KR20090092215A - Led lighting apparatus and circuit array method drived for ac power sources - Google Patents

Abstract

An LED lighting device and an array method of a driving circuit are provided to improve light efficiency and power factor by applying an SMD(Surface Mount Device) type LED to a driving circuit. An LED lighting device includes an LED driving circuit part(20) and an LED array part(10). The LED driving circuit part has a rectifying part(23). The rectifying part comprises a bridge diode(22). The rectifying part rectifies a power inputted through a power input part(21). The power input part has a fuse for blocking an AC power in inputting an over AC power. The LED array part includes a plurality of LEDs(L) and a voltage drop device(25). The LED array part drives the LED by the power rectified by the LED driving circuit part. A controller(27) controls brightness of the LED by controlling an amount of an input current through a PWM(Pulse Width Modulation) control.

Description

Arrangement method of LED lighting device and driving circuit driven by AC power {LED LIGHTING APPARATUS AND CIRCUIT ARRAY METHOD DRIVED FOR AC POWER SOURCES}

The present invention relates to a method of arranging an LED lighting device and a driving circuit driven by an AC power source.

In detail, the present invention excludes a separate configuration for stepping down voltages for commercially available AC voltages, and operates by alternating rectification circuits and LEDs without the need for a dedicated circuit configuration such as a converter. The present invention relates to a method of arranging an LED lighting device and a driving circuit driven by an AC power source to implement LED lighting to reduce product size and reduce manufacturing costs.

In addition, in order to drive the LED driving circuit more stably, each of the driving circuits including the LED is divided into block units for a single power supply, and at the same time, each of the driving circuits and the elements constituting the driving circuits is provided. The present invention relates to a method for arranging an LED lighting device and a driving circuit driven by an AC power source in which the arrangement is optimized.

In addition, the present invention allows a plurality of light emitting chips to be connected in series in the surface mount device (SMD) type of LED device to further simplify the configuration of the product, and the The present invention relates to a method of arranging an LED lighting device and a driving circuit driven by an AC power source that optimizes the number of arrays so that the power factor and light efficiency are excellent.

In particular, the present invention mounts the elements of the LED driving circuit in the form of Surface Mount Technology (SMT) on the printed circuit board, and molding the thermal conductive material on the printed circuit board mounted with each device on the LED and the driving circuit The present invention relates to a method of arranging an LED lighting device and a driving circuit driven by an AC power source to improve heat dissipation efficiency generated and to minimize leakage current emitted on a printed circuit board to improve power supply efficiency.

The lighting device applied to the interior space lighting of the building using the LED is mainly applied to the main lamp of the room or the office, the table stand, etc., and can further illustrate the lighting tile using the light guide plate in a more advanced form.

Such a lighting device is configured by arranging a plurality of LED modules in which a plurality of LEDs are mounted in a specific arrangement, and installing the LED modules to a ceiling or a wall of a space. In particular, the LED module is accompanied by the A / D converter due to the characteristic that the LED is driven by a DC current of a suitable voltage.

The A / D converter as described above includes a transformer coil for stepping down alternating current, and such a transformer coil is disposed at a considerable size in the LED module, which causes a problem in that a product to which it is applied is enlarged.

In order to solve the above problems, a power supply device called a switching mode power supply (SMPS) is recently applied. For reference, the SMPS is used by converting an alternating frequency (50 Hz ~ 60 Hz) into a direct current to a high frequency (tens dozens of hundreds ~ hundreds of kHz), according to the technology of high difficulty.

In particular, the conventional LED lighting device generates a considerable amount of heat when driven due to the characteristics of the LED, which is accompanied by a heat dissipation configuration because it adversely affects the circuit.

Such a heat dissipation configuration is typically implemented by combining a heat sink made of metal for performing heat exchange with the outside atmosphere by receiving lead from the printed circuit board of the LED part and the printed circuit board of the driving circuit part.

SMPS applied for power supply of the LED lighting device as described above, despite the above-mentioned advantages, the price is very expensive, the frequency is applied to the LED module requiring simple lighting is very low. At this time, since the SMPS itself is also considerably larger than the size of the LED module, there is a problem in miniaturization of the LED module, which makes it difficult to miniaturize the product itself.

