CN204201516U - Light Emitting Diode Bulbs - Google Patents

Abstract

A light emitting diode lamp includes: the electric connector can be matched with a power end and at least comprises two power lines which are electrically connected with a power supply of the power end; a heat sink at least comprising a heat conducting plate; a lamp core plate, which comprises a printed circuit board and a light emitting diode, wherein the printed circuit board is contacted with the heat conducting plate of the radiator, and can radiate heat through the heat conducting plate; the driving circuit board comprises a driving circuit which is attached to the other side surface of the heat conducting plate relative to the printed circuit board and is electrically connected with the printed circuit board of the lamp core plate; in one embodiment, the driving circuit of the driving circuit board is directly electrically connected to the printed circuit board of the lamp core board through the electronic element without additionally using an electric wire to electrically connect the driving circuit and the printed circuit board, so that the assembly steps are simplified and the heat dissipation effect of the driving circuit board is improved.

Description

Light Emitting Diode Bulbs

technical field

The present invention relates to a light-emitting diode lighting device, in particular to a light-emitting diode light bulb which simplifies production and assembly steps and improves the heat dissipation effect of a driving circuit board.

Background technique

Light-emitting diode lighting device refers to the technology of using light-emitting diode (LED) as light source. The successful development has been completed. Based on the ideal of green energy and environmental protection, manufacturers have begun to introduce light bulbs (LED lamps) using light-emitting diodes. Since the luminosity of a single light-emitting diode is much lower than that of traditional light bulbs and energy-saving bulbs, an light-emitting diode light bulb usually contains multiple light-emitting diodes.

Since light-emitting diodes are driven by direct current (DC), unlike existing traditional light bulbs driven by alternating current, a conversion circuit is usually provided in light-emitting diode light bulbs to convert alternating current (AC) into direct current for direct drive LEDs. In addition, since high temperature will damage the light-emitting diodes, it is necessary to provide heat sinks on the light-emitting diode bulbs to avoid damage to the light-emitting diodes due to low temperature resistance. On the other hand, in order to be compatible with existing lamps using traditional light bulbs, it is necessary to redesign the structure of light-emitting diode bulbs, so that light-emitting diodes can be made and used after adding conversion circuits and related stabilizing devices. Luminaires with conventional bulbs are compatible with light-emitting diode bulbs, which in turn can be directly installed in luminaires using conventional bulbs.

Known light-emitting diode light bulb is for example: the China Taiwan invention patent I384170 of approved announcement, wherein proposes a kind of light-emitting diode (LED) light bulb structure that can replace wick, comprises: a heat dissipation casing, a metal lamp cap , a driving circuit board, a lamp chip, a spacer and a lampshade. One end of the heat dissipation shell has an opening, and the other end has a set of interfaces. The metal lamp cap is configured on the assembly interface of the heat dissipation housing. The driving circuit board is arranged inside the heat dissipation housing and electrically connected with the metal lamp cap. The lamp chip and the spacer are arranged in the opening, so that the lamp chip is electrically connected with the driving circuit board. In addition, the patent M455988 that has been approved and announced proposes a modular light-emitting diode bulb lamp, including: a lampshade, a lamp board printed with a circuit and electrically connected to a plurality of light-emitting diode packages, and a lamp Cup, a lamp holder, and a drive module printed with a circuit and electrically connected to multiple electronic parts; wherein, the lamp board has a connector socket; the lamp cup has an upper open end, a lower open end and a screw joint; the lamp holder It is composed of a combination body, an insulator, and a contact body; the drive module is composed of a connector male seat and a set of ground wires and live wires; the upper open end of the lamp cup is covered by the lamp board, and the connector female seat is plugged and combined with the connector male seat , the ground wire is in contact with the contact body of the lamp holder, the live wire is in contact with the combination of the lamp holder, and the combination of the lamp holder is screwed with the screw part of the lamp cup.

