CN201297525Y - LED lamp with good heat dissipation structure - Google Patents

Abstract

The utility model improves the aluminum extrusion or die-casting heat dissipation structure of the previous LED lamps, and specifically refers to an LED lamp that uses a ventilation hole power socket module and a ventilation hole lampshade to form a high heat dissipation efficiency, and then uses a plurality of streamlined streamlined curved heat sinks stacked around a ring-shaped heat dissipation module to greatly improve its heat dissipation effect.

Description

An LED lamp with good heat dissipation structure

technical field

The utility model relates to an LED lamp, in particular to an LED lamp with a good heat dissipation structure.

Background technique

Environmental protection, energy saving and carbon reduction is the current trend in the world. LED solid-state lighting demands power saving and energy saving. Due to the high-brightness LEDs widely used at present, high temperatures will be generated during use, so appropriate heat dissipation methods must be used to dissipate the heat of the high-brightness LEDs , the calorific value of high-brightness LED chip modules is getting higher and higher, making heat dissipation an important issue in maintaining the normal operation of the LED lighting system. Usually, a heat sink is attached to the surface of the heating element of the LED chip module to remove heat from the LED lighting system. In addition, to prevent the LED chip module components from overheating and light decay and prolong the service life of the components.

The heat dissipation method of LED lamp lighting system mainly relies on natural convection to take away the heat. At present, the disadvantages of traditional LED lamp lighting heat dissipation are as follows:

(1) The power supply base of LED lamps is airtight and not ventilated: the traditional power supply module only uses a shell to cover the circuit board (pcb). And burnt, the life of lamps and lanterns power socket is shortened.

(2) The lampshade of LED lamps is not airtight:

The traditional LED substrate module lampshade only uses a shell to cover the LED substrate module. There are no ventilation holes, airtight and poor heat dissipation. The high temperature parts on the LED often overheat and cause light failure.

(3) Insufficient surface area of LED lamp radiator:

The radiators used in general LED lamps can be divided into three types according to the manufacturing method and type: aluminum extrusion type (Figure 1), die-casting type (Figure 2) and planar fin stacked type (Figure 3). The manufacture of aluminum extruded or die-cast heat sinks cannot be made very thin due to limited machining capabilities. Therefore, the number of heat sinks combined is greatly limited, making the density (total heat dissipation area per unit volume) relatively low. Low, while the stacked type can be made very thin, so its density is higher, that is, the total heat dissipation area per unit volume is larger, so it has a greater heat dissipation capacity. Furthermore, the stacked type currently mostly uses straight sheet stacking to manufacture heat sinks, and the surface area of the straight sheet stacked type of LED lamps is still insufficient.

It can be known from the above that the above-mentioned structure of the LED lamp can be improved in terms of heat dissipation efficiency.

The inventors of the utility model feel that the heat dissipation efficiency of the above LED lamps can be improved, and propose a structural design of the LED lamps that can increase the heat dissipation efficiency.

Contents of the invention

The main purpose of this utility model is to improve the lack of heat dissipation structure of traditional LED lamps and lanterns, and provide a kind of LED substrate module, ventilation hole power base module and ventilation hole lampshade, combined with a plurality of streamline curved surface heat sinks stacked to form a ring heat dissipation modules to form an LED lamp with high heat dissipation efficiency.

Because the shape of the heat sink is designed as a streamlined curved surface, the streamlined curved surface can increase the heat dissipation surface area and allow the fluid to flow smoothly, so that the heat dissipation efficiency can be increased, and the air vent power base module and the air vent lampshade can allow the The fluid convection is smoother, so the heat dissipation efficiency of LED lamps is higher.

In order to achieve the main purpose of this utility model, an LED lamp with good heat dissipation structure is provided. The main composition and structure of the LED lamp are as follows:

(1) Air vent lampshade (Fig. 10), (2) Air vent power socket module (Fig.), (3) Streamline curved surface heat dissipation module (Fig. 6) and (4) LED substrate module (Fig. 8), among which,

(1) Air vent lampshade

The traditional LED substrate module lampshade only uses a shell to cover the LED substrate module. Due to the lack of ventilation and poor heat dissipation, the high-temperature parts on the LED often overheat and cause light failure.

