CN201434247Y - A SMD LED Lighting Universal Light Source Body with Heat Dissipation Design - Google Patents

Abstract

The utility model proposes an SMD-type LED lighting general light source, which is provided with SMD-type elements, an aluminum base printed wiring board of the SMD-type elements and lead wire led outform the aluminum base printed wiring board are installed in a welding way; the aluminum base printed wiring board is assembled in an aluminum alloy block, the aluminum alloy block is in a groove shape, a thin layer of high-performance gelatinous thermal- conducting material is arranged between the bottom surface of the aluminum base printed wiring board and the groove bottom of the aluminum alloy block. The SMD-type LED lighting general light source has simple structure, good thermal conductivity, and good universality and interchangeability.

Description

A SMD LED Lighting Universal Light Source Body with Heat Dissipation Design

technical field

The utility model belongs to the technical field of LED light source lighting.

Background technique

The current fluorescent tube lighting generally adopts the method of coating the inner wall of the glass lamp tube with fluorescent material and filling the lamp tube with mercury vapor. Compared with the original tungsten filament solid light emitting method, this method has a great improvement in photoelectric conversion efficiency. It has been widely used all over the world, but the pollution of mercury metal to the environment cannot be ignored.

As a new type of high-efficiency, green and environmentally friendly luminescent material, LED has been widely used in various fields such as landscape lighting and signal display. However, there are still many technical problems in how this luminescent material can be combined with traditional lighting methods to be more widely used in the field of general lighting. There are two most important technical issues and a cost issue: the first technical issue is how to make a universal light source body so that it has versatility and interchangeability. At present, the general LED lamps only solder LED components on various types of circuit boards, and use various structures to make different types of lamps, so each is a special product, and the light source itself has no versatility. As a result, the after-sales service is difficult, and the product is not easy to popularize and apply; the second technical problem is how to make the general light source body itself have good heat dissipation, thereby reducing the light decay of the general light source body and prolonging the service life. At present, although there are also LEDs that use glass tubes or organic materials similar to existing fluorescent tubes as shells to form a general light source body, their appearance and use are close to traditional fluorescent tubes, but they do not effectively solve the problem of heat dissipation; the other is The cost issue, that is, how to control the production cost within a very low range on the premise of achieving the above two goals.

Contents of the invention

The utility model aims at the deficiencies of the prior art, and aims to provide a universal and interchangeable general purpose light source body for patch type LED lighting with heat dissipation design, which is simpler in structure, has good thermal conductivity.

The technical scheme of the utility model is as follows:

A general-purpose light source body for SMD LED lighting with a heat dissipation design, which has a SMD LED component, an aluminum substrate printed circuit board for welding and installing the LED component, and wires drawn from the printed circuit board; the aluminum substrate printed circuit board The printed circuit board is assembled in an aluminum alloy seat, the aluminum alloy seat is a groove type, and a patch-type LED element is welded on the welding surface of the printed circuit board of the aluminum substrate, and the gap between the aluminum substrate and the groove bottom of the aluminum alloy seat Plus a very thin layer of high-performance gel-like thermally conductive material. Due to the limitations of the metal machining process, it is actually difficult to form a complete surface contact between the aluminum substrate and the groove bottom of the aluminum alloy seat, resulting in a large thermal resistance. Therefore, between the aluminum substrate and the groove bottom of the aluminum alloy seat Adding a thin layer of high-performance gel-like heat-conducting material can improve the effect of heat dissipation.

The gel-like heat-conducting material layer is made of heat-conducting silicone rubber or other gel-like or paste-like heat-conducting materials. The component surface of the printed circuit board can be filled with waterproof insulating glue.

The bottom of the aluminum alloy seat is arranged with divergent heat sinks, and the two ends of the universal light source body are equipped with pins matching the fluorescent lamp tube frame.

The utility model has the following advantages:

1. The heat dissipation structure is reasonably designed on the structure of the light source body, which can reduce the heat conduction route from the LED chip to the printed circuit board, so that the heat of the lamp body can pass through the aluminum substrate printed circuit board and heat conduction when the light-emitting diode is powered on. The silica gel quickly conducts to the aluminum alloy seat, so that the heat can be dissipated quickly, thereby reducing the working temperature of the LED lamp body, which has a better heat dissipation effect than the ordinary printed circuit board, and solves the heat dissipation of the LED from the component to the lamp as a whole. The light attenuation of the finished lamps can be effectively controlled, thereby prolonging the service life of the LED lamps. According to experiments, it is shown that the light decay of the light emitting diode can be reduced by 50%-80% due to the solution of heat dissipation.

