LED (light-emitting diode) creative down lamp with efficient heat dissipation partition plate and manufacturing method of LED creative down lamp

Abstract

The LED down lamp comprises a lamp tube and a controller fixedly arranged at the upper end of the lamp tube, the bottom of the lamp tube is in threaded connection with a lampshade, an LED light source module is fixedly arranged on the top face in the lamp tube, and the heat dissipation partition plate connected with the interior and the exterior is fixedly arranged on the side wall of the lamp tube; the heat dissipation partition plate comprises a metal base layer which is located on the innermost layer and makes contact with air in an inner cavity of the lamp tube, a plurality of heat dissipation protruding points which are distributed in a matrix mode and protrude towards the outer side are arranged on the surface of the metal base layer in a punch forming mode, and a graphene heat dissipation coating is fixed to the outer surface of the metal base layer. The heat dissipation area is increased through the heat dissipation protruding points of the inner metal base layer, the outer graphene heat dissipation coating is combined, heat in the lamp barrel can be rapidly conducted to the outside, the heat dissipation cavity between the lamp barrel and the controller, the metal heat dissipation plate, the heat dissipation fins and the heat dissipation fan work cooperatively, and the problem of heat accumulation caused by a passive heat dissipation mode of traditional heat dissipation fins is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of downlight devices, and in particular to an LED cultural and creative downlight with a high-efficiency heat dissipation partition and a manufacturing method thereof. Background Art

[0002] Downlights are a common lighting fixture, widely used in homes, businesses, offices and many other places. They are deeply loved by users due to their embedded installation, concentrated light, and beautiful appearance. LED cultural and creative downlights combine cultural and creative elements, providing lighting functions while playing a decorative role, meeting people's current pursuit of personalized and artistic lamps. Traditional downlights are usually composed of lamp tubes, light sources, lampshades, controllers and other components. In terms of heat dissipation structure, they generally rely on the metal material of the lamp tube itself for natural heat dissipation, and some simply add some heat dissipation fins on the surface of the lamp tube to expand the heat dissipation area.

[0003] However, with the continuous increase in the power of LED light sources, the heat dissipation method of traditional downlights has exposed many defects and shortcomings. On the one hand, the heat dissipation efficiency is very limited with only the lamp tube and a small number of heat dissipation fins, and it is impossible to dissipate the large amount of heat generated by the LED light source in a timely and effective manner, resulting in excessive temperature inside the lamp body. Excessive temperature will reduce the luminous efficiency of the LED light source, increase light decay, and shorten its service life. On the other hand, when traditional heat dissipation structures are required to cope with long-term continuous lighting needs, the problem of heat accumulation becomes more and more prominent, and it is difficult to meet the requirements of long-term high-intensity lighting in commercial places or some cultural and creative display scenes that have strict requirements on light stability, which restricts the promotion and application of LED downlights in more fields. Summary of the invention

[0004] 1. Technical issues

[0005] The present invention aims to overcome the problem of poor heat dissipation performance of traditional LED downlights and provide an LED cultural and creative downlight with an efficient heat dissipation partition and a manufacturing method thereof.

[0006] (II) Technical content

[0007] In order to solve the above technical problems, the technical solution of the present invention is: an LED cultural and creative downlight with an efficient heat dissipation baffle, comprising a lamp tube and a controller fixedly arranged at the upper end of the lamp tube, a lampshade is threadedly connected at the bottom of the lamp tube, an LED light source module is fixedly arranged on the top surface of the interior of the lamp tube, a buckle is installed on the outside of the lamp tube, and a heat dissipation baffle connecting the interior and the exterior is fixedly arranged on the side wall of the lamp tube;

[0008] The heat dissipation baffle is annular and has a multi-layer composite structure. The heat dissipation baffle includes a metal base layer located in the innermost layer and in contact with the air in the inner cavity of the lamp tube. The surface of the metal base layer is stamped and provided with a plurality of heat dissipation convex points distributed in a matrix and protruding outward. A graphene heat dissipation coating is fixed on the outer surface of the metal base layer.

[0009] The controller and the lamp tube are fixedly connected by a plurality of vertical plates arranged at intervals, a heat dissipation chamber is formed between the controller and the lamp tube, a channel for cables to pass through is provided between the controller and the lamp tube, a metal heat dissipation plate is fixedly provided at the bottom of the controller and the upper end surface of the lamp tube, and a plurality of heat dissipation fins are fixedly provided on the outer surface of the metal heat dissipation plate.