The ventilation hole lampshade of the utility model is designed with inner and outer double shells. The LED substrate module is placed in the inner shell, and the bottom of the inner shell can be glued to the top of the LED substrate module or the top of the heat dissipation module. After the surface, the LED substrate module is sealed in the inner shell, which can achieve the purpose of dustproof and waterproof, and the lampshade shell is provided with ventilation holes, which can make the fluid convection between the inner shell and the outer shell smoother and increase the heat dissipation efficiency.

(2) Air vent power socket module

The traditional power base module only uses a shell to cover the circuit board (pcb), which is not airtight and has poor heat dissipation, so that high-temperature components on the circuit board often overheat and burn out.

The power base module is designed with inner and outer double shells. The circuit board is placed in the rectangular inner shell, and the inner shell is filled with heat-conducting glue, which can prevent dust and water, and has the function of heat conduction. The seat shell is provided with ventilation holes, which can make the fluid convection flow more smoothly and increase the heat dissipation efficiency.

(3) Streamlined surface cooling module:

It is composed of several single streamlined curved heat sink joints. Each single heat sink includes a body, and its side is connected with a fan-shaped folded edge. The two ends of the fan shape have the same center of circle, but two sections of different sizes formed by different radii The circular arc is punched with a groove in the middle of the body, and a plurality of single-line curved surface heat sinks are closely arranged and combined into a closed ring by using the abutment part, and the groove of each heat sink also forms a closed ring. In addition, there is a ring buckle with the same size as the ring, which can be placed in the groove to position the heat sink and prevent the heat sink from shifting to the center of the heat sink. Most heat sinks are stacked around the buckle to form a ring, forming a streamlined surface Cooling module.

(a) The heat sink is designed as a streamlined curved surface: it allows the fluid to pass through more smoothly, increases the flow rate, and improves the thermal efficiency.

Streamlined surface design can be optimized according to the flow field, and can be designed into various streamlined surfaces, such as complex and irregular multi-curved surfaces, hyperboloids, S-shaped twisted surfaces, single curved surfaces, arc curved surfaces, etc.

(b) The radiating fins are designed so that the hems can be snapped together, which is easy to assemble. Most of the radiating fins are buckled into a string by the frills on the side 4e.

(c) The fan-shaped edge at the bottom of the heat sink is folded upwards to form type

(c1) Scalloped edges can maintain accurate dimensions: the fan-shaped radiating fins can be stacked to form a ring, and the bottom scallops of most fan-shaped radiating fins are closely connected to each other to form a circular ring to avoid overlapping.

(c2) Scalloped edges and then folded upwards type

Generally, the fan-shaped hem has an R angle. When the assembly is poor, there may still be a little overlap between the two pieces, so the hem should be folded upwards. type, there will be no overlap at all.

(d) Loop buckle: it has two functions:

(1) Heat sink positioning: When most heat sinks are stacked around the buckle to form a ring, the inner part of the heat sink is designed with a groove, and the groove is also formed around the ring. Put the shaped buckle into the groove to position the heat sink to prevent The cooling fins are offset towards the center of the heat sink.

(2) Fixing the power base: There are two ways: the ring buckle is designed with tapping screw holes, and the plastic base of the power supply is designed with screw holes, and the power base is locked on the ring buckle with screws.

(4) LED substrate module

The LED substrate uses a metal substrate with high thermal conductivity.

Compared with the prior art, the LED lamp described in the utility model, because the shape of the heat sink is designed as a streamlined curved surface, the streamlined curved surface can increase the heat dissipation surface area, and can make the fluid flow smoother, so it can increase Heat dissipation efficiency, and the ventilation hole power base module and the ventilation hole lampshade can make the fluid convection smoother, so the heat dissipation efficiency of the LED lamp is higher.

Description of drawings

Fig. 1 is a perspective view of an LED lamp with an existing die-cast heat dissipation structure;

Fig. 2 is a perspective view of an LED lamp with an existing aluminum extruded heat dissipation structure;

Fig. 3 is a perspective view of an existing LED lamp with a stacked planar fin structure;

Fig. 4 is a perspective view of an LED lamp with a streamlined curved surface heat dissipation structure of the present invention;

Fig. 5 is a combination diagram of an LED lamp with a streamlined curved surface heat dissipation structure of the present invention;

Fig. 6 is a combination diagram of the streamlined curved surface cooling module of the utility model;

Fig. 7A, Fig. 7B, Fig. 7C and Fig. 7D are perspective views of the single-chip streamlined curved surface heat sink of the utility model;

Fig. 8A, Fig. 8B, and Fig. 8C are three-dimensional views of LED lamps with a streamlined curved surface heat dissipation structure of the present invention;

Fig. 9 is a perspective view of the utility model ring buckle;

Fig. 10A, Fig. 10B, Fig. 10C, and Fig. 10D are three-dimensional views of the vent lampshade of the present invention;

Fig. 11A, Fig. 11B, Fig. 11C and Fig. 11D are three-dimensional views of the ventilation hole power base module of the utility model.

