WO2011143816A1 - Led illumination lamp - Google Patents

Abstract

An LED illumination lamp comprises a lamp cap (60), an insulator (20), a circuit board (50), a heat radiator (10), an LED board (30) and a lamp cover (40). The insulator (20) includes an insulation base (22) and an insulation sleeve (21). The circuit board (50) is fixed in the insulation sleeve (21) that is fixed in the heat radiator (10). The lamp cap (60) is fixed on the lower end of the insulator (20). The LED board (30) is fixed on the upper surface of the heat radiator (10) and covered by the lamp cover (40). Utilizing the insulation sleeve fixed in the heat radiator, the circuit board can be protected from dust, water, short circuit and electric leakage, thus the safety and reliability of the LED illumination lamp can be greatly improved.

Description

 LED lighting bulb Technical field

The invention relates to the field of LED lighting bulbs, in particular to an LED lighting bulb with a circuit board protection structure, stable conduction, convenient maintenance and quick assembly.

Background technique

The traditional light bulb is an incandescent light bulb, which has low illumination, is not bright, and does not save energy. Fluorescent light bulbs appear after incandescent light bulbs, which are energy efficient and brighter, but are not environmentally friendly due to the large use of phosphors. At present, there are more energy-saving and environmentally-friendly LED light sources, and LED bulbs are produced. The existing LED bulbs are generally complicated in structure, including three parts - the lamp cap, the neck, the circuit board and the illuminating sphere, and the lamp caps are standard parts. The neck is generally made of plastic and metal. The neck is generally opaque. It is mainly used for connecting and dissipating heat or placing a driver. The circuit board is usually fixed on the neck. The illuminating sphere is generally made of plastic and glass. It is used for light transmission, and it is generally required to add additional heat sinks. The heat sink is generally visible from the outside and has a strange shape, so its shape and internal structure are quite different from those of ordinary incandescent light bulbs. Moreover, most of the light-emitting elements currently used in LED bulbs use high-power LED lamps.

The above-mentioned existing LED light bulb structure can provide the user with the effect of emitting bright light, and is indeed progressive, but in actual use, it is found that there are still many deficiencies in its own structure and performance, resulting in existing In practical applications, LED bulbs fail to achieve the best results and work efficiency. The shortcomings are summarized as follows:

1. The neck of the LED bulb in the prior art does not protect the circuit board well, which makes the conduction of the LED bulb unstable, lacks reliability, and even causes short circuit, leakage, etc., and there is a large Security risks.

2. Most of the circuit boards in the prior art are electrically connected to the lamp panel by means of soldering. This type of connection is not convenient for assembly, maintenance and replacement of components, and is not conducive to improving production efficiency and economic efficiency, so it is not conducive to the market. Promotion.

Summary of the invention

In view of this, the present invention is directed to the absence of the prior art, and its main object is to provide an LED lighting bulb which has the characteristics of stable conduction, safety and reliability.

Another object of the present invention is to provide an LED lighting bulb that is characterized by ease of assembly, maintenance, and replacement of components.

In order to achieve the above object, the present invention adopts the following technical solutions:

An LED lighting bulb comprising a lamp cap, an insulator, a circuit board, a heat sink, an LED lamp panel and a lamp cover, the insulator comprising an insulating bottom case and an insulating sleeve, the circuit board being fixed in the insulating sleeve, the insulating The sleeve is fixed in the heat sink, and the lamp head is fixed on the lower end of the insulator. The LED lamp panel is fixed on the upper end surface of the heat sink, and the lamp cover covers the LED lamp panel.

As a preferred solution, the heat sink includes a heat sink and a heat conducting plate, and the heat sink has a cavity for accommodating the insulating sleeve, and the heat conducting plate is fixed to the upper end surface of the heat sink.

As a preferred solution, the lower end of the cavity has an opening for facilitating the insertion of the insulating sleeve from bottom to top.