The drive circuit board in the known light-emitting diode light bulb is mainly electrically connected together with the circuit board provided with the light-emitting diode through wires, and on the other hand is electrically connected with the lamp cap through another wire, so In the process of production and assembly, several welding processes are required, and the production process is relatively complicated. The aforementioned M455998 patent uses a pair of connector male seat and connector female seat that can be plugged into each other to electrically connect the light board and the driver module, which is still not effective. The process steps of welding are reduced, and additional male connectors and female connectors are used to increase the number of parts.

On the other hand, in the aforementioned two known light-emitting diode bulbs, the driving circuit board and the driving module are both placed in the hollow interior of the heat dissipation casing, and the heat dissipation casing cannot be used for heat dissipation, and long-term use will also affect the driving. The service life of the circuit board or driver module.

new content

The purpose of the present invention is to provide a light-emitting diode bulb which can simplify the production and assembly steps.

A kind of embodiment of the light-emitting diode bulb that the present invention proposes, comprises:

An electrical connector, which can be matched with a power terminal, and the electrical connector has at least two power lines electrically connected to the power source of the power terminal;

A heat sink at least includes a heat conducting plate, and an electrical connector is fixed at one end of the heat sink;

A wick board, including a printed circuit board and a light-emitting diode (LED), the light-emitting diode is arranged on one side surface of the printed circuit board with the printed circuit, the other side surface of the printed circuit board and the heat conducting plate of the radiator contact, heat dissipation can be achieved through the heat-conducting plate; and

A drive circuit board includes a drive circuit, the drive circuit is attached to the other side of the heat conduction plate relative to the printed circuit board, and the drive circuit is electrically connected to the printed circuit board of the wick board.

In an embodiment of the present invention, the heat sink includes a plurality of heat dissipation fins, and these heat dissipation fins have a joint edge and a fixed rib, and these heat dissipation fins are arranged side by side and connected to each other by the joint edge to form an inner The hollow structure of the cavity, the heat conduction plate is arranged at one end of the inner cavity and fixedly connected with the heat dissipation fins, thereby forming a heat sink with a plurality of heat dissipation fins, an inner cavity and a heat conduction plate .

In an embodiment of the present invention, the radiator includes a heat dissipation shell, a plurality of heat dissipation fins and the heat conduction plate, the heat dissipation shell is a tubular element, the heat dissipation shell has a hollow inner cavity and an opening, The electrical connector is fixed at the opening of the heat dissipation shell, and the heat dissipation shell, the heat dissipation fins and the heat conduction plate are fixedly connected to each other to form the radiator capable of heat transfer.

In an embodiment of the new LED light bulb, the wick board and the driving circuit board share the heat conduction plate of the heat sink, which can solve the problem that the traditional driving circuit board cannot dissipate heat through the heat sink.

In an embodiment of the new light-emitting diode light bulb, the driving circuit of the driving circuit board is directly electrically connected to the printed circuit board of the wick board through electronic components, and there is no need to use additional wires to electrically connect the driving circuit and the printed circuit board. It has the effect of simplifying the steps of production assembly.

Details about other functions and embodiments of the present invention are described as follows with reference to the accompanying drawings.

Description of drawings

Fig. 1 is an exploded view of the structure of an embodiment of the present invention.

Fig. 2 is an exploded view of another embodiment of the present invention.

FIG. 3 is an appearance structure diagram of the embodiment in FIG. 2 .

Fig. 4 is a cross-sectional structure diagram at IV-IV position of Fig. 3 .

Fig. 5 is a cross-sectional structure diagram of another embodiment of the present invention.

FIG. 6 is an equivalent circuit block diagram of the driving circuit of the new driving circuit board.

