (1), and is used for conducting heat generated by the light source (22) to the heat sink (1).

2. The light source module according to claim 1, wherein the number of the heat dissipation fins (12) is plural, and the plural heat dissipation fins (12) are arranged in parallel and at intervals along the length direction of the base plate (11), and a heat dissipation channel is formed between any two adjacent heat dissipation fins (12).

3. The light source module according to claim 2, wherein the bottom plate (11) comprises a mounting plate (111) and end plates (112) disposed at two ends of the mounting plate (111), the mounting plate (111) is recessed relative to the end plates (112), the light source assembly (2) is mounted on the mounting plate (111), the mounting plate (111) is disposed horizontally, and each of the heat dissipation fins (12) is perpendicular to the mounting plate (111).

4. The light source module according to claim 3, wherein at least a portion of the heat sink (12) on the back of the end plate (112) has a height less than a height of the heat sink (12) on the back of the mounting board (111).

5. The light source module according to claim 3, wherein the height of the plurality of heat sinks (12) on the back surface of the mounting plate (111) is the same, and the height of the plurality of heat sinks (12) on the back surface of the end plate (112) decreases in a direction away from the mounting plate (111).

6. A light source module according to claim 3, wherein the back surface of the mounting board (111) is provided with a terminal interface (61) for connecting a terminal wire (6), and the terminal wire (6) is led out from between the two heat sinks (12).

7. The light source module according to any one of claims 3 to 6, further comprising a lens (21) and a waterproof silicone ring (4) sleeved on the periphery of the lens (21), wherein the light source (22) is covered in the lens (21), and the waterproof silicone ring (4) is in sealing fit with the edge of the lens (21).

8. The light source module according to claim 7, further comprising a gland (5) for pressing the lens (21) onto the mounting plate (111), wherein the mounting plate (111) and the waterproof silicone ring (4) are detachably connected to the gland (5).

9. The light source module according to claim 8, wherein the cover (5) has an avoiding hole (51) corresponding to the lens (21), and the lens (21) has a shape corresponding to the avoiding hole (51) and is exposed from the avoiding hole (51).

10. A lighting device, characterized in that the lighting device comprises the light source module according to any one of claims 1 to 9.