In addition, when manufacturing a single product that requires a large amount of LED, the LED lighting device is connected to a certain number of LEDs in this product to form a group, and by connecting the series of LED groups connected in series again to expand the LED Done. At this time, when a failure occurs in any one of the LED group, the LED group having a failure can be replaced to perform LED driving, but if a failure occurs in the drive circuit itself for driving these LED groups Instability occurs because the entire LED group itself is not driven.

In addition, since SMD-type LEDs, which are mainly applied to the LED lighting device, are connected in parallel with light emitting chips therein, it is very inconvenient to set the voltage drop generated in each device even when the LEDs are connected in series. In order to prepare a number of LEDs in the series connection, a large amount of LEDs are required regardless of the number of built-in LEDs.

In particular, the heat sink applied by the heat dissipation configuration of the LED lighting device has a problem that the heat sink itself is made of a considerable size, and because the material is formed of a metal material such as aluminum, a considerable difficulty is exposed to simplify and lighten the product. .

The present invention has been invented to solve the above problems and has the following objectives.

The first object of the present invention is to provide a LED lighting device that can be driven by an alternating current by adjusting the rectification circuit and the number of LEDs, the configuration for implementing the LED lighting, and reduced the size of the product and the production cost There is a purpose.

The second object of the present invention is that the LED driving circuit is divided into several block units for a single power supply, and the LED driving circuit can be driven more stably by always allowing a constant power to be input regardless of the input voltage of the power supply. It is to provide an LED lighting device.

The third object of the present invention is to implement a SMD (Surface Mount Devices) type LED in which a plurality of light emitting chips are connected in series, and to apply it to the LED driving circuit to further simplify the composition of the product. At the same time, to provide an LED lighting device that is excellent in power factor and light efficiency required for lighting implementation.

A fourth object of the present invention is to mount each element of the LED drive circuit on the printed circuit board by SMT (Surface Mount Technology) on the printed circuit board, and these elements are mounted. The present invention provides an LED lighting device in which a thermally conductive material is molded on a printed circuit board to minimize heat dissipation efficiency and leakage current.

A fifth object of the present invention is to provide a process of arranging a driving circuit of an LED lighting apparatus so that the arrangement of a plurality of LED driving circuits and elements constituting these LED driving circuits is optimized when implementing the LED lighting apparatus.

In order to achieve each of the objects described above, the present invention has the following configuration.

The present invention to achieve the first object, the LED driving circuit unit for rectifying and input through the power input unit; And an LED array unit configured to perform a voltage drop on the LEDs connected in series by the number corresponding to the input power rectified by the LED driving circuit unit to drive the LEDs.

At this time, the power input unit is configured to include a fuse for blocking the power input when an excessive AC power exceeds the rating from the outside. In addition, the present invention is configured to further include a controller to control the driving brightness of the LED by controlling the input amount of current through the PWM control.

In order to achieve the second object of the present invention, the LED driving circuit unit and the LED array unit is connected to correspond to each one 1: 1 is composed of a single block unit circuit, a plurality of block unit circuits are connected in parallel for a single commercial power supply It consists of a single lighting product.

Here, the LED driving circuit unit includes a rectifying unit composed of a bridge diode to rectify the commercial power input from the outside, the LED array unit for performing a voltage drop corresponding to the number of serially connected LEDs for the commercial power input The voltage drop element is configured in series with the LED.

In addition, the driving circuit unit includes a constant voltage circuit for supplying a constant voltage power irrespective of the voltage of the commercial power source input, the constant voltage circuit is a pair of zener diodes or varistors to maintain a constant voltage for the bidirectional voltage It is configured by applying (varistor) element.

In order to achieve the third object of the present invention, the LED is applied in the form of SMD having a plurality of light emitting chips therein, the light emitting chips are configured in series with each other. At this time, the light emitting chip of the LED or SMD-type LED made of a single light emitter of the LED is connected in series of 30 to 84 for the commercial power of 100V ~ 240V.

In order to achieve the fourth object of the present invention, in the driving circuit unit, a plurality of LEDs are mounted and mounted on one surface of a printed circuit board, and each device for driving the LEDs is mounted in an SMT form on each side of the printed circuit board. A heat conductive material layer is formed on the back side.

Here, the thermally conductive material layer is formed by applying a composition having a thermal conductivity function by adding and mixing any one or more materials of carbon, CNT, and graphite to the synthetic resin. In particular, the thermally conductive material layer is configured to maintain a thermal conductivity of 0.001 W / m.k to 30 W / m.k.

