KR100953980B1 - Light module in which converter integrated and light system comprising the same - Google Patents

Abstract

PURPOSE: A light emitting module and a light emitting system including the same are provided to improve space availability of a picture frame and a signboard by integrating a converter with a light emitting unit on one circuit board. CONSTITUTION: A light emitting module includes a plurality of light emitting devices(L11-L1n,Lm1-Lmn), a converter(20), and a plurality of first power lines. The light emitting devices are arranged on one side of a circuit board(10). The converter is arranged on the circuit board and coverts an AC voltage into a constant current or voltage and supplies the constant current or voltage into the plurality of light emitting devices. The plurality of first power lines is formed on one side of the circuit board. The width of each first power line is larger than the space between adjacent first power lines.

Description

Light emitting module with integrated converter and light emitting system comprising the same

The present invention relates to a light emitting module and a light emitting system including the same.

A light emitting element such as a light emitting diode (LED) emits light by combining electrons and holes. Such a light emitting device has a low power consumption, a long lifespan, can be installed in a narrow space, and has a strong resistance to vibration. BACKGROUND ART Such light emitting devices have recently been expanded to be used in keypads of mobile phones, lighting devices, backlights of liquid crystal displays, and automotive headlamps.

An object of the present invention is to include a light emitting module in which a converter is integrated.

Another problem to be solved by the present invention includes a light emitting system including the light emitting module.

Other problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

An aspect of the light emitting module of the present invention for achieving the above technical problem is a circuit board, a plurality of light emitting elements arranged on the circuit board, and installed on the circuit board, is applied to an alternating voltage to convert to a constant current or constant voltage And a converter for providing a constant current or a constant voltage to the plurality of light emitting devices.

One aspect of the light-emitting system of the present invention for achieving the above technical problem includes a first to k-th (but k is a natural number of two or more) light emitting modules sequentially arranged, the first light emitting module is applied with an AC voltage Emits light, bypasses an AC voltage, and transfers the same to the second light emitting module, and the t (where 2 ≦ t ≦ k−1 and t is a natural number) light emitting module applies the AC voltage transmitted from the t-1 light emitting module. It receives and emits light, and transfers the transferred AC voltage to the t + 1 light emitting module.

Other specific details of the invention are included in the detailed description and drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. In the drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the term "comprises" and / or "comprising" refers to the presence of one or more other components, steps, operations and / or elements. Or does not exclude additions. And “and / or” includes each and all combinations of one or more of the items mentioned. In addition, like reference numerals refer to like elements throughout the following specification.

Although the first, second, etc. are used to describe various elements, components and / or sections, these elements, components and / or sections are of course not limited by these terms. These terms are only used to distinguish one element, component or section from another element, component or section. Therefore, the first device, the first component, or the first section mentioned below may be a second device, a second component, or a second section within the technical spirit of the present invention.

When elements or layers are referred to as "on" or "on" of another element or layer, intervening other elements or layers as well as intervening another layer or element in between. It includes everything. On the other hand, when a device is referred to as "directly on" or "directly on" indicates that no device or layer is intervened in the middle.

The spatially relative terms " below ", " beneath ", " lower ", " above ", " upper " It may be used to easily describe the correlation of a device or components with other devices or components. Spatially relative terms are to be understood as terms that include different directions of the device in use or operation in addition to the directions shown in the figures. Like reference numerals refer to like elements throughout.

Embodiments described herein will be described with reference to plan and cross-sectional views, which are ideal schematic diagrams of the invention. Accordingly, shapes of the exemplary views may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include variations in forms generated by the manufacturing process. Accordingly, the regions illustrated in the figures have schematic attributes, and the shape of the regions illustrated in the figures is intended to illustrate a particular form of region of the device, and is not intended to limit the scope of the invention.

1A is a view for explaining a light emitting module according to a first embodiment of the present invention. 1B is a view for explaining a light emitting module according to a second embodiment of the present invention.

First, referring to FIG. 1A, in the light emitting module 1 according to the first embodiment of the present invention, the converter 20 and the light emitting unit 30 are integrated into one circuit board 10.

Specifically, the light emitting unit 30 may include a plurality of light emitting elements L11-L1n and Lm1-Lmn, and m * n (where m and n are natural numbers) of light emitting elements L11-in the drawing. L1n, Lm1-Lmn) is shown to be connected in series. Specifically, n light emitting elements L11-L1n and Lm1-Lmn are connected in series, and the n light emitting elements L11-L1n and Lm1-Lmn connected as described above are connected to each other in parallel. However, it is not limited thereto.