As a preferred solution, the insulating sleeve and the heat dissipating body are mutually cooperatively positioned by the positioning groove and the positioning post, and the positioning groove is concavely formed on the outer wall surface of the insulating sleeve, and the positioning post is disposed on the air dissipating body. The inner wall surface of the cavity extends longitudinally on the outer wall surface of the insulating sleeve, and the positioning post extends longitudinally on the inner wall surface of the cavity.

As a preferred solution, the inner wall surface of the insulating sleeve is provided with two opposite fixing slots, and the two sides of the circuit board are inserted into the fixing slots.

As a preferred solution, the insulating bottom case has a first hook portion extending corresponding to the heat sink seat, and the first hook portion and the first button portion are fastened to each other.

As a preferred solution, the upper end of the insulating bottom case is provided with a second hook portion, and a second fastening portion is disposed corresponding to the lower end of the insulating sleeve, and the second hook portion is fixedly coupled to the second portion.

As a preferred solution, the circuit board is provided with a plug, and the plug passes through the upper end surface of the heat sink and is inserted into the LED lamp panel.

As a preferred solution, the LED lamp panel is provided with three through holes, the three through holes are non-uniformly distributed on the same circumference, and one end of the screw passes through the through hole of the LED lamp panel and is fixed to the heat sink. .

As a preferred solution, the lampshade and the heat sink are snap-fitted.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions:

1. By fixing an insulating sleeve in the heat sink, the insulating sleeve is used to protect the circuit board, and the functions of dustproof and waterproof are prevented, thereby effectively preventing the occurrence of short circuit and leakage, and ensuring the circuit board. Turning on, so that the conduction of the LED lighting bulb can be stabilized, greatly improving its safety and reliability.

Second, the circuit board and the lamp panel are electrically connected by using a plug connection, instead of the conventional soldering method; and the lamp disc is fixed to the heat sink by screws, and the three screws on the lamp disc pass through The holes are non-uniformly distributed on the same circumference, so that the lamp panel has a foolproof function, and the plug of the circuit board can be easily connected to the lamp panel for electrical connection. Therefore, the assembly, maintenance and replacement of the components of the present invention are simpler, which is advantageous for improving production efficiency and economic efficiency, and has a broader market prospect.

In order to explain the structural features and functions of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

DRAWINGS

Figure 1 is an assembled perspective view of an embodiment of the present invention;

Figure 2 is an exploded perspective view of an embodiment of the present invention;

Figure 3 is a longitudinal cross-sectional view of an embodiment of the present invention;

Figure 4 is a transverse cross-sectional view of an embodiment of the present invention.

Description of the figure:

10, heat sink 11, heat sink

111, cavity 112, positioning column

113, heat sink 114, screw hole

115, the first buckle portion 12, the heat conduction plate

121, through hole 122, through hole

123, the third buckle 20, the insulator

21, insulating sleeve 211, positioning groove

212, fixing groove 213, second buckle

214, groove 22, insulating bottom case

221, the first hook portion 222, the second hook portion

30, LED lamp panel 31, heat dissipation substrate

311, through hole 32, LED lamp body

33, the insertion hole 40, the lampshade

41, the third hook 50, the circuit board

51, plug 60, lamp holder

detailed description:

Referring to FIGS. 1 through 4, there is shown a specific structure of a preferred embodiment of the present invention, including a heat sink 10, an insulator 20, an LED lamp panel 30, a lamp cover 40, a circuit board 50, and a lamp cap 60.

