CN201116698Y - Light emitting diode device - Google Patents

Abstract

The utility model discloses a LED device contains pedestal, LED component, electrode piece and insulating layer. The side surface of the base body is in an oblique angle and is used for being embedded into the corresponding bearing base and conducting as an electrode, such as a negative electrode. The LED element is positioned on the upper surface of the base body. The electrode member includes a metal upright post and an electrode pad base electrically connecting the LED element as an electrode conduction, such as a positive electrode. The insulating layer is arranged between the electrode plate base and the base body and used for electrical insulation between the electrode plate base and the base body. The oblique angle of the seat body can be adjusted as required, generally less than 10 degrees, preferably less than 5 degrees, and less than 3 degrees can be selected as required.

Description

LED device

technical field

The utility model relates to a light emitting diode (Light Emitting Diode; LED) device.

Background technique

In recent years, white light-emitting diodes (LEDs) are the most promising emerging products that attract global attention. It has the advantages of small size, low power consumption, long life and good response speed, etc., and can solve the problems that incandescent bulbs were difficult to overcome in the past. The application of LEDs in markets such as display backlights, mini projectors, lighting and automotive light sources has attracted more and more attention.

At present, countries such as Europe, America and Japan are actively developing white light-emitting diodes as a new light source for lighting in this century based on the consensus of energy conservation and environmental protection. In addition, many countries currently rely on imports of energy, making its development in the lighting market extremely valuable. According to expert evaluation, if Japan replaces all incandescent lamps with white light-emitting diodes, it can save the power generation of 1 to 2 power plants every year, indirectly reduce fuel consumption by 1 billion liters, and emit carbon dioxide during power generation. It will also be reduced, thereby inhibiting the greenhouse effect. Based on this, advanced countries such as Europe, America and Japan have invested a lot of manpower to promote research and development. It is expected that in the next ten years, traditional lighting fixtures can be generally replaced.

However, for high-power LEDs for lighting, only about 15-20% of the power input to the LED is converted into light, and the remaining 80-85% is converted into heat. If the heat cannot be dissipated to the environment in a timely manner, the interface temperature of the LED element will be too high, which will affect its luminous intensity and service life. Therefore, the problem of thermal management of LED components has been paid more and more attention.

Referring to FIG. 1 , a conventional LED device 10 includes an LED element 11 and a connection base 16 . The LED element 11 encapsulates the LED circuit chip 13 in the glue 14 and is carried by the base 12 . Electrode strips 15 are provided on both sides of the base 12 as positive and negative poles of the LED element 11 . The LED element 11 is installed on the surface of the connecting base 16 for connecting a conduction circuit and dissipating heat.

However, the heat dissipation effect of the conventional LED device 10 is not good, and encounters a bottleneck in the application of high-power LEDs. In addition, the assembly of the LED device 10 is cumbersome and complicated, and the electrode strips 15 of the LED elements 11 need to be soldered for circuit conduction, which is not conducive to improving manufacturing efficiency and reducing costs.

Contents of the invention

The utility model provides an LED device, which is designed with an oblique angle, so that the LED device can be easily embedded in a corresponding bearing seat. Not only is it easy to assemble, but because of its simple structure, the manufacturing cost can also be reduced. In addition, due to the good effect of the embedded heat sink, the heat dissipation efficiency of the LED element can be further improved.

The LED device of the utility model comprises a seat body, an LED element, an electrode part and an insulating layer. The side of the seat is beveled, and is used for embedding the corresponding bearing seat and conducting as an electrode, such as a negative pole. The LED element is located on the upper surface of the base. The electrode member is electrically connected to the LED element as an electrode conduction, such as an anode. The insulating layer is arranged between the electrode sheet base of the electrode member and the base body for electrical insulation between the two.

In one embodiment of the present invention, the seat body is a cylinder with a wide top and a narrow bottom. The diameter of the electrode sheet is smaller than the diameter of the lower surface of the seat body, so that the electrode sheet and the seat are electrically insulated after the LED device is embedded in the seat.

The bevel angle of the seat body can be adjusted as required, generally less than 10 degrees, preferably less than 5 degrees, and less than 3 degrees can also be selected according to needs.

The LED device of the utility model has a simple structure, and is fixed on the bearing seat by direct embedding, so no thread design is required for the combination. And because the entire side of the beveled seat body contacts the corresponding bearing seat, the efficiency of electrical conduction or heat conduction between them can be significantly improved, and even a good heat conduction effect can be obtained without the need for thermal conductive glue as an interface.

Description of drawings

Fig. 1 is a schematic diagram of a conventional LED device;

Fig. 2 (a) and 2 (b) are the schematic diagrams of the LED device of the present utility model;

3 is an exploded view of the LED device of the present invention; and

Fig. 4, Fig. 5(a) and 5(b) are application schematic diagrams of the LED device of the present invention.