The converter 20 may be installed on the circuit board 10 and may be converted into a constant current by applying an AC voltage ACIN, and provide the converted constant current to the plurality of light emitting devices L11-L1n and Lm1-Lmn. have. Here, the AC voltage ACIN may be a voltage swinging from about 85V to about 265V, but is not limited thereto.

Referring to FIG. 1B, the converter 22 used in the light emitting module 2 according to the second embodiment of the present invention converts the AC voltage ACIN into a constant voltage and converts the converted constant voltage into a plurality of light emitting devices L11. -L1n, Lm1-Lmn). In this case, n light emitting elements connected in series (eg, L11-L1n) and the constant current component 12 may be connected in series. Here, the constant current component 12 may be a resistor, a constant current chip (IC), etc., but is not limited thereto. That is, the constant current component 12 is used to allow a constant current to flow through a plurality of light emitting elements (eg, L11-L1n) connected in series.

As the range of use of the light emitting elements L11-L1n and Lm1-Lmn is widened, recently, for example, the light emitting elements L11-L1n and Lm1-Lmn are also used for lighting of a picture frame or a billboard. It became. However, when the AC voltage (generally used) is applied from the outside and the light emitting devices L11-L1n and Lm1-Lmn need to provide a constant current or a constant voltage, a converter is required to convert the AC voltage into a constant current or a constant voltage. . However, unlike the first and second embodiments of the present invention, if the light emitting unit and the converter are separated separately, a separate place for installing the converter in a frame or a billboard is required. If you install a converter outside a frame or billboard, it's hard to move the frame or billboard and you don't want to see it. On the other hand, as in the first and second embodiments of the present invention, if the converter 20 and the light emitting unit 30 are integrated, the light emitting elements L11-L1n and Lm1-Lmn can be easily illuminated by lighting such as a picture frame or a billboard. ) Can be used. Moreover, since the alternating current voltage used normally can be used for power supplies, such as a picture frame and an advertisement board, it is convenient.

Here, for the convenience of description, the picture frame or the billboard is taken as an example, but the use range of the light emitting modules 1 and 2 according to the embodiments of the present invention is not limited thereto.

2 to 6 are diagrams for describing a light emitting module according to a third embodiment of the present invention. The light emitting module according to the third embodiment of the present invention implements the light emitting module according to the first embodiment of the present invention in more detail. Specifically, FIG. 2 is a diagram illustrating one surface of a circuit board, FIG. 3 is a diagram for describing a relationship between a first power line and a light emitting device illustrated in FIG. 2, and FIG. 4 is a diagram illustrating another surface of a circuit board. . FIG. 5 is a circuit diagram illustrating a plurality of light emitting elements formed on one surface of a circuit board, and FIG. 6 is a circuit diagram illustrating a converter formed on the other surface of a circuit board.

First, referring to FIGS. 2 and 4, a plurality of light emitting devices LEDs are arranged on the circuit board 10 spaced apart from each other. The converter 20 may be installed in an area between a plurality of spaced apart LEDs.

The plurality of light emitting devices LED may be arranged in the form of a first matrix. That is, the plurality of light emitting diodes LED are spaced apart from each other in the row direction x and the column direction y. A plurality of first power lines 40 formed in a second matrix form is disposed on one surface of the circuit board 10, and the plurality of light emitting devices LEDs are disposed on the plurality of first power lines 40. It is formed in. As illustrated, each of the light emitting devices LED is formed such that the first power lines 40 adjacent to each other in the row direction x of the second matrix form are electrically connected to each other. To this end, as shown in FIG. 3, the width W3 of each light emitting element LED is equal to the distance W2 between the first power supply wires 40 adjacent in the row direction x of the second matrix form. Wider than Here, the width W3 of each light emitting element LED means the length measured by the light emitting element LED in the row direction x.

In addition, the converter 20 is formed on the other surface of the circuit board 10. Specifically, as shown in FIG. 4, a plurality of elements (eg, diodes, inductors, resistors, etc.) may be provided in the region 20a. A detailed circuit will be described later with reference to FIG. 6. Pins of a plurality of elements formed on the other surface of the circuit board 10 may pass through the circuit board 10 and be fixed to the circuit board 10. Accordingly, the pins of the plurality of devices may protrude to one surface of the circuit board 10, which may be the region 20b shown in FIG. 2.