[0010] Furthermore, a cooling fan is fixedly provided in one of the vertical plates, and the blowing direction of the cooling fan is the same as the length direction of the cooling fins.

[0011] Furthermore, a thermally conductive silicone pad is provided between the LED light source module and the inner top surface of the lamp tube to fill the gap between the two and enhance heat conduction.

[0012] Furthermore, a reflective layer is provided on the inner wall of the lamp tube.

[0013] Furthermore, the metal base layer has a thickness of 0.5-1 mm and is made of copper-aluminum alloy with a copper content of 60%-70%.

[0014] Furthermore, the graphene heat dissipation coating is prepared on the metal base layer by chemical vapor deposition.

[0015] Another aspect of the present invention provides a method for manufacturing an LED cultural and creative downlight with an efficient heat dissipation partition, comprising the following steps:

[0016] Step 1, heat dissipation baffle production: select copper-aluminum alloy plates, process them to a predetermined thickness, the thickness range is 0.5-1 mm, and control the copper content to 60%-70%, and wash and dry them after processing; use a mold to stamp the processed plates to form a number of heat dissipation bumps distributed in a matrix and protruding outward on the surface; use chemical vapor deposition to prepare a graphene heat dissipation coating on the surface of the plate with heat dissipation bumps to make a heat dissipation baffle;

[0017] Step 2: Production of lamp tube and reflective layer: Use extrusion process to make the raw materials into a cylindrical lamp tube, polish the inner wall of the lamp tube; use vacuum coating method to coat the inner wall of the lamp tube with a reflective layer;

[0018] Step 3, assembly of components: fix the prepared heat dissipation baffle on the side wall of the lamp tube to ensure a tight connection and connect the inside and outside of the lamp tube; fix a metal heat dissipation plate at the bottom of the controller and the upper end of the lamp tube, and fix a number of heat dissipation fins on the outer surface of the metal heat dissipation plate; fit the thermal conductive silicone pad to the top surface of the inside of the lamp tube, and then fix the LED light source module in the lamp tube, with the thermal conductive silicone pad placed in the middle; fix the controller to the upper end of the lamp tube through a plurality of vertical plates arranged at intervals, and fix the cooling fan in one of the vertical plates used to connect the controller and the lamp tube, select a suitable vertical plate to make the blowing direction of the cooling fan consistent with the length direction of the cooling fins, and a channel for cables to pass through is provided between the controller and the lamp tube; install the lampshade with a threaded connection at the bottom of the lamp tube; install the clip for fixing on the outside of the lamp tube.

[0019] (III) Technical Effect

[0020] Compared with the prior art, the advantages of the present invention are: the heat dissipation baffle adopts a multi-layer composite structure, the heat dissipation bumps of the inner metal base layer increase the heat dissipation area, and combined with the outer graphene heat dissipation coating, it can quickly conduct the heat in the lamp tube to the outside, effectively reduce the operating temperature of the LED light source module, delay light decay, and ensure long-term stable lighting. The heat dissipation chamber between the lamp tube and the controller, the metal heat dissipation plate, the heat dissipation fins and the heat dissipation fan work together to form a three-dimensional heat dissipation system, optimize the heat dissipation path, improve the heat dissipation efficiency, and solve the heat accumulation problem caused by the passive heat dissipation method of the traditional heat dissipation fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0022] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0023] Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 3 .

[0024] Figure 4 It is a main structural schematic diagram of the present invention.

[0025] Figure 5 It is a left-side structural schematic diagram of the present invention.

[0026] Figure 6 The cross-sectional structure of the present invention is schematically shown in FIG. Figure 1 .

[0027] Figure 7 The cross-sectional structure of the present invention is schematically shown in FIG. Figure 2 .

