KR20080083406A - Light emitting diode light source module - Google Patents

Abstract

An LED(Light Emitting Diode) light source module is provided to extend lifespan of an LED light source by dividedly forming a metal layer in an LED module unit and a circuit module unit on a rear surface of a PCB(Printed Circuit Board). An LED light source module(100) includes a PCB(110), LED modules(120), and circuit modules(130,140). An LED module unit(150a) and a circuit module unit(150b) are defined on the PCB. The PCB has electrodes of circuit patterns on an upper surface and a metal layer(150) insulated from the electrodes on a rear surface. The LED modules are formed in the LED module unit on the PCB and have terminal units electrically connected to the electrodes. The circuit modules are formed in the circuit module unit on the PCB and electrically connected to the LED modules through the circuit patterns to drive the LED modules.

Description

LED light module {LIGHT EMITTING DIODE LIGHT SOURCE MODULE}

1 is a cross-sectional view schematically showing an LED light source module according to the present invention.

2A to 2C are diagrams showing an example of the configuration of colors for the LED module and the fluorescent lens formed thereon;

<Explanation of symbols for main parts of the drawings>

100: LED light source module 110: printed circuit board

120: light emitting element 130: general circuit

140: driving circuit 150: metal layer

160: protective lens

The present invention relates to an LED lamp, in particular, the LED module unit and the driving circuit unit for driving the LED module unit is formed on the same substrate, and the LED module unit and the heat dissipation of the LED module unit by structurally separating the LED module compact It relates to an LED light source module that can be angry.

In general, various types of lamps are used to provide light or to irradiate an object at night or indoors. Such lamps are powered by converting electrical energy into light energy to provide light or irradiating an object. Recently, a metal halide lamp is generally used. The metal halide lamp is formed by encapsulating metal elements such as scandium, thorium, and sodium in addition to mercury and argon gas in a light emitting tube with a metal halide compound, which is a kind of halogen element. Compounds evaporate to dissociate into metal atoms and halogen (urea) atoms during the high temperature of the arc discharge, and the metal atoms strongly emit the specific spectrum of the element.

The metal halide lamp emits 360 degrees of light from a light source, and the actual total luminous flux of light falling on the ground is about 50% of the initial luminous flux, and the remainder is distributed to the surroundings. The pollution caused by light is serious.

Therefore, in order to solve this problem, an LED street light having a characteristic that a reflection shade is used for an existing light source or light is emitted in one direction has been developed.

In the case of an LED light source, the light emitting part includes an LED module part and a control module circuit module part. Since the LED module part and the circuit module part are separately configured on different substrates, a connection wiring connecting the LED module and the circuit module to each other is provided. This leads to complex module arrangements, resulting in constraints on luminaires.

In particular, the driving circuit is increased when the light is produced by highlighting the advantages of the LED, in which case more connection line is exposed, there is a limit to use.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to configure the LED module portion and the circuit module portion on the same substrate, thereby reducing the connection wiring between them and making it possible to achieve luminaires. It is to provide an LED light source module.

Another object of the present invention is to configure the LED module unit and the circuit module unit on the same substrate, but by structurally separating the heat sink of the LED module unit and the circuit module unit, the resistance limit according to the heat dissipation of the LED module unit and the circuit module unit It is to provide an LED light source that can prevent the life of the LED light source is lowered due to the difference.

In order to achieve the above object, the present invention, the LED module and the circuit module is defined, the printed circuit board is formed on the upper surface of the electrode of the circuit pattern, the metal layer is insulated from the electrode on the back; An LED module formed on the LED module on the printed circuit board and having a terminal portion electrically connected to the electrode; And a circuit module formed on a circuit module on the printed circuit board and electrically connected to the LED module through the circuit patterns to drive the LED module.

In this case, the circuit module includes a power converter for converting an AC voltage into a DC voltage.

It may be configured to further include a lens for protecting the LED module and the circuit module, wherein the lens may be a fluorescent lens including at least one or more colors of red, green or blue, or may be a yellow fluorescent lens The LED module may include at least one of a red LED, a green LED, and a blue LED. It is also possible that the LED module is a white LED.

On the other hand, the LED module may further include a reflecting plate formed on the upper surface, the reflecting plate may be formed of one of metal materials such as metal, silver, gold, copper, platinum, chromium, aluminum, or may be formed of a polymer of PPA material have.

The metal layer may be formed by separating the LED module unit and the circuit module unit, respectively.

In addition, according to the present invention, the LED module and the circuit module are defined, and an electrode having a circuit pattern is formed on an upper surface thereof, and a metal layer insulated from the electrode is formed on a rear surface thereof, wherein the metal layer is formed of an LED module unit and a circuit module. Printed circuit boards formed separately from each other; An LED module formed on the LED module on the printed circuit board and having a terminal portion electrically connected to the electrode; And a circuit module formed on a circuit module on the printed circuit board and electrically connected to the LED module through the circuit patterns to drive the LED module.

In this case, the circuit module, the circuit module includes a power converter for converting an AC voltage into a DC voltage.