Explanation of reference signs: 1a-LED lamp with die-casting heat dissipation structure; 1aa-die-casting heat sink module; 1ab-airtight lampshade; 1ac-airtight power socket; 1ad-LED substrate module; Aluminum extruded heat sink module; 1bb-airtight lampshade; 1bc-airtight power base; 1c-LED lamp with plane stacked heat sink structure; 1ca-aluminum extruded heat sink module; 1cb-airtight lampshade; LED lamps with linear curved surface heat dissipation structure; 11-heat dissipation module; 111-single streamlined curved surface heat sink; 111a-streamlined curved surface body; 111b-fan-shaped folding edge; 12-ring buckle; 12a-buckle body; 12b-screw hole; 13-air vent lampshade; 13a-lampshade shell; 13b-ventilation hole; 13c-lampshade inner shell; 14-LED substrate module; 14a-LED unit; 14b-heat transfer substrate; 15-ventilation hole power base module; 15a-power base body shell; 15b-ventilation hole; 15c-power PCB board; Square inner shell.

Detailed ways

The above-mentioned and other technical features and advantages of the present utility model will be described in more detail below in conjunction with the accompanying drawings.

Please refer to Fig. 4 to Fig. 11. The utility model provides an improved heat dissipation structure 1 of an LED lamp, and its main composition and structure are as follows:

(1) Air vent lampshade 13 (Fig. 4 to Fig. 5 and Fig. 10)

The traditional LED substrate module lampshade 1a (Fig. 1) only uses a shell 1ab to enclose the LED substrate module 1ad. Due to the airtightness, the heat dissipation is poor, and the high-temperature parts on the LED substrate module often overheat and cause light decay.

The ventilation hole lampshade 13 of the present utility model adopts the design of inner and outer double shells (13c, 13a), and the LED substrate module 14 composed of the LED unit 14a and the heat transfer substrate 14b joined by the LED unit 14a is placed inside In the shell 13c (FIG. 10), the bottom edge 131C of the inner shell 13c (FIG. 5 and FIG. 10) is glued to the LED substrate module 14 or the top of the heat dissipation module 11 by spot glueing, and at the same time, the bottom of the shell 13a is The edge and the top of the heat dissipation module 11 (Fig. 5 and Fig. 6) are also bonded to form a closed space, so that the LED substrate module 14 is sealed in the inner shell 13C, which can achieve the purpose of dustproof and waterproof, while the lampshade shell 13a is provided with ventilation holes 13b, which can make fluid convection flow more smoothly and increase heat dissipation efficiency.

(2) Air vent power base module 15 (Fig. 5 and Fig. 11)

The traditional power supply module only uses a shell 1ac (Fig. 1) to enclose the circuit board (pcb). Due to the lack of ventilation, the heat dissipation is poor, and the high-temperature parts on the circuit board are often overheated and burned.

The power base module is designed with inner and outer double shells, and the circuit board (pcb) 15c (Fig. 11B) is placed in the rectangular inner shell 15e, and the inner shell is filled with heat-conducting glue, which can prevent dust and water, and also has the function of heat conduction. It can cool down the high-temperature parts on the circuit board. The power base housing 15a (FIG. 11B) is provided with ventilation holes 15b (FIG. 11B), which can make the fluid convection flow more smoothly and increase the heat dissipation efficiency.

(3) Heat dissipation module 11 (FIG. 6):

(a) The heat sink is designed as a streamlined curved surface 111a (FIG. 7B): it allows the fluid to pass through more smoothly, increases the flow rate, and improves the thermal efficiency.

Streamlined surface design can be optimized according to the flow field, and can be designed into various streamlined surfaces, such as irregular multi-curved surfaces, hyperboloids, S-shaped twisted surfaces, single-curved surfaces or arc-shaped surfaces, etc.

(b) The heat sinks are designed as fan-shaped folds 111b (Fig. 7B), which can be snapped together and are easy to assemble. Most heat sinks are buckled by folds into a string, and when stacked around the buckles to form a ring, it is easy to assemble, and there is no need to separate them one by one. .