In order to achieve the fifth object, the present invention rectifies the commercial power input through the rectifying unit, and supplies the rectified power to the LED array unit in which the plurality of LEDs and the voltage drop element are connected in series to the LED by the voltage drop of each element. Arranging a plurality of LEDs on one surface of a printed circuit board in a process of configuring a driving LED lighting device; Arrange an element for driving the LED in the SMT form on the back side of the printed circuit board, two of the four bridge diode of the rectifying part is arranged at the input terminal and the other two at the output terminal, between the series connected LED Arranging a voltage drop element to configure a driving circuit unit.

Particularly, the present invention forms a block unit circuit by connecting the LED driving circuit unit and the LED array unit corresponding to the single commercial power source in a 1: 1 correspondence, and then connects the formed block unit circuits in parallel to manufacture a single product. To perform further;

As described above, the present invention does not require a configuration such as a trans coil or a dedicated SMPS in the configuration for implementing the LED lighting, so that the product can be further miniaturized, and the manufacturing cost is reduced by the simplified circuit configuration. At the same time, it is possible to improve the product satisfaction of the consumer and at the same time increase the productivity by rapid production.

In addition, the present invention is implemented by dividing the LED drive circuit in the form of several blocks for a single power supply, the simplification of the circuit and the light weight of the product is realized, the LED drive circuit and the arrangement of the elements constituting the LED drive circuit Optimized, the LED driving circuit is driven more stably so that a constant voltage power is always input regardless of the voltage of commercial power input, thereby improving the satisfaction of using the product.

In addition, the present invention can further simplify the configuration of the product by the series connection configuration of the light emitting chip embedded in the SMD-type LED, and the power factor and light efficiency required to implement lighting by optimizing the number of the LED and the light emitting chip The effect is to produce a good product.

In addition, the present invention can be expected excellent heat dissipation efficiency by the element mounted by the SMT on the printed circuit board and the configuration of these elements with a thermally conductive material, in particular by molding the material containing carbon as a main component By minimizing the leakage current on the printed circuit board it is possible to implement a more stable LED driving circuit.

1 is a circuit diagram of an LED lighting apparatus according to the present invention.

2 is a block diagram of an application embodiment LED lighting device of the present invention.

Figure 3 is a block diagram of the LED circuit configuration of the LED lighting device of an embodiment of the present invention.

4 is an actual circuit diagram of an application embodiment LED lighting device of the present invention.

5 is a perspective view of one side of a printed circuit board of the LED lighting apparatus according to the present invention.

Figure 6 is a perspective view of the other side of the printed circuit board of the LED lighting apparatus according to the present invention.

7 is a cross-sectional view of the LED lighting apparatus according to the present invention.

8 is an exemplary view of the LED of the LED lighting apparatus according to the present invention.

9 is a LED connection diagram of the LED lighting apparatus according to the present invention.

10 is a flow chart of the driving circuit unit arrangement of the LED lighting apparatus according to the present invention.

11 is a view showing an application example 1 of the present invention.

12 is a cross-sectional view of an application example 1 of the present invention.

13 is an exemplary view illustrating an application example 2 of the present invention.

14 is a exemplified application example 3 of the present invention.

15 is a view showing an application example 4 of the present invention.

16 is an exemplary view of an application example 5 of the present invention;

17 is an exemplary view of an application example 6 of the present invention.

<Description of the symbols for the main parts of the drawings>

10: LED array 20: LED drive circuit

22: bridge diode 23: rectifier

24: thermally conductive material layer 30: constant voltage circuit

31: Varistor B: unit block circuit

L: LED L ': Light emitting chip

An embodiment to which the present invention as described above is applied will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram of an LED lighting apparatus according to the present invention.

Referring to the drawings, the LED lighting apparatus according to the present invention has a basic configuration consisting of the LED driving circuit unit 20, LED array unit 10.

The LED driving circuit unit 20 is composed of a rectifier 23 composed of a power input unit 21 and a bridge diode 22 for rectifying the commercial power input through the power input unit 21. Here, it turns out that the commercial power source is an AC power source of 100V ~ 240V used in general homes and industrial sites.

Here, the power input unit 21 includes a fuse 26 for shutting off the external power in a specific situation. Here, the specific situation refers to a situation in which excessive AC power exceeding a rating is input from the outside due to an unforeseen factor such as a short circuit.