[0028] As shown in the figure: 1. Lamp tube; 2. Controller; 3. Lamp cover; 4. LED light source module; 5. Heat dissipation baffle; 6. Metal base layer; 7. Heat dissipation bumps; 8. Vertical plate; 9. Metal heat dissipation plate; 10. Heat dissipation fins; 11. Cooling fan; 12. Thermal conductive silicone pad; 13. Reflective layer; 14. Graphene heat dissipation coating; 15. Buckle; 16. Channel. DETAILED DESCRIPTION

[0029] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "provided with", "installed", "connected", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0032] Combined with Figure 1 To Attachment Figure 7 , an LED cultural and creative downlight with an efficient heat dissipation baffle, comprising a lamp tube 1 and a controller 2 fixedly arranged at the upper end of the lamp tube 1, a reflective layer 13 is arranged on the inner wall of the lamp tube 1, a lampshade 3 is threadedly connected to the bottom of the lamp tube 1, an LED light source module 4 is fixedly arranged on the inner top surface of the lamp tube 1, a heat-conducting silicone pad 12 is arranged between the LED light source module 4 and the inner top surface of the lamp tube 1, for filling the gap between the two and enhancing heat conduction, a buckle 15 is installed on the outer side of the lamp tube 1, and a heat dissipation baffle 5 connecting the inside and the outside is fixedly arranged on the side wall of the lamp tube 1;

[0033] The heat dissipation baffle 5 is annular and has a multi-layer composite structure. The heat dissipation baffle 5 includes a metal base layer 6 located at the innermost layer in contact with the air in the inner cavity of the lamp tube 1. The surface of the metal base layer 6 is stamped and provided with a plurality of heat dissipation bumps 7 distributed in a matrix and protruding outward. The outer surface of the metal base layer 6 is fixed with a graphene heat dissipation coating 14.

[0034] The controller 2 and the lamp tube 1 are fixedly connected by a plurality of vertical plates 8 arranged at intervals, a heat dissipation chamber is formed between the controller 2 and the lamp tube 1, a channel 16 for cables to pass through is provided between the controller 2 and the lamp tube 1, a metal heat dissipation plate 9 is fixedly provided at the bottom of the controller 2 and the upper end surface of the lamp tube 1, a plurality of heat dissipation fins 10 are fixedly provided on the outer surface of the metal heat dissipation plate 9, a heat dissipation fan 11 is fixedly provided in one of the vertical plates 8, and the blowing direction of the heat dissipation fan 11 is the same as the length direction of the heat dissipation fins 10.

[0035] The metal base layer 6 has a thickness of 0.5-1 mm and is made of copper-aluminum alloy with a copper content of 60%-70%. The graphene heat dissipation coating 14 is prepared on the metal base layer 6 by chemical vapor deposition.

[0036] The working principle of the LED cultural and creative downlight with an efficient heat dissipation baffle of the present invention is as follows: when the LED cultural and creative downlight is working, the LED light source module 4 generates heat. First, the heat is quickly transferred to the top surface of the lamp tube 1 through the thermal conductive silicone pad 12. The heat dissipation baffle 5 on the side wall of the lamp tube 1 plays a key role. Its innermost metal base layer 6 is directly in contact with the air in the inner cavity of the lamp tube 1. The heat is conducted to the metal base layer 6. The heat dissipation bumps 7 formed by stamping on the surface greatly increase the contact area with the air, accelerating the heat dissipation. At the same time, the graphene heat dissipation coating 14 outside the metal base layer 6 uses its excellent thermal conductivity to further efficiently guide the heat to the external environment. Secondly, the controller 2 also generates heat during operation. It is fixedly connected to the lamp tube 1 through the vertical plates 8 arranged at intervals to form a heat dissipation chamber, and the heat is diffused in this chamber. The metal heat sink 9 and the heat sink fins 10 fixed thereon increase the heat dissipation area. The heat sink fan 11 in one of the vertical plates 8 is started, and the blowing direction is the same as the length direction of the heat sink fins 10, which promotes the rapid flow of air and takes away the heat on the heat sink fins 10, accelerates the heat dissipation of the controller 2, and prevents heat accumulation.

[0037] The manufacturing method of the LED cultural and creative downlight with a high-efficiency heat dissipation partition of the present invention is as follows:

[0038] Step 1: Production of heat dissipation baffle 5:

[0039] Raw material preparation: Select copper-aluminum alloy plates, accurately control their copper content within the range of 60%-70%, use professional cutting equipment to process the plates to the predetermined thickness, the thickness requirement is 0.5-1 mm. After processing, use a special cleaning agent to thoroughly clean the plates to remove surface oil, impurities, etc., then place the plates in drying equipment and dry them at an appropriate temperature and time to ensure that the plates are dry and free of moisture residue.