(c) The fan-shaped edge at the bottom of the heat sink is folded upwards to form Type 111d (Fig. 7D)

(c1) Scalloped edge 111b (FIG. 7B), which can maintain accurate dimensions: the fan-shaped radiating fins can be stacked to form a ring, and the bottoms of most fan-shaped radiating fins are closely connected to each other to form a circular ring to avoid overlapping.

(c2) Scalloped edges and then folded upwards Type 111d (Fig. 7D)

Generally, the fan-shaped hem has an R angle. When the assembly is poor, there may still be a little overlap between the two pieces, so the hem should be folded upwards. type, there will be no overlap at all.

(d) ring fastener 12 (Fig. 9): there are two major functions:

(1) Heat sink positioning:

When most heat sinks are stacked and buckled around to form a ring, a groove 111e (Fig. 7C) is designed on the inner side of the heat sink, and the groove is also surrounded to form a ring. Put the ring buckle into the groove to position the heat sink. Prevents fins from shifting toward the center of the heatsink.

(2) Fixing the power base 12 (Fig. 1): There are 2 ways:

Tapping screw holes 15 are designed on the ring buckle (Fig. 11B), and the plastic base of the power supply is designed with screw holes, and the power base is locked on the ring buckle by screws.

(4) LED substrate module

The LED substrate uses a metal substrate with high thermal conductivity.

The above description is only illustrative of the present utility model, rather than restrictive. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. , or equivalent, but all will fall within the protection scope of the present utility model.

Claims (13)

1. An LED lamp, characterized in that it comprises: at least one LED unit; A heat transfer substrate, the LED unit is combined on the heat transfer substrate to form an LED substrate module; A heat dissipation module, which is connected with the heat transfer substrate, so that the heat generated by the LED unit is dissipated into the atmosphere by the heat dissipation module; A circuit board, including at least one circuit loop, electrically connected to the LED unit combined with the heat transfer substrate; A power supply base, which is a hollow shell, and the circuit board is arranged in the power supply base; and A lampshade covers the LED unit, and the lampshade is provided with ventilation and cooling holes. 2. The LED lamp according to claim 1, wherein the heat dissipation module is surrounded by a plurality of adjacently stacked heat dissipation fins to form a ring structure. 3. The LED lamp according to claim 2, wherein the heat sink is a streamlined curved surface. 4. The LED lamp according to claim 3, wherein the streamline curved surface is designed as a multi-curved surface, a hyperbolic surface, an S-shaped twisted surface, a single curved surface or an arc curved surface. 5. The LED lamp according to claim 2, 3 or 4, characterized in that the bottom of the heat sink is fan-shaped folded, the fan-shaped folded heat sinks are stacked in a ring, and the bottoms of the plurality of fan-shaped folded heat sinks are fan-shaped. Closely connected to form a circular ring. 6 . The LED lamp according to claim 5 , wherein the bottom of the heat sink is fan-shaped and then upwardly folded to form a ㄩ shape, and when multiple fan-shaped heat sinks are stacked to form a ring. 7. The LED lamp according to claim 2, 3 or 4, characterized in that, the heat sink is ring-shaped and buckled up and down. 8. The LED lamp according to claim 2, 3 or 4, characterized in that, the heat sink is buckled by a ring-shaped side. 9. The LED lamp as claimed in claim 2, 3 or 4, characterized in that, when a plurality of cooling fins are stacked and buckled around to form a ring, grooves are designed on the inner side of the cooling fins, and the grooves also form a ring around, A ring buckle is placed in the groove to position the heat sink and prevent the center from shifting. 10. The LED lamp according to claim 9, wherein the ring fastener is provided with a tapping screw hole, and the power base is provided with a screw through hole, and the power base is locked on the said power base by screws. On the ring buckle. 11. The LED lamp according to claim 1, 2, 3 or 4, wherein the lampshade is designed with inner and outer double shells, the LED unit is wrapped in the inner shell of the lampshade, and the outer shell of the lampshade Features ventilation holes. 12. The LED lamp according to claim 1, 2, 3 or 4, wherein the power supply base is provided with ventilation and cooling holes. 13. The LED lamp according to claim 1, 2, 3 or 4, wherein the power supply base adopts an inner and outer double shell design, and the inner shell of the power base is filled with heat-conducting glue, and the circuit board The upper high-temperature parts are cooled; the power supply base shell is provided with ventilation holes.

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