Detailed ways

Fig. 2(a) shows a schematic diagram of the LED element of the present invention, and Fig. 2(b) is a side view thereof. The LED device 20 includes a base body 21 , an LED element 22 , an insulating layer 25 , and an electrode member including a metal upright column 28 and an electrode base 26 . The LED element 22 includes an LED circuit chip 24 implanted on the surface of the base body 21 and encapsulated in the area defined by the outer frame 23 with colloid. The first electrode of the LED circuit chip 24 is electrically connected to the base body 21 , and the second electrode of the LED circuit chip 24 is electrically connected to the top of the metal vertical post 28 . In this embodiment, the electrode base 26 and the metal upright column 28 serve as the positive pole of the LED device 20 , while the base body 21 serves as the negative pole of the LED device 20 . The insulating layer 25 is stacked between the base body 21 and the electrode base 26 , and the hollow insulating column 29 is stacked between the base body 21 and the metal upright column 28 for positive and negative isolation.

The LED device 20 of the present invention adopts an embedded design, that is, it is used to be embedded in a corresponding bearing seat. For this reason, the seat body 21 is a cylinder with a wide top and a narrow bottom. Its side 27 adopts oblique angle design. The angle of the bevel is less than 10 degrees relative to the vertical, preferably less than 5 degrees, and may be less than 3 degrees if necessary. In this way, the LED device 20 can be directly pressed into and fitted into the bearing seat with a corresponding oblique angle design.

FIG. 3 is an exploded schematic view of the LED device 20 . The electrode piece base 26 and the metal upright column 28 form an electrode piece 40, wherein the metal upright column 28 is arranged in the center of the electrode piece base 26, penetrates through the base body 21 and forms a positive pole with the LED element 22 connect. A hollow insulating post 29 protrudes from the center of the insulating layer 25 for electrical insulation between the metal upright post 28 and the base 21 .

Referring to FIG. 4 , the bearing seat 30 (or called an adapter ring) is formed by connecting the flange 31 above the ring body 33 . The angle of the inner side surface 32 of the bearing seat 30 corresponds to the oblique angle of the side surface of the LED device 20 , so the LED device 20 can be inserted into the bearing seat 30 smoothly. The diameter (or width) of the insulating layer 25 and the electrode sheet base 26 is smaller than the diameter of the lower surface of the seat body 21 (see FIG. 2(b)), so when the LED device 20 is embedded in the bearing seat 30, the The side surface 27 of the seat body 21 will be tightly bonded to the inner surface 32 of the bearing seat 30 to form the electrical connection of the negative pole and be used for heat conduction, while the electrode sheet base 26 will not contact the ring body 33, but will serve as the positive pole .

Fig. 5(a) is an application example of the present utility model, and Fig. 5(b) is a cross-sectional view thereof. In the LED lighting module 50, the LED device 20 is embedded in the base body 53, the base body 53 is used as the negative pole, the electrode piece 51 below the base body 53 is used as the positive pole, and an insulating layer 52 is provided between the base body 53 and the electrode piece 51 , for positive and negative isolation. A conductive contact 54 is provided under each LED device 20 to connect to the positive electrode 51 .

According to the design of the utility model, the bottom electrode and the side surface of the LED device are used as its positive and negative electrodes without the need for the setting of external electrode strips, and the LED device can be easily embedded in the corresponding bearing seat without other welding process. Therefore, the LED device of the present invention can greatly simplify the assembly and further reduce the cost.

The technical content and technical features of the present utility model have been disclosed above, but those skilled in the art may still make various replacements and modifications based on the teaching and disclosure of the present utility model without departing from the spirit of the present utility model. Therefore, the protection scope of the utility model should not be limited to the contents disclosed in the embodiments, but should include various replacements and modifications that do not depart from the utility model, and are covered by the appended claims.

Claims (8)

1. A light-emitting diode LED device, characterized in that comprising: The seat body, the side of which is beveled, is used to embed the corresponding bearing seat; LED element, which is located on the upper surface of the seat, and its first electrode is electrically connected to the seat; An electrode member, which includes an electrode sheet base and a metal upright column, which is electrically connected to the second electrode of the LED element; as well as The insulating layer is arranged between the base of the electrode sheet and the base body for electrical insulation between the two. 2. The light-emitting diode (LED) device according to claim 1, wherein the base is a cylinder with a wide top and a narrow bottom. 3. The light-emitting diode (LED) device according to claim 1, wherein the diameter of the electrode sheet base is smaller than the diameter of the lower surface of the seat body, so that the electrode sheet base and the electrode sheet base are connected to each other after the LED device is embedded in the corresponding bearing seat. The bearing seat forms electrical insulation. 4. The light-emitting diode (LED) device according to claim 1, wherein the oblique angle is less than 10 degrees relative to the vertical plane. 5. The light-emitting diode (LED) device according to claim 1, wherein the oblique angle is less than 5 degrees relative to the vertical plane. 6. The light-emitting diode (LED) device according to claim 1, wherein the electrode member is used as the positive pole of the LED element, and the side surface of the seat is used as the negative pole of the LED element. 7. The light-emitting diode (LED) device according to claim 1, wherein the metal upright column protrudes from the center of the electrode sheet, penetrates the base body, and is electrically connected to the LED element. 8. The light-emitting diode (LED) device according to claim 1, wherein a hollow insulating post is provided in the center of the insulating layer for electrical insulation between the metal upright post and the base.

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