In addition, further comprising a lens for protecting the LED module and the circuit module, the lens may be a fluorescent lens including at least one or more colors of red, green, or blue, or may be a yellow fluorescent lens. The LED module may include at least one or more of a red LED, a green LED, or a blue LED, and may also be a white LED.

The display panel may further include a reflector formed on the LED module. The reflector may be formed of one of metal materials such as metal, silver, gold, copper, platinum, chromium, and aluminum, or may be formed of a polymer made of PPA. .

The present invention as described above, by forming the LED module and the circuit module on the same printed circuit board, reducing the connection wiring for electrically connecting the LED module and the circuit module, not only simplify the LED lighting module, but also luminaire Can be tried.

In particular, the present invention is to form the same LED module and the circuit module on the same printed circuit board, a metal layer (for example, aluminum layer or copper foil) formed to release heat on the back of the printed circuit board, LED module or circuit By separately forming the module and the corresponding area, it is possible to ignore the mutual influence due to the difference in the amount of heat generated in each of the LED module and the circuit module, thereby preventing damage to the LED module.

Hereinafter, the LED lighting module according to the present invention will be described in more detail with reference to the accompanying drawings.

1 shows a lighting LED module according to the present invention.

As shown in the figure, the illumination LED light source module 100 according to the present invention, a printed circuit board (110) and the LED module unit and a circuit module unit for driving the LED module is defined, and the LED A plurality of light emitting devices 120 formed in the module unit, and the circuit module 130, 140 for controlling the light emitting device 120.

The printed circuit board 110 is a metal printed circuit board having a good heat dissipation effect of improving the heat dissipation performance by attaching a flexible PCB (flexible PCB) consisting of polyimide to the upper part of the heat dissipator of a high thermal conductivity metal component using an adhesive. In this case, the LED module is mounted on the upper surface of the flexible PCB and is connected to an electrode circuit formed on the upper surface of the flexible PCB through wires or soldering to receive a current.

Alternatively, the printed circuit board 110 may be a printed circuit board made of a resin-based material in which an electrode circuit for electrically connecting an LED lamp to an upper surface thereof may be formed. The heat sink is attached to the lower part.

The printed circuit board 110 may include a metal printed circuit board, a resin printed circuit board, or a metal layer 150 formed of aluminum or copper foil on a lower surface thereof. The metal layer 150 may have a lifetime of a light emitting device. In order to improve, the LED module 150a and the circuit module 150b may be structurally separated from each other. Advantages of the structure in which the metal layer 150 is separated will be described in more detail later.

In addition, although not shown in Figure 1, to protect the LED module and the circuit module, the lens is configured on the upper surface, the lens can be configured in various ways, depending on the color of the light emitting device constituting the LED module. .

In the LED module unit, a light emitting device 120 having an arbitrary n x m matrix and electrically connected to the printed circuit board 110 is configured in a matrix form.

The light emitting device 120 configured in the LED module unit may produce white and multicolor light having high luminance by various combinations of red, green, and blue, and include at least one red, green, or blue light emitting device. .

In addition, as mentioned above, the color of the protective lens 160 covering the upper portion of the light emitting device 120 may be configured differently. A white light emitting element may be used, or colored light emitting elements may be arranged, and the protective lens 160 may be configured as a colored fluorescent lens.

2A to 2C. First, as shown in FIG. 2A, when the light emitting device 120 is a blue light emitting device B, the lens 160 formed on the upper portion of the light emitting device 120 is red ( A color lens in which a fluorescent layer of R) and green (G) is stacked may be used, and as shown in FIG. 2B, when the light emitting device 120 includes a blue light emitting device (B) and a red light emitting device (R). The protective lens 160 may be formed of a green lens G. As illustrated in FIG. 2C, when the light emitting device 120 is the white light emitting device 120, the color lens 160 having the fluorescent layers of red (R), green (G), and blue (B) may be used. Can be used.

On the other hand, it is also possible to further enhance the color tone by placing a reflector (not shown) having individual fluorescent characteristics on the upper portion of the light emitting device 120, that is, the inner wall of the lens. That is, when the reflector is formed on the light emitting device 120, it is possible to extract the light by reflecting the light generated from the light emitting device 120, it is possible to produce a high luminance light emission. Therefore, the reflector is preferably formed of a material having a high light reflectivity, for example, the reflector is formed of one of metal materials such as metal, silver, gold, copper, platinum, chromium, aluminum, or a polymer of PPA material It can be formed as.

In the circuit module unit, circuit modules 130 and 140 are mounted to control light emitting devices of the LED module. The circuit modules 130 and 140 are a general circuit 130 and a driving circuit 140. ) Is included together, and the general circuit 130 is integrated with a rectifier, a resistor and a coil. In addition, the driving circuit 140 may be configured to independently drive the LED module. That is, when defining the same color light emitting device as one LED group, it is possible to drive each LED group individually.

It is also possible to include a power conversion circuit for converting an AC voltage into a DC voltage. When the power switching circuit is included together with the circuit module unit, since the power converter does not need to be separately mounted on the printed circuit board, the area of the printed circuit board may be reduced, and the power converter may not be mounted on the circuit module. This has the advantage of reducing the connection wiring for the connection.