The region 20b may be a portion between adjacent rows x in the form of a first matrix in which a plurality of light emitting elements LEDs are arranged. That is, the portion in which the converter 20 is to be formed may be a portion in which the light emitting elements LEDs are uniformly aligned (for example, formed according to the first matrix) and remain on the circuit board 10. The reason for doing so is that if the circuit board 10 defines a portion of the circuit board 10 to form the converter 20 without considering the portion in which the light emitting elements LED are to be formed (or the converter 20 This is because the portion to be formed and the light emitting elements (LEDs) are formed far from the portion to be formed) and the portion where the converter 20 is formed are relatively dark.

The light emitting devices LED may be formed on one surface of the circuit board 10, and the converter 20 may be formed on the other surface of the circuit board 10. The reason for doing so is to prevent the converter 20 from blocking light generated by the light emitting elements LED, thereby preventing the portion where the converter 20 is formed from appearing relatively dark compared to the portion that is not. If it does not look relatively dark, converter 20 may be formed on one surface of circuit board 10 (eg, on region 20b).

In addition, referring to FIG. 3, the width of the plurality of first power supply wires 40 is relatively larger than that of the light emitting devices LED. For example, the width W1 of the first power wires 40 may include the first power wires adjacent to each other in the row direction x in the form of a second matrix in which the plurality of first power wires 40 are arranged. 40 may be wider than the interval W2. The reason for doing this is that the light emitting devices (LEDs) emit a lot of heat when the light emitting operation is performed, and the characteristics of the light emitting devices (LEDs) are deteriorated when heat is not properly discharged to the outside. Therefore, the width of the first power wires 40 is increased to extract heat generated from the light emitting devices LED through the first power wires 40. That is, the first power lines 40 also serve as a heat spreader.

In addition, the plurality of first power wires 40 may be disposed to be spaced apart from the region 20b. This is to prevent the plurality of first power supply wires 40 from being shorted with the region 20b.

4, an input terminal 60, a bypass power supply wiring 17, and an output terminal 70 are formed on the other surface of the circuit board 10.

The input terminal 60 receives an AC voltage ACIN, and the bypass power supply wire 17 transfers the AC voltage ACIN provided from the input terminal 60 to the output terminal 70 without passing through the converter 20. The output terminal 70 may output such an AC voltage ACIN to the outside. The input terminal 60, the bypass power supply wiring 17, and the output terminal 70 make it easy to connect a plurality of light emitting modules with each other. A detailed description will be described later with reference to FIGS. 9 through 11.

When the circuit board 10 has a polygonal shape (eg, a quadrangle) having a plurality of edges, the input terminal 60 is formed adjacent to one of the plurality of edges (eg, the left edge as shown in the figure). Can be. The output terminal 70 may be formed adjacent to another corner (for example, an upper corner as shown in the drawing) other than one corner of the plurality of corners. Here, the meaning that “the input terminal 60 is formed adjacent to one corner” means that the input terminal 60 is disposed closer to one corner than the output terminal 70. In addition, the "output terminal 70 is formed adjacent to the other edge" means that the output terminal 70 is disposed adjacent to the other edge than the input terminal 60.

5 and 6, an exemplary light emitting unit 30 and a converter 20 that can be employed in the light emitting module according to the third embodiment of the present invention will be described.

Referring to FIG. 5, the light emitting unit 30 may include a plurality of light emitting lines 30a-30f. Here, each light emitting line 30a may include a plurality of light emitting devices (for example, 48 = 24 * 2).

Referring to FIG. 6, the converter 20 includes a chip U1 that receives an AC voltage ACIN and converts it into a constant current. Bridge diodes D2, D3, D4, D5, smoothing circuits L1, C2, C4, other circuits D1, L2, C3, R7, R9, Q1, etc., process AC voltage ACIN to It serves to provide (U1).

7 and 8 are views for explaining a light emitting module according to a fourth embodiment of the present invention. 7 is a view for explaining the other surface of the circuit board used in the fourth embodiment of the present invention, Figure 8 is a view for explaining the relationship between the first power supply wiring and the second power supply wiring.

Referring to FIG. 7, similar to the plurality of first power lines 40, a plurality of second power lines 42 arranged in the third matrix form are formed on the other surface of the circuit board 10.