Symbol Description

10 electrical connectors

101 power cord

102 power cord

20 Radiator

21 heat sink

210 lumen

211 opening

212 side wall

22 cooling fins

23 heat conduction plate

24 cooling fins

241 Connecting edge

242 fixed rib

243 lumen

244 perforations

30 wick board

31 printed circuit board

311 Fixed bolt

32 LEDs

40 drive circuit board

41 drive circuit

42 capacitors

421 first conductive element

422 second conductive element

43 rectifier

44 LED driver

50 shades

C2 filter capacitor

LED+ Positive output for DC drive current

LED- Negative output terminal of DC drive current

S1a Welding point

S1b Welding point

S2a Welding point

S2b Welding point

Detailed ways

First please refer to Fig. 1, which is an exploded view of the structure of an embodiment of the new light-emitting diode bulb, in which the structure of an embodiment of the new light-emitting diode bulb is shown, including:

An electrical connector 10, which can be matched with a power supply terminal to form an electrical connection, and the electrical connector 10 has at least two power supply lines 101 and 102 electrically connected to the power supply (usually an AC power supply) of the power supply terminal;

A heat sink 20 at least includes a heat conducting plate 23, and the electrical connector 10 is fixed at one end of the heat sink 20;

A wick board 30 includes a printed circuit board 31 and a light-emitting diode 32 (LED). In an embodiment of the present invention, a plurality of light-emitting diodes 32 are included. One side surface with a printed circuit, wherein the printed circuit includes a positive circuit for electrically connecting with the positive pole of the light emitting diode 32, and a negative circuit for electrically connecting with the negative pole of the light emitting diode 32, the printed circuit The other side surface of the plate 31 is in contact with the heat conduction plate 23 of the radiator 20 (see FIG. 4 ), so that the wick plate 30 can dissipate heat through the heat conduction plate 23; and

A driving circuit board 40 includes a driving circuit 41 . The driving circuit 41 is mounted on the other side of the heat conducting plate 23 relative to the printed circuit board 31 . The driving circuit 41 is electrically connected to the printed circuit board 31 of the wick board 30 .

An embodiment of the electrical connector 10 includes any one of a screw-type lamp cap, a connector-type lamp cap and a plug-in lamp cap, wherein the electrical connector 10 shown in FIG. is the beginning (such as E22), but the electric connector 10 included in the present model is not limited to this type. The electric connector 10 can also be a plug-in lamp cap, that is, the current model starts with the English letter G (such as GU10 ), and connector-type lamp caps, that is, any one of the current model numbers beginning with the English letter B (such as B22).

In an embodiment of the present invention, as shown in FIG. 1 , an embodiment of the heat sink 20 includes a plurality of heat dissipation fins 24, and these heat dissipation fins 24 have an engaging edge 241 and a fixing rib 242, and these The heat dissipation fins 24 are arranged side by side with each other through the connecting edge 241 to form a hollow structure with an inner cavity 243. The heat conducting plate 23 is located at one end of the inner cavity 243 and is fixedly connected with the heat dissipation fins 24. It can be used Tightly fit or fixedly connected together by spot welding, the fixed rib 242 is located at one end of the long axis of the heat dissipation fin 24, one of the implementations is to make the heat dissipation fin 24 with a metal sheet, and the heat dissipation fin 242 One end of the long axis of the fin 24 is bent to form the fixing rib 242. The fixing rib 242 of the cooling fin 24 has a plurality of perforations 244. One side surface of the printed circuit board 31 has a plurality of fixing pins 311 that can be connected with these perforations. 244 are connected and fixed, thereby forming a heat sink 20 with an inner cavity 243 and a heat conducting plate 23 .

Please refer to Fig. 2-Fig. 4, it is another embodiment structure of the present invention, another embodiment of the heat sink 20 wherein comprises: a heat dissipation shell 21, a plurality of heat dissipation fins 22 and the heat conduction plate 23, heat dissipation The shell 21 is a tubular element. The heat dissipation shell 21 has a hollow inner cavity 210 and an opening 211. The electrical connector 10 is fixed on the opening 211 of the heat dissipation shell 21. The heat dissipation shell 21, the heat dissipation fins 22 and the heat conduction plate 23 are connected to each other. They are fixedly connected together to form a heat sink 20 capable of heat transfer.