2. Different from other LED light source application methods, since the light source body has an independent heat dissipation structure, standard connectors are used to realize the connection with the power supply, so several fixed standard sizes can be designed and applied to various types of lamps In, there is no need to design a light source body for each lamp, so it has good versatility and interchangeability. This universal light source body can be used as a standard general light source body, and it can be directly applied to various types of lamps with various types of standard power sources (12V, 24V, 110V, 220V, etc. AC and DC), and can be used in different environment. It solves the disadvantages that general lamp manufacturers use LED components to make products with inconsistent specifications, no interchangeability, and difficult after-sales service when developing LED lamps. It makes the maintenance and replacement of LED lamps as convenient for users as traditional lamps.

3. The structure is simple, the manufacturability is good, and the qualification rate is high, which reduces the manufacturing cost of LED application lamps and lanterns, and is easy to install, making it more widely applicable to the market.

Description of drawings

Figure 1: A cross-sectional structure diagram of the general light source body;

Figure 2: It is the appearance diagram of the strip structure of the universal light source body;

Detailed ways

Now further illustrate the structure of the present utility model in conjunction with accompanying drawing:

Referring to Fig. 1 and Fig. 2, the SMD LED element 2 is welded on the printed circuit board 1 of the aluminum substrate, the printed circuit board 1 of the aluminum substrate is engaged in the groove of the aluminum alloy seat 3, and the bottom surface of the printed circuit board 1 of the aluminum substrate is in contact with the aluminum A very thin layer of high-performance gel-like heat-conducting material layer 4 is added to the bottom of the groove of the alloy seat, and waterproof insulating glue 5 can be filled in the component surface of the aluminum substrate printed circuit board 1 to form a sealed and waterproof structure. Optical resin cover plate 6. The bottom of the aluminum alloy seat is arranged with divergent heat sinks.

Elongated universal light source body as shown in Figure 2, pin 7 is arranged at the two ends of this universal light source body 9, and this pin is the same with traditional fluorescent lamp pin, and the power line of universal light source body is drawn by this pin, can It is installed on a traditional fluorescent tube frame, so it is more versatile and replaceable to install and fix it with the pins of this traditional fluorescent tube. Of course, this pin can also play the role of clamping with the fluorescent lamp tube frame, not as a power lead wire. The power wire of the general light source body is led out from the bottom of the aluminum alloy seat or one end of the lamp body with a wire 8, and sealed well. The outlet is connected with the power supply box 11 through various ready-made connectors 10, and 12 is the input end of the power supply.

The universal light source body can be made into 10cm, 20cm, 40cm, 100cm or other standard lengths according to power and needs.

Claims (6)

1. A general-purpose light source body for patch-type LED lighting with heat dissipation design, which has a patch-type LED component, an aluminum substrate printed circuit board for welding and installing the LED component, and wires drawn from the aluminum substrate printed circuit board; It is characterized in that: the printed circuit board of the aluminum substrate is assembled in an aluminum alloy seat, the aluminum alloy seat is groove-shaped, and a high-performance glue is arranged between the bottom surface of the printed circuit board of the aluminum substrate and the groove bottom of the aluminum alloy seat layer of thermally conductive material. 2. The SMD LED lighting universal light source body with heat dissipation design according to claim 1, characterized in that: the gel-like heat-conducting material layer is made of heat-conducting silicone rubber or other gel-like or paste-like heat-conducting materials. 3. The SMD LED lighting universal light source body with heat dissipation design according to claim 1 or 2, characterized in that: the component surface of the printed circuit board of the aluminum substrate is filled with waterproof insulating glue. 4. The LED lighting general light source body with heat dissipation design according to claim 3, characterized in that: the aluminum substrate printed circuit board and the corresponding aluminum alloy seat are both strip-shaped, forming a strip-shaped general light source body. 5. The LED lighting universal light source body with heat dissipation design according to claim 3, characterized in that: both ends of the bar-shaped universal light source body are equipped with pins matching the fluorescent lamp tube frame. 6. The LED lighting universal light source body with heat dissipation design according to claim 3, characterized in that: the bottom of the aluminum alloy seat is arranged with diverging fins.

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