[0040] Stamping: Place the processed sheet on a high-precision stamping die, start the stamping machine, and according to the die design, form a number of heat dissipation bumps 7 on the surface of the sheet that are distributed in a matrix and protrude outward, ensuring that the heat dissipation bumps 7 are regular in shape and evenly distributed to achieve the best heat dissipation effect.

[0041] Coating preparation: A graphene heat dissipation coating 14 is prepared on the surface of a plate with heat dissipation bumps 7 by chemical vapor deposition. Deposition process parameters such as temperature, pressure, gas flow rate, etc. are strictly controlled to ensure that the graphene heat dissipation coating 14 is evenly and densely attached to the surface of the metal base layer 6 to form a heat dissipation baffle 5.

[0042] Step 2: Production of lamp tube 1 and reflective layer 13:

[0043] Lamp tube 1 molding: Use extrusion technology to extrude suitable raw materials into a cylindrical lamp tube body 1, and perform dimensional accuracy inspection and trimming on the extruded lamp tube 1 to ensure that it meets the design requirements; then, use polishing equipment to polish the inner wall of the lamp tube 1 to remove burrs and rough lines on the inner wall, making the inner wall smooth and flat, providing a good foundation for the subsequent attachment of the reflective layer 13.

[0044] Reflective layer 13 coating: vacuum coating method is adopted to place the polished lamp tube 1 in the vacuum coating equipment, and a coating material with high reflectivity is selected. Under strictly controlled process conditions such as vacuum degree and evaporation rate, the reflective layer 13 is plated on the inner wall of the lamp tube 1 to ensure that the reflective layer 13 is uniform and firm, thereby effectively improving the lighting efficiency of the lamp.

[0045] Step 3: Component assembly:

[0046] Installation of the heat dissipation baffle 5: accurately position the manufactured heat dissipation baffle 5, and use welding or high-strength adhesive to fix it on the side wall of the lamp tube 1 to ensure a tight connection, connect the inside and outside of the lamp tube 1, and ensure a smooth heat dissipation channel.

[0047] Assembly of heat dissipation components: fix the metal heat dissipation plate 9 at the bottom of the controller 2 and the upper end surface of the lamp tube 1, and ensure a firm connection by riveting or screwing; then, fix a number of heat dissipation fins 10 on the outer surface of the metal heat dissipation plate 9 by welding or one-piece molding process, and ensure that the heat dissipation fins 10 are arranged neatly and evenly spaced to enhance the heat dissipation effect.

[0048] Fix the LED light source module 4: fit the thermal conductive silicone pad 12 to the top surface of the lamp tube 1, ensure that it fits tightly without bubbles, place the LED light source module 4 stably on the thermal conductive silicone pad 12, and fix it with screws or buckles to ensure that the LED light source module 4 is in full contact with the thermal conductive silicone pad 12 to facilitate heat conduction.

[0049] Assembly of controller 2: fix the controller 2 to the upper end of the lamp tube 1 through a plurality of vertical plates 8 arranged at intervals, and use welding or screws to ensure the stability of the structure; fix the cooling fan 11 in one of the vertical plates 8 used to connect the controller 2 and the lamp tube 1, and select a suitable vertical plate 8 according to the layout of the cooling fins 10 so that the blowing direction of the cooling fan 11 is consistent with the length direction of the cooling fins 10 to ensure that the air flows effectively to carry away the heat; at the same time, a channel 16 for cables to pass through is provided between the controller 2 and the lamp tube 1 to facilitate cable connection and wiring.

[0050] Installation of the lampshade 3 and the buckle 15: Install the lampshade 3 at the bottom of the lamp tube 1 by means of a threaded connection, ensuring that the threads match, the rotation is smooth, and the lampshade 3 is firmly installed; follow the buckle 15 on the outside of the lamp tube 1 to facilitate installation and removal of the lamp.