At least one of the plurality of first power wires 40 may be electrically connected to at least one of the plurality of second power wires 42. For example, as illustrated in FIG. 8, the first power line 40 formed on one surface of the circuit board 10 and the second power line 42 formed on the other surface may be connected to each other through vias 45. Can be.

The reason for doing this is to extract heat generated in the light emitting devices (LEDs) through the second power lines 42 as well as the first power lines 40. That is, the first power lines 40 and the second power lines 42 also serve as a heat spreader.

In addition, since the first power wires 40 and the second power wires 42 are connected to each other, the resistance value of the sum of the first power wires 40 and the second power wires 42 may be reduced. Can be.

9 to 11 are views for explaining a light emitting module according to a fifth embodiment of the present invention. 9 is a conceptual diagram illustrating a light emitting module according to a fifth embodiment of the present invention, and FIGS. 10 and 11 illustrate examples of a light emitting system that can be manufactured using the light emitting module shown in FIG. 9.

First, referring to FIG. 9, although one input terminal receives the AC voltage ACIN, a plurality of output terminals outputting the AC voltages ACOUT1, ACOUT2, and ACOUT3 may be provided (for example, three). As described above, the input terminal and the output terminal may be directly connected through the bypass power line. The three output stages may be disposed adjacent to corners different from the input stages. For example, the input terminal may be disposed adjacent to the left corner, and the three output terminals may be disposed adjacent to the upper corner, the right corner, and the lower corner.

In this way, a plurality of light emitting modules can be electrically connected in a desired manner. That is, the plurality of light emitting modules may be connected in an upward direction, may be connected in a right direction, or may be connected in a downward direction. That is, by using a plurality of light emitting modules having a single shape, it is possible to make a light emitting module of a desired shape. For example, as shown in FIG. 10, m * n light emitting modules (module 11-module m1, module 1n-module mn) may be connected in an m * n matrix form, and as shown in FIG. 11, m light emitting modules You can also connect (module 1-module m) in an m * 1 matrix.

In summary, it is possible to make a light emitting system including first to kth light emitting modules (where k is a natural number of two or more). Here, the first light emitting module emits light by receiving an AC voltage ACIN, bypasses the AC voltage, and transfers the second light emitting module to the second light emitting module, where t is 2 ≤ t ≤ k-1, and t is a natural number. The light emitting module receives the AC voltage transmitted from the t-1 light emitting module and emits light, and passes the transferred AC voltage to the t + 1 light emitting module.

Each of the first to k-th light emitting modules used herein has the same shape, for example, a circuit board, a plurality of light emitting elements arranged on the circuit board, installed on the circuit board, and applied with an alternating voltage to receive a constant current. Or a converter for converting to a constant voltage and providing a constant current or a constant voltage to a plurality of light emitting elements, an input terminal installed on a circuit board and receiving an alternating voltage, and an alternating voltage provided on the circuit board and provided from the input terminal. It may include a bypass power supply wiring and an output terminal provided on the circuit board, and outputs an AC voltage transferred through the bypass power supply wiring.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1A is a view for explaining a light emitting module according to a first embodiment of the present invention.

1B is a view for explaining a light emitting module according to a second embodiment of the present invention.

2 illustrates a surface of a circuit board used in a light emitting module according to a third embodiment of the present invention.

FIG. 3 is a diagram for describing a relationship between the first power line and the light emitting device illustrated in FIG. 2.

4 illustrates another surface of a circuit board used in the light emitting module according to the third embodiment of the present invention.

FIG. 5 is a circuit diagram illustrating a plurality of light emitting devices formed on one surface of a circuit board used in a light emitting module according to a third embodiment of the present invention.

6 is a circuit diagram illustrating a converter formed on the other surface of a circuit board used in the light emitting module according to the third embodiment of the present invention.

7 is a view for explaining the other surface of the circuit board used in the fourth embodiment of the present invention.

8 is a view for explaining the relationship between the first power supply wiring and the second power supply wiring used in the fourth embodiment of the present invention.

9 is a conceptual diagram illustrating a light emitting module according to a fifth embodiment of the present invention.

10 and 11 are examples of light emitting systems that can be manufactured using the light emitting module shown in FIG. 9.