The LED array unit 10 includes a plurality of LEDs (L) and a voltage drop element 25 such as a resistor in series to correspond to the aforementioned 220V power source. The LED array unit 10 is configured to drive the LED L to a desired voltage by receiving the power rectified by the rectifier 23.

For example, when the external AC voltage is inputted as 220V and the driving voltage of the LED L is 3.2V, 60 LEDs are connected in series and the voltage of 192V is divided into the LEDs. When the remaining 8V voltage is applied to the voltage drop element 25, a stable circuit can be obtained.

In addition, in order to further expand the LED array unit 10, a plurality of LEDs (L) and the voltage drop element 25 in series configuration of a set of a plurality of sets can be connected in parallel, in the <Application Example> will be described later As described above, the LED driving circuit unit 20 and the LED array unit 10 may be configured as a set of unit block circuits B to connect a plurality of unit block circuits B in parallel.

In addition, the LED driving circuit unit 20 is configured to include a controller 27 to adjust the brightness of the LED (L) when driving. At this time, the controller 27 is configured to control the input brightness of the current through PWM (pulse width modulation) control to adjust the driving brightness of the LED (L).

<Application Example>

Figure 2 is a block diagram of an application embodiment LED lighting device of the present invention, Figure 3 is a block diagram of the LED circuit configuration of the application embodiment LED lighting device of the present invention, Figure 4 is a practical view of the application embodiment LED lighting device of the present invention It is a circuit diagram.

5 is a perspective view of one side of a printed circuit board of the LED lighting apparatus according to the present invention, FIG. 6 is a perspective view of the other side of a printed circuit board of the LED lighting apparatus according to the present invention, and FIG. 7 is a cross-sectional view of the LED lighting apparatus according to the present invention. 8 shows an LED illustration of the LED lighting apparatus according to the present invention, Figure 9 shows the LED connection diagram of the LED lighting apparatus according to the present invention.

Referring to the drawings, an embodiment of the LED lighting device of the present invention by installing the LED array unit 10 and the LED driving circuit unit 20 for driving the LED (L) on a single printed circuit board (P) It is composed.

At this time, the LED array unit 10 and the LED driving circuit unit 20 is electrically connected to correspond to each other 1: 1 constitute a unit block circuit (B), the unit block circuit (B) is a single commercial power source It is configured to be implemented in a single product by connecting a plurality of parallel to the. In particular, the unit block circuit (B) is divided on both sides of a single printed circuit board (P) is composed of each element is mounted by the SMT.

By such a configuration, even if a failure occurs in any part of the LED driving circuit unit 20 or the LED array unit 10 in a single lighting device product, the entire lighting device product itself is the unit block circuit (B) in which the failure occurs. The remaining unit block circuit B is allowed to perform a normal operation.

The LED driving circuit unit 20 is composed of a power input unit 21 and a rectifying unit 23 for rectifying AC power to the bridge diode 22 as in the original embodiment, in which the constant voltage circuit 30 is It is further configured.

The constant voltage circuit 30 is configured to supply power of a constant voltage regardless of the voltage of the input power. That is, the constant voltage circuit 30 is a configuration for realizing a free volt and a pair of zener diodes or varistors 31 for maintaining a constant voltage with respect to an AC voltage having a voltage in both positive and positive directions. It is configured by applying an element.

The LED array unit 10 is composed of a plurality of LED (L) is connected in series, the LED array unit 10 is a voltage drop element 25 for performing a voltage drop that is not satisfied in the LED (L) It is configured to include the same as in the original embodiment. At this time, the voltage drop element 25 is mainly configured by applying a resistance. In particular, the voltage drop element 25 is preferably installed in a uniform number of LED (L) arrangement point to ensure a uniform voltage drop rate for each section of the LED (L) connected in series.

In addition, the LED (L) can be applied to a device made of a single light emitter, it is preferable to apply the SMD form in order to reduce the size and weight of the product according to the dense configuration of the circuit. In this case, the SMD type LEDs L include two or more light emitting chips L '(two, three, four in the figure) as shown in FIGS. 9A, 9B, and 9C. Built-in, these light emitting chips L 'are manufactured in a connected state connected in series.

That is, the light emitting chip (L ') of the LED (L) or SMD type LED (L) made of a single light emitter of the LED (L) is connected in series of 30 to 84 pieces for commercial power of 100V ~ 240V It is composed. More specifically, the number of LEDs L or light emitting chips L 'for each power source is as follows.

