Novel heat dissipation device of miniaturized lamp

Abstract

The novel heat dissipation device of the small lamp comprises a lamp body, and a heat dissipation mechanism is installed at the top end of the lamp body. The heat dissipation mechanism comprises a cover body, a base, a copper pipe, an aluminum sheet and a heat dissipation fan; the cover body is fixed to the top end of the lamp body in a screwing mode. The base is fixedly attached to the top end of the COB light source of the lamp body, and a plurality of copper pipes extending vertically are connected to the top end of the base. A plurality of aluminum sheets which are distributed at intervals are laterally fixed at the top of the copper pipe, and a heat dissipation gap is formed between every two adjacent aluminum sheets; the heat dissipation fan is fixed to one side of each aluminum sheet, the wind direction of the heat dissipation fan is set to face a heat dissipation gap between the aluminum sheets, corrugated protruding structures are arranged on the surfaces of the aluminum sheets, and the depth of the corrugated protruding structures is 0.2-0.5 mm. The COB lamp is novel in structure, the heat dissipation efficiency of the lamp is improved, and the service life of the COB is prolonged; the service life of the light source is greatly prolonged.

Description

Technical Field

[0001] The invention relates to a heat dissipation device, in particular to a novel heat dissipation device for a miniaturized lamp. Background Art

[0002] Miniaturized lamps are usually highly integrated and have limited internal space, which makes their heat dissipation channels relatively narrow. Traditional heat dissipation methods, such as relying solely on the natural heat dissipation of the lamp housing, are difficult to meet the large amount of heat dissipation requirements generated when the lamp is running at high power. As the power of the lamp continues to increase, heat accumulates inside the lamp, causing the lamp temperature to rise rapidly. Excessive temperature will have a serious impact on the performance of the lamp, such as reducing the luminous efficiency of the light source, shortening the service life of the light source, and may even cause lamp failure, affecting normal use.

[0003] Some existing heat dissipation devices have complex structures and are difficult to install and maintain. In the limited space of miniaturized lamps, complex structures not only increase the overall volume of the lamp, but also may affect the internal layout of the lamp, resulting in restrictions on the installation and wiring of other components. Moreover, complex structures also mean higher manufacturing costs and longer production cycles, which is not conducive to the large-scale promotion and application of products. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a new type of heat dissipation device for a miniaturized lamp, which effectively solves the problems mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: the present invention comprises a lamp body, and the heat dissipation mechanism is installed on the top of the lamp body;

[0006] The heat dissipation mechanism includes a cover, a base, a copper tube, an aluminum sheet and a heat dissipation fan;

[0007] The cover body is fixed to the top of the lamp body by screwing;

[0008] The top of the COB light source of the lamp body is fitted and fixed with the base, and the top of the base is connected to a plurality of vertically extending copper tubes;

[0009] A plurality of aluminum sheets are fixed laterally on the top of the copper tube at intervals, and heat dissipation gaps are formed between adjacent aluminum sheets;

[0010] The heat dissipation fan is fixed on one side of the aluminum sheet, and the wind direction of the heat dissipation fan is set to be toward the heat dissipation gap between the aluminum sheets. The surface of the aluminum sheet is provided with a corrugated convex structure, and the depth of the corrugated convex structure is 0.2-0.5mm.

[0011] Preferably, the cover body is provided with a plurality of air inlet holes on one side of the heat dissipation fan, and the cover body is provided with a plurality of air outlet holes on one side of the aluminum sheet.

[0012] Preferably, the copper tube is fixedly connected to the base by welding or heat-conducting adhesive, and the interior of the copper tube is filled with a phase-change heat-conducting medium.

[0013] Preferably, the thickness of the aluminum sheet is 0.5-1.2 mm, and the width of the gap between adjacent aluminum sheets is 2-5 mm.

[0014] Preferably, the base is made of copper, a dust screen is provided on the inner side of the air inlet, and the opening direction of the air outlet is inclined downward with an inclination angle of 15°-30°.