The heat sink 10 is made of an aluminum material having a better heat dissipation effect, and includes a heat sink 11 and a heat conductive plate 12 . The heat dissipating body 11 has a cavity 111 which is vertically penetrated. The inner wall surface of the cavity 111 is provided with a positioning post 112 extending longitudinally on the inner wall surface of the cavity 111, and the outer wall surface of the cavity 111 is circumferentially extended. A plurality of fins 113 are radiated outwardly from the circle, and the width of the fins 113 is amplified from the lower end of the heat sink 11 to the upper end of the heat sink 11 so that the heat sink 11 has a funnel shape, so that the heat sink 11 has good heat dissipation. effect. The upper end surface of the heat dissipating body 11 is provided with three screw holes 114, which are located on the same circumference and are non-uniformly distributed. The lower end of the heat dissipating body 11 is provided with a first fastening portion 115, and the first fastening portion 115 is in the form of a buttonhole. The heat conducting plate 12 is provided with three through holes 121 corresponding to the three screw holes 114 of the upper end surface of the heat dissipating body 11. The heat conducting plate 12 is fixed on the heat dissipating body 11 by screws to form a heat sink 10, and the heat conducting plate 12 is simultaneously provided with a through hole. The hole 122 and the third buckle portion 123.

The insulator 20 includes an insulating sleeve 21 and an insulating bottom case 22. The insulating sleeve 21 is inserted into the cavity 111 of the heat sink 10 from the bottom, and the outer wall surface of the insulating sleeve 21 is concavely formed with a positioning groove 211. The positioning groove 211 is outside the insulating sleeve 21. The wall extends longitudinally, and the positioning groove 211 is inserted into the positioning post 112 of the heat dissipating body 11 to position the insulating sleeve 21 in the cavity 111 of the heat dissipating body 11 to be non-rotatable. Two fixing grooves 212 are disposed on the inner wall surface of the insulating sleeve 21. The openings of the two fixing grooves 212 are opposite, and the lower end of the fixing groove 212 is open, and the upper end surface of the fixing groove 212 is closed. A first hook portion 221 extends from the upper end of the insulating bottom case 22, and the first hook portion 221 and the first fastening portion 115 of the heat sink 11 are coupled to each other to fix the insulator 20 to the lower end of the heat sink 10. The insulating bottom case 22 and the insulating sleeve 21 may be integrally connected, or may be fixed by fastening in the embodiment. As shown in FIG. 2, a second hook portion 222 is disposed at an upper end of the insulating bottom case 22, corresponding to A second fastening portion 213 is disposed on the insulating sleeve 21 , and the second fastening portion 222 and the second fastening portion 213 are coupled to each other to fix the insulating sleeve 21 to the insulating bottom case 22 . And a recess 214 is disposed on the lower end wall surface of the insulating sleeve 21, and the first hook portion 221 of the insulating bottom shell 22 is embedded in the recess 214. The positioning of the insulating sleeve 21 is enhanced.

The LED lamp panel 30 includes a heat dissipation substrate 31 and a plurality of low power LED lamp bodies 32 mounted on the heat dissipation substrate 31. The heat dissipation substrate 31 has a circular shape, and the heat dissipation substrate 31 is also made of an aluminum material having a good heat dissipation effect, thereby enhancing the heat dissipation effect of the LED lamp body 32. The heat dissipation substrate 31 is provided with three through holes 311 corresponding to the through holes 121 of the heat conducting plate 12, and one end of the screw sequentially passes through the through holes 311, the through holes 121 and the screw holes of the heat sink 11. 114 is screwed so that the LED lamp panel 30 is fixed to the upper end surface of the heat sink 10. The plurality of LED lamp bodies 32 are the main light-emitting elements of the present invention. The low-power LED lamp body 32 has the characteristics of high luminous efficiency, and the plurality of LED lamp bodies 32 are evenly distributed on the upper surface of the circular heat-dissipating substrate 31. Further, the LED lamp panel 30 is provided with a plug hole 33 corresponding to the through hole 122 in the heat conducting plate 12.

The lamp cover 40 is a transparent hemispherical casing, and the lamp cover 40 is matched with the upper end surface of the heat sink 10. The third cover portion 41 is disposed on the lamp cover 40. The third hook portion 41 and the third buckle portion 123 are mutually connected. The lamp cover 40 is fixed on the heat sink 10, and the lamp cover 40 covers the lamp panel 30, which has a good protection effect on the LED lamp panel 30. The LED lamp body 32 generates light, and the light passes through the lamp cover 40. And shoot and spread.