-100V: 27 ~ 36 LEDs (LED driving voltage is 3.0V ~ 3.4V)

-110V: 30 ~ 39 LEDs (3.0V ~ 3.4V LED driving voltage)

-120V: 33 ~ 42 LEDs (LED driving voltage is 3.0V ~ 3.4V)

-220V: 63 ~ 78 LEDs (LED driving voltage is 3.0V ~ 3.4V)

-230V: 66 ~ 81 LEDs (LED driving voltage is 3.0V ~ 3.4V)

-240V: 69 ~ 84 LEDs (3.0V ~ 3.4V LED driving voltage)

Meanwhile, as described above, the LED driving circuit unit 20 is mounted on the printed circuit board P in the SMT form. At this time, the thermally conductive material layer 24 is formed on each of the device mounting surface to improve the self-heating efficiency of the LED driving circuit unit 20 to the maximum.

The thermally conductive material layer 24 is formed by coating a composition having a thermal conductivity function by adding and mixing any one or more materials of carbon, carbon nanotube (CNT), and graphite (graphite) to a synthetic resin. At this time, the synthetic resin by selecting a resin such as PMMA (Poly methy methacrylate: polymethyl methacrylate), epoxy, silicone, which can perform the unit operation of the thermal conductivity according to the addition of the carbon, CNT, graphite Apply. Application of the mixed composition of the synthetic resin and carbon, CNT, graphite is appropriately selected in consideration of product specifications.

In this case, the thermally conductive material layer 24 has a thermal conductivity of 0.001 W / W in consideration of the number of LEDs (L) in the LED array unit 10 and the amount of heat emitted from the corresponding LED driving circuit unit 20. It is desirable to maintain the mk ~ 30W / mk.

10 is a flow chart of the driving circuit unit arrangement process of the LED lighting apparatus according to the present invention.

Referring to FIG. 10 along with FIGS. 5 to 7, by arranging and mounting a plurality of LEDs (L) in the SMD form on one surface of the printed circuit board (P) to arrange the LED driving circuit unit of the LED lighting device. The LED array unit 10 is configured. (S3) Thereafter, an element of the LED driving circuit unit 20 for driving the LED L is disposed in the SMT form on the rear surface on which the LED L is mounted. (S4)

Here, a total of four bridge diodes 22 of the rectifier 23 among the elements of the LED driving circuit unit 20 are disposed, and two bridge diodes 22 are disposed on the input terminal of the LED driving circuit unit 20. Each device is connected and mounted, and the remaining two bridge diodes 22 are connected to each device on the circuit so as to be disposed at the output terminal of the LED driving circuit unit 20 (shown in FIG. 6) to form an overall closed circuit. (S5) After that, the voltage drop element 25 is mounted on the printed circuit board P for every desired number of LED L array points.

The LED array unit 10 and the LED circuit driving unit 20 completed by performing the above process are electrically connected to correspond to each other 1: 1 to form a unit block circuit (B), and the number of two or more for a single commercial power supply This is connected in parallel to complete a single product. (S8) The completed LED circuit driver 20 is implemented as a circuit capable of performing a more stable LED drive.

In addition, in the process of mounting the LED (L) by wiring so that each light emitting chip (L ') is connected in series in the SMD-type LED (L) with a plurality of light emitting chips (L') inside as described above The LED (L) is arranged so that the light emitting chips (L ') are connected in series to the number of 30 to 84 for a commercial power source of 100V to 240V (S1).

In addition, in the process of configuring the drive circuit unit 20, as described above, a composition having a thermal conductivity function by adding and mixing any one or more materials of carbon, carbon nanotube (CNT), and graphite (graphite) to the synthetic resin. The thermal conductive material layer 24 is formed by applying and molding the film. (S7)

<Application Example 1>

11 is a perspective view of an application example 1 of the present invention, Figure 12 is a cross-sectional view of an application example 1 of the present invention.

Referring to the drawings, the application example 1 illustrates a product to which the arrangement method of the LED lighting device and the driving circuit shown in the original embodiment and the application embodiment is applied.

Such a product is disposed in the LED array unit 10 configuration of the unit block circuit (B) such that the LED (L) has a longitudinal direction on the printed circuit board (P), the unit block circuit (B) is mounted The state in which the printed circuit board P is continuously arranged to have a longitudinal direction and manufactured in the form of a fluorescent lamp H is illustrated. At this time, each of the unit block circuit (B) is the LED array unit 10 and the LED driving circuit unit 20 is installed in a one-to-one correspondence, as described above.