[0015] Preferably, a thermally conductive silicone layer is provided between the base and the COB light source of the lamp body, and the thickness of the thermally conductive silicone layer is 0.3-0.8 mm.

[0016] Beneficial effects: 1. Rapid heat transfer: The phase-change heat-conducting medium filled in the copper tube undergoes phase change after absorbing heat, absorbing a large amount of latent heat, greatly improving the speed and efficiency of heat transfer, and allowing the heat to be quickly transferred to the top along the copper tube;

[0017] 2. Enhanced heat dissipation: The corrugated convex structure on the surface of the aluminum sheet increases the surface area. When air flows through the heat dissipation gap between the aluminum sheets, the increased heat exchange area can more effectively absorb the heat on the aluminum sheet and enhance the heat dissipation effect;

[0018] 3. Protective design: The air inlet is equipped with a dustproof net to prevent dust from entering the device and avoid the heat dissipation effect affected by dust accumulation; the air outlet is tilted downward, which not only utilizes the principle of natural convection to facilitate the discharge of hot air, but also effectively prevents rainwater, dust and other impurities from flowing back, ensuring the stable operation of the device;

[0019] 4. Stable operation: Through the above-mentioned continuous heat transfer and air circulation process, efficient heat dissipation is achieved, ensuring that the lamps continue to work in a stable temperature environment and extending the service life of the lamps. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 is a bottom view of the present invention;

[0023] Figure 3 It is the BB cross-sectional view of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the heat dissipation mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the aluminum sheet installation structure of the present invention;

[0026] Numbers in the figure: 1. lamp body; 2. heat dissipation mechanism; 3. cover body; 4. base; 5. copper tube; 6. aluminum sheet; 7. cooling fan; 8. air inlet; 9. air outlet. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-5 The specific implementation modes of the present invention are described in further detail.

[0028] Embodiment 1, by Figure 1-5 The present invention provides a novel heat dissipation device for a miniaturized lamp, comprising a lamp body 1, and a heat dissipation mechanism 2 is installed on the top of the lamp body 1;

[0029] The heat dissipation mechanism 2 includes a cover 3, a base 4, a copper tube 5, an aluminum sheet 6 and a heat dissipation fan 7;

[0030] The cover body 3 is fixed to the top of the lamp body 1 by screwing;

[0031] The base 4 is fixedly attached to the top of the COB light source of the lamp body 1, and a plurality of vertically extending copper tubes 5 are connected to the top of the base 4;

[0032] A plurality of aluminum sheets 6 are fixed laterally on the top of the copper tube 5 and are spaced apart from each other, and heat dissipation gaps are formed between adjacent aluminum sheets 6;

[0033] The cooling fan 7 is fixed to one side of the aluminum sheet 6, and the wind direction of the cooling fan 7 is set to be toward the cooling gap between the aluminum sheets 6. The surface of the aluminum sheet 6 is provided with a corrugated protrusion structure 12, and the depth of the corrugated protrusion structure 12 is 0.2-0.5mm.

[0034] Lamp body 1: As the main part of the lamp, it carries other components.

[0035] Heat dissipation mechanism 2:

[0036] Cover 3: It is fixed to the top of the lamp body 1 by screwing, and plays the role of protecting and guiding airflow. It is provided with a plurality of air inlet holes 8 on one side and a plurality of air outlet holes 9 on the other side. A dustproof net 10 is provided inside the air inlet holes 8 to prevent dust from entering. The opening direction of the air outlet holes 9 is tilted downward at an angle of 15°-30°, which can effectively prevent rainwater from entering the device.

[0037] Base 4: Made of copper, fixed to the top of the COB light source of the lamp body 1, with a thermal conductive silicone layer 11 with a thickness of 0.3-0.8 mm between the COB light source to enhance the heat transfer efficiency between the two.