[0051] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An LED cultural and creative downlight with an efficient heat dissipation baffle, comprising a lamp tube (1) and a controller (2) fixedly arranged at the upper end of the lamp tube (1), a lampshade (3) being threadedly connected at the bottom of the lamp tube (1), an LED light source module (4) being fixedly arranged on the top surface of the interior of the lamp tube (1), and a buckle (15) being installed on the outer side of the lamp tube (1), characterized in that: The side wall of the lamp tube (1) is fixedly provided with a heat dissipation baffle (5) connecting the inside and the outside; The heat dissipation baffle (5) is annular and has a multi-layer composite structure. The heat dissipation baffle (5) comprises a metal base layer (6) located at the innermost layer and in contact with the air in the inner cavity of the lamp tube (1). The surface of the metal base layer (6) is stamped and provided with a plurality of heat dissipation protrusions (7) distributed in a matrix and protruding outward. A graphene heat dissipation coating (14) is fixed on the outer surface of the metal base layer (6). The controller (2) and the lamp tube (1) are fixedly connected via a plurality of vertical plates (8) arranged at intervals, a heat dissipation chamber is formed between the controller (2) and the lamp tube (1), a channel (16) for cables to pass through is provided between the controller (2) and the lamp tube (1), a metal heat dissipation plate (9) is fixedly provided at the bottom of the controller (2) and the upper end surface of the lamp tube (1), and a plurality of heat dissipation fins (10) are fixedly provided on the outer surface of the metal heat dissipation plate (9).

2. The LED cultural and creative downlight with a high-efficiency heat dissipation baffle according to claim 1, characterized in that: A heat dissipation fan (11) is fixedly disposed inside one of the vertical plates (8), and the blowing direction of the heat dissipation fan (11) is the same as the length direction of the heat dissipation fins (10).

3. The LED cultural and creative downlight with a high-efficiency heat dissipation baffle according to claim 1, characterized in that: A heat-conducting silicone pad (12) is provided between the LED light source module (4) and the inner top surface of the lamp tube (1) to fill the gap between the two and enhance heat conduction.

4. The LED cultural and creative downlight with a high-efficiency heat dissipation baffle according to claim 3, characterized in that: The inner wall of the lamp tube (1) is provided with a reflective layer (13).

5. The LED cultural and creative downlight with a high-efficiency heat dissipation baffle according to claim 1, characterized in that: The metal base layer (6) has a thickness of 0.5-1 mm and is made of copper-aluminum alloy with a copper content of 60%-70%.

6. The LED cultural and creative downlight with a high-efficiency heat dissipation baffle according to claim 5, characterized in that: The graphene heat dissipation coating (14) is prepared on the metal base layer (6) by chemical vapor deposition.

7. A method for manufacturing an LED cultural and creative downlight with an efficient heat dissipation partition, characterized in that: The following steps are involved: Step 1, manufacturing a heat dissipation baffle: selecting a copper-aluminum alloy plate, processing it to a predetermined thickness, the thickness range is 0.5-1 mm, and controlling the copper content to be 60%-70%, and cleaning and drying it after processing; using a mold to punch the processed plate to form a plurality of heat dissipation bumps (7) distributed in a matrix and protruding outward on its surface; using a chemical vapor deposition method to prepare a graphene heat dissipation coating (14) on the surface of the plate with the heat dissipation bumps to manufacture a heat dissipation baffle (5); Step 2: manufacturing the lamp tube and the reflective layer: using an extrusion process to make the raw materials into a cylindrical lamp tube body (1), polishing the inner wall of the lamp tube (1); and using a vacuum coating method to coat the inner wall of the lamp tube (1) with a reflective layer (13); Step 3, component assembly: fix the heat dissipation baffle (5) to the side wall of the lamp tube (1) to ensure a tight connection and connect the inside and outside of the lamp tube; fix the metal heat dissipation plate (9) at the bottom of the controller (2) and the upper end surface of the lamp tube (1), and fix a plurality of heat dissipation fins (10) on the outer surface of the metal heat dissipation plate (9); attach the thermal conductive silicone pad (12) to the top surface of the inside of the lamp tube (1), and then fix the LED light source module (4) in the lamp tube (1), with the thermal conductive silicone pad (12) placed in the middle; install the controller (2) through multiple Vertical plates (8) arranged at intervals are fixed on the upper end of the lamp tube (1); a cooling fan (11) is fixed in one of the vertical plates (8) used to connect the controller (2) and the lamp tube (1); a suitable vertical plate (8) is selected so that the blowing direction of the cooling fan (11) is consistent with the length direction of the cooling fins (10); a channel (16) for the cable to pass through is provided between the controller (2) and the lamp tube (1); a lampshade (3) is threadedly installed at the bottom of the lamp tube (1); and a buckle (15) for fixing is installed on the outside of the lamp tube (1).

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