The two sides of the circuit board 50 are inserted into the two fixing slots 212 of the insulating sleeve 21 from bottom to top and are fixedly mounted in the insulating sleeve 21. The insulating sleeve 21 is dustproof and waterproof to the circuit board 50. Various safety protection functions make the circuit board 50 operate safely and stably, thereby ensuring the reliability of the light bulb illumination. The circuit board 50 is provided with a plug 51. The plug 51 is a columnar conductor. The plug 51 passes through the through hole 122 of the heat conducting plate 12 and is inserted into the insertion hole 33 of the lamp board 30, thereby realizing the circuit. The electrical connection of the panel 50 to the panel 30 allows for avoidance of soldering, making assembly, maintenance and replacement of the components simple. Since the three through holes 311 of the lamp tray 30 correspond to the three screw holes 114 on the heat dissipating body 11, the three through holes 311 are also non-uniformly distributed on the same circumference, and the lamp tray 30 is fixed by the lock screw. When the heat sink 10 is disposed on the heat sink 10, the lamp panel 30 is provided with a foolproof function, and the plug 51 of the circuit board 50 can be easily inserted into the insertion hole 33 of the lamp panel 30 to improve the assembly efficiency of the components.

The base 60 is fixed to the lower end of the heat sink 10. The upper end of the base 60 is electrically connected to the circuit board 50, and the lower end of the base 60 is electrically connected to an external power source.

The assembly process and the usage method of this embodiment are as follows:

The assembly of the present invention is very simple. As shown in Fig. 2, first, the heat conducting plate 12 is placed on the upper end surface of the heat sink 11, and the LED lamp panel 30 is placed on the upper surface of the heat conducting plate 12, and then passed through the screws from top to bottom. The through hole 311 of the LED lamp panel 30 and the through hole 121 of the heat conducting plate 12 are screwed into the screw hole 114 of the heat sink 11, and the LED lamp panel 30 is fixed on the upper end surface of the heat sink 10, and then the lamp cover 40 is The three hook portions 41 and the third fastening portion 123 of the heat sink 10 are buckled and fixed to each other to cover the LED lamp panel 30, and the lamp cover 40 can be pressed downwards to facilitate the fastening. In this way, the first component is formed in combination.

Then, the two sides of the circuit board 50 are inserted into the two fixing slots 212 of the inner wall surface of the insulating sleeve 21 from bottom to top, so that the circuit board 50 is fixed in the insulating sleeve 21, and then the insulating bottom case 22 is The second hook portion 222 and the second fastening portion 213 of the insulating sleeve 21 are fastened to each other. The insulating sleeve 21 is fixed on the insulating bottom case 22 to form the insulator 20, and then the base 60 is fixed to the lower end of the insulator 20. In this combination, a second component is formed.

Finally, the second component is inserted from the bottom to the top of the first component, and the insulating sleeve 21 of the insulator 20 is inserted into the cavity 111 of the heat sink 10 from bottom to top, and the cavity 111 is positioned during insertion. The post 112 is correspondingly inserted into the positioning slot 211 of the insulating sleeve 21, and when the insulating sleeve 21 is inserted into position, the plug 51 of the circuit board 50 is inserted into the insertion hole 33 of the LED lamp panel 30 for electrical connection, and the insulating bottom case The first hook portion 221 of the 22 and the first fastening portion 115 of the heat sink 10 are fastened and fixed to each other, replacing the traditional screw fixing manner, which is convenient for installation, maintenance and replacement. Thereby the second component is fixed to the first component. Thereby, the LED lighting bulb of the present invention is assembled, as shown in Fig. 1, which is a perspective view of the assembled invention.