In particular, the product manufactured in the form of such a fluorescent lamp (H) is coupled to the fluorescent lamp socket, after which some of the unit block circuit (B) is broken, the other unit block circuit (B) can be operated normally.

<Application Example 2>

13 is an exemplary view of Application Example 2 of the present invention.

Referring to the drawings, Application Example 2 illustrates a product implemented in the form of an incandescent lamp by the LED lighting device and the driving circuit arrangement method presented in the original embodiment and the application embodiment.

The incandescent lamp (F) form of the product in the configuration of the LED array unit 10 of the unit block circuit (B) LED (L) is arranged on the printed circuit board (P) in a circular shape or polygonal different from the drawings and The printed circuit board P has a circular or polygonal configuration. At this time, each of the unit block circuit (B) is a plurality of parallel connection and the LED array unit 10 and the LED driving circuit unit 20 of the unit block circuit (B) is electrically connected in a 1: 1 correspondence. Of course.

Since the incandescent lamp (F) type of product is composed of a plurality of unit block circuits (B) as in the first embodiment, even if some unit block circuit (B) failure occurs, other unit block circuit (B) operates normally It becomes possible.

In particular, the plurality of LED arrays 10 arranged at the light emitting point of the incandescent lamp (F) may be arranged in a variety of forms in the drawing, each of the LED arrays 10 at the three radially divided points 3 The arrangement arranged in rows is illustrated.

<Application Example 3>

14 is an exemplary view of Application Example 3 of the present invention.

Referring to the drawings, the LED lighting apparatus of the application example 3 shows a light guide plate lighting apparatus for forming a surface light source. In the above configuration, the light guide plate 40 represents an embodiment in which the light guide plate 40 is installed in a tile form on a wall surface or a bottom surface.

At this time, the light guide plate illumination device is applied to the LED array unit 10 is coupled to one surface as a light source 41, the application of a plurality of unit block circuit (B) according to the length and the number of connection of the light guide plate 41. Can be configured by installing as in

<Application Example 4>

15 is an exemplary view of Application Example 4 of the present invention.

Referring to the drawings, the LED lighting device of the application example 4 shows a lighting device applied to the stand coupled to the table or the wall.

The stand as described above has a basic configuration consisting of a base 50 in which the circuit configuration is built, and an illumination unit 51 in which the LED array unit 10 is installed by being installed at a constant height in the base 50. Reference numeral 53 in the figure is an operation unit of the controller 27 for adjusting the blinking and the brightness of the LED (L).

<Application Example 5>

16 is an exemplary view of Application Example 5 of the present invention.

Referring to the drawings, the LED lighting device of the application example 5 shows a lighting device applied to the main lamp of the room or room.

The lighting device as described above is formed in the form of a skirt for mounting the LED array unit 10 on the ceiling or wall surface, the outside of the mounting unit 60 reflects the light emitted from the LED array unit 10 It is made of a lamp shade 61 or to focus in a certain direction.

At this time, the operation unit of the controller 27 for adjusting the flashing and the brightness of the LED (L) can be installed on the wall of the room.

<Application Example 6>

17 is an exemplary view of Application Example 6 of the present invention.

Referring to the drawings, the LED lighting device of the application example 6 shows a lighting device applied as an outdoor street lamp.

The street lamp as described above is composed of a head 70 for emitting light, and a support 71 for installing the head 70 at a predetermined height from the ground. At this time, the LED array unit 10 is installed in the head 70, it is natural that the control configuration for supplying power to the LED array unit 10 or controlling the flashing of the LED (L) and the brightness of light is installed. Do.

In addition to the various application examples as described above, the LED lighting device according to the present invention applies individual LEDs (L) in various colors, or is configured to emit light of various colors for each unit block circuit (B), general lighting and various interior lighting. Can be applied.