[0038] Copper tubes 5: Several copper tubes 5 are vertically extended and connected to the top of the base 4, and are fixedly connected to the base 4 by welding or thermal conductive adhesive. The inside is filled with phase-change thermal conductive medium, which can quickly transfer heat.

[0039] Aluminum sheet 6: fixed laterally on the top of the copper tube 5, distributed at intervals, forming heat dissipation gaps between adjacent aluminum sheets 6, with a thickness of 0.5-1.2mm, a gap width of 2-5mm between adjacent aluminum sheets 6, and a corrugated convex structure 12 with a depth of 0.2-0.5mm on the surface to increase the heat dissipation area.

[0040] Cooling fan 7: fixed on one side of the aluminum sheet 6, with wind direction toward the cooling gap between the aluminum sheets 6, accelerating air flow and enhancing the cooling effect.

[0041] The surface of the aluminum sheet 6 is sprayed with a graphene-based coating to increase the heat carried per unit area, with a thermal conductivity (W / m·K) of 1500-2000. Nanoparticles (such as graphene and boron nitride) in the coating are embedded in the micropores on the surface of the substrate to reduce the air gap on the contact surface, reduce the contact thermal resistance by 50%-70%, and enhance the heat dissipation performance.

[0042] Working principle: When the present invention is used, after the miniaturized lamp is turned on, the COB light source of the lamp body 1 serves as the main heat source, continuously generating heat. The heat first encounters the thermal conductive silicone layer 11 located between the COB light source and the copper base 4. The thermal conductive silicone layer 11 can quickly transfer the heat generated by the COB light source to the copper base 4 by virtue of its good thermal conductivity. Due to the high thermal conductivity of copper, the base 4 can efficiently collect and conduct heat, laying the foundation for subsequent heat transfer.

[0043] Then, the heat is transferred from the base 4 to the copper tubes 5 connected thereto. After absorbing the heat, the phase-change heat-conducting medium filled in the copper tubes 5 undergoes a phase change process from solid to liquid or gas. During this phase change process, the phase-change heat-conducting medium can absorb a large amount of latent heat, greatly improving the speed and efficiency of heat transfer, so that the heat can be quickly transferred upward along the copper tubes 5 to the top.

[0044] Aluminum sheets 6 are fixed laterally at intervals on the top of the copper tube 5. The unique corrugated convex structure 12 on the surface of the aluminum sheet 6 significantly increases the surface area of ​​the aluminum sheet 6. When the cooling fan 7 starts to operate, the strong wind force causes air to enter the device from the air inlet 8 on one side of the cover body 3. The incoming air fully contacts the aluminum sheet 6 when passing through the heat dissipation gaps between the aluminum sheets 6. As the surface area of ​​the aluminum sheet 6 increases, the heat exchange area between the air and the aluminum sheet 6 also increases accordingly, so that the heat on the aluminum sheet 6 can be absorbed more effectively.

[0045] The air carrying the heat continues to flow and is eventually discharged from the air outlet 9 tilted downward on the other side of the cover 3. The design of the air outlet 9 tilted downward can, on the one hand, utilize the principle of natural convection to make it easier for hot air to be discharged; on the other hand, it can effectively prevent rainwater, dust and other impurities from flowing back into the device, affecting the heat dissipation effect and the normal operation of the device. Through such a continuous heat transfer and air circulation process, the new heat dissipation device for miniaturized lamps achieves efficient heat dissipation function, ensuring that the lamps continue to work in a stable temperature environment.

[0046] Beneficial effects: Highly efficient heat conduction: The excellent thermal conductivity of the thermally conductive silicone layer 11 is utilized to quickly transfer the heat generated by the COB light source to the copper base 4, and with the high thermal conductivity of copper, efficient heat collection and initial conduction are achieved.