The method of use of the present invention is also very simple. The lamp holder 60 is simply mounted on an external plug and then powered on. The power source turns on the LED lamp panel 30 through the circuit board 50. The LED lamp body 32 emits light, and the light is transmitted through the lampshade 40. At the same time, the heat generated by the LED lamp body 32 is sequentially transmitted to the heat sink 11 through the heat dissipation substrate 31 and the heat conduction plate 12 for heat dissipation, and the heat can be uniformly dispersed in time to extend the service life of the LED lamp body 32, and at the same time, due to insulation. The sleeve 21 has a good protection function for the circuit board 50, effectively preventing the occurrence of short circuit, leakage, etc., ensuring the conduction of the circuit board 50, making the LED bulb safe and reliable, and stable in illumination.

The design of the invention focuses on: firstly, an insulating sleeve is fixed in the heat sink, and the circuit board is protected by the insulating sleeve, and functions such as dustproof and waterproof is effectively prevented, thereby preventing short circuit and leakage. Appears to ensure the continuity of the circuit board, so that the conduction of the LED lighting bulb can be stabilized, greatly improving its safety and reliability. Secondly, the circuit board and the lamp panel are electrically connected by using a plug connection, and the lamp disc is fixed to the heat sink by screws, and the three through holes on the lamp disc through which the screws pass are on the same circumference. The non-uniform distribution makes the lamp panel have a foolproof function, and the plug of the circuit board can be easily connected to the lamp panel for electrical connection, which makes the assembly, maintenance and replacement of the components of the invention simple, and is advantageous for improving production. Efficiency and economic benefits have broad market prospects.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still It is within the scope of the technical solution of the present invention.

Claims (10)

What is claimed is: 1. An LED lighting bulb comprising a lamp cap, an insulator, a circuit board, a heat sink, an LED lamp panel and a lampshade, wherein the insulator comprises an insulating bottom case and an insulating sleeve, the circuit board being fixed in the insulation In the sleeve, the insulating sleeve is fixed in the heat sink, and the lamp cap is fixed on the lower end of the insulator. The LED lamp disc is fixed on the upper end surface of the heat sink, and the lamp cover covers the LED lamp panel.

2 . The LED lighting bulb of claim 1 , wherein the heat sink comprises a heat sink and a heat conducting plate, wherein the heat sink has a cavity for accommodating the insulating sleeve, and the heat conducting plate is fixed to the heat sink. The upper end of the body.

3. The LED lighting bulb of claim 2, wherein the lower end of the cavity has an opening for facilitating the insertion of the insulating sleeve from bottom to top.

The LED lighting bulb according to claim 2, wherein the insulating sleeve and the heat dissipating body are cooperatively positioned by the positioning groove and the positioning post, and the positioning groove is concave on the outer wall surface of the insulating sleeve. Forming, the positioning post is disposed on an inner wall surface of the cavity of the heat dissipating body, and the positioning groove extends longitudinally on an outer wall surface of the insulating sleeve, and the positioning post extends longitudinally on the inner wall surface of the cavity.

The LED lighting bulb according to claim 1, wherein the inner wall surface of the insulating sleeve is provided with two fixed fixing slots, and the two sides of the circuit board are inserted into the fixing slots.

The LED lighting bulb of claim 1 , wherein the insulating bottom case has a first hook portion, and the first hook portion is disposed on the heat sink seat, the first hook portion and the first hook portion. The buckles and the parts are fastened to each other.

The LED lighting bulb according to claim 1, wherein the upper end of the insulating bottom case is provided with a second hook portion, and the second end portion corresponding to the lower end of the insulating sleeve is provided, the second hook portion And the second interlocking and fixing.

The LED lighting bulb according to claim 1, wherein the circuit board is provided with a plug, and the plug passes through the upper end surface of the heat sink to be inserted into the LED lamp panel.

The LED lighting bulb according to claim 1, wherein the LED lamp panel is provided with three through holes, the three through holes are non-uniformly distributed on the same circumference, and one end of the screw passes through the LED. The through hole of the lamp panel is fixed to the heat sink.

The LED lighting bulb of claim 1 , wherein the lamp cover and the heat sink are snap-fitted.

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