One embodiment of the heat sink 20 is a cylindrical structure. The heat sink 20 can be made of extruded aluminum. The heat dissipation shell 21 is a tubular element. The heat dissipation shell 21 has a side wall 212 and a plurality of heat dissipation fins. 22 surrounds and fixes (can use the mode of embedding) on the outside of the heat dissipation shell 21, and the heat conducting plate 23 is made of a material with better thermal conductivity, such as a metal plate (which can be an aluminum plate or a copper sheet), and the heat conducting plate 23 is arranged on One of the ends of the heat sink 21, thereby making the radiator 20 constitute a structure with an inner cavity 210 and an opening 211 (see FIG. 4); wherein a transparent lampshade 50 can also be installed at the bottom of the radiator 20 It is used to protect the light emitting diode 32 .

In an embodiment of the present invention, the drive circuit board 40 includes two conductive elements, the two conductive elements are electronic elements included in the drive circuit 41, and the two conductive elements are respectively a first conductive element 421 and a second conductive element 422 , wherein the first conductive element 421 is electrically connected to the driving circuit 41 of the driving circuit board 40 and the positive circuit of the printed circuit board 31, and the second conductive element 422 is electrically connected to the driving circuit 41 of the driving circuit board 40 and the negative electrode of the printed circuit board 31 circuit, so that the driving circuit 41 of the driving circuit board 40 and the printed circuit board 31 of the wick board 30 can be electrically connected directly through the first conductive element 421 and the second conductive element 422, without using additional wires to electrically connect the driving circuit board The drive circuit 41 of 40 and the printed circuit board 31 of the wick board 30 can simplify the assembly process of production and have the effect of convenient assembly.

An embodiment of the aforementioned first conductive element 421 and second conductive element 422 is any one of metal pins (see FIG. 1 ), terminals and two pins of the capacitor 42 (see FIG. 2 ). It is worth mentioning that, in an embodiment of the present invention, the capacitor 42 is an electronic component contained in the driving circuit 41 of the driving circuit board 40, and the first pin of the capacitor 42 (as the aforementioned first conductive element 421) and the second pin (as the aforementioned second conductive element 422) are electrically connected across the driving circuit 41 of the driving circuit board 40 and the printed circuit board 31 of the wick board 30, so that the driving circuit 41 of the driving circuit board 40 The printed circuit board 31 of the wick board 30 can be electrically connected directly through the capacitor 42, and there is no need to use additional wires to electrically connect the drive circuit 41 of the drive circuit board 40 and the printed circuit board 31 of the wick board 30, which can simplify production. The assembly process has the effect of convenient assembly.

Please refer to FIG. 6, which is an equivalent circuit block diagram of an embodiment of the driving circuit 41 having the aforementioned capacitor 42, wherein the driving circuit 41 shown includes: a rectifier 43 (such as a bridge rectifier), a light emitting diode driver 44 and a filter capacitor C2, wherein the light-emitting diode driver 44 usually adopts a light-emitting diode driver IC specially designed for light-emitting diode lighting, and the two power lines 101 and 102 of the electrical connector 10 are respectively connected to the rectifier 43 of the drive circuit 41 The input side is electrically connected, the alternating current is rectified and then output by the output side of the rectifier 43 as direct current for driving the light emitting diode 32, and the direct current is modulated and converted by the light emitting diode driver 44 to provide a stable direct current driving current , the positive output terminal LED+ and the negative output terminal LED- of the DC driving current are electrically connected to the positive and negative pins of the light-emitting diode 32 respectively, wherein the positive output terminals LED+ and the positive output terminal LED+ for driving the light-emitting diode 32 A filter capacitor C2 is connected across the negative output terminal LED- to provide a filter function, and this filter capacitor C2 is the capacitor 42 disclosed in the structure of the previous embodiment, so the first pin of the capacitor 42 is used in the present invention (As the aforementioned first conductive element 421) electrically connected to the positive output terminal LED+ of the direct current of the drive circuit board 40 and the positive circuit of the printed circuit board 31 (the positive circuit is electrically connected to the positive pole of the light emitting diode 32), The second pin of the capacitor 42 (as the aforementioned second conductive element 422) is electrically connected to the negative output terminal LED- of the direct current of the drive circuit board 40 and the negative circuit of the printed circuit board 31 (the negative circuit is connected to the light-emitting diode The negative pole of the body 32 is electrically connected). Through the structure of the above embodiment, in the process of production and assembly, it is only necessary to pass the first pin of the capacitor 42 through the welding point S1a of the positive output terminal LED+ of the direct current of the drive circuit 41 (see FIG. The end of the pin is soldered to the soldering point S2a of the positive circuit of the printed circuit board 31, and the second pin of the capacitor 42 is passed through the soldering point S1b (see FIG. 4 ) of the negative output terminal LED- of the direct current of the driving circuit 41 in addition, and then The end of the second pin is welded to the welding point S2b of the negative circuit of the printed circuit board 31, and the assembly can be completed. Compared with the known light-emitting diode bulbs connected by wires, the new model obviously has simplified production and assembly steps. effect.