As described above, in the present invention, the printed circuit board constituting the LED module and the printed circuit board constituting the circuit module are formed on one printed circuit board without being separated, thereby connecting the LED module and the circuit module. By forming the electrodes on the printed circuit board, it is exposed on the printed circuit board, thereby minimizing the connection wiring connecting the LED module and the circuit module.

In addition, the present invention is formed to be structurally separated from the LED module unit and the circuit module unit for the metal layer 150 formed for heat dissipation on the back of the printed circuit board 110, to prevent shortening the life of the LED light do. That is, due to the interaction caused by the difference between the heat generation generated in the LED module unit and the heat generation generated in the circuit module unit may lead to shortening the life of the LED lighting, in the present invention, the printed circuit board 110 contributes to heat generation By forming the metal layer 150 of the LED module unit and the circuit module independently of each other, it is possible to block the interaction between them, it is possible to prevent the life of the LED lighting due to the difference in the resistance limit due to heat generation.

As described above, the basic concept of the present invention is that, in constructing an LED light source module for lighting, the LED module having a plurality of light emitting elements and a circuit module for controlling the LED module are configured on the same printed circuit board. Compared to the LED light source module that the module and the circuit module are configured on a separate printed circuit board, the connection wiring for electrically connecting the LED module and the circuit module can be minimized.

Further, the printed circuit board of the present invention has a metal layer such as aluminum or copper foil for heat dissipation is formed on the back, the metal layer is structural, with respect to the LED module portion having the LED module and the circuit module portion having the circuit module, Since it is formed in a separate form, it is possible to prevent the life of the LED module due to the heat generation difference between the LED module and the circuit module.

As described above, the present invention, by configuring the LED module and the circuit module for controlling the LED module together on the same substrate (printed circuit board), to achieve the luminaire, reducing the connection wiring connecting them, LED The light source module can be made slimmer.

In addition, the present invention constitutes the LED module portion and the circuit module portion on the same substrate, but by separating the metal layer formed on the back of the printed circuit board in the two regions of the LED module portion and the circuit module portion, the life of the LED light source Extend.

Claims (21)

A printed circuit board having an LED module portion and a circuit module portion defined, an electrode having a circuit pattern formed on an upper surface thereof, and a metal layer formed on the rear surface thereof with an insulated state from the electrode; An LED module formed on the LED module on the printed circuit board and having a terminal portion electrically connected to the electrode; And And a circuit module formed on a circuit module portion on the printed circuit board and electrically connected to the LED module through the circuit patterns to drive the LED module. The method of claim 1, The circuit module LED power source module comprising a power conversion circuit for converting the AC voltage into a DC voltage. The method of claim 1, LED light source module characterized in that it further comprises a lens for protecting the LED module and the circuit module. The method of claim 3, The lens is a LED light source module, characterized in that the fluorescent lens containing at least one color of red, green or blue. The method of claim 3, The lens is an LED light source module, characterized in that the yellow (Yellow) fluorescent lens. The method of claim 3, The LED module, LED light source module comprising at least one or more of the red LED, green LED or blue LED. The method of claim 1, The LED module is a LED light source module, characterized in that the white LED. The method of claim 1, LED light source module characterized in that it further comprises a reflecting plate formed on the LED module. The method of claim 8, The reflector is a LED light source module, characterized in that formed of one of a metal material, such as metal, silver, gold, copper, platinum, chromium, aluminum. The method of claim 8, The reflector is an LED optical module, characterized in that formed of a polymer of PPA material. The method of claim 1, The metal layer is a LED light source module, characterized in that formed separately from the LED module and the circuit module. An LED module unit and a circuit module unit are defined, and an electrode having a circuit pattern is formed on an upper surface thereof, and a metal layer in an insulated state is formed on the rear surface thereof, wherein the metal layer is formed by separating the LED module unit and the circuit module unit, respectively. Printed circuit board; An LED module formed on the LED module on the printed circuit board and having a terminal portion electrically connected to the electrode; And And a circuit module formed on a circuit module portion on the printed circuit board and electrically connected to the LED module through the circuit patterns to drive the LED module. The method of claim 12, The circuit module, the circuit module LED light source module, characterized in that it comprises a power conversion circuit for converting an AC voltage into a DC voltage. The method of claim 12, LED light source module characterized in that it further comprises a lens for protecting the LED module and the circuit module. The method of claim 14, The lens is a LED light source module, characterized in that the fluorescent lens containing at least one color of red, green or blue. The method of claim 14, The lens is an LED light source module, characterized in that the yellow (Yellow) fluorescent lens. The method of claim 12, The LED module, LED light source module comprising at least one or more of the red LED, green LED or blue LED. The method of claim 12, The LED module is a LED light source module, characterized in that the white LED. The method of claim 12, LED light source module characterized in that it further comprises a reflecting plate formed on the LED module. The method of claim 19, The reflector is a LED light source module, characterized in that formed of one of a metal material, such as metal, silver, gold, copper, platinum, chromium, aluminum. The method of claim 19, LED reflector, characterized in that the reflector is formed of a polymer of PPA material.

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