Claims (15)

An LED driving circuit unit 20 rectified and supplied through the power input unit 21; It includes; LED array unit 10 for driving the LED (L) by performing a voltage drop in the LED (L) connected in series in the number corresponding to the input power rectified by the LED driving circuit unit 20; LED lighting device driven by an AC power source characterized in that. The method of claim 1, wherein the power input unit 10 When excessive AC power exceeding the rating is input from the outside, LED lighting device using an AC power supply, characterized in that it comprises a fuse (26) for blocking the power input. The method of claim 1, LED lighting device using an AC power source, characterized in that it further comprises a controller 27 to control the input brightness of the current through the PWM control to adjust the driving brightness of the LED (L). The method of claim 1, The LED driving circuit unit 20 and the LED array unit 10 are each connected in a one-to-one correspondence and constitute a single block unit circuit B. A plurality of block unit circuits B are provided for a single commercial power supply. LED lighting device driven by an AC power source, characterized in that connected in parallel consisting of a single lighting product. The method of claim 4, wherein The LED driving circuit unit 20 includes a rectifying unit 23 composed of a bridge diode 22 to rectify the commercial power input from the outside, the LED array unit 10 LED (L) for the commercial power input LED lighting device driven by an AC power source, characterized in that the voltage drop element 25 for performing a voltage drop corresponding to the number of series connected in series with the LED (L). The method of claim 4 or 5, wherein the driving circuit unit 20 It includes a constant voltage circuit 30 for supplying a constant voltage power irrespective of the voltage of the commercial power input, the constant voltage circuit 30 is a pair of zener diodes or varistors to maintain a constant voltage for the bidirectional voltage (varistor) An LED lighting device driven by an AC power source, characterized by applying an element. The method according to claim 1 or 4, wherein the LED (L) is Applied in the form of a SMD having a plurality of light emitting chips (L ') therein, the light emitting chip (L') is driven by an AC power source, characterized in that configured in series connected to each other. The method of claim 7, wherein Among the LEDs (L), the light emitting chip (L ') of the LED (L) or SMD type LED (L) of a single light emitting device is characterized in that the number of 30 to 84 in series for commercial power of 100V ~ 240V LED lighting device driven by AC power. The method of claim 1, wherein the driving circuit unit 20 A plurality of LEDs (L) are arranged and mounted on one side of the printed circuit board (P), and each element for driving the LED (L) is mounted on the back side of the printed circuit board (P) in the form of SMT, and a thermally conductive material on the back side of each element is mounted. LED lighting device driven by an AC power source, characterized in that the layer (24) is formed. 10. The method of claim 9 wherein the layer of thermally conductive material 24 An LED lighting device driven by an AC power source, characterized in that formed by coating a composition having a thermal conductivity function by adding and mixing any one or more materials of carbon, CNT, graphite to the synthetic resin. 10. The method of claim 9 wherein the layer of thermally conductive material 24 An LED lighting device driven by an AC power source, characterized in that the thermal conductivity is maintained at 0.001W / m.k ~ 30W / m.k. The method of claim 4, wherein The unit block circuit B has an LED L disposed on the printed circuit board P so as to have a length direction, and the printed circuit board P on which the plurality of unit block circuits B is mounted is long. LED lighting device which is disposed to have a direction and installed in a fluorescent lamp (H) type lighting lamp, characterized in that the drive. The method of claim 4, wherein The unit block circuit B is disposed and mounted on a printed circuit board P so as to have a circular or polygonal shape on a plane, and the printed circuit board P is disposed to have a circular or polygonal shape on a plane and is incandescent lamp (F). LED lighting device driven by an AC power source, characterized in that installed in the type of lighting. The rectified power is rectified through the rectifying unit 23, and the rectified power is supplied to the LED array unit 10 in which the plurality of LEDs (L) and the voltage drop element 25 are connected in series, thereby reducing the voltage of each element. In the process of configuring the LED lighting device for driving the LED (L), Arranging a plurality of LEDs (L) on one surface of a printed circuit board (P); Arrange the element for driving the LED (L) in the SMT form on the back surface of the printed circuit board (P), two of the four bridge diodes 22 of the rectifier 23 is disposed at the input terminal and the other two Arranged at the output terminal, arranging the voltage drop element 25 between the LED (L) connected in series to configure the driving circuit unit 20; LED lighting apparatus for driving by an AC power source comprising a Arrangement method of driving circuit. The method of claim 14, After connecting the LED driving circuit unit 20 and the LED array unit 10 to correspond to the single commercial power source to form a block unit circuit B, a plurality of formed block unit circuits B are paralleled. Method of arranging a driving circuit of the LED lighting device to be driven by an AC power source comprising a; producing a single product by connecting to.