In an embodiment of the new light-emitting diode bulb, the wick board 30 and the driving circuit board 40 share the heat conduction plate 23 of the radiator 20, specifically, the driving circuit board 40 is arranged in the inner cavity of the heat dissipation shell 21 210, and make one side surface of the drive circuit board 40 contact with the heat conduction plate 23 of the heat sink 20 (see Fig. 5), so that the drive circuit board 40 can dissipate heat through the heat conduction plate 23, and then solve the problem that the traditional drive circuit board does not pass through the heat sink. The problem of heat dissipation.

Although the present invention has been disclosed as above through the above-mentioned embodiments, it is not intended to limit the present invention. Anyone familiar with similar skills can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of patent protection for new models is subject to the content defined in the claims.

Claims (15)

1. a light emitting bipolar body lampbulb, is characterized in that, comprising:

One electric connection, can mate with a power end, this electric connection at least has the power supply that two power lines are electrically connected this power end;

One radiator, at least comprises a heat-conducting plate, and this electric connection is fixedly arranged on one end of this radiator;

One wick plate, comprise a printed circuit board (PCB) and a light-emittingdiode, this light-emittingdiode is laid in the side surface that this printed circuit board (PCB) has a printed circuit, this printed circuit comprises the cathode circuit in order to be electrically connected with the positive pole of this light-emittingdiode, with the cathode traces in order to be electrically connected with the negative pole of this light-emittingdiode, the opposite side surface of this printed circuit board (PCB) contacts with this heat-conducting plate of this radiator; And

One drive circuit plate, comprises one drive circuit, and this drive circuit is attached at the another side of this heat-conducting plate relative to this printed circuit board (PCB), and this drive circuit is electrically connected at this printed circuit board (PCB) of this wick plate.

2. light emitting bipolar body lampbulb as claimed in claim 1, it is characterized in that, this electric connection comprises spiral lamp holder, joint type lamp holder and plug-in type lamp holder wherein any one.

3. light emitting bipolar body lampbulb as claimed in claim 1, it is characterized in that, this radiator comprises multiple radiating fin, one side surface of this printed circuit board (PCB) of this wick plate has a gim peg, those radiating fins have a linking limit and a fixing rib, those radiating fins overlap around forming the hollow structure with an inner chamber by this linking limit mutually side by side, the major axis that this fixing rib is positioned at this radiating fin to one end, this fixing rib of this radiating fin has multiple perforation and can be connected and fixed with this gim peg of this wick plate.

4. light emitting bipolar body lampbulb as claimed in claim 1, it is characterized in that, this radiator comprises: a radiation shell, multiple radiating fin and this heat-conducting plate, this radiation shell has an inner chamber and an opening of hollow, this electric connection is fixedly arranged on this opening of this radiation shell, and this heat-conducting plate is arranged at wherein one end of this radiation shell.

5. light emitting bipolar body lampbulb as claimed in claim 4, it is characterized in that, this radiation shell is a kind of element of tubulose, and this radiation shell has a sidewall, this radiating fin multiple around and be fixedly arranged on the outside of this radiation shell, this heat-conducting plate is a metallic plate.