(Explanation of symbols for the main parts of the drawing)

10: circuit board 20, 22: converter

30: light emitting part

Claims (13)

A circuit board; A plurality of light emitting elements arranged on one surface of the circuit board; A converter which is provided on the circuit board, receives an alternating current voltage, converts the same into a constant current or a constant voltage, and provides the constant current or the constant voltage to the plurality of light emitting devices; And Comprising a plurality of first power wires arranged on one surface of the circuit board, The plurality of light emitting devices are formed such that adjacent first power lines are electrically connected to each other. And a width of each of the first power wires is wider than an interval between adjacent first power wires. According to claim 1, The plurality of light emitting devices are arranged spaced apart from each other, The converter is a light emitting module installed in the area between the plurality of spaced apart light emitting elements. 3. The method of claim 2, The plurality of light emitting devices are arranged in the form of a first matrix, And the converter is installed in an area between adjacent rows of the first matrix form. The method of claim 3, The plurality of first power lines are arranged in a second matrix form on one surface of the circuit board. Wherein the plurality of light emitting devices are formed on the plurality of first power wires, wherein each of the light emitting devices is formed such that adjacent first power wires in the row direction of the second matrix form are electrically connected to each other. The method of claim 4, wherein And a width of each of the first power wires is wider than an interval between adjacent first power wires in the row direction of the second matrix form. The method of claim 4, wherein On the other surface of the circuit board, a plurality of second power lines arranged in a third matrix form are formed. At least one of the plurality of first power wires and at least one of the plurality of second power wires are electrically connected to each other. The method of claim 4, wherein The plurality of light emitting devices are formed on one surface of the circuit board, The converter is formed on the other surface of the circuit board. The method of claim 1, An input terminal provided on the circuit board and receiving the AC voltage; A bypass power supply line installed in the circuit board and configured to transfer an AC voltage provided from the input terminal; And an output terminal provided on the circuit board and outputting an AC voltage transmitted through the bypass power wiring. The method of claim 8, The circuit board is polygonal shape with a plurality of corners, The input terminal is formed adjacent to one corner of the plurality of corners, The output end of the light emitting module is formed adjacent to the other corner than the one of the plurality of corners. A first to kth (though k is a natural number of two or more) light emitting modules sequentially disposed, each light emitting module comprising a circuit board, a plurality of light emitting elements arranged on one surface of the circuit board, and the circuit A converter installed on a substrate and receiving an AC voltage and converting the same into a constant current or a constant voltage, and providing the constant current or constant voltage to the plurality of light emitting devices, and a plurality of first power wires arranged on one surface of the circuit board. Wherein, the plurality of light emitting elements are formed such that the adjacent first power line is electrically connected to each other, the width of each of the first power line is wider than the interval between the adjacent first power line, The first light emitting module emits light by receiving an AC voltage, bypasses the AC voltage, and transmits the same to the second light emitting module. The t th light emitting module among the first to k th light emitting modules emits light by receiving an AC voltage transmitted from the t-1 light emitting module, and emits light. The light emitting system bypasses the voltage and delivers the voltage to the t + 1th light emitting module. The method of claim 10, wherein each light emitting module An input terminal provided on the circuit board and receiving the AC voltage; A bypass power supply line installed in the circuit board and configured to transfer an AC voltage provided from the input terminal; And an output terminal disposed on the circuit board and outputting an AC voltage transmitted through the bypass power wiring. A circuit board; A plurality of light emitting elements arranged on one surface of the circuit board; A converter which is provided on the circuit board, receives an alternating current voltage, converts the same into a constant current or a constant voltage, and provides the constant current or the constant voltage to the plurality of light emitting devices; A plurality of first power wires arranged on one surface of the circuit board; And The other surface of the circuit board includes a plurality of second power wiring arranged, At least one of the plurality of first power wires and at least one of the plurality of second power wires are electrically connected to each other. A first to kth (though k is a natural number of two or more) light emitting modules sequentially disposed, each light emitting module comprising a circuit board, a plurality of light emitting elements arranged on one surface of the circuit board, and the circuit A converter installed on a substrate and receiving an alternating current voltage and converting the same into a constant current or a constant voltage, and providing the constant current or the constant voltage to the plurality of light emitting devices, a plurality of first power lines arranged on one surface of the circuit board, And a plurality of second power wires arranged on the other surface of the circuit board, at least one of the plurality of first power wires and at least one of the plurality of second power wires electrically connected to each other. The first light emitting module emits light by receiving an AC voltage, bypasses the AC voltage, and transmits the same to the second light emitting module. The t th light emitting module among the first to k th light emitting modules emits light by receiving an AC voltage transmitted from the t-1 light emitting module, and emits light. The light emitting system bypasses the voltage and delivers the voltage to the t + 1th light emitting module.

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