[0047] Rapid heat transfer: The phase-change heat-conducting medium filled in the copper tube 5 undergoes a phase change after absorbing heat, absorbing a large amount of latent heat, greatly improving the speed and efficiency of heat transfer, and allowing the heat to be quickly transferred to the top along the copper tube 5.

[0048] Enhanced heat dissipation: The corrugated convex structure 12 on the surface of the aluminum sheet 6 increases the surface area. When air flows through the heat dissipation gaps between the aluminum sheets 6, the increased heat exchange area can more effectively absorb the heat on the aluminum sheets 6, thereby enhancing the heat dissipation effect.

[0049] Protection design: The air inlet 8 is provided with a dustproof net 10 to prevent dust from entering the interior of the device and to avoid the influence of heat dissipation effect due to dust accumulation; the air outlet 9 is tilted downward, which not only utilizes the principle of natural convection to facilitate the discharge of hot air, but also effectively prevents the backflow of impurities such as rainwater and dust, thereby ensuring the stable operation of the device.

[0050] Stable operation: Through the above continuous heat transfer and air circulation process, efficient heat dissipation is achieved, ensuring that the lamps continue to work in a stable temperature environment and extending the service life of the lamps.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel heat dissipation device for a miniaturized lamp, comprising a lamp body (1) and a heat dissipation mechanism (2), characterized in that: The heat dissipation mechanism (2) is installed on the top of the lamp body (1); The heat dissipation mechanism (2) comprises a cover body (3), a base (4), a copper tube (5), an aluminum sheet (6) and a heat dissipation fan (7); The cover body (3) is fixed to the top of the lamp body (1) by means of a screw connection; The base (4) is fitted and fixed to the top of the COB light source of the lamp body (1), and the top of the base (4) is connected to a plurality of vertically extending copper tubes (5); A plurality of aluminum sheets (6) are fixed laterally on the top of the copper tube (5) and are distributed at intervals, and heat dissipation gaps are formed between adjacent aluminum sheets (6); The heat dissipation fan (7) is fixed on one side of the aluminum sheet (6), and the wind direction of the heat dissipation fan (7) is set to be toward the heat dissipation gap between the aluminum sheets (6). The surface of the aluminum sheet (6) is provided with a corrugated protrusion structure (12), and the depth of the corrugated protrusion structure (12) is 0.2-0.5 mm.

2. The novel heat dissipation device for miniaturized lamps according to claim 1 is characterized in that: The cover body (3) is provided with a plurality of air inlet holes (8) on one side of the heat dissipation fan (7), and the cover body (3) is provided with a plurality of air outlet holes (9) on one side of the aluminum sheet (6).

3. The novel heat dissipation device for miniaturized lamps according to claim 2 is characterized in that: The copper tube (5) is fixedly connected to the base (4) by welding or heat-conducting adhesive, and the interior of the copper tube (5) is filled with a phase-change heat-conducting medium.

4. The novel heat dissipation device for miniaturized lamps according to claim 3 is characterized in that: The thickness of the aluminum sheet (6) is 0.5-1.2 mm, and the width of the gap between adjacent aluminum sheets (6) is 2-5 mm.

5. The novel heat dissipation device for miniaturized lamps according to claim 4 is characterized in that: The base (4) is made of copper, a dust screen (10) is provided on the inner side of the air inlet (8), and the opening direction of the air outlet (9) is inclined downward at an angle of 15°-30°.

6. The novel heat dissipation device for miniaturized lamps according to claim 5 is characterized in that: A heat-conducting silicone layer (11) is provided between the base (4) and the COB light source of the lamp body (1), and the thickness of the heat-conducting silicone layer (11) is 0.3-0.8 mm.

7. The novel heat dissipation device for miniaturized lamps according to claim 6 is characterized in that: The surface of the aluminum sheet (6) is sprayed with a graphene-based coating with a thermal conductivity of (W / m·K) 1500-2000, and the nano-particle graphene and boron nitride in the coating are embedded in micropores on the surface of the substrate.

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