6. light emitting bipolar body lampbulb as claimed in claim 1, it is characterized in that, this drive circuit comprises: a rectifier, a light-emittingdiode driver and a filter condenser, this two power line of this electric connection is electrically connected with an input side of this rectifier respectively, one outlet side of this rectifier comprises this cathode circuit and this cathode traces that a cathode output end and a cathode output end are electrically connected at this printed circuit respectively, and wherein one first pin of this capacitor and one second pin are connected across this cathode output end and this cathode output end of this outlet side respectively.

7. light emitting bipolar body lampbulb as claimed in claim 4, it is characterized in that, this drive circuit board is arranged at this inner chamber of this radiation shell, and makes a side surface of this drive circuit board contact with this heat-conducting plate of this radiator.

8. light emitting bipolar body lampbulb as claimed in claim 1, it is characterized in that, a side surface of this drive circuit board contacts with this heat-conducting plate of this radiator.

9. light emitting bipolar body lampbulb as claimed in claim 1, it is characterized in that, this drive circuit board comprises one first conducting element and one second conducting element, this first conducting element and the electronic component of this second conducting element for comprising in this drive circuit, this first conducting element and this second conducting element can be metal stitch and terminal wherein any one.

10. a light emitting bipolar body lampbulb, is characterized in that, comprising:

One electric connection, in order to be electrically connected the power end of coupling, this electric connection at least has two power lines and is electrically connected power supply;

One radiator, comprise a radiation shell and a heat-conducting plate, this radiation shell has an inner chamber and an opening of hollow, this electric connection is fixedly arranged on this opening of this radiation shell, this heat-conducting plate is arranged at wherein one end of this radiation shell, and this radiation shell and this heat-conducting plate are connected to each other this radiator forming and can carry out heat and pass;

One wick plate, comprise a printed circuit board (PCB) and a light-emittingdiode, this light-emittingdiode is laid in the side surface that this printed circuit board (PCB) has a printed circuit, this printed circuit comprises the cathode circuit in order to be electrically connected with the positive pole of this light-emittingdiode, with the cathode traces in order to be electrically connected with the negative pole of this light-emittingdiode, the opposite side surface of this printed circuit board (PCB) contacts with this heat-conducting plate of this radiator; And

One drive circuit plate, comprises one drive circuit, and this drive circuit is attached at the another side of this heat-conducting plate relative to this printed circuit board (PCB), and this drive circuit is electrically connected at this printed circuit board (PCB) of this wick plate.

11. light emitting bipolar body lampbulbs as claimed in claim 10, is characterized in that, this electric connection comprises spiral lamp holder, joint type lamp holder and plug-in type lamp holder wherein any one.

12. light emitting bipolar body lampbulbs as claimed in claim 10, it is characterized in that, this radiator comprises multiple radiating fin, this radiation shell is a kind of element of tubulose, this radiation shell has a sidewall, this radiating fin multiple around and be fixedly arranged on the outside of this radiation shell, this heat-conducting plate is a metallic plate.

13. light emitting bipolar body lampbulbs as claimed in claim 10, it is characterized in that, this drive circuit comprises: a rectifier, a light-emittingdiode driver and

Filter condenser, this two power line of this electric connection is electrically connected with an input side of this rectifier respectively, one outlet side of this rectifier comprises a cathode output end and a cathode output end is electrically connected at this cathode circuit of this printed circuit and this cathode traces respectively, wherein this filter condenser has one first pin and one second pin, and this first pin and this second pin are connected across this cathode output end and this cathode output end of this outlet side respectively.

14. light emitting bipolar body lampbulbs as claimed in claim 10, it is characterized in that, this drive circuit board is arranged at this inner chamber of this radiation shell, and makes a side surface of this drive circuit board contact with this heat-conducting plate of this radiator.

15. light emitting bipolar body lampbulbs as claimed in claim 10, it is characterized in that, this drive circuit board comprises one first conducting element and one second conducting element, this first conducting element and the electronic component of this second conducting element for comprising in this drive circuit, this first conducting element and this second conducting element can be metal stitch